drivers/scsi/pm8001/pm8001_init.c

   1 /*
   2  * PMC-Sierra SPC 8001 SAS/SATA based host adapters driver
   3  *
   4  * Copyright (c) 2008-2009 USI Co., Ltd.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions, and the following disclaimer,
  12  *    without modification.
  13  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  14  *    substantially similar to the "NO WARRANTY" disclaimer below
  15  *    ("Disclaimer") and any redistribution must be conditioned upon
  16  *    including a substantially similar Disclaimer requirement for further
  17  *    binary redistribution.
  18  * 3. Neither the names of the above-listed copyright holders nor the names
  19  *    of any contributors may be used to endorse or promote products derived
  20  *    from this software without specific prior written permission.
  21  *
  22  * Alternatively, this software may be distributed under the terms of the
  23  * GNU General Public License ("GPL") version 2 as published by the Free
  24  * Software Foundation.
  25  *
  26  * NO WARRANTY
  27  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  28  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  29  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  30  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  31  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  35  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  36  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  37  * POSSIBILITY OF SUCH DAMAGES.
  38  *
  39  */
  40
  41 #include <linux/slab.h>
  42 #include "pm8001_sas.h"
  43 #include "pm8001_chips.h"
  44
  45 static struct scsi_transport_template *pm8001_stt;
  46
  47 static const struct pm8001_chip_info pm8001_chips[] = {
  48         [chip_8001] = {  8, &pm8001_8001_dispatch,},
  49 };
  50 static int pm8001_id;
  51
  52 LIST_HEAD(hba_list);
  53
  54 struct workqueue_struct *pm8001_wq;
  55
  56 /**
  57  * The main structure which LLDD must register for scsi core.
  58  */
  59 static struct scsi_host_template pm8001_sht = {
  60         .module                 = THIS_MODULE,
  61         .name                   = DRV_NAME,
  62         .queuecommand           = sas_queuecommand,
  63         .target_alloc           = sas_target_alloc,
  64         .slave_configure        = sas_slave_configure,
  65         .scan_finished          = pm8001_scan_finished,
  66         .scan_start             = pm8001_scan_start,
  67         .change_queue_depth     = sas_change_queue_depth,
  68         .change_queue_type      = sas_change_queue_type,
  69         .bios_param             = sas_bios_param,
  70         .can_queue              = 1,
  71         .cmd_per_lun            = 1,
  72         .this_id                = -1,
  73         .sg_tablesize           = SG_ALL,
  74         .max_sectors            = SCSI_DEFAULT_MAX_SECTORS,
  75         .use_clustering         = ENABLE_CLUSTERING,
  76         .eh_device_reset_handler = sas_eh_device_reset_handler,
  77         .eh_bus_reset_handler   = sas_eh_bus_reset_handler,
  78         .target_destroy         = sas_target_destroy,
  79         .ioctl                  = sas_ioctl,
  80         .shost_attrs            = pm8001_host_attrs,
  81 };
  82
  83 /**
  84  * Sas layer call this function to execute specific task.
  85  */
  86 static struct sas_domain_function_template pm8001_transport_ops = {
  87         .lldd_dev_found         = pm8001_dev_found,
  88         .lldd_dev_gone          = pm8001_dev_gone,
  89
  90         .lldd_execute_task      = pm8001_queue_command,
  91         .lldd_control_phy       = pm8001_phy_control,
  92
  93         .lldd_abort_task        = pm8001_abort_task,
  94         .lldd_abort_task_set    = pm8001_abort_task_set,
  95         .lldd_clear_aca         = pm8001_clear_aca,
  96         .lldd_clear_task_set    = pm8001_clear_task_set,
  97         .lldd_I_T_nexus_reset   = pm8001_I_T_nexus_reset,
  98         .lldd_lu_reset          = pm8001_lu_reset,
  99         .lldd_query_task        = pm8001_query_task,
 100 };
 101
 102 /**
 103  *pm8001_phy_init - initiate our adapter phys
 104  *@pm8001_ha: our hba structure.
 105  *@phy_id: phy id.
 106  */
 107 static void pm8001_phy_init(struct pm8001_hba_info *pm8001_ha, int phy_id)
 108 {
 109         struct pm8001_phy *phy = &pm8001_ha->phy[phy_id];
 110         struct asd_sas_phy *sas_phy = &phy->sas_phy;
 111         phy->phy_state = 0;
 112         phy->pm8001_ha = pm8001_ha;
 113         sas_phy->enabled = (phy_id < pm8001_ha->chip->n_phy) ? 1 : 0;
 114         sas_phy->class = SAS;
 115         sas_phy->iproto = SAS_PROTOCOL_ALL;
 116         sas_phy->tproto = 0;
 117         sas_phy->type = PHY_TYPE_PHYSICAL;
 118         sas_phy->role = PHY_ROLE_INITIATOR;
 119         sas_phy->oob_mode = OOB_NOT_CONNECTED;
 120         sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
 121         sas_phy->id = phy_id;
 122         sas_phy->sas_addr = &pm8001_ha->sas_addr[0];
 123         sas_phy->frame_rcvd = &phy->frame_rcvd[0];
 124         sas_phy->ha = (struct sas_ha_struct *)pm8001_ha->shost->hostdata;
 125         sas_phy->lldd_phy = phy;
 126 }
 127
 128 /**
 129  *pm8001_free - free hba
 130  *@pm8001_ha:   our hba structure.
 131  *
 132  */
 133 static void pm8001_free(struct pm8001_hba_info *pm8001_ha)
 134 {
 135         int i;
 136
 137         if (!pm8001_ha)
 138                 return;
 139
 140         for (i = 0; i < USI_MAX_MEMCNT; i++) {
 141                 if (pm8001_ha->memoryMap.region[i].virt_ptr != NULL) {
 142                         pci_free_consistent(pm8001_ha->pdev,
 143                                 pm8001_ha->memoryMap.region[i].element_size,
 144                                 pm8001_ha->memoryMap.region[i].virt_ptr,
 145                                 pm8001_ha->memoryMap.region[i].phys_addr);
 146                         }
 147         }
 148         PM8001_CHIP_DISP->chip_iounmap(pm8001_ha);
 149         if (pm8001_ha->shost)
 150                 scsi_host_put(pm8001_ha->shost);
 151         flush_workqueue(pm8001_wq);
 152         kfree(pm8001_ha->tags);
 153         kfree(pm8001_ha);
 154 }
 155
 156 #ifdef PM8001_USE_TASKLET
 157 static void pm8001_tasklet(unsigned long opaque)
 158 {
 159         struct pm8001_hba_info *pm8001_ha;
 160         pm8001_ha = (struct pm8001_hba_info *)opaque;
 161         if (unlikely(!pm8001_ha))
 162                 BUG_ON(1);
 163         PM8001_CHIP_DISP->isr(pm8001_ha);
 164 }
 165 #endif
 166
 167
 168  /**
 169   * pm8001_interrupt - when HBA originate a interrupt,we should invoke this
 170   * dispatcher to handle each case.
 171   * @irq: irq number.
 172   * @opaque: the passed general host adapter struct
 173   */
 174 static irqreturn_t pm8001_interrupt(int irq, void *opaque)
 175 {
 176         struct pm8001_hba_info *pm8001_ha;
 177         irqreturn_t ret = IRQ_HANDLED;
 178         struct sas_ha_struct *sha = opaque;
 179         pm8001_ha = sha->lldd_ha;
 180         if (unlikely(!pm8001_ha))
 181                 return IRQ_NONE;
 182         if (!PM8001_CHIP_DISP->is_our_interupt(pm8001_ha))
 183                 return IRQ_NONE;
 184 #ifdef PM8001_USE_TASKLET
 185         tasklet_schedule(&pm8001_ha->tasklet);
 186 #else
 187         ret = PM8001_CHIP_DISP->isr(pm8001_ha);
 188 #endif
 189         return ret;
 190 }
 191
 192 /**
 193  * pm8001_alloc - initiate our hba structure and 6 DMAs area.
 194  * @pm8001_ha:our hba structure.
 195  *
 196  */
 197 static int pm8001_alloc(struct pm8001_hba_info *pm8001_ha)
 198 {
 199         int i;
 200         spin_lock_init(&pm8001_ha->lock);
 201         for (i = 0; i < pm8001_ha->chip->n_phy; i++) {
 202                 pm8001_phy_init(pm8001_ha, i);
 203                 pm8001_ha->port[i].wide_port_phymap = 0;
 204                 pm8001_ha->port[i].port_attached = 0;
 205                 pm8001_ha->port[i].port_state = 0;
 206                 INIT_LIST_HEAD(&pm8001_ha->port[i].list);
 207         }
 208
 209         pm8001_ha->tags = kzalloc(PM8001_MAX_CCB, GFP_KERNEL);
 210         if (!pm8001_ha->tags)
 211                 goto err_out;
 212         /* MPI Memory region 1 for AAP Event Log for fw */
 213         pm8001_ha->memoryMap.region[AAP1].num_elements = 1;
 214         pm8001_ha->memoryMap.region[AAP1].element_size = PM8001_EVENT_LOG_SIZE;
 215         pm8001_ha->memoryMap.region[AAP1].total_len = PM8001_EVENT_LOG_SIZE;
 216         pm8001_ha->memoryMap.region[AAP1].alignment = 32;
 217
 218         /* MPI Memory region 2 for IOP Event Log for fw */
 219         pm8001_ha->memoryMap.region[IOP].num_elements = 1;
 220         pm8001_ha->memoryMap.region[IOP].element_size = PM8001_EVENT_LOG_SIZE;
 221         pm8001_ha->memoryMap.region[IOP].total_len = PM8001_EVENT_LOG_SIZE;
 222         pm8001_ha->memoryMap.region[IOP].alignment = 32;
 223
 224         /* MPI Memory region 3 for consumer Index of inbound queues */
 225         pm8001_ha->memoryMap.region[CI].num_elements = 1;
 226         pm8001_ha->memoryMap.region[CI].element_size = 4;
 227         pm8001_ha->memoryMap.region[CI].total_len = 4;
 228         pm8001_ha->memoryMap.region[CI].alignment = 4;
 229
 230         /* MPI Memory region 4 for producer Index of outbound queues */
 231         pm8001_ha->memoryMap.region[PI].num_elements = 1;
 232         pm8001_ha->memoryMap.region[PI].element_size = 4;
 233         pm8001_ha->memoryMap.region[PI].total_len = 4;
 234         pm8001_ha->memoryMap.region[PI].alignment = 4;
 235
 236         /* MPI Memory region 5 inbound queues */
 237         pm8001_ha->memoryMap.region[IB].num_elements = PM8001_MPI_QUEUE;
 238         pm8001_ha->memoryMap.region[IB].element_size = 64;
 239         pm8001_ha->memoryMap.region[IB].total_len = PM8001_MPI_QUEUE * 64;
 240         pm8001_ha->memoryMap.region[IB].alignment = 64;
 241
 242         /* MPI Memory region 6 outbound queues */
 243         pm8001_ha->memoryMap.region[OB].num_elements = PM8001_MPI_QUEUE;
 244         pm8001_ha->memoryMap.region[OB].element_size = 64;
 245         pm8001_ha->memoryMap.region[OB].total_len = PM8001_MPI_QUEUE * 64;
 246         pm8001_ha->memoryMap.region[OB].alignment = 64;
 247
 248         /* Memory region write DMA*/
 249         pm8001_ha->memoryMap.region[NVMD].num_elements = 1;
 250         pm8001_ha->memoryMap.region[NVMD].element_size = 4096;
 251         pm8001_ha->memoryMap.region[NVMD].total_len = 4096;
 252         /* Memory region for devices*/
 253         pm8001_ha->memoryMap.region[DEV_MEM].num_elements = 1;
 254         pm8001_ha->memoryMap.region[DEV_MEM].element_size = PM8001_MAX_DEVICES *
 255                 sizeof(struct pm8001_device);
 256         pm8001_ha->memoryMap.region[DEV_MEM].total_len = PM8001_MAX_DEVICES *
 257                 sizeof(struct pm8001_device);
 258
 259         /* Memory region for ccb_info*/
 260         pm8001_ha->memoryMap.region[CCB_MEM].num_elements = 1;
 261         pm8001_ha->memoryMap.region[CCB_MEM].element_size = PM8001_MAX_CCB *
 262                 sizeof(struct pm8001_ccb_info);
 263         pm8001_ha->memoryMap.region[CCB_MEM].total_len = PM8001_MAX_CCB *
 264                 sizeof(struct pm8001_ccb_info);
 265
 266         for (i = 0; i < USI_MAX_MEMCNT; i++) {
 267                 if (pm8001_mem_alloc(pm8001_ha->pdev,
 268                         &pm8001_ha->memoryMap.region[i].virt_ptr,
 269                         &pm8001_ha->memoryMap.region[i].phys_addr,
 270                         &pm8001_ha->memoryMap.region[i].phys_addr_hi,
 271                         &pm8001_ha->memoryMap.region[i].phys_addr_lo,
 272                         pm8001_ha->memoryMap.region[i].total_len,
 273                         pm8001_ha->memoryMap.region[i].alignment) != 0) {
 274                                 PM8001_FAIL_DBG(pm8001_ha,
 275                                         pm8001_printk("Mem%d alloc failed\n",
 276                                         i));
 277                                 goto err_out;
 278                 }
 279         }
 280
 281         pm8001_ha->devices = pm8001_ha->memoryMap.region[DEV_MEM].virt_ptr;
 282         for (i = 0; i < PM8001_MAX_DEVICES; i++) {
 283                 pm8001_ha->devices[i].dev_type = NO_DEVICE;
 284                 pm8001_ha->devices[i].id = i;
 285                 pm8001_ha->devices[i].device_id = PM8001_MAX_DEVICES;
 286                 pm8001_ha->devices[i].running_req = 0;
 287         }
 288         pm8001_ha->ccb_info = pm8001_ha->memoryMap.region[CCB_MEM].virt_ptr;
 289         for (i = 0; i < PM8001_MAX_CCB; i++) {
 290                 pm8001_ha->ccb_info[i].ccb_dma_handle =
 291                         pm8001_ha->memoryMap.region[CCB_MEM].phys_addr +
 292                         i * sizeof(struct pm8001_ccb_info);
 293                 pm8001_ha->ccb_info[i].task = NULL;
 294                 pm8001_ha->ccb_info[i].ccb_tag = 0xffffffff;
 295                 pm8001_ha->ccb_info[i].device = NULL;
 296                 ++pm8001_ha->tags_num;
 297         }
 298         pm8001_ha->flags = PM8001F_INIT_TIME;
 299         /* Initialize tags */
 300         pm8001_tag_init(pm8001_ha);
 301         return 0;
 302 err_out:
 303         return 1;
 304 }
 305
 306 /**
 307  * pm8001_ioremap - remap the pci high physical address to kernal virtual
 308  * address so that we can access them.
 309  * @pm8001_ha:our hba structure.
 310  */
 311 static int pm8001_ioremap(struct pm8001_hba_info *pm8001_ha)
 312 {
 313         u32 bar;
 314         u32 logicalBar = 0;
 315         struct pci_dev *pdev;
 316
 317         pdev = pm8001_ha->pdev;
 318         /* map pci mem (PMC pci base 0-3)*/
 319         for (bar = 0; bar < 6; bar++) {
 320                 /*
 321                 ** logical BARs for SPC:
 322                 ** bar 0 and 1 - logical BAR0
 323                 ** bar 2 and 3 - logical BAR1
 324                 ** bar4 - logical BAR2
 325                 ** bar5 - logical BAR3
 326                 ** Skip the appropriate assignments:
 327                 */
 328                 if ((bar == 1) || (bar == 3))
 329                         continue;
 330                 if (pci_resource_flags(pdev, bar) & IORESOURCE_MEM) {
 331                         pm8001_ha->io_mem[logicalBar].membase =
 332                                 pci_resource_start(pdev, bar);
 333                         pm8001_ha->io_mem[logicalBar].membase &=
 334                                 (u32)PCI_BASE_ADDRESS_MEM_MASK;
 335                         pm8001_ha->io_mem[logicalBar].memsize =
 336                                 pci_resource_len(pdev, bar);
 337                         pm8001_ha->io_mem[logicalBar].memvirtaddr =
 338                                 ioremap(pm8001_ha->io_mem[logicalBar].membase,
 339                                 pm8001_ha->io_mem[logicalBar].memsize);
 340                         PM8001_INIT_DBG(pm8001_ha,
 341                                 pm8001_printk("PCI: bar %d, logicalBar %d "
 342                                 "virt_addr=%lx,len=%d\n", bar, logicalBar,
 343                                 (unsigned long)
 344                                 pm8001_ha->io_mem[logicalBar].memvirtaddr,
 345                                 pm8001_ha->io_mem[logicalBar].memsize));
 346                 } else {
 347                         pm8001_ha->io_mem[logicalBar].membase   = 0;
 348                         pm8001_ha->io_mem[logicalBar].memsize   = 0;
 349                         pm8001_ha->io_mem[logicalBar].memvirtaddr = 0;
 350                 }
 351                 logicalBar++;
 352         }
 353         return 0;
 354 }
 355
 356 /**
 357  * pm8001_pci_alloc - initialize our ha card structure
 358  * @pdev: pci device.
 359  * @ent: ent
 360  * @shost: scsi host struct which has been initialized before.
 361  */
 362 static struct pm8001_hba_info *pm8001_pci_alloc(struct pci_dev *pdev,
 363                                                 u32 chip_id,
 364                                                 struct Scsi_Host *shost)
 365 {
 366         struct pm8001_hba_info *pm8001_ha;
 367         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 368
 369
 370         pm8001_ha = sha->lldd_ha;
 371         if (!pm8001_ha)
 372                 return NULL;
 373
 374         pm8001_ha->pdev = pdev;
 375         pm8001_ha->dev = &pdev->dev;
 376         pm8001_ha->chip_id = chip_id;
 377         pm8001_ha->chip = &pm8001_chips[pm8001_ha->chip_id];
 378         pm8001_ha->irq = pdev->irq;
 379         pm8001_ha->sas = sha;
 380         pm8001_ha->shost = shost;
 381         pm8001_ha->id = pm8001_id++;
 382         pm8001_ha->logging_level = 0x01;
 383         sprintf(pm8001_ha->name, "%s%d", DRV_NAME, pm8001_ha->id);
 384 #ifdef PM8001_USE_TASKLET
 385         tasklet_init(&pm8001_ha->tasklet, pm8001_tasklet,
 386                 (unsigned long)pm8001_ha);
 387 #endif
 388         pm8001_ioremap(pm8001_ha);
 389         if (!pm8001_alloc(pm8001_ha))
 390                 return pm8001_ha;
 391         pm8001_free(pm8001_ha);
 392         return NULL;
 393 }
 394
 395 /**
 396  * pci_go_44 - pm8001 specified, its DMA is 44 bit rather than 64 bit
 397  * @pdev: pci device.
 398  */
 399 static int pci_go_44(struct pci_dev *pdev)
 400 {
 401         int rc;
 402
 403         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(44))) {
 404                 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(44));
 405                 if (rc) {
 406                         rc = pci_set_consistent_dma_mask(pdev,
 407                                 DMA_BIT_MASK(32));
 408                         if (rc) {
 409                                 dev_printk(KERN_ERR, &pdev->dev,
 410                                         "44-bit DMA enable failed\n");
 411                                 return rc;
 412                         }
 413                 }
 414         } else {
 415                 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 416                 if (rc) {
 417                         dev_printk(KERN_ERR, &pdev->dev,
 418                                 "32-bit DMA enable failed\n");
 419                         return rc;
 420                 }
 421                 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
 422                 if (rc) {
 423                         dev_printk(KERN_ERR, &pdev->dev,
 424                                 "32-bit consistent DMA enable failed\n");
 425                         return rc;
 426                 }
 427         }
 428         return rc;
 429 }
 430
 431 /**
 432  * pm8001_prep_sas_ha_init - allocate memory in general hba struct && init them.
 433  * @shost: scsi host which has been allocated outside.
 434  * @chip_info: our ha struct.
 435  */
 436 static int pm8001_prep_sas_ha_init(struct Scsi_Host *shost,
 437                                    const struct pm8001_chip_info *chip_info)
 438 {
 439         int phy_nr, port_nr;
 440         struct asd_sas_phy **arr_phy;
 441         struct asd_sas_port **arr_port;
 442         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 443
 444         phy_nr = chip_info->n_phy;
 445         port_nr = phy_nr;
 446         memset(sha, 0x00, sizeof(*sha));
 447         arr_phy = kcalloc(phy_nr, sizeof(void *), GFP_KERNEL);
 448         if (!arr_phy)
 449                 goto exit;
 450         arr_port = kcalloc(port_nr, sizeof(void *), GFP_KERNEL);
 451         if (!arr_port)
 452                 goto exit_free2;
 453
 454         sha->sas_phy = arr_phy;
 455         sha->sas_port = arr_port;
 456         sha->lldd_ha = kzalloc(sizeof(struct pm8001_hba_info), GFP_KERNEL);
 457         if (!sha->lldd_ha)
 458                 goto exit_free1;
 459
 460         shost->transportt = pm8001_stt;
 461         shost->max_id = PM8001_MAX_DEVICES;
 462         shost->max_lun = 8;
 463         shost->max_channel = 0;
 464         shost->unique_id = pm8001_id;
 465         shost->max_cmd_len = 16;
 466         shost->can_queue = PM8001_CAN_QUEUE;
 467         shost->cmd_per_lun = 32;
 468         return 0;
 469 exit_free1:
 470         kfree(arr_port);
 471 exit_free2:
 472         kfree(arr_phy);
 473 exit:
 474         return -1;
 475 }
 476
 477 /**
 478  * pm8001_post_sas_ha_init - initialize general hba struct defined in libsas
 479  * @shost: scsi host which has been allocated outside
 480  * @chip_info: our ha struct.
 481  */
 482 static void  pm8001_post_sas_ha_init(struct Scsi_Host *shost,
 483                                      const struct pm8001_chip_info *chip_info)
 484 {
 485         int i = 0;
 486         struct pm8001_hba_info *pm8001_ha;
 487         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 488
 489         pm8001_ha = sha->lldd_ha;
 490         for (i = 0; i < chip_info->n_phy; i++) {
 491                 sha->sas_phy[i] = &pm8001_ha->phy[i].sas_phy;
 492                 sha->sas_port[i] = &pm8001_ha->port[i].sas_port;
 493         }
 494         sha->sas_ha_name = DRV_NAME;
 495         sha->dev = pm8001_ha->dev;
 496
 497         sha->lldd_module = THIS_MODULE;
 498         sha->sas_addr = &pm8001_ha->sas_addr[0];
 499         sha->num_phys = chip_info->n_phy;
 500         sha->lldd_max_execute_num = 1;
 501         sha->lldd_queue_size = PM8001_CAN_QUEUE;
 502         sha->core.shost = shost;
 503 }
 504
 505 /**
 506  * pm8001_init_sas_add - initialize sas address
 507  * @chip_info: our ha struct.
 508  *
 509  * Currently we just set the fixed SAS address to our HBA,for manufacture,
 510  * it should read from the EEPROM
 511  */
 512 static void pm8001_init_sas_add(struct pm8001_hba_info *pm8001_ha)
 513 {
 514         u8 i;
 515 #ifdef PM8001_READ_VPD
 516         DECLARE_COMPLETION_ONSTACK(completion);
 517         struct pm8001_ioctl_payload payload;
 518         pm8001_ha->nvmd_completion = &completion;
 519         payload.minor_function = 0;
 520         payload.length = 128;
 521         payload.func_specific = kzalloc(128, GFP_KERNEL);
 522         PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload);
 523         wait_for_completion(&completion);
 524         for (i = 0; i < pm8001_ha->chip->n_phy; i++) {
 525                 memcpy(&pm8001_ha->phy[i].dev_sas_addr, pm8001_ha->sas_addr,
 526                         SAS_ADDR_SIZE);
 527                 PM8001_INIT_DBG(pm8001_ha,
 528                         pm8001_printk("phy %d sas_addr = %016llx \n", i,
 529                         pm8001_ha->phy[i].dev_sas_addr));
 530         }
 531 #else
 532         for (i = 0; i < pm8001_ha->chip->n_phy; i++) {
 533                 pm8001_ha->phy[i].dev_sas_addr = 0x50010c600047f9d0ULL;
 534                 pm8001_ha->phy[i].dev_sas_addr =
 535                         cpu_to_be64((u64)
 536                                 (*(u64 *)&pm8001_ha->phy[i].dev_sas_addr));
 537         }
 538         memcpy(pm8001_ha->sas_addr, &pm8001_ha->phy[0].dev_sas_addr,
 539                 SAS_ADDR_SIZE);
 540 #endif
 541 }
 542
 543 #ifdef PM8001_USE_MSIX
 544 /**
 545  * pm8001_setup_msix - enable MSI-X interrupt
 546  * @chip_info: our ha struct.
 547  * @irq_handler: irq_handler
 548  */
 549 static u32 pm8001_setup_msix(struct pm8001_hba_info *pm8001_ha,
 550         irq_handler_t irq_handler)
 551 {
 552         u32 i = 0, j = 0;
 553         u32 number_of_intr = 1;
 554         int flag = 0;
 555         u32 max_entry;
 556         int rc;
 557         max_entry = sizeof(pm8001_ha->msix_entries) /
 558                 sizeof(pm8001_ha->msix_entries[0]);
 559         flag |= IRQF_DISABLED;
 560         for (i = 0; i < max_entry ; i++)
 561                 pm8001_ha->msix_entries[i].entry = i;
 562         rc = pci_enable_msix(pm8001_ha->pdev, pm8001_ha->msix_entries,
 563                 number_of_intr);
 564         pm8001_ha->number_of_intr = number_of_intr;
 565         if (!rc) {
 566                 for (i = 0; i < number_of_intr; i++) {
 567                         if (request_irq(pm8001_ha->msix_entries[i].vector,
 568                                 irq_handler, flag, DRV_NAME,
 569                                 SHOST_TO_SAS_HA(pm8001_ha->shost))) {
 570                                 for (j = 0; j < i; j++)
 571                                         free_irq(
 572                                         pm8001_ha->msix_entries[j].vector,
 573                                         SHOST_TO_SAS_HA(pm8001_ha->shost));
 574                                 pci_disable_msix(pm8001_ha->pdev);
 575                                 break;
 576                         }
 577                 }
 578         }
 579         return rc;
 580 }
 581 #endif
 582
 583 /**
 584  * pm8001_request_irq - register interrupt
 585  * @chip_info: our ha struct.
 586  */
 587 static u32 pm8001_request_irq(struct pm8001_hba_info *pm8001_ha)
 588 {
 589         struct pci_dev *pdev;
 590         irq_handler_t irq_handler = pm8001_interrupt;
 591         int rc;
 592
 593         pdev = pm8001_ha->pdev;
 594
 595 #ifdef PM8001_USE_MSIX
 596         if (pci_find_capability(pdev, PCI_CAP_ID_MSIX))
 597                 return pm8001_setup_msix(pm8001_ha, irq_handler);
 598         else
 599                 goto intx;
 600 #endif
 601
 602 intx:
 603         /* initialize the INT-X interrupt */
 604         rc = request_irq(pdev->irq, irq_handler, IRQF_SHARED, DRV_NAME,
 605                 SHOST_TO_SAS_HA(pm8001_ha->shost));
 606         return rc;
 607 }
 608
 609 /**
 610  * pm8001_pci_probe - probe supported device
 611  * @pdev: pci device which kernel has been prepared for.
 612  * @ent: pci device id
 613  *
 614  * This function is the main initialization function, when register a new
 615  * pci driver it is invoked, all struct an hardware initilization should be done
 616  * here, also, register interrupt
 617  */
 618 static int pm8001_pci_probe(struct pci_dev *pdev,
 619                             const struct pci_device_id *ent)
 620 {
 621         unsigned int rc;
 622         u32     pci_reg;
 623         struct pm8001_hba_info *pm8001_ha;
 624         struct Scsi_Host *shost = NULL;
 625         const struct pm8001_chip_info *chip;
 626
 627         dev_printk(KERN_INFO, &pdev->dev,
 628                 "pm8001: driver version %s\n", DRV_VERSION);
 629         rc = pci_enable_device(pdev);
 630         if (rc)
 631                 goto err_out_enable;
 632         pci_set_master(pdev);
 633         /*
 634          * Enable pci slot busmaster by setting pci command register.
 635          * This is required by FW for Cyclone card.
 636          */
 637
 638         pci_read_config_dword(pdev, PCI_COMMAND, &pci_reg);
 639         pci_reg |= 0x157;
 640         pci_write_config_dword(pdev, PCI_COMMAND, pci_reg);
 641         rc = pci_request_regions(pdev, DRV_NAME);
 642         if (rc)
 643                 goto err_out_disable;
 644         rc = pci_go_44(pdev);
 645         if (rc)
 646                 goto err_out_regions;
 647
 648         shost = scsi_host_alloc(&pm8001_sht, sizeof(void *));
 649         if (!shost) {
 650                 rc = -ENOMEM;
 651                 goto err_out_regions;
 652         }
 653         chip = &pm8001_chips[ent->driver_data];
 654         SHOST_TO_SAS_HA(shost) =
 655                 kzalloc(sizeof(struct sas_ha_struct), GFP_KERNEL);
 656         if (!SHOST_TO_SAS_HA(shost)) {
 657                 rc = -ENOMEM;
 658                 goto err_out_free_host;
 659         }
 660
 661         rc = pm8001_prep_sas_ha_init(shost, chip);
 662         if (rc) {
 663                 rc = -ENOMEM;
 664                 goto err_out_free;
 665         }
 666         pci_set_drvdata(pdev, SHOST_TO_SAS_HA(shost));
 667         pm8001_ha = pm8001_pci_alloc(pdev, chip_8001, shost);
 668         if (!pm8001_ha) {
 669                 rc = -ENOMEM;
 670                 goto err_out_free;
 671         }
 672         list_add_tail(&pm8001_ha->list, &hba_list);
 673         PM8001_CHIP_DISP->chip_soft_rst(pm8001_ha, 0x252acbcd);
 674         rc = PM8001_CHIP_DISP->chip_init(pm8001_ha);
 675         if (rc)
 676                 goto err_out_ha_free;
 677
 678         rc = scsi_add_host(shost, &pdev->dev);
 679         if (rc)
 680                 goto err_out_ha_free;
 681         rc = pm8001_request_irq(pm8001_ha);
 682         if (rc)
 683                 goto err_out_shost;
 684
 685         PM8001_CHIP_DISP->interrupt_enable(pm8001_ha);
 686         pm8001_init_sas_add(pm8001_ha);
 687         pm8001_post_sas_ha_init(shost, chip);
 688         rc = sas_register_ha(SHOST_TO_SAS_HA(shost));
 689         if (rc)
 690                 goto err_out_shost;
 691         scsi_scan_host(pm8001_ha->shost);
 692         return 0;
 693
 694 err_out_shost:
 695         scsi_remove_host(pm8001_ha->shost);
 696 err_out_ha_free:
 697         pm8001_free(pm8001_ha);
 698 err_out_free:
 699         kfree(SHOST_TO_SAS_HA(shost));
 700 err_out_free_host:
 701         kfree(shost);
 702 err_out_regions:
 703         pci_release_regions(pdev);
 704 err_out_disable:
 705         pci_disable_device(pdev);
 706 err_out_enable:
 707         return rc;
 708 }
 709
 710 static void pm8001_pci_remove(struct pci_dev *pdev)
 711 {
 712         struct sas_ha_struct *sha = pci_get_drvdata(pdev);
 713         struct pm8001_hba_info *pm8001_ha;
 714         int i;
 715         pm8001_ha = sha->lldd_ha;
 716         pci_set_drvdata(pdev, NULL);
 717         sas_unregister_ha(sha);
 718         sas_remove_host(pm8001_ha->shost);
 719         list_del(&pm8001_ha->list);
 720         scsi_remove_host(pm8001_ha->shost);
 721         PM8001_CHIP_DISP->interrupt_disable(pm8001_ha);
 722         PM8001_CHIP_DISP->chip_soft_rst(pm8001_ha, 0x252acbcd);
 723
 724 #ifdef PM8001_USE_MSIX
 725         for (i = 0; i < pm8001_ha->number_of_intr; i++)
 726                 synchronize_irq(pm8001_ha->msix_entries[i].vector);
 727         for (i = 0; i < pm8001_ha->number_of_intr; i++)
 728                 free_irq(pm8001_ha->msix_entries[i].vector, sha);
 729         pci_disable_msix(pdev);
 730 #else
 731         free_irq(pm8001_ha->irq, sha);
 732 #endif
 733 #ifdef PM8001_USE_TASKLET
 734         tasklet_kill(&pm8001_ha->tasklet);
 735 #endif
 736         pm8001_free(pm8001_ha);
 737         kfree(sha->sas_phy);
 738         kfree(sha->sas_port);
 739         kfree(sha);
 740         pci_release_regions(pdev);
 741         pci_disable_device(pdev);
 742 }
 743
 744 /**
 745  * pm8001_pci_suspend - power management suspend main entry point
 746  * @pdev: PCI device struct
 747  * @state: PM state change to (usually PCI_D3)
 748  *
 749  * Returns 0 success, anything else error.
 750  */
 751 static int pm8001_pci_suspend(struct pci_dev *pdev, pm_message_t state)
 752 {
 753         struct sas_ha_struct *sha = pci_get_drvdata(pdev);
 754         struct pm8001_hba_info *pm8001_ha;
 755         int i , pos;
 756         u32 device_state;
 757         pm8001_ha = sha->lldd_ha;
 758         flush_workqueue(pm8001_wq);
 759         scsi_block_requests(pm8001_ha->shost);
 760         pos = pci_find_capability(pdev, PCI_CAP_ID_PM);
 761         if (pos == 0) {
 762                 printk(KERN_ERR " PCI PM not supported\n");
 763                 return -ENODEV;
 764         }
 765         PM8001_CHIP_DISP->interrupt_disable(pm8001_ha);
 766         PM8001_CHIP_DISP->chip_soft_rst(pm8001_ha, 0x252acbcd);
 767 #ifdef PM8001_USE_MSIX
 768         for (i = 0; i < pm8001_ha->number_of_intr; i++)
 769                 synchronize_irq(pm8001_ha->msix_entries[i].vector);
 770         for (i = 0; i < pm8001_ha->number_of_intr; i++)
 771                 free_irq(pm8001_ha->msix_entries[i].vector, sha);
 772         pci_disable_msix(pdev);
 773 #else
 774         free_irq(pm8001_ha->irq, sha);
 775 #endif
 776 #ifdef PM8001_USE_TASKLET
 777         tasklet_kill(&pm8001_ha->tasklet);
 778 #endif
 779         device_state = pci_choose_state(pdev, state);
 780         pm8001_printk("pdev=0x%p, slot=%s, entering "
 781                       "operating state [D%d]\n", pdev,
 782                       pm8001_ha->name, device_state);
 783         pci_save_state(pdev);
 784         pci_disable_device(pdev);
 785         pci_set_power_state(pdev, device_state);
 786         return 0;
 787 }
 788
 789 /**
 790  * pm8001_pci_resume - power management resume main entry point
 791  * @pdev: PCI device struct
 792  *
 793  * Returns 0 success, anything else error.
 794  */
 795 static int pm8001_pci_resume(struct pci_dev *pdev)
 796 {
 797         struct sas_ha_struct *sha = pci_get_drvdata(pdev);
 798         struct pm8001_hba_info *pm8001_ha;
 799         int rc;
 800         u32 device_state;
 801         pm8001_ha = sha->lldd_ha;
 802         device_state = pdev->current_state;
 803
 804         pm8001_printk("pdev=0x%p, slot=%s, resuming from previous "
 805                 "operating state [D%d]\n", pdev, pm8001_ha->name, device_state);
 806
 807         pci_set_power_state(pdev, PCI_D0);
 808         pci_enable_wake(pdev, PCI_D0, 0);
 809         pci_restore_state(pdev);
 810         rc = pci_enable_device(pdev);
 811         if (rc) {
 812                 pm8001_printk("slot=%s Enable device failed during resume\n",
 813                               pm8001_ha->name);
 814                 goto err_out_enable;
 815         }
 816
 817         pci_set_master(pdev);
 818         rc = pci_go_44(pdev);
 819         if (rc)
 820                 goto err_out_disable;
 821
 822         PM8001_CHIP_DISP->chip_soft_rst(pm8001_ha, 0x252acbcd);
 823         rc = PM8001_CHIP_DISP->chip_init(pm8001_ha);
 824         if (rc)
 825                 goto err_out_disable;
 826         PM8001_CHIP_DISP->interrupt_disable(pm8001_ha);
 827         rc = pm8001_request_irq(pm8001_ha);
 828         if (rc)
 829                 goto err_out_disable;
 830         #ifdef PM8001_USE_TASKLET
 831         tasklet_init(&pm8001_ha->tasklet, pm8001_tasklet,
 832                     (unsigned long)pm8001_ha);
 833         #endif
 834         PM8001_CHIP_DISP->interrupt_enable(pm8001_ha);
 835         scsi_unblock_requests(pm8001_ha->shost);
 836         return 0;
 837
 838 err_out_disable:
 839         scsi_remove_host(pm8001_ha->shost);
 840         pci_disable_device(pdev);
 841 err_out_enable:
 842         return rc;
 843 }
 844
 845 static struct pci_device_id pm8001_pci_table[] = {
 846         {
 847                 PCI_VDEVICE(PMC_Sierra, 0x8001), chip_8001
 848         },
 849         {
 850                 PCI_DEVICE(0x117c, 0x0042),
 851                 .driver_data = chip_8001
 852         },
 853         {} /* terminate list */
 854 };
 855
 856 static struct pci_driver pm8001_pci_driver = {
 857         .name           = DRV_NAME,
 858         .id_table       = pm8001_pci_table,
 859         .probe          = pm8001_pci_probe,
 860         .remove         = pm8001_pci_remove,
 861         .suspend        = pm8001_pci_suspend,
 862         .resume         = pm8001_pci_resume,
 863 };
 864
 865 /**
 866  *      pm8001_init - initialize scsi transport template
 867  */
 868 static int __init pm8001_init(void)
 869 {
 870         int rc = -ENOMEM;
 871
 872         pm8001_wq = alloc_workqueue("pm8001", 0, 0);
 873         if (!pm8001_wq)
 874                 goto err;
 875
 876         pm8001_id = 0;
 877         pm8001_stt = sas_domain_attach_transport(&pm8001_transport_ops);
 878         if (!pm8001_stt)
 879                 goto err_wq;
 880         rc = pci_register_driver(&pm8001_pci_driver);
 881         if (rc)
 882                 goto err_tp;
 883         return 0;
 884
 885 err_tp:
 886         sas_release_transport(pm8001_stt);
 887 err_wq:
 888         destroy_workqueue(pm8001_wq);
 889 err:
 890         return rc;
 891 }
 892
 893 static void __exit pm8001_exit(void)
 894 {
 895         pci_unregister_driver(&pm8001_pci_driver);
 896         sas_release_transport(pm8001_stt);
 897         destroy_workqueue(pm8001_wq);
 898 }
 899
 900 module_init(pm8001_init);
 901 module_exit(pm8001_exit);
 902
 903 MODULE_AUTHOR("Jack Wang <jack_wang@usish.com>");
 904 MODULE_DESCRIPTION("PMC-Sierra PM8001 SAS/SATA controller driver");
 905 MODULE_VERSION(DRV_VERSION);
 906 MODULE_LICENSE("GPL");
 907 MODULE_DEVICE_TABLE(pci, pm8001_pci_table);
 908