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>
62 #include <linux/delay.h>
66 #include <scsi/scsi.h>
67 #include <scsi/scsi_cmnd.h>
68 #include <scsi/scsi_device.h>
69 #include <scsi/scsi_host.h>
71 #include "eata_generic.h"
75 static uint ISAbases[MAXISA] = {
76 0x1F0, 0x170, 0x330, 0x230
79 static uint ISAirqs[MAXISA] = {
83 static unsigned char EISAbases[] = {
84 1, 1, 1, 1, 1, 1, 1, 1,
85 1, 1, 1, 1, 1, 1, 1, 1
88 static uint registered_HBAs;
89 static struct Scsi_Host *last_HBA;
90 static struct Scsi_Host *first_HBA;
91 static unsigned char reg_IRQ[16];
92 static unsigned char reg_IRQL[16];
93 static unsigned long int_counter;
94 static unsigned long queue_counter;
96 static struct scsi_host_template driver_template;
100 * inout : decides on the direction of the dataflow and the meaning of the
102 * buffer: If inout==FALSE data is being written to it else read from it
103 * *start: If inout==FALSE start of the valid data in the buffer
104 * offset: If inout==FALSE offset from the beginning of the imaginary file
105 * from which we start writing into the buffer
106 * length: If inout==FALSE max number of bytes to be written into the buffer
107 * else number of bytes in the buffer
109 static int eata_pio_proc_info(struct Scsi_Host *shost, char *buffer, char **start, off_t offset,
114 off_t begin = 0, pos = 0;
119 memset(buff, 0, sizeof(buff));
121 size = sprintf(buffer+len, "EATA (Extended Attachment) PIO driver version: "
122 "%d.%d%s\n",VER_MAJOR, VER_MINOR, VER_SUB);
123 len += size; pos = begin + len;
124 size = sprintf(buffer + len, "queued commands: %10ld\n"
125 "processed interrupts:%10ld\n", queue_counter, int_counter);
126 len += size; pos = begin + len;
128 size = sprintf(buffer + len, "\nscsi%-2d: HBA %.10s\n",
129 shost->host_no, SD(shost)->name);
132 size = sprintf(buffer + len, "Firmware revision: v%s\n",
133 SD(shost)->revision);
136 size = sprintf(buffer + len, "IO: PIO\n");
139 size = sprintf(buffer + len, "Base IO : %#.4x\n", (u32) shost->base);
142 size = sprintf(buffer + len, "Host Bus: %s\n",
143 (SD(shost)->bustype == 'P')?"PCI ":
144 (SD(shost)->bustype == 'E')?"EISA":"ISA ");
153 if (pos > offset + length)
157 DBG(DBG_PROC, printk("2pos: %ld offset: %ld len: %d\n", pos, offset, len));
158 *start=buffer+(offset-begin); /* Start of wanted data */
159 len-=(offset-begin); /* Start slop */
161 len = length; /* Ending slop */
162 DBG(DBG_PROC, printk("3pos: %ld offset: %ld len: %d\n", pos, offset, len));
167 static int eata_pio_release(struct Scsi_Host *sh)
169 if (sh->irq && reg_IRQ[sh->irq] == 1)
170 free_irq(sh->irq, NULL);
173 if (SD(sh)->channel == 0) {
174 if (sh->io_port && sh->n_io_port)
175 release_region(sh->io_port, sh->n_io_port);
180 static void IncStat(struct scsi_pointer *SCp, uint Increment)
182 SCp->ptr += Increment;
183 if ((SCp->this_residual -= Increment) == 0) {
184 if ((--SCp->buffers_residual) == 0)
188 SCp->ptr = page_address(SCp->buffer->page) + SCp->buffer->offset;
189 SCp->this_residual = SCp->buffer->length;
194 static void eata_pio_int_handler(int irq, void *dev_id, struct pt_regs *regs);
196 static irqreturn_t do_eata_pio_int_handler(int irq, void *dev_id,
197 struct pt_regs *regs)
200 struct Scsi_Host *dev = dev_id;
202 spin_lock_irqsave(dev->host_lock, flags);
203 eata_pio_int_handler(irq, dev_id, regs);
204 spin_unlock_irqrestore(dev->host_lock, flags);
208 static void eata_pio_int_handler(int irq, void *dev_id, struct pt_regs *regs)
210 uint eata_stat = 0xfffff;
211 struct scsi_cmnd *cmd;
216 struct Scsi_Host *sh;
217 unsigned short zwickel = 0;
218 unsigned char stat, odd;
220 for (x = 1, sh = first_HBA; x <= registered_HBAs; x++, sh = SD(sh)->prev)
224 if (inb((uint) sh->base + HA_RSTATUS) & HA_SBUSY)
233 base = (uint) cmd->device->host->base;
236 stat = inb(base + HA_RSTATUS);
237 if (stat & HA_SDRQ) {
241 while ((cmd->SCp.Status) && ((z > 0) || (odd))) {
243 *(cmd->SCp.ptr) = zwickel >> 8;
244 IncStat(&cmd->SCp, 1);
247 x = min_t(unsigned int, z, cmd->SCp.this_residual / 2);
248 insw(base + HA_RDATA, cmd->SCp.ptr, x);
250 IncStat(&cmd->SCp, 2 * x);
251 if ((z > 0) && (cmd->SCp.this_residual == 1)) {
252 zwickel = inw(base + HA_RDATA);
253 *(cmd->SCp.ptr) = zwickel & 0xff;
254 IncStat(&cmd->SCp, 1);
260 zwickel = inw(base + HA_RDATA);
263 } else { /* cp->DataOut */
267 while ((cmd->SCp.Status) && ((z > 0) || (odd))) {
269 zwickel += *(cmd->SCp.ptr) << 8;
270 IncStat(&cmd->SCp, 1);
271 outw(zwickel, base + HA_RDATA);
275 x = min_t(unsigned int, z, cmd->SCp.this_residual / 2);
276 outsw(base + HA_RDATA, cmd->SCp.ptr, x);
278 IncStat(&cmd->SCp, 2 * x);
279 if ((z > 0) && (cmd->SCp.this_residual == 1)) {
280 zwickel = *(cmd->SCp.ptr);
282 IncStat(&cmd->SCp, 1);
286 while (z > 0 || odd) {
287 outw(zwickel, base + HA_RDATA);
294 while ((stat & HA_SDRQ) || ((stat & HA_SMORE) && hd->moresupport));
296 /* terminate handler if HBA goes busy again, i.e. transfers
302 /* OK, this is quite stupid, but I haven't found any correct
303 * way to get HBA&SCSI status so far */
305 if (!(inb(base + HA_RSTATUS) & HA_SERROR)) {
306 cmd->result = (DID_OK << 16);
307 hd->devflags |= (1 << cp->cp_id);
308 } else if (hd->devflags & 1 << cp->cp_id)
309 cmd->result = (DID_OK << 16) + 0x02;
311 cmd->result = (DID_NO_CONNECT << 16);
313 if (cp->status == LOCKED) {
315 eata_stat = inb(base + HA_RSTATUS);
316 printk(KERN_CRIT "eata_pio: int_handler, freeing locked " "queueslot\n");
321 printk(KERN_DEBUG "stat: %#.2x, result: %#.8x\n", stat, cmd->result);
324 cp->status = FREE; /* now we can release the slot */
332 static inline uint eata_pio_send_command(uint base, unsigned char command)
336 while (inb(base + HA_RSTATUS) & HA_SBUSY)
340 /* Enable interrupts for HBA. It is not the best way to do it at this
341 * place, but I hope that it doesn't interfere with the IDE driver
342 * initialization this way */
344 outb(HA_CTRL_8HEADS, base + HA_CTRLREG);
346 outb(command, base + HA_WCOMMAND);
350 static int eata_pio_queue(struct scsi_cmnd *cmd,
351 void (*done)(struct scsi_cmnd *))
357 struct Scsi_Host *sh;
363 sh = cmd->device->host;
364 base = (uint) sh->base;
366 /* use only slot 0, as 2001 can handle only one cmd at a time */
370 if (hd->ccb[y].status != FREE) {
372 DBG(DBG_QUEUE, printk(KERN_EMERG "can_queue %d, x %d, y %d\n", sh->can_queue, x, y));
374 panic(KERN_EMERG "eata_pio: run out of queue slots cmdno:%ld " "intrno: %ld\n", queue_counter, int_counter);
376 panic(KERN_EMERG "eata_pio: run out of queue slots....\n");
382 memset(cp, 0, sizeof(struct eata_ccb));
383 memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
385 cp->status = USED; /* claim free slot */
387 DBG(DBG_QUEUE, scmd_printk(KERN_DEBUG, cmd,
388 "eata_pio_queue pid %ld, y %d\n",
391 cmd->scsi_done = (void *) done;
393 if (cmd->sc_data_direction == DMA_TO_DEVICE)
394 cp->DataOut = 1; /* Output mode */
396 cp->DataIn = 0; /* Input mode */
398 cp->Interpret = (cmd->device->id == hd->hostid);
399 cp->cp_datalen = htonl((unsigned long) cmd->request_bufflen);
400 cp->Auto_Req_Sen = 0;
401 cp->cp_reqDMA = htonl(0);
404 cp->cp_id = cmd->device->id;
405 cp->cp_lun = cmd->device->lun;
408 memcpy(cp->cp_cdb, cmd->cmnd, COMMAND_SIZE(*cmd->cmnd));
410 cp->cp_statDMA = htonl(0);
414 cmd->host_scribble = (char *) &hd->ccb[y];
416 if (cmd->use_sg == 0) {
417 cmd->SCp.buffers_residual = 1;
418 cmd->SCp.ptr = cmd->request_buffer;
419 cmd->SCp.this_residual = cmd->request_bufflen;
420 cmd->SCp.buffer = NULL;
422 cmd->SCp.buffer = cmd->request_buffer;
423 cmd->SCp.buffers_residual = cmd->use_sg;
424 cmd->SCp.ptr = page_address(cmd->SCp.buffer->page) + cmd->SCp.buffer->offset;
425 cmd->SCp.this_residual = cmd->SCp.buffer->length;
427 cmd->SCp.Status = (cmd->SCp.this_residual != 0); /* TRUE as long as bytes
430 if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP)) {
431 cmd->result = DID_BUS_BUSY << 16;
432 scmd_printk(KERN_NOTICE, cmd,
433 "eata_pio_queue pid %ld, HBA busy, "
434 "returning DID_BUS_BUSY, done.\n", cmd->pid);
440 while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
442 outsw(base + HA_RDATA, cp, hd->cplen);
443 outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND);
444 for (x = 0; x < hd->cppadlen; x++)
445 outw(0, base + HA_RDATA);
447 DBG(DBG_QUEUE, scmd_printk(KERN_DEBUG, cmd,
448 "Queued base %#.4lx pid: %ld "
449 "slot %d irq %d\n", (long) sh->base, cmd->pid, y, sh->irq));
454 static int eata_pio_abort(struct scsi_cmnd *cmd)
458 DBG(DBG_ABNORM, scmd_printk(KERN_WARNING, cmd,
459 "eata_pio_abort called pid: %ld\n",
462 while (inb(cmd->device->host->base + HA_RAUXSTAT) & HA_ABUSY)
464 printk(KERN_WARNING "eata_pio: abort, timeout error.\n");
467 if (CD(cmd)->status == FREE) {
468 DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_NOT_RUNNING\n"));
471 if (CD(cmd)->status == USED) {
472 DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_BUSY\n"));
473 /* We want to sleep a bit more here */
474 return FAILED; /* SNOOZE */
476 if (CD(cmd)->status == RESET) {
477 printk(KERN_WARNING "eata_pio: abort, command reset error.\n");
480 if (CD(cmd)->status == LOCKED) {
481 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio: abort, queue slot " "locked.\n"));
484 panic("eata_pio: abort: invalid slot status\n");
487 static int eata_pio_host_reset(struct scsi_cmnd *cmd)
490 unsigned char success = 0;
491 struct scsi_cmnd *sp;
492 struct Scsi_Host *host = cmd->device->host;
494 DBG(DBG_ABNORM, scmd_printk(KERN_WARNING, cmd,
495 "eata_pio_reset called pid:%ld\n",
498 spin_lock_irq(host->host_lock);
500 if (HD(cmd)->state == RESET) {
501 printk(KERN_WARNING "eata_pio_reset: exit, already in reset.\n");
502 spin_unlock_irq(host->host_lock);
506 /* force all slots to be free */
508 for (x = 0; x < cmd->device->host->can_queue; x++) {
510 if (HD(cmd)->ccb[x].status == FREE)
513 sp = HD(cmd)->ccb[x].cmd;
514 HD(cmd)->ccb[x].status = RESET;
515 printk(KERN_WARNING "eata_pio_reset: slot %d in reset, pid %ld.\n", x, sp->pid);
518 panic("eata_pio_reset: slot %d, sp==NULL.\n", x);
521 /* hard reset the HBA */
522 outb(EATA_CMD_RESET, (uint) cmd->device->host->base + HA_WCOMMAND);
524 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: board reset done.\n"));
525 HD(cmd)->state = RESET;
527 spin_unlock_irq(host->host_lock);
529 spin_lock_irq(host->host_lock);
531 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: interrupts disabled, " "loops %d.\n", limit));
533 for (x = 0; x < cmd->device->host->can_queue; x++) {
535 /* Skip slots already set free by interrupt */
536 if (HD(cmd)->ccb[x].status != RESET)
539 sp = HD(cmd)->ccb[x].cmd;
540 sp->result = DID_RESET << 16;
542 /* This mailbox is terminated */
543 printk(KERN_WARNING "eata_pio_reset: reset ccb %d.\n", x);
544 HD(cmd)->ccb[x].status = FREE;
551 spin_unlock_irq(host->host_lock);
553 if (success) { /* hmmm... */
554 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, success.\n"));
557 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, wakeup.\n"));
562 static char *get_pio_board_data(unsigned long base, uint irq, uint id, unsigned long cplen, unsigned short cppadlen)
565 static char buff[256];
568 memset(&cp, 0, sizeof(struct eata_ccb));
569 memset(buff, 0, sizeof(buff));
572 cp.Interpret = 1; /* Interpret command */
574 cp.cp_datalen = htonl(254);
575 cp.cp_dataDMA = htonl(0);
580 cp.cp_cdb[0] = INQUIRY;
587 if (eata_pio_send_command((uint) base, EATA_CMD_PIO_SEND_CP))
589 while (!(inb(base + HA_RSTATUS) & HA_SDRQ));
590 outsw(base + HA_RDATA, &cp, cplen);
591 outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND);
592 for (z = 0; z < cppadlen; z++)
593 outw(0, base + HA_RDATA);
595 while (inb(base + HA_RSTATUS) & HA_SBUSY);
596 if (inb(base + HA_RSTATUS) & HA_SERROR)
598 else if (!(inb(base + HA_RSTATUS) & HA_SDRQ))
601 insw(base + HA_RDATA, &buff, 127);
602 while (inb(base + HA_RSTATUS) & HA_SDRQ)
603 inw(base + HA_RDATA);
608 static int get_pio_conf_PIO(u32 base, struct get_conf *buf)
610 unsigned long loop = HZ / 2;
614 if (!request_region(base, 9, "eata_pio"))
617 memset(buf, 0, sizeof(struct get_conf));
619 while (inb(base + HA_RSTATUS) & HA_SBUSY)
623 DBG(DBG_PIO && DBG_PROBE, printk(KERN_DEBUG "Issuing PIO READ CONFIG to HBA at %#x\n", base));
624 eata_pio_send_command(base, EATA_CMD_PIO_READ_CONFIG);
627 for (p = (unsigned short *) buf; (long) p <= ((long) buf + (sizeof(struct get_conf) / 2)); p++) {
628 while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
633 *p = inw(base + HA_RDATA);
635 if (inb(base + HA_RSTATUS) & HA_SERROR) {
636 DBG(DBG_PROBE, printk("eata_dma: get_conf_PIO, error during "
637 "transfer for HBA at %x\n", base));
641 if (htonl(EATA_SIGNATURE) != buf->signature)
644 DBG(DBG_PIO && DBG_PROBE, printk(KERN_NOTICE "EATA Controller found "
645 "at %#4x EATA Level: %x\n",
646 base, (uint) (buf->version)));
648 while (inb(base + HA_RSTATUS) & HA_SDRQ)
649 inw(base + HA_RDATA);
651 if (!ALLOW_DMA_BOARDS) {
652 for (z = 0; z < MAXISA; z++)
653 if (base == ISAbases[z]) {
654 buf->IRQ = ISAirqs[z];
662 release_region(base, 9);
666 static void print_pio_config(struct get_conf *gc)
668 printk("Please check values: (read config data)\n");
669 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);
670 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);
671 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);
674 static uint print_selftest(uint base)
676 unsigned char buffer[512];
681 printk("eata_pio: executing controller self test & setup...\n");
682 while (inb(base + HA_RSTATUS) & HA_SBUSY);
683 outb(EATA_CMD_PIO_SETUPTEST, base + HA_WCOMMAND);
685 while (inb(base + HA_RSTATUS) & HA_SBUSY)
687 if (inb(base + HA_RSTATUS) & HA_SDRQ) {
688 insw(base + HA_RDATA, &buffer, 256);
690 /* no beeps please... */
691 for (z = 0; z < 511 && buffer[z]; z++)
693 printk("%c", buffer[z]);
696 } while (inb(base + HA_RSTATUS) & (HA_SBUSY | HA_SDRQ));
698 return (!(inb(base + HA_RSTATUS) & HA_SERROR));
701 static int register_pio_HBA(long base, struct get_conf *gc)
703 unsigned long size = 0;
706 unsigned short cppadlen;
707 struct Scsi_Host *sh;
710 DBG(DBG_REGISTER, print_pio_config(gc));
712 if (gc->DMA_support) {
713 printk("HBA at %#.4lx supports DMA. Please use EATA-DMA driver.\n", base);
714 if (!ALLOW_DMA_BOARDS)
718 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) {
719 printk("HBA at %#lx didn't react on INQUIRY. Sorry.\n", (unsigned long) base);
723 if (!print_selftest(base) && !ALLOW_DMA_BOARDS) {
724 printk("HBA at %#lx failed while performing self test & setup.\n", (unsigned long) base);
728 size = sizeof(hostdata) + (sizeof(struct eata_ccb) * ntohs(gc->queuesiz));
730 sh = scsi_register(&driver_template, size);
734 if (!reg_IRQ[gc->IRQ]) { /* Interrupt already registered ? */
735 if (!request_irq(gc->IRQ, do_eata_pio_int_handler, SA_INTERRUPT, "EATA-PIO", sh)) {
738 reg_IRQL[gc->IRQ] = 1; /* IRQ is edge triggered */
740 printk("Couldn't allocate IRQ %d, Sorry.\n", gc->IRQ);
743 } else { /* More than one HBA on this IRQ */
744 if (reg_IRQL[gc->IRQ]) {
745 printk("Can't support more than one HBA on this IRQ,\n" " if the IRQ is edge triggered. Sorry.\n");
753 memset(hd->ccb, 0, (sizeof(struct eata_ccb) * ntohs(gc->queuesiz)));
754 memset(hd->reads, 0, sizeof(unsigned long) * 26);
756 strlcpy(SD(sh)->vendor, &buff[8], sizeof(SD(sh)->vendor));
757 strlcpy(SD(sh)->name, &buff[16], sizeof(SD(sh)->name));
758 SD(sh)->revision[0] = buff[32];
759 SD(sh)->revision[1] = buff[33];
760 SD(sh)->revision[2] = buff[34];
761 SD(sh)->revision[3] = '.';
762 SD(sh)->revision[4] = buff[35];
763 SD(sh)->revision[5] = 0;
765 switch (ntohl(gc->len)) {
767 SD(sh)->EATA_revision = 'a';
770 SD(sh)->EATA_revision = 'b';
773 SD(sh)->EATA_revision = 'c';
776 SD(sh)->EATA_revision = 'z';
778 SD(sh)->EATA_revision = '?';
781 if (ntohl(gc->len) >= 0x22) {
783 hd->bustype = IS_PCI;
784 else if (gc->is_EISA)
785 hd->bustype = IS_EISA;
787 hd->bustype = IS_ISA;
790 hd->bustype = IS_PCI;
791 else if (buff[21] == '2')
792 hd->bustype = IS_EISA;
794 hd->bustype = IS_ISA;
797 SD(sh)->cplen = cplen;
798 SD(sh)->cppadlen = cppadlen;
799 SD(sh)->hostid = gc->scsi_id[3];
800 SD(sh)->devflags = 1 << gc->scsi_id[3];
801 SD(sh)->moresupport = gc->MORE_support;
802 sh->unique_id = base;
807 sh->dma_channel = PIO;
808 sh->this_id = gc->scsi_id[3];
811 sh->sg_tablesize = SG_ALL;
823 sh->unchecked_isa_dma = 0; /* We can only do PIO */
825 hd->next = NULL; /* build a linked list of all HBAs */
827 if (hd->prev != NULL)
828 SD(hd->prev)->next = sh;
830 if (first_HBA == NULL)
836 static void find_pio_ISA(struct get_conf *buf)
840 for (i = 0; i < MAXISA; i++) {
843 if (!get_pio_conf_PIO(ISAbases[i], buf))
845 if (!register_pio_HBA(ISAbases[i], buf))
846 release_region(ISAbases[i], 9);
853 static void find_pio_EISA(struct get_conf *buf)
862 for (i = 0; i < MAXEISA; i++) {
863 if (EISAbases[i]) { /* Still a possibility ? */
865 base = 0x1c88 + (i * 0x1000);
867 pal1 = inb((u16) base - 8);
868 pal2 = inb((u16) base - 7);
869 pal3 = inb((u16) base - 6);
871 if (((pal1 == 0x12) && (pal2 == 0x14)) || ((pal1 == 0x38) && (pal2 == 0xa3) && (pal3 == 0x82)) || ((pal1 == 0x06) && (pal2 == 0x94) && (pal3 == 0x24))) {
872 DBG(DBG_PROBE, printk(KERN_NOTICE "EISA EATA id tags found: " "%x %x %x \n", (int) pal1, (int) pal2, (int) pal3));
874 if (get_pio_conf_PIO(base, buf)) {
875 DBG(DBG_PROBE && DBG_EISA, print_pio_config(buf));
877 if (!register_pio_HBA(base, buf))
878 release_region(base, 9);
880 printk(KERN_NOTICE "eata_dma: No valid IRQ. HBA " "removed from list\n");
881 release_region(base, 9);
884 /* Nothing found here so we take it from the list */
894 static void find_pio_PCI(struct get_conf *buf)
897 printk("eata_dma: kernel PCI support not enabled. Skipping scan for PCI HBAs.\n");
899 struct pci_dev *dev = NULL;
902 while ((dev = pci_find_device(PCI_VENDOR_ID_DPT, PCI_DEVICE_ID_DPT, dev)) != NULL) {
903 DBG(DBG_PROBE && DBG_PCI, printk("eata_pio: find_PCI, HBA at %s\n", pci_name(dev)));
904 if (pci_enable_device(dev))
907 base = pci_resource_flags(dev, 0);
908 if (base & IORESOURCE_MEM) {
909 printk("eata_pio: invalid base address of device %s\n", pci_name(dev));
912 base = pci_resource_start(dev, 0);
913 /* EISA tag there ? */
914 if ((inb(base) == 0x12) && (inb(base + 1) == 0x14))
915 continue; /* Jep, it's forced, so move on */
916 base += 0x10; /* Now, THIS is the real address */
918 /* We didn't find it in the primary search */
919 if (get_pio_conf_PIO(base, buf)) {
920 if (buf->FORCADR) { /* If the address is forced */
921 release_region(base, 9);
922 continue; /* we'll find it later */
925 /* OK. We made it till here, so we can go now
926 * and register it. We only have to check and
927 * eventually remove it from the EISA and ISA list
930 if (!register_pio_HBA(base, buf)) {
931 release_region(base, 9);
936 for (x = 0; x < MAXISA; ++x) {
937 if (ISAbases[x] == base) {
942 } else if ((base & 0x0fff) == 0x0c88) {
943 x = (base >> 12) & 0x0f;
948 else if (check_blink_state(base)) {
949 printk("eata_pio: HBA is in BLINK state.\n" "Consult your HBAs manual to correct this.\n");
954 #endif /* #ifndef CONFIG_PCI */
957 static int eata_pio_detect(struct scsi_host_template *tpnt)
959 struct Scsi_Host *HBA_ptr;
967 for (i = 0; i <= MAXIRQ; i++)
969 request_irq(i, do_eata_pio_int_handler, SA_INTERRUPT, "EATA-PIO", NULL);
973 if (registered_HBAs != 0) {
974 printk("EATA (Extended Attachment) PIO driver version: %d.%d%s\n"
975 "(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);
977 printk("Registered HBAs:\n");
978 printk("HBA no. Boardtype: Revis: EATA: Bus: BaseIO: IRQ: Ch: ID: Pr:" " QS: SG: CPL:\n");
979 for (i = 1; i <= registered_HBAs; i++) {
980 printk("scsi%-2d: %.10s v%s 2.0%c %s %#.4x %2d %d %d %c"
982 HBA_ptr->host_no, SD(HBA_ptr)->name, SD(HBA_ptr)->revision,
983 SD(HBA_ptr)->EATA_revision, (SD(HBA_ptr)->bustype == 'P') ?
984 "PCI " : (SD(HBA_ptr)->bustype == 'E') ? "EISA" : "ISA ",
985 (uint) HBA_ptr->base, HBA_ptr->irq, SD(HBA_ptr)->channel, HBA_ptr->this_id,
986 SD(HBA_ptr)->primary ? 'Y' : 'N', HBA_ptr->can_queue,
987 HBA_ptr->sg_tablesize, HBA_ptr->cmd_per_lun);
988 HBA_ptr = SD(HBA_ptr)->next;
991 return (registered_HBAs);
994 static struct scsi_host_template driver_template = {
995 .proc_name = "eata_pio",
996 .name = "EATA (Extended Attachment) PIO driver",
997 .proc_info = eata_pio_proc_info,
998 .detect = eata_pio_detect,
999 .release = eata_pio_release,
1000 .queuecommand = eata_pio_queue,
1001 .eh_abort_handler = eata_pio_abort,
1002 .eh_host_reset_handler = eata_pio_host_reset,
1003 .use_clustering = ENABLE_CLUSTERING,
1006 MODULE_AUTHOR("Michael Neuffer, Alfred Arnold");
1007 MODULE_DESCRIPTION("EATA SCSI PIO driver");
1008 MODULE_LICENSE("GPL");
1010 #include "scsi_module.c"