drivers/scsi/hptiop.c

   1 /*
   2  * HighPoint RR3xxx controller driver for Linux
   3  * Copyright (C) 2006-2007 HighPoint Technologies, Inc. All Rights Reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; version 2 of the License.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * Please report bugs/comments/suggestions to linux@highpoint-tech.com
  15  *
  16  * For more information, visit http://www.highpoint-tech.com
  17  */
  18 #include <linux/module.h>
  19 #include <linux/types.h>
  20 #include <linux/string.h>
  21 #include <linux/kernel.h>
  22 #include <linux/pci.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/errno.h>
  25 #include <linux/delay.h>
  26 #include <linux/timer.h>
  27 #include <linux/spinlock.h>
  28 #include <linux/hdreg.h>
  29 #include <asm/uaccess.h>
  30 #include <asm/io.h>
  31 #include <asm/div64.h>
  32 #include <scsi/scsi_cmnd.h>
  33 #include <scsi/scsi_device.h>
  34 #include <scsi/scsi.h>
  35 #include <scsi/scsi_tcq.h>
  36 #include <scsi/scsi_host.h>
  37
  38 #include "hptiop.h"
  39
  40 MODULE_AUTHOR("HighPoint Technologies, Inc.");
  41 MODULE_DESCRIPTION("HighPoint RocketRAID 3xxx SATA Controller Driver");
  42
  43 static char driver_name[] = "hptiop";
  44 static const char driver_name_long[] = "RocketRAID 3xxx SATA Controller driver";
  45 static const char driver_ver[] = "v1.2 (070830)";
  46
  47 static void hptiop_host_request_callback(struct hptiop_hba *hba, u32 tag);
  48 static void hptiop_iop_request_callback(struct hptiop_hba *hba, u32 tag);
  49 static void hptiop_message_callback(struct hptiop_hba *hba, u32 msg);
  50
  51 static inline void hptiop_pci_posting_flush(struct hpt_iopmu __iomem *iop)
  52 {
  53         readl(&iop->outbound_intstatus);
  54 }
  55
  56 static int iop_wait_ready(struct hpt_iopmu __iomem *iop, u32 millisec)
  57 {
  58         u32 req = 0;
  59         int i;
  60
  61         for (i = 0; i < millisec; i++) {
  62                 req = readl(&iop->inbound_queue);
  63                 if (req != IOPMU_QUEUE_EMPTY)
  64                         break;
  65                 msleep(1);
  66         }
  67
  68         if (req != IOPMU_QUEUE_EMPTY) {
  69                 writel(req, &iop->outbound_queue);
  70                 hptiop_pci_posting_flush(iop);
  71                 return 0;
  72         }
  73
  74         return -1;
  75 }
  76
  77 static void hptiop_request_callback(struct hptiop_hba *hba, u32 tag)
  78 {
  79         if (tag & IOPMU_QUEUE_ADDR_HOST_BIT)
  80                 return hptiop_host_request_callback(hba,
  81                                 tag & ~IOPMU_QUEUE_ADDR_HOST_BIT);
  82         else
  83                 return hptiop_iop_request_callback(hba, tag);
  84 }
  85
  86 static inline void hptiop_drain_outbound_queue(struct hptiop_hba *hba)
  87 {
  88         u32 req;
  89
  90         while ((req = readl(&hba->iop->outbound_queue)) != IOPMU_QUEUE_EMPTY) {
  91
  92                 if (req & IOPMU_QUEUE_MASK_HOST_BITS)
  93                         hptiop_request_callback(hba, req);
  94                 else {
  95                         struct hpt_iop_request_header __iomem * p;
  96
  97                         p = (struct hpt_iop_request_header __iomem *)
  98                                 ((char __iomem *)hba->iop + req);
  99
 100                         if (readl(&p->flags) & IOP_REQUEST_FLAG_SYNC_REQUEST) {
 101                                 if (readl(&p->context))
 102                                         hptiop_request_callback(hba, req);
 103                                 else
 104                                         writel(1, &p->context);
 105                         }
 106                         else
 107                                 hptiop_request_callback(hba, req);
 108                 }
 109         }
 110 }
 111
 112 static int __iop_intr(struct hptiop_hba *hba)
 113 {
 114         struct hpt_iopmu __iomem *iop = hba->iop;
 115         u32 status;
 116         int ret = 0;
 117
 118         status = readl(&iop->outbound_intstatus);
 119
 120         if (status & IOPMU_OUTBOUND_INT_MSG0) {
 121                 u32 msg = readl(&iop->outbound_msgaddr0);
 122                 dprintk("received outbound msg %x\n", msg);
 123                 writel(IOPMU_OUTBOUND_INT_MSG0, &iop->outbound_intstatus);
 124                 hptiop_message_callback(hba, msg);
 125                 ret = 1;
 126         }
 127
 128         if (status & IOPMU_OUTBOUND_INT_POSTQUEUE) {
 129                 hptiop_drain_outbound_queue(hba);
 130                 ret = 1;
 131         }
 132
 133         return ret;
 134 }
 135
 136 static int iop_send_sync_request(struct hptiop_hba *hba,
 137                                         void __iomem *_req, u32 millisec)
 138 {
 139         struct hpt_iop_request_header __iomem *req = _req;
 140         u32 i;
 141
 142         writel(readl(&req->flags) | IOP_REQUEST_FLAG_SYNC_REQUEST,
 143                         &req->flags);
 144
 145         writel(0, &req->context);
 146
 147         writel((unsigned long)req - (unsigned long)hba->iop,
 148                         &hba->iop->inbound_queue);
 149
 150         hptiop_pci_posting_flush(hba->iop);
 151
 152         for (i = 0; i < millisec; i++) {
 153                 __iop_intr(hba);
 154                 if (readl(&req->context))
 155                         return 0;
 156                 msleep(1);
 157         }
 158
 159         return -1;
 160 }
 161
 162 static int iop_send_sync_msg(struct hptiop_hba *hba, u32 msg, u32 millisec)
 163 {
 164         u32 i;
 165
 166         hba->msg_done = 0;
 167
 168         writel(msg, &hba->iop->inbound_msgaddr0);
 169
 170         hptiop_pci_posting_flush(hba->iop);
 171
 172         for (i = 0; i < millisec; i++) {
 173                 spin_lock_irq(hba->host->host_lock);
 174                 __iop_intr(hba);
 175                 spin_unlock_irq(hba->host->host_lock);
 176                 if (hba->msg_done)
 177                         break;
 178                 msleep(1);
 179         }
 180
 181         return hba->msg_done? 0 : -1;
 182 }
 183
 184 static int iop_get_config(struct hptiop_hba *hba,
 185                                 struct hpt_iop_request_get_config *config)
 186 {
 187         u32 req32;
 188         struct hpt_iop_request_get_config __iomem *req;
 189
 190         req32 = readl(&hba->iop->inbound_queue);
 191         if (req32 == IOPMU_QUEUE_EMPTY)
 192                 return -1;
 193
 194         req = (struct hpt_iop_request_get_config __iomem *)
 195                         ((unsigned long)hba->iop + req32);
 196
 197         writel(0, &req->header.flags);
 198         writel(IOP_REQUEST_TYPE_GET_CONFIG, &req->header.type);
 199         writel(sizeof(struct hpt_iop_request_get_config), &req->header.size);
 200         writel(IOP_RESULT_PENDING, &req->header.result);
 201
 202         if (iop_send_sync_request(hba, req, 20000)) {
 203                 dprintk("Get config send cmd failed\n");
 204                 return -1;
 205         }
 206
 207         memcpy_fromio(config, req, sizeof(*config));
 208         writel(req32, &hba->iop->outbound_queue);
 209         return 0;
 210 }
 211
 212 static int iop_set_config(struct hptiop_hba *hba,
 213                                 struct hpt_iop_request_set_config *config)
 214 {
 215         u32 req32;
 216         struct hpt_iop_request_set_config __iomem *req;
 217
 218         req32 = readl(&hba->iop->inbound_queue);
 219         if (req32 == IOPMU_QUEUE_EMPTY)
 220                 return -1;
 221
 222         req = (struct hpt_iop_request_set_config __iomem *)
 223                         ((unsigned long)hba->iop + req32);
 224
 225         memcpy_toio((u8 __iomem *)req + sizeof(struct hpt_iop_request_header),
 226                 (u8 *)config + sizeof(struct hpt_iop_request_header),
 227                 sizeof(struct hpt_iop_request_set_config) -
 228                         sizeof(struct hpt_iop_request_header));
 229
 230         writel(0, &req->header.flags);
 231         writel(IOP_REQUEST_TYPE_SET_CONFIG, &req->header.type);
 232         writel(sizeof(struct hpt_iop_request_set_config), &req->header.size);
 233         writel(IOP_RESULT_PENDING, &req->header.result);
 234
 235         if (iop_send_sync_request(hba, req, 20000)) {
 236                 dprintk("Set config send cmd failed\n");
 237                 return -1;
 238         }
 239
 240         writel(req32, &hba->iop->outbound_queue);
 241         return 0;
 242 }
 243
 244 static int hptiop_initialize_iop(struct hptiop_hba *hba)
 245 {
 246         struct hpt_iopmu __iomem *iop = hba->iop;
 247
 248         /* enable interrupts */
 249         writel(~(IOPMU_OUTBOUND_INT_POSTQUEUE | IOPMU_OUTBOUND_INT_MSG0),
 250                         &iop->outbound_intmask);
 251
 252         hba->initialized = 1;
 253
 254         /* start background tasks */
 255         if (iop_send_sync_msg(hba,
 256                         IOPMU_INBOUND_MSG0_START_BACKGROUND_TASK, 5000)) {
 257                 printk(KERN_ERR "scsi%d: fail to start background task\n",
 258                         hba->host->host_no);
 259                 return -1;
 260         }
 261         return 0;
 262 }
 263
 264 static int hptiop_map_pci_bar(struct hptiop_hba *hba)
 265 {
 266         u32 mem_base_phy, length;
 267         void __iomem *mem_base_virt;
 268         struct pci_dev *pcidev = hba->pcidev;
 269
 270         if (!(pci_resource_flags(pcidev, 0) & IORESOURCE_MEM)) {
 271                 printk(KERN_ERR "scsi%d: pci resource invalid\n",
 272                                 hba->host->host_no);
 273                 return -1;
 274         }
 275
 276         mem_base_phy = pci_resource_start(pcidev, 0);
 277         length = pci_resource_len(pcidev, 0);
 278         mem_base_virt = ioremap(mem_base_phy, length);
 279
 280         if (!mem_base_virt) {
 281                 printk(KERN_ERR "scsi%d: Fail to ioremap memory space\n",
 282                                 hba->host->host_no);
 283                 return -1;
 284         }
 285
 286         hba->iop = mem_base_virt;
 287         dprintk("hptiop_map_pci_bar: iop=%p\n", hba->iop);
 288         return 0;
 289 }
 290
 291 static void hptiop_message_callback(struct hptiop_hba *hba, u32 msg)
 292 {
 293         dprintk("iop message 0x%x\n", msg);
 294
 295         if (!hba->initialized)
 296                 return;
 297
 298         if (msg == IOPMU_INBOUND_MSG0_RESET) {
 299                 atomic_set(&hba->resetting, 0);
 300                 wake_up(&hba->reset_wq);
 301         }
 302         else if (msg <= IOPMU_INBOUND_MSG0_MAX)
 303                 hba->msg_done = 1;
 304 }
 305
 306 static inline struct hptiop_request *get_req(struct hptiop_hba *hba)
 307 {
 308         struct hptiop_request *ret;
 309
 310         dprintk("get_req : req=%p\n", hba->req_list);
 311
 312         ret = hba->req_list;
 313         if (ret)
 314                 hba->req_list = ret->next;
 315
 316         return ret;
 317 }
 318
 319 static inline void free_req(struct hptiop_hba *hba, struct hptiop_request *req)
 320 {
 321         dprintk("free_req(%d, %p)\n", req->index, req);
 322         req->next = hba->req_list;
 323         hba->req_list = req;
 324 }
 325
 326 static void hptiop_host_request_callback(struct hptiop_hba *hba, u32 _tag)
 327 {
 328         struct hpt_iop_request_scsi_command *req;
 329         struct scsi_cmnd *scp;
 330         u32 tag;
 331
 332         if (hba->iopintf_v2) {
 333                 tag = _tag & ~ IOPMU_QUEUE_REQUEST_RESULT_BIT;
 334                 req = hba->reqs[tag].req_virt;
 335                 if (likely(_tag & IOPMU_QUEUE_REQUEST_RESULT_BIT))
 336                         req->header.result = IOP_RESULT_SUCCESS;
 337         } else {
 338                 tag = _tag;
 339                 req = hba->reqs[tag].req_virt;
 340         }
 341
 342         dprintk("hptiop_host_request_callback: req=%p, type=%d, "
 343                         "result=%d, context=0x%x tag=%d\n",
 344                         req, req->header.type, req->header.result,
 345                         req->header.context, tag);
 346
 347         BUG_ON(!req->header.result);
 348         BUG_ON(req->header.type != cpu_to_le32(IOP_REQUEST_TYPE_SCSI_COMMAND));
 349
 350         scp = hba->reqs[tag].scp;
 351
 352         if (HPT_SCP(scp)->mapped)
 353                 scsi_dma_unmap(scp);
 354
 355         switch (le32_to_cpu(req->header.result)) {
 356         case IOP_RESULT_SUCCESS:
 357                 scp->result = (DID_OK<<16);
 358                 break;
 359         case IOP_RESULT_BAD_TARGET:
 360                 scp->result = (DID_BAD_TARGET<<16);
 361                 break;
 362         case IOP_RESULT_BUSY:
 363                 scp->result = (DID_BUS_BUSY<<16);
 364                 break;
 365         case IOP_RESULT_RESET:
 366                 scp->result = (DID_RESET<<16);
 367                 break;
 368         case IOP_RESULT_FAIL:
 369                 scp->result = (DID_ERROR<<16);
 370                 break;
 371         case IOP_RESULT_INVALID_REQUEST:
 372                 scp->result = (DID_ABORT<<16);
 373                 break;
 374         case IOP_RESULT_MODE_SENSE_CHECK_CONDITION:
 375                 scp->result = SAM_STAT_CHECK_CONDITION;
 376                 memset(&scp->sense_buffer,
 377                                 0, sizeof(scp->sense_buffer));
 378                 memcpy(&scp->sense_buffer, &req->sg_list,
 379                                 min(sizeof(scp->sense_buffer),
 380                                         le32_to_cpu(req->dataxfer_length)));
 381                 break;
 382
 383         default:
 384                 scp->result = ((DRIVER_INVALID|SUGGEST_ABORT)<<24) |
 385                                         (DID_ABORT<<16);
 386                 break;
 387         }
 388
 389         dprintk("scsi_done(%p)\n", scp);
 390         scp->scsi_done(scp);
 391         free_req(hba, &hba->reqs[tag]);
 392 }
 393
 394 void hptiop_iop_request_callback(struct hptiop_hba *hba, u32 tag)
 395 {
 396         struct hpt_iop_request_header __iomem *req;
 397         struct hpt_iop_request_ioctl_command __iomem *p;
 398         struct hpt_ioctl_k *arg;
 399
 400         req = (struct hpt_iop_request_header __iomem *)
 401                         ((unsigned long)hba->iop + tag);
 402         dprintk("hptiop_iop_request_callback: req=%p, type=%d, "
 403                         "result=%d, context=0x%x tag=%d\n",
 404                         req, readl(&req->type), readl(&req->result),
 405                         readl(&req->context), tag);
 406
 407         BUG_ON(!readl(&req->result));
 408         BUG_ON(readl(&req->type) != IOP_REQUEST_TYPE_IOCTL_COMMAND);
 409
 410         p = (struct hpt_iop_request_ioctl_command __iomem *)req;
 411         arg = (struct hpt_ioctl_k *)(unsigned long)
 412                 (readl(&req->context) |
 413                         ((u64)readl(&req->context_hi32)<<32));
 414
 415         if (readl(&req->result) == IOP_RESULT_SUCCESS) {
 416                 arg->result = HPT_IOCTL_RESULT_OK;
 417
 418                 if (arg->outbuf_size)
 419                         memcpy_fromio(arg->outbuf,
 420                                 &p->buf[(readl(&p->inbuf_size) + 3)& ~3],
 421                                 arg->outbuf_size);
 422
 423                 if (arg->bytes_returned)
 424                         *arg->bytes_returned = arg->outbuf_size;
 425         }
 426         else
 427                 arg->result = HPT_IOCTL_RESULT_FAILED;
 428
 429         arg->done(arg);
 430         writel(tag, &hba->iop->outbound_queue);
 431 }
 432
 433 static irqreturn_t hptiop_intr(int irq, void *dev_id)
 434 {
 435         struct hptiop_hba  *hba = dev_id;
 436         int  handled;
 437         unsigned long flags;
 438
 439         spin_lock_irqsave(hba->host->host_lock, flags);
 440         handled = __iop_intr(hba);
 441         spin_unlock_irqrestore(hba->host->host_lock, flags);
 442
 443         return handled;
 444 }
 445
 446 static int hptiop_buildsgl(struct scsi_cmnd *scp, struct hpt_iopsg *psg)
 447 {
 448         struct Scsi_Host *host = scp->device->host;
 449         struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
 450         struct scatterlist *sg;
 451         int idx, nseg;
 452
 453         nseg = scsi_dma_map(scp);
 454         BUG_ON(nseg < 0);
 455         if (!nseg)
 456                 return 0;
 457
 458         HPT_SCP(scp)->sgcnt = nseg;
 459         HPT_SCP(scp)->mapped = 1;
 460
 461         BUG_ON(HPT_SCP(scp)->sgcnt > hba->max_sg_descriptors);
 462
 463         scsi_for_each_sg(scp, sg, HPT_SCP(scp)->sgcnt, idx) {
 464                 psg[idx].pci_address = cpu_to_le64(sg_dma_address(sg));
 465                 psg[idx].size = cpu_to_le32(sg_dma_len(sg));
 466                 psg[idx].eot = (idx == HPT_SCP(scp)->sgcnt - 1) ?
 467                         cpu_to_le32(1) : 0;
 468         }
 469         return HPT_SCP(scp)->sgcnt;
 470 }
 471
 472 static int hptiop_queuecommand(struct scsi_cmnd *scp,
 473                                 void (*done)(struct scsi_cmnd *))
 474 {
 475         struct Scsi_Host *host = scp->device->host;
 476         struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
 477         struct hpt_iop_request_scsi_command *req;
 478         int sg_count = 0;
 479         struct hptiop_request *_req;
 480
 481         BUG_ON(!done);
 482         scp->scsi_done = done;
 483
 484         _req = get_req(hba);
 485         if (_req == NULL) {
 486                 dprintk("hptiop_queuecmd : no free req\n");
 487                 return SCSI_MLQUEUE_HOST_BUSY;
 488         }
 489
 490         _req->scp = scp;
 491
 492         dprintk("hptiop_queuecmd(scp=%p) %d/%d/%d/%d cdb=(%x-%x-%x) "
 493                         "req_index=%d, req=%p\n",
 494                         scp,
 495                         host->host_no, scp->device->channel,
 496                         scp->device->id, scp->device->lun,
 497                         *((u32 *)&scp->cmnd),
 498                         *((u32 *)&scp->cmnd + 1),
 499                         *((u32 *)&scp->cmnd + 2),
 500                         _req->index, _req->req_virt);
 501
 502         scp->result = 0;
 503
 504         if (scp->device->channel || scp->device->lun ||
 505                         scp->device->id > hba->max_devices) {
 506                 scp->result = DID_BAD_TARGET << 16;
 507                 free_req(hba, _req);
 508                 goto cmd_done;
 509         }
 510
 511         req = _req->req_virt;
 512
 513         /* build S/G table */
 514         sg_count = hptiop_buildsgl(scp, req->sg_list);
 515         if (!sg_count)
 516                 HPT_SCP(scp)->mapped = 0;
 517
 518         req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
 519         req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_SCSI_COMMAND);
 520         req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
 521         req->header.context = cpu_to_le32(IOPMU_QUEUE_ADDR_HOST_BIT |
 522                                                         (u32)_req->index);
 523         req->header.context_hi32 = 0;
 524         req->dataxfer_length = cpu_to_le32(scsi_bufflen(scp));
 525         req->channel = scp->device->channel;
 526         req->target = scp->device->id;
 527         req->lun = scp->device->lun;
 528         req->header.size = cpu_to_le32(
 529                                 sizeof(struct hpt_iop_request_scsi_command)
 530                                  - sizeof(struct hpt_iopsg)
 531                                  + sg_count * sizeof(struct hpt_iopsg));
 532
 533         memcpy(req->cdb, scp->cmnd, sizeof(req->cdb));
 534
 535         if (hba->iopintf_v2) {
 536                 u32 size_bits;
 537                 if (req->header.size < 256)
 538                         size_bits = IOPMU_QUEUE_REQUEST_SIZE_BIT;
 539                 else if (req->header.size < 512)
 540                         size_bits = IOPMU_QUEUE_ADDR_HOST_BIT;
 541                 else
 542                         size_bits = IOPMU_QUEUE_REQUEST_SIZE_BIT |
 543                                                 IOPMU_QUEUE_ADDR_HOST_BIT;
 544                 writel(_req->req_shifted_phy | size_bits, &hba->iop->inbound_queue);
 545         } else
 546                 writel(_req->req_shifted_phy | IOPMU_QUEUE_ADDR_HOST_BIT,
 547                                         &hba->iop->inbound_queue);
 548
 549         return 0;
 550
 551 cmd_done:
 552         dprintk("scsi_done(scp=%p)\n", scp);
 553         scp->scsi_done(scp);
 554         return 0;
 555 }
 556
 557 static const char *hptiop_info(struct Scsi_Host *host)
 558 {
 559         return driver_name_long;
 560 }
 561
 562 static int hptiop_reset_hba(struct hptiop_hba *hba)
 563 {
 564         if (atomic_xchg(&hba->resetting, 1) == 0) {
 565                 atomic_inc(&hba->reset_count);
 566                 writel(IOPMU_INBOUND_MSG0_RESET,
 567                                 &hba->iop->inbound_msgaddr0);
 568                 hptiop_pci_posting_flush(hba->iop);
 569         }
 570
 571         wait_event_timeout(hba->reset_wq,
 572                         atomic_read(&hba->resetting) == 0, 60 * HZ);
 573
 574         if (atomic_read(&hba->resetting)) {
 575                 /* IOP is in unkown state, abort reset */
 576                 printk(KERN_ERR "scsi%d: reset failed\n", hba->host->host_no);
 577                 return -1;
 578         }
 579
 580         if (iop_send_sync_msg(hba,
 581                 IOPMU_INBOUND_MSG0_START_BACKGROUND_TASK, 5000)) {
 582                 dprintk("scsi%d: fail to start background task\n",
 583                                 hba->host->host_no);
 584         }
 585
 586         return 0;
 587 }
 588
 589 static int hptiop_reset(struct scsi_cmnd *scp)
 590 {
 591         struct Scsi_Host * host = scp->device->host;
 592         struct hptiop_hba * hba = (struct hptiop_hba *)host->hostdata;
 593
 594         printk(KERN_WARNING "hptiop_reset(%d/%d/%d) scp=%p\n",
 595                         scp->device->host->host_no, scp->device->channel,
 596                         scp->device->id, scp);
 597
 598         return hptiop_reset_hba(hba)? FAILED : SUCCESS;
 599 }
 600
 601 static int hptiop_adjust_disk_queue_depth(struct scsi_device *sdev,
 602                                                 int queue_depth)
 603 {
 604         if(queue_depth > 256)
 605                 queue_depth = 256;
 606         scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
 607         return queue_depth;
 608 }
 609
 610 static ssize_t hptiop_show_version(struct class_device *class_dev, char *buf)
 611 {
 612         return snprintf(buf, PAGE_SIZE, "%s\n", driver_ver);
 613 }
 614
 615 static ssize_t hptiop_show_fw_version(struct class_device *class_dev, char *buf)
 616 {
 617         struct Scsi_Host *host = class_to_shost(class_dev);
 618         struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
 619
 620         return snprintf(buf, PAGE_SIZE, "%d.%d.%d.%d\n",
 621                                 hba->firmware_version >> 24,
 622                                 (hba->firmware_version >> 16) & 0xff,
 623                                 (hba->firmware_version >> 8) & 0xff,
 624                                 hba->firmware_version & 0xff);
 625 }
 626
 627 static struct class_device_attribute hptiop_attr_version = {
 628         .attr = {
 629                 .name = "driver-version",
 630                 .mode = S_IRUGO,
 631         },
 632         .show = hptiop_show_version,
 633 };
 634
 635 static struct class_device_attribute hptiop_attr_fw_version = {
 636         .attr = {
 637                 .name = "firmware-version",
 638                 .mode = S_IRUGO,
 639         },
 640         .show = hptiop_show_fw_version,
 641 };
 642
 643 static struct class_device_attribute *hptiop_attrs[] = {
 644         &hptiop_attr_version,
 645         &hptiop_attr_fw_version,
 646         NULL
 647 };
 648
 649 static struct scsi_host_template driver_template = {
 650         .module                     = THIS_MODULE,
 651         .name                       = driver_name,
 652         .queuecommand               = hptiop_queuecommand,
 653         .eh_device_reset_handler    = hptiop_reset,
 654         .eh_bus_reset_handler       = hptiop_reset,
 655         .info                       = hptiop_info,
 656         .unchecked_isa_dma          = 0,
 657         .emulated                   = 0,
 658         .use_clustering             = ENABLE_CLUSTERING,
 659         .use_sg_chaining            = ENABLE_SG_CHAINING,
 660         .proc_name                  = driver_name,
 661         .shost_attrs                = hptiop_attrs,
 662         .this_id                    = -1,
 663         .change_queue_depth         = hptiop_adjust_disk_queue_depth,
 664 };
 665
 666 static int __devinit hptiop_probe(struct pci_dev *pcidev,
 667                                         const struct pci_device_id *id)
 668 {
 669         struct Scsi_Host *host = NULL;
 670         struct hptiop_hba *hba;
 671         struct hpt_iop_request_get_config iop_config;
 672         struct hpt_iop_request_set_config set_config;
 673         dma_addr_t start_phy;
 674         void *start_virt;
 675         u32 offset, i, req_size;
 676
 677         dprintk("hptiop_probe(%p)\n", pcidev);
 678
 679         if (pci_enable_device(pcidev)) {
 680                 printk(KERN_ERR "hptiop: fail to enable pci device\n");
 681                 return -ENODEV;
 682         }
 683
 684         printk(KERN_INFO "adapter at PCI %d:%d:%d, IRQ %d\n",
 685                 pcidev->bus->number, pcidev->devfn >> 3, pcidev->devfn & 7,
 686                 pcidev->irq);
 687
 688         pci_set_master(pcidev);
 689
 690         /* Enable 64bit DMA if possible */
 691         if (pci_set_dma_mask(pcidev, DMA_64BIT_MASK)) {
 692                 if (pci_set_dma_mask(pcidev, DMA_32BIT_MASK)) {
 693                         printk(KERN_ERR "hptiop: fail to set dma_mask\n");
 694                         goto disable_pci_device;
 695                 }
 696         }
 697
 698         if (pci_request_regions(pcidev, driver_name)) {
 699                 printk(KERN_ERR "hptiop: pci_request_regions failed\n");
 700                 goto disable_pci_device;
 701         }
 702
 703         host = scsi_host_alloc(&driver_template, sizeof(struct hptiop_hba));
 704         if (!host) {
 705                 printk(KERN_ERR "hptiop: fail to alloc scsi host\n");
 706                 goto free_pci_regions;
 707         }
 708
 709         hba = (struct hptiop_hba *)host->hostdata;
 710
 711         hba->pcidev = pcidev;
 712         hba->host = host;
 713         hba->initialized = 0;
 714         hba->iopintf_v2 = 0;
 715
 716         atomic_set(&hba->resetting, 0);
 717         atomic_set(&hba->reset_count, 0);
 718
 719         init_waitqueue_head(&hba->reset_wq);
 720         init_waitqueue_head(&hba->ioctl_wq);
 721
 722         host->max_lun = 1;
 723         host->max_channel = 0;
 724         host->io_port = 0;
 725         host->n_io_port = 0;
 726         host->irq = pcidev->irq;
 727
 728         if (hptiop_map_pci_bar(hba))
 729                 goto free_scsi_host;
 730
 731         if (iop_wait_ready(hba->iop, 20000)) {
 732                 printk(KERN_ERR "scsi%d: firmware not ready\n",
 733                                 hba->host->host_no);
 734                 goto unmap_pci_bar;
 735         }
 736
 737         if (iop_get_config(hba, &iop_config)) {
 738                 printk(KERN_ERR "scsi%d: get config failed\n",
 739                                 hba->host->host_no);
 740                 goto unmap_pci_bar;
 741         }
 742
 743         hba->max_requests = min(le32_to_cpu(iop_config.max_requests),
 744                                 HPTIOP_MAX_REQUESTS);
 745         hba->max_devices = le32_to_cpu(iop_config.max_devices);
 746         hba->max_request_size = le32_to_cpu(iop_config.request_size);
 747         hba->max_sg_descriptors = le32_to_cpu(iop_config.max_sg_count);
 748         hba->firmware_version = le32_to_cpu(iop_config.firmware_version);
 749         hba->interface_version = le32_to_cpu(iop_config.interface_version);
 750         hba->sdram_size = le32_to_cpu(iop_config.sdram_size);
 751
 752         if (hba->firmware_version > 0x01020000 ||
 753                         hba->interface_version > 0x01020000)
 754                 hba->iopintf_v2 = 1;
 755
 756         host->max_sectors = le32_to_cpu(iop_config.data_transfer_length) >> 9;
 757         host->max_id = le32_to_cpu(iop_config.max_devices);
 758         host->sg_tablesize = le32_to_cpu(iop_config.max_sg_count);
 759         host->can_queue = le32_to_cpu(iop_config.max_requests);
 760         host->cmd_per_lun = le32_to_cpu(iop_config.max_requests);
 761         host->max_cmd_len = 16;
 762
 763         req_size = sizeof(struct hpt_iop_request_scsi_command)
 764                 + sizeof(struct hpt_iopsg) * (hba->max_sg_descriptors - 1);
 765         if ((req_size & 0x1f) != 0)
 766                 req_size = (req_size + 0x1f) & ~0x1f;
 767
 768         memset(&set_config, 0, sizeof(struct hpt_iop_request_set_config));
 769         set_config.iop_id = cpu_to_le32(host->host_no);
 770         set_config.vbus_id = cpu_to_le16(host->host_no);
 771         set_config.max_host_request_size = cpu_to_le16(req_size);
 772
 773         if (iop_set_config(hba, &set_config)) {
 774                 printk(KERN_ERR "scsi%d: set config failed\n",
 775                                 hba->host->host_no);
 776                 goto unmap_pci_bar;
 777         }
 778
 779         pci_set_drvdata(pcidev, host);
 780
 781         if (request_irq(pcidev->irq, hptiop_intr, IRQF_SHARED,
 782                                         driver_name, hba)) {
 783                 printk(KERN_ERR "scsi%d: request irq %d failed\n",
 784                                         hba->host->host_no, pcidev->irq);
 785                 goto unmap_pci_bar;
 786         }
 787
 788         /* Allocate request mem */
 789
 790         dprintk("req_size=%d, max_requests=%d\n", req_size, hba->max_requests);
 791
 792         hba->req_size = req_size;
 793         start_virt = dma_alloc_coherent(&pcidev->dev,
 794                                 hba->req_size*hba->max_requests + 0x20,
 795                                 &start_phy, GFP_KERNEL);
 796
 797         if (!start_virt) {
 798                 printk(KERN_ERR "scsi%d: fail to alloc request mem\n",
 799                                         hba->host->host_no);
 800                 goto free_request_irq;
 801         }
 802
 803         hba->dma_coherent = start_virt;
 804         hba->dma_coherent_handle = start_phy;
 805
 806         if ((start_phy & 0x1f) != 0)
 807         {
 808                 offset = ((start_phy + 0x1f) & ~0x1f) - start_phy;
 809                 start_phy += offset;
 810                 start_virt += offset;
 811         }
 812
 813         hba->req_list = start_virt;
 814         for (i = 0; i < hba->max_requests; i++) {
 815                 hba->reqs[i].next = NULL;
 816                 hba->reqs[i].req_virt = start_virt;
 817                 hba->reqs[i].req_shifted_phy = start_phy >> 5;
 818                 hba->reqs[i].index = i;
 819                 free_req(hba, &hba->reqs[i]);
 820                 start_virt = (char *)start_virt + hba->req_size;
 821                 start_phy = start_phy + hba->req_size;
 822         }
 823
 824         /* Enable Interrupt and start background task */
 825         if (hptiop_initialize_iop(hba))
 826                 goto free_request_mem;
 827
 828         if (scsi_add_host(host, &pcidev->dev)) {
 829                 printk(KERN_ERR "scsi%d: scsi_add_host failed\n",
 830                                         hba->host->host_no);
 831                 goto free_request_mem;
 832         }
 833
 834
 835         scsi_scan_host(host);
 836
 837         dprintk("scsi%d: hptiop_probe successfully\n", hba->host->host_no);
 838         return 0;
 839
 840 free_request_mem:
 841         dma_free_coherent(&hba->pcidev->dev,
 842                         hba->req_size*hba->max_requests + 0x20,
 843                         hba->dma_coherent, hba->dma_coherent_handle);
 844
 845 free_request_irq:
 846         free_irq(hba->pcidev->irq, hba);
 847
 848 unmap_pci_bar:
 849         iounmap(hba->iop);
 850
 851 free_pci_regions:
 852         pci_release_regions(pcidev) ;
 853
 854 free_scsi_host:
 855         scsi_host_put(host);
 856
 857 disable_pci_device:
 858         pci_disable_device(pcidev);
 859
 860         dprintk("scsi%d: hptiop_probe fail\n", host->host_no);
 861         return -ENODEV;
 862 }
 863
 864 static void hptiop_shutdown(struct pci_dev *pcidev)
 865 {
 866         struct Scsi_Host *host = pci_get_drvdata(pcidev);
 867         struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
 868         struct hpt_iopmu __iomem *iop = hba->iop;
 869         u32    int_mask;
 870
 871         dprintk("hptiop_shutdown(%p)\n", hba);
 872
 873         /* stop the iop */
 874         if (iop_send_sync_msg(hba, IOPMU_INBOUND_MSG0_SHUTDOWN, 60000))
 875                 printk(KERN_ERR "scsi%d: shutdown the iop timeout\n",
 876                                         hba->host->host_no);
 877
 878         /* disable all outbound interrupts */
 879         int_mask = readl(&iop->outbound_intmask);
 880         writel(int_mask |
 881                 IOPMU_OUTBOUND_INT_MSG0 | IOPMU_OUTBOUND_INT_POSTQUEUE,
 882                 &iop->outbound_intmask);
 883         hptiop_pci_posting_flush(iop);
 884 }
 885
 886 static void hptiop_remove(struct pci_dev *pcidev)
 887 {
 888         struct Scsi_Host *host = pci_get_drvdata(pcidev);
 889         struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
 890
 891         dprintk("scsi%d: hptiop_remove\n", hba->host->host_no);
 892
 893         scsi_remove_host(host);
 894
 895         hptiop_shutdown(pcidev);
 896
 897         free_irq(hba->pcidev->irq, hba);
 898
 899         dma_free_coherent(&hba->pcidev->dev,
 900                         hba->req_size * hba->max_requests + 0x20,
 901                         hba->dma_coherent,
 902                         hba->dma_coherent_handle);
 903
 904         iounmap(hba->iop);
 905
 906         pci_release_regions(hba->pcidev);
 907         pci_set_drvdata(hba->pcidev, NULL);
 908         pci_disable_device(hba->pcidev);
 909
 910         scsi_host_put(host);
 911 }
 912
 913 static struct pci_device_id hptiop_id_table[] = {
 914         { PCI_VDEVICE(TTI, 0x3220) },
 915         { PCI_VDEVICE(TTI, 0x3320) },
 916         { PCI_VDEVICE(TTI, 0x3520) },
 917         { PCI_VDEVICE(TTI, 0x4320) },
 918         {},
 919 };
 920
 921 MODULE_DEVICE_TABLE(pci, hptiop_id_table);
 922
 923 static struct pci_driver hptiop_pci_driver = {
 924         .name       = driver_name,
 925         .id_table   = hptiop_id_table,
 926         .probe      = hptiop_probe,
 927         .remove     = hptiop_remove,
 928         .shutdown   = hptiop_shutdown,
 929 };
 930
 931 static int __init hptiop_module_init(void)
 932 {
 933         printk(KERN_INFO "%s %s\n", driver_name_long, driver_ver);
 934         return pci_register_driver(&hptiop_pci_driver);
 935 }
 936
 937 static void __exit hptiop_module_exit(void)
 938 {
 939         pci_unregister_driver(&hptiop_pci_driver);
 940 }
 941
 942
 943 module_init(hptiop_module_init);
 944 module_exit(hptiop_module_exit);
 945
 946 MODULE_LICENSE("GPL");
 947