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Force reset on decompression error
[linux-2.6/tcp-comp.git] / drivers / scsi / hptiop.c
blobffdd0da555476c6ee329dbe289d85cfbf6ace158
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 scsi_dma_unmap(scp);
344
345 switch (le32_to_cpu(req->header.result)) {
346 case IOP_RESULT_SUCCESS:
347 scp->result = (DID_OK<<16);
348 break;
349 case IOP_RESULT_BAD_TARGET:
350 scp->result = (DID_BAD_TARGET<<16);
351 break;
352 case IOP_RESULT_BUSY:
353 scp->result = (DID_BUS_BUSY<<16);
354 break;
355 case IOP_RESULT_RESET:
356 scp->result = (DID_RESET<<16);
357 break;
358 case IOP_RESULT_FAIL:
359 scp->result = (DID_ERROR<<16);
360 break;
361 case IOP_RESULT_INVALID_REQUEST:
362 scp->result = (DID_ABORT<<16);
363 break;
364 case IOP_RESULT_MODE_SENSE_CHECK_CONDITION:
365 scp->result = SAM_STAT_CHECK_CONDITION;
366 memset(&scp->sense_buffer,
367 0, sizeof(scp->sense_buffer));
368 memcpy(&scp->sense_buffer, &req->sg_list,
369 min(sizeof(scp->sense_buffer),
370 le32_to_cpu(req->dataxfer_length)));
371 break;
372
373 default:
374 scp->result = ((DRIVER_INVALID|SUGGEST_ABORT)<<24) |
375 (DID_ABORT<<16);
376 break;
377 }
378
379 dprintk("scsi_done(%p)\n", scp);
380 scp->scsi_done(scp);
381 free_req(hba, &hba->reqs[tag]);
382 }
383
384 void hptiop_iop_request_callback(struct hptiop_hba *hba, u32 tag)
385 {
386 struct hpt_iop_request_header __iomem *req;
387 struct hpt_iop_request_ioctl_command __iomem *p;
388 struct hpt_ioctl_k *arg;
389
390 req = (struct hpt_iop_request_header __iomem *)
391 ((unsigned long)hba->iop + tag);
392 dprintk("hptiop_iop_request_callback: req=%p, type=%d, "
393 "result=%d, context=0x%x tag=%d\n",
394 req, readl(&req->type), readl(&req->result),
395 readl(&req->context), tag);
396
397 BUG_ON(!readl(&req->result));
398 BUG_ON(readl(&req->type) != IOP_REQUEST_TYPE_IOCTL_COMMAND);
399
400 p = (struct hpt_iop_request_ioctl_command __iomem *)req;
401 arg = (struct hpt_ioctl_k *)(unsigned long)
402 (readl(&req->context) |
403 ((u64)readl(&req->context_hi32)<<32));
404
405 if (readl(&req->result) == IOP_RESULT_SUCCESS) {
406 arg->result = HPT_IOCTL_RESULT_OK;
407
408 if (arg->outbuf_size)
409 memcpy_fromio(arg->outbuf,
410 &p->buf[(readl(&p->inbuf_size) + 3)& ~3],
411 arg->outbuf_size);
412
413 if (arg->bytes_returned)
414 *arg->bytes_returned = arg->outbuf_size;
415 }
416 else
417 arg->result = HPT_IOCTL_RESULT_FAILED;
418
419 arg->done(arg);
420 writel(tag, &hba->iop->outbound_queue);
421 }
422
423 static irqreturn_t hptiop_intr(int irq, void *dev_id)
424 {
425 struct hptiop_hba *hba = dev_id;
426 int handled;
427 unsigned long flags;
428
429 spin_lock_irqsave(hba->host->host_lock, flags);
430 handled = __iop_intr(hba);
431 spin_unlock_irqrestore(hba->host->host_lock, flags);
432
433 return handled;
434 }
435
436 static int hptiop_buildsgl(struct scsi_cmnd *scp, struct hpt_iopsg *psg)
437 {
438 struct Scsi_Host *host = scp->device->host;
439 struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
440 struct scatterlist *sg;
441 int idx, nseg;
442
443 nseg = scsi_dma_map(scp);
444 BUG_ON(nseg < 0);
445 if (!nseg)
446 return 0;
447
448 HPT_SCP(scp)->sgcnt = nseg;
449 HPT_SCP(scp)->mapped = 1;
450
451 BUG_ON(HPT_SCP(scp)->sgcnt > hba->max_sg_descriptors);
452
453 scsi_for_each_sg(scp, sg, HPT_SCP(scp)->sgcnt, idx) {
454 psg[idx].pci_address = cpu_to_le64(sg_dma_address(sg));
455 psg[idx].size = cpu_to_le32(sg_dma_len(sg));
456 psg[idx].eot = (idx == HPT_SCP(scp)->sgcnt - 1) ?
457 cpu_to_le32(1) : 0;
458 }
459 return HPT_SCP(scp)->sgcnt;
460 }
461
462 static int hptiop_queuecommand(struct scsi_cmnd *scp,
463 void (*done)(struct scsi_cmnd *))
464 {
465 struct Scsi_Host *host = scp->device->host;
466 struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
467 struct hpt_iop_request_scsi_command *req;
468 int sg_count = 0;
469 struct hptiop_request *_req;
470
471 BUG_ON(!done);
472 scp->scsi_done = done;
473
474 _req = get_req(hba);
475 if (_req == NULL) {
476 dprintk("hptiop_queuecmd : no free req\n");
477 return SCSI_MLQUEUE_HOST_BUSY;
478 }
479
480 _req->scp = scp;
481
482 dprintk("hptiop_queuecmd(scp=%p) %d/%d/%d/%d cdb=(%x-%x-%x) "
483 "req_index=%d, req=%p\n",
484 scp,
485 host->host_no, scp->device->channel,
486 scp->device->id, scp->device->lun,
487 *((u32 *)&scp->cmnd),
488 *((u32 *)&scp->cmnd + 1),
489 *((u32 *)&scp->cmnd + 2),
490 _req->index, _req->req_virt);
491
492 scp->result = 0;
493
494 if (scp->device->channel || scp->device->lun ||
495 scp->device->id > hba->max_devices) {
496 scp->result = DID_BAD_TARGET << 16;
497 free_req(hba, _req);
498 goto cmd_done;
499 }
500
501 req = (struct hpt_iop_request_scsi_command *)_req->req_virt;
502
503 /* build S/G table */
504 sg_count = hptiop_buildsgl(scp, req->sg_list);
505 if (!sg_count)
506 HPT_SCP(scp)->mapped = 0;
507
508 req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
509 req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_SCSI_COMMAND);
510 req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
511 req->header.context = cpu_to_le32(IOPMU_QUEUE_ADDR_HOST_BIT |
512 (u32)_req->index);
513 req->header.context_hi32 = 0;
514 req->dataxfer_length = cpu_to_le32(scsi_bufflen(scp));
515 req->channel = scp->device->channel;
516 req->target = scp->device->id;
517 req->lun = scp->device->lun;
518 req->header.size = cpu_to_le32(
519 sizeof(struct hpt_iop_request_scsi_command)
520 - sizeof(struct hpt_iopsg)
521 + sg_count * sizeof(struct hpt_iopsg));
522
523 memcpy(req->cdb, scp->cmnd, sizeof(req->cdb));
524
525 writel(IOPMU_QUEUE_ADDR_HOST_BIT | _req->req_shifted_phy,
526 &hba->iop->inbound_queue);
527
528 return 0;
529
530 cmd_done:
531 dprintk("scsi_done(scp=%p)\n", scp);
532 scp->scsi_done(scp);
533 return 0;
534 }
535
536 static const char *hptiop_info(struct Scsi_Host *host)
537 {
538 return driver_name_long;
539 }
540
541 static int hptiop_reset_hba(struct hptiop_hba *hba)
542 {
543 if (atomic_xchg(&hba->resetting, 1) == 0) {
544 atomic_inc(&hba->reset_count);
545 writel(IOPMU_INBOUND_MSG0_RESET,
546 &hba->iop->inbound_msgaddr0);
547 hptiop_pci_posting_flush(hba->iop);
548 }
549
550 wait_event_timeout(hba->reset_wq,
551 atomic_read(&hba->resetting) == 0, 60 * HZ);
552
553 if (atomic_read(&hba->resetting)) {
554 /* IOP is in unkown state, abort reset */
555 printk(KERN_ERR "scsi%d: reset failed\n", hba->host->host_no);
556 return -1;
557 }
558
559 if (iop_send_sync_msg(hba,
560 IOPMU_INBOUND_MSG0_START_BACKGROUND_TASK, 5000)) {
561 dprintk("scsi%d: fail to start background task\n",
562 hba->host->host_no);
563 }
564
565 return 0;
566 }
567
568 static int hptiop_reset(struct scsi_cmnd *scp)
569 {
570 struct Scsi_Host * host = scp->device->host;
571 struct hptiop_hba * hba = (struct hptiop_hba *)host->hostdata;
572
573 printk(KERN_WARNING "hptiop_reset(%d/%d/%d) scp=%p\n",
574 scp->device->host->host_no, scp->device->channel,
575 scp->device->id, scp);
576
577 return hptiop_reset_hba(hba)? FAILED : SUCCESS;
578 }
579
580 static int hptiop_adjust_disk_queue_depth(struct scsi_device *sdev,
581 int queue_depth)
582 {
583 if(queue_depth > 256)
584 queue_depth = 256;
585 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
586 return queue_depth;
587 }
588
589 static ssize_t hptiop_show_version(struct class_device *class_dev, char *buf)
590 {
591 return snprintf(buf, PAGE_SIZE, "%s\n", driver_ver);
592 }
593
594 static ssize_t hptiop_show_fw_version(struct class_device *class_dev, char *buf)
595 {
596 struct Scsi_Host *host = class_to_shost(class_dev);
597 struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
598
599 return snprintf(buf, PAGE_SIZE, "%d.%d.%d.%d\n",
600 hba->firmware_version >> 24,
601 (hba->firmware_version >> 16) & 0xff,
602 (hba->firmware_version >> 8) & 0xff,
603 hba->firmware_version & 0xff);
604 }
605
606 static struct class_device_attribute hptiop_attr_version = {
607 .attr = {
608 .name = "driver-version",
609 .mode = S_IRUGO,
610 },
611 .show = hptiop_show_version,
612 };
613
614 static struct class_device_attribute hptiop_attr_fw_version = {
615 .attr = {
616 .name = "firmware-version",
617 .mode = S_IRUGO,
618 },
619 .show = hptiop_show_fw_version,
620 };
621
622 static struct class_device_attribute *hptiop_attrs[] = {
623 &hptiop_attr_version,
624 &hptiop_attr_fw_version,
625 NULL
626 };
627
628 static struct scsi_host_template driver_template = {
629 .module = THIS_MODULE,
630 .name = driver_name,
631 .queuecommand = hptiop_queuecommand,
632 .eh_device_reset_handler = hptiop_reset,
633 .eh_bus_reset_handler = hptiop_reset,
634 .info = hptiop_info,
635 .unchecked_isa_dma = 0,
636 .emulated = 0,
637 .use_clustering = ENABLE_CLUSTERING,
638 .proc_name = driver_name,
639 .shost_attrs = hptiop_attrs,
640 .this_id = -1,
641 .change_queue_depth = hptiop_adjust_disk_queue_depth,
642 };
643
644 static int __devinit hptiop_probe(struct pci_dev *pcidev,
645 const struct pci_device_id *id)
646 {
647 struct Scsi_Host *host = NULL;
648 struct hptiop_hba *hba;
649 struct hpt_iop_request_get_config iop_config;
650 struct hpt_iop_request_set_config set_config;
651 dma_addr_t start_phy;
652 void *start_virt;
653 u32 offset, i, req_size;
654
655 dprintk("hptiop_probe(%p)\n", pcidev);
656
657 if (pci_enable_device(pcidev)) {
658 printk(KERN_ERR "hptiop: fail to enable pci device\n");
659 return -ENODEV;
660 }
661
662 printk(KERN_INFO "adapter at PCI %d:%d:%d, IRQ %d\n",
663 pcidev->bus->number, pcidev->devfn >> 3, pcidev->devfn & 7,
664 pcidev->irq);
665
666 pci_set_master(pcidev);
667
668 /* Enable 64bit DMA if possible */
669 if (pci_set_dma_mask(pcidev, DMA_64BIT_MASK)) {
670 if (pci_set_dma_mask(pcidev, DMA_32BIT_MASK)) {
671 printk(KERN_ERR "hptiop: fail to set dma_mask\n");
672 goto disable_pci_device;
673 }
674 }
675
676 if (pci_request_regions(pcidev, driver_name)) {
677 printk(KERN_ERR "hptiop: pci_request_regions failed\n");
678 goto disable_pci_device;
679 }
680
681 host = scsi_host_alloc(&driver_template, sizeof(struct hptiop_hba));
682 if (!host) {
683 printk(KERN_ERR "hptiop: fail to alloc scsi host\n");
684 goto free_pci_regions;
685 }
686
687 hba = (struct hptiop_hba *)host->hostdata;
688
689 hba->pcidev = pcidev;
690 hba->host = host;
691 hba->initialized = 0;
692
693 atomic_set(&hba->resetting, 0);
694 atomic_set(&hba->reset_count, 0);
695
696 init_waitqueue_head(&hba->reset_wq);
697 init_waitqueue_head(&hba->ioctl_wq);
698
699 host->max_lun = 1;
700 host->max_channel = 0;
701 host->io_port = 0;
702 host->n_io_port = 0;
703 host->irq = pcidev->irq;
704
705 if (hptiop_map_pci_bar(hba))
706 goto free_scsi_host;
707
708 if (iop_wait_ready(hba->iop, 20000)) {
709 printk(KERN_ERR "scsi%d: firmware not ready\n",
710 hba->host->host_no);
711 goto unmap_pci_bar;
712 }
713
714 if (iop_get_config(hba, &iop_config)) {
715 printk(KERN_ERR "scsi%d: get config failed\n",
716 hba->host->host_no);
717 goto unmap_pci_bar;
718 }
719
720 hba->max_requests = min(le32_to_cpu(iop_config.max_requests),
721 HPTIOP_MAX_REQUESTS);
722 hba->max_devices = le32_to_cpu(iop_config.max_devices);
723 hba->max_request_size = le32_to_cpu(iop_config.request_size);
724 hba->max_sg_descriptors = le32_to_cpu(iop_config.max_sg_count);
725 hba->firmware_version = le32_to_cpu(iop_config.firmware_version);
726 hba->sdram_size = le32_to_cpu(iop_config.sdram_size);
727
728 host->max_sectors = le32_to_cpu(iop_config.data_transfer_length) >> 9;
729 host->max_id = le32_to_cpu(iop_config.max_devices);
730 host->sg_tablesize = le32_to_cpu(iop_config.max_sg_count);
731 host->can_queue = le32_to_cpu(iop_config.max_requests);
732 host->cmd_per_lun = le32_to_cpu(iop_config.max_requests);
733 host->max_cmd_len = 16;
734
735 set_config.vbus_id = cpu_to_le32(host->host_no);
736 set_config.iop_id = cpu_to_le32(host->host_no);
737
738 if (iop_set_config(hba, &set_config)) {
739 printk(KERN_ERR "scsi%d: set config failed\n",
740 hba->host->host_no);
741 goto unmap_pci_bar;
742 }
743
744 pci_set_drvdata(pcidev, host);
745
746 if (request_irq(pcidev->irq, hptiop_intr, IRQF_SHARED,
747 driver_name, hba)) {
748 printk(KERN_ERR "scsi%d: request irq %d failed\n",
749 hba->host->host_no, pcidev->irq);
750 goto unmap_pci_bar;
751 }
752
753 /* Allocate request mem */
754 req_size = sizeof(struct hpt_iop_request_scsi_command)
755 + sizeof(struct hpt_iopsg) * (hba->max_sg_descriptors - 1);
756 if ((req_size& 0x1f) != 0)
757 req_size = (req_size + 0x1f) & ~0x1f;
758
759 dprintk("req_size=%d, max_requests=%d\n", req_size, hba->max_requests);
760
761 hba->req_size = req_size;
762 start_virt = dma_alloc_coherent(&pcidev->dev,
763 hba->req_size*hba->max_requests + 0x20,
764 &start_phy, GFP_KERNEL);
765
766 if (!start_virt) {
767 printk(KERN_ERR "scsi%d: fail to alloc request mem\n",
768 hba->host->host_no);
769 goto free_request_irq;
770 }
771
772 hba->dma_coherent = start_virt;
773 hba->dma_coherent_handle = start_phy;
774
775 if ((start_phy & 0x1f) != 0)
776 {
777 offset = ((start_phy + 0x1f) & ~0x1f) - start_phy;
778 start_phy += offset;
779 start_virt += offset;
780 }
781
782 hba->req_list = start_virt;
783 for (i = 0; i < hba->max_requests; i++) {
784 hba->reqs[i].next = NULL;
785 hba->reqs[i].req_virt = start_virt;
786 hba->reqs[i].req_shifted_phy = start_phy >> 5;
787 hba->reqs[i].index = i;
788 free_req(hba, &hba->reqs[i]);
789 start_virt = (char *)start_virt + hba->req_size;
790 start_phy = start_phy + hba->req_size;
791 }
792
793 /* Enable Interrupt and start background task */
794 if (hptiop_initialize_iop(hba))
795 goto free_request_mem;
796
797 if (scsi_add_host(host, &pcidev->dev)) {
798 printk(KERN_ERR "scsi%d: scsi_add_host failed\n",
799 hba->host->host_no);
800 goto free_request_mem;
801 }
802
803
804 scsi_scan_host(host);
805
806 dprintk("scsi%d: hptiop_probe successfully\n", hba->host->host_no);
807 return 0;
808
809 free_request_mem:
810 dma_free_coherent(&hba->pcidev->dev,
811 hba->req_size*hba->max_requests + 0x20,
812 hba->dma_coherent, hba->dma_coherent_handle);
813
814 free_request_irq:
815 free_irq(hba->pcidev->irq, hba);
816
817 unmap_pci_bar:
818 iounmap(hba->iop);
819
820 free_pci_regions:
821 pci_release_regions(pcidev) ;
822
823 free_scsi_host:
824 scsi_host_put(host);
825
826 disable_pci_device:
827 pci_disable_device(pcidev);
828
829 dprintk("scsi%d: hptiop_probe fail\n", host->host_no);
830 return -ENODEV;
831 }
832
833 static void hptiop_shutdown(struct pci_dev *pcidev)
834 {
835 struct Scsi_Host *host = pci_get_drvdata(pcidev);
836 struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
837 struct hpt_iopmu __iomem *iop = hba->iop;
838 u32 int_mask;
839
840 dprintk("hptiop_shutdown(%p)\n", hba);
841
842 /* stop the iop */
843 if (iop_send_sync_msg(hba, IOPMU_INBOUND_MSG0_SHUTDOWN, 60000))
844 printk(KERN_ERR "scsi%d: shutdown the iop timeout\n",
845 hba->host->host_no);
846
847 /* disable all outbound interrupts */
848 int_mask = readl(&iop->outbound_intmask);
849 writel(int_mask |
850 IOPMU_OUTBOUND_INT_MSG0 | IOPMU_OUTBOUND_INT_POSTQUEUE,
851 &iop->outbound_intmask);
852 hptiop_pci_posting_flush(iop);
853 }
854
855 static void hptiop_remove(struct pci_dev *pcidev)
856 {
857 struct Scsi_Host *host = pci_get_drvdata(pcidev);
858 struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
859
860 dprintk("scsi%d: hptiop_remove\n", hba->host->host_no);
861
862 scsi_remove_host(host);
863
864 hptiop_shutdown(pcidev);
865
866 free_irq(hba->pcidev->irq, hba);
867
868 dma_free_coherent(&hba->pcidev->dev,
869 hba->req_size * hba->max_requests + 0x20,
870 hba->dma_coherent,
871 hba->dma_coherent_handle);
872
873 iounmap(hba->iop);
874
875 pci_release_regions(hba->pcidev);
876 pci_set_drvdata(hba->pcidev, NULL);
877 pci_disable_device(hba->pcidev);
878
879 scsi_host_put(host);
880 }
881
882 static struct pci_device_id hptiop_id_table[] = {
883 { PCI_DEVICE(0x1103, 0x3220) },
884 { PCI_DEVICE(0x1103, 0x3320) },
885 {},
886 };
887
888 MODULE_DEVICE_TABLE(pci, hptiop_id_table);
889
890 static struct pci_driver hptiop_pci_driver = {
891 .name = driver_name,
892 .id_table = hptiop_id_table,
893 .probe = hptiop_probe,
894 .remove = hptiop_remove,
895 .shutdown = hptiop_shutdown,
896 };
897
898 static int __init hptiop_module_init(void)
899 {
900 printk(KERN_INFO "%s %s\n", driver_name_long, driver_ver);
901 return pci_register_driver(&hptiop_pci_driver);
902 }
903
904 static void __exit hptiop_module_exit(void)
905 {
906 pci_unregister_driver(&hptiop_pci_driver);
907 }
908
909
910 module_init(hptiop_module_init);
911 module_exit(hptiop_module_exit);
912
913 MODULE_LICENSE("GPL");
Compression patch for TCP for Linux kernel