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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __MEGARAID_H__
3#define __MEGARAID_H__
4
5#include <linux/spinlock.h>
6#include <linux/mutex.h>
7#include <scsi/scsi_cmnd.h>
8
9#define MEGARAID_VERSION \
10 "v2.00.4 (Release Date: Thu Feb 9 08:51:30 EST 2006)\n"
11
12/*
13 * Driver features - change the values to enable or disable features in the
14 * driver.
15 */
16
17/*
18 * Command coalescing - This feature allows the driver to be able to combine
19 * two or more commands and issue as one command in order to boost I/O
20 * performance. Useful if the nature of the I/O is sequential. It is not very
21 * useful for random natured I/Os.
22 */
23#define MEGA_HAVE_COALESCING 0
24
25/*
26 * Clustering support - Set this flag if you are planning to use the
27 * clustering services provided by the megaraid controllers and planning to
28 * setup a cluster
29 */
30#define MEGA_HAVE_CLUSTERING 1
31
32/*
33 * Driver statistics - Set this flag if you are interested in statics about
34 * number of I/O completed on each logical drive and how many interrupts
35 * generated. If enabled, this information is available through /proc
36 * interface and through the private ioctl. Setting this flag has a
37 * performance penalty.
38 */
39#define MEGA_HAVE_STATS 0
40
41/*
42 * Enhanced /proc interface - This feature will allow you to have a more
43 * detailed /proc interface for megaraid driver. E.g., a real time update of
44 * the status of the logical drives, battery status, physical drives etc.
45 */
46#define MEGA_HAVE_ENH_PROC 1
47
48#define MAX_DEV_TYPE 32
49
50#define PCI_DEVICE_ID_DISCOVERY 0x000E
51#define PCI_DEVICE_ID_PERC4_DI 0x000F
52#define PCI_DEVICE_ID_PERC4_QC_VERDE 0x0407
53
54#define HBA_SIGNATURE 0x3344
55#define HBA_SIGNATURE_471 0xCCCC
56#define HBA_SIGNATURE_64BIT 0x0299
57
58#define MBOX_BUSY_WAIT 10 /* wait for up to 10 usec for
59 mailbox to be free */
60#define DEFAULT_INITIATOR_ID 7
61
62#define MAX_SGLIST 64 /* max supported in f/w */
63#define MIN_SGLIST 26 /* guaranteed to support these many */
64#define MAX_COMMANDS 126
65#define CMDID_INT_CMDS MAX_COMMANDS+1 /* make sure CMDID_INT_CMDS
66 is less than max commands
67 supported by any f/w */
68
69#define MAX_CDB_LEN 10
70#define MAX_EXT_CDB_LEN 16 /* we support cdb length up to 16 */
71
72#define DEF_CMD_PER_LUN 63
73#define MAX_CMD_PER_LUN MAX_COMMANDS
74#define MAX_FIRMWARE_STATUS 46
75#define MAX_XFER_PER_CMD (64*1024)
76#define MAX_SECTORS_PER_IO 128
77
78#define MAX_LOGICAL_DRIVES_40LD 40
79#define FC_MAX_PHYSICAL_DEVICES 256
80#define MAX_LOGICAL_DRIVES_8LD 8
81#define MAX_CHANNELS 5
82#define MAX_TARGET 15
83#define MAX_PHYSICAL_DRIVES MAX_CHANNELS*MAX_TARGET
84#define MAX_ROW_SIZE_40LD 32
85#define MAX_ROW_SIZE_8LD 8
86#define MAX_SPAN_DEPTH 8
87
88#define NVIRT_CHAN 4 /* # of virtual channels to represent
89 up to 60 logical drives */
90struct mbox_out {
91 /* 0x0 */ u8 cmd;
92 /* 0x1 */ u8 cmdid;
93 /* 0x2 */ u16 numsectors;
94 /* 0x4 */ u32 lba;
95 /* 0x8 */ u32 xferaddr;
96 /* 0xC */ u8 logdrv;
97 /* 0xD */ u8 numsgelements;
98 /* 0xE */ u8 resvd;
99} __attribute__ ((packed));
100
101struct mbox_in {
102 /* 0xF */ volatile u8 busy;
103 /* 0x10 */ volatile u8 numstatus;
104 /* 0x11 */ volatile u8 status;
105 /* 0x12 */ volatile u8 completed[MAX_FIRMWARE_STATUS];
106 volatile u8 poll;
107 volatile u8 ack;
108} __attribute__ ((packed));
109
110typedef struct {
111 struct mbox_out m_out;
112 struct mbox_in m_in;
113} __attribute__ ((packed)) mbox_t;
114
115typedef struct {
116 u32 xfer_segment_lo;
117 u32 xfer_segment_hi;
118 mbox_t mbox;
119} __attribute__ ((packed)) mbox64_t;
120
121
122/*
123 * Passthru definitions
124 */
125#define MAX_REQ_SENSE_LEN 0x20
126
127typedef struct {
128 u8 timeout:3; /* 0=6sec/1=60sec/2=10min/3=3hrs */
129 u8 ars:1;
130 u8 reserved:3;
131 u8 islogical:1;
132 u8 logdrv; /* if islogical == 1 */
133 u8 channel; /* if islogical == 0 */
134 u8 target; /* if islogical == 0 */
135 u8 queuetag; /* unused */
136 u8 queueaction; /* unused */
137 u8 cdb[MAX_CDB_LEN];
138 u8 cdblen;
139 u8 reqsenselen;
140 u8 reqsensearea[MAX_REQ_SENSE_LEN];
141 u8 numsgelements;
142 u8 scsistatus;
143 u32 dataxferaddr;
144 u32 dataxferlen;
145} __attribute__ ((packed)) mega_passthru;
146
147
148/*
149 * Extended passthru: support CDB > 10 bytes
150 */
151typedef struct {
152 u8 timeout:3; /* 0=6sec/1=60sec/2=10min/3=3hrs */
153 u8 ars:1;
154 u8 rsvd1:1;
155 u8 cd_rom:1;
156 u8 rsvd2:1;
157 u8 islogical:1;
158 u8 logdrv; /* if islogical == 1 */
159 u8 channel; /* if islogical == 0 */
160 u8 target; /* if islogical == 0 */
161 u8 queuetag; /* unused */
162 u8 queueaction; /* unused */
163 u8 cdblen;
164 u8 rsvd3;
165 u8 cdb[MAX_EXT_CDB_LEN];
166 u8 numsgelements;
167 u8 status;
168 u8 reqsenselen;
169 u8 reqsensearea[MAX_REQ_SENSE_LEN];
170 u8 rsvd4;
171 u32 dataxferaddr;
172 u32 dataxferlen;
173} __attribute__ ((packed)) mega_ext_passthru;
174
175typedef struct {
176 u64 address;
177 u32 length;
178} __attribute__ ((packed)) mega_sgl64;
179
180typedef struct {
181 u32 address;
182 u32 length;
183} __attribute__ ((packed)) mega_sglist;
184
185
186/* Queued command data */
187typedef struct {
188 int idx;
189 u32 state;
190 struct list_head list;
191 u8 raw_mbox[66];
192 u32 dma_type;
193 u32 dma_direction;
194
195 struct scsi_cmnd *cmd;
196 dma_addr_t dma_h_bulkdata;
197 dma_addr_t dma_h_sgdata;
198
199 mega_sglist *sgl;
200 mega_sgl64 *sgl64;
201 dma_addr_t sgl_dma_addr;
202
203 mega_passthru *pthru;
204 dma_addr_t pthru_dma_addr;
205 mega_ext_passthru *epthru;
206 dma_addr_t epthru_dma_addr;
207} scb_t;
208
209/*
210 * Flags to follow the scb as it transitions between various stages
211 */
212#define SCB_FREE 0x0000 /* on the free list */
213#define SCB_ACTIVE 0x0001 /* off the free list */
214#define SCB_PENDQ 0x0002 /* on the pending queue */
215#define SCB_ISSUED 0x0004 /* issued - owner f/w */
216#define SCB_ABORT 0x0008 /* Got an abort for this one */
217#define SCB_RESET 0x0010 /* Got a reset for this one */
218
219/*
220 * Utilities declare this strcture size as 1024 bytes. So more fields can
221 * be added in future.
222 */
223typedef struct {
224 u32 data_size; /* current size in bytes (not including resvd) */
225
226 u32 config_signature;
227 /* Current value is 0x00282008
228 * 0x28=MAX_LOGICAL_DRIVES,
229 * 0x20=Number of stripes and
230 * 0x08=Number of spans */
231
232 u8 fw_version[16]; /* printable ASCI string */
233 u8 bios_version[16]; /* printable ASCI string */
234 u8 product_name[80]; /* printable ASCI string */
235
236 u8 max_commands; /* Max. concurrent commands supported */
237 u8 nchannels; /* Number of SCSI Channels detected */
238 u8 fc_loop_present; /* Number of Fibre Loops detected */
239 u8 mem_type; /* EDO, FPM, SDRAM etc */
240
241 u32 signature;
242 u16 dram_size; /* In terms of MB */
243 u16 subsysid;
244
245 u16 subsysvid;
246 u8 notify_counters;
247 u8 pad1k[889]; /* 135 + 889 resvd = 1024 total size */
248} __attribute__ ((packed)) mega_product_info;
249
250struct notify {
251 u32 global_counter; /* Any change increments this counter */
252
253 u8 param_counter; /* Indicates any params changed */
254 u8 param_id; /* Param modified - defined below */
255 u16 param_val; /* New val of last param modified */
256
257 u8 write_config_counter; /* write config occurred */
258 u8 write_config_rsvd[3];
259
260 u8 ldrv_op_counter; /* Indicates ldrv op started/completed */
261 u8 ldrv_opid; /* ldrv num */
262 u8 ldrv_opcmd; /* ldrv operation - defined below */
263 u8 ldrv_opstatus; /* status of the operation */
264
265 u8 ldrv_state_counter; /* Indicates change of ldrv state */
266 u8 ldrv_state_id; /* ldrv num */
267 u8 ldrv_state_new; /* New state */
268 u8 ldrv_state_old; /* old state */
269
270 u8 pdrv_state_counter; /* Indicates change of ldrv state */
271 u8 pdrv_state_id; /* pdrv id */
272 u8 pdrv_state_new; /* New state */
273 u8 pdrv_state_old; /* old state */
274
275 u8 pdrv_fmt_counter; /* Indicates pdrv format started/over */
276 u8 pdrv_fmt_id; /* pdrv id */
277 u8 pdrv_fmt_val; /* format started/over */
278 u8 pdrv_fmt_rsvd;
279
280 u8 targ_xfer_counter; /* Indicates SCSI-2 Xfer rate change */
281 u8 targ_xfer_id; /* pdrv Id */
282 u8 targ_xfer_val; /* new Xfer params of last pdrv */
283 u8 targ_xfer_rsvd;
284
285 u8 fcloop_id_chg_counter; /* Indicates loopid changed */
286 u8 fcloopid_pdrvid; /* pdrv id */
287 u8 fcloop_id0; /* loopid on fc loop 0 */
288 u8 fcloop_id1; /* loopid on fc loop 1 */
289
290 u8 fcloop_state_counter; /* Indicates loop state changed */
291 u8 fcloop_state0; /* state of fc loop 0 */
292 u8 fcloop_state1; /* state of fc loop 1 */
293 u8 fcloop_state_rsvd;
294} __attribute__ ((packed));
295
296#define MAX_NOTIFY_SIZE 0x80
297#define CUR_NOTIFY_SIZE sizeof(struct notify)
298
299typedef struct {
300 u32 data_size; /* current size in bytes (not including resvd) */
301
302 struct notify notify;
303
304 u8 notify_rsvd[MAX_NOTIFY_SIZE - CUR_NOTIFY_SIZE];
305
306 u8 rebuild_rate; /* Rebuild rate (0% - 100%) */
307 u8 cache_flush_interval; /* In terms of Seconds */
308 u8 sense_alert;
309 u8 drive_insert_count; /* drive insertion count */
310
311 u8 battery_status;
312 u8 num_ldrv; /* No. of Log Drives configured */
313 u8 recon_state[MAX_LOGICAL_DRIVES_40LD / 8]; /* State of
314 reconstruct */
315 u16 ldrv_op_status[MAX_LOGICAL_DRIVES_40LD / 8]; /* logdrv
316 Status */
317
318 u32 ldrv_size[MAX_LOGICAL_DRIVES_40LD];/* Size of each log drv */
319 u8 ldrv_prop[MAX_LOGICAL_DRIVES_40LD];
320 u8 ldrv_state[MAX_LOGICAL_DRIVES_40LD];/* State of log drives */
321 u8 pdrv_state[FC_MAX_PHYSICAL_DEVICES];/* State of phys drvs. */
322 u16 pdrv_format[FC_MAX_PHYSICAL_DEVICES / 16];
323
324 u8 targ_xfer[80]; /* phys device transfer rate */
325 u8 pad1k[263]; /* 761 + 263reserved = 1024 bytes total size */
326} __attribute__ ((packed)) mega_inquiry3;
327
328
329/* Structures */
330typedef struct {
331 u8 max_commands; /* Max concurrent commands supported */
332 u8 rebuild_rate; /* Rebuild rate - 0% thru 100% */
333 u8 max_targ_per_chan; /* Max targ per channel */
334 u8 nchannels; /* Number of channels on HBA */
335 u8 fw_version[4]; /* Firmware version */
336 u16 age_of_flash; /* Number of times FW has been flashed */
337 u8 chip_set_value; /* Contents of 0xC0000832 */
338 u8 dram_size; /* In MB */
339 u8 cache_flush_interval; /* in seconds */
340 u8 bios_version[4];
341 u8 board_type;
342 u8 sense_alert;
343 u8 write_config_count; /* Increase with every configuration
344 change */
345 u8 drive_inserted_count; /* Increase with every drive inserted
346 */
347 u8 inserted_drive; /* Channel:Id of inserted drive */
348 u8 battery_status; /*
349 * BIT 0: battery module missing
350 * BIT 1: VBAD
351 * BIT 2: temperature high
352 * BIT 3: battery pack missing
353 * BIT 4,5:
354 * 00 - charge complete
355 * 01 - fast charge in progress
356 * 10 - fast charge fail
357 * 11 - undefined
358 * Bit 6: counter > 1000
359 * Bit 7: Undefined
360 */
361 u8 dec_fault_bus_info;
362} __attribute__ ((packed)) mega_adp_info;
363
364
365typedef struct {
366 u8 num_ldrv; /* Number of logical drives configured */
367 u8 rsvd[3];
368 u32 ldrv_size[MAX_LOGICAL_DRIVES_8LD];
369 u8 ldrv_prop[MAX_LOGICAL_DRIVES_8LD];
370 u8 ldrv_state[MAX_LOGICAL_DRIVES_8LD];
371} __attribute__ ((packed)) mega_ldrv_info;
372
373typedef struct {
374 u8 pdrv_state[MAX_PHYSICAL_DRIVES];
375 u8 rsvd;
376} __attribute__ ((packed)) mega_pdrv_info;
377
378/* RAID inquiry: Mailbox command 0x05*/
379typedef struct {
380 mega_adp_info adapter_info;
381 mega_ldrv_info logdrv_info;
382 mega_pdrv_info pdrv_info;
383} __attribute__ ((packed)) mraid_inquiry;
384
385
386/* RAID extended inquiry: Mailbox command 0x04*/
387typedef struct {
388 mraid_inquiry raid_inq;
389 u16 phys_drv_format[MAX_CHANNELS];
390 u8 stack_attn;
391 u8 modem_status;
392 u8 rsvd[2];
393} __attribute__ ((packed)) mraid_ext_inquiry;
394
395
396typedef struct {
397 u8 channel;
398 u8 target;
399}__attribute__ ((packed)) adp_device;
400
401typedef struct {
402 u32 start_blk; /* starting block */
403 u32 num_blks; /* # of blocks */
404 adp_device device[MAX_ROW_SIZE_40LD];
405}__attribute__ ((packed)) adp_span_40ld;
406
407typedef struct {
408 u32 start_blk; /* starting block */
409 u32 num_blks; /* # of blocks */
410 adp_device device[MAX_ROW_SIZE_8LD];
411}__attribute__ ((packed)) adp_span_8ld;
412
413typedef struct {
414 u8 span_depth; /* Total # of spans */
415 u8 level; /* RAID level */
416 u8 read_ahead; /* read ahead, no read ahead, adaptive read
417 ahead */
418 u8 stripe_sz; /* Encoded stripe size */
419 u8 status; /* Status of the logical drive */
420 u8 write_mode; /* write mode, write_through/write_back */
421 u8 direct_io; /* direct io or through cache */
422 u8 row_size; /* Number of stripes in a row */
423} __attribute__ ((packed)) logdrv_param;
424
425typedef struct {
426 logdrv_param lparam;
427 adp_span_40ld span[MAX_SPAN_DEPTH];
428}__attribute__ ((packed)) logdrv_40ld;
429
430typedef struct {
431 logdrv_param lparam;
432 adp_span_8ld span[MAX_SPAN_DEPTH];
433}__attribute__ ((packed)) logdrv_8ld;
434
435typedef struct {
436 u8 type; /* Type of the device */
437 u8 cur_status; /* current status of the device */
438 u8 tag_depth; /* Level of tagging */
439 u8 sync_neg; /* sync negotiation - ENABLE or DISABLE */
440 u32 size; /* configurable size in terms of 512 byte
441 blocks */
442}__attribute__ ((packed)) phys_drv;
443
444typedef struct {
445 u8 nlog_drives; /* number of logical drives */
446 u8 resvd[3];
447 logdrv_40ld ldrv[MAX_LOGICAL_DRIVES_40LD];
448 phys_drv pdrv[MAX_PHYSICAL_DRIVES];
449}__attribute__ ((packed)) disk_array_40ld;
450
451typedef struct {
452 u8 nlog_drives; /* number of logical drives */
453 u8 resvd[3];
454 logdrv_8ld ldrv[MAX_LOGICAL_DRIVES_8LD];
455 phys_drv pdrv[MAX_PHYSICAL_DRIVES];
456}__attribute__ ((packed)) disk_array_8ld;
457
458
459/*
460 * User ioctl structure.
461 * This structure will be used for Traditional Method ioctl interface
462 * commands (0x80),Alternate Buffer Method (0x81) ioctl commands and the
463 * Driver ioctls.
464 * The Driver ioctl interface handles the commands at the driver level,
465 * without being sent to the card.
466 */
467/* system call imposed limit. Change accordingly */
468#define IOCTL_MAX_DATALEN 4096
469
470struct uioctl_t {
471 u32 inlen;
472 u32 outlen;
473 union {
474 u8 fca[16];
475 struct {
476 u8 opcode;
477 u8 subopcode;
478 u16 adapno;
479#if BITS_PER_LONG == 32
480 u8 *buffer;
481 u8 pad[4];
482#endif
483#if BITS_PER_LONG == 64
484 u8 *buffer;
485#endif
486 u32 length;
487 } __attribute__ ((packed)) fcs;
488 } __attribute__ ((packed)) ui;
489 u8 mbox[18]; /* 16 bytes + 2 status bytes */
490 mega_passthru pthru;
491#if BITS_PER_LONG == 32
492 char __user *data; /* buffer <= 4096 for 0x80 commands */
493 char pad[4];
494#endif
495#if BITS_PER_LONG == 64
496 char __user *data;
497#endif
498} __attribute__ ((packed));
499
500/*
501 * struct mcontroller is used to pass information about the controllers in the
502 * system. Its up to the application how to use the information. We are passing
503 * as much info about the cards as possible and useful. Before issuing the
504 * call to find information about the cards, the application needs to issue a
505 * ioctl first to find out the number of controllers in the system.
506 */
507#define MAX_CONTROLLERS 32
508
509struct mcontroller {
510 u64 base;
511 u8 irq;
512 u8 numldrv;
513 u8 pcibus;
514 u16 pcidev;
515 u8 pcifun;
516 u16 pciid;
517 u16 pcivendor;
518 u8 pcislot;
519 u32 uid;
520};
521
522/*
523 * mailbox structure used for internal commands
524 */
525typedef struct {
526 u8 cmd;
527 u8 cmdid;
528 u8 opcode;
529 u8 subopcode;
530 u32 lba;
531 u32 xferaddr;
532 u8 logdrv;
533 u8 rsvd[3];
534 u8 numstatus;
535 u8 status;
536} __attribute__ ((packed)) megacmd_t;
537
538/*
539 * Defines for Driver IOCTL interface
540 */
541#define MEGAIOC_MAGIC 'm'
542
543#define MEGAIOC_QNADAP 'm' /* Query # of adapters */
544#define MEGAIOC_QDRVRVER 'e' /* Query driver version */
545#define MEGAIOC_QADAPINFO 'g' /* Query adapter information */
546#define MKADAP(adapno) (MEGAIOC_MAGIC << 8 | (adapno) )
547#define GETADAP(mkadap) ( (mkadap) ^ MEGAIOC_MAGIC << 8 )
548
549/*
550 * Definition for the new ioctl interface (NIT)
551 */
552
553/*
554 * Vendor specific Group-7 commands
555 */
556#define VENDOR_SPECIFIC_COMMANDS 0xE0
557#define MEGA_INTERNAL_CMD VENDOR_SPECIFIC_COMMANDS + 0x01
558
559/*
560 * The ioctl command. No other command shall be used for this interface
561 */
562#define USCSICMD VENDOR_SPECIFIC_COMMANDS
563
564/*
565 * Data direction flags
566 */
567#define UIOC_RD 0x00001
568#define UIOC_WR 0x00002
569
570/*
571 * ioctl opcodes
572 */
573#define MBOX_CMD 0x00000 /* DCMD or passthru command */
574#define GET_DRIVER_VER 0x10000 /* Get driver version */
575#define GET_N_ADAP 0x20000 /* Get number of adapters */
576#define GET_ADAP_INFO 0x30000 /* Get information about a adapter */
577#define GET_CAP 0x40000 /* Get ioctl capabilities */
578#define GET_STATS 0x50000 /* Get statistics, including error info */
579
580
581/*
582 * The ioctl structure.
583 * MBOX macro converts a nitioctl_t structure to megacmd_t pointer and
584 * MBOX_P macro converts a nitioctl_t pointer to megacmd_t pointer.
585 */
586typedef struct {
587 char signature[8]; /* Must contain "MEGANIT" */
588 u32 opcode; /* opcode for the command */
589 u32 adapno; /* adapter number */
590 union {
591 u8 __raw_mbox[18];
592 void __user *__uaddr; /* xferaddr for non-mbox cmds */
593 }__ua;
594
595#define uioc_rmbox __ua.__raw_mbox
596#define MBOX(uioc) ((megacmd_t *)&((uioc).__ua.__raw_mbox[0]))
597#define MBOX_P(uioc) ((megacmd_t __user *)&((uioc)->__ua.__raw_mbox[0]))
598#define uioc_uaddr __ua.__uaddr
599
600 u32 xferlen; /* xferlen for DCMD and non-mbox
601 commands */
602 u32 flags; /* data direction flags */
603}nitioctl_t;
604
605
606/*
607 * I/O statistics for some applications like SNMP agent. The caller must
608 * provide the number of logical drives for which status should be reported.
609 */
610typedef struct {
611 int num_ldrv; /* Number for logical drives for which the
612 status should be reported. */
613 u32 nreads[MAX_LOGICAL_DRIVES_40LD]; /* number of reads for
614 each logical drive */
615 u32 nreadblocks[MAX_LOGICAL_DRIVES_40LD]; /* number of blocks
616 read for each logical
617 drive */
618 u32 nwrites[MAX_LOGICAL_DRIVES_40LD]; /* number of writes
619 for each logical
620 drive */
621 u32 nwriteblocks[MAX_LOGICAL_DRIVES_40LD]; /* number of blocks
622 writes for each
623 logical drive */
624 u32 rd_errors[MAX_LOGICAL_DRIVES_40LD]; /* number of read
625 errors for each
626 logical drive */
627 u32 wr_errors[MAX_LOGICAL_DRIVES_40LD]; /* number of write
628 errors for each
629 logical drive */
630}megastat_t;
631
632
633struct private_bios_data {
634 u8 geometry:4; /*
635 * bits 0-3 - BIOS geometry
636 * 0x0001 - 1GB
637 * 0x0010 - 2GB
638 * 0x1000 - 8GB
639 * Others values are invalid
640 */
641 u8 unused:4; /* bits 4-7 are unused */
642 u8 boot_drv; /*
643 * logical drive set as boot drive
644 * 0..7 - for 8LD cards
645 * 0..39 - for 40LD cards
646 */
647 u8 rsvd[12];
648 u16 cksum; /* 0-(sum of first 13 bytes of this structure) */
649} __attribute__ ((packed));
650
651
652
653
654/*
655 * Mailbox and firmware commands and subopcodes used in this driver.
656 */
657
658#define MEGA_MBOXCMD_LREAD 0x01
659#define MEGA_MBOXCMD_LWRITE 0x02
660#define MEGA_MBOXCMD_PASSTHRU 0x03
661#define MEGA_MBOXCMD_ADPEXTINQ 0x04
662#define MEGA_MBOXCMD_ADAPTERINQ 0x05
663#define MEGA_MBOXCMD_LREAD64 0xA7
664#define MEGA_MBOXCMD_LWRITE64 0xA8
665#define MEGA_MBOXCMD_PASSTHRU64 0xC3
666#define MEGA_MBOXCMD_EXTPTHRU 0xE3
667
668#define MAIN_MISC_OPCODE 0xA4 /* f/w misc opcode */
669#define GET_MAX_SG_SUPPORT 0x01 /* get max sg len supported by f/w */
670
671#define FC_NEW_CONFIG 0xA1
672#define NC_SUBOP_PRODUCT_INFO 0x0E
673#define NC_SUBOP_ENQUIRY3 0x0F
674#define ENQ3_GET_SOLICITED_FULL 0x02
675#define OP_DCMD_READ_CONFIG 0x04
676#define NEW_READ_CONFIG_8LD 0x67
677#define READ_CONFIG_8LD 0x07
678#define FLUSH_ADAPTER 0x0A
679#define FLUSH_SYSTEM 0xFE
680
681/*
682 * Command for random deletion of logical drives
683 */
684#define FC_DEL_LOGDRV 0xA4 /* f/w command */
685#define OP_SUP_DEL_LOGDRV 0x2A /* is feature supported */
686#define OP_GET_LDID_MAP 0x18 /* get ldid and logdrv number map */
687#define OP_DEL_LOGDRV 0x1C /* delete logical drive */
688
689/*
690 * BIOS commands
691 */
692#define IS_BIOS_ENABLED 0x62
693#define GET_BIOS 0x01
694#define CHNL_CLASS 0xA9
695#define GET_CHNL_CLASS 0x00
696#define SET_CHNL_CLASS 0x01
697#define CH_RAID 0x01
698#define CH_SCSI 0x00
699#define BIOS_PVT_DATA 0x40
700#define GET_BIOS_PVT_DATA 0x00
701
702
703/*
704 * Commands to support clustering
705 */
706#define MEGA_GET_TARGET_ID 0x7D
707#define MEGA_CLUSTER_OP 0x70
708#define MEGA_GET_CLUSTER_MODE 0x02
709#define MEGA_CLUSTER_CMD 0x6E
710#define MEGA_RESERVE_LD 0x01
711#define MEGA_RELEASE_LD 0x02
712#define MEGA_RESET_RESERVATIONS 0x03
713#define MEGA_RESERVATION_STATUS 0x04
714#define MEGA_RESERVE_PD 0x05
715#define MEGA_RELEASE_PD 0x06
716
717
718/*
719 * Module battery status
720 */
721#define MEGA_BATT_MODULE_MISSING 0x01
722#define MEGA_BATT_LOW_VOLTAGE 0x02
723#define MEGA_BATT_TEMP_HIGH 0x04
724#define MEGA_BATT_PACK_MISSING 0x08
725#define MEGA_BATT_CHARGE_MASK 0x30
726#define MEGA_BATT_CHARGE_DONE 0x00
727#define MEGA_BATT_CHARGE_INPROG 0x10
728#define MEGA_BATT_CHARGE_FAIL 0x20
729#define MEGA_BATT_CYCLES_EXCEEDED 0x40
730
731/*
732 * Physical drive states.
733 */
734#define PDRV_UNCNF 0
735#define PDRV_ONLINE 3
736#define PDRV_FAILED 4
737#define PDRV_RBLD 5
738#define PDRV_HOTSPARE 6
739
740
741/*
742 * Raid logical drive states.
743 */
744#define RDRV_OFFLINE 0
745#define RDRV_DEGRADED 1
746#define RDRV_OPTIMAL 2
747#define RDRV_DELETED 3
748
749/*
750 * Read, write and cache policies
751 */
752#define NO_READ_AHEAD 0
753#define READ_AHEAD 1
754#define ADAP_READ_AHEAD 2
755#define WRMODE_WRITE_THRU 0
756#define WRMODE_WRITE_BACK 1
757#define CACHED_IO 0
758#define DIRECT_IO 1
759
760struct megaraid_cmd_priv {
761 struct list_head entry;
762};
763
764#define SCSI_LIST(scp) \
765 (&((struct megaraid_cmd_priv *)scsi_cmd_priv(scp))->entry)
766
767struct scsi_cmd_and_priv {
768 struct scsi_cmnd cmd;
769 struct megaraid_cmd_priv priv;
770};
771
772static inline struct scsi_cmnd *
773megaraid_to_scsi_cmd(struct megaraid_cmd_priv *cmd_priv)
774{
775 /* See also scsi_mq_setup_tags() */
776 BUILD_BUG_ON(sizeof(struct scsi_cmd_and_priv) !=
777 sizeof(struct scsi_cmnd) +
778 sizeof(struct megaraid_cmd_priv));
779
780 return &container_of(cmd_priv, struct scsi_cmd_and_priv, priv)->cmd;
781}
782
783/*
784 * Each controller's soft state
785 */
786typedef struct {
787 int this_id; /* our id, may set to different than 7 if
788 clustering is available */
789 u32 flag;
790
791 unsigned long base;
792 void __iomem *mmio_base;
793
794 /* mbox64 with mbox not aligned on 16-byte boundary */
795 mbox64_t *una_mbox64;
796 dma_addr_t una_mbox64_dma;
797
798 volatile mbox64_t *mbox64;/* ptr to 64-bit mailbox */
799 volatile mbox_t *mbox; /* ptr to standard mailbox */
800 dma_addr_t mbox_dma;
801
802 struct pci_dev *dev;
803
804 struct list_head free_list;
805 struct list_head pending_list;
806 struct list_head completed_list;
807
808 struct Scsi_Host *host;
809
810#define MEGA_BUFFER_SIZE (2*1024)
811 u8 *mega_buffer;
812 dma_addr_t buf_dma_handle;
813
814 mega_product_info product_info;
815
816 u8 max_cmds;
817 scb_t *scb_list;
818
819 atomic_t pend_cmds; /* maintain a counter for pending
820 commands in firmware */
821
822#if MEGA_HAVE_STATS
823 u32 nreads[MAX_LOGICAL_DRIVES_40LD];
824 u32 nreadblocks[MAX_LOGICAL_DRIVES_40LD];
825 u32 nwrites[MAX_LOGICAL_DRIVES_40LD];
826 u32 nwriteblocks[MAX_LOGICAL_DRIVES_40LD];
827 u32 rd_errors[MAX_LOGICAL_DRIVES_40LD];
828 u32 wr_errors[MAX_LOGICAL_DRIVES_40LD];
829#endif
830
831 /* Host adapter parameters */
832 u8 numldrv;
833 u8 fw_version[7];
834 u8 bios_version[7];
835
836#ifdef CONFIG_PROC_FS
837 struct proc_dir_entry *controller_proc_dir_entry;
838#endif
839
840 int has_64bit_addr; /* are we using 64-bit addressing */
841 int support_ext_cdb;
842 int boot_ldrv_enabled;
843 int boot_ldrv;
844 int boot_pdrv_enabled; /* boot from physical drive */
845 int boot_pdrv_ch; /* boot physical drive channel */
846 int boot_pdrv_tgt; /* boot physical drive target */
847
848
849 int support_random_del; /* Do we support random deletion of
850 logdrvs */
851 int read_ldidmap; /* set after logical drive deltion. The
852 logical drive number must be read from the
853 map */
854 atomic_t quiescent; /* a stage reached when delete logical
855 drive needs to be done. Stop
856 sending requests to the hba till
857 delete operation is completed */
858 spinlock_t lock;
859
860 u8 logdrv_chan[MAX_CHANNELS+NVIRT_CHAN]; /* logical drive are on
861 what channels. */
862 int mega_ch_class;
863
864 u8 sglen; /* f/w supported scatter-gather list length */
865
866 scb_t int_scb;
867 struct mutex int_mtx; /* To synchronize the internal
868 commands */
869 int int_status; /* status of internal cmd */
870 struct completion int_waitq; /* wait queue for internal
871 cmds */
872
873 int has_cluster; /* cluster support on this HBA */
874}adapter_t;
875
876
877struct mega_hbas {
878 int is_bios_enabled;
879 adapter_t *hostdata_addr;
880};
881
882
883/*
884 * For state flag. Do not use LSB(8 bits) which are
885 * reserved for storing info about channels.
886 */
887#define IN_ABORT 0x80000000L
888#define IN_RESET 0x40000000L
889#define BOARD_MEMMAP 0x20000000L
890#define BOARD_IOMAP 0x10000000L
891#define BOARD_40LD 0x08000000L
892#define BOARD_64BIT 0x04000000L
893
894#define INTR_VALID 0x40
895
896#define PCI_CONF_AMISIG 0xa0
897#define PCI_CONF_AMISIG64 0xa4
898
899
900#define MEGA_DMA_TYPE_NONE 0xFFFF
901#define MEGA_BULK_DATA 0x0001
902#define MEGA_SGLIST 0x0002
903
904/*
905 * Parameters for the io-mapped controllers
906 */
907
908/* I/O Port offsets */
909#define CMD_PORT 0x00
910#define ACK_PORT 0x00
911#define TOGGLE_PORT 0x01
912#define INTR_PORT 0x0a
913
914#define MBOX_BUSY_PORT 0x00
915#define MBOX_PORT0 0x04
916#define MBOX_PORT1 0x05
917#define MBOX_PORT2 0x06
918#define MBOX_PORT3 0x07
919#define ENABLE_MBOX_REGION 0x0B
920
921/* I/O Port Values */
922#define ISSUE_BYTE 0x10
923#define ACK_BYTE 0x08
924#define ENABLE_INTR_BYTE 0xc0
925#define DISABLE_INTR_BYTE 0x00
926#define VALID_INTR_BYTE 0x40
927#define MBOX_BUSY_BYTE 0x10
928#define ENABLE_MBOX_BYTE 0x00
929
930
931/* Setup some port macros here */
932#define issue_command(adapter) \
933 outb_p(ISSUE_BYTE, (adapter)->base + CMD_PORT)
934
935#define irq_state(adapter) inb_p((adapter)->base + INTR_PORT)
936
937#define set_irq_state(adapter, value) \
938 outb_p((value), (adapter)->base + INTR_PORT)
939
940#define irq_ack(adapter) \
941 outb_p(ACK_BYTE, (adapter)->base + ACK_PORT)
942
943#define irq_enable(adapter) \
944 outb_p(ENABLE_INTR_BYTE, (adapter)->base + TOGGLE_PORT)
945
946#define irq_disable(adapter) \
947 outb_p(DISABLE_INTR_BYTE, (adapter)->base + TOGGLE_PORT)
948
949
950/*
951 * This is our SYSDEP area. All kernel specific detail should be placed here -
952 * as much as possible
953 */
954
955/*
956 * End of SYSDEP area
957 */
958
959const char *megaraid_info (struct Scsi_Host *);
960
961static int mega_query_adapter(adapter_t *);
962static int issue_scb(adapter_t *, scb_t *);
963static int mega_setup_mailbox(adapter_t *);
964
965static int megaraid_queue (struct Scsi_Host *, struct scsi_cmnd *);
966static scb_t * mega_build_cmd(adapter_t *, struct scsi_cmnd *, int *);
967static void __mega_runpendq(adapter_t *);
968static int issue_scb_block(adapter_t *, u_char *);
969
970static irqreturn_t megaraid_isr_memmapped(int, void *);
971static irqreturn_t megaraid_isr_iomapped(int, void *);
972
973static void mega_free_scb(adapter_t *, scb_t *);
974
975static int megaraid_abort(struct scsi_cmnd *);
976static int megaraid_reset(struct scsi_cmnd *);
977static int megaraid_abort_and_reset(adapter_t *, struct scsi_cmnd *, int);
978static int megaraid_biosparam(struct scsi_device *, struct block_device *,
979 sector_t, int []);
980
981static int mega_build_sglist (adapter_t *adapter, scb_t *scb,
982 u32 *buffer, u32 *length);
983static int __mega_busywait_mbox (adapter_t *);
984static void mega_rundoneq (adapter_t *);
985static void mega_cmd_done(adapter_t *, u8 [], int, int);
986static inline void mega_free_sgl (adapter_t *adapter);
987static void mega_8_to_40ld (mraid_inquiry *inquiry,
988 mega_inquiry3 *enquiry3, mega_product_info *);
989
990static int megadev_open (struct inode *, struct file *);
991static int megadev_ioctl (struct file *, unsigned int, unsigned long);
992static int mega_m_to_n(void __user *, nitioctl_t *);
993static int mega_n_to_m(void __user *, megacmd_t *);
994
995static int mega_init_scb (adapter_t *);
996
997static int mega_is_bios_enabled (adapter_t *);
998
999#ifdef CONFIG_PROC_FS
1000static void mega_create_proc_entry(int, struct proc_dir_entry *);
1001static int mega_adapinq(adapter_t *, dma_addr_t);
1002static int mega_internal_dev_inquiry(adapter_t *, u8, u8, dma_addr_t);
1003#endif
1004
1005static int mega_support_ext_cdb(adapter_t *);
1006static mega_passthru* mega_prepare_passthru(adapter_t *, scb_t *,
1007 struct scsi_cmnd *, int, int);
1008static mega_ext_passthru* mega_prepare_extpassthru(adapter_t *,
1009 scb_t *, struct scsi_cmnd *, int, int);
1010static void mega_enum_raid_scsi(adapter_t *);
1011static void mega_get_boot_drv(adapter_t *);
1012static int mega_support_random_del(adapter_t *);
1013static int mega_del_logdrv(adapter_t *, int);
1014static int mega_do_del_logdrv(adapter_t *, int);
1015static void mega_get_max_sgl(adapter_t *);
1016static int mega_internal_command(adapter_t *, megacmd_t *, mega_passthru *);
1017static int mega_support_cluster(adapter_t *);
1018#endif
1019
1020/* vi: set ts=8 sw=8 tw=78: */
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __MEGARAID_H__
3#define __MEGARAID_H__
4
5#include <linux/spinlock.h>
6#include <linux/mutex.h>
7#include <scsi/scsi_cmnd.h>
8
9#define MEGARAID_VERSION \
10 "v2.00.4 (Release Date: Thu Feb 9 08:51:30 EST 2006)\n"
11
12/*
13 * Driver features - change the values to enable or disable features in the
14 * driver.
15 */
16
17/*
18 * Command coalescing - This feature allows the driver to be able to combine
19 * two or more commands and issue as one command in order to boost I/O
20 * performance. Useful if the nature of the I/O is sequential. It is not very
21 * useful for random natured I/Os.
22 */
23#define MEGA_HAVE_COALESCING 0
24
25/*
26 * Clustering support - Set this flag if you are planning to use the
27 * clustering services provided by the megaraid controllers and planning to
28 * setup a cluster
29 */
30#define MEGA_HAVE_CLUSTERING 1
31
32/*
33 * Driver statistics - Set this flag if you are interested in statics about
34 * number of I/O completed on each logical drive and how many interrupts
35 * generated. If enabled, this information is available through /proc
36 * interface and through the private ioctl. Setting this flag has a
37 * performance penalty.
38 */
39#define MEGA_HAVE_STATS 0
40
41/*
42 * Enhanced /proc interface - This feature will allow you to have a more
43 * detailed /proc interface for megaraid driver. E.g., a real time update of
44 * the status of the logical drives, battery status, physical drives etc.
45 */
46#define MEGA_HAVE_ENH_PROC 1
47
48#define MAX_DEV_TYPE 32
49
50#define PCI_DEVICE_ID_DISCOVERY 0x000E
51#define PCI_DEVICE_ID_PERC4_DI 0x000F
52#define PCI_DEVICE_ID_PERC4_QC_VERDE 0x0407
53
54#define HBA_SIGNATURE 0x3344
55#define HBA_SIGNATURE_471 0xCCCC
56#define HBA_SIGNATURE_64BIT 0x0299
57
58#define MBOX_BUSY_WAIT 10 /* wait for up to 10 usec for
59 mailbox to be free */
60#define DEFAULT_INITIATOR_ID 7
61
62#define MAX_SGLIST 64 /* max supported in f/w */
63#define MIN_SGLIST 26 /* guaranteed to support these many */
64#define MAX_COMMANDS 126
65#define CMDID_INT_CMDS MAX_COMMANDS+1 /* make sure CMDID_INT_CMDS
66 is less than max commands
67 supported by any f/w */
68
69#define MAX_CDB_LEN 10
70#define MAX_EXT_CDB_LEN 16 /* we support cdb length up to 16 */
71
72#define DEF_CMD_PER_LUN 63
73#define MAX_CMD_PER_LUN MAX_COMMANDS
74#define MAX_FIRMWARE_STATUS 46
75#define MAX_XFER_PER_CMD (64*1024)
76#define MAX_SECTORS_PER_IO 128
77
78#define MAX_LOGICAL_DRIVES_40LD 40
79#define FC_MAX_PHYSICAL_DEVICES 256
80#define MAX_LOGICAL_DRIVES_8LD 8
81#define MAX_CHANNELS 5
82#define MAX_TARGET 15
83#define MAX_PHYSICAL_DRIVES MAX_CHANNELS*MAX_TARGET
84#define MAX_ROW_SIZE_40LD 32
85#define MAX_ROW_SIZE_8LD 8
86#define MAX_SPAN_DEPTH 8
87
88#define NVIRT_CHAN 4 /* # of virtual channels to represent
89 up to 60 logical drives */
90struct mbox_out {
91 /* 0x0 */ u8 cmd;
92 /* 0x1 */ u8 cmdid;
93 /* 0x2 */ u16 numsectors;
94 /* 0x4 */ u32 lba;
95 /* 0x8 */ u32 xferaddr;
96 /* 0xC */ u8 logdrv;
97 /* 0xD */ u8 numsgelements;
98 /* 0xE */ u8 resvd;
99} __attribute__ ((packed));
100
101struct mbox_in {
102 /* 0xF */ volatile u8 busy;
103 /* 0x10 */ volatile u8 numstatus;
104 /* 0x11 */ volatile u8 status;
105 /* 0x12 */ volatile u8 completed[MAX_FIRMWARE_STATUS];
106 volatile u8 poll;
107 volatile u8 ack;
108} __attribute__ ((packed));
109
110typedef struct {
111 struct mbox_out m_out;
112 struct mbox_in m_in;
113} __attribute__ ((packed)) mbox_t;
114
115typedef struct {
116 u32 xfer_segment_lo;
117 u32 xfer_segment_hi;
118 mbox_t mbox;
119} __attribute__ ((packed)) mbox64_t;
120
121
122/*
123 * Passthru definitions
124 */
125#define MAX_REQ_SENSE_LEN 0x20
126
127typedef struct {
128 u8 timeout:3; /* 0=6sec/1=60sec/2=10min/3=3hrs */
129 u8 ars:1;
130 u8 reserved:3;
131 u8 islogical:1;
132 u8 logdrv; /* if islogical == 1 */
133 u8 channel; /* if islogical == 0 */
134 u8 target; /* if islogical == 0 */
135 u8 queuetag; /* unused */
136 u8 queueaction; /* unused */
137 u8 cdb[MAX_CDB_LEN];
138 u8 cdblen;
139 u8 reqsenselen;
140 u8 reqsensearea[MAX_REQ_SENSE_LEN];
141 u8 numsgelements;
142 u8 scsistatus;
143 u32 dataxferaddr;
144 u32 dataxferlen;
145} __attribute__ ((packed)) mega_passthru;
146
147
148/*
149 * Extended passthru: support CDB > 10 bytes
150 */
151typedef struct {
152 u8 timeout:3; /* 0=6sec/1=60sec/2=10min/3=3hrs */
153 u8 ars:1;
154 u8 rsvd1:1;
155 u8 cd_rom:1;
156 u8 rsvd2:1;
157 u8 islogical:1;
158 u8 logdrv; /* if islogical == 1 */
159 u8 channel; /* if islogical == 0 */
160 u8 target; /* if islogical == 0 */
161 u8 queuetag; /* unused */
162 u8 queueaction; /* unused */
163 u8 cdblen;
164 u8 rsvd3;
165 u8 cdb[MAX_EXT_CDB_LEN];
166 u8 numsgelements;
167 u8 status;
168 u8 reqsenselen;
169 u8 reqsensearea[MAX_REQ_SENSE_LEN];
170 u8 rsvd4;
171 u32 dataxferaddr;
172 u32 dataxferlen;
173} __attribute__ ((packed)) mega_ext_passthru;
174
175typedef struct {
176 u64 address;
177 u32 length;
178} __attribute__ ((packed)) mega_sgl64;
179
180typedef struct {
181 u32 address;
182 u32 length;
183} __attribute__ ((packed)) mega_sglist;
184
185
186/* Queued command data */
187typedef struct {
188 int idx;
189 u32 state;
190 struct list_head list;
191 u8 raw_mbox[66];
192 u32 dma_type;
193 u32 dma_direction;
194
195 struct scsi_cmnd *cmd;
196 dma_addr_t dma_h_bulkdata;
197 dma_addr_t dma_h_sgdata;
198
199 mega_sglist *sgl;
200 mega_sgl64 *sgl64;
201 dma_addr_t sgl_dma_addr;
202
203 mega_passthru *pthru;
204 dma_addr_t pthru_dma_addr;
205 mega_ext_passthru *epthru;
206 dma_addr_t epthru_dma_addr;
207} scb_t;
208
209/*
210 * Flags to follow the scb as it transitions between various stages
211 */
212#define SCB_FREE 0x0000 /* on the free list */
213#define SCB_ACTIVE 0x0001 /* off the free list */
214#define SCB_PENDQ 0x0002 /* on the pending queue */
215#define SCB_ISSUED 0x0004 /* issued - owner f/w */
216#define SCB_ABORT 0x0008 /* Got an abort for this one */
217#define SCB_RESET 0x0010 /* Got a reset for this one */
218
219/*
220 * Utilities declare this strcture size as 1024 bytes. So more fields can
221 * be added in future.
222 */
223typedef struct {
224 u32 data_size; /* current size in bytes (not including resvd) */
225
226 u32 config_signature;
227 /* Current value is 0x00282008
228 * 0x28=MAX_LOGICAL_DRIVES,
229 * 0x20=Number of stripes and
230 * 0x08=Number of spans */
231
232 u8 fw_version[16]; /* printable ASCI string */
233 u8 bios_version[16]; /* printable ASCI string */
234 u8 product_name[80]; /* printable ASCI string */
235
236 u8 max_commands; /* Max. concurrent commands supported */
237 u8 nchannels; /* Number of SCSI Channels detected */
238 u8 fc_loop_present; /* Number of Fibre Loops detected */
239 u8 mem_type; /* EDO, FPM, SDRAM etc */
240
241 u32 signature;
242 u16 dram_size; /* In terms of MB */
243 u16 subsysid;
244
245 u16 subsysvid;
246 u8 notify_counters;
247 u8 pad1k[889]; /* 135 + 889 resvd = 1024 total size */
248} __attribute__ ((packed)) mega_product_info;
249
250struct notify {
251 u32 global_counter; /* Any change increments this counter */
252
253 u8 param_counter; /* Indicates any params changed */
254 u8 param_id; /* Param modified - defined below */
255 u16 param_val; /* New val of last param modified */
256
257 u8 write_config_counter; /* write config occurred */
258 u8 write_config_rsvd[3];
259
260 u8 ldrv_op_counter; /* Indicates ldrv op started/completed */
261 u8 ldrv_opid; /* ldrv num */
262 u8 ldrv_opcmd; /* ldrv operation - defined below */
263 u8 ldrv_opstatus; /* status of the operation */
264
265 u8 ldrv_state_counter; /* Indicates change of ldrv state */
266 u8 ldrv_state_id; /* ldrv num */
267 u8 ldrv_state_new; /* New state */
268 u8 ldrv_state_old; /* old state */
269
270 u8 pdrv_state_counter; /* Indicates change of ldrv state */
271 u8 pdrv_state_id; /* pdrv id */
272 u8 pdrv_state_new; /* New state */
273 u8 pdrv_state_old; /* old state */
274
275 u8 pdrv_fmt_counter; /* Indicates pdrv format started/over */
276 u8 pdrv_fmt_id; /* pdrv id */
277 u8 pdrv_fmt_val; /* format started/over */
278 u8 pdrv_fmt_rsvd;
279
280 u8 targ_xfer_counter; /* Indicates SCSI-2 Xfer rate change */
281 u8 targ_xfer_id; /* pdrv Id */
282 u8 targ_xfer_val; /* new Xfer params of last pdrv */
283 u8 targ_xfer_rsvd;
284
285 u8 fcloop_id_chg_counter; /* Indicates loopid changed */
286 u8 fcloopid_pdrvid; /* pdrv id */
287 u8 fcloop_id0; /* loopid on fc loop 0 */
288 u8 fcloop_id1; /* loopid on fc loop 1 */
289
290 u8 fcloop_state_counter; /* Indicates loop state changed */
291 u8 fcloop_state0; /* state of fc loop 0 */
292 u8 fcloop_state1; /* state of fc loop 1 */
293 u8 fcloop_state_rsvd;
294} __attribute__ ((packed));
295
296#define MAX_NOTIFY_SIZE 0x80
297#define CUR_NOTIFY_SIZE sizeof(struct notify)
298
299typedef struct {
300 u32 data_size; /* current size in bytes (not including resvd) */
301
302 struct notify notify;
303
304 u8 notify_rsvd[MAX_NOTIFY_SIZE - CUR_NOTIFY_SIZE];
305
306 u8 rebuild_rate; /* Rebuild rate (0% - 100%) */
307 u8 cache_flush_interval; /* In terms of Seconds */
308 u8 sense_alert;
309 u8 drive_insert_count; /* drive insertion count */
310
311 u8 battery_status;
312 u8 num_ldrv; /* No. of Log Drives configured */
313 u8 recon_state[MAX_LOGICAL_DRIVES_40LD / 8]; /* State of
314 reconstruct */
315 u16 ldrv_op_status[MAX_LOGICAL_DRIVES_40LD / 8]; /* logdrv
316 Status */
317
318 u32 ldrv_size[MAX_LOGICAL_DRIVES_40LD];/* Size of each log drv */
319 u8 ldrv_prop[MAX_LOGICAL_DRIVES_40LD];
320 u8 ldrv_state[MAX_LOGICAL_DRIVES_40LD];/* State of log drives */
321 u8 pdrv_state[FC_MAX_PHYSICAL_DEVICES];/* State of phys drvs. */
322 u16 pdrv_format[FC_MAX_PHYSICAL_DEVICES / 16];
323
324 u8 targ_xfer[80]; /* phys device transfer rate */
325 u8 pad1k[263]; /* 761 + 263reserved = 1024 bytes total size */
326} __attribute__ ((packed)) mega_inquiry3;
327
328
329/* Structures */
330typedef struct {
331 u8 max_commands; /* Max concurrent commands supported */
332 u8 rebuild_rate; /* Rebuild rate - 0% thru 100% */
333 u8 max_targ_per_chan; /* Max targ per channel */
334 u8 nchannels; /* Number of channels on HBA */
335 u8 fw_version[4]; /* Firmware version */
336 u16 age_of_flash; /* Number of times FW has been flashed */
337 u8 chip_set_value; /* Contents of 0xC0000832 */
338 u8 dram_size; /* In MB */
339 u8 cache_flush_interval; /* in seconds */
340 u8 bios_version[4];
341 u8 board_type;
342 u8 sense_alert;
343 u8 write_config_count; /* Increase with every configuration
344 change */
345 u8 drive_inserted_count; /* Increase with every drive inserted
346 */
347 u8 inserted_drive; /* Channel:Id of inserted drive */
348 u8 battery_status; /*
349 * BIT 0: battery module missing
350 * BIT 1: VBAD
351 * BIT 2: temperature high
352 * BIT 3: battery pack missing
353 * BIT 4,5:
354 * 00 - charge complete
355 * 01 - fast charge in progress
356 * 10 - fast charge fail
357 * 11 - undefined
358 * Bit 6: counter > 1000
359 * Bit 7: Undefined
360 */
361 u8 dec_fault_bus_info;
362} __attribute__ ((packed)) mega_adp_info;
363
364
365typedef struct {
366 u8 num_ldrv; /* Number of logical drives configured */
367 u8 rsvd[3];
368 u32 ldrv_size[MAX_LOGICAL_DRIVES_8LD];
369 u8 ldrv_prop[MAX_LOGICAL_DRIVES_8LD];
370 u8 ldrv_state[MAX_LOGICAL_DRIVES_8LD];
371} __attribute__ ((packed)) mega_ldrv_info;
372
373typedef struct {
374 u8 pdrv_state[MAX_PHYSICAL_DRIVES];
375 u8 rsvd;
376} __attribute__ ((packed)) mega_pdrv_info;
377
378/* RAID inquiry: Mailbox command 0x05*/
379typedef struct {
380 mega_adp_info adapter_info;
381 mega_ldrv_info logdrv_info;
382 mega_pdrv_info pdrv_info;
383} __attribute__ ((packed)) mraid_inquiry;
384
385
386/* RAID extended inquiry: Mailbox command 0x04*/
387typedef struct {
388 mraid_inquiry raid_inq;
389 u16 phys_drv_format[MAX_CHANNELS];
390 u8 stack_attn;
391 u8 modem_status;
392 u8 rsvd[2];
393} __attribute__ ((packed)) mraid_ext_inquiry;
394
395
396typedef struct {
397 u8 channel;
398 u8 target;
399}__attribute__ ((packed)) adp_device;
400
401typedef struct {
402 u32 start_blk; /* starting block */
403 u32 num_blks; /* # of blocks */
404 adp_device device[MAX_ROW_SIZE_40LD];
405}__attribute__ ((packed)) adp_span_40ld;
406
407typedef struct {
408 u32 start_blk; /* starting block */
409 u32 num_blks; /* # of blocks */
410 adp_device device[MAX_ROW_SIZE_8LD];
411}__attribute__ ((packed)) adp_span_8ld;
412
413typedef struct {
414 u8 span_depth; /* Total # of spans */
415 u8 level; /* RAID level */
416 u8 read_ahead; /* read ahead, no read ahead, adaptive read
417 ahead */
418 u8 stripe_sz; /* Encoded stripe size */
419 u8 status; /* Status of the logical drive */
420 u8 write_mode; /* write mode, write_through/write_back */
421 u8 direct_io; /* direct io or through cache */
422 u8 row_size; /* Number of stripes in a row */
423} __attribute__ ((packed)) logdrv_param;
424
425typedef struct {
426 logdrv_param lparam;
427 adp_span_40ld span[MAX_SPAN_DEPTH];
428}__attribute__ ((packed)) logdrv_40ld;
429
430typedef struct {
431 logdrv_param lparam;
432 adp_span_8ld span[MAX_SPAN_DEPTH];
433}__attribute__ ((packed)) logdrv_8ld;
434
435typedef struct {
436 u8 type; /* Type of the device */
437 u8 cur_status; /* current status of the device */
438 u8 tag_depth; /* Level of tagging */
439 u8 sync_neg; /* sync negotiation - ENABLE or DISABLE */
440 u32 size; /* configurable size in terms of 512 byte
441 blocks */
442}__attribute__ ((packed)) phys_drv;
443
444typedef struct {
445 u8 nlog_drives; /* number of logical drives */
446 u8 resvd[3];
447 logdrv_40ld ldrv[MAX_LOGICAL_DRIVES_40LD];
448 phys_drv pdrv[MAX_PHYSICAL_DRIVES];
449}__attribute__ ((packed)) disk_array_40ld;
450
451typedef struct {
452 u8 nlog_drives; /* number of logical drives */
453 u8 resvd[3];
454 logdrv_8ld ldrv[MAX_LOGICAL_DRIVES_8LD];
455 phys_drv pdrv[MAX_PHYSICAL_DRIVES];
456}__attribute__ ((packed)) disk_array_8ld;
457
458
459/*
460 * User ioctl structure.
461 * This structure will be used for Traditional Method ioctl interface
462 * commands (0x80),Alternate Buffer Method (0x81) ioctl commands and the
463 * Driver ioctls.
464 * The Driver ioctl interface handles the commands at the driver level,
465 * without being sent to the card.
466 */
467/* system call imposed limit. Change accordingly */
468#define IOCTL_MAX_DATALEN 4096
469
470struct uioctl_t {
471 u32 inlen;
472 u32 outlen;
473 union {
474 u8 fca[16];
475 struct {
476 u8 opcode;
477 u8 subopcode;
478 u16 adapno;
479#if BITS_PER_LONG == 32
480 u8 *buffer;
481 u8 pad[4];
482#endif
483#if BITS_PER_LONG == 64
484 u8 *buffer;
485#endif
486 u32 length;
487 } __attribute__ ((packed)) fcs;
488 } __attribute__ ((packed)) ui;
489 u8 mbox[18]; /* 16 bytes + 2 status bytes */
490 mega_passthru pthru;
491#if BITS_PER_LONG == 32
492 char __user *data; /* buffer <= 4096 for 0x80 commands */
493 char pad[4];
494#endif
495#if BITS_PER_LONG == 64
496 char __user *data;
497#endif
498} __attribute__ ((packed));
499
500/*
501 * struct mcontroller is used to pass information about the controllers in the
502 * system. Its up to the application how to use the information. We are passing
503 * as much info about the cards as possible and useful. Before issuing the
504 * call to find information about the cards, the application needs to issue a
505 * ioctl first to find out the number of controllers in the system.
506 */
507#define MAX_CONTROLLERS 32
508
509struct mcontroller {
510 u64 base;
511 u8 irq;
512 u8 numldrv;
513 u8 pcibus;
514 u16 pcidev;
515 u8 pcifun;
516 u16 pciid;
517 u16 pcivendor;
518 u8 pcislot;
519 u32 uid;
520};
521
522/*
523 * mailbox structure used for internal commands
524 */
525typedef struct {
526 u8 cmd;
527 u8 cmdid;
528 u8 opcode;
529 u8 subopcode;
530 u32 lba;
531 u32 xferaddr;
532 u8 logdrv;
533 u8 rsvd[3];
534 u8 numstatus;
535 u8 status;
536} __attribute__ ((packed)) megacmd_t;
537
538/*
539 * Defines for Driver IOCTL interface
540 */
541#define MEGAIOC_MAGIC 'm'
542
543#define MEGAIOC_QNADAP 'm' /* Query # of adapters */
544#define MEGAIOC_QDRVRVER 'e' /* Query driver version */
545#define MEGAIOC_QADAPINFO 'g' /* Query adapter information */
546#define MKADAP(adapno) (MEGAIOC_MAGIC << 8 | (adapno) )
547#define GETADAP(mkadap) ( (mkadap) ^ MEGAIOC_MAGIC << 8 )
548
549/*
550 * Definition for the new ioctl interface (NIT)
551 */
552
553/*
554 * Vendor specific Group-7 commands
555 */
556#define VENDOR_SPECIFIC_COMMANDS 0xE0
557#define MEGA_INTERNAL_CMD VENDOR_SPECIFIC_COMMANDS + 0x01
558
559/*
560 * The ioctl command. No other command shall be used for this interface
561 */
562#define USCSICMD VENDOR_SPECIFIC_COMMANDS
563
564/*
565 * Data direction flags
566 */
567#define UIOC_RD 0x00001
568#define UIOC_WR 0x00002
569
570/*
571 * ioctl opcodes
572 */
573#define MBOX_CMD 0x00000 /* DCMD or passthru command */
574#define GET_DRIVER_VER 0x10000 /* Get driver version */
575#define GET_N_ADAP 0x20000 /* Get number of adapters */
576#define GET_ADAP_INFO 0x30000 /* Get information about a adapter */
577#define GET_CAP 0x40000 /* Get ioctl capabilities */
578#define GET_STATS 0x50000 /* Get statistics, including error info */
579
580
581/*
582 * The ioctl structure.
583 * MBOX macro converts a nitioctl_t structure to megacmd_t pointer and
584 * MBOX_P macro converts a nitioctl_t pointer to megacmd_t pointer.
585 */
586typedef struct {
587 char signature[8]; /* Must contain "MEGANIT" */
588 u32 opcode; /* opcode for the command */
589 u32 adapno; /* adapter number */
590 union {
591 u8 __raw_mbox[18];
592 void __user *__uaddr; /* xferaddr for non-mbox cmds */
593 }__ua;
594
595#define uioc_rmbox __ua.__raw_mbox
596#define MBOX(uioc) ((megacmd_t *)&((uioc).__ua.__raw_mbox[0]))
597#define MBOX_P(uioc) ((megacmd_t __user *)&((uioc)->__ua.__raw_mbox[0]))
598#define uioc_uaddr __ua.__uaddr
599
600 u32 xferlen; /* xferlen for DCMD and non-mbox
601 commands */
602 u32 flags; /* data direction flags */
603}nitioctl_t;
604
605
606/*
607 * I/O statistics for some applications like SNMP agent. The caller must
608 * provide the number of logical drives for which status should be reported.
609 */
610typedef struct {
611 int num_ldrv; /* Number for logical drives for which the
612 status should be reported. */
613 u32 nreads[MAX_LOGICAL_DRIVES_40LD]; /* number of reads for
614 each logical drive */
615 u32 nreadblocks[MAX_LOGICAL_DRIVES_40LD]; /* number of blocks
616 read for each logical
617 drive */
618 u32 nwrites[MAX_LOGICAL_DRIVES_40LD]; /* number of writes
619 for each logical
620 drive */
621 u32 nwriteblocks[MAX_LOGICAL_DRIVES_40LD]; /* number of blocks
622 writes for each
623 logical drive */
624 u32 rd_errors[MAX_LOGICAL_DRIVES_40LD]; /* number of read
625 errors for each
626 logical drive */
627 u32 wr_errors[MAX_LOGICAL_DRIVES_40LD]; /* number of write
628 errors for each
629 logical drive */
630}megastat_t;
631
632
633struct private_bios_data {
634 u8 geometry:4; /*
635 * bits 0-3 - BIOS geometry
636 * 0x0001 - 1GB
637 * 0x0010 - 2GB
638 * 0x1000 - 8GB
639 * Others values are invalid
640 */
641 u8 unused:4; /* bits 4-7 are unused */
642 u8 boot_drv; /*
643 * logical drive set as boot drive
644 * 0..7 - for 8LD cards
645 * 0..39 - for 40LD cards
646 */
647 u8 rsvd[12];
648 u16 cksum; /* 0-(sum of first 13 bytes of this structure) */
649} __attribute__ ((packed));
650
651
652
653
654/*
655 * Mailbox and firmware commands and subopcodes used in this driver.
656 */
657
658#define MEGA_MBOXCMD_LREAD 0x01
659#define MEGA_MBOXCMD_LWRITE 0x02
660#define MEGA_MBOXCMD_PASSTHRU 0x03
661#define MEGA_MBOXCMD_ADPEXTINQ 0x04
662#define MEGA_MBOXCMD_ADAPTERINQ 0x05
663#define MEGA_MBOXCMD_LREAD64 0xA7
664#define MEGA_MBOXCMD_LWRITE64 0xA8
665#define MEGA_MBOXCMD_PASSTHRU64 0xC3
666#define MEGA_MBOXCMD_EXTPTHRU 0xE3
667
668#define MAIN_MISC_OPCODE 0xA4 /* f/w misc opcode */
669#define GET_MAX_SG_SUPPORT 0x01 /* get max sg len supported by f/w */
670
671#define FC_NEW_CONFIG 0xA1
672#define NC_SUBOP_PRODUCT_INFO 0x0E
673#define NC_SUBOP_ENQUIRY3 0x0F
674#define ENQ3_GET_SOLICITED_FULL 0x02
675#define OP_DCMD_READ_CONFIG 0x04
676#define NEW_READ_CONFIG_8LD 0x67
677#define READ_CONFIG_8LD 0x07
678#define FLUSH_ADAPTER 0x0A
679#define FLUSH_SYSTEM 0xFE
680
681/*
682 * Command for random deletion of logical drives
683 */
684#define FC_DEL_LOGDRV 0xA4 /* f/w command */
685#define OP_SUP_DEL_LOGDRV 0x2A /* is feature supported */
686#define OP_GET_LDID_MAP 0x18 /* get ldid and logdrv number map */
687#define OP_DEL_LOGDRV 0x1C /* delete logical drive */
688
689/*
690 * BIOS commands
691 */
692#define IS_BIOS_ENABLED 0x62
693#define GET_BIOS 0x01
694#define CHNL_CLASS 0xA9
695#define GET_CHNL_CLASS 0x00
696#define SET_CHNL_CLASS 0x01
697#define CH_RAID 0x01
698#define CH_SCSI 0x00
699#define BIOS_PVT_DATA 0x40
700#define GET_BIOS_PVT_DATA 0x00
701
702
703/*
704 * Commands to support clustering
705 */
706#define MEGA_GET_TARGET_ID 0x7D
707#define MEGA_CLUSTER_OP 0x70
708#define MEGA_GET_CLUSTER_MODE 0x02
709#define MEGA_CLUSTER_CMD 0x6E
710#define MEGA_RESERVE_LD 0x01
711#define MEGA_RELEASE_LD 0x02
712#define MEGA_RESET_RESERVATIONS 0x03
713#define MEGA_RESERVATION_STATUS 0x04
714#define MEGA_RESERVE_PD 0x05
715#define MEGA_RELEASE_PD 0x06
716
717
718/*
719 * Module battery status
720 */
721#define MEGA_BATT_MODULE_MISSING 0x01
722#define MEGA_BATT_LOW_VOLTAGE 0x02
723#define MEGA_BATT_TEMP_HIGH 0x04
724#define MEGA_BATT_PACK_MISSING 0x08
725#define MEGA_BATT_CHARGE_MASK 0x30
726#define MEGA_BATT_CHARGE_DONE 0x00
727#define MEGA_BATT_CHARGE_INPROG 0x10
728#define MEGA_BATT_CHARGE_FAIL 0x20
729#define MEGA_BATT_CYCLES_EXCEEDED 0x40
730
731/*
732 * Physical drive states.
733 */
734#define PDRV_UNCNF 0
735#define PDRV_ONLINE 3
736#define PDRV_FAILED 4
737#define PDRV_RBLD 5
738#define PDRV_HOTSPARE 6
739
740
741/*
742 * Raid logical drive states.
743 */
744#define RDRV_OFFLINE 0
745#define RDRV_DEGRADED 1
746#define RDRV_OPTIMAL 2
747#define RDRV_DELETED 3
748
749/*
750 * Read, write and cache policies
751 */
752#define NO_READ_AHEAD 0
753#define READ_AHEAD 1
754#define ADAP_READ_AHEAD 2
755#define WRMODE_WRITE_THRU 0
756#define WRMODE_WRITE_BACK 1
757#define CACHED_IO 0
758#define DIRECT_IO 1
759
760struct megaraid_cmd_priv {
761 struct list_head entry;
762};
763
764#define SCSI_LIST(scp) \
765 (&((struct megaraid_cmd_priv *)scsi_cmd_priv(scp))->entry)
766
767struct scsi_cmd_and_priv {
768 struct scsi_cmnd cmd;
769 struct megaraid_cmd_priv priv;
770};
771
772static inline struct scsi_cmnd *
773megaraid_to_scsi_cmd(struct megaraid_cmd_priv *cmd_priv)
774{
775 /* See also scsi_mq_setup_tags() */
776 BUILD_BUG_ON(sizeof(struct scsi_cmd_and_priv) !=
777 sizeof(struct scsi_cmnd) +
778 sizeof(struct megaraid_cmd_priv));
779
780 return &container_of(cmd_priv, struct scsi_cmd_and_priv, priv)->cmd;
781}
782
783/*
784 * Each controller's soft state
785 */
786typedef struct {
787 int this_id; /* our id, may set to different than 7 if
788 clustering is available */
789 u32 flag;
790
791 unsigned long base;
792 void __iomem *mmio_base;
793
794 /* mbox64 with mbox not aligned on 16-byte boundary */
795 mbox64_t *una_mbox64;
796 dma_addr_t una_mbox64_dma;
797
798 volatile mbox64_t *mbox64;/* ptr to 64-bit mailbox */
799 volatile mbox_t *mbox; /* ptr to standard mailbox */
800 dma_addr_t mbox_dma;
801
802 struct pci_dev *dev;
803
804 struct list_head free_list;
805 struct list_head pending_list;
806 struct list_head completed_list;
807
808 struct Scsi_Host *host;
809
810#define MEGA_BUFFER_SIZE (2*1024)
811 u8 *mega_buffer;
812 dma_addr_t buf_dma_handle;
813
814 mega_product_info product_info;
815
816 u8 max_cmds;
817 scb_t *scb_list;
818
819 atomic_t pend_cmds; /* maintain a counter for pending
820 commands in firmware */
821
822#if MEGA_HAVE_STATS
823 u32 nreads[MAX_LOGICAL_DRIVES_40LD];
824 u32 nreadblocks[MAX_LOGICAL_DRIVES_40LD];
825 u32 nwrites[MAX_LOGICAL_DRIVES_40LD];
826 u32 nwriteblocks[MAX_LOGICAL_DRIVES_40LD];
827 u32 rd_errors[MAX_LOGICAL_DRIVES_40LD];
828 u32 wr_errors[MAX_LOGICAL_DRIVES_40LD];
829#endif
830
831 /* Host adapter parameters */
832 u8 numldrv;
833 u8 fw_version[7];
834 u8 bios_version[7];
835
836#ifdef CONFIG_PROC_FS
837 struct proc_dir_entry *controller_proc_dir_entry;
838#endif
839
840 int has_64bit_addr; /* are we using 64-bit addressing */
841 int support_ext_cdb;
842 int boot_ldrv_enabled;
843 int boot_ldrv;
844 int boot_pdrv_enabled; /* boot from physical drive */
845 int boot_pdrv_ch; /* boot physical drive channel */
846 int boot_pdrv_tgt; /* boot physical drive target */
847
848
849 int support_random_del; /* Do we support random deletion of
850 logdrvs */
851 int read_ldidmap; /* set after logical drive deltion. The
852 logical drive number must be read from the
853 map */
854 atomic_t quiescent; /* a stage reached when delete logical
855 drive needs to be done. Stop
856 sending requests to the hba till
857 delete operation is completed */
858 spinlock_t lock;
859
860 u8 logdrv_chan[MAX_CHANNELS+NVIRT_CHAN]; /* logical drive are on
861 what channels. */
862 int mega_ch_class;
863
864 u8 sglen; /* f/w supported scatter-gather list length */
865
866 scb_t int_scb;
867 struct mutex int_mtx; /* To synchronize the internal
868 commands */
869 int int_status; /* status of internal cmd */
870 struct completion int_waitq; /* wait queue for internal
871 cmds */
872
873 int has_cluster; /* cluster support on this HBA */
874}adapter_t;
875
876
877struct mega_hbas {
878 int is_bios_enabled;
879 adapter_t *hostdata_addr;
880};
881
882
883/*
884 * For state flag. Do not use LSB(8 bits) which are
885 * reserved for storing info about channels.
886 */
887#define IN_ABORT 0x80000000L
888#define IN_RESET 0x40000000L
889#define BOARD_MEMMAP 0x20000000L
890#define BOARD_IOMAP 0x10000000L
891#define BOARD_40LD 0x08000000L
892#define BOARD_64BIT 0x04000000L
893
894#define INTR_VALID 0x40
895
896#define PCI_CONF_AMISIG 0xa0
897#define PCI_CONF_AMISIG64 0xa4
898
899
900#define MEGA_DMA_TYPE_NONE 0xFFFF
901#define MEGA_BULK_DATA 0x0001
902#define MEGA_SGLIST 0x0002
903
904/*
905 * Parameters for the io-mapped controllers
906 */
907
908/* I/O Port offsets */
909#define CMD_PORT 0x00
910#define ACK_PORT 0x00
911#define TOGGLE_PORT 0x01
912#define INTR_PORT 0x0a
913
914#define MBOX_BUSY_PORT 0x00
915#define MBOX_PORT0 0x04
916#define MBOX_PORT1 0x05
917#define MBOX_PORT2 0x06
918#define MBOX_PORT3 0x07
919#define ENABLE_MBOX_REGION 0x0B
920
921/* I/O Port Values */
922#define ISSUE_BYTE 0x10
923#define ACK_BYTE 0x08
924#define ENABLE_INTR_BYTE 0xc0
925#define DISABLE_INTR_BYTE 0x00
926#define VALID_INTR_BYTE 0x40
927#define MBOX_BUSY_BYTE 0x10
928#define ENABLE_MBOX_BYTE 0x00
929
930
931/* Setup some port macros here */
932#define issue_command(adapter) \
933 outb_p(ISSUE_BYTE, (adapter)->base + CMD_PORT)
934
935#define irq_state(adapter) inb_p((adapter)->base + INTR_PORT)
936
937#define set_irq_state(adapter, value) \
938 outb_p((value), (adapter)->base + INTR_PORT)
939
940#define irq_ack(adapter) \
941 outb_p(ACK_BYTE, (adapter)->base + ACK_PORT)
942
943#define irq_enable(adapter) \
944 outb_p(ENABLE_INTR_BYTE, (adapter)->base + TOGGLE_PORT)
945
946#define irq_disable(adapter) \
947 outb_p(DISABLE_INTR_BYTE, (adapter)->base + TOGGLE_PORT)
948
949
950/*
951 * This is our SYSDEP area. All kernel specific detail should be placed here -
952 * as much as possible
953 */
954
955/*
956 * End of SYSDEP area
957 */
958
959const char *megaraid_info (struct Scsi_Host *);
960
961static int mega_query_adapter(adapter_t *);
962static int issue_scb(adapter_t *, scb_t *);
963static int mega_setup_mailbox(adapter_t *);
964
965static int megaraid_queue (struct Scsi_Host *, struct scsi_cmnd *);
966static scb_t * mega_build_cmd(adapter_t *, struct scsi_cmnd *, int *);
967static void __mega_runpendq(adapter_t *);
968static int issue_scb_block(adapter_t *, u_char *);
969
970static irqreturn_t megaraid_isr_memmapped(int, void *);
971static irqreturn_t megaraid_isr_iomapped(int, void *);
972
973static void mega_free_scb(adapter_t *, scb_t *);
974
975static int megaraid_abort(struct scsi_cmnd *);
976static int megaraid_reset(struct scsi_cmnd *);
977static int megaraid_abort_and_reset(adapter_t *, struct scsi_cmnd *, int);
978static int megaraid_biosparam(struct scsi_device *, struct block_device *,
979 sector_t, int []);
980
981static int mega_build_sglist (adapter_t *adapter, scb_t *scb,
982 u32 *buffer, u32 *length);
983static int __mega_busywait_mbox (adapter_t *);
984static void mega_rundoneq (adapter_t *);
985static void mega_cmd_done(adapter_t *, u8 [], int, int);
986static inline void mega_free_sgl (adapter_t *adapter);
987static void mega_8_to_40ld (mraid_inquiry *inquiry,
988 mega_inquiry3 *enquiry3, mega_product_info *);
989
990static int megadev_open (struct inode *, struct file *);
991static int megadev_ioctl (struct file *, unsigned int, unsigned long);
992static int mega_m_to_n(void __user *, nitioctl_t *);
993static int mega_n_to_m(void __user *, megacmd_t *);
994
995static int mega_init_scb (adapter_t *);
996
997static int mega_is_bios_enabled (adapter_t *);
998
999#ifdef CONFIG_PROC_FS
1000static void mega_create_proc_entry(int, struct proc_dir_entry *);
1001static int mega_adapinq(adapter_t *, dma_addr_t);
1002static int mega_internal_dev_inquiry(adapter_t *, u8, u8, dma_addr_t);
1003#endif
1004
1005static int mega_support_ext_cdb(adapter_t *);
1006static mega_passthru* mega_prepare_passthru(adapter_t *, scb_t *,
1007 struct scsi_cmnd *, int, int);
1008static mega_ext_passthru* mega_prepare_extpassthru(adapter_t *,
1009 scb_t *, struct scsi_cmnd *, int, int);
1010static void mega_enum_raid_scsi(adapter_t *);
1011static void mega_get_boot_drv(adapter_t *);
1012static int mega_support_random_del(adapter_t *);
1013static int mega_del_logdrv(adapter_t *, int);
1014static int mega_do_del_logdrv(adapter_t *, int);
1015static void mega_get_max_sgl(adapter_t *);
1016static int mega_internal_command(adapter_t *, megacmd_t *, mega_passthru *);
1017static int mega_support_cluster(adapter_t *);
1018#endif
1019
1020/* vi: set ts=8 sw=8 tw=78: */