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49#include <linux/module.h>
50#include <linux/kernel.h>
51#include <linux/string.h>
52#include <linux/ioport.h>
53#include <linux/in.h>
54#include <linux/pci.h>
55#include <linux/proc_fs.h>
56#include <linux/interrupt.h>
57#include <linux/blkdev.h>
58#include <linux/spinlock.h>
59#include <linux/delay.h>
60
61#include <asm/io.h>
62
63#include <scsi/scsi.h>
64#include <scsi/scsi_cmnd.h>
65#include <scsi/scsi_device.h>
66#include <scsi/scsi_host.h>
67
68#include "eata_generic.h"
69#include "eata_pio.h"
70
71
72static unsigned int ISAbases[MAXISA] = {
73 0x1F0, 0x170, 0x330, 0x230
74};
75
76static unsigned int ISAirqs[MAXISA] = {
77 14, 12, 15, 11
78};
79
80static unsigned char EISAbases[] = {
81 1, 1, 1, 1, 1, 1, 1, 1,
82 1, 1, 1, 1, 1, 1, 1, 1
83};
84
85static unsigned int registered_HBAs;
86static struct Scsi_Host *last_HBA;
87static struct Scsi_Host *first_HBA;
88static unsigned char reg_IRQ[16];
89static unsigned char reg_IRQL[16];
90static unsigned long int_counter;
91static unsigned long queue_counter;
92
93static struct scsi_host_template driver_template;
94
95
96
97
98
99
100
101
102
103
104
105
106static int eata_pio_proc_info(struct Scsi_Host *shost, char *buffer, char **start, off_t offset,
107 int length, int rw)
108{
109 int len = 0;
110 off_t begin = 0, pos = 0;
111
112 if (rw)
113 return -ENOSYS;
114
115 len += sprintf(buffer+len, "EATA (Extended Attachment) PIO driver version: "
116 "%d.%d%s\n",VER_MAJOR, VER_MINOR, VER_SUB);
117 len += sprintf(buffer + len, "queued commands: %10ld\n"
118 "processed interrupts:%10ld\n", queue_counter, int_counter);
119 len += sprintf(buffer + len, "\nscsi%-2d: HBA %.10s\n",
120 shost->host_no, SD(shost)->name);
121 len += sprintf(buffer + len, "Firmware revision: v%s\n",
122 SD(shost)->revision);
123 len += sprintf(buffer + len, "IO: PIO\n");
124 len += sprintf(buffer + len, "Base IO : %#.4x\n", (u32) shost->base);
125 len += sprintf(buffer + len, "Host Bus: %s\n",
126 (SD(shost)->bustype == 'P')?"PCI ":
127 (SD(shost)->bustype == 'E')?"EISA":"ISA ");
128
129 pos = begin + len;
130
131 if (pos < offset) {
132 len = 0;
133 begin = pos;
134 }
135 if (pos > offset + length)
136 goto stop_output;
137
138stop_output:
139 DBG(DBG_PROC, printk("2pos: %ld offset: %ld len: %d\n", pos, offset, len));
140 *start = buffer + (offset - begin);
141 len -= (offset - begin);
142 if (len > length)
143 len = length;
144 DBG(DBG_PROC, printk("3pos: %ld offset: %ld len: %d\n", pos, offset, len));
145
146 return len;
147}
148
149static int eata_pio_release(struct Scsi_Host *sh)
150{
151 hostdata *hd = SD(sh);
152 if (sh->irq && reg_IRQ[sh->irq] == 1)
153 free_irq(sh->irq, NULL);
154 else
155 reg_IRQ[sh->irq]--;
156 if (SD(sh)->channel == 0) {
157 if (sh->io_port && sh->n_io_port)
158 release_region(sh->io_port, sh->n_io_port);
159 }
160
161 if (hd->pdev)
162 pci_dev_put(hd->pdev);
163 return 1;
164}
165
166static void IncStat(struct scsi_pointer *SCp, unsigned int Increment)
167{
168 SCp->ptr += Increment;
169 if ((SCp->this_residual -= Increment) == 0) {
170 if ((--SCp->buffers_residual) == 0)
171 SCp->Status = 0;
172 else {
173 SCp->buffer++;
174 SCp->ptr = sg_virt(SCp->buffer);
175 SCp->this_residual = SCp->buffer->length;
176 }
177 }
178}
179
180static irqreturn_t eata_pio_int_handler(int irq, void *dev_id);
181
182static irqreturn_t do_eata_pio_int_handler(int irq, void *dev_id)
183{
184 unsigned long flags;
185 struct Scsi_Host *dev = dev_id;
186 irqreturn_t ret;
187
188 spin_lock_irqsave(dev->host_lock, flags);
189 ret = eata_pio_int_handler(irq, dev_id);
190 spin_unlock_irqrestore(dev->host_lock, flags);
191 return ret;
192}
193
194static irqreturn_t eata_pio_int_handler(int irq, void *dev_id)
195{
196 unsigned int eata_stat = 0xfffff;
197 struct scsi_cmnd *cmd;
198 hostdata *hd;
199 struct eata_ccb *cp;
200 unsigned long base;
201 unsigned int x, z;
202 struct Scsi_Host *sh;
203 unsigned short zwickel = 0;
204 unsigned char stat, odd;
205 irqreturn_t ret = IRQ_NONE;
206
207 for (x = 1, sh = first_HBA; x <= registered_HBAs; x++, sh = SD(sh)->prev)
208 {
209 if (sh->irq != irq)
210 continue;
211 if (inb(sh->base + HA_RSTATUS) & HA_SBUSY)
212 continue;
213
214 int_counter++;
215 ret = IRQ_HANDLED;
216
217 hd = SD(sh);
218
219 cp = &hd->ccb[0];
220 cmd = cp->cmd;
221 base = cmd->device->host->base;
222
223 do {
224 stat = inb(base + HA_RSTATUS);
225 if (stat & HA_SDRQ) {
226 if (cp->DataIn) {
227 z = 256;
228 odd = 0;
229 while ((cmd->SCp.Status) && ((z > 0) || (odd))) {
230 if (odd) {
231 *(cmd->SCp.ptr) = zwickel >> 8;
232 IncStat(&cmd->SCp, 1);
233 odd = 0;
234 }
235 x = min_t(unsigned int, z, cmd->SCp.this_residual / 2);
236 insw(base + HA_RDATA, cmd->SCp.ptr, x);
237 z -= x;
238 IncStat(&cmd->SCp, 2 * x);
239 if ((z > 0) && (cmd->SCp.this_residual == 1)) {
240 zwickel = inw(base + HA_RDATA);
241 *(cmd->SCp.ptr) = zwickel & 0xff;
242 IncStat(&cmd->SCp, 1);
243 z--;
244 odd = 1;
245 }
246 }
247 while (z > 0) {
248 zwickel = inw(base + HA_RDATA);
249 z--;
250 }
251 } else {
252
253 odd = 0;
254 z = 256;
255 while ((cmd->SCp.Status) && ((z > 0) || (odd))) {
256 if (odd) {
257 zwickel += *(cmd->SCp.ptr) << 8;
258 IncStat(&cmd->SCp, 1);
259 outw(zwickel, base + HA_RDATA);
260 z--;
261 odd = 0;
262 }
263 x = min_t(unsigned int, z, cmd->SCp.this_residual / 2);
264 outsw(base + HA_RDATA, cmd->SCp.ptr, x);
265 z -= x;
266 IncStat(&cmd->SCp, 2 * x);
267 if ((z > 0) && (cmd->SCp.this_residual == 1)) {
268 zwickel = *(cmd->SCp.ptr);
269 zwickel &= 0xff;
270 IncStat(&cmd->SCp, 1);
271 odd = 1;
272 }
273 }
274 while (z > 0 || odd) {
275 outw(zwickel, base + HA_RDATA);
276 z--;
277 odd = 0;
278 }
279 }
280 }
281 }
282 while ((stat & HA_SDRQ) || ((stat & HA_SMORE) && hd->moresupport));
283
284
285
286
287 if (stat & HA_SBUSY)
288 break;
289
290
291
292
293 if (!(inb(base + HA_RSTATUS) & HA_SERROR)) {
294 cmd->result = (DID_OK << 16);
295 hd->devflags |= (1 << cp->cp_id);
296 } else if (hd->devflags & (1 << cp->cp_id))
297 cmd->result = (DID_OK << 16) + 0x02;
298 else
299 cmd->result = (DID_NO_CONNECT << 16);
300
301 if (cp->status == LOCKED) {
302 cp->status = FREE;
303 eata_stat = inb(base + HA_RSTATUS);
304 printk(KERN_CRIT "eata_pio: int_handler, freeing locked " "queueslot\n");
305 return ret;
306 }
307#if DBG_INTR2
308 if (stat != 0x50)
309 printk(KERN_DEBUG "stat: %#.2x, result: %#.8x\n", stat, cmd->result);
310#endif
311
312 cp->status = FREE;
313
314 cmd->scsi_done(cmd);
315 }
316
317 return ret;
318}
319
320static inline unsigned int eata_pio_send_command(unsigned long base, unsigned char command)
321{
322 unsigned int loop = 50;
323
324 while (inb(base + HA_RSTATUS) & HA_SBUSY)
325 if (--loop == 0)
326 return 1;
327
328
329
330
331
332 outb(HA_CTRL_8HEADS, base + HA_CTRLREG);
333
334 outb(command, base + HA_WCOMMAND);
335 return 0;
336}
337
338static int eata_pio_queue_lck(struct scsi_cmnd *cmd,
339 void (*done)(struct scsi_cmnd *))
340{
341 unsigned int x, y;
342 unsigned long base;
343
344 hostdata *hd;
345 struct Scsi_Host *sh;
346 struct eata_ccb *cp;
347
348 queue_counter++;
349
350 hd = HD(cmd);
351 sh = cmd->device->host;
352 base = sh->base;
353
354
355
356 y = x = 0;
357
358 if (hd->ccb[y].status != FREE) {
359
360 DBG(DBG_QUEUE, printk(KERN_EMERG "can_queue %d, x %d, y %d\n", sh->can_queue, x, y));
361#if DEBUG_EATA
362 panic(KERN_EMERG "eata_pio: run out of queue slots cmdno:%ld " "intrno: %ld\n", queue_counter, int_counter);
363#else
364 panic(KERN_EMERG "eata_pio: run out of queue slots....\n");
365#endif
366 }
367
368 cp = &hd->ccb[y];
369
370 memset(cp, 0, sizeof(struct eata_ccb));
371
372 cp->status = USED;
373
374 DBG(DBG_QUEUE, scmd_printk(KERN_DEBUG, cmd,
375 "eata_pio_queue pid %ld, y %d\n",
376 cmd->serial_number, y));
377
378 cmd->scsi_done = (void *) done;
379
380 if (cmd->sc_data_direction == DMA_TO_DEVICE)
381 cp->DataOut = 1;
382 else
383 cp->DataIn = 0;
384
385 cp->Interpret = (cmd->device->id == hd->hostid);
386 cp->cp_datalen = cpu_to_be32(scsi_bufflen(cmd));
387 cp->Auto_Req_Sen = 0;
388 cp->cp_reqDMA = 0;
389 cp->reqlen = 0;
390
391 cp->cp_id = cmd->device->id;
392 cp->cp_lun = cmd->device->lun;
393 cp->cp_dispri = 0;
394 cp->cp_identify = 1;
395 memcpy(cp->cp_cdb, cmd->cmnd, COMMAND_SIZE(*cmd->cmnd));
396
397 cp->cp_statDMA = 0;
398
399 cp->cp_viraddr = cp;
400 cp->cmd = cmd;
401 cmd->host_scribble = (char *) &hd->ccb[y];
402
403 if (!scsi_bufflen(cmd)) {
404 cmd->SCp.buffers_residual = 1;
405 cmd->SCp.ptr = NULL;
406 cmd->SCp.this_residual = 0;
407 cmd->SCp.buffer = NULL;
408 } else {
409 cmd->SCp.buffer = scsi_sglist(cmd);
410 cmd->SCp.buffers_residual = scsi_sg_count(cmd);
411 cmd->SCp.ptr = sg_virt(cmd->SCp.buffer);
412 cmd->SCp.this_residual = cmd->SCp.buffer->length;
413 }
414 cmd->SCp.Status = (cmd->SCp.this_residual != 0);
415
416
417 if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP)) {
418 cmd->result = DID_BUS_BUSY << 16;
419 scmd_printk(KERN_NOTICE, cmd,
420 "eata_pio_queue pid %ld, HBA busy, "
421 "returning DID_BUS_BUSY, done.\n", cmd->serial_number);
422 done(cmd);
423 cp->status = FREE;
424 return 0;
425 }
426
427 while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
428 cpu_relax();
429 outsw(base + HA_RDATA, cp, hd->cplen);
430 outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND);
431 for (x = 0; x < hd->cppadlen; x++)
432 outw(0, base + HA_RDATA);
433
434 DBG(DBG_QUEUE, scmd_printk(KERN_DEBUG, cmd,
435 "Queued base %#.4lx pid: %ld "
436 "slot %d irq %d\n", sh->base, cmd->serial_number, y, sh->irq));
437
438 return 0;
439}
440
441static DEF_SCSI_QCMD(eata_pio_queue)
442
443static int eata_pio_abort(struct scsi_cmnd *cmd)
444{
445 unsigned int loop = 100;
446
447 DBG(DBG_ABNORM, scmd_printk(KERN_WARNING, cmd,
448 "eata_pio_abort called pid: %ld\n",
449 cmd->serial_number));
450
451 while (inb(cmd->device->host->base + HA_RAUXSTAT) & HA_ABUSY)
452 if (--loop == 0) {
453 printk(KERN_WARNING "eata_pio: abort, timeout error.\n");
454 return FAILED;
455 }
456 if (CD(cmd)->status == FREE) {
457 DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_NOT_RUNNING\n"));
458 return FAILED;
459 }
460 if (CD(cmd)->status == USED) {
461 DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_BUSY\n"));
462
463 return FAILED;
464 }
465 if (CD(cmd)->status == RESET) {
466 printk(KERN_WARNING "eata_pio: abort, command reset error.\n");
467 return FAILED;
468 }
469 if (CD(cmd)->status == LOCKED) {
470 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio: abort, queue slot " "locked.\n"));
471 return FAILED;
472 }
473 panic("eata_pio: abort: invalid slot status\n");
474}
475
476static int eata_pio_host_reset(struct scsi_cmnd *cmd)
477{
478 unsigned int x, limit = 0;
479 unsigned char success = 0;
480 struct scsi_cmnd *sp;
481 struct Scsi_Host *host = cmd->device->host;
482
483 DBG(DBG_ABNORM, scmd_printk(KERN_WARNING, cmd,
484 "eata_pio_reset called pid:%ld\n",
485 cmd->serial_number));
486
487 spin_lock_irq(host->host_lock);
488
489 if (HD(cmd)->state == RESET) {
490 printk(KERN_WARNING "eata_pio_reset: exit, already in reset.\n");
491 spin_unlock_irq(host->host_lock);
492 return FAILED;
493 }
494
495
496
497 for (x = 0; x < cmd->device->host->can_queue; x++) {
498
499 if (HD(cmd)->ccb[x].status == FREE)
500 continue;
501
502 sp = HD(cmd)->ccb[x].cmd;
503 HD(cmd)->ccb[x].status = RESET;
504 printk(KERN_WARNING "eata_pio_reset: slot %d in reset, pid %ld.\n", x, sp->serial_number);
505
506 if (sp == NULL)
507 panic("eata_pio_reset: slot %d, sp==NULL.\n", x);
508 }
509
510
511 outb(EATA_CMD_RESET, cmd->device->host->base + HA_WCOMMAND);
512
513 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: board reset done.\n"));
514 HD(cmd)->state = RESET;
515
516 spin_unlock_irq(host->host_lock);
517 msleep(3000);
518 spin_lock_irq(host->host_lock);
519
520 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: interrupts disabled, " "loops %d.\n", limit));
521
522 for (x = 0; x < cmd->device->host->can_queue; x++) {
523
524
525 if (HD(cmd)->ccb[x].status != RESET)
526 continue;
527
528 sp = HD(cmd)->ccb[x].cmd;
529 sp->result = DID_RESET << 16;
530
531
532 printk(KERN_WARNING "eata_pio_reset: reset ccb %d.\n", x);
533 HD(cmd)->ccb[x].status = FREE;
534
535 sp->scsi_done(sp);
536 }
537
538 HD(cmd)->state = 0;
539
540 spin_unlock_irq(host->host_lock);
541
542 if (success) {
543 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, success.\n"));
544 return SUCCESS;
545 } else {
546 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, wakeup.\n"));
547 return FAILED;
548 }
549}
550
551static char *get_pio_board_data(unsigned long base, unsigned int irq, unsigned int id, unsigned long cplen, unsigned short cppadlen)
552{
553 struct eata_ccb cp;
554 static char buff[256];
555 int z;
556
557 memset(&cp, 0, sizeof(struct eata_ccb));
558 memset(buff, 0, sizeof(buff));
559
560 cp.DataIn = 1;
561 cp.Interpret = 1;
562
563 cp.cp_datalen = cpu_to_be32(254);
564 cp.cp_dataDMA = cpu_to_be32(0);
565
566 cp.cp_id = id;
567 cp.cp_lun = 0;
568
569 cp.cp_cdb[0] = INQUIRY;
570 cp.cp_cdb[1] = 0;
571 cp.cp_cdb[2] = 0;
572 cp.cp_cdb[3] = 0;
573 cp.cp_cdb[4] = 254;
574 cp.cp_cdb[5] = 0;
575
576 if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP))
577 return NULL;
578
579 while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
580 cpu_relax();
581
582 outsw(base + HA_RDATA, &cp, cplen);
583 outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND);
584 for (z = 0; z < cppadlen; z++)
585 outw(0, base + HA_RDATA);
586
587 while (inb(base + HA_RSTATUS) & HA_SBUSY)
588 cpu_relax();
589
590 if (inb(base + HA_RSTATUS) & HA_SERROR)
591 return NULL;
592 else if (!(inb(base + HA_RSTATUS) & HA_SDRQ))
593 return NULL;
594 else {
595 insw(base + HA_RDATA, &buff, 127);
596 while (inb(base + HA_RSTATUS) & HA_SDRQ)
597 inw(base + HA_RDATA);
598 return buff;
599 }
600}
601
602static int get_pio_conf_PIO(unsigned long base, struct get_conf *buf)
603{
604 unsigned long loop = HZ / 2;
605 int z;
606 unsigned short *p;
607
608 if (!request_region(base, 9, "eata_pio"))
609 return 0;
610
611 memset(buf, 0, sizeof(struct get_conf));
612
613 while (inb(base + HA_RSTATUS) & HA_SBUSY)
614 if (--loop == 0)
615 goto fail;
616
617 DBG(DBG_PIO && DBG_PROBE, printk(KERN_DEBUG "Issuing PIO READ CONFIG to HBA at %#lx\n", base));
618 eata_pio_send_command(base, EATA_CMD_PIO_READ_CONFIG);
619
620 loop = 50;
621 for (p = (unsigned short *) buf; (long) p <= ((long) buf + (sizeof(struct get_conf) / 2)); p++) {
622 while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
623 if (--loop == 0)
624 goto fail;
625
626 loop = 50;
627 *p = inw(base + HA_RDATA);
628 }
629 if (inb(base + HA_RSTATUS) & HA_SERROR) {
630 DBG(DBG_PROBE, printk("eata_dma: get_conf_PIO, error during "
631 "transfer for HBA at %lx\n", base));
632 goto fail;
633 }
634
635 if (cpu_to_be32(EATA_SIGNATURE) != buf->signature)
636 goto fail;
637
638 DBG(DBG_PIO && DBG_PROBE, printk(KERN_NOTICE "EATA Controller found "
639 "at %#4lx EATA Level: %x\n",
640 base, (unsigned int) (buf->version)));
641
642 while (inb(base + HA_RSTATUS) & HA_SDRQ)
643 inw(base + HA_RDATA);
644
645 if (!ALLOW_DMA_BOARDS) {
646 for (z = 0; z < MAXISA; z++)
647 if (base == ISAbases[z]) {
648 buf->IRQ = ISAirqs[z];
649 break;
650 }
651 }
652
653 return 1;
654
655 fail:
656 release_region(base, 9);
657 return 0;
658}
659
660static void print_pio_config(struct get_conf *gc)
661{
662 printk("Please check values: (read config data)\n");
663 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);
664 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);
665 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);
666}
667
668static unsigned int print_selftest(unsigned int base)
669{
670 unsigned char buffer[512];
671#ifdef VERBOSE_SETUP
672 int z;
673#endif
674
675 printk("eata_pio: executing controller self test & setup...\n");
676 while (inb(base + HA_RSTATUS) & HA_SBUSY);
677 outb(EATA_CMD_PIO_SETUPTEST, base + HA_WCOMMAND);
678 do {
679 while (inb(base + HA_RSTATUS) & HA_SBUSY)
680 ;
681 if (inb(base + HA_RSTATUS) & HA_SDRQ) {
682 insw(base + HA_RDATA, &buffer, 256);
683#ifdef VERBOSE_SETUP
684
685 for (z = 0; z < 511 && buffer[z]; z++)
686 if (buffer[z] != 7)
687 printk("%c", buffer[z]);
688#endif
689 }
690 } while (inb(base + HA_RSTATUS) & (HA_SBUSY | HA_SDRQ));
691
692 return (!(inb(base + HA_RSTATUS) & HA_SERROR));
693}
694
695static int register_pio_HBA(long base, struct get_conf *gc, struct pci_dev *pdev)
696{
697 unsigned long size = 0;
698 char *buff;
699 unsigned long cplen;
700 unsigned short cppadlen;
701 struct Scsi_Host *sh;
702 hostdata *hd;
703
704 DBG(DBG_REGISTER, print_pio_config(gc));
705
706 if (gc->DMA_support) {
707 printk("HBA at %#.4lx supports DMA. Please use EATA-DMA driver.\n", base);
708 if (!ALLOW_DMA_BOARDS)
709 return 0;
710 }
711
712 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) {
713 printk("HBA at %#lx didn't react on INQUIRY. Sorry.\n", base);
714 return 0;
715 }
716
717 if (!print_selftest(base) && !ALLOW_DMA_BOARDS) {
718 printk("HBA at %#lx failed while performing self test & setup.\n", base);
719 return 0;
720 }
721
722 size = sizeof(hostdata) + (sizeof(struct eata_ccb) * be16_to_cpu(gc->queuesiz));
723
724 sh = scsi_register(&driver_template, size);
725 if (sh == NULL)
726 return 0;
727
728 if (!reg_IRQ[gc->IRQ]) {
729 if (!request_irq(gc->IRQ, do_eata_pio_int_handler, IRQF_DISABLED, "EATA-PIO", sh)) {
730 reg_IRQ[gc->IRQ]++;
731 if (!gc->IRQ_TR)
732 reg_IRQL[gc->IRQ] = 1;
733 } else {
734 printk("Couldn't allocate IRQ %d, Sorry.\n", gc->IRQ);
735 return 0;
736 }
737 } else {
738 if (reg_IRQL[gc->IRQ]) {
739 printk("Can't support more than one HBA on this IRQ,\n" " if the IRQ is edge triggered. Sorry.\n");
740 return 0;
741 } else
742 reg_IRQ[gc->IRQ]++;
743 }
744
745 hd = SD(sh);
746
747 memset(hd->ccb, 0, (sizeof(struct eata_ccb) * be16_to_cpu(gc->queuesiz)));
748 memset(hd->reads, 0, sizeof(hd->reads));
749
750 strlcpy(SD(sh)->vendor, &buff[8], sizeof(SD(sh)->vendor));
751 strlcpy(SD(sh)->name, &buff[16], sizeof(SD(sh)->name));
752 SD(sh)->revision[0] = buff[32];
753 SD(sh)->revision[1] = buff[33];
754 SD(sh)->revision[2] = buff[34];
755 SD(sh)->revision[3] = '.';
756 SD(sh)->revision[4] = buff[35];
757 SD(sh)->revision[5] = 0;
758
759 switch (be32_to_cpu(gc->len)) {
760 case 0x1c:
761 SD(sh)->EATA_revision = 'a';
762 break;
763 case 0x1e:
764 SD(sh)->EATA_revision = 'b';
765 break;
766 case 0x22:
767 SD(sh)->EATA_revision = 'c';
768 break;
769 case 0x24:
770 SD(sh)->EATA_revision = 'z';
771 default:
772 SD(sh)->EATA_revision = '?';
773 }
774
775 if (be32_to_cpu(gc->len) >= 0x22) {
776 if (gc->is_PCI)
777 hd->bustype = IS_PCI;
778 else if (gc->is_EISA)
779 hd->bustype = IS_EISA;
780 else
781 hd->bustype = IS_ISA;
782 } else {
783 if (buff[21] == '4')
784 hd->bustype = IS_PCI;
785 else if (buff[21] == '2')
786 hd->bustype = IS_EISA;
787 else
788 hd->bustype = IS_ISA;
789 }
790
791 SD(sh)->cplen = cplen;
792 SD(sh)->cppadlen = cppadlen;
793 SD(sh)->hostid = gc->scsi_id[3];
794 SD(sh)->devflags = 1 << gc->scsi_id[3];
795 SD(sh)->moresupport = gc->MORE_support;
796 sh->unique_id = base;
797 sh->base = base;
798 sh->io_port = base;
799 sh->n_io_port = 9;
800 sh->irq = gc->IRQ;
801 sh->dma_channel = PIO;
802 sh->this_id = gc->scsi_id[3];
803 sh->can_queue = 1;
804 sh->cmd_per_lun = 1;
805 sh->sg_tablesize = SG_ALL;
806
807 hd->channel = 0;
808
809 hd->pdev = pci_dev_get(pdev);
810
811 sh->max_id = 8;
812 sh->max_lun = 8;
813
814 if (gc->SECOND)
815 hd->primary = 0;
816 else
817 hd->primary = 1;
818
819 hd->next = NULL;
820 hd->prev = last_HBA;
821 if (hd->prev != NULL)
822 SD(hd->prev)->next = sh;
823 last_HBA = sh;
824 if (first_HBA == NULL)
825 first_HBA = sh;
826 registered_HBAs++;
827 return (1);
828}
829
830static void find_pio_ISA(struct get_conf *buf)
831{
832 int i;
833
834 for (i = 0; i < MAXISA; i++) {
835 if (!ISAbases[i])
836 continue;
837 if (!get_pio_conf_PIO(ISAbases[i], buf))
838 continue;
839 if (!register_pio_HBA(ISAbases[i], buf, NULL))
840 release_region(ISAbases[i], 9);
841 else
842 ISAbases[i] = 0;
843 }
844 return;
845}
846
847static void find_pio_EISA(struct get_conf *buf)
848{
849 u32 base;
850 int i;
851
852#ifdef CHECKPAL
853 u8 pal1, pal2, pal3;
854#endif
855
856 for (i = 0; i < MAXEISA; i++) {
857 if (EISAbases[i]) {
858
859 base = 0x1c88 + (i * 0x1000);
860#ifdef CHECKPAL
861 pal1 = inb((u16) base - 8);
862 pal2 = inb((u16) base - 7);
863 pal3 = inb((u16) base - 6);
864
865 if (((pal1 == 0x12) && (pal2 == 0x14)) || ((pal1 == 0x38) && (pal2 == 0xa3) && (pal3 == 0x82)) || ((pal1 == 0x06) && (pal2 == 0x94) && (pal3 == 0x24))) {
866 DBG(DBG_PROBE, printk(KERN_NOTICE "EISA EATA id tags found: " "%x %x %x \n", (int) pal1, (int) pal2, (int) pal3));
867#endif
868 if (get_pio_conf_PIO(base, buf)) {
869 DBG(DBG_PROBE && DBG_EISA, print_pio_config(buf));
870 if (buf->IRQ) {
871 if (!register_pio_HBA(base, buf, NULL))
872 release_region(base, 9);
873 } else {
874 printk(KERN_NOTICE "eata_dma: No valid IRQ. HBA " "removed from list\n");
875 release_region(base, 9);
876 }
877 }
878
879 EISAbases[i] = 0;
880#ifdef CHECKPAL
881 }
882#endif
883 }
884 }
885 return;
886}
887
888static void find_pio_PCI(struct get_conf *buf)
889{
890#ifndef CONFIG_PCI
891 printk("eata_dma: kernel PCI support not enabled. Skipping scan for PCI HBAs.\n");
892#else
893 struct pci_dev *dev = NULL;
894 unsigned long base, x;
895
896 while ((dev = pci_get_device(PCI_VENDOR_ID_DPT, PCI_DEVICE_ID_DPT, dev)) != NULL) {
897 DBG(DBG_PROBE && DBG_PCI, printk("eata_pio: find_PCI, HBA at %s\n", pci_name(dev)));
898 if (pci_enable_device(dev))
899 continue;
900 pci_set_master(dev);
901 base = pci_resource_flags(dev, 0);
902 if (base & IORESOURCE_MEM) {
903 printk("eata_pio: invalid base address of device %s\n", pci_name(dev));
904 continue;
905 }
906 base = pci_resource_start(dev, 0);
907
908 if ((inb(base) == 0x12) && (inb(base + 1) == 0x14))
909 continue;
910 base += 0x10;
911 if (base != 0x1f8) {
912
913 if (get_pio_conf_PIO(base, buf)) {
914 if (buf->FORCADR) {
915 release_region(base, 9);
916 continue;
917 }
918
919
920
921
922
923
924 if (!register_pio_HBA(base, buf, dev)) {
925 release_region(base, 9);
926 continue;
927 }
928
929 if (base < 0x1000) {
930 for (x = 0; x < MAXISA; ++x) {
931 if (ISAbases[x] == base) {
932 ISAbases[x] = 0;
933 break;
934 }
935 }
936 } else if ((base & 0x0fff) == 0x0c88) {
937 x = (base >> 12) & 0x0f;
938 EISAbases[x] = 0;
939 }
940 }
941#ifdef CHECK_BLINK
942 else if (check_blink_state(base)) {
943 printk("eata_pio: HBA is in BLINK state.\n" "Consult your HBAs manual to correct this.\n");
944 }
945#endif
946 }
947 }
948#endif
949}
950
951static int eata_pio_detect(struct scsi_host_template *tpnt)
952{
953 struct Scsi_Host *HBA_ptr;
954 struct get_conf gc;
955 int i;
956
957 find_pio_PCI(&gc);
958 find_pio_EISA(&gc);
959 find_pio_ISA(&gc);
960
961 for (i = 0; i <= MAXIRQ; i++)
962 if (reg_IRQ[i])
963 request_irq(i, do_eata_pio_int_handler, IRQF_DISABLED, "EATA-PIO", NULL);
964
965 HBA_ptr = first_HBA;
966
967 if (registered_HBAs != 0) {
968 printk("EATA (Extended Attachment) PIO driver version: %d.%d%s\n"
969 "(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);
970
971 printk("Registered HBAs:\n");
972 printk("HBA no. Boardtype: Revis: EATA: Bus: BaseIO: IRQ: Ch: ID: Pr:" " QS: SG: CPL:\n");
973 for (i = 1; i <= registered_HBAs; i++) {
974 printk("scsi%-2d: %.10s v%s 2.0%c %s %#.4lx %2d %d %d %c"
975 " %2d %2d %2d\n",
976 HBA_ptr->host_no, SD(HBA_ptr)->name, SD(HBA_ptr)->revision,
977 SD(HBA_ptr)->EATA_revision, (SD(HBA_ptr)->bustype == 'P') ?
978 "PCI " : (SD(HBA_ptr)->bustype == 'E') ? "EISA" : "ISA ",
979 HBA_ptr->base, HBA_ptr->irq, SD(HBA_ptr)->channel, HBA_ptr->this_id,
980 SD(HBA_ptr)->primary ? 'Y' : 'N', HBA_ptr->can_queue,
981 HBA_ptr->sg_tablesize, HBA_ptr->cmd_per_lun);
982 HBA_ptr = SD(HBA_ptr)->next;
983 }
984 }
985 return (registered_HBAs);
986}
987
988static struct scsi_host_template driver_template = {
989 .proc_name = "eata_pio",
990 .name = "EATA (Extended Attachment) PIO driver",
991 .proc_info = eata_pio_proc_info,
992 .detect = eata_pio_detect,
993 .release = eata_pio_release,
994 .queuecommand = eata_pio_queue,
995 .eh_abort_handler = eata_pio_abort,
996 .eh_host_reset_handler = eata_pio_host_reset,
997 .use_clustering = ENABLE_CLUSTERING,
998};
999
1000MODULE_AUTHOR("Michael Neuffer, Alfred Arnold");
1001MODULE_DESCRIPTION("EATA SCSI PIO driver");
1002MODULE_LICENSE("GPL");
1003
1004#include "scsi_module.c"
1005
