]> git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blame - drivers/scsi/eata_pio.c
projects / mirror_ubuntu-artful-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
UBUNTU: Ubuntu-4.13.0-45.50
[mirror_ubuntu-artful-kernel.git] / drivers / scsi / eata_pio.c
CommitLineData
1da177e4
LT		 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 * *
fa195afe
AC		 17 * Updated 2002 by Alan Cox <alan@lxorguk.ukuu.org.uk> for *
18 * Linux 2.5.x and the newer locking and error handling *
1da177e4
LT		 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 ************************************************************/
48
1da177e4
LT		 49#include <linux/module.h>
50#include <linux/kernel.h>
1da177e4
LT		 51#include <linux/string.h>
52#include <linux/ioport.h>
1da177e4
LT		 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
1a68d41a 72static unsigned int ISAbases[MAXISA] = {
1da177e4
LT		 73 0x1F0, 0x170, 0x330, 0x230
74};
75
1a68d41a 76static unsigned int ISAirqs[MAXISA] = {
1da177e4
LT		 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
1a68d41a 85static unsigned int registered_HBAs;
1da177e4
LT		 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
8c986544 95static int eata_pio_show_info(struct seq_file *m, struct Scsi_Host *shost)
1da177e4 96{
8c986544 97 seq_printf(m, "EATA (Extended Attachment) PIO driver version: "
1da177e4 98 "%d.%d%s\n",VER_MAJOR, VER_MINOR, VER_SUB);
8c986544 99 seq_printf(m, "queued commands: %10ld\n"
1da177e4 100 "processed interrupts:%10ld\n", queue_counter, int_counter);
8c986544 101 seq_printf(m, "\nscsi%-2d: HBA %.10s\n",
1da177e4 102 shost->host_no, SD(shost)->name);
8c986544 103 seq_printf(m, "Firmware revision: v%s\n",
1da177e4 104 SD(shost)->revision);
91c40f24 105 seq_puts(m, "IO: PIO\n");
8c986544
AV		 106 seq_printf(m, "Base IO : %#.4x\n", (u32) shost->base);
107 seq_printf(m, "Host Bus: %s\n",
1da177e4
LT		 108 (SD(shost)->bustype == 'P')?"PCI ":
109 (SD(shost)->bustype == 'E')?"EISA":"ISA ");
8c986544 110 return 0;
1da177e4
LT		 111}
112
113static int eata_pio_release(struct Scsi_Host *sh)
114{
1a68d41a 115 hostdata *hd = SD(sh);
1da177e4
LT		 116 if (sh->irq && reg_IRQ[sh->irq] == 1)
117 free_irq(sh->irq, NULL);
118 else
119 reg_IRQ[sh->irq]--;
120 if (SD(sh)->channel == 0) {
121 if (sh->io_port && sh->n_io_port)
122 release_region(sh->io_port, sh->n_io_port);
123 }
1a68d41a
AC		 124 /* At this point the PCI reference can go */
125 if (hd->pdev)
126 pci_dev_put(hd->pdev);
1da177e4
LT		 127 return 1;
128}
129
1a68d41a 130static void IncStat(struct scsi_pointer *SCp, unsigned int Increment)
1da177e4
LT		 131{
132 SCp->ptr += Increment;
133 if ((SCp->this_residual -= Increment) == 0) {
134 if ((--SCp->buffers_residual) == 0)
135 SCp->Status = 0;
136 else {
137 SCp->buffer++;
45711f1a 138 SCp->ptr = sg_virt(SCp->buffer);
1da177e4
LT		 139 SCp->this_residual = SCp->buffer->length;
140 }
141 }
142}
143
7d12e780 144static irqreturn_t eata_pio_int_handler(int irq, void *dev_id);
1da177e4 145
7d12e780 146static irqreturn_t do_eata_pio_int_handler(int irq, void *dev_id)
1da177e4
LT		 147{
148 unsigned long flags;
149 struct Scsi_Host *dev = dev_id;
1a68d41a 150 irqreturn_t ret;
1da177e4
LT		 151
152 spin_lock_irqsave(dev->host_lock, flags);
a31baca5 153 ret = eata_pio_int_handler(irq, dev_id);
1da177e4 154 spin_unlock_irqrestore(dev->host_lock, flags);
1a68d41a 155 return ret;
1da177e4
LT		 156}
157
7d12e780 158static irqreturn_t eata_pio_int_handler(int irq, void *dev_id)
1da177e4 159{
1a68d41a 160 unsigned int eata_stat = 0xfffff;
1da177e4
LT		 161 struct scsi_cmnd *cmd;
162 hostdata *hd;
163 struct eata_ccb *cp;
1a68d41a
AC		 164 unsigned long base;
165 unsigned int x, z;
1da177e4
LT		 166 struct Scsi_Host *sh;
167 unsigned short zwickel = 0;
168 unsigned char stat, odd;
1a68d41a 169 irqreturn_t ret = IRQ_NONE;
1da177e4
LT		 170
171 for (x = 1, sh = first_HBA; x <= registered_HBAs; x++, sh = SD(sh)->prev)
172 {
173 if (sh->irq != irq)
174 continue;
1a68d41a 175 if (inb(sh->base + HA_RSTATUS) & HA_SBUSY)
1da177e4
LT		 176 continue;
177
178 int_counter++;
1a68d41a 179 ret = IRQ_HANDLED;
1da177e4
LT		 180
181 hd = SD(sh);
182
183 cp = &hd->ccb[0];
184 cmd = cp->cmd;
1a68d41a 185 base = cmd->device->host->base;
1da177e4
LT		 186
187 do {
188 stat = inb(base + HA_RSTATUS);
189 if (stat & HA_SDRQ) {
190 if (cp->DataIn) {
191 z = 256;
192 odd = 0;
193 while ((cmd->SCp.Status) && ((z > 0) || (odd))) {
194 if (odd) {
195 *(cmd->SCp.ptr) = zwickel >> 8;
196 IncStat(&cmd->SCp, 1);
197 odd = 0;
198 }
199 x = min_t(unsigned int, z, cmd->SCp.this_residual / 2);
200 insw(base + HA_RDATA, cmd->SCp.ptr, x);
201 z -= x;
202 IncStat(&cmd->SCp, 2 * x);
203 if ((z > 0) && (cmd->SCp.this_residual == 1)) {
204 zwickel = inw(base + HA_RDATA);
205 *(cmd->SCp.ptr) = zwickel & 0xff;
206 IncStat(&cmd->SCp, 1);
207 z--;
208 odd = 1;
209 }
210 }
211 while (z > 0) {
212 zwickel = inw(base + HA_RDATA);
213 z--;
214 }
215 } else { /* cp->DataOut */
216
217 odd = 0;
218 z = 256;
219 while ((cmd->SCp.Status) && ((z > 0) || (odd))) {
220 if (odd) {
221 zwickel += *(cmd->SCp.ptr) << 8;
222 IncStat(&cmd->SCp, 1);
223 outw(zwickel, base + HA_RDATA);
224 z--;
225 odd = 0;
226 }
227 x = min_t(unsigned int, z, cmd->SCp.this_residual / 2);
228 outsw(base + HA_RDATA, cmd->SCp.ptr, x);
229 z -= x;
230 IncStat(&cmd->SCp, 2 * x);
231 if ((z > 0) && (cmd->SCp.this_residual == 1)) {
232 zwickel = *(cmd->SCp.ptr);
233 zwickel &= 0xff;
234 IncStat(&cmd->SCp, 1);
235 odd = 1;
236 }
237 }
238 while (z > 0 || odd) {
239 outw(zwickel, base + HA_RDATA);
240 z--;
241 odd = 0;
242 }
243 }
244 }
245 }
246 while ((stat & HA_SDRQ) || ((stat & HA_SMORE) && hd->moresupport));
247
248 /* terminate handler if HBA goes busy again, i.e. transfers
249 * more data */
250
251 if (stat & HA_SBUSY)
252 break;
253
254 /* OK, this is quite stupid, but I haven't found any correct
255 * way to get HBA&SCSI status so far */
256
257 if (!(inb(base + HA_RSTATUS) & HA_SERROR)) {
258 cmd->result = (DID_OK << 16);
259 hd->devflags |= (1 << cp->cp_id);
1a68d41a 260 } else if (hd->devflags & (1 << cp->cp_id))
1da177e4
LT		 261 cmd->result = (DID_OK << 16) + 0x02;
262 else
263 cmd->result = (DID_NO_CONNECT << 16);
264
265 if (cp->status == LOCKED) {
266 cp->status = FREE;
267 eata_stat = inb(base + HA_RSTATUS);
268 printk(KERN_CRIT "eata_pio: int_handler, freeing locked " "queueslot\n");
1a68d41a 269 return ret;
1da177e4
LT		 270 }
271#if DBG_INTR2
272 if (stat != 0x50)
273 printk(KERN_DEBUG "stat: %#.2x, result: %#.8x\n", stat, cmd->result);
274#endif
275
276 cp->status = FREE; /* now we can release the slot */
277
278 cmd->scsi_done(cmd);
279 }
280
1a68d41a 281 return ret;
1da177e4
LT		 282}
283
1a68d41a 284static inline unsigned int eata_pio_send_command(unsigned long base, unsigned char command)
1da177e4 285{
1a68d41a 286 unsigned int loop = 50;
1da177e4
LT		 287
288 while (inb(base + HA_RSTATUS) & HA_SBUSY)
289 if (--loop == 0)
290 return 1;
291
292 /* Enable interrupts for HBA. It is not the best way to do it at this
293 * place, but I hope that it doesn't interfere with the IDE driver
294 * initialization this way */
295
296 outb(HA_CTRL_8HEADS, base + HA_CTRLREG);
297
298 outb(command, base + HA_WCOMMAND);
299 return 0;
300}
301
f281233d 302static int eata_pio_queue_lck(struct scsi_cmnd *cmd,
1da177e4
LT		 303 void (*done)(struct scsi_cmnd *))
304{
1a68d41a
AC		 305 unsigned int x, y;
306 unsigned long base;
1da177e4
LT		 307
308 hostdata *hd;
309 struct Scsi_Host *sh;
310 struct eata_ccb *cp;
311
312 queue_counter++;
313
314 hd = HD(cmd);
315 sh = cmd->device->host;
1a68d41a 316 base = sh->base;
1da177e4
LT		 317
318 /* use only slot 0, as 2001 can handle only one cmd at a time */
319
320 y = x = 0;
321
322 if (hd->ccb[y].status != FREE) {
323
324 DBG(DBG_QUEUE, printk(KERN_EMERG "can_queue %d, x %d, y %d\n", sh->can_queue, x, y));
325#if DEBUG_EATA
326 panic(KERN_EMERG "eata_pio: run out of queue slots cmdno:%ld " "intrno: %ld\n", queue_counter, int_counter);
327#else
328 panic(KERN_EMERG "eata_pio: run out of queue slots....\n");
329#endif
330 }
331
332 cp = &hd->ccb[y];
333
334 memset(cp, 0, sizeof(struct eata_ccb));
1da177e4
LT		 335
336 cp->status = USED; /* claim free slot */
337
017560fc 338 DBG(DBG_QUEUE, scmd_printk(KERN_DEBUG, cmd,
5cd049a5 339 "eata_pio_queue 0x%p, y %d\n", cmd, y));
1da177e4
LT		 340
341 cmd->scsi_done = (void *) done;
342
343 if (cmd->sc_data_direction == DMA_TO_DEVICE)
344 cp->DataOut = 1; /* Output mode */
345 else
346 cp->DataIn = 0; /* Input mode */
347
348 cp->Interpret = (cmd->device->id == hd->hostid);
7410d849 349 cp->cp_datalen = cpu_to_be32(scsi_bufflen(cmd));
1da177e4 350 cp->Auto_Req_Sen = 0;
1a68d41a 351 cp->cp_reqDMA = 0;
1da177e4
LT		 352 cp->reqlen = 0;
353
354 cp->cp_id = cmd->device->id;
355 cp->cp_lun = cmd->device->lun;
356 cp->cp_dispri = 0;
357 cp->cp_identify = 1;
358 memcpy(cp->cp_cdb, cmd->cmnd, COMMAND_SIZE(*cmd->cmnd));
359
1a68d41a 360 cp->cp_statDMA = 0;
1da177e4
LT		 361
362 cp->cp_viraddr = cp;
363 cp->cmd = cmd;
364 cmd->host_scribble = (char *) &hd->ccb[y];
365
7410d849 366 if (!scsi_bufflen(cmd)) {
1da177e4 367 cmd->SCp.buffers_residual = 1;
7410d849
BH		 368 cmd->SCp.ptr = NULL;
369 cmd->SCp.this_residual = 0;
1da177e4
LT		 370 cmd->SCp.buffer = NULL;
371 } else {
7410d849
BH		 372 cmd->SCp.buffer = scsi_sglist(cmd);
373 cmd->SCp.buffers_residual = scsi_sg_count(cmd);
45711f1a 374 cmd->SCp.ptr = sg_virt(cmd->SCp.buffer);
1da177e4
LT		 375 cmd->SCp.this_residual = cmd->SCp.buffer->length;
376 }
377 cmd->SCp.Status = (cmd->SCp.this_residual != 0); /* TRUE as long as bytes
378 * are to transfer */
379
380 if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP)) {
381 cmd->result = DID_BUS_BUSY << 16;
017560fc 382 scmd_printk(KERN_NOTICE, cmd,
5cd049a5
CH		 383 "eata_pio_queue pid 0x%p, HBA busy, "
384 "returning DID_BUS_BUSY, done.\n", cmd);
1da177e4
LT		 385 done(cmd);
386 cp->status = FREE;
1a1d6414 387 return 0;
1da177e4
LT		 388 }
389 /* FIXME: timeout */
390 while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
391 cpu_relax();
392 outsw(base + HA_RDATA, cp, hd->cplen);
393 outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND);
394 for (x = 0; x < hd->cppadlen; x++)
395 outw(0, base + HA_RDATA);
396
017560fc 397 DBG(DBG_QUEUE, scmd_printk(KERN_DEBUG, cmd,
5cd049a5
CH		 398 "Queued base %#.4lx cmd: 0x%p "
399 "slot %d irq %d\n", sh->base, cmd, y, sh->irq));
1da177e4 400
1a1d6414 401 return 0;
1da177e4
LT		 402}
403
f281233d
JG		 404static DEF_SCSI_QCMD(eata_pio_queue)
405
1da177e4
LT		 406static int eata_pio_abort(struct scsi_cmnd *cmd)
407{
1a68d41a 408 unsigned int loop = 100;
1da177e4 409
017560fc 410 DBG(DBG_ABNORM, scmd_printk(KERN_WARNING, cmd,
5cd049a5 411 "eata_pio_abort called pid: 0x%p\n", cmd));
1da177e4
LT		 412
413 while (inb(cmd->device->host->base + HA_RAUXSTAT) & HA_ABUSY)
414 if (--loop == 0) {
415 printk(KERN_WARNING "eata_pio: abort, timeout error.\n");
416 return FAILED;
417 }
418 if (CD(cmd)->status == FREE) {
419 DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_NOT_RUNNING\n"));
420 return FAILED;
421 }
422 if (CD(cmd)->status == USED) {
423 DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_BUSY\n"));
424 /* We want to sleep a bit more here */
425 return FAILED; /* SNOOZE */
426 }
427 if (CD(cmd)->status == RESET) {
428 printk(KERN_WARNING "eata_pio: abort, command reset error.\n");
429 return FAILED;
430 }
431 if (CD(cmd)->status == LOCKED) {
432 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio: abort, queue slot " "locked.\n"));
433 return FAILED;
434 }
435 panic("eata_pio: abort: invalid slot status\n");
436}
437
438static int eata_pio_host_reset(struct scsi_cmnd *cmd)
439{
1a68d41a 440 unsigned int x, limit = 0;
1da177e4
LT		 441 unsigned char success = 0;
442 struct scsi_cmnd *sp;
443 struct Scsi_Host *host = cmd->device->host;
444
017560fc 445 DBG(DBG_ABNORM, scmd_printk(KERN_WARNING, cmd,
5cd049a5 446 "eata_pio_reset called\n"));
1da177e4 447
df0ae249
JG		 448 spin_lock_irq(host->host_lock);
449
1da177e4
LT		 450 if (HD(cmd)->state == RESET) {
451 printk(KERN_WARNING "eata_pio_reset: exit, already in reset.\n");
df0ae249 452 spin_unlock_irq(host->host_lock);
1da177e4
LT		 453 return FAILED;
454 }
455
456 /* force all slots to be free */
457
458 for (x = 0; x < cmd->device->host->can_queue; x++) {
459
460 if (HD(cmd)->ccb[x].status == FREE)
461 continue;
462
463 sp = HD(cmd)->ccb[x].cmd;
464 HD(cmd)->ccb[x].status = RESET;
5cd049a5 465 printk(KERN_WARNING "eata_pio_reset: slot %d in reset.\n", x);
1da177e4
LT		 466
467 if (sp == NULL)
468 panic("eata_pio_reset: slot %d, sp==NULL.\n", x);
469 }
470
471 /* hard reset the HBA */
1a68d41a 472 outb(EATA_CMD_RESET, cmd->device->host->base + HA_WCOMMAND);
1da177e4
LT		 473
474 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: board reset done.\n"));
475 HD(cmd)->state = RESET;
476
477 spin_unlock_irq(host->host_lock);
478 msleep(3000);
479 spin_lock_irq(host->host_lock);
480
481 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: interrupts disabled, " "loops %d.\n", limit));
482
483 for (x = 0; x < cmd->device->host->can_queue; x++) {
484
485 /* Skip slots already set free by interrupt */
486 if (HD(cmd)->ccb[x].status != RESET)
487 continue;
488
489 sp = HD(cmd)->ccb[x].cmd;
490 sp->result = DID_RESET << 16;
491
492 /* This mailbox is terminated */
493 printk(KERN_WARNING "eata_pio_reset: reset ccb %d.\n", x);
494 HD(cmd)->ccb[x].status = FREE;
495
496 sp->scsi_done(sp);
497 }
498
499 HD(cmd)->state = 0;
500
df0ae249
JG		 501 spin_unlock_irq(host->host_lock);
502
1da177e4
LT		 503 if (success) { /* hmmm... */
504 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, success.\n"));
505 return SUCCESS;
506 } else {
507 DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, wakeup.\n"));
508 return FAILED;
509 }
510}
511
1a68d41a 512static char *get_pio_board_data(unsigned long base, unsigned int irq, unsigned int id, unsigned long cplen, unsigned short cppadlen)
1da177e4
LT		 513{
514 struct eata_ccb cp;
515 static char buff[256];
516 int z;
517
518 memset(&cp, 0, sizeof(struct eata_ccb));
519 memset(buff, 0, sizeof(buff));
520
521 cp.DataIn = 1;
522 cp.Interpret = 1; /* Interpret command */
523
1a68d41a
AC		 524 cp.cp_datalen = cpu_to_be32(254);
525 cp.cp_dataDMA = cpu_to_be32(0);
1da177e4
LT		 526
527 cp.cp_id = id;
528 cp.cp_lun = 0;
529
530 cp.cp_cdb[0] = INQUIRY;
531 cp.cp_cdb[1] = 0;
532 cp.cp_cdb[2] = 0;
533 cp.cp_cdb[3] = 0;
534 cp.cp_cdb[4] = 254;
535 cp.cp_cdb[5] = 0;
536
1a68d41a 537 if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP))
1a1d6414
AC		 538 return NULL;
539
540 while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
541 cpu_relax();
542
1da177e4
LT		 543 outsw(base + HA_RDATA, &cp, cplen);
544 outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND);
545 for (z = 0; z < cppadlen; z++)
546 outw(0, base + HA_RDATA);
547
1a1d6414
AC		 548 while (inb(base + HA_RSTATUS) & HA_SBUSY)
549 cpu_relax();
550
1da177e4 551 if (inb(base + HA_RSTATUS) & HA_SERROR)
1a1d6414 552 return NULL;
1da177e4 553 else if (!(inb(base + HA_RSTATUS) & HA_SDRQ))
1a1d6414 554 return NULL;
1da177e4
LT		 555 else {
556 insw(base + HA_RDATA, &buff, 127);
557 while (inb(base + HA_RSTATUS) & HA_SDRQ)
558 inw(base + HA_RDATA);
1a1d6414 559 return buff;
1da177e4
LT		 560 }
561}
562
1a68d41a 563static int get_pio_conf_PIO(unsigned long base, struct get_conf *buf)
1da177e4
LT		 564{
565 unsigned long loop = HZ / 2;
566 int z;
567 unsigned short *p;
568
569 if (!request_region(base, 9, "eata_pio"))
570 return 0;
571
572 memset(buf, 0, sizeof(struct get_conf));
573
574 while (inb(base + HA_RSTATUS) & HA_SBUSY)
575 if (--loop == 0)
576 goto fail;
577
1a68d41a 578 DBG(DBG_PIO && DBG_PROBE, printk(KERN_DEBUG "Issuing PIO READ CONFIG to HBA at %#lx\n", base));
1da177e4
LT		 579 eata_pio_send_command(base, EATA_CMD_PIO_READ_CONFIG);
580
1a68d41a 581 loop = 50;
1da177e4
LT		 582 for (p = (unsigned short *) buf; (long) p <= ((long) buf + (sizeof(struct get_conf) / 2)); p++) {
583 while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
584 if (--loop == 0)
585 goto fail;
586
1a68d41a 587 loop = 50;
1da177e4
LT		 588 *p = inw(base + HA_RDATA);
589 }
590 if (inb(base + HA_RSTATUS) & HA_SERROR) {
591 DBG(DBG_PROBE, printk("eata_dma: get_conf_PIO, error during "
1a68d41a 592 "transfer for HBA at %lx\n", base));
1da177e4
LT		 593 goto fail;
594 }
595
1a68d41a 596 if (cpu_to_be32(EATA_SIGNATURE) != buf->signature)
1da177e4
LT		 597 goto fail;
598
599 DBG(DBG_PIO && DBG_PROBE, printk(KERN_NOTICE "EATA Controller found "
1a68d41a
AC		 600 "at %#4lx EATA Level: %x\n",
601 base, (unsigned int) (buf->version)));
1da177e4
LT		 602
603 while (inb(base + HA_RSTATUS) & HA_SDRQ)
604 inw(base + HA_RDATA);
605
606 if (!ALLOW_DMA_BOARDS) {
607 for (z = 0; z < MAXISA; z++)
608 if (base == ISAbases[z]) {
609 buf->IRQ = ISAirqs[z];
610 break;
611 }
612 }
613
614 return 1;
615
616 fail:
617 release_region(base, 9);
618 return 0;
619}
620
621static void print_pio_config(struct get_conf *gc)
622{
623 printk("Please check values: (read config data)\n");
1a68d41a
AC		 624 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);
625 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);
1da177e4
LT		 626 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);
627}
628
1a68d41a 629static unsigned int print_selftest(unsigned int base)
1da177e4
LT		 630{
631 unsigned char buffer[512];
632#ifdef VERBOSE_SETUP
633 int z;
634#endif
635
636 printk("eata_pio: executing controller self test & setup...\n");
637 while (inb(base + HA_RSTATUS) & HA_SBUSY);
638 outb(EATA_CMD_PIO_SETUPTEST, base + HA_WCOMMAND);
639 do {
640 while (inb(base + HA_RSTATUS) & HA_SBUSY)
641 /* nothing */ ;
642 if (inb(base + HA_RSTATUS) & HA_SDRQ) {
643 insw(base + HA_RDATA, &buffer, 256);
644#ifdef VERBOSE_SETUP
645 /* no beeps please... */
646 for (z = 0; z < 511 && buffer[z]; z++)
647 if (buffer[z] != 7)
648 printk("%c", buffer[z]);
649#endif
650 }
651 } while (inb(base + HA_RSTATUS) & (HA_SBUSY | HA_SDRQ));
652
653 return (!(inb(base + HA_RSTATUS) & HA_SERROR));
654}
655
1a68d41a 656static int register_pio_HBA(long base, struct get_conf *gc, struct pci_dev *pdev)
1da177e4
LT		 657{
658 unsigned long size = 0;
659 char *buff;
660 unsigned long cplen;
661 unsigned short cppadlen;
662 struct Scsi_Host *sh;
663 hostdata *hd;
664
665 DBG(DBG_REGISTER, print_pio_config(gc));
666
667 if (gc->DMA_support) {
668 printk("HBA at %#.4lx supports DMA. Please use EATA-DMA driver.\n", base);
669 if (!ALLOW_DMA_BOARDS)
670 return 0;
671 }
672
1a68d41a
AC		 673 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) {
674 printk("HBA at %#lx didn't react on INQUIRY. Sorry.\n", base);
1da177e4
LT		 675 return 0;
676 }
677
678 if (!print_selftest(base) && !ALLOW_DMA_BOARDS) {
1a68d41a 679 printk("HBA at %#lx failed while performing self test & setup.\n", base);
1da177e4
LT		 680 return 0;
681 }
682
1a68d41a 683 size = sizeof(hostdata) + (sizeof(struct eata_ccb) * be16_to_cpu(gc->queuesiz));
1da177e4
LT		 684
685 sh = scsi_register(&driver_template, size);
686 if (sh == NULL)
687 return 0;
688
689 if (!reg_IRQ[gc->IRQ]) { /* Interrupt already registered ? */
4909cc2b 690 if (!request_irq(gc->IRQ, do_eata_pio_int_handler, 0, "EATA-PIO", sh)) {
1da177e4
LT		 691 reg_IRQ[gc->IRQ]++;
692 if (!gc->IRQ_TR)
693 reg_IRQL[gc->IRQ] = 1; /* IRQ is edge triggered */
694 } else {
695 printk("Couldn't allocate IRQ %d, Sorry.\n", gc->IRQ);
696 return 0;
697 }
698 } else { /* More than one HBA on this IRQ */
699 if (reg_IRQL[gc->IRQ]) {
700 printk("Can't support more than one HBA on this IRQ,\n" " if the IRQ is edge triggered. Sorry.\n");
701 return 0;
702 } else
703 reg_IRQ[gc->IRQ]++;
704 }
705
706 hd = SD(sh);
707
1a68d41a
AC		 708 memset(hd->ccb, 0, (sizeof(struct eata_ccb) * be16_to_cpu(gc->queuesiz)));
709 memset(hd->reads, 0, sizeof(hd->reads));
1da177e4
LT		 710
711 strlcpy(SD(sh)->vendor, &buff[8], sizeof(SD(sh)->vendor));
712 strlcpy(SD(sh)->name, &buff[16], sizeof(SD(sh)->name));
713 SD(sh)->revision[0] = buff[32];
714 SD(sh)->revision[1] = buff[33];
715 SD(sh)->revision[2] = buff[34];
716 SD(sh)->revision[3] = '.';
717 SD(sh)->revision[4] = buff[35];
718 SD(sh)->revision[5] = 0;
719
1a68d41a 720 switch (be32_to_cpu(gc->len)) {
1da177e4
LT		 721 case 0x1c:
722 SD(sh)->EATA_revision = 'a';
723 break;
724 case 0x1e:
725 SD(sh)->EATA_revision = 'b';
726 break;
727 case 0x22:
728 SD(sh)->EATA_revision = 'c';
729 break;
730 case 0x24:
731 SD(sh)->EATA_revision = 'z';
b324f639 732 break;
1da177e4
LT		 733 default:
734 SD(sh)->EATA_revision = '?';
735 }
736
1a68d41a 737 if (be32_to_cpu(gc->len) >= 0x22) {
1da177e4
LT		 738 if (gc->is_PCI)
739 hd->bustype = IS_PCI;
740 else if (gc->is_EISA)
741 hd->bustype = IS_EISA;
742 else
743 hd->bustype = IS_ISA;
744 } else {
745 if (buff[21] == '4')
746 hd->bustype = IS_PCI;
747 else if (buff[21] == '2')
748 hd->bustype = IS_EISA;
749 else
750 hd->bustype = IS_ISA;
751 }
752
753 SD(sh)->cplen = cplen;
754 SD(sh)->cppadlen = cppadlen;
755 SD(sh)->hostid = gc->scsi_id[3];
756 SD(sh)->devflags = 1 << gc->scsi_id[3];
757 SD(sh)->moresupport = gc->MORE_support;
758 sh->unique_id = base;
759 sh->base = base;
760 sh->io_port = base;
761 sh->n_io_port = 9;
762 sh->irq = gc->IRQ;
763 sh->dma_channel = PIO;
764 sh->this_id = gc->scsi_id[3];
765 sh->can_queue = 1;
766 sh->cmd_per_lun = 1;
767 sh->sg_tablesize = SG_ALL;
768
769 hd->channel = 0;
770
1a68d41a
AC		 771 hd->pdev = pci_dev_get(pdev); /* Keep a PCI reference */
772
1da177e4
LT		 773 sh->max_id = 8;
774 sh->max_lun = 8;
775
776 if (gc->SECOND)
777 hd->primary = 0;
778 else
779 hd->primary = 1;
780
1da177e4
LT		 781 hd->next = NULL; /* build a linked list of all HBAs */
782 hd->prev = last_HBA;
783 if (hd->prev != NULL)
784 SD(hd->prev)->next = sh;
785 last_HBA = sh;
786 if (first_HBA == NULL)
787 first_HBA = sh;
788 registered_HBAs++;
789 return (1);
790}
791
792static void find_pio_ISA(struct get_conf *buf)
793{
794 int i;
795
796 for (i = 0; i < MAXISA; i++) {
797 if (!ISAbases[i])
798 continue;
799 if (!get_pio_conf_PIO(ISAbases[i], buf))
800 continue;
1a68d41a 801 if (!register_pio_HBA(ISAbases[i], buf, NULL))
1da177e4
LT		 802 release_region(ISAbases[i], 9);
803 else
804 ISAbases[i] = 0;
805 }
806 return;
807}
808
809static void find_pio_EISA(struct get_conf *buf)
810{
811 u32 base;
812 int i;
813
814#ifdef CHECKPAL
815 u8 pal1, pal2, pal3;
816#endif
817
818 for (i = 0; i < MAXEISA; i++) {
819 if (EISAbases[i]) { /* Still a possibility ? */
820
821 base = 0x1c88 + (i * 0x1000);
822#ifdef CHECKPAL
823 pal1 = inb((u16) base - 8);
824 pal2 = inb((u16) base - 7);
825 pal3 = inb((u16) base - 6);
826
827 if (((pal1 == 0x12) && (pal2 == 0x14)) || ((pal1 == 0x38) && (pal2 == 0xa3) && (pal3 == 0x82)) || ((pal1 == 0x06) && (pal2 == 0x94) && (pal3 == 0x24))) {
828 DBG(DBG_PROBE, printk(KERN_NOTICE "EISA EATA id tags found: " "%x %x %x \n", (int) pal1, (int) pal2, (int) pal3));
829#endif
830 if (get_pio_conf_PIO(base, buf)) {
831 DBG(DBG_PROBE && DBG_EISA, print_pio_config(buf));
832 if (buf->IRQ) {
1a68d41a 833 if (!register_pio_HBA(base, buf, NULL))
1da177e4
LT		 834 release_region(base, 9);
835 } else {
836 printk(KERN_NOTICE "eata_dma: No valid IRQ. HBA " "removed from list\n");
837 release_region(base, 9);
838 }
839 }
840 /* Nothing found here so we take it from the list */
841 EISAbases[i] = 0;
842#ifdef CHECKPAL
843 }
844#endif
845 }
846 }
847 return;
848}
849
850static void find_pio_PCI(struct get_conf *buf)
851{
852#ifndef CONFIG_PCI
853 printk("eata_dma: kernel PCI support not enabled. Skipping scan for PCI HBAs.\n");
854#else
855 struct pci_dev *dev = NULL;
1a68d41a 856 unsigned long base, x;
1da177e4 857
1a68d41a 858 while ((dev = pci_get_device(PCI_VENDOR_ID_DPT, PCI_DEVICE_ID_DPT, dev)) != NULL) {
1da177e4
LT		 859 DBG(DBG_PROBE && DBG_PCI, printk("eata_pio: find_PCI, HBA at %s\n", pci_name(dev)));
860 if (pci_enable_device(dev))
861 continue;
862 pci_set_master(dev);
863 base = pci_resource_flags(dev, 0);
864 if (base & IORESOURCE_MEM) {
865 printk("eata_pio: invalid base address of device %s\n", pci_name(dev));
866 continue;
867 }
868 base = pci_resource_start(dev, 0);
869 /* EISA tag there ? */
870 if ((inb(base) == 0x12) && (inb(base + 1) == 0x14))
871 continue; /* Jep, it's forced, so move on */
872 base += 0x10; /* Now, THIS is the real address */
873 if (base != 0x1f8) {
874 /* We didn't find it in the primary search */
875 if (get_pio_conf_PIO(base, buf)) {
876 if (buf->FORCADR) { /* If the address is forced */
877 release_region(base, 9);
878 continue; /* we'll find it later */
879 }
880
881 /* OK. We made it till here, so we can go now
882 * and register it. We only have to check and
883 * eventually remove it from the EISA and ISA list
884 */
885
1a68d41a 886 if (!register_pio_HBA(base, buf, dev)) {
1da177e4
LT		 887 release_region(base, 9);
888 continue;
889 }
890
891 if (base < 0x1000) {
892 for (x = 0; x < MAXISA; ++x) {
893 if (ISAbases[x] == base) {
894 ISAbases[x] = 0;
895 break;
896 }
897 }
898 } else if ((base & 0x0fff) == 0x0c88) {
899 x = (base >> 12) & 0x0f;
900 EISAbases[x] = 0;
901 }
902 }
903#ifdef CHECK_BLINK
904 else if (check_blink_state(base)) {
905 printk("eata_pio: HBA is in BLINK state.\n" "Consult your HBAs manual to correct this.\n");
906 }
907#endif
908 }
909 }
910#endif /* #ifndef CONFIG_PCI */
911}
912
913static int eata_pio_detect(struct scsi_host_template *tpnt)
914{
915 struct Scsi_Host *HBA_ptr;
916 struct get_conf gc;
917 int i;
918
919 find_pio_PCI(&gc);
920 find_pio_EISA(&gc);
921 find_pio_ISA(&gc);
922
127be355 923 for (i = 0; i < MAXIRQ; i++)
1da177e4 924 if (reg_IRQ[i])
4909cc2b 925 request_irq(i, do_eata_pio_int_handler, 0, "EATA-PIO", NULL);
1da177e4
LT		 926
927 HBA_ptr = first_HBA;
928
929 if (registered_HBAs != 0) {
930 printk("EATA (Extended Attachment) PIO driver version: %d.%d%s\n"
931 "(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);
932
933 printk("Registered HBAs:\n");
934 printk("HBA no. Boardtype: Revis: EATA: Bus: BaseIO: IRQ: Ch: ID: Pr:" " QS: SG: CPL:\n");
935 for (i = 1; i <= registered_HBAs; i++) {
1a68d41a 936 printk("scsi%-2d: %.10s v%s 2.0%c %s %#.4lx %2d %d %d %c"
1da177e4
LT		 937 " %2d %2d %2d\n",
938 HBA_ptr->host_no, SD(HBA_ptr)->name, SD(HBA_ptr)->revision,
939 SD(HBA_ptr)->EATA_revision, (SD(HBA_ptr)->bustype == 'P') ?
940 "PCI " : (SD(HBA_ptr)->bustype == 'E') ? "EISA" : "ISA ",
1a68d41a 941 HBA_ptr->base, HBA_ptr->irq, SD(HBA_ptr)->channel, HBA_ptr->this_id,
1da177e4
LT		 942 SD(HBA_ptr)->primary ? 'Y' : 'N', HBA_ptr->can_queue,
943 HBA_ptr->sg_tablesize, HBA_ptr->cmd_per_lun);
944 HBA_ptr = SD(HBA_ptr)->next;
945 }
946 }
947 return (registered_HBAs);
948}
949
950static struct scsi_host_template driver_template = {
951 .proc_name = "eata_pio",
952 .name = "EATA (Extended Attachment) PIO driver",
8c986544 953 .show_info = eata_pio_show_info,
1da177e4
LT		 954 .detect = eata_pio_detect,
955 .release = eata_pio_release,
956 .queuecommand = eata_pio_queue,
957 .eh_abort_handler = eata_pio_abort,
958 .eh_host_reset_handler = eata_pio_host_reset,
959 .use_clustering = ENABLE_CLUSTERING,
960};
961
962MODULE_AUTHOR("Michael Neuffer, Alfred Arnold");
963MODULE_DESCRIPTION("EATA SCSI PIO driver");
964MODULE_LICENSE("GPL");
965
966#include "scsi_module.c"
Ubuntu Artful kernel mirror