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[SCSI] stex: switch to block timeout
[net-next-2.6.git] / drivers / scsi / stex.c
CommitLineData
5a25ba16
JG		 1/*
2 * SuperTrak EX Series Storage Controller driver for Linux
3 *
4 * Copyright (C) 2005, 2006 Promise Technology Inc.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 * Written By:
12 * Ed Lin <promise_linux@promise.com>
13 *
5a25ba16
JG		 14 */
15
16#include <linux/init.h>
17#include <linux/errno.h>
18#include <linux/kernel.h>
19#include <linux/delay.h>
5a25ba16
JG		 20#include <linux/time.h>
21#include <linux/pci.h>
22#include <linux/blkdev.h>
23#include <linux/interrupt.h>
24#include <linux/types.h>
25#include <linux/module.h>
26#include <linux/spinlock.h>
27#include <asm/io.h>
28#include <asm/irq.h>
29#include <asm/byteorder.h>
30#include <scsi/scsi.h>
31#include <scsi/scsi_device.h>
32#include <scsi/scsi_cmnd.h>
33#include <scsi/scsi_host.h>
cf355883 34#include <scsi/scsi_tcq.h>
c25da0af 35#include <scsi/scsi_dbg.h>
11002fbc 36#include <scsi/scsi_eh.h>
5a25ba16
JG		 37
38#define DRV_NAME "stex"
c25da0af 39#define ST_DRIVER_VERSION "3.6.0000.1"
fb4f66be 40#define ST_VER_MAJOR 3
c25da0af 41#define ST_VER_MINOR 6
5a25ba16 42#define ST_OEM 0
fb4f66be 43#define ST_BUILD_VER 1
5a25ba16
JG		 44
45enum {
46 /* MU register offset */
47 IMR0 = 0x10, /* MU_INBOUND_MESSAGE_REG0 */
48 IMR1 = 0x14, /* MU_INBOUND_MESSAGE_REG1 */
49 OMR0 = 0x18, /* MU_OUTBOUND_MESSAGE_REG0 */
50 OMR1 = 0x1c, /* MU_OUTBOUND_MESSAGE_REG1 */
51 IDBL = 0x20, /* MU_INBOUND_DOORBELL */
52 IIS = 0x24, /* MU_INBOUND_INTERRUPT_STATUS */
53 IIM = 0x28, /* MU_INBOUND_INTERRUPT_MASK */
54 ODBL = 0x2c, /* MU_OUTBOUND_DOORBELL */
55 OIS = 0x30, /* MU_OUTBOUND_INTERRUPT_STATUS */
56 OIM = 0x3c, /* MU_OUTBOUND_INTERRUPT_MASK */
57
58 /* MU register value */
59 MU_INBOUND_DOORBELL_HANDSHAKE = 1,
60 MU_INBOUND_DOORBELL_REQHEADCHANGED = 2,
61 MU_INBOUND_DOORBELL_STATUSTAILCHANGED = 4,
62 MU_INBOUND_DOORBELL_HMUSTOPPED = 8,
63 MU_INBOUND_DOORBELL_RESET = 16,
64
65 MU_OUTBOUND_DOORBELL_HANDSHAKE = 1,
66 MU_OUTBOUND_DOORBELL_REQUESTTAILCHANGED = 2,
67 MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED = 4,
68 MU_OUTBOUND_DOORBELL_BUSCHANGE = 8,
69 MU_OUTBOUND_DOORBELL_HASEVENT = 16,
70
71 /* MU status code */
72 MU_STATE_STARTING = 1,
73 MU_STATE_FMU_READY_FOR_HANDSHAKE = 2,
74 MU_STATE_SEND_HANDSHAKE_FRAME = 3,
75 MU_STATE_STARTED = 4,
76 MU_STATE_RESETTING = 5,
77
76fbf96f 78 MU_MAX_DELAY = 120,
5a25ba16 79 MU_HANDSHAKE_SIGNATURE = 0x55aaaa55,
529e7a62 80 MU_HANDSHAKE_SIGNATURE_HALF = 0x5a5a0000,
76fbf96f 81 MU_HARD_RESET_WAIT = 30000,
5a25ba16
JG		 82 HMU_PARTNER_TYPE = 2,
83
84 /* firmware returned values */
85 SRB_STATUS_SUCCESS = 0x01,
86 SRB_STATUS_ERROR = 0x04,
87 SRB_STATUS_BUSY = 0x05,
88 SRB_STATUS_INVALID_REQUEST = 0x06,
89 SRB_STATUS_SELECTION_TIMEOUT = 0x0A,
90 SRB_SEE_SENSE = 0x80,
91
92 /* task attribute */
93 TASK_ATTRIBUTE_SIMPLE = 0x0,
94 TASK_ATTRIBUTE_HEADOFQUEUE = 0x1,
95 TASK_ATTRIBUTE_ORDERED = 0x2,
96 TASK_ATTRIBUTE_ACA = 0x4,
97
98 /* request count, etc. */
99 MU_MAX_REQUEST = 32,
5a25ba16
JG		 100
101 /* one message wasted, use MU_MAX_REQUEST+1
102 to handle MU_MAX_REQUEST messages */
103 MU_REQ_COUNT = (MU_MAX_REQUEST + 1),
104 MU_STATUS_COUNT = (MU_MAX_REQUEST + 1),
105
106 STEX_CDB_LENGTH = MAX_COMMAND_SIZE,
107 REQ_VARIABLE_LEN = 1024,
108 STATUS_VAR_LEN = 128,
109 ST_CAN_QUEUE = MU_MAX_REQUEST,
110 ST_CMD_PER_LUN = MU_MAX_REQUEST,
111 ST_MAX_SG = 32,
112
113 /* sg flags */
114 SG_CF_EOT = 0x80, /* end of table */
115 SG_CF_64B = 0x40, /* 64 bit item */
116 SG_CF_HOST = 0x20, /* sg in host memory */
117
5a25ba16
JG		 118 st_shasta = 0,
119 st_vsc = 1,
94e9108b
EL		 120 st_vsc1 = 2,
121 st_yosemite = 3,
5a25ba16
JG		 122
123 PASSTHRU_REQ_TYPE = 0x00000001,
124 PASSTHRU_REQ_NO_WAKEUP = 0x00000100,
125 ST_INTERNAL_TIMEOUT = 30,
126
fb4f66be
EL		 127 ST_TO_CMD = 0,
128 ST_FROM_CMD = 1,
129
5a25ba16 130 /* vendor specific commands of Promise */
fb4f66be
EL		 131 MGT_CMD = 0xd8,
132 SINBAND_MGT_CMD = 0xd9,
5a25ba16
JG		 133 ARRAY_CMD = 0xe0,
134 CONTROLLER_CMD = 0xe1,
135 DEBUGGING_CMD = 0xe2,
136 PASSTHRU_CMD = 0xe3,
137
138 PASSTHRU_GET_ADAPTER = 0x05,
139 PASSTHRU_GET_DRVVER = 0x10,
fb4f66be
EL		 140
141 CTLR_CONFIG_CMD = 0x03,
142 CTLR_SHUTDOWN = 0x0d,
143
5a25ba16
JG		 144 CTLR_POWER_STATE_CHANGE = 0x0e,
145 CTLR_POWER_SAVING = 0x01,
146
147 PASSTHRU_SIGNATURE = 0x4e415041,
fb4f66be 148 MGT_CMD_SIGNATURE = 0xba,
5a25ba16
JG		 149
150 INQUIRY_EVPD = 0x01,
94e9108b
EL		 151
152 ST_ADDITIONAL_MEM = 0x200000,
5a25ba16
JG		 153};
154
fb4f66be
EL		 155/* SCSI inquiry data */
156typedef struct st_inq {
157 u8 DeviceType :5;
158 u8 DeviceTypeQualifier :3;
159 u8 DeviceTypeModifier :7;
160 u8 RemovableMedia :1;
161 u8 Versions;
162 u8 ResponseDataFormat :4;
163 u8 HiSupport :1;
164 u8 NormACA :1;
165 u8 ReservedBit :1;
166 u8 AERC :1;
167 u8 AdditionalLength;
168 u8 Reserved[2];
169 u8 SoftReset :1;
170 u8 CommandQueue :1;
171 u8 Reserved2 :1;
172 u8 LinkedCommands :1;
173 u8 Synchronous :1;
174 u8 Wide16Bit :1;
175 u8 Wide32Bit :1;
176 u8 RelativeAddressing :1;
177 u8 VendorId[8];
178 u8 ProductId[16];
179 u8 ProductRevisionLevel[4];
180 u8 VendorSpecific[20];
181 u8 Reserved3[40];
182} ST_INQ;
183
5a25ba16
JG		 184struct st_sgitem {
185 u8 ctrl; /* SG_CF_xxx */
186 u8 reserved[3];
187 __le32 count;
188 __le32 addr;
189 __le32 addr_hi;
190};
191
192struct st_sgtable {
193 __le16 sg_count;
194 __le16 max_sg_count;
195 __le32 sz_in_byte;
196 struct st_sgitem table[ST_MAX_SG];
197};
198
199struct handshake_frame {
200 __le32 rb_phy; /* request payload queue physical address */
201 __le32 rb_phy_hi;
202 __le16 req_sz; /* size of each request payload */
203 __le16 req_cnt; /* count of reqs the buffer can hold */
204 __le16 status_sz; /* size of each status payload */
205 __le16 status_cnt; /* count of status the buffer can hold */
206 __le32 hosttime; /* seconds from Jan 1, 1970 (GMT) */
207 __le32 hosttime_hi;
208 u8 partner_type; /* who sends this frame */
209 u8 reserved0[7];
210 __le32 partner_ver_major;
211 __le32 partner_ver_minor;
212 __le32 partner_ver_oem;
213 __le32 partner_ver_build;
94e9108b
EL		 214 __le32 extra_offset; /* NEW */
215 __le32 extra_size; /* NEW */
216 u32 reserved1[2];
5a25ba16
JG		 217};
218
219struct req_msg {
220 __le16 tag;
221 u8 lun;
222 u8 target;
223 u8 task_attr;
224 u8 task_manage;
225 u8 prd_entry;
f903d7b7 226 u8 payload_sz; /* payload size in 4-byte, not used */
5a25ba16
JG		 227 u8 cdb[STEX_CDB_LENGTH];
228 u8 variable[REQ_VARIABLE_LEN];
229};
230
231struct status_msg {
232 __le16 tag;
233 u8 lun;
234 u8 target;
235 u8 srb_status;
236 u8 scsi_status;
237 u8 reserved;
238 u8 payload_sz; /* payload size in 4-byte */
239 u8 variable[STATUS_VAR_LEN];
240};
241
242struct ver_info {
243 u32 major;
244 u32 minor;
245 u32 oem;
246 u32 build;
247 u32 reserved[2];
248};
249
250struct st_frame {
251 u32 base[6];
252 u32 rom_addr;
253
254 struct ver_info drv_ver;
255 struct ver_info bios_ver;
256
257 u32 bus;
258 u32 slot;
259 u32 irq_level;
260 u32 irq_vec;
261 u32 id;
262 u32 subid;
263
264 u32 dimm_size;
265 u8 dimm_type;
266 u8 reserved[3];
267
268 u32 channel;
269 u32 reserved1;
270};
271
272struct st_drvver {
273 u32 major;
274 u32 minor;
275 u32 oem;
276 u32 build;
277 u32 signature[2];
278 u8 console_id;
279 u8 host_no;
280 u8 reserved0[2];
281 u32 reserved[3];
282};
283
284#define MU_REQ_BUFFER_SIZE (MU_REQ_COUNT * sizeof(struct req_msg))
285#define MU_STATUS_BUFFER_SIZE (MU_STATUS_COUNT * sizeof(struct status_msg))
286#define MU_BUFFER_SIZE (MU_REQ_BUFFER_SIZE + MU_STATUS_BUFFER_SIZE)
fb4f66be
EL		 287#define STEX_EXTRA_SIZE max(sizeof(struct st_frame), sizeof(ST_INQ))
288#define STEX_BUFFER_SIZE (MU_BUFFER_SIZE + STEX_EXTRA_SIZE)
5a25ba16
JG		 289
290struct st_ccb {
291 struct req_msg *req;
292 struct scsi_cmnd *cmd;
293
294 void *sense_buffer;
295 unsigned int sense_bufflen;
296 int sg_count;
297
298 u32 req_type;
299 u8 srb_status;
300 u8 scsi_status;
301};
302
303struct st_hba {
304 void __iomem *mmio_base; /* iomapped PCI memory space */
305 void *dma_mem;
306 dma_addr_t dma_handle;
94e9108b 307 size_t dma_size;
5a25ba16
JG		 308
309 struct Scsi_Host *host;
310 struct pci_dev *pdev;
311
5a25ba16
JG		 312 u32 req_head;
313 u32 req_tail;
314 u32 status_head;
315 u32 status_tail;
316
317 struct status_msg *status_buffer;
318 void *copy_buffer; /* temp buffer for driver-handled commands */
319 struct st_ccb ccb[MU_MAX_REQUEST];
320 struct st_ccb *wait_ccb;
321 wait_queue_head_t waitq;
322
323 unsigned int mu_status;
324 int out_req_cnt;
325
326 unsigned int cardtype;
327};
328
329static const char console_inq_page[] =
330{
331 0x03,0x00,0x03,0x03,0xFA,0x00,0x00,0x30,
332 0x50,0x72,0x6F,0x6D,0x69,0x73,0x65,0x20, /* "Promise " */
333 0x52,0x41,0x49,0x44,0x20,0x43,0x6F,0x6E, /* "RAID Con" */
334 0x73,0x6F,0x6C,0x65,0x20,0x20,0x20,0x20, /* "sole " */
335 0x31,0x2E,0x30,0x30,0x20,0x20,0x20,0x20, /* "1.00 " */
336 0x53,0x58,0x2F,0x52,0x53,0x41,0x46,0x2D, /* "SX/RSAF-" */
337 0x54,0x45,0x31,0x2E,0x30,0x30,0x20,0x20, /* "TE1.00 " */
338 0x0C,0x20,0x20,0x20,0x20,0x20,0x20,0x20
339};
340
341MODULE_AUTHOR("Ed Lin");
342MODULE_DESCRIPTION("Promise Technology SuperTrak EX Controllers");
343MODULE_LICENSE("GPL");
344MODULE_VERSION(ST_DRIVER_VERSION);
345
346static void stex_gettime(__le32 *time)
347{
348 struct timeval tv;
349 do_gettimeofday(&tv);
350
351 *time = cpu_to_le32(tv.tv_sec & 0xffffffff);
352 *(time + 1) = cpu_to_le32((tv.tv_sec >> 16) >> 16);
353}
354
5a25ba16
JG		 355static struct status_msg *stex_get_status(struct st_hba *hba)
356{
357 struct status_msg *status =
358 hba->status_buffer + hba->status_tail;
359
360 ++hba->status_tail;
361 hba->status_tail %= MU_STATUS_COUNT;
362
363 return status;
364}
365
5a25ba16
JG		 366static void stex_invalid_field(struct scsi_cmnd *cmd,
367 void (*done)(struct scsi_cmnd *))
368{
11002fbc
FT		 369 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
370
5a25ba16 371 /* "Invalid field in cbd" */
11002fbc
FT		 372 scsi_build_sense_buffer(0, cmd->sense_buffer, ILLEGAL_REQUEST, 0x24,
373 0x0);
5a25ba16
JG		 374 done(cmd);
375}
376
377static struct req_msg *stex_alloc_req(struct st_hba *hba)
378{
379 struct req_msg *req = ((struct req_msg *)hba->dma_mem) +
380 hba->req_head;
381
382 ++hba->req_head;
383 hba->req_head %= MU_REQ_COUNT;
384
385 return req;
386}
387
388static int stex_map_sg(struct st_hba *hba,
389 struct req_msg *req, struct st_ccb *ccb)
390{
5a25ba16 391 struct scsi_cmnd *cmd;
d5587d5d 392 struct scatterlist *sg;
5a25ba16 393 struct st_sgtable *dst;
d5587d5d 394 int i, nseg;
5a25ba16
JG		 395
396 cmd = ccb->cmd;
397 dst = (struct st_sgtable *)req->variable;
398 dst->max_sg_count = cpu_to_le16(ST_MAX_SG);
d5587d5d 399 dst->sz_in_byte = cpu_to_le32(scsi_bufflen(cmd));
5a25ba16 400
d5587d5d
FT		 401 nseg = scsi_dma_map(cmd);
402 if (nseg < 0)
403 return -EIO;
404 if (nseg) {
405 ccb->sg_count = nseg;
406 dst->sg_count = cpu_to_le16((u16)nseg);
5a25ba16 407
d5587d5d
FT		 408 scsi_for_each_sg(cmd, sg, nseg, i) {
409 dst->table[i].count = cpu_to_le32((u32)sg_dma_len(sg));
5a25ba16 410 dst->table[i].addr =
d5587d5d 411 cpu_to_le32(sg_dma_address(sg) & 0xffffffff);
5a25ba16 412 dst->table[i].addr_hi =
d5587d5d 413 cpu_to_le32((sg_dma_address(sg) >> 16) >> 16);
5a25ba16
JG		 414 dst->table[i].ctrl = SG_CF_64B | SG_CF_HOST;
415 }
416 dst->table[--i].ctrl |= SG_CF_EOT;
5a25ba16
JG		 417 }
418
5a25ba16
JG		 419 return 0;
420}
421
5a25ba16
JG		 422static void stex_controller_info(struct st_hba *hba, struct st_ccb *ccb)
423{
424 struct st_frame *p;
425 size_t count = sizeof(struct st_frame);
426
427 p = hba->copy_buffer;
31fe47d4 428 count = scsi_sg_copy_to_buffer(ccb->cmd, p, count);
5a25ba16
JG		 429 memset(p->base, 0, sizeof(u32)*6);
430 *(unsigned long *)(p->base) = pci_resource_start(hba->pdev, 0);
431 p->rom_addr = 0;
432
433 p->drv_ver.major = ST_VER_MAJOR;
434 p->drv_ver.minor = ST_VER_MINOR;
435 p->drv_ver.oem = ST_OEM;
436 p->drv_ver.build = ST_BUILD_VER;
437
438 p->bus = hba->pdev->bus->number;
439 p->slot = hba->pdev->devfn;
440 p->irq_level = 0;
441 p->irq_vec = hba->pdev->irq;
442 p->id = hba->pdev->vendor << 16 | hba->pdev->device;
443 p->subid =
444 hba->pdev->subsystem_vendor << 16 | hba->pdev->subsystem_device;
445
31fe47d4 446 count = scsi_sg_copy_from_buffer(ccb->cmd, p, count);
5a25ba16
JG		 447}
448
449static void
450stex_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag)
451{
452 req->tag = cpu_to_le16(tag);
453 req->task_attr = TASK_ATTRIBUTE_SIMPLE;
454 req->task_manage = 0; /* not supported yet */
5a25ba16
JG		 455
456 hba->ccb[tag].req = req;
457 hba->out_req_cnt++;
458
459 writel(hba->req_head, hba->mmio_base + IMR0);
460 writel(MU_INBOUND_DOORBELL_REQHEADCHANGED, hba->mmio_base + IDBL);
461 readl(hba->mmio_base + IDBL); /* flush */
462}
463
cf355883
EL		 464static int
465stex_slave_alloc(struct scsi_device *sdev)
466{
467 /* Cheat: usually extracted from Inquiry data */
468 sdev->tagged_supported = 1;
469
5d90027f 470 scsi_activate_tcq(sdev, ST_CMD_PER_LUN);
cf355883
EL		 471
472 return 0;
473}
474
5a25ba16
JG		 475static int
476stex_slave_config(struct scsi_device *sdev)
477{
478 sdev->use_10_for_rw = 1;
479 sdev->use_10_for_ms = 1;
dc5c49bf 480 blk_queue_rq_timeout(sdev->request_queue, 60 * HZ);
cf355883
EL		 481 sdev->tagged_supported = 1;
482
5a25ba16
JG		 483 return 0;
484}
485
486static void
487stex_slave_destroy(struct scsi_device *sdev)
488{
cf355883 489 scsi_deactivate_tcq(sdev, 1);
5a25ba16
JG		 490}
491
492static int
493stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
494{
495 struct st_hba *hba;
496 struct Scsi_Host *host;
497 unsigned int id,lun;
498 struct req_msg *req;
499 u16 tag;
500 host = cmd->device->host;
501 id = cmd->device->id;
e0b2e597 502 lun = cmd->device->lun;
5a25ba16
JG		 503 hba = (struct st_hba *) &host->hostdata[0];
504
505 switch (cmd->cmnd[0]) {
506 case MODE_SENSE_10:
507 {
508 static char ms10_caching_page[12] =
509 { 0, 0x12, 0, 0, 0, 0, 0, 0, 0x8, 0xa, 0x4, 0 };
510 unsigned char page;
511 page = cmd->cmnd[2] & 0x3f;
512 if (page == 0x8 || page == 0x3f) {
31fe47d4
FT		 513 scsi_sg_copy_from_buffer(cmd, ms10_caching_page,
514 sizeof(ms10_caching_page));
5a25ba16
JG		 515 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
516 done(cmd);
517 } else
518 stex_invalid_field(cmd, done);
519 return 0;
520 }
e0b2e597
EL		 521 case REPORT_LUNS:
522 /*
523 * The shasta firmware does not report actual luns in the
524 * target, so fail the command to force sequential lun scan.
525 * Also, the console device does not support this command.
526 */
527 if (hba->cardtype == st_shasta || id == host->max_id - 1) {
528 stex_invalid_field(cmd, done);
529 return 0;
530 }
531 break;
d116a7bc
EL		 532 case TEST_UNIT_READY:
533 if (id == host->max_id - 1) {
534 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
535 done(cmd);
536 return 0;
537 }
538 break;
5a25ba16 539 case INQUIRY:
e0b2e597 540 if (id != host->max_id - 1)
5a25ba16
JG		 541 break;
542 if (lun == 0 && (cmd->cmnd[1] & INQUIRY_EVPD) == 0) {
31fe47d4
FT		 543 scsi_sg_copy_from_buffer(cmd, (void *)console_inq_page,
544 sizeof(console_inq_page));
5a25ba16
JG		 545 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
546 done(cmd);
547 } else
548 stex_invalid_field(cmd, done);
549 return 0;
550 case PASSTHRU_CMD:
551 if (cmd->cmnd[1] == PASSTHRU_GET_DRVVER) {
552 struct st_drvver ver;
26106e3c 553 size_t cp_len = sizeof(ver);
5a25ba16
JG		 554 ver.major = ST_VER_MAJOR;
555 ver.minor = ST_VER_MINOR;
556 ver.oem = ST_OEM;
557 ver.build = ST_BUILD_VER;
558 ver.signature[0] = PASSTHRU_SIGNATURE;
e0b2e597 559 ver.console_id = host->max_id - 1;
5a25ba16 560 ver.host_no = hba->host->host_no;
31fe47d4 561 cp_len = scsi_sg_copy_from_buffer(cmd, &ver, cp_len);
26106e3c 562 cmd->result = sizeof(ver) == cp_len ?
5a25ba16
JG		 563 DID_OK << 16 | COMMAND_COMPLETE << 8 :
564 DID_ERROR << 16 | COMMAND_COMPLETE << 8;
565 done(cmd);
566 return 0;
567 }
568 default:
569 break;
570 }
571
572 cmd->scsi_done = done;
573
cf355883
EL		 574 tag = cmd->request->tag;
575
576 if (unlikely(tag >= host->can_queue))
5a25ba16
JG		 577 return SCSI_MLQUEUE_HOST_BUSY;
578
579 req = stex_alloc_req(hba);
fb4f66be 580
e0b2e597
EL		 581 req->lun = lun;
582 req->target = id;
5a25ba16
JG		 583
584 /* cdb */
585 memcpy(req->cdb, cmd->cmnd, STEX_CDB_LENGTH);
586
587 hba->ccb[tag].cmd = cmd;
588 hba->ccb[tag].sense_bufflen = SCSI_SENSE_BUFFERSIZE;
589 hba->ccb[tag].sense_buffer = cmd->sense_buffer;
590 hba->ccb[tag].req_type = 0;
591
592 if (cmd->sc_data_direction != DMA_NONE)
593 stex_map_sg(hba, req, &hba->ccb[tag]);
594
595 stex_send_cmd(hba, req, tag);
596 return 0;
597}
598
5a25ba16
JG		 599static void stex_scsi_done(struct st_ccb *ccb)
600{
601 struct scsi_cmnd *cmd = ccb->cmd;
602 int result;
603
604 if (ccb->srb_status == SRB_STATUS_SUCCESS || ccb->srb_status == 0) {
605 result = ccb->scsi_status;
606 switch (ccb->scsi_status) {
607 case SAM_STAT_GOOD:
608 result |= DID_OK << 16 | COMMAND_COMPLETE << 8;
609 break;
610 case SAM_STAT_CHECK_CONDITION:
611 result |= DRIVER_SENSE << 24;
612 break;
613 case SAM_STAT_BUSY:
614 result |= DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
615 break;
616 default:
617 result |= DID_ERROR << 16 | COMMAND_COMPLETE << 8;
618 break;
619 }
620 }
621 else if (ccb->srb_status & SRB_SEE_SENSE)
622 result = DRIVER_SENSE << 24 | SAM_STAT_CHECK_CONDITION;
623 else switch (ccb->srb_status) {
624 case SRB_STATUS_SELECTION_TIMEOUT:
625 result = DID_NO_CONNECT << 16 | COMMAND_COMPLETE << 8;
626 break;
627 case SRB_STATUS_BUSY:
628 result = DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
629 break;
630 case SRB_STATUS_INVALID_REQUEST:
631 case SRB_STATUS_ERROR:
632 default:
633 result = DID_ERROR << 16 | COMMAND_COMPLETE << 8;
634 break;
635 }
636
637 cmd->result = result;
638 cmd->scsi_done(cmd);
639}
640
641static void stex_copy_data(struct st_ccb *ccb,
642 struct status_msg *resp, unsigned int variable)
643{
644 size_t count = variable;
645 if (resp->scsi_status != SAM_STAT_GOOD) {
646 if (ccb->sense_buffer != NULL)
647 memcpy(ccb->sense_buffer, resp->variable,
648 min(variable, ccb->sense_bufflen));
649 return;
650 }
651
652 if (ccb->cmd == NULL)
653 return;
31fe47d4 654 count = scsi_sg_copy_from_buffer(ccb->cmd, resp->variable, count);
fb4f66be
EL		 655}
656
657static void stex_ys_commands(struct st_hba *hba,
658 struct st_ccb *ccb, struct status_msg *resp)
659{
fb4f66be
EL		 660 if (ccb->cmd->cmnd[0] == MGT_CMD &&
661 resp->scsi_status != SAM_STAT_CHECK_CONDITION) {
968a5763
EL		 662 scsi_set_resid(ccb->cmd, scsi_bufflen(ccb->cmd) -
663 le32_to_cpu(*(__le32 *)&resp->variable[0]));
fb4f66be
EL		 664 return;
665 }
666
667 if (resp->srb_status != 0)
668 return;
669
670 /* determine inquiry command status by DeviceTypeQualifier */
671 if (ccb->cmd->cmnd[0] == INQUIRY &&
672 resp->scsi_status == SAM_STAT_GOOD) {
673 ST_INQ *inq_data;
674
31fe47d4
FT		 675 scsi_sg_copy_to_buffer(ccb->cmd, hba->copy_buffer,
676 STEX_EXTRA_SIZE);
fb4f66be
EL		 677 inq_data = (ST_INQ *)hba->copy_buffer;
678 if (inq_data->DeviceTypeQualifier != 0)
679 ccb->srb_status = SRB_STATUS_SELECTION_TIMEOUT;
680 else
681 ccb->srb_status = SRB_STATUS_SUCCESS;
fb4f66be 682 }
5a25ba16
JG		 683}
684
685static void stex_mu_intr(struct st_hba *hba, u32 doorbell)
686{
687 void __iomem *base = hba->mmio_base;
688 struct status_msg *resp;
689 struct st_ccb *ccb;
690 unsigned int size;
691 u16 tag;
692
693 if (!(doorbell & MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED))
694 return;
695
696 /* status payloads */
697 hba->status_head = readl(base + OMR1);
698 if (unlikely(hba->status_head >= MU_STATUS_COUNT)) {
699 printk(KERN_WARNING DRV_NAME "(%s): invalid status head\n",
700 pci_name(hba->pdev));
701 return;
702 }
703
fb4f66be
EL		 704 /*
705 * it's not a valid status payload if:
706 * 1. there are no pending requests(e.g. during init stage)
707 * 2. there are some pending requests, but the controller is in
708 * reset status, and its type is not st_yosemite
709 * firmware of st_yosemite in reset status will return pending requests
710 * to driver, so we allow it to pass
711 */
712 if (unlikely(hba->out_req_cnt <= 0 ||
713 (hba->mu_status == MU_STATE_RESETTING &&
714 hba->cardtype != st_yosemite))) {
5a25ba16
JG		 715 hba->status_tail = hba->status_head;
716 goto update_status;
717 }
718
719 while (hba->status_tail != hba->status_head) {
720 resp = stex_get_status(hba);
721 tag = le16_to_cpu(resp->tag);
cf355883 722 if (unlikely(tag >= hba->host->can_queue)) {
5a25ba16
JG		 723 printk(KERN_WARNING DRV_NAME
724 "(%s): invalid tag\n", pci_name(hba->pdev));
725 continue;
726 }
5a25ba16 727
5a25ba16
JG		 728 ccb = &hba->ccb[tag];
729 if (hba->wait_ccb == ccb)
730 hba->wait_ccb = NULL;
731 if (unlikely(ccb->req == NULL)) {
732 printk(KERN_WARNING DRV_NAME
733 "(%s): lagging req\n", pci_name(hba->pdev));
fb4f66be 734 hba->out_req_cnt--;
5a25ba16
JG		 735 continue;
736 }
737
738 size = resp->payload_sz * sizeof(u32); /* payload size */
739 if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN ||
740 size > sizeof(*resp))) {
741 printk(KERN_WARNING DRV_NAME "(%s): bad status size\n",
742 pci_name(hba->pdev));
743 } else {
744 size -= sizeof(*resp) - STATUS_VAR_LEN; /* copy size */
745 if (size)
746 stex_copy_data(ccb, resp, size);
747 }
748
749 ccb->srb_status = resp->srb_status;
750 ccb->scsi_status = resp->scsi_status;
751
cf355883 752 if (likely(ccb->cmd != NULL)) {
fb4f66be
EL		 753 if (hba->cardtype == st_yosemite)
754 stex_ys_commands(hba, ccb, resp);
755
cf355883
EL		 756 if (unlikely(ccb->cmd->cmnd[0] == PASSTHRU_CMD &&
757 ccb->cmd->cmnd[1] == PASSTHRU_GET_ADAPTER))
758 stex_controller_info(hba, ccb);
fb4f66be 759
d5587d5d 760 scsi_dma_unmap(ccb->cmd);
cf355883
EL		 761 stex_scsi_done(ccb);
762 hba->out_req_cnt--;
763 } else if (ccb->req_type & PASSTHRU_REQ_TYPE) {
764 hba->out_req_cnt--;
5a25ba16
JG		 765 if (ccb->req_type & PASSTHRU_REQ_NO_WAKEUP) {
766 ccb->req_type = 0;
767 continue;
768 }
769 ccb->req_type = 0;
770 if (waitqueue_active(&hba->waitq))
771 wake_up(&hba->waitq);
5a25ba16 772 }
5a25ba16
JG		 773 }
774
775update_status:
776 writel(hba->status_head, base + IMR1);
777 readl(base + IMR1); /* flush */
778}
779
7d12e780 780static irqreturn_t stex_intr(int irq, void *__hba)
5a25ba16
JG		 781{
782 struct st_hba *hba = __hba;
783 void __iomem *base = hba->mmio_base;
784 u32 data;
785 unsigned long flags;
786 int handled = 0;
787
788 spin_lock_irqsave(hba->host->host_lock, flags);
789
790 data = readl(base + ODBL);
791
792 if (data && data != 0xffffffff) {
793 /* clear the interrupt */
794 writel(data, base + ODBL);
795 readl(base + ODBL); /* flush */
796 stex_mu_intr(hba, data);
797 handled = 1;
798 }
799
800 spin_unlock_irqrestore(hba->host->host_lock, flags);
801
802 return IRQ_RETVAL(handled);
803}
804
805static int stex_handshake(struct st_hba *hba)
806{
807 void __iomem *base = hba->mmio_base;
808 struct handshake_frame *h;
809 dma_addr_t status_phys;
529e7a62 810 u32 data;
76fbf96f 811 unsigned long before;
5a25ba16
JG		 812
813 if (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
814 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
815 readl(base + IDBL);
76fbf96f
EL		 816 before = jiffies;
817 while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
818 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
819 printk(KERN_ERR DRV_NAME
820 "(%s): no handshake signature\n",
821 pci_name(hba->pdev));
822 return -1;
823 }
5a25ba16
JG		 824 rmb();
825 msleep(1);
826 }
5a25ba16
JG		 827 }
828
829 udelay(10);
830
529e7a62
EL		 831 data = readl(base + OMR1);
832 if ((data & 0xffff0000) == MU_HANDSHAKE_SIGNATURE_HALF) {
833 data &= 0x0000ffff;
834 if (hba->host->can_queue > data)
835 hba->host->can_queue = data;
836 }
837
5a25ba16
JG		 838 h = (struct handshake_frame *)(hba->dma_mem + MU_REQ_BUFFER_SIZE);
839 h->rb_phy = cpu_to_le32(hba->dma_handle);
840 h->rb_phy_hi = cpu_to_le32((hba->dma_handle >> 16) >> 16);
841 h->req_sz = cpu_to_le16(sizeof(struct req_msg));
842 h->req_cnt = cpu_to_le16(MU_REQ_COUNT);
843 h->status_sz = cpu_to_le16(sizeof(struct status_msg));
844 h->status_cnt = cpu_to_le16(MU_STATUS_COUNT);
845 stex_gettime(&h->hosttime);
846 h->partner_type = HMU_PARTNER_TYPE;
94e9108b
EL		 847 if (hba->dma_size > STEX_BUFFER_SIZE) {
848 h->extra_offset = cpu_to_le32(STEX_BUFFER_SIZE);
849 h->extra_size = cpu_to_le32(ST_ADDITIONAL_MEM);
850 } else
851 h->extra_offset = h->extra_size = 0;
5a25ba16
JG		 852
853 status_phys = hba->dma_handle + MU_REQ_BUFFER_SIZE;
854 writel(status_phys, base + IMR0);
855 readl(base + IMR0);
856 writel((status_phys >> 16) >> 16, base + IMR1);
857 readl(base + IMR1);
858
859 writel((status_phys >> 16) >> 16, base + OMR0); /* old fw compatible */
860 readl(base + OMR0);
861 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
862 readl(base + IDBL); /* flush */
863
864 udelay(10);
76fbf96f
EL		 865 before = jiffies;
866 while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
867 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
868 printk(KERN_ERR DRV_NAME
869 "(%s): no signature after handshake frame\n",
870 pci_name(hba->pdev));
871 return -1;
872 }
5a25ba16
JG		 873 rmb();
874 msleep(1);
875 }
876
5a25ba16
JG		 877 writel(0, base + IMR0);
878 readl(base + IMR0);
879 writel(0, base + OMR0);
880 readl(base + OMR0);
881 writel(0, base + IMR1);
882 readl(base + IMR1);
883 writel(0, base + OMR1);
884 readl(base + OMR1); /* flush */
885 hba->mu_status = MU_STATE_STARTED;
886 return 0;
887}
888
889static int stex_abort(struct scsi_cmnd *cmd)
890{
891 struct Scsi_Host *host = cmd->device->host;
892 struct st_hba *hba = (struct st_hba *)host->hostdata;
cf355883 893 u16 tag = cmd->request->tag;
5a25ba16
JG		 894 void __iomem *base;
895 u32 data;
896 int result = SUCCESS;
897 unsigned long flags;
c25da0af
EL		 898
899 printk(KERN_INFO DRV_NAME
900 "(%s): aborting command\n", pci_name(hba->pdev));
901 scsi_print_command(cmd);
902
5a25ba16
JG		 903 base = hba->mmio_base;
904 spin_lock_irqsave(host->host_lock, flags);
cf355883
EL		 905 if (tag < host->can_queue && hba->ccb[tag].cmd == cmd)
906 hba->wait_ccb = &hba->ccb[tag];
907 else {
908 for (tag = 0; tag < host->can_queue; tag++)
909 if (hba->ccb[tag].cmd == cmd) {
910 hba->wait_ccb = &hba->ccb[tag];
911 break;
912 }
913 if (tag >= host->can_queue)
914 goto out;
915 }
5a25ba16
JG		 916
917 data = readl(base + ODBL);
918 if (data == 0 || data == 0xffffffff)
919 goto fail_out;
920
921 writel(data, base + ODBL);
922 readl(base + ODBL); /* flush */
923
924 stex_mu_intr(hba, data);
925
926 if (hba->wait_ccb == NULL) {
927 printk(KERN_WARNING DRV_NAME
928 "(%s): lost interrupt\n", pci_name(hba->pdev));
929 goto out;
930 }
931
932fail_out:
d5587d5d 933 scsi_dma_unmap(cmd);
5a25ba16
JG		 934 hba->wait_ccb->req = NULL; /* nullify the req's future return */
935 hba->wait_ccb = NULL;
936 result = FAILED;
937out:
938 spin_unlock_irqrestore(host->host_lock, flags);
939 return result;
940}
941
942static void stex_hard_reset(struct st_hba *hba)
943{
944 struct pci_bus *bus;
945 int i;
946 u16 pci_cmd;
947 u8 pci_bctl;
948
949 for (i = 0; i < 16; i++)
950 pci_read_config_dword(hba->pdev, i * 4,
951 &hba->pdev->saved_config_space[i]);
952
953 /* Reset secondary bus. Our controller(MU/ATU) is the only device on
954 secondary bus. Consult Intel 80331/3 developer's manual for detail */
955 bus = hba->pdev->bus;
956 pci_read_config_byte(bus->self, PCI_BRIDGE_CONTROL, &pci_bctl);
957 pci_bctl |= PCI_BRIDGE_CTL_BUS_RESET;
958 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
69f4a513
EL		 959
960 /*
961 * 1 ms may be enough for 8-port controllers. But 16-port controllers
962 * require more time to finish bus reset. Use 100 ms here for safety
963 */
964 msleep(100);
5a25ba16
JG		 965 pci_bctl &= ~PCI_BRIDGE_CTL_BUS_RESET;
966 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
967
76fbf96f 968 for (i = 0; i < MU_HARD_RESET_WAIT; i++) {
5a25ba16 969 pci_read_config_word(hba->pdev, PCI_COMMAND, &pci_cmd);
47c4f997 970 if (pci_cmd != 0xffff && (pci_cmd & PCI_COMMAND_MASTER))
5a25ba16
JG		 971 break;
972 msleep(1);
973 }
974
975 ssleep(5);
976 for (i = 0; i < 16; i++)
977 pci_write_config_dword(hba->pdev, i * 4,
978 hba->pdev->saved_config_space[i]);
979}
980
981static int stex_reset(struct scsi_cmnd *cmd)
982{
983 struct st_hba *hba;
984 unsigned long flags;
fb4f66be 985 unsigned long before;
5a25ba16
JG		 986 hba = (struct st_hba *) &cmd->device->host->hostdata[0];
987
c25da0af
EL		 988 printk(KERN_INFO DRV_NAME
989 "(%s): resetting host\n", pci_name(hba->pdev));
990 scsi_print_command(cmd);
991
5a25ba16
JG		 992 hba->mu_status = MU_STATE_RESETTING;
993
994 if (hba->cardtype == st_shasta)
995 stex_hard_reset(hba);
996
fb4f66be
EL		 997 if (hba->cardtype != st_yosemite) {
998 if (stex_handshake(hba)) {
999 printk(KERN_WARNING DRV_NAME
1000 "(%s): resetting: handshake failed\n",
1001 pci_name(hba->pdev));
1002 return FAILED;
1003 }
1004 spin_lock_irqsave(hba->host->host_lock, flags);
1005 hba->req_head = 0;
1006 hba->req_tail = 0;
1007 hba->status_head = 0;
1008 hba->status_tail = 0;
1009 hba->out_req_cnt = 0;
1010 spin_unlock_irqrestore(hba->host->host_lock, flags);
1011 return SUCCESS;
5a25ba16 1012 }
5a25ba16 1013
fb4f66be
EL		 1014 /* st_yosemite */
1015 writel(MU_INBOUND_DOORBELL_RESET, hba->mmio_base + IDBL);
1016 readl(hba->mmio_base + IDBL); /* flush */
1017 before = jiffies;
1018 while (hba->out_req_cnt > 0) {
1019 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) {
1020 printk(KERN_WARNING DRV_NAME
1021 "(%s): reset timeout\n", pci_name(hba->pdev));
1022 return FAILED;
1023 }
1024 msleep(1);
1025 }
1026
1027 hba->mu_status = MU_STATE_STARTED;
5a25ba16
JG		 1028 return SUCCESS;
1029}
1030
1031static int stex_biosparam(struct scsi_device *sdev,
1032 struct block_device *bdev, sector_t capacity, int geom[])
1033{
b4b8bed1 1034 int heads = 255, sectors = 63;
5a25ba16
JG		 1035
1036 if (capacity < 0x200000) {
1037 heads = 64;
1038 sectors = 32;
1039 }
1040
b4b8bed1 1041 sector_div(capacity, heads * sectors);
5a25ba16
JG		 1042
1043 geom[0] = heads;
1044 geom[1] = sectors;
b4b8bed1 1045 geom[2] = capacity;
5a25ba16
JG		 1046
1047 return 0;
1048}
1049
1050static struct scsi_host_template driver_template = {
1051 .module = THIS_MODULE,
1052 .name = DRV_NAME,
1053 .proc_name = DRV_NAME,
1054 .bios_param = stex_biosparam,
1055 .queuecommand = stex_queuecommand,
cf355883 1056 .slave_alloc = stex_slave_alloc,
5a25ba16
JG		 1057 .slave_configure = stex_slave_config,
1058 .slave_destroy = stex_slave_destroy,
1059 .eh_abort_handler = stex_abort,
1060 .eh_host_reset_handler = stex_reset,
1061 .can_queue = ST_CAN_QUEUE,
1062 .this_id = -1,
1063 .sg_tablesize = ST_MAX_SG,
1064 .cmd_per_lun = ST_CMD_PER_LUN,
1065};
1066
1067static int stex_set_dma_mask(struct pci_dev * pdev)
1068{
1069 int ret;
1070 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)
1071 && !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))
1072 return 0;
1073 ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1074 if (!ret)
1075 ret = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1076 return ret;
1077}
1078
1079static int __devinit
1080stex_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1081{
1082 struct st_hba *hba;
1083 struct Scsi_Host *host;
1084 int err;
1085
1086 err = pci_enable_device(pdev);
1087 if (err)
1088 return err;
1089
1090 pci_set_master(pdev);
1091
1092 host = scsi_host_alloc(&driver_template, sizeof(struct st_hba));
1093
1094 if (!host) {
1095 printk(KERN_ERR DRV_NAME "(%s): scsi_host_alloc failed\n",
1096 pci_name(pdev));
1097 err = -ENOMEM;
1098 goto out_disable;
1099 }
1100
1101 hba = (struct st_hba *)host->hostdata;
1102 memset(hba, 0, sizeof(struct st_hba));
1103
1104 err = pci_request_regions(pdev, DRV_NAME);
1105 if (err < 0) {
1106 printk(KERN_ERR DRV_NAME "(%s): request regions failed\n",
1107 pci_name(pdev));
1108 goto out_scsi_host_put;
1109 }
1110
c25da0af 1111 hba->mmio_base = ioremap_nocache(pci_resource_start(pdev, 0),
5a25ba16
JG		 1112 pci_resource_len(pdev, 0));
1113 if ( !hba->mmio_base) {
1114 printk(KERN_ERR DRV_NAME "(%s): memory map failed\n",
1115 pci_name(pdev));
1116 err = -ENOMEM;
1117 goto out_release_regions;
1118 }
1119
1120 err = stex_set_dma_mask(pdev);
1121 if (err) {
1122 printk(KERN_ERR DRV_NAME "(%s): set dma mask failed\n",
1123 pci_name(pdev));
1124 goto out_iounmap;
1125 }
1126
94e9108b
EL		 1127 hba->cardtype = (unsigned int) id->driver_data;
1128 if (hba->cardtype == st_vsc && (pdev->subsystem_device & 0xf) == 0x1)
1129 hba->cardtype = st_vsc1;
1130 hba->dma_size = (hba->cardtype == st_vsc1) ?
1131 (STEX_BUFFER_SIZE + ST_ADDITIONAL_MEM) : (STEX_BUFFER_SIZE);
5a25ba16 1132 hba->dma_mem = dma_alloc_coherent(&pdev->dev,
94e9108b 1133 hba->dma_size, &hba->dma_handle, GFP_KERNEL);
5a25ba16
JG		 1134 if (!hba->dma_mem) {
1135 err = -ENOMEM;
1136 printk(KERN_ERR DRV_NAME "(%s): dma mem alloc failed\n",
1137 pci_name(pdev));
1138 goto out_iounmap;
1139 }
1140
1141 hba->status_buffer =
1142 (struct status_msg *)(hba->dma_mem + MU_REQ_BUFFER_SIZE);
1143 hba->copy_buffer = hba->dma_mem + MU_BUFFER_SIZE;
1144 hba->mu_status = MU_STATE_STARTING;
1145
e0b2e597
EL		 1146 if (hba->cardtype == st_shasta) {
1147 host->max_lun = 8;
1148 host->max_id = 16 + 1;
1149 } else if (hba->cardtype == st_yosemite) {
1150 host->max_lun = 128;
1151 host->max_id = 1 + 1;
1152 } else {
1153 /* st_vsc and st_vsc1 */
1154 host->max_lun = 1;
1155 host->max_id = 128 + 1;
1156 }
1157 host->max_channel = 0;
5a25ba16
JG		 1158 host->unique_id = host->host_no;
1159 host->max_cmd_len = STEX_CDB_LENGTH;
1160
1161 hba->host = host;
1162 hba->pdev = pdev;
1163 init_waitqueue_head(&hba->waitq);
1164
1165 err = request_irq(pdev->irq, stex_intr, IRQF_SHARED, DRV_NAME, hba);
1166 if (err) {
1167 printk(KERN_ERR DRV_NAME "(%s): request irq failed\n",
1168 pci_name(pdev));
1169 goto out_pci_free;
1170 }
1171
1172 err = stex_handshake(hba);
1173 if (err)
1174 goto out_free_irq;
1175
529e7a62 1176 err = scsi_init_shared_tag_map(host, host->can_queue);
deb81d80 1177 if (err) {
cf355883
EL		 1178 printk(KERN_ERR DRV_NAME "(%s): init shared queue failed\n",
1179 pci_name(pdev));
1180 goto out_free_irq;
1181 }
1182
5a25ba16
JG		 1183 pci_set_drvdata(pdev, hba);
1184
1185 err = scsi_add_host(host, &pdev->dev);
1186 if (err) {
1187 printk(KERN_ERR DRV_NAME "(%s): scsi_add_host failed\n",
1188 pci_name(pdev));
1189 goto out_free_irq;
1190 }
1191
1192 scsi_scan_host(host);
1193
1194 return 0;
1195
1196out_free_irq:
1197 free_irq(pdev->irq, hba);
1198out_pci_free:
94e9108b 1199 dma_free_coherent(&pdev->dev, hba->dma_size,
5a25ba16
JG		 1200 hba->dma_mem, hba->dma_handle);
1201out_iounmap:
1202 iounmap(hba->mmio_base);
1203out_release_regions:
1204 pci_release_regions(pdev);
1205out_scsi_host_put:
1206 scsi_host_put(host);
1207out_disable:
1208 pci_disable_device(pdev);
1209
1210 return err;
1211}
1212
1213static void stex_hba_stop(struct st_hba *hba)
1214{
1215 struct req_msg *req;
1216 unsigned long flags;
1217 unsigned long before;
cf355883 1218 u16 tag = 0;
5a25ba16
JG		 1219
1220 spin_lock_irqsave(hba->host->host_lock, flags);
1221 req = stex_alloc_req(hba);
1222 memset(req->cdb, 0, STEX_CDB_LENGTH);
1223
fb4f66be
EL		 1224 if (hba->cardtype == st_yosemite) {
1225 req->cdb[0] = MGT_CMD;
1226 req->cdb[1] = MGT_CMD_SIGNATURE;
1227 req->cdb[2] = CTLR_CONFIG_CMD;
1228 req->cdb[3] = CTLR_SHUTDOWN;
1229 } else {
1230 req->cdb[0] = CONTROLLER_CMD;
1231 req->cdb[1] = CTLR_POWER_STATE_CHANGE;
1232 req->cdb[2] = CTLR_POWER_SAVING;
1233 }
5a25ba16
JG		 1234
1235 hba->ccb[tag].cmd = NULL;
1236 hba->ccb[tag].sg_count = 0;
1237 hba->ccb[tag].sense_bufflen = 0;
1238 hba->ccb[tag].sense_buffer = NULL;
1239 hba->ccb[tag].req_type |= PASSTHRU_REQ_TYPE;
1240
1241 stex_send_cmd(hba, req, tag);
1242 spin_unlock_irqrestore(hba->host->host_lock, flags);
1243
cf355883
EL		 1244 before = jiffies;
1245 while (hba->ccb[tag].req_type & PASSTHRU_REQ_TYPE) {
1246 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ))
1247 return;
1248 msleep(10);
1249 }
5a25ba16
JG		 1250}
1251
1252static void stex_hba_free(struct st_hba *hba)
1253{
1254 free_irq(hba->pdev->irq, hba);
1255
1256 iounmap(hba->mmio_base);
1257
1258 pci_release_regions(hba->pdev);
1259
94e9108b 1260 dma_free_coherent(&hba->pdev->dev, hba->dma_size,
5a25ba16
JG		 1261 hba->dma_mem, hba->dma_handle);
1262}
1263
1264static void stex_remove(struct pci_dev *pdev)
1265{
1266 struct st_hba *hba = pci_get_drvdata(pdev);
1267
1268 scsi_remove_host(hba->host);
1269
1270 pci_set_drvdata(pdev, NULL);
1271
1272 stex_hba_stop(hba);
1273
1274 stex_hba_free(hba);
1275
1276 scsi_host_put(hba->host);
1277
1278 pci_disable_device(pdev);
1279}
1280
1281static void stex_shutdown(struct pci_dev *pdev)
1282{
1283 struct st_hba *hba = pci_get_drvdata(pdev);
1284
1285 stex_hba_stop(hba);
1286}
1287
1288static struct pci_device_id stex_pci_tbl[] = {
ee926b27
EL		 1289 /* st_shasta */
1290 { 0x105a, 0x8350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1291 st_shasta }, /* SuperTrak EX8350/8300/16350/16300 */
1292 { 0x105a, 0xc350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1293 st_shasta }, /* SuperTrak EX12350 */
1294 { 0x105a, 0x4302, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1295 st_shasta }, /* SuperTrak EX4350 */
1296 { 0x105a, 0xe350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1297 st_shasta }, /* SuperTrak EX24350 */
1298
1299 /* st_vsc */
1300 { 0x105a, 0x7250, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_vsc },
1301
1302 /* st_yosemite */
1303 { 0x105a, 0x8650, PCI_ANY_ID, 0x4600, 0, 0,
1304 st_yosemite }, /* SuperTrak EX4650 */
1305 { 0x105a, 0x8650, PCI_ANY_ID, 0x4610, 0, 0,
1306 st_yosemite }, /* SuperTrak EX4650o */
1307 { 0x105a, 0x8650, PCI_ANY_ID, 0x8600, 0, 0,
1308 st_yosemite }, /* SuperTrak EX8650EL */
1309 { 0x105a, 0x8650, PCI_ANY_ID, 0x8601, 0, 0,
1310 st_yosemite }, /* SuperTrak EX8650 */
1311 { 0x105a, 0x8650, PCI_ANY_ID, 0x8602, 0, 0,
1312 st_yosemite }, /* SuperTrak EX8654 */
1313 { 0x105a, 0x8650, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1314 st_yosemite }, /* generic st_yosemite */
5a25ba16
JG		 1315 { } /* terminate list */
1316};
1317MODULE_DEVICE_TABLE(pci, stex_pci_tbl);
1318
1319static struct pci_driver stex_pci_driver = {
1320 .name = DRV_NAME,
1321 .id_table = stex_pci_tbl,
1322 .probe = stex_probe,
1323 .remove = __devexit_p(stex_remove),
1324 .shutdown = stex_shutdown,
1325};
1326
1327static int __init stex_init(void)
1328{
1329 printk(KERN_INFO DRV_NAME
1330 ": Promise SuperTrak EX Driver version: %s\n",
1331 ST_DRIVER_VERSION);
1332
1333 return pci_register_driver(&stex_pci_driver);
1334}
1335
1336static void __exit stex_exit(void)
1337{
1338 pci_unregister_driver(&stex_pci_driver);
1339}
1340
1341module_init(stex_init);
1342module_exit(stex_exit);
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