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KVM: x86: always use "acknowledge interrupt on exit"
[linux/fpc-iii.git] / drivers / scsi / stex.c
blob5b23175a584cc68fc99c0d4f099bcba4c47f0702
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 <asm/io.h>
30 #include <asm/irq.h>
31 #include <asm/byteorder.h>
32 #include <scsi/scsi.h>
33 #include <scsi/scsi_device.h>
34 #include <scsi/scsi_cmnd.h>
35 #include <scsi/scsi_host.h>
36 #include <scsi/scsi_tcq.h>
37 #include <scsi/scsi_dbg.h>
38 #include <scsi/scsi_eh.h>
39
40 #define DRV_NAME "stex"
41 #define ST_DRIVER_VERSION "5.00.0000.01"
42 #define ST_VER_MAJOR 5
43 #define ST_VER_MINOR 00
44 #define ST_OEM 0000
45 #define ST_BUILD_VER 01
46
47 enum {
48 /* MU register offset */
49 IMR0 = 0x10, /* MU_INBOUND_MESSAGE_REG0 */
50 IMR1 = 0x14, /* MU_INBOUND_MESSAGE_REG1 */
51 OMR0 = 0x18, /* MU_OUTBOUND_MESSAGE_REG0 */
52 OMR1 = 0x1c, /* MU_OUTBOUND_MESSAGE_REG1 */
53 IDBL = 0x20, /* MU_INBOUND_DOORBELL */
54 IIS = 0x24, /* MU_INBOUND_INTERRUPT_STATUS */
55 IIM = 0x28, /* MU_INBOUND_INTERRUPT_MASK */
56 ODBL = 0x2c, /* MU_OUTBOUND_DOORBELL */
57 OIS = 0x30, /* MU_OUTBOUND_INTERRUPT_STATUS */
58 OIM = 0x3c, /* MU_OUTBOUND_INTERRUPT_MASK */
59
60 YIOA_STATUS = 0x00,
61 YH2I_INT = 0x20,
62 YINT_EN = 0x34,
63 YI2H_INT = 0x9c,
64 YI2H_INT_C = 0xa0,
65 YH2I_REQ = 0xc0,
66 YH2I_REQ_HI = 0xc4,
67
68 /* MU register value */
69 MU_INBOUND_DOORBELL_HANDSHAKE = (1 << 0),
70 MU_INBOUND_DOORBELL_REQHEADCHANGED = (1 << 1),
71 MU_INBOUND_DOORBELL_STATUSTAILCHANGED = (1 << 2),
72 MU_INBOUND_DOORBELL_HMUSTOPPED = (1 << 3),
73 MU_INBOUND_DOORBELL_RESET = (1 << 4),
74
75 MU_OUTBOUND_DOORBELL_HANDSHAKE = (1 << 0),
76 MU_OUTBOUND_DOORBELL_REQUESTTAILCHANGED = (1 << 1),
77 MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED = (1 << 2),
78 MU_OUTBOUND_DOORBELL_BUSCHANGE = (1 << 3),
79 MU_OUTBOUND_DOORBELL_HASEVENT = (1 << 4),
80 MU_OUTBOUND_DOORBELL_REQUEST_RESET = (1 << 27),
81
82 /* MU status code */
83 MU_STATE_STARTING = 1,
84 MU_STATE_STARTED = 2,
85 MU_STATE_RESETTING = 3,
86 MU_STATE_FAILED = 4,
87 MU_STATE_STOP = 5,
88 MU_STATE_NOCONNECT = 6,
89
90 MU_MAX_DELAY = 120,
91 MU_HANDSHAKE_SIGNATURE = 0x55aaaa55,
92 MU_HANDSHAKE_SIGNATURE_HALF = 0x5a5a0000,
93 MU_HARD_RESET_WAIT = 30000,
94 HMU_PARTNER_TYPE = 2,
95
96 /* firmware returned values */
97 SRB_STATUS_SUCCESS = 0x01,
98 SRB_STATUS_ERROR = 0x04,
99 SRB_STATUS_BUSY = 0x05,
100 SRB_STATUS_INVALID_REQUEST = 0x06,
101 SRB_STATUS_SELECTION_TIMEOUT = 0x0A,
102 SRB_SEE_SENSE = 0x80,
103
104 /* task attribute */
105 TASK_ATTRIBUTE_SIMPLE = 0x0,
106 TASK_ATTRIBUTE_HEADOFQUEUE = 0x1,
107 TASK_ATTRIBUTE_ORDERED = 0x2,
108 TASK_ATTRIBUTE_ACA = 0x4,
109
110 SS_STS_NORMAL = 0x80000000,
111 SS_STS_DONE = 0x40000000,
112 SS_STS_HANDSHAKE = 0x20000000,
113
114 SS_HEAD_HANDSHAKE = 0x80,
115
116 SS_H2I_INT_RESET = 0x100,
117
118 SS_I2H_REQUEST_RESET = 0x2000,
119
120 SS_MU_OPERATIONAL = 0x80000000,
121
122 STEX_CDB_LENGTH = 16,
123 STATUS_VAR_LEN = 128,
124
125 /* sg flags */
126 SG_CF_EOT = 0x80, /* end of table */
127 SG_CF_64B = 0x40, /* 64 bit item */
128 SG_CF_HOST = 0x20, /* sg in host memory */
129 MSG_DATA_DIR_ND = 0,
130 MSG_DATA_DIR_IN = 1,
131 MSG_DATA_DIR_OUT = 2,
132
133 st_shasta = 0,
134 st_vsc = 1,
135 st_yosemite = 2,
136 st_seq = 3,
137 st_yel = 4,
138
139 PASSTHRU_REQ_TYPE = 0x00000001,
140 PASSTHRU_REQ_NO_WAKEUP = 0x00000100,
141 ST_INTERNAL_TIMEOUT = 180,
142
143 ST_TO_CMD = 0,
144 ST_FROM_CMD = 1,
145
146 /* vendor specific commands of Promise */
147 MGT_CMD = 0xd8,
148 SINBAND_MGT_CMD = 0xd9,
149 ARRAY_CMD = 0xe0,
150 CONTROLLER_CMD = 0xe1,
151 DEBUGGING_CMD = 0xe2,
152 PASSTHRU_CMD = 0xe3,
153
154 PASSTHRU_GET_ADAPTER = 0x05,
155 PASSTHRU_GET_DRVVER = 0x10,
156
157 CTLR_CONFIG_CMD = 0x03,
158 CTLR_SHUTDOWN = 0x0d,
159
160 CTLR_POWER_STATE_CHANGE = 0x0e,
161 CTLR_POWER_SAVING = 0x01,
162
163 PASSTHRU_SIGNATURE = 0x4e415041,
164 MGT_CMD_SIGNATURE = 0xba,
165
166 INQUIRY_EVPD = 0x01,
167
168 ST_ADDITIONAL_MEM = 0x200000,
169 ST_ADDITIONAL_MEM_MIN = 0x80000,
170 PMIC_SHUTDOWN = 0x0D,
171 PMIC_REUMSE = 0x10,
172 ST_IGNORED = -1,
173 ST_NOTHANDLED = 7,
174 ST_S3 = 3,
175 ST_S4 = 4,
176 ST_S5 = 5,
177 ST_S6 = 6,
178 };
179
180 struct st_sgitem {
181 u8 ctrl; /* SG_CF_xxx */
182 u8 reserved[3];
183 __le32 count;
184 __le64 addr;
185 };
186
187 struct st_ss_sgitem {
188 __le32 addr;
189 __le32 addr_hi;
190 __le32 count;
191 };
192
193 struct st_sgtable {
194 __le16 sg_count;
195 __le16 max_sg_count;
196 __le32 sz_in_byte;
197 };
198
199 struct st_msg_header {
200 __le64 handle;
201 u8 flag;
202 u8 channel;
203 __le16 timeout;
204 u32 reserved;
205 };
206
207 struct handshake_frame {
208 __le64 rb_phy; /* request payload queue physical address */
209 __le16 req_sz; /* size of each request payload */
210 __le16 req_cnt; /* count of reqs the buffer can hold */
211 __le16 status_sz; /* size of each status payload */
212 __le16 status_cnt; /* count of status the buffer can hold */
213 __le64 hosttime; /* seconds from Jan 1, 1970 (GMT) */
214 u8 partner_type; /* who sends this frame */
215 u8 reserved0[7];
216 __le32 partner_ver_major;
217 __le32 partner_ver_minor;
218 __le32 partner_ver_oem;
219 __le32 partner_ver_build;
220 __le32 extra_offset; /* NEW */
221 __le32 extra_size; /* NEW */
222 __le32 scratch_size;
223 u32 reserved1;
224 };
225
226 struct req_msg {
227 __le16 tag;
228 u8 lun;
229 u8 target;
230 u8 task_attr;
231 u8 task_manage;
232 u8 data_dir;
233 u8 payload_sz; /* payload size in 4-byte, not used */
234 u8 cdb[STEX_CDB_LENGTH];
235 u32 variable[0];
236 };
237
238 struct status_msg {
239 __le16 tag;
240 u8 lun;
241 u8 target;
242 u8 srb_status;
243 u8 scsi_status;
244 u8 reserved;
245 u8 payload_sz; /* payload size in 4-byte */
246 u8 variable[STATUS_VAR_LEN];
247 };
248
249 struct ver_info {
250 u32 major;
251 u32 minor;
252 u32 oem;
253 u32 build;
254 u32 reserved[2];
255 };
256
257 struct st_frame {
258 u32 base[6];
259 u32 rom_addr;
260
261 struct ver_info drv_ver;
262 struct ver_info bios_ver;
263
264 u32 bus;
265 u32 slot;
266 u32 irq_level;
267 u32 irq_vec;
268 u32 id;
269 u32 subid;
270
271 u32 dimm_size;
272 u8 dimm_type;
273 u8 reserved[3];
274
275 u32 channel;
276 u32 reserved1;
277 };
278
279 struct st_drvver {
280 u32 major;
281 u32 minor;
282 u32 oem;
283 u32 build;
284 u32 signature[2];
285 u8 console_id;
286 u8 host_no;
287 u8 reserved0[2];
288 u32 reserved[3];
289 };
290
291 struct st_ccb {
292 struct req_msg *req;
293 struct scsi_cmnd *cmd;
294
295 void *sense_buffer;
296 unsigned int sense_bufflen;
297 int sg_count;
298
299 u32 req_type;
300 u8 srb_status;
301 u8 scsi_status;
302 u8 reserved[2];
303 };
304
305 struct st_hba {
306 void __iomem *mmio_base; /* iomapped PCI memory space */
307 void *dma_mem;
308 dma_addr_t dma_handle;
309 size_t dma_size;
310
311 struct Scsi_Host *host;
312 struct pci_dev *pdev;
313
314 struct req_msg * (*alloc_rq) (struct st_hba *);
315 int (*map_sg)(struct st_hba *, struct req_msg *, struct st_ccb *);
316 void (*send) (struct st_hba *, struct req_msg *, u16);
317
318 u32 req_head;
319 u32 req_tail;
320 u32 status_head;
321 u32 status_tail;
322
323 struct status_msg *status_buffer;
324 void *copy_buffer; /* temp buffer for driver-handled commands */
325 struct st_ccb *ccb;
326 struct st_ccb *wait_ccb;
327 __le32 *scratch;
328
329 char work_q_name[20];
330 struct workqueue_struct *work_q;
331 struct work_struct reset_work;
332 wait_queue_head_t reset_waitq;
333 unsigned int mu_status;
334 unsigned int cardtype;
335 int msi_enabled;
336 int out_req_cnt;
337 u32 extra_offset;
338 u16 rq_count;
339 u16 rq_size;
340 u16 sts_count;
341 u8 supports_pm;
342 };
343
344 struct st_card_info {
345 struct req_msg * (*alloc_rq) (struct st_hba *);
346 int (*map_sg)(struct st_hba *, struct req_msg *, struct st_ccb *);
347 void (*send) (struct st_hba *, struct req_msg *, u16);
348 unsigned int max_id;
349 unsigned int max_lun;
350 unsigned int max_channel;
351 u16 rq_count;
352 u16 rq_size;
353 u16 sts_count;
354 };
355
356 static int msi;
357 module_param(msi, int, 0);
358 MODULE_PARM_DESC(msi, "Enable Message Signaled Interrupts(0=off, 1=on)");
359
360 static const char console_inq_page[] =
361 {
362 0x03,0x00,0x03,0x03,0xFA,0x00,0x00,0x30,
363 0x50,0x72,0x6F,0x6D,0x69,0x73,0x65,0x20, /* "Promise " */
364 0x52,0x41,0x49,0x44,0x20,0x43,0x6F,0x6E, /* "RAID Con" */
365 0x73,0x6F,0x6C,0x65,0x20,0x20,0x20,0x20, /* "sole " */
366 0x31,0x2E,0x30,0x30,0x20,0x20,0x20,0x20, /* "1.00 " */
367 0x53,0x58,0x2F,0x52,0x53,0x41,0x46,0x2D, /* "SX/RSAF-" */
368 0x54,0x45,0x31,0x2E,0x30,0x30,0x20,0x20, /* "TE1.00 " */
369 0x0C,0x20,0x20,0x20,0x20,0x20,0x20,0x20
370 };
371
372 MODULE_AUTHOR("Ed Lin");
373 MODULE_DESCRIPTION("Promise Technology SuperTrak EX Controllers");
374 MODULE_LICENSE("GPL");
375 MODULE_VERSION(ST_DRIVER_VERSION);
376
377 static struct status_msg *stex_get_status(struct st_hba *hba)
378 {
379 struct status_msg *status = hba->status_buffer + hba->status_tail;
380
381 ++hba->status_tail;
382 hba->status_tail %= hba->sts_count+1;
383
384 return status;
385 }
386
387 static void stex_invalid_field(struct scsi_cmnd *cmd,
388 void (*done)(struct scsi_cmnd *))
389 {
390 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
391
392 /* "Invalid field in cdb" */
393 scsi_build_sense_buffer(0, cmd->sense_buffer, ILLEGAL_REQUEST, 0x24,
394 0x0);
395 done(cmd);
396 }
397
398 static struct req_msg *stex_alloc_req(struct st_hba *hba)
399 {
400 struct req_msg *req = hba->dma_mem + hba->req_head * hba->rq_size;
401
402 ++hba->req_head;
403 hba->req_head %= hba->rq_count+1;
404
405 return req;
406 }
407
408 static struct req_msg *stex_ss_alloc_req(struct st_hba *hba)
409 {
410 return (struct req_msg *)(hba->dma_mem +
411 hba->req_head * hba->rq_size + sizeof(struct st_msg_header));
412 }
413
414 static int stex_map_sg(struct st_hba *hba,
415 struct req_msg *req, struct st_ccb *ccb)
416 {
417 struct scsi_cmnd *cmd;
418 struct scatterlist *sg;
419 struct st_sgtable *dst;
420 struct st_sgitem *table;
421 int i, nseg;
422
423 cmd = ccb->cmd;
424 nseg = scsi_dma_map(cmd);
425 BUG_ON(nseg < 0);
426 if (nseg) {
427 dst = (struct st_sgtable *)req->variable;
428
429 ccb->sg_count = nseg;
430 dst->sg_count = cpu_to_le16((u16)nseg);
431 dst->max_sg_count = cpu_to_le16(hba->host->sg_tablesize);
432 dst->sz_in_byte = cpu_to_le32(scsi_bufflen(cmd));
433
434 table = (struct st_sgitem *)(dst + 1);
435 scsi_for_each_sg(cmd, sg, nseg, i) {
436 table[i].count = cpu_to_le32((u32)sg_dma_len(sg));
437 table[i].addr = cpu_to_le64(sg_dma_address(sg));
438 table[i].ctrl = SG_CF_64B | SG_CF_HOST;
439 }
440 table[--i].ctrl |= SG_CF_EOT;
441 }
442
443 return nseg;
444 }
445
446 static int stex_ss_map_sg(struct st_hba *hba,
447 struct req_msg *req, struct st_ccb *ccb)
448 {
449 struct scsi_cmnd *cmd;
450 struct scatterlist *sg;
451 struct st_sgtable *dst;
452 struct st_ss_sgitem *table;
453 int i, nseg;
454
455 cmd = ccb->cmd;
456 nseg = scsi_dma_map(cmd);
457 BUG_ON(nseg < 0);
458 if (nseg) {
459 dst = (struct st_sgtable *)req->variable;
460
461 ccb->sg_count = nseg;
462 dst->sg_count = cpu_to_le16((u16)nseg);
463 dst->max_sg_count = cpu_to_le16(hba->host->sg_tablesize);
464 dst->sz_in_byte = cpu_to_le32(scsi_bufflen(cmd));
465
466 table = (struct st_ss_sgitem *)(dst + 1);
467 scsi_for_each_sg(cmd, sg, nseg, i) {
468 table[i].count = cpu_to_le32((u32)sg_dma_len(sg));
469 table[i].addr =
470 cpu_to_le32(sg_dma_address(sg) & 0xffffffff);
471 table[i].addr_hi =
472 cpu_to_le32((sg_dma_address(sg) >> 16) >> 16);
473 }
474 }
475
476 return nseg;
477 }
478
479 static void stex_controller_info(struct st_hba *hba, struct st_ccb *ccb)
480 {
481 struct st_frame *p;
482 size_t count = sizeof(struct st_frame);
483
484 p = hba->copy_buffer;
485 scsi_sg_copy_to_buffer(ccb->cmd, p, count);
486 memset(p->base, 0, sizeof(u32)*6);
487 *(unsigned long *)(p->base) = pci_resource_start(hba->pdev, 0);
488 p->rom_addr = 0;
489
490 p->drv_ver.major = ST_VER_MAJOR;
491 p->drv_ver.minor = ST_VER_MINOR;
492 p->drv_ver.oem = ST_OEM;
493 p->drv_ver.build = ST_BUILD_VER;
494
495 p->bus = hba->pdev->bus->number;
496 p->slot = hba->pdev->devfn;
497 p->irq_level = 0;
498 p->irq_vec = hba->pdev->irq;
499 p->id = hba->pdev->vendor << 16 | hba->pdev->device;
500 p->subid =
501 hba->pdev->subsystem_vendor << 16 | hba->pdev->subsystem_device;
502
503 scsi_sg_copy_from_buffer(ccb->cmd, p, count);
504 }
505
506 static void
507 stex_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag)
508 {
509 req->tag = cpu_to_le16(tag);
510
511 hba->ccb[tag].req = req;
512 hba->out_req_cnt++;
513
514 writel(hba->req_head, hba->mmio_base + IMR0);
515 writel(MU_INBOUND_DOORBELL_REQHEADCHANGED, hba->mmio_base + IDBL);
516 readl(hba->mmio_base + IDBL); /* flush */
517 }
518
519 static void
520 stex_ss_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag)
521 {
522 struct scsi_cmnd *cmd;
523 struct st_msg_header *msg_h;
524 dma_addr_t addr;
525
526 req->tag = cpu_to_le16(tag);
527
528 hba->ccb[tag].req = req;
529 hba->out_req_cnt++;
530
531 cmd = hba->ccb[tag].cmd;
532 msg_h = (struct st_msg_header *)req - 1;
533 if (likely(cmd)) {
534 msg_h->channel = (u8)cmd->device->channel;
535 msg_h->timeout = cpu_to_le16(cmd->request->timeout/HZ);
536 }
537 addr = hba->dma_handle + hba->req_head * hba->rq_size;
538 addr += (hba->ccb[tag].sg_count+4)/11;
539 msg_h->handle = cpu_to_le64(addr);
540
541 ++hba->req_head;
542 hba->req_head %= hba->rq_count+1;
543
544 writel((addr >> 16) >> 16, hba->mmio_base + YH2I_REQ_HI);
545 readl(hba->mmio_base + YH2I_REQ_HI); /* flush */
546 writel(addr, hba->mmio_base + YH2I_REQ);
547 readl(hba->mmio_base + YH2I_REQ); /* flush */
548 }
549
550 static void return_abnormal_state(struct st_hba *hba, int status)
551 {
552 struct st_ccb *ccb;
553 unsigned long flags;
554 u16 tag;
555
556 spin_lock_irqsave(hba->host->host_lock, flags);
557 for (tag = 0; tag < hba->host->can_queue; tag++) {
558 ccb = &hba->ccb[tag];
559 if (ccb->req == NULL)
560 continue;
561 ccb->req = NULL;
562 if (ccb->cmd) {
563 scsi_dma_unmap(ccb->cmd);
564 ccb->cmd->result = status << 16;
565 ccb->cmd->scsi_done(ccb->cmd);
566 ccb->cmd = NULL;
567 }
568 }
569 spin_unlock_irqrestore(hba->host->host_lock, flags);
570 }
571 static int
572 stex_slave_config(struct scsi_device *sdev)
573 {
574 sdev->use_10_for_rw = 1;
575 sdev->use_10_for_ms = 1;
576 blk_queue_rq_timeout(sdev->request_queue, 60 * HZ);
577
578 return 0;
579 }
580
581 static int
582 stex_queuecommand_lck(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
583 {
584 struct st_hba *hba;
585 struct Scsi_Host *host;
586 unsigned int id, lun;
587 struct req_msg *req;
588 u16 tag;
589
590 host = cmd->device->host;
591 id = cmd->device->id;
592 lun = cmd->device->lun;
593 hba = (struct st_hba *) &host->hostdata[0];
594 if (hba->mu_status == MU_STATE_NOCONNECT) {
595 cmd->result = DID_NO_CONNECT;
596 done(cmd);
597 return 0;
598 }
599 if (unlikely(hba->mu_status != MU_STATE_STARTED))
600 return SCSI_MLQUEUE_HOST_BUSY;
601
602 switch (cmd->cmnd[0]) {
603 case MODE_SENSE_10:
604 {
605 static char ms10_caching_page[12] =
606 { 0, 0x12, 0, 0, 0, 0, 0, 0, 0x8, 0xa, 0x4, 0 };
607 unsigned char page;
608
609 page = cmd->cmnd[2] & 0x3f;
610 if (page == 0x8 || page == 0x3f) {
611 scsi_sg_copy_from_buffer(cmd, ms10_caching_page,
612 sizeof(ms10_caching_page));
613 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
614 done(cmd);
615 } else
616 stex_invalid_field(cmd, done);
617 return 0;
618 }
619 case REPORT_LUNS:
620 /*
621 * The shasta firmware does not report actual luns in the
622 * target, so fail the command to force sequential lun scan.
623 * Also, the console device does not support this command.
624 */
625 if (hba->cardtype == st_shasta || id == host->max_id - 1) {
626 stex_invalid_field(cmd, done);
627 return 0;
628 }
629 break;
630 case TEST_UNIT_READY:
631 if (id == host->max_id - 1) {
632 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
633 done(cmd);
634 return 0;
635 }
636 break;
637 case INQUIRY:
638 if (lun >= host->max_lun) {
639 cmd->result = DID_NO_CONNECT << 16;
640 done(cmd);
641 return 0;
642 }
643 if (id != host->max_id - 1)
644 break;
645 if (!lun && !cmd->device->channel &&
646 (cmd->cmnd[1] & INQUIRY_EVPD) == 0) {
647 scsi_sg_copy_from_buffer(cmd, (void *)console_inq_page,
648 sizeof(console_inq_page));
649 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
650 done(cmd);
651 } else
652 stex_invalid_field(cmd, done);
653 return 0;
654 case PASSTHRU_CMD:
655 if (cmd->cmnd[1] == PASSTHRU_GET_DRVVER) {
656 struct st_drvver ver;
657 size_t cp_len = sizeof(ver);
658
659 ver.major = ST_VER_MAJOR;
660 ver.minor = ST_VER_MINOR;
661 ver.oem = ST_OEM;
662 ver.build = ST_BUILD_VER;
663 ver.signature[0] = PASSTHRU_SIGNATURE;
664 ver.console_id = host->max_id - 1;
665 ver.host_no = hba->host->host_no;
666 cp_len = scsi_sg_copy_from_buffer(cmd, &ver, cp_len);
667 cmd->result = sizeof(ver) == cp_len ?
668 DID_OK << 16 | COMMAND_COMPLETE << 8 :
669 DID_ERROR << 16 | COMMAND_COMPLETE << 8;
670 done(cmd);
671 return 0;
672 }
673 default:
674 break;
675 }
676
677 cmd->scsi_done = done;
678
679 tag = cmd->request->tag;
680
681 if (unlikely(tag >= host->can_queue))
682 return SCSI_MLQUEUE_HOST_BUSY;
683
684 req = hba->alloc_rq(hba);
685
686 req->lun = lun;
687 req->target = id;
688
689 /* cdb */
690 memcpy(req->cdb, cmd->cmnd, STEX_CDB_LENGTH);
691
692 if (cmd->sc_data_direction == DMA_FROM_DEVICE)
693 req->data_dir = MSG_DATA_DIR_IN;
694 else if (cmd->sc_data_direction == DMA_TO_DEVICE)
695 req->data_dir = MSG_DATA_DIR_OUT;
696 else
697 req->data_dir = MSG_DATA_DIR_ND;
698
699 hba->ccb[tag].cmd = cmd;
700 hba->ccb[tag].sense_bufflen = SCSI_SENSE_BUFFERSIZE;
701 hba->ccb[tag].sense_buffer = cmd->sense_buffer;
702
703 if (!hba->map_sg(hba, req, &hba->ccb[tag])) {
704 hba->ccb[tag].sg_count = 0;
705 memset(&req->variable[0], 0, 8);
706 }
707
708 hba->send(hba, req, tag);
709 return 0;
710 }
711
712 static DEF_SCSI_QCMD(stex_queuecommand)
713
714 static void stex_scsi_done(struct st_ccb *ccb)
715 {
716 struct scsi_cmnd *cmd = ccb->cmd;
717 int result;
718
719 if (ccb->srb_status == SRB_STATUS_SUCCESS || ccb->srb_status == 0) {
720 result = ccb->scsi_status;
721 switch (ccb->scsi_status) {
722 case SAM_STAT_GOOD:
723 result |= DID_OK << 16 | COMMAND_COMPLETE << 8;
724 break;
725 case SAM_STAT_CHECK_CONDITION:
726 result |= DRIVER_SENSE << 24;
727 break;
728 case SAM_STAT_BUSY:
729 result |= DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
730 break;
731 default:
732 result |= DID_ERROR << 16 | COMMAND_COMPLETE << 8;
733 break;
734 }
735 }
736 else if (ccb->srb_status & SRB_SEE_SENSE)
737 result = DRIVER_SENSE << 24 | SAM_STAT_CHECK_CONDITION;
738 else switch (ccb->srb_status) {
739 case SRB_STATUS_SELECTION_TIMEOUT:
740 result = DID_NO_CONNECT << 16 | COMMAND_COMPLETE << 8;
741 break;
742 case SRB_STATUS_BUSY:
743 result = DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
744 break;
745 case SRB_STATUS_INVALID_REQUEST:
746 case SRB_STATUS_ERROR:
747 default:
748 result = DID_ERROR << 16 | COMMAND_COMPLETE << 8;
749 break;
750 }
751
752 cmd->result = result;
753 cmd->scsi_done(cmd);
754 }
755
756 static void stex_copy_data(struct st_ccb *ccb,
757 struct status_msg *resp, unsigned int variable)
758 {
759 if (resp->scsi_status != SAM_STAT_GOOD) {
760 if (ccb->sense_buffer != NULL)
761 memcpy(ccb->sense_buffer, resp->variable,
762 min(variable, ccb->sense_bufflen));
763 return;
764 }
765
766 if (ccb->cmd == NULL)
767 return;
768 scsi_sg_copy_from_buffer(ccb->cmd, resp->variable, variable);
769 }
770
771 static void stex_check_cmd(struct st_hba *hba,
772 struct st_ccb *ccb, struct status_msg *resp)
773 {
774 if (ccb->cmd->cmnd[0] == MGT_CMD &&
775 resp->scsi_status != SAM_STAT_CHECK_CONDITION)
776 scsi_set_resid(ccb->cmd, scsi_bufflen(ccb->cmd) -
777 le32_to_cpu(*(__le32 *)&resp->variable[0]));
778 }
779
780 static void stex_mu_intr(struct st_hba *hba, u32 doorbell)
781 {
782 void __iomem *base = hba->mmio_base;
783 struct status_msg *resp;
784 struct st_ccb *ccb;
785 unsigned int size;
786 u16 tag;
787
788 if (unlikely(!(doorbell & MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED)))
789 return;
790
791 /* status payloads */
792 hba->status_head = readl(base + OMR1);
793 if (unlikely(hba->status_head > hba->sts_count)) {
794 printk(KERN_WARNING DRV_NAME "(%s): invalid status head\n",
795 pci_name(hba->pdev));
796 return;
797 }
798
799 /*
800 * it's not a valid status payload if:
801 * 1. there are no pending requests(e.g. during init stage)
802 * 2. there are some pending requests, but the controller is in
803 * reset status, and its type is not st_yosemite
804 * firmware of st_yosemite in reset status will return pending requests
805 * to driver, so we allow it to pass
806 */
807 if (unlikely(hba->out_req_cnt <= 0 ||
808 (hba->mu_status == MU_STATE_RESETTING &&
809 hba->cardtype != st_yosemite))) {
810 hba->status_tail = hba->status_head;
811 goto update_status;
812 }
813
814 while (hba->status_tail != hba->status_head) {
815 resp = stex_get_status(hba);
816 tag = le16_to_cpu(resp->tag);
817 if (unlikely(tag >= hba->host->can_queue)) {
818 printk(KERN_WARNING DRV_NAME
819 "(%s): invalid tag\n", pci_name(hba->pdev));
820 continue;
821 }
822
823 hba->out_req_cnt--;
824 ccb = &hba->ccb[tag];
825 if (unlikely(hba->wait_ccb == ccb))
826 hba->wait_ccb = NULL;
827 if (unlikely(ccb->req == NULL)) {
828 printk(KERN_WARNING DRV_NAME
829 "(%s): lagging req\n", pci_name(hba->pdev));
830 continue;
831 }
832
833 size = resp->payload_sz * sizeof(u32); /* payload size */
834 if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN ||
835 size > sizeof(*resp))) {
836 printk(KERN_WARNING DRV_NAME "(%s): bad status size\n",
837 pci_name(hba->pdev));
838 } else {
839 size -= sizeof(*resp) - STATUS_VAR_LEN; /* copy size */
840 if (size)
841 stex_copy_data(ccb, resp, size);
842 }
843
844 ccb->req = NULL;
845 ccb->srb_status = resp->srb_status;
846 ccb->scsi_status = resp->scsi_status;
847
848 if (likely(ccb->cmd != NULL)) {
849 if (hba->cardtype == st_yosemite)
850 stex_check_cmd(hba, ccb, resp);
851
852 if (unlikely(ccb->cmd->cmnd[0] == PASSTHRU_CMD &&
853 ccb->cmd->cmnd[1] == PASSTHRU_GET_ADAPTER))
854 stex_controller_info(hba, ccb);
855
856 scsi_dma_unmap(ccb->cmd);
857 stex_scsi_done(ccb);
858 } else
859 ccb->req_type = 0;
860 }
861
862 update_status:
863 writel(hba->status_head, base + IMR1);
864 readl(base + IMR1); /* flush */
865 }
866
867 static irqreturn_t stex_intr(int irq, void *__hba)
868 {
869 struct st_hba *hba = __hba;
870 void __iomem *base = hba->mmio_base;
871 u32 data;
872 unsigned long flags;
873
874 spin_lock_irqsave(hba->host->host_lock, flags);
875
876 data = readl(base + ODBL);
877
878 if (data && data != 0xffffffff) {
879 /* clear the interrupt */
880 writel(data, base + ODBL);
881 readl(base + ODBL); /* flush */
882 stex_mu_intr(hba, data);
883 spin_unlock_irqrestore(hba->host->host_lock, flags);
884 if (unlikely(data & MU_OUTBOUND_DOORBELL_REQUEST_RESET &&
885 hba->cardtype == st_shasta))
886 queue_work(hba->work_q, &hba->reset_work);
887 return IRQ_HANDLED;
888 }
889
890 spin_unlock_irqrestore(hba->host->host_lock, flags);
891
892 return IRQ_NONE;
893 }
894
895 static void stex_ss_mu_intr(struct st_hba *hba)
896 {
897 struct status_msg *resp;
898 struct st_ccb *ccb;
899 __le32 *scratch;
900 unsigned int size;
901 int count = 0;
902 u32 value;
903 u16 tag;
904
905 if (unlikely(hba->out_req_cnt <= 0 ||
906 hba->mu_status == MU_STATE_RESETTING))
907 return;
908
909 while (count < hba->sts_count) {
910 scratch = hba->scratch + hba->status_tail;
911 value = le32_to_cpu(*scratch);
912 if (unlikely(!(value & SS_STS_NORMAL)))
913 return;
914
915 resp = hba->status_buffer + hba->status_tail;
916 *scratch = 0;
917 ++count;
918 ++hba->status_tail;
919 hba->status_tail %= hba->sts_count+1;
920
921 tag = (u16)value;
922 if (unlikely(tag >= hba->host->can_queue)) {
923 printk(KERN_WARNING DRV_NAME
924 "(%s): invalid tag\n", pci_name(hba->pdev));
925 continue;
926 }
927
928 hba->out_req_cnt--;
929 ccb = &hba->ccb[tag];
930 if (unlikely(hba->wait_ccb == ccb))
931 hba->wait_ccb = NULL;
932 if (unlikely(ccb->req == NULL)) {
933 printk(KERN_WARNING DRV_NAME
934 "(%s): lagging req\n", pci_name(hba->pdev));
935 continue;
936 }
937
938 ccb->req = NULL;
939 if (likely(value & SS_STS_DONE)) { /* normal case */
940 ccb->srb_status = SRB_STATUS_SUCCESS;
941 ccb->scsi_status = SAM_STAT_GOOD;
942 } else {
943 ccb->srb_status = resp->srb_status;
944 ccb->scsi_status = resp->scsi_status;
945 size = resp->payload_sz * sizeof(u32);
946 if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN ||
947 size > sizeof(*resp))) {
948 printk(KERN_WARNING DRV_NAME
949 "(%s): bad status size\n",
950 pci_name(hba->pdev));
951 } else {
952 size -= sizeof(*resp) - STATUS_VAR_LEN;
953 if (size)
954 stex_copy_data(ccb, resp, size);
955 }
956 if (likely(ccb->cmd != NULL))
957 stex_check_cmd(hba, ccb, resp);
958 }
959
960 if (likely(ccb->cmd != NULL)) {
961 scsi_dma_unmap(ccb->cmd);
962 stex_scsi_done(ccb);
963 } else
964 ccb->req_type = 0;
965 }
966 }
967
968 static irqreturn_t stex_ss_intr(int irq, void *__hba)
969 {
970 struct st_hba *hba = __hba;
971 void __iomem *base = hba->mmio_base;
972 u32 data;
973 unsigned long flags;
974
975 spin_lock_irqsave(hba->host->host_lock, flags);
976
977 data = readl(base + YI2H_INT);
978 if (data && data != 0xffffffff) {
979 /* clear the interrupt */
980 writel(data, base + YI2H_INT_C);
981 stex_ss_mu_intr(hba);
982 spin_unlock_irqrestore(hba->host->host_lock, flags);
983 if (unlikely(data & SS_I2H_REQUEST_RESET))
984 queue_work(hba->work_q, &hba->reset_work);
985 return IRQ_HANDLED;
986 }
987
988 spin_unlock_irqrestore(hba->host->host_lock, flags);
989
990 return IRQ_NONE;
991 }
992
993 static int stex_common_handshake(struct st_hba *hba)
994 {
995 void __iomem *base = hba->mmio_base;
996 struct handshake_frame *h;
997 dma_addr_t status_phys;
998 u32 data;
999 unsigned long before;
1000
1001 if (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
1002 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
1003 readl(base + IDBL);
1004 before = jiffies;
1005 while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
1006 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
1007 printk(KERN_ERR DRV_NAME
1008 "(%s): no handshake signature\n",
1009 pci_name(hba->pdev));
1010 return -1;
1011 }
1012 rmb();
1013 msleep(1);
1014 }
1015 }
1016
1017 udelay(10);
1018
1019 data = readl(base + OMR1);
1020 if ((data & 0xffff0000) == MU_HANDSHAKE_SIGNATURE_HALF) {
1021 data &= 0x0000ffff;
1022 if (hba->host->can_queue > data) {
1023 hba->host->can_queue = data;
1024 hba->host->cmd_per_lun = data;
1025 }
1026 }
1027
1028 h = (struct handshake_frame *)hba->status_buffer;
1029 h->rb_phy = cpu_to_le64(hba->dma_handle);
1030 h->req_sz = cpu_to_le16(hba->rq_size);
1031 h->req_cnt = cpu_to_le16(hba->rq_count+1);
1032 h->status_sz = cpu_to_le16(sizeof(struct status_msg));
1033 h->status_cnt = cpu_to_le16(hba->sts_count+1);
1034 h->hosttime = cpu_to_le64(ktime_get_real_seconds());
1035 h->partner_type = HMU_PARTNER_TYPE;
1036 if (hba->extra_offset) {
1037 h->extra_offset = cpu_to_le32(hba->extra_offset);
1038 h->extra_size = cpu_to_le32(hba->dma_size - hba->extra_offset);
1039 } else
1040 h->extra_offset = h->extra_size = 0;
1041
1042 status_phys = hba->dma_handle + (hba->rq_count+1) * hba->rq_size;
1043 writel(status_phys, base + IMR0);
1044 readl(base + IMR0);
1045 writel((status_phys >> 16) >> 16, base + IMR1);
1046 readl(base + IMR1);
1047
1048 writel((status_phys >> 16) >> 16, base + OMR0); /* old fw compatible */
1049 readl(base + OMR0);
1050 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
1051 readl(base + IDBL); /* flush */
1052
1053 udelay(10);
1054 before = jiffies;
1055 while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
1056 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
1057 printk(KERN_ERR DRV_NAME
1058 "(%s): no signature after handshake frame\n",
1059 pci_name(hba->pdev));
1060 return -1;
1061 }
1062 rmb();
1063 msleep(1);
1064 }
1065
1066 writel(0, base + IMR0);
1067 readl(base + IMR0);
1068 writel(0, base + OMR0);
1069 readl(base + OMR0);
1070 writel(0, base + IMR1);
1071 readl(base + IMR1);
1072 writel(0, base + OMR1);
1073 readl(base + OMR1); /* flush */
1074 return 0;
1075 }
1076
1077 static int stex_ss_handshake(struct st_hba *hba)
1078 {
1079 void __iomem *base = hba->mmio_base;
1080 struct st_msg_header *msg_h;
1081 struct handshake_frame *h;
1082 __le32 *scratch;
1083 u32 data, scratch_size;
1084 unsigned long before;
1085 int ret = 0;
1086
1087 before = jiffies;
1088 while ((readl(base + YIOA_STATUS) & SS_MU_OPERATIONAL) == 0) {
1089 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
1090 printk(KERN_ERR DRV_NAME
1091 "(%s): firmware not operational\n",
1092 pci_name(hba->pdev));
1093 return -1;
1094 }
1095 msleep(1);
1096 }
1097
1098 msg_h = (struct st_msg_header *)hba->dma_mem;
1099 msg_h->handle = cpu_to_le64(hba->dma_handle);
1100 msg_h->flag = SS_HEAD_HANDSHAKE;
1101
1102 h = (struct handshake_frame *)(msg_h + 1);
1103 h->rb_phy = cpu_to_le64(hba->dma_handle);
1104 h->req_sz = cpu_to_le16(hba->rq_size);
1105 h->req_cnt = cpu_to_le16(hba->rq_count+1);
1106 h->status_sz = cpu_to_le16(sizeof(struct status_msg));
1107 h->status_cnt = cpu_to_le16(hba->sts_count+1);
1108 h->hosttime = cpu_to_le64(ktime_get_real_seconds());
1109 h->partner_type = HMU_PARTNER_TYPE;
1110 h->extra_offset = h->extra_size = 0;
1111 scratch_size = (hba->sts_count+1)*sizeof(u32);
1112 h->scratch_size = cpu_to_le32(scratch_size);
1113
1114 data = readl(base + YINT_EN);
1115 data &= ~4;
1116 writel(data, base + YINT_EN);
1117 writel((hba->dma_handle >> 16) >> 16, base + YH2I_REQ_HI);
1118 readl(base + YH2I_REQ_HI);
1119 writel(hba->dma_handle, base + YH2I_REQ);
1120 readl(base + YH2I_REQ); /* flush */
1121
1122 scratch = hba->scratch;
1123 before = jiffies;
1124 while (!(le32_to_cpu(*scratch) & SS_STS_HANDSHAKE)) {
1125 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
1126 printk(KERN_ERR DRV_NAME
1127 "(%s): no signature after handshake frame\n",
1128 pci_name(hba->pdev));
1129 ret = -1;
1130 break;
1131 }
1132 rmb();
1133 msleep(1);
1134 }
1135
1136 memset(scratch, 0, scratch_size);
1137 msg_h->flag = 0;
1138 return ret;
1139 }
1140
1141 static int stex_handshake(struct st_hba *hba)
1142 {
1143 int err;
1144 unsigned long flags;
1145 unsigned int mu_status;
1146
1147 err = (hba->cardtype == st_yel) ?
1148 stex_ss_handshake(hba) : stex_common_handshake(hba);
1149 spin_lock_irqsave(hba->host->host_lock, flags);
1150 mu_status = hba->mu_status;
1151 if (err == 0) {
1152 hba->req_head = 0;
1153 hba->req_tail = 0;
1154 hba->status_head = 0;
1155 hba->status_tail = 0;
1156 hba->out_req_cnt = 0;
1157 hba->mu_status = MU_STATE_STARTED;
1158 } else
1159 hba->mu_status = MU_STATE_FAILED;
1160 if (mu_status == MU_STATE_RESETTING)
1161 wake_up_all(&hba->reset_waitq);
1162 spin_unlock_irqrestore(hba->host->host_lock, flags);
1163 return err;
1164 }
1165
1166 static int stex_abort(struct scsi_cmnd *cmd)
1167 {
1168 struct Scsi_Host *host = cmd->device->host;
1169 struct st_hba *hba = (struct st_hba *)host->hostdata;
1170 u16 tag = cmd->request->tag;
1171 void __iomem *base;
1172 u32 data;
1173 int result = SUCCESS;
1174 unsigned long flags;
1175
1176 scmd_printk(KERN_INFO, cmd, "aborting command\n");
1177
1178 base = hba->mmio_base;
1179 spin_lock_irqsave(host->host_lock, flags);
1180 if (tag < host->can_queue &&
1181 hba->ccb[tag].req && hba->ccb[tag].cmd == cmd)
1182 hba->wait_ccb = &hba->ccb[tag];
1183 else
1184 goto out;
1185
1186 if (hba->cardtype == st_yel) {
1187 data = readl(base + YI2H_INT);
1188 if (data == 0 || data == 0xffffffff)
1189 goto fail_out;
1190
1191 writel(data, base + YI2H_INT_C);
1192 stex_ss_mu_intr(hba);
1193 } else {
1194 data = readl(base + ODBL);
1195 if (data == 0 || data == 0xffffffff)
1196 goto fail_out;
1197
1198 writel(data, base + ODBL);
1199 readl(base + ODBL); /* flush */
1200
1201 stex_mu_intr(hba, data);
1202 }
1203 if (hba->wait_ccb == NULL) {
1204 printk(KERN_WARNING DRV_NAME
1205 "(%s): lost interrupt\n", pci_name(hba->pdev));
1206 goto out;
1207 }
1208
1209 fail_out:
1210 scsi_dma_unmap(cmd);
1211 hba->wait_ccb->req = NULL; /* nullify the req's future return */
1212 hba->wait_ccb = NULL;
1213 result = FAILED;
1214 out:
1215 spin_unlock_irqrestore(host->host_lock, flags);
1216 return result;
1217 }
1218
1219 static void stex_hard_reset(struct st_hba *hba)
1220 {
1221 struct pci_bus *bus;
1222 int i;
1223 u16 pci_cmd;
1224 u8 pci_bctl;
1225
1226 for (i = 0; i < 16; i++)
1227 pci_read_config_dword(hba->pdev, i * 4,
1228 &hba->pdev->saved_config_space[i]);
1229
1230 /* Reset secondary bus. Our controller(MU/ATU) is the only device on
1231 secondary bus. Consult Intel 80331/3 developer's manual for detail */
1232 bus = hba->pdev->bus;
1233 pci_read_config_byte(bus->self, PCI_BRIDGE_CONTROL, &pci_bctl);
1234 pci_bctl |= PCI_BRIDGE_CTL_BUS_RESET;
1235 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
1236
1237 /*
1238 * 1 ms may be enough for 8-port controllers. But 16-port controllers
1239 * require more time to finish bus reset. Use 100 ms here for safety
1240 */
1241 msleep(100);
1242 pci_bctl &= ~PCI_BRIDGE_CTL_BUS_RESET;
1243 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
1244
1245 for (i = 0; i < MU_HARD_RESET_WAIT; i++) {
1246 pci_read_config_word(hba->pdev, PCI_COMMAND, &pci_cmd);
1247 if (pci_cmd != 0xffff && (pci_cmd & PCI_COMMAND_MASTER))
1248 break;
1249 msleep(1);
1250 }
1251
1252 ssleep(5);
1253 for (i = 0; i < 16; i++)
1254 pci_write_config_dword(hba->pdev, i * 4,
1255 hba->pdev->saved_config_space[i]);
1256 }
1257
1258 static int stex_yos_reset(struct st_hba *hba)
1259 {
1260 void __iomem *base;
1261 unsigned long flags, before;
1262 int ret = 0;
1263
1264 base = hba->mmio_base;
1265 writel(MU_INBOUND_DOORBELL_RESET, base + IDBL);
1266 readl(base + IDBL); /* flush */
1267 before = jiffies;
1268 while (hba->out_req_cnt > 0) {
1269 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) {
1270 printk(KERN_WARNING DRV_NAME
1271 "(%s): reset timeout\n", pci_name(hba->pdev));
1272 ret = -1;
1273 break;
1274 }
1275 msleep(1);
1276 }
1277
1278 spin_lock_irqsave(hba->host->host_lock, flags);
1279 if (ret == -1)
1280 hba->mu_status = MU_STATE_FAILED;
1281 else
1282 hba->mu_status = MU_STATE_STARTED;
1283 wake_up_all(&hba->reset_waitq);
1284 spin_unlock_irqrestore(hba->host->host_lock, flags);
1285
1286 return ret;
1287 }
1288
1289 static void stex_ss_reset(struct st_hba *hba)
1290 {
1291 writel(SS_H2I_INT_RESET, hba->mmio_base + YH2I_INT);
1292 readl(hba->mmio_base + YH2I_INT);
1293 ssleep(5);
1294 }
1295
1296 static int stex_do_reset(struct st_hba *hba)
1297 {
1298 unsigned long flags;
1299 unsigned int mu_status = MU_STATE_RESETTING;
1300
1301 spin_lock_irqsave(hba->host->host_lock, flags);
1302 if (hba->mu_status == MU_STATE_STARTING) {
1303 spin_unlock_irqrestore(hba->host->host_lock, flags);
1304 printk(KERN_INFO DRV_NAME "(%s): request reset during init\n",
1305 pci_name(hba->pdev));
1306 return 0;
1307 }
1308 while (hba->mu_status == MU_STATE_RESETTING) {
1309 spin_unlock_irqrestore(hba->host->host_lock, flags);
1310 wait_event_timeout(hba->reset_waitq,
1311 hba->mu_status != MU_STATE_RESETTING,
1312 MU_MAX_DELAY * HZ);
1313 spin_lock_irqsave(hba->host->host_lock, flags);
1314 mu_status = hba->mu_status;
1315 }
1316
1317 if (mu_status != MU_STATE_RESETTING) {
1318 spin_unlock_irqrestore(hba->host->host_lock, flags);
1319 return (mu_status == MU_STATE_STARTED) ? 0 : -1;
1320 }
1321
1322 hba->mu_status = MU_STATE_RESETTING;
1323 spin_unlock_irqrestore(hba->host->host_lock, flags);
1324
1325 if (hba->cardtype == st_yosemite)
1326 return stex_yos_reset(hba);
1327
1328 if (hba->cardtype == st_shasta)
1329 stex_hard_reset(hba);
1330 else if (hba->cardtype == st_yel)
1331 stex_ss_reset(hba);
1332
1333
1334 return_abnormal_state(hba, DID_RESET);
1335
1336 if (stex_handshake(hba) == 0)
1337 return 0;
1338
1339 printk(KERN_WARNING DRV_NAME "(%s): resetting: handshake failed\n",
1340 pci_name(hba->pdev));
1341 return -1;
1342 }
1343
1344 static int stex_reset(struct scsi_cmnd *cmd)
1345 {
1346 struct st_hba *hba;
1347
1348 hba = (struct st_hba *) &cmd->device->host->hostdata[0];
1349
1350 shost_printk(KERN_INFO, cmd->device->host,
1351 "resetting host\n");
1352
1353 return stex_do_reset(hba) ? FAILED : SUCCESS;
1354 }
1355
1356 static void stex_reset_work(struct work_struct *work)
1357 {
1358 struct st_hba *hba = container_of(work, struct st_hba, reset_work);
1359
1360 stex_do_reset(hba);
1361 }
1362
1363 static int stex_biosparam(struct scsi_device *sdev,
1364 struct block_device *bdev, sector_t capacity, int geom[])
1365 {
1366 int heads = 255, sectors = 63;
1367
1368 if (capacity < 0x200000) {
1369 heads = 64;
1370 sectors = 32;
1371 }
1372
1373 sector_div(capacity, heads * sectors);
1374
1375 geom[0] = heads;
1376 geom[1] = sectors;
1377 geom[2] = capacity;
1378
1379 return 0;
1380 }
1381
1382 static struct scsi_host_template driver_template = {
1383 .module = THIS_MODULE,
1384 .name = DRV_NAME,
1385 .proc_name = DRV_NAME,
1386 .bios_param = stex_biosparam,
1387 .queuecommand = stex_queuecommand,
1388 .slave_configure = stex_slave_config,
1389 .eh_abort_handler = stex_abort,
1390 .eh_host_reset_handler = stex_reset,
1391 .this_id = -1,
1392 };
1393
1394 static struct pci_device_id stex_pci_tbl[] = {
1395 /* st_shasta */
1396 { 0x105a, 0x8350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1397 st_shasta }, /* SuperTrak EX8350/8300/16350/16300 */
1398 { 0x105a, 0xc350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1399 st_shasta }, /* SuperTrak EX12350 */
1400 { 0x105a, 0x4302, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1401 st_shasta }, /* SuperTrak EX4350 */
1402 { 0x105a, 0xe350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1403 st_shasta }, /* SuperTrak EX24350 */
1404
1405 /* st_vsc */
1406 { 0x105a, 0x7250, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_vsc },
1407
1408 /* st_yosemite */
1409 { 0x105a, 0x8650, 0x105a, PCI_ANY_ID, 0, 0, st_yosemite },
1410
1411 /* st_seq */
1412 { 0x105a, 0x3360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_seq },
1413
1414 /* st_yel */
1415 { 0x105a, 0x8650, 0x1033, PCI_ANY_ID, 0, 0, st_yel },
1416 { 0x105a, 0x8760, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_yel },
1417 { } /* terminate list */
1418 };
1419
1420 static struct st_card_info stex_card_info[] = {
1421 /* st_shasta */
1422 {
1423 .max_id = 17,
1424 .max_lun = 8,
1425 .max_channel = 0,
1426 .rq_count = 32,
1427 .rq_size = 1048,
1428 .sts_count = 32,
1429 .alloc_rq = stex_alloc_req,
1430 .map_sg = stex_map_sg,
1431 .send = stex_send_cmd,
1432 },
1433
1434 /* st_vsc */
1435 {
1436 .max_id = 129,
1437 .max_lun = 1,
1438 .max_channel = 0,
1439 .rq_count = 32,
1440 .rq_size = 1048,
1441 .sts_count = 32,
1442 .alloc_rq = stex_alloc_req,
1443 .map_sg = stex_map_sg,
1444 .send = stex_send_cmd,
1445 },
1446
1447 /* st_yosemite */
1448 {
1449 .max_id = 2,
1450 .max_lun = 256,
1451 .max_channel = 0,
1452 .rq_count = 256,
1453 .rq_size = 1048,
1454 .sts_count = 256,
1455 .alloc_rq = stex_alloc_req,
1456 .map_sg = stex_map_sg,
1457 .send = stex_send_cmd,
1458 },
1459
1460 /* st_seq */
1461 {
1462 .max_id = 129,
1463 .max_lun = 1,
1464 .max_channel = 0,
1465 .rq_count = 32,
1466 .rq_size = 1048,
1467 .sts_count = 32,
1468 .alloc_rq = stex_alloc_req,
1469 .map_sg = stex_map_sg,
1470 .send = stex_send_cmd,
1471 },
1472
1473 /* st_yel */
1474 {
1475 .max_id = 129,
1476 .max_lun = 256,
1477 .max_channel = 3,
1478 .rq_count = 801,
1479 .rq_size = 512,
1480 .sts_count = 801,
1481 .alloc_rq = stex_ss_alloc_req,
1482 .map_sg = stex_ss_map_sg,
1483 .send = stex_ss_send_cmd,
1484 },
1485 };
1486
1487 static int stex_set_dma_mask(struct pci_dev * pdev)
1488 {
1489 int ret;
1490
1491 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))
1492 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
1493 return 0;
1494 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1495 if (!ret)
1496 ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
1497 return ret;
1498 }
1499
1500 static int stex_request_irq(struct st_hba *hba)
1501 {
1502 struct pci_dev *pdev = hba->pdev;
1503 int status;
1504
1505 if (msi) {
1506 status = pci_enable_msi(pdev);
1507 if (status != 0)
1508 printk(KERN_ERR DRV_NAME
1509 "(%s): error %d setting up MSI\n",
1510 pci_name(pdev), status);
1511 else
1512 hba->msi_enabled = 1;
1513 } else
1514 hba->msi_enabled = 0;
1515
1516 status = request_irq(pdev->irq, hba->cardtype == st_yel ?
1517 stex_ss_intr : stex_intr, IRQF_SHARED, DRV_NAME, hba);
1518
1519 if (status != 0) {
1520 if (hba->msi_enabled)
1521 pci_disable_msi(pdev);
1522 }
1523 return status;
1524 }
1525
1526 static void stex_free_irq(struct st_hba *hba)
1527 {
1528 struct pci_dev *pdev = hba->pdev;
1529
1530 free_irq(pdev->irq, hba);
1531 if (hba->msi_enabled)
1532 pci_disable_msi(pdev);
1533 }
1534
1535 static int stex_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1536 {
1537 struct st_hba *hba;
1538 struct Scsi_Host *host;
1539 const struct st_card_info *ci = NULL;
1540 u32 sts_offset, cp_offset, scratch_offset;
1541 int err;
1542
1543 err = pci_enable_device(pdev);
1544 if (err)
1545 return err;
1546
1547 pci_set_master(pdev);
1548
1549 host = scsi_host_alloc(&driver_template, sizeof(struct st_hba));
1550
1551 if (!host) {
1552 printk(KERN_ERR DRV_NAME "(%s): scsi_host_alloc failed\n",
1553 pci_name(pdev));
1554 err = -ENOMEM;
1555 goto out_disable;
1556 }
1557
1558 hba = (struct st_hba *)host->hostdata;
1559 memset(hba, 0, sizeof(struct st_hba));
1560
1561 err = pci_request_regions(pdev, DRV_NAME);
1562 if (err < 0) {
1563 printk(KERN_ERR DRV_NAME "(%s): request regions failed\n",
1564 pci_name(pdev));
1565 goto out_scsi_host_put;
1566 }
1567
1568 hba->mmio_base = pci_ioremap_bar(pdev, 0);
1569 if ( !hba->mmio_base) {
1570 printk(KERN_ERR DRV_NAME "(%s): memory map failed\n",
1571 pci_name(pdev));
1572 err = -ENOMEM;
1573 goto out_release_regions;
1574 }
1575
1576 err = stex_set_dma_mask(pdev);
1577 if (err) {
1578 printk(KERN_ERR DRV_NAME "(%s): set dma mask failed\n",
1579 pci_name(pdev));
1580 goto out_iounmap;
1581 }
1582
1583 hba->cardtype = (unsigned int) id->driver_data;
1584 ci = &stex_card_info[hba->cardtype];
1585 switch (id->subdevice) {
1586 case 0x4221:
1587 case 0x4222:
1588 case 0x4223:
1589 case 0x4224:
1590 case 0x4225:
1591 case 0x4226:
1592 case 0x4227:
1593 case 0x4261:
1594 case 0x4262:
1595 case 0x4263:
1596 case 0x4264:
1597 case 0x4265:
1598 break;
1599 default:
1600 if (hba->cardtype == st_yel)
1601 hba->supports_pm = 1;
1602 }
1603
1604 sts_offset = scratch_offset = (ci->rq_count+1) * ci->rq_size;
1605 if (hba->cardtype == st_yel)
1606 sts_offset += (ci->sts_count+1) * sizeof(u32);
1607 cp_offset = sts_offset + (ci->sts_count+1) * sizeof(struct status_msg);
1608 hba->dma_size = cp_offset + sizeof(struct st_frame);
1609 if (hba->cardtype == st_seq ||
1610 (hba->cardtype == st_vsc && (pdev->subsystem_device & 1))) {
1611 hba->extra_offset = hba->dma_size;
1612 hba->dma_size += ST_ADDITIONAL_MEM;
1613 }
1614 hba->dma_mem = dma_alloc_coherent(&pdev->dev,
1615 hba->dma_size, &hba->dma_handle, GFP_KERNEL);
1616 if (!hba->dma_mem) {
1617 /* Retry minimum coherent mapping for st_seq and st_vsc */
1618 if (hba->cardtype == st_seq ||
1619 (hba->cardtype == st_vsc && (pdev->subsystem_device & 1))) {
1620 printk(KERN_WARNING DRV_NAME
1621 "(%s): allocating min buffer for controller\n",
1622 pci_name(pdev));
1623 hba->dma_size = hba->extra_offset
1624 + ST_ADDITIONAL_MEM_MIN;
1625 hba->dma_mem = dma_alloc_coherent(&pdev->dev,
1626 hba->dma_size, &hba->dma_handle, GFP_KERNEL);
1627 }
1628
1629 if (!hba->dma_mem) {
1630 err = -ENOMEM;
1631 printk(KERN_ERR DRV_NAME "(%s): dma mem alloc failed\n",
1632 pci_name(pdev));
1633 goto out_iounmap;
1634 }
1635 }
1636
1637 hba->ccb = kcalloc(ci->rq_count, sizeof(struct st_ccb), GFP_KERNEL);
1638 if (!hba->ccb) {
1639 err = -ENOMEM;
1640 printk(KERN_ERR DRV_NAME "(%s): ccb alloc failed\n",
1641 pci_name(pdev));
1642 goto out_pci_free;
1643 }
1644
1645 if (hba->cardtype == st_yel)
1646 hba->scratch = (__le32 *)(hba->dma_mem + scratch_offset);
1647 hba->status_buffer = (struct status_msg *)(hba->dma_mem + sts_offset);
1648 hba->copy_buffer = hba->dma_mem + cp_offset;
1649 hba->rq_count = ci->rq_count;
1650 hba->rq_size = ci->rq_size;
1651 hba->sts_count = ci->sts_count;
1652 hba->alloc_rq = ci->alloc_rq;
1653 hba->map_sg = ci->map_sg;
1654 hba->send = ci->send;
1655 hba->mu_status = MU_STATE_STARTING;
1656
1657 if (hba->cardtype == st_yel)
1658 host->sg_tablesize = 38;
1659 else
1660 host->sg_tablesize = 32;
1661 host->can_queue = ci->rq_count;
1662 host->cmd_per_lun = ci->rq_count;
1663 host->max_id = ci->max_id;
1664 host->max_lun = ci->max_lun;
1665 host->max_channel = ci->max_channel;
1666 host->unique_id = host->host_no;
1667 host->max_cmd_len = STEX_CDB_LENGTH;
1668
1669 hba->host = host;
1670 hba->pdev = pdev;
1671 init_waitqueue_head(&hba->reset_waitq);
1672
1673 snprintf(hba->work_q_name, sizeof(hba->work_q_name),
1674 "stex_wq_%d", host->host_no);
1675 hba->work_q = create_singlethread_workqueue(hba->work_q_name);
1676 if (!hba->work_q) {
1677 printk(KERN_ERR DRV_NAME "(%s): create workqueue failed\n",
1678 pci_name(pdev));
1679 err = -ENOMEM;
1680 goto out_ccb_free;
1681 }
1682 INIT_WORK(&hba->reset_work, stex_reset_work);
1683
1684 err = stex_request_irq(hba);
1685 if (err) {
1686 printk(KERN_ERR DRV_NAME "(%s): request irq failed\n",
1687 pci_name(pdev));
1688 goto out_free_wq;
1689 }
1690
1691 err = stex_handshake(hba);
1692 if (err)
1693 goto out_free_irq;
1694
1695 pci_set_drvdata(pdev, hba);
1696
1697 err = scsi_add_host(host, &pdev->dev);
1698 if (err) {
1699 printk(KERN_ERR DRV_NAME "(%s): scsi_add_host failed\n",
1700 pci_name(pdev));
1701 goto out_free_irq;
1702 }
1703
1704 scsi_scan_host(host);
1705
1706 return 0;
1707
1708 out_free_irq:
1709 stex_free_irq(hba);
1710 out_free_wq:
1711 destroy_workqueue(hba->work_q);
1712 out_ccb_free:
1713 kfree(hba->ccb);
1714 out_pci_free:
1715 dma_free_coherent(&pdev->dev, hba->dma_size,
1716 hba->dma_mem, hba->dma_handle);
1717 out_iounmap:
1718 iounmap(hba->mmio_base);
1719 out_release_regions:
1720 pci_release_regions(pdev);
1721 out_scsi_host_put:
1722 scsi_host_put(host);
1723 out_disable:
1724 pci_disable_device(pdev);
1725
1726 return err;
1727 }
1728
1729 static void stex_hba_stop(struct st_hba *hba, int st_sleep_mic)
1730 {
1731 struct req_msg *req;
1732 struct st_msg_header *msg_h;
1733 unsigned long flags;
1734 unsigned long before;
1735 u16 tag = 0;
1736
1737 spin_lock_irqsave(hba->host->host_lock, flags);
1738
1739 if (hba->cardtype == st_yel && hba->supports_pm == 1)
1740 {
1741 if(st_sleep_mic == ST_NOTHANDLED)
1742 {
1743 spin_unlock_irqrestore(hba->host->host_lock, flags);
1744 return;
1745 }
1746 }
1747 req = hba->alloc_rq(hba);
1748 if (hba->cardtype == st_yel) {
1749 msg_h = (struct st_msg_header *)req - 1;
1750 memset(msg_h, 0, hba->rq_size);
1751 } else
1752 memset(req, 0, hba->rq_size);
1753
1754 if ((hba->cardtype == st_yosemite || hba->cardtype == st_yel)
1755 && st_sleep_mic == ST_IGNORED) {
1756 req->cdb[0] = MGT_CMD;
1757 req->cdb[1] = MGT_CMD_SIGNATURE;
1758 req->cdb[2] = CTLR_CONFIG_CMD;
1759 req->cdb[3] = CTLR_SHUTDOWN;
1760 } else if (hba->cardtype == st_yel && st_sleep_mic != ST_IGNORED) {
1761 req->cdb[0] = MGT_CMD;
1762 req->cdb[1] = MGT_CMD_SIGNATURE;
1763 req->cdb[2] = CTLR_CONFIG_CMD;
1764 req->cdb[3] = PMIC_SHUTDOWN;
1765 req->cdb[4] = st_sleep_mic;
1766 } else {
1767 req->cdb[0] = CONTROLLER_CMD;
1768 req->cdb[1] = CTLR_POWER_STATE_CHANGE;
1769 req->cdb[2] = CTLR_POWER_SAVING;
1770 }
1771
1772 hba->ccb[tag].cmd = NULL;
1773 hba->ccb[tag].sg_count = 0;
1774 hba->ccb[tag].sense_bufflen = 0;
1775 hba->ccb[tag].sense_buffer = NULL;
1776 hba->ccb[tag].req_type = PASSTHRU_REQ_TYPE;
1777
1778 hba->send(hba, req, tag);
1779 spin_unlock_irqrestore(hba->host->host_lock, flags);
1780
1781 before = jiffies;
1782 while (hba->ccb[tag].req_type & PASSTHRU_REQ_TYPE) {
1783 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) {
1784 hba->ccb[tag].req_type = 0;
1785 hba->mu_status = MU_STATE_STOP;
1786 return;
1787 }
1788 msleep(1);
1789 }
1790 hba->mu_status = MU_STATE_STOP;
1791 }
1792
1793 static void stex_hba_free(struct st_hba *hba)
1794 {
1795 stex_free_irq(hba);
1796
1797 destroy_workqueue(hba->work_q);
1798
1799 iounmap(hba->mmio_base);
1800
1801 pci_release_regions(hba->pdev);
1802
1803 kfree(hba->ccb);
1804
1805 dma_free_coherent(&hba->pdev->dev, hba->dma_size,
1806 hba->dma_mem, hba->dma_handle);
1807 }
1808
1809 static void stex_remove(struct pci_dev *pdev)
1810 {
1811 struct st_hba *hba = pci_get_drvdata(pdev);
1812
1813 hba->mu_status = MU_STATE_NOCONNECT;
1814 return_abnormal_state(hba, DID_NO_CONNECT);
1815 scsi_remove_host(hba->host);
1816
1817 scsi_block_requests(hba->host);
1818
1819 stex_hba_free(hba);
1820
1821 scsi_host_put(hba->host);
1822
1823 pci_disable_device(pdev);
1824 }
1825
1826 static void stex_shutdown(struct pci_dev *pdev)
1827 {
1828 struct st_hba *hba = pci_get_drvdata(pdev);
1829
1830 if (hba->supports_pm == 0)
1831 stex_hba_stop(hba, ST_IGNORED);
1832 else
1833 stex_hba_stop(hba, ST_S5);
1834 }
1835
1836 static int stex_choice_sleep_mic(pm_message_t state)
1837 {
1838 switch (state.event) {
1839 case PM_EVENT_SUSPEND:
1840 return ST_S3;
1841 case PM_EVENT_HIBERNATE:
1842 return ST_S4;
1843 default:
1844 return ST_NOTHANDLED;
1845 }
1846 }
1847
1848 static int stex_suspend(struct pci_dev *pdev, pm_message_t state)
1849 {
1850 struct st_hba *hba = pci_get_drvdata(pdev);
1851
1852 if (hba->cardtype == st_yel && hba->supports_pm == 1)
1853 stex_hba_stop(hba, stex_choice_sleep_mic(state));
1854 else
1855 stex_hba_stop(hba, ST_IGNORED);
1856 return 0;
1857 }
1858
1859 static int stex_resume(struct pci_dev *pdev)
1860 {
1861 struct st_hba *hba = pci_get_drvdata(pdev);
1862
1863 hba->mu_status = MU_STATE_STARTING;
1864 stex_handshake(hba);
1865 return 0;
1866 }
1867 MODULE_DEVICE_TABLE(pci, stex_pci_tbl);
1868
1869 static struct pci_driver stex_pci_driver = {
1870 .name = DRV_NAME,
1871 .id_table = stex_pci_tbl,
1872 .probe = stex_probe,
1873 .remove = stex_remove,
1874 .shutdown = stex_shutdown,
1875 .suspend = stex_suspend,
1876 .resume = stex_resume,
1877 };
1878
1879 static int __init stex_init(void)
1880 {
1881 printk(KERN_INFO DRV_NAME
1882 ": Promise SuperTrak EX Driver version: %s\n",
1883 ST_DRIVER_VERSION);
1884
1885 return pci_register_driver(&stex_pci_driver);
1886 }
1887
1888 static void __exit stex_exit(void)
1889 {
1890 pci_unregister_driver(&stex_pci_driver);
1891 }
1892
1893 module_init(stex_init);
1894 module_exit(stex_exit);
Linux with added FPC-III support