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 95/* 96 * eata_proc_info 97 * inout : decides on the direction of the dataflow and the meaning of the 98 * variables 99 * buffer: If inout==FALSE data is being written to it else read from it 100 * *start: If inout==FALSE start of the valid data in the buffer 101 * offset: If inout==FALSE offset from the beginning of the imaginary file 102 * from which we start writing into the buffer 103 * length: If inout==FALSE max number of bytes to be written into the buffer 104 * else number of bytes in the buffer 105 */ 106static int eata_pio_proc_info(struct Scsi_Host *shost, char *buffer, char **start, off_t offset, 107 int length, int rw) 108{ 109 int len = 0; 110 off_t begin = 0, pos = 0; 111 112 if (rw) 113 return -ENOSYS; 114 115 len += sprintf(buffer+len, "EATA (Extended Attachment) PIO driver version: " 116 "%d.%d%s\n",VER_MAJOR, VER_MINOR, VER_SUB); 117 len += sprintf(buffer + len, "queued commands: %10ld\n" 118 "processed interrupts:%10ld\n", queue_counter, int_counter); 119 len += sprintf(buffer + len, "\nscsi%-2d: HBA %.10s\n", 120 shost->host_no, SD(shost)->name); 121 len += sprintf(buffer + len, "Firmware revision: v%s\n", 122 SD(shost)->revision); 123 len += sprintf(buffer + len, "IO: PIO\n"); 124 len += sprintf(buffer + len, "Base IO : %#.4x\n", (u32) shost->base); 125 len += sprintf(buffer + len, "Host Bus: %s\n", 126 (SD(shost)->bustype == 'P')?"PCI ": 127 (SD(shost)->bustype == 'E')?"EISA":"ISA "); 128 129 pos = begin + len; 130 131 if (pos < offset) { 132 len = 0; 133 begin = pos; 134 } 135 if (pos > offset + length) 136 goto stop_output; 137 138stop_output: 139 DBG(DBG_PROC, printk("2pos: %ld offset: %ld len: %d\n", pos, offset, len)); 140 *start = buffer + (offset - begin); /* Start of wanted data */ 141 len -= (offset - begin); /* Start slop */ 142 if (len > length) 143 len = length; /* Ending slop */ 144 DBG(DBG_PROC, printk("3pos: %ld offset: %ld len: %d\n", pos, offset, len)); 145 146 return len; 147} 148 149static int eata_pio_release(struct Scsi_Host *sh) 150{ 151 hostdata *hd = SD(sh); 152 if (sh->irq && reg_IRQ[sh->irq] == 1) 153 free_irq(sh->irq, NULL); 154 else 155 reg_IRQ[sh->irq]--; 156 if (SD(sh)->channel == 0) { 157 if (sh->io_port && sh->n_io_port) 158 release_region(sh->io_port, sh->n_io_port); 159 } 160 /* At this point the PCI reference can go */ 161 if (hd->pdev) 162 pci_dev_put(hd->pdev); 163 return 1; 164} 165 166static void IncStat(struct scsi_pointer *SCp, unsigned int Increment) 167{ 168 SCp->ptr += Increment; 169 if ((SCp->this_residual -= Increment) == 0) { 170 if ((--SCp->buffers_residual) == 0) 171 SCp->Status = 0; 172 else { 173 SCp->buffer++; 174 SCp->ptr = sg_virt(SCp->buffer); 175 SCp->this_residual = SCp->buffer->length; 176 } 177 } 178} 179 180static irqreturn_t eata_pio_int_handler(int irq, void *dev_id); 181 182static irqreturn_t do_eata_pio_int_handler(int irq, void *dev_id) 183{ 184 unsigned long flags; 185 struct Scsi_Host *dev = dev_id; 186 irqreturn_t ret; 187 188 spin_lock_irqsave(dev->host_lock, flags); 189 ret = eata_pio_int_handler(irq, dev_id); 190 spin_unlock_irqrestore(dev->host_lock, flags); 191 return ret; 192} 193 194static irqreturn_t eata_pio_int_handler(int irq, void *dev_id) 195{ 196 unsigned int eata_stat = 0xfffff; 197 struct scsi_cmnd *cmd; 198 hostdata *hd; 199 struct eata_ccb *cp; 200 unsigned long base; 201 unsigned int x, z; 202 struct Scsi_Host *sh; 203 unsigned short zwickel = 0; 204 unsigned char stat, odd; 205 irqreturn_t ret = IRQ_NONE; 206 207 for (x = 1, sh = first_HBA; x <= registered_HBAs; x++, sh = SD(sh)->prev) 208 { 209 if (sh->irq != irq) 210 continue; 211 if (inb(sh->base + HA_RSTATUS) & HA_SBUSY) 212 continue; 213 214 int_counter++; 215 ret = IRQ_HANDLED; 216 217 hd = SD(sh); 218 219 cp = &hd->ccb[0]; 220 cmd = cp->cmd; 221 base = cmd->device->host->base; 222 223 do { 224 stat = inb(base + HA_RSTATUS); 225 if (stat & HA_SDRQ) { 226 if (cp->DataIn) { 227 z = 256; 228 odd = 0; 229 while ((cmd->SCp.Status) && ((z > 0) || (odd))) { 230 if (odd) { 231 *(cmd->SCp.ptr) = zwickel >> 8; 232 IncStat(&cmd->SCp, 1); 233 odd = 0; 234 } 235 x = min_t(unsigned int, z, cmd->SCp.this_residual / 2); 236 insw(base + HA_RDATA, cmd->SCp.ptr, x); 237 z -= x; 238 IncStat(&cmd->SCp, 2 * x); 239 if ((z > 0) && (cmd->SCp.this_residual == 1)) { 240 zwickel = inw(base + HA_RDATA); 241 *(cmd->SCp.ptr) = zwickel & 0xff; 242 IncStat(&cmd->SCp, 1); 243 z--; 244 odd = 1; 245 } 246 } 247 while (z > 0) { 248 zwickel = inw(base + HA_RDATA); 249 z--; 250 } 251 } else { /* cp->DataOut */ 252 253 odd = 0; 254 z = 256; 255 while ((cmd->SCp.Status) && ((z > 0) || (odd))) { 256 if (odd) { 257 zwickel += *(cmd->SCp.ptr) << 8; 258 IncStat(&cmd->SCp, 1); 259 outw(zwickel, base + HA_RDATA); 260 z--; 261 odd = 0; 262 } 263 x = min_t(unsigned int, z, cmd->SCp.this_residual / 2); 264 outsw(base + HA_RDATA, cmd->SCp.ptr, x); 265 z -= x; 266 IncStat(&cmd->SCp, 2 * x); 267 if ((z > 0) && (cmd->SCp.this_residual == 1)) { 268 zwickel = *(cmd->SCp.ptr); 269 zwickel &= 0xff; 270 IncStat(&cmd->SCp, 1); 271 odd = 1; 272 } 273 } 274 while (z > 0 || odd) { 275 outw(zwickel, base + HA_RDATA); 276 z--; 277 odd = 0; 278 } 279 } 280 } 281 } 282 while ((stat & HA_SDRQ) || ((stat & HA_SMORE) && hd->moresupport)); 283 284 /* terminate handler if HBA goes busy again, i.e. transfers 285 * more data */ 286 287 if (stat & HA_SBUSY) 288 break; 289 290 /* OK, this is quite stupid, but I haven't found any correct 291 * way to get HBA&SCSI status so far */ 292 293 if (!(inb(base + HA_RSTATUS) & HA_SERROR)) { 294 cmd->result = (DID_OK << 16); 295 hd->devflags |= (1 << cp->cp_id); 296 } else if (hd->devflags & (1 << cp->cp_id)) 297 cmd->result = (DID_OK << 16) + 0x02; 298 else 299 cmd->result = (DID_NO_CONNECT << 16); 300 301 if (cp->status == LOCKED) { 302 cp->status = FREE; 303 eata_stat = inb(base + HA_RSTATUS); 304 printk(KERN_CRIT "eata_pio: int_handler, freeing locked " "queueslot\n"); 305 return ret; 306 } 307#if DBG_INTR2 308 if (stat != 0x50) 309 printk(KERN_DEBUG "stat: %#.2x, result: %#.8x\n", stat, cmd->result); 310#endif 311 312 cp->status = FREE; /* now we can release the slot */ 313 314 cmd->scsi_done(cmd); 315 } 316 317 return ret; 318} 319 320static inline unsigned int eata_pio_send_command(unsigned long base, unsigned char command) 321{ 322 unsigned int loop = 50; 323 324 while (inb(base + HA_RSTATUS) & HA_SBUSY) 325 if (--loop == 0) 326 return 1; 327 328 /* Enable interrupts for HBA. It is not the best way to do it at this 329 * place, but I hope that it doesn't interfere with the IDE driver 330 * initialization this way */ 331 332 outb(HA_CTRL_8HEADS, base + HA_CTRLREG); 333 334 outb(command, base + HA_WCOMMAND); 335 return 0; 336} 337 338static int eata_pio_queue_lck(struct scsi_cmnd *cmd, 339 void (*done)(struct scsi_cmnd *)) 340{ 341 unsigned int x, y; 342 unsigned long base; 343 344 hostdata *hd; 345 struct Scsi_Host *sh; 346 struct eata_ccb *cp; 347 348 queue_counter++; 349 350 hd = HD(cmd); 351 sh = cmd->device->host; 352 base = sh->base; 353 354 /* use only slot 0, as 2001 can handle only one cmd at a time */ 355 356 y = x = 0; 357 358 if (hd->ccb[y].status != FREE) { 359 360 DBG(DBG_QUEUE, printk(KERN_EMERG "can_queue %d, x %d, y %d\n", sh->can_queue, x, y)); 361#if DEBUG_EATA 362 panic(KERN_EMERG "eata_pio: run out of queue slots cmdno:%ld " "intrno: %ld\n", queue_counter, int_counter); 363#else 364 panic(KERN_EMERG "eata_pio: run out of queue slots....\n"); 365#endif 366 } 367 368 cp = &hd->ccb[y]; 369 370 memset(cp, 0, sizeof(struct eata_ccb)); 371 372 cp->status = USED; /* claim free slot */ 373 374 DBG(DBG_QUEUE, scmd_printk(KERN_DEBUG, cmd, 375 "eata_pio_queue 0x%p, y %d\n", cmd, y)); 376 377 cmd->scsi_done = (void *) done; 378 379 if (cmd->sc_data_direction == DMA_TO_DEVICE) 380 cp->DataOut = 1; /* Output mode */ 381 else 382 cp->DataIn = 0; /* Input mode */ 383 384 cp->Interpret = (cmd->device->id == hd->hostid); 385 cp->cp_datalen = cpu_to_be32(scsi_bufflen(cmd)); 386 cp->Auto_Req_Sen = 0; 387 cp->cp_reqDMA = 0; 388 cp->reqlen = 0; 389 390 cp->cp_id = cmd->device->id; 391 cp->cp_lun = cmd->device->lun; 392 cp->cp_dispri = 0; 393 cp->cp_identify = 1; 394 memcpy(cp->cp_cdb, cmd->cmnd, COMMAND_SIZE(*cmd->cmnd)); 395 396 cp->cp_statDMA = 0; 397 398 cp->cp_viraddr = cp; 399 cp->cmd = cmd; 400 cmd->host_scribble = (char *) &hd->ccb[y]; 401 402 if (!scsi_bufflen(cmd)) { 403 cmd->SCp.buffers_residual = 1; 404 cmd->SCp.ptr = NULL; 405 cmd->SCp.this_residual = 0; 406 cmd->SCp.buffer = NULL; 407 } else { 408 cmd->SCp.buffer = scsi_sglist(cmd); 409 cmd->SCp.buffers_residual = scsi_sg_count(cmd); 410 cmd->SCp.ptr = sg_virt(cmd->SCp.buffer); 411 cmd->SCp.this_residual = cmd->SCp.buffer->length; 412 } 413 cmd->SCp.Status = (cmd->SCp.this_residual != 0); /* TRUE as long as bytes 414 * are to transfer */ 415 416 if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP)) { 417 cmd->result = DID_BUS_BUSY << 16; 418 scmd_printk(KERN_NOTICE, cmd, 419 "eata_pio_queue pid 0x%p, HBA busy, " 420 "returning DID_BUS_BUSY, done.\n", cmd); 421 done(cmd); 422 cp->status = FREE; 423 return 0; 424 } 425 /* FIXME: timeout */ 426 while (!(inb(base + HA_RSTATUS) & HA_SDRQ)) 427 cpu_relax(); 428 outsw(base + HA_RDATA, cp, hd->cplen); 429 outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND); 430 for (x = 0; x < hd->cppadlen; x++) 431 outw(0, base + HA_RDATA); 432 433 DBG(DBG_QUEUE, scmd_printk(KERN_DEBUG, cmd, 434 "Queued base %#.4lx cmd: 0x%p " 435 "slot %d irq %d\n", sh->base, cmd, y, sh->irq)); 436 437 return 0; 438} 439 440static DEF_SCSI_QCMD(eata_pio_queue) 441 442static int eata_pio_abort(struct scsi_cmnd *cmd) 443{ 444 unsigned int loop = 100; 445 446 DBG(DBG_ABNORM, scmd_printk(KERN_WARNING, cmd, 447 "eata_pio_abort called pid: 0x%p\n", cmd)); 448 449 while (inb(cmd->device->host->base + HA_RAUXSTAT) & HA_ABUSY) 450 if (--loop == 0) { 451 printk(KERN_WARNING "eata_pio: abort, timeout error.\n"); 452 return FAILED; 453 } 454 if (CD(cmd)->status == FREE) { 455 DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_NOT_RUNNING\n")); 456 return FAILED; 457 } 458 if (CD(cmd)->status == USED) { 459 DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_BUSY\n")); 460 /* We want to sleep a bit more here */ 461 return FAILED; /* SNOOZE */ 462 } 463 if (CD(cmd)->status == RESET) { 464 printk(KERN_WARNING "eata_pio: abort, command reset error.\n"); 465 return FAILED; 466 } 467 if (CD(cmd)->status == LOCKED) { 468 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio: abort, queue slot " "locked.\n")); 469 return FAILED; 470 } 471 panic("eata_pio: abort: invalid slot status\n"); 472} 473 474static int eata_pio_host_reset(struct scsi_cmnd *cmd) 475{ 476 unsigned int x, limit = 0; 477 unsigned char success = 0; 478 struct scsi_cmnd *sp; 479 struct Scsi_Host *host = cmd->device->host; 480 481 DBG(DBG_ABNORM, scmd_printk(KERN_WARNING, cmd, 482 "eata_pio_reset called\n")); 483 484 spin_lock_irq(host->host_lock); 485 486 if (HD(cmd)->state == RESET) { 487 printk(KERN_WARNING "eata_pio_reset: exit, already in reset.\n"); 488 spin_unlock_irq(host->host_lock); 489 return FAILED; 490 } 491 492 /* force all slots to be free */ 493 494 for (x = 0; x < cmd->device->host->can_queue; x++) { 495 496 if (HD(cmd)->ccb[x].status == FREE) 497 continue; 498 499 sp = HD(cmd)->ccb[x].cmd; 500 HD(cmd)->ccb[x].status = RESET; 501 printk(KERN_WARNING "eata_pio_reset: slot %d in reset.\n", x); 502 503 if (sp == NULL) 504 panic("eata_pio_reset: slot %d, sp==NULL.\n", x); 505 } 506 507 /* hard reset the HBA */ 508 outb(EATA_CMD_RESET, cmd->device->host->base + HA_WCOMMAND); 509 510 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: board reset done.\n")); 511 HD(cmd)->state = RESET; 512 513 spin_unlock_irq(host->host_lock); 514 msleep(3000); 515 spin_lock_irq(host->host_lock); 516 517 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: interrupts disabled, " "loops %d.\n", limit)); 518 519 for (x = 0; x < cmd->device->host->can_queue; x++) { 520 521 /* Skip slots already set free by interrupt */ 522 if (HD(cmd)->ccb[x].status != RESET) 523 continue; 524 525 sp = HD(cmd)->ccb[x].cmd; 526 sp->result = DID_RESET << 16; 527 528 /* This mailbox is terminated */ 529 printk(KERN_WARNING "eata_pio_reset: reset ccb %d.\n", x); 530 HD(cmd)->ccb[x].status = FREE; 531 532 sp->scsi_done(sp); 533 } 534 535 HD(cmd)->state = 0; 536 537 spin_unlock_irq(host->host_lock); 538 539 if (success) { /* hmmm... */ 540 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, success.\n")); 541 return SUCCESS; 542 } else { 543 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, wakeup.\n")); 544 return FAILED; 545 } 546} 547 548static char *get_pio_board_data(unsigned long base, unsigned int irq, unsigned int id, unsigned long cplen, unsigned short cppadlen) 549{ 550 struct eata_ccb cp; 551 static char buff[256]; 552 int z; 553 554 memset(&cp, 0, sizeof(struct eata_ccb)); 555 memset(buff, 0, sizeof(buff)); 556 557 cp.DataIn = 1; 558 cp.Interpret = 1; /* Interpret command */ 559 560 cp.cp_datalen = cpu_to_be32(254); 561 cp.cp_dataDMA = cpu_to_be32(0); 562 563 cp.cp_id = id; 564 cp.cp_lun = 0; 565 566 cp.cp_cdb[0] = INQUIRY; 567 cp.cp_cdb[1] = 0; 568 cp.cp_cdb[2] = 0; 569 cp.cp_cdb[3] = 0; 570 cp.cp_cdb[4] = 254; 571 cp.cp_cdb[5] = 0; 572 573 if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP)) 574 return NULL; 575 576 while (!(inb(base + HA_RSTATUS) & HA_SDRQ)) 577 cpu_relax(); 578 579 outsw(base + HA_RDATA, &cp, cplen); 580 outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND); 581 for (z = 0; z < cppadlen; z++) 582 outw(0, base + HA_RDATA); 583 584 while (inb(base + HA_RSTATUS) & HA_SBUSY) 585 cpu_relax(); 586 587 if (inb(base + HA_RSTATUS) & HA_SERROR) 588 return NULL; 589 else if (!(inb(base + HA_RSTATUS) & HA_SDRQ)) 590 return NULL; 591 else { 592 insw(base + HA_RDATA, &buff, 127); 593 while (inb(base + HA_RSTATUS) & HA_SDRQ) 594 inw(base + HA_RDATA); 595 return buff; 596 } 597} 598 599static int get_pio_conf_PIO(unsigned long base, struct get_conf *buf) 600{ 601 unsigned long loop = HZ / 2; 602 int z; 603 unsigned short *p; 604 605 if (!request_region(base, 9, "eata_pio")) 606 return 0; 607 608 memset(buf, 0, sizeof(struct get_conf)); 609 610 while (inb(base + HA_RSTATUS) & HA_SBUSY) 611 if (--loop == 0) 612 goto fail; 613 614 DBG(DBG_PIO && DBG_PROBE, printk(KERN_DEBUG "Issuing PIO READ CONFIG to HBA at %#lx\n", base)); 615 eata_pio_send_command(base, EATA_CMD_PIO_READ_CONFIG); 616 617 loop = 50; 618 for (p = (unsigned short *) buf; (long) p <= ((long) buf + (sizeof(struct get_conf) / 2)); p++) { 619 while (!(inb(base + HA_RSTATUS) & HA_SDRQ)) 620 if (--loop == 0) 621 goto fail; 622 623 loop = 50; 624 *p = inw(base + HA_RDATA); 625 } 626 if (inb(base + HA_RSTATUS) & HA_SERROR) { 627 DBG(DBG_PROBE, printk("eata_dma: get_conf_PIO, error during " 628 "transfer for HBA at %lx\n", base)); 629 goto fail; 630 } 631 632 if (cpu_to_be32(EATA_SIGNATURE) != buf->signature) 633 goto fail; 634 635 DBG(DBG_PIO && DBG_PROBE, printk(KERN_NOTICE "EATA Controller found " 636 "at %#4lx EATA Level: %x\n", 637 base, (unsigned int) (buf->version))); 638 639 while (inb(base + HA_RSTATUS) & HA_SDRQ) 640 inw(base + HA_RDATA); 641 642 if (!ALLOW_DMA_BOARDS) { 643 for (z = 0; z < MAXISA; z++) 644 if (base == ISAbases[z]) { 645 buf->IRQ = ISAirqs[z]; 646 break; 647 } 648 } 649 650 return 1; 651 652 fail: 653 release_region(base, 9); 654 return 0; 655} 656 657static void print_pio_config(struct get_conf *gc) 658{ 659 printk("Please check values: (read config data)\n"); 660 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); 661 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); 662 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); 663} 664 665static unsigned int print_selftest(unsigned int base) 666{ 667 unsigned char buffer[512]; 668#ifdef VERBOSE_SETUP 669 int z; 670#endif 671 672 printk("eata_pio: executing controller self test & setup...\n"); 673 while (inb(base + HA_RSTATUS) & HA_SBUSY); 674 outb(EATA_CMD_PIO_SETUPTEST, base + HA_WCOMMAND); 675 do { 676 while (inb(base + HA_RSTATUS) & HA_SBUSY) 677 /* nothing */ ; 678 if (inb(base + HA_RSTATUS) & HA_SDRQ) { 679 insw(base + HA_RDATA, &buffer, 256); 680#ifdef VERBOSE_SETUP 681 /* no beeps please... */ 682 for (z = 0; z < 511 && buffer[z]; z++) 683 if (buffer[z] != 7) 684 printk("%c", buffer[z]); 685#endif 686 } 687 } while (inb(base + HA_RSTATUS) & (HA_SBUSY | HA_SDRQ)); 688 689 return (!(inb(base + HA_RSTATUS) & HA_SERROR)); 690} 691 692static int register_pio_HBA(long base, struct get_conf *gc, struct pci_dev *pdev) 693{ 694 unsigned long size = 0; 695 char *buff; 696 unsigned long cplen; 697 unsigned short cppadlen; 698 struct Scsi_Host *sh; 699 hostdata *hd; 700 701 DBG(DBG_REGISTER, print_pio_config(gc)); 702 703 if (gc->DMA_support) { 704 printk("HBA at %#.4lx supports DMA. Please use EATA-DMA driver.\n", base); 705 if (!ALLOW_DMA_BOARDS) 706 return 0; 707 } 708 709 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) { 710 printk("HBA at %#lx didn't react on INQUIRY. Sorry.\n", base); 711 return 0; 712 } 713 714 if (!print_selftest(base) && !ALLOW_DMA_BOARDS) { 715 printk("HBA at %#lx failed while performing self test & setup.\n", base); 716 return 0; 717 } 718 719 size = sizeof(hostdata) + (sizeof(struct eata_ccb) * be16_to_cpu(gc->queuesiz)); 720 721 sh = scsi_register(&driver_template, size); 722 if (sh == NULL) 723 return 0; 724 725 if (!reg_IRQ[gc->IRQ]) { /* Interrupt already registered ? */ 726 if (!request_irq(gc->IRQ, do_eata_pio_int_handler, IRQF_DISABLED, "EATA-PIO", sh)) { 727 reg_IRQ[gc->IRQ]++; 728 if (!gc->IRQ_TR) 729 reg_IRQL[gc->IRQ] = 1; /* IRQ is edge triggered */ 730 } else { 731 printk("Couldn't allocate IRQ %d, Sorry.\n", gc->IRQ); 732 return 0; 733 } 734 } else { /* More than one HBA on this IRQ */ 735 if (reg_IRQL[gc->IRQ]) { 736 printk("Can't support more than one HBA on this IRQ,\n" " if the IRQ is edge triggered. Sorry.\n"); 737 return 0; 738 } else 739 reg_IRQ[gc->IRQ]++; 740 } 741 742 hd = SD(sh); 743 744 memset(hd->ccb, 0, (sizeof(struct eata_ccb) * be16_to_cpu(gc->queuesiz))); 745 memset(hd->reads, 0, sizeof(hd->reads)); 746 747 strlcpy(SD(sh)->vendor, &buff[8], sizeof(SD(sh)->vendor)); 748 strlcpy(SD(sh)->name, &buff[16], sizeof(SD(sh)->name)); 749 SD(sh)->revision[0] = buff[32]; 750 SD(sh)->revision[1] = buff[33]; 751 SD(sh)->revision[2] = buff[34]; 752 SD(sh)->revision[3] = '.'; 753 SD(sh)->revision[4] = buff[35]; 754 SD(sh)->revision[5] = 0; 755 756 switch (be32_to_cpu(gc->len)) { 757 case 0x1c: 758 SD(sh)->EATA_revision = 'a'; 759 break; 760 case 0x1e: 761 SD(sh)->EATA_revision = 'b'; 762 break; 763 case 0x22: 764 SD(sh)->EATA_revision = 'c'; 765 break; 766 case 0x24: 767 SD(sh)->EATA_revision = 'z'; 768 default: 769 SD(sh)->EATA_revision = '?'; 770 } 771 772 if (be32_to_cpu(gc->len) >= 0x22) { 773 if (gc->is_PCI) 774 hd->bustype = IS_PCI; 775 else if (gc->is_EISA) 776 hd->bustype = IS_EISA; 777 else 778 hd->bustype = IS_ISA; 779 } else { 780 if (buff[21] == '4') 781 hd->bustype = IS_PCI; 782 else if (buff[21] == '2') 783 hd->bustype = IS_EISA; 784 else 785 hd->bustype = IS_ISA; 786 } 787 788 SD(sh)->cplen = cplen; 789 SD(sh)->cppadlen = cppadlen; 790 SD(sh)->hostid = gc->scsi_id[3]; 791 SD(sh)->devflags = 1 << gc->scsi_id[3]; 792 SD(sh)->moresupport = gc->MORE_support; 793 sh->unique_id = base; 794 sh->base = base; 795 sh->io_port = base; 796 sh->n_io_port = 9; 797 sh->irq = gc->IRQ; 798 sh->dma_channel = PIO; 799 sh->this_id = gc->scsi_id[3]; 800 sh->can_queue = 1; 801 sh->cmd_per_lun = 1; 802 sh->sg_tablesize = SG_ALL; 803 804 hd->channel = 0; 805 806 hd->pdev = pci_dev_get(pdev); /* Keep a PCI reference */ 807 808 sh->max_id = 8; 809 sh->max_lun = 8; 810 811 if (gc->SECOND) 812 hd->primary = 0; 813 else 814 hd->primary = 1; 815 816 hd->next = NULL; /* build a linked list of all HBAs */ 817 hd->prev = last_HBA; 818 if (hd->prev != NULL) 819 SD(hd->prev)->next = sh; 820 last_HBA = sh; 821 if (first_HBA == NULL) 822 first_HBA = sh; 823 registered_HBAs++; 824 return (1); 825} 826 827static void find_pio_ISA(struct get_conf *buf) 828{ 829 int i; 830 831 for (i = 0; i < MAXISA; i++) { 832 if (!ISAbases[i]) 833 continue; 834 if (!get_pio_conf_PIO(ISAbases[i], buf)) 835 continue; 836 if (!register_pio_HBA(ISAbases[i], buf, NULL)) 837 release_region(ISAbases[i], 9); 838 else 839 ISAbases[i] = 0; 840 } 841 return; 842} 843 844static void find_pio_EISA(struct get_conf *buf) 845{ 846 u32 base; 847 int i; 848 849#ifdef CHECKPAL 850 u8 pal1, pal2, pal3; 851#endif 852 853 for (i = 0; i < MAXEISA; i++) { 854 if (EISAbases[i]) { /* Still a possibility ? */ 855 856 base = 0x1c88 + (i * 0x1000); 857#ifdef CHECKPAL 858 pal1 = inb((u16) base - 8); 859 pal2 = inb((u16) base - 7); 860 pal3 = inb((u16) base - 6); 861 862 if (((pal1 == 0x12) && (pal2 == 0x14)) || ((pal1 == 0x38) && (pal2 == 0xa3) && (pal3 == 0x82)) || ((pal1 == 0x06) && (pal2 == 0x94) && (pal3 == 0x24))) { 863 DBG(DBG_PROBE, printk(KERN_NOTICE "EISA EATA id tags found: " "%x %x %x \n", (int) pal1, (int) pal2, (int) pal3)); 864#endif 865 if (get_pio_conf_PIO(base, buf)) { 866 DBG(DBG_PROBE && DBG_EISA, print_pio_config(buf)); 867 if (buf->IRQ) { 868 if (!register_pio_HBA(base, buf, NULL)) 869 release_region(base, 9); 870 } else { 871 printk(KERN_NOTICE "eata_dma: No valid IRQ. HBA " "removed from list\n"); 872 release_region(base, 9); 873 } 874 } 875 /* Nothing found here so we take it from the list */ 876 EISAbases[i] = 0; 877#ifdef CHECKPAL 878 } 879#endif 880 } 881 } 882 return; 883} 884 885static void find_pio_PCI(struct get_conf *buf) 886{ 887#ifndef CONFIG_PCI 888 printk("eata_dma: kernel PCI support not enabled. Skipping scan for PCI HBAs.\n"); 889#else 890 struct pci_dev *dev = NULL; 891 unsigned long base, x; 892 893 while ((dev = pci_get_device(PCI_VENDOR_ID_DPT, PCI_DEVICE_ID_DPT, dev)) != NULL) { 894 DBG(DBG_PROBE && DBG_PCI, printk("eata_pio: find_PCI, HBA at %s\n", pci_name(dev))); 895 if (pci_enable_device(dev)) 896 continue; 897 pci_set_master(dev); 898 base = pci_resource_flags(dev, 0); 899 if (base & IORESOURCE_MEM) { 900 printk("eata_pio: invalid base address of device %s\n", pci_name(dev)); 901 continue; 902 } 903 base = pci_resource_start(dev, 0); 904 /* EISA tag there ? */ 905 if ((inb(base) == 0x12) && (inb(base + 1) == 0x14)) 906 continue; /* Jep, it's forced, so move on */ 907 base += 0x10; /* Now, THIS is the real address */ 908 if (base != 0x1f8) { 909 /* We didn't find it in the primary search */ 910 if (get_pio_conf_PIO(base, buf)) { 911 if (buf->FORCADR) { /* If the address is forced */ 912 release_region(base, 9); 913 continue; /* we'll find it later */ 914 } 915 916 /* OK. We made it till here, so we can go now 917 * and register it. We only have to check and 918 * eventually remove it from the EISA and ISA list 919 */ 920 921 if (!register_pio_HBA(base, buf, dev)) { 922 release_region(base, 9); 923 continue; 924 } 925 926 if (base < 0x1000) { 927 for (x = 0; x < MAXISA; ++x) { 928 if (ISAbases[x] == base) { 929 ISAbases[x] = 0; 930 break; 931 } 932 } 933 } else if ((base & 0x0fff) == 0x0c88) { 934 x = (base >> 12) & 0x0f; 935 EISAbases[x] = 0; 936 } 937 } 938#ifdef CHECK_BLINK 939 else if (check_blink_state(base)) { 940 printk("eata_pio: HBA is in BLINK state.\n" "Consult your HBAs manual to correct this.\n"); 941 } 942#endif 943 } 944 } 945#endif /* #ifndef CONFIG_PCI */ 946} 947 948static int eata_pio_detect(struct scsi_host_template *tpnt) 949{ 950 struct Scsi_Host *HBA_ptr; 951 struct get_conf gc; 952 int i; 953 954 find_pio_PCI(&gc); 955 find_pio_EISA(&gc); 956 find_pio_ISA(&gc); 957 958 for (i = 0; i <= MAXIRQ; i++) 959 if (reg_IRQ[i]) 960 request_irq(i, do_eata_pio_int_handler, IRQF_DISABLED, "EATA-PIO", NULL); 961 962 HBA_ptr = first_HBA; 963 964 if (registered_HBAs != 0) { 965 printk("EATA (Extended Attachment) PIO driver version: %d.%d%s\n" 966 "(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); 967 968 printk("Registered HBAs:\n"); 969 printk("HBA no. Boardtype: Revis: EATA: Bus: BaseIO: IRQ: Ch: ID: Pr:" " QS: SG: CPL:\n"); 970 for (i = 1; i <= registered_HBAs; i++) { 971 printk("scsi%-2d: %.10s v%s 2.0%c %s %#.4lx %2d %d %d %c" 972 " %2d %2d %2d\n", 973 HBA_ptr->host_no, SD(HBA_ptr)->name, SD(HBA_ptr)->revision, 974 SD(HBA_ptr)->EATA_revision, (SD(HBA_ptr)->bustype == 'P') ? 975 "PCI " : (SD(HBA_ptr)->bustype == 'E') ? "EISA" : "ISA ", 976 HBA_ptr->base, HBA_ptr->irq, SD(HBA_ptr)->channel, HBA_ptr->this_id, 977 SD(HBA_ptr)->primary ? 'Y' : 'N', HBA_ptr->can_queue, 978 HBA_ptr->sg_tablesize, HBA_ptr->cmd_per_lun); 979 HBA_ptr = SD(HBA_ptr)->next; 980 } 981 } 982 return (registered_HBAs); 983} 984 985static struct scsi_host_template driver_template = { 986 .proc_name = "eata_pio", 987 .name = "EATA (Extended Attachment) PIO driver", 988 .proc_info = eata_pio_proc_info, 989 .detect = eata_pio_detect, 990 .release = eata_pio_release, 991 .queuecommand = eata_pio_queue, 992 .eh_abort_handler = eata_pio_abort, 993 .eh_host_reset_handler = eata_pio_host_reset, 994 .use_clustering = ENABLE_CLUSTERING, 995}; 996 997MODULE_AUTHOR("Michael Neuffer, Alfred Arnold"); 998MODULE_DESCRIPTION("EATA SCSI PIO driver"); 999MODULE_LICENSE("GPL"); 1000 1001#include "scsi_module.c" 1002