linux/drivers/scsi/hptiop.c
<<
>>
Prefs
   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
  40MODULE_AUTHOR("HighPoint Technologies, Inc.");
  41MODULE_DESCRIPTION("HighPoint RocketRAID 3xxx/4xxx Controller Driver");
  42
  43static char driver_name[] = "hptiop";
  44static const char driver_name_long[] = "RocketRAID 3xxx/4xxx Controller driver";
  45static const char driver_ver[] = "v1.8";
  46
  47static int iop_send_sync_msg(struct hptiop_hba *hba, u32 msg, u32 millisec);
  48static void hptiop_finish_scsi_req(struct hptiop_hba *hba, u32 tag,
  49                                struct hpt_iop_request_scsi_command *req);
  50static void hptiop_host_request_callback_itl(struct hptiop_hba *hba, u32 tag);
  51static void hptiop_iop_request_callback_itl(struct hptiop_hba *hba, u32 tag);
  52static void hptiop_message_callback(struct hptiop_hba *hba, u32 msg);
  53
  54static 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
  75static 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
  80static 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
  85static 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
  94static 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
 121static 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
 150static 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
 169static 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
 183static 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
 211static 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
 238static 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
 261static 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
 306static 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
 328static 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
 348static 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
 368static 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
 374static 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
 381static 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
 387static 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
 408static 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
 436static 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
 458static 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
 480static 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
 512static 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
 534static 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
 557static 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
 563static 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
 569static 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
 576static 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
 593static 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
 619static 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
 636static 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
 643static 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
 658static 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
 673static 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
 679static 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
 685static 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
 704static 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
 717static 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
 724static 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
 781skip_resid:
 782        dprintk("scsi_done(%p)\n", scp);
 783        scp->scsi_done(scp);
 784        free_req(hba, &hba->reqs[tag]);
 785}
 786
 787static 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
 805void 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
 844static 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
 857static 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
 884static 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
 911static 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
 935static 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
 966static int hptiop_reset_comm_itl(struct hptiop_hba *hba)
 967{
 968        return 0;
 969}
 970
 971static int hptiop_reset_comm_mv(struct hptiop_hba *hba)
 972{
 973        return 0;
 974}
 975
 976static 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
1007static 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/%d 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
1070cmd_done:
1071        dprintk("scsi_done(scp=%p)\n", scp);
1072        scp->scsi_done(scp);
1073        return 0;
1074}
1075
1076static DEF_SCSI_QCMD(hptiop_queuecommand)
1077
1078static const char *hptiop_info(struct Scsi_Host *host)
1079{
1080        return driver_name_long;
1081}
1082
1083static 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
1108static 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
1120static 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
1134static 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
1140static 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
1153static struct device_attribute hptiop_attr_version = {
1154        .attr = {
1155                .name = "driver-version",
1156                .mode = S_IRUGO,
1157        },
1158        .show = hptiop_show_version,
1159};
1160
1161static 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
1169static struct device_attribute *hptiop_attrs[] = {
1170        &hptiop_attr_version,
1171        &hptiop_attr_fw_version,
1172        NULL
1173};
1174
1175static 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
1190static int hptiop_internal_memalloc_itl(struct hptiop_hba *hba)
1191{
1192        return 0;
1193}
1194
1195static 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
1205static 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
1257static int hptiop_internal_memfree_itl(struct hptiop_hba *hba)
1258{
1259        return 0;
1260}
1261
1262static 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
1272static 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
1285static 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
1480free_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
1485free_request_irq:
1486        free_irq(hba->pcidev->irq, hba);
1487
1488unmap_pci_bar:
1489        hba->ops->internal_memfree(hba);
1490
1491        hba->ops->unmap_pci_bar(hba);
1492
1493free_scsi_host:
1494        scsi_host_put(host);
1495
1496free_pci_regions:
1497        pci_release_regions(pcidev);
1498
1499disable_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
1506static 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
1522static 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
1533static 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
1539static 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
1549static 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
1578static 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
1597static 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
1616static 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
1635static 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
1663MODULE_DEVICE_TABLE(pci, hptiop_id_table);
1664
1665static 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
1673static 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
1679static void __exit hptiop_module_exit(void)
1680{
1681        pci_unregister_driver(&hptiop_pci_driver);
1682}
1683
1684
1685module_init(hptiop_module_init);
1686module_exit(hptiop_module_exit);
1687
1688MODULE_LICENSE("GPL");
1689
1690
lxr.linux.no kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.