linux/drivers/scsi/hptiop.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * HighPoint RR3xxx/4xxx controller driver for Linux
   4 * Copyright (C) 2006-2015 HighPoint Technologies, Inc. All Rights Reserved.
   5 *
   6 * Please report bugs/comments/suggestions to linux@highpoint-tech.com
   7 *
   8 * For more information, visit http://www.highpoint-tech.com
   9 */
  10#include <linux/module.h>
  11#include <linux/types.h>
  12#include <linux/string.h>
  13#include <linux/kernel.h>
  14#include <linux/pci.h>
  15#include <linux/interrupt.h>
  16#include <linux/errno.h>
  17#include <linux/delay.h>
  18#include <linux/timer.h>
  19#include <linux/spinlock.h>
  20#include <linux/gfp.h>
  21#include <linux/uaccess.h>
  22#include <asm/io.h>
  23#include <asm/div64.h>
  24#include <scsi/scsi_cmnd.h>
  25#include <scsi/scsi_device.h>
  26#include <scsi/scsi.h>
  27#include <scsi/scsi_tcq.h>
  28#include <scsi/scsi_host.h>
  29
  30#include "hptiop.h"
  31
  32MODULE_AUTHOR("HighPoint Technologies, Inc.");
  33MODULE_DESCRIPTION("HighPoint RocketRAID 3xxx/4xxx Controller Driver");
  34
  35static char driver_name[] = "hptiop";
  36static const char driver_name_long[] = "RocketRAID 3xxx/4xxx Controller driver";
  37static const char driver_ver[] = "v1.10.0";
  38
  39static int iop_send_sync_msg(struct hptiop_hba *hba, u32 msg, u32 millisec);
  40static void hptiop_finish_scsi_req(struct hptiop_hba *hba, u32 tag,
  41                                struct hpt_iop_request_scsi_command *req);
  42static void hptiop_host_request_callback_itl(struct hptiop_hba *hba, u32 tag);
  43static void hptiop_iop_request_callback_itl(struct hptiop_hba *hba, u32 tag);
  44static void hptiop_message_callback(struct hptiop_hba *hba, u32 msg);
  45
  46static int iop_wait_ready_itl(struct hptiop_hba *hba, u32 millisec)
  47{
  48        u32 req = 0;
  49        int i;
  50
  51        for (i = 0; i < millisec; i++) {
  52                req = readl(&hba->u.itl.iop->inbound_queue);
  53                if (req != IOPMU_QUEUE_EMPTY)
  54                        break;
  55                msleep(1);
  56        }
  57
  58        if (req != IOPMU_QUEUE_EMPTY) {
  59                writel(req, &hba->u.itl.iop->outbound_queue);
  60                readl(&hba->u.itl.iop->outbound_intstatus);
  61                return 0;
  62        }
  63
  64        return -1;
  65}
  66
  67static int iop_wait_ready_mv(struct hptiop_hba *hba, u32 millisec)
  68{
  69        return iop_send_sync_msg(hba, IOPMU_INBOUND_MSG0_NOP, millisec);
  70}
  71
  72static int iop_wait_ready_mvfrey(struct hptiop_hba *hba, u32 millisec)
  73{
  74        return iop_send_sync_msg(hba, IOPMU_INBOUND_MSG0_NOP, millisec);
  75}
  76
  77static void hptiop_request_callback_itl(struct hptiop_hba *hba, u32 tag)
  78{
  79        if (tag & IOPMU_QUEUE_ADDR_HOST_BIT)
  80                hptiop_host_request_callback_itl(hba,
  81                                tag & ~IOPMU_QUEUE_ADDR_HOST_BIT);
  82        else
  83                hptiop_iop_request_callback_itl(hba, tag);
  84}
  85
  86static void hptiop_drain_outbound_queue_itl(struct hptiop_hba *hba)
  87{
  88        u32 req;
  89
  90        while ((req = readl(&hba->u.itl.iop->outbound_queue)) !=
  91                                                IOPMU_QUEUE_EMPTY) {
  92
  93                if (req & IOPMU_QUEUE_MASK_HOST_BITS)
  94                        hptiop_request_callback_itl(hba, req);
  95                else {
  96                        struct hpt_iop_request_header __iomem * p;
  97
  98                        p = (struct hpt_iop_request_header __iomem *)
  99                                ((char __iomem *)hba->u.itl.iop + req);
 100
 101                        if (readl(&p->flags) & IOP_REQUEST_FLAG_SYNC_REQUEST) {
 102                                if (readl(&p->context))
 103                                        hptiop_request_callback_itl(hba, req);
 104                                else
 105                                        writel(1, &p->context);
 106                        }
 107                        else
 108                                hptiop_request_callback_itl(hba, req);
 109                }
 110        }
 111}
 112
 113static int iop_intr_itl(struct hptiop_hba *hba)
 114{
 115        struct hpt_iopmu_itl __iomem *iop = hba->u.itl.iop;
 116        void __iomem *plx = hba->u.itl.plx;
 117        u32 status;
 118        int ret = 0;
 119
 120        if (plx && readl(plx + 0x11C5C) & 0xf)
 121                writel(1, plx + 0x11C60);
 122
 123        status = readl(&iop->outbound_intstatus);
 124
 125        if (status & IOPMU_OUTBOUND_INT_MSG0) {
 126                u32 msg = readl(&iop->outbound_msgaddr0);
 127
 128                dprintk("received outbound msg %x\n", msg);
 129                writel(IOPMU_OUTBOUND_INT_MSG0, &iop->outbound_intstatus);
 130                hptiop_message_callback(hba, msg);
 131                ret = 1;
 132        }
 133
 134        if (status & IOPMU_OUTBOUND_INT_POSTQUEUE) {
 135                hptiop_drain_outbound_queue_itl(hba);
 136                ret = 1;
 137        }
 138
 139        return ret;
 140}
 141
 142static u64 mv_outbound_read(struct hpt_iopmu_mv __iomem *mu)
 143{
 144        u32 outbound_tail = readl(&mu->outbound_tail);
 145        u32 outbound_head = readl(&mu->outbound_head);
 146
 147        if (outbound_tail != outbound_head) {
 148                u64 p;
 149
 150                memcpy_fromio(&p, &mu->outbound_q[mu->outbound_tail], 8);
 151                outbound_tail++;
 152
 153                if (outbound_tail == MVIOP_QUEUE_LEN)
 154                        outbound_tail = 0;
 155                writel(outbound_tail, &mu->outbound_tail);
 156                return p;
 157        } else
 158                return 0;
 159}
 160
 161static void mv_inbound_write(u64 p, struct hptiop_hba *hba)
 162{
 163        u32 inbound_head = readl(&hba->u.mv.mu->inbound_head);
 164        u32 head = inbound_head + 1;
 165
 166        if (head == MVIOP_QUEUE_LEN)
 167                head = 0;
 168
 169        memcpy_toio(&hba->u.mv.mu->inbound_q[inbound_head], &p, 8);
 170        writel(head, &hba->u.mv.mu->inbound_head);
 171        writel(MVIOP_MU_INBOUND_INT_POSTQUEUE,
 172                        &hba->u.mv.regs->inbound_doorbell);
 173}
 174
 175static void hptiop_request_callback_mv(struct hptiop_hba *hba, u64 tag)
 176{
 177        u32 req_type = (tag >> 5) & 0x7;
 178        struct hpt_iop_request_scsi_command *req;
 179
 180        dprintk("hptiop_request_callback_mv: tag=%llx\n", tag);
 181
 182        BUG_ON((tag & MVIOP_MU_QUEUE_REQUEST_RETURN_CONTEXT) == 0);
 183
 184        switch (req_type) {
 185        case IOP_REQUEST_TYPE_GET_CONFIG:
 186        case IOP_REQUEST_TYPE_SET_CONFIG:
 187                hba->msg_done = 1;
 188                break;
 189
 190        case IOP_REQUEST_TYPE_SCSI_COMMAND:
 191                req = hba->reqs[tag >> 8].req_virt;
 192                if (likely(tag & MVIOP_MU_QUEUE_REQUEST_RESULT_BIT))
 193                        req->header.result = cpu_to_le32(IOP_RESULT_SUCCESS);
 194
 195                hptiop_finish_scsi_req(hba, tag>>8, req);
 196                break;
 197
 198        default:
 199                break;
 200        }
 201}
 202
 203static int iop_intr_mv(struct hptiop_hba *hba)
 204{
 205        u32 status;
 206        int ret = 0;
 207
 208        status = readl(&hba->u.mv.regs->outbound_doorbell);
 209        writel(~status, &hba->u.mv.regs->outbound_doorbell);
 210
 211        if (status & MVIOP_MU_OUTBOUND_INT_MSG) {
 212                u32 msg;
 213                msg = readl(&hba->u.mv.mu->outbound_msg);
 214                dprintk("received outbound msg %x\n", msg);
 215                hptiop_message_callback(hba, msg);
 216                ret = 1;
 217        }
 218
 219        if (status & MVIOP_MU_OUTBOUND_INT_POSTQUEUE) {
 220                u64 tag;
 221
 222                while ((tag = mv_outbound_read(hba->u.mv.mu)))
 223                        hptiop_request_callback_mv(hba, tag);
 224                ret = 1;
 225        }
 226
 227        return ret;
 228}
 229
 230static void hptiop_request_callback_mvfrey(struct hptiop_hba *hba, u32 _tag)
 231{
 232        u32 req_type = _tag & 0xf;
 233        struct hpt_iop_request_scsi_command *req;
 234
 235        switch (req_type) {
 236        case IOP_REQUEST_TYPE_GET_CONFIG:
 237        case IOP_REQUEST_TYPE_SET_CONFIG:
 238                hba->msg_done = 1;
 239                break;
 240
 241        case IOP_REQUEST_TYPE_SCSI_COMMAND:
 242                req = hba->reqs[(_tag >> 4) & 0xff].req_virt;
 243                if (likely(_tag & IOPMU_QUEUE_REQUEST_RESULT_BIT))
 244                        req->header.result = IOP_RESULT_SUCCESS;
 245                hptiop_finish_scsi_req(hba, (_tag >> 4) & 0xff, req);
 246                break;
 247
 248        default:
 249                break;
 250        }
 251}
 252
 253static int iop_intr_mvfrey(struct hptiop_hba *hba)
 254{
 255        u32 _tag, status, cptr, cur_rptr;
 256        int ret = 0;
 257
 258        if (hba->initialized)
 259                writel(0, &(hba->u.mvfrey.mu->pcie_f0_int_enable));
 260
 261        status = readl(&(hba->u.mvfrey.mu->f0_doorbell));
 262        if (status) {
 263                writel(status, &(hba->u.mvfrey.mu->f0_doorbell));
 264                if (status & CPU_TO_F0_DRBL_MSG_BIT) {
 265                        u32 msg = readl(&(hba->u.mvfrey.mu->cpu_to_f0_msg_a));
 266                        dprintk("received outbound msg %x\n", msg);
 267                        hptiop_message_callback(hba, msg);
 268                }
 269                ret = 1;
 270        }
 271
 272        status = readl(&(hba->u.mvfrey.mu->isr_cause));
 273        if (status) {
 274                writel(status, &(hba->u.mvfrey.mu->isr_cause));
 275                do {
 276                        cptr = *hba->u.mvfrey.outlist_cptr & 0xff;
 277                        cur_rptr = hba->u.mvfrey.outlist_rptr;
 278                        while (cur_rptr != cptr) {
 279                                cur_rptr++;
 280                                if (cur_rptr == hba->u.mvfrey.list_count)
 281                                        cur_rptr = 0;
 282
 283                                _tag = hba->u.mvfrey.outlist[cur_rptr].val;
 284                                BUG_ON(!(_tag & IOPMU_QUEUE_MASK_HOST_BITS));
 285                                hptiop_request_callback_mvfrey(hba, _tag);
 286                                ret = 1;
 287                        }
 288                        hba->u.mvfrey.outlist_rptr = cur_rptr;
 289                } while (cptr != (*hba->u.mvfrey.outlist_cptr & 0xff));
 290        }
 291
 292        if (hba->initialized)
 293                writel(0x1010, &(hba->u.mvfrey.mu->pcie_f0_int_enable));
 294
 295        return ret;
 296}
 297
 298static int iop_send_sync_request_itl(struct hptiop_hba *hba,
 299                                        void __iomem *_req, u32 millisec)
 300{
 301        struct hpt_iop_request_header __iomem *req = _req;
 302        u32 i;
 303
 304        writel(readl(&req->flags) | IOP_REQUEST_FLAG_SYNC_REQUEST, &req->flags);
 305        writel(0, &req->context);
 306        writel((unsigned long)req - (unsigned long)hba->u.itl.iop,
 307                        &hba->u.itl.iop->inbound_queue);
 308        readl(&hba->u.itl.iop->outbound_intstatus);
 309
 310        for (i = 0; i < millisec; i++) {
 311                iop_intr_itl(hba);
 312                if (readl(&req->context))
 313                        return 0;
 314                msleep(1);
 315        }
 316
 317        return -1;
 318}
 319
 320static int iop_send_sync_request_mv(struct hptiop_hba *hba,
 321                                        u32 size_bits, u32 millisec)
 322{
 323        struct hpt_iop_request_header *reqhdr = hba->u.mv.internal_req;
 324        u32 i;
 325
 326        hba->msg_done = 0;
 327        reqhdr->flags |= cpu_to_le32(IOP_REQUEST_FLAG_SYNC_REQUEST);
 328        mv_inbound_write(hba->u.mv.internal_req_phy |
 329                        MVIOP_MU_QUEUE_ADDR_HOST_BIT | size_bits, hba);
 330
 331        for (i = 0; i < millisec; i++) {
 332                iop_intr_mv(hba);
 333                if (hba->msg_done)
 334                        return 0;
 335                msleep(1);
 336        }
 337        return -1;
 338}
 339
 340static int iop_send_sync_request_mvfrey(struct hptiop_hba *hba,
 341                                        u32 size_bits, u32 millisec)
 342{
 343        struct hpt_iop_request_header *reqhdr =
 344                hba->u.mvfrey.internal_req.req_virt;
 345        u32 i;
 346
 347        hba->msg_done = 0;
 348        reqhdr->flags |= cpu_to_le32(IOP_REQUEST_FLAG_SYNC_REQUEST);
 349        hba->ops->post_req(hba, &(hba->u.mvfrey.internal_req));
 350
 351        for (i = 0; i < millisec; i++) {
 352                iop_intr_mvfrey(hba);
 353                if (hba->msg_done)
 354                        break;
 355                msleep(1);
 356        }
 357        return hba->msg_done ? 0 : -1;
 358}
 359
 360static void hptiop_post_msg_itl(struct hptiop_hba *hba, u32 msg)
 361{
 362        writel(msg, &hba->u.itl.iop->inbound_msgaddr0);
 363        readl(&hba->u.itl.iop->outbound_intstatus);
 364}
 365
 366static void hptiop_post_msg_mv(struct hptiop_hba *hba, u32 msg)
 367{
 368        writel(msg, &hba->u.mv.mu->inbound_msg);
 369        writel(MVIOP_MU_INBOUND_INT_MSG, &hba->u.mv.regs->inbound_doorbell);
 370        readl(&hba->u.mv.regs->inbound_doorbell);
 371}
 372
 373static void hptiop_post_msg_mvfrey(struct hptiop_hba *hba, u32 msg)
 374{
 375        writel(msg, &(hba->u.mvfrey.mu->f0_to_cpu_msg_a));
 376        readl(&(hba->u.mvfrey.mu->f0_to_cpu_msg_a));
 377}
 378
 379static int iop_send_sync_msg(struct hptiop_hba *hba, u32 msg, u32 millisec)
 380{
 381        u32 i;
 382
 383        hba->msg_done = 0;
 384        hba->ops->disable_intr(hba);
 385        hba->ops->post_msg(hba, msg);
 386
 387        for (i = 0; i < millisec; i++) {
 388                spin_lock_irq(hba->host->host_lock);
 389                hba->ops->iop_intr(hba);
 390                spin_unlock_irq(hba->host->host_lock);
 391                if (hba->msg_done)
 392                        break;
 393                msleep(1);
 394        }
 395
 396        hba->ops->enable_intr(hba);
 397        return hba->msg_done? 0 : -1;
 398}
 399
 400static int iop_get_config_itl(struct hptiop_hba *hba,
 401                                struct hpt_iop_request_get_config *config)
 402{
 403        u32 req32;
 404        struct hpt_iop_request_get_config __iomem *req;
 405
 406        req32 = readl(&hba->u.itl.iop->inbound_queue);
 407        if (req32 == IOPMU_QUEUE_EMPTY)
 408                return -1;
 409
 410        req = (struct hpt_iop_request_get_config __iomem *)
 411                        ((unsigned long)hba->u.itl.iop + req32);
 412
 413        writel(0, &req->header.flags);
 414        writel(IOP_REQUEST_TYPE_GET_CONFIG, &req->header.type);
 415        writel(sizeof(struct hpt_iop_request_get_config), &req->header.size);
 416        writel(IOP_RESULT_PENDING, &req->header.result);
 417
 418        if (iop_send_sync_request_itl(hba, req, 20000)) {
 419                dprintk("Get config send cmd failed\n");
 420                return -1;
 421        }
 422
 423        memcpy_fromio(config, req, sizeof(*config));
 424        writel(req32, &hba->u.itl.iop->outbound_queue);
 425        return 0;
 426}
 427
 428static int iop_get_config_mv(struct hptiop_hba *hba,
 429                                struct hpt_iop_request_get_config *config)
 430{
 431        struct hpt_iop_request_get_config *req = hba->u.mv.internal_req;
 432
 433        req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
 434        req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_GET_CONFIG);
 435        req->header.size =
 436                cpu_to_le32(sizeof(struct hpt_iop_request_get_config));
 437        req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
 438        req->header.context = cpu_to_le32(IOP_REQUEST_TYPE_GET_CONFIG<<5);
 439        req->header.context_hi32 = 0;
 440
 441        if (iop_send_sync_request_mv(hba, 0, 20000)) {
 442                dprintk("Get config send cmd failed\n");
 443                return -1;
 444        }
 445
 446        memcpy(config, req, sizeof(struct hpt_iop_request_get_config));
 447        return 0;
 448}
 449
 450static int iop_get_config_mvfrey(struct hptiop_hba *hba,
 451                                struct hpt_iop_request_get_config *config)
 452{
 453        struct hpt_iop_request_get_config *info = hba->u.mvfrey.config;
 454
 455        if (info->header.size != sizeof(struct hpt_iop_request_get_config) ||
 456                        info->header.type != IOP_REQUEST_TYPE_GET_CONFIG)
 457                return -1;
 458
 459        config->interface_version = info->interface_version;
 460        config->firmware_version = info->firmware_version;
 461        config->max_requests = info->max_requests;
 462        config->request_size = info->request_size;
 463        config->max_sg_count = info->max_sg_count;
 464        config->data_transfer_length = info->data_transfer_length;
 465        config->alignment_mask = info->alignment_mask;
 466        config->max_devices = info->max_devices;
 467        config->sdram_size = info->sdram_size;
 468
 469        return 0;
 470}
 471
 472static int iop_set_config_itl(struct hptiop_hba *hba,
 473                                struct hpt_iop_request_set_config *config)
 474{
 475        u32 req32;
 476        struct hpt_iop_request_set_config __iomem *req;
 477
 478        req32 = readl(&hba->u.itl.iop->inbound_queue);
 479        if (req32 == IOPMU_QUEUE_EMPTY)
 480                return -1;
 481
 482        req = (struct hpt_iop_request_set_config __iomem *)
 483                        ((unsigned long)hba->u.itl.iop + req32);
 484
 485        memcpy_toio((u8 __iomem *)req + sizeof(struct hpt_iop_request_header),
 486                (u8 *)config + sizeof(struct hpt_iop_request_header),
 487                sizeof(struct hpt_iop_request_set_config) -
 488                        sizeof(struct hpt_iop_request_header));
 489
 490        writel(0, &req->header.flags);
 491        writel(IOP_REQUEST_TYPE_SET_CONFIG, &req->header.type);
 492        writel(sizeof(struct hpt_iop_request_set_config), &req->header.size);
 493        writel(IOP_RESULT_PENDING, &req->header.result);
 494
 495        if (iop_send_sync_request_itl(hba, req, 20000)) {
 496                dprintk("Set config send cmd failed\n");
 497                return -1;
 498        }
 499
 500        writel(req32, &hba->u.itl.iop->outbound_queue);
 501        return 0;
 502}
 503
 504static int iop_set_config_mv(struct hptiop_hba *hba,
 505                                struct hpt_iop_request_set_config *config)
 506{
 507        struct hpt_iop_request_set_config *req = hba->u.mv.internal_req;
 508
 509        memcpy(req, config, sizeof(struct hpt_iop_request_set_config));
 510        req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
 511        req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_SET_CONFIG);
 512        req->header.size =
 513                cpu_to_le32(sizeof(struct hpt_iop_request_set_config));
 514        req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
 515        req->header.context = cpu_to_le32(IOP_REQUEST_TYPE_SET_CONFIG<<5);
 516        req->header.context_hi32 = 0;
 517
 518        if (iop_send_sync_request_mv(hba, 0, 20000)) {
 519                dprintk("Set config send cmd failed\n");
 520                return -1;
 521        }
 522
 523        return 0;
 524}
 525
 526static int iop_set_config_mvfrey(struct hptiop_hba *hba,
 527                                struct hpt_iop_request_set_config *config)
 528{
 529        struct hpt_iop_request_set_config *req =
 530                hba->u.mvfrey.internal_req.req_virt;
 531
 532        memcpy(req, config, sizeof(struct hpt_iop_request_set_config));
 533        req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
 534        req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_SET_CONFIG);
 535        req->header.size =
 536                cpu_to_le32(sizeof(struct hpt_iop_request_set_config));
 537        req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
 538        req->header.context = cpu_to_le32(IOP_REQUEST_TYPE_SET_CONFIG<<5);
 539        req->header.context_hi32 = 0;
 540
 541        if (iop_send_sync_request_mvfrey(hba, 0, 20000)) {
 542                dprintk("Set config send cmd failed\n");
 543                return -1;
 544        }
 545
 546        return 0;
 547}
 548
 549static void hptiop_enable_intr_itl(struct hptiop_hba *hba)
 550{
 551        writel(~(IOPMU_OUTBOUND_INT_POSTQUEUE | IOPMU_OUTBOUND_INT_MSG0),
 552                &hba->u.itl.iop->outbound_intmask);
 553}
 554
 555static void hptiop_enable_intr_mv(struct hptiop_hba *hba)
 556{
 557        writel(MVIOP_MU_OUTBOUND_INT_POSTQUEUE | MVIOP_MU_OUTBOUND_INT_MSG,
 558                &hba->u.mv.regs->outbound_intmask);
 559}
 560
 561static void hptiop_enable_intr_mvfrey(struct hptiop_hba *hba)
 562{
 563        writel(CPU_TO_F0_DRBL_MSG_BIT, &(hba->u.mvfrey.mu->f0_doorbell_enable));
 564        writel(0x1, &(hba->u.mvfrey.mu->isr_enable));
 565        writel(0x1010, &(hba->u.mvfrey.mu->pcie_f0_int_enable));
 566}
 567
 568static int hptiop_initialize_iop(struct hptiop_hba *hba)
 569{
 570        /* enable interrupts */
 571        hba->ops->enable_intr(hba);
 572
 573        hba->initialized = 1;
 574
 575        /* start background tasks */
 576        if (iop_send_sync_msg(hba,
 577                        IOPMU_INBOUND_MSG0_START_BACKGROUND_TASK, 5000)) {
 578                printk(KERN_ERR "scsi%d: fail to start background task\n",
 579                        hba->host->host_no);
 580                return -1;
 581        }
 582        return 0;
 583}
 584
 585static void __iomem *hptiop_map_pci_bar(struct hptiop_hba *hba, int index)
 586{
 587        u32 mem_base_phy, length;
 588        void __iomem *mem_base_virt;
 589
 590        struct pci_dev *pcidev = hba->pcidev;
 591
 592
 593        if (!(pci_resource_flags(pcidev, index) & IORESOURCE_MEM)) {
 594                printk(KERN_ERR "scsi%d: pci resource invalid\n",
 595                                hba->host->host_no);
 596                return NULL;
 597        }
 598
 599        mem_base_phy = pci_resource_start(pcidev, index);
 600        length = pci_resource_len(pcidev, index);
 601        mem_base_virt = ioremap(mem_base_phy, length);
 602
 603        if (!mem_base_virt) {
 604                printk(KERN_ERR "scsi%d: Fail to ioremap memory space\n",
 605                                hba->host->host_no);
 606                return NULL;
 607        }
 608        return mem_base_virt;
 609}
 610
 611static int hptiop_map_pci_bar_itl(struct hptiop_hba *hba)
 612{
 613        struct pci_dev *pcidev = hba->pcidev;
 614        hba->u.itl.iop = hptiop_map_pci_bar(hba, 0);
 615        if (hba->u.itl.iop == NULL)
 616                return -1;
 617        if ((pcidev->device & 0xff00) == 0x4400) {
 618                hba->u.itl.plx = hba->u.itl.iop;
 619                hba->u.itl.iop = hptiop_map_pci_bar(hba, 2);
 620                if (hba->u.itl.iop == NULL) {
 621                        iounmap(hba->u.itl.plx);
 622                        return -1;
 623                }
 624        }
 625        return 0;
 626}
 627
 628static void hptiop_unmap_pci_bar_itl(struct hptiop_hba *hba)
 629{
 630        if (hba->u.itl.plx)
 631                iounmap(hba->u.itl.plx);
 632        iounmap(hba->u.itl.iop);
 633}
 634
 635static int hptiop_map_pci_bar_mv(struct hptiop_hba *hba)
 636{
 637        hba->u.mv.regs = hptiop_map_pci_bar(hba, 0);
 638        if (hba->u.mv.regs == NULL)
 639                return -1;
 640
 641        hba->u.mv.mu = hptiop_map_pci_bar(hba, 2);
 642        if (hba->u.mv.mu == NULL) {
 643                iounmap(hba->u.mv.regs);
 644                return -1;
 645        }
 646
 647        return 0;
 648}
 649
 650static int hptiop_map_pci_bar_mvfrey(struct hptiop_hba *hba)
 651{
 652        hba->u.mvfrey.config = hptiop_map_pci_bar(hba, 0);
 653        if (hba->u.mvfrey.config == NULL)
 654                return -1;
 655
 656        hba->u.mvfrey.mu = hptiop_map_pci_bar(hba, 2);
 657        if (hba->u.mvfrey.mu == NULL) {
 658                iounmap(hba->u.mvfrey.config);
 659                return -1;
 660        }
 661
 662        return 0;
 663}
 664
 665static void hptiop_unmap_pci_bar_mv(struct hptiop_hba *hba)
 666{
 667        iounmap(hba->u.mv.regs);
 668        iounmap(hba->u.mv.mu);
 669}
 670
 671static void hptiop_unmap_pci_bar_mvfrey(struct hptiop_hba *hba)
 672{
 673        iounmap(hba->u.mvfrey.config);
 674        iounmap(hba->u.mvfrey.mu);
 675}
 676
 677static void hptiop_message_callback(struct hptiop_hba *hba, u32 msg)
 678{
 679        dprintk("iop message 0x%x\n", msg);
 680
 681        if (msg == IOPMU_INBOUND_MSG0_NOP ||
 682                msg == IOPMU_INBOUND_MSG0_RESET_COMM)
 683                hba->msg_done = 1;
 684
 685        if (!hba->initialized)
 686                return;
 687
 688        if (msg == IOPMU_INBOUND_MSG0_RESET) {
 689                atomic_set(&hba->resetting, 0);
 690                wake_up(&hba->reset_wq);
 691        }
 692        else if (msg <= IOPMU_INBOUND_MSG0_MAX)
 693                hba->msg_done = 1;
 694}
 695
 696static struct hptiop_request *get_req(struct hptiop_hba *hba)
 697{
 698        struct hptiop_request *ret;
 699
 700        dprintk("get_req : req=%p\n", hba->req_list);
 701
 702        ret = hba->req_list;
 703        if (ret)
 704                hba->req_list = ret->next;
 705
 706        return ret;
 707}
 708
 709static void free_req(struct hptiop_hba *hba, struct hptiop_request *req)
 710{
 711        dprintk("free_req(%d, %p)\n", req->index, req);
 712        req->next = hba->req_list;
 713        hba->req_list = req;
 714}
 715
 716static void hptiop_finish_scsi_req(struct hptiop_hba *hba, u32 tag,
 717                                struct hpt_iop_request_scsi_command *req)
 718{
 719        struct scsi_cmnd *scp;
 720
 721        dprintk("hptiop_finish_scsi_req: req=%p, type=%d, "
 722                        "result=%d, context=0x%x tag=%d\n",
 723                        req, req->header.type, req->header.result,
 724                        req->header.context, tag);
 725
 726        BUG_ON(!req->header.result);
 727        BUG_ON(req->header.type != cpu_to_le32(IOP_REQUEST_TYPE_SCSI_COMMAND));
 728
 729        scp = hba->reqs[tag].scp;
 730
 731        if (HPT_SCP(scp)->mapped)
 732                scsi_dma_unmap(scp);
 733
 734        switch (le32_to_cpu(req->header.result)) {
 735        case IOP_RESULT_SUCCESS:
 736                scsi_set_resid(scp,
 737                        scsi_bufflen(scp) - le32_to_cpu(req->dataxfer_length));
 738                scp->result = (DID_OK<<16);
 739                break;
 740        case IOP_RESULT_BAD_TARGET:
 741                scp->result = (DID_BAD_TARGET<<16);
 742                break;
 743        case IOP_RESULT_BUSY:
 744                scp->result = (DID_BUS_BUSY<<16);
 745                break;
 746        case IOP_RESULT_RESET:
 747                scp->result = (DID_RESET<<16);
 748                break;
 749        case IOP_RESULT_FAIL:
 750                scp->result = (DID_ERROR<<16);
 751                break;
 752        case IOP_RESULT_INVALID_REQUEST:
 753                scp->result = (DID_ABORT<<16);
 754                break;
 755        case IOP_RESULT_CHECK_CONDITION:
 756                scsi_set_resid(scp,
 757                        scsi_bufflen(scp) - le32_to_cpu(req->dataxfer_length));
 758                scp->result = SAM_STAT_CHECK_CONDITION;
 759                memcpy(scp->sense_buffer, &req->sg_list, SCSI_SENSE_BUFFERSIZE);
 760                goto skip_resid;
 761
 762        default:
 763                scp->result = DID_ABORT << 16;
 764                break;
 765        }
 766
 767        scsi_set_resid(scp,
 768                scsi_bufflen(scp) - le32_to_cpu(req->dataxfer_length));
 769
 770skip_resid:
 771        dprintk("scsi_done(%p)\n", scp);
 772        scp->scsi_done(scp);
 773        free_req(hba, &hba->reqs[tag]);
 774}
 775
 776static void hptiop_host_request_callback_itl(struct hptiop_hba *hba, u32 _tag)
 777{
 778        struct hpt_iop_request_scsi_command *req;
 779        u32 tag;
 780
 781        if (hba->iopintf_v2) {
 782                tag = _tag & ~IOPMU_QUEUE_REQUEST_RESULT_BIT;
 783                req = hba->reqs[tag].req_virt;
 784                if (likely(_tag & IOPMU_QUEUE_REQUEST_RESULT_BIT))
 785                        req->header.result = cpu_to_le32(IOP_RESULT_SUCCESS);
 786        } else {
 787                tag = _tag;
 788                req = hba->reqs[tag].req_virt;
 789        }
 790
 791        hptiop_finish_scsi_req(hba, tag, req);
 792}
 793
 794static void hptiop_iop_request_callback_itl(struct hptiop_hba *hba, u32 tag)
 795{
 796        struct hpt_iop_request_header __iomem *req;
 797        struct hpt_iop_request_ioctl_command __iomem *p;
 798        struct hpt_ioctl_k *arg;
 799
 800        req = (struct hpt_iop_request_header __iomem *)
 801                        ((unsigned long)hba->u.itl.iop + tag);
 802        dprintk("hptiop_iop_request_callback_itl: req=%p, type=%d, "
 803                        "result=%d, context=0x%x tag=%d\n",
 804                        req, readl(&req->type), readl(&req->result),
 805                        readl(&req->context), tag);
 806
 807        BUG_ON(!readl(&req->result));
 808        BUG_ON(readl(&req->type) != IOP_REQUEST_TYPE_IOCTL_COMMAND);
 809
 810        p = (struct hpt_iop_request_ioctl_command __iomem *)req;
 811        arg = (struct hpt_ioctl_k *)(unsigned long)
 812                (readl(&req->context) |
 813                        ((u64)readl(&req->context_hi32)<<32));
 814
 815        if (readl(&req->result) == IOP_RESULT_SUCCESS) {
 816                arg->result = HPT_IOCTL_RESULT_OK;
 817
 818                if (arg->outbuf_size)
 819                        memcpy_fromio(arg->outbuf,
 820                                &p->buf[(readl(&p->inbuf_size) + 3)& ~3],
 821                                arg->outbuf_size);
 822
 823                if (arg->bytes_returned)
 824                        *arg->bytes_returned = arg->outbuf_size;
 825        }
 826        else
 827                arg->result = HPT_IOCTL_RESULT_FAILED;
 828
 829        arg->done(arg);
 830        writel(tag, &hba->u.itl.iop->outbound_queue);
 831}
 832
 833static irqreturn_t hptiop_intr(int irq, void *dev_id)
 834{
 835        struct hptiop_hba  *hba = dev_id;
 836        int  handled;
 837        unsigned long flags;
 838
 839        spin_lock_irqsave(hba->host->host_lock, flags);
 840        handled = hba->ops->iop_intr(hba);
 841        spin_unlock_irqrestore(hba->host->host_lock, flags);
 842
 843        return handled;
 844}
 845
 846static int hptiop_buildsgl(struct scsi_cmnd *scp, struct hpt_iopsg *psg)
 847{
 848        struct Scsi_Host *host = scp->device->host;
 849        struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
 850        struct scatterlist *sg;
 851        int idx, nseg;
 852
 853        nseg = scsi_dma_map(scp);
 854        BUG_ON(nseg < 0);
 855        if (!nseg)
 856                return 0;
 857
 858        HPT_SCP(scp)->sgcnt = nseg;
 859        HPT_SCP(scp)->mapped = 1;
 860
 861        BUG_ON(HPT_SCP(scp)->sgcnt > hba->max_sg_descriptors);
 862
 863        scsi_for_each_sg(scp, sg, HPT_SCP(scp)->sgcnt, idx) {
 864                psg[idx].pci_address = cpu_to_le64(sg_dma_address(sg)) |
 865                        hba->ops->host_phy_flag;
 866                psg[idx].size = cpu_to_le32(sg_dma_len(sg));
 867                psg[idx].eot = (idx == HPT_SCP(scp)->sgcnt - 1) ?
 868                        cpu_to_le32(1) : 0;
 869        }
 870        return HPT_SCP(scp)->sgcnt;
 871}
 872
 873static void hptiop_post_req_itl(struct hptiop_hba *hba,
 874                                        struct hptiop_request *_req)
 875{
 876        struct hpt_iop_request_header *reqhdr = _req->req_virt;
 877
 878        reqhdr->context = cpu_to_le32(IOPMU_QUEUE_ADDR_HOST_BIT |
 879                                                        (u32)_req->index);
 880        reqhdr->context_hi32 = 0;
 881
 882        if (hba->iopintf_v2) {
 883                u32 size, size_bits;
 884
 885                size = le32_to_cpu(reqhdr->size);
 886                if (size < 256)
 887                        size_bits = IOPMU_QUEUE_REQUEST_SIZE_BIT;
 888                else if (size < 512)
 889                        size_bits = IOPMU_QUEUE_ADDR_HOST_BIT;
 890                else
 891                        size_bits = IOPMU_QUEUE_REQUEST_SIZE_BIT |
 892                                                IOPMU_QUEUE_ADDR_HOST_BIT;
 893                writel(_req->req_shifted_phy | size_bits,
 894                        &hba->u.itl.iop->inbound_queue);
 895        } else
 896                writel(_req->req_shifted_phy | IOPMU_QUEUE_ADDR_HOST_BIT,
 897                                        &hba->u.itl.iop->inbound_queue);
 898}
 899
 900static void hptiop_post_req_mv(struct hptiop_hba *hba,
 901                                        struct hptiop_request *_req)
 902{
 903        struct hpt_iop_request_header *reqhdr = _req->req_virt;
 904        u32 size, size_bit;
 905
 906        reqhdr->context = cpu_to_le32(_req->index<<8 |
 907                                        IOP_REQUEST_TYPE_SCSI_COMMAND<<5);
 908        reqhdr->context_hi32 = 0;
 909        size = le32_to_cpu(reqhdr->size);
 910
 911        if (size <= 256)
 912                size_bit = 0;
 913        else if (size <= 256*2)
 914                size_bit = 1;
 915        else if (size <= 256*3)
 916                size_bit = 2;
 917        else
 918                size_bit = 3;
 919
 920        mv_inbound_write((_req->req_shifted_phy << 5) |
 921                MVIOP_MU_QUEUE_ADDR_HOST_BIT | size_bit, hba);
 922}
 923
 924static void hptiop_post_req_mvfrey(struct hptiop_hba *hba,
 925                                        struct hptiop_request *_req)
 926{
 927        struct hpt_iop_request_header *reqhdr = _req->req_virt;
 928        u32 index;
 929
 930        reqhdr->flags |= cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT |
 931                        IOP_REQUEST_FLAG_ADDR_BITS |
 932                        ((_req->req_shifted_phy >> 11) & 0xffff0000));
 933        reqhdr->context = cpu_to_le32(IOPMU_QUEUE_ADDR_HOST_BIT |
 934                        (_req->index << 4) | reqhdr->type);
 935        reqhdr->context_hi32 = cpu_to_le32((_req->req_shifted_phy << 5) &
 936                        0xffffffff);
 937
 938        hba->u.mvfrey.inlist_wptr++;
 939        index = hba->u.mvfrey.inlist_wptr & 0x3fff;
 940
 941        if (index == hba->u.mvfrey.list_count) {
 942                index = 0;
 943                hba->u.mvfrey.inlist_wptr &= ~0x3fff;
 944                hba->u.mvfrey.inlist_wptr ^= CL_POINTER_TOGGLE;
 945        }
 946
 947        hba->u.mvfrey.inlist[index].addr =
 948                        (dma_addr_t)_req->req_shifted_phy << 5;
 949        hba->u.mvfrey.inlist[index].intrfc_len = (reqhdr->size + 3) / 4;
 950        writel(hba->u.mvfrey.inlist_wptr,
 951                &(hba->u.mvfrey.mu->inbound_write_ptr));
 952        readl(&(hba->u.mvfrey.mu->inbound_write_ptr));
 953}
 954
 955static int hptiop_reset_comm_itl(struct hptiop_hba *hba)
 956{
 957        return 0;
 958}
 959
 960static int hptiop_reset_comm_mv(struct hptiop_hba *hba)
 961{
 962        return 0;
 963}
 964
 965static int hptiop_reset_comm_mvfrey(struct hptiop_hba *hba)
 966{
 967        u32 list_count = hba->u.mvfrey.list_count;
 968
 969        if (iop_send_sync_msg(hba, IOPMU_INBOUND_MSG0_RESET_COMM, 3000))
 970                return -1;
 971
 972        /* wait 100ms for MCU ready */
 973        msleep(100);
 974
 975        writel(cpu_to_le32(hba->u.mvfrey.inlist_phy & 0xffffffff),
 976                        &(hba->u.mvfrey.mu->inbound_base));
 977        writel(cpu_to_le32((hba->u.mvfrey.inlist_phy >> 16) >> 16),
 978                        &(hba->u.mvfrey.mu->inbound_base_high));
 979
 980        writel(cpu_to_le32(hba->u.mvfrey.outlist_phy & 0xffffffff),
 981                        &(hba->u.mvfrey.mu->outbound_base));
 982        writel(cpu_to_le32((hba->u.mvfrey.outlist_phy >> 16) >> 16),
 983                        &(hba->u.mvfrey.mu->outbound_base_high));
 984
 985        writel(cpu_to_le32(hba->u.mvfrey.outlist_cptr_phy & 0xffffffff),
 986                        &(hba->u.mvfrey.mu->outbound_shadow_base));
 987        writel(cpu_to_le32((hba->u.mvfrey.outlist_cptr_phy >> 16) >> 16),
 988                        &(hba->u.mvfrey.mu->outbound_shadow_base_high));
 989
 990        hba->u.mvfrey.inlist_wptr = (list_count - 1) | CL_POINTER_TOGGLE;
 991        *hba->u.mvfrey.outlist_cptr = (list_count - 1) | CL_POINTER_TOGGLE;
 992        hba->u.mvfrey.outlist_rptr = list_count - 1;
 993        return 0;
 994}
 995
 996static int hptiop_queuecommand_lck(struct scsi_cmnd *scp,
 997                                void (*done)(struct scsi_cmnd *))
 998{
 999        struct Scsi_Host *host = scp->device->host;
1000        struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
1001        struct hpt_iop_request_scsi_command *req;
1002        int sg_count = 0;
1003        struct hptiop_request *_req;
1004
1005        BUG_ON(!done);
1006        scp->scsi_done = done;
1007
1008        _req = get_req(hba);
1009        if (_req == NULL) {
1010                dprintk("hptiop_queuecmd : no free req\n");
1011                return SCSI_MLQUEUE_HOST_BUSY;
1012        }
1013
1014        _req->scp = scp;
1015
1016        dprintk("hptiop_queuecmd(scp=%p) %d/%d/%d/%llu cdb=(%08x-%08x-%08x-%08x) "
1017                        "req_index=%d, req=%p\n",
1018                        scp,
1019                        host->host_no, scp->device->channel,
1020                        scp->device->id, scp->device->lun,
1021                        cpu_to_be32(((u32 *)scp->cmnd)[0]),
1022                        cpu_to_be32(((u32 *)scp->cmnd)[1]),
1023                        cpu_to_be32(((u32 *)scp->cmnd)[2]),
1024                        cpu_to_be32(((u32 *)scp->cmnd)[3]),
1025                        _req->index, _req->req_virt);
1026
1027        scp->result = 0;
1028
1029        if (scp->device->channel ||
1030                        (scp->device->id > hba->max_devices) ||
1031                        ((scp->device->id == (hba->max_devices-1)) && scp->device->lun)) {
1032                scp->result = DID_BAD_TARGET << 16;
1033                free_req(hba, _req);
1034                goto cmd_done;
1035        }
1036
1037        req = _req->req_virt;
1038
1039        /* build S/G table */
1040        sg_count = hptiop_buildsgl(scp, req->sg_list);
1041        if (!sg_count)
1042                HPT_SCP(scp)->mapped = 0;
1043
1044        req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
1045        req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_SCSI_COMMAND);
1046        req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
1047        req->dataxfer_length = cpu_to_le32(scsi_bufflen(scp));
1048        req->channel = scp->device->channel;
1049        req->target = scp->device->id;
1050        req->lun = scp->device->lun;
1051        req->header.size = cpu_to_le32(
1052                                sizeof(struct hpt_iop_request_scsi_command)
1053                                 - sizeof(struct hpt_iopsg)
1054                                 + sg_count * sizeof(struct hpt_iopsg));
1055
1056        memcpy(req->cdb, scp->cmnd, sizeof(req->cdb));
1057        hba->ops->post_req(hba, _req);
1058        return 0;
1059
1060cmd_done:
1061        dprintk("scsi_done(scp=%p)\n", scp);
1062        scp->scsi_done(scp);
1063        return 0;
1064}
1065
1066static DEF_SCSI_QCMD(hptiop_queuecommand)
1067
1068static const char *hptiop_info(struct Scsi_Host *host)
1069{
1070        return driver_name_long;
1071}
1072
1073static int hptiop_reset_hba(struct hptiop_hba *hba)
1074{
1075        if (atomic_xchg(&hba->resetting, 1) == 0) {
1076                atomic_inc(&hba->reset_count);
1077                hba->ops->post_msg(hba, IOPMU_INBOUND_MSG0_RESET);
1078        }
1079
1080        wait_event_timeout(hba->reset_wq,
1081                        atomic_read(&hba->resetting) == 0, 60 * HZ);
1082
1083        if (atomic_read(&hba->resetting)) {
1084                /* IOP is in unknown state, abort reset */
1085                printk(KERN_ERR "scsi%d: reset failed\n", hba->host->host_no);
1086                return -1;
1087        }
1088
1089        if (iop_send_sync_msg(hba,
1090                IOPMU_INBOUND_MSG0_START_BACKGROUND_TASK, 5000)) {
1091                dprintk("scsi%d: fail to start background task\n",
1092                                hba->host->host_no);
1093        }
1094
1095        return 0;
1096}
1097
1098static int hptiop_reset(struct scsi_cmnd *scp)
1099{
1100        struct hptiop_hba * hba = (struct hptiop_hba *)scp->device->host->hostdata;
1101
1102        printk(KERN_WARNING "hptiop_reset(%d/%d/%d)\n",
1103               scp->device->host->host_no, -1, -1);
1104
1105        return hptiop_reset_hba(hba)? FAILED : SUCCESS;
1106}
1107
1108static int hptiop_adjust_disk_queue_depth(struct scsi_device *sdev,
1109                                          int queue_depth)
1110{
1111        struct hptiop_hba *hba = (struct hptiop_hba *)sdev->host->hostdata;
1112
1113        if (queue_depth > hba->max_requests)
1114                queue_depth = hba->max_requests;
1115        return scsi_change_queue_depth(sdev, queue_depth);
1116}
1117
1118static ssize_t hptiop_show_version(struct device *dev,
1119                                   struct device_attribute *attr, char *buf)
1120{
1121        return snprintf(buf, PAGE_SIZE, "%s\n", driver_ver);
1122}
1123
1124static ssize_t hptiop_show_fw_version(struct device *dev,
1125                                      struct device_attribute *attr, char *buf)
1126{
1127        struct Scsi_Host *host = class_to_shost(dev);
1128        struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
1129
1130        return snprintf(buf, PAGE_SIZE, "%d.%d.%d.%d\n",
1131                                hba->firmware_version >> 24,
1132                                (hba->firmware_version >> 16) & 0xff,
1133                                (hba->firmware_version >> 8) & 0xff,
1134                                hba->firmware_version & 0xff);
1135}
1136
1137static struct device_attribute hptiop_attr_version = {
1138        .attr = {
1139                .name = "driver-version",
1140                .mode = S_IRUGO,
1141        },
1142        .show = hptiop_show_version,
1143};
1144
1145static struct device_attribute hptiop_attr_fw_version = {
1146        .attr = {
1147                .name = "firmware-version",
1148                .mode = S_IRUGO,
1149        },
1150        .show = hptiop_show_fw_version,
1151};
1152
1153static struct device_attribute *hptiop_attrs[] = {
1154        &hptiop_attr_version,
1155        &hptiop_attr_fw_version,
1156        NULL
1157};
1158
1159static int hptiop_slave_config(struct scsi_device *sdev)
1160{
1161        if (sdev->type == TYPE_TAPE)
1162                blk_queue_max_hw_sectors(sdev->request_queue, 8192);
1163
1164        return 0;
1165}
1166
1167static struct scsi_host_template driver_template = {
1168        .module                     = THIS_MODULE,
1169        .name                       = driver_name,
1170        .queuecommand               = hptiop_queuecommand,
1171        .eh_host_reset_handler      = hptiop_reset,
1172        .info                       = hptiop_info,
1173        .emulated                   = 0,
1174        .proc_name                  = driver_name,
1175        .shost_attrs                = hptiop_attrs,
1176        .slave_configure            = hptiop_slave_config,
1177        .this_id                    = -1,
1178        .change_queue_depth         = hptiop_adjust_disk_queue_depth,
1179};
1180
1181static int hptiop_internal_memalloc_itl(struct hptiop_hba *hba)
1182{
1183        return 0;
1184}
1185
1186static int hptiop_internal_memalloc_mv(struct hptiop_hba *hba)
1187{
1188        hba->u.mv.internal_req = dma_alloc_coherent(&hba->pcidev->dev,
1189                        0x800, &hba->u.mv.internal_req_phy, GFP_KERNEL);
1190        if (hba->u.mv.internal_req)
1191                return 0;
1192        else
1193                return -1;
1194}
1195
1196static int hptiop_internal_memalloc_mvfrey(struct hptiop_hba *hba)
1197{
1198        u32 list_count = readl(&hba->u.mvfrey.mu->inbound_conf_ctl);
1199        char *p;
1200        dma_addr_t phy;
1201
1202        BUG_ON(hba->max_request_size == 0);
1203
1204        if (list_count == 0) {
1205                BUG_ON(1);
1206                return -1;
1207        }
1208
1209        list_count >>= 16;
1210
1211        hba->u.mvfrey.list_count = list_count;
1212        hba->u.mvfrey.internal_mem_size = 0x800 +
1213                        list_count * sizeof(struct mvfrey_inlist_entry) +
1214                        list_count * sizeof(struct mvfrey_outlist_entry) +
1215                        sizeof(int);
1216
1217        p = dma_alloc_coherent(&hba->pcidev->dev,
1218                        hba->u.mvfrey.internal_mem_size, &phy, GFP_KERNEL);
1219        if (!p)
1220                return -1;
1221
1222        hba->u.mvfrey.internal_req.req_virt = p;
1223        hba->u.mvfrey.internal_req.req_shifted_phy = phy >> 5;
1224        hba->u.mvfrey.internal_req.scp = NULL;
1225        hba->u.mvfrey.internal_req.next = NULL;
1226
1227        p += 0x800;
1228        phy += 0x800;
1229
1230        hba->u.mvfrey.inlist = (struct mvfrey_inlist_entry *)p;
1231        hba->u.mvfrey.inlist_phy = phy;
1232
1233        p += list_count * sizeof(struct mvfrey_inlist_entry);
1234        phy += list_count * sizeof(struct mvfrey_inlist_entry);
1235
1236        hba->u.mvfrey.outlist = (struct mvfrey_outlist_entry *)p;
1237        hba->u.mvfrey.outlist_phy = phy;
1238
1239        p += list_count * sizeof(struct mvfrey_outlist_entry);
1240        phy += list_count * sizeof(struct mvfrey_outlist_entry);
1241
1242        hba->u.mvfrey.outlist_cptr = (__le32 *)p;
1243        hba->u.mvfrey.outlist_cptr_phy = phy;
1244
1245        return 0;
1246}
1247
1248static int hptiop_internal_memfree_itl(struct hptiop_hba *hba)
1249{
1250        return 0;
1251}
1252
1253static int hptiop_internal_memfree_mv(struct hptiop_hba *hba)
1254{
1255        if (hba->u.mv.internal_req) {
1256                dma_free_coherent(&hba->pcidev->dev, 0x800,
1257                        hba->u.mv.internal_req, hba->u.mv.internal_req_phy);
1258                return 0;
1259        } else
1260                return -1;
1261}
1262
1263static int hptiop_internal_memfree_mvfrey(struct hptiop_hba *hba)
1264{
1265        if (hba->u.mvfrey.internal_req.req_virt) {
1266                dma_free_coherent(&hba->pcidev->dev,
1267                        hba->u.mvfrey.internal_mem_size,
1268                        hba->u.mvfrey.internal_req.req_virt,
1269                        (dma_addr_t)
1270                        hba->u.mvfrey.internal_req.req_shifted_phy << 5);
1271                return 0;
1272        } else
1273                return -1;
1274}
1275
1276static int hptiop_probe(struct pci_dev *pcidev, const struct pci_device_id *id)
1277{
1278        struct Scsi_Host *host = NULL;
1279        struct hptiop_hba *hba;
1280        struct hptiop_adapter_ops *iop_ops;
1281        struct hpt_iop_request_get_config iop_config;
1282        struct hpt_iop_request_set_config set_config;
1283        dma_addr_t start_phy;
1284        void *start_virt;
1285        u32 offset, i, req_size;
1286        int rc;
1287
1288        dprintk("hptiop_probe(%p)\n", pcidev);
1289
1290        if (pci_enable_device(pcidev)) {
1291                printk(KERN_ERR "hptiop: fail to enable pci device\n");
1292                return -ENODEV;
1293        }
1294
1295        printk(KERN_INFO "adapter at PCI %d:%d:%d, IRQ %d\n",
1296                pcidev->bus->number, pcidev->devfn >> 3, pcidev->devfn & 7,
1297                pcidev->irq);
1298
1299        pci_set_master(pcidev);
1300
1301        /* Enable 64bit DMA if possible */
1302        iop_ops = (struct hptiop_adapter_ops *)id->driver_data;
1303        rc = dma_set_mask(&pcidev->dev,
1304                          DMA_BIT_MASK(iop_ops->hw_dma_bit_mask));
1305        if (rc)
1306                rc = dma_set_mask(&pcidev->dev, DMA_BIT_MASK(32));
1307
1308        if (rc) {
1309                printk(KERN_ERR "hptiop: fail to set dma_mask\n");
1310                goto disable_pci_device;
1311        }
1312
1313        if (pci_request_regions(pcidev, driver_name)) {
1314                printk(KERN_ERR "hptiop: pci_request_regions failed\n");
1315                goto disable_pci_device;
1316        }
1317
1318        host = scsi_host_alloc(&driver_template, sizeof(struct hptiop_hba));
1319        if (!host) {
1320                printk(KERN_ERR "hptiop: fail to alloc scsi host\n");
1321                goto free_pci_regions;
1322        }
1323
1324        hba = (struct hptiop_hba *)host->hostdata;
1325        memset(hba, 0, sizeof(struct hptiop_hba));
1326
1327        hba->ops = iop_ops;
1328        hba->pcidev = pcidev;
1329        hba->host = host;
1330        hba->initialized = 0;
1331        hba->iopintf_v2 = 0;
1332
1333        atomic_set(&hba->resetting, 0);
1334        atomic_set(&hba->reset_count, 0);
1335
1336        init_waitqueue_head(&hba->reset_wq);
1337        init_waitqueue_head(&hba->ioctl_wq);
1338
1339        host->max_lun = 128;
1340        host->max_channel = 0;
1341        host->io_port = 0;
1342        host->n_io_port = 0;
1343        host->irq = pcidev->irq;
1344
1345        if (hba->ops->map_pci_bar(hba))
1346                goto free_scsi_host;
1347
1348        if (hba->ops->iop_wait_ready(hba, 20000)) {
1349                printk(KERN_ERR "scsi%d: firmware not ready\n",
1350                                hba->host->host_no);
1351                goto unmap_pci_bar;
1352        }
1353
1354        if (hba->ops->family == MV_BASED_IOP) {
1355                if (hba->ops->internal_memalloc(hba)) {
1356                        printk(KERN_ERR "scsi%d: internal_memalloc failed\n",
1357                                hba->host->host_no);
1358                        goto unmap_pci_bar;
1359                }
1360        }
1361
1362        if (hba->ops->get_config(hba, &iop_config)) {
1363                printk(KERN_ERR "scsi%d: get config failed\n",
1364                                hba->host->host_no);
1365                goto unmap_pci_bar;
1366        }
1367
1368        hba->max_requests = min(le32_to_cpu(iop_config.max_requests),
1369                                HPTIOP_MAX_REQUESTS);
1370        hba->max_devices = le32_to_cpu(iop_config.max_devices);
1371        hba->max_request_size = le32_to_cpu(iop_config.request_size);
1372        hba->max_sg_descriptors = le32_to_cpu(iop_config.max_sg_count);
1373        hba->firmware_version = le32_to_cpu(iop_config.firmware_version);
1374        hba->interface_version = le32_to_cpu(iop_config.interface_version);
1375        hba->sdram_size = le32_to_cpu(iop_config.sdram_size);
1376
1377        if (hba->ops->family == MVFREY_BASED_IOP) {
1378                if (hba->ops->internal_memalloc(hba)) {
1379                        printk(KERN_ERR "scsi%d: internal_memalloc failed\n",
1380                                hba->host->host_no);
1381                        goto unmap_pci_bar;
1382                }
1383                if (hba->ops->reset_comm(hba)) {
1384                        printk(KERN_ERR "scsi%d: reset comm failed\n",
1385                                        hba->host->host_no);
1386                        goto unmap_pci_bar;
1387                }
1388        }
1389
1390        if (hba->firmware_version > 0x01020000 ||
1391                        hba->interface_version > 0x01020000)
1392                hba->iopintf_v2 = 1;
1393
1394        host->max_sectors = le32_to_cpu(iop_config.data_transfer_length) >> 9;
1395        host->max_id = le32_to_cpu(iop_config.max_devices);
1396        host->sg_tablesize = le32_to_cpu(iop_config.max_sg_count);
1397        host->can_queue = le32_to_cpu(iop_config.max_requests);
1398        host->cmd_per_lun = le32_to_cpu(iop_config.max_requests);
1399        host->max_cmd_len = 16;
1400
1401        req_size = sizeof(struct hpt_iop_request_scsi_command)
1402                + sizeof(struct hpt_iopsg) * (hba->max_sg_descriptors - 1);
1403        if ((req_size & 0x1f) != 0)
1404                req_size = (req_size + 0x1f) & ~0x1f;
1405
1406        memset(&set_config, 0, sizeof(struct hpt_iop_request_set_config));
1407        set_config.iop_id = cpu_to_le32(host->host_no);
1408        set_config.vbus_id = cpu_to_le16(host->host_no);
1409        set_config.max_host_request_size = cpu_to_le16(req_size);
1410
1411        if (hba->ops->set_config(hba, &set_config)) {
1412                printk(KERN_ERR "scsi%d: set config failed\n",
1413                                hba->host->host_no);
1414                goto unmap_pci_bar;
1415        }
1416
1417        pci_set_drvdata(pcidev, host);
1418
1419        if (request_irq(pcidev->irq, hptiop_intr, IRQF_SHARED,
1420                                        driver_name, hba)) {
1421                printk(KERN_ERR "scsi%d: request irq %d failed\n",
1422                                        hba->host->host_no, pcidev->irq);
1423                goto unmap_pci_bar;
1424        }
1425
1426        /* Allocate request mem */
1427
1428        dprintk("req_size=%d, max_requests=%d\n", req_size, hba->max_requests);
1429
1430        hba->req_size = req_size;
1431        hba->req_list = NULL;
1432
1433        for (i = 0; i < hba->max_requests; i++) {
1434                start_virt = dma_alloc_coherent(&pcidev->dev,
1435                                        hba->req_size + 0x20,
1436                                        &start_phy, GFP_KERNEL);
1437
1438                if (!start_virt) {
1439                        printk(KERN_ERR "scsi%d: fail to alloc request mem\n",
1440                                                hba->host->host_no);
1441                        goto free_request_mem;
1442                }
1443
1444                hba->dma_coherent[i] = start_virt;
1445                hba->dma_coherent_handle[i] = start_phy;
1446
1447                if ((start_phy & 0x1f) != 0) {
1448                        offset = ((start_phy + 0x1f) & ~0x1f) - start_phy;
1449                        start_phy += offset;
1450                        start_virt += offset;
1451                }
1452
1453                hba->reqs[i].next = NULL;
1454                hba->reqs[i].req_virt = start_virt;
1455                hba->reqs[i].req_shifted_phy = start_phy >> 5;
1456                hba->reqs[i].index = i;
1457                free_req(hba, &hba->reqs[i]);
1458        }
1459
1460        /* Enable Interrupt and start background task */
1461        if (hptiop_initialize_iop(hba))
1462                goto free_request_mem;
1463
1464        if (scsi_add_host(host, &pcidev->dev)) {
1465                printk(KERN_ERR "scsi%d: scsi_add_host failed\n",
1466                                        hba->host->host_no);
1467                goto free_request_mem;
1468        }
1469
1470        scsi_scan_host(host);
1471
1472        dprintk("scsi%d: hptiop_probe successfully\n", hba->host->host_no);
1473        return 0;
1474
1475free_request_mem:
1476        for (i = 0; i < hba->max_requests; i++) {
1477                if (hba->dma_coherent[i] && hba->dma_coherent_handle[i])
1478                        dma_free_coherent(&hba->pcidev->dev,
1479                                        hba->req_size + 0x20,
1480                                        hba->dma_coherent[i],
1481                                        hba->dma_coherent_handle[i]);
1482                else
1483                        break;
1484        }
1485
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        u32 i;
1554
1555        dprintk("scsi%d: hptiop_remove\n", hba->host->host_no);
1556
1557        scsi_remove_host(host);
1558
1559        hptiop_shutdown(pcidev);
1560
1561        free_irq(hba->pcidev->irq, hba);
1562
1563        for (i = 0; i < hba->max_requests; i++) {
1564                if (hba->dma_coherent[i] && hba->dma_coherent_handle[i])
1565                        dma_free_coherent(&hba->pcidev->dev,
1566                                        hba->req_size + 0x20,
1567                                        hba->dma_coherent[i],
1568                                        hba->dma_coherent_handle[i]);
1569                else
1570                        break;
1571        }
1572
1573        hba->ops->internal_memfree(hba);
1574
1575        hba->ops->unmap_pci_bar(hba);
1576
1577        pci_release_regions(hba->pcidev);
1578        pci_set_drvdata(hba->pcidev, NULL);
1579        pci_disable_device(hba->pcidev);
1580
1581        scsi_host_put(host);
1582}
1583
1584static struct hptiop_adapter_ops hptiop_itl_ops = {
1585        .family            = INTEL_BASED_IOP,
1586        .iop_wait_ready    = iop_wait_ready_itl,
1587        .internal_memalloc = hptiop_internal_memalloc_itl,
1588        .internal_memfree  = hptiop_internal_memfree_itl,
1589        .map_pci_bar       = hptiop_map_pci_bar_itl,
1590        .unmap_pci_bar     = hptiop_unmap_pci_bar_itl,
1591        .enable_intr       = hptiop_enable_intr_itl,
1592        .disable_intr      = hptiop_disable_intr_itl,
1593        .get_config        = iop_get_config_itl,
1594        .set_config        = iop_set_config_itl,
1595        .iop_intr          = iop_intr_itl,
1596        .post_msg          = hptiop_post_msg_itl,
1597        .post_req          = hptiop_post_req_itl,
1598        .hw_dma_bit_mask   = 64,
1599        .reset_comm        = hptiop_reset_comm_itl,
1600        .host_phy_flag     = cpu_to_le64(0),
1601};
1602
1603static struct hptiop_adapter_ops hptiop_mv_ops = {
1604        .family            = MV_BASED_IOP,
1605        .iop_wait_ready    = iop_wait_ready_mv,
1606        .internal_memalloc = hptiop_internal_memalloc_mv,
1607        .internal_memfree  = hptiop_internal_memfree_mv,
1608        .map_pci_bar       = hptiop_map_pci_bar_mv,
1609        .unmap_pci_bar     = hptiop_unmap_pci_bar_mv,
1610        .enable_intr       = hptiop_enable_intr_mv,
1611        .disable_intr      = hptiop_disable_intr_mv,
1612        .get_config        = iop_get_config_mv,
1613        .set_config        = iop_set_config_mv,
1614        .iop_intr          = iop_intr_mv,
1615        .post_msg          = hptiop_post_msg_mv,
1616        .post_req          = hptiop_post_req_mv,
1617        .hw_dma_bit_mask   = 33,
1618        .reset_comm        = hptiop_reset_comm_mv,
1619        .host_phy_flag     = cpu_to_le64(0),
1620};
1621
1622static struct hptiop_adapter_ops hptiop_mvfrey_ops = {
1623        .family            = MVFREY_BASED_IOP,
1624        .iop_wait_ready    = iop_wait_ready_mvfrey,
1625        .internal_memalloc = hptiop_internal_memalloc_mvfrey,
1626        .internal_memfree  = hptiop_internal_memfree_mvfrey,
1627        .map_pci_bar       = hptiop_map_pci_bar_mvfrey,
1628        .unmap_pci_bar     = hptiop_unmap_pci_bar_mvfrey,
1629        .enable_intr       = hptiop_enable_intr_mvfrey,
1630        .disable_intr      = hptiop_disable_intr_mvfrey,
1631        .get_config        = iop_get_config_mvfrey,
1632        .set_config        = iop_set_config_mvfrey,
1633        .iop_intr          = iop_intr_mvfrey,
1634        .post_msg          = hptiop_post_msg_mvfrey,
1635        .post_req          = hptiop_post_req_mvfrey,
1636        .hw_dma_bit_mask   = 64,
1637        .reset_comm        = hptiop_reset_comm_mvfrey,
1638        .host_phy_flag     = cpu_to_le64(1),
1639};
1640
1641static struct pci_device_id hptiop_id_table[] = {
1642        { PCI_VDEVICE(TTI, 0x3220), (kernel_ulong_t)&hptiop_itl_ops },
1643        { PCI_VDEVICE(TTI, 0x3320), (kernel_ulong_t)&hptiop_itl_ops },
1644        { PCI_VDEVICE(TTI, 0x3410), (kernel_ulong_t)&hptiop_itl_ops },
1645        { PCI_VDEVICE(TTI, 0x3510), (kernel_ulong_t)&hptiop_itl_ops },
1646        { PCI_VDEVICE(TTI, 0x3511), (kernel_ulong_t)&hptiop_itl_ops },
1647        { PCI_VDEVICE(TTI, 0x3520), (kernel_ulong_t)&hptiop_itl_ops },
1648        { PCI_VDEVICE(TTI, 0x3521), (kernel_ulong_t)&hptiop_itl_ops },
1649        { PCI_VDEVICE(TTI, 0x3522), (kernel_ulong_t)&hptiop_itl_ops },
1650        { PCI_VDEVICE(TTI, 0x3530), (kernel_ulong_t)&hptiop_itl_ops },
1651        { PCI_VDEVICE(TTI, 0x3540), (kernel_ulong_t)&hptiop_itl_ops },
1652        { PCI_VDEVICE(TTI, 0x3560), (kernel_ulong_t)&hptiop_itl_ops },
1653        { PCI_VDEVICE(TTI, 0x4210), (kernel_ulong_t)&hptiop_itl_ops },
1654        { PCI_VDEVICE(TTI, 0x4211), (kernel_ulong_t)&hptiop_itl_ops },
1655        { PCI_VDEVICE(TTI, 0x4310), (kernel_ulong_t)&hptiop_itl_ops },
1656        { PCI_VDEVICE(TTI, 0x4311), (kernel_ulong_t)&hptiop_itl_ops },
1657        { PCI_VDEVICE(TTI, 0x4320), (kernel_ulong_t)&hptiop_itl_ops },
1658        { PCI_VDEVICE(TTI, 0x4321), (kernel_ulong_t)&hptiop_itl_ops },
1659        { PCI_VDEVICE(TTI, 0x4322), (kernel_ulong_t)&hptiop_itl_ops },
1660        { PCI_VDEVICE(TTI, 0x4400), (kernel_ulong_t)&hptiop_itl_ops },
1661        { PCI_VDEVICE(TTI, 0x3120), (kernel_ulong_t)&hptiop_mv_ops },
1662        { PCI_VDEVICE(TTI, 0x3122), (kernel_ulong_t)&hptiop_mv_ops },
1663        { PCI_VDEVICE(TTI, 0x3020), (kernel_ulong_t)&hptiop_mv_ops },
1664        { PCI_VDEVICE(TTI, 0x4520), (kernel_ulong_t)&hptiop_mvfrey_ops },
1665        { PCI_VDEVICE(TTI, 0x4522), (kernel_ulong_t)&hptiop_mvfrey_ops },
1666        { PCI_VDEVICE(TTI, 0x3610), (kernel_ulong_t)&hptiop_mvfrey_ops },
1667        { PCI_VDEVICE(TTI, 0x3611), (kernel_ulong_t)&hptiop_mvfrey_ops },
1668        { PCI_VDEVICE(TTI, 0x3620), (kernel_ulong_t)&hptiop_mvfrey_ops },
1669        { PCI_VDEVICE(TTI, 0x3622), (kernel_ulong_t)&hptiop_mvfrey_ops },
1670        { PCI_VDEVICE(TTI, 0x3640), (kernel_ulong_t)&hptiop_mvfrey_ops },
1671        { PCI_VDEVICE(TTI, 0x3660), (kernel_ulong_t)&hptiop_mvfrey_ops },
1672        { PCI_VDEVICE(TTI, 0x3680), (kernel_ulong_t)&hptiop_mvfrey_ops },
1673        { PCI_VDEVICE(TTI, 0x3690), (kernel_ulong_t)&hptiop_mvfrey_ops },
1674        {},
1675};
1676
1677MODULE_DEVICE_TABLE(pci, hptiop_id_table);
1678
1679static struct pci_driver hptiop_pci_driver = {
1680        .name       = driver_name,
1681        .id_table   = hptiop_id_table,
1682        .probe      = hptiop_probe,
1683        .remove     = hptiop_remove,
1684        .shutdown   = hptiop_shutdown,
1685};
1686
1687static int __init hptiop_module_init(void)
1688{
1689        printk(KERN_INFO "%s %s\n", driver_name_long, driver_ver);
1690        return pci_register_driver(&hptiop_pci_driver);
1691}
1692
1693static void __exit hptiop_module_exit(void)
1694{
1695        pci_unregister_driver(&hptiop_pci_driver);
1696}
1697
1698
1699module_init(hptiop_module_init);
1700module_exit(hptiop_module_exit);
1701
1702MODULE_LICENSE("GPL");
1703
1704
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