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net: net_assign_generic() fix
[linux-2.6/mini2440.git] / drivers / scsi / stex.c
blob8d2a95c4e5b56af930c46a76d760e53a9c9931a9
1 /*
2 * SuperTrak EX Series Storage Controller driver for Linux
3 *
4 * Copyright (C) 2005-2009 Promise Technology Inc.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 * Written By:
12 * Ed Lin <promise_linux@promise.com>
13 *
14 */
15
16 #include <linux/init.h>
17 #include <linux/errno.h>
18 #include <linux/kernel.h>
19 #include <linux/delay.h>
20 #include <linux/time.h>
21 #include <linux/pci.h>
22 #include <linux/blkdev.h>
23 #include <linux/interrupt.h>
24 #include <linux/types.h>
25 #include <linux/module.h>
26 #include <linux/spinlock.h>
27 #include <asm/io.h>
28 #include <asm/irq.h>
29 #include <asm/byteorder.h>
30 #include <scsi/scsi.h>
31 #include <scsi/scsi_device.h>
32 #include <scsi/scsi_cmnd.h>
33 #include <scsi/scsi_host.h>
34 #include <scsi/scsi_tcq.h>
35 #include <scsi/scsi_dbg.h>
36 #include <scsi/scsi_eh.h>
37
38 #define DRV_NAME "stex"
39 #define ST_DRIVER_VERSION "4.6.0000.3"
40 #define ST_VER_MAJOR 4
41 #define ST_VER_MINOR 6
42 #define ST_OEM 0
43 #define ST_BUILD_VER 3
44
45 enum {
46 /* MU register offset */
47 IMR0 = 0x10, /* MU_INBOUND_MESSAGE_REG0 */
48 IMR1 = 0x14, /* MU_INBOUND_MESSAGE_REG1 */
49 OMR0 = 0x18, /* MU_OUTBOUND_MESSAGE_REG0 */
50 OMR1 = 0x1c, /* MU_OUTBOUND_MESSAGE_REG1 */
51 IDBL = 0x20, /* MU_INBOUND_DOORBELL */
52 IIS = 0x24, /* MU_INBOUND_INTERRUPT_STATUS */
53 IIM = 0x28, /* MU_INBOUND_INTERRUPT_MASK */
54 ODBL = 0x2c, /* MU_OUTBOUND_DOORBELL */
55 OIS = 0x30, /* MU_OUTBOUND_INTERRUPT_STATUS */
56 OIM = 0x3c, /* MU_OUTBOUND_INTERRUPT_MASK */
57
58 YH2I_INT = 0x20,
59 YINT_EN = 0x34,
60 YI2H_INT = 0x9c,
61 YI2H_INT_C = 0xa0,
62 YH2I_REQ = 0xc0,
63 YH2I_REQ_HI = 0xc4,
64
65 /* MU register value */
66 MU_INBOUND_DOORBELL_HANDSHAKE = 1,
67 MU_INBOUND_DOORBELL_REQHEADCHANGED = 2,
68 MU_INBOUND_DOORBELL_STATUSTAILCHANGED = 4,
69 MU_INBOUND_DOORBELL_HMUSTOPPED = 8,
70 MU_INBOUND_DOORBELL_RESET = 16,
71
72 MU_OUTBOUND_DOORBELL_HANDSHAKE = 1,
73 MU_OUTBOUND_DOORBELL_REQUESTTAILCHANGED = 2,
74 MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED = 4,
75 MU_OUTBOUND_DOORBELL_BUSCHANGE = 8,
76 MU_OUTBOUND_DOORBELL_HASEVENT = 16,
77
78 /* MU status code */
79 MU_STATE_STARTING = 1,
80 MU_STATE_FMU_READY_FOR_HANDSHAKE = 2,
81 MU_STATE_SEND_HANDSHAKE_FRAME = 3,
82 MU_STATE_STARTED = 4,
83 MU_STATE_RESETTING = 5,
84
85 MU_MAX_DELAY = 120,
86 MU_HANDSHAKE_SIGNATURE = 0x55aaaa55,
87 MU_HANDSHAKE_SIGNATURE_HALF = 0x5a5a0000,
88 MU_HARD_RESET_WAIT = 30000,
89 HMU_PARTNER_TYPE = 2,
90
91 /* firmware returned values */
92 SRB_STATUS_SUCCESS = 0x01,
93 SRB_STATUS_ERROR = 0x04,
94 SRB_STATUS_BUSY = 0x05,
95 SRB_STATUS_INVALID_REQUEST = 0x06,
96 SRB_STATUS_SELECTION_TIMEOUT = 0x0A,
97 SRB_SEE_SENSE = 0x80,
98
99 /* task attribute */
100 TASK_ATTRIBUTE_SIMPLE = 0x0,
101 TASK_ATTRIBUTE_HEADOFQUEUE = 0x1,
102 TASK_ATTRIBUTE_ORDERED = 0x2,
103 TASK_ATTRIBUTE_ACA = 0x4,
104
105 SS_STS_NORMAL = 0x80000000,
106 SS_STS_DONE = 0x40000000,
107 SS_STS_HANDSHAKE = 0x20000000,
108
109 SS_HEAD_HANDSHAKE = 0x80,
110
111 STEX_CDB_LENGTH = 16,
112 STATUS_VAR_LEN = 128,
113
114 /* sg flags */
115 SG_CF_EOT = 0x80, /* end of table */
116 SG_CF_64B = 0x40, /* 64 bit item */
117 SG_CF_HOST = 0x20, /* sg in host memory */
118 MSG_DATA_DIR_ND = 0,
119 MSG_DATA_DIR_IN = 1,
120 MSG_DATA_DIR_OUT = 2,
121
122 st_shasta = 0,
123 st_vsc = 1,
124 st_yosemite = 2,
125 st_seq = 3,
126 st_yel = 4,
127
128 PASSTHRU_REQ_TYPE = 0x00000001,
129 PASSTHRU_REQ_NO_WAKEUP = 0x00000100,
130 ST_INTERNAL_TIMEOUT = 180,
131
132 ST_TO_CMD = 0,
133 ST_FROM_CMD = 1,
134
135 /* vendor specific commands of Promise */
136 MGT_CMD = 0xd8,
137 SINBAND_MGT_CMD = 0xd9,
138 ARRAY_CMD = 0xe0,
139 CONTROLLER_CMD = 0xe1,
140 DEBUGGING_CMD = 0xe2,
141 PASSTHRU_CMD = 0xe3,
142
143 PASSTHRU_GET_ADAPTER = 0x05,
144 PASSTHRU_GET_DRVVER = 0x10,
145
146 CTLR_CONFIG_CMD = 0x03,
147 CTLR_SHUTDOWN = 0x0d,
148
149 CTLR_POWER_STATE_CHANGE = 0x0e,
150 CTLR_POWER_SAVING = 0x01,
151
152 PASSTHRU_SIGNATURE = 0x4e415041,
153 MGT_CMD_SIGNATURE = 0xba,
154
155 INQUIRY_EVPD = 0x01,
156
157 ST_ADDITIONAL_MEM = 0x200000,
158 };
159
160 struct st_sgitem {
161 u8 ctrl; /* SG_CF_xxx */
162 u8 reserved[3];
163 __le32 count;
164 __le64 addr;
165 };
166
167 struct st_ss_sgitem {
168 __le32 addr;
169 __le32 addr_hi;
170 __le32 count;
171 };
172
173 struct st_sgtable {
174 __le16 sg_count;
175 __le16 max_sg_count;
176 __le32 sz_in_byte;
177 };
178
179 struct st_msg_header {
180 __le64 handle;
181 u8 flag;
182 u8 channel;
183 __le16 timeout;
184 u32 reserved;
185 };
186
187 struct handshake_frame {
188 __le64 rb_phy; /* request payload queue physical address */
189 __le16 req_sz; /* size of each request payload */
190 __le16 req_cnt; /* count of reqs the buffer can hold */
191 __le16 status_sz; /* size of each status payload */
192 __le16 status_cnt; /* count of status the buffer can hold */
193 __le64 hosttime; /* seconds from Jan 1, 1970 (GMT) */
194 u8 partner_type; /* who sends this frame */
195 u8 reserved0[7];
196 __le32 partner_ver_major;
197 __le32 partner_ver_minor;
198 __le32 partner_ver_oem;
199 __le32 partner_ver_build;
200 __le32 extra_offset; /* NEW */
201 __le32 extra_size; /* NEW */
202 __le32 scratch_size;
203 u32 reserved1;
204 };
205
206 struct req_msg {
207 __le16 tag;
208 u8 lun;
209 u8 target;
210 u8 task_attr;
211 u8 task_manage;
212 u8 data_dir;
213 u8 payload_sz; /* payload size in 4-byte, not used */
214 u8 cdb[STEX_CDB_LENGTH];
215 u32 variable[0];
216 };
217
218 struct status_msg {
219 __le16 tag;
220 u8 lun;
221 u8 target;
222 u8 srb_status;
223 u8 scsi_status;
224 u8 reserved;
225 u8 payload_sz; /* payload size in 4-byte */
226 u8 variable[STATUS_VAR_LEN];
227 };
228
229 struct ver_info {
230 u32 major;
231 u32 minor;
232 u32 oem;
233 u32 build;
234 u32 reserved[2];
235 };
236
237 struct st_frame {
238 u32 base[6];
239 u32 rom_addr;
240
241 struct ver_info drv_ver;
242 struct ver_info bios_ver;
243
244 u32 bus;
245 u32 slot;
246 u32 irq_level;
247 u32 irq_vec;
248 u32 id;
249 u32 subid;
250
251 u32 dimm_size;
252 u8 dimm_type;
253 u8 reserved[3];
254
255 u32 channel;
256 u32 reserved1;
257 };
258
259 struct st_drvver {
260 u32 major;
261 u32 minor;
262 u32 oem;
263 u32 build;
264 u32 signature[2];
265 u8 console_id;
266 u8 host_no;
267 u8 reserved0[2];
268 u32 reserved[3];
269 };
270
271 struct st_ccb {
272 struct req_msg *req;
273 struct scsi_cmnd *cmd;
274
275 void *sense_buffer;
276 unsigned int sense_bufflen;
277 int sg_count;
278
279 u32 req_type;
280 u8 srb_status;
281 u8 scsi_status;
282 u8 reserved[2];
283 };
284
285 struct st_hba {
286 void __iomem *mmio_base; /* iomapped PCI memory space */
287 void *dma_mem;
288 dma_addr_t dma_handle;
289 size_t dma_size;
290
291 struct Scsi_Host *host;
292 struct pci_dev *pdev;
293
294 struct req_msg * (*alloc_rq) (struct st_hba *);
295 int (*map_sg)(struct st_hba *, struct req_msg *, struct st_ccb *);
296 void (*send) (struct st_hba *, struct req_msg *, u16);
297
298 u32 req_head;
299 u32 req_tail;
300 u32 status_head;
301 u32 status_tail;
302
303 struct status_msg *status_buffer;
304 void *copy_buffer; /* temp buffer for driver-handled commands */
305 struct st_ccb *ccb;
306 struct st_ccb *wait_ccb;
307 __le32 *scratch;
308
309 unsigned int mu_status;
310 unsigned int cardtype;
311 int msi_enabled;
312 int out_req_cnt;
313 u32 extra_offset;
314 u16 rq_count;
315 u16 rq_size;
316 u16 sts_count;
317 };
318
319 struct st_card_info {
320 struct req_msg * (*alloc_rq) (struct st_hba *);
321 int (*map_sg)(struct st_hba *, struct req_msg *, struct st_ccb *);
322 void (*send) (struct st_hba *, struct req_msg *, u16);
323 unsigned int max_id;
324 unsigned int max_lun;
325 unsigned int max_channel;
326 u16 rq_count;
327 u16 rq_size;
328 u16 sts_count;
329 };
330
331 static int msi;
332 module_param(msi, int, 0);
333 MODULE_PARM_DESC(msi, "Enable Message Signaled Interrupts(0=off, 1=on)");
334
335 static const char console_inq_page[] =
336 {
337 0x03,0x00,0x03,0x03,0xFA,0x00,0x00,0x30,
338 0x50,0x72,0x6F,0x6D,0x69,0x73,0x65,0x20, /* "Promise " */
339 0x52,0x41,0x49,0x44,0x20,0x43,0x6F,0x6E, /* "RAID Con" */
340 0x73,0x6F,0x6C,0x65,0x20,0x20,0x20,0x20, /* "sole " */
341 0x31,0x2E,0x30,0x30,0x20,0x20,0x20,0x20, /* "1.00 " */
342 0x53,0x58,0x2F,0x52,0x53,0x41,0x46,0x2D, /* "SX/RSAF-" */
343 0x54,0x45,0x31,0x2E,0x30,0x30,0x20,0x20, /* "TE1.00 " */
344 0x0C,0x20,0x20,0x20,0x20,0x20,0x20,0x20
345 };
346
347 MODULE_AUTHOR("Ed Lin");
348 MODULE_DESCRIPTION("Promise Technology SuperTrak EX Controllers");
349 MODULE_LICENSE("GPL");
350 MODULE_VERSION(ST_DRIVER_VERSION);
351
352 static void stex_gettime(__le64 *time)
353 {
354 struct timeval tv;
355
356 do_gettimeofday(&tv);
357 *time = cpu_to_le64(tv.tv_sec);
358 }
359
360 static struct status_msg *stex_get_status(struct st_hba *hba)
361 {
362 struct status_msg *status = hba->status_buffer + hba->status_tail;
363
364 ++hba->status_tail;
365 hba->status_tail %= hba->sts_count+1;
366
367 return status;
368 }
369
370 static void stex_invalid_field(struct scsi_cmnd *cmd,
371 void (*done)(struct scsi_cmnd *))
372 {
373 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
374
375 /* "Invalid field in cdb" */
376 scsi_build_sense_buffer(0, cmd->sense_buffer, ILLEGAL_REQUEST, 0x24,
377 0x0);
378 done(cmd);
379 }
380
381 static struct req_msg *stex_alloc_req(struct st_hba *hba)
382 {
383 struct req_msg *req = hba->dma_mem + hba->req_head * hba->rq_size;
384
385 ++hba->req_head;
386 hba->req_head %= hba->rq_count+1;
387
388 return req;
389 }
390
391 static struct req_msg *stex_ss_alloc_req(struct st_hba *hba)
392 {
393 return (struct req_msg *)(hba->dma_mem +
394 hba->req_head * hba->rq_size + sizeof(struct st_msg_header));
395 }
396
397 static int stex_map_sg(struct st_hba *hba,
398 struct req_msg *req, struct st_ccb *ccb)
399 {
400 struct scsi_cmnd *cmd;
401 struct scatterlist *sg;
402 struct st_sgtable *dst;
403 struct st_sgitem *table;
404 int i, nseg;
405
406 cmd = ccb->cmd;
407 nseg = scsi_dma_map(cmd);
408 BUG_ON(nseg < 0);
409 if (nseg) {
410 dst = (struct st_sgtable *)req->variable;
411
412 ccb->sg_count = nseg;
413 dst->sg_count = cpu_to_le16((u16)nseg);
414 dst->max_sg_count = cpu_to_le16(hba->host->sg_tablesize);
415 dst->sz_in_byte = cpu_to_le32(scsi_bufflen(cmd));
416
417 table = (struct st_sgitem *)(dst + 1);
418 scsi_for_each_sg(cmd, sg, nseg, i) {
419 table[i].count = cpu_to_le32((u32)sg_dma_len(sg));
420 table[i].addr = cpu_to_le64(sg_dma_address(sg));
421 table[i].ctrl = SG_CF_64B | SG_CF_HOST;
422 }
423 table[--i].ctrl |= SG_CF_EOT;
424 }
425
426 return nseg;
427 }
428
429 static int stex_ss_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_ss_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_ss_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 =
453 cpu_to_le32(sg_dma_address(sg) & 0xffffffff);
454 table[i].addr_hi =
455 cpu_to_le32((sg_dma_address(sg) >> 16) >> 16);
456 }
457 }
458
459 return nseg;
460 }
461
462 static void stex_controller_info(struct st_hba *hba, struct st_ccb *ccb)
463 {
464 struct st_frame *p;
465 size_t count = sizeof(struct st_frame);
466
467 p = hba->copy_buffer;
468 scsi_sg_copy_to_buffer(ccb->cmd, p, count);
469 memset(p->base, 0, sizeof(u32)*6);
470 *(unsigned long *)(p->base) = pci_resource_start(hba->pdev, 0);
471 p->rom_addr = 0;
472
473 p->drv_ver.major = ST_VER_MAJOR;
474 p->drv_ver.minor = ST_VER_MINOR;
475 p->drv_ver.oem = ST_OEM;
476 p->drv_ver.build = ST_BUILD_VER;
477
478 p->bus = hba->pdev->bus->number;
479 p->slot = hba->pdev->devfn;
480 p->irq_level = 0;
481 p->irq_vec = hba->pdev->irq;
482 p->id = hba->pdev->vendor << 16 | hba->pdev->device;
483 p->subid =
484 hba->pdev->subsystem_vendor << 16 | hba->pdev->subsystem_device;
485
486 scsi_sg_copy_from_buffer(ccb->cmd, p, count);
487 }
488
489 static void
490 stex_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag)
491 {
492 req->tag = cpu_to_le16(tag);
493
494 hba->ccb[tag].req = req;
495 hba->out_req_cnt++;
496
497 writel(hba->req_head, hba->mmio_base + IMR0);
498 writel(MU_INBOUND_DOORBELL_REQHEADCHANGED, hba->mmio_base + IDBL);
499 readl(hba->mmio_base + IDBL); /* flush */
500 }
501
502 static void
503 stex_ss_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag)
504 {
505 struct scsi_cmnd *cmd;
506 struct st_msg_header *msg_h;
507 dma_addr_t addr;
508
509 req->tag = cpu_to_le16(tag);
510
511 hba->ccb[tag].req = req;
512 hba->out_req_cnt++;
513
514 cmd = hba->ccb[tag].cmd;
515 msg_h = (struct st_msg_header *)req - 1;
516 if (likely(cmd)) {
517 msg_h->channel = (u8)cmd->device->channel;
518 msg_h->timeout = cpu_to_le16(cmd->request->timeout/HZ);
519 }
520 addr = hba->dma_handle + hba->req_head * hba->rq_size;
521 addr += (hba->ccb[tag].sg_count+4)/11;
522 msg_h->handle = cpu_to_le64(addr);
523
524 ++hba->req_head;
525 hba->req_head %= hba->rq_count+1;
526
527 writel((addr >> 16) >> 16, hba->mmio_base + YH2I_REQ_HI);
528 readl(hba->mmio_base + YH2I_REQ_HI); /* flush */
529 writel(addr, hba->mmio_base + YH2I_REQ);
530 readl(hba->mmio_base + YH2I_REQ); /* flush */
531 }
532
533 static int
534 stex_slave_alloc(struct scsi_device *sdev)
535 {
536 /* Cheat: usually extracted from Inquiry data */
537 sdev->tagged_supported = 1;
538
539 scsi_activate_tcq(sdev, sdev->host->can_queue);
540
541 return 0;
542 }
543
544 static int
545 stex_slave_config(struct scsi_device *sdev)
546 {
547 sdev->use_10_for_rw = 1;
548 sdev->use_10_for_ms = 1;
549 blk_queue_rq_timeout(sdev->request_queue, 60 * HZ);
550 sdev->tagged_supported = 1;
551
552 return 0;
553 }
554
555 static void
556 stex_slave_destroy(struct scsi_device *sdev)
557 {
558 scsi_deactivate_tcq(sdev, 1);
559 }
560
561 static int
562 stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
563 {
564 struct st_hba *hba;
565 struct Scsi_Host *host;
566 unsigned int id, lun;
567 struct req_msg *req;
568 u16 tag;
569
570 host = cmd->device->host;
571 id = cmd->device->id;
572 lun = cmd->device->lun;
573 hba = (struct st_hba *) &host->hostdata[0];
574
575 switch (cmd->cmnd[0]) {
576 case MODE_SENSE_10:
577 {
578 static char ms10_caching_page[12] =
579 { 0, 0x12, 0, 0, 0, 0, 0, 0, 0x8, 0xa, 0x4, 0 };
580 unsigned char page;
581
582 page = cmd->cmnd[2] & 0x3f;
583 if (page == 0x8 || page == 0x3f) {
584 scsi_sg_copy_from_buffer(cmd, ms10_caching_page,
585 sizeof(ms10_caching_page));
586 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
587 done(cmd);
588 } else
589 stex_invalid_field(cmd, done);
590 return 0;
591 }
592 case REPORT_LUNS:
593 /*
594 * The shasta firmware does not report actual luns in the
595 * target, so fail the command to force sequential lun scan.
596 * Also, the console device does not support this command.
597 */
598 if (hba->cardtype == st_shasta || id == host->max_id - 1) {
599 stex_invalid_field(cmd, done);
600 return 0;
601 }
602 break;
603 case TEST_UNIT_READY:
604 if (id == host->max_id - 1) {
605 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
606 done(cmd);
607 return 0;
608 }
609 break;
610 case INQUIRY:
611 if (id != host->max_id - 1)
612 break;
613 if (!lun && !cmd->device->channel &&
614 (cmd->cmnd[1] & INQUIRY_EVPD) == 0) {
615 scsi_sg_copy_from_buffer(cmd, (void *)console_inq_page,
616 sizeof(console_inq_page));
617 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
618 done(cmd);
619 } else
620 stex_invalid_field(cmd, done);
621 return 0;
622 case PASSTHRU_CMD:
623 if (cmd->cmnd[1] == PASSTHRU_GET_DRVVER) {
624 struct st_drvver ver;
625 size_t cp_len = sizeof(ver);
626
627 ver.major = ST_VER_MAJOR;
628 ver.minor = ST_VER_MINOR;
629 ver.oem = ST_OEM;
630 ver.build = ST_BUILD_VER;
631 ver.signature[0] = PASSTHRU_SIGNATURE;
632 ver.console_id = host->max_id - 1;
633 ver.host_no = hba->host->host_no;
634 cp_len = scsi_sg_copy_from_buffer(cmd, &ver, cp_len);
635 cmd->result = sizeof(ver) == cp_len ?
636 DID_OK << 16 | COMMAND_COMPLETE << 8 :
637 DID_ERROR << 16 | COMMAND_COMPLETE << 8;
638 done(cmd);
639 return 0;
640 }
641 default:
642 break;
643 }
644
645 cmd->scsi_done = done;
646
647 tag = cmd->request->tag;
648
649 if (unlikely(tag >= host->can_queue))
650 return SCSI_MLQUEUE_HOST_BUSY;
651
652 req = hba->alloc_rq(hba);
653
654 req->lun = lun;
655 req->target = id;
656
657 /* cdb */
658 memcpy(req->cdb, cmd->cmnd, STEX_CDB_LENGTH);
659
660 if (cmd->sc_data_direction == DMA_FROM_DEVICE)
661 req->data_dir = MSG_DATA_DIR_IN;
662 else if (cmd->sc_data_direction == DMA_TO_DEVICE)
663 req->data_dir = MSG_DATA_DIR_OUT;
664 else
665 req->data_dir = MSG_DATA_DIR_ND;
666
667 hba->ccb[tag].cmd = cmd;
668 hba->ccb[tag].sense_bufflen = SCSI_SENSE_BUFFERSIZE;
669 hba->ccb[tag].sense_buffer = cmd->sense_buffer;
670
671 if (!hba->map_sg(hba, req, &hba->ccb[tag])) {
672 hba->ccb[tag].sg_count = 0;
673 memset(&req->variable[0], 0, 8);
674 }
675
676 hba->send(hba, req, tag);
677 return 0;
678 }
679
680 static void stex_scsi_done(struct st_ccb *ccb)
681 {
682 struct scsi_cmnd *cmd = ccb->cmd;
683 int result;
684
685 if (ccb->srb_status == SRB_STATUS_SUCCESS || ccb->srb_status == 0) {
686 result = ccb->scsi_status;
687 switch (ccb->scsi_status) {
688 case SAM_STAT_GOOD:
689 result |= DID_OK << 16 | COMMAND_COMPLETE << 8;
690 break;
691 case SAM_STAT_CHECK_CONDITION:
692 result |= DRIVER_SENSE << 24;
693 break;
694 case SAM_STAT_BUSY:
695 result |= DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
696 break;
697 default:
698 result |= DID_ERROR << 16 | COMMAND_COMPLETE << 8;
699 break;
700 }
701 }
702 else if (ccb->srb_status & SRB_SEE_SENSE)
703 result = DRIVER_SENSE << 24 | SAM_STAT_CHECK_CONDITION;
704 else switch (ccb->srb_status) {
705 case SRB_STATUS_SELECTION_TIMEOUT:
706 result = DID_NO_CONNECT << 16 | COMMAND_COMPLETE << 8;
707 break;
708 case SRB_STATUS_BUSY:
709 result = DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
710 break;
711 case SRB_STATUS_INVALID_REQUEST:
712 case SRB_STATUS_ERROR:
713 default:
714 result = DID_ERROR << 16 | COMMAND_COMPLETE << 8;
715 break;
716 }
717
718 cmd->result = result;
719 cmd->scsi_done(cmd);
720 }
721
722 static void stex_copy_data(struct st_ccb *ccb,
723 struct status_msg *resp, unsigned int variable)
724 {
725 if (resp->scsi_status != SAM_STAT_GOOD) {
726 if (ccb->sense_buffer != NULL)
727 memcpy(ccb->sense_buffer, resp->variable,
728 min(variable, ccb->sense_bufflen));
729 return;
730 }
731
732 if (ccb->cmd == NULL)
733 return;
734 scsi_sg_copy_from_buffer(ccb->cmd, resp->variable, variable);
735 }
736
737 static void stex_check_cmd(struct st_hba *hba,
738 struct st_ccb *ccb, struct status_msg *resp)
739 {
740 if (ccb->cmd->cmnd[0] == MGT_CMD &&
741 resp->scsi_status != SAM_STAT_CHECK_CONDITION)
742 scsi_set_resid(ccb->cmd, scsi_bufflen(ccb->cmd) -
743 le32_to_cpu(*(__le32 *)&resp->variable[0]));
744 }
745
746 static void stex_mu_intr(struct st_hba *hba, u32 doorbell)
747 {
748 void __iomem *base = hba->mmio_base;
749 struct status_msg *resp;
750 struct st_ccb *ccb;
751 unsigned int size;
752 u16 tag;
753
754 if (unlikely(!(doorbell & MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED)))
755 return;
756
757 /* status payloads */
758 hba->status_head = readl(base + OMR1);
759 if (unlikely(hba->status_head > hba->sts_count)) {
760 printk(KERN_WARNING DRV_NAME "(%s): invalid status head\n",
761 pci_name(hba->pdev));
762 return;
763 }
764
765 /*
766 * it's not a valid status payload if:
767 * 1. there are no pending requests(e.g. during init stage)
768 * 2. there are some pending requests, but the controller is in
769 * reset status, and its type is not st_yosemite
770 * firmware of st_yosemite in reset status will return pending requests
771 * to driver, so we allow it to pass
772 */
773 if (unlikely(hba->out_req_cnt <= 0 ||
774 (hba->mu_status == MU_STATE_RESETTING &&
775 hba->cardtype != st_yosemite))) {
776 hba->status_tail = hba->status_head;
777 goto update_status;
778 }
779
780 while (hba->status_tail != hba->status_head) {
781 resp = stex_get_status(hba);
782 tag = le16_to_cpu(resp->tag);
783 if (unlikely(tag >= hba->host->can_queue)) {
784 printk(KERN_WARNING DRV_NAME
785 "(%s): invalid tag\n", pci_name(hba->pdev));
786 continue;
787 }
788
789 hba->out_req_cnt--;
790 ccb = &hba->ccb[tag];
791 if (unlikely(hba->wait_ccb == ccb))
792 hba->wait_ccb = NULL;
793 if (unlikely(ccb->req == NULL)) {
794 printk(KERN_WARNING DRV_NAME
795 "(%s): lagging req\n", pci_name(hba->pdev));
796 continue;
797 }
798
799 size = resp->payload_sz * sizeof(u32); /* payload size */
800 if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN ||
801 size > sizeof(*resp))) {
802 printk(KERN_WARNING DRV_NAME "(%s): bad status size\n",
803 pci_name(hba->pdev));
804 } else {
805 size -= sizeof(*resp) - STATUS_VAR_LEN; /* copy size */
806 if (size)
807 stex_copy_data(ccb, resp, size);
808 }
809
810 ccb->req = NULL;
811 ccb->srb_status = resp->srb_status;
812 ccb->scsi_status = resp->scsi_status;
813
814 if (likely(ccb->cmd != NULL)) {
815 if (hba->cardtype == st_yosemite)
816 stex_check_cmd(hba, ccb, resp);
817
818 if (unlikely(ccb->cmd->cmnd[0] == PASSTHRU_CMD &&
819 ccb->cmd->cmnd[1] == PASSTHRU_GET_ADAPTER))
820 stex_controller_info(hba, ccb);
821
822 scsi_dma_unmap(ccb->cmd);
823 stex_scsi_done(ccb);
824 } else
825 ccb->req_type = 0;
826 }
827
828 update_status:
829 writel(hba->status_head, base + IMR1);
830 readl(base + IMR1); /* flush */
831 }
832
833 static irqreturn_t stex_intr(int irq, void *__hba)
834 {
835 struct st_hba *hba = __hba;
836 void __iomem *base = hba->mmio_base;
837 u32 data;
838 unsigned long flags;
839 int handled = 0;
840
841 spin_lock_irqsave(hba->host->host_lock, flags);
842
843 data = readl(base + ODBL);
844
845 if (data && data != 0xffffffff) {
846 /* clear the interrupt */
847 writel(data, base + ODBL);
848 readl(base + ODBL); /* flush */
849 stex_mu_intr(hba, data);
850 handled = 1;
851 }
852
853 spin_unlock_irqrestore(hba->host->host_lock, flags);
854
855 return IRQ_RETVAL(handled);
856 }
857
858 static void stex_ss_mu_intr(struct st_hba *hba)
859 {
860 struct status_msg *resp;
861 struct st_ccb *ccb;
862 __le32 *scratch;
863 unsigned int size;
864 int count = 0;
865 u32 value;
866 u16 tag;
867
868 if (unlikely(hba->out_req_cnt <= 0 ||
869 hba->mu_status == MU_STATE_RESETTING))
870 return;
871
872 while (count < hba->sts_count) {
873 scratch = hba->scratch + hba->status_tail;
874 value = le32_to_cpu(*scratch);
875 if (unlikely(!(value & SS_STS_NORMAL)))
876 return;
877
878 resp = hba->status_buffer + hba->status_tail;
879 *scratch = 0;
880 ++count;
881 ++hba->status_tail;
882 hba->status_tail %= hba->sts_count+1;
883
884 tag = (u16)value;
885 if (unlikely(tag >= hba->host->can_queue)) {
886 printk(KERN_WARNING DRV_NAME
887 "(%s): invalid tag\n", pci_name(hba->pdev));
888 continue;
889 }
890
891 hba->out_req_cnt--;
892 ccb = &hba->ccb[tag];
893 if (unlikely(hba->wait_ccb == ccb))
894 hba->wait_ccb = NULL;
895 if (unlikely(ccb->req == NULL)) {
896 printk(KERN_WARNING DRV_NAME
897 "(%s): lagging req\n", pci_name(hba->pdev));
898 continue;
899 }
900
901 ccb->req = NULL;
902 if (likely(value & SS_STS_DONE)) { /* normal case */
903 ccb->srb_status = SRB_STATUS_SUCCESS;
904 ccb->scsi_status = SAM_STAT_GOOD;
905 } else {
906 ccb->srb_status = resp->srb_status;
907 ccb->scsi_status = resp->scsi_status;
908 size = resp->payload_sz * sizeof(u32);
909 if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN ||
910 size > sizeof(*resp))) {
911 printk(KERN_WARNING DRV_NAME
912 "(%s): bad status size\n",
913 pci_name(hba->pdev));
914 } else {
915 size -= sizeof(*resp) - STATUS_VAR_LEN;
916 if (size)
917 stex_copy_data(ccb, resp, size);
918 }
919 if (likely(ccb->cmd != NULL))
920 stex_check_cmd(hba, ccb, resp);
921 }
922
923 if (likely(ccb->cmd != NULL)) {
924 scsi_dma_unmap(ccb->cmd);
925 stex_scsi_done(ccb);
926 } else
927 ccb->req_type = 0;
928 }
929 }
930
931 static irqreturn_t stex_ss_intr(int irq, void *__hba)
932 {
933 struct st_hba *hba = __hba;
934 void __iomem *base = hba->mmio_base;
935 u32 data;
936 unsigned long flags;
937 int handled = 0;
938
939 spin_lock_irqsave(hba->host->host_lock, flags);
940
941 data = readl(base + YI2H_INT);
942 if (data && data != 0xffffffff) {
943 /* clear the interrupt */
944 writel(data, base + YI2H_INT_C);
945 stex_ss_mu_intr(hba);
946 handled = 1;
947 }
948
949 spin_unlock_irqrestore(hba->host->host_lock, flags);
950
951 return IRQ_RETVAL(handled);
952 }
953
954 static int stex_common_handshake(struct st_hba *hba)
955 {
956 void __iomem *base = hba->mmio_base;
957 struct handshake_frame *h;
958 dma_addr_t status_phys;
959 u32 data;
960 unsigned long before;
961
962 if (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
963 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
964 readl(base + IDBL);
965 before = jiffies;
966 while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
967 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
968 printk(KERN_ERR DRV_NAME
969 "(%s): no handshake signature\n",
970 pci_name(hba->pdev));
971 return -1;
972 }
973 rmb();
974 msleep(1);
975 }
976 }
977
978 udelay(10);
979
980 data = readl(base + OMR1);
981 if ((data & 0xffff0000) == MU_HANDSHAKE_SIGNATURE_HALF) {
982 data &= 0x0000ffff;
983 if (hba->host->can_queue > data) {
984 hba->host->can_queue = data;
985 hba->host->cmd_per_lun = data;
986 }
987 }
988
989 h = (struct handshake_frame *)hba->status_buffer;
990 h->rb_phy = cpu_to_le64(hba->dma_handle);
991 h->req_sz = cpu_to_le16(hba->rq_size);
992 h->req_cnt = cpu_to_le16(hba->rq_count+1);
993 h->status_sz = cpu_to_le16(sizeof(struct status_msg));
994 h->status_cnt = cpu_to_le16(hba->sts_count+1);
995 stex_gettime(&h->hosttime);
996 h->partner_type = HMU_PARTNER_TYPE;
997 if (hba->extra_offset) {
998 h->extra_offset = cpu_to_le32(hba->extra_offset);
999 h->extra_size = cpu_to_le32(ST_ADDITIONAL_MEM);
1000 } else
1001 h->extra_offset = h->extra_size = 0;
1002
1003 status_phys = hba->dma_handle + (hba->rq_count+1) * hba->rq_size;
1004 writel(status_phys, base + IMR0);
1005 readl(base + IMR0);
1006 writel((status_phys >> 16) >> 16, base + IMR1);
1007 readl(base + IMR1);
1008
1009 writel((status_phys >> 16) >> 16, base + OMR0); /* old fw compatible */
1010 readl(base + OMR0);
1011 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
1012 readl(base + IDBL); /* flush */
1013
1014 udelay(10);
1015 before = jiffies;
1016 while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
1017 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
1018 printk(KERN_ERR DRV_NAME
1019 "(%s): no signature after handshake frame\n",
1020 pci_name(hba->pdev));
1021 return -1;
1022 }
1023 rmb();
1024 msleep(1);
1025 }
1026
1027 writel(0, base + IMR0);
1028 readl(base + IMR0);
1029 writel(0, base + OMR0);
1030 readl(base + OMR0);
1031 writel(0, base + IMR1);
1032 readl(base + IMR1);
1033 writel(0, base + OMR1);
1034 readl(base + OMR1); /* flush */
1035 return 0;
1036 }
1037
1038 static int stex_ss_handshake(struct st_hba *hba)
1039 {
1040 void __iomem *base = hba->mmio_base;
1041 struct st_msg_header *msg_h;
1042 struct handshake_frame *h;
1043 __le32 *scratch = hba->scratch;
1044 u32 data;
1045 unsigned long before;
1046 int ret = 0;
1047
1048 h = (struct handshake_frame *)(hba->alloc_rq(hba));
1049 msg_h = (struct st_msg_header *)h - 1;
1050 msg_h->handle = cpu_to_le64(hba->dma_handle);
1051 msg_h->flag = SS_HEAD_HANDSHAKE;
1052
1053 h->rb_phy = cpu_to_le64(hba->dma_handle);
1054 h->req_sz = cpu_to_le16(hba->rq_size);
1055 h->req_cnt = cpu_to_le16(hba->rq_count+1);
1056 h->status_sz = cpu_to_le16(sizeof(struct status_msg));
1057 h->status_cnt = cpu_to_le16(hba->sts_count+1);
1058 stex_gettime(&h->hosttime);
1059 h->partner_type = HMU_PARTNER_TYPE;
1060 h->extra_offset = h->extra_size = 0;
1061 h->scratch_size = cpu_to_le32((hba->sts_count+1)*sizeof(u32));
1062
1063 data = readl(base + YINT_EN);
1064 data &= ~4;
1065 writel(data, base + YINT_EN);
1066 writel((hba->dma_handle >> 16) >> 16, base + YH2I_REQ_HI);
1067 writel(hba->dma_handle, base + YH2I_REQ);
1068
1069 scratch = hba->scratch;
1070 before = jiffies;
1071 while (!(le32_to_cpu(*scratch) & SS_STS_HANDSHAKE)) {
1072 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
1073 printk(KERN_ERR DRV_NAME
1074 "(%s): no signature after handshake frame\n",
1075 pci_name(hba->pdev));
1076 ret = -1;
1077 break;
1078 }
1079 rmb();
1080 msleep(1);
1081 }
1082
1083 *scratch = 0;
1084 msg_h->flag = 0;
1085 return ret;
1086 }
1087
1088 static int stex_handshake(struct st_hba *hba)
1089 {
1090 int err;
1091 unsigned long flags;
1092
1093 err = (hba->cardtype == st_yel) ?
1094 stex_ss_handshake(hba) : stex_common_handshake(hba);
1095 if (err == 0) {
1096 spin_lock_irqsave(hba->host->host_lock, flags);
1097 hba->req_head = 0;
1098 hba->req_tail = 0;
1099 hba->status_head = 0;
1100 hba->status_tail = 0;
1101 hba->out_req_cnt = 0;
1102 hba->mu_status = MU_STATE_STARTED;
1103 spin_unlock_irqrestore(hba->host->host_lock, flags);
1104 }
1105 return err;
1106 }
1107
1108 static int stex_abort(struct scsi_cmnd *cmd)
1109 {
1110 struct Scsi_Host *host = cmd->device->host;
1111 struct st_hba *hba = (struct st_hba *)host->hostdata;
1112 u16 tag = cmd->request->tag;
1113 void __iomem *base;
1114 u32 data;
1115 int result = SUCCESS;
1116 unsigned long flags;
1117
1118 printk(KERN_INFO DRV_NAME
1119 "(%s): aborting command\n", pci_name(hba->pdev));
1120 scsi_print_command(cmd);
1121
1122 base = hba->mmio_base;
1123 spin_lock_irqsave(host->host_lock, flags);
1124 if (tag < host->can_queue && hba->ccb[tag].cmd == cmd)
1125 hba->wait_ccb = &hba->ccb[tag];
1126 else {
1127 for (tag = 0; tag < host->can_queue; tag++)
1128 if (hba->ccb[tag].cmd == cmd) {
1129 hba->wait_ccb = &hba->ccb[tag];
1130 break;
1131 }
1132 if (tag >= host->can_queue)
1133 goto out;
1134 }
1135
1136 if (hba->cardtype == st_yel) {
1137 data = readl(base + YI2H_INT);
1138 if (data == 0 || data == 0xffffffff)
1139 goto fail_out;
1140
1141 writel(data, base + YI2H_INT_C);
1142 stex_ss_mu_intr(hba);
1143 } else {
1144 data = readl(base + ODBL);
1145 if (data == 0 || data == 0xffffffff)
1146 goto fail_out;
1147
1148 writel(data, base + ODBL);
1149 readl(base + ODBL); /* flush */
1150
1151 stex_mu_intr(hba, data);
1152 }
1153 if (hba->wait_ccb == NULL) {
1154 printk(KERN_WARNING DRV_NAME
1155 "(%s): lost interrupt\n", pci_name(hba->pdev));
1156 goto out;
1157 }
1158
1159 fail_out:
1160 scsi_dma_unmap(cmd);
1161 hba->wait_ccb->req = NULL; /* nullify the req's future return */
1162 hba->wait_ccb = NULL;
1163 result = FAILED;
1164 out:
1165 spin_unlock_irqrestore(host->host_lock, flags);
1166 return result;
1167 }
1168
1169 static void stex_hard_reset(struct st_hba *hba)
1170 {
1171 struct pci_bus *bus;
1172 int i;
1173 u16 pci_cmd;
1174 u8 pci_bctl;
1175
1176 for (i = 0; i < 16; i++)
1177 pci_read_config_dword(hba->pdev, i * 4,
1178 &hba->pdev->saved_config_space[i]);
1179
1180 /* Reset secondary bus. Our controller(MU/ATU) is the only device on
1181 secondary bus. Consult Intel 80331/3 developer's manual for detail */
1182 bus = hba->pdev->bus;
1183 pci_read_config_byte(bus->self, PCI_BRIDGE_CONTROL, &pci_bctl);
1184 pci_bctl |= PCI_BRIDGE_CTL_BUS_RESET;
1185 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
1186
1187 /*
1188 * 1 ms may be enough for 8-port controllers. But 16-port controllers
1189 * require more time to finish bus reset. Use 100 ms here for safety
1190 */
1191 msleep(100);
1192 pci_bctl &= ~PCI_BRIDGE_CTL_BUS_RESET;
1193 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
1194
1195 for (i = 0; i < MU_HARD_RESET_WAIT; i++) {
1196 pci_read_config_word(hba->pdev, PCI_COMMAND, &pci_cmd);
1197 if (pci_cmd != 0xffff && (pci_cmd & PCI_COMMAND_MASTER))
1198 break;
1199 msleep(1);
1200 }
1201
1202 ssleep(5);
1203 for (i = 0; i < 16; i++)
1204 pci_write_config_dword(hba->pdev, i * 4,
1205 hba->pdev->saved_config_space[i]);
1206 }
1207
1208 static int stex_reset(struct scsi_cmnd *cmd)
1209 {
1210 struct st_hba *hba;
1211 void __iomem *base;
1212 unsigned long flags, before;
1213
1214 hba = (struct st_hba *) &cmd->device->host->hostdata[0];
1215
1216 printk(KERN_INFO DRV_NAME
1217 "(%s): resetting host\n", pci_name(hba->pdev));
1218 scsi_print_command(cmd);
1219
1220 hba->mu_status = MU_STATE_RESETTING;
1221
1222 if (hba->cardtype == st_shasta)
1223 stex_hard_reset(hba);
1224
1225 if (hba->cardtype != st_yosemite) {
1226 if (stex_handshake(hba)) {
1227 printk(KERN_WARNING DRV_NAME
1228 "(%s): resetting: handshake failed\n",
1229 pci_name(hba->pdev));
1230 return FAILED;
1231 }
1232 return SUCCESS;
1233 }
1234
1235 /* st_yosemite */
1236 writel(MU_INBOUND_DOORBELL_RESET, hba->mmio_base + IDBL);
1237 readl(hba->mmio_base + IDBL); /* flush */
1238 before = jiffies;
1239 while (hba->out_req_cnt > 0) {
1240 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) {
1241 printk(KERN_WARNING DRV_NAME
1242 "(%s): reset timeout\n", pci_name(hba->pdev));
1243 return FAILED;
1244 }
1245 msleep(1);
1246 }
1247
1248 base = hba->mmio_base;
1249 writel(0, base + IMR0);
1250 readl(base + IMR0);
1251 writel(0, base + OMR0);
1252 readl(base + OMR0);
1253 writel(0, base + IMR1);
1254 readl(base + IMR1);
1255 writel(0, base + OMR1);
1256 readl(base + OMR1); /* flush */
1257 spin_lock_irqsave(hba->host->host_lock, flags);
1258 hba->req_head = 0;
1259 hba->req_tail = 0;
1260 hba->status_head = 0;
1261 hba->status_tail = 0;
1262 hba->out_req_cnt = 0;
1263 hba->mu_status = MU_STATE_STARTED;
1264 spin_unlock_irqrestore(hba->host->host_lock, flags);
1265 return SUCCESS;
1266 }
1267
1268 static int stex_biosparam(struct scsi_device *sdev,
1269 struct block_device *bdev, sector_t capacity, int geom[])
1270 {
1271 int heads = 255, sectors = 63;
1272
1273 if (capacity < 0x200000) {
1274 heads = 64;
1275 sectors = 32;
1276 }
1277
1278 sector_div(capacity, heads * sectors);
1279
1280 geom[0] = heads;
1281 geom[1] = sectors;
1282 geom[2] = capacity;
1283
1284 return 0;
1285 }
1286
1287 static struct scsi_host_template driver_template = {
1288 .module = THIS_MODULE,
1289 .name = DRV_NAME,
1290 .proc_name = DRV_NAME,
1291 .bios_param = stex_biosparam,
1292 .queuecommand = stex_queuecommand,
1293 .slave_alloc = stex_slave_alloc,
1294 .slave_configure = stex_slave_config,
1295 .slave_destroy = stex_slave_destroy,
1296 .eh_abort_handler = stex_abort,
1297 .eh_host_reset_handler = stex_reset,
1298 .this_id = -1,
1299 };
1300
1301 static struct pci_device_id stex_pci_tbl[] = {
1302 /* st_shasta */
1303 { 0x105a, 0x8350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1304 st_shasta }, /* SuperTrak EX8350/8300/16350/16300 */
1305 { 0x105a, 0xc350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1306 st_shasta }, /* SuperTrak EX12350 */
1307 { 0x105a, 0x4302, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1308 st_shasta }, /* SuperTrak EX4350 */
1309 { 0x105a, 0xe350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1310 st_shasta }, /* SuperTrak EX24350 */
1311
1312 /* st_vsc */
1313 { 0x105a, 0x7250, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_vsc },
1314
1315 /* st_yosemite */
1316 { 0x105a, 0x8650, 0x105a, PCI_ANY_ID, 0, 0, st_yosemite },
1317
1318 /* st_seq */
1319 { 0x105a, 0x3360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_seq },
1320
1321 /* st_yel */
1322 { 0x105a, 0x8650, 0x1033, PCI_ANY_ID, 0, 0, st_yel },
1323 { 0x105a, 0x8760, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_yel },
1324 { } /* terminate list */
1325 };
1326
1327 static struct st_card_info stex_card_info[] = {
1328 /* st_shasta */
1329 {
1330 .max_id = 17,
1331 .max_lun = 8,
1332 .max_channel = 0,
1333 .rq_count = 32,
1334 .rq_size = 1048,
1335 .sts_count = 32,
1336 .alloc_rq = stex_alloc_req,
1337 .map_sg = stex_map_sg,
1338 .send = stex_send_cmd,
1339 },
1340
1341 /* st_vsc */
1342 {
1343 .max_id = 129,
1344 .max_lun = 1,
1345 .max_channel = 0,
1346 .rq_count = 32,
1347 .rq_size = 1048,
1348 .sts_count = 32,
1349 .alloc_rq = stex_alloc_req,
1350 .map_sg = stex_map_sg,
1351 .send = stex_send_cmd,
1352 },
1353
1354 /* st_yosemite */
1355 {
1356 .max_id = 2,
1357 .max_lun = 256,
1358 .max_channel = 0,
1359 .rq_count = 256,
1360 .rq_size = 1048,
1361 .sts_count = 256,
1362 .alloc_rq = stex_alloc_req,
1363 .map_sg = stex_map_sg,
1364 .send = stex_send_cmd,
1365 },
1366
1367 /* st_seq */
1368 {
1369 .max_id = 129,
1370 .max_lun = 1,
1371 .max_channel = 0,
1372 .rq_count = 32,
1373 .rq_size = 1048,
1374 .sts_count = 32,
1375 .alloc_rq = stex_alloc_req,
1376 .map_sg = stex_map_sg,
1377 .send = stex_send_cmd,
1378 },
1379
1380 /* st_yel */
1381 {
1382 .max_id = 129,
1383 .max_lun = 256,
1384 .max_channel = 3,
1385 .rq_count = 801,
1386 .rq_size = 512,
1387 .sts_count = 801,
1388 .alloc_rq = stex_ss_alloc_req,
1389 .map_sg = stex_ss_map_sg,
1390 .send = stex_ss_send_cmd,
1391 },
1392 };
1393
1394 static int stex_set_dma_mask(struct pci_dev * pdev)
1395 {
1396 int ret;
1397
1398 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))
1399 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
1400 return 0;
1401 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1402 if (!ret)
1403 ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
1404 return ret;
1405 }
1406
1407 static int stex_request_irq(struct st_hba *hba)
1408 {
1409 struct pci_dev *pdev = hba->pdev;
1410 int status;
1411
1412 if (msi) {
1413 status = pci_enable_msi(pdev);
1414 if (status != 0)
1415 printk(KERN_ERR DRV_NAME
1416 "(%s): error %d setting up MSI\n",
1417 pci_name(pdev), status);
1418 else
1419 hba->msi_enabled = 1;
1420 } else
1421 hba->msi_enabled = 0;
1422
1423 status = request_irq(pdev->irq, hba->cardtype == st_yel ?
1424 stex_ss_intr : stex_intr, IRQF_SHARED, DRV_NAME, hba);
1425
1426 if (status != 0) {
1427 if (hba->msi_enabled)
1428 pci_disable_msi(pdev);
1429 }
1430 return status;
1431 }
1432
1433 static void stex_free_irq(struct st_hba *hba)
1434 {
1435 struct pci_dev *pdev = hba->pdev;
1436
1437 free_irq(pdev->irq, hba);
1438 if (hba->msi_enabled)
1439 pci_disable_msi(pdev);
1440 }
1441
1442 static int __devinit
1443 stex_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1444 {
1445 struct st_hba *hba;
1446 struct Scsi_Host *host;
1447 const struct st_card_info *ci = NULL;
1448 u32 sts_offset, cp_offset, scratch_offset;
1449 int err;
1450
1451 err = pci_enable_device(pdev);
1452 if (err)
1453 return err;
1454
1455 pci_set_master(pdev);
1456
1457 host = scsi_host_alloc(&driver_template, sizeof(struct st_hba));
1458
1459 if (!host) {
1460 printk(KERN_ERR DRV_NAME "(%s): scsi_host_alloc failed\n",
1461 pci_name(pdev));
1462 err = -ENOMEM;
1463 goto out_disable;
1464 }
1465
1466 hba = (struct st_hba *)host->hostdata;
1467 memset(hba, 0, sizeof(struct st_hba));
1468
1469 err = pci_request_regions(pdev, DRV_NAME);
1470 if (err < 0) {
1471 printk(KERN_ERR DRV_NAME "(%s): request regions failed\n",
1472 pci_name(pdev));
1473 goto out_scsi_host_put;
1474 }
1475
1476 hba->mmio_base = pci_ioremap_bar(pdev, 0);
1477 if ( !hba->mmio_base) {
1478 printk(KERN_ERR DRV_NAME "(%s): memory map failed\n",
1479 pci_name(pdev));
1480 err = -ENOMEM;
1481 goto out_release_regions;
1482 }
1483
1484 err = stex_set_dma_mask(pdev);
1485 if (err) {
1486 printk(KERN_ERR DRV_NAME "(%s): set dma mask failed\n",
1487 pci_name(pdev));
1488 goto out_iounmap;
1489 }
1490
1491 hba->cardtype = (unsigned int) id->driver_data;
1492 ci = &stex_card_info[hba->cardtype];
1493 sts_offset = scratch_offset = (ci->rq_count+1) * ci->rq_size;
1494 if (hba->cardtype == st_yel)
1495 sts_offset += (ci->sts_count+1) * sizeof(u32);
1496 cp_offset = sts_offset + (ci->sts_count+1) * sizeof(struct status_msg);
1497 hba->dma_size = cp_offset + sizeof(struct st_frame);
1498 if (hba->cardtype == st_seq ||
1499 (hba->cardtype == st_vsc && (pdev->subsystem_device & 1))) {
1500 hba->extra_offset = hba->dma_size;
1501 hba->dma_size += ST_ADDITIONAL_MEM;
1502 }
1503 hba->dma_mem = dma_alloc_coherent(&pdev->dev,
1504 hba->dma_size, &hba->dma_handle, GFP_KERNEL);
1505 if (!hba->dma_mem) {
1506 err = -ENOMEM;
1507 printk(KERN_ERR DRV_NAME "(%s): dma mem alloc failed\n",
1508 pci_name(pdev));
1509 goto out_iounmap;
1510 }
1511
1512 hba->ccb = kcalloc(ci->rq_count, sizeof(struct st_ccb), GFP_KERNEL);
1513 if (!hba->ccb) {
1514 err = -ENOMEM;
1515 printk(KERN_ERR DRV_NAME "(%s): ccb alloc failed\n",
1516 pci_name(pdev));
1517 goto out_pci_free;
1518 }
1519
1520 if (hba->cardtype == st_yel)
1521 hba->scratch = (__le32 *)(hba->dma_mem + scratch_offset);
1522 hba->status_buffer = (struct status_msg *)(hba->dma_mem + sts_offset);
1523 hba->copy_buffer = hba->dma_mem + cp_offset;
1524 hba->rq_count = ci->rq_count;
1525 hba->rq_size = ci->rq_size;
1526 hba->sts_count = ci->sts_count;
1527 hba->alloc_rq = ci->alloc_rq;
1528 hba->map_sg = ci->map_sg;
1529 hba->send = ci->send;
1530 hba->mu_status = MU_STATE_STARTING;
1531
1532 if (hba->cardtype == st_yel)
1533 host->sg_tablesize = 38;
1534 else
1535 host->sg_tablesize = 32;
1536 host->can_queue = ci->rq_count;
1537 host->cmd_per_lun = ci->rq_count;
1538 host->max_id = ci->max_id;
1539 host->max_lun = ci->max_lun;
1540 host->max_channel = ci->max_channel;
1541 host->unique_id = host->host_no;
1542 host->max_cmd_len = STEX_CDB_LENGTH;
1543
1544 hba->host = host;
1545 hba->pdev = pdev;
1546
1547 err = stex_request_irq(hba);
1548 if (err) {
1549 printk(KERN_ERR DRV_NAME "(%s): request irq failed\n",
1550 pci_name(pdev));
1551 goto out_ccb_free;
1552 }
1553
1554 err = stex_handshake(hba);
1555 if (err)
1556 goto out_free_irq;
1557
1558 err = scsi_init_shared_tag_map(host, host->can_queue);
1559 if (err) {
1560 printk(KERN_ERR DRV_NAME "(%s): init shared queue failed\n",
1561 pci_name(pdev));
1562 goto out_free_irq;
1563 }
1564
1565 pci_set_drvdata(pdev, hba);
1566
1567 err = scsi_add_host(host, &pdev->dev);
1568 if (err) {
1569 printk(KERN_ERR DRV_NAME "(%s): scsi_add_host failed\n",
1570 pci_name(pdev));
1571 goto out_free_irq;
1572 }
1573
1574 scsi_scan_host(host);
1575
1576 return 0;
1577
1578 out_free_irq:
1579 stex_free_irq(hba);
1580 out_ccb_free:
1581 kfree(hba->ccb);
1582 out_pci_free:
1583 dma_free_coherent(&pdev->dev, hba->dma_size,
1584 hba->dma_mem, hba->dma_handle);
1585 out_iounmap:
1586 iounmap(hba->mmio_base);
1587 out_release_regions:
1588 pci_release_regions(pdev);
1589 out_scsi_host_put:
1590 scsi_host_put(host);
1591 out_disable:
1592 pci_disable_device(pdev);
1593
1594 return err;
1595 }
1596
1597 static void stex_hba_stop(struct st_hba *hba)
1598 {
1599 struct req_msg *req;
1600 struct st_msg_header *msg_h;
1601 unsigned long flags;
1602 unsigned long before;
1603 u16 tag = 0;
1604
1605 spin_lock_irqsave(hba->host->host_lock, flags);
1606 req = hba->alloc_rq(hba);
1607 if (hba->cardtype == st_yel) {
1608 msg_h = (struct st_msg_header *)req - 1;
1609 memset(msg_h, 0, hba->rq_size);
1610 } else
1611 memset(req, 0, hba->rq_size);
1612
1613 if (hba->cardtype == st_yosemite || hba->cardtype == st_yel) {
1614 req->cdb[0] = MGT_CMD;
1615 req->cdb[1] = MGT_CMD_SIGNATURE;
1616 req->cdb[2] = CTLR_CONFIG_CMD;
1617 req->cdb[3] = CTLR_SHUTDOWN;
1618 } else {
1619 req->cdb[0] = CONTROLLER_CMD;
1620 req->cdb[1] = CTLR_POWER_STATE_CHANGE;
1621 req->cdb[2] = CTLR_POWER_SAVING;
1622 }
1623
1624 hba->ccb[tag].cmd = NULL;
1625 hba->ccb[tag].sg_count = 0;
1626 hba->ccb[tag].sense_bufflen = 0;
1627 hba->ccb[tag].sense_buffer = NULL;
1628 hba->ccb[tag].req_type = PASSTHRU_REQ_TYPE;
1629
1630 hba->send(hba, req, tag);
1631 spin_unlock_irqrestore(hba->host->host_lock, flags);
1632
1633 before = jiffies;
1634 while (hba->ccb[tag].req_type & PASSTHRU_REQ_TYPE) {
1635 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) {
1636 hba->ccb[tag].req_type = 0;
1637 return;
1638 }
1639 msleep(1);
1640 }
1641 }
1642
1643 static void stex_hba_free(struct st_hba *hba)
1644 {
1645 stex_free_irq(hba);
1646
1647 iounmap(hba->mmio_base);
1648
1649 pci_release_regions(hba->pdev);
1650
1651 kfree(hba->ccb);
1652
1653 dma_free_coherent(&hba->pdev->dev, hba->dma_size,
1654 hba->dma_mem, hba->dma_handle);
1655 }
1656
1657 static void stex_remove(struct pci_dev *pdev)
1658 {
1659 struct st_hba *hba = pci_get_drvdata(pdev);
1660
1661 scsi_remove_host(hba->host);
1662
1663 pci_set_drvdata(pdev, NULL);
1664
1665 stex_hba_stop(hba);
1666
1667 stex_hba_free(hba);
1668
1669 scsi_host_put(hba->host);
1670
1671 pci_disable_device(pdev);
1672 }
1673
1674 static void stex_shutdown(struct pci_dev *pdev)
1675 {
1676 struct st_hba *hba = pci_get_drvdata(pdev);
1677
1678 stex_hba_stop(hba);
1679 }
1680
1681 MODULE_DEVICE_TABLE(pci, stex_pci_tbl);
1682
1683 static struct pci_driver stex_pci_driver = {
1684 .name = DRV_NAME,
1685 .id_table = stex_pci_tbl,
1686 .probe = stex_probe,
1687 .remove = __devexit_p(stex_remove),
1688 .shutdown = stex_shutdown,
1689 };
1690
1691 static int __init stex_init(void)
1692 {
1693 printk(KERN_INFO DRV_NAME
1694 ": Promise SuperTrak EX Driver version: %s\n",
1695 ST_DRIVER_VERSION);
1696
1697 return pci_register_driver(&stex_pci_driver);
1698 }
1699
1700 static void __exit stex_exit(void)
1701 {
1702 pci_unregister_driver(&stex_pci_driver);
1703 }
1704
1705 module_init(stex_init);
1706 module_exit(stex_exit);
Support for the Chinese Samsung S3C2440 based development boards