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/module.h>
50 #include <linux/kernel.h>
51 #include <linux/sched.h>
52 #include <linux/string.h>
53 #include <linux/ioport.h>
54 #include <linux/slab.h>
56 #include <linux/pci.h>
57 #include <linux/proc_fs.h>
58 #include <linux/interrupt.h>
59 #include <linux/stat.h>
60 #include <linux/config.h>
61 #include <linux/blkdev.h>
62 #include <linux/spinlock.h>
67 #include <scsi/scsicam.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;
96 * inout : decides on the direction of the dataflow and the meaning of the
98 * buffer: If inout==FALSE data is being written to it else read from it
99 * *start: If inout==FALSE start of the valid data in the buffer
100 * offset: If inout==FALSE offset from the beginning of the imaginary file
101 * from which we start writing into the buffer
102 * length: If inout==FALSE max number of bytes to be written into the buffer
103 * else number of bytes in the buffer
105 static int eata_pio_proc_info(struct Scsi_Host *shost, char *buffer, char **start, off_t offset,
110 off_t begin = 0, pos = 0;
115 memset(buff, 0, sizeof(buff));
117 size = sprintf(buffer+len, "EATA (Extended Attachment) PIO driver version: "
118 "%d.%d%s\n",VER_MAJOR, VER_MINOR, VER_SUB);
119 len += size; pos = begin + len;
120 size = sprintf(buffer + len, "queued commands: %10ld\n"
121 "processed interrupts:%10ld\n", queue_counter, int_counter);
122 len += size; pos = begin + len;
124 size = sprintf(buffer + len, "\nscsi%-2d: HBA %.10s\n",
125 shost->host_no, SD(shost)->name);
128 size = sprintf(buffer + len, "Firmware revision: v%s\n",
129 SD(shost)->revision);
132 size = sprintf(buffer + len, "IO: PIO\n");
135 size = sprintf(buffer + len, "Base IO : %#.4x\n", (u32) shost->base);
138 size = sprintf(buffer + len, "Host Bus: %s\n",
139 (SD(shost)->bustype == 'P')?"PCI ":
140 (SD(shost)->bustype == 'E')?"EISA":"ISA ");
149 if (pos > offset + length)
153 DBG(DBG_PROC, printk("2pos: %ld offset: %ld len: %d\n", pos, offset, len));
154 *start=buffer+(offset-begin); /* Start of wanted data */
155 len-=(offset-begin); /* Start slop */
157 len = length; /* Ending slop */
158 DBG(DBG_PROC, printk("3pos: %ld offset: %ld len: %d\n", pos, offset, len));
163 static int eata_pio_release(struct Scsi_Host *sh)
165 if (sh->irq && reg_IRQ[sh->irq] == 1)
166 free_irq(sh->irq, NULL);
169 if (SD(sh)->channel == 0) {
170 if (sh->io_port && sh->n_io_port)
171 release_region(sh->io_port, sh->n_io_port);
176 static void IncStat(Scsi_Pointer * SCp, uint Increment)
178 SCp->ptr += Increment;
179 if ((SCp->this_residual -= Increment) == 0) {
180 if ((--SCp->buffers_residual) == 0)
184 SCp->ptr = page_address(SCp->buffer->page) + SCp->buffer->offset;
185 SCp->this_residual = SCp->buffer->length;
190 static void eata_pio_int_handler(int irq, void *dev_id, struct pt_regs *regs);
192 static irqreturn_t do_eata_pio_int_handler(int irq, void *dev_id,
193 struct pt_regs *regs)
196 struct Scsi_Host *dev = dev_id;
198 spin_lock_irqsave(dev->host_lock, flags);
199 eata_pio_int_handler(irq, dev_id, regs);
200 spin_unlock_irqrestore(dev->host_lock, flags);
204 static void eata_pio_int_handler(int irq, void *dev_id, struct pt_regs *regs)
206 uint eata_stat = 0xfffff;
212 struct Scsi_Host *sh;
213 unsigned short zwickel = 0;
214 unsigned char stat, odd;
216 for (x = 1, sh = first_HBA; x <= registered_HBAs; x++, sh = SD(sh)->prev)
220 if (inb((uint) sh->base + HA_RSTATUS) & HA_SBUSY)
229 base = (uint) cmd->device->host->base;
232 stat = inb(base + HA_RSTATUS);
233 if (stat & HA_SDRQ) {
237 while ((cmd->SCp.Status) && ((z > 0) || (odd))) {
239 *(cmd->SCp.ptr) = zwickel >> 8;
240 IncStat(&cmd->SCp, 1);
243 x = min_t(unsigned int, z, cmd->SCp.this_residual / 2);
244 insw(base + HA_RDATA, cmd->SCp.ptr, x);
246 IncStat(&cmd->SCp, 2 * x);
247 if ((z > 0) && (cmd->SCp.this_residual == 1)) {
248 zwickel = inw(base + HA_RDATA);
249 *(cmd->SCp.ptr) = zwickel & 0xff;
250 IncStat(&cmd->SCp, 1);
256 zwickel = inw(base + HA_RDATA);
259 } else { /* cp->DataOut */
263 while ((cmd->SCp.Status) && ((z > 0) || (odd))) {
265 zwickel += *(cmd->SCp.ptr) << 8;
266 IncStat(&cmd->SCp, 1);
267 outw(zwickel, base + HA_RDATA);
271 x = min_t(unsigned int, z, cmd->SCp.this_residual / 2);
272 outsw(base + HA_RDATA, cmd->SCp.ptr, x);
274 IncStat(&cmd->SCp, 2 * x);
275 if ((z > 0) && (cmd->SCp.this_residual == 1)) {
276 zwickel = *(cmd->SCp.ptr);
278 IncStat(&cmd->SCp, 1);
282 while (z > 0 || odd) {
283 outw(zwickel, base + HA_RDATA);
290 while ((stat & HA_SDRQ) || ((stat & HA_SMORE) && hd->moresupport));
292 /* terminate handler if HBA goes busy again, i.e. transfers
298 /* OK, this is quite stupid, but I haven't found any correct
299 * way to get HBA&SCSI status so far */
301 if (!(inb(base + HA_RSTATUS) & HA_SERROR)) {
302 cmd->result = (DID_OK << 16);
303 hd->devflags |= (1 << cp->cp_id);
304 } else if (hd->devflags & 1 << cp->cp_id)
305 cmd->result = (DID_OK << 16) + 0x02;
307 cmd->result = (DID_NO_CONNECT << 16);
309 if (cp->status == LOCKED) {
311 eata_stat = inb(base + HA_RSTATUS);
312 printk(KERN_CRIT "eata_pio: int_handler, freeing locked " "queueslot\n");
317 printk(KERN_DEBUG "stat: %#.2x, result: %#.8x\n", stat, cmd->result);
320 cp->status = FREE; /* now we can release the slot */
328 static inline uint eata_pio_send_command(uint base, unsigned char command)
332 while (inb(base + HA_RSTATUS) & HA_SBUSY)
336 /* Enable interrupts for HBA. It is not the best way to do it at this
337 * place, but I hope that it doesn't interfere with the IDE driver
338 * initialization this way */
340 outb(HA_CTRL_8HEADS, base + HA_CTRLREG);
342 outb(command, base + HA_WCOMMAND);
346 static int eata_pio_queue(Scsi_Cmnd * cmd, void (*done) (Scsi_Cmnd *))
352 struct Scsi_Host *sh;
358 sh = cmd->device->host;
359 base = (uint) sh->base;
361 /* use only slot 0, as 2001 can handle only one cmd at a time */
365 if (hd->ccb[y].status != FREE) {
367 DBG(DBG_QUEUE, printk(KERN_EMERG "can_queue %d, x %d, y %d\n", sh->can_queue, x, y));
369 panic(KERN_EMERG "eata_pio: run out of queue slots cmdno:%ld " "intrno: %ld\n", queue_counter, int_counter);
371 panic(KERN_EMERG "eata_pio: run out of queue slots....\n");
377 memset(cp, 0, sizeof(struct eata_ccb));
378 memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
380 cp->status = USED; /* claim free slot */
382 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));
384 cmd->scsi_done = (void *) done;
386 if(cmd->sc_data_direction == SCSI_DATA_WRITE)
387 cp->DataOut = TRUE; /* Output mode */
389 cp->DataIn = TRUE; /* Input mode */
391 cp->Interpret = (cmd->device->id == hd->hostid);
392 cp->cp_datalen = htonl((unsigned long) cmd->request_bufflen);
393 cp->Auto_Req_Sen = FALSE;
394 cp->cp_reqDMA = htonl(0);
397 cp->cp_id = cmd->device->id;
398 cp->cp_lun = cmd->device->lun;
399 cp->cp_dispri = FALSE;
400 cp->cp_identify = TRUE;
401 memcpy(cp->cp_cdb, cmd->cmnd, COMMAND_SIZE(*cmd->cmnd));
403 cp->cp_statDMA = htonl(0);
407 cmd->host_scribble = (char *) &hd->ccb[y];
409 if (cmd->use_sg == 0) {
410 cmd->SCp.buffers_residual = 1;
411 cmd->SCp.ptr = cmd->request_buffer;
412 cmd->SCp.this_residual = cmd->request_bufflen;
413 cmd->SCp.buffer = NULL;
415 cmd->SCp.buffer = cmd->request_buffer;
416 cmd->SCp.buffers_residual = cmd->use_sg;
417 cmd->SCp.ptr = page_address(cmd->SCp.buffer->page) + cmd->SCp.buffer->offset;
418 cmd->SCp.this_residual = cmd->SCp.buffer->length;
420 cmd->SCp.Status = (cmd->SCp.this_residual != 0); /* TRUE as long as bytes
423 if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP)) {
424 cmd->result = DID_BUS_BUSY << 16;
425 printk(KERN_NOTICE "eata_pio_queue target %d, pid %ld, HBA busy, " "returning DID_BUS_BUSY, done.\n", cmd->device->id, cmd->pid);
431 while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
433 outsw(base + HA_RDATA, cp, hd->cplen);
434 outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND);
435 for (x = 0; x < hd->cppadlen; x++)
436 outw(0, base + HA_RDATA);
438 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));
443 static int eata_pio_abort(Scsi_Cmnd * cmd)
447 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));
450 while (inb(cmd->device->host->base + HA_RAUXSTAT) & HA_ABUSY)
452 printk(KERN_WARNING "eata_pio: abort, timeout error.\n");
455 if (CD(cmd)->status == FREE) {
456 DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_NOT_RUNNING\n"));
459 if (CD(cmd)->status == USED) {
460 DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_BUSY\n"));
461 /* We want to sleep a bit more here */
462 return FAILED; /* SNOOZE */
464 if (CD(cmd)->status == RESET) {
465 printk(KERN_WARNING "eata_pio: abort, command reset error.\n");
468 if (CD(cmd)->status == LOCKED) {
469 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio: abort, queue slot " "locked.\n"));
472 panic("eata_pio: abort: invalid slot status\n");
475 static int eata_pio_host_reset(Scsi_Cmnd * cmd)
478 unsigned char success = FALSE;
480 struct Scsi_Host *host = cmd->device->host;
482 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));
484 if (HD(cmd)->state == RESET) {
485 printk(KERN_WARNING "eata_pio_reset: exit, already in reset.\n");
489 /* force all slots to be free */
491 for (x = 0; x < cmd->device->host->can_queue; x++) {
493 if (HD(cmd)->ccb[x].status == FREE)
496 sp = HD(cmd)->ccb[x].cmd;
497 HD(cmd)->ccb[x].status = RESET;
498 printk(KERN_WARNING "eata_pio_reset: slot %d in reset, pid %ld.\n", x, sp->pid);
501 panic("eata_pio_reset: slot %d, sp==NULL.\n", x);
504 /* hard reset the HBA */
505 outb(EATA_CMD_RESET, (uint) cmd->device->host->base + HA_WCOMMAND);
507 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: board reset done.\n"));
508 HD(cmd)->state = RESET;
510 spin_unlock_irq(host->host_lock);
511 set_current_state(TASK_UNINTERRUPTIBLE);
512 schedule_timeout(3 * HZ);
513 spin_lock_irq(host->host_lock);
515 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: interrupts disabled, " "loops %d.\n", limit));
517 for (x = 0; x < cmd->device->host->can_queue; x++) {
519 /* Skip slots already set free by interrupt */
520 if (HD(cmd)->ccb[x].status != RESET)
523 sp = HD(cmd)->ccb[x].cmd;
524 sp->result = DID_RESET << 16;
526 /* This mailbox is terminated */
527 printk(KERN_WARNING "eata_pio_reset: reset ccb %d.\n", x);
528 HD(cmd)->ccb[x].status = FREE;
533 HD(cmd)->state = FALSE;
535 if (success) { /* hmmm... */
536 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, success.\n"));
539 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, wakeup.\n"));
544 static char *get_pio_board_data(unsigned long base, uint irq, uint id, unsigned long cplen, unsigned short cppadlen)
547 static char buff[256];
550 memset(&cp, 0, sizeof(struct eata_ccb));
551 memset(buff, 0, sizeof(buff));
554 cp.Interpret = TRUE; /* Interpret command */
556 cp.cp_datalen = htonl(254);
557 cp.cp_dataDMA = htonl(0);
562 cp.cp_cdb[0] = INQUIRY;
569 if (eata_pio_send_command((uint) base, EATA_CMD_PIO_SEND_CP))
571 while (!(inb(base + HA_RSTATUS) & HA_SDRQ));
572 outsw(base + HA_RDATA, &cp, cplen);
573 outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND);
574 for (z = 0; z < cppadlen; z++)
575 outw(0, base + HA_RDATA);
577 while (inb(base + HA_RSTATUS) & HA_SBUSY);
578 if (inb(base + HA_RSTATUS) & HA_SERROR)
580 else if (!(inb(base + HA_RSTATUS) & HA_SDRQ))
583 insw(base + HA_RDATA, &buff, 127);
584 while (inb(base + HA_RSTATUS) & HA_SDRQ)
585 inw(base + HA_RDATA);
590 static int get_pio_conf_PIO(u32 base, struct get_conf *buf)
592 unsigned long loop = HZ / 2;
596 if (check_region(base, 9))
599 memset(buf, 0, sizeof(struct get_conf));
601 while (inb(base + HA_RSTATUS) & HA_SBUSY)
605 DBG(DBG_PIO && DBG_PROBE, printk(KERN_DEBUG "Issuing PIO READ CONFIG to HBA at %#x\n", base));
606 eata_pio_send_command(base, EATA_CMD_PIO_READ_CONFIG);
609 for (p = (unsigned short *) buf; (long) p <= ((long) buf + (sizeof(struct get_conf) / 2)); p++) {
610 while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
615 *p = inw(base + HA_RDATA);
617 if (!(inb(base + HA_RSTATUS) & HA_SERROR)) { /* Error ? */
618 if (htonl(EATA_SIGNATURE) == buf->signature) {
619 DBG(DBG_PIO && DBG_PROBE, printk(KERN_NOTICE "EATA Controller found " "at %#4x EATA Level: %x\n", base, (uint) (buf->version)));
621 while (inb(base + HA_RSTATUS) & HA_SDRQ)
622 inw(base + HA_RDATA);
623 if (ALLOW_DMA_BOARDS == FALSE) {
624 for (z = 0; z < MAXISA; z++)
625 if (base == ISAbases[z]) {
626 buf->IRQ = ISAirqs[z];
633 DBG(DBG_PROBE, printk("eata_dma: get_conf_PIO, error during transfer " "for HBA at %x\n", base));
638 static void print_pio_config(struct get_conf *gc)
640 printk("Please check values: (read config data)\n");
641 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);
642 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);
643 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);
646 static uint print_selftest(uint base)
648 unsigned char buffer[512];
653 printk("eata_pio: executing controller self test & setup...\n");
654 while (inb(base + HA_RSTATUS) & HA_SBUSY);
655 outb(EATA_CMD_PIO_SETUPTEST, base + HA_WCOMMAND);
657 while (inb(base + HA_RSTATUS) & HA_SBUSY)
659 if (inb(base + HA_RSTATUS) & HA_SDRQ) {
660 insw(base + HA_RDATA, &buffer, 256);
662 /* no beeps please... */
663 for (z = 0; z < 511 && buffer[z]; z++)
665 printk("%c", buffer[z]);
668 } while (inb(base + HA_RSTATUS) & (HA_SBUSY | HA_SDRQ));
670 return (!(inb(base + HA_RSTATUS) & HA_SERROR));
673 static int register_pio_HBA(long base, struct get_conf *gc, Scsi_Host_Template * tpnt)
675 unsigned long size = 0;
678 unsigned short cppadlen;
679 struct Scsi_Host *sh;
682 DBG(DBG_REGISTER, print_pio_config(gc));
684 if (gc->DMA_support == TRUE) {
685 printk("HBA at %#.4lx supports DMA. Please use EATA-DMA driver.\n", base);
686 if (ALLOW_DMA_BOARDS == FALSE)
690 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) {
691 printk("HBA at %#lx didn't react on INQUIRY. Sorry.\n", (unsigned long) base);
695 if (print_selftest(base) == FALSE && ALLOW_DMA_BOARDS == FALSE) {
696 printk("HBA at %#lx failed while performing self test & setup.\n", (unsigned long) base);
700 request_region(base, 8, "eata_pio");
702 size = sizeof(hostdata) + (sizeof(struct eata_ccb) * ntohs(gc->queuesiz));
704 sh = scsi_register(tpnt, size);
706 release_region(base, 8);
710 if (!reg_IRQ[gc->IRQ]) { /* Interrupt already registered ? */
711 if (!request_irq(gc->IRQ, do_eata_pio_int_handler, SA_INTERRUPT, "EATA-PIO", sh)) {
714 reg_IRQL[gc->IRQ] = TRUE; /* IRQ is edge triggered */
716 printk("Couldn't allocate IRQ %d, Sorry.\n", gc->IRQ);
717 release_region(base, 8);
720 } else { /* More than one HBA on this IRQ */
721 if (reg_IRQL[gc->IRQ] == TRUE) {
722 printk("Can't support more than one HBA on this IRQ,\n" " if the IRQ is edge triggered. Sorry.\n");
723 release_region(base, 8);
731 memset(hd->ccb, 0, (sizeof(struct eata_ccb) * ntohs(gc->queuesiz)));
732 memset(hd->reads, 0, sizeof(unsigned long) * 26);
734 strlcpy(SD(sh)->vendor, &buff[8], sizeof(SD(sh)->vendor));
735 strlcpy(SD(sh)->name, &buff[16], sizeof(SD(sh)->name));
736 SD(sh)->revision[0] = buff[32];
737 SD(sh)->revision[1] = buff[33];
738 SD(sh)->revision[2] = buff[34];
739 SD(sh)->revision[3] = '.';
740 SD(sh)->revision[4] = buff[35];
741 SD(sh)->revision[5] = 0;
743 switch (ntohl(gc->len)) {
745 SD(sh)->EATA_revision = 'a';
748 SD(sh)->EATA_revision = 'b';
751 SD(sh)->EATA_revision = 'c';
754 SD(sh)->EATA_revision = 'z';
756 SD(sh)->EATA_revision = '?';
759 if (ntohl(gc->len) >= 0x22) {
760 if (gc->is_PCI == TRUE)
761 hd->bustype = IS_PCI;
762 else if (gc->is_EISA == TRUE)
763 hd->bustype = IS_EISA;
765 hd->bustype = IS_ISA;
768 hd->bustype = IS_PCI;
769 else if (buff[21] == '2')
770 hd->bustype = IS_EISA;
772 hd->bustype = IS_ISA;
775 SD(sh)->cplen = cplen;
776 SD(sh)->cppadlen = cppadlen;
777 SD(sh)->hostid = gc->scsi_id[3];
778 SD(sh)->devflags = 1 << gc->scsi_id[3];
779 SD(sh)->moresupport = gc->MORE_support;
780 sh->unique_id = base;
785 sh->dma_channel = PIO;
786 sh->this_id = gc->scsi_id[3];
789 sh->sg_tablesize = SG_ALL;
801 sh->unchecked_isa_dma = FALSE; /* We can only do PIO */
803 hd->next = NULL; /* build a linked list of all HBAs */
805 if (hd->prev != NULL)
806 SD(hd->prev)->next = sh;
808 if (first_HBA == NULL)
814 static void find_pio_ISA(struct get_conf *buf, Scsi_Host_Template * tpnt)
818 for (i = 0; i < MAXISA; i++) {
820 if (get_pio_conf_PIO(ISAbases[i], buf) == TRUE) {
821 register_pio_HBA(ISAbases[i], buf, tpnt);
829 static void find_pio_EISA(struct get_conf *buf, Scsi_Host_Template * tpnt)
838 for (i = 0; i < MAXEISA; i++) {
839 if (EISAbases[i] == TRUE) { /* Still a possibility ? */
841 base = 0x1c88 + (i * 0x1000);
843 pal1 = inb((u16) base - 8);
844 pal2 = inb((u16) base - 7);
845 pal3 = inb((u16) base - 6);
847 if (((pal1 == 0x12) && (pal2 == 0x14)) || ((pal1 == 0x38) && (pal2 == 0xa3) && (pal3 == 0x82)) || ((pal1 == 0x06) && (pal2 == 0x94) && (pal3 == 0x24))) {
848 DBG(DBG_PROBE, printk(KERN_NOTICE "EISA EATA id tags found: " "%x %x %x \n", (int) pal1, (int) pal2, (int) pal3));
850 if (get_pio_conf_PIO(base, buf) == TRUE) {
851 DBG(DBG_PROBE && DBG_EISA, print_pio_config(buf));
853 register_pio_HBA(base, buf, tpnt);
855 printk(KERN_NOTICE "eata_dma: No valid IRQ. HBA " "removed from list\n");
857 /* Nothing found here so we take it from the list */
867 static void find_pio_PCI(struct get_conf *buf, Scsi_Host_Template * tpnt)
870 printk("eata_dma: kernel PCI support not enabled. Skipping scan for PCI HBAs.\n");
872 struct pci_dev *dev = NULL;
875 while ((dev = pci_find_device(PCI_VENDOR_ID_DPT, PCI_DEVICE_ID_DPT, dev)) != NULL) {
876 DBG(DBG_PROBE && DBG_PCI, printk("eata_pio: find_PCI, HBA at %s\n", pci_name(dev)));
877 if (pci_enable_device(dev))
880 base = pci_resource_flags(dev, 0);
881 if (base & IORESOURCE_MEM) {
882 printk("eata_pio: invalid base address of device %s\n", pci_name(dev));
885 base = pci_resource_start(dev, 0);
886 /* EISA tag there ? */
887 if ((inb(base) == 0x12) && (inb(base + 1) == 0x14))
888 continue; /* Jep, it's forced, so move on */
889 base += 0x10; /* Now, THIS is the real address */
891 /* We didn't find it in the primary search */
892 if (get_pio_conf_PIO(base, buf) == TRUE) {
893 if (buf->FORCADR) /* If the address is forced */
894 continue; /* we'll find it later */
896 /* OK. We made it till here, so we can go now
897 * and register it. We only have to check and
898 * eventually remove it from the EISA and ISA list
901 register_pio_HBA(base, buf, tpnt);
904 for (x = 0; x < MAXISA; ++x) {
905 if (ISAbases[x] == base) {
910 } else if ((base & 0x0fff) == 0x0c88) {
911 x = (base >> 12) & 0x0f;
916 else if (check_blink_state(base) == TRUE) {
917 printk("eata_pio: HBA is in BLINK state.\n" "Consult your HBAs manual to correct this.\n");
922 #endif /* #ifndef CONFIG_PCI */
926 static int eata_pio_detect(Scsi_Host_Template * tpnt)
928 struct Scsi_Host *HBA_ptr;
932 tpnt->proc_name = "eata_pio";
934 find_pio_PCI(&gc, tpnt);
936 find_pio_EISA(&gc, tpnt);
938 find_pio_ISA(&gc, tpnt);
940 for (i = 0; i <= MAXIRQ; i++)
942 request_irq(i, do_eata_pio_int_handler, SA_INTERRUPT, "EATA-PIO", NULL);
946 if (registered_HBAs != 0) {
947 printk("EATA (Extended Attachment) PIO driver version: %d.%d%s\n"
948 "(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);
950 printk("Registered HBAs:\n");
951 printk("HBA no. Boardtype: Revis: EATA: Bus: BaseIO: IRQ: Ch: ID: Pr:" " QS: SG: CPL:\n");
952 for (i = 1; i <= registered_HBAs; i++) {
953 printk("scsi%-2d: %.10s v%s 2.0%c %s %#.4x %2d %d %d %c"
955 HBA_ptr->host_no, SD(HBA_ptr)->name, SD(HBA_ptr)->revision,
956 SD(HBA_ptr)->EATA_revision, (SD(HBA_ptr)->bustype == 'P') ?
957 "PCI " : (SD(HBA_ptr)->bustype == 'E') ? "EISA" : "ISA ",
958 (uint) HBA_ptr->base, HBA_ptr->irq, SD(HBA_ptr)->channel, HBA_ptr->this_id, (SD(HBA_ptr)->primary == TRUE) ? 'Y' : 'N', HBA_ptr->can_queue, HBA_ptr->sg_tablesize, HBA_ptr->cmd_per_lun);
959 HBA_ptr = SD(HBA_ptr)->next;
962 return (registered_HBAs);
965 static Scsi_Host_Template driver_template = {
966 .proc_info = eata_pio_proc_info,
967 .name = "EATA (Extended Attachment) PIO driver",
968 .detect = eata_pio_detect,
969 .release = eata_pio_release,
970 .queuecommand = eata_pio_queue,
971 .eh_abort_handler = eata_pio_abort,
972 .eh_host_reset_handler = eata_pio_host_reset,
973 .use_clustering = ENABLE_CLUSTERING,
976 MODULE_AUTHOR("Michael Neuffer, Alfred Arnold");
977 MODULE_DESCRIPTION("EATA SCSI PIO driver");
978 MODULE_LICENSE("GPL");
980 #include "scsi_module.c"