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ACPI: check a return value correctly in acpi_power_get_context()
[linux-2.6.22.y-op.git] / drivers / scsi / hptiop.c
blob7e40105dd2bda162a3e641e20f90f908d962c06a
1 /*
2 * HighPoint RR3xxx controller driver for Linux
3 * Copyright (C) 2006 HighPoint Technologies, Inc. All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; version 2 of the License.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * Please report bugs/comments/suggestions to linux@highpoint-tech.com
15 *
16 * For more information, visit http://www.highpoint-tech.com
17 */
18 #include <linux/module.h>
19 #include <linux/types.h>
20 #include <linux/string.h>
21 #include <linux/kernel.h>
22 #include <linux/pci.h>
23 #include <linux/interrupt.h>
24 #include <linux/errno.h>
25 #include <linux/delay.h>
26 #include <linux/timer.h>
27 #include <linux/spinlock.h>
28 #include <linux/hdreg.h>
29 #include <asm/uaccess.h>
30 #include <asm/io.h>
31 #include <asm/div64.h>
32 #include <scsi/scsi_cmnd.h>
33 #include <scsi/scsi_device.h>
34 #include <scsi/scsi.h>
35 #include <scsi/scsi_tcq.h>
36 #include <scsi/scsi_host.h>
37
38 #include "hptiop.h"
39
40 MODULE_AUTHOR("HighPoint Technologies, Inc.");
41 MODULE_DESCRIPTION("HighPoint RocketRAID 3xxx SATA Controller Driver");
42
43 static char driver_name[] = "hptiop";
44 static const char driver_name_long[] = "RocketRAID 3xxx SATA Controller driver";
45 static const char driver_ver[] = "v1.0 (060426)";
46
47 static void hptiop_host_request_callback(struct hptiop_hba *hba, u32 tag);
48 static void hptiop_iop_request_callback(struct hptiop_hba *hba, u32 tag);
49 static void hptiop_message_callback(struct hptiop_hba *hba, u32 msg);
50
51 static inline void hptiop_pci_posting_flush(struct hpt_iopmu __iomem *iop)
52 {
53 readl(&iop->outbound_intstatus);
54 }
55
56 static int iop_wait_ready(struct hpt_iopmu __iomem *iop, u32 millisec)
57 {
58 u32 req = 0;
59 int i;
60
61 for (i = 0; i < millisec; i++) {
62 req = readl(&iop->inbound_queue);
63 if (req != IOPMU_QUEUE_EMPTY)
64 break;
65 msleep(1);
66 }
67
68 if (req != IOPMU_QUEUE_EMPTY) {
69 writel(req, &iop->outbound_queue);
70 hptiop_pci_posting_flush(iop);
71 return 0;
72 }
73
74 return -1;
75 }
76
77 static void hptiop_request_callback(struct hptiop_hba *hba, u32 tag)
78 {
79 if ((tag & IOPMU_QUEUE_MASK_HOST_BITS) == IOPMU_QUEUE_ADDR_HOST_BIT)
80 return hptiop_host_request_callback(hba,
81 tag & ~IOPMU_QUEUE_ADDR_HOST_BIT);
82 else
83 return hptiop_iop_request_callback(hba, tag);
84 }
85
86 static inline void hptiop_drain_outbound_queue(struct hptiop_hba *hba)
87 {
88 u32 req;
89
90 while ((req = readl(&hba->iop->outbound_queue)) != IOPMU_QUEUE_EMPTY) {
91
92 if (req & IOPMU_QUEUE_MASK_HOST_BITS)
93 hptiop_request_callback(hba, req);
94 else {
95 struct hpt_iop_request_header __iomem * p;
96
97 p = (struct hpt_iop_request_header __iomem *)
98 ((char __iomem *)hba->iop + req);
99
100 if (readl(&p->flags) & IOP_REQUEST_FLAG_SYNC_REQUEST) {
101 if (readl(&p->context))
102 hptiop_request_callback(hba, req);
103 else
104 writel(1, &p->context);
105 }
106 else
107 hptiop_request_callback(hba, req);
108 }
109 }
110 }
111
112 static int __iop_intr(struct hptiop_hba *hba)
113 {
114 struct hpt_iopmu __iomem *iop = hba->iop;
115 u32 status;
116 int ret = 0;
117
118 status = readl(&iop->outbound_intstatus);
119
120 if (status & IOPMU_OUTBOUND_INT_MSG0) {
121 u32 msg = readl(&iop->outbound_msgaddr0);
122 dprintk("received outbound msg %x\n", msg);
123 writel(IOPMU_OUTBOUND_INT_MSG0, &iop->outbound_intstatus);
124 hptiop_message_callback(hba, msg);
125 ret = 1;
126 }
127
128 if (status & IOPMU_OUTBOUND_INT_POSTQUEUE) {
129 hptiop_drain_outbound_queue(hba);
130 ret = 1;
131 }
132
133 return ret;
134 }
135
136 static int iop_send_sync_request(struct hptiop_hba *hba,
137 void __iomem *_req, u32 millisec)
138 {
139 struct hpt_iop_request_header __iomem *req = _req;
140 u32 i;
141
142 writel(readl(&req->flags) | IOP_REQUEST_FLAG_SYNC_REQUEST,
143 &req->flags);
144
145 writel(0, &req->context);
146
147 writel((unsigned long)req - (unsigned long)hba->iop,
148 &hba->iop->inbound_queue);
149
150 hptiop_pci_posting_flush(hba->iop);
151
152 for (i = 0; i < millisec; i++) {
153 __iop_intr(hba);
154 if (readl(&req->context))
155 return 0;
156 msleep(1);
157 }
158
159 return -1;
160 }
161
162 static int iop_send_sync_msg(struct hptiop_hba *hba, u32 msg, u32 millisec)
163 {
164 u32 i;
165
166 hba->msg_done = 0;
167
168 writel(msg, &hba->iop->inbound_msgaddr0);
169
170 hptiop_pci_posting_flush(hba->iop);
171
172 for (i = 0; i < millisec; i++) {
173 spin_lock_irq(hba->host->host_lock);
174 __iop_intr(hba);
175 spin_unlock_irq(hba->host->host_lock);
176 if (hba->msg_done)
177 break;
178 msleep(1);
179 }
180
181 return hba->msg_done? 0 : -1;
182 }
183
184 static int iop_get_config(struct hptiop_hba *hba,
185 struct hpt_iop_request_get_config *config)
186 {
187 u32 req32;
188 struct hpt_iop_request_get_config __iomem *req;
189
190 req32 = readl(&hba->iop->inbound_queue);
191 if (req32 == IOPMU_QUEUE_EMPTY)
192 return -1;
193
194 req = (struct hpt_iop_request_get_config __iomem *)
195 ((unsigned long)hba->iop + req32);
196
197 writel(0, &req->header.flags);
198 writel(IOP_REQUEST_TYPE_GET_CONFIG, &req->header.type);
199 writel(sizeof(struct hpt_iop_request_get_config), &req->header.size);
200 writel(IOP_RESULT_PENDING, &req->header.result);
201
202 if (iop_send_sync_request(hba, req, 20000)) {
203 dprintk("Get config send cmd failed\n");
204 return -1;
205 }
206
207 memcpy_fromio(config, req, sizeof(*config));
208 writel(req32, &hba->iop->outbound_queue);
209 return 0;
210 }
211
212 static int iop_set_config(struct hptiop_hba *hba,
213 struct hpt_iop_request_set_config *config)
214 {
215 u32 req32;
216 struct hpt_iop_request_set_config __iomem *req;
217
218 req32 = readl(&hba->iop->inbound_queue);
219 if (req32 == IOPMU_QUEUE_EMPTY)
220 return -1;
221
222 req = (struct hpt_iop_request_set_config __iomem *)
223 ((unsigned long)hba->iop + req32);
224
225 memcpy_toio((u8 __iomem *)req + sizeof(struct hpt_iop_request_header),
226 (u8 *)config + sizeof(struct hpt_iop_request_header),
227 sizeof(struct hpt_iop_request_set_config) -
228 sizeof(struct hpt_iop_request_header));
229
230 writel(0, &req->header.flags);
231 writel(IOP_REQUEST_TYPE_SET_CONFIG, &req->header.type);
232 writel(sizeof(struct hpt_iop_request_set_config), &req->header.size);
233 writel(IOP_RESULT_PENDING, &req->header.result);
234
235 if (iop_send_sync_request(hba, req, 20000)) {
236 dprintk("Set config send cmd failed\n");
237 return -1;
238 }
239
240 writel(req32, &hba->iop->outbound_queue);
241 return 0;
242 }
243
244 static int hptiop_initialize_iop(struct hptiop_hba *hba)
245 {
246 struct hpt_iopmu __iomem *iop = hba->iop;
247
248 /* enable interrupts */
249 writel(~(IOPMU_OUTBOUND_INT_POSTQUEUE | IOPMU_OUTBOUND_INT_MSG0),
250 &iop->outbound_intmask);
251
252 hba->initialized = 1;
253
254 /* start background tasks */
255 if (iop_send_sync_msg(hba,
256 IOPMU_INBOUND_MSG0_START_BACKGROUND_TASK, 5000)) {
257 printk(KERN_ERR "scsi%d: fail to start background task\n",
258 hba->host->host_no);
259 return -1;
260 }
261 return 0;
262 }
263
264 static int hptiop_map_pci_bar(struct hptiop_hba *hba)
265 {
266 u32 mem_base_phy, length;
267 void __iomem *mem_base_virt;
268 struct pci_dev *pcidev = hba->pcidev;
269
270 if (!(pci_resource_flags(pcidev, 0) & IORESOURCE_MEM)) {
271 printk(KERN_ERR "scsi%d: pci resource invalid\n",
272 hba->host->host_no);
273 return -1;
274 }
275
276 mem_base_phy = pci_resource_start(pcidev, 0);
277 length = pci_resource_len(pcidev, 0);
278 mem_base_virt = ioremap(mem_base_phy, length);
279
280 if (!mem_base_virt) {
281 printk(KERN_ERR "scsi%d: Fail to ioremap memory space\n",
282 hba->host->host_no);
283 return -1;
284 }
285
286 hba->iop = mem_base_virt;
287 dprintk("hptiop_map_pci_bar: iop=%p\n", hba->iop);
288 return 0;
289 }
290
291 static void hptiop_message_callback(struct hptiop_hba *hba, u32 msg)
292 {
293 dprintk("iop message 0x%x\n", msg);
294
295 if (!hba->initialized)
296 return;
297
298 if (msg == IOPMU_INBOUND_MSG0_RESET) {
299 atomic_set(&hba->resetting, 0);
300 wake_up(&hba->reset_wq);
301 }
302 else if (msg <= IOPMU_INBOUND_MSG0_MAX)
303 hba->msg_done = 1;
304 }
305
306 static inline struct hptiop_request *get_req(struct hptiop_hba *hba)
307 {
308 struct hptiop_request *ret;
309
310 dprintk("get_req : req=%p\n", hba->req_list);
311
312 ret = hba->req_list;
313 if (ret)
314 hba->req_list = ret->next;
315
316 return ret;
317 }
318
319 static inline void free_req(struct hptiop_hba *hba, struct hptiop_request *req)
320 {
321 dprintk("free_req(%d, %p)\n", req->index, req);
322 req->next = hba->req_list;
323 hba->req_list = req;
324 }
325
326 static void hptiop_host_request_callback(struct hptiop_hba *hba, u32 tag)
327 {
328 struct hpt_iop_request_scsi_command *req;
329 struct scsi_cmnd *scp;
330
331 req = (struct hpt_iop_request_scsi_command *)hba->reqs[tag].req_virt;
332 dprintk("hptiop_host_request_callback: req=%p, type=%d, "
333 "result=%d, context=0x%x tag=%d\n",
334 req, req->header.type, req->header.result,
335 req->header.context, tag);
336
337 BUG_ON(!req->header.result);
338 BUG_ON(req->header.type != cpu_to_le32(IOP_REQUEST_TYPE_SCSI_COMMAND));
339
340 scp = hba->reqs[tag].scp;
341
342 if (HPT_SCP(scp)->mapped) {
343 if (scp->use_sg)
344 pci_unmap_sg(hba->pcidev,
345 (struct scatterlist *)scp->request_buffer,
346 scp->use_sg,
347 scp->sc_data_direction
348 );
349 else
350 pci_unmap_single(hba->pcidev,
351 HPT_SCP(scp)->dma_handle,
352 scp->request_bufflen,
353 scp->sc_data_direction
354 );
355 }
356
357 switch (le32_to_cpu(req->header.result)) {
358 case IOP_RESULT_SUCCESS:
359 scp->result = (DID_OK<<16);
360 break;
361 case IOP_RESULT_BAD_TARGET:
362 scp->result = (DID_BAD_TARGET<<16);
363 break;
364 case IOP_RESULT_BUSY:
365 scp->result = (DID_BUS_BUSY<<16);
366 break;
367 case IOP_RESULT_RESET:
368 scp->result = (DID_RESET<<16);
369 break;
370 case IOP_RESULT_FAIL:
371 scp->result = (DID_ERROR<<16);
372 break;
373 case IOP_RESULT_INVALID_REQUEST:
374 scp->result = (DID_ABORT<<16);
375 break;
376 case IOP_RESULT_MODE_SENSE_CHECK_CONDITION:
377 scp->result = SAM_STAT_CHECK_CONDITION;
378 memset(&scp->sense_buffer,
379 0, sizeof(scp->sense_buffer));
380 memcpy(&scp->sense_buffer, &req->sg_list,
381 min(sizeof(scp->sense_buffer),
382 le32_to_cpu(req->dataxfer_length)));
383 break;
384
385 default:
386 scp->result = ((DRIVER_INVALID|SUGGEST_ABORT)<<24) |
387 (DID_ABORT<<16);
388 break;
389 }
390
391 dprintk("scsi_done(%p)\n", scp);
392 scp->scsi_done(scp);
393 free_req(hba, &hba->reqs[tag]);
394 }
395
396 void hptiop_iop_request_callback(struct hptiop_hba *hba, u32 tag)
397 {
398 struct hpt_iop_request_header __iomem *req;
399 struct hpt_iop_request_ioctl_command __iomem *p;
400 struct hpt_ioctl_k *arg;
401
402 req = (struct hpt_iop_request_header __iomem *)
403 ((unsigned long)hba->iop + tag);
404 dprintk("hptiop_iop_request_callback: req=%p, type=%d, "
405 "result=%d, context=0x%x tag=%d\n",
406 req, readl(&req->type), readl(&req->result),
407 readl(&req->context), tag);
408
409 BUG_ON(!readl(&req->result));
410 BUG_ON(readl(&req->type) != IOP_REQUEST_TYPE_IOCTL_COMMAND);
411
412 p = (struct hpt_iop_request_ioctl_command __iomem *)req;
413 arg = (struct hpt_ioctl_k *)(unsigned long)
414 (readl(&req->context) |
415 ((u64)readl(&req->context_hi32)<<32));
416
417 if (readl(&req->result) == IOP_RESULT_SUCCESS) {
418 arg->result = HPT_IOCTL_RESULT_OK;
419
420 if (arg->outbuf_size)
421 memcpy_fromio(arg->outbuf,
422 &p->buf[(readl(&p->inbuf_size) + 3)& ~3],
423 arg->outbuf_size);
424
425 if (arg->bytes_returned)
426 *arg->bytes_returned = arg->outbuf_size;
427 }
428 else
429 arg->result = HPT_IOCTL_RESULT_FAILED;
430
431 arg->done(arg);
432 writel(tag, &hba->iop->outbound_queue);
433 }
434
435 static irqreturn_t hptiop_intr(int irq, void *dev_id)
436 {
437 struct hptiop_hba *hba = dev_id;
438 int handled;
439 unsigned long flags;
440
441 spin_lock_irqsave(hba->host->host_lock, flags);
442 handled = __iop_intr(hba);
443 spin_unlock_irqrestore(hba->host->host_lock, flags);
444
445 return handled;
446 }
447
448 static int hptiop_buildsgl(struct scsi_cmnd *scp, struct hpt_iopsg *psg)
449 {
450 struct Scsi_Host *host = scp->device->host;
451 struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
452 struct scatterlist *sglist = (struct scatterlist *)scp->request_buffer;
453
454 /*
455 * though we'll not get non-use_sg fields anymore,
456 * keep use_sg checking anyway
457 */
458 if (scp->use_sg) {
459 int idx;
460
461 HPT_SCP(scp)->sgcnt = pci_map_sg(hba->pcidev,
462 sglist, scp->use_sg,
463 scp->sc_data_direction);
464 HPT_SCP(scp)->mapped = 1;
465 BUG_ON(HPT_SCP(scp)->sgcnt > hba->max_sg_descriptors);
466
467 for (idx = 0; idx < HPT_SCP(scp)->sgcnt; idx++) {
468 psg[idx].pci_address =
469 cpu_to_le64(sg_dma_address(&sglist[idx]));
470 psg[idx].size = cpu_to_le32(sg_dma_len(&sglist[idx]));
471 psg[idx].eot = (idx == HPT_SCP(scp)->sgcnt - 1) ?
472 cpu_to_le32(1) : 0;
473 }
474
475 return HPT_SCP(scp)->sgcnt;
476 } else {
477 HPT_SCP(scp)->dma_handle = pci_map_single(
478 hba->pcidev,
479 scp->request_buffer,
480 scp->request_bufflen,
481 scp->sc_data_direction
482 );
483 HPT_SCP(scp)->mapped = 1;
484 psg->pci_address = cpu_to_le64(HPT_SCP(scp)->dma_handle);
485 psg->size = cpu_to_le32(scp->request_bufflen);
486 psg->eot = cpu_to_le32(1);
487 return 1;
488 }
489 }
490
491 static int hptiop_queuecommand(struct scsi_cmnd *scp,
492 void (*done)(struct scsi_cmnd *))
493 {
494 struct Scsi_Host *host = scp->device->host;
495 struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
496 struct hpt_iop_request_scsi_command *req;
497 int sg_count = 0;
498 struct hptiop_request *_req;
499
500 BUG_ON(!done);
501 scp->scsi_done = done;
502
503 _req = get_req(hba);
504 if (_req == NULL) {
505 dprintk("hptiop_queuecmd : no free req\n");
506 return SCSI_MLQUEUE_HOST_BUSY;
507 }
508
509 _req->scp = scp;
510
511 dprintk("hptiop_queuecmd(scp=%p) %d/%d/%d/%d cdb=(%x-%x-%x) "
512 "req_index=%d, req=%p\n",
513 scp,
514 host->host_no, scp->device->channel,
515 scp->device->id, scp->device->lun,
516 *((u32 *)&scp->cmnd),
517 *((u32 *)&scp->cmnd + 1),
518 *((u32 *)&scp->cmnd + 2),
519 _req->index, _req->req_virt);
520
521 scp->result = 0;
522
523 if (scp->device->channel || scp->device->lun ||
524 scp->device->id > hba->max_devices) {
525 scp->result = DID_BAD_TARGET << 16;
526 free_req(hba, _req);
527 goto cmd_done;
528 }
529
530 req = (struct hpt_iop_request_scsi_command *)_req->req_virt;
531
532 /* build S/G table */
533 if (scp->request_bufflen)
534 sg_count = hptiop_buildsgl(scp, req->sg_list);
535 else
536 HPT_SCP(scp)->mapped = 0;
537
538 req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
539 req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_SCSI_COMMAND);
540 req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
541 req->header.context = cpu_to_le32(IOPMU_QUEUE_ADDR_HOST_BIT |
542 (u32)_req->index);
543 req->header.context_hi32 = 0;
544 req->dataxfer_length = cpu_to_le32(scp->request_bufflen);
545 req->channel = scp->device->channel;
546 req->target = scp->device->id;
547 req->lun = scp->device->lun;
548 req->header.size = cpu_to_le32(
549 sizeof(struct hpt_iop_request_scsi_command)
550 - sizeof(struct hpt_iopsg)
551 + sg_count * sizeof(struct hpt_iopsg));
552
553 memcpy(req->cdb, scp->cmnd, sizeof(req->cdb));
554
555 writel(IOPMU_QUEUE_ADDR_HOST_BIT | _req->req_shifted_phy,
556 &hba->iop->inbound_queue);
557
558 return 0;
559
560 cmd_done:
561 dprintk("scsi_done(scp=%p)\n", scp);
562 scp->scsi_done(scp);
563 return 0;
564 }
565
566 static const char *hptiop_info(struct Scsi_Host *host)
567 {
568 return driver_name_long;
569 }
570
571 static int hptiop_reset_hba(struct hptiop_hba *hba)
572 {
573 if (atomic_xchg(&hba->resetting, 1) == 0) {
574 atomic_inc(&hba->reset_count);
575 writel(IOPMU_INBOUND_MSG0_RESET,
576 &hba->iop->inbound_msgaddr0);
577 hptiop_pci_posting_flush(hba->iop);
578 }
579
580 wait_event_timeout(hba->reset_wq,
581 atomic_read(&hba->resetting) == 0, 60 * HZ);
582
583 if (atomic_read(&hba->resetting)) {
584 /* IOP is in unkown state, abort reset */
585 printk(KERN_ERR "scsi%d: reset failed\n", hba->host->host_no);
586 return -1;
587 }
588
589 if (iop_send_sync_msg(hba,
590 IOPMU_INBOUND_MSG0_START_BACKGROUND_TASK, 5000)) {
591 dprintk("scsi%d: fail to start background task\n",
592 hba->host->host_no);
593 }
594
595 return 0;
596 }
597
598 static int hptiop_reset(struct scsi_cmnd *scp)
599 {
600 struct Scsi_Host * host = scp->device->host;
601 struct hptiop_hba * hba = (struct hptiop_hba *)host->hostdata;
602
603 printk(KERN_WARNING "hptiop_reset(%d/%d/%d) scp=%p\n",
604 scp->device->host->host_no, scp->device->channel,
605 scp->device->id, scp);
606
607 return hptiop_reset_hba(hba)? FAILED : SUCCESS;
608 }
609
610 static int hptiop_adjust_disk_queue_depth(struct scsi_device *sdev,
611 int queue_depth)
612 {
613 if(queue_depth > 256)
614 queue_depth = 256;
615 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
616 return queue_depth;
617 }
618
619 static ssize_t hptiop_show_version(struct class_device *class_dev, char *buf)
620 {
621 return snprintf(buf, PAGE_SIZE, "%s\n", driver_ver);
622 }
623
624 static ssize_t hptiop_show_fw_version(struct class_device *class_dev, char *buf)
625 {
626 struct Scsi_Host *host = class_to_shost(class_dev);
627 struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
628
629 return snprintf(buf, PAGE_SIZE, "%d.%d.%d.%d\n",
630 hba->firmware_version >> 24,
631 (hba->firmware_version >> 16) & 0xff,
632 (hba->firmware_version >> 8) & 0xff,
633 hba->firmware_version & 0xff);
634 }
635
636 static struct class_device_attribute hptiop_attr_version = {
637 .attr = {
638 .name = "driver-version",
639 .mode = S_IRUGO,
640 },
641 .show = hptiop_show_version,
642 };
643
644 static struct class_device_attribute hptiop_attr_fw_version = {
645 .attr = {
646 .name = "firmware-version",
647 .mode = S_IRUGO,
648 },
649 .show = hptiop_show_fw_version,
650 };
651
652 static struct class_device_attribute *hptiop_attrs[] = {
653 &hptiop_attr_version,
654 &hptiop_attr_fw_version,
655 NULL
656 };
657
658 static struct scsi_host_template driver_template = {
659 .module = THIS_MODULE,
660 .name = driver_name,
661 .queuecommand = hptiop_queuecommand,
662 .eh_device_reset_handler = hptiop_reset,
663 .eh_bus_reset_handler = hptiop_reset,
664 .info = hptiop_info,
665 .unchecked_isa_dma = 0,
666 .emulated = 0,
667 .use_clustering = ENABLE_CLUSTERING,
668 .proc_name = driver_name,
669 .shost_attrs = hptiop_attrs,
670 .this_id = -1,
671 .change_queue_depth = hptiop_adjust_disk_queue_depth,
672 };
673
674 static int __devinit hptiop_probe(struct pci_dev *pcidev,
675 const struct pci_device_id *id)
676 {
677 struct Scsi_Host *host = NULL;
678 struct hptiop_hba *hba;
679 struct hpt_iop_request_get_config iop_config;
680 struct hpt_iop_request_set_config set_config;
681 dma_addr_t start_phy;
682 void *start_virt;
683 u32 offset, i, req_size;
684
685 dprintk("hptiop_probe(%p)\n", pcidev);
686
687 if (pci_enable_device(pcidev)) {
688 printk(KERN_ERR "hptiop: fail to enable pci device\n");
689 return -ENODEV;
690 }
691
692 printk(KERN_INFO "adapter at PCI %d:%d:%d, IRQ %d\n",
693 pcidev->bus->number, pcidev->devfn >> 3, pcidev->devfn & 7,
694 pcidev->irq);
695
696 pci_set_master(pcidev);
697
698 /* Enable 64bit DMA if possible */
699 if (pci_set_dma_mask(pcidev, DMA_64BIT_MASK)) {
700 if (pci_set_dma_mask(pcidev, DMA_32BIT_MASK)) {
701 printk(KERN_ERR "hptiop: fail to set dma_mask\n");
702 goto disable_pci_device;
703 }
704 }
705
706 if (pci_request_regions(pcidev, driver_name)) {
707 printk(KERN_ERR "hptiop: pci_request_regions failed\n");
708 goto disable_pci_device;
709 }
710
711 host = scsi_host_alloc(&driver_template, sizeof(struct hptiop_hba));
712 if (!host) {
713 printk(KERN_ERR "hptiop: fail to alloc scsi host\n");
714 goto free_pci_regions;
715 }
716
717 hba = (struct hptiop_hba *)host->hostdata;
718
719 hba->pcidev = pcidev;
720 hba->host = host;
721 hba->initialized = 0;
722
723 atomic_set(&hba->resetting, 0);
724 atomic_set(&hba->reset_count, 0);
725
726 init_waitqueue_head(&hba->reset_wq);
727 init_waitqueue_head(&hba->ioctl_wq);
728
729 host->max_lun = 1;
730 host->max_channel = 0;
731 host->io_port = 0;
732 host->n_io_port = 0;
733 host->irq = pcidev->irq;
734
735 if (hptiop_map_pci_bar(hba))
736 goto free_scsi_host;
737
738 if (iop_wait_ready(hba->iop, 20000)) {
739 printk(KERN_ERR "scsi%d: firmware not ready\n",
740 hba->host->host_no);
741 goto unmap_pci_bar;
742 }
743
744 if (iop_get_config(hba, &iop_config)) {
745 printk(KERN_ERR "scsi%d: get config failed\n",
746 hba->host->host_no);
747 goto unmap_pci_bar;
748 }
749
750 hba->max_requests = min(le32_to_cpu(iop_config.max_requests),
751 HPTIOP_MAX_REQUESTS);
752 hba->max_devices = le32_to_cpu(iop_config.max_devices);
753 hba->max_request_size = le32_to_cpu(iop_config.request_size);
754 hba->max_sg_descriptors = le32_to_cpu(iop_config.max_sg_count);
755 hba->firmware_version = le32_to_cpu(iop_config.firmware_version);
756 hba->sdram_size = le32_to_cpu(iop_config.sdram_size);
757
758 host->max_sectors = le32_to_cpu(iop_config.data_transfer_length) >> 9;
759 host->max_id = le32_to_cpu(iop_config.max_devices);
760 host->sg_tablesize = le32_to_cpu(iop_config.max_sg_count);
761 host->can_queue = le32_to_cpu(iop_config.max_requests);
762 host->cmd_per_lun = le32_to_cpu(iop_config.max_requests);
763 host->max_cmd_len = 16;
764
765 set_config.vbus_id = cpu_to_le32(host->host_no);
766 set_config.iop_id = cpu_to_le32(host->host_no);
767
768 if (iop_set_config(hba, &set_config)) {
769 printk(KERN_ERR "scsi%d: set config failed\n",
770 hba->host->host_no);
771 goto unmap_pci_bar;
772 }
773
774 pci_set_drvdata(pcidev, host);
775
776 if (request_irq(pcidev->irq, hptiop_intr, IRQF_SHARED,
777 driver_name, hba)) {
778 printk(KERN_ERR "scsi%d: request irq %d failed\n",
779 hba->host->host_no, pcidev->irq);
780 goto unmap_pci_bar;
781 }
782
783 /* Allocate request mem */
784 req_size = sizeof(struct hpt_iop_request_scsi_command)
785 + sizeof(struct hpt_iopsg) * (hba->max_sg_descriptors - 1);
786 if ((req_size& 0x1f) != 0)
787 req_size = (req_size + 0x1f) & ~0x1f;
788
789 dprintk("req_size=%d, max_requests=%d\n", req_size, hba->max_requests);
790
791 hba->req_size = req_size;
792 start_virt = dma_alloc_coherent(&pcidev->dev,
793 hba->req_size*hba->max_requests + 0x20,
794 &start_phy, GFP_KERNEL);
795
796 if (!start_virt) {
797 printk(KERN_ERR "scsi%d: fail to alloc request mem\n",
798 hba->host->host_no);
799 goto free_request_irq;
800 }
801
802 hba->dma_coherent = start_virt;
803 hba->dma_coherent_handle = start_phy;
804
805 if ((start_phy & 0x1f) != 0)
806 {
807 offset = ((start_phy + 0x1f) & ~0x1f) - start_phy;
808 start_phy += offset;
809 start_virt += offset;
810 }
811
812 hba->req_list = start_virt;
813 for (i = 0; i < hba->max_requests; i++) {
814 hba->reqs[i].next = NULL;
815 hba->reqs[i].req_virt = start_virt;
816 hba->reqs[i].req_shifted_phy = start_phy >> 5;
817 hba->reqs[i].index = i;
818 free_req(hba, &hba->reqs[i]);
819 start_virt = (char *)start_virt + hba->req_size;
820 start_phy = start_phy + hba->req_size;
821 }
822
823 /* Enable Interrupt and start background task */
824 if (hptiop_initialize_iop(hba))
825 goto free_request_mem;
826
827 if (scsi_add_host(host, &pcidev->dev)) {
828 printk(KERN_ERR "scsi%d: scsi_add_host failed\n",
829 hba->host->host_no);
830 goto free_request_mem;
831 }
832
833
834 scsi_scan_host(host);
835
836 dprintk("scsi%d: hptiop_probe successfully\n", hba->host->host_no);
837 return 0;
838
839 free_request_mem:
840 dma_free_coherent(&hba->pcidev->dev,
841 hba->req_size*hba->max_requests + 0x20,
842 hba->dma_coherent, hba->dma_coherent_handle);
843
844 free_request_irq:
845 free_irq(hba->pcidev->irq, hba);
846
847 unmap_pci_bar:
848 iounmap(hba->iop);
849
850 free_pci_regions:
851 pci_release_regions(pcidev) ;
852
853 free_scsi_host:
854 scsi_host_put(host);
855
856 disable_pci_device:
857 pci_disable_device(pcidev);
858
859 dprintk("scsi%d: hptiop_probe fail\n", host->host_no);
860 return -ENODEV;
861 }
862
863 static void hptiop_shutdown(struct pci_dev *pcidev)
864 {
865 struct Scsi_Host *host = pci_get_drvdata(pcidev);
866 struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
867 struct hpt_iopmu __iomem *iop = hba->iop;
868 u32 int_mask;
869
870 dprintk("hptiop_shutdown(%p)\n", hba);
871
872 /* stop the iop */
873 if (iop_send_sync_msg(hba, IOPMU_INBOUND_MSG0_SHUTDOWN, 60000))
874 printk(KERN_ERR "scsi%d: shutdown the iop timeout\n",
875 hba->host->host_no);
876
877 /* disable all outbound interrupts */
878 int_mask = readl(&iop->outbound_intmask);
879 writel(int_mask |
880 IOPMU_OUTBOUND_INT_MSG0 | IOPMU_OUTBOUND_INT_POSTQUEUE,
881 &iop->outbound_intmask);
882 hptiop_pci_posting_flush(iop);
883 }
884
885 static void hptiop_remove(struct pci_dev *pcidev)
886 {
887 struct Scsi_Host *host = pci_get_drvdata(pcidev);
888 struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
889
890 dprintk("scsi%d: hptiop_remove\n", hba->host->host_no);
891
892 scsi_remove_host(host);
893
894 hptiop_shutdown(pcidev);
895
896 free_irq(hba->pcidev->irq, hba);
897
898 dma_free_coherent(&hba->pcidev->dev,
899 hba->req_size * hba->max_requests + 0x20,
900 hba->dma_coherent,
901 hba->dma_coherent_handle);
902
903 iounmap(hba->iop);
904
905 pci_release_regions(hba->pcidev);
906 pci_set_drvdata(hba->pcidev, NULL);
907 pci_disable_device(hba->pcidev);
908
909 scsi_host_put(host);
910 }
911
912 static struct pci_device_id hptiop_id_table[] = {
913 { PCI_DEVICE(0x1103, 0x3220) },
914 { PCI_DEVICE(0x1103, 0x3320) },
915 {},
916 };
917
918 MODULE_DEVICE_TABLE(pci, hptiop_id_table);
919
920 static struct pci_driver hptiop_pci_driver = {
921 .name = driver_name,
922 .id_table = hptiop_id_table,
923 .probe = hptiop_probe,
924 .remove = hptiop_remove,
925 .shutdown = hptiop_shutdown,
926 };
927
928 static int __init hptiop_module_init(void)
929 {
930 printk(KERN_INFO "%s %s\n", driver_name_long, driver_ver);
931 return pci_register_driver(&hptiop_pci_driver);
932 }
933
934 static void __exit hptiop_module_exit(void)
935 {
936 pci_unregister_driver(&hptiop_pci_driver);
937 }
938
939
940 module_init(hptiop_module_init);
941 module_exit(hptiop_module_exit);
942
943 MODULE_LICENSE("GPL");
linux v2.6.22.y-op