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[PATCH] i386: Add dwarf2 annotations to *_user and checksum functions
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / stex.c
blob69be1324b114ffc274cadd4e805b8e89c4ea1bd3
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/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>
34 #include <scsi/scsi_tcq.h>
35
36 #define DRV_NAME "stex"
37 #define ST_DRIVER_VERSION "3.1.0.1"
38 #define ST_VER_MAJOR 3
39 #define ST_VER_MINOR 1
40 #define ST_OEM 0
41 #define ST_BUILD_VER 1
42
43 enum {
44 /* MU register offset */
45 IMR0 = 0x10, /* MU_INBOUND_MESSAGE_REG0 */
46 IMR1 = 0x14, /* MU_INBOUND_MESSAGE_REG1 */
47 OMR0 = 0x18, /* MU_OUTBOUND_MESSAGE_REG0 */
48 OMR1 = 0x1c, /* MU_OUTBOUND_MESSAGE_REG1 */
49 IDBL = 0x20, /* MU_INBOUND_DOORBELL */
50 IIS = 0x24, /* MU_INBOUND_INTERRUPT_STATUS */
51 IIM = 0x28, /* MU_INBOUND_INTERRUPT_MASK */
52 ODBL = 0x2c, /* MU_OUTBOUND_DOORBELL */
53 OIS = 0x30, /* MU_OUTBOUND_INTERRUPT_STATUS */
54 OIM = 0x3c, /* MU_OUTBOUND_INTERRUPT_MASK */
55
56 /* MU register value */
57 MU_INBOUND_DOORBELL_HANDSHAKE = 1,
58 MU_INBOUND_DOORBELL_REQHEADCHANGED = 2,
59 MU_INBOUND_DOORBELL_STATUSTAILCHANGED = 4,
60 MU_INBOUND_DOORBELL_HMUSTOPPED = 8,
61 MU_INBOUND_DOORBELL_RESET = 16,
62
63 MU_OUTBOUND_DOORBELL_HANDSHAKE = 1,
64 MU_OUTBOUND_DOORBELL_REQUESTTAILCHANGED = 2,
65 MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED = 4,
66 MU_OUTBOUND_DOORBELL_BUSCHANGE = 8,
67 MU_OUTBOUND_DOORBELL_HASEVENT = 16,
68
69 /* MU status code */
70 MU_STATE_STARTING = 1,
71 MU_STATE_FMU_READY_FOR_HANDSHAKE = 2,
72 MU_STATE_SEND_HANDSHAKE_FRAME = 3,
73 MU_STATE_STARTED = 4,
74 MU_STATE_RESETTING = 5,
75
76 MU_MAX_DELAY = 120,
77 MU_HANDSHAKE_SIGNATURE = 0x55aaaa55,
78 MU_HANDSHAKE_SIGNATURE_HALF = 0x5a5a0000,
79 MU_HARD_RESET_WAIT = 30000,
80 HMU_PARTNER_TYPE = 2,
81
82 /* firmware returned values */
83 SRB_STATUS_SUCCESS = 0x01,
84 SRB_STATUS_ERROR = 0x04,
85 SRB_STATUS_BUSY = 0x05,
86 SRB_STATUS_INVALID_REQUEST = 0x06,
87 SRB_STATUS_SELECTION_TIMEOUT = 0x0A,
88 SRB_SEE_SENSE = 0x80,
89
90 /* task attribute */
91 TASK_ATTRIBUTE_SIMPLE = 0x0,
92 TASK_ATTRIBUTE_HEADOFQUEUE = 0x1,
93 TASK_ATTRIBUTE_ORDERED = 0x2,
94 TASK_ATTRIBUTE_ACA = 0x4,
95
96 /* request count, etc. */
97 MU_MAX_REQUEST = 32,
98
99 /* one message wasted, use MU_MAX_REQUEST+1
100 to handle MU_MAX_REQUEST messages */
101 MU_REQ_COUNT = (MU_MAX_REQUEST + 1),
102 MU_STATUS_COUNT = (MU_MAX_REQUEST + 1),
103
104 STEX_CDB_LENGTH = MAX_COMMAND_SIZE,
105 REQ_VARIABLE_LEN = 1024,
106 STATUS_VAR_LEN = 128,
107 ST_CAN_QUEUE = MU_MAX_REQUEST,
108 ST_CMD_PER_LUN = MU_MAX_REQUEST,
109 ST_MAX_SG = 32,
110
111 /* sg flags */
112 SG_CF_EOT = 0x80, /* end of table */
113 SG_CF_64B = 0x40, /* 64 bit item */
114 SG_CF_HOST = 0x20, /* sg in host memory */
115
116 ST_MAX_ARRAY_SUPPORTED = 16,
117 ST_MAX_TARGET_NUM = (ST_MAX_ARRAY_SUPPORTED+1),
118 ST_MAX_LUN_PER_TARGET = 16,
119
120 st_shasta = 0,
121 st_vsc = 1,
122 st_vsc1 = 2,
123 st_yosemite = 3,
124
125 PASSTHRU_REQ_TYPE = 0x00000001,
126 PASSTHRU_REQ_NO_WAKEUP = 0x00000100,
127 ST_INTERNAL_TIMEOUT = 30,
128
129 ST_TO_CMD = 0,
130 ST_FROM_CMD = 1,
131
132 /* vendor specific commands of Promise */
133 MGT_CMD = 0xd8,
134 SINBAND_MGT_CMD = 0xd9,
135 ARRAY_CMD = 0xe0,
136 CONTROLLER_CMD = 0xe1,
137 DEBUGGING_CMD = 0xe2,
138 PASSTHRU_CMD = 0xe3,
139
140 PASSTHRU_GET_ADAPTER = 0x05,
141 PASSTHRU_GET_DRVVER = 0x10,
142
143 CTLR_CONFIG_CMD = 0x03,
144 CTLR_SHUTDOWN = 0x0d,
145
146 CTLR_POWER_STATE_CHANGE = 0x0e,
147 CTLR_POWER_SAVING = 0x01,
148
149 PASSTHRU_SIGNATURE = 0x4e415041,
150 MGT_CMD_SIGNATURE = 0xba,
151
152 INQUIRY_EVPD = 0x01,
153
154 ST_ADDITIONAL_MEM = 0x200000,
155 };
156
157 /* SCSI inquiry data */
158 typedef struct st_inq {
159 u8 DeviceType :5;
160 u8 DeviceTypeQualifier :3;
161 u8 DeviceTypeModifier :7;
162 u8 RemovableMedia :1;
163 u8 Versions;
164 u8 ResponseDataFormat :4;
165 u8 HiSupport :1;
166 u8 NormACA :1;
167 u8 ReservedBit :1;
168 u8 AERC :1;
169 u8 AdditionalLength;
170 u8 Reserved[2];
171 u8 SoftReset :1;
172 u8 CommandQueue :1;
173 u8 Reserved2 :1;
174 u8 LinkedCommands :1;
175 u8 Synchronous :1;
176 u8 Wide16Bit :1;
177 u8 Wide32Bit :1;
178 u8 RelativeAddressing :1;
179 u8 VendorId[8];
180 u8 ProductId[16];
181 u8 ProductRevisionLevel[4];
182 u8 VendorSpecific[20];
183 u8 Reserved3[40];
184 } ST_INQ;
185
186 struct st_sgitem {
187 u8 ctrl; /* SG_CF_xxx */
188 u8 reserved[3];
189 __le32 count;
190 __le32 addr;
191 __le32 addr_hi;
192 };
193
194 struct st_sgtable {
195 __le16 sg_count;
196 __le16 max_sg_count;
197 __le32 sz_in_byte;
198 struct st_sgitem table[ST_MAX_SG];
199 };
200
201 struct handshake_frame {
202 __le32 rb_phy; /* request payload queue physical address */
203 __le32 rb_phy_hi;
204 __le16 req_sz; /* size of each request payload */
205 __le16 req_cnt; /* count of reqs the buffer can hold */
206 __le16 status_sz; /* size of each status payload */
207 __le16 status_cnt; /* count of status the buffer can hold */
208 __le32 hosttime; /* seconds from Jan 1, 1970 (GMT) */
209 __le32 hosttime_hi;
210 u8 partner_type; /* who sends this frame */
211 u8 reserved0[7];
212 __le32 partner_ver_major;
213 __le32 partner_ver_minor;
214 __le32 partner_ver_oem;
215 __le32 partner_ver_build;
216 __le32 extra_offset; /* NEW */
217 __le32 extra_size; /* NEW */
218 u32 reserved1[2];
219 };
220
221 struct req_msg {
222 __le16 tag;
223 u8 lun;
224 u8 target;
225 u8 task_attr;
226 u8 task_manage;
227 u8 prd_entry;
228 u8 payload_sz; /* payload size in 4-byte, not used */
229 u8 cdb[STEX_CDB_LENGTH];
230 u8 variable[REQ_VARIABLE_LEN];
231 };
232
233 struct status_msg {
234 __le16 tag;
235 u8 lun;
236 u8 target;
237 u8 srb_status;
238 u8 scsi_status;
239 u8 reserved;
240 u8 payload_sz; /* payload size in 4-byte */
241 u8 variable[STATUS_VAR_LEN];
242 };
243
244 struct ver_info {
245 u32 major;
246 u32 minor;
247 u32 oem;
248 u32 build;
249 u32 reserved[2];
250 };
251
252 struct st_frame {
253 u32 base[6];
254 u32 rom_addr;
255
256 struct ver_info drv_ver;
257 struct ver_info bios_ver;
258
259 u32 bus;
260 u32 slot;
261 u32 irq_level;
262 u32 irq_vec;
263 u32 id;
264 u32 subid;
265
266 u32 dimm_size;
267 u8 dimm_type;
268 u8 reserved[3];
269
270 u32 channel;
271 u32 reserved1;
272 };
273
274 struct st_drvver {
275 u32 major;
276 u32 minor;
277 u32 oem;
278 u32 build;
279 u32 signature[2];
280 u8 console_id;
281 u8 host_no;
282 u8 reserved0[2];
283 u32 reserved[3];
284 };
285
286 #define MU_REQ_BUFFER_SIZE (MU_REQ_COUNT * sizeof(struct req_msg))
287 #define MU_STATUS_BUFFER_SIZE (MU_STATUS_COUNT * sizeof(struct status_msg))
288 #define MU_BUFFER_SIZE (MU_REQ_BUFFER_SIZE + MU_STATUS_BUFFER_SIZE)
289 #define STEX_EXTRA_SIZE max(sizeof(struct st_frame), sizeof(ST_INQ))
290 #define STEX_BUFFER_SIZE (MU_BUFFER_SIZE + STEX_EXTRA_SIZE)
291
292 struct st_ccb {
293 struct req_msg *req;
294 struct scsi_cmnd *cmd;
295
296 void *sense_buffer;
297 unsigned int sense_bufflen;
298 int sg_count;
299
300 u32 req_type;
301 u8 srb_status;
302 u8 scsi_status;
303 };
304
305 struct st_hba {
306 void __iomem *mmio_base; /* iomapped PCI memory space */
307 void *dma_mem;
308 dma_addr_t dma_handle;
309 size_t dma_size;
310
311 struct Scsi_Host *host;
312 struct pci_dev *pdev;
313
314 u32 req_head;
315 u32 req_tail;
316 u32 status_head;
317 u32 status_tail;
318
319 struct status_msg *status_buffer;
320 void *copy_buffer; /* temp buffer for driver-handled commands */
321 struct st_ccb ccb[MU_MAX_REQUEST];
322 struct st_ccb *wait_ccb;
323 wait_queue_head_t waitq;
324
325 unsigned int mu_status;
326 int out_req_cnt;
327
328 unsigned int cardtype;
329 };
330
331 static const char console_inq_page[] =
332 {
333 0x03,0x00,0x03,0x03,0xFA,0x00,0x00,0x30,
334 0x50,0x72,0x6F,0x6D,0x69,0x73,0x65,0x20, /* "Promise " */
335 0x52,0x41,0x49,0x44,0x20,0x43,0x6F,0x6E, /* "RAID Con" */
336 0x73,0x6F,0x6C,0x65,0x20,0x20,0x20,0x20, /* "sole " */
337 0x31,0x2E,0x30,0x30,0x20,0x20,0x20,0x20, /* "1.00 " */
338 0x53,0x58,0x2F,0x52,0x53,0x41,0x46,0x2D, /* "SX/RSAF-" */
339 0x54,0x45,0x31,0x2E,0x30,0x30,0x20,0x20, /* "TE1.00 " */
340 0x0C,0x20,0x20,0x20,0x20,0x20,0x20,0x20
341 };
342
343 MODULE_AUTHOR("Ed Lin");
344 MODULE_DESCRIPTION("Promise Technology SuperTrak EX Controllers");
345 MODULE_LICENSE("GPL");
346 MODULE_VERSION(ST_DRIVER_VERSION);
347
348 static void stex_gettime(__le32 *time)
349 {
350 struct timeval tv;
351 do_gettimeofday(&tv);
352
353 *time = cpu_to_le32(tv.tv_sec & 0xffffffff);
354 *(time + 1) = cpu_to_le32((tv.tv_sec >> 16) >> 16);
355 }
356
357 static struct status_msg *stex_get_status(struct st_hba *hba)
358 {
359 struct status_msg *status =
360 hba->status_buffer + hba->status_tail;
361
362 ++hba->status_tail;
363 hba->status_tail %= MU_STATUS_COUNT;
364
365 return status;
366 }
367
368 static void stex_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq)
369 {
370 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
371
372 cmd->sense_buffer[0] = 0x70; /* fixed format, current */
373 cmd->sense_buffer[2] = sk;
374 cmd->sense_buffer[7] = 18 - 8; /* additional sense length */
375 cmd->sense_buffer[12] = asc;
376 cmd->sense_buffer[13] = ascq;
377 }
378
379 static void stex_invalid_field(struct scsi_cmnd *cmd,
380 void (*done)(struct scsi_cmnd *))
381 {
382 /* "Invalid field in cbd" */
383 stex_set_sense(cmd, ILLEGAL_REQUEST, 0x24, 0x0);
384 done(cmd);
385 }
386
387 static struct req_msg *stex_alloc_req(struct st_hba *hba)
388 {
389 struct req_msg *req = ((struct req_msg *)hba->dma_mem) +
390 hba->req_head;
391
392 ++hba->req_head;
393 hba->req_head %= MU_REQ_COUNT;
394
395 return req;
396 }
397
398 static int stex_map_sg(struct st_hba *hba,
399 struct req_msg *req, struct st_ccb *ccb)
400 {
401 struct pci_dev *pdev = hba->pdev;
402 struct scsi_cmnd *cmd;
403 dma_addr_t dma_handle;
404 struct scatterlist *src;
405 struct st_sgtable *dst;
406 int i;
407
408 cmd = ccb->cmd;
409 dst = (struct st_sgtable *)req->variable;
410 dst->max_sg_count = cpu_to_le16(ST_MAX_SG);
411 dst->sz_in_byte = cpu_to_le32(cmd->request_bufflen);
412
413 if (cmd->use_sg) {
414 int n_elem;
415
416 src = (struct scatterlist *) cmd->request_buffer;
417 n_elem = pci_map_sg(pdev, src,
418 cmd->use_sg, cmd->sc_data_direction);
419 if (n_elem <= 0)
420 return -EIO;
421
422 ccb->sg_count = n_elem;
423 dst->sg_count = cpu_to_le16((u16)n_elem);
424
425 for (i = 0; i < n_elem; i++, src++) {
426 dst->table[i].count = cpu_to_le32((u32)sg_dma_len(src));
427 dst->table[i].addr =
428 cpu_to_le32(sg_dma_address(src) & 0xffffffff);
429 dst->table[i].addr_hi =
430 cpu_to_le32((sg_dma_address(src) >> 16) >> 16);
431 dst->table[i].ctrl = SG_CF_64B | SG_CF_HOST;
432 }
433 dst->table[--i].ctrl |= SG_CF_EOT;
434 return 0;
435 }
436
437 dma_handle = pci_map_single(pdev, cmd->request_buffer,
438 cmd->request_bufflen, cmd->sc_data_direction);
439 cmd->SCp.dma_handle = dma_handle;
440
441 ccb->sg_count = 1;
442 dst->sg_count = cpu_to_le16(1);
443 dst->table[0].addr = cpu_to_le32(dma_handle & 0xffffffff);
444 dst->table[0].addr_hi = cpu_to_le32((dma_handle >> 16) >> 16);
445 dst->table[0].count = cpu_to_le32((u32)cmd->request_bufflen);
446 dst->table[0].ctrl = SG_CF_EOT | SG_CF_64B | SG_CF_HOST;
447
448 return 0;
449 }
450
451 static void stex_internal_copy(struct scsi_cmnd *cmd,
452 const void *src, size_t *count, int sg_count, int direction)
453 {
454 size_t lcount;
455 size_t len;
456 void *s, *d, *base = NULL;
457 if (*count > cmd->request_bufflen)
458 *count = cmd->request_bufflen;
459 lcount = *count;
460 while (lcount) {
461 len = lcount;
462 s = (void *)src;
463 if (cmd->use_sg) {
464 size_t offset = *count - lcount;
465 s += offset;
466 base = scsi_kmap_atomic_sg(cmd->request_buffer,
467 sg_count, &offset, &len);
468 if (base == NULL) {
469 *count -= lcount;
470 return;
471 }
472 d = base + offset;
473 } else
474 d = cmd->request_buffer;
475
476 if (direction == ST_TO_CMD)
477 memcpy(d, s, len);
478 else
479 memcpy(s, d, len);
480
481 lcount -= len;
482 if (cmd->use_sg)
483 scsi_kunmap_atomic_sg(base);
484 }
485 }
486
487 static int stex_direct_copy(struct scsi_cmnd *cmd,
488 const void *src, size_t count)
489 {
490 struct st_hba *hba = (struct st_hba *) &cmd->device->host->hostdata[0];
491 size_t cp_len = count;
492 int n_elem = 0;
493
494 if (cmd->use_sg) {
495 n_elem = pci_map_sg(hba->pdev, cmd->request_buffer,
496 cmd->use_sg, cmd->sc_data_direction);
497 if (n_elem <= 0)
498 return 0;
499 }
500
501 stex_internal_copy(cmd, src, &cp_len, n_elem, ST_TO_CMD);
502
503 if (cmd->use_sg)
504 pci_unmap_sg(hba->pdev, cmd->request_buffer,
505 cmd->use_sg, cmd->sc_data_direction);
506 return cp_len == count;
507 }
508
509 static void stex_controller_info(struct st_hba *hba, struct st_ccb *ccb)
510 {
511 struct st_frame *p;
512 size_t count = sizeof(struct st_frame);
513
514 p = hba->copy_buffer;
515 stex_internal_copy(ccb->cmd, p, &count, ccb->sg_count, ST_FROM_CMD);
516 memset(p->base, 0, sizeof(u32)*6);
517 *(unsigned long *)(p->base) = pci_resource_start(hba->pdev, 0);
518 p->rom_addr = 0;
519
520 p->drv_ver.major = ST_VER_MAJOR;
521 p->drv_ver.minor = ST_VER_MINOR;
522 p->drv_ver.oem = ST_OEM;
523 p->drv_ver.build = ST_BUILD_VER;
524
525 p->bus = hba->pdev->bus->number;
526 p->slot = hba->pdev->devfn;
527 p->irq_level = 0;
528 p->irq_vec = hba->pdev->irq;
529 p->id = hba->pdev->vendor << 16 | hba->pdev->device;
530 p->subid =
531 hba->pdev->subsystem_vendor << 16 | hba->pdev->subsystem_device;
532
533 stex_internal_copy(ccb->cmd, p, &count, ccb->sg_count, ST_TO_CMD);
534 }
535
536 static void
537 stex_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag)
538 {
539 req->tag = cpu_to_le16(tag);
540 req->task_attr = TASK_ATTRIBUTE_SIMPLE;
541 req->task_manage = 0; /* not supported yet */
542
543 hba->ccb[tag].req = req;
544 hba->out_req_cnt++;
545
546 writel(hba->req_head, hba->mmio_base + IMR0);
547 writel(MU_INBOUND_DOORBELL_REQHEADCHANGED, hba->mmio_base + IDBL);
548 readl(hba->mmio_base + IDBL); /* flush */
549 }
550
551 static int
552 stex_slave_alloc(struct scsi_device *sdev)
553 {
554 /* Cheat: usually extracted from Inquiry data */
555 sdev->tagged_supported = 1;
556
557 scsi_activate_tcq(sdev, sdev->host->can_queue);
558
559 return 0;
560 }
561
562 static int
563 stex_slave_config(struct scsi_device *sdev)
564 {
565 sdev->use_10_for_rw = 1;
566 sdev->use_10_for_ms = 1;
567 sdev->timeout = 60 * HZ;
568 sdev->tagged_supported = 1;
569
570 return 0;
571 }
572
573 static void
574 stex_slave_destroy(struct scsi_device *sdev)
575 {
576 scsi_deactivate_tcq(sdev, 1);
577 }
578
579 static int
580 stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
581 {
582 struct st_hba *hba;
583 struct Scsi_Host *host;
584 unsigned int id,lun;
585 struct req_msg *req;
586 u16 tag;
587 host = cmd->device->host;
588 id = cmd->device->id;
589 lun = cmd->device->channel; /* firmware lun issue work around */
590 hba = (struct st_hba *) &host->hostdata[0];
591
592 switch (cmd->cmnd[0]) {
593 case MODE_SENSE_10:
594 {
595 static char ms10_caching_page[12] =
596 { 0, 0x12, 0, 0, 0, 0, 0, 0, 0x8, 0xa, 0x4, 0 };
597 unsigned char page;
598 page = cmd->cmnd[2] & 0x3f;
599 if (page == 0x8 || page == 0x3f) {
600 stex_direct_copy(cmd, ms10_caching_page,
601 sizeof(ms10_caching_page));
602 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
603 done(cmd);
604 } else
605 stex_invalid_field(cmd, done);
606 return 0;
607 }
608 case INQUIRY:
609 if (id != ST_MAX_ARRAY_SUPPORTED)
610 break;
611 if (lun == 0 && (cmd->cmnd[1] & INQUIRY_EVPD) == 0) {
612 stex_direct_copy(cmd, console_inq_page,
613 sizeof(console_inq_page));
614 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
615 done(cmd);
616 } else
617 stex_invalid_field(cmd, done);
618 return 0;
619 case PASSTHRU_CMD:
620 if (cmd->cmnd[1] == PASSTHRU_GET_DRVVER) {
621 struct st_drvver ver;
622 ver.major = ST_VER_MAJOR;
623 ver.minor = ST_VER_MINOR;
624 ver.oem = ST_OEM;
625 ver.build = ST_BUILD_VER;
626 ver.signature[0] = PASSTHRU_SIGNATURE;
627 ver.console_id = ST_MAX_ARRAY_SUPPORTED;
628 ver.host_no = hba->host->host_no;
629 cmd->result = stex_direct_copy(cmd, &ver, sizeof(ver)) ?
630 DID_OK << 16 | COMMAND_COMPLETE << 8 :
631 DID_ERROR << 16 | COMMAND_COMPLETE << 8;
632 done(cmd);
633 return 0;
634 }
635 default:
636 break;
637 }
638
639 cmd->scsi_done = done;
640
641 tag = cmd->request->tag;
642
643 if (unlikely(tag >= host->can_queue))
644 return SCSI_MLQUEUE_HOST_BUSY;
645
646 req = stex_alloc_req(hba);
647
648 if (hba->cardtype == st_yosemite) {
649 req->lun = lun * (ST_MAX_TARGET_NUM - 1) + id;
650 req->target = 0;
651 } else {
652 req->lun = lun;
653 req->target = id;
654 }
655
656 /* cdb */
657 memcpy(req->cdb, cmd->cmnd, STEX_CDB_LENGTH);
658
659 hba->ccb[tag].cmd = cmd;
660 hba->ccb[tag].sense_bufflen = SCSI_SENSE_BUFFERSIZE;
661 hba->ccb[tag].sense_buffer = cmd->sense_buffer;
662 hba->ccb[tag].req_type = 0;
663
664 if (cmd->sc_data_direction != DMA_NONE)
665 stex_map_sg(hba, req, &hba->ccb[tag]);
666
667 stex_send_cmd(hba, req, tag);
668 return 0;
669 }
670
671 static void stex_unmap_sg(struct st_hba *hba, struct scsi_cmnd *cmd)
672 {
673 if (cmd->sc_data_direction != DMA_NONE) {
674 if (cmd->use_sg)
675 pci_unmap_sg(hba->pdev, cmd->request_buffer,
676 cmd->use_sg, cmd->sc_data_direction);
677 else
678 pci_unmap_single(hba->pdev, cmd->SCp.dma_handle,
679 cmd->request_bufflen, cmd->sc_data_direction);
680 }
681 }
682
683 static void stex_scsi_done(struct st_ccb *ccb)
684 {
685 struct scsi_cmnd *cmd = ccb->cmd;
686 int result;
687
688 if (ccb->srb_status == SRB_STATUS_SUCCESS || ccb->srb_status == 0) {
689 result = ccb->scsi_status;
690 switch (ccb->scsi_status) {
691 case SAM_STAT_GOOD:
692 result |= DID_OK << 16 | COMMAND_COMPLETE << 8;
693 break;
694 case SAM_STAT_CHECK_CONDITION:
695 result |= DRIVER_SENSE << 24;
696 break;
697 case SAM_STAT_BUSY:
698 result |= DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
699 break;
700 default:
701 result |= DID_ERROR << 16 | COMMAND_COMPLETE << 8;
702 break;
703 }
704 }
705 else if (ccb->srb_status & SRB_SEE_SENSE)
706 result = DRIVER_SENSE << 24 | SAM_STAT_CHECK_CONDITION;
707 else switch (ccb->srb_status) {
708 case SRB_STATUS_SELECTION_TIMEOUT:
709 result = DID_NO_CONNECT << 16 | COMMAND_COMPLETE << 8;
710 break;
711 case SRB_STATUS_BUSY:
712 result = DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
713 break;
714 case SRB_STATUS_INVALID_REQUEST:
715 case SRB_STATUS_ERROR:
716 default:
717 result = DID_ERROR << 16 | COMMAND_COMPLETE << 8;
718 break;
719 }
720
721 cmd->result = result;
722 cmd->scsi_done(cmd);
723 }
724
725 static void stex_copy_data(struct st_ccb *ccb,
726 struct status_msg *resp, unsigned int variable)
727 {
728 size_t count = variable;
729 if (resp->scsi_status != SAM_STAT_GOOD) {
730 if (ccb->sense_buffer != NULL)
731 memcpy(ccb->sense_buffer, resp->variable,
732 min(variable, ccb->sense_bufflen));
733 return;
734 }
735
736 if (ccb->cmd == NULL)
737 return;
738 stex_internal_copy(ccb->cmd,
739 resp->variable, &count, ccb->sg_count, ST_TO_CMD);
740 }
741
742 static void stex_ys_commands(struct st_hba *hba,
743 struct st_ccb *ccb, struct status_msg *resp)
744 {
745 size_t count;
746
747 if (ccb->cmd->cmnd[0] == MGT_CMD &&
748 resp->scsi_status != SAM_STAT_CHECK_CONDITION) {
749 ccb->cmd->request_bufflen =
750 le32_to_cpu(*(__le32 *)&resp->variable[0]);
751 return;
752 }
753
754 if (resp->srb_status != 0)
755 return;
756
757 /* determine inquiry command status by DeviceTypeQualifier */
758 if (ccb->cmd->cmnd[0] == INQUIRY &&
759 resp->scsi_status == SAM_STAT_GOOD) {
760 ST_INQ *inq_data;
761
762 count = STEX_EXTRA_SIZE;
763 stex_internal_copy(ccb->cmd, hba->copy_buffer,
764 &count, ccb->sg_count, ST_FROM_CMD);
765 inq_data = (ST_INQ *)hba->copy_buffer;
766 if (inq_data->DeviceTypeQualifier != 0)
767 ccb->srb_status = SRB_STATUS_SELECTION_TIMEOUT;
768 else
769 ccb->srb_status = SRB_STATUS_SUCCESS;
770 } else if (ccb->cmd->cmnd[0] == REPORT_LUNS) {
771 u8 *report_lun_data = (u8 *)hba->copy_buffer;
772
773 count = STEX_EXTRA_SIZE;
774 stex_internal_copy(ccb->cmd, report_lun_data,
775 &count, ccb->sg_count, ST_FROM_CMD);
776 if (report_lun_data[2] || report_lun_data[3]) {
777 report_lun_data[2] = 0x00;
778 report_lun_data[3] = 0x08;
779 stex_internal_copy(ccb->cmd, report_lun_data,
780 &count, ccb->sg_count, ST_TO_CMD);
781 }
782 }
783 }
784
785 static void stex_mu_intr(struct st_hba *hba, u32 doorbell)
786 {
787 void __iomem *base = hba->mmio_base;
788 struct status_msg *resp;
789 struct st_ccb *ccb;
790 unsigned int size;
791 u16 tag;
792
793 if (!(doorbell & MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED))
794 return;
795
796 /* status payloads */
797 hba->status_head = readl(base + OMR1);
798 if (unlikely(hba->status_head >= MU_STATUS_COUNT)) {
799 printk(KERN_WARNING DRV_NAME "(%s): invalid status head\n",
800 pci_name(hba->pdev));
801 return;
802 }
803
804 /*
805 * it's not a valid status payload if:
806 * 1. there are no pending requests(e.g. during init stage)
807 * 2. there are some pending requests, but the controller is in
808 * reset status, and its type is not st_yosemite
809 * firmware of st_yosemite in reset status will return pending requests
810 * to driver, so we allow it to pass
811 */
812 if (unlikely(hba->out_req_cnt <= 0 ||
813 (hba->mu_status == MU_STATE_RESETTING &&
814 hba->cardtype != st_yosemite))) {
815 hba->status_tail = hba->status_head;
816 goto update_status;
817 }
818
819 while (hba->status_tail != hba->status_head) {
820 resp = stex_get_status(hba);
821 tag = le16_to_cpu(resp->tag);
822 if (unlikely(tag >= hba->host->can_queue)) {
823 printk(KERN_WARNING DRV_NAME
824 "(%s): invalid tag\n", pci_name(hba->pdev));
825 continue;
826 }
827
828 ccb = &hba->ccb[tag];
829 if (hba->wait_ccb == ccb)
830 hba->wait_ccb = NULL;
831 if (unlikely(ccb->req == NULL)) {
832 printk(KERN_WARNING DRV_NAME
833 "(%s): lagging req\n", pci_name(hba->pdev));
834 hba->out_req_cnt--;
835 continue;
836 }
837
838 size = resp->payload_sz * sizeof(u32); /* payload size */
839 if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN ||
840 size > sizeof(*resp))) {
841 printk(KERN_WARNING DRV_NAME "(%s): bad status size\n",
842 pci_name(hba->pdev));
843 } else {
844 size -= sizeof(*resp) - STATUS_VAR_LEN; /* copy size */
845 if (size)
846 stex_copy_data(ccb, resp, size);
847 }
848
849 ccb->srb_status = resp->srb_status;
850 ccb->scsi_status = resp->scsi_status;
851
852 if (likely(ccb->cmd != NULL)) {
853 if (hba->cardtype == st_yosemite)
854 stex_ys_commands(hba, ccb, resp);
855
856 if (unlikely(ccb->cmd->cmnd[0] == PASSTHRU_CMD &&
857 ccb->cmd->cmnd[1] == PASSTHRU_GET_ADAPTER))
858 stex_controller_info(hba, ccb);
859
860 stex_unmap_sg(hba, ccb->cmd);
861 stex_scsi_done(ccb);
862 hba->out_req_cnt--;
863 } else if (ccb->req_type & PASSTHRU_REQ_TYPE) {
864 hba->out_req_cnt--;
865 if (ccb->req_type & PASSTHRU_REQ_NO_WAKEUP) {
866 ccb->req_type = 0;
867 continue;
868 }
869 ccb->req_type = 0;
870 if (waitqueue_active(&hba->waitq))
871 wake_up(&hba->waitq);
872 }
873 }
874
875 update_status:
876 writel(hba->status_head, base + IMR1);
877 readl(base + IMR1); /* flush */
878 }
879
880 static irqreturn_t stex_intr(int irq, void *__hba)
881 {
882 struct st_hba *hba = __hba;
883 void __iomem *base = hba->mmio_base;
884 u32 data;
885 unsigned long flags;
886 int handled = 0;
887
888 spin_lock_irqsave(hba->host->host_lock, flags);
889
890 data = readl(base + ODBL);
891
892 if (data && data != 0xffffffff) {
893 /* clear the interrupt */
894 writel(data, base + ODBL);
895 readl(base + ODBL); /* flush */
896 stex_mu_intr(hba, data);
897 handled = 1;
898 }
899
900 spin_unlock_irqrestore(hba->host->host_lock, flags);
901
902 return IRQ_RETVAL(handled);
903 }
904
905 static int stex_handshake(struct st_hba *hba)
906 {
907 void __iomem *base = hba->mmio_base;
908 struct handshake_frame *h;
909 dma_addr_t status_phys;
910 u32 data;
911 unsigned long before;
912
913 if (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
914 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
915 readl(base + IDBL);
916 before = jiffies;
917 while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
918 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
919 printk(KERN_ERR DRV_NAME
920 "(%s): no handshake signature\n",
921 pci_name(hba->pdev));
922 return -1;
923 }
924 rmb();
925 msleep(1);
926 }
927 }
928
929 udelay(10);
930
931 data = readl(base + OMR1);
932 if ((data & 0xffff0000) == MU_HANDSHAKE_SIGNATURE_HALF) {
933 data &= 0x0000ffff;
934 if (hba->host->can_queue > data)
935 hba->host->can_queue = data;
936 }
937
938 h = (struct handshake_frame *)(hba->dma_mem + MU_REQ_BUFFER_SIZE);
939 h->rb_phy = cpu_to_le32(hba->dma_handle);
940 h->rb_phy_hi = cpu_to_le32((hba->dma_handle >> 16) >> 16);
941 h->req_sz = cpu_to_le16(sizeof(struct req_msg));
942 h->req_cnt = cpu_to_le16(MU_REQ_COUNT);
943 h->status_sz = cpu_to_le16(sizeof(struct status_msg));
944 h->status_cnt = cpu_to_le16(MU_STATUS_COUNT);
945 stex_gettime(&h->hosttime);
946 h->partner_type = HMU_PARTNER_TYPE;
947 if (hba->dma_size > STEX_BUFFER_SIZE) {
948 h->extra_offset = cpu_to_le32(STEX_BUFFER_SIZE);
949 h->extra_size = cpu_to_le32(ST_ADDITIONAL_MEM);
950 } else
951 h->extra_offset = h->extra_size = 0;
952
953 status_phys = hba->dma_handle + MU_REQ_BUFFER_SIZE;
954 writel(status_phys, base + IMR0);
955 readl(base + IMR0);
956 writel((status_phys >> 16) >> 16, base + IMR1);
957 readl(base + IMR1);
958
959 writel((status_phys >> 16) >> 16, base + OMR0); /* old fw compatible */
960 readl(base + OMR0);
961 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
962 readl(base + IDBL); /* flush */
963
964 udelay(10);
965 before = jiffies;
966 while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
967 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
968 printk(KERN_ERR DRV_NAME
969 "(%s): no signature after handshake frame\n",
970 pci_name(hba->pdev));
971 return -1;
972 }
973 rmb();
974 msleep(1);
975 }
976
977 writel(0, base + IMR0);
978 readl(base + IMR0);
979 writel(0, base + OMR0);
980 readl(base + OMR0);
981 writel(0, base + IMR1);
982 readl(base + IMR1);
983 writel(0, base + OMR1);
984 readl(base + OMR1); /* flush */
985 hba->mu_status = MU_STATE_STARTED;
986 return 0;
987 }
988
989 static int stex_abort(struct scsi_cmnd *cmd)
990 {
991 struct Scsi_Host *host = cmd->device->host;
992 struct st_hba *hba = (struct st_hba *)host->hostdata;
993 u16 tag = cmd->request->tag;
994 void __iomem *base;
995 u32 data;
996 int result = SUCCESS;
997 unsigned long flags;
998 base = hba->mmio_base;
999 spin_lock_irqsave(host->host_lock, flags);
1000 if (tag < host->can_queue && hba->ccb[tag].cmd == cmd)
1001 hba->wait_ccb = &hba->ccb[tag];
1002 else {
1003 for (tag = 0; tag < host->can_queue; tag++)
1004 if (hba->ccb[tag].cmd == cmd) {
1005 hba->wait_ccb = &hba->ccb[tag];
1006 break;
1007 }
1008 if (tag >= host->can_queue)
1009 goto out;
1010 }
1011
1012 data = readl(base + ODBL);
1013 if (data == 0 || data == 0xffffffff)
1014 goto fail_out;
1015
1016 writel(data, base + ODBL);
1017 readl(base + ODBL); /* flush */
1018
1019 stex_mu_intr(hba, data);
1020
1021 if (hba->wait_ccb == NULL) {
1022 printk(KERN_WARNING DRV_NAME
1023 "(%s): lost interrupt\n", pci_name(hba->pdev));
1024 goto out;
1025 }
1026
1027 fail_out:
1028 stex_unmap_sg(hba, cmd);
1029 hba->wait_ccb->req = NULL; /* nullify the req's future return */
1030 hba->wait_ccb = NULL;
1031 result = FAILED;
1032 out:
1033 spin_unlock_irqrestore(host->host_lock, flags);
1034 return result;
1035 }
1036
1037 static void stex_hard_reset(struct st_hba *hba)
1038 {
1039 struct pci_bus *bus;
1040 int i;
1041 u16 pci_cmd;
1042 u8 pci_bctl;
1043
1044 for (i = 0; i < 16; i++)
1045 pci_read_config_dword(hba->pdev, i * 4,
1046 &hba->pdev->saved_config_space[i]);
1047
1048 /* Reset secondary bus. Our controller(MU/ATU) is the only device on
1049 secondary bus. Consult Intel 80331/3 developer's manual for detail */
1050 bus = hba->pdev->bus;
1051 pci_read_config_byte(bus->self, PCI_BRIDGE_CONTROL, &pci_bctl);
1052 pci_bctl |= PCI_BRIDGE_CTL_BUS_RESET;
1053 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
1054 msleep(1);
1055 pci_bctl &= ~PCI_BRIDGE_CTL_BUS_RESET;
1056 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
1057
1058 for (i = 0; i < MU_HARD_RESET_WAIT; i++) {
1059 pci_read_config_word(hba->pdev, PCI_COMMAND, &pci_cmd);
1060 if (pci_cmd != 0xffff && (pci_cmd & PCI_COMMAND_MASTER))
1061 break;
1062 msleep(1);
1063 }
1064
1065 ssleep(5);
1066 for (i = 0; i < 16; i++)
1067 pci_write_config_dword(hba->pdev, i * 4,
1068 hba->pdev->saved_config_space[i]);
1069 }
1070
1071 static int stex_reset(struct scsi_cmnd *cmd)
1072 {
1073 struct st_hba *hba;
1074 unsigned long flags;
1075 unsigned long before;
1076 hba = (struct st_hba *) &cmd->device->host->hostdata[0];
1077
1078 hba->mu_status = MU_STATE_RESETTING;
1079
1080 if (hba->cardtype == st_shasta)
1081 stex_hard_reset(hba);
1082
1083 if (hba->cardtype != st_yosemite) {
1084 if (stex_handshake(hba)) {
1085 printk(KERN_WARNING DRV_NAME
1086 "(%s): resetting: handshake failed\n",
1087 pci_name(hba->pdev));
1088 return FAILED;
1089 }
1090 spin_lock_irqsave(hba->host->host_lock, flags);
1091 hba->req_head = 0;
1092 hba->req_tail = 0;
1093 hba->status_head = 0;
1094 hba->status_tail = 0;
1095 hba->out_req_cnt = 0;
1096 spin_unlock_irqrestore(hba->host->host_lock, flags);
1097 return SUCCESS;
1098 }
1099
1100 /* st_yosemite */
1101 writel(MU_INBOUND_DOORBELL_RESET, hba->mmio_base + IDBL);
1102 readl(hba->mmio_base + IDBL); /* flush */
1103 before = jiffies;
1104 while (hba->out_req_cnt > 0) {
1105 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) {
1106 printk(KERN_WARNING DRV_NAME
1107 "(%s): reset timeout\n", pci_name(hba->pdev));
1108 return FAILED;
1109 }
1110 msleep(1);
1111 }
1112
1113 hba->mu_status = MU_STATE_STARTED;
1114 return SUCCESS;
1115 }
1116
1117 static int stex_biosparam(struct scsi_device *sdev,
1118 struct block_device *bdev, sector_t capacity, int geom[])
1119 {
1120 int heads = 255, sectors = 63;
1121
1122 if (capacity < 0x200000) {
1123 heads = 64;
1124 sectors = 32;
1125 }
1126
1127 sector_div(capacity, heads * sectors);
1128
1129 geom[0] = heads;
1130 geom[1] = sectors;
1131 geom[2] = capacity;
1132
1133 return 0;
1134 }
1135
1136 static struct scsi_host_template driver_template = {
1137 .module = THIS_MODULE,
1138 .name = DRV_NAME,
1139 .proc_name = DRV_NAME,
1140 .bios_param = stex_biosparam,
1141 .queuecommand = stex_queuecommand,
1142 .slave_alloc = stex_slave_alloc,
1143 .slave_configure = stex_slave_config,
1144 .slave_destroy = stex_slave_destroy,
1145 .eh_abort_handler = stex_abort,
1146 .eh_host_reset_handler = stex_reset,
1147 .can_queue = ST_CAN_QUEUE,
1148 .this_id = -1,
1149 .sg_tablesize = ST_MAX_SG,
1150 .cmd_per_lun = ST_CMD_PER_LUN,
1151 };
1152
1153 static int stex_set_dma_mask(struct pci_dev * pdev)
1154 {
1155 int ret;
1156 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)
1157 && !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))
1158 return 0;
1159 ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1160 if (!ret)
1161 ret = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1162 return ret;
1163 }
1164
1165 static int __devinit
1166 stex_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1167 {
1168 struct st_hba *hba;
1169 struct Scsi_Host *host;
1170 int err;
1171
1172 err = pci_enable_device(pdev);
1173 if (err)
1174 return err;
1175
1176 pci_set_master(pdev);
1177
1178 host = scsi_host_alloc(&driver_template, sizeof(struct st_hba));
1179
1180 if (!host) {
1181 printk(KERN_ERR DRV_NAME "(%s): scsi_host_alloc failed\n",
1182 pci_name(pdev));
1183 err = -ENOMEM;
1184 goto out_disable;
1185 }
1186
1187 hba = (struct st_hba *)host->hostdata;
1188 memset(hba, 0, sizeof(struct st_hba));
1189
1190 err = pci_request_regions(pdev, DRV_NAME);
1191 if (err < 0) {
1192 printk(KERN_ERR DRV_NAME "(%s): request regions failed\n",
1193 pci_name(pdev));
1194 goto out_scsi_host_put;
1195 }
1196
1197 hba->mmio_base = ioremap(pci_resource_start(pdev, 0),
1198 pci_resource_len(pdev, 0));
1199 if ( !hba->mmio_base) {
1200 printk(KERN_ERR DRV_NAME "(%s): memory map failed\n",
1201 pci_name(pdev));
1202 err = -ENOMEM;
1203 goto out_release_regions;
1204 }
1205
1206 err = stex_set_dma_mask(pdev);
1207 if (err) {
1208 printk(KERN_ERR DRV_NAME "(%s): set dma mask failed\n",
1209 pci_name(pdev));
1210 goto out_iounmap;
1211 }
1212
1213 hba->cardtype = (unsigned int) id->driver_data;
1214 if (hba->cardtype == st_vsc && (pdev->subsystem_device & 0xf) == 0x1)
1215 hba->cardtype = st_vsc1;
1216 hba->dma_size = (hba->cardtype == st_vsc1) ?
1217 (STEX_BUFFER_SIZE + ST_ADDITIONAL_MEM) : (STEX_BUFFER_SIZE);
1218 hba->dma_mem = dma_alloc_coherent(&pdev->dev,
1219 hba->dma_size, &hba->dma_handle, GFP_KERNEL);
1220 if (!hba->dma_mem) {
1221 err = -ENOMEM;
1222 printk(KERN_ERR DRV_NAME "(%s): dma mem alloc failed\n",
1223 pci_name(pdev));
1224 goto out_iounmap;
1225 }
1226
1227 hba->status_buffer =
1228 (struct status_msg *)(hba->dma_mem + MU_REQ_BUFFER_SIZE);
1229 hba->copy_buffer = hba->dma_mem + MU_BUFFER_SIZE;
1230 hba->mu_status = MU_STATE_STARTING;
1231
1232 /* firmware uses id/lun pair for a logical drive, but lun would be
1233 always 0 if CONFIG_SCSI_MULTI_LUN not configured, so we use
1234 channel to map lun here */
1235 host->max_channel = ST_MAX_LUN_PER_TARGET - 1;
1236 host->max_id = ST_MAX_TARGET_NUM;
1237 host->max_lun = 1;
1238 host->unique_id = host->host_no;
1239 host->max_cmd_len = STEX_CDB_LENGTH;
1240
1241 hba->host = host;
1242 hba->pdev = pdev;
1243 init_waitqueue_head(&hba->waitq);
1244
1245 err = request_irq(pdev->irq, stex_intr, IRQF_SHARED, DRV_NAME, hba);
1246 if (err) {
1247 printk(KERN_ERR DRV_NAME "(%s): request irq failed\n",
1248 pci_name(pdev));
1249 goto out_pci_free;
1250 }
1251
1252 err = stex_handshake(hba);
1253 if (err)
1254 goto out_free_irq;
1255
1256 err = scsi_init_shared_tag_map(host, host->can_queue);
1257 if (err) {
1258 printk(KERN_ERR DRV_NAME "(%s): init shared queue failed\n",
1259 pci_name(pdev));
1260 goto out_free_irq;
1261 }
1262
1263 pci_set_drvdata(pdev, hba);
1264
1265 err = scsi_add_host(host, &pdev->dev);
1266 if (err) {
1267 printk(KERN_ERR DRV_NAME "(%s): scsi_add_host failed\n",
1268 pci_name(pdev));
1269 goto out_free_irq;
1270 }
1271
1272 scsi_scan_host(host);
1273
1274 return 0;
1275
1276 out_free_irq:
1277 free_irq(pdev->irq, hba);
1278 out_pci_free:
1279 dma_free_coherent(&pdev->dev, hba->dma_size,
1280 hba->dma_mem, hba->dma_handle);
1281 out_iounmap:
1282 iounmap(hba->mmio_base);
1283 out_release_regions:
1284 pci_release_regions(pdev);
1285 out_scsi_host_put:
1286 scsi_host_put(host);
1287 out_disable:
1288 pci_disable_device(pdev);
1289
1290 return err;
1291 }
1292
1293 static void stex_hba_stop(struct st_hba *hba)
1294 {
1295 struct req_msg *req;
1296 unsigned long flags;
1297 unsigned long before;
1298 u16 tag = 0;
1299
1300 spin_lock_irqsave(hba->host->host_lock, flags);
1301 req = stex_alloc_req(hba);
1302 memset(req->cdb, 0, STEX_CDB_LENGTH);
1303
1304 if (hba->cardtype == st_yosemite) {
1305 req->cdb[0] = MGT_CMD;
1306 req->cdb[1] = MGT_CMD_SIGNATURE;
1307 req->cdb[2] = CTLR_CONFIG_CMD;
1308 req->cdb[3] = CTLR_SHUTDOWN;
1309 } else {
1310 req->cdb[0] = CONTROLLER_CMD;
1311 req->cdb[1] = CTLR_POWER_STATE_CHANGE;
1312 req->cdb[2] = CTLR_POWER_SAVING;
1313 }
1314
1315 hba->ccb[tag].cmd = NULL;
1316 hba->ccb[tag].sg_count = 0;
1317 hba->ccb[tag].sense_bufflen = 0;
1318 hba->ccb[tag].sense_buffer = NULL;
1319 hba->ccb[tag].req_type |= PASSTHRU_REQ_TYPE;
1320
1321 stex_send_cmd(hba, req, tag);
1322 spin_unlock_irqrestore(hba->host->host_lock, flags);
1323
1324 before = jiffies;
1325 while (hba->ccb[tag].req_type & PASSTHRU_REQ_TYPE) {
1326 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ))
1327 return;
1328 msleep(10);
1329 }
1330 }
1331
1332 static void stex_hba_free(struct st_hba *hba)
1333 {
1334 free_irq(hba->pdev->irq, hba);
1335
1336 iounmap(hba->mmio_base);
1337
1338 pci_release_regions(hba->pdev);
1339
1340 dma_free_coherent(&hba->pdev->dev, hba->dma_size,
1341 hba->dma_mem, hba->dma_handle);
1342 }
1343
1344 static void stex_remove(struct pci_dev *pdev)
1345 {
1346 struct st_hba *hba = pci_get_drvdata(pdev);
1347
1348 scsi_remove_host(hba->host);
1349
1350 pci_set_drvdata(pdev, NULL);
1351
1352 stex_hba_stop(hba);
1353
1354 stex_hba_free(hba);
1355
1356 scsi_host_put(hba->host);
1357
1358 pci_disable_device(pdev);
1359 }
1360
1361 static void stex_shutdown(struct pci_dev *pdev)
1362 {
1363 struct st_hba *hba = pci_get_drvdata(pdev);
1364
1365 stex_hba_stop(hba);
1366 }
1367
1368 static struct pci_device_id stex_pci_tbl[] = {
1369 /* st_shasta */
1370 { 0x105a, 0x8350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1371 st_shasta }, /* SuperTrak EX8350/8300/16350/16300 */
1372 { 0x105a, 0xc350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1373 st_shasta }, /* SuperTrak EX12350 */
1374 { 0x105a, 0x4302, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1375 st_shasta }, /* SuperTrak EX4350 */
1376 { 0x105a, 0xe350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1377 st_shasta }, /* SuperTrak EX24350 */
1378
1379 /* st_vsc */
1380 { 0x105a, 0x7250, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_vsc },
1381
1382 /* st_yosemite */
1383 { 0x105a, 0x8650, PCI_ANY_ID, 0x4600, 0, 0,
1384 st_yosemite }, /* SuperTrak EX4650 */
1385 { 0x105a, 0x8650, PCI_ANY_ID, 0x4610, 0, 0,
1386 st_yosemite }, /* SuperTrak EX4650o */
1387 { 0x105a, 0x8650, PCI_ANY_ID, 0x8600, 0, 0,
1388 st_yosemite }, /* SuperTrak EX8650EL */
1389 { 0x105a, 0x8650, PCI_ANY_ID, 0x8601, 0, 0,
1390 st_yosemite }, /* SuperTrak EX8650 */
1391 { 0x105a, 0x8650, PCI_ANY_ID, 0x8602, 0, 0,
1392 st_yosemite }, /* SuperTrak EX8654 */
1393 { 0x105a, 0x8650, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1394 st_yosemite }, /* generic st_yosemite */
1395 { } /* terminate list */
1396 };
1397 MODULE_DEVICE_TABLE(pci, stex_pci_tbl);
1398
1399 static struct pci_driver stex_pci_driver = {
1400 .name = DRV_NAME,
1401 .id_table = stex_pci_tbl,
1402 .probe = stex_probe,
1403 .remove = __devexit_p(stex_remove),
1404 .shutdown = stex_shutdown,
1405 };
1406
1407 static int __init stex_init(void)
1408 {
1409 printk(KERN_INFO DRV_NAME
1410 ": Promise SuperTrak EX Driver version: %s\n",
1411 ST_DRIVER_VERSION);
1412
1413 return pci_register_driver(&stex_pci_driver);
1414 }
1415
1416 static void __exit stex_exit(void)
1417 {
1418 pci_unregister_driver(&stex_pci_driver);
1419 }
1420
1421 module_init(stex_init);
1422 module_exit(stex_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree