1 /* $Id: aha1542.c,v 1.1 1992/07/24 06:27:38 root Exp root $ 2 * linux/kernel/aha1542.c 3 * 4 * Copyright (C) 1992 Tommy Thorn 5 * Copyright (C) 1993, 1994, 1995 Eric Youngdale 6 * 7 * Modified by Eric Youngdale 8 * Use request_irq and request_dma to help prevent unexpected conflicts 9 * Set up on-board DMA controller, such that we do not have to 10 * have the bios enabled to use the aha1542. 11 * Modified by David Gentzel 12 * Don't call request_dma if dma mask is 0 (for BusLogic BT-445S VL-Bus 13 * controller). 14 * Modified by Matti Aarnio 15 * Accept parameters from LILO cmd-line. -- 1-Oct-94 16 * Modified by Mike McLagan <mike.mclagan@linux.org> 17 * Recognise extended mode on AHA1542CP, different bit than 1542CF 18 * 1-Jan-97 19 * Modified by Bjorn L. Thordarson and Einar Thor Einarsson 20 * Recognize that DMA0 is valid DMA channel -- 13-Jul-98 21 * Modified by Chris Faulhaber <jedgar@fxp.org> 22 * Added module command-line options 23 * 19-Jul-99 24 * Modified by Adam Fritzler 25 * Added proper detection of the AHA-1640 (MCA version of AHA-1540) 26 */ 27 28 #include <linux/module.h> 29 #include <linux/interrupt.h> 30 #include <linux/kernel.h> 31 #include <linux/types.h> 32 #include <linux/string.h> 33 #include <linux/ioport.h> 34 #include <linux/delay.h> 35 #include <linux/proc_fs.h> 36 #include <linux/init.h> 37 #include <linux/spinlock.h> 38 #include <linux/isapnp.h> 39 #include <linux/blkdev.h> 40 #include <linux/mca.h> 41 #include <linux/mca-legacy.h> 42 #include <linux/slab.h> 43 44 #include <asm/dma.h> 45 #include <asm/system.h> 46 #include <asm/io.h> 47 48 #include "scsi.h" 49 #include <scsi/scsi_host.h> 50 #include "aha1542.h" 51 52 #define SCSI_BUF_PA(address) isa_virt_to_bus(address) 53 #define SCSI_SG_PA(sgent) (isa_page_to_bus(sg_page((sgent))) + (sgent)->offset) 54 55 #include<linux/stat.h> 56 57 #ifdef DEBUG 58 #define DEB(x) x 59 #else 60 #define DEB(x) 61 #endif 62 63 /* 64 static const char RCSid[] = "$Header: /usr/src/linux/kernel/blk_drv/scsi/RCS/aha1542.c,v 1.1 1992/07/24 06:27:38 root Exp root $"; 65 */ 66 67 /* The adaptec can be configured for quite a number of addresses, but 68 I generally do not want the card poking around at random. We allow 69 two addresses - this allows people to use the Adaptec with a Midi 70 card, which also used 0x330 -- can be overridden with LILO! */ 71 72 #define MAXBOARDS 4 /* Increase this and the sizes of the 73 arrays below, if you need more.. */ 74 75 /* Boards 3,4 slots are reserved for ISAPnP/MCA scans */ 76 77 static unsigned int bases[MAXBOARDS] __initdata = {0x330, 0x334, 0, 0}; 78 79 /* set by aha1542_setup according to the command line; they also may 80 be marked __initdata, but require zero initializers then */ 81 82 static int setup_called[MAXBOARDS]; 83 static int setup_buson[MAXBOARDS]; 84 static int setup_busoff[MAXBOARDS]; 85 static int setup_dmaspeed[MAXBOARDS] __initdata = { -1, -1, -1, -1 }; 86 87 /* 88 * LILO/Module params: aha1542=<PORTBASE>[,<BUSON>,<BUSOFF>[,<DMASPEED>]] 89 * 90 * Where: <PORTBASE> is any of the valid AHA addresses: 91 * 0x130, 0x134, 0x230, 0x234, 0x330, 0x334 92 * <BUSON> is the time (in microsecs) that AHA spends on the AT-bus 93 * when transferring data. 1542A power-on default is 11us, 94 * valid values are in range: 2..15 (decimal) 95 * <BUSOFF> is the time that AHA spends OFF THE BUS after while 96 * it is transferring data (not to monopolize the bus). 97 * Power-on default is 4us, valid range: 1..64 microseconds. 98 * <DMASPEED> Default is jumper selected (1542A: on the J1), 99 * but experimenter can alter it with this. 100 * Valid values: 5, 6, 7, 8, 10 (MB/s) 101 * Factory default is 5 MB/s. 102 */ 103 104 #if defined(MODULE) 105 static int isapnp = 0; 106 static int aha1542[] = {0x330, 11, 4, -1}; 107 module_param_array(aha1542, int, NULL, 0); 108 module_param(isapnp, bool, 0); 109 110 static struct isapnp_device_id id_table[] __initdata = { 111 { 112 ISAPNP_ANY_ID, ISAPNP_ANY_ID, 113 ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1542), 114 0 115 }, 116 {0} 117 }; 118 119 MODULE_DEVICE_TABLE(isapnp, id_table); 120 121 #else 122 static int isapnp = 1; 123 #endif 124 125 #define BIOS_TRANSLATION_1632 0 /* Used by some old 1542A boards */ 126 #define BIOS_TRANSLATION_6432 1 /* Default case these days */ 127 #define BIOS_TRANSLATION_25563 2 /* Big disk case */ 128 129 struct aha1542_hostdata { 130 /* This will effectively start both of them at the first mailbox */ 131 int bios_translation; /* Mapping bios uses - for compatibility */ 132 int aha1542_last_mbi_used; 133 int aha1542_last_mbo_used; 134 Scsi_Cmnd *SCint[AHA1542_MAILBOXES]; 135 struct mailbox mb[2 * AHA1542_MAILBOXES]; 136 struct ccb ccb[AHA1542_MAILBOXES]; 137 }; 138 139 #define HOSTDATA(host) ((struct aha1542_hostdata *) &host->hostdata) 140 141 static DEFINE_SPINLOCK(aha1542_lock); 142 143 144 145 #define WAITnexttimeout 3000000 146 147 static void setup_mailboxes(int base_io, struct Scsi_Host *shpnt); 148 static int aha1542_restart(struct Scsi_Host *shost); 149 static void aha1542_intr_handle(struct Scsi_Host *shost); 150 151 #define aha1542_intr_reset(base) outb(IRST, CONTROL(base)) 152 153 #define WAIT(port, mask, allof, noneof) \ 154 { register int WAITbits; \ 155 register int WAITtimeout = WAITnexttimeout; \ 156 while (1) { \ 157 WAITbits = inb(port) & (mask); \ 158 if ((WAITbits & (allof)) == (allof) && ((WAITbits & (noneof)) == 0)) \ 159 break; \ 160 if (--WAITtimeout == 0) goto fail; \ 161 } \ 162 } 163 164 /* Similar to WAIT, except we use the udelay call to regulate the 165 amount of time we wait. */ 166 #define WAITd(port, mask, allof, noneof, timeout) \ 167 { register int WAITbits; \ 168 register int WAITtimeout = timeout; \ 169 while (1) { \ 170 WAITbits = inb(port) & (mask); \ 171 if ((WAITbits & (allof)) == (allof) && ((WAITbits & (noneof)) == 0)) \ 172 break; \ 173 mdelay(1); \ 174 if (--WAITtimeout == 0) goto fail; \ 175 } \ 176 } 177 178 static void aha1542_stat(void) 179 { 180 /* int s = inb(STATUS), i = inb(INTRFLAGS); 181 printk("status=%x intrflags=%x\n", s, i, WAITnexttimeout-WAITtimeout); */ 182 } 183 184 /* This is a bit complicated, but we need to make sure that an interrupt 185 routine does not send something out while we are in the middle of this. 186 Fortunately, it is only at boot time that multi-byte messages 187 are ever sent. */ 188 static int aha1542_out(unsigned int base, unchar * cmdp, int len) 189 { 190 unsigned long flags = 0; 191 int got_lock; 192 193 if (len == 1) { 194 got_lock = 0; 195 while (1 == 1) { 196 WAIT(STATUS(base), CDF, 0, CDF); 197 spin_lock_irqsave(&aha1542_lock, flags); 198 if (inb(STATUS(base)) & CDF) { 199 spin_unlock_irqrestore(&aha1542_lock, flags); 200 continue; 201 } 202 outb(*cmdp, DATA(base)); 203 spin_unlock_irqrestore(&aha1542_lock, flags); 204 return 0; 205 } 206 } else { 207 spin_lock_irqsave(&aha1542_lock, flags); 208 got_lock = 1; 209 while (len--) { 210 WAIT(STATUS(base), CDF, 0, CDF); 211 outb(*cmdp++, DATA(base)); 212 } 213 spin_unlock_irqrestore(&aha1542_lock, flags); 214 } 215 return 0; 216 fail: 217 if (got_lock) 218 spin_unlock_irqrestore(&aha1542_lock, flags); 219 printk(KERN_ERR "aha1542_out failed(%d): ", len + 1); 220 aha1542_stat(); 221 return 1; 222 } 223 224 /* Only used at boot time, so we do not need to worry about latency as much 225 here */ 226 227 static int __init aha1542_in(unsigned int base, unchar * cmdp, int len) 228 { 229 unsigned long flags; 230 231 spin_lock_irqsave(&aha1542_lock, flags); 232 while (len--) { 233 WAIT(STATUS(base), DF, DF, 0); 234 *cmdp++ = inb(DATA(base)); 235 } 236 spin_unlock_irqrestore(&aha1542_lock, flags); 237 return 0; 238 fail: 239 spin_unlock_irqrestore(&aha1542_lock, flags); 240 printk(KERN_ERR "aha1542_in failed(%d): ", len + 1); 241 aha1542_stat(); 242 return 1; 243 } 244 245 /* Similar to aha1542_in, except that we wait a very short period of time. 246 We use this if we know the board is alive and awake, but we are not sure 247 if the board will respond to the command we are about to send or not */ 248 static int __init aha1542_in1(unsigned int base, unchar * cmdp, int len) 249 { 250 unsigned long flags; 251 252 spin_lock_irqsave(&aha1542_lock, flags); 253 while (len--) { 254 WAITd(STATUS(base), DF, DF, 0, 100); 255 *cmdp++ = inb(DATA(base)); 256 } 257 spin_unlock_irqrestore(&aha1542_lock, flags); 258 return 0; 259 fail: 260 spin_unlock_irqrestore(&aha1542_lock, flags); 261 return 1; 262 } 263 264 static int makecode(unsigned hosterr, unsigned scsierr) 265 { 266 switch (hosterr) { 267 case 0x0: 268 case 0xa: /* Linked command complete without error and linked normally */ 269 case 0xb: /* Linked command complete without error, interrupt generated */ 270 hosterr = 0; 271 break; 272 273 case 0x11: /* Selection time out-The initiator selection or target 274 reselection was not complete within the SCSI Time out period */ 275 hosterr = DID_TIME_OUT; 276 break; 277 278 case 0x12: /* Data overrun/underrun-The target attempted to transfer more data 279 than was allocated by the Data Length field or the sum of the 280 Scatter / Gather Data Length fields. */ 281 282 case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */ 283 284 case 0x15: /* MBO command was not 00, 01 or 02-The first byte of the CB was 285 invalid. This usually indicates a software failure. */ 286 287 case 0x16: /* Invalid CCB Operation Code-The first byte of the CCB was invalid. 288 This usually indicates a software failure. */ 289 290 case 0x17: /* Linked CCB does not have the same LUN-A subsequent CCB of a set 291 of linked CCB's does not specify the same logical unit number as 292 the first. */ 293 case 0x18: /* Invalid Target Direction received from Host-The direction of a 294 Target Mode CCB was invalid. */ 295 296 case 0x19: /* Duplicate CCB Received in Target Mode-More than once CCB was 297 received to service data transfer between the same target LUN 298 and initiator SCSI ID in the same direction. */ 299 300 case 0x1a: /* Invalid CCB or Segment List Parameter-A segment list with a zero 301 length segment or invalid segment list boundaries was received. 302 A CCB parameter was invalid. */ 303 DEB(printk("Aha1542: %x %x\n", hosterr, scsierr)); 304 hosterr = DID_ERROR; /* Couldn't find any better */ 305 break; 306 307 case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus 308 phase sequence was requested by the target. The host adapter 309 will generate a SCSI Reset Condition, notifying the host with 310 a SCRD interrupt */ 311 hosterr = DID_RESET; 312 break; 313 default: 314 printk(KERN_ERR "aha1542: makecode: unknown hoststatus %x\n", hosterr); 315 break; 316 } 317 return scsierr | (hosterr << 16); 318 } 319 320 static int __init aha1542_test_port(int bse, struct Scsi_Host *shpnt) 321 { 322 unchar inquiry_cmd[] = {CMD_INQUIRY}; 323 unchar inquiry_result[4]; 324 unchar *cmdp; 325 int len; 326 volatile int debug = 0; 327 328 /* Quick and dirty test for presence of the card. */ 329 if (inb(STATUS(bse)) == 0xff) 330 return 0; 331 332 /* Reset the adapter. I ought to make a hard reset, but it's not really necessary */ 333 334 /* DEB(printk("aha1542_test_port called \n")); */ 335 336 /* In case some other card was probing here, reset interrupts */ 337 aha1542_intr_reset(bse); /* reset interrupts, so they don't block */ 338 339 outb(SRST | IRST /*|SCRST */ , CONTROL(bse)); 340 341 mdelay(20); /* Wait a little bit for things to settle down. */ 342 343 debug = 1; 344 /* Expect INIT and IDLE, any of the others are bad */ 345 WAIT(STATUS(bse), STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); 346 347 debug = 2; 348 /* Shouldn't have generated any interrupts during reset */ 349 if (inb(INTRFLAGS(bse)) & INTRMASK) 350 goto fail; 351 352 353 /* Perform a host adapter inquiry instead so we do not need to set 354 up the mailboxes ahead of time */ 355 356 aha1542_out(bse, inquiry_cmd, 1); 357 358 debug = 3; 359 len = 4; 360 cmdp = &inquiry_result[0]; 361 362 while (len--) { 363 WAIT(STATUS(bse), DF, DF, 0); 364 *cmdp++ = inb(DATA(bse)); 365 } 366 367 debug = 8; 368 /* Reading port should reset DF */ 369 if (inb(STATUS(bse)) & DF) 370 goto fail; 371 372 debug = 9; 373 /* When HACC, command is completed, and we're though testing */ 374 WAIT(INTRFLAGS(bse), HACC, HACC, 0); 375 /* now initialize adapter */ 376 377 debug = 10; 378 /* Clear interrupts */ 379 outb(IRST, CONTROL(bse)); 380 381 debug = 11; 382 383 return debug; /* 1 = ok */ 384 fail: 385 return 0; /* 0 = not ok */ 386 } 387 388 /* A quick wrapper for do_aha1542_intr_handle to grab the spin lock */ 389 static irqreturn_t do_aha1542_intr_handle(int dummy, void *dev_id) 390 { 391 unsigned long flags; 392 struct Scsi_Host *shost = dev_id; 393 394 spin_lock_irqsave(shost->host_lock, flags); 395 aha1542_intr_handle(shost); 396 spin_unlock_irqrestore(shost->host_lock, flags); 397 return IRQ_HANDLED; 398 } 399 400 /* A "high" level interrupt handler */ 401 static void aha1542_intr_handle(struct Scsi_Host *shost) 402 { 403 void (*my_done) (Scsi_Cmnd *) = NULL; 404 int errstatus, mbi, mbo, mbistatus; 405 int number_serviced; 406 unsigned long flags; 407 Scsi_Cmnd *SCtmp; 408 int flag; 409 int needs_restart; 410 struct mailbox *mb; 411 struct ccb *ccb; 412 413 mb = HOSTDATA(shost)->mb; 414 ccb = HOSTDATA(shost)->ccb; 415 416 #ifdef DEBUG 417 { 418 flag = inb(INTRFLAGS(shost->io_port)); 419 printk(KERN_DEBUG "aha1542_intr_handle: "); 420 if (!(flag & ANYINTR)) 421 printk("no interrupt?"); 422 if (flag & MBIF) 423 printk("MBIF "); 424 if (flag & MBOA) 425 printk("MBOF "); 426 if (flag & HACC) 427 printk("HACC "); 428 if (flag & SCRD) 429 printk("SCRD "); 430 printk("status %02x\n", inb(STATUS(shost->io_port))); 431 }; 432 #endif 433 number_serviced = 0; 434 needs_restart = 0; 435 436 while (1 == 1) { 437 flag = inb(INTRFLAGS(shost->io_port)); 438 439 /* Check for unusual interrupts. If any of these happen, we should 440 probably do something special, but for now just printing a message 441 is sufficient. A SCSI reset detected is something that we really 442 need to deal with in some way. */ 443 if (flag & ~MBIF) { 444 if (flag & MBOA) 445 printk("MBOF "); 446 if (flag & HACC) 447 printk("HACC "); 448 if (flag & SCRD) { 449 needs_restart = 1; 450 printk("SCRD "); 451 } 452 } 453 aha1542_intr_reset(shost->io_port); 454 455 spin_lock_irqsave(&aha1542_lock, flags); 456 mbi = HOSTDATA(shost)->aha1542_last_mbi_used + 1; 457 if (mbi >= 2 * AHA1542_MAILBOXES) 458 mbi = AHA1542_MAILBOXES; 459 460 do { 461 if (mb[mbi].status != 0) 462 break; 463 mbi++; 464 if (mbi >= 2 * AHA1542_MAILBOXES) 465 mbi = AHA1542_MAILBOXES; 466 } while (mbi != HOSTDATA(shost)->aha1542_last_mbi_used); 467 468 if (mb[mbi].status == 0) { 469 spin_unlock_irqrestore(&aha1542_lock, flags); 470 /* Hmm, no mail. Must have read it the last time around */ 471 if (!number_serviced && !needs_restart) 472 printk(KERN_WARNING "aha1542.c: interrupt received, but no mail.\n"); 473 /* We detected a reset. Restart all pending commands for 474 devices that use the hard reset option */ 475 if (needs_restart) 476 aha1542_restart(shost); 477 return; 478 }; 479 480 mbo = (scsi2int(mb[mbi].ccbptr) - (SCSI_BUF_PA(&ccb[0]))) / sizeof(struct ccb); 481 mbistatus = mb[mbi].status; 482 mb[mbi].status = 0; 483 HOSTDATA(shost)->aha1542_last_mbi_used = mbi; 484 spin_unlock_irqrestore(&aha1542_lock, flags); 485 486 #ifdef DEBUG 487 { 488 if (ccb[mbo].tarstat | ccb[mbo].hastat) 489 printk(KERN_DEBUG "aha1542_command: returning %x (status %d)\n", 490 ccb[mbo].tarstat + ((int) ccb[mbo].hastat << 16), mb[mbi].status); 491 }; 492 #endif 493 494 if (mbistatus == 3) 495 continue; /* Aborted command not found */ 496 497 #ifdef DEBUG 498 printk(KERN_DEBUG "...done %d %d\n", mbo, mbi); 499 #endif 500 501 SCtmp = HOSTDATA(shost)->SCint[mbo]; 502 503 if (!SCtmp || !SCtmp->scsi_done) { 504 printk(KERN_WARNING "aha1542_intr_handle: Unexpected interrupt\n"); 505 printk(KERN_WARNING "tarstat=%x, hastat=%x idlun=%x ccb#=%d \n", ccb[mbo].tarstat, 506 ccb[mbo].hastat, ccb[mbo].idlun, mbo); 507 return; 508 } 509 my_done = SCtmp->scsi_done; 510 kfree(SCtmp->host_scribble); 511 SCtmp->host_scribble = NULL; 512 /* Fetch the sense data, and tuck it away, in the required slot. The 513 Adaptec automatically fetches it, and there is no guarantee that 514 we will still have it in the cdb when we come back */ 515 if (ccb[mbo].tarstat == 2) 516 memcpy(SCtmp->sense_buffer, &ccb[mbo].cdb[ccb[mbo].cdblen], 517 SCSI_SENSE_BUFFERSIZE); 518 519 520 /* is there mail :-) */ 521 522 /* more error checking left out here */ 523 if (mbistatus != 1) 524 /* This is surely wrong, but I don't know what's right */ 525 errstatus = makecode(ccb[mbo].hastat, ccb[mbo].tarstat); 526 else 527 errstatus = 0; 528 529 #ifdef DEBUG 530 if (errstatus) 531 printk(KERN_DEBUG "(aha1542 error:%x %x %x) ", errstatus, 532 ccb[mbo].hastat, ccb[mbo].tarstat); 533 #endif 534 535 if (ccb[mbo].tarstat == 2) { 536 #ifdef DEBUG 537 int i; 538 #endif 539 DEB(printk("aha1542_intr_handle: sense:")); 540 #ifdef DEBUG 541 for (i = 0; i < 12; i++) 542 printk("%02x ", ccb[mbo].cdb[ccb[mbo].cdblen + i]); 543 printk("\n"); 544 #endif 545 /* 546 DEB(printk("aha1542_intr_handle: buf:")); 547 for (i = 0; i < bufflen; i++) 548 printk("%02x ", ((unchar *)buff)[i]); 549 printk("\n"); 550 */ 551 } 552 DEB(if (errstatus) printk("aha1542_intr_handle: returning %6x\n", errstatus)); 553 SCtmp->result = errstatus; 554 HOSTDATA(shost)->SCint[mbo] = NULL; /* This effectively frees up the mailbox slot, as 555 far as queuecommand is concerned */ 556 my_done(SCtmp); 557 number_serviced++; 558 }; 559 } 560 561 static int aha1542_queuecommand_lck(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *)) 562 { 563 unchar ahacmd = CMD_START_SCSI; 564 unchar direction; 565 unchar *cmd = (unchar *) SCpnt->cmnd; 566 unchar target = SCpnt->device->id; 567 unchar lun = SCpnt->device->lun; 568 unsigned long flags; 569 int bufflen = scsi_bufflen(SCpnt); 570 int mbo; 571 struct mailbox *mb; 572 struct ccb *ccb; 573 574 DEB(int i); 575 576 mb = HOSTDATA(SCpnt->device->host)->mb; 577 ccb = HOSTDATA(SCpnt->device->host)->ccb; 578 579 DEB(if (target > 1) { 580 SCpnt->result = DID_TIME_OUT << 16; 581 done(SCpnt); return 0; 582 } 583 ); 584 585 if (*cmd == REQUEST_SENSE) { 586 /* Don't do the command - we have the sense data already */ 587 #if 0 588 /* scsi_request_sense() provides a buffer of size 256, 589 so there is no reason to expect equality */ 590 if (bufflen != SCSI_SENSE_BUFFERSIZE) 591 printk(KERN_CRIT "aha1542: Wrong buffer length supplied " 592 "for request sense (%d)\n", bufflen); 593 #endif 594 SCpnt->result = 0; 595 done(SCpnt); 596 return 0; 597 } 598 #ifdef DEBUG 599 if (*cmd == READ_10 || *cmd == WRITE_10) 600 i = xscsi2int(cmd + 2); 601 else if (*cmd == READ_6 || *cmd == WRITE_6) 602 i = scsi2int(cmd + 2); 603 else 604 i = -1; 605 if (done) 606 printk(KERN_DEBUG "aha1542_queuecommand: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen); 607 else 608 printk(KERN_DEBUG "aha1542_command: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen); 609 aha1542_stat(); 610 printk(KERN_DEBUG "aha1542_queuecommand: dumping scsi cmd:"); 611 for (i = 0; i < SCpnt->cmd_len; i++) 612 printk("%02x ", cmd[i]); 613 printk("\n"); 614 if (*cmd == WRITE_10 || *cmd == WRITE_6) 615 return 0; /* we are still testing, so *don't* write */ 616 #endif 617 /* Use the outgoing mailboxes in a round-robin fashion, because this 618 is how the host adapter will scan for them */ 619 620 spin_lock_irqsave(&aha1542_lock, flags); 621 mbo = HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used + 1; 622 if (mbo >= AHA1542_MAILBOXES) 623 mbo = 0; 624 625 do { 626 if (mb[mbo].status == 0 && HOSTDATA(SCpnt->device->host)->SCint[mbo] == NULL) 627 break; 628 mbo++; 629 if (mbo >= AHA1542_MAILBOXES) 630 mbo = 0; 631 } while (mbo != HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used); 632 633 if (mb[mbo].status || HOSTDATA(SCpnt->device->host)->SCint[mbo]) 634 panic("Unable to find empty mailbox for aha1542.\n"); 635 636 HOSTDATA(SCpnt->device->host)->SCint[mbo] = SCpnt; /* This will effectively prevent someone else from 637 screwing with this cdb. */ 638 639 HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used = mbo; 640 spin_unlock_irqrestore(&aha1542_lock, flags); 641 642 #ifdef DEBUG 643 printk(KERN_DEBUG "Sending command (%d %x)...", mbo, done); 644 #endif 645 646 any2scsi(mb[mbo].ccbptr, SCSI_BUF_PA(&ccb[mbo])); /* This gets trashed for some reason */ 647 648 memset(&ccb[mbo], 0, sizeof(struct ccb)); 649 650 ccb[mbo].cdblen = SCpnt->cmd_len; 651 652 direction = 0; 653 if (*cmd == READ_10 || *cmd == READ_6) 654 direction = 8; 655 else if (*cmd == WRITE_10 || *cmd == WRITE_6) 656 direction = 16; 657 658 memcpy(ccb[mbo].cdb, cmd, ccb[mbo].cdblen); 659 660 if (bufflen) { 661 struct scatterlist *sg; 662 struct chain *cptr; 663 #ifdef DEBUG 664 unsigned char *ptr; 665 #endif 666 int i, sg_count = scsi_sg_count(SCpnt); 667 ccb[mbo].op = 2; /* SCSI Initiator Command w/scatter-gather */ 668 SCpnt->host_scribble = kmalloc(sizeof(*cptr)*sg_count, 669 GFP_KERNEL | GFP_DMA); 670 cptr = (struct chain *) SCpnt->host_scribble; 671 if (cptr == NULL) { 672 /* free the claimed mailbox slot */ 673 HOSTDATA(SCpnt->device->host)->SCint[mbo] = NULL; 674 return SCSI_MLQUEUE_HOST_BUSY; 675 } 676 scsi_for_each_sg(SCpnt, sg, sg_count, i) { 677 any2scsi(cptr[i].dataptr, SCSI_SG_PA(sg)); 678 any2scsi(cptr[i].datalen, sg->length); 679 }; 680 any2scsi(ccb[mbo].datalen, sg_count * sizeof(struct chain)); 681 any2scsi(ccb[mbo].dataptr, SCSI_BUF_PA(cptr)); 682 #ifdef DEBUG 683 printk("cptr %x: ", cptr); 684 ptr = (unsigned char *) cptr; 685 for (i = 0; i < 18; i++) 686 printk("%02x ", ptr[i]); 687 #endif 688 } else { 689 ccb[mbo].op = 0; /* SCSI Initiator Command */ 690 SCpnt->host_scribble = NULL; 691 any2scsi(ccb[mbo].datalen, 0); 692 any2scsi(ccb[mbo].dataptr, 0); 693 }; 694 ccb[mbo].idlun = (target & 7) << 5 | direction | (lun & 7); /*SCSI Target Id */ 695 ccb[mbo].rsalen = 16; 696 ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; 697 ccb[mbo].commlinkid = 0; 698 699 #ifdef DEBUG 700 { 701 int i; 702 printk(KERN_DEBUG "aha1542_command: sending.. "); 703 for (i = 0; i < sizeof(ccb[mbo]) - 10; i++) 704 printk("%02x ", ((unchar *) & ccb[mbo])[i]); 705 }; 706 #endif 707 708 if (done) { 709 DEB(printk("aha1542_queuecommand: now waiting for interrupt "); 710 aha1542_stat()); 711 SCpnt->scsi_done = done; 712 mb[mbo].status = 1; 713 aha1542_out(SCpnt->device->host->io_port, &ahacmd, 1); /* start scsi command */ 714 DEB(aha1542_stat()); 715 } else 716 printk("aha1542_queuecommand: done can't be NULL\n"); 717 718 return 0; 719 } 720 721 static DEF_SCSI_QCMD(aha1542_queuecommand) 722 723 /* Initialize mailboxes */ 724 static void setup_mailboxes(int bse, struct Scsi_Host *shpnt) 725 { 726 int i; 727 struct mailbox *mb; 728 struct ccb *ccb; 729 730 unchar cmd[5] = { CMD_MBINIT, AHA1542_MAILBOXES, 0, 0, 0}; 731 732 mb = HOSTDATA(shpnt)->mb; 733 ccb = HOSTDATA(shpnt)->ccb; 734 735 for (i = 0; i < AHA1542_MAILBOXES; i++) { 736 mb[i].status = mb[AHA1542_MAILBOXES + i].status = 0; 737 any2scsi(mb[i].ccbptr, SCSI_BUF_PA(&ccb[i])); 738 }; 739 aha1542_intr_reset(bse); /* reset interrupts, so they don't block */ 740 any2scsi((cmd + 2), SCSI_BUF_PA(mb)); 741 aha1542_out(bse, cmd, 5); 742 WAIT(INTRFLAGS(bse), INTRMASK, HACC, 0); 743 while (0) { 744 fail: 745 printk(KERN_ERR "aha1542_detect: failed setting up mailboxes\n"); 746 } 747 aha1542_intr_reset(bse); 748 } 749 750 static int __init aha1542_getconfig(int base_io, unsigned char *irq_level, unsigned char *dma_chan, unsigned char *scsi_id) 751 { 752 unchar inquiry_cmd[] = {CMD_RETCONF}; 753 unchar inquiry_result[3]; 754 int i; 755 i = inb(STATUS(base_io)); 756 if (i & DF) { 757 i = inb(DATA(base_io)); 758 }; 759 aha1542_out(base_io, inquiry_cmd, 1); 760 aha1542_in(base_io, inquiry_result, 3); 761 WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); 762 while (0) { 763 fail: 764 printk(KERN_ERR "aha1542_detect: query board settings\n"); 765 } 766 aha1542_intr_reset(base_io); 767 switch (inquiry_result[0]) { 768 case 0x80: 769 *dma_chan = 7; 770 break; 771 case 0x40: 772 *dma_chan = 6; 773 break; 774 case 0x20: 775 *dma_chan = 5; 776 break; 777 case 0x01: 778 *dma_chan = 0; 779 break; 780 case 0: 781 /* This means that the adapter, although Adaptec 1542 compatible, doesn't use a DMA channel. 782 Currently only aware of the BusLogic BT-445S VL-Bus adapter which needs this. */ 783 *dma_chan = 0xFF; 784 break; 785 default: 786 printk(KERN_ERR "Unable to determine Adaptec DMA priority. Disabling board\n"); 787 return -1; 788 }; 789 switch (inquiry_result[1]) { 790 case 0x40: 791 *irq_level = 15; 792 break; 793 case 0x20: 794 *irq_level = 14; 795 break; 796 case 0x8: 797 *irq_level = 12; 798 break; 799 case 0x4: 800 *irq_level = 11; 801 break; 802 case 0x2: 803 *irq_level = 10; 804 break; 805 case 0x1: 806 *irq_level = 9; 807 break; 808 default: 809 printk(KERN_ERR "Unable to determine Adaptec IRQ level. Disabling board\n"); 810 return -1; 811 }; 812 *scsi_id = inquiry_result[2] & 7; 813 return 0; 814 } 815 816 /* This function should only be called for 1542C boards - we can detect 817 the special firmware settings and unlock the board */ 818 819 static int __init aha1542_mbenable(int base) 820 { 821 static unchar mbenable_cmd[3]; 822 static unchar mbenable_result[2]; 823 int retval; 824 825 retval = BIOS_TRANSLATION_6432; 826 827 mbenable_cmd[0] = CMD_EXTBIOS; 828 aha1542_out(base, mbenable_cmd, 1); 829 if (aha1542_in1(base, mbenable_result, 2)) 830 return retval; 831 WAITd(INTRFLAGS(base), INTRMASK, HACC, 0, 100); 832 aha1542_intr_reset(base); 833 834 if ((mbenable_result[0] & 0x08) || mbenable_result[1]) { 835 mbenable_cmd[0] = CMD_MBENABLE; 836 mbenable_cmd[1] = 0; 837 mbenable_cmd[2] = mbenable_result[1]; 838 839 if ((mbenable_result[0] & 0x08) && (mbenable_result[1] & 0x03)) 840 retval = BIOS_TRANSLATION_25563; 841 842 aha1542_out(base, mbenable_cmd, 3); 843 WAIT(INTRFLAGS(base), INTRMASK, HACC, 0); 844 }; 845 while (0) { 846 fail: 847 printk(KERN_ERR "aha1542_mbenable: Mailbox init failed\n"); 848 } 849 aha1542_intr_reset(base); 850 return retval; 851 } 852 853 /* Query the board to find out if it is a 1542 or a 1740, or whatever. */ 854 static int __init aha1542_query(int base_io, int *transl) 855 { 856 unchar inquiry_cmd[] = {CMD_INQUIRY}; 857 unchar inquiry_result[4]; 858 int i; 859 i = inb(STATUS(base_io)); 860 if (i & DF) { 861 i = inb(DATA(base_io)); 862 }; 863 aha1542_out(base_io, inquiry_cmd, 1); 864 aha1542_in(base_io, inquiry_result, 4); 865 WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); 866 while (0) { 867 fail: 868 printk(KERN_ERR "aha1542_detect: query card type\n"); 869 } 870 aha1542_intr_reset(base_io); 871 872 *transl = BIOS_TRANSLATION_6432; /* Default case */ 873 874 /* For an AHA1740 series board, we ignore the board since there is a 875 hardware bug which can lead to wrong blocks being returned if the board 876 is operating in the 1542 emulation mode. Since there is an extended mode 877 driver, we simply ignore the board and let the 1740 driver pick it up. 878 */ 879 880 if (inquiry_result[0] == 0x43) { 881 printk(KERN_INFO "aha1542.c: Emulation mode not supported for AHA 174N hardware.\n"); 882 return 1; 883 }; 884 885 /* Always call this - boards that do not support extended bios translation 886 will ignore the command, and we will set the proper default */ 887 888 *transl = aha1542_mbenable(base_io); 889 890 return 0; 891 } 892 893 #ifndef MODULE 894 static char *setup_str[MAXBOARDS] __initdata; 895 static int setup_idx = 0; 896 897 static void __init aha1542_setup(char *str, int *ints) 898 { 899 const char *ahausage = "aha1542: usage: aha1542=<PORTBASE>[,<BUSON>,<BUSOFF>[,<DMASPEED>]]\n"; 900 int setup_portbase; 901 902 if (setup_idx >= MAXBOARDS) { 903 printk(KERN_ERR "aha1542: aha1542_setup called too many times! Bad LILO params ?\n"); 904 printk(KERN_ERR " Entryline 1: %s\n", setup_str[0]); 905 printk(KERN_ERR " Entryline 2: %s\n", setup_str[1]); 906 printk(KERN_ERR " This line: %s\n", str); 907 return; 908 } 909 if (ints[0] < 1 || ints[0] > 4) { 910 printk(KERN_ERR "aha1542: %s\n", str); 911 printk(ahausage); 912 printk(KERN_ERR "aha1542: Wrong parameters may cause system malfunction.. We try anyway..\n"); 913 } 914 setup_called[setup_idx] = ints[0]; 915 setup_str[setup_idx] = str; 916 917 setup_portbase = ints[0] >= 1 ? ints[1] : 0; /* Preserve the default value.. */ 918 setup_buson[setup_idx] = ints[0] >= 2 ? ints[2] : 7; 919 setup_busoff[setup_idx] = ints[0] >= 3 ? ints[3] : 5; 920 if (ints[0] >= 4) 921 { 922 int atbt = -1; 923 switch (ints[4]) { 924 case 5: 925 atbt = 0x00; 926 break; 927 case 6: 928 atbt = 0x04; 929 break; 930 case 7: 931 atbt = 0x01; 932 break; 933 case 8: 934 atbt = 0x02; 935 break; 936 case 10: 937 atbt = 0x03; 938 break; 939 default: 940 printk(KERN_ERR "aha1542: %s\n", str); 941 printk(ahausage); 942 printk(KERN_ERR "aha1542: Valid values for DMASPEED are 5-8, 10 MB/s. Using jumper defaults.\n"); 943 break; 944 } 945 setup_dmaspeed[setup_idx] = atbt; 946 } 947 if (setup_portbase != 0) 948 bases[setup_idx] = setup_portbase; 949 950 ++setup_idx; 951 } 952 953 static int __init do_setup(char *str) 954 { 955 int ints[5]; 956 957 int count=setup_idx; 958 959 get_options(str, ARRAY_SIZE(ints), ints); 960 aha1542_setup(str,ints); 961 962 return count<setup_idx; 963 } 964 965 __setup("aha1542=",do_setup); 966 #endif 967 968 /* return non-zero on detection */ 969 static int __init aha1542_detect(struct scsi_host_template * tpnt) 970 { 971 unsigned char dma_chan; 972 unsigned char irq_level; 973 unsigned char scsi_id; 974 unsigned long flags; 975 unsigned int base_io; 976 int trans; 977 struct Scsi_Host *shpnt = NULL; 978 int count = 0; 979 int indx; 980 981 DEB(printk("aha1542_detect: \n")); 982 983 tpnt->proc_name = "aha1542"; 984 985 #ifdef MODULE 986 bases[0] = aha1542[0]; 987 setup_buson[0] = aha1542[1]; 988 setup_busoff[0] = aha1542[2]; 989 { 990 int atbt = -1; 991 switch (aha1542[3]) { 992 case 5: 993 atbt = 0x00; 994 break; 995 case 6: 996 atbt = 0x04; 997 break; 998 case 7: 999 atbt = 0x01; 1000 break; 1001 case 8: 1002 atbt = 0x02; 1003 break; 1004 case 10: 1005 atbt = 0x03; 1006 break; 1007 }; 1008 setup_dmaspeed[0] = atbt; 1009 } 1010 #endif 1011 1012 /* 1013 * Find MicroChannel cards (AHA1640) 1014 */ 1015 #ifdef CONFIG_MCA_LEGACY 1016 if(MCA_bus) { 1017 int slot = 0; 1018 int pos = 0; 1019 1020 for (indx = 0; (slot != MCA_NOTFOUND) && (indx < ARRAY_SIZE(bases)); indx++) { 1021 1022 if (bases[indx]) 1023 continue; 1024 1025 /* Detect only AHA-1640 cards -- MCA ID 0F1F */ 1026 slot = mca_find_unused_adapter(0x0f1f, slot); 1027 if (slot == MCA_NOTFOUND) 1028 break; 1029 1030 /* Found one */ 1031 pos = mca_read_stored_pos(slot, 3); 1032 1033 /* Decode address */ 1034 if (pos & 0x80) { 1035 if (pos & 0x02) { 1036 if (pos & 0x01) 1037 bases[indx] = 0x334; 1038 else 1039 bases[indx] = 0x234; 1040 } else { 1041 if (pos & 0x01) 1042 bases[indx] = 0x134; 1043 } 1044 } else { 1045 if (pos & 0x02) { 1046 if (pos & 0x01) 1047 bases[indx] = 0x330; 1048 else 1049 bases[indx] = 0x230; 1050 } else { 1051 if (pos & 0x01) 1052 bases[indx] = 0x130; 1053 } 1054 } 1055 1056 /* No need to decode IRQ and Arb level -- those are 1057 * read off the card later. 1058 */ 1059 printk(KERN_INFO "Found an AHA-1640 in MCA slot %d, I/O 0x%04x\n", slot, bases[indx]); 1060 1061 mca_set_adapter_name(slot, "Adapter AHA-1640"); 1062 mca_set_adapter_procfn(slot, NULL, NULL); 1063 mca_mark_as_used(slot); 1064 1065 /* Go on */ 1066 slot++; 1067 } 1068 1069 } 1070 #endif 1071 1072 /* 1073 * Hunt for ISA Plug'n'Pray Adaptecs (AHA1535) 1074 */ 1075 1076 if(isapnp) 1077 { 1078 struct pnp_dev *pdev = NULL; 1079 for(indx = 0; indx < ARRAY_SIZE(bases); indx++) { 1080 if(bases[indx]) 1081 continue; 1082 pdev = pnp_find_dev(NULL, ISAPNP_VENDOR('A', 'D', 'P'), 1083 ISAPNP_FUNCTION(0x1542), pdev); 1084 if(pdev==NULL) 1085 break; 1086 /* 1087 * Activate the PnP card 1088 */ 1089 1090 if(pnp_device_attach(pdev)<0) 1091 continue; 1092 1093 if(pnp_activate_dev(pdev)<0) { 1094 pnp_device_detach(pdev); 1095 continue; 1096 } 1097 1098 if(!pnp_port_valid(pdev, 0)) { 1099 pnp_device_detach(pdev); 1100 continue; 1101 } 1102 1103 bases[indx] = pnp_port_start(pdev, 0); 1104 1105 /* The card can be queried for its DMA, we have 1106 the DMA set up that is enough */ 1107 1108 printk(KERN_INFO "ISAPnP found an AHA1535 at I/O 0x%03X\n", bases[indx]); 1109 } 1110 } 1111 for (indx = 0; indx < ARRAY_SIZE(bases); indx++) 1112 if (bases[indx] != 0 && request_region(bases[indx], 4, "aha1542")) { 1113 shpnt = scsi_register(tpnt, 1114 sizeof(struct aha1542_hostdata)); 1115 1116 if(shpnt==NULL) { 1117 release_region(bases[indx], 4); 1118 continue; 1119 } 1120 if (!aha1542_test_port(bases[indx], shpnt)) 1121 goto unregister; 1122 1123 base_io = bases[indx]; 1124 1125 /* Set the Bus on/off-times as not to ruin floppy performance */ 1126 { 1127 unchar oncmd[] = {CMD_BUSON_TIME, 7}; 1128 unchar offcmd[] = {CMD_BUSOFF_TIME, 5}; 1129 1130 if (setup_called[indx]) { 1131 oncmd[1] = setup_buson[indx]; 1132 offcmd[1] = setup_busoff[indx]; 1133 } 1134 aha1542_intr_reset(base_io); 1135 aha1542_out(base_io, oncmd, 2); 1136 WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); 1137 aha1542_intr_reset(base_io); 1138 aha1542_out(base_io, offcmd, 2); 1139 WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); 1140 if (setup_dmaspeed[indx] >= 0) { 1141 unchar dmacmd[] = {CMD_DMASPEED, 0}; 1142 dmacmd[1] = setup_dmaspeed[indx]; 1143 aha1542_intr_reset(base_io); 1144 aha1542_out(base_io, dmacmd, 2); 1145 WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); 1146 } 1147 while (0) { 1148 fail: 1149 printk(KERN_ERR "aha1542_detect: setting bus on/off-time failed\n"); 1150 } 1151 aha1542_intr_reset(base_io); 1152 } 1153 if (aha1542_query(base_io, &trans)) 1154 goto unregister; 1155 1156 if (aha1542_getconfig(base_io, &irq_level, &dma_chan, &scsi_id) == -1) 1157 goto unregister; 1158 1159 printk(KERN_INFO "Configuring Adaptec (SCSI-ID %d) at IO:%x, IRQ %d", scsi_id, base_io, irq_level); 1160 if (dma_chan != 0xFF) 1161 printk(", DMA priority %d", dma_chan); 1162 printk("\n"); 1163 1164 DEB(aha1542_stat()); 1165 setup_mailboxes(base_io, shpnt); 1166 1167 DEB(aha1542_stat()); 1168 1169 DEB(printk("aha1542_detect: enable interrupt channel %d\n", irq_level)); 1170 spin_lock_irqsave(&aha1542_lock, flags); 1171 if (request_irq(irq_level, do_aha1542_intr_handle, 0, 1172 "aha1542", shpnt)) { 1173 printk(KERN_ERR "Unable to allocate IRQ for adaptec controller.\n"); 1174 spin_unlock_irqrestore(&aha1542_lock, flags); 1175 goto unregister; 1176 } 1177 if (dma_chan != 0xFF) { 1178 if (request_dma(dma_chan, "aha1542")) { 1179 printk(KERN_ERR "Unable to allocate DMA channel for Adaptec.\n"); 1180 free_irq(irq_level, shpnt); 1181 spin_unlock_irqrestore(&aha1542_lock, flags); 1182 goto unregister; 1183 } 1184 if (dma_chan == 0 || dma_chan >= 5) { 1185 set_dma_mode(dma_chan, DMA_MODE_CASCADE); 1186 enable_dma(dma_chan); 1187 } 1188 } 1189 1190 shpnt->this_id = scsi_id; 1191 shpnt->unique_id = base_io; 1192 shpnt->io_port = base_io; 1193 shpnt->n_io_port = 4; /* Number of bytes of I/O space used */ 1194 shpnt->dma_channel = dma_chan; 1195 shpnt->irq = irq_level; 1196 HOSTDATA(shpnt)->bios_translation = trans; 1197 if (trans == BIOS_TRANSLATION_25563) 1198 printk(KERN_INFO "aha1542.c: Using extended bios translation\n"); 1199 HOSTDATA(shpnt)->aha1542_last_mbi_used = (2 * AHA1542_MAILBOXES - 1); 1200 HOSTDATA(shpnt)->aha1542_last_mbo_used = (AHA1542_MAILBOXES - 1); 1201 memset(HOSTDATA(shpnt)->SCint, 0, sizeof(HOSTDATA(shpnt)->SCint)); 1202 spin_unlock_irqrestore(&aha1542_lock, flags); 1203 #if 0 1204 DEB(printk(" *** READ CAPACITY ***\n")); 1205 1206 { 1207 unchar buf[8]; 1208 static unchar cmd[] = { READ_CAPACITY, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; 1209 int i; 1210 1211 for (i = 0; i < sizeof(buf); ++i) 1212 buf[i] = 0x87; 1213 for (i = 0; i < 2; ++i) 1214 if (!aha1542_command(i, cmd, buf, sizeof(buf))) { 1215 printk(KERN_DEBUG "aha_detect: LU %d sector_size %d device_size %d\n", 1216 i, xscsi2int(buf + 4), xscsi2int(buf)); 1217 } 1218 } 1219 1220 DEB(printk(" *** NOW RUNNING MY OWN TEST *** \n")); 1221 1222 for (i = 0; i < 4; ++i) { 1223 unsigned char cmd[10]; 1224 static buffer[512]; 1225 1226 cmd[0] = READ_10; 1227 cmd[1] = 0; 1228 xany2scsi(cmd + 2, i); 1229 cmd[6] = 0; 1230 cmd[7] = 0; 1231 cmd[8] = 1; 1232 cmd[9] = 0; 1233 aha1542_command(0, cmd, buffer, 512); 1234 } 1235 #endif 1236 count++; 1237 continue; 1238 unregister: 1239 release_region(bases[indx], 4); 1240 scsi_unregister(shpnt); 1241 continue; 1242 1243 }; 1244 1245 return count; 1246 } 1247 1248 static int aha1542_release(struct Scsi_Host *shost) 1249 { 1250 if (shost->irq) 1251 free_irq(shost->irq, shost); 1252 if (shost->dma_channel != 0xff) 1253 free_dma(shost->dma_channel); 1254 if (shost->io_port && shost->n_io_port) 1255 release_region(shost->io_port, shost->n_io_port); 1256 scsi_unregister(shost); 1257 return 0; 1258 } 1259 1260 static int aha1542_restart(struct Scsi_Host *shost) 1261 { 1262 int i; 1263 int count = 0; 1264 #if 0 1265 unchar ahacmd = CMD_START_SCSI; 1266 #endif 1267 1268 for (i = 0; i < AHA1542_MAILBOXES; i++) 1269 if (HOSTDATA(shost)->SCint[i] && 1270 !(HOSTDATA(shost)->SCint[i]->device->soft_reset)) { 1271 #if 0 1272 HOSTDATA(shost)->mb[i].status = 1; /* Indicate ready to restart... */ 1273 #endif 1274 count++; 1275 } 1276 printk(KERN_DEBUG "Potential to restart %d stalled commands...\n", count); 1277 #if 0 1278 /* start scsi command */ 1279 if (count) 1280 aha1542_out(shost->io_port, &ahacmd, 1); 1281 #endif 1282 return 0; 1283 } 1284 1285 /* 1286 * This is a device reset. This is handled by sending a special command 1287 * to the device. 1288 */ 1289 static int aha1542_dev_reset(Scsi_Cmnd * SCpnt) 1290 { 1291 unsigned long flags; 1292 struct mailbox *mb; 1293 unchar target = SCpnt->device->id; 1294 unchar lun = SCpnt->device->lun; 1295 int mbo; 1296 struct ccb *ccb; 1297 unchar ahacmd = CMD_START_SCSI; 1298 1299 ccb = HOSTDATA(SCpnt->device->host)->ccb; 1300 mb = HOSTDATA(SCpnt->device->host)->mb; 1301 1302 spin_lock_irqsave(&aha1542_lock, flags); 1303 mbo = HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used + 1; 1304 if (mbo >= AHA1542_MAILBOXES) 1305 mbo = 0; 1306 1307 do { 1308 if (mb[mbo].status == 0 && HOSTDATA(SCpnt->device->host)->SCint[mbo] == NULL) 1309 break; 1310 mbo++; 1311 if (mbo >= AHA1542_MAILBOXES) 1312 mbo = 0; 1313 } while (mbo != HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used); 1314 1315 if (mb[mbo].status || HOSTDATA(SCpnt->device->host)->SCint[mbo]) 1316 panic("Unable to find empty mailbox for aha1542.\n"); 1317 1318 HOSTDATA(SCpnt->device->host)->SCint[mbo] = SCpnt; /* This will effectively 1319 prevent someone else from 1320 screwing with this cdb. */ 1321 1322 HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used = mbo; 1323 spin_unlock_irqrestore(&aha1542_lock, flags); 1324 1325 any2scsi(mb[mbo].ccbptr, SCSI_BUF_PA(&ccb[mbo])); /* This gets trashed for some reason */ 1326 1327 memset(&ccb[mbo], 0, sizeof(struct ccb)); 1328 1329 ccb[mbo].op = 0x81; /* BUS DEVICE RESET */ 1330 1331 ccb[mbo].idlun = (target & 7) << 5 | (lun & 7); /*SCSI Target Id */ 1332 1333 ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; 1334 ccb[mbo].commlinkid = 0; 1335 1336 /* 1337 * Now tell the 1542 to flush all pending commands for this 1338 * target 1339 */ 1340 aha1542_out(SCpnt->device->host->io_port, &ahacmd, 1); 1341 1342 scmd_printk(KERN_WARNING, SCpnt, 1343 "Trying device reset for target\n"); 1344 1345 return SUCCESS; 1346 1347 1348 #ifdef ERIC_neverdef 1349 /* 1350 * With the 1542 we apparently never get an interrupt to 1351 * acknowledge a device reset being sent. Then again, Leonard 1352 * says we are doing this wrong in the first place... 1353 * 1354 * Take a wait and see attitude. If we get spurious interrupts, 1355 * then the device reset is doing something sane and useful, and 1356 * we will wait for the interrupt to post completion. 1357 */ 1358 printk(KERN_WARNING "Sent BUS DEVICE RESET to target %d\n", SCpnt->target); 1359 1360 /* 1361 * Free the command block for all commands running on this 1362 * target... 1363 */ 1364 for (i = 0; i < AHA1542_MAILBOXES; i++) { 1365 if (HOSTDATA(SCpnt->host)->SCint[i] && 1366 HOSTDATA(SCpnt->host)->SCint[i]->target == SCpnt->target) { 1367 Scsi_Cmnd *SCtmp; 1368 SCtmp = HOSTDATA(SCpnt->host)->SCint[i]; 1369 kfree(SCtmp->host_scribble); 1370 SCtmp->host_scribble = NULL; 1371 HOSTDATA(SCpnt->host)->SCint[i] = NULL; 1372 HOSTDATA(SCpnt->host)->mb[i].status = 0; 1373 } 1374 } 1375 return SUCCESS; 1376 1377 return FAILED; 1378 #endif /* ERIC_neverdef */ 1379 } 1380 1381 static int aha1542_bus_reset(Scsi_Cmnd * SCpnt) 1382 { 1383 int i; 1384 1385 /* 1386 * This does a scsi reset for all devices on the bus. 1387 * In principle, we could also reset the 1542 - should 1388 * we do this? Try this first, and we can add that later 1389 * if it turns out to be useful. 1390 */ 1391 outb(SCRST, CONTROL(SCpnt->device->host->io_port)); 1392 1393 /* 1394 * Wait for the thing to settle down a bit. Unfortunately 1395 * this is going to basically lock up the machine while we 1396 * wait for this to complete. To be 100% correct, we need to 1397 * check for timeout, and if we are doing something like this 1398 * we are pretty desperate anyways. 1399 */ 1400 ssleep(4); 1401 1402 spin_lock_irq(SCpnt->device->host->host_lock); 1403 1404 WAIT(STATUS(SCpnt->device->host->io_port), 1405 STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); 1406 1407 /* 1408 * Now try to pick up the pieces. For all pending commands, 1409 * free any internal data structures, and basically clear things 1410 * out. We do not try and restart any commands or anything - 1411 * the strategy handler takes care of that crap. 1412 */ 1413 printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->device->host->host_no); 1414 1415 for (i = 0; i < AHA1542_MAILBOXES; i++) { 1416 if (HOSTDATA(SCpnt->device->host)->SCint[i] != NULL) { 1417 Scsi_Cmnd *SCtmp; 1418 SCtmp = HOSTDATA(SCpnt->device->host)->SCint[i]; 1419 1420 1421 if (SCtmp->device->soft_reset) { 1422 /* 1423 * If this device implements the soft reset option, 1424 * then it is still holding onto the command, and 1425 * may yet complete it. In this case, we don't 1426 * flush the data. 1427 */ 1428 continue; 1429 } 1430 kfree(SCtmp->host_scribble); 1431 SCtmp->host_scribble = NULL; 1432 HOSTDATA(SCpnt->device->host)->SCint[i] = NULL; 1433 HOSTDATA(SCpnt->device->host)->mb[i].status = 0; 1434 } 1435 } 1436 1437 spin_unlock_irq(SCpnt->device->host->host_lock); 1438 return SUCCESS; 1439 1440 fail: 1441 spin_unlock_irq(SCpnt->device->host->host_lock); 1442 return FAILED; 1443 } 1444 1445 static int aha1542_host_reset(Scsi_Cmnd * SCpnt) 1446 { 1447 int i; 1448 1449 /* 1450 * This does a scsi reset for all devices on the bus. 1451 * In principle, we could also reset the 1542 - should 1452 * we do this? Try this first, and we can add that later 1453 * if it turns out to be useful. 1454 */ 1455 outb(HRST | SCRST, CONTROL(SCpnt->device->host->io_port)); 1456 1457 /* 1458 * Wait for the thing to settle down a bit. Unfortunately 1459 * this is going to basically lock up the machine while we 1460 * wait for this to complete. To be 100% correct, we need to 1461 * check for timeout, and if we are doing something like this 1462 * we are pretty desperate anyways. 1463 */ 1464 ssleep(4); 1465 spin_lock_irq(SCpnt->device->host->host_lock); 1466 1467 WAIT(STATUS(SCpnt->device->host->io_port), 1468 STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); 1469 1470 /* 1471 * We need to do this too before the 1542 can interact with 1472 * us again. 1473 */ 1474 setup_mailboxes(SCpnt->device->host->io_port, SCpnt->device->host); 1475 1476 /* 1477 * Now try to pick up the pieces. For all pending commands, 1478 * free any internal data structures, and basically clear things 1479 * out. We do not try and restart any commands or anything - 1480 * the strategy handler takes care of that crap. 1481 */ 1482 printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->device->host->host_no); 1483 1484 for (i = 0; i < AHA1542_MAILBOXES; i++) { 1485 if (HOSTDATA(SCpnt->device->host)->SCint[i] != NULL) { 1486 Scsi_Cmnd *SCtmp; 1487 SCtmp = HOSTDATA(SCpnt->device->host)->SCint[i]; 1488 1489 if (SCtmp->device->soft_reset) { 1490 /* 1491 * If this device implements the soft reset option, 1492 * then it is still holding onto the command, and 1493 * may yet complete it. In this case, we don't 1494 * flush the data. 1495 */ 1496 continue; 1497 } 1498 kfree(SCtmp->host_scribble); 1499 SCtmp->host_scribble = NULL; 1500 HOSTDATA(SCpnt->device->host)->SCint[i] = NULL; 1501 HOSTDATA(SCpnt->device->host)->mb[i].status = 0; 1502 } 1503 } 1504 1505 spin_unlock_irq(SCpnt->device->host->host_lock); 1506 return SUCCESS; 1507 1508 fail: 1509 spin_unlock_irq(SCpnt->device->host->host_lock); 1510 return FAILED; 1511 } 1512 1513 #if 0 1514 /* 1515 * These are the old error handling routines. They are only temporarily 1516 * here while we play with the new error handling code. 1517 */ 1518 static int aha1542_old_abort(Scsi_Cmnd * SCpnt) 1519 { 1520 #if 0 1521 unchar ahacmd = CMD_START_SCSI; 1522 unsigned long flags; 1523 struct mailbox *mb; 1524 int mbi, mbo, i; 1525 1526 printk(KERN_DEBUG "In aha1542_abort: %x %x\n", 1527 inb(STATUS(SCpnt->host->io_port)), 1528 inb(INTRFLAGS(SCpnt->host->io_port))); 1529 1530 spin_lock_irqsave(&aha1542_lock, flags); 1531 mb = HOSTDATA(SCpnt->host)->mb; 1532 mbi = HOSTDATA(SCpnt->host)->aha1542_last_mbi_used + 1; 1533 if (mbi >= 2 * AHA1542_MAILBOXES) 1534 mbi = AHA1542_MAILBOXES; 1535 1536 do { 1537 if (mb[mbi].status != 0) 1538 break; 1539 mbi++; 1540 if (mbi >= 2 * AHA1542_MAILBOXES) 1541 mbi = AHA1542_MAILBOXES; 1542 } while (mbi != HOSTDATA(SCpnt->host)->aha1542_last_mbi_used); 1543 spin_unlock_irqrestore(&aha1542_lock, flags); 1544 1545 if (mb[mbi].status) { 1546 printk(KERN_ERR "Lost interrupt discovered on irq %d - attempting to recover\n", 1547 SCpnt->host->irq); 1548 aha1542_intr_handle(SCpnt->host, NULL); 1549 return 0; 1550 } 1551 /* OK, no lost interrupt. Try looking to see how many pending commands 1552 we think we have. */ 1553 1554 for (i = 0; i < AHA1542_MAILBOXES; i++) 1555 if (HOSTDATA(SCpnt->host)->SCint[i]) { 1556 if (HOSTDATA(SCpnt->host)->SCint[i] == SCpnt) { 1557 printk(KERN_ERR "Timed out command pending for %s\n", 1558 SCpnt->request->rq_disk ? 1559 SCpnt->request->rq_disk->disk_name : "?" 1560 ); 1561 if (HOSTDATA(SCpnt->host)->mb[i].status) { 1562 printk(KERN_ERR "OGMB still full - restarting\n"); 1563 aha1542_out(SCpnt->host->io_port, &ahacmd, 1); 1564 }; 1565 } else 1566 printk(KERN_ERR "Other pending command %s\n", 1567 SCpnt->request->rq_disk ? 1568 SCpnt->request->rq_disk->disk_name : "?" 1569 ); 1570 } 1571 #endif 1572 1573 DEB(printk("aha1542_abort\n")); 1574 #if 0 1575 spin_lock_irqsave(&aha1542_lock, flags); 1576 for (mbo = 0; mbo < AHA1542_MAILBOXES; mbo++) { 1577 if (SCpnt == HOSTDATA(SCpnt->host)->SCint[mbo]) { 1578 mb[mbo].status = 2; /* Abort command */ 1579 aha1542_out(SCpnt->host->io_port, &ahacmd, 1); /* start scsi command */ 1580 spin_unlock_irqrestore(&aha1542_lock, flags); 1581 break; 1582 } 1583 } 1584 if (AHA1542_MAILBOXES == mbo) 1585 spin_unlock_irqrestore(&aha1542_lock, flags); 1586 #endif 1587 return SCSI_ABORT_SNOOZE; 1588 } 1589 1590 /* We do not implement a reset function here, but the upper level code 1591 assumes that it will get some kind of response for the command in 1592 SCpnt. We must oblige, or the command will hang the scsi system. 1593 For a first go, we assume that the 1542 notifies us with all of the 1594 pending commands (it does implement soft reset, after all). */ 1595 1596 static int aha1542_old_reset(Scsi_Cmnd * SCpnt, unsigned int reset_flags) 1597 { 1598 unchar ahacmd = CMD_START_SCSI; 1599 int i; 1600 1601 /* 1602 * See if a bus reset was suggested. 1603 */ 1604 if (reset_flags & SCSI_RESET_SUGGEST_BUS_RESET) { 1605 /* 1606 * This does a scsi reset for all devices on the bus. 1607 * In principle, we could also reset the 1542 - should 1608 * we do this? Try this first, and we can add that later 1609 * if it turns out to be useful. 1610 */ 1611 outb(HRST | SCRST, CONTROL(SCpnt->host->io_port)); 1612 1613 /* 1614 * Wait for the thing to settle down a bit. Unfortunately 1615 * this is going to basically lock up the machine while we 1616 * wait for this to complete. To be 100% correct, we need to 1617 * check for timeout, and if we are doing something like this 1618 * we are pretty desperate anyways. 1619 */ 1620 WAIT(STATUS(SCpnt->host->io_port), 1621 STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); 1622 1623 /* 1624 * We need to do this too before the 1542 can interact with 1625 * us again. 1626 */ 1627 setup_mailboxes(SCpnt->host->io_port, SCpnt->host); 1628 1629 /* 1630 * Now try to pick up the pieces. Restart all commands 1631 * that are currently active on the bus, and reset all of 1632 * the datastructures. We have some time to kill while 1633 * things settle down, so print a nice message. 1634 */ 1635 printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->host->host_no); 1636 1637 for (i = 0; i < AHA1542_MAILBOXES; i++) 1638 if (HOSTDATA(SCpnt->host)->SCint[i] != NULL) { 1639 Scsi_Cmnd *SCtmp; 1640 SCtmp = HOSTDATA(SCpnt->host)->SCint[i]; 1641 SCtmp->result = DID_RESET << 16; 1642 kfree(SCtmp->host_scribble); 1643 SCtmp->host_scribble = NULL; 1644 printk(KERN_WARNING "Sending DID_RESET for target %d\n", SCpnt->target); 1645 SCtmp->scsi_done(SCpnt); 1646 1647 HOSTDATA(SCpnt->host)->SCint[i] = NULL; 1648 HOSTDATA(SCpnt->host)->mb[i].status = 0; 1649 } 1650 /* 1651 * Now tell the mid-level code what we did here. Since 1652 * we have restarted all of the outstanding commands, 1653 * then report SUCCESS. 1654 */ 1655 return (SCSI_RESET_SUCCESS | SCSI_RESET_BUS_RESET); 1656 fail: 1657 printk(KERN_CRIT "aha1542.c: Unable to perform hard reset.\n"); 1658 printk(KERN_CRIT "Power cycle machine to reset\n"); 1659 return (SCSI_RESET_ERROR | SCSI_RESET_BUS_RESET); 1660 1661 1662 } else { 1663 /* This does a selective reset of just the one device */ 1664 /* First locate the ccb for this command */ 1665 for (i = 0; i < AHA1542_MAILBOXES; i++) 1666 if (HOSTDATA(SCpnt->host)->SCint[i] == SCpnt) { 1667 HOSTDATA(SCpnt->host)->ccb[i].op = 0x81; /* BUS DEVICE RESET */ 1668 /* Now tell the 1542 to flush all pending commands for this target */ 1669 aha1542_out(SCpnt->host->io_port, &ahacmd, 1); 1670 1671 /* Here is the tricky part. What to do next. Do we get an interrupt 1672 for the commands that we aborted with the specified target, or 1673 do we generate this on our own? Try it without first and see 1674 what happens */ 1675 printk(KERN_WARNING "Sent BUS DEVICE RESET to target %d\n", SCpnt->target); 1676 1677 /* If the first does not work, then try the second. I think the 1678 first option is more likely to be correct. Free the command 1679 block for all commands running on this target... */ 1680 for (i = 0; i < AHA1542_MAILBOXES; i++) 1681 if (HOSTDATA(SCpnt->host)->SCint[i] && 1682 HOSTDATA(SCpnt->host)->SCint[i]->target == SCpnt->target) { 1683 Scsi_Cmnd *SCtmp; 1684 SCtmp = HOSTDATA(SCpnt->host)->SCint[i]; 1685 SCtmp->result = DID_RESET << 16; 1686 kfree(SCtmp->host_scribble); 1687 SCtmp->host_scribble = NULL; 1688 printk(KERN_WARNING "Sending DID_RESET for target %d\n", SCpnt->target); 1689 SCtmp->scsi_done(SCpnt); 1690 1691 HOSTDATA(SCpnt->host)->SCint[i] = NULL; 1692 HOSTDATA(SCpnt->host)->mb[i].status = 0; 1693 } 1694 return SCSI_RESET_SUCCESS; 1695 } 1696 } 1697 /* No active command at this time, so this means that each time we got 1698 some kind of response the last time through. Tell the mid-level code 1699 to request sense information in order to decide what to do next. */ 1700 return SCSI_RESET_PUNT; 1701 } 1702 #endif /* end of big comment block around old_abort + old_reset */ 1703 1704 static int aha1542_biosparam(struct scsi_device *sdev, 1705 struct block_device *bdev, sector_t capacity, int *ip) 1706 { 1707 int translation_algorithm; 1708 int size = capacity; 1709 1710 translation_algorithm = HOSTDATA(sdev->host)->bios_translation; 1711 1712 if ((size >> 11) > 1024 && translation_algorithm == BIOS_TRANSLATION_25563) { 1713 /* Please verify that this is the same as what DOS returns */ 1714 ip[0] = 255; 1715 ip[1] = 63; 1716 ip[2] = size / 255 / 63; 1717 } else { 1718 ip[0] = 64; 1719 ip[1] = 32; 1720 ip[2] = size >> 11; 1721 } 1722 1723 return 0; 1724 } 1725 MODULE_LICENSE("GPL"); 1726 1727 1728 static struct scsi_host_template driver_template = { 1729 .proc_name = "aha1542", 1730 .name = "Adaptec 1542", 1731 .detect = aha1542_detect, 1732 .release = aha1542_release, 1733 .queuecommand = aha1542_queuecommand, 1734 .eh_device_reset_handler= aha1542_dev_reset, 1735 .eh_bus_reset_handler = aha1542_bus_reset, 1736 .eh_host_reset_handler = aha1542_host_reset, 1737 .bios_param = aha1542_biosparam, 1738 .can_queue = AHA1542_MAILBOXES, 1739 .this_id = 7, 1740 .sg_tablesize = AHA1542_SCATTER, 1741 .cmd_per_lun = AHA1542_CMDLUN, 1742 .unchecked_isa_dma = 1, 1743 .use_clustering = ENABLE_CLUSTERING, 1744 }; 1745 #include "scsi_module.c" 1746