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Merge tag 'block-5.11-2021-01-10' of git://git.kernel.dk/linux-block
[linux/fpc-iii.git] / drivers / scsi / stex.c
blob40473e4f850ff54473828c72a5d90fd8957fefa3
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * SuperTrak EX Series Storage Controller driver for Linux
4 *
5 * Copyright (C) 2005-2015 Promise Technology Inc.
6 *
7 * Written By:
8 * Ed Lin <promise_linux@promise.com>
9 */
10
11 #include <linux/init.h>
12 #include <linux/errno.h>
13 #include <linux/kernel.h>
14 #include <linux/delay.h>
15 #include <linux/slab.h>
16 #include <linux/time.h>
17 #include <linux/pci.h>
18 #include <linux/blkdev.h>
19 #include <linux/interrupt.h>
20 #include <linux/types.h>
21 #include <linux/module.h>
22 #include <linux/spinlock.h>
23 #include <linux/ktime.h>
24 #include <linux/reboot.h>
25 #include <asm/io.h>
26 #include <asm/irq.h>
27 #include <asm/byteorder.h>
28 #include <scsi/scsi.h>
29 #include <scsi/scsi_device.h>
30 #include <scsi/scsi_cmnd.h>
31 #include <scsi/scsi_host.h>
32 #include <scsi/scsi_tcq.h>
33 #include <scsi/scsi_dbg.h>
34 #include <scsi/scsi_eh.h>
35
36 #define DRV_NAME "stex"
37 #define ST_DRIVER_VERSION "6.02.0000.01"
38 #define ST_VER_MAJOR 6
39 #define ST_VER_MINOR 02
40 #define ST_OEM 0000
41 #define ST_BUILD_VER 01
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 YIOA_STATUS = 0x00,
57 YH2I_INT = 0x20,
58 YINT_EN = 0x34,
59 YI2H_INT = 0x9c,
60 YI2H_INT_C = 0xa0,
61 YH2I_REQ = 0xc0,
62 YH2I_REQ_HI = 0xc4,
63 PSCRATCH0 = 0xb0,
64 PSCRATCH1 = 0xb4,
65 PSCRATCH2 = 0xb8,
66 PSCRATCH3 = 0xbc,
67 PSCRATCH4 = 0xc8,
68 MAILBOX_BASE = 0x1000,
69 MAILBOX_HNDSHK_STS = 0x0,
70
71 /* MU register value */
72 MU_INBOUND_DOORBELL_HANDSHAKE = (1 << 0),
73 MU_INBOUND_DOORBELL_REQHEADCHANGED = (1 << 1),
74 MU_INBOUND_DOORBELL_STATUSTAILCHANGED = (1 << 2),
75 MU_INBOUND_DOORBELL_HMUSTOPPED = (1 << 3),
76 MU_INBOUND_DOORBELL_RESET = (1 << 4),
77
78 MU_OUTBOUND_DOORBELL_HANDSHAKE = (1 << 0),
79 MU_OUTBOUND_DOORBELL_REQUESTTAILCHANGED = (1 << 1),
80 MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED = (1 << 2),
81 MU_OUTBOUND_DOORBELL_BUSCHANGE = (1 << 3),
82 MU_OUTBOUND_DOORBELL_HASEVENT = (1 << 4),
83 MU_OUTBOUND_DOORBELL_REQUEST_RESET = (1 << 27),
84
85 /* MU status code */
86 MU_STATE_STARTING = 1,
87 MU_STATE_STARTED = 2,
88 MU_STATE_RESETTING = 3,
89 MU_STATE_FAILED = 4,
90 MU_STATE_STOP = 5,
91 MU_STATE_NOCONNECT = 6,
92
93 MU_MAX_DELAY = 50,
94 MU_HANDSHAKE_SIGNATURE = 0x55aaaa55,
95 MU_HANDSHAKE_SIGNATURE_HALF = 0x5a5a0000,
96 MU_HARD_RESET_WAIT = 30000,
97 HMU_PARTNER_TYPE = 2,
98
99 /* firmware returned values */
100 SRB_STATUS_SUCCESS = 0x01,
101 SRB_STATUS_ERROR = 0x04,
102 SRB_STATUS_BUSY = 0x05,
103 SRB_STATUS_INVALID_REQUEST = 0x06,
104 SRB_STATUS_SELECTION_TIMEOUT = 0x0A,
105 SRB_SEE_SENSE = 0x80,
106
107 /* task attribute */
108 TASK_ATTRIBUTE_SIMPLE = 0x0,
109 TASK_ATTRIBUTE_HEADOFQUEUE = 0x1,
110 TASK_ATTRIBUTE_ORDERED = 0x2,
111 TASK_ATTRIBUTE_ACA = 0x4,
112
113 SS_STS_NORMAL = 0x80000000,
114 SS_STS_DONE = 0x40000000,
115 SS_STS_HANDSHAKE = 0x20000000,
116
117 SS_HEAD_HANDSHAKE = 0x80,
118
119 SS_H2I_INT_RESET = 0x100,
120
121 SS_I2H_REQUEST_RESET = 0x2000,
122
123 SS_MU_OPERATIONAL = 0x80000000,
124
125 STEX_CDB_LENGTH = 16,
126 STATUS_VAR_LEN = 128,
127
128 /* sg flags */
129 SG_CF_EOT = 0x80, /* end of table */
130 SG_CF_64B = 0x40, /* 64 bit item */
131 SG_CF_HOST = 0x20, /* sg in host memory */
132 MSG_DATA_DIR_ND = 0,
133 MSG_DATA_DIR_IN = 1,
134 MSG_DATA_DIR_OUT = 2,
135
136 st_shasta = 0,
137 st_vsc = 1,
138 st_yosemite = 2,
139 st_seq = 3,
140 st_yel = 4,
141 st_P3 = 5,
142
143 PASSTHRU_REQ_TYPE = 0x00000001,
144 PASSTHRU_REQ_NO_WAKEUP = 0x00000100,
145 ST_INTERNAL_TIMEOUT = 180,
146
147 ST_TO_CMD = 0,
148 ST_FROM_CMD = 1,
149
150 /* vendor specific commands of Promise */
151 MGT_CMD = 0xd8,
152 SINBAND_MGT_CMD = 0xd9,
153 ARRAY_CMD = 0xe0,
154 CONTROLLER_CMD = 0xe1,
155 DEBUGGING_CMD = 0xe2,
156 PASSTHRU_CMD = 0xe3,
157
158 PASSTHRU_GET_ADAPTER = 0x05,
159 PASSTHRU_GET_DRVVER = 0x10,
160
161 CTLR_CONFIG_CMD = 0x03,
162 CTLR_SHUTDOWN = 0x0d,
163
164 CTLR_POWER_STATE_CHANGE = 0x0e,
165 CTLR_POWER_SAVING = 0x01,
166
167 PASSTHRU_SIGNATURE = 0x4e415041,
168 MGT_CMD_SIGNATURE = 0xba,
169
170 INQUIRY_EVPD = 0x01,
171
172 ST_ADDITIONAL_MEM = 0x200000,
173 ST_ADDITIONAL_MEM_MIN = 0x80000,
174 PMIC_SHUTDOWN = 0x0D,
175 PMIC_REUMSE = 0x10,
176 ST_IGNORED = -1,
177 ST_NOTHANDLED = 7,
178 ST_S3 = 3,
179 ST_S4 = 4,
180 ST_S5 = 5,
181 ST_S6 = 6,
182 };
183
184 struct st_sgitem {
185 u8 ctrl; /* SG_CF_xxx */
186 u8 reserved[3];
187 __le32 count;
188 __le64 addr;
189 };
190
191 struct st_ss_sgitem {
192 __le32 addr;
193 __le32 addr_hi;
194 __le32 count;
195 };
196
197 struct st_sgtable {
198 __le16 sg_count;
199 __le16 max_sg_count;
200 __le32 sz_in_byte;
201 };
202
203 struct st_msg_header {
204 __le64 handle;
205 u8 flag;
206 u8 channel;
207 __le16 timeout;
208 u32 reserved;
209 };
210
211 struct handshake_frame {
212 __le64 rb_phy; /* request payload queue physical address */
213 __le16 req_sz; /* size of each request payload */
214 __le16 req_cnt; /* count of reqs the buffer can hold */
215 __le16 status_sz; /* size of each status payload */
216 __le16 status_cnt; /* count of status the buffer can hold */
217 __le64 hosttime; /* seconds from Jan 1, 1970 (GMT) */
218 u8 partner_type; /* who sends this frame */
219 u8 reserved0[7];
220 __le32 partner_ver_major;
221 __le32 partner_ver_minor;
222 __le32 partner_ver_oem;
223 __le32 partner_ver_build;
224 __le32 extra_offset; /* NEW */
225 __le32 extra_size; /* NEW */
226 __le32 scratch_size;
227 u32 reserved1;
228 };
229
230 struct req_msg {
231 __le16 tag;
232 u8 lun;
233 u8 target;
234 u8 task_attr;
235 u8 task_manage;
236 u8 data_dir;
237 u8 payload_sz; /* payload size in 4-byte, not used */
238 u8 cdb[STEX_CDB_LENGTH];
239 u32 variable[];
240 };
241
242 struct status_msg {
243 __le16 tag;
244 u8 lun;
245 u8 target;
246 u8 srb_status;
247 u8 scsi_status;
248 u8 reserved;
249 u8 payload_sz; /* payload size in 4-byte */
250 u8 variable[STATUS_VAR_LEN];
251 };
252
253 struct ver_info {
254 u32 major;
255 u32 minor;
256 u32 oem;
257 u32 build;
258 u32 reserved[2];
259 };
260
261 struct st_frame {
262 u32 base[6];
263 u32 rom_addr;
264
265 struct ver_info drv_ver;
266 struct ver_info bios_ver;
267
268 u32 bus;
269 u32 slot;
270 u32 irq_level;
271 u32 irq_vec;
272 u32 id;
273 u32 subid;
274
275 u32 dimm_size;
276 u8 dimm_type;
277 u8 reserved[3];
278
279 u32 channel;
280 u32 reserved1;
281 };
282
283 struct st_drvver {
284 u32 major;
285 u32 minor;
286 u32 oem;
287 u32 build;
288 u32 signature[2];
289 u8 console_id;
290 u8 host_no;
291 u8 reserved0[2];
292 u32 reserved[3];
293 };
294
295 struct st_ccb {
296 struct req_msg *req;
297 struct scsi_cmnd *cmd;
298
299 void *sense_buffer;
300 unsigned int sense_bufflen;
301 int sg_count;
302
303 u32 req_type;
304 u8 srb_status;
305 u8 scsi_status;
306 u8 reserved[2];
307 };
308
309 struct st_hba {
310 void __iomem *mmio_base; /* iomapped PCI memory space */
311 void *dma_mem;
312 dma_addr_t dma_handle;
313 size_t dma_size;
314
315 struct Scsi_Host *host;
316 struct pci_dev *pdev;
317
318 struct req_msg * (*alloc_rq) (struct st_hba *);
319 int (*map_sg)(struct st_hba *, struct req_msg *, struct st_ccb *);
320 void (*send) (struct st_hba *, struct req_msg *, u16);
321
322 u32 req_head;
323 u32 req_tail;
324 u32 status_head;
325 u32 status_tail;
326
327 struct status_msg *status_buffer;
328 void *copy_buffer; /* temp buffer for driver-handled commands */
329 struct st_ccb *ccb;
330 struct st_ccb *wait_ccb;
331 __le32 *scratch;
332
333 char work_q_name[20];
334 struct workqueue_struct *work_q;
335 struct work_struct reset_work;
336 wait_queue_head_t reset_waitq;
337 unsigned int mu_status;
338 unsigned int cardtype;
339 int msi_enabled;
340 int out_req_cnt;
341 u32 extra_offset;
342 u16 rq_count;
343 u16 rq_size;
344 u16 sts_count;
345 u8 supports_pm;
346 int msi_lock;
347 };
348
349 struct st_card_info {
350 struct req_msg * (*alloc_rq) (struct st_hba *);
351 int (*map_sg)(struct st_hba *, struct req_msg *, struct st_ccb *);
352 void (*send) (struct st_hba *, struct req_msg *, u16);
353 unsigned int max_id;
354 unsigned int max_lun;
355 unsigned int max_channel;
356 u16 rq_count;
357 u16 rq_size;
358 u16 sts_count;
359 };
360
361 static int S6flag;
362 static int stex_halt(struct notifier_block *nb, ulong event, void *buf);
363 static struct notifier_block stex_notifier = {
364 stex_halt, NULL, 0
365 };
366
367 static int msi;
368 module_param(msi, int, 0);
369 MODULE_PARM_DESC(msi, "Enable Message Signaled Interrupts(0=off, 1=on)");
370
371 static const char console_inq_page[] =
372 {
373 0x03,0x00,0x03,0x03,0xFA,0x00,0x00,0x30,
374 0x50,0x72,0x6F,0x6D,0x69,0x73,0x65,0x20, /* "Promise " */
375 0x52,0x41,0x49,0x44,0x20,0x43,0x6F,0x6E, /* "RAID Con" */
376 0x73,0x6F,0x6C,0x65,0x20,0x20,0x20,0x20, /* "sole " */
377 0x31,0x2E,0x30,0x30,0x20,0x20,0x20,0x20, /* "1.00 " */
378 0x53,0x58,0x2F,0x52,0x53,0x41,0x46,0x2D, /* "SX/RSAF-" */
379 0x54,0x45,0x31,0x2E,0x30,0x30,0x20,0x20, /* "TE1.00 " */
380 0x0C,0x20,0x20,0x20,0x20,0x20,0x20,0x20
381 };
382
383 MODULE_AUTHOR("Ed Lin");
384 MODULE_DESCRIPTION("Promise Technology SuperTrak EX Controllers");
385 MODULE_LICENSE("GPL");
386 MODULE_VERSION(ST_DRIVER_VERSION);
387
388 static struct status_msg *stex_get_status(struct st_hba *hba)
389 {
390 struct status_msg *status = hba->status_buffer + hba->status_tail;
391
392 ++hba->status_tail;
393 hba->status_tail %= hba->sts_count+1;
394
395 return status;
396 }
397
398 static void stex_invalid_field(struct scsi_cmnd *cmd,
399 void (*done)(struct scsi_cmnd *))
400 {
401 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
402
403 /* "Invalid field in cdb" */
404 scsi_build_sense_buffer(0, cmd->sense_buffer, ILLEGAL_REQUEST, 0x24,
405 0x0);
406 done(cmd);
407 }
408
409 static struct req_msg *stex_alloc_req(struct st_hba *hba)
410 {
411 struct req_msg *req = hba->dma_mem + hba->req_head * hba->rq_size;
412
413 ++hba->req_head;
414 hba->req_head %= hba->rq_count+1;
415
416 return req;
417 }
418
419 static struct req_msg *stex_ss_alloc_req(struct st_hba *hba)
420 {
421 return (struct req_msg *)(hba->dma_mem +
422 hba->req_head * hba->rq_size + sizeof(struct st_msg_header));
423 }
424
425 static int stex_map_sg(struct st_hba *hba,
426 struct req_msg *req, struct st_ccb *ccb)
427 {
428 struct scsi_cmnd *cmd;
429 struct scatterlist *sg;
430 struct st_sgtable *dst;
431 struct st_sgitem *table;
432 int i, nseg;
433
434 cmd = ccb->cmd;
435 nseg = scsi_dma_map(cmd);
436 BUG_ON(nseg < 0);
437 if (nseg) {
438 dst = (struct st_sgtable *)req->variable;
439
440 ccb->sg_count = nseg;
441 dst->sg_count = cpu_to_le16((u16)nseg);
442 dst->max_sg_count = cpu_to_le16(hba->host->sg_tablesize);
443 dst->sz_in_byte = cpu_to_le32(scsi_bufflen(cmd));
444
445 table = (struct st_sgitem *)(dst + 1);
446 scsi_for_each_sg(cmd, sg, nseg, i) {
447 table[i].count = cpu_to_le32((u32)sg_dma_len(sg));
448 table[i].addr = cpu_to_le64(sg_dma_address(sg));
449 table[i].ctrl = SG_CF_64B | SG_CF_HOST;
450 }
451 table[--i].ctrl |= SG_CF_EOT;
452 }
453
454 return nseg;
455 }
456
457 static int stex_ss_map_sg(struct st_hba *hba,
458 struct req_msg *req, struct st_ccb *ccb)
459 {
460 struct scsi_cmnd *cmd;
461 struct scatterlist *sg;
462 struct st_sgtable *dst;
463 struct st_ss_sgitem *table;
464 int i, nseg;
465
466 cmd = ccb->cmd;
467 nseg = scsi_dma_map(cmd);
468 BUG_ON(nseg < 0);
469 if (nseg) {
470 dst = (struct st_sgtable *)req->variable;
471
472 ccb->sg_count = nseg;
473 dst->sg_count = cpu_to_le16((u16)nseg);
474 dst->max_sg_count = cpu_to_le16(hba->host->sg_tablesize);
475 dst->sz_in_byte = cpu_to_le32(scsi_bufflen(cmd));
476
477 table = (struct st_ss_sgitem *)(dst + 1);
478 scsi_for_each_sg(cmd, sg, nseg, i) {
479 table[i].count = cpu_to_le32((u32)sg_dma_len(sg));
480 table[i].addr =
481 cpu_to_le32(sg_dma_address(sg) & 0xffffffff);
482 table[i].addr_hi =
483 cpu_to_le32((sg_dma_address(sg) >> 16) >> 16);
484 }
485 }
486
487 return nseg;
488 }
489
490 static void stex_controller_info(struct st_hba *hba, struct st_ccb *ccb)
491 {
492 struct st_frame *p;
493 size_t count = sizeof(struct st_frame);
494
495 p = hba->copy_buffer;
496 scsi_sg_copy_to_buffer(ccb->cmd, p, count);
497 memset(p->base, 0, sizeof(u32)*6);
498 *(unsigned long *)(p->base) = pci_resource_start(hba->pdev, 0);
499 p->rom_addr = 0;
500
501 p->drv_ver.major = ST_VER_MAJOR;
502 p->drv_ver.minor = ST_VER_MINOR;
503 p->drv_ver.oem = ST_OEM;
504 p->drv_ver.build = ST_BUILD_VER;
505
506 p->bus = hba->pdev->bus->number;
507 p->slot = hba->pdev->devfn;
508 p->irq_level = 0;
509 p->irq_vec = hba->pdev->irq;
510 p->id = hba->pdev->vendor << 16 | hba->pdev->device;
511 p->subid =
512 hba->pdev->subsystem_vendor << 16 | hba->pdev->subsystem_device;
513
514 scsi_sg_copy_from_buffer(ccb->cmd, p, count);
515 }
516
517 static void
518 stex_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag)
519 {
520 req->tag = cpu_to_le16(tag);
521
522 hba->ccb[tag].req = req;
523 hba->out_req_cnt++;
524
525 writel(hba->req_head, hba->mmio_base + IMR0);
526 writel(MU_INBOUND_DOORBELL_REQHEADCHANGED, hba->mmio_base + IDBL);
527 readl(hba->mmio_base + IDBL); /* flush */
528 }
529
530 static void
531 stex_ss_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag)
532 {
533 struct scsi_cmnd *cmd;
534 struct st_msg_header *msg_h;
535 dma_addr_t addr;
536
537 req->tag = cpu_to_le16(tag);
538
539 hba->ccb[tag].req = req;
540 hba->out_req_cnt++;
541
542 cmd = hba->ccb[tag].cmd;
543 msg_h = (struct st_msg_header *)req - 1;
544 if (likely(cmd)) {
545 msg_h->channel = (u8)cmd->device->channel;
546 msg_h->timeout = cpu_to_le16(cmd->request->timeout/HZ);
547 }
548 addr = hba->dma_handle + hba->req_head * hba->rq_size;
549 addr += (hba->ccb[tag].sg_count+4)/11;
550 msg_h->handle = cpu_to_le64(addr);
551
552 ++hba->req_head;
553 hba->req_head %= hba->rq_count+1;
554 if (hba->cardtype == st_P3) {
555 writel((addr >> 16) >> 16, hba->mmio_base + YH2I_REQ_HI);
556 writel(addr, hba->mmio_base + YH2I_REQ);
557 } else {
558 writel((addr >> 16) >> 16, hba->mmio_base + YH2I_REQ_HI);
559 readl(hba->mmio_base + YH2I_REQ_HI); /* flush */
560 writel(addr, hba->mmio_base + YH2I_REQ);
561 readl(hba->mmio_base + YH2I_REQ); /* flush */
562 }
563 }
564
565 static void return_abnormal_state(struct st_hba *hba, int status)
566 {
567 struct st_ccb *ccb;
568 unsigned long flags;
569 u16 tag;
570
571 spin_lock_irqsave(hba->host->host_lock, flags);
572 for (tag = 0; tag < hba->host->can_queue; tag++) {
573 ccb = &hba->ccb[tag];
574 if (ccb->req == NULL)
575 continue;
576 ccb->req = NULL;
577 if (ccb->cmd) {
578 scsi_dma_unmap(ccb->cmd);
579 ccb->cmd->result = status << 16;
580 ccb->cmd->scsi_done(ccb->cmd);
581 ccb->cmd = NULL;
582 }
583 }
584 spin_unlock_irqrestore(hba->host->host_lock, flags);
585 }
586 static int
587 stex_slave_config(struct scsi_device *sdev)
588 {
589 sdev->use_10_for_rw = 1;
590 sdev->use_10_for_ms = 1;
591 blk_queue_rq_timeout(sdev->request_queue, 60 * HZ);
592
593 return 0;
594 }
595
596 static int
597 stex_queuecommand_lck(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
598 {
599 struct st_hba *hba;
600 struct Scsi_Host *host;
601 unsigned int id, lun;
602 struct req_msg *req;
603 u16 tag;
604
605 host = cmd->device->host;
606 id = cmd->device->id;
607 lun = cmd->device->lun;
608 hba = (struct st_hba *) &host->hostdata[0];
609 if (hba->mu_status == MU_STATE_NOCONNECT) {
610 cmd->result = DID_NO_CONNECT;
611 done(cmd);
612 return 0;
613 }
614 if (unlikely(hba->mu_status != MU_STATE_STARTED))
615 return SCSI_MLQUEUE_HOST_BUSY;
616
617 switch (cmd->cmnd[0]) {
618 case MODE_SENSE_10:
619 {
620 static char ms10_caching_page[12] =
621 { 0, 0x12, 0, 0, 0, 0, 0, 0, 0x8, 0xa, 0x4, 0 };
622 unsigned char page;
623
624 page = cmd->cmnd[2] & 0x3f;
625 if (page == 0x8 || page == 0x3f) {
626 scsi_sg_copy_from_buffer(cmd, ms10_caching_page,
627 sizeof(ms10_caching_page));
628 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
629 done(cmd);
630 } else
631 stex_invalid_field(cmd, done);
632 return 0;
633 }
634 case REPORT_LUNS:
635 /*
636 * The shasta firmware does not report actual luns in the
637 * target, so fail the command to force sequential lun scan.
638 * Also, the console device does not support this command.
639 */
640 if (hba->cardtype == st_shasta || id == host->max_id - 1) {
641 stex_invalid_field(cmd, done);
642 return 0;
643 }
644 break;
645 case TEST_UNIT_READY:
646 if (id == host->max_id - 1) {
647 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
648 done(cmd);
649 return 0;
650 }
651 break;
652 case INQUIRY:
653 if (lun >= host->max_lun) {
654 cmd->result = DID_NO_CONNECT << 16;
655 done(cmd);
656 return 0;
657 }
658 if (id != host->max_id - 1)
659 break;
660 if (!lun && !cmd->device->channel &&
661 (cmd->cmnd[1] & INQUIRY_EVPD) == 0) {
662 scsi_sg_copy_from_buffer(cmd, (void *)console_inq_page,
663 sizeof(console_inq_page));
664 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
665 done(cmd);
666 } else
667 stex_invalid_field(cmd, done);
668 return 0;
669 case PASSTHRU_CMD:
670 if (cmd->cmnd[1] == PASSTHRU_GET_DRVVER) {
671 struct st_drvver ver;
672 size_t cp_len = sizeof(ver);
673
674 ver.major = ST_VER_MAJOR;
675 ver.minor = ST_VER_MINOR;
676 ver.oem = ST_OEM;
677 ver.build = ST_BUILD_VER;
678 ver.signature[0] = PASSTHRU_SIGNATURE;
679 ver.console_id = host->max_id - 1;
680 ver.host_no = hba->host->host_no;
681 cp_len = scsi_sg_copy_from_buffer(cmd, &ver, cp_len);
682 cmd->result = sizeof(ver) == cp_len ?
683 DID_OK << 16 | COMMAND_COMPLETE << 8 :
684 DID_ERROR << 16 | COMMAND_COMPLETE << 8;
685 done(cmd);
686 return 0;
687 }
688 break;
689 default:
690 break;
691 }
692
693 cmd->scsi_done = done;
694
695 tag = cmd->request->tag;
696
697 if (unlikely(tag >= host->can_queue))
698 return SCSI_MLQUEUE_HOST_BUSY;
699
700 req = hba->alloc_rq(hba);
701
702 req->lun = lun;
703 req->target = id;
704
705 /* cdb */
706 memcpy(req->cdb, cmd->cmnd, STEX_CDB_LENGTH);
707
708 if (cmd->sc_data_direction == DMA_FROM_DEVICE)
709 req->data_dir = MSG_DATA_DIR_IN;
710 else if (cmd->sc_data_direction == DMA_TO_DEVICE)
711 req->data_dir = MSG_DATA_DIR_OUT;
712 else
713 req->data_dir = MSG_DATA_DIR_ND;
714
715 hba->ccb[tag].cmd = cmd;
716 hba->ccb[tag].sense_bufflen = SCSI_SENSE_BUFFERSIZE;
717 hba->ccb[tag].sense_buffer = cmd->sense_buffer;
718
719 if (!hba->map_sg(hba, req, &hba->ccb[tag])) {
720 hba->ccb[tag].sg_count = 0;
721 memset(&req->variable[0], 0, 8);
722 }
723
724 hba->send(hba, req, tag);
725 return 0;
726 }
727
728 static DEF_SCSI_QCMD(stex_queuecommand)
729
730 static void stex_scsi_done(struct st_ccb *ccb)
731 {
732 struct scsi_cmnd *cmd = ccb->cmd;
733 int result;
734
735 if (ccb->srb_status == SRB_STATUS_SUCCESS || ccb->srb_status == 0) {
736 result = ccb->scsi_status;
737 switch (ccb->scsi_status) {
738 case SAM_STAT_GOOD:
739 result |= DID_OK << 16 | COMMAND_COMPLETE << 8;
740 break;
741 case SAM_STAT_CHECK_CONDITION:
742 result |= DRIVER_SENSE << 24;
743 break;
744 case SAM_STAT_BUSY:
745 result |= DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
746 break;
747 default:
748 result |= DID_ERROR << 16 | COMMAND_COMPLETE << 8;
749 break;
750 }
751 }
752 else if (ccb->srb_status & SRB_SEE_SENSE)
753 result = DRIVER_SENSE << 24 | SAM_STAT_CHECK_CONDITION;
754 else switch (ccb->srb_status) {
755 case SRB_STATUS_SELECTION_TIMEOUT:
756 result = DID_NO_CONNECT << 16 | COMMAND_COMPLETE << 8;
757 break;
758 case SRB_STATUS_BUSY:
759 result = DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
760 break;
761 case SRB_STATUS_INVALID_REQUEST:
762 case SRB_STATUS_ERROR:
763 default:
764 result = DID_ERROR << 16 | COMMAND_COMPLETE << 8;
765 break;
766 }
767
768 cmd->result = result;
769 cmd->scsi_done(cmd);
770 }
771
772 static void stex_copy_data(struct st_ccb *ccb,
773 struct status_msg *resp, unsigned int variable)
774 {
775 if (resp->scsi_status != SAM_STAT_GOOD) {
776 if (ccb->sense_buffer != NULL)
777 memcpy(ccb->sense_buffer, resp->variable,
778 min(variable, ccb->sense_bufflen));
779 return;
780 }
781
782 if (ccb->cmd == NULL)
783 return;
784 scsi_sg_copy_from_buffer(ccb->cmd, resp->variable, variable);
785 }
786
787 static void stex_check_cmd(struct st_hba *hba,
788 struct st_ccb *ccb, struct status_msg *resp)
789 {
790 if (ccb->cmd->cmnd[0] == MGT_CMD &&
791 resp->scsi_status != SAM_STAT_CHECK_CONDITION)
792 scsi_set_resid(ccb->cmd, scsi_bufflen(ccb->cmd) -
793 le32_to_cpu(*(__le32 *)&resp->variable[0]));
794 }
795
796 static void stex_mu_intr(struct st_hba *hba, u32 doorbell)
797 {
798 void __iomem *base = hba->mmio_base;
799 struct status_msg *resp;
800 struct st_ccb *ccb;
801 unsigned int size;
802 u16 tag;
803
804 if (unlikely(!(doorbell & MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED)))
805 return;
806
807 /* status payloads */
808 hba->status_head = readl(base + OMR1);
809 if (unlikely(hba->status_head > hba->sts_count)) {
810 printk(KERN_WARNING DRV_NAME "(%s): invalid status head\n",
811 pci_name(hba->pdev));
812 return;
813 }
814
815 /*
816 * it's not a valid status payload if:
817 * 1. there are no pending requests(e.g. during init stage)
818 * 2. there are some pending requests, but the controller is in
819 * reset status, and its type is not st_yosemite
820 * firmware of st_yosemite in reset status will return pending requests
821 * to driver, so we allow it to pass
822 */
823 if (unlikely(hba->out_req_cnt <= 0 ||
824 (hba->mu_status == MU_STATE_RESETTING &&
825 hba->cardtype != st_yosemite))) {
826 hba->status_tail = hba->status_head;
827 goto update_status;
828 }
829
830 while (hba->status_tail != hba->status_head) {
831 resp = stex_get_status(hba);
832 tag = le16_to_cpu(resp->tag);
833 if (unlikely(tag >= hba->host->can_queue)) {
834 printk(KERN_WARNING DRV_NAME
835 "(%s): invalid tag\n", pci_name(hba->pdev));
836 continue;
837 }
838
839 hba->out_req_cnt--;
840 ccb = &hba->ccb[tag];
841 if (unlikely(hba->wait_ccb == ccb))
842 hba->wait_ccb = NULL;
843 if (unlikely(ccb->req == NULL)) {
844 printk(KERN_WARNING DRV_NAME
845 "(%s): lagging req\n", pci_name(hba->pdev));
846 continue;
847 }
848
849 size = resp->payload_sz * sizeof(u32); /* payload size */
850 if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN ||
851 size > sizeof(*resp))) {
852 printk(KERN_WARNING DRV_NAME "(%s): bad status size\n",
853 pci_name(hba->pdev));
854 } else {
855 size -= sizeof(*resp) - STATUS_VAR_LEN; /* copy size */
856 if (size)
857 stex_copy_data(ccb, resp, size);
858 }
859
860 ccb->req = NULL;
861 ccb->srb_status = resp->srb_status;
862 ccb->scsi_status = resp->scsi_status;
863
864 if (likely(ccb->cmd != NULL)) {
865 if (hba->cardtype == st_yosemite)
866 stex_check_cmd(hba, ccb, resp);
867
868 if (unlikely(ccb->cmd->cmnd[0] == PASSTHRU_CMD &&
869 ccb->cmd->cmnd[1] == PASSTHRU_GET_ADAPTER))
870 stex_controller_info(hba, ccb);
871
872 scsi_dma_unmap(ccb->cmd);
873 stex_scsi_done(ccb);
874 } else
875 ccb->req_type = 0;
876 }
877
878 update_status:
879 writel(hba->status_head, base + IMR1);
880 readl(base + IMR1); /* flush */
881 }
882
883 static irqreturn_t stex_intr(int irq, void *__hba)
884 {
885 struct st_hba *hba = __hba;
886 void __iomem *base = hba->mmio_base;
887 u32 data;
888 unsigned long flags;
889
890 spin_lock_irqsave(hba->host->host_lock, flags);
891
892 data = readl(base + ODBL);
893
894 if (data && data != 0xffffffff) {
895 /* clear the interrupt */
896 writel(data, base + ODBL);
897 readl(base + ODBL); /* flush */
898 stex_mu_intr(hba, data);
899 spin_unlock_irqrestore(hba->host->host_lock, flags);
900 if (unlikely(data & MU_OUTBOUND_DOORBELL_REQUEST_RESET &&
901 hba->cardtype == st_shasta))
902 queue_work(hba->work_q, &hba->reset_work);
903 return IRQ_HANDLED;
904 }
905
906 spin_unlock_irqrestore(hba->host->host_lock, flags);
907
908 return IRQ_NONE;
909 }
910
911 static void stex_ss_mu_intr(struct st_hba *hba)
912 {
913 struct status_msg *resp;
914 struct st_ccb *ccb;
915 __le32 *scratch;
916 unsigned int size;
917 int count = 0;
918 u32 value;
919 u16 tag;
920
921 if (unlikely(hba->out_req_cnt <= 0 ||
922 hba->mu_status == MU_STATE_RESETTING))
923 return;
924
925 while (count < hba->sts_count) {
926 scratch = hba->scratch + hba->status_tail;
927 value = le32_to_cpu(*scratch);
928 if (unlikely(!(value & SS_STS_NORMAL)))
929 return;
930
931 resp = hba->status_buffer + hba->status_tail;
932 *scratch = 0;
933 ++count;
934 ++hba->status_tail;
935 hba->status_tail %= hba->sts_count+1;
936
937 tag = (u16)value;
938 if (unlikely(tag >= hba->host->can_queue)) {
939 printk(KERN_WARNING DRV_NAME
940 "(%s): invalid tag\n", pci_name(hba->pdev));
941 continue;
942 }
943
944 hba->out_req_cnt--;
945 ccb = &hba->ccb[tag];
946 if (unlikely(hba->wait_ccb == ccb))
947 hba->wait_ccb = NULL;
948 if (unlikely(ccb->req == NULL)) {
949 printk(KERN_WARNING DRV_NAME
950 "(%s): lagging req\n", pci_name(hba->pdev));
951 continue;
952 }
953
954 ccb->req = NULL;
955 if (likely(value & SS_STS_DONE)) { /* normal case */
956 ccb->srb_status = SRB_STATUS_SUCCESS;
957 ccb->scsi_status = SAM_STAT_GOOD;
958 } else {
959 ccb->srb_status = resp->srb_status;
960 ccb->scsi_status = resp->scsi_status;
961 size = resp->payload_sz * sizeof(u32);
962 if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN ||
963 size > sizeof(*resp))) {
964 printk(KERN_WARNING DRV_NAME
965 "(%s): bad status size\n",
966 pci_name(hba->pdev));
967 } else {
968 size -= sizeof(*resp) - STATUS_VAR_LEN;
969 if (size)
970 stex_copy_data(ccb, resp, size);
971 }
972 if (likely(ccb->cmd != NULL))
973 stex_check_cmd(hba, ccb, resp);
974 }
975
976 if (likely(ccb->cmd != NULL)) {
977 scsi_dma_unmap(ccb->cmd);
978 stex_scsi_done(ccb);
979 } else
980 ccb->req_type = 0;
981 }
982 }
983
984 static irqreturn_t stex_ss_intr(int irq, void *__hba)
985 {
986 struct st_hba *hba = __hba;
987 void __iomem *base = hba->mmio_base;
988 u32 data;
989 unsigned long flags;
990
991 spin_lock_irqsave(hba->host->host_lock, flags);
992
993 if (hba->cardtype == st_yel) {
994 data = readl(base + YI2H_INT);
995 if (data && data != 0xffffffff) {
996 /* clear the interrupt */
997 writel(data, base + YI2H_INT_C);
998 stex_ss_mu_intr(hba);
999 spin_unlock_irqrestore(hba->host->host_lock, flags);
1000 if (unlikely(data & SS_I2H_REQUEST_RESET))
1001 queue_work(hba->work_q, &hba->reset_work);
1002 return IRQ_HANDLED;
1003 }
1004 } else {
1005 data = readl(base + PSCRATCH4);
1006 if (data != 0xffffffff) {
1007 if (data != 0) {
1008 /* clear the interrupt */
1009 writel(data, base + PSCRATCH1);
1010 writel((1 << 22), base + YH2I_INT);
1011 }
1012 stex_ss_mu_intr(hba);
1013 spin_unlock_irqrestore(hba->host->host_lock, flags);
1014 if (unlikely(data & SS_I2H_REQUEST_RESET))
1015 queue_work(hba->work_q, &hba->reset_work);
1016 return IRQ_HANDLED;
1017 }
1018 }
1019
1020 spin_unlock_irqrestore(hba->host->host_lock, flags);
1021
1022 return IRQ_NONE;
1023 }
1024
1025 static int stex_common_handshake(struct st_hba *hba)
1026 {
1027 void __iomem *base = hba->mmio_base;
1028 struct handshake_frame *h;
1029 dma_addr_t status_phys;
1030 u32 data;
1031 unsigned long before;
1032
1033 if (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
1034 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
1035 readl(base + IDBL);
1036 before = jiffies;
1037 while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
1038 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
1039 printk(KERN_ERR DRV_NAME
1040 "(%s): no handshake signature\n",
1041 pci_name(hba->pdev));
1042 return -1;
1043 }
1044 rmb();
1045 msleep(1);
1046 }
1047 }
1048
1049 udelay(10);
1050
1051 data = readl(base + OMR1);
1052 if ((data & 0xffff0000) == MU_HANDSHAKE_SIGNATURE_HALF) {
1053 data &= 0x0000ffff;
1054 if (hba->host->can_queue > data) {
1055 hba->host->can_queue = data;
1056 hba->host->cmd_per_lun = data;
1057 }
1058 }
1059
1060 h = (struct handshake_frame *)hba->status_buffer;
1061 h->rb_phy = cpu_to_le64(hba->dma_handle);
1062 h->req_sz = cpu_to_le16(hba->rq_size);
1063 h->req_cnt = cpu_to_le16(hba->rq_count+1);
1064 h->status_sz = cpu_to_le16(sizeof(struct status_msg));
1065 h->status_cnt = cpu_to_le16(hba->sts_count+1);
1066 h->hosttime = cpu_to_le64(ktime_get_real_seconds());
1067 h->partner_type = HMU_PARTNER_TYPE;
1068 if (hba->extra_offset) {
1069 h->extra_offset = cpu_to_le32(hba->extra_offset);
1070 h->extra_size = cpu_to_le32(hba->dma_size - hba->extra_offset);
1071 } else
1072 h->extra_offset = h->extra_size = 0;
1073
1074 status_phys = hba->dma_handle + (hba->rq_count+1) * hba->rq_size;
1075 writel(status_phys, base + IMR0);
1076 readl(base + IMR0);
1077 writel((status_phys >> 16) >> 16, base + IMR1);
1078 readl(base + IMR1);
1079
1080 writel((status_phys >> 16) >> 16, base + OMR0); /* old fw compatible */
1081 readl(base + OMR0);
1082 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
1083 readl(base + IDBL); /* flush */
1084
1085 udelay(10);
1086 before = jiffies;
1087 while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
1088 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
1089 printk(KERN_ERR DRV_NAME
1090 "(%s): no signature after handshake frame\n",
1091 pci_name(hba->pdev));
1092 return -1;
1093 }
1094 rmb();
1095 msleep(1);
1096 }
1097
1098 writel(0, base + IMR0);
1099 readl(base + IMR0);
1100 writel(0, base + OMR0);
1101 readl(base + OMR0);
1102 writel(0, base + IMR1);
1103 readl(base + IMR1);
1104 writel(0, base + OMR1);
1105 readl(base + OMR1); /* flush */
1106 return 0;
1107 }
1108
1109 static int stex_ss_handshake(struct st_hba *hba)
1110 {
1111 void __iomem *base = hba->mmio_base;
1112 struct st_msg_header *msg_h;
1113 struct handshake_frame *h;
1114 __le32 *scratch;
1115 u32 data, scratch_size, mailboxdata, operationaldata;
1116 unsigned long before;
1117 int ret = 0;
1118
1119 before = jiffies;
1120
1121 if (hba->cardtype == st_yel) {
1122 operationaldata = readl(base + YIOA_STATUS);
1123 while (operationaldata != SS_MU_OPERATIONAL) {
1124 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
1125 printk(KERN_ERR DRV_NAME
1126 "(%s): firmware not operational\n",
1127 pci_name(hba->pdev));
1128 return -1;
1129 }
1130 msleep(1);
1131 operationaldata = readl(base + YIOA_STATUS);
1132 }
1133 } else {
1134 operationaldata = readl(base + PSCRATCH3);
1135 while (operationaldata != SS_MU_OPERATIONAL) {
1136 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
1137 printk(KERN_ERR DRV_NAME
1138 "(%s): firmware not operational\n",
1139 pci_name(hba->pdev));
1140 return -1;
1141 }
1142 msleep(1);
1143 operationaldata = readl(base + PSCRATCH3);
1144 }
1145 }
1146
1147 msg_h = (struct st_msg_header *)hba->dma_mem;
1148 msg_h->handle = cpu_to_le64(hba->dma_handle);
1149 msg_h->flag = SS_HEAD_HANDSHAKE;
1150
1151 h = (struct handshake_frame *)(msg_h + 1);
1152 h->rb_phy = cpu_to_le64(hba->dma_handle);
1153 h->req_sz = cpu_to_le16(hba->rq_size);
1154 h->req_cnt = cpu_to_le16(hba->rq_count+1);
1155 h->status_sz = cpu_to_le16(sizeof(struct status_msg));
1156 h->status_cnt = cpu_to_le16(hba->sts_count+1);
1157 h->hosttime = cpu_to_le64(ktime_get_real_seconds());
1158 h->partner_type = HMU_PARTNER_TYPE;
1159 h->extra_offset = h->extra_size = 0;
1160 scratch_size = (hba->sts_count+1)*sizeof(u32);
1161 h->scratch_size = cpu_to_le32(scratch_size);
1162
1163 if (hba->cardtype == st_yel) {
1164 data = readl(base + YINT_EN);
1165 data &= ~4;
1166 writel(data, base + YINT_EN);
1167 writel((hba->dma_handle >> 16) >> 16, base + YH2I_REQ_HI);
1168 readl(base + YH2I_REQ_HI);
1169 writel(hba->dma_handle, base + YH2I_REQ);
1170 readl(base + YH2I_REQ); /* flush */
1171 } else {
1172 data = readl(base + YINT_EN);
1173 data &= ~(1 << 0);
1174 data &= ~(1 << 2);
1175 writel(data, base + YINT_EN);
1176 if (hba->msi_lock == 0) {
1177 /* P3 MSI Register cannot access twice */
1178 writel((1 << 6), base + YH2I_INT);
1179 hba->msi_lock = 1;
1180 }
1181 writel((hba->dma_handle >> 16) >> 16, base + YH2I_REQ_HI);
1182 writel(hba->dma_handle, base + YH2I_REQ);
1183 }
1184
1185 before = jiffies;
1186 scratch = hba->scratch;
1187 if (hba->cardtype == st_yel) {
1188 while (!(le32_to_cpu(*scratch) & SS_STS_HANDSHAKE)) {
1189 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
1190 printk(KERN_ERR DRV_NAME
1191 "(%s): no signature after handshake frame\n",
1192 pci_name(hba->pdev));
1193 ret = -1;
1194 break;
1195 }
1196 rmb();
1197 msleep(1);
1198 }
1199 } else {
1200 mailboxdata = readl(base + MAILBOX_BASE + MAILBOX_HNDSHK_STS);
1201 while (mailboxdata != SS_STS_HANDSHAKE) {
1202 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
1203 printk(KERN_ERR DRV_NAME
1204 "(%s): no signature after handshake frame\n",
1205 pci_name(hba->pdev));
1206 ret = -1;
1207 break;
1208 }
1209 rmb();
1210 msleep(1);
1211 mailboxdata = readl(base + MAILBOX_BASE + MAILBOX_HNDSHK_STS);
1212 }
1213 }
1214 memset(scratch, 0, scratch_size);
1215 msg_h->flag = 0;
1216
1217 return ret;
1218 }
1219
1220 static int stex_handshake(struct st_hba *hba)
1221 {
1222 int err;
1223 unsigned long flags;
1224 unsigned int mu_status;
1225
1226 if (hba->cardtype == st_yel || hba->cardtype == st_P3)
1227 err = stex_ss_handshake(hba);
1228 else
1229 err = stex_common_handshake(hba);
1230 spin_lock_irqsave(hba->host->host_lock, flags);
1231 mu_status = hba->mu_status;
1232 if (err == 0) {
1233 hba->req_head = 0;
1234 hba->req_tail = 0;
1235 hba->status_head = 0;
1236 hba->status_tail = 0;
1237 hba->out_req_cnt = 0;
1238 hba->mu_status = MU_STATE_STARTED;
1239 } else
1240 hba->mu_status = MU_STATE_FAILED;
1241 if (mu_status == MU_STATE_RESETTING)
1242 wake_up_all(&hba->reset_waitq);
1243 spin_unlock_irqrestore(hba->host->host_lock, flags);
1244 return err;
1245 }
1246
1247 static int stex_abort(struct scsi_cmnd *cmd)
1248 {
1249 struct Scsi_Host *host = cmd->device->host;
1250 struct st_hba *hba = (struct st_hba *)host->hostdata;
1251 u16 tag = cmd->request->tag;
1252 void __iomem *base;
1253 u32 data;
1254 int result = SUCCESS;
1255 unsigned long flags;
1256
1257 scmd_printk(KERN_INFO, cmd, "aborting command\n");
1258
1259 base = hba->mmio_base;
1260 spin_lock_irqsave(host->host_lock, flags);
1261 if (tag < host->can_queue &&
1262 hba->ccb[tag].req && hba->ccb[tag].cmd == cmd)
1263 hba->wait_ccb = &hba->ccb[tag];
1264 else
1265 goto out;
1266
1267 if (hba->cardtype == st_yel) {
1268 data = readl(base + YI2H_INT);
1269 if (data == 0 || data == 0xffffffff)
1270 goto fail_out;
1271
1272 writel(data, base + YI2H_INT_C);
1273 stex_ss_mu_intr(hba);
1274 } else if (hba->cardtype == st_P3) {
1275 data = readl(base + PSCRATCH4);
1276 if (data == 0xffffffff)
1277 goto fail_out;
1278 if (data != 0) {
1279 writel(data, base + PSCRATCH1);
1280 writel((1 << 22), base + YH2I_INT);
1281 }
1282 stex_ss_mu_intr(hba);
1283 } else {
1284 data = readl(base + ODBL);
1285 if (data == 0 || data == 0xffffffff)
1286 goto fail_out;
1287
1288 writel(data, base + ODBL);
1289 readl(base + ODBL); /* flush */
1290 stex_mu_intr(hba, data);
1291 }
1292 if (hba->wait_ccb == NULL) {
1293 printk(KERN_WARNING DRV_NAME
1294 "(%s): lost interrupt\n", pci_name(hba->pdev));
1295 goto out;
1296 }
1297
1298 fail_out:
1299 scsi_dma_unmap(cmd);
1300 hba->wait_ccb->req = NULL; /* nullify the req's future return */
1301 hba->wait_ccb = NULL;
1302 result = FAILED;
1303 out:
1304 spin_unlock_irqrestore(host->host_lock, flags);
1305 return result;
1306 }
1307
1308 static void stex_hard_reset(struct st_hba *hba)
1309 {
1310 struct pci_bus *bus;
1311 int i;
1312 u16 pci_cmd;
1313 u8 pci_bctl;
1314
1315 for (i = 0; i < 16; i++)
1316 pci_read_config_dword(hba->pdev, i * 4,
1317 &hba->pdev->saved_config_space[i]);
1318
1319 /* Reset secondary bus. Our controller(MU/ATU) is the only device on
1320 secondary bus. Consult Intel 80331/3 developer's manual for detail */
1321 bus = hba->pdev->bus;
1322 pci_read_config_byte(bus->self, PCI_BRIDGE_CONTROL, &pci_bctl);
1323 pci_bctl |= PCI_BRIDGE_CTL_BUS_RESET;
1324 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
1325
1326 /*
1327 * 1 ms may be enough for 8-port controllers. But 16-port controllers
1328 * require more time to finish bus reset. Use 100 ms here for safety
1329 */
1330 msleep(100);
1331 pci_bctl &= ~PCI_BRIDGE_CTL_BUS_RESET;
1332 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
1333
1334 for (i = 0; i < MU_HARD_RESET_WAIT; i++) {
1335 pci_read_config_word(hba->pdev, PCI_COMMAND, &pci_cmd);
1336 if (pci_cmd != 0xffff && (pci_cmd & PCI_COMMAND_MASTER))
1337 break;
1338 msleep(1);
1339 }
1340
1341 ssleep(5);
1342 for (i = 0; i < 16; i++)
1343 pci_write_config_dword(hba->pdev, i * 4,
1344 hba->pdev->saved_config_space[i]);
1345 }
1346
1347 static int stex_yos_reset(struct st_hba *hba)
1348 {
1349 void __iomem *base;
1350 unsigned long flags, before;
1351 int ret = 0;
1352
1353 base = hba->mmio_base;
1354 writel(MU_INBOUND_DOORBELL_RESET, base + IDBL);
1355 readl(base + IDBL); /* flush */
1356 before = jiffies;
1357 while (hba->out_req_cnt > 0) {
1358 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) {
1359 printk(KERN_WARNING DRV_NAME
1360 "(%s): reset timeout\n", pci_name(hba->pdev));
1361 ret = -1;
1362 break;
1363 }
1364 msleep(1);
1365 }
1366
1367 spin_lock_irqsave(hba->host->host_lock, flags);
1368 if (ret == -1)
1369 hba->mu_status = MU_STATE_FAILED;
1370 else
1371 hba->mu_status = MU_STATE_STARTED;
1372 wake_up_all(&hba->reset_waitq);
1373 spin_unlock_irqrestore(hba->host->host_lock, flags);
1374
1375 return ret;
1376 }
1377
1378 static void stex_ss_reset(struct st_hba *hba)
1379 {
1380 writel(SS_H2I_INT_RESET, hba->mmio_base + YH2I_INT);
1381 readl(hba->mmio_base + YH2I_INT);
1382 ssleep(5);
1383 }
1384
1385 static void stex_p3_reset(struct st_hba *hba)
1386 {
1387 writel(SS_H2I_INT_RESET, hba->mmio_base + YH2I_INT);
1388 ssleep(5);
1389 }
1390
1391 static int stex_do_reset(struct st_hba *hba)
1392 {
1393 unsigned long flags;
1394 unsigned int mu_status = MU_STATE_RESETTING;
1395
1396 spin_lock_irqsave(hba->host->host_lock, flags);
1397 if (hba->mu_status == MU_STATE_STARTING) {
1398 spin_unlock_irqrestore(hba->host->host_lock, flags);
1399 printk(KERN_INFO DRV_NAME "(%s): request reset during init\n",
1400 pci_name(hba->pdev));
1401 return 0;
1402 }
1403 while (hba->mu_status == MU_STATE_RESETTING) {
1404 spin_unlock_irqrestore(hba->host->host_lock, flags);
1405 wait_event_timeout(hba->reset_waitq,
1406 hba->mu_status != MU_STATE_RESETTING,
1407 MU_MAX_DELAY * HZ);
1408 spin_lock_irqsave(hba->host->host_lock, flags);
1409 mu_status = hba->mu_status;
1410 }
1411
1412 if (mu_status != MU_STATE_RESETTING) {
1413 spin_unlock_irqrestore(hba->host->host_lock, flags);
1414 return (mu_status == MU_STATE_STARTED) ? 0 : -1;
1415 }
1416
1417 hba->mu_status = MU_STATE_RESETTING;
1418 spin_unlock_irqrestore(hba->host->host_lock, flags);
1419
1420 if (hba->cardtype == st_yosemite)
1421 return stex_yos_reset(hba);
1422
1423 if (hba->cardtype == st_shasta)
1424 stex_hard_reset(hba);
1425 else if (hba->cardtype == st_yel)
1426 stex_ss_reset(hba);
1427 else if (hba->cardtype == st_P3)
1428 stex_p3_reset(hba);
1429
1430 return_abnormal_state(hba, DID_RESET);
1431
1432 if (stex_handshake(hba) == 0)
1433 return 0;
1434
1435 printk(KERN_WARNING DRV_NAME "(%s): resetting: handshake failed\n",
1436 pci_name(hba->pdev));
1437 return -1;
1438 }
1439
1440 static int stex_reset(struct scsi_cmnd *cmd)
1441 {
1442 struct st_hba *hba;
1443
1444 hba = (struct st_hba *) &cmd->device->host->hostdata[0];
1445
1446 shost_printk(KERN_INFO, cmd->device->host,
1447 "resetting host\n");
1448
1449 return stex_do_reset(hba) ? FAILED : SUCCESS;
1450 }
1451
1452 static void stex_reset_work(struct work_struct *work)
1453 {
1454 struct st_hba *hba = container_of(work, struct st_hba, reset_work);
1455
1456 stex_do_reset(hba);
1457 }
1458
1459 static int stex_biosparam(struct scsi_device *sdev,
1460 struct block_device *bdev, sector_t capacity, int geom[])
1461 {
1462 int heads = 255, sectors = 63;
1463
1464 if (capacity < 0x200000) {
1465 heads = 64;
1466 sectors = 32;
1467 }
1468
1469 sector_div(capacity, heads * sectors);
1470
1471 geom[0] = heads;
1472 geom[1] = sectors;
1473 geom[2] = capacity;
1474
1475 return 0;
1476 }
1477
1478 static struct scsi_host_template driver_template = {
1479 .module = THIS_MODULE,
1480 .name = DRV_NAME,
1481 .proc_name = DRV_NAME,
1482 .bios_param = stex_biosparam,
1483 .queuecommand = stex_queuecommand,
1484 .slave_configure = stex_slave_config,
1485 .eh_abort_handler = stex_abort,
1486 .eh_host_reset_handler = stex_reset,
1487 .this_id = -1,
1488 .dma_boundary = PAGE_SIZE - 1,
1489 };
1490
1491 static struct pci_device_id stex_pci_tbl[] = {
1492 /* st_shasta */
1493 { 0x105a, 0x8350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1494 st_shasta }, /* SuperTrak EX8350/8300/16350/16300 */
1495 { 0x105a, 0xc350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1496 st_shasta }, /* SuperTrak EX12350 */
1497 { 0x105a, 0x4302, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1498 st_shasta }, /* SuperTrak EX4350 */
1499 { 0x105a, 0xe350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1500 st_shasta }, /* SuperTrak EX24350 */
1501
1502 /* st_vsc */
1503 { 0x105a, 0x7250, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_vsc },
1504
1505 /* st_yosemite */
1506 { 0x105a, 0x8650, 0x105a, PCI_ANY_ID, 0, 0, st_yosemite },
1507
1508 /* st_seq */
1509 { 0x105a, 0x3360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_seq },
1510
1511 /* st_yel */
1512 { 0x105a, 0x8650, 0x1033, PCI_ANY_ID, 0, 0, st_yel },
1513 { 0x105a, 0x8760, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_yel },
1514
1515 /* st_P3, pluto */
1516 { PCI_VENDOR_ID_PROMISE, 0x8870, PCI_VENDOR_ID_PROMISE,
1517 0x8870, 0, 0, st_P3 },
1518 /* st_P3, p3 */
1519 { PCI_VENDOR_ID_PROMISE, 0x8870, PCI_VENDOR_ID_PROMISE,
1520 0x4300, 0, 0, st_P3 },
1521
1522 /* st_P3, SymplyStor4E */
1523 { PCI_VENDOR_ID_PROMISE, 0x8871, PCI_VENDOR_ID_PROMISE,
1524 0x4311, 0, 0, st_P3 },
1525 /* st_P3, SymplyStor8E */
1526 { PCI_VENDOR_ID_PROMISE, 0x8871, PCI_VENDOR_ID_PROMISE,
1527 0x4312, 0, 0, st_P3 },
1528 /* st_P3, SymplyStor4 */
1529 { PCI_VENDOR_ID_PROMISE, 0x8871, PCI_VENDOR_ID_PROMISE,
1530 0x4321, 0, 0, st_P3 },
1531 /* st_P3, SymplyStor8 */
1532 { PCI_VENDOR_ID_PROMISE, 0x8871, PCI_VENDOR_ID_PROMISE,
1533 0x4322, 0, 0, st_P3 },
1534 { } /* terminate list */
1535 };
1536
1537 static struct st_card_info stex_card_info[] = {
1538 /* st_shasta */
1539 {
1540 .max_id = 17,
1541 .max_lun = 8,
1542 .max_channel = 0,
1543 .rq_count = 32,
1544 .rq_size = 1048,
1545 .sts_count = 32,
1546 .alloc_rq = stex_alloc_req,
1547 .map_sg = stex_map_sg,
1548 .send = stex_send_cmd,
1549 },
1550
1551 /* st_vsc */
1552 {
1553 .max_id = 129,
1554 .max_lun = 1,
1555 .max_channel = 0,
1556 .rq_count = 32,
1557 .rq_size = 1048,
1558 .sts_count = 32,
1559 .alloc_rq = stex_alloc_req,
1560 .map_sg = stex_map_sg,
1561 .send = stex_send_cmd,
1562 },
1563
1564 /* st_yosemite */
1565 {
1566 .max_id = 2,
1567 .max_lun = 256,
1568 .max_channel = 0,
1569 .rq_count = 256,
1570 .rq_size = 1048,
1571 .sts_count = 256,
1572 .alloc_rq = stex_alloc_req,
1573 .map_sg = stex_map_sg,
1574 .send = stex_send_cmd,
1575 },
1576
1577 /* st_seq */
1578 {
1579 .max_id = 129,
1580 .max_lun = 1,
1581 .max_channel = 0,
1582 .rq_count = 32,
1583 .rq_size = 1048,
1584 .sts_count = 32,
1585 .alloc_rq = stex_alloc_req,
1586 .map_sg = stex_map_sg,
1587 .send = stex_send_cmd,
1588 },
1589
1590 /* st_yel */
1591 {
1592 .max_id = 129,
1593 .max_lun = 256,
1594 .max_channel = 3,
1595 .rq_count = 801,
1596 .rq_size = 512,
1597 .sts_count = 801,
1598 .alloc_rq = stex_ss_alloc_req,
1599 .map_sg = stex_ss_map_sg,
1600 .send = stex_ss_send_cmd,
1601 },
1602
1603 /* st_P3 */
1604 {
1605 .max_id = 129,
1606 .max_lun = 256,
1607 .max_channel = 0,
1608 .rq_count = 801,
1609 .rq_size = 512,
1610 .sts_count = 801,
1611 .alloc_rq = stex_ss_alloc_req,
1612 .map_sg = stex_ss_map_sg,
1613 .send = stex_ss_send_cmd,
1614 },
1615 };
1616
1617 static int stex_request_irq(struct st_hba *hba)
1618 {
1619 struct pci_dev *pdev = hba->pdev;
1620 int status;
1621
1622 if (msi || hba->cardtype == st_P3) {
1623 status = pci_enable_msi(pdev);
1624 if (status != 0)
1625 printk(KERN_ERR DRV_NAME
1626 "(%s): error %d setting up MSI\n",
1627 pci_name(pdev), status);
1628 else
1629 hba->msi_enabled = 1;
1630 } else
1631 hba->msi_enabled = 0;
1632
1633 status = request_irq(pdev->irq,
1634 (hba->cardtype == st_yel || hba->cardtype == st_P3) ?
1635 stex_ss_intr : stex_intr, IRQF_SHARED, DRV_NAME, hba);
1636
1637 if (status != 0) {
1638 if (hba->msi_enabled)
1639 pci_disable_msi(pdev);
1640 }
1641 return status;
1642 }
1643
1644 static void stex_free_irq(struct st_hba *hba)
1645 {
1646 struct pci_dev *pdev = hba->pdev;
1647
1648 free_irq(pdev->irq, hba);
1649 if (hba->msi_enabled)
1650 pci_disable_msi(pdev);
1651 }
1652
1653 static int stex_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1654 {
1655 struct st_hba *hba;
1656 struct Scsi_Host *host;
1657 const struct st_card_info *ci = NULL;
1658 u32 sts_offset, cp_offset, scratch_offset;
1659 int err;
1660
1661 err = pci_enable_device(pdev);
1662 if (err)
1663 return err;
1664
1665 pci_set_master(pdev);
1666
1667 S6flag = 0;
1668 register_reboot_notifier(&stex_notifier);
1669
1670 host = scsi_host_alloc(&driver_template, sizeof(struct st_hba));
1671
1672 if (!host) {
1673 printk(KERN_ERR DRV_NAME "(%s): scsi_host_alloc failed\n",
1674 pci_name(pdev));
1675 err = -ENOMEM;
1676 goto out_disable;
1677 }
1678
1679 hba = (struct st_hba *)host->hostdata;
1680 memset(hba, 0, sizeof(struct st_hba));
1681
1682 err = pci_request_regions(pdev, DRV_NAME);
1683 if (err < 0) {
1684 printk(KERN_ERR DRV_NAME "(%s): request regions failed\n",
1685 pci_name(pdev));
1686 goto out_scsi_host_put;
1687 }
1688
1689 hba->mmio_base = pci_ioremap_bar(pdev, 0);
1690 if ( !hba->mmio_base) {
1691 printk(KERN_ERR DRV_NAME "(%s): memory map failed\n",
1692 pci_name(pdev));
1693 err = -ENOMEM;
1694 goto out_release_regions;
1695 }
1696
1697 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
1698 if (err)
1699 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
1700 if (err) {
1701 printk(KERN_ERR DRV_NAME "(%s): set dma mask failed\n",
1702 pci_name(pdev));
1703 goto out_iounmap;
1704 }
1705
1706 hba->cardtype = (unsigned int) id->driver_data;
1707 ci = &stex_card_info[hba->cardtype];
1708 switch (id->subdevice) {
1709 case 0x4221:
1710 case 0x4222:
1711 case 0x4223:
1712 case 0x4224:
1713 case 0x4225:
1714 case 0x4226:
1715 case 0x4227:
1716 case 0x4261:
1717 case 0x4262:
1718 case 0x4263:
1719 case 0x4264:
1720 case 0x4265:
1721 break;
1722 default:
1723 if (hba->cardtype == st_yel || hba->cardtype == st_P3)
1724 hba->supports_pm = 1;
1725 }
1726
1727 sts_offset = scratch_offset = (ci->rq_count+1) * ci->rq_size;
1728 if (hba->cardtype == st_yel || hba->cardtype == st_P3)
1729 sts_offset += (ci->sts_count+1) * sizeof(u32);
1730 cp_offset = sts_offset + (ci->sts_count+1) * sizeof(struct status_msg);
1731 hba->dma_size = cp_offset + sizeof(struct st_frame);
1732 if (hba->cardtype == st_seq ||
1733 (hba->cardtype == st_vsc && (pdev->subsystem_device & 1))) {
1734 hba->extra_offset = hba->dma_size;
1735 hba->dma_size += ST_ADDITIONAL_MEM;
1736 }
1737 hba->dma_mem = dma_alloc_coherent(&pdev->dev,
1738 hba->dma_size, &hba->dma_handle, GFP_KERNEL);
1739 if (!hba->dma_mem) {
1740 /* Retry minimum coherent mapping for st_seq and st_vsc */
1741 if (hba->cardtype == st_seq ||
1742 (hba->cardtype == st_vsc && (pdev->subsystem_device & 1))) {
1743 printk(KERN_WARNING DRV_NAME
1744 "(%s): allocating min buffer for controller\n",
1745 pci_name(pdev));
1746 hba->dma_size = hba->extra_offset
1747 + ST_ADDITIONAL_MEM_MIN;
1748 hba->dma_mem = dma_alloc_coherent(&pdev->dev,
1749 hba->dma_size, &hba->dma_handle, GFP_KERNEL);
1750 }
1751
1752 if (!hba->dma_mem) {
1753 err = -ENOMEM;
1754 printk(KERN_ERR DRV_NAME "(%s): dma mem alloc failed\n",
1755 pci_name(pdev));
1756 goto out_iounmap;
1757 }
1758 }
1759
1760 hba->ccb = kcalloc(ci->rq_count, sizeof(struct st_ccb), GFP_KERNEL);
1761 if (!hba->ccb) {
1762 err = -ENOMEM;
1763 printk(KERN_ERR DRV_NAME "(%s): ccb alloc failed\n",
1764 pci_name(pdev));
1765 goto out_pci_free;
1766 }
1767
1768 if (hba->cardtype == st_yel || hba->cardtype == st_P3)
1769 hba->scratch = (__le32 *)(hba->dma_mem + scratch_offset);
1770 hba->status_buffer = (struct status_msg *)(hba->dma_mem + sts_offset);
1771 hba->copy_buffer = hba->dma_mem + cp_offset;
1772 hba->rq_count = ci->rq_count;
1773 hba->rq_size = ci->rq_size;
1774 hba->sts_count = ci->sts_count;
1775 hba->alloc_rq = ci->alloc_rq;
1776 hba->map_sg = ci->map_sg;
1777 hba->send = ci->send;
1778 hba->mu_status = MU_STATE_STARTING;
1779 hba->msi_lock = 0;
1780
1781 if (hba->cardtype == st_yel || hba->cardtype == st_P3)
1782 host->sg_tablesize = 38;
1783 else
1784 host->sg_tablesize = 32;
1785 host->can_queue = ci->rq_count;
1786 host->cmd_per_lun = ci->rq_count;
1787 host->max_id = ci->max_id;
1788 host->max_lun = ci->max_lun;
1789 host->max_channel = ci->max_channel;
1790 host->unique_id = host->host_no;
1791 host->max_cmd_len = STEX_CDB_LENGTH;
1792
1793 hba->host = host;
1794 hba->pdev = pdev;
1795 init_waitqueue_head(&hba->reset_waitq);
1796
1797 snprintf(hba->work_q_name, sizeof(hba->work_q_name),
1798 "stex_wq_%d", host->host_no);
1799 hba->work_q = create_singlethread_workqueue(hba->work_q_name);
1800 if (!hba->work_q) {
1801 printk(KERN_ERR DRV_NAME "(%s): create workqueue failed\n",
1802 pci_name(pdev));
1803 err = -ENOMEM;
1804 goto out_ccb_free;
1805 }
1806 INIT_WORK(&hba->reset_work, stex_reset_work);
1807
1808 err = stex_request_irq(hba);
1809 if (err) {
1810 printk(KERN_ERR DRV_NAME "(%s): request irq failed\n",
1811 pci_name(pdev));
1812 goto out_free_wq;
1813 }
1814
1815 err = stex_handshake(hba);
1816 if (err)
1817 goto out_free_irq;
1818
1819 pci_set_drvdata(pdev, hba);
1820
1821 err = scsi_add_host(host, &pdev->dev);
1822 if (err) {
1823 printk(KERN_ERR DRV_NAME "(%s): scsi_add_host failed\n",
1824 pci_name(pdev));
1825 goto out_free_irq;
1826 }
1827
1828 scsi_scan_host(host);
1829
1830 return 0;
1831
1832 out_free_irq:
1833 stex_free_irq(hba);
1834 out_free_wq:
1835 destroy_workqueue(hba->work_q);
1836 out_ccb_free:
1837 kfree(hba->ccb);
1838 out_pci_free:
1839 dma_free_coherent(&pdev->dev, hba->dma_size,
1840 hba->dma_mem, hba->dma_handle);
1841 out_iounmap:
1842 iounmap(hba->mmio_base);
1843 out_release_regions:
1844 pci_release_regions(pdev);
1845 out_scsi_host_put:
1846 scsi_host_put(host);
1847 out_disable:
1848 pci_disable_device(pdev);
1849
1850 return err;
1851 }
1852
1853 static void stex_hba_stop(struct st_hba *hba, int st_sleep_mic)
1854 {
1855 struct req_msg *req;
1856 struct st_msg_header *msg_h;
1857 unsigned long flags;
1858 unsigned long before;
1859 u16 tag = 0;
1860
1861 spin_lock_irqsave(hba->host->host_lock, flags);
1862
1863 if ((hba->cardtype == st_yel || hba->cardtype == st_P3) &&
1864 hba->supports_pm == 1) {
1865 if (st_sleep_mic == ST_NOTHANDLED) {
1866 spin_unlock_irqrestore(hba->host->host_lock, flags);
1867 return;
1868 }
1869 }
1870 req = hba->alloc_rq(hba);
1871 if (hba->cardtype == st_yel || hba->cardtype == st_P3) {
1872 msg_h = (struct st_msg_header *)req - 1;
1873 memset(msg_h, 0, hba->rq_size);
1874 } else
1875 memset(req, 0, hba->rq_size);
1876
1877 if ((hba->cardtype == st_yosemite || hba->cardtype == st_yel
1878 || hba->cardtype == st_P3)
1879 && st_sleep_mic == ST_IGNORED) {
1880 req->cdb[0] = MGT_CMD;
1881 req->cdb[1] = MGT_CMD_SIGNATURE;
1882 req->cdb[2] = CTLR_CONFIG_CMD;
1883 req->cdb[3] = CTLR_SHUTDOWN;
1884 } else if ((hba->cardtype == st_yel || hba->cardtype == st_P3)
1885 && st_sleep_mic != ST_IGNORED) {
1886 req->cdb[0] = MGT_CMD;
1887 req->cdb[1] = MGT_CMD_SIGNATURE;
1888 req->cdb[2] = CTLR_CONFIG_CMD;
1889 req->cdb[3] = PMIC_SHUTDOWN;
1890 req->cdb[4] = st_sleep_mic;
1891 } else {
1892 req->cdb[0] = CONTROLLER_CMD;
1893 req->cdb[1] = CTLR_POWER_STATE_CHANGE;
1894 req->cdb[2] = CTLR_POWER_SAVING;
1895 }
1896 hba->ccb[tag].cmd = NULL;
1897 hba->ccb[tag].sg_count = 0;
1898 hba->ccb[tag].sense_bufflen = 0;
1899 hba->ccb[tag].sense_buffer = NULL;
1900 hba->ccb[tag].req_type = PASSTHRU_REQ_TYPE;
1901 hba->send(hba, req, tag);
1902 spin_unlock_irqrestore(hba->host->host_lock, flags);
1903 before = jiffies;
1904 while (hba->ccb[tag].req_type & PASSTHRU_REQ_TYPE) {
1905 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) {
1906 hba->ccb[tag].req_type = 0;
1907 hba->mu_status = MU_STATE_STOP;
1908 return;
1909 }
1910 msleep(1);
1911 }
1912 hba->mu_status = MU_STATE_STOP;
1913 }
1914
1915 static void stex_hba_free(struct st_hba *hba)
1916 {
1917 stex_free_irq(hba);
1918
1919 destroy_workqueue(hba->work_q);
1920
1921 iounmap(hba->mmio_base);
1922
1923 pci_release_regions(hba->pdev);
1924
1925 kfree(hba->ccb);
1926
1927 dma_free_coherent(&hba->pdev->dev, hba->dma_size,
1928 hba->dma_mem, hba->dma_handle);
1929 }
1930
1931 static void stex_remove(struct pci_dev *pdev)
1932 {
1933 struct st_hba *hba = pci_get_drvdata(pdev);
1934
1935 hba->mu_status = MU_STATE_NOCONNECT;
1936 return_abnormal_state(hba, DID_NO_CONNECT);
1937 scsi_remove_host(hba->host);
1938
1939 scsi_block_requests(hba->host);
1940
1941 stex_hba_free(hba);
1942
1943 scsi_host_put(hba->host);
1944
1945 pci_disable_device(pdev);
1946
1947 unregister_reboot_notifier(&stex_notifier);
1948 }
1949
1950 static void stex_shutdown(struct pci_dev *pdev)
1951 {
1952 struct st_hba *hba = pci_get_drvdata(pdev);
1953
1954 if (hba->supports_pm == 0) {
1955 stex_hba_stop(hba, ST_IGNORED);
1956 } else if (hba->supports_pm == 1 && S6flag) {
1957 unregister_reboot_notifier(&stex_notifier);
1958 stex_hba_stop(hba, ST_S6);
1959 } else
1960 stex_hba_stop(hba, ST_S5);
1961 }
1962
1963 static int stex_choice_sleep_mic(struct st_hba *hba, pm_message_t state)
1964 {
1965 switch (state.event) {
1966 case PM_EVENT_SUSPEND:
1967 return ST_S3;
1968 case PM_EVENT_HIBERNATE:
1969 hba->msi_lock = 0;
1970 return ST_S4;
1971 default:
1972 return ST_NOTHANDLED;
1973 }
1974 }
1975
1976 static int stex_suspend(struct pci_dev *pdev, pm_message_t state)
1977 {
1978 struct st_hba *hba = pci_get_drvdata(pdev);
1979
1980 if ((hba->cardtype == st_yel || hba->cardtype == st_P3)
1981 && hba->supports_pm == 1)
1982 stex_hba_stop(hba, stex_choice_sleep_mic(hba, state));
1983 else
1984 stex_hba_stop(hba, ST_IGNORED);
1985 return 0;
1986 }
1987
1988 static int stex_resume(struct pci_dev *pdev)
1989 {
1990 struct st_hba *hba = pci_get_drvdata(pdev);
1991
1992 hba->mu_status = MU_STATE_STARTING;
1993 stex_handshake(hba);
1994 return 0;
1995 }
1996
1997 static int stex_halt(struct notifier_block *nb, unsigned long event, void *buf)
1998 {
1999 S6flag = 1;
2000 return NOTIFY_OK;
2001 }
2002 MODULE_DEVICE_TABLE(pci, stex_pci_tbl);
2003
2004 static struct pci_driver stex_pci_driver = {
2005 .name = DRV_NAME,
2006 .id_table = stex_pci_tbl,
2007 .probe = stex_probe,
2008 .remove = stex_remove,
2009 .shutdown = stex_shutdown,
2010 .suspend = stex_suspend,
2011 .resume = stex_resume,
2012 };
2013
2014 static int __init stex_init(void)
2015 {
2016 printk(KERN_INFO DRV_NAME
2017 ": Promise SuperTrak EX Driver version: %s\n",
2018 ST_DRIVER_VERSION);
2019
2020 return pci_register_driver(&stex_pci_driver);
2021 }
2022
2023 static void __exit stex_exit(void)
2024 {
2025 pci_unregister_driver(&stex_pci_driver);
2026 }
2027
2028 module_init(stex_init);
2029 module_exit(stex_exit);
Linux with added FPC-III support