[SUNLANCE]: Mark sparc_lance_probe_one as __devinit.
[linux-2.6/verdex.git] / drivers / scsi / eata_pio.c
blobd312633db92beba41e1808e36e3b3cab2620147a
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@redhat.com> for Linux *
18 * 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 ************************************************************/
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>
55 #include <linux/in.h>
56 #include <linux/pci.h>
57 #include <linux/proc_fs.h>
58 #include <linux/interrupt.h>
59 #include <linux/blkdev.h>
60 #include <linux/spinlock.h>
61 #include <linux/delay.h>
63 #include <asm/io.h>
65 #include <scsi/scsi.h>
66 #include <scsi/scsi_cmnd.h>
67 #include <scsi/scsi_device.h>
68 #include <scsi/scsi_host.h>
70 #include "eata_generic.h"
71 #include "eata_pio.h"
74 static unsigned int ISAbases[MAXISA] = {
75 0x1F0, 0x170, 0x330, 0x230
78 static unsigned int ISAirqs[MAXISA] = {
79 14, 12, 15, 11
82 static unsigned char EISAbases[] = {
83 1, 1, 1, 1, 1, 1, 1, 1,
84 1, 1, 1, 1, 1, 1, 1, 1
87 static unsigned int registered_HBAs;
88 static struct Scsi_Host *last_HBA;
89 static struct Scsi_Host *first_HBA;
90 static unsigned char reg_IRQ[16];
91 static unsigned char reg_IRQL[16];
92 static unsigned long int_counter;
93 static unsigned long queue_counter;
95 static struct scsi_host_template driver_template;
98 * eata_proc_info
99 * inout : decides on the direction of the dataflow and the meaning of the
100 * variables
101 * buffer: If inout==FALSE data is being written to it else read from it
102 * *start: If inout==FALSE start of the valid data in the buffer
103 * offset: If inout==FALSE offset from the beginning of the imaginary file
104 * from which we start writing into the buffer
105 * length: If inout==FALSE max number of bytes to be written into the buffer
106 * else number of bytes in the buffer
108 static int eata_pio_proc_info(struct Scsi_Host *shost, char *buffer, char **start, off_t offset,
109 int length, int rw)
111 static u8 buff[512];
112 int size, len = 0;
113 off_t begin = 0, pos = 0;
115 if (rw)
116 return -ENOSYS;
117 if (offset == 0)
118 memset(buff, 0, sizeof(buff));
120 size = sprintf(buffer+len, "EATA (Extended Attachment) PIO driver version: "
121 "%d.%d%s\n",VER_MAJOR, VER_MINOR, VER_SUB);
122 len += size; pos = begin + len;
123 size = sprintf(buffer + len, "queued commands: %10ld\n"
124 "processed interrupts:%10ld\n", queue_counter, int_counter);
125 len += size; pos = begin + len;
127 size = sprintf(buffer + len, "\nscsi%-2d: HBA %.10s\n",
128 shost->host_no, SD(shost)->name);
129 len += size;
130 pos = begin + len;
131 size = sprintf(buffer + len, "Firmware revision: v%s\n",
132 SD(shost)->revision);
133 len += size;
134 pos = begin + len;
135 size = sprintf(buffer + len, "IO: PIO\n");
136 len += size;
137 pos = begin + len;
138 size = sprintf(buffer + len, "Base IO : %#.4x\n", (u32) shost->base);
139 len += size;
140 pos = begin + len;
141 size = sprintf(buffer + len, "Host Bus: %s\n",
142 (SD(shost)->bustype == 'P')?"PCI ":
143 (SD(shost)->bustype == 'E')?"EISA":"ISA ");
145 len += size;
146 pos = begin + len;
148 if (pos < offset) {
149 len = 0;
150 begin = pos;
152 if (pos > offset + length)
153 goto stop_output;
155 stop_output:
156 DBG(DBG_PROC, printk("2pos: %ld offset: %ld len: %d\n", pos, offset, len));
157 *start=buffer+(offset-begin); /* Start of wanted data */
158 len-=(offset-begin); /* Start slop */
159 if(len>length)
160 len = length; /* Ending slop */
161 DBG(DBG_PROC, printk("3pos: %ld offset: %ld len: %d\n", pos, offset, len));
163 return (len);
166 static int eata_pio_release(struct Scsi_Host *sh)
168 hostdata *hd = SD(sh);
169 if (sh->irq && reg_IRQ[sh->irq] == 1)
170 free_irq(sh->irq, NULL);
171 else
172 reg_IRQ[sh->irq]--;
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);
177 /* At this point the PCI reference can go */
178 if (hd->pdev)
179 pci_dev_put(hd->pdev);
180 return 1;
183 static void IncStat(struct scsi_pointer *SCp, unsigned int Increment)
185 SCp->ptr += Increment;
186 if ((SCp->this_residual -= Increment) == 0) {
187 if ((--SCp->buffers_residual) == 0)
188 SCp->Status = 0;
189 else {
190 SCp->buffer++;
191 SCp->ptr = page_address(SCp->buffer->page) + SCp->buffer->offset;
192 SCp->this_residual = SCp->buffer->length;
197 static irqreturn_t eata_pio_int_handler(int irq, void *dev_id, struct pt_regs *regs);
199 static irqreturn_t do_eata_pio_int_handler(int irq, void *dev_id,
200 struct pt_regs *regs)
202 unsigned long flags;
203 struct Scsi_Host *dev = dev_id;
204 irqreturn_t ret;
206 spin_lock_irqsave(dev->host_lock, flags);
207 ret = eata_pio_int_handler(irq, dev_id, regs);
208 spin_unlock_irqrestore(dev->host_lock, flags);
209 return ret;
212 static irqreturn_t eata_pio_int_handler(int irq, void *dev_id, struct pt_regs *regs)
214 unsigned int eata_stat = 0xfffff;
215 struct scsi_cmnd *cmd;
216 hostdata *hd;
217 struct eata_ccb *cp;
218 unsigned long base;
219 unsigned int x, z;
220 struct Scsi_Host *sh;
221 unsigned short zwickel = 0;
222 unsigned char stat, odd;
223 irqreturn_t ret = IRQ_NONE;
225 for (x = 1, sh = first_HBA; x <= registered_HBAs; x++, sh = SD(sh)->prev)
227 if (sh->irq != irq)
228 continue;
229 if (inb(sh->base + HA_RSTATUS) & HA_SBUSY)
230 continue;
232 int_counter++;
233 ret = IRQ_HANDLED;
235 hd = SD(sh);
237 cp = &hd->ccb[0];
238 cmd = cp->cmd;
239 base = cmd->device->host->base;
241 do {
242 stat = inb(base + HA_RSTATUS);
243 if (stat & HA_SDRQ) {
244 if (cp->DataIn) {
245 z = 256;
246 odd = 0;
247 while ((cmd->SCp.Status) && ((z > 0) || (odd))) {
248 if (odd) {
249 *(cmd->SCp.ptr) = zwickel >> 8;
250 IncStat(&cmd->SCp, 1);
251 odd = 0;
253 x = min_t(unsigned int, z, cmd->SCp.this_residual / 2);
254 insw(base + HA_RDATA, cmd->SCp.ptr, x);
255 z -= x;
256 IncStat(&cmd->SCp, 2 * x);
257 if ((z > 0) && (cmd->SCp.this_residual == 1)) {
258 zwickel = inw(base + HA_RDATA);
259 *(cmd->SCp.ptr) = zwickel & 0xff;
260 IncStat(&cmd->SCp, 1);
261 z--;
262 odd = 1;
265 while (z > 0) {
266 zwickel = inw(base + HA_RDATA);
267 z--;
269 } else { /* cp->DataOut */
271 odd = 0;
272 z = 256;
273 while ((cmd->SCp.Status) && ((z > 0) || (odd))) {
274 if (odd) {
275 zwickel += *(cmd->SCp.ptr) << 8;
276 IncStat(&cmd->SCp, 1);
277 outw(zwickel, base + HA_RDATA);
278 z--;
279 odd = 0;
281 x = min_t(unsigned int, z, cmd->SCp.this_residual / 2);
282 outsw(base + HA_RDATA, cmd->SCp.ptr, x);
283 z -= x;
284 IncStat(&cmd->SCp, 2 * x);
285 if ((z > 0) && (cmd->SCp.this_residual == 1)) {
286 zwickel = *(cmd->SCp.ptr);
287 zwickel &= 0xff;
288 IncStat(&cmd->SCp, 1);
289 odd = 1;
292 while (z > 0 || odd) {
293 outw(zwickel, base + HA_RDATA);
294 z--;
295 odd = 0;
300 while ((stat & HA_SDRQ) || ((stat & HA_SMORE) && hd->moresupport));
302 /* terminate handler if HBA goes busy again, i.e. transfers
303 * more data */
305 if (stat & HA_SBUSY)
306 break;
308 /* OK, this is quite stupid, but I haven't found any correct
309 * way to get HBA&SCSI status so far */
311 if (!(inb(base + HA_RSTATUS) & HA_SERROR)) {
312 cmd->result = (DID_OK << 16);
313 hd->devflags |= (1 << cp->cp_id);
314 } else if (hd->devflags & (1 << cp->cp_id))
315 cmd->result = (DID_OK << 16) + 0x02;
316 else
317 cmd->result = (DID_NO_CONNECT << 16);
319 if (cp->status == LOCKED) {
320 cp->status = FREE;
321 eata_stat = inb(base + HA_RSTATUS);
322 printk(KERN_CRIT "eata_pio: int_handler, freeing locked " "queueslot\n");
323 return ret;
325 #if DBG_INTR2
326 if (stat != 0x50)
327 printk(KERN_DEBUG "stat: %#.2x, result: %#.8x\n", stat, cmd->result);
328 #endif
330 cp->status = FREE; /* now we can release the slot */
332 cmd->scsi_done(cmd);
335 return ret;
338 static inline unsigned int eata_pio_send_command(unsigned long base, unsigned char command)
340 unsigned int loop = 50;
342 while (inb(base + HA_RSTATUS) & HA_SBUSY)
343 if (--loop == 0)
344 return 1;
346 /* Enable interrupts for HBA. It is not the best way to do it at this
347 * place, but I hope that it doesn't interfere with the IDE driver
348 * initialization this way */
350 outb(HA_CTRL_8HEADS, base + HA_CTRLREG);
352 outb(command, base + HA_WCOMMAND);
353 return 0;
356 static int eata_pio_queue(struct scsi_cmnd *cmd,
357 void (*done)(struct scsi_cmnd *))
359 unsigned int x, y;
360 unsigned long base;
362 hostdata *hd;
363 struct Scsi_Host *sh;
364 struct eata_ccb *cp;
366 queue_counter++;
368 hd = HD(cmd);
369 sh = cmd->device->host;
370 base = sh->base;
372 /* use only slot 0, as 2001 can handle only one cmd at a time */
374 y = x = 0;
376 if (hd->ccb[y].status != FREE) {
378 DBG(DBG_QUEUE, printk(KERN_EMERG "can_queue %d, x %d, y %d\n", sh->can_queue, x, y));
379 #if DEBUG_EATA
380 panic(KERN_EMERG "eata_pio: run out of queue slots cmdno:%ld " "intrno: %ld\n", queue_counter, int_counter);
381 #else
382 panic(KERN_EMERG "eata_pio: run out of queue slots....\n");
383 #endif
386 cp = &hd->ccb[y];
388 memset(cp, 0, sizeof(struct eata_ccb));
389 memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
391 cp->status = USED; /* claim free slot */
393 DBG(DBG_QUEUE, scmd_printk(KERN_DEBUG, cmd,
394 "eata_pio_queue pid %ld, y %d\n",
395 cmd->pid, y));
397 cmd->scsi_done = (void *) done;
399 if (cmd->sc_data_direction == DMA_TO_DEVICE)
400 cp->DataOut = 1; /* Output mode */
401 else
402 cp->DataIn = 0; /* Input mode */
404 cp->Interpret = (cmd->device->id == hd->hostid);
405 cp->cp_datalen = cpu_to_be32(cmd->request_bufflen);
406 cp->Auto_Req_Sen = 0;
407 cp->cp_reqDMA = 0;
408 cp->reqlen = 0;
410 cp->cp_id = cmd->device->id;
411 cp->cp_lun = cmd->device->lun;
412 cp->cp_dispri = 0;
413 cp->cp_identify = 1;
414 memcpy(cp->cp_cdb, cmd->cmnd, COMMAND_SIZE(*cmd->cmnd));
416 cp->cp_statDMA = 0;
418 cp->cp_viraddr = cp;
419 cp->cmd = cmd;
420 cmd->host_scribble = (char *) &hd->ccb[y];
422 if (cmd->use_sg == 0) {
423 cmd->SCp.buffers_residual = 1;
424 cmd->SCp.ptr = cmd->request_buffer;
425 cmd->SCp.this_residual = cmd->request_bufflen;
426 cmd->SCp.buffer = NULL;
427 } else {
428 cmd->SCp.buffer = cmd->request_buffer;
429 cmd->SCp.buffers_residual = cmd->use_sg;
430 cmd->SCp.ptr = page_address(cmd->SCp.buffer->page) + cmd->SCp.buffer->offset;
431 cmd->SCp.this_residual = cmd->SCp.buffer->length;
433 cmd->SCp.Status = (cmd->SCp.this_residual != 0); /* TRUE as long as bytes
434 * are to transfer */
436 if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP)) {
437 cmd->result = DID_BUS_BUSY << 16;
438 scmd_printk(KERN_NOTICE, cmd,
439 "eata_pio_queue pid %ld, HBA busy, "
440 "returning DID_BUS_BUSY, done.\n", cmd->pid);
441 done(cmd);
442 cp->status = FREE;
443 return (0);
445 /* FIXME: timeout */
446 while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
447 cpu_relax();
448 outsw(base + HA_RDATA, cp, hd->cplen);
449 outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND);
450 for (x = 0; x < hd->cppadlen; x++)
451 outw(0, base + HA_RDATA);
453 DBG(DBG_QUEUE, scmd_printk(KERN_DEBUG, cmd,
454 "Queued base %#.4lx pid: %ld "
455 "slot %d irq %d\n", sh->base, cmd->pid, y, sh->irq));
457 return (0);
460 static int eata_pio_abort(struct scsi_cmnd *cmd)
462 unsigned int loop = 100;
464 DBG(DBG_ABNORM, scmd_printk(KERN_WARNING, cmd,
465 "eata_pio_abort called pid: %ld\n",
466 cmd->pid));
468 while (inb(cmd->device->host->base + HA_RAUXSTAT) & HA_ABUSY)
469 if (--loop == 0) {
470 printk(KERN_WARNING "eata_pio: abort, timeout error.\n");
471 return FAILED;
473 if (CD(cmd)->status == FREE) {
474 DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_NOT_RUNNING\n"));
475 return FAILED;
477 if (CD(cmd)->status == USED) {
478 DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_BUSY\n"));
479 /* We want to sleep a bit more here */
480 return FAILED; /* SNOOZE */
482 if (CD(cmd)->status == RESET) {
483 printk(KERN_WARNING "eata_pio: abort, command reset error.\n");
484 return FAILED;
486 if (CD(cmd)->status == LOCKED) {
487 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio: abort, queue slot " "locked.\n"));
488 return FAILED;
490 panic("eata_pio: abort: invalid slot status\n");
493 static int eata_pio_host_reset(struct scsi_cmnd *cmd)
495 unsigned int x, limit = 0;
496 unsigned char success = 0;
497 struct scsi_cmnd *sp;
498 struct Scsi_Host *host = cmd->device->host;
500 DBG(DBG_ABNORM, scmd_printk(KERN_WARNING, cmd,
501 "eata_pio_reset called pid:%ld\n",
502 cmd->pid));
504 spin_lock_irq(host->host_lock);
506 if (HD(cmd)->state == RESET) {
507 printk(KERN_WARNING "eata_pio_reset: exit, already in reset.\n");
508 spin_unlock_irq(host->host_lock);
509 return FAILED;
512 /* force all slots to be free */
514 for (x = 0; x < cmd->device->host->can_queue; x++) {
516 if (HD(cmd)->ccb[x].status == FREE)
517 continue;
519 sp = HD(cmd)->ccb[x].cmd;
520 HD(cmd)->ccb[x].status = RESET;
521 printk(KERN_WARNING "eata_pio_reset: slot %d in reset, pid %ld.\n", x, sp->pid);
523 if (sp == NULL)
524 panic("eata_pio_reset: slot %d, sp==NULL.\n", x);
527 /* hard reset the HBA */
528 outb(EATA_CMD_RESET, cmd->device->host->base + HA_WCOMMAND);
530 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: board reset done.\n"));
531 HD(cmd)->state = RESET;
533 spin_unlock_irq(host->host_lock);
534 msleep(3000);
535 spin_lock_irq(host->host_lock);
537 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: interrupts disabled, " "loops %d.\n", limit));
539 for (x = 0; x < cmd->device->host->can_queue; x++) {
541 /* Skip slots already set free by interrupt */
542 if (HD(cmd)->ccb[x].status != RESET)
543 continue;
545 sp = HD(cmd)->ccb[x].cmd;
546 sp->result = DID_RESET << 16;
548 /* This mailbox is terminated */
549 printk(KERN_WARNING "eata_pio_reset: reset ccb %d.\n", x);
550 HD(cmd)->ccb[x].status = FREE;
552 sp->scsi_done(sp);
555 HD(cmd)->state = 0;
557 spin_unlock_irq(host->host_lock);
559 if (success) { /* hmmm... */
560 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, success.\n"));
561 return SUCCESS;
562 } else {
563 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, wakeup.\n"));
564 return FAILED;
568 static char *get_pio_board_data(unsigned long base, unsigned int irq, unsigned int id, unsigned long cplen, unsigned short cppadlen)
570 struct eata_ccb cp;
571 static char buff[256];
572 int z;
574 memset(&cp, 0, sizeof(struct eata_ccb));
575 memset(buff, 0, sizeof(buff));
577 cp.DataIn = 1;
578 cp.Interpret = 1; /* Interpret command */
580 cp.cp_datalen = cpu_to_be32(254);
581 cp.cp_dataDMA = cpu_to_be32(0);
583 cp.cp_id = id;
584 cp.cp_lun = 0;
586 cp.cp_cdb[0] = INQUIRY;
587 cp.cp_cdb[1] = 0;
588 cp.cp_cdb[2] = 0;
589 cp.cp_cdb[3] = 0;
590 cp.cp_cdb[4] = 254;
591 cp.cp_cdb[5] = 0;
593 if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP))
594 return (NULL);
595 while (!(inb(base + HA_RSTATUS) & HA_SDRQ));
596 outsw(base + HA_RDATA, &cp, cplen);
597 outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND);
598 for (z = 0; z < cppadlen; z++)
599 outw(0, base + HA_RDATA);
601 while (inb(base + HA_RSTATUS) & HA_SBUSY);
602 if (inb(base + HA_RSTATUS) & HA_SERROR)
603 return (NULL);
604 else if (!(inb(base + HA_RSTATUS) & HA_SDRQ))
605 return (NULL);
606 else {
607 insw(base + HA_RDATA, &buff, 127);
608 while (inb(base + HA_RSTATUS) & HA_SDRQ)
609 inw(base + HA_RDATA);
610 return (buff);
614 static int get_pio_conf_PIO(unsigned long base, struct get_conf *buf)
616 unsigned long loop = HZ / 2;
617 int z;
618 unsigned short *p;
620 if (!request_region(base, 9, "eata_pio"))
621 return 0;
623 memset(buf, 0, sizeof(struct get_conf));
625 while (inb(base + HA_RSTATUS) & HA_SBUSY)
626 if (--loop == 0)
627 goto fail;
629 DBG(DBG_PIO && DBG_PROBE, printk(KERN_DEBUG "Issuing PIO READ CONFIG to HBA at %#lx\n", base));
630 eata_pio_send_command(base, EATA_CMD_PIO_READ_CONFIG);
632 loop = 50;
633 for (p = (unsigned short *) buf; (long) p <= ((long) buf + (sizeof(struct get_conf) / 2)); p++) {
634 while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
635 if (--loop == 0)
636 goto fail;
638 loop = 50;
639 *p = inw(base + HA_RDATA);
641 if (inb(base + HA_RSTATUS) & HA_SERROR) {
642 DBG(DBG_PROBE, printk("eata_dma: get_conf_PIO, error during "
643 "transfer for HBA at %lx\n", base));
644 goto fail;
647 if (cpu_to_be32(EATA_SIGNATURE) != buf->signature)
648 goto fail;
650 DBG(DBG_PIO && DBG_PROBE, printk(KERN_NOTICE "EATA Controller found "
651 "at %#4lx EATA Level: %x\n",
652 base, (unsigned int) (buf->version)));
654 while (inb(base + HA_RSTATUS) & HA_SDRQ)
655 inw(base + HA_RDATA);
657 if (!ALLOW_DMA_BOARDS) {
658 for (z = 0; z < MAXISA; z++)
659 if (base == ISAbases[z]) {
660 buf->IRQ = ISAirqs[z];
661 break;
665 return 1;
667 fail:
668 release_region(base, 9);
669 return 0;
672 static void print_pio_config(struct get_conf *gc)
674 printk("Please check values: (read config data)\n");
675 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);
676 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);
677 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);
680 static unsigned int print_selftest(unsigned int base)
682 unsigned char buffer[512];
683 #ifdef VERBOSE_SETUP
684 int z;
685 #endif
687 printk("eata_pio: executing controller self test & setup...\n");
688 while (inb(base + HA_RSTATUS) & HA_SBUSY);
689 outb(EATA_CMD_PIO_SETUPTEST, base + HA_WCOMMAND);
690 do {
691 while (inb(base + HA_RSTATUS) & HA_SBUSY)
692 /* nothing */ ;
693 if (inb(base + HA_RSTATUS) & HA_SDRQ) {
694 insw(base + HA_RDATA, &buffer, 256);
695 #ifdef VERBOSE_SETUP
696 /* no beeps please... */
697 for (z = 0; z < 511 && buffer[z]; z++)
698 if (buffer[z] != 7)
699 printk("%c", buffer[z]);
700 #endif
702 } while (inb(base + HA_RSTATUS) & (HA_SBUSY | HA_SDRQ));
704 return (!(inb(base + HA_RSTATUS) & HA_SERROR));
707 static int register_pio_HBA(long base, struct get_conf *gc, struct pci_dev *pdev)
709 unsigned long size = 0;
710 char *buff;
711 unsigned long cplen;
712 unsigned short cppadlen;
713 struct Scsi_Host *sh;
714 hostdata *hd;
716 DBG(DBG_REGISTER, print_pio_config(gc));
718 if (gc->DMA_support) {
719 printk("HBA at %#.4lx supports DMA. Please use EATA-DMA driver.\n", base);
720 if (!ALLOW_DMA_BOARDS)
721 return 0;
724 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) {
725 printk("HBA at %#lx didn't react on INQUIRY. Sorry.\n", base);
726 return 0;
729 if (!print_selftest(base) && !ALLOW_DMA_BOARDS) {
730 printk("HBA at %#lx failed while performing self test & setup.\n", base);
731 return 0;
734 size = sizeof(hostdata) + (sizeof(struct eata_ccb) * be16_to_cpu(gc->queuesiz));
736 sh = scsi_register(&driver_template, size);
737 if (sh == NULL)
738 return 0;
740 if (!reg_IRQ[gc->IRQ]) { /* Interrupt already registered ? */
741 if (!request_irq(gc->IRQ, do_eata_pio_int_handler, IRQF_DISABLED, "EATA-PIO", sh)) {
742 reg_IRQ[gc->IRQ]++;
743 if (!gc->IRQ_TR)
744 reg_IRQL[gc->IRQ] = 1; /* IRQ is edge triggered */
745 } else {
746 printk("Couldn't allocate IRQ %d, Sorry.\n", gc->IRQ);
747 return 0;
749 } else { /* More than one HBA on this IRQ */
750 if (reg_IRQL[gc->IRQ]) {
751 printk("Can't support more than one HBA on this IRQ,\n" " if the IRQ is edge triggered. Sorry.\n");
752 return 0;
753 } else
754 reg_IRQ[gc->IRQ]++;
757 hd = SD(sh);
759 memset(hd->ccb, 0, (sizeof(struct eata_ccb) * be16_to_cpu(gc->queuesiz)));
760 memset(hd->reads, 0, sizeof(hd->reads));
762 strlcpy(SD(sh)->vendor, &buff[8], sizeof(SD(sh)->vendor));
763 strlcpy(SD(sh)->name, &buff[16], sizeof(SD(sh)->name));
764 SD(sh)->revision[0] = buff[32];
765 SD(sh)->revision[1] = buff[33];
766 SD(sh)->revision[2] = buff[34];
767 SD(sh)->revision[3] = '.';
768 SD(sh)->revision[4] = buff[35];
769 SD(sh)->revision[5] = 0;
771 switch (be32_to_cpu(gc->len)) {
772 case 0x1c:
773 SD(sh)->EATA_revision = 'a';
774 break;
775 case 0x1e:
776 SD(sh)->EATA_revision = 'b';
777 break;
778 case 0x22:
779 SD(sh)->EATA_revision = 'c';
780 break;
781 case 0x24:
782 SD(sh)->EATA_revision = 'z';
783 default:
784 SD(sh)->EATA_revision = '?';
787 if (be32_to_cpu(gc->len) >= 0x22) {
788 if (gc->is_PCI)
789 hd->bustype = IS_PCI;
790 else if (gc->is_EISA)
791 hd->bustype = IS_EISA;
792 else
793 hd->bustype = IS_ISA;
794 } else {
795 if (buff[21] == '4')
796 hd->bustype = IS_PCI;
797 else if (buff[21] == '2')
798 hd->bustype = IS_EISA;
799 else
800 hd->bustype = IS_ISA;
803 SD(sh)->cplen = cplen;
804 SD(sh)->cppadlen = cppadlen;
805 SD(sh)->hostid = gc->scsi_id[3];
806 SD(sh)->devflags = 1 << gc->scsi_id[3];
807 SD(sh)->moresupport = gc->MORE_support;
808 sh->unique_id = base;
809 sh->base = base;
810 sh->io_port = base;
811 sh->n_io_port = 9;
812 sh->irq = gc->IRQ;
813 sh->dma_channel = PIO;
814 sh->this_id = gc->scsi_id[3];
815 sh->can_queue = 1;
816 sh->cmd_per_lun = 1;
817 sh->sg_tablesize = SG_ALL;
819 hd->channel = 0;
821 hd->pdev = pci_dev_get(pdev); /* Keep a PCI reference */
823 sh->max_id = 8;
824 sh->max_lun = 8;
826 if (gc->SECOND)
827 hd->primary = 0;
828 else
829 hd->primary = 1;
831 sh->unchecked_isa_dma = 0; /* We can only do PIO */
833 hd->next = NULL; /* build a linked list of all HBAs */
834 hd->prev = last_HBA;
835 if (hd->prev != NULL)
836 SD(hd->prev)->next = sh;
837 last_HBA = sh;
838 if (first_HBA == NULL)
839 first_HBA = sh;
840 registered_HBAs++;
841 return (1);
844 static void find_pio_ISA(struct get_conf *buf)
846 int i;
848 for (i = 0; i < MAXISA; i++) {
849 if (!ISAbases[i])
850 continue;
851 if (!get_pio_conf_PIO(ISAbases[i], buf))
852 continue;
853 if (!register_pio_HBA(ISAbases[i], buf, NULL))
854 release_region(ISAbases[i], 9);
855 else
856 ISAbases[i] = 0;
858 return;
861 static void find_pio_EISA(struct get_conf *buf)
863 u32 base;
864 int i;
866 #ifdef CHECKPAL
867 u8 pal1, pal2, pal3;
868 #endif
870 for (i = 0; i < MAXEISA; i++) {
871 if (EISAbases[i]) { /* Still a possibility ? */
873 base = 0x1c88 + (i * 0x1000);
874 #ifdef CHECKPAL
875 pal1 = inb((u16) base - 8);
876 pal2 = inb((u16) base - 7);
877 pal3 = inb((u16) base - 6);
879 if (((pal1 == 0x12) && (pal2 == 0x14)) || ((pal1 == 0x38) && (pal2 == 0xa3) && (pal3 == 0x82)) || ((pal1 == 0x06) && (pal2 == 0x94) && (pal3 == 0x24))) {
880 DBG(DBG_PROBE, printk(KERN_NOTICE "EISA EATA id tags found: " "%x %x %x \n", (int) pal1, (int) pal2, (int) pal3));
881 #endif
882 if (get_pio_conf_PIO(base, buf)) {
883 DBG(DBG_PROBE && DBG_EISA, print_pio_config(buf));
884 if (buf->IRQ) {
885 if (!register_pio_HBA(base, buf, NULL))
886 release_region(base, 9);
887 } else {
888 printk(KERN_NOTICE "eata_dma: No valid IRQ. HBA " "removed from list\n");
889 release_region(base, 9);
892 /* Nothing found here so we take it from the list */
893 EISAbases[i] = 0;
894 #ifdef CHECKPAL
896 #endif
899 return;
902 static void find_pio_PCI(struct get_conf *buf)
904 #ifndef CONFIG_PCI
905 printk("eata_dma: kernel PCI support not enabled. Skipping scan for PCI HBAs.\n");
906 #else
907 struct pci_dev *dev = NULL;
908 unsigned long base, x;
910 while ((dev = pci_get_device(PCI_VENDOR_ID_DPT, PCI_DEVICE_ID_DPT, dev)) != NULL) {
911 DBG(DBG_PROBE && DBG_PCI, printk("eata_pio: find_PCI, HBA at %s\n", pci_name(dev)));
912 if (pci_enable_device(dev))
913 continue;
914 pci_set_master(dev);
915 base = pci_resource_flags(dev, 0);
916 if (base & IORESOURCE_MEM) {
917 printk("eata_pio: invalid base address of device %s\n", pci_name(dev));
918 continue;
920 base = pci_resource_start(dev, 0);
921 /* EISA tag there ? */
922 if ((inb(base) == 0x12) && (inb(base + 1) == 0x14))
923 continue; /* Jep, it's forced, so move on */
924 base += 0x10; /* Now, THIS is the real address */
925 if (base != 0x1f8) {
926 /* We didn't find it in the primary search */
927 if (get_pio_conf_PIO(base, buf)) {
928 if (buf->FORCADR) { /* If the address is forced */
929 release_region(base, 9);
930 continue; /* we'll find it later */
933 /* OK. We made it till here, so we can go now
934 * and register it. We only have to check and
935 * eventually remove it from the EISA and ISA list
938 if (!register_pio_HBA(base, buf, dev)) {
939 release_region(base, 9);
940 continue;
943 if (base < 0x1000) {
944 for (x = 0; x < MAXISA; ++x) {
945 if (ISAbases[x] == base) {
946 ISAbases[x] = 0;
947 break;
950 } else if ((base & 0x0fff) == 0x0c88) {
951 x = (base >> 12) & 0x0f;
952 EISAbases[x] = 0;
955 #ifdef CHECK_BLINK
956 else if (check_blink_state(base)) {
957 printk("eata_pio: HBA is in BLINK state.\n" "Consult your HBAs manual to correct this.\n");
959 #endif
962 #endif /* #ifndef CONFIG_PCI */
965 static int eata_pio_detect(struct scsi_host_template *tpnt)
967 struct Scsi_Host *HBA_ptr;
968 struct get_conf gc;
969 int i;
971 find_pio_PCI(&gc);
972 find_pio_EISA(&gc);
973 find_pio_ISA(&gc);
975 for (i = 0; i <= MAXIRQ; i++)
976 if (reg_IRQ[i])
977 request_irq(i, do_eata_pio_int_handler, IRQF_DISABLED, "EATA-PIO", NULL);
979 HBA_ptr = first_HBA;
981 if (registered_HBAs != 0) {
982 printk("EATA (Extended Attachment) PIO driver version: %d.%d%s\n"
983 "(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);
985 printk("Registered HBAs:\n");
986 printk("HBA no. Boardtype: Revis: EATA: Bus: BaseIO: IRQ: Ch: ID: Pr:" " QS: SG: CPL:\n");
987 for (i = 1; i <= registered_HBAs; i++) {
988 printk("scsi%-2d: %.10s v%s 2.0%c %s %#.4lx %2d %d %d %c"
989 " %2d %2d %2d\n",
990 HBA_ptr->host_no, SD(HBA_ptr)->name, SD(HBA_ptr)->revision,
991 SD(HBA_ptr)->EATA_revision, (SD(HBA_ptr)->bustype == 'P') ?
992 "PCI " : (SD(HBA_ptr)->bustype == 'E') ? "EISA" : "ISA ",
993 HBA_ptr->base, HBA_ptr->irq, SD(HBA_ptr)->channel, HBA_ptr->this_id,
994 SD(HBA_ptr)->primary ? 'Y' : 'N', HBA_ptr->can_queue,
995 HBA_ptr->sg_tablesize, HBA_ptr->cmd_per_lun);
996 HBA_ptr = SD(HBA_ptr)->next;
999 return (registered_HBAs);
1002 static struct scsi_host_template driver_template = {
1003 .proc_name = "eata_pio",
1004 .name = "EATA (Extended Attachment) PIO driver",
1005 .proc_info = eata_pio_proc_info,
1006 .detect = eata_pio_detect,
1007 .release = eata_pio_release,
1008 .queuecommand = eata_pio_queue,
1009 .eh_abort_handler = eata_pio_abort,
1010 .eh_host_reset_handler = eata_pio_host_reset,
1011 .use_clustering = ENABLE_CLUSTERING,
1014 MODULE_AUTHOR("Michael Neuffer, Alfred Arnold");
1015 MODULE_DESCRIPTION("EATA SCSI PIO driver");
1016 MODULE_LICENSE("GPL");
1018 #include "scsi_module.c"