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1/*
2 *
3 * Linux MegaRAID device driver
4 *
5 * Copyright (c) 2002 LSI Logic Corporation.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
11 *
12 * Copyright (c) 2002 Red Hat, Inc. All rights reserved.
13 * - fixes
14 * - speed-ups (list handling fixes, issued_list, optimizations.)
15 * - lots of cleanups.
16 *
17 * Copyright (c) 2003 Christoph Hellwig <hch@lst.de>
18 * - new-style, hotplug-aware pci probing and scsi registration
19 *
20 * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju
21 * <Seokmann.Ju@lsil.com>
22 *
23 * Description: Linux device driver for LSI Logic MegaRAID controller
24 *
25 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493
26 * 518, 520, 531, 532
27 *
28 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,
29 * and others. Please send updates to the mailing list
30 * linux-scsi@vger.kernel.org .
31 *
32 */
33
34#include <linux/mm.h>
35#include <linux/fs.h>
36#include <linux/blkdev.h>
37#include <linux/uaccess.h>
38#include <asm/io.h>
39#include <linux/completion.h>
40#include <linux/delay.h>
41#include <linux/proc_fs.h>
42#include <linux/seq_file.h>
43#include <linux/reboot.h>
44#include <linux/module.h>
45#include <linux/list.h>
46#include <linux/interrupt.h>
47#include <linux/pci.h>
48#include <linux/init.h>
49#include <linux/dma-mapping.h>
50#include <linux/mutex.h>
51#include <linux/slab.h>
52#include <scsi/scsicam.h>
53
54#include "scsi.h"
55#include <scsi/scsi_host.h>
56
57#include "megaraid.h"
58
59#define MEGARAID_MODULE_VERSION "2.00.4"
60
61MODULE_AUTHOR ("sju@lsil.com");
62MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver");
63MODULE_LICENSE ("GPL");
64MODULE_VERSION(MEGARAID_MODULE_VERSION);
65
66static DEFINE_MUTEX(megadev_mutex);
67static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
68module_param(max_cmd_per_lun, uint, 0);
69MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)");
70
71static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
72module_param(max_sectors_per_io, ushort, 0);
73MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
74
75
76static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
77module_param(max_mbox_busy_wait, ushort, 0);
78MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
79
80#define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20)
81#define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C)
82#define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20)
83#define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C)
84
85/*
86 * Global variables
87 */
88
89static int hba_count;
90static adapter_t *hba_soft_state[MAX_CONTROLLERS];
91static struct proc_dir_entry *mega_proc_dir_entry;
92
93/* For controller re-ordering */
94static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
95
96static long
97megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
98
99/*
100 * The File Operations structure for the serial/ioctl interface of the driver
101 */
102static const struct file_operations megadev_fops = {
103 .owner = THIS_MODULE,
104 .unlocked_ioctl = megadev_unlocked_ioctl,
105 .open = megadev_open,
106 .llseek = noop_llseek,
107};
108
109/*
110 * Array to structures for storing the information about the controllers. This
111 * information is sent to the user level applications, when they do an ioctl
112 * for this information.
113 */
114static struct mcontroller mcontroller[MAX_CONTROLLERS];
115
116/* The current driver version */
117static u32 driver_ver = 0x02000000;
118
119/* major number used by the device for character interface */
120static int major;
121
122#define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)
123
124
125/*
126 * Debug variable to print some diagnostic messages
127 */
128static int trace_level;
129
130/**
131 * mega_setup_mailbox()
132 * @adapter - pointer to our soft state
133 *
134 * Allocates a 8 byte aligned memory for the handshake mailbox.
135 */
136static int
137mega_setup_mailbox(adapter_t *adapter)
138{
139 unsigned long align;
140
141 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev,
142 sizeof(mbox64_t), &adapter->una_mbox64_dma);
143
144 if( !adapter->una_mbox64 ) return -1;
145
146 adapter->mbox = &adapter->una_mbox64->mbox;
147
148 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
149 (~0UL ^ 0xFUL));
150
151 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
152
153 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
154
155 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
156
157 /*
158 * Register the mailbox if the controller is an io-mapped controller
159 */
160 if( adapter->flag & BOARD_IOMAP ) {
161
162 outb(adapter->mbox_dma & 0xFF,
163 adapter->host->io_port + MBOX_PORT0);
164
165 outb((adapter->mbox_dma >> 8) & 0xFF,
166 adapter->host->io_port + MBOX_PORT1);
167
168 outb((adapter->mbox_dma >> 16) & 0xFF,
169 adapter->host->io_port + MBOX_PORT2);
170
171 outb((adapter->mbox_dma >> 24) & 0xFF,
172 adapter->host->io_port + MBOX_PORT3);
173
174 outb(ENABLE_MBOX_BYTE,
175 adapter->host->io_port + ENABLE_MBOX_REGION);
176
177 irq_ack(adapter);
178
179 irq_enable(adapter);
180 }
181
182 return 0;
183}
184
185
186/*
187 * mega_query_adapter()
188 * @adapter - pointer to our soft state
189 *
190 * Issue the adapter inquiry commands to the controller and find out
191 * information and parameter about the devices attached
192 */
193static int
194mega_query_adapter(adapter_t *adapter)
195{
196 dma_addr_t prod_info_dma_handle;
197 mega_inquiry3 *inquiry3;
198 u8 raw_mbox[sizeof(struct mbox_out)];
199 mbox_t *mbox;
200 int retval;
201
202 /* Initialize adapter inquiry mailbox */
203
204 mbox = (mbox_t *)raw_mbox;
205
206 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
207 memset(&mbox->m_out, 0, sizeof(raw_mbox));
208
209 /*
210 * Try to issue Inquiry3 command
211 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
212 * update enquiry3 structure
213 */
214 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
215
216 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
217
218 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
219 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */
220 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */
221
222 /* Issue a blocking command to the card */
223 if ((retval = issue_scb_block(adapter, raw_mbox))) {
224 /* the adapter does not support 40ld */
225
226 mraid_ext_inquiry *ext_inq;
227 mraid_inquiry *inq;
228 dma_addr_t dma_handle;
229
230 ext_inq = pci_alloc_consistent(adapter->dev,
231 sizeof(mraid_ext_inquiry), &dma_handle);
232
233 if( ext_inq == NULL ) return -1;
234
235 inq = &ext_inq->raid_inq;
236
237 mbox->m_out.xferaddr = (u32)dma_handle;
238
239 /*issue old 0x04 command to adapter */
240 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
241
242 issue_scb_block(adapter, raw_mbox);
243
244 /*
245 * update Enquiry3 and ProductInfo structures with
246 * mraid_inquiry structure
247 */
248 mega_8_to_40ld(inq, inquiry3,
249 (mega_product_info *)&adapter->product_info);
250
251 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
252 ext_inq, dma_handle);
253
254 } else { /*adapter supports 40ld */
255 adapter->flag |= BOARD_40LD;
256
257 /*
258 * get product_info, which is static information and will be
259 * unchanged
260 */
261 prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
262 &adapter->product_info,
263 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
264
265 mbox->m_out.xferaddr = prod_info_dma_handle;
266
267 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
268 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */
269
270 if ((retval = issue_scb_block(adapter, raw_mbox)))
271 dev_warn(&adapter->dev->dev,
272 "Product_info cmd failed with error: %d\n",
273 retval);
274
275 pci_unmap_single(adapter->dev, prod_info_dma_handle,
276 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
277 }
278
279
280 /*
281 * kernel scans the channels from 0 to <= max_channel
282 */
283 adapter->host->max_channel =
284 adapter->product_info.nchannels + NVIRT_CHAN -1;
285
286 adapter->host->max_id = 16; /* max targets per channel */
287
288 adapter->host->max_lun = 7; /* Up to 7 luns for non disk devices */
289
290 adapter->host->cmd_per_lun = max_cmd_per_lun;
291
292 adapter->numldrv = inquiry3->num_ldrv;
293
294 adapter->max_cmds = adapter->product_info.max_commands;
295
296 if(adapter->max_cmds > MAX_COMMANDS)
297 adapter->max_cmds = MAX_COMMANDS;
298
299 adapter->host->can_queue = adapter->max_cmds - 1;
300
301 /*
302 * Get the maximum number of scatter-gather elements supported by this
303 * firmware
304 */
305 mega_get_max_sgl(adapter);
306
307 adapter->host->sg_tablesize = adapter->sglen;
308
309 /* use HP firmware and bios version encoding
310 Note: fw_version[0|1] and bios_version[0|1] were originally shifted
311 right 8 bits making them zero. This 0 value was hardcoded to fix
312 sparse warnings. */
313 if (adapter->product_info.subsysvid == PCI_VENDOR_ID_HP) {
314 sprintf (adapter->fw_version, "%c%d%d.%d%d",
315 adapter->product_info.fw_version[2],
316 0,
317 adapter->product_info.fw_version[1] & 0x0f,
318 0,
319 adapter->product_info.fw_version[0] & 0x0f);
320 sprintf (adapter->bios_version, "%c%d%d.%d%d",
321 adapter->product_info.bios_version[2],
322 0,
323 adapter->product_info.bios_version[1] & 0x0f,
324 0,
325 adapter->product_info.bios_version[0] & 0x0f);
326 } else {
327 memcpy(adapter->fw_version,
328 (char *)adapter->product_info.fw_version, 4);
329 adapter->fw_version[4] = 0;
330
331 memcpy(adapter->bios_version,
332 (char *)adapter->product_info.bios_version, 4);
333
334 adapter->bios_version[4] = 0;
335 }
336
337 dev_notice(&adapter->dev->dev, "[%s:%s] detected %d logical drives\n",
338 adapter->fw_version, adapter->bios_version, adapter->numldrv);
339
340 /*
341 * Do we support extended (>10 bytes) cdbs
342 */
343 adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
344 if (adapter->support_ext_cdb)
345 dev_notice(&adapter->dev->dev, "supports extended CDBs\n");
346
347
348 return 0;
349}
350
351/**
352 * mega_runpendq()
353 * @adapter - pointer to our soft state
354 *
355 * Runs through the list of pending requests.
356 */
357static inline void
358mega_runpendq(adapter_t *adapter)
359{
360 if(!list_empty(&adapter->pending_list))
361 __mega_runpendq(adapter);
362}
363
364/*
365 * megaraid_queue()
366 * @scmd - Issue this scsi command
367 * @done - the callback hook into the scsi mid-layer
368 *
369 * The command queuing entry point for the mid-layer.
370 */
371static int
372megaraid_queue_lck(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *))
373{
374 adapter_t *adapter;
375 scb_t *scb;
376 int busy=0;
377 unsigned long flags;
378
379 adapter = (adapter_t *)scmd->device->host->hostdata;
380
381 scmd->scsi_done = done;
382
383
384 /*
385 * Allocate and build a SCB request
386 * busy flag will be set if mega_build_cmd() command could not
387 * allocate scb. We will return non-zero status in that case.
388 * NOTE: scb can be null even though certain commands completed
389 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
390 * return 0 in that case.
391 */
392
393 spin_lock_irqsave(&adapter->lock, flags);
394 scb = mega_build_cmd(adapter, scmd, &busy);
395 if (!scb)
396 goto out;
397
398 scb->state |= SCB_PENDQ;
399 list_add_tail(&scb->list, &adapter->pending_list);
400
401 /*
402 * Check if the HBA is in quiescent state, e.g., during a
403 * delete logical drive opertion. If it is, don't run
404 * the pending_list.
405 */
406 if (atomic_read(&adapter->quiescent) == 0)
407 mega_runpendq(adapter);
408
409 busy = 0;
410 out:
411 spin_unlock_irqrestore(&adapter->lock, flags);
412 return busy;
413}
414
415static DEF_SCSI_QCMD(megaraid_queue)
416
417/**
418 * mega_allocate_scb()
419 * @adapter - pointer to our soft state
420 * @cmd - scsi command from the mid-layer
421 *
422 * Allocate a SCB structure. This is the central structure for controller
423 * commands.
424 */
425static inline scb_t *
426mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd)
427{
428 struct list_head *head = &adapter->free_list;
429 scb_t *scb;
430
431 /* Unlink command from Free List */
432 if( !list_empty(head) ) {
433
434 scb = list_entry(head->next, scb_t, list);
435
436 list_del_init(head->next);
437
438 scb->state = SCB_ACTIVE;
439 scb->cmd = cmd;
440 scb->dma_type = MEGA_DMA_TYPE_NONE;
441
442 return scb;
443 }
444
445 return NULL;
446}
447
448/**
449 * mega_get_ldrv_num()
450 * @adapter - pointer to our soft state
451 * @cmd - scsi mid layer command
452 * @channel - channel on the controller
453 *
454 * Calculate the logical drive number based on the information in scsi command
455 * and the channel number.
456 */
457static inline int
458mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel)
459{
460 int tgt;
461 int ldrv_num;
462
463 tgt = cmd->device->id;
464
465 if ( tgt > adapter->this_id )
466 tgt--; /* we do not get inquires for initiator id */
467
468 ldrv_num = (channel * 15) + tgt;
469
470
471 /*
472 * If we have a logical drive with boot enabled, project it first
473 */
474 if( adapter->boot_ldrv_enabled ) {
475 if( ldrv_num == 0 ) {
476 ldrv_num = adapter->boot_ldrv;
477 }
478 else {
479 if( ldrv_num <= adapter->boot_ldrv ) {
480 ldrv_num--;
481 }
482 }
483 }
484
485 /*
486 * If "delete logical drive" feature is enabled on this controller.
487 * Do only if at least one delete logical drive operation was done.
488 *
489 * Also, after logical drive deletion, instead of logical drive number,
490 * the value returned should be 0x80+logical drive id.
491 *
492 * These is valid only for IO commands.
493 */
494
495 if (adapter->support_random_del && adapter->read_ldidmap )
496 switch (cmd->cmnd[0]) {
497 case READ_6: /* fall through */
498 case WRITE_6: /* fall through */
499 case READ_10: /* fall through */
500 case WRITE_10:
501 ldrv_num += 0x80;
502 }
503
504 return ldrv_num;
505}
506
507/**
508 * mega_build_cmd()
509 * @adapter - pointer to our soft state
510 * @cmd - Prepare using this scsi command
511 * @busy - busy flag if no resources
512 *
513 * Prepares a command and scatter gather list for the controller. This routine
514 * also finds out if the commands is intended for a logical drive or a
515 * physical device and prepares the controller command accordingly.
516 *
517 * We also re-order the logical drives and physical devices based on their
518 * boot settings.
519 */
520static scb_t *
521mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
522{
523 mega_ext_passthru *epthru;
524 mega_passthru *pthru;
525 scb_t *scb;
526 mbox_t *mbox;
527 u32 seg;
528 char islogical;
529 int max_ldrv_num;
530 int channel = 0;
531 int target = 0;
532 int ldrv_num = 0; /* logical drive number */
533
534 /*
535 * We know what channels our logical drives are on - mega_find_card()
536 */
537 islogical = adapter->logdrv_chan[cmd->device->channel];
538
539 /*
540 * The theory: If physical drive is chosen for boot, all the physical
541 * devices are exported before the logical drives, otherwise physical
542 * devices are pushed after logical drives, in which case - Kernel sees
543 * the physical devices on virtual channel which is obviously converted
544 * to actual channel on the HBA.
545 */
546 if( adapter->boot_pdrv_enabled ) {
547 if( islogical ) {
548 /* logical channel */
549 channel = cmd->device->channel -
550 adapter->product_info.nchannels;
551 }
552 else {
553 /* this is physical channel */
554 channel = cmd->device->channel;
555 target = cmd->device->id;
556
557 /*
558 * boot from a physical disk, that disk needs to be
559 * exposed first IF both the channels are SCSI, then
560 * booting from the second channel is not allowed.
561 */
562 if( target == 0 ) {
563 target = adapter->boot_pdrv_tgt;
564 }
565 else if( target == adapter->boot_pdrv_tgt ) {
566 target = 0;
567 }
568 }
569 }
570 else {
571 if( islogical ) {
572 /* this is the logical channel */
573 channel = cmd->device->channel;
574 }
575 else {
576 /* physical channel */
577 channel = cmd->device->channel - NVIRT_CHAN;
578 target = cmd->device->id;
579 }
580 }
581
582
583 if(islogical) {
584
585 /* have just LUN 0 for each target on virtual channels */
586 if (cmd->device->lun) {
587 cmd->result = (DID_BAD_TARGET << 16);
588 cmd->scsi_done(cmd);
589 return NULL;
590 }
591
592 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
593
594
595 max_ldrv_num = (adapter->flag & BOARD_40LD) ?
596 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
597
598 /*
599 * max_ldrv_num increases by 0x80 if some logical drive was
600 * deleted.
601 */
602 if(adapter->read_ldidmap)
603 max_ldrv_num += 0x80;
604
605 if(ldrv_num > max_ldrv_num ) {
606 cmd->result = (DID_BAD_TARGET << 16);
607 cmd->scsi_done(cmd);
608 return NULL;
609 }
610
611 }
612 else {
613 if( cmd->device->lun > 7) {
614 /*
615 * Do not support lun >7 for physically accessed
616 * devices
617 */
618 cmd->result = (DID_BAD_TARGET << 16);
619 cmd->scsi_done(cmd);
620 return NULL;
621 }
622 }
623
624 /*
625 *
626 * Logical drive commands
627 *
628 */
629 if(islogical) {
630 switch (cmd->cmnd[0]) {
631 case TEST_UNIT_READY:
632#if MEGA_HAVE_CLUSTERING
633 /*
634 * Do we support clustering and is the support enabled
635 * If no, return success always
636 */
637 if( !adapter->has_cluster ) {
638 cmd->result = (DID_OK << 16);
639 cmd->scsi_done(cmd);
640 return NULL;
641 }
642
643 if(!(scb = mega_allocate_scb(adapter, cmd))) {
644 *busy = 1;
645 return NULL;
646 }
647
648 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
649 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
650 scb->raw_mbox[3] = ldrv_num;
651
652 scb->dma_direction = PCI_DMA_NONE;
653
654 return scb;
655#else
656 cmd->result = (DID_OK << 16);
657 cmd->scsi_done(cmd);
658 return NULL;
659#endif
660
661 case MODE_SENSE: {
662 char *buf;
663 struct scatterlist *sg;
664
665 sg = scsi_sglist(cmd);
666 buf = kmap_atomic(sg_page(sg)) + sg->offset;
667
668 memset(buf, 0, cmd->cmnd[4]);
669 kunmap_atomic(buf - sg->offset);
670
671 cmd->result = (DID_OK << 16);
672 cmd->scsi_done(cmd);
673 return NULL;
674 }
675
676 case READ_CAPACITY:
677 case INQUIRY:
678
679 if(!(adapter->flag & (1L << cmd->device->channel))) {
680
681 dev_notice(&adapter->dev->dev,
682 "scsi%d: scanning scsi channel %d "
683 "for logical drives\n",
684 adapter->host->host_no,
685 cmd->device->channel);
686
687 adapter->flag |= (1L << cmd->device->channel);
688 }
689
690 /* Allocate a SCB and initialize passthru */
691 if(!(scb = mega_allocate_scb(adapter, cmd))) {
692 *busy = 1;
693 return NULL;
694 }
695 pthru = scb->pthru;
696
697 mbox = (mbox_t *)scb->raw_mbox;
698 memset(mbox, 0, sizeof(scb->raw_mbox));
699 memset(pthru, 0, sizeof(mega_passthru));
700
701 pthru->timeout = 0;
702 pthru->ars = 1;
703 pthru->reqsenselen = 14;
704 pthru->islogical = 1;
705 pthru->logdrv = ldrv_num;
706 pthru->cdblen = cmd->cmd_len;
707 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
708
709 if( adapter->has_64bit_addr ) {
710 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
711 }
712 else {
713 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
714 }
715
716 scb->dma_direction = PCI_DMA_FROMDEVICE;
717
718 pthru->numsgelements = mega_build_sglist(adapter, scb,
719 &pthru->dataxferaddr, &pthru->dataxferlen);
720
721 mbox->m_out.xferaddr = scb->pthru_dma_addr;
722
723 return scb;
724
725 case READ_6:
726 case WRITE_6:
727 case READ_10:
728 case WRITE_10:
729 case READ_12:
730 case WRITE_12:
731
732 /* Allocate a SCB and initialize mailbox */
733 if(!(scb = mega_allocate_scb(adapter, cmd))) {
734 *busy = 1;
735 return NULL;
736 }
737 mbox = (mbox_t *)scb->raw_mbox;
738
739 memset(mbox, 0, sizeof(scb->raw_mbox));
740 mbox->m_out.logdrv = ldrv_num;
741
742 /*
743 * A little hack: 2nd bit is zero for all scsi read
744 * commands and is set for all scsi write commands
745 */
746 if( adapter->has_64bit_addr ) {
747 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
748 MEGA_MBOXCMD_LWRITE64:
749 MEGA_MBOXCMD_LREAD64 ;
750 }
751 else {
752 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
753 MEGA_MBOXCMD_LWRITE:
754 MEGA_MBOXCMD_LREAD ;
755 }
756
757 /*
758 * 6-byte READ(0x08) or WRITE(0x0A) cdb
759 */
760 if( cmd->cmd_len == 6 ) {
761 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
762 mbox->m_out.lba =
763 ((u32)cmd->cmnd[1] << 16) |
764 ((u32)cmd->cmnd[2] << 8) |
765 (u32)cmd->cmnd[3];
766
767 mbox->m_out.lba &= 0x1FFFFF;
768
769#if MEGA_HAVE_STATS
770 /*
771 * Take modulo 0x80, since the logical drive
772 * number increases by 0x80 when a logical
773 * drive was deleted
774 */
775 if (*cmd->cmnd == READ_6) {
776 adapter->nreads[ldrv_num%0x80]++;
777 adapter->nreadblocks[ldrv_num%0x80] +=
778 mbox->m_out.numsectors;
779 } else {
780 adapter->nwrites[ldrv_num%0x80]++;
781 adapter->nwriteblocks[ldrv_num%0x80] +=
782 mbox->m_out.numsectors;
783 }
784#endif
785 }
786
787 /*
788 * 10-byte READ(0x28) or WRITE(0x2A) cdb
789 */
790 if( cmd->cmd_len == 10 ) {
791 mbox->m_out.numsectors =
792 (u32)cmd->cmnd[8] |
793 ((u32)cmd->cmnd[7] << 8);
794 mbox->m_out.lba =
795 ((u32)cmd->cmnd[2] << 24) |
796 ((u32)cmd->cmnd[3] << 16) |
797 ((u32)cmd->cmnd[4] << 8) |
798 (u32)cmd->cmnd[5];
799
800#if MEGA_HAVE_STATS
801 if (*cmd->cmnd == READ_10) {
802 adapter->nreads[ldrv_num%0x80]++;
803 adapter->nreadblocks[ldrv_num%0x80] +=
804 mbox->m_out.numsectors;
805 } else {
806 adapter->nwrites[ldrv_num%0x80]++;
807 adapter->nwriteblocks[ldrv_num%0x80] +=
808 mbox->m_out.numsectors;
809 }
810#endif
811 }
812
813 /*
814 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
815 */
816 if( cmd->cmd_len == 12 ) {
817 mbox->m_out.lba =
818 ((u32)cmd->cmnd[2] << 24) |
819 ((u32)cmd->cmnd[3] << 16) |
820 ((u32)cmd->cmnd[4] << 8) |
821 (u32)cmd->cmnd[5];
822
823 mbox->m_out.numsectors =
824 ((u32)cmd->cmnd[6] << 24) |
825 ((u32)cmd->cmnd[7] << 16) |
826 ((u32)cmd->cmnd[8] << 8) |
827 (u32)cmd->cmnd[9];
828
829#if MEGA_HAVE_STATS
830 if (*cmd->cmnd == READ_12) {
831 adapter->nreads[ldrv_num%0x80]++;
832 adapter->nreadblocks[ldrv_num%0x80] +=
833 mbox->m_out.numsectors;
834 } else {
835 adapter->nwrites[ldrv_num%0x80]++;
836 adapter->nwriteblocks[ldrv_num%0x80] +=
837 mbox->m_out.numsectors;
838 }
839#endif
840 }
841
842 /*
843 * If it is a read command
844 */
845 if( (*cmd->cmnd & 0x0F) == 0x08 ) {
846 scb->dma_direction = PCI_DMA_FROMDEVICE;
847 }
848 else {
849 scb->dma_direction = PCI_DMA_TODEVICE;
850 }
851
852 /* Calculate Scatter-Gather info */
853 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
854 (u32 *)&mbox->m_out.xferaddr, &seg);
855
856 return scb;
857
858#if MEGA_HAVE_CLUSTERING
859 case RESERVE: /* Fall through */
860 case RELEASE:
861
862 /*
863 * Do we support clustering and is the support enabled
864 */
865 if( ! adapter->has_cluster ) {
866
867 cmd->result = (DID_BAD_TARGET << 16);
868 cmd->scsi_done(cmd);
869 return NULL;
870 }
871
872 /* Allocate a SCB and initialize mailbox */
873 if(!(scb = mega_allocate_scb(adapter, cmd))) {
874 *busy = 1;
875 return NULL;
876 }
877
878 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
879 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
880 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
881
882 scb->raw_mbox[3] = ldrv_num;
883
884 scb->dma_direction = PCI_DMA_NONE;
885
886 return scb;
887#endif
888
889 default:
890 cmd->result = (DID_BAD_TARGET << 16);
891 cmd->scsi_done(cmd);
892 return NULL;
893 }
894 }
895
896 /*
897 * Passthru drive commands
898 */
899 else {
900 /* Allocate a SCB and initialize passthru */
901 if(!(scb = mega_allocate_scb(adapter, cmd))) {
902 *busy = 1;
903 return NULL;
904 }
905
906 mbox = (mbox_t *)scb->raw_mbox;
907 memset(mbox, 0, sizeof(scb->raw_mbox));
908
909 if( adapter->support_ext_cdb ) {
910
911 epthru = mega_prepare_extpassthru(adapter, scb, cmd,
912 channel, target);
913
914 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
915
916 mbox->m_out.xferaddr = scb->epthru_dma_addr;
917
918 }
919 else {
920
921 pthru = mega_prepare_passthru(adapter, scb, cmd,
922 channel, target);
923
924 /* Initialize mailbox */
925 if( adapter->has_64bit_addr ) {
926 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
927 }
928 else {
929 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
930 }
931
932 mbox->m_out.xferaddr = scb->pthru_dma_addr;
933
934 }
935 return scb;
936 }
937 return NULL;
938}
939
940
941/**
942 * mega_prepare_passthru()
943 * @adapter - pointer to our soft state
944 * @scb - our scsi control block
945 * @cmd - scsi command from the mid-layer
946 * @channel - actual channel on the controller
947 * @target - actual id on the controller.
948 *
949 * prepare a command for the scsi physical devices.
950 */
951static mega_passthru *
952mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
953 int channel, int target)
954{
955 mega_passthru *pthru;
956
957 pthru = scb->pthru;
958 memset(pthru, 0, sizeof (mega_passthru));
959
960 /* 0=6sec/1=60sec/2=10min/3=3hrs */
961 pthru->timeout = 2;
962
963 pthru->ars = 1;
964 pthru->reqsenselen = 14;
965 pthru->islogical = 0;
966
967 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
968
969 pthru->target = (adapter->flag & BOARD_40LD) ?
970 (channel << 4) | target : target;
971
972 pthru->cdblen = cmd->cmd_len;
973 pthru->logdrv = cmd->device->lun;
974
975 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
976
977 /* Not sure about the direction */
978 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
979
980 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
981 switch (cmd->cmnd[0]) {
982 case INQUIRY:
983 case READ_CAPACITY:
984 if(!(adapter->flag & (1L << cmd->device->channel))) {
985
986 dev_notice(&adapter->dev->dev,
987 "scsi%d: scanning scsi channel %d [P%d] "
988 "for physical devices\n",
989 adapter->host->host_no,
990 cmd->device->channel, channel);
991
992 adapter->flag |= (1L << cmd->device->channel);
993 }
994 /* Fall through */
995 default:
996 pthru->numsgelements = mega_build_sglist(adapter, scb,
997 &pthru->dataxferaddr, &pthru->dataxferlen);
998 break;
999 }
1000 return pthru;
1001}
1002
1003
1004/**
1005 * mega_prepare_extpassthru()
1006 * @adapter - pointer to our soft state
1007 * @scb - our scsi control block
1008 * @cmd - scsi command from the mid-layer
1009 * @channel - actual channel on the controller
1010 * @target - actual id on the controller.
1011 *
1012 * prepare a command for the scsi physical devices. This rountine prepares
1013 * commands for devices which can take extended CDBs (>10 bytes)
1014 */
1015static mega_ext_passthru *
1016mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1017 int channel, int target)
1018{
1019 mega_ext_passthru *epthru;
1020
1021 epthru = scb->epthru;
1022 memset(epthru, 0, sizeof(mega_ext_passthru));
1023
1024 /* 0=6sec/1=60sec/2=10min/3=3hrs */
1025 epthru->timeout = 2;
1026
1027 epthru->ars = 1;
1028 epthru->reqsenselen = 14;
1029 epthru->islogical = 0;
1030
1031 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1032 epthru->target = (adapter->flag & BOARD_40LD) ?
1033 (channel << 4) | target : target;
1034
1035 epthru->cdblen = cmd->cmd_len;
1036 epthru->logdrv = cmd->device->lun;
1037
1038 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1039
1040 /* Not sure about the direction */
1041 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1042
1043 switch(cmd->cmnd[0]) {
1044 case INQUIRY:
1045 case READ_CAPACITY:
1046 if(!(adapter->flag & (1L << cmd->device->channel))) {
1047
1048 dev_notice(&adapter->dev->dev,
1049 "scsi%d: scanning scsi channel %d [P%d] "
1050 "for physical devices\n",
1051 adapter->host->host_no,
1052 cmd->device->channel, channel);
1053
1054 adapter->flag |= (1L << cmd->device->channel);
1055 }
1056 /* Fall through */
1057 default:
1058 epthru->numsgelements = mega_build_sglist(adapter, scb,
1059 &epthru->dataxferaddr, &epthru->dataxferlen);
1060 break;
1061 }
1062
1063 return epthru;
1064}
1065
1066static void
1067__mega_runpendq(adapter_t *adapter)
1068{
1069 scb_t *scb;
1070 struct list_head *pos, *next;
1071
1072 /* Issue any pending commands to the card */
1073 list_for_each_safe(pos, next, &adapter->pending_list) {
1074
1075 scb = list_entry(pos, scb_t, list);
1076
1077 if( !(scb->state & SCB_ISSUED) ) {
1078
1079 if( issue_scb(adapter, scb) != 0 )
1080 return;
1081 }
1082 }
1083
1084 return;
1085}
1086
1087
1088/**
1089 * issue_scb()
1090 * @adapter - pointer to our soft state
1091 * @scb - scsi control block
1092 *
1093 * Post a command to the card if the mailbox is available, otherwise return
1094 * busy. We also take the scb from the pending list if the mailbox is
1095 * available.
1096 */
1097static int
1098issue_scb(adapter_t *adapter, scb_t *scb)
1099{
1100 volatile mbox64_t *mbox64 = adapter->mbox64;
1101 volatile mbox_t *mbox = adapter->mbox;
1102 unsigned int i = 0;
1103
1104 if(unlikely(mbox->m_in.busy)) {
1105 do {
1106 udelay(1);
1107 i++;
1108 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1109
1110 if(mbox->m_in.busy) return -1;
1111 }
1112
1113 /* Copy mailbox data into host structure */
1114 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1115 sizeof(struct mbox_out));
1116
1117 mbox->m_out.cmdid = scb->idx; /* Set cmdid */
1118 mbox->m_in.busy = 1; /* Set busy */
1119
1120
1121 /*
1122 * Increment the pending queue counter
1123 */
1124 atomic_inc(&adapter->pend_cmds);
1125
1126 switch (mbox->m_out.cmd) {
1127 case MEGA_MBOXCMD_LREAD64:
1128 case MEGA_MBOXCMD_LWRITE64:
1129 case MEGA_MBOXCMD_PASSTHRU64:
1130 case MEGA_MBOXCMD_EXTPTHRU:
1131 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1132 mbox64->xfer_segment_hi = 0;
1133 mbox->m_out.xferaddr = 0xFFFFFFFF;
1134 break;
1135 default:
1136 mbox64->xfer_segment_lo = 0;
1137 mbox64->xfer_segment_hi = 0;
1138 }
1139
1140 /*
1141 * post the command
1142 */
1143 scb->state |= SCB_ISSUED;
1144
1145 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1146 mbox->m_in.poll = 0;
1147 mbox->m_in.ack = 0;
1148 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1149 }
1150 else {
1151 irq_enable(adapter);
1152 issue_command(adapter);
1153 }
1154
1155 return 0;
1156}
1157
1158/*
1159 * Wait until the controller's mailbox is available
1160 */
1161static inline int
1162mega_busywait_mbox (adapter_t *adapter)
1163{
1164 if (adapter->mbox->m_in.busy)
1165 return __mega_busywait_mbox(adapter);
1166 return 0;
1167}
1168
1169/**
1170 * issue_scb_block()
1171 * @adapter - pointer to our soft state
1172 * @raw_mbox - the mailbox
1173 *
1174 * Issue a scb in synchronous and non-interrupt mode
1175 */
1176static int
1177issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1178{
1179 volatile mbox64_t *mbox64 = adapter->mbox64;
1180 volatile mbox_t *mbox = adapter->mbox;
1181 u8 byte;
1182
1183 /* Wait until mailbox is free */
1184 if(mega_busywait_mbox (adapter))
1185 goto bug_blocked_mailbox;
1186
1187 /* Copy mailbox data into host structure */
1188 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1189 mbox->m_out.cmdid = 0xFE;
1190 mbox->m_in.busy = 1;
1191
1192 switch (raw_mbox[0]) {
1193 case MEGA_MBOXCMD_LREAD64:
1194 case MEGA_MBOXCMD_LWRITE64:
1195 case MEGA_MBOXCMD_PASSTHRU64:
1196 case MEGA_MBOXCMD_EXTPTHRU:
1197 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1198 mbox64->xfer_segment_hi = 0;
1199 mbox->m_out.xferaddr = 0xFFFFFFFF;
1200 break;
1201 default:
1202 mbox64->xfer_segment_lo = 0;
1203 mbox64->xfer_segment_hi = 0;
1204 }
1205
1206 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1207 mbox->m_in.poll = 0;
1208 mbox->m_in.ack = 0;
1209 mbox->m_in.numstatus = 0xFF;
1210 mbox->m_in.status = 0xFF;
1211 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1212
1213 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1214 cpu_relax();
1215
1216 mbox->m_in.numstatus = 0xFF;
1217
1218 while( (volatile u8)mbox->m_in.poll != 0x77 )
1219 cpu_relax();
1220
1221 mbox->m_in.poll = 0;
1222 mbox->m_in.ack = 0x77;
1223
1224 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1225
1226 while(RDINDOOR(adapter) & 0x2)
1227 cpu_relax();
1228 }
1229 else {
1230 irq_disable(adapter);
1231 issue_command(adapter);
1232
1233 while (!((byte = irq_state(adapter)) & INTR_VALID))
1234 cpu_relax();
1235
1236 set_irq_state(adapter, byte);
1237 irq_enable(adapter);
1238 irq_ack(adapter);
1239 }
1240
1241 return mbox->m_in.status;
1242
1243bug_blocked_mailbox:
1244 dev_warn(&adapter->dev->dev, "Blocked mailbox......!!\n");
1245 udelay (1000);
1246 return -1;
1247}
1248
1249
1250/**
1251 * megaraid_isr_iomapped()
1252 * @irq - irq
1253 * @devp - pointer to our soft state
1254 *
1255 * Interrupt service routine for io-mapped controllers.
1256 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1257 * and service the completed commands.
1258 */
1259static irqreturn_t
1260megaraid_isr_iomapped(int irq, void *devp)
1261{
1262 adapter_t *adapter = devp;
1263 unsigned long flags;
1264 u8 status;
1265 u8 nstatus;
1266 u8 completed[MAX_FIRMWARE_STATUS];
1267 u8 byte;
1268 int handled = 0;
1269
1270
1271 /*
1272 * loop till F/W has more commands for us to complete.
1273 */
1274 spin_lock_irqsave(&adapter->lock, flags);
1275
1276 do {
1277 /* Check if a valid interrupt is pending */
1278 byte = irq_state(adapter);
1279 if( (byte & VALID_INTR_BYTE) == 0 ) {
1280 /*
1281 * No more pending commands
1282 */
1283 goto out_unlock;
1284 }
1285 set_irq_state(adapter, byte);
1286
1287 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1288 == 0xFF)
1289 cpu_relax();
1290 adapter->mbox->m_in.numstatus = 0xFF;
1291
1292 status = adapter->mbox->m_in.status;
1293
1294 /*
1295 * decrement the pending queue counter
1296 */
1297 atomic_sub(nstatus, &adapter->pend_cmds);
1298
1299 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1300 nstatus);
1301
1302 /* Acknowledge interrupt */
1303 irq_ack(adapter);
1304
1305 mega_cmd_done(adapter, completed, nstatus, status);
1306
1307 mega_rundoneq(adapter);
1308
1309 handled = 1;
1310
1311 /* Loop through any pending requests */
1312 if(atomic_read(&adapter->quiescent) == 0) {
1313 mega_runpendq(adapter);
1314 }
1315
1316 } while(1);
1317
1318 out_unlock:
1319
1320 spin_unlock_irqrestore(&adapter->lock, flags);
1321
1322 return IRQ_RETVAL(handled);
1323}
1324
1325
1326/**
1327 * megaraid_isr_memmapped()
1328 * @irq - irq
1329 * @devp - pointer to our soft state
1330 *
1331 * Interrupt service routine for memory-mapped controllers.
1332 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1333 * and service the completed commands.
1334 */
1335static irqreturn_t
1336megaraid_isr_memmapped(int irq, void *devp)
1337{
1338 adapter_t *adapter = devp;
1339 unsigned long flags;
1340 u8 status;
1341 u32 dword = 0;
1342 u8 nstatus;
1343 u8 completed[MAX_FIRMWARE_STATUS];
1344 int handled = 0;
1345
1346
1347 /*
1348 * loop till F/W has more commands for us to complete.
1349 */
1350 spin_lock_irqsave(&adapter->lock, flags);
1351
1352 do {
1353 /* Check if a valid interrupt is pending */
1354 dword = RDOUTDOOR(adapter);
1355 if(dword != 0x10001234) {
1356 /*
1357 * No more pending commands
1358 */
1359 goto out_unlock;
1360 }
1361 WROUTDOOR(adapter, 0x10001234);
1362
1363 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1364 == 0xFF) {
1365 cpu_relax();
1366 }
1367 adapter->mbox->m_in.numstatus = 0xFF;
1368
1369 status = adapter->mbox->m_in.status;
1370
1371 /*
1372 * decrement the pending queue counter
1373 */
1374 atomic_sub(nstatus, &adapter->pend_cmds);
1375
1376 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1377 nstatus);
1378
1379 /* Acknowledge interrupt */
1380 WRINDOOR(adapter, 0x2);
1381
1382 handled = 1;
1383
1384 while( RDINDOOR(adapter) & 0x02 )
1385 cpu_relax();
1386
1387 mega_cmd_done(adapter, completed, nstatus, status);
1388
1389 mega_rundoneq(adapter);
1390
1391 /* Loop through any pending requests */
1392 if(atomic_read(&adapter->quiescent) == 0) {
1393 mega_runpendq(adapter);
1394 }
1395
1396 } while(1);
1397
1398 out_unlock:
1399
1400 spin_unlock_irqrestore(&adapter->lock, flags);
1401
1402 return IRQ_RETVAL(handled);
1403}
1404/**
1405 * mega_cmd_done()
1406 * @adapter - pointer to our soft state
1407 * @completed - array of ids of completed commands
1408 * @nstatus - number of completed commands
1409 * @status - status of the last command completed
1410 *
1411 * Complete the commands and call the scsi mid-layer callback hooks.
1412 */
1413static void
1414mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1415{
1416 mega_ext_passthru *epthru = NULL;
1417 struct scatterlist *sgl;
1418 Scsi_Cmnd *cmd = NULL;
1419 mega_passthru *pthru = NULL;
1420 mbox_t *mbox = NULL;
1421 u8 c;
1422 scb_t *scb;
1423 int islogical;
1424 int cmdid;
1425 int i;
1426
1427 /*
1428 * for all the commands completed, call the mid-layer callback routine
1429 * and free the scb.
1430 */
1431 for( i = 0; i < nstatus; i++ ) {
1432
1433 cmdid = completed[i];
1434
1435 /*
1436 * Only free SCBs for the commands coming down from the
1437 * mid-layer, not for which were issued internally
1438 *
1439 * For internal command, restore the status returned by the
1440 * firmware so that user can interpret it.
1441 */
1442 if (cmdid == CMDID_INT_CMDS) {
1443 scb = &adapter->int_scb;
1444
1445 list_del_init(&scb->list);
1446 scb->state = SCB_FREE;
1447
1448 adapter->int_status = status;
1449 complete(&adapter->int_waitq);
1450 } else {
1451 scb = &adapter->scb_list[cmdid];
1452
1453 /*
1454 * Make sure f/w has completed a valid command
1455 */
1456 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1457 dev_crit(&adapter->dev->dev, "invalid command "
1458 "Id %d, scb->state:%x, scsi cmd:%p\n",
1459 cmdid, scb->state, scb->cmd);
1460
1461 continue;
1462 }
1463
1464 /*
1465 * Was a abort issued for this command
1466 */
1467 if( scb->state & SCB_ABORT ) {
1468
1469 dev_warn(&adapter->dev->dev,
1470 "aborted cmd [%x] complete\n",
1471 scb->idx);
1472
1473 scb->cmd->result = (DID_ABORT << 16);
1474
1475 list_add_tail(SCSI_LIST(scb->cmd),
1476 &adapter->completed_list);
1477
1478 mega_free_scb(adapter, scb);
1479
1480 continue;
1481 }
1482
1483 /*
1484 * Was a reset issued for this command
1485 */
1486 if( scb->state & SCB_RESET ) {
1487
1488 dev_warn(&adapter->dev->dev,
1489 "reset cmd [%x] complete\n",
1490 scb->idx);
1491
1492 scb->cmd->result = (DID_RESET << 16);
1493
1494 list_add_tail(SCSI_LIST(scb->cmd),
1495 &adapter->completed_list);
1496
1497 mega_free_scb (adapter, scb);
1498
1499 continue;
1500 }
1501
1502 cmd = scb->cmd;
1503 pthru = scb->pthru;
1504 epthru = scb->epthru;
1505 mbox = (mbox_t *)scb->raw_mbox;
1506
1507#if MEGA_HAVE_STATS
1508 {
1509
1510 int logdrv = mbox->m_out.logdrv;
1511
1512 islogical = adapter->logdrv_chan[cmd->channel];
1513 /*
1514 * Maintain an error counter for the logical drive.
1515 * Some application like SNMP agent need such
1516 * statistics
1517 */
1518 if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1519 cmd->cmnd[0] == READ_10 ||
1520 cmd->cmnd[0] == READ_12)) {
1521 /*
1522 * Logical drive number increases by 0x80 when
1523 * a logical drive is deleted
1524 */
1525 adapter->rd_errors[logdrv%0x80]++;
1526 }
1527
1528 if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1529 cmd->cmnd[0] == WRITE_10 ||
1530 cmd->cmnd[0] == WRITE_12)) {
1531 /*
1532 * Logical drive number increases by 0x80 when
1533 * a logical drive is deleted
1534 */
1535 adapter->wr_errors[logdrv%0x80]++;
1536 }
1537
1538 }
1539#endif
1540 }
1541
1542 /*
1543 * Do not return the presence of hard disk on the channel so,
1544 * inquiry sent, and returned data==hard disk or removable
1545 * hard disk and not logical, request should return failure! -
1546 * PJ
1547 */
1548 islogical = adapter->logdrv_chan[cmd->device->channel];
1549 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1550
1551 sgl = scsi_sglist(cmd);
1552 if( sg_page(sgl) ) {
1553 c = *(unsigned char *) sg_virt(&sgl[0]);
1554 } else {
1555 dev_warn(&adapter->dev->dev, "invalid sg\n");
1556 c = 0;
1557 }
1558
1559 if(IS_RAID_CH(adapter, cmd->device->channel) &&
1560 ((c & 0x1F ) == TYPE_DISK)) {
1561 status = 0xF0;
1562 }
1563 }
1564
1565 /* clear result; otherwise, success returns corrupt value */
1566 cmd->result = 0;
1567
1568 /* Convert MegaRAID status to Linux error code */
1569 switch (status) {
1570 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1571 cmd->result |= (DID_OK << 16);
1572 break;
1573
1574 case 0x02: /* ERROR_ABORTED, i.e.
1575 SCSI_STATUS_CHECK_CONDITION */
1576
1577 /* set sense_buffer and result fields */
1578 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1579 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1580
1581 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1582 14);
1583
1584 cmd->result = (DRIVER_SENSE << 24) |
1585 (DID_OK << 16) |
1586 (CHECK_CONDITION << 1);
1587 }
1588 else {
1589 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1590
1591 memcpy(cmd->sense_buffer,
1592 epthru->reqsensearea, 14);
1593
1594 cmd->result = (DRIVER_SENSE << 24) |
1595 (DID_OK << 16) |
1596 (CHECK_CONDITION << 1);
1597 } else {
1598 cmd->sense_buffer[0] = 0x70;
1599 cmd->sense_buffer[2] = ABORTED_COMMAND;
1600 cmd->result |= (CHECK_CONDITION << 1);
1601 }
1602 }
1603 break;
1604
1605 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.
1606 SCSI_STATUS_BUSY */
1607 cmd->result |= (DID_BUS_BUSY << 16) | status;
1608 break;
1609
1610 default:
1611#if MEGA_HAVE_CLUSTERING
1612 /*
1613 * If TEST_UNIT_READY fails, we know
1614 * MEGA_RESERVATION_STATUS failed
1615 */
1616 if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1617 cmd->result |= (DID_ERROR << 16) |
1618 (RESERVATION_CONFLICT << 1);
1619 }
1620 else
1621 /*
1622 * Error code returned is 1 if Reserve or Release
1623 * failed or the input parameter is invalid
1624 */
1625 if( status == 1 &&
1626 (cmd->cmnd[0] == RESERVE ||
1627 cmd->cmnd[0] == RELEASE) ) {
1628
1629 cmd->result |= (DID_ERROR << 16) |
1630 (RESERVATION_CONFLICT << 1);
1631 }
1632 else
1633#endif
1634 cmd->result |= (DID_BAD_TARGET << 16)|status;
1635 }
1636
1637 mega_free_scb(adapter, scb);
1638
1639 /* Add Scsi_Command to end of completed queue */
1640 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1641 }
1642}
1643
1644
1645/*
1646 * mega_runpendq()
1647 *
1648 * Run through the list of completed requests and finish it
1649 */
1650static void
1651mega_rundoneq (adapter_t *adapter)
1652{
1653 Scsi_Cmnd *cmd;
1654 struct list_head *pos;
1655
1656 list_for_each(pos, &adapter->completed_list) {
1657
1658 struct scsi_pointer* spos = (struct scsi_pointer *)pos;
1659
1660 cmd = list_entry(spos, Scsi_Cmnd, SCp);
1661 cmd->scsi_done(cmd);
1662 }
1663
1664 INIT_LIST_HEAD(&adapter->completed_list);
1665}
1666
1667
1668/*
1669 * Free a SCB structure
1670 * Note: We assume the scsi commands associated with this scb is not free yet.
1671 */
1672static void
1673mega_free_scb(adapter_t *adapter, scb_t *scb)
1674{
1675 switch( scb->dma_type ) {
1676
1677 case MEGA_DMA_TYPE_NONE:
1678 break;
1679
1680 case MEGA_SGLIST:
1681 scsi_dma_unmap(scb->cmd);
1682 break;
1683 default:
1684 break;
1685 }
1686
1687 /*
1688 * Remove from the pending list
1689 */
1690 list_del_init(&scb->list);
1691
1692 /* Link the scb back into free list */
1693 scb->state = SCB_FREE;
1694 scb->cmd = NULL;
1695
1696 list_add(&scb->list, &adapter->free_list);
1697}
1698
1699
1700static int
1701__mega_busywait_mbox (adapter_t *adapter)
1702{
1703 volatile mbox_t *mbox = adapter->mbox;
1704 long counter;
1705
1706 for (counter = 0; counter < 10000; counter++) {
1707 if (!mbox->m_in.busy)
1708 return 0;
1709 udelay(100);
1710 cond_resched();
1711 }
1712 return -1; /* give up after 1 second */
1713}
1714
1715/*
1716 * Copies data to SGLIST
1717 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1718 */
1719static int
1720mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1721{
1722 struct scatterlist *sg;
1723 Scsi_Cmnd *cmd;
1724 int sgcnt;
1725 int idx;
1726
1727 cmd = scb->cmd;
1728
1729 /*
1730 * Copy Scatter-Gather list info into controller structure.
1731 *
1732 * The number of sg elements returned must not exceed our limit
1733 */
1734 sgcnt = scsi_dma_map(cmd);
1735
1736 scb->dma_type = MEGA_SGLIST;
1737
1738 BUG_ON(sgcnt > adapter->sglen || sgcnt < 0);
1739
1740 *len = 0;
1741
1742 if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) {
1743 sg = scsi_sglist(cmd);
1744 scb->dma_h_bulkdata = sg_dma_address(sg);
1745 *buf = (u32)scb->dma_h_bulkdata;
1746 *len = sg_dma_len(sg);
1747 return 0;
1748 }
1749
1750 scsi_for_each_sg(cmd, sg, sgcnt, idx) {
1751 if (adapter->has_64bit_addr) {
1752 scb->sgl64[idx].address = sg_dma_address(sg);
1753 *len += scb->sgl64[idx].length = sg_dma_len(sg);
1754 } else {
1755 scb->sgl[idx].address = sg_dma_address(sg);
1756 *len += scb->sgl[idx].length = sg_dma_len(sg);
1757 }
1758 }
1759
1760 /* Reset pointer and length fields */
1761 *buf = scb->sgl_dma_addr;
1762
1763 /* Return count of SG requests */
1764 return sgcnt;
1765}
1766
1767
1768/*
1769 * mega_8_to_40ld()
1770 *
1771 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1772 * Enquiry3 structures for later use
1773 */
1774static void
1775mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1776 mega_product_info *product_info)
1777{
1778 int i;
1779
1780 product_info->max_commands = inquiry->adapter_info.max_commands;
1781 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1782 product_info->nchannels = inquiry->adapter_info.nchannels;
1783
1784 for (i = 0; i < 4; i++) {
1785 product_info->fw_version[i] =
1786 inquiry->adapter_info.fw_version[i];
1787
1788 product_info->bios_version[i] =
1789 inquiry->adapter_info.bios_version[i];
1790 }
1791 enquiry3->cache_flush_interval =
1792 inquiry->adapter_info.cache_flush_interval;
1793
1794 product_info->dram_size = inquiry->adapter_info.dram_size;
1795
1796 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1797
1798 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1799 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1800 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1801 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1802 }
1803
1804 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1805 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1806}
1807
1808static inline void
1809mega_free_sgl(adapter_t *adapter)
1810{
1811 scb_t *scb;
1812 int i;
1813
1814 for(i = 0; i < adapter->max_cmds; i++) {
1815
1816 scb = &adapter->scb_list[i];
1817
1818 if( scb->sgl64 ) {
1819 pci_free_consistent(adapter->dev,
1820 sizeof(mega_sgl64) * adapter->sglen,
1821 scb->sgl64,
1822 scb->sgl_dma_addr);
1823
1824 scb->sgl64 = NULL;
1825 }
1826
1827 if( scb->pthru ) {
1828 pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1829 scb->pthru, scb->pthru_dma_addr);
1830
1831 scb->pthru = NULL;
1832 }
1833
1834 if( scb->epthru ) {
1835 pci_free_consistent(adapter->dev,
1836 sizeof(mega_ext_passthru),
1837 scb->epthru, scb->epthru_dma_addr);
1838
1839 scb->epthru = NULL;
1840 }
1841
1842 }
1843}
1844
1845
1846/*
1847 * Get information about the card/driver
1848 */
1849const char *
1850megaraid_info(struct Scsi_Host *host)
1851{
1852 static char buffer[512];
1853 adapter_t *adapter;
1854
1855 adapter = (adapter_t *)host->hostdata;
1856
1857 sprintf (buffer,
1858 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1859 adapter->fw_version, adapter->product_info.max_commands,
1860 adapter->host->max_id, adapter->host->max_channel,
1861 (u32)adapter->host->max_lun);
1862 return buffer;
1863}
1864
1865/*
1866 * Abort a previous SCSI request. Only commands on the pending list can be
1867 * aborted. All the commands issued to the F/W must complete.
1868 */
1869static int
1870megaraid_abort(Scsi_Cmnd *cmd)
1871{
1872 adapter_t *adapter;
1873 int rval;
1874
1875 adapter = (adapter_t *)cmd->device->host->hostdata;
1876
1877 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1878
1879 /*
1880 * This is required here to complete any completed requests
1881 * to be communicated over to the mid layer.
1882 */
1883 mega_rundoneq(adapter);
1884
1885 return rval;
1886}
1887
1888
1889static int
1890megaraid_reset(struct scsi_cmnd *cmd)
1891{
1892 adapter_t *adapter;
1893 megacmd_t mc;
1894 int rval;
1895
1896 adapter = (adapter_t *)cmd->device->host->hostdata;
1897
1898#if MEGA_HAVE_CLUSTERING
1899 mc.cmd = MEGA_CLUSTER_CMD;
1900 mc.opcode = MEGA_RESET_RESERVATIONS;
1901
1902 if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1903 dev_warn(&adapter->dev->dev, "reservation reset failed\n");
1904 }
1905 else {
1906 dev_info(&adapter->dev->dev, "reservation reset\n");
1907 }
1908#endif
1909
1910 spin_lock_irq(&adapter->lock);
1911
1912 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
1913
1914 /*
1915 * This is required here to complete any completed requests
1916 * to be communicated over to the mid layer.
1917 */
1918 mega_rundoneq(adapter);
1919 spin_unlock_irq(&adapter->lock);
1920
1921 return rval;
1922}
1923
1924/**
1925 * megaraid_abort_and_reset()
1926 * @adapter - megaraid soft state
1927 * @cmd - scsi command to be aborted or reset
1928 * @aor - abort or reset flag
1929 *
1930 * Try to locate the scsi command in the pending queue. If found and is not
1931 * issued to the controller, abort/reset it. Otherwise return failure
1932 */
1933static int
1934megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
1935{
1936 struct list_head *pos, *next;
1937 scb_t *scb;
1938
1939 dev_warn(&adapter->dev->dev, "%s cmd=%x <c=%d t=%d l=%d>\n",
1940 (aor == SCB_ABORT)? "ABORTING":"RESET",
1941 cmd->cmnd[0], cmd->device->channel,
1942 cmd->device->id, (u32)cmd->device->lun);
1943
1944 if(list_empty(&adapter->pending_list))
1945 return FAILED;
1946
1947 list_for_each_safe(pos, next, &adapter->pending_list) {
1948
1949 scb = list_entry(pos, scb_t, list);
1950
1951 if (scb->cmd == cmd) { /* Found command */
1952
1953 scb->state |= aor;
1954
1955 /*
1956 * Check if this command has firmware ownership. If
1957 * yes, we cannot reset this command. Whenever f/w
1958 * completes this command, we will return appropriate
1959 * status from ISR.
1960 */
1961 if( scb->state & SCB_ISSUED ) {
1962
1963 dev_warn(&adapter->dev->dev,
1964 "%s[%x], fw owner\n",
1965 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1966 scb->idx);
1967
1968 return FAILED;
1969 }
1970 else {
1971
1972 /*
1973 * Not yet issued! Remove from the pending
1974 * list
1975 */
1976 dev_warn(&adapter->dev->dev,
1977 "%s-[%x], driver owner\n",
1978 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1979 scb->idx);
1980
1981 mega_free_scb(adapter, scb);
1982
1983 if( aor == SCB_ABORT ) {
1984 cmd->result = (DID_ABORT << 16);
1985 }
1986 else {
1987 cmd->result = (DID_RESET << 16);
1988 }
1989
1990 list_add_tail(SCSI_LIST(cmd),
1991 &adapter->completed_list);
1992
1993 return SUCCESS;
1994 }
1995 }
1996 }
1997
1998 return FAILED;
1999}
2000
2001static inline int
2002make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2003{
2004 *pdev = pci_alloc_dev(NULL);
2005
2006 if( *pdev == NULL ) return -1;
2007
2008 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2009
2010 if( pci_set_dma_mask(*pdev, DMA_BIT_MASK(32)) != 0 ) {
2011 kfree(*pdev);
2012 return -1;
2013 }
2014
2015 return 0;
2016}
2017
2018static inline void
2019free_local_pdev(struct pci_dev *pdev)
2020{
2021 kfree(pdev);
2022}
2023
2024/**
2025 * mega_allocate_inquiry()
2026 * @dma_handle - handle returned for dma address
2027 * @pdev - handle to pci device
2028 *
2029 * allocates memory for inquiry structure
2030 */
2031static inline void *
2032mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2033{
2034 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2035}
2036
2037
2038static inline void
2039mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2040{
2041 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2042}
2043
2044
2045#ifdef CONFIG_PROC_FS
2046/* Following code handles /proc fs */
2047
2048/**
2049 * proc_show_config()
2050 * @m - Synthetic file construction data
2051 * @v - File iterator
2052 *
2053 * Display configuration information about the controller.
2054 */
2055static int
2056proc_show_config(struct seq_file *m, void *v)
2057{
2058
2059 adapter_t *adapter = m->private;
2060
2061 seq_puts(m, MEGARAID_VERSION);
2062 if(adapter->product_info.product_name[0])
2063 seq_printf(m, "%s\n", adapter->product_info.product_name);
2064
2065 seq_puts(m, "Controller Type: ");
2066
2067 if( adapter->flag & BOARD_MEMMAP )
2068 seq_puts(m, "438/466/467/471/493/518/520/531/532\n");
2069 else
2070 seq_puts(m, "418/428/434\n");
2071
2072 if(adapter->flag & BOARD_40LD)
2073 seq_puts(m, "Controller Supports 40 Logical Drives\n");
2074
2075 if(adapter->flag & BOARD_64BIT)
2076 seq_puts(m, "Controller capable of 64-bit memory addressing\n");
2077 if( adapter->has_64bit_addr )
2078 seq_puts(m, "Controller using 64-bit memory addressing\n");
2079 else
2080 seq_puts(m, "Controller is not using 64-bit memory addressing\n");
2081
2082 seq_printf(m, "Base = %08lx, Irq = %d, ",
2083 adapter->base, adapter->host->irq);
2084
2085 seq_printf(m, "Logical Drives = %d, Channels = %d\n",
2086 adapter->numldrv, adapter->product_info.nchannels);
2087
2088 seq_printf(m, "Version =%s:%s, DRAM = %dMb\n",
2089 adapter->fw_version, adapter->bios_version,
2090 adapter->product_info.dram_size);
2091
2092 seq_printf(m, "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2093 adapter->product_info.max_commands, adapter->max_cmds);
2094
2095 seq_printf(m, "support_ext_cdb = %d\n", adapter->support_ext_cdb);
2096 seq_printf(m, "support_random_del = %d\n", adapter->support_random_del);
2097 seq_printf(m, "boot_ldrv_enabled = %d\n", adapter->boot_ldrv_enabled);
2098 seq_printf(m, "boot_ldrv = %d\n", adapter->boot_ldrv);
2099 seq_printf(m, "boot_pdrv_enabled = %d\n", adapter->boot_pdrv_enabled);
2100 seq_printf(m, "boot_pdrv_ch = %d\n", adapter->boot_pdrv_ch);
2101 seq_printf(m, "boot_pdrv_tgt = %d\n", adapter->boot_pdrv_tgt);
2102 seq_printf(m, "quiescent = %d\n",
2103 atomic_read(&adapter->quiescent));
2104 seq_printf(m, "has_cluster = %d\n", adapter->has_cluster);
2105
2106 seq_puts(m, "\nModule Parameters:\n");
2107 seq_printf(m, "max_cmd_per_lun = %d\n", max_cmd_per_lun);
2108 seq_printf(m, "max_sectors_per_io = %d\n", max_sectors_per_io);
2109 return 0;
2110}
2111
2112/**
2113 * proc_show_stat()
2114 * @m - Synthetic file construction data
2115 * @v - File iterator
2116 *
2117 * Display statistical information about the I/O activity.
2118 */
2119static int
2120proc_show_stat(struct seq_file *m, void *v)
2121{
2122 adapter_t *adapter = m->private;
2123#if MEGA_HAVE_STATS
2124 int i;
2125#endif
2126
2127 seq_puts(m, "Statistical Information for this controller\n");
2128 seq_printf(m, "pend_cmds = %d\n", atomic_read(&adapter->pend_cmds));
2129#if MEGA_HAVE_STATS
2130 for(i = 0; i < adapter->numldrv; i++) {
2131 seq_printf(m, "Logical Drive %d:\n", i);
2132 seq_printf(m, "\tReads Issued = %lu, Writes Issued = %lu\n",
2133 adapter->nreads[i], adapter->nwrites[i]);
2134 seq_printf(m, "\tSectors Read = %lu, Sectors Written = %lu\n",
2135 adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2136 seq_printf(m, "\tRead errors = %lu, Write errors = %lu\n\n",
2137 adapter->rd_errors[i], adapter->wr_errors[i]);
2138 }
2139#else
2140 seq_puts(m, "IO and error counters not compiled in driver.\n");
2141#endif
2142 return 0;
2143}
2144
2145
2146/**
2147 * proc_show_mbox()
2148 * @m - Synthetic file construction data
2149 * @v - File iterator
2150 *
2151 * Display mailbox information for the last command issued. This information
2152 * is good for debugging.
2153 */
2154static int
2155proc_show_mbox(struct seq_file *m, void *v)
2156{
2157 adapter_t *adapter = m->private;
2158 volatile mbox_t *mbox = adapter->mbox;
2159
2160 seq_puts(m, "Contents of Mail Box Structure\n");
2161 seq_printf(m, " Fw Command = 0x%02x\n", mbox->m_out.cmd);
2162 seq_printf(m, " Cmd Sequence = 0x%02x\n", mbox->m_out.cmdid);
2163 seq_printf(m, " No of Sectors= %04d\n", mbox->m_out.numsectors);
2164 seq_printf(m, " LBA = 0x%02x\n", mbox->m_out.lba);
2165 seq_printf(m, " DTA = 0x%08x\n", mbox->m_out.xferaddr);
2166 seq_printf(m, " Logical Drive= 0x%02x\n", mbox->m_out.logdrv);
2167 seq_printf(m, " No of SG Elmt= 0x%02x\n", mbox->m_out.numsgelements);
2168 seq_printf(m, " Busy = %01x\n", mbox->m_in.busy);
2169 seq_printf(m, " Status = 0x%02x\n", mbox->m_in.status);
2170 return 0;
2171}
2172
2173
2174/**
2175 * proc_show_rebuild_rate()
2176 * @m - Synthetic file construction data
2177 * @v - File iterator
2178 *
2179 * Display current rebuild rate
2180 */
2181static int
2182proc_show_rebuild_rate(struct seq_file *m, void *v)
2183{
2184 adapter_t *adapter = m->private;
2185 dma_addr_t dma_handle;
2186 caddr_t inquiry;
2187 struct pci_dev *pdev;
2188
2189 if( make_local_pdev(adapter, &pdev) != 0 )
2190 return 0;
2191
2192 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2193 goto free_pdev;
2194
2195 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2196 seq_puts(m, "Adapter inquiry failed.\n");
2197 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2198 goto free_inquiry;
2199 }
2200
2201 if( adapter->flag & BOARD_40LD )
2202 seq_printf(m, "Rebuild Rate: [%d%%]\n",
2203 ((mega_inquiry3 *)inquiry)->rebuild_rate);
2204 else
2205 seq_printf(m, "Rebuild Rate: [%d%%]\n",
2206 ((mraid_ext_inquiry *)
2207 inquiry)->raid_inq.adapter_info.rebuild_rate);
2208
2209free_inquiry:
2210 mega_free_inquiry(inquiry, dma_handle, pdev);
2211free_pdev:
2212 free_local_pdev(pdev);
2213 return 0;
2214}
2215
2216
2217/**
2218 * proc_show_battery()
2219 * @m - Synthetic file construction data
2220 * @v - File iterator
2221 *
2222 * Display information about the battery module on the controller.
2223 */
2224static int
2225proc_show_battery(struct seq_file *m, void *v)
2226{
2227 adapter_t *adapter = m->private;
2228 dma_addr_t dma_handle;
2229 caddr_t inquiry;
2230 struct pci_dev *pdev;
2231 u8 battery_status;
2232
2233 if( make_local_pdev(adapter, &pdev) != 0 )
2234 return 0;
2235
2236 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2237 goto free_pdev;
2238
2239 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2240 seq_puts(m, "Adapter inquiry failed.\n");
2241 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2242 goto free_inquiry;
2243 }
2244
2245 if( adapter->flag & BOARD_40LD ) {
2246 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2247 }
2248 else {
2249 battery_status = ((mraid_ext_inquiry *)inquiry)->
2250 raid_inq.adapter_info.battery_status;
2251 }
2252
2253 /*
2254 * Decode the battery status
2255 */
2256 seq_printf(m, "Battery Status:[%d]", battery_status);
2257
2258 if(battery_status == MEGA_BATT_CHARGE_DONE)
2259 seq_puts(m, " Charge Done");
2260
2261 if(battery_status & MEGA_BATT_MODULE_MISSING)
2262 seq_puts(m, " Module Missing");
2263
2264 if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2265 seq_puts(m, " Low Voltage");
2266
2267 if(battery_status & MEGA_BATT_TEMP_HIGH)
2268 seq_puts(m, " Temperature High");
2269
2270 if(battery_status & MEGA_BATT_PACK_MISSING)
2271 seq_puts(m, " Pack Missing");
2272
2273 if(battery_status & MEGA_BATT_CHARGE_INPROG)
2274 seq_puts(m, " Charge In-progress");
2275
2276 if(battery_status & MEGA_BATT_CHARGE_FAIL)
2277 seq_puts(m, " Charge Fail");
2278
2279 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2280 seq_puts(m, " Cycles Exceeded");
2281
2282 seq_putc(m, '\n');
2283
2284free_inquiry:
2285 mega_free_inquiry(inquiry, dma_handle, pdev);
2286free_pdev:
2287 free_local_pdev(pdev);
2288 return 0;
2289}
2290
2291
2292/*
2293 * Display scsi inquiry
2294 */
2295static void
2296mega_print_inquiry(struct seq_file *m, char *scsi_inq)
2297{
2298 int i;
2299
2300 seq_puts(m, " Vendor: ");
2301 seq_write(m, scsi_inq + 8, 8);
2302 seq_puts(m, " Model: ");
2303 seq_write(m, scsi_inq + 16, 16);
2304 seq_puts(m, " Rev: ");
2305 seq_write(m, scsi_inq + 32, 4);
2306 seq_putc(m, '\n');
2307
2308 i = scsi_inq[0] & 0x1f;
2309 seq_printf(m, " Type: %s ", scsi_device_type(i));
2310
2311 seq_printf(m, " ANSI SCSI revision: %02x",
2312 scsi_inq[2] & 0x07);
2313
2314 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2315 seq_puts(m, " CCS\n");
2316 else
2317 seq_putc(m, '\n');
2318}
2319
2320/**
2321 * proc_show_pdrv()
2322 * @m - Synthetic file construction data
2323 * @page - buffer to write the data in
2324 * @adapter - pointer to our soft state
2325 *
2326 * Display information about the physical drives.
2327 */
2328static int
2329proc_show_pdrv(struct seq_file *m, adapter_t *adapter, int channel)
2330{
2331 dma_addr_t dma_handle;
2332 char *scsi_inq;
2333 dma_addr_t scsi_inq_dma_handle;
2334 caddr_t inquiry;
2335 struct pci_dev *pdev;
2336 u8 *pdrv_state;
2337 u8 state;
2338 int tgt;
2339 int max_channels;
2340 int i;
2341
2342 if( make_local_pdev(adapter, &pdev) != 0 )
2343 return 0;
2344
2345 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2346 goto free_pdev;
2347
2348 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2349 seq_puts(m, "Adapter inquiry failed.\n");
2350 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2351 goto free_inquiry;
2352 }
2353
2354
2355 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2356 if( scsi_inq == NULL ) {
2357 seq_puts(m, "memory not available for scsi inq.\n");
2358 goto free_inquiry;
2359 }
2360
2361 if( adapter->flag & BOARD_40LD ) {
2362 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2363 }
2364 else {
2365 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2366 raid_inq.pdrv_info.pdrv_state;
2367 }
2368
2369 max_channels = adapter->product_info.nchannels;
2370
2371 if( channel >= max_channels ) {
2372 goto free_pci;
2373 }
2374
2375 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2376
2377 i = channel*16 + tgt;
2378
2379 state = *(pdrv_state + i);
2380 switch( state & 0x0F ) {
2381 case PDRV_ONLINE:
2382 seq_printf(m, "Channel:%2d Id:%2d State: Online",
2383 channel, tgt);
2384 break;
2385
2386 case PDRV_FAILED:
2387 seq_printf(m, "Channel:%2d Id:%2d State: Failed",
2388 channel, tgt);
2389 break;
2390
2391 case PDRV_RBLD:
2392 seq_printf(m, "Channel:%2d Id:%2d State: Rebuild",
2393 channel, tgt);
2394 break;
2395
2396 case PDRV_HOTSPARE:
2397 seq_printf(m, "Channel:%2d Id:%2d State: Hot spare",
2398 channel, tgt);
2399 break;
2400
2401 default:
2402 seq_printf(m, "Channel:%2d Id:%2d State: Un-configured",
2403 channel, tgt);
2404 break;
2405 }
2406
2407 /*
2408 * This interface displays inquiries for disk drives
2409 * only. Inquries for logical drives and non-disk
2410 * devices are available through /proc/scsi/scsi
2411 */
2412 memset(scsi_inq, 0, 256);
2413 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2414 scsi_inq_dma_handle) ||
2415 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2416 continue;
2417 }
2418
2419 /*
2420 * Check for overflow. We print less than 240
2421 * characters for inquiry
2422 */
2423 seq_puts(m, ".\n");
2424 mega_print_inquiry(m, scsi_inq);
2425 }
2426
2427free_pci:
2428 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2429free_inquiry:
2430 mega_free_inquiry(inquiry, dma_handle, pdev);
2431free_pdev:
2432 free_local_pdev(pdev);
2433 return 0;
2434}
2435
2436/**
2437 * proc_show_pdrv_ch0()
2438 * @m - Synthetic file construction data
2439 * @v - File iterator
2440 *
2441 * Display information about the physical drives on physical channel 0.
2442 */
2443static int
2444proc_show_pdrv_ch0(struct seq_file *m, void *v)
2445{
2446 return proc_show_pdrv(m, m->private, 0);
2447}
2448
2449
2450/**
2451 * proc_show_pdrv_ch1()
2452 * @m - Synthetic file construction data
2453 * @v - File iterator
2454 *
2455 * Display information about the physical drives on physical channel 1.
2456 */
2457static int
2458proc_show_pdrv_ch1(struct seq_file *m, void *v)
2459{
2460 return proc_show_pdrv(m, m->private, 1);
2461}
2462
2463
2464/**
2465 * proc_show_pdrv_ch2()
2466 * @m - Synthetic file construction data
2467 * @v - File iterator
2468 *
2469 * Display information about the physical drives on physical channel 2.
2470 */
2471static int
2472proc_show_pdrv_ch2(struct seq_file *m, void *v)
2473{
2474 return proc_show_pdrv(m, m->private, 2);
2475}
2476
2477
2478/**
2479 * proc_show_pdrv_ch3()
2480 * @m - Synthetic file construction data
2481 * @v - File iterator
2482 *
2483 * Display information about the physical drives on physical channel 3.
2484 */
2485static int
2486proc_show_pdrv_ch3(struct seq_file *m, void *v)
2487{
2488 return proc_show_pdrv(m, m->private, 3);
2489}
2490
2491
2492/**
2493 * proc_show_rdrv()
2494 * @m - Synthetic file construction data
2495 * @adapter - pointer to our soft state
2496 * @start - starting logical drive to display
2497 * @end - ending logical drive to display
2498 *
2499 * We do not print the inquiry information since its already available through
2500 * /proc/scsi/scsi interface
2501 */
2502static int
2503proc_show_rdrv(struct seq_file *m, adapter_t *adapter, int start, int end )
2504{
2505 dma_addr_t dma_handle;
2506 logdrv_param *lparam;
2507 megacmd_t mc;
2508 char *disk_array;
2509 dma_addr_t disk_array_dma_handle;
2510 caddr_t inquiry;
2511 struct pci_dev *pdev;
2512 u8 *rdrv_state;
2513 int num_ldrv;
2514 u32 array_sz;
2515 int i;
2516
2517 if( make_local_pdev(adapter, &pdev) != 0 )
2518 return 0;
2519
2520 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2521 goto free_pdev;
2522
2523 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2524 seq_puts(m, "Adapter inquiry failed.\n");
2525 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2526 goto free_inquiry;
2527 }
2528
2529 memset(&mc, 0, sizeof(megacmd_t));
2530
2531 if( adapter->flag & BOARD_40LD ) {
2532 array_sz = sizeof(disk_array_40ld);
2533
2534 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2535
2536 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2537 }
2538 else {
2539 array_sz = sizeof(disk_array_8ld);
2540
2541 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2542 raid_inq.logdrv_info.ldrv_state;
2543
2544 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2545 raid_inq.logdrv_info.num_ldrv;
2546 }
2547
2548 disk_array = pci_alloc_consistent(pdev, array_sz,
2549 &disk_array_dma_handle);
2550
2551 if( disk_array == NULL ) {
2552 seq_puts(m, "memory not available.\n");
2553 goto free_inquiry;
2554 }
2555
2556 mc.xferaddr = (u32)disk_array_dma_handle;
2557
2558 if( adapter->flag & BOARD_40LD ) {
2559 mc.cmd = FC_NEW_CONFIG;
2560 mc.opcode = OP_DCMD_READ_CONFIG;
2561
2562 if( mega_internal_command(adapter, &mc, NULL) ) {
2563 seq_puts(m, "40LD read config failed.\n");
2564 goto free_pci;
2565 }
2566
2567 }
2568 else {
2569 mc.cmd = NEW_READ_CONFIG_8LD;
2570
2571 if( mega_internal_command(adapter, &mc, NULL) ) {
2572 mc.cmd = READ_CONFIG_8LD;
2573 if( mega_internal_command(adapter, &mc, NULL) ) {
2574 seq_puts(m, "8LD read config failed.\n");
2575 goto free_pci;
2576 }
2577 }
2578 }
2579
2580 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
2581
2582 if( adapter->flag & BOARD_40LD ) {
2583 lparam =
2584 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
2585 }
2586 else {
2587 lparam =
2588 &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
2589 }
2590
2591 /*
2592 * Check for overflow. We print less than 240 characters for
2593 * information about each logical drive.
2594 */
2595 seq_printf(m, "Logical drive:%2d:, ", i);
2596
2597 switch( rdrv_state[i] & 0x0F ) {
2598 case RDRV_OFFLINE:
2599 seq_puts(m, "state: offline");
2600 break;
2601 case RDRV_DEGRADED:
2602 seq_puts(m, "state: degraded");
2603 break;
2604 case RDRV_OPTIMAL:
2605 seq_puts(m, "state: optimal");
2606 break;
2607 case RDRV_DELETED:
2608 seq_puts(m, "state: deleted");
2609 break;
2610 default:
2611 seq_puts(m, "state: unknown");
2612 break;
2613 }
2614
2615 /*
2616 * Check if check consistency or initialization is going on
2617 * for this logical drive.
2618 */
2619 if( (rdrv_state[i] & 0xF0) == 0x20 )
2620 seq_puts(m, ", check-consistency in progress");
2621 else if( (rdrv_state[i] & 0xF0) == 0x10 )
2622 seq_puts(m, ", initialization in progress");
2623
2624 seq_putc(m, '\n');
2625
2626 seq_printf(m, "Span depth:%3d, ", lparam->span_depth);
2627 seq_printf(m, "RAID level:%3d, ", lparam->level);
2628 seq_printf(m, "Stripe size:%3d, ",
2629 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
2630 seq_printf(m, "Row size:%3d\n", lparam->row_size);
2631
2632 seq_puts(m, "Read Policy: ");
2633 switch(lparam->read_ahead) {
2634 case NO_READ_AHEAD:
2635 seq_puts(m, "No read ahead, ");
2636 break;
2637 case READ_AHEAD:
2638 seq_puts(m, "Read ahead, ");
2639 break;
2640 case ADAP_READ_AHEAD:
2641 seq_puts(m, "Adaptive, ");
2642 break;
2643
2644 }
2645
2646 seq_puts(m, "Write Policy: ");
2647 switch(lparam->write_mode) {
2648 case WRMODE_WRITE_THRU:
2649 seq_puts(m, "Write thru, ");
2650 break;
2651 case WRMODE_WRITE_BACK:
2652 seq_puts(m, "Write back, ");
2653 break;
2654 }
2655
2656 seq_puts(m, "Cache Policy: ");
2657 switch(lparam->direct_io) {
2658 case CACHED_IO:
2659 seq_puts(m, "Cached IO\n\n");
2660 break;
2661 case DIRECT_IO:
2662 seq_puts(m, "Direct IO\n\n");
2663 break;
2664 }
2665 }
2666
2667free_pci:
2668 pci_free_consistent(pdev, array_sz, disk_array,
2669 disk_array_dma_handle);
2670free_inquiry:
2671 mega_free_inquiry(inquiry, dma_handle, pdev);
2672free_pdev:
2673 free_local_pdev(pdev);
2674 return 0;
2675}
2676
2677/**
2678 * proc_show_rdrv_10()
2679 * @m - Synthetic file construction data
2680 * @v - File iterator
2681 *
2682 * Display real time information about the logical drives 0 through 9.
2683 */
2684static int
2685proc_show_rdrv_10(struct seq_file *m, void *v)
2686{
2687 return proc_show_rdrv(m, m->private, 0, 9);
2688}
2689
2690
2691/**
2692 * proc_show_rdrv_20()
2693 * @m - Synthetic file construction data
2694 * @v - File iterator
2695 *
2696 * Display real time information about the logical drives 0 through 9.
2697 */
2698static int
2699proc_show_rdrv_20(struct seq_file *m, void *v)
2700{
2701 return proc_show_rdrv(m, m->private, 10, 19);
2702}
2703
2704
2705/**
2706 * proc_show_rdrv_30()
2707 * @m - Synthetic file construction data
2708 * @v - File iterator
2709 *
2710 * Display real time information about the logical drives 0 through 9.
2711 */
2712static int
2713proc_show_rdrv_30(struct seq_file *m, void *v)
2714{
2715 return proc_show_rdrv(m, m->private, 20, 29);
2716}
2717
2718
2719/**
2720 * proc_show_rdrv_40()
2721 * @m - Synthetic file construction data
2722 * @v - File iterator
2723 *
2724 * Display real time information about the logical drives 0 through 9.
2725 */
2726static int
2727proc_show_rdrv_40(struct seq_file *m, void *v)
2728{
2729 return proc_show_rdrv(m, m->private, 30, 39);
2730}
2731
2732
2733/*
2734 * seq_file wrappers for procfile show routines.
2735 */
2736static int mega_proc_open(struct inode *inode, struct file *file)
2737{
2738 adapter_t *adapter = proc_get_parent_data(inode);
2739 int (*show)(struct seq_file *, void *) = PDE_DATA(inode);
2740
2741 return single_open(file, show, adapter);
2742}
2743
2744static const struct file_operations mega_proc_fops = {
2745 .open = mega_proc_open,
2746 .read = seq_read,
2747 .llseek = seq_lseek,
2748 .release = single_release,
2749};
2750
2751/*
2752 * Table of proc files we need to create.
2753 */
2754struct mega_proc_file {
2755 const char *name;
2756 unsigned short ptr_offset;
2757 int (*show) (struct seq_file *m, void *v);
2758};
2759
2760static const struct mega_proc_file mega_proc_files[] = {
2761 { "config", offsetof(adapter_t, proc_read), proc_show_config },
2762 { "stat", offsetof(adapter_t, proc_stat), proc_show_stat },
2763 { "mailbox", offsetof(adapter_t, proc_mbox), proc_show_mbox },
2764#if MEGA_HAVE_ENH_PROC
2765 { "rebuild-rate", offsetof(adapter_t, proc_rr), proc_show_rebuild_rate },
2766 { "battery-status", offsetof(adapter_t, proc_battery), proc_show_battery },
2767 { "diskdrives-ch0", offsetof(adapter_t, proc_pdrvstat[0]), proc_show_pdrv_ch0 },
2768 { "diskdrives-ch1", offsetof(adapter_t, proc_pdrvstat[1]), proc_show_pdrv_ch1 },
2769 { "diskdrives-ch2", offsetof(adapter_t, proc_pdrvstat[2]), proc_show_pdrv_ch2 },
2770 { "diskdrives-ch3", offsetof(adapter_t, proc_pdrvstat[3]), proc_show_pdrv_ch3 },
2771 { "raiddrives-0-9", offsetof(adapter_t, proc_rdrvstat[0]), proc_show_rdrv_10 },
2772 { "raiddrives-10-19", offsetof(adapter_t, proc_rdrvstat[1]), proc_show_rdrv_20 },
2773 { "raiddrives-20-29", offsetof(adapter_t, proc_rdrvstat[2]), proc_show_rdrv_30 },
2774 { "raiddrives-30-39", offsetof(adapter_t, proc_rdrvstat[3]), proc_show_rdrv_40 },
2775#endif
2776 { NULL }
2777};
2778
2779/**
2780 * mega_create_proc_entry()
2781 * @index - index in soft state array
2782 * @parent - parent node for this /proc entry
2783 *
2784 * Creates /proc entries for our controllers.
2785 */
2786static void
2787mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2788{
2789 const struct mega_proc_file *f;
2790 adapter_t *adapter = hba_soft_state[index];
2791 struct proc_dir_entry *dir, *de, **ppde;
2792 u8 string[16];
2793
2794 sprintf(string, "hba%d", adapter->host->host_no);
2795
2796 dir = adapter->controller_proc_dir_entry =
2797 proc_mkdir_data(string, 0, parent, adapter);
2798 if(!dir) {
2799 dev_warn(&adapter->dev->dev, "proc_mkdir failed\n");
2800 return;
2801 }
2802
2803 for (f = mega_proc_files; f->name; f++) {
2804 de = proc_create_data(f->name, S_IRUSR, dir, &mega_proc_fops,
2805 f->show);
2806 if (!de) {
2807 dev_warn(&adapter->dev->dev, "proc_create failed\n");
2808 return;
2809 }
2810
2811 ppde = (void *)adapter + f->ptr_offset;
2812 *ppde = de;
2813 }
2814}
2815
2816#else
2817static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2818{
2819}
2820#endif
2821
2822
2823/**
2824 * megaraid_biosparam()
2825 *
2826 * Return the disk geometry for a particular disk
2827 */
2828static int
2829megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
2830 sector_t capacity, int geom[])
2831{
2832 adapter_t *adapter;
2833 unsigned char *bh;
2834 int heads;
2835 int sectors;
2836 int cylinders;
2837 int rval;
2838
2839 /* Get pointer to host config structure */
2840 adapter = (adapter_t *)sdev->host->hostdata;
2841
2842 if (IS_RAID_CH(adapter, sdev->channel)) {
2843 /* Default heads (64) & sectors (32) */
2844 heads = 64;
2845 sectors = 32;
2846 cylinders = (ulong)capacity / (heads * sectors);
2847
2848 /*
2849 * Handle extended translation size for logical drives
2850 * > 1Gb
2851 */
2852 if ((ulong)capacity >= 0x200000) {
2853 heads = 255;
2854 sectors = 63;
2855 cylinders = (ulong)capacity / (heads * sectors);
2856 }
2857
2858 /* return result */
2859 geom[0] = heads;
2860 geom[1] = sectors;
2861 geom[2] = cylinders;
2862 }
2863 else {
2864 bh = scsi_bios_ptable(bdev);
2865
2866 if( bh ) {
2867 rval = scsi_partsize(bh, capacity,
2868 &geom[2], &geom[0], &geom[1]);
2869 kfree(bh);
2870 if( rval != -1 )
2871 return rval;
2872 }
2873
2874 dev_info(&adapter->dev->dev,
2875 "invalid partition on this disk on channel %d\n",
2876 sdev->channel);
2877
2878 /* Default heads (64) & sectors (32) */
2879 heads = 64;
2880 sectors = 32;
2881 cylinders = (ulong)capacity / (heads * sectors);
2882
2883 /* Handle extended translation size for logical drives > 1Gb */
2884 if ((ulong)capacity >= 0x200000) {
2885 heads = 255;
2886 sectors = 63;
2887 cylinders = (ulong)capacity / (heads * sectors);
2888 }
2889
2890 /* return result */
2891 geom[0] = heads;
2892 geom[1] = sectors;
2893 geom[2] = cylinders;
2894 }
2895
2896 return 0;
2897}
2898
2899/**
2900 * mega_init_scb()
2901 * @adapter - pointer to our soft state
2902 *
2903 * Allocate memory for the various pointers in the scb structures:
2904 * scatter-gather list pointer, passthru and extended passthru structure
2905 * pointers.
2906 */
2907static int
2908mega_init_scb(adapter_t *adapter)
2909{
2910 scb_t *scb;
2911 int i;
2912
2913 for( i = 0; i < adapter->max_cmds; i++ ) {
2914
2915 scb = &adapter->scb_list[i];
2916
2917 scb->sgl64 = NULL;
2918 scb->sgl = NULL;
2919 scb->pthru = NULL;
2920 scb->epthru = NULL;
2921 }
2922
2923 for( i = 0; i < adapter->max_cmds; i++ ) {
2924
2925 scb = &adapter->scb_list[i];
2926
2927 scb->idx = i;
2928
2929 scb->sgl64 = pci_alloc_consistent(adapter->dev,
2930 sizeof(mega_sgl64) * adapter->sglen,
2931 &scb->sgl_dma_addr);
2932
2933 scb->sgl = (mega_sglist *)scb->sgl64;
2934
2935 if( !scb->sgl ) {
2936 dev_warn(&adapter->dev->dev, "RAID: Can't allocate sglist\n");
2937 mega_free_sgl(adapter);
2938 return -1;
2939 }
2940
2941 scb->pthru = pci_alloc_consistent(adapter->dev,
2942 sizeof(mega_passthru),
2943 &scb->pthru_dma_addr);
2944
2945 if( !scb->pthru ) {
2946 dev_warn(&adapter->dev->dev, "RAID: Can't allocate passthru\n");
2947 mega_free_sgl(adapter);
2948 return -1;
2949 }
2950
2951 scb->epthru = pci_alloc_consistent(adapter->dev,
2952 sizeof(mega_ext_passthru),
2953 &scb->epthru_dma_addr);
2954
2955 if( !scb->epthru ) {
2956 dev_warn(&adapter->dev->dev,
2957 "Can't allocate extended passthru\n");
2958 mega_free_sgl(adapter);
2959 return -1;
2960 }
2961
2962
2963 scb->dma_type = MEGA_DMA_TYPE_NONE;
2964
2965 /*
2966 * Link to free list
2967 * lock not required since we are loading the driver, so no
2968 * commands possible right now.
2969 */
2970 scb->state = SCB_FREE;
2971 scb->cmd = NULL;
2972 list_add(&scb->list, &adapter->free_list);
2973 }
2974
2975 return 0;
2976}
2977
2978
2979/**
2980 * megadev_open()
2981 * @inode - unused
2982 * @filep - unused
2983 *
2984 * Routines for the character/ioctl interface to the driver. Find out if this
2985 * is a valid open.
2986 */
2987static int
2988megadev_open (struct inode *inode, struct file *filep)
2989{
2990 /*
2991 * Only allow superuser to access private ioctl interface
2992 */
2993 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
2994
2995 return 0;
2996}
2997
2998
2999/**
3000 * megadev_ioctl()
3001 * @inode - Our device inode
3002 * @filep - unused
3003 * @cmd - ioctl command
3004 * @arg - user buffer
3005 *
3006 * ioctl entry point for our private ioctl interface. We move the data in from
3007 * the user space, prepare the command (if necessary, convert the old MIMD
3008 * ioctl to new ioctl command), and issue a synchronous command to the
3009 * controller.
3010 */
3011static int
3012megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
3013{
3014 adapter_t *adapter;
3015 nitioctl_t uioc;
3016 int adapno;
3017 int rval;
3018 mega_passthru __user *upthru; /* user address for passthru */
3019 mega_passthru *pthru; /* copy user passthru here */
3020 dma_addr_t pthru_dma_hndl;
3021 void *data = NULL; /* data to be transferred */
3022 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */
3023 megacmd_t mc;
3024 megastat_t __user *ustats;
3025 int num_ldrv;
3026 u32 uxferaddr = 0;
3027 struct pci_dev *pdev;
3028
3029 ustats = NULL; /* avoid compilation warnings */
3030 num_ldrv = 0;
3031
3032 /*
3033 * Make sure only USCSICMD are issued through this interface.
3034 * MIMD application would still fire different command.
3035 */
3036 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3037 return -EINVAL;
3038 }
3039
3040 /*
3041 * Check and convert a possible MIMD command to NIT command.
3042 * mega_m_to_n() copies the data from the user space, so we do not
3043 * have to do it here.
3044 * NOTE: We will need some user address to copyout the data, therefore
3045 * the inteface layer will also provide us with the required user
3046 * addresses.
3047 */
3048 memset(&uioc, 0, sizeof(nitioctl_t));
3049 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3050 return rval;
3051
3052
3053 switch( uioc.opcode ) {
3054
3055 case GET_DRIVER_VER:
3056 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3057 return (-EFAULT);
3058
3059 break;
3060
3061 case GET_N_ADAP:
3062 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3063 return (-EFAULT);
3064
3065 /*
3066 * Shucks. MIMD interface returns a positive value for number
3067 * of adapters. TODO: Change it to return 0 when there is no
3068 * applicatio using mimd interface.
3069 */
3070 return hba_count;
3071
3072 case GET_ADAP_INFO:
3073
3074 /*
3075 * Which adapter
3076 */
3077 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3078 return (-ENODEV);
3079
3080 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3081 sizeof(struct mcontroller)) )
3082 return (-EFAULT);
3083 break;
3084
3085#if MEGA_HAVE_STATS
3086
3087 case GET_STATS:
3088 /*
3089 * Which adapter
3090 */
3091 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3092 return (-ENODEV);
3093
3094 adapter = hba_soft_state[adapno];
3095
3096 ustats = uioc.uioc_uaddr;
3097
3098 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3099 return (-EFAULT);
3100
3101 /*
3102 * Check for the validity of the logical drive number
3103 */
3104 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3105
3106 if( copy_to_user(ustats->nreads, adapter->nreads,
3107 num_ldrv*sizeof(u32)) )
3108 return -EFAULT;
3109
3110 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3111 num_ldrv*sizeof(u32)) )
3112 return -EFAULT;
3113
3114 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3115 num_ldrv*sizeof(u32)) )
3116 return -EFAULT;
3117
3118 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3119 num_ldrv*sizeof(u32)) )
3120 return -EFAULT;
3121
3122 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3123 num_ldrv*sizeof(u32)) )
3124 return -EFAULT;
3125
3126 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3127 num_ldrv*sizeof(u32)) )
3128 return -EFAULT;
3129
3130 return 0;
3131
3132#endif
3133 case MBOX_CMD:
3134
3135 /*
3136 * Which adapter
3137 */
3138 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3139 return (-ENODEV);
3140
3141 adapter = hba_soft_state[adapno];
3142
3143 /*
3144 * Deletion of logical drive is a special case. The adapter
3145 * should be quiescent before this command is issued.
3146 */
3147 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3148 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3149
3150 /*
3151 * Do we support this feature
3152 */
3153 if( !adapter->support_random_del ) {
3154 dev_warn(&adapter->dev->dev, "logdrv "
3155 "delete on non-supporting F/W\n");
3156
3157 return (-EINVAL);
3158 }
3159
3160 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3161
3162 if( rval == 0 ) {
3163 memset(&mc, 0, sizeof(megacmd_t));
3164
3165 mc.status = rval;
3166
3167 rval = mega_n_to_m((void __user *)arg, &mc);
3168 }
3169
3170 return rval;
3171 }
3172 /*
3173 * This interface only support the regular passthru commands.
3174 * Reject extended passthru and 64-bit passthru
3175 */
3176 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3177 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3178
3179 dev_warn(&adapter->dev->dev, "rejected passthru\n");
3180
3181 return (-EINVAL);
3182 }
3183
3184 /*
3185 * For all internal commands, the buffer must be allocated in
3186 * <4GB address range
3187 */
3188 if( make_local_pdev(adapter, &pdev) != 0 )
3189 return -EIO;
3190
3191 /* Is it a passthru command or a DCMD */
3192 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3193 /* Passthru commands */
3194
3195 pthru = pci_alloc_consistent(pdev,
3196 sizeof(mega_passthru),
3197 &pthru_dma_hndl);
3198
3199 if( pthru == NULL ) {
3200 free_local_pdev(pdev);
3201 return (-ENOMEM);
3202 }
3203
3204 /*
3205 * The user passthru structure
3206 */
3207 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr;
3208
3209 /*
3210 * Copy in the user passthru here.
3211 */
3212 if( copy_from_user(pthru, upthru,
3213 sizeof(mega_passthru)) ) {
3214
3215 pci_free_consistent(pdev,
3216 sizeof(mega_passthru), pthru,
3217 pthru_dma_hndl);
3218
3219 free_local_pdev(pdev);
3220
3221 return (-EFAULT);
3222 }
3223
3224 /*
3225 * Is there a data transfer
3226 */
3227 if( pthru->dataxferlen ) {
3228 data = pci_alloc_consistent(pdev,
3229 pthru->dataxferlen,
3230 &data_dma_hndl);
3231
3232 if( data == NULL ) {
3233 pci_free_consistent(pdev,
3234 sizeof(mega_passthru),
3235 pthru,
3236 pthru_dma_hndl);
3237
3238 free_local_pdev(pdev);
3239
3240 return (-ENOMEM);
3241 }
3242
3243 /*
3244 * Save the user address and point the kernel
3245 * address at just allocated memory
3246 */
3247 uxferaddr = pthru->dataxferaddr;
3248 pthru->dataxferaddr = data_dma_hndl;
3249 }
3250
3251
3252 /*
3253 * Is data coming down-stream
3254 */
3255 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3256 /*
3257 * Get the user data
3258 */
3259 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3260 pthru->dataxferlen) ) {
3261 rval = (-EFAULT);
3262 goto freemem_and_return;
3263 }
3264 }
3265
3266 memset(&mc, 0, sizeof(megacmd_t));
3267
3268 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3269 mc.xferaddr = (u32)pthru_dma_hndl;
3270
3271 /*
3272 * Issue the command
3273 */
3274 mega_internal_command(adapter, &mc, pthru);
3275
3276 rval = mega_n_to_m((void __user *)arg, &mc);
3277
3278 if( rval ) goto freemem_and_return;
3279
3280
3281 /*
3282 * Is data going up-stream
3283 */
3284 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3285 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3286 pthru->dataxferlen) ) {
3287 rval = (-EFAULT);
3288 }
3289 }
3290
3291 /*
3292 * Send the request sense data also, irrespective of
3293 * whether the user has asked for it or not.
3294 */
3295 if (copy_to_user(upthru->reqsensearea,
3296 pthru->reqsensearea, 14))
3297 rval = -EFAULT;
3298
3299freemem_and_return:
3300 if( pthru->dataxferlen ) {
3301 pci_free_consistent(pdev,
3302 pthru->dataxferlen, data,
3303 data_dma_hndl);
3304 }
3305
3306 pci_free_consistent(pdev, sizeof(mega_passthru),
3307 pthru, pthru_dma_hndl);
3308
3309 free_local_pdev(pdev);
3310
3311 return rval;
3312 }
3313 else {
3314 /* DCMD commands */
3315
3316 /*
3317 * Is there a data transfer
3318 */
3319 if( uioc.xferlen ) {
3320 data = pci_alloc_consistent(pdev,
3321 uioc.xferlen, &data_dma_hndl);
3322
3323 if( data == NULL ) {
3324 free_local_pdev(pdev);
3325 return (-ENOMEM);
3326 }
3327
3328 uxferaddr = MBOX(uioc)->xferaddr;
3329 }
3330
3331 /*
3332 * Is data coming down-stream
3333 */
3334 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3335 /*
3336 * Get the user data
3337 */
3338 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3339 uioc.xferlen) ) {
3340
3341 pci_free_consistent(pdev,
3342 uioc.xferlen,
3343 data, data_dma_hndl);
3344
3345 free_local_pdev(pdev);
3346
3347 return (-EFAULT);
3348 }
3349 }
3350
3351 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3352
3353 mc.xferaddr = (u32)data_dma_hndl;
3354
3355 /*
3356 * Issue the command
3357 */
3358 mega_internal_command(adapter, &mc, NULL);
3359
3360 rval = mega_n_to_m((void __user *)arg, &mc);
3361
3362 if( rval ) {
3363 if( uioc.xferlen ) {
3364 pci_free_consistent(pdev,
3365 uioc.xferlen, data,
3366 data_dma_hndl);
3367 }
3368
3369 free_local_pdev(pdev);
3370
3371 return rval;
3372 }
3373
3374 /*
3375 * Is data going up-stream
3376 */
3377 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3378 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3379 uioc.xferlen) ) {
3380
3381 rval = (-EFAULT);
3382 }
3383 }
3384
3385 if( uioc.xferlen ) {
3386 pci_free_consistent(pdev,
3387 uioc.xferlen, data,
3388 data_dma_hndl);
3389 }
3390
3391 free_local_pdev(pdev);
3392
3393 return rval;
3394 }
3395
3396 default:
3397 return (-EINVAL);
3398 }
3399
3400 return 0;
3401}
3402
3403static long
3404megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
3405{
3406 int ret;
3407
3408 mutex_lock(&megadev_mutex);
3409 ret = megadev_ioctl(filep, cmd, arg);
3410 mutex_unlock(&megadev_mutex);
3411
3412 return ret;
3413}
3414
3415/**
3416 * mega_m_to_n()
3417 * @arg - user address
3418 * @uioc - new ioctl structure
3419 *
3420 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3421 * structure
3422 *
3423 * Converts the older mimd ioctl structure to newer NIT structure
3424 */
3425static int
3426mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3427{
3428 struct uioctl_t uioc_mimd;
3429 char signature[8] = {0};
3430 u8 opcode;
3431 u8 subopcode;
3432
3433
3434 /*
3435 * check is the application conforms to NIT. We do not have to do much
3436 * in that case.
3437 * We exploit the fact that the signature is stored in the very
3438 * beginning of the structure.
3439 */
3440
3441 if( copy_from_user(signature, arg, 7) )
3442 return (-EFAULT);
3443
3444 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3445
3446 /*
3447 * NOTE NOTE: The nit ioctl is still under flux because of
3448 * change of mailbox definition, in HPE. No applications yet
3449 * use this interface and let's not have applications use this
3450 * interface till the new specifitions are in place.
3451 */
3452 return -EINVAL;
3453#if 0
3454 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3455 return (-EFAULT);
3456 return 0;
3457#endif
3458 }
3459
3460 /*
3461 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3462 *
3463 * Get the user ioctl structure
3464 */
3465 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3466 return (-EFAULT);
3467
3468
3469 /*
3470 * Get the opcode and subopcode for the commands
3471 */
3472 opcode = uioc_mimd.ui.fcs.opcode;
3473 subopcode = uioc_mimd.ui.fcs.subopcode;
3474
3475 switch (opcode) {
3476 case 0x82:
3477
3478 switch (subopcode) {
3479
3480 case MEGAIOC_QDRVRVER: /* Query driver version */
3481 uioc->opcode = GET_DRIVER_VER;
3482 uioc->uioc_uaddr = uioc_mimd.data;
3483 break;
3484
3485 case MEGAIOC_QNADAP: /* Get # of adapters */
3486 uioc->opcode = GET_N_ADAP;
3487 uioc->uioc_uaddr = uioc_mimd.data;
3488 break;
3489
3490 case MEGAIOC_QADAPINFO: /* Get adapter information */
3491 uioc->opcode = GET_ADAP_INFO;
3492 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3493 uioc->uioc_uaddr = uioc_mimd.data;
3494 break;
3495
3496 default:
3497 return(-EINVAL);
3498 }
3499
3500 break;
3501
3502
3503 case 0x81:
3504
3505 uioc->opcode = MBOX_CMD;
3506 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3507
3508 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3509
3510 uioc->xferlen = uioc_mimd.ui.fcs.length;
3511
3512 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3513 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3514
3515 break;
3516
3517 case 0x80:
3518
3519 uioc->opcode = MBOX_CMD;
3520 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3521
3522 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3523
3524 /*
3525 * Choose the xferlen bigger of input and output data
3526 */
3527 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3528 uioc_mimd.outlen : uioc_mimd.inlen;
3529
3530 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3531 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3532
3533 break;
3534
3535 default:
3536 return (-EINVAL);
3537
3538 }
3539
3540 return 0;
3541}
3542
3543/*
3544 * mega_n_to_m()
3545 * @arg - user address
3546 * @mc - mailbox command
3547 *
3548 * Updates the status information to the application, depending on application
3549 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3550 */
3551static int
3552mega_n_to_m(void __user *arg, megacmd_t *mc)
3553{
3554 nitioctl_t __user *uiocp;
3555 megacmd_t __user *umc;
3556 mega_passthru __user *upthru;
3557 struct uioctl_t __user *uioc_mimd;
3558 char signature[8] = {0};
3559
3560 /*
3561 * check is the application conforms to NIT.
3562 */
3563 if( copy_from_user(signature, arg, 7) )
3564 return -EFAULT;
3565
3566 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3567
3568 uiocp = arg;
3569
3570 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3571 return (-EFAULT);
3572
3573 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3574
3575 umc = MBOX_P(uiocp);
3576
3577 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3578 return -EFAULT;
3579
3580 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3581 return (-EFAULT);
3582 }
3583 }
3584 else {
3585 uioc_mimd = arg;
3586
3587 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3588 return (-EFAULT);
3589
3590 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3591
3592 umc = (megacmd_t __user *)uioc_mimd->mbox;
3593
3594 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3595 return (-EFAULT);
3596
3597 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3598 return (-EFAULT);
3599 }
3600 }
3601
3602 return 0;
3603}
3604
3605
3606/*
3607 * MEGARAID 'FW' commands.
3608 */
3609
3610/**
3611 * mega_is_bios_enabled()
3612 * @adapter - pointer to our soft state
3613 *
3614 * issue command to find out if the BIOS is enabled for this controller
3615 */
3616static int
3617mega_is_bios_enabled(adapter_t *adapter)
3618{
3619 unsigned char raw_mbox[sizeof(struct mbox_out)];
3620 mbox_t *mbox;
3621 int ret;
3622
3623 mbox = (mbox_t *)raw_mbox;
3624
3625 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3626
3627 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3628
3629 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3630
3631 raw_mbox[0] = IS_BIOS_ENABLED;
3632 raw_mbox[2] = GET_BIOS;
3633
3634
3635 ret = issue_scb_block(adapter, raw_mbox);
3636
3637 return *(char *)adapter->mega_buffer;
3638}
3639
3640
3641/**
3642 * mega_enum_raid_scsi()
3643 * @adapter - pointer to our soft state
3644 *
3645 * Find out what channels are RAID/SCSI. This information is used to
3646 * differentiate the virtual channels and physical channels and to support
3647 * ROMB feature and non-disk devices.
3648 */
3649static void
3650mega_enum_raid_scsi(adapter_t *adapter)
3651{
3652 unsigned char raw_mbox[sizeof(struct mbox_out)];
3653 mbox_t *mbox;
3654 int i;
3655
3656 mbox = (mbox_t *)raw_mbox;
3657
3658 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3659
3660 /*
3661 * issue command to find out what channels are raid/scsi
3662 */
3663 raw_mbox[0] = CHNL_CLASS;
3664 raw_mbox[2] = GET_CHNL_CLASS;
3665
3666 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3667
3668 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3669
3670 /*
3671 * Non-ROMB firmware fail this command, so all channels
3672 * must be shown RAID
3673 */
3674 adapter->mega_ch_class = 0xFF;
3675
3676 if(!issue_scb_block(adapter, raw_mbox)) {
3677 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
3678
3679 }
3680
3681 for( i = 0; i < adapter->product_info.nchannels; i++ ) {
3682 if( (adapter->mega_ch_class >> i) & 0x01 ) {
3683 dev_info(&adapter->dev->dev, "channel[%d] is raid\n",
3684 i);
3685 }
3686 else {
3687 dev_info(&adapter->dev->dev, "channel[%d] is scsi\n",
3688 i);
3689 }
3690 }
3691
3692 return;
3693}
3694
3695
3696/**
3697 * mega_get_boot_drv()
3698 * @adapter - pointer to our soft state
3699 *
3700 * Find out which device is the boot device. Note, any logical drive or any
3701 * phyical device (e.g., a CDROM) can be designated as a boot device.
3702 */
3703static void
3704mega_get_boot_drv(adapter_t *adapter)
3705{
3706 struct private_bios_data *prv_bios_data;
3707 unsigned char raw_mbox[sizeof(struct mbox_out)];
3708 mbox_t *mbox;
3709 u16 cksum = 0;
3710 u8 *cksum_p;
3711 u8 boot_pdrv;
3712 int i;
3713
3714 mbox = (mbox_t *)raw_mbox;
3715
3716 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3717
3718 raw_mbox[0] = BIOS_PVT_DATA;
3719 raw_mbox[2] = GET_BIOS_PVT_DATA;
3720
3721 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3722
3723 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3724
3725 adapter->boot_ldrv_enabled = 0;
3726 adapter->boot_ldrv = 0;
3727
3728 adapter->boot_pdrv_enabled = 0;
3729 adapter->boot_pdrv_ch = 0;
3730 adapter->boot_pdrv_tgt = 0;
3731
3732 if(issue_scb_block(adapter, raw_mbox) == 0) {
3733 prv_bios_data =
3734 (struct private_bios_data *)adapter->mega_buffer;
3735
3736 cksum = 0;
3737 cksum_p = (char *)prv_bios_data;
3738 for (i = 0; i < 14; i++ ) {
3739 cksum += (u16)(*cksum_p++);
3740 }
3741
3742 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
3743
3744 /*
3745 * If MSB is set, a physical drive is set as boot
3746 * device
3747 */
3748 if( prv_bios_data->boot_drv & 0x80 ) {
3749 adapter->boot_pdrv_enabled = 1;
3750 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
3751 adapter->boot_pdrv_ch = boot_pdrv / 16;
3752 adapter->boot_pdrv_tgt = boot_pdrv % 16;
3753 }
3754 else {
3755 adapter->boot_ldrv_enabled = 1;
3756 adapter->boot_ldrv = prv_bios_data->boot_drv;
3757 }
3758 }
3759 }
3760
3761}
3762
3763/**
3764 * mega_support_random_del()
3765 * @adapter - pointer to our soft state
3766 *
3767 * Find out if this controller supports random deletion and addition of
3768 * logical drives
3769 */
3770static int
3771mega_support_random_del(adapter_t *adapter)
3772{
3773 unsigned char raw_mbox[sizeof(struct mbox_out)];
3774 mbox_t *mbox;
3775 int rval;
3776
3777 mbox = (mbox_t *)raw_mbox;
3778
3779 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3780
3781 /*
3782 * issue command
3783 */
3784 raw_mbox[0] = FC_DEL_LOGDRV;
3785 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
3786
3787 rval = issue_scb_block(adapter, raw_mbox);
3788
3789 return !rval;
3790}
3791
3792
3793/**
3794 * mega_support_ext_cdb()
3795 * @adapter - pointer to our soft state
3796 *
3797 * Find out if this firmware support cdblen > 10
3798 */
3799static int
3800mega_support_ext_cdb(adapter_t *adapter)
3801{
3802 unsigned char raw_mbox[sizeof(struct mbox_out)];
3803 mbox_t *mbox;
3804 int rval;
3805
3806 mbox = (mbox_t *)raw_mbox;
3807
3808 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3809 /*
3810 * issue command to find out if controller supports extended CDBs.
3811 */
3812 raw_mbox[0] = 0xA4;
3813 raw_mbox[2] = 0x16;
3814
3815 rval = issue_scb_block(adapter, raw_mbox);
3816
3817 return !rval;
3818}
3819
3820
3821/**
3822 * mega_del_logdrv()
3823 * @adapter - pointer to our soft state
3824 * @logdrv - logical drive to be deleted
3825 *
3826 * Delete the specified logical drive. It is the responsibility of the user
3827 * app to let the OS know about this operation.
3828 */
3829static int
3830mega_del_logdrv(adapter_t *adapter, int logdrv)
3831{
3832 unsigned long flags;
3833 scb_t *scb;
3834 int rval;
3835
3836 /*
3837 * Stop sending commands to the controller, queue them internally.
3838 * When deletion is complete, ISR will flush the queue.
3839 */
3840 atomic_set(&adapter->quiescent, 1);
3841
3842 /*
3843 * Wait till all the issued commands are complete and there are no
3844 * commands in the pending queue
3845 */
3846 while (atomic_read(&adapter->pend_cmds) > 0 ||
3847 !list_empty(&adapter->pending_list))
3848 msleep(1000); /* sleep for 1s */
3849
3850 rval = mega_do_del_logdrv(adapter, logdrv);
3851
3852 spin_lock_irqsave(&adapter->lock, flags);
3853
3854 /*
3855 * If delete operation was successful, add 0x80 to the logical drive
3856 * ids for commands in the pending queue.
3857 */
3858 if (adapter->read_ldidmap) {
3859 struct list_head *pos;
3860 list_for_each(pos, &adapter->pending_list) {
3861 scb = list_entry(pos, scb_t, list);
3862 if (scb->pthru->logdrv < 0x80 )
3863 scb->pthru->logdrv += 0x80;
3864 }
3865 }
3866
3867 atomic_set(&adapter->quiescent, 0);
3868
3869 mega_runpendq(adapter);
3870
3871 spin_unlock_irqrestore(&adapter->lock, flags);
3872
3873 return rval;
3874}
3875
3876
3877static int
3878mega_do_del_logdrv(adapter_t *adapter, int logdrv)
3879{
3880 megacmd_t mc;
3881 int rval;
3882
3883 memset( &mc, 0, sizeof(megacmd_t));
3884
3885 mc.cmd = FC_DEL_LOGDRV;
3886 mc.opcode = OP_DEL_LOGDRV;
3887 mc.subopcode = logdrv;
3888
3889 rval = mega_internal_command(adapter, &mc, NULL);
3890
3891 /* log this event */
3892 if(rval) {
3893 dev_warn(&adapter->dev->dev, "Delete LD-%d failed", logdrv);
3894 return rval;
3895 }
3896
3897 /*
3898 * After deleting first logical drive, the logical drives must be
3899 * addressed by adding 0x80 to the logical drive id.
3900 */
3901 adapter->read_ldidmap = 1;
3902
3903 return rval;
3904}
3905
3906
3907/**
3908 * mega_get_max_sgl()
3909 * @adapter - pointer to our soft state
3910 *
3911 * Find out the maximum number of scatter-gather elements supported by this
3912 * version of the firmware
3913 */
3914static void
3915mega_get_max_sgl(adapter_t *adapter)
3916{
3917 unsigned char raw_mbox[sizeof(struct mbox_out)];
3918 mbox_t *mbox;
3919
3920 mbox = (mbox_t *)raw_mbox;
3921
3922 memset(mbox, 0, sizeof(raw_mbox));
3923
3924 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3925
3926 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3927
3928 raw_mbox[0] = MAIN_MISC_OPCODE;
3929 raw_mbox[2] = GET_MAX_SG_SUPPORT;
3930
3931
3932 if( issue_scb_block(adapter, raw_mbox) ) {
3933 /*
3934 * f/w does not support this command. Choose the default value
3935 */
3936 adapter->sglen = MIN_SGLIST;
3937 }
3938 else {
3939 adapter->sglen = *((char *)adapter->mega_buffer);
3940
3941 /*
3942 * Make sure this is not more than the resources we are
3943 * planning to allocate
3944 */
3945 if ( adapter->sglen > MAX_SGLIST )
3946 adapter->sglen = MAX_SGLIST;
3947 }
3948
3949 return;
3950}
3951
3952
3953/**
3954 * mega_support_cluster()
3955 * @adapter - pointer to our soft state
3956 *
3957 * Find out if this firmware support cluster calls.
3958 */
3959static int
3960mega_support_cluster(adapter_t *adapter)
3961{
3962 unsigned char raw_mbox[sizeof(struct mbox_out)];
3963 mbox_t *mbox;
3964
3965 mbox = (mbox_t *)raw_mbox;
3966
3967 memset(mbox, 0, sizeof(raw_mbox));
3968
3969 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3970
3971 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3972
3973 /*
3974 * Try to get the initiator id. This command will succeed iff the
3975 * clustering is available on this HBA.
3976 */
3977 raw_mbox[0] = MEGA_GET_TARGET_ID;
3978
3979 if( issue_scb_block(adapter, raw_mbox) == 0 ) {
3980
3981 /*
3982 * Cluster support available. Get the initiator target id.
3983 * Tell our id to mid-layer too.
3984 */
3985 adapter->this_id = *(u32 *)adapter->mega_buffer;
3986 adapter->host->this_id = adapter->this_id;
3987
3988 return 1;
3989 }
3990
3991 return 0;
3992}
3993
3994#ifdef CONFIG_PROC_FS
3995/**
3996 * mega_adapinq()
3997 * @adapter - pointer to our soft state
3998 * @dma_handle - DMA address of the buffer
3999 *
4000 * Issue internal commands while interrupts are available.
4001 * We only issue direct mailbox commands from within the driver. ioctl()
4002 * interface using these routines can issue passthru commands.
4003 */
4004static int
4005mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
4006{
4007 megacmd_t mc;
4008
4009 memset(&mc, 0, sizeof(megacmd_t));
4010
4011 if( adapter->flag & BOARD_40LD ) {
4012 mc.cmd = FC_NEW_CONFIG;
4013 mc.opcode = NC_SUBOP_ENQUIRY3;
4014 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
4015 }
4016 else {
4017 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
4018 }
4019
4020 mc.xferaddr = (u32)dma_handle;
4021
4022 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
4023 return -1;
4024 }
4025
4026 return 0;
4027}
4028
4029
4030/** mega_internal_dev_inquiry()
4031 * @adapter - pointer to our soft state
4032 * @ch - channel for this device
4033 * @tgt - ID of this device
4034 * @buf_dma_handle - DMA address of the buffer
4035 *
4036 * Issue the scsi inquiry for the specified device.
4037 */
4038static int
4039mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4040 dma_addr_t buf_dma_handle)
4041{
4042 mega_passthru *pthru;
4043 dma_addr_t pthru_dma_handle;
4044 megacmd_t mc;
4045 int rval;
4046 struct pci_dev *pdev;
4047
4048
4049 /*
4050 * For all internal commands, the buffer must be allocated in <4GB
4051 * address range
4052 */
4053 if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4054
4055 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4056 &pthru_dma_handle);
4057
4058 if( pthru == NULL ) {
4059 free_local_pdev(pdev);
4060 return -1;
4061 }
4062
4063 pthru->timeout = 2;
4064 pthru->ars = 1;
4065 pthru->reqsenselen = 14;
4066 pthru->islogical = 0;
4067
4068 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4069
4070 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4071
4072 pthru->cdblen = 6;
4073
4074 pthru->cdb[0] = INQUIRY;
4075 pthru->cdb[1] = 0;
4076 pthru->cdb[2] = 0;
4077 pthru->cdb[3] = 0;
4078 pthru->cdb[4] = 255;
4079 pthru->cdb[5] = 0;
4080
4081
4082 pthru->dataxferaddr = (u32)buf_dma_handle;
4083 pthru->dataxferlen = 256;
4084
4085 memset(&mc, 0, sizeof(megacmd_t));
4086
4087 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4088 mc.xferaddr = (u32)pthru_dma_handle;
4089
4090 rval = mega_internal_command(adapter, &mc, pthru);
4091
4092 pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4093 pthru_dma_handle);
4094
4095 free_local_pdev(pdev);
4096
4097 return rval;
4098}
4099#endif
4100
4101/**
4102 * mega_internal_command()
4103 * @adapter - pointer to our soft state
4104 * @mc - the mailbox command
4105 * @pthru - Passthru structure for DCDB commands
4106 *
4107 * Issue the internal commands in interrupt mode.
4108 * The last argument is the address of the passthru structure if the command
4109 * to be fired is a passthru command
4110 *
4111 * Note: parameter 'pthru' is null for non-passthru commands.
4112 */
4113static int
4114mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
4115{
4116 unsigned long flags;
4117 scb_t *scb;
4118 int rval;
4119
4120 /*
4121 * The internal commands share one command id and hence are
4122 * serialized. This is so because we want to reserve maximum number of
4123 * available command ids for the I/O commands.
4124 */
4125 mutex_lock(&adapter->int_mtx);
4126
4127 scb = &adapter->int_scb;
4128 memset(scb, 0, sizeof(scb_t));
4129
4130 scb->idx = CMDID_INT_CMDS;
4131 scb->state |= SCB_ACTIVE | SCB_PENDQ;
4132
4133 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4134
4135 /*
4136 * Is it a passthru command
4137 */
4138 if (mc->cmd == MEGA_MBOXCMD_PASSTHRU)
4139 scb->pthru = pthru;
4140
4141 spin_lock_irqsave(&adapter->lock, flags);
4142 list_add_tail(&scb->list, &adapter->pending_list);
4143 /*
4144 * Check if the HBA is in quiescent state, e.g., during a
4145 * delete logical drive opertion. If it is, don't run
4146 * the pending_list.
4147 */
4148 if (atomic_read(&adapter->quiescent) == 0)
4149 mega_runpendq(adapter);
4150 spin_unlock_irqrestore(&adapter->lock, flags);
4151
4152 wait_for_completion(&adapter->int_waitq);
4153
4154 mc->status = rval = adapter->int_status;
4155
4156 /*
4157 * Print a debug message for all failed commands. Applications can use
4158 * this information.
4159 */
4160 if (rval && trace_level) {
4161 dev_info(&adapter->dev->dev, "cmd [%x, %x, %x] status:[%x]\n",
4162 mc->cmd, mc->opcode, mc->subopcode, rval);
4163 }
4164
4165 mutex_unlock(&adapter->int_mtx);
4166 return rval;
4167}
4168
4169static struct scsi_host_template megaraid_template = {
4170 .module = THIS_MODULE,
4171 .name = "MegaRAID",
4172 .proc_name = "megaraid_legacy",
4173 .info = megaraid_info,
4174 .queuecommand = megaraid_queue,
4175 .bios_param = megaraid_biosparam,
4176 .max_sectors = MAX_SECTORS_PER_IO,
4177 .can_queue = MAX_COMMANDS,
4178 .this_id = DEFAULT_INITIATOR_ID,
4179 .sg_tablesize = MAX_SGLIST,
4180 .cmd_per_lun = DEF_CMD_PER_LUN,
4181 .use_clustering = ENABLE_CLUSTERING,
4182 .eh_abort_handler = megaraid_abort,
4183 .eh_device_reset_handler = megaraid_reset,
4184 .eh_bus_reset_handler = megaraid_reset,
4185 .eh_host_reset_handler = megaraid_reset,
4186 .no_write_same = 1,
4187};
4188
4189static int
4190megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4191{
4192 struct Scsi_Host *host;
4193 adapter_t *adapter;
4194 unsigned long mega_baseport, tbase, flag = 0;
4195 u16 subsysid, subsysvid;
4196 u8 pci_bus, pci_dev_func;
4197 int irq, i, j;
4198 int error = -ENODEV;
4199
4200 if (pci_enable_device(pdev))
4201 goto out;
4202 pci_set_master(pdev);
4203
4204 pci_bus = pdev->bus->number;
4205 pci_dev_func = pdev->devfn;
4206
4207 /*
4208 * The megaraid3 stuff reports the ID of the Intel part which is not
4209 * remotely specific to the megaraid
4210 */
4211 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4212 u16 magic;
4213 /*
4214 * Don't fall over the Compaq management cards using the same
4215 * PCI identifier
4216 */
4217 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4218 pdev->subsystem_device == 0xC000)
4219 return -ENODEV;
4220 /* Now check the magic signature byte */
4221 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4222 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4223 return -ENODEV;
4224 /* Ok it is probably a megaraid */
4225 }
4226
4227 /*
4228 * For these vendor and device ids, signature offsets are not
4229 * valid and 64 bit is implicit
4230 */
4231 if (id->driver_data & BOARD_64BIT)
4232 flag |= BOARD_64BIT;
4233 else {
4234 u32 magic64;
4235
4236 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4237 if (magic64 == HBA_SIGNATURE_64BIT)
4238 flag |= BOARD_64BIT;
4239 }
4240
4241 subsysvid = pdev->subsystem_vendor;
4242 subsysid = pdev->subsystem_device;
4243
4244 dev_notice(&pdev->dev, "found 0x%4.04x:0x%4.04x\n",
4245 id->vendor, id->device);
4246
4247 /* Read the base port and IRQ from PCI */
4248 mega_baseport = pci_resource_start(pdev, 0);
4249 irq = pdev->irq;
4250
4251 tbase = mega_baseport;
4252 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4253 flag |= BOARD_MEMMAP;
4254
4255 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4256 dev_warn(&pdev->dev, "mem region busy!\n");
4257 goto out_disable_device;
4258 }
4259
4260 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4261 if (!mega_baseport) {
4262 dev_warn(&pdev->dev, "could not map hba memory\n");
4263 goto out_release_region;
4264 }
4265 } else {
4266 flag |= BOARD_IOMAP;
4267 mega_baseport += 0x10;
4268
4269 if (!request_region(mega_baseport, 16, "megaraid"))
4270 goto out_disable_device;
4271 }
4272
4273 /* Initialize SCSI Host structure */
4274 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4275 if (!host)
4276 goto out_iounmap;
4277
4278 adapter = (adapter_t *)host->hostdata;
4279 memset(adapter, 0, sizeof(adapter_t));
4280
4281 dev_notice(&pdev->dev,
4282 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4283 host->host_no, mega_baseport, irq);
4284
4285 adapter->base = mega_baseport;
4286 if (flag & BOARD_MEMMAP)
4287 adapter->mmio_base = (void __iomem *) mega_baseport;
4288
4289 INIT_LIST_HEAD(&adapter->free_list);
4290 INIT_LIST_HEAD(&adapter->pending_list);
4291 INIT_LIST_HEAD(&adapter->completed_list);
4292
4293 adapter->flag = flag;
4294 spin_lock_init(&adapter->lock);
4295
4296 host->cmd_per_lun = max_cmd_per_lun;
4297 host->max_sectors = max_sectors_per_io;
4298
4299 adapter->dev = pdev;
4300 adapter->host = host;
4301
4302 adapter->host->irq = irq;
4303
4304 if (flag & BOARD_MEMMAP)
4305 adapter->host->base = tbase;
4306 else {
4307 adapter->host->io_port = tbase;
4308 adapter->host->n_io_port = 16;
4309 }
4310
4311 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4312
4313 /*
4314 * Allocate buffer to issue internal commands.
4315 */
4316 adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4317 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4318 if (!adapter->mega_buffer) {
4319 dev_warn(&pdev->dev, "out of RAM\n");
4320 goto out_host_put;
4321 }
4322
4323 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
4324 if (!adapter->scb_list) {
4325 dev_warn(&pdev->dev, "out of RAM\n");
4326 goto out_free_cmd_buffer;
4327 }
4328
4329 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4330 megaraid_isr_memmapped : megaraid_isr_iomapped,
4331 IRQF_SHARED, "megaraid", adapter)) {
4332 dev_warn(&pdev->dev, "Couldn't register IRQ %d!\n", irq);
4333 goto out_free_scb_list;
4334 }
4335
4336 if (mega_setup_mailbox(adapter))
4337 goto out_free_irq;
4338
4339 if (mega_query_adapter(adapter))
4340 goto out_free_mbox;
4341
4342 /*
4343 * Have checks for some buggy f/w
4344 */
4345 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4346 /*
4347 * Which firmware
4348 */
4349 if (!strcmp(adapter->fw_version, "3.00") ||
4350 !strcmp(adapter->fw_version, "3.01")) {
4351
4352 dev_warn(&pdev->dev,
4353 "Your card is a Dell PERC "
4354 "2/SC RAID controller with "
4355 "firmware\nmegaraid: 3.00 or 3.01. "
4356 "This driver is known to have "
4357 "corruption issues\nmegaraid: with "
4358 "those firmware versions on this "
4359 "specific card. In order\nmegaraid: "
4360 "to protect your data, please upgrade "
4361 "your firmware to version\nmegaraid: "
4362 "3.10 or later, available from the "
4363 "Dell Technical Support web\n"
4364 "megaraid: site at\nhttp://support."
4365 "dell.com/us/en/filelib/download/"
4366 "index.asp?fileid=2940\n"
4367 );
4368 }
4369 }
4370
4371 /*
4372 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4373 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4374 * support, since this firmware cannot handle 64 bit
4375 * addressing
4376 */
4377 if ((subsysvid == PCI_VENDOR_ID_HP) &&
4378 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4379 /*
4380 * which firmware
4381 */
4382 if (!strcmp(adapter->fw_version, "H01.07") ||
4383 !strcmp(adapter->fw_version, "H01.08") ||
4384 !strcmp(adapter->fw_version, "H01.09") ) {
4385 dev_warn(&pdev->dev,
4386 "Firmware H.01.07, "
4387 "H.01.08, and H.01.09 on 1M/2M "
4388 "controllers\n"
4389 "do not support 64 bit "
4390 "addressing.\nDISABLING "
4391 "64 bit support.\n");
4392 adapter->flag &= ~BOARD_64BIT;
4393 }
4394 }
4395
4396 if (mega_is_bios_enabled(adapter))
4397 mega_hbas[hba_count].is_bios_enabled = 1;
4398 mega_hbas[hba_count].hostdata_addr = adapter;
4399
4400 /*
4401 * Find out which channel is raid and which is scsi. This is
4402 * for ROMB support.
4403 */
4404 mega_enum_raid_scsi(adapter);
4405
4406 /*
4407 * Find out if a logical drive is set as the boot drive. If
4408 * there is one, will make that as the first logical drive.
4409 * ROMB: Do we have to boot from a physical drive. Then all
4410 * the physical drives would appear before the logical disks.
4411 * Else, all the physical drives would be exported to the mid
4412 * layer after logical drives.
4413 */
4414 mega_get_boot_drv(adapter);
4415
4416 if (adapter->boot_pdrv_enabled) {
4417 j = adapter->product_info.nchannels;
4418 for( i = 0; i < j; i++ )
4419 adapter->logdrv_chan[i] = 0;
4420 for( i = j; i < NVIRT_CHAN + j; i++ )
4421 adapter->logdrv_chan[i] = 1;
4422 } else {
4423 for (i = 0; i < NVIRT_CHAN; i++)
4424 adapter->logdrv_chan[i] = 1;
4425 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4426 adapter->logdrv_chan[i] = 0;
4427 adapter->mega_ch_class <<= NVIRT_CHAN;
4428 }
4429
4430 /*
4431 * Do we support random deletion and addition of logical
4432 * drives
4433 */
4434 adapter->read_ldidmap = 0; /* set it after first logdrv
4435 delete cmd */
4436 adapter->support_random_del = mega_support_random_del(adapter);
4437
4438 /* Initialize SCBs */
4439 if (mega_init_scb(adapter))
4440 goto out_free_mbox;
4441
4442 /*
4443 * Reset the pending commands counter
4444 */
4445 atomic_set(&adapter->pend_cmds, 0);
4446
4447 /*
4448 * Reset the adapter quiescent flag
4449 */
4450 atomic_set(&adapter->quiescent, 0);
4451
4452 hba_soft_state[hba_count] = adapter;
4453
4454 /*
4455 * Fill in the structure which needs to be passed back to the
4456 * application when it does an ioctl() for controller related
4457 * information.
4458 */
4459 i = hba_count;
4460
4461 mcontroller[i].base = mega_baseport;
4462 mcontroller[i].irq = irq;
4463 mcontroller[i].numldrv = adapter->numldrv;
4464 mcontroller[i].pcibus = pci_bus;
4465 mcontroller[i].pcidev = id->device;
4466 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4467 mcontroller[i].pciid = -1;
4468 mcontroller[i].pcivendor = id->vendor;
4469 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4470 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4471
4472
4473 /* Set the Mode of addressing to 64 bit if we can */
4474 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
4475 pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
4476 adapter->has_64bit_addr = 1;
4477 } else {
4478 pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4479 adapter->has_64bit_addr = 0;
4480 }
4481
4482 mutex_init(&adapter->int_mtx);
4483 init_completion(&adapter->int_waitq);
4484
4485 adapter->this_id = DEFAULT_INITIATOR_ID;
4486 adapter->host->this_id = DEFAULT_INITIATOR_ID;
4487
4488#if MEGA_HAVE_CLUSTERING
4489 /*
4490 * Is cluster support enabled on this controller
4491 * Note: In a cluster the HBAs ( the initiators ) will have
4492 * different target IDs and we cannot assume it to be 7. Call
4493 * to mega_support_cluster() will get the target ids also if
4494 * the cluster support is available
4495 */
4496 adapter->has_cluster = mega_support_cluster(adapter);
4497 if (adapter->has_cluster) {
4498 dev_notice(&pdev->dev,
4499 "Cluster driver, initiator id:%d\n",
4500 adapter->this_id);
4501 }
4502#endif
4503
4504 pci_set_drvdata(pdev, host);
4505
4506 mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4507
4508 error = scsi_add_host(host, &pdev->dev);
4509 if (error)
4510 goto out_free_mbox;
4511
4512 scsi_scan_host(host);
4513 hba_count++;
4514 return 0;
4515
4516 out_free_mbox:
4517 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4518 adapter->una_mbox64, adapter->una_mbox64_dma);
4519 out_free_irq:
4520 free_irq(adapter->host->irq, adapter);
4521 out_free_scb_list:
4522 kfree(adapter->scb_list);
4523 out_free_cmd_buffer:
4524 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4525 adapter->mega_buffer, adapter->buf_dma_handle);
4526 out_host_put:
4527 scsi_host_put(host);
4528 out_iounmap:
4529 if (flag & BOARD_MEMMAP)
4530 iounmap((void *)mega_baseport);
4531 out_release_region:
4532 if (flag & BOARD_MEMMAP)
4533 release_mem_region(tbase, 128);
4534 else
4535 release_region(mega_baseport, 16);
4536 out_disable_device:
4537 pci_disable_device(pdev);
4538 out:
4539 return error;
4540}
4541
4542static void
4543__megaraid_shutdown(adapter_t *adapter)
4544{
4545 u_char raw_mbox[sizeof(struct mbox_out)];
4546 mbox_t *mbox = (mbox_t *)raw_mbox;
4547 int i;
4548
4549 /* Flush adapter cache */
4550 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4551 raw_mbox[0] = FLUSH_ADAPTER;
4552
4553 free_irq(adapter->host->irq, adapter);
4554
4555 /* Issue a blocking (interrupts disabled) command to the card */
4556 issue_scb_block(adapter, raw_mbox);
4557
4558 /* Flush disks cache */
4559 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4560 raw_mbox[0] = FLUSH_SYSTEM;
4561
4562 /* Issue a blocking (interrupts disabled) command to the card */
4563 issue_scb_block(adapter, raw_mbox);
4564
4565 if (atomic_read(&adapter->pend_cmds) > 0)
4566 dev_warn(&adapter->dev->dev, "pending commands!!\n");
4567
4568 /*
4569 * Have a delibrate delay to make sure all the caches are
4570 * actually flushed.
4571 */
4572 for (i = 0; i <= 10; i++)
4573 mdelay(1000);
4574}
4575
4576static void
4577megaraid_remove_one(struct pci_dev *pdev)
4578{
4579 struct Scsi_Host *host = pci_get_drvdata(pdev);
4580 adapter_t *adapter = (adapter_t *)host->hostdata;
4581
4582 scsi_remove_host(host);
4583
4584 __megaraid_shutdown(adapter);
4585
4586 /* Free our resources */
4587 if (adapter->flag & BOARD_MEMMAP) {
4588 iounmap((void *)adapter->base);
4589 release_mem_region(adapter->host->base, 128);
4590 } else
4591 release_region(adapter->base, 16);
4592
4593 mega_free_sgl(adapter);
4594
4595#ifdef CONFIG_PROC_FS
4596 if (adapter->controller_proc_dir_entry) {
4597 remove_proc_entry("stat", adapter->controller_proc_dir_entry);
4598 remove_proc_entry("config",
4599 adapter->controller_proc_dir_entry);
4600 remove_proc_entry("mailbox",
4601 adapter->controller_proc_dir_entry);
4602#if MEGA_HAVE_ENH_PROC
4603 remove_proc_entry("rebuild-rate",
4604 adapter->controller_proc_dir_entry);
4605 remove_proc_entry("battery-status",
4606 adapter->controller_proc_dir_entry);
4607
4608 remove_proc_entry("diskdrives-ch0",
4609 adapter->controller_proc_dir_entry);
4610 remove_proc_entry("diskdrives-ch1",
4611 adapter->controller_proc_dir_entry);
4612 remove_proc_entry("diskdrives-ch2",
4613 adapter->controller_proc_dir_entry);
4614 remove_proc_entry("diskdrives-ch3",
4615 adapter->controller_proc_dir_entry);
4616
4617 remove_proc_entry("raiddrives-0-9",
4618 adapter->controller_proc_dir_entry);
4619 remove_proc_entry("raiddrives-10-19",
4620 adapter->controller_proc_dir_entry);
4621 remove_proc_entry("raiddrives-20-29",
4622 adapter->controller_proc_dir_entry);
4623 remove_proc_entry("raiddrives-30-39",
4624 adapter->controller_proc_dir_entry);
4625#endif
4626 {
4627 char buf[12] = { 0 };
4628 sprintf(buf, "hba%d", adapter->host->host_no);
4629 remove_proc_entry(buf, mega_proc_dir_entry);
4630 }
4631 }
4632#endif
4633
4634 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4635 adapter->mega_buffer, adapter->buf_dma_handle);
4636 kfree(adapter->scb_list);
4637 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4638 adapter->una_mbox64, adapter->una_mbox64_dma);
4639
4640 scsi_host_put(host);
4641 pci_disable_device(pdev);
4642
4643 hba_count--;
4644}
4645
4646static void
4647megaraid_shutdown(struct pci_dev *pdev)
4648{
4649 struct Scsi_Host *host = pci_get_drvdata(pdev);
4650 adapter_t *adapter = (adapter_t *)host->hostdata;
4651
4652 __megaraid_shutdown(adapter);
4653}
4654
4655static struct pci_device_id megaraid_pci_tbl[] = {
4656 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
4657 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4658 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
4659 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4660 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
4661 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4662 {0,}
4663};
4664MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
4665
4666static struct pci_driver megaraid_pci_driver = {
4667 .name = "megaraid_legacy",
4668 .id_table = megaraid_pci_tbl,
4669 .probe = megaraid_probe_one,
4670 .remove = megaraid_remove_one,
4671 .shutdown = megaraid_shutdown,
4672};
4673
4674static int __init megaraid_init(void)
4675{
4676 int error;
4677
4678 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
4679 max_cmd_per_lun = MAX_CMD_PER_LUN;
4680 if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
4681 max_mbox_busy_wait = MBOX_BUSY_WAIT;
4682
4683#ifdef CONFIG_PROC_FS
4684 mega_proc_dir_entry = proc_mkdir("megaraid", NULL);
4685 if (!mega_proc_dir_entry) {
4686 printk(KERN_WARNING
4687 "megaraid: failed to create megaraid root\n");
4688 }
4689#endif
4690 error = pci_register_driver(&megaraid_pci_driver);
4691 if (error) {
4692#ifdef CONFIG_PROC_FS
4693 remove_proc_entry("megaraid", NULL);
4694#endif
4695 return error;
4696 }
4697
4698 /*
4699 * Register the driver as a character device, for applications
4700 * to access it for ioctls.
4701 * First argument (major) to register_chrdev implies a dynamic
4702 * major number allocation.
4703 */
4704 major = register_chrdev(0, "megadev_legacy", &megadev_fops);
4705 if (!major) {
4706 printk(KERN_WARNING
4707 "megaraid: failed to register char device\n");
4708 }
4709
4710 return 0;
4711}
4712
4713static void __exit megaraid_exit(void)
4714{
4715 /*
4716 * Unregister the character device interface to the driver.
4717 */
4718 unregister_chrdev(major, "megadev_legacy");
4719
4720 pci_unregister_driver(&megaraid_pci_driver);
4721
4722#ifdef CONFIG_PROC_FS
4723 remove_proc_entry("megaraid", NULL);
4724#endif
4725}
4726
4727module_init(megaraid_init);
4728module_exit(megaraid_exit);
4729
4730/* vi: set ts=8 sw=8 tw=78: */
1/*
2 *
3 * Linux MegaRAID device driver
4 *
5 * Copyright (c) 2002 LSI Logic Corporation.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
11 *
12 * Copyright (c) 2002 Red Hat, Inc. All rights reserved.
13 * - fixes
14 * - speed-ups (list handling fixes, issued_list, optimizations.)
15 * - lots of cleanups.
16 *
17 * Copyright (c) 2003 Christoph Hellwig <hch@lst.de>
18 * - new-style, hotplug-aware pci probing and scsi registration
19 *
20 * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju
21 * <Seokmann.Ju@lsil.com>
22 *
23 * Description: Linux device driver for LSI Logic MegaRAID controller
24 *
25 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493
26 * 518, 520, 531, 532
27 *
28 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,
29 * and others. Please send updates to the mailing list
30 * linux-scsi@vger.kernel.org .
31 *
32 */
33
34#include <linux/mm.h>
35#include <linux/fs.h>
36#include <linux/blkdev.h>
37#include <linux/uaccess.h>
38#include <asm/io.h>
39#include <linux/completion.h>
40#include <linux/delay.h>
41#include <linux/proc_fs.h>
42#include <linux/seq_file.h>
43#include <linux/reboot.h>
44#include <linux/module.h>
45#include <linux/list.h>
46#include <linux/interrupt.h>
47#include <linux/pci.h>
48#include <linux/init.h>
49#include <linux/dma-mapping.h>
50#include <linux/mutex.h>
51#include <linux/slab.h>
52#include <scsi/scsicam.h>
53
54#include "scsi.h"
55#include <scsi/scsi_host.h>
56
57#include "megaraid.h"
58
59#define MEGARAID_MODULE_VERSION "2.00.4"
60
61MODULE_AUTHOR ("sju@lsil.com");
62MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver");
63MODULE_LICENSE ("GPL");
64MODULE_VERSION(MEGARAID_MODULE_VERSION);
65
66static DEFINE_MUTEX(megadev_mutex);
67static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
68module_param(max_cmd_per_lun, uint, 0);
69MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)");
70
71static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
72module_param(max_sectors_per_io, ushort, 0);
73MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
74
75
76static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
77module_param(max_mbox_busy_wait, ushort, 0);
78MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
79
80#define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20)
81#define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C)
82#define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20)
83#define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C)
84
85/*
86 * Global variables
87 */
88
89static int hba_count;
90static adapter_t *hba_soft_state[MAX_CONTROLLERS];
91static struct proc_dir_entry *mega_proc_dir_entry;
92
93/* For controller re-ordering */
94static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
95
96static long
97megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
98
99/*
100 * The File Operations structure for the serial/ioctl interface of the driver
101 */
102static const struct file_operations megadev_fops = {
103 .owner = THIS_MODULE,
104 .unlocked_ioctl = megadev_unlocked_ioctl,
105 .open = megadev_open,
106 .llseek = noop_llseek,
107};
108
109/*
110 * Array to structures for storing the information about the controllers. This
111 * information is sent to the user level applications, when they do an ioctl
112 * for this information.
113 */
114static struct mcontroller mcontroller[MAX_CONTROLLERS];
115
116/* The current driver version */
117static u32 driver_ver = 0x02000000;
118
119/* major number used by the device for character interface */
120static int major;
121
122#define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)
123
124
125/*
126 * Debug variable to print some diagnostic messages
127 */
128static int trace_level;
129
130/**
131 * mega_setup_mailbox()
132 * @adapter - pointer to our soft state
133 *
134 * Allocates a 8 byte aligned memory for the handshake mailbox.
135 */
136static int
137mega_setup_mailbox(adapter_t *adapter)
138{
139 unsigned long align;
140
141 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev,
142 sizeof(mbox64_t), &adapter->una_mbox64_dma);
143
144 if( !adapter->una_mbox64 ) return -1;
145
146 adapter->mbox = &adapter->una_mbox64->mbox;
147
148 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
149 (~0UL ^ 0xFUL));
150
151 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
152
153 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
154
155 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
156
157 /*
158 * Register the mailbox if the controller is an io-mapped controller
159 */
160 if( adapter->flag & BOARD_IOMAP ) {
161
162 outb(adapter->mbox_dma & 0xFF,
163 adapter->host->io_port + MBOX_PORT0);
164
165 outb((adapter->mbox_dma >> 8) & 0xFF,
166 adapter->host->io_port + MBOX_PORT1);
167
168 outb((adapter->mbox_dma >> 16) & 0xFF,
169 adapter->host->io_port + MBOX_PORT2);
170
171 outb((adapter->mbox_dma >> 24) & 0xFF,
172 adapter->host->io_port + MBOX_PORT3);
173
174 outb(ENABLE_MBOX_BYTE,
175 adapter->host->io_port + ENABLE_MBOX_REGION);
176
177 irq_ack(adapter);
178
179 irq_enable(adapter);
180 }
181
182 return 0;
183}
184
185
186/*
187 * mega_query_adapter()
188 * @adapter - pointer to our soft state
189 *
190 * Issue the adapter inquiry commands to the controller and find out
191 * information and parameter about the devices attached
192 */
193static int
194mega_query_adapter(adapter_t *adapter)
195{
196 dma_addr_t prod_info_dma_handle;
197 mega_inquiry3 *inquiry3;
198 u8 raw_mbox[sizeof(struct mbox_out)];
199 mbox_t *mbox;
200 int retval;
201
202 /* Initialize adapter inquiry mailbox */
203
204 mbox = (mbox_t *)raw_mbox;
205
206 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
207 memset(&mbox->m_out, 0, sizeof(raw_mbox));
208
209 /*
210 * Try to issue Inquiry3 command
211 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
212 * update enquiry3 structure
213 */
214 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
215
216 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
217
218 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
219 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */
220 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */
221
222 /* Issue a blocking command to the card */
223 if ((retval = issue_scb_block(adapter, raw_mbox))) {
224 /* the adapter does not support 40ld */
225
226 mraid_ext_inquiry *ext_inq;
227 mraid_inquiry *inq;
228 dma_addr_t dma_handle;
229
230 ext_inq = pci_alloc_consistent(adapter->dev,
231 sizeof(mraid_ext_inquiry), &dma_handle);
232
233 if( ext_inq == NULL ) return -1;
234
235 inq = &ext_inq->raid_inq;
236
237 mbox->m_out.xferaddr = (u32)dma_handle;
238
239 /*issue old 0x04 command to adapter */
240 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
241
242 issue_scb_block(adapter, raw_mbox);
243
244 /*
245 * update Enquiry3 and ProductInfo structures with
246 * mraid_inquiry structure
247 */
248 mega_8_to_40ld(inq, inquiry3,
249 (mega_product_info *)&adapter->product_info);
250
251 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
252 ext_inq, dma_handle);
253
254 } else { /*adapter supports 40ld */
255 adapter->flag |= BOARD_40LD;
256
257 /*
258 * get product_info, which is static information and will be
259 * unchanged
260 */
261 prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
262 &adapter->product_info,
263 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
264
265 mbox->m_out.xferaddr = prod_info_dma_handle;
266
267 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
268 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */
269
270 if ((retval = issue_scb_block(adapter, raw_mbox)))
271 dev_warn(&adapter->dev->dev,
272 "Product_info cmd failed with error: %d\n",
273 retval);
274
275 pci_unmap_single(adapter->dev, prod_info_dma_handle,
276 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
277 }
278
279
280 /*
281 * kernel scans the channels from 0 to <= max_channel
282 */
283 adapter->host->max_channel =
284 adapter->product_info.nchannels + NVIRT_CHAN -1;
285
286 adapter->host->max_id = 16; /* max targets per channel */
287
288 adapter->host->max_lun = 7; /* Up to 7 luns for non disk devices */
289
290 adapter->host->cmd_per_lun = max_cmd_per_lun;
291
292 adapter->numldrv = inquiry3->num_ldrv;
293
294 adapter->max_cmds = adapter->product_info.max_commands;
295
296 if(adapter->max_cmds > MAX_COMMANDS)
297 adapter->max_cmds = MAX_COMMANDS;
298
299 adapter->host->can_queue = adapter->max_cmds - 1;
300
301 /*
302 * Get the maximum number of scatter-gather elements supported by this
303 * firmware
304 */
305 mega_get_max_sgl(adapter);
306
307 adapter->host->sg_tablesize = adapter->sglen;
308
309 /* use HP firmware and bios version encoding
310 Note: fw_version[0|1] and bios_version[0|1] were originally shifted
311 right 8 bits making them zero. This 0 value was hardcoded to fix
312 sparse warnings. */
313 if (adapter->product_info.subsysvid == PCI_VENDOR_ID_HP) {
314 snprintf(adapter->fw_version, sizeof(adapter->fw_version),
315 "%c%d%d.%d%d",
316 adapter->product_info.fw_version[2],
317 0,
318 adapter->product_info.fw_version[1] & 0x0f,
319 0,
320 adapter->product_info.fw_version[0] & 0x0f);
321 snprintf(adapter->bios_version, sizeof(adapter->fw_version),
322 "%c%d%d.%d%d",
323 adapter->product_info.bios_version[2],
324 0,
325 adapter->product_info.bios_version[1] & 0x0f,
326 0,
327 adapter->product_info.bios_version[0] & 0x0f);
328 } else {
329 memcpy(adapter->fw_version,
330 (char *)adapter->product_info.fw_version, 4);
331 adapter->fw_version[4] = 0;
332
333 memcpy(adapter->bios_version,
334 (char *)adapter->product_info.bios_version, 4);
335
336 adapter->bios_version[4] = 0;
337 }
338
339 dev_notice(&adapter->dev->dev, "[%s:%s] detected %d logical drives\n",
340 adapter->fw_version, adapter->bios_version, adapter->numldrv);
341
342 /*
343 * Do we support extended (>10 bytes) cdbs
344 */
345 adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
346 if (adapter->support_ext_cdb)
347 dev_notice(&adapter->dev->dev, "supports extended CDBs\n");
348
349
350 return 0;
351}
352
353/**
354 * mega_runpendq()
355 * @adapter - pointer to our soft state
356 *
357 * Runs through the list of pending requests.
358 */
359static inline void
360mega_runpendq(adapter_t *adapter)
361{
362 if(!list_empty(&adapter->pending_list))
363 __mega_runpendq(adapter);
364}
365
366/*
367 * megaraid_queue()
368 * @scmd - Issue this scsi command
369 * @done - the callback hook into the scsi mid-layer
370 *
371 * The command queuing entry point for the mid-layer.
372 */
373static int
374megaraid_queue_lck(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *))
375{
376 adapter_t *adapter;
377 scb_t *scb;
378 int busy=0;
379 unsigned long flags;
380
381 adapter = (adapter_t *)scmd->device->host->hostdata;
382
383 scmd->scsi_done = done;
384
385
386 /*
387 * Allocate and build a SCB request
388 * busy flag will be set if mega_build_cmd() command could not
389 * allocate scb. We will return non-zero status in that case.
390 * NOTE: scb can be null even though certain commands completed
391 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
392 * return 0 in that case.
393 */
394
395 spin_lock_irqsave(&adapter->lock, flags);
396 scb = mega_build_cmd(adapter, scmd, &busy);
397 if (!scb)
398 goto out;
399
400 scb->state |= SCB_PENDQ;
401 list_add_tail(&scb->list, &adapter->pending_list);
402
403 /*
404 * Check if the HBA is in quiescent state, e.g., during a
405 * delete logical drive opertion. If it is, don't run
406 * the pending_list.
407 */
408 if (atomic_read(&adapter->quiescent) == 0)
409 mega_runpendq(adapter);
410
411 busy = 0;
412 out:
413 spin_unlock_irqrestore(&adapter->lock, flags);
414 return busy;
415}
416
417static DEF_SCSI_QCMD(megaraid_queue)
418
419/**
420 * mega_allocate_scb()
421 * @adapter - pointer to our soft state
422 * @cmd - scsi command from the mid-layer
423 *
424 * Allocate a SCB structure. This is the central structure for controller
425 * commands.
426 */
427static inline scb_t *
428mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd)
429{
430 struct list_head *head = &adapter->free_list;
431 scb_t *scb;
432
433 /* Unlink command from Free List */
434 if( !list_empty(head) ) {
435
436 scb = list_entry(head->next, scb_t, list);
437
438 list_del_init(head->next);
439
440 scb->state = SCB_ACTIVE;
441 scb->cmd = cmd;
442 scb->dma_type = MEGA_DMA_TYPE_NONE;
443
444 return scb;
445 }
446
447 return NULL;
448}
449
450/**
451 * mega_get_ldrv_num()
452 * @adapter - pointer to our soft state
453 * @cmd - scsi mid layer command
454 * @channel - channel on the controller
455 *
456 * Calculate the logical drive number based on the information in scsi command
457 * and the channel number.
458 */
459static inline int
460mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel)
461{
462 int tgt;
463 int ldrv_num;
464
465 tgt = cmd->device->id;
466
467 if ( tgt > adapter->this_id )
468 tgt--; /* we do not get inquires for initiator id */
469
470 ldrv_num = (channel * 15) + tgt;
471
472
473 /*
474 * If we have a logical drive with boot enabled, project it first
475 */
476 if( adapter->boot_ldrv_enabled ) {
477 if( ldrv_num == 0 ) {
478 ldrv_num = adapter->boot_ldrv;
479 }
480 else {
481 if( ldrv_num <= adapter->boot_ldrv ) {
482 ldrv_num--;
483 }
484 }
485 }
486
487 /*
488 * If "delete logical drive" feature is enabled on this controller.
489 * Do only if at least one delete logical drive operation was done.
490 *
491 * Also, after logical drive deletion, instead of logical drive number,
492 * the value returned should be 0x80+logical drive id.
493 *
494 * These is valid only for IO commands.
495 */
496
497 if (adapter->support_random_del && adapter->read_ldidmap )
498 switch (cmd->cmnd[0]) {
499 case READ_6: /* fall through */
500 case WRITE_6: /* fall through */
501 case READ_10: /* fall through */
502 case WRITE_10:
503 ldrv_num += 0x80;
504 }
505
506 return ldrv_num;
507}
508
509/**
510 * mega_build_cmd()
511 * @adapter - pointer to our soft state
512 * @cmd - Prepare using this scsi command
513 * @busy - busy flag if no resources
514 *
515 * Prepares a command and scatter gather list for the controller. This routine
516 * also finds out if the commands is intended for a logical drive or a
517 * physical device and prepares the controller command accordingly.
518 *
519 * We also re-order the logical drives and physical devices based on their
520 * boot settings.
521 */
522static scb_t *
523mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
524{
525 mega_ext_passthru *epthru;
526 mega_passthru *pthru;
527 scb_t *scb;
528 mbox_t *mbox;
529 u32 seg;
530 char islogical;
531 int max_ldrv_num;
532 int channel = 0;
533 int target = 0;
534 int ldrv_num = 0; /* logical drive number */
535
536 /*
537 * We know what channels our logical drives are on - mega_find_card()
538 */
539 islogical = adapter->logdrv_chan[cmd->device->channel];
540
541 /*
542 * The theory: If physical drive is chosen for boot, all the physical
543 * devices are exported before the logical drives, otherwise physical
544 * devices are pushed after logical drives, in which case - Kernel sees
545 * the physical devices on virtual channel which is obviously converted
546 * to actual channel on the HBA.
547 */
548 if( adapter->boot_pdrv_enabled ) {
549 if( islogical ) {
550 /* logical channel */
551 channel = cmd->device->channel -
552 adapter->product_info.nchannels;
553 }
554 else {
555 /* this is physical channel */
556 channel = cmd->device->channel;
557 target = cmd->device->id;
558
559 /*
560 * boot from a physical disk, that disk needs to be
561 * exposed first IF both the channels are SCSI, then
562 * booting from the second channel is not allowed.
563 */
564 if( target == 0 ) {
565 target = adapter->boot_pdrv_tgt;
566 }
567 else if( target == adapter->boot_pdrv_tgt ) {
568 target = 0;
569 }
570 }
571 }
572 else {
573 if( islogical ) {
574 /* this is the logical channel */
575 channel = cmd->device->channel;
576 }
577 else {
578 /* physical channel */
579 channel = cmd->device->channel - NVIRT_CHAN;
580 target = cmd->device->id;
581 }
582 }
583
584
585 if(islogical) {
586
587 /* have just LUN 0 for each target on virtual channels */
588 if (cmd->device->lun) {
589 cmd->result = (DID_BAD_TARGET << 16);
590 cmd->scsi_done(cmd);
591 return NULL;
592 }
593
594 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
595
596
597 max_ldrv_num = (adapter->flag & BOARD_40LD) ?
598 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
599
600 /*
601 * max_ldrv_num increases by 0x80 if some logical drive was
602 * deleted.
603 */
604 if(adapter->read_ldidmap)
605 max_ldrv_num += 0x80;
606
607 if(ldrv_num > max_ldrv_num ) {
608 cmd->result = (DID_BAD_TARGET << 16);
609 cmd->scsi_done(cmd);
610 return NULL;
611 }
612
613 }
614 else {
615 if( cmd->device->lun > 7) {
616 /*
617 * Do not support lun >7 for physically accessed
618 * devices
619 */
620 cmd->result = (DID_BAD_TARGET << 16);
621 cmd->scsi_done(cmd);
622 return NULL;
623 }
624 }
625
626 /*
627 *
628 * Logical drive commands
629 *
630 */
631 if(islogical) {
632 switch (cmd->cmnd[0]) {
633 case TEST_UNIT_READY:
634#if MEGA_HAVE_CLUSTERING
635 /*
636 * Do we support clustering and is the support enabled
637 * If no, return success always
638 */
639 if( !adapter->has_cluster ) {
640 cmd->result = (DID_OK << 16);
641 cmd->scsi_done(cmd);
642 return NULL;
643 }
644
645 if(!(scb = mega_allocate_scb(adapter, cmd))) {
646 *busy = 1;
647 return NULL;
648 }
649
650 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
651 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
652 scb->raw_mbox[3] = ldrv_num;
653
654 scb->dma_direction = PCI_DMA_NONE;
655
656 return scb;
657#else
658 cmd->result = (DID_OK << 16);
659 cmd->scsi_done(cmd);
660 return NULL;
661#endif
662
663 case MODE_SENSE: {
664 char *buf;
665 struct scatterlist *sg;
666
667 sg = scsi_sglist(cmd);
668 buf = kmap_atomic(sg_page(sg)) + sg->offset;
669
670 memset(buf, 0, cmd->cmnd[4]);
671 kunmap_atomic(buf - sg->offset);
672
673 cmd->result = (DID_OK << 16);
674 cmd->scsi_done(cmd);
675 return NULL;
676 }
677
678 case READ_CAPACITY:
679 case INQUIRY:
680
681 if(!(adapter->flag & (1L << cmd->device->channel))) {
682
683 dev_notice(&adapter->dev->dev,
684 "scsi%d: scanning scsi channel %d "
685 "for logical drives\n",
686 adapter->host->host_no,
687 cmd->device->channel);
688
689 adapter->flag |= (1L << cmd->device->channel);
690 }
691
692 /* Allocate a SCB and initialize passthru */
693 if(!(scb = mega_allocate_scb(adapter, cmd))) {
694 *busy = 1;
695 return NULL;
696 }
697 pthru = scb->pthru;
698
699 mbox = (mbox_t *)scb->raw_mbox;
700 memset(mbox, 0, sizeof(scb->raw_mbox));
701 memset(pthru, 0, sizeof(mega_passthru));
702
703 pthru->timeout = 0;
704 pthru->ars = 1;
705 pthru->reqsenselen = 14;
706 pthru->islogical = 1;
707 pthru->logdrv = ldrv_num;
708 pthru->cdblen = cmd->cmd_len;
709 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
710
711 if( adapter->has_64bit_addr ) {
712 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
713 }
714 else {
715 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
716 }
717
718 scb->dma_direction = PCI_DMA_FROMDEVICE;
719
720 pthru->numsgelements = mega_build_sglist(adapter, scb,
721 &pthru->dataxferaddr, &pthru->dataxferlen);
722
723 mbox->m_out.xferaddr = scb->pthru_dma_addr;
724
725 return scb;
726
727 case READ_6:
728 case WRITE_6:
729 case READ_10:
730 case WRITE_10:
731 case READ_12:
732 case WRITE_12:
733
734 /* Allocate a SCB and initialize mailbox */
735 if(!(scb = mega_allocate_scb(adapter, cmd))) {
736 *busy = 1;
737 return NULL;
738 }
739 mbox = (mbox_t *)scb->raw_mbox;
740
741 memset(mbox, 0, sizeof(scb->raw_mbox));
742 mbox->m_out.logdrv = ldrv_num;
743
744 /*
745 * A little hack: 2nd bit is zero for all scsi read
746 * commands and is set for all scsi write commands
747 */
748 if( adapter->has_64bit_addr ) {
749 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
750 MEGA_MBOXCMD_LWRITE64:
751 MEGA_MBOXCMD_LREAD64 ;
752 }
753 else {
754 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
755 MEGA_MBOXCMD_LWRITE:
756 MEGA_MBOXCMD_LREAD ;
757 }
758
759 /*
760 * 6-byte READ(0x08) or WRITE(0x0A) cdb
761 */
762 if( cmd->cmd_len == 6 ) {
763 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
764 mbox->m_out.lba =
765 ((u32)cmd->cmnd[1] << 16) |
766 ((u32)cmd->cmnd[2] << 8) |
767 (u32)cmd->cmnd[3];
768
769 mbox->m_out.lba &= 0x1FFFFF;
770
771#if MEGA_HAVE_STATS
772 /*
773 * Take modulo 0x80, since the logical drive
774 * number increases by 0x80 when a logical
775 * drive was deleted
776 */
777 if (*cmd->cmnd == READ_6) {
778 adapter->nreads[ldrv_num%0x80]++;
779 adapter->nreadblocks[ldrv_num%0x80] +=
780 mbox->m_out.numsectors;
781 } else {
782 adapter->nwrites[ldrv_num%0x80]++;
783 adapter->nwriteblocks[ldrv_num%0x80] +=
784 mbox->m_out.numsectors;
785 }
786#endif
787 }
788
789 /*
790 * 10-byte READ(0x28) or WRITE(0x2A) cdb
791 */
792 if( cmd->cmd_len == 10 ) {
793 mbox->m_out.numsectors =
794 (u32)cmd->cmnd[8] |
795 ((u32)cmd->cmnd[7] << 8);
796 mbox->m_out.lba =
797 ((u32)cmd->cmnd[2] << 24) |
798 ((u32)cmd->cmnd[3] << 16) |
799 ((u32)cmd->cmnd[4] << 8) |
800 (u32)cmd->cmnd[5];
801
802#if MEGA_HAVE_STATS
803 if (*cmd->cmnd == READ_10) {
804 adapter->nreads[ldrv_num%0x80]++;
805 adapter->nreadblocks[ldrv_num%0x80] +=
806 mbox->m_out.numsectors;
807 } else {
808 adapter->nwrites[ldrv_num%0x80]++;
809 adapter->nwriteblocks[ldrv_num%0x80] +=
810 mbox->m_out.numsectors;
811 }
812#endif
813 }
814
815 /*
816 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
817 */
818 if( cmd->cmd_len == 12 ) {
819 mbox->m_out.lba =
820 ((u32)cmd->cmnd[2] << 24) |
821 ((u32)cmd->cmnd[3] << 16) |
822 ((u32)cmd->cmnd[4] << 8) |
823 (u32)cmd->cmnd[5];
824
825 mbox->m_out.numsectors =
826 ((u32)cmd->cmnd[6] << 24) |
827 ((u32)cmd->cmnd[7] << 16) |
828 ((u32)cmd->cmnd[8] << 8) |
829 (u32)cmd->cmnd[9];
830
831#if MEGA_HAVE_STATS
832 if (*cmd->cmnd == READ_12) {
833 adapter->nreads[ldrv_num%0x80]++;
834 adapter->nreadblocks[ldrv_num%0x80] +=
835 mbox->m_out.numsectors;
836 } else {
837 adapter->nwrites[ldrv_num%0x80]++;
838 adapter->nwriteblocks[ldrv_num%0x80] +=
839 mbox->m_out.numsectors;
840 }
841#endif
842 }
843
844 /*
845 * If it is a read command
846 */
847 if( (*cmd->cmnd & 0x0F) == 0x08 ) {
848 scb->dma_direction = PCI_DMA_FROMDEVICE;
849 }
850 else {
851 scb->dma_direction = PCI_DMA_TODEVICE;
852 }
853
854 /* Calculate Scatter-Gather info */
855 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
856 (u32 *)&mbox->m_out.xferaddr, &seg);
857
858 return scb;
859
860#if MEGA_HAVE_CLUSTERING
861 case RESERVE: /* Fall through */
862 case RELEASE:
863
864 /*
865 * Do we support clustering and is the support enabled
866 */
867 if( ! adapter->has_cluster ) {
868
869 cmd->result = (DID_BAD_TARGET << 16);
870 cmd->scsi_done(cmd);
871 return NULL;
872 }
873
874 /* Allocate a SCB and initialize mailbox */
875 if(!(scb = mega_allocate_scb(adapter, cmd))) {
876 *busy = 1;
877 return NULL;
878 }
879
880 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
881 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
882 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
883
884 scb->raw_mbox[3] = ldrv_num;
885
886 scb->dma_direction = PCI_DMA_NONE;
887
888 return scb;
889#endif
890
891 default:
892 cmd->result = (DID_BAD_TARGET << 16);
893 cmd->scsi_done(cmd);
894 return NULL;
895 }
896 }
897
898 /*
899 * Passthru drive commands
900 */
901 else {
902 /* Allocate a SCB and initialize passthru */
903 if(!(scb = mega_allocate_scb(adapter, cmd))) {
904 *busy = 1;
905 return NULL;
906 }
907
908 mbox = (mbox_t *)scb->raw_mbox;
909 memset(mbox, 0, sizeof(scb->raw_mbox));
910
911 if( adapter->support_ext_cdb ) {
912
913 epthru = mega_prepare_extpassthru(adapter, scb, cmd,
914 channel, target);
915
916 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
917
918 mbox->m_out.xferaddr = scb->epthru_dma_addr;
919
920 }
921 else {
922
923 pthru = mega_prepare_passthru(adapter, scb, cmd,
924 channel, target);
925
926 /* Initialize mailbox */
927 if( adapter->has_64bit_addr ) {
928 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
929 }
930 else {
931 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
932 }
933
934 mbox->m_out.xferaddr = scb->pthru_dma_addr;
935
936 }
937 return scb;
938 }
939 return NULL;
940}
941
942
943/**
944 * mega_prepare_passthru()
945 * @adapter - pointer to our soft state
946 * @scb - our scsi control block
947 * @cmd - scsi command from the mid-layer
948 * @channel - actual channel on the controller
949 * @target - actual id on the controller.
950 *
951 * prepare a command for the scsi physical devices.
952 */
953static mega_passthru *
954mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
955 int channel, int target)
956{
957 mega_passthru *pthru;
958
959 pthru = scb->pthru;
960 memset(pthru, 0, sizeof (mega_passthru));
961
962 /* 0=6sec/1=60sec/2=10min/3=3hrs */
963 pthru->timeout = 2;
964
965 pthru->ars = 1;
966 pthru->reqsenselen = 14;
967 pthru->islogical = 0;
968
969 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
970
971 pthru->target = (adapter->flag & BOARD_40LD) ?
972 (channel << 4) | target : target;
973
974 pthru->cdblen = cmd->cmd_len;
975 pthru->logdrv = cmd->device->lun;
976
977 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
978
979 /* Not sure about the direction */
980 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
981
982 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
983 switch (cmd->cmnd[0]) {
984 case INQUIRY:
985 case READ_CAPACITY:
986 if(!(adapter->flag & (1L << cmd->device->channel))) {
987
988 dev_notice(&adapter->dev->dev,
989 "scsi%d: scanning scsi channel %d [P%d] "
990 "for physical devices\n",
991 adapter->host->host_no,
992 cmd->device->channel, channel);
993
994 adapter->flag |= (1L << cmd->device->channel);
995 }
996 /* Fall through */
997 default:
998 pthru->numsgelements = mega_build_sglist(adapter, scb,
999 &pthru->dataxferaddr, &pthru->dataxferlen);
1000 break;
1001 }
1002 return pthru;
1003}
1004
1005
1006/**
1007 * mega_prepare_extpassthru()
1008 * @adapter - pointer to our soft state
1009 * @scb - our scsi control block
1010 * @cmd - scsi command from the mid-layer
1011 * @channel - actual channel on the controller
1012 * @target - actual id on the controller.
1013 *
1014 * prepare a command for the scsi physical devices. This rountine prepares
1015 * commands for devices which can take extended CDBs (>10 bytes)
1016 */
1017static mega_ext_passthru *
1018mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1019 int channel, int target)
1020{
1021 mega_ext_passthru *epthru;
1022
1023 epthru = scb->epthru;
1024 memset(epthru, 0, sizeof(mega_ext_passthru));
1025
1026 /* 0=6sec/1=60sec/2=10min/3=3hrs */
1027 epthru->timeout = 2;
1028
1029 epthru->ars = 1;
1030 epthru->reqsenselen = 14;
1031 epthru->islogical = 0;
1032
1033 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1034 epthru->target = (adapter->flag & BOARD_40LD) ?
1035 (channel << 4) | target : target;
1036
1037 epthru->cdblen = cmd->cmd_len;
1038 epthru->logdrv = cmd->device->lun;
1039
1040 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1041
1042 /* Not sure about the direction */
1043 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1044
1045 switch(cmd->cmnd[0]) {
1046 case INQUIRY:
1047 case READ_CAPACITY:
1048 if(!(adapter->flag & (1L << cmd->device->channel))) {
1049
1050 dev_notice(&adapter->dev->dev,
1051 "scsi%d: scanning scsi channel %d [P%d] "
1052 "for physical devices\n",
1053 adapter->host->host_no,
1054 cmd->device->channel, channel);
1055
1056 adapter->flag |= (1L << cmd->device->channel);
1057 }
1058 /* Fall through */
1059 default:
1060 epthru->numsgelements = mega_build_sglist(adapter, scb,
1061 &epthru->dataxferaddr, &epthru->dataxferlen);
1062 break;
1063 }
1064
1065 return epthru;
1066}
1067
1068static void
1069__mega_runpendq(adapter_t *adapter)
1070{
1071 scb_t *scb;
1072 struct list_head *pos, *next;
1073
1074 /* Issue any pending commands to the card */
1075 list_for_each_safe(pos, next, &adapter->pending_list) {
1076
1077 scb = list_entry(pos, scb_t, list);
1078
1079 if( !(scb->state & SCB_ISSUED) ) {
1080
1081 if( issue_scb(adapter, scb) != 0 )
1082 return;
1083 }
1084 }
1085
1086 return;
1087}
1088
1089
1090/**
1091 * issue_scb()
1092 * @adapter - pointer to our soft state
1093 * @scb - scsi control block
1094 *
1095 * Post a command to the card if the mailbox is available, otherwise return
1096 * busy. We also take the scb from the pending list if the mailbox is
1097 * available.
1098 */
1099static int
1100issue_scb(adapter_t *adapter, scb_t *scb)
1101{
1102 volatile mbox64_t *mbox64 = adapter->mbox64;
1103 volatile mbox_t *mbox = adapter->mbox;
1104 unsigned int i = 0;
1105
1106 if(unlikely(mbox->m_in.busy)) {
1107 do {
1108 udelay(1);
1109 i++;
1110 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1111
1112 if(mbox->m_in.busy) return -1;
1113 }
1114
1115 /* Copy mailbox data into host structure */
1116 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1117 sizeof(struct mbox_out));
1118
1119 mbox->m_out.cmdid = scb->idx; /* Set cmdid */
1120 mbox->m_in.busy = 1; /* Set busy */
1121
1122
1123 /*
1124 * Increment the pending queue counter
1125 */
1126 atomic_inc(&adapter->pend_cmds);
1127
1128 switch (mbox->m_out.cmd) {
1129 case MEGA_MBOXCMD_LREAD64:
1130 case MEGA_MBOXCMD_LWRITE64:
1131 case MEGA_MBOXCMD_PASSTHRU64:
1132 case MEGA_MBOXCMD_EXTPTHRU:
1133 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1134 mbox64->xfer_segment_hi = 0;
1135 mbox->m_out.xferaddr = 0xFFFFFFFF;
1136 break;
1137 default:
1138 mbox64->xfer_segment_lo = 0;
1139 mbox64->xfer_segment_hi = 0;
1140 }
1141
1142 /*
1143 * post the command
1144 */
1145 scb->state |= SCB_ISSUED;
1146
1147 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1148 mbox->m_in.poll = 0;
1149 mbox->m_in.ack = 0;
1150 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1151 }
1152 else {
1153 irq_enable(adapter);
1154 issue_command(adapter);
1155 }
1156
1157 return 0;
1158}
1159
1160/*
1161 * Wait until the controller's mailbox is available
1162 */
1163static inline int
1164mega_busywait_mbox (adapter_t *adapter)
1165{
1166 if (adapter->mbox->m_in.busy)
1167 return __mega_busywait_mbox(adapter);
1168 return 0;
1169}
1170
1171/**
1172 * issue_scb_block()
1173 * @adapter - pointer to our soft state
1174 * @raw_mbox - the mailbox
1175 *
1176 * Issue a scb in synchronous and non-interrupt mode
1177 */
1178static int
1179issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1180{
1181 volatile mbox64_t *mbox64 = adapter->mbox64;
1182 volatile mbox_t *mbox = adapter->mbox;
1183 u8 byte;
1184
1185 /* Wait until mailbox is free */
1186 if(mega_busywait_mbox (adapter))
1187 goto bug_blocked_mailbox;
1188
1189 /* Copy mailbox data into host structure */
1190 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1191 mbox->m_out.cmdid = 0xFE;
1192 mbox->m_in.busy = 1;
1193
1194 switch (raw_mbox[0]) {
1195 case MEGA_MBOXCMD_LREAD64:
1196 case MEGA_MBOXCMD_LWRITE64:
1197 case MEGA_MBOXCMD_PASSTHRU64:
1198 case MEGA_MBOXCMD_EXTPTHRU:
1199 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1200 mbox64->xfer_segment_hi = 0;
1201 mbox->m_out.xferaddr = 0xFFFFFFFF;
1202 break;
1203 default:
1204 mbox64->xfer_segment_lo = 0;
1205 mbox64->xfer_segment_hi = 0;
1206 }
1207
1208 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1209 mbox->m_in.poll = 0;
1210 mbox->m_in.ack = 0;
1211 mbox->m_in.numstatus = 0xFF;
1212 mbox->m_in.status = 0xFF;
1213 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1214
1215 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1216 cpu_relax();
1217
1218 mbox->m_in.numstatus = 0xFF;
1219
1220 while( (volatile u8)mbox->m_in.poll != 0x77 )
1221 cpu_relax();
1222
1223 mbox->m_in.poll = 0;
1224 mbox->m_in.ack = 0x77;
1225
1226 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1227
1228 while(RDINDOOR(adapter) & 0x2)
1229 cpu_relax();
1230 }
1231 else {
1232 irq_disable(adapter);
1233 issue_command(adapter);
1234
1235 while (!((byte = irq_state(adapter)) & INTR_VALID))
1236 cpu_relax();
1237
1238 set_irq_state(adapter, byte);
1239 irq_enable(adapter);
1240 irq_ack(adapter);
1241 }
1242
1243 return mbox->m_in.status;
1244
1245bug_blocked_mailbox:
1246 dev_warn(&adapter->dev->dev, "Blocked mailbox......!!\n");
1247 udelay (1000);
1248 return -1;
1249}
1250
1251
1252/**
1253 * megaraid_isr_iomapped()
1254 * @irq - irq
1255 * @devp - pointer to our soft state
1256 *
1257 * Interrupt service routine for io-mapped controllers.
1258 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1259 * and service the completed commands.
1260 */
1261static irqreturn_t
1262megaraid_isr_iomapped(int irq, void *devp)
1263{
1264 adapter_t *adapter = devp;
1265 unsigned long flags;
1266 u8 status;
1267 u8 nstatus;
1268 u8 completed[MAX_FIRMWARE_STATUS];
1269 u8 byte;
1270 int handled = 0;
1271
1272
1273 /*
1274 * loop till F/W has more commands for us to complete.
1275 */
1276 spin_lock_irqsave(&adapter->lock, flags);
1277
1278 do {
1279 /* Check if a valid interrupt is pending */
1280 byte = irq_state(adapter);
1281 if( (byte & VALID_INTR_BYTE) == 0 ) {
1282 /*
1283 * No more pending commands
1284 */
1285 goto out_unlock;
1286 }
1287 set_irq_state(adapter, byte);
1288
1289 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1290 == 0xFF)
1291 cpu_relax();
1292 adapter->mbox->m_in.numstatus = 0xFF;
1293
1294 status = adapter->mbox->m_in.status;
1295
1296 /*
1297 * decrement the pending queue counter
1298 */
1299 atomic_sub(nstatus, &adapter->pend_cmds);
1300
1301 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1302 nstatus);
1303
1304 /* Acknowledge interrupt */
1305 irq_ack(adapter);
1306
1307 mega_cmd_done(adapter, completed, nstatus, status);
1308
1309 mega_rundoneq(adapter);
1310
1311 handled = 1;
1312
1313 /* Loop through any pending requests */
1314 if(atomic_read(&adapter->quiescent) == 0) {
1315 mega_runpendq(adapter);
1316 }
1317
1318 } while(1);
1319
1320 out_unlock:
1321
1322 spin_unlock_irqrestore(&adapter->lock, flags);
1323
1324 return IRQ_RETVAL(handled);
1325}
1326
1327
1328/**
1329 * megaraid_isr_memmapped()
1330 * @irq - irq
1331 * @devp - pointer to our soft state
1332 *
1333 * Interrupt service routine for memory-mapped controllers.
1334 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1335 * and service the completed commands.
1336 */
1337static irqreturn_t
1338megaraid_isr_memmapped(int irq, void *devp)
1339{
1340 adapter_t *adapter = devp;
1341 unsigned long flags;
1342 u8 status;
1343 u32 dword = 0;
1344 u8 nstatus;
1345 u8 completed[MAX_FIRMWARE_STATUS];
1346 int handled = 0;
1347
1348
1349 /*
1350 * loop till F/W has more commands for us to complete.
1351 */
1352 spin_lock_irqsave(&adapter->lock, flags);
1353
1354 do {
1355 /* Check if a valid interrupt is pending */
1356 dword = RDOUTDOOR(adapter);
1357 if(dword != 0x10001234) {
1358 /*
1359 * No more pending commands
1360 */
1361 goto out_unlock;
1362 }
1363 WROUTDOOR(adapter, 0x10001234);
1364
1365 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1366 == 0xFF) {
1367 cpu_relax();
1368 }
1369 adapter->mbox->m_in.numstatus = 0xFF;
1370
1371 status = adapter->mbox->m_in.status;
1372
1373 /*
1374 * decrement the pending queue counter
1375 */
1376 atomic_sub(nstatus, &adapter->pend_cmds);
1377
1378 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1379 nstatus);
1380
1381 /* Acknowledge interrupt */
1382 WRINDOOR(adapter, 0x2);
1383
1384 handled = 1;
1385
1386 while( RDINDOOR(adapter) & 0x02 )
1387 cpu_relax();
1388
1389 mega_cmd_done(adapter, completed, nstatus, status);
1390
1391 mega_rundoneq(adapter);
1392
1393 /* Loop through any pending requests */
1394 if(atomic_read(&adapter->quiescent) == 0) {
1395 mega_runpendq(adapter);
1396 }
1397
1398 } while(1);
1399
1400 out_unlock:
1401
1402 spin_unlock_irqrestore(&adapter->lock, flags);
1403
1404 return IRQ_RETVAL(handled);
1405}
1406/**
1407 * mega_cmd_done()
1408 * @adapter - pointer to our soft state
1409 * @completed - array of ids of completed commands
1410 * @nstatus - number of completed commands
1411 * @status - status of the last command completed
1412 *
1413 * Complete the commands and call the scsi mid-layer callback hooks.
1414 */
1415static void
1416mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1417{
1418 mega_ext_passthru *epthru = NULL;
1419 struct scatterlist *sgl;
1420 Scsi_Cmnd *cmd = NULL;
1421 mega_passthru *pthru = NULL;
1422 mbox_t *mbox = NULL;
1423 u8 c;
1424 scb_t *scb;
1425 int islogical;
1426 int cmdid;
1427 int i;
1428
1429 /*
1430 * for all the commands completed, call the mid-layer callback routine
1431 * and free the scb.
1432 */
1433 for( i = 0; i < nstatus; i++ ) {
1434
1435 cmdid = completed[i];
1436
1437 /*
1438 * Only free SCBs for the commands coming down from the
1439 * mid-layer, not for which were issued internally
1440 *
1441 * For internal command, restore the status returned by the
1442 * firmware so that user can interpret it.
1443 */
1444 if (cmdid == CMDID_INT_CMDS) {
1445 scb = &adapter->int_scb;
1446
1447 list_del_init(&scb->list);
1448 scb->state = SCB_FREE;
1449
1450 adapter->int_status = status;
1451 complete(&adapter->int_waitq);
1452 } else {
1453 scb = &adapter->scb_list[cmdid];
1454
1455 /*
1456 * Make sure f/w has completed a valid command
1457 */
1458 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1459 dev_crit(&adapter->dev->dev, "invalid command "
1460 "Id %d, scb->state:%x, scsi cmd:%p\n",
1461 cmdid, scb->state, scb->cmd);
1462
1463 continue;
1464 }
1465
1466 /*
1467 * Was a abort issued for this command
1468 */
1469 if( scb->state & SCB_ABORT ) {
1470
1471 dev_warn(&adapter->dev->dev,
1472 "aborted cmd [%x] complete\n",
1473 scb->idx);
1474
1475 scb->cmd->result = (DID_ABORT << 16);
1476
1477 list_add_tail(SCSI_LIST(scb->cmd),
1478 &adapter->completed_list);
1479
1480 mega_free_scb(adapter, scb);
1481
1482 continue;
1483 }
1484
1485 /*
1486 * Was a reset issued for this command
1487 */
1488 if( scb->state & SCB_RESET ) {
1489
1490 dev_warn(&adapter->dev->dev,
1491 "reset cmd [%x] complete\n",
1492 scb->idx);
1493
1494 scb->cmd->result = (DID_RESET << 16);
1495
1496 list_add_tail(SCSI_LIST(scb->cmd),
1497 &adapter->completed_list);
1498
1499 mega_free_scb (adapter, scb);
1500
1501 continue;
1502 }
1503
1504 cmd = scb->cmd;
1505 pthru = scb->pthru;
1506 epthru = scb->epthru;
1507 mbox = (mbox_t *)scb->raw_mbox;
1508
1509#if MEGA_HAVE_STATS
1510 {
1511
1512 int logdrv = mbox->m_out.logdrv;
1513
1514 islogical = adapter->logdrv_chan[cmd->channel];
1515 /*
1516 * Maintain an error counter for the logical drive.
1517 * Some application like SNMP agent need such
1518 * statistics
1519 */
1520 if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1521 cmd->cmnd[0] == READ_10 ||
1522 cmd->cmnd[0] == READ_12)) {
1523 /*
1524 * Logical drive number increases by 0x80 when
1525 * a logical drive is deleted
1526 */
1527 adapter->rd_errors[logdrv%0x80]++;
1528 }
1529
1530 if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1531 cmd->cmnd[0] == WRITE_10 ||
1532 cmd->cmnd[0] == WRITE_12)) {
1533 /*
1534 * Logical drive number increases by 0x80 when
1535 * a logical drive is deleted
1536 */
1537 adapter->wr_errors[logdrv%0x80]++;
1538 }
1539
1540 }
1541#endif
1542 }
1543
1544 /*
1545 * Do not return the presence of hard disk on the channel so,
1546 * inquiry sent, and returned data==hard disk or removable
1547 * hard disk and not logical, request should return failure! -
1548 * PJ
1549 */
1550 islogical = adapter->logdrv_chan[cmd->device->channel];
1551 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1552
1553 sgl = scsi_sglist(cmd);
1554 if( sg_page(sgl) ) {
1555 c = *(unsigned char *) sg_virt(&sgl[0]);
1556 } else {
1557 dev_warn(&adapter->dev->dev, "invalid sg\n");
1558 c = 0;
1559 }
1560
1561 if(IS_RAID_CH(adapter, cmd->device->channel) &&
1562 ((c & 0x1F ) == TYPE_DISK)) {
1563 status = 0xF0;
1564 }
1565 }
1566
1567 /* clear result; otherwise, success returns corrupt value */
1568 cmd->result = 0;
1569
1570 /* Convert MegaRAID status to Linux error code */
1571 switch (status) {
1572 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1573 cmd->result |= (DID_OK << 16);
1574 break;
1575
1576 case 0x02: /* ERROR_ABORTED, i.e.
1577 SCSI_STATUS_CHECK_CONDITION */
1578
1579 /* set sense_buffer and result fields */
1580 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1581 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1582
1583 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1584 14);
1585
1586 cmd->result = (DRIVER_SENSE << 24) |
1587 (DID_OK << 16) |
1588 (CHECK_CONDITION << 1);
1589 }
1590 else {
1591 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1592
1593 memcpy(cmd->sense_buffer,
1594 epthru->reqsensearea, 14);
1595
1596 cmd->result = (DRIVER_SENSE << 24) |
1597 (DID_OK << 16) |
1598 (CHECK_CONDITION << 1);
1599 } else {
1600 cmd->sense_buffer[0] = 0x70;
1601 cmd->sense_buffer[2] = ABORTED_COMMAND;
1602 cmd->result |= (CHECK_CONDITION << 1);
1603 }
1604 }
1605 break;
1606
1607 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.
1608 SCSI_STATUS_BUSY */
1609 cmd->result |= (DID_BUS_BUSY << 16) | status;
1610 break;
1611
1612 default:
1613#if MEGA_HAVE_CLUSTERING
1614 /*
1615 * If TEST_UNIT_READY fails, we know
1616 * MEGA_RESERVATION_STATUS failed
1617 */
1618 if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1619 cmd->result |= (DID_ERROR << 16) |
1620 (RESERVATION_CONFLICT << 1);
1621 }
1622 else
1623 /*
1624 * Error code returned is 1 if Reserve or Release
1625 * failed or the input parameter is invalid
1626 */
1627 if( status == 1 &&
1628 (cmd->cmnd[0] == RESERVE ||
1629 cmd->cmnd[0] == RELEASE) ) {
1630
1631 cmd->result |= (DID_ERROR << 16) |
1632 (RESERVATION_CONFLICT << 1);
1633 }
1634 else
1635#endif
1636 cmd->result |= (DID_BAD_TARGET << 16)|status;
1637 }
1638
1639 mega_free_scb(adapter, scb);
1640
1641 /* Add Scsi_Command to end of completed queue */
1642 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1643 }
1644}
1645
1646
1647/*
1648 * mega_runpendq()
1649 *
1650 * Run through the list of completed requests and finish it
1651 */
1652static void
1653mega_rundoneq (adapter_t *adapter)
1654{
1655 Scsi_Cmnd *cmd;
1656 struct list_head *pos;
1657
1658 list_for_each(pos, &adapter->completed_list) {
1659
1660 struct scsi_pointer* spos = (struct scsi_pointer *)pos;
1661
1662 cmd = list_entry(spos, Scsi_Cmnd, SCp);
1663 cmd->scsi_done(cmd);
1664 }
1665
1666 INIT_LIST_HEAD(&adapter->completed_list);
1667}
1668
1669
1670/*
1671 * Free a SCB structure
1672 * Note: We assume the scsi commands associated with this scb is not free yet.
1673 */
1674static void
1675mega_free_scb(adapter_t *adapter, scb_t *scb)
1676{
1677 switch( scb->dma_type ) {
1678
1679 case MEGA_DMA_TYPE_NONE:
1680 break;
1681
1682 case MEGA_SGLIST:
1683 scsi_dma_unmap(scb->cmd);
1684 break;
1685 default:
1686 break;
1687 }
1688
1689 /*
1690 * Remove from the pending list
1691 */
1692 list_del_init(&scb->list);
1693
1694 /* Link the scb back into free list */
1695 scb->state = SCB_FREE;
1696 scb->cmd = NULL;
1697
1698 list_add(&scb->list, &adapter->free_list);
1699}
1700
1701
1702static int
1703__mega_busywait_mbox (adapter_t *adapter)
1704{
1705 volatile mbox_t *mbox = adapter->mbox;
1706 long counter;
1707
1708 for (counter = 0; counter < 10000; counter++) {
1709 if (!mbox->m_in.busy)
1710 return 0;
1711 udelay(100);
1712 cond_resched();
1713 }
1714 return -1; /* give up after 1 second */
1715}
1716
1717/*
1718 * Copies data to SGLIST
1719 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1720 */
1721static int
1722mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1723{
1724 struct scatterlist *sg;
1725 Scsi_Cmnd *cmd;
1726 int sgcnt;
1727 int idx;
1728
1729 cmd = scb->cmd;
1730
1731 /*
1732 * Copy Scatter-Gather list info into controller structure.
1733 *
1734 * The number of sg elements returned must not exceed our limit
1735 */
1736 sgcnt = scsi_dma_map(cmd);
1737
1738 scb->dma_type = MEGA_SGLIST;
1739
1740 BUG_ON(sgcnt > adapter->sglen || sgcnt < 0);
1741
1742 *len = 0;
1743
1744 if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) {
1745 sg = scsi_sglist(cmd);
1746 scb->dma_h_bulkdata = sg_dma_address(sg);
1747 *buf = (u32)scb->dma_h_bulkdata;
1748 *len = sg_dma_len(sg);
1749 return 0;
1750 }
1751
1752 scsi_for_each_sg(cmd, sg, sgcnt, idx) {
1753 if (adapter->has_64bit_addr) {
1754 scb->sgl64[idx].address = sg_dma_address(sg);
1755 *len += scb->sgl64[idx].length = sg_dma_len(sg);
1756 } else {
1757 scb->sgl[idx].address = sg_dma_address(sg);
1758 *len += scb->sgl[idx].length = sg_dma_len(sg);
1759 }
1760 }
1761
1762 /* Reset pointer and length fields */
1763 *buf = scb->sgl_dma_addr;
1764
1765 /* Return count of SG requests */
1766 return sgcnt;
1767}
1768
1769
1770/*
1771 * mega_8_to_40ld()
1772 *
1773 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1774 * Enquiry3 structures for later use
1775 */
1776static void
1777mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1778 mega_product_info *product_info)
1779{
1780 int i;
1781
1782 product_info->max_commands = inquiry->adapter_info.max_commands;
1783 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1784 product_info->nchannels = inquiry->adapter_info.nchannels;
1785
1786 for (i = 0; i < 4; i++) {
1787 product_info->fw_version[i] =
1788 inquiry->adapter_info.fw_version[i];
1789
1790 product_info->bios_version[i] =
1791 inquiry->adapter_info.bios_version[i];
1792 }
1793 enquiry3->cache_flush_interval =
1794 inquiry->adapter_info.cache_flush_interval;
1795
1796 product_info->dram_size = inquiry->adapter_info.dram_size;
1797
1798 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1799
1800 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1801 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1802 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1803 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1804 }
1805
1806 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1807 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1808}
1809
1810static inline void
1811mega_free_sgl(adapter_t *adapter)
1812{
1813 scb_t *scb;
1814 int i;
1815
1816 for(i = 0; i < adapter->max_cmds; i++) {
1817
1818 scb = &adapter->scb_list[i];
1819
1820 if( scb->sgl64 ) {
1821 pci_free_consistent(adapter->dev,
1822 sizeof(mega_sgl64) * adapter->sglen,
1823 scb->sgl64,
1824 scb->sgl_dma_addr);
1825
1826 scb->sgl64 = NULL;
1827 }
1828
1829 if( scb->pthru ) {
1830 pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1831 scb->pthru, scb->pthru_dma_addr);
1832
1833 scb->pthru = NULL;
1834 }
1835
1836 if( scb->epthru ) {
1837 pci_free_consistent(adapter->dev,
1838 sizeof(mega_ext_passthru),
1839 scb->epthru, scb->epthru_dma_addr);
1840
1841 scb->epthru = NULL;
1842 }
1843
1844 }
1845}
1846
1847
1848/*
1849 * Get information about the card/driver
1850 */
1851const char *
1852megaraid_info(struct Scsi_Host *host)
1853{
1854 static char buffer[512];
1855 adapter_t *adapter;
1856
1857 adapter = (adapter_t *)host->hostdata;
1858
1859 sprintf (buffer,
1860 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1861 adapter->fw_version, adapter->product_info.max_commands,
1862 adapter->host->max_id, adapter->host->max_channel,
1863 (u32)adapter->host->max_lun);
1864 return buffer;
1865}
1866
1867/*
1868 * Abort a previous SCSI request. Only commands on the pending list can be
1869 * aborted. All the commands issued to the F/W must complete.
1870 */
1871static int
1872megaraid_abort(Scsi_Cmnd *cmd)
1873{
1874 adapter_t *adapter;
1875 int rval;
1876
1877 adapter = (adapter_t *)cmd->device->host->hostdata;
1878
1879 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1880
1881 /*
1882 * This is required here to complete any completed requests
1883 * to be communicated over to the mid layer.
1884 */
1885 mega_rundoneq(adapter);
1886
1887 return rval;
1888}
1889
1890
1891static int
1892megaraid_reset(struct scsi_cmnd *cmd)
1893{
1894 adapter_t *adapter;
1895 megacmd_t mc;
1896 int rval;
1897
1898 adapter = (adapter_t *)cmd->device->host->hostdata;
1899
1900#if MEGA_HAVE_CLUSTERING
1901 mc.cmd = MEGA_CLUSTER_CMD;
1902 mc.opcode = MEGA_RESET_RESERVATIONS;
1903
1904 if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1905 dev_warn(&adapter->dev->dev, "reservation reset failed\n");
1906 }
1907 else {
1908 dev_info(&adapter->dev->dev, "reservation reset\n");
1909 }
1910#endif
1911
1912 spin_lock_irq(&adapter->lock);
1913
1914 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
1915
1916 /*
1917 * This is required here to complete any completed requests
1918 * to be communicated over to the mid layer.
1919 */
1920 mega_rundoneq(adapter);
1921 spin_unlock_irq(&adapter->lock);
1922
1923 return rval;
1924}
1925
1926/**
1927 * megaraid_abort_and_reset()
1928 * @adapter - megaraid soft state
1929 * @cmd - scsi command to be aborted or reset
1930 * @aor - abort or reset flag
1931 *
1932 * Try to locate the scsi command in the pending queue. If found and is not
1933 * issued to the controller, abort/reset it. Otherwise return failure
1934 */
1935static int
1936megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
1937{
1938 struct list_head *pos, *next;
1939 scb_t *scb;
1940
1941 dev_warn(&adapter->dev->dev, "%s cmd=%x <c=%d t=%d l=%d>\n",
1942 (aor == SCB_ABORT)? "ABORTING":"RESET",
1943 cmd->cmnd[0], cmd->device->channel,
1944 cmd->device->id, (u32)cmd->device->lun);
1945
1946 if(list_empty(&adapter->pending_list))
1947 return FAILED;
1948
1949 list_for_each_safe(pos, next, &adapter->pending_list) {
1950
1951 scb = list_entry(pos, scb_t, list);
1952
1953 if (scb->cmd == cmd) { /* Found command */
1954
1955 scb->state |= aor;
1956
1957 /*
1958 * Check if this command has firmware ownership. If
1959 * yes, we cannot reset this command. Whenever f/w
1960 * completes this command, we will return appropriate
1961 * status from ISR.
1962 */
1963 if( scb->state & SCB_ISSUED ) {
1964
1965 dev_warn(&adapter->dev->dev,
1966 "%s[%x], fw owner\n",
1967 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1968 scb->idx);
1969
1970 return FAILED;
1971 }
1972 else {
1973
1974 /*
1975 * Not yet issued! Remove from the pending
1976 * list
1977 */
1978 dev_warn(&adapter->dev->dev,
1979 "%s-[%x], driver owner\n",
1980 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1981 scb->idx);
1982
1983 mega_free_scb(adapter, scb);
1984
1985 if( aor == SCB_ABORT ) {
1986 cmd->result = (DID_ABORT << 16);
1987 }
1988 else {
1989 cmd->result = (DID_RESET << 16);
1990 }
1991
1992 list_add_tail(SCSI_LIST(cmd),
1993 &adapter->completed_list);
1994
1995 return SUCCESS;
1996 }
1997 }
1998 }
1999
2000 return FAILED;
2001}
2002
2003static inline int
2004make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2005{
2006 *pdev = pci_alloc_dev(NULL);
2007
2008 if( *pdev == NULL ) return -1;
2009
2010 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2011
2012 if( pci_set_dma_mask(*pdev, DMA_BIT_MASK(32)) != 0 ) {
2013 kfree(*pdev);
2014 return -1;
2015 }
2016
2017 return 0;
2018}
2019
2020static inline void
2021free_local_pdev(struct pci_dev *pdev)
2022{
2023 kfree(pdev);
2024}
2025
2026/**
2027 * mega_allocate_inquiry()
2028 * @dma_handle - handle returned for dma address
2029 * @pdev - handle to pci device
2030 *
2031 * allocates memory for inquiry structure
2032 */
2033static inline void *
2034mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2035{
2036 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2037}
2038
2039
2040static inline void
2041mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2042{
2043 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2044}
2045
2046
2047#ifdef CONFIG_PROC_FS
2048/* Following code handles /proc fs */
2049
2050/**
2051 * proc_show_config()
2052 * @m - Synthetic file construction data
2053 * @v - File iterator
2054 *
2055 * Display configuration information about the controller.
2056 */
2057static int
2058proc_show_config(struct seq_file *m, void *v)
2059{
2060
2061 adapter_t *adapter = m->private;
2062
2063 seq_puts(m, MEGARAID_VERSION);
2064 if(adapter->product_info.product_name[0])
2065 seq_printf(m, "%s\n", adapter->product_info.product_name);
2066
2067 seq_puts(m, "Controller Type: ");
2068
2069 if( adapter->flag & BOARD_MEMMAP )
2070 seq_puts(m, "438/466/467/471/493/518/520/531/532\n");
2071 else
2072 seq_puts(m, "418/428/434\n");
2073
2074 if(adapter->flag & BOARD_40LD)
2075 seq_puts(m, "Controller Supports 40 Logical Drives\n");
2076
2077 if(adapter->flag & BOARD_64BIT)
2078 seq_puts(m, "Controller capable of 64-bit memory addressing\n");
2079 if( adapter->has_64bit_addr )
2080 seq_puts(m, "Controller using 64-bit memory addressing\n");
2081 else
2082 seq_puts(m, "Controller is not using 64-bit memory addressing\n");
2083
2084 seq_printf(m, "Base = %08lx, Irq = %d, ",
2085 adapter->base, adapter->host->irq);
2086
2087 seq_printf(m, "Logical Drives = %d, Channels = %d\n",
2088 adapter->numldrv, adapter->product_info.nchannels);
2089
2090 seq_printf(m, "Version =%s:%s, DRAM = %dMb\n",
2091 adapter->fw_version, adapter->bios_version,
2092 adapter->product_info.dram_size);
2093
2094 seq_printf(m, "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2095 adapter->product_info.max_commands, adapter->max_cmds);
2096
2097 seq_printf(m, "support_ext_cdb = %d\n", adapter->support_ext_cdb);
2098 seq_printf(m, "support_random_del = %d\n", adapter->support_random_del);
2099 seq_printf(m, "boot_ldrv_enabled = %d\n", adapter->boot_ldrv_enabled);
2100 seq_printf(m, "boot_ldrv = %d\n", adapter->boot_ldrv);
2101 seq_printf(m, "boot_pdrv_enabled = %d\n", adapter->boot_pdrv_enabled);
2102 seq_printf(m, "boot_pdrv_ch = %d\n", adapter->boot_pdrv_ch);
2103 seq_printf(m, "boot_pdrv_tgt = %d\n", adapter->boot_pdrv_tgt);
2104 seq_printf(m, "quiescent = %d\n",
2105 atomic_read(&adapter->quiescent));
2106 seq_printf(m, "has_cluster = %d\n", adapter->has_cluster);
2107
2108 seq_puts(m, "\nModule Parameters:\n");
2109 seq_printf(m, "max_cmd_per_lun = %d\n", max_cmd_per_lun);
2110 seq_printf(m, "max_sectors_per_io = %d\n", max_sectors_per_io);
2111 return 0;
2112}
2113
2114/**
2115 * proc_show_stat()
2116 * @m - Synthetic file construction data
2117 * @v - File iterator
2118 *
2119 * Display statistical information about the I/O activity.
2120 */
2121static int
2122proc_show_stat(struct seq_file *m, void *v)
2123{
2124 adapter_t *adapter = m->private;
2125#if MEGA_HAVE_STATS
2126 int i;
2127#endif
2128
2129 seq_puts(m, "Statistical Information for this controller\n");
2130 seq_printf(m, "pend_cmds = %d\n", atomic_read(&adapter->pend_cmds));
2131#if MEGA_HAVE_STATS
2132 for(i = 0; i < adapter->numldrv; i++) {
2133 seq_printf(m, "Logical Drive %d:\n", i);
2134 seq_printf(m, "\tReads Issued = %lu, Writes Issued = %lu\n",
2135 adapter->nreads[i], adapter->nwrites[i]);
2136 seq_printf(m, "\tSectors Read = %lu, Sectors Written = %lu\n",
2137 adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2138 seq_printf(m, "\tRead errors = %lu, Write errors = %lu\n\n",
2139 adapter->rd_errors[i], adapter->wr_errors[i]);
2140 }
2141#else
2142 seq_puts(m, "IO and error counters not compiled in driver.\n");
2143#endif
2144 return 0;
2145}
2146
2147
2148/**
2149 * proc_show_mbox()
2150 * @m - Synthetic file construction data
2151 * @v - File iterator
2152 *
2153 * Display mailbox information for the last command issued. This information
2154 * is good for debugging.
2155 */
2156static int
2157proc_show_mbox(struct seq_file *m, void *v)
2158{
2159 adapter_t *adapter = m->private;
2160 volatile mbox_t *mbox = adapter->mbox;
2161
2162 seq_puts(m, "Contents of Mail Box Structure\n");
2163 seq_printf(m, " Fw Command = 0x%02x\n", mbox->m_out.cmd);
2164 seq_printf(m, " Cmd Sequence = 0x%02x\n", mbox->m_out.cmdid);
2165 seq_printf(m, " No of Sectors= %04d\n", mbox->m_out.numsectors);
2166 seq_printf(m, " LBA = 0x%02x\n", mbox->m_out.lba);
2167 seq_printf(m, " DTA = 0x%08x\n", mbox->m_out.xferaddr);
2168 seq_printf(m, " Logical Drive= 0x%02x\n", mbox->m_out.logdrv);
2169 seq_printf(m, " No of SG Elmt= 0x%02x\n", mbox->m_out.numsgelements);
2170 seq_printf(m, " Busy = %01x\n", mbox->m_in.busy);
2171 seq_printf(m, " Status = 0x%02x\n", mbox->m_in.status);
2172 return 0;
2173}
2174
2175
2176/**
2177 * proc_show_rebuild_rate()
2178 * @m - Synthetic file construction data
2179 * @v - File iterator
2180 *
2181 * Display current rebuild rate
2182 */
2183static int
2184proc_show_rebuild_rate(struct seq_file *m, void *v)
2185{
2186 adapter_t *adapter = m->private;
2187 dma_addr_t dma_handle;
2188 caddr_t inquiry;
2189 struct pci_dev *pdev;
2190
2191 if( make_local_pdev(adapter, &pdev) != 0 )
2192 return 0;
2193
2194 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2195 goto free_pdev;
2196
2197 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2198 seq_puts(m, "Adapter inquiry failed.\n");
2199 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2200 goto free_inquiry;
2201 }
2202
2203 if( adapter->flag & BOARD_40LD )
2204 seq_printf(m, "Rebuild Rate: [%d%%]\n",
2205 ((mega_inquiry3 *)inquiry)->rebuild_rate);
2206 else
2207 seq_printf(m, "Rebuild Rate: [%d%%]\n",
2208 ((mraid_ext_inquiry *)
2209 inquiry)->raid_inq.adapter_info.rebuild_rate);
2210
2211free_inquiry:
2212 mega_free_inquiry(inquiry, dma_handle, pdev);
2213free_pdev:
2214 free_local_pdev(pdev);
2215 return 0;
2216}
2217
2218
2219/**
2220 * proc_show_battery()
2221 * @m - Synthetic file construction data
2222 * @v - File iterator
2223 *
2224 * Display information about the battery module on the controller.
2225 */
2226static int
2227proc_show_battery(struct seq_file *m, void *v)
2228{
2229 adapter_t *adapter = m->private;
2230 dma_addr_t dma_handle;
2231 caddr_t inquiry;
2232 struct pci_dev *pdev;
2233 u8 battery_status;
2234
2235 if( make_local_pdev(adapter, &pdev) != 0 )
2236 return 0;
2237
2238 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2239 goto free_pdev;
2240
2241 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2242 seq_puts(m, "Adapter inquiry failed.\n");
2243 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2244 goto free_inquiry;
2245 }
2246
2247 if( adapter->flag & BOARD_40LD ) {
2248 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2249 }
2250 else {
2251 battery_status = ((mraid_ext_inquiry *)inquiry)->
2252 raid_inq.adapter_info.battery_status;
2253 }
2254
2255 /*
2256 * Decode the battery status
2257 */
2258 seq_printf(m, "Battery Status:[%d]", battery_status);
2259
2260 if(battery_status == MEGA_BATT_CHARGE_DONE)
2261 seq_puts(m, " Charge Done");
2262
2263 if(battery_status & MEGA_BATT_MODULE_MISSING)
2264 seq_puts(m, " Module Missing");
2265
2266 if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2267 seq_puts(m, " Low Voltage");
2268
2269 if(battery_status & MEGA_BATT_TEMP_HIGH)
2270 seq_puts(m, " Temperature High");
2271
2272 if(battery_status & MEGA_BATT_PACK_MISSING)
2273 seq_puts(m, " Pack Missing");
2274
2275 if(battery_status & MEGA_BATT_CHARGE_INPROG)
2276 seq_puts(m, " Charge In-progress");
2277
2278 if(battery_status & MEGA_BATT_CHARGE_FAIL)
2279 seq_puts(m, " Charge Fail");
2280
2281 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2282 seq_puts(m, " Cycles Exceeded");
2283
2284 seq_putc(m, '\n');
2285
2286free_inquiry:
2287 mega_free_inquiry(inquiry, dma_handle, pdev);
2288free_pdev:
2289 free_local_pdev(pdev);
2290 return 0;
2291}
2292
2293
2294/*
2295 * Display scsi inquiry
2296 */
2297static void
2298mega_print_inquiry(struct seq_file *m, char *scsi_inq)
2299{
2300 int i;
2301
2302 seq_puts(m, " Vendor: ");
2303 seq_write(m, scsi_inq + 8, 8);
2304 seq_puts(m, " Model: ");
2305 seq_write(m, scsi_inq + 16, 16);
2306 seq_puts(m, " Rev: ");
2307 seq_write(m, scsi_inq + 32, 4);
2308 seq_putc(m, '\n');
2309
2310 i = scsi_inq[0] & 0x1f;
2311 seq_printf(m, " Type: %s ", scsi_device_type(i));
2312
2313 seq_printf(m, " ANSI SCSI revision: %02x",
2314 scsi_inq[2] & 0x07);
2315
2316 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2317 seq_puts(m, " CCS\n");
2318 else
2319 seq_putc(m, '\n');
2320}
2321
2322/**
2323 * proc_show_pdrv()
2324 * @m - Synthetic file construction data
2325 * @page - buffer to write the data in
2326 * @adapter - pointer to our soft state
2327 *
2328 * Display information about the physical drives.
2329 */
2330static int
2331proc_show_pdrv(struct seq_file *m, adapter_t *adapter, int channel)
2332{
2333 dma_addr_t dma_handle;
2334 char *scsi_inq;
2335 dma_addr_t scsi_inq_dma_handle;
2336 caddr_t inquiry;
2337 struct pci_dev *pdev;
2338 u8 *pdrv_state;
2339 u8 state;
2340 int tgt;
2341 int max_channels;
2342 int i;
2343
2344 if( make_local_pdev(adapter, &pdev) != 0 )
2345 return 0;
2346
2347 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2348 goto free_pdev;
2349
2350 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2351 seq_puts(m, "Adapter inquiry failed.\n");
2352 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2353 goto free_inquiry;
2354 }
2355
2356
2357 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2358 if( scsi_inq == NULL ) {
2359 seq_puts(m, "memory not available for scsi inq.\n");
2360 goto free_inquiry;
2361 }
2362
2363 if( adapter->flag & BOARD_40LD ) {
2364 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2365 }
2366 else {
2367 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2368 raid_inq.pdrv_info.pdrv_state;
2369 }
2370
2371 max_channels = adapter->product_info.nchannels;
2372
2373 if( channel >= max_channels ) {
2374 goto free_pci;
2375 }
2376
2377 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2378
2379 i = channel*16 + tgt;
2380
2381 state = *(pdrv_state + i);
2382 switch( state & 0x0F ) {
2383 case PDRV_ONLINE:
2384 seq_printf(m, "Channel:%2d Id:%2d State: Online",
2385 channel, tgt);
2386 break;
2387
2388 case PDRV_FAILED:
2389 seq_printf(m, "Channel:%2d Id:%2d State: Failed",
2390 channel, tgt);
2391 break;
2392
2393 case PDRV_RBLD:
2394 seq_printf(m, "Channel:%2d Id:%2d State: Rebuild",
2395 channel, tgt);
2396 break;
2397
2398 case PDRV_HOTSPARE:
2399 seq_printf(m, "Channel:%2d Id:%2d State: Hot spare",
2400 channel, tgt);
2401 break;
2402
2403 default:
2404 seq_printf(m, "Channel:%2d Id:%2d State: Un-configured",
2405 channel, tgt);
2406 break;
2407 }
2408
2409 /*
2410 * This interface displays inquiries for disk drives
2411 * only. Inquries for logical drives and non-disk
2412 * devices are available through /proc/scsi/scsi
2413 */
2414 memset(scsi_inq, 0, 256);
2415 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2416 scsi_inq_dma_handle) ||
2417 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2418 continue;
2419 }
2420
2421 /*
2422 * Check for overflow. We print less than 240
2423 * characters for inquiry
2424 */
2425 seq_puts(m, ".\n");
2426 mega_print_inquiry(m, scsi_inq);
2427 }
2428
2429free_pci:
2430 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2431free_inquiry:
2432 mega_free_inquiry(inquiry, dma_handle, pdev);
2433free_pdev:
2434 free_local_pdev(pdev);
2435 return 0;
2436}
2437
2438/**
2439 * proc_show_pdrv_ch0()
2440 * @m - Synthetic file construction data
2441 * @v - File iterator
2442 *
2443 * Display information about the physical drives on physical channel 0.
2444 */
2445static int
2446proc_show_pdrv_ch0(struct seq_file *m, void *v)
2447{
2448 return proc_show_pdrv(m, m->private, 0);
2449}
2450
2451
2452/**
2453 * proc_show_pdrv_ch1()
2454 * @m - Synthetic file construction data
2455 * @v - File iterator
2456 *
2457 * Display information about the physical drives on physical channel 1.
2458 */
2459static int
2460proc_show_pdrv_ch1(struct seq_file *m, void *v)
2461{
2462 return proc_show_pdrv(m, m->private, 1);
2463}
2464
2465
2466/**
2467 * proc_show_pdrv_ch2()
2468 * @m - Synthetic file construction data
2469 * @v - File iterator
2470 *
2471 * Display information about the physical drives on physical channel 2.
2472 */
2473static int
2474proc_show_pdrv_ch2(struct seq_file *m, void *v)
2475{
2476 return proc_show_pdrv(m, m->private, 2);
2477}
2478
2479
2480/**
2481 * proc_show_pdrv_ch3()
2482 * @m - Synthetic file construction data
2483 * @v - File iterator
2484 *
2485 * Display information about the physical drives on physical channel 3.
2486 */
2487static int
2488proc_show_pdrv_ch3(struct seq_file *m, void *v)
2489{
2490 return proc_show_pdrv(m, m->private, 3);
2491}
2492
2493
2494/**
2495 * proc_show_rdrv()
2496 * @m - Synthetic file construction data
2497 * @adapter - pointer to our soft state
2498 * @start - starting logical drive to display
2499 * @end - ending logical drive to display
2500 *
2501 * We do not print the inquiry information since its already available through
2502 * /proc/scsi/scsi interface
2503 */
2504static int
2505proc_show_rdrv(struct seq_file *m, adapter_t *adapter, int start, int end )
2506{
2507 dma_addr_t dma_handle;
2508 logdrv_param *lparam;
2509 megacmd_t mc;
2510 char *disk_array;
2511 dma_addr_t disk_array_dma_handle;
2512 caddr_t inquiry;
2513 struct pci_dev *pdev;
2514 u8 *rdrv_state;
2515 int num_ldrv;
2516 u32 array_sz;
2517 int i;
2518
2519 if( make_local_pdev(adapter, &pdev) != 0 )
2520 return 0;
2521
2522 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2523 goto free_pdev;
2524
2525 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2526 seq_puts(m, "Adapter inquiry failed.\n");
2527 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2528 goto free_inquiry;
2529 }
2530
2531 memset(&mc, 0, sizeof(megacmd_t));
2532
2533 if( adapter->flag & BOARD_40LD ) {
2534 array_sz = sizeof(disk_array_40ld);
2535
2536 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2537
2538 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2539 }
2540 else {
2541 array_sz = sizeof(disk_array_8ld);
2542
2543 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2544 raid_inq.logdrv_info.ldrv_state;
2545
2546 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2547 raid_inq.logdrv_info.num_ldrv;
2548 }
2549
2550 disk_array = pci_alloc_consistent(pdev, array_sz,
2551 &disk_array_dma_handle);
2552
2553 if( disk_array == NULL ) {
2554 seq_puts(m, "memory not available.\n");
2555 goto free_inquiry;
2556 }
2557
2558 mc.xferaddr = (u32)disk_array_dma_handle;
2559
2560 if( adapter->flag & BOARD_40LD ) {
2561 mc.cmd = FC_NEW_CONFIG;
2562 mc.opcode = OP_DCMD_READ_CONFIG;
2563
2564 if( mega_internal_command(adapter, &mc, NULL) ) {
2565 seq_puts(m, "40LD read config failed.\n");
2566 goto free_pci;
2567 }
2568
2569 }
2570 else {
2571 mc.cmd = NEW_READ_CONFIG_8LD;
2572
2573 if( mega_internal_command(adapter, &mc, NULL) ) {
2574 mc.cmd = READ_CONFIG_8LD;
2575 if( mega_internal_command(adapter, &mc, NULL) ) {
2576 seq_puts(m, "8LD read config failed.\n");
2577 goto free_pci;
2578 }
2579 }
2580 }
2581
2582 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
2583
2584 if( adapter->flag & BOARD_40LD ) {
2585 lparam =
2586 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
2587 }
2588 else {
2589 lparam =
2590 &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
2591 }
2592
2593 /*
2594 * Check for overflow. We print less than 240 characters for
2595 * information about each logical drive.
2596 */
2597 seq_printf(m, "Logical drive:%2d:, ", i);
2598
2599 switch( rdrv_state[i] & 0x0F ) {
2600 case RDRV_OFFLINE:
2601 seq_puts(m, "state: offline");
2602 break;
2603 case RDRV_DEGRADED:
2604 seq_puts(m, "state: degraded");
2605 break;
2606 case RDRV_OPTIMAL:
2607 seq_puts(m, "state: optimal");
2608 break;
2609 case RDRV_DELETED:
2610 seq_puts(m, "state: deleted");
2611 break;
2612 default:
2613 seq_puts(m, "state: unknown");
2614 break;
2615 }
2616
2617 /*
2618 * Check if check consistency or initialization is going on
2619 * for this logical drive.
2620 */
2621 if( (rdrv_state[i] & 0xF0) == 0x20 )
2622 seq_puts(m, ", check-consistency in progress");
2623 else if( (rdrv_state[i] & 0xF0) == 0x10 )
2624 seq_puts(m, ", initialization in progress");
2625
2626 seq_putc(m, '\n');
2627
2628 seq_printf(m, "Span depth:%3d, ", lparam->span_depth);
2629 seq_printf(m, "RAID level:%3d, ", lparam->level);
2630 seq_printf(m, "Stripe size:%3d, ",
2631 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
2632 seq_printf(m, "Row size:%3d\n", lparam->row_size);
2633
2634 seq_puts(m, "Read Policy: ");
2635 switch(lparam->read_ahead) {
2636 case NO_READ_AHEAD:
2637 seq_puts(m, "No read ahead, ");
2638 break;
2639 case READ_AHEAD:
2640 seq_puts(m, "Read ahead, ");
2641 break;
2642 case ADAP_READ_AHEAD:
2643 seq_puts(m, "Adaptive, ");
2644 break;
2645
2646 }
2647
2648 seq_puts(m, "Write Policy: ");
2649 switch(lparam->write_mode) {
2650 case WRMODE_WRITE_THRU:
2651 seq_puts(m, "Write thru, ");
2652 break;
2653 case WRMODE_WRITE_BACK:
2654 seq_puts(m, "Write back, ");
2655 break;
2656 }
2657
2658 seq_puts(m, "Cache Policy: ");
2659 switch(lparam->direct_io) {
2660 case CACHED_IO:
2661 seq_puts(m, "Cached IO\n\n");
2662 break;
2663 case DIRECT_IO:
2664 seq_puts(m, "Direct IO\n\n");
2665 break;
2666 }
2667 }
2668
2669free_pci:
2670 pci_free_consistent(pdev, array_sz, disk_array,
2671 disk_array_dma_handle);
2672free_inquiry:
2673 mega_free_inquiry(inquiry, dma_handle, pdev);
2674free_pdev:
2675 free_local_pdev(pdev);
2676 return 0;
2677}
2678
2679/**
2680 * proc_show_rdrv_10()
2681 * @m - Synthetic file construction data
2682 * @v - File iterator
2683 *
2684 * Display real time information about the logical drives 0 through 9.
2685 */
2686static int
2687proc_show_rdrv_10(struct seq_file *m, void *v)
2688{
2689 return proc_show_rdrv(m, m->private, 0, 9);
2690}
2691
2692
2693/**
2694 * proc_show_rdrv_20()
2695 * @m - Synthetic file construction data
2696 * @v - File iterator
2697 *
2698 * Display real time information about the logical drives 0 through 9.
2699 */
2700static int
2701proc_show_rdrv_20(struct seq_file *m, void *v)
2702{
2703 return proc_show_rdrv(m, m->private, 10, 19);
2704}
2705
2706
2707/**
2708 * proc_show_rdrv_30()
2709 * @m - Synthetic file construction data
2710 * @v - File iterator
2711 *
2712 * Display real time information about the logical drives 0 through 9.
2713 */
2714static int
2715proc_show_rdrv_30(struct seq_file *m, void *v)
2716{
2717 return proc_show_rdrv(m, m->private, 20, 29);
2718}
2719
2720
2721/**
2722 * proc_show_rdrv_40()
2723 * @m - Synthetic file construction data
2724 * @v - File iterator
2725 *
2726 * Display real time information about the logical drives 0 through 9.
2727 */
2728static int
2729proc_show_rdrv_40(struct seq_file *m, void *v)
2730{
2731 return proc_show_rdrv(m, m->private, 30, 39);
2732}
2733
2734
2735/*
2736 * seq_file wrappers for procfile show routines.
2737 */
2738static int mega_proc_open(struct inode *inode, struct file *file)
2739{
2740 adapter_t *adapter = proc_get_parent_data(inode);
2741 int (*show)(struct seq_file *, void *) = PDE_DATA(inode);
2742
2743 return single_open(file, show, adapter);
2744}
2745
2746static const struct file_operations mega_proc_fops = {
2747 .open = mega_proc_open,
2748 .read = seq_read,
2749 .llseek = seq_lseek,
2750 .release = single_release,
2751};
2752
2753/*
2754 * Table of proc files we need to create.
2755 */
2756struct mega_proc_file {
2757 const char *name;
2758 unsigned short ptr_offset;
2759 int (*show) (struct seq_file *m, void *v);
2760};
2761
2762static const struct mega_proc_file mega_proc_files[] = {
2763 { "config", offsetof(adapter_t, proc_read), proc_show_config },
2764 { "stat", offsetof(adapter_t, proc_stat), proc_show_stat },
2765 { "mailbox", offsetof(adapter_t, proc_mbox), proc_show_mbox },
2766#if MEGA_HAVE_ENH_PROC
2767 { "rebuild-rate", offsetof(adapter_t, proc_rr), proc_show_rebuild_rate },
2768 { "battery-status", offsetof(adapter_t, proc_battery), proc_show_battery },
2769 { "diskdrives-ch0", offsetof(adapter_t, proc_pdrvstat[0]), proc_show_pdrv_ch0 },
2770 { "diskdrives-ch1", offsetof(adapter_t, proc_pdrvstat[1]), proc_show_pdrv_ch1 },
2771 { "diskdrives-ch2", offsetof(adapter_t, proc_pdrvstat[2]), proc_show_pdrv_ch2 },
2772 { "diskdrives-ch3", offsetof(adapter_t, proc_pdrvstat[3]), proc_show_pdrv_ch3 },
2773 { "raiddrives-0-9", offsetof(adapter_t, proc_rdrvstat[0]), proc_show_rdrv_10 },
2774 { "raiddrives-10-19", offsetof(adapter_t, proc_rdrvstat[1]), proc_show_rdrv_20 },
2775 { "raiddrives-20-29", offsetof(adapter_t, proc_rdrvstat[2]), proc_show_rdrv_30 },
2776 { "raiddrives-30-39", offsetof(adapter_t, proc_rdrvstat[3]), proc_show_rdrv_40 },
2777#endif
2778 { NULL }
2779};
2780
2781/**
2782 * mega_create_proc_entry()
2783 * @index - index in soft state array
2784 * @parent - parent node for this /proc entry
2785 *
2786 * Creates /proc entries for our controllers.
2787 */
2788static void
2789mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2790{
2791 const struct mega_proc_file *f;
2792 adapter_t *adapter = hba_soft_state[index];
2793 struct proc_dir_entry *dir, *de, **ppde;
2794 u8 string[16];
2795
2796 sprintf(string, "hba%d", adapter->host->host_no);
2797
2798 dir = adapter->controller_proc_dir_entry =
2799 proc_mkdir_data(string, 0, parent, adapter);
2800 if(!dir) {
2801 dev_warn(&adapter->dev->dev, "proc_mkdir failed\n");
2802 return;
2803 }
2804
2805 for (f = mega_proc_files; f->name; f++) {
2806 de = proc_create_data(f->name, S_IRUSR, dir, &mega_proc_fops,
2807 f->show);
2808 if (!de) {
2809 dev_warn(&adapter->dev->dev, "proc_create failed\n");
2810 return;
2811 }
2812
2813 ppde = (void *)adapter + f->ptr_offset;
2814 *ppde = de;
2815 }
2816}
2817
2818#else
2819static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2820{
2821}
2822#endif
2823
2824
2825/**
2826 * megaraid_biosparam()
2827 *
2828 * Return the disk geometry for a particular disk
2829 */
2830static int
2831megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
2832 sector_t capacity, int geom[])
2833{
2834 adapter_t *adapter;
2835 unsigned char *bh;
2836 int heads;
2837 int sectors;
2838 int cylinders;
2839 int rval;
2840
2841 /* Get pointer to host config structure */
2842 adapter = (adapter_t *)sdev->host->hostdata;
2843
2844 if (IS_RAID_CH(adapter, sdev->channel)) {
2845 /* Default heads (64) & sectors (32) */
2846 heads = 64;
2847 sectors = 32;
2848 cylinders = (ulong)capacity / (heads * sectors);
2849
2850 /*
2851 * Handle extended translation size for logical drives
2852 * > 1Gb
2853 */
2854 if ((ulong)capacity >= 0x200000) {
2855 heads = 255;
2856 sectors = 63;
2857 cylinders = (ulong)capacity / (heads * sectors);
2858 }
2859
2860 /* return result */
2861 geom[0] = heads;
2862 geom[1] = sectors;
2863 geom[2] = cylinders;
2864 }
2865 else {
2866 bh = scsi_bios_ptable(bdev);
2867
2868 if( bh ) {
2869 rval = scsi_partsize(bh, capacity,
2870 &geom[2], &geom[0], &geom[1]);
2871 kfree(bh);
2872 if( rval != -1 )
2873 return rval;
2874 }
2875
2876 dev_info(&adapter->dev->dev,
2877 "invalid partition on this disk on channel %d\n",
2878 sdev->channel);
2879
2880 /* Default heads (64) & sectors (32) */
2881 heads = 64;
2882 sectors = 32;
2883 cylinders = (ulong)capacity / (heads * sectors);
2884
2885 /* Handle extended translation size for logical drives > 1Gb */
2886 if ((ulong)capacity >= 0x200000) {
2887 heads = 255;
2888 sectors = 63;
2889 cylinders = (ulong)capacity / (heads * sectors);
2890 }
2891
2892 /* return result */
2893 geom[0] = heads;
2894 geom[1] = sectors;
2895 geom[2] = cylinders;
2896 }
2897
2898 return 0;
2899}
2900
2901/**
2902 * mega_init_scb()
2903 * @adapter - pointer to our soft state
2904 *
2905 * Allocate memory for the various pointers in the scb structures:
2906 * scatter-gather list pointer, passthru and extended passthru structure
2907 * pointers.
2908 */
2909static int
2910mega_init_scb(adapter_t *adapter)
2911{
2912 scb_t *scb;
2913 int i;
2914
2915 for( i = 0; i < adapter->max_cmds; i++ ) {
2916
2917 scb = &adapter->scb_list[i];
2918
2919 scb->sgl64 = NULL;
2920 scb->sgl = NULL;
2921 scb->pthru = NULL;
2922 scb->epthru = NULL;
2923 }
2924
2925 for( i = 0; i < adapter->max_cmds; i++ ) {
2926
2927 scb = &adapter->scb_list[i];
2928
2929 scb->idx = i;
2930
2931 scb->sgl64 = pci_alloc_consistent(adapter->dev,
2932 sizeof(mega_sgl64) * adapter->sglen,
2933 &scb->sgl_dma_addr);
2934
2935 scb->sgl = (mega_sglist *)scb->sgl64;
2936
2937 if( !scb->sgl ) {
2938 dev_warn(&adapter->dev->dev, "RAID: Can't allocate sglist\n");
2939 mega_free_sgl(adapter);
2940 return -1;
2941 }
2942
2943 scb->pthru = pci_alloc_consistent(adapter->dev,
2944 sizeof(mega_passthru),
2945 &scb->pthru_dma_addr);
2946
2947 if( !scb->pthru ) {
2948 dev_warn(&adapter->dev->dev, "RAID: Can't allocate passthru\n");
2949 mega_free_sgl(adapter);
2950 return -1;
2951 }
2952
2953 scb->epthru = pci_alloc_consistent(adapter->dev,
2954 sizeof(mega_ext_passthru),
2955 &scb->epthru_dma_addr);
2956
2957 if( !scb->epthru ) {
2958 dev_warn(&adapter->dev->dev,
2959 "Can't allocate extended passthru\n");
2960 mega_free_sgl(adapter);
2961 return -1;
2962 }
2963
2964
2965 scb->dma_type = MEGA_DMA_TYPE_NONE;
2966
2967 /*
2968 * Link to free list
2969 * lock not required since we are loading the driver, so no
2970 * commands possible right now.
2971 */
2972 scb->state = SCB_FREE;
2973 scb->cmd = NULL;
2974 list_add(&scb->list, &adapter->free_list);
2975 }
2976
2977 return 0;
2978}
2979
2980
2981/**
2982 * megadev_open()
2983 * @inode - unused
2984 * @filep - unused
2985 *
2986 * Routines for the character/ioctl interface to the driver. Find out if this
2987 * is a valid open.
2988 */
2989static int
2990megadev_open (struct inode *inode, struct file *filep)
2991{
2992 /*
2993 * Only allow superuser to access private ioctl interface
2994 */
2995 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
2996
2997 return 0;
2998}
2999
3000
3001/**
3002 * megadev_ioctl()
3003 * @inode - Our device inode
3004 * @filep - unused
3005 * @cmd - ioctl command
3006 * @arg - user buffer
3007 *
3008 * ioctl entry point for our private ioctl interface. We move the data in from
3009 * the user space, prepare the command (if necessary, convert the old MIMD
3010 * ioctl to new ioctl command), and issue a synchronous command to the
3011 * controller.
3012 */
3013static int
3014megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
3015{
3016 adapter_t *adapter;
3017 nitioctl_t uioc;
3018 int adapno;
3019 int rval;
3020 mega_passthru __user *upthru; /* user address for passthru */
3021 mega_passthru *pthru; /* copy user passthru here */
3022 dma_addr_t pthru_dma_hndl;
3023 void *data = NULL; /* data to be transferred */
3024 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */
3025 megacmd_t mc;
3026 megastat_t __user *ustats;
3027 int num_ldrv;
3028 u32 uxferaddr = 0;
3029 struct pci_dev *pdev;
3030
3031 ustats = NULL; /* avoid compilation warnings */
3032 num_ldrv = 0;
3033
3034 /*
3035 * Make sure only USCSICMD are issued through this interface.
3036 * MIMD application would still fire different command.
3037 */
3038 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3039 return -EINVAL;
3040 }
3041
3042 /*
3043 * Check and convert a possible MIMD command to NIT command.
3044 * mega_m_to_n() copies the data from the user space, so we do not
3045 * have to do it here.
3046 * NOTE: We will need some user address to copyout the data, therefore
3047 * the inteface layer will also provide us with the required user
3048 * addresses.
3049 */
3050 memset(&uioc, 0, sizeof(nitioctl_t));
3051 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3052 return rval;
3053
3054
3055 switch( uioc.opcode ) {
3056
3057 case GET_DRIVER_VER:
3058 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3059 return (-EFAULT);
3060
3061 break;
3062
3063 case GET_N_ADAP:
3064 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3065 return (-EFAULT);
3066
3067 /*
3068 * Shucks. MIMD interface returns a positive value for number
3069 * of adapters. TODO: Change it to return 0 when there is no
3070 * applicatio using mimd interface.
3071 */
3072 return hba_count;
3073
3074 case GET_ADAP_INFO:
3075
3076 /*
3077 * Which adapter
3078 */
3079 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3080 return (-ENODEV);
3081
3082 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3083 sizeof(struct mcontroller)) )
3084 return (-EFAULT);
3085 break;
3086
3087#if MEGA_HAVE_STATS
3088
3089 case GET_STATS:
3090 /*
3091 * Which adapter
3092 */
3093 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3094 return (-ENODEV);
3095
3096 adapter = hba_soft_state[adapno];
3097
3098 ustats = uioc.uioc_uaddr;
3099
3100 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3101 return (-EFAULT);
3102
3103 /*
3104 * Check for the validity of the logical drive number
3105 */
3106 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3107
3108 if( copy_to_user(ustats->nreads, adapter->nreads,
3109 num_ldrv*sizeof(u32)) )
3110 return -EFAULT;
3111
3112 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3113 num_ldrv*sizeof(u32)) )
3114 return -EFAULT;
3115
3116 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3117 num_ldrv*sizeof(u32)) )
3118 return -EFAULT;
3119
3120 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3121 num_ldrv*sizeof(u32)) )
3122 return -EFAULT;
3123
3124 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3125 num_ldrv*sizeof(u32)) )
3126 return -EFAULT;
3127
3128 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3129 num_ldrv*sizeof(u32)) )
3130 return -EFAULT;
3131
3132 return 0;
3133
3134#endif
3135 case MBOX_CMD:
3136
3137 /*
3138 * Which adapter
3139 */
3140 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3141 return (-ENODEV);
3142
3143 adapter = hba_soft_state[adapno];
3144
3145 /*
3146 * Deletion of logical drive is a special case. The adapter
3147 * should be quiescent before this command is issued.
3148 */
3149 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3150 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3151
3152 /*
3153 * Do we support this feature
3154 */
3155 if( !adapter->support_random_del ) {
3156 dev_warn(&adapter->dev->dev, "logdrv "
3157 "delete on non-supporting F/W\n");
3158
3159 return (-EINVAL);
3160 }
3161
3162 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3163
3164 if( rval == 0 ) {
3165 memset(&mc, 0, sizeof(megacmd_t));
3166
3167 mc.status = rval;
3168
3169 rval = mega_n_to_m((void __user *)arg, &mc);
3170 }
3171
3172 return rval;
3173 }
3174 /*
3175 * This interface only support the regular passthru commands.
3176 * Reject extended passthru and 64-bit passthru
3177 */
3178 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3179 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3180
3181 dev_warn(&adapter->dev->dev, "rejected passthru\n");
3182
3183 return (-EINVAL);
3184 }
3185
3186 /*
3187 * For all internal commands, the buffer must be allocated in
3188 * <4GB address range
3189 */
3190 if( make_local_pdev(adapter, &pdev) != 0 )
3191 return -EIO;
3192
3193 /* Is it a passthru command or a DCMD */
3194 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3195 /* Passthru commands */
3196
3197 pthru = pci_alloc_consistent(pdev,
3198 sizeof(mega_passthru),
3199 &pthru_dma_hndl);
3200
3201 if( pthru == NULL ) {
3202 free_local_pdev(pdev);
3203 return (-ENOMEM);
3204 }
3205
3206 /*
3207 * The user passthru structure
3208 */
3209 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr;
3210
3211 /*
3212 * Copy in the user passthru here.
3213 */
3214 if( copy_from_user(pthru, upthru,
3215 sizeof(mega_passthru)) ) {
3216
3217 pci_free_consistent(pdev,
3218 sizeof(mega_passthru), pthru,
3219 pthru_dma_hndl);
3220
3221 free_local_pdev(pdev);
3222
3223 return (-EFAULT);
3224 }
3225
3226 /*
3227 * Is there a data transfer
3228 */
3229 if( pthru->dataxferlen ) {
3230 data = pci_alloc_consistent(pdev,
3231 pthru->dataxferlen,
3232 &data_dma_hndl);
3233
3234 if( data == NULL ) {
3235 pci_free_consistent(pdev,
3236 sizeof(mega_passthru),
3237 pthru,
3238 pthru_dma_hndl);
3239
3240 free_local_pdev(pdev);
3241
3242 return (-ENOMEM);
3243 }
3244
3245 /*
3246 * Save the user address and point the kernel
3247 * address at just allocated memory
3248 */
3249 uxferaddr = pthru->dataxferaddr;
3250 pthru->dataxferaddr = data_dma_hndl;
3251 }
3252
3253
3254 /*
3255 * Is data coming down-stream
3256 */
3257 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3258 /*
3259 * Get the user data
3260 */
3261 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3262 pthru->dataxferlen) ) {
3263 rval = (-EFAULT);
3264 goto freemem_and_return;
3265 }
3266 }
3267
3268 memset(&mc, 0, sizeof(megacmd_t));
3269
3270 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3271 mc.xferaddr = (u32)pthru_dma_hndl;
3272
3273 /*
3274 * Issue the command
3275 */
3276 mega_internal_command(adapter, &mc, pthru);
3277
3278 rval = mega_n_to_m((void __user *)arg, &mc);
3279
3280 if( rval ) goto freemem_and_return;
3281
3282
3283 /*
3284 * Is data going up-stream
3285 */
3286 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3287 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3288 pthru->dataxferlen) ) {
3289 rval = (-EFAULT);
3290 }
3291 }
3292
3293 /*
3294 * Send the request sense data also, irrespective of
3295 * whether the user has asked for it or not.
3296 */
3297 if (copy_to_user(upthru->reqsensearea,
3298 pthru->reqsensearea, 14))
3299 rval = -EFAULT;
3300
3301freemem_and_return:
3302 if( pthru->dataxferlen ) {
3303 pci_free_consistent(pdev,
3304 pthru->dataxferlen, data,
3305 data_dma_hndl);
3306 }
3307
3308 pci_free_consistent(pdev, sizeof(mega_passthru),
3309 pthru, pthru_dma_hndl);
3310
3311 free_local_pdev(pdev);
3312
3313 return rval;
3314 }
3315 else {
3316 /* DCMD commands */
3317
3318 /*
3319 * Is there a data transfer
3320 */
3321 if( uioc.xferlen ) {
3322 data = pci_alloc_consistent(pdev,
3323 uioc.xferlen, &data_dma_hndl);
3324
3325 if( data == NULL ) {
3326 free_local_pdev(pdev);
3327 return (-ENOMEM);
3328 }
3329
3330 uxferaddr = MBOX(uioc)->xferaddr;
3331 }
3332
3333 /*
3334 * Is data coming down-stream
3335 */
3336 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3337 /*
3338 * Get the user data
3339 */
3340 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3341 uioc.xferlen) ) {
3342
3343 pci_free_consistent(pdev,
3344 uioc.xferlen,
3345 data, data_dma_hndl);
3346
3347 free_local_pdev(pdev);
3348
3349 return (-EFAULT);
3350 }
3351 }
3352
3353 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3354
3355 mc.xferaddr = (u32)data_dma_hndl;
3356
3357 /*
3358 * Issue the command
3359 */
3360 mega_internal_command(adapter, &mc, NULL);
3361
3362 rval = mega_n_to_m((void __user *)arg, &mc);
3363
3364 if( rval ) {
3365 if( uioc.xferlen ) {
3366 pci_free_consistent(pdev,
3367 uioc.xferlen, data,
3368 data_dma_hndl);
3369 }
3370
3371 free_local_pdev(pdev);
3372
3373 return rval;
3374 }
3375
3376 /*
3377 * Is data going up-stream
3378 */
3379 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3380 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3381 uioc.xferlen) ) {
3382
3383 rval = (-EFAULT);
3384 }
3385 }
3386
3387 if( uioc.xferlen ) {
3388 pci_free_consistent(pdev,
3389 uioc.xferlen, data,
3390 data_dma_hndl);
3391 }
3392
3393 free_local_pdev(pdev);
3394
3395 return rval;
3396 }
3397
3398 default:
3399 return (-EINVAL);
3400 }
3401
3402 return 0;
3403}
3404
3405static long
3406megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
3407{
3408 int ret;
3409
3410 mutex_lock(&megadev_mutex);
3411 ret = megadev_ioctl(filep, cmd, arg);
3412 mutex_unlock(&megadev_mutex);
3413
3414 return ret;
3415}
3416
3417/**
3418 * mega_m_to_n()
3419 * @arg - user address
3420 * @uioc - new ioctl structure
3421 *
3422 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3423 * structure
3424 *
3425 * Converts the older mimd ioctl structure to newer NIT structure
3426 */
3427static int
3428mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3429{
3430 struct uioctl_t uioc_mimd;
3431 char signature[8] = {0};
3432 u8 opcode;
3433 u8 subopcode;
3434
3435
3436 /*
3437 * check is the application conforms to NIT. We do not have to do much
3438 * in that case.
3439 * We exploit the fact that the signature is stored in the very
3440 * beginning of the structure.
3441 */
3442
3443 if( copy_from_user(signature, arg, 7) )
3444 return (-EFAULT);
3445
3446 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3447
3448 /*
3449 * NOTE NOTE: The nit ioctl is still under flux because of
3450 * change of mailbox definition, in HPE. No applications yet
3451 * use this interface and let's not have applications use this
3452 * interface till the new specifitions are in place.
3453 */
3454 return -EINVAL;
3455#if 0
3456 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3457 return (-EFAULT);
3458 return 0;
3459#endif
3460 }
3461
3462 /*
3463 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3464 *
3465 * Get the user ioctl structure
3466 */
3467 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3468 return (-EFAULT);
3469
3470
3471 /*
3472 * Get the opcode and subopcode for the commands
3473 */
3474 opcode = uioc_mimd.ui.fcs.opcode;
3475 subopcode = uioc_mimd.ui.fcs.subopcode;
3476
3477 switch (opcode) {
3478 case 0x82:
3479
3480 switch (subopcode) {
3481
3482 case MEGAIOC_QDRVRVER: /* Query driver version */
3483 uioc->opcode = GET_DRIVER_VER;
3484 uioc->uioc_uaddr = uioc_mimd.data;
3485 break;
3486
3487 case MEGAIOC_QNADAP: /* Get # of adapters */
3488 uioc->opcode = GET_N_ADAP;
3489 uioc->uioc_uaddr = uioc_mimd.data;
3490 break;
3491
3492 case MEGAIOC_QADAPINFO: /* Get adapter information */
3493 uioc->opcode = GET_ADAP_INFO;
3494 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3495 uioc->uioc_uaddr = uioc_mimd.data;
3496 break;
3497
3498 default:
3499 return(-EINVAL);
3500 }
3501
3502 break;
3503
3504
3505 case 0x81:
3506
3507 uioc->opcode = MBOX_CMD;
3508 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3509
3510 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3511
3512 uioc->xferlen = uioc_mimd.ui.fcs.length;
3513
3514 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3515 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3516
3517 break;
3518
3519 case 0x80:
3520
3521 uioc->opcode = MBOX_CMD;
3522 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3523
3524 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3525
3526 /*
3527 * Choose the xferlen bigger of input and output data
3528 */
3529 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3530 uioc_mimd.outlen : uioc_mimd.inlen;
3531
3532 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3533 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3534
3535 break;
3536
3537 default:
3538 return (-EINVAL);
3539
3540 }
3541
3542 return 0;
3543}
3544
3545/*
3546 * mega_n_to_m()
3547 * @arg - user address
3548 * @mc - mailbox command
3549 *
3550 * Updates the status information to the application, depending on application
3551 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3552 */
3553static int
3554mega_n_to_m(void __user *arg, megacmd_t *mc)
3555{
3556 nitioctl_t __user *uiocp;
3557 megacmd_t __user *umc;
3558 mega_passthru __user *upthru;
3559 struct uioctl_t __user *uioc_mimd;
3560 char signature[8] = {0};
3561
3562 /*
3563 * check is the application conforms to NIT.
3564 */
3565 if( copy_from_user(signature, arg, 7) )
3566 return -EFAULT;
3567
3568 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3569
3570 uiocp = arg;
3571
3572 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3573 return (-EFAULT);
3574
3575 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3576
3577 umc = MBOX_P(uiocp);
3578
3579 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3580 return -EFAULT;
3581
3582 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3583 return (-EFAULT);
3584 }
3585 }
3586 else {
3587 uioc_mimd = arg;
3588
3589 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3590 return (-EFAULT);
3591
3592 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3593
3594 umc = (megacmd_t __user *)uioc_mimd->mbox;
3595
3596 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3597 return (-EFAULT);
3598
3599 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3600 return (-EFAULT);
3601 }
3602 }
3603
3604 return 0;
3605}
3606
3607
3608/*
3609 * MEGARAID 'FW' commands.
3610 */
3611
3612/**
3613 * mega_is_bios_enabled()
3614 * @adapter - pointer to our soft state
3615 *
3616 * issue command to find out if the BIOS is enabled for this controller
3617 */
3618static int
3619mega_is_bios_enabled(adapter_t *adapter)
3620{
3621 unsigned char raw_mbox[sizeof(struct mbox_out)];
3622 mbox_t *mbox;
3623 int ret;
3624
3625 mbox = (mbox_t *)raw_mbox;
3626
3627 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3628
3629 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3630
3631 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3632
3633 raw_mbox[0] = IS_BIOS_ENABLED;
3634 raw_mbox[2] = GET_BIOS;
3635
3636
3637 ret = issue_scb_block(adapter, raw_mbox);
3638
3639 return *(char *)adapter->mega_buffer;
3640}
3641
3642
3643/**
3644 * mega_enum_raid_scsi()
3645 * @adapter - pointer to our soft state
3646 *
3647 * Find out what channels are RAID/SCSI. This information is used to
3648 * differentiate the virtual channels and physical channels and to support
3649 * ROMB feature and non-disk devices.
3650 */
3651static void
3652mega_enum_raid_scsi(adapter_t *adapter)
3653{
3654 unsigned char raw_mbox[sizeof(struct mbox_out)];
3655 mbox_t *mbox;
3656 int i;
3657
3658 mbox = (mbox_t *)raw_mbox;
3659
3660 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3661
3662 /*
3663 * issue command to find out what channels are raid/scsi
3664 */
3665 raw_mbox[0] = CHNL_CLASS;
3666 raw_mbox[2] = GET_CHNL_CLASS;
3667
3668 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3669
3670 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3671
3672 /*
3673 * Non-ROMB firmware fail this command, so all channels
3674 * must be shown RAID
3675 */
3676 adapter->mega_ch_class = 0xFF;
3677
3678 if(!issue_scb_block(adapter, raw_mbox)) {
3679 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
3680
3681 }
3682
3683 for( i = 0; i < adapter->product_info.nchannels; i++ ) {
3684 if( (adapter->mega_ch_class >> i) & 0x01 ) {
3685 dev_info(&adapter->dev->dev, "channel[%d] is raid\n",
3686 i);
3687 }
3688 else {
3689 dev_info(&adapter->dev->dev, "channel[%d] is scsi\n",
3690 i);
3691 }
3692 }
3693
3694 return;
3695}
3696
3697
3698/**
3699 * mega_get_boot_drv()
3700 * @adapter - pointer to our soft state
3701 *
3702 * Find out which device is the boot device. Note, any logical drive or any
3703 * phyical device (e.g., a CDROM) can be designated as a boot device.
3704 */
3705static void
3706mega_get_boot_drv(adapter_t *adapter)
3707{
3708 struct private_bios_data *prv_bios_data;
3709 unsigned char raw_mbox[sizeof(struct mbox_out)];
3710 mbox_t *mbox;
3711 u16 cksum = 0;
3712 u8 *cksum_p;
3713 u8 boot_pdrv;
3714 int i;
3715
3716 mbox = (mbox_t *)raw_mbox;
3717
3718 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3719
3720 raw_mbox[0] = BIOS_PVT_DATA;
3721 raw_mbox[2] = GET_BIOS_PVT_DATA;
3722
3723 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3724
3725 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3726
3727 adapter->boot_ldrv_enabled = 0;
3728 adapter->boot_ldrv = 0;
3729
3730 adapter->boot_pdrv_enabled = 0;
3731 adapter->boot_pdrv_ch = 0;
3732 adapter->boot_pdrv_tgt = 0;
3733
3734 if(issue_scb_block(adapter, raw_mbox) == 0) {
3735 prv_bios_data =
3736 (struct private_bios_data *)adapter->mega_buffer;
3737
3738 cksum = 0;
3739 cksum_p = (char *)prv_bios_data;
3740 for (i = 0; i < 14; i++ ) {
3741 cksum += (u16)(*cksum_p++);
3742 }
3743
3744 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
3745
3746 /*
3747 * If MSB is set, a physical drive is set as boot
3748 * device
3749 */
3750 if( prv_bios_data->boot_drv & 0x80 ) {
3751 adapter->boot_pdrv_enabled = 1;
3752 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
3753 adapter->boot_pdrv_ch = boot_pdrv / 16;
3754 adapter->boot_pdrv_tgt = boot_pdrv % 16;
3755 }
3756 else {
3757 adapter->boot_ldrv_enabled = 1;
3758 adapter->boot_ldrv = prv_bios_data->boot_drv;
3759 }
3760 }
3761 }
3762
3763}
3764
3765/**
3766 * mega_support_random_del()
3767 * @adapter - pointer to our soft state
3768 *
3769 * Find out if this controller supports random deletion and addition of
3770 * logical drives
3771 */
3772static int
3773mega_support_random_del(adapter_t *adapter)
3774{
3775 unsigned char raw_mbox[sizeof(struct mbox_out)];
3776 mbox_t *mbox;
3777 int rval;
3778
3779 mbox = (mbox_t *)raw_mbox;
3780
3781 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3782
3783 /*
3784 * issue command
3785 */
3786 raw_mbox[0] = FC_DEL_LOGDRV;
3787 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
3788
3789 rval = issue_scb_block(adapter, raw_mbox);
3790
3791 return !rval;
3792}
3793
3794
3795/**
3796 * mega_support_ext_cdb()
3797 * @adapter - pointer to our soft state
3798 *
3799 * Find out if this firmware support cdblen > 10
3800 */
3801static int
3802mega_support_ext_cdb(adapter_t *adapter)
3803{
3804 unsigned char raw_mbox[sizeof(struct mbox_out)];
3805 mbox_t *mbox;
3806 int rval;
3807
3808 mbox = (mbox_t *)raw_mbox;
3809
3810 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3811 /*
3812 * issue command to find out if controller supports extended CDBs.
3813 */
3814 raw_mbox[0] = 0xA4;
3815 raw_mbox[2] = 0x16;
3816
3817 rval = issue_scb_block(adapter, raw_mbox);
3818
3819 return !rval;
3820}
3821
3822
3823/**
3824 * mega_del_logdrv()
3825 * @adapter - pointer to our soft state
3826 * @logdrv - logical drive to be deleted
3827 *
3828 * Delete the specified logical drive. It is the responsibility of the user
3829 * app to let the OS know about this operation.
3830 */
3831static int
3832mega_del_logdrv(adapter_t *adapter, int logdrv)
3833{
3834 unsigned long flags;
3835 scb_t *scb;
3836 int rval;
3837
3838 /*
3839 * Stop sending commands to the controller, queue them internally.
3840 * When deletion is complete, ISR will flush the queue.
3841 */
3842 atomic_set(&adapter->quiescent, 1);
3843
3844 /*
3845 * Wait till all the issued commands are complete and there are no
3846 * commands in the pending queue
3847 */
3848 while (atomic_read(&adapter->pend_cmds) > 0 ||
3849 !list_empty(&adapter->pending_list))
3850 msleep(1000); /* sleep for 1s */
3851
3852 rval = mega_do_del_logdrv(adapter, logdrv);
3853
3854 spin_lock_irqsave(&adapter->lock, flags);
3855
3856 /*
3857 * If delete operation was successful, add 0x80 to the logical drive
3858 * ids for commands in the pending queue.
3859 */
3860 if (adapter->read_ldidmap) {
3861 struct list_head *pos;
3862 list_for_each(pos, &adapter->pending_list) {
3863 scb = list_entry(pos, scb_t, list);
3864 if (scb->pthru->logdrv < 0x80 )
3865 scb->pthru->logdrv += 0x80;
3866 }
3867 }
3868
3869 atomic_set(&adapter->quiescent, 0);
3870
3871 mega_runpendq(adapter);
3872
3873 spin_unlock_irqrestore(&adapter->lock, flags);
3874
3875 return rval;
3876}
3877
3878
3879static int
3880mega_do_del_logdrv(adapter_t *adapter, int logdrv)
3881{
3882 megacmd_t mc;
3883 int rval;
3884
3885 memset( &mc, 0, sizeof(megacmd_t));
3886
3887 mc.cmd = FC_DEL_LOGDRV;
3888 mc.opcode = OP_DEL_LOGDRV;
3889 mc.subopcode = logdrv;
3890
3891 rval = mega_internal_command(adapter, &mc, NULL);
3892
3893 /* log this event */
3894 if(rval) {
3895 dev_warn(&adapter->dev->dev, "Delete LD-%d failed", logdrv);
3896 return rval;
3897 }
3898
3899 /*
3900 * After deleting first logical drive, the logical drives must be
3901 * addressed by adding 0x80 to the logical drive id.
3902 */
3903 adapter->read_ldidmap = 1;
3904
3905 return rval;
3906}
3907
3908
3909/**
3910 * mega_get_max_sgl()
3911 * @adapter - pointer to our soft state
3912 *
3913 * Find out the maximum number of scatter-gather elements supported by this
3914 * version of the firmware
3915 */
3916static void
3917mega_get_max_sgl(adapter_t *adapter)
3918{
3919 unsigned char raw_mbox[sizeof(struct mbox_out)];
3920 mbox_t *mbox;
3921
3922 mbox = (mbox_t *)raw_mbox;
3923
3924 memset(mbox, 0, sizeof(raw_mbox));
3925
3926 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3927
3928 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3929
3930 raw_mbox[0] = MAIN_MISC_OPCODE;
3931 raw_mbox[2] = GET_MAX_SG_SUPPORT;
3932
3933
3934 if( issue_scb_block(adapter, raw_mbox) ) {
3935 /*
3936 * f/w does not support this command. Choose the default value
3937 */
3938 adapter->sglen = MIN_SGLIST;
3939 }
3940 else {
3941 adapter->sglen = *((char *)adapter->mega_buffer);
3942
3943 /*
3944 * Make sure this is not more than the resources we are
3945 * planning to allocate
3946 */
3947 if ( adapter->sglen > MAX_SGLIST )
3948 adapter->sglen = MAX_SGLIST;
3949 }
3950
3951 return;
3952}
3953
3954
3955/**
3956 * mega_support_cluster()
3957 * @adapter - pointer to our soft state
3958 *
3959 * Find out if this firmware support cluster calls.
3960 */
3961static int
3962mega_support_cluster(adapter_t *adapter)
3963{
3964 unsigned char raw_mbox[sizeof(struct mbox_out)];
3965 mbox_t *mbox;
3966
3967 mbox = (mbox_t *)raw_mbox;
3968
3969 memset(mbox, 0, sizeof(raw_mbox));
3970
3971 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3972
3973 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3974
3975 /*
3976 * Try to get the initiator id. This command will succeed iff the
3977 * clustering is available on this HBA.
3978 */
3979 raw_mbox[0] = MEGA_GET_TARGET_ID;
3980
3981 if( issue_scb_block(adapter, raw_mbox) == 0 ) {
3982
3983 /*
3984 * Cluster support available. Get the initiator target id.
3985 * Tell our id to mid-layer too.
3986 */
3987 adapter->this_id = *(u32 *)adapter->mega_buffer;
3988 adapter->host->this_id = adapter->this_id;
3989
3990 return 1;
3991 }
3992
3993 return 0;
3994}
3995
3996#ifdef CONFIG_PROC_FS
3997/**
3998 * mega_adapinq()
3999 * @adapter - pointer to our soft state
4000 * @dma_handle - DMA address of the buffer
4001 *
4002 * Issue internal commands while interrupts are available.
4003 * We only issue direct mailbox commands from within the driver. ioctl()
4004 * interface using these routines can issue passthru commands.
4005 */
4006static int
4007mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
4008{
4009 megacmd_t mc;
4010
4011 memset(&mc, 0, sizeof(megacmd_t));
4012
4013 if( adapter->flag & BOARD_40LD ) {
4014 mc.cmd = FC_NEW_CONFIG;
4015 mc.opcode = NC_SUBOP_ENQUIRY3;
4016 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
4017 }
4018 else {
4019 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
4020 }
4021
4022 mc.xferaddr = (u32)dma_handle;
4023
4024 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
4025 return -1;
4026 }
4027
4028 return 0;
4029}
4030
4031
4032/** mega_internal_dev_inquiry()
4033 * @adapter - pointer to our soft state
4034 * @ch - channel for this device
4035 * @tgt - ID of this device
4036 * @buf_dma_handle - DMA address of the buffer
4037 *
4038 * Issue the scsi inquiry for the specified device.
4039 */
4040static int
4041mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4042 dma_addr_t buf_dma_handle)
4043{
4044 mega_passthru *pthru;
4045 dma_addr_t pthru_dma_handle;
4046 megacmd_t mc;
4047 int rval;
4048 struct pci_dev *pdev;
4049
4050
4051 /*
4052 * For all internal commands, the buffer must be allocated in <4GB
4053 * address range
4054 */
4055 if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4056
4057 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4058 &pthru_dma_handle);
4059
4060 if( pthru == NULL ) {
4061 free_local_pdev(pdev);
4062 return -1;
4063 }
4064
4065 pthru->timeout = 2;
4066 pthru->ars = 1;
4067 pthru->reqsenselen = 14;
4068 pthru->islogical = 0;
4069
4070 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4071
4072 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4073
4074 pthru->cdblen = 6;
4075
4076 pthru->cdb[0] = INQUIRY;
4077 pthru->cdb[1] = 0;
4078 pthru->cdb[2] = 0;
4079 pthru->cdb[3] = 0;
4080 pthru->cdb[4] = 255;
4081 pthru->cdb[5] = 0;
4082
4083
4084 pthru->dataxferaddr = (u32)buf_dma_handle;
4085 pthru->dataxferlen = 256;
4086
4087 memset(&mc, 0, sizeof(megacmd_t));
4088
4089 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4090 mc.xferaddr = (u32)pthru_dma_handle;
4091
4092 rval = mega_internal_command(adapter, &mc, pthru);
4093
4094 pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4095 pthru_dma_handle);
4096
4097 free_local_pdev(pdev);
4098
4099 return rval;
4100}
4101#endif
4102
4103/**
4104 * mega_internal_command()
4105 * @adapter - pointer to our soft state
4106 * @mc - the mailbox command
4107 * @pthru - Passthru structure for DCDB commands
4108 *
4109 * Issue the internal commands in interrupt mode.
4110 * The last argument is the address of the passthru structure if the command
4111 * to be fired is a passthru command
4112 *
4113 * Note: parameter 'pthru' is null for non-passthru commands.
4114 */
4115static int
4116mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
4117{
4118 unsigned long flags;
4119 scb_t *scb;
4120 int rval;
4121
4122 /*
4123 * The internal commands share one command id and hence are
4124 * serialized. This is so because we want to reserve maximum number of
4125 * available command ids for the I/O commands.
4126 */
4127 mutex_lock(&adapter->int_mtx);
4128
4129 scb = &adapter->int_scb;
4130 memset(scb, 0, sizeof(scb_t));
4131
4132 scb->idx = CMDID_INT_CMDS;
4133 scb->state |= SCB_ACTIVE | SCB_PENDQ;
4134
4135 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4136
4137 /*
4138 * Is it a passthru command
4139 */
4140 if (mc->cmd == MEGA_MBOXCMD_PASSTHRU)
4141 scb->pthru = pthru;
4142
4143 spin_lock_irqsave(&adapter->lock, flags);
4144 list_add_tail(&scb->list, &adapter->pending_list);
4145 /*
4146 * Check if the HBA is in quiescent state, e.g., during a
4147 * delete logical drive opertion. If it is, don't run
4148 * the pending_list.
4149 */
4150 if (atomic_read(&adapter->quiescent) == 0)
4151 mega_runpendq(adapter);
4152 spin_unlock_irqrestore(&adapter->lock, flags);
4153
4154 wait_for_completion(&adapter->int_waitq);
4155
4156 mc->status = rval = adapter->int_status;
4157
4158 /*
4159 * Print a debug message for all failed commands. Applications can use
4160 * this information.
4161 */
4162 if (rval && trace_level) {
4163 dev_info(&adapter->dev->dev, "cmd [%x, %x, %x] status:[%x]\n",
4164 mc->cmd, mc->opcode, mc->subopcode, rval);
4165 }
4166
4167 mutex_unlock(&adapter->int_mtx);
4168 return rval;
4169}
4170
4171static struct scsi_host_template megaraid_template = {
4172 .module = THIS_MODULE,
4173 .name = "MegaRAID",
4174 .proc_name = "megaraid_legacy",
4175 .info = megaraid_info,
4176 .queuecommand = megaraid_queue,
4177 .bios_param = megaraid_biosparam,
4178 .max_sectors = MAX_SECTORS_PER_IO,
4179 .can_queue = MAX_COMMANDS,
4180 .this_id = DEFAULT_INITIATOR_ID,
4181 .sg_tablesize = MAX_SGLIST,
4182 .cmd_per_lun = DEF_CMD_PER_LUN,
4183 .use_clustering = ENABLE_CLUSTERING,
4184 .eh_abort_handler = megaraid_abort,
4185 .eh_device_reset_handler = megaraid_reset,
4186 .eh_bus_reset_handler = megaraid_reset,
4187 .eh_host_reset_handler = megaraid_reset,
4188 .no_write_same = 1,
4189};
4190
4191static int
4192megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4193{
4194 struct Scsi_Host *host;
4195 adapter_t *adapter;
4196 unsigned long mega_baseport, tbase, flag = 0;
4197 u16 subsysid, subsysvid;
4198 u8 pci_bus, pci_dev_func;
4199 int irq, i, j;
4200 int error = -ENODEV;
4201
4202 if (pci_enable_device(pdev))
4203 goto out;
4204 pci_set_master(pdev);
4205
4206 pci_bus = pdev->bus->number;
4207 pci_dev_func = pdev->devfn;
4208
4209 /*
4210 * The megaraid3 stuff reports the ID of the Intel part which is not
4211 * remotely specific to the megaraid
4212 */
4213 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4214 u16 magic;
4215 /*
4216 * Don't fall over the Compaq management cards using the same
4217 * PCI identifier
4218 */
4219 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4220 pdev->subsystem_device == 0xC000)
4221 return -ENODEV;
4222 /* Now check the magic signature byte */
4223 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4224 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4225 return -ENODEV;
4226 /* Ok it is probably a megaraid */
4227 }
4228
4229 /*
4230 * For these vendor and device ids, signature offsets are not
4231 * valid and 64 bit is implicit
4232 */
4233 if (id->driver_data & BOARD_64BIT)
4234 flag |= BOARD_64BIT;
4235 else {
4236 u32 magic64;
4237
4238 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4239 if (magic64 == HBA_SIGNATURE_64BIT)
4240 flag |= BOARD_64BIT;
4241 }
4242
4243 subsysvid = pdev->subsystem_vendor;
4244 subsysid = pdev->subsystem_device;
4245
4246 dev_notice(&pdev->dev, "found 0x%4.04x:0x%4.04x\n",
4247 id->vendor, id->device);
4248
4249 /* Read the base port and IRQ from PCI */
4250 mega_baseport = pci_resource_start(pdev, 0);
4251 irq = pdev->irq;
4252
4253 tbase = mega_baseport;
4254 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4255 flag |= BOARD_MEMMAP;
4256
4257 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4258 dev_warn(&pdev->dev, "mem region busy!\n");
4259 goto out_disable_device;
4260 }
4261
4262 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4263 if (!mega_baseport) {
4264 dev_warn(&pdev->dev, "could not map hba memory\n");
4265 goto out_release_region;
4266 }
4267 } else {
4268 flag |= BOARD_IOMAP;
4269 mega_baseport += 0x10;
4270
4271 if (!request_region(mega_baseport, 16, "megaraid"))
4272 goto out_disable_device;
4273 }
4274
4275 /* Initialize SCSI Host structure */
4276 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4277 if (!host)
4278 goto out_iounmap;
4279
4280 adapter = (adapter_t *)host->hostdata;
4281 memset(adapter, 0, sizeof(adapter_t));
4282
4283 dev_notice(&pdev->dev,
4284 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4285 host->host_no, mega_baseport, irq);
4286
4287 adapter->base = mega_baseport;
4288 if (flag & BOARD_MEMMAP)
4289 adapter->mmio_base = (void __iomem *) mega_baseport;
4290
4291 INIT_LIST_HEAD(&adapter->free_list);
4292 INIT_LIST_HEAD(&adapter->pending_list);
4293 INIT_LIST_HEAD(&adapter->completed_list);
4294
4295 adapter->flag = flag;
4296 spin_lock_init(&adapter->lock);
4297
4298 host->cmd_per_lun = max_cmd_per_lun;
4299 host->max_sectors = max_sectors_per_io;
4300
4301 adapter->dev = pdev;
4302 adapter->host = host;
4303
4304 adapter->host->irq = irq;
4305
4306 if (flag & BOARD_MEMMAP)
4307 adapter->host->base = tbase;
4308 else {
4309 adapter->host->io_port = tbase;
4310 adapter->host->n_io_port = 16;
4311 }
4312
4313 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4314
4315 /*
4316 * Allocate buffer to issue internal commands.
4317 */
4318 adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4319 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4320 if (!adapter->mega_buffer) {
4321 dev_warn(&pdev->dev, "out of RAM\n");
4322 goto out_host_put;
4323 }
4324
4325 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
4326 if (!adapter->scb_list) {
4327 dev_warn(&pdev->dev, "out of RAM\n");
4328 goto out_free_cmd_buffer;
4329 }
4330
4331 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4332 megaraid_isr_memmapped : megaraid_isr_iomapped,
4333 IRQF_SHARED, "megaraid", adapter)) {
4334 dev_warn(&pdev->dev, "Couldn't register IRQ %d!\n", irq);
4335 goto out_free_scb_list;
4336 }
4337
4338 if (mega_setup_mailbox(adapter))
4339 goto out_free_irq;
4340
4341 if (mega_query_adapter(adapter))
4342 goto out_free_mbox;
4343
4344 /*
4345 * Have checks for some buggy f/w
4346 */
4347 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4348 /*
4349 * Which firmware
4350 */
4351 if (!strcmp(adapter->fw_version, "3.00") ||
4352 !strcmp(adapter->fw_version, "3.01")) {
4353
4354 dev_warn(&pdev->dev,
4355 "Your card is a Dell PERC "
4356 "2/SC RAID controller with "
4357 "firmware\nmegaraid: 3.00 or 3.01. "
4358 "This driver is known to have "
4359 "corruption issues\nmegaraid: with "
4360 "those firmware versions on this "
4361 "specific card. In order\nmegaraid: "
4362 "to protect your data, please upgrade "
4363 "your firmware to version\nmegaraid: "
4364 "3.10 or later, available from the "
4365 "Dell Technical Support web\n"
4366 "megaraid: site at\nhttp://support."
4367 "dell.com/us/en/filelib/download/"
4368 "index.asp?fileid=2940\n"
4369 );
4370 }
4371 }
4372
4373 /*
4374 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4375 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4376 * support, since this firmware cannot handle 64 bit
4377 * addressing
4378 */
4379 if ((subsysvid == PCI_VENDOR_ID_HP) &&
4380 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4381 /*
4382 * which firmware
4383 */
4384 if (!strcmp(adapter->fw_version, "H01.07") ||
4385 !strcmp(adapter->fw_version, "H01.08") ||
4386 !strcmp(adapter->fw_version, "H01.09") ) {
4387 dev_warn(&pdev->dev,
4388 "Firmware H.01.07, "
4389 "H.01.08, and H.01.09 on 1M/2M "
4390 "controllers\n"
4391 "do not support 64 bit "
4392 "addressing.\nDISABLING "
4393 "64 bit support.\n");
4394 adapter->flag &= ~BOARD_64BIT;
4395 }
4396 }
4397
4398 if (mega_is_bios_enabled(adapter))
4399 mega_hbas[hba_count].is_bios_enabled = 1;
4400 mega_hbas[hba_count].hostdata_addr = adapter;
4401
4402 /*
4403 * Find out which channel is raid and which is scsi. This is
4404 * for ROMB support.
4405 */
4406 mega_enum_raid_scsi(adapter);
4407
4408 /*
4409 * Find out if a logical drive is set as the boot drive. If
4410 * there is one, will make that as the first logical drive.
4411 * ROMB: Do we have to boot from a physical drive. Then all
4412 * the physical drives would appear before the logical disks.
4413 * Else, all the physical drives would be exported to the mid
4414 * layer after logical drives.
4415 */
4416 mega_get_boot_drv(adapter);
4417
4418 if (adapter->boot_pdrv_enabled) {
4419 j = adapter->product_info.nchannels;
4420 for( i = 0; i < j; i++ )
4421 adapter->logdrv_chan[i] = 0;
4422 for( i = j; i < NVIRT_CHAN + j; i++ )
4423 adapter->logdrv_chan[i] = 1;
4424 } else {
4425 for (i = 0; i < NVIRT_CHAN; i++)
4426 adapter->logdrv_chan[i] = 1;
4427 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4428 adapter->logdrv_chan[i] = 0;
4429 adapter->mega_ch_class <<= NVIRT_CHAN;
4430 }
4431
4432 /*
4433 * Do we support random deletion and addition of logical
4434 * drives
4435 */
4436 adapter->read_ldidmap = 0; /* set it after first logdrv
4437 delete cmd */
4438 adapter->support_random_del = mega_support_random_del(adapter);
4439
4440 /* Initialize SCBs */
4441 if (mega_init_scb(adapter))
4442 goto out_free_mbox;
4443
4444 /*
4445 * Reset the pending commands counter
4446 */
4447 atomic_set(&adapter->pend_cmds, 0);
4448
4449 /*
4450 * Reset the adapter quiescent flag
4451 */
4452 atomic_set(&adapter->quiescent, 0);
4453
4454 hba_soft_state[hba_count] = adapter;
4455
4456 /*
4457 * Fill in the structure which needs to be passed back to the
4458 * application when it does an ioctl() for controller related
4459 * information.
4460 */
4461 i = hba_count;
4462
4463 mcontroller[i].base = mega_baseport;
4464 mcontroller[i].irq = irq;
4465 mcontroller[i].numldrv = adapter->numldrv;
4466 mcontroller[i].pcibus = pci_bus;
4467 mcontroller[i].pcidev = id->device;
4468 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4469 mcontroller[i].pciid = -1;
4470 mcontroller[i].pcivendor = id->vendor;
4471 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4472 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4473
4474
4475 /* Set the Mode of addressing to 64 bit if we can */
4476 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
4477 pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
4478 adapter->has_64bit_addr = 1;
4479 } else {
4480 pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4481 adapter->has_64bit_addr = 0;
4482 }
4483
4484 mutex_init(&adapter->int_mtx);
4485 init_completion(&adapter->int_waitq);
4486
4487 adapter->this_id = DEFAULT_INITIATOR_ID;
4488 adapter->host->this_id = DEFAULT_INITIATOR_ID;
4489
4490#if MEGA_HAVE_CLUSTERING
4491 /*
4492 * Is cluster support enabled on this controller
4493 * Note: In a cluster the HBAs ( the initiators ) will have
4494 * different target IDs and we cannot assume it to be 7. Call
4495 * to mega_support_cluster() will get the target ids also if
4496 * the cluster support is available
4497 */
4498 adapter->has_cluster = mega_support_cluster(adapter);
4499 if (adapter->has_cluster) {
4500 dev_notice(&pdev->dev,
4501 "Cluster driver, initiator id:%d\n",
4502 adapter->this_id);
4503 }
4504#endif
4505
4506 pci_set_drvdata(pdev, host);
4507
4508 mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4509
4510 error = scsi_add_host(host, &pdev->dev);
4511 if (error)
4512 goto out_free_mbox;
4513
4514 scsi_scan_host(host);
4515 hba_count++;
4516 return 0;
4517
4518 out_free_mbox:
4519 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4520 adapter->una_mbox64, adapter->una_mbox64_dma);
4521 out_free_irq:
4522 free_irq(adapter->host->irq, adapter);
4523 out_free_scb_list:
4524 kfree(adapter->scb_list);
4525 out_free_cmd_buffer:
4526 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4527 adapter->mega_buffer, adapter->buf_dma_handle);
4528 out_host_put:
4529 scsi_host_put(host);
4530 out_iounmap:
4531 if (flag & BOARD_MEMMAP)
4532 iounmap((void *)mega_baseport);
4533 out_release_region:
4534 if (flag & BOARD_MEMMAP)
4535 release_mem_region(tbase, 128);
4536 else
4537 release_region(mega_baseport, 16);
4538 out_disable_device:
4539 pci_disable_device(pdev);
4540 out:
4541 return error;
4542}
4543
4544static void
4545__megaraid_shutdown(adapter_t *adapter)
4546{
4547 u_char raw_mbox[sizeof(struct mbox_out)];
4548 mbox_t *mbox = (mbox_t *)raw_mbox;
4549 int i;
4550
4551 /* Flush adapter cache */
4552 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4553 raw_mbox[0] = FLUSH_ADAPTER;
4554
4555 free_irq(adapter->host->irq, adapter);
4556
4557 /* Issue a blocking (interrupts disabled) command to the card */
4558 issue_scb_block(adapter, raw_mbox);
4559
4560 /* Flush disks cache */
4561 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4562 raw_mbox[0] = FLUSH_SYSTEM;
4563
4564 /* Issue a blocking (interrupts disabled) command to the card */
4565 issue_scb_block(adapter, raw_mbox);
4566
4567 if (atomic_read(&adapter->pend_cmds) > 0)
4568 dev_warn(&adapter->dev->dev, "pending commands!!\n");
4569
4570 /*
4571 * Have a delibrate delay to make sure all the caches are
4572 * actually flushed.
4573 */
4574 for (i = 0; i <= 10; i++)
4575 mdelay(1000);
4576}
4577
4578static void
4579megaraid_remove_one(struct pci_dev *pdev)
4580{
4581 struct Scsi_Host *host = pci_get_drvdata(pdev);
4582 adapter_t *adapter = (adapter_t *)host->hostdata;
4583
4584 scsi_remove_host(host);
4585
4586 __megaraid_shutdown(adapter);
4587
4588 /* Free our resources */
4589 if (adapter->flag & BOARD_MEMMAP) {
4590 iounmap((void *)adapter->base);
4591 release_mem_region(adapter->host->base, 128);
4592 } else
4593 release_region(adapter->base, 16);
4594
4595 mega_free_sgl(adapter);
4596
4597#ifdef CONFIG_PROC_FS
4598 if (adapter->controller_proc_dir_entry) {
4599 remove_proc_entry("stat", adapter->controller_proc_dir_entry);
4600 remove_proc_entry("config",
4601 adapter->controller_proc_dir_entry);
4602 remove_proc_entry("mailbox",
4603 adapter->controller_proc_dir_entry);
4604#if MEGA_HAVE_ENH_PROC
4605 remove_proc_entry("rebuild-rate",
4606 adapter->controller_proc_dir_entry);
4607 remove_proc_entry("battery-status",
4608 adapter->controller_proc_dir_entry);
4609
4610 remove_proc_entry("diskdrives-ch0",
4611 adapter->controller_proc_dir_entry);
4612 remove_proc_entry("diskdrives-ch1",
4613 adapter->controller_proc_dir_entry);
4614 remove_proc_entry("diskdrives-ch2",
4615 adapter->controller_proc_dir_entry);
4616 remove_proc_entry("diskdrives-ch3",
4617 adapter->controller_proc_dir_entry);
4618
4619 remove_proc_entry("raiddrives-0-9",
4620 adapter->controller_proc_dir_entry);
4621 remove_proc_entry("raiddrives-10-19",
4622 adapter->controller_proc_dir_entry);
4623 remove_proc_entry("raiddrives-20-29",
4624 adapter->controller_proc_dir_entry);
4625 remove_proc_entry("raiddrives-30-39",
4626 adapter->controller_proc_dir_entry);
4627#endif
4628 {
4629 char buf[12] = { 0 };
4630 sprintf(buf, "hba%d", adapter->host->host_no);
4631 remove_proc_entry(buf, mega_proc_dir_entry);
4632 }
4633 }
4634#endif
4635
4636 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4637 adapter->mega_buffer, adapter->buf_dma_handle);
4638 kfree(adapter->scb_list);
4639 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4640 adapter->una_mbox64, adapter->una_mbox64_dma);
4641
4642 scsi_host_put(host);
4643 pci_disable_device(pdev);
4644
4645 hba_count--;
4646}
4647
4648static void
4649megaraid_shutdown(struct pci_dev *pdev)
4650{
4651 struct Scsi_Host *host = pci_get_drvdata(pdev);
4652 adapter_t *adapter = (adapter_t *)host->hostdata;
4653
4654 __megaraid_shutdown(adapter);
4655}
4656
4657static struct pci_device_id megaraid_pci_tbl[] = {
4658 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
4659 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4660 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
4661 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4662 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
4663 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4664 {0,}
4665};
4666MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
4667
4668static struct pci_driver megaraid_pci_driver = {
4669 .name = "megaraid_legacy",
4670 .id_table = megaraid_pci_tbl,
4671 .probe = megaraid_probe_one,
4672 .remove = megaraid_remove_one,
4673 .shutdown = megaraid_shutdown,
4674};
4675
4676static int __init megaraid_init(void)
4677{
4678 int error;
4679
4680 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
4681 max_cmd_per_lun = MAX_CMD_PER_LUN;
4682 if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
4683 max_mbox_busy_wait = MBOX_BUSY_WAIT;
4684
4685#ifdef CONFIG_PROC_FS
4686 mega_proc_dir_entry = proc_mkdir("megaraid", NULL);
4687 if (!mega_proc_dir_entry) {
4688 printk(KERN_WARNING
4689 "megaraid: failed to create megaraid root\n");
4690 }
4691#endif
4692 error = pci_register_driver(&megaraid_pci_driver);
4693 if (error) {
4694#ifdef CONFIG_PROC_FS
4695 remove_proc_entry("megaraid", NULL);
4696#endif
4697 return error;
4698 }
4699
4700 /*
4701 * Register the driver as a character device, for applications
4702 * to access it for ioctls.
4703 * First argument (major) to register_chrdev implies a dynamic
4704 * major number allocation.
4705 */
4706 major = register_chrdev(0, "megadev_legacy", &megadev_fops);
4707 if (!major) {
4708 printk(KERN_WARNING
4709 "megaraid: failed to register char device\n");
4710 }
4711
4712 return 0;
4713}
4714
4715static void __exit megaraid_exit(void)
4716{
4717 /*
4718 * Unregister the character device interface to the driver.
4719 */
4720 unregister_chrdev(major, "megadev_legacy");
4721
4722 pci_unregister_driver(&megaraid_pci_driver);
4723
4724#ifdef CONFIG_PROC_FS
4725 remove_proc_entry("megaraid", NULL);
4726#endif
4727}
4728
4729module_init(megaraid_init);
4730module_exit(megaraid_exit);
4731
4732/* vi: set ts=8 sw=8 tw=78: */