?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
ALSA: dice: fix kernel NULL pointer dereference due to invalid calculation for array...
[linux/fpc-iii.git] / drivers / scsi / stex.c
blob9b20643ab49de59fee1ee2d90e9a433d3fb1a4f7
1 /*
2 * SuperTrak EX Series Storage Controller driver for Linux
3 *
4 * Copyright (C) 2005-2015 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/slab.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 <linux/ktime.h>
29 #include <linux/reboot.h>
30 #include <asm/io.h>
31 #include <asm/irq.h>
32 #include <asm/byteorder.h>
33 #include <scsi/scsi.h>
34 #include <scsi/scsi_device.h>
35 #include <scsi/scsi_cmnd.h>
36 #include <scsi/scsi_host.h>
37 #include <scsi/scsi_tcq.h>
38 #include <scsi/scsi_dbg.h>
39 #include <scsi/scsi_eh.h>
40
41 #define DRV_NAME "stex"
42 #define ST_DRIVER_VERSION "6.02.0000.01"
43 #define ST_VER_MAJOR 6
44 #define ST_VER_MINOR 02
45 #define ST_OEM 0000
46 #define ST_BUILD_VER 01
47
48 enum {
49 /* MU register offset */
50 IMR0 = 0x10, /* MU_INBOUND_MESSAGE_REG0 */
51 IMR1 = 0x14, /* MU_INBOUND_MESSAGE_REG1 */
52 OMR0 = 0x18, /* MU_OUTBOUND_MESSAGE_REG0 */
53 OMR1 = 0x1c, /* MU_OUTBOUND_MESSAGE_REG1 */
54 IDBL = 0x20, /* MU_INBOUND_DOORBELL */
55 IIS = 0x24, /* MU_INBOUND_INTERRUPT_STATUS */
56 IIM = 0x28, /* MU_INBOUND_INTERRUPT_MASK */
57 ODBL = 0x2c, /* MU_OUTBOUND_DOORBELL */
58 OIS = 0x30, /* MU_OUTBOUND_INTERRUPT_STATUS */
59 OIM = 0x3c, /* MU_OUTBOUND_INTERRUPT_MASK */
60
61 YIOA_STATUS = 0x00,
62 YH2I_INT = 0x20,
63 YINT_EN = 0x34,
64 YI2H_INT = 0x9c,
65 YI2H_INT_C = 0xa0,
66 YH2I_REQ = 0xc0,
67 YH2I_REQ_HI = 0xc4,
68 PSCRATCH0 = 0xb0,
69 PSCRATCH1 = 0xb4,
70 PSCRATCH2 = 0xb8,
71 PSCRATCH3 = 0xbc,
72 PSCRATCH4 = 0xc8,
73 MAILBOX_BASE = 0x1000,
74 MAILBOX_HNDSHK_STS = 0x0,
75
76 /* MU register value */
77 MU_INBOUND_DOORBELL_HANDSHAKE = (1 << 0),
78 MU_INBOUND_DOORBELL_REQHEADCHANGED = (1 << 1),
79 MU_INBOUND_DOORBELL_STATUSTAILCHANGED = (1 << 2),
80 MU_INBOUND_DOORBELL_HMUSTOPPED = (1 << 3),
81 MU_INBOUND_DOORBELL_RESET = (1 << 4),
82
83 MU_OUTBOUND_DOORBELL_HANDSHAKE = (1 << 0),
84 MU_OUTBOUND_DOORBELL_REQUESTTAILCHANGED = (1 << 1),
85 MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED = (1 << 2),
86 MU_OUTBOUND_DOORBELL_BUSCHANGE = (1 << 3),
87 MU_OUTBOUND_DOORBELL_HASEVENT = (1 << 4),
88 MU_OUTBOUND_DOORBELL_REQUEST_RESET = (1 << 27),
89
90 /* MU status code */
91 MU_STATE_STARTING = 1,
92 MU_STATE_STARTED = 2,
93 MU_STATE_RESETTING = 3,
94 MU_STATE_FAILED = 4,
95 MU_STATE_STOP = 5,
96 MU_STATE_NOCONNECT = 6,
97
98 MU_MAX_DELAY = 50,
99 MU_HANDSHAKE_SIGNATURE = 0x55aaaa55,
100 MU_HANDSHAKE_SIGNATURE_HALF = 0x5a5a0000,
101 MU_HARD_RESET_WAIT = 30000,
102 HMU_PARTNER_TYPE = 2,
103
104 /* firmware returned values */
105 SRB_STATUS_SUCCESS = 0x01,
106 SRB_STATUS_ERROR = 0x04,
107 SRB_STATUS_BUSY = 0x05,
108 SRB_STATUS_INVALID_REQUEST = 0x06,
109 SRB_STATUS_SELECTION_TIMEOUT = 0x0A,
110 SRB_SEE_SENSE = 0x80,
111
112 /* task attribute */
113 TASK_ATTRIBUTE_SIMPLE = 0x0,
114 TASK_ATTRIBUTE_HEADOFQUEUE = 0x1,
115 TASK_ATTRIBUTE_ORDERED = 0x2,
116 TASK_ATTRIBUTE_ACA = 0x4,
117
118 SS_STS_NORMAL = 0x80000000,
119 SS_STS_DONE = 0x40000000,
120 SS_STS_HANDSHAKE = 0x20000000,
121
122 SS_HEAD_HANDSHAKE = 0x80,
123
124 SS_H2I_INT_RESET = 0x100,
125
126 SS_I2H_REQUEST_RESET = 0x2000,
127
128 SS_MU_OPERATIONAL = 0x80000000,
129
130 STEX_CDB_LENGTH = 16,
131 STATUS_VAR_LEN = 128,
132
133 /* sg flags */
134 SG_CF_EOT = 0x80, /* end of table */
135 SG_CF_64B = 0x40, /* 64 bit item */
136 SG_CF_HOST = 0x20, /* sg in host memory */
137 MSG_DATA_DIR_ND = 0,
138 MSG_DATA_DIR_IN = 1,
139 MSG_DATA_DIR_OUT = 2,
140
141 st_shasta = 0,
142 st_vsc = 1,
143 st_yosemite = 2,
144 st_seq = 3,
145 st_yel = 4,
146 st_P3 = 5,
147
148 PASSTHRU_REQ_TYPE = 0x00000001,
149 PASSTHRU_REQ_NO_WAKEUP = 0x00000100,
150 ST_INTERNAL_TIMEOUT = 180,
151
152 ST_TO_CMD = 0,
153 ST_FROM_CMD = 1,
154
155 /* vendor specific commands of Promise */
156 MGT_CMD = 0xd8,
157 SINBAND_MGT_CMD = 0xd9,
158 ARRAY_CMD = 0xe0,
159 CONTROLLER_CMD = 0xe1,
160 DEBUGGING_CMD = 0xe2,
161 PASSTHRU_CMD = 0xe3,
162
163 PASSTHRU_GET_ADAPTER = 0x05,
164 PASSTHRU_GET_DRVVER = 0x10,
165
166 CTLR_CONFIG_CMD = 0x03,
167 CTLR_SHUTDOWN = 0x0d,
168
169 CTLR_POWER_STATE_CHANGE = 0x0e,
170 CTLR_POWER_SAVING = 0x01,
171
172 PASSTHRU_SIGNATURE = 0x4e415041,
173 MGT_CMD_SIGNATURE = 0xba,
174
175 INQUIRY_EVPD = 0x01,
176
177 ST_ADDITIONAL_MEM = 0x200000,
178 ST_ADDITIONAL_MEM_MIN = 0x80000,
179 PMIC_SHUTDOWN = 0x0D,
180 PMIC_REUMSE = 0x10,
181 ST_IGNORED = -1,
182 ST_NOTHANDLED = 7,
183 ST_S3 = 3,
184 ST_S4 = 4,
185 ST_S5 = 5,
186 ST_S6 = 6,
187 };
188
189 struct st_sgitem {
190 u8 ctrl; /* SG_CF_xxx */
191 u8 reserved[3];
192 __le32 count;
193 __le64 addr;
194 };
195
196 struct st_ss_sgitem {
197 __le32 addr;
198 __le32 addr_hi;
199 __le32 count;
200 };
201
202 struct st_sgtable {
203 __le16 sg_count;
204 __le16 max_sg_count;
205 __le32 sz_in_byte;
206 };
207
208 struct st_msg_header {
209 __le64 handle;
210 u8 flag;
211 u8 channel;
212 __le16 timeout;
213 u32 reserved;
214 };
215
216 struct handshake_frame {
217 __le64 rb_phy; /* request payload queue physical address */
218 __le16 req_sz; /* size of each request payload */
219 __le16 req_cnt; /* count of reqs the buffer can hold */
220 __le16 status_sz; /* size of each status payload */
221 __le16 status_cnt; /* count of status the buffer can hold */
222 __le64 hosttime; /* seconds from Jan 1, 1970 (GMT) */
223 u8 partner_type; /* who sends this frame */
224 u8 reserved0[7];
225 __le32 partner_ver_major;
226 __le32 partner_ver_minor;
227 __le32 partner_ver_oem;
228 __le32 partner_ver_build;
229 __le32 extra_offset; /* NEW */
230 __le32 extra_size; /* NEW */
231 __le32 scratch_size;
232 u32 reserved1;
233 };
234
235 struct req_msg {
236 __le16 tag;
237 u8 lun;
238 u8 target;
239 u8 task_attr;
240 u8 task_manage;
241 u8 data_dir;
242 u8 payload_sz; /* payload size in 4-byte, not used */
243 u8 cdb[STEX_CDB_LENGTH];
244 u32 variable[0];
245 };
246
247 struct status_msg {
248 __le16 tag;
249 u8 lun;
250 u8 target;
251 u8 srb_status;
252 u8 scsi_status;
253 u8 reserved;
254 u8 payload_sz; /* payload size in 4-byte */
255 u8 variable[STATUS_VAR_LEN];
256 };
257
258 struct ver_info {
259 u32 major;
260 u32 minor;
261 u32 oem;
262 u32 build;
263 u32 reserved[2];
264 };
265
266 struct st_frame {
267 u32 base[6];
268 u32 rom_addr;
269
270 struct ver_info drv_ver;
271 struct ver_info bios_ver;
272
273 u32 bus;
274 u32 slot;
275 u32 irq_level;
276 u32 irq_vec;
277 u32 id;
278 u32 subid;
279
280 u32 dimm_size;
281 u8 dimm_type;
282 u8 reserved[3];
283
284 u32 channel;
285 u32 reserved1;
286 };
287
288 struct st_drvver {
289 u32 major;
290 u32 minor;
291 u32 oem;
292 u32 build;
293 u32 signature[2];
294 u8 console_id;
295 u8 host_no;
296 u8 reserved0[2];
297 u32 reserved[3];
298 };
299
300 struct st_ccb {
301 struct req_msg *req;
302 struct scsi_cmnd *cmd;
303
304 void *sense_buffer;
305 unsigned int sense_bufflen;
306 int sg_count;
307
308 u32 req_type;
309 u8 srb_status;
310 u8 scsi_status;
311 u8 reserved[2];
312 };
313
314 struct st_hba {
315 void __iomem *mmio_base; /* iomapped PCI memory space */
316 void *dma_mem;
317 dma_addr_t dma_handle;
318 size_t dma_size;
319
320 struct Scsi_Host *host;
321 struct pci_dev *pdev;
322
323 struct req_msg * (*alloc_rq) (struct st_hba *);
324 int (*map_sg)(struct st_hba *, struct req_msg *, struct st_ccb *);
325 void (*send) (struct st_hba *, struct req_msg *, u16);
326
327 u32 req_head;
328 u32 req_tail;
329 u32 status_head;
330 u32 status_tail;
331
332 struct status_msg *status_buffer;
333 void *copy_buffer; /* temp buffer for driver-handled commands */
334 struct st_ccb *ccb;
335 struct st_ccb *wait_ccb;
336 __le32 *scratch;
337
338 char work_q_name[20];
339 struct workqueue_struct *work_q;
340 struct work_struct reset_work;
341 wait_queue_head_t reset_waitq;
342 unsigned int mu_status;
343 unsigned int cardtype;
344 int msi_enabled;
345 int out_req_cnt;
346 u32 extra_offset;
347 u16 rq_count;
348 u16 rq_size;
349 u16 sts_count;
350 u8 supports_pm;
351 int msi_lock;
352 };
353
354 struct st_card_info {
355 struct req_msg * (*alloc_rq) (struct st_hba *);
356 int (*map_sg)(struct st_hba *, struct req_msg *, struct st_ccb *);
357 void (*send) (struct st_hba *, struct req_msg *, u16);
358 unsigned int max_id;
359 unsigned int max_lun;
360 unsigned int max_channel;
361 u16 rq_count;
362 u16 rq_size;
363 u16 sts_count;
364 };
365
366 static int S6flag;
367 static int stex_halt(struct notifier_block *nb, ulong event, void *buf);
368 static struct notifier_block stex_notifier = {
369 stex_halt, NULL, 0
370 };
371
372 static int msi;
373 module_param(msi, int, 0);
374 MODULE_PARM_DESC(msi, "Enable Message Signaled Interrupts(0=off, 1=on)");
375
376 static const char console_inq_page[] =
377 {
378 0x03,0x00,0x03,0x03,0xFA,0x00,0x00,0x30,
379 0x50,0x72,0x6F,0x6D,0x69,0x73,0x65,0x20, /* "Promise " */
380 0x52,0x41,0x49,0x44,0x20,0x43,0x6F,0x6E, /* "RAID Con" */
381 0x73,0x6F,0x6C,0x65,0x20,0x20,0x20,0x20, /* "sole " */
382 0x31,0x2E,0x30,0x30,0x20,0x20,0x20,0x20, /* "1.00 " */
383 0x53,0x58,0x2F,0x52,0x53,0x41,0x46,0x2D, /* "SX/RSAF-" */
384 0x54,0x45,0x31,0x2E,0x30,0x30,0x20,0x20, /* "TE1.00 " */
385 0x0C,0x20,0x20,0x20,0x20,0x20,0x20,0x20
386 };
387
388 MODULE_AUTHOR("Ed Lin");
389 MODULE_DESCRIPTION("Promise Technology SuperTrak EX Controllers");
390 MODULE_LICENSE("GPL");
391 MODULE_VERSION(ST_DRIVER_VERSION);
392
393 static struct status_msg *stex_get_status(struct st_hba *hba)
394 {
395 struct status_msg *status = hba->status_buffer + hba->status_tail;
396
397 ++hba->status_tail;
398 hba->status_tail %= hba->sts_count+1;
399
400 return status;
401 }
402
403 static void stex_invalid_field(struct scsi_cmnd *cmd,
404 void (*done)(struct scsi_cmnd *))
405 {
406 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
407
408 /* "Invalid field in cdb" */
409 scsi_build_sense_buffer(0, cmd->sense_buffer, ILLEGAL_REQUEST, 0x24,
410 0x0);
411 done(cmd);
412 }
413
414 static struct req_msg *stex_alloc_req(struct st_hba *hba)
415 {
416 struct req_msg *req = hba->dma_mem + hba->req_head * hba->rq_size;
417
418 ++hba->req_head;
419 hba->req_head %= hba->rq_count+1;
420
421 return req;
422 }
423
424 static struct req_msg *stex_ss_alloc_req(struct st_hba *hba)
425 {
426 return (struct req_msg *)(hba->dma_mem +
427 hba->req_head * hba->rq_size + sizeof(struct st_msg_header));
428 }
429
430 static int stex_map_sg(struct st_hba *hba,
431 struct req_msg *req, struct st_ccb *ccb)
432 {
433 struct scsi_cmnd *cmd;
434 struct scatterlist *sg;
435 struct st_sgtable *dst;
436 struct st_sgitem *table;
437 int i, nseg;
438
439 cmd = ccb->cmd;
440 nseg = scsi_dma_map(cmd);
441 BUG_ON(nseg < 0);
442 if (nseg) {
443 dst = (struct st_sgtable *)req->variable;
444
445 ccb->sg_count = nseg;
446 dst->sg_count = cpu_to_le16((u16)nseg);
447 dst->max_sg_count = cpu_to_le16(hba->host->sg_tablesize);
448 dst->sz_in_byte = cpu_to_le32(scsi_bufflen(cmd));
449
450 table = (struct st_sgitem *)(dst + 1);
451 scsi_for_each_sg(cmd, sg, nseg, i) {
452 table[i].count = cpu_to_le32((u32)sg_dma_len(sg));
453 table[i].addr = cpu_to_le64(sg_dma_address(sg));
454 table[i].ctrl = SG_CF_64B | SG_CF_HOST;
455 }
456 table[--i].ctrl |= SG_CF_EOT;
457 }
458
459 return nseg;
460 }
461
462 static int stex_ss_map_sg(struct st_hba *hba,
463 struct req_msg *req, struct st_ccb *ccb)
464 {
465 struct scsi_cmnd *cmd;
466 struct scatterlist *sg;
467 struct st_sgtable *dst;
468 struct st_ss_sgitem *table;
469 int i, nseg;
470
471 cmd = ccb->cmd;
472 nseg = scsi_dma_map(cmd);
473 BUG_ON(nseg < 0);
474 if (nseg) {
475 dst = (struct st_sgtable *)req->variable;
476
477 ccb->sg_count = nseg;
478 dst->sg_count = cpu_to_le16((u16)nseg);
479 dst->max_sg_count = cpu_to_le16(hba->host->sg_tablesize);
480 dst->sz_in_byte = cpu_to_le32(scsi_bufflen(cmd));
481
482 table = (struct st_ss_sgitem *)(dst + 1);
483 scsi_for_each_sg(cmd, sg, nseg, i) {
484 table[i].count = cpu_to_le32((u32)sg_dma_len(sg));
485 table[i].addr =
486 cpu_to_le32(sg_dma_address(sg) & 0xffffffff);
487 table[i].addr_hi =
488 cpu_to_le32((sg_dma_address(sg) >> 16) >> 16);
489 }
490 }
491
492 return nseg;
493 }
494
495 static void stex_controller_info(struct st_hba *hba, struct st_ccb *ccb)
496 {
497 struct st_frame *p;
498 size_t count = sizeof(struct st_frame);
499
500 p = hba->copy_buffer;
501 scsi_sg_copy_to_buffer(ccb->cmd, p, count);
502 memset(p->base, 0, sizeof(u32)*6);
503 *(unsigned long *)(p->base) = pci_resource_start(hba->pdev, 0);
504 p->rom_addr = 0;
505
506 p->drv_ver.major = ST_VER_MAJOR;
507 p->drv_ver.minor = ST_VER_MINOR;
508 p->drv_ver.oem = ST_OEM;
509 p->drv_ver.build = ST_BUILD_VER;
510
511 p->bus = hba->pdev->bus->number;
512 p->slot = hba->pdev->devfn;
513 p->irq_level = 0;
514 p->irq_vec = hba->pdev->irq;
515 p->id = hba->pdev->vendor << 16 | hba->pdev->device;
516 p->subid =
517 hba->pdev->subsystem_vendor << 16 | hba->pdev->subsystem_device;
518
519 scsi_sg_copy_from_buffer(ccb->cmd, p, count);
520 }
521
522 static void
523 stex_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag)
524 {
525 req->tag = cpu_to_le16(tag);
526
527 hba->ccb[tag].req = req;
528 hba->out_req_cnt++;
529
530 writel(hba->req_head, hba->mmio_base + IMR0);
531 writel(MU_INBOUND_DOORBELL_REQHEADCHANGED, hba->mmio_base + IDBL);
532 readl(hba->mmio_base + IDBL); /* flush */
533 }
534
535 static void
536 stex_ss_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag)
537 {
538 struct scsi_cmnd *cmd;
539 struct st_msg_header *msg_h;
540 dma_addr_t addr;
541
542 req->tag = cpu_to_le16(tag);
543
544 hba->ccb[tag].req = req;
545 hba->out_req_cnt++;
546
547 cmd = hba->ccb[tag].cmd;
548 msg_h = (struct st_msg_header *)req - 1;
549 if (likely(cmd)) {
550 msg_h->channel = (u8)cmd->device->channel;
551 msg_h->timeout = cpu_to_le16(cmd->request->timeout/HZ);
552 }
553 addr = hba->dma_handle + hba->req_head * hba->rq_size;
554 addr += (hba->ccb[tag].sg_count+4)/11;
555 msg_h->handle = cpu_to_le64(addr);
556
557 ++hba->req_head;
558 hba->req_head %= hba->rq_count+1;
559 if (hba->cardtype == st_P3) {
560 writel((addr >> 16) >> 16, hba->mmio_base + YH2I_REQ_HI);
561 writel(addr, hba->mmio_base + YH2I_REQ);
562 } else {
563 writel((addr >> 16) >> 16, hba->mmio_base + YH2I_REQ_HI);
564 readl(hba->mmio_base + YH2I_REQ_HI); /* flush */
565 writel(addr, hba->mmio_base + YH2I_REQ);
566 readl(hba->mmio_base + YH2I_REQ); /* flush */
567 }
568 }
569
570 static void return_abnormal_state(struct st_hba *hba, int status)
571 {
572 struct st_ccb *ccb;
573 unsigned long flags;
574 u16 tag;
575
576 spin_lock_irqsave(hba->host->host_lock, flags);
577 for (tag = 0; tag < hba->host->can_queue; tag++) {
578 ccb = &hba->ccb[tag];
579 if (ccb->req == NULL)
580 continue;
581 ccb->req = NULL;
582 if (ccb->cmd) {
583 scsi_dma_unmap(ccb->cmd);
584 ccb->cmd->result = status << 16;
585 ccb->cmd->scsi_done(ccb->cmd);
586 ccb->cmd = NULL;
587 }
588 }
589 spin_unlock_irqrestore(hba->host->host_lock, flags);
590 }
591 static int
592 stex_slave_config(struct scsi_device *sdev)
593 {
594 sdev->use_10_for_rw = 1;
595 sdev->use_10_for_ms = 1;
596 blk_queue_rq_timeout(sdev->request_queue, 60 * HZ);
597
598 return 0;
599 }
600
601 static int
602 stex_queuecommand_lck(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
603 {
604 struct st_hba *hba;
605 struct Scsi_Host *host;
606 unsigned int id, lun;
607 struct req_msg *req;
608 u16 tag;
609
610 host = cmd->device->host;
611 id = cmd->device->id;
612 lun = cmd->device->lun;
613 hba = (struct st_hba *) &host->hostdata[0];
614 if (hba->mu_status == MU_STATE_NOCONNECT) {
615 cmd->result = DID_NO_CONNECT;
616 done(cmd);
617 return 0;
618 }
619 if (unlikely(hba->mu_status != MU_STATE_STARTED))
620 return SCSI_MLQUEUE_HOST_BUSY;
621
622 switch (cmd->cmnd[0]) {
623 case MODE_SENSE_10:
624 {
625 static char ms10_caching_page[12] =
626 { 0, 0x12, 0, 0, 0, 0, 0, 0, 0x8, 0xa, 0x4, 0 };
627 unsigned char page;
628
629 page = cmd->cmnd[2] & 0x3f;
630 if (page == 0x8 || page == 0x3f) {
631 scsi_sg_copy_from_buffer(cmd, ms10_caching_page,
632 sizeof(ms10_caching_page));
633 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
634 done(cmd);
635 } else
636 stex_invalid_field(cmd, done);
637 return 0;
638 }
639 case REPORT_LUNS:
640 /*
641 * The shasta firmware does not report actual luns in the
642 * target, so fail the command to force sequential lun scan.
643 * Also, the console device does not support this command.
644 */
645 if (hba->cardtype == st_shasta || id == host->max_id - 1) {
646 stex_invalid_field(cmd, done);
647 return 0;
648 }
649 break;
650 case TEST_UNIT_READY:
651 if (id == host->max_id - 1) {
652 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
653 done(cmd);
654 return 0;
655 }
656 break;
657 case INQUIRY:
658 if (lun >= host->max_lun) {
659 cmd->result = DID_NO_CONNECT << 16;
660 done(cmd);
661 return 0;
662 }
663 if (id != host->max_id - 1)
664 break;
665 if (!lun && !cmd->device->channel &&
666 (cmd->cmnd[1] & INQUIRY_EVPD) == 0) {
667 scsi_sg_copy_from_buffer(cmd, (void *)console_inq_page,
668 sizeof(console_inq_page));
669 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
670 done(cmd);
671 } else
672 stex_invalid_field(cmd, done);
673 return 0;
674 case PASSTHRU_CMD:
675 if (cmd->cmnd[1] == PASSTHRU_GET_DRVVER) {
676 struct st_drvver ver;
677 size_t cp_len = sizeof(ver);
678
679 ver.major = ST_VER_MAJOR;
680 ver.minor = ST_VER_MINOR;
681 ver.oem = ST_OEM;
682 ver.build = ST_BUILD_VER;
683 ver.signature[0] = PASSTHRU_SIGNATURE;
684 ver.console_id = host->max_id - 1;
685 ver.host_no = hba->host->host_no;
686 cp_len = scsi_sg_copy_from_buffer(cmd, &ver, cp_len);
687 cmd->result = sizeof(ver) == cp_len ?
688 DID_OK << 16 | COMMAND_COMPLETE << 8 :
689 DID_ERROR << 16 | COMMAND_COMPLETE << 8;
690 done(cmd);
691 return 0;
692 }
693 default:
694 break;
695 }
696
697 cmd->scsi_done = done;
698
699 tag = cmd->request->tag;
700
701 if (unlikely(tag >= host->can_queue))
702 return SCSI_MLQUEUE_HOST_BUSY;
703
704 req = hba->alloc_rq(hba);
705
706 req->lun = lun;
707 req->target = id;
708
709 /* cdb */
710 memcpy(req->cdb, cmd->cmnd, STEX_CDB_LENGTH);
711
712 if (cmd->sc_data_direction == DMA_FROM_DEVICE)
713 req->data_dir = MSG_DATA_DIR_IN;
714 else if (cmd->sc_data_direction == DMA_TO_DEVICE)
715 req->data_dir = MSG_DATA_DIR_OUT;
716 else
717 req->data_dir = MSG_DATA_DIR_ND;
718
719 hba->ccb[tag].cmd = cmd;
720 hba->ccb[tag].sense_bufflen = SCSI_SENSE_BUFFERSIZE;
721 hba->ccb[tag].sense_buffer = cmd->sense_buffer;
722
723 if (!hba->map_sg(hba, req, &hba->ccb[tag])) {
724 hba->ccb[tag].sg_count = 0;
725 memset(&req->variable[0], 0, 8);
726 }
727
728 hba->send(hba, req, tag);
729 return 0;
730 }
731
732 static DEF_SCSI_QCMD(stex_queuecommand)
733
734 static void stex_scsi_done(struct st_ccb *ccb)
735 {
736 struct scsi_cmnd *cmd = ccb->cmd;
737 int result;
738
739 if (ccb->srb_status == SRB_STATUS_SUCCESS || ccb->srb_status == 0) {
740 result = ccb->scsi_status;
741 switch (ccb->scsi_status) {
742 case SAM_STAT_GOOD:
743 result |= DID_OK << 16 | COMMAND_COMPLETE << 8;
744 break;
745 case SAM_STAT_CHECK_CONDITION:
746 result |= DRIVER_SENSE << 24;
747 break;
748 case SAM_STAT_BUSY:
749 result |= DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
750 break;
751 default:
752 result |= DID_ERROR << 16 | COMMAND_COMPLETE << 8;
753 break;
754 }
755 }
756 else if (ccb->srb_status & SRB_SEE_SENSE)
757 result = DRIVER_SENSE << 24 | SAM_STAT_CHECK_CONDITION;
758 else switch (ccb->srb_status) {
759 case SRB_STATUS_SELECTION_TIMEOUT:
760 result = DID_NO_CONNECT << 16 | COMMAND_COMPLETE << 8;
761 break;
762 case SRB_STATUS_BUSY:
763 result = DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
764 break;
765 case SRB_STATUS_INVALID_REQUEST:
766 case SRB_STATUS_ERROR:
767 default:
768 result = DID_ERROR << 16 | COMMAND_COMPLETE << 8;
769 break;
770 }
771
772 cmd->result = result;
773 cmd->scsi_done(cmd);
774 }
775
776 static void stex_copy_data(struct st_ccb *ccb,
777 struct status_msg *resp, unsigned int variable)
778 {
779 if (resp->scsi_status != SAM_STAT_GOOD) {
780 if (ccb->sense_buffer != NULL)
781 memcpy(ccb->sense_buffer, resp->variable,
782 min(variable, ccb->sense_bufflen));
783 return;
784 }
785
786 if (ccb->cmd == NULL)
787 return;
788 scsi_sg_copy_from_buffer(ccb->cmd, resp->variable, variable);
789 }
790
791 static void stex_check_cmd(struct st_hba *hba,
792 struct st_ccb *ccb, struct status_msg *resp)
793 {
794 if (ccb->cmd->cmnd[0] == MGT_CMD &&
795 resp->scsi_status != SAM_STAT_CHECK_CONDITION)
796 scsi_set_resid(ccb->cmd, scsi_bufflen(ccb->cmd) -
797 le32_to_cpu(*(__le32 *)&resp->variable[0]));
798 }
799
800 static void stex_mu_intr(struct st_hba *hba, u32 doorbell)
801 {
802 void __iomem *base = hba->mmio_base;
803 struct status_msg *resp;
804 struct st_ccb *ccb;
805 unsigned int size;
806 u16 tag;
807
808 if (unlikely(!(doorbell & MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED)))
809 return;
810
811 /* status payloads */
812 hba->status_head = readl(base + OMR1);
813 if (unlikely(hba->status_head > hba->sts_count)) {
814 printk(KERN_WARNING DRV_NAME "(%s): invalid status head\n",
815 pci_name(hba->pdev));
816 return;
817 }
818
819 /*
820 * it's not a valid status payload if:
821 * 1. there are no pending requests(e.g. during init stage)
822 * 2. there are some pending requests, but the controller is in
823 * reset status, and its type is not st_yosemite
824 * firmware of st_yosemite in reset status will return pending requests
825 * to driver, so we allow it to pass
826 */
827 if (unlikely(hba->out_req_cnt <= 0 ||
828 (hba->mu_status == MU_STATE_RESETTING &&
829 hba->cardtype != st_yosemite))) {
830 hba->status_tail = hba->status_head;
831 goto update_status;
832 }
833
834 while (hba->status_tail != hba->status_head) {
835 resp = stex_get_status(hba);
836 tag = le16_to_cpu(resp->tag);
837 if (unlikely(tag >= hba->host->can_queue)) {
838 printk(KERN_WARNING DRV_NAME
839 "(%s): invalid tag\n", pci_name(hba->pdev));
840 continue;
841 }
842
843 hba->out_req_cnt--;
844 ccb = &hba->ccb[tag];
845 if (unlikely(hba->wait_ccb == ccb))
846 hba->wait_ccb = NULL;
847 if (unlikely(ccb->req == NULL)) {
848 printk(KERN_WARNING DRV_NAME
849 "(%s): lagging req\n", pci_name(hba->pdev));
850 continue;
851 }
852
853 size = resp->payload_sz * sizeof(u32); /* payload size */
854 if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN ||
855 size > sizeof(*resp))) {
856 printk(KERN_WARNING DRV_NAME "(%s): bad status size\n",
857 pci_name(hba->pdev));
858 } else {
859 size -= sizeof(*resp) - STATUS_VAR_LEN; /* copy size */
860 if (size)
861 stex_copy_data(ccb, resp, size);
862 }
863
864 ccb->req = NULL;
865 ccb->srb_status = resp->srb_status;
866 ccb->scsi_status = resp->scsi_status;
867
868 if (likely(ccb->cmd != NULL)) {
869 if (hba->cardtype == st_yosemite)
870 stex_check_cmd(hba, ccb, resp);
871
872 if (unlikely(ccb->cmd->cmnd[0] == PASSTHRU_CMD &&
873 ccb->cmd->cmnd[1] == PASSTHRU_GET_ADAPTER))
874 stex_controller_info(hba, ccb);
875
876 scsi_dma_unmap(ccb->cmd);
877 stex_scsi_done(ccb);
878 } else
879 ccb->req_type = 0;
880 }
881
882 update_status:
883 writel(hba->status_head, base + IMR1);
884 readl(base + IMR1); /* flush */
885 }
886
887 static irqreturn_t stex_intr(int irq, void *__hba)
888 {
889 struct st_hba *hba = __hba;
890 void __iomem *base = hba->mmio_base;
891 u32 data;
892 unsigned long flags;
893
894 spin_lock_irqsave(hba->host->host_lock, flags);
895
896 data = readl(base + ODBL);
897
898 if (data && data != 0xffffffff) {
899 /* clear the interrupt */
900 writel(data, base + ODBL);
901 readl(base + ODBL); /* flush */
902 stex_mu_intr(hba, data);
903 spin_unlock_irqrestore(hba->host->host_lock, flags);
904 if (unlikely(data & MU_OUTBOUND_DOORBELL_REQUEST_RESET &&
905 hba->cardtype == st_shasta))
906 queue_work(hba->work_q, &hba->reset_work);
907 return IRQ_HANDLED;
908 }
909
910 spin_unlock_irqrestore(hba->host->host_lock, flags);
911
912 return IRQ_NONE;
913 }
914
915 static void stex_ss_mu_intr(struct st_hba *hba)
916 {
917 struct status_msg *resp;
918 struct st_ccb *ccb;
919 __le32 *scratch;
920 unsigned int size;
921 int count = 0;
922 u32 value;
923 u16 tag;
924
925 if (unlikely(hba->out_req_cnt <= 0 ||
926 hba->mu_status == MU_STATE_RESETTING))
927 return;
928
929 while (count < hba->sts_count) {
930 scratch = hba->scratch + hba->status_tail;
931 value = le32_to_cpu(*scratch);
932 if (unlikely(!(value & SS_STS_NORMAL)))
933 return;
934
935 resp = hba->status_buffer + hba->status_tail;
936 *scratch = 0;
937 ++count;
938 ++hba->status_tail;
939 hba->status_tail %= hba->sts_count+1;
940
941 tag = (u16)value;
942 if (unlikely(tag >= hba->host->can_queue)) {
943 printk(KERN_WARNING DRV_NAME
944 "(%s): invalid tag\n", pci_name(hba->pdev));
945 continue;
946 }
947
948 hba->out_req_cnt--;
949 ccb = &hba->ccb[tag];
950 if (unlikely(hba->wait_ccb == ccb))
951 hba->wait_ccb = NULL;
952 if (unlikely(ccb->req == NULL)) {
953 printk(KERN_WARNING DRV_NAME
954 "(%s): lagging req\n", pci_name(hba->pdev));
955 continue;
956 }
957
958 ccb->req = NULL;
959 if (likely(value & SS_STS_DONE)) { /* normal case */
960 ccb->srb_status = SRB_STATUS_SUCCESS;
961 ccb->scsi_status = SAM_STAT_GOOD;
962 } else {
963 ccb->srb_status = resp->srb_status;
964 ccb->scsi_status = resp->scsi_status;
965 size = resp->payload_sz * sizeof(u32);
966 if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN ||
967 size > sizeof(*resp))) {
968 printk(KERN_WARNING DRV_NAME
969 "(%s): bad status size\n",
970 pci_name(hba->pdev));
971 } else {
972 size -= sizeof(*resp) - STATUS_VAR_LEN;
973 if (size)
974 stex_copy_data(ccb, resp, size);
975 }
976 if (likely(ccb->cmd != NULL))
977 stex_check_cmd(hba, ccb, resp);
978 }
979
980 if (likely(ccb->cmd != NULL)) {
981 scsi_dma_unmap(ccb->cmd);
982 stex_scsi_done(ccb);
983 } else
984 ccb->req_type = 0;
985 }
986 }
987
988 static irqreturn_t stex_ss_intr(int irq, void *__hba)
989 {
990 struct st_hba *hba = __hba;
991 void __iomem *base = hba->mmio_base;
992 u32 data;
993 unsigned long flags;
994
995 spin_lock_irqsave(hba->host->host_lock, flags);
996
997 if (hba->cardtype == st_yel) {
998 data = readl(base + YI2H_INT);
999 if (data && data != 0xffffffff) {
1000 /* clear the interrupt */
1001 writel(data, base + YI2H_INT_C);
1002 stex_ss_mu_intr(hba);
1003 spin_unlock_irqrestore(hba->host->host_lock, flags);
1004 if (unlikely(data & SS_I2H_REQUEST_RESET))
1005 queue_work(hba->work_q, &hba->reset_work);
1006 return IRQ_HANDLED;
1007 }
1008 } else {
1009 data = readl(base + PSCRATCH4);
1010 if (data != 0xffffffff) {
1011 if (data != 0) {
1012 /* clear the interrupt */
1013 writel(data, base + PSCRATCH1);
1014 writel((1 << 22), base + YH2I_INT);
1015 }
1016 stex_ss_mu_intr(hba);
1017 spin_unlock_irqrestore(hba->host->host_lock, flags);
1018 if (unlikely(data & SS_I2H_REQUEST_RESET))
1019 queue_work(hba->work_q, &hba->reset_work);
1020 return IRQ_HANDLED;
1021 }
1022 }
1023
1024 spin_unlock_irqrestore(hba->host->host_lock, flags);
1025
1026 return IRQ_NONE;
1027 }
1028
1029 static int stex_common_handshake(struct st_hba *hba)
1030 {
1031 void __iomem *base = hba->mmio_base;
1032 struct handshake_frame *h;
1033 dma_addr_t status_phys;
1034 u32 data;
1035 unsigned long before;
1036
1037 if (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
1038 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
1039 readl(base + IDBL);
1040 before = jiffies;
1041 while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
1042 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
1043 printk(KERN_ERR DRV_NAME
1044 "(%s): no handshake signature\n",
1045 pci_name(hba->pdev));
1046 return -1;
1047 }
1048 rmb();
1049 msleep(1);
1050 }
1051 }
1052
1053 udelay(10);
1054
1055 data = readl(base + OMR1);
1056 if ((data & 0xffff0000) == MU_HANDSHAKE_SIGNATURE_HALF) {
1057 data &= 0x0000ffff;
1058 if (hba->host->can_queue > data) {
1059 hba->host->can_queue = data;
1060 hba->host->cmd_per_lun = data;
1061 }
1062 }
1063
1064 h = (struct handshake_frame *)hba->status_buffer;
1065 h->rb_phy = cpu_to_le64(hba->dma_handle);
1066 h->req_sz = cpu_to_le16(hba->rq_size);
1067 h->req_cnt = cpu_to_le16(hba->rq_count+1);
1068 h->status_sz = cpu_to_le16(sizeof(struct status_msg));
1069 h->status_cnt = cpu_to_le16(hba->sts_count+1);
1070 h->hosttime = cpu_to_le64(ktime_get_real_seconds());
1071 h->partner_type = HMU_PARTNER_TYPE;
1072 if (hba->extra_offset) {
1073 h->extra_offset = cpu_to_le32(hba->extra_offset);
1074 h->extra_size = cpu_to_le32(hba->dma_size - hba->extra_offset);
1075 } else
1076 h->extra_offset = h->extra_size = 0;
1077
1078 status_phys = hba->dma_handle + (hba->rq_count+1) * hba->rq_size;
1079 writel(status_phys, base + IMR0);
1080 readl(base + IMR0);
1081 writel((status_phys >> 16) >> 16, base + IMR1);
1082 readl(base + IMR1);
1083
1084 writel((status_phys >> 16) >> 16, base + OMR0); /* old fw compatible */
1085 readl(base + OMR0);
1086 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
1087 readl(base + IDBL); /* flush */
1088
1089 udelay(10);
1090 before = jiffies;
1091 while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
1092 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
1093 printk(KERN_ERR DRV_NAME
1094 "(%s): no signature after handshake frame\n",
1095 pci_name(hba->pdev));
1096 return -1;
1097 }
1098 rmb();
1099 msleep(1);
1100 }
1101
1102 writel(0, base + IMR0);
1103 readl(base + IMR0);
1104 writel(0, base + OMR0);
1105 readl(base + OMR0);
1106 writel(0, base + IMR1);
1107 readl(base + IMR1);
1108 writel(0, base + OMR1);
1109 readl(base + OMR1); /* flush */
1110 return 0;
1111 }
1112
1113 static int stex_ss_handshake(struct st_hba *hba)
1114 {
1115 void __iomem *base = hba->mmio_base;
1116 struct st_msg_header *msg_h;
1117 struct handshake_frame *h;
1118 __le32 *scratch;
1119 u32 data, scratch_size, mailboxdata, operationaldata;
1120 unsigned long before;
1121 int ret = 0;
1122
1123 before = jiffies;
1124
1125 if (hba->cardtype == st_yel) {
1126 operationaldata = readl(base + YIOA_STATUS);
1127 while (operationaldata != SS_MU_OPERATIONAL) {
1128 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
1129 printk(KERN_ERR DRV_NAME
1130 "(%s): firmware not operational\n",
1131 pci_name(hba->pdev));
1132 return -1;
1133 }
1134 msleep(1);
1135 operationaldata = readl(base + YIOA_STATUS);
1136 }
1137 } else {
1138 operationaldata = readl(base + PSCRATCH3);
1139 while (operationaldata != SS_MU_OPERATIONAL) {
1140 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
1141 printk(KERN_ERR DRV_NAME
1142 "(%s): firmware not operational\n",
1143 pci_name(hba->pdev));
1144 return -1;
1145 }
1146 msleep(1);
1147 operationaldata = readl(base + PSCRATCH3);
1148 }
1149 }
1150
1151 msg_h = (struct st_msg_header *)hba->dma_mem;
1152 msg_h->handle = cpu_to_le64(hba->dma_handle);
1153 msg_h->flag = SS_HEAD_HANDSHAKE;
1154
1155 h = (struct handshake_frame *)(msg_h + 1);
1156 h->rb_phy = cpu_to_le64(hba->dma_handle);
1157 h->req_sz = cpu_to_le16(hba->rq_size);
1158 h->req_cnt = cpu_to_le16(hba->rq_count+1);
1159 h->status_sz = cpu_to_le16(sizeof(struct status_msg));
1160 h->status_cnt = cpu_to_le16(hba->sts_count+1);
1161 h->hosttime = cpu_to_le64(ktime_get_real_seconds());
1162 h->partner_type = HMU_PARTNER_TYPE;
1163 h->extra_offset = h->extra_size = 0;
1164 scratch_size = (hba->sts_count+1)*sizeof(u32);
1165 h->scratch_size = cpu_to_le32(scratch_size);
1166
1167 if (hba->cardtype == st_yel) {
1168 data = readl(base + YINT_EN);
1169 data &= ~4;
1170 writel(data, base + YINT_EN);
1171 writel((hba->dma_handle >> 16) >> 16, base + YH2I_REQ_HI);
1172 readl(base + YH2I_REQ_HI);
1173 writel(hba->dma_handle, base + YH2I_REQ);
1174 readl(base + YH2I_REQ); /* flush */
1175 } else {
1176 data = readl(base + YINT_EN);
1177 data &= ~(1 << 0);
1178 data &= ~(1 << 2);
1179 writel(data, base + YINT_EN);
1180 if (hba->msi_lock == 0) {
1181 /* P3 MSI Register cannot access twice */
1182 writel((1 << 6), base + YH2I_INT);
1183 hba->msi_lock = 1;
1184 }
1185 writel((hba->dma_handle >> 16) >> 16, base + YH2I_REQ_HI);
1186 writel(hba->dma_handle, base + YH2I_REQ);
1187 }
1188
1189 before = jiffies;
1190 scratch = hba->scratch;
1191 if (hba->cardtype == st_yel) {
1192 while (!(le32_to_cpu(*scratch) & SS_STS_HANDSHAKE)) {
1193 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
1194 printk(KERN_ERR DRV_NAME
1195 "(%s): no signature after handshake frame\n",
1196 pci_name(hba->pdev));
1197 ret = -1;
1198 break;
1199 }
1200 rmb();
1201 msleep(1);
1202 }
1203 } else {
1204 mailboxdata = readl(base + MAILBOX_BASE + MAILBOX_HNDSHK_STS);
1205 while (mailboxdata != SS_STS_HANDSHAKE) {
1206 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
1207 printk(KERN_ERR DRV_NAME
1208 "(%s): no signature after handshake frame\n",
1209 pci_name(hba->pdev));
1210 ret = -1;
1211 break;
1212 }
1213 rmb();
1214 msleep(1);
1215 mailboxdata = readl(base + MAILBOX_BASE + MAILBOX_HNDSHK_STS);
1216 }
1217 }
1218 memset(scratch, 0, scratch_size);
1219 msg_h->flag = 0;
1220
1221 return ret;
1222 }
1223
1224 static int stex_handshake(struct st_hba *hba)
1225 {
1226 int err;
1227 unsigned long flags;
1228 unsigned int mu_status;
1229
1230 if (hba->cardtype == st_yel || hba->cardtype == st_P3)
1231 err = stex_ss_handshake(hba);
1232 else
1233 err = stex_common_handshake(hba);
1234 spin_lock_irqsave(hba->host->host_lock, flags);
1235 mu_status = hba->mu_status;
1236 if (err == 0) {
1237 hba->req_head = 0;
1238 hba->req_tail = 0;
1239 hba->status_head = 0;
1240 hba->status_tail = 0;
1241 hba->out_req_cnt = 0;
1242 hba->mu_status = MU_STATE_STARTED;
1243 } else
1244 hba->mu_status = MU_STATE_FAILED;
1245 if (mu_status == MU_STATE_RESETTING)
1246 wake_up_all(&hba->reset_waitq);
1247 spin_unlock_irqrestore(hba->host->host_lock, flags);
1248 return err;
1249 }
1250
1251 static int stex_abort(struct scsi_cmnd *cmd)
1252 {
1253 struct Scsi_Host *host = cmd->device->host;
1254 struct st_hba *hba = (struct st_hba *)host->hostdata;
1255 u16 tag = cmd->request->tag;
1256 void __iomem *base;
1257 u32 data;
1258 int result = SUCCESS;
1259 unsigned long flags;
1260
1261 scmd_printk(KERN_INFO, cmd, "aborting command\n");
1262
1263 base = hba->mmio_base;
1264 spin_lock_irqsave(host->host_lock, flags);
1265 if (tag < host->can_queue &&
1266 hba->ccb[tag].req && hba->ccb[tag].cmd == cmd)
1267 hba->wait_ccb = &hba->ccb[tag];
1268 else
1269 goto out;
1270
1271 if (hba->cardtype == st_yel) {
1272 data = readl(base + YI2H_INT);
1273 if (data == 0 || data == 0xffffffff)
1274 goto fail_out;
1275
1276 writel(data, base + YI2H_INT_C);
1277 stex_ss_mu_intr(hba);
1278 } else if (hba->cardtype == st_P3) {
1279 data = readl(base + PSCRATCH4);
1280 if (data == 0xffffffff)
1281 goto fail_out;
1282 if (data != 0) {
1283 writel(data, base + PSCRATCH1);
1284 writel((1 << 22), base + YH2I_INT);
1285 }
1286 stex_ss_mu_intr(hba);
1287 } else {
1288 data = readl(base + ODBL);
1289 if (data == 0 || data == 0xffffffff)
1290 goto fail_out;
1291
1292 writel(data, base + ODBL);
1293 readl(base + ODBL); /* flush */
1294 stex_mu_intr(hba, data);
1295 }
1296 if (hba->wait_ccb == NULL) {
1297 printk(KERN_WARNING DRV_NAME
1298 "(%s): lost interrupt\n", pci_name(hba->pdev));
1299 goto out;
1300 }
1301
1302 fail_out:
1303 scsi_dma_unmap(cmd);
1304 hba->wait_ccb->req = NULL; /* nullify the req's future return */
1305 hba->wait_ccb = NULL;
1306 result = FAILED;
1307 out:
1308 spin_unlock_irqrestore(host->host_lock, flags);
1309 return result;
1310 }
1311
1312 static void stex_hard_reset(struct st_hba *hba)
1313 {
1314 struct pci_bus *bus;
1315 int i;
1316 u16 pci_cmd;
1317 u8 pci_bctl;
1318
1319 for (i = 0; i < 16; i++)
1320 pci_read_config_dword(hba->pdev, i * 4,
1321 &hba->pdev->saved_config_space[i]);
1322
1323 /* Reset secondary bus. Our controller(MU/ATU) is the only device on
1324 secondary bus. Consult Intel 80331/3 developer's manual for detail */
1325 bus = hba->pdev->bus;
1326 pci_read_config_byte(bus->self, PCI_BRIDGE_CONTROL, &pci_bctl);
1327 pci_bctl |= PCI_BRIDGE_CTL_BUS_RESET;
1328 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
1329
1330 /*
1331 * 1 ms may be enough for 8-port controllers. But 16-port controllers
1332 * require more time to finish bus reset. Use 100 ms here for safety
1333 */
1334 msleep(100);
1335 pci_bctl &= ~PCI_BRIDGE_CTL_BUS_RESET;
1336 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
1337
1338 for (i = 0; i < MU_HARD_RESET_WAIT; i++) {
1339 pci_read_config_word(hba->pdev, PCI_COMMAND, &pci_cmd);
1340 if (pci_cmd != 0xffff && (pci_cmd & PCI_COMMAND_MASTER))
1341 break;
1342 msleep(1);
1343 }
1344
1345 ssleep(5);
1346 for (i = 0; i < 16; i++)
1347 pci_write_config_dword(hba->pdev, i * 4,
1348 hba->pdev->saved_config_space[i]);
1349 }
1350
1351 static int stex_yos_reset(struct st_hba *hba)
1352 {
1353 void __iomem *base;
1354 unsigned long flags, before;
1355 int ret = 0;
1356
1357 base = hba->mmio_base;
1358 writel(MU_INBOUND_DOORBELL_RESET, base + IDBL);
1359 readl(base + IDBL); /* flush */
1360 before = jiffies;
1361 while (hba->out_req_cnt > 0) {
1362 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) {
1363 printk(KERN_WARNING DRV_NAME
1364 "(%s): reset timeout\n", pci_name(hba->pdev));
1365 ret = -1;
1366 break;
1367 }
1368 msleep(1);
1369 }
1370
1371 spin_lock_irqsave(hba->host->host_lock, flags);
1372 if (ret == -1)
1373 hba->mu_status = MU_STATE_FAILED;
1374 else
1375 hba->mu_status = MU_STATE_STARTED;
1376 wake_up_all(&hba->reset_waitq);
1377 spin_unlock_irqrestore(hba->host->host_lock, flags);
1378
1379 return ret;
1380 }
1381
1382 static void stex_ss_reset(struct st_hba *hba)
1383 {
1384 writel(SS_H2I_INT_RESET, hba->mmio_base + YH2I_INT);
1385 readl(hba->mmio_base + YH2I_INT);
1386 ssleep(5);
1387 }
1388
1389 static void stex_p3_reset(struct st_hba *hba)
1390 {
1391 writel(SS_H2I_INT_RESET, hba->mmio_base + YH2I_INT);
1392 ssleep(5);
1393 }
1394
1395 static int stex_do_reset(struct st_hba *hba)
1396 {
1397 unsigned long flags;
1398 unsigned int mu_status = MU_STATE_RESETTING;
1399
1400 spin_lock_irqsave(hba->host->host_lock, flags);
1401 if (hba->mu_status == MU_STATE_STARTING) {
1402 spin_unlock_irqrestore(hba->host->host_lock, flags);
1403 printk(KERN_INFO DRV_NAME "(%s): request reset during init\n",
1404 pci_name(hba->pdev));
1405 return 0;
1406 }
1407 while (hba->mu_status == MU_STATE_RESETTING) {
1408 spin_unlock_irqrestore(hba->host->host_lock, flags);
1409 wait_event_timeout(hba->reset_waitq,
1410 hba->mu_status != MU_STATE_RESETTING,
1411 MU_MAX_DELAY * HZ);
1412 spin_lock_irqsave(hba->host->host_lock, flags);
1413 mu_status = hba->mu_status;
1414 }
1415
1416 if (mu_status != MU_STATE_RESETTING) {
1417 spin_unlock_irqrestore(hba->host->host_lock, flags);
1418 return (mu_status == MU_STATE_STARTED) ? 0 : -1;
1419 }
1420
1421 hba->mu_status = MU_STATE_RESETTING;
1422 spin_unlock_irqrestore(hba->host->host_lock, flags);
1423
1424 if (hba->cardtype == st_yosemite)
1425 return stex_yos_reset(hba);
1426
1427 if (hba->cardtype == st_shasta)
1428 stex_hard_reset(hba);
1429 else if (hba->cardtype == st_yel)
1430 stex_ss_reset(hba);
1431 else if (hba->cardtype == st_P3)
1432 stex_p3_reset(hba);
1433
1434 return_abnormal_state(hba, DID_RESET);
1435
1436 if (stex_handshake(hba) == 0)
1437 return 0;
1438
1439 printk(KERN_WARNING DRV_NAME "(%s): resetting: handshake failed\n",
1440 pci_name(hba->pdev));
1441 return -1;
1442 }
1443
1444 static int stex_reset(struct scsi_cmnd *cmd)
1445 {
1446 struct st_hba *hba;
1447
1448 hba = (struct st_hba *) &cmd->device->host->hostdata[0];
1449
1450 shost_printk(KERN_INFO, cmd->device->host,
1451 "resetting host\n");
1452
1453 return stex_do_reset(hba) ? FAILED : SUCCESS;
1454 }
1455
1456 static void stex_reset_work(struct work_struct *work)
1457 {
1458 struct st_hba *hba = container_of(work, struct st_hba, reset_work);
1459
1460 stex_do_reset(hba);
1461 }
1462
1463 static int stex_biosparam(struct scsi_device *sdev,
1464 struct block_device *bdev, sector_t capacity, int geom[])
1465 {
1466 int heads = 255, sectors = 63;
1467
1468 if (capacity < 0x200000) {
1469 heads = 64;
1470 sectors = 32;
1471 }
1472
1473 sector_div(capacity, heads * sectors);
1474
1475 geom[0] = heads;
1476 geom[1] = sectors;
1477 geom[2] = capacity;
1478
1479 return 0;
1480 }
1481
1482 static struct scsi_host_template driver_template = {
1483 .module = THIS_MODULE,
1484 .name = DRV_NAME,
1485 .proc_name = DRV_NAME,
1486 .bios_param = stex_biosparam,
1487 .queuecommand = stex_queuecommand,
1488 .slave_configure = stex_slave_config,
1489 .eh_abort_handler = stex_abort,
1490 .eh_host_reset_handler = stex_reset,
1491 .this_id = -1,
1492 };
1493
1494 static struct pci_device_id stex_pci_tbl[] = {
1495 /* st_shasta */
1496 { 0x105a, 0x8350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1497 st_shasta }, /* SuperTrak EX8350/8300/16350/16300 */
1498 { 0x105a, 0xc350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1499 st_shasta }, /* SuperTrak EX12350 */
1500 { 0x105a, 0x4302, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1501 st_shasta }, /* SuperTrak EX4350 */
1502 { 0x105a, 0xe350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1503 st_shasta }, /* SuperTrak EX24350 */
1504
1505 /* st_vsc */
1506 { 0x105a, 0x7250, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_vsc },
1507
1508 /* st_yosemite */
1509 { 0x105a, 0x8650, 0x105a, PCI_ANY_ID, 0, 0, st_yosemite },
1510
1511 /* st_seq */
1512 { 0x105a, 0x3360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_seq },
1513
1514 /* st_yel */
1515 { 0x105a, 0x8650, 0x1033, PCI_ANY_ID, 0, 0, st_yel },
1516 { 0x105a, 0x8760, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_yel },
1517
1518 /* st_P3, pluto */
1519 { PCI_VENDOR_ID_PROMISE, 0x8870, PCI_VENDOR_ID_PROMISE,
1520 0x8870, 0, 0, st_P3 },
1521 /* st_P3, p3 */
1522 { PCI_VENDOR_ID_PROMISE, 0x8870, PCI_VENDOR_ID_PROMISE,
1523 0x4300, 0, 0, st_P3 },
1524
1525 /* st_P3, SymplyStor4E */
1526 { PCI_VENDOR_ID_PROMISE, 0x8871, PCI_VENDOR_ID_PROMISE,
1527 0x4311, 0, 0, st_P3 },
1528 /* st_P3, SymplyStor8E */
1529 { PCI_VENDOR_ID_PROMISE, 0x8871, PCI_VENDOR_ID_PROMISE,
1530 0x4312, 0, 0, st_P3 },
1531 /* st_P3, SymplyStor4 */
1532 { PCI_VENDOR_ID_PROMISE, 0x8871, PCI_VENDOR_ID_PROMISE,
1533 0x4321, 0, 0, st_P3 },
1534 /* st_P3, SymplyStor8 */
1535 { PCI_VENDOR_ID_PROMISE, 0x8871, PCI_VENDOR_ID_PROMISE,
1536 0x4322, 0, 0, st_P3 },
1537 { } /* terminate list */
1538 };
1539
1540 static struct st_card_info stex_card_info[] = {
1541 /* st_shasta */
1542 {
1543 .max_id = 17,
1544 .max_lun = 8,
1545 .max_channel = 0,
1546 .rq_count = 32,
1547 .rq_size = 1048,
1548 .sts_count = 32,
1549 .alloc_rq = stex_alloc_req,
1550 .map_sg = stex_map_sg,
1551 .send = stex_send_cmd,
1552 },
1553
1554 /* st_vsc */
1555 {
1556 .max_id = 129,
1557 .max_lun = 1,
1558 .max_channel = 0,
1559 .rq_count = 32,
1560 .rq_size = 1048,
1561 .sts_count = 32,
1562 .alloc_rq = stex_alloc_req,
1563 .map_sg = stex_map_sg,
1564 .send = stex_send_cmd,
1565 },
1566
1567 /* st_yosemite */
1568 {
1569 .max_id = 2,
1570 .max_lun = 256,
1571 .max_channel = 0,
1572 .rq_count = 256,
1573 .rq_size = 1048,
1574 .sts_count = 256,
1575 .alloc_rq = stex_alloc_req,
1576 .map_sg = stex_map_sg,
1577 .send = stex_send_cmd,
1578 },
1579
1580 /* st_seq */
1581 {
1582 .max_id = 129,
1583 .max_lun = 1,
1584 .max_channel = 0,
1585 .rq_count = 32,
1586 .rq_size = 1048,
1587 .sts_count = 32,
1588 .alloc_rq = stex_alloc_req,
1589 .map_sg = stex_map_sg,
1590 .send = stex_send_cmd,
1591 },
1592
1593 /* st_yel */
1594 {
1595 .max_id = 129,
1596 .max_lun = 256,
1597 .max_channel = 3,
1598 .rq_count = 801,
1599 .rq_size = 512,
1600 .sts_count = 801,
1601 .alloc_rq = stex_ss_alloc_req,
1602 .map_sg = stex_ss_map_sg,
1603 .send = stex_ss_send_cmd,
1604 },
1605
1606 /* st_P3 */
1607 {
1608 .max_id = 129,
1609 .max_lun = 256,
1610 .max_channel = 0,
1611 .rq_count = 801,
1612 .rq_size = 512,
1613 .sts_count = 801,
1614 .alloc_rq = stex_ss_alloc_req,
1615 .map_sg = stex_ss_map_sg,
1616 .send = stex_ss_send_cmd,
1617 },
1618 };
1619
1620 static int stex_set_dma_mask(struct pci_dev * pdev)
1621 {
1622 int ret;
1623
1624 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))
1625 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
1626 return 0;
1627 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1628 if (!ret)
1629 ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
1630 return ret;
1631 }
1632
1633 static int stex_request_irq(struct st_hba *hba)
1634 {
1635 struct pci_dev *pdev = hba->pdev;
1636 int status;
1637
1638 if (msi || hba->cardtype == st_P3) {
1639 status = pci_enable_msi(pdev);
1640 if (status != 0)
1641 printk(KERN_ERR DRV_NAME
1642 "(%s): error %d setting up MSI\n",
1643 pci_name(pdev), status);
1644 else
1645 hba->msi_enabled = 1;
1646 } else
1647 hba->msi_enabled = 0;
1648
1649 status = request_irq(pdev->irq,
1650 (hba->cardtype == st_yel || hba->cardtype == st_P3) ?
1651 stex_ss_intr : stex_intr, IRQF_SHARED, DRV_NAME, hba);
1652
1653 if (status != 0) {
1654 if (hba->msi_enabled)
1655 pci_disable_msi(pdev);
1656 }
1657 return status;
1658 }
1659
1660 static void stex_free_irq(struct st_hba *hba)
1661 {
1662 struct pci_dev *pdev = hba->pdev;
1663
1664 free_irq(pdev->irq, hba);
1665 if (hba->msi_enabled)
1666 pci_disable_msi(pdev);
1667 }
1668
1669 static int stex_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1670 {
1671 struct st_hba *hba;
1672 struct Scsi_Host *host;
1673 const struct st_card_info *ci = NULL;
1674 u32 sts_offset, cp_offset, scratch_offset;
1675 int err;
1676
1677 err = pci_enable_device(pdev);
1678 if (err)
1679 return err;
1680
1681 pci_set_master(pdev);
1682
1683 S6flag = 0;
1684 register_reboot_notifier(&stex_notifier);
1685
1686 host = scsi_host_alloc(&driver_template, sizeof(struct st_hba));
1687
1688 if (!host) {
1689 printk(KERN_ERR DRV_NAME "(%s): scsi_host_alloc failed\n",
1690 pci_name(pdev));
1691 err = -ENOMEM;
1692 goto out_disable;
1693 }
1694
1695 hba = (struct st_hba *)host->hostdata;
1696 memset(hba, 0, sizeof(struct st_hba));
1697
1698 err = pci_request_regions(pdev, DRV_NAME);
1699 if (err < 0) {
1700 printk(KERN_ERR DRV_NAME "(%s): request regions failed\n",
1701 pci_name(pdev));
1702 goto out_scsi_host_put;
1703 }
1704
1705 hba->mmio_base = pci_ioremap_bar(pdev, 0);
1706 if ( !hba->mmio_base) {
1707 printk(KERN_ERR DRV_NAME "(%s): memory map failed\n",
1708 pci_name(pdev));
1709 err = -ENOMEM;
1710 goto out_release_regions;
1711 }
1712
1713 err = stex_set_dma_mask(pdev);
1714 if (err) {
1715 printk(KERN_ERR DRV_NAME "(%s): set dma mask failed\n",
1716 pci_name(pdev));
1717 goto out_iounmap;
1718 }
1719
1720 hba->cardtype = (unsigned int) id->driver_data;
1721 ci = &stex_card_info[hba->cardtype];
1722 switch (id->subdevice) {
1723 case 0x4221:
1724 case 0x4222:
1725 case 0x4223:
1726 case 0x4224:
1727 case 0x4225:
1728 case 0x4226:
1729 case 0x4227:
1730 case 0x4261:
1731 case 0x4262:
1732 case 0x4263:
1733 case 0x4264:
1734 case 0x4265:
1735 break;
1736 default:
1737 if (hba->cardtype == st_yel || hba->cardtype == st_P3)
1738 hba->supports_pm = 1;
1739 }
1740
1741 sts_offset = scratch_offset = (ci->rq_count+1) * ci->rq_size;
1742 if (hba->cardtype == st_yel || hba->cardtype == st_P3)
1743 sts_offset += (ci->sts_count+1) * sizeof(u32);
1744 cp_offset = sts_offset + (ci->sts_count+1) * sizeof(struct status_msg);
1745 hba->dma_size = cp_offset + sizeof(struct st_frame);
1746 if (hba->cardtype == st_seq ||
1747 (hba->cardtype == st_vsc && (pdev->subsystem_device & 1))) {
1748 hba->extra_offset = hba->dma_size;
1749 hba->dma_size += ST_ADDITIONAL_MEM;
1750 }
1751 hba->dma_mem = dma_alloc_coherent(&pdev->dev,
1752 hba->dma_size, &hba->dma_handle, GFP_KERNEL);
1753 if (!hba->dma_mem) {
1754 /* Retry minimum coherent mapping for st_seq and st_vsc */
1755 if (hba->cardtype == st_seq ||
1756 (hba->cardtype == st_vsc && (pdev->subsystem_device & 1))) {
1757 printk(KERN_WARNING DRV_NAME
1758 "(%s): allocating min buffer for controller\n",
1759 pci_name(pdev));
1760 hba->dma_size = hba->extra_offset
1761 + ST_ADDITIONAL_MEM_MIN;
1762 hba->dma_mem = dma_alloc_coherent(&pdev->dev,
1763 hba->dma_size, &hba->dma_handle, GFP_KERNEL);
1764 }
1765
1766 if (!hba->dma_mem) {
1767 err = -ENOMEM;
1768 printk(KERN_ERR DRV_NAME "(%s): dma mem alloc failed\n",
1769 pci_name(pdev));
1770 goto out_iounmap;
1771 }
1772 }
1773
1774 hba->ccb = kcalloc(ci->rq_count, sizeof(struct st_ccb), GFP_KERNEL);
1775 if (!hba->ccb) {
1776 err = -ENOMEM;
1777 printk(KERN_ERR DRV_NAME "(%s): ccb alloc failed\n",
1778 pci_name(pdev));
1779 goto out_pci_free;
1780 }
1781
1782 if (hba->cardtype == st_yel || hba->cardtype == st_P3)
1783 hba->scratch = (__le32 *)(hba->dma_mem + scratch_offset);
1784 hba->status_buffer = (struct status_msg *)(hba->dma_mem + sts_offset);
1785 hba->copy_buffer = hba->dma_mem + cp_offset;
1786 hba->rq_count = ci->rq_count;
1787 hba->rq_size = ci->rq_size;
1788 hba->sts_count = ci->sts_count;
1789 hba->alloc_rq = ci->alloc_rq;
1790 hba->map_sg = ci->map_sg;
1791 hba->send = ci->send;
1792 hba->mu_status = MU_STATE_STARTING;
1793 hba->msi_lock = 0;
1794
1795 if (hba->cardtype == st_yel || hba->cardtype == st_P3)
1796 host->sg_tablesize = 38;
1797 else
1798 host->sg_tablesize = 32;
1799 host->can_queue = ci->rq_count;
1800 host->cmd_per_lun = ci->rq_count;
1801 host->max_id = ci->max_id;
1802 host->max_lun = ci->max_lun;
1803 host->max_channel = ci->max_channel;
1804 host->unique_id = host->host_no;
1805 host->max_cmd_len = STEX_CDB_LENGTH;
1806
1807 hba->host = host;
1808 hba->pdev = pdev;
1809 init_waitqueue_head(&hba->reset_waitq);
1810
1811 snprintf(hba->work_q_name, sizeof(hba->work_q_name),
1812 "stex_wq_%d", host->host_no);
1813 hba->work_q = create_singlethread_workqueue(hba->work_q_name);
1814 if (!hba->work_q) {
1815 printk(KERN_ERR DRV_NAME "(%s): create workqueue failed\n",
1816 pci_name(pdev));
1817 err = -ENOMEM;
1818 goto out_ccb_free;
1819 }
1820 INIT_WORK(&hba->reset_work, stex_reset_work);
1821
1822 err = stex_request_irq(hba);
1823 if (err) {
1824 printk(KERN_ERR DRV_NAME "(%s): request irq failed\n",
1825 pci_name(pdev));
1826 goto out_free_wq;
1827 }
1828
1829 err = stex_handshake(hba);
1830 if (err)
1831 goto out_free_irq;
1832
1833 pci_set_drvdata(pdev, hba);
1834
1835 err = scsi_add_host(host, &pdev->dev);
1836 if (err) {
1837 printk(KERN_ERR DRV_NAME "(%s): scsi_add_host failed\n",
1838 pci_name(pdev));
1839 goto out_free_irq;
1840 }
1841
1842 scsi_scan_host(host);
1843
1844 return 0;
1845
1846 out_free_irq:
1847 stex_free_irq(hba);
1848 out_free_wq:
1849 destroy_workqueue(hba->work_q);
1850 out_ccb_free:
1851 kfree(hba->ccb);
1852 out_pci_free:
1853 dma_free_coherent(&pdev->dev, hba->dma_size,
1854 hba->dma_mem, hba->dma_handle);
1855 out_iounmap:
1856 iounmap(hba->mmio_base);
1857 out_release_regions:
1858 pci_release_regions(pdev);
1859 out_scsi_host_put:
1860 scsi_host_put(host);
1861 out_disable:
1862 pci_disable_device(pdev);
1863
1864 return err;
1865 }
1866
1867 static void stex_hba_stop(struct st_hba *hba, int st_sleep_mic)
1868 {
1869 struct req_msg *req;
1870 struct st_msg_header *msg_h;
1871 unsigned long flags;
1872 unsigned long before;
1873 u16 tag = 0;
1874
1875 spin_lock_irqsave(hba->host->host_lock, flags);
1876
1877 if ((hba->cardtype == st_yel || hba->cardtype == st_P3) &&
1878 hba->supports_pm == 1) {
1879 if (st_sleep_mic == ST_NOTHANDLED) {
1880 spin_unlock_irqrestore(hba->host->host_lock, flags);
1881 return;
1882 }
1883 }
1884 req = hba->alloc_rq(hba);
1885 if (hba->cardtype == st_yel || hba->cardtype == st_P3) {
1886 msg_h = (struct st_msg_header *)req - 1;
1887 memset(msg_h, 0, hba->rq_size);
1888 } else
1889 memset(req, 0, hba->rq_size);
1890
1891 if ((hba->cardtype == st_yosemite || hba->cardtype == st_yel
1892 || hba->cardtype == st_P3)
1893 && st_sleep_mic == ST_IGNORED) {
1894 req->cdb[0] = MGT_CMD;
1895 req->cdb[1] = MGT_CMD_SIGNATURE;
1896 req->cdb[2] = CTLR_CONFIG_CMD;
1897 req->cdb[3] = CTLR_SHUTDOWN;
1898 } else if ((hba->cardtype == st_yel || hba->cardtype == st_P3)
1899 && st_sleep_mic != ST_IGNORED) {
1900 req->cdb[0] = MGT_CMD;
1901 req->cdb[1] = MGT_CMD_SIGNATURE;
1902 req->cdb[2] = CTLR_CONFIG_CMD;
1903 req->cdb[3] = PMIC_SHUTDOWN;
1904 req->cdb[4] = st_sleep_mic;
1905 } else {
1906 req->cdb[0] = CONTROLLER_CMD;
1907 req->cdb[1] = CTLR_POWER_STATE_CHANGE;
1908 req->cdb[2] = CTLR_POWER_SAVING;
1909 }
1910 hba->ccb[tag].cmd = NULL;
1911 hba->ccb[tag].sg_count = 0;
1912 hba->ccb[tag].sense_bufflen = 0;
1913 hba->ccb[tag].sense_buffer = NULL;
1914 hba->ccb[tag].req_type = PASSTHRU_REQ_TYPE;
1915 hba->send(hba, req, tag);
1916 spin_unlock_irqrestore(hba->host->host_lock, flags);
1917 before = jiffies;
1918 while (hba->ccb[tag].req_type & PASSTHRU_REQ_TYPE) {
1919 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) {
1920 hba->ccb[tag].req_type = 0;
1921 hba->mu_status = MU_STATE_STOP;
1922 return;
1923 }
1924 msleep(1);
1925 }
1926 hba->mu_status = MU_STATE_STOP;
1927 }
1928
1929 static void stex_hba_free(struct st_hba *hba)
1930 {
1931 stex_free_irq(hba);
1932
1933 destroy_workqueue(hba->work_q);
1934
1935 iounmap(hba->mmio_base);
1936
1937 pci_release_regions(hba->pdev);
1938
1939 kfree(hba->ccb);
1940
1941 dma_free_coherent(&hba->pdev->dev, hba->dma_size,
1942 hba->dma_mem, hba->dma_handle);
1943 }
1944
1945 static void stex_remove(struct pci_dev *pdev)
1946 {
1947 struct st_hba *hba = pci_get_drvdata(pdev);
1948
1949 hba->mu_status = MU_STATE_NOCONNECT;
1950 return_abnormal_state(hba, DID_NO_CONNECT);
1951 scsi_remove_host(hba->host);
1952
1953 scsi_block_requests(hba->host);
1954
1955 stex_hba_free(hba);
1956
1957 scsi_host_put(hba->host);
1958
1959 pci_disable_device(pdev);
1960
1961 unregister_reboot_notifier(&stex_notifier);
1962 }
1963
1964 static void stex_shutdown(struct pci_dev *pdev)
1965 {
1966 struct st_hba *hba = pci_get_drvdata(pdev);
1967
1968 if (hba->supports_pm == 0) {
1969 stex_hba_stop(hba, ST_IGNORED);
1970 } else if (hba->supports_pm == 1 && S6flag) {
1971 unregister_reboot_notifier(&stex_notifier);
1972 stex_hba_stop(hba, ST_S6);
1973 } else
1974 stex_hba_stop(hba, ST_S5);
1975 }
1976
1977 static int stex_choice_sleep_mic(struct st_hba *hba, pm_message_t state)
1978 {
1979 switch (state.event) {
1980 case PM_EVENT_SUSPEND:
1981 return ST_S3;
1982 case PM_EVENT_HIBERNATE:
1983 hba->msi_lock = 0;
1984 return ST_S4;
1985 default:
1986 return ST_NOTHANDLED;
1987 }
1988 }
1989
1990 static int stex_suspend(struct pci_dev *pdev, pm_message_t state)
1991 {
1992 struct st_hba *hba = pci_get_drvdata(pdev);
1993
1994 if ((hba->cardtype == st_yel || hba->cardtype == st_P3)
1995 && hba->supports_pm == 1)
1996 stex_hba_stop(hba, stex_choice_sleep_mic(hba, state));
1997 else
1998 stex_hba_stop(hba, ST_IGNORED);
1999 return 0;
2000 }
2001
2002 static int stex_resume(struct pci_dev *pdev)
2003 {
2004 struct st_hba *hba = pci_get_drvdata(pdev);
2005
2006 hba->mu_status = MU_STATE_STARTING;
2007 stex_handshake(hba);
2008 return 0;
2009 }
2010
2011 static int stex_halt(struct notifier_block *nb, unsigned long event, void *buf)
2012 {
2013 S6flag = 1;
2014 return NOTIFY_OK;
2015 }
2016 MODULE_DEVICE_TABLE(pci, stex_pci_tbl);
2017
2018 static struct pci_driver stex_pci_driver = {
2019 .name = DRV_NAME,
2020 .id_table = stex_pci_tbl,
2021 .probe = stex_probe,
2022 .remove = stex_remove,
2023 .shutdown = stex_shutdown,
2024 .suspend = stex_suspend,
2025 .resume = stex_resume,
2026 };
2027
2028 static int __init stex_init(void)
2029 {
2030 printk(KERN_INFO DRV_NAME
2031 ": Promise SuperTrak EX Driver version: %s\n",
2032 ST_DRIVER_VERSION);
2033
2034 return pci_register_driver(&stex_pci_driver);
2035 }
2036
2037 static void __exit stex_exit(void)
2038 {
2039 pci_unregister_driver(&stex_pci_driver);
2040 }
2041
2042 module_init(stex_init);
2043 module_exit(stex_exit);
Linux with added FPC-III support