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     } else
 544         panic("eata_dma: abort: invalid slot status\n");
 545 }
 546 
 547 int eata_reset(Scsi_Cmnd * cmd)
     /*  */
 548 {
 549     ushort x, z; 
 550     ulong time, limit = 0;
 551     ulong loop = R_LIMIT;
 552     ulong flags;
 553     unchar success = FALSE;
 554     Scsi_Cmnd *sp; 
 555     
 556     save_flags(flags);
 557     cli();
 558     
 559     DBG(DBG_ABNORM, printk("eata_reset called pid:%ld target: %x lun: %x"
 560                            " reason %x\n", cmd->pid, cmd->target, cmd->lun, 
 561                            cmd->abort_reason));
 562         
 563     if (HD(cmd)->state == RESET) {
 564         printk("eata_reset: exit, already in reset.\n");
 565         restore_flags(flags);
 566         DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 567         return (SCSI_RESET_ERROR);
 568     }
 569     
 570     while (inb((u32)(cmd->host->base) + HA_RAUXSTAT) & HA_ABUSY)
 571         if (--loop == 0) {
 572             printk("eata_reset: exit, timeout error.\n");
 573             restore_flags(flags);
 574             DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 575             return (SCSI_RESET_ERROR);
 576         }
 577  
 578     for (x = 0; x < MAXCHANNEL; x++) {
 579         for (z = 0; z < MAXTARGET; z++) {
 580             HD(cmd)->t_state[x][z] = RESET;
 581             HD(cmd)->t_timeout[x][z] = NO_TIMEOUT;
 582         }
 583     }
 584 
 585     for (x = 0; x < cmd->host->can_queue; x++) {
 586         if (HD(cmd)->ccb[x].status == FREE)
 587             continue;
 588         
 589         if (HD(cmd)->ccb[x].status == LOCKED) {
 590             HD(cmd)->ccb[x].status = FREE;
 591             printk("eata_reset: locked slot %d forced free.\n", x);
 592             DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 593             continue;
 594         }
 595         sp = HD(cmd)->ccb[x].cmd;
 596         HD(cmd)->ccb[x].status = RESET;
 597         printk("eata_reset: slot %d in reset, pid %ld.\n", x, sp->pid);
 598         DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 599         
 600         if (sp == NULL)
 601             panic("eata_reset: slot %d, sp==NULL.\n", x);
 602         DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 603         
 604         if (sp == cmd)
 605             success = TRUE;
 606     }
 607     
 608     /* hard reset the HBA  */
 609     inb((u32) (cmd->host->base) + HA_RSTATUS);  /* This might cause trouble */
 610     eata_send_command(0, (u32) cmd->host->base, EATA_CMD_RESET);
 611     
 612     DBG(DBG_ABNORM, printk("eata_reset: board reset done, enabling interrupts.\n"));
 613     HD(cmd)->state = RESET;
 614     
 615     restore_flags(flags);
 616     
 617     time = jiffies;
 618     while (jiffies < (time + (3 * HZ)) || limit++ < 10000000)
 619         /* As time goes by... */;
 620     
 621     save_flags(flags);
 622     cli();
 623     
 624     DBG(DBG_ABNORM, printk("eata_reset: interrupts disabled, loops %ld.\n", 
 625                            limit));
 626     DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 627     
 628     for (x = 0; x < cmd->host->can_queue; x++) {
 629         
 630         /* Skip slots already set free by interrupt */
 631         if (HD(cmd)->ccb[x].status != RESET)
 632             continue;
 633         
 634         sp = HD(cmd)->ccb[x].cmd;
 635         sp->result = DID_RESET << 16;
 636         
 637         /* This mailbox is still waiting for its interrupt */
 638         HD(cmd)->ccb[x].status = LOCKED;
 639         
 640         printk("eata_reset: slot %d locked, DID_RESET, pid %ld done.\n",
 641                x, sp->pid);
 642         DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 643         restore_flags(flags);
 644         sp->scsi_done(sp);
 645         cli();
 646     }
 647     
 648     HD(cmd)->state = FALSE;
 649     restore_flags(flags);
 650     
 651     if (success) {
 652         DBG(DBG_ABNORM, printk("eata_reset: exit, success.\n"));
 653         DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 654         return (SCSI_RESET_SUCCESS);
 655     } else {
 656         DBG(DBG_ABNORM, printk("eata_reset: exit, wakeup.\n"));
 657         DBG(DBG_ABNORM && DBG_DELAY, DEL2(500));
 658         return (SCSI_RESET_PUNT);
 659     }
 660 }
 661 
 662 char * get_board_data(u32 base, u32 irq, u32 id)
     /*  */
 663 {
 664     struct eata_ccb *cp;
 665     struct eata_sp  *sp;
 666     static char *buff;
 667     ulong i;
 668     ulong limit = 0;
 669 
 670     cp = (struct eata_ccb *) scsi_init_malloc(sizeof(struct eata_ccb),
 671                                               GFP_ATOMIC | GFP_DMA);
 672     sp = (struct eata_sp *) scsi_init_malloc(sizeof(struct eata_sp), 
 673                                              GFP_ATOMIC | GFP_DMA);
 674 
 675     buff = dma_scratch;
 676  
 677     memset(cp, 0, sizeof(struct eata_ccb));
 678     memset(sp, 0, sizeof(struct eata_sp));
 679     memset(buff, 0, 256);
 680 
 681     cp->DataIn = TRUE;     
 682     cp->Interpret = TRUE;   /* Interpret command */
 683     cp->cp_dispri = TRUE;
 684     cp->cp_identify = TRUE;
 685  
 686     cp->cp_datalen = htonl(56);  
 687     cp->cp_dataDMA = htonl(virt_to_bus(buff));
 688     cp->cp_statDMA = htonl(virt_to_bus(sp));
 689     cp->cp_viraddr = cp;
 690     
 691     cp->cp_id = id;
 692     cp->cp_lun = 0;
 693 
 694     cp->cp_cdb[0] = INQUIRY;
 695     cp->cp_cdb[1] = 0;
 696     cp->cp_cdb[2] = 0;
 697     cp->cp_cdb[3] = 0;
 698     cp->cp_cdb[4] = 56;
 699     cp->cp_cdb[5] = 0;
 700 
 701     fake_int_base = base;
 702     fake_int_result = FALSE;
 703     fake_int_happened = FALSE;
 704 
 705     eata_send_command((u32) cp, (u32) base, EATA_CMD_DMA_SEND_CP);
 706     
 707     i = jiffies + (3 * HZ);
 708     while (fake_int_happened == FALSE && jiffies <= i) 
 709         barrier();
 710     
 711     DBG(DBG_INTR3, printk("fake_int_result: %#x hbastat %#x scsistat %#x,"
 712                           " buff %p sp %p\n",
 713                           fake_int_result, (u32) (sp->hba_stat /*& 0x7f*/), 
 714                           (u32) sp->scsi_stat, buff, sp));
 715 
 716     scsi_init_free((void *)cp, sizeof(struct eata_ccb));
 717     scsi_init_free((void *)sp, sizeof(struct eata_sp));
 718     
 719     if ((fake_int_result & HA_SERROR) || jiffies > i){
 720         /* hard reset the HBA  */
 721         inb((u32) (base) + HA_RSTATUS);
 722         eata_send_command(0, base, EATA_CMD_RESET);
 723         i = jiffies;
 724         while (jiffies < (i + (3 * HZ)) && limit++ < 10000000) 
 725             barrier();
 726         return (NULL);
 727     } else
 728         return (buff);
 729 }
 730     
 731 int check_blink_state(long base)
     /*  */
 732 {
 733     ushort loops = 10;
 734     u32 blinkindicator;
 735     u32 state = 0x12345678;
 736     u32 oldstate = 0;
 737 
 738     blinkindicator = htonl(0x54504442);
 739     while ((loops--) && (state != oldstate)) {
 740         oldstate = state;
 741         state = inl((uint) base + 1);
 742     }
 743 
 744     DBG(DBG_BLINK, printk("Did Blink check. Status: %d\n",
 745               (state == oldstate) && (state == blinkindicator)));
 746 
 747     if ((state == oldstate) && (state == blinkindicator))
 748         return(TRUE);
 749     else
 750         return (FALSE);
 751 }
 752 
 753 int get_conf_PIO(u32 base, struct get_conf *buf)
     /*  */
 754 {
 755     ulong loop = R_LIMIT;
 756     u16 *p;
 757 
 758     if(check_region(base, 9)) 
 759         return (FALSE);
 760      
 761     memset(buf, 0, sizeof(struct get_conf));
 762 
 763     while (inb(base + HA_RSTATUS) & HA_SBUSY)
 764         if (--loop == 0) 
 765             return (FALSE);
 766        
 767     DBG(DBG_PIO && DBG_PROBE,
 768         printk("Issuing PIO READ CONFIG to HBA at %#x\n", base));
 769     eata_send_command(0, base, EATA_CMD_PIO_READ_CONFIG);
 770 
 771     loop = R_LIMIT;
 772     for (p = (u16 *) buf; 
 773          (long)p <= ((long)buf + (sizeof(struct get_conf) / 2)); p++) {
 774         while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
 775             if (--loop == 0)
 776                 return (FALSE);
 777 
 778         loop = R_LIMIT;
 779         *p = inw(base + HA_RDATA);
 780     }
 781 
 782     if (!(inb(base + HA_RSTATUS) & HA_SERROR)) {            /* Error ? */
 783         if (htonl(EATA_SIGNATURE) == buf->signature) {
 784             DBG(DBG_PIO&&DBG_PROBE, printk("EATA Controller found at %x "
 785                                            "EATA Level: %x\n", (uint) base, 
 786                                            (uint) (buf->version)));
 787             
 788             while (inb(base + HA_RSTATUS) & HA_SDRQ) 
 789                 inw(base + HA_RDATA);
 790             return (TRUE);
 791         } 
 792     } else {
 793         DBG(DBG_PROBE, printk("eata_dma: get_conf_PIO, error during transfer "
 794                   "for HBA at %lx\n", (long)base));
 795     }
 796     return (FALSE);
 797 }
 798 
 799 void print_config(struct get_conf *gc)
     /*  */
 800 {
 801     printk("Please check values: (read config data)\n");
 802     printk("LEN: %d ver:%d OCS:%d TAR:%d TRNXFR:%d MORES:%d DMAS:%d\n",
 803            (u32) ntohl(gc->len), gc->version,
 804            gc->OCS_enabled, gc->TAR_support, gc->TRNXFR, gc->MORE_support,
 805            gc->DMA_support);
 806     printk("DMAV:%d HAAV:%d SCSIID0:%d ID1:%d ID2:%d QUEUE:%d SG:%d SEC:%d\n",
 807            gc->DMA_valid, gc->HAA_valid, gc->scsi_id[3], gc->scsi_id[2],
 808            gc->scsi_id[1], ntohs(gc->queuesiz), ntohs(gc->SGsiz), gc->SECOND);
 809     printk("IRQ:%d IRQT:%d DMAC:%d FORCADR:%d SG_64K:%d SG_UAE:%d MID:%d "
 810            "MCH:%d MLUN:%d\n",
 811            gc->IRQ, gc->IRQ_TR, (8 - gc->DMA_channel) & 7, gc->FORCADR, 
 812            gc->SG_64K, gc->SG_UAE, gc->MAX_ID, gc->MAX_CHAN, gc->MAX_LUN); 
 813     printk("RIDQ:%d PCI:%d EISA:%d\n",
 814            gc->ID_qest, gc->is_PCI, gc->is_EISA);
 815     DBG(DPT_DEBUG, DELAY(14));
 816 }
 817 
 818 short register_HBA(u32 base, struct get_conf *gc, Scsi_Host_Template * tpnt, 
     /*  */
 819                    u8 bustype)
 820 {
 821     ulong size = 0;
 822     unchar dma_channel = 0;
 823     char *buff = 0;
 824     unchar bugs = 0;
 825     struct Scsi_Host *sh;
 826     hostdata *hd;
 827     int x;
 828     
 829     
 830     DBG(DBG_REGISTER, print_config(gc));
 831 
 832     if (gc->DMA_support == FALSE) {
 833         printk("The EATA HBA at %#.4x does not support DMA.\n" 
 834                "Please use the EATA-PIO driver.\n", base);
 835         return (FALSE);
 836     }
 837 
 838     if(gc->HAA_valid == FALSE || ntohl(gc->len) < 0x22) 
 839         gc->MAX_CHAN = 0;
 840     
 841     if (reg_IRQ[gc->IRQ] == FALSE) {    /* Interrupt already registered ? */
 842         if (!request_irq(gc->IRQ, (void *) eata_fake_int_handler, SA_INTERRUPT,
 843                          "eata_dma")){
 844             reg_IRQ[gc->IRQ]++;
 845             if (!gc->IRQ_TR)
 846                 reg_IRQL[gc->IRQ] = TRUE;   /* IRQ is edge triggered */
 847         } else {
 848             printk("Couldn't allocate IRQ %d, Sorry.", gc->IRQ);
 849             return (FALSE);
 850         }
 851     } else {            /* More than one HBA on this IRQ */
 852         if (reg_IRQL[gc->IRQ] == TRUE) {
 853             printk("Can't support more than one HBA on this IRQ,\n"
 854                    "  if the IRQ is edge triggered. Sorry.\n");
 855             return (FALSE);
 856         } else
 857             reg_IRQ[gc->IRQ]++;
 858     }
 859     
 860     /* if gc->DMA_valid it must be an ISA HBA and we have to register it */
 861     dma_channel = 0xff;
 862     if (gc->DMA_valid) {
 863         if (request_dma(dma_channel = (8 - gc->DMA_channel) & 7, "eata_dma")) {
 864             printk("Unable to allocate DMA channel %d for ISA HBA at %#.4x.\n",
 865                    dma_channel, base);
 866             reg_IRQ[gc->IRQ]--;
 867             if (reg_IRQ[gc->IRQ] == 0)
 868                 free_irq(gc->IRQ);
 869             if (gc->IRQ_TR == FALSE)
 870                 reg_IRQL[gc->IRQ] = FALSE; 
 871             return (FALSE);
 872         }
 873     }
 874  
 875 #if !(NEWSTUFF)
 876     if (bustype != IS_EISA && bustype != IS_ISA)
 877 #endif
 878         buff = get_board_data(base, gc->IRQ, gc->scsi_id[3]);
 879 
 880     if (buff == NULL) {
 881 #if !(NEWSTUFF)
 882         if (bustype == IS_EISA || bustype == IS_ISA) {
 883             bugs = bugs || BROKEN_INQUIRY;
 884         } else {
 885 #endif
 886             if (gc->DMA_support == FALSE)
 887                 printk("HBA at %#.4x doesn't support DMA. Sorry\n", base);
 888             else
 889                 printk("HBA at %#.4x does not react on INQUIRY. Sorry.\n", 
 890                        base);
 891             if (gc->DMA_valid) 
 892                 free_dma(dma_channel);
 893             reg_IRQ[gc->IRQ]--;
 894             if (reg_IRQ[gc->IRQ] == 0)
 895                 free_irq(gc->IRQ);
 896             if (gc->IRQ_TR == FALSE)
 897                 reg_IRQL[gc->IRQ] = FALSE; 
 898             return (FALSE);
 899 #if !(NEWSTUFF)
 900         }
 901 #endif
 902     }
 903     
 904     if (gc->DMA_support == FALSE && buff != NULL)  
 905         printk("HBA %.12sat %#.4x doesn't set the DMA_support flag correctly.\n",
 906                &buff[16], base);
 907     
 908     request_region(base, 9, "eata_dma"); /* We already checked the 
 909                                           * availability, so this
 910                                           * should not fail.
 911                                           */
 912     
 913     if(ntohs(gc->queuesiz) == 0) {
 914         gc->queuesiz = ntohs(64);
 915         printk("Warning: Queue size has to be corrected. Assuming 64 queueslots\n"
 916                "         This might be a PM2012B with a defective Firmware\n");
 917     }
 918 
 919     size = sizeof(hostdata) + ((sizeof(struct eata_ccb) + sizeof(long)) 
 920                                * ntohs(gc->queuesiz));
 921 
 922     DBG(DBG_REGISTER, printk("scsi_register size: %ld\n", size));
 923     
 924     sh = scsi_register(tpnt, size);
 925     
 926     if(sh == NULL) {
 927         if (gc->DMA_valid) 
 928             free_dma(dma_channel);
 929         
 930         reg_IRQ[gc->IRQ]--;
 931         if (reg_IRQ[gc->IRQ] == 0)
 932             free_irq(gc->IRQ);
 933         if (gc->IRQ_TR == FALSE)
 934             reg_IRQL[gc->IRQ] = FALSE; 
 935         return (FALSE);
 936     }
 937     
 938     hd = SD(sh);                   
 939     
 940     memset(hd->ccb, 0, sizeof(struct eata_ccb) * ntohs(gc->queuesiz));
 941     memset(hd->reads, 0, sizeof(u32) * 26); 
 942 
 943     hd->broken_INQUIRY = (bugs & BROKEN_INQUIRY);
 944 
 945     if(hd->broken_INQUIRY == TRUE) {
 946         strcpy(SD(sh)->vendor, "DPT");
 947         strcpy(SD(sh)->name, "??????????");
 948         strcpy(SD(sh)->revision, "???.?");
 949     } else {    
 950         strncpy(SD(sh)->vendor, &buff[8], 8);
 951         SD(sh)->vendor[8] = 0;
 952         strncpy(SD(sh)->name, &buff[16], 17);
 953         SD(sh)->name[17] = 0;
 954         SD(sh)->revision[0] = buff[32];
 955         SD(sh)->revision[1] = buff[33];
 956         SD(sh)->revision[2] = buff[34];
 957         SD(sh)->revision[3] = '.';
 958         SD(sh)->revision[4] = buff[35];
 959         SD(sh)->revision[5] = 0;
 960     }
 961 
 962     switch (ntohl(gc->len)) {
 963     case 0x1c:
 964         SD(sh)->EATA_revision = 'a';
 965         break;
 966     case 0x1e:
 967         SD(sh)->EATA_revision = 'b';
 968         break;
 969     case 0x22:
 970         SD(sh)->EATA_revision = 'c';
 971         break;
 972     case 0x24:
 973         SD(sh)->EATA_revision = 'z';            
 974     default:
 975         SD(sh)->EATA_revision = '?';
 976     }
 977 
 978     if(ntohl(gc->len) >= 0x22) {
 979         if (gc->is_PCI == TRUE)
 980             hd->bustype = IS_PCI;
 981         else if (gc->is_EISA == TRUE)
 982             hd->bustype = IS_EISA;
 983         else
 984             hd->bustype = IS_ISA;
 985     } else if(hd->broken_INQUIRY == FALSE) {
 986         if (buff[21] == '4')
 987             hd->bustype = IS_PCI;
 988         else if (buff[21] == '2')
 989             hd->bustype = IS_EISA;
 990         else
 991             hd->bustype = IS_ISA;
 992     } else 
 993         hd->bustype = bustype;
 994     
 995     if(ntohl(gc->len) >= 0x22) {
 996         sh->max_id = gc->MAX_ID + 1;
 997         sh->max_lun = gc->MAX_LUN + 1;
 998     } else {
 999         sh->max_id = 8;
1000         sh->max_lun = 8;
1001     }
1002 
1003     hd->channel = gc->MAX_CHAN;     
1004     sh->max_channel = gc->MAX_CHAN; 
1005     sh->base = (char *) base;
1006     sh->io_port = (u16) base;
1007     sh->n_io_port = 9;
1008     sh->irq = gc->IRQ;
1009     sh->dma_channel = dma_channel;
1010     
1011     /* FIXME:
1012      * SCSI midlevel code should support different HBA ids on every channel
1013      */
1014     sh->this_id = gc->scsi_id[3];
1015     sh->can_queue = ntohs(gc->queuesiz);
1016     
1017     if (gc->OCS_enabled == TRUE) {
1018         if(hd->bustype != IS_ISA)
1019             sh->cmd_per_lun = sh->can_queue/C_P_L_DIV; 
1020         else
1021             sh->cmd_per_lun = 8; /* We artificially limit this to conserve memory, 
1022                                   * which would be needed for ISA bounce buffers */
1023     } else 
1024         sh->cmd_per_lun = 1;
1025     
1026     /* FIXME:
1027      * SG should be allocated more dynamically 
1028      */
1029     /*
1030      * If we are using a ISA board, we can't use extended SG,
1031      * because we would need exessive amounts of memory for
1032      * bounce buffers.
1033      */
1034     if (gc->SG_64K == TRUE && ntohs(gc->SGsiz) == 64 && hd->bustype != IS_ISA){
1035         sh->sg_tablesize = SG_SIZE_BIG;
1036         sh->use_clustering = FALSE;
1037     } else {
1038         sh->sg_tablesize = ntohs(gc->SGsiz);
1039         sh->use_clustering = TRUE;
1040         if (sh->sg_tablesize > SG_SIZE || sh->sg_tablesize == 0) {
1041             sh->sg_tablesize = SG_SIZE;
1042             if (ntohs(gc->SGsiz) == 0)
1043                 printk("Warning: SG size had to be corrected.\n"
1044                        "This might be a PM2012 with a defective Firmware\n");
1045         }
1046     }
1047     
1048     if (gc->SECOND)
1049         hd->primary = FALSE;
1050     else
1051         hd->primary = TRUE;
1052     
1053     sh->wish_block = FALSE;        
1054     
1055     if (hd->bustype != IS_ISA) {
1056         sh->unchecked_isa_dma = FALSE;
1057     } else {
1058         sh->unchecked_isa_dma = TRUE;   /* We're doing ISA DMA */
1059     }
1060     
1061     for(x = 0; x <= 11; x++){            /* Initialize min. latency */
1062         hd->writes_lat[x][1] = 0xffffffff;
1063         hd->reads_lat[x][1] = 0xffffffff;
1064     }
1065 
1066     hd->next = NULL;    /* build a linked list of all HBAs */
1067     hd->prev = last_HBA;
1068     if(hd->prev != NULL)
1069         SD(hd->prev)->next = sh;
1070     last_HBA = sh;
1071     if (first_HBA == NULL)
1072         first_HBA = sh;
1073     registered_HBAs++;
1074     
1075     return (TRUE);
1076 }
1077 
1078 
1079 void find_EISA(struct get_conf *buf, Scsi_Host_Template * tpnt)
     /*  */
1080 {
1081     u32 base;
1082     int i;
1083     
1084 #if CHECKPAL
1085     u8 pal1, pal2, pal3;
1086 #endif
1087     
1088     for (i = 0; i < MAXEISA; i++) {
1089         if (EISAbases[i] == TRUE) { /* Still a possibility ?          */
1090             
1091             base = 0x1c88 + (i * 0x1000);
1092 #if CHECKPAL
1093             pal1 = inb((u16)base - 8);
1094             pal2 = inb((u16)base - 7);
1095             pal3 = inb((u16)base - 6);
1096             
1097             if (((pal1 == 0x12) && (pal2 == 0x14)) ||
1098                 ((pal1 == 0x38) && (pal2 == 0xa3) && (pal3 == 0x82)) ||
1099                 ((pal1 == 0x06) && (pal2 == 0x94) && (pal3 == 0x24))) {
1100                 DBG(DBG_PROBE, printk("EISA EATA id tags found: %x %x %x \n",
1101                                       (int)pal1, (int)pal2, (int)pal3));
1102 #endif
1103                 if (get_conf_PIO(base, buf) == TRUE) {
1104                     DBG(DBG_PROBE && DBG_EISA, print_config(buf));
1105                     if (buf->IRQ) {  
1106                         register_HBA(base, buf, tpnt, IS_EISA);
1107                     } else
1108                         printk("eata_dma: No valid IRQ. HBA removed from list\n");
1109                 } else {
1110                     if (check_blink_state(base)) 
1111                         printk("HBA is in BLINK state. Consult your HBAs "
1112                                " Manual to correct this.\n");
1113                 } 
1114                 /* Nothing found here so we take it from the list */
1115                 EISAbases[i] = 0;  
1116 #if CHECKPAL
1117             } 
1118 #endif
1119         }
1120     }
1121     return; 
1122 }
1123 
1124 void find_ISA(struct get_conf *buf, Scsi_Host_Template * tpnt)
     /*  */
1125 {
1126     int i;
1127     
1128     for (i = 0; i < MAXISA; i++) {  
1129         if (ISAbases[i]) {  
1130             if (get_conf_PIO(ISAbases[i],buf) == TRUE){
1131                 register_HBA(ISAbases[i], buf, tpnt, IS_ISA);
1132             } else {
1133                 if (check_blink_state(ISAbases[i])) 
1134                     printk("HBA is in BLINK state. Consult your HBAs "
1135                            "Manual to correct this.\n");
1136             }
1137             ISAbases[i] = 0;
1138         }
1139     }
1140     return;
1141 }
1142 
1143 void find_PCI(struct get_conf *buf, Scsi_Host_Template * tpnt)
     /*  */
1144 {
1145 
1146 #ifndef CONFIG_PCI
1147     printk("eata_dma: kernel PCI support not enabled. Skipping scan for PCI HBAs.\n");
1148 #else
1149     
1150     u8 pci_bus, pci_device_fn;
1151     static s16 pci_index = 0;   /* Device index to PCI BIOS calls */
1152     u32 base = 0;
1153     u16 com_adr;
1154     u16 rev_device;
1155     u32 error, i, x;
1156 
1157     if (pcibios_present()) {
1158         for (i = 0; i <= MAXPCI; ++i, ++pci_index) {
1159             if (pcibios_find_device(PCI_VENDOR_ID_DPT, PCI_DEVICE_ID_DPT, 
1160                                     pci_index, &pci_bus, &pci_device_fn))
1161                 break;
1162             DBG(DBG_PROBE && DBG_PCI, 
1163                 printk("eata_dma: HBA at bus %d, device %d,"
1164                        " function %d, index %d\n", (s32)pci_bus, 
1165                        (s32)((pci_device_fn & 0xf8) >> 3),
1166                        (s32)(pci_device_fn & 7), pci_index));
1167             
1168             if (!(error = pcibios_read_config_word(pci_bus, pci_device_fn, 
1169                                        PCI_CLASS_DEVICE, &rev_device))) {
1170                 if (rev_device == PCI_CLASS_STORAGE_SCSI) {
1171                     if (!(error = pcibios_read_config_word(pci_bus, 
1172                                                pci_device_fn, PCI_COMMAND, 
1173                                                (u16 *) & com_adr))) {
1174                         if (!((com_adr & PCI_COMMAND_IO) && 
1175                               (com_adr & PCI_COMMAND_MASTER))) {
1176                             printk("eata_dma: HBA has IO or BUSMASTER mode disabled\n");
1177                             continue;
1178                         }
1179                     } else
1180                         printk("eata_dma: error %x while reading "
1181                                "PCI_COMMAND\n", error);
1182                 } else
1183                     printk("eata_dma: DEVICECLASSID %x didn't match\n", 
1184                            rev_device);
1185             } else {
1186                 printk("eata_dma: error %x while reading PCI_CLASS_BASE\n", 
1187                        error);
1188                 continue;
1189             }
1190             
1191             if (!(error = pcibios_read_config_dword(pci_bus, pci_device_fn,
1192                                        PCI_BASE_ADDRESS_0, (int *) &base))){
1193                 
1194                 /* Check if the address is valid */
1195                 if (base & 0x01) {
1196                     base &= 0xfffffffe;
1197                     /* EISA tag there ? */
1198                     if ((inb(base) == 0x12) && (inb(base + 1) == 0x14))
1199                         continue;   /* Jep, it's forced, so move on  */
1200                     base += 0x10;   /* Now, THIS is the real address */
1201                     if (base != 0x1f8) {
1202                         /* We didn't find it in the primary search */
1203                         if (get_conf_PIO(base, buf) == TRUE) {
1204                             if (buf->FORCADR)   /* If the address is forced */
1205                                 continue;       /* we'll find it later      */
1206                             
1207                             /* OK. We made it till here, so we can go now  
1208                              * and register it. We  only have to check and 
1209                              * eventually remove it from the EISA and ISA list 
1210                              */
1211                             
1212                             register_HBA(base, buf, tpnt, IS_PCI);
1213                             
1214                             if (base < 0x1000) {
1215                                 for (x = 0; x < MAXISA; ++x) {
1216                                     if (ISAbases[x] == base) {
1217                                         ISAbases[x] = 0;
1218                                         break;
1219                                     }
1220                                 }
1221                             } else if ((base & 0x0fff) == 0x0c88) 
1222                                 EISAbases[(base >> 12) & 0x0f] = 0;
1223                             continue;  /* break; */
1224                         } else if (check_blink_state(base) == TRUE) {
1225                             printk("eata_dma: HBA is in BLINK state.\n"
1226                                    "Consult your HBAs Manual to correct this.\n");
1227                         }
1228                     }
1229                 }
1230             } else {
1231                 printk("eata_dma: error %x while reading "
1232                        "PCI_BASE_ADDRESS_0\n", error);
1233             }
1234         }
1235     } else {
1236         printk("eata_dma: No BIOS32 extensions present. This driver release "
1237                "still depends on it.\n"
1238                "          Skipping scan for PCI HBAs. \n");
1239     }
1240 #endif /* #ifndef CONFIG_PCI */
1241     return;
1242 }
1243 
1244 int eata_detect(Scsi_Host_Template * tpnt)
     /*  */
1245 {
1246     struct Scsi_Host *HBA_ptr;
1247     struct get_conf gc;
1248     int i;
1249     
1250     DBG((DBG_PROBE && DBG_DELAY) || DPT_DEBUG,
1251         printk("Using lots of delays to let you read the debugging output\n"));
1252 
1253     status = scsi_init_malloc(512, GFP_ATOMIC | GFP_DMA);
1254     dma_scratch = scsi_init_malloc(512, GFP_ATOMIC | GFP_DMA);
1255 
1256     if(status == NULL || dma_scratch == NULL) {
1257         printk("eata_dma: can't allocate enough memory to probe for hosts !\n");
1258         return(0);
1259     }
1260 
1261     find_PCI(&gc, tpnt);
1262     
1263     find_EISA(&gc, tpnt);
1264     
1265     find_ISA(&gc, tpnt);
1266     
1267     for (i = 0; i <= MAXIRQ; i++) { /* Now that we know what we have, we     */
1268         if (reg_IRQ[i]){            /* exchange the interrupt handler which  */
1269             free_irq(i);            /* we used for probing with the real one */
1270             request_irq(i, (void *)(eata_int_handler), SA_INTERRUPT, "eata_dma");
1271         }
1272     }
1273     HBA_ptr = first_HBA;
1274     
1275     if (registered_HBAs != 0) {
1276         printk("EATA (Extended Attachment) driver version: %d.%d%s\n"
1277                "developed in co-operation with DPT\n"             
1278                "(c) 1993-95 Michael Neuffer, neuffer@goofy.zdv.uni-mainz.de\n",
1279                VER_MAJOR, VER_MINOR, VER_SUB);
1280         printk("Registered HBAs:");
1281         printk("\nHBA no. Boardtype: Revis: EATA: Bus: BaseIO: IRQ: DMA: Ch: "
1282                "ID: Pr: QS: SG: CPL:\n");
1283         for (i = 1; i <= registered_HBAs; i++) {
1284             printk("scsi%-2d: %.10s v%s 2.0%c  %s %#.4x   %2d",
1285                    HBA_ptr->host_no, SD(HBA_ptr)->name, SD(HBA_ptr)->revision,
1286                    SD(HBA_ptr)->EATA_revision, (SD(HBA_ptr)->bustype == 'P')? 
1287                    "PCI ":(SD(HBA_ptr)->bustype == 'E')?"EISA":"ISA ",
1288                    (u32) HBA_ptr->base, HBA_ptr->irq);
1289             if(HBA_ptr->dma_channel != 0xff)
1290                 printk("   %2x ", HBA_ptr->dma_channel);
1291             else
1292                 printk("  %s", "BMST");
1293             printk("  %d   %d   %c  %2d  %2d   %2d\n", SD(HBA_ptr)->channel, 
1294                    HBA_ptr->this_id, (SD(HBA_ptr)->primary == TRUE)?'Y':'N', 
1295                    HBA_ptr->can_queue, HBA_ptr->sg_tablesize, HBA_ptr->cmd_per_lun);
1296             HBA_ptr = SD(HBA_ptr)->next;
1297         }
1298     } else {
1299         scsi_init_free((void *)status, 512);
1300     }
1301 
1302     scsi_init_free((void *)dma_scratch, 512);
1303 
1304     DBG(DPT_DEBUG, DELAY(12));
1305 
1306     return(registered_HBAs);
1307 }
1308 
1309 #ifdef MODULE
1310 /* Eventually this will go into an include file, but this will be later */
1311 Scsi_Host_Template driver_template = EATA_DMA;
1312 #include "scsi_module.c"
1313 #endif
1314 
1315 /*
1316  * Overrides for Emacs so that we almost follow Linus's tabbing style.
1317  * Emacs will notice this stuff at the end of the file and automatically
1318  * adjust the settings for this buffer only.  This must remain at the end
1319  * of the file.
1320  * ---------------------------------------------------------------------------
1321  * Local variables:
1322  * c-indent-level: 4
1323  * c-brace-imaginary-offset: 0
1324  * c-brace-offset: -4
1325  * c-argdecl-indent: 4
1326  * c-label-offset: -4
1327  * c-continued-statement-offset: 4
1328  * c-continued-brace-offset: 0
1329  * tab-width: 8
1330  * End:
1331  */
/* */
root/drivers/scsi/eata_dma.c

DEFINITIONS
