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authorJeff Garzik <jeff@garzik.org>2006-09-01 03:12:19 -0400
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-09-02 14:54:02 -0400
commit5a25ba1677ab8d63890016a8c1bca68a3e0fbc7d (patch)
tree38a1a9361914c689a9914535e67c8bdfde92721e
parent69bdd88ca2670c321fef774e77059516f836c6f2 (diff)
[SCSI] Add Promise SuperTrak driver
Add Promise SuperTrak 'stex' driver, supporting SuperTrak EX8350/8300/16350/16300 controllers. The controller's firmware accepts SCSI commands, handing them to the underlying RAID or JBOD disks. The driver consisted of the following cleanups and fixes, beyond its initial submission: Ed Lin: stex: cleanup and minor fixes stex: add new device ids stex: update internal copy code path stex: add hard reset function stex: adjust command timeout in slave_config routine stex: use more efficient method for unload/shutdown flush Jeff Garzik: [SCSI] Add Promise SuperTrak 'shasta' driver. Rename drivers/scsi/shasta.c to stex.c ("SuperTrak EX"). [SCSI] stex: update with community comments from 'Promise SuperTrak' thread [SCSI] stex: Fix warning, trim trailing whitespace. [SCSI] stex: remove last remnants of "shasta" project code name [SCSI] stex: removed 6-byte command emulation [SCSI] stex: minor cleanups [SCSI] stex: minor fixes: irq flag, error return value [SCSI] stex: use dma_alloc_coherent() Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat
-rw-r--r--drivers/scsi/Kconfig7
-rw-r--r--drivers/scsi/Makefile1
-rw-r--r--drivers/scsi/stex.c1316
3 files changed, 1324 insertions, 0 deletions
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 7de5fdfdab67..c8c606589ea6 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -1070,6 +1070,13 @@ config 53C700_LE_ON_BE
1070 depends on SCSI_LASI700 1070 depends on SCSI_LASI700
1071 default y 1071 default y
1072 1072
1073config SCSI_STEX
1074 tristate "Promise SuperTrak EX Series support"
1075 depends on PCI && SCSI
1076 ---help---
1077 This driver supports Promise SuperTrak EX8350/8300/16350/16300
1078 Storage controllers.
1079
1073config SCSI_SYM53C8XX_2 1080config SCSI_SYM53C8XX_2
1074 tristate "SYM53C8XX Version 2 SCSI support" 1081 tristate "SYM53C8XX Version 2 SCSI support"
1075 depends on PCI && SCSI 1082 depends on PCI && SCSI
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index 83da70decdd1..fd9aeb1ba07f 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -141,6 +141,7 @@ obj-$(CONFIG_SCSI_SATA_ULI) += libata.o sata_uli.o
141obj-$(CONFIG_SCSI_SATA_MV) += libata.o sata_mv.o 141obj-$(CONFIG_SCSI_SATA_MV) += libata.o sata_mv.o
142obj-$(CONFIG_SCSI_PDC_ADMA) += libata.o pdc_adma.o 142obj-$(CONFIG_SCSI_PDC_ADMA) += libata.o pdc_adma.o
143obj-$(CONFIG_SCSI_HPTIOP) += hptiop.o 143obj-$(CONFIG_SCSI_HPTIOP) += hptiop.o
144obj-$(CONFIG_SCSI_STEX) += stex.o
144 145
145obj-$(CONFIG_ARM) += arm/ 146obj-$(CONFIG_ARM) += arm/
146 147
diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c
new file mode 100644
index 000000000000..fd093302bf1a
--- /dev/null
+++ b/drivers/scsi/stex.c
@@ -0,0 +1,1316 @@
1/*
2 * SuperTrak EX Series Storage Controller driver for Linux
3 *
4 * Copyright (C) 2005, 2006 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 * Version: 2.9.0.13
15 *
16 */
17
18#include <linux/init.h>
19#include <linux/errno.h>
20#include <linux/kernel.h>
21#include <linux/delay.h>
22#include <linux/sched.h>
23#include <linux/time.h>
24#include <linux/pci.h>
25#include <linux/blkdev.h>
26#include <linux/interrupt.h>
27#include <linux/types.h>
28#include <linux/module.h>
29#include <linux/spinlock.h>
30#include <asm/io.h>
31#include <asm/irq.h>
32#include <asm/byteorder.h>
33#include <scsi/scsi.h>
34#include <scsi/scsi_device.h>
35#include <scsi/scsi_cmnd.h>
36#include <scsi/scsi_host.h>
37
38#define DRV_NAME "stex"
39#define ST_DRIVER_VERSION "2.9.0.13"
40#define ST_VER_MAJOR 2
41#define ST_VER_MINOR 9
42#define ST_OEM 0
43#define ST_BUILD_VER 13
44
45enum {
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 /* MU register value */
59 MU_INBOUND_DOORBELL_HANDSHAKE = 1,
60 MU_INBOUND_DOORBELL_REQHEADCHANGED = 2,
61 MU_INBOUND_DOORBELL_STATUSTAILCHANGED = 4,
62 MU_INBOUND_DOORBELL_HMUSTOPPED = 8,
63 MU_INBOUND_DOORBELL_RESET = 16,
64
65 MU_OUTBOUND_DOORBELL_HANDSHAKE = 1,
66 MU_OUTBOUND_DOORBELL_REQUESTTAILCHANGED = 2,
67 MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED = 4,
68 MU_OUTBOUND_DOORBELL_BUSCHANGE = 8,
69 MU_OUTBOUND_DOORBELL_HASEVENT = 16,
70
71 /* MU status code */
72 MU_STATE_STARTING = 1,
73 MU_STATE_FMU_READY_FOR_HANDSHAKE = 2,
74 MU_STATE_SEND_HANDSHAKE_FRAME = 3,
75 MU_STATE_STARTED = 4,
76 MU_STATE_RESETTING = 5,
77
78 MU_MAX_DELAY_TIME = 240000,
79 MU_HANDSHAKE_SIGNATURE = 0x55aaaa55,
80 HMU_PARTNER_TYPE = 2,
81
82 /* firmware returned values */
83 SRB_STATUS_SUCCESS = 0x01,
84 SRB_STATUS_ERROR = 0x04,
85 SRB_STATUS_BUSY = 0x05,
86 SRB_STATUS_INVALID_REQUEST = 0x06,
87 SRB_STATUS_SELECTION_TIMEOUT = 0x0A,
88 SRB_SEE_SENSE = 0x80,
89
90 /* task attribute */
91 TASK_ATTRIBUTE_SIMPLE = 0x0,
92 TASK_ATTRIBUTE_HEADOFQUEUE = 0x1,
93 TASK_ATTRIBUTE_ORDERED = 0x2,
94 TASK_ATTRIBUTE_ACA = 0x4,
95
96 /* request count, etc. */
97 MU_MAX_REQUEST = 32,
98 TAG_BITMAP_LENGTH = MU_MAX_REQUEST,
99
100 /* one message wasted, use MU_MAX_REQUEST+1
101 to handle MU_MAX_REQUEST messages */
102 MU_REQ_COUNT = (MU_MAX_REQUEST + 1),
103 MU_STATUS_COUNT = (MU_MAX_REQUEST + 1),
104
105 STEX_CDB_LENGTH = MAX_COMMAND_SIZE,
106 REQ_VARIABLE_LEN = 1024,
107 STATUS_VAR_LEN = 128,
108 ST_CAN_QUEUE = MU_MAX_REQUEST,
109 ST_CMD_PER_LUN = MU_MAX_REQUEST,
110 ST_MAX_SG = 32,
111
112 /* sg flags */
113 SG_CF_EOT = 0x80, /* end of table */
114 SG_CF_64B = 0x40, /* 64 bit item */
115 SG_CF_HOST = 0x20, /* sg in host memory */
116
117 ST_MAX_ARRAY_SUPPORTED = 16,
118 ST_MAX_TARGET_NUM = (ST_MAX_ARRAY_SUPPORTED+1),
119 ST_MAX_LUN_PER_TARGET = 16,
120
121 st_shasta = 0,
122 st_vsc = 1,
123
124 PASSTHRU_REQ_TYPE = 0x00000001,
125 PASSTHRU_REQ_NO_WAKEUP = 0x00000100,
126 ST_INTERNAL_TIMEOUT = 30,
127
128 /* vendor specific commands of Promise */
129 ARRAY_CMD = 0xe0,
130 CONTROLLER_CMD = 0xe1,
131 DEBUGGING_CMD = 0xe2,
132 PASSTHRU_CMD = 0xe3,
133
134 PASSTHRU_GET_ADAPTER = 0x05,
135 PASSTHRU_GET_DRVVER = 0x10,
136 CTLR_POWER_STATE_CHANGE = 0x0e,
137 CTLR_POWER_SAVING = 0x01,
138
139 PASSTHRU_SIGNATURE = 0x4e415041,
140
141 INQUIRY_EVPD = 0x01,
142};
143
144struct st_sgitem {
145 u8 ctrl; /* SG_CF_xxx */
146 u8 reserved[3];
147 __le32 count;
148 __le32 addr;
149 __le32 addr_hi;
150};
151
152struct st_sgtable {
153 __le16 sg_count;
154 __le16 max_sg_count;
155 __le32 sz_in_byte;
156 struct st_sgitem table[ST_MAX_SG];
157};
158
159struct handshake_frame {
160 __le32 rb_phy; /* request payload queue physical address */
161 __le32 rb_phy_hi;
162 __le16 req_sz; /* size of each request payload */
163 __le16 req_cnt; /* count of reqs the buffer can hold */
164 __le16 status_sz; /* size of each status payload */
165 __le16 status_cnt; /* count of status the buffer can hold */
166 __le32 hosttime; /* seconds from Jan 1, 1970 (GMT) */
167 __le32 hosttime_hi;
168 u8 partner_type; /* who sends this frame */
169 u8 reserved0[7];
170 __le32 partner_ver_major;
171 __le32 partner_ver_minor;
172 __le32 partner_ver_oem;
173 __le32 partner_ver_build;
174 u32 reserved1[4];
175};
176
177struct req_msg {
178 __le16 tag;
179 u8 lun;
180 u8 target;
181 u8 task_attr;
182 u8 task_manage;
183 u8 prd_entry;
184 u8 payload_sz; /* payload size in 4-byte */
185 u8 cdb[STEX_CDB_LENGTH];
186 u8 variable[REQ_VARIABLE_LEN];
187};
188
189struct status_msg {
190 __le16 tag;
191 u8 lun;
192 u8 target;
193 u8 srb_status;
194 u8 scsi_status;
195 u8 reserved;
196 u8 payload_sz; /* payload size in 4-byte */
197 u8 variable[STATUS_VAR_LEN];
198};
199
200struct ver_info {
201 u32 major;
202 u32 minor;
203 u32 oem;
204 u32 build;
205 u32 reserved[2];
206};
207
208struct st_frame {
209 u32 base[6];
210 u32 rom_addr;
211
212 struct ver_info drv_ver;
213 struct ver_info bios_ver;
214
215 u32 bus;
216 u32 slot;
217 u32 irq_level;
218 u32 irq_vec;
219 u32 id;
220 u32 subid;
221
222 u32 dimm_size;
223 u8 dimm_type;
224 u8 reserved[3];
225
226 u32 channel;
227 u32 reserved1;
228};
229
230struct st_drvver {
231 u32 major;
232 u32 minor;
233 u32 oem;
234 u32 build;
235 u32 signature[2];
236 u8 console_id;
237 u8 host_no;
238 u8 reserved0[2];
239 u32 reserved[3];
240};
241
242#define MU_REQ_BUFFER_SIZE (MU_REQ_COUNT * sizeof(struct req_msg))
243#define MU_STATUS_BUFFER_SIZE (MU_STATUS_COUNT * sizeof(struct status_msg))
244#define MU_BUFFER_SIZE (MU_REQ_BUFFER_SIZE + MU_STATUS_BUFFER_SIZE)
245#define STEX_BUFFER_SIZE (MU_BUFFER_SIZE + sizeof(struct st_frame))
246
247struct st_ccb {
248 struct req_msg *req;
249 struct scsi_cmnd *cmd;
250
251 void *sense_buffer;
252 unsigned int sense_bufflen;
253 int sg_count;
254
255 u32 req_type;
256 u8 srb_status;
257 u8 scsi_status;
258};
259
260struct st_hba {
261 void __iomem *mmio_base; /* iomapped PCI memory space */
262 void *dma_mem;
263 dma_addr_t dma_handle;
264
265 struct Scsi_Host *host;
266 struct pci_dev *pdev;
267
268 u32 tag;
269 u32 req_head;
270 u32 req_tail;
271 u32 status_head;
272 u32 status_tail;
273
274 struct status_msg *status_buffer;
275 void *copy_buffer; /* temp buffer for driver-handled commands */
276 struct st_ccb ccb[MU_MAX_REQUEST];
277 struct st_ccb *wait_ccb;
278 wait_queue_head_t waitq;
279
280 unsigned int mu_status;
281 int out_req_cnt;
282
283 unsigned int cardtype;
284};
285
286static const char console_inq_page[] =
287{
288 0x03,0x00,0x03,0x03,0xFA,0x00,0x00,0x30,
289 0x50,0x72,0x6F,0x6D,0x69,0x73,0x65,0x20, /* "Promise " */
290 0x52,0x41,0x49,0x44,0x20,0x43,0x6F,0x6E, /* "RAID Con" */
291 0x73,0x6F,0x6C,0x65,0x20,0x20,0x20,0x20, /* "sole " */
292 0x31,0x2E,0x30,0x30,0x20,0x20,0x20,0x20, /* "1.00 " */
293 0x53,0x58,0x2F,0x52,0x53,0x41,0x46,0x2D, /* "SX/RSAF-" */
294 0x54,0x45,0x31,0x2E,0x30,0x30,0x20,0x20, /* "TE1.00 " */
295 0x0C,0x20,0x20,0x20,0x20,0x20,0x20,0x20
296};
297
298MODULE_AUTHOR("Ed Lin");
299MODULE_DESCRIPTION("Promise Technology SuperTrak EX Controllers");
300MODULE_LICENSE("GPL");
301MODULE_VERSION(ST_DRIVER_VERSION);
302
303static void stex_gettime(__le32 *time)
304{
305 struct timeval tv;
306 do_gettimeofday(&tv);
307
308 *time = cpu_to_le32(tv.tv_sec & 0xffffffff);
309 *(time + 1) = cpu_to_le32((tv.tv_sec >> 16) >> 16);
310}
311
312static u16 __stex_alloc_tag(unsigned long *bitmap)
313{
314 int i;
315 i = find_first_zero_bit(bitmap, TAG_BITMAP_LENGTH);
316 if (i < TAG_BITMAP_LENGTH)
317 __set_bit(i, bitmap);
318 return (u16)i;
319}
320
321static u16 stex_alloc_tag(struct st_hba *hba, unsigned long *bitmap)
322{
323 unsigned long flags;
324 u16 tag;
325
326 spin_lock_irqsave(hba->host->host_lock, flags);
327 tag = __stex_alloc_tag(bitmap);
328 spin_unlock_irqrestore(hba->host->host_lock, flags);
329 return tag;
330}
331
332static void __stex_free_tag(unsigned long *bitmap, u16 tag)
333{
334 __clear_bit((int)tag, bitmap);
335}
336
337static void stex_free_tag(struct st_hba *hba, unsigned long *bitmap, u16 tag)
338{
339 unsigned long flags;
340
341 spin_lock_irqsave(hba->host->host_lock, flags);
342 __stex_free_tag(bitmap, tag);
343 spin_unlock_irqrestore(hba->host->host_lock, flags);
344}
345
346static struct status_msg *stex_get_status(struct st_hba *hba)
347{
348 struct status_msg *status =
349 hba->status_buffer + hba->status_tail;
350
351 ++hba->status_tail;
352 hba->status_tail %= MU_STATUS_COUNT;
353
354 return status;
355}
356
357static void stex_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq)
358{
359 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
360
361 cmd->sense_buffer[0] = 0x70; /* fixed format, current */
362 cmd->sense_buffer[2] = sk;
363 cmd->sense_buffer[7] = 18 - 8; /* additional sense length */
364 cmd->sense_buffer[12] = asc;
365 cmd->sense_buffer[13] = ascq;
366}
367
368static void stex_invalid_field(struct scsi_cmnd *cmd,
369 void (*done)(struct scsi_cmnd *))
370{
371 /* "Invalid field in cbd" */
372 stex_set_sense(cmd, ILLEGAL_REQUEST, 0x24, 0x0);
373 done(cmd);
374}
375
376static struct req_msg *stex_alloc_req(struct st_hba *hba)
377{
378 struct req_msg *req = ((struct req_msg *)hba->dma_mem) +
379 hba->req_head;
380
381 ++hba->req_head;
382 hba->req_head %= MU_REQ_COUNT;
383
384 return req;
385}
386
387static int stex_map_sg(struct st_hba *hba,
388 struct req_msg *req, struct st_ccb *ccb)
389{
390 struct pci_dev *pdev = hba->pdev;
391 struct scsi_cmnd *cmd;
392 dma_addr_t dma_handle;
393 struct scatterlist *src;
394 struct st_sgtable *dst;
395 int i;
396
397 cmd = ccb->cmd;
398 dst = (struct st_sgtable *)req->variable;
399 dst->max_sg_count = cpu_to_le16(ST_MAX_SG);
400 dst->sz_in_byte = cpu_to_le32(cmd->request_bufflen);
401
402 if (cmd->use_sg) {
403 int n_elem;
404
405 src = (struct scatterlist *) cmd->request_buffer;
406 n_elem = pci_map_sg(pdev, src,
407 cmd->use_sg, cmd->sc_data_direction);
408 if (n_elem <= 0)
409 return -EIO;
410
411 ccb->sg_count = n_elem;
412 dst->sg_count = cpu_to_le16((u16)n_elem);
413
414 for (i = 0; i < n_elem; i++, src++) {
415 dst->table[i].count = cpu_to_le32((u32)sg_dma_len(src));
416 dst->table[i].addr =
417 cpu_to_le32(sg_dma_address(src) & 0xffffffff);
418 dst->table[i].addr_hi =
419 cpu_to_le32((sg_dma_address(src) >> 16) >> 16);
420 dst->table[i].ctrl = SG_CF_64B | SG_CF_HOST;
421 }
422 dst->table[--i].ctrl |= SG_CF_EOT;
423 return 0;
424 }
425
426 dma_handle = pci_map_single(pdev, cmd->request_buffer,
427 cmd->request_bufflen, cmd->sc_data_direction);
428 cmd->SCp.dma_handle = dma_handle;
429
430 ccb->sg_count = 1;
431 dst->sg_count = cpu_to_le16(1);
432 dst->table[0].addr = cpu_to_le32(dma_handle & 0xffffffff);
433 dst->table[0].addr_hi = cpu_to_le32((dma_handle >> 16) >> 16);
434 dst->table[0].count = cpu_to_le32((u32)cmd->request_bufflen);
435 dst->table[0].ctrl = SG_CF_EOT | SG_CF_64B | SG_CF_HOST;
436
437 return 0;
438}
439
440static void stex_internal_copy(struct scsi_cmnd *cmd,
441 const void *src, size_t *count, int sg_count)
442{
443 size_t lcount;
444 size_t len;
445 void *s, *d, *base = NULL;
446 if (*count > cmd->request_bufflen)
447 *count = cmd->request_bufflen;
448 lcount = *count;
449 while (lcount) {
450 len = lcount;
451 s = (void *)src;
452 if (cmd->use_sg) {
453 size_t offset = *count - lcount;
454 s += offset;
455 base = scsi_kmap_atomic_sg(cmd->request_buffer,
456 sg_count, &offset, &len);
457 if (base == NULL) {
458 *count -= lcount;
459 return;
460 }
461 d = base + offset;
462 } else
463 d = cmd->request_buffer;
464
465 memcpy(d, s, len);
466
467 lcount -= len;
468 if (cmd->use_sg)
469 scsi_kunmap_atomic_sg(base);
470 }
471}
472
473static int stex_direct_copy(struct scsi_cmnd *cmd,
474 const void *src, size_t count)
475{
476 struct st_hba *hba = (struct st_hba *) &cmd->device->host->hostdata[0];
477 size_t cp_len = count;
478 int n_elem = 0;
479
480 if (cmd->use_sg) {
481 n_elem = pci_map_sg(hba->pdev, cmd->request_buffer,
482 cmd->use_sg, cmd->sc_data_direction);
483 if (n_elem <= 0)
484 return 0;
485 }
486
487 stex_internal_copy(cmd, src, &cp_len, n_elem);
488
489 if (cmd->use_sg)
490 pci_unmap_sg(hba->pdev, cmd->request_buffer,
491 cmd->use_sg, cmd->sc_data_direction);
492 return cp_len == count;
493}
494
495static void stex_controller_info(struct st_hba *hba, struct st_ccb *ccb)
496{
497 struct st_frame *p;
498 size_t count = sizeof(struct st_frame);
499
500 p = hba->copy_buffer;
501 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 stex_internal_copy(ccb->cmd, p, &count, ccb->sg_count);
519}
520
521static void
522stex_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag)
523{
524 req->tag = cpu_to_le16(tag);
525 req->task_attr = TASK_ATTRIBUTE_SIMPLE;
526 req->task_manage = 0; /* not supported yet */
527 req->payload_sz = (u8)(sizeof(struct req_msg)/sizeof(u32));
528
529 hba->ccb[tag].req = req;
530 hba->out_req_cnt++;
531
532 writel(hba->req_head, hba->mmio_base + IMR0);
533 writel(MU_INBOUND_DOORBELL_REQHEADCHANGED, hba->mmio_base + IDBL);
534 readl(hba->mmio_base + IDBL); /* flush */
535}
536
537static int
538stex_slave_config(struct scsi_device *sdev)
539{
540 sdev->use_10_for_rw = 1;
541 sdev->use_10_for_ms = 1;
542 sdev->timeout = 60 * HZ;
543 return 0;
544}
545
546static void
547stex_slave_destroy(struct scsi_device *sdev)
548{
549 struct st_hba *hba = (struct st_hba *) sdev->host->hostdata;
550 struct req_msg *req;
551 unsigned long flags;
552 unsigned long before;
553 u16 tag;
554
555 if (sdev->type != TYPE_DISK)
556 return;
557
558 before = jiffies;
559 while ((tag = stex_alloc_tag(hba, (unsigned long *)&hba->tag))
560 == TAG_BITMAP_LENGTH) {
561 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ))
562 return;
563 msleep(10);
564 }
565
566 spin_lock_irqsave(hba->host->host_lock, flags);
567 req = stex_alloc_req(hba);
568 memset(req->cdb, 0, STEX_CDB_LENGTH);
569
570 req->target = sdev->id;
571 req->lun = sdev->channel; /* firmware lun issue work around */
572 req->cdb[0] = SYNCHRONIZE_CACHE;
573
574 hba->ccb[tag].cmd = NULL;
575 hba->ccb[tag].sg_count = 0;
576 hba->ccb[tag].sense_bufflen = 0;
577 hba->ccb[tag].sense_buffer = NULL;
578 hba->ccb[tag].req_type |= PASSTHRU_REQ_TYPE;
579
580 stex_send_cmd(hba, req, tag);
581 spin_unlock_irqrestore(hba->host->host_lock, flags);
582
583 wait_event_timeout(hba->waitq,
584 !(hba->ccb[tag].req_type), ST_INTERNAL_TIMEOUT * HZ);
585 if (hba->ccb[tag].req_type & PASSTHRU_REQ_TYPE)
586 return;
587
588 stex_free_tag(hba, (unsigned long *)&hba->tag, tag);
589}
590
591static int
592stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
593{
594 struct st_hba *hba;
595 struct Scsi_Host *host;
596 unsigned int id,lun;
597 struct req_msg *req;
598 u16 tag;
599 host = cmd->device->host;
600 id = cmd->device->id;
601 lun = cmd->device->channel; /* firmware lun issue work around */
602 hba = (struct st_hba *) &host->hostdata[0];
603
604 switch (cmd->cmnd[0]) {
605 case MODE_SENSE_10:
606 {
607 static char ms10_caching_page[12] =
608 { 0, 0x12, 0, 0, 0, 0, 0, 0, 0x8, 0xa, 0x4, 0 };
609 unsigned char page;
610 page = cmd->cmnd[2] & 0x3f;
611 if (page == 0x8 || page == 0x3f) {
612 stex_direct_copy(cmd, ms10_caching_page,
613 sizeof(ms10_caching_page));
614 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
615 done(cmd);
616 } else
617 stex_invalid_field(cmd, done);
618 return 0;
619 }
620 case INQUIRY:
621 if (id != ST_MAX_ARRAY_SUPPORTED)
622 break;
623 if (lun == 0 && (cmd->cmnd[1] & INQUIRY_EVPD) == 0) {
624 stex_direct_copy(cmd, console_inq_page,
625 sizeof(console_inq_page));
626 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
627 done(cmd);
628 } else
629 stex_invalid_field(cmd, done);
630 return 0;
631 case PASSTHRU_CMD:
632 if (cmd->cmnd[1] == PASSTHRU_GET_DRVVER) {
633 struct st_drvver ver;
634 ver.major = ST_VER_MAJOR;
635 ver.minor = ST_VER_MINOR;
636 ver.oem = ST_OEM;
637 ver.build = ST_BUILD_VER;
638 ver.signature[0] = PASSTHRU_SIGNATURE;
639 ver.console_id = ST_MAX_ARRAY_SUPPORTED;
640 ver.host_no = hba->host->host_no;
641 cmd->result = stex_direct_copy(cmd, &ver, sizeof(ver)) ?
642 DID_OK << 16 | COMMAND_COMPLETE << 8 :
643 DID_ERROR << 16 | COMMAND_COMPLETE << 8;
644 done(cmd);
645 return 0;
646 }
647 default:
648 break;
649 }
650
651 cmd->scsi_done = done;
652
653 if (unlikely((tag = __stex_alloc_tag((unsigned long *)&hba->tag))
654 == TAG_BITMAP_LENGTH))
655 return SCSI_MLQUEUE_HOST_BUSY;
656
657 req = stex_alloc_req(hba);
658 req->lun = lun;
659 req->target = id;
660
661 /* cdb */
662 memcpy(req->cdb, cmd->cmnd, STEX_CDB_LENGTH);
663
664 hba->ccb[tag].cmd = cmd;
665 hba->ccb[tag].sense_bufflen = SCSI_SENSE_BUFFERSIZE;
666 hba->ccb[tag].sense_buffer = cmd->sense_buffer;
667 hba->ccb[tag].req_type = 0;
668
669 if (cmd->sc_data_direction != DMA_NONE)
670 stex_map_sg(hba, req, &hba->ccb[tag]);
671
672 stex_send_cmd(hba, req, tag);
673 return 0;
674}
675
676static void stex_unmap_sg(struct st_hba *hba, struct scsi_cmnd *cmd)
677{
678 if (cmd->sc_data_direction != DMA_NONE) {
679 if (cmd->use_sg)
680 pci_unmap_sg(hba->pdev, cmd->request_buffer,
681 cmd->use_sg, cmd->sc_data_direction);
682 else
683 pci_unmap_single(hba->pdev, cmd->SCp.dma_handle,
684 cmd->request_bufflen, cmd->sc_data_direction);
685 }
686}
687
688static void stex_scsi_done(struct st_ccb *ccb)
689{
690 struct scsi_cmnd *cmd = ccb->cmd;
691 int result;
692
693 if (ccb->srb_status == SRB_STATUS_SUCCESS || ccb->srb_status == 0) {
694 result = ccb->scsi_status;
695 switch (ccb->scsi_status) {
696 case SAM_STAT_GOOD:
697 result |= DID_OK << 16 | COMMAND_COMPLETE << 8;
698 break;
699 case SAM_STAT_CHECK_CONDITION:
700 result |= DRIVER_SENSE << 24;
701 break;
702 case SAM_STAT_BUSY:
703 result |= DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
704 break;
705 default:
706 result |= DID_ERROR << 16 | COMMAND_COMPLETE << 8;
707 break;
708 }
709 }
710 else if (ccb->srb_status & SRB_SEE_SENSE)
711 result = DRIVER_SENSE << 24 | SAM_STAT_CHECK_CONDITION;
712 else switch (ccb->srb_status) {
713 case SRB_STATUS_SELECTION_TIMEOUT:
714 result = DID_NO_CONNECT << 16 | COMMAND_COMPLETE << 8;
715 break;
716 case SRB_STATUS_BUSY:
717 result = DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
718 break;
719 case SRB_STATUS_INVALID_REQUEST:
720 case SRB_STATUS_ERROR:
721 default:
722 result = DID_ERROR << 16 | COMMAND_COMPLETE << 8;
723 break;
724 }
725
726 cmd->result = result;
727 cmd->scsi_done(cmd);
728}
729
730static void stex_copy_data(struct st_ccb *ccb,
731 struct status_msg *resp, unsigned int variable)
732{
733 size_t count = variable;
734 if (resp->scsi_status != SAM_STAT_GOOD) {
735 if (ccb->sense_buffer != NULL)
736 memcpy(ccb->sense_buffer, resp->variable,
737 min(variable, ccb->sense_bufflen));
738 return;
739 }
740
741 if (ccb->cmd == NULL)
742 return;
743 stex_internal_copy(ccb->cmd, resp->variable, &count, ccb->sg_count);
744}
745
746static 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 (!(doorbell & MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED))
755 return;
756
757 /* status payloads */
758 hba->status_head = readl(base + OMR1);
759 if (unlikely(hba->status_head >= MU_STATUS_COUNT)) {
760 printk(KERN_WARNING DRV_NAME "(%s): invalid status head\n",
761 pci_name(hba->pdev));
762 return;
763 }
764
765 if (unlikely(hba->mu_status != MU_STATE_STARTED ||
766 hba->out_req_cnt <= 0)) {
767 hba->status_tail = hba->status_head;
768 goto update_status;
769 }
770
771 while (hba->status_tail != hba->status_head) {
772 resp = stex_get_status(hba);
773 tag = le16_to_cpu(resp->tag);
774 if (unlikely(tag >= TAG_BITMAP_LENGTH)) {
775 printk(KERN_WARNING DRV_NAME
776 "(%s): invalid tag\n", pci_name(hba->pdev));
777 continue;
778 }
779 if (unlikely((hba->tag & (1 << tag)) == 0)) {
780 printk(KERN_WARNING DRV_NAME
781 "(%s): null tag\n", pci_name(hba->pdev));
782 continue;
783 }
784
785 hba->out_req_cnt--;
786 ccb = &hba->ccb[tag];
787 if (hba->wait_ccb == ccb)
788 hba->wait_ccb = NULL;
789 if (unlikely(ccb->req == NULL)) {
790 printk(KERN_WARNING DRV_NAME
791 "(%s): lagging req\n", pci_name(hba->pdev));
792 __stex_free_tag((unsigned long *)&hba->tag, tag);
793 stex_unmap_sg(hba, ccb->cmd); /* ??? */
794 continue;
795 }
796
797 size = resp->payload_sz * sizeof(u32); /* payload size */
798 if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN ||
799 size > sizeof(*resp))) {
800 printk(KERN_WARNING DRV_NAME "(%s): bad status size\n",
801 pci_name(hba->pdev));
802 } else {
803 size -= sizeof(*resp) - STATUS_VAR_LEN; /* copy size */
804 if (size)
805 stex_copy_data(ccb, resp, size);
806 }
807
808 ccb->srb_status = resp->srb_status;
809 ccb->scsi_status = resp->scsi_status;
810
811 if (ccb->req_type & PASSTHRU_REQ_TYPE) {
812 if (ccb->req_type & PASSTHRU_REQ_NO_WAKEUP) {
813 ccb->req_type = 0;
814 continue;
815 }
816 ccb->req_type = 0;
817 if (waitqueue_active(&hba->waitq))
818 wake_up(&hba->waitq);
819 continue;
820 }
821 if (ccb->cmd->cmnd[0] == PASSTHRU_CMD &&
822 ccb->cmd->cmnd[1] == PASSTHRU_GET_ADAPTER)
823 stex_controller_info(hba, ccb);
824 __stex_free_tag((unsigned long *)&hba->tag, tag);
825 stex_unmap_sg(hba, ccb->cmd);
826 stex_scsi_done(ccb);
827 }
828
829update_status:
830 writel(hba->status_head, base + IMR1);
831 readl(base + IMR1); /* flush */
832}
833
834static irqreturn_t stex_intr(int irq, void *__hba, struct pt_regs *regs)
835{
836 struct st_hba *hba = __hba;
837 void __iomem *base = hba->mmio_base;
838 u32 data;
839 unsigned long flags;
840 int handled = 0;
841
842 spin_lock_irqsave(hba->host->host_lock, flags);
843
844 data = readl(base + ODBL);
845
846 if (data && data != 0xffffffff) {
847 /* clear the interrupt */
848 writel(data, base + ODBL);
849 readl(base + ODBL); /* flush */
850 stex_mu_intr(hba, data);
851 handled = 1;
852 }
853
854 spin_unlock_irqrestore(hba->host->host_lock, flags);
855
856 return IRQ_RETVAL(handled);
857}
858
859static int stex_handshake(struct st_hba *hba)
860{
861 void __iomem *base = hba->mmio_base;
862 struct handshake_frame *h;
863 dma_addr_t status_phys;
864 int i;
865
866 if (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
867 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
868 readl(base + IDBL);
869 for (i = 0; readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE
870 && i < MU_MAX_DELAY_TIME; i++) {
871 rmb();
872 msleep(1);
873 }
874
875 if (i == MU_MAX_DELAY_TIME) {
876 printk(KERN_ERR DRV_NAME
877 "(%s): no handshake signature\n",
878 pci_name(hba->pdev));
879 return -1;
880 }
881 }
882
883 udelay(10);
884
885 h = (struct handshake_frame *)(hba->dma_mem + MU_REQ_BUFFER_SIZE);
886 h->rb_phy = cpu_to_le32(hba->dma_handle);
887 h->rb_phy_hi = cpu_to_le32((hba->dma_handle >> 16) >> 16);
888 h->req_sz = cpu_to_le16(sizeof(struct req_msg));
889 h->req_cnt = cpu_to_le16(MU_REQ_COUNT);
890 h->status_sz = cpu_to_le16(sizeof(struct status_msg));
891 h->status_cnt = cpu_to_le16(MU_STATUS_COUNT);
892 stex_gettime(&h->hosttime);
893 h->partner_type = HMU_PARTNER_TYPE;
894
895 status_phys = hba->dma_handle + MU_REQ_BUFFER_SIZE;
896 writel(status_phys, base + IMR0);
897 readl(base + IMR0);
898 writel((status_phys >> 16) >> 16, base + IMR1);
899 readl(base + IMR1);
900
901 writel((status_phys >> 16) >> 16, base + OMR0); /* old fw compatible */
902 readl(base + OMR0);
903 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
904 readl(base + IDBL); /* flush */
905
906 udelay(10);
907 for (i = 0; readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE
908 && i < MU_MAX_DELAY_TIME; i++) {
909 rmb();
910 msleep(1);
911 }
912
913 if (i == MU_MAX_DELAY_TIME) {
914 printk(KERN_ERR DRV_NAME
915 "(%s): no signature after handshake frame\n",
916 pci_name(hba->pdev));
917 return -1;
918 }
919
920 writel(0, base + IMR0);
921 readl(base + IMR0);
922 writel(0, base + OMR0);
923 readl(base + OMR0);
924 writel(0, base + IMR1);
925 readl(base + IMR1);
926 writel(0, base + OMR1);
927 readl(base + OMR1); /* flush */
928 hba->mu_status = MU_STATE_STARTED;
929 return 0;
930}
931
932static int stex_abort(struct scsi_cmnd *cmd)
933{
934 struct Scsi_Host *host = cmd->device->host;
935 struct st_hba *hba = (struct st_hba *)host->hostdata;
936 u16 tag;
937 void __iomem *base;
938 u32 data;
939 int result = SUCCESS;
940 unsigned long flags;
941 base = hba->mmio_base;
942 spin_lock_irqsave(host->host_lock, flags);
943
944 for (tag = 0; tag < MU_MAX_REQUEST; tag++)
945 if (hba->ccb[tag].cmd == cmd && (hba->tag & (1 << tag))) {
946 hba->wait_ccb = &(hba->ccb[tag]);
947 break;
948 }
949 if (tag >= MU_MAX_REQUEST)
950 goto out;
951
952 data = readl(base + ODBL);
953 if (data == 0 || data == 0xffffffff)
954 goto fail_out;
955
956 writel(data, base + ODBL);
957 readl(base + ODBL); /* flush */
958
959 stex_mu_intr(hba, data);
960
961 if (hba->wait_ccb == NULL) {
962 printk(KERN_WARNING DRV_NAME
963 "(%s): lost interrupt\n", pci_name(hba->pdev));
964 goto out;
965 }
966
967fail_out:
968 hba->wait_ccb->req = NULL; /* nullify the req's future return */
969 hba->wait_ccb = NULL;
970 result = FAILED;
971out:
972 spin_unlock_irqrestore(host->host_lock, flags);
973 return result;
974}
975
976static void stex_hard_reset(struct st_hba *hba)
977{
978 struct pci_bus *bus;
979 int i;
980 u16 pci_cmd;
981 u8 pci_bctl;
982
983 for (i = 0; i < 16; i++)
984 pci_read_config_dword(hba->pdev, i * 4,
985 &hba->pdev->saved_config_space[i]);
986
987 /* Reset secondary bus. Our controller(MU/ATU) is the only device on
988 secondary bus. Consult Intel 80331/3 developer's manual for detail */
989 bus = hba->pdev->bus;
990 pci_read_config_byte(bus->self, PCI_BRIDGE_CONTROL, &pci_bctl);
991 pci_bctl |= PCI_BRIDGE_CTL_BUS_RESET;
992 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
993 msleep(1);
994 pci_bctl &= ~PCI_BRIDGE_CTL_BUS_RESET;
995 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
996
997 for (i = 0; i < MU_MAX_DELAY_TIME; i++) {
998 pci_read_config_word(hba->pdev, PCI_COMMAND, &pci_cmd);
999 if (pci_cmd & PCI_COMMAND_MASTER)
1000 break;
1001 msleep(1);
1002 }
1003
1004 ssleep(5);
1005 for (i = 0; i < 16; i++)
1006 pci_write_config_dword(hba->pdev, i * 4,
1007 hba->pdev->saved_config_space[i]);
1008}
1009
1010static int stex_reset(struct scsi_cmnd *cmd)
1011{
1012 struct st_hba *hba;
1013 unsigned long flags;
1014 hba = (struct st_hba *) &cmd->device->host->hostdata[0];
1015
1016 hba->mu_status = MU_STATE_RESETTING;
1017
1018 if (hba->cardtype == st_shasta)
1019 stex_hard_reset(hba);
1020
1021 if (stex_handshake(hba)) {
1022 printk(KERN_WARNING DRV_NAME
1023 "(%s): resetting: handshake failed\n",
1024 pci_name(hba->pdev));
1025 return FAILED;
1026 }
1027 spin_lock_irqsave(hba->host->host_lock, flags);
1028 hba->tag = 0;
1029 hba->req_head = 0;
1030 hba->req_tail = 0;
1031 hba->status_head = 0;
1032 hba->status_tail = 0;
1033 hba->out_req_cnt = 0;
1034 spin_unlock_irqrestore(hba->host->host_lock, flags);
1035
1036 return SUCCESS;
1037}
1038
1039static int stex_biosparam(struct scsi_device *sdev,
1040 struct block_device *bdev, sector_t capacity, int geom[])
1041{
1042 int heads = 255, sectors = 63, cylinders;
1043
1044 if (capacity < 0x200000) {
1045 heads = 64;
1046 sectors = 32;
1047 }
1048
1049 cylinders = sector_div(capacity, heads * sectors);
1050
1051 geom[0] = heads;
1052 geom[1] = sectors;
1053 geom[2] = cylinders;
1054
1055 return 0;
1056}
1057
1058static struct scsi_host_template driver_template = {
1059 .module = THIS_MODULE,
1060 .name = DRV_NAME,
1061 .proc_name = DRV_NAME,
1062 .bios_param = stex_biosparam,
1063 .queuecommand = stex_queuecommand,
1064 .slave_configure = stex_slave_config,
1065 .slave_destroy = stex_slave_destroy,
1066 .eh_abort_handler = stex_abort,
1067 .eh_host_reset_handler = stex_reset,
1068 .can_queue = ST_CAN_QUEUE,
1069 .this_id = -1,
1070 .sg_tablesize = ST_MAX_SG,
1071 .cmd_per_lun = ST_CMD_PER_LUN,
1072};
1073
1074static int stex_set_dma_mask(struct pci_dev * pdev)
1075{
1076 int ret;
1077 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)
1078 && !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))
1079 return 0;
1080 ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1081 if (!ret)
1082 ret = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1083 return ret;
1084}
1085
1086static int __devinit
1087stex_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1088{
1089 struct st_hba *hba;
1090 struct Scsi_Host *host;
1091 int err;
1092
1093 err = pci_enable_device(pdev);
1094 if (err)
1095 return err;
1096
1097 pci_set_master(pdev);
1098
1099 host = scsi_host_alloc(&driver_template, sizeof(struct st_hba));
1100
1101 if (!host) {
1102 printk(KERN_ERR DRV_NAME "(%s): scsi_host_alloc failed\n",
1103 pci_name(pdev));
1104 err = -ENOMEM;
1105 goto out_disable;
1106 }
1107
1108 hba = (struct st_hba *)host->hostdata;
1109 memset(hba, 0, sizeof(struct st_hba));
1110
1111 err = pci_request_regions(pdev, DRV_NAME);
1112 if (err < 0) {
1113 printk(KERN_ERR DRV_NAME "(%s): request regions failed\n",
1114 pci_name(pdev));
1115 goto out_scsi_host_put;
1116 }
1117
1118 hba->mmio_base = ioremap(pci_resource_start(pdev, 0),
1119 pci_resource_len(pdev, 0));
1120 if ( !hba->mmio_base) {
1121 printk(KERN_ERR DRV_NAME "(%s): memory map failed\n",
1122 pci_name(pdev));
1123 err = -ENOMEM;
1124 goto out_release_regions;
1125 }
1126
1127 err = stex_set_dma_mask(pdev);
1128 if (err) {
1129 printk(KERN_ERR DRV_NAME "(%s): set dma mask failed\n",
1130 pci_name(pdev));
1131 goto out_iounmap;
1132 }
1133
1134 hba->dma_mem = dma_alloc_coherent(&pdev->dev,
1135 STEX_BUFFER_SIZE, &hba->dma_handle, GFP_KERNEL);
1136 if (!hba->dma_mem) {
1137 err = -ENOMEM;
1138 printk(KERN_ERR DRV_NAME "(%s): dma mem alloc failed\n",
1139 pci_name(pdev));
1140 goto out_iounmap;
1141 }
1142
1143 hba->status_buffer =
1144 (struct status_msg *)(hba->dma_mem + MU_REQ_BUFFER_SIZE);
1145 hba->copy_buffer = hba->dma_mem + MU_BUFFER_SIZE;
1146 hba->mu_status = MU_STATE_STARTING;
1147
1148 hba->cardtype = (unsigned int) id->driver_data;
1149
1150 /* firmware uses id/lun pair for a logical drive, but lun would be
1151 always 0 if CONFIG_SCSI_MULTI_LUN not configured, so we use
1152 channel to map lun here */
1153 host->max_channel = ST_MAX_LUN_PER_TARGET - 1;
1154 host->max_id = ST_MAX_TARGET_NUM;
1155 host->max_lun = 1;
1156 host->unique_id = host->host_no;
1157 host->max_cmd_len = STEX_CDB_LENGTH;
1158
1159 hba->host = host;
1160 hba->pdev = pdev;
1161 init_waitqueue_head(&hba->waitq);
1162
1163 err = request_irq(pdev->irq, stex_intr, IRQF_SHARED, DRV_NAME, hba);
1164 if (err) {
1165 printk(KERN_ERR DRV_NAME "(%s): request irq failed\n",
1166 pci_name(pdev));
1167 goto out_pci_free;
1168 }
1169
1170 err = stex_handshake(hba);
1171 if (err)
1172 goto out_free_irq;
1173
1174 pci_set_drvdata(pdev, hba);
1175
1176 err = scsi_add_host(host, &pdev->dev);
1177 if (err) {
1178 printk(KERN_ERR DRV_NAME "(%s): scsi_add_host failed\n",
1179 pci_name(pdev));
1180 goto out_free_irq;
1181 }
1182
1183 scsi_scan_host(host);
1184
1185 return 0;
1186
1187out_free_irq:
1188 free_irq(pdev->irq, hba);
1189out_pci_free:
1190 dma_free_coherent(&pdev->dev, STEX_BUFFER_SIZE,
1191 hba->dma_mem, hba->dma_handle);
1192out_iounmap:
1193 iounmap(hba->mmio_base);
1194out_release_regions:
1195 pci_release_regions(pdev);
1196out_scsi_host_put:
1197 scsi_host_put(host);
1198out_disable:
1199 pci_disable_device(pdev);
1200
1201 return err;
1202}
1203
1204static void stex_hba_stop(struct st_hba *hba)
1205{
1206 struct req_msg *req;
1207 unsigned long flags;
1208 unsigned long before;
1209 u16 tag;
1210
1211 before = jiffies;
1212 while ((tag = stex_alloc_tag(hba, (unsigned long *)&hba->tag))
1213 == TAG_BITMAP_LENGTH) {
1214 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ))
1215 return;
1216 msleep(10);
1217 }
1218
1219 spin_lock_irqsave(hba->host->host_lock, flags);
1220 req = stex_alloc_req(hba);
1221 memset(req->cdb, 0, STEX_CDB_LENGTH);
1222
1223 req->cdb[0] = CONTROLLER_CMD;
1224 req->cdb[1] = CTLR_POWER_STATE_CHANGE;
1225 req->cdb[2] = CTLR_POWER_SAVING;
1226
1227 hba->ccb[tag].cmd = NULL;
1228 hba->ccb[tag].sg_count = 0;
1229 hba->ccb[tag].sense_bufflen = 0;
1230 hba->ccb[tag].sense_buffer = NULL;
1231 hba->ccb[tag].req_type |= PASSTHRU_REQ_TYPE;
1232
1233 stex_send_cmd(hba, req, tag);
1234 spin_unlock_irqrestore(hba->host->host_lock, flags);
1235
1236 wait_event_timeout(hba->waitq,
1237 !(hba->ccb[tag].req_type), ST_INTERNAL_TIMEOUT * HZ);
1238 if (hba->ccb[tag].req_type & PASSTHRU_REQ_TYPE)
1239 return;
1240
1241 stex_free_tag(hba, (unsigned long *)&hba->tag, tag);
1242}
1243
1244static void stex_hba_free(struct st_hba *hba)
1245{
1246 free_irq(hba->pdev->irq, hba);
1247
1248 iounmap(hba->mmio_base);
1249
1250 pci_release_regions(hba->pdev);
1251
1252 dma_free_coherent(&hba->pdev->dev, STEX_BUFFER_SIZE,
1253 hba->dma_mem, hba->dma_handle);
1254}
1255
1256static void stex_remove(struct pci_dev *pdev)
1257{
1258 struct st_hba *hba = pci_get_drvdata(pdev);
1259
1260 scsi_remove_host(hba->host);
1261
1262 pci_set_drvdata(pdev, NULL);
1263
1264 stex_hba_stop(hba);
1265
1266 stex_hba_free(hba);
1267
1268 scsi_host_put(hba->host);
1269
1270 pci_disable_device(pdev);
1271}
1272
1273static void stex_shutdown(struct pci_dev *pdev)
1274{
1275 struct st_hba *hba = pci_get_drvdata(pdev);
1276
1277 stex_hba_stop(hba);
1278}
1279
1280static struct pci_device_id stex_pci_tbl[] = {
1281 { 0x105a, 0x8350, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta },
1282 { 0x105a, 0xc350, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta },
1283 { 0x105a, 0xf350, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta },
1284 { 0x105a, 0x4301, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta },
1285 { 0x105a, 0x4302, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta },
1286 { 0x105a, 0x8301, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta },
1287 { 0x105a, 0x8302, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta },
1288 { 0x1725, 0x7250, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_vsc },
1289 { } /* terminate list */
1290};
1291MODULE_DEVICE_TABLE(pci, stex_pci_tbl);
1292
1293static struct pci_driver stex_pci_driver = {
1294 .name = DRV_NAME,
1295 .id_table = stex_pci_tbl,
1296 .probe = stex_probe,
1297 .remove = __devexit_p(stex_remove),
1298 .shutdown = stex_shutdown,
1299};
1300
1301static int __init stex_init(void)
1302{
1303 printk(KERN_INFO DRV_NAME
1304 ": Promise SuperTrak EX Driver version: %s\n",
1305 ST_DRIVER_VERSION);
1306
1307 return pci_register_driver(&stex_pci_driver);
1308}
1309
1310static void __exit stex_exit(void)
1311{
1312 pci_unregister_driver(&stex_pci_driver);
1313}
1314
1315module_init(stex_init);
1316module_exit(stex_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-03 06:36:28 -0500