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