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