Merge ../linux-2.6
[linux-2.6.git] / drivers / scsi / hptiop.c
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, struct pt_regs *regs)
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");