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,
 379                         &req->sg_list, le32_to_cpu(req->dataxfer_length));
 380                 break;
 381
 382         default:
 383                 scp->result = ((DRIVER_INVALID|SUGGEST_ABORT)<<24) |
 384                                         (DID_ABORT<<16);
 385                 break;
 386         }
 387
 388         dprintk("scsi_done(%p)\n", scp);
 389         scp->scsi_done(scp);
 390         free_req(hba, &hba->reqs[tag]);
 391 }
 392
 393 void hptiop_iop_request_callback(struct hptiop_hba *hba, u32 tag)
 394 {
 395         struct hpt_iop_request_header __iomem *req;
 396         struct hpt_iop_request_ioctl_command __iomem *p;
 397         struct hpt_ioctl_k *arg;
 398
 399         req = (struct hpt_iop_request_header __iomem *)
 400                         ((unsigned long)hba->iop + tag);
 401         dprintk("hptiop_iop_request_callback: req=%p, type=%d, "
 402                         "result=%d, context=0x%x tag=%d\n",
 403                         req, readl(&req->type), readl(&req->result),
 404                         readl(&req->context), tag);
 405
 406         BUG_ON(!readl(&req->result));
 407         BUG_ON(readl(&req->type) != IOP_REQUEST_TYPE_IOCTL_COMMAND);
 408
 409         p = (struct hpt_iop_request_ioctl_command __iomem *)req;
 410         arg = (struct hpt_ioctl_k *)(unsigned long)
 411                 (readl(&req->context) |
 412                         ((u64)readl(&req->context_hi32)<<32));
 413
 414         if (readl(&req->result) == IOP_RESULT_SUCCESS) {
 415                 arg->result = HPT_IOCTL_RESULT_OK;
 416
 417                 if (arg->outbuf_size)
 418                         memcpy_fromio(arg->outbuf,
 419                                 &p->buf[(readl(&p->inbuf_size) + 3)& ~3],
 420                                 arg->outbuf_size);
 421
 422                 if (arg->bytes_returned)
 423                         *arg->bytes_returned = arg->outbuf_size;
 424         }
 425         else
 426                 arg->result = HPT_IOCTL_RESULT_FAILED;
 427
 428         arg->done(arg);
 429         writel(tag, &hba->iop->outbound_queue);
 430 }
 431
 432 static irqreturn_t hptiop_intr(int irq, void *dev_id)
 433 {
 434         struct hptiop_hba  *hba = dev_id;
 435         int  handled;
 436         unsigned long flags;
 437
 438         spin_lock_irqsave(hba->host->host_lock, flags);
 439         handled = __iop_intr(hba);
 440         spin_unlock_irqrestore(hba->host->host_lock, flags);
 441
 442         return handled;
 443 }
 444
 445 static int hptiop_buildsgl(struct scsi_cmnd *scp, struct hpt_iopsg *psg)
 446 {
 447         struct Scsi_Host *host = scp->device->host;
 448         struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
 449         struct scatterlist *sg;
 450         int idx, nseg;
 451
 452         nseg = scsi_dma_map(scp);
 453         BUG_ON(nseg < 0);
 454         if (!nseg)
 455                 return 0;
 456
 457         HPT_SCP(scp)->sgcnt = nseg;
 458         HPT_SCP(scp)->mapped = 1;
 459
 460         BUG_ON(HPT_SCP(scp)->sgcnt > hba->max_sg_descriptors);
 461
 462         scsi_for_each_sg(scp, sg, HPT_SCP(scp)->sgcnt, idx) {
 463                 psg[idx].pci_address = cpu_to_le64(sg_dma_address(sg));
 464                 psg[idx].size = cpu_to_le32(sg_dma_len(sg));
 465                 psg[idx].eot = (idx == HPT_SCP(scp)->sgcnt - 1) ?
 466                         cpu_to_le32(1) : 0;
 467         }
 468         return HPT_SCP(scp)->sgcnt;
 469 }
 470
 471 static int hptiop_queuecommand(struct scsi_cmnd *scp,
 472                                 void (*done)(struct scsi_cmnd *))
 473 {
 474         struct Scsi_Host *host = scp->device->host;
 475         struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
 476         struct hpt_iop_request_scsi_command *req;
 477         int sg_count = 0;
 478         struct hptiop_request *_req;
 479
 480         BUG_ON(!done);
 481         scp->scsi_done = done;
 482
 483         _req = get_req(hba);
 484         if (_req == NULL) {
 485                 dprintk("hptiop_queuecmd : no free req\n");
 486                 return SCSI_MLQUEUE_HOST_BUSY;
 487         }
 488
 489         _req->scp = scp;
 490
 491         dprintk("hptiop_queuecmd(scp=%p) %d/%d/%d/%d cdb=(%x-%x-%x) "
 492                         "req_index=%d, req=%p\n",
 493                         scp,
 494                         host->host_no, scp->device->channel,
 495                         scp->device->id, scp->device->lun,
 496                         *((u32 *)&scp->cmnd),
 497                         *((u32 *)&scp->cmnd + 1),
 498                         *((u32 *)&scp->cmnd + 2),
 499                         _req->index, _req->req_virt);
 500
 501         scp->result = 0;
 502
 503         if (scp->device->channel || scp->device->lun ||
 504                         scp->device->id > hba->max_devices) {
 505                 scp->result = DID_BAD_TARGET << 16;
 506                 free_req(hba, _req);
 507                 goto cmd_done;
 508         }
 509
 510         req = _req->req_virt;
 511
 512         /* build S/G table */
 513         sg_count = hptiop_buildsgl(scp, req->sg_list);
 514         if (!sg_count)
 515                 HPT_SCP(scp)->mapped = 0;
 516
 517         req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
 518         req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_SCSI_COMMAND);
 519         req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
 520         req->header.context = cpu_to_le32(IOPMU_QUEUE_ADDR_HOST_BIT |
 521                                                         (u32)_req->index);
 522         req->header.context_hi32 = 0;
 523         req->dataxfer_length = cpu_to_le32(scsi_bufflen(scp));
 524         req->channel = scp->device->channel;
 525         req->target = scp->device->id;
 526         req->lun = scp->device->lun;
 527         req->header.size = cpu_to_le32(
 528                                 sizeof(struct hpt_iop_request_scsi_command)
 529                                  - sizeof(struct hpt_iopsg)
 530                                  + sg_count * sizeof(struct hpt_iopsg));
 531
 532         memcpy(req->cdb, scp->cmnd, sizeof(req->cdb));
 533
 534         if (hba->iopintf_v2) {
 535                 u32 size_bits;
 536                 if (req->header.size < 256)
 537                         size_bits = IOPMU_QUEUE_REQUEST_SIZE_BIT;
 538                 else if (req->header.size < 512)
 539                         size_bits = IOPMU_QUEUE_ADDR_HOST_BIT;
 540                 else
 541                         size_bits = IOPMU_QUEUE_REQUEST_SIZE_BIT |
 542                                                 IOPMU_QUEUE_ADDR_HOST_BIT;
 543                 writel(_req->req_shifted_phy | size_bits, &hba->iop->inbound_queue);
 544         } else
 545                 writel(_req->req_shifted_phy | IOPMU_QUEUE_ADDR_HOST_BIT,
 546                                         &hba->iop->inbound_queue);
 547
 548         return 0;
 549
 550 cmd_done:
 551         dprintk("scsi_done(scp=%p)\n", scp);
 552         scp->scsi_done(scp);
 553         return 0;
 554 }
 555
 556 static const char *hptiop_info(struct Scsi_Host *host)
 557 {
 558         return driver_name_long;
 559 }
 560
 561 static int hptiop_reset_hba(struct hptiop_hba *hba)
 562 {
 563         if (atomic_xchg(&hba->resetting, 1) == 0) {
 564                 atomic_inc(&hba->reset_count);
 565                 writel(IOPMU_INBOUND_MSG0_RESET,
 566                                 &hba->iop->inbound_msgaddr0);
 567                 hptiop_pci_posting_flush(hba->iop);
 568         }
 569
 570         wait_event_timeout(hba->reset_wq,
 571                         atomic_read(&hba->resetting) == 0, 60 * HZ);
 572
 573         if (atomic_read(&hba->resetting)) {
 574                 /* IOP is in unkown state, abort reset */
 575                 printk(KERN_ERR "scsi%d: reset failed\n", hba->host->host_no);
 576                 return -1;
 577         }
 578
 579         if (iop_send_sync_msg(hba,
 580                 IOPMU_INBOUND_MSG0_START_BACKGROUND_TASK, 5000)) {
 581                 dprintk("scsi%d: fail to start background task\n",
 582                                 hba->host->host_no);
 583         }
 584
 585         return 0;
 586 }
 587
 588 static int hptiop_reset(struct scsi_cmnd *scp)
 589 {
 590         struct Scsi_Host * host = scp->device->host;
 591         struct hptiop_hba * hba = (struct hptiop_hba *)host->hostdata;
 592
 593         printk(KERN_WARNING "hptiop_reset(%d/%d/%d) scp=%p\n",
 594                         scp->device->host->host_no, scp->device->channel,
 595                         scp->device->id, scp);
 596
 597         return hptiop_reset_hba(hba)? FAILED : SUCCESS;
 598 }
 599
 600 static int hptiop_adjust_disk_queue_depth(struct scsi_device *sdev,
 601                                                 int queue_depth)
 602 {
 603         if(queue_depth > 256)
 604                 queue_depth = 256;
 605         scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
 606         return queue_depth;
 607 }
 608
 609 static ssize_t hptiop_show_version(struct class_device *class_dev, char *buf)
 610 {
 611         return snprintf(buf, PAGE_SIZE, "%s\n", driver_ver);
 612 }
 613
 614 static ssize_t hptiop_show_fw_version(struct class_device *class_dev, char *buf)
 615 {
 616         struct Scsi_Host *host = class_to_shost(class_dev);
 617         struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
 618
 619         return snprintf(buf, PAGE_SIZE, "%d.%d.%d.%d\n",
 620                                 hba->firmware_version >> 24,
 621                                 (hba->firmware_version >> 16) & 0xff,
 622                                 (hba->firmware_version >> 8) & 0xff,
 623                                 hba->firmware_version & 0xff);
 624 }
 625
 626 static struct class_device_attribute hptiop_attr_version = {
 627         .attr = {
 628                 .name = "driver-version",
 629                 .mode = S_IRUGO,
 630         },
 631         .show = hptiop_show_version,
 632 };
 633
 634 static struct class_device_attribute hptiop_attr_fw_version = {
 635         .attr = {
 636                 .name = "firmware-version",
 637                 .mode = S_IRUGO,
 638         },
 639         .show = hptiop_show_fw_version,
 640 };
 641
 642 static struct class_device_attribute *hptiop_attrs[] = {
 643         &hptiop_attr_version,
 644         &hptiop_attr_fw_version,
 645         NULL
 646 };
 647
 648 static struct scsi_host_template driver_template = {
 649         .module                     = THIS_MODULE,
 650         .name                       = driver_name,
 651         .queuecommand               = hptiop_queuecommand,
 652         .eh_device_reset_handler    = hptiop_reset,
 653         .eh_bus_reset_handler       = hptiop_reset,
 654         .info                       = hptiop_info,
 655         .unchecked_isa_dma          = 0,
 656         .emulated                   = 0,
 657         .use_clustering             = ENABLE_CLUSTERING,
 658         .use_sg_chaining            = ENABLE_SG_CHAINING,
 659         .proc_name                  = driver_name,
 660         .shost_attrs                = hptiop_attrs,
 661         .this_id                    = -1,
 662         .change_queue_depth         = hptiop_adjust_disk_queue_depth,
 663 };
 664
 665 static int __devinit hptiop_probe(struct pci_dev *pcidev,
 666                                         const struct pci_device_id *id)
 667 {
 668         struct Scsi_Host *host = NULL;
 669         struct hptiop_hba *hba;
 670         struct hpt_iop_request_get_config iop_config;
 671         struct hpt_iop_request_set_config set_config;
 672         dma_addr_t start_phy;
 673         void *start_virt;
 674         u32 offset, i, req_size;
 675
 676         dprintk("hptiop_probe(%p)\n", pcidev);
 677
 678         if (pci_enable_device(pcidev)) {
 679                 printk(KERN_ERR "hptiop: fail to enable pci device\n");
 680                 return -ENODEV;
 681         }
 682
 683         printk(KERN_INFO "adapter at PCI %d:%d:%d, IRQ %d\n",
 684                 pcidev->bus->number, pcidev->devfn >> 3, pcidev->devfn & 7,
 685                 pcidev->irq);
 686
 687         pci_set_master(pcidev);
 688
 689         /* Enable 64bit DMA if possible */
 690         if (pci_set_dma_mask(pcidev, DMA_64BIT_MASK)) {
 691                 if (pci_set_dma_mask(pcidev, DMA_32BIT_MASK)) {
 692                         printk(KERN_ERR "hptiop: fail to set dma_mask\n");
 693                         goto disable_pci_device;
 694                 }
 695         }
 696
 697         if (pci_request_regions(pcidev, driver_name)) {
 698                 printk(KERN_ERR "hptiop: pci_request_regions failed\n");
 699                 goto disable_pci_device;
 700         }
 701
 702         host = scsi_host_alloc(&driver_template, sizeof(struct hptiop_hba));
 703         if (!host) {
 704                 printk(KERN_ERR "hptiop: fail to alloc scsi host\n");
 705                 goto free_pci_regions;
 706         }
 707
 708         hba = (struct hptiop_hba *)host->hostdata;
 709
 710         hba->pcidev = pcidev;
 711         hba->host = host;
 712         hba->initialized = 0;
 713         hba->iopintf_v2 = 0;
 714
 715         atomic_set(&hba->resetting, 0);
 716         atomic_set(&hba->reset_count, 0);
 717
 718         init_waitqueue_head(&hba->reset_wq);
 719         init_waitqueue_head(&hba->ioctl_wq);
 720
 721         host->max_lun = 1;
 722         host->max_channel = 0;
 723         host->io_port = 0;
 724         host->n_io_port = 0;
 725         host->irq = pcidev->irq;
 726
 727         if (hptiop_map_pci_bar(hba))
 728                 goto free_scsi_host;
 729
 730         if (iop_wait_ready(hba->iop, 20000)) {
 731                 printk(KERN_ERR "scsi%d: firmware not ready\n",
 732                                 hba->host->host_no);
 733                 goto unmap_pci_bar;
 734         }
 735
 736         if (iop_get_config(hba, &iop_config)) {
 737                 printk(KERN_ERR "scsi%d: get config failed\n",
 738                                 hba->host->host_no);
 739                 goto unmap_pci_bar;
 740         }
 741
 742         hba->max_requests = min(le32_to_cpu(iop_config.max_requests),
 743                                 HPTIOP_MAX_REQUESTS);
 744         hba->max_devices = le32_to_cpu(iop_config.max_devices);
 745         hba->max_request_size = le32_to_cpu(iop_config.request_size);
 746         hba->max_sg_descriptors = le32_to_cpu(iop_config.max_sg_count);
 747         hba->firmware_version = le32_to_cpu(iop_config.firmware_version);
 748         hba->interface_version = le32_to_cpu(iop_config.interface_version);
 749         hba->sdram_size = le32_to_cpu(iop_config.sdram_size);
 750
 751         if (hba->firmware_version > 0x01020000 ||
 752                         hba->interface_version > 0x01020000)
 753                 hba->iopintf_v2 = 1;
 754
 755         host->max_sectors = le32_to_cpu(iop_config.data_transfer_length) >> 9;
 756         host->max_id = le32_to_cpu(iop_config.max_devices);
 757         host->sg_tablesize = le32_to_cpu(iop_config.max_sg_count);
 758         host->can_queue = le32_to_cpu(iop_config.max_requests);
 759         host->cmd_per_lun = le32_to_cpu(iop_config.max_requests);
 760         host->max_cmd_len = 16;
 761
 762         req_size = sizeof(struct hpt_iop_request_scsi_command)
 763                 + sizeof(struct hpt_iopsg) * (hba->max_sg_descriptors - 1);
 764         if ((req_size & 0x1f) != 0)
 765                 req_size = (req_size + 0x1f) & ~0x1f;
 766
 767         memset(&set_config, 0, sizeof(struct hpt_iop_request_set_config));
 768         set_config.iop_id = cpu_to_le32(host->host_no);
 769         set_config.vbus_id = cpu_to_le16(host->host_no);
 770         set_config.max_host_request_size = cpu_to_le16(req_size);
 771
 772         if (iop_set_config(hba, &set_config)) {
 773                 printk(KERN_ERR "scsi%d: set config failed\n",
 774                                 hba->host->host_no);
 775                 goto unmap_pci_bar;
 776         }
 777
 778         pci_set_drvdata(pcidev, host);
 779
 780         if (request_irq(pcidev->irq, hptiop_intr, IRQF_SHARED,
 781                                         driver_name, hba)) {
 782                 printk(KERN_ERR "scsi%d: request irq %d failed\n",
 783                                         hba->host->host_no, pcidev->irq);
 784                 goto unmap_pci_bar;
 785         }
 786
 787         /* Allocate request mem */
 788
 789         dprintk("req_size=%d, max_requests=%d\n", req_size, hba->max_requests);
 790
 791         hba->req_size = req_size;
 792         start_virt = dma_alloc_coherent(&pcidev->dev,
 793                                 hba->req_size*hba->max_requests + 0x20,
 794                                 &start_phy, GFP_KERNEL);
 795
 796         if (!start_virt) {
 797                 printk(KERN_ERR "scsi%d: fail to alloc request mem\n",
 798                                         hba->host->host_no);
 799                 goto free_request_irq;
 800         }
 801
 802         hba->dma_coherent = start_virt;
 803         hba->dma_coherent_handle = start_phy;
 804
 805         if ((start_phy & 0x1f) != 0)
 806         {
 807                 offset = ((start_phy + 0x1f) & ~0x1f) - start_phy;
 808                 start_phy += offset;
 809                 start_virt += offset;
 810         }
 811
 812         hba->req_list = start_virt;
 813         for (i = 0; i < hba->max_requests; i++) {
 814                 hba->reqs[i].next = NULL;
 815                 hba->reqs[i].req_virt = start_virt;
 816                 hba->reqs[i].req_shifted_phy = start_phy >> 5;
 817                 hba->reqs[i].index = i;
 818                 free_req(hba, &hba->reqs[i]);
 819                 start_virt = (char *)start_virt + hba->req_size;
 820                 start_phy = start_phy + hba->req_size;
 821         }
 822
 823         /* Enable Interrupt and start background task */
 824         if (hptiop_initialize_iop(hba))
 825                 goto free_request_mem;
 826
 827         if (scsi_add_host(host, &pcidev->dev)) {
 828                 printk(KERN_ERR "scsi%d: scsi_add_host failed\n",
 829                                         hba->host->host_no);
 830                 goto free_request_mem;
 831         }
 832
 833
 834         scsi_scan_host(host);
 835
 836         dprintk("scsi%d: hptiop_probe successfully\n", hba->host->host_no);
 837         return 0;
 838
 839 free_request_mem:
 840         dma_free_coherent(&hba->pcidev->dev,
 841                         hba->req_size*hba->max_requests + 0x20,
 842                         hba->dma_coherent, hba->dma_coherent_handle);
 843
 844 free_request_irq:
 845         free_irq(hba->pcidev->irq, hba);
 846
 847 unmap_pci_bar:
 848         iounmap(hba->iop);
 849
 850 free_pci_regions:
 851         pci_release_regions(pcidev) ;
 852
 853 free_scsi_host:
 854         scsi_host_put(host);
 855
 856 disable_pci_device:
 857         pci_disable_device(pcidev);
 858
 859         dprintk("scsi%d: hptiop_probe fail\n", host->host_no);
 860         return -ENODEV;
 861 }
 862
 863 static void hptiop_shutdown(struct pci_dev *pcidev)
 864 {
 865         struct Scsi_Host *host = pci_get_drvdata(pcidev);
 866         struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
 867         struct hpt_iopmu __iomem *iop = hba->iop;
 868         u32    int_mask;
 869
 870         dprintk("hptiop_shutdown(%p)\n", hba);
 871
 872         /* stop the iop */
 873         if (iop_send_sync_msg(hba, IOPMU_INBOUND_MSG0_SHUTDOWN, 60000))
 874                 printk(KERN_ERR "scsi%d: shutdown the iop timeout\n",
 875                                         hba->host->host_no);
 876
 877         /* disable all outbound interrupts */
 878         int_mask = readl(&iop->outbound_intmask);
 879         writel(int_mask |
 880                 IOPMU_OUTBOUND_INT_MSG0 | IOPMU_OUTBOUND_INT_POSTQUEUE,
 881                 &iop->outbound_intmask);
 882         hptiop_pci_posting_flush(iop);
 883 }
 884
 885 static void hptiop_remove(struct pci_dev *pcidev)
 886 {
 887         struct Scsi_Host *host = pci_get_drvdata(pcidev);
 888         struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
 889
 890         dprintk("scsi%d: hptiop_remove\n", hba->host->host_no);
 891
 892         scsi_remove_host(host);
 893
 894         hptiop_shutdown(pcidev);
 895
 896         free_irq(hba->pcidev->irq, hba);
 897
 898         dma_free_coherent(&hba->pcidev->dev,
 899                         hba->req_size * hba->max_requests + 0x20,
 900                         hba->dma_coherent,
 901                         hba->dma_coherent_handle);
 902
 903         iounmap(hba->iop);
 904
 905         pci_release_regions(hba->pcidev);
 906         pci_set_drvdata(hba->pcidev, NULL);
 907         pci_disable_device(hba->pcidev);
 908
 909         scsi_host_put(host);
 910 }
 911
 912 static struct pci_device_id hptiop_id_table[] = {
 913         { PCI_VDEVICE(TTI, 0x3220) },
 914         { PCI_VDEVICE(TTI, 0x3320) },
 915         { PCI_VDEVICE(TTI, 0x3520) },
 916         { PCI_VDEVICE(TTI, 0x4320) },
 917         {},
 918 };
 919
 920 MODULE_DEVICE_TABLE(pci, hptiop_id_table);
 921
 922 static struct pci_driver hptiop_pci_driver = {
 923         .name       = driver_name,
 924         .id_table   = hptiop_id_table,
 925         .probe      = hptiop_probe,
 926         .remove     = hptiop_remove,
 927         .shutdown   = hptiop_shutdown,
 928 };
 929
 930 static int __init hptiop_module_init(void)
 931 {
 932         printk(KERN_INFO "%s %s\n", driver_name_long, driver_ver);
 933         return pci_register_driver(&hptiop_pci_driver);
 934 }
 935
 936 static void __exit hptiop_module_exit(void)
 937 {
 938         pci_unregister_driver(&hptiop_pci_driver);
 939 }
 940
 941
 942 module_init(hptiop_module_init);
 943 module_exit(hptiop_module_exit);
 944
 945 MODULE_LICENSE("GPL");
 946