drivers/scsi/eata

/* */
This source file includes following definitions.
eata_scsi_done
eata_fake_int_handler
eata_release
eata_int_handler
eata_send_command
eata_send_immediate
eata_queue
eata_abort
eata_reset
get_board_data
check_blink_state
get_conf_PIO
print_config
register_HBA
find_EISA
find_ISA
find_PCI
eata_detect
   1 /************************************************************
   2  *                                                          *
   3  *                  Linux EATA SCSI driver                  *
   4  *                                                          *
   5  *  based on the CAM document CAM/89-004 rev. 2.0c,         *
   6  *  DPT's driver kit, some internal documents and source,   *
   7  *  and several other Linux scsi drivers and kernel docs.   *
   8  *                                                          *
   9  *  The driver currently:                                   *
  10  *      -supports all ISA based EATA-DMA boards             *
  11  *      -supports all EISA based EATA-DMA boards            *
  12  *      -supports all PCI based EATA-DMA boards             *
  13  *      -supports multiple HBAs with & without IRQ sharing  *
  14  *      -supports all SCSI channels on multi channel boards *
  15  *      -needs identical IDs on all channels of a HBA       * 
  16  *      -can be loaded as module                            *
  17  *      -displays statistical and hardware information      *
  18  *       in /proc/scsi/eata_dma                             *
  19  *      -provides rudimentary latency measurement           * 
  20  *       possibilities via /proc/scsi/eata_dma/<hostnum>    *
  21  *                                                          *
  22  *  (c)1993,94,95 Michael Neuffer                           *
  23  *                neuffer@goofy.zdv.uni-mainz.de            *
  24  *                                                          *
  25  *  This program is free software; you can redistribute it  *
  26  *  and/or modify it under the terms of the GNU General     *
  27  *  Public License as published by the Free Software        *
  28  *  Foundation; either version 2 of the License, or         *
  29  *  (at your option) any later version.                     *
  30  *                                                          *
  31  *  This program is distributed in the hope that it will be *
  32  *  useful, but WITHOUT ANY WARRANTY; without even the      *
  33  *  implied warranty of MERCHANTABILITY or FITNESS FOR A    *
  34  *  PARTICULAR PURPOSE.  See the GNU General Public License *
  35  *  for more details.                                       *
  36  *                                                          *
  37  *  You should have received a copy of the GNU General      *
  38  *  Public License along with this kernel; if not, write to *
  39  *  the Free Software Foundation, Inc., 675 Mass Ave,       *
  40  *  Cambridge, MA 02139, USA.                               *
  41  *                                                          *
  42  * I have to thank DPT for their excellent support. I took  *
  43  * me almost a year and a stopover at their HQ, on my first *
  44  * trip to the USA, to get it, but since then they've been  *
  45  * very helpful and tried to give me all the infos and      *
  46  * support I need.                                          *
  47  *                                                          *
  48  * Thanks also to Greg Hosler who did a lot of testing and  *
  49  * found quite a number of bugs during the development.     *
  50  ************************************************************
  51  *  last change: 95/07/18                 OS: Linux 1.3.10  *
  52  ************************************************************/
  53 
  54 /* Look in eata_dma.h for configuration and revision information */
  55 
  56 #ifdef MODULE
  57 #include <linux/module.h>
  58 #include <linux/version.h>
  59 #endif
  60  
  61 #include <linux/kernel.h>
  62 #include <linux/sched.h>
  63 #include <linux/string.h>
  64 #include <linux/ioport.h>
  65 #include <linux/malloc.h>
  66 #include <linux/in.h>
  67 #include <linux/bios32.h>
  68 #include <linux/pci.h>
  69 #include <linux/proc_fs.h>
  70 #include <asm/byteorder.h>
  71 #include <asm/types.h>
  72 #include <asm/io.h>
  73 #include <asm/dma.h>
  74 #include "../block/blk.h"
  75 #include "scsi.h"
  76 #include "sd.h"
  77 #include "hosts.h"
  78 #include <linux/scsicam.h>
  79 #include "eata_dma.h"
  80 #include "eata_dma_proc.h" 
  81 
  82 
  83 static u32 ISAbases[] =
  84 {0x1F0, 0x170, 0x330, 0x230};
  85 static unchar EISAbases[] =
  86 {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
  87 static uint registered_HBAs = 0;
  88 static struct Scsi_Host *last_HBA = NULL;
  89 static struct Scsi_Host *first_HBA = NULL;
  90 static unchar reg_IRQ[] =
  91 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
  92 static unchar reg_IRQL[] =
  93 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
  94 static struct eata_sp *status = 0;   /* Statuspacket array   */
  95 static void *dma_scratch = 0;
  96 
  97 static u32 fake_int_base;
  98 static int fake_int_result;
  99 static int fake_int_happened;
 100 
 101 static ulong int_counter = 0;
 102 static ulong queue_counter = 0;
 103 
 104 void eata_scsi_done (Scsi_Cmnd * scmd)
     /*  */
 105 {
 106     scmd->request.dev = 0xfffe;
 107 
 108     if (scmd->request.sem != NULL)
 109         up(scmd->request.sem);
 110     
 111     return;
 112 }   
 113 
 114 void eata_fake_int_handler(s32 irq, struct pt_regs * regs)
     /*  */
 115 {
 116     fake_int_result = inb(fake_int_base + HA_RSTATUS);
 117     fake_int_happened = TRUE;
 118     DBG(DBG_INTR3, printk("eata_fake_int_handler called irq%d base %#x"
 119                           " res %#x\n", irq, fake_int_base, fake_int_result));
 120     return;
 121 }
 122 
 123 #include "eata_dma_proc.c"
 124 
 125 #ifdef MODULE
 126 int eata_release(struct Scsi_Host *sh)
     /*  */
 127 {
 128     uint i;
 129     if (sh->irq && reg_IRQ[sh->irq] == 1) free_irq(sh->irq);
 130     else reg_IRQ[sh->irq]--;
 131     
 132     scsi_init_free((void *)status, 512);
 133     scsi_init_free((void *)dma_scratch, 512);
 134     for (i = 0; i < sh->can_queue; i++){ /* Free all SG arrays */
 135         if(SD(sh)->ccb[i].sg_list != NULL)
 136             scsi_init_free((void *) SD(sh)->ccb[i].sg_list, 
 137                            sh->sg_tablesize * sizeof(struct eata_sg_list));
 138     }
 139     
 140     if (SD(sh)->channel == 0) {
 141         if (sh->dma_channel != 0xff) free_dma(sh->dma_channel);
 142         if (sh->io_port && sh->n_io_port)
 143             release_region(sh->io_port, sh->n_io_port);
 144     }
 145     return(TRUE);
 146 }
 147 #endif
 148 
 149 
 150 void eata_int_handler(int irq, struct pt_regs * regs)
     /*  */
 151 {
 152     uint i, result = 0;
 153     uint hba_stat, scsi_stat, eata_stat;
 154     Scsi_Cmnd *cmd;
 155     struct eata_ccb *cp;
 156     struct eata_sp *sp;
 157     uint base;
 158     ulong flags;
 159     uint x;
 160     struct Scsi_Host *sh;
 161 
 162     save_flags(flags);
 163     cli();
 164 
 165     for (x = 1, sh = first_HBA; x <= registered_HBAs; x++, sh = SD(sh)->prev) {
 166         if (sh->irq != irq)
 167             continue;
 168         if (!(inb((uint)sh->base + HA_RAUXSTAT) & HA_AIRQ))
 169             continue;
 170         
 171         int_counter++;
 172         
 173         sp=&SD(sh)->sp;
 174         
 175         cp = sp->ccb; /* Has been passed thru, no conversion needed */
 176         cmd = cp->cmd;
 177         base = (uint) cmd->host->base;
 178         
 179         hba_stat = sp->hba_stat;
 180         
 181         scsi_stat = (sp->scsi_stat >> 1) & 0x1f; 
 182        
 183         if (sp->EOC == FALSE) {
 184             eata_stat = inb(base + HA_RSTATUS);
 185             printk("eata_dma: int_handler, board: %x cmd %lx returned "
 186                    "unfinished.\nEATA: %x HBA: %x SCSI: %x spadr %lx spadrirq "
 187                    "%lx, irq%d\n", base, (long)cp, eata_stat, hba_stat, 
 188                    scsi_stat,(long)&status, (long)&status[irq], irq);
 189             DBG(DBG_DELAY, DEL2(800));
 190             restore_flags(flags);
 191             return;
 192         } 
 193         
 194         if (cp->status == LOCKED) {
 195             cp->status = FREE;
 196             eata_stat = inb(base + HA_RSTATUS);
 197             printk("eata_dma: int_handler, freeing locked queueslot\n");
 198             DBG(DBG_INTR && DBG_DELAY, DEL2(800));
 199             restore_flags(flags);
 200             return;
 201         }
 202         
 203         eata_stat = inb(base + HA_RSTATUS); 
 204         DBG(DBG_INTR, printk("IRQ %d received, base %#.4x, pid %ld, target: "
 205                              "%x, lun: %x, ea_s: %#.2x, hba_s: %#.2x \n", 
 206                              irq, base, cmd->pid, cmd->target, cmd->lun, 
 207                              eata_stat, hba_stat));
 208 
 209         switch (hba_stat) {
 210         case HA_NO_ERROR:       /* NO Error */
 211             if (scsi_stat == CONDITION_GOOD
 212                 && cmd->device->type == TYPE_DISK
 213                 && (HD(cmd)->t_state[cp->cp_channel][cp->cp_id] == RESET))
 214                 result = DID_BUS_BUSY << 16;        
 215             else if (scsi_stat == GOOD) {
 216                 HD(cmd)->t_state[cp->cp_channel][cp->cp_id] = OK;
 217                 if(HD(cmd)->do_latency == TRUE && cp->timestamp) {
 218                     uint time;
 219                     time = jiffies - cp->timestamp;
 220                     if((cp->rw_latency) == TRUE) { /* was WRITE */
 221                         if(HD(cmd)->writes_lat[cp->sizeindex][1] > time)
 222                             HD(cmd)->writes_lat[cp->sizeindex][1] = time;
 223                         if(HD(cmd)->writes_lat[cp->sizeindex][2] < time)
 224                             HD(cmd)->writes_lat[cp->sizeindex][2] = time;
 225                         HD(cmd)->writes_lat[cp->sizeindex][3] += time;
 226                         HD(cmd)->writes_lat[cp->sizeindex][0]++;
 227                     } else {
 228                         if(HD(cmd)->reads_lat[cp->sizeindex][1] > time)
 229                             HD(cmd)->reads_lat[cp->sizeindex][1] = time;
 230                         if(HD(cmd)->reads_lat[cp->sizeindex][2] < time)
 231                             HD(cmd)->reads_lat[cp->sizeindex][2] = time;
 232                         HD(cmd)->reads_lat[cp->sizeindex][3] += time;
 233                         HD(cmd)->reads_lat[cp->sizeindex][0]++;
 234                     }
 235                 }
 236             }
 237             else if (scsi_stat == CHECK_CONDITION
 238                      && cmd->device->type == TYPE_DISK
 239                      && (cmd->sense_buffer[2] & 0xf) == RECOVERED_ERROR)
 240                 result = DID_BUS_BUSY << 16;
 241             else
 242                 result = DID_OK << 16;
 243             HD(cmd)->t_timeout[cp->cp_channel][cp->cp_id] = OK;
 244             break;
 245         case HA_ERR_SEL_TO:     /* Selection Timeout */
 246             result = DID_BAD_TARGET << 16;  
 247             break;
 248         case HA_ERR_CMD_TO:     /* Command Timeout   */
 249             if (HD(cmd)->t_timeout[cp->cp_channel][cp->cp_id] > 1)
 250                 result = DID_ERROR << 16;
 251             else {
 252                 result = DID_TIME_OUT << 16;
 253                 HD(cmd)->t_timeout[cp->cp_channel][cp->cp_id]++;
 254             }
 255             break;
 256         case HA_ERR_RESET:              /* SCSI Bus Reset Received */
 257         case HA_INIT_POWERUP:           /* Initial Controller Power-up */
 258             if (cmd->device->type != TYPE_TAPE)
 259                 result = DID_BUS_BUSY << 16;
 260             else
 261                 result = DID_ERROR << 16;
 262             
 263             for (i = 0; i < MAXTARGET; i++)
 264                 HD(cmd)->t_state[cp->cp_channel][i] = RESET;
 265             break;
 266         case HA_UNX_BUSPHASE:       /* Unexpected Bus Phase */
 267         case HA_UNX_BUS_FREE:       /* Unexpected Bus Free */
 268         case HA_BUS_PARITY:         /* Bus Parity Error */
 269         case HA_SCSI_HUNG:          /* SCSI Hung */
 270         case HA_UNX_MSGRJCT:        /* Unexpected Message Reject */
 271         case HA_RESET_STUCK:        /* SCSI Bus Reset Stuck */
 272         case HA_RSENSE_FAIL:        /* Auto Request-Sense Failed */
 273         case HA_PARITY_ERR:         /* Controller Ram Parity */
 274         default:
 275             result = DID_ERROR << 16;
 276             break;
 277         }
 278         cmd->result = result | (scsi_stat << 1); 
 279         
 280 #if DBG_INTR2
 281         if (scsi_stat || result || hba_stat || eata_stat != 0x50 
 282             || cmd->scsi_done == NULL || cmd->device->id == 7) 
 283             printk("HBA: %d, channel %d, id: %d, lun %d, pid %ld:\n" 
 284                    "eata_stat %#x, hba_stat %#.2x, scsi_stat %#.2x, "
 285                    "sense_key: %#x, result: %#.8x\n", 
 286                    x, cmd->device->channel, cmd->device->id, cmd->device->lun,
 287                    cmd->pid, eata_stat, hba_stat, scsi_stat, 
 288                    cmd->sense_buffer[2] & 0xf, cmd->result); 
 289         DBG(DBG_INTR&&DBG_DELAY,DEL2(800));
 290 #endif
 291         
 292         cp->status = FREE;          /* now we can release the slot  */
 293         cmd->scsi_done(cmd);
 294     }
 295     restore_flags(flags);
 296     
 297     return;
 298 }
 299 
 300 inline int eata_send_command(u32 addr, u32 base, u8 command)
     /*  */
 301 {
 302     long loop = R_LIMIT;
 303     
 304     while (inb(base + HA_RAUXSTAT) & HA_ABUSY)
 305         if (--loop == 0)
 306             return(FALSE);
 307 
 308     /* And now the address in nice little byte chunks */
 309     outb( addr & 0x000000ff,        base + HA_WDMAADDR);
 310     outb((addr & 0x0000ff00) >> 8,  base + HA_WDMAADDR + 1);
 311     outb((addr & 0x00ff0000) >> 16, base + HA_WDMAADDR + 2);
 312     outb((addr & 0xff000000) >> 24, base + HA_WDMAADDR + 3);
 313     outb(command, base + HA_WCOMMAND);
 314     return(TRUE);
 315 }
 316 
 317 #if 0 
 318 inline int eata_send_immediate(u32 addr, u32 base, u8 cmnd, u8 cmnd2, u8 id, 
     /*  */
 319                                u8 lun)
 320 {
 321     if(addr){
 322         outb( addr & 0x000000ff,        base + HA_WDMAADDR);
 323         outb((addr & 0x0000ff00) >> 8,  base + HA_WDMAADDR + 1);
 324         outb((addr & 0x00ff0000) >> 16, base + HA_WDMAADDR + 2);
 325         outb((addr & 0xff000000) >> 24, base + HA_WDMAADDR + 3);
 326     } else {
 327         outb(id,  base + HA_WSUBCODE);
 328         outb(lun, base + HA_WSUBLUN);
 329     }
 330     
 331     outb(cmnd2, base + HA_WCOMMAND2);
 332     outb(cmnd,  base + HA_WCOMMAND);
 333     return(TRUE);
 334 }
 335 #endif
 336 
 337 int eata_queue(Scsi_Cmnd * cmd, void (* done) (Scsi_Cmnd *))
     /*  */
 338 {
 339     unsigned int i, x, y;
 340     u32 flags;
 341     hostdata *hd;
 342     struct Scsi_Host *sh;
 343     struct eata_ccb *cp;
 344     struct scatterlist *sl;
 345     
 346     save_flags(flags);
 347     cli();
 348     
 349     queue_counter++;
 350 
 351     hd = HD(cmd);
 352     sh = cmd->host;
 353     
 354     /* check for free slot */
 355     for (y = hd->last_ccb + 1, x = 0; x < sh->can_queue; x++, y++) { 
 356         if (y >= sh->can_queue)
 357             y = 0;
 358         if (hd->ccb[y].status == FREE)
 359             break;
 360     }
 361     
 362     hd->last_ccb = y;
 363     
 364     if (x == sh->can_queue) { 
 365         DBG(DBG_QUEUE, printk("can_queue %d, x %d, y %d\n", 
 366                               sh->can_queue, x, y));
 367         
 368         panic("eata_dma: run out of queue slots cmdno:%ld intrno: %ld\n", 
 369               queue_counter, int_counter);
 370     }
 371     
 372     cp = &hd->ccb[y];
 373     
 374     memset(cp, 0, sizeof(struct eata_ccb) - sizeof(struct eata_sg_list *));
 375     
 376     cp->status = USED;                  /* claim free slot */
 377     
 378     DBG(DBG_QUEUE, printk("eata_queue pid %ld, target: %x, lun: %x, y %d\n",
 379                           cmd->pid, cmd->target, cmd->lun, y));
 380     DBG(DBG_QUEUE && DBG_DELAY, DEL2(250));
 381     
 382     if(hd->do_latency == TRUE) {
 383         int x, z;
 384         short *sho;
 385         long *lon;
 386         x = 0;  /* just to keep GCC quiet */ 
 387         if (cmd->cmnd[0] == WRITE_6 || cmd->cmnd[0] == WRITE_10 || 
 388             cmd->cmnd[0] == WRITE_12 || cmd->cmnd[0] == READ_6 || 
 389             cmd->cmnd[0] == READ_10 || cmd->cmnd[0] == READ_12) {
 390             
 391             cp->timestamp = jiffies;    /* For latency measurements */
 392             switch(cmd->cmnd[0]) {
 393             case WRITE_6:   
 394             case READ_6:    
 395                 x = cmd->cmnd[4]/2; 
 396                 break;
 397             case WRITE_10:   
 398             case READ_10:
 399                 sho = (short *) &cmd->cmnd[7];
 400                 x = ntohs(*sho)/2;            
 401                 break;
 402             case WRITE_12:   
 403             case READ_12:
 404                 lon = (long *) &cmd->cmnd[6];
 405                 x = ntohl(*lon)/2;            
 406                 break;
 407             }
 408             for(z = 0; z <= 11, x > (1 << z); z++) 
 409                 /* nothing */;
 410             cp->sizeindex = z;
 411             if (cmd->cmnd[0] == WRITE_6 || cmd->cmnd[0] == WRITE_10 || 
 412                 cmd->cmnd[0] == WRITE_12){
 413                 cp->rw_latency = TRUE;
 414             }
 415         }
 416     }
 417     cmd->scsi_done = (void *)done;
 418     
 419     switch (cmd->cmnd[0]) {
 420     case CHANGE_DEFINITION: case COMPARE:         case COPY:
 421     case COPY_VERIFY:       case LOG_SELECT:      case MODE_SELECT:
 422     case MODE_SELECT_10:    case SEND_DIAGNOSTIC: case WRITE_BUFFER:
 423     case FORMAT_UNIT:       case REASSIGN_BLOCKS: case RESERVE:
 424     case SEARCH_EQUAL:      case SEARCH_HIGH:     case SEARCH_LOW:
 425     case WRITE_6:           case WRITE_10:        case WRITE_VERIFY:
 426     case UPDATE_BLOCK:      case WRITE_LONG:      case WRITE_SAME:      
 427     case SEARCH_HIGH_12:    case SEARCH_EQUAL_12: case SEARCH_LOW_12:
 428     case WRITE_12:          case WRITE_VERIFY_12: case SET_WINDOW: 
 429     case MEDIUM_SCAN:       case SEND_VOLUME_TAG:            
 430     case 0xea:      /* alternate number for WRITE LONG */
 431         cp->DataOut = TRUE;     /* Output mode */
 432         break;
 433     case TEST_UNIT_READY:
 434     default:
 435         cp->DataIn = TRUE;      /* Input mode  */
 436     }
 437 
 438     /* FIXME: This will will have to be changed once the midlevel driver 
 439      *        allows different HBA IDs on every channel.
 440      */
 441     if (cmd->target == sh->this_id) 
 442         cp->Interpret = TRUE;   /* Interpret command */
 443 
 444     if (cmd->use_sg) {
 445         cp->scatter = TRUE;     /* SG mode     */
 446         if (cp->sg_list == NULL) {
 447             cp->sg_list = kmalloc(SG_SIZE_BIG*sizeof(struct eata_sg_list),
 448                                   GFP_ATOMIC | GFP_DMA);
 449         }
 450         if (cp->sg_list == NULL)
 451             panic("eata_dma: Run out of DMA memory for SG lists !\n");
 452         cp->cp_dataDMA = htonl(virt_to_bus(cp->sg_list)); 
 453         
 454         cp->cp_datalen = htonl(cmd->use_sg * sizeof(struct eata_sg_list));
 455         sl=(struct scatterlist *)cmd->request_buffer;
 456         for(i = 0; i < cmd->use_sg; i++, sl++){
 457             cp->sg_list[i].data = htonl(virt_to_bus(sl->address));
 458             cp->sg_list[i].len = htonl((u32) sl->length);
 459         }
 460     } else {
 461         cp->scatter = FALSE;
 462         cp->cp_datalen = htonl(cmd->request_bufflen);
 463         cp->cp_dataDMA = htonl(virt_to_bus(cmd->request_buffer));
 464     }
 465     
 466     cp->Auto_Req_Sen = TRUE;
 467     cp->cp_reqDMA = htonl(virt_to_bus(cmd->sense_buffer));
 468     cp->reqlen = sizeof(cmd->sense_buffer);
 469     
 470     cp->cp_id = cmd->target;
 471     cp->cp_channel = cmd->channel;
 472     cp->cp_lun = cmd->lun;
 473     cp->cp_dispri = TRUE;
 474     cp->cp_identify = TRUE;
 475     memcpy(cp->cp_cdb, cmd->cmnd, cmd->cmd_len);
 476     
 477     cp->cp_statDMA = htonl(virt_to_bus(&(hd->sp)));
 478     
 479     cp->cp_viraddr = cp; /* This will be passed thru, so we don't need to convert it */
 480     cp->cmd = cmd;
 481     cmd->host_scribble = (char *)&hd->ccb[y];   
 482     
 483     if(eata_send_command((u32) cp, (u32) sh->base, EATA_CMD_DMA_SEND_CP) == FALSE) {
 484         cmd->result = DID_ERROR << 16;
 485         printk("eata_queue target %d, pid %ld, HBA busy, returning DID_ERROR,"
 486                " done.\n", cmd->target, cmd->pid);
 487 
 488         restore_flags(flags);
 489         done(cmd);
 490         return(0);
 491     }
 492     DBG(DBG_QUEUE,printk("Queued base %#.4x pid: %ld target: %x lun: %x "
 493                          "slot %d irq %d\n", (s32)sh->base, cmd->pid, 
 494                          cmd->target, cmd->lun, y, sh->irq));
 495     DBG(DBG_QUEUE && DBG_DELAY, DEL2(200));
 496     restore_flags(flags);
 497     return(0);
 498 }
 499 
 500 
 501 int eata_abort(Scsi_Cmnd * cmd)
     /*  */
 502 {
 503     ulong flags;
 504     ulong loop = R_LIMIT;
 505 
 506     save_flags(flags);
 507     cli();
 508 
 509     DBG(DBG_ABNORM, printk("eata_abort called pid: %ld target: %x lun: %x"
 510                            " reason %x\n", cmd->pid, cmd->target, cmd->lun, 
 511                            cmd->abort_reason));
 512     DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 513     
 514     
 515     while (inb((u32)(cmd->host->base) + HA_RAUXSTAT) & HA_ABUSY)
 516         if (--loop == 0) {
 517             printk("eata_dma: abort, timeout error.\n");
 518             restore_flags(flags);
 519             DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 520             return (SCSI_ABORT_ERROR);
 521         }
 522     if (CD(cmd)->status == USED) {
 523         DBG(DBG_ABNORM, printk("Returning: SCSI_ABORT_BUSY\n"));
 524         restore_flags(flags);
 525         return (SCSI_ABORT_BUSY);  /* SNOOZE */ 
 526     }
 527     if (CD(cmd)->status == FREE) {
 528         DBG(DBG_ABNORM, printk("Returning: SCSI_ABORT_NOT_RUNNING\n")); 
 529         restore_flags(flags);
 530         return (SCSI_ABORT_NOT_RUNNING);
 531     }
 532     if (CD(cmd)->status == RESET) {
 533         restore_flags(flags);
 534         printk("eata_dma: abort, command reset error.\n");
 535         DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 536         return (SCSI_ABORT_ERROR);
 537     }
 538     if (CD(cmd)->status == LOCKED) {
 539         restore_flags(flags);
 540         DBG(DBG_ABNORM, printk("eata_dma: abort, queue slot locked.\n"));
 541         DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 542         return (SCSI_ABORT_NOT_RUNNING);
 543     }
 544     restore_flags(flags);
 545     panic("eata_dma: abort: invalid slot status\n");
 546 }
 547 
 548 int eata_reset(Scsi_Cmnd * cmd)
     /*  */
 549 {
 550     ushort x, z; 
 551     ulong time, limit = 0;
 552     ulong loop = R_LIMIT;
 553     ulong flags;
 554     unchar success = FALSE;
 555     Scsi_Cmnd *sp; 
 556     
 557     save_flags(flags);
 558     cli();
 559     
 560     DBG(DBG_ABNORM, printk("eata_reset called pid:%ld target: %x lun: %x"
 561                            " reason %x\n", cmd->pid, cmd->target, cmd->lun, 
 562                            cmd->abort_reason));
 563         
 564     if (HD(cmd)->state == RESET) {
 565         printk("eata_reset: exit, already in reset.\n");
 566         restore_flags(flags);
 567         DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 568         return (SCSI_RESET_ERROR);
 569     }
 570     
 571     while (inb((u32)(cmd->host->base) + HA_RAUXSTAT) & HA_ABUSY)
 572         if (--loop == 0) {
 573             printk("eata_reset: exit, timeout error.\n");
 574             restore_flags(flags);
 575             DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 576             return (SCSI_RESET_ERROR);
 577         }
 578  
 579     for (x = 0; x < MAXCHANNEL; x++) {
 580         for (z = 0; z < MAXTARGET; z++) {
 581             HD(cmd)->t_state[x][z] = RESET;
 582             HD(cmd)->t_timeout[x][z] = NO_TIMEOUT;
 583         }
 584     }
 585 
 586     for (x = 0; x < cmd->host->can_queue; x++) {
 587         if (HD(cmd)->ccb[x].status == FREE)
 588             continue;
 589         
 590         if (HD(cmd)->ccb[x].status == LOCKED) {
 591             HD(cmd)->ccb[x].status = FREE;
 592             printk("eata_reset: locked slot %d forced free.\n", x);
 593             DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 594             continue;
 595         }
 596         sp = HD(cmd)->ccb[x].cmd;
 597         HD(cmd)->ccb[x].status = RESET;
 598         printk("eata_reset: slot %d in reset, pid %ld.\n", x, sp->pid);
 599         DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 600         
 601         if (sp == NULL)
 602             panic("eata_reset: slot %d, sp==NULL.\n", x);
 603         DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 604         
 605         if (sp == cmd)
 606             success = TRUE;
 607     }
 608     
 609     /* hard reset the HBA  */
 610     inb((u32) (cmd->host->base) + HA_RSTATUS);  /* This might cause trouble */
 611     eata_send_command(0, (u32) cmd->host->base, EATA_CMD_RESET);
 612     
 613     DBG(DBG_ABNORM, printk("eata_reset: board reset done, enabling interrupts.\n"));
 614     HD(cmd)->state = RESET;
 615     
 616     restore_flags(flags);
 617     
 618     time = jiffies;
 619     while (jiffies < (time + (3 * HZ)) || limit++ < 10000000)
 620         /* As time goes by... */;
 621     
 622     save_flags(flags);
 623     cli();
 624     
 625     DBG(DBG_ABNORM, printk("eata_reset: interrupts disabled, loops %ld.\n", 
 626                            limit));
 627     DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 628     
 629     for (x = 0; x < cmd->host->can_queue; x++) {
 630         
 631         /* Skip slots already set free by interrupt */
 632         if (HD(cmd)->ccb[x].status != RESET)
 633             continue;
 634         
 635         sp = HD(cmd)->ccb[x].cmd;
 636         sp->result = DID_RESET << 16;
 637         
 638         /* This mailbox is still waiting for its interrupt */
 639         HD(cmd)->ccb[x].status = LOCKED;
 640         
 641         printk("eata_reset: slot %d locked, DID_RESET, pid %ld done.\n",
 642                x, sp->pid);
 643         DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 644         restore_flags(flags);
 645         sp->scsi_done(sp);
 646         cli();
 647     }
 648     
 649     HD(cmd)->state = FALSE;
 650     restore_flags(flags);
 651     
 652     if (success) {
 653         DBG(DBG_ABNORM, printk("eata_reset: exit, success.\n"));
 654         DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 655         return (SCSI_RESET_SUCCESS);
 656     } else {
 657         DBG(DBG_ABNORM, printk("eata_reset: exit, wakeup.\n"));
 658         DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 659         return (SCSI_RESET_PUNT);
 660     }
 661 }
 662 
 663 char * get_board_data(u32 base, u32 irq, u32 id)
     /*  */
 664 {
 665     struct eata_ccb *cp;
 666     struct eata_sp  *sp;
 667     static char *buff;
 668     ulong i;
 669     ulong limit = 0;
 670 
 671     cp = (struct eata_ccb *) scsi_init_malloc(sizeof(struct eata_ccb),
 672                                               GFP_ATOMIC | GFP_DMA);
 673     sp = (struct eata_sp *) scsi_init_malloc(sizeof(struct eata_sp), 
 674                                              GFP_ATOMIC | GFP_DMA);
 675 
 676     buff = dma_scratch;
 677  
 678     memset(cp, 0, sizeof(struct eata_ccb));
 679     memset(sp, 0, sizeof(struct eata_sp));
 680     memset(buff, 0, 256);
 681 
 682     cp->DataIn = TRUE;     
 683     cp->Interpret = TRUE;   /* Interpret command */
 684     cp->cp_dispri = TRUE;
 685     cp->cp_identify = TRUE;
 686  
 687     cp->cp_datalen = htonl(56);  
 688     cp->cp_dataDMA = htonl(virt_to_bus(buff));
 689     cp->cp_statDMA = htonl(virt_to_bus(sp));
 690     cp->cp_viraddr = cp;
 691     
 692     cp->cp_id = id;
 693     cp->cp_lun = 0;
 694 
 695     cp->cp_cdb[0] = INQUIRY;
 696     cp->cp_cdb[1] = 0;
 697     cp->cp_cdb[2] = 0;
 698     cp->cp_cdb[3] = 0;
 699     cp->cp_cdb[4] = 56;
 700     cp->cp_cdb[5] = 0;
 701 
 702     fake_int_base = base;
 703     fake_int_result = FALSE;
 704     fake_int_happened = FALSE;
 705 
 706     eata_send_command((u32) cp, (u32) base, EATA_CMD_DMA_SEND_CP);
 707     
 708     i = jiffies + (3 * HZ);
 709     while (fake_int_happened == FALSE && jiffies <= i) 
 710         barrier();
 711     
 712     DBG(DBG_INTR3, printk("fake_int_result: %#x hbastat %#x scsistat %#x,"
 713                           " buff %p sp %p\n",
 714                           fake_int_result, (u32) (sp->hba_stat /*& 0x7f*/), 
 715                           (u32) sp->scsi_stat, buff, sp));
 716 
 717     scsi_init_free((void *)cp, sizeof(struct eata_ccb));
 718     scsi_init_free((void *)sp, sizeof(struct eata_sp));
 719     
 720     if ((fake_int_result & HA_SERROR) || jiffies > i){
 721         /* hard reset the HBA  */
 722         inb((u32) (base) + HA_RSTATUS);
 723         eata_send_command(0, base, EATA_CMD_RESET);
 724         i = jiffies;
 725         while (jiffies < (i + (3 * HZ)) && limit++ < 10000000) 
 726             barrier();
 727         return (NULL);
 728     } else
 729         return (buff);
 730 }
 731     
 732 int check_blink_state(long base)
     /*  */
 733 {
 734     ushort loops = 10;
 735     u32 blinkindicator;
 736     u32 state = 0x12345678;
 737     u32 oldstate = 0;
 738 
 739     blinkindicator = htonl(0x54504442);
 740     while ((loops--) && (state != oldstate)) {
 741         oldstate = state;
 742         state = inl((uint) base + 1);
 743     }
 744 
 745     DBG(DBG_BLINK, printk("Did Blink check. Status: %d\n",
 746               (state == oldstate) && (state == blinkindicator)));
 747 
 748     if ((state == oldstate) && (state == blinkindicator))
 749         return(TRUE);
 750     else
 751         return (FALSE);
 752 }
 753 
 754 int get_conf_PIO(u32 base, struct get_conf *buf)
     /*  */
 755 {
 756     ulong loop = R_LIMIT;
 757     u16 *p;
 758 
 759     if(check_region(base, 9)) 
 760         return (FALSE);
 761      
 762     memset(buf, 0, sizeof(struct get_conf));
 763 
 764     while (inb(base + HA_RSTATUS) & HA_SBUSY)
 765         if (--loop == 0) 
 766             return (FALSE);
 767        
 768     DBG(DBG_PIO && DBG_PROBE,
 769         printk("Issuing PIO READ CONFIG to HBA at %#x\n", base));
 770     eata_send_command(0, base, EATA_CMD_PIO_READ_CONFIG);
 771 
 772     loop = R_LIMIT;
 773     for (p = (u16 *) buf; 
 774          (long)p <= ((long)buf + (sizeof(struct get_conf) / 2)); p++) {
 775         while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
 776             if (--loop == 0)
 777                 return (FALSE);
 778 
 779         loop = R_LIMIT;
 780         *p = inw(base + HA_RDATA);
 781     }
 782 
 783     if (!(inb(base + HA_RSTATUS) & HA_SERROR)) {            /* Error ? */
 784         if (htonl(EATA_SIGNATURE) == buf->signature) {
 785             DBG(DBG_PIO&&DBG_PROBE, printk("EATA Controller found at %x "
 786                                            "EATA Level: %x\n", (uint) base, 
 787                                            (uint) (buf->version)));
 788             
 789             while (inb(base + HA_RSTATUS) & HA_SDRQ) 
 790                 inw(base + HA_RDATA);
 791             return (TRUE);
 792         } 
 793     } else {
 794         DBG(DBG_PROBE, printk("eata_dma: get_conf_PIO, error during transfer "
 795                   "for HBA at %lx\n", (long)base));
 796     }
 797     return (FALSE);
 798 }
 799 
 800 void print_config(struct get_conf *gc)
     /*  */
 801 {
 802     printk("Please check values: (read config data)\n");
 803     printk("LEN: %d ver:%d OCS:%d TAR:%d TRNXFR:%d MORES:%d DMAS:%d\n",
 804            (u32) ntohl(gc->len), gc->version,
 805            gc->OCS_enabled, gc->TAR_support, gc->TRNXFR, gc->MORE_support,
 806            gc->DMA_support);
 807     printk("DMAV:%d HAAV:%d SCSIID0:%d ID1:%d ID2:%d QUEUE:%d SG:%d SEC:%d\n",
 808            gc->DMA_valid, gc->HAA_valid, gc->scsi_id[3], gc->scsi_id[2],
 809            gc->scsi_id[1], ntohs(gc->queuesiz), ntohs(gc->SGsiz), gc->SECOND);
 810     printk("IRQ:%d IRQT:%d DMAC:%d FORCADR:%d SG_64K:%d SG_UAE:%d MID:%d "
 811            "MCH:%d MLUN:%d\n",
 812            gc->IRQ, gc->IRQ_TR, (8 - gc->DMA_channel) & 7, gc->FORCADR, 
 813            gc->SG_64K, gc->SG_UAE, gc->MAX_ID, gc->MAX_CHAN, gc->MAX_LUN); 
 814     printk("RIDQ:%d PCI:%d EISA:%d\n",
 815            gc->ID_qest, gc->is_PCI, gc->is_EISA);
 816     DBG(DPT_DEBUG, DELAY(14));
 817 }
 818 
 819 short register_HBA(u32 base, struct get_conf *gc, Scsi_Host_Template * tpnt, 
     /*  */
 820                    u8 bustype)
 821 {
 822     ulong size = 0;
 823     unchar dma_channel = 0;
 824     char *buff = 0;
 825     unchar bugs = 0;
 826     struct Scsi_Host *sh;
 827     hostdata *hd;
 828     int x;
 829     
 830     
 831     DBG(DBG_REGISTER, print_config(gc));
 832 
 833     if (gc->DMA_support == FALSE) {
 834         printk("The EATA HBA at %#.4x does not support DMA.\n" 
 835                "Please use the EATA-PIO driver.\n", base);
 836         return (FALSE);
 837     }
 838 
 839     if(gc->HAA_valid == FALSE || ntohl(gc->len) < 0x22) 
 840         gc->MAX_CHAN = 0;
 841     
 842     if (reg_IRQ[gc->IRQ] == FALSE) {    /* Interrupt already registered ? */
 843         if (!request_irq(gc->IRQ, (void *) eata_fake_int_handler, SA_INTERRUPT,
 844                          "eata_dma")){
 845             reg_IRQ[gc->IRQ]++;
 846             if (!gc->IRQ_TR)
 847                 reg_IRQL[gc->IRQ] = TRUE;   /* IRQ is edge triggered */
 848         } else {
 849             printk("Couldn't allocate IRQ %d, Sorry.", gc->IRQ);
 850             return (FALSE);
 851         }
 852     } else {            /* More than one HBA on this IRQ */
 853         if (reg_IRQL[gc->IRQ] == TRUE) {
 854             printk("Can't support more than one HBA on this IRQ,\n"
 855                    "  if the IRQ is edge triggered. Sorry.\n");
 856             return (FALSE);
 857         } else
 858             reg_IRQ[gc->IRQ]++;
 859     }
 860     
 861     /* if gc->DMA_valid it must be an ISA HBA and we have to register it */
 862     dma_channel = 0xff;
 863     if (gc->DMA_valid) {
 864         if (request_dma(dma_channel = (8 - gc->DMA_channel) & 7, "eata_dma")) {
 865             printk("Unable to allocate DMA channel %d for ISA HBA at %#.4x.\n",
 866                    dma_channel, base);
 867             reg_IRQ[gc->IRQ]--;
 868             if (reg_IRQ[gc->IRQ] == 0)
 869                 free_irq(gc->IRQ);
 870             if (gc->IRQ_TR == FALSE)
 871                 reg_IRQL[gc->IRQ] = FALSE; 
 872             return (FALSE);
 873         }
 874     }
 875  
 876 #if !(NEWSTUFF)
 877     if (bustype != IS_EISA && bustype != IS_ISA)
 878 #endif
 879         buff = get_board_data(base, gc->IRQ, gc->scsi_id[3]);
 880 
 881     if (buff == NULL) {
 882 #if !(NEWSTUFF)
 883         if (bustype == IS_EISA || bustype == IS_ISA) {
 884             bugs = bugs || BROKEN_INQUIRY;
 885         } else {
 886 #endif
 887             if (gc->DMA_support == FALSE)
 888                 printk("HBA at %#.4x doesn't support DMA. Sorry\n", base);
 889             else
 890                 printk("HBA at %#.4x does not react on INQUIRY. Sorry.\n", 
 891                        base);
 892             if (gc->DMA_valid) 
 893                 free_dma(dma_channel);
 894             reg_IRQ[gc->IRQ]--;
 895             if (reg_IRQ[gc->IRQ] == 0)
 896                 free_irq(gc->IRQ);
 897             if (gc->IRQ_TR == FALSE)
 898                 reg_IRQL[gc->IRQ] = FALSE; 
 899             return (FALSE);
 900 #if !(NEWSTUFF)
 901         }
 902 #endif
 903     }
 904     
 905     if (gc->DMA_support == FALSE && buff != NULL)  
 906         printk("HBA %.12sat %#.4x doesn't set the DMA_support flag correctly.\n",
 907                &buff[16], base);
 908     
 909     request_region(base, 9, "eata_dma"); /* We already checked the 
 910                                           * availability, so this
 911                                           * should not fail.
 912                                           */
 913     
 914     if(ntohs(gc->queuesiz) == 0) {
 915         gc->queuesiz = ntohs(64);
 916         printk("Warning: Queue size has to be corrected. Assuming 64 queueslots\n"
 917                "         This might be a PM2012B with a defective Firmware\n");
 918     }
 919 
 920     size = sizeof(hostdata) + ((sizeof(struct eata_ccb) + sizeof(long)) 
 921                                * ntohs(gc->queuesiz));
 922 
 923     DBG(DBG_REGISTER, printk("scsi_register size: %ld\n", size));
 924     
 925     sh = scsi_register(tpnt, size);
 926     
 927     if(sh == NULL) {
 928         if (gc->DMA_valid) 
 929             free_dma(dma_channel);
 930         
 931         reg_IRQ[gc->IRQ]--;
 932         if (reg_IRQ[gc->IRQ] == 0)
 933             free_irq(gc->IRQ);
 934         if (gc->IRQ_TR == FALSE)
 935             reg_IRQL[gc->IRQ] = FALSE; 
 936         return (FALSE);
 937     }
 938     
 939     hd = SD(sh);                   
 940     
 941     memset(hd->ccb, 0, sizeof(struct eata_ccb) * ntohs(gc->queuesiz));
 942     memset(hd->reads, 0, sizeof(u32) * 26); 
 943 
 944     hd->broken_INQUIRY = (bugs & BROKEN_INQUIRY);
 945 
 946     if(hd->broken_INQUIRY == TRUE) {
 947         strcpy(SD(sh)->vendor, "DPT");
 948         strcpy(SD(sh)->name, "??????????");
 949         strcpy(SD(sh)->revision, "???.?");
 950     } else {    
 951         strncpy(SD(sh)->vendor, &buff[8], 8);
 952         SD(sh)->vendor[8] = 0;
 953         strncpy(SD(sh)->name, &buff[16], 17);
 954         SD(sh)->name[17] = 0;
 955         SD(sh)->revision[0] = buff[32];
 956         SD(sh)->revision[1] = buff[33];
 957         SD(sh)->revision[2] = buff[34];
 958         SD(sh)->revision[3] = '.';
 959         SD(sh)->revision[4] = buff[35];
 960         SD(sh)->revision[5] = 0;
 961     }
 962 
 963     switch (ntohl(gc->len)) {
 964     case 0x1c:
 965         SD(sh)->EATA_revision = 'a';
 966         break;
 967     case 0x1e:
 968         SD(sh)->EATA_revision = 'b';
 969         break;
 970     case 0x22:
 971         SD(sh)->EATA_revision = 'c';
 972         break;
 973     case 0x24:
 974         SD(sh)->EATA_revision = 'z';            
 975     default:
 976         SD(sh)->EATA_revision = '?';
 977     }
 978 
 979     if(ntohl(gc->len) >= 0x22) {
 980         if (gc->is_PCI == TRUE)
 981             hd->bustype = IS_PCI;
 982         else if (gc->is_EISA == TRUE)
 983             hd->bustype = IS_EISA;
 984         else
 985             hd->bustype = IS_ISA;
 986     } else if(hd->broken_INQUIRY == FALSE) {
 987         if (buff[21] == '4')
 988             hd->bustype = IS_PCI;
 989         else if (buff[21] == '2')
 990             hd->bustype = IS_EISA;
 991         else
 992             hd->bustype = IS_ISA;
 993     } else 
 994         hd->bustype = bustype;
 995     
 996     if(ntohl(gc->len) >= 0x22) {
 997         sh->max_id = gc->MAX_ID + 1;
 998         sh->max_lun = gc->MAX_LUN + 1;
 999     } else {
1000         sh->max_id = 8;
1001         sh->max_lun = 8;
1002     }
1003 
1004     hd->channel = gc->MAX_CHAN;     
1005     sh->max_channel = gc->MAX_CHAN; 
1006     sh->base = (char *) base;
1007     sh->io_port = (u16) base;
1008     sh->n_io_port = 9;
1009     sh->irq = gc->IRQ;
1010     sh->dma_channel = dma_channel;
1011     
1012     /* FIXME:
1013      * SCSI midlevel code should support different HBA ids on every channel
1014      */
1015     sh->this_id = gc->scsi_id[3];
1016     sh->can_queue = ntohs(gc->queuesiz);
1017     
1018     if (gc->OCS_enabled == TRUE) {
1019         if(hd->bustype != IS_ISA)
1020             sh->cmd_per_lun = sh->can_queue/C_P_L_DIV; 
1021         else
1022             sh->cmd_per_lun = 8; /* We artificially limit this to conserve memory, 
1023                                   * which would be needed for ISA bounce buffers */
1024     } else 
1025         sh->cmd_per_lun = 1;
1026     
1027     /* FIXME:
1028      * SG should be allocated more dynamically 
1029      */
1030     /*
1031      * If we are using a ISA board, we can't use extended SG,
1032      * because we would need exessive amounts of memory for
1033      * bounce buffers.
1034      */
1035     if (gc->SG_64K == TRUE && ntohs(gc->SGsiz) == 64 && hd->bustype != IS_ISA){
1036         sh->sg_tablesize = SG_SIZE_BIG;
1037         sh->use_clustering = FALSE;
1038     } else {
1039         sh->sg_tablesize = ntohs(gc->SGsiz);
1040         sh->use_clustering = TRUE;
1041         if (sh->sg_tablesize > SG_SIZE || sh->sg_tablesize == 0) {
1042             sh->sg_tablesize = SG_SIZE;
1043             if (ntohs(gc->SGsiz) == 0)
1044                 printk("Warning: SG size had to be corrected.\n"
1045                        "This might be a PM2012 with a defective Firmware\n");
1046         }
1047     }
1048     
1049     if (gc->SECOND)
1050         hd->primary = FALSE;
1051     else
1052         hd->primary = TRUE;
1053     
1054     sh->wish_block = FALSE;        
1055     
1056     if (hd->bustype != IS_ISA) {
1057         sh->unchecked_isa_dma = FALSE;
1058     } else {
1059         sh->unchecked_isa_dma = TRUE;   /* We're doing ISA DMA */
1060     }
1061     
1062     for(x = 0; x <= 11; x++){            /* Initialize min. latency */
1063         hd->writes_lat[x][1] = 0xffffffff;
1064         hd->reads_lat[x][1] = 0xffffffff;
1065     }
1066 
1067     hd->next = NULL;    /* build a linked list of all HBAs */
1068     hd->prev = last_HBA;
1069     if(hd->prev != NULL)
1070         SD(hd->prev)->next = sh;
1071     last_HBA = sh;
1072     if (first_HBA == NULL)
1073         first_HBA = sh;
1074     registered_HBAs++;
1075     
1076     return (TRUE);
1077 }
1078 
1079 
1080 void find_EISA(struct get_conf *buf, Scsi_Host_Template * tpnt)
     /*  */
1081 {
1082     u32 base;
1083     int i;
1084     
1085 #if CHECKPAL
1086     u8 pal1, pal2, pal3;
1087 #endif
1088     
1089     for (i = 0; i < MAXEISA; i++) {
1090         if (EISAbases[i] == TRUE) { /* Still a possibility ?          */
1091             
1092             base = 0x1c88 + (i * 0x1000);
1093 #if CHECKPAL
1094             pal1 = inb((u16)base - 8);
1095             pal2 = inb((u16)base - 7);
1096             pal3 = inb((u16)base - 6);
1097             
1098             if (((pal1 == 0x12) && (pal2 == 0x14)) ||
1099                 ((pal1 == 0x38) && (pal2 == 0xa3) && (pal3 == 0x82)) ||
1100                 ((pal1 == 0x06) && (pal2 == 0x94) && (pal3 == 0x24))) {
1101                 DBG(DBG_PROBE, printk("EISA EATA id tags found: %x %x %x \n",
1102                                       (int)pal1, (int)pal2, (int)pal3));
1103 #endif
1104                 if (get_conf_PIO(base, buf) == TRUE) {
1105                     DBG(DBG_PROBE && DBG_EISA, print_config(buf));
1106                     if (buf->IRQ) {  
1107                         register_HBA(base, buf, tpnt, IS_EISA);
1108                     } else
1109                         printk("eata_dma: No valid IRQ. HBA removed from list\n");
1110                 } else {
1111                     if (check_blink_state(base)) 
1112                         printk("HBA is in BLINK state. Consult your HBAs "
1113                                " Manual to correct this.\n");
1114                 } 
1115                 /* Nothing found here so we take it from the list */
1116                 EISAbases[i] = 0;  
1117 #if CHECKPAL
1118             } 
1119 #endif
1120         }
1121     }
1122     return; 
1123 }
1124 
1125 void find_ISA(struct get_conf *buf, Scsi_Host_Template * tpnt)
     /*  */
1126 {
1127     int i;
1128     
1129     for (i = 0; i < MAXISA; i++) {  
1130         if (ISAbases[i]) {  
1131             if (get_conf_PIO(ISAbases[i],buf) == TRUE){
1132                 register_HBA(ISAbases[i], buf, tpnt, IS_ISA);
1133             } else {
1134                 if (check_blink_state(ISAbases[i])) 
1135                     printk("HBA is in BLINK state. Consult your HBAs "
1136                            "Manual to correct this.\n");
1137             }
1138             ISAbases[i] = 0;
1139         }
1140     }
1141     return;
1142 }
1143 
1144 void find_PCI(struct get_conf *buf, Scsi_Host_Template * tpnt)
     /*  */
1145 {
1146 
1147 #ifndef CONFIG_PCI
1148     printk("eata_dma: kernel PCI support not enabled. Skipping scan for PCI HBAs.\n");
1149 #else
1150     
1151     u8 pci_bus, pci_device_fn;
1152     static s16 pci_index = 0;   /* Device index to PCI BIOS calls */
1153     u32 base = 0;
1154     u16 com_adr;
1155     u16 rev_device;
1156     u32 error, i, x;
1157 
1158     if (pcibios_present()) {
1159         for (i = 0; i <= MAXPCI; ++i, ++pci_index) {
1160             if (pcibios_find_device(PCI_VENDOR_ID_DPT, PCI_DEVICE_ID_DPT, 
1161                                     pci_index, &pci_bus, &pci_device_fn))
1162                 break;
1163             DBG(DBG_PROBE && DBG_PCI, 
1164                 printk("eata_dma: HBA at bus %d, device %d,"
1165                        " function %d, index %d\n", (s32)pci_bus, 
1166                        (s32)((pci_device_fn & 0xf8) >> 3),
1167                        (s32)(pci_device_fn & 7), pci_index));
1168             
1169             if (!(error = pcibios_read_config_word(pci_bus, pci_device_fn, 
1170                                        PCI_CLASS_DEVICE, &rev_device))) {
1171                 if (rev_device == PCI_CLASS_STORAGE_SCSI) {
1172                     if (!(error = pcibios_read_config_word(pci_bus, 
1173                                                pci_device_fn, PCI_COMMAND, 
1174                                                (u16 *) & com_adr))) {
1175                         if (!((com_adr & PCI_COMMAND_IO) && 
1176                               (com_adr & PCI_COMMAND_MASTER))) {
1177                             printk("eata_dma: HBA has IO or BUSMASTER mode disabled\n");
1178                             continue;
1179                         }
1180                     } else
1181                         printk("eata_dma: error %x while reading "
1182                                "PCI_COMMAND\n", error);
1183                 } else
1184                     printk("eata_dma: DEVICECLASSID %x didn't match\n", 
1185                            rev_device);
1186             } else {
1187                 printk("eata_dma: error %x while reading PCI_CLASS_BASE\n", 
1188                        error);
1189                 continue;
1190             }
1191             
1192             if (!(error = pcibios_read_config_dword(pci_bus, pci_device_fn,
1193                                        PCI_BASE_ADDRESS_0, (int *) &base))){
1194                 
1195                 /* Check if the address is valid */
1196                 if (base & 0x01) {
1197                     base &= 0xfffffffe;
1198                     /* EISA tag there ? */
1199                     if ((inb(base) == 0x12) && (inb(base + 1) == 0x14))
1200                         continue;   /* Jep, it's forced, so move on  */
1201                     base += 0x10;   /* Now, THIS is the real address */
1202                     if (base != 0x1f8) {
1203                         /* We didn't find it in the primary search */
1204                         if (get_conf_PIO(base, buf) == TRUE) {
1205                             if (buf->FORCADR)   /* If the address is forced */
1206                                 continue;       /* we'll find it later      */
1207                             
1208                             /* OK. We made it till here, so we can go now  
1209                              * and register it. We  only have to check and 
1210                              * eventually remove it from the EISA and ISA list 
1211                              */
1212                             
1213                             register_HBA(base, buf, tpnt, IS_PCI);
1214                             
1215                             if (base < 0x1000) {
1216                                 for (x = 0; x < MAXISA; ++x) {
1217                                     if (ISAbases[x] == base) {
1218                                         ISAbases[x] = 0;
1219                                         break;
1220                                     }
1221                                 }
1222                             } else if ((base & 0x0fff) == 0x0c88) 
1223                                 EISAbases[(base >> 12) & 0x0f] = 0;
1224                             continue;  /* break; */
1225                         } else if (check_blink_state(base) == TRUE) {
1226                             printk("eata_dma: HBA is in BLINK state.\n"
1227                                    "Consult your HBAs Manual to correct this.\n");
1228                         }
1229                     }
1230                 }
1231             } else {
1232                 printk("eata_dma: error %x while reading "
1233                        "PCI_BASE_ADDRESS_0\n", error);
1234             }
1235         }
1236     } else {
1237         printk("eata_dma: No BIOS32 extensions present. This driver release "
1238                "still depends on it.\n"
1239                "          Skipping scan for PCI HBAs. \n");
1240     }
1241 #endif /* #ifndef CONFIG_PCI */
1242     return;
1243 }
1244 
1245 int eata_detect(Scsi_Host_Template * tpnt)
     /*  */
1246 {
1247     struct Scsi_Host *HBA_ptr;
1248     struct get_conf gc;
1249     int i;
1250     
1251     DBG((DBG_PROBE && DBG_DELAY) || DPT_DEBUG,
1252         printk("Using lots of delays to let you read the debugging output\n"));
1253 
1254     status = scsi_init_malloc(512, GFP_ATOMIC | GFP_DMA);
1255     dma_scratch = scsi_init_malloc(512, GFP_ATOMIC | GFP_DMA);
1256 
1257     if(status == NULL || dma_scratch == NULL) {
1258         printk("eata_dma: can't allocate enough memory to probe for hosts !\n");
1259         return(0);
1260     }
1261 
1262     find_PCI(&gc, tpnt);
1263     
1264     find_EISA(&gc, tpnt);
1265     
1266     find_ISA(&gc, tpnt);
1267     
1268     for (i = 0; i <= MAXIRQ; i++) { /* Now that we know what we have, we     */
1269         if (reg_IRQ[i]){            /* exchange the interrupt handler which  */
1270             free_irq(i);            /* we used for probing with the real one */
1271             request_irq(i, (void *)(eata_int_handler), SA_INTERRUPT, "eata_dma");
1272         }
1273     }
1274     HBA_ptr = first_HBA;
1275     
1276     if (registered_HBAs != 0) {
1277         printk("EATA (Extended Attachment) driver version: %d.%d%s\n"
1278                "developed in co-operation with DPT\n"             
1279                "(c) 1993-95 Michael Neuffer, neuffer@goofy.zdv.uni-mainz.de\n",
1280                VER_MAJOR, VER_MINOR, VER_SUB);
1281         printk("Registered HBAs:");
1282         printk("\nHBA no. Boardtype: Revis: EATA: Bus: BaseIO: IRQ: DMA: Ch: "
1283                "ID: Pr: QS: SG: CPL:\n");
1284         for (i = 1; i <= registered_HBAs; i++) {
1285             printk("scsi%-2d: %.10s v%s 2.0%c  %s %#.4x   %2d",
1286                    HBA_ptr->host_no, SD(HBA_ptr)->name, SD(HBA_ptr)->revision,
1287                    SD(HBA_ptr)->EATA_revision, (SD(HBA_ptr)->bustype == 'P')? 
1288                    "PCI ":(SD(HBA_ptr)->bustype == 'E')?"EISA":"ISA ",
1289                    (u32) HBA_ptr->base, HBA_ptr->irq);
1290             if(HBA_ptr->dma_channel != 0xff)
1291                 printk("   %2x ", HBA_ptr->dma_channel);
1292             else
1293                 printk("  %s", "BMST");
1294             printk("  %d   %d   %c  %2d  %2d   %2d\n", SD(HBA_ptr)->channel, 
1295                    HBA_ptr->this_id, (SD(HBA_ptr)->primary == TRUE)?'Y':'N', 
1296                    HBA_ptr->can_queue, HBA_ptr->sg_tablesize, HBA_ptr->cmd_per_lun);
1297             HBA_ptr = SD(HBA_ptr)->next;
1298         }
1299     } else {
1300         scsi_init_free((void *)status, 512);
1301     }
1302 
1303     scsi_init_free((void *)dma_scratch, 512);
1304 
1305     DBG(DPT_DEBUG, DELAY(12));
1306 
1307     return(registered_HBAs);
1308 }
1309 
1310 #ifdef MODULE
1311 /* Eventually this will go into an include file, but this will be later */
1312 Scsi_Host_Template driver_template = EATA_DMA;
1313 #include "scsi_module.c"
1314 #endif
1315 
1316 /*
1317  * Overrides for Emacs so that we almost follow Linus's tabbing style.
1318  * Emacs will notice this stuff at the end of the file and automatically
1319  * adjust the settings for this buffer only.  This must remain at the end
1320  * of the file.
1321  * ---------------------------------------------------------------------------
1322  * Local variables:
1323  * c-indent-level: 4
1324  * c-brace-imaginary-offset: 0
1325  * c-brace-offset: -4
1326  * c-argdecl-indent: 4
1327  * c-label-offset: -4
1328  * c-continued-statement-offset: 4
1329  * c-continued-brace-offset: 0
1330  * tab-width: 8
1331  * End:
1332  */
/* */
root/drivers/scsi/eata_dma.c

DEFINITIONS
