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fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / drivers / scsi / hptiop.c
blob8515054cdf703ef079f7525334c24865276fa11b
1 /*
2 * HighPoint RR3xxx controller driver for Linux
3 * Copyright (C) 2006-2007 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[] = "v1.2 (070830)";
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_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 u32 tag;
331
332 if (hba->iopintf_v2) {
333 tag = _tag & ~ IOPMU_QUEUE_REQUEST_RESULT_BIT;
334 req = hba->reqs[tag].req_virt;
335 if (likely(_tag & IOPMU_QUEUE_REQUEST_RESULT_BIT))
336 req->header.result = IOP_RESULT_SUCCESS;
337 } else {
338 tag = _tag;
339 req = hba->reqs[tag].req_virt;
340 }
341
342 dprintk("hptiop_host_request_callback: req=%p, type=%d, "
343 "result=%d, context=0x%x tag=%d\n",
344 req, req->header.type, req->header.result,
345 req->header.context, tag);
346
347 BUG_ON(!req->header.result);
348 BUG_ON(req->header.type != cpu_to_le32(IOP_REQUEST_TYPE_SCSI_COMMAND));
349
350 scp = hba->reqs[tag].scp;
351
352 if (HPT_SCP(scp)->mapped)
353 scsi_dma_unmap(scp);
354
355 switch (le32_to_cpu(req->header.result)) {
356 case IOP_RESULT_SUCCESS:
357 scp->result = (DID_OK<<16);
358 break;
359 case IOP_RESULT_BAD_TARGET:
360 scp->result = (DID_BAD_TARGET<<16);
361 break;
362 case IOP_RESULT_BUSY:
363 scp->result = (DID_BUS_BUSY<<16);
364 break;
365 case IOP_RESULT_RESET:
366 scp->result = (DID_RESET<<16);
367 break;
368 case IOP_RESULT_FAIL:
369 scp->result = (DID_ERROR<<16);
370 break;
371 case IOP_RESULT_INVALID_REQUEST:
372 scp->result = (DID_ABORT<<16);
373 break;
374 case IOP_RESULT_MODE_SENSE_CHECK_CONDITION:
375 scp->result = SAM_STAT_CHECK_CONDITION;
376 memset(&scp->sense_buffer,
377 0, sizeof(scp->sense_buffer));
378 memcpy(&scp->sense_buffer,
379 &req->sg_list, le32_to_cpu(req->dataxfer_length));
380 break;
381
382 default:
383 scp->result = ((DRIVER_INVALID|SUGGEST_ABORT)<<24) |
384 (DID_ABORT<<16);
385 break;
386 }
387
388 dprintk("scsi_done(%p)\n", scp);
389 scp->scsi_done(scp);
390 free_req(hba, &hba->reqs[tag]);
391 }
392
393 void hptiop_iop_request_callback(struct hptiop_hba *hba, u32 tag)
394 {
395 struct hpt_iop_request_header __iomem *req;
396 struct hpt_iop_request_ioctl_command __iomem *p;
397 struct hpt_ioctl_k *arg;
398
399 req = (struct hpt_iop_request_header __iomem *)
400 ((unsigned long)hba->iop + tag);
401 dprintk("hptiop_iop_request_callback: req=%p, type=%d, "
402 "result=%d, context=0x%x tag=%d\n",
403 req, readl(&req->type), readl(&req->result),
404 readl(&req->context), tag);
405
406 BUG_ON(!readl(&req->result));
407 BUG_ON(readl(&req->type) != IOP_REQUEST_TYPE_IOCTL_COMMAND);
408
409 p = (struct hpt_iop_request_ioctl_command __iomem *)req;
410 arg = (struct hpt_ioctl_k *)(unsigned long)
411 (readl(&req->context) |
412 ((u64)readl(&req->context_hi32)<<32));
413
414 if (readl(&req->result) == IOP_RESULT_SUCCESS) {
415 arg->result = HPT_IOCTL_RESULT_OK;
416
417 if (arg->outbuf_size)
418 memcpy_fromio(arg->outbuf,
419 &p->buf[(readl(&p->inbuf_size) + 3)& ~3],
420 arg->outbuf_size);
421
422 if (arg->bytes_returned)
423 *arg->bytes_returned = arg->outbuf_size;
424 }
425 else
426 arg->result = HPT_IOCTL_RESULT_FAILED;
427
428 arg->done(arg);
429 writel(tag, &hba->iop->outbound_queue);
430 }
431
432 static irqreturn_t hptiop_intr(int irq, void *dev_id)
433 {
434 struct hptiop_hba *hba = dev_id;
435 int handled;
436 unsigned long flags;
437
438 spin_lock_irqsave(hba->host->host_lock, flags);
439 handled = __iop_intr(hba);
440 spin_unlock_irqrestore(hba->host->host_lock, flags);
441
442 return handled;
443 }
444
445 static int hptiop_buildsgl(struct scsi_cmnd *scp, struct hpt_iopsg *psg)
446 {
447 struct Scsi_Host *host = scp->device->host;
448 struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
449 struct scatterlist *sg;
450 int idx, nseg;
451
452 nseg = scsi_dma_map(scp);
453 BUG_ON(nseg < 0);
454 if (!nseg)
455 return 0;
456
457 HPT_SCP(scp)->sgcnt = nseg;
458 HPT_SCP(scp)->mapped = 1;
459
460 BUG_ON(HPT_SCP(scp)->sgcnt > hba->max_sg_descriptors);
461
462 scsi_for_each_sg(scp, sg, HPT_SCP(scp)->sgcnt, idx) {
463 psg[idx].pci_address = cpu_to_le64(sg_dma_address(sg));
464 psg[idx].size = cpu_to_le32(sg_dma_len(sg));
465 psg[idx].eot = (idx == HPT_SCP(scp)->sgcnt - 1) ?
466 cpu_to_le32(1) : 0;
467 }
468 return HPT_SCP(scp)->sgcnt;
469 }
470
471 static int hptiop_queuecommand(struct scsi_cmnd *scp,
472 void (*done)(struct scsi_cmnd *))
473 {
474 struct Scsi_Host *host = scp->device->host;
475 struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
476 struct hpt_iop_request_scsi_command *req;
477 int sg_count = 0;
478 struct hptiop_request *_req;
479
480 BUG_ON(!done);
481 scp->scsi_done = done;
482
483 _req = get_req(hba);
484 if (_req == NULL) {
485 dprintk("hptiop_queuecmd : no free req\n");
486 return SCSI_MLQUEUE_HOST_BUSY;
487 }
488
489 _req->scp = scp;
490
491 dprintk("hptiop_queuecmd(scp=%p) %d/%d/%d/%d cdb=(%x-%x-%x) "
492 "req_index=%d, req=%p\n",
493 scp,
494 host->host_no, scp->device->channel,
495 scp->device->id, scp->device->lun,
496 *((u32 *)&scp->cmnd),
497 *((u32 *)&scp->cmnd + 1),
498 *((u32 *)&scp->cmnd + 2),
499 _req->index, _req->req_virt);
500
501 scp->result = 0;
502
503 if (scp->device->channel || scp->device->lun ||
504 scp->device->id > hba->max_devices) {
505 scp->result = DID_BAD_TARGET << 16;
506 free_req(hba, _req);
507 goto cmd_done;
508 }
509
510 req = _req->req_virt;
511
512 /* build S/G table */
513 sg_count = hptiop_buildsgl(scp, req->sg_list);
514 if (!sg_count)
515 HPT_SCP(scp)->mapped = 0;
516
517 req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
518 req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_SCSI_COMMAND);
519 req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
520 req->header.context = cpu_to_le32(IOPMU_QUEUE_ADDR_HOST_BIT |
521 (u32)_req->index);
522 req->header.context_hi32 = 0;
523 req->dataxfer_length = cpu_to_le32(scsi_bufflen(scp));
524 req->channel = scp->device->channel;
525 req->target = scp->device->id;
526 req->lun = scp->device->lun;
527 req->header.size = cpu_to_le32(
528 sizeof(struct hpt_iop_request_scsi_command)
529 - sizeof(struct hpt_iopsg)
530 + sg_count * sizeof(struct hpt_iopsg));
531
532 memcpy(req->cdb, scp->cmnd, sizeof(req->cdb));
533
534 if (hba->iopintf_v2) {
535 u32 size_bits;
536 if (req->header.size < 256)
537 size_bits = IOPMU_QUEUE_REQUEST_SIZE_BIT;
538 else if (req->header.size < 512)
539 size_bits = IOPMU_QUEUE_ADDR_HOST_BIT;
540 else
541 size_bits = IOPMU_QUEUE_REQUEST_SIZE_BIT |
542 IOPMU_QUEUE_ADDR_HOST_BIT;
543 writel(_req->req_shifted_phy | size_bits, &hba->iop->inbound_queue);
544 } else
545 writel(_req->req_shifted_phy | IOPMU_QUEUE_ADDR_HOST_BIT,
546 &hba->iop->inbound_queue);
547
548 return 0;
549
550 cmd_done:
551 dprintk("scsi_done(scp=%p)\n", scp);
552 scp->scsi_done(scp);
553 return 0;
554 }
555
556 static const char *hptiop_info(struct Scsi_Host *host)
557 {
558 return driver_name_long;
559 }
560
561 static int hptiop_reset_hba(struct hptiop_hba *hba)
562 {
563 if (atomic_xchg(&hba->resetting, 1) == 0) {
564 atomic_inc(&hba->reset_count);
565 writel(IOPMU_INBOUND_MSG0_RESET,
566 &hba->iop->inbound_msgaddr0);
567 hptiop_pci_posting_flush(hba->iop);
568 }
569
570 wait_event_timeout(hba->reset_wq,
571 atomic_read(&hba->resetting) == 0, 60 * HZ);
572
573 if (atomic_read(&hba->resetting)) {
574 /* IOP is in unkown state, abort reset */
575 printk(KERN_ERR "scsi%d: reset failed\n", hba->host->host_no);
576 return -1;
577 }
578
579 if (iop_send_sync_msg(hba,
580 IOPMU_INBOUND_MSG0_START_BACKGROUND_TASK, 5000)) {
581 dprintk("scsi%d: fail to start background task\n",
582 hba->host->host_no);
583 }
584
585 return 0;
586 }
587
588 static int hptiop_reset(struct scsi_cmnd *scp)
589 {
590 struct Scsi_Host * host = scp->device->host;
591 struct hptiop_hba * hba = (struct hptiop_hba *)host->hostdata;
592
593 printk(KERN_WARNING "hptiop_reset(%d/%d/%d) scp=%p\n",
594 scp->device->host->host_no, scp->device->channel,
595 scp->device->id, scp);
596
597 return hptiop_reset_hba(hba)? FAILED : SUCCESS;
598 }
599
600 static int hptiop_adjust_disk_queue_depth(struct scsi_device *sdev,
601 int queue_depth)
602 {
603 if(queue_depth > 256)
604 queue_depth = 256;
605 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
606 return queue_depth;
607 }
608
609 static ssize_t hptiop_show_version(struct class_device *class_dev, char *buf)
610 {
611 return snprintf(buf, PAGE_SIZE, "%s\n", driver_ver);
612 }
613
614 static ssize_t hptiop_show_fw_version(struct class_device *class_dev, char *buf)
615 {
616 struct Scsi_Host *host = class_to_shost(class_dev);
617 struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
618
619 return snprintf(buf, PAGE_SIZE, "%d.%d.%d.%d\n",
620 hba->firmware_version >> 24,
621 (hba->firmware_version >> 16) & 0xff,
622 (hba->firmware_version >> 8) & 0xff,
623 hba->firmware_version & 0xff);
624 }
625
626 static struct class_device_attribute hptiop_attr_version = {
627 .attr = {
628 .name = "driver-version",
629 .mode = S_IRUGO,
630 },
631 .show = hptiop_show_version,
632 };
633
634 static struct class_device_attribute hptiop_attr_fw_version = {
635 .attr = {
636 .name = "firmware-version",
637 .mode = S_IRUGO,
638 },
639 .show = hptiop_show_fw_version,
640 };
641
642 static struct class_device_attribute *hptiop_attrs[] = {
643 &hptiop_attr_version,
644 &hptiop_attr_fw_version,
645 NULL
646 };
647
648 static struct scsi_host_template driver_template = {
649 .module = THIS_MODULE,
650 .name = driver_name,
651 .queuecommand = hptiop_queuecommand,
652 .eh_device_reset_handler = hptiop_reset,
653 .eh_bus_reset_handler = hptiop_reset,
654 .info = hptiop_info,
655 .unchecked_isa_dma = 0,
656 .emulated = 0,
657 .use_clustering = ENABLE_CLUSTERING,
658 .use_sg_chaining = ENABLE_SG_CHAINING,
659 .proc_name = driver_name,
660 .shost_attrs = hptiop_attrs,
661 .this_id = -1,
662 .change_queue_depth = hptiop_adjust_disk_queue_depth,
663 };
664
665 static int __devinit hptiop_probe(struct pci_dev *pcidev,
666 const struct pci_device_id *id)
667 {
668 struct Scsi_Host *host = NULL;
669 struct hptiop_hba *hba;
670 struct hpt_iop_request_get_config iop_config;
671 struct hpt_iop_request_set_config set_config;
672 dma_addr_t start_phy;
673 void *start_virt;
674 u32 offset, i, req_size;
675
676 dprintk("hptiop_probe(%p)\n", pcidev);
677
678 if (pci_enable_device(pcidev)) {
679 printk(KERN_ERR "hptiop: fail to enable pci device\n");
680 return -ENODEV;
681 }
682
683 printk(KERN_INFO "adapter at PCI %d:%d:%d, IRQ %d\n",
684 pcidev->bus->number, pcidev->devfn >> 3, pcidev->devfn & 7,
685 pcidev->irq);
686
687 pci_set_master(pcidev);
688
689 /* Enable 64bit DMA if possible */
690 if (pci_set_dma_mask(pcidev, DMA_64BIT_MASK)) {
691 if (pci_set_dma_mask(pcidev, DMA_32BIT_MASK)) {
692 printk(KERN_ERR "hptiop: fail to set dma_mask\n");
693 goto disable_pci_device;
694 }
695 }
696
697 if (pci_request_regions(pcidev, driver_name)) {
698 printk(KERN_ERR "hptiop: pci_request_regions failed\n");
699 goto disable_pci_device;
700 }
701
702 host = scsi_host_alloc(&driver_template, sizeof(struct hptiop_hba));
703 if (!host) {
704 printk(KERN_ERR "hptiop: fail to alloc scsi host\n");
705 goto free_pci_regions;
706 }
707
708 hba = (struct hptiop_hba *)host->hostdata;
709
710 hba->pcidev = pcidev;
711 hba->host = host;
712 hba->initialized = 0;
713 hba->iopintf_v2 = 0;
714
715 atomic_set(&hba->resetting, 0);
716 atomic_set(&hba->reset_count, 0);
717
718 init_waitqueue_head(&hba->reset_wq);
719 init_waitqueue_head(&hba->ioctl_wq);
720
721 host->max_lun = 1;
722 host->max_channel = 0;
723 host->io_port = 0;
724 host->n_io_port = 0;
725 host->irq = pcidev->irq;
726
727 if (hptiop_map_pci_bar(hba))
728 goto free_scsi_host;
729
730 if (iop_wait_ready(hba->iop, 20000)) {
731 printk(KERN_ERR "scsi%d: firmware not ready\n",
732 hba->host->host_no);
733 goto unmap_pci_bar;
734 }
735
736 if (iop_get_config(hba, &iop_config)) {
737 printk(KERN_ERR "scsi%d: get config failed\n",
738 hba->host->host_no);
739 goto unmap_pci_bar;
740 }
741
742 hba->max_requests = min(le32_to_cpu(iop_config.max_requests),
743 HPTIOP_MAX_REQUESTS);
744 hba->max_devices = le32_to_cpu(iop_config.max_devices);
745 hba->max_request_size = le32_to_cpu(iop_config.request_size);
746 hba->max_sg_descriptors = le32_to_cpu(iop_config.max_sg_count);
747 hba->firmware_version = le32_to_cpu(iop_config.firmware_version);
748 hba->interface_version = le32_to_cpu(iop_config.interface_version);
749 hba->sdram_size = le32_to_cpu(iop_config.sdram_size);
750
751 if (hba->firmware_version > 0x01020000 ||
752 hba->interface_version > 0x01020000)
753 hba->iopintf_v2 = 1;
754
755 host->max_sectors = le32_to_cpu(iop_config.data_transfer_length) >> 9;
756 host->max_id = le32_to_cpu(iop_config.max_devices);
757 host->sg_tablesize = le32_to_cpu(iop_config.max_sg_count);
758 host->can_queue = le32_to_cpu(iop_config.max_requests);
759 host->cmd_per_lun = le32_to_cpu(iop_config.max_requests);
760 host->max_cmd_len = 16;
761
762 req_size = sizeof(struct hpt_iop_request_scsi_command)
763 + sizeof(struct hpt_iopsg) * (hba->max_sg_descriptors - 1);
764 if ((req_size & 0x1f) != 0)
765 req_size = (req_size + 0x1f) & ~0x1f;
766
767 memset(&set_config, 0, sizeof(struct hpt_iop_request_set_config));
768 set_config.iop_id = cpu_to_le32(host->host_no);
769 set_config.vbus_id = cpu_to_le16(host->host_no);
770 set_config.max_host_request_size = cpu_to_le16(req_size);
771
772 if (iop_set_config(hba, &set_config)) {
773 printk(KERN_ERR "scsi%d: set config failed\n",
774 hba->host->host_no);
775 goto unmap_pci_bar;
776 }
777
778 pci_set_drvdata(pcidev, host);
779
780 if (request_irq(pcidev->irq, hptiop_intr, IRQF_SHARED,
781 driver_name, hba)) {
782 printk(KERN_ERR "scsi%d: request irq %d failed\n",
783 hba->host->host_no, pcidev->irq);
784 goto unmap_pci_bar;
785 }
786
787 /* Allocate request mem */
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_VDEVICE(TTI, 0x3220) },
914 { PCI_VDEVICE(TTI, 0x3320) },
915 { PCI_VDEVICE(TTI, 0x3520) },
916 { PCI_VDEVICE(TTI, 0x4320) },
917 {},
918 };
919
920 MODULE_DEVICE_TABLE(pci, hptiop_id_table);
921
922 static struct pci_driver hptiop_pci_driver = {
923 .name = driver_name,
924 .id_table = hptiop_id_table,
925 .probe = hptiop_probe,
926 .remove = hptiop_remove,
927 .shutdown = hptiop_shutdown,
928 };
929
930 static int __init hptiop_module_init(void)
931 {
932 printk(KERN_INFO "%s %s\n", driver_name_long, driver_ver);
933 return pci_register_driver(&hptiop_pci_driver);
934 }
935
936 static void __exit hptiop_module_exit(void)
937 {
938 pci_unregister_driver(&hptiop_pci_driver);
939 }
940
941
942 module_init(hptiop_module_init);
943 module_exit(hptiop_module_exit);
944
945 MODULE_LICENSE("GPL");
946
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