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ACPI: thinkpad-acpi: driver sysfs conversion
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / stex.c
blobba6bcdaf2a6afdaf896da7c8a49ab982741d0ca6
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 *
14 */
15
16 #include <linux/init.h>
17 #include <linux/errno.h>
18 #include <linux/kernel.h>
19 #include <linux/delay.h>
20 #include <linux/sched.h>
21 #include <linux/time.h>
22 #include <linux/pci.h>
23 #include <linux/blkdev.h>
24 #include <linux/interrupt.h>
25 #include <linux/types.h>
26 #include <linux/module.h>
27 #include <linux/spinlock.h>
28 #include <asm/io.h>
29 #include <asm/irq.h>
30 #include <asm/byteorder.h>
31 #include <scsi/scsi.h>
32 #include <scsi/scsi_device.h>
33 #include <scsi/scsi_cmnd.h>
34 #include <scsi/scsi_host.h>
35 #include <scsi/scsi_tcq.h>
36
37 #define DRV_NAME "stex"
38 #define ST_DRIVER_VERSION "3.1.0.1"
39 #define ST_VER_MAJOR 3
40 #define ST_VER_MINOR 1
41 #define ST_OEM 0
42 #define ST_BUILD_VER 1
43
44 enum {
45 /* MU register offset */
46 IMR0 = 0x10, /* MU_INBOUND_MESSAGE_REG0 */
47 IMR1 = 0x14, /* MU_INBOUND_MESSAGE_REG1 */
48 OMR0 = 0x18, /* MU_OUTBOUND_MESSAGE_REG0 */
49 OMR1 = 0x1c, /* MU_OUTBOUND_MESSAGE_REG1 */
50 IDBL = 0x20, /* MU_INBOUND_DOORBELL */
51 IIS = 0x24, /* MU_INBOUND_INTERRUPT_STATUS */
52 IIM = 0x28, /* MU_INBOUND_INTERRUPT_MASK */
53 ODBL = 0x2c, /* MU_OUTBOUND_DOORBELL */
54 OIS = 0x30, /* MU_OUTBOUND_INTERRUPT_STATUS */
55 OIM = 0x3c, /* MU_OUTBOUND_INTERRUPT_MASK */
56
57 /* MU register value */
58 MU_INBOUND_DOORBELL_HANDSHAKE = 1,
59 MU_INBOUND_DOORBELL_REQHEADCHANGED = 2,
60 MU_INBOUND_DOORBELL_STATUSTAILCHANGED = 4,
61 MU_INBOUND_DOORBELL_HMUSTOPPED = 8,
62 MU_INBOUND_DOORBELL_RESET = 16,
63
64 MU_OUTBOUND_DOORBELL_HANDSHAKE = 1,
65 MU_OUTBOUND_DOORBELL_REQUESTTAILCHANGED = 2,
66 MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED = 4,
67 MU_OUTBOUND_DOORBELL_BUSCHANGE = 8,
68 MU_OUTBOUND_DOORBELL_HASEVENT = 16,
69
70 /* MU status code */
71 MU_STATE_STARTING = 1,
72 MU_STATE_FMU_READY_FOR_HANDSHAKE = 2,
73 MU_STATE_SEND_HANDSHAKE_FRAME = 3,
74 MU_STATE_STARTED = 4,
75 MU_STATE_RESETTING = 5,
76
77 MU_MAX_DELAY = 120,
78 MU_HANDSHAKE_SIGNATURE = 0x55aaaa55,
79 MU_HANDSHAKE_SIGNATURE_HALF = 0x5a5a0000,
80 MU_HARD_RESET_WAIT = 30000,
81 HMU_PARTNER_TYPE = 2,
82
83 /* firmware returned values */
84 SRB_STATUS_SUCCESS = 0x01,
85 SRB_STATUS_ERROR = 0x04,
86 SRB_STATUS_BUSY = 0x05,
87 SRB_STATUS_INVALID_REQUEST = 0x06,
88 SRB_STATUS_SELECTION_TIMEOUT = 0x0A,
89 SRB_SEE_SENSE = 0x80,
90
91 /* task attribute */
92 TASK_ATTRIBUTE_SIMPLE = 0x0,
93 TASK_ATTRIBUTE_HEADOFQUEUE = 0x1,
94 TASK_ATTRIBUTE_ORDERED = 0x2,
95 TASK_ATTRIBUTE_ACA = 0x4,
96
97 /* request count, etc. */
98 MU_MAX_REQUEST = 32,
99
100 /* one message wasted, use MU_MAX_REQUEST+1
101 to handle MU_MAX_REQUEST messages */
102 MU_REQ_COUNT = (MU_MAX_REQUEST + 1),
103 MU_STATUS_COUNT = (MU_MAX_REQUEST + 1),
104
105 STEX_CDB_LENGTH = MAX_COMMAND_SIZE,
106 REQ_VARIABLE_LEN = 1024,
107 STATUS_VAR_LEN = 128,
108 ST_CAN_QUEUE = MU_MAX_REQUEST,
109 ST_CMD_PER_LUN = MU_MAX_REQUEST,
110 ST_MAX_SG = 32,
111
112 /* sg flags */
113 SG_CF_EOT = 0x80, /* end of table */
114 SG_CF_64B = 0x40, /* 64 bit item */
115 SG_CF_HOST = 0x20, /* sg in host memory */
116
117 ST_MAX_ARRAY_SUPPORTED = 16,
118 ST_MAX_TARGET_NUM = (ST_MAX_ARRAY_SUPPORTED+1),
119 ST_MAX_LUN_PER_TARGET = 16,
120
121 st_shasta = 0,
122 st_vsc = 1,
123 st_vsc1 = 2,
124 st_yosemite = 3,
125
126 PASSTHRU_REQ_TYPE = 0x00000001,
127 PASSTHRU_REQ_NO_WAKEUP = 0x00000100,
128 ST_INTERNAL_TIMEOUT = 30,
129
130 ST_TO_CMD = 0,
131 ST_FROM_CMD = 1,
132
133 /* vendor specific commands of Promise */
134 MGT_CMD = 0xd8,
135 SINBAND_MGT_CMD = 0xd9,
136 ARRAY_CMD = 0xe0,
137 CONTROLLER_CMD = 0xe1,
138 DEBUGGING_CMD = 0xe2,
139 PASSTHRU_CMD = 0xe3,
140
141 PASSTHRU_GET_ADAPTER = 0x05,
142 PASSTHRU_GET_DRVVER = 0x10,
143
144 CTLR_CONFIG_CMD = 0x03,
145 CTLR_SHUTDOWN = 0x0d,
146
147 CTLR_POWER_STATE_CHANGE = 0x0e,
148 CTLR_POWER_SAVING = 0x01,
149
150 PASSTHRU_SIGNATURE = 0x4e415041,
151 MGT_CMD_SIGNATURE = 0xba,
152
153 INQUIRY_EVPD = 0x01,
154
155 ST_ADDITIONAL_MEM = 0x200000,
156 };
157
158 /* SCSI inquiry data */
159 typedef struct st_inq {
160 u8 DeviceType :5;
161 u8 DeviceTypeQualifier :3;
162 u8 DeviceTypeModifier :7;
163 u8 RemovableMedia :1;
164 u8 Versions;
165 u8 ResponseDataFormat :4;
166 u8 HiSupport :1;
167 u8 NormACA :1;
168 u8 ReservedBit :1;
169 u8 AERC :1;
170 u8 AdditionalLength;
171 u8 Reserved[2];
172 u8 SoftReset :1;
173 u8 CommandQueue :1;
174 u8 Reserved2 :1;
175 u8 LinkedCommands :1;
176 u8 Synchronous :1;
177 u8 Wide16Bit :1;
178 u8 Wide32Bit :1;
179 u8 RelativeAddressing :1;
180 u8 VendorId[8];
181 u8 ProductId[16];
182 u8 ProductRevisionLevel[4];
183 u8 VendorSpecific[20];
184 u8 Reserved3[40];
185 } ST_INQ;
186
187 struct st_sgitem {
188 u8 ctrl; /* SG_CF_xxx */
189 u8 reserved[3];
190 __le32 count;
191 __le32 addr;
192 __le32 addr_hi;
193 };
194
195 struct st_sgtable {
196 __le16 sg_count;
197 __le16 max_sg_count;
198 __le32 sz_in_byte;
199 struct st_sgitem table[ST_MAX_SG];
200 };
201
202 struct handshake_frame {
203 __le32 rb_phy; /* request payload queue physical address */
204 __le32 rb_phy_hi;
205 __le16 req_sz; /* size of each request payload */
206 __le16 req_cnt; /* count of reqs the buffer can hold */
207 __le16 status_sz; /* size of each status payload */
208 __le16 status_cnt; /* count of status the buffer can hold */
209 __le32 hosttime; /* seconds from Jan 1, 1970 (GMT) */
210 __le32 hosttime_hi;
211 u8 partner_type; /* who sends this frame */
212 u8 reserved0[7];
213 __le32 partner_ver_major;
214 __le32 partner_ver_minor;
215 __le32 partner_ver_oem;
216 __le32 partner_ver_build;
217 __le32 extra_offset; /* NEW */
218 __le32 extra_size; /* NEW */
219 u32 reserved1[2];
220 };
221
222 struct req_msg {
223 __le16 tag;
224 u8 lun;
225 u8 target;
226 u8 task_attr;
227 u8 task_manage;
228 u8 prd_entry;
229 u8 payload_sz; /* payload size in 4-byte, not used */
230 u8 cdb[STEX_CDB_LENGTH];
231 u8 variable[REQ_VARIABLE_LEN];
232 };
233
234 struct status_msg {
235 __le16 tag;
236 u8 lun;
237 u8 target;
238 u8 srb_status;
239 u8 scsi_status;
240 u8 reserved;
241 u8 payload_sz; /* payload size in 4-byte */
242 u8 variable[STATUS_VAR_LEN];
243 };
244
245 struct ver_info {
246 u32 major;
247 u32 minor;
248 u32 oem;
249 u32 build;
250 u32 reserved[2];
251 };
252
253 struct st_frame {
254 u32 base[6];
255 u32 rom_addr;
256
257 struct ver_info drv_ver;
258 struct ver_info bios_ver;
259
260 u32 bus;
261 u32 slot;
262 u32 irq_level;
263 u32 irq_vec;
264 u32 id;
265 u32 subid;
266
267 u32 dimm_size;
268 u8 dimm_type;
269 u8 reserved[3];
270
271 u32 channel;
272 u32 reserved1;
273 };
274
275 struct st_drvver {
276 u32 major;
277 u32 minor;
278 u32 oem;
279 u32 build;
280 u32 signature[2];
281 u8 console_id;
282 u8 host_no;
283 u8 reserved0[2];
284 u32 reserved[3];
285 };
286
287 #define MU_REQ_BUFFER_SIZE (MU_REQ_COUNT * sizeof(struct req_msg))
288 #define MU_STATUS_BUFFER_SIZE (MU_STATUS_COUNT * sizeof(struct status_msg))
289 #define MU_BUFFER_SIZE (MU_REQ_BUFFER_SIZE + MU_STATUS_BUFFER_SIZE)
290 #define STEX_EXTRA_SIZE max(sizeof(struct st_frame), sizeof(ST_INQ))
291 #define STEX_BUFFER_SIZE (MU_BUFFER_SIZE + STEX_EXTRA_SIZE)
292
293 struct st_ccb {
294 struct req_msg *req;
295 struct scsi_cmnd *cmd;
296
297 void *sense_buffer;
298 unsigned int sense_bufflen;
299 int sg_count;
300
301 u32 req_type;
302 u8 srb_status;
303 u8 scsi_status;
304 };
305
306 struct st_hba {
307 void __iomem *mmio_base; /* iomapped PCI memory space */
308 void *dma_mem;
309 dma_addr_t dma_handle;
310 size_t dma_size;
311
312 struct Scsi_Host *host;
313 struct pci_dev *pdev;
314
315 u32 req_head;
316 u32 req_tail;
317 u32 status_head;
318 u32 status_tail;
319
320 struct status_msg *status_buffer;
321 void *copy_buffer; /* temp buffer for driver-handled commands */
322 struct st_ccb ccb[MU_MAX_REQUEST];
323 struct st_ccb *wait_ccb;
324 wait_queue_head_t waitq;
325
326 unsigned int mu_status;
327 int out_req_cnt;
328
329 unsigned int cardtype;
330 };
331
332 static const char console_inq_page[] =
333 {
334 0x03,0x00,0x03,0x03,0xFA,0x00,0x00,0x30,
335 0x50,0x72,0x6F,0x6D,0x69,0x73,0x65,0x20, /* "Promise " */
336 0x52,0x41,0x49,0x44,0x20,0x43,0x6F,0x6E, /* "RAID Con" */
337 0x73,0x6F,0x6C,0x65,0x20,0x20,0x20,0x20, /* "sole " */
338 0x31,0x2E,0x30,0x30,0x20,0x20,0x20,0x20, /* "1.00 " */
339 0x53,0x58,0x2F,0x52,0x53,0x41,0x46,0x2D, /* "SX/RSAF-" */
340 0x54,0x45,0x31,0x2E,0x30,0x30,0x20,0x20, /* "TE1.00 " */
341 0x0C,0x20,0x20,0x20,0x20,0x20,0x20,0x20
342 };
343
344 MODULE_AUTHOR("Ed Lin");
345 MODULE_DESCRIPTION("Promise Technology SuperTrak EX Controllers");
346 MODULE_LICENSE("GPL");
347 MODULE_VERSION(ST_DRIVER_VERSION);
348
349 static void stex_gettime(__le32 *time)
350 {
351 struct timeval tv;
352 do_gettimeofday(&tv);
353
354 *time = cpu_to_le32(tv.tv_sec & 0xffffffff);
355 *(time + 1) = cpu_to_le32((tv.tv_sec >> 16) >> 16);
356 }
357
358 static struct status_msg *stex_get_status(struct st_hba *hba)
359 {
360 struct status_msg *status =
361 hba->status_buffer + hba->status_tail;
362
363 ++hba->status_tail;
364 hba->status_tail %= MU_STATUS_COUNT;
365
366 return status;
367 }
368
369 static void stex_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq)
370 {
371 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
372
373 cmd->sense_buffer[0] = 0x70; /* fixed format, current */
374 cmd->sense_buffer[2] = sk;
375 cmd->sense_buffer[7] = 18 - 8; /* additional sense length */
376 cmd->sense_buffer[12] = asc;
377 cmd->sense_buffer[13] = ascq;
378 }
379
380 static void stex_invalid_field(struct scsi_cmnd *cmd,
381 void (*done)(struct scsi_cmnd *))
382 {
383 /* "Invalid field in cbd" */
384 stex_set_sense(cmd, ILLEGAL_REQUEST, 0x24, 0x0);
385 done(cmd);
386 }
387
388 static struct req_msg *stex_alloc_req(struct st_hba *hba)
389 {
390 struct req_msg *req = ((struct req_msg *)hba->dma_mem) +
391 hba->req_head;
392
393 ++hba->req_head;
394 hba->req_head %= MU_REQ_COUNT;
395
396 return req;
397 }
398
399 static int stex_map_sg(struct st_hba *hba,
400 struct req_msg *req, struct st_ccb *ccb)
401 {
402 struct pci_dev *pdev = hba->pdev;
403 struct scsi_cmnd *cmd;
404 dma_addr_t dma_handle;
405 struct scatterlist *src;
406 struct st_sgtable *dst;
407 int i;
408
409 cmd = ccb->cmd;
410 dst = (struct st_sgtable *)req->variable;
411 dst->max_sg_count = cpu_to_le16(ST_MAX_SG);
412 dst->sz_in_byte = cpu_to_le32(cmd->request_bufflen);
413
414 if (cmd->use_sg) {
415 int n_elem;
416
417 src = (struct scatterlist *) cmd->request_buffer;
418 n_elem = pci_map_sg(pdev, src,
419 cmd->use_sg, cmd->sc_data_direction);
420 if (n_elem <= 0)
421 return -EIO;
422
423 ccb->sg_count = n_elem;
424 dst->sg_count = cpu_to_le16((u16)n_elem);
425
426 for (i = 0; i < n_elem; i++, src++) {
427 dst->table[i].count = cpu_to_le32((u32)sg_dma_len(src));
428 dst->table[i].addr =
429 cpu_to_le32(sg_dma_address(src) & 0xffffffff);
430 dst->table[i].addr_hi =
431 cpu_to_le32((sg_dma_address(src) >> 16) >> 16);
432 dst->table[i].ctrl = SG_CF_64B | SG_CF_HOST;
433 }
434 dst->table[--i].ctrl |= SG_CF_EOT;
435 return 0;
436 }
437
438 dma_handle = pci_map_single(pdev, cmd->request_buffer,
439 cmd->request_bufflen, cmd->sc_data_direction);
440 cmd->SCp.dma_handle = dma_handle;
441
442 ccb->sg_count = 1;
443 dst->sg_count = cpu_to_le16(1);
444 dst->table[0].addr = cpu_to_le32(dma_handle & 0xffffffff);
445 dst->table[0].addr_hi = cpu_to_le32((dma_handle >> 16) >> 16);
446 dst->table[0].count = cpu_to_le32((u32)cmd->request_bufflen);
447 dst->table[0].ctrl = SG_CF_EOT | SG_CF_64B | SG_CF_HOST;
448
449 return 0;
450 }
451
452 static void stex_internal_copy(struct scsi_cmnd *cmd,
453 const void *src, size_t *count, int sg_count, int direction)
454 {
455 size_t lcount;
456 size_t len;
457 void *s, *d, *base = NULL;
458 if (*count > cmd->request_bufflen)
459 *count = cmd->request_bufflen;
460 lcount = *count;
461 while (lcount) {
462 len = lcount;
463 s = (void *)src;
464 if (cmd->use_sg) {
465 size_t offset = *count - lcount;
466 s += offset;
467 base = scsi_kmap_atomic_sg(cmd->request_buffer,
468 sg_count, &offset, &len);
469 if (base == NULL) {
470 *count -= lcount;
471 return;
472 }
473 d = base + offset;
474 } else
475 d = cmd->request_buffer;
476
477 if (direction == ST_TO_CMD)
478 memcpy(d, s, len);
479 else
480 memcpy(s, d, len);
481
482 lcount -= len;
483 if (cmd->use_sg)
484 scsi_kunmap_atomic_sg(base);
485 }
486 }
487
488 static int stex_direct_copy(struct scsi_cmnd *cmd,
489 const void *src, size_t count)
490 {
491 struct st_hba *hba = (struct st_hba *) &cmd->device->host->hostdata[0];
492 size_t cp_len = count;
493 int n_elem = 0;
494
495 if (cmd->use_sg) {
496 n_elem = pci_map_sg(hba->pdev, cmd->request_buffer,
497 cmd->use_sg, cmd->sc_data_direction);
498 if (n_elem <= 0)
499 return 0;
500 }
501
502 stex_internal_copy(cmd, src, &cp_len, n_elem, ST_TO_CMD);
503
504 if (cmd->use_sg)
505 pci_unmap_sg(hba->pdev, cmd->request_buffer,
506 cmd->use_sg, cmd->sc_data_direction);
507 return cp_len == count;
508 }
509
510 static void stex_controller_info(struct st_hba *hba, struct st_ccb *ccb)
511 {
512 struct st_frame *p;
513 size_t count = sizeof(struct st_frame);
514
515 p = hba->copy_buffer;
516 stex_internal_copy(ccb->cmd, p, &count, ccb->sg_count, ST_FROM_CMD);
517 memset(p->base, 0, sizeof(u32)*6);
518 *(unsigned long *)(p->base) = pci_resource_start(hba->pdev, 0);
519 p->rom_addr = 0;
520
521 p->drv_ver.major = ST_VER_MAJOR;
522 p->drv_ver.minor = ST_VER_MINOR;
523 p->drv_ver.oem = ST_OEM;
524 p->drv_ver.build = ST_BUILD_VER;
525
526 p->bus = hba->pdev->bus->number;
527 p->slot = hba->pdev->devfn;
528 p->irq_level = 0;
529 p->irq_vec = hba->pdev->irq;
530 p->id = hba->pdev->vendor << 16 | hba->pdev->device;
531 p->subid =
532 hba->pdev->subsystem_vendor << 16 | hba->pdev->subsystem_device;
533
534 stex_internal_copy(ccb->cmd, p, &count, ccb->sg_count, ST_TO_CMD);
535 }
536
537 static void
538 stex_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag)
539 {
540 req->tag = cpu_to_le16(tag);
541 req->task_attr = TASK_ATTRIBUTE_SIMPLE;
542 req->task_manage = 0; /* not supported yet */
543
544 hba->ccb[tag].req = req;
545 hba->out_req_cnt++;
546
547 writel(hba->req_head, hba->mmio_base + IMR0);
548 writel(MU_INBOUND_DOORBELL_REQHEADCHANGED, hba->mmio_base + IDBL);
549 readl(hba->mmio_base + IDBL); /* flush */
550 }
551
552 static int
553 stex_slave_alloc(struct scsi_device *sdev)
554 {
555 /* Cheat: usually extracted from Inquiry data */
556 sdev->tagged_supported = 1;
557
558 scsi_activate_tcq(sdev, sdev->host->can_queue);
559
560 return 0;
561 }
562
563 static int
564 stex_slave_config(struct scsi_device *sdev)
565 {
566 sdev->use_10_for_rw = 1;
567 sdev->use_10_for_ms = 1;
568 sdev->timeout = 60 * HZ;
569 sdev->tagged_supported = 1;
570
571 return 0;
572 }
573
574 static void
575 stex_slave_destroy(struct scsi_device *sdev)
576 {
577 scsi_deactivate_tcq(sdev, 1);
578 }
579
580 static int
581 stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
582 {
583 struct st_hba *hba;
584 struct Scsi_Host *host;
585 unsigned int id,lun;
586 struct req_msg *req;
587 u16 tag;
588 host = cmd->device->host;
589 id = cmd->device->id;
590 lun = cmd->device->channel; /* firmware lun issue work around */
591 hba = (struct st_hba *) &host->hostdata[0];
592
593 switch (cmd->cmnd[0]) {
594 case MODE_SENSE_10:
595 {
596 static char ms10_caching_page[12] =
597 { 0, 0x12, 0, 0, 0, 0, 0, 0, 0x8, 0xa, 0x4, 0 };
598 unsigned char page;
599 page = cmd->cmnd[2] & 0x3f;
600 if (page == 0x8 || page == 0x3f) {
601 stex_direct_copy(cmd, ms10_caching_page,
602 sizeof(ms10_caching_page));
603 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
604 done(cmd);
605 } else
606 stex_invalid_field(cmd, done);
607 return 0;
608 }
609 case INQUIRY:
610 if (id != ST_MAX_ARRAY_SUPPORTED)
611 break;
612 if (lun == 0 && (cmd->cmnd[1] & INQUIRY_EVPD) == 0) {
613 stex_direct_copy(cmd, console_inq_page,
614 sizeof(console_inq_page));
615 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
616 done(cmd);
617 } else
618 stex_invalid_field(cmd, done);
619 return 0;
620 case PASSTHRU_CMD:
621 if (cmd->cmnd[1] == PASSTHRU_GET_DRVVER) {
622 struct st_drvver ver;
623 ver.major = ST_VER_MAJOR;
624 ver.minor = ST_VER_MINOR;
625 ver.oem = ST_OEM;
626 ver.build = ST_BUILD_VER;
627 ver.signature[0] = PASSTHRU_SIGNATURE;
628 ver.console_id = ST_MAX_ARRAY_SUPPORTED;
629 ver.host_no = hba->host->host_no;
630 cmd->result = stex_direct_copy(cmd, &ver, sizeof(ver)) ?
631 DID_OK << 16 | COMMAND_COMPLETE << 8 :
632 DID_ERROR << 16 | COMMAND_COMPLETE << 8;
633 done(cmd);
634 return 0;
635 }
636 default:
637 break;
638 }
639
640 cmd->scsi_done = done;
641
642 tag = cmd->request->tag;
643
644 if (unlikely(tag >= host->can_queue))
645 return SCSI_MLQUEUE_HOST_BUSY;
646
647 req = stex_alloc_req(hba);
648
649 if (hba->cardtype == st_yosemite) {
650 req->lun = lun * (ST_MAX_TARGET_NUM - 1) + id;
651 req->target = 0;
652 } else {
653 req->lun = lun;
654 req->target = id;
655 }
656
657 /* cdb */
658 memcpy(req->cdb, cmd->cmnd, STEX_CDB_LENGTH);
659
660 hba->ccb[tag].cmd = cmd;
661 hba->ccb[tag].sense_bufflen = SCSI_SENSE_BUFFERSIZE;
662 hba->ccb[tag].sense_buffer = cmd->sense_buffer;
663 hba->ccb[tag].req_type = 0;
664
665 if (cmd->sc_data_direction != DMA_NONE)
666 stex_map_sg(hba, req, &hba->ccb[tag]);
667
668 stex_send_cmd(hba, req, tag);
669 return 0;
670 }
671
672 static void stex_unmap_sg(struct st_hba *hba, struct scsi_cmnd *cmd)
673 {
674 if (cmd->sc_data_direction != DMA_NONE) {
675 if (cmd->use_sg)
676 pci_unmap_sg(hba->pdev, cmd->request_buffer,
677 cmd->use_sg, cmd->sc_data_direction);
678 else
679 pci_unmap_single(hba->pdev, cmd->SCp.dma_handle,
680 cmd->request_bufflen, cmd->sc_data_direction);
681 }
682 }
683
684 static void stex_scsi_done(struct st_ccb *ccb)
685 {
686 struct scsi_cmnd *cmd = ccb->cmd;
687 int result;
688
689 if (ccb->srb_status == SRB_STATUS_SUCCESS || ccb->srb_status == 0) {
690 result = ccb->scsi_status;
691 switch (ccb->scsi_status) {
692 case SAM_STAT_GOOD:
693 result |= DID_OK << 16 | COMMAND_COMPLETE << 8;
694 break;
695 case SAM_STAT_CHECK_CONDITION:
696 result |= DRIVER_SENSE << 24;
697 break;
698 case SAM_STAT_BUSY:
699 result |= DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
700 break;
701 default:
702 result |= DID_ERROR << 16 | COMMAND_COMPLETE << 8;
703 break;
704 }
705 }
706 else if (ccb->srb_status & SRB_SEE_SENSE)
707 result = DRIVER_SENSE << 24 | SAM_STAT_CHECK_CONDITION;
708 else switch (ccb->srb_status) {
709 case SRB_STATUS_SELECTION_TIMEOUT:
710 result = DID_NO_CONNECT << 16 | COMMAND_COMPLETE << 8;
711 break;
712 case SRB_STATUS_BUSY:
713 result = DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
714 break;
715 case SRB_STATUS_INVALID_REQUEST:
716 case SRB_STATUS_ERROR:
717 default:
718 result = DID_ERROR << 16 | COMMAND_COMPLETE << 8;
719 break;
720 }
721
722 cmd->result = result;
723 cmd->scsi_done(cmd);
724 }
725
726 static void stex_copy_data(struct st_ccb *ccb,
727 struct status_msg *resp, unsigned int variable)
728 {
729 size_t count = variable;
730 if (resp->scsi_status != SAM_STAT_GOOD) {
731 if (ccb->sense_buffer != NULL)
732 memcpy(ccb->sense_buffer, resp->variable,
733 min(variable, ccb->sense_bufflen));
734 return;
735 }
736
737 if (ccb->cmd == NULL)
738 return;
739 stex_internal_copy(ccb->cmd,
740 resp->variable, &count, ccb->sg_count, ST_TO_CMD);
741 }
742
743 static void stex_ys_commands(struct st_hba *hba,
744 struct st_ccb *ccb, struct status_msg *resp)
745 {
746 size_t count;
747
748 if (ccb->cmd->cmnd[0] == MGT_CMD &&
749 resp->scsi_status != SAM_STAT_CHECK_CONDITION) {
750 ccb->cmd->request_bufflen =
751 le32_to_cpu(*(__le32 *)&resp->variable[0]);
752 return;
753 }
754
755 if (resp->srb_status != 0)
756 return;
757
758 /* determine inquiry command status by DeviceTypeQualifier */
759 if (ccb->cmd->cmnd[0] == INQUIRY &&
760 resp->scsi_status == SAM_STAT_GOOD) {
761 ST_INQ *inq_data;
762
763 count = STEX_EXTRA_SIZE;
764 stex_internal_copy(ccb->cmd, hba->copy_buffer,
765 &count, ccb->sg_count, ST_FROM_CMD);
766 inq_data = (ST_INQ *)hba->copy_buffer;
767 if (inq_data->DeviceTypeQualifier != 0)
768 ccb->srb_status = SRB_STATUS_SELECTION_TIMEOUT;
769 else
770 ccb->srb_status = SRB_STATUS_SUCCESS;
771 } else if (ccb->cmd->cmnd[0] == REPORT_LUNS) {
772 u8 *report_lun_data = (u8 *)hba->copy_buffer;
773
774 count = STEX_EXTRA_SIZE;
775 stex_internal_copy(ccb->cmd, report_lun_data,
776 &count, ccb->sg_count, ST_FROM_CMD);
777 if (report_lun_data[2] || report_lun_data[3]) {
778 report_lun_data[2] = 0x00;
779 report_lun_data[3] = 0x08;
780 stex_internal_copy(ccb->cmd, report_lun_data,
781 &count, ccb->sg_count, ST_TO_CMD);
782 }
783 }
784 }
785
786 static void stex_mu_intr(struct st_hba *hba, u32 doorbell)
787 {
788 void __iomem *base = hba->mmio_base;
789 struct status_msg *resp;
790 struct st_ccb *ccb;
791 unsigned int size;
792 u16 tag;
793
794 if (!(doorbell & MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED))
795 return;
796
797 /* status payloads */
798 hba->status_head = readl(base + OMR1);
799 if (unlikely(hba->status_head >= MU_STATUS_COUNT)) {
800 printk(KERN_WARNING DRV_NAME "(%s): invalid status head\n",
801 pci_name(hba->pdev));
802 return;
803 }
804
805 /*
806 * it's not a valid status payload if:
807 * 1. there are no pending requests(e.g. during init stage)
808 * 2. there are some pending requests, but the controller is in
809 * reset status, and its type is not st_yosemite
810 * firmware of st_yosemite in reset status will return pending requests
811 * to driver, so we allow it to pass
812 */
813 if (unlikely(hba->out_req_cnt <= 0 ||
814 (hba->mu_status == MU_STATE_RESETTING &&
815 hba->cardtype != st_yosemite))) {
816 hba->status_tail = hba->status_head;
817 goto update_status;
818 }
819
820 while (hba->status_tail != hba->status_head) {
821 resp = stex_get_status(hba);
822 tag = le16_to_cpu(resp->tag);
823 if (unlikely(tag >= hba->host->can_queue)) {
824 printk(KERN_WARNING DRV_NAME
825 "(%s): invalid tag\n", pci_name(hba->pdev));
826 continue;
827 }
828
829 ccb = &hba->ccb[tag];
830 if (hba->wait_ccb == ccb)
831 hba->wait_ccb = NULL;
832 if (unlikely(ccb->req == NULL)) {
833 printk(KERN_WARNING DRV_NAME
834 "(%s): lagging req\n", pci_name(hba->pdev));
835 hba->out_req_cnt--;
836 continue;
837 }
838
839 size = resp->payload_sz * sizeof(u32); /* payload size */
840 if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN ||
841 size > sizeof(*resp))) {
842 printk(KERN_WARNING DRV_NAME "(%s): bad status size\n",
843 pci_name(hba->pdev));
844 } else {
845 size -= sizeof(*resp) - STATUS_VAR_LEN; /* copy size */
846 if (size)
847 stex_copy_data(ccb, resp, size);
848 }
849
850 ccb->srb_status = resp->srb_status;
851 ccb->scsi_status = resp->scsi_status;
852
853 if (likely(ccb->cmd != NULL)) {
854 if (hba->cardtype == st_yosemite)
855 stex_ys_commands(hba, ccb, resp);
856
857 if (unlikely(ccb->cmd->cmnd[0] == PASSTHRU_CMD &&
858 ccb->cmd->cmnd[1] == PASSTHRU_GET_ADAPTER))
859 stex_controller_info(hba, ccb);
860
861 stex_unmap_sg(hba, ccb->cmd);
862 stex_scsi_done(ccb);
863 hba->out_req_cnt--;
864 } else if (ccb->req_type & PASSTHRU_REQ_TYPE) {
865 hba->out_req_cnt--;
866 if (ccb->req_type & PASSTHRU_REQ_NO_WAKEUP) {
867 ccb->req_type = 0;
868 continue;
869 }
870 ccb->req_type = 0;
871 if (waitqueue_active(&hba->waitq))
872 wake_up(&hba->waitq);
873 }
874 }
875
876 update_status:
877 writel(hba->status_head, base + IMR1);
878 readl(base + IMR1); /* flush */
879 }
880
881 static irqreturn_t stex_intr(int irq, void *__hba)
882 {
883 struct st_hba *hba = __hba;
884 void __iomem *base = hba->mmio_base;
885 u32 data;
886 unsigned long flags;
887 int handled = 0;
888
889 spin_lock_irqsave(hba->host->host_lock, flags);
890
891 data = readl(base + ODBL);
892
893 if (data && data != 0xffffffff) {
894 /* clear the interrupt */
895 writel(data, base + ODBL);
896 readl(base + ODBL); /* flush */
897 stex_mu_intr(hba, data);
898 handled = 1;
899 }
900
901 spin_unlock_irqrestore(hba->host->host_lock, flags);
902
903 return IRQ_RETVAL(handled);
904 }
905
906 static int stex_handshake(struct st_hba *hba)
907 {
908 void __iomem *base = hba->mmio_base;
909 struct handshake_frame *h;
910 dma_addr_t status_phys;
911 u32 data;
912 unsigned long before;
913
914 if (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
915 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
916 readl(base + IDBL);
917 before = jiffies;
918 while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
919 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
920 printk(KERN_ERR DRV_NAME
921 "(%s): no handshake signature\n",
922 pci_name(hba->pdev));
923 return -1;
924 }
925 rmb();
926 msleep(1);
927 }
928 }
929
930 udelay(10);
931
932 data = readl(base + OMR1);
933 if ((data & 0xffff0000) == MU_HANDSHAKE_SIGNATURE_HALF) {
934 data &= 0x0000ffff;
935 if (hba->host->can_queue > data)
936 hba->host->can_queue = data;
937 }
938
939 h = (struct handshake_frame *)(hba->dma_mem + MU_REQ_BUFFER_SIZE);
940 h->rb_phy = cpu_to_le32(hba->dma_handle);
941 h->rb_phy_hi = cpu_to_le32((hba->dma_handle >> 16) >> 16);
942 h->req_sz = cpu_to_le16(sizeof(struct req_msg));
943 h->req_cnt = cpu_to_le16(MU_REQ_COUNT);
944 h->status_sz = cpu_to_le16(sizeof(struct status_msg));
945 h->status_cnt = cpu_to_le16(MU_STATUS_COUNT);
946 stex_gettime(&h->hosttime);
947 h->partner_type = HMU_PARTNER_TYPE;
948 if (hba->dma_size > STEX_BUFFER_SIZE) {
949 h->extra_offset = cpu_to_le32(STEX_BUFFER_SIZE);
950 h->extra_size = cpu_to_le32(ST_ADDITIONAL_MEM);
951 } else
952 h->extra_offset = h->extra_size = 0;
953
954 status_phys = hba->dma_handle + MU_REQ_BUFFER_SIZE;
955 writel(status_phys, base + IMR0);
956 readl(base + IMR0);
957 writel((status_phys >> 16) >> 16, base + IMR1);
958 readl(base + IMR1);
959
960 writel((status_phys >> 16) >> 16, base + OMR0); /* old fw compatible */
961 readl(base + OMR0);
962 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
963 readl(base + IDBL); /* flush */
964
965 udelay(10);
966 before = jiffies;
967 while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
968 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
969 printk(KERN_ERR DRV_NAME
970 "(%s): no signature after handshake frame\n",
971 pci_name(hba->pdev));
972 return -1;
973 }
974 rmb();
975 msleep(1);
976 }
977
978 writel(0, base + IMR0);
979 readl(base + IMR0);
980 writel(0, base + OMR0);
981 readl(base + OMR0);
982 writel(0, base + IMR1);
983 readl(base + IMR1);
984 writel(0, base + OMR1);
985 readl(base + OMR1); /* flush */
986 hba->mu_status = MU_STATE_STARTED;
987 return 0;
988 }
989
990 static int stex_abort(struct scsi_cmnd *cmd)
991 {
992 struct Scsi_Host *host = cmd->device->host;
993 struct st_hba *hba = (struct st_hba *)host->hostdata;
994 u16 tag = cmd->request->tag;
995 void __iomem *base;
996 u32 data;
997 int result = SUCCESS;
998 unsigned long flags;
999 base = hba->mmio_base;
1000 spin_lock_irqsave(host->host_lock, flags);
1001 if (tag < host->can_queue && hba->ccb[tag].cmd == cmd)
1002 hba->wait_ccb = &hba->ccb[tag];
1003 else {
1004 for (tag = 0; tag < host->can_queue; tag++)
1005 if (hba->ccb[tag].cmd == cmd) {
1006 hba->wait_ccb = &hba->ccb[tag];
1007 break;
1008 }
1009 if (tag >= host->can_queue)
1010 goto out;
1011 }
1012
1013 data = readl(base + ODBL);
1014 if (data == 0 || data == 0xffffffff)
1015 goto fail_out;
1016
1017 writel(data, base + ODBL);
1018 readl(base + ODBL); /* flush */
1019
1020 stex_mu_intr(hba, data);
1021
1022 if (hba->wait_ccb == NULL) {
1023 printk(KERN_WARNING DRV_NAME
1024 "(%s): lost interrupt\n", pci_name(hba->pdev));
1025 goto out;
1026 }
1027
1028 fail_out:
1029 stex_unmap_sg(hba, cmd);
1030 hba->wait_ccb->req = NULL; /* nullify the req's future return */
1031 hba->wait_ccb = NULL;
1032 result = FAILED;
1033 out:
1034 spin_unlock_irqrestore(host->host_lock, flags);
1035 return result;
1036 }
1037
1038 static void stex_hard_reset(struct st_hba *hba)
1039 {
1040 struct pci_bus *bus;
1041 int i;
1042 u16 pci_cmd;
1043 u8 pci_bctl;
1044
1045 for (i = 0; i < 16; i++)
1046 pci_read_config_dword(hba->pdev, i * 4,
1047 &hba->pdev->saved_config_space[i]);
1048
1049 /* Reset secondary bus. Our controller(MU/ATU) is the only device on
1050 secondary bus. Consult Intel 80331/3 developer's manual for detail */
1051 bus = hba->pdev->bus;
1052 pci_read_config_byte(bus->self, PCI_BRIDGE_CONTROL, &pci_bctl);
1053 pci_bctl |= PCI_BRIDGE_CTL_BUS_RESET;
1054 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
1055 msleep(1);
1056 pci_bctl &= ~PCI_BRIDGE_CTL_BUS_RESET;
1057 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
1058
1059 for (i = 0; i < MU_HARD_RESET_WAIT; i++) {
1060 pci_read_config_word(hba->pdev, PCI_COMMAND, &pci_cmd);
1061 if (pci_cmd != 0xffff && (pci_cmd & PCI_COMMAND_MASTER))
1062 break;
1063 msleep(1);
1064 }
1065
1066 ssleep(5);
1067 for (i = 0; i < 16; i++)
1068 pci_write_config_dword(hba->pdev, i * 4,
1069 hba->pdev->saved_config_space[i]);
1070 }
1071
1072 static int stex_reset(struct scsi_cmnd *cmd)
1073 {
1074 struct st_hba *hba;
1075 unsigned long flags;
1076 unsigned long before;
1077 hba = (struct st_hba *) &cmd->device->host->hostdata[0];
1078
1079 hba->mu_status = MU_STATE_RESETTING;
1080
1081 if (hba->cardtype == st_shasta)
1082 stex_hard_reset(hba);
1083
1084 if (hba->cardtype != st_yosemite) {
1085 if (stex_handshake(hba)) {
1086 printk(KERN_WARNING DRV_NAME
1087 "(%s): resetting: handshake failed\n",
1088 pci_name(hba->pdev));
1089 return FAILED;
1090 }
1091 spin_lock_irqsave(hba->host->host_lock, flags);
1092 hba->req_head = 0;
1093 hba->req_tail = 0;
1094 hba->status_head = 0;
1095 hba->status_tail = 0;
1096 hba->out_req_cnt = 0;
1097 spin_unlock_irqrestore(hba->host->host_lock, flags);
1098 return SUCCESS;
1099 }
1100
1101 /* st_yosemite */
1102 writel(MU_INBOUND_DOORBELL_RESET, hba->mmio_base + IDBL);
1103 readl(hba->mmio_base + IDBL); /* flush */
1104 before = jiffies;
1105 while (hba->out_req_cnt > 0) {
1106 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) {
1107 printk(KERN_WARNING DRV_NAME
1108 "(%s): reset timeout\n", pci_name(hba->pdev));
1109 return FAILED;
1110 }
1111 msleep(1);
1112 }
1113
1114 hba->mu_status = MU_STATE_STARTED;
1115 return SUCCESS;
1116 }
1117
1118 static int stex_biosparam(struct scsi_device *sdev,
1119 struct block_device *bdev, sector_t capacity, int geom[])
1120 {
1121 int heads = 255, sectors = 63;
1122
1123 if (capacity < 0x200000) {
1124 heads = 64;
1125 sectors = 32;
1126 }
1127
1128 sector_div(capacity, heads * sectors);
1129
1130 geom[0] = heads;
1131 geom[1] = sectors;
1132 geom[2] = capacity;
1133
1134 return 0;
1135 }
1136
1137 static struct scsi_host_template driver_template = {
1138 .module = THIS_MODULE,
1139 .name = DRV_NAME,
1140 .proc_name = DRV_NAME,
1141 .bios_param = stex_biosparam,
1142 .queuecommand = stex_queuecommand,
1143 .slave_alloc = stex_slave_alloc,
1144 .slave_configure = stex_slave_config,
1145 .slave_destroy = stex_slave_destroy,
1146 .eh_abort_handler = stex_abort,
1147 .eh_host_reset_handler = stex_reset,
1148 .can_queue = ST_CAN_QUEUE,
1149 .this_id = -1,
1150 .sg_tablesize = ST_MAX_SG,
1151 .cmd_per_lun = ST_CMD_PER_LUN,
1152 };
1153
1154 static int stex_set_dma_mask(struct pci_dev * pdev)
1155 {
1156 int ret;
1157 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)
1158 && !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))
1159 return 0;
1160 ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1161 if (!ret)
1162 ret = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1163 return ret;
1164 }
1165
1166 static int __devinit
1167 stex_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1168 {
1169 struct st_hba *hba;
1170 struct Scsi_Host *host;
1171 int err;
1172
1173 err = pci_enable_device(pdev);
1174 if (err)
1175 return err;
1176
1177 pci_set_master(pdev);
1178
1179 host = scsi_host_alloc(&driver_template, sizeof(struct st_hba));
1180
1181 if (!host) {
1182 printk(KERN_ERR DRV_NAME "(%s): scsi_host_alloc failed\n",
1183 pci_name(pdev));
1184 err = -ENOMEM;
1185 goto out_disable;
1186 }
1187
1188 hba = (struct st_hba *)host->hostdata;
1189 memset(hba, 0, sizeof(struct st_hba));
1190
1191 err = pci_request_regions(pdev, DRV_NAME);
1192 if (err < 0) {
1193 printk(KERN_ERR DRV_NAME "(%s): request regions failed\n",
1194 pci_name(pdev));
1195 goto out_scsi_host_put;
1196 }
1197
1198 hba->mmio_base = ioremap(pci_resource_start(pdev, 0),
1199 pci_resource_len(pdev, 0));
1200 if ( !hba->mmio_base) {
1201 printk(KERN_ERR DRV_NAME "(%s): memory map failed\n",
1202 pci_name(pdev));
1203 err = -ENOMEM;
1204 goto out_release_regions;
1205 }
1206
1207 err = stex_set_dma_mask(pdev);
1208 if (err) {
1209 printk(KERN_ERR DRV_NAME "(%s): set dma mask failed\n",
1210 pci_name(pdev));
1211 goto out_iounmap;
1212 }
1213
1214 hba->cardtype = (unsigned int) id->driver_data;
1215 if (hba->cardtype == st_vsc && (pdev->subsystem_device & 0xf) == 0x1)
1216 hba->cardtype = st_vsc1;
1217 hba->dma_size = (hba->cardtype == st_vsc1) ?
1218 (STEX_BUFFER_SIZE + ST_ADDITIONAL_MEM) : (STEX_BUFFER_SIZE);
1219 hba->dma_mem = dma_alloc_coherent(&pdev->dev,
1220 hba->dma_size, &hba->dma_handle, GFP_KERNEL);
1221 if (!hba->dma_mem) {
1222 err = -ENOMEM;
1223 printk(KERN_ERR DRV_NAME "(%s): dma mem alloc failed\n",
1224 pci_name(pdev));
1225 goto out_iounmap;
1226 }
1227
1228 hba->status_buffer =
1229 (struct status_msg *)(hba->dma_mem + MU_REQ_BUFFER_SIZE);
1230 hba->copy_buffer = hba->dma_mem + MU_BUFFER_SIZE;
1231 hba->mu_status = MU_STATE_STARTING;
1232
1233 /* firmware uses id/lun pair for a logical drive, but lun would be
1234 always 0 if CONFIG_SCSI_MULTI_LUN not configured, so we use
1235 channel to map lun here */
1236 host->max_channel = ST_MAX_LUN_PER_TARGET - 1;
1237 host->max_id = ST_MAX_TARGET_NUM;
1238 host->max_lun = 1;
1239 host->unique_id = host->host_no;
1240 host->max_cmd_len = STEX_CDB_LENGTH;
1241
1242 hba->host = host;
1243 hba->pdev = pdev;
1244 init_waitqueue_head(&hba->waitq);
1245
1246 err = request_irq(pdev->irq, stex_intr, IRQF_SHARED, DRV_NAME, hba);
1247 if (err) {
1248 printk(KERN_ERR DRV_NAME "(%s): request irq failed\n",
1249 pci_name(pdev));
1250 goto out_pci_free;
1251 }
1252
1253 err = stex_handshake(hba);
1254 if (err)
1255 goto out_free_irq;
1256
1257 err = scsi_init_shared_tag_map(host, host->can_queue);
1258 if (err) {
1259 printk(KERN_ERR DRV_NAME "(%s): init shared queue failed\n",
1260 pci_name(pdev));
1261 goto out_free_irq;
1262 }
1263
1264 pci_set_drvdata(pdev, hba);
1265
1266 err = scsi_add_host(host, &pdev->dev);
1267 if (err) {
1268 printk(KERN_ERR DRV_NAME "(%s): scsi_add_host failed\n",
1269 pci_name(pdev));
1270 goto out_free_irq;
1271 }
1272
1273 scsi_scan_host(host);
1274
1275 return 0;
1276
1277 out_free_irq:
1278 free_irq(pdev->irq, hba);
1279 out_pci_free:
1280 dma_free_coherent(&pdev->dev, hba->dma_size,
1281 hba->dma_mem, hba->dma_handle);
1282 out_iounmap:
1283 iounmap(hba->mmio_base);
1284 out_release_regions:
1285 pci_release_regions(pdev);
1286 out_scsi_host_put:
1287 scsi_host_put(host);
1288 out_disable:
1289 pci_disable_device(pdev);
1290
1291 return err;
1292 }
1293
1294 static void stex_hba_stop(struct st_hba *hba)
1295 {
1296 struct req_msg *req;
1297 unsigned long flags;
1298 unsigned long before;
1299 u16 tag = 0;
1300
1301 spin_lock_irqsave(hba->host->host_lock, flags);
1302 req = stex_alloc_req(hba);
1303 memset(req->cdb, 0, STEX_CDB_LENGTH);
1304
1305 if (hba->cardtype == st_yosemite) {
1306 req->cdb[0] = MGT_CMD;
1307 req->cdb[1] = MGT_CMD_SIGNATURE;
1308 req->cdb[2] = CTLR_CONFIG_CMD;
1309 req->cdb[3] = CTLR_SHUTDOWN;
1310 } else {
1311 req->cdb[0] = CONTROLLER_CMD;
1312 req->cdb[1] = CTLR_POWER_STATE_CHANGE;
1313 req->cdb[2] = CTLR_POWER_SAVING;
1314 }
1315
1316 hba->ccb[tag].cmd = NULL;
1317 hba->ccb[tag].sg_count = 0;
1318 hba->ccb[tag].sense_bufflen = 0;
1319 hba->ccb[tag].sense_buffer = NULL;
1320 hba->ccb[tag].req_type |= PASSTHRU_REQ_TYPE;
1321
1322 stex_send_cmd(hba, req, tag);
1323 spin_unlock_irqrestore(hba->host->host_lock, flags);
1324
1325 before = jiffies;
1326 while (hba->ccb[tag].req_type & PASSTHRU_REQ_TYPE) {
1327 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ))
1328 return;
1329 msleep(10);
1330 }
1331 }
1332
1333 static void stex_hba_free(struct st_hba *hba)
1334 {
1335 free_irq(hba->pdev->irq, hba);
1336
1337 iounmap(hba->mmio_base);
1338
1339 pci_release_regions(hba->pdev);
1340
1341 dma_free_coherent(&hba->pdev->dev, hba->dma_size,
1342 hba->dma_mem, hba->dma_handle);
1343 }
1344
1345 static void stex_remove(struct pci_dev *pdev)
1346 {
1347 struct st_hba *hba = pci_get_drvdata(pdev);
1348
1349 scsi_remove_host(hba->host);
1350
1351 pci_set_drvdata(pdev, NULL);
1352
1353 stex_hba_stop(hba);
1354
1355 stex_hba_free(hba);
1356
1357 scsi_host_put(hba->host);
1358
1359 pci_disable_device(pdev);
1360 }
1361
1362 static void stex_shutdown(struct pci_dev *pdev)
1363 {
1364 struct st_hba *hba = pci_get_drvdata(pdev);
1365
1366 stex_hba_stop(hba);
1367 }
1368
1369 static struct pci_device_id stex_pci_tbl[] = {
1370 /* st_shasta */
1371 { 0x105a, 0x8350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1372 st_shasta }, /* SuperTrak EX8350/8300/16350/16300 */
1373 { 0x105a, 0xc350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1374 st_shasta }, /* SuperTrak EX12350 */
1375 { 0x105a, 0x4302, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1376 st_shasta }, /* SuperTrak EX4350 */
1377 { 0x105a, 0xe350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1378 st_shasta }, /* SuperTrak EX24350 */
1379
1380 /* st_vsc */
1381 { 0x105a, 0x7250, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_vsc },
1382
1383 /* st_yosemite */
1384 { 0x105a, 0x8650, PCI_ANY_ID, 0x4600, 0, 0,
1385 st_yosemite }, /* SuperTrak EX4650 */
1386 { 0x105a, 0x8650, PCI_ANY_ID, 0x4610, 0, 0,
1387 st_yosemite }, /* SuperTrak EX4650o */
1388 { 0x105a, 0x8650, PCI_ANY_ID, 0x8600, 0, 0,
1389 st_yosemite }, /* SuperTrak EX8650EL */
1390 { 0x105a, 0x8650, PCI_ANY_ID, 0x8601, 0, 0,
1391 st_yosemite }, /* SuperTrak EX8650 */
1392 { 0x105a, 0x8650, PCI_ANY_ID, 0x8602, 0, 0,
1393 st_yosemite }, /* SuperTrak EX8654 */
1394 { 0x105a, 0x8650, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1395 st_yosemite }, /* generic st_yosemite */
1396 { } /* terminate list */
1397 };
1398 MODULE_DEVICE_TABLE(pci, stex_pci_tbl);
1399
1400 static struct pci_driver stex_pci_driver = {
1401 .name = DRV_NAME,
1402 .id_table = stex_pci_tbl,
1403 .probe = stex_probe,
1404 .remove = __devexit_p(stex_remove),
1405 .shutdown = stex_shutdown,
1406 };
1407
1408 static int __init stex_init(void)
1409 {
1410 printk(KERN_INFO DRV_NAME
1411 ": Promise SuperTrak EX Driver version: %s\n",
1412 ST_DRIVER_VERSION);
1413
1414 return pci_register_driver(&stex_pci_driver);
1415 }
1416
1417 static void __exit stex_exit(void)
1418 {
1419 pci_unregister_driver(&stex_pci_driver);
1420 }
1421
1422 module_init(stex_init);
1423 module_exit(stex_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree