1/************************************************************ 2 * * 3 * Linux EATA SCSI PIO driver * 4 * * 5 * based on the CAM document CAM/89-004 rev. 2.0c, * 6 * DPT's driver kit, some internal documents and source, * 7 * and several other Linux scsi drivers and kernel docs. * 8 * * 9 * The driver currently: * 10 * -supports all EATA-PIO boards * 11 * -only supports DASD devices * 12 * * 13 * (c)1993-96 Michael Neuffer, Alfred Arnold * 14 * neuffer@goofy.zdv.uni-mainz.de * 15 * a.arnold@kfa-juelich.de * 16 * * 17 * Updated 2002 by Alan Cox <alan@lxorguk.ukuu.org.uk> for * 18 * Linux 2.5.x and the newer locking and error handling * 19 * * 20 * This program is free software; you can redistribute it * 21 * and/or modify it under the terms of the GNU General * 22 * Public License as published by the Free Software * 23 * Foundation; either version 2 of the License, or * 24 * (at your option) any later version. * 25 * * 26 * This program is distributed in the hope that it will be * 27 * useful, but WITHOUT ANY WARRANTY; without even the * 28 * implied warranty of MERCHANTABILITY or FITNESS FOR A * 29 * PARTICULAR PURPOSE. See the GNU General Public License * 30 * for more details. * 31 * * 32 * You should have received a copy of the GNU General * 33 * Public License along with this kernel; if not, write to * 34 * the Free Software Foundation, Inc., 675 Mass Ave, * 35 * Cambridge, MA 02139, USA. * 36 * * 37 * For the avoidance of doubt the "preferred form" of this * 38 * code is one which is in an open non patent encumbered * 39 * format. Where cryptographic key signing forms part of * 40 * the process of creating an executable the information * 41 * including keys needed to generate an equivalently * 42 * functional executable are deemed to be part of the * 43 * source code are deemed to be part of the source code. * 44 * * 45 ************************************************************ 46 * last change: 2002/11/02 OS: Linux 2.5.45 * 47 ************************************************************/ 48 49#include <linux/module.h> 50#include <linux/kernel.h> 51#include <linux/string.h> 52#include <linux/ioport.h> 53#include <linux/in.h> 54#include <linux/pci.h> 55#include <linux/proc_fs.h> 56#include <linux/interrupt.h> 57#include <linux/blkdev.h> 58#include <linux/spinlock.h> 59#include <linux/delay.h> 60 61#include <asm/io.h> 62 63#include <scsi/scsi.h> 64#include <scsi/scsi_cmnd.h> 65#include <scsi/scsi_device.h> 66#include <scsi/scsi_host.h> 67 68#include "eata_generic.h" 69#include "eata_pio.h" 70 71 72static unsigned int ISAbases[MAXISA] = { 73 0x1F0, 0x170, 0x330, 0x230 74}; 75 76static unsigned int ISAirqs[MAXISA] = { 77 14, 12, 15, 11 78}; 79 80static unsigned char EISAbases[] = { 81 1, 1, 1, 1, 1, 1, 1, 1, 82 1, 1, 1, 1, 1, 1, 1, 1 83}; 84 85static unsigned int registered_HBAs; 86static struct Scsi_Host *last_HBA; 87static struct Scsi_Host *first_HBA; 88static unsigned char reg_IRQ[16]; 89static unsigned char reg_IRQL[16]; 90static unsigned long int_counter; 91static unsigned long queue_counter; 92 93static struct scsi_host_template driver_template; 94 95static int eata_pio_show_info(struct seq_file *m, struct Scsi_Host *shost) 96{ 97 seq_printf(m, "EATA (Extended Attachment) PIO driver version: " 98 "%d.%d%s\n",VER_MAJOR, VER_MINOR, VER_SUB); 99 seq_printf(m, "queued commands: %10ld\n" 100 "processed interrupts:%10ld\n", queue_counter, int_counter); 101 seq_printf(m, "\nscsi%-2d: HBA %.10s\n", 102 shost->host_no, SD(shost)->name); 103 seq_printf(m, "Firmware revision: v%s\n", 104 SD(shost)->revision); 105 seq_puts(m, "IO: PIO\n"); 106 seq_printf(m, "Base IO : %#.4x\n", (u32) shost->base); 107 seq_printf(m, "Host Bus: %s\n", 108 (SD(shost)->bustype == 'P')?"PCI ": 109 (SD(shost)->bustype == 'E')?"EISA":"ISA "); 110 return 0; 111} 112 113static int eata_pio_release(struct Scsi_Host *sh) 114{ 115 hostdata *hd = SD(sh); 116 if (sh->irq && reg_IRQ[sh->irq] == 1) 117 free_irq(sh->irq, NULL); 118 else 119 reg_IRQ[sh->irq]--; 120 if (SD(sh)->channel == 0) { 121 if (sh->io_port && sh->n_io_port) 122 release_region(sh->io_port, sh->n_io_port); 123 } 124 /* At this point the PCI reference can go */ 125 if (hd->pdev) 126 pci_dev_put(hd->pdev); 127 return 1; 128} 129 130static void IncStat(struct scsi_pointer *SCp, unsigned int Increment) 131{ 132 SCp->ptr += Increment; 133 if ((SCp->this_residual -= Increment) == 0) { 134 if ((--SCp->buffers_residual) == 0) 135 SCp->Status = 0; 136 else { 137 SCp->buffer++; 138 SCp->ptr = sg_virt(SCp->buffer); 139 SCp->this_residual = SCp->buffer->length; 140 } 141 } 142} 143 144static irqreturn_t eata_pio_int_handler(int irq, void *dev_id); 145 146static irqreturn_t do_eata_pio_int_handler(int irq, void *dev_id) 147{ 148 unsigned long flags; 149 struct Scsi_Host *dev = dev_id; 150 irqreturn_t ret; 151 152 spin_lock_irqsave(dev->host_lock, flags); 153 ret = eata_pio_int_handler(irq, dev_id); 154 spin_unlock_irqrestore(dev->host_lock, flags); 155 return ret; 156} 157 158static irqreturn_t eata_pio_int_handler(int irq, void *dev_id) 159{ 160 unsigned int eata_stat = 0xfffff; 161 struct scsi_cmnd *cmd; 162 hostdata *hd; 163 struct eata_ccb *cp; 164 unsigned long base; 165 unsigned int x, z; 166 struct Scsi_Host *sh; 167 unsigned short zwickel = 0; 168 unsigned char stat, odd; 169 irqreturn_t ret = IRQ_NONE; 170 171 for (x = 1, sh = first_HBA; x <= registered_HBAs; x++, sh = SD(sh)->prev) 172 { 173 if (sh->irq != irq) 174 continue; 175 if (inb(sh->base + HA_RSTATUS) & HA_SBUSY) 176 continue; 177 178 int_counter++; 179 ret = IRQ_HANDLED; 180 181 hd = SD(sh); 182 183 cp = &hd->ccb[0]; 184 cmd = cp->cmd; 185 base = cmd->device->host->base; 186 187 do { 188 stat = inb(base + HA_RSTATUS); 189 if (stat & HA_SDRQ) { 190 if (cp->DataIn) { 191 z = 256; 192 odd = 0; 193 while ((cmd->SCp.Status) && ((z > 0) || (odd))) { 194 if (odd) { 195 *(cmd->SCp.ptr) = zwickel >> 8; 196 IncStat(&cmd->SCp, 1); 197 odd = 0; 198 } 199 x = min_t(unsigned int, z, cmd->SCp.this_residual / 2); 200 insw(base + HA_RDATA, cmd->SCp.ptr, x); 201 z -= x; 202 IncStat(&cmd->SCp, 2 * x); 203 if ((z > 0) && (cmd->SCp.this_residual == 1)) { 204 zwickel = inw(base + HA_RDATA); 205 *(cmd->SCp.ptr) = zwickel & 0xff; 206 IncStat(&cmd->SCp, 1); 207 z--; 208 odd = 1; 209 } 210 } 211 while (z > 0) { 212 zwickel = inw(base + HA_RDATA); 213 z--; 214 } 215 } else { /* cp->DataOut */ 216 217 odd = 0; 218 z = 256; 219 while ((cmd->SCp.Status) && ((z > 0) || (odd))) { 220 if (odd) { 221 zwickel += *(cmd->SCp.ptr) << 8; 222 IncStat(&cmd->SCp, 1); 223 outw(zwickel, base + HA_RDATA); 224 z--; 225 odd = 0; 226 } 227 x = min_t(unsigned int, z, cmd->SCp.this_residual / 2); 228 outsw(base + HA_RDATA, cmd->SCp.ptr, x); 229 z -= x; 230 IncStat(&cmd->SCp, 2 * x); 231 if ((z > 0) && (cmd->SCp.this_residual == 1)) { 232 zwickel = *(cmd->SCp.ptr); 233 zwickel &= 0xff; 234 IncStat(&cmd->SCp, 1); 235 odd = 1; 236 } 237 } 238 while (z > 0 || odd) { 239 outw(zwickel, base + HA_RDATA); 240 z--; 241 odd = 0; 242 } 243 } 244 } 245 } 246 while ((stat & HA_SDRQ) || ((stat & HA_SMORE) && hd->moresupport)); 247 248 /* terminate handler if HBA goes busy again, i.e. transfers 249 * more data */ 250 251 if (stat & HA_SBUSY) 252 break; 253 254 /* OK, this is quite stupid, but I haven't found any correct 255 * way to get HBA&SCSI status so far */ 256 257 if (!(inb(base + HA_RSTATUS) & HA_SERROR)) { 258 cmd->result = (DID_OK << 16); 259 hd->devflags |= (1 << cp->cp_id); 260 } else if (hd->devflags & (1 << cp->cp_id)) 261 cmd->result = (DID_OK << 16) + 0x02; 262 else 263 cmd->result = (DID_NO_CONNECT << 16); 264 265 if (cp->status == LOCKED) { 266 cp->status = FREE; 267 eata_stat = inb(base + HA_RSTATUS); 268 printk(KERN_CRIT "eata_pio: int_handler, freeing locked " "queueslot\n"); 269 return ret; 270 } 271#if DBG_INTR2 272 if (stat != 0x50) 273 printk(KERN_DEBUG "stat: %#.2x, result: %#.8x\n", stat, cmd->result); 274#endif 275 276 cp->status = FREE; /* now we can release the slot */ 277 278 cmd->scsi_done(cmd); 279 } 280 281 return ret; 282} 283 284static inline unsigned int eata_pio_send_command(unsigned long base, unsigned char command) 285{ 286 unsigned int loop = 50; 287 288 while (inb(base + HA_RSTATUS) & HA_SBUSY) 289 if (--loop == 0) 290 return 1; 291 292 /* Enable interrupts for HBA. It is not the best way to do it at this 293 * place, but I hope that it doesn't interfere with the IDE driver 294 * initialization this way */ 295 296 outb(HA_CTRL_8HEADS, base + HA_CTRLREG); 297 298 outb(command, base + HA_WCOMMAND); 299 return 0; 300} 301 302static int eata_pio_queue_lck(struct scsi_cmnd *cmd, 303 void (*done)(struct scsi_cmnd *)) 304{ 305 unsigned int x, y; 306 unsigned long base; 307 308 hostdata *hd; 309 struct Scsi_Host *sh; 310 struct eata_ccb *cp; 311 312 queue_counter++; 313 314 hd = HD(cmd); 315 sh = cmd->device->host; 316 base = sh->base; 317 318 /* use only slot 0, as 2001 can handle only one cmd at a time */ 319 320 y = x = 0; 321 322 if (hd->ccb[y].status != FREE) { 323 324 DBG(DBG_QUEUE, printk(KERN_EMERG "can_queue %d, x %d, y %d\n", sh->can_queue, x, y)); 325#if DEBUG_EATA 326 panic(KERN_EMERG "eata_pio: run out of queue slots cmdno:%ld " "intrno: %ld\n", queue_counter, int_counter); 327#else 328 panic(KERN_EMERG "eata_pio: run out of queue slots....\n"); 329#endif 330 } 331 332 cp = &hd->ccb[y]; 333 334 memset(cp, 0, sizeof(struct eata_ccb)); 335 336 cp->status = USED; /* claim free slot */ 337 338 DBG(DBG_QUEUE, scmd_printk(KERN_DEBUG, cmd, 339 "eata_pio_queue 0x%p, y %d\n", cmd, y)); 340 341 cmd->scsi_done = (void *) done; 342 343 if (cmd->sc_data_direction == DMA_TO_DEVICE) 344 cp->DataOut = 1; /* Output mode */ 345 else 346 cp->DataIn = 0; /* Input mode */ 347 348 cp->Interpret = (cmd->device->id == hd->hostid); 349 cp->cp_datalen = cpu_to_be32(scsi_bufflen(cmd)); 350 cp->Auto_Req_Sen = 0; 351 cp->cp_reqDMA = 0; 352 cp->reqlen = 0; 353 354 cp->cp_id = cmd->device->id; 355 cp->cp_lun = cmd->device->lun; 356 cp->cp_dispri = 0; 357 cp->cp_identify = 1; 358 memcpy(cp->cp_cdb, cmd->cmnd, COMMAND_SIZE(*cmd->cmnd)); 359 360 cp->cp_statDMA = 0; 361 362 cp->cp_viraddr = cp; 363 cp->cmd = cmd; 364 cmd->host_scribble = (char *) &hd->ccb[y]; 365 366 if (!scsi_bufflen(cmd)) { 367 cmd->SCp.buffers_residual = 1; 368 cmd->SCp.ptr = NULL; 369 cmd->SCp.this_residual = 0; 370 cmd->SCp.buffer = NULL; 371 } else { 372 cmd->SCp.buffer = scsi_sglist(cmd); 373 cmd->SCp.buffers_residual = scsi_sg_count(cmd); 374 cmd->SCp.ptr = sg_virt(cmd->SCp.buffer); 375 cmd->SCp.this_residual = cmd->SCp.buffer->length; 376 } 377 cmd->SCp.Status = (cmd->SCp.this_residual != 0); /* TRUE as long as bytes 378 * are to transfer */ 379 380 if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP)) { 381 cmd->result = DID_BUS_BUSY << 16; 382 scmd_printk(KERN_NOTICE, cmd, 383 "eata_pio_queue pid 0x%p, HBA busy, " 384 "returning DID_BUS_BUSY, done.\n", cmd); 385 done(cmd); 386 cp->status = FREE; 387 return 0; 388 } 389 /* FIXME: timeout */ 390 while (!(inb(base + HA_RSTATUS) & HA_SDRQ)) 391 cpu_relax(); 392 outsw(base + HA_RDATA, cp, hd->cplen); 393 outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND); 394 for (x = 0; x < hd->cppadlen; x++) 395 outw(0, base + HA_RDATA); 396 397 DBG(DBG_QUEUE, scmd_printk(KERN_DEBUG, cmd, 398 "Queued base %#.4lx cmd: 0x%p " 399 "slot %d irq %d\n", sh->base, cmd, y, sh->irq)); 400 401 return 0; 402} 403 404static DEF_SCSI_QCMD(eata_pio_queue) 405 406static int eata_pio_abort(struct scsi_cmnd *cmd) 407{ 408 unsigned int loop = 100; 409 410 DBG(DBG_ABNORM, scmd_printk(KERN_WARNING, cmd, 411 "eata_pio_abort called pid: 0x%p\n", cmd)); 412 413 while (inb(cmd->device->host->base + HA_RAUXSTAT) & HA_ABUSY) 414 if (--loop == 0) { 415 printk(KERN_WARNING "eata_pio: abort, timeout error.\n"); 416 return FAILED; 417 } 418 if (CD(cmd)->status == FREE) { 419 DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_NOT_RUNNING\n")); 420 return FAILED; 421 } 422 if (CD(cmd)->status == USED) { 423 DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_BUSY\n")); 424 /* We want to sleep a bit more here */ 425 return FAILED; /* SNOOZE */ 426 } 427 if (CD(cmd)->status == RESET) { 428 printk(KERN_WARNING "eata_pio: abort, command reset error.\n"); 429 return FAILED; 430 } 431 if (CD(cmd)->status == LOCKED) { 432 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio: abort, queue slot " "locked.\n")); 433 return FAILED; 434 } 435 panic("eata_pio: abort: invalid slot status\n"); 436} 437 438static int eata_pio_host_reset(struct scsi_cmnd *cmd) 439{ 440 unsigned int x, limit = 0; 441 unsigned char success = 0; 442 struct scsi_cmnd *sp; 443 struct Scsi_Host *host = cmd->device->host; 444 445 DBG(DBG_ABNORM, scmd_printk(KERN_WARNING, cmd, 446 "eata_pio_reset called\n")); 447 448 spin_lock_irq(host->host_lock); 449 450 if (HD(cmd)->state == RESET) { 451 printk(KERN_WARNING "eata_pio_reset: exit, already in reset.\n"); 452 spin_unlock_irq(host->host_lock); 453 return FAILED; 454 } 455 456 /* force all slots to be free */ 457 458 for (x = 0; x < cmd->device->host->can_queue; x++) { 459 460 if (HD(cmd)->ccb[x].status == FREE) 461 continue; 462 463 sp = HD(cmd)->ccb[x].cmd; 464 HD(cmd)->ccb[x].status = RESET; 465 printk(KERN_WARNING "eata_pio_reset: slot %d in reset.\n", x); 466 467 if (sp == NULL) 468 panic("eata_pio_reset: slot %d, sp==NULL.\n", x); 469 } 470 471 /* hard reset the HBA */ 472 outb(EATA_CMD_RESET, cmd->device->host->base + HA_WCOMMAND); 473 474 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: board reset done.\n")); 475 HD(cmd)->state = RESET; 476 477 spin_unlock_irq(host->host_lock); 478 msleep(3000); 479 spin_lock_irq(host->host_lock); 480 481 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: interrupts disabled, " "loops %d.\n", limit)); 482 483 for (x = 0; x < cmd->device->host->can_queue; x++) { 484 485 /* Skip slots already set free by interrupt */ 486 if (HD(cmd)->ccb[x].status != RESET) 487 continue; 488 489 sp = HD(cmd)->ccb[x].cmd; 490 sp->result = DID_RESET << 16; 491 492 /* This mailbox is terminated */ 493 printk(KERN_WARNING "eata_pio_reset: reset ccb %d.\n", x); 494 HD(cmd)->ccb[x].status = FREE; 495 496 sp->scsi_done(sp); 497 } 498 499 HD(cmd)->state = 0; 500 501 spin_unlock_irq(host->host_lock); 502 503 if (success) { /* hmmm... */ 504 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, success.\n")); 505 return SUCCESS; 506 } else { 507 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, wakeup.\n")); 508 return FAILED; 509 } 510} 511 512static char *get_pio_board_data(unsigned long base, unsigned int irq, unsigned int id, unsigned long cplen, unsigned short cppadlen) 513{ 514 struct eata_ccb cp; 515 static char buff[256]; 516 int z; 517 518 memset(&cp, 0, sizeof(struct eata_ccb)); 519 memset(buff, 0, sizeof(buff)); 520 521 cp.DataIn = 1; 522 cp.Interpret = 1; /* Interpret command */ 523 524 cp.cp_datalen = cpu_to_be32(254); 525 cp.cp_dataDMA = cpu_to_be32(0); 526 527 cp.cp_id = id; 528 cp.cp_lun = 0; 529 530 cp.cp_cdb[0] = INQUIRY; 531 cp.cp_cdb[1] = 0; 532 cp.cp_cdb[2] = 0; 533 cp.cp_cdb[3] = 0; 534 cp.cp_cdb[4] = 254; 535 cp.cp_cdb[5] = 0; 536 537 if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP)) 538 return NULL; 539 540 while (!(inb(base + HA_RSTATUS) & HA_SDRQ)) 541 cpu_relax(); 542 543 outsw(base + HA_RDATA, &cp, cplen); 544 outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND); 545 for (z = 0; z < cppadlen; z++) 546 outw(0, base + HA_RDATA); 547 548 while (inb(base + HA_RSTATUS) & HA_SBUSY) 549 cpu_relax(); 550 551 if (inb(base + HA_RSTATUS) & HA_SERROR) 552 return NULL; 553 else if (!(inb(base + HA_RSTATUS) & HA_SDRQ)) 554 return NULL; 555 else { 556 insw(base + HA_RDATA, &buff, 127); 557 while (inb(base + HA_RSTATUS) & HA_SDRQ) 558 inw(base + HA_RDATA); 559 return buff; 560 } 561} 562 563static int get_pio_conf_PIO(unsigned long base, struct get_conf *buf) 564{ 565 unsigned long loop = HZ / 2; 566 int z; 567 unsigned short *p; 568 569 if (!request_region(base, 9, "eata_pio")) 570 return 0; 571 572 memset(buf, 0, sizeof(struct get_conf)); 573 574 while (inb(base + HA_RSTATUS) & HA_SBUSY) 575 if (--loop == 0) 576 goto fail; 577 578 DBG(DBG_PIO && DBG_PROBE, printk(KERN_DEBUG "Issuing PIO READ CONFIG to HBA at %#lx\n", base)); 579 eata_pio_send_command(base, EATA_CMD_PIO_READ_CONFIG); 580 581 loop = 50; 582 for (p = (unsigned short *) buf; (long) p <= ((long) buf + (sizeof(struct get_conf) / 2)); p++) { 583 while (!(inb(base + HA_RSTATUS) & HA_SDRQ)) 584 if (--loop == 0) 585 goto fail; 586 587 loop = 50; 588 *p = inw(base + HA_RDATA); 589 } 590 if (inb(base + HA_RSTATUS) & HA_SERROR) { 591 DBG(DBG_PROBE, printk("eata_dma: get_conf_PIO, error during " 592 "transfer for HBA at %lx\n", base)); 593 goto fail; 594 } 595 596 if (cpu_to_be32(EATA_SIGNATURE) != buf->signature) 597 goto fail; 598 599 DBG(DBG_PIO && DBG_PROBE, printk(KERN_NOTICE "EATA Controller found " 600 "at %#4lx EATA Level: %x\n", 601 base, (unsigned int) (buf->version))); 602 603 while (inb(base + HA_RSTATUS) & HA_SDRQ) 604 inw(base + HA_RDATA); 605 606 if (!ALLOW_DMA_BOARDS) { 607 for (z = 0; z < MAXISA; z++) 608 if (base == ISAbases[z]) { 609 buf->IRQ = ISAirqs[z]; 610 break; 611 } 612 } 613 614 return 1; 615 616 fail: 617 release_region(base, 9); 618 return 0; 619} 620 621static void print_pio_config(struct get_conf *gc) 622{ 623 printk("Please check values: (read config data)\n"); 624 printk("LEN: %d ver:%d OCS:%d TAR:%d TRNXFR:%d MORES:%d\n", be32_to_cpu(gc->len), gc->version, gc->OCS_enabled, gc->TAR_support, gc->TRNXFR, gc->MORE_support); 625 printk("HAAV:%d SCSIID0:%d ID1:%d ID2:%d QUEUE:%d SG:%d SEC:%d\n", gc->HAA_valid, gc->scsi_id[3], gc->scsi_id[2], gc->scsi_id[1], be16_to_cpu(gc->queuesiz), be16_to_cpu(gc->SGsiz), gc->SECOND); 626 printk("IRQ:%d IRQT:%d FORCADR:%d MCH:%d RIDQ:%d\n", gc->IRQ, gc->IRQ_TR, gc->FORCADR, gc->MAX_CHAN, gc->ID_qest); 627} 628 629static unsigned int print_selftest(unsigned int base) 630{ 631 unsigned char buffer[512]; 632#ifdef VERBOSE_SETUP 633 int z; 634#endif 635 636 printk("eata_pio: executing controller self test & setup...\n"); 637 while (inb(base + HA_RSTATUS) & HA_SBUSY); 638 outb(EATA_CMD_PIO_SETUPTEST, base + HA_WCOMMAND); 639 do { 640 while (inb(base + HA_RSTATUS) & HA_SBUSY) 641 /* nothing */ ; 642 if (inb(base + HA_RSTATUS) & HA_SDRQ) { 643 insw(base + HA_RDATA, &buffer, 256); 644#ifdef VERBOSE_SETUP 645 /* no beeps please... */ 646 for (z = 0; z < 511 && buffer[z]; z++) 647 if (buffer[z] != 7) 648 printk("%c", buffer[z]); 649#endif 650 } 651 } while (inb(base + HA_RSTATUS) & (HA_SBUSY | HA_SDRQ)); 652 653 return (!(inb(base + HA_RSTATUS) & HA_SERROR)); 654} 655 656static int register_pio_HBA(long base, struct get_conf *gc, struct pci_dev *pdev) 657{ 658 unsigned long size = 0; 659 char *buff; 660 unsigned long cplen; 661 unsigned short cppadlen; 662 struct Scsi_Host *sh; 663 hostdata *hd; 664 665 DBG(DBG_REGISTER, print_pio_config(gc)); 666 667 if (gc->DMA_support) { 668 printk("HBA at %#.4lx supports DMA. Please use EATA-DMA driver.\n", base); 669 if (!ALLOW_DMA_BOARDS) 670 return 0; 671 } 672 673 if ((buff = get_pio_board_data(base, gc->IRQ, gc->scsi_id[3], cplen = (cpu_to_be32(gc->cplen) + 1) / 2, cppadlen = (cpu_to_be16(gc->cppadlen) + 1) / 2)) == NULL) { 674 printk("HBA at %#lx didn't react on INQUIRY. Sorry.\n", base); 675 return 0; 676 } 677 678 if (!print_selftest(base) && !ALLOW_DMA_BOARDS) { 679 printk("HBA at %#lx failed while performing self test & setup.\n", base); 680 return 0; 681 } 682 683 size = sizeof(hostdata) + (sizeof(struct eata_ccb) * be16_to_cpu(gc->queuesiz)); 684 685 sh = scsi_register(&driver_template, size); 686 if (sh == NULL) 687 return 0; 688 689 if (!reg_IRQ[gc->IRQ]) { /* Interrupt already registered ? */ 690 if (!request_irq(gc->IRQ, do_eata_pio_int_handler, 0, "EATA-PIO", sh)) { 691 reg_IRQ[gc->IRQ]++; 692 if (!gc->IRQ_TR) 693 reg_IRQL[gc->IRQ] = 1; /* IRQ is edge triggered */ 694 } else { 695 printk("Couldn't allocate IRQ %d, Sorry.\n", gc->IRQ); 696 return 0; 697 } 698 } else { /* More than one HBA on this IRQ */ 699 if (reg_IRQL[gc->IRQ]) { 700 printk("Can't support more than one HBA on this IRQ,\n" " if the IRQ is edge triggered. Sorry.\n"); 701 return 0; 702 } else 703 reg_IRQ[gc->IRQ]++; 704 } 705 706 hd = SD(sh); 707 708 memset(hd->ccb, 0, (sizeof(struct eata_ccb) * be16_to_cpu(gc->queuesiz))); 709 memset(hd->reads, 0, sizeof(hd->reads)); 710 711 strlcpy(SD(sh)->vendor, &buff[8], sizeof(SD(sh)->vendor)); 712 strlcpy(SD(sh)->name, &buff[16], sizeof(SD(sh)->name)); 713 SD(sh)->revision[0] = buff[32]; 714 SD(sh)->revision[1] = buff[33]; 715 SD(sh)->revision[2] = buff[34]; 716 SD(sh)->revision[3] = '.'; 717 SD(sh)->revision[4] = buff[35]; 718 SD(sh)->revision[5] = 0; 719 720 switch (be32_to_cpu(gc->len)) { 721 case 0x1c: 722 SD(sh)->EATA_revision = 'a'; 723 break; 724 case 0x1e: 725 SD(sh)->EATA_revision = 'b'; 726 break; 727 case 0x22: 728 SD(sh)->EATA_revision = 'c'; 729 break; 730 case 0x24: 731 SD(sh)->EATA_revision = 'z'; 732 default: 733 SD(sh)->EATA_revision = '?'; 734 } 735 736 if (be32_to_cpu(gc->len) >= 0x22) { 737 if (gc->is_PCI) 738 hd->bustype = IS_PCI; 739 else if (gc->is_EISA) 740 hd->bustype = IS_EISA; 741 else 742 hd->bustype = IS_ISA; 743 } else { 744 if (buff[21] == '4') 745 hd->bustype = IS_PCI; 746 else if (buff[21] == '2') 747 hd->bustype = IS_EISA; 748 else 749 hd->bustype = IS_ISA; 750 } 751 752 SD(sh)->cplen = cplen; 753 SD(sh)->cppadlen = cppadlen; 754 SD(sh)->hostid = gc->scsi_id[3]; 755 SD(sh)->devflags = 1 << gc->scsi_id[3]; 756 SD(sh)->moresupport = gc->MORE_support; 757 sh->unique_id = base; 758 sh->base = base; 759 sh->io_port = base; 760 sh->n_io_port = 9; 761 sh->irq = gc->IRQ; 762 sh->dma_channel = PIO; 763 sh->this_id = gc->scsi_id[3]; 764 sh->can_queue = 1; 765 sh->cmd_per_lun = 1; 766 sh->sg_tablesize = SG_ALL; 767 768 hd->channel = 0; 769 770 hd->pdev = pci_dev_get(pdev); /* Keep a PCI reference */ 771 772 sh->max_id = 8; 773 sh->max_lun = 8; 774 775 if (gc->SECOND) 776 hd->primary = 0; 777 else 778 hd->primary = 1; 779 780 hd->next = NULL; /* build a linked list of all HBAs */ 781 hd->prev = last_HBA; 782 if (hd->prev != NULL) 783 SD(hd->prev)->next = sh; 784 last_HBA = sh; 785 if (first_HBA == NULL) 786 first_HBA = sh; 787 registered_HBAs++; 788 return (1); 789} 790 791static void find_pio_ISA(struct get_conf *buf) 792{ 793 int i; 794 795 for (i = 0; i < MAXISA; i++) { 796 if (!ISAbases[i]) 797 continue; 798 if (!get_pio_conf_PIO(ISAbases[i], buf)) 799 continue; 800 if (!register_pio_HBA(ISAbases[i], buf, NULL)) 801 release_region(ISAbases[i], 9); 802 else 803 ISAbases[i] = 0; 804 } 805 return; 806} 807 808static void find_pio_EISA(struct get_conf *buf) 809{ 810 u32 base; 811 int i; 812 813#ifdef CHECKPAL 814 u8 pal1, pal2, pal3; 815#endif 816 817 for (i = 0; i < MAXEISA; i++) { 818 if (EISAbases[i]) { /* Still a possibility ? */ 819 820 base = 0x1c88 + (i * 0x1000); 821#ifdef CHECKPAL 822 pal1 = inb((u16) base - 8); 823 pal2 = inb((u16) base - 7); 824 pal3 = inb((u16) base - 6); 825 826 if (((pal1 == 0x12) && (pal2 == 0x14)) || ((pal1 == 0x38) && (pal2 == 0xa3) && (pal3 == 0x82)) || ((pal1 == 0x06) && (pal2 == 0x94) && (pal3 == 0x24))) { 827 DBG(DBG_PROBE, printk(KERN_NOTICE "EISA EATA id tags found: " "%x %x %x \n", (int) pal1, (int) pal2, (int) pal3)); 828#endif 829 if (get_pio_conf_PIO(base, buf)) { 830 DBG(DBG_PROBE && DBG_EISA, print_pio_config(buf)); 831 if (buf->IRQ) { 832 if (!register_pio_HBA(base, buf, NULL)) 833 release_region(base, 9); 834 } else { 835 printk(KERN_NOTICE "eata_dma: No valid IRQ. HBA " "removed from list\n"); 836 release_region(base, 9); 837 } 838 } 839 /* Nothing found here so we take it from the list */ 840 EISAbases[i] = 0; 841#ifdef CHECKPAL 842 } 843#endif 844 } 845 } 846 return; 847} 848 849static void find_pio_PCI(struct get_conf *buf) 850{ 851#ifndef CONFIG_PCI 852 printk("eata_dma: kernel PCI support not enabled. Skipping scan for PCI HBAs.\n"); 853#else 854 struct pci_dev *dev = NULL; 855 unsigned long base, x; 856 857 while ((dev = pci_get_device(PCI_VENDOR_ID_DPT, PCI_DEVICE_ID_DPT, dev)) != NULL) { 858 DBG(DBG_PROBE && DBG_PCI, printk("eata_pio: find_PCI, HBA at %s\n", pci_name(dev))); 859 if (pci_enable_device(dev)) 860 continue; 861 pci_set_master(dev); 862 base = pci_resource_flags(dev, 0); 863 if (base & IORESOURCE_MEM) { 864 printk("eata_pio: invalid base address of device %s\n", pci_name(dev)); 865 continue; 866 } 867 base = pci_resource_start(dev, 0); 868 /* EISA tag there ? */ 869 if ((inb(base) == 0x12) && (inb(base + 1) == 0x14)) 870 continue; /* Jep, it's forced, so move on */ 871 base += 0x10; /* Now, THIS is the real address */ 872 if (base != 0x1f8) { 873 /* We didn't find it in the primary search */ 874 if (get_pio_conf_PIO(base, buf)) { 875 if (buf->FORCADR) { /* If the address is forced */ 876 release_region(base, 9); 877 continue; /* we'll find it later */ 878 } 879 880 /* OK. We made it till here, so we can go now 881 * and register it. We only have to check and 882 * eventually remove it from the EISA and ISA list 883 */ 884 885 if (!register_pio_HBA(base, buf, dev)) { 886 release_region(base, 9); 887 continue; 888 } 889 890 if (base < 0x1000) { 891 for (x = 0; x < MAXISA; ++x) { 892 if (ISAbases[x] == base) { 893 ISAbases[x] = 0; 894 break; 895 } 896 } 897 } else if ((base & 0x0fff) == 0x0c88) { 898 x = (base >> 12) & 0x0f; 899 EISAbases[x] = 0; 900 } 901 } 902#ifdef CHECK_BLINK 903 else if (check_blink_state(base)) { 904 printk("eata_pio: HBA is in BLINK state.\n" "Consult your HBAs manual to correct this.\n"); 905 } 906#endif 907 } 908 } 909#endif /* #ifndef CONFIG_PCI */ 910} 911 912static int eata_pio_detect(struct scsi_host_template *tpnt) 913{ 914 struct Scsi_Host *HBA_ptr; 915 struct get_conf gc; 916 int i; 917 918 find_pio_PCI(&gc); 919 find_pio_EISA(&gc); 920 find_pio_ISA(&gc); 921 922 for (i = 0; i < MAXIRQ; i++) 923 if (reg_IRQ[i]) 924 request_irq(i, do_eata_pio_int_handler, 0, "EATA-PIO", NULL); 925 926 HBA_ptr = first_HBA; 927 928 if (registered_HBAs != 0) { 929 printk("EATA (Extended Attachment) PIO driver version: %d.%d%s\n" 930 "(c) 1993-95 Michael Neuffer, neuffer@goofy.zdv.uni-mainz.de\n" " Alfred Arnold, a.arnold@kfa-juelich.de\n" "This release only supports DASD devices (harddisks)\n", VER_MAJOR, VER_MINOR, VER_SUB); 931 932 printk("Registered HBAs:\n"); 933 printk("HBA no. Boardtype: Revis: EATA: Bus: BaseIO: IRQ: Ch: ID: Pr:" " QS: SG: CPL:\n"); 934 for (i = 1; i <= registered_HBAs; i++) { 935 printk("scsi%-2d: %.10s v%s 2.0%c %s %#.4lx %2d %d %d %c" 936 " %2d %2d %2d\n", 937 HBA_ptr->host_no, SD(HBA_ptr)->name, SD(HBA_ptr)->revision, 938 SD(HBA_ptr)->EATA_revision, (SD(HBA_ptr)->bustype == 'P') ? 939 "PCI " : (SD(HBA_ptr)->bustype == 'E') ? "EISA" : "ISA ", 940 HBA_ptr->base, HBA_ptr->irq, SD(HBA_ptr)->channel, HBA_ptr->this_id, 941 SD(HBA_ptr)->primary ? 'Y' : 'N', HBA_ptr->can_queue, 942 HBA_ptr->sg_tablesize, HBA_ptr->cmd_per_lun); 943 HBA_ptr = SD(HBA_ptr)->next; 944 } 945 } 946 return (registered_HBAs); 947} 948 949static struct scsi_host_template driver_template = { 950 .proc_name = "eata_pio", 951 .name = "EATA (Extended Attachment) PIO driver", 952 .show_info = eata_pio_show_info, 953 .detect = eata_pio_detect, 954 .release = eata_pio_release, 955 .queuecommand = eata_pio_queue, 956 .eh_abort_handler = eata_pio_abort, 957 .eh_host_reset_handler = eata_pio_host_reset, 958 .use_clustering = ENABLE_CLUSTERING, 959}; 960 961MODULE_AUTHOR("Michael Neuffer, Alfred Arnold"); 962MODULE_DESCRIPTION("EATA SCSI PIO driver"); 963MODULE_LICENSE("GPL"); 964 965#include "scsi_module.c" 966