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 if (SCtmp->host_scribble) { 547 kfree(SCtmp->host_scribble); 548 SCtmp->host_scribble = NULL; 549 } 550 /* Fetch the sense data, and tuck it away, in the required slot. The 551 Adaptec automatically fetches it, and there is no guarantee that 552 we will still have it in the cdb when we come back */ 553 if (ccb[mbo].tarstat == 2) 554 memcpy(SCtmp->sense_buffer, &ccb[mbo].cdb[ccb[mbo].cdblen], 555 sizeof(SCtmp->sense_buffer)); 556 557 558 /* is there mail :-) */ 559 560 /* more error checking left out here */ 561 if (mbistatus != 1) 562 /* This is surely wrong, but I don't know what's right */ 563 errstatus = makecode(ccb[mbo].hastat, ccb[mbo].tarstat); 564 else 565 errstatus = 0; 566 567 #ifdef DEBUG 568 if (errstatus) 569 printk(KERN_DEBUG "(aha1542 error:%x %x %x) ", errstatus, 570 ccb[mbo].hastat, ccb[mbo].tarstat); 571 #endif 572 573 if (ccb[mbo].tarstat == 2) { 574 #ifdef DEBUG 575 int i; 576 #endif 577 DEB(printk("aha1542_intr_handle: sense:")); 578 #ifdef DEBUG 579 for (i = 0; i < 12; i++) 580 printk("%02x ", ccb[mbo].cdb[ccb[mbo].cdblen + i]); 581 printk("\n"); 582 #endif 583 /* 584 DEB(printk("aha1542_intr_handle: buf:")); 585 for (i = 0; i < bufflen; i++) 586 printk("%02x ", ((unchar *)buff)[i]); 587 printk("\n"); 588 */ 589 } 590 DEB(if (errstatus) printk("aha1542_intr_handle: returning %6x\n", errstatus)); 591 SCtmp->result = errstatus; 592 HOSTDATA(shost)->SCint[mbo] = NULL; /* This effectively frees up the mailbox slot, as 593 far as queuecommand is concerned */ 594 my_done(SCtmp); 595 number_serviced++; 596 }; 597 } 598 599 static int aha1542_queuecommand(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *)) 600 { 601 unchar ahacmd = CMD_START_SCSI; 602 unchar direction; 603 unchar *cmd = (unchar *) SCpnt->cmnd; 604 unchar target = SCpnt->device->id; 605 unchar lun = SCpnt->device->lun; 606 unsigned long flags; 607 void *buff = SCpnt->request_buffer; 608 int bufflen = SCpnt->request_bufflen; 609 int mbo; 610 struct mailbox *mb; 611 struct ccb *ccb; 612 613 DEB(int i); 614 615 mb = HOSTDATA(SCpnt->device->host)->mb; 616 ccb = HOSTDATA(SCpnt->device->host)->ccb; 617 618 DEB(if (target > 1) { 619 SCpnt->result = DID_TIME_OUT << 16; 620 done(SCpnt); return 0; 621 } 622 ); 623 624 if (*cmd == REQUEST_SENSE) { 625 /* Don't do the command - we have the sense data already */ 626 #if 0 627 /* scsi_request_sense() provides a buffer of size 256, 628 so there is no reason to expect equality */ 629 if (bufflen != sizeof(SCpnt->sense_buffer)) 630 printk(KERN_CRIT "aha1542: Wrong buffer length supplied " 631 "for request sense (%d)\n", bufflen); 632 #endif 633 SCpnt->result = 0; 634 done(SCpnt); 635 return 0; 636 } 637 #ifdef DEBUG 638 if (*cmd == READ_10 || *cmd == WRITE_10) 639 i = xscsi2int(cmd + 2); 640 else if (*cmd == READ_6 || *cmd == WRITE_6) 641 i = scsi2int(cmd + 2); 642 else 643 i = -1; 644 if (done) 645 printk(KERN_DEBUG "aha1542_queuecommand: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen); 646 else 647 printk(KERN_DEBUG "aha1542_command: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen); 648 aha1542_stat(); 649 printk(KERN_DEBUG "aha1542_queuecommand: dumping scsi cmd:"); 650 for (i = 0; i < SCpnt->cmd_len; i++) 651 printk("%02x ", cmd[i]); 652 printk("\n"); 653 if (*cmd == WRITE_10 || *cmd == WRITE_6) 654 return 0; /* we are still testing, so *don't* write */ 655 #endif 656 /* Use the outgoing mailboxes in a round-robin fashion, because this 657 is how the host adapter will scan for them */ 658 659 spin_lock_irqsave(&aha1542_lock, flags); 660 mbo = HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used + 1; 661 if (mbo >= AHA1542_MAILBOXES) 662 mbo = 0; 663 664 do { 665 if (mb[mbo].status == 0 && HOSTDATA(SCpnt->device->host)->SCint[mbo] == NULL) 666 break; 667 mbo++; 668 if (mbo >= AHA1542_MAILBOXES) 669 mbo = 0; 670 } while (mbo != HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used); 671 672 if (mb[mbo].status || HOSTDATA(SCpnt->device->host)->SCint[mbo]) 673 panic("Unable to find empty mailbox for aha1542.\n"); 674 675 HOSTDATA(SCpnt->device->host)->SCint[mbo] = SCpnt; /* This will effectively prevent someone else from 676 screwing with this cdb. */ 677 678 HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used = mbo; 679 spin_unlock_irqrestore(&aha1542_lock, flags); 680 681 #ifdef DEBUG 682 printk(KERN_DEBUG "Sending command (%d %x)...", mbo, done); 683 #endif 684 685 any2scsi(mb[mbo].ccbptr, SCSI_BUF_PA(&ccb[mbo])); /* This gets trashed for some reason */ 686 687 memset(&ccb[mbo], 0, sizeof(struct ccb)); 688 689 ccb[mbo].cdblen = SCpnt->cmd_len; 690 691 direction = 0; 692 if (*cmd == READ_10 || *cmd == READ_6) 693 direction = 8; 694 else if (*cmd == WRITE_10 || *cmd == WRITE_6) 695 direction = 16; 696 697 memcpy(ccb[mbo].cdb, cmd, ccb[mbo].cdblen); 698 699 if (SCpnt->use_sg) { 700 struct scatterlist *sgpnt; 701 struct chain *cptr; 702 #ifdef DEBUG 703 unsigned char *ptr; 704 #endif 705 int i; 706 ccb[mbo].op = 2; /* SCSI Initiator Command w/scatter-gather */ 707 SCpnt->host_scribble = (unsigned char *) kmalloc(512, GFP_KERNEL | GFP_DMA); 708 sgpnt = (struct scatterlist *) SCpnt->request_buffer; 709 cptr = (struct chain *) SCpnt->host_scribble; 710 if (cptr == NULL) { 711 /* free the claimed mailbox slot */ 712 HOSTDATA(SCpnt->device->host)->SCint[mbo] = NULL; 713 return SCSI_MLQUEUE_HOST_BUSY; 714 } 715 for (i = 0; i < SCpnt->use_sg; i++) { 716 if (sgpnt[i].length == 0 || SCpnt->use_sg > 16 || 717 (((int) sgpnt[i].offset) & 1) || (sgpnt[i].length & 1)) { 718 unsigned char *ptr; 719 printk(KERN_CRIT "Bad segment list supplied to aha1542.c (%d, %d)\n", SCpnt->use_sg, i); 720 for (i = 0; i < SCpnt->use_sg; i++) { 721 printk(KERN_CRIT "%d: %p %d\n", i, 722 (page_address(sgpnt[i].page) + 723 sgpnt[i].offset), 724 sgpnt[i].length); 725 }; 726 printk(KERN_CRIT "cptr %x: ", (unsigned int) cptr); 727 ptr = (unsigned char *) &cptr[i]; 728 for (i = 0; i < 18; i++) 729 printk("%02x ", ptr[i]); 730 panic("Foooooooood fight!"); 731 }; 732 any2scsi(cptr[i].dataptr, SCSI_SG_PA(&sgpnt[i])); 733 if (SCSI_SG_PA(&sgpnt[i]) + sgpnt[i].length - 1 > ISA_DMA_THRESHOLD) 734 BAD_SG_DMA(SCpnt, sgpnt, SCpnt->use_sg, i); 735 any2scsi(cptr[i].datalen, sgpnt[i].length); 736 }; 737 any2scsi(ccb[mbo].datalen, SCpnt->use_sg * sizeof(struct chain)); 738 any2scsi(ccb[mbo].dataptr, SCSI_BUF_PA(cptr)); 739 #ifdef DEBUG 740 printk("cptr %x: ", cptr); 741 ptr = (unsigned char *) cptr; 742 for (i = 0; i < 18; i++) 743 printk("%02x ", ptr[i]); 744 #endif 745 } else { 746 ccb[mbo].op = 0; /* SCSI Initiator Command */ 747 SCpnt->host_scribble = NULL; 748 any2scsi(ccb[mbo].datalen, bufflen); 749 if (buff && SCSI_BUF_PA(buff + bufflen - 1) > ISA_DMA_THRESHOLD) 750 BAD_DMA(buff, bufflen); 751 any2scsi(ccb[mbo].dataptr, SCSI_BUF_PA(buff)); 752 }; 753 ccb[mbo].idlun = (target & 7) << 5 | direction | (lun & 7); /*SCSI Target Id */ 754 ccb[mbo].rsalen = 16; 755 ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; 756 ccb[mbo].commlinkid = 0; 757 758 #ifdef DEBUG 759 { 760 int i; 761 printk(KERN_DEBUG "aha1542_command: sending.. "); 762 for (i = 0; i < sizeof(ccb[mbo]) - 10; i++) 763 printk("%02x ", ((unchar *) & ccb[mbo])[i]); 764 }; 765 #endif 766 767 if (done) { 768 DEB(printk("aha1542_queuecommand: now waiting for interrupt "); 769 aha1542_stat()); 770 SCpnt->scsi_done = done; 771 mb[mbo].status = 1; 772 aha1542_out(SCpnt->device->host->io_port, &ahacmd, 1); /* start scsi command */ 773 DEB(aha1542_stat()); 774 } else 775 printk("aha1542_queuecommand: done can't be NULL\n"); 776 777 return 0; 778 } 779 780 /* Initialize mailboxes */ 781 static void setup_mailboxes(int bse, struct Scsi_Host *shpnt) 782 { 783 int i; 784 struct mailbox *mb; 785 struct ccb *ccb; 786 787 unchar cmd[5] = { CMD_MBINIT, AHA1542_MAILBOXES, 0, 0, 0}; 788 789 mb = HOSTDATA(shpnt)->mb; 790 ccb = HOSTDATA(shpnt)->ccb; 791 792 for (i = 0; i < AHA1542_MAILBOXES; i++) { 793 mb[i].status = mb[AHA1542_MAILBOXES + i].status = 0; 794 any2scsi(mb[i].ccbptr, SCSI_BUF_PA(&ccb[i])); 795 }; 796 aha1542_intr_reset(bse); /* reset interrupts, so they don't block */ 797 any2scsi((cmd + 2), SCSI_BUF_PA(mb)); 798 aha1542_out(bse, cmd, 5); 799 WAIT(INTRFLAGS(bse), INTRMASK, HACC, 0); 800 while (0) { 801 fail: 802 printk(KERN_ERR "aha1542_detect: failed setting up mailboxes\n"); 803 } 804 aha1542_intr_reset(bse); 805 } 806 807 static int __init aha1542_getconfig(int base_io, unsigned char *irq_level, unsigned char *dma_chan, unsigned char *scsi_id) 808 { 809 unchar inquiry_cmd[] = {CMD_RETCONF}; 810 unchar inquiry_result[3]; 811 int i; 812 i = inb(STATUS(base_io)); 813 if (i & DF) { 814 i = inb(DATA(base_io)); 815 }; 816 aha1542_out(base_io, inquiry_cmd, 1); 817 aha1542_in(base_io, inquiry_result, 3); 818 WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); 819 while (0) { 820 fail: 821 printk(KERN_ERR "aha1542_detect: query board settings\n"); 822 } 823 aha1542_intr_reset(base_io); 824 switch (inquiry_result[0]) { 825 case 0x80: 826 *dma_chan = 7; 827 break; 828 case 0x40: 829 *dma_chan = 6; 830 break; 831 case 0x20: 832 *dma_chan = 5; 833 break; 834 case 0x01: 835 *dma_chan = 0; 836 break; 837 case 0: 838 /* This means that the adapter, although Adaptec 1542 compatible, doesn't use a DMA channel. 839 Currently only aware of the BusLogic BT-445S VL-Bus adapter which needs this. */ 840 *dma_chan = 0xFF; 841 break; 842 default: 843 printk(KERN_ERR "Unable to determine Adaptec DMA priority. Disabling board\n"); 844 return -1; 845 }; 846 switch (inquiry_result[1]) { 847 case 0x40: 848 *irq_level = 15; 849 break; 850 case 0x20: 851 *irq_level = 14; 852 break; 853 case 0x8: 854 *irq_level = 12; 855 break; 856 case 0x4: 857 *irq_level = 11; 858 break; 859 case 0x2: 860 *irq_level = 10; 861 break; 862 case 0x1: 863 *irq_level = 9; 864 break; 865 default: 866 printk(KERN_ERR "Unable to determine Adaptec IRQ level. Disabling board\n"); 867 return -1; 868 }; 869 *scsi_id = inquiry_result[2] & 7; 870 return 0; 871 } 872 873 /* This function should only be called for 1542C boards - we can detect 874 the special firmware settings and unlock the board */ 875 876 static int __init aha1542_mbenable(int base) 877 { 878 static unchar mbenable_cmd[3]; 879 static unchar mbenable_result[2]; 880 int retval; 881 882 retval = BIOS_TRANSLATION_6432; 883 884 mbenable_cmd[0] = CMD_EXTBIOS; 885 aha1542_out(base, mbenable_cmd, 1); 886 if (aha1542_in1(base, mbenable_result, 2)) 887 return retval; 888 WAITd(INTRFLAGS(base), INTRMASK, HACC, 0, 100); 889 aha1542_intr_reset(base); 890 891 if ((mbenable_result[0] & 0x08) || mbenable_result[1]) { 892 mbenable_cmd[0] = CMD_MBENABLE; 893 mbenable_cmd[1] = 0; 894 mbenable_cmd[2] = mbenable_result[1]; 895 896 if ((mbenable_result[0] & 0x08) && (mbenable_result[1] & 0x03)) 897 retval = BIOS_TRANSLATION_25563; 898 899 aha1542_out(base, mbenable_cmd, 3); 900 WAIT(INTRFLAGS(base), INTRMASK, HACC, 0); 901 }; 902 while (0) { 903 fail: 904 printk(KERN_ERR "aha1542_mbenable: Mailbox init failed\n"); 905 } 906 aha1542_intr_reset(base); 907 return retval; 908 } 909 910 /* Query the board to find out if it is a 1542 or a 1740, or whatever. */ 911 static int __init aha1542_query(int base_io, int *transl) 912 { 913 unchar inquiry_cmd[] = {CMD_INQUIRY}; 914 unchar inquiry_result[4]; 915 int i; 916 i = inb(STATUS(base_io)); 917 if (i & DF) { 918 i = inb(DATA(base_io)); 919 }; 920 aha1542_out(base_io, inquiry_cmd, 1); 921 aha1542_in(base_io, inquiry_result, 4); 922 WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); 923 while (0) { 924 fail: 925 printk(KERN_ERR "aha1542_detect: query card type\n"); 926 } 927 aha1542_intr_reset(base_io); 928 929 *transl = BIOS_TRANSLATION_6432; /* Default case */ 930 931 /* For an AHA1740 series board, we ignore the board since there is a 932 hardware bug which can lead to wrong blocks being returned if the board 933 is operating in the 1542 emulation mode. Since there is an extended mode 934 driver, we simply ignore the board and let the 1740 driver pick it up. 935 */ 936 937 if (inquiry_result[0] == 0x43) { 938 printk(KERN_INFO "aha1542.c: Emulation mode not supported for AHA 174N hardware.\n"); 939 return 1; 940 }; 941 942 /* Always call this - boards that do not support extended bios translation 943 will ignore the command, and we will set the proper default */ 944 945 *transl = aha1542_mbenable(base_io); 946 947 return 0; 948 } 949 950 #ifndef MODULE 951 static char *setup_str[MAXBOARDS] __initdata; 952 static int setup_idx = 0; 953 954 static void __init aha1542_setup(char *str, int *ints) 955 { 956 const char *ahausage = "aha1542: usage: aha1542=<PORTBASE>[,<BUSON>,<BUSOFF>[,<DMASPEED>]]\n"; 957 int setup_portbase; 958 959 if (setup_idx >= MAXBOARDS) { 960 printk(KERN_ERR "aha1542: aha1542_setup called too many times! Bad LILO params ?\n"); 961 printk(KERN_ERR " Entryline 1: %s\n", setup_str[0]); 962 printk(KERN_ERR " Entryline 2: %s\n", setup_str[1]); 963 printk(KERN_ERR " This line: %s\n", str); 964 return; 965 } 966 if (ints[0] < 1 || ints[0] > 4) { 967 printk(KERN_ERR "aha1542: %s\n", str); 968 printk(ahausage); 969 printk(KERN_ERR "aha1542: Wrong parameters may cause system malfunction.. We try anyway..\n"); 970 } 971 setup_called[setup_idx] = ints[0]; 972 setup_str[setup_idx] = str; 973 974 setup_portbase = ints[0] >= 1 ? ints[1] : 0; /* Preserve the default value.. */ 975 setup_buson[setup_idx] = ints[0] >= 2 ? ints[2] : 7; 976 setup_busoff[setup_idx] = ints[0] >= 3 ? ints[3] : 5; 977 if (ints[0] >= 4) 978 { 979 int atbt = -1; 980 switch (ints[4]) { 981 case 5: 982 atbt = 0x00; 983 break; 984 case 6: 985 atbt = 0x04; 986 break; 987 case 7: 988 atbt = 0x01; 989 break; 990 case 8: 991 atbt = 0x02; 992 break; 993 case 10: 994 atbt = 0x03; 995 break; 996 default: 997 printk(KERN_ERR "aha1542: %s\n", str); 998 printk(ahausage); 999 printk(KERN_ERR "aha1542: Valid values for DMASPEED are 5-8, 10 MB/s. Using jumper defaults.\n"); 1000 break; 1001 } 1002 setup_dmaspeed[setup_idx] = atbt; 1003 } 1004 if (setup_portbase != 0) 1005 bases[setup_idx] = setup_portbase; 1006 1007 ++setup_idx; 1008 } 1009 1010 static int __init do_setup(char *str) 1011 { 1012 int ints[5]; 1013 1014 int count=setup_idx; 1015 1016 get_options(str, sizeof(ints)/sizeof(int), ints); 1017 aha1542_setup(str,ints); 1018 1019 return count<setup_idx; 1020 } 1021 1022 __setup("aha1542=",do_setup); 1023 #endif 1024 1025 /* return non-zero on detection */ 1026 static int __init aha1542_detect(Scsi_Host_Template * tpnt) 1027 { 1028 unsigned char dma_chan; 1029 unsigned char irq_level; 1030 unsigned char scsi_id; 1031 unsigned long flags; 1032 unsigned int base_io; 1033 int trans; 1034 struct Scsi_Host *shpnt = NULL; 1035 int count = 0; 1036 int indx; 1037 1038 DEB(printk("aha1542_detect: \n")); 1039 1040 tpnt->proc_name = "aha1542"; 1041 1042 #ifdef MODULE 1043 bases[0] = aha1542[0]; 1044 setup_buson[0] = aha1542[1]; 1045 setup_busoff[0] = aha1542[2]; 1046 { 1047 int atbt = -1; 1048 switch (aha1542[3]) { 1049 case 5: 1050 atbt = 0x00; 1051 break; 1052 case 6: 1053 atbt = 0x04; 1054 break; 1055 case 7: 1056 atbt = 0x01; 1057 break; 1058 case 8: 1059 atbt = 0x02; 1060 break; 1061 case 10: 1062 atbt = 0x03; 1063 break; 1064 }; 1065 setup_dmaspeed[0] = atbt; 1066 } 1067 #endif 1068 1069 /* 1070 * Find MicroChannel cards (AHA1640) 1071 */ 1072 #ifdef CONFIG_MCA_LEGACY 1073 if(MCA_bus) { 1074 int slot = 0; 1075 int pos = 0; 1076 1077 for (indx = 0; (slot != MCA_NOTFOUND) && 1078 (indx < sizeof(bases)/sizeof(bases[0])); indx++) { 1079 1080 if (bases[indx]) 1081 continue; 1082 1083 /* Detect only AHA-1640 cards -- MCA ID 0F1F */ 1084 slot = mca_find_unused_adapter(0x0f1f, slot); 1085 if (slot == MCA_NOTFOUND) 1086 break; 1087 1088 1089 /* Found one */ 1090 pos = mca_read_stored_pos(slot, 3); 1091 1092 /* Decode address */ 1093 if (pos & 0x80) { 1094 if (pos & 0x02) { 1095 if (pos & 0x01) 1096 bases[indx] = 0x334; 1097 else 1098 bases[indx] = 0x234; 1099 } else { 1100 if (pos & 0x01) 1101 bases[indx] = 0x134; 1102 } 1103 } else { 1104 if (pos & 0x02) { 1105 if (pos & 0x01) 1106 bases[indx] = 0x330; 1107 else 1108 bases[indx] = 0x230; 1109 } else { 1110 if (pos & 0x01) 1111 bases[indx] = 0x130; 1112 } 1113 } 1114 1115 /* No need to decode IRQ and Arb level -- those are 1116 * read off the card later. 1117 */ 1118 printk(KERN_INFO "Found an AHA-1640 in MCA slot %d, I/O 0x%04x\n", slot, bases[indx]); 1119 1120 mca_set_adapter_name(slot, "Adapter AHA-1640"); 1121 mca_set_adapter_procfn(slot, NULL, NULL); 1122 mca_mark_as_used(slot); 1123 1124 /* Go on */ 1125 slot++; 1126 } 1127 1128 } 1129 #endif 1130 1131 /* 1132 * Hunt for ISA Plug'n'Pray Adaptecs (AHA1535) 1133 */ 1134 1135 if(isapnp) 1136 { 1137 struct pnp_dev *pdev = NULL; 1138 for(indx = 0; indx <sizeof(bases)/sizeof(bases[0]);indx++) 1139 { 1140 if(bases[indx]) 1141 continue; 1142 pdev = pnp_find_dev(NULL, ISAPNP_VENDOR('A', 'D', 'P'), 1143 ISAPNP_FUNCTION(0x1542), pdev); 1144 if(pdev==NULL) 1145 break; 1146 /* 1147 * Activate the PnP card 1148 */ 1149 1150 if(pnp_device_attach(pdev)<0) 1151 continue; 1152 1153 if(pnp_activate_dev(pdev)<0) { 1154 pnp_device_detach(pdev); 1155 continue; 1156 } 1157 1158 if(!pnp_port_valid(pdev, 0)) { 1159 pnp_device_detach(pdev); 1160 continue; 1161 } 1162 1163 bases[indx] = pnp_port_start(pdev, 0); 1164 1165 /* The card can be queried for its DMA, we have 1166 the DMA set up that is enough */ 1167 1168 printk(KERN_INFO "ISAPnP found an AHA1535 at I/O 0x%03X\n", bases[indx]); 1169 } 1170 } 1171 for (indx = 0; indx < sizeof(bases) / sizeof(bases[0]); indx++) 1172 if (bases[indx] != 0 && request_region(bases[indx], 4, "aha1542")) { 1173 shpnt = scsi_register(tpnt, 1174 sizeof(struct aha1542_hostdata)); 1175 1176 if(shpnt==NULL) { 1177 release_region(bases[indx], 4); 1178 continue; 1179 } 1180 /* For now we do this - until kmalloc is more intelligent 1181 we are resigned to stupid hacks like this */ 1182 if (SCSI_BUF_PA(shpnt) >= ISA_DMA_THRESHOLD) { 1183 printk(KERN_ERR "Invalid address for shpnt with 1542.\n"); 1184 goto unregister; 1185 } 1186 if (!aha1542_test_port(bases[indx], shpnt)) 1187 goto unregister; 1188 1189 1190 base_io = bases[indx]; 1191 1192 /* Set the Bus on/off-times as not to ruin floppy performance */ 1193 { 1194 unchar oncmd[] = {CMD_BUSON_TIME, 7}; 1195 unchar offcmd[] = {CMD_BUSOFF_TIME, 5}; 1196 1197 if (setup_called[indx]) { 1198 oncmd[1] = setup_buson[indx]; 1199 offcmd[1] = setup_busoff[indx]; 1200 } 1201 aha1542_intr_reset(base_io); 1202 aha1542_out(base_io, oncmd, 2); 1203 WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); 1204 aha1542_intr_reset(base_io); 1205 aha1542_out(base_io, offcmd, 2); 1206 WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); 1207 if (setup_dmaspeed[indx] >= 0) { 1208 unchar dmacmd[] = {CMD_DMASPEED, 0}; 1209 dmacmd[1] = setup_dmaspeed[indx]; 1210 aha1542_intr_reset(base_io); 1211 aha1542_out(base_io, dmacmd, 2); 1212 WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); 1213 } 1214 while (0) { 1215 fail: 1216 printk(KERN_ERR "aha1542_detect: setting bus on/off-time failed\n"); 1217 } 1218 aha1542_intr_reset(base_io); 1219 } 1220 if (aha1542_query(base_io, &trans)) 1221 goto unregister; 1222 1223 if (aha1542_getconfig(base_io, &irq_level, &dma_chan, &scsi_id) == -1) 1224 goto unregister; 1225 1226 printk(KERN_INFO "Configuring Adaptec (SCSI-ID %d) at IO:%x, IRQ %d", scsi_id, base_io, irq_level); 1227 if (dma_chan != 0xFF) 1228 printk(", DMA priority %d", dma_chan); 1229 printk("\n"); 1230 1231 DEB(aha1542_stat()); 1232 setup_mailboxes(base_io, shpnt); 1233 1234 DEB(aha1542_stat()); 1235 1236 DEB(printk("aha1542_detect: enable interrupt channel %d\n", irq_level)); 1237 spin_lock_irqsave(&aha1542_lock, flags); 1238 if (request_irq(irq_level, do_aha1542_intr_handle, 0, "aha1542", NULL)) { 1239 printk(KERN_ERR "Unable to allocate IRQ for adaptec controller.\n"); 1240 spin_unlock_irqrestore(&aha1542_lock, flags); 1241 goto unregister; 1242 } 1243 if (dma_chan != 0xFF) { 1244 if (request_dma(dma_chan, "aha1542")) { 1245 printk(KERN_ERR "Unable to allocate DMA channel for Adaptec.\n"); 1246 free_irq(irq_level, NULL); 1247 spin_unlock_irqrestore(&aha1542_lock, flags); 1248 goto unregister; 1249 } 1250 if (dma_chan == 0 || dma_chan >= 5) { 1251 set_dma_mode(dma_chan, DMA_MODE_CASCADE); 1252 enable_dma(dma_chan); 1253 } 1254 } 1255 aha_host[irq_level - 9] = shpnt; 1256 shpnt->this_id = scsi_id; 1257 shpnt->unique_id = base_io; 1258 shpnt->io_port = base_io; 1259 shpnt->n_io_port = 4; /* Number of bytes of I/O space used */ 1260 shpnt->dma_channel = dma_chan; 1261 shpnt->irq = irq_level; 1262 HOSTDATA(shpnt)->bios_translation = trans; 1263 if (trans == BIOS_TRANSLATION_25563) 1264 printk(KERN_INFO "aha1542.c: Using extended bios translation\n"); 1265 HOSTDATA(shpnt)->aha1542_last_mbi_used = (2 * AHA1542_MAILBOXES - 1); 1266 HOSTDATA(shpnt)->aha1542_last_mbo_used = (AHA1542_MAILBOXES - 1); 1267 memset(HOSTDATA(shpnt)->SCint, 0, sizeof(HOSTDATA(shpnt)->SCint)); 1268 spin_unlock_irqrestore(&aha1542_lock, flags); 1269 #if 0 1270 DEB(printk(" *** READ CAPACITY ***\n")); 1271 1272 { 1273 unchar buf[8]; 1274 static unchar cmd[] = { READ_CAPACITY, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; 1275 int i; 1276 1277 for (i = 0; i < sizeof(buf); ++i) 1278 buf[i] = 0x87; 1279 for (i = 0; i < 2; ++i) 1280 if (!aha1542_command(i, cmd, buf, sizeof(buf))) { 1281 printk(KERN_DEBUG "aha_detect: LU %d sector_size %d device_size %d\n", 1282 i, xscsi2int(buf + 4), xscsi2int(buf)); 1283 } 1284 } 1285 1286 DEB(printk(" *** NOW RUNNING MY OWN TEST *** \n")); 1287 1288 for (i = 0; i < 4; ++i) { 1289 unsigned char cmd[10]; 1290 static buffer[512]; 1291 1292 cmd[0] = READ_10; 1293 cmd[1] = 0; 1294 xany2scsi(cmd + 2, i); 1295 cmd[6] = 0; 1296 cmd[7] = 0; 1297 cmd[8] = 1; 1298 cmd[9] = 0; 1299 aha1542_command(0, cmd, buffer, 512); 1300 } 1301 #endif 1302 count++; 1303 continue; 1304 unregister: 1305 release_region(bases[indx], 4); 1306 scsi_unregister(shpnt); 1307 continue; 1308 1309 }; 1310 1311 return count; 1312 } 1313 1314 static int aha1542_release(struct Scsi_Host *shost) 1315 { 1316 if (shost->irq) 1317 free_irq(shost->irq, NULL); 1318 if (shost->dma_channel != 0xff) 1319 free_dma(shost->dma_channel); 1320 if (shost->io_port && shost->n_io_port) 1321 release_region(shost->io_port, shost->n_io_port); 1322 scsi_unregister(shost); 1323 return 0; 1324 } 1325 1326 static int aha1542_restart(struct Scsi_Host *shost) 1327 { 1328 int i; 1329 int count = 0; 1330 #if 0 1331 unchar ahacmd = CMD_START_SCSI; 1332 #endif 1333 1334 for (i = 0; i < AHA1542_MAILBOXES; i++) 1335 if (HOSTDATA(shost)->SCint[i] && 1336 !(HOSTDATA(shost)->SCint[i]->device->soft_reset)) { 1337 #if 0 1338 HOSTDATA(shost)->mb[i].status = 1; /* Indicate ready to restart... */ 1339 #endif 1340 count++; 1341 } 1342 printk(KERN_DEBUG "Potential to restart %d stalled commands...\n", count); 1343 #if 0 1344 /* start scsi command */ 1345 if (count) 1346 aha1542_out(shost->io_port, &ahacmd, 1); 1347 #endif 1348 return 0; 1349 } 1350 1351 /* 1352 * This is a device reset. This is handled by sending a special command 1353 * to the device. 1354 */ 1355 static int aha1542_dev_reset(Scsi_Cmnd * SCpnt) 1356 { 1357 unsigned long flags; 1358 struct mailbox *mb; 1359 unchar target = SCpnt->device->id; 1360 unchar lun = SCpnt->device->lun; 1361 int mbo; 1362 struct ccb *ccb; 1363 unchar ahacmd = CMD_START_SCSI; 1364 1365 ccb = HOSTDATA(SCpnt->device->host)->ccb; 1366 mb = HOSTDATA(SCpnt->device->host)->mb; 1367 1368 spin_lock_irqsave(&aha1542_lock, flags); 1369 mbo = HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used + 1; 1370 if (mbo >= AHA1542_MAILBOXES) 1371 mbo = 0; 1372 1373 do { 1374 if (mb[mbo].status == 0 && HOSTDATA(SCpnt->device->host)->SCint[mbo] == NULL) 1375 break; 1376 mbo++; 1377 if (mbo >= AHA1542_MAILBOXES) 1378 mbo = 0; 1379 } while (mbo != HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used); 1380 1381 if (mb[mbo].status || HOSTDATA(SCpnt->device->host)->SCint[mbo]) 1382 panic("Unable to find empty mailbox for aha1542.\n"); 1383 1384 HOSTDATA(SCpnt->device->host)->SCint[mbo] = SCpnt; /* This will effectively 1385 prevent someone else from 1386 screwing with this cdb. */ 1387 1388 HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used = mbo; 1389 spin_unlock_irqrestore(&aha1542_lock, flags); 1390 1391 any2scsi(mb[mbo].ccbptr, SCSI_BUF_PA(&ccb[mbo])); /* This gets trashed for some reason */ 1392 1393 memset(&ccb[mbo], 0, sizeof(struct ccb)); 1394 1395 ccb[mbo].op = 0x81; /* BUS DEVICE RESET */ 1396 1397 ccb[mbo].idlun = (target & 7) << 5 | (lun & 7); /*SCSI Target Id */ 1398 1399 ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; 1400 ccb[mbo].commlinkid = 0; 1401 1402 /* 1403 * Now tell the 1542 to flush all pending commands for this 1404 * target 1405 */ 1406 aha1542_out(SCpnt->device->host->io_port, &ahacmd, 1); 1407 1408 scmd_printk(KERN_WARNING, SCpnt, 1409 "Trying device reset for target\n"); 1410 1411 return SUCCESS; 1412 1413 1414 #ifdef ERIC_neverdef 1415 /* 1416 * With the 1542 we apparently never get an interrupt to 1417 * acknowledge a device reset being sent. Then again, Leonard 1418 * says we are doing this wrong in the first place... 1419 * 1420 * Take a wait and see attitude. If we get spurious interrupts, 1421 * then the device reset is doing something sane and useful, and 1422 * we will wait for the interrupt to post completion. 1423 */ 1424 printk(KERN_WARNING "Sent BUS DEVICE RESET to target %d\n", SCpnt->target); 1425 1426 /* 1427 * Free the command block for all commands running on this 1428 * target... 1429 */ 1430 for (i = 0; i < AHA1542_MAILBOXES; i++) { 1431 if (HOSTDATA(SCpnt->host)->SCint[i] && 1432 HOSTDATA(SCpnt->host)->SCint[i]->target == SCpnt->target) { 1433 Scsi_Cmnd *SCtmp; 1434 SCtmp = HOSTDATA(SCpnt->host)->SCint[i]; 1435 if (SCtmp->host_scribble) { 1436 kfree(SCtmp->host_scribble); 1437 SCtmp->host_scribble = NULL; 1438 } 1439 HOSTDATA(SCpnt->host)->SCint[i] = NULL; 1440 HOSTDATA(SCpnt->host)->mb[i].status = 0; 1441 } 1442 } 1443 return SUCCESS; 1444 1445 return FAILED; 1446 #endif /* ERIC_neverdef */ 1447 } 1448 1449 static int aha1542_bus_reset(Scsi_Cmnd * SCpnt) 1450 { 1451 int i; 1452 1453 /* 1454 * This does a scsi reset for all devices on the bus. 1455 * In principle, we could also reset the 1542 - should 1456 * we do this? Try this first, and we can add that later 1457 * if it turns out to be useful. 1458 */ 1459 outb(SCRST, CONTROL(SCpnt->device->host->io_port)); 1460 1461 /* 1462 * Wait for the thing to settle down a bit. Unfortunately 1463 * this is going to basically lock up the machine while we 1464 * wait for this to complete. To be 100% correct, we need to 1465 * check for timeout, and if we are doing something like this 1466 * we are pretty desperate anyways. 1467 */ 1468 ssleep(4); 1469 1470 spin_lock_irq(SCpnt->device->host->host_lock); 1471 1472 WAIT(STATUS(SCpnt->device->host->io_port), 1473 STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); 1474 1475 /* 1476 * Now try to pick up the pieces. For all pending commands, 1477 * free any internal data structures, and basically clear things 1478 * out. We do not try and restart any commands or anything - 1479 * the strategy handler takes care of that crap. 1480 */ 1481 printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->device->host->host_no); 1482 1483 for (i = 0; i < AHA1542_MAILBOXES; i++) { 1484 if (HOSTDATA(SCpnt->device->host)->SCint[i] != NULL) { 1485 Scsi_Cmnd *SCtmp; 1486 SCtmp = HOSTDATA(SCpnt->device->host)->SCint[i]; 1487 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 if (SCtmp->host_scribble) { 1499 kfree(SCtmp->host_scribble); 1500 SCtmp->host_scribble = NULL; 1501 } 1502 HOSTDATA(SCpnt->device->host)->SCint[i] = NULL; 1503 HOSTDATA(SCpnt->device->host)->mb[i].status = 0; 1504 } 1505 } 1506 1507 spin_unlock_irq(SCpnt->device->host->host_lock); 1508 return SUCCESS; 1509 1510 fail: 1511 spin_unlock_irq(SCpnt->device->host->host_lock); 1512 return FAILED; 1513 } 1514 1515 static int aha1542_host_reset(Scsi_Cmnd * SCpnt) 1516 { 1517 int i; 1518 1519 /* 1520 * This does a scsi reset for all devices on the bus. 1521 * In principle, we could also reset the 1542 - should 1522 * we do this? Try this first, and we can add that later 1523 * if it turns out to be useful. 1524 */ 1525 outb(HRST | SCRST, CONTROL(SCpnt->device->host->io_port)); 1526 1527 /* 1528 * Wait for the thing to settle down a bit. Unfortunately 1529 * this is going to basically lock up the machine while we 1530 * wait for this to complete. To be 100% correct, we need to 1531 * check for timeout, and if we are doing something like this 1532 * we are pretty desperate anyways. 1533 */ 1534 ssleep(4); 1535 spin_lock_irq(SCpnt->device->host->host_lock); 1536 1537 WAIT(STATUS(SCpnt->device->host->io_port), 1538 STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); 1539 1540 /* 1541 * We need to do this too before the 1542 can interact with 1542 * us again. 1543 */ 1544 setup_mailboxes(SCpnt->device->host->io_port, SCpnt->device->host); 1545 1546 /* 1547 * Now try to pick up the pieces. For all pending commands, 1548 * free any internal data structures, and basically clear things 1549 * out. We do not try and restart any commands or anything - 1550 * the strategy handler takes care of that crap. 1551 */ 1552 printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->device->host->host_no); 1553 1554 for (i = 0; i < AHA1542_MAILBOXES; i++) { 1555 if (HOSTDATA(SCpnt->device->host)->SCint[i] != NULL) { 1556 Scsi_Cmnd *SCtmp; 1557 SCtmp = HOSTDATA(SCpnt->device->host)->SCint[i]; 1558 1559 if (SCtmp->device->soft_reset) { 1560 /* 1561 * If this device implements the soft reset option, 1562 * then it is still holding onto the command, and 1563 * may yet complete it. In this case, we don't 1564 * flush the data. 1565 */ 1566 continue; 1567 } 1568 if (SCtmp->host_scribble) { 1569 kfree(SCtmp->host_scribble); 1570 SCtmp->host_scribble = NULL; 1571 } 1572 HOSTDATA(SCpnt->device->host)->SCint[i] = NULL; 1573 HOSTDATA(SCpnt->device->host)->mb[i].status = 0; 1574 } 1575 } 1576 1577 spin_unlock_irq(SCpnt->device->host->host_lock); 1578 return SUCCESS; 1579 1580 fail: 1581 spin_unlock_irq(SCpnt->device->host->host_lock); 1582 return FAILED; 1583 } 1584 1585 #if 0 1586 /* 1587 * These are the old error handling routines. They are only temporarily 1588 * here while we play with the new error handling code. 1589 */ 1590 static int aha1542_old_abort(Scsi_Cmnd * SCpnt) 1591 { 1592 #if 0 1593 unchar ahacmd = CMD_START_SCSI; 1594 unsigned long flags; 1595 struct mailbox *mb; 1596 int mbi, mbo, i; 1597 1598 printk(KERN_DEBUG "In aha1542_abort: %x %x\n", 1599 inb(STATUS(SCpnt->host->io_port)), 1600 inb(INTRFLAGS(SCpnt->host->io_port))); 1601 1602 spin_lock_irqsave(&aha1542_lock, flags); 1603 mb = HOSTDATA(SCpnt->host)->mb; 1604 mbi = HOSTDATA(SCpnt->host)->aha1542_last_mbi_used + 1; 1605 if (mbi >= 2 * AHA1542_MAILBOXES) 1606 mbi = AHA1542_MAILBOXES; 1607 1608 do { 1609 if (mb[mbi].status != 0) 1610 break; 1611 mbi++; 1612 if (mbi >= 2 * AHA1542_MAILBOXES) 1613 mbi = AHA1542_MAILBOXES; 1614 } while (mbi != HOSTDATA(SCpnt->host)->aha1542_last_mbi_used); 1615 spin_unlock_irqrestore(&aha1542_lock, flags); 1616 1617 if (mb[mbi].status) { 1618 printk(KERN_ERR "Lost interrupt discovered on irq %d - attempting to recover\n", 1619 SCpnt->host->irq); 1620 aha1542_intr_handle(SCpnt->host, NULL); 1621 return 0; 1622 } 1623 /* OK, no lost interrupt. Try looking to see how many pending commands 1624 we think we have. */ 1625 1626 for (i = 0; i < AHA1542_MAILBOXES; i++) 1627 if (HOSTDATA(SCpnt->host)->SCint[i]) { 1628 if (HOSTDATA(SCpnt->host)->SCint[i] == SCpnt) { 1629 printk(KERN_ERR "Timed out command pending for %s\n", 1630 SCpnt->request->rq_disk ? 1631 SCpnt->request->rq_disk->disk_name : "?" 1632 ); 1633 if (HOSTDATA(SCpnt->host)->mb[i].status) { 1634 printk(KERN_ERR "OGMB still full - restarting\n"); 1635 aha1542_out(SCpnt->host->io_port, &ahacmd, 1); 1636 }; 1637 } else 1638 printk(KERN_ERR "Other pending command %s\n", 1639 SCpnt->request->rq_disk ? 1640 SCpnt->request->rq_disk->disk_name : "?" 1641 ); 1642 } 1643 #endif 1644 1645 DEB(printk("aha1542_abort\n")); 1646 #if 0 1647 spin_lock_irqsave(&aha1542_lock, flags); 1648 for (mbo = 0; mbo < AHA1542_MAILBOXES; mbo++) { 1649 if (SCpnt == HOSTDATA(SCpnt->host)->SCint[mbo]) { 1650 mb[mbo].status = 2; /* Abort command */ 1651 aha1542_out(SCpnt->host->io_port, &ahacmd, 1); /* start scsi command */ 1652 spin_unlock_irqrestore(&aha1542_lock, flags); 1653 break; 1654 } 1655 } 1656 if (AHA1542_MAILBOXES == mbo) 1657 spin_unlock_irqrestore(&aha1542_lock, flags); 1658 #endif 1659 return SCSI_ABORT_SNOOZE; 1660 } 1661 1662 /* We do not implement a reset function here, but the upper level code 1663 assumes that it will get some kind of response for the command in 1664 SCpnt. We must oblige, or the command will hang the scsi system. 1665 For a first go, we assume that the 1542 notifies us with all of the 1666 pending commands (it does implement soft reset, after all). */ 1667 1668 static int aha1542_old_reset(Scsi_Cmnd * SCpnt, unsigned int reset_flags) 1669 { 1670 unchar ahacmd = CMD_START_SCSI; 1671 int i; 1672 1673 /* 1674 * See if a bus reset was suggested. 1675 */ 1676 if (reset_flags & SCSI_RESET_SUGGEST_BUS_RESET) { 1677 /* 1678 * This does a scsi reset for all devices on the bus. 1679 * In principle, we could also reset the 1542 - should 1680 * we do this? Try this first, and we can add that later 1681 * if it turns out to be useful. 1682 */ 1683 outb(HRST | SCRST, CONTROL(SCpnt->host->io_port)); 1684 1685 /* 1686 * Wait for the thing to settle down a bit. Unfortunately 1687 * this is going to basically lock up the machine while we 1688 * wait for this to complete. To be 100% correct, we need to 1689 * check for timeout, and if we are doing something like this 1690 * we are pretty desperate anyways. 1691 */ 1692 WAIT(STATUS(SCpnt->host->io_port), 1693 STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); 1694 1695 /* 1696 * We need to do this too before the 1542 can interact with 1697 * us again. 1698 */ 1699 setup_mailboxes(SCpnt->host->io_port, SCpnt->host); 1700 1701 /* 1702 * Now try to pick up the pieces. Restart all commands 1703 * that are currently active on the bus, and reset all of 1704 * the datastructures. We have some time to kill while 1705 * things settle down, so print a nice message. 1706 */ 1707 printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->host->host_no); 1708 1709 for (i = 0; i < AHA1542_MAILBOXES; i++) 1710 if (HOSTDATA(SCpnt->host)->SCint[i] != NULL) { 1711 Scsi_Cmnd *SCtmp; 1712 SCtmp = HOSTDATA(SCpnt->host)->SCint[i]; 1713 SCtmp->result = DID_RESET << 16; 1714 if (SCtmp->host_scribble) { 1715 kfree(SCtmp->host_scribble); 1716 SCtmp->host_scribble = NULL; 1717 } 1718 printk(KERN_WARNING "Sending DID_RESET for target %d\n", SCpnt->target); 1719 SCtmp->scsi_done(SCpnt); 1720 1721 HOSTDATA(SCpnt->host)->SCint[i] = NULL; 1722 HOSTDATA(SCpnt->host)->mb[i].status = 0; 1723 } 1724 /* 1725 * Now tell the mid-level code what we did here. Since 1726 * we have restarted all of the outstanding commands, 1727 * then report SUCCESS. 1728 */ 1729 return (SCSI_RESET_SUCCESS | SCSI_RESET_BUS_RESET); 1730 fail: 1731 printk(KERN_CRIT "aha1542.c: Unable to perform hard reset.\n"); 1732 printk(KERN_CRIT "Power cycle machine to reset\n"); 1733 return (SCSI_RESET_ERROR | SCSI_RESET_BUS_RESET); 1734 1735 1736 } else { 1737 /* This does a selective reset of just the one device */ 1738 /* First locate the ccb for this command */ 1739 for (i = 0; i < AHA1542_MAILBOXES; i++) 1740 if (HOSTDATA(SCpnt->host)->SCint[i] == SCpnt) { 1741 HOSTDATA(SCpnt->host)->ccb[i].op = 0x81; /* BUS DEVICE RESET */ 1742 /* Now tell the 1542 to flush all pending commands for this target */ 1743 aha1542_out(SCpnt->host->io_port, &ahacmd, 1); 1744 1745 /* Here is the tricky part. What to do next. Do we get an interrupt 1746 for the commands that we aborted with the specified target, or 1747 do we generate this on our own? Try it without first and see 1748 what happens */ 1749 printk(KERN_WARNING "Sent BUS DEVICE RESET to target %d\n", SCpnt->target); 1750 1751 /* If the first does not work, then try the second. I think the 1752 first option is more likely to be correct. Free the command 1753 block for all commands running on this target... */ 1754 for (i = 0; i < AHA1542_MAILBOXES; i++) 1755 if (HOSTDATA(SCpnt->host)->SCint[i] && 1756 HOSTDATA(SCpnt->host)->SCint[i]->target == SCpnt->target) { 1757 Scsi_Cmnd *SCtmp; 1758 SCtmp = HOSTDATA(SCpnt->host)->SCint[i]; 1759 SCtmp->result = DID_RESET << 16; 1760 if (SCtmp->host_scribble) { 1761 kfree(SCtmp->host_scribble); 1762 SCtmp->host_scribble = NULL; 1763 } 1764 printk(KERN_WARNING "Sending DID_RESET for target %d\n", SCpnt->target); 1765 SCtmp->scsi_done(SCpnt); 1766 1767 HOSTDATA(SCpnt->host)->SCint[i] = NULL; 1768 HOSTDATA(SCpnt->host)->mb[i].status = 0; 1769 } 1770 return SCSI_RESET_SUCCESS; 1771 } 1772 } 1773 /* No active command at this time, so this means that each time we got 1774 some kind of response the last time through. Tell the mid-level code 1775 to request sense information in order to decide what to do next. */ 1776 return SCSI_RESET_PUNT; 1777 } 1778 #endif /* end of big comment block around old_abort + old_reset */ 1779 1780 static int aha1542_biosparam(struct scsi_device *sdev, 1781 struct block_device *bdev, sector_t capacity, int *ip) 1782 { 1783 int translation_algorithm; 1784 int size = capacity; 1785 1786 translation_algorithm = HOSTDATA(sdev->host)->bios_translation; 1787 1788 if ((size >> 11) > 1024 && translation_algorithm == BIOS_TRANSLATION_25563) { 1789 /* Please verify that this is the same as what DOS returns */ 1790 ip[0] = 255; 1791 ip[1] = 63; 1792 ip[2] = size / 255 / 63; 1793 } else { 1794 ip[0] = 64; 1795 ip[1] = 32; 1796 ip[2] = size >> 11; 1797 } 1798 1799 return 0; 1800 } 1801 MODULE_LICENSE("GPL"); 1802 1803 1804 static Scsi_Host_Template driver_template = { 1805 .proc_name = "aha1542", 1806 .name = "Adaptec 1542", 1807 .detect = aha1542_detect, 1808 .release = aha1542_release, 1809 .queuecommand = aha1542_queuecommand, 1810 .eh_device_reset_handler= aha1542_dev_reset, 1811 .eh_bus_reset_handler = aha1542_bus_reset, 1812 .eh_host_reset_handler = aha1542_host_reset, 1813 .bios_param = aha1542_biosparam, 1814 .can_queue = AHA1542_MAILBOXES, 1815 .this_id = 7, 1816 .sg_tablesize = AHA1542_SCATTER, 1817 .cmd_per_lun = AHA1542_CMDLUN, 1818 .unchecked_isa_dma = 1, 1819 .use_clustering = ENABLE_CLUSTERING, 1820 }; 1821 #include "scsi_module.c" 1822