1// SPDX-License-Identifier: GPL-2.0
    2/*
    3 *    driver for Microchip PQI-based storage controllers
    4 *    Copyright (c) 2019-2023 Microchip Technology Inc. and its subsidiaries
    5 *    Copyright (c) 2016-2018 Microsemi Corporation
    6 *    Copyright (c) 2016 PMC-Sierra, Inc.
    7 *
    8 *    Questions/Comments/Bugfixes to storagedev@microchip.com
    9 *
   10 */
   11
   12#include <linux/module.h>
   13#include <linux/kernel.h>
   14#include <linux/pci.h>
   15#include <linux/delay.h>
   16#include <linux/interrupt.h>
   17#include <linux/sched.h>
   18#include <linux/rtc.h>
   19#include <linux/bcd.h>
   20#include <linux/reboot.h>
   21#include <linux/cciss_ioctl.h>
   22#include <linux/blk-mq-pci.h>
   23#include <scsi/scsi_host.h>
   24#include <scsi/scsi_cmnd.h>
   25#include <scsi/scsi_device.h>
   26#include <scsi/scsi_eh.h>
   27#include <scsi/scsi_transport_sas.h>
   28#include <asm/unaligned.h>
   29#include "smartpqi.h"
   30#include "smartpqi_sis.h"
   31
   32#if !defined(BUILD_TIMESTAMP)
   33#define BUILD_TIMESTAMP
   34#endif
   35
   36#define DRIVER_VERSION		"2.1.26-030"
   37#define DRIVER_MAJOR		2
   38#define DRIVER_MINOR		1
   39#define DRIVER_RELEASE		26
   40#define DRIVER_REVISION		30
   41
   42#define DRIVER_NAME		"Microchip SmartPQI Driver (v" \
   43				DRIVER_VERSION BUILD_TIMESTAMP ")"
   44#define DRIVER_NAME_SHORT	"smartpqi"
   45
   46#define PQI_EXTRA_SGL_MEMORY	(12 * sizeof(struct pqi_sg_descriptor))
   47
   48#define PQI_POST_RESET_DELAY_SECS			5
   49#define PQI_POST_OFA_RESET_DELAY_UPON_TIMEOUT_SECS	10
   50
   51#define PQI_NO_COMPLETION	((void *)-1)
   52
   53MODULE_AUTHOR("Microchip");
   54MODULE_DESCRIPTION("Driver for Microchip Smart Family Controller version "
   55	DRIVER_VERSION);
   56MODULE_VERSION(DRIVER_VERSION);
   57MODULE_LICENSE("GPL");
   58
   59struct pqi_cmd_priv {
   60	int this_residual;
   61};
   62
   63static struct pqi_cmd_priv *pqi_cmd_priv(struct scsi_cmnd *cmd)
   64{
   65	return scsi_cmd_priv(cmd);
   66}
   67
   68static void pqi_verify_structures(void);
   69static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info,
   70	enum pqi_ctrl_shutdown_reason ctrl_shutdown_reason);
   71static void pqi_ctrl_offline_worker(struct work_struct *work);
   72static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info);
   73static void pqi_scan_start(struct Scsi_Host *shost);
   74static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
   75	struct pqi_queue_group *queue_group, enum pqi_io_path path,
   76	struct pqi_io_request *io_request);
   77static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
   78	struct pqi_iu_header *request, unsigned int flags,
   79	struct pqi_raid_error_info *error_info);
   80static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
   81	struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
   82	unsigned int cdb_length, struct pqi_queue_group *queue_group,
   83	struct pqi_encryption_info *encryption_info, bool raid_bypass, bool io_high_prio);
   84static  int pqi_aio_submit_r1_write_io(struct pqi_ctrl_info *ctrl_info,
   85	struct scsi_cmnd *scmd, struct pqi_queue_group *queue_group,
   86	struct pqi_encryption_info *encryption_info, struct pqi_scsi_dev *device,
   87	struct pqi_scsi_dev_raid_map_data *rmd);
   88static int pqi_aio_submit_r56_write_io(struct pqi_ctrl_info *ctrl_info,
   89	struct scsi_cmnd *scmd, struct pqi_queue_group *queue_group,
   90	struct pqi_encryption_info *encryption_info, struct pqi_scsi_dev *device,
   91	struct pqi_scsi_dev_raid_map_data *rmd);
   92static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info);
   93static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info);
   94static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info, unsigned int delay_secs);
   95static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info);
   96static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info);
   97static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info);
   98static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
   99	struct pqi_scsi_dev *device, u8 lun, unsigned long timeout_msecs);
  100static void pqi_fail_all_outstanding_requests(struct pqi_ctrl_info *ctrl_info);
  101static void pqi_tmf_worker(struct work_struct *work);
  102
  103/* for flags argument to pqi_submit_raid_request_synchronous() */
  104#define PQI_SYNC_FLAGS_INTERRUPTABLE	0x1
  105
  106static struct scsi_transport_template *pqi_sas_transport_template;
  107
  108static atomic_t pqi_controller_count = ATOMIC_INIT(0);
  109
  110enum pqi_lockup_action {
  111	NONE,
  112	REBOOT,
  113	PANIC
  114};
  115
  116static enum pqi_lockup_action pqi_lockup_action = NONE;
  117
  118static struct {
  119	enum pqi_lockup_action	action;
  120	char			*name;
  121} pqi_lockup_actions[] = {
  122	{
  123		.action = NONE,
  124		.name = "none",
  125	},
  126	{
  127		.action = REBOOT,
  128		.name = "reboot",
  129	},
  130	{
  131		.action = PANIC,
  132		.name = "panic",
  133	},
  134};
  135
  136static unsigned int pqi_supported_event_types[] = {
  137	PQI_EVENT_TYPE_HOTPLUG,
  138	PQI_EVENT_TYPE_HARDWARE,
  139	PQI_EVENT_TYPE_PHYSICAL_DEVICE,
  140	PQI_EVENT_TYPE_LOGICAL_DEVICE,
  141	PQI_EVENT_TYPE_OFA,
  142	PQI_EVENT_TYPE_AIO_STATE_CHANGE,
  143	PQI_EVENT_TYPE_AIO_CONFIG_CHANGE,
  144};
  145
  146static int pqi_disable_device_id_wildcards;
  147module_param_named(disable_device_id_wildcards,
  148	pqi_disable_device_id_wildcards, int, 0644);
  149MODULE_PARM_DESC(disable_device_id_wildcards,
  150	"Disable device ID wildcards.");
  151
  152static int pqi_disable_heartbeat;
  153module_param_named(disable_heartbeat,
  154	pqi_disable_heartbeat, int, 0644);
  155MODULE_PARM_DESC(disable_heartbeat,
  156	"Disable heartbeat.");
  157
  158static int pqi_disable_ctrl_shutdown;
  159module_param_named(disable_ctrl_shutdown,
  160	pqi_disable_ctrl_shutdown, int, 0644);
  161MODULE_PARM_DESC(disable_ctrl_shutdown,
  162	"Disable controller shutdown when controller locked up.");
  163
  164static char *pqi_lockup_action_param;
  165module_param_named(lockup_action,
  166	pqi_lockup_action_param, charp, 0644);
  167MODULE_PARM_DESC(lockup_action, "Action to take when controller locked up.\n"
  168	"\t\tSupported: none, reboot, panic\n"
  169	"\t\tDefault: none");
  170
  171static int pqi_expose_ld_first;
  172module_param_named(expose_ld_first,
  173	pqi_expose_ld_first, int, 0644);
  174MODULE_PARM_DESC(expose_ld_first, "Expose logical drives before physical drives.");
  175
  176static int pqi_hide_vsep;
  177module_param_named(hide_vsep,
  178	pqi_hide_vsep, int, 0644);
  179MODULE_PARM_DESC(hide_vsep, "Hide the virtual SEP for direct attached drives.");
  180
  181static int pqi_disable_managed_interrupts;
  182module_param_named(disable_managed_interrupts,
  183	pqi_disable_managed_interrupts, int, 0644);
  184MODULE_PARM_DESC(disable_managed_interrupts,
  185	"Disable the kernel automatically assigning SMP affinity to IRQs.");
  186
  187static unsigned int pqi_ctrl_ready_timeout_secs;
  188module_param_named(ctrl_ready_timeout,
  189	pqi_ctrl_ready_timeout_secs, uint, 0644);
  190MODULE_PARM_DESC(ctrl_ready_timeout,
  191	"Timeout in seconds for driver to wait for controller ready.");
  192
  193static char *raid_levels[] = {
  194	"RAID-0",
  195	"RAID-4",
  196	"RAID-1(1+0)",
  197	"RAID-5",
  198	"RAID-5+1",
  199	"RAID-6",
  200	"RAID-1(Triple)",
  201};
  202
  203static char *pqi_raid_level_to_string(u8 raid_level)
  204{
  205	if (raid_level < ARRAY_SIZE(raid_levels))
  206		return raid_levels[raid_level];
  207
  208	return "RAID UNKNOWN";
  209}
  210
  211#define SA_RAID_0		0
  212#define SA_RAID_4		1
  213#define SA_RAID_1		2	/* also used for RAID 10 */
  214#define SA_RAID_5		3	/* also used for RAID 50 */
  215#define SA_RAID_51		4
  216#define SA_RAID_6		5	/* also used for RAID 60 */
  217#define SA_RAID_TRIPLE		6	/* also used for RAID 1+0 Triple */
  218#define SA_RAID_MAX		SA_RAID_TRIPLE
  219#define SA_RAID_UNKNOWN		0xff
  220
  221static inline void pqi_scsi_done(struct scsi_cmnd *scmd)
  222{
  223	pqi_prep_for_scsi_done(scmd);
  224	scsi_done(scmd);
  225}
  226
  227static inline void pqi_disable_write_same(struct scsi_device *sdev)
  228{
  229	sdev->no_write_same = 1;
  230}
  231
  232static inline bool pqi_scsi3addr_equal(u8 *scsi3addr1, u8 *scsi3addr2)
  233{
  234	return memcmp(scsi3addr1, scsi3addr2, 8) == 0;
  235}
  236
  237static inline bool pqi_is_logical_device(struct pqi_scsi_dev *device)
  238{
  239	return !device->is_physical_device;
  240}
  241
  242static inline bool pqi_is_external_raid_addr(u8 *scsi3addr)
  243{
  244	return scsi3addr[2] != 0;
  245}
  246
  247static inline bool pqi_ctrl_offline(struct pqi_ctrl_info *ctrl_info)
  248{
  249	return !ctrl_info->controller_online;
  250}
  251
  252static inline void pqi_check_ctrl_health(struct pqi_ctrl_info *ctrl_info)
  253{
  254	if (ctrl_info->controller_online)
  255		if (!sis_is_firmware_running(ctrl_info))
  256			pqi_take_ctrl_offline(ctrl_info, PQI_FIRMWARE_KERNEL_NOT_UP);
  257}
  258
  259static inline bool pqi_is_hba_lunid(u8 *scsi3addr)
  260{
  261	return pqi_scsi3addr_equal(scsi3addr, RAID_CTLR_LUNID);
  262}
  263
  264#define PQI_DRIVER_SCRATCH_PQI_MODE			0x1
  265#define PQI_DRIVER_SCRATCH_FW_TRIAGE_SUPPORTED		0x2
  266
  267static inline enum pqi_ctrl_mode pqi_get_ctrl_mode(struct pqi_ctrl_info *ctrl_info)
  268{
  269	return sis_read_driver_scratch(ctrl_info) & PQI_DRIVER_SCRATCH_PQI_MODE ? PQI_MODE : SIS_MODE;
  270}
  271
  272static inline void pqi_save_ctrl_mode(struct pqi_ctrl_info *ctrl_info,
  273	enum pqi_ctrl_mode mode)
  274{
  275	u32 driver_scratch;
  276
  277	driver_scratch = sis_read_driver_scratch(ctrl_info);
  278
  279	if (mode == PQI_MODE)
  280		driver_scratch |= PQI_DRIVER_SCRATCH_PQI_MODE;
  281	else
  282		driver_scratch &= ~PQI_DRIVER_SCRATCH_PQI_MODE;
  283
  284	sis_write_driver_scratch(ctrl_info, driver_scratch);
  285}
  286
  287static inline bool pqi_is_fw_triage_supported(struct pqi_ctrl_info *ctrl_info)
  288{
  289	return (sis_read_driver_scratch(ctrl_info) & PQI_DRIVER_SCRATCH_FW_TRIAGE_SUPPORTED) != 0;
  290}
  291
  292static inline void pqi_save_fw_triage_setting(struct pqi_ctrl_info *ctrl_info, bool is_supported)
  293{
  294	u32 driver_scratch;
  295
  296	driver_scratch = sis_read_driver_scratch(ctrl_info);
  297
  298	if (is_supported)
  299		driver_scratch |= PQI_DRIVER_SCRATCH_FW_TRIAGE_SUPPORTED;
  300	else
  301		driver_scratch &= ~PQI_DRIVER_SCRATCH_FW_TRIAGE_SUPPORTED;
  302
  303	sis_write_driver_scratch(ctrl_info, driver_scratch);
  304}
  305
  306static inline void pqi_ctrl_block_scan(struct pqi_ctrl_info *ctrl_info)
  307{
  308	ctrl_info->scan_blocked = true;
  309	mutex_lock(&ctrl_info->scan_mutex);
  310}
  311
  312static inline void pqi_ctrl_unblock_scan(struct pqi_ctrl_info *ctrl_info)
  313{
  314	ctrl_info->scan_blocked = false;
  315	mutex_unlock(&ctrl_info->scan_mutex);
  316}
  317
  318static inline bool pqi_ctrl_scan_blocked(struct pqi_ctrl_info *ctrl_info)
  319{
  320	return ctrl_info->scan_blocked;
  321}
  322
  323static inline void pqi_ctrl_block_device_reset(struct pqi_ctrl_info *ctrl_info)
  324{
  325	mutex_lock(&ctrl_info->lun_reset_mutex);
  326}
  327
  328static inline void pqi_ctrl_unblock_device_reset(struct pqi_ctrl_info *ctrl_info)
  329{
  330	mutex_unlock(&ctrl_info->lun_reset_mutex);
  331}
  332
  333static inline void pqi_scsi_block_requests(struct pqi_ctrl_info *ctrl_info)
  334{
  335	struct Scsi_Host *shost;
  336	unsigned int num_loops;
  337	int msecs_sleep;
  338
  339	shost = ctrl_info->scsi_host;
  340
  341	scsi_block_requests(shost);
  342
  343	num_loops = 0;
  344	msecs_sleep = 20;
  345	while (scsi_host_busy(shost)) {
  346		num_loops++;
  347		if (num_loops == 10)
  348			msecs_sleep = 500;
  349		msleep(msecs_sleep);
  350	}
  351}
  352
  353static inline void pqi_scsi_unblock_requests(struct pqi_ctrl_info *ctrl_info)
  354{
  355	scsi_unblock_requests(ctrl_info->scsi_host);
  356}
  357
  358static inline void pqi_ctrl_busy(struct pqi_ctrl_info *ctrl_info)
  359{
  360	atomic_inc(&ctrl_info->num_busy_threads);
  361}
  362
  363static inline void pqi_ctrl_unbusy(struct pqi_ctrl_info *ctrl_info)
  364{
  365	atomic_dec(&ctrl_info->num_busy_threads);
  366}
  367
  368static inline bool pqi_ctrl_blocked(struct pqi_ctrl_info *ctrl_info)
  369{
  370	return ctrl_info->block_requests;
  371}
  372
  373static inline void pqi_ctrl_block_requests(struct pqi_ctrl_info *ctrl_info)
  374{
  375	ctrl_info->block_requests = true;
  376}
  377
  378static inline void pqi_ctrl_unblock_requests(struct pqi_ctrl_info *ctrl_info)
  379{
  380	ctrl_info->block_requests = false;
  381	wake_up_all(&ctrl_info->block_requests_wait);
  382}
  383
  384static void pqi_wait_if_ctrl_blocked(struct pqi_ctrl_info *ctrl_info)
  385{
  386	if (!pqi_ctrl_blocked(ctrl_info))
  387		return;
  388
  389	atomic_inc(&ctrl_info->num_blocked_threads);
  390	wait_event(ctrl_info->block_requests_wait,
  391		!pqi_ctrl_blocked(ctrl_info));
  392	atomic_dec(&ctrl_info->num_blocked_threads);
  393}
  394
  395#define PQI_QUIESCE_WARNING_TIMEOUT_SECS		10
  396
  397static inline void pqi_ctrl_wait_until_quiesced(struct pqi_ctrl_info *ctrl_info)
  398{
  399	unsigned long start_jiffies;
  400	unsigned long warning_timeout;
  401	bool displayed_warning;
  402
  403	displayed_warning = false;
  404	start_jiffies = jiffies;
  405	warning_timeout = (PQI_QUIESCE_WARNING_TIMEOUT_SECS * HZ) + start_jiffies;
  406
  407	while (atomic_read(&ctrl_info->num_busy_threads) >
  408		atomic_read(&ctrl_info->num_blocked_threads)) {
  409		if (time_after(jiffies, warning_timeout)) {
  410			dev_warn(&ctrl_info->pci_dev->dev,
  411				"waiting %u seconds for driver activity to quiesce\n",
  412				jiffies_to_msecs(jiffies - start_jiffies) / 1000);
  413			displayed_warning = true;
  414			warning_timeout = (PQI_QUIESCE_WARNING_TIMEOUT_SECS * HZ) + jiffies;
  415		}
  416		usleep_range(1000, 2000);
  417	}
  418
  419	if (displayed_warning)
  420		dev_warn(&ctrl_info->pci_dev->dev,
  421			"driver activity quiesced after waiting for %u seconds\n",
  422			jiffies_to_msecs(jiffies - start_jiffies) / 1000);
  423}
  424
  425static inline bool pqi_device_offline(struct pqi_scsi_dev *device)
  426{
  427	return device->device_offline;
  428}
  429
  430static inline void pqi_ctrl_ofa_start(struct pqi_ctrl_info *ctrl_info)
  431{
  432	mutex_lock(&ctrl_info->ofa_mutex);
  433}
  434
  435static inline void pqi_ctrl_ofa_done(struct pqi_ctrl_info *ctrl_info)
  436{
  437	mutex_unlock(&ctrl_info->ofa_mutex);
  438}
  439
  440static inline void pqi_wait_until_ofa_finished(struct pqi_ctrl_info *ctrl_info)
  441{
  442	mutex_lock(&ctrl_info->ofa_mutex);
  443	mutex_unlock(&ctrl_info->ofa_mutex);
  444}
  445
  446static inline bool pqi_ofa_in_progress(struct pqi_ctrl_info *ctrl_info)
  447{
  448	return mutex_is_locked(&ctrl_info->ofa_mutex);
  449}
  450
  451static inline void pqi_device_remove_start(struct pqi_scsi_dev *device)
  452{
  453	device->in_remove = true;
  454}
  455
  456static inline bool pqi_device_in_remove(struct pqi_scsi_dev *device)
  457{
  458	return device->in_remove;
  459}
  460
  461static inline void pqi_device_reset_start(struct pqi_scsi_dev *device, u8 lun)
  462{
  463	device->in_reset[lun] = true;
  464}
  465
  466static inline void pqi_device_reset_done(struct pqi_scsi_dev *device, u8 lun)
  467{
  468	device->in_reset[lun] = false;
  469}
  470
  471static inline bool pqi_device_in_reset(struct pqi_scsi_dev *device, u8 lun)
  472{
  473	return device->in_reset[lun];
  474}
  475
  476static inline int pqi_event_type_to_event_index(unsigned int event_type)
  477{
  478	int index;
  479
  480	for (index = 0; index < ARRAY_SIZE(pqi_supported_event_types); index++)
  481		if (event_type == pqi_supported_event_types[index])
  482			return index;
  483
  484	return -1;
  485}
  486
  487static inline bool pqi_is_supported_event(unsigned int event_type)
  488{
  489	return pqi_event_type_to_event_index(event_type) != -1;
  490}
  491
  492static inline void pqi_schedule_rescan_worker_with_delay(struct pqi_ctrl_info *ctrl_info,
  493	unsigned long delay)
  494{
  495	if (pqi_ctrl_offline(ctrl_info))
  496		return;
  497
  498	schedule_delayed_work(&ctrl_info->rescan_work, delay);
  499}
  500
  501static inline void pqi_schedule_rescan_worker(struct pqi_ctrl_info *ctrl_info)
  502{
  503	pqi_schedule_rescan_worker_with_delay(ctrl_info, 0);
  504}
  505
  506#define PQI_RESCAN_WORK_DELAY	(10 * HZ)
  507
  508static inline void pqi_schedule_rescan_worker_delayed(struct pqi_ctrl_info *ctrl_info)
  509{
  510	pqi_schedule_rescan_worker_with_delay(ctrl_info, PQI_RESCAN_WORK_DELAY);
  511}
  512
  513static inline void pqi_cancel_rescan_worker(struct pqi_ctrl_info *ctrl_info)
  514{
  515	cancel_delayed_work_sync(&ctrl_info->rescan_work);
  516}
  517
  518static inline u32 pqi_read_heartbeat_counter(struct pqi_ctrl_info *ctrl_info)
  519{
  520	if (!ctrl_info->heartbeat_counter)
  521		return 0;
  522
  523	return readl(ctrl_info->heartbeat_counter);
  524}
  525
  526static inline u8 pqi_read_soft_reset_status(struct pqi_ctrl_info *ctrl_info)
  527{
  528	return readb(ctrl_info->soft_reset_status);
  529}
  530
  531static inline void pqi_clear_soft_reset_status(struct pqi_ctrl_info *ctrl_info)
  532{
  533	u8 status;
  534
  535	status = pqi_read_soft_reset_status(ctrl_info);
  536	status &= ~PQI_SOFT_RESET_ABORT;
  537	writeb(status, ctrl_info->soft_reset_status);
  538}
  539
  540static inline bool pqi_is_io_high_priority(struct pqi_scsi_dev *device, struct scsi_cmnd *scmd)
  541{
  542	bool io_high_prio;
  543	int priority_class;
  544
  545	io_high_prio = false;
  546
  547	if (device->ncq_prio_enable) {
  548		priority_class =
  549			IOPRIO_PRIO_CLASS(req_get_ioprio(scsi_cmd_to_rq(scmd)));
  550		if (priority_class == IOPRIO_CLASS_RT) {
  551			/* Set NCQ priority for read/write commands. */
  552			switch (scmd->cmnd[0]) {
  553			case WRITE_16:
  554			case READ_16:
  555			case WRITE_12:
  556			case READ_12:
  557			case WRITE_10:
  558			case READ_10:
  559			case WRITE_6:
  560			case READ_6:
  561				io_high_prio = true;
  562				break;
  563			}
  564		}
  565	}
  566
  567	return io_high_prio;
  568}
  569
  570static int pqi_map_single(struct pci_dev *pci_dev,
  571	struct pqi_sg_descriptor *sg_descriptor, void *buffer,
  572	size_t buffer_length, enum dma_data_direction data_direction)
  573{
  574	dma_addr_t bus_address;
  575
  576	if (!buffer || buffer_length == 0 || data_direction == DMA_NONE)
  577		return 0;
  578
  579	bus_address = dma_map_single(&pci_dev->dev, buffer, buffer_length,
  580		data_direction);
  581	if (dma_mapping_error(&pci_dev->dev, bus_address))
  582		return -ENOMEM;
  583
  584	put_unaligned_le64((u64)bus_address, &sg_descriptor->address);
  585	put_unaligned_le32(buffer_length, &sg_descriptor->length);
  586	put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
  587
  588	return 0;
  589}
  590
  591static void pqi_pci_unmap(struct pci_dev *pci_dev,
  592	struct pqi_sg_descriptor *descriptors, int num_descriptors,
  593	enum dma_data_direction data_direction)
  594{
  595	int i;
  596
  597	if (data_direction == DMA_NONE)
  598		return;
  599
  600	for (i = 0; i < num_descriptors; i++)
  601		dma_unmap_single(&pci_dev->dev,
  602			(dma_addr_t)get_unaligned_le64(&descriptors[i].address),
  603			get_unaligned_le32(&descriptors[i].length),
  604			data_direction);
  605}
  606
  607static int pqi_build_raid_path_request(struct pqi_ctrl_info *ctrl_info,
  608	struct pqi_raid_path_request *request, u8 cmd,
  609	u8 *scsi3addr, void *buffer, size_t buffer_length,
  610	u16 vpd_page, enum dma_data_direction *dir)
  611{
  612	u8 *cdb;
  613	size_t cdb_length = buffer_length;
  614
  615	memset(request, 0, sizeof(*request));
  616
  617	request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
  618	put_unaligned_le16(offsetof(struct pqi_raid_path_request,
  619		sg_descriptors[1]) - PQI_REQUEST_HEADER_LENGTH,
  620		&request->header.iu_length);
  621	put_unaligned_le32(buffer_length, &request->buffer_length);
  622	memcpy(request->lun_number, scsi3addr, sizeof(request->lun_number));
  623	request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
  624	request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
  625
  626	cdb = request->cdb;
  627
  628	switch (cmd) {
  629	case INQUIRY:
  630		request->data_direction = SOP_READ_FLAG;
  631		cdb[0] = INQUIRY;
  632		if (vpd_page & VPD_PAGE) {
  633			cdb[1] = 0x1;
  634			cdb[2] = (u8)vpd_page;
  635		}
  636		cdb[4] = (u8)cdb_length;
  637		break;
  638	case CISS_REPORT_LOG:
  639	case CISS_REPORT_PHYS:
  640		request->data_direction = SOP_READ_FLAG;
  641		cdb[0] = cmd;
  642		if (cmd == CISS_REPORT_PHYS) {
  643			if (ctrl_info->rpl_extended_format_4_5_supported)
  644				cdb[1] = CISS_REPORT_PHYS_FLAG_EXTENDED_FORMAT_4;
  645			else
  646				cdb[1] = CISS_REPORT_PHYS_FLAG_EXTENDED_FORMAT_2;
  647		} else {
  648			cdb[1] = ctrl_info->ciss_report_log_flags;
  649		}
  650		put_unaligned_be32(cdb_length, &cdb[6]);
  651		break;
  652	case CISS_GET_RAID_MAP:
  653		request->data_direction = SOP_READ_FLAG;
  654		cdb[0] = CISS_READ;
  655		cdb[1] = CISS_GET_RAID_MAP;
  656		put_unaligned_be32(cdb_length, &cdb[6]);
  657		break;
  658	case SA_FLUSH_CACHE:
  659		request->header.driver_flags = PQI_DRIVER_NONBLOCKABLE_REQUEST;
  660		request->data_direction = SOP_WRITE_FLAG;
  661		cdb[0] = BMIC_WRITE;
  662		cdb[6] = BMIC_FLUSH_CACHE;
  663		put_unaligned_be16(cdb_length, &cdb[7]);
  664		break;
  665	case BMIC_SENSE_DIAG_OPTIONS:
  666		cdb_length = 0;
  667		fallthrough;
  668	case BMIC_IDENTIFY_CONTROLLER:
  669	case BMIC_IDENTIFY_PHYSICAL_DEVICE:
  670	case BMIC_SENSE_SUBSYSTEM_INFORMATION:
  671	case BMIC_SENSE_FEATURE:
  672		request->data_direction = SOP_READ_FLAG;
  673		cdb[0] = BMIC_READ;
  674		cdb[6] = cmd;
  675		put_unaligned_be16(cdb_length, &cdb[7]);
  676		break;
  677	case BMIC_SET_DIAG_OPTIONS:
  678		cdb_length = 0;
  679		fallthrough;
  680	case BMIC_WRITE_HOST_WELLNESS:
  681		request->data_direction = SOP_WRITE_FLAG;
  682		cdb[0] = BMIC_WRITE;
  683		cdb[6] = cmd;
  684		put_unaligned_be16(cdb_length, &cdb[7]);
  685		break;
  686	case BMIC_CSMI_PASSTHRU:
  687		request->data_direction = SOP_BIDIRECTIONAL;
  688		cdb[0] = BMIC_WRITE;
  689		cdb[5] = CSMI_CC_SAS_SMP_PASSTHRU;
  690		cdb[6] = cmd;
  691		put_unaligned_be16(cdb_length, &cdb[7]);
  692		break;
  693	default:
  694		dev_err(&ctrl_info->pci_dev->dev, "unknown command 0x%c\n", cmd);
  695		break;
  696	}
  697
  698	switch (request->data_direction) {
  699	case SOP_READ_FLAG:
  700		*dir = DMA_FROM_DEVICE;
  701		break;
  702	case SOP_WRITE_FLAG:
  703		*dir = DMA_TO_DEVICE;
  704		break;
  705	case SOP_NO_DIRECTION_FLAG:
  706		*dir = DMA_NONE;
  707		break;
  708	default:
  709		*dir = DMA_BIDIRECTIONAL;
  710		break;
  711	}
  712
  713	return pqi_map_single(ctrl_info->pci_dev, &request->sg_descriptors[0],
  714		buffer, buffer_length, *dir);
  715}
  716
  717static inline void pqi_reinit_io_request(struct pqi_io_request *io_request)
  718{
  719	io_request->scmd = NULL;
  720	io_request->status = 0;
  721	io_request->error_info = NULL;
  722	io_request->raid_bypass = false;
  723}
  724
  725static inline struct pqi_io_request *pqi_alloc_io_request(struct pqi_ctrl_info *ctrl_info, struct scsi_cmnd *scmd)
  726{
  727	struct pqi_io_request *io_request;
  728	u16 i;
  729
  730	if (scmd) { /* SML I/O request */
  731		u32 blk_tag = blk_mq_unique_tag(scsi_cmd_to_rq(scmd));
  732
  733		i = blk_mq_unique_tag_to_tag(blk_tag);
  734		io_request = &ctrl_info->io_request_pool[i];
  735		if (atomic_inc_return(&io_request->refcount) > 1) {
  736			atomic_dec(&io_request->refcount);
  737			return NULL;
  738		}
  739	} else { /* IOCTL or driver internal request */
  740		/*
  741		 * benignly racy - may have to wait for an open slot.
  742		 * command slot range is scsi_ml_can_queue -
  743		 *         [scsi_ml_can_queue + (PQI_RESERVED_IO_SLOTS - 1)]
  744		 */
  745		i = 0;
  746		while (1) {
  747			io_request = &ctrl_info->io_request_pool[ctrl_info->scsi_ml_can_queue + i];
  748			if (atomic_inc_return(&io_request->refcount) == 1)
  749				break;
  750			atomic_dec(&io_request->refcount);
  751			i = (i + 1) % PQI_RESERVED_IO_SLOTS;
  752		}
  753	}
  754
  755	if (io_request)
  756		pqi_reinit_io_request(io_request);
  757
  758	return io_request;
  759}
  760
  761static void pqi_free_io_request(struct pqi_io_request *io_request)
  762{
  763	atomic_dec(&io_request->refcount);
  764}
  765
  766static int pqi_send_scsi_raid_request(struct pqi_ctrl_info *ctrl_info, u8 cmd,
  767	u8 *scsi3addr, void *buffer, size_t buffer_length, u16 vpd_page,
  768	struct pqi_raid_error_info *error_info)
  769{
  770	int rc;
  771	struct pqi_raid_path_request request;
  772	enum dma_data_direction dir;
  773
  774	rc = pqi_build_raid_path_request(ctrl_info, &request, cmd, scsi3addr,
  775		buffer, buffer_length, vpd_page, &dir);
  776	if (rc)
  777		return rc;
  778
  779	rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, error_info);
  780
  781	pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
  782
  783	return rc;
  784}
  785
  786/* helper functions for pqi_send_scsi_raid_request */
  787
  788static inline int pqi_send_ctrl_raid_request(struct pqi_ctrl_info *ctrl_info,
  789	u8 cmd, void *buffer, size_t buffer_length)
  790{
  791	return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID,
  792		buffer, buffer_length, 0, NULL);
  793}
  794
  795static inline int pqi_send_ctrl_raid_with_error(struct pqi_ctrl_info *ctrl_info,
  796	u8 cmd, void *buffer, size_t buffer_length,
  797	struct pqi_raid_error_info *error_info)
  798{
  799	return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID,
  800		buffer, buffer_length, 0, error_info);
  801}
  802
  803static inline int pqi_identify_controller(struct pqi_ctrl_info *ctrl_info,
  804	struct bmic_identify_controller *buffer)
  805{
  806	return pqi_send_ctrl_raid_request(ctrl_info, BMIC_IDENTIFY_CONTROLLER,
  807		buffer, sizeof(*buffer));
  808}
  809
  810static inline int pqi_sense_subsystem_info(struct  pqi_ctrl_info *ctrl_info,
  811	struct bmic_sense_subsystem_info *sense_info)
  812{
  813	return pqi_send_ctrl_raid_request(ctrl_info,
  814		BMIC_SENSE_SUBSYSTEM_INFORMATION, sense_info,
  815		sizeof(*sense_info));
  816}
  817
  818static inline int pqi_scsi_inquiry(struct pqi_ctrl_info *ctrl_info,
  819	u8 *scsi3addr, u16 vpd_page, void *buffer, size_t buffer_length)
  820{
  821	return pqi_send_scsi_raid_request(ctrl_info, INQUIRY, scsi3addr,
  822		buffer, buffer_length, vpd_page, NULL);
  823}
  824
  825static int pqi_identify_physical_device(struct pqi_ctrl_info *ctrl_info,
  826	struct pqi_scsi_dev *device,
  827	struct bmic_identify_physical_device *buffer, size_t buffer_length)
  828{
  829	int rc;
  830	enum dma_data_direction dir;
  831	u16 bmic_device_index;
  832	struct pqi_raid_path_request request;
  833
  834	rc = pqi_build_raid_path_request(ctrl_info, &request,
  835		BMIC_IDENTIFY_PHYSICAL_DEVICE, RAID_CTLR_LUNID, buffer,
  836		buffer_length, 0, &dir);
  837	if (rc)
  838		return rc;
  839
  840	bmic_device_index = CISS_GET_DRIVE_NUMBER(device->scsi3addr);
  841	request.cdb[2] = (u8)bmic_device_index;
  842	request.cdb[9] = (u8)(bmic_device_index >> 8);
  843
  844	rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, NULL);
  845
  846	pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
  847
  848	return rc;
  849}
  850
  851static inline u32 pqi_aio_limit_to_bytes(__le16 *limit)
  852{
  853	u32 bytes;
  854
  855	bytes = get_unaligned_le16(limit);
  856	if (bytes == 0)
  857		bytes = ~0;
  858	else
  859		bytes *= 1024;
  860
  861	return bytes;
  862}
  863
  864#pragma pack(1)
  865
  866struct bmic_sense_feature_buffer {
  867	struct bmic_sense_feature_buffer_header header;
  868	struct bmic_sense_feature_io_page_aio_subpage aio_subpage;
  869};
  870
  871#pragma pack()
  872
  873#define MINIMUM_AIO_SUBPAGE_BUFFER_LENGTH	\
  874	offsetofend(struct bmic_sense_feature_buffer, \
  875		aio_subpage.max_write_raid_1_10_3drive)
  876
  877#define MINIMUM_AIO_SUBPAGE_LENGTH	\
  878	(offsetofend(struct bmic_sense_feature_io_page_aio_subpage, \
  879		max_write_raid_1_10_3drive) - \
  880		sizeof_field(struct bmic_sense_feature_io_page_aio_subpage, header))
  881
  882static int pqi_get_advanced_raid_bypass_config(struct pqi_ctrl_info *ctrl_info)
  883{
  884	int rc;
  885	enum dma_data_direction dir;
  886	struct pqi_raid_path_request request;
  887	struct bmic_sense_feature_buffer *buffer;
  888
  889	buffer = kmalloc(sizeof(*buffer), GFP_KERNEL);
  890	if (!buffer)
  891		return -ENOMEM;
  892
  893	rc = pqi_build_raid_path_request(ctrl_info, &request, BMIC_SENSE_FEATURE, RAID_CTLR_LUNID,
  894		buffer, sizeof(*buffer), 0, &dir);
  895	if (rc)
  896		goto error;
  897
  898	request.cdb[2] = BMIC_SENSE_FEATURE_IO_PAGE;
  899	request.cdb[3] = BMIC_SENSE_FEATURE_IO_PAGE_AIO_SUBPAGE;
  900
  901	rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, NULL);
  902
  903	pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
  904
  905	if (rc)
  906		goto error;
  907
  908	if (buffer->header.page_code != BMIC_SENSE_FEATURE_IO_PAGE ||
  909		buffer->header.subpage_code !=
  910			BMIC_SENSE_FEATURE_IO_PAGE_AIO_SUBPAGE ||
  911		get_unaligned_le16(&buffer->header.buffer_length) <
  912			MINIMUM_AIO_SUBPAGE_BUFFER_LENGTH ||
  913		buffer->aio_subpage.header.page_code !=
  914			BMIC_SENSE_FEATURE_IO_PAGE ||
  915		buffer->aio_subpage.header.subpage_code !=
  916			BMIC_SENSE_FEATURE_IO_PAGE_AIO_SUBPAGE ||
  917		get_unaligned_le16(&buffer->aio_subpage.header.page_length) <
  918			MINIMUM_AIO_SUBPAGE_LENGTH) {
  919		goto error;
  920	}
  921
  922	ctrl_info->max_transfer_encrypted_sas_sata =
  923		pqi_aio_limit_to_bytes(
  924			&buffer->aio_subpage.max_transfer_encrypted_sas_sata);
  925
  926	ctrl_info->max_transfer_encrypted_nvme =
  927		pqi_aio_limit_to_bytes(
  928			&buffer->aio_subpage.max_transfer_encrypted_nvme);
  929
  930	ctrl_info->max_write_raid_5_6 =
  931		pqi_aio_limit_to_bytes(
  932			&buffer->aio_subpage.max_write_raid_5_6);
  933
  934	ctrl_info->max_write_raid_1_10_2drive =
  935		pqi_aio_limit_to_bytes(
  936			&buffer->aio_subpage.max_write_raid_1_10_2drive);
  937
  938	ctrl_info->max_write_raid_1_10_3drive =
  939		pqi_aio_limit_to_bytes(
  940			&buffer->aio_subpage.max_write_raid_1_10_3drive);
  941
  942error:
  943	kfree(buffer);
  944
  945	return rc;
  946}
  947
  948static int pqi_flush_cache(struct pqi_ctrl_info *ctrl_info,
  949	enum bmic_flush_cache_shutdown_event shutdown_event)
  950{
  951	int rc;
  952	struct bmic_flush_cache *flush_cache;
  953
  954	flush_cache = kzalloc(sizeof(*flush_cache), GFP_KERNEL);
  955	if (!flush_cache)
  956		return -ENOMEM;
  957
  958	flush_cache->shutdown_event = shutdown_event;
  959
  960	rc = pqi_send_ctrl_raid_request(ctrl_info, SA_FLUSH_CACHE, flush_cache,
  961		sizeof(*flush_cache));
  962
  963	kfree(flush_cache);
  964
  965	return rc;
  966}
  967
  968int pqi_csmi_smp_passthru(struct pqi_ctrl_info *ctrl_info,
  969	struct bmic_csmi_smp_passthru_buffer *buffer, size_t buffer_length,
  970	struct pqi_raid_error_info *error_info)
  971{
  972	return pqi_send_ctrl_raid_with_error(ctrl_info, BMIC_CSMI_PASSTHRU,
  973		buffer, buffer_length, error_info);
  974}
  975
  976#define PQI_FETCH_PTRAID_DATA		(1 << 31)
  977
  978static int pqi_set_diag_rescan(struct pqi_ctrl_info *ctrl_info)
  979{
  980	int rc;
  981	struct bmic_diag_options *diag;
  982
  983	diag = kzalloc(sizeof(*diag), GFP_KERNEL);
  984	if (!diag)
  985		return -ENOMEM;
  986
  987	rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SENSE_DIAG_OPTIONS,
  988		diag, sizeof(*diag));
  989	if (rc)
  990		goto out;
  991
  992	diag->options |= cpu_to_le32(PQI_FETCH_PTRAID_DATA);
  993
  994	rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SET_DIAG_OPTIONS, diag,
  995		sizeof(*diag));
  996
  997out:
  998	kfree(diag);
  999
 1000	return rc;
 1001}
 1002
 1003static inline int pqi_write_host_wellness(struct pqi_ctrl_info *ctrl_info,
 1004	void *buffer, size_t buffer_length)
 1005{
 1006	return pqi_send_ctrl_raid_request(ctrl_info, BMIC_WRITE_HOST_WELLNESS,
 1007		buffer, buffer_length);
 1008}
 1009
 1010#pragma pack(1)
 1011
 1012struct bmic_host_wellness_driver_version {
 1013	u8	start_tag[4];
 1014	u8	driver_version_tag[2];
 1015	__le16	driver_version_length;
 1016	char	driver_version[32];
 1017	u8	dont_write_tag[2];
 1018	u8	end_tag[2];
 1019};
 1020
 1021#pragma pack()
 1022
 1023static int pqi_write_driver_version_to_host_wellness(
 1024	struct pqi_ctrl_info *ctrl_info)
 1025{
 1026	int rc;
 1027	struct bmic_host_wellness_driver_version *buffer;
 1028	size_t buffer_length;
 1029
 1030	buffer_length = sizeof(*buffer);
 1031
 1032	buffer = kmalloc(buffer_length, GFP_KERNEL);
 1033	if (!buffer)
 1034		return -ENOMEM;
 1035
 1036	buffer->start_tag[0] = '<';
 1037	buffer->start_tag[1] = 'H';
 1038	buffer->start_tag[2] = 'W';
 1039	buffer->start_tag[3] = '>';
 1040	buffer->driver_version_tag[0] = 'D';
 1041	buffer->driver_version_tag[1] = 'V';
 1042	put_unaligned_le16(sizeof(buffer->driver_version),
 1043		&buffer->driver_version_length);
 1044	strncpy(buffer->driver_version, "Linux " DRIVER_VERSION,
 1045		sizeof(buffer->driver_version) - 1);
 1046	buffer->driver_version[sizeof(buffer->driver_version) - 1] = '\0';
 1047	buffer->dont_write_tag[0] = 'D';
 1048	buffer->dont_write_tag[1] = 'W';
 1049	buffer->end_tag[0] = 'Z';
 1050	buffer->end_tag[1] = 'Z';
 1051
 1052	rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
 1053
 1054	kfree(buffer);
 1055
 1056	return rc;
 1057}
 1058
 1059#pragma pack(1)
 1060
 1061struct bmic_host_wellness_time {
 1062	u8	start_tag[4];
 1063	u8	time_tag[2];
 1064	__le16	time_length;
 1065	u8	time[8];
 1066	u8	dont_write_tag[2];
 1067	u8	end_tag[2];
 1068};
 1069
 1070#pragma pack()
 1071
 1072static int pqi_write_current_time_to_host_wellness(
 1073	struct pqi_ctrl_info *ctrl_info)
 1074{
 1075	int rc;
 1076	struct bmic_host_wellness_time *buffer;
 1077	size_t buffer_length;
 1078	time64_t local_time;
 1079	unsigned int year;
 1080	struct tm tm;
 1081
 1082	buffer_length = sizeof(*buffer);
 1083
 1084	buffer = kmalloc(buffer_length, GFP_KERNEL);
 1085	if (!buffer)
 1086		return -ENOMEM;
 1087
 1088	buffer->start_tag[0] = '<';
 1089	buffer->start_tag[1] = 'H';
 1090	buffer->start_tag[2] = 'W';
 1091	buffer->start_tag[3] = '>';
 1092	buffer->time_tag[0] = 'T';
 1093	buffer->time_tag[1] = 'D';
 1094	put_unaligned_le16(sizeof(buffer->time),
 1095		&buffer->time_length);
 1096
 1097	local_time = ktime_get_real_seconds();
 1098	time64_to_tm(local_time, -sys_tz.tz_minuteswest * 60, &tm);
 1099	year = tm.tm_year + 1900;
 1100
 1101	buffer->time[0] = bin2bcd(tm.tm_hour);
 1102	buffer->time[1] = bin2bcd(tm.tm_min);
 1103	buffer->time[2] = bin2bcd(tm.tm_sec);
 1104	buffer->time[3] = 0;
 1105	buffer->time[4] = bin2bcd(tm.tm_mon + 1);
 1106	buffer->time[5] = bin2bcd(tm.tm_mday);
 1107	buffer->time[6] = bin2bcd(year / 100);
 1108	buffer->time[7] = bin2bcd(year % 100);
 1109
 1110	buffer->dont_write_tag[0] = 'D';
 1111	buffer->dont_write_tag[1] = 'W';
 1112	buffer->end_tag[0] = 'Z';
 1113	buffer->end_tag[1] = 'Z';
 1114
 1115	rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
 1116
 1117	kfree(buffer);
 1118
 1119	return rc;
 1120}
 1121
 1122#define PQI_UPDATE_TIME_WORK_INTERVAL	(24UL * 60 * 60 * HZ)
 1123
 1124static void pqi_update_time_worker(struct work_struct *work)
 1125{
 1126	int rc;
 1127	struct pqi_ctrl_info *ctrl_info;
 1128
 1129	ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
 1130		update_time_work);
 1131
 1132	rc = pqi_write_current_time_to_host_wellness(ctrl_info);
 1133	if (rc)
 1134		dev_warn(&ctrl_info->pci_dev->dev,
 1135			"error updating time on controller\n");
 1136
 1137	schedule_delayed_work(&ctrl_info->update_time_work,
 1138		PQI_UPDATE_TIME_WORK_INTERVAL);
 1139}
 1140
 1141static inline void pqi_schedule_update_time_worker(struct pqi_ctrl_info *ctrl_info)
 1142{
 1143	schedule_delayed_work(&ctrl_info->update_time_work, 0);
 1144}
 1145
 1146static inline void pqi_cancel_update_time_worker(struct pqi_ctrl_info *ctrl_info)
 1147{
 1148	cancel_delayed_work_sync(&ctrl_info->update_time_work);
 1149}
 1150
 1151static inline int pqi_report_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd, void *buffer,
 1152	size_t buffer_length)
 1153{
 1154	return pqi_send_ctrl_raid_request(ctrl_info, cmd, buffer, buffer_length);
 1155}
 1156
 1157static int pqi_report_phys_logical_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd, void **buffer)
 1158{
 1159	int rc;
 1160	size_t lun_list_length;
 1161	size_t lun_data_length;
 1162	size_t new_lun_list_length;
 1163	void *lun_data = NULL;
 1164	struct report_lun_header *report_lun_header;
 1165
 1166	report_lun_header = kmalloc(sizeof(*report_lun_header), GFP_KERNEL);
 1167	if (!report_lun_header) {
 1168		rc = -ENOMEM;
 1169		goto out;
 1170	}
 1171
 1172	rc = pqi_report_luns(ctrl_info, cmd, report_lun_header, sizeof(*report_lun_header));
 1173	if (rc)
 1174		goto out;
 1175
 1176	lun_list_length = get_unaligned_be32(&report_lun_header->list_length);
 1177
 1178again:
 1179	lun_data_length = sizeof(struct report_lun_header) + lun_list_length;
 1180
 1181	lun_data = kmalloc(lun_data_length, GFP_KERNEL);
 1182	if (!lun_data) {
 1183		rc = -ENOMEM;
 1184		goto out;
 1185	}
 1186
 1187	if (lun_list_length == 0) {
 1188		memcpy(lun_data, report_lun_header, sizeof(*report_lun_header));
 1189		goto out;
 1190	}
 1191
 1192	rc = pqi_report_luns(ctrl_info, cmd, lun_data, lun_data_length);
 1193	if (rc)
 1194		goto out;
 1195
 1196	new_lun_list_length =
 1197		get_unaligned_be32(&((struct report_lun_header *)lun_data)->list_length);
 1198
 1199	if (new_lun_list_length > lun_list_length) {
 1200		lun_list_length = new_lun_list_length;
 1201		kfree(lun_data);
 1202		goto again;
 1203	}
 1204
 1205out:
 1206	kfree(report_lun_header);
 1207
 1208	if (rc) {
 1209		kfree(lun_data);
 1210		lun_data = NULL;
 1211	}
 1212
 1213	*buffer = lun_data;
 1214
 1215	return rc;
 1216}
 1217
 1218static inline int pqi_report_phys_luns(struct pqi_ctrl_info *ctrl_info, void **buffer)
 1219{
 1220	int rc;
 1221	unsigned int i;
 1222	u8 rpl_response_format;
 1223	u32 num_physicals;
 1224	void *rpl_list;
 1225	struct report_lun_header *rpl_header;
 1226	struct report_phys_lun_8byte_wwid_list *rpl_8byte_wwid_list;
 1227	struct report_phys_lun_16byte_wwid_list *rpl_16byte_wwid_list;
 1228
 1229	rc = pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_PHYS, &rpl_list);
 1230	if (rc)
 1231		return rc;
 1232
 1233	if (ctrl_info->rpl_extended_format_4_5_supported) {
 1234		rpl_header = rpl_list;
 1235		rpl_response_format = rpl_header->flags & CISS_REPORT_PHYS_FLAG_EXTENDED_FORMAT_MASK;
 1236		if (rpl_response_format == CISS_REPORT_PHYS_FLAG_EXTENDED_FORMAT_4) {
 1237			*buffer = rpl_list;
 1238			return 0;
 1239		} else if (rpl_response_format != CISS_REPORT_PHYS_FLAG_EXTENDED_FORMAT_2) {
 1240			dev_err(&ctrl_info->pci_dev->dev,
 1241				"RPL returned unsupported data format %u\n",
 1242				rpl_response_format);
 1243			return -EINVAL;
 1244		} else {
 1245			dev_warn(&ctrl_info->pci_dev->dev,
 1246				"RPL returned extended format 2 instead of 4\n");
 1247		}
 1248	}
 1249
 1250	rpl_8byte_wwid_list = rpl_list;
 1251	num_physicals = get_unaligned_be32(&rpl_8byte_wwid_list->header.list_length) / sizeof(rpl_8byte_wwid_list->lun_entries[0]);
 1252
 1253	rpl_16byte_wwid_list = kmalloc(struct_size(rpl_16byte_wwid_list, lun_entries,
 1254						   num_physicals), GFP_KERNEL);
 1255	if (!rpl_16byte_wwid_list)
 1256		return -ENOMEM;
 1257
 1258	put_unaligned_be32(num_physicals * sizeof(struct report_phys_lun_16byte_wwid),
 1259		&rpl_16byte_wwid_list->header.list_length);
 1260	rpl_16byte_wwid_list->header.flags = rpl_8byte_wwid_list->header.flags;
 1261
 1262	for (i = 0; i < num_physicals; i++) {
 1263		memcpy(&rpl_16byte_wwid_list->lun_entries[i].lunid, &rpl_8byte_wwid_list->lun_entries[i].lunid, sizeof(rpl_8byte_wwid_list->lun_entries[i].lunid));
 1264		memcpy(&rpl_16byte_wwid_list->lun_entries[i].wwid[0], &rpl_8byte_wwid_list->lun_entries[i].wwid, sizeof(rpl_8byte_wwid_list->lun_entries[i].wwid));
 1265		memset(&rpl_16byte_wwid_list->lun_entries[i].wwid[8], 0, 8);
 1266		rpl_16byte_wwid_list->lun_entries[i].device_type = rpl_8byte_wwid_list->lun_entries[i].device_type;
 1267		rpl_16byte_wwid_list->lun_entries[i].device_flags = rpl_8byte_wwid_list->lun_entries[i].device_flags;
 1268		rpl_16byte_wwid_list->lun_entries[i].lun_count = rpl_8byte_wwid_list->lun_entries[i].lun_count;
 1269		rpl_16byte_wwid_list->lun_entries[i].redundant_paths = rpl_8byte_wwid_list->lun_entries[i].redundant_paths;
 1270		rpl_16byte_wwid_list->lun_entries[i].aio_handle = rpl_8byte_wwid_list->lun_entries[i].aio_handle;
 1271	}
 1272
 1273	kfree(rpl_8byte_wwid_list);
 1274	*buffer = rpl_16byte_wwid_list;
 1275
 1276	return 0;
 1277}
 1278
 1279static inline int pqi_report_logical_luns(struct pqi_ctrl_info *ctrl_info, void **buffer)
 1280{
 1281	return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_LOG, buffer);
 1282}
 1283
 1284static int pqi_get_device_lists(struct pqi_ctrl_info *ctrl_info,
 1285	struct report_phys_lun_16byte_wwid_list **physdev_list,
 1286	struct report_log_lun_list **logdev_list)
 1287{
 1288	int rc;
 1289	size_t logdev_list_length;
 1290	size_t logdev_data_length;
 1291	struct report_log_lun_list *internal_logdev_list;
 1292	struct report_log_lun_list *logdev_data;
 1293	struct report_lun_header report_lun_header;
 1294
 1295	rc = pqi_report_phys_luns(ctrl_info, (void **)physdev_list);
 1296	if (rc)
 1297		dev_err(&ctrl_info->pci_dev->dev,
 1298			"report physical LUNs failed\n");
 1299
 1300	rc = pqi_report_logical_luns(ctrl_info, (void **)logdev_list);
 1301	if (rc)
 1302		dev_err(&ctrl_info->pci_dev->dev,
 1303			"report logical LUNs failed\n");
 1304
 1305	/*
 1306	 * Tack the controller itself onto the end of the logical device list
 1307	 * by adding a list entry that is all zeros.
 1308	 */
 1309
 1310	logdev_data = *logdev_list;
 1311
 1312	if (logdev_data) {
 1313		logdev_list_length =
 1314			get_unaligned_be32(&logdev_data->header.list_length);
 1315	} else {
 1316		memset(&report_lun_header, 0, sizeof(report_lun_header));
 1317		logdev_data =
 1318			(struct report_log_lun_list *)&report_lun_header;
 1319		logdev_list_length = 0;
 1320	}
 1321
 1322	logdev_data_length = sizeof(struct report_lun_header) +
 1323		logdev_list_length;
 1324
 1325	internal_logdev_list = kmalloc(logdev_data_length +
 1326		sizeof(struct report_log_lun), GFP_KERNEL);
 1327	if (!internal_logdev_list) {
 1328		kfree(*logdev_list);
 1329		*logdev_list = NULL;
 1330		return -ENOMEM;
 1331	}
 1332
 1333	memcpy(internal_logdev_list, logdev_data, logdev_data_length);
 1334	memset((u8 *)internal_logdev_list + logdev_data_length, 0,
 1335		sizeof(struct report_log_lun));
 1336	put_unaligned_be32(logdev_list_length +
 1337		sizeof(struct report_log_lun),
 1338		&internal_logdev_list->header.list_length);
 1339
 1340	kfree(*logdev_list);
 1341	*logdev_list = internal_logdev_list;
 1342
 1343	return 0;
 1344}
 1345
 1346static inline void pqi_set_bus_target_lun(struct pqi_scsi_dev *device,
 1347	int bus, int target, int lun)
 1348{
 1349	device->bus = bus;
 1350	device->target = target;
 1351	device->lun = lun;
 1352}
 1353
 1354static void pqi_assign_bus_target_lun(struct pqi_scsi_dev *device)
 1355{
 1356	u8 *scsi3addr;
 1357	u32 lunid;
 1358	int bus;
 1359	int target;
 1360	int lun;
 1361
 1362	scsi3addr = device->scsi3addr;
 1363	lunid = get_unaligned_le32(scsi3addr);
 1364
 1365	if (pqi_is_hba_lunid(scsi3addr)) {
 1366		/* The specified device is the controller. */
 1367		pqi_set_bus_target_lun(device, PQI_HBA_BUS, 0, lunid & 0x3fff);
 1368		device->target_lun_valid = true;
 1369		return;
 1370	}
 1371
 1372	if (pqi_is_logical_device(device)) {
 1373		if (device->is_external_raid_device) {
 1374			bus = PQI_EXTERNAL_RAID_VOLUME_BUS;
 1375			target = (lunid >> 16) & 0x3fff;
 1376			lun = lunid & 0xff;
 1377		} else {
 1378			bus = PQI_RAID_VOLUME_BUS;
 1379			target = 0;
 1380			lun = lunid & 0x3fff;
 1381		}
 1382		pqi_set_bus_target_lun(device, bus, target, lun);
 1383		device->target_lun_valid = true;
 1384		return;
 1385	}
 1386
 1387	/*
 1388	 * Defer target and LUN assignment for non-controller physical devices
 1389	 * because the SAS transport layer will make these assignments later.
 1390	 */
 1391	pqi_set_bus_target_lun(device, PQI_PHYSICAL_DEVICE_BUS, 0, 0);
 1392}
 1393
 1394static void pqi_get_raid_level(struct pqi_ctrl_info *ctrl_info,
 1395	struct pqi_scsi_dev *device)
 1396{
 1397	int rc;
 1398	u8 raid_level;
 1399	u8 *buffer;
 1400
 1401	raid_level = SA_RAID_UNKNOWN;
 1402
 1403	buffer = kmalloc(64, GFP_KERNEL);
 1404	if (buffer) {
 1405		rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
 1406			VPD_PAGE | CISS_VPD_LV_DEVICE_GEOMETRY, buffer, 64);
 1407		if (rc == 0) {
 1408			raid_level = buffer[8];
 1409			if (raid_level > SA_RAID_MAX)
 1410				raid_level = SA_RAID_UNKNOWN;
 1411		}
 1412		kfree(buffer);
 1413	}
 1414
 1415	device->raid_level = raid_level;
 1416}
 1417
 1418static int pqi_validate_raid_map(struct pqi_ctrl_info *ctrl_info,
 1419	struct pqi_scsi_dev *device, struct raid_map *raid_map)
 1420{
 1421	char *err_msg;
 1422	u32 raid_map_size;
 1423	u32 r5or6_blocks_per_row;
 1424
 1425	raid_map_size = get_unaligned_le32(&raid_map->structure_size);
 1426
 1427	if (raid_map_size < offsetof(struct raid_map, disk_data)) {
 1428		err_msg = "RAID map too small";
 1429		goto bad_raid_map;
 1430	}
 1431
 1432	if (device->raid_level == SA_RAID_1) {
 1433		if (get_unaligned_le16(&raid_map->layout_map_count) != 2) {
 1434			err_msg = "invalid RAID-1 map";
 1435			goto bad_raid_map;
 1436		}
 1437	} else if (device->raid_level == SA_RAID_TRIPLE) {
 1438		if (get_unaligned_le16(&raid_map->layout_map_count) != 3) {
 1439			err_msg = "invalid RAID-1(Triple) map";
 1440			goto bad_raid_map;
 1441		}
 1442	} else if ((device->raid_level == SA_RAID_5 ||
 1443		device->raid_level == SA_RAID_6) &&
 1444		get_unaligned_le16(&raid_map->layout_map_count) > 1) {
 1445		/* RAID 50/60 */
 1446		r5or6_blocks_per_row =
 1447			get_unaligned_le16(&raid_map->strip_size) *
 1448			get_unaligned_le16(&raid_map->data_disks_per_row);
 1449		if (r5or6_blocks_per_row == 0) {
 1450			err_msg = "invalid RAID-5 or RAID-6 map";
 1451			goto bad_raid_map;
 1452		}
 1453	}
 1454
 1455	return 0;
 1456
 1457bad_raid_map:
 1458	dev_warn(&ctrl_info->pci_dev->dev,
 1459		"logical device %08x%08x %s\n",
 1460		*((u32 *)&device->scsi3addr),
 1461		*((u32 *)&device->scsi3addr[4]), err_msg);
 1462
 1463	return -EINVAL;
 1464}
 1465
 1466static int pqi_get_raid_map(struct pqi_ctrl_info *ctrl_info,
 1467	struct pqi_scsi_dev *device)
 1468{
 1469	int rc;
 1470	u32 raid_map_size;
 1471	struct raid_map *raid_map;
 1472
 1473	raid_map = kmalloc(sizeof(*raid_map), GFP_KERNEL);
 1474	if (!raid_map)
 1475		return -ENOMEM;
 1476
 1477	rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP,
 1478		device->scsi3addr, raid_map, sizeof(*raid_map), 0, NULL);
 1479	if (rc)
 1480		goto error;
 1481
 1482	raid_map_size = get_unaligned_le32(&raid_map->structure_size);
 1483
 1484	if (raid_map_size > sizeof(*raid_map)) {
 1485
 1486		kfree(raid_map);
 1487
 1488		raid_map = kmalloc(raid_map_size, GFP_KERNEL);
 1489		if (!raid_map)
 1490			return -ENOMEM;
 1491
 1492		rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP,
 1493			device->scsi3addr, raid_map, raid_map_size, 0, NULL);
 1494		if (rc)
 1495			goto error;
 1496
 1497		if (get_unaligned_le32(&raid_map->structure_size)
 1498			!= raid_map_size) {
 1499			dev_warn(&ctrl_info->pci_dev->dev,
 1500				"requested %u bytes, received %u bytes\n",
 1501				raid_map_size,
 1502				get_unaligned_le32(&raid_map->structure_size));
 1503			rc = -EINVAL;
 1504			goto error;
 1505		}
 1506	}
 1507
 1508	rc = pqi_validate_raid_map(ctrl_info, device, raid_map);
 1509	if (rc)
 1510		goto error;
 1511
 1512	device->raid_map = raid_map;
 1513
 1514	return 0;
 1515
 1516error:
 1517	kfree(raid_map);
 1518
 1519	return rc;
 1520}
 1521
 1522static void pqi_set_max_transfer_encrypted(struct pqi_ctrl_info *ctrl_info,
 1523	struct pqi_scsi_dev *device)
 1524{
 1525	if (!ctrl_info->lv_drive_type_mix_valid) {
 1526		device->max_transfer_encrypted = ~0;
 1527		return;
 1528	}
 1529
 1530	switch (LV_GET_DRIVE_TYPE_MIX(device->scsi3addr)) {
 1531	case LV_DRIVE_TYPE_MIX_SAS_HDD_ONLY:
 1532	case LV_DRIVE_TYPE_MIX_SATA_HDD_ONLY:
 1533	case LV_DRIVE_TYPE_MIX_SAS_OR_SATA_SSD_ONLY:
 1534	case LV_DRIVE_TYPE_MIX_SAS_SSD_ONLY:
 1535	case LV_DRIVE_TYPE_MIX_SATA_SSD_ONLY:
 1536	case LV_DRIVE_TYPE_MIX_SAS_ONLY:
 1537	case LV_DRIVE_TYPE_MIX_SATA_ONLY:
 1538		device->max_transfer_encrypted =
 1539			ctrl_info->max_transfer_encrypted_sas_sata;
 1540		break;
 1541	case LV_DRIVE_TYPE_MIX_NVME_ONLY:
 1542		device->max_transfer_encrypted =
 1543			ctrl_info->max_transfer_encrypted_nvme;
 1544		break;
 1545	case LV_DRIVE_TYPE_MIX_UNKNOWN:
 1546	case LV_DRIVE_TYPE_MIX_NO_RESTRICTION:
 1547	default:
 1548		device->max_transfer_encrypted =
 1549			min(ctrl_info->max_transfer_encrypted_sas_sata,
 1550				ctrl_info->max_transfer_encrypted_nvme);
 1551		break;
 1552	}
 1553}
 1554
 1555static void pqi_get_raid_bypass_status(struct pqi_ctrl_info *ctrl_info,
 1556	struct pqi_scsi_dev *device)
 1557{
 1558	int rc;
 1559	u8 *buffer;
 1560	u8 bypass_status;
 1561
 1562	buffer = kmalloc(64, GFP_KERNEL);
 1563	if (!buffer)
 1564		return;
 1565
 1566	rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
 1567		VPD_PAGE | CISS_VPD_LV_BYPASS_STATUS, buffer, 64);
 1568	if (rc)
 1569		goto out;
 1570
 1571#define RAID_BYPASS_STATUS		4
 1572#define RAID_BYPASS_CONFIGURED		0x1
 1573#define RAID_BYPASS_ENABLED		0x2
 1574
 1575	bypass_status = buffer[RAID_BYPASS_STATUS];
 1576	device->raid_bypass_configured =
 1577		(bypass_status & RAID_BYPASS_CONFIGURED) != 0;
 1578	if (device->raid_bypass_configured &&
 1579		(bypass_status & RAID_BYPASS_ENABLED) &&
 1580		pqi_get_raid_map(ctrl_info, device) == 0) {
 1581		device->raid_bypass_enabled = true;
 1582		if (get_unaligned_le16(&device->raid_map->flags) &
 1583			RAID_MAP_ENCRYPTION_ENABLED)
 1584			pqi_set_max_transfer_encrypted(ctrl_info, device);
 1585	}
 1586
 1587out:
 1588	kfree(buffer);
 1589}
 1590
 1591/*
 1592 * Use vendor-specific VPD to determine online/offline status of a volume.
 1593 */
 1594
 1595static void pqi_get_volume_status(struct pqi_ctrl_info *ctrl_info,
 1596	struct pqi_scsi_dev *device)
 1597{
 1598	int rc;
 1599	size_t page_length;
 1600	u8 volume_status = CISS_LV_STATUS_UNAVAILABLE;
 1601	bool volume_offline = true;
 1602	u32 volume_flags;
 1603	struct ciss_vpd_logical_volume_status *vpd;
 1604
 1605	vpd = kmalloc(sizeof(*vpd), GFP_KERNEL);
 1606	if (!vpd)
 1607		goto no_buffer;
 1608
 1609	rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
 1610		VPD_PAGE | CISS_VPD_LV_STATUS, vpd, sizeof(*vpd));
 1611	if (rc)
 1612		goto out;
 1613
 1614	if (vpd->page_code != CISS_VPD_LV_STATUS)
 1615		goto out;
 1616
 1617	page_length = offsetof(struct ciss_vpd_logical_volume_status,
 1618		volume_status) + vpd->page_length;
 1619	if (page_length < sizeof(*vpd))
 1620		goto out;
 1621
 1622	volume_status = vpd->volume_status;
 1623	volume_flags = get_unaligned_be32(&vpd->flags);
 1624	volume_offline = (volume_flags & CISS_LV_FLAGS_NO_HOST_IO) != 0;
 1625
 1626out:
 1627	kfree(vpd);
 1628no_buffer:
 1629	device->volume_status = volume_status;
 1630	device->volume_offline = volume_offline;
 1631}
 1632
 1633#define PQI_DEVICE_NCQ_PRIO_SUPPORTED	0x01
 1634#define PQI_DEVICE_PHY_MAP_SUPPORTED	0x10
 1635#define PQI_DEVICE_ERASE_IN_PROGRESS	0x10
 1636
 1637static int pqi_get_physical_device_info(struct pqi_ctrl_info *ctrl_info,
 1638	struct pqi_scsi_dev *device,
 1639	struct bmic_identify_physical_device *id_phys)
 1640{
 1641	int rc;
 1642
 1643	memset(id_phys, 0, sizeof(*id_phys));
 1644
 1645	rc = pqi_identify_physical_device(ctrl_info, device,
 1646		id_phys, sizeof(*id_phys));
 1647	if (rc) {
 1648		device->queue_depth = PQI_PHYSICAL_DISK_DEFAULT_MAX_QUEUE_DEPTH;
 1649		return rc;
 1650	}
 1651
 1652	scsi_sanitize_inquiry_string(&id_phys->model[0], 8);
 1653	scsi_sanitize_inquiry_string(&id_phys->model[8], 16);
 1654
 1655	memcpy(device->vendor, &id_phys->model[0], sizeof(device->vendor));
 1656	memcpy(device->model, &id_phys->model[8], sizeof(device->model));
 1657
 1658	device->box_index = id_phys->box_index;
 1659	device->phys_box_on_bus = id_phys->phys_box_on_bus;
 1660	device->phy_connected_dev_type = id_phys->phy_connected_dev_type[0];
 1661	device->queue_depth =
 1662		get_unaligned_le16(&id_phys->current_queue_depth_limit);
 1663	device->active_path_index = id_phys->active_path_number;
 1664	device->path_map = id_phys->redundant_path_present_map;
 1665	memcpy(&device->box,
 1666		&id_phys->alternate_paths_phys_box_on_port,
 1667		sizeof(device->box));
 1668	memcpy(&device->phys_connector,
 1669		&id_phys->alternate_paths_phys_connector,
 1670		sizeof(device->phys_connector));
 1671	device->bay = id_phys->phys_bay_in_box;
 1672	device->lun_count = id_phys->multi_lun_device_lun_count;
 1673	if ((id_phys->even_more_flags & PQI_DEVICE_PHY_MAP_SUPPORTED) &&
 1674		id_phys->phy_count)
 1675		device->phy_id =
 1676			id_phys->phy_to_phy_map[device->active_path_index];
 1677	else
 1678		device->phy_id = 0xFF;
 1679
 1680	device->ncq_prio_support =
 1681		((get_unaligned_le32(&id_phys->misc_drive_flags) >> 16) &
 1682		PQI_DEVICE_NCQ_PRIO_SUPPORTED);
 1683
 1684	device->erase_in_progress = !!(get_unaligned_le16(&id_phys->extra_physical_drive_flags) & PQI_DEVICE_ERASE_IN_PROGRESS);
 1685
 1686	return 0;
 1687}
 1688
 1689static int pqi_get_logical_device_info(struct pqi_ctrl_info *ctrl_info,
 1690	struct pqi_scsi_dev *device)
 1691{
 1692	int rc;
 1693	u8 *buffer;
 1694
 1695	buffer = kmalloc(64, GFP_KERNEL);
 1696	if (!buffer)
 1697		return -ENOMEM;
 1698
 1699	/* Send an inquiry to the device to see what it is. */
 1700	rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 0, buffer, 64);
 1701	if (rc)
 1702		goto out;
 1703
 1704	scsi_sanitize_inquiry_string(&buffer[8], 8);
 1705	scsi_sanitize_inquiry_string(&buffer[16], 16);
 1706
 1707	device->devtype = buffer[0] & 0x1f;
 1708	memcpy(device->vendor, &buffer[8], sizeof(device->vendor));
 1709	memcpy(device->model, &buffer[16], sizeof(device->model));
 1710
 1711	if (device->devtype == TYPE_DISK) {
 1712		if (device->is_external_raid_device) {
 1713			device->raid_level = SA_RAID_UNKNOWN;
 1714			device->volume_status = CISS_LV_OK;
 1715			device->volume_offline = false;
 1716		} else {
 1717			pqi_get_raid_level(ctrl_info, device);
 1718			pqi_get_raid_bypass_status(ctrl_info, device);
 1719			pqi_get_volume_status(ctrl_info, device);
 1720		}
 1721	}
 1722
 1723out:
 1724	kfree(buffer);
 1725
 1726	return rc;
 1727}
 1728
 1729/*
 1730 * Prevent adding drive to OS for some corner cases such as a drive
 1731 * undergoing a sanitize (erase) operation. Some OSes will continue to poll
 1732 * the drive until the sanitize completes, which can take hours,
 1733 * resulting in long bootup delays. Commands such as TUR, READ_CAP
 1734 * are allowed, but READ/WRITE cause check condition. So the OS
 1735 * cannot check/read the partition table.
 1736 * Note: devices that have completed sanitize must be re-enabled
 1737 *       using the management utility.
 1738 */
 1739static inline bool pqi_keep_device_offline(struct pqi_scsi_dev *device)
 1740{
 1741	return device->erase_in_progress;
 1742}
 1743
 1744static int pqi_get_device_info_phys_logical(struct pqi_ctrl_info *ctrl_info,
 1745	struct pqi_scsi_dev *device,
 1746	struct bmic_identify_physical_device *id_phys)
 1747{
 1748	int rc;
 1749
 1750	if (device->is_expander_smp_device)
 1751		return 0;
 1752
 1753	if (pqi_is_logical_device(device))
 1754		rc = pqi_get_logical_device_info(ctrl_info, device);
 1755	else
 1756		rc = pqi_get_physical_device_info(ctrl_info, device, id_phys);
 1757
 1758	return rc;
 1759}
 1760
 1761static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info,
 1762	struct pqi_scsi_dev *device,
 1763	struct bmic_identify_physical_device *id_phys)
 1764{
 1765	int rc;
 1766
 1767	rc = pqi_get_device_info_phys_logical(ctrl_info, device, id_phys);
 1768
 1769	if (rc == 0 && device->lun_count == 0)
 1770		device->lun_count = 1;
 1771
 1772	return rc;
 1773}
 1774
 1775static void pqi_show_volume_status(struct pqi_ctrl_info *ctrl_info,
 1776	struct pqi_scsi_dev *device)
 1777{
 1778	char *status;
 1779	static const char unknown_state_str[] =
 1780		"Volume is in an unknown state (%u)";
 1781	char unknown_state_buffer[sizeof(unknown_state_str) + 10];
 1782
 1783	switch (device->volume_status) {
 1784	case CISS_LV_OK:
 1785		status = "Volume online";
 1786		break;
 1787	case CISS_LV_FAILED:
 1788		status = "Volume failed";
 1789		break;
 1790	case CISS_LV_NOT_CONFIGURED:
 1791		status = "Volume not configured";
 1792		break;
 1793	case CISS_LV_DEGRADED:
 1794		status = "Volume degraded";
 1795		break;
 1796	case CISS_LV_READY_FOR_RECOVERY:
 1797		status = "Volume ready for recovery operation";
 1798		break;
 1799	case CISS_LV_UNDERGOING_RECOVERY:
 1800		status = "Volume undergoing recovery";
 1801		break;
 1802	case CISS_LV_WRONG_PHYSICAL_DRIVE_REPLACED:
 1803		status = "Wrong physical drive was replaced";
 1804		break;
 1805	case CISS_LV_PHYSICAL_DRIVE_CONNECTION_PROBLEM:
 1806		status = "A physical drive not properly connected";
 1807		break;
 1808	case CISS_LV_HARDWARE_OVERHEATING:
 1809		status = "Hardware is overheating";
 1810		break;
 1811	case CISS_LV_HARDWARE_HAS_OVERHEATED:
 1812		status = "Hardware has overheated";
 1813		break;
 1814	case CISS_LV_UNDERGOING_EXPANSION:
 1815		status = "Volume undergoing expansion";
 1816		break;
 1817	case CISS_LV_NOT_AVAILABLE:
 1818		status = "Volume waiting for transforming volume";
 1819		break;
 1820	case CISS_LV_QUEUED_FOR_EXPANSION:
 1821		status = "Volume queued for expansion";
 1822		break;
 1823	case CISS_LV_DISABLED_SCSI_ID_CONFLICT:
 1824		status = "Volume disabled due to SCSI ID conflict";
 1825		break;
 1826	case CISS_LV_EJECTED:
 1827		status = "Volume has been ejected";
 1828		break;
 1829	case CISS_LV_UNDERGOING_ERASE:
 1830		status = "Volume undergoing background erase";
 1831		break;
 1832	case CISS_LV_READY_FOR_PREDICTIVE_SPARE_REBUILD:
 1833		status = "Volume ready for predictive spare rebuild";
 1834		break;
 1835	case CISS_LV_UNDERGOING_RPI:
 1836		status = "Volume undergoing rapid parity initialization";
 1837		break;
 1838	case CISS_LV_PENDING_RPI:
 1839		status = "Volume queued for rapid parity initialization";
 1840		break;
 1841	case CISS_LV_ENCRYPTED_NO_KEY:
 1842		status = "Encrypted volume inaccessible - key not present";
 1843		break;
 1844	case CISS_LV_UNDERGOING_ENCRYPTION:
 1845		status = "Volume undergoing encryption process";
 1846		break;
 1847	case CISS_LV_UNDERGOING_ENCRYPTION_REKEYING:
 1848		status = "Volume undergoing encryption re-keying process";
 1849		break;
 1850	case CISS_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
 1851		status = "Volume encrypted but encryption is disabled";
 1852		break;
 1853	case CISS_LV_PENDING_ENCRYPTION:
 1854		status = "Volume pending migration to encrypted state";
 1855		break;
 1856	case CISS_LV_PENDING_ENCRYPTION_REKEYING:
 1857		status = "Volume pending encryption rekeying";
 1858		break;
 1859	case CISS_LV_NOT_SUPPORTED:
 1860		status = "Volume not supported on this controller";
 1861		break;
 1862	case CISS_LV_STATUS_UNAVAILABLE:
 1863		status = "Volume status not available";
 1864		break;
 1865	default:
 1866		snprintf(unknown_state_buffer, sizeof(unknown_state_buffer),
 1867			unknown_state_str, device->volume_status);
 1868		status = unknown_state_buffer;
 1869		break;
 1870	}
 1871
 1872	dev_info(&ctrl_info->pci_dev->dev,
 1873		"scsi %d:%d:%d:%d %s\n",
 1874		ctrl_info->scsi_host->host_no,
 1875		device->bus, device->target, device->lun, status);
 1876}
 1877
 1878static void pqi_rescan_worker(struct work_struct *work)
 1879{
 1880	struct pqi_ctrl_info *ctrl_info;
 1881
 1882	ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
 1883		rescan_work);
 1884
 1885	pqi_scan_scsi_devices(ctrl_info);
 1886}
 1887
 1888static int pqi_add_device(struct pqi_ctrl_info *ctrl_info,
 1889	struct pqi_scsi_dev *device)
 1890{
 1891	int rc;
 1892
 1893	if (pqi_is_logical_device(device))
 1894		rc = scsi_add_device(ctrl_info->scsi_host, device->bus,
 1895			device->target, device->lun);
 1896	else
 1897		rc = pqi_add_sas_device(ctrl_info->sas_host, device);
 1898
 1899	return rc;
 1900}
 1901
 1902#define PQI_REMOVE_DEVICE_PENDING_IO_TIMEOUT_MSECS	(20 * 1000)
 1903
 1904static inline void pqi_remove_device(struct pqi_ctrl_info *ctrl_info, struct pqi_scsi_dev *device)
 1905{
 1906	int rc;
 1907	int lun;
 1908
 1909	for (lun = 0; lun < device->lun_count; lun++) {
 1910		rc = pqi_device_wait_for_pending_io(ctrl_info, device, lun,
 1911			PQI_REMOVE_DEVICE_PENDING_IO_TIMEOUT_MSECS);
 1912		if (rc)
 1913			dev_err(&ctrl_info->pci_dev->dev,
 1914				"scsi %d:%d:%d:%d removing device with %d outstanding command(s)\n",
 1915				ctrl_info->scsi_host->host_no, device->bus,
 1916				device->target, lun,
 1917				atomic_read(&device->scsi_cmds_outstanding[lun]));
 1918	}
 1919
 1920	if (pqi_is_logical_device(device))
 1921		scsi_remove_device(device->sdev);
 1922	else
 1923		pqi_remove_sas_device(device);
 1924
 1925	pqi_device_remove_start(device);
 1926}
 1927
 1928/* Assumes the SCSI device list lock is held. */
 1929
 1930static struct pqi_scsi_dev *pqi_find_scsi_dev(struct pqi_ctrl_info *ctrl_info,
 1931	int bus, int target, int lun)
 1932{
 1933	struct pqi_scsi_dev *device;
 1934
 1935	list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry)
 1936		if (device->bus == bus && device->target == target && device->lun == lun)
 1937			return device;
 1938
 1939	return NULL;
 1940}
 1941
 1942static inline bool pqi_device_equal(struct pqi_scsi_dev *dev1, struct pqi_scsi_dev *dev2)
 1943{
 1944	if (dev1->is_physical_device != dev2->is_physical_device)
 1945		return false;
 1946
 1947	if (dev1->is_physical_device)
 1948		return memcmp(dev1->wwid, dev2->wwid, sizeof(dev1->wwid)) == 0;
 1949
 1950	return memcmp(dev1->volume_id, dev2->volume_id, sizeof(dev1->volume_id)) == 0;
 1951}
 1952
 1953enum pqi_find_result {
 1954	DEVICE_NOT_FOUND,
 1955	DEVICE_CHANGED,
 1956	DEVICE_SAME,
 1957};
 1958
 1959static enum pqi_find_result pqi_scsi_find_entry(struct pqi_ctrl_info *ctrl_info,
 1960	struct pqi_scsi_dev *device_to_find, struct pqi_scsi_dev **matching_device)
 1961{
 1962	struct pqi_scsi_dev *device;
 1963
 1964	list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry) {
 1965		if (pqi_scsi3addr_equal(device_to_find->scsi3addr, device->scsi3addr)) {
 1966			*matching_device = device;
 1967			if (pqi_device_equal(device_to_find, device)) {
 1968				if (device_to_find->volume_offline)
 1969					return DEVICE_CHANGED;
 1970				return DEVICE_SAME;
 1971			}
 1972			return DEVICE_CHANGED;
 1973		}
 1974	}
 1975
 1976	return DEVICE_NOT_FOUND;
 1977}
 1978
 1979static inline const char *pqi_device_type(struct pqi_scsi_dev *device)
 1980{
 1981	if (device->is_expander_smp_device)
 1982		return "Enclosure SMP    ";
 1983
 1984	return scsi_device_type(device->devtype);
 1985}
 1986
 1987#define PQI_DEV_INFO_BUFFER_LENGTH	128
 1988
 1989static void pqi_dev_info(struct pqi_ctrl_info *ctrl_info,
 1990	char *action, struct pqi_scsi_dev *device)
 1991{
 1992	ssize_t count;
 1993	char buffer[PQI_DEV_INFO_BUFFER_LENGTH];
 1994
 1995	count = scnprintf(buffer, PQI_DEV_INFO_BUFFER_LENGTH,
 1996		"%d:%d:", ctrl_info->scsi_host->host_no, device->bus);
 1997
 1998	if (device->target_lun_valid)
 1999		count += scnprintf(buffer + count,
 2000			PQI_DEV_INFO_BUFFER_LENGTH - count,
 2001			"%d:%d",
 2002			device->target,
 2003			device->lun);
 2004	else
 2005		count += scnprintf(buffer + count,
 2006			PQI_DEV_INFO_BUFFER_LENGTH - count,
 2007			"-:-");
 2008
 2009	if (pqi_is_logical_device(device))
 2010		count += scnprintf(buffer + count,
 2011			PQI_DEV_INFO_BUFFER_LENGTH - count,
 2012			" %08x%08x",
 2013			*((u32 *)&device->scsi3addr),
 2014			*((u32 *)&device->scsi3addr[4]));
 2015	else
 2016		count += scnprintf(buffer + count,
 2017			PQI_DEV_INFO_BUFFER_LENGTH - count,
 2018			" %016llx%016llx",
 2019			get_unaligned_be64(&device->wwid[0]),
 2020			get_unaligned_be64(&device->wwid[8]));
 2021
 2022	count += scnprintf(buffer + count, PQI_DEV_INFO_BUFFER_LENGTH - count,
 2023		" %s %.8s %.16s ",
 2024		pqi_device_type(device),
 2025		device->vendor,
 2026		device->model);
 2027
 2028	if (pqi_is_logical_device(device)) {
 2029		if (device->devtype == TYPE_DISK)
 2030			count += scnprintf(buffer + count,
 2031				PQI_DEV_INFO_BUFFER_LENGTH - count,
 2032				"SSDSmartPathCap%c En%c %-12s",
 2033				device->raid_bypass_configured ? '+' : '-',
 2034				device->raid_bypass_enabled ? '+' : '-',
 2035				pqi_raid_level_to_string(device->raid_level));
 2036	} else {
 2037		count += scnprintf(buffer + count,
 2038			PQI_DEV_INFO_BUFFER_LENGTH - count,
 2039			"AIO%c", device->aio_enabled ? '+' : '-');
 2040		if (device->devtype == TYPE_DISK ||
 2041			device->devtype == TYPE_ZBC)
 2042			count += scnprintf(buffer + count,
 2043				PQI_DEV_INFO_BUFFER_LENGTH - count,
 2044				" qd=%-6d", device->queue_depth);
 2045	}
 2046
 2047	dev_info(&ctrl_info->pci_dev->dev, "%s %s\n", action, buffer);
 2048}
 2049
 2050static bool pqi_raid_maps_equal(struct raid_map *raid_map1, struct raid_map *raid_map2)
 2051{
 2052	u32 raid_map1_size;
 2053	u32 raid_map2_size;
 2054
 2055	if (raid_map1 == NULL || raid_map2 == NULL)
 2056		return raid_map1 == raid_map2;
 2057
 2058	raid_map1_size = get_unaligned_le32(&raid_map1->structure_size);
 2059	raid_map2_size = get_unaligned_le32(&raid_map2->structure_size);
 2060
 2061	if (raid_map1_size != raid_map2_size)
 2062		return false;
 2063
 2064	return memcmp(raid_map1, raid_map2, raid_map1_size) == 0;
 2065}
 2066
 2067/* Assumes the SCSI device list lock is held. */
 2068
 2069static void pqi_scsi_update_device(struct pqi_ctrl_info *ctrl_info,
 2070	struct pqi_scsi_dev *existing_device, struct pqi_scsi_dev *new_device)
 2071{
 2072	existing_device->device_type = new_device->device_type;
 2073	existing_device->bus = new_device->bus;
 2074	if (new_device->target_lun_valid) {
 2075		existing_device->target = new_device->target;
 2076		existing_device->lun = new_device->lun;
 2077		existing_device->target_lun_valid = true;
 2078	}
 2079
 2080	/* By definition, the scsi3addr and wwid fields are already the same. */
 2081
 2082	existing_device->is_physical_device = new_device->is_physical_device;
 2083	memcpy(existing_device->vendor, new_device->vendor, sizeof(existing_device->vendor));
 2084	memcpy(existing_device->model, new_device->model, sizeof(existing_device->model));
 2085	existing_device->sas_address = new_device->sas_address;
 2086	existing_device->queue_depth = new_device->queue_depth;
 2087	existing_device->device_offline = false;
 2088	existing_device->lun_count = new_device->lun_count;
 2089
 2090	if (pqi_is_logical_device(existing_device)) {
 2091		existing_device->is_external_raid_device = new_device->is_external_raid_device;
 2092
 2093		if (existing_device->devtype == TYPE_DISK) {
 2094			existing_device->raid_level = new_device->raid_level;
 2095			existing_device->volume_status = new_device->volume_status;
 2096			memset(existing_device->next_bypass_group, 0, sizeof(existing_device->next_bypass_group));
 2097			if (!pqi_raid_maps_equal(existing_device->raid_map, new_device->raid_map)) {
 2098				kfree(existing_device->raid_map);
 2099				existing_device->raid_map = new_device->raid_map;
 2100				/* To prevent this from being freed later. */
 2101				new_device->raid_map = NULL;
 2102			}
 2103			existing_device->raid_bypass_configured = new_device->raid_bypass_configured;
 2104			existing_device->raid_bypass_enabled = new_device->raid_bypass_enabled;
 2105		}
 2106	} else {
 2107		existing_device->aio_enabled = new_device->aio_enabled;
 2108		existing_device->aio_handle = new_device->aio_handle;
 2109		existing_device->is_expander_smp_device = new_device->is_expander_smp_device;
 2110		existing_device->active_path_index = new_device->active_path_index;
 2111		existing_device->phy_id = new_device->phy_id;
 2112		existing_device->path_map = new_device->path_map;
 2113		existing_device->bay = new_device->bay;
 2114		existing_device->box_index = new_device->box_index;
 2115		existing_device->phys_box_on_bus = new_device->phys_box_on_bus;
 2116		existing_device->phy_connected_dev_type = new_device->phy_connected_dev_type;
 2117		memcpy(existing_device->box, new_device->box, sizeof(existing_device->box));
 2118		memcpy(existing_device->phys_connector, new_device->phys_connector, sizeof(existing_device->phys_connector));
 2119	}
 2120}
 2121
 2122static inline void pqi_free_device(struct pqi_scsi_dev *device)
 2123{
 2124	if (device) {
 2125		kfree(device->raid_map);
 2126		kfree(device);
 2127	}
 2128}
 2129
 2130/*
 2131 * Called when exposing a new device to the OS fails in order to re-adjust
 2132 * our internal SCSI device list to match the SCSI ML's view.
 2133 */
 2134
 2135static inline void pqi_fixup_botched_add(struct pqi_ctrl_info *ctrl_info,
 2136	struct pqi_scsi_dev *device)
 2137{
 2138	unsigned long flags;
 2139
 2140	spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
 2141	list_del(&device->scsi_device_list_entry);
 2142	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 2143
 2144	/* Allow the device structure to be freed later. */
 2145	device->keep_device = false;
 2146}
 2147
 2148static inline bool pqi_is_device_added(struct pqi_scsi_dev *device)
 2149{
 2150	if (device->is_expander_smp_device)
 2151		return device->sas_port != NULL;
 2152
 2153	return device->sdev != NULL;
 2154}
 2155
 2156static inline void pqi_init_device_tmf_work(struct pqi_scsi_dev *device)
 2157{
 2158	unsigned int lun;
 2159	struct pqi_tmf_work *tmf_work;
 2160
 2161	for (lun = 0, tmf_work = device->tmf_work; lun < PQI_MAX_LUNS_PER_DEVICE; lun++, tmf_work++)
 2162		INIT_WORK(&tmf_work->work_struct, pqi_tmf_worker);
 2163}
 2164
 2165static inline bool pqi_volume_rescan_needed(struct pqi_scsi_dev *device)
 2166{
 2167	if (pqi_device_in_remove(device))
 2168		return false;
 2169
 2170	if (device->sdev == NULL)
 2171		return false;
 2172
 2173	if (!scsi_device_online(device->sdev))
 2174		return false;
 2175
 2176	return device->rescan;
 2177}
 2178
 2179static void pqi_update_device_list(struct pqi_ctrl_info *ctrl_info,
 2180	struct pqi_scsi_dev *new_device_list[], unsigned int num_new_devices)
 2181{
 2182	int rc;
 2183	unsigned int i;
 2184	unsigned long flags;
 2185	enum pqi_find_result find_result;
 2186	struct pqi_scsi_dev *device;
 2187	struct pqi_scsi_dev *next;
 2188	struct pqi_scsi_dev *matching_device;
 2189	LIST_HEAD(add_list);
 2190	LIST_HEAD(delete_list);
 2191
 2192	/*
 2193	 * The idea here is to do as little work as possible while holding the
 2194	 * spinlock.  That's why we go to great pains to defer anything other
 2195	 * than updating the internal device list until after we release the
 2196	 * spinlock.
 2197	 */
 2198
 2199	spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
 2200
 2201	/* Assume that all devices in the existing list have gone away. */
 2202	list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry)
 2203		device->device_gone = true;
 2204
 2205	for (i = 0; i < num_new_devices; i++) {
 2206		device = new_device_list[i];
 2207
 2208		find_result = pqi_scsi_find_entry(ctrl_info, device,
 2209			&matching_device);
 2210
 2211		switch (find_result) {
 2212		case DEVICE_SAME:
 2213			/*
 2214			 * The newly found device is already in the existing
 2215			 * device list.
 2216			 */
 2217			device->new_device = false;
 2218			matching_device->device_gone = false;
 2219			pqi_scsi_update_device(ctrl_info, matching_device, device);
 2220			break;
 2221		case DEVICE_NOT_FOUND:
 2222			/*
 2223			 * The newly found device is NOT in the existing device
 2224			 * list.
 2225			 */
 2226			device->new_device = true;
 2227			break;
 2228		case DEVICE_CHANGED:
 2229			/*
 2230			 * The original device has gone away and we need to add
 2231			 * the new device.
 2232			 */
 2233			device->new_device = true;
 2234			break;
 2235		}
 2236	}
 2237
 2238	/* Process all devices that have gone away. */
 2239	list_for_each_entry_safe(device, next, &ctrl_info->scsi_device_list,
 2240		scsi_device_list_entry) {
 2241		if (device->device_gone) {
 2242			list_del(&device->scsi_device_list_entry);
 2243			list_add_tail(&device->delete_list_entry, &delete_list);
 2244		}
 2245	}
 2246
 2247	/* Process all new devices. */
 2248	for (i = 0; i < num_new_devices; i++) {
 2249		device = new_device_list[i];
 2250		if (!device->new_device)
 2251			continue;
 2252		if (device->volume_offline)
 2253			continue;
 2254		list_add_tail(&device->scsi_device_list_entry,
 2255			&ctrl_info->scsi_device_list);
 2256		list_add_tail(&device->add_list_entry, &add_list);
 2257		/* To prevent this device structure from being freed later. */
 2258		device->keep_device = true;
 2259		pqi_init_device_tmf_work(device);
 2260	}
 2261
 2262	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 2263
 2264	/*
 2265	 * If OFA is in progress and there are devices that need to be deleted,
 2266	 * allow any pending reset operations to continue and unblock any SCSI
 2267	 * requests before removal.
 2268	 */
 2269	if (pqi_ofa_in_progress(ctrl_info)) {
 2270		list_for_each_entry_safe(device, next, &delete_list, delete_list_entry)
 2271			if (pqi_is_device_added(device))
 2272				pqi_device_remove_start(device);
 2273		pqi_ctrl_unblock_device_reset(ctrl_info);
 2274		pqi_scsi_unblock_requests(ctrl_info);
 2275	}
 2276
 2277	/* Remove all devices that have gone away. */
 2278	list_for_each_entry_safe(device, next, &delete_list, delete_list_entry) {
 2279		if (device->volume_offline) {
 2280			pqi_dev_info(ctrl_info, "offline", device);
 2281			pqi_show_volume_status(ctrl_info, device);
 2282		} else {
 2283			pqi_dev_info(ctrl_info, "removed", device);
 2284		}
 2285		if (pqi_is_device_added(device))
 2286			pqi_remove_device(ctrl_info, device);
 2287		list_del(&device->delete_list_entry);
 2288		pqi_free_device(device);
 2289	}
 2290
 2291	/*
 2292	 * Notify the SML of any existing device changes such as;
 2293	 * queue depth, device size.
 2294	 */
 2295	list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry) {
 2296		if (device->sdev && device->queue_depth != device->advertised_queue_depth) {
 2297			device->advertised_queue_depth = device->queue_depth;
 2298			scsi_change_queue_depth(device->sdev, device->advertised_queue_depth);
 2299			spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
 2300			if (pqi_volume_rescan_needed(device)) {
 2301				device->rescan = false;
 2302				spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 2303				scsi_rescan_device(device->sdev);
 2304			} else {
 2305				spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 2306			}
 2307		}
 2308	}
 2309
 2310	/* Expose any new devices. */
 2311	list_for_each_entry_safe(device, next, &add_list, add_list_entry) {
 2312		if (!pqi_is_device_added(device)) {
 2313			rc = pqi_add_device(ctrl_info, device);
 2314			if (rc == 0) {
 2315				pqi_dev_info(ctrl_info, "added", device);
 2316			} else {
 2317				dev_warn(&ctrl_info->pci_dev->dev,
 2318					"scsi %d:%d:%d:%d addition failed, device not added\n",
 2319					ctrl_info->scsi_host->host_no,
 2320					device->bus, device->target,
 2321					device->lun);
 2322				pqi_fixup_botched_add(ctrl_info, device);
 2323			}
 2324		}
 2325	}
 2326
 2327}
 2328
 2329static inline bool pqi_is_supported_device(struct pqi_scsi_dev *device)
 2330{
 2331	/*
 2332	 * Only support the HBA controller itself as a RAID
 2333	 * controller.  If it's a RAID controller other than
 2334	 * the HBA itself (an external RAID controller, for
 2335	 * example), we don't support it.
 2336	 */
 2337	if (device->device_type == SA_DEVICE_TYPE_CONTROLLER &&
 2338		!pqi_is_hba_lunid(device->scsi3addr))
 2339			return false;
 2340
 2341	return true;
 2342}
 2343
 2344static inline bool pqi_skip_device(u8 *scsi3addr)
 2345{
 2346	/* Ignore all masked devices. */
 2347	if (MASKED_DEVICE(scsi3addr))
 2348		return true;
 2349
 2350	return false;
 2351}
 2352
 2353static inline void pqi_mask_device(u8 *scsi3addr)
 2354{
 2355	scsi3addr[3] |= 0xc0;
 2356}
 2357
 2358static inline bool pqi_is_multipath_device(struct pqi_scsi_dev *device)
 2359{
 2360	if (pqi_is_logical_device(device))
 2361		return false;
 2362
 2363	return (device->path_map & (device->path_map - 1)) != 0;
 2364}
 2365
 2366static inline bool pqi_expose_device(struct pqi_scsi_dev *device)
 2367{
 2368	return !device->is_physical_device || !pqi_skip_device(device->scsi3addr);
 2369}
 2370
 2371static int pqi_update_scsi_devices(struct pqi_ctrl_info *ctrl_info)
 2372{
 2373	int i;
 2374	int rc;
 2375	LIST_HEAD(new_device_list_head);
 2376	struct report_phys_lun_16byte_wwid_list *physdev_list = NULL;
 2377	struct report_log_lun_list *logdev_list = NULL;
 2378	struct report_phys_lun_16byte_wwid *phys_lun;
 2379	struct report_log_lun *log_lun;
 2380	struct bmic_identify_physical_device *id_phys = NULL;
 2381	u32 num_physicals;
 2382	u32 num_logicals;
 2383	struct pqi_scsi_dev **new_device_list = NULL;
 2384	struct pqi_scsi_dev *device;
 2385	struct pqi_scsi_dev *next;
 2386	unsigned int num_new_devices;
 2387	unsigned int num_valid_devices;
 2388	bool is_physical_device;
 2389	u8 *scsi3addr;
 2390	unsigned int physical_index;
 2391	unsigned int logical_index;
 2392	static char *out_of_memory_msg =
 2393		"failed to allocate memory, device discovery stopped";
 2394
 2395	rc = pqi_get_device_lists(ctrl_info, &physdev_list, &logdev_list);
 2396	if (rc)
 2397		goto out;
 2398
 2399	if (physdev_list)
 2400		num_physicals =
 2401			get_unaligned_be32(&physdev_list->header.list_length)
 2402				/ sizeof(physdev_list->lun_entries[0]);
 2403	else
 2404		num_physicals = 0;
 2405
 2406	if (logdev_list)
 2407		num_logicals =
 2408			get_unaligned_be32(&logdev_list->header.list_length)
 2409				/ sizeof(logdev_list->lun_entries[0]);
 2410	else
 2411		num_logicals = 0;
 2412
 2413	if (num_physicals) {
 2414		/*
 2415		 * We need this buffer for calls to pqi_get_physical_disk_info()
 2416		 * below.  We allocate it here instead of inside
 2417		 * pqi_get_physical_disk_info() because it's a fairly large
 2418		 * buffer.
 2419		 */
 2420		id_phys = kmalloc(sizeof(*id_phys), GFP_KERNEL);
 2421		if (!id_phys) {
 2422			dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
 2423				out_of_memory_msg);
 2424			rc = -ENOMEM;
 2425			goto out;
 2426		}
 2427
 2428		if (pqi_hide_vsep) {
 2429			for (i = num_physicals - 1; i >= 0; i--) {
 2430				phys_lun = &physdev_list->lun_entries[i];
 2431				if (CISS_GET_DRIVE_NUMBER(phys_lun->lunid) == PQI_VSEP_CISS_BTL) {
 2432					pqi_mask_device(phys_lun->lunid);
 2433					break;
 2434				}
 2435			}
 2436		}
 2437	}
 2438
 2439	if (num_logicals &&
 2440		(logdev_list->header.flags & CISS_REPORT_LOG_FLAG_DRIVE_TYPE_MIX))
 2441		ctrl_info->lv_drive_type_mix_valid = true;
 2442
 2443	num_new_devices = num_physicals + num_logicals;
 2444
 2445	new_device_list = kmalloc_array(num_new_devices,
 2446					sizeof(*new_device_list),
 2447					GFP_KERNEL);
 2448	if (!new_device_list) {
 2449		dev_warn(&ctrl_info->pci_dev->dev, "%s\n", out_of_memory_msg);
 2450		rc = -ENOMEM;
 2451		goto out;
 2452	}
 2453
 2454	for (i = 0; i < num_new_devices; i++) {
 2455		device = kzalloc(sizeof(*device), GFP_KERNEL);
 2456		if (!device) {
 2457			dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
 2458				out_of_memory_msg);
 2459			rc = -ENOMEM;
 2460			goto out;
 2461		}
 2462		list_add_tail(&device->new_device_list_entry,
 2463			&new_device_list_head);
 2464	}
 2465
 2466	device = NULL;
 2467	num_valid_devices = 0;
 2468	physical_index = 0;
 2469	logical_index = 0;
 2470
 2471	for (i = 0; i < num_new_devices; i++) {
 2472
 2473		if ((!pqi_expose_ld_first && i < num_physicals) ||
 2474			(pqi_expose_ld_first && i >= num_logicals)) {
 2475			is_physical_device = true;
 2476			phys_lun = &physdev_list->lun_entries[physical_index++];
 2477			log_lun = NULL;
 2478			scsi3addr = phys_lun->lunid;
 2479		} else {
 2480			is_physical_device = false;
 2481			phys_lun = NULL;
 2482			log_lun = &logdev_list->lun_entries[logical_index++];
 2483			scsi3addr = log_lun->lunid;
 2484		}
 2485
 2486		if (is_physical_device && pqi_skip_device(scsi3addr))
 2487			continue;
 2488
 2489		if (device)
 2490			device = list_next_entry(device, new_device_list_entry);
 2491		else
 2492			device = list_first_entry(&new_device_list_head,
 2493				struct pqi_scsi_dev, new_device_list_entry);
 2494
 2495		memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
 2496		device->is_physical_device = is_physical_device;
 2497		if (is_physical_device) {
 2498			device->device_type = phys_lun->device_type;
 2499			if (device->device_type == SA_DEVICE_TYPE_EXPANDER_SMP)
 2500				device->is_expander_smp_device = true;
 2501		} else {
 2502			device->is_external_raid_device =
 2503				pqi_is_external_raid_addr(scsi3addr);
 2504		}
 2505
 2506		if (!pqi_is_supported_device(device))
 2507			continue;
 2508
 2509		/* Gather information about the device. */
 2510		rc = pqi_get_device_info(ctrl_info, device, id_phys);
 2511		if (rc == -ENOMEM) {
 2512			dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
 2513				out_of_memory_msg);
 2514			goto out;
 2515		}
 2516		if (rc) {
 2517			if (device->is_physical_device)
 2518				dev_warn(&ctrl_info->pci_dev->dev,
 2519					"obtaining device info failed, skipping physical device %016llx%016llx\n",
 2520					get_unaligned_be64(&phys_lun->wwid[0]),
 2521					get_unaligned_be64(&phys_lun->wwid[8]));
 2522			else
 2523				dev_warn(&ctrl_info->pci_dev->dev,
 2524					"obtaining device info failed, skipping logical device %08x%08x\n",
 2525					*((u32 *)&device->scsi3addr),
 2526					*((u32 *)&device->scsi3addr[4]));
 2527			rc = 0;
 2528			continue;
 2529		}
 2530
 2531		/* Do not present disks that the OS cannot fully probe. */
 2532		if (pqi_keep_device_offline(device))
 2533			continue;
 2534
 2535		pqi_assign_bus_target_lun(device);
 2536
 2537		if (device->is_physical_device) {
 2538			memcpy(device->wwid, phys_lun->wwid, sizeof(device->wwid));
 2539			if ((phys_lun->device_flags &
 2540				CISS_REPORT_PHYS_DEV_FLAG_AIO_ENABLED) &&
 2541				phys_lun->aio_handle) {
 2542					device->aio_enabled = true;
 2543					device->aio_handle =
 2544						phys_lun->aio_handle;
 2545			}
 2546		} else {
 2547			memcpy(device->volume_id, log_lun->volume_id,
 2548				sizeof(device->volume_id));
 2549		}
 2550
 2551		device->sas_address = get_unaligned_be64(&device->wwid[0]);
 2552
 2553		new_device_list[num_valid_devices++] = device;
 2554	}
 2555
 2556	pqi_update_device_list(ctrl_info, new_device_list, num_valid_devices);
 2557
 2558out:
 2559	list_for_each_entry_safe(device, next, &new_device_list_head,
 2560		new_device_list_entry) {
 2561		if (device->keep_device)
 2562			continue;
 2563		list_del(&device->new_device_list_entry);
 2564		pqi_free_device(device);
 2565	}
 2566
 2567	kfree(new_device_list);
 2568	kfree(physdev_list);
 2569	kfree(logdev_list);
 2570	kfree(id_phys);
 2571
 2572	return rc;
 2573}
 2574
 2575static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info)
 2576{
 2577	int rc;
 2578	int mutex_acquired;
 2579
 2580	if (pqi_ctrl_offline(ctrl_info))
 2581		return -ENXIO;
 2582
 2583	mutex_acquired = mutex_trylock(&ctrl_info->scan_mutex);
 2584
 2585	if (!mutex_acquired) {
 2586		if (pqi_ctrl_scan_blocked(ctrl_info))
 2587			return -EBUSY;
 2588		pqi_schedule_rescan_worker_delayed(ctrl_info);
 2589		return -EINPROGRESS;
 2590	}
 2591
 2592	rc = pqi_update_scsi_devices(ctrl_info);
 2593	if (rc && !pqi_ctrl_scan_blocked(ctrl_info))
 2594		pqi_schedule_rescan_worker_delayed(ctrl_info);
 2595
 2596	mutex_unlock(&ctrl_info->scan_mutex);
 2597
 2598	return rc;
 2599}
 2600
 2601static void pqi_scan_start(struct Scsi_Host *shost)
 2602{
 2603	struct pqi_ctrl_info *ctrl_info;
 2604
 2605	ctrl_info = shost_to_hba(shost);
 2606
 2607	pqi_scan_scsi_devices(ctrl_info);
 2608}
 2609
 2610/* Returns TRUE if scan is finished. */
 2611
 2612static int pqi_scan_finished(struct Scsi_Host *shost,
 2613	unsigned long elapsed_time)
 2614{
 2615	struct pqi_ctrl_info *ctrl_info;
 2616
 2617	ctrl_info = shost_priv(shost);
 2618
 2619	return !mutex_is_locked(&ctrl_info->scan_mutex);
 2620}
 2621
 2622static inline void pqi_set_encryption_info(struct pqi_encryption_info *encryption_info,
 2623	struct raid_map *raid_map, u64 first_block)
 2624{
 2625	u32 volume_blk_size;
 2626
 2627	/*
 2628	 * Set the encryption tweak values based on logical block address.
 2629	 * If the block size is 512, the tweak value is equal to the LBA.
 2630	 * For other block sizes, tweak value is (LBA * block size) / 512.
 2631	 */
 2632	volume_blk_size = get_unaligned_le32(&raid_map->volume_blk_size);
 2633	if (volume_blk_size != 512)
 2634		first_block = (first_block * volume_blk_size) / 512;
 2635
 2636	encryption_info->data_encryption_key_index =
 2637		get_unaligned_le16(&raid_map->data_encryption_key_index);
 2638	encryption_info->encrypt_tweak_lower = lower_32_bits(first_block);
 2639	encryption_info->encrypt_tweak_upper = upper_32_bits(first_block);
 2640}
 2641
 2642/*
 2643 * Attempt to perform RAID bypass mapping for a logical volume I/O.
 2644 */
 2645
 2646static bool pqi_aio_raid_level_supported(struct pqi_ctrl_info *ctrl_info,
 2647	struct pqi_scsi_dev_raid_map_data *rmd)
 2648{
 2649	bool is_supported = true;
 2650
 2651	switch (rmd->raid_level) {
 2652	case SA_RAID_0:
 2653		break;
 2654	case SA_RAID_1:
 2655		if (rmd->is_write && (!ctrl_info->enable_r1_writes ||
 2656			rmd->data_length > ctrl_info->max_write_raid_1_10_2drive))
 2657			is_supported = false;
 2658		break;
 2659	case SA_RAID_TRIPLE:
 2660		if (rmd->is_write && (!ctrl_info->enable_r1_writes ||
 2661			rmd->data_length > ctrl_info->max_write_raid_1_10_3drive))
 2662			is_supported = false;
 2663		break;
 2664	case SA_RAID_5:
 2665		if (rmd->is_write && (!ctrl_info->enable_r5_writes ||
 2666			rmd->data_length > ctrl_info->max_write_raid_5_6))
 2667			is_supported = false;
 2668		break;
 2669	case SA_RAID_6:
 2670		if (rmd->is_write && (!ctrl_info->enable_r6_writes ||
 2671			rmd->data_length > ctrl_info->max_write_raid_5_6))
 2672			is_supported = false;
 2673		break;
 2674	default:
 2675		is_supported = false;
 2676		break;
 2677	}
 2678
 2679	return is_supported;
 2680}
 2681
 2682#define PQI_RAID_BYPASS_INELIGIBLE	1
 2683
 2684static int pqi_get_aio_lba_and_block_count(struct scsi_cmnd *scmd,
 2685	struct pqi_scsi_dev_raid_map_data *rmd)
 2686{
 2687	/* Check for valid opcode, get LBA and block count. */
 2688	switch (scmd->cmnd[0]) {
 2689	case WRITE_6:
 2690		rmd->is_write = true;
 2691		fallthrough;
 2692	case READ_6:
 2693		rmd->first_block = (u64)(((scmd->cmnd[1] & 0x1f) << 16) |
 2694			(scmd->cmnd[2] << 8) | scmd->cmnd[3]);
 2695		rmd->block_cnt = (u32)scmd->cmnd[4];
 2696		if (rmd->block_cnt == 0)
 2697			rmd->block_cnt = 256;
 2698		break;
 2699	case WRITE_10:
 2700		rmd->is_write = true;
 2701		fallthrough;
 2702	case READ_10:
 2703		rmd->first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
 2704		rmd->block_cnt = (u32)get_unaligned_be16(&scmd->cmnd[7]);
 2705		break;
 2706	case WRITE_12:
 2707		rmd->is_write = true;
 2708		fallthrough;
 2709	case READ_12:
 2710		rmd->first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
 2711		rmd->block_cnt = get_unaligned_be32(&scmd->cmnd[6]);
 2712		break;
 2713	case WRITE_16:
 2714		rmd->is_write = true;
 2715		fallthrough;
 2716	case READ_16:
 2717		rmd->first_block = get_unaligned_be64(&scmd->cmnd[2]);
 2718		rmd->block_cnt = get_unaligned_be32(&scmd->cmnd[10]);
 2719		break;
 2720	default:
 2721		/* Process via normal I/O path. */
 2722		return PQI_RAID_BYPASS_INELIGIBLE;
 2723	}
 2724
 2725	put_unaligned_le32(scsi_bufflen(scmd), &rmd->data_length);
 2726
 2727	return 0;
 2728}
 2729
 2730static int pci_get_aio_common_raid_map_values(struct pqi_ctrl_info *ctrl_info,
 2731	struct pqi_scsi_dev_raid_map_data *rmd, struct raid_map *raid_map)
 2732{
 2733#if BITS_PER_LONG == 32
 2734	u64 tmpdiv;
 2735#endif
 2736
 2737	rmd->last_block = rmd->first_block + rmd->block_cnt - 1;
 2738
 2739	/* Check for invalid block or wraparound. */
 2740	if (rmd->last_block >=
 2741		get_unaligned_le64(&raid_map->volume_blk_cnt) ||
 2742		rmd->last_block < rmd->first_block)
 2743		return PQI_RAID_BYPASS_INELIGIBLE;
 2744
 2745	rmd->data_disks_per_row =
 2746		get_unaligned_le16(&raid_map->data_disks_per_row);
 2747	rmd->strip_size = get_unaligned_le16(&raid_map->strip_size);
 2748	rmd->layout_map_count = get_unaligned_le16(&raid_map->layout_map_count);
 2749
 2750	/* Calculate stripe information for the request. */
 2751	rmd->blocks_per_row = rmd->data_disks_per_row * rmd->strip_size;
 2752	if (rmd->blocks_per_row == 0) /* Used as a divisor in many calculations */
 2753		return PQI_RAID_BYPASS_INELIGIBLE;
 2754#if BITS_PER_LONG == 32
 2755	tmpdiv = rmd->first_block;
 2756	do_div(tmpdiv, rmd->blocks_per_row);
 2757	rmd->first_row = tmpdiv;
 2758	tmpdiv = rmd->last_block;
 2759	do_div(tmpdiv, rmd->blocks_per_row);
 2760	rmd->last_row = tmpdiv;
 2761	rmd->first_row_offset = (u32)(rmd->first_block - (rmd->first_row * rmd->blocks_per_row));
 2762	rmd->last_row_offset = (u32)(rmd->last_block - (rmd->last_row * rmd->blocks_per_row));
 2763	tmpdiv = rmd->first_row_offset;
 2764	do_div(tmpdiv, rmd->strip_size);
 2765	rmd->first_column = tmpdiv;
 2766	tmpdiv = rmd->last_row_offset;
 2767	do_div(tmpdiv, rmd->strip_size);
 2768	rmd->last_column = tmpdiv;
 2769#else
 2770	rmd->first_row = rmd->first_block / rmd->blocks_per_row;
 2771	rmd->last_row = rmd->last_block / rmd->blocks_per_row;
 2772	rmd->first_row_offset = (u32)(rmd->first_block -
 2773		(rmd->first_row * rmd->blocks_per_row));
 2774	rmd->last_row_offset = (u32)(rmd->last_block - (rmd->last_row *
 2775		rmd->blocks_per_row));
 2776	rmd->first_column = rmd->first_row_offset / rmd->strip_size;
 2777	rmd->last_column = rmd->last_row_offset / rmd->strip_size;
 2778#endif
 2779
 2780	/* If this isn't a single row/column then give to the controller. */
 2781	if (rmd->first_row != rmd->last_row ||
 2782		rmd->first_column != rmd->last_column)
 2783		return PQI_RAID_BYPASS_INELIGIBLE;
 2784
 2785	/* Proceeding with driver mapping. */
 2786	rmd->total_disks_per_row = rmd->data_disks_per_row +
 2787		get_unaligned_le16(&raid_map->metadata_disks_per_row);
 2788	rmd->map_row = ((u32)(rmd->first_row >>
 2789		raid_map->parity_rotation_shift)) %
 2790		get_unaligned_le16(&raid_map->row_cnt);
 2791	rmd->map_index = (rmd->map_row * rmd->total_disks_per_row) +
 2792		rmd->first_column;
 2793
 2794	return 0;
 2795}
 2796
 2797static int pqi_calc_aio_r5_or_r6(struct pqi_scsi_dev_raid_map_data *rmd,
 2798	struct raid_map *raid_map)
 2799{
 2800#if BITS_PER_LONG == 32
 2801	u64 tmpdiv;
 2802#endif
 2803
 2804	if (rmd->blocks_per_row == 0) /* Used as a divisor in many calculations */
 2805		return PQI_RAID_BYPASS_INELIGIBLE;
 2806
 2807	/* RAID 50/60 */
 2808	/* Verify first and last block are in same RAID group. */
 2809	rmd->stripesize = rmd->blocks_per_row * rmd->layout_map_count;
 2810#if BITS_PER_LONG == 32
 2811	tmpdiv = rmd->first_block;
 2812	rmd->first_group = do_div(tmpdiv, rmd->stripesize);
 2813	tmpdiv = rmd->first_group;
 2814	do_div(tmpdiv, rmd->blocks_per_row);
 2815	rmd->first_group = tmpdiv;
 2816	tmpdiv = rmd->last_block;
 2817	rmd->last_group = do_div(tmpdiv, rmd->stripesize);
 2818	tmpdiv = rmd->last_group;
 2819	do_div(tmpdiv, rmd->blocks_per_row);
 2820	rmd->last_group = tmpdiv;
 2821#else
 2822	rmd->first_group = (rmd->first_block % rmd->stripesize) / rmd->blocks_per_row;
 2823	rmd->last_group = (rmd->last_block % rmd->stripesize) / rmd->blocks_per_row;
 2824#endif
 2825	if (rmd->first_group != rmd->last_group)
 2826		return PQI_RAID_BYPASS_INELIGIBLE;
 2827
 2828	/* Verify request is in a single row of RAID 5/6. */
 2829#if BITS_PER_LONG == 32
 2830	tmpdiv = rmd->first_block;
 2831	do_div(tmpdiv, rmd->stripesize);
 2832	rmd->first_row = tmpdiv;
 2833	rmd->r5or6_first_row = tmpdiv;
 2834	tmpdiv = rmd->last_block;
 2835	do_div(tmpdiv, rmd->stripesize);
 2836	rmd->r5or6_last_row = tmpdiv;
 2837#else
 2838	rmd->first_row = rmd->r5or6_first_row =
 2839		rmd->first_block / rmd->stripesize;
 2840	rmd->r5or6_last_row = rmd->last_block / rmd->stripesize;
 2841#endif
 2842	if (rmd->r5or6_first_row != rmd->r5or6_last_row)
 2843		return PQI_RAID_BYPASS_INELIGIBLE;
 2844
 2845	/* Verify request is in a single column. */
 2846#if BITS_PER_LONG == 32
 2847	tmpdiv = rmd->first_block;
 2848	rmd->first_row_offset = do_div(tmpdiv, rmd->stripesize);
 2849	tmpdiv = rmd->first_row_offset;
 2850	rmd->first_row_offset = (u32)do_div(tmpdiv, rmd->blocks_per_row);
 2851	rmd->r5or6_first_row_offset = rmd->first_row_offset;
 2852	tmpdiv = rmd->last_block;
 2853	rmd->r5or6_last_row_offset = do_div(tmpdiv, rmd->stripesize);
 2854	tmpdiv = rmd->r5or6_last_row_offset;
 2855	rmd->r5or6_last_row_offset = do_div(tmpdiv, rmd->blocks_per_row);
 2856	tmpdiv = rmd->r5or6_first_row_offset;
 2857	do_div(tmpdiv, rmd->strip_size);
 2858	rmd->first_column = rmd->r5or6_first_column = tmpdiv;
 2859	tmpdiv = rmd->r5or6_last_row_offset;
 2860	do_div(tmpdiv, rmd->strip_size);
 2861	rmd->r5or6_last_column = tmpdiv;
 2862#else
 2863	rmd->first_row_offset = rmd->r5or6_first_row_offset =
 2864		(u32)((rmd->first_block % rmd->stripesize) %
 2865		rmd->blocks_per_row);
 2866
 2867	rmd->r5or6_last_row_offset =
 2868		(u32)((rmd->last_block % rmd->stripesize) %
 2869		rmd->blocks_per_row);
 2870
 2871	rmd->first_column =
 2872		rmd->r5or6_first_row_offset / rmd->strip_size;
 2873	rmd->r5or6_first_column = rmd->first_column;
 2874	rmd->r5or6_last_column = rmd->r5or6_last_row_offset / rmd->strip_size;
 2875#endif
 2876	if (rmd->r5or6_first_column != rmd->r5or6_last_column)
 2877		return PQI_RAID_BYPASS_INELIGIBLE;
 2878
 2879	/* Request is eligible. */
 2880	rmd->map_row =
 2881		((u32)(rmd->first_row >> raid_map->parity_rotation_shift)) %
 2882		get_unaligned_le16(&raid_map->row_cnt);
 2883
 2884	rmd->map_index = (rmd->first_group *
 2885		(get_unaligned_le16(&raid_map->row_cnt) *
 2886		rmd->total_disks_per_row)) +
 2887		(rmd->map_row * rmd->total_disks_per_row) + rmd->first_column;
 2888
 2889	if (rmd->is_write) {
 2890		u32 index;
 2891
 2892		/*
 2893		 * p_parity_it_nexus and q_parity_it_nexus are pointers to the
 2894		 * parity entries inside the device's raid_map.
 2895		 *
 2896		 * A device's RAID map is bounded by: number of RAID disks squared.
 2897		 *
 2898		 * The devices RAID map size is checked during device
 2899		 * initialization.
 2900		 */
 2901		index = DIV_ROUND_UP(rmd->map_index + 1, rmd->total_disks_per_row);
 2902		index *= rmd->total_disks_per_row;
 2903		index -= get_unaligned_le16(&raid_map->metadata_disks_per_row);
 2904
 2905		rmd->p_parity_it_nexus = raid_map->disk_data[index].aio_handle;
 2906		if (rmd->raid_level == SA_RAID_6) {
 2907			rmd->q_parity_it_nexus = raid_map->disk_data[index + 1].aio_handle;
 2908			rmd->xor_mult = raid_map->disk_data[rmd->map_index].xor_mult[1];
 2909		}
 2910#if BITS_PER_LONG == 32
 2911		tmpdiv = rmd->first_block;
 2912		do_div(tmpdiv, rmd->blocks_per_row);
 2913		rmd->row = tmpdiv;
 2914#else
 2915		rmd->row = rmd->first_block / rmd->blocks_per_row;
 2916#endif
 2917	}
 2918
 2919	return 0;
 2920}
 2921
 2922static void pqi_set_aio_cdb(struct pqi_scsi_dev_raid_map_data *rmd)
 2923{
 2924	/* Build the new CDB for the physical disk I/O. */
 2925	if (rmd->disk_block > 0xffffffff) {
 2926		rmd->cdb[0] = rmd->is_write ? WRITE_16 : READ_16;
 2927		rmd->cdb[1] = 0;
 2928		put_unaligned_be64(rmd->disk_block, &rmd->cdb[2]);
 2929		put_unaligned_be32(rmd->disk_block_cnt, &rmd->cdb[10]);
 2930		rmd->cdb[14] = 0;
 2931		rmd->cdb[15] = 0;
 2932		rmd->cdb_length = 16;
 2933	} else {
 2934		rmd->cdb[0] = rmd->is_write ? WRITE_10 : READ_10;
 2935		rmd->cdb[1] = 0;
 2936		put_unaligned_be32((u32)rmd->disk_block, &rmd->cdb[2]);
 2937		rmd->cdb[6] = 0;
 2938		put_unaligned_be16((u16)rmd->disk_block_cnt, &rmd->cdb[7]);
 2939		rmd->cdb[9] = 0;
 2940		rmd->cdb_length = 10;
 2941	}
 2942}
 2943
 2944static void pqi_calc_aio_r1_nexus(struct raid_map *raid_map,
 2945	struct pqi_scsi_dev_raid_map_data *rmd)
 2946{
 2947	u32 index;
 2948	u32 group;
 2949
 2950	group = rmd->map_index / rmd->data_disks_per_row;
 2951
 2952	index = rmd->map_index - (group * rmd->data_disks_per_row);
 2953	rmd->it_nexus[0] = raid_map->disk_data[index].aio_handle;
 2954	index += rmd->data_disks_per_row;
 2955	rmd->it_nexus[1] = raid_map->disk_data[index].aio_handle;
 2956	if (rmd->layout_map_count > 2) {
 2957		index += rmd->data_disks_per_row;
 2958		rmd->it_nexus[2] = raid_map->disk_data[index].aio_handle;
 2959	}
 2960
 2961	rmd->num_it_nexus_entries = rmd->layout_map_count;
 2962}
 2963
 2964static int pqi_raid_bypass_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
 2965	struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
 2966	struct pqi_queue_group *queue_group)
 2967{
 2968	int rc;
 2969	struct raid_map *raid_map;
 2970	u32 group;
 2971	u32 next_bypass_group;
 2972	struct pqi_encryption_info *encryption_info_ptr;
 2973	struct pqi_encryption_info encryption_info;
 2974	struct pqi_scsi_dev_raid_map_data rmd = { 0 };
 2975
 2976	rc = pqi_get_aio_lba_and_block_count(scmd, &rmd);
 2977	if (rc)
 2978		return PQI_RAID_BYPASS_INELIGIBLE;
 2979
 2980	rmd.raid_level = device->raid_level;
 2981
 2982	if (!pqi_aio_raid_level_supported(ctrl_info, &rmd))
 2983		return PQI_RAID_BYPASS_INELIGIBLE;
 2984
 2985	if (unlikely(rmd.block_cnt == 0))
 2986		return PQI_RAID_BYPASS_INELIGIBLE;
 2987
 2988	raid_map = device->raid_map;
 2989
 2990	rc = pci_get_aio_common_raid_map_values(ctrl_info, &rmd, raid_map);
 2991	if (rc)
 2992		return PQI_RAID_BYPASS_INELIGIBLE;
 2993
 2994	if (device->raid_level == SA_RAID_1 ||
 2995		device->raid_level == SA_RAID_TRIPLE) {
 2996		if (rmd.is_write) {
 2997			pqi_calc_aio_r1_nexus(raid_map, &rmd);
 2998		} else {
 2999			group = device->next_bypass_group[rmd.map_index];
 3000			next_bypass_group = group + 1;
 3001			if (next_bypass_group >= rmd.layout_map_count)
 3002				next_bypass_group = 0;
 3003			device->next_bypass_group[rmd.map_index] = next_bypass_group;
 3004			rmd.map_index += group * rmd.data_disks_per_row;
 3005		}
 3006	} else if ((device->raid_level == SA_RAID_5 ||
 3007		device->raid_level == SA_RAID_6) &&
 3008		(rmd.layout_map_count > 1 || rmd.is_write)) {
 3009		rc = pqi_calc_aio_r5_or_r6(&rmd, raid_map);
 3010		if (rc)
 3011			return PQI_RAID_BYPASS_INELIGIBLE;
 3012	}
 3013
 3014	if (unlikely(rmd.map_index >= RAID_MAP_MAX_ENTRIES))
 3015		return PQI_RAID_BYPASS_INELIGIBLE;
 3016
 3017	rmd.aio_handle = raid_map->disk_data[rmd.map_index].aio_handle;
 3018	rmd.disk_block = get_unaligned_le64(&raid_map->disk_starting_blk) +
 3019		rmd.first_row * rmd.strip_size +
 3020		(rmd.first_row_offset - rmd.first_column * rmd.strip_size);
 3021	rmd.disk_block_cnt = rmd.block_cnt;
 3022
 3023	/* Handle differing logical/physical block sizes. */
 3024	if (raid_map->phys_blk_shift) {
 3025		rmd.disk_block <<= raid_map->phys_blk_shift;
 3026		rmd.disk_block_cnt <<= raid_map->phys_blk_shift;
 3027	}
 3028
 3029	if (unlikely(rmd.disk_block_cnt > 0xffff))
 3030		return PQI_RAID_BYPASS_INELIGIBLE;
 3031
 3032	pqi_set_aio_cdb(&rmd);
 3033
 3034	if (get_unaligned_le16(&raid_map->flags) & RAID_MAP_ENCRYPTION_ENABLED) {
 3035		if (rmd.data_length > device->max_transfer_encrypted)
 3036			return PQI_RAID_BYPASS_INELIGIBLE;
 3037		pqi_set_encryption_info(&encryption_info, raid_map, rmd.first_block);
 3038		encryption_info_ptr = &encryption_info;
 3039	} else {
 3040		encryption_info_ptr = NULL;
 3041	}
 3042
 3043	if (rmd.is_write) {
 3044		switch (device->raid_level) {
 3045		case SA_RAID_1:
 3046		case SA_RAID_TRIPLE:
 3047			return pqi_aio_submit_r1_write_io(ctrl_info, scmd, queue_group,
 3048				encryption_info_ptr, device, &rmd);
 3049		case SA_RAID_5:
 3050		case SA_RAID_6:
 3051			return pqi_aio_submit_r56_write_io(ctrl_info, scmd, queue_group,
 3052				encryption_info_ptr, device, &rmd);
 3053		}
 3054	}
 3055
 3056	return pqi_aio_submit_io(ctrl_info, scmd, rmd.aio_handle,
 3057		rmd.cdb, rmd.cdb_length, queue_group,
 3058		encryption_info_ptr, true, false);
 3059}
 3060
 3061#define PQI_STATUS_IDLE		0x0
 3062
 3063#define PQI_CREATE_ADMIN_QUEUE_PAIR	1
 3064#define PQI_DELETE_ADMIN_QUEUE_PAIR	2
 3065
 3066#define PQI_DEVICE_STATE_POWER_ON_AND_RESET		0x0
 3067#define PQI_DEVICE_STATE_STATUS_AVAILABLE		0x1
 3068#define PQI_DEVICE_STATE_ALL_REGISTERS_READY		0x2
 3069#define PQI_DEVICE_STATE_ADMIN_QUEUE_PAIR_READY		0x3
 3070#define PQI_DEVICE_STATE_ERROR				0x4
 3071
 3072#define PQI_MODE_READY_TIMEOUT_SECS		30
 3073#define PQI_MODE_READY_POLL_INTERVAL_MSECS	1
 3074
 3075static int pqi_wait_for_pqi_mode_ready(struct pqi_ctrl_info *ctrl_info)
 3076{
 3077	struct pqi_device_registers __iomem *pqi_registers;
 3078	unsigned long timeout;
 3079	u64 signature;
 3080	u8 status;
 3081
 3082	pqi_registers = ctrl_info->pqi_registers;
 3083	timeout = (PQI_MODE_READY_TIMEOUT_SECS * HZ) + jiffies;
 3084
 3085	while (1) {
 3086		signature = readq(&pqi_registers->signature);
 3087		if (memcmp(&signature, PQI_DEVICE_SIGNATURE,
 3088			sizeof(signature)) == 0)
 3089			break;
 3090		if (time_after(jiffies, timeout)) {
 3091			dev_err(&ctrl_info->pci_dev->dev,
 3092				"timed out waiting for PQI signature\n");
 3093			return -ETIMEDOUT;
 3094		}
 3095		msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
 3096	}
 3097
 3098	while (1) {
 3099		status = readb(&pqi_registers->function_and_status_code);
 3100		if (status == PQI_STATUS_IDLE)
 3101			break;
 3102		if (time_after(jiffies, timeout)) {
 3103			dev_err(&ctrl_info->pci_dev->dev,
 3104				"timed out waiting for PQI IDLE\n");
 3105			return -ETIMEDOUT;
 3106		}
 3107		msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
 3108	}
 3109
 3110	while (1) {
 3111		if (readl(&pqi_registers->device_status) ==
 3112			PQI_DEVICE_STATE_ALL_REGISTERS_READY)
 3113			break;
 3114		if (time_after(jiffies, timeout)) {
 3115			dev_err(&ctrl_info->pci_dev->dev,
 3116				"timed out waiting for PQI all registers ready\n");
 3117			return -ETIMEDOUT;
 3118		}
 3119		msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
 3120	}
 3121
 3122	return 0;
 3123}
 3124
 3125static inline void pqi_aio_path_disabled(struct pqi_io_request *io_request)
 3126{
 3127	struct pqi_scsi_dev *device;
 3128
 3129	device = io_request->scmd->device->hostdata;
 3130	device->raid_bypass_enabled = false;
 3131	device->aio_enabled = false;
 3132}
 3133
 3134static inline void pqi_take_device_offline(struct scsi_device *sdev, char *path)
 3135{
 3136	struct pqi_ctrl_info *ctrl_info;
 3137	struct pqi_scsi_dev *device;
 3138
 3139	device = sdev->hostdata;
 3140	if (device->device_offline)
 3141		return;
 3142
 3143	device->device_offline = true;
 3144	ctrl_info = shost_to_hba(sdev->host);
 3145	pqi_schedule_rescan_worker(ctrl_info);
 3146	dev_err(&ctrl_info->pci_dev->dev, "re-scanning %s scsi %d:%d:%d:%d\n",
 3147		path, ctrl_info->scsi_host->host_no, device->bus,
 3148		device->target, device->lun);
 3149}
 3150
 3151static void pqi_process_raid_io_error(struct pqi_io_request *io_request)
 3152{
 3153	u8 scsi_status;
 3154	u8 host_byte;
 3155	struct scsi_cmnd *scmd;
 3156	struct pqi_raid_error_info *error_info;
 3157	size_t sense_data_length;
 3158	int residual_count;
 3159	int xfer_count;
 3160	struct scsi_sense_hdr sshdr;
 3161
 3162	scmd = io_request->scmd;
 3163	if (!scmd)
 3164		return;
 3165
 3166	error_info = io_request->error_info;
 3167	scsi_status = error_info->status;
 3168	host_byte = DID_OK;
 3169
 3170	switch (error_info->data_out_result) {
 3171	case PQI_DATA_IN_OUT_GOOD:
 3172		break;
 3173	case PQI_DATA_IN_OUT_UNDERFLOW:
 3174		xfer_count =
 3175			get_unaligned_le32(&error_info->data_out_transferred);
 3176		residual_count = scsi_bufflen(scmd) - xfer_count;
 3177		scsi_set_resid(scmd, residual_count);
 3178		if (xfer_count < scmd->underflow)
 3179			host_byte = DID_SOFT_ERROR;
 3180		break;
 3181	case PQI_DATA_IN_OUT_UNSOLICITED_ABORT:
 3182	case PQI_DATA_IN_OUT_ABORTED:
 3183		host_byte = DID_ABORT;
 3184		break;
 3185	case PQI_DATA_IN_OUT_TIMEOUT:
 3186		host_byte = DID_TIME_OUT;
 3187		break;
 3188	case PQI_DATA_IN_OUT_BUFFER_OVERFLOW:
 3189	case PQI_DATA_IN_OUT_PROTOCOL_ERROR:
 3190	case PQI_DATA_IN_OUT_BUFFER_ERROR:
 3191	case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA:
 3192	case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE:
 3193	case PQI_DATA_IN_OUT_ERROR:
 3194	case PQI_DATA_IN_OUT_HARDWARE_ERROR:
 3195	case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR:
 3196	case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT:
 3197	case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED:
 3198	case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED:
 3199	case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED:
 3200	case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST:
 3201	case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION:
 3202	case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED:
 3203	case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ:
 3204	default:
 3205		host_byte = DID_ERROR;
 3206		break;
 3207	}
 3208
 3209	sense_data_length = get_unaligned_le16(&error_info->sense_data_length);
 3210	if (sense_data_length == 0)
 3211		sense_data_length =
 3212			get_unaligned_le16(&error_info->response_data_length);
 3213	if (sense_data_length) {
 3214		if (sense_data_length > sizeof(error_info->data))
 3215			sense_data_length = sizeof(error_info->data);
 3216
 3217		if (scsi_status == SAM_STAT_CHECK_CONDITION &&
 3218			scsi_normalize_sense(error_info->data,
 3219				sense_data_length, &sshdr) &&
 3220				sshdr.sense_key == HARDWARE_ERROR &&
 3221				sshdr.asc == 0x3e) {
 3222			struct pqi_ctrl_info *ctrl_info = shost_to_hba(scmd->device->host);
 3223			struct pqi_scsi_dev *device = scmd->device->hostdata;
 3224
 3225			switch (sshdr.ascq) {
 3226			case 0x1: /* LOGICAL UNIT FAILURE */
 3227				if (printk_ratelimit())
 3228					scmd_printk(KERN_ERR, scmd, "received 'logical unit failure' from controller for scsi %d:%d:%d:%d\n",
 3229						ctrl_info->scsi_host->host_no, device->bus, device->target, device->lun);
 3230				pqi_take_device_offline(scmd->device, "RAID");
 3231				host_byte = DID_NO_CONNECT;
 3232				break;
 3233
 3234			default: /* See http://www.t10.org/lists/asc-num.htm#ASC_3E */
 3235				if (printk_ratelimit())
 3236					scmd_printk(KERN_ERR, scmd, "received unhandled error %d from controller for scsi %d:%d:%d:%d\n",
 3237						sshdr.ascq, ctrl_info->scsi_host->host_no, device->bus, device->target, device->lun);
 3238				break;
 3239			}
 3240		}
 3241
 3242		if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
 3243			sense_data_length = SCSI_SENSE_BUFFERSIZE;
 3244		memcpy(scmd->sense_buffer, error_info->data,
 3245			sense_data_length);
 3246	}
 3247
 3248	scmd->result = scsi_status;
 3249	set_host_byte(scmd, host_byte);
 3250}
 3251
 3252static void pqi_process_aio_io_error(struct pqi_io_request *io_request)
 3253{
 3254	u8 scsi_status;
 3255	u8 host_byte;
 3256	struct scsi_cmnd *scmd;
 3257	struct pqi_aio_error_info *error_info;
 3258	size_t sense_data_length;
 3259	int residual_count;
 3260	int xfer_count;
 3261	bool device_offline;
 3262	struct pqi_scsi_dev *device;
 3263
 3264	scmd = io_request->scmd;
 3265	error_info = io_request->error_info;
 3266	host_byte = DID_OK;
 3267	sense_data_length = 0;
 3268	device_offline = false;
 3269	device = scmd->device->hostdata;
 3270
 3271	switch (error_info->service_response) {
 3272	case PQI_AIO_SERV_RESPONSE_COMPLETE:
 3273		scsi_status = error_info->status;
 3274		break;
 3275	case PQI_AIO_SERV_RESPONSE_FAILURE:
 3276		switch (error_info->status) {
 3277		case PQI_AIO_STATUS_IO_ABORTED:
 3278			scsi_status = SAM_STAT_TASK_ABORTED;
 3279			break;
 3280		case PQI_AIO_STATUS_UNDERRUN:
 3281			scsi_status = SAM_STAT_GOOD;
 3282			residual_count = get_unaligned_le32(
 3283						&error_info->residual_count);
 3284			scsi_set_resid(scmd, residual_count);
 3285			xfer_count = scsi_bufflen(scmd) - residual_count;
 3286			if (xfer_count < scmd->underflow)
 3287				host_byte = DID_SOFT_ERROR;
 3288			break;
 3289		case PQI_AIO_STATUS_OVERRUN:
 3290			scsi_status = SAM_STAT_GOOD;
 3291			break;
 3292		case PQI_AIO_STATUS_AIO_PATH_DISABLED:
 3293			pqi_aio_path_disabled(io_request);
 3294			if (pqi_is_multipath_device(device)) {
 3295				pqi_device_remove_start(device);
 3296				host_byte = DID_NO_CONNECT;
 3297				scsi_status = SAM_STAT_CHECK_CONDITION;
 3298			} else {
 3299				scsi_status = SAM_STAT_GOOD;
 3300				io_request->status = -EAGAIN;
 3301			}
 3302			break;
 3303		case PQI_AIO_STATUS_NO_PATH_TO_DEVICE:
 3304		case PQI_AIO_STATUS_INVALID_DEVICE:
 3305			if (!io_request->raid_bypass) {
 3306				device_offline = true;
 3307				pqi_take_device_offline(scmd->device, "AIO");
 3308				host_byte = DID_NO_CONNECT;
 3309			}
 3310			scsi_status = SAM_STAT_CHECK_CONDITION;
 3311			break;
 3312		case PQI_AIO_STATUS_IO_ERROR:
 3313		default:
 3314			scsi_status = SAM_STAT_CHECK_CONDITION;
 3315			break;
 3316		}
 3317		break;
 3318	case PQI_AIO_SERV_RESPONSE_TMF_COMPLETE:
 3319	case PQI_AIO_SERV_RESPONSE_TMF_SUCCEEDED:
 3320		scsi_status = SAM_STAT_GOOD;
 3321		break;
 3322	case PQI_AIO_SERV_RESPONSE_TMF_REJECTED:
 3323	case PQI_AIO_SERV_RESPONSE_TMF_INCORRECT_LUN:
 3324	default:
 3325		scsi_status = SAM_STAT_CHECK_CONDITION;
 3326		break;
 3327	}
 3328
 3329	if (error_info->data_present) {
 3330		sense_data_length =
 3331			get_unaligned_le16(&error_info->data_length);
 3332		if (sense_data_length) {
 3333			if (sense_data_length > sizeof(error_info->data))
 3334				sense_data_length = sizeof(error_info->data);
 3335			if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
 3336				sense_data_length = SCSI_SENSE_BUFFERSIZE;
 3337			memcpy(scmd->sense_buffer, error_info->data,
 3338				sense_data_length);
 3339		}
 3340	}
 3341
 3342	if (device_offline && sense_data_length == 0)
 3343		scsi_build_sense(scmd, 0, HARDWARE_ERROR, 0x3e, 0x1);
 3344
 3345	scmd->result = scsi_status;
 3346	set_host_byte(scmd, host_byte);
 3347}
 3348
 3349static void pqi_process_io_error(unsigned int iu_type,
 3350	struct pqi_io_request *io_request)
 3351{
 3352	switch (iu_type) {
 3353	case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
 3354		pqi_process_raid_io_error(io_request);
 3355		break;
 3356	case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
 3357		pqi_process_aio_io_error(io_request);
 3358		break;
 3359	}
 3360}
 3361
 3362static int pqi_interpret_task_management_response(struct pqi_ctrl_info *ctrl_info,
 3363	struct pqi_task_management_response *response)
 3364{
 3365	int rc;
 3366
 3367	switch (response->response_code) {
 3368	case SOP_TMF_COMPLETE:
 3369	case SOP_TMF_FUNCTION_SUCCEEDED:
 3370		rc = 0;
 3371		break;
 3372	case SOP_TMF_REJECTED:
 3373		rc = -EAGAIN;
 3374		break;
 3375	case SOP_TMF_INCORRECT_LOGICAL_UNIT:
 3376		rc = -ENODEV;
 3377		break;
 3378	default:
 3379		rc = -EIO;
 3380		break;
 3381	}
 3382
 3383	if (rc)
 3384		dev_err(&ctrl_info->pci_dev->dev,
 3385			"Task Management Function error: %d (response code: %u)\n", rc, response->response_code);
 3386
 3387	return rc;
 3388}
 3389
 3390static inline void pqi_invalid_response(struct pqi_ctrl_info *ctrl_info,
 3391	enum pqi_ctrl_shutdown_reason ctrl_shutdown_reason)
 3392{
 3393	pqi_take_ctrl_offline(ctrl_info, ctrl_shutdown_reason);
 3394}
 3395
 3396static int pqi_process_io_intr(struct pqi_ctrl_info *ctrl_info, struct pqi_queue_group *queue_group)
 3397{
 3398	int num_responses;
 3399	pqi_index_t oq_pi;
 3400	pqi_index_t oq_ci;
 3401	struct pqi_io_request *io_request;
 3402	struct pqi_io_response *response;
 3403	u16 request_id;
 3404
 3405	num_responses = 0;
 3406	oq_ci = queue_group->oq_ci_copy;
 3407
 3408	while (1) {
 3409		oq_pi = readl(queue_group->oq_pi);
 3410		if (oq_pi >= ctrl_info->num_elements_per_oq) {
 3411			pqi_invalid_response(ctrl_info, PQI_IO_PI_OUT_OF_RANGE);
 3412			dev_err(&ctrl_info->pci_dev->dev,
 3413				"I/O interrupt: producer index (%u) out of range (0-%u): consumer index: %u\n",
 3414				oq_pi, ctrl_info->num_elements_per_oq - 1, oq_ci);
 3415			return -1;
 3416		}
 3417		if (oq_pi == oq_ci)
 3418			break;
 3419
 3420		num_responses++;
 3421		response = queue_group->oq_element_array +
 3422			(oq_ci * PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
 3423
 3424		request_id = get_unaligned_le16(&response->request_id);
 3425		if (request_id >= ctrl_info->max_io_slots) {
 3426			pqi_invalid_response(ctrl_info, PQI_INVALID_REQ_ID);
 3427			dev_err(&ctrl_info->pci_dev->dev,
 3428				"request ID in response (%u) out of range (0-%u): producer index: %u  consumer index: %u\n",
 3429				request_id, ctrl_info->max_io_slots - 1, oq_pi, oq_ci);
 3430			return -1;
 3431		}
 3432
 3433		io_request = &ctrl_info->io_request_pool[request_id];
 3434		if (atomic_read(&io_request->refcount) == 0) {
 3435			pqi_invalid_response(ctrl_info, PQI_UNMATCHED_REQ_ID);
 3436			dev_err(&ctrl_info->pci_dev->dev,
 3437				"request ID in response (%u) does not match an outstanding I/O request: producer index: %u  consumer index: %u\n",
 3438				request_id, oq_pi, oq_ci);
 3439			return -1;
 3440		}
 3441
 3442		switch (response->header.iu_type) {
 3443		case PQI_RESPONSE_IU_RAID_PATH_IO_SUCCESS:
 3444		case PQI_RESPONSE_IU_AIO_PATH_IO_SUCCESS:
 3445			if (io_request->scmd)
 3446				io_request->scmd->result = 0;
 3447			fallthrough;
 3448		case PQI_RESPONSE_IU_GENERAL_MANAGEMENT:
 3449			break;
 3450		case PQI_RESPONSE_IU_VENDOR_GENERAL:
 3451			io_request->status =
 3452				get_unaligned_le16(
 3453				&((struct pqi_vendor_general_response *)response)->status);
 3454			break;
 3455		case PQI_RESPONSE_IU_TASK_MANAGEMENT:
 3456			io_request->status = pqi_interpret_task_management_response(ctrl_info,
 3457				(void *)response);
 3458			break;
 3459		case PQI_RESPONSE_IU_AIO_PATH_DISABLED:
 3460			pqi_aio_path_disabled(io_request);
 3461			io_request->status = -EAGAIN;
 3462			break;
 3463		case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
 3464		case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
 3465			io_request->error_info = ctrl_info->error_buffer +
 3466				(get_unaligned_le16(&response->error_index) *
 3467				PQI_ERROR_BUFFER_ELEMENT_LENGTH);
 3468			pqi_process_io_error(response->header.iu_type, io_request);
 3469			break;
 3470		default:
 3471			pqi_invalid_response(ctrl_info, PQI_UNEXPECTED_IU_TYPE);
 3472			dev_err(&ctrl_info->pci_dev->dev,
 3473				"unexpected IU type: 0x%x: producer index: %u  consumer index: %u\n",
 3474				response->header.iu_type, oq_pi, oq_ci);
 3475			return -1;
 3476		}
 3477
 3478		io_request->io_complete_callback(io_request, io_request->context);
 3479
 3480		/*
 3481		 * Note that the I/O request structure CANNOT BE TOUCHED after
 3482		 * returning from the I/O completion callback!
 3483		 */
 3484		oq_ci = (oq_ci + 1) % ctrl_info->num_elements_per_oq;
 3485	}
 3486
 3487	if (num_responses) {
 3488		queue_group->oq_ci_copy = oq_ci;
 3489		writel(oq_ci, queue_group->oq_ci);
 3490	}
 3491
 3492	return num_responses;
 3493}
 3494
 3495static inline unsigned int pqi_num_elements_free(unsigned int pi,
 3496	unsigned int ci, unsigned int elements_in_queue)
 3497{
 3498	unsigned int num_elements_used;
 3499
 3500	if (pi >= ci)
 3501		num_elements_used = pi - ci;
 3502	else
 3503		num_elements_used = elements_in_queue - ci + pi;
 3504
 3505	return elements_in_queue - num_elements_used - 1;
 3506}
 3507
 3508static void pqi_send_event_ack(struct pqi_ctrl_info *ctrl_info,
 3509	struct pqi_event_acknowledge_request *iu, size_t iu_length)
 3510{
 3511	pqi_index_t iq_pi;
 3512	pqi_index_t iq_ci;
 3513	unsigned long flags;
 3514	void *next_element;
 3515	struct pqi_queue_group *queue_group;
 3516
 3517	queue_group = &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP];
 3518	put_unaligned_le16(queue_group->oq_id, &iu->header.response_queue_id);
 3519
 3520	while (1) {
 3521		spin_lock_irqsave(&queue_group->submit_lock[RAID_PATH], flags);
 3522
 3523		iq_pi = queue_group->iq_pi_copy[RAID_PATH];
 3524		iq_ci = readl(queue_group->iq_ci[RAID_PATH]);
 3525
 3526		if (pqi_num_elements_free(iq_pi, iq_ci,
 3527			ctrl_info->num_elements_per_iq))
 3528			break;
 3529
 3530		spin_unlock_irqrestore(
 3531			&queue_group->submit_lock[RAID_PATH], flags);
 3532
 3533		if (pqi_ctrl_offline(ctrl_info))
 3534			return;
 3535	}
 3536
 3537	next_element = queue_group->iq_element_array[RAID_PATH] +
 3538		(iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
 3539
 3540	memcpy(next_element, iu, iu_length);
 3541
 3542	iq_pi = (iq_pi + 1) % ctrl_info->num_elements_per_iq;
 3543	queue_group->iq_pi_copy[RAID_PATH] = iq_pi;
 3544
 3545	/*
 3546	 * This write notifies the controller that an IU is available to be
 3547	 * processed.
 3548	 */
 3549	writel(iq_pi, queue_group->iq_pi[RAID_PATH]);
 3550
 3551	spin_unlock_irqrestore(&queue_group->submit_lock[RAID_PATH], flags);
 3552}
 3553
 3554static void pqi_acknowledge_event(struct pqi_ctrl_info *ctrl_info,
 3555	struct pqi_event *event)
 3556{
 3557	struct pqi_event_acknowledge_request request;
 3558
 3559	memset(&request, 0, sizeof(request));
 3560
 3561	request.header.iu_type = PQI_REQUEST_IU_ACKNOWLEDGE_VENDOR_EVENT;
 3562	put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
 3563		&request.header.iu_length);
 3564	request.event_type = event->event_type;
 3565	put_unaligned_le16(event->event_id, &request.event_id);
 3566	put_unaligned_le32(event->additional_event_id, &request.additional_event_id);
 3567
 3568	pqi_send_event_ack(ctrl_info, &request, sizeof(request));
 3569}
 3570
 3571#define PQI_SOFT_RESET_STATUS_TIMEOUT_SECS		30
 3572#define PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS	1
 3573
 3574static enum pqi_soft_reset_status pqi_poll_for_soft_reset_status(
 3575	struct pqi_ctrl_info *ctrl_info)
 3576{
 3577	u8 status;
 3578	unsigned long timeout;
 3579
 3580	timeout = (PQI_SOFT_RESET_STATUS_TIMEOUT_SECS * HZ) + jiffies;
 3581
 3582	while (1) {
 3583		status = pqi_read_soft_reset_status(ctrl_info);
 3584		if (status & PQI_SOFT_RESET_INITIATE)
 3585			return RESET_INITIATE_DRIVER;
 3586
 3587		if (status & PQI_SOFT_RESET_ABORT)
 3588			return RESET_ABORT;
 3589
 3590		if (!sis_is_firmware_running(ctrl_info))
 3591			return RESET_NORESPONSE;
 3592
 3593		if (time_after(jiffies, timeout)) {
 3594			dev_warn(&ctrl_info->pci_dev->dev,
 3595				"timed out waiting for soft reset status\n");
 3596			return RESET_TIMEDOUT;
 3597		}
 3598
 3599		ssleep(PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS);
 3600	}
 3601}
 3602
 3603static void pqi_process_soft_reset(struct pqi_ctrl_info *ctrl_info)
 3604{
 3605	int rc;
 3606	unsigned int delay_secs;
 3607	enum pqi_soft_reset_status reset_status;
 3608
 3609	if (ctrl_info->soft_reset_handshake_supported)
 3610		reset_status = pqi_poll_for_soft_reset_status(ctrl_info);
 3611	else
 3612		reset_status = RESET_INITIATE_FIRMWARE;
 3613
 3614	delay_secs = PQI_POST_RESET_DELAY_SECS;
 3615
 3616	switch (reset_status) {
 3617	case RESET_TIMEDOUT:
 3618		delay_secs = PQI_POST_OFA_RESET_DELAY_UPON_TIMEOUT_SECS;
 3619		fallthrough;
 3620	case RESET_INITIATE_DRIVER:
 3621		dev_info(&ctrl_info->pci_dev->dev,
 3622				"Online Firmware Activation: resetting controller\n");
 3623		sis_soft_reset(ctrl_info);
 3624		fallthrough;
 3625	case RESET_INITIATE_FIRMWARE:
 3626		ctrl_info->pqi_mode_enabled = false;
 3627		pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
 3628		rc = pqi_ofa_ctrl_restart(ctrl_info, delay_secs);
 3629		pqi_ofa_free_host_buffer(ctrl_info);
 3630		pqi_ctrl_ofa_done(ctrl_info);
 3631		dev_info(&ctrl_info->pci_dev->dev,
 3632				"Online Firmware Activation: %s\n",
 3633				rc == 0 ? "SUCCESS" : "FAILED");
 3634		break;
 3635	case RESET_ABORT:
 3636		dev_info(&ctrl_info->pci_dev->dev,
 3637				"Online Firmware Activation ABORTED\n");
 3638		if (ctrl_info->soft_reset_handshake_supported)
 3639			pqi_clear_soft_reset_status(ctrl_info);
 3640		pqi_ofa_free_host_buffer(ctrl_info);
 3641		pqi_ctrl_ofa_done(ctrl_info);
 3642		pqi_ofa_ctrl_unquiesce(ctrl_info);
 3643		break;
 3644	case RESET_NORESPONSE:
 3645		fallthrough;
 3646	default:
 3647		dev_err(&ctrl_info->pci_dev->dev,
 3648			"unexpected Online Firmware Activation reset status: 0x%x\n",
 3649			reset_status);
 3650		pqi_ofa_free_host_buffer(ctrl_info);
 3651		pqi_ctrl_ofa_done(ctrl_info);
 3652		pqi_ofa_ctrl_unquiesce(ctrl_info);
 3653		pqi_take_ctrl_offline(ctrl_info, PQI_OFA_RESPONSE_TIMEOUT);
 3654		break;
 3655	}
 3656}
 3657
 3658static void pqi_ofa_memory_alloc_worker(struct work_struct *work)
 3659{
 3660	struct pqi_ctrl_info *ctrl_info;
 3661
 3662	ctrl_info = container_of(work, struct pqi_ctrl_info, ofa_memory_alloc_work);
 3663
 3664	pqi_ctrl_ofa_start(ctrl_info);
 3665	pqi_ofa_setup_host_buffer(ctrl_info);
 3666	pqi_ofa_host_memory_update(ctrl_info);
 3667}
 3668
 3669static void pqi_ofa_quiesce_worker(struct work_struct *work)
 3670{
 3671	struct pqi_ctrl_info *ctrl_info;
 3672	struct pqi_event *event;
 3673
 3674	ctrl_info = container_of(work, struct pqi_ctrl_info, ofa_quiesce_work);
 3675
 3676	event = &ctrl_info->events[pqi_event_type_to_event_index(PQI_EVENT_TYPE_OFA)];
 3677
 3678	pqi_ofa_ctrl_quiesce(ctrl_info);
 3679	pqi_acknowledge_event(ctrl_info, event);
 3680	pqi_process_soft_reset(ctrl_info);
 3681}
 3682
 3683static bool pqi_ofa_process_event(struct pqi_ctrl_info *ctrl_info,
 3684	struct pqi_event *event)
 3685{
 3686	bool ack_event;
 3687
 3688	ack_event = true;
 3689
 3690	switch (event->event_id) {
 3691	case PQI_EVENT_OFA_MEMORY_ALLOCATION:
 3692		dev_info(&ctrl_info->pci_dev->dev,
 3693			"received Online Firmware Activation memory allocation request\n");
 3694		schedule_work(&ctrl_info->ofa_memory_alloc_work);
 3695		break;
 3696	case PQI_EVENT_OFA_QUIESCE:
 3697		dev_info(&ctrl_info->pci_dev->dev,
 3698			"received Online Firmware Activation quiesce request\n");
 3699		schedule_work(&ctrl_info->ofa_quiesce_work);
 3700		ack_event = false;
 3701		break;
 3702	case PQI_EVENT_OFA_CANCELED:
 3703		dev_info(&ctrl_info->pci_dev->dev,
 3704			"received Online Firmware Activation cancel request: reason: %u\n",
 3705			ctrl_info->ofa_cancel_reason);
 3706		pqi_ofa_free_host_buffer(ctrl_info);
 3707		pqi_ctrl_ofa_done(ctrl_info);
 3708		break;
 3709	default:
 3710		dev_err(&ctrl_info->pci_dev->dev,
 3711			"received unknown Online Firmware Activation request: event ID: %u\n",
 3712			event->event_id);
 3713		break;
 3714	}
 3715
 3716	return ack_event;
 3717}
 3718
 3719static void pqi_mark_volumes_for_rescan(struct pqi_ctrl_info *ctrl_info)
 3720{
 3721	unsigned long flags;
 3722	struct pqi_scsi_dev *device;
 3723
 3724	spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
 3725
 3726	list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry) {
 3727		if (pqi_is_logical_device(device) && device->devtype == TYPE_DISK)
 3728			device->rescan = true;
 3729	}
 3730
 3731	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 3732}
 3733
 3734static void pqi_disable_raid_bypass(struct pqi_ctrl_info *ctrl_info)
 3735{
 3736	unsigned long flags;
 3737	struct pqi_scsi_dev *device;
 3738
 3739	spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
 3740
 3741	list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry)
 3742		if (device->raid_bypass_enabled)
 3743			device->raid_bypass_enabled = false;
 3744
 3745	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 3746}
 3747
 3748static void pqi_event_worker(struct work_struct *work)
 3749{
 3750	unsigned int i;
 3751	bool rescan_needed;
 3752	struct pqi_ctrl_info *ctrl_info;
 3753	struct pqi_event *event;
 3754	bool ack_event;
 3755
 3756	ctrl_info = container_of(work, struct pqi_ctrl_info, event_work);
 3757
 3758	pqi_ctrl_busy(ctrl_info);
 3759	pqi_wait_if_ctrl_blocked(ctrl_info);
 3760	if (pqi_ctrl_offline(ctrl_info))
 3761		goto out;
 3762
 3763	rescan_needed = false;
 3764	event = ctrl_info->events;
 3765	for (i = 0; i < PQI_NUM_SUPPORTED_EVENTS; i++) {
 3766		if (event->pending) {
 3767			event->pending = false;
 3768			if (event->event_type == PQI_EVENT_TYPE_OFA) {
 3769				ack_event = pqi_ofa_process_event(ctrl_info, event);
 3770			} else {
 3771				ack_event = true;
 3772				rescan_needed = true;
 3773				if (event->event_type == PQI_EVENT_TYPE_LOGICAL_DEVICE)
 3774					pqi_mark_volumes_for_rescan(ctrl_info);
 3775				else if (event->event_type == PQI_EVENT_TYPE_AIO_STATE_CHANGE)
 3776					pqi_disable_raid_bypass(ctrl_info);
 3777			}
 3778			if (ack_event)
 3779				pqi_acknowledge_event(ctrl_info, event);
 3780		}
 3781		event++;
 3782	}
 3783
 3784#define PQI_RESCAN_WORK_FOR_EVENT_DELAY		(5 * HZ)
 3785
 3786	if (rescan_needed)
 3787		pqi_schedule_rescan_worker_with_delay(ctrl_info,
 3788			PQI_RESCAN_WORK_FOR_EVENT_DELAY);
 3789
 3790out:
 3791	pqi_ctrl_unbusy(ctrl_info);
 3792}
 3793
 3794#define PQI_HEARTBEAT_TIMER_INTERVAL	(10 * HZ)
 3795
 3796static void pqi_heartbeat_timer_handler(struct timer_list *t)
 3797{
 3798	int num_interrupts;
 3799	u32 heartbeat_count;
 3800	struct pqi_ctrl_info *ctrl_info = from_timer(ctrl_info, t, heartbeat_timer);
 3801
 3802	pqi_check_ctrl_health(ctrl_info);
 3803	if (pqi_ctrl_offline(ctrl_info))
 3804		return;
 3805
 3806	num_interrupts = atomic_read(&ctrl_info->num_interrupts);
 3807	heartbeat_count = pqi_read_heartbeat_counter(ctrl_info);
 3808
 3809	if (num_interrupts == ctrl_info->previous_num_interrupts) {
 3810		if (heartbeat_count == ctrl_info->previous_heartbeat_count) {
 3811			dev_err(&ctrl_info->pci_dev->dev,
 3812				"no heartbeat detected - last heartbeat count: %u\n",
 3813				heartbeat_count);
 3814			pqi_take_ctrl_offline(ctrl_info, PQI_NO_HEARTBEAT);
 3815			return;
 3816		}
 3817	} else {
 3818		ctrl_info->previous_num_interrupts = num_interrupts;
 3819	}
 3820
 3821	ctrl_info->previous_heartbeat_count = heartbeat_count;
 3822	mod_timer(&ctrl_info->heartbeat_timer,
 3823		jiffies + PQI_HEARTBEAT_TIMER_INTERVAL);
 3824}
 3825
 3826static void pqi_start_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
 3827{
 3828	if (!ctrl_info->heartbeat_counter)
 3829		return;
 3830
 3831	ctrl_info->previous_num_interrupts =
 3832		atomic_read(&ctrl_info->num_interrupts);
 3833	ctrl_info->previous_heartbeat_count =
 3834		pqi_read_heartbeat_counter(ctrl_info);
 3835
 3836	ctrl_info->heartbeat_timer.expires =
 3837		jiffies + PQI_HEARTBEAT_TIMER_INTERVAL;
 3838	add_timer(&ctrl_info->heartbeat_timer);
 3839}
 3840
 3841static inline void pqi_stop_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
 3842{
 3843	del_timer_sync(&ctrl_info->heartbeat_timer);
 3844}
 3845
 3846static void pqi_ofa_capture_event_payload(struct pqi_ctrl_info *ctrl_info,
 3847	struct pqi_event *event, struct pqi_event_response *response)
 3848{
 3849	switch (event->event_id) {
 3850	case PQI_EVENT_OFA_MEMORY_ALLOCATION:
 3851		ctrl_info->ofa_bytes_requested =
 3852			get_unaligned_le32(&response->data.ofa_memory_allocation.bytes_requested);
 3853		break;
 3854	case PQI_EVENT_OFA_CANCELED:
 3855		ctrl_info->ofa_cancel_reason =
 3856			get_unaligned_le16(&response->data.ofa_cancelled.reason);
 3857		break;
 3858	}
 3859}
 3860
 3861static int pqi_process_event_intr(struct pqi_ctrl_info *ctrl_info)
 3862{
 3863	int num_events;
 3864	pqi_index_t oq_pi;
 3865	pqi_index_t oq_ci;
 3866	struct pqi_event_queue *event_queue;
 3867	struct pqi_event_response *response;
 3868	struct pqi_event *event;
 3869	int event_index;
 3870
 3871	event_queue = &ctrl_info->event_queue;
 3872	num_events = 0;
 3873	oq_ci = event_queue->oq_ci_copy;
 3874
 3875	while (1) {
 3876		oq_pi = readl(event_queue->oq_pi);
 3877		if (oq_pi >= PQI_NUM_EVENT_QUEUE_ELEMENTS) {
 3878			pqi_invalid_response(ctrl_info, PQI_EVENT_PI_OUT_OF_RANGE);
 3879			dev_err(&ctrl_info->pci_dev->dev,
 3880				"event interrupt: producer index (%u) out of range (0-%u): consumer index: %u\n",
 3881				oq_pi, PQI_NUM_EVENT_QUEUE_ELEMENTS - 1, oq_ci);
 3882			return -1;
 3883		}
 3884
 3885		if (oq_pi == oq_ci)
 3886			break;
 3887
 3888		num_events++;
 3889		response = event_queue->oq_element_array + (oq_ci * PQI_EVENT_OQ_ELEMENT_LENGTH);
 3890
 3891		event_index = pqi_event_type_to_event_index(response->event_type);
 3892
 3893		if (event_index >= 0 && response->request_acknowledge) {
 3894			event = &ctrl_info->events[event_index];
 3895			event->pending = true;
 3896			event->event_type = response->event_type;
 3897			event->event_id = get_unaligned_le16(&response->event_id);
 3898			event->additional_event_id =
 3899				get_unaligned_le32(&response->additional_event_id);
 3900			if (event->event_type == PQI_EVENT_TYPE_OFA)
 3901				pqi_ofa_capture_event_payload(ctrl_info, event, response);
 3902		}
 3903
 3904		oq_ci = (oq_ci + 1) % PQI_NUM_EVENT_QUEUE_ELEMENTS;
 3905	}
 3906
 3907	if (num_events) {
 3908		event_queue->oq_ci_copy = oq_ci;
 3909		writel(oq_ci, event_queue->oq_ci);
 3910		schedule_work(&ctrl_info->event_work);
 3911	}
 3912
 3913	return num_events;
 3914}
 3915
 3916#define PQI_LEGACY_INTX_MASK	0x1
 3917
 3918static inline void pqi_configure_legacy_intx(struct pqi_ctrl_info *ctrl_info, bool enable_intx)
 3919{
 3920	u32 intx_mask;
 3921	struct pqi_device_registers __iomem *pqi_registers;
 3922	volatile void __iomem *register_addr;
 3923
 3924	pqi_registers = ctrl_info->pqi_registers;
 3925
 3926	if (enable_intx)
 3927		register_addr = &pqi_registers->legacy_intx_mask_clear;
 3928	else
 3929		register_addr = &pqi_registers->legacy_intx_mask_set;
 3930
 3931	intx_mask = readl(register_addr);
 3932	intx_mask |= PQI_LEGACY_INTX_MASK;
 3933	writel(intx_mask, register_addr);
 3934}
 3935
 3936static void pqi_change_irq_mode(struct pqi_ctrl_info *ctrl_info,
 3937	enum pqi_irq_mode new_mode)
 3938{
 3939	switch (ctrl_info->irq_mode) {
 3940	case IRQ_MODE_MSIX:
 3941		switch (new_mode) {
 3942		case IRQ_MODE_MSIX:
 3943			break;
 3944		case IRQ_MODE_INTX:
 3945			pqi_configure_legacy_intx(ctrl_info, true);
 3946			sis_enable_intx(ctrl_info);
 3947			break;
 3948		case IRQ_MODE_NONE:
 3949			break;
 3950		}
 3951		break;
 3952	case IRQ_MODE_INTX:
 3953		switch (new_mode) {
 3954		case IRQ_MODE_MSIX:
 3955			pqi_configure_legacy_intx(ctrl_info, false);
 3956			sis_enable_msix(ctrl_info);
 3957			break;
 3958		case IRQ_MODE_INTX:
 3959			break;
 3960		case IRQ_MODE_NONE:
 3961			pqi_configure_legacy_intx(ctrl_info, false);
 3962			break;
 3963		}
 3964		break;
 3965	case IRQ_MODE_NONE:
 3966		switch (new_mode) {
 3967		case IRQ_MODE_MSIX:
 3968			sis_enable_msix(ctrl_info);
 3969			break;
 3970		case IRQ_MODE_INTX:
 3971			pqi_configure_legacy_intx(ctrl_info, true);
 3972			sis_enable_intx(ctrl_info);
 3973			break;
 3974		case IRQ_MODE_NONE:
 3975			break;
 3976		}
 3977		break;
 3978	}
 3979
 3980	ctrl_info->irq_mode = new_mode;
 3981}
 3982
 3983#define PQI_LEGACY_INTX_PENDING		0x1
 3984
 3985static inline bool pqi_is_valid_irq(struct pqi_ctrl_info *ctrl_info)
 3986{
 3987	bool valid_irq;
 3988	u32 intx_status;
 3989
 3990	switch (ctrl_info->irq_mode) {
 3991	case IRQ_MODE_MSIX:
 3992		valid_irq = true;
 3993		break;
 3994	case IRQ_MODE_INTX:
 3995		intx_status = readl(&ctrl_info->pqi_registers->legacy_intx_status);
 3996		if (intx_status & PQI_LEGACY_INTX_PENDING)
 3997			valid_irq = true;
 3998		else
 3999			valid_irq = false;
 4000		break;
 4001	case IRQ_MODE_NONE:
 4002	default:
 4003		valid_irq = false;
 4004		break;
 4005	}
 4006
 4007	return valid_irq;
 4008}
 4009
 4010static irqreturn_t pqi_irq_handler(int irq, void *data)
 4011{
 4012	struct pqi_ctrl_info *ctrl_info;
 4013	struct pqi_queue_group *queue_group;
 4014	int num_io_responses_handled;
 4015	int num_events_handled;
 4016
 4017	queue_group = data;
 4018	ctrl_info = queue_group->ctrl_info;
 4019
 4020	if (!pqi_is_valid_irq(ctrl_info))
 4021		return IRQ_NONE;
 4022
 4023	num_io_responses_handled = pqi_process_io_intr(ctrl_info, queue_group);
 4024	if (num_io_responses_handled < 0)
 4025		goto out;
 4026
 4027	if (irq == ctrl_info->event_irq) {
 4028		num_events_handled = pqi_process_event_intr(ctrl_info);
 4029		if (num_events_handled < 0)
 4030			goto out;
 4031	} else {
 4032		num_events_handled = 0;
 4033	}
 4034
 4035	if (num_io_responses_handled + num_events_handled > 0)
 4036		atomic_inc(&ctrl_info->num_interrupts);
 4037
 4038	pqi_start_io(ctrl_info, queue_group, RAID_PATH, NULL);
 4039	pqi_start_io(ctrl_info, queue_group, AIO_PATH, NULL);
 4040
 4041out:
 4042	return IRQ_HANDLED;
 4043}
 4044
 4045static int pqi_request_irqs(struct pqi_ctrl_info *ctrl_info)
 4046{
 4047	struct pci_dev *pci_dev = ctrl_info->pci_dev;
 4048	int i;
 4049	int rc;
 4050
 4051	ctrl_info->event_irq = pci_irq_vector(pci_dev, 0);
 4052
 4053	for (i = 0; i < ctrl_info->num_msix_vectors_enabled; i++) {
 4054		rc = request_irq(pci_irq_vector(pci_dev, i), pqi_irq_handler, 0,
 4055			DRIVER_NAME_SHORT, &ctrl_info->queue_groups[i]);
 4056		if (rc) {
 4057			dev_err(&pci_dev->dev,
 4058				"irq %u init failed with error %d\n",
 4059				pci_irq_vector(pci_dev, i), rc);
 4060			return rc;
 4061		}
 4062		ctrl_info->num_msix_vectors_initialized++;
 4063	}
 4064
 4065	return 0;
 4066}
 4067
 4068static void pqi_free_irqs(struct pqi_ctrl_info *ctrl_info)
 4069{
 4070	int i;
 4071
 4072	for (i = 0; i < ctrl_info->num_msix_vectors_initialized; i++)
 4073		free_irq(pci_irq_vector(ctrl_info->pci_dev, i),
 4074			&ctrl_info->queue_groups[i]);
 4075
 4076	ctrl_info->num_msix_vectors_initialized = 0;
 4077}
 4078
 4079static int pqi_enable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
 4080{
 4081	int num_vectors_enabled;
 4082	unsigned int flags = PCI_IRQ_MSIX;
 4083
 4084	if (!pqi_disable_managed_interrupts)
 4085		flags |= PCI_IRQ_AFFINITY;
 4086
 4087	num_vectors_enabled = pci_alloc_irq_vectors(ctrl_info->pci_dev,
 4088			PQI_MIN_MSIX_VECTORS, ctrl_info->num_queue_groups,
 4089			flags);
 4090	if (num_vectors_enabled < 0) {
 4091		dev_err(&ctrl_info->pci_dev->dev,
 4092			"MSI-X init failed with error %d\n",
 4093			num_vectors_enabled);
 4094		return num_vectors_enabled;
 4095	}
 4096
 4097	ctrl_info->num_msix_vectors_enabled = num_vectors_enabled;
 4098	ctrl_info->irq_mode = IRQ_MODE_MSIX;
 4099	return 0;
 4100}
 4101
 4102static void pqi_disable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
 4103{
 4104	if (ctrl_info->num_msix_vectors_enabled) {
 4105		pci_free_irq_vectors(ctrl_info->pci_dev);
 4106		ctrl_info->num_msix_vectors_enabled = 0;
 4107	}
 4108}
 4109
 4110static int pqi_alloc_operational_queues(struct pqi_ctrl_info *ctrl_info)
 4111{
 4112	unsigned int i;
 4113	size_t alloc_length;
 4114	size_t element_array_length_per_iq;
 4115	size_t element_array_length_per_oq;
 4116	void *element_array;
 4117	void __iomem *next_queue_index;
 4118	void *aligned_pointer;
 4119	unsigned int num_inbound_queues;
 4120	unsigned int num_outbound_queues;
 4121	unsigned int num_queue_indexes;
 4122	struct pqi_queue_group *queue_group;
 4123
 4124	element_array_length_per_iq =
 4125		PQI_OPERATIONAL_IQ_ELEMENT_LENGTH *
 4126		ctrl_info->num_elements_per_iq;
 4127	element_array_length_per_oq =
 4128		PQI_OPERATIONAL_OQ_ELEMENT_LENGTH *
 4129		ctrl_info->num_elements_per_oq;
 4130	num_inbound_queues = ctrl_info->num_queue_groups * 2;
 4131	num_outbound_queues = ctrl_info->num_queue_groups;
 4132	num_queue_indexes = (ctrl_info->num_queue_groups * 3) + 1;
 4133
 4134	aligned_pointer = NULL;
 4135
 4136	for (i = 0; i < num_inbound_queues; i++) {
 4137		aligned_pointer = PTR_ALIGN(aligned_pointer,
 4138			PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
 4139		aligned_pointer += element_array_length_per_iq;
 4140	}
 4141
 4142	for (i = 0; i < num_outbound_queues; i++) {
 4143		aligned_pointer = PTR_ALIGN(aligned_pointer,
 4144			PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
 4145		aligned_pointer += element_array_length_per_oq;
 4146	}
 4147
 4148	aligned_pointer = PTR_ALIGN(aligned_pointer,
 4149		PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
 4150	aligned_pointer += PQI_NUM_EVENT_QUEUE_ELEMENTS *
 4151		PQI_EVENT_OQ_ELEMENT_LENGTH;
 4152
 4153	for (i = 0; i < num_queue_indexes; i++) {
 4154		aligned_pointer = PTR_ALIGN(aligned_pointer,
 4155			PQI_OPERATIONAL_INDEX_ALIGNMENT);
 4156		aligned_pointer += sizeof(pqi_index_t);
 4157	}
 4158
 4159	alloc_length = (size_t)aligned_pointer +
 4160		PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
 4161
 4162	alloc_length += PQI_EXTRA_SGL_MEMORY;
 4163
 4164	ctrl_info->queue_memory_base =
 4165		dma_alloc_coherent(&ctrl_info->pci_dev->dev, alloc_length,
 4166				   &ctrl_info->queue_memory_base_dma_handle,
 4167				   GFP_KERNEL);
 4168
 4169	if (!ctrl_info->queue_memory_base)
 4170		return -ENOMEM;
 4171
 4172	ctrl_info->queue_memory_length = alloc_length;
 4173
 4174	element_array = PTR_ALIGN(ctrl_info->queue_memory_base,
 4175		PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
 4176
 4177	for (i = 0; i < ctrl_info->num_queue_groups; i++) {
 4178		queue_group = &ctrl_info->queue_groups[i];
 4179		queue_group->iq_element_array[RAID_PATH] = element_array;
 4180		queue_group->iq_element_array_bus_addr[RAID_PATH] =
 4181			ctrl_info->queue_memory_base_dma_handle +
 4182				(element_array - ctrl_info->queue_memory_base);
 4183		element_array += element_array_length_per_iq;
 4184		element_array = PTR_ALIGN(element_array,
 4185			PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
 4186		queue_group->iq_element_array[AIO_PATH] = element_array;
 4187		queue_group->iq_element_array_bus_addr[AIO_PATH] =
 4188			ctrl_info->queue_memory_base_dma_handle +
 4189			(element_array - ctrl_info->queue_memory_base);
 4190		element_array += element_array_length_per_iq;
 4191		element_array = PTR_ALIGN(element_array,
 4192			PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
 4193	}
 4194
 4195	for (i = 0; i < ctrl_info->num_queue_groups; i++) {
 4196		queue_group = &ctrl_info->queue_groups[i];
 4197		queue_group->oq_element_array = element_array;
 4198		queue_group->oq_element_array_bus_addr =
 4199			ctrl_info->queue_memory_base_dma_handle +
 4200			(element_array - ctrl_info->queue_memory_base);
 4201		element_array += element_array_length_per_oq;
 4202		element_array = PTR_ALIGN(element_array,
 4203			PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
 4204	}
 4205
 4206	ctrl_info->event_queue.oq_element_array = element_array;
 4207	ctrl_info->event_queue.oq_element_array_bus_addr =
 4208		ctrl_info->queue_memory_base_dma_handle +
 4209		(element_array - ctrl_info->queue_memory_base);
 4210	element_array += PQI_NUM_EVENT_QUEUE_ELEMENTS *
 4211		PQI_EVENT_OQ_ELEMENT_LENGTH;
 4212
 4213	next_queue_index = (void __iomem *)PTR_ALIGN(element_array,
 4214		PQI_OPERATIONAL_INDEX_ALIGNMENT);
 4215
 4216	for (i = 0; i < ctrl_info->num_queue_groups; i++) {
 4217		queue_group = &ctrl_info->queue_groups[i];
 4218		queue_group->iq_ci[RAID_PATH] = next_queue_index;
 4219		queue_group->iq_ci_bus_addr[RAID_PATH] =
 4220			ctrl_info->queue_memory_base_dma_handle +
 4221			(next_queue_index -
 4222			(void __iomem *)ctrl_info->queue_memory_base);
 4223		next_queue_index += sizeof(pqi_index_t);
 4224		next_queue_index = PTR_ALIGN(next_queue_index,
 4225			PQI_OPERATIONAL_INDEX_ALIGNMENT);
 4226		queue_group->iq_ci[AIO_PATH] = next_queue_index;
 4227		queue_group->iq_ci_bus_addr[AIO_PATH] =
 4228			ctrl_info->queue_memory_base_dma_handle +
 4229			(next_queue_index -
 4230			(void __iomem *)ctrl_info->queue_memory_base);
 4231		next_queue_index += sizeof(pqi_index_t);
 4232		next_queue_index = PTR_ALIGN(next_queue_index,
 4233			PQI_OPERATIONAL_INDEX_ALIGNMENT);
 4234		queue_group->oq_pi = next_queue_index;
 4235		queue_group->oq_pi_bus_addr =
 4236			ctrl_info->queue_memory_base_dma_handle +
 4237			(next_queue_index -
 4238			(void __iomem *)ctrl_info->queue_memory_base);
 4239		next_queue_index += sizeof(pqi_index_t);
 4240		next_queue_index = PTR_ALIGN(next_queue_index,
 4241			PQI_OPERATIONAL_INDEX_ALIGNMENT);
 4242	}
 4243
 4244	ctrl_info->event_queue.oq_pi = next_queue_index;
 4245	ctrl_info->event_queue.oq_pi_bus_addr =
 4246		ctrl_info->queue_memory_base_dma_handle +
 4247		(next_queue_index -
 4248		(void __iomem *)ctrl_info->queue_memory_base);
 4249
 4250	return 0;
 4251}
 4252
 4253static void pqi_init_operational_queues(struct pqi_ctrl_info *ctrl_info)
 4254{
 4255	unsigned int i;
 4256	u16 next_iq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
 4257	u16 next_oq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
 4258
 4259	/*
 4260	 * Initialize the backpointers to the controller structure in
 4261	 * each operational queue group structure.
 4262	 */
 4263	for (i = 0; i < ctrl_info->num_queue_groups; i++)
 4264		ctrl_info->queue_groups[i].ctrl_info = ctrl_info;
 4265
 4266	/*
 4267	 * Assign IDs to all operational queues.  Note that the IDs
 4268	 * assigned to operational IQs are independent of the IDs
 4269	 * assigned to operational OQs.
 4270	 */
 4271	ctrl_info->event_queue.oq_id = next_oq_id++;
 4272	for (i = 0; i < ctrl_info->num_queue_groups; i++) {
 4273		ctrl_info->queue_groups[i].iq_id[RAID_PATH] = next_iq_id++;
 4274		ctrl_info->queue_groups[i].iq_id[AIO_PATH] = next_iq_id++;
 4275		ctrl_info->queue_groups[i].oq_id = next_oq_id++;
 4276	}
 4277
 4278	/*
 4279	 * Assign MSI-X table entry indexes to all queues.  Note that the
 4280	 * interrupt for the event queue is shared with the first queue group.
 4281	 */
 4282	ctrl_info->event_queue.int_msg_num = 0;
 4283	for (i = 0; i < ctrl_info->num_queue_groups; i++)
 4284		ctrl_info->queue_groups[i].int_msg_num = i;
 4285
 4286	for (i = 0; i < ctrl_info->num_queue_groups; i++) {
 4287		spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[0]);
 4288		spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[1]);
 4289		INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[0]);
 4290		INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[1]);
 4291	}
 4292}
 4293
 4294static int pqi_alloc_admin_queues(struct pqi_ctrl_info *ctrl_info)
 4295{
 4296	size_t alloc_length;
 4297	struct pqi_admin_queues_aligned *admin_queues_aligned;
 4298	struct pqi_admin_queues *admin_queues;
 4299
 4300	alloc_length = sizeof(struct pqi_admin_queues_aligned) +
 4301		PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
 4302
 4303	ctrl_info->admin_queue_memory_base =
 4304		dma_alloc_coherent(&ctrl_info->pci_dev->dev, alloc_length,
 4305				   &ctrl_info->admin_queue_memory_base_dma_handle,
 4306				   GFP_KERNEL);
 4307
 4308	if (!ctrl_info->admin_queue_memory_base)
 4309		return -ENOMEM;
 4310
 4311	ctrl_info->admin_queue_memory_length = alloc_length;
 4312
 4313	admin_queues = &ctrl_info->admin_queues;
 4314	admin_queues_aligned = PTR_ALIGN(ctrl_info->admin_queue_memory_base,
 4315		PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
 4316	admin_queues->iq_element_array =
 4317		&admin_queues_aligned->iq_element_array;
 4318	admin_queues->oq_element_array =
 4319		&admin_queues_aligned->oq_element_array;
 4320	admin_queues->iq_ci =
 4321		(pqi_index_t __iomem *)&admin_queues_aligned->iq_ci;
 4322	admin_queues->oq_pi =
 4323		(pqi_index_t __iomem *)&admin_queues_aligned->oq_pi;
 4324
 4325	admin_queues->iq_element_array_bus_addr =
 4326		ctrl_info->admin_queue_memory_base_dma_handle +
 4327		(admin_queues->iq_element_array -
 4328		ctrl_info->admin_queue_memory_base);
 4329	admin_queues->oq_element_array_bus_addr =
 4330		ctrl_info->admin_queue_memory_base_dma_handle +
 4331		(admin_queues->oq_element_array -
 4332		ctrl_info->admin_queue_memory_base);
 4333	admin_queues->iq_ci_bus_addr =
 4334		ctrl_info->admin_queue_memory_base_dma_handle +
 4335		((void __iomem *)admin_queues->iq_ci -
 4336		(void __iomem *)ctrl_info->admin_queue_memory_base);
 4337	admin_queues->oq_pi_bus_addr =
 4338		ctrl_info->admin_queue_memory_base_dma_handle +
 4339		((void __iomem *)admin_queues->oq_pi -
 4340		(void __iomem *)ctrl_info->admin_queue_memory_base);
 4341
 4342	return 0;
 4343}
 4344
 4345#define PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES		HZ
 4346#define PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS	1
 4347
 4348static int pqi_create_admin_queues(struct pqi_ctrl_info *ctrl_info)
 4349{
 4350	struct pqi_device_registers __iomem *pqi_registers;
 4351	struct pqi_admin_queues *admin_queues;
 4352	unsigned long timeout;
 4353	u8 status;
 4354	u32 reg;
 4355
 4356	pqi_registers = ctrl_info->pqi_registers;
 4357	admin_queues = &ctrl_info->admin_queues;
 4358
 4359	writeq((u64)admin_queues->iq_element_array_bus_addr,
 4360		&pqi_registers->admin_iq_element_array_addr);
 4361	writeq((u64)admin_queues->oq_element_array_bus_addr,
 4362		&pqi_registers->admin_oq_element_array_addr);
 4363	writeq((u64)admin_queues->iq_ci_bus_addr,
 4364		&pqi_registers->admin_iq_ci_addr);
 4365	writeq((u64)admin_queues->oq_pi_bus_addr,
 4366		&pqi_registers->admin_oq_pi_addr);
 4367
 4368	reg = PQI_ADMIN_IQ_NUM_ELEMENTS |
 4369		(PQI_ADMIN_OQ_NUM_ELEMENTS << 8) |
 4370		(admin_queues->int_msg_num << 16);
 4371	writel(reg, &pqi_registers->admin_iq_num_elements);
 4372
 4373	writel(PQI_CREATE_ADMIN_QUEUE_PAIR,
 4374		&pqi_registers->function_and_status_code);
 4375
 4376	timeout = PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES + jiffies;
 4377	while (1) {
 4378		msleep(PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS);
 4379		status = readb(&pqi_registers->function_and_status_code);
 4380		if (status == PQI_STATUS_IDLE)
 4381			break;
 4382		if (time_after(jiffies, timeout))
 4383			return -ETIMEDOUT;
 4384	}
 4385
 4386	/*
 4387	 * The offset registers are not initialized to the correct
 4388	 * offsets until *after* the create admin queue pair command
 4389	 * completes successfully.
 4390	 */
 4391	admin_queues->iq_pi = ctrl_info->iomem_base +
 4392		PQI_DEVICE_REGISTERS_OFFSET +
 4393		readq(&pqi_registers->admin_iq_pi_offset);
 4394	admin_queues->oq_ci = ctrl_info->iomem_base +
 4395		PQI_DEVICE_REGISTERS_OFFSET +
 4396		readq(&pqi_registers->admin_oq_ci_offset);
 4397
 4398	return 0;
 4399}
 4400
 4401static void pqi_submit_admin_request(struct pqi_ctrl_info *ctrl_info,
 4402	struct pqi_general_admin_request *request)
 4403{
 4404	struct pqi_admin_queues *admin_queues;
 4405	void *next_element;
 4406	pqi_index_t iq_pi;
 4407
 4408	admin_queues = &ctrl_info->admin_queues;
 4409	iq_pi = admin_queues->iq_pi_copy;
 4410
 4411	next_element = admin_queues->iq_element_array +
 4412		(iq_pi * PQI_ADMIN_IQ_ELEMENT_LENGTH);
 4413
 4414	memcpy(next_element, request, sizeof(*request));
 4415
 4416	iq_pi = (iq_pi + 1) % PQI_ADMIN_IQ_NUM_ELEMENTS;
 4417	admin_queues->iq_pi_copy = iq_pi;
 4418
 4419	/*
 4420	 * This write notifies the controller that an IU is available to be
 4421	 * processed.
 4422	 */
 4423	writel(iq_pi, admin_queues->iq_pi);
 4424}
 4425
 4426#define PQI_ADMIN_REQUEST_TIMEOUT_SECS	60
 4427
 4428static int pqi_poll_for_admin_response(struct pqi_ctrl_info *ctrl_info,
 4429	struct pqi_general_admin_response *response)
 4430{
 4431	struct pqi_admin_queues *admin_queues;
 4432	pqi_index_t oq_pi;
 4433	pqi_index_t oq_ci;
 4434	unsigned long timeout;
 4435
 4436	admin_queues = &ctrl_info->admin_queues;
 4437	oq_ci = admin_queues->oq_ci_copy;
 4438
 4439	timeout = (PQI_ADMIN_REQUEST_TIMEOUT_SECS * HZ) + jiffies;
 4440
 4441	while (1) {
 4442		oq_pi = readl(admin_queues->oq_pi);
 4443		if (oq_pi != oq_ci)
 4444			break;
 4445		if (time_after(jiffies, timeout)) {
 4446			dev_err(&ctrl_info->pci_dev->dev,
 4447				"timed out waiting for admin response\n");
 4448			return -ETIMEDOUT;
 4449		}
 4450		if (!sis_is_firmware_running(ctrl_info))
 4451			return -ENXIO;
 4452		usleep_range(1000, 2000);
 4453	}
 4454
 4455	memcpy(response, admin_queues->oq_element_array +
 4456		(oq_ci * PQI_ADMIN_OQ_ELEMENT_LENGTH), sizeof(*response));
 4457
 4458	oq_ci = (oq_ci + 1) % PQI_ADMIN_OQ_NUM_ELEMENTS;
 4459	admin_queues->oq_ci_copy = oq_ci;
 4460	writel(oq_ci, admin_queues->oq_ci);
 4461
 4462	return 0;
 4463}
 4464
 4465static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
 4466	struct pqi_queue_group *queue_group, enum pqi_io_path path,
 4467	struct pqi_io_request *io_request)
 4468{
 4469	struct pqi_io_request *next;
 4470	void *next_element;
 4471	pqi_index_t iq_pi;
 4472	pqi_index_t iq_ci;
 4473	size_t iu_length;
 4474	unsigned long flags;
 4475	unsigned int num_elements_needed;
 4476	unsigned int num_elements_to_end_of_queue;
 4477	size_t copy_count;
 4478	struct pqi_iu_header *request;
 4479
 4480	spin_lock_irqsave(&queue_group->submit_lock[path], flags);
 4481
 4482	if (io_request) {
 4483		io_request->queue_group = queue_group;
 4484		list_add_tail(&io_request->request_list_entry,
 4485			&queue_group->request_list[path]);
 4486	}
 4487
 4488	iq_pi = queue_group->iq_pi_copy[path];
 4489
 4490	list_for_each_entry_safe(io_request, next,
 4491		&queue_group->request_list[path], request_list_entry) {
 4492
 4493		request = io_request->iu;
 4494
 4495		iu_length = get_unaligned_le16(&request->iu_length) +
 4496			PQI_REQUEST_HEADER_LENGTH;
 4497		num_elements_needed =
 4498			DIV_ROUND_UP(iu_length,
 4499				PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
 4500
 4501		iq_ci = readl(queue_group->iq_ci[path]);
 4502
 4503		if (num_elements_needed > pqi_num_elements_free(iq_pi, iq_ci,
 4504			ctrl_info->num_elements_per_iq))
 4505			break;
 4506
 4507		put_unaligned_le16(queue_group->oq_id,
 4508			&request->response_queue_id);
 4509
 4510		next_element = queue_group->iq_element_array[path] +
 4511			(iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
 4512
 4513		num_elements_to_end_of_queue =
 4514			ctrl_info->num_elements_per_iq - iq_pi;
 4515
 4516		if (num_elements_needed <= num_elements_to_end_of_queue) {
 4517			memcpy(next_element, request, iu_length);
 4518		} else {
 4519			copy_count = num_elements_to_end_of_queue *
 4520				PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
 4521			memcpy(next_element, request, copy_count);
 4522			memcpy(queue_group->iq_element_array[path],
 4523				(u8 *)request + copy_count,
 4524				iu_length - copy_count);
 4525		}
 4526
 4527		iq_pi = (iq_pi + num_elements_needed) %
 4528			ctrl_info->num_elements_per_iq;
 4529
 4530		list_del(&io_request->request_list_entry);
 4531	}
 4532
 4533	if (iq_pi != queue_group->iq_pi_copy[path]) {
 4534		queue_group->iq_pi_copy[path] = iq_pi;
 4535		/*
 4536		 * This write notifies the controller that one or more IUs are
 4537		 * available to be processed.
 4538		 */
 4539		writel(iq_pi, queue_group->iq_pi[path]);
 4540	}
 4541
 4542	spin_unlock_irqrestore(&queue_group->submit_lock[path], flags);
 4543}
 4544
 4545#define PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS		10
 4546
 4547static int pqi_wait_for_completion_io(struct pqi_ctrl_info *ctrl_info,
 4548	struct completion *wait)
 4549{
 4550	int rc;
 4551
 4552	while (1) {
 4553		if (wait_for_completion_io_timeout(wait,
 4554			PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS * HZ)) {
 4555			rc = 0;
 4556			break;
 4557		}
 4558
 4559		pqi_check_ctrl_health(ctrl_info);
 4560		if (pqi_ctrl_offline(ctrl_info)) {
 4561			rc = -ENXIO;
 4562			break;
 4563		}
 4564	}
 4565
 4566	return rc;
 4567}
 4568
 4569static void pqi_raid_synchronous_complete(struct pqi_io_request *io_request,
 4570	void *context)
 4571{
 4572	struct completion *waiting = context;
 4573
 4574	complete(waiting);
 4575}
 4576
 4577static int pqi_process_raid_io_error_synchronous(
 4578	struct pqi_raid_error_info *error_info)
 4579{
 4580	int rc = -EIO;
 4581
 4582	switch (error_info->data_out_result) {
 4583	case PQI_DATA_IN_OUT_GOOD:
 4584		if (error_info->status == SAM_STAT_GOOD)
 4585			rc = 0;
 4586		break;
 4587	case PQI_DATA_IN_OUT_UNDERFLOW:
 4588		if (error_info->status == SAM_STAT_GOOD ||
 4589			error_info->status == SAM_STAT_CHECK_CONDITION)
 4590			rc = 0;
 4591		break;
 4592	case PQI_DATA_IN_OUT_ABORTED:
 4593		rc = PQI_CMD_STATUS_ABORTED;
 4594		break;
 4595	}
 4596
 4597	return rc;
 4598}
 4599
 4600static inline bool pqi_is_blockable_request(struct pqi_iu_header *request)
 4601{
 4602	return (request->driver_flags & PQI_DRIVER_NONBLOCKABLE_REQUEST) == 0;
 4603}
 4604
 4605static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
 4606	struct pqi_iu_header *request, unsigned int flags,
 4607	struct pqi_raid_error_info *error_info)
 4608{
 4609	int rc = 0;
 4610	struct pqi_io_request *io_request;
 4611	size_t iu_length;
 4612	DECLARE_COMPLETION_ONSTACK(wait);
 4613
 4614	if (flags & PQI_SYNC_FLAGS_INTERRUPTABLE) {
 4615		if (down_interruptible(&ctrl_info->sync_request_sem))
 4616			return -ERESTARTSYS;
 4617	} else {
 4618		down(&ctrl_info->sync_request_sem);
 4619	}
 4620
 4621	pqi_ctrl_busy(ctrl_info);
 4622	/*
 4623	 * Wait for other admin queue updates such as;
 4624	 * config table changes, OFA memory updates, ...
 4625	 */
 4626	if (pqi_is_blockable_request(request))
 4627		pqi_wait_if_ctrl_blocked(ctrl_info);
 4628
 4629	if (pqi_ctrl_offline(ctrl_info)) {
 4630		rc = -ENXIO;
 4631		goto out;
 4632	}
 4633
 4634	io_request = pqi_alloc_io_request(ctrl_info, NULL);
 4635
 4636	put_unaligned_le16(io_request->index,
 4637		&(((struct pqi_raid_path_request *)request)->request_id));
 4638
 4639	if (request->iu_type == PQI_REQUEST_IU_RAID_PATH_IO)
 4640		((struct pqi_raid_path_request *)request)->error_index =
 4641			((struct pqi_raid_path_request *)request)->request_id;
 4642
 4643	iu_length = get_unaligned_le16(&request->iu_length) +
 4644		PQI_REQUEST_HEADER_LENGTH;
 4645	memcpy(io_request->iu, request, iu_length);
 4646
 4647	io_request->io_complete_callback = pqi_raid_synchronous_complete;
 4648	io_request->context = &wait;
 4649
 4650	pqi_start_io(ctrl_info, &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
 4651		io_request);
 4652
 4653	pqi_wait_for_completion_io(ctrl_info, &wait);
 4654
 4655	if (error_info) {
 4656		if (io_request->error_info)
 4657			memcpy(error_info, io_request->error_info, sizeof(*error_info));
 4658		else
 4659			memset(error_info, 0, sizeof(*error_info));
 4660	} else if (rc == 0 && io_request->error_info) {
 4661		rc = pqi_process_raid_io_error_synchronous(io_request->error_info);
 4662	}
 4663
 4664	pqi_free_io_request(io_request);
 4665
 4666out:
 4667	pqi_ctrl_unbusy(ctrl_info);
 4668	up(&ctrl_info->sync_request_sem);
 4669
 4670	return rc;
 4671}
 4672
 4673static int pqi_validate_admin_response(
 4674	struct pqi_general_admin_response *response, u8 expected_function_code)
 4675{
 4676	if (response->header.iu_type != PQI_RESPONSE_IU_GENERAL_ADMIN)
 4677		return -EINVAL;
 4678
 4679	if (get_unaligned_le16(&response->header.iu_length) !=
 4680		PQI_GENERAL_ADMIN_IU_LENGTH)
 4681		return -EINVAL;
 4682
 4683	if (response->function_code != expected_function_code)
 4684		return -EINVAL;
 4685
 4686	if (response->status != PQI_GENERAL_ADMIN_STATUS_SUCCESS)
 4687		return -EINVAL;
 4688
 4689	return 0;
 4690}
 4691
 4692static int pqi_submit_admin_request_synchronous(
 4693	struct pqi_ctrl_info *ctrl_info,
 4694	struct pqi_general_admin_request *request,
 4695	struct pqi_general_admin_response *response)
 4696{
 4697	int rc;
 4698
 4699	pqi_submit_admin_request(ctrl_info, request);
 4700
 4701	rc = pqi_poll_for_admin_response(ctrl_info, response);
 4702
 4703	if (rc == 0)
 4704		rc = pqi_validate_admin_response(response, request->function_code);
 4705
 4706	return rc;
 4707}
 4708
 4709static int pqi_report_device_capability(struct pqi_ctrl_info *ctrl_info)
 4710{
 4711	int rc;
 4712	struct pqi_general_admin_request request;
 4713	struct pqi_general_admin_response response;
 4714	struct pqi_device_capability *capability;
 4715	struct pqi_iu_layer_descriptor *sop_iu_layer_descriptor;
 4716
 4717	capability = kmalloc(sizeof(*capability), GFP_KERNEL);
 4718	if (!capability)
 4719		return -ENOMEM;
 4720
 4721	memset(&request, 0, sizeof(request));
 4722
 4723	request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
 4724	put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
 4725		&request.header.iu_length);
 4726	request.function_code =
 4727		PQI_GENERAL_ADMIN_FUNCTION_REPORT_DEVICE_CAPABILITY;
 4728	put_unaligned_le32(sizeof(*capability),
 4729		&request.data.report_device_capability.buffer_length);
 4730
 4731	rc = pqi_map_single(ctrl_info->pci_dev,
 4732		&request.data.report_device_capability.sg_descriptor,
 4733		capability, sizeof(*capability),
 4734		DMA_FROM_DEVICE);
 4735	if (rc)
 4736		goto out;
 4737
 4738	rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, &response);
 4739
 4740	pqi_pci_unmap(ctrl_info->pci_dev,
 4741		&request.data.report_device_capability.sg_descriptor, 1,
 4742		DMA_FROM_DEVICE);
 4743
 4744	if (rc)
 4745		goto out;
 4746
 4747	if (response.status != PQI_GENERAL_ADMIN_STATUS_SUCCESS) {
 4748		rc = -EIO;
 4749		goto out;
 4750	}
 4751
 4752	ctrl_info->max_inbound_queues =
 4753		get_unaligned_le16(&capability->max_inbound_queues);
 4754	ctrl_info->max_elements_per_iq =
 4755		get_unaligned_le16(&capability->max_elements_per_iq);
 4756	ctrl_info->max_iq_element_length =
 4757		get_unaligned_le16(&capability->max_iq_element_length)
 4758		* 16;
 4759	ctrl_info->max_outbound_queues =
 4760		get_unaligned_le16(&capability->max_outbound_queues);
 4761	ctrl_info->max_elements_per_oq =
 4762		get_unaligned_le16(&capability->max_elements_per_oq);
 4763	ctrl_info->max_oq_element_length =
 4764		get_unaligned_le16(&capability->max_oq_element_length)
 4765		* 16;
 4766
 4767	sop_iu_layer_descriptor =
 4768		&capability->iu_layer_descriptors[PQI_PROTOCOL_SOP];
 4769
 4770	ctrl_info->max_inbound_iu_length_per_firmware =
 4771		get_unaligned_le16(
 4772			&sop_iu_layer_descriptor->max_inbound_iu_length);
 4773	ctrl_info->inbound_spanning_supported =
 4774		sop_iu_layer_descriptor->inbound_spanning_supported;
 4775	ctrl_info->outbound_spanning_supported =
 4776		sop_iu_layer_descriptor->outbound_spanning_supported;
 4777
 4778out:
 4779	kfree(capability);
 4780
 4781	return rc;
 4782}
 4783
 4784static int pqi_validate_device_capability(struct pqi_ctrl_info *ctrl_info)
 4785{
 4786	if (ctrl_info->max_iq_element_length <
 4787		PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
 4788		dev_err(&ctrl_info->pci_dev->dev,
 4789			"max. inbound queue element length of %d is less than the required length of %d\n",
 4790			ctrl_info->max_iq_element_length,
 4791			PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
 4792		return -EINVAL;
 4793	}
 4794
 4795	if (ctrl_info->max_oq_element_length <
 4796		PQI_OPERATIONAL_OQ_ELEMENT_LENGTH) {
 4797		dev_err(&ctrl_info->pci_dev->dev,
 4798			"max. outbound queue element length of %d is less than the required length of %d\n",
 4799			ctrl_info->max_oq_element_length,
 4800			PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
 4801		return -EINVAL;
 4802	}
 4803
 4804	if (ctrl_info->max_inbound_iu_length_per_firmware <
 4805		PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
 4806		dev_err(&ctrl_info->pci_dev->dev,
 4807			"max. inbound IU length of %u is less than the min. required length of %d\n",
 4808			ctrl_info->max_inbound_iu_length_per_firmware,
 4809			PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
 4810		return -EINVAL;
 4811	}
 4812
 4813	if (!ctrl_info->inbound_spanning_supported) {
 4814		dev_err(&ctrl_info->pci_dev->dev,
 4815			"the controller does not support inbound spanning\n");
 4816		return -EINVAL;
 4817	}
 4818
 4819	if (ctrl_info->outbound_spanning_supported) {
 4820		dev_err(&ctrl_info->pci_dev->dev,
 4821			"the controller supports outbound spanning but this driver does not\n");
 4822		return -EINVAL;
 4823	}
 4824
 4825	return 0;
 4826}
 4827
 4828static int pqi_create_event_queue(struct pqi_ctrl_info *ctrl_info)
 4829{
 4830	int rc;
 4831	struct pqi_event_queue *event_queue;
 4832	struct pqi_general_admin_request request;
 4833	struct pqi_general_admin_response response;
 4834
 4835	event_queue = &ctrl_info->event_queue;
 4836
 4837	/*
 4838	 * Create OQ (Outbound Queue - device to host queue) to dedicate
 4839	 * to events.
 4840	 */
 4841	memset(&request, 0, sizeof(request));
 4842	request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
 4843	put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
 4844		&request.header.iu_length);
 4845	request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
 4846	put_unaligned_le16(event_queue->oq_id,
 4847		&request.data.create_operational_oq.queue_id);
 4848	put_unaligned_le64((u64)event_queue->oq_element_array_bus_addr,
 4849		&request.data.create_operational_oq.element_array_addr);
 4850	put_unaligned_le64((u64)event_queue->oq_pi_bus_addr,
 4851		&request.data.create_operational_oq.pi_addr);
 4852	put_unaligned_le16(PQI_NUM_EVENT_QUEUE_ELEMENTS,
 4853		&request.data.create_operational_oq.num_elements);
 4854	put_unaligned_le16(PQI_EVENT_OQ_ELEMENT_LENGTH / 16,
 4855		&request.data.create_operational_oq.element_length);
 4856	request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
 4857	put_unaligned_le16(event_queue->int_msg_num,
 4858		&request.data.create_operational_oq.int_msg_num);
 4859
 4860	rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
 4861		&response);
 4862	if (rc)
 4863		return rc;
 4864
 4865	event_queue->oq_ci = ctrl_info->iomem_base +
 4866		PQI_DEVICE_REGISTERS_OFFSET +
 4867		get_unaligned_le64(
 4868			&response.data.create_operational_oq.oq_ci_offset);
 4869
 4870	return 0;
 4871}
 4872
 4873static int pqi_create_queue_group(struct pqi_ctrl_info *ctrl_info,
 4874	unsigned int group_number)
 4875{
 4876	int rc;
 4877	struct pqi_queue_group *queue_group;
 4878	struct pqi_general_admin_request request;
 4879	struct pqi_general_admin_response response;
 4880
 4881	queue_group = &ctrl_info->queue_groups[group_number];
 4882
 4883	/*
 4884	 * Create IQ (Inbound Queue - host to device queue) for
 4885	 * RAID path.
 4886	 */
 4887	memset(&request, 0, sizeof(request));
 4888	request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
 4889	put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
 4890		&request.header.iu_length);
 4891	request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
 4892	put_unaligned_le16(queue_group->iq_id[RAID_PATH],
 4893		&request.data.create_operational_iq.queue_id);
 4894	put_unaligned_le64(
 4895		(u64)queue_group->iq_element_array_bus_addr[RAID_PATH],
 4896		&request.data.create_operational_iq.element_array_addr);
 4897	put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[RAID_PATH],
 4898		&request.data.create_operational_iq.ci_addr);
 4899	put_unaligned_le16(ctrl_info->num_elements_per_iq,
 4900		&request.data.create_operational_iq.num_elements);
 4901	put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
 4902		&request.data.create_operational_iq.element_length);
 4903	request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
 4904
 4905	rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
 4906		&response);
 4907	if (rc) {
 4908		dev_err(&ctrl_info->pci_dev->dev,
 4909			"error creating inbound RAID queue\n");
 4910		return rc;
 4911	}
 4912
 4913	queue_group->iq_pi[RAID_PATH] = ctrl_info->iomem_base +
 4914		PQI_DEVICE_REGISTERS_OFFSET +
 4915		get_unaligned_le64(
 4916			&response.data.create_operational_iq.iq_pi_offset);
 4917
 4918	/*
 4919	 * Create IQ (Inbound Queue - host to device queue) for
 4920	 * Advanced I/O (AIO) path.
 4921	 */
 4922	memset(&request, 0, sizeof(request));
 4923	request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
 4924	put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
 4925		&request.header.iu_length);
 4926	request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
 4927	put_unaligned_le16(queue_group->iq_id[AIO_PATH],
 4928		&request.data.create_operational_iq.queue_id);
 4929	put_unaligned_le64((u64)queue_group->
 4930		iq_element_array_bus_addr[AIO_PATH],
 4931		&request.data.create_operational_iq.element_array_addr);
 4932	put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[AIO_PATH],
 4933		&request.data.create_operational_iq.ci_addr);
 4934	put_unaligned_le16(ctrl_info->num_elements_per_iq,
 4935		&request.data.create_operational_iq.num_elements);
 4936	put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
 4937		&request.data.create_operational_iq.element_length);
 4938	request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
 4939
 4940	rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
 4941		&response);
 4942	if (rc) {
 4943		dev_err(&ctrl_info->pci_dev->dev,
 4944			"error creating inbound AIO queue\n");
 4945		return rc;
 4946	}
 4947
 4948	queue_group->iq_pi[AIO_PATH] = ctrl_info->iomem_base +
 4949		PQI_DEVICE_REGISTERS_OFFSET +
 4950		get_unaligned_le64(
 4951			&response.data.create_operational_iq.iq_pi_offset);
 4952
 4953	/*
 4954	 * Designate the 2nd IQ as the AIO path.  By default, all IQs are
 4955	 * assumed to be for RAID path I/O unless we change the queue's
 4956	 * property.
 4957	 */
 4958	memset(&request, 0, sizeof(request));
 4959	request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
 4960	put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
 4961		&request.header.iu_length);
 4962	request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CHANGE_IQ_PROPERTY;
 4963	put_unaligned_le16(queue_group->iq_id[AIO_PATH],
 4964		&request.data.change_operational_iq_properties.queue_id);
 4965	put_unaligned_le32(PQI_IQ_PROPERTY_IS_AIO_QUEUE,
 4966		&request.data.change_operational_iq_properties.vendor_specific);
 4967
 4968	rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
 4969		&response);
 4970	if (rc) {
 4971		dev_err(&ctrl_info->pci_dev->dev,
 4972			"error changing queue property\n");
 4973		return rc;
 4974	}
 4975
 4976	/*
 4977	 * Create OQ (Outbound Queue - device to host queue).
 4978	 */
 4979	memset(&request, 0, sizeof(request));
 4980	request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
 4981	put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
 4982		&request.header.iu_length);
 4983	request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
 4984	put_unaligned_le16(queue_group->oq_id,
 4985		&request.data.create_operational_oq.queue_id);
 4986	put_unaligned_le64((u64)queue_group->oq_element_array_bus_addr,
 4987		&request.data.create_operational_oq.element_array_addr);
 4988	put_unaligned_le64((u64)queue_group->oq_pi_bus_addr,
 4989		&request.data.create_operational_oq.pi_addr);
 4990	put_unaligned_le16(ctrl_info->num_elements_per_oq,
 4991		&request.data.create_operational_oq.num_elements);
 4992	put_unaligned_le16(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH / 16,
 4993		&request.data.create_operational_oq.element_length);
 4994	request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
 4995	put_unaligned_le16(queue_group->int_msg_num,
 4996		&request.data.create_operational_oq.int_msg_num);
 4997
 4998	rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
 4999		&response);
 5000	if (rc) {
 5001		dev_err(&ctrl_info->pci_dev->dev,
 5002			"error creating outbound queue\n");
 5003		return rc;
 5004	}
 5005
 5006	queue_group->oq_ci = ctrl_info->iomem_base +
 5007		PQI_DEVICE_REGISTERS_OFFSET +
 5008		get_unaligned_le64(
 5009			&response.data.create_operational_oq.oq_ci_offset);
 5010
 5011	return 0;
 5012}
 5013
 5014static int pqi_create_queues(struct pqi_ctrl_info *ctrl_info)
 5015{
 5016	int rc;
 5017	unsigned int i;
 5018
 5019	rc = pqi_create_event_queue(ctrl_info);
 5020	if (rc) {
 5021		dev_err(&ctrl_info->pci_dev->dev,
 5022			"error creating event queue\n");
 5023		return rc;
 5024	}
 5025
 5026	for (i = 0; i < ctrl_info->num_queue_groups; i++) {
 5027		rc = pqi_create_queue_group(ctrl_info, i);
 5028		if (rc) {
 5029			dev_err(&ctrl_info->pci_dev->dev,
 5030				"error creating queue group number %u/%u\n",
 5031				i, ctrl_info->num_queue_groups);
 5032			return rc;
 5033		}
 5034	}
 5035
 5036	return 0;
 5037}
 5038
 5039#define PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH	\
 5040	struct_size_t(struct pqi_event_config,  descriptors, PQI_MAX_EVENT_DESCRIPTORS)
 5041
 5042static int pqi_configure_events(struct pqi_ctrl_info *ctrl_info,
 5043	bool enable_events)
 5044{
 5045	int rc;
 5046	unsigned int i;
 5047	struct pqi_event_config *event_config;
 5048	struct pqi_event_descriptor *event_descriptor;
 5049	struct pqi_general_management_request request;
 5050
 5051	event_config = kmalloc(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
 5052		GFP_KERNEL);
 5053	if (!event_config)
 5054		return -ENOMEM;
 5055
 5056	memset(&request, 0, sizeof(request));
 5057
 5058	request.header.iu_type = PQI_REQUEST_IU_REPORT_VENDOR_EVENT_CONFIG;
 5059	put_unaligned_le16(offsetof(struct pqi_general_management_request,
 5060		data.report_event_configuration.sg_descriptors[1]) -
 5061		PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
 5062	put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
 5063		&request.data.report_event_configuration.buffer_length);
 5064
 5065	rc = pqi_map_single(ctrl_info->pci_dev,
 5066		request.data.report_event_configuration.sg_descriptors,
 5067		event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
 5068		DMA_FROM_DEVICE);
 5069	if (rc)
 5070		goto out;
 5071
 5072	rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, NULL);
 5073
 5074	pqi_pci_unmap(ctrl_info->pci_dev,
 5075		request.data.report_event_configuration.sg_descriptors, 1,
 5076		DMA_FROM_DEVICE);
 5077
 5078	if (rc)
 5079		goto out;
 5080
 5081	for (i = 0; i < event_config->num_event_descriptors; i++) {
 5082		event_descriptor = &event_config->descriptors[i];
 5083		if (enable_events &&
 5084			pqi_is_supported_event(event_descriptor->event_type))
 5085				put_unaligned_le16(ctrl_info->event_queue.oq_id,
 5086					&event_descriptor->oq_id);
 5087		else
 5088			put_unaligned_le16(0, &event_descriptor->oq_id);
 5089	}
 5090
 5091	memset(&request, 0, sizeof(request));
 5092
 5093	request.header.iu_type = PQI_REQUEST_IU_SET_VENDOR_EVENT_CONFIG;
 5094	put_unaligned_le16(offsetof(struct pqi_general_management_request,
 5095		data.report_event_configuration.sg_descriptors[1]) -
 5096		PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
 5097	put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
 5098		&request.data.report_event_configuration.buffer_length);
 5099
 5100	rc = pqi_map_single(ctrl_info->pci_dev,
 5101		request.data.report_event_configuration.sg_descriptors,
 5102		event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
 5103		DMA_TO_DEVICE);
 5104	if (rc)
 5105		goto out;
 5106
 5107	rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, NULL);
 5108
 5109	pqi_pci_unmap(ctrl_info->pci_dev,
 5110		request.data.report_event_configuration.sg_descriptors, 1,
 5111		DMA_TO_DEVICE);
 5112
 5113out:
 5114	kfree(event_config);
 5115
 5116	return rc;
 5117}
 5118
 5119static inline int pqi_enable_events(struct pqi_ctrl_info *ctrl_info)
 5120{
 5121	return pqi_configure_events(ctrl_info, true);
 5122}
 5123
 5124static void pqi_free_all_io_requests(struct pqi_ctrl_info *ctrl_info)
 5125{
 5126	unsigned int i;
 5127	struct device *dev;
 5128	size_t sg_chain_buffer_length;
 5129	struct pqi_io_request *io_request;
 5130
 5131	if (!ctrl_info->io_request_pool)
 5132		return;
 5133
 5134	dev = &ctrl_info->pci_dev->dev;
 5135	sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
 5136	io_request = ctrl_info->io_request_pool;
 5137
 5138	for (i = 0; i < ctrl_info->max_io_slots; i++) {
 5139		kfree(io_request->iu);
 5140		if (!io_request->sg_chain_buffer)
 5141			break;
 5142		dma_free_coherent(dev, sg_chain_buffer_length,
 5143			io_request->sg_chain_buffer,
 5144			io_request->sg_chain_buffer_dma_handle);
 5145		io_request++;
 5146	}
 5147
 5148	kfree(ctrl_info->io_request_pool);
 5149	ctrl_info->io_request_pool = NULL;
 5150}
 5151
 5152static inline int pqi_alloc_error_buffer(struct pqi_ctrl_info *ctrl_info)
 5153{
 5154	ctrl_info->error_buffer = dma_alloc_coherent(&ctrl_info->pci_dev->dev,
 5155				     ctrl_info->error_buffer_length,
 5156				     &ctrl_info->error_buffer_dma_handle,
 5157				     GFP_KERNEL);
 5158	if (!ctrl_info->error_buffer)
 5159		return -ENOMEM;
 5160
 5161	return 0;
 5162}
 5163
 5164static int pqi_alloc_io_resources(struct pqi_ctrl_info *ctrl_info)
 5165{
 5166	unsigned int i;
 5167	void *sg_chain_buffer;
 5168	size_t sg_chain_buffer_length;
 5169	dma_addr_t sg_chain_buffer_dma_handle;
 5170	struct device *dev;
 5171	struct pqi_io_request *io_request;
 5172
 5173	ctrl_info->io_request_pool = kcalloc(ctrl_info->max_io_slots,
 5174		sizeof(ctrl_info->io_request_pool[0]), GFP_KERNEL);
 5175
 5176	if (!ctrl_info->io_request_pool) {
 5177		dev_err(&ctrl_info->pci_dev->dev,
 5178			"failed to allocate I/O request pool\n");
 5179		goto error;
 5180	}
 5181
 5182	dev = &ctrl_info->pci_dev->dev;
 5183	sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
 5184	io_request = ctrl_info->io_request_pool;
 5185
 5186	for (i = 0; i < ctrl_info->max_io_slots; i++) {
 5187		io_request->iu = kmalloc(ctrl_info->max_inbound_iu_length, GFP_KERNEL);
 5188
 5189		if (!io_request->iu) {
 5190			dev_err(&ctrl_info->pci_dev->dev,
 5191				"failed to allocate IU buffers\n");
 5192			goto error;
 5193		}
 5194
 5195		sg_chain_buffer = dma_alloc_coherent(dev,
 5196			sg_chain_buffer_length, &sg_chain_buffer_dma_handle,
 5197			GFP_KERNEL);
 5198
 5199		if (!sg_chain_buffer) {
 5200			dev_err(&ctrl_info->pci_dev->dev,
 5201				"failed to allocate PQI scatter-gather chain buffers\n");
 5202			goto error;
 5203		}
 5204
 5205		io_request->index = i;
 5206		io_request->sg_chain_buffer = sg_chain_buffer;
 5207		io_request->sg_chain_buffer_dma_handle = sg_chain_buffer_dma_handle;
 5208		io_request++;
 5209	}
 5210
 5211	return 0;
 5212
 5213error:
 5214	pqi_free_all_io_requests(ctrl_info);
 5215
 5216	return -ENOMEM;
 5217}
 5218
 5219/*
 5220 * Calculate required resources that are sized based on max. outstanding
 5221 * requests and max. transfer size.
 5222 */
 5223
 5224static void pqi_calculate_io_resources(struct pqi_ctrl_info *ctrl_info)
 5225{
 5226	u32 max_transfer_size;
 5227	u32 max_sg_entries;
 5228
 5229	ctrl_info->scsi_ml_can_queue =
 5230		ctrl_info->max_outstanding_requests - PQI_RESERVED_IO_SLOTS;
 5231	ctrl_info->max_io_slots = ctrl_info->max_outstanding_requests;
 5232
 5233	ctrl_info->error_buffer_length =
 5234		ctrl_info->max_io_slots * PQI_ERROR_BUFFER_ELEMENT_LENGTH;
 5235
 5236	if (reset_devices)
 5237		max_transfer_size = min(ctrl_info->max_transfer_size,
 5238			PQI_MAX_TRANSFER_SIZE_KDUMP);
 5239	else
 5240		max_transfer_size = min(ctrl_info->max_transfer_size,
 5241			PQI_MAX_TRANSFER_SIZE);
 5242
 5243	max_sg_entries = max_transfer_size / PAGE_SIZE;
 5244
 5245	/* +1 to cover when the buffer is not page-aligned. */
 5246	max_sg_entries++;
 5247
 5248	max_sg_entries = min(ctrl_info->max_sg_entries, max_sg_entries);
 5249
 5250	max_transfer_size = (max_sg_entries - 1) * PAGE_SIZE;
 5251
 5252	ctrl_info->sg_chain_buffer_length =
 5253		(max_sg_entries * sizeof(struct pqi_sg_descriptor)) +
 5254		PQI_EXTRA_SGL_MEMORY;
 5255	ctrl_info->sg_tablesize = max_sg_entries;
 5256	ctrl_info->max_sectors = max_transfer_size / 512;
 5257}
 5258
 5259static void pqi_calculate_queue_resources(struct pqi_ctrl_info *ctrl_info)
 5260{
 5261	int num_queue_groups;
 5262	u16 num_elements_per_iq;
 5263	u16 num_elements_per_oq;
 5264
 5265	if (reset_devices) {
 5266		num_queue_groups = 1;
 5267	} else {
 5268		int num_cpus;
 5269		int max_queue_groups;
 5270
 5271		max_queue_groups = min(ctrl_info->max_inbound_queues / 2,
 5272			ctrl_info->max_outbound_queues - 1);
 5273		max_queue_groups = min(max_queue_groups, PQI_MAX_QUEUE_GROUPS);
 5274
 5275		num_cpus = num_online_cpus();
 5276		num_queue_groups = min(num_cpus, ctrl_info->max_msix_vectors);
 5277		num_queue_groups = min(num_queue_groups, max_queue_groups);
 5278	}
 5279
 5280	ctrl_info->num_queue_groups = num_queue_groups;
 5281
 5282	/*
 5283	 * Make sure that the max. inbound IU length is an even multiple
 5284	 * of our inbound element length.
 5285	 */
 5286	ctrl_info->max_inbound_iu_length =
 5287		(ctrl_info->max_inbound_iu_length_per_firmware /
 5288		PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) *
 5289		PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
 5290
 5291	num_elements_per_iq =
 5292		(ctrl_info->max_inbound_iu_length /
 5293		PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
 5294
 5295	/* Add one because one element in each queue is unusable. */
 5296	num_elements_per_iq++;
 5297
 5298	num_elements_per_iq = min(num_elements_per_iq,
 5299		ctrl_info->max_elements_per_iq);
 5300
 5301	num_elements_per_oq = ((num_elements_per_iq - 1) * 2) + 1;
 5302	num_elements_per_oq = min(num_elements_per_oq,
 5303		ctrl_info->max_elements_per_oq);
 5304
 5305	ctrl_info->num_elements_per_iq = num_elements_per_iq;
 5306	ctrl_info->num_elements_per_oq = num_elements_per_oq;
 5307
 5308	ctrl_info->max_sg_per_iu =
 5309		((ctrl_info->max_inbound_iu_length -
 5310		PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) /
 5311		sizeof(struct pqi_sg_descriptor)) +
 5312		PQI_MAX_EMBEDDED_SG_DESCRIPTORS;
 5313
 5314	ctrl_info->max_sg_per_r56_iu =
 5315		((ctrl_info->max_inbound_iu_length -
 5316		PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) /
 5317		sizeof(struct pqi_sg_descriptor)) +
 5318		PQI_MAX_EMBEDDED_R56_SG_DESCRIPTORS;
 5319}
 5320
 5321static inline void pqi_set_sg_descriptor(struct pqi_sg_descriptor *sg_descriptor,
 5322	struct scatterlist *sg)
 5323{
 5324	u64 address = (u64)sg_dma_address(sg);
 5325	unsigned int length = sg_dma_len(sg);
 5326
 5327	put_unaligned_le64(address, &sg_descriptor->address);
 5328	put_unaligned_le32(length, &sg_descriptor->length);
 5329	put_unaligned_le32(0, &sg_descriptor->flags);
 5330}
 5331
 5332static unsigned int pqi_build_sg_list(struct pqi_sg_descriptor *sg_descriptor,
 5333	struct scatterlist *sg, int sg_count, struct pqi_io_request *io_request,
 5334	int max_sg_per_iu, bool *chained)
 5335{
 5336	int i;
 5337	unsigned int num_sg_in_iu;
 5338
 5339	*chained = false;
 5340	i = 0;
 5341	num_sg_in_iu = 0;
 5342	max_sg_per_iu--;	/* Subtract 1 to leave room for chain marker. */
 5343
 5344	while (1) {
 5345		pqi_set_sg_descriptor(sg_descriptor, sg);
 5346		if (!*chained)
 5347			num_sg_in_iu++;
 5348		i++;
 5349		if (i == sg_count)
 5350			break;
 5351		sg_descriptor++;
 5352		if (i == max_sg_per_iu) {
 5353			put_unaligned_le64((u64)io_request->sg_chain_buffer_dma_handle,
 5354				&sg_descriptor->address);
 5355			put_unaligned_le32((sg_count - num_sg_in_iu) * sizeof(*sg_descriptor),
 5356				&sg_descriptor->length);
 5357			put_unaligned_le32(CISS_SG_CHAIN, &sg_descriptor->flags);
 5358			*chained = true;
 5359			num_sg_in_iu++;
 5360			sg_descriptor = io_request->sg_chain_buffer;
 5361		}
 5362		sg = sg_next(sg);
 5363	}
 5364
 5365	put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
 5366
 5367	return num_sg_in_iu;
 5368}
 5369
 5370static int pqi_build_raid_sg_list(struct pqi_ctrl_info *ctrl_info,
 5371	struct pqi_raid_path_request *request, struct scsi_cmnd *scmd,
 5372	struct pqi_io_request *io_request)
 5373{
 5374	u16 iu_length;
 5375	int sg_count;
 5376	bool chained;
 5377	unsigned int num_sg_in_iu;
 5378	struct scatterlist *sg;
 5379	struct pqi_sg_descriptor *sg_descriptor;
 5380
 5381	sg_count = scsi_dma_map(scmd);
 5382	if (sg_count < 0)
 5383		return sg_count;
 5384
 5385	iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
 5386		PQI_REQUEST_HEADER_LENGTH;
 5387
 5388	if (sg_count == 0)
 5389		goto out;
 5390
 5391	sg = scsi_sglist(scmd);
 5392	sg_descriptor = request->sg_descriptors;
 5393
 5394	num_sg_in_iu = pqi_build_sg_list(sg_descriptor, sg, sg_count, io_request,
 5395		ctrl_info->max_sg_per_iu, &chained);
 5396
 5397	request->partial = chained;
 5398	iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
 5399
 5400out:
 5401	put_unaligned_le16(iu_length, &request->header.iu_length);
 5402
 5403	return 0;
 5404}
 5405
 5406static int pqi_build_aio_r1_sg_list(struct pqi_ctrl_info *ctrl_info,
 5407	struct pqi_aio_r1_path_request *request, struct scsi_cmnd *scmd,
 5408	struct pqi_io_request *io_request)
 5409{
 5410	u16 iu_length;
 5411	int sg_count;
 5412	bool chained;
 5413	unsigned int num_sg_in_iu;
 5414	struct scatterlist *sg;
 5415	struct pqi_sg_descriptor *sg_descriptor;
 5416
 5417	sg_count = scsi_dma_map(scmd);
 5418	if (sg_count < 0)
 5419		return sg_count;
 5420
 5421	iu_length = offsetof(struct pqi_aio_r1_path_request, sg_descriptors) -
 5422		PQI_REQUEST_HEADER_LENGTH;
 5423	num_sg_in_iu = 0;
 5424
 5425	if (sg_count == 0)
 5426		goto out;
 5427
 5428	sg = scsi_sglist(scmd);
 5429	sg_descriptor = request->sg_descriptors;
 5430
 5431	num_sg_in_iu = pqi_build_sg_list(sg_descriptor, sg, sg_count, io_request,
 5432		ctrl_info->max_sg_per_iu, &chained);
 5433
 5434	request->partial = chained;
 5435	iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
 5436
 5437out:
 5438	put_unaligned_le16(iu_length, &request->header.iu_length);
 5439	request->num_sg_descriptors = num_sg_in_iu;
 5440
 5441	return 0;
 5442}
 5443
 5444static int pqi_build_aio_r56_sg_list(struct pqi_ctrl_info *ctrl_info,
 5445	struct pqi_aio_r56_path_request *request, struct scsi_cmnd *scmd,
 5446	struct pqi_io_request *io_request)
 5447{
 5448	u16 iu_length;
 5449	int sg_count;
 5450	bool chained;
 5451	unsigned int num_sg_in_iu;
 5452	struct scatterlist *sg;
 5453	struct pqi_sg_descriptor *sg_descriptor;
 5454
 5455	sg_count = scsi_dma_map(scmd);
 5456	if (sg_count < 0)
 5457		return sg_count;
 5458
 5459	iu_length = offsetof(struct pqi_aio_r56_path_request, sg_descriptors) -
 5460		PQI_REQUEST_HEADER_LENGTH;
 5461	num_sg_in_iu = 0;
 5462
 5463	if (sg_count != 0) {
 5464		sg = scsi_sglist(scmd);
 5465		sg_descriptor = request->sg_descriptors;
 5466
 5467		num_sg_in_iu = pqi_build_sg_list(sg_descriptor, sg, sg_count, io_request,
 5468			ctrl_info->max_sg_per_r56_iu, &chained);
 5469
 5470		request->partial = chained;
 5471		iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
 5472	}
 5473
 5474	put_unaligned_le16(iu_length, &request->header.iu_length);
 5475	request->num_sg_descriptors = num_sg_in_iu;
 5476
 5477	return 0;
 5478}
 5479
 5480static int pqi_build_aio_sg_list(struct pqi_ctrl_info *ctrl_info,
 5481	struct pqi_aio_path_request *request, struct scsi_cmnd *scmd,
 5482	struct pqi_io_request *io_request)
 5483{
 5484	u16 iu_length;
 5485	int sg_count;
 5486	bool chained;
 5487	unsigned int num_sg_in_iu;
 5488	struct scatterlist *sg;
 5489	struct pqi_sg_descriptor *sg_descriptor;
 5490
 5491	sg_count = scsi_dma_map(scmd);
 5492	if (sg_count < 0)
 5493		return sg_count;
 5494
 5495	iu_length = offsetof(struct pqi_aio_path_request, sg_descriptors) -
 5496		PQI_REQUEST_HEADER_LENGTH;
 5497	num_sg_in_iu = 0;
 5498
 5499	if (sg_count == 0)
 5500		goto out;
 5501
 5502	sg = scsi_sglist(scmd);
 5503	sg_descriptor = request->sg_descriptors;
 5504
 5505	num_sg_in_iu = pqi_build_sg_list(sg_descriptor, sg, sg_count, io_request,
 5506		ctrl_info->max_sg_per_iu, &chained);
 5507
 5508	request->partial = chained;
 5509	iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
 5510
 5511out:
 5512	put_unaligned_le16(iu_length, &request->header.iu_length);
 5513	request->num_sg_descriptors = num_sg_in_iu;
 5514
 5515	return 0;
 5516}
 5517
 5518static void pqi_raid_io_complete(struct pqi_io_request *io_request,
 5519	void *context)
 5520{
 5521	struct scsi_cmnd *scmd;
 5522
 5523	scmd = io_request->scmd;
 5524	pqi_free_io_request(io_request);
 5525	scsi_dma_unmap(scmd);
 5526	pqi_scsi_done(scmd);
 5527}
 5528
 5529static int pqi_raid_submit_io(struct pqi_ctrl_info *ctrl_info,
 5530	struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
 5531	struct pqi_queue_group *queue_group, bool io_high_prio)
 5532{
 5533	int rc;
 5534	size_t cdb_length;
 5535	struct pqi_io_request *io_request;
 5536	struct pqi_raid_path_request *request;
 5537
 5538	io_request = pqi_alloc_io_request(ctrl_info, scmd);
 5539	if (!io_request)
 5540		return SCSI_MLQUEUE_HOST_BUSY;
 5541
 5542	io_request->io_complete_callback = pqi_raid_io_complete;
 5543	io_request->scmd = scmd;
 5544
 5545	request = io_request->iu;
 5546	memset(request, 0, offsetof(struct pqi_raid_path_request, sg_descriptors));
 5547
 5548	request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
 5549	put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
 5550	request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
 5551	request->command_priority = io_high_prio;
 5552	put_unaligned_le16(io_request->index, &request->request_id);
 5553	request->error_index = request->request_id;
 5554	memcpy(request->lun_number, device->scsi3addr, sizeof(request->lun_number));
 5555	request->ml_device_lun_number = (u8)scmd->device->lun;
 5556
 5557	cdb_length = min_t(size_t, scmd->cmd_len, sizeof(request->cdb));
 5558	memcpy(request->cdb, scmd->cmnd, cdb_length);
 5559
 5560	switch (cdb_length) {
 5561	case 6:
 5562	case 10:
 5563	case 12:
 5564	case 16:
 5565		request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
 5566		break;
 5567	case 20:
 5568		request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_4;
 5569		break;
 5570	case 24:
 5571		request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_8;
 5572		break;
 5573	case 28:
 5574		request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_12;
 5575		break;
 5576	case 32:
 5577	default:
 5578		request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_16;
 5579		break;
 5580	}
 5581
 5582	switch (scmd->sc_data_direction) {
 5583	case DMA_FROM_DEVICE:
 5584		request->data_direction = SOP_READ_FLAG;
 5585		break;
 5586	case DMA_TO_DEVICE:
 5587		request->data_direction = SOP_WRITE_FLAG;
 5588		break;
 5589	case DMA_NONE:
 5590		request->data_direction = SOP_NO_DIRECTION_FLAG;
 5591		break;
 5592	case DMA_BIDIRECTIONAL:
 5593		request->data_direction = SOP_BIDIRECTIONAL;
 5594		break;
 5595	default:
 5596		dev_err(&ctrl_info->pci_dev->dev,
 5597			"unknown data direction: %d\n",
 5598			scmd->sc_data_direction);
 5599		break;
 5600	}
 5601
 5602	rc = pqi_build_raid_sg_list(ctrl_info, request, scmd, io_request);
 5603	if (rc) {
 5604		pqi_free_io_request(io_request);
 5605		return SCSI_MLQUEUE_HOST_BUSY;
 5606	}
 5607
 5608	pqi_start_io(ctrl_info, queue_group, RAID_PATH, io_request);
 5609
 5610	return 0;
 5611}
 5612
 5613static inline int pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
 5614	struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
 5615	struct pqi_queue_group *queue_group)
 5616{
 5617	bool io_high_prio;
 5618
 5619	io_high_prio = pqi_is_io_high_priority(device, scmd);
 5620
 5621	return pqi_raid_submit_io(ctrl_info, device, scmd, queue_group, io_high_prio);
 5622}
 5623
 5624static bool pqi_raid_bypass_retry_needed(struct pqi_io_request *io_request)
 5625{
 5626	struct scsi_cmnd *scmd;
 5627	struct pqi_scsi_dev *device;
 5628	struct pqi_ctrl_info *ctrl_info;
 5629
 5630	if (!io_request->raid_bypass)
 5631		return false;
 5632
 5633	scmd = io_request->scmd;
 5634	if ((scmd->result & 0xff) == SAM_STAT_GOOD)
 5635		return false;
 5636	if (host_byte(scmd->result) == DID_NO_CONNECT)
 5637		return false;
 5638
 5639	device = scmd->device->hostdata;
 5640	if (pqi_device_offline(device) || pqi_device_in_remove(device))
 5641		return false;
 5642
 5643	ctrl_info = shost_to_hba(scmd->device->host);
 5644	if (pqi_ctrl_offline(ctrl_info))
 5645		return false;
 5646
 5647	return true;
 5648}
 5649
 5650static void pqi_aio_io_complete(struct pqi_io_request *io_request,
 5651	void *context)
 5652{
 5653	struct scsi_cmnd *scmd;
 5654
 5655	scmd = io_request->scmd;
 5656	scsi_dma_unmap(scmd);
 5657	if (io_request->status == -EAGAIN || pqi_raid_bypass_retry_needed(io_request)) {
 5658		set_host_byte(scmd, DID_IMM_RETRY);
 5659		pqi_cmd_priv(scmd)->this_residual++;
 5660	}
 5661
 5662	pqi_free_io_request(io_request);
 5663	pqi_scsi_done(scmd);
 5664}
 5665
 5666static inline int pqi_aio_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
 5667	struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
 5668	struct pqi_queue_group *queue_group)
 5669{
 5670	bool io_high_prio;
 5671
 5672	io_high_prio = pqi_is_io_high_priority(device, scmd);
 5673
 5674	return pqi_aio_submit_io(ctrl_info, scmd, device->aio_handle,
 5675		scmd->cmnd, scmd->cmd_len, queue_group, NULL,
 5676		false, io_high_prio);
 5677}
 5678
 5679static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
 5680	struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
 5681	unsigned int cdb_length, struct pqi_queue_group *queue_group,
 5682	struct pqi_encryption_info *encryption_info, bool raid_bypass,
 5683	bool io_high_prio)
 5684{
 5685	int rc;
 5686	struct pqi_io_request *io_request;
 5687	struct pqi_aio_path_request *request;
 5688
 5689	io_request = pqi_alloc_io_request(ctrl_info, scmd);
 5690	if (!io_request)
 5691		return SCSI_MLQUEUE_HOST_BUSY;
 5692
 5693	io_request->io_complete_callback = pqi_aio_io_complete;
 5694	io_request->scmd = scmd;
 5695	io_request->raid_bypass = raid_bypass;
 5696
 5697	request = io_request->iu;
 5698	memset(request, 0, offsetof(struct pqi_aio_path_request, sg_descriptors));
 5699
 5700	request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_IO;
 5701	put_unaligned_le32(aio_handle, &request->nexus_id);
 5702	put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
 5703	request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
 5704	request->command_priority = io_high_prio;
 5705	put_unaligned_le16(io_request->index, &request->request_id);
 5706	request->error_index = request->request_id;
 5707	if (!raid_bypass && ctrl_info->multi_lun_device_supported)
 5708		put_unaligned_le64(scmd->device->lun << 8, &request->lun_number);
 5709	if (cdb_length > sizeof(request->cdb))
 5710		cdb_length = sizeof(request->cdb);
 5711	request->cdb_length = cdb_length;
 5712	memcpy(request->cdb, cdb, cdb_length);
 5713
 5714	switch (scmd->sc_data_direction) {
 5715	case DMA_TO_DEVICE:
 5716		request->data_direction = SOP_READ_FLAG;
 5717		break;
 5718	case DMA_FROM_DEVICE:
 5719		request->data_direction = SOP_WRITE_FLAG;
 5720		break;
 5721	case DMA_NONE:
 5722		request->data_direction = SOP_NO_DIRECTION_FLAG;
 5723		break;
 5724	case DMA_BIDIRECTIONAL:
 5725		request->data_direction = SOP_BIDIRECTIONAL;
 5726		break;
 5727	default:
 5728		dev_err(&ctrl_info->pci_dev->dev,
 5729			"unknown data direction: %d\n",
 5730			scmd->sc_data_direction);
 5731		break;
 5732	}
 5733
 5734	if (encryption_info) {
 5735		request->encryption_enable = true;
 5736		put_unaligned_le16(encryption_info->data_encryption_key_index,
 5737			&request->data_encryption_key_index);
 5738		put_unaligned_le32(encryption_info->encrypt_tweak_lower,
 5739			&request->encrypt_tweak_lower);
 5740		put_unaligned_le32(encryption_info->encrypt_tweak_upper,
 5741			&request->encrypt_tweak_upper);
 5742	}
 5743
 5744	rc = pqi_build_aio_sg_list(ctrl_info, request, scmd, io_request);
 5745	if (rc) {
 5746		pqi_free_io_request(io_request);
 5747		return SCSI_MLQUEUE_HOST_BUSY;
 5748	}
 5749
 5750	pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request);
 5751
 5752	return 0;
 5753}
 5754
 5755static  int pqi_aio_submit_r1_write_io(struct pqi_ctrl_info *ctrl_info,
 5756	struct scsi_cmnd *scmd, struct pqi_queue_group *queue_group,
 5757	struct pqi_encryption_info *encryption_info, struct pqi_scsi_dev *device,
 5758	struct pqi_scsi_dev_raid_map_data *rmd)
 5759{
 5760	int rc;
 5761	struct pqi_io_request *io_request;
 5762	struct pqi_aio_r1_path_request *r1_request;
 5763
 5764	io_request = pqi_alloc_io_request(ctrl_info, scmd);
 5765	if (!io_request)
 5766		return SCSI_MLQUEUE_HOST_BUSY;
 5767
 5768	io_request->io_complete_callback = pqi_aio_io_complete;
 5769	io_request->scmd = scmd;
 5770	io_request->raid_bypass = true;
 5771
 5772	r1_request = io_request->iu;
 5773	memset(r1_request, 0, offsetof(struct pqi_aio_r1_path_request, sg_descriptors));
 5774
 5775	r1_request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_RAID1_IO;
 5776	put_unaligned_le16(*(u16 *)device->scsi3addr & 0x3fff, &r1_request->volume_id);
 5777	r1_request->num_drives = rmd->num_it_nexus_entries;
 5778	put_unaligned_le32(rmd->it_nexus[0], &r1_request->it_nexus_1);
 5779	put_unaligned_le32(rmd->it_nexus[1], &r1_request->it_nexus_2);
 5780	if (rmd->num_it_nexus_entries == 3)
 5781		put_unaligned_le32(rmd->it_nexus[2], &r1_request->it_nexus_3);
 5782
 5783	put_unaligned_le32(scsi_bufflen(scmd), &r1_request->data_length);
 5784	r1_request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
 5785	put_unaligned_le16(io_request->index, &r1_request->request_id);
 5786	r1_request->error_index = r1_request->request_id;
 5787	if (rmd->cdb_length > sizeof(r1_request->cdb))
 5788		rmd->cdb_length = sizeof(r1_request->cdb);
 5789	r1_request->cdb_length = rmd->cdb_length;
 5790	memcpy(r1_request->cdb, rmd->cdb, rmd->cdb_length);
 5791
 5792	/* The direction is always write. */
 5793	r1_request->data_direction = SOP_READ_FLAG;
 5794
 5795	if (encryption_info) {
 5796		r1_request->encryption_enable = true;
 5797		put_unaligned_le16(encryption_info->data_encryption_key_index,
 5798				&r1_request->data_encryption_key_index);
 5799		put_unaligned_le32(encryption_info->encrypt_tweak_lower,
 5800				&r1_request->encrypt_tweak_lower);
 5801		put_unaligned_le32(encryption_info->encrypt_tweak_upper,
 5802				&r1_request->encrypt_tweak_upper);
 5803	}
 5804
 5805	rc = pqi_build_aio_r1_sg_list(ctrl_info, r1_request, scmd, io_request);
 5806	if (rc) {
 5807		pqi_free_io_request(io_request);
 5808		return SCSI_MLQUEUE_HOST_BUSY;
 5809	}
 5810
 5811	pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request);
 5812
 5813	return 0;
 5814}
 5815
 5816static int pqi_aio_submit_r56_write_io(struct pqi_ctrl_info *ctrl_info,
 5817	struct scsi_cmnd *scmd, struct pqi_queue_group *queue_group,
 5818	struct pqi_encryption_info *encryption_info, struct pqi_scsi_dev *device,
 5819	struct pqi_scsi_dev_raid_map_data *rmd)
 5820{
 5821	int rc;
 5822	struct pqi_io_request *io_request;
 5823	struct pqi_aio_r56_path_request *r56_request;
 5824
 5825	io_request = pqi_alloc_io_request(ctrl_info, scmd);
 5826	if (!io_request)
 5827		return SCSI_MLQUEUE_HOST_BUSY;
 5828	io_request->io_complete_callback = pqi_aio_io_complete;
 5829	io_request->scmd = scmd;
 5830	io_request->raid_bypass = true;
 5831
 5832	r56_request = io_request->iu;
 5833	memset(r56_request, 0, offsetof(struct pqi_aio_r56_path_request, sg_descriptors));
 5834
 5835	if (device->raid_level == SA_RAID_5 || device->raid_level == SA_RAID_51)
 5836		r56_request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_RAID5_IO;
 5837	else
 5838		r56_request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_RAID6_IO;
 5839
 5840	put_unaligned_le16(*(u16 *)device->scsi3addr & 0x3fff, &r56_request->volume_id);
 5841	put_unaligned_le32(rmd->aio_handle, &r56_request->data_it_nexus);
 5842	put_unaligned_le32(rmd->p_parity_it_nexus, &r56_request->p_parity_it_nexus);
 5843	if (rmd->raid_level == SA_RAID_6) {
 5844		put_unaligned_le32(rmd->q_parity_it_nexus, &r56_request->q_parity_it_nexus);
 5845		r56_request->xor_multiplier = rmd->xor_mult;
 5846	}
 5847	put_unaligned_le32(scsi_bufflen(scmd), &r56_request->data_length);
 5848	r56_request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
 5849	put_unaligned_le64(rmd->row, &r56_request->row);
 5850
 5851	put_unaligned_le16(io_request->index, &r56_request->request_id);
 5852	r56_request->error_index = r56_request->request_id;
 5853
 5854	if (rmd->cdb_length > sizeof(r56_request->cdb))
 5855		rmd->cdb_length = sizeof(r56_request->cdb);
 5856	r56_request->cdb_length = rmd->cdb_length;
 5857	memcpy(r56_request->cdb, rmd->cdb, rmd->cdb_length);
 5858
 5859	/* The direction is always write. */
 5860	r56_request->data_direction = SOP_READ_FLAG;
 5861
 5862	if (encryption_info) {
 5863		r56_request->encryption_enable = true;
 5864		put_unaligned_le16(encryption_info->data_encryption_key_index,
 5865				&r56_request->data_encryption_key_index);
 5866		put_unaligned_le32(encryption_info->encrypt_tweak_lower,
 5867				&r56_request->encrypt_tweak_lower);
 5868		put_unaligned_le32(encryption_info->encrypt_tweak_upper,
 5869				&r56_request->encrypt_tweak_upper);
 5870	}
 5871
 5872	rc = pqi_build_aio_r56_sg_list(ctrl_info, r56_request, scmd, io_request);
 5873	if (rc) {
 5874		pqi_free_io_request(io_request);
 5875		return SCSI_MLQUEUE_HOST_BUSY;
 5876	}
 5877
 5878	pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request);
 5879
 5880	return 0;
 5881}
 5882
 5883static inline u16 pqi_get_hw_queue(struct pqi_ctrl_info *ctrl_info,
 5884	struct scsi_cmnd *scmd)
 5885{
 5886	/*
 5887	 * We are setting host_tagset = 1 during init.
 5888	 */
 5889	return blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(scsi_cmd_to_rq(scmd)));
 5890}
 5891
 5892static inline bool pqi_is_bypass_eligible_request(struct scsi_cmnd *scmd)
 5893{
 5894	if (blk_rq_is_passthrough(scsi_cmd_to_rq(scmd)))
 5895		return false;
 5896
 5897	return pqi_cmd_priv(scmd)->this_residual == 0;
 5898}
 5899
 5900/*
 5901 * This function gets called just before we hand the completed SCSI request
 5902 * back to the SML.
 5903 */
 5904
 5905void pqi_prep_for_scsi_done(struct scsi_cmnd *scmd)
 5906{
 5907	struct pqi_scsi_dev *device;
 5908	struct completion *wait;
 5909
 5910	if (!scmd->device) {
 5911		set_host_byte(scmd, DID_NO_CONNECT);
 5912		return;
 5913	}
 5914
 5915	device = scmd->device->hostdata;
 5916	if (!device) {
 5917		set_host_byte(scmd, DID_NO_CONNECT);
 5918		return;
 5919	}
 5920
 5921	atomic_dec(&device->scsi_cmds_outstanding[scmd->device->lun]);
 5922
 5923	wait = (struct completion *)xchg(&scmd->host_scribble, NULL);
 5924	if (wait != PQI_NO_COMPLETION)
 5925		complete(wait);
 5926}
 5927
 5928static bool pqi_is_parity_write_stream(struct pqi_ctrl_info *ctrl_info,
 5929	struct scsi_cmnd *scmd)
 5930{
 5931	u32 oldest_jiffies;
 5932	u8 lru_index;
 5933	int i;
 5934	int rc;
 5935	struct pqi_scsi_dev *device;
 5936	struct pqi_stream_data *pqi_stream_data;
 5937	struct pqi_scsi_dev_raid_map_data rmd;
 5938
 5939	if (!ctrl_info->enable_stream_detection)
 5940		return false;
 5941
 5942	rc = pqi_get_aio_lba_and_block_count(scmd, &rmd);
 5943	if (rc)
 5944		return false;
 5945
 5946	/* Check writes only. */
 5947	if (!rmd.is_write)
 5948		return false;
 5949
 5950	device = scmd->device->hostdata;
 5951
 5952	/* Check for RAID 5/6 streams. */
 5953	if (device->raid_level != SA_RAID_5 && device->raid_level != SA_RAID_6)
 5954		return false;
 5955
 5956	/*
 5957	 * If controller does not support AIO RAID{5,6} writes, need to send
 5958	 * requests down non-AIO path.
 5959	 */
 5960	if ((device->raid_level == SA_RAID_5 && !ctrl_info->enable_r5_writes) ||
 5961		(device->raid_level == SA_RAID_6 && !ctrl_info->enable_r6_writes))
 5962		return true;
 5963
 5964	lru_index = 0;
 5965	oldest_jiffies = INT_MAX;
 5966	for (i = 0; i < NUM_STREAMS_PER_LUN; i++) {
 5967		pqi_stream_data = &device->stream_data[i];
 5968		/*
 5969		 * Check for adjacent request or request is within
 5970		 * the previous request.
 5971		 */
 5972		if ((pqi_stream_data->next_lba &&
 5973			rmd.first_block >= pqi_stream_data->next_lba) &&
 5974			rmd.first_block <= pqi_stream_data->next_lba +
 5975				rmd.block_cnt) {
 5976			pqi_stream_data->next_lba = rmd.first_block +
 5977				rmd.block_cnt;
 5978			pqi_stream_data->last_accessed = jiffies;
 5979			return true;
 5980		}
 5981
 5982		/* unused entry */
 5983		if (pqi_stream_data->last_accessed == 0) {
 5984			lru_index = i;
 5985			break;
 5986		}
 5987
 5988		/* Find entry with oldest last accessed time. */
 5989		if (pqi_stream_data->last_accessed <= oldest_jiffies) {
 5990			oldest_jiffies = pqi_stream_data->last_accessed;
 5991			lru_index = i;
 5992		}
 5993	}
 5994
 5995	/* Set LRU entry. */
 5996	pqi_stream_data = &device->stream_data[lru_index];
 5997	pqi_stream_data->last_accessed = jiffies;
 5998	pqi_stream_data->next_lba = rmd.first_block + rmd.block_cnt;
 5999
 6000	return false;
 6001}
 6002
 6003static int pqi_scsi_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
 6004{
 6005	int rc;
 6006	struct pqi_ctrl_info *ctrl_info;
 6007	struct pqi_scsi_dev *device;
 6008	u16 hw_queue;
 6009	struct pqi_queue_group *queue_group;
 6010	bool raid_bypassed;
 6011	u8 lun;
 6012
 6013	scmd->host_scribble = PQI_NO_COMPLETION;
 6014
 6015	device = scmd->device->hostdata;
 6016
 6017	if (!device) {
 6018		set_host_byte(scmd, DID_NO_CONNECT);
 6019		pqi_scsi_done(scmd);
 6020		return 0;
 6021	}
 6022
 6023	lun = (u8)scmd->device->lun;
 6024
 6025	atomic_inc(&device->scsi_cmds_outstanding[lun]);
 6026
 6027	ctrl_info = shost_to_hba(shost);
 6028
 6029	if (pqi_ctrl_offline(ctrl_info) || pqi_device_in_remove(device)) {
 6030		set_host_byte(scmd, DID_NO_CONNECT);
 6031		pqi_scsi_done(scmd);
 6032		return 0;
 6033	}
 6034
 6035	if (pqi_ctrl_blocked(ctrl_info) || pqi_device_in_reset(device, lun)) {
 6036		rc = SCSI_MLQUEUE_HOST_BUSY;
 6037		goto out;
 6038	}
 6039
 6040	/*
 6041	 * This is necessary because the SML doesn't zero out this field during
 6042	 * error recovery.
 6043	 */
 6044	scmd->result = 0;
 6045
 6046	hw_queue = pqi_get_hw_queue(ctrl_info, scmd);
 6047	queue_group = &ctrl_info->queue_groups[hw_queue];
 6048
 6049	if (pqi_is_logical_device(device)) {
 6050		raid_bypassed = false;
 6051		if (device->raid_bypass_enabled &&
 6052			pqi_is_bypass_eligible_request(scmd) &&
 6053			!pqi_is_parity_write_stream(ctrl_info, scmd)) {
 6054			rc = pqi_raid_bypass_submit_scsi_cmd(ctrl_info, device, scmd, queue_group);
 6055			if (rc == 0 || rc == SCSI_MLQUEUE_HOST_BUSY) {
 6056				raid_bypassed = true;
 6057				device->raid_bypass_cnt++;
 6058			}
 6059		}
 6060		if (!raid_bypassed)
 6061			rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd, queue_group);
 6062	} else {
 6063		if (device->aio_enabled)
 6064			rc = pqi_aio_submit_scsi_cmd(ctrl_info, device, scmd, queue_group);
 6065		else
 6066			rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd, queue_group);
 6067	}
 6068
 6069out:
 6070	if (rc) {
 6071		scmd->host_scribble = NULL;
 6072		atomic_dec(&device->scsi_cmds_outstanding[lun]);
 6073	}
 6074
 6075	return rc;
 6076}
 6077
 6078static unsigned int pqi_queued_io_count(struct pqi_ctrl_info *ctrl_info)
 6079{
 6080	unsigned int i;
 6081	unsigned int path;
 6082	unsigned long flags;
 6083	unsigned int queued_io_count;
 6084	struct pqi_queue_group *queue_group;
 6085	struct pqi_io_request *io_request;
 6086
 6087	queued_io_count = 0;
 6088
 6089	for (i = 0; i < ctrl_info->num_queue_groups; i++) {
 6090		queue_group = &ctrl_info->queue_groups[i];
 6091		for (path = 0; path < 2; path++) {
 6092			spin_lock_irqsave(&queue_group->submit_lock[path], flags);
 6093			list_for_each_entry(io_request, &queue_group->request_list[path], request_list_entry)
 6094				queued_io_count++;
 6095			spin_unlock_irqrestore(&queue_group->submit_lock[path], flags);
 6096		}
 6097	}
 6098
 6099	return queued_io_count;
 6100}
 6101
 6102static unsigned int pqi_nonempty_inbound_queue_count(struct pqi_ctrl_info *ctrl_info)
 6103{
 6104	unsigned int i;
 6105	unsigned int path;
 6106	unsigned int nonempty_inbound_queue_count;
 6107	struct pqi_queue_group *queue_group;
 6108	pqi_index_t iq_pi;
 6109	pqi_index_t iq_ci;
 6110
 6111	nonempty_inbound_queue_count = 0;
 6112
 6113	for (i = 0; i < ctrl_info->num_queue_groups; i++) {
 6114		queue_group = &ctrl_info->queue_groups[i];
 6115		for (path = 0; path < 2; path++) {
 6116			iq_pi = queue_group->iq_pi_copy[path];
 6117			iq_ci = readl(queue_group->iq_ci[path]);
 6118			if (iq_ci != iq_pi)
 6119				nonempty_inbound_queue_count++;
 6120		}
 6121	}
 6122
 6123	return nonempty_inbound_queue_count;
 6124}
 6125
 6126#define PQI_INBOUND_QUEUES_NONEMPTY_WARNING_TIMEOUT_SECS	10
 6127
 6128static int pqi_wait_until_inbound_queues_empty(struct pqi_ctrl_info *ctrl_info)
 6129{
 6130	unsigned long start_jiffies;
 6131	unsigned long warning_timeout;
 6132	unsigned int queued_io_count;
 6133	unsigned int nonempty_inbound_queue_count;
 6134	bool displayed_warning;
 6135
 6136	displayed_warning = false;
 6137	start_jiffies = jiffies;
 6138	warning_timeout = (PQI_INBOUND_QUEUES_NONEMPTY_WARNING_TIMEOUT_SECS * HZ) + start_jiffies;
 6139
 6140	while (1) {
 6141		queued_io_count = pqi_queued_io_count(ctrl_info);
 6142		nonempty_inbound_queue_count = pqi_nonempty_inbound_queue_count(ctrl_info);
 6143		if (queued_io_count == 0 && nonempty_inbound_queue_count == 0)
 6144			break;
 6145		pqi_check_ctrl_health(ctrl_info);
 6146		if (pqi_ctrl_offline(ctrl_info))
 6147			return -ENXIO;
 6148		if (time_after(jiffies, warning_timeout)) {
 6149			dev_warn(&ctrl_info->pci_dev->dev,
 6150				"waiting %u seconds for queued I/O to drain (queued I/O count: %u; non-empty inbound queue count: %u)\n",
 6151				jiffies_to_msecs(jiffies - start_jiffies) / 1000, queued_io_count, nonempty_inbound_queue_count);
 6152			displayed_warning = true;
 6153			warning_timeout = (PQI_INBOUND_QUEUES_NONEMPTY_WARNING_TIMEOUT_SECS * HZ) + jiffies;
 6154		}
 6155		usleep_range(1000, 2000);
 6156	}
 6157
 6158	if (displayed_warning)
 6159		dev_warn(&ctrl_info->pci_dev->dev,
 6160			"queued I/O drained after waiting for %u seconds\n",
 6161			jiffies_to_msecs(jiffies - start_jiffies) / 1000);
 6162
 6163	return 0;
 6164}
 6165
 6166static void pqi_fail_io_queued_for_device(struct pqi_ctrl_info *ctrl_info,
 6167	struct pqi_scsi_dev *device, u8 lun)
 6168{
 6169	unsigned int i;
 6170	unsigned int path;
 6171	struct pqi_queue_group *queue_group;
 6172	unsigned long flags;
 6173	struct pqi_io_request *io_request;
 6174	struct pqi_io_request *next;
 6175	struct scsi_cmnd *scmd;
 6176	struct pqi_scsi_dev *scsi_device;
 6177
 6178	for (i = 0; i < ctrl_info->num_queue_groups; i++) {
 6179		queue_group = &ctrl_info->queue_groups[i];
 6180
 6181		for (path = 0; path < 2; path++) {
 6182			spin_lock_irqsave(
 6183				&queue_group->submit_lock[path], flags);
 6184
 6185			list_for_each_entry_safe(io_request, next,
 6186				&queue_group->request_list[path],
 6187				request_list_entry) {
 6188
 6189				scmd = io_request->scmd;
 6190				if (!scmd)
 6191					continue;
 6192
 6193				scsi_device = scmd->device->hostdata;
 6194				if (scsi_device != device)
 6195					continue;
 6196
 6197				if ((u8)scmd->device->lun != lun)
 6198					continue;
 6199
 6200				list_del(&io_request->request_list_entry);
 6201				set_host_byte(scmd, DID_RESET);
 6202				pqi_free_io_request(io_request);
 6203				scsi_dma_unmap(scmd);
 6204				pqi_scsi_done(scmd);
 6205			}
 6206
 6207			spin_unlock_irqrestore(
 6208				&queue_group->submit_lock[path], flags);
 6209		}
 6210	}
 6211}
 6212
 6213#define PQI_PENDING_IO_WARNING_TIMEOUT_SECS	10
 6214
 6215static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
 6216	struct pqi_scsi_dev *device, u8 lun, unsigned long timeout_msecs)
 6217{
 6218	int cmds_outstanding;
 6219	unsigned long start_jiffies;
 6220	unsigned long warning_timeout;
 6221	unsigned long msecs_waiting;
 6222
 6223	start_jiffies = jiffies;
 6224	warning_timeout = (PQI_PENDING_IO_WARNING_TIMEOUT_SECS * HZ) + start_jiffies;
 6225
 6226	while ((cmds_outstanding = atomic_read(&device->scsi_cmds_outstanding[lun])) > 0) {
 6227		if (ctrl_info->ctrl_removal_state != PQI_CTRL_GRACEFUL_REMOVAL) {
 6228			pqi_check_ctrl_health(ctrl_info);
 6229			if (pqi_ctrl_offline(ctrl_info))
 6230				return -ENXIO;
 6231		}
 6232		msecs_waiting = jiffies_to_msecs(jiffies - start_jiffies);
 6233		if (msecs_waiting >= timeout_msecs) {
 6234			dev_err(&ctrl_info->pci_dev->dev,
 6235				"scsi %d:%d:%d:%d: timed out after %lu seconds waiting for %d outstanding command(s)\n",
 6236				ctrl_info->scsi_host->host_no, device->bus, device->target,
 6237				lun, msecs_waiting / 1000, cmds_outstanding);
 6238			return -ETIMEDOUT;
 6239		}
 6240		if (time_after(jiffies, warning_timeout)) {
 6241			dev_warn(&ctrl_info->pci_dev->dev,
 6242				"scsi %d:%d:%d:%d: waiting %lu seconds for %d outstanding command(s)\n",
 6243				ctrl_info->scsi_host->host_no, device->bus, device->target,
 6244				lun, msecs_waiting / 1000, cmds_outstanding);
 6245			warning_timeout = (PQI_PENDING_IO_WARNING_TIMEOUT_SECS * HZ) + jiffies;
 6246		}
 6247		usleep_range(1000, 2000);
 6248	}
 6249
 6250	return 0;
 6251}
 6252
 6253static void pqi_lun_reset_complete(struct pqi_io_request *io_request,
 6254	void *context)
 6255{
 6256	struct completion *waiting = context;
 6257
 6258	complete(waiting);
 6259}
 6260
 6261#define PQI_LUN_RESET_POLL_COMPLETION_SECS	10
 6262
 6263static int pqi_wait_for_lun_reset_completion(struct pqi_ctrl_info *ctrl_info,
 6264	struct pqi_scsi_dev *device, u8 lun, struct completion *wait)
 6265{
 6266	int rc;
 6267	unsigned int wait_secs;
 6268	int cmds_outstanding;
 6269
 6270	wait_secs = 0;
 6271
 6272	while (1) {
 6273		if (wait_for_completion_io_timeout(wait,
 6274			PQI_LUN_RESET_POLL_COMPLETION_SECS * HZ)) {
 6275			rc = 0;
 6276			break;
 6277		}
 6278
 6279		pqi_check_ctrl_health(ctrl_info);
 6280		if (pqi_ctrl_offline(ctrl_info)) {
 6281			rc = -ENXIO;
 6282			break;
 6283		}
 6284
 6285		wait_secs += PQI_LUN_RESET_POLL_COMPLETION_SECS;
 6286		cmds_outstanding = atomic_read(&device->scsi_cmds_outstanding[lun]);
 6287		dev_warn(&ctrl_info->pci_dev->dev,
 6288			"scsi %d:%d:%d:%d: waiting %u seconds for LUN reset to complete (%d command(s) outstanding)\n",
 6289			ctrl_info->scsi_host->host_no, device->bus, device->target, lun, wait_secs, cmds_outstanding);
 6290	}
 6291
 6292	return rc;
 6293}
 6294
 6295#define PQI_LUN_RESET_FIRMWARE_TIMEOUT_SECS	30
 6296
 6297static int pqi_lun_reset(struct pqi_ctrl_info *ctrl_info, struct pqi_scsi_dev *device, u8 lun)
 6298{
 6299	int rc;
 6300	struct pqi_io_request *io_request;
 6301	DECLARE_COMPLETION_ONSTACK(wait);
 6302	struct pqi_task_management_request *request;
 6303
 6304	io_request = pqi_alloc_io_request(ctrl_info, NULL);
 6305	io_request->io_complete_callback = pqi_lun_reset_complete;
 6306	io_request->context = &wait;
 6307
 6308	request = io_request->iu;
 6309	memset(request, 0, sizeof(*request));
 6310
 6311	request->header.iu_type = PQI_REQUEST_IU_TASK_MANAGEMENT;
 6312	put_unaligned_le16(sizeof(*request) - PQI_REQUEST_HEADER_LENGTH,
 6313		&request->header.iu_length);
 6314	put_unaligned_le16(io_request->index, &request->request_id);
 6315	memcpy(request->lun_number, device->scsi3addr,
 6316		sizeof(request->lun_number));
 6317	if (!pqi_is_logical_device(device) && ctrl_info->multi_lun_device_supported)
 6318		request->ml_device_lun_number = lun;
 6319	request->task_management_function = SOP_TASK_MANAGEMENT_LUN_RESET;
 6320	if (ctrl_info->tmf_iu_timeout_supported)
 6321		put_unaligned_le16(PQI_LUN_RESET_FIRMWARE_TIMEOUT_SECS, &request->timeout);
 6322
 6323	pqi_start_io(ctrl_info, &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
 6324		io_request);
 6325
 6326	rc = pqi_wait_for_lun_reset_completion(ctrl_info, device, lun, &wait);
 6327	if (rc == 0)
 6328		rc = io_request->status;
 6329
 6330	pqi_free_io_request(io_request);
 6331
 6332	return rc;
 6333}
 6334
 6335#define PQI_LUN_RESET_RETRIES				3
 6336#define PQI_LUN_RESET_RETRY_INTERVAL_MSECS		(10 * 1000)
 6337#define PQI_LUN_RESET_PENDING_IO_TIMEOUT_MSECS		(10 * 60 * 1000)
 6338#define PQI_LUN_RESET_FAILED_PENDING_IO_TIMEOUT_MSECS	(2 * 60 * 1000)
 6339
 6340static int pqi_lun_reset_with_retries(struct pqi_ctrl_info *ctrl_info, struct pqi_scsi_dev *device, u8 lun)
 6341{
 6342	int reset_rc;
 6343	int wait_rc;
 6344	unsigned int retries;
 6345	unsigned long timeout_msecs;
 6346
 6347	for (retries = 0;;) {
 6348		reset_rc = pqi_lun_reset(ctrl_info, device, lun);
 6349		if (reset_rc == 0 || reset_rc == -ENODEV || reset_rc == -ENXIO || ++retries > PQI_LUN_RESET_RETRIES)
 6350			break;
 6351		msleep(PQI_LUN_RESET_RETRY_INTERVAL_MSECS);
 6352	}
 6353
 6354	timeout_msecs = reset_rc ? PQI_LUN_RESET_FAILED_PENDING_IO_TIMEOUT_MSECS :
 6355		PQI_LUN_RESET_PENDING_IO_TIMEOUT_MSECS;
 6356
 6357	wait_rc = pqi_device_wait_for_pending_io(ctrl_info, device, lun, timeout_msecs);
 6358	if (wait_rc && reset_rc == 0)
 6359		reset_rc = wait_rc;
 6360
 6361	return reset_rc == 0 ? SUCCESS : FAILED;
 6362}
 6363
 6364static int pqi_device_reset(struct pqi_ctrl_info *ctrl_info, struct pqi_scsi_dev *device, u8 lun)
 6365{
 6366	int rc;
 6367
 6368	pqi_ctrl_block_requests(ctrl_info);
 6369	pqi_ctrl_wait_until_quiesced(ctrl_info);
 6370	pqi_fail_io_queued_for_device(ctrl_info, device, lun);
 6371	rc = pqi_wait_until_inbound_queues_empty(ctrl_info);
 6372	pqi_device_reset_start(device, lun);
 6373	pqi_ctrl_unblock_requests(ctrl_info);
 6374	if (rc)
 6375		rc = FAILED;
 6376	else
 6377		rc = pqi_lun_reset_with_retries(ctrl_info, device, lun);
 6378	pqi_device_reset_done(device, lun);
 6379
 6380	return rc;
 6381}
 6382
 6383static int pqi_device_reset_handler(struct pqi_ctrl_info *ctrl_info, struct pqi_scsi_dev *device, u8 lun, struct scsi_cmnd *scmd, u8 scsi_opcode)
 6384{
 6385	int rc;
 6386
 6387	mutex_lock(&ctrl_info->lun_reset_mutex);
 6388
 6389	dev_err(&ctrl_info->pci_dev->dev,
 6390		"resetting scsi %d:%d:%d:%u SCSI cmd at %p due to cmd opcode 0x%02x\n",
 6391		ctrl_info->scsi_host->host_no, device->bus, device->target, lun, scmd, scsi_opcode);
 6392
 6393	pqi_check_ctrl_health(ctrl_info);
 6394	if (pqi_ctrl_offline(ctrl_info))
 6395		rc = FAILED;
 6396	else
 6397		rc = pqi_device_reset(ctrl_info, device, lun);
 6398
 6399	dev_err(&ctrl_info->pci_dev->dev,
 6400		"reset of scsi %d:%d:%d:%u: %s\n",
 6401		ctrl_info->scsi_host->host_no, device->bus, device->target, lun,
 6402		rc == SUCCESS ? "SUCCESS" : "FAILED");
 6403
 6404	mutex_unlock(&ctrl_info->lun_reset_mutex);
 6405
 6406	return rc;
 6407}
 6408
 6409static int pqi_eh_device_reset_handler(struct scsi_cmnd *scmd)
 6410{
 6411	struct Scsi_Host *shost;
 6412	struct pqi_ctrl_info *ctrl_info;
 6413	struct pqi_scsi_dev *device;
 6414	u8 scsi_opcode;
 6415
 6416	shost = scmd->device->host;
 6417	ctrl_info = shost_to_hba(shost);
 6418	device = scmd->device->hostdata;
 6419	scsi_opcode = scmd->cmd_len > 0 ? scmd->cmnd[0] : 0xff;
 6420
 6421	return pqi_device_reset_handler(ctrl_info, device, (u8)scmd->device->lun, scmd, scsi_opcode);
 6422}
 6423
 6424static void pqi_tmf_worker(struct work_struct *work)
 6425{
 6426	struct pqi_tmf_work *tmf_work;
 6427	struct scsi_cmnd *scmd;
 6428
 6429	tmf_work = container_of(work, struct pqi_tmf_work, work_struct);
 6430	scmd = (struct scsi_cmnd *)xchg(&tmf_work->scmd, NULL);
 6431
 6432	pqi_device_reset_handler(tmf_work->ctrl_info, tmf_work->device, tmf_work->lun, scmd, tmf_work->scsi_opcode);
 6433}
 6434
 6435static int pqi_eh_abort_handler(struct scsi_cmnd *scmd)
 6436{
 6437	struct Scsi_Host *shost;
 6438	struct pqi_ctrl_info *ctrl_info;
 6439	struct pqi_scsi_dev *device;
 6440	struct pqi_tmf_work *tmf_work;
 6441	DECLARE_COMPLETION_ONSTACK(wait);
 6442
 6443	shost = scmd->device->host;
 6444	ctrl_info = shost_to_hba(shost);
 6445	device = scmd->device->hostdata;
 6446
 6447	dev_err(&ctrl_info->pci_dev->dev,
 6448		"attempting TASK ABORT on scsi %d:%d:%d:%d for SCSI cmd at %p\n",
 6449		shost->host_no, device->bus, device->target, (int)scmd->device->lun, scmd);
 6450
 6451	if (cmpxchg(&scmd->host_scribble, PQI_NO_COMPLETION, (void *)&wait) == NULL) {
 6452		dev_err(&ctrl_info->pci_dev->dev,
 6453			"scsi %d:%d:%d:%d for SCSI cmd at %p already completed\n",
 6454			shost->host_no, device->bus, device->target, (int)scmd->device->lun, scmd);
 6455		scmd->result = DID_RESET << 16;
 6456		goto out;
 6457	}
 6458
 6459	tmf_work = &device->tmf_work[scmd->device->lun];
 6460
 6461	if (cmpxchg(&tmf_work->scmd, NULL, scmd) == NULL) {
 6462		tmf_work->ctrl_info = ctrl_info;
 6463		tmf_work->device = device;
 6464		tmf_work->lun = (u8)scmd->device->lun;
 6465		tmf_work->scsi_opcode = scmd->cmd_len > 0 ? scmd->cmnd[0] : 0xff;
 6466		schedule_work(&tmf_work->work_struct);
 6467	}
 6468
 6469	wait_for_completion(&wait);
 6470
 6471	dev_err(&ctrl_info->pci_dev->dev,
 6472		"TASK ABORT on scsi %d:%d:%d:%d for SCSI cmd at %p: SUCCESS\n",
 6473		shost->host_no, device->bus, device->target, (int)scmd->device->lun, scmd);
 6474
 6475out:
 6476
 6477	return SUCCESS;
 6478}
 6479
 6480static int pqi_slave_alloc(struct scsi_device *sdev)
 6481{
 6482	struct pqi_scsi_dev *device;
 6483	unsigned long flags;
 6484	struct pqi_ctrl_info *ctrl_info;
 6485	struct scsi_target *starget;
 6486	struct sas_rphy *rphy;
 6487
 6488	ctrl_info = shost_to_hba(sdev->host);
 6489
 6490	spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
 6491
 6492	if (sdev_channel(sdev) == PQI_PHYSICAL_DEVICE_BUS) {
 6493		starget = scsi_target(sdev);
 6494		rphy = target_to_rphy(starget);
 6495		device = pqi_find_device_by_sas_rphy(ctrl_info, rphy);
 6496		if (device) {
 6497			if (device->target_lun_valid) {
 6498				device->ignore_device = true;
 6499			} else {
 6500				device->target = sdev_id(sdev);
 6501				device->lun = sdev->lun;
 6502				device->target_lun_valid = true;
 6503			}
 6504		}
 6505	} else {
 6506		device = pqi_find_scsi_dev(ctrl_info, sdev_channel(sdev),
 6507			sdev_id(sdev), sdev->lun);
 6508	}
 6509
 6510	if (device) {
 6511		sdev->hostdata = device;
 6512		device->sdev = sdev;
 6513		if (device->queue_depth) {
 6514			device->advertised_queue_depth = device->queue_depth;
 6515			scsi_change_queue_depth(sdev,
 6516				device->advertised_queue_depth);
 6517		}
 6518		if (pqi_is_logical_device(device)) {
 6519			pqi_disable_write_same(sdev);
 6520		} else {
 6521			sdev->allow_restart = 1;
 6522			if (device->device_type == SA_DEVICE_TYPE_NVME)
 6523				pqi_disable_write_same(sdev);
 6524		}
 6525	}
 6526
 6527	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 6528
 6529	return 0;
 6530}
 6531
 6532static void pqi_map_queues(struct Scsi_Host *shost)
 6533{
 6534	struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
 6535
 6536	if (!ctrl_info->disable_managed_interrupts)
 6537		return blk_mq_pci_map_queues(&shost->tag_set.map[HCTX_TYPE_DEFAULT],
 6538			      ctrl_info->pci_dev, 0);
 6539	else
 6540		return blk_mq_map_queues(&shost->tag_set.map[HCTX_TYPE_DEFAULT]);
 6541}
 6542
 6543static inline bool pqi_is_tape_changer_device(struct pqi_scsi_dev *device)
 6544{
 6545	return device->devtype == TYPE_TAPE || device->devtype == TYPE_MEDIUM_CHANGER;
 6546}
 6547
 6548static int pqi_slave_configure(struct scsi_device *sdev)
 6549{
 6550	int rc = 0;
 6551	struct pqi_scsi_dev *device;
 6552
 6553	device = sdev->hostdata;
 6554	device->devtype = sdev->type;
 6555
 6556	if (pqi_is_tape_changer_device(device) && device->ignore_device) {
 6557		rc = -ENXIO;
 6558		device->ignore_device = false;
 6559	}
 6560
 6561	return rc;
 6562}
 6563
 6564static void pqi_slave_destroy(struct scsi_device *sdev)
 6565{
 6566	struct pqi_ctrl_info *ctrl_info;
 6567	struct pqi_scsi_dev *device;
 6568	int mutex_acquired;
 6569	unsigned long flags;
 6570
 6571	ctrl_info = shost_to_hba(sdev->host);
 6572
 6573	mutex_acquired = mutex_trylock(&ctrl_info->scan_mutex);
 6574	if (!mutex_acquired)
 6575		return;
 6576
 6577	device = sdev->hostdata;
 6578	if (!device) {
 6579		mutex_unlock(&ctrl_info->scan_mutex);
 6580		return;
 6581	}
 6582
 6583	device->lun_count--;
 6584	if (device->lun_count > 0) {
 6585		mutex_unlock(&ctrl_info->scan_mutex);
 6586		return;
 6587	}
 6588
 6589	spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
 6590	list_del(&device->scsi_device_list_entry);
 6591	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 6592
 6593	mutex_unlock(&ctrl_info->scan_mutex);
 6594
 6595	pqi_dev_info(ctrl_info, "removed", device);
 6596	pqi_free_device(device);
 6597}
 6598
 6599static int pqi_getpciinfo_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg)
 6600{
 6601	struct pci_dev *pci_dev;
 6602	u32 subsystem_vendor;
 6603	u32 subsystem_device;
 6604	cciss_pci_info_struct pci_info;
 6605
 6606	if (!arg)
 6607		return -EINVAL;
 6608
 6609	pci_dev = ctrl_info->pci_dev;
 6610
 6611	pci_info.domain = pci_domain_nr(pci_dev->bus);
 6612	pci_info.bus = pci_dev->bus->number;
 6613	pci_info.dev_fn = pci_dev->devfn;
 6614	subsystem_vendor = pci_dev->subsystem_vendor;
 6615	subsystem_device = pci_dev->subsystem_device;
 6616	pci_info.board_id = ((subsystem_device << 16) & 0xffff0000) | subsystem_vendor;
 6617
 6618	if (copy_to_user(arg, &pci_info, sizeof(pci_info)))
 6619		return -EFAULT;
 6620
 6621	return 0;
 6622}
 6623
 6624static int pqi_getdrivver_ioctl(void __user *arg)
 6625{
 6626	u32 version;
 6627
 6628	if (!arg)
 6629		return -EINVAL;
 6630
 6631	version = (DRIVER_MAJOR << 28) | (DRIVER_MINOR << 24) |
 6632		(DRIVER_RELEASE << 16) | DRIVER_REVISION;
 6633
 6634	if (copy_to_user(arg, &version, sizeof(version)))
 6635		return -EFAULT;
 6636
 6637	return 0;
 6638}
 6639
 6640struct ciss_error_info {
 6641	u8	scsi_status;
 6642	int	command_status;
 6643	size_t	sense_data_length;
 6644};
 6645
 6646static void pqi_error_info_to_ciss(struct pqi_raid_error_info *pqi_error_info,
 6647	struct ciss_error_info *ciss_error_info)
 6648{
 6649	int ciss_cmd_status;
 6650	size_t sense_data_length;
 6651
 6652	switch (pqi_error_info->data_out_result) {
 6653	case PQI_DATA_IN_OUT_GOOD:
 6654		ciss_cmd_status = CISS_CMD_STATUS_SUCCESS;
 6655		break;
 6656	case PQI_DATA_IN_OUT_UNDERFLOW:
 6657		ciss_cmd_status = CISS_CMD_STATUS_DATA_UNDERRUN;
 6658		break;
 6659	case PQI_DATA_IN_OUT_BUFFER_OVERFLOW:
 6660		ciss_cmd_status = CISS_CMD_STATUS_DATA_OVERRUN;
 6661		break;
 6662	case PQI_DATA_IN_OUT_PROTOCOL_ERROR:
 6663	case PQI_DATA_IN_OUT_BUFFER_ERROR:
 6664	case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA:
 6665	case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE:
 6666	case PQI_DATA_IN_OUT_ERROR:
 6667		ciss_cmd_status = CISS_CMD_STATUS_PROTOCOL_ERROR;
 6668		break;
 6669	case PQI_DATA_IN_OUT_HARDWARE_ERROR:
 6670	case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR:
 6671	case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT:
 6672	case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED:
 6673	case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED:
 6674	case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED:
 6675	case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST:
 6676	case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION:
 6677	case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED:
 6678	case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ:
 6679		ciss_cmd_status = CISS_CMD_STATUS_HARDWARE_ERROR;
 6680		break;
 6681	case PQI_DATA_IN_OUT_UNSOLICITED_ABORT:
 6682		ciss_cmd_status = CISS_CMD_STATUS_UNSOLICITED_ABORT;
 6683		break;
 6684	case PQI_DATA_IN_OUT_ABORTED:
 6685		ciss_cmd_status = CISS_CMD_STATUS_ABORTED;
 6686		break;
 6687	case PQI_DATA_IN_OUT_TIMEOUT:
 6688		ciss_cmd_status = CISS_CMD_STATUS_TIMEOUT;
 6689		break;
 6690	default:
 6691		ciss_cmd_status = CISS_CMD_STATUS_TARGET_STATUS;
 6692		break;
 6693	}
 6694
 6695	sense_data_length =
 6696		get_unaligned_le16(&pqi_error_info->sense_data_length);
 6697	if (sense_data_length == 0)
 6698		sense_data_length =
 6699		get_unaligned_le16(&pqi_error_info->response_data_length);
 6700	if (sense_data_length)
 6701		if (sense_data_length > sizeof(pqi_error_info->data))
 6702			sense_data_length = sizeof(pqi_error_info->data);
 6703
 6704	ciss_error_info->scsi_status = pqi_error_info->status;
 6705	ciss_error_info->command_status = ciss_cmd_status;
 6706	ciss_error_info->sense_data_length = sense_data_length;
 6707}
 6708
 6709static int pqi_passthru_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg)
 6710{
 6711	int rc;
 6712	char *kernel_buffer = NULL;
 6713	u16 iu_length;
 6714	size_t sense_data_length;
 6715	IOCTL_Command_struct iocommand;
 6716	struct pqi_raid_path_request request;
 6717	struct pqi_raid_error_info pqi_error_info;
 6718	struct ciss_error_info ciss_error_info;
 6719
 6720	if (pqi_ctrl_offline(ctrl_info))
 6721		return -ENXIO;
 6722	if (pqi_ofa_in_progress(ctrl_info) && pqi_ctrl_blocked(ctrl_info))
 6723		return -EBUSY;
 6724	if (!arg)
 6725		return -EINVAL;
 6726	if (!capable(CAP_SYS_RAWIO))
 6727		return -EPERM;
 6728	if (copy_from_user(&iocommand, arg, sizeof(iocommand)))
 6729		return -EFAULT;
 6730	if (iocommand.buf_size < 1 &&
 6731		iocommand.Request.Type.Direction != XFER_NONE)
 6732		return -EINVAL;
 6733	if (iocommand.Request.CDBLen > sizeof(request.cdb))
 6734		return -EINVAL;
 6735	if (iocommand.Request.Type.Type != TYPE_CMD)
 6736		return -EINVAL;
 6737
 6738	switch (iocommand.Request.Type.Direction) {
 6739	case XFER_NONE:
 6740	case XFER_WRITE:
 6741	case XFER_READ:
 6742	case XFER_READ | XFER_WRITE:
 6743		break;
 6744	default:
 6745		return -EINVAL;
 6746	}
 6747
 6748	if (iocommand.buf_size > 0) {
 6749		kernel_buffer = kmalloc(iocommand.buf_size, GFP_KERNEL);
 6750		if (!kernel_buffer)
 6751			return -ENOMEM;
 6752		if (iocommand.Request.Type.Direction & XFER_WRITE) {
 6753			if (copy_from_user(kernel_buffer, iocommand.buf,
 6754				iocommand.buf_size)) {
 6755				rc = -EFAULT;
 6756				goto out;
 6757			}
 6758		} else {
 6759			memset(kernel_buffer, 0, iocommand.buf_size);
 6760		}
 6761	}
 6762
 6763	memset(&request, 0, sizeof(request));
 6764
 6765	request.header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
 6766	iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
 6767		PQI_REQUEST_HEADER_LENGTH;
 6768	memcpy(request.lun_number, iocommand.LUN_info.LunAddrBytes,
 6769		sizeof(request.lun_number));
 6770	memcpy(request.cdb, iocommand.Request.CDB, iocommand.Request.CDBLen);
 6771	request.additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
 6772
 6773	switch (iocommand.Request.Type.Direction) {
 6774	case XFER_NONE:
 6775		request.data_direction = SOP_NO_DIRECTION_FLAG;
 6776		break;
 6777	case XFER_WRITE:
 6778		request.data_direction = SOP_WRITE_FLAG;
 6779		break;
 6780	case XFER_READ:
 6781		request.data_direction = SOP_READ_FLAG;
 6782		break;
 6783	case XFER_READ | XFER_WRITE:
 6784		request.data_direction = SOP_BIDIRECTIONAL;
 6785		break;
 6786	}
 6787
 6788	request.task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
 6789
 6790	if (iocommand.buf_size > 0) {
 6791		put_unaligned_le32(iocommand.buf_size, &request.buffer_length);
 6792
 6793		rc = pqi_map_single(ctrl_info->pci_dev,
 6794			&request.sg_descriptors[0], kernel_buffer,
 6795			iocommand.buf_size, DMA_BIDIRECTIONAL);
 6796		if (rc)
 6797			goto out;
 6798
 6799		iu_length += sizeof(request.sg_descriptors[0]);
 6800	}
 6801
 6802	put_unaligned_le16(iu_length, &request.header.iu_length);
 6803
 6804	if (ctrl_info->raid_iu_timeout_supported)
 6805		put_unaligned_le32(iocommand.Request.Timeout, &request.timeout);
 6806
 6807	rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
 6808		PQI_SYNC_FLAGS_INTERRUPTABLE, &pqi_error_info);
 6809
 6810	if (iocommand.buf_size > 0)
 6811		pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
 6812			DMA_BIDIRECTIONAL);
 6813
 6814	memset(&iocommand.error_info, 0, sizeof(iocommand.error_info));
 6815
 6816	if (rc == 0) {
 6817		pqi_error_info_to_ciss(&pqi_error_info, &ciss_error_info);
 6818		iocommand.error_info.ScsiStatus = ciss_error_info.scsi_status;
 6819		iocommand.error_info.CommandStatus =
 6820			ciss_error_info.command_status;
 6821		sense_data_length = ciss_error_info.sense_data_length;
 6822		if (sense_data_length) {
 6823			if (sense_data_length >
 6824				sizeof(iocommand.error_info.SenseInfo))
 6825				sense_data_length =
 6826					sizeof(iocommand.error_info.SenseInfo);
 6827			memcpy(iocommand.error_info.SenseInfo,
 6828				pqi_error_info.data, sense_data_length);
 6829			iocommand.error_info.SenseLen = sense_data_length;
 6830		}
 6831	}
 6832
 6833	if (copy_to_user(arg, &iocommand, sizeof(iocommand))) {
 6834		rc = -EFAULT;
 6835		goto out;
 6836	}
 6837
 6838	if (rc == 0 && iocommand.buf_size > 0 &&
 6839		(iocommand.Request.Type.Direction & XFER_READ)) {
 6840		if (copy_to_user(iocommand.buf, kernel_buffer,
 6841			iocommand.buf_size)) {
 6842			rc = -EFAULT;
 6843		}
 6844	}
 6845
 6846out:
 6847	kfree(kernel_buffer);
 6848
 6849	return rc;
 6850}
 6851
 6852static int pqi_ioctl(struct scsi_device *sdev, unsigned int cmd,
 6853		     void __user *arg)
 6854{
 6855	int rc;
 6856	struct pqi_ctrl_info *ctrl_info;
 6857
 6858	ctrl_info = shost_to_hba(sdev->host);
 6859
 6860	switch (cmd) {
 6861	case CCISS_DEREGDISK:
 6862	case CCISS_REGNEWDISK:
 6863	case CCISS_REGNEWD:
 6864		rc = pqi_scan_scsi_devices(ctrl_info);
 6865		break;
 6866	case CCISS_GETPCIINFO:
 6867		rc = pqi_getpciinfo_ioctl(ctrl_info, arg);
 6868		break;
 6869	case CCISS_GETDRIVVER:
 6870		rc = pqi_getdrivver_ioctl(arg);
 6871		break;
 6872	case CCISS_PASSTHRU:
 6873		rc = pqi_passthru_ioctl(ctrl_info, arg);
 6874		break;
 6875	default:
 6876		rc = -EINVAL;
 6877		break;
 6878	}
 6879
 6880	return rc;
 6881}
 6882
 6883static ssize_t pqi_firmware_version_show(struct device *dev,
 6884	struct device_attribute *attr, char *buffer)
 6885{
 6886	struct Scsi_Host *shost;
 6887	struct pqi_ctrl_info *ctrl_info;
 6888
 6889	shost = class_to_shost(dev);
 6890	ctrl_info = shost_to_hba(shost);
 6891
 6892	return scnprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->firmware_version);
 6893}
 6894
 6895static ssize_t pqi_driver_version_show(struct device *dev,
 6896	struct device_attribute *attr, char *buffer)
 6897{
 6898	return scnprintf(buffer, PAGE_SIZE, "%s\n", DRIVER_VERSION BUILD_TIMESTAMP);
 6899}
 6900
 6901static ssize_t pqi_serial_number_show(struct device *dev,
 6902	struct device_attribute *attr, char *buffer)
 6903{
 6904	struct Scsi_Host *shost;
 6905	struct pqi_ctrl_info *ctrl_info;
 6906
 6907	shost = class_to_shost(dev);
 6908	ctrl_info = shost_to_hba(shost);
 6909
 6910	return scnprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->serial_number);
 6911}
 6912
 6913static ssize_t pqi_model_show(struct device *dev,
 6914	struct device_attribute *attr, char *buffer)
 6915{
 6916	struct Scsi_Host *shost;
 6917	struct pqi_ctrl_info *ctrl_info;
 6918
 6919	shost = class_to_shost(dev);
 6920	ctrl_info = shost_to_hba(shost);
 6921
 6922	return scnprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->model);
 6923}
 6924
 6925static ssize_t pqi_vendor_show(struct device *dev,
 6926	struct device_attribute *attr, char *buffer)
 6927{
 6928	struct Scsi_Host *shost;
 6929	struct pqi_ctrl_info *ctrl_info;
 6930
 6931	shost = class_to_shost(dev);
 6932	ctrl_info = shost_to_hba(shost);
 6933
 6934	return scnprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->vendor);
 6935}
 6936
 6937static ssize_t pqi_host_rescan_store(struct device *dev,
 6938	struct device_attribute *attr, const char *buffer, size_t count)
 6939{
 6940	struct Scsi_Host *shost = class_to_shost(dev);
 6941
 6942	pqi_scan_start(shost);
 6943
 6944	return count;
 6945}
 6946
 6947static ssize_t pqi_lockup_action_show(struct device *dev,
 6948	struct device_attribute *attr, char *buffer)
 6949{
 6950	int count = 0;
 6951	unsigned int i;
 6952
 6953	for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
 6954		if (pqi_lockup_actions[i].action == pqi_lockup_action)
 6955			count += scnprintf(buffer + count, PAGE_SIZE - count,
 6956				"[%s] ", pqi_lockup_actions[i].name);
 6957		else
 6958			count += scnprintf(buffer + count, PAGE_SIZE - count,
 6959				"%s ", pqi_lockup_actions[i].name);
 6960	}
 6961
 6962	count += scnprintf(buffer + count, PAGE_SIZE - count, "\n");
 6963
 6964	return count;
 6965}
 6966
 6967static ssize_t pqi_lockup_action_store(struct device *dev,
 6968	struct device_attribute *attr, const char *buffer, size_t count)
 6969{
 6970	unsigned int i;
 6971	char *action_name;
 6972	char action_name_buffer[32];
 6973
 6974	strscpy(action_name_buffer, buffer, sizeof(action_name_buffer));
 6975	action_name = strstrip(action_name_buffer);
 6976
 6977	for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
 6978		if (strcmp(action_name, pqi_lockup_actions[i].name) == 0) {
 6979			pqi_lockup_action = pqi_lockup_actions[i].action;
 6980			return count;
 6981		}
 6982	}
 6983
 6984	return -EINVAL;
 6985}
 6986
 6987static ssize_t pqi_host_enable_stream_detection_show(struct device *dev,
 6988	struct device_attribute *attr, char *buffer)
 6989{
 6990	struct Scsi_Host *shost = class_to_shost(dev);
 6991	struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
 6992
 6993	return scnprintf(buffer, 10, "%x\n",
 6994			ctrl_info->enable_stream_detection);
 6995}
 6996
 6997static ssize_t pqi_host_enable_stream_detection_store(struct device *dev,
 6998	struct device_attribute *attr, const char *buffer, size_t count)
 6999{
 7000	struct Scsi_Host *shost = class_to_shost(dev);
 7001	struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
 7002	u8 set_stream_detection = 0;
 7003
 7004	if (kstrtou8(buffer, 0, &set_stream_detection))
 7005		return -EINVAL;
 7006
 7007	if (set_stream_detection > 0)
 7008		set_stream_detection = 1;
 7009
 7010	ctrl_info->enable_stream_detection = set_stream_detection;
 7011
 7012	return count;
 7013}
 7014
 7015static ssize_t pqi_host_enable_r5_writes_show(struct device *dev,
 7016	struct device_attribute *attr, char *buffer)
 7017{
 7018	struct Scsi_Host *shost = class_to_shost(dev);
 7019	struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
 7020
 7021	return scnprintf(buffer, 10, "%x\n", ctrl_info->enable_r5_writes);
 7022}
 7023
 7024static ssize_t pqi_host_enable_r5_writes_store(struct device *dev,
 7025	struct device_attribute *attr, const char *buffer, size_t count)
 7026{
 7027	struct Scsi_Host *shost = class_to_shost(dev);
 7028	struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
 7029	u8 set_r5_writes = 0;
 7030
 7031	if (kstrtou8(buffer, 0, &set_r5_writes))
 7032		return -EINVAL;
 7033
 7034	if (set_r5_writes > 0)
 7035		set_r5_writes = 1;
 7036
 7037	ctrl_info->enable_r5_writes = set_r5_writes;
 7038
 7039	return count;
 7040}
 7041
 7042static ssize_t pqi_host_enable_r6_writes_show(struct device *dev,
 7043	struct device_attribute *attr, char *buffer)
 7044{
 7045	struct Scsi_Host *shost = class_to_shost(dev);
 7046	struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
 7047
 7048	return scnprintf(buffer, 10, "%x\n", ctrl_info->enable_r6_writes);
 7049}
 7050
 7051static ssize_t pqi_host_enable_r6_writes_store(struct device *dev,
 7052	struct device_attribute *attr, const char *buffer, size_t count)
 7053{
 7054	struct Scsi_Host *shost = class_to_shost(dev);
 7055	struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
 7056	u8 set_r6_writes = 0;
 7057
 7058	if (kstrtou8(buffer, 0, &set_r6_writes))
 7059		return -EINVAL;
 7060
 7061	if (set_r6_writes > 0)
 7062		set_r6_writes = 1;
 7063
 7064	ctrl_info->enable_r6_writes = set_r6_writes;
 7065
 7066	return count;
 7067}
 7068
 7069static DEVICE_ATTR(driver_version, 0444, pqi_driver_version_show, NULL);
 7070static DEVICE_ATTR(firmware_version, 0444, pqi_firmware_version_show, NULL);
 7071static DEVICE_ATTR(model, 0444, pqi_model_show, NULL);
 7072static DEVICE_ATTR(serial_number, 0444, pqi_serial_number_show, NULL);
 7073static DEVICE_ATTR(vendor, 0444, pqi_vendor_show, NULL);
 7074static DEVICE_ATTR(rescan, 0200, NULL, pqi_host_rescan_store);
 7075static DEVICE_ATTR(lockup_action, 0644, pqi_lockup_action_show,
 7076	pqi_lockup_action_store);
 7077static DEVICE_ATTR(enable_stream_detection, 0644,
 7078	pqi_host_enable_stream_detection_show,
 7079	pqi_host_enable_stream_detection_store);
 7080static DEVICE_ATTR(enable_r5_writes, 0644,
 7081	pqi_host_enable_r5_writes_show, pqi_host_enable_r5_writes_store);
 7082static DEVICE_ATTR(enable_r6_writes, 0644,
 7083	pqi_host_enable_r6_writes_show, pqi_host_enable_r6_writes_store);
 7084
 7085static struct attribute *pqi_shost_attrs[] = {
 7086	&dev_attr_driver_version.attr,
 7087	&dev_attr_firmware_version.attr,
 7088	&dev_attr_model.attr,
 7089	&dev_attr_serial_number.attr,
 7090	&dev_attr_vendor.attr,
 7091	&dev_attr_rescan.attr,
 7092	&dev_attr_lockup_action.attr,
 7093	&dev_attr_enable_stream_detection.attr,
 7094	&dev_attr_enable_r5_writes.attr,
 7095	&dev_attr_enable_r6_writes.attr,
 7096	NULL
 7097};
 7098
 7099ATTRIBUTE_GROUPS(pqi_shost);
 7100
 7101static ssize_t pqi_unique_id_show(struct device *dev,
 7102	struct device_attribute *attr, char *buffer)
 7103{
 7104	struct pqi_ctrl_info *ctrl_info;
 7105	struct scsi_device *sdev;
 7106	struct pqi_scsi_dev *device;
 7107	unsigned long flags;
 7108	u8 unique_id[16];
 7109
 7110	sdev = to_scsi_device(dev);
 7111	ctrl_info = shost_to_hba(sdev->host);
 7112
 7113	if (pqi_ctrl_offline(ctrl_info))
 7114		return -ENODEV;
 7115
 7116	spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
 7117
 7118	device = sdev->hostdata;
 7119	if (!device) {
 7120		spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 7121		return -ENODEV;
 7122	}
 7123
 7124	if (device->is_physical_device)
 7125		memcpy(unique_id, device->wwid, sizeof(device->wwid));
 7126	else
 7127		memcpy(unique_id, device->volume_id, sizeof(device->volume_id));
 7128
 7129	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 7130
 7131	return scnprintf(buffer, PAGE_SIZE,
 7132		"%02X%02X%02X%02X%02X%02X%02X%02X"
 7133		"%02X%02X%02X%02X%02X%02X%02X%02X\n",
 7134		unique_id[0], unique_id[1], unique_id[2], unique_id[3],
 7135		unique_id[4], unique_id[5], unique_id[6], unique_id[7],
 7136		unique_id[8], unique_id[9], unique_id[10], unique_id[11],
 7137		unique_id[12], unique_id[13], unique_id[14], unique_id[15]);
 7138}
 7139
 7140static ssize_t pqi_lunid_show(struct device *dev,
 7141	struct device_attribute *attr, char *buffer)
 7142{
 7143	struct pqi_ctrl_info *ctrl_info;
 7144	struct scsi_device *sdev;
 7145	struct pqi_scsi_dev *device;
 7146	unsigned long flags;
 7147	u8 lunid[8];
 7148
 7149	sdev = to_scsi_device(dev);
 7150	ctrl_info = shost_to_hba(sdev->host);
 7151
 7152	if (pqi_ctrl_offline(ctrl_info))
 7153		return -ENODEV;
 7154
 7155	spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
 7156
 7157	device = sdev->hostdata;
 7158	if (!device) {
 7159		spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 7160		return -ENODEV;
 7161	}
 7162
 7163	memcpy(lunid, device->scsi3addr, sizeof(lunid));
 7164
 7165	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 7166
 7167	return scnprintf(buffer, PAGE_SIZE, "0x%8phN\n", lunid);
 7168}
 7169
 7170#define MAX_PATHS	8
 7171
 7172static ssize_t pqi_path_info_show(struct device *dev,
 7173	struct device_attribute *attr, char *buf)
 7174{
 7175	struct pqi_ctrl_info *ctrl_info;
 7176	struct scsi_device *sdev;
 7177	struct pqi_scsi_dev *device;
 7178	unsigned long flags;
 7179	int i;
 7180	int output_len = 0;
 7181	u8 box;
 7182	u8 bay;
 7183	u8 path_map_index;
 7184	char *active;
 7185	u8 phys_connector[2];
 7186
 7187	sdev = to_scsi_device(dev);
 7188	ctrl_info = shost_to_hba(sdev->host);
 7189
 7190	if (pqi_ctrl_offline(ctrl_info))
 7191		return -ENODEV;
 7192
 7193	spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
 7194
 7195	device = sdev->hostdata;
 7196	if (!device) {
 7197		spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 7198		return -ENODEV;
 7199	}
 7200
 7201	bay = device->bay;
 7202	for (i = 0; i < MAX_PATHS; i++) {
 7203		path_map_index = 1 << i;
 7204		if (i == device->active_path_index)
 7205			active = "Active";
 7206		else if (device->path_map & path_map_index)
 7207			active = "Inactive";
 7208		else
 7209			continue;
 7210
 7211		output_len += scnprintf(buf + output_len,
 7212					PAGE_SIZE - output_len,
 7213					"[%d:%d:%d:%d] %20.20s ",
 7214					ctrl_info->scsi_host->host_no,
 7215					device->bus, device->target,
 7216					device->lun,
 7217					scsi_device_type(device->devtype));
 7218
 7219		if (device->devtype == TYPE_RAID ||
 7220			pqi_is_logical_device(device))
 7221			goto end_buffer;
 7222
 7223		memcpy(&phys_connector, &device->phys_connector[i],
 7224			sizeof(phys_connector));
 7225		if (phys_connector[0] < '0')
 7226			phys_connector[0] = '0';
 7227		if (phys_connector[1] < '0')
 7228			phys_connector[1] = '0';
 7229
 7230		output_len += scnprintf(buf + output_len,
 7231					PAGE_SIZE - output_len,
 7232					"PORT: %.2s ", phys_connector);
 7233
 7234		box = device->box[i];
 7235		if (box != 0 && box != 0xFF)
 7236			output_len += scnprintf(buf + output_len,
 7237						PAGE_SIZE - output_len,
 7238						"BOX: %hhu ", box);
 7239
 7240		if ((device->devtype == TYPE_DISK ||
 7241			device->devtype == TYPE_ZBC) &&
 7242			pqi_expose_device(device))
 7243			output_len += scnprintf(buf + output_len,
 7244						PAGE_SIZE - output_len,
 7245						"BAY: %hhu ", bay);
 7246
 7247end_buffer:
 7248		output_len += scnprintf(buf + output_len,
 7249					PAGE_SIZE - output_len,
 7250					"%s\n", active);
 7251	}
 7252
 7253	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 7254
 7255	return output_len;
 7256}
 7257
 7258static ssize_t pqi_sas_address_show(struct device *dev,
 7259	struct device_attribute *attr, char *buffer)
 7260{
 7261	struct pqi_ctrl_info *ctrl_info;
 7262	struct scsi_device *sdev;
 7263	struct pqi_scsi_dev *device;
 7264	unsigned long flags;
 7265	u64 sas_address;
 7266
 7267	sdev = to_scsi_device(dev);
 7268	ctrl_info = shost_to_hba(sdev->host);
 7269
 7270	if (pqi_ctrl_offline(ctrl_info))
 7271		return -ENODEV;
 7272
 7273	spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
 7274
 7275	device = sdev->hostdata;
 7276	if (!device) {
 7277		spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 7278		return -ENODEV;
 7279	}
 7280
 7281	sas_address = device->sas_address;
 7282
 7283	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 7284
 7285	return scnprintf(buffer, PAGE_SIZE, "0x%016llx\n", sas_address);
 7286}
 7287
 7288static ssize_t pqi_ssd_smart_path_enabled_show(struct device *dev,
 7289	struct device_attribute *attr, char *buffer)
 7290{
 7291	struct pqi_ctrl_info *ctrl_info;
 7292	struct scsi_device *sdev;
 7293	struct pqi_scsi_dev *device;
 7294	unsigned long flags;
 7295
 7296	sdev = to_scsi_device(dev);
 7297	ctrl_info = shost_to_hba(sdev->host);
 7298
 7299	if (pqi_ctrl_offline(ctrl_info))
 7300		return -ENODEV;
 7301
 7302	spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
 7303
 7304	device = sdev->hostdata;
 7305	if (!device) {
 7306		spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 7307		return -ENODEV;
 7308	}
 7309
 7310	buffer[0] = device->raid_bypass_enabled ? '1' : '0';
 7311	buffer[1] = '\n';
 7312	buffer[2] = '\0';
 7313
 7314	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 7315
 7316	return 2;
 7317}
 7318
 7319static ssize_t pqi_raid_level_show(struct device *dev,
 7320	struct device_attribute *attr, char *buffer)
 7321{
 7322	struct pqi_ctrl_info *ctrl_info;
 7323	struct scsi_device *sdev;
 7324	struct pqi_scsi_dev *device;
 7325	unsigned long flags;
 7326	char *raid_level;
 7327
 7328	sdev = to_scsi_device(dev);
 7329	ctrl_info = shost_to_hba(sdev->host);
 7330
 7331	if (pqi_ctrl_offline(ctrl_info))
 7332		return -ENODEV;
 7333
 7334	spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
 7335
 7336	device = sdev->hostdata;
 7337	if (!device) {
 7338		spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 7339		return -ENODEV;
 7340	}
 7341
 7342	if (pqi_is_logical_device(device) && device->devtype == TYPE_DISK)
 7343		raid_level = pqi_raid_level_to_string(device->raid_level);
 7344	else
 7345		raid_level = "N/A";
 7346
 7347	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 7348
 7349	return scnprintf(buffer, PAGE_SIZE, "%s\n", raid_level);
 7350}
 7351
 7352static ssize_t pqi_raid_bypass_cnt_show(struct device *dev,
 7353	struct device_attribute *attr, char *buffer)
 7354{
 7355	struct pqi_ctrl_info *ctrl_info;
 7356	struct scsi_device *sdev;
 7357	struct pqi_scsi_dev *device;
 7358	unsigned long flags;
 7359	unsigned int raid_bypass_cnt;
 7360
 7361	sdev = to_scsi_device(dev);
 7362	ctrl_info = shost_to_hba(sdev->host);
 7363
 7364	if (pqi_ctrl_offline(ctrl_info))
 7365		return -ENODEV;
 7366
 7367	spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
 7368
 7369	device = sdev->hostdata;
 7370	if (!device) {
 7371		spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 7372		return -ENODEV;
 7373	}
 7374
 7375	raid_bypass_cnt = device->raid_bypass_cnt;
 7376
 7377	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 7378
 7379	return scnprintf(buffer, PAGE_SIZE, "0x%x\n", raid_bypass_cnt);
 7380}
 7381
 7382static ssize_t pqi_sas_ncq_prio_enable_show(struct device *dev,
 7383		struct device_attribute *attr, char *buf)
 7384{
 7385	struct pqi_ctrl_info *ctrl_info;
 7386	struct scsi_device *sdev;
 7387	struct pqi_scsi_dev *device;
 7388	unsigned long flags;
 7389	int output_len = 0;
 7390
 7391	sdev = to_scsi_device(dev);
 7392	ctrl_info = shost_to_hba(sdev->host);
 7393
 7394	if (pqi_ctrl_offline(ctrl_info))
 7395		return -ENODEV;
 7396
 7397	spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
 7398
 7399	device = sdev->hostdata;
 7400	if (!device) {
 7401		spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 7402		return -ENODEV;
 7403	}
 7404
 7405	output_len = snprintf(buf, PAGE_SIZE, "%d\n",
 7406				device->ncq_prio_enable);
 7407	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 7408
 7409	return output_len;
 7410}
 7411
 7412static ssize_t pqi_sas_ncq_prio_enable_store(struct device *dev,
 7413			struct device_attribute *attr,
 7414			const char *buf, size_t count)
 7415{
 7416	struct pqi_ctrl_info *ctrl_info;
 7417	struct scsi_device *sdev;
 7418	struct pqi_scsi_dev *device;
 7419	unsigned long flags;
 7420	u8 ncq_prio_enable = 0;
 7421
 7422	if (kstrtou8(buf, 0, &ncq_prio_enable))
 7423		return -EINVAL;
 7424
 7425	sdev = to_scsi_device(dev);
 7426	ctrl_info = shost_to_hba(sdev->host);
 7427
 7428	spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
 7429
 7430	device = sdev->hostdata;
 7431
 7432	if (!device) {
 7433		spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 7434		return -ENODEV;
 7435	}
 7436
 7437	if (!device->ncq_prio_support) {
 7438		spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 7439		return -EINVAL;
 7440	}
 7441
 7442	device->ncq_prio_enable = ncq_prio_enable;
 7443
 7444	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
 7445
 7446	return  strlen(buf);
 7447}
 7448
 7449static ssize_t pqi_numa_node_show(struct device *dev,
 7450	struct device_attribute *attr, char *buffer)
 7451{
 7452	struct scsi_device *sdev;
 7453	struct pqi_ctrl_info *ctrl_info;
 7454
 7455	sdev = to_scsi_device(dev);
 7456	ctrl_info = shost_to_hba(sdev->host);
 7457
 7458	return scnprintf(buffer, PAGE_SIZE, "%d\n", ctrl_info->numa_node);
 7459}
 7460
 7461static DEVICE_ATTR(lunid, 0444, pqi_lunid_show, NULL);
 7462static DEVICE_ATTR(unique_id, 0444, pqi_unique_id_show, NULL);
 7463static DEVICE_ATTR(path_info, 0444, pqi_path_info_show, NULL);
 7464static DEVICE_ATTR(sas_address, 0444, pqi_sas_address_show, NULL);
 7465static DEVICE_ATTR(ssd_smart_path_enabled, 0444, pqi_ssd_smart_path_enabled_show, NULL);
 7466static DEVICE_ATTR(raid_level, 0444, pqi_raid_level_show, NULL);
 7467static DEVICE_ATTR(raid_bypass_cnt, 0444, pqi_raid_bypass_cnt_show, NULL);
 7468static DEVICE_ATTR(sas_ncq_prio_enable, 0644,
 7469		pqi_sas_ncq_prio_enable_show, pqi_sas_ncq_prio_enable_store);
 7470static DEVICE_ATTR(numa_node, 0444, pqi_numa_node_show, NULL);
 7471
 7472static struct attribute *pqi_sdev_attrs[] = {
 7473	&dev_attr_lunid.attr,
 7474	&dev_attr_unique_id.attr,
 7475	&dev_attr_path_info.attr,
 7476	&dev_attr_sas_address.attr,
 7477	&dev_attr_ssd_smart_path_enabled.attr,
 7478	&dev_attr_raid_level.attr,
 7479	&dev_attr_raid_bypass_cnt.attr,
 7480	&dev_attr_sas_ncq_prio_enable.attr,
 7481	&dev_attr_numa_node.attr,
 7482	NULL
 7483};
 7484
 7485ATTRIBUTE_GROUPS(pqi_sdev);
 7486
 7487static const struct scsi_host_template pqi_driver_template = {
 7488	.module = THIS_MODULE,
 7489	.name = DRIVER_NAME_SHORT,
 7490	.proc_name = DRIVER_NAME_SHORT,
 7491	.queuecommand = pqi_scsi_queue_command,
 7492	.scan_start = pqi_scan_start,
 7493	.scan_finished = pqi_scan_finished,
 7494	.this_id = -1,
 7495	.eh_device_reset_handler = pqi_eh_device_reset_handler,
 7496	.eh_abort_handler = pqi_eh_abort_handler,
 7497	.ioctl = pqi_ioctl,
 7498	.slave_alloc = pqi_slave_alloc,
 7499	.slave_configure = pqi_slave_configure,
 7500	.slave_destroy = pqi_slave_destroy,
 7501	.map_queues = pqi_map_queues,
 7502	.sdev_groups = pqi_sdev_groups,
 7503	.shost_groups = pqi_shost_groups,
 7504	.cmd_size = sizeof(struct pqi_cmd_priv),
 7505};
 7506
 7507static int pqi_register_scsi(struct pqi_ctrl_info *ctrl_info)
 7508{
 7509	int rc;
 7510	struct Scsi_Host *shost;
 7511
 7512	shost = scsi_host_alloc(&pqi_driver_template, sizeof(ctrl_info));
 7513	if (!shost) {
 7514		dev_err(&ctrl_info->pci_dev->dev, "scsi_host_alloc failed\n");
 7515		return -ENOMEM;
 7516	}
 7517
 7518	shost->io_port = 0;
 7519	shost->n_io_port = 0;
 7520	shost->this_id = -1;
 7521	shost->max_channel = PQI_MAX_BUS;
 7522	shost->max_cmd_len = MAX_COMMAND_SIZE;
 7523	shost->max_lun = PQI_MAX_LUNS_PER_DEVICE;
 7524	shost->max_id = ~0;
 7525	shost->max_sectors = ctrl_info->max_sectors;
 7526	shost->can_queue = ctrl_info->scsi_ml_can_queue;
 7527	shost->cmd_per_lun = shost->can_queue;
 7528	shost->sg_tablesize = ctrl_info->sg_tablesize;
 7529	shost->transportt = pqi_sas_transport_template;
 7530	shost->irq = pci_irq_vector(ctrl_info->pci_dev, 0);
 7531	shost->unique_id = shost->irq;
 7532	shost->nr_hw_queues = ctrl_info->num_queue_groups;
 7533	shost->host_tagset = 1;
 7534	shost->hostdata[0] = (unsigned long)ctrl_info;
 7535
 7536	rc = scsi_add_host(shost, &ctrl_info->pci_dev->dev);
 7537	if (rc) {
 7538		dev_err(&ctrl_info->pci_dev->dev, "scsi_add_host failed\n");
 7539		goto free_host;
 7540	}
 7541
 7542	rc = pqi_add_sas_host(shost, ctrl_info);
 7543	if (rc) {
 7544		dev_err(&ctrl_info->pci_dev->dev, "add SAS host failed\n");
 7545		goto remove_host;
 7546	}
 7547
 7548	ctrl_info->scsi_host = shost;
 7549
 7550	return 0;
 7551
 7552remove_host:
 7553	scsi_remove_host(shost);
 7554free_host:
 7555	scsi_host_put(shost);
 7556
 7557	return rc;
 7558}
 7559
 7560static void pqi_unregister_scsi(struct pqi_ctrl_info *ctrl_info)
 7561{
 7562	struct Scsi_Host *shost;
 7563
 7564	pqi_delete_sas_host(ctrl_info);
 7565
 7566	shost = ctrl_info->scsi_host;
 7567	if (!shost)
 7568		return;
 7569
 7570	scsi_remove_host(shost);
 7571	scsi_host_put(shost);
 7572}
 7573
 7574static int pqi_wait_for_pqi_reset_completion(struct pqi_ctrl_info *ctrl_info)
 7575{
 7576	int rc = 0;
 7577	struct pqi_device_registers __iomem *pqi_registers;
 7578	unsigned long timeout;
 7579	unsigned int timeout_msecs;
 7580	union pqi_reset_register reset_reg;
 7581
 7582	pqi_registers = ctrl_info->pqi_registers;
 7583	timeout_msecs = readw(&pqi_registers->max_reset_timeout) * 100;
 7584	timeout = msecs_to_jiffies(timeout_msecs) + jiffies;
 7585
 7586	while (1) {
 7587		msleep(PQI_RESET_POLL_INTERVAL_MSECS);
 7588		reset_reg.all_bits = readl(&pqi_registers->device_reset);
 7589		if (reset_reg.bits.reset_action == PQI_RESET_ACTION_COMPLETED)
 7590			break;
 7591		if (!sis_is_firmware_running(ctrl_info)) {
 7592			rc = -ENXIO;
 7593			break;
 7594		}
 7595		if (time_after(jiffies, timeout)) {
 7596			rc = -ETIMEDOUT;
 7597			break;
 7598		}
 7599	}
 7600
 7601	return rc;
 7602}
 7603
 7604static int pqi_reset(struct pqi_ctrl_info *ctrl_info)
 7605{
 7606	int rc;
 7607	union pqi_reset_register reset_reg;
 7608
 7609	if (ctrl_info->pqi_reset_quiesce_supported) {
 7610		rc = sis_pqi_reset_quiesce(ctrl_info);
 7611		if (rc) {
 7612			dev_err(&ctrl_info->pci_dev->dev,
 7613				"PQI reset failed during quiesce with error %d\n", rc);
 7614			return rc;
 7615		}
 7616	}
 7617
 7618	reset_reg.all_bits = 0;
 7619	reset_reg.bits.reset_type = PQI_RESET_TYPE_HARD_RESET;
 7620	reset_reg.bits.reset_action = PQI_RESET_ACTION_RESET;
 7621
 7622	writel(reset_reg.all_bits, &ctrl_info->pqi_registers->device_reset);
 7623
 7624	rc = pqi_wait_for_pqi_reset_completion(ctrl_info);
 7625	if (rc)
 7626		dev_err(&ctrl_info->pci_dev->dev,
 7627			"PQI reset failed with error %d\n", rc);
 7628
 7629	return rc;
 7630}
 7631
 7632static int pqi_get_ctrl_serial_number(struct pqi_ctrl_info *ctrl_info)
 7633{
 7634	int rc;
 7635	struct bmic_sense_subsystem_info *sense_info;
 7636
 7637	sense_info = kzalloc(sizeof(*sense_info), GFP_KERNEL);
 7638	if (!sense_info)
 7639		return -ENOMEM;
 7640
 7641	rc = pqi_sense_subsystem_info(ctrl_info, sense_info);
 7642	if (rc)
 7643		goto out;
 7644
 7645	memcpy(ctrl_info->serial_number, sense_info->ctrl_serial_number,
 7646		sizeof(sense_info->ctrl_serial_number));
 7647	ctrl_info->serial_number[sizeof(sense_info->ctrl_serial_number)] = '\0';
 7648
 7649out:
 7650	kfree(sense_info);
 7651
 7652	return rc;
 7653}
 7654
 7655static int pqi_get_ctrl_product_details(struct pqi_ctrl_info *ctrl_info)
 7656{
 7657	int rc;
 7658	struct bmic_identify_controller *identify;
 7659
 7660	identify = kmalloc(sizeof(*identify), GFP_KERNEL);
 7661	if (!identify)
 7662		return -ENOMEM;
 7663
 7664	rc = pqi_identify_controller(ctrl_info, identify);
 7665	if (rc)
 7666		goto out;
 7667
 7668	if (get_unaligned_le32(&identify->extra_controller_flags) &
 7669		BMIC_IDENTIFY_EXTRA_FLAGS_LONG_FW_VERSION_SUPPORTED) {
 7670		memcpy(ctrl_info->firmware_version,
 7671			identify->firmware_version_long,
 7672			sizeof(identify->firmware_version_long));
 7673	} else {
 7674		memcpy(ctrl_info->firmware_version,
 7675			identify->firmware_version_short,
 7676			sizeof(identify->firmware_version_short));
 7677		ctrl_info->firmware_version
 7678			[sizeof(identify->firmware_version_short)] = '\0';
 7679		snprintf(ctrl_info->firmware_version +
 7680			strlen(ctrl_info->firmware_version),
 7681			sizeof(ctrl_info->firmware_version) -
 7682			sizeof(identify->firmware_version_short),
 7683			"-%u",
 7684			get_unaligned_le16(&identify->firmware_build_number));
 7685	}
 7686
 7687	memcpy(ctrl_info->model, identify->product_id,
 7688		sizeof(identify->product_id));
 7689	ctrl_info->model[sizeof(identify->product_id)] = '\0';
 7690
 7691	memcpy(ctrl_info->vendor, identify->vendor_id,
 7692		sizeof(identify->vendor_id));
 7693	ctrl_info->vendor[sizeof(identify->vendor_id)] = '\0';
 7694
 7695	dev_info(&ctrl_info->pci_dev->dev,
 7696		"Firmware version: %s\n", ctrl_info->firmware_version);
 7697
 7698out:
 7699	kfree(identify);
 7700
 7701	return rc;
 7702}
 7703
 7704struct pqi_config_table_section_info {
 7705	struct pqi_ctrl_info *ctrl_info;
 7706	void		*section;
 7707	u32		section_offset;
 7708	void __iomem	*section_iomem_addr;
 7709};
 7710
 7711static inline bool pqi_is_firmware_feature_supported(
 7712	struct pqi_config_table_firmware_features *firmware_features,
 7713	unsigned int bit_position)
 7714{
 7715	unsigned int byte_index;
 7716
 7717	byte_index = bit_position / BITS_PER_BYTE;
 7718
 7719	if (byte_index >= le16_to_cpu(firmware_features->num_elements))
 7720		return false;
 7721
 7722	return firmware_features->features_supported[byte_index] &
 7723		(1 << (bit_position % BITS_PER_BYTE)) ? true : false;
 7724}
 7725
 7726static inline bool pqi_is_firmware_feature_enabled(
 7727	struct pqi_config_table_firmware_features *firmware_features,
 7728	void __iomem *firmware_features_iomem_addr,
 7729	unsigned int bit_position)
 7730{
 7731	unsigned int byte_index;
 7732	u8 __iomem *features_enabled_iomem_addr;
 7733
 7734	byte_index = (bit_position / BITS_PER_BYTE) +
 7735		(le16_to_cpu(firmware_features->num_elements) * 2);
 7736
 7737	features_enabled_iomem_addr = firmware_features_iomem_addr +
 7738		offsetof(struct pqi_config_table_firmware_features,
 7739			features_supported) + byte_index;
 7740
 7741	return *((__force u8 *)features_enabled_iomem_addr) &
 7742		(1 << (bit_position % BITS_PER_BYTE)) ? true : false;
 7743}
 7744
 7745static inline void pqi_request_firmware_feature(
 7746	struct pqi_config_table_firmware_features *firmware_features,
 7747	unsigned int bit_position)
 7748{
 7749	unsigned int byte_index;
 7750
 7751	byte_index = (bit_position / BITS_PER_BYTE) +
 7752		le16_to_cpu(firmware_features->num_elements);
 7753
 7754	firmware_features->features_supported[byte_index] |=
 7755		(1 << (bit_position % BITS_PER_BYTE));
 7756}
 7757
 7758static int pqi_config_table_update(struct pqi_ctrl_info *ctrl_info,
 7759	u16 first_section, u16 last_section)
 7760{
 7761	struct pqi_vendor_general_request request;
 7762
 7763	memset(&request, 0, sizeof(request));
 7764
 7765	request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL;
 7766	put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
 7767		&request.header.iu_length);
 7768	put_unaligned_le16(PQI_VENDOR_GENERAL_CONFIG_TABLE_UPDATE,
 7769		&request.function_code);
 7770	put_unaligned_le16(first_section,
 7771		&request.data.config_table_update.first_section);
 7772	put_unaligned_le16(last_section,
 7773		&request.data.config_table_update.last_section);
 7774
 7775	return pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, NULL);
 7776}
 7777
 7778static int pqi_enable_firmware_features(struct pqi_ctrl_info *ctrl_info,
 7779	struct pqi_config_table_firmware_features *firmware_features,
 7780	void __iomem *firmware_features_iomem_addr)
 7781{
 7782	void *features_requested;
 7783	void __iomem *features_requested_iomem_addr;
 7784	void __iomem *host_max_known_feature_iomem_addr;
 7785
 7786	features_requested = firmware_features->features_supported +
 7787		le16_to_cpu(firmware_features->num_elements);
 7788
 7789	features_requested_iomem_addr = firmware_features_iomem_addr +
 7790		(features_requested - (void *)firmware_features);
 7791
 7792	memcpy_toio(features_requested_iomem_addr, features_requested,
 7793		le16_to_cpu(firmware_features->num_elements));
 7794
 7795	if (pqi_is_firmware_feature_supported(firmware_features,
 7796		PQI_FIRMWARE_FEATURE_MAX_KNOWN_FEATURE)) {
 7797		host_max_known_feature_iomem_addr =
 7798			features_requested_iomem_addr +
 7799			(le16_to_cpu(firmware_features->num_elements) * 2) +
 7800			sizeof(__le16);
 7801		writeb(PQI_FIRMWARE_FEATURE_MAXIMUM & 0xFF, host_max_known_feature_iomem_addr);
 7802		writeb((PQI_FIRMWARE_FEATURE_MAXIMUM & 0xFF00) >> 8, host_max_known_feature_iomem_addr + 1);
 7803	}
 7804
 7805	return pqi_config_table_update(ctrl_info,
 7806		PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES,
 7807		PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES);
 7808}
 7809
 7810struct pqi_firmware_feature {
 7811	char		*feature_name;
 7812	unsigned int	feature_bit;
 7813	bool		supported;
 7814	bool		enabled;
 7815	void (*feature_status)(struct pqi_ctrl_info *ctrl_info,
 7816		struct pqi_firmware_feature *firmware_feature);
 7817};
 7818
 7819static void pqi_firmware_feature_status(struct pqi_ctrl_info *ctrl_info,
 7820	struct pqi_firmware_feature *firmware_feature)
 7821{
 7822	if (!firmware_feature->supported) {
 7823		dev_info(&ctrl_info->pci_dev->dev, "%s not supported by controller\n",
 7824			firmware_feature->feature_name);
 7825		return;
 7826	}
 7827
 7828	if (firmware_feature->enabled) {
 7829		dev_info(&ctrl_info->pci_dev->dev,
 7830			"%s enabled\n", firmware_feature->feature_name);
 7831		return;
 7832	}
 7833
 7834	dev_err(&ctrl_info->pci_dev->dev, "failed to enable %s\n",
 7835		firmware_feature->feature_name);
 7836}
 7837
 7838static void pqi_ctrl_update_feature_flags(struct pqi_ctrl_info *ctrl_info,
 7839	struct pqi_firmware_feature *firmware_feature)
 7840{
 7841	switch (firmware_feature->feature_bit) {
 7842	case PQI_FIRMWARE_FEATURE_RAID_1_WRITE_BYPASS:
 7843		ctrl_info->enable_r1_writes = firmware_feature->enabled;
 7844		break;
 7845	case PQI_FIRMWARE_FEATURE_RAID_5_WRITE_BYPASS:
 7846		ctrl_info->enable_r5_writes = firmware_feature->enabled;
 7847		break;
 7848	case PQI_FIRMWARE_FEATURE_RAID_6_WRITE_BYPASS:
 7849		ctrl_info->enable_r6_writes = firmware_feature->enabled;
 7850		break;
 7851	case PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE:
 7852		ctrl_info->soft_reset_handshake_supported =
 7853			firmware_feature->enabled &&
 7854			pqi_read_soft_reset_status(ctrl_info);
 7855		break;
 7856	case PQI_FIRMWARE_FEATURE_RAID_IU_TIMEOUT:
 7857		ctrl_info->raid_iu_timeout_supported = firmware_feature->enabled;
 7858		break;
 7859	case PQI_FIRMWARE_FEATURE_TMF_IU_TIMEOUT:
 7860		ctrl_info->tmf_iu_timeout_supported = firmware_feature->enabled;
 7861		break;
 7862	case PQI_FIRMWARE_FEATURE_FW_TRIAGE:
 7863		ctrl_info->firmware_triage_supported = firmware_feature->enabled;
 7864		pqi_save_fw_triage_setting(ctrl_info, firmware_feature->enabled);
 7865		break;
 7866	case PQI_FIRMWARE_FEATURE_RPL_EXTENDED_FORMAT_4_5:
 7867		ctrl_info->rpl_extended_format_4_5_supported = firmware_feature->enabled;
 7868		break;
 7869	case PQI_FIRMWARE_FEATURE_MULTI_LUN_DEVICE_SUPPORT:
 7870		ctrl_info->multi_lun_device_supported = firmware_feature->enabled;
 7871		break;
 7872	}
 7873
 7874	pqi_firmware_feature_status(ctrl_info, firmware_feature);
 7875}
 7876
 7877static inline void pqi_firmware_feature_update(struct pqi_ctrl_info *ctrl_info,
 7878	struct pqi_firmware_feature *firmware_feature)
 7879{
 7880	if (firmware_feature->feature_status)
 7881		firmware_feature->feature_status(ctrl_info, firmware_feature);
 7882}
 7883
 7884static DEFINE_MUTEX(pqi_firmware_features_mutex);
 7885
 7886static struct pqi_firmware_feature pqi_firmware_features[] = {
 7887	{
 7888		.feature_name = "Online Firmware Activation",
 7889		.feature_bit = PQI_FIRMWARE_FEATURE_OFA,
 7890		.feature_status = pqi_firmware_feature_status,
 7891	},
 7892	{
 7893		.feature_name = "Serial Management Protocol",
 7894		.feature_bit = PQI_FIRMWARE_FEATURE_SMP,
 7895		.feature_status = pqi_firmware_feature_status,
 7896	},
 7897	{
 7898		.feature_name = "Maximum Known Feature",
 7899		.feature_bit = PQI_FIRMWARE_FEATURE_MAX_KNOWN_FEATURE,
 7900		.feature_status = pqi_firmware_feature_status,
 7901	},
 7902	{
 7903		.feature_name = "RAID 0 Read Bypass",
 7904		.feature_bit = PQI_FIRMWARE_FEATURE_RAID_0_READ_BYPASS,
 7905		.feature_status = pqi_firmware_feature_status,
 7906	},
 7907	{
 7908		.feature_name = "RAID 1 Read Bypass",
 7909		.feature_bit = PQI_FIRMWARE_FEATURE_RAID_1_READ_BYPASS,
 7910		.feature_status = pqi_firmware_feature_status,
 7911	},
 7912	{
 7913		.feature_name = "RAID 5 Read Bypass",
 7914		.feature_bit = PQI_FIRMWARE_FEATURE_RAID_5_READ_BYPASS,
 7915		.feature_status = pqi_firmware_feature_status,
 7916	},
 7917	{
 7918		.feature_name = "RAID 6 Read Bypass",
 7919		.feature_bit = PQI_FIRMWARE_FEATURE_RAID_6_READ_BYPASS,
 7920		.feature_status = pqi_firmware_feature_status,
 7921	},
 7922	{
 7923		.feature_name = "RAID 0 Write Bypass",
 7924		.feature_bit = PQI_FIRMWARE_FEATURE_RAID_0_WRITE_BYPASS,
 7925		.feature_status = pqi_firmware_feature_status,
 7926	},
 7927	{
 7928		.feature_name = "RAID 1 Write Bypass",
 7929		.feature_bit = PQI_FIRMWARE_FEATURE_RAID_1_WRITE_BYPASS,
 7930		.feature_status = pqi_ctrl_update_feature_flags,
 7931	},
 7932	{
 7933		.feature_name = "RAID 5 Write Bypass",
 7934		.feature_bit = PQI_FIRMWARE_FEATURE_RAID_5_WRITE_BYPASS,
 7935		.feature_status = pqi_ctrl_update_feature_flags,
 7936	},
 7937	{
 7938		.feature_name = "RAID 6 Write Bypass",
 7939		.feature_bit = PQI_FIRMWARE_FEATURE_RAID_6_WRITE_BYPASS,
 7940		.feature_status = pqi_ctrl_update_feature_flags,
 7941	},
 7942	{
 7943		.feature_name = "New Soft Reset Handshake",
 7944		.feature_bit = PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE,
 7945		.feature_status = pqi_ctrl_update_feature_flags,
 7946	},
 7947	{
 7948		.feature_name = "RAID IU Timeout",
 7949		.feature_bit = PQI_FIRMWARE_FEATURE_RAID_IU_TIMEOUT,
 7950		.feature_status = pqi_ctrl_update_feature_flags,
 7951	},
 7952	{
 7953		.feature_name = "TMF IU Timeout",
 7954		.feature_bit = PQI_FIRMWARE_FEATURE_TMF_IU_TIMEOUT,
 7955		.feature_status = pqi_ctrl_update_feature_flags,
 7956	},
 7957	{
 7958		.feature_name = "RAID Bypass on encrypted logical volumes on NVMe",
 7959		.feature_bit = PQI_FIRMWARE_FEATURE_RAID_BYPASS_ON_ENCRYPTED_NVME,
 7960		.feature_status = pqi_firmware_feature_status,
 7961	},
 7962	{
 7963		.feature_name = "Firmware Triage",
 7964		.feature_bit = PQI_FIRMWARE_FEATURE_FW_TRIAGE,
 7965		.feature_status = pqi_ctrl_update_feature_flags,
 7966	},
 7967	{
 7968		.feature_name = "RPL Extended Formats 4 and 5",
 7969		.feature_bit = PQI_FIRMWARE_FEATURE_RPL_EXTENDED_FORMAT_4_5,
 7970		.feature_status = pqi_ctrl_update_feature_flags,
 7971	},
 7972	{
 7973		.feature_name = "Multi-LUN Target",
 7974		.feature_bit = PQI_FIRMWARE_FEATURE_MULTI_LUN_DEVICE_SUPPORT,
 7975		.feature_status = pqi_ctrl_update_feature_flags,
 7976	},
 7977};
 7978
 7979static void pqi_process_firmware_features(
 7980	struct pqi_config_table_section_info *section_info)
 7981{
 7982	int rc;
 7983	struct pqi_ctrl_info *ctrl_info;
 7984	struct pqi_config_table_firmware_features *firmware_features;
 7985	void __iomem *firmware_features_iomem_addr;
 7986	unsigned int i;
 7987	unsigned int num_features_supported;
 7988
 7989	ctrl_info = section_info->ctrl_info;
 7990	firmware_features = section_info->section;
 7991	firmware_features_iomem_addr = section_info->section_iomem_addr;
 7992
 7993	for (i = 0, num_features_supported = 0;
 7994		i < ARRAY_SIZE(pqi_firmware_features); i++) {
 7995		if (pqi_is_firmware_feature_supported(firmware_features,
 7996			pqi_firmware_features[i].feature_bit)) {
 7997			pqi_firmware_features[i].supported = true;
 7998			num_features_supported++;
 7999		} else {
 8000			pqi_firmware_feature_update(ctrl_info,
 8001				&pqi_firmware_features[i]);
 8002		}
 8003	}
 8004
 8005	if (num_features_supported == 0)
 8006		return;
 8007
 8008	for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
 8009		if (!pqi_firmware_features[i].supported)
 8010			continue;
 8011		pqi_request_firmware_feature(firmware_features,
 8012			pqi_firmware_features[i].feature_bit);
 8013	}
 8014
 8015	rc = pqi_enable_firmware_features(ctrl_info, firmware_features,
 8016		firmware_features_iomem_addr);
 8017	if (rc) {
 8018		dev_err(&ctrl_info->pci_dev->dev,
 8019			"failed to enable firmware features in PQI configuration table\n");
 8020		for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
 8021			if (!pqi_firmware_features[i].supported)
 8022				continue;
 8023			pqi_firmware_feature_update(ctrl_info,
 8024				&pqi_firmware_features[i]);
 8025		}
 8026		return;
 8027	}
 8028
 8029	for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
 8030		if (!pqi_firmware_features[i].supported)
 8031			continue;
 8032		if (pqi_is_firmware_feature_enabled(firmware_features,
 8033			firmware_features_iomem_addr,
 8034			pqi_firmware_features[i].feature_bit)) {
 8035				pqi_firmware_features[i].enabled = true;
 8036		}
 8037		pqi_firmware_feature_update(ctrl_info,
 8038			&pqi_firmware_features[i]);
 8039	}
 8040}
 8041
 8042static void pqi_init_firmware_features(void)
 8043{
 8044	unsigned int i;
 8045
 8046	for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
 8047		pqi_firmware_features[i].supported = false;
 8048		pqi_firmware_features[i].enabled = false;
 8049	}
 8050}
 8051
 8052static void pqi_process_firmware_features_section(
 8053	struct pqi_config_table_section_info *section_info)
 8054{
 8055	mutex_lock(&pqi_firmware_features_mutex);
 8056	pqi_init_firmware_features();
 8057	pqi_process_firmware_features(section_info);
 8058	mutex_unlock(&pqi_firmware_features_mutex);
 8059}
 8060
 8061/*
 8062 * Reset all controller settings that can be initialized during the processing
 8063 * of the PQI Configuration Table.
 8064 */
 8065
 8066static void pqi_ctrl_reset_config(struct pqi_ctrl_info *ctrl_info)
 8067{
 8068	ctrl_info->heartbeat_counter = NULL;
 8069	ctrl_info->soft_reset_status = NULL;
 8070	ctrl_info->soft_reset_handshake_supported = false;
 8071	ctrl_info->enable_r1_writes = false;
 8072	ctrl_info->enable_r5_writes = false;
 8073	ctrl_info->enable_r6_writes = false;
 8074	ctrl_info->raid_iu_timeout_supported = false;
 8075	ctrl_info->tmf_iu_timeout_supported = false;
 8076	ctrl_info->firmware_triage_supported = false;
 8077	ctrl_info->rpl_extended_format_4_5_supported = false;
 8078	ctrl_info->multi_lun_device_supported = false;
 8079}
 8080
 8081static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info)
 8082{
 8083	u32 table_length;
 8084	u32 section_offset;
 8085	bool firmware_feature_section_present;
 8086	void __iomem *table_iomem_addr;
 8087	struct pqi_config_table *config_table;
 8088	struct pqi_config_table_section_header *section;
 8089	struct pqi_config_table_section_info section_info;
 8090	struct pqi_config_table_section_info feature_section_info = {0};
 8091
 8092	table_length = ctrl_info->config_table_length;
 8093	if (table_length == 0)
 8094		return 0;
 8095
 8096	config_table = kmalloc(table_length, GFP_KERNEL);
 8097	if (!config_table) {
 8098		dev_err(&ctrl_info->pci_dev->dev,
 8099			"failed to allocate memory for PQI configuration table\n");
 8100		return -ENOMEM;
 8101	}
 8102
 8103	/*
 8104	 * Copy the config table contents from I/O memory space into the
 8105	 * temporary buffer.
 8106	 */
 8107	table_iomem_addr = ctrl_info->iomem_base + ctrl_info->config_table_offset;
 8108	memcpy_fromio(config_table, table_iomem_addr, table_length);
 8109
 8110	firmware_feature_section_present = false;
 8111	section_info.ctrl_info = ctrl_info;
 8112	section_offset = get_unaligned_le32(&config_table->first_section_offset);
 8113
 8114	while (section_offset) {
 8115		section = (void *)config_table + section_offset;
 8116
 8117		section_info.section = section;
 8118		section_info.section_offset = section_offset;
 8119		section_info.section_iomem_addr = table_iomem_addr + section_offset;
 8120
 8121		switch (get_unaligned_le16(&section->section_id)) {
 8122		case PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES:
 8123			firmware_feature_section_present = true;
 8124			feature_section_info = section_info;
 8125			break;
 8126		case PQI_CONFIG_TABLE_SECTION_HEARTBEAT:
 8127			if (pqi_disable_heartbeat)
 8128				dev_warn(&ctrl_info->pci_dev->dev,
 8129				"heartbeat disabled by module parameter\n");
 8130			else
 8131				ctrl_info->heartbeat_counter =
 8132					table_iomem_addr +
 8133					section_offset +
 8134					offsetof(struct pqi_config_table_heartbeat,
 8135						heartbeat_counter);
 8136			break;
 8137		case PQI_CONFIG_TABLE_SECTION_SOFT_RESET:
 8138			ctrl_info->soft_reset_status =
 8139				table_iomem_addr +
 8140				section_offset +
 8141				offsetof(struct pqi_config_table_soft_reset,
 8142					soft_reset_status);
 8143			break;
 8144		}
 8145
 8146		section_offset = get_unaligned_le16(&section->next_section_offset);
 8147	}
 8148
 8149	/*
 8150	 * We process the firmware feature section after all other sections
 8151	 * have been processed so that the feature bit callbacks can take
 8152	 * into account the settings configured by other sections.
 8153	 */
 8154	if (firmware_feature_section_present)
 8155		pqi_process_firmware_features_section(&feature_section_info);
 8156
 8157	kfree(config_table);
 8158
 8159	return 0;
 8160}
 8161
 8162/* Switches the controller from PQI mode back into SIS mode. */
 8163
 8164static int pqi_revert_to_sis_mode(struct pqi_ctrl_info *ctrl_info)
 8165{
 8166	int rc;
 8167
 8168	pqi_change_irq_mode(ctrl_info, IRQ_MODE_NONE);
 8169	rc = pqi_reset(ctrl_info);
 8170	if (rc)
 8171		return rc;
 8172	rc = sis_reenable_sis_mode(ctrl_info);
 8173	if (rc) {
 8174		dev_err(&ctrl_info->pci_dev->dev,
 8175			"re-enabling SIS mode failed with error %d\n", rc);
 8176		return rc;
 8177	}
 8178	pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
 8179
 8180	return 0;
 8181}
 8182
 8183/*
 8184 * If the controller isn't already in SIS mode, this function forces it into
 8185 * SIS mode.
 8186 */
 8187
 8188static int pqi_force_sis_mode(struct pqi_ctrl_info *ctrl_info)
 8189{
 8190	if (!sis_is_firmware_running(ctrl_info))
 8191		return -ENXIO;
 8192
 8193	if (pqi_get_ctrl_mode(ctrl_info) == SIS_MODE)
 8194		return 0;
 8195
 8196	if (sis_is_kernel_up(ctrl_info)) {
 8197		pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
 8198		return 0;
 8199	}
 8200
 8201	return pqi_revert_to_sis_mode(ctrl_info);
 8202}
 8203
 8204static void pqi_perform_lockup_action(void)
 8205{
 8206	switch (pqi_lockup_action) {
 8207	case PANIC:
 8208		panic("FATAL: Smart Family Controller lockup detected");
 8209		break;
 8210	case REBOOT:
 8211		emergency_restart();
 8212		break;
 8213	case NONE:
 8214	default:
 8215		break;
 8216	}
 8217}
 8218
 8219static int pqi_ctrl_init(struct pqi_ctrl_info *ctrl_info)
 8220{
 8221	int rc;
 8222	u32 product_id;
 8223
 8224	if (reset_devices) {
 8225		if (pqi_is_fw_triage_supported(ctrl_info)) {
 8226			rc = sis_wait_for_fw_triage_completion(ctrl_info);
 8227			if (rc)
 8228				return rc;
 8229		}
 8230		sis_soft_reset(ctrl_info);
 8231		ssleep(PQI_POST_RESET_DELAY_SECS);
 8232	} else {
 8233		rc = pqi_force_sis_mode(ctrl_info);
 8234		if (rc)
 8235			return rc;
 8236	}
 8237
 8238	/*
 8239	 * Wait until the controller is ready to start accepting SIS
 8240	 * commands.
 8241	 */
 8242	rc = sis_wait_for_ctrl_ready(ctrl_info);
 8243	if (rc) {
 8244		if (reset_devices) {
 8245			dev_err(&ctrl_info->pci_dev->dev,
 8246				"kdump init failed with error %d\n", rc);
 8247			pqi_lockup_action = REBOOT;
 8248			pqi_perform_lockup_action();
 8249		}
 8250		return rc;
 8251	}
 8252
 8253	/*
 8254	 * Get the controller properties.  This allows us to determine
 8255	 * whether or not it supports PQI mode.
 8256	 */
 8257	rc = sis_get_ctrl_properties(ctrl_info);
 8258	if (rc) {
 8259		dev_err(&ctrl_info->pci_dev->dev,
 8260			"error obtaining controller properties\n");
 8261		return rc;
 8262	}
 8263
 8264	rc = sis_get_pqi_capabilities(ctrl_info);
 8265	if (rc) {
 8266		dev_err(&ctrl_info->pci_dev->dev,
 8267			"error obtaining controller capabilities\n");
 8268		return rc;
 8269	}
 8270
 8271	product_id = sis_get_product_id(ctrl_info);
 8272	ctrl_info->product_id = (u8)product_id;
 8273	ctrl_info->product_revision = (u8)(product_id >> 8);
 8274
 8275	if (reset_devices) {
 8276		if (ctrl_info->max_outstanding_requests >
 8277			PQI_MAX_OUTSTANDING_REQUESTS_KDUMP)
 8278				ctrl_info->max_outstanding_requests =
 8279					PQI_MAX_OUTSTANDING_REQUESTS_KDUMP;
 8280	} else {
 8281		if (ctrl_info->max_outstanding_requests >
 8282			PQI_MAX_OUTSTANDING_REQUESTS)
 8283				ctrl_info->max_outstanding_requests =
 8284					PQI_MAX_OUTSTANDING_REQUESTS;
 8285	}
 8286
 8287	pqi_calculate_io_resources(ctrl_info);
 8288
 8289	rc = pqi_alloc_error_buffer(ctrl_info);
 8290	if (rc) {
 8291		dev_err(&ctrl_info->pci_dev->dev,
 8292			"failed to allocate PQI error buffer\n");
 8293		return rc;
 8294	}
 8295
 8296	/*
 8297	 * If the function we are about to call succeeds, the
 8298	 * controller will transition from legacy SIS mode
 8299	 * into PQI mode.
 8300	 */
 8301	rc = sis_init_base_struct_addr(ctrl_info);
 8302	if (rc) {
 8303		dev_err(&ctrl_info->pci_dev->dev,
 8304			"error initializing PQI mode\n");
 8305		return rc;
 8306	}
 8307
 8308	/* Wait for the controller to complete the SIS -> PQI transition. */
 8309	rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
 8310	if (rc) {
 8311		dev_err(&ctrl_info->pci_dev->dev,
 8312			"transition to PQI mode failed\n");
 8313		return rc;
 8314	}
 8315
 8316	/* From here on, we are running in PQI mode. */
 8317	ctrl_info->pqi_mode_enabled = true;
 8318	pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
 8319
 8320	rc = pqi_alloc_admin_queues(ctrl_info);
 8321	if (rc) {
 8322		dev_err(&ctrl_info->pci_dev->dev,
 8323			"failed to allocate admin queues\n");
 8324		return rc;
 8325	}
 8326
 8327	rc = pqi_create_admin_queues(ctrl_info);
 8328	if (rc) {
 8329		dev_err(&ctrl_info->pci_dev->dev,
 8330			"error creating admin queues\n");
 8331		return rc;
 8332	}
 8333
 8334	rc = pqi_report_device_capability(ctrl_info);
 8335	if (rc) {
 8336		dev_err(&ctrl_info->pci_dev->dev,
 8337			"obtaining device capability failed\n");
 8338		return rc;
 8339	}
 8340
 8341	rc = pqi_validate_device_capability(ctrl_info);
 8342	if (rc)
 8343		return rc;
 8344
 8345	pqi_calculate_queue_resources(ctrl_info);
 8346
 8347	rc = pqi_enable_msix_interrupts(ctrl_info);
 8348	if (rc)
 8349		return rc;
 8350
 8351	if (ctrl_info->num_msix_vectors_enabled < ctrl_info->num_queue_groups) {
 8352		ctrl_info->max_msix_vectors =
 8353			ctrl_info->num_msix_vectors_enabled;
 8354		pqi_calculate_queue_resources(ctrl_info);
 8355	}
 8356
 8357	rc = pqi_alloc_io_resources(ctrl_info);
 8358	if (rc)
 8359		return rc;
 8360
 8361	rc = pqi_alloc_operational_queues(ctrl_info);
 8362	if (rc) {
 8363		dev_err(&ctrl_info->pci_dev->dev,
 8364			"failed to allocate operational queues\n");
 8365		return rc;
 8366	}
 8367
 8368	pqi_init_operational_queues(ctrl_info);
 8369
 8370	rc = pqi_create_queues(ctrl_info);
 8371	if (rc)
 8372		return rc;
 8373
 8374	rc = pqi_request_irqs(ctrl_info);
 8375	if (rc)
 8376		return rc;
 8377
 8378	pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
 8379
 8380	ctrl_info->controller_online = true;
 8381
 8382	rc = pqi_process_config_table(ctrl_info);
 8383	if (rc)
 8384		return rc;
 8385
 8386	pqi_start_heartbeat_timer(ctrl_info);
 8387
 8388	if (ctrl_info->enable_r5_writes || ctrl_info->enable_r6_writes) {
 8389		rc = pqi_get_advanced_raid_bypass_config(ctrl_info);
 8390		if (rc) { /* Supported features not returned correctly. */
 8391			dev_err(&ctrl_info->pci_dev->dev,
 8392				"error obtaining advanced RAID bypass configuration\n");
 8393			return rc;
 8394		}
 8395		ctrl_info->ciss_report_log_flags |=
 8396			CISS_REPORT_LOG_FLAG_DRIVE_TYPE_MIX;
 8397	}
 8398
 8399	rc = pqi_enable_events(ctrl_info);
 8400	if (rc) {
 8401		dev_err(&ctrl_info->pci_dev->dev,
 8402			"error enabling events\n");
 8403		return rc;
 8404	}
 8405
 8406	/* Register with the SCSI subsystem. */
 8407	rc = pqi_register_scsi(ctrl_info);
 8408	if (rc)
 8409		return rc;
 8410
 8411	rc = pqi_get_ctrl_product_details(ctrl_info);
 8412	if (rc) {
 8413		dev_err(&ctrl_info->pci_dev->dev,
 8414			"error obtaining product details\n");
 8415		return rc;
 8416	}
 8417
 8418	rc = pqi_get_ctrl_serial_number(ctrl_info);
 8419	if (rc) {
 8420		dev_err(&ctrl_info->pci_dev->dev,
 8421			"error obtaining ctrl serial number\n");
 8422		return rc;
 8423	}
 8424
 8425	rc = pqi_set_diag_rescan(ctrl_info);
 8426	if (rc) {
 8427		dev_err(&ctrl_info->pci_dev->dev,
 8428			"error enabling multi-lun rescan\n");
 8429		return rc;
 8430	}
 8431
 8432	rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
 8433	if (rc) {
 8434		dev_err(&ctrl_info->pci_dev->dev,
 8435			"error updating host wellness\n");
 8436		return rc;
 8437	}
 8438
 8439	pqi_schedule_update_time_worker(ctrl_info);
 8440
 8441	pqi_scan_scsi_devices(ctrl_info);
 8442
 8443	return 0;
 8444}
 8445
 8446static void pqi_reinit_queues(struct pqi_ctrl_info *ctrl_info)
 8447{
 8448	unsigned int i;
 8449	struct pqi_admin_queues *admin_queues;
 8450	struct pqi_event_queue *event_queue;
 8451
 8452	admin_queues = &ctrl_info->admin_queues;
 8453	admin_queues->iq_pi_copy = 0;
 8454	admin_queues->oq_ci_copy = 0;
 8455	writel(0, admin_queues->oq_pi);
 8456
 8457	for (i = 0; i < ctrl_info->num_queue_groups; i++) {
 8458		ctrl_info->queue_groups[i].iq_pi_copy[RAID_PATH] = 0;
 8459		ctrl_info->queue_groups[i].iq_pi_copy[AIO_PATH] = 0;
 8460		ctrl_info->queue_groups[i].oq_ci_copy = 0;
 8461
 8462		writel(0, ctrl_info->queue_groups[i].iq_ci[RAID_PATH]);
 8463		writel(0, ctrl_info->queue_groups[i].iq_ci[AIO_PATH]);
 8464		writel(0, ctrl_info->queue_groups[i].oq_pi);
 8465	}
 8466
 8467	event_queue = &ctrl_info->event_queue;
 8468	writel(0, event_queue->oq_pi);
 8469	event_queue->oq_ci_copy = 0;
 8470}
 8471
 8472static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info)
 8473{
 8474	int rc;
 8475
 8476	rc = pqi_force_sis_mode(ctrl_info);
 8477	if (rc)
 8478		return rc;
 8479
 8480	/*
 8481	 * Wait until the controller is ready to start accepting SIS
 8482	 * commands.
 8483	 */
 8484	rc = sis_wait_for_ctrl_ready_resume(ctrl_info);
 8485	if (rc)
 8486		return rc;
 8487
 8488	/*
 8489	 * Get the controller properties.  This allows us to determine
 8490	 * whether or not it supports PQI mode.
 8491	 */
 8492	rc = sis_get_ctrl_properties(ctrl_info);
 8493	if (rc) {
 8494		dev_err(&ctrl_info->pci_dev->dev,
 8495			"error obtaining controller properties\n");
 8496		return rc;
 8497	}
 8498
 8499	rc = sis_get_pqi_capabilities(ctrl_info);
 8500	if (rc) {
 8501		dev_err(&ctrl_info->pci_dev->dev,
 8502			"error obtaining controller capabilities\n");
 8503		return rc;
 8504	}
 8505
 8506	/*
 8507	 * If the function we are about to call succeeds, the
 8508	 * controller will transition from legacy SIS mode
 8509	 * into PQI mode.
 8510	 */
 8511	rc = sis_init_base_struct_addr(ctrl_info);
 8512	if (rc) {
 8513		dev_err(&ctrl_info->pci_dev->dev,
 8514			"error initializing PQI mode\n");
 8515		return rc;
 8516	}
 8517
 8518	/* Wait for the controller to complete the SIS -> PQI transition. */
 8519	rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
 8520	if (rc) {
 8521		dev_err(&ctrl_info->pci_dev->dev,
 8522			"transition to PQI mode failed\n");
 8523		return rc;
 8524	}
 8525
 8526	/* From here on, we are running in PQI mode. */
 8527	ctrl_info->pqi_mode_enabled = true;
 8528	pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
 8529
 8530	pqi_reinit_queues(ctrl_info);
 8531
 8532	rc = pqi_create_admin_queues(ctrl_info);
 8533	if (rc) {
 8534		dev_err(&ctrl_info->pci_dev->dev,
 8535			"error creating admin queues\n");
 8536		return rc;
 8537	}
 8538
 8539	rc = pqi_create_queues(ctrl_info);
 8540	if (rc)
 8541		return rc;
 8542
 8543	pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
 8544
 8545	ctrl_info->controller_online = true;
 8546	pqi_ctrl_unblock_requests(ctrl_info);
 8547
 8548	pqi_ctrl_reset_config(ctrl_info);
 8549
 8550	rc = pqi_process_config_table(ctrl_info);
 8551	if (rc)
 8552		return rc;
 8553
 8554	pqi_start_heartbeat_timer(ctrl_info);
 8555
 8556	if (ctrl_info->enable_r5_writes || ctrl_info->enable_r6_writes) {
 8557		rc = pqi_get_advanced_raid_bypass_config(ctrl_info);
 8558		if (rc) {
 8559			dev_err(&ctrl_info->pci_dev->dev,
 8560				"error obtaining advanced RAID bypass configuration\n");
 8561			return rc;
 8562		}
 8563		ctrl_info->ciss_report_log_flags |=
 8564			CISS_REPORT_LOG_FLAG_DRIVE_TYPE_MIX;
 8565	}
 8566
 8567	rc = pqi_enable_events(ctrl_info);
 8568	if (rc) {
 8569		dev_err(&ctrl_info->pci_dev->dev,
 8570			"error enabling events\n");
 8571		return rc;
 8572	}
 8573
 8574	rc = pqi_get_ctrl_product_details(ctrl_info);
 8575	if (rc) {
 8576		dev_err(&ctrl_info->pci_dev->dev,
 8577			"error obtaining product details\n");
 8578		return rc;
 8579	}
 8580
 8581	rc = pqi_set_diag_rescan(ctrl_info);
 8582	if (rc) {
 8583		dev_err(&ctrl_info->pci_dev->dev,
 8584			"error enabling multi-lun rescan\n");
 8585		return rc;
 8586	}
 8587
 8588	rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
 8589	if (rc) {
 8590		dev_err(&ctrl_info->pci_dev->dev,
 8591			"error updating host wellness\n");
 8592		return rc;
 8593	}
 8594
 8595	if (pqi_ofa_in_progress(ctrl_info))
 8596		pqi_ctrl_unblock_scan(ctrl_info);
 8597
 8598	pqi_scan_scsi_devices(ctrl_info);
 8599
 8600	return 0;
 8601}
 8602
 8603static inline int pqi_set_pcie_completion_timeout(struct pci_dev *pci_dev, u16 timeout)
 8604{
 8605	int rc;
 8606
 8607	rc = pcie_capability_clear_and_set_word(pci_dev, PCI_EXP_DEVCTL2,
 8608		PCI_EXP_DEVCTL2_COMP_TIMEOUT, timeout);
 8609
 8610	return pcibios_err_to_errno(rc);
 8611}
 8612
 8613static int pqi_pci_init(struct pqi_ctrl_info *ctrl_info)
 8614{
 8615	int rc;
 8616	u64 mask;
 8617
 8618	rc = pci_enable_device(ctrl_info->pci_dev);
 8619	if (rc) {
 8620		dev_err(&ctrl_info->pci_dev->dev,
 8621			"failed to enable PCI device\n");
 8622		return rc;
 8623	}
 8624
 8625	if (sizeof(dma_addr_t) > 4)
 8626		mask = DMA_BIT_MASK(64);
 8627	else
 8628		mask = DMA_BIT_MASK(32);
 8629
 8630	rc = dma_set_mask_and_coherent(&ctrl_info->pci_dev->dev, mask);
 8631	if (rc) {
 8632		dev_err(&ctrl_info->pci_dev->dev, "failed to set DMA mask\n");
 8633		goto disable_device;
 8634	}
 8635
 8636	rc = pci_request_regions(ctrl_info->pci_dev, DRIVER_NAME_SHORT);
 8637	if (rc) {
 8638		dev_err(&ctrl_info->pci_dev->dev,
 8639			"failed to obtain PCI resources\n");
 8640		goto disable_device;
 8641	}
 8642
 8643	ctrl_info->iomem_base = ioremap(pci_resource_start(
 8644		ctrl_info->pci_dev, 0),
 8645		pci_resource_len(ctrl_info->pci_dev, 0));
 8646	if (!ctrl_info->iomem_base) {
 8647		dev_err(&ctrl_info->pci_dev->dev,
 8648			"failed to map memory for controller registers\n");
 8649		rc = -ENOMEM;
 8650		goto release_regions;
 8651	}
 8652
 8653#define PCI_EXP_COMP_TIMEOUT_65_TO_210_MS		0x6
 8654
 8655	/* Increase the PCIe completion timeout. */
 8656	rc = pqi_set_pcie_completion_timeout(ctrl_info->pci_dev,
 8657		PCI_EXP_COMP_TIMEOUT_65_TO_210_MS);
 8658	if (rc) {
 8659		dev_err(&ctrl_info->pci_dev->dev,
 8660			"failed to set PCIe completion timeout\n");
 8661		goto release_regions;
 8662	}
 8663
 8664	/* Enable bus mastering. */
 8665	pci_set_master(ctrl_info->pci_dev);
 8666
 8667	ctrl_info->registers = ctrl_info->iomem_base;
 8668	ctrl_info->pqi_registers = &ctrl_info->registers->pqi_registers;
 8669
 8670	pci_set_drvdata(ctrl_info->pci_dev, ctrl_info);
 8671
 8672	return 0;
 8673
 8674release_regions:
 8675	pci_release_regions(ctrl_info->pci_dev);
 8676disable_device:
 8677	pci_disable_device(ctrl_info->pci_dev);
 8678
 8679	return rc;
 8680}
 8681
 8682static void pqi_cleanup_pci_init(struct pqi_ctrl_info *ctrl_info)
 8683{
 8684	iounmap(ctrl_info->iomem_base);
 8685	pci_release_regions(ctrl_info->pci_dev);
 8686	if (pci_is_enabled(ctrl_info->pci_dev))
 8687		pci_disable_device(ctrl_info->pci_dev);
 8688	pci_set_drvdata(ctrl_info->pci_dev, NULL);
 8689}
 8690
 8691static struct pqi_ctrl_info *pqi_alloc_ctrl_info(int numa_node)
 8692{
 8693	struct pqi_ctrl_info *ctrl_info;
 8694
 8695	ctrl_info = kzalloc_node(sizeof(struct pqi_ctrl_info),
 8696			GFP_KERNEL, numa_node);
 8697	if (!ctrl_info)
 8698		return NULL;
 8699
 8700	mutex_init(&ctrl_info->scan_mutex);
 8701	mutex_init(&ctrl_info->lun_reset_mutex);
 8702	mutex_init(&ctrl_info->ofa_mutex);
 8703
 8704	INIT_LIST_HEAD(&ctrl_info->scsi_device_list);
 8705	spin_lock_init(&ctrl_info->scsi_device_list_lock);
 8706
 8707	INIT_WORK(&ctrl_info->event_work, pqi_event_worker);
 8708	atomic_set(&ctrl_info->num_interrupts, 0);
 8709
 8710	INIT_DELAYED_WORK(&ctrl_info->rescan_work, pqi_rescan_worker);
 8711	INIT_DELAYED_WORK(&ctrl_info->update_time_work, pqi_update_time_worker);
 8712
 8713	timer_setup(&ctrl_info->heartbeat_timer, pqi_heartbeat_timer_handler, 0);
 8714	INIT_WORK(&ctrl_info->ctrl_offline_work, pqi_ctrl_offline_worker);
 8715
 8716	INIT_WORK(&ctrl_info->ofa_memory_alloc_work, pqi_ofa_memory_alloc_worker);
 8717	INIT_WORK(&ctrl_info->ofa_quiesce_work, pqi_ofa_quiesce_worker);
 8718
 8719	sema_init(&ctrl_info->sync_request_sem,
 8720		PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS);
 8721	init_waitqueue_head(&ctrl_info->block_requests_wait);
 8722
 8723	ctrl_info->ctrl_id = atomic_inc_return(&pqi_controller_count) - 1;
 8724	ctrl_info->irq_mode = IRQ_MODE_NONE;
 8725	ctrl_info->max_msix_vectors = PQI_MAX_MSIX_VECTORS;
 8726
 8727	ctrl_info->ciss_report_log_flags = CISS_REPORT_LOG_FLAG_UNIQUE_LUN_ID;
 8728	ctrl_info->max_transfer_encrypted_sas_sata =
 8729		PQI_DEFAULT_MAX_TRANSFER_ENCRYPTED_SAS_SATA;
 8730	ctrl_info->max_transfer_encrypted_nvme =
 8731		PQI_DEFAULT_MAX_TRANSFER_ENCRYPTED_NVME;
 8732	ctrl_info->max_write_raid_5_6 = PQI_DEFAULT_MAX_WRITE_RAID_5_6;
 8733	ctrl_info->max_write_raid_1_10_2drive = ~0;
 8734	ctrl_info->max_write_raid_1_10_3drive = ~0;
 8735	ctrl_info->disable_managed_interrupts = pqi_disable_managed_interrupts;
 8736
 8737	return ctrl_info;
 8738}
 8739
 8740static inline void pqi_free_ctrl_info(struct pqi_ctrl_info *ctrl_info)
 8741{
 8742	kfree(ctrl_info);
 8743}
 8744
 8745static void pqi_free_interrupts(struct pqi_ctrl_info *ctrl_info)
 8746{
 8747	pqi_free_irqs(ctrl_info);
 8748	pqi_disable_msix_interrupts(ctrl_info);
 8749}
 8750
 8751static void pqi_free_ctrl_resources(struct pqi_ctrl_info *ctrl_info)
 8752{
 8753	pqi_free_interrupts(ctrl_info);
 8754	if (ctrl_info->queue_memory_base)
 8755		dma_free_coherent(&ctrl_info->pci_dev->dev,
 8756			ctrl_info->queue_memory_length,
 8757			ctrl_info->queue_memory_base,
 8758			ctrl_info->queue_memory_base_dma_handle);
 8759	if (ctrl_info->admin_queue_memory_base)
 8760		dma_free_coherent(&ctrl_info->pci_dev->dev,
 8761			ctrl_info->admin_queue_memory_length,
 8762			ctrl_info->admin_queue_memory_base,
 8763			ctrl_info->admin_queue_memory_base_dma_handle);
 8764	pqi_free_all_io_requests(ctrl_info);
 8765	if (ctrl_info->error_buffer)
 8766		dma_free_coherent(&ctrl_info->pci_dev->dev,
 8767			ctrl_info->error_buffer_length,
 8768			ctrl_info->error_buffer,
 8769			ctrl_info->error_buffer_dma_handle);
 8770	if (ctrl_info->iomem_base)
 8771		pqi_cleanup_pci_init(ctrl_info);
 8772	pqi_free_ctrl_info(ctrl_info);
 8773}
 8774
 8775static void pqi_remove_ctrl(struct pqi_ctrl_info *ctrl_info)
 8776{
 8777	ctrl_info->controller_online = false;
 8778	pqi_stop_heartbeat_timer(ctrl_info);
 8779	pqi_ctrl_block_requests(ctrl_info);
 8780	pqi_cancel_rescan_worker(ctrl_info);
 8781	pqi_cancel_update_time_worker(ctrl_info);
 8782	if (ctrl_info->ctrl_removal_state == PQI_CTRL_SURPRISE_REMOVAL) {
 8783		pqi_fail_all_outstanding_requests(ctrl_info);
 8784		ctrl_info->pqi_mode_enabled = false;
 8785	}
 8786	pqi_unregister_scsi(ctrl_info);
 8787	if (ctrl_info->pqi_mode_enabled)
 8788		pqi_revert_to_sis_mode(ctrl_info);
 8789	pqi_free_ctrl_resources(ctrl_info);
 8790}
 8791
 8792static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info)
 8793{
 8794	pqi_ctrl_block_scan(ctrl_info);
 8795	pqi_scsi_block_requests(ctrl_info);
 8796	pqi_ctrl_block_device_reset(ctrl_info);
 8797	pqi_ctrl_block_requests(ctrl_info);
 8798	pqi_ctrl_wait_until_quiesced(ctrl_info);
 8799	pqi_stop_heartbeat_timer(ctrl_info);
 8800}
 8801
 8802static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info)
 8803{
 8804	pqi_start_heartbeat_timer(ctrl_info);
 8805	pqi_ctrl_unblock_requests(ctrl_info);
 8806	pqi_ctrl_unblock_device_reset(ctrl_info);
 8807	pqi_scsi_unblock_requests(ctrl_info);
 8808	pqi_ctrl_unblock_scan(ctrl_info);
 8809}
 8810
 8811static int pqi_ofa_alloc_mem(struct pqi_ctrl_info *ctrl_info, u32 total_size, u32 chunk_size)
 8812{
 8813	int i;
 8814	u32 sg_count;
 8815	struct device *dev;
 8816	struct pqi_ofa_memory *ofap;
 8817	struct pqi_sg_descriptor *mem_descriptor;
 8818	dma_addr_t dma_handle;
 8819
 8820	ofap = ctrl_info->pqi_ofa_mem_virt_addr;
 8821
 8822	sg_count = DIV_ROUND_UP(total_size, chunk_size);
 8823	if (sg_count == 0 || sg_count > PQI_OFA_MAX_SG_DESCRIPTORS)
 8824		goto out;
 8825
 8826	ctrl_info->pqi_ofa_chunk_virt_addr = kmalloc_array(sg_count, sizeof(void *), GFP_KERNEL);
 8827	if (!ctrl_info->pqi_ofa_chunk_virt_addr)
 8828		goto out;
 8829
 8830	dev = &ctrl_info->pci_dev->dev;
 8831
 8832	for (i = 0; i < sg_count; i++) {
 8833		ctrl_info->pqi_ofa_chunk_virt_addr[i] =
 8834			dma_alloc_coherent(dev, chunk_size, &dma_handle, GFP_KERNEL);
 8835		if (!ctrl_info->pqi_ofa_chunk_virt_addr[i])
 8836			goto out_free_chunks;
 8837		mem_descriptor = &ofap->sg_descriptor[i];
 8838		put_unaligned_le64((u64)dma_handle, &mem_descriptor->address);
 8839		put_unaligned_le32(chunk_size, &mem_descriptor->length);
 8840	}
 8841
 8842	put_unaligned_le32(CISS_SG_LAST, &mem_descriptor->flags);
 8843	put_unaligned_le16(sg_count, &ofap->num_memory_descriptors);
 8844	put_unaligned_le32(sg_count * chunk_size, &ofap->bytes_allocated);
 8845
 8846	return 0;
 8847
 8848out_free_chunks:
 8849	while (--i >= 0) {
 8850		mem_descriptor = &ofap->sg_descriptor[i];
 8851		dma_free_coherent(dev, chunk_size,
 8852			ctrl_info->pqi_ofa_chunk_virt_addr[i],
 8853			get_unaligned_le64(&mem_descriptor->address));
 8854	}
 8855	kfree(ctrl_info->pqi_ofa_chunk_virt_addr);
 8856
 8857out:
 8858	return -ENOMEM;
 8859}
 8860
 8861static int pqi_ofa_alloc_host_buffer(struct pqi_ctrl_info *ctrl_info)
 8862{
 8863	u32 total_size;
 8864	u32 chunk_size;
 8865	u32 min_chunk_size;
 8866
 8867	if (ctrl_info->ofa_bytes_requested == 0)
 8868		return 0;
 8869
 8870	total_size = PAGE_ALIGN(ctrl_info->ofa_bytes_requested);
 8871	min_chunk_size = DIV_ROUND_UP(total_size, PQI_OFA_MAX_SG_DESCRIPTORS);
 8872	min_chunk_size = PAGE_ALIGN(min_chunk_size);
 8873
 8874	for (chunk_size = total_size; chunk_size >= min_chunk_size;) {
 8875		if (pqi_ofa_alloc_mem(ctrl_info, total_size, chunk_size) == 0)
 8876			return 0;
 8877		chunk_size /= 2;
 8878		chunk_size = PAGE_ALIGN(chunk_size);
 8879	}
 8880
 8881	return -ENOMEM;
 8882}
 8883
 8884static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info)
 8885{
 8886	struct device *dev;
 8887	struct pqi_ofa_memory *ofap;
 8888
 8889	dev = &ctrl_info->pci_dev->dev;
 8890
 8891	ofap = dma_alloc_coherent(dev, sizeof(*ofap),
 8892		&ctrl_info->pqi_ofa_mem_dma_handle, GFP_KERNEL);
 8893	if (!ofap)
 8894		return;
 8895
 8896	ctrl_info->pqi_ofa_mem_virt_addr = ofap;
 8897
 8898	if (pqi_ofa_alloc_host_buffer(ctrl_info) < 0) {
 8899		dev_err(dev,
 8900			"failed to allocate host buffer for Online Firmware Activation\n");
 8901		dma_free_coherent(dev, sizeof(*ofap), ofap, ctrl_info->pqi_ofa_mem_dma_handle);
 8902		ctrl_info->pqi_ofa_mem_virt_addr = NULL;
 8903		return;
 8904	}
 8905
 8906	put_unaligned_le16(PQI_OFA_VERSION, &ofap->version);
 8907	memcpy(&ofap->signature, PQI_OFA_SIGNATURE, sizeof(ofap->signature));
 8908}
 8909
 8910static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info)
 8911{
 8912	unsigned int i;
 8913	struct device *dev;
 8914	struct pqi_ofa_memory *ofap;
 8915	struct pqi_sg_descriptor *mem_descriptor;
 8916	unsigned int num_memory_descriptors;
 8917
 8918	ofap = ctrl_info->pqi_ofa_mem_virt_addr;
 8919	if (!ofap)
 8920		return;
 8921
 8922	dev = &ctrl_info->pci_dev->dev;
 8923
 8924	if (get_unaligned_le32(&ofap->bytes_allocated) == 0)
 8925		goto out;
 8926
 8927	mem_descriptor = ofap->sg_descriptor;
 8928	num_memory_descriptors =
 8929		get_unaligned_le16(&ofap->num_memory_descriptors);
 8930
 8931	for (i = 0; i < num_memory_descriptors; i++) {
 8932		dma_free_coherent(dev,
 8933			get_unaligned_le32(&mem_descriptor[i].length),
 8934			ctrl_info->pqi_ofa_chunk_virt_addr[i],
 8935			get_unaligned_le64(&mem_descriptor[i].address));
 8936	}
 8937	kfree(ctrl_info->pqi_ofa_chunk_virt_addr);
 8938
 8939out:
 8940	dma_free_coherent(dev, sizeof(*ofap), ofap,
 8941		ctrl_info->pqi_ofa_mem_dma_handle);
 8942	ctrl_info->pqi_ofa_mem_virt_addr = NULL;
 8943}
 8944
 8945static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info)
 8946{
 8947	u32 buffer_length;
 8948	struct pqi_vendor_general_request request;
 8949	struct pqi_ofa_memory *ofap;
 8950
 8951	memset(&request, 0, sizeof(request));
 8952
 8953	request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL;
 8954	put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
 8955		&request.header.iu_length);
 8956	put_unaligned_le16(PQI_VENDOR_GENERAL_HOST_MEMORY_UPDATE,
 8957		&request.function_code);
 8958
 8959	ofap = ctrl_info->pqi_ofa_mem_virt_addr;
 8960
 8961	if (ofap) {
 8962		buffer_length = offsetof(struct pqi_ofa_memory, sg_descriptor) +
 8963			get_unaligned_le16(&ofap->num_memory_descriptors) *
 8964			sizeof(struct pqi_sg_descriptor);
 8965
 8966		put_unaligned_le64((u64)ctrl_info->pqi_ofa_mem_dma_handle,
 8967			&request.data.ofa_memory_allocation.buffer_address);
 8968		put_unaligned_le32(buffer_length,
 8969			&request.data.ofa_memory_allocation.buffer_length);
 8970	}
 8971
 8972	return pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, NULL);
 8973}
 8974
 8975static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info, unsigned int delay_secs)
 8976{
 8977	ssleep(delay_secs);
 8978
 8979	return pqi_ctrl_init_resume(ctrl_info);
 8980}
 8981
 8982static struct pqi_raid_error_info pqi_ctrl_offline_raid_error_info = {
 8983	.data_out_result = PQI_DATA_IN_OUT_HARDWARE_ERROR,
 8984	.status = SAM_STAT_CHECK_CONDITION,
 8985};
 8986
 8987static void pqi_fail_all_outstanding_requests(struct pqi_ctrl_info *ctrl_info)
 8988{
 8989	unsigned int i;
 8990	struct pqi_io_request *io_request;
 8991	struct scsi_cmnd *scmd;
 8992	struct scsi_device *sdev;
 8993
 8994	for (i = 0; i < ctrl_info->max_io_slots; i++) {
 8995		io_request = &ctrl_info->io_request_pool[i];
 8996		if (atomic_read(&io_request->refcount) == 0)
 8997			continue;
 8998
 8999		scmd = io_request->scmd;
 9000		if (scmd) {
 9001			sdev = scmd->device;
 9002			if (!sdev || !scsi_device_online(sdev)) {
 9003				pqi_free_io_request(io_request);
 9004				continue;
 9005			} else {
 9006				set_host_byte(scmd, DID_NO_CONNECT);
 9007			}
 9008		} else {
 9009			io_request->status = -ENXIO;
 9010			io_request->error_info =
 9011				&pqi_ctrl_offline_raid_error_info;
 9012		}
 9013
 9014		io_request->io_complete_callback(io_request,
 9015			io_request->context);
 9016	}
 9017}
 9018
 9019static void pqi_take_ctrl_offline_deferred(struct pqi_ctrl_info *ctrl_info)
 9020{
 9021	pqi_perform_lockup_action();
 9022	pqi_stop_heartbeat_timer(ctrl_info);
 9023	pqi_free_interrupts(ctrl_info);
 9024	pqi_cancel_rescan_worker(ctrl_info);
 9025	pqi_cancel_update_time_worker(ctrl_info);
 9026	pqi_ctrl_wait_until_quiesced(ctrl_info);
 9027	pqi_fail_all_outstanding_requests(ctrl_info);
 9028	pqi_ctrl_unblock_requests(ctrl_info);
 9029}
 9030
 9031static void pqi_ctrl_offline_worker(struct work_struct *work)
 9032{
 9033	struct pqi_ctrl_info *ctrl_info;
 9034
 9035	ctrl_info = container_of(work, struct pqi_ctrl_info, ctrl_offline_work);
 9036	pqi_take_ctrl_offline_deferred(ctrl_info);
 9037}
 9038
 9039static char *pqi_ctrl_shutdown_reason_to_string(enum pqi_ctrl_shutdown_reason ctrl_shutdown_reason)
 9040{
 9041	char *string;
 9042
 9043	switch (ctrl_shutdown_reason) {
 9044	case PQI_IQ_NOT_DRAINED_TIMEOUT:
 9045		string = "inbound queue not drained timeout";
 9046		break;
 9047	case PQI_LUN_RESET_TIMEOUT:
 9048		string = "LUN reset timeout";
 9049		break;
 9050	case PQI_IO_PENDING_POST_LUN_RESET_TIMEOUT:
 9051		string = "I/O pending timeout after LUN reset";
 9052		break;
 9053	case PQI_NO_HEARTBEAT:
 9054		string = "no controller heartbeat detected";
 9055		break;
 9056	case PQI_FIRMWARE_KERNEL_NOT_UP:
 9057		string = "firmware kernel not ready";
 9058		break;
 9059	case PQI_OFA_RESPONSE_TIMEOUT:
 9060		string = "OFA response timeout";
 9061		break;
 9062	case PQI_INVALID_REQ_ID:
 9063		string = "invalid request ID";
 9064		break;
 9065	case PQI_UNMATCHED_REQ_ID:
 9066		string = "unmatched request ID";
 9067		break;
 9068	case PQI_IO_PI_OUT_OF_RANGE:
 9069		string = "I/O queue producer index out of range";
 9070		break;
 9071	case PQI_EVENT_PI_OUT_OF_RANGE:
 9072		string = "event queue producer index out of range";
 9073		break;
 9074	case PQI_UNEXPECTED_IU_TYPE:
 9075		string = "unexpected IU type";
 9076		break;
 9077	default:
 9078		string = "unknown reason";
 9079		break;
 9080	}
 9081
 9082	return string;
 9083}
 9084
 9085static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info,
 9086	enum pqi_ctrl_shutdown_reason ctrl_shutdown_reason)
 9087{
 9088	if (!ctrl_info->controller_online)
 9089		return;
 9090
 9091	ctrl_info->controller_online = false;
 9092	ctrl_info->pqi_mode_enabled = false;
 9093	pqi_ctrl_block_requests(ctrl_info);
 9094	if (!pqi_disable_ctrl_shutdown)
 9095		sis_shutdown_ctrl(ctrl_info, ctrl_shutdown_reason);
 9096	pci_disable_device(ctrl_info->pci_dev);
 9097	dev_err(&ctrl_info->pci_dev->dev,
 9098		"controller offline: reason code 0x%x (%s)\n",
 9099		ctrl_shutdown_reason, pqi_ctrl_shutdown_reason_to_string(ctrl_shutdown_reason));
 9100	schedule_work(&ctrl_info->ctrl_offline_work);
 9101}
 9102
 9103static void pqi_print_ctrl_info(struct pci_dev *pci_dev,
 9104	const struct pci_device_id *id)
 9105{
 9106	char *ctrl_description;
 9107
 9108	if (id->driver_data)
 9109		ctrl_description = (char *)id->driver_data;
 9110	else
 9111		ctrl_description = "Microchip Smart Family Controller";
 9112
 9113	dev_info(&pci_dev->dev, "%s found\n", ctrl_description);
 9114}
 9115
 9116static int pqi_pci_probe(struct pci_dev *pci_dev,
 9117	const struct pci_device_id *id)
 9118{
 9119	int rc;
 9120	int node;
 9121	struct pqi_ctrl_info *ctrl_info;
 9122
 9123	pqi_print_ctrl_info(pci_dev, id);
 9124
 9125	if (pqi_disable_device_id_wildcards &&
 9126		id->subvendor == PCI_ANY_ID &&
 9127		id->subdevice == PCI_ANY_ID) {
 9128		dev_warn(&pci_dev->dev,
 9129			"controller not probed because device ID wildcards are disabled\n");
 9130		return -ENODEV;
 9131	}
 9132
 9133	if (id->subvendor == PCI_ANY_ID || id->subdevice == PCI_ANY_ID)
 9134		dev_warn(&pci_dev->dev,
 9135			"controller device ID matched using wildcards\n");
 9136
 9137	node = dev_to_node(&pci_dev->dev);
 9138	if (node == NUMA_NO_NODE) {
 9139		node = cpu_to_node(0);
 9140		if (node == NUMA_NO_NODE)
 9141			node = 0;
 9142		set_dev_node(&pci_dev->dev, node);
 9143	}
 9144
 9145	ctrl_info = pqi_alloc_ctrl_info(node);
 9146	if (!ctrl_info) {
 9147		dev_err(&pci_dev->dev,
 9148			"failed to allocate controller info block\n");
 9149		return -ENOMEM;
 9150	}
 9151	ctrl_info->numa_node = node;
 9152
 9153	ctrl_info->pci_dev = pci_dev;
 9154
 9155	rc = pqi_pci_init(ctrl_info);
 9156	if (rc)
 9157		goto error;
 9158
 9159	rc = pqi_ctrl_init(ctrl_info);
 9160	if (rc)
 9161		goto error;
 9162
 9163	return 0;
 9164
 9165error:
 9166	pqi_remove_ctrl(ctrl_info);
 9167
 9168	return rc;
 9169}
 9170
 9171static void pqi_pci_remove(struct pci_dev *pci_dev)
 9172{
 9173	struct pqi_ctrl_info *ctrl_info;
 9174	u16 vendor_id;
 9175	int rc;
 9176
 9177	ctrl_info = pci_get_drvdata(pci_dev);
 9178	if (!ctrl_info)
 9179		return;
 9180
 9181	pci_read_config_word(ctrl_info->pci_dev, PCI_SUBSYSTEM_VENDOR_ID, &vendor_id);
 9182	if (vendor_id == 0xffff)
 9183		ctrl_info->ctrl_removal_state = PQI_CTRL_SURPRISE_REMOVAL;
 9184	else
 9185		ctrl_info->ctrl_removal_state = PQI_CTRL_GRACEFUL_REMOVAL;
 9186
 9187	if (ctrl_info->ctrl_removal_state == PQI_CTRL_GRACEFUL_REMOVAL) {
 9188		rc = pqi_flush_cache(ctrl_info, RESTART);
 9189		if (rc)
 9190			dev_err(&pci_dev->dev,
 9191				"unable to flush controller cache during remove\n");
 9192	}
 9193
 9194	pqi_remove_ctrl(ctrl_info);
 9195}
 9196
 9197static void pqi_crash_if_pending_command(struct pqi_ctrl_info *ctrl_info)
 9198{
 9199	unsigned int i;
 9200	struct pqi_io_request *io_request;
 9201	struct scsi_cmnd *scmd;
 9202
 9203	for (i = 0; i < ctrl_info->max_io_slots; i++) {
 9204		io_request = &ctrl_info->io_request_pool[i];
 9205		if (atomic_read(&io_request->refcount) == 0)
 9206			continue;
 9207		scmd = io_request->scmd;
 9208		WARN_ON(scmd != NULL); /* IO command from SML */
 9209		WARN_ON(scmd == NULL); /* Non-IO cmd or driver initiated*/
 9210	}
 9211}
 9212
 9213static void pqi_shutdown(struct pci_dev *pci_dev)
 9214{
 9215	int rc;
 9216	struct pqi_ctrl_info *ctrl_info;
 9217	enum bmic_flush_cache_shutdown_event shutdown_event;
 9218
 9219	ctrl_info = pci_get_drvdata(pci_dev);
 9220	if (!ctrl_info) {
 9221		dev_err(&pci_dev->dev,
 9222			"cache could not be flushed\n");
 9223		return;
 9224	}
 9225
 9226	pqi_wait_until_ofa_finished(ctrl_info);
 9227
 9228	pqi_scsi_block_requests(ctrl_info);
 9229	pqi_ctrl_block_device_reset(ctrl_info);
 9230	pqi_ctrl_block_requests(ctrl_info);
 9231	pqi_ctrl_wait_until_quiesced(ctrl_info);
 9232
 9233	if (system_state == SYSTEM_RESTART)
 9234		shutdown_event = RESTART;
 9235	else
 9236		shutdown_event = SHUTDOWN;
 9237
 9238	/*
 9239	 * Write all data in the controller's battery-backed cache to
 9240	 * storage.
 9241	 */
 9242	rc = pqi_flush_cache(ctrl_info, shutdown_event);
 9243	if (rc)
 9244		dev_err(&pci_dev->dev,
 9245			"unable to flush controller cache during shutdown\n");
 9246
 9247	pqi_crash_if_pending_command(ctrl_info);
 9248	pqi_reset(ctrl_info);
 9249}
 9250
 9251static void pqi_process_lockup_action_param(void)
 9252{
 9253	unsigned int i;
 9254
 9255	if (!pqi_lockup_action_param)
 9256		return;
 9257
 9258	for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
 9259		if (strcmp(pqi_lockup_action_param,
 9260			pqi_lockup_actions[i].name) == 0) {
 9261			pqi_lockup_action = pqi_lockup_actions[i].action;
 9262			return;
 9263		}
 9264	}
 9265
 9266	pr_warn("%s: invalid lockup action setting \"%s\" - supported settings: none, reboot, panic\n",
 9267		DRIVER_NAME_SHORT, pqi_lockup_action_param);
 9268}
 9269
 9270#define PQI_CTRL_READY_TIMEOUT_PARAM_MIN_SECS		30
 9271#define PQI_CTRL_READY_TIMEOUT_PARAM_MAX_SECS		(30 * 60)
 9272
 9273static void pqi_process_ctrl_ready_timeout_param(void)
 9274{
 9275	if (pqi_ctrl_ready_timeout_secs == 0)
 9276		return;
 9277
 9278	if (pqi_ctrl_ready_timeout_secs < PQI_CTRL_READY_TIMEOUT_PARAM_MIN_SECS) {
 9279		pr_warn("%s: ctrl_ready_timeout parm of %u second(s) is less than minimum timeout of %d seconds - setting timeout to %d seconds\n",
 9280			DRIVER_NAME_SHORT, pqi_ctrl_ready_timeout_secs, PQI_CTRL_READY_TIMEOUT_PARAM_MIN_SECS, PQI_CTRL_READY_TIMEOUT_PARAM_MIN_SECS);
 9281		pqi_ctrl_ready_timeout_secs = PQI_CTRL_READY_TIMEOUT_PARAM_MIN_SECS;
 9282	} else if (pqi_ctrl_ready_timeout_secs > PQI_CTRL_READY_TIMEOUT_PARAM_MAX_SECS) {
 9283		pr_warn("%s: ctrl_ready_timeout parm of %u seconds is greater than maximum timeout of %d seconds - setting timeout to %d seconds\n",
 9284			DRIVER_NAME_SHORT, pqi_ctrl_ready_timeout_secs, PQI_CTRL_READY_TIMEOUT_PARAM_MAX_SECS, PQI_CTRL_READY_TIMEOUT_PARAM_MAX_SECS);
 9285		pqi_ctrl_ready_timeout_secs = PQI_CTRL_READY_TIMEOUT_PARAM_MAX_SECS;
 9286	}
 9287
 9288	sis_ctrl_ready_timeout_secs = pqi_ctrl_ready_timeout_secs;
 9289}
 9290
 9291static void pqi_process_module_params(void)
 9292{
 9293	pqi_process_lockup_action_param();
 9294	pqi_process_ctrl_ready_timeout_param();
 9295}
 9296
 9297#if defined(CONFIG_PM)
 9298
 9299static inline enum bmic_flush_cache_shutdown_event pqi_get_flush_cache_shutdown_event(struct pci_dev *pci_dev)
 9300{
 9301	if (pci_dev->subsystem_vendor == PCI_VENDOR_ID_ADAPTEC2 && pci_dev->subsystem_device == 0x1304)
 9302		return RESTART;
 9303
 9304	return SUSPEND;
 9305}
 9306
 9307static int pqi_suspend_or_freeze(struct device *dev, bool suspend)
 9308{
 9309	struct pci_dev *pci_dev;
 9310	struct pqi_ctrl_info *ctrl_info;
 9311
 9312	pci_dev = to_pci_dev(dev);
 9313	ctrl_info = pci_get_drvdata(pci_dev);
 9314
 9315	pqi_wait_until_ofa_finished(ctrl_info);
 9316
 9317	pqi_ctrl_block_scan(ctrl_info);
 9318	pqi_scsi_block_requests(ctrl_info);
 9319	pqi_ctrl_block_device_reset(ctrl_info);
 9320	pqi_ctrl_block_requests(ctrl_info);
 9321	pqi_ctrl_wait_until_quiesced(ctrl_info);
 9322
 9323	if (suspend) {
 9324		enum bmic_flush_cache_shutdown_event shutdown_event;
 9325
 9326		shutdown_event = pqi_get_flush_cache_shutdown_event(pci_dev);
 9327		pqi_flush_cache(ctrl_info, shutdown_event);
 9328	}
 9329
 9330	pqi_stop_heartbeat_timer(ctrl_info);
 9331	pqi_crash_if_pending_command(ctrl_info);
 9332	pqi_free_irqs(ctrl_info);
 9333
 9334	ctrl_info->controller_online = false;
 9335	ctrl_info->pqi_mode_enabled = false;
 9336
 9337	return 0;
 9338}
 9339
 9340static __maybe_unused int pqi_suspend(struct device *dev)
 9341{
 9342	return pqi_suspend_or_freeze(dev, true);
 9343}
 9344
 9345static int pqi_resume_or_restore(struct device *dev)
 9346{
 9347	int rc;
 9348	struct pci_dev *pci_dev;
 9349	struct pqi_ctrl_info *ctrl_info;
 9350
 9351	pci_dev = to_pci_dev(dev);
 9352	ctrl_info = pci_get_drvdata(pci_dev);
 9353
 9354	rc = pqi_request_irqs(ctrl_info);
 9355	if (rc)
 9356		return rc;
 9357
 9358	pqi_ctrl_unblock_device_reset(ctrl_info);
 9359	pqi_ctrl_unblock_requests(ctrl_info);
 9360	pqi_scsi_unblock_requests(ctrl_info);
 9361	pqi_ctrl_unblock_scan(ctrl_info);
 9362
 9363	ssleep(PQI_POST_RESET_DELAY_SECS);
 9364
 9365	return pqi_ctrl_init_resume(ctrl_info);
 9366}
 9367
 9368static int pqi_freeze(struct device *dev)
 9369{
 9370	return pqi_suspend_or_freeze(dev, false);
 9371}
 9372
 9373static int pqi_thaw(struct device *dev)
 9374{
 9375	int rc;
 9376	struct pci_dev *pci_dev;
 9377	struct pqi_ctrl_info *ctrl_info;
 9378
 9379	pci_dev = to_pci_dev(dev);
 9380	ctrl_info = pci_get_drvdata(pci_dev);
 9381
 9382	rc = pqi_request_irqs(ctrl_info);
 9383	if (rc)
 9384		return rc;
 9385
 9386	ctrl_info->controller_online = true;
 9387	ctrl_info->pqi_mode_enabled = true;
 9388
 9389	pqi_ctrl_unblock_device_reset(ctrl_info);
 9390	pqi_ctrl_unblock_requests(ctrl_info);
 9391	pqi_scsi_unblock_requests(ctrl_info);
 9392	pqi_ctrl_unblock_scan(ctrl_info);
 9393
 9394	return 0;
 9395}
 9396
 9397static int pqi_poweroff(struct device *dev)
 9398{
 9399	struct pci_dev *pci_dev;
 9400	struct pqi_ctrl_info *ctrl_info;
 9401	enum bmic_flush_cache_shutdown_event shutdown_event;
 9402
 9403	pci_dev = to_pci_dev(dev);
 9404	ctrl_info = pci_get_drvdata(pci_dev);
 9405
 9406	shutdown_event = pqi_get_flush_cache_shutdown_event(pci_dev);
 9407	pqi_flush_cache(ctrl_info, shutdown_event);
 9408
 9409	return 0;
 9410}
 9411
 9412static const struct dev_pm_ops pqi_pm_ops = {
 9413	.suspend = pqi_suspend,
 9414	.resume = pqi_resume_or_restore,
 9415	.freeze = pqi_freeze,
 9416	.thaw = pqi_thaw,
 9417	.poweroff = pqi_poweroff,
 9418	.restore = pqi_resume_or_restore,
 9419};
 9420
 9421#endif /* CONFIG_PM */
 9422
 9423/* Define the PCI IDs for the controllers that we support. */
 9424static const struct pci_device_id pqi_pci_id_table[] = {
 9425	{
 9426		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9427			       0x105b, 0x1211)
 9428	},
 9429	{
 9430		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9431			       0x105b, 0x1321)
 9432	},
 9433	{
 9434		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9435			       0x152d, 0x8a22)
 9436	},
 9437	{
 9438		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9439			       0x152d, 0x8a23)
 9440	},
 9441	{
 9442		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9443			       0x152d, 0x8a24)
 9444	},
 9445	{
 9446		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9447			       0x152d, 0x8a36)
 9448	},
 9449	{
 9450		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9451			       0x152d, 0x8a37)
 9452	},
 9453	{
 9454		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9455			       0x193d, 0x1104)
 9456	},
 9457	{
 9458		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9459			       0x193d, 0x1105)
 9460	},
 9461	{
 9462		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9463			       0x193d, 0x1106)
 9464	},
 9465	{
 9466		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9467			       0x193d, 0x1107)
 9468	},
 9469	{
 9470		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9471			       0x193d, 0x1108)
 9472	},
 9473	{
 9474		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9475			       0x193d, 0x1109)
 9476	},
 9477	{
 9478		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9479			       0x193d, 0x110b)
 9480	},
 9481	{
 9482		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9483			       0x193d, 0x8460)
 9484	},
 9485	{
 9486		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9487			       0x193d, 0x8461)
 9488	},
 9489	{
 9490		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9491			       0x193d, 0xc460)
 9492	},
 9493	{
 9494		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9495			       0x193d, 0xc461)
 9496	},
 9497	{
 9498		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9499			       0x193d, 0xf460)
 9500	},
 9501	{
 9502		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9503			       0x193d, 0xf461)
 9504	},
 9505	{
 9506		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9507			       0x1bd4, 0x0045)
 9508	},
 9509	{
 9510		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9511			       0x1bd4, 0x0046)
 9512	},
 9513	{
 9514		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9515			       0x1bd4, 0x0047)
 9516	},
 9517	{
 9518		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9519			       0x1bd4, 0x0048)
 9520	},
 9521	{
 9522		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9523			       0x1bd4, 0x004a)
 9524	},
 9525	{
 9526		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9527			       0x1bd4, 0x004b)
 9528	},
 9529	{
 9530		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9531			       0x1bd4, 0x004c)
 9532	},
 9533	{
 9534		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9535			       0x1bd4, 0x004f)
 9536	},
 9537	{
 9538		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9539			       0x1bd4, 0x0051)
 9540	},
 9541	{
 9542		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9543			       0x1bd4, 0x0052)
 9544	},
 9545	{
 9546		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9547			       0x1bd4, 0x0053)
 9548	},
 9549	{
 9550		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9551			       0x1bd4, 0x0054)
 9552	},
 9553	{
 9554		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9555			       0x1bd4, 0x006b)
 9556	},
 9557	{
 9558		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9559			       0x1bd4, 0x006c)
 9560	},
 9561	{
 9562		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9563			       0x1bd4, 0x006d)
 9564	},
 9565	{
 9566		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9567			       0x1bd4, 0x006f)
 9568	},
 9569	{
 9570		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9571			       0x1bd4, 0x0070)
 9572	},
 9573	{
 9574		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9575			       0x1bd4, 0x0071)
 9576	},
 9577	{
 9578		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9579			       0x1bd4, 0x0072)
 9580	},
 9581	{
 9582		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9583			       0x1bd4, 0x0086)
 9584	},
 9585	{
 9586		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9587			       0x1bd4, 0x0087)
 9588	},
 9589	{
 9590		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9591			       0x1bd4, 0x0088)
 9592	},
 9593	{
 9594		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9595			       0x1bd4, 0x0089)
 9596	},
 9597	{
 9598		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9599			       0x19e5, 0xd227)
 9600	},
 9601	{
 9602		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9603			       0x19e5, 0xd228)
 9604	},
 9605	{
 9606		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9607			       0x19e5, 0xd229)
 9608	},
 9609	{
 9610		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9611			       0x19e5, 0xd22a)
 9612	},
 9613	{
 9614		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9615			       0x19e5, 0xd22b)
 9616	},
 9617	{
 9618		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9619			       0x19e5, 0xd22c)
 9620	},
 9621	{
 9622		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9623			       PCI_VENDOR_ID_ADAPTEC2, 0x0110)
 9624	},
 9625	{
 9626		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9627			       PCI_VENDOR_ID_ADAPTEC2, 0x0608)
 9628	},
 9629	{
 9630		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9631			       PCI_VENDOR_ID_ADAPTEC2, 0x0659)
 9632	},
 9633	{
 9634		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9635			       PCI_VENDOR_ID_ADAPTEC2, 0x0800)
 9636	},
 9637	{
 9638		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9639			       PCI_VENDOR_ID_ADAPTEC2, 0x0801)
 9640	},
 9641	{
 9642		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9643			       PCI_VENDOR_ID_ADAPTEC2, 0x0802)
 9644	},
 9645	{
 9646		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9647			       PCI_VENDOR_ID_ADAPTEC2, 0x0803)
 9648	},
 9649	{
 9650		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9651			       PCI_VENDOR_ID_ADAPTEC2, 0x0804)
 9652	},
 9653	{
 9654		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9655			       PCI_VENDOR_ID_ADAPTEC2, 0x0805)
 9656	},
 9657	{
 9658		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9659			       PCI_VENDOR_ID_ADAPTEC2, 0x0806)
 9660	},
 9661	{
 9662		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9663			       PCI_VENDOR_ID_ADAPTEC2, 0x0807)
 9664	},
 9665	{
 9666		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9667			       PCI_VENDOR_ID_ADAPTEC2, 0x0808)
 9668	},
 9669	{
 9670		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9671			       PCI_VENDOR_ID_ADAPTEC2, 0x0809)
 9672	},
 9673	{
 9674		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9675			       PCI_VENDOR_ID_ADAPTEC2, 0x080a)
 9676	},
 9677	{
 9678		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9679			       PCI_VENDOR_ID_ADAPTEC2, 0x0900)
 9680	},
 9681	{
 9682		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9683			       PCI_VENDOR_ID_ADAPTEC2, 0x0901)
 9684	},
 9685	{
 9686		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9687			       PCI_VENDOR_ID_ADAPTEC2, 0x0902)
 9688	},
 9689	{
 9690		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9691			       PCI_VENDOR_ID_ADAPTEC2, 0x0903)
 9692	},
 9693	{
 9694		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9695			       PCI_VENDOR_ID_ADAPTEC2, 0x0904)
 9696	},
 9697	{
 9698		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9699			       PCI_VENDOR_ID_ADAPTEC2, 0x0905)
 9700	},
 9701	{
 9702		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9703			       PCI_VENDOR_ID_ADAPTEC2, 0x0906)
 9704	},
 9705	{
 9706		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9707			       PCI_VENDOR_ID_ADAPTEC2, 0x0907)
 9708	},
 9709	{
 9710		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9711			       PCI_VENDOR_ID_ADAPTEC2, 0x0908)
 9712	},
 9713	{
 9714		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9715			       PCI_VENDOR_ID_ADAPTEC2, 0x090a)
 9716	},
 9717	{
 9718		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9719			       PCI_VENDOR_ID_ADAPTEC2, 0x1200)
 9720	},
 9721	{
 9722		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9723			       PCI_VENDOR_ID_ADAPTEC2, 0x1201)
 9724	},
 9725	{
 9726		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9727			       PCI_VENDOR_ID_ADAPTEC2, 0x1202)
 9728	},
 9729	{
 9730		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9731			       PCI_VENDOR_ID_ADAPTEC2, 0x1280)
 9732	},
 9733	{
 9734		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9735			       PCI_VENDOR_ID_ADAPTEC2, 0x1281)
 9736	},
 9737	{
 9738		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9739			       PCI_VENDOR_ID_ADAPTEC2, 0x1282)
 9740	},
 9741	{
 9742		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9743			       PCI_VENDOR_ID_ADAPTEC2, 0x1300)
 9744	},
 9745	{
 9746		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9747			       PCI_VENDOR_ID_ADAPTEC2, 0x1301)
 9748	},
 9749	{
 9750		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9751			       PCI_VENDOR_ID_ADAPTEC2, 0x1302)
 9752	},
 9753	{
 9754		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9755			       PCI_VENDOR_ID_ADAPTEC2, 0x1303)
 9756	},
 9757	{
 9758		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9759			       PCI_VENDOR_ID_ADAPTEC2, 0x1304)
 9760	},
 9761	{
 9762		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9763			       PCI_VENDOR_ID_ADAPTEC2, 0x1380)
 9764	},
 9765	{
 9766		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9767			       PCI_VENDOR_ID_ADAPTEC2, 0x1400)
 9768	},
 9769	{
 9770		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9771			       PCI_VENDOR_ID_ADAPTEC2, 0x1402)
 9772	},
 9773	{
 9774		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9775			       PCI_VENDOR_ID_ADAPTEC2, 0x1410)
 9776	},
 9777	{
 9778		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9779			       PCI_VENDOR_ID_ADAPTEC2, 0x1411)
 9780	},
 9781	{
 9782		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9783			       PCI_VENDOR_ID_ADAPTEC2, 0x1412)
 9784	},
 9785	{
 9786		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9787			       PCI_VENDOR_ID_ADAPTEC2, 0x1420)
 9788	},
 9789	{
 9790		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9791			       PCI_VENDOR_ID_ADAPTEC2, 0x1430)
 9792	},
 9793	{
 9794		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9795			       PCI_VENDOR_ID_ADAPTEC2, 0x1440)
 9796	},
 9797	{
 9798		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9799			       PCI_VENDOR_ID_ADAPTEC2, 0x1441)
 9800	},
 9801	{
 9802		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9803			       PCI_VENDOR_ID_ADAPTEC2, 0x1450)
 9804	},
 9805	{
 9806		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9807			       PCI_VENDOR_ID_ADAPTEC2, 0x1452)
 9808	},
 9809	{
 9810		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9811			       PCI_VENDOR_ID_ADAPTEC2, 0x1460)
 9812	},
 9813	{
 9814		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9815			       PCI_VENDOR_ID_ADAPTEC2, 0x1461)
 9816	},
 9817	{
 9818		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9819			       PCI_VENDOR_ID_ADAPTEC2, 0x1462)
 9820	},
 9821	{
 9822		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9823			       PCI_VENDOR_ID_ADAPTEC2, 0x1463)
 9824	},
 9825	{
 9826		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9827			       PCI_VENDOR_ID_ADAPTEC2, 0x1470)
 9828	},
 9829	{
 9830		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9831			       PCI_VENDOR_ID_ADAPTEC2, 0x1471)
 9832	},
 9833	{
 9834		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9835			       PCI_VENDOR_ID_ADAPTEC2, 0x1472)
 9836	},
 9837	{
 9838		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9839			       PCI_VENDOR_ID_ADAPTEC2, 0x1473)
 9840	},
 9841	{
 9842		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9843			       PCI_VENDOR_ID_ADAPTEC2, 0x1474)
 9844	},
 9845	{
 9846		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9847			       PCI_VENDOR_ID_ADAPTEC2, 0x1475)
 9848	},
 9849	{
 9850		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9851			       PCI_VENDOR_ID_ADAPTEC2, 0x1480)
 9852	},
 9853	{
 9854		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9855			       PCI_VENDOR_ID_ADAPTEC2, 0x1490)
 9856	},
 9857	{
 9858		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9859			       PCI_VENDOR_ID_ADAPTEC2, 0x1491)
 9860	},
 9861	{
 9862		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9863			       PCI_VENDOR_ID_ADAPTEC2, 0x14a0)
 9864	},
 9865	{
 9866		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9867			       PCI_VENDOR_ID_ADAPTEC2, 0x14a1)
 9868	},
 9869	{
 9870		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9871			       PCI_VENDOR_ID_ADAPTEC2, 0x14a2)
 9872	},
 9873	{
 9874		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9875			       PCI_VENDOR_ID_ADAPTEC2, 0x14a4)
 9876	},
 9877	{
 9878		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9879			       PCI_VENDOR_ID_ADAPTEC2, 0x14a5)
 9880	},
 9881	{
 9882		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9883			       PCI_VENDOR_ID_ADAPTEC2, 0x14a6)
 9884	},
 9885	{
 9886		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9887			       PCI_VENDOR_ID_ADAPTEC2, 0x14b0)
 9888	},
 9889	{
 9890		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9891			       PCI_VENDOR_ID_ADAPTEC2, 0x14b1)
 9892	},
 9893	{
 9894		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9895			       PCI_VENDOR_ID_ADAPTEC2, 0x14c0)
 9896	},
 9897	{
 9898		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9899			       PCI_VENDOR_ID_ADAPTEC2, 0x14c1)
 9900	},
 9901	{
 9902		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9903			       PCI_VENDOR_ID_ADAPTEC2, 0x14c2)
 9904	},
 9905	{
 9906		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9907			       PCI_VENDOR_ID_ADAPTEC2, 0x14c3)
 9908	},
 9909	{
 9910		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9911			       PCI_VENDOR_ID_ADAPTEC2, 0x14c4)
 9912	},
 9913	{
 9914		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9915			       PCI_VENDOR_ID_ADAPTEC2, 0x14d0)
 9916	},
 9917	{
 9918		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9919			       PCI_VENDOR_ID_ADAPTEC2, 0x14e0)
 9920	},
 9921	{
 9922		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9923			       PCI_VENDOR_ID_ADAPTEC2, 0x14f0)
 9924	},
 9925	{
 9926		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9927			       PCI_VENDOR_ID_ADVANTECH, 0x8312)
 9928	},
 9929	{
 9930		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9931			       PCI_VENDOR_ID_DELL, 0x1fe0)
 9932	},
 9933	{
 9934		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9935			       PCI_VENDOR_ID_HP, 0x0600)
 9936	},
 9937	{
 9938		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9939			       PCI_VENDOR_ID_HP, 0x0601)
 9940	},
 9941	{
 9942		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9943			       PCI_VENDOR_ID_HP, 0x0602)
 9944	},
 9945	{
 9946		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9947			       PCI_VENDOR_ID_HP, 0x0603)
 9948	},
 9949	{
 9950		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9951			       PCI_VENDOR_ID_HP, 0x0609)
 9952	},
 9953	{
 9954		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9955			       PCI_VENDOR_ID_HP, 0x0650)
 9956	},
 9957	{
 9958		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9959			       PCI_VENDOR_ID_HP, 0x0651)
 9960	},
 9961	{
 9962		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9963			       PCI_VENDOR_ID_HP, 0x0652)
 9964	},
 9965	{
 9966		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9967			       PCI_VENDOR_ID_HP, 0x0653)
 9968	},
 9969	{
 9970		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9971			       PCI_VENDOR_ID_HP, 0x0654)
 9972	},
 9973	{
 9974		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9975			       PCI_VENDOR_ID_HP, 0x0655)
 9976	},
 9977	{
 9978		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9979			       PCI_VENDOR_ID_HP, 0x0700)
 9980	},
 9981	{
 9982		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9983			       PCI_VENDOR_ID_HP, 0x0701)
 9984	},
 9985	{
 9986		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9987			       PCI_VENDOR_ID_HP, 0x1001)
 9988	},
 9989	{
 9990		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9991			       PCI_VENDOR_ID_HP, 0x1002)
 9992	},
 9993	{
 9994		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9995			       PCI_VENDOR_ID_HP, 0x1100)
 9996	},
 9997	{
 9998		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
 9999			       PCI_VENDOR_ID_HP, 0x1101)
10000	},
10001	{
10002		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10003			       0x1590, 0x0294)
10004	},
10005	{
10006		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10007			       0x1590, 0x02db)
10008	},
10009	{
10010		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10011			       0x1590, 0x02dc)
10012	},
10013	{
10014		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10015			       0x1590, 0x032e)
10016	},
10017	{
10018		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10019			       0x1590, 0x036f)
10020	},
10021	{
10022		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10023			       0x1590, 0x0381)
10024	},
10025	{
10026		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10027			       0x1590, 0x0382)
10028	},
10029	{
10030		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10031			       0x1590, 0x0383)
10032	},
10033	{
10034		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10035			       0x1d8d, 0x0800)
10036	},
10037	{
10038		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10039			       0x1d8d, 0x0908)
10040	},
10041	{
10042		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10043			       0x1d8d, 0x0806)
10044	},
10045	{
10046		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10047			       0x1d8d, 0x0916)
10048	},
10049	{
10050		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10051			       PCI_VENDOR_ID_GIGABYTE, 0x1000)
10052	},
10053	{
10054		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10055			       0x1dfc, 0x3161)
10056	},
10057	{
10058		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10059			       0x1f0c, 0x3161)
10060	},
10061	{
10062		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10063			       0x1cf2, 0x0804)
10064	},
10065	{
10066		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10067			       0x1cf2, 0x0805)
10068	},
10069	{
10070		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10071			       0x1cf2, 0x0806)
10072	},
10073	{
10074		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10075			       0x1cf2, 0x5445)
10076	},
10077	{
10078		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10079			       0x1cf2, 0x5446)
10080	},
10081	{
10082		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10083			       0x1cf2, 0x5447)
10084	},
10085	{
10086		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10087			       0x1cf2, 0x5449)
10088	},
10089	{
10090		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10091			       0x1cf2, 0x544a)
10092	},
10093	{
10094		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10095			       0x1cf2, 0x544b)
10096	},
10097	{
10098		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10099			       0x1cf2, 0x544d)
10100	},
10101	{
10102		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10103			       0x1cf2, 0x544e)
10104	},
10105	{
10106		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10107			       0x1cf2, 0x544f)
10108	},
10109	{
10110		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10111			       0x1cf2, 0x54da)
10112	},
10113	{
10114		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10115			       0x1cf2, 0x54db)
10116	},
10117	{
10118		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10119			       0x1cf2, 0x54dc)
10120	},
10121	{
10122		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10123			       0x1cf2, 0x0b27)
10124	},
10125	{
10126		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10127			       0x1cf2, 0x0b29)
10128	},
10129	{
10130		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10131			       0x1cf2, 0x0b45)
10132	},
10133	{
10134		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10135			       0x1cc4, 0x0101)
10136	},
10137	{
10138		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10139			       0x1cc4, 0x0201)
10140	},
10141	{
10142		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10143			       PCI_VENDOR_ID_LENOVO, 0x0220)
10144	},
10145	{
10146		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10147			       PCI_VENDOR_ID_LENOVO, 0x0221)
10148	},
10149	{
10150		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10151			       PCI_VENDOR_ID_LENOVO, 0x0520)
10152	},
10153	{
10154		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10155			       PCI_VENDOR_ID_LENOVO, 0x0522)
10156	},
10157	{
10158		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10159			       PCI_VENDOR_ID_LENOVO, 0x0620)
10160	},
10161	{
10162		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10163			       PCI_VENDOR_ID_LENOVO, 0x0621)
10164	},
10165	{
10166		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10167			       PCI_VENDOR_ID_LENOVO, 0x0622)
10168	},
10169	{
10170		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10171			       PCI_VENDOR_ID_LENOVO, 0x0623)
10172	},
10173	{
10174		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10175				0x1014, 0x0718)
10176	},
10177	{
10178		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10179			       0x1137, 0x02f8)
10180	},
10181	{
10182		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10183			       0x1137, 0x02f9)
10184	},
10185	{
10186		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10187			       0x1137, 0x02fa)
10188	},
10189	{
10190		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10191				0x1e93, 0x1000)
10192	},
10193	{
10194		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10195				0x1e93, 0x1001)
10196	},
10197	{
10198		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10199				0x1e93, 0x1002)
10200	},
10201	{
10202		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10203				0x1e93, 0x1005)
10204	},
10205	{
10206		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10207				0x1f51, 0x1001)
10208	},
10209	{
10210		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10211				0x1f51, 0x1002)
10212	},
10213	{
10214		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10215				0x1f51, 0x1003)
10216	},
10217	{
10218		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10219				0x1f51, 0x1004)
10220	},
10221	{
10222		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10223				0x1f51, 0x1005)
10224	},
10225	{
10226		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10227				0x1f51, 0x1006)
10228	},
10229	{
10230		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10231				0x1f51, 0x1007)
10232	},
10233	{
10234		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10235				0x1f51, 0x1008)
10236	},
10237	{
10238		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10239				0x1f51, 0x1009)
10240	},
10241	{
10242		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10243				0x1f51, 0x100a)
10244	},
10245	{
10246		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10247			       0x1f51, 0x100e)
10248	},
10249	{
10250		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10251			       0x1f51, 0x100f)
10252	},
10253	{
10254		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10255			       0x1f51, 0x1010)
10256	},
10257	{
10258		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10259			       0x1f51, 0x1011)
10260	},
10261	{
10262		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10263			       0x1f51, 0x1043)
10264	},
10265	{
10266		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10267			       0x1f51, 0x1044)
10268	},
10269	{
10270		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10271			       0x1f51, 0x1045)
10272	},
10273	{
10274		PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
10275			       PCI_ANY_ID, PCI_ANY_ID)
10276	},
10277	{ 0 }
10278};
10279
10280MODULE_DEVICE_TABLE(pci, pqi_pci_id_table);
10281
10282static struct pci_driver pqi_pci_driver = {
10283	.name = DRIVER_NAME_SHORT,
10284	.id_table = pqi_pci_id_table,
10285	.probe = pqi_pci_probe,
10286	.remove = pqi_pci_remove,
10287	.shutdown = pqi_shutdown,
10288#if defined(CONFIG_PM)
10289	.driver = {
10290		.pm = &pqi_pm_ops
10291	},
10292#endif
10293};
10294
10295static int __init pqi_init(void)
10296{
10297	int rc;
10298
10299	pr_info(DRIVER_NAME "\n");
10300	pqi_verify_structures();
10301	sis_verify_structures();
10302
10303	pqi_sas_transport_template = sas_attach_transport(&pqi_sas_transport_functions);
10304	if (!pqi_sas_transport_template)
10305		return -ENODEV;
10306
10307	pqi_process_module_params();
10308
10309	rc = pci_register_driver(&pqi_pci_driver);
10310	if (rc)
10311		sas_release_transport(pqi_sas_transport_template);
10312
10313	return rc;
10314}
10315
10316static void __exit pqi_cleanup(void)
10317{
10318	pci_unregister_driver(&pqi_pci_driver);
10319	sas_release_transport(pqi_sas_transport_template);
10320}
10321
10322module_init(pqi_init);
10323module_exit(pqi_cleanup);
10324
10325static void pqi_verify_structures(void)
10326{
10327	BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
10328		sis_host_to_ctrl_doorbell) != 0x20);
10329	BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
10330		sis_interrupt_mask) != 0x34);
10331	BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
10332		sis_ctrl_to_host_doorbell) != 0x9c);
10333	BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
10334		sis_ctrl_to_host_doorbell_clear) != 0xa0);
10335	BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
10336		sis_driver_scratch) != 0xb0);
10337	BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
10338		sis_product_identifier) != 0xb4);
10339	BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
10340		sis_firmware_status) != 0xbc);
10341	BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
10342		sis_ctrl_shutdown_reason_code) != 0xcc);
10343	BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
10344		sis_mailbox) != 0x1000);
10345	BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
10346		pqi_registers) != 0x4000);
10347
10348	BUILD_BUG_ON(offsetof(struct pqi_iu_header,
10349		iu_type) != 0x0);
10350	BUILD_BUG_ON(offsetof(struct pqi_iu_header,
10351		iu_length) != 0x2);
10352	BUILD_BUG_ON(offsetof(struct pqi_iu_header,
10353		response_queue_id) != 0x4);
10354	BUILD_BUG_ON(offsetof(struct pqi_iu_header,
10355		driver_flags) != 0x6);
10356	BUILD_BUG_ON(sizeof(struct pqi_iu_header) != 0x8);
10357
10358	BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
10359		status) != 0x0);
10360	BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
10361		service_response) != 0x1);
10362	BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
10363		data_present) != 0x2);
10364	BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
10365		reserved) != 0x3);
10366	BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
10367		residual_count) != 0x4);
10368	BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
10369		data_length) != 0x8);
10370	BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
10371		reserved1) != 0xa);
10372	BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
10373		data) != 0xc);
10374	BUILD_BUG_ON(sizeof(struct pqi_aio_error_info) != 0x10c);
10375
10376	BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
10377		data_in_result) != 0x0);
10378	BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
10379		data_out_result) != 0x1);
10380	BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
10381		reserved) != 0x2);
10382	BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
10383		status) != 0x5);
10384	BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
10385		status_qualifier) != 0x6);
10386	BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
10387		sense_data_length) != 0x8);
10388	BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
10389		response_data_length) != 0xa);
10390	BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
10391		data_in_transferred) != 0xc);
10392	BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
10393		data_out_transferred) != 0x10);
10394	BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
10395		data) != 0x14);
10396	BUILD_BUG_ON(sizeof(struct pqi_raid_error_info) != 0x114);
10397
10398	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10399		signature) != 0x0);
10400	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10401		function_and_status_code) != 0x8);
10402	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10403		max_admin_iq_elements) != 0x10);
10404	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10405		max_admin_oq_elements) != 0x11);
10406	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10407		admin_iq_element_length) != 0x12);
10408	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10409		admin_oq_element_length) != 0x13);
10410	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10411		max_reset_timeout) != 0x14);
10412	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10413		legacy_intx_status) != 0x18);
10414	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10415		legacy_intx_mask_set) != 0x1c);
10416	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10417		legacy_intx_mask_clear) != 0x20);
10418	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10419		device_status) != 0x40);
10420	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10421		admin_iq_pi_offset) != 0x48);
10422	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10423		admin_oq_ci_offset) != 0x50);
10424	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10425		admin_iq_element_array_addr) != 0x58);
10426	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10427		admin_oq_element_array_addr) != 0x60);
10428	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10429		admin_iq_ci_addr) != 0x68);
10430	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10431		admin_oq_pi_addr) != 0x70);
10432	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10433		admin_iq_num_elements) != 0x78);
10434	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10435		admin_oq_num_elements) != 0x79);
10436	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10437		admin_queue_int_msg_num) != 0x7a);
10438	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10439		device_error) != 0x80);
10440	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10441		error_details) != 0x88);
10442	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10443		device_reset) != 0x90);
10444	BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10445		power_action) != 0x94);
10446	BUILD_BUG_ON(sizeof(struct pqi_device_registers) != 0x100);
10447
10448	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10449		header.iu_type) != 0);
10450	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10451		header.iu_length) != 2);
10452	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10453		header.driver_flags) != 6);
10454	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10455		request_id) != 8);
10456	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10457		function_code) != 10);
10458	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10459		data.report_device_capability.buffer_length) != 44);
10460	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10461		data.report_device_capability.sg_descriptor) != 48);
10462	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10463		data.create_operational_iq.queue_id) != 12);
10464	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10465		data.create_operational_iq.element_array_addr) != 16);
10466	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10467		data.create_operational_iq.ci_addr) != 24);
10468	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10469		data.create_operational_iq.num_elements) != 32);
10470	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10471		data.create_operational_iq.element_length) != 34);
10472	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10473		data.create_operational_iq.queue_protocol) != 36);
10474	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10475		data.create_operational_oq.queue_id) != 12);
10476	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10477		data.create_operational_oq.element_array_addr) != 16);
10478	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10479		data.create_operational_oq.pi_addr) != 24);
10480	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10481		data.create_operational_oq.num_elements) != 32);
10482	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10483		data.create_operational_oq.element_length) != 34);
10484	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10485		data.create_operational_oq.queue_protocol) != 36);
10486	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10487		data.create_operational_oq.int_msg_num) != 40);
10488	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10489		data.create_operational_oq.coalescing_count) != 42);
10490	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10491		data.create_operational_oq.min_coalescing_time) != 44);
10492	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10493		data.create_operational_oq.max_coalescing_time) != 48);
10494	BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10495		data.delete_operational_queue.queue_id) != 12);
10496	BUILD_BUG_ON(sizeof(struct pqi_general_admin_request) != 64);
10497	BUILD_BUG_ON(sizeof_field(struct pqi_general_admin_request,
10498		data.create_operational_iq) != 64 - 11);
10499	BUILD_BUG_ON(sizeof_field(struct pqi_general_admin_request,
10500		data.create_operational_oq) != 64 - 11);
10501	BUILD_BUG_ON(sizeof_field(struct pqi_general_admin_request,
10502		data.delete_operational_queue) != 64 - 11);
10503
10504	BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
10505		header.iu_type) != 0);
10506	BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
10507		header.iu_length) != 2);
10508	BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
10509		header.driver_flags) != 6);
10510	BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
10511		request_id) != 8);
10512	BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
10513		function_code) != 10);
10514	BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
10515		status) != 11);
10516	BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
10517		data.create_operational_iq.status_descriptor) != 12);
10518	BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
10519		data.create_operational_iq.iq_pi_offset) != 16);
10520	BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
10521		data.create_operational_oq.status_descriptor) != 12);
10522	BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
10523		data.create_operational_oq.oq_ci_offset) != 16);
10524	BUILD_BUG_ON(sizeof(struct pqi_general_admin_response) != 64);
10525
10526	BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10527		header.iu_type) != 0);
10528	BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10529		header.iu_length) != 2);
10530	BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10531		header.response_queue_id) != 4);
10532	BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10533		header.driver_flags) != 6);
10534	BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10535		request_id) != 8);
10536	BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10537		nexus_id) != 10);
10538	BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10539		buffer_length) != 12);
10540	BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10541		lun_number) != 16);
10542	BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10543		protocol_specific) != 24);
10544	BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10545		error_index) != 27);
10546	BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10547		cdb) != 32);
10548	BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10549		timeout) != 60);
10550	BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10551		sg_descriptors) != 64);
10552	BUILD_BUG_ON(sizeof(struct pqi_raid_path_request) !=
10553		PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
10554
10555	BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10556		header.iu_type) != 0);
10557	BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10558		header.iu_length) != 2);
10559	BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10560		header.response_queue_id) != 4);
10561	BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10562		header.driver_flags) != 6);
10563	BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10564		request_id) != 8);
10565	BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10566		nexus_id) != 12);
10567	BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10568		buffer_length) != 16);
10569	BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10570		data_encryption_key_index) != 22);
10571	BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10572		encrypt_tweak_lower) != 24);
10573	BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10574		encrypt_tweak_upper) != 28);
10575	BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10576		cdb) != 32);
10577	BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10578		error_index) != 48);
10579	BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10580		num_sg_descriptors) != 50);
10581	BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10582		cdb_length) != 51);
10583	BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10584		lun_number) != 52);
10585	BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10586		sg_descriptors) != 64);
10587	BUILD_BUG_ON(sizeof(struct pqi_aio_path_request) !=
10588		PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
10589
10590	BUILD_BUG_ON(offsetof(struct pqi_io_response,
10591		header.iu_type) != 0);
10592	BUILD_BUG_ON(offsetof(struct pqi_io_response,
10593		header.iu_length) != 2);
10594	BUILD_BUG_ON(offsetof(struct pqi_io_response,
10595		request_id) != 8);
10596	BUILD_BUG_ON(offsetof(struct pqi_io_response,
10597		error_index) != 10);
10598
10599	BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
10600		header.iu_type) != 0);
10601	BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
10602		header.iu_length) != 2);
10603	BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
10604		header.response_queue_id) != 4);
10605	BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
10606		request_id) != 8);
10607	BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
10608		data.report_event_configuration.buffer_length) != 12);
10609	BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
10610		data.report_event_configuration.sg_descriptors) != 16);
10611	BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
10612		data.set_event_configuration.global_event_oq_id) != 10);
10613	BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
10614		data.set_event_configuration.buffer_length) != 12);
10615	BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
10616		data.set_event_configuration.sg_descriptors) != 16);
10617
10618	BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
10619		max_inbound_iu_length) != 6);
10620	BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
10621		max_outbound_iu_length) != 14);
10622	BUILD_BUG_ON(sizeof(struct pqi_iu_layer_descriptor) != 16);
10623
10624	BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10625		data_length) != 0);
10626	BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10627		iq_arbitration_priority_support_bitmask) != 8);
10628	BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10629		maximum_aw_a) != 9);
10630	BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10631		maximum_aw_b) != 10);
10632	BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10633		maximum_aw_c) != 11);
10634	BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10635		max_inbound_queues) != 16);
10636	BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10637		max_elements_per_iq) != 18);
10638	BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10639		max_iq_element_length) != 24);
10640	BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10641		min_iq_element_length) != 26);
10642	BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10643		max_outbound_queues) != 30);
10644	BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10645		max_elements_per_oq) != 32);
10646	BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10647		intr_coalescing_time_granularity) != 34);
10648	BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10649		max_oq_element_length) != 36);
10650	BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10651		min_oq_element_length) != 38);
10652	BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10653		iu_layer_descriptors) != 64);
10654	BUILD_BUG_ON(sizeof(struct pqi_device_capability) != 576);
10655
10656	BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
10657		event_type) != 0);
10658	BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
10659		oq_id) != 2);
10660	BUILD_BUG_ON(sizeof(struct pqi_event_descriptor) != 4);
10661
10662	BUILD_BUG_ON(offsetof(struct pqi_event_config,
10663		num_event_descriptors) != 2);
10664	BUILD_BUG_ON(offsetof(struct pqi_event_config,
10665		descriptors) != 4);
10666
10667	BUILD_BUG_ON(PQI_NUM_SUPPORTED_EVENTS !=
10668		ARRAY_SIZE(pqi_supported_event_types));
10669
10670	BUILD_BUG_ON(offsetof(struct pqi_event_response,
10671		header.iu_type) != 0);
10672	BUILD_BUG_ON(offsetof(struct pqi_event_response,
10673		header.iu_length) != 2);
10674	BUILD_BUG_ON(offsetof(struct pqi_event_response,
10675		event_type) != 8);
10676	BUILD_BUG_ON(offsetof(struct pqi_event_response,
10677		event_id) != 10);
10678	BUILD_BUG_ON(offsetof(struct pqi_event_response,
10679		additional_event_id) != 12);
10680	BUILD_BUG_ON(offsetof(struct pqi_event_response,
10681		data) != 16);
10682	BUILD_BUG_ON(sizeof(struct pqi_event_response) != 32);
10683
10684	BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
10685		header.iu_type) != 0);
10686	BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
10687		header.iu_length) != 2);
10688	BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
10689		event_type) != 8);
10690	BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
10691		event_id) != 10);
10692	BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
10693		additional_event_id) != 12);
10694	BUILD_BUG_ON(sizeof(struct pqi_event_acknowledge_request) != 16);
10695
10696	BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
10697		header.iu_type) != 0);
10698	BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
10699		header.iu_length) != 2);
10700	BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
10701		request_id) != 8);
10702	BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
10703		nexus_id) != 10);
10704	BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
10705		timeout) != 14);
10706	BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
10707		lun_number) != 16);
10708	BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
10709		protocol_specific) != 24);
10710	BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
10711		outbound_queue_id_to_manage) != 26);
10712	BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
10713		request_id_to_manage) != 28);
10714	BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
10715		task_management_function) != 30);
10716	BUILD_BUG_ON(sizeof(struct pqi_task_management_request) != 32);
10717
10718	BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
10719		header.iu_type) != 0);
10720	BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
10721		header.iu_length) != 2);
10722	BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
10723		request_id) != 8);
10724	BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
10725		nexus_id) != 10);
10726	BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
10727		additional_response_info) != 12);
10728	BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
10729		response_code) != 15);
10730	BUILD_BUG_ON(sizeof(struct pqi_task_management_response) != 16);
10731
10732	BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10733		configured_logical_drive_count) != 0);
10734	BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10735		configuration_signature) != 1);
10736	BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10737		firmware_version_short) != 5);
10738	BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10739		extended_logical_unit_count) != 154);
10740	BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10741		firmware_build_number) != 190);
10742	BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10743		vendor_id) != 200);
10744	BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10745		product_id) != 208);
10746	BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10747		extra_controller_flags) != 286);
10748	BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10749		controller_mode) != 292);
10750	BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10751		spare_part_number) != 293);
10752	BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10753		firmware_version_long) != 325);
10754
10755	BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
10756		phys_bay_in_box) != 115);
10757	BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
10758		device_type) != 120);
10759	BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
10760		redundant_path_present_map) != 1736);
10761	BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
10762		active_path_number) != 1738);
10763	BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
10764		alternate_paths_phys_connector) != 1739);
10765	BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
10766		alternate_paths_phys_box_on_port) != 1755);
10767	BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
10768		current_queue_depth_limit) != 1796);
10769	BUILD_BUG_ON(sizeof(struct bmic_identify_physical_device) != 2560);
10770
10771	BUILD_BUG_ON(sizeof(struct bmic_sense_feature_buffer_header) != 4);
10772	BUILD_BUG_ON(offsetof(struct bmic_sense_feature_buffer_header,
10773		page_code) != 0);
10774	BUILD_BUG_ON(offsetof(struct bmic_sense_feature_buffer_header,
10775		subpage_code) != 1);
10776	BUILD_BUG_ON(offsetof(struct bmic_sense_feature_buffer_header,
10777		buffer_length) != 2);
10778
10779	BUILD_BUG_ON(sizeof(struct bmic_sense_feature_page_header) != 4);
10780	BUILD_BUG_ON(offsetof(struct bmic_sense_feature_page_header,
10781		page_code) != 0);
10782	BUILD_BUG_ON(offsetof(struct bmic_sense_feature_page_header,
10783		subpage_code) != 1);
10784	BUILD_BUG_ON(offsetof(struct bmic_sense_feature_page_header,
10785		page_length) != 2);
10786
10787	BUILD_BUG_ON(sizeof(struct bmic_sense_feature_io_page_aio_subpage)
10788		!= 18);
10789	BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
10790		header) != 0);
10791	BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
10792		firmware_read_support) != 4);
10793	BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
10794		driver_read_support) != 5);
10795	BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
10796		firmware_write_support) != 6);
10797	BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
10798		driver_write_support) != 7);
10799	BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
10800		max_transfer_encrypted_sas_sata) != 8);
10801	BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
10802		max_transfer_encrypted_nvme) != 10);
10803	BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
10804		max_write_raid_5_6) != 12);
10805	BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
10806		max_write_raid_1_10_2drive) != 14);
10807	BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
10808		max_write_raid_1_10_3drive) != 16);
10809
10810	BUILD_BUG_ON(PQI_ADMIN_IQ_NUM_ELEMENTS > 255);
10811	BUILD_BUG_ON(PQI_ADMIN_OQ_NUM_ELEMENTS > 255);
10812	BUILD_BUG_ON(PQI_ADMIN_IQ_ELEMENT_LENGTH %
10813		PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
10814	BUILD_BUG_ON(PQI_ADMIN_OQ_ELEMENT_LENGTH %
10815		PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
10816	BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH > 1048560);
10817	BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH %
10818		PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
10819	BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH > 1048560);
10820	BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH %
10821		PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
10822
10823	BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >= PQI_MAX_OUTSTANDING_REQUESTS);
10824	BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >=
10825		PQI_MAX_OUTSTANDING_REQUESTS_KDUMP);
10826}