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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 | 72 | static unsigned int ISAbases[MAXISA] = { |
1da177e4 LT |
73 | 0x1F0, 0x170, 0x330, 0x230 |
74 | }; | |
75 | ||
1a68d41a | 76 | static unsigned int ISAirqs[MAXISA] = { |
1da177e4 LT |
77 | 14, 12, 15, 11 |
78 | }; | |
79 | ||
80 | static unsigned char EISAbases[] = { | |
81 | 1, 1, 1, 1, 1, 1, 1, 1, | |
82 | 1, 1, 1, 1, 1, 1, 1, 1 | |
83 | }; | |
84 | ||
1a68d41a | 85 | static unsigned int registered_HBAs; |
1da177e4 LT |
86 | static struct Scsi_Host *last_HBA; |
87 | static struct Scsi_Host *first_HBA; | |
88 | static unsigned char reg_IRQ[16]; | |
89 | static unsigned char reg_IRQL[16]; | |
90 | static unsigned long int_counter; | |
91 | static unsigned long queue_counter; | |
92 | ||
93 | static struct scsi_host_template driver_template; | |
94 | ||
8c986544 | 95 | static 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); |
8c986544 AV |
105 | seq_printf(m, "IO: PIO\n"); |
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 | ||
113 | static 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 | 130 | static 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 | 144 | static irqreturn_t eata_pio_int_handler(int irq, void *dev_id); |
1da177e4 | 145 | |
7d12e780 | 146 | static 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 | 158 | static 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 | 284 | static 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 | 302 | static 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 |
404 | static DEF_SCSI_QCMD(eata_pio_queue) |
405 | ||
1da177e4 LT |
406 | static 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 | ||
438 | static 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 | 512 | static 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 | 563 | static 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 | ||
621 | static 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 | 629 | static 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 | 656 | static 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'; | |
732 | default: | |
733 | SD(sh)->EATA_revision = '?'; | |
734 | } | |
735 | ||
1a68d41a | 736 | if (be32_to_cpu(gc->len) >= 0x22) { |
1da177e4 LT |
737 | if (gc->is_PCI) |
738 | hd->bustype = IS_PCI; | |
739 | else if (gc->is_EISA) | |
740 | hd->bustype = IS_EISA; | |
741 | else | |
742 | hd->bustype = IS_ISA; | |
743 | } else { | |
744 | if (buff[21] == '4') | |
745 | hd->bustype = IS_PCI; | |
746 | else if (buff[21] == '2') | |
747 | hd->bustype = IS_EISA; | |
748 | else | |
749 | hd->bustype = IS_ISA; | |
750 | } | |
751 | ||
752 | SD(sh)->cplen = cplen; | |
753 | SD(sh)->cppadlen = cppadlen; | |
754 | SD(sh)->hostid = gc->scsi_id[3]; | |
755 | SD(sh)->devflags = 1 << gc->scsi_id[3]; | |
756 | SD(sh)->moresupport = gc->MORE_support; | |
757 | sh->unique_id = base; | |
758 | sh->base = base; | |
759 | sh->io_port = base; | |
760 | sh->n_io_port = 9; | |
761 | sh->irq = gc->IRQ; | |
762 | sh->dma_channel = PIO; | |
763 | sh->this_id = gc->scsi_id[3]; | |
764 | sh->can_queue = 1; | |
765 | sh->cmd_per_lun = 1; | |
766 | sh->sg_tablesize = SG_ALL; | |
767 | ||
768 | hd->channel = 0; | |
769 | ||
1a68d41a AC |
770 | hd->pdev = pci_dev_get(pdev); /* Keep a PCI reference */ |
771 | ||
1da177e4 LT |
772 | sh->max_id = 8; |
773 | sh->max_lun = 8; | |
774 | ||
775 | if (gc->SECOND) | |
776 | hd->primary = 0; | |
777 | else | |
778 | hd->primary = 1; | |
779 | ||
1da177e4 LT |
780 | hd->next = NULL; /* build a linked list of all HBAs */ |
781 | hd->prev = last_HBA; | |
782 | if (hd->prev != NULL) | |
783 | SD(hd->prev)->next = sh; | |
784 | last_HBA = sh; | |
785 | if (first_HBA == NULL) | |
786 | first_HBA = sh; | |
787 | registered_HBAs++; | |
788 | return (1); | |
789 | } | |
790 | ||
791 | static void find_pio_ISA(struct get_conf *buf) | |
792 | { | |
793 | int i; | |
794 | ||
795 | for (i = 0; i < MAXISA; i++) { | |
796 | if (!ISAbases[i]) | |
797 | continue; | |
798 | if (!get_pio_conf_PIO(ISAbases[i], buf)) | |
799 | continue; | |
1a68d41a | 800 | if (!register_pio_HBA(ISAbases[i], buf, NULL)) |
1da177e4 LT |
801 | release_region(ISAbases[i], 9); |
802 | else | |
803 | ISAbases[i] = 0; | |
804 | } | |
805 | return; | |
806 | } | |
807 | ||
808 | static void find_pio_EISA(struct get_conf *buf) | |
809 | { | |
810 | u32 base; | |
811 | int i; | |
812 | ||
813 | #ifdef CHECKPAL | |
814 | u8 pal1, pal2, pal3; | |
815 | #endif | |
816 | ||
817 | for (i = 0; i < MAXEISA; i++) { | |
818 | if (EISAbases[i]) { /* Still a possibility ? */ | |
819 | ||
820 | base = 0x1c88 + (i * 0x1000); | |
821 | #ifdef CHECKPAL | |
822 | pal1 = inb((u16) base - 8); | |
823 | pal2 = inb((u16) base - 7); | |
824 | pal3 = inb((u16) base - 6); | |
825 | ||
826 | if (((pal1 == 0x12) && (pal2 == 0x14)) || ((pal1 == 0x38) && (pal2 == 0xa3) && (pal3 == 0x82)) || ((pal1 == 0x06) && (pal2 == 0x94) && (pal3 == 0x24))) { | |
827 | DBG(DBG_PROBE, printk(KERN_NOTICE "EISA EATA id tags found: " "%x %x %x \n", (int) pal1, (int) pal2, (int) pal3)); | |
828 | #endif | |
829 | if (get_pio_conf_PIO(base, buf)) { | |
830 | DBG(DBG_PROBE && DBG_EISA, print_pio_config(buf)); | |
831 | if (buf->IRQ) { | |
1a68d41a | 832 | if (!register_pio_HBA(base, buf, NULL)) |
1da177e4 LT |
833 | release_region(base, 9); |
834 | } else { | |
835 | printk(KERN_NOTICE "eata_dma: No valid IRQ. HBA " "removed from list\n"); | |
836 | release_region(base, 9); | |
837 | } | |
838 | } | |
839 | /* Nothing found here so we take it from the list */ | |
840 | EISAbases[i] = 0; | |
841 | #ifdef CHECKPAL | |
842 | } | |
843 | #endif | |
844 | } | |
845 | } | |
846 | return; | |
847 | } | |
848 | ||
849 | static void find_pio_PCI(struct get_conf *buf) | |
850 | { | |
851 | #ifndef CONFIG_PCI | |
852 | printk("eata_dma: kernel PCI support not enabled. Skipping scan for PCI HBAs.\n"); | |
853 | #else | |
854 | struct pci_dev *dev = NULL; | |
1a68d41a | 855 | unsigned long base, x; |
1da177e4 | 856 | |
1a68d41a | 857 | while ((dev = pci_get_device(PCI_VENDOR_ID_DPT, PCI_DEVICE_ID_DPT, dev)) != NULL) { |
1da177e4 LT |
858 | DBG(DBG_PROBE && DBG_PCI, printk("eata_pio: find_PCI, HBA at %s\n", pci_name(dev))); |
859 | if (pci_enable_device(dev)) | |
860 | continue; | |
861 | pci_set_master(dev); | |
862 | base = pci_resource_flags(dev, 0); | |
863 | if (base & IORESOURCE_MEM) { | |
864 | printk("eata_pio: invalid base address of device %s\n", pci_name(dev)); | |
865 | continue; | |
866 | } | |
867 | base = pci_resource_start(dev, 0); | |
868 | /* EISA tag there ? */ | |
869 | if ((inb(base) == 0x12) && (inb(base + 1) == 0x14)) | |
870 | continue; /* Jep, it's forced, so move on */ | |
871 | base += 0x10; /* Now, THIS is the real address */ | |
872 | if (base != 0x1f8) { | |
873 | /* We didn't find it in the primary search */ | |
874 | if (get_pio_conf_PIO(base, buf)) { | |
875 | if (buf->FORCADR) { /* If the address is forced */ | |
876 | release_region(base, 9); | |
877 | continue; /* we'll find it later */ | |
878 | } | |
879 | ||
880 | /* OK. We made it till here, so we can go now | |
881 | * and register it. We only have to check and | |
882 | * eventually remove it from the EISA and ISA list | |
883 | */ | |
884 | ||
1a68d41a | 885 | if (!register_pio_HBA(base, buf, dev)) { |
1da177e4 LT |
886 | release_region(base, 9); |
887 | continue; | |
888 | } | |
889 | ||
890 | if (base < 0x1000) { | |
891 | for (x = 0; x < MAXISA; ++x) { | |
892 | if (ISAbases[x] == base) { | |
893 | ISAbases[x] = 0; | |
894 | break; | |
895 | } | |
896 | } | |
897 | } else if ((base & 0x0fff) == 0x0c88) { | |
898 | x = (base >> 12) & 0x0f; | |
899 | EISAbases[x] = 0; | |
900 | } | |
901 | } | |
902 | #ifdef CHECK_BLINK | |
903 | else if (check_blink_state(base)) { | |
904 | printk("eata_pio: HBA is in BLINK state.\n" "Consult your HBAs manual to correct this.\n"); | |
905 | } | |
906 | #endif | |
907 | } | |
908 | } | |
909 | #endif /* #ifndef CONFIG_PCI */ | |
910 | } | |
911 | ||
912 | static int eata_pio_detect(struct scsi_host_template *tpnt) | |
913 | { | |
914 | struct Scsi_Host *HBA_ptr; | |
915 | struct get_conf gc; | |
916 | int i; | |
917 | ||
918 | find_pio_PCI(&gc); | |
919 | find_pio_EISA(&gc); | |
920 | find_pio_ISA(&gc); | |
921 | ||
127be355 | 922 | for (i = 0; i < MAXIRQ; i++) |
1da177e4 | 923 | if (reg_IRQ[i]) |
4909cc2b | 924 | request_irq(i, do_eata_pio_int_handler, 0, "EATA-PIO", NULL); |
1da177e4 LT |
925 | |
926 | HBA_ptr = first_HBA; | |
927 | ||
928 | if (registered_HBAs != 0) { | |
929 | printk("EATA (Extended Attachment) PIO driver version: %d.%d%s\n" | |
930 | "(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); | |
931 | ||
932 | printk("Registered HBAs:\n"); | |
933 | printk("HBA no. Boardtype: Revis: EATA: Bus: BaseIO: IRQ: Ch: ID: Pr:" " QS: SG: CPL:\n"); | |
934 | for (i = 1; i <= registered_HBAs; i++) { | |
1a68d41a | 935 | printk("scsi%-2d: %.10s v%s 2.0%c %s %#.4lx %2d %d %d %c" |
1da177e4 LT |
936 | " %2d %2d %2d\n", |
937 | HBA_ptr->host_no, SD(HBA_ptr)->name, SD(HBA_ptr)->revision, | |
938 | SD(HBA_ptr)->EATA_revision, (SD(HBA_ptr)->bustype == 'P') ? | |
939 | "PCI " : (SD(HBA_ptr)->bustype == 'E') ? "EISA" : "ISA ", | |
1a68d41a | 940 | HBA_ptr->base, HBA_ptr->irq, SD(HBA_ptr)->channel, HBA_ptr->this_id, |
1da177e4 LT |
941 | SD(HBA_ptr)->primary ? 'Y' : 'N', HBA_ptr->can_queue, |
942 | HBA_ptr->sg_tablesize, HBA_ptr->cmd_per_lun); | |
943 | HBA_ptr = SD(HBA_ptr)->next; | |
944 | } | |
945 | } | |
946 | return (registered_HBAs); | |
947 | } | |
948 | ||
949 | static struct scsi_host_template driver_template = { | |
950 | .proc_name = "eata_pio", | |
951 | .name = "EATA (Extended Attachment) PIO driver", | |
8c986544 | 952 | .show_info = eata_pio_show_info, |
1da177e4 LT |
953 | .detect = eata_pio_detect, |
954 | .release = eata_pio_release, | |
955 | .queuecommand = eata_pio_queue, | |
956 | .eh_abort_handler = eata_pio_abort, | |
957 | .eh_host_reset_handler = eata_pio_host_reset, | |
958 | .use_clustering = ENABLE_CLUSTERING, | |
959 | }; | |
960 | ||
961 | MODULE_AUTHOR("Michael Neuffer, Alfred Arnold"); | |
962 | MODULE_DESCRIPTION("EATA SCSI PIO driver"); | |
963 | MODULE_LICENSE("GPL"); | |
964 | ||
965 | #include "scsi_module.c" |