1 /************************************************************
3 * Linux EATA SCSI PIO driver *
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. *
9 * The driver currently: *
10 * -supports all EATA-PIO boards *
11 * -only supports DASD devices *
13 * (c)1993-96 Michael Neuffer, Alfred Arnold *
14 * neuffer@goofy.zdv.uni-mainz.de *
15 * a.arnold@kfa-juelich.de *
17 * Updated 2002 by Alan Cox <alan@redhat.com> for Linux *
18 * 2.5.x and the newer locking and error handling *
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. *
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 *
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. *
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. *
45 ************************************************************
46 * last change: 2002/11/02 OS: Linux 2.5.45 *
47 ************************************************************/
49 #include <linux/config.h>
50 #include <linux/module.h>
51 #include <linux/kernel.h>
52 #include <linux/sched.h>
53 #include <linux/string.h>
54 #include <linux/ioport.h>
55 #include <linux/slab.h>
57 #include <linux/pci.h>
58 #include <linux/proc_fs.h>
59 #include <linux/interrupt.h>
60 #include <linux/blkdev.h>
61 #include <linux/spinlock.h>
64 #include <scsi/scsi.h>
65 #include <scsi/scsi_cmnd.h>
66 #include <scsi/scsi_device.h>
67 #include <scsi/scsi_host.h>
69 #include "eata_generic.h"
73 static uint ISAbases[MAXISA] = {
74 0x1F0, 0x170, 0x330, 0x230
77 static uint ISAirqs[MAXISA] = {
81 static unsigned char EISAbases[] = {
82 1, 1, 1, 1, 1, 1, 1, 1,
83 1, 1, 1, 1, 1, 1, 1, 1
86 static uint registered_HBAs;
87 static struct Scsi_Host *last_HBA;
88 static struct Scsi_Host *first_HBA;
89 static unsigned char reg_IRQ[16];
90 static unsigned char reg_IRQL[16];
91 static unsigned long int_counter;
92 static unsigned long queue_counter;
94 static struct scsi_host_template driver_template;
98 * inout : decides on the direction of the dataflow and the meaning of the
100 * buffer: If inout==FALSE data is being written to it else read from it
101 * *start: If inout==FALSE start of the valid data in the buffer
102 * offset: If inout==FALSE offset from the beginning of the imaginary file
103 * from which we start writing into the buffer
104 * length: If inout==FALSE max number of bytes to be written into the buffer
105 * else number of bytes in the buffer
107 static int eata_pio_proc_info(struct Scsi_Host *shost, char *buffer, char **start, off_t offset,
112 off_t begin = 0, pos = 0;
117 memset(buff, 0, sizeof(buff));
119 size = sprintf(buffer+len, "EATA (Extended Attachment) PIO driver version: "
120 "%d.%d%s\n",VER_MAJOR, VER_MINOR, VER_SUB);
121 len += size; pos = begin + len;
122 size = sprintf(buffer + len, "queued commands: %10ld\n"
123 "processed interrupts:%10ld\n", queue_counter, int_counter);
124 len += size; pos = begin + len;
126 size = sprintf(buffer + len, "\nscsi%-2d: HBA %.10s\n",
127 shost->host_no, SD(shost)->name);
130 size = sprintf(buffer + len, "Firmware revision: v%s\n",
131 SD(shost)->revision);
134 size = sprintf(buffer + len, "IO: PIO\n");
137 size = sprintf(buffer + len, "Base IO : %#.4x\n", (u32) shost->base);
140 size = sprintf(buffer + len, "Host Bus: %s\n",
141 (SD(shost)->bustype == 'P')?"PCI ":
142 (SD(shost)->bustype == 'E')?"EISA":"ISA ");
151 if (pos > offset + length)
155 DBG(DBG_PROC, printk("2pos: %ld offset: %ld len: %d\n", pos, offset, len));
156 *start=buffer+(offset-begin); /* Start of wanted data */
157 len-=(offset-begin); /* Start slop */
159 len = length; /* Ending slop */
160 DBG(DBG_PROC, printk("3pos: %ld offset: %ld len: %d\n", pos, offset, len));
165 static int eata_pio_release(struct Scsi_Host *sh)
167 if (sh->irq && reg_IRQ[sh->irq] == 1)
168 free_irq(sh->irq, NULL);
171 if (SD(sh)->channel == 0) {
172 if (sh->io_port && sh->n_io_port)
173 release_region(sh->io_port, sh->n_io_port);
178 static void IncStat(struct scsi_pointer *SCp, uint Increment)
180 SCp->ptr += Increment;
181 if ((SCp->this_residual -= Increment) == 0) {
182 if ((--SCp->buffers_residual) == 0)
186 SCp->ptr = page_address(SCp->buffer->page) + SCp->buffer->offset;
187 SCp->this_residual = SCp->buffer->length;
192 static void eata_pio_int_handler(int irq, void *dev_id, struct pt_regs *regs);
194 static irqreturn_t do_eata_pio_int_handler(int irq, void *dev_id,
195 struct pt_regs *regs)
198 struct Scsi_Host *dev = dev_id;
200 spin_lock_irqsave(dev->host_lock, flags);
201 eata_pio_int_handler(irq, dev_id, regs);
202 spin_unlock_irqrestore(dev->host_lock, flags);
206 static void eata_pio_int_handler(int irq, void *dev_id, struct pt_regs *regs)
208 uint eata_stat = 0xfffff;
209 struct scsi_cmnd *cmd;
214 struct Scsi_Host *sh;
215 unsigned short zwickel = 0;
216 unsigned char stat, odd;
218 for (x = 1, sh = first_HBA; x <= registered_HBAs; x++, sh = SD(sh)->prev)
222 if (inb((uint) sh->base + HA_RSTATUS) & HA_SBUSY)
231 base = (uint) cmd->device->host->base;
234 stat = inb(base + HA_RSTATUS);
235 if (stat & HA_SDRQ) {
239 while ((cmd->SCp.Status) && ((z > 0) || (odd))) {
241 *(cmd->SCp.ptr) = zwickel >> 8;
242 IncStat(&cmd->SCp, 1);
245 x = min_t(unsigned int, z, cmd->SCp.this_residual / 2);
246 insw(base + HA_RDATA, cmd->SCp.ptr, x);
248 IncStat(&cmd->SCp, 2 * x);
249 if ((z > 0) && (cmd->SCp.this_residual == 1)) {
250 zwickel = inw(base + HA_RDATA);
251 *(cmd->SCp.ptr) = zwickel & 0xff;
252 IncStat(&cmd->SCp, 1);
258 zwickel = inw(base + HA_RDATA);
261 } else { /* cp->DataOut */
265 while ((cmd->SCp.Status) && ((z > 0) || (odd))) {
267 zwickel += *(cmd->SCp.ptr) << 8;
268 IncStat(&cmd->SCp, 1);
269 outw(zwickel, base + HA_RDATA);
273 x = min_t(unsigned int, z, cmd->SCp.this_residual / 2);
274 outsw(base + HA_RDATA, cmd->SCp.ptr, x);
276 IncStat(&cmd->SCp, 2 * x);
277 if ((z > 0) && (cmd->SCp.this_residual == 1)) {
278 zwickel = *(cmd->SCp.ptr);
280 IncStat(&cmd->SCp, 1);
284 while (z > 0 || odd) {
285 outw(zwickel, base + HA_RDATA);
292 while ((stat & HA_SDRQ) || ((stat & HA_SMORE) && hd->moresupport));
294 /* terminate handler if HBA goes busy again, i.e. transfers
300 /* OK, this is quite stupid, but I haven't found any correct
301 * way to get HBA&SCSI status so far */
303 if (!(inb(base + HA_RSTATUS) & HA_SERROR)) {
304 cmd->result = (DID_OK << 16);
305 hd->devflags |= (1 << cp->cp_id);
306 } else if (hd->devflags & 1 << cp->cp_id)
307 cmd->result = (DID_OK << 16) + 0x02;
309 cmd->result = (DID_NO_CONNECT << 16);
311 if (cp->status == LOCKED) {
313 eata_stat = inb(base + HA_RSTATUS);
314 printk(KERN_CRIT "eata_pio: int_handler, freeing locked " "queueslot\n");
319 printk(KERN_DEBUG "stat: %#.2x, result: %#.8x\n", stat, cmd->result);
322 cp->status = FREE; /* now we can release the slot */
330 static inline uint eata_pio_send_command(uint base, unsigned char command)
334 while (inb(base + HA_RSTATUS) & HA_SBUSY)
338 /* Enable interrupts for HBA. It is not the best way to do it at this
339 * place, but I hope that it doesn't interfere with the IDE driver
340 * initialization this way */
342 outb(HA_CTRL_8HEADS, base + HA_CTRLREG);
344 outb(command, base + HA_WCOMMAND);
348 static int eata_pio_queue(struct scsi_cmnd *cmd,
349 void (*done)(struct scsi_cmnd *))
355 struct Scsi_Host *sh;
361 sh = cmd->device->host;
362 base = (uint) sh->base;
364 /* use only slot 0, as 2001 can handle only one cmd at a time */
368 if (hd->ccb[y].status != FREE) {
370 DBG(DBG_QUEUE, printk(KERN_EMERG "can_queue %d, x %d, y %d\n", sh->can_queue, x, y));
372 panic(KERN_EMERG "eata_pio: run out of queue slots cmdno:%ld " "intrno: %ld\n", queue_counter, int_counter);
374 panic(KERN_EMERG "eata_pio: run out of queue slots....\n");
380 memset(cp, 0, sizeof(struct eata_ccb));
381 memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
383 cp->status = USED; /* claim free slot */
385 DBG(DBG_QUEUE, printk(KERN_DEBUG "eata_pio_queue pid %ld, target: %x, lun:" " %x, y %d\n", cmd->pid, cmd->device->id, cmd->device->lun, y));
387 cmd->scsi_done = (void *) done;
389 if (cmd->sc_data_direction == DMA_TO_DEVICE)
390 cp->DataOut = 1; /* Output mode */
392 cp->DataIn = 0; /* Input mode */
394 cp->Interpret = (cmd->device->id == hd->hostid);
395 cp->cp_datalen = htonl((unsigned long) cmd->request_bufflen);
396 cp->Auto_Req_Sen = 0;
397 cp->cp_reqDMA = htonl(0);
400 cp->cp_id = cmd->device->id;
401 cp->cp_lun = cmd->device->lun;
404 memcpy(cp->cp_cdb, cmd->cmnd, COMMAND_SIZE(*cmd->cmnd));
406 cp->cp_statDMA = htonl(0);
410 cmd->host_scribble = (char *) &hd->ccb[y];
412 if (cmd->use_sg == 0) {
413 cmd->SCp.buffers_residual = 1;
414 cmd->SCp.ptr = cmd->request_buffer;
415 cmd->SCp.this_residual = cmd->request_bufflen;
416 cmd->SCp.buffer = NULL;
418 cmd->SCp.buffer = cmd->request_buffer;
419 cmd->SCp.buffers_residual = cmd->use_sg;
420 cmd->SCp.ptr = page_address(cmd->SCp.buffer->page) + cmd->SCp.buffer->offset;
421 cmd->SCp.this_residual = cmd->SCp.buffer->length;
423 cmd->SCp.Status = (cmd->SCp.this_residual != 0); /* TRUE as long as bytes
426 if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP)) {
427 cmd->result = DID_BUS_BUSY << 16;
428 printk(KERN_NOTICE "eata_pio_queue target %d, pid %ld, HBA busy, " "returning DID_BUS_BUSY, done.\n", cmd->device->id, cmd->pid);
434 while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
436 outsw(base + HA_RDATA, cp, hd->cplen);
437 outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND);
438 for (x = 0; x < hd->cppadlen; x++)
439 outw(0, base + HA_RDATA);
441 DBG(DBG_QUEUE, printk(KERN_DEBUG "Queued base %#.4lx pid: %ld target: %x " "lun: %x slot %d irq %d\n", (long) sh->base, cmd->pid, cmd->device->id, cmd->device->lun, y, sh->irq));
446 static int eata_pio_abort(struct scsi_cmnd *cmd)
450 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_abort called pid: %ld " "target: %x lun: %x reason %x\n", cmd->pid, cmd->device->id, cmd->device->lun, cmd->abort_reason));
453 while (inb(cmd->device->host->base + HA_RAUXSTAT) & HA_ABUSY)
455 printk(KERN_WARNING "eata_pio: abort, timeout error.\n");
458 if (CD(cmd)->status == FREE) {
459 DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_NOT_RUNNING\n"));
462 if (CD(cmd)->status == USED) {
463 DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_BUSY\n"));
464 /* We want to sleep a bit more here */
465 return FAILED; /* SNOOZE */
467 if (CD(cmd)->status == RESET) {
468 printk(KERN_WARNING "eata_pio: abort, command reset error.\n");
471 if (CD(cmd)->status == LOCKED) {
472 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio: abort, queue slot " "locked.\n"));
475 panic("eata_pio: abort: invalid slot status\n");
478 static int eata_pio_host_reset(struct scsi_cmnd *cmd)
481 unsigned char success = 0;
482 struct scsi_cmnd *sp;
483 struct Scsi_Host *host = cmd->device->host;
485 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset called pid:%ld target:" " %x lun: %x reason %x\n", cmd->pid, cmd->device->id, cmd->device->lun, cmd->abort_reason));
487 if (HD(cmd)->state == RESET) {
488 printk(KERN_WARNING "eata_pio_reset: exit, already in reset.\n");
492 /* force all slots to be free */
494 for (x = 0; x < cmd->device->host->can_queue; x++) {
496 if (HD(cmd)->ccb[x].status == FREE)
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, pid %ld.\n", x, sp->pid);
504 panic("eata_pio_reset: slot %d, sp==NULL.\n", x);
507 /* hard reset the HBA */
508 outb(EATA_CMD_RESET, (uint) cmd->device->host->base + HA_WCOMMAND);
510 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: board reset done.\n"));
511 HD(cmd)->state = RESET;
513 spin_unlock_irq(host->host_lock);
514 set_current_state(TASK_UNINTERRUPTIBLE);
515 schedule_timeout(3 * HZ);
516 spin_lock_irq(host->host_lock);
518 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: interrupts disabled, " "loops %d.\n", limit));
520 for (x = 0; x < cmd->device->host->can_queue; x++) {
522 /* Skip slots already set free by interrupt */
523 if (HD(cmd)->ccb[x].status != RESET)
526 sp = HD(cmd)->ccb[x].cmd;
527 sp->result = DID_RESET << 16;
529 /* This mailbox is terminated */
530 printk(KERN_WARNING "eata_pio_reset: reset ccb %d.\n", x);
531 HD(cmd)->ccb[x].status = FREE;
538 if (success) { /* hmmm... */
539 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, success.\n"));
542 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, wakeup.\n"));
547 static char *get_pio_board_data(unsigned long base, uint irq, uint id, unsigned long cplen, unsigned short cppadlen)
550 static char buff[256];
553 memset(&cp, 0, sizeof(struct eata_ccb));
554 memset(buff, 0, sizeof(buff));
557 cp.Interpret = 1; /* Interpret command */
559 cp.cp_datalen = htonl(254);
560 cp.cp_dataDMA = htonl(0);
565 cp.cp_cdb[0] = INQUIRY;
572 if (eata_pio_send_command((uint) base, EATA_CMD_PIO_SEND_CP))
574 while (!(inb(base + HA_RSTATUS) & HA_SDRQ));
575 outsw(base + HA_RDATA, &cp, cplen);
576 outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND);
577 for (z = 0; z < cppadlen; z++)
578 outw(0, base + HA_RDATA);
580 while (inb(base + HA_RSTATUS) & HA_SBUSY);
581 if (inb(base + HA_RSTATUS) & HA_SERROR)
583 else if (!(inb(base + HA_RSTATUS) & HA_SDRQ))
586 insw(base + HA_RDATA, &buff, 127);
587 while (inb(base + HA_RSTATUS) & HA_SDRQ)
588 inw(base + HA_RDATA);
593 static int get_pio_conf_PIO(u32 base, struct get_conf *buf)
595 unsigned long loop = HZ / 2;
599 if (!request_region(base, 9, "eata_pio"))
602 memset(buf, 0, sizeof(struct get_conf));
604 while (inb(base + HA_RSTATUS) & HA_SBUSY)
608 DBG(DBG_PIO && DBG_PROBE, printk(KERN_DEBUG "Issuing PIO READ CONFIG to HBA at %#x\n", base));
609 eata_pio_send_command(base, EATA_CMD_PIO_READ_CONFIG);
612 for (p = (unsigned short *) buf; (long) p <= ((long) buf + (sizeof(struct get_conf) / 2)); p++) {
613 while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
618 *p = inw(base + HA_RDATA);
620 if (inb(base + HA_RSTATUS) & HA_SERROR) {
621 DBG(DBG_PROBE, printk("eata_dma: get_conf_PIO, error during "
622 "transfer for HBA at %x\n", base));
626 if (htonl(EATA_SIGNATURE) != buf->signature)
629 DBG(DBG_PIO && DBG_PROBE, printk(KERN_NOTICE "EATA Controller found "
630 "at %#4x EATA Level: %x\n",
631 base, (uint) (buf->version)));
633 while (inb(base + HA_RSTATUS) & HA_SDRQ)
634 inw(base + HA_RDATA);
636 if (!ALLOW_DMA_BOARDS) {
637 for (z = 0; z < MAXISA; z++)
638 if (base == ISAbases[z]) {
639 buf->IRQ = ISAirqs[z];
647 release_region(base, 9);
651 static void print_pio_config(struct get_conf *gc)
653 printk("Please check values: (read config data)\n");
654 printk("LEN: %d ver:%d OCS:%d TAR:%d TRNXFR:%d MORES:%d\n", (uint) ntohl(gc->len), gc->version, gc->OCS_enabled, gc->TAR_support, gc->TRNXFR, gc->MORE_support);
655 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], ntohs(gc->queuesiz), ntohs(gc->SGsiz), gc->SECOND);
656 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);
659 static uint print_selftest(uint base)
661 unsigned char buffer[512];
666 printk("eata_pio: executing controller self test & setup...\n");
667 while (inb(base + HA_RSTATUS) & HA_SBUSY);
668 outb(EATA_CMD_PIO_SETUPTEST, base + HA_WCOMMAND);
670 while (inb(base + HA_RSTATUS) & HA_SBUSY)
672 if (inb(base + HA_RSTATUS) & HA_SDRQ) {
673 insw(base + HA_RDATA, &buffer, 256);
675 /* no beeps please... */
676 for (z = 0; z < 511 && buffer[z]; z++)
678 printk("%c", buffer[z]);
681 } while (inb(base + HA_RSTATUS) & (HA_SBUSY | HA_SDRQ));
683 return (!(inb(base + HA_RSTATUS) & HA_SERROR));
686 static int register_pio_HBA(long base, struct get_conf *gc)
688 unsigned long size = 0;
691 unsigned short cppadlen;
692 struct Scsi_Host *sh;
695 DBG(DBG_REGISTER, print_pio_config(gc));
697 if (gc->DMA_support) {
698 printk("HBA at %#.4lx supports DMA. Please use EATA-DMA driver.\n", base);
699 if (!ALLOW_DMA_BOARDS)
703 if ((buff = get_pio_board_data((uint) base, gc->IRQ, gc->scsi_id[3], cplen = (htonl(gc->cplen) + 1) / 2, cppadlen = (htons(gc->cppadlen) + 1) / 2)) == NULL) {
704 printk("HBA at %#lx didn't react on INQUIRY. Sorry.\n", (unsigned long) base);
708 if (!print_selftest(base) && !ALLOW_DMA_BOARDS) {
709 printk("HBA at %#lx failed while performing self test & setup.\n", (unsigned long) base);
713 size = sizeof(hostdata) + (sizeof(struct eata_ccb) * ntohs(gc->queuesiz));
715 sh = scsi_register(&driver_template, size);
719 if (!reg_IRQ[gc->IRQ]) { /* Interrupt already registered ? */
720 if (!request_irq(gc->IRQ, do_eata_pio_int_handler, SA_INTERRUPT, "EATA-PIO", sh)) {
723 reg_IRQL[gc->IRQ] = 1; /* IRQ is edge triggered */
725 printk("Couldn't allocate IRQ %d, Sorry.\n", gc->IRQ);
728 } else { /* More than one HBA on this IRQ */
729 if (reg_IRQL[gc->IRQ]) {
730 printk("Can't support more than one HBA on this IRQ,\n" " if the IRQ is edge triggered. Sorry.\n");
738 memset(hd->ccb, 0, (sizeof(struct eata_ccb) * ntohs(gc->queuesiz)));
739 memset(hd->reads, 0, sizeof(unsigned long) * 26);
741 strlcpy(SD(sh)->vendor, &buff[8], sizeof(SD(sh)->vendor));
742 strlcpy(SD(sh)->name, &buff[16], sizeof(SD(sh)->name));
743 SD(sh)->revision[0] = buff[32];
744 SD(sh)->revision[1] = buff[33];
745 SD(sh)->revision[2] = buff[34];
746 SD(sh)->revision[3] = '.';
747 SD(sh)->revision[4] = buff[35];
748 SD(sh)->revision[5] = 0;
750 switch (ntohl(gc->len)) {
752 SD(sh)->EATA_revision = 'a';
755 SD(sh)->EATA_revision = 'b';
758 SD(sh)->EATA_revision = 'c';
761 SD(sh)->EATA_revision = 'z';
763 SD(sh)->EATA_revision = '?';
766 if (ntohl(gc->len) >= 0x22) {
768 hd->bustype = IS_PCI;
769 else if (gc->is_EISA)
770 hd->bustype = IS_EISA;
772 hd->bustype = IS_ISA;
775 hd->bustype = IS_PCI;
776 else if (buff[21] == '2')
777 hd->bustype = IS_EISA;
779 hd->bustype = IS_ISA;
782 SD(sh)->cplen = cplen;
783 SD(sh)->cppadlen = cppadlen;
784 SD(sh)->hostid = gc->scsi_id[3];
785 SD(sh)->devflags = 1 << gc->scsi_id[3];
786 SD(sh)->moresupport = gc->MORE_support;
787 sh->unique_id = base;
792 sh->dma_channel = PIO;
793 sh->this_id = gc->scsi_id[3];
796 sh->sg_tablesize = SG_ALL;
808 sh->unchecked_isa_dma = 0; /* We can only do PIO */
810 hd->next = NULL; /* build a linked list of all HBAs */
812 if (hd->prev != NULL)
813 SD(hd->prev)->next = sh;
815 if (first_HBA == NULL)
821 static void find_pio_ISA(struct get_conf *buf)
825 for (i = 0; i < MAXISA; i++) {
828 if (!get_pio_conf_PIO(ISAbases[i], buf))
830 if (!register_pio_HBA(ISAbases[i], buf))
831 release_region(ISAbases[i], 9);
838 static void find_pio_EISA(struct get_conf *buf)
847 for (i = 0; i < MAXEISA; i++) {
848 if (EISAbases[i]) { /* Still a possibility ? */
850 base = 0x1c88 + (i * 0x1000);
852 pal1 = inb((u16) base - 8);
853 pal2 = inb((u16) base - 7);
854 pal3 = inb((u16) base - 6);
856 if (((pal1 == 0x12) && (pal2 == 0x14)) || ((pal1 == 0x38) && (pal2 == 0xa3) && (pal3 == 0x82)) || ((pal1 == 0x06) && (pal2 == 0x94) && (pal3 == 0x24))) {
857 DBG(DBG_PROBE, printk(KERN_NOTICE "EISA EATA id tags found: " "%x %x %x \n", (int) pal1, (int) pal2, (int) pal3));
859 if (get_pio_conf_PIO(base, buf)) {
860 DBG(DBG_PROBE && DBG_EISA, print_pio_config(buf));
862 if (!register_pio_HBA(base, buf))
863 release_region(base, 9);
865 printk(KERN_NOTICE "eata_dma: No valid IRQ. HBA " "removed from list\n");
866 release_region(base, 9);
869 /* Nothing found here so we take it from the list */
879 static void find_pio_PCI(struct get_conf *buf)
882 printk("eata_dma: kernel PCI support not enabled. Skipping scan for PCI HBAs.\n");
884 struct pci_dev *dev = NULL;
887 while ((dev = pci_find_device(PCI_VENDOR_ID_DPT, PCI_DEVICE_ID_DPT, dev)) != NULL) {
888 DBG(DBG_PROBE && DBG_PCI, printk("eata_pio: find_PCI, HBA at %s\n", pci_name(dev)));
889 if (pci_enable_device(dev))
892 base = pci_resource_flags(dev, 0);
893 if (base & IORESOURCE_MEM) {
894 printk("eata_pio: invalid base address of device %s\n", pci_name(dev));
897 base = pci_resource_start(dev, 0);
898 /* EISA tag there ? */
899 if ((inb(base) == 0x12) && (inb(base + 1) == 0x14))
900 continue; /* Jep, it's forced, so move on */
901 base += 0x10; /* Now, THIS is the real address */
903 /* We didn't find it in the primary search */
904 if (get_pio_conf_PIO(base, buf)) {
905 if (buf->FORCADR) { /* If the address is forced */
906 release_region(base, 9);
907 continue; /* we'll find it later */
910 /* OK. We made it till here, so we can go now
911 * and register it. We only have to check and
912 * eventually remove it from the EISA and ISA list
915 if (!register_pio_HBA(base, buf)) {
916 release_region(base, 9);
921 for (x = 0; x < MAXISA; ++x) {
922 if (ISAbases[x] == base) {
927 } else if ((base & 0x0fff) == 0x0c88) {
928 x = (base >> 12) & 0x0f;
933 else if (check_blink_state(base)) {
934 printk("eata_pio: HBA is in BLINK state.\n" "Consult your HBAs manual to correct this.\n");
939 #endif /* #ifndef CONFIG_PCI */
942 static int eata_pio_detect(struct scsi_host_template *tpnt)
944 struct Scsi_Host *HBA_ptr;
952 for (i = 0; i <= MAXIRQ; i++)
954 request_irq(i, do_eata_pio_int_handler, SA_INTERRUPT, "EATA-PIO", NULL);
958 if (registered_HBAs != 0) {
959 printk("EATA (Extended Attachment) PIO driver version: %d.%d%s\n"
960 "(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);
962 printk("Registered HBAs:\n");
963 printk("HBA no. Boardtype: Revis: EATA: Bus: BaseIO: IRQ: Ch: ID: Pr:" " QS: SG: CPL:\n");
964 for (i = 1; i <= registered_HBAs; i++) {
965 printk("scsi%-2d: %.10s v%s 2.0%c %s %#.4x %2d %d %d %c"
967 HBA_ptr->host_no, SD(HBA_ptr)->name, SD(HBA_ptr)->revision,
968 SD(HBA_ptr)->EATA_revision, (SD(HBA_ptr)->bustype == 'P') ?
969 "PCI " : (SD(HBA_ptr)->bustype == 'E') ? "EISA" : "ISA ",
970 (uint) HBA_ptr->base, HBA_ptr->irq, SD(HBA_ptr)->channel, HBA_ptr->this_id,
971 SD(HBA_ptr)->primary ? 'Y' : 'N', HBA_ptr->can_queue,
972 HBA_ptr->sg_tablesize, HBA_ptr->cmd_per_lun);
973 HBA_ptr = SD(HBA_ptr)->next;
976 return (registered_HBAs);
979 static struct scsi_host_template driver_template = {
980 .proc_name = "eata_pio",
981 .name = "EATA (Extended Attachment) PIO driver",
982 .proc_info = eata_pio_proc_info,
983 .detect = eata_pio_detect,
984 .release = eata_pio_release,
985 .queuecommand = eata_pio_queue,
986 .eh_abort_handler = eata_pio_abort,
987 .eh_host_reset_handler = eata_pio_host_reset,
988 .use_clustering = ENABLE_CLUSTERING,
991 MODULE_AUTHOR("Michael Neuffer, Alfred Arnold");
992 MODULE_DESCRIPTION("EATA SCSI PIO driver");
993 MODULE_LICENSE("GPL");
995 #include "scsi_module.c"