drivers/scsi/dpt_i2o.c

   1 /***************************************************************************
   2                           dpti.c  -  description
   3                              -------------------
   4     begin                : Thu Sep 7 2000
   5     copyright            : (C) 2000 by Adaptec
   6
   7                            July 30, 2001 First version being submitted
   8                            for inclusion in the kernel.  V2.4
   9
  10     See Documentation/scsi/dpti.txt for history, notes, license info
  11     and credits
  12  ***************************************************************************/
  13
  14 /***************************************************************************
  15  *                                                                         *
  16  *   This program is free software; you can redistribute it and/or modify  *
  17  *   it under the terms of the GNU General Public License as published by  *
  18  *   the Free Software Foundation; either version 2 of the License, or     *
  19  *   (at your option) any later version.                                   *
  20  *                                                                         *
  21  ***************************************************************************/
  22 /***************************************************************************
  23  * Sat Dec 20 2003 Go Taniguchi <go@turbolinux.co.jp>
  24  - Support 2.6 kernel and DMA-mapping
  25  - ioctl fix for raid tools
  26  - use schedule_timeout in long long loop
  27  **************************************************************************/
  28
  29 /*#define DEBUG 1 */
  30 /*#define UARTDELAY 1 */
  31
  32 #include <linux/module.h>
  33
  34 MODULE_AUTHOR("Deanna Bonds, with _lots_ of help from Mark Salyzyn");
  35 MODULE_DESCRIPTION("Adaptec I2O RAID Driver");
  36
  37 ////////////////////////////////////////////////////////////////
  38
  39 #include <linux/ioctl.h>        /* For SCSI-Passthrough */
  40 #include <linux/uaccess.h>
  41
  42 #include <linux/stat.h>
  43 #include <linux/slab.h>         /* for kmalloc() */
  44 #include <linux/pci.h>          /* for PCI support */
  45 #include <linux/proc_fs.h>
  46 #include <linux/blkdev.h>
  47 #include <linux/delay.h>        /* for udelay */
  48 #include <linux/interrupt.h>
  49 #include <linux/kernel.h>       /* for printk */
  50 #include <linux/sched.h>
  51 #include <linux/reboot.h>
  52 #include <linux/spinlock.h>
  53 #include <linux/dma-mapping.h>
  54
  55 #include <linux/timer.h>
  56 #include <linux/string.h>
  57 #include <linux/ioport.h>
  58 #include <linux/mutex.h>
  59
  60 #include <asm/processor.h>      /* for boot_cpu_data */
  61 #include <asm/pgtable.h>
  62 #include <asm/io.h>             /* for virt_to_bus, etc. */
  63
  64 #include <scsi/scsi.h>
  65 #include <scsi/scsi_cmnd.h>
  66 #include <scsi/scsi_device.h>
  67 #include <scsi/scsi_host.h>
  68 #include <scsi/scsi_tcq.h>
  69
  70 #include "dpt/dptsig.h"
  71 #include "dpti.h"
  72
  73 /*============================================================================
  74  * Create a binary signature - this is read by dptsig
  75  * Needed for our management apps
  76  *============================================================================
  77  */
  78 static DEFINE_MUTEX(adpt_mutex);
  79 static dpt_sig_S DPTI_sig = {
  80         {'d', 'P', 't', 'S', 'i', 'G'}, SIG_VERSION,
  81 #ifdef __i386__
  82         PROC_INTEL, PROC_386 | PROC_486 | PROC_PENTIUM | PROC_SEXIUM,
  83 #elif defined(__ia64__)
  84         PROC_INTEL, PROC_IA64,
  85 #elif defined(__sparc__)
  86         PROC_ULTRASPARC, PROC_ULTRASPARC,
  87 #elif defined(__alpha__)
  88         PROC_ALPHA, PROC_ALPHA,
  89 #else
  90         (-1),(-1),
  91 #endif
  92          FT_HBADRVR, 0, OEM_DPT, OS_LINUX, CAP_OVERLAP, DEV_ALL,
  93         ADF_ALL_SC5, 0, 0, DPT_VERSION, DPT_REVISION, DPT_SUBREVISION,
  94         DPT_MONTH, DPT_DAY, DPT_YEAR, "Adaptec Linux I2O RAID Driver"
  95 };
  96
  97
  98
  99
 100 /*============================================================================
 101  * Globals
 102  *============================================================================
 103  */
 104
 105 static DEFINE_MUTEX(adpt_configuration_lock);
 106
 107 static struct i2o_sys_tbl *sys_tbl;
 108 static dma_addr_t sys_tbl_pa;
 109 static int sys_tbl_ind;
 110 static int sys_tbl_len;
 111
 112 static adpt_hba* hba_chain = NULL;
 113 static int hba_count = 0;
 114
 115 static struct class *adpt_sysfs_class;
 116
 117 static long adpt_unlocked_ioctl(struct file *, unsigned int, unsigned long);
 118 #ifdef CONFIG_COMPAT
 119 static long compat_adpt_ioctl(struct file *, unsigned int, unsigned long);
 120 #endif
 121
 122 static const struct file_operations adpt_fops = {
 123         .unlocked_ioctl = adpt_unlocked_ioctl,
 124         .open           = adpt_open,
 125         .release        = adpt_close,
 126 #ifdef CONFIG_COMPAT
 127         .compat_ioctl   = compat_adpt_ioctl,
 128 #endif
 129         .llseek         = noop_llseek,
 130 };
 131
 132 /* Structures and definitions for synchronous message posting.
 133  * See adpt_i2o_post_wait() for description
 134  * */
 135 struct adpt_i2o_post_wait_data
 136 {
 137         int status;
 138         u32 id;
 139         adpt_wait_queue_head_t *wq;
 140         struct adpt_i2o_post_wait_data *next;
 141 };
 142
 143 static struct adpt_i2o_post_wait_data *adpt_post_wait_queue = NULL;
 144 static u32 adpt_post_wait_id = 0;
 145 static DEFINE_SPINLOCK(adpt_post_wait_lock);
 146
 147
 148 /*============================================================================
 149  *                              Functions
 150  *============================================================================
 151  */
 152
 153 static inline int dpt_dma64(adpt_hba *pHba)
 154 {
 155         return (sizeof(dma_addr_t) > 4 && (pHba)->dma64);
 156 }
 157
 158 static inline u32 dma_high(dma_addr_t addr)
 159 {
 160         return upper_32_bits(addr);
 161 }
 162
 163 static inline u32 dma_low(dma_addr_t addr)
 164 {
 165         return (u32)addr;
 166 }
 167
 168 static u8 adpt_read_blink_led(adpt_hba* host)
 169 {
 170         if (host->FwDebugBLEDflag_P) {
 171                 if( readb(host->FwDebugBLEDflag_P) == 0xbc ){
 172                         return readb(host->FwDebugBLEDvalue_P);
 173                 }
 174         }
 175         return 0;
 176 }
 177
 178 /*============================================================================
 179  * Scsi host template interface functions
 180  *============================================================================
 181  */
 182
 183 #ifdef MODULE
 184 static struct pci_device_id dptids[] = {
 185         { PCI_DPT_VENDOR_ID, PCI_DPT_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,},
 186         { PCI_DPT_VENDOR_ID, PCI_DPT_RAPTOR_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,},
 187         { 0, }
 188 };
 189 #endif
 190
 191 MODULE_DEVICE_TABLE(pci,dptids);
 192
 193 static int adpt_detect(struct scsi_host_template* sht)
 194 {
 195         struct pci_dev *pDev = NULL;
 196         adpt_hba *pHba;
 197         adpt_hba *next;
 198
 199         PINFO("Detecting Adaptec I2O RAID controllers...\n");
 200
 201         /* search for all Adatpec I2O RAID cards */
 202         while ((pDev = pci_get_device( PCI_DPT_VENDOR_ID, PCI_ANY_ID, pDev))) {
 203                 if(pDev->device == PCI_DPT_DEVICE_ID ||
 204                    pDev->device == PCI_DPT_RAPTOR_DEVICE_ID){
 205                         if(adpt_install_hba(sht, pDev) ){
 206                                 PERROR("Could not Init an I2O RAID device\n");
 207                                 PERROR("Will not try to detect others.\n");
 208                                 return hba_count-1;
 209                         }
 210                         pci_dev_get(pDev);
 211                 }
 212         }
 213
 214         /* In INIT state, Activate IOPs */
 215         for (pHba = hba_chain; pHba; pHba = next) {
 216                 next = pHba->next;
 217                 // Activate does get status , init outbound, and get hrt
 218                 if (adpt_i2o_activate_hba(pHba) < 0) {
 219                         adpt_i2o_delete_hba(pHba);
 220                 }
 221         }
 222
 223
 224         /* Active IOPs in HOLD state */
 225
 226 rebuild_sys_tab:
 227         if (hba_chain == NULL)
 228                 return 0;
 229
 230         /*
 231          * If build_sys_table fails, we kill everything and bail
 232          * as we can't init the IOPs w/o a system table
 233          */
 234         if (adpt_i2o_build_sys_table() < 0) {
 235                 adpt_i2o_sys_shutdown();
 236                 return 0;
 237         }
 238
 239         PDEBUG("HBA's in HOLD state\n");
 240
 241         /* If IOP don't get online, we need to rebuild the System table */
 242         for (pHba = hba_chain; pHba; pHba = pHba->next) {
 243                 if (adpt_i2o_online_hba(pHba) < 0) {
 244                         adpt_i2o_delete_hba(pHba);
 245                         goto rebuild_sys_tab;
 246                 }
 247         }
 248
 249         /* Active IOPs now in OPERATIONAL state */
 250         PDEBUG("HBA's in OPERATIONAL state\n");
 251
 252         printk("dpti: If you have a lot of devices this could take a few minutes.\n");
 253         for (pHba = hba_chain; pHba; pHba = next) {
 254                 next = pHba->next;
 255                 printk(KERN_INFO"%s: Reading the hardware resource table.\n", pHba->name);
 256                 if (adpt_i2o_lct_get(pHba) < 0){
 257                         adpt_i2o_delete_hba(pHba);
 258                         continue;
 259                 }
 260
 261                 if (adpt_i2o_parse_lct(pHba) < 0){
 262                         adpt_i2o_delete_hba(pHba);
 263                         continue;
 264                 }
 265                 adpt_inquiry(pHba);
 266         }
 267
 268         adpt_sysfs_class = class_create(THIS_MODULE, "dpt_i2o");
 269         if (IS_ERR(adpt_sysfs_class)) {
 270                 printk(KERN_WARNING"dpti: unable to create dpt_i2o class\n");
 271                 adpt_sysfs_class = NULL;
 272         }
 273
 274         for (pHba = hba_chain; pHba; pHba = next) {
 275                 next = pHba->next;
 276                 if (adpt_scsi_host_alloc(pHba, sht) < 0){
 277                         adpt_i2o_delete_hba(pHba);
 278                         continue;
 279                 }
 280                 pHba->initialized = TRUE;
 281                 pHba->state &= ~DPTI_STATE_RESET;
 282                 if (adpt_sysfs_class) {
 283                         struct device *dev = device_create(adpt_sysfs_class,
 284                                 NULL, MKDEV(DPTI_I2O_MAJOR, pHba->unit), NULL,
 285                                 "dpti%d", pHba->unit);
 286                         if (IS_ERR(dev)) {
 287                                 printk(KERN_WARNING"dpti%d: unable to "
 288                                         "create device in dpt_i2o class\n",
 289                                         pHba->unit);
 290                         }
 291                 }
 292         }
 293
 294         // Register our control device node
 295         // nodes will need to be created in /dev to access this
 296         // the nodes can not be created from within the driver
 297         if (hba_count && register_chrdev(DPTI_I2O_MAJOR, DPT_DRIVER, &adpt_fops)) {
 298                 adpt_i2o_sys_shutdown();
 299                 return 0;
 300         }
 301         return hba_count;
 302 }
 303
 304
 305 static void adpt_release(adpt_hba *pHba)
 306 {
 307         struct Scsi_Host *shost = pHba->host;
 308
 309         scsi_remove_host(shost);
 310 //      adpt_i2o_quiesce_hba(pHba);
 311         adpt_i2o_delete_hba(pHba);
 312         scsi_host_put(shost);
 313 }
 314
 315
 316 static void adpt_inquiry(adpt_hba* pHba)
 317 {
 318         u32 msg[17];
 319         u32 *mptr;
 320         u32 *lenptr;
 321         int direction;
 322         int scsidir;
 323         u32 len;
 324         u32 reqlen;
 325         u8* buf;
 326         dma_addr_t addr;
 327         u8  scb[16];
 328         s32 rcode;
 329
 330         memset(msg, 0, sizeof(msg));
 331         buf = dma_alloc_coherent(&pHba->pDev->dev, 80, &addr, GFP_KERNEL);
 332         if(!buf){
 333                 printk(KERN_ERR"%s: Could not allocate buffer\n",pHba->name);
 334                 return;
 335         }
 336         memset((void*)buf, 0, 36);
 337
 338         len = 36;
 339         direction = 0x00000000;
 340         scsidir  =0x40000000;   // DATA IN  (iop<--dev)
 341
 342         if (dpt_dma64(pHba))
 343                 reqlen = 17;            // SINGLE SGE, 64 bit
 344         else
 345                 reqlen = 14;            // SINGLE SGE, 32 bit
 346         /* Stick the headers on */
 347         msg[0] = reqlen<<16 | SGL_OFFSET_12;
 348         msg[1] = (0xff<<24|HOST_TID<<12|ADAPTER_TID);
 349         msg[2] = 0;
 350         msg[3]  = 0;
 351         // Adaptec/DPT Private stuff
 352         msg[4] = I2O_CMD_SCSI_EXEC|DPT_ORGANIZATION_ID<<16;
 353         msg[5] = ADAPTER_TID | 1<<16 /* Interpret*/;
 354         /* Direction, disconnect ok | sense data | simple queue , CDBLen */
 355         // I2O_SCB_FLAG_ENABLE_DISCONNECT |
 356         // I2O_SCB_FLAG_SIMPLE_QUEUE_TAG |
 357         // I2O_SCB_FLAG_SENSE_DATA_IN_MESSAGE;
 358         msg[6] = scsidir|0x20a00000| 6 /* cmd len*/;
 359
 360         mptr=msg+7;
 361
 362         memset(scb, 0, sizeof(scb));
 363         // Write SCSI command into the message - always 16 byte block
 364         scb[0] = INQUIRY;
 365         scb[1] = 0;
 366         scb[2] = 0;
 367         scb[3] = 0;
 368         scb[4] = 36;
 369         scb[5] = 0;
 370         // Don't care about the rest of scb
 371
 372         memcpy(mptr, scb, sizeof(scb));
 373         mptr+=4;
 374         lenptr=mptr++;          /* Remember me - fill in when we know */
 375
 376         /* Now fill in the SGList and command */
 377         *lenptr = len;
 378         if (dpt_dma64(pHba)) {
 379                 *mptr++ = (0x7C<<24)+(2<<16)+0x02; /* Enable 64 bit */
 380                 *mptr++ = 1 << PAGE_SHIFT;
 381                 *mptr++ = 0xD0000000|direction|len;
 382                 *mptr++ = dma_low(addr);
 383                 *mptr++ = dma_high(addr);
 384         } else {
 385                 *mptr++ = 0xD0000000|direction|len;
 386                 *mptr++ = addr;
 387         }
 388
 389         // Send it on it's way
 390         rcode = adpt_i2o_post_wait(pHba, msg, reqlen<<2, 120);
 391         if (rcode != 0) {
 392                 sprintf(pHba->detail, "Adaptec I2O RAID");
 393                 printk(KERN_INFO "%s: Inquiry Error (%d)\n",pHba->name,rcode);
 394                 if (rcode != -ETIME && rcode != -EINTR)
 395                         dma_free_coherent(&pHba->pDev->dev, 80, buf, addr);
 396         } else {
 397                 memset(pHba->detail, 0, sizeof(pHba->detail));
 398                 memcpy(&(pHba->detail), "Vendor: Adaptec ", 16);
 399                 memcpy(&(pHba->detail[16]), " Model: ", 8);
 400                 memcpy(&(pHba->detail[24]), (u8*) &buf[16], 16);
 401                 memcpy(&(pHba->detail[40]), " FW: ", 4);
 402                 memcpy(&(pHba->detail[44]), (u8*) &buf[32], 4);
 403                 pHba->detail[48] = '\0';        /* precautionary */
 404                 dma_free_coherent(&pHba->pDev->dev, 80, buf, addr);
 405         }
 406         adpt_i2o_status_get(pHba);
 407         return ;
 408 }
 409
 410
 411 static int adpt_slave_configure(struct scsi_device * device)
 412 {
 413         struct Scsi_Host *host = device->host;
 414         adpt_hba* pHba;
 415
 416         pHba = (adpt_hba *) host->hostdata[0];
 417
 418         if (host->can_queue && device->tagged_supported) {
 419                 scsi_change_queue_depth(device,
 420                                 host->can_queue - 1);
 421         }
 422         return 0;
 423 }
 424
 425 static int adpt_queue_lck(struct scsi_cmnd * cmd, void (*done) (struct scsi_cmnd *))
 426 {
 427         adpt_hba* pHba = NULL;
 428         struct adpt_device* pDev = NULL;        /* dpt per device information */
 429
 430         cmd->scsi_done = done;
 431         /*
 432          * SCSI REQUEST_SENSE commands will be executed automatically by the
 433          * Host Adapter for any errors, so they should not be executed
 434          * explicitly unless the Sense Data is zero indicating that no error
 435          * occurred.
 436          */
 437
 438         if ((cmd->cmnd[0] == REQUEST_SENSE) && (cmd->sense_buffer[0] != 0)) {
 439                 cmd->result = (DID_OK << 16);
 440                 cmd->scsi_done(cmd);
 441                 return 0;
 442         }
 443
 444         pHba = (adpt_hba*)cmd->device->host->hostdata[0];
 445         if (!pHba) {
 446                 return FAILED;
 447         }
 448
 449         rmb();
 450         if ((pHba->state) & DPTI_STATE_RESET)
 451                 return SCSI_MLQUEUE_HOST_BUSY;
 452
 453         // TODO if the cmd->device if offline then I may need to issue a bus rescan
 454         // followed by a get_lct to see if the device is there anymore
 455         if((pDev = (struct adpt_device*) (cmd->device->hostdata)) == NULL) {
 456                 /*
 457                  * First command request for this device.  Set up a pointer
 458                  * to the device structure.  This should be a TEST_UNIT_READY
 459                  * command from scan_scsis_single.
 460                  */
 461                 if ((pDev = adpt_find_device(pHba, (u32)cmd->device->channel, (u32)cmd->device->id, cmd->device->lun)) == NULL) {
 462                         // TODO: if any luns are at this bus, scsi id then fake a TEST_UNIT_READY and INQUIRY response
 463                         // with type 7F (for all luns less than the max for this bus,id) so the lun scan will continue.
 464                         cmd->result = (DID_NO_CONNECT << 16);
 465                         cmd->scsi_done(cmd);
 466                         return 0;
 467                 }
 468                 cmd->device->hostdata = pDev;
 469         }
 470         pDev->pScsi_dev = cmd->device;
 471
 472         /*
 473          * If we are being called from when the device is being reset,
 474          * delay processing of the command until later.
 475          */
 476         if (pDev->state & DPTI_DEV_RESET ) {
 477                 return FAILED;
 478         }
 479         return adpt_scsi_to_i2o(pHba, cmd, pDev);
 480 }
 481
 482 static DEF_SCSI_QCMD(adpt_queue)
 483
 484 static int adpt_bios_param(struct scsi_device *sdev, struct block_device *dev,
 485                 sector_t capacity, int geom[])
 486 {
 487         int heads=-1;
 488         int sectors=-1;
 489         int cylinders=-1;
 490
 491         // *** First lets set the default geometry ****
 492
 493         // If the capacity is less than ox2000
 494         if (capacity < 0x2000 ) {       // floppy
 495                 heads = 18;
 496                 sectors = 2;
 497         }
 498         // else if between 0x2000 and 0x20000
 499         else if (capacity < 0x20000) {
 500                 heads = 64;
 501                 sectors = 32;
 502         }
 503         // else if between 0x20000 and 0x40000
 504         else if (capacity < 0x40000) {
 505                 heads = 65;
 506                 sectors = 63;
 507         }
 508         // else if between 0x4000 and 0x80000
 509         else if (capacity < 0x80000) {
 510                 heads = 128;
 511                 sectors = 63;
 512         }
 513         // else if greater than 0x80000
 514         else {
 515                 heads = 255;
 516                 sectors = 63;
 517         }
 518         cylinders = sector_div(capacity, heads * sectors);
 519
 520         // Special case if CDROM
 521         if(sdev->type == 5) {  // CDROM
 522                 heads = 252;
 523                 sectors = 63;
 524                 cylinders = 1111;
 525         }
 526
 527         geom[0] = heads;
 528         geom[1] = sectors;
 529         geom[2] = cylinders;
 530
 531         PDEBUG("adpt_bios_param: exit\n");
 532         return 0;
 533 }
 534
 535
 536 static const char *adpt_info(struct Scsi_Host *host)
 537 {
 538         adpt_hba* pHba;
 539
 540         pHba = (adpt_hba *) host->hostdata[0];
 541         return (char *) (pHba->detail);
 542 }
 543
 544 static int adpt_show_info(struct seq_file *m, struct Scsi_Host *host)
 545 {
 546         struct adpt_device* d;
 547         int id;
 548         int chan;
 549         adpt_hba* pHba;
 550         int unit;
 551
 552         // Find HBA (host bus adapter) we are looking for
 553         mutex_lock(&adpt_configuration_lock);
 554         for (pHba = hba_chain; pHba; pHba = pHba->next) {
 555                 if (pHba->host == host) {
 556                         break;  /* found adapter */
 557                 }
 558         }
 559         mutex_unlock(&adpt_configuration_lock);
 560         if (pHba == NULL) {
 561                 return 0;
 562         }
 563         host = pHba->host;
 564
 565         seq_printf(m, "Adaptec I2O RAID Driver Version: %s\n\n", DPT_I2O_VERSION);
 566         seq_printf(m, "%s\n", pHba->detail);
 567         seq_printf(m, "SCSI Host=scsi%d  Control Node=/dev/%s  irq=%d\n",
 568                         pHba->host->host_no, pHba->name, host->irq);
 569         seq_printf(m, "\tpost fifo size  = %d\n\treply fifo size = %d\n\tsg table size   = %d\n\n",
 570                         host->can_queue, (int) pHba->reply_fifo_size , host->sg_tablesize);
 571
 572         seq_puts(m, "Devices:\n");
 573         for(chan = 0; chan < MAX_CHANNEL; chan++) {
 574                 for(id = 0; id < MAX_ID; id++) {
 575                         d = pHba->channel[chan].device[id];
 576                         while(d) {
 577                                 seq_printf(m,"\t%-24.24s", d->pScsi_dev->vendor);
 578                                 seq_printf(m," Rev: %-8.8s\n", d->pScsi_dev->rev);
 579
 580                                 unit = d->pI2o_dev->lct_data.tid;
 581                                 seq_printf(m, "\tTID=%d, (Channel=%d, Target=%d, Lun=%llu)  (%s)\n\n",
 582                                                unit, (int)d->scsi_channel, (int)d->scsi_id, d->scsi_lun,
 583                                                scsi_device_online(d->pScsi_dev)? "online":"offline");
 584                                 d = d->next_lun;
 585                         }
 586                 }
 587         }
 588         return 0;
 589 }
 590
 591 /*
 592  *      Turn a struct scsi_cmnd * into a unique 32 bit 'context'.
 593  */
 594 static u32 adpt_cmd_to_context(struct scsi_cmnd *cmd)
 595 {
 596         return (u32)cmd->serial_number;
 597 }
 598
 599 /*
 600  *      Go from a u32 'context' to a struct scsi_cmnd * .
 601  *      This could probably be made more efficient.
 602  */
 603 static struct scsi_cmnd *
 604         adpt_cmd_from_context(adpt_hba * pHba, u32 context)
 605 {
 606         struct scsi_cmnd * cmd;
 607         struct scsi_device * d;
 608
 609         if (context == 0)
 610                 return NULL;
 611
 612         spin_unlock(pHba->host->host_lock);
 613         shost_for_each_device(d, pHba->host) {
 614                 unsigned long flags;
 615                 spin_lock_irqsave(&d->list_lock, flags);
 616                 list_for_each_entry(cmd, &d->cmd_list, list) {
 617                         if (((u32)cmd->serial_number == context)) {
 618                                 spin_unlock_irqrestore(&d->list_lock, flags);
 619                                 scsi_device_put(d);
 620                                 spin_lock(pHba->host->host_lock);
 621                                 return cmd;
 622                         }
 623                 }
 624                 spin_unlock_irqrestore(&d->list_lock, flags);
 625         }
 626         spin_lock(pHba->host->host_lock);
 627
 628         return NULL;
 629 }
 630
 631 /*
 632  *      Turn a pointer to ioctl reply data into an u32 'context'
 633  */
 634 static u32 adpt_ioctl_to_context(adpt_hba * pHba, void *reply)
 635 {
 636 #if BITS_PER_LONG == 32
 637         return (u32)(unsigned long)reply;
 638 #else
 639         ulong flags = 0;
 640         u32 nr, i;
 641
 642         spin_lock_irqsave(pHba->host->host_lock, flags);
 643         nr = ARRAY_SIZE(pHba->ioctl_reply_context);
 644         for (i = 0; i < nr; i++) {
 645                 if (pHba->ioctl_reply_context[i] == NULL) {
 646                         pHba->ioctl_reply_context[i] = reply;
 647                         break;
 648                 }
 649         }
 650         spin_unlock_irqrestore(pHba->host->host_lock, flags);
 651         if (i >= nr) {
 652                 printk(KERN_WARNING"%s: Too many outstanding "
 653                                 "ioctl commands\n", pHba->name);
 654                 return (u32)-1;
 655         }
 656
 657         return i;
 658 #endif
 659 }
 660
 661 /*
 662  *      Go from an u32 'context' to a pointer to ioctl reply data.
 663  */
 664 static void *adpt_ioctl_from_context(adpt_hba *pHba, u32 context)
 665 {
 666 #if BITS_PER_LONG == 32
 667         return (void *)(unsigned long)context;
 668 #else
 669         void *p = pHba->ioctl_reply_context[context];
 670         pHba->ioctl_reply_context[context] = NULL;
 671
 672         return p;
 673 #endif
 674 }
 675
 676 /*===========================================================================
 677  * Error Handling routines
 678  *===========================================================================
 679  */
 680
 681 static int adpt_abort(struct scsi_cmnd * cmd)
 682 {
 683         adpt_hba* pHba = NULL;  /* host bus adapter structure */
 684         struct adpt_device* dptdevice;  /* dpt per device information */
 685         u32 msg[5];
 686         int rcode;
 687
 688         if(cmd->serial_number == 0){
 689                 return FAILED;
 690         }
 691         pHba = (adpt_hba*) cmd->device->host->hostdata[0];
 692         printk(KERN_INFO"%s: Trying to Abort\n",pHba->name);
 693         if ((dptdevice = (void*) (cmd->device->hostdata)) == NULL) {
 694                 printk(KERN_ERR "%s: Unable to abort: No device in cmnd\n",pHba->name);
 695                 return FAILED;
 696         }
 697
 698         memset(msg, 0, sizeof(msg));
 699         msg[0] = FIVE_WORD_MSG_SIZE|SGL_OFFSET_0;
 700         msg[1] = I2O_CMD_SCSI_ABORT<<24|HOST_TID<<12|dptdevice->tid;
 701         msg[2] = 0;
 702         msg[3]= 0;
 703         msg[4] = adpt_cmd_to_context(cmd);
 704         if (pHba->host)
 705                 spin_lock_irq(pHba->host->host_lock);
 706         rcode = adpt_i2o_post_wait(pHba, msg, sizeof(msg), FOREVER);
 707         if (pHba->host)
 708                 spin_unlock_irq(pHba->host->host_lock);
 709         if (rcode != 0) {
 710                 if(rcode == -EOPNOTSUPP ){
 711                         printk(KERN_INFO"%s: Abort cmd not supported\n",pHba->name);
 712                         return FAILED;
 713                 }
 714                 printk(KERN_INFO"%s: Abort failed.\n",pHba->name);
 715                 return FAILED;
 716         }
 717         printk(KERN_INFO"%s: Abort complete.\n",pHba->name);
 718         return SUCCESS;
 719 }
 720
 721
 722 #define I2O_DEVICE_RESET 0x27
 723 // This is the same for BLK and SCSI devices
 724 // NOTE this is wrong in the i2o.h definitions
 725 // This is not currently supported by our adapter but we issue it anyway
 726 static int adpt_device_reset(struct scsi_cmnd* cmd)
 727 {
 728         adpt_hba* pHba;
 729         u32 msg[4];
 730         u32 rcode;
 731         int old_state;
 732         struct adpt_device* d = cmd->device->hostdata;
 733
 734         pHba = (void*) cmd->device->host->hostdata[0];
 735         printk(KERN_INFO"%s: Trying to reset device\n",pHba->name);
 736         if (!d) {
 737                 printk(KERN_INFO"%s: Reset Device: Device Not found\n",pHba->name);
 738                 return FAILED;
 739         }
 740         memset(msg, 0, sizeof(msg));
 741         msg[0] = FOUR_WORD_MSG_SIZE|SGL_OFFSET_0;
 742         msg[1] = (I2O_DEVICE_RESET<<24|HOST_TID<<12|d->tid);
 743         msg[2] = 0;
 744         msg[3] = 0;
 745
 746         if (pHba->host)
 747                 spin_lock_irq(pHba->host->host_lock);
 748         old_state = d->state;
 749         d->state |= DPTI_DEV_RESET;
 750         rcode = adpt_i2o_post_wait(pHba, msg,sizeof(msg), FOREVER);
 751         d->state = old_state;
 752         if (pHba->host)
 753                 spin_unlock_irq(pHba->host->host_lock);
 754         if (rcode != 0) {
 755                 if(rcode == -EOPNOTSUPP ){
 756                         printk(KERN_INFO"%s: Device reset not supported\n",pHba->name);
 757                         return FAILED;
 758                 }
 759                 printk(KERN_INFO"%s: Device reset failed\n",pHba->name);
 760                 return FAILED;
 761         } else {
 762                 printk(KERN_INFO"%s: Device reset successful\n",pHba->name);
 763                 return SUCCESS;
 764         }
 765 }
 766
 767
 768 #define I2O_HBA_BUS_RESET 0x87
 769 // This version of bus reset is called by the eh_error handler
 770 static int adpt_bus_reset(struct scsi_cmnd* cmd)
 771 {
 772         adpt_hba* pHba;
 773         u32 msg[4];
 774         u32 rcode;
 775
 776         pHba = (adpt_hba*)cmd->device->host->hostdata[0];
 777         memset(msg, 0, sizeof(msg));
 778         printk(KERN_WARNING"%s: Bus reset: SCSI Bus %d: tid: %d\n",pHba->name, cmd->device->channel,pHba->channel[cmd->device->channel].tid );
 779         msg[0] = FOUR_WORD_MSG_SIZE|SGL_OFFSET_0;
 780         msg[1] = (I2O_HBA_BUS_RESET<<24|HOST_TID<<12|pHba->channel[cmd->device->channel].tid);
 781         msg[2] = 0;
 782         msg[3] = 0;
 783         if (pHba->host)
 784                 spin_lock_irq(pHba->host->host_lock);
 785         rcode = adpt_i2o_post_wait(pHba, msg,sizeof(msg), FOREVER);
 786         if (pHba->host)
 787                 spin_unlock_irq(pHba->host->host_lock);
 788         if (rcode != 0) {
 789                 printk(KERN_WARNING"%s: Bus reset failed.\n",pHba->name);
 790                 return FAILED;
 791         } else {
 792                 printk(KERN_WARNING"%s: Bus reset success.\n",pHba->name);
 793                 return SUCCESS;
 794         }
 795 }
 796
 797 // This version of reset is called by the eh_error_handler
 798 static int __adpt_reset(struct scsi_cmnd* cmd)
 799 {
 800         adpt_hba* pHba;
 801         int rcode;
 802         char name[32];
 803
 804         pHba = (adpt_hba*)cmd->device->host->hostdata[0];
 805         strncpy(name, pHba->name, sizeof(name));
 806         printk(KERN_WARNING"%s: Hba Reset: scsi id %d: tid: %d\n", name, cmd->device->channel, pHba->channel[cmd->device->channel].tid);
 807         rcode =  adpt_hba_reset(pHba);
 808         if(rcode == 0){
 809                 printk(KERN_WARNING"%s: HBA reset complete\n", name);
 810                 return SUCCESS;
 811         } else {
 812                 printk(KERN_WARNING"%s: HBA reset failed (%x)\n", name, rcode);
 813                 return FAILED;
 814         }
 815 }
 816
 817 static int adpt_reset(struct scsi_cmnd* cmd)
 818 {
 819         int rc;
 820
 821         spin_lock_irq(cmd->device->host->host_lock);
 822         rc = __adpt_reset(cmd);
 823         spin_unlock_irq(cmd->device->host->host_lock);
 824
 825         return rc;
 826 }
 827
 828 // This version of reset is called by the ioctls and indirectly from eh_error_handler via adpt_reset
 829 static int adpt_hba_reset(adpt_hba* pHba)
 830 {
 831         int rcode;
 832
 833         pHba->state |= DPTI_STATE_RESET;
 834
 835         // Activate does get status , init outbound, and get hrt
 836         if ((rcode=adpt_i2o_activate_hba(pHba)) < 0) {
 837                 printk(KERN_ERR "%s: Could not activate\n", pHba->name);
 838                 adpt_i2o_delete_hba(pHba);
 839                 return rcode;
 840         }
 841
 842         if ((rcode=adpt_i2o_build_sys_table()) < 0) {
 843                 adpt_i2o_delete_hba(pHba);
 844                 return rcode;
 845         }
 846         PDEBUG("%s: in HOLD state\n",pHba->name);
 847
 848         if ((rcode=adpt_i2o_online_hba(pHba)) < 0) {
 849                 adpt_i2o_delete_hba(pHba);
 850                 return rcode;
 851         }
 852         PDEBUG("%s: in OPERATIONAL state\n",pHba->name);
 853
 854         if ((rcode=adpt_i2o_lct_get(pHba)) < 0){
 855                 adpt_i2o_delete_hba(pHba);
 856                 return rcode;
 857         }
 858
 859         if ((rcode=adpt_i2o_reparse_lct(pHba)) < 0){
 860                 adpt_i2o_delete_hba(pHba);
 861                 return rcode;
 862         }
 863         pHba->state &= ~DPTI_STATE_RESET;
 864
 865         adpt_fail_posted_scbs(pHba);
 866         return 0;       /* return success */
 867 }
 868
 869 /*===========================================================================
 870  *
 871  *===========================================================================
 872  */
 873
 874
 875 static void adpt_i2o_sys_shutdown(void)
 876 {
 877         adpt_hba *pHba, *pNext;
 878         struct adpt_i2o_post_wait_data *p1, *old;
 879
 880          printk(KERN_INFO"Shutting down Adaptec I2O controllers.\n");
 881          printk(KERN_INFO"   This could take a few minutes if there are many devices attached\n");
 882         /* Delete all IOPs from the controller chain */
 883         /* They should have already been released by the
 884          * scsi-core
 885          */
 886         for (pHba = hba_chain; pHba; pHba = pNext) {
 887                 pNext = pHba->next;
 888                 adpt_i2o_delete_hba(pHba);
 889         }
 890
 891         /* Remove any timedout entries from the wait queue.  */
 892 //      spin_lock_irqsave(&adpt_post_wait_lock, flags);
 893         /* Nothing should be outstanding at this point so just
 894          * free them
 895          */
 896         for(p1 = adpt_post_wait_queue; p1;) {
 897                 old = p1;
 898                 p1 = p1->next;
 899                 kfree(old);
 900         }
 901 //      spin_unlock_irqrestore(&adpt_post_wait_lock, flags);
 902         adpt_post_wait_queue = NULL;
 903
 904          printk(KERN_INFO "Adaptec I2O controllers down.\n");
 905 }
 906
 907 static int adpt_install_hba(struct scsi_host_template* sht, struct pci_dev* pDev)
 908 {
 909
 910         adpt_hba* pHba = NULL;
 911         adpt_hba* p = NULL;
 912         ulong base_addr0_phys = 0;
 913         ulong base_addr1_phys = 0;
 914         u32 hba_map0_area_size = 0;
 915         u32 hba_map1_area_size = 0;
 916         void __iomem *base_addr_virt = NULL;
 917         void __iomem *msg_addr_virt = NULL;
 918         int dma64 = 0;
 919
 920         int raptorFlag = FALSE;
 921
 922         if(pci_enable_device(pDev)) {
 923                 return -EINVAL;
 924         }
 925
 926         if (pci_request_regions(pDev, "dpt_i2o")) {
 927                 PERROR("dpti: adpt_config_hba: pci request region failed\n");
 928                 return -EINVAL;
 929         }
 930
 931         pci_set_master(pDev);
 932
 933         /*
 934          *      See if we should enable dma64 mode.
 935          */
 936         if (sizeof(dma_addr_t) > 4 &&
 937             pci_set_dma_mask(pDev, DMA_BIT_MASK(64)) == 0) {
 938                 if (dma_get_required_mask(&pDev->dev) > DMA_BIT_MASK(32))
 939                         dma64 = 1;
 940         }
 941         if (!dma64 && pci_set_dma_mask(pDev, DMA_BIT_MASK(32)) != 0)
 942                 return -EINVAL;
 943
 944         /* adapter only supports message blocks below 4GB */
 945         pci_set_consistent_dma_mask(pDev, DMA_BIT_MASK(32));
 946
 947         base_addr0_phys = pci_resource_start(pDev,0);
 948         hba_map0_area_size = pci_resource_len(pDev,0);
 949
 950         // Check if standard PCI card or single BAR Raptor
 951         if(pDev->device == PCI_DPT_DEVICE_ID){
 952                 if(pDev->subsystem_device >=0xc032 && pDev->subsystem_device <= 0xc03b){
 953                         // Raptor card with this device id needs 4M
 954                         hba_map0_area_size = 0x400000;
 955                 } else { // Not Raptor - it is a PCI card
 956                         if(hba_map0_area_size > 0x100000 ){
 957                                 hba_map0_area_size = 0x100000;
 958                         }
 959                 }
 960         } else {// Raptor split BAR config
 961                 // Use BAR1 in this configuration
 962                 base_addr1_phys = pci_resource_start(pDev,1);
 963                 hba_map1_area_size = pci_resource_len(pDev,1);
 964                 raptorFlag = TRUE;
 965         }
 966
 967 #if BITS_PER_LONG == 64
 968         /*
 969          *      The original Adaptec 64 bit driver has this comment here:
 970          *      "x86_64 machines need more optimal mappings"
 971          *
 972          *      I assume some HBAs report ridiculously large mappings
 973          *      and we need to limit them on platforms with IOMMUs.
 974          */
 975         if (raptorFlag == TRUE) {
 976                 if (hba_map0_area_size > 128)
 977                         hba_map0_area_size = 128;
 978                 if (hba_map1_area_size > 524288)
 979                         hba_map1_area_size = 524288;
 980         } else {
 981                 if (hba_map0_area_size > 524288)
 982                         hba_map0_area_size = 524288;
 983         }
 984 #endif
 985
 986         base_addr_virt = ioremap(base_addr0_phys,hba_map0_area_size);
 987         if (!base_addr_virt) {
 988                 pci_release_regions(pDev);
 989                 PERROR("dpti: adpt_config_hba: io remap failed\n");
 990                 return -EINVAL;
 991         }
 992
 993         if(raptorFlag == TRUE) {
 994                 msg_addr_virt = ioremap(base_addr1_phys, hba_map1_area_size );
 995                 if (!msg_addr_virt) {
 996                         PERROR("dpti: adpt_config_hba: io remap failed on BAR1\n");
 997                         iounmap(base_addr_virt);
 998                         pci_release_regions(pDev);
 999                         return -EINVAL;
1000                 }
1001         } else {
1002                 msg_addr_virt = base_addr_virt;
1003         }
1004
1005         // Allocate and zero the data structure
1006         pHba = kzalloc(sizeof(adpt_hba), GFP_KERNEL);
1007         if (!pHba) {
1008                 if (msg_addr_virt != base_addr_virt)
1009                         iounmap(msg_addr_virt);
1010                 iounmap(base_addr_virt);
1011                 pci_release_regions(pDev);
1012                 return -ENOMEM;
1013         }
1014
1015         mutex_lock(&adpt_configuration_lock);
1016
1017         if(hba_chain != NULL){
1018                 for(p = hba_chain; p->next; p = p->next);
1019                 p->next = pHba;
1020         } else {
1021                 hba_chain = pHba;
1022         }
1023         pHba->next = NULL;
1024         pHba->unit = hba_count;
1025         sprintf(pHba->name, "dpti%d", hba_count);
1026         hba_count++;
1027
1028         mutex_unlock(&adpt_configuration_lock);
1029
1030         pHba->pDev = pDev;
1031         pHba->base_addr_phys = base_addr0_phys;
1032
1033         // Set up the Virtual Base Address of the I2O Device
1034         pHba->base_addr_virt = base_addr_virt;
1035         pHba->msg_addr_virt = msg_addr_virt;
1036         pHba->irq_mask = base_addr_virt+0x30;
1037         pHba->post_port = base_addr_virt+0x40;
1038         pHba->reply_port = base_addr_virt+0x44;
1039
1040         pHba->hrt = NULL;
1041         pHba->lct = NULL;
1042         pHba->lct_size = 0;
1043         pHba->status_block = NULL;
1044         pHba->post_count = 0;
1045         pHba->state = DPTI_STATE_RESET;
1046         pHba->pDev = pDev;
1047         pHba->devices = NULL;
1048         pHba->dma64 = dma64;
1049
1050         // Initializing the spinlocks
1051         spin_lock_init(&pHba->state_lock);
1052         spin_lock_init(&adpt_post_wait_lock);
1053
1054         if(raptorFlag == 0){
1055                 printk(KERN_INFO "Adaptec I2O RAID controller"
1056                                  " %d at %p size=%x irq=%d%s\n",
1057                         hba_count-1, base_addr_virt,
1058                         hba_map0_area_size, pDev->irq,
1059                         dma64 ? " (64-bit DMA)" : "");
1060         } else {
1061                 printk(KERN_INFO"Adaptec I2O RAID controller %d irq=%d%s\n",
1062                         hba_count-1, pDev->irq,
1063                         dma64 ? " (64-bit DMA)" : "");
1064                 printk(KERN_INFO"     BAR0 %p - size= %x\n",base_addr_virt,hba_map0_area_size);
1065                 printk(KERN_INFO"     BAR1 %p - size= %x\n",msg_addr_virt,hba_map1_area_size);
1066         }
1067
1068         if (request_irq (pDev->irq, adpt_isr, IRQF_SHARED, pHba->name, pHba)) {
1069                 printk(KERN_ERR"%s: Couldn't register IRQ %d\n", pHba->name, pDev->irq);
1070                 adpt_i2o_delete_hba(pHba);
1071                 return -EINVAL;
1072         }
1073
1074         return 0;
1075 }
1076
1077
1078 static void adpt_i2o_delete_hba(adpt_hba* pHba)
1079 {
1080         adpt_hba* p1;
1081         adpt_hba* p2;
1082         struct i2o_device* d;
1083         struct i2o_device* next;
1084         int i;
1085         int j;
1086         struct adpt_device* pDev;
1087         struct adpt_device* pNext;
1088
1089
1090         mutex_lock(&adpt_configuration_lock);
1091         if(pHba->host){
1092                 free_irq(pHba->host->irq, pHba);
1093         }
1094         p2 = NULL;
1095         for( p1 = hba_chain; p1; p2 = p1,p1=p1->next){
1096                 if(p1 == pHba) {
1097                         if(p2) {
1098                                 p2->next = p1->next;
1099                         } else {
1100                                 hba_chain = p1->next;
1101                         }
1102                         break;
1103                 }
1104         }
1105
1106         hba_count--;
1107         mutex_unlock(&adpt_configuration_lock);
1108
1109         iounmap(pHba->base_addr_virt);
1110         pci_release_regions(pHba->pDev);
1111         if(pHba->msg_addr_virt != pHba->base_addr_virt){
1112                 iounmap(pHba->msg_addr_virt);
1113         }
1114         if(pHba->FwDebugBuffer_P)
1115                 iounmap(pHba->FwDebugBuffer_P);
1116         if(pHba->hrt) {
1117                 dma_free_coherent(&pHba->pDev->dev,
1118                         pHba->hrt->num_entries * pHba->hrt->entry_len << 2,
1119                         pHba->hrt, pHba->hrt_pa);
1120         }
1121         if(pHba->lct) {
1122                 dma_free_coherent(&pHba->pDev->dev, pHba->lct_size,
1123                         pHba->lct, pHba->lct_pa);
1124         }
1125         if(pHba->status_block) {
1126                 dma_free_coherent(&pHba->pDev->dev, sizeof(i2o_status_block),
1127                         pHba->status_block, pHba->status_block_pa);
1128         }
1129         if(pHba->reply_pool) {
1130                 dma_free_coherent(&pHba->pDev->dev,
1131                         pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4,
1132                         pHba->reply_pool, pHba->reply_pool_pa);
1133         }
1134
1135         for(d = pHba->devices; d ; d = next){
1136                 next = d->next;
1137                 kfree(d);
1138         }
1139         for(i = 0 ; i < pHba->top_scsi_channel ; i++){
1140                 for(j = 0; j < MAX_ID; j++){
1141                         if(pHba->channel[i].device[j] != NULL){
1142                                 for(pDev = pHba->channel[i].device[j]; pDev; pDev = pNext){
1143                                         pNext = pDev->next_lun;
1144                                         kfree(pDev);
1145                                 }
1146                         }
1147                 }
1148         }
1149         pci_dev_put(pHba->pDev);
1150         if (adpt_sysfs_class)
1151                 device_destroy(adpt_sysfs_class,
1152                                 MKDEV(DPTI_I2O_MAJOR, pHba->unit));
1153         kfree(pHba);
1154
1155         if(hba_count <= 0){
1156                 unregister_chrdev(DPTI_I2O_MAJOR, DPT_DRIVER);
1157                 if (adpt_sysfs_class) {
1158                         class_destroy(adpt_sysfs_class);
1159                         adpt_sysfs_class = NULL;
1160                 }
1161         }
1162 }
1163
1164 static struct adpt_device* adpt_find_device(adpt_hba* pHba, u32 chan, u32 id, u64 lun)
1165 {
1166         struct adpt_device* d;
1167
1168         if(chan < 0 || chan >= MAX_CHANNEL)
1169                 return NULL;
1170
1171         d = pHba->channel[chan].device[id];
1172         if(!d || d->tid == 0) {
1173                 return NULL;
1174         }
1175
1176         /* If it is the only lun at that address then this should match*/
1177         if(d->scsi_lun == lun){
1178                 return d;
1179         }
1180
1181         /* else we need to look through all the luns */
1182         for(d=d->next_lun ; d ; d = d->next_lun){
1183                 if(d->scsi_lun == lun){
1184                         return d;
1185                 }
1186         }
1187         return NULL;
1188 }
1189
1190
1191 static int adpt_i2o_post_wait(adpt_hba* pHba, u32* msg, int len, int timeout)
1192 {
1193         // I used my own version of the WAIT_QUEUE_HEAD
1194         // to handle some version differences
1195         // When embedded in the kernel this could go back to the vanilla one
1196         ADPT_DECLARE_WAIT_QUEUE_HEAD(adpt_wq_i2o_post);
1197         int status = 0;
1198         ulong flags = 0;
1199         struct adpt_i2o_post_wait_data *p1, *p2;
1200         struct adpt_i2o_post_wait_data *wait_data =
1201                 kmalloc(sizeof(struct adpt_i2o_post_wait_data), GFP_ATOMIC);
1202         DECLARE_WAITQUEUE(wait, current);
1203
1204         if (!wait_data)
1205                 return -ENOMEM;
1206
1207         /*
1208          * The spin locking is needed to keep anyone from playing
1209          * with the queue pointers and id while we do the same
1210          */
1211         spin_lock_irqsave(&adpt_post_wait_lock, flags);
1212        // TODO we need a MORE unique way of getting ids
1213        // to support async LCT get
1214         wait_data->next = adpt_post_wait_queue;
1215         adpt_post_wait_queue = wait_data;
1216         adpt_post_wait_id++;
1217         adpt_post_wait_id &= 0x7fff;
1218         wait_data->id =  adpt_post_wait_id;
1219         spin_unlock_irqrestore(&adpt_post_wait_lock, flags);
1220
1221         wait_data->wq = &adpt_wq_i2o_post;
1222         wait_data->status = -ETIMEDOUT;
1223
1224         add_wait_queue(&adpt_wq_i2o_post, &wait);
1225
1226         msg[2] |= 0x80000000 | ((u32)wait_data->id);
1227         timeout *= HZ;
1228         if((status = adpt_i2o_post_this(pHba, msg, len)) == 0){
1229                 set_current_state(TASK_INTERRUPTIBLE);
1230                 if(pHba->host)
1231                         spin_unlock_irq(pHba->host->host_lock);
1232                 if (!timeout)
1233                         schedule();
1234                 else{
1235                         timeout = schedule_timeout(timeout);
1236                         if (timeout == 0) {
1237                                 // I/O issued, but cannot get result in
1238                                 // specified time. Freeing resorces is
1239                                 // dangerous.
1240                                 status = -ETIME;
1241                         }
1242                 }
1243                 if(pHba->host)
1244                         spin_lock_irq(pHba->host->host_lock);
1245         }
1246         remove_wait_queue(&adpt_wq_i2o_post, &wait);
1247
1248         if(status == -ETIMEDOUT){
1249                 printk(KERN_INFO"dpti%d: POST WAIT TIMEOUT\n",pHba->unit);
1250                 // We will have to free the wait_data memory during shutdown
1251                 return status;
1252         }
1253
1254         /* Remove the entry from the queue.  */
1255         p2 = NULL;
1256         spin_lock_irqsave(&adpt_post_wait_lock, flags);
1257         for(p1 = adpt_post_wait_queue; p1; p2 = p1, p1 = p1->next) {
1258                 if(p1 == wait_data) {
1259                         if(p1->status == I2O_DETAIL_STATUS_UNSUPPORTED_FUNCTION ) {
1260                                 status = -EOPNOTSUPP;
1261                         }
1262                         if(p2) {
1263                                 p2->next = p1->next;
1264                         } else {
1265                                 adpt_post_wait_queue = p1->next;
1266                         }
1267                         break;
1268                 }
1269         }
1270         spin_unlock_irqrestore(&adpt_post_wait_lock, flags);
1271
1272         kfree(wait_data);
1273
1274         return status;
1275 }
1276
1277
1278 static s32 adpt_i2o_post_this(adpt_hba* pHba, u32* data, int len)
1279 {
1280
1281         u32 m = EMPTY_QUEUE;
1282         u32 __iomem *msg;
1283         ulong timeout = jiffies + 30*HZ;
1284         do {
1285                 rmb();
1286                 m = readl(pHba->post_port);
1287                 if (m != EMPTY_QUEUE) {
1288                         break;
1289                 }
1290                 if(time_after(jiffies,timeout)){
1291                         printk(KERN_WARNING"dpti%d: Timeout waiting for message frame!\n", pHba->unit);
1292                         return -ETIMEDOUT;
1293                 }
1294                 schedule_timeout_uninterruptible(1);
1295         } while(m == EMPTY_QUEUE);
1296
1297         msg = pHba->msg_addr_virt + m;
1298         memcpy_toio(msg, data, len);
1299         wmb();
1300
1301         //post message
1302         writel(m, pHba->post_port);
1303         wmb();
1304
1305         return 0;
1306 }
1307
1308
1309 static void adpt_i2o_post_wait_complete(u32 context, int status)
1310 {
1311         struct adpt_i2o_post_wait_data *p1 = NULL;
1312         /*
1313          * We need to search through the adpt_post_wait
1314          * queue to see if the given message is still
1315          * outstanding.  If not, it means that the IOP
1316          * took longer to respond to the message than we
1317          * had allowed and timer has already expired.
1318          * Not much we can do about that except log
1319          * it for debug purposes, increase timeout, and recompile
1320          *
1321          * Lock needed to keep anyone from moving queue pointers
1322          * around while we're looking through them.
1323          */
1324
1325         context &= 0x7fff;
1326
1327         spin_lock(&adpt_post_wait_lock);
1328         for(p1 = adpt_post_wait_queue; p1; p1 = p1->next) {
1329                 if(p1->id == context) {
1330                         p1->status = status;
1331                         spin_unlock(&adpt_post_wait_lock);
1332                         wake_up_interruptible(p1->wq);
1333                         return;
1334                 }
1335         }
1336         spin_unlock(&adpt_post_wait_lock);
1337         // If this happens we lose commands that probably really completed
1338         printk(KERN_DEBUG"dpti: Could Not find task %d in wait queue\n",context);
1339         printk(KERN_DEBUG"      Tasks in wait queue:\n");
1340         for(p1 = adpt_post_wait_queue; p1; p1 = p1->next) {
1341                 printk(KERN_DEBUG"           %d\n",p1->id);
1342         }
1343         return;
1344 }
1345
1346 static s32 adpt_i2o_reset_hba(adpt_hba* pHba)
1347 {
1348         u32 msg[8];
1349         u8* status;
1350         dma_addr_t addr;
1351         u32 m = EMPTY_QUEUE ;
1352         ulong timeout = jiffies + (TMOUT_IOPRESET*HZ);
1353
1354         if(pHba->initialized  == FALSE) {       // First time reset should be quick
1355                 timeout = jiffies + (25*HZ);
1356         } else {
1357                 adpt_i2o_quiesce_hba(pHba);
1358         }
1359
1360         do {
1361                 rmb();
1362                 m = readl(pHba->post_port);
1363                 if (m != EMPTY_QUEUE) {
1364                         break;
1365                 }
1366                 if(time_after(jiffies,timeout)){
1367                         printk(KERN_WARNING"Timeout waiting for message!\n");
1368                         return -ETIMEDOUT;
1369                 }
1370                 schedule_timeout_uninterruptible(1);
1371         } while (m == EMPTY_QUEUE);
1372
1373         status = dma_alloc_coherent(&pHba->pDev->dev, 4, &addr, GFP_KERNEL);
1374         if(status == NULL) {
1375                 adpt_send_nop(pHba, m);
1376                 printk(KERN_ERR"IOP reset failed - no free memory.\n");
1377                 return -ENOMEM;
1378         }
1379         memset(status,0,4);
1380
1381         msg[0]=EIGHT_WORD_MSG_SIZE|SGL_OFFSET_0;
1382         msg[1]=I2O_CMD_ADAPTER_RESET<<24|HOST_TID<<12|ADAPTER_TID;
1383         msg[2]=0;
1384         msg[3]=0;
1385         msg[4]=0;
1386         msg[5]=0;
1387         msg[6]=dma_low(addr);
1388         msg[7]=dma_high(addr);
1389
1390         memcpy_toio(pHba->msg_addr_virt+m, msg, sizeof(msg));
1391         wmb();
1392         writel(m, pHba->post_port);
1393         wmb();
1394
1395         while(*status == 0){
1396                 if(time_after(jiffies,timeout)){
1397                         printk(KERN_WARNING"%s: IOP Reset Timeout\n",pHba->name);
1398                         /* We lose 4 bytes of "status" here, but we cannot
1399                            free these because controller may awake and corrupt
1400                            those bytes at any time */
1401                         /* dma_free_coherent(&pHba->pDev->dev, 4, buf, addr); */
1402                         return -ETIMEDOUT;
1403                 }
1404                 rmb();
1405                 schedule_timeout_uninterruptible(1);
1406         }
1407
1408         if(*status == 0x01 /*I2O_EXEC_IOP_RESET_IN_PROGRESS*/) {
1409                 PDEBUG("%s: Reset in progress...\n", pHba->name);
1410                 // Here we wait for message frame to become available
1411                 // indicated that reset has finished
1412                 do {
1413                         rmb();
1414                         m = readl(pHba->post_port);
1415                         if (m != EMPTY_QUEUE) {
1416                                 break;
1417                         }
1418                         if(time_after(jiffies,timeout)){
1419                                 printk(KERN_ERR "%s:Timeout waiting for IOP Reset.\n",pHba->name);
1420                                 /* We lose 4 bytes of "status" here, but we
1421                                    cannot free these because controller may
1422                                    awake and corrupt those bytes at any time */
1423                                 /* dma_free_coherent(&pHba->pDev->dev, 4, buf, addr); */
1424                                 return -ETIMEDOUT;
1425                         }
1426                         schedule_timeout_uninterruptible(1);
1427                 } while (m == EMPTY_QUEUE);
1428                 // Flush the offset
1429                 adpt_send_nop(pHba, m);
1430         }
1431         adpt_i2o_status_get(pHba);
1432         if(*status == 0x02 ||
1433                         pHba->status_block->iop_state != ADAPTER_STATE_RESET) {
1434                 printk(KERN_WARNING"%s: Reset reject, trying to clear\n",
1435                                 pHba->name);
1436         } else {
1437                 PDEBUG("%s: Reset completed.\n", pHba->name);
1438         }
1439
1440         dma_free_coherent(&pHba->pDev->dev, 4, status, addr);
1441 #ifdef UARTDELAY
1442         // This delay is to allow someone attached to the card through the debug UART to
1443         // set up the dump levels that they want before the rest of the initialization sequence
1444         adpt_delay(20000);
1445 #endif
1446         return 0;
1447 }
1448
1449
1450 static int adpt_i2o_parse_lct(adpt_hba* pHba)
1451 {
1452         int i;
1453         int max;
1454         int tid;
1455         struct i2o_device *d;
1456         i2o_lct *lct = pHba->lct;
1457         u8 bus_no = 0;
1458         s16 scsi_id;
1459         u64 scsi_lun;
1460         u32 buf[10]; // larger than 7, or 8 ...
1461         struct adpt_device* pDev;
1462
1463         if (lct == NULL) {
1464                 printk(KERN_ERR "%s: LCT is empty???\n",pHba->name);
1465                 return -1;
1466         }
1467
1468         max = lct->table_size;
1469         max -= 3;
1470         max /= 9;
1471
1472         for(i=0;i<max;i++) {
1473                 if( lct->lct_entry[i].user_tid != 0xfff){
1474                         /*
1475                          * If we have hidden devices, we need to inform the upper layers about
1476                          * the possible maximum id reference to handle device access when
1477                          * an array is disassembled. This code has no other purpose but to
1478                          * allow us future access to devices that are currently hidden
1479                          * behind arrays, hotspares or have not been configured (JBOD mode).
1480                          */
1481                         if( lct->lct_entry[i].class_id != I2O_CLASS_RANDOM_BLOCK_STORAGE &&
1482                             lct->lct_entry[i].class_id != I2O_CLASS_SCSI_PERIPHERAL &&
1483                             lct->lct_entry[i].class_id != I2O_CLASS_FIBRE_CHANNEL_PERIPHERAL ){
1484                                 continue;
1485                         }
1486                         tid = lct->lct_entry[i].tid;
1487                         // I2O_DPT_DEVICE_INFO_GROUP_NO;
1488                         if(adpt_i2o_query_scalar(pHba, tid, 0x8000, -1, buf, 32)<0) {
1489                                 continue;
1490                         }
1491                         bus_no = buf[0]>>16;
1492                         scsi_id = buf[1];
1493                         scsi_lun = scsilun_to_int((struct scsi_lun *)&buf[2]);
1494                         if(bus_no >= MAX_CHANNEL) {     // Something wrong skip it
1495                                 printk(KERN_WARNING"%s: Channel number %d out of range \n", pHba->name, bus_no);
1496                                 continue;
1497                         }
1498                         if (scsi_id >= MAX_ID){
1499                                 printk(KERN_WARNING"%s: SCSI ID %d out of range \n", pHba->name, bus_no);
1500                                 continue;
1501                         }
1502                         if(bus_no > pHba->top_scsi_channel){
1503                                 pHba->top_scsi_channel = bus_no;
1504                         }
1505                         if(scsi_id > pHba->top_scsi_id){
1506                                 pHba->top_scsi_id = scsi_id;
1507                         }
1508                         if(scsi_lun > pHba->top_scsi_lun){
1509                                 pHba->top_scsi_lun = scsi_lun;
1510                         }
1511                         continue;
1512                 }
1513                 d = kmalloc(sizeof(struct i2o_device), GFP_KERNEL);
1514                 if(d==NULL)
1515                 {
1516                         printk(KERN_CRIT"%s: Out of memory for I2O device data.\n",pHba->name);
1517                         return -ENOMEM;
1518                 }
1519
1520                 d->controller = pHba;
1521                 d->next = NULL;
1522
1523                 memcpy(&d->lct_data, &lct->lct_entry[i], sizeof(i2o_lct_entry));
1524
1525                 d->flags = 0;
1526                 tid = d->lct_data.tid;
1527                 adpt_i2o_report_hba_unit(pHba, d);
1528                 adpt_i2o_install_device(pHba, d);
1529         }
1530         bus_no = 0;
1531         for(d = pHba->devices; d ; d = d->next) {
1532                 if(d->lct_data.class_id  == I2O_CLASS_BUS_ADAPTER_PORT ||
1533                    d->lct_data.class_id  == I2O_CLASS_FIBRE_CHANNEL_PORT){
1534                         tid = d->lct_data.tid;
1535                         // TODO get the bus_no from hrt-but for now they are in order
1536                         //bus_no =
1537                         if(bus_no > pHba->top_scsi_channel){
1538                                 pHba->top_scsi_channel = bus_no;
1539                         }
1540                         pHba->channel[bus_no].type = d->lct_data.class_id;
1541                         pHba->channel[bus_no].tid = tid;
1542                         if(adpt_i2o_query_scalar(pHba, tid, 0x0200, -1, buf, 28)>=0)
1543                         {
1544                                 pHba->channel[bus_no].scsi_id = buf[1];
1545                                 PDEBUG("Bus %d - SCSI ID %d.\n", bus_no, buf[1]);
1546                         }
1547                         // TODO remove - this is just until we get from hrt
1548                         bus_no++;
1549                         if(bus_no >= MAX_CHANNEL) {     // Something wrong skip it
1550                                 printk(KERN_WARNING"%s: Channel number %d out of range - LCT\n", pHba->name, bus_no);
1551                                 break;
1552                         }
1553                 }
1554         }
1555
1556         // Setup adpt_device table
1557         for(d = pHba->devices; d ; d = d->next) {
1558                 if(d->lct_data.class_id  == I2O_CLASS_RANDOM_BLOCK_STORAGE ||
1559                    d->lct_data.class_id  == I2O_CLASS_SCSI_PERIPHERAL ||
1560                    d->lct_data.class_id  == I2O_CLASS_FIBRE_CHANNEL_PERIPHERAL ){
1561
1562                         tid = d->lct_data.tid;
1563                         scsi_id = -1;
1564                         // I2O_DPT_DEVICE_INFO_GROUP_NO;
1565                         if(adpt_i2o_query_scalar(pHba, tid, 0x8000, -1, buf, 32)>=0) {
1566                                 bus_no = buf[0]>>16;
1567                                 scsi_id = buf[1];
1568                                 scsi_lun = scsilun_to_int((struct scsi_lun *)&buf[2]);
1569                                 if(bus_no >= MAX_CHANNEL) {     // Something wrong skip it
1570                                         continue;
1571                                 }
1572                                 if (scsi_id >= MAX_ID) {
1573                                         continue;
1574                                 }
1575                                 if( pHba->channel[bus_no].device[scsi_id] == NULL){
1576                                         pDev =  kzalloc(sizeof(struct adpt_device),GFP_KERNEL);
1577                                         if(pDev == NULL) {
1578                                                 return -ENOMEM;
1579                                         }
1580                                         pHba->channel[bus_no].device[scsi_id] = pDev;
1581                                 } else {
1582                                         for( pDev = pHba->channel[bus_no].device[scsi_id];
1583                                                         pDev->next_lun; pDev = pDev->next_lun){
1584                                         }
1585                                         pDev->next_lun = kzalloc(sizeof(struct adpt_device),GFP_KERNEL);
1586                                         if(pDev->next_lun == NULL) {
1587                                                 return -ENOMEM;
1588                                         }
1589                                         pDev = pDev->next_lun;
1590                                 }
1591                                 pDev->tid = tid;
1592                                 pDev->scsi_channel = bus_no;
1593                                 pDev->scsi_id = scsi_id;
1594                                 pDev->scsi_lun = scsi_lun;
1595                                 pDev->pI2o_dev = d;
1596                                 d->owner = pDev;
1597                                 pDev->type = (buf[0])&0xff;
1598                                 pDev->flags = (buf[0]>>8)&0xff;
1599                                 if(scsi_id > pHba->top_scsi_id){
1600                                         pHba->top_scsi_id = scsi_id;
1601                                 }
1602                                 if(scsi_lun > pHba->top_scsi_lun){
1603                                         pHba->top_scsi_lun = scsi_lun;
1604                                 }
1605                         }
1606                         if(scsi_id == -1){
1607                                 printk(KERN_WARNING"Could not find SCSI ID for %s\n",
1608                                                 d->lct_data.identity_tag);
1609                         }
1610                 }
1611         }
1612         return 0;
1613 }
1614
1615
1616 /*
1617  *      Each I2O controller has a chain of devices on it - these match
1618  *      the useful parts of the LCT of the board.
1619  */
1620
1621 static int adpt_i2o_install_device(adpt_hba* pHba, struct i2o_device *d)
1622 {
1623         mutex_lock(&adpt_configuration_lock);
1624         d->controller=pHba;
1625         d->owner=NULL;
1626         d->next=pHba->devices;
1627         d->prev=NULL;
1628         if (pHba->devices != NULL){
1629                 pHba->devices->prev=d;
1630         }
1631         pHba->devices=d;
1632         *d->dev_name = 0;
1633
1634         mutex_unlock(&adpt_configuration_lock);
1635         return 0;
1636 }
1637
1638 static int adpt_open(struct inode *inode, struct file *file)
1639 {
1640         int minor;
1641         adpt_hba* pHba;
1642
1643         mutex_lock(&adpt_mutex);
1644         //TODO check for root access
1645         //
1646         minor = iminor(inode);
1647         if (minor >= hba_count) {
1648                 mutex_unlock(&adpt_mutex);
1649                 return -ENXIO;
1650         }
1651         mutex_lock(&adpt_configuration_lock);
1652         for (pHba = hba_chain; pHba; pHba = pHba->next) {
1653                 if (pHba->unit == minor) {
1654                         break;  /* found adapter */
1655                 }
1656         }
1657         if (pHba == NULL) {
1658                 mutex_unlock(&adpt_configuration_lock);
1659                 mutex_unlock(&adpt_mutex);
1660                 return -ENXIO;
1661         }
1662
1663 //      if(pHba->in_use){
1664         //      mutex_unlock(&adpt_configuration_lock);
1665 //              return -EBUSY;
1666 //      }
1667
1668         pHba->in_use = 1;
1669         mutex_unlock(&adpt_configuration_lock);
1670         mutex_unlock(&adpt_mutex);
1671
1672         return 0;
1673 }
1674
1675 static int adpt_close(struct inode *inode, struct file *file)
1676 {
1677         int minor;
1678         adpt_hba* pHba;
1679
1680         minor = iminor(inode);
1681         if (minor >= hba_count) {
1682                 return -ENXIO;
1683         }
1684         mutex_lock(&adpt_configuration_lock);
1685         for (pHba = hba_chain; pHba; pHba = pHba->next) {
1686                 if (pHba->unit == minor) {
1687                         break;  /* found adapter */
1688                 }
1689         }
1690         mutex_unlock(&adpt_configuration_lock);
1691         if (pHba == NULL) {
1692                 return -ENXIO;
1693         }
1694
1695         pHba->in_use = 0;
1696
1697         return 0;
1698 }
1699
1700
1701 static int adpt_i2o_passthru(adpt_hba* pHba, u32 __user *arg)
1702 {
1703         u32 msg[MAX_MESSAGE_SIZE];
1704         u32* reply = NULL;
1705         u32 size = 0;
1706         u32 reply_size = 0;
1707         u32 __user *user_msg = arg;
1708         u32 __user * user_reply = NULL;
1709         void **sg_list = NULL;
1710         u32 sg_offset = 0;
1711         u32 sg_count = 0;
1712         int sg_index = 0;
1713         u32 i = 0;
1714         u32 rcode = 0;
1715         void *p = NULL;
1716         dma_addr_t addr;
1717         ulong flags = 0;
1718
1719         memset(&msg, 0, MAX_MESSAGE_SIZE*4);
1720         // get user msg size in u32s
1721         if(get_user(size, &user_msg[0])){
1722                 return -EFAULT;
1723         }
1724         size = size>>16;
1725
1726         user_reply = &user_msg[size];
1727         if(size > MAX_MESSAGE_SIZE){
1728                 return -EFAULT;
1729         }
1730         size *= 4; // Convert to bytes
1731
1732         /* Copy in the user's I2O command */
1733         if(copy_from_user(msg, user_msg, size)) {
1734                 return -EFAULT;
1735         }
1736         get_user(reply_size, &user_reply[0]);
1737         reply_size = reply_size>>16;
1738         if(reply_size > REPLY_FRAME_SIZE){
1739                 reply_size = REPLY_FRAME_SIZE;
1740         }
1741         reply_size *= 4;
1742         reply = kzalloc(REPLY_FRAME_SIZE*4, GFP_KERNEL);
1743         if(reply == NULL) {
1744                 printk(KERN_WARNING"%s: Could not allocate reply buffer\n",pHba->name);
1745                 return -ENOMEM;
1746         }
1747         sg_offset = (msg[0]>>4)&0xf;
1748         msg[2] = 0x40000000; // IOCTL context
1749         msg[3] = adpt_ioctl_to_context(pHba, reply);
1750         if (msg[3] == (u32)-1) {
1751                 rcode = -EBUSY;
1752                 goto free;
1753         }
1754
1755         sg_list = kcalloc(pHba->sg_tablesize, sizeof(*sg_list), GFP_KERNEL);
1756         if (!sg_list) {
1757                 rcode = -ENOMEM;
1758                 goto free;
1759         }
1760         if(sg_offset) {
1761                 // TODO add 64 bit API
1762                 struct sg_simple_element *sg =  (struct sg_simple_element*) (msg+sg_offset);
1763                 sg_count = (size - sg_offset*4) / sizeof(struct sg_simple_element);
1764                 if (sg_count > pHba->sg_tablesize){
1765                         printk(KERN_DEBUG"%s:IOCTL SG List too large (%u)\n", pHba->name,sg_count);
1766                         rcode = -EINVAL;
1767                         goto free;
1768                 }
1769
1770                 for(i = 0; i < sg_count; i++) {
1771                         int sg_size;
1772
1773                         if (!(sg[i].flag_count & 0x10000000 /*I2O_SGL_FLAGS_SIMPLE_ADDRESS_ELEMENT*/)) {
1774                                 printk(KERN_DEBUG"%s:Bad SG element %d - not simple (%x)\n",pHba->name,i,  sg[i].flag_count);
1775                                 rcode = -EINVAL;
1776                                 goto cleanup;
1777                         }
1778                         sg_size = sg[i].flag_count & 0xffffff;
1779                         /* Allocate memory for the transfer */
1780                         p = dma_alloc_coherent(&pHba->pDev->dev, sg_size, &addr, GFP_KERNEL);
1781                         if(!p) {
1782                                 printk(KERN_DEBUG"%s: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
1783                                                 pHba->name,sg_size,i,sg_count);
1784                                 rcode = -ENOMEM;
1785                                 goto cleanup;
1786                         }
1787                         sg_list[sg_index++] = p; // sglist indexed with input frame, not our internal frame.
1788                         /* Copy in the user's SG buffer if necessary */
1789                         if(sg[i].flag_count & 0x04000000 /*I2O_SGL_FLAGS_DIR*/) {
1790                                 // sg_simple_element API is 32 bit
1791                                 if (copy_from_user(p,(void __user *)(ulong)sg[i].addr_bus, sg_size)) {
1792                                         printk(KERN_DEBUG"%s: Could not copy SG buf %d FROM user\n",pHba->name,i);
1793                                         rcode = -EFAULT;
1794                                         goto cleanup;
1795                                 }
1796                         }
1797                         /* sg_simple_element API is 32 bit, but addr < 4GB */
1798                         sg[i].addr_bus = addr;
1799                 }
1800         }
1801
1802         do {
1803                 /*
1804                  * Stop any new commands from enterring the
1805                  * controller while processing the ioctl
1806                  */
1807                 if (pHba->host) {
1808                         scsi_block_requests(pHba->host);
1809                         spin_lock_irqsave(pHba->host->host_lock, flags);
1810                 }
1811                 rcode = adpt_i2o_post_wait(pHba, msg, size, FOREVER);
1812                 if (rcode != 0)
1813                         printk("adpt_i2o_passthru: post wait failed %d %p\n",
1814                                         rcode, reply);
1815                 if (pHba->host) {
1816                         spin_unlock_irqrestore(pHba->host->host_lock, flags);
1817                         scsi_unblock_requests(pHba->host);
1818                 }
1819         } while (rcode == -ETIMEDOUT);
1820
1821         if(rcode){
1822                 goto cleanup;
1823         }
1824
1825         if(sg_offset) {
1826         /* Copy back the Scatter Gather buffers back to user space */
1827                 u32 j;
1828                 // TODO add 64 bit API
1829                 struct sg_simple_element* sg;
1830                 int sg_size;
1831
1832                 // re-acquire the original message to handle correctly the sg copy operation
1833                 memset(&msg, 0, MAX_MESSAGE_SIZE*4);
1834                 // get user msg size in u32s
1835                 if(get_user(size, &user_msg[0])){
1836                         rcode = -EFAULT;
1837                         goto cleanup;
1838                 }
1839                 size = size>>16;
1840                 size *= 4;
1841                 if (size > MAX_MESSAGE_SIZE) {
1842                         rcode = -EINVAL;
1843                         goto cleanup;
1844                 }
1845                 /* Copy in the user's I2O command */
1846                 if (copy_from_user (msg, user_msg, size)) {
1847                         rcode = -EFAULT;
1848                         goto cleanup;
1849                 }
1850                 sg_count = (size - sg_offset*4) / sizeof(struct sg_simple_element);
1851
1852                 // TODO add 64 bit API
1853                 sg       = (struct sg_simple_element*)(msg + sg_offset);
1854                 for (j = 0; j < sg_count; j++) {
1855                         /* Copy out the SG list to user's buffer if necessary */
1856                         if(! (sg[j].flag_count & 0x4000000 /*I2O_SGL_FLAGS_DIR*/)) {
1857                                 sg_size = sg[j].flag_count & 0xffffff;
1858                                 // sg_simple_element API is 32 bit
1859                                 if (copy_to_user((void __user *)(ulong)sg[j].addr_bus,sg_list[j], sg_size)) {
1860                                         printk(KERN_WARNING"%s: Could not copy %p TO user %x\n",pHba->name, sg_list[j], sg[j].addr_bus);
1861                                         rcode = -EFAULT;
1862                                         goto cleanup;
1863                                 }
1864                         }
1865                 }
1866         }
1867
1868         /* Copy back the reply to user space */
1869         if (reply_size) {
1870                 // we wrote our own values for context - now restore the user supplied ones
1871                 if(copy_from_user(reply+2, user_msg+2, sizeof(u32)*2)) {
1872                         printk(KERN_WARNING"%s: Could not copy message context FROM user\n",pHba->name);
1873                         rcode = -EFAULT;
1874                 }
1875                 if(copy_to_user(user_reply, reply, reply_size)) {
1876                         printk(KERN_WARNING"%s: Could not copy reply TO user\n",pHba->name);
1877                         rcode = -EFAULT;
1878                 }
1879         }
1880
1881
1882 cleanup:
1883         if (rcode != -ETIME && rcode != -EINTR) {
1884                 struct sg_simple_element *sg =
1885                                 (struct sg_simple_element*) (msg +sg_offset);
1886                 while(sg_index) {
1887                         if(sg_list[--sg_index]) {
1888                                 dma_free_coherent(&pHba->pDev->dev,
1889                                         sg[sg_index].flag_count & 0xffffff,
1890                                         sg_list[sg_index],
1891                                         sg[sg_index].addr_bus);
1892                         }
1893                 }
1894         }
1895
1896 free:
1897         kfree(sg_list);
1898         kfree(reply);
1899         return rcode;
1900 }
1901
1902 #if defined __ia64__
1903 static void adpt_ia64_info(sysInfo_S* si)
1904 {
1905         // This is all the info we need for now
1906         // We will add more info as our new
1907         // managmenent utility requires it
1908         si->processorType = PROC_IA64;
1909 }
1910 #endif
1911
1912 #if defined __sparc__
1913 static void adpt_sparc_info(sysInfo_S* si)
1914 {
1915         // This is all the info we need for now
1916         // We will add more info as our new
1917         // managmenent utility requires it
1918         si->processorType = PROC_ULTRASPARC;
1919 }
1920 #endif
1921 #if defined __alpha__
1922 static void adpt_alpha_info(sysInfo_S* si)
1923 {
1924         // This is all the info we need for now
1925         // We will add more info as our new
1926         // managmenent utility requires it
1927         si->processorType = PROC_ALPHA;
1928 }
1929 #endif
1930
1931 #if defined __i386__
1932
1933 #include <uapi/asm/vm86.h>
1934
1935 static void adpt_i386_info(sysInfo_S* si)
1936 {
1937         // This is all the info we need for now
1938         // We will add more info as our new
1939         // managmenent utility requires it
1940         switch (boot_cpu_data.x86) {
1941         case CPU_386:
1942                 si->processorType = PROC_386;
1943                 break;
1944         case CPU_486:
1945                 si->processorType = PROC_486;
1946                 break;
1947         case CPU_586:
1948                 si->processorType = PROC_PENTIUM;
1949                 break;
1950         default:  // Just in case
1951                 si->processorType = PROC_PENTIUM;
1952                 break;
1953         }
1954 }
1955 #endif
1956
1957 /*
1958  * This routine returns information about the system.  This does not effect
1959  * any logic and if the info is wrong - it doesn't matter.
1960  */
1961
1962 /* Get all the info we can not get from kernel services */
1963 static int adpt_system_info(void __user *buffer)
1964 {
1965         sysInfo_S si;
1966
1967         memset(&si, 0, sizeof(si));
1968
1969         si.osType = OS_LINUX;
1970         si.osMajorVersion = 0;
1971         si.osMinorVersion = 0;
1972         si.osRevision = 0;
1973         si.busType = SI_PCI_BUS;
1974         si.processorFamily = DPTI_sig.dsProcessorFamily;
1975
1976 #if defined __i386__
1977         adpt_i386_info(&si);
1978 #elif defined (__ia64__)
1979         adpt_ia64_info(&si);
1980 #elif defined(__sparc__)
1981         adpt_sparc_info(&si);
1982 #elif defined (__alpha__)
1983         adpt_alpha_info(&si);
1984 #else
1985         si.processorType = 0xff ;
1986 #endif
1987         if (copy_to_user(buffer, &si, sizeof(si))){
1988                 printk(KERN_WARNING"dpti: Could not copy buffer TO user\n");
1989                 return -EFAULT;
1990         }
1991
1992         return 0;
1993 }
1994
1995 static int adpt_ioctl(struct inode *inode, struct file *file, uint cmd, ulong arg)
1996 {
1997         int minor;
1998         int error = 0;
1999         adpt_hba* pHba;
2000         ulong flags = 0;
2001         void __user *argp = (void __user *)arg;
2002
2003         minor = iminor(inode);
2004         if (minor >= DPTI_MAX_HBA){
2005                 return -ENXIO;
2006         }
2007         mutex_lock(&adpt_configuration_lock);
2008         for (pHba = hba_chain; pHba; pHba = pHba->next) {
2009                 if (pHba->unit == minor) {
2010                         break;  /* found adapter */
2011                 }
2012         }
2013         mutex_unlock(&adpt_configuration_lock);
2014         if(pHba == NULL){
2015                 return -ENXIO;
2016         }
2017
2018         while((volatile u32) pHba->state & DPTI_STATE_RESET )
2019                 schedule_timeout_uninterruptible(2);
2020
2021         switch (cmd) {
2022         // TODO: handle 3 cases
2023         case DPT_SIGNATURE:
2024                 if (copy_to_user(argp, &DPTI_sig, sizeof(DPTI_sig))) {
2025                         return -EFAULT;
2026                 }
2027                 break;
2028         case I2OUSRCMD:
2029                 return adpt_i2o_passthru(pHba, argp);
2030
2031         case DPT_CTRLINFO:{
2032                 drvrHBAinfo_S HbaInfo;
2033
2034 #define FLG_OSD_PCI_VALID 0x0001
2035 #define FLG_OSD_DMA       0x0002
2036 #define FLG_OSD_I2O       0x0004
2037                 memset(&HbaInfo, 0, sizeof(HbaInfo));
2038                 HbaInfo.drvrHBAnum = pHba->unit;
2039                 HbaInfo.baseAddr = (ulong) pHba->base_addr_phys;
2040                 HbaInfo.blinkState = adpt_read_blink_led(pHba);
2041                 HbaInfo.pciBusNum =  pHba->pDev->bus->number;
2042                 HbaInfo.pciDeviceNum=PCI_SLOT(pHba->pDev->devfn);
2043                 HbaInfo.Interrupt = pHba->pDev->irq;
2044                 HbaInfo.hbaFlags = FLG_OSD_PCI_VALID | FLG_OSD_DMA | FLG_OSD_I2O;
2045                 if(copy_to_user(argp, &HbaInfo, sizeof(HbaInfo))){
2046                         printk(KERN_WARNING"%s: Could not copy HbaInfo TO user\n",pHba->name);
2047                         return -EFAULT;
2048                 }
2049                 break;
2050                 }
2051         case DPT_SYSINFO:
2052                 return adpt_system_info(argp);
2053         case DPT_BLINKLED:{
2054                 u32 value;
2055                 value = (u32)adpt_read_blink_led(pHba);
2056                 if (copy_to_user(argp, &value, sizeof(value))) {
2057                         return -EFAULT;
2058                 }
2059                 break;
2060                 }
2061         case I2ORESETCMD: {
2062                 struct Scsi_Host *shost = pHba->host;
2063
2064                 if (shost)
2065                         spin_lock_irqsave(shost->host_lock, flags);
2066                 adpt_hba_reset(pHba);
2067                 if (shost)
2068                         spin_unlock_irqrestore(shost->host_lock, flags);
2069                 break;
2070         }
2071         case I2ORESCANCMD:
2072                 adpt_rescan(pHba);
2073                 break;
2074         default:
2075                 return -EINVAL;
2076         }
2077
2078         return error;
2079 }
2080
2081 static long adpt_unlocked_ioctl(struct file *file, uint cmd, ulong arg)
2082 {
2083         struct inode *inode;
2084         long ret;
2085
2086         inode = file_inode(file);
2087
2088         mutex_lock(&adpt_mutex);
2089         ret = adpt_ioctl(inode, file, cmd, arg);
2090         mutex_unlock(&adpt_mutex);
2091
2092         return ret;
2093 }
2094
2095 #ifdef CONFIG_COMPAT
2096 static long compat_adpt_ioctl(struct file *file,
2097                                 unsigned int cmd, unsigned long arg)
2098 {
2099         struct inode *inode;
2100         long ret;
2101
2102         inode = file_inode(file);
2103
2104         mutex_lock(&adpt_mutex);
2105
2106         switch(cmd) {
2107                 case DPT_SIGNATURE:
2108                 case I2OUSRCMD:
2109                 case DPT_CTRLINFO:
2110                 case DPT_SYSINFO:
2111                 case DPT_BLINKLED:
2112                 case I2ORESETCMD:
2113                 case I2ORESCANCMD:
2114                 case (DPT_TARGET_BUSY & 0xFFFF):
2115                 case DPT_TARGET_BUSY:
2116                         ret = adpt_ioctl(inode, file, cmd, arg);
2117                         break;
2118                 default:
2119                         ret =  -ENOIOCTLCMD;
2120         }
2121
2122         mutex_unlock(&adpt_mutex);
2123
2124         return ret;
2125 }
2126 #endif
2127
2128 static irqreturn_t adpt_isr(int irq, void *dev_id)
2129 {
2130         struct scsi_cmnd* cmd;
2131         adpt_hba* pHba = dev_id;
2132         u32 m;
2133         void __iomem *reply;
2134         u32 status=0;
2135         u32 context;
2136         ulong flags = 0;
2137         int handled = 0;
2138
2139         if (pHba == NULL){
2140                 printk(KERN_WARNING"adpt_isr: NULL dev_id\n");
2141                 return IRQ_NONE;
2142         }
2143         if(pHba->host)
2144                 spin_lock_irqsave(pHba->host->host_lock, flags);
2145
2146         while( readl(pHba->irq_mask) & I2O_INTERRUPT_PENDING_B) {
2147                 m = readl(pHba->reply_port);
2148                 if(m == EMPTY_QUEUE){
2149                         // Try twice then give up
2150                         rmb();
2151                         m = readl(pHba->reply_port);
2152                         if(m == EMPTY_QUEUE){
2153                                 // This really should not happen
2154                                 printk(KERN_ERR"dpti: Could not get reply frame\n");
2155                                 goto out;
2156                         }
2157                 }
2158                 if (pHba->reply_pool_pa <= m &&
2159                     m < pHba->reply_pool_pa +
2160                         (pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4)) {
2161                         reply = (u8 *)pHba->reply_pool +
2162                                                 (m - pHba->reply_pool_pa);
2163                 } else {
2164                         /* Ick, we should *never* be here */
2165                         printk(KERN_ERR "dpti: reply frame not from pool\n");
2166                         reply = (u8 *)bus_to_virt(m);
2167                 }
2168
2169                 if (readl(reply) & MSG_FAIL) {
2170                         u32 old_m = readl(reply+28);
2171                         void __iomem *msg;
2172                         u32 old_context;
2173                         PDEBUG("%s: Failed message\n",pHba->name);
2174                         if(old_m >= 0x100000){
2175                                 printk(KERN_ERR"%s: Bad preserved MFA (%x)- dropping frame\n",pHba->name,old_m);
2176                                 writel(m,pHba->reply_port);
2177                                 continue;
2178                         }
2179                         // Transaction context is 0 in failed reply frame
2180                         msg = pHba->msg_addr_virt + old_m;
2181                         old_context = readl(msg+12);
2182                         writel(old_context, reply+12);
2183                         adpt_send_nop(pHba, old_m);
2184                 }
2185                 context = readl(reply+8);
2186                 if(context & 0x40000000){ // IOCTL
2187                         void *p = adpt_ioctl_from_context(pHba, readl(reply+12));
2188                         if( p != NULL) {
2189                                 memcpy_fromio(p, reply, REPLY_FRAME_SIZE * 4);
2190                         }
2191                         // All IOCTLs will also be post wait
2192                 }
2193                 if(context & 0x80000000){ // Post wait message
2194                         status = readl(reply+16);
2195                         if(status  >> 24){
2196                                 status &=  0xffff; /* Get detail status */
2197                         } else {
2198                                 status = I2O_POST_WAIT_OK;
2199                         }
2200                         if(!(context & 0x40000000)) {
2201                                 cmd = adpt_cmd_from_context(pHba,
2202                                                         readl(reply+12));
2203                                 if(cmd != NULL) {
2204                                         printk(KERN_WARNING"%s: Apparent SCSI cmd in Post Wait Context - cmd=%p context=%x\n", pHba->name, cmd, context);
2205                                 }
2206                         }
2207                         adpt_i2o_post_wait_complete(context, status);
2208                 } else { // SCSI message
2209                         cmd = adpt_cmd_from_context (pHba, readl(reply+12));
2210                         if(cmd != NULL){
2211                                 scsi_dma_unmap(cmd);
2212                                 if(cmd->serial_number != 0) { // If not timedout
2213                                         adpt_i2o_to_scsi(reply, cmd);
2214                                 }
2215                         }
2216                 }
2217                 writel(m, pHba->reply_port);
2218                 wmb();
2219                 rmb();
2220         }
2221         handled = 1;
2222 out:    if(pHba->host)
2223                 spin_unlock_irqrestore(pHba->host->host_lock, flags);
2224         return IRQ_RETVAL(handled);
2225 }
2226
2227 static s32 adpt_scsi_to_i2o(adpt_hba* pHba, struct scsi_cmnd* cmd, struct adpt_device* d)
2228 {
2229         int i;
2230         u32 msg[MAX_MESSAGE_SIZE];
2231         u32* mptr;
2232         u32* lptr;
2233         u32 *lenptr;
2234         int direction;
2235         int scsidir;
2236         int nseg;
2237         u32 len;
2238         u32 reqlen;
2239         s32 rcode;
2240         dma_addr_t addr;
2241
2242         memset(msg, 0 , sizeof(msg));
2243         len = scsi_bufflen(cmd);
2244         direction = 0x00000000;
2245
2246         scsidir = 0x00000000;                   // DATA NO XFER
2247         if(len) {
2248                 /*
2249                  * Set SCBFlags to indicate if data is being transferred
2250                  * in or out, or no data transfer
2251                  * Note:  Do not have to verify index is less than 0 since
2252                  * cmd->cmnd[0] is an unsigned char
2253                  */
2254                 switch(cmd->sc_data_direction){
2255                 case DMA_FROM_DEVICE:
2256                         scsidir  =0x40000000;   // DATA IN  (iop<--dev)
2257                         break;
2258                 case DMA_TO_DEVICE:
2259                         direction=0x04000000;   // SGL OUT
2260                         scsidir  =0x80000000;   // DATA OUT (iop-->dev)
2261                         break;
2262                 case DMA_NONE:
2263                         break;
2264                 case DMA_BIDIRECTIONAL:
2265                         scsidir  =0x40000000;   // DATA IN  (iop<--dev)
2266                         // Assume In - and continue;
2267                         break;
2268                 default:
2269                         printk(KERN_WARNING"%s: scsi opcode 0x%x not supported.\n",
2270                              pHba->name, cmd->cmnd[0]);
2271                         cmd->result = (DID_OK <<16) | (INITIATOR_ERROR << 8);
2272                         cmd->scsi_done(cmd);
2273                         return  0;
2274                 }
2275         }
2276         // msg[0] is set later
2277         // I2O_CMD_SCSI_EXEC
2278         msg[1] = ((0xff<<24)|(HOST_TID<<12)|d->tid);
2279         msg[2] = 0;
2280         msg[3] = adpt_cmd_to_context(cmd);  /* Want SCSI control block back */
2281         // Our cards use the transaction context as the tag for queueing
2282         // Adaptec/DPT Private stuff
2283         msg[4] = I2O_CMD_SCSI_EXEC|(DPT_ORGANIZATION_ID<<16);
2284         msg[5] = d->tid;
2285         /* Direction, disconnect ok | sense data | simple queue , CDBLen */
2286         // I2O_SCB_FLAG_ENABLE_DISCONNECT |
2287         // I2O_SCB_FLAG_SIMPLE_QUEUE_TAG |
2288         // I2O_SCB_FLAG_SENSE_DATA_IN_MESSAGE;
2289         msg[6] = scsidir|0x20a00000|cmd->cmd_len;
2290
2291         mptr=msg+7;
2292
2293         // Write SCSI command into the message - always 16 byte block
2294         memset(mptr, 0,  16);
2295         memcpy(mptr, cmd->cmnd, cmd->cmd_len);
2296         mptr+=4;
2297         lenptr=mptr++;          /* Remember me - fill in when we know */
2298         if (dpt_dma64(pHba)) {
2299                 reqlen = 16;            // SINGLE SGE
2300                 *mptr++ = (0x7C<<24)+(2<<16)+0x02; /* Enable 64 bit */
2301                 *mptr++ = 1 << PAGE_SHIFT;
2302         } else {
2303                 reqlen = 14;            // SINGLE SGE
2304         }
2305         /* Now fill in the SGList and command */
2306
2307         nseg = scsi_dma_map(cmd);
2308         BUG_ON(nseg < 0);
2309         if (nseg) {
2310                 struct scatterlist *sg;
2311
2312                 len = 0;
2313                 scsi_for_each_sg(cmd, sg, nseg, i) {
2314                         lptr = mptr;
2315                         *mptr++ = direction|0x10000000|sg_dma_len(sg);
2316                         len+=sg_dma_len(sg);
2317                         addr = sg_dma_address(sg);
2318                         *mptr++ = dma_low(addr);
2319                         if (dpt_dma64(pHba))
2320                                 *mptr++ = dma_high(addr);
2321                         /* Make this an end of list */
2322                         if (i == nseg - 1)
2323                                 *lptr = direction|0xD0000000|sg_dma_len(sg);
2324                 }
2325                 reqlen = mptr - msg;
2326                 *lenptr = len;
2327
2328                 if(cmd->underflow && len != cmd->underflow){
2329                         printk(KERN_WARNING"Cmd len %08X Cmd underflow %08X\n",
2330                                 len, cmd->underflow);
2331                 }
2332         } else {
2333                 *lenptr = len = 0;
2334                 reqlen = 12;
2335         }
2336
2337         /* Stick the headers on */
2338         msg[0] = reqlen<<16 | ((reqlen > 12) ? SGL_OFFSET_12 : SGL_OFFSET_0);
2339
2340         // Send it on it's way
2341         rcode = adpt_i2o_post_this(pHba, msg, reqlen<<2);
2342         if (rcode == 0) {
2343                 return 0;
2344         }
2345         return rcode;
2346 }
2347
2348
2349 static s32 adpt_scsi_host_alloc(adpt_hba* pHba, struct scsi_host_template *sht)
2350 {
2351         struct Scsi_Host *host;
2352
2353         host = scsi_host_alloc(sht, sizeof(adpt_hba*));
2354         if (host == NULL) {
2355                 printk("%s: scsi_host_alloc returned NULL\n", pHba->name);
2356                 return -1;
2357         }
2358         host->hostdata[0] = (unsigned long)pHba;
2359         pHba->host = host;
2360
2361         host->irq = pHba->pDev->irq;
2362         /* no IO ports, so don't have to set host->io_port and
2363          * host->n_io_port
2364          */
2365         host->io_port = 0;
2366         host->n_io_port = 0;
2367                                 /* see comments in scsi_host.h */
2368         host->max_id = 16;
2369         host->max_lun = 256;
2370         host->max_channel = pHba->top_scsi_channel + 1;
2371         host->cmd_per_lun = 1;
2372         host->unique_id = (u32)sys_tbl_pa + pHba->unit;
2373         host->sg_tablesize = pHba->sg_tablesize;
2374         host->can_queue = pHba->post_fifo_size;
2375         host->use_cmd_list = 1;
2376
2377         return 0;
2378 }
2379
2380
2381 static s32 adpt_i2o_to_scsi(void __iomem *reply, struct scsi_cmnd* cmd)
2382 {
2383         adpt_hba* pHba;
2384         u32 hba_status;
2385         u32 dev_status;
2386         u32 reply_flags = readl(reply) & 0xff00; // Leave it shifted up 8 bits
2387         // I know this would look cleaner if I just read bytes
2388         // but the model I have been using for all the rest of the
2389         // io is in 4 byte words - so I keep that model
2390         u16 detailed_status = readl(reply+16) &0xffff;
2391         dev_status = (detailed_status & 0xff);
2392         hba_status = detailed_status >> 8;
2393
2394         // calculate resid for sg
2395         scsi_set_resid(cmd, scsi_bufflen(cmd) - readl(reply+20));
2396
2397         pHba = (adpt_hba*) cmd->device->host->hostdata[0];
2398
2399         cmd->sense_buffer[0] = '\0';  // initialize sense valid flag to false
2400
2401         if(!(reply_flags & MSG_FAIL)) {
2402                 switch(detailed_status & I2O_SCSI_DSC_MASK) {
2403                 case I2O_SCSI_DSC_SUCCESS:
2404                         cmd->result = (DID_OK << 16);
2405                         // handle underflow
2406                         if (readl(reply+20) < cmd->underflow) {
2407                                 cmd->result = (DID_ERROR <<16);
2408                                 printk(KERN_WARNING"%s: SCSI CMD underflow\n",pHba->name);
2409                         }
2410                         break;
2411                 case I2O_SCSI_DSC_REQUEST_ABORTED:
2412                         cmd->result = (DID_ABORT << 16);
2413                         break;
2414                 case I2O_SCSI_DSC_PATH_INVALID:
2415                 case I2O_SCSI_DSC_DEVICE_NOT_PRESENT:
2416                 case I2O_SCSI_DSC_SELECTION_TIMEOUT:
2417                 case I2O_SCSI_DSC_COMMAND_TIMEOUT:
2418                 case I2O_SCSI_DSC_NO_ADAPTER:
2419                 case I2O_SCSI_DSC_RESOURCE_UNAVAILABLE:
2420                         printk(KERN_WARNING"%s: SCSI Timeout-Device (%d,%d,%llu) hba status=0x%x, dev status=0x%x, cmd=0x%x\n",
2421                                 pHba->name, (u32)cmd->device->channel, (u32)cmd->device->id, cmd->device->lun, hba_status, dev_status, cmd->cmnd[0]);
2422                         cmd->result = (DID_TIME_OUT << 16);
2423                         break;
2424                 case I2O_SCSI_DSC_ADAPTER_BUSY:
2425                 case I2O_SCSI_DSC_BUS_BUSY:
2426                         cmd->result = (DID_BUS_BUSY << 16);
2427                         break;
2428                 case I2O_SCSI_DSC_SCSI_BUS_RESET:
2429                 case I2O_SCSI_DSC_BDR_MESSAGE_SENT:
2430                         cmd->result = (DID_RESET << 16);
2431                         break;
2432                 case I2O_SCSI_DSC_PARITY_ERROR_FAILURE:
2433                         printk(KERN_WARNING"%s: SCSI CMD parity error\n",pHba->name);
2434                         cmd->result = (DID_PARITY << 16);
2435                         break;
2436                 case I2O_SCSI_DSC_UNABLE_TO_ABORT:
2437                 case I2O_SCSI_DSC_COMPLETE_WITH_ERROR:
2438                 case I2O_SCSI_DSC_UNABLE_TO_TERMINATE:
2439                 case I2O_SCSI_DSC_MR_MESSAGE_RECEIVED:
2440                 case I2O_SCSI_DSC_AUTOSENSE_FAILED:
2441                 case I2O_SCSI_DSC_DATA_OVERRUN:
2442                 case I2O_SCSI_DSC_UNEXPECTED_BUS_FREE:
2443                 case I2O_SCSI_DSC_SEQUENCE_FAILURE:
2444                 case I2O_SCSI_DSC_REQUEST_LENGTH_ERROR:
2445                 case I2O_SCSI_DSC_PROVIDE_FAILURE:
2446                 case I2O_SCSI_DSC_REQUEST_TERMINATED:
2447                 case I2O_SCSI_DSC_IDE_MESSAGE_SENT:
2448                 case I2O_SCSI_DSC_UNACKNOWLEDGED_EVENT:
2449                 case I2O_SCSI_DSC_MESSAGE_RECEIVED:
2450                 case I2O_SCSI_DSC_INVALID_CDB:
2451                 case I2O_SCSI_DSC_LUN_INVALID:
2452                 case I2O_SCSI_DSC_SCSI_TID_INVALID:
2453                 case I2O_SCSI_DSC_FUNCTION_UNAVAILABLE:
2454                 case I2O_SCSI_DSC_NO_NEXUS:
2455                 case I2O_SCSI_DSC_CDB_RECEIVED:
2456                 case I2O_SCSI_DSC_LUN_ALREADY_ENABLED:
2457                 case I2O_SCSI_DSC_QUEUE_FROZEN:
2458                 case I2O_SCSI_DSC_REQUEST_INVALID:
2459                 default:
2460                         printk(KERN_WARNING"%s: SCSI error %0x-Device(%d,%d,%llu) hba_status=0x%x, dev_status=0x%x, cmd=0x%x\n",
2461                                 pHba->name, detailed_status & I2O_SCSI_DSC_MASK, (u32)cmd->device->channel, (u32)cmd->device->id, cmd->device->lun,
2462                                hba_status, dev_status, cmd->cmnd[0]);
2463                         cmd->result = (DID_ERROR << 16);
2464                         break;
2465                 }
2466
2467                 // copy over the request sense data if it was a check
2468                 // condition status
2469                 if (dev_status == SAM_STAT_CHECK_CONDITION) {
2470                         u32 len = min(SCSI_SENSE_BUFFERSIZE, 40);
2471                         // Copy over the sense data
2472                         memcpy_fromio(cmd->sense_buffer, (reply+28) , len);
2473                         if(cmd->sense_buffer[0] == 0x70 /* class 7 */ &&
2474                            cmd->sense_buffer[2] == DATA_PROTECT ){
2475                                 /* This is to handle an array failed */
2476                                 cmd->result = (DID_TIME_OUT << 16);
2477                                 printk(KERN_WARNING"%s: SCSI Data Protect-Device (%d,%d,%llu) hba_status=0x%x, dev_status=0x%x, cmd=0x%x\n",
2478                                         pHba->name, (u32)cmd->device->channel, (u32)cmd->device->id, cmd->device->lun,
2479                                         hba_status, dev_status, cmd->cmnd[0]);
2480
2481                         }
2482                 }
2483         } else {
2484                 /* In this condtion we could not talk to the tid
2485                  * the card rejected it.  We should signal a retry
2486                  * for a limitted number of retries.
2487                  */
2488                 cmd->result = (DID_TIME_OUT << 16);
2489                 printk(KERN_WARNING"%s: I2O MSG_FAIL - Device (%d,%d,%llu) tid=%d, cmd=0x%x\n",
2490                         pHba->name, (u32)cmd->device->channel, (u32)cmd->device->id, cmd->device->lun,
2491                         ((struct adpt_device*)(cmd->device->hostdata))->tid, cmd->cmnd[0]);
2492         }
2493
2494         cmd->result |= (dev_status);
2495
2496         if(cmd->scsi_done != NULL){
2497                 cmd->scsi_done(cmd);
2498         }
2499         return cmd->result;
2500 }
2501
2502
2503 static s32 adpt_rescan(adpt_hba* pHba)
2504 {
2505         s32 rcode;
2506         ulong flags = 0;
2507
2508         if(pHba->host)
2509                 spin_lock_irqsave(pHba->host->host_lock, flags);
2510         if ((rcode=adpt_i2o_lct_get(pHba)) < 0)
2511                 goto out;
2512         if ((rcode=adpt_i2o_reparse_lct(pHba)) < 0)
2513                 goto out;
2514         rcode = 0;
2515 out:    if(pHba->host)
2516                 spin_unlock_irqrestore(pHba->host->host_lock, flags);
2517         return rcode;
2518 }
2519
2520
2521 static s32 adpt_i2o_reparse_lct(adpt_hba* pHba)
2522 {
2523         int i;
2524         int max;
2525         int tid;
2526         struct i2o_device *d;
2527         i2o_lct *lct = pHba->lct;
2528         u8 bus_no = 0;
2529         s16 scsi_id;
2530         u64 scsi_lun;
2531         u32 buf[10]; // at least 8 u32's
2532         struct adpt_device* pDev = NULL;
2533         struct i2o_device* pI2o_dev = NULL;
2534
2535         if (lct == NULL) {
2536                 printk(KERN_ERR "%s: LCT is empty???\n",pHba->name);
2537                 return -1;
2538         }
2539
2540         max = lct->table_size;
2541         max -= 3;
2542         max /= 9;
2543
2544         // Mark each drive as unscanned
2545         for (d = pHba->devices; d; d = d->next) {
2546                 pDev =(struct adpt_device*) d->owner;
2547                 if(!pDev){
2548                         continue;
2549                 }
2550                 pDev->state |= DPTI_DEV_UNSCANNED;
2551         }
2552
2553         printk(KERN_INFO "%s: LCT has %d entries.\n", pHba->name,max);
2554
2555         for(i=0;i<max;i++) {
2556                 if( lct->lct_entry[i].user_tid != 0xfff){
2557                         continue;
2558                 }
2559
2560                 if( lct->lct_entry[i].class_id == I2O_CLASS_RANDOM_BLOCK_STORAGE ||
2561                     lct->lct_entry[i].class_id == I2O_CLASS_SCSI_PERIPHERAL ||
2562                     lct->lct_entry[i].class_id == I2O_CLASS_FIBRE_CHANNEL_PERIPHERAL ){
2563                         tid = lct->lct_entry[i].tid;
2564                         if(adpt_i2o_query_scalar(pHba, tid, 0x8000, -1, buf, 32)<0) {
2565                                 printk(KERN_ERR"%s: Could not query device\n",pHba->name);
2566                                 continue;
2567                         }
2568                         bus_no = buf[0]>>16;
2569                         if (bus_no >= MAX_CHANNEL) {    /* Something wrong skip it */
2570                                 printk(KERN_WARNING
2571                                         "%s: Channel number %d out of range\n",
2572                                         pHba->name, bus_no);
2573                                 continue;
2574                         }
2575
2576                         scsi_id = buf[1];
2577                         scsi_lun = scsilun_to_int((struct scsi_lun *)&buf[2]);
2578                         pDev = pHba->channel[bus_no].device[scsi_id];
2579                         /* da lun */
2580                         while(pDev) {
2581                                 if(pDev->scsi_lun == scsi_lun) {
2582                                         break;
2583                                 }
2584                                 pDev = pDev->next_lun;
2585                         }
2586                         if(!pDev ) { // Something new add it
2587                                 d = kmalloc(sizeof(struct i2o_device),
2588                                             GFP_ATOMIC);
2589                                 if(d==NULL)
2590                                 {
2591                                         printk(KERN_CRIT "Out of memory for I2O device data.\n");
2592                                         return -ENOMEM;
2593                                 }
2594
2595                                 d->controller = pHba;
2596                                 d->next = NULL;
2597
2598                                 memcpy(&d->lct_data, &lct->lct_entry[i], sizeof(i2o_lct_entry));
2599
2600                                 d->flags = 0;
2601                                 adpt_i2o_report_hba_unit(pHba, d);
2602                                 adpt_i2o_install_device(pHba, d);
2603
2604                                 pDev = pHba->channel[bus_no].device[scsi_id];
2605                                 if( pDev == NULL){
2606                                         pDev =
2607                                           kzalloc(sizeof(struct adpt_device),
2608                                                   GFP_ATOMIC);
2609                                         if(pDev == NULL) {
2610                                                 return -ENOMEM;
2611                                         }
2612                                         pHba->channel[bus_no].device[scsi_id] = pDev;
2613                                 } else {
2614                                         while (pDev->next_lun) {
2615                                                 pDev = pDev->next_lun;
2616                                         }
2617                                         pDev = pDev->next_lun =
2618                                           kzalloc(sizeof(struct adpt_device),
2619                                                   GFP_ATOMIC);
2620                                         if(pDev == NULL) {
2621                                                 return -ENOMEM;
2622                                         }
2623                                 }
2624                                 pDev->tid = d->lct_data.tid;
2625                                 pDev->scsi_channel = bus_no;
2626                                 pDev->scsi_id = scsi_id;
2627                                 pDev->scsi_lun = scsi_lun;
2628                                 pDev->pI2o_dev = d;
2629                                 d->owner = pDev;
2630                                 pDev->type = (buf[0])&0xff;
2631                                 pDev->flags = (buf[0]>>8)&0xff;
2632                                 // Too late, SCSI system has made up it's mind, but what the hey ...
2633                                 if(scsi_id > pHba->top_scsi_id){
2634                                         pHba->top_scsi_id = scsi_id;
2635                                 }
2636                                 if(scsi_lun > pHba->top_scsi_lun){
2637                                         pHba->top_scsi_lun = scsi_lun;
2638                                 }
2639                                 continue;
2640                         } // end of new i2o device
2641
2642                         // We found an old device - check it
2643                         while(pDev) {
2644                                 if(pDev->scsi_lun == scsi_lun) {
2645                                         if(!scsi_device_online(pDev->pScsi_dev)) {
2646                                                 printk(KERN_WARNING"%s: Setting device (%d,%d,%llu) back online\n",
2647                                                                 pHba->name,bus_no,scsi_id,scsi_lun);
2648                                                 if (pDev->pScsi_dev) {
2649                                                         scsi_device_set_state(pDev->pScsi_dev, SDEV_RUNNING);
2650                                                 }
2651                                         }
2652                                         d = pDev->pI2o_dev;
2653                                         if(d->lct_data.tid != tid) { // something changed
2654                                                 pDev->tid = tid;
2655                                                 memcpy(&d->lct_data, &lct->lct_entry[i], sizeof(i2o_lct_entry));
2656                                                 if (pDev->pScsi_dev) {
2657                                                         pDev->pScsi_dev->changed = TRUE;
2658                                                         pDev->pScsi_dev->removable = TRUE;
2659                                                 }
2660                                         }
2661                                         // Found it - mark it scanned
2662                                         pDev->state = DPTI_DEV_ONLINE;
2663                                         break;
2664                                 }
2665                                 pDev = pDev->next_lun;
2666                         }
2667                 }
2668         }
2669         for (pI2o_dev = pHba->devices; pI2o_dev; pI2o_dev = pI2o_dev->next) {
2670                 pDev =(struct adpt_device*) pI2o_dev->owner;
2671                 if(!pDev){
2672                         continue;
2673                 }
2674                 // Drive offline drives that previously existed but could not be found
2675                 // in the LCT table
2676                 if (pDev->state & DPTI_DEV_UNSCANNED){
2677                         pDev->state = DPTI_DEV_OFFLINE;
2678                         printk(KERN_WARNING"%s: Device (%d,%d,%llu) offline\n",pHba->name,pDev->scsi_channel,pDev->scsi_id,pDev->scsi_lun);
2679                         if (pDev->pScsi_dev) {
2680                                 scsi_device_set_state(pDev->pScsi_dev, SDEV_OFFLINE);
2681                         }
2682                 }
2683         }
2684         return 0;
2685 }
2686
2687 static void adpt_fail_posted_scbs(adpt_hba* pHba)
2688 {
2689         struct scsi_cmnd*       cmd = NULL;
2690         struct scsi_device*     d = NULL;
2691
2692         shost_for_each_device(d, pHba->host) {
2693                 unsigned long flags;
2694                 spin_lock_irqsave(&d->list_lock, flags);
2695                 list_for_each_entry(cmd, &d->cmd_list, list) {
2696                         if(cmd->serial_number == 0){
2697                                 continue;
2698                         }
2699                         cmd->result = (DID_OK << 16) | (QUEUE_FULL <<1);
2700                         cmd->scsi_done(cmd);
2701                 }
2702                 spin_unlock_irqrestore(&d->list_lock, flags);
2703         }
2704 }
2705
2706
2707 /*============================================================================
2708  *  Routines from i2o subsystem
2709  *============================================================================
2710  */
2711
2712
2713
2714 /*
2715  *      Bring an I2O controller into HOLD state. See the spec.
2716  */
2717 static int adpt_i2o_activate_hba(adpt_hba* pHba)
2718 {
2719         int rcode;
2720
2721         if(pHba->initialized ) {
2722                 if (adpt_i2o_status_get(pHba) < 0) {
2723                         if((rcode = adpt_i2o_reset_hba(pHba)) != 0){
2724                                 printk(KERN_WARNING"%s: Could NOT reset.\n", pHba->name);
2725                                 return rcode;
2726                         }
2727                         if (adpt_i2o_status_get(pHba) < 0) {
2728                                 printk(KERN_INFO "HBA not responding.\n");
2729                                 return -1;
2730                         }
2731                 }
2732
2733                 if(pHba->status_block->iop_state == ADAPTER_STATE_FAULTED) {
2734                         printk(KERN_CRIT "%s: hardware fault\n", pHba->name);
2735                         return -1;
2736                 }
2737
2738                 if (pHba->status_block->iop_state == ADAPTER_STATE_READY ||
2739                     pHba->status_block->iop_state == ADAPTER_STATE_OPERATIONAL ||
2740                     pHba->status_block->iop_state == ADAPTER_STATE_HOLD ||
2741                     pHba->status_block->iop_state == ADAPTER_STATE_FAILED) {
2742                         adpt_i2o_reset_hba(pHba);
2743                         if (adpt_i2o_status_get(pHba) < 0 || pHba->status_block->iop_state != ADAPTER_STATE_RESET) {
2744                                 printk(KERN_ERR "%s: Failed to initialize.\n", pHba->name);
2745                                 return -1;
2746                         }
2747                 }
2748         } else {
2749                 if((rcode = adpt_i2o_reset_hba(pHba)) != 0){
2750                         printk(KERN_WARNING"%s: Could NOT reset.\n", pHba->name);
2751                         return rcode;
2752                 }
2753
2754         }
2755
2756         if (adpt_i2o_init_outbound_q(pHba) < 0) {
2757                 return -1;
2758         }
2759
2760         /* In HOLD state */
2761
2762         if (adpt_i2o_hrt_get(pHba) < 0) {
2763                 return -1;
2764         }
2765
2766         return 0;
2767 }
2768
2769 /*
2770  *      Bring a controller online into OPERATIONAL state.
2771  */
2772
2773 static int adpt_i2o_online_hba(adpt_hba* pHba)
2774 {
2775         if (adpt_i2o_systab_send(pHba) < 0)
2776                 return -1;
2777         /* In READY state */
2778
2779         if (adpt_i2o_enable_hba(pHba) < 0)
2780                 return -1;
2781
2782         /* In OPERATIONAL state  */
2783         return 0;
2784 }
2785
2786 static s32 adpt_send_nop(adpt_hba*pHba,u32 m)
2787 {
2788         u32 __iomem *msg;
2789         ulong timeout = jiffies + 5*HZ;
2790
2791         while(m == EMPTY_QUEUE){
2792                 rmb();
2793                 m = readl(pHba->post_port);
2794                 if(m != EMPTY_QUEUE){
2795                         break;
2796                 }
2797                 if(time_after(jiffies,timeout)){
2798                         printk(KERN_ERR "%s: Timeout waiting for message frame!\n",pHba->name);
2799                         return 2;
2800                 }
2801                 schedule_timeout_uninterruptible(1);
2802         }
2803         msg = (u32 __iomem *)(pHba->msg_addr_virt + m);
2804         writel( THREE_WORD_MSG_SIZE | SGL_OFFSET_0,&msg[0]);
2805         writel( I2O_CMD_UTIL_NOP << 24 | HOST_TID << 12 | 0,&msg[1]);
2806         writel( 0,&msg[2]);
2807         wmb();
2808
2809         writel(m, pHba->post_port);
2810         wmb();
2811         return 0;
2812 }
2813
2814 static s32 adpt_i2o_init_outbound_q(adpt_hba* pHba)
2815 {
2816         u8 *status;
2817         dma_addr_t addr;
2818         u32 __iomem *msg = NULL;
2819         int i;
2820         ulong timeout = jiffies + TMOUT_INITOUTBOUND*HZ;
2821         u32 m;
2822
2823         do {
2824                 rmb();
2825                 m = readl(pHba->post_port);
2826                 if (m != EMPTY_QUEUE) {
2827                         break;
2828                 }
2829
2830                 if(time_after(jiffies,timeout)){
2831                         printk(KERN_WARNING"%s: Timeout waiting for message frame\n",pHba->name);
2832                         return -ETIMEDOUT;
2833                 }
2834                 schedule_timeout_uninterruptible(1);
2835         } while(m == EMPTY_QUEUE);
2836
2837         msg=(u32 __iomem *)(pHba->msg_addr_virt+m);
2838
2839         status = dma_alloc_coherent(&pHba->pDev->dev, 4, &addr, GFP_KERNEL);
2840         if (!status) {
2841                 adpt_send_nop(pHba, m);
2842                 printk(KERN_WARNING"%s: IOP reset failed - no free memory.\n",
2843                         pHba->name);
2844                 return -ENOMEM;
2845         }
2846         memset(status, 0, 4);
2847
2848         writel(EIGHT_WORD_MSG_SIZE| SGL_OFFSET_6, &msg[0]);
2849         writel(I2O_CMD_OUTBOUND_INIT<<24 | HOST_TID<<12 | ADAPTER_TID, &msg[1]);
2850         writel(0, &msg[2]);
2851         writel(0x0106, &msg[3]);        /* Transaction context */
2852         writel(4096, &msg[4]);          /* Host page frame size */
2853         writel((REPLY_FRAME_SIZE)<<16|0x80, &msg[5]);   /* Outbound msg frame size and Initcode */
2854         writel(0xD0000004, &msg[6]);            /* Simple SG LE, EOB */
2855         writel((u32)addr, &msg[7]);
2856
2857         writel(m, pHba->post_port);
2858         wmb();
2859
2860         // Wait for the reply status to come back
2861         do {
2862                 if (*status) {
2863                         if (*status != 0x01 /*I2O_EXEC_OUTBOUND_INIT_IN_PROGRESS*/) {
2864                                 break;
2865                         }
2866                 }
2867                 rmb();
2868                 if(time_after(jiffies,timeout)){
2869                         printk(KERN_WARNING"%s: Timeout Initializing\n",pHba->name);
2870                         /* We lose 4 bytes of "status" here, but we
2871                            cannot free these because controller may
2872                            awake and corrupt those bytes at any time */
2873                         /* dma_free_coherent(&pHba->pDev->dev, 4, status, addr); */
2874                         return -ETIMEDOUT;
2875                 }
2876                 schedule_timeout_uninterruptible(1);
2877         } while (1);
2878
2879         // If the command was successful, fill the fifo with our reply
2880         // message packets
2881         if(*status != 0x04 /*I2O_EXEC_OUTBOUND_INIT_COMPLETE*/) {
2882                 dma_free_coherent(&pHba->pDev->dev, 4, status, addr);
2883                 return -2;
2884         }
2885         dma_free_coherent(&pHba->pDev->dev, 4, status, addr);
2886
2887         if(pHba->reply_pool != NULL) {
2888                 dma_free_coherent(&pHba->pDev->dev,
2889                         pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4,
2890                         pHba->reply_pool, pHba->reply_pool_pa);
2891         }
2892
2893         pHba->reply_pool = dma_alloc_coherent(&pHba->pDev->dev,
2894                                 pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4,
2895                                 &pHba->reply_pool_pa, GFP_KERNEL);
2896         if (!pHba->reply_pool) {
2897                 printk(KERN_ERR "%s: Could not allocate reply pool\n", pHba->name);
2898                 return -ENOMEM;
2899         }
2900         memset(pHba->reply_pool, 0 , pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4);
2901
2902         for(i = 0; i < pHba->reply_fifo_size; i++) {
2903                 writel(pHba->reply_pool_pa + (i * REPLY_FRAME_SIZE * 4),
2904                         pHba->reply_port);
2905                 wmb();
2906         }
2907         adpt_i2o_status_get(pHba);
2908         return 0;
2909 }
2910
2911
2912 /*
2913  * I2O System Table.  Contains information about
2914  * all the IOPs in the system.  Used to inform IOPs
2915  * about each other's existence.
2916  *
2917  * sys_tbl_ver is the CurrentChangeIndicator that is
2918  * used by IOPs to track changes.
2919  */
2920
2921
2922
2923 static s32 adpt_i2o_status_get(adpt_hba* pHba)
2924 {
2925         ulong timeout;
2926         u32 m;
2927         u32 __iomem *msg;
2928         u8 *status_block=NULL;
2929
2930         if(pHba->status_block == NULL) {
2931                 pHba->status_block = dma_alloc_coherent(&pHba->pDev->dev,
2932                                         sizeof(i2o_status_block),
2933                                         &pHba->status_block_pa, GFP_KERNEL);
2934                 if(pHba->status_block == NULL) {
2935                         printk(KERN_ERR
2936                         "dpti%d: Get Status Block failed; Out of memory. \n",
2937                         pHba->unit);
2938                         return -ENOMEM;
2939                 }
2940         }
2941         memset(pHba->status_block, 0, sizeof(i2o_status_block));
2942         status_block = (u8*)(pHba->status_block);
2943         timeout = jiffies+TMOUT_GETSTATUS*HZ;
2944         do {
2945                 rmb();
2946                 m = readl(pHba->post_port);
2947                 if (m != EMPTY_QUEUE) {
2948                         break;
2949                 }
2950                 if(time_after(jiffies,timeout)){
2951                         printk(KERN_ERR "%s: Timeout waiting for message !\n",
2952                                         pHba->name);
2953                         return -ETIMEDOUT;
2954                 }
2955                 schedule_timeout_uninterruptible(1);
2956         } while(m==EMPTY_QUEUE);
2957
2958
2959         msg=(u32 __iomem *)(pHba->msg_addr_virt+m);
2960
2961         writel(NINE_WORD_MSG_SIZE|SGL_OFFSET_0, &msg[0]);
2962         writel(I2O_CMD_STATUS_GET<<24|HOST_TID<<12|ADAPTER_TID, &msg[1]);
2963         writel(1, &msg[2]);
2964         writel(0, &msg[3]);
2965         writel(0, &msg[4]);
2966         writel(0, &msg[5]);
2967         writel( dma_low(pHba->status_block_pa), &msg[6]);
2968         writel( dma_high(pHba->status_block_pa), &msg[7]);
2969         writel(sizeof(i2o_status_block), &msg[8]); // 88 bytes
2970
2971         //post message
2972         writel(m, pHba->post_port);
2973         wmb();
2974
2975         while(status_block[87]!=0xff){
2976                 if(time_after(jiffies,timeout)){
2977                         printk(KERN_ERR"dpti%d: Get status timeout.\n",
2978                                 pHba->unit);
2979                         return -ETIMEDOUT;
2980                 }
2981                 rmb();
2982                 schedule_timeout_uninterruptible(1);
2983         }
2984
2985         // Set up our number of outbound and inbound messages
2986         pHba->post_fifo_size = pHba->status_block->max_inbound_frames;
2987         if (pHba->post_fifo_size > MAX_TO_IOP_MESSAGES) {
2988                 pHba->post_fifo_size = MAX_TO_IOP_MESSAGES;
2989         }
2990
2991         pHba->reply_fifo_size = pHba->status_block->max_outbound_frames;
2992         if (pHba->reply_fifo_size > MAX_FROM_IOP_MESSAGES) {
2993                 pHba->reply_fifo_size = MAX_FROM_IOP_MESSAGES;
2994         }
2995
2996         // Calculate the Scatter Gather list size
2997         if (dpt_dma64(pHba)) {
2998                 pHba->sg_tablesize
2999                   = ((pHba->status_block->inbound_frame_size * 4
3000                   - 14 * sizeof(u32))
3001                   / (sizeof(struct sg_simple_element) + sizeof(u32)));
3002         } else {
3003                 pHba->sg_tablesize
3004                   = ((pHba->status_block->inbound_frame_size * 4
3005                   - 12 * sizeof(u32))
3006                   / sizeof(struct sg_simple_element));
3007         }
3008         if (pHba->sg_tablesize > SG_LIST_ELEMENTS) {
3009                 pHba->sg_tablesize = SG_LIST_ELEMENTS;
3010         }
3011
3012
3013 #ifdef DEBUG
3014         printk("dpti%d: State = ",pHba->unit);
3015         switch(pHba->status_block->iop_state) {
3016                 case 0x01:
3017                         printk("INIT\n");
3018                         break;
3019                 case 0x02:
3020                         printk("RESET\n");
3021                         break;
3022                 case 0x04:
3023                         printk("HOLD\n");
3024                         break;
3025                 case 0x05:
3026                         printk("READY\n");
3027                         break;
3028                 case 0x08:
3029                         printk("OPERATIONAL\n");
3030                         break;
3031                 case 0x10:
3032                         printk("FAILED\n");
3033                         break;
3034                 case 0x11:
3035                         printk("FAULTED\n");
3036                         break;
3037                 default:
3038                         printk("%x (unknown!!)\n",pHba->status_block->iop_state);
3039         }
3040 #endif
3041         return 0;
3042 }
3043
3044 /*
3045  * Get the IOP's Logical Configuration Table
3046  */
3047 static int adpt_i2o_lct_get(adpt_hba* pHba)
3048 {
3049         u32 msg[8];
3050         int ret;
3051         u32 buf[16];
3052
3053         if ((pHba->lct_size == 0) || (pHba->lct == NULL)){
3054                 pHba->lct_size = pHba->status_block->expected_lct_size;
3055         }
3056         do {
3057                 if (pHba->lct == NULL) {
3058                         pHba->lct = dma_alloc_coherent(&pHba->pDev->dev,
3059                                         pHba->lct_size, &pHba->lct_pa,
3060                                         GFP_ATOMIC);
3061                         if(pHba->lct == NULL) {
3062                                 printk(KERN_CRIT "%s: Lct Get failed. Out of memory.\n",
3063                                         pHba->name);
3064                                 return -ENOMEM;
3065                         }
3066                 }
3067                 memset(pHba->lct, 0, pHba->lct_size);
3068
3069                 msg[0] = EIGHT_WORD_MSG_SIZE|SGL_OFFSET_6;
3070                 msg[1] = I2O_CMD_LCT_NOTIFY<<24 | HOST_TID<<12 | ADAPTER_TID;
3071                 msg[2] = 0;
3072                 msg[3] = 0;
3073                 msg[4] = 0xFFFFFFFF;    /* All devices */
3074                 msg[5] = 0x00000000;    /* Report now */
3075                 msg[6] = 0xD0000000|pHba->lct_size;
3076                 msg[7] = (u32)pHba->lct_pa;
3077
3078                 if ((ret=adpt_i2o_post_wait(pHba, msg, sizeof(msg), 360))) {
3079                         printk(KERN_ERR "%s: LCT Get failed (status=%#10x.\n",
3080                                 pHba->name, ret);
3081                         printk(KERN_ERR"Adaptec: Error Reading Hardware.\n");
3082                         return ret;
3083                 }
3084
3085                 if ((pHba->lct->table_size << 2) > pHba->lct_size) {
3086                         pHba->lct_size = pHba->lct->table_size << 2;
3087                         dma_free_coherent(&pHba->pDev->dev, pHba->lct_size,
3088                                         pHba->lct, pHba->lct_pa);
3089                         pHba->lct = NULL;
3090                 }
3091         } while (pHba->lct == NULL);
3092
3093         PDEBUG("%s: Hardware resource table read.\n", pHba->name);
3094
3095
3096         // I2O_DPT_EXEC_IOP_BUFFERS_GROUP_NO;
3097         if(adpt_i2o_query_scalar(pHba, 0 , 0x8000, -1, buf, sizeof(buf))>=0) {
3098                 pHba->FwDebugBufferSize = buf[1];
3099                 pHba->FwDebugBuffer_P = ioremap(pHba->base_addr_phys + buf[0],
3100                                                 pHba->FwDebugBufferSize);
3101                 if (pHba->FwDebugBuffer_P) {
3102                         pHba->FwDebugFlags_P     = pHba->FwDebugBuffer_P +
3103                                                         FW_DEBUG_FLAGS_OFFSET;
3104                         pHba->FwDebugBLEDvalue_P = pHba->FwDebugBuffer_P +
3105                                                         FW_DEBUG_BLED_OFFSET;
3106                         pHba->FwDebugBLEDflag_P  = pHba->FwDebugBLEDvalue_P + 1;
3107                         pHba->FwDebugStrLength_P = pHba->FwDebugBuffer_P +
3108                                                 FW_DEBUG_STR_LENGTH_OFFSET;
3109                         pHba->FwDebugBuffer_P += buf[2];
3110                         pHba->FwDebugFlags = 0;
3111                 }
3112         }
3113
3114         return 0;
3115 }
3116
3117 static int adpt_i2o_build_sys_table(void)
3118 {
3119         adpt_hba* pHba = hba_chain;
3120         int count = 0;
3121
3122         if (sys_tbl)
3123                 dma_free_coherent(&pHba->pDev->dev, sys_tbl_len,
3124                                         sys_tbl, sys_tbl_pa);
3125
3126         sys_tbl_len = sizeof(struct i2o_sys_tbl) +      // Header + IOPs
3127                                 (hba_count) * sizeof(struct i2o_sys_tbl_entry);
3128
3129         sys_tbl = dma_alloc_coherent(&pHba->pDev->dev,
3130                                 sys_tbl_len, &sys_tbl_pa, GFP_KERNEL);
3131         if (!sys_tbl) {
3132                 printk(KERN_WARNING "SysTab Set failed. Out of memory.\n");
3133                 return -ENOMEM;
3134         }
3135         memset(sys_tbl, 0, sys_tbl_len);
3136
3137         sys_tbl->num_entries = hba_count;
3138         sys_tbl->version = I2OVERSION;
3139         sys_tbl->change_ind = sys_tbl_ind++;
3140
3141         for(pHba = hba_chain; pHba; pHba = pHba->next) {
3142                 u64 addr;
3143                 // Get updated Status Block so we have the latest information
3144                 if (adpt_i2o_status_get(pHba)) {
3145                         sys_tbl->num_entries--;
3146                         continue; // try next one
3147                 }
3148
3149                 sys_tbl->iops[count].org_id = pHba->status_block->org_id;
3150                 sys_tbl->iops[count].iop_id = pHba->unit + 2;
3151                 sys_tbl->iops[count].seg_num = 0;
3152                 sys_tbl->iops[count].i2o_version = pHba->status_block->i2o_version;
3153                 sys_tbl->iops[count].iop_state = pHba->status_block->iop_state;
3154                 sys_tbl->iops[count].msg_type = pHba->status_block->msg_type;
3155                 sys_tbl->iops[count].frame_size = pHba->status_block->inbound_frame_size;
3156                 sys_tbl->iops[count].last_changed = sys_tbl_ind - 1; // ??
3157                 sys_tbl->iops[count].iop_capabilities = pHba->status_block->iop_capabilities;
3158                 addr = pHba->base_addr_phys + 0x40;
3159                 sys_tbl->iops[count].inbound_low = dma_low(addr);
3160                 sys_tbl->iops[count].inbound_high = dma_high(addr);
3161
3162                 count++;
3163         }
3164
3165 #ifdef DEBUG
3166 {
3167         u32 *table = (u32*)sys_tbl;
3168         printk(KERN_DEBUG"sys_tbl_len=%d in 32bit words\n",(sys_tbl_len >>2));
3169         for(count = 0; count < (sys_tbl_len >>2); count++) {
3170                 printk(KERN_INFO "sys_tbl[%d] = %0#10x\n",
3171                         count, table[count]);
3172         }
3173 }
3174 #endif
3175
3176         return 0;
3177 }
3178
3179
3180 /*
3181  *       Dump the information block associated with a given unit (TID)
3182  */
3183
3184 static void adpt_i2o_report_hba_unit(adpt_hba* pHba, struct i2o_device *d)
3185 {
3186         char buf[64];
3187         int unit = d->lct_data.tid;
3188
3189         printk(KERN_INFO "TID %3.3d ", unit);
3190
3191         if(adpt_i2o_query_scalar(pHba, unit, 0xF100, 3, buf, 16)>=0)
3192         {
3193                 buf[16]=0;
3194                 printk(" Vendor: %-12.12s", buf);
3195         }
3196         if(adpt_i2o_query_scalar(pHba, unit, 0xF100, 4, buf, 16)>=0)
3197         {
3198                 buf[16]=0;
3199                 printk(" Device: %-12.12s", buf);
3200         }
3201         if(adpt_i2o_query_scalar(pHba, unit, 0xF100, 6, buf, 8)>=0)
3202         {
3203                 buf[8]=0;
3204                 printk(" Rev: %-12.12s\n", buf);
3205         }
3206 #ifdef DEBUG
3207          printk(KERN_INFO "\tClass: %.21s\n", adpt_i2o_get_class_name(d->lct_data.class_id));
3208          printk(KERN_INFO "\tSubclass: 0x%04X\n", d->lct_data.sub_class);
3209          printk(KERN_INFO "\tFlags: ");
3210
3211          if(d->lct_data.device_flags&(1<<0))
3212                   printk("C");       // ConfigDialog requested
3213          if(d->lct_data.device_flags&(1<<1))
3214                   printk("U");       // Multi-user capable
3215          if(!(d->lct_data.device_flags&(1<<4)))
3216                   printk("P");       // Peer service enabled!
3217          if(!(d->lct_data.device_flags&(1<<5)))
3218                   printk("M");       // Mgmt service enabled!
3219          printk("\n");
3220 #endif
3221 }
3222
3223 #ifdef DEBUG
3224 /*
3225  *      Do i2o class name lookup
3226  */
3227 static const char *adpt_i2o_get_class_name(int class)
3228 {
3229         int idx = 16;
3230         static char *i2o_class_name[] = {
3231                 "Executive",
3232                 "Device Driver Module",
3233                 "Block Device",
3234                 "Tape Device",
3235                 "LAN Interface",
3236                 "WAN Interface",
3237                 "Fibre Channel Port",
3238                 "Fibre Channel Device",
3239                 "SCSI Device",
3240                 "ATE Port",
3241                 "ATE Device",
3242                 "Floppy Controller",
3243                 "Floppy Device",
3244                 "Secondary Bus Port",
3245                 "Peer Transport Agent",
3246                 "Peer Transport",
3247                 "Unknown"
3248         };
3249
3250         switch(class&0xFFF) {
3251         case I2O_CLASS_EXECUTIVE:
3252                 idx = 0; break;
3253         case I2O_CLASS_DDM:
3254                 idx = 1; break;
3255         case I2O_CLASS_RANDOM_BLOCK_STORAGE:
3256                 idx = 2; break;
3257         case I2O_CLASS_SEQUENTIAL_STORAGE:
3258                 idx = 3; break;
3259         case I2O_CLASS_LAN:
3260                 idx = 4; break;
3261         case I2O_CLASS_WAN:
3262                 idx = 5; break;
3263         case I2O_CLASS_FIBRE_CHANNEL_PORT:
3264                 idx = 6; break;
3265         case I2O_CLASS_FIBRE_CHANNEL_PERIPHERAL:
3266                 idx = 7; break;
3267         case I2O_CLASS_SCSI_PERIPHERAL:
3268                 idx = 8; break;
3269         case I2O_CLASS_ATE_PORT:
3270                 idx = 9; break;
3271         case I2O_CLASS_ATE_PERIPHERAL:
3272                 idx = 10; break;
3273         case I2O_CLASS_FLOPPY_CONTROLLER:
3274                 idx = 11; break;
3275         case I2O_CLASS_FLOPPY_DEVICE:
3276                 idx = 12; break;
3277         case I2O_CLASS_BUS_ADAPTER_PORT:
3278                 idx = 13; break;
3279         case I2O_CLASS_PEER_TRANSPORT_AGENT:
3280                 idx = 14; break;
3281         case I2O_CLASS_PEER_TRANSPORT:
3282                 idx = 15; break;
3283         }
3284         return i2o_class_name[idx];
3285 }
3286 #endif
3287
3288
3289 static s32 adpt_i2o_hrt_get(adpt_hba* pHba)
3290 {
3291         u32 msg[6];
3292         int ret, size = sizeof(i2o_hrt);
3293
3294         do {
3295                 if (pHba->hrt == NULL) {
3296                         pHba->hrt = dma_alloc_coherent(&pHba->pDev->dev,
3297                                         size, &pHba->hrt_pa, GFP_KERNEL);
3298                         if (pHba->hrt == NULL) {
3299                                 printk(KERN_CRIT "%s: Hrt Get failed; Out of memory.\n", pHba->name);
3300                                 return -ENOMEM;
3301                         }
3302                 }
3303
3304                 msg[0]= SIX_WORD_MSG_SIZE| SGL_OFFSET_4;
3305                 msg[1]= I2O_CMD_HRT_GET<<24 | HOST_TID<<12 | ADAPTER_TID;
3306                 msg[2]= 0;
3307                 msg[3]= 0;
3308                 msg[4]= (0xD0000000 | size);    /* Simple transaction */
3309                 msg[5]= (u32)pHba->hrt_pa;      /* Dump it here */
3310
3311                 if ((ret = adpt_i2o_post_wait(pHba, msg, sizeof(msg),20))) {
3312                         printk(KERN_ERR "%s: Unable to get HRT (status=%#10x)\n", pHba->name, ret);
3313                         return ret;
3314                 }
3315
3316                 if (pHba->hrt->num_entries * pHba->hrt->entry_len << 2 > size) {
3317                         int newsize = pHba->hrt->num_entries * pHba->hrt->entry_len << 2;
3318                         dma_free_coherent(&pHba->pDev->dev, size,
3319                                 pHba->hrt, pHba->hrt_pa);
3320                         size = newsize;
3321                         pHba->hrt = NULL;
3322                 }
3323         } while(pHba->hrt == NULL);
3324         return 0;
3325 }
3326
3327 /*
3328  *       Query one scalar group value or a whole scalar group.
3329  */
3330 static int adpt_i2o_query_scalar(adpt_hba* pHba, int tid,
3331                         int group, int field, void *buf, int buflen)
3332 {
3333         u16 opblk[] = { 1, 0, I2O_PARAMS_FIELD_GET, group, 1, field };
3334         u8 *opblk_va;
3335         dma_addr_t opblk_pa;
3336         u8 *resblk_va;
3337         dma_addr_t resblk_pa;
3338
3339         int size;
3340
3341         /* 8 bytes for header */
3342         resblk_va = dma_alloc_coherent(&pHba->pDev->dev,
3343                         sizeof(u8) * (8 + buflen), &resblk_pa, GFP_KERNEL);
3344         if (resblk_va == NULL) {
3345                 printk(KERN_CRIT "%s: query scalar failed; Out of memory.\n", pHba->name);
3346                 return -ENOMEM;
3347         }
3348
3349         opblk_va = dma_alloc_coherent(&pHba->pDev->dev,
3350                         sizeof(opblk), &opblk_pa, GFP_KERNEL);
3351         if (opblk_va == NULL) {
3352                 dma_free_coherent(&pHba->pDev->dev, sizeof(u8) * (8+buflen),
3353                         resblk_va, resblk_pa);
3354                 printk(KERN_CRIT "%s: query operation failed; Out of memory.\n",
3355                         pHba->name);
3356                 return -ENOMEM;
3357         }
3358         if (field == -1)                /* whole group */
3359                         opblk[4] = -1;
3360
3361         memcpy(opblk_va, opblk, sizeof(opblk));
3362         size = adpt_i2o_issue_params(I2O_CMD_UTIL_PARAMS_GET, pHba, tid,
3363                 opblk_va, opblk_pa, sizeof(opblk),
3364                 resblk_va, resblk_pa, sizeof(u8)*(8+buflen));
3365         dma_free_coherent(&pHba->pDev->dev, sizeof(opblk), opblk_va, opblk_pa);
3366         if (size == -ETIME) {
3367                 dma_free_coherent(&pHba->pDev->dev, sizeof(u8) * (8+buflen),
3368                                                         resblk_va, resblk_pa);
3369                 printk(KERN_WARNING "%s: issue params failed; Timed out.\n", pHba->name);
3370                 return -ETIME;
3371         } else if (size == -EINTR) {
3372                 dma_free_coherent(&pHba->pDev->dev, sizeof(u8) * (8+buflen),
3373                                                         resblk_va, resblk_pa);
3374                 printk(KERN_WARNING "%s: issue params failed; Interrupted.\n", pHba->name);
3375                 return -EINTR;
3376         }
3377
3378         memcpy(buf, resblk_va+8, buflen);  /* cut off header */
3379
3380         dma_free_coherent(&pHba->pDev->dev, sizeof(u8) * (8+buflen),
3381                                                 resblk_va, resblk_pa);
3382         if (size < 0)
3383                 return size;
3384
3385         return buflen;
3386 }
3387
3388
3389 /*      Issue UTIL_PARAMS_GET or UTIL_PARAMS_SET
3390  *
3391  *      This function can be used for all UtilParamsGet/Set operations.
3392  *      The OperationBlock is given in opblk-buffer,
3393  *      and results are returned in resblk-buffer.
3394  *      Note that the minimum sized resblk is 8 bytes and contains
3395  *      ResultCount, ErrorInfoSize, BlockStatus and BlockSize.
3396  */
3397 static int adpt_i2o_issue_params(int cmd, adpt_hba* pHba, int tid,
3398                   void *opblk_va,  dma_addr_t opblk_pa, int oplen,
3399                 void *resblk_va, dma_addr_t resblk_pa, int reslen)
3400 {
3401         u32 msg[9];
3402         u32 *res = (u32 *)resblk_va;
3403         int wait_status;
3404
3405         msg[0] = NINE_WORD_MSG_SIZE | SGL_OFFSET_5;
3406         msg[1] = cmd << 24 | HOST_TID << 12 | tid;
3407         msg[2] = 0;
3408         msg[3] = 0;
3409         msg[4] = 0;
3410         msg[5] = 0x54000000 | oplen;    /* OperationBlock */
3411         msg[6] = (u32)opblk_pa;
3412         msg[7] = 0xD0000000 | reslen;   /* ResultBlock */
3413         msg[8] = (u32)resblk_pa;
3414
3415         if ((wait_status = adpt_i2o_post_wait(pHba, msg, sizeof(msg), 20))) {
3416                 printk("adpt_i2o_issue_params: post_wait failed (%p)\n", resblk_va);
3417                 return wait_status;     /* -DetailedStatus */
3418         }
3419
3420         if (res[1]&0x00FF0000) {        /* BlockStatus != SUCCESS */
3421                 printk(KERN_WARNING "%s: %s - Error:\n  ErrorInfoSize = 0x%02x, "
3422                         "BlockStatus = 0x%02x, BlockSize = 0x%04x\n",
3423                         pHba->name,
3424                         (cmd == I2O_CMD_UTIL_PARAMS_SET) ? "PARAMS_SET"
3425                                                          : "PARAMS_GET",
3426                         res[1]>>24, (res[1]>>16)&0xFF, res[1]&0xFFFF);
3427                 return -((res[1] >> 16) & 0xFF); /* -BlockStatus */
3428         }
3429
3430          return 4 + ((res[1] & 0x0000FFFF) << 2); /* bytes used in resblk */
3431 }
3432
3433
3434 static s32 adpt_i2o_quiesce_hba(adpt_hba* pHba)
3435 {
3436         u32 msg[4];
3437         int ret;
3438
3439         adpt_i2o_status_get(pHba);
3440
3441         /* SysQuiesce discarded if IOP not in READY or OPERATIONAL state */
3442
3443         if((pHba->status_block->iop_state != ADAPTER_STATE_READY) &&
3444            (pHba->status_block->iop_state != ADAPTER_STATE_OPERATIONAL)){
3445                 return 0;
3446         }
3447
3448         msg[0] = FOUR_WORD_MSG_SIZE|SGL_OFFSET_0;
3449         msg[1] = I2O_CMD_SYS_QUIESCE<<24|HOST_TID<<12|ADAPTER_TID;
3450         msg[2] = 0;
3451         msg[3] = 0;
3452
3453         if((ret = adpt_i2o_post_wait(pHba, msg, sizeof(msg), 240))) {
3454                 printk(KERN_INFO"dpti%d: Unable to quiesce (status=%#x).\n",
3455                                 pHba->unit, -ret);
3456         } else {
3457                 printk(KERN_INFO"dpti%d: Quiesced.\n",pHba->unit);
3458         }
3459
3460         adpt_i2o_status_get(pHba);
3461         return ret;
3462 }
3463
3464
3465 /*
3466  * Enable IOP. Allows the IOP to resume external operations.
3467  */
3468 static int adpt_i2o_enable_hba(adpt_hba* pHba)
3469 {
3470         u32 msg[4];
3471         int ret;
3472
3473         adpt_i2o_status_get(pHba);
3474         if(!pHba->status_block){
3475                 return -ENOMEM;
3476         }
3477         /* Enable only allowed on READY state */
3478         if(pHba->status_block->iop_state == ADAPTER_STATE_OPERATIONAL)
3479                 return 0;
3480
3481         if(pHba->status_block->iop_state != ADAPTER_STATE_READY)
3482                 return -EINVAL;
3483
3484         msg[0]=FOUR_WORD_MSG_SIZE|SGL_OFFSET_0;
3485         msg[1]=I2O_CMD_SYS_ENABLE<<24|HOST_TID<<12|ADAPTER_TID;
3486         msg[2]= 0;
3487         msg[3]= 0;
3488
3489         if ((ret = adpt_i2o_post_wait(pHba, msg, sizeof(msg), 240))) {
3490                 printk(KERN_WARNING"%s: Could not enable (status=%#10x).\n",
3491                         pHba->name, ret);
3492         } else {
3493                 PDEBUG("%s: Enabled.\n", pHba->name);
3494         }
3495
3496         adpt_i2o_status_get(pHba);
3497         return ret;
3498 }
3499
3500
3501 static int adpt_i2o_systab_send(adpt_hba* pHba)
3502 {
3503          u32 msg[12];
3504          int ret;
3505
3506         msg[0] = I2O_MESSAGE_SIZE(12) | SGL_OFFSET_6;
3507         msg[1] = I2O_CMD_SYS_TAB_SET<<24 | HOST_TID<<12 | ADAPTER_TID;
3508         msg[2] = 0;
3509         msg[3] = 0;
3510         msg[4] = (0<<16) | ((pHba->unit+2) << 12); /* Host 0 IOP ID (unit + 2) */
3511         msg[5] = 0;                                /* Segment 0 */
3512
3513         /*
3514          * Provide three SGL-elements:
3515          * System table (SysTab), Private memory space declaration and
3516          * Private i/o space declaration
3517          */
3518         msg[6] = 0x54000000 | sys_tbl_len;
3519         msg[7] = (u32)sys_tbl_pa;
3520         msg[8] = 0x54000000 | 0;
3521         msg[9] = 0;
3522         msg[10] = 0xD4000000 | 0;
3523         msg[11] = 0;
3524
3525         if ((ret=adpt_i2o_post_wait(pHba, msg, sizeof(msg), 120))) {
3526                 printk(KERN_INFO "%s: Unable to set SysTab (status=%#10x).\n",
3527                         pHba->name, ret);
3528         }
3529 #ifdef DEBUG
3530         else {
3531                 PINFO("%s: SysTab set.\n", pHba->name);
3532         }
3533 #endif
3534
3535         return ret;
3536 }
3537
3538
3539 /*============================================================================
3540  *
3541  *============================================================================
3542  */
3543
3544
3545 #ifdef UARTDELAY
3546
3547 static static void adpt_delay(int millisec)
3548 {
3549         int i;
3550         for (i = 0; i < millisec; i++) {
3551                 udelay(1000);   /* delay for one millisecond */
3552         }
3553 }
3554
3555 #endif
3556
3557 static struct scsi_host_template driver_template = {
3558         .module                 = THIS_MODULE,
3559         .name                   = "dpt_i2o",
3560         .proc_name              = "dpt_i2o",
3561         .show_info              = adpt_show_info,
3562         .info                   = adpt_info,
3563         .queuecommand           = adpt_queue,
3564         .eh_abort_handler       = adpt_abort,
3565         .eh_device_reset_handler = adpt_device_reset,
3566         .eh_bus_reset_handler   = adpt_bus_reset,
3567         .eh_host_reset_handler  = adpt_reset,
3568         .bios_param             = adpt_bios_param,
3569         .slave_configure        = adpt_slave_configure,
3570         .can_queue              = MAX_TO_IOP_MESSAGES,
3571         .this_id                = 7,
3572         .use_clustering         = ENABLE_CLUSTERING,
3573 };
3574
3575 static int __init adpt_init(void)
3576 {
3577         int             error;
3578         adpt_hba        *pHba, *next;
3579
3580         printk("Loading Adaptec I2O RAID: Version " DPT_I2O_VERSION "\n");
3581
3582         error = adpt_detect(&driver_template);
3583         if (error < 0)
3584                 return error;
3585         if (hba_chain == NULL)
3586                 return -ENODEV;
3587
3588         for (pHba = hba_chain; pHba; pHba = pHba->next) {
3589                 error = scsi_add_host(pHba->host, &pHba->pDev->dev);
3590                 if (error)
3591                         goto fail;
3592                 scsi_scan_host(pHba->host);
3593         }
3594         return 0;
3595 fail:
3596         for (pHba = hba_chain; pHba; pHba = next) {
3597                 next = pHba->next;
3598                 scsi_remove_host(pHba->host);
3599         }
3600         return error;
3601 }
3602
3603 static void __exit adpt_exit(void)
3604 {
3605         adpt_hba        *pHba, *next;
3606
3607         for (pHba = hba_chain; pHba; pHba = next) {
3608                 next = pHba->next;
3609                 adpt_release(pHba);
3610         }
3611 }
3612
3613 module_init(adpt_init);
3614 module_exit(adpt_exit);
3615
3616 MODULE_LICENSE("GPL");