Version:  2.0.40 2.2.26 2.4.37 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17

Linux/drivers/scsi/hptiop.c

  1 /*
  2  * HighPoint RR3xxx/4xxx controller driver for Linux
  3  * Copyright (C) 2006-2012 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/gfp.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/4xxx Controller Driver");
 42 
 43 static char driver_name[] = "hptiop";
 44 static const char driver_name_long[] = "RocketRAID 3xxx/4xxx Controller driver";
 45 static const char driver_ver[] = "v1.8";
 46 
 47 static int iop_send_sync_msg(struct hptiop_hba *hba, u32 msg, u32 millisec);
 48 static void hptiop_finish_scsi_req(struct hptiop_hba *hba, u32 tag,
 49                                 struct hpt_iop_request_scsi_command *req);
 50 static void hptiop_host_request_callback_itl(struct hptiop_hba *hba, u32 tag);
 51 static void hptiop_iop_request_callback_itl(struct hptiop_hba *hba, u32 tag);
 52 static void hptiop_message_callback(struct hptiop_hba *hba, u32 msg);
 53 
 54 static int iop_wait_ready_itl(struct hptiop_hba *hba, u32 millisec)
 55 {
 56         u32 req = 0;
 57         int i;
 58 
 59         for (i = 0; i < millisec; i++) {
 60                 req = readl(&hba->u.itl.iop->inbound_queue);
 61                 if (req != IOPMU_QUEUE_EMPTY)
 62                         break;
 63                 msleep(1);
 64         }
 65 
 66         if (req != IOPMU_QUEUE_EMPTY) {
 67                 writel(req, &hba->u.itl.iop->outbound_queue);
 68                 readl(&hba->u.itl.iop->outbound_intstatus);
 69                 return 0;
 70         }
 71 
 72         return -1;
 73 }
 74 
 75 static int iop_wait_ready_mv(struct hptiop_hba *hba, u32 millisec)
 76 {
 77         return iop_send_sync_msg(hba, IOPMU_INBOUND_MSG0_NOP, millisec);
 78 }
 79 
 80 static int iop_wait_ready_mvfrey(struct hptiop_hba *hba, u32 millisec)
 81 {
 82         return iop_send_sync_msg(hba, IOPMU_INBOUND_MSG0_NOP, millisec);
 83 }
 84 
 85 static void hptiop_request_callback_itl(struct hptiop_hba *hba, u32 tag)
 86 {
 87         if (tag & IOPMU_QUEUE_ADDR_HOST_BIT)
 88                 hptiop_host_request_callback_itl(hba,
 89                                 tag & ~IOPMU_QUEUE_ADDR_HOST_BIT);
 90         else
 91                 hptiop_iop_request_callback_itl(hba, tag);
 92 }
 93 
 94 static void hptiop_drain_outbound_queue_itl(struct hptiop_hba *hba)
 95 {
 96         u32 req;
 97 
 98         while ((req = readl(&hba->u.itl.iop->outbound_queue)) !=
 99                                                 IOPMU_QUEUE_EMPTY) {
100 
101                 if (req & IOPMU_QUEUE_MASK_HOST_BITS)
102                         hptiop_request_callback_itl(hba, req);
103                 else {
104                         struct hpt_iop_request_header __iomem * p;
105 
106                         p = (struct hpt_iop_request_header __iomem *)
107                                 ((char __iomem *)hba->u.itl.iop + req);
108 
109                         if (readl(&p->flags) & IOP_REQUEST_FLAG_SYNC_REQUEST) {
110                                 if (readl(&p->context))
111                                         hptiop_request_callback_itl(hba, req);
112                                 else
113                                         writel(1, &p->context);
114                         }
115                         else
116                                 hptiop_request_callback_itl(hba, req);
117                 }
118         }
119 }
120 
121 static int iop_intr_itl(struct hptiop_hba *hba)
122 {
123         struct hpt_iopmu_itl __iomem *iop = hba->u.itl.iop;
124         void __iomem *plx = hba->u.itl.plx;
125         u32 status;
126         int ret = 0;
127 
128         if (plx && readl(plx + 0x11C5C) & 0xf)
129                 writel(1, plx + 0x11C60);
130 
131         status = readl(&iop->outbound_intstatus);
132 
133         if (status & IOPMU_OUTBOUND_INT_MSG0) {
134                 u32 msg = readl(&iop->outbound_msgaddr0);
135 
136                 dprintk("received outbound msg %x\n", msg);
137                 writel(IOPMU_OUTBOUND_INT_MSG0, &iop->outbound_intstatus);
138                 hptiop_message_callback(hba, msg);
139                 ret = 1;
140         }
141 
142         if (status & IOPMU_OUTBOUND_INT_POSTQUEUE) {
143                 hptiop_drain_outbound_queue_itl(hba);
144                 ret = 1;
145         }
146 
147         return ret;
148 }
149 
150 static u64 mv_outbound_read(struct hpt_iopmu_mv __iomem *mu)
151 {
152         u32 outbound_tail = readl(&mu->outbound_tail);
153         u32 outbound_head = readl(&mu->outbound_head);
154 
155         if (outbound_tail != outbound_head) {
156                 u64 p;
157 
158                 memcpy_fromio(&p, &mu->outbound_q[mu->outbound_tail], 8);
159                 outbound_tail++;
160 
161                 if (outbound_tail == MVIOP_QUEUE_LEN)
162                         outbound_tail = 0;
163                 writel(outbound_tail, &mu->outbound_tail);
164                 return p;
165         } else
166                 return 0;
167 }
168 
169 static void mv_inbound_write(u64 p, struct hptiop_hba *hba)
170 {
171         u32 inbound_head = readl(&hba->u.mv.mu->inbound_head);
172         u32 head = inbound_head + 1;
173 
174         if (head == MVIOP_QUEUE_LEN)
175                 head = 0;
176 
177         memcpy_toio(&hba->u.mv.mu->inbound_q[inbound_head], &p, 8);
178         writel(head, &hba->u.mv.mu->inbound_head);
179         writel(MVIOP_MU_INBOUND_INT_POSTQUEUE,
180                         &hba->u.mv.regs->inbound_doorbell);
181 }
182 
183 static void hptiop_request_callback_mv(struct hptiop_hba *hba, u64 tag)
184 {
185         u32 req_type = (tag >> 5) & 0x7;
186         struct hpt_iop_request_scsi_command *req;
187 
188         dprintk("hptiop_request_callback_mv: tag=%llx\n", tag);
189 
190         BUG_ON((tag & MVIOP_MU_QUEUE_REQUEST_RETURN_CONTEXT) == 0);
191 
192         switch (req_type) {
193         case IOP_REQUEST_TYPE_GET_CONFIG:
194         case IOP_REQUEST_TYPE_SET_CONFIG:
195                 hba->msg_done = 1;
196                 break;
197 
198         case IOP_REQUEST_TYPE_SCSI_COMMAND:
199                 req = hba->reqs[tag >> 8].req_virt;
200                 if (likely(tag & MVIOP_MU_QUEUE_REQUEST_RESULT_BIT))
201                         req->header.result = cpu_to_le32(IOP_RESULT_SUCCESS);
202 
203                 hptiop_finish_scsi_req(hba, tag>>8, req);
204                 break;
205 
206         default:
207                 break;
208         }
209 }
210 
211 static int iop_intr_mv(struct hptiop_hba *hba)
212 {
213         u32 status;
214         int ret = 0;
215 
216         status = readl(&hba->u.mv.regs->outbound_doorbell);
217         writel(~status, &hba->u.mv.regs->outbound_doorbell);
218 
219         if (status & MVIOP_MU_OUTBOUND_INT_MSG) {
220                 u32 msg;
221                 msg = readl(&hba->u.mv.mu->outbound_msg);
222                 dprintk("received outbound msg %x\n", msg);
223                 hptiop_message_callback(hba, msg);
224                 ret = 1;
225         }
226 
227         if (status & MVIOP_MU_OUTBOUND_INT_POSTQUEUE) {
228                 u64 tag;
229 
230                 while ((tag = mv_outbound_read(hba->u.mv.mu)))
231                         hptiop_request_callback_mv(hba, tag);
232                 ret = 1;
233         }
234 
235         return ret;
236 }
237 
238 static void hptiop_request_callback_mvfrey(struct hptiop_hba *hba, u32 _tag)
239 {
240         u32 req_type = _tag & 0xf;
241         struct hpt_iop_request_scsi_command *req;
242 
243         switch (req_type) {
244         case IOP_REQUEST_TYPE_GET_CONFIG:
245         case IOP_REQUEST_TYPE_SET_CONFIG:
246                 hba->msg_done = 1;
247                 break;
248 
249         case IOP_REQUEST_TYPE_SCSI_COMMAND:
250                 req = hba->reqs[(_tag >> 4) & 0xff].req_virt;
251                 if (likely(_tag & IOPMU_QUEUE_REQUEST_RESULT_BIT))
252                         req->header.result = IOP_RESULT_SUCCESS;
253                 hptiop_finish_scsi_req(hba, (_tag >> 4) & 0xff, req);
254                 break;
255 
256         default:
257                 break;
258         }
259 }
260 
261 static int iop_intr_mvfrey(struct hptiop_hba *hba)
262 {
263         u32 _tag, status, cptr, cur_rptr;
264         int ret = 0;
265 
266         if (hba->initialized)
267                 writel(0, &(hba->u.mvfrey.mu->pcie_f0_int_enable));
268 
269         status = readl(&(hba->u.mvfrey.mu->f0_doorbell));
270         if (status) {
271                 writel(status, &(hba->u.mvfrey.mu->f0_doorbell));
272                 if (status & CPU_TO_F0_DRBL_MSG_BIT) {
273                         u32 msg = readl(&(hba->u.mvfrey.mu->cpu_to_f0_msg_a));
274                         dprintk("received outbound msg %x\n", msg);
275                         hptiop_message_callback(hba, msg);
276                 }
277                 ret = 1;
278         }
279 
280         status = readl(&(hba->u.mvfrey.mu->isr_cause));
281         if (status) {
282                 writel(status, &(hba->u.mvfrey.mu->isr_cause));
283                 do {
284                         cptr = *hba->u.mvfrey.outlist_cptr & 0xff;
285                         cur_rptr = hba->u.mvfrey.outlist_rptr;
286                         while (cur_rptr != cptr) {
287                                 cur_rptr++;
288                                 if (cur_rptr == hba->u.mvfrey.list_count)
289                                         cur_rptr = 0;
290 
291                                 _tag = hba->u.mvfrey.outlist[cur_rptr].val;
292                                 BUG_ON(!(_tag & IOPMU_QUEUE_MASK_HOST_BITS));
293                                 hptiop_request_callback_mvfrey(hba, _tag);
294                                 ret = 1;
295                         }
296                         hba->u.mvfrey.outlist_rptr = cur_rptr;
297                 } while (cptr != (*hba->u.mvfrey.outlist_cptr & 0xff));
298         }
299 
300         if (hba->initialized)
301                 writel(0x1010, &(hba->u.mvfrey.mu->pcie_f0_int_enable));
302 
303         return ret;
304 }
305 
306 static int iop_send_sync_request_itl(struct hptiop_hba *hba,
307                                         void __iomem *_req, u32 millisec)
308 {
309         struct hpt_iop_request_header __iomem *req = _req;
310         u32 i;
311 
312         writel(readl(&req->flags) | IOP_REQUEST_FLAG_SYNC_REQUEST, &req->flags);
313         writel(0, &req->context);
314         writel((unsigned long)req - (unsigned long)hba->u.itl.iop,
315                         &hba->u.itl.iop->inbound_queue);
316         readl(&hba->u.itl.iop->outbound_intstatus);
317 
318         for (i = 0; i < millisec; i++) {
319                 iop_intr_itl(hba);
320                 if (readl(&req->context))
321                         return 0;
322                 msleep(1);
323         }
324 
325         return -1;
326 }
327 
328 static int iop_send_sync_request_mv(struct hptiop_hba *hba,
329                                         u32 size_bits, u32 millisec)
330 {
331         struct hpt_iop_request_header *reqhdr = hba->u.mv.internal_req;
332         u32 i;
333 
334         hba->msg_done = 0;
335         reqhdr->flags |= cpu_to_le32(IOP_REQUEST_FLAG_SYNC_REQUEST);
336         mv_inbound_write(hba->u.mv.internal_req_phy |
337                         MVIOP_MU_QUEUE_ADDR_HOST_BIT | size_bits, hba);
338 
339         for (i = 0; i < millisec; i++) {
340                 iop_intr_mv(hba);
341                 if (hba->msg_done)
342                         return 0;
343                 msleep(1);
344         }
345         return -1;
346 }
347 
348 static int iop_send_sync_request_mvfrey(struct hptiop_hba *hba,
349                                         u32 size_bits, u32 millisec)
350 {
351         struct hpt_iop_request_header *reqhdr =
352                 hba->u.mvfrey.internal_req.req_virt;
353         u32 i;
354 
355         hba->msg_done = 0;
356         reqhdr->flags |= cpu_to_le32(IOP_REQUEST_FLAG_SYNC_REQUEST);
357         hba->ops->post_req(hba, &(hba->u.mvfrey.internal_req));
358 
359         for (i = 0; i < millisec; i++) {
360                 iop_intr_mvfrey(hba);
361                 if (hba->msg_done)
362                         break;
363                 msleep(1);
364         }
365         return hba->msg_done ? 0 : -1;
366 }
367 
368 static void hptiop_post_msg_itl(struct hptiop_hba *hba, u32 msg)
369 {
370         writel(msg, &hba->u.itl.iop->inbound_msgaddr0);
371         readl(&hba->u.itl.iop->outbound_intstatus);
372 }
373 
374 static void hptiop_post_msg_mv(struct hptiop_hba *hba, u32 msg)
375 {
376         writel(msg, &hba->u.mv.mu->inbound_msg);
377         writel(MVIOP_MU_INBOUND_INT_MSG, &hba->u.mv.regs->inbound_doorbell);
378         readl(&hba->u.mv.regs->inbound_doorbell);
379 }
380 
381 static void hptiop_post_msg_mvfrey(struct hptiop_hba *hba, u32 msg)
382 {
383         writel(msg, &(hba->u.mvfrey.mu->f0_to_cpu_msg_a));
384         readl(&(hba->u.mvfrey.mu->f0_to_cpu_msg_a));
385 }
386 
387 static int iop_send_sync_msg(struct hptiop_hba *hba, u32 msg, u32 millisec)
388 {
389         u32 i;
390 
391         hba->msg_done = 0;
392         hba->ops->disable_intr(hba);
393         hba->ops->post_msg(hba, msg);
394 
395         for (i = 0; i < millisec; i++) {
396                 spin_lock_irq(hba->host->host_lock);
397                 hba->ops->iop_intr(hba);
398                 spin_unlock_irq(hba->host->host_lock);
399                 if (hba->msg_done)
400                         break;
401                 msleep(1);
402         }
403 
404         hba->ops->enable_intr(hba);
405         return hba->msg_done? 0 : -1;
406 }
407 
408 static int iop_get_config_itl(struct hptiop_hba *hba,
409                                 struct hpt_iop_request_get_config *config)
410 {
411         u32 req32;
412         struct hpt_iop_request_get_config __iomem *req;
413 
414         req32 = readl(&hba->u.itl.iop->inbound_queue);
415         if (req32 == IOPMU_QUEUE_EMPTY)
416                 return -1;
417 
418         req = (struct hpt_iop_request_get_config __iomem *)
419                         ((unsigned long)hba->u.itl.iop + req32);
420 
421         writel(0, &req->header.flags);
422         writel(IOP_REQUEST_TYPE_GET_CONFIG, &req->header.type);
423         writel(sizeof(struct hpt_iop_request_get_config), &req->header.size);
424         writel(IOP_RESULT_PENDING, &req->header.result);
425 
426         if (iop_send_sync_request_itl(hba, req, 20000)) {
427                 dprintk("Get config send cmd failed\n");
428                 return -1;
429         }
430 
431         memcpy_fromio(config, req, sizeof(*config));
432         writel(req32, &hba->u.itl.iop->outbound_queue);
433         return 0;
434 }
435 
436 static int iop_get_config_mv(struct hptiop_hba *hba,
437                                 struct hpt_iop_request_get_config *config)
438 {
439         struct hpt_iop_request_get_config *req = hba->u.mv.internal_req;
440 
441         req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
442         req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_GET_CONFIG);
443         req->header.size =
444                 cpu_to_le32(sizeof(struct hpt_iop_request_get_config));
445         req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
446         req->header.context = cpu_to_le32(IOP_REQUEST_TYPE_GET_CONFIG<<5);
447         req->header.context_hi32 = 0;
448 
449         if (iop_send_sync_request_mv(hba, 0, 20000)) {
450                 dprintk("Get config send cmd failed\n");
451                 return -1;
452         }
453 
454         memcpy(config, req, sizeof(struct hpt_iop_request_get_config));
455         return 0;
456 }
457 
458 static int iop_get_config_mvfrey(struct hptiop_hba *hba,
459                                 struct hpt_iop_request_get_config *config)
460 {
461         struct hpt_iop_request_get_config *info = hba->u.mvfrey.config;
462 
463         if (info->header.size != sizeof(struct hpt_iop_request_get_config) ||
464                         info->header.type != IOP_REQUEST_TYPE_GET_CONFIG)
465                 return -1;
466 
467         config->interface_version = info->interface_version;
468         config->firmware_version = info->firmware_version;
469         config->max_requests = info->max_requests;
470         config->request_size = info->request_size;
471         config->max_sg_count = info->max_sg_count;
472         config->data_transfer_length = info->data_transfer_length;
473         config->alignment_mask = info->alignment_mask;
474         config->max_devices = info->max_devices;
475         config->sdram_size = info->sdram_size;
476 
477         return 0;
478 }
479 
480 static int iop_set_config_itl(struct hptiop_hba *hba,
481                                 struct hpt_iop_request_set_config *config)
482 {
483         u32 req32;
484         struct hpt_iop_request_set_config __iomem *req;
485 
486         req32 = readl(&hba->u.itl.iop->inbound_queue);
487         if (req32 == IOPMU_QUEUE_EMPTY)
488                 return -1;
489 
490         req = (struct hpt_iop_request_set_config __iomem *)
491                         ((unsigned long)hba->u.itl.iop + req32);
492 
493         memcpy_toio((u8 __iomem *)req + sizeof(struct hpt_iop_request_header),
494                 (u8 *)config + sizeof(struct hpt_iop_request_header),
495                 sizeof(struct hpt_iop_request_set_config) -
496                         sizeof(struct hpt_iop_request_header));
497 
498         writel(0, &req->header.flags);
499         writel(IOP_REQUEST_TYPE_SET_CONFIG, &req->header.type);
500         writel(sizeof(struct hpt_iop_request_set_config), &req->header.size);
501         writel(IOP_RESULT_PENDING, &req->header.result);
502 
503         if (iop_send_sync_request_itl(hba, req, 20000)) {
504                 dprintk("Set config send cmd failed\n");
505                 return -1;
506         }
507 
508         writel(req32, &hba->u.itl.iop->outbound_queue);
509         return 0;
510 }
511 
512 static int iop_set_config_mv(struct hptiop_hba *hba,
513                                 struct hpt_iop_request_set_config *config)
514 {
515         struct hpt_iop_request_set_config *req = hba->u.mv.internal_req;
516 
517         memcpy(req, config, sizeof(struct hpt_iop_request_set_config));
518         req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
519         req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_SET_CONFIG);
520         req->header.size =
521                 cpu_to_le32(sizeof(struct hpt_iop_request_set_config));
522         req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
523         req->header.context = cpu_to_le32(IOP_REQUEST_TYPE_SET_CONFIG<<5);
524         req->header.context_hi32 = 0;
525 
526         if (iop_send_sync_request_mv(hba, 0, 20000)) {
527                 dprintk("Set config send cmd failed\n");
528                 return -1;
529         }
530 
531         return 0;
532 }
533 
534 static int iop_set_config_mvfrey(struct hptiop_hba *hba,
535                                 struct hpt_iop_request_set_config *config)
536 {
537         struct hpt_iop_request_set_config *req =
538                 hba->u.mvfrey.internal_req.req_virt;
539 
540         memcpy(req, config, sizeof(struct hpt_iop_request_set_config));
541         req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
542         req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_SET_CONFIG);
543         req->header.size =
544                 cpu_to_le32(sizeof(struct hpt_iop_request_set_config));
545         req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
546         req->header.context = cpu_to_le32(IOP_REQUEST_TYPE_SET_CONFIG<<5);
547         req->header.context_hi32 = 0;
548 
549         if (iop_send_sync_request_mvfrey(hba, 0, 20000)) {
550                 dprintk("Set config send cmd failed\n");
551                 return -1;
552         }
553 
554         return 0;
555 }
556 
557 static void hptiop_enable_intr_itl(struct hptiop_hba *hba)
558 {
559         writel(~(IOPMU_OUTBOUND_INT_POSTQUEUE | IOPMU_OUTBOUND_INT_MSG0),
560                 &hba->u.itl.iop->outbound_intmask);
561 }
562 
563 static void hptiop_enable_intr_mv(struct hptiop_hba *hba)
564 {
565         writel(MVIOP_MU_OUTBOUND_INT_POSTQUEUE | MVIOP_MU_OUTBOUND_INT_MSG,
566                 &hba->u.mv.regs->outbound_intmask);
567 }
568 
569 static void hptiop_enable_intr_mvfrey(struct hptiop_hba *hba)
570 {
571         writel(CPU_TO_F0_DRBL_MSG_BIT, &(hba->u.mvfrey.mu->f0_doorbell_enable));
572         writel(0x1, &(hba->u.mvfrey.mu->isr_enable));
573         writel(0x1010, &(hba->u.mvfrey.mu->pcie_f0_int_enable));
574 }
575 
576 static int hptiop_initialize_iop(struct hptiop_hba *hba)
577 {
578         /* enable interrupts */
579         hba->ops->enable_intr(hba);
580 
581         hba->initialized = 1;
582 
583         /* start background tasks */
584         if (iop_send_sync_msg(hba,
585                         IOPMU_INBOUND_MSG0_START_BACKGROUND_TASK, 5000)) {
586                 printk(KERN_ERR "scsi%d: fail to start background task\n",
587                         hba->host->host_no);
588                 return -1;
589         }
590         return 0;
591 }
592 
593 static void __iomem *hptiop_map_pci_bar(struct hptiop_hba *hba, int index)
594 {
595         u32 mem_base_phy, length;
596         void __iomem *mem_base_virt;
597 
598         struct pci_dev *pcidev = hba->pcidev;
599 
600 
601         if (!(pci_resource_flags(pcidev, index) & IORESOURCE_MEM)) {
602                 printk(KERN_ERR "scsi%d: pci resource invalid\n",
603                                 hba->host->host_no);
604                 return NULL;
605         }
606 
607         mem_base_phy = pci_resource_start(pcidev, index);
608         length = pci_resource_len(pcidev, index);
609         mem_base_virt = ioremap(mem_base_phy, length);
610 
611         if (!mem_base_virt) {
612                 printk(KERN_ERR "scsi%d: Fail to ioremap memory space\n",
613                                 hba->host->host_no);
614                 return NULL;
615         }
616         return mem_base_virt;
617 }
618 
619 static int hptiop_map_pci_bar_itl(struct hptiop_hba *hba)
620 {
621         struct pci_dev *pcidev = hba->pcidev;
622         hba->u.itl.iop = hptiop_map_pci_bar(hba, 0);
623         if (hba->u.itl.iop == NULL)
624                 return -1;
625         if ((pcidev->device & 0xff00) == 0x4400) {
626                 hba->u.itl.plx = hba->u.itl.iop;
627                 hba->u.itl.iop = hptiop_map_pci_bar(hba, 2);
628                 if (hba->u.itl.iop == NULL) {
629                         iounmap(hba->u.itl.plx);
630                         return -1;
631                 }
632         }
633         return 0;
634 }
635 
636 static void hptiop_unmap_pci_bar_itl(struct hptiop_hba *hba)
637 {
638         if (hba->u.itl.plx)
639                 iounmap(hba->u.itl.plx);
640         iounmap(hba->u.itl.iop);
641 }
642 
643 static int hptiop_map_pci_bar_mv(struct hptiop_hba *hba)
644 {
645         hba->u.mv.regs = hptiop_map_pci_bar(hba, 0);
646         if (hba->u.mv.regs == NULL)
647                 return -1;
648 
649         hba->u.mv.mu = hptiop_map_pci_bar(hba, 2);
650         if (hba->u.mv.mu == NULL) {
651                 iounmap(hba->u.mv.regs);
652                 return -1;
653         }
654 
655         return 0;
656 }
657 
658 static int hptiop_map_pci_bar_mvfrey(struct hptiop_hba *hba)
659 {
660         hba->u.mvfrey.config = hptiop_map_pci_bar(hba, 0);
661         if (hba->u.mvfrey.config == NULL)
662                 return -1;
663 
664         hba->u.mvfrey.mu = hptiop_map_pci_bar(hba, 2);
665         if (hba->u.mvfrey.mu == NULL) {
666                 iounmap(hba->u.mvfrey.config);
667                 return -1;
668         }
669 
670         return 0;
671 }
672 
673 static void hptiop_unmap_pci_bar_mv(struct hptiop_hba *hba)
674 {
675         iounmap(hba->u.mv.regs);
676         iounmap(hba->u.mv.mu);
677 }
678 
679 static void hptiop_unmap_pci_bar_mvfrey(struct hptiop_hba *hba)
680 {
681         iounmap(hba->u.mvfrey.config);
682         iounmap(hba->u.mvfrey.mu);
683 }
684 
685 static void hptiop_message_callback(struct hptiop_hba *hba, u32 msg)
686 {
687         dprintk("iop message 0x%x\n", msg);
688 
689         if (msg == IOPMU_INBOUND_MSG0_NOP ||
690                 msg == IOPMU_INBOUND_MSG0_RESET_COMM)
691                 hba->msg_done = 1;
692 
693         if (!hba->initialized)
694                 return;
695 
696         if (msg == IOPMU_INBOUND_MSG0_RESET) {
697                 atomic_set(&hba->resetting, 0);
698                 wake_up(&hba->reset_wq);
699         }
700         else if (msg <= IOPMU_INBOUND_MSG0_MAX)
701                 hba->msg_done = 1;
702 }
703 
704 static struct hptiop_request *get_req(struct hptiop_hba *hba)
705 {
706         struct hptiop_request *ret;
707 
708         dprintk("get_req : req=%p\n", hba->req_list);
709 
710         ret = hba->req_list;
711         if (ret)
712                 hba->req_list = ret->next;
713 
714         return ret;
715 }
716 
717 static void free_req(struct hptiop_hba *hba, struct hptiop_request *req)
718 {
719         dprintk("free_req(%d, %p)\n", req->index, req);
720         req->next = hba->req_list;
721         hba->req_list = req;
722 }
723 
724 static void hptiop_finish_scsi_req(struct hptiop_hba *hba, u32 tag,
725                                 struct hpt_iop_request_scsi_command *req)
726 {
727         struct scsi_cmnd *scp;
728 
729         dprintk("hptiop_finish_scsi_req: req=%p, type=%d, "
730                         "result=%d, context=0x%x tag=%d\n",
731                         req, req->header.type, req->header.result,
732                         req->header.context, tag);
733 
734         BUG_ON(!req->header.result);
735         BUG_ON(req->header.type != cpu_to_le32(IOP_REQUEST_TYPE_SCSI_COMMAND));
736 
737         scp = hba->reqs[tag].scp;
738 
739         if (HPT_SCP(scp)->mapped)
740                 scsi_dma_unmap(scp);
741 
742         switch (le32_to_cpu(req->header.result)) {
743         case IOP_RESULT_SUCCESS:
744                 scsi_set_resid(scp,
745                         scsi_bufflen(scp) - le32_to_cpu(req->dataxfer_length));
746                 scp->result = (DID_OK<<16);
747                 break;
748         case IOP_RESULT_BAD_TARGET:
749                 scp->result = (DID_BAD_TARGET<<16);
750                 break;
751         case IOP_RESULT_BUSY:
752                 scp->result = (DID_BUS_BUSY<<16);
753                 break;
754         case IOP_RESULT_RESET:
755                 scp->result = (DID_RESET<<16);
756                 break;
757         case IOP_RESULT_FAIL:
758                 scp->result = (DID_ERROR<<16);
759                 break;
760         case IOP_RESULT_INVALID_REQUEST:
761                 scp->result = (DID_ABORT<<16);
762                 break;
763         case IOP_RESULT_CHECK_CONDITION:
764                 scsi_set_resid(scp,
765                         scsi_bufflen(scp) - le32_to_cpu(req->dataxfer_length));
766                 scp->result = SAM_STAT_CHECK_CONDITION;
767                 memcpy(scp->sense_buffer, &req->sg_list,
768                                 min_t(size_t, SCSI_SENSE_BUFFERSIZE,
769                                         le32_to_cpu(req->dataxfer_length)));
770                 goto skip_resid;
771                 break;
772 
773         default:
774                 scp->result = DRIVER_INVALID << 24 | DID_ABORT << 16;
775                 break;
776         }
777 
778         scsi_set_resid(scp,
779                 scsi_bufflen(scp) - le32_to_cpu(req->dataxfer_length));
780 
781 skip_resid:
782         dprintk("scsi_done(%p)\n", scp);
783         scp->scsi_done(scp);
784         free_req(hba, &hba->reqs[tag]);
785 }
786 
787 static void hptiop_host_request_callback_itl(struct hptiop_hba *hba, u32 _tag)
788 {
789         struct hpt_iop_request_scsi_command *req;
790         u32 tag;
791 
792         if (hba->iopintf_v2) {
793                 tag = _tag & ~IOPMU_QUEUE_REQUEST_RESULT_BIT;
794                 req = hba->reqs[tag].req_virt;
795                 if (likely(_tag & IOPMU_QUEUE_REQUEST_RESULT_BIT))
796                         req->header.result = cpu_to_le32(IOP_RESULT_SUCCESS);
797         } else {
798                 tag = _tag;
799                 req = hba->reqs[tag].req_virt;
800         }
801 
802         hptiop_finish_scsi_req(hba, tag, req);
803 }
804 
805 void hptiop_iop_request_callback_itl(struct hptiop_hba *hba, u32 tag)
806 {
807         struct hpt_iop_request_header __iomem *req;
808         struct hpt_iop_request_ioctl_command __iomem *p;
809         struct hpt_ioctl_k *arg;
810 
811         req = (struct hpt_iop_request_header __iomem *)
812                         ((unsigned long)hba->u.itl.iop + tag);
813         dprintk("hptiop_iop_request_callback_itl: req=%p, type=%d, "
814                         "result=%d, context=0x%x tag=%d\n",
815                         req, readl(&req->type), readl(&req->result),
816                         readl(&req->context), tag);
817 
818         BUG_ON(!readl(&req->result));
819         BUG_ON(readl(&req->type) != IOP_REQUEST_TYPE_IOCTL_COMMAND);
820 
821         p = (struct hpt_iop_request_ioctl_command __iomem *)req;
822         arg = (struct hpt_ioctl_k *)(unsigned long)
823                 (readl(&req->context) |
824                         ((u64)readl(&req->context_hi32)<<32));
825 
826         if (readl(&req->result) == IOP_RESULT_SUCCESS) {
827                 arg->result = HPT_IOCTL_RESULT_OK;
828 
829                 if (arg->outbuf_size)
830                         memcpy_fromio(arg->outbuf,
831                                 &p->buf[(readl(&p->inbuf_size) + 3)& ~3],
832                                 arg->outbuf_size);
833 
834                 if (arg->bytes_returned)
835                         *arg->bytes_returned = arg->outbuf_size;
836         }
837         else
838                 arg->result = HPT_IOCTL_RESULT_FAILED;
839 
840         arg->done(arg);
841         writel(tag, &hba->u.itl.iop->outbound_queue);
842 }
843 
844 static irqreturn_t hptiop_intr(int irq, void *dev_id)
845 {
846         struct hptiop_hba  *hba = dev_id;
847         int  handled;
848         unsigned long flags;
849 
850         spin_lock_irqsave(hba->host->host_lock, flags);
851         handled = hba->ops->iop_intr(hba);
852         spin_unlock_irqrestore(hba->host->host_lock, flags);
853 
854         return handled;
855 }
856 
857 static int hptiop_buildsgl(struct scsi_cmnd *scp, struct hpt_iopsg *psg)
858 {
859         struct Scsi_Host *host = scp->device->host;
860         struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
861         struct scatterlist *sg;
862         int idx, nseg;
863 
864         nseg = scsi_dma_map(scp);
865         BUG_ON(nseg < 0);
866         if (!nseg)
867                 return 0;
868 
869         HPT_SCP(scp)->sgcnt = nseg;
870         HPT_SCP(scp)->mapped = 1;
871 
872         BUG_ON(HPT_SCP(scp)->sgcnt > hba->max_sg_descriptors);
873 
874         scsi_for_each_sg(scp, sg, HPT_SCP(scp)->sgcnt, idx) {
875                 psg[idx].pci_address = cpu_to_le64(sg_dma_address(sg)) |
876                         hba->ops->host_phy_flag;
877                 psg[idx].size = cpu_to_le32(sg_dma_len(sg));
878                 psg[idx].eot = (idx == HPT_SCP(scp)->sgcnt - 1) ?
879                         cpu_to_le32(1) : 0;
880         }
881         return HPT_SCP(scp)->sgcnt;
882 }
883 
884 static void hptiop_post_req_itl(struct hptiop_hba *hba,
885                                         struct hptiop_request *_req)
886 {
887         struct hpt_iop_request_header *reqhdr = _req->req_virt;
888 
889         reqhdr->context = cpu_to_le32(IOPMU_QUEUE_ADDR_HOST_BIT |
890                                                         (u32)_req->index);
891         reqhdr->context_hi32 = 0;
892 
893         if (hba->iopintf_v2) {
894                 u32 size, size_bits;
895 
896                 size = le32_to_cpu(reqhdr->size);
897                 if (size < 256)
898                         size_bits = IOPMU_QUEUE_REQUEST_SIZE_BIT;
899                 else if (size < 512)
900                         size_bits = IOPMU_QUEUE_ADDR_HOST_BIT;
901                 else
902                         size_bits = IOPMU_QUEUE_REQUEST_SIZE_BIT |
903                                                 IOPMU_QUEUE_ADDR_HOST_BIT;
904                 writel(_req->req_shifted_phy | size_bits,
905                         &hba->u.itl.iop->inbound_queue);
906         } else
907                 writel(_req->req_shifted_phy | IOPMU_QUEUE_ADDR_HOST_BIT,
908                                         &hba->u.itl.iop->inbound_queue);
909 }
910 
911 static void hptiop_post_req_mv(struct hptiop_hba *hba,
912                                         struct hptiop_request *_req)
913 {
914         struct hpt_iop_request_header *reqhdr = _req->req_virt;
915         u32 size, size_bit;
916 
917         reqhdr->context = cpu_to_le32(_req->index<<8 |
918                                         IOP_REQUEST_TYPE_SCSI_COMMAND<<5);
919         reqhdr->context_hi32 = 0;
920         size = le32_to_cpu(reqhdr->size);
921 
922         if (size <= 256)
923                 size_bit = 0;
924         else if (size <= 256*2)
925                 size_bit = 1;
926         else if (size <= 256*3)
927                 size_bit = 2;
928         else
929                 size_bit = 3;
930 
931         mv_inbound_write((_req->req_shifted_phy << 5) |
932                 MVIOP_MU_QUEUE_ADDR_HOST_BIT | size_bit, hba);
933 }
934 
935 static void hptiop_post_req_mvfrey(struct hptiop_hba *hba,
936                                         struct hptiop_request *_req)
937 {
938         struct hpt_iop_request_header *reqhdr = _req->req_virt;
939         u32 index;
940 
941         reqhdr->flags |= cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT |
942                         IOP_REQUEST_FLAG_ADDR_BITS |
943                         ((_req->req_shifted_phy >> 11) & 0xffff0000));
944         reqhdr->context = cpu_to_le32(IOPMU_QUEUE_ADDR_HOST_BIT |
945                         (_req->index << 4) | reqhdr->type);
946         reqhdr->context_hi32 = cpu_to_le32((_req->req_shifted_phy << 5) &
947                         0xffffffff);
948 
949         hba->u.mvfrey.inlist_wptr++;
950         index = hba->u.mvfrey.inlist_wptr & 0x3fff;
951 
952         if (index == hba->u.mvfrey.list_count) {
953                 index = 0;
954                 hba->u.mvfrey.inlist_wptr &= ~0x3fff;
955                 hba->u.mvfrey.inlist_wptr ^= CL_POINTER_TOGGLE;
956         }
957 
958         hba->u.mvfrey.inlist[index].addr =
959                         (dma_addr_t)_req->req_shifted_phy << 5;
960         hba->u.mvfrey.inlist[index].intrfc_len = (reqhdr->size + 3) / 4;
961         writel(hba->u.mvfrey.inlist_wptr,
962                 &(hba->u.mvfrey.mu->inbound_write_ptr));
963         readl(&(hba->u.mvfrey.mu->inbound_write_ptr));
964 }
965 
966 static int hptiop_reset_comm_itl(struct hptiop_hba *hba)
967 {
968         return 0;
969 }
970 
971 static int hptiop_reset_comm_mv(struct hptiop_hba *hba)
972 {
973         return 0;
974 }
975 
976 static int hptiop_reset_comm_mvfrey(struct hptiop_hba *hba)
977 {
978         u32 list_count = hba->u.mvfrey.list_count;
979 
980         if (iop_send_sync_msg(hba, IOPMU_INBOUND_MSG0_RESET_COMM, 3000))
981                 return -1;
982 
983         /* wait 100ms for MCU ready */
984         msleep(100);
985 
986         writel(cpu_to_le32(hba->u.mvfrey.inlist_phy & 0xffffffff),
987                         &(hba->u.mvfrey.mu->inbound_base));
988         writel(cpu_to_le32((hba->u.mvfrey.inlist_phy >> 16) >> 16),
989                         &(hba->u.mvfrey.mu->inbound_base_high));
990 
991         writel(cpu_to_le32(hba->u.mvfrey.outlist_phy & 0xffffffff),
992                         &(hba->u.mvfrey.mu->outbound_base));
993         writel(cpu_to_le32((hba->u.mvfrey.outlist_phy >> 16) >> 16),
994                         &(hba->u.mvfrey.mu->outbound_base_high));
995 
996         writel(cpu_to_le32(hba->u.mvfrey.outlist_cptr_phy & 0xffffffff),
997                         &(hba->u.mvfrey.mu->outbound_shadow_base));
998         writel(cpu_to_le32((hba->u.mvfrey.outlist_cptr_phy >> 16) >> 16),
999                         &(hba->u.mvfrey.mu->outbound_shadow_base_high));
1000 
1001         hba->u.mvfrey.inlist_wptr = (list_count - 1) | CL_POINTER_TOGGLE;
1002         *hba->u.mvfrey.outlist_cptr = (list_count - 1) | CL_POINTER_TOGGLE;
1003         hba->u.mvfrey.outlist_rptr = list_count - 1;
1004         return 0;
1005 }
1006 
1007 static int hptiop_queuecommand_lck(struct scsi_cmnd *scp,
1008                                 void (*done)(struct scsi_cmnd *))
1009 {
1010         struct Scsi_Host *host = scp->device->host;
1011         struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
1012         struct hpt_iop_request_scsi_command *req;
1013         int sg_count = 0;
1014         struct hptiop_request *_req;
1015 
1016         BUG_ON(!done);
1017         scp->scsi_done = done;
1018 
1019         _req = get_req(hba);
1020         if (_req == NULL) {
1021                 dprintk("hptiop_queuecmd : no free req\n");
1022                 return SCSI_MLQUEUE_HOST_BUSY;
1023         }
1024 
1025         _req->scp = scp;
1026 
1027         dprintk("hptiop_queuecmd(scp=%p) %d/%d/%d/%llu cdb=(%08x-%08x-%08x-%08x) "
1028                         "req_index=%d, req=%p\n",
1029                         scp,
1030                         host->host_no, scp->device->channel,
1031                         scp->device->id, scp->device->lun,
1032                         cpu_to_be32(((u32 *)scp->cmnd)[0]),
1033                         cpu_to_be32(((u32 *)scp->cmnd)[1]),
1034                         cpu_to_be32(((u32 *)scp->cmnd)[2]),
1035                         cpu_to_be32(((u32 *)scp->cmnd)[3]),
1036                         _req->index, _req->req_virt);
1037 
1038         scp->result = 0;
1039 
1040         if (scp->device->channel || scp->device->lun ||
1041                         scp->device->id > hba->max_devices) {
1042                 scp->result = DID_BAD_TARGET << 16;
1043                 free_req(hba, _req);
1044                 goto cmd_done;
1045         }
1046 
1047         req = _req->req_virt;
1048 
1049         /* build S/G table */
1050         sg_count = hptiop_buildsgl(scp, req->sg_list);
1051         if (!sg_count)
1052                 HPT_SCP(scp)->mapped = 0;
1053 
1054         req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
1055         req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_SCSI_COMMAND);
1056         req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
1057         req->dataxfer_length = cpu_to_le32(scsi_bufflen(scp));
1058         req->channel = scp->device->channel;
1059         req->target = scp->device->id;
1060         req->lun = scp->device->lun;
1061         req->header.size = cpu_to_le32(
1062                                 sizeof(struct hpt_iop_request_scsi_command)
1063                                  - sizeof(struct hpt_iopsg)
1064                                  + sg_count * sizeof(struct hpt_iopsg));
1065 
1066         memcpy(req->cdb, scp->cmnd, sizeof(req->cdb));
1067         hba->ops->post_req(hba, _req);
1068         return 0;
1069 
1070 cmd_done:
1071         dprintk("scsi_done(scp=%p)\n", scp);
1072         scp->scsi_done(scp);
1073         return 0;
1074 }
1075 
1076 static DEF_SCSI_QCMD(hptiop_queuecommand)
1077 
1078 static const char *hptiop_info(struct Scsi_Host *host)
1079 {
1080         return driver_name_long;
1081 }
1082 
1083 static int hptiop_reset_hba(struct hptiop_hba *hba)
1084 {
1085         if (atomic_xchg(&hba->resetting, 1) == 0) {
1086                 atomic_inc(&hba->reset_count);
1087                 hba->ops->post_msg(hba, IOPMU_INBOUND_MSG0_RESET);
1088         }
1089 
1090         wait_event_timeout(hba->reset_wq,
1091                         atomic_read(&hba->resetting) == 0, 60 * HZ);
1092 
1093         if (atomic_read(&hba->resetting)) {
1094                 /* IOP is in unknown state, abort reset */
1095                 printk(KERN_ERR "scsi%d: reset failed\n", hba->host->host_no);
1096                 return -1;
1097         }
1098 
1099         if (iop_send_sync_msg(hba,
1100                 IOPMU_INBOUND_MSG0_START_BACKGROUND_TASK, 5000)) {
1101                 dprintk("scsi%d: fail to start background task\n",
1102                                 hba->host->host_no);
1103         }
1104 
1105         return 0;
1106 }
1107 
1108 static int hptiop_reset(struct scsi_cmnd *scp)
1109 {
1110         struct Scsi_Host * host = scp->device->host;
1111         struct hptiop_hba * hba = (struct hptiop_hba *)host->hostdata;
1112 
1113         printk(KERN_WARNING "hptiop_reset(%d/%d/%d) scp=%p\n",
1114                         scp->device->host->host_no, scp->device->channel,
1115                         scp->device->id, scp);
1116 
1117         return hptiop_reset_hba(hba)? FAILED : SUCCESS;
1118 }
1119 
1120 static int hptiop_adjust_disk_queue_depth(struct scsi_device *sdev,
1121                                           int queue_depth, int reason)
1122 {
1123         struct hptiop_hba *hba = (struct hptiop_hba *)sdev->host->hostdata;
1124 
1125         if (reason != SCSI_QDEPTH_DEFAULT)
1126                 return -EOPNOTSUPP;
1127 
1128         if (queue_depth > hba->max_requests)
1129                 queue_depth = hba->max_requests;
1130         scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
1131         return queue_depth;
1132 }
1133 
1134 static ssize_t hptiop_show_version(struct device *dev,
1135                                    struct device_attribute *attr, char *buf)
1136 {
1137         return snprintf(buf, PAGE_SIZE, "%s\n", driver_ver);
1138 }
1139 
1140 static ssize_t hptiop_show_fw_version(struct device *dev,
1141                                       struct device_attribute *attr, char *buf)
1142 {
1143         struct Scsi_Host *host = class_to_shost(dev);
1144         struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
1145 
1146         return snprintf(buf, PAGE_SIZE, "%d.%d.%d.%d\n",
1147                                 hba->firmware_version >> 24,
1148                                 (hba->firmware_version >> 16) & 0xff,
1149                                 (hba->firmware_version >> 8) & 0xff,
1150                                 hba->firmware_version & 0xff);
1151 }
1152 
1153 static struct device_attribute hptiop_attr_version = {
1154         .attr = {
1155                 .name = "driver-version",
1156                 .mode = S_IRUGO,
1157         },
1158         .show = hptiop_show_version,
1159 };
1160 
1161 static struct device_attribute hptiop_attr_fw_version = {
1162         .attr = {
1163                 .name = "firmware-version",
1164                 .mode = S_IRUGO,
1165         },
1166         .show = hptiop_show_fw_version,
1167 };
1168 
1169 static struct device_attribute *hptiop_attrs[] = {
1170         &hptiop_attr_version,
1171         &hptiop_attr_fw_version,
1172         NULL
1173 };
1174 
1175 static struct scsi_host_template driver_template = {
1176         .module                     = THIS_MODULE,
1177         .name                       = driver_name,
1178         .queuecommand               = hptiop_queuecommand,
1179         .eh_device_reset_handler    = hptiop_reset,
1180         .eh_bus_reset_handler       = hptiop_reset,
1181         .info                       = hptiop_info,
1182         .emulated                   = 0,
1183         .use_clustering             = ENABLE_CLUSTERING,
1184         .proc_name                  = driver_name,
1185         .shost_attrs                = hptiop_attrs,
1186         .this_id                    = -1,
1187         .change_queue_depth         = hptiop_adjust_disk_queue_depth,
1188 };
1189 
1190 static int hptiop_internal_memalloc_itl(struct hptiop_hba *hba)
1191 {
1192         return 0;
1193 }
1194 
1195 static int hptiop_internal_memalloc_mv(struct hptiop_hba *hba)
1196 {
1197         hba->u.mv.internal_req = dma_alloc_coherent(&hba->pcidev->dev,
1198                         0x800, &hba->u.mv.internal_req_phy, GFP_KERNEL);
1199         if (hba->u.mv.internal_req)
1200                 return 0;
1201         else
1202                 return -1;
1203 }
1204 
1205 static int hptiop_internal_memalloc_mvfrey(struct hptiop_hba *hba)
1206 {
1207         u32 list_count = readl(&hba->u.mvfrey.mu->inbound_conf_ctl);
1208         char *p;
1209         dma_addr_t phy;
1210 
1211         BUG_ON(hba->max_request_size == 0);
1212 
1213         if (list_count == 0) {
1214                 BUG_ON(1);
1215                 return -1;
1216         }
1217 
1218         list_count >>= 16;
1219 
1220         hba->u.mvfrey.list_count = list_count;
1221         hba->u.mvfrey.internal_mem_size = 0x800 +
1222                         list_count * sizeof(struct mvfrey_inlist_entry) +
1223                         list_count * sizeof(struct mvfrey_outlist_entry) +
1224                         sizeof(int);
1225 
1226         p = dma_alloc_coherent(&hba->pcidev->dev,
1227                         hba->u.mvfrey.internal_mem_size, &phy, GFP_KERNEL);
1228         if (!p)
1229                 return -1;
1230 
1231         hba->u.mvfrey.internal_req.req_virt = p;
1232         hba->u.mvfrey.internal_req.req_shifted_phy = phy >> 5;
1233         hba->u.mvfrey.internal_req.scp = NULL;
1234         hba->u.mvfrey.internal_req.next = NULL;
1235 
1236         p += 0x800;
1237         phy += 0x800;
1238 
1239         hba->u.mvfrey.inlist = (struct mvfrey_inlist_entry *)p;
1240         hba->u.mvfrey.inlist_phy = phy;
1241 
1242         p += list_count * sizeof(struct mvfrey_inlist_entry);
1243         phy += list_count * sizeof(struct mvfrey_inlist_entry);
1244 
1245         hba->u.mvfrey.outlist = (struct mvfrey_outlist_entry *)p;
1246         hba->u.mvfrey.outlist_phy = phy;
1247 
1248         p += list_count * sizeof(struct mvfrey_outlist_entry);
1249         phy += list_count * sizeof(struct mvfrey_outlist_entry);
1250 
1251         hba->u.mvfrey.outlist_cptr = (__le32 *)p;
1252         hba->u.mvfrey.outlist_cptr_phy = phy;
1253 
1254         return 0;
1255 }
1256 
1257 static int hptiop_internal_memfree_itl(struct hptiop_hba *hba)
1258 {
1259         return 0;
1260 }
1261 
1262 static int hptiop_internal_memfree_mv(struct hptiop_hba *hba)
1263 {
1264         if (hba->u.mv.internal_req) {
1265                 dma_free_coherent(&hba->pcidev->dev, 0x800,
1266                         hba->u.mv.internal_req, hba->u.mv.internal_req_phy);
1267                 return 0;
1268         } else
1269                 return -1;
1270 }
1271 
1272 static int hptiop_internal_memfree_mvfrey(struct hptiop_hba *hba)
1273 {
1274         if (hba->u.mvfrey.internal_req.req_virt) {
1275                 dma_free_coherent(&hba->pcidev->dev,
1276                         hba->u.mvfrey.internal_mem_size,
1277                         hba->u.mvfrey.internal_req.req_virt,
1278                         (dma_addr_t)
1279                         hba->u.mvfrey.internal_req.req_shifted_phy << 5);
1280                 return 0;
1281         } else
1282                 return -1;
1283 }
1284 
1285 static int hptiop_probe(struct pci_dev *pcidev, const struct pci_device_id *id)
1286 {
1287         struct Scsi_Host *host = NULL;
1288         struct hptiop_hba *hba;
1289         struct hptiop_adapter_ops *iop_ops;
1290         struct hpt_iop_request_get_config iop_config;
1291         struct hpt_iop_request_set_config set_config;
1292         dma_addr_t start_phy;
1293         void *start_virt;
1294         u32 offset, i, req_size;
1295 
1296         dprintk("hptiop_probe(%p)\n", pcidev);
1297 
1298         if (pci_enable_device(pcidev)) {
1299                 printk(KERN_ERR "hptiop: fail to enable pci device\n");
1300                 return -ENODEV;
1301         }
1302 
1303         printk(KERN_INFO "adapter at PCI %d:%d:%d, IRQ %d\n",
1304                 pcidev->bus->number, pcidev->devfn >> 3, pcidev->devfn & 7,
1305                 pcidev->irq);
1306 
1307         pci_set_master(pcidev);
1308 
1309         /* Enable 64bit DMA if possible */
1310         iop_ops = (struct hptiop_adapter_ops *)id->driver_data;
1311         if (pci_set_dma_mask(pcidev, DMA_BIT_MASK(iop_ops->hw_dma_bit_mask))) {
1312                 if (pci_set_dma_mask(pcidev, DMA_BIT_MASK(32))) {
1313                         printk(KERN_ERR "hptiop: fail to set dma_mask\n");
1314                         goto disable_pci_device;
1315                 }
1316         }
1317 
1318         if (pci_request_regions(pcidev, driver_name)) {
1319                 printk(KERN_ERR "hptiop: pci_request_regions failed\n");
1320                 goto disable_pci_device;
1321         }
1322 
1323         host = scsi_host_alloc(&driver_template, sizeof(struct hptiop_hba));
1324         if (!host) {
1325                 printk(KERN_ERR "hptiop: fail to alloc scsi host\n");
1326                 goto free_pci_regions;
1327         }
1328 
1329         hba = (struct hptiop_hba *)host->hostdata;
1330 
1331         hba->ops = iop_ops;
1332         hba->pcidev = pcidev;
1333         hba->host = host;
1334         hba->initialized = 0;
1335         hba->iopintf_v2 = 0;
1336 
1337         atomic_set(&hba->resetting, 0);
1338         atomic_set(&hba->reset_count, 0);
1339 
1340         init_waitqueue_head(&hba->reset_wq);
1341         init_waitqueue_head(&hba->ioctl_wq);
1342 
1343         host->max_lun = 1;
1344         host->max_channel = 0;
1345         host->io_port = 0;
1346         host->n_io_port = 0;
1347         host->irq = pcidev->irq;
1348 
1349         if (hba->ops->map_pci_bar(hba))
1350                 goto free_scsi_host;
1351 
1352         if (hba->ops->iop_wait_ready(hba, 20000)) {
1353                 printk(KERN_ERR "scsi%d: firmware not ready\n",
1354                                 hba->host->host_no);
1355                 goto unmap_pci_bar;
1356         }
1357 
1358         if (hba->ops->family == MV_BASED_IOP) {
1359                 if (hba->ops->internal_memalloc(hba)) {
1360                         printk(KERN_ERR "scsi%d: internal_memalloc failed\n",
1361                                 hba->host->host_no);
1362                         goto unmap_pci_bar;
1363                 }
1364         }
1365 
1366         if (hba->ops->get_config(hba, &iop_config)) {
1367                 printk(KERN_ERR "scsi%d: get config failed\n",
1368                                 hba->host->host_no);
1369                 goto unmap_pci_bar;
1370         }
1371 
1372         hba->max_requests = min(le32_to_cpu(iop_config.max_requests),
1373                                 HPTIOP_MAX_REQUESTS);
1374         hba->max_devices = le32_to_cpu(iop_config.max_devices);
1375         hba->max_request_size = le32_to_cpu(iop_config.request_size);
1376         hba->max_sg_descriptors = le32_to_cpu(iop_config.max_sg_count);
1377         hba->firmware_version = le32_to_cpu(iop_config.firmware_version);
1378         hba->interface_version = le32_to_cpu(iop_config.interface_version);
1379         hba->sdram_size = le32_to_cpu(iop_config.sdram_size);
1380 
1381         if (hba->ops->family == MVFREY_BASED_IOP) {
1382                 if (hba->ops->internal_memalloc(hba)) {
1383                         printk(KERN_ERR "scsi%d: internal_memalloc failed\n",
1384                                 hba->host->host_no);
1385                         goto unmap_pci_bar;
1386                 }
1387                 if (hba->ops->reset_comm(hba)) {
1388                         printk(KERN_ERR "scsi%d: reset comm failed\n",
1389                                         hba->host->host_no);
1390                         goto unmap_pci_bar;
1391                 }
1392         }
1393 
1394         if (hba->firmware_version > 0x01020000 ||
1395                         hba->interface_version > 0x01020000)
1396                 hba->iopintf_v2 = 1;
1397 
1398         host->max_sectors = le32_to_cpu(iop_config.data_transfer_length) >> 9;
1399         host->max_id = le32_to_cpu(iop_config.max_devices);
1400         host->sg_tablesize = le32_to_cpu(iop_config.max_sg_count);
1401         host->can_queue = le32_to_cpu(iop_config.max_requests);
1402         host->cmd_per_lun = le32_to_cpu(iop_config.max_requests);
1403         host->max_cmd_len = 16;
1404 
1405         req_size = sizeof(struct hpt_iop_request_scsi_command)
1406                 + sizeof(struct hpt_iopsg) * (hba->max_sg_descriptors - 1);
1407         if ((req_size & 0x1f) != 0)
1408                 req_size = (req_size + 0x1f) & ~0x1f;
1409 
1410         memset(&set_config, 0, sizeof(struct hpt_iop_request_set_config));
1411         set_config.iop_id = cpu_to_le32(host->host_no);
1412         set_config.vbus_id = cpu_to_le16(host->host_no);
1413         set_config.max_host_request_size = cpu_to_le16(req_size);
1414 
1415         if (hba->ops->set_config(hba, &set_config)) {
1416                 printk(KERN_ERR "scsi%d: set config failed\n",
1417                                 hba->host->host_no);
1418                 goto unmap_pci_bar;
1419         }
1420 
1421         pci_set_drvdata(pcidev, host);
1422 
1423         if (request_irq(pcidev->irq, hptiop_intr, IRQF_SHARED,
1424                                         driver_name, hba)) {
1425                 printk(KERN_ERR "scsi%d: request irq %d failed\n",
1426                                         hba->host->host_no, pcidev->irq);
1427                 goto unmap_pci_bar;
1428         }
1429 
1430         /* Allocate request mem */
1431 
1432         dprintk("req_size=%d, max_requests=%d\n", req_size, hba->max_requests);
1433 
1434         hba->req_size = req_size;
1435         start_virt = dma_alloc_coherent(&pcidev->dev,
1436                                 hba->req_size*hba->max_requests + 0x20,
1437                                 &start_phy, GFP_KERNEL);
1438 
1439         if (!start_virt) {
1440                 printk(KERN_ERR "scsi%d: fail to alloc request mem\n",
1441                                         hba->host->host_no);
1442                 goto free_request_irq;
1443         }
1444 
1445         hba->dma_coherent = start_virt;
1446         hba->dma_coherent_handle = start_phy;
1447 
1448         if ((start_phy & 0x1f) != 0) {
1449                 offset = ((start_phy + 0x1f) & ~0x1f) - start_phy;
1450                 start_phy += offset;
1451                 start_virt += offset;
1452         }
1453 
1454         hba->req_list = NULL;
1455         for (i = 0; i < hba->max_requests; i++) {
1456                 hba->reqs[i].next = NULL;
1457                 hba->reqs[i].req_virt = start_virt;
1458                 hba->reqs[i].req_shifted_phy = start_phy >> 5;
1459                 hba->reqs[i].index = i;
1460                 free_req(hba, &hba->reqs[i]);
1461                 start_virt = (char *)start_virt + hba->req_size;
1462                 start_phy = start_phy + hba->req_size;
1463         }
1464 
1465         /* Enable Interrupt and start background task */
1466         if (hptiop_initialize_iop(hba))
1467                 goto free_request_mem;
1468 
1469         if (scsi_add_host(host, &pcidev->dev)) {
1470                 printk(KERN_ERR "scsi%d: scsi_add_host failed\n",
1471                                         hba->host->host_no);
1472                 goto free_request_mem;
1473         }
1474 
1475         scsi_scan_host(host);
1476 
1477         dprintk("scsi%d: hptiop_probe successfully\n", hba->host->host_no);
1478         return 0;
1479 
1480 free_request_mem:
1481         dma_free_coherent(&hba->pcidev->dev,
1482                         hba->req_size * hba->max_requests + 0x20,
1483                         hba->dma_coherent, hba->dma_coherent_handle);
1484 
1485 free_request_irq:
1486         free_irq(hba->pcidev->irq, hba);
1487 
1488 unmap_pci_bar:
1489         hba->ops->internal_memfree(hba);
1490 
1491         hba->ops->unmap_pci_bar(hba);
1492 
1493 free_scsi_host:
1494         scsi_host_put(host);
1495 
1496 free_pci_regions:
1497         pci_release_regions(pcidev);
1498 
1499 disable_pci_device:
1500         pci_disable_device(pcidev);
1501 
1502         dprintk("scsi%d: hptiop_probe fail\n", host ? host->host_no : 0);
1503         return -ENODEV;
1504 }
1505 
1506 static void hptiop_shutdown(struct pci_dev *pcidev)
1507 {
1508         struct Scsi_Host *host = pci_get_drvdata(pcidev);
1509         struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
1510 
1511         dprintk("hptiop_shutdown(%p)\n", hba);
1512 
1513         /* stop the iop */
1514         if (iop_send_sync_msg(hba, IOPMU_INBOUND_MSG0_SHUTDOWN, 60000))
1515                 printk(KERN_ERR "scsi%d: shutdown the iop timeout\n",
1516                                         hba->host->host_no);
1517 
1518         /* disable all outbound interrupts */
1519         hba->ops->disable_intr(hba);
1520 }
1521 
1522 static void hptiop_disable_intr_itl(struct hptiop_hba *hba)
1523 {
1524         u32 int_mask;
1525 
1526         int_mask = readl(&hba->u.itl.iop->outbound_intmask);
1527         writel(int_mask |
1528                 IOPMU_OUTBOUND_INT_MSG0 | IOPMU_OUTBOUND_INT_POSTQUEUE,
1529                 &hba->u.itl.iop->outbound_intmask);
1530         readl(&hba->u.itl.iop->outbound_intmask);
1531 }
1532 
1533 static void hptiop_disable_intr_mv(struct hptiop_hba *hba)
1534 {
1535         writel(0, &hba->u.mv.regs->outbound_intmask);
1536         readl(&hba->u.mv.regs->outbound_intmask);
1537 }
1538 
1539 static void hptiop_disable_intr_mvfrey(struct hptiop_hba *hba)
1540 {
1541         writel(0, &(hba->u.mvfrey.mu->f0_doorbell_enable));
1542         readl(&(hba->u.mvfrey.mu->f0_doorbell_enable));
1543         writel(0, &(hba->u.mvfrey.mu->isr_enable));
1544         readl(&(hba->u.mvfrey.mu->isr_enable));
1545         writel(0, &(hba->u.mvfrey.mu->pcie_f0_int_enable));
1546         readl(&(hba->u.mvfrey.mu->pcie_f0_int_enable));
1547 }
1548 
1549 static void hptiop_remove(struct pci_dev *pcidev)
1550 {
1551         struct Scsi_Host *host = pci_get_drvdata(pcidev);
1552         struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
1553 
1554         dprintk("scsi%d: hptiop_remove\n", hba->host->host_no);
1555 
1556         scsi_remove_host(host);
1557 
1558         hptiop_shutdown(pcidev);
1559 
1560         free_irq(hba->pcidev->irq, hba);
1561 
1562         dma_free_coherent(&hba->pcidev->dev,
1563                         hba->req_size * hba->max_requests + 0x20,
1564                         hba->dma_coherent,
1565                         hba->dma_coherent_handle);
1566 
1567         hba->ops->internal_memfree(hba);
1568 
1569         hba->ops->unmap_pci_bar(hba);
1570 
1571         pci_release_regions(hba->pcidev);
1572         pci_set_drvdata(hba->pcidev, NULL);
1573         pci_disable_device(hba->pcidev);
1574 
1575         scsi_host_put(host);
1576 }
1577 
1578 static struct hptiop_adapter_ops hptiop_itl_ops = {
1579         .family            = INTEL_BASED_IOP,
1580         .iop_wait_ready    = iop_wait_ready_itl,
1581         .internal_memalloc = hptiop_internal_memalloc_itl,
1582         .internal_memfree  = hptiop_internal_memfree_itl,
1583         .map_pci_bar       = hptiop_map_pci_bar_itl,
1584         .unmap_pci_bar     = hptiop_unmap_pci_bar_itl,
1585         .enable_intr       = hptiop_enable_intr_itl,
1586         .disable_intr      = hptiop_disable_intr_itl,
1587         .get_config        = iop_get_config_itl,
1588         .set_config        = iop_set_config_itl,
1589         .iop_intr          = iop_intr_itl,
1590         .post_msg          = hptiop_post_msg_itl,
1591         .post_req          = hptiop_post_req_itl,
1592         .hw_dma_bit_mask   = 64,
1593         .reset_comm        = hptiop_reset_comm_itl,
1594         .host_phy_flag     = cpu_to_le64(0),
1595 };
1596 
1597 static struct hptiop_adapter_ops hptiop_mv_ops = {
1598         .family            = MV_BASED_IOP,
1599         .iop_wait_ready    = iop_wait_ready_mv,
1600         .internal_memalloc = hptiop_internal_memalloc_mv,
1601         .internal_memfree  = hptiop_internal_memfree_mv,
1602         .map_pci_bar       = hptiop_map_pci_bar_mv,
1603         .unmap_pci_bar     = hptiop_unmap_pci_bar_mv,
1604         .enable_intr       = hptiop_enable_intr_mv,
1605         .disable_intr      = hptiop_disable_intr_mv,
1606         .get_config        = iop_get_config_mv,
1607         .set_config        = iop_set_config_mv,
1608         .iop_intr          = iop_intr_mv,
1609         .post_msg          = hptiop_post_msg_mv,
1610         .post_req          = hptiop_post_req_mv,
1611         .hw_dma_bit_mask   = 33,
1612         .reset_comm        = hptiop_reset_comm_mv,
1613         .host_phy_flag     = cpu_to_le64(0),
1614 };
1615 
1616 static struct hptiop_adapter_ops hptiop_mvfrey_ops = {
1617         .family            = MVFREY_BASED_IOP,
1618         .iop_wait_ready    = iop_wait_ready_mvfrey,
1619         .internal_memalloc = hptiop_internal_memalloc_mvfrey,
1620         .internal_memfree  = hptiop_internal_memfree_mvfrey,
1621         .map_pci_bar       = hptiop_map_pci_bar_mvfrey,
1622         .unmap_pci_bar     = hptiop_unmap_pci_bar_mvfrey,
1623         .enable_intr       = hptiop_enable_intr_mvfrey,
1624         .disable_intr      = hptiop_disable_intr_mvfrey,
1625         .get_config        = iop_get_config_mvfrey,
1626         .set_config        = iop_set_config_mvfrey,
1627         .iop_intr          = iop_intr_mvfrey,
1628         .post_msg          = hptiop_post_msg_mvfrey,
1629         .post_req          = hptiop_post_req_mvfrey,
1630         .hw_dma_bit_mask   = 64,
1631         .reset_comm        = hptiop_reset_comm_mvfrey,
1632         .host_phy_flag     = cpu_to_le64(1),
1633 };
1634 
1635 static struct pci_device_id hptiop_id_table[] = {
1636         { PCI_VDEVICE(TTI, 0x3220), (kernel_ulong_t)&hptiop_itl_ops },
1637         { PCI_VDEVICE(TTI, 0x3320), (kernel_ulong_t)&hptiop_itl_ops },
1638         { PCI_VDEVICE(TTI, 0x3410), (kernel_ulong_t)&hptiop_itl_ops },
1639         { PCI_VDEVICE(TTI, 0x3510), (kernel_ulong_t)&hptiop_itl_ops },
1640         { PCI_VDEVICE(TTI, 0x3511), (kernel_ulong_t)&hptiop_itl_ops },
1641         { PCI_VDEVICE(TTI, 0x3520), (kernel_ulong_t)&hptiop_itl_ops },
1642         { PCI_VDEVICE(TTI, 0x3521), (kernel_ulong_t)&hptiop_itl_ops },
1643         { PCI_VDEVICE(TTI, 0x3522), (kernel_ulong_t)&hptiop_itl_ops },
1644         { PCI_VDEVICE(TTI, 0x3530), (kernel_ulong_t)&hptiop_itl_ops },
1645         { PCI_VDEVICE(TTI, 0x3540), (kernel_ulong_t)&hptiop_itl_ops },
1646         { PCI_VDEVICE(TTI, 0x3560), (kernel_ulong_t)&hptiop_itl_ops },
1647         { PCI_VDEVICE(TTI, 0x4210), (kernel_ulong_t)&hptiop_itl_ops },
1648         { PCI_VDEVICE(TTI, 0x4211), (kernel_ulong_t)&hptiop_itl_ops },
1649         { PCI_VDEVICE(TTI, 0x4310), (kernel_ulong_t)&hptiop_itl_ops },
1650         { PCI_VDEVICE(TTI, 0x4311), (kernel_ulong_t)&hptiop_itl_ops },
1651         { PCI_VDEVICE(TTI, 0x4320), (kernel_ulong_t)&hptiop_itl_ops },
1652         { PCI_VDEVICE(TTI, 0x4321), (kernel_ulong_t)&hptiop_itl_ops },
1653         { PCI_VDEVICE(TTI, 0x4322), (kernel_ulong_t)&hptiop_itl_ops },
1654         { PCI_VDEVICE(TTI, 0x4400), (kernel_ulong_t)&hptiop_itl_ops },
1655         { PCI_VDEVICE(TTI, 0x3120), (kernel_ulong_t)&hptiop_mv_ops },
1656         { PCI_VDEVICE(TTI, 0x3122), (kernel_ulong_t)&hptiop_mv_ops },
1657         { PCI_VDEVICE(TTI, 0x3020), (kernel_ulong_t)&hptiop_mv_ops },
1658         { PCI_VDEVICE(TTI, 0x4520), (kernel_ulong_t)&hptiop_mvfrey_ops },
1659         { PCI_VDEVICE(TTI, 0x4522), (kernel_ulong_t)&hptiop_mvfrey_ops },
1660         {},
1661 };
1662 
1663 MODULE_DEVICE_TABLE(pci, hptiop_id_table);
1664 
1665 static struct pci_driver hptiop_pci_driver = {
1666         .name       = driver_name,
1667         .id_table   = hptiop_id_table,
1668         .probe      = hptiop_probe,
1669         .remove     = hptiop_remove,
1670         .shutdown   = hptiop_shutdown,
1671 };
1672 
1673 static int __init hptiop_module_init(void)
1674 {
1675         printk(KERN_INFO "%s %s\n", driver_name_long, driver_ver);
1676         return pci_register_driver(&hptiop_pci_driver);
1677 }
1678 
1679 static void __exit hptiop_module_exit(void)
1680 {
1681         pci_unregister_driver(&hptiop_pci_driver);
1682 }
1683 
1684 
1685 module_init(hptiop_module_init);
1686 module_exit(hptiop_module_exit);
1687 
1688 MODULE_LICENSE("GPL");
1689 
1690 

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