drivers/scsi/mvsas/mv_init.c

   1 /*
   2  * Marvell 88SE64xx/88SE94xx pci init
   3  *
   4  * Copyright 2007 Red Hat, Inc.
   5  * Copyright 2008 Marvell. <[email protected]>
   6  * Copyright 2009-2011 Marvell. <[email protected]>
   7  *
   8  * This file is licensed under GPLv2.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; version 2 of the
  13  * License.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  23  * USA
  24 */
  25
  26
  27 #include "mv_sas.h"
  28
  29 int interrupt_coalescing = 0x80;
  30
  31 static struct scsi_transport_template *mvs_stt;
  32 static const struct mvs_chip_info mvs_chips[] = {
  33         [chip_6320] =   { 1, 2, 0x400, 17, 16, 6,  9, &mvs_64xx_dispatch, },
  34         [chip_6440] =   { 1, 4, 0x400, 17, 16, 6,  9, &mvs_64xx_dispatch, },
  35         [chip_6485] =   { 1, 8, 0x800, 33, 32, 6, 10, &mvs_64xx_dispatch, },
  36         [chip_9180] =   { 2, 4, 0x800, 17, 64, 8,  9, &mvs_94xx_dispatch, },
  37         [chip_9480] =   { 2, 4, 0x800, 17, 64, 8,  9, &mvs_94xx_dispatch, },
  38         [chip_9445] =   { 1, 4, 0x800, 17, 64, 8, 11, &mvs_94xx_dispatch, },
  39         [chip_9485] =   { 2, 4, 0x800, 17, 64, 8, 11, &mvs_94xx_dispatch, },
  40         [chip_1300] =   { 1, 4, 0x400, 17, 16, 6,  9, &mvs_64xx_dispatch, },
  41         [chip_1320] =   { 2, 4, 0x800, 17, 64, 8,  9, &mvs_94xx_dispatch, },
  42 };
  43
  44 struct device_attribute *mvst_host_attrs[];
  45
  46 #define SOC_SAS_NUM 2
  47
  48 static struct scsi_host_template mvs_sht = {
  49         .module                 = THIS_MODULE,
  50         .name                   = DRV_NAME,
  51         .queuecommand           = sas_queuecommand,
  52         .target_alloc           = sas_target_alloc,
  53         .slave_configure        = sas_slave_configure,
  54         .scan_finished          = mvs_scan_finished,
  55         .scan_start             = mvs_scan_start,
  56         .change_queue_depth     = sas_change_queue_depth,
  57         .bios_param             = sas_bios_param,
  58         .can_queue              = 1,
  59         .this_id                = -1,
  60         .sg_tablesize           = SG_ALL,
  61         .max_sectors            = SCSI_DEFAULT_MAX_SECTORS,
  62         .use_clustering         = ENABLE_CLUSTERING,
  63         .eh_device_reset_handler = sas_eh_device_reset_handler,
  64         .eh_bus_reset_handler   = sas_eh_bus_reset_handler,
  65         .target_destroy         = sas_target_destroy,
  66         .ioctl                  = sas_ioctl,
  67         .shost_attrs            = mvst_host_attrs,
  68         .track_queue_depth      = 1,
  69 };
  70
  71 static struct sas_domain_function_template mvs_transport_ops = {
  72         .lldd_dev_found         = mvs_dev_found,
  73         .lldd_dev_gone          = mvs_dev_gone,
  74         .lldd_execute_task      = mvs_queue_command,
  75         .lldd_control_phy       = mvs_phy_control,
  76
  77         .lldd_abort_task        = mvs_abort_task,
  78         .lldd_abort_task_set    = mvs_abort_task_set,
  79         .lldd_clear_aca         = mvs_clear_aca,
  80         .lldd_clear_task_set    = mvs_clear_task_set,
  81         .lldd_I_T_nexus_reset   = mvs_I_T_nexus_reset,
  82         .lldd_lu_reset          = mvs_lu_reset,
  83         .lldd_query_task        = mvs_query_task,
  84         .lldd_port_formed       = mvs_port_formed,
  85         .lldd_port_deformed     = mvs_port_deformed,
  86
  87         .lldd_write_gpio        = mvs_gpio_write,
  88
  89 };
  90
  91 static void mvs_phy_init(struct mvs_info *mvi, int phy_id)
  92 {
  93         struct mvs_phy *phy = &mvi->phy[phy_id];
  94         struct asd_sas_phy *sas_phy = &phy->sas_phy;
  95
  96         phy->mvi = mvi;
  97         phy->port = NULL;
  98         init_timer(&phy->timer);
  99         sas_phy->enabled = (phy_id < mvi->chip->n_phy) ? 1 : 0;
 100         sas_phy->class = SAS;
 101         sas_phy->iproto = SAS_PROTOCOL_ALL;
 102         sas_phy->tproto = 0;
 103         sas_phy->type = PHY_TYPE_PHYSICAL;
 104         sas_phy->role = PHY_ROLE_INITIATOR;
 105         sas_phy->oob_mode = OOB_NOT_CONNECTED;
 106         sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
 107
 108         sas_phy->id = phy_id;
 109         sas_phy->sas_addr = &mvi->sas_addr[0];
 110         sas_phy->frame_rcvd = &phy->frame_rcvd[0];
 111         sas_phy->ha = (struct sas_ha_struct *)mvi->shost->hostdata;
 112         sas_phy->lldd_phy = phy;
 113 }
 114
 115 static void mvs_free(struct mvs_info *mvi)
 116 {
 117         struct mvs_wq *mwq;
 118         int slot_nr;
 119
 120         if (!mvi)
 121                 return;
 122
 123         if (mvi->flags & MVF_FLAG_SOC)
 124                 slot_nr = MVS_SOC_SLOTS;
 125         else
 126                 slot_nr = MVS_CHIP_SLOT_SZ;
 127
 128         if (mvi->dma_pool)
 129                 pci_pool_destroy(mvi->dma_pool);
 130
 131         if (mvi->tx)
 132                 dma_free_coherent(mvi->dev,
 133                                   sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ,
 134                                   mvi->tx, mvi->tx_dma);
 135         if (mvi->rx_fis)
 136                 dma_free_coherent(mvi->dev, MVS_RX_FISL_SZ,
 137                                   mvi->rx_fis, mvi->rx_fis_dma);
 138         if (mvi->rx)
 139                 dma_free_coherent(mvi->dev,
 140                                   sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1),
 141                                   mvi->rx, mvi->rx_dma);
 142         if (mvi->slot)
 143                 dma_free_coherent(mvi->dev,
 144                                   sizeof(*mvi->slot) * slot_nr,
 145                                   mvi->slot, mvi->slot_dma);
 146
 147         if (mvi->bulk_buffer)
 148                 dma_free_coherent(mvi->dev, TRASH_BUCKET_SIZE,
 149                                   mvi->bulk_buffer, mvi->bulk_buffer_dma);
 150         if (mvi->bulk_buffer1)
 151                 dma_free_coherent(mvi->dev, TRASH_BUCKET_SIZE,
 152                                   mvi->bulk_buffer1, mvi->bulk_buffer_dma1);
 153
 154         MVS_CHIP_DISP->chip_iounmap(mvi);
 155         if (mvi->shost)
 156                 scsi_host_put(mvi->shost);
 157         list_for_each_entry(mwq, &mvi->wq_list, entry)
 158                 cancel_delayed_work(&mwq->work_q);
 159         kfree(mvi->tags);
 160         kfree(mvi);
 161 }
 162
 163 #ifdef CONFIG_SCSI_MVSAS_TASKLET
 164 static void mvs_tasklet(unsigned long opaque)
 165 {
 166         u32 stat;
 167         u16 core_nr, i = 0;
 168
 169         struct mvs_info *mvi;
 170         struct sas_ha_struct *sha = (struct sas_ha_struct *)opaque;
 171
 172         core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
 173         mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[0];
 174
 175         if (unlikely(!mvi))
 176                 BUG_ON(1);
 177
 178         stat = MVS_CHIP_DISP->isr_status(mvi, mvi->pdev->irq);
 179         if (!stat)
 180                 goto out;
 181
 182         for (i = 0; i < core_nr; i++) {
 183                 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[i];
 184                 MVS_CHIP_DISP->isr(mvi, mvi->pdev->irq, stat);
 185         }
 186 out:
 187         MVS_CHIP_DISP->interrupt_enable(mvi);
 188
 189 }
 190 #endif
 191
 192 static irqreturn_t mvs_interrupt(int irq, void *opaque)
 193 {
 194         u32 core_nr;
 195         u32 stat;
 196         struct mvs_info *mvi;
 197         struct sas_ha_struct *sha = opaque;
 198 #ifndef CONFIG_SCSI_MVSAS_TASKLET
 199         u32 i;
 200 #endif
 201
 202         core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
 203         mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[0];
 204
 205         if (unlikely(!mvi))
 206                 return IRQ_NONE;
 207 #ifdef CONFIG_SCSI_MVSAS_TASKLET
 208         MVS_CHIP_DISP->interrupt_disable(mvi);
 209 #endif
 210
 211         stat = MVS_CHIP_DISP->isr_status(mvi, irq);
 212         if (!stat) {
 213         #ifdef CONFIG_SCSI_MVSAS_TASKLET
 214                 MVS_CHIP_DISP->interrupt_enable(mvi);
 215         #endif
 216                 return IRQ_NONE;
 217         }
 218
 219 #ifdef CONFIG_SCSI_MVSAS_TASKLET
 220         tasklet_schedule(&((struct mvs_prv_info *)sha->lldd_ha)->mv_tasklet);
 221 #else
 222         for (i = 0; i < core_nr; i++) {
 223                 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[i];
 224                 MVS_CHIP_DISP->isr(mvi, irq, stat);
 225         }
 226 #endif
 227         return IRQ_HANDLED;
 228 }
 229
 230 static int mvs_alloc(struct mvs_info *mvi, struct Scsi_Host *shost)
 231 {
 232         int i = 0, slot_nr;
 233         char pool_name[32];
 234
 235         if (mvi->flags & MVF_FLAG_SOC)
 236                 slot_nr = MVS_SOC_SLOTS;
 237         else
 238                 slot_nr = MVS_CHIP_SLOT_SZ;
 239
 240         spin_lock_init(&mvi->lock);
 241         for (i = 0; i < mvi->chip->n_phy; i++) {
 242                 mvs_phy_init(mvi, i);
 243                 mvi->port[i].wide_port_phymap = 0;
 244                 mvi->port[i].port_attached = 0;
 245                 INIT_LIST_HEAD(&mvi->port[i].list);
 246         }
 247         for (i = 0; i < MVS_MAX_DEVICES; i++) {
 248                 mvi->devices[i].taskfileset = MVS_ID_NOT_MAPPED;
 249                 mvi->devices[i].dev_type = SAS_PHY_UNUSED;
 250                 mvi->devices[i].device_id = i;
 251                 mvi->devices[i].dev_status = MVS_DEV_NORMAL;
 252                 init_timer(&mvi->devices[i].timer);
 253         }
 254
 255         /*
 256          * alloc and init our DMA areas
 257          */
 258         mvi->tx = dma_alloc_coherent(mvi->dev,
 259                                      sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ,
 260                                      &mvi->tx_dma, GFP_KERNEL);
 261         if (!mvi->tx)
 262                 goto err_out;
 263         memset(mvi->tx, 0, sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ);
 264         mvi->rx_fis = dma_alloc_coherent(mvi->dev, MVS_RX_FISL_SZ,
 265                                          &mvi->rx_fis_dma, GFP_KERNEL);
 266         if (!mvi->rx_fis)
 267                 goto err_out;
 268         memset(mvi->rx_fis, 0, MVS_RX_FISL_SZ);
 269
 270         mvi->rx = dma_alloc_coherent(mvi->dev,
 271                                      sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1),
 272                                      &mvi->rx_dma, GFP_KERNEL);
 273         if (!mvi->rx)
 274                 goto err_out;
 275         memset(mvi->rx, 0, sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1));
 276         mvi->rx[0] = cpu_to_le32(0xfff);
 277         mvi->rx_cons = 0xfff;
 278
 279         mvi->slot = dma_alloc_coherent(mvi->dev,
 280                                        sizeof(*mvi->slot) * slot_nr,
 281                                        &mvi->slot_dma, GFP_KERNEL);
 282         if (!mvi->slot)
 283                 goto err_out;
 284         memset(mvi->slot, 0, sizeof(*mvi->slot) * slot_nr);
 285
 286         mvi->bulk_buffer = dma_alloc_coherent(mvi->dev,
 287                                        TRASH_BUCKET_SIZE,
 288                                        &mvi->bulk_buffer_dma, GFP_KERNEL);
 289         if (!mvi->bulk_buffer)
 290                 goto err_out;
 291
 292         mvi->bulk_buffer1 = dma_alloc_coherent(mvi->dev,
 293                                        TRASH_BUCKET_SIZE,
 294                                        &mvi->bulk_buffer_dma1, GFP_KERNEL);
 295         if (!mvi->bulk_buffer1)
 296                 goto err_out;
 297
 298         sprintf(pool_name, "%s%d", "mvs_dma_pool", mvi->id);
 299         mvi->dma_pool = pci_pool_create(pool_name, mvi->pdev, MVS_SLOT_BUF_SZ, 16, 0);
 300         if (!mvi->dma_pool) {
 301                         printk(KERN_DEBUG "failed to create dma pool %s.\n", pool_name);
 302                         goto err_out;
 303         }
 304         mvi->tags_num = slot_nr;
 305
 306         /* Initialize tags */
 307         mvs_tag_init(mvi);
 308         return 0;
 309 err_out:
 310         return 1;
 311 }
 312
 313
 314 int mvs_ioremap(struct mvs_info *mvi, int bar, int bar_ex)
 315 {
 316         unsigned long res_start, res_len, res_flag, res_flag_ex = 0;
 317         struct pci_dev *pdev = mvi->pdev;
 318         if (bar_ex != -1) {
 319                 /*
 320                  * ioremap main and peripheral registers
 321                  */
 322                 res_start = pci_resource_start(pdev, bar_ex);
 323                 res_len = pci_resource_len(pdev, bar_ex);
 324                 if (!res_start || !res_len)
 325                         goto err_out;
 326
 327                 res_flag_ex = pci_resource_flags(pdev, bar_ex);
 328                 if (res_flag_ex & IORESOURCE_MEM)
 329                         mvi->regs_ex = ioremap(res_start, res_len);
 330                 else
 331                         mvi->regs_ex = (void *)res_start;
 332                 if (!mvi->regs_ex)
 333                         goto err_out;
 334         }
 335
 336         res_start = pci_resource_start(pdev, bar);
 337         res_len = pci_resource_len(pdev, bar);
 338         if (!res_start || !res_len) {
 339                 iounmap(mvi->regs_ex);
 340                 mvi->regs_ex = NULL;
 341                 goto err_out;
 342         }
 343
 344         res_flag = pci_resource_flags(pdev, bar);
 345         mvi->regs = ioremap(res_start, res_len);
 346
 347         if (!mvi->regs) {
 348                 if (mvi->regs_ex && (res_flag_ex & IORESOURCE_MEM))
 349                         iounmap(mvi->regs_ex);
 350                 mvi->regs_ex = NULL;
 351                 goto err_out;
 352         }
 353
 354         return 0;
 355 err_out:
 356         return -1;
 357 }
 358
 359 void mvs_iounmap(void __iomem *regs)
 360 {
 361         iounmap(regs);
 362 }
 363
 364 static struct mvs_info *mvs_pci_alloc(struct pci_dev *pdev,
 365                                 const struct pci_device_id *ent,
 366                                 struct Scsi_Host *shost, unsigned int id)
 367 {
 368         struct mvs_info *mvi = NULL;
 369         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 370
 371         mvi = kzalloc(sizeof(*mvi) +
 372                 (1L << mvs_chips[ent->driver_data].slot_width) *
 373                 sizeof(struct mvs_slot_info), GFP_KERNEL);
 374         if (!mvi)
 375                 return NULL;
 376
 377         mvi->pdev = pdev;
 378         mvi->dev = &pdev->dev;
 379         mvi->chip_id = ent->driver_data;
 380         mvi->chip = &mvs_chips[mvi->chip_id];
 381         INIT_LIST_HEAD(&mvi->wq_list);
 382
 383         ((struct mvs_prv_info *)sha->lldd_ha)->mvi[id] = mvi;
 384         ((struct mvs_prv_info *)sha->lldd_ha)->n_phy = mvi->chip->n_phy;
 385
 386         mvi->id = id;
 387         mvi->sas = sha;
 388         mvi->shost = shost;
 389
 390         mvi->tags = kzalloc(MVS_CHIP_SLOT_SZ>>3, GFP_KERNEL);
 391         if (!mvi->tags)
 392                 goto err_out;
 393
 394         if (MVS_CHIP_DISP->chip_ioremap(mvi))
 395                 goto err_out;
 396         if (!mvs_alloc(mvi, shost))
 397                 return mvi;
 398 err_out:
 399         mvs_free(mvi);
 400         return NULL;
 401 }
 402
 403 static int pci_go_64(struct pci_dev *pdev)
 404 {
 405         int rc;
 406
 407         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
 408                 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
 409                 if (rc) {
 410                         rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
 411                         if (rc) {
 412                                 dev_printk(KERN_ERR, &pdev->dev,
 413                                            "64-bit DMA enable failed\n");
 414                                 return rc;
 415                         }
 416                 }
 417         } else {
 418                 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 419                 if (rc) {
 420                         dev_printk(KERN_ERR, &pdev->dev,
 421                                    "32-bit DMA enable failed\n");
 422                         return rc;
 423                 }
 424                 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
 425                 if (rc) {
 426                         dev_printk(KERN_ERR, &pdev->dev,
 427                                    "32-bit consistent DMA enable failed\n");
 428                         return rc;
 429                 }
 430         }
 431
 432         return rc;
 433 }
 434
 435 static int mvs_prep_sas_ha_init(struct Scsi_Host *shost,
 436                                 const struct mvs_chip_info *chip_info)
 437 {
 438         int phy_nr, port_nr; unsigned short core_nr;
 439         struct asd_sas_phy **arr_phy;
 440         struct asd_sas_port **arr_port;
 441         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 442
 443         core_nr = chip_info->n_host;
 444         phy_nr  = core_nr * chip_info->n_phy;
 445         port_nr = phy_nr;
 446
 447         memset(sha, 0x00, sizeof(struct sas_ha_struct));
 448         arr_phy  = kcalloc(phy_nr, sizeof(void *), GFP_KERNEL);
 449         arr_port = kcalloc(port_nr, sizeof(void *), GFP_KERNEL);
 450         if (!arr_phy || !arr_port)
 451                 goto exit_free;
 452
 453         sha->sas_phy = arr_phy;
 454         sha->sas_port = arr_port;
 455         sha->core.shost = shost;
 456
 457         sha->lldd_ha = kzalloc(sizeof(struct mvs_prv_info), GFP_KERNEL);
 458         if (!sha->lldd_ha)
 459                 goto exit_free;
 460
 461         ((struct mvs_prv_info *)sha->lldd_ha)->n_host = core_nr;
 462
 463         shost->transportt = mvs_stt;
 464         shost->max_id = MVS_MAX_DEVICES;
 465         shost->max_lun = ~0;
 466         shost->max_channel = 1;
 467         shost->max_cmd_len = 16;
 468
 469         return 0;
 470 exit_free:
 471         kfree(arr_phy);
 472         kfree(arr_port);
 473         return -1;
 474
 475 }
 476
 477 static void  mvs_post_sas_ha_init(struct Scsi_Host *shost,
 478                         const struct mvs_chip_info *chip_info)
 479 {
 480         int can_queue, i = 0, j = 0;
 481         struct mvs_info *mvi = NULL;
 482         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 483         unsigned short nr_core = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
 484
 485         for (j = 0; j < nr_core; j++) {
 486                 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[j];
 487                 for (i = 0; i < chip_info->n_phy; i++) {
 488                         sha->sas_phy[j * chip_info->n_phy  + i] =
 489                                 &mvi->phy[i].sas_phy;
 490                         sha->sas_port[j * chip_info->n_phy + i] =
 491                                 &mvi->port[i].sas_port;
 492                 }
 493         }
 494
 495         sha->sas_ha_name = DRV_NAME;
 496         sha->dev = mvi->dev;
 497         sha->lldd_module = THIS_MODULE;
 498         sha->sas_addr = &mvi->sas_addr[0];
 499
 500         sha->num_phys = nr_core * chip_info->n_phy;
 501
 502         if (mvi->flags & MVF_FLAG_SOC)
 503                 can_queue = MVS_SOC_CAN_QUEUE;
 504         else
 505                 can_queue = MVS_CHIP_SLOT_SZ;
 506
 507         shost->sg_tablesize = min_t(u16, SG_ALL, MVS_MAX_SG);
 508         shost->can_queue = can_queue;
 509         mvi->shost->cmd_per_lun = MVS_QUEUE_SIZE;
 510         sha->core.shost = mvi->shost;
 511 }
 512
 513 static void mvs_init_sas_add(struct mvs_info *mvi)
 514 {
 515         u8 i;
 516         for (i = 0; i < mvi->chip->n_phy; i++) {
 517                 mvi->phy[i].dev_sas_addr = 0x5005043011ab0000ULL;
 518                 mvi->phy[i].dev_sas_addr =
 519                         cpu_to_be64((u64)(*(u64 *)&mvi->phy[i].dev_sas_addr));
 520         }
 521
 522         memcpy(mvi->sas_addr, &mvi->phy[0].dev_sas_addr, SAS_ADDR_SIZE);
 523 }
 524
 525 static int mvs_pci_init(struct pci_dev *pdev, const struct pci_device_id *ent)
 526 {
 527         unsigned int rc, nhost = 0;
 528         struct mvs_info *mvi;
 529         struct mvs_prv_info *mpi;
 530         irq_handler_t irq_handler = mvs_interrupt;
 531         struct Scsi_Host *shost = NULL;
 532         const struct mvs_chip_info *chip;
 533
 534         dev_printk(KERN_INFO, &pdev->dev,
 535                 "mvsas: driver version %s\n", DRV_VERSION);
 536         rc = pci_enable_device(pdev);
 537         if (rc)
 538                 goto err_out_enable;
 539
 540         pci_set_master(pdev);
 541
 542         rc = pci_request_regions(pdev, DRV_NAME);
 543         if (rc)
 544                 goto err_out_disable;
 545
 546         rc = pci_go_64(pdev);
 547         if (rc)
 548                 goto err_out_regions;
 549
 550         shost = scsi_host_alloc(&mvs_sht, sizeof(void *));
 551         if (!shost) {
 552                 rc = -ENOMEM;
 553                 goto err_out_regions;
 554         }
 555
 556         chip = &mvs_chips[ent->driver_data];
 557         SHOST_TO_SAS_HA(shost) =
 558                 kcalloc(1, sizeof(struct sas_ha_struct), GFP_KERNEL);
 559         if (!SHOST_TO_SAS_HA(shost)) {
 560                 kfree(shost);
 561                 rc = -ENOMEM;
 562                 goto err_out_regions;
 563         }
 564
 565         rc = mvs_prep_sas_ha_init(shost, chip);
 566         if (rc) {
 567                 kfree(shost);
 568                 rc = -ENOMEM;
 569                 goto err_out_regions;
 570         }
 571
 572         pci_set_drvdata(pdev, SHOST_TO_SAS_HA(shost));
 573
 574         do {
 575                 mvi = mvs_pci_alloc(pdev, ent, shost, nhost);
 576                 if (!mvi) {
 577                         rc = -ENOMEM;
 578                         goto err_out_regions;
 579                 }
 580
 581                 memset(&mvi->hba_info_param, 0xFF,
 582                         sizeof(struct hba_info_page));
 583
 584                 mvs_init_sas_add(mvi);
 585
 586                 mvi->instance = nhost;
 587                 rc = MVS_CHIP_DISP->chip_init(mvi);
 588                 if (rc) {
 589                         mvs_free(mvi);
 590                         goto err_out_regions;
 591                 }
 592                 nhost++;
 593         } while (nhost < chip->n_host);
 594         mpi = (struct mvs_prv_info *)(SHOST_TO_SAS_HA(shost)->lldd_ha);
 595 #ifdef CONFIG_SCSI_MVSAS_TASKLET
 596         tasklet_init(&(mpi->mv_tasklet), mvs_tasklet,
 597                      (unsigned long)SHOST_TO_SAS_HA(shost));
 598 #endif
 599
 600         mvs_post_sas_ha_init(shost, chip);
 601
 602         rc = scsi_add_host(shost, &pdev->dev);
 603         if (rc)
 604                 goto err_out_shost;
 605
 606         rc = sas_register_ha(SHOST_TO_SAS_HA(shost));
 607         if (rc)
 608                 goto err_out_shost;
 609         rc = request_irq(pdev->irq, irq_handler, IRQF_SHARED,
 610                 DRV_NAME, SHOST_TO_SAS_HA(shost));
 611         if (rc)
 612                 goto err_not_sas;
 613
 614         MVS_CHIP_DISP->interrupt_enable(mvi);
 615
 616         scsi_scan_host(mvi->shost);
 617
 618         return 0;
 619
 620 err_not_sas:
 621         sas_unregister_ha(SHOST_TO_SAS_HA(shost));
 622 err_out_shost:
 623         scsi_remove_host(mvi->shost);
 624 err_out_regions:
 625         pci_release_regions(pdev);
 626 err_out_disable:
 627         pci_disable_device(pdev);
 628 err_out_enable:
 629         return rc;
 630 }
 631
 632 static void mvs_pci_remove(struct pci_dev *pdev)
 633 {
 634         unsigned short core_nr, i = 0;
 635         struct sas_ha_struct *sha = pci_get_drvdata(pdev);
 636         struct mvs_info *mvi = NULL;
 637
 638         core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
 639         mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[0];
 640
 641 #ifdef CONFIG_SCSI_MVSAS_TASKLET
 642         tasklet_kill(&((struct mvs_prv_info *)sha->lldd_ha)->mv_tasklet);
 643 #endif
 644
 645         scsi_remove_host(mvi->shost);
 646         sas_unregister_ha(sha);
 647         sas_remove_host(mvi->shost);
 648
 649         MVS_CHIP_DISP->interrupt_disable(mvi);
 650         free_irq(mvi->pdev->irq, sha);
 651         for (i = 0; i < core_nr; i++) {
 652                 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[i];
 653                 mvs_free(mvi);
 654         }
 655         kfree(sha->sas_phy);
 656         kfree(sha->sas_port);
 657         kfree(sha);
 658         pci_release_regions(pdev);
 659         pci_disable_device(pdev);
 660         return;
 661 }
 662
 663 static struct pci_device_id mvs_pci_table[] = {
 664         { PCI_VDEVICE(MARVELL, 0x6320), chip_6320 },
 665         { PCI_VDEVICE(MARVELL, 0x6340), chip_6440 },
 666         {
 667                 .vendor         = PCI_VENDOR_ID_MARVELL,
 668                 .device         = 0x6440,
 669                 .subvendor      = PCI_ANY_ID,
 670                 .subdevice      = 0x6480,
 671                 .class          = 0,
 672                 .class_mask     = 0,
 673                 .driver_data    = chip_6485,
 674         },
 675         { PCI_VDEVICE(MARVELL, 0x6440), chip_6440 },
 676         { PCI_VDEVICE(MARVELL, 0x6485), chip_6485 },
 677         { PCI_VDEVICE(MARVELL, 0x9480), chip_9480 },
 678         { PCI_VDEVICE(MARVELL, 0x9180), chip_9180 },
 679         { PCI_VDEVICE(ARECA, PCI_DEVICE_ID_ARECA_1300), chip_1300 },
 680         { PCI_VDEVICE(ARECA, PCI_DEVICE_ID_ARECA_1320), chip_1320 },
 681         { PCI_VDEVICE(ADAPTEC2, 0x0450), chip_6440 },
 682         { PCI_VDEVICE(TTI, 0x2710), chip_9480 },
 683         { PCI_VDEVICE(TTI, 0x2720), chip_9480 },
 684         { PCI_VDEVICE(TTI, 0x2721), chip_9480 },
 685         { PCI_VDEVICE(TTI, 0x2722), chip_9480 },
 686         { PCI_VDEVICE(TTI, 0x2740), chip_9480 },
 687         { PCI_VDEVICE(TTI, 0x2744), chip_9480 },
 688         { PCI_VDEVICE(TTI, 0x2760), chip_9480 },
 689         {
 690                 .vendor         = PCI_VENDOR_ID_MARVELL_EXT,
 691                 .device         = 0x9480,
 692                 .subvendor      = PCI_ANY_ID,
 693                 .subdevice      = 0x9480,
 694                 .class          = 0,
 695                 .class_mask     = 0,
 696                 .driver_data    = chip_9480,
 697         },
 698         {
 699                 .vendor         = PCI_VENDOR_ID_MARVELL_EXT,
 700                 .device         = 0x9445,
 701                 .subvendor      = PCI_ANY_ID,
 702                 .subdevice      = 0x9480,
 703                 .class          = 0,
 704                 .class_mask     = 0,
 705                 .driver_data    = chip_9445,
 706         },
 707         {
 708                 .vendor         = PCI_VENDOR_ID_MARVELL_EXT,
 709                 .device         = 0x9485,
 710                 .subvendor      = PCI_ANY_ID,
 711                 .subdevice      = 0x9480,
 712                 .class          = 0,
 713                 .class_mask     = 0,
 714                 .driver_data    = chip_9485,
 715         },
 716         {
 717                 .vendor         = PCI_VENDOR_ID_MARVELL_EXT,
 718                 .device         = 0x9485,
 719                 .subvendor      = PCI_ANY_ID,
 720                 .subdevice      = 0x9485,
 721                 .class          = 0,
 722                 .class_mask     = 0,
 723                 .driver_data    = chip_9485,
 724         },
 725         { PCI_VDEVICE(OCZ, 0x1021), chip_9485}, /* OCZ RevoDrive3 */
 726         { PCI_VDEVICE(OCZ, 0x1022), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
 727         { PCI_VDEVICE(OCZ, 0x1040), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
 728         { PCI_VDEVICE(OCZ, 0x1041), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
 729         { PCI_VDEVICE(OCZ, 0x1042), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
 730         { PCI_VDEVICE(OCZ, 0x1043), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
 731         { PCI_VDEVICE(OCZ, 0x1044), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
 732         { PCI_VDEVICE(OCZ, 0x1080), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
 733         { PCI_VDEVICE(OCZ, 0x1083), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
 734         { PCI_VDEVICE(OCZ, 0x1084), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
 735
 736         { }     /* terminate list */
 737 };
 738
 739 static struct pci_driver mvs_pci_driver = {
 740         .name           = DRV_NAME,
 741         .id_table       = mvs_pci_table,
 742         .probe          = mvs_pci_init,
 743         .remove         = mvs_pci_remove,
 744 };
 745
 746 static ssize_t
 747 mvs_show_driver_version(struct device *cdev,
 748                 struct device_attribute *attr,  char *buffer)
 749 {
 750         return snprintf(buffer, PAGE_SIZE, "%s\n", DRV_VERSION);
 751 }
 752
 753 static DEVICE_ATTR(driver_version,
 754                          S_IRUGO,
 755                          mvs_show_driver_version,
 756                          NULL);
 757
 758 static ssize_t
 759 mvs_store_interrupt_coalescing(struct device *cdev,
 760                         struct device_attribute *attr,
 761                         const char *buffer, size_t size)
 762 {
 763         unsigned int val = 0;
 764         struct mvs_info *mvi = NULL;
 765         struct Scsi_Host *shost = class_to_shost(cdev);
 766         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 767         u8 i, core_nr;
 768         if (buffer == NULL)
 769                 return size;
 770
 771         if (sscanf(buffer, "%u", &val) != 1)
 772                 return -EINVAL;
 773
 774         if (val >= 0x10000) {
 775                 mv_dprintk("interrupt coalescing timer %d us is"
 776                         "too long\n", val);
 777                 return strlen(buffer);
 778         }
 779
 780         interrupt_coalescing = val;
 781
 782         core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
 783         mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[0];
 784
 785         if (unlikely(!mvi))
 786                 return -EINVAL;
 787
 788         for (i = 0; i < core_nr; i++) {
 789                 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[i];
 790                 if (MVS_CHIP_DISP->tune_interrupt)
 791                         MVS_CHIP_DISP->tune_interrupt(mvi,
 792                                 interrupt_coalescing);
 793         }
 794         mv_dprintk("set interrupt coalescing time to %d us\n",
 795                 interrupt_coalescing);
 796         return strlen(buffer);
 797 }
 798
 799 static ssize_t mvs_show_interrupt_coalescing(struct device *cdev,
 800                         struct device_attribute *attr, char *buffer)
 801 {
 802         return snprintf(buffer, PAGE_SIZE, "%d\n", interrupt_coalescing);
 803 }
 804
 805 static DEVICE_ATTR(interrupt_coalescing,
 806                          S_IRUGO|S_IWUSR,
 807                          mvs_show_interrupt_coalescing,
 808                          mvs_store_interrupt_coalescing);
 809
 810 /* task handler */
 811 struct task_struct *mvs_th;
 812 static int __init mvs_init(void)
 813 {
 814         int rc;
 815         mvs_stt = sas_domain_attach_transport(&mvs_transport_ops);
 816         if (!mvs_stt)
 817                 return -ENOMEM;
 818
 819         rc = pci_register_driver(&mvs_pci_driver);
 820         if (rc)
 821                 goto err_out;
 822
 823         return 0;
 824
 825 err_out:
 826         sas_release_transport(mvs_stt);
 827         return rc;
 828 }
 829
 830 static void __exit mvs_exit(void)
 831 {
 832         pci_unregister_driver(&mvs_pci_driver);
 833         sas_release_transport(mvs_stt);
 834 }
 835
 836 struct device_attribute *mvst_host_attrs[] = {
 837         &dev_attr_driver_version,
 838         &dev_attr_interrupt_coalescing,
 839         NULL,
 840 };
 841
 842 module_init(mvs_init);
 843 module_exit(mvs_exit);
 844
 845 MODULE_AUTHOR("Jeff Garzik <[email protected]>");
 846 MODULE_DESCRIPTION("Marvell 88SE6440 SAS/SATA controller driver");
 847 MODULE_VERSION(DRV_VERSION);
 848 MODULE_LICENSE("GPL");
 849 #ifdef CONFIG_PCI
 850 MODULE_DEVICE_TABLE(pci, mvs_pci_table);
 851 #endif