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