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[MIPS] RTLX: Protect rtlx_{read,write} with mutex.
[linux-2.6/linux-mips/linux-dm7025.git] / drivers / scsi / hptiop.c
blobbec83cbee59a6abe9cb36ca4d15bb0d384fb5f7b
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,
381 &req->sg_list, le32_to_cpu(req->dataxfer_length));
382 break;
383
384 default:
385 scp->result = ((DRIVER_INVALID|SUGGEST_ABORT)<<24) |
386 (DID_ABORT<<16);
387 break;
388 }
389
390 dprintk("scsi_done(%p)\n", scp);
391 scp->scsi_done(scp);
392 free_req(hba, &hba->reqs[tag]);
393 }
394
395 void hptiop_iop_request_callback(struct hptiop_hba *hba, u32 tag)
396 {
397 struct hpt_iop_request_header __iomem *req;
398 struct hpt_iop_request_ioctl_command __iomem *p;
399 struct hpt_ioctl_k *arg;
400
401 req = (struct hpt_iop_request_header __iomem *)
402 ((unsigned long)hba->iop + tag);
403 dprintk("hptiop_iop_request_callback: req=%p, type=%d, "
404 "result=%d, context=0x%x tag=%d\n",
405 req, readl(&req->type), readl(&req->result),
406 readl(&req->context), tag);
407
408 BUG_ON(!readl(&req->result));
409 BUG_ON(readl(&req->type) != IOP_REQUEST_TYPE_IOCTL_COMMAND);
410
411 p = (struct hpt_iop_request_ioctl_command __iomem *)req;
412 arg = (struct hpt_ioctl_k *)(unsigned long)
413 (readl(&req->context) |
414 ((u64)readl(&req->context_hi32)<<32));
415
416 if (readl(&req->result) == IOP_RESULT_SUCCESS) {
417 arg->result = HPT_IOCTL_RESULT_OK;
418
419 if (arg->outbuf_size)
420 memcpy_fromio(arg->outbuf,
421 &p->buf[(readl(&p->inbuf_size) + 3)& ~3],
422 arg->outbuf_size);
423
424 if (arg->bytes_returned)
425 *arg->bytes_returned = arg->outbuf_size;
426 }
427 else
428 arg->result = HPT_IOCTL_RESULT_FAILED;
429
430 arg->done(arg);
431 writel(tag, &hba->iop->outbound_queue);
432 }
433
434 static irqreturn_t hptiop_intr(int irq, void *dev_id)
435 {
436 struct hptiop_hba *hba = dev_id;
437 int handled;
438 unsigned long flags;
439
440 spin_lock_irqsave(hba->host->host_lock, flags);
441 handled = __iop_intr(hba);
442 spin_unlock_irqrestore(hba->host->host_lock, flags);
443
444 return handled;
445 }
446
447 static int hptiop_buildsgl(struct scsi_cmnd *scp, struct hpt_iopsg *psg)
448 {
449 struct Scsi_Host *host = scp->device->host;
450 struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
451 struct scatterlist *sglist = (struct scatterlist *)scp->request_buffer;
452
453 /*
454 * though we'll not get non-use_sg fields anymore,
455 * keep use_sg checking anyway
456 */
457 if (scp->use_sg) {
458 int idx;
459
460 HPT_SCP(scp)->sgcnt = pci_map_sg(hba->pcidev,
461 sglist, scp->use_sg,
462 scp->sc_data_direction);
463 HPT_SCP(scp)->mapped = 1;
464 BUG_ON(HPT_SCP(scp)->sgcnt > hba->max_sg_descriptors);
465
466 for (idx = 0; idx < HPT_SCP(scp)->sgcnt; idx++) {
467 psg[idx].pci_address =
468 cpu_to_le64(sg_dma_address(&sglist[idx]));
469 psg[idx].size = cpu_to_le32(sg_dma_len(&sglist[idx]));
470 psg[idx].eot = (idx == HPT_SCP(scp)->sgcnt - 1) ?
471 cpu_to_le32(1) : 0;
472 }
473
474 return HPT_SCP(scp)->sgcnt;
475 } else {
476 HPT_SCP(scp)->dma_handle = pci_map_single(
477 hba->pcidev,
478 scp->request_buffer,
479 scp->request_bufflen,
480 scp->sc_data_direction
481 );
482 HPT_SCP(scp)->mapped = 1;
483 psg->pci_address = cpu_to_le64(HPT_SCP(scp)->dma_handle);
484 psg->size = cpu_to_le32(scp->request_bufflen);
485 psg->eot = cpu_to_le32(1);
486 return 1;
487 }
488 }
489
490 static int hptiop_queuecommand(struct scsi_cmnd *scp,
491 void (*done)(struct scsi_cmnd *))
492 {
493 struct Scsi_Host *host = scp->device->host;
494 struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
495 struct hpt_iop_request_scsi_command *req;
496 int sg_count = 0;
497 struct hptiop_request *_req;
498
499 BUG_ON(!done);
500 scp->scsi_done = done;
501
502 _req = get_req(hba);
503 if (_req == NULL) {
504 dprintk("hptiop_queuecmd : no free req\n");
505 return SCSI_MLQUEUE_HOST_BUSY;
506 }
507
508 _req->scp = scp;
509
510 dprintk("hptiop_queuecmd(scp=%p) %d/%d/%d/%d cdb=(%x-%x-%x) "
511 "req_index=%d, req=%p\n",
512 scp,
513 host->host_no, scp->device->channel,
514 scp->device->id, scp->device->lun,
515 *((u32 *)&scp->cmnd),
516 *((u32 *)&scp->cmnd + 1),
517 *((u32 *)&scp->cmnd + 2),
518 _req->index, _req->req_virt);
519
520 scp->result = 0;
521
522 if (scp->device->channel || scp->device->lun ||
523 scp->device->id > hba->max_devices) {
524 scp->result = DID_BAD_TARGET << 16;
525 free_req(hba, _req);
526 goto cmd_done;
527 }
528
529 req = (struct hpt_iop_request_scsi_command *)_req->req_virt;
530
531 /* build S/G table */
532 if (scp->request_bufflen)
533 sg_count = hptiop_buildsgl(scp, req->sg_list);
534 else
535 HPT_SCP(scp)->mapped = 0;
536
537 req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
538 req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_SCSI_COMMAND);
539 req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
540 req->header.context = cpu_to_le32(IOPMU_QUEUE_ADDR_HOST_BIT |
541 (u32)_req->index);
542 req->header.context_hi32 = 0;
543 req->dataxfer_length = cpu_to_le32(scp->request_bufflen);
544 req->channel = scp->device->channel;
545 req->target = scp->device->id;
546 req->lun = scp->device->lun;
547 req->header.size = cpu_to_le32(
548 sizeof(struct hpt_iop_request_scsi_command)
549 - sizeof(struct hpt_iopsg)
550 + sg_count * sizeof(struct hpt_iopsg));
551
552 memcpy(req->cdb, scp->cmnd, sizeof(req->cdb));
553
554 writel(IOPMU_QUEUE_ADDR_HOST_BIT | _req->req_shifted_phy,
555 &hba->iop->inbound_queue);
556
557 return 0;
558
559 cmd_done:
560 dprintk("scsi_done(scp=%p)\n", scp);
561 scp->scsi_done(scp);
562 return 0;
563 }
564
565 static const char *hptiop_info(struct Scsi_Host *host)
566 {
567 return driver_name_long;
568 }
569
570 static int hptiop_reset_hba(struct hptiop_hba *hba)
571 {
572 if (atomic_xchg(&hba->resetting, 1) == 0) {
573 atomic_inc(&hba->reset_count);
574 writel(IOPMU_INBOUND_MSG0_RESET,
575 &hba->iop->inbound_msgaddr0);
576 hptiop_pci_posting_flush(hba->iop);
577 }
578
579 wait_event_timeout(hba->reset_wq,
580 atomic_read(&hba->resetting) == 0, 60 * HZ);
581
582 if (atomic_read(&hba->resetting)) {
583 /* IOP is in unkown state, abort reset */
584 printk(KERN_ERR "scsi%d: reset failed\n", hba->host->host_no);
585 return -1;
586 }
587
588 if (iop_send_sync_msg(hba,
589 IOPMU_INBOUND_MSG0_START_BACKGROUND_TASK, 5000)) {
590 dprintk("scsi%d: fail to start background task\n",
591 hba->host->host_no);
592 }
593
594 return 0;
595 }
596
597 static int hptiop_reset(struct scsi_cmnd *scp)
598 {
599 struct Scsi_Host * host = scp->device->host;
600 struct hptiop_hba * hba = (struct hptiop_hba *)host->hostdata;
601
602 printk(KERN_WARNING "hptiop_reset(%d/%d/%d) scp=%p\n",
603 scp->device->host->host_no, scp->device->channel,
604 scp->device->id, scp);
605
606 return hptiop_reset_hba(hba)? FAILED : SUCCESS;
607 }
608
609 static int hptiop_adjust_disk_queue_depth(struct scsi_device *sdev,
610 int queue_depth)
611 {
612 if(queue_depth > 256)
613 queue_depth = 256;
614 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
615 return queue_depth;
616 }
617
618 static ssize_t hptiop_show_version(struct class_device *class_dev, char *buf)
619 {
620 return snprintf(buf, PAGE_SIZE, "%s\n", driver_ver);
621 }
622
623 static ssize_t hptiop_show_fw_version(struct class_device *class_dev, char *buf)
624 {
625 struct Scsi_Host *host = class_to_shost(class_dev);
626 struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
627
628 return snprintf(buf, PAGE_SIZE, "%d.%d.%d.%d\n",
629 hba->firmware_version >> 24,
630 (hba->firmware_version >> 16) & 0xff,
631 (hba->firmware_version >> 8) & 0xff,
632 hba->firmware_version & 0xff);
633 }
634
635 static struct class_device_attribute hptiop_attr_version = {
636 .attr = {
637 .name = "driver-version",
638 .mode = S_IRUGO,
639 },
640 .show = hptiop_show_version,
641 };
642
643 static struct class_device_attribute hptiop_attr_fw_version = {
644 .attr = {
645 .name = "firmware-version",
646 .mode = S_IRUGO,
647 },
648 .show = hptiop_show_fw_version,
649 };
650
651 static struct class_device_attribute *hptiop_attrs[] = {
652 &hptiop_attr_version,
653 &hptiop_attr_fw_version,
654 NULL
655 };
656
657 static struct scsi_host_template driver_template = {
658 .module = THIS_MODULE,
659 .name = driver_name,
660 .queuecommand = hptiop_queuecommand,
661 .eh_device_reset_handler = hptiop_reset,
662 .eh_bus_reset_handler = hptiop_reset,
663 .info = hptiop_info,
664 .unchecked_isa_dma = 0,
665 .emulated = 0,
666 .use_clustering = ENABLE_CLUSTERING,
667 .proc_name = driver_name,
668 .shost_attrs = hptiop_attrs,
669 .this_id = -1,
670 .change_queue_depth = hptiop_adjust_disk_queue_depth,
671 };
672
673 static int __devinit hptiop_probe(struct pci_dev *pcidev,
674 const struct pci_device_id *id)
675 {
676 struct Scsi_Host *host = NULL;
677 struct hptiop_hba *hba;
678 struct hpt_iop_request_get_config iop_config;
679 struct hpt_iop_request_set_config set_config;
680 dma_addr_t start_phy;
681 void *start_virt;
682 u32 offset, i, req_size;
683
684 dprintk("hptiop_probe(%p)\n", pcidev);
685
686 if (pci_enable_device(pcidev)) {
687 printk(KERN_ERR "hptiop: fail to enable pci device\n");
688 return -ENODEV;
689 }
690
691 printk(KERN_INFO "adapter at PCI %d:%d:%d, IRQ %d\n",
692 pcidev->bus->number, pcidev->devfn >> 3, pcidev->devfn & 7,
693 pcidev->irq);
694
695 pci_set_master(pcidev);
696
697 /* Enable 64bit DMA if possible */
698 if (pci_set_dma_mask(pcidev, DMA_64BIT_MASK)) {
699 if (pci_set_dma_mask(pcidev, DMA_32BIT_MASK)) {
700 printk(KERN_ERR "hptiop: fail to set dma_mask\n");
701 goto disable_pci_device;
702 }
703 }
704
705 if (pci_request_regions(pcidev, driver_name)) {
706 printk(KERN_ERR "hptiop: pci_request_regions failed\n");
707 goto disable_pci_device;
708 }
709
710 host = scsi_host_alloc(&driver_template, sizeof(struct hptiop_hba));
711 if (!host) {
712 printk(KERN_ERR "hptiop: fail to alloc scsi host\n");
713 goto free_pci_regions;
714 }
715
716 hba = (struct hptiop_hba *)host->hostdata;
717
718 hba->pcidev = pcidev;
719 hba->host = host;
720 hba->initialized = 0;
721
722 atomic_set(&hba->resetting, 0);
723 atomic_set(&hba->reset_count, 0);
724
725 init_waitqueue_head(&hba->reset_wq);
726 init_waitqueue_head(&hba->ioctl_wq);
727
728 host->max_lun = 1;
729 host->max_channel = 0;
730 host->io_port = 0;
731 host->n_io_port = 0;
732 host->irq = pcidev->irq;
733
734 if (hptiop_map_pci_bar(hba))
735 goto free_scsi_host;
736
737 if (iop_wait_ready(hba->iop, 20000)) {
738 printk(KERN_ERR "scsi%d: firmware not ready\n",
739 hba->host->host_no);
740 goto unmap_pci_bar;
741 }
742
743 if (iop_get_config(hba, &iop_config)) {
744 printk(KERN_ERR "scsi%d: get config failed\n",
745 hba->host->host_no);
746 goto unmap_pci_bar;
747 }
748
749 hba->max_requests = min(le32_to_cpu(iop_config.max_requests),
750 HPTIOP_MAX_REQUESTS);
751 hba->max_devices = le32_to_cpu(iop_config.max_devices);
752 hba->max_request_size = le32_to_cpu(iop_config.request_size);
753 hba->max_sg_descriptors = le32_to_cpu(iop_config.max_sg_count);
754 hba->firmware_version = le32_to_cpu(iop_config.firmware_version);
755 hba->sdram_size = le32_to_cpu(iop_config.sdram_size);
756
757 host->max_sectors = le32_to_cpu(iop_config.data_transfer_length) >> 9;
758 host->max_id = le32_to_cpu(iop_config.max_devices);
759 host->sg_tablesize = le32_to_cpu(iop_config.max_sg_count);
760 host->can_queue = le32_to_cpu(iop_config.max_requests);
761 host->cmd_per_lun = le32_to_cpu(iop_config.max_requests);
762 host->max_cmd_len = 16;
763
764 set_config.vbus_id = cpu_to_le32(host->host_no);
765 set_config.iop_id = cpu_to_le32(host->host_no);
766
767 if (iop_set_config(hba, &set_config)) {
768 printk(KERN_ERR "scsi%d: set config failed\n",
769 hba->host->host_no);
770 goto unmap_pci_bar;
771 }
772
773 pci_set_drvdata(pcidev, host);
774
775 if (request_irq(pcidev->irq, hptiop_intr, IRQF_SHARED,
776 driver_name, hba)) {
777 printk(KERN_ERR "scsi%d: request irq %d failed\n",
778 hba->host->host_no, pcidev->irq);
779 goto unmap_pci_bar;
780 }
781
782 /* Allocate request mem */
783 req_size = sizeof(struct hpt_iop_request_scsi_command)
784 + sizeof(struct hpt_iopsg) * (hba->max_sg_descriptors - 1);
785 if ((req_size& 0x1f) != 0)
786 req_size = (req_size + 0x1f) & ~0x1f;
787
788 dprintk("req_size=%d, max_requests=%d\n", req_size, hba->max_requests);
789
790 hba->req_size = req_size;
791 start_virt = dma_alloc_coherent(&pcidev->dev,
792 hba->req_size*hba->max_requests + 0x20,
793 &start_phy, GFP_KERNEL);
794
795 if (!start_virt) {
796 printk(KERN_ERR "scsi%d: fail to alloc request mem\n",
797 hba->host->host_no);
798 goto free_request_irq;
799 }
800
801 hba->dma_coherent = start_virt;
802 hba->dma_coherent_handle = start_phy;
803
804 if ((start_phy & 0x1f) != 0)
805 {
806 offset = ((start_phy + 0x1f) & ~0x1f) - start_phy;
807 start_phy += offset;
808 start_virt += offset;
809 }
810
811 hba->req_list = start_virt;
812 for (i = 0; i < hba->max_requests; i++) {
813 hba->reqs[i].next = NULL;
814 hba->reqs[i].req_virt = start_virt;
815 hba->reqs[i].req_shifted_phy = start_phy >> 5;
816 hba->reqs[i].index = i;
817 free_req(hba, &hba->reqs[i]);
818 start_virt = (char *)start_virt + hba->req_size;
819 start_phy = start_phy + hba->req_size;
820 }
821
822 /* Enable Interrupt and start background task */
823 if (hptiop_initialize_iop(hba))
824 goto free_request_mem;
825
826 if (scsi_add_host(host, &pcidev->dev)) {
827 printk(KERN_ERR "scsi%d: scsi_add_host failed\n",
828 hba->host->host_no);
829 goto free_request_mem;
830 }
831
832
833 scsi_scan_host(host);
834
835 dprintk("scsi%d: hptiop_probe successfully\n", hba->host->host_no);
836 return 0;
837
838 free_request_mem:
839 dma_free_coherent(&hba->pcidev->dev,
840 hba->req_size*hba->max_requests + 0x20,
841 hba->dma_coherent, hba->dma_coherent_handle);
842
843 free_request_irq:
844 free_irq(hba->pcidev->irq, hba);
845
846 unmap_pci_bar:
847 iounmap(hba->iop);
848
849 free_pci_regions:
850 pci_release_regions(pcidev) ;
851
852 free_scsi_host:
853 scsi_host_put(host);
854
855 disable_pci_device:
856 pci_disable_device(pcidev);
857
858 dprintk("scsi%d: hptiop_probe fail\n", host->host_no);
859 return -ENODEV;
860 }
861
862 static void hptiop_shutdown(struct pci_dev *pcidev)
863 {
864 struct Scsi_Host *host = pci_get_drvdata(pcidev);
865 struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
866 struct hpt_iopmu __iomem *iop = hba->iop;
867 u32 int_mask;
868
869 dprintk("hptiop_shutdown(%p)\n", hba);
870
871 /* stop the iop */
872 if (iop_send_sync_msg(hba, IOPMU_INBOUND_MSG0_SHUTDOWN, 60000))
873 printk(KERN_ERR "scsi%d: shutdown the iop timeout\n",
874 hba->host->host_no);
875
876 /* disable all outbound interrupts */
877 int_mask = readl(&iop->outbound_intmask);
878 writel(int_mask |
879 IOPMU_OUTBOUND_INT_MSG0 | IOPMU_OUTBOUND_INT_POSTQUEUE,
880 &iop->outbound_intmask);
881 hptiop_pci_posting_flush(iop);
882 }
883
884 static void hptiop_remove(struct pci_dev *pcidev)
885 {
886 struct Scsi_Host *host = pci_get_drvdata(pcidev);
887 struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
888
889 dprintk("scsi%d: hptiop_remove\n", hba->host->host_no);
890
891 scsi_remove_host(host);
892
893 hptiop_shutdown(pcidev);
894
895 free_irq(hba->pcidev->irq, hba);
896
897 dma_free_coherent(&hba->pcidev->dev,
898 hba->req_size * hba->max_requests + 0x20,
899 hba->dma_coherent,
900 hba->dma_coherent_handle);
901
902 iounmap(hba->iop);
903
904 pci_release_regions(hba->pcidev);
905 pci_set_drvdata(hba->pcidev, NULL);
906 pci_disable_device(hba->pcidev);
907
908 scsi_host_put(host);
909 }
910
911 static struct pci_device_id hptiop_id_table[] = {
912 { PCI_DEVICE(0x1103, 0x3220) },
913 { PCI_DEVICE(0x1103, 0x3320) },
914 {},
915 };
916
917 MODULE_DEVICE_TABLE(pci, hptiop_id_table);
918
919 static struct pci_driver hptiop_pci_driver = {
920 .name = driver_name,
921 .id_table = hptiop_id_table,
922 .probe = hptiop_probe,
923 .remove = hptiop_remove,
924 .shutdown = hptiop_shutdown,
925 };
926
927 static int __init hptiop_module_init(void)
928 {
929 printk(KERN_INFO "%s %s\n", driver_name_long, driver_ver);
930 return pci_register_driver(&hptiop_pci_driver);
931 }
932
933 static void __exit hptiop_module_exit(void)
934 {
935 pci_unregister_driver(&hptiop_pci_driver);
936 }
937
938
939 module_init(hptiop_module_init);
940 module_exit(hptiop_module_exit);
941
942 MODULE_LICENSE("GPL");
A Kernel for the Dreambox dm7025.