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 <mid@auk.cx> 25 * Added proper detection of the AHA-1640 (MCA version of AHA-1540) 26 */ 27 28 #include <linux/config.h> 29 #include <linux/module.h> 30 #include <linux/interrupt.h> 31 #include <linux/kernel.h> 32 #include <linux/types.h> 33 #include <linux/string.h> 34 #include <linux/ioport.h> 35 #include <linux/delay.h> 36 #include <linux/proc_fs.h> 37 #include <linux/init.h> 38 #include <linux/spinlock.h> 39 #include <linux/pci.h> 40 #include <linux/isapnp.h> 41 #include <linux/blkdev.h> 42 #include <linux/mca.h> 43 #include <linux/mca-legacy.h> 44 45 #include <asm/dma.h> 46 #include <asm/system.h> 47 #include <asm/io.h> 48 49 #include "scsi.h" 50 #include <scsi/scsi_host.h> 51 #include "aha1542.h" 52 53 #define SCSI_BUF_PA(address) isa_virt_to_bus(address) 54 #define SCSI_SG_PA(sgent) (isa_page_to_bus((sgent)->page) + (sgent)->offset) 55 56 static void BAD_DMA(void *address, unsigned int length) 57 { 58 printk(KERN_CRIT "buf vaddress %p paddress 0x%lx length %d\n", 59 address, 60 SCSI_BUF_PA(address), 61 length); 62 panic("Buffer at physical address > 16Mb used for aha1542"); 63 } 64 65 static void BAD_SG_DMA(Scsi_Cmnd * SCpnt, 66 struct scatterlist *sgpnt, 67 int nseg, 68 int badseg) 69 { 70 printk(KERN_CRIT "sgpnt[%d:%d] page %p/0x%llx length %u\n", 71 badseg, nseg, 72 page_address(sgpnt[badseg].page) + sgpnt[badseg].offset, 73 (unsigned long long)SCSI_SG_PA(&sgpnt[badseg]), 74 sgpnt[badseg].length); 75 76 /* 77 * Not safe to continue. 78 */ 79 panic("Buffer at physical address > 16Mb used for aha1542"); 80 } 81 82 #include<linux/stat.h> 83 84 #ifdef DEBUG 85 #define DEB(x) x 86 #else 87 #define DEB(x) 88 #endif 89 90 /* 91 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 $"; 92 */ 93 94 /* The adaptec can be configured for quite a number of addresses, but 95 I generally do not want the card poking around at random. We allow 96 two addresses - this allows people to use the Adaptec with a Midi 97 card, which also used 0x330 -- can be overridden with LILO! */ 98 99 #define MAXBOARDS 4 /* Increase this and the sizes of the 100 arrays below, if you need more.. */ 101 102 /* Boards 3,4 slots are reserved for ISAPnP/MCA scans */ 103 104 static unsigned int bases[MAXBOARDS] __initdata = {0x330, 0x334, 0, 0}; 105 106 /* set by aha1542_setup according to the command line; they also may 107 be marked __initdata, but require zero initializers then */ 108 109 static int setup_called[MAXBOARDS]; 110 static int setup_buson[MAXBOARDS]; 111 static int setup_busoff[MAXBOARDS]; 112 static int setup_dmaspeed[MAXBOARDS] __initdata = { -1, -1, -1, -1 }; 113 114 /* 115 * LILO/Module params: aha1542=<PORTBASE>[,<BUSON>,<BUSOFF>[,<DMASPEED>]] 116 * 117 * Where: <PORTBASE> is any of the valid AHA addresses: 118 * 0x130, 0x134, 0x230, 0x234, 0x330, 0x334 119 * <BUSON> is the time (in microsecs) that AHA spends on the AT-bus 120 * when transferring data. 1542A power-on default is 11us, 121 * valid values are in range: 2..15 (decimal) 122 * <BUSOFF> is the time that AHA spends OFF THE BUS after while 123 * it is transferring data (not to monopolize the bus). 124 * Power-on default is 4us, valid range: 1..64 microseconds. 125 * <DMASPEED> Default is jumper selected (1542A: on the J1), 126 * but experimenter can alter it with this. 127 * Valid values: 5, 6, 7, 8, 10 (MB/s) 128 * Factory default is 5 MB/s. 129 */ 130 131 #if defined(MODULE) 132 static int isapnp = 0; 133 static int aha1542[] = {0x330, 11, 4, -1}; 134 module_param_array(aha1542, int, NULL, 0); 135 module_param(isapnp, bool, 0); 136 137 static struct isapnp_device_id id_table[] __initdata = { 138 { 139 ISAPNP_ANY_ID, ISAPNP_ANY_ID, 140 ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1542), 141 0 142 }, 143 {0} 144 }; 145 146 MODULE_DEVICE_TABLE(isapnp, id_table); 147 148 #else 149 static int isapnp = 1; 150 #endif 151 152 #define BIOS_TRANSLATION_1632 0 /* Used by some old 1542A boards */ 153 #define BIOS_TRANSLATION_6432 1 /* Default case these days */ 154 #define BIOS_TRANSLATION_25563 2 /* Big disk case */ 155 156 struct aha1542_hostdata { 157 /* This will effectively start both of them at the first mailbox */ 158 int bios_translation; /* Mapping bios uses - for compatibility */ 159 int aha1542_last_mbi_used; 160 int aha1542_last_mbo_used; 161 Scsi_Cmnd *SCint[AHA1542_MAILBOXES]; 162 struct mailbox mb[2 * AHA1542_MAILBOXES]; 163 struct ccb ccb[AHA1542_MAILBOXES]; 164 }; 165 166 #define HOSTDATA(host) ((struct aha1542_hostdata *) &host->hostdata) 167 168 static struct Scsi_Host *aha_host[7]; /* One for each IRQ level (9-15) */ 169 170 static DEFINE_SPINLOCK(aha1542_lock); 171 172 173 174 #define WAITnexttimeout 3000000 175 176 static void setup_mailboxes(int base_io, struct Scsi_Host *shpnt); 177 static int aha1542_restart(struct Scsi_Host *shost); 178 static void aha1542_intr_handle(struct Scsi_Host *shost, void *dev_id, struct pt_regs *regs); 179 static irqreturn_t do_aha1542_intr_handle(int irq, void *dev_id, 180 struct pt_regs *regs); 181 182 #define aha1542_intr_reset(base) outb(IRST, CONTROL(base)) 183 184 #define WAIT(port, mask, allof, noneof) \ 185 { register int WAITbits; \ 186 register int WAITtimeout = WAITnexttimeout; \ 187 while (1) { \ 188 WAITbits = inb(port) & (mask); \ 189 if ((WAITbits & (allof)) == (allof) && ((WAITbits & (noneof)) == 0)) \ 190 break; \ 191 if (--WAITtimeout == 0) goto fail; \ 192 } \ 193 } 194 195 /* Similar to WAIT, except we use the udelay call to regulate the 196 amount of time we wait. */ 197 #define WAITd(port, mask, allof, noneof, timeout) \ 198 { register int WAITbits; \ 199 register int WAITtimeout = timeout; \ 200 while (1) { \ 201 WAITbits = inb(port) & (mask); \ 202 if ((WAITbits & (allof)) == (allof) && ((WAITbits & (noneof)) == 0)) \ 203 break; \ 204 mdelay(1); \ 205 if (--WAITtimeout == 0) goto fail; \ 206 } \ 207 } 208 209 static void aha1542_stat(void) 210 { 211 /* int s = inb(STATUS), i = inb(INTRFLAGS); 212 printk("status=%x intrflags=%x\n", s, i, WAITnexttimeout-WAITtimeout); */ 213 } 214 215 /* This is a bit complicated, but we need to make sure that an interrupt 216 routine does not send something out while we are in the middle of this. 217 Fortunately, it is only at boot time that multi-byte messages 218 are ever sent. */ 219 static int aha1542_out(unsigned int base, unchar * cmdp, int len) 220 { 221 unsigned long flags = 0; 222 int got_lock; 223 224 if (len == 1) { 225 got_lock = 0; 226 while (1 == 1) { 227 WAIT(STATUS(base), CDF, 0, CDF); 228 spin_lock_irqsave(&aha1542_lock, flags); 229 if (inb(STATUS(base)) & CDF) { 230 spin_unlock_irqrestore(&aha1542_lock, flags); 231 continue; 232 } 233 outb(*cmdp, DATA(base)); 234 spin_unlock_irqrestore(&aha1542_lock, flags); 235 return 0; 236 } 237 } else { 238 spin_lock_irqsave(&aha1542_lock, flags); 239 got_lock = 1; 240 while (len--) { 241 WAIT(STATUS(base), CDF, 0, CDF); 242 outb(*cmdp++, DATA(base)); 243 } 244 spin_unlock_irqrestore(&aha1542_lock, flags); 245 } 246 return 0; 247 fail: 248 if (got_lock) 249 spin_unlock_irqrestore(&aha1542_lock, flags); 250 printk(KERN_ERR "aha1542_out failed(%d): ", len + 1); 251 aha1542_stat(); 252 return 1; 253 } 254 255 /* Only used at boot time, so we do not need to worry about latency as much 256 here */ 257 258 static int __init aha1542_in(unsigned int base, unchar * cmdp, int len) 259 { 260 unsigned long flags; 261 262 spin_lock_irqsave(&aha1542_lock, flags); 263 while (len--) { 264 WAIT(STATUS(base), DF, DF, 0); 265 *cmdp++ = inb(DATA(base)); 266 } 267 spin_unlock_irqrestore(&aha1542_lock, flags); 268 return 0; 269 fail: 270 spin_unlock_irqrestore(&aha1542_lock, flags); 271 printk(KERN_ERR "aha1542_in failed(%d): ", len + 1); 272 aha1542_stat(); 273 return 1; 274 } 275 276 /* Similar to aha1542_in, except that we wait a very short period of time. 277 We use this if we know the board is alive and awake, but we are not sure 278 if the board will respond to the command we are about to send or not */ 279 static int __init aha1542_in1(unsigned int base, unchar * cmdp, int len) 280 { 281 unsigned long flags; 282 283 spin_lock_irqsave(&aha1542_lock, flags); 284 while (len--) { 285 WAITd(STATUS(base), DF, DF, 0, 100); 286 *cmdp++ = inb(DATA(base)); 287 } 288 spin_unlock_irqrestore(&aha1542_lock, flags); 289 return 0; 290 fail: 291 spin_unlock_irqrestore(&aha1542_lock, flags); 292 return 1; 293 } 294 295 static int makecode(unsigned hosterr, unsigned scsierr) 296 { 297 switch (hosterr) { 298 case 0x0: 299 case 0xa: /* Linked command complete without error and linked normally */ 300 case 0xb: /* Linked command complete without error, interrupt generated */ 301 hosterr = 0; 302 break; 303 304 case 0x11: /* Selection time out-The initiator selection or target 305 reselection was not complete within the SCSI Time out period */ 306 hosterr = DID_TIME_OUT; 307 break; 308 309 case 0x12: /* Data overrun/underrun-The target attempted to transfer more data 310 than was allocated by the Data Length field or the sum of the 311 Scatter / Gather Data Length fields. */ 312 313 case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */ 314 315 case 0x15: /* MBO command was not 00, 01 or 02-The first byte of the CB was 316 invalid. This usually indicates a software failure. */ 317 318 case 0x16: /* Invalid CCB Operation Code-The first byte of the CCB was invalid. 319 This usually indicates a software failure. */ 320 321 case 0x17: /* Linked CCB does not have the same LUN-A subsequent CCB of a set 322 of linked CCB's does not specify the same logical unit number as 323 the first. */ 324 case 0x18: /* Invalid Target Direction received from Host-The direction of a 325 Target Mode CCB was invalid. */ 326 327 case 0x19: /* Duplicate CCB Received in Target Mode-More than once CCB was 328 received to service data transfer between the same target LUN 329 and initiator SCSI ID in the same direction. */ 330 331 case 0x1a: /* Invalid CCB or Segment List Parameter-A segment list with a zero 332 length segment or invalid segment list boundaries was received. 333 A CCB parameter was invalid. */ 334 DEB(printk("Aha1542: %x %x\n", hosterr, scsierr)); 335 hosterr = DID_ERROR; /* Couldn't find any better */ 336 break; 337 338 case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus 339 phase sequence was requested by the target. The host adapter 340 will generate a SCSI Reset Condition, notifying the host with 341 a SCRD interrupt */ 342 hosterr = DID_RESET; 343 break; 344 default: 345 printk(KERN_ERR "aha1542: makecode: unknown hoststatus %x\n", hosterr); 346 break; 347 } 348 return scsierr | (hosterr << 16); 349 } 350 351 static int __init aha1542_test_port(int bse, struct Scsi_Host *shpnt) 352 { 353 unchar inquiry_cmd[] = {CMD_INQUIRY}; 354 unchar inquiry_result[4]; 355 unchar *cmdp; 356 int len; 357 volatile int debug = 0; 358 359 /* Quick and dirty test for presence of the card. */ 360 if (inb(STATUS(bse)) == 0xff) 361 return 0; 362 363 /* Reset the adapter. I ought to make a hard reset, but it's not really necessary */ 364 365 /* DEB(printk("aha1542_test_port called \n")); */ 366 367 /* In case some other card was probing here, reset interrupts */ 368 aha1542_intr_reset(bse); /* reset interrupts, so they don't block */ 369 370 outb(SRST | IRST /*|SCRST */ , CONTROL(bse)); 371 372 mdelay(20); /* Wait a little bit for things to settle down. */ 373 374 debug = 1; 375 /* Expect INIT and IDLE, any of the others are bad */ 376 WAIT(STATUS(bse), STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); 377 378 debug = 2; 379 /* Shouldn't have generated any interrupts during reset */ 380 if (inb(INTRFLAGS(bse)) & INTRMASK) 381 goto fail; 382 383 384 /* Perform a host adapter inquiry instead so we do not need to set 385 up the mailboxes ahead of time */ 386 387 aha1542_out(bse, inquiry_cmd, 1); 388 389 debug = 3; 390 len = 4; 391 cmdp = &inquiry_result[0]; 392 393 while (len--) { 394 WAIT(STATUS(bse), DF, DF, 0); 395 *cmdp++ = inb(DATA(bse)); 396 } 397 398 debug = 8; 399 /* Reading port should reset DF */ 400 if (inb(STATUS(bse)) & DF) 401 goto fail; 402 403 debug = 9; 404 /* When HACC, command is completed, and we're though testing */ 405 WAIT(INTRFLAGS(bse), HACC, HACC, 0); 406 /* now initialize adapter */ 407 408 debug = 10; 409 /* Clear interrupts */ 410 outb(IRST, CONTROL(bse)); 411 412 debug = 11; 413 414 return debug; /* 1 = ok */ 415 fail: 416 return 0; /* 0 = not ok */ 417 } 418 419 /* A quick wrapper for do_aha1542_intr_handle to grab the spin lock */ 420 static irqreturn_t do_aha1542_intr_handle(int irq, void *dev_id, 421 struct pt_regs *regs) 422 { 423 unsigned long flags; 424 struct Scsi_Host *shost; 425 426 shost = aha_host[irq - 9]; 427 if (!shost) 428 panic("Splunge!"); 429 430 spin_lock_irqsave(shost->host_lock, flags); 431 aha1542_intr_handle(shost, dev_id, regs); 432 spin_unlock_irqrestore(shost->host_lock, flags); 433 return IRQ_HANDLED; 434 } 435 436 /* A "high" level interrupt handler */ 437 static void aha1542_intr_handle(struct Scsi_Host *shost, void *dev_id, struct pt_regs *regs) 438 { 439 void (*my_done) (Scsi_Cmnd *) = NULL; 440 int errstatus, mbi, mbo, mbistatus; 441 int number_serviced; 442 unsigned long flags; 443 Scsi_Cmnd *SCtmp; 444 int flag; 445 int needs_restart; 446 struct mailbox *mb; 447 struct ccb *ccb; 448 449 mb = HOSTDATA(shost)->mb; 450 ccb = HOSTDATA(shost)->ccb; 451 452 #ifdef DEBUG 453 { 454 flag = inb(INTRFLAGS(shost->io_port)); 455 printk(KERN_DEBUG "aha1542_intr_handle: "); 456 if (!(flag & ANYINTR)) 457 printk("no interrupt?"); 458 if (flag & MBIF) 459 printk("MBIF "); 460 if (flag & MBOA) 461 printk("MBOF "); 462 if (flag & HACC) 463 printk("HACC "); 464 if (flag & SCRD) 465 printk("SCRD "); 466 printk("status %02x\n", inb(STATUS(shost->io_port))); 467 }; 468 #endif 469 number_serviced = 0; 470 needs_restart = 0; 471 472 while (1 == 1) { 473 flag = inb(INTRFLAGS(shost->io_port)); 474 475 /* Check for unusual interrupts. If any of these happen, we should 476 probably do something special, but for now just printing a message 477 is sufficient. A SCSI reset detected is something that we really 478 need to deal with in some way. */ 479 if (flag & ~MBIF) { 480 if (flag & MBOA) 481 printk("MBOF "); 482 if (flag & HACC) 483 printk("HACC "); 484 if (flag & SCRD) { 485 needs_restart = 1; 486 printk("SCRD "); 487 } 488 } 489 aha1542_intr_reset(shost->io_port); 490 491 spin_lock_irqsave(&aha1542_lock, flags); 492 mbi = HOSTDATA(shost)->aha1542_last_mbi_used + 1; 493 if (mbi >= 2 * AHA1542_MAILBOXES) 494 mbi = AHA1542_MAILBOXES; 495 496 do { 497 if (mb[mbi].status != 0) 498 break; 499 mbi++; 500 if (mbi >= 2 * AHA1542_MAILBOXES) 501 mbi = AHA1542_MAILBOXES; 502 } while (mbi != HOSTDATA(shost)->aha1542_last_mbi_used); 503 504 if (mb[mbi].status == 0) { 505 spin_unlock_irqrestore(&aha1542_lock, flags); 506 /* Hmm, no mail. Must have read it the last time around */ 507 if (!number_serviced && !needs_restart) 508 printk(KERN_WARNING "aha1542.c: interrupt received, but no mail.\n"); 509 /* We detected a reset. Restart all pending commands for 510 devices that use the hard reset option */ 511 if (needs_restart) 512 aha1542_restart(shost); 513 return; 514 }; 515 516 mbo = (scsi2int(mb[mbi].ccbptr) - (SCSI_BUF_PA(&ccb[0]))) / sizeof(struct ccb); 517 mbistatus = mb[mbi].status; 518 mb[mbi].status = 0; 519 HOSTDATA(shost)->aha1542_last_mbi_used = mbi; 520 spin_unlock_irqrestore(&aha1542_lock, flags); 521 522 #ifdef DEBUG 523 { 524 if (ccb[mbo].tarstat | ccb[mbo].hastat) 525 printk(KERN_DEBUG "aha1542_command: returning %x (status %d)\n", 526 ccb[mbo].tarstat + ((int) ccb[mbo].hastat << 16), mb[mbi].status); 527 }; 528 #endif 529 530 if (mbistatus == 3) 531 continue; /* Aborted command not found */ 532 533 #ifdef DEBUG 534 printk(KERN_DEBUG "...done %d %d\n", mbo, mbi); 535 #endif 536 537 SCtmp = HOSTDATA(shost)->SCint[mbo]; 538 539 if (!SCtmp || !SCtmp->scsi_done) { 540 printk(KERN_WARNING "aha1542_intr_handle: Unexpected interrupt\n"); 541 printk(KERN_WARNING "tarstat=%x, hastat=%x idlun=%x ccb#=%d \n", ccb[mbo].tarstat, 542 ccb[mbo].hastat, ccb[mbo].idlun, mbo); 543 return; 544 } 545 my_done = SCtmp->scsi_done; 546 kfree(SCtmp->host_scribble); 547 SCtmp->host_scribble = NULL; 548 /* Fetch the sense data, and tuck it away, in the required slot. The 549 Adaptec automatically fetches it, and there is no guarantee that 550 we will still have it in the cdb when we come back */ 551 if (ccb[mbo].tarstat == 2) 552 memcpy(SCtmp->sense_buffer, &ccb[mbo].cdb[ccb[mbo].cdblen], 553 sizeof(SCtmp->sense_buffer)); 554 555 556 /* is there mail :-) */ 557 558 /* more error checking left out here */ 559 if (mbistatus != 1) 560 /* This is surely wrong, but I don't know what's right */ 561 errstatus = makecode(ccb[mbo].hastat, ccb[mbo].tarstat); 562 else 563 errstatus = 0; 564 565 #ifdef DEBUG 566 if (errstatus) 567 printk(KERN_DEBUG "(aha1542 error:%x %x %x) ", errstatus, 568 ccb[mbo].hastat, ccb[mbo].tarstat); 569 #endif 570 571 if (ccb[mbo].tarstat == 2) { 572 #ifdef DEBUG 573 int i; 574 #endif 575 DEB(printk("aha1542_intr_handle: sense:")); 576 #ifdef DEBUG 577 for (i = 0; i < 12; i++) 578 printk("%02x ", ccb[mbo].cdb[ccb[mbo].cdblen + i]); 579 printk("\n"); 580 #endif 581 /* 582 DEB(printk("aha1542_intr_handle: buf:")); 583 for (i = 0; i < bufflen; i++) 584 printk("%02x ", ((unchar *)buff)[i]); 585 printk("\n"); 586 */ 587 } 588 DEB(if (errstatus) printk("aha1542_intr_handle: returning %6x\n", errstatus)); 589 SCtmp->result = errstatus; 590 HOSTDATA(shost)->SCint[mbo] = NULL; /* This effectively frees up the mailbox slot, as 591 far as queuecommand is concerned */ 592 my_done(SCtmp); 593 number_serviced++; 594 }; 595 } 596 597 static int aha1542_queuecommand(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *)) 598 { 599 unchar ahacmd = CMD_START_SCSI; 600 unchar direction; 601 unchar *cmd = (unchar *) SCpnt->cmnd; 602 unchar target = SCpnt->device->id; 603 unchar lun = SCpnt->device->lun; 604 unsigned long flags; 605 void *buff = SCpnt->request_buffer; 606 int bufflen = SCpnt->request_bufflen; 607 int mbo; 608 struct mailbox *mb; 609 struct ccb *ccb; 610 611 DEB(int i); 612 613 mb = HOSTDATA(SCpnt->device->host)->mb; 614 ccb = HOSTDATA(SCpnt->device->host)->ccb; 615 616 DEB(if (target > 1) { 617 SCpnt->result = DID_TIME_OUT << 16; 618 done(SCpnt); return 0; 619 } 620 ); 621 622 if (*cmd == REQUEST_SENSE) { 623 /* Don't do the command - we have the sense data already */ 624 #if 0 625 /* scsi_request_sense() provides a buffer of size 256, 626 so there is no reason to expect equality */ 627 if (bufflen != sizeof(SCpnt->sense_buffer)) 628 printk(KERN_CRIT "aha1542: Wrong buffer length supplied " 629 "for request sense (%d)\n", bufflen); 630 #endif 631 SCpnt->result = 0; 632 done(SCpnt); 633 return 0; 634 } 635 #ifdef DEBUG 636 if (*cmd == READ_10 || *cmd == WRITE_10) 637 i = xscsi2int(cmd + 2); 638 else if (*cmd == READ_6 || *cmd == WRITE_6) 639 i = scsi2int(cmd + 2); 640 else 641 i = -1; 642 if (done) 643 printk(KERN_DEBUG "aha1542_queuecommand: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen); 644 else 645 printk(KERN_DEBUG "aha1542_command: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen); 646 aha1542_stat(); 647 printk(KERN_DEBUG "aha1542_queuecommand: dumping scsi cmd:"); 648 for (i = 0; i < SCpnt->cmd_len; i++) 649 printk("%02x ", cmd[i]); 650 printk("\n"); 651 if (*cmd == WRITE_10 || *cmd == WRITE_6) 652 return 0; /* we are still testing, so *don't* write */ 653 #endif 654 /* Use the outgoing mailboxes in a round-robin fashion, because this 655 is how the host adapter will scan for them */ 656 657 spin_lock_irqsave(&aha1542_lock, flags); 658 mbo = HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used + 1; 659 if (mbo >= AHA1542_MAILBOXES) 660 mbo = 0; 661 662 do { 663 if (mb[mbo].status == 0 && HOSTDATA(SCpnt->device->host)->SCint[mbo] == NULL) 664 break; 665 mbo++; 666 if (mbo >= AHA1542_MAILBOXES) 667 mbo = 0; 668 } while (mbo != HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used); 669 670 if (mb[mbo].status || HOSTDATA(SCpnt->device->host)->SCint[mbo]) 671 panic("Unable to find empty mailbox for aha1542.\n"); 672 673 HOSTDATA(SCpnt->device->host)->SCint[mbo] = SCpnt; /* This will effectively prevent someone else from 674 screwing with this cdb. */ 675 676 HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used = mbo; 677 spin_unlock_irqrestore(&aha1542_lock, flags); 678 679 #ifdef DEBUG 680 printk(KERN_DEBUG "Sending command (%d %x)...", mbo, done); 681 #endif 682 683 any2scsi(mb[mbo].ccbptr, SCSI_BUF_PA(&ccb[mbo])); /* This gets trashed for some reason */ 684 685 memset(&ccb[mbo], 0, sizeof(struct ccb)); 686 687 ccb[mbo].cdblen = SCpnt->cmd_len; 688 689 direction = 0; 690 if (*cmd == READ_10 || *cmd == READ_6) 691 direction = 8; 692 else if (*cmd == WRITE_10 || *cmd == WRITE_6) 693 direction = 16; 694 695 memcpy(ccb[mbo].cdb, cmd, ccb[mbo].cdblen); 696 697 if (SCpnt->use_sg) { 698 struct scatterlist *sgpnt; 699 struct chain *cptr; 700 #ifdef DEBUG 701 unsigned char *ptr; 702 #endif 703 int i; 704 ccb[mbo].op = 2; /* SCSI Initiator Command w/scatter-gather */ 705 SCpnt->host_scribble = (unsigned char *) kmalloc(512, GFP_KERNEL | GFP_DMA); 706 sgpnt = (struct scatterlist *) SCpnt->request_buffer; 707 cptr = (struct chain *) SCpnt->host_scribble; 708 if (cptr == NULL) { 709 /* free the claimed mailbox slot */ 710 HOSTDATA(SCpnt->device->host)->SCint[mbo] = NULL; 711 return SCSI_MLQUEUE_HOST_BUSY; 712 } 713 for (i = 0; i < SCpnt->use_sg; i++) { 714 if (sgpnt[i].length == 0 || SCpnt->use_sg > 16 || 715 (((int) sgpnt[i].offset) & 1) || (sgpnt[i].length & 1)) { 716 unsigned char *ptr; 717 printk(KERN_CRIT "Bad segment list supplied to aha1542.c (%d, %d)\n", SCpnt->use_sg, i); 718 for (i = 0; i < SCpnt->use_sg; i++) { 719 printk(KERN_CRIT "%d: %p %d\n", i, 720 (page_address(sgpnt[i].page) + 721 sgpnt[i].offset), 722 sgpnt[i].length); 723 }; 724 printk(KERN_CRIT "cptr %x: ", (unsigned int) cptr); 725 ptr = (unsigned char *) &cptr[i]; 726 for (i = 0; i < 18; i++) 727 printk("%02x ", ptr[i]); 728 panic("Foooooooood fight!"); 729 }; 730 any2scsi(cptr[i].dataptr, SCSI_SG_PA(&sgpnt[i])); 731 if (SCSI_SG_PA(&sgpnt[i]) + sgpnt[i].length - 1 > ISA_DMA_THRESHOLD) 732 BAD_SG_DMA(SCpnt, sgpnt, SCpnt->use_sg, i); 733 any2scsi(cptr[i].datalen, sgpnt[i].length); 734 }; 735 any2scsi(ccb[mbo].datalen, SCpnt->use_sg * sizeof(struct chain)); 736 any2scsi(ccb[mbo].dataptr, SCSI_BUF_PA(cptr)); 737 #ifdef DEBUG 738 printk("cptr %x: ", cptr); 739 ptr = (unsigned char *) cptr; 740 for (i = 0; i < 18; i++) 741 printk("%02x ", ptr[i]); 742 #endif 743 } else { 744 ccb[mbo].op = 0; /* SCSI Initiator Command */ 745 SCpnt->host_scribble = NULL; 746 any2scsi(ccb[mbo].datalen, bufflen); 747 if (buff && SCSI_BUF_PA(buff + bufflen - 1) > ISA_DMA_THRESHOLD) 748 BAD_DMA(buff, bufflen); 749 any2scsi(ccb[mbo].dataptr, SCSI_BUF_PA(buff)); 750 }; 751 ccb[mbo].idlun = (target & 7) << 5 | direction | (lun & 7); /*SCSI Target Id */ 752 ccb[mbo].rsalen = 16; 753 ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; 754 ccb[mbo].commlinkid = 0; 755 756 #ifdef DEBUG 757 { 758 int i; 759 printk(KERN_DEBUG "aha1542_command: sending.. "); 760 for (i = 0; i < sizeof(ccb[mbo]) - 10; i++) 761 printk("%02x ", ((unchar *) & ccb[mbo])[i]); 762 }; 763 #endif 764 765 if (done) { 766 DEB(printk("aha1542_queuecommand: now waiting for interrupt "); 767 aha1542_stat()); 768 SCpnt->scsi_done = done; 769 mb[mbo].status = 1; 770 aha1542_out(SCpnt->device->host->io_port, &ahacmd, 1); /* start scsi command */ 771 DEB(aha1542_stat()); 772 } else 773 printk("aha1542_queuecommand: done can't be NULL\n"); 774 775 return 0; 776 } 777 778 /* Initialize mailboxes */ 779 static void setup_mailboxes(int bse, struct Scsi_Host *shpnt) 780 { 781 int i; 782 struct mailbox *mb; 783 struct ccb *ccb; 784 785 unchar cmd[5] = { CMD_MBINIT, AHA1542_MAILBOXES, 0, 0, 0}; 786 787 mb = HOSTDATA(shpnt)->mb; 788 ccb = HOSTDATA(shpnt)->ccb; 789 790 for (i = 0; i < AHA1542_MAILBOXES; i++) { 791 mb[i].status = mb[AHA1542_MAILBOXES + i].status = 0; 792 any2scsi(mb[i].ccbptr, SCSI_BUF_PA(&ccb[i])); 793 }; 794 aha1542_intr_reset(bse); /* reset interrupts, so they don't block */ 795 any2scsi((cmd + 2), SCSI_BUF_PA(mb)); 796 aha1542_out(bse, cmd, 5); 797 WAIT(INTRFLAGS(bse), INTRMASK, HACC, 0); 798 while (0) { 799 fail: 800 printk(KERN_ERR "aha1542_detect: failed setting up mailboxes\n"); 801 } 802 aha1542_intr_reset(bse); 803 } 804 805 static int __init aha1542_getconfig(int base_io, unsigned char *irq_level, unsigned char *dma_chan, unsigned char *scsi_id) 806 { 807 unchar inquiry_cmd[] = {CMD_RETCONF}; 808 unchar inquiry_result[3]; 809 int i; 810 i = inb(STATUS(base_io)); 811 if (i & DF) { 812 i = inb(DATA(base_io)); 813 }; 814 aha1542_out(base_io, inquiry_cmd, 1); 815 aha1542_in(base_io, inquiry_result, 3); 816 WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); 817 while (0) { 818 fail: 819 printk(KERN_ERR "aha1542_detect: query board settings\n"); 820 } 821 aha1542_intr_reset(base_io); 822 switch (inquiry_result[0]) { 823 case 0x80: 824 *dma_chan = 7; 825 break; 826 case 0x40: 827 *dma_chan = 6; 828 break; 829 case 0x20: 830 *dma_chan = 5; 831 break; 832 case 0x01: 833 *dma_chan = 0; 834 break; 835 case 0: 836 /* This means that the adapter, although Adaptec 1542 compatible, doesn't use a DMA channel. 837 Currently only aware of the BusLogic BT-445S VL-Bus adapter which needs this. */ 838 *dma_chan = 0xFF; 839 break; 840 default: 841 printk(KERN_ERR "Unable to determine Adaptec DMA priority. Disabling board\n"); 842 return -1; 843 }; 844 switch (inquiry_result[1]) { 845 case 0x40: 846 *irq_level = 15; 847 break; 848 case 0x20: 849 *irq_level = 14; 850 break; 851 case 0x8: 852 *irq_level = 12; 853 break; 854 case 0x4: 855 *irq_level = 11; 856 break; 857 case 0x2: 858 *irq_level = 10; 859 break; 860 case 0x1: 861 *irq_level = 9; 862 break; 863 default: 864 printk(KERN_ERR "Unable to determine Adaptec IRQ level. Disabling board\n"); 865 return -1; 866 }; 867 *scsi_id = inquiry_result[2] & 7; 868 return 0; 869 } 870 871 /* This function should only be called for 1542C boards - we can detect 872 the special firmware settings and unlock the board */ 873 874 static int __init aha1542_mbenable(int base) 875 { 876 static unchar mbenable_cmd[3]; 877 static unchar mbenable_result[2]; 878 int retval; 879 880 retval = BIOS_TRANSLATION_6432; 881 882 mbenable_cmd[0] = CMD_EXTBIOS; 883 aha1542_out(base, mbenable_cmd, 1); 884 if (aha1542_in1(base, mbenable_result, 2)) 885 return retval; 886 WAITd(INTRFLAGS(base), INTRMASK, HACC, 0, 100); 887 aha1542_intr_reset(base); 888 889 if ((mbenable_result[0] & 0x08) || mbenable_result[1]) { 890 mbenable_cmd[0] = CMD_MBENABLE; 891 mbenable_cmd[1] = 0; 892 mbenable_cmd[2] = mbenable_result[1]; 893 894 if ((mbenable_result[0] & 0x08) && (mbenable_result[1] & 0x03)) 895 retval = BIOS_TRANSLATION_25563; 896 897 aha1542_out(base, mbenable_cmd, 3); 898 WAIT(INTRFLAGS(base), INTRMASK, HACC, 0); 899 }; 900 while (0) { 901 fail: 902 printk(KERN_ERR "aha1542_mbenable: Mailbox init failed\n"); 903 } 904 aha1542_intr_reset(base); 905 return retval; 906 } 907 908 /* Query the board to find out if it is a 1542 or a 1740, or whatever. */ 909 static int __init aha1542_query(int base_io, int *transl) 910 { 911 unchar inquiry_cmd[] = {CMD_INQUIRY}; 912 unchar inquiry_result[4]; 913 int i; 914 i = inb(STATUS(base_io)); 915 if (i & DF) { 916 i = inb(DATA(base_io)); 917 }; 918 aha1542_out(base_io, inquiry_cmd, 1); 919 aha1542_in(base_io, inquiry_result, 4); 920 WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); 921 while (0) { 922 fail: 923 printk(KERN_ERR "aha1542_detect: query card type\n"); 924 } 925 aha1542_intr_reset(base_io); 926 927 *transl = BIOS_TRANSLATION_6432; /* Default case */ 928 929 /* For an AHA1740 series board, we ignore the board since there is a 930 hardware bug which can lead to wrong blocks being returned if the board 931 is operating in the 1542 emulation mode. Since there is an extended mode 932 driver, we simply ignore the board and let the 1740 driver pick it up. 933 */ 934 935 if (inquiry_result[0] == 0x43) { 936 printk(KERN_INFO "aha1542.c: Emulation mode not supported for AHA 174N hardware.\n"); 937 return 1; 938 }; 939 940 /* Always call this - boards that do not support extended bios translation 941 will ignore the command, and we will set the proper default */ 942 943 *transl = aha1542_mbenable(base_io); 944 945 return 0; 946 } 947 948 #ifndef MODULE 949 static char *setup_str[MAXBOARDS] __initdata; 950 static int setup_idx = 0; 951 952 static void __init aha1542_setup(char *str, int *ints) 953 { 954 const char *ahausage = "aha1542: usage: aha1542=<PORTBASE>[,<BUSON>,<BUSOFF>[,<DMASPEED>]]\n"; 955 int setup_portbase; 956 957 if (setup_idx >= MAXBOARDS) { 958 printk(KERN_ERR "aha1542: aha1542_setup called too many times! Bad LILO params ?\n"); 959 printk(KERN_ERR " Entryline 1: %s\n", setup_str[0]); 960 printk(KERN_ERR " Entryline 2: %s\n", setup_str[1]); 961 printk(KERN_ERR " This line: %s\n", str); 962 return; 963 } 964 if (ints[0] < 1 || ints[0] > 4) { 965 printk(KERN_ERR "aha1542: %s\n", str); 966 printk(ahausage); 967 printk(KERN_ERR "aha1542: Wrong parameters may cause system malfunction.. We try anyway..\n"); 968 } 969 setup_called[setup_idx] = ints[0]; 970 setup_str[setup_idx] = str; 971 972 setup_portbase = ints[0] >= 1 ? ints[1] : 0; /* Preserve the default value.. */ 973 setup_buson[setup_idx] = ints[0] >= 2 ? ints[2] : 7; 974 setup_busoff[setup_idx] = ints[0] >= 3 ? ints[3] : 5; 975 if (ints[0] >= 4) 976 { 977 int atbt = -1; 978 switch (ints[4]) { 979 case 5: 980 atbt = 0x00; 981 break; 982 case 6: 983 atbt = 0x04; 984 break; 985 case 7: 986 atbt = 0x01; 987 break; 988 case 8: 989 atbt = 0x02; 990 break; 991 case 10: 992 atbt = 0x03; 993 break; 994 default: 995 printk(KERN_ERR "aha1542: %s\n", str); 996 printk(ahausage); 997 printk(KERN_ERR "aha1542: Valid values for DMASPEED are 5-8, 10 MB/s. Using jumper defaults.\n"); 998 break; 999 } 1000 setup_dmaspeed[setup_idx] = atbt; 1001 } 1002 if (setup_portbase != 0) 1003 bases[setup_idx] = setup_portbase; 1004 1005 ++setup_idx; 1006 } 1007 1008 static int __init do_setup(char *str) 1009 { 1010 int ints[5]; 1011 1012 int count=setup_idx; 1013 1014 get_options(str, sizeof(ints)/sizeof(int), ints); 1015 aha1542_setup(str,ints); 1016 1017 return count<setup_idx; 1018 } 1019 1020 __setup("aha1542=",do_setup); 1021 #endif 1022 1023 /* return non-zero on detection */ 1024 static int __init aha1542_detect(struct scsi_host_template * tpnt) 1025 { 1026 unsigned char dma_chan; 1027 unsigned char irq_level; 1028 unsigned char scsi_id; 1029 unsigned long flags; 1030 unsigned int base_io; 1031 int trans; 1032 struct Scsi_Host *shpnt = NULL; 1033 int count = 0; 1034 int indx; 1035 1036 DEB(printk("aha1542_detect: \n")); 1037 1038 tpnt->proc_name = "aha1542"; 1039 1040 #ifdef MODULE 1041 bases[0] = aha1542[0]; 1042 setup_buson[0] = aha1542[1]; 1043 setup_busoff[0] = aha1542[2]; 1044 { 1045 int atbt = -1; 1046 switch (aha1542[3]) { 1047 case 5: 1048 atbt = 0x00; 1049 break; 1050 case 6: 1051 atbt = 0x04; 1052 break; 1053 case 7: 1054 atbt = 0x01; 1055 break; 1056 case 8: 1057 atbt = 0x02; 1058 break; 1059 case 10: 1060 atbt = 0x03; 1061 break; 1062 }; 1063 setup_dmaspeed[0] = atbt; 1064 } 1065 #endif 1066 1067 /* 1068 * Find MicroChannel cards (AHA1640) 1069 */ 1070 #ifdef CONFIG_MCA_LEGACY 1071 if(MCA_bus) { 1072 int slot = 0; 1073 int pos = 0; 1074 1075 for (indx = 0; (slot != MCA_NOTFOUND) && 1076 (indx < sizeof(bases)/sizeof(bases[0])); indx++) { 1077 1078 if (bases[indx]) 1079 continue; 1080 1081 /* Detect only AHA-1640 cards -- MCA ID 0F1F */ 1082 slot = mca_find_unused_adapter(0x0f1f, slot); 1083 if (slot == MCA_NOTFOUND) 1084 break; 1085 1086 1087 /* Found one */ 1088 pos = mca_read_stored_pos(slot, 3); 1089 1090 /* Decode address */ 1091 if (pos & 0x80) { 1092 if (pos & 0x02) { 1093 if (pos & 0x01) 1094 bases[indx] = 0x334; 1095 else 1096 bases[indx] = 0x234; 1097 } else { 1098 if (pos & 0x01) 1099 bases[indx] = 0x134; 1100 } 1101 } else { 1102 if (pos & 0x02) { 1103 if (pos & 0x01) 1104 bases[indx] = 0x330; 1105 else 1106 bases[indx] = 0x230; 1107 } else { 1108 if (pos & 0x01) 1109 bases[indx] = 0x130; 1110 } 1111 } 1112 1113 /* No need to decode IRQ and Arb level -- those are 1114 * read off the card later. 1115 */ 1116 printk(KERN_INFO "Found an AHA-1640 in MCA slot %d, I/O 0x%04x\n", slot, bases[indx]); 1117 1118 mca_set_adapter_name(slot, "Adapter AHA-1640"); 1119 mca_set_adapter_procfn(slot, NULL, NULL); 1120 mca_mark_as_used(slot); 1121 1122 /* Go on */ 1123 slot++; 1124 } 1125 1126 } 1127 #endif 1128 1129 /* 1130 * Hunt for ISA Plug'n'Pray Adaptecs (AHA1535) 1131 */ 1132 1133 if(isapnp) 1134 { 1135 struct pnp_dev *pdev = NULL; 1136 for(indx = 0; indx <sizeof(bases)/sizeof(bases[0]);indx++) 1137 { 1138 if(bases[indx]) 1139 continue; 1140 pdev = pnp_find_dev(NULL, ISAPNP_VENDOR('A', 'D', 'P'), 1141 ISAPNP_FUNCTION(0x1542), pdev); 1142 if(pdev==NULL) 1143 break; 1144 /* 1145 * Activate the PnP card 1146 */ 1147 1148 if(pnp_device_attach(pdev)<0) 1149 continue; 1150 1151 if(pnp_activate_dev(pdev)<0) { 1152 pnp_device_detach(pdev); 1153 continue; 1154 } 1155 1156 if(!pnp_port_valid(pdev, 0)) { 1157 pnp_device_detach(pdev); 1158 continue; 1159 } 1160 1161 bases[indx] = pnp_port_start(pdev, 0); 1162 1163 /* The card can be queried for its DMA, we have 1164 the DMA set up that is enough */ 1165 1166 printk(KERN_INFO "ISAPnP found an AHA1535 at I/O 0x%03X\n", bases[indx]); 1167 } 1168 } 1169 for (indx = 0; indx < sizeof(bases) / sizeof(bases[0]); indx++) 1170 if (bases[indx] != 0 && request_region(bases[indx], 4, "aha1542")) { 1171 shpnt = scsi_register(tpnt, 1172 sizeof(struct aha1542_hostdata)); 1173 1174 if(shpnt==NULL) { 1175 release_region(bases[indx], 4); 1176 continue; 1177 } 1178 /* For now we do this - until kmalloc is more intelligent 1179 we are resigned to stupid hacks like this */ 1180 if (SCSI_BUF_PA(shpnt) >= ISA_DMA_THRESHOLD) { 1181 printk(KERN_ERR "Invalid address for shpnt with 1542.\n"); 1182 goto unregister; 1183 } 1184 if (!aha1542_test_port(bases[indx], shpnt)) 1185 goto unregister; 1186 1187 1188 base_io = bases[indx]; 1189 1190 /* Set the Bus on/off-times as not to ruin floppy performance */ 1191 { 1192 unchar oncmd[] = {CMD_BUSON_TIME, 7}; 1193 unchar offcmd[] = {CMD_BUSOFF_TIME, 5}; 1194 1195 if (setup_called[indx]) { 1196 oncmd[1] = setup_buson[indx]; 1197 offcmd[1] = setup_busoff[indx]; 1198 } 1199 aha1542_intr_reset(base_io); 1200 aha1542_out(base_io, oncmd, 2); 1201 WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); 1202 aha1542_intr_reset(base_io); 1203 aha1542_out(base_io, offcmd, 2); 1204 WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); 1205 if (setup_dmaspeed[indx] >= 0) { 1206 unchar dmacmd[] = {CMD_DMASPEED, 0}; 1207 dmacmd[1] = setup_dmaspeed[indx]; 1208 aha1542_intr_reset(base_io); 1209 aha1542_out(base_io, dmacmd, 2); 1210 WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); 1211 } 1212 while (0) { 1213 fail: 1214 printk(KERN_ERR "aha1542_detect: setting bus on/off-time failed\n"); 1215 } 1216 aha1542_intr_reset(base_io); 1217 } 1218 if (aha1542_query(base_io, &trans)) 1219 goto unregister; 1220 1221 if (aha1542_getconfig(base_io, &irq_level, &dma_chan, &scsi_id) == -1) 1222 goto unregister; 1223 1224 printk(KERN_INFO "Configuring Adaptec (SCSI-ID %d) at IO:%x, IRQ %d", scsi_id, base_io, irq_level); 1225 if (dma_chan != 0xFF) 1226 printk(", DMA priority %d", dma_chan); 1227 printk("\n"); 1228 1229 DEB(aha1542_stat()); 1230 setup_mailboxes(base_io, shpnt); 1231 1232 DEB(aha1542_stat()); 1233 1234 DEB(printk("aha1542_detect: enable interrupt channel %d\n", irq_level)); 1235 spin_lock_irqsave(&aha1542_lock, flags); 1236 if (request_irq(irq_level, do_aha1542_intr_handle, 0, "aha1542", NULL)) { 1237 printk(KERN_ERR "Unable to allocate IRQ for adaptec controller.\n"); 1238 spin_unlock_irqrestore(&aha1542_lock, flags); 1239 goto unregister; 1240 } 1241 if (dma_chan != 0xFF) { 1242 if (request_dma(dma_chan, "aha1542")) { 1243 printk(KERN_ERR "Unable to allocate DMA channel for Adaptec.\n"); 1244 free_irq(irq_level, NULL); 1245 spin_unlock_irqrestore(&aha1542_lock, flags); 1246 goto unregister; 1247 } 1248 if (dma_chan == 0 || dma_chan >= 5) { 1249 set_dma_mode(dma_chan, DMA_MODE_CASCADE); 1250 enable_dma(dma_chan); 1251 } 1252 } 1253 aha_host[irq_level - 9] = shpnt; 1254 shpnt->this_id = scsi_id; 1255 shpnt->unique_id = base_io; 1256 shpnt->io_port = base_io; 1257 shpnt->n_io_port = 4; /* Number of bytes of I/O space used */ 1258 shpnt->dma_channel = dma_chan; 1259 shpnt->irq = irq_level; 1260 HOSTDATA(shpnt)->bios_translation = trans; 1261 if (trans == BIOS_TRANSLATION_25563) 1262 printk(KERN_INFO "aha1542.c: Using extended bios translation\n"); 1263 HOSTDATA(shpnt)->aha1542_last_mbi_used = (2 * AHA1542_MAILBOXES - 1); 1264 HOSTDATA(shpnt)->aha1542_last_mbo_used = (AHA1542_MAILBOXES - 1); 1265 memset(HOSTDATA(shpnt)->SCint, 0, sizeof(HOSTDATA(shpnt)->SCint)); 1266 spin_unlock_irqrestore(&aha1542_lock, flags); 1267 #if 0 1268 DEB(printk(" *** READ CAPACITY ***\n")); 1269 1270 { 1271 unchar buf[8]; 1272 static unchar cmd[] = { READ_CAPACITY, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; 1273 int i; 1274 1275 for (i = 0; i < sizeof(buf); ++i) 1276 buf[i] = 0x87; 1277 for (i = 0; i < 2; ++i) 1278 if (!aha1542_command(i, cmd, buf, sizeof(buf))) { 1279 printk(KERN_DEBUG "aha_detect: LU %d sector_size %d device_size %d\n", 1280 i, xscsi2int(buf + 4), xscsi2int(buf)); 1281 } 1282 } 1283 1284 DEB(printk(" *** NOW RUNNING MY OWN TEST *** \n")); 1285 1286 for (i = 0; i < 4; ++i) { 1287 unsigned char cmd[10]; 1288 static buffer[512]; 1289 1290 cmd[0] = READ_10; 1291 cmd[1] = 0; 1292 xany2scsi(cmd + 2, i); 1293 cmd[6] = 0; 1294 cmd[7] = 0; 1295 cmd[8] = 1; 1296 cmd[9] = 0; 1297 aha1542_command(0, cmd, buffer, 512); 1298 } 1299 #endif 1300 count++; 1301 continue; 1302 unregister: 1303 release_region(bases[indx], 4); 1304 scsi_unregister(shpnt); 1305 continue; 1306 1307 }; 1308 1309 return count; 1310 } 1311 1312 static int aha1542_release(struct Scsi_Host *shost) 1313 { 1314 if (shost->irq) 1315 free_irq(shost->irq, NULL); 1316 if (shost->dma_channel != 0xff) 1317 free_dma(shost->dma_channel); 1318 if (shost->io_port && shost->n_io_port) 1319 release_region(shost->io_port, shost->n_io_port); 1320 scsi_unregister(shost); 1321 return 0; 1322 } 1323 1324 static int aha1542_restart(struct Scsi_Host *shost) 1325 { 1326 int i; 1327 int count = 0; 1328 #if 0 1329 unchar ahacmd = CMD_START_SCSI; 1330 #endif 1331 1332 for (i = 0; i < AHA1542_MAILBOXES; i++) 1333 if (HOSTDATA(shost)->SCint[i] && 1334 !(HOSTDATA(shost)->SCint[i]->device->soft_reset)) { 1335 #if 0 1336 HOSTDATA(shost)->mb[i].status = 1; /* Indicate ready to restart... */ 1337 #endif 1338 count++; 1339 } 1340 printk(KERN_DEBUG "Potential to restart %d stalled commands...\n", count); 1341 #if 0 1342 /* start scsi command */ 1343 if (count) 1344 aha1542_out(shost->io_port, &ahacmd, 1); 1345 #endif 1346 return 0; 1347 } 1348 1349 /* 1350 * This is a device reset. This is handled by sending a special command 1351 * to the device. 1352 */ 1353 static int aha1542_dev_reset(Scsi_Cmnd * SCpnt) 1354 { 1355 unsigned long flags; 1356 struct mailbox *mb; 1357 unchar target = SCpnt->device->id; 1358 unchar lun = SCpnt->device->lun; 1359 int mbo; 1360 struct ccb *ccb; 1361 unchar ahacmd = CMD_START_SCSI; 1362 1363 ccb = HOSTDATA(SCpnt->device->host)->ccb; 1364 mb = HOSTDATA(SCpnt->device->host)->mb; 1365 1366 spin_lock_irqsave(&aha1542_lock, flags); 1367 mbo = HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used + 1; 1368 if (mbo >= AHA1542_MAILBOXES) 1369 mbo = 0; 1370 1371 do { 1372 if (mb[mbo].status == 0 && HOSTDATA(SCpnt->device->host)->SCint[mbo] == NULL) 1373 break; 1374 mbo++; 1375 if (mbo >= AHA1542_MAILBOXES) 1376 mbo = 0; 1377 } while (mbo != HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used); 1378 1379 if (mb[mbo].status || HOSTDATA(SCpnt->device->host)->SCint[mbo]) 1380 panic("Unable to find empty mailbox for aha1542.\n"); 1381 1382 HOSTDATA(SCpnt->device->host)->SCint[mbo] = SCpnt; /* This will effectively 1383 prevent someone else from 1384 screwing with this cdb. */ 1385 1386 HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used = mbo; 1387 spin_unlock_irqrestore(&aha1542_lock, flags); 1388 1389 any2scsi(mb[mbo].ccbptr, SCSI_BUF_PA(&ccb[mbo])); /* This gets trashed for some reason */ 1390 1391 memset(&ccb[mbo], 0, sizeof(struct ccb)); 1392 1393 ccb[mbo].op = 0x81; /* BUS DEVICE RESET */ 1394 1395 ccb[mbo].idlun = (target & 7) << 5 | (lun & 7); /*SCSI Target Id */ 1396 1397 ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; 1398 ccb[mbo].commlinkid = 0; 1399 1400 /* 1401 * Now tell the 1542 to flush all pending commands for this 1402 * target 1403 */ 1404 aha1542_out(SCpnt->device->host->io_port, &ahacmd, 1); 1405 1406 scmd_printk(KERN_WARNING, SCpnt, 1407 "Trying device reset for target\n"); 1408 1409 return SUCCESS; 1410 1411 1412 #ifdef ERIC_neverdef 1413 /* 1414 * With the 1542 we apparently never get an interrupt to 1415 * acknowledge a device reset being sent. Then again, Leonard 1416 * says we are doing this wrong in the first place... 1417 * 1418 * Take a wait and see attitude. If we get spurious interrupts, 1419 * then the device reset is doing something sane and useful, and 1420 * we will wait for the interrupt to post completion. 1421 */ 1422 printk(KERN_WARNING "Sent BUS DEVICE RESET to target %d\n", SCpnt->target); 1423 1424 /* 1425 * Free the command block for all commands running on this 1426 * target... 1427 */ 1428 for (i = 0; i < AHA1542_MAILBOXES; i++) { 1429 if (HOSTDATA(SCpnt->host)->SCint[i] && 1430 HOSTDATA(SCpnt->host)->SCint[i]->target == SCpnt->target) { 1431 Scsi_Cmnd *SCtmp; 1432 SCtmp = HOSTDATA(SCpnt->host)->SCint[i]; 1433 kfree(SCtmp->host_scribble); 1434 SCtmp->host_scribble = NULL; 1435 HOSTDATA(SCpnt->host)->SCint[i] = NULL; 1436 HOSTDATA(SCpnt->host)->mb[i].status = 0; 1437 } 1438 } 1439 return SUCCESS; 1440 1441 return FAILED; 1442 #endif /* ERIC_neverdef */ 1443 } 1444 1445 static int aha1542_bus_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(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 1466 spin_lock_irq(SCpnt->device->host->host_lock); 1467 1468 WAIT(STATUS(SCpnt->device->host->io_port), 1469 STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); 1470 1471 /* 1472 * Now try to pick up the pieces. For all pending commands, 1473 * free any internal data structures, and basically clear things 1474 * out. We do not try and restart any commands or anything - 1475 * the strategy handler takes care of that crap. 1476 */ 1477 printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->device->host->host_no); 1478 1479 for (i = 0; i < AHA1542_MAILBOXES; i++) { 1480 if (HOSTDATA(SCpnt->device->host)->SCint[i] != NULL) { 1481 Scsi_Cmnd *SCtmp; 1482 SCtmp = HOSTDATA(SCpnt->device->host)->SCint[i]; 1483 1484 1485 if (SCtmp->device->soft_reset) { 1486 /* 1487 * If this device implements the soft reset option, 1488 * then it is still holding onto the command, and 1489 * may yet complete it. In this case, we don't 1490 * flush the data. 1491 */ 1492 continue; 1493 } 1494 kfree(SCtmp->host_scribble); 1495 SCtmp->host_scribble = NULL; 1496 HOSTDATA(SCpnt->device->host)->SCint[i] = NULL; 1497 HOSTDATA(SCpnt->device->host)->mb[i].status = 0; 1498 } 1499 } 1500 1501 spin_unlock_irq(SCpnt->device->host->host_lock); 1502 return SUCCESS; 1503 1504 fail: 1505 spin_unlock_irq(SCpnt->device->host->host_lock); 1506 return FAILED; 1507 } 1508 1509 static int aha1542_host_reset(Scsi_Cmnd * SCpnt) 1510 { 1511 int i; 1512 1513 /* 1514 * This does a scsi reset for all devices on the bus. 1515 * In principle, we could also reset the 1542 - should 1516 * we do this? Try this first, and we can add that later 1517 * if it turns out to be useful. 1518 */ 1519 outb(HRST | SCRST, CONTROL(SCpnt->device->host->io_port)); 1520 1521 /* 1522 * Wait for the thing to settle down a bit. Unfortunately 1523 * this is going to basically lock up the machine while we 1524 * wait for this to complete. To be 100% correct, we need to 1525 * check for timeout, and if we are doing something like this 1526 * we are pretty desperate anyways. 1527 */ 1528 ssleep(4); 1529 spin_lock_irq(SCpnt->device->host->host_lock); 1530 1531 WAIT(STATUS(SCpnt->device->host->io_port), 1532 STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); 1533 1534 /* 1535 * We need to do this too before the 1542 can interact with 1536 * us again. 1537 */ 1538 setup_mailboxes(SCpnt->device->host->io_port, SCpnt->device->host); 1539 1540 /* 1541 * Now try to pick up the pieces. For all pending commands, 1542 * free any internal data structures, and basically clear things 1543 * out. We do not try and restart any commands or anything - 1544 * the strategy handler takes care of that crap. 1545 */ 1546 printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->device->host->host_no); 1547 1548 for (i = 0; i < AHA1542_MAILBOXES; i++) { 1549 if (HOSTDATA(SCpnt->device->host)->SCint[i] != NULL) { 1550 Scsi_Cmnd *SCtmp; 1551 SCtmp = HOSTDATA(SCpnt->device->host)->SCint[i]; 1552 1553 if (SCtmp->device->soft_reset) { 1554 /* 1555 * If this device implements the soft reset option, 1556 * then it is still holding onto the command, and 1557 * may yet complete it. In this case, we don't 1558 * flush the data. 1559 */ 1560 continue; 1561 } 1562 kfree(SCtmp->host_scribble); 1563 SCtmp->host_scribble = NULL; 1564 HOSTDATA(SCpnt->device->host)->SCint[i] = NULL; 1565 HOSTDATA(SCpnt->device->host)->mb[i].status = 0; 1566 } 1567 } 1568 1569 spin_unlock_irq(SCpnt->device->host->host_lock); 1570 return SUCCESS; 1571 1572 fail: 1573 spin_unlock_irq(SCpnt->device->host->host_lock); 1574 return FAILED; 1575 } 1576 1577 #if 0 1578 /* 1579 * These are the old error handling routines. They are only temporarily 1580 * here while we play with the new error handling code. 1581 */ 1582 static int aha1542_old_abort(Scsi_Cmnd * SCpnt) 1583 { 1584 #if 0 1585 unchar ahacmd = CMD_START_SCSI; 1586 unsigned long flags; 1587 struct mailbox *mb; 1588 int mbi, mbo, i; 1589 1590 printk(KERN_DEBUG "In aha1542_abort: %x %x\n", 1591 inb(STATUS(SCpnt->host->io_port)), 1592 inb(INTRFLAGS(SCpnt->host->io_port))); 1593 1594 spin_lock_irqsave(&aha1542_lock, flags); 1595 mb = HOSTDATA(SCpnt->host)->mb; 1596 mbi = HOSTDATA(SCpnt->host)->aha1542_last_mbi_used + 1; 1597 if (mbi >= 2 * AHA1542_MAILBOXES) 1598 mbi = AHA1542_MAILBOXES; 1599 1600 do { 1601 if (mb[mbi].status != 0) 1602 break; 1603 mbi++; 1604 if (mbi >= 2 * AHA1542_MAILBOXES) 1605 mbi = AHA1542_MAILBOXES; 1606 } while (mbi != HOSTDATA(SCpnt->host)->aha1542_last_mbi_used); 1607 spin_unlock_irqrestore(&aha1542_lock, flags); 1608 1609 if (mb[mbi].status) { 1610 printk(KERN_ERR "Lost interrupt discovered on irq %d - attempting to recover\n", 1611 SCpnt->host->irq); 1612 aha1542_intr_handle(SCpnt->host, NULL); 1613 return 0; 1614 } 1615 /* OK, no lost interrupt. Try looking to see how many pending commands 1616 we think we have. */ 1617 1618 for (i = 0; i < AHA1542_MAILBOXES; i++) 1619 if (HOSTDATA(SCpnt->host)->SCint[i]) { 1620 if (HOSTDATA(SCpnt->host)->SCint[i] == SCpnt) { 1621 printk(KERN_ERR "Timed out command pending for %s\n", 1622 SCpnt->request->rq_disk ? 1623 SCpnt->request->rq_disk->disk_name : "?" 1624 ); 1625 if (HOSTDATA(SCpnt->host)->mb[i].status) { 1626 printk(KERN_ERR "OGMB still full - restarting\n"); 1627 aha1542_out(SCpnt->host->io_port, &ahacmd, 1); 1628 }; 1629 } else 1630 printk(KERN_ERR "Other pending command %s\n", 1631 SCpnt->request->rq_disk ? 1632 SCpnt->request->rq_disk->disk_name : "?" 1633 ); 1634 } 1635 #endif 1636 1637 DEB(printk("aha1542_abort\n")); 1638 #if 0 1639 spin_lock_irqsave(&aha1542_lock, flags); 1640 for (mbo = 0; mbo < AHA1542_MAILBOXES; mbo++) { 1641 if (SCpnt == HOSTDATA(SCpnt->host)->SCint[mbo]) { 1642 mb[mbo].status = 2; /* Abort command */ 1643 aha1542_out(SCpnt->host->io_port, &ahacmd, 1); /* start scsi command */ 1644 spin_unlock_irqrestore(&aha1542_lock, flags); 1645 break; 1646 } 1647 } 1648 if (AHA1542_MAILBOXES == mbo) 1649 spin_unlock_irqrestore(&aha1542_lock, flags); 1650 #endif 1651 return SCSI_ABORT_SNOOZE; 1652 } 1653 1654 /* We do not implement a reset function here, but the upper level code 1655 assumes that it will get some kind of response for the command in 1656 SCpnt. We must oblige, or the command will hang the scsi system. 1657 For a first go, we assume that the 1542 notifies us with all of the 1658 pending commands (it does implement soft reset, after all). */ 1659 1660 static int aha1542_old_reset(Scsi_Cmnd * SCpnt, unsigned int reset_flags) 1661 { 1662 unchar ahacmd = CMD_START_SCSI; 1663 int i; 1664 1665 /* 1666 * See if a bus reset was suggested. 1667 */ 1668 if (reset_flags & SCSI_RESET_SUGGEST_BUS_RESET) { 1669 /* 1670 * This does a scsi reset for all devices on the bus. 1671 * In principle, we could also reset the 1542 - should 1672 * we do this? Try this first, and we can add that later 1673 * if it turns out to be useful. 1674 */ 1675 outb(HRST | SCRST, CONTROL(SCpnt->host->io_port)); 1676 1677 /* 1678 * Wait for the thing to settle down a bit. Unfortunately 1679 * this is going to basically lock up the machine while we 1680 * wait for this to complete. To be 100% correct, we need to 1681 * check for timeout, and if we are doing something like this 1682 * we are pretty desperate anyways. 1683 */ 1684 WAIT(STATUS(SCpnt->host->io_port), 1685 STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); 1686 1687 /* 1688 * We need to do this too before the 1542 can interact with 1689 * us again. 1690 */ 1691 setup_mailboxes(SCpnt->host->io_port, SCpnt->host); 1692 1693 /* 1694 * Now try to pick up the pieces. Restart all commands 1695 * that are currently active on the bus, and reset all of 1696 * the datastructures. We have some time to kill while 1697 * things settle down, so print a nice message. 1698 */ 1699 printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->host->host_no); 1700 1701 for (i = 0; i < AHA1542_MAILBOXES; i++) 1702 if (HOSTDATA(SCpnt->host)->SCint[i] != NULL) { 1703 Scsi_Cmnd *SCtmp; 1704 SCtmp = HOSTDATA(SCpnt->host)->SCint[i]; 1705 SCtmp->result = DID_RESET << 16; 1706 kfree(SCtmp->host_scribble); 1707 SCtmp->host_scribble = NULL; 1708 printk(KERN_WARNING "Sending DID_RESET for target %d\n", SCpnt->target); 1709 SCtmp->scsi_done(SCpnt); 1710 1711 HOSTDATA(SCpnt->host)->SCint[i] = NULL; 1712 HOSTDATA(SCpnt->host)->mb[i].status = 0; 1713 } 1714 /* 1715 * Now tell the mid-level code what we did here. Since 1716 * we have restarted all of the outstanding commands, 1717 * then report SUCCESS. 1718 */ 1719 return (SCSI_RESET_SUCCESS | SCSI_RESET_BUS_RESET); 1720 fail: 1721 printk(KERN_CRIT "aha1542.c: Unable to perform hard reset.\n"); 1722 printk(KERN_CRIT "Power cycle machine to reset\n"); 1723 return (SCSI_RESET_ERROR | SCSI_RESET_BUS_RESET); 1724 1725 1726 } else { 1727 /* This does a selective reset of just the one device */ 1728 /* First locate the ccb for this command */ 1729 for (i = 0; i < AHA1542_MAILBOXES; i++) 1730 if (HOSTDATA(SCpnt->host)->SCint[i] == SCpnt) { 1731 HOSTDATA(SCpnt->host)->ccb[i].op = 0x81; /* BUS DEVICE RESET */ 1732 /* Now tell the 1542 to flush all pending commands for this target */ 1733 aha1542_out(SCpnt->host->io_port, &ahacmd, 1); 1734 1735 /* Here is the tricky part. What to do next. Do we get an interrupt 1736 for the commands that we aborted with the specified target, or 1737 do we generate this on our own? Try it without first and see 1738 what happens */ 1739 printk(KERN_WARNING "Sent BUS DEVICE RESET to target %d\n", SCpnt->target); 1740 1741 /* If the first does not work, then try the second. I think the 1742 first option is more likely to be correct. Free the command 1743 block for all commands running on this target... */ 1744 for (i = 0; i < AHA1542_MAILBOXES; i++) 1745 if (HOSTDATA(SCpnt->host)->SCint[i] && 1746 HOSTDATA(SCpnt->host)->SCint[i]->target == SCpnt->target) { 1747 Scsi_Cmnd *SCtmp; 1748 SCtmp = HOSTDATA(SCpnt->host)->SCint[i]; 1749 SCtmp->result = DID_RESET << 16; 1750 kfree(SCtmp->host_scribble); 1751 SCtmp->host_scribble = NULL; 1752 printk(KERN_WARNING "Sending DID_RESET for target %d\n", SCpnt->target); 1753 SCtmp->scsi_done(SCpnt); 1754 1755 HOSTDATA(SCpnt->host)->SCint[i] = NULL; 1756 HOSTDATA(SCpnt->host)->mb[i].status = 0; 1757 } 1758 return SCSI_RESET_SUCCESS; 1759 } 1760 } 1761 /* No active command at this time, so this means that each time we got 1762 some kind of response the last time through. Tell the mid-level code 1763 to request sense information in order to decide what to do next. */ 1764 return SCSI_RESET_PUNT; 1765 } 1766 #endif /* end of big comment block around old_abort + old_reset */ 1767 1768 static int aha1542_biosparam(struct scsi_device *sdev, 1769 struct block_device *bdev, sector_t capacity, int *ip) 1770 { 1771 int translation_algorithm; 1772 int size = capacity; 1773 1774 translation_algorithm = HOSTDATA(sdev->host)->bios_translation; 1775 1776 if ((size >> 11) > 1024 && translation_algorithm == BIOS_TRANSLATION_25563) { 1777 /* Please verify that this is the same as what DOS returns */ 1778 ip[0] = 255; 1779 ip[1] = 63; 1780 ip[2] = size / 255 / 63; 1781 } else { 1782 ip[0] = 64; 1783 ip[1] = 32; 1784 ip[2] = size >> 11; 1785 } 1786 1787 return 0; 1788 } 1789 MODULE_LICENSE("GPL"); 1790 1791 1792 static struct scsi_host_template driver_template = { 1793 .proc_name = "aha1542", 1794 .name = "Adaptec 1542", 1795 .detect = aha1542_detect, 1796 .release = aha1542_release, 1797 .queuecommand = aha1542_queuecommand, 1798 .eh_device_reset_handler= aha1542_dev_reset, 1799 .eh_bus_reset_handler = aha1542_bus_reset, 1800 .eh_host_reset_handler = aha1542_host_reset, 1801 .bios_param = aha1542_biosparam, 1802 .can_queue = AHA1542_MAILBOXES, 1803 .this_id = 7, 1804 .sg_tablesize = AHA1542_SCATTER, 1805 .cmd_per_lun = AHA1542_CMDLUN, 1806 .unchecked_isa_dma = 1, 1807 .use_clustering = ENABLE_CLUSTERING, 1808 }; 1809 #include "scsi_module.c" 1810