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1 | /* $Id: aha1542.c,v 1.1 1992/07/24 06:27:38 root Exp root $ |
2 | * linux/kernel/aha1542.c |
3 | * |
4 | * Copyright (C) 1992 Tommy Thorn |
5 | * Copyright (C) 1993, 1994, 1995 Eric Youngdale |
6 | * |
7 | * Modified by Eric Youngdale |
8 | * Use request_irq and request_dma to help prevent unexpected conflicts |
9 | * Set up on-board DMA controller, such that we do not have to |
10 | * have the bios enabled to use the aha1542. |
11 | * Modified by David Gentzel |
12 | * Don't call request_dma if dma mask is 0 (for BusLogic BT-445S VL-Bus |
13 | * controller). |
14 | * Modified by Matti Aarnio |
15 | * Accept parameters from LILO cmd-line. -- 1-Oct-94 |
16 | * Modified by Mike McLagan <mike.mclagan@linux.org> |
17 | * Recognise extended mode on AHA1542CP, different bit than 1542CF |
18 | * 1-Jan-97 |
19 | * Modified by Bjorn L. Thordarson and Einar Thor Einarsson |
20 | * Recognize that DMA0 is valid DMA channel -- 13-Jul-98 |
21 | * Modified by Chris Faulhaber <jedgar@fxp.org> |
22 | * Added module command-line options |
23 | * 19-Jul-99 |
24 | * Modified by Adam Fritzler |
25 | * Added proper detection of the AHA-1640 (MCA, now deleted) |
26 | */ |
27 | |
28 | #include <linux/module.h> |
29 | #include <linux/interrupt.h> |
30 | #include <linux/kernel.h> |
31 | #include <linux/types.h> |
32 | #include <linux/string.h> |
33 | #include <linux/ioport.h> |
34 | #include <linux/delay.h> |
35 | #include <linux/proc_fs.h> |
36 | #include <linux/init.h> |
37 | #include <linux/spinlock.h> |
38 | #include <linux/isapnp.h> |
39 | #include <linux/blkdev.h> |
40 | #include <linux/slab.h> |
41 | |
42 | #include <asm/dma.h> |
43 | #include <asm/io.h> |
44 | |
45 | #include "scsi.h" |
46 | #include <scsi/scsi_host.h> |
47 | #include "aha1542.h" |
48 | |
49 | #define SCSI_BUF_PA(address) isa_virt_to_bus(address) |
50 | #define SCSI_SG_PA(sgent) (isa_page_to_bus(sg_page((sgent))) + (sgent)->offset) |
51 | |
52 | #include <linux/stat.h> |
53 | |
54 | #ifdef DEBUG |
55 | #define DEB(x) x |
56 | #else |
57 | #define DEB(x) |
58 | #endif |
59 | |
60 | /* |
61 | static const char RCSid[] = "$Header: /usr/src/linux/kernel/blk_drv/scsi/RCS/aha1542.c,v 1.1 1992/07/24 06:27:38 root Exp root $"; |
62 | */ |
63 | |
64 | /* The adaptec can be configured for quite a number of addresses, but |
65 | I generally do not want the card poking around at random. We allow |
66 | two addresses - this allows people to use the Adaptec with a Midi |
67 | card, which also used 0x330 -- can be overridden with LILO! */ |
68 | |
69 | #define MAXBOARDS 4 /* Increase this and the sizes of the |
70 | arrays below, if you need more.. */ |
71 | |
72 | /* Boards 3,4 slots are reserved for ISAPnP scans */ |
73 | |
74 | static unsigned int bases[MAXBOARDS] __initdata = {0x330, 0x334, 0, 0}; |
75 | |
76 | /* set by aha1542_setup according to the command line; they also may |
77 | be marked __initdata, but require zero initializers then */ |
78 | |
79 | static int setup_called[MAXBOARDS]; |
80 | static int setup_buson[MAXBOARDS]; |
81 | static int setup_busoff[MAXBOARDS]; |
82 | static int setup_dmaspeed[MAXBOARDS] __initdata = { -1, -1, -1, -1 }; |
83 | |
84 | /* |
85 | * LILO/Module params: aha1542=<PORTBASE>[,<BUSON>,<BUSOFF>[,<DMASPEED>]] |
86 | * |
87 | * Where: <PORTBASE> is any of the valid AHA addresses: |
88 | * 0x130, 0x134, 0x230, 0x234, 0x330, 0x334 |
89 | * <BUSON> is the time (in microsecs) that AHA spends on the AT-bus |
90 | * when transferring data. 1542A power-on default is 11us, |
91 | * valid values are in range: 2..15 (decimal) |
92 | * <BUSOFF> is the time that AHA spends OFF THE BUS after while |
93 | * it is transferring data (not to monopolize the bus). |
94 | * Power-on default is 4us, valid range: 1..64 microseconds. |
95 | * <DMASPEED> Default is jumper selected (1542A: on the J1), |
96 | * but experimenter can alter it with this. |
97 | * Valid values: 5, 6, 7, 8, 10 (MB/s) |
98 | * Factory default is 5 MB/s. |
99 | */ |
100 | |
101 | #if defined(MODULE) |
102 | static bool isapnp = 0; |
103 | static int aha1542[] = {0x330, 11, 4, -1}; |
104 | module_param_array(aha1542, int, NULL, 0); |
105 | module_param(isapnp, bool, 0); |
106 | |
107 | static struct isapnp_device_id id_table[] __initdata = { |
108 | { |
109 | ISAPNP_ANY_ID, ISAPNP_ANY_ID, |
110 | ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1542), |
111 | 0 |
112 | }, |
113 | {0} |
114 | }; |
115 | |
116 | MODULE_DEVICE_TABLE(isapnp, id_table); |
117 | |
118 | #else |
119 | static int isapnp = 1; |
120 | #endif |
121 | |
122 | #define BIOS_TRANSLATION_1632 0 /* Used by some old 1542A boards */ |
123 | #define BIOS_TRANSLATION_6432 1 /* Default case these days */ |
124 | #define BIOS_TRANSLATION_25563 2 /* Big disk case */ |
125 | |
126 | struct aha1542_hostdata { |
127 | /* This will effectively start both of them at the first mailbox */ |
128 | int bios_translation; /* Mapping bios uses - for compatibility */ |
129 | int aha1542_last_mbi_used; |
130 | int aha1542_last_mbo_used; |
131 | Scsi_Cmnd *SCint[AHA1542_MAILBOXES]; |
132 | struct mailbox mb[2 * AHA1542_MAILBOXES]; |
133 | struct ccb ccb[AHA1542_MAILBOXES]; |
134 | }; |
135 | |
136 | #define HOSTDATA(host) ((struct aha1542_hostdata *) &host->hostdata) |
137 | |
138 | static DEFINE_SPINLOCK(aha1542_lock); |
139 | |
140 | |
141 | |
142 | #define WAITnexttimeout 3000000 |
143 | |
144 | static void setup_mailboxes(int base_io, struct Scsi_Host *shpnt); |
145 | static int aha1542_restart(struct Scsi_Host *shost); |
146 | static void aha1542_intr_handle(struct Scsi_Host *shost); |
147 | |
148 | #define aha1542_intr_reset(base) outb(IRST, CONTROL(base)) |
149 | |
150 | #define WAIT(port, mask, allof, noneof) \ |
151 | { register int WAITbits; \ |
152 | register int WAITtimeout = WAITnexttimeout; \ |
153 | while (1) { \ |
154 | WAITbits = inb(port) & (mask); \ |
155 | if ((WAITbits & (allof)) == (allof) && ((WAITbits & (noneof)) == 0)) \ |
156 | break; \ |
157 | if (--WAITtimeout == 0) goto fail; \ |
158 | } \ |
159 | } |
160 | |
161 | /* Similar to WAIT, except we use the udelay call to regulate the |
162 | amount of time we wait. */ |
163 | #define WAITd(port, mask, allof, noneof, timeout) \ |
164 | { register int WAITbits; \ |
165 | register int WAITtimeout = timeout; \ |
166 | while (1) { \ |
167 | WAITbits = inb(port) & (mask); \ |
168 | if ((WAITbits & (allof)) == (allof) && ((WAITbits & (noneof)) == 0)) \ |
169 | break; \ |
170 | mdelay(1); \ |
171 | if (--WAITtimeout == 0) goto fail; \ |
172 | } \ |
173 | } |
174 | |
175 | static void aha1542_stat(void) |
176 | { |
177 | /* int s = inb(STATUS), i = inb(INTRFLAGS); |
178 | printk("status=%x intrflags=%x\n", s, i, WAITnexttimeout-WAITtimeout); */ |
179 | } |
180 | |
181 | /* This is a bit complicated, but we need to make sure that an interrupt |
182 | routine does not send something out while we are in the middle of this. |
183 | Fortunately, it is only at boot time that multi-byte messages |
184 | are ever sent. */ |
185 | static int aha1542_out(unsigned int base, unchar * cmdp, int len) |
186 | { |
187 | unsigned long flags = 0; |
188 | int got_lock; |
189 | |
190 | if (len == 1) { |
191 | got_lock = 0; |
192 | while (1 == 1) { |
193 | WAIT(STATUS(base), CDF, 0, CDF); |
194 | spin_lock_irqsave(&aha1542_lock, flags); |
195 | if (inb(STATUS(base)) & CDF) { |
196 | spin_unlock_irqrestore(&aha1542_lock, flags); |
197 | continue; |
198 | } |
199 | outb(*cmdp, DATA(base)); |
200 | spin_unlock_irqrestore(&aha1542_lock, flags); |
201 | return 0; |
202 | } |
203 | } else { |
204 | spin_lock_irqsave(&aha1542_lock, flags); |
205 | got_lock = 1; |
206 | while (len--) { |
207 | WAIT(STATUS(base), CDF, 0, CDF); |
208 | outb(*cmdp++, DATA(base)); |
209 | } |
210 | spin_unlock_irqrestore(&aha1542_lock, flags); |
211 | } |
212 | return 0; |
213 | fail: |
214 | if (got_lock) |
215 | spin_unlock_irqrestore(&aha1542_lock, flags); |
216 | printk(KERN_ERR "aha1542_out failed(%d): ", len + 1); |
217 | aha1542_stat(); |
218 | return 1; |
219 | } |
220 | |
221 | /* Only used at boot time, so we do not need to worry about latency as much |
222 | here */ |
223 | |
224 | static int __init aha1542_in(unsigned int base, unchar * cmdp, int len) |
225 | { |
226 | unsigned long flags; |
227 | |
228 | spin_lock_irqsave(&aha1542_lock, flags); |
229 | while (len--) { |
230 | WAIT(STATUS(base), DF, DF, 0); |
231 | *cmdp++ = inb(DATA(base)); |
232 | } |
233 | spin_unlock_irqrestore(&aha1542_lock, flags); |
234 | return 0; |
235 | fail: |
236 | spin_unlock_irqrestore(&aha1542_lock, flags); |
237 | printk(KERN_ERR "aha1542_in failed(%d): ", len + 1); |
238 | aha1542_stat(); |
239 | return 1; |
240 | } |
241 | |
242 | /* Similar to aha1542_in, except that we wait a very short period of time. |
243 | We use this if we know the board is alive and awake, but we are not sure |
244 | if the board will respond to the command we are about to send or not */ |
245 | static int __init aha1542_in1(unsigned int base, unchar * cmdp, int len) |
246 | { |
247 | unsigned long flags; |
248 | |
249 | spin_lock_irqsave(&aha1542_lock, flags); |
250 | while (len--) { |
251 | WAITd(STATUS(base), DF, DF, 0, 100); |
252 | *cmdp++ = inb(DATA(base)); |
253 | } |
254 | spin_unlock_irqrestore(&aha1542_lock, flags); |
255 | return 0; |
256 | fail: |
257 | spin_unlock_irqrestore(&aha1542_lock, flags); |
258 | return 1; |
259 | } |
260 | |
261 | static int makecode(unsigned hosterr, unsigned scsierr) |
262 | { |
263 | switch (hosterr) { |
264 | case 0x0: |
265 | case 0xa: /* Linked command complete without error and linked normally */ |
266 | case 0xb: /* Linked command complete without error, interrupt generated */ |
267 | hosterr = 0; |
268 | break; |
269 | |
270 | case 0x11: /* Selection time out-The initiator selection or target |
271 | reselection was not complete within the SCSI Time out period */ |
272 | hosterr = DID_TIME_OUT; |
273 | break; |
274 | |
275 | case 0x12: /* Data overrun/underrun-The target attempted to transfer more data |
276 | than was allocated by the Data Length field or the sum of the |
277 | Scatter / Gather Data Length fields. */ |
278 | |
279 | case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */ |
280 | |
281 | case 0x15: /* MBO command was not 00, 01 or 02-The first byte of the CB was |
282 | invalid. This usually indicates a software failure. */ |
283 | |
284 | case 0x16: /* Invalid CCB Operation Code-The first byte of the CCB was invalid. |
285 | This usually indicates a software failure. */ |
286 | |
287 | case 0x17: /* Linked CCB does not have the same LUN-A subsequent CCB of a set |
288 | of linked CCB's does not specify the same logical unit number as |
289 | the first. */ |
290 | case 0x18: /* Invalid Target Direction received from Host-The direction of a |
291 | Target Mode CCB was invalid. */ |
292 | |
293 | case 0x19: /* Duplicate CCB Received in Target Mode-More than once CCB was |
294 | received to service data transfer between the same target LUN |
295 | and initiator SCSI ID in the same direction. */ |
296 | |
297 | case 0x1a: /* Invalid CCB or Segment List Parameter-A segment list with a zero |
298 | length segment or invalid segment list boundaries was received. |
299 | A CCB parameter was invalid. */ |
300 | DEB(printk("Aha1542: %x %x\n", hosterr, scsierr)); |
301 | hosterr = DID_ERROR; /* Couldn't find any better */ |
302 | break; |
303 | |
304 | case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus |
305 | phase sequence was requested by the target. The host adapter |
306 | will generate a SCSI Reset Condition, notifying the host with |
307 | a SCRD interrupt */ |
308 | hosterr = DID_RESET; |
309 | break; |
310 | default: |
311 | printk(KERN_ERR "aha1542: makecode: unknown hoststatus %x\n", hosterr); |
312 | break; |
313 | } |
314 | return scsierr | (hosterr << 16); |
315 | } |
316 | |
317 | static int __init aha1542_test_port(int bse, struct Scsi_Host *shpnt) |
318 | { |
319 | unchar inquiry_cmd[] = {CMD_INQUIRY}; |
320 | unchar inquiry_result[4]; |
321 | unchar *cmdp; |
322 | int len; |
323 | volatile int debug = 0; |
324 | |
325 | /* Quick and dirty test for presence of the card. */ |
326 | if (inb(STATUS(bse)) == 0xff) |
327 | return 0; |
328 | |
329 | /* Reset the adapter. I ought to make a hard reset, but it's not really necessary */ |
330 | |
331 | /* DEB(printk("aha1542_test_port called \n")); */ |
332 | |
333 | /* In case some other card was probing here, reset interrupts */ |
334 | aha1542_intr_reset(bse); /* reset interrupts, so they don't block */ |
335 | |
336 | outb(SRST | IRST /*|SCRST */ , CONTROL(bse)); |
337 | |
338 | mdelay(20); /* Wait a little bit for things to settle down. */ |
339 | |
340 | debug = 1; |
341 | /* Expect INIT and IDLE, any of the others are bad */ |
342 | WAIT(STATUS(bse), STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); |
343 | |
344 | debug = 2; |
345 | /* Shouldn't have generated any interrupts during reset */ |
346 | if (inb(INTRFLAGS(bse)) & INTRMASK) |
347 | goto fail; |
348 | |
349 | |
350 | /* Perform a host adapter inquiry instead so we do not need to set |
351 | up the mailboxes ahead of time */ |
352 | |
353 | aha1542_out(bse, inquiry_cmd, 1); |
354 | |
355 | debug = 3; |
356 | len = 4; |
357 | cmdp = &inquiry_result[0]; |
358 | |
359 | while (len--) { |
360 | WAIT(STATUS(bse), DF, DF, 0); |
361 | *cmdp++ = inb(DATA(bse)); |
362 | } |
363 | |
364 | debug = 8; |
365 | /* Reading port should reset DF */ |
366 | if (inb(STATUS(bse)) & DF) |
367 | goto fail; |
368 | |
369 | debug = 9; |
370 | /* When HACC, command is completed, and we're though testing */ |
371 | WAIT(INTRFLAGS(bse), HACC, HACC, 0); |
372 | /* now initialize adapter */ |
373 | |
374 | debug = 10; |
375 | /* Clear interrupts */ |
376 | outb(IRST, CONTROL(bse)); |
377 | |
378 | debug = 11; |
379 | |
380 | return debug; /* 1 = ok */ |
381 | fail: |
382 | return 0; /* 0 = not ok */ |
383 | } |
384 | |
385 | /* A quick wrapper for do_aha1542_intr_handle to grab the spin lock */ |
386 | static irqreturn_t do_aha1542_intr_handle(int dummy, void *dev_id) |
387 | { |
388 | unsigned long flags; |
389 | struct Scsi_Host *shost = dev_id; |
390 | |
391 | spin_lock_irqsave(shost->host_lock, flags); |
392 | aha1542_intr_handle(shost); |
393 | spin_unlock_irqrestore(shost->host_lock, flags); |
394 | return IRQ_HANDLED; |
395 | } |
396 | |
397 | /* A "high" level interrupt handler */ |
398 | static void aha1542_intr_handle(struct Scsi_Host *shost) |
399 | { |
400 | void (*my_done) (Scsi_Cmnd *) = NULL; |
401 | int errstatus, mbi, mbo, mbistatus; |
402 | int number_serviced; |
403 | unsigned long flags; |
404 | Scsi_Cmnd *SCtmp; |
405 | int flag; |
406 | int needs_restart; |
407 | struct mailbox *mb; |
408 | struct ccb *ccb; |
409 | |
410 | mb = HOSTDATA(shost)->mb; |
411 | ccb = HOSTDATA(shost)->ccb; |
412 | |
413 | #ifdef DEBUG |
414 | { |
415 | flag = inb(INTRFLAGS(shost->io_port)); |
416 | printk(KERN_DEBUG "aha1542_intr_handle: "); |
417 | if (!(flag & ANYINTR)) |
418 | printk("no interrupt?"); |
419 | if (flag & MBIF) |
420 | printk("MBIF "); |
421 | if (flag & MBOA) |
422 | printk("MBOF "); |
423 | if (flag & HACC) |
424 | printk("HACC "); |
425 | if (flag & SCRD) |
426 | printk("SCRD "); |
427 | printk("status %02x\n", inb(STATUS(shost->io_port))); |
428 | }; |
429 | #endif |
430 | number_serviced = 0; |
431 | needs_restart = 0; |
432 | |
433 | while (1 == 1) { |
434 | flag = inb(INTRFLAGS(shost->io_port)); |
435 | |
436 | /* Check for unusual interrupts. If any of these happen, we should |
437 | probably do something special, but for now just printing a message |
438 | is sufficient. A SCSI reset detected is something that we really |
439 | need to deal with in some way. */ |
440 | if (flag & ~MBIF) { |
441 | if (flag & MBOA) |
442 | printk("MBOF "); |
443 | if (flag & HACC) |
444 | printk("HACC "); |
445 | if (flag & SCRD) { |
446 | needs_restart = 1; |
447 | printk("SCRD "); |
448 | } |
449 | } |
450 | aha1542_intr_reset(shost->io_port); |
451 | |
452 | spin_lock_irqsave(&aha1542_lock, flags); |
453 | mbi = HOSTDATA(shost)->aha1542_last_mbi_used + 1; |
454 | if (mbi >= 2 * AHA1542_MAILBOXES) |
455 | mbi = AHA1542_MAILBOXES; |
456 | |
457 | do { |
458 | if (mb[mbi].status != 0) |
459 | break; |
460 | mbi++; |
461 | if (mbi >= 2 * AHA1542_MAILBOXES) |
462 | mbi = AHA1542_MAILBOXES; |
463 | } while (mbi != HOSTDATA(shost)->aha1542_last_mbi_used); |
464 | |
465 | if (mb[mbi].status == 0) { |
466 | spin_unlock_irqrestore(&aha1542_lock, flags); |
467 | /* Hmm, no mail. Must have read it the last time around */ |
468 | if (!number_serviced && !needs_restart) |
469 | printk(KERN_WARNING "aha1542.c: interrupt received, but no mail.\n"); |
470 | /* We detected a reset. Restart all pending commands for |
471 | devices that use the hard reset option */ |
472 | if (needs_restart) |
473 | aha1542_restart(shost); |
474 | return; |
475 | }; |
476 | |
477 | mbo = (scsi2int(mb[mbi].ccbptr) - (SCSI_BUF_PA(&ccb[0]))) / sizeof(struct ccb); |
478 | mbistatus = mb[mbi].status; |
479 | mb[mbi].status = 0; |
480 | HOSTDATA(shost)->aha1542_last_mbi_used = mbi; |
481 | spin_unlock_irqrestore(&aha1542_lock, flags); |
482 | |
483 | #ifdef DEBUG |
484 | { |
485 | if (ccb[mbo].tarstat | ccb[mbo].hastat) |
486 | printk(KERN_DEBUG "aha1542_command: returning %x (status %d)\n", |
487 | ccb[mbo].tarstat + ((int) ccb[mbo].hastat << 16), mb[mbi].status); |
488 | }; |
489 | #endif |
490 | |
491 | if (mbistatus == 3) |
492 | continue; /* Aborted command not found */ |
493 | |
494 | #ifdef DEBUG |
495 | printk(KERN_DEBUG "...done %d %d\n", mbo, mbi); |
496 | #endif |
497 | |
498 | SCtmp = HOSTDATA(shost)->SCint[mbo]; |
499 | |
500 | if (!SCtmp || !SCtmp->scsi_done) { |
501 | printk(KERN_WARNING "aha1542_intr_handle: Unexpected interrupt\n"); |
502 | printk(KERN_WARNING "tarstat=%x, hastat=%x idlun=%x ccb#=%d \n", ccb[mbo].tarstat, |
503 | ccb[mbo].hastat, ccb[mbo].idlun, mbo); |
504 | return; |
505 | } |
506 | my_done = SCtmp->scsi_done; |
507 | kfree(SCtmp->host_scribble); |
508 | SCtmp->host_scribble = NULL; |
509 | /* Fetch the sense data, and tuck it away, in the required slot. The |
510 | Adaptec automatically fetches it, and there is no guarantee that |
511 | we will still have it in the cdb when we come back */ |
512 | if (ccb[mbo].tarstat == 2) |
513 | memcpy(SCtmp->sense_buffer, &ccb[mbo].cdb[ccb[mbo].cdblen], |
514 | SCSI_SENSE_BUFFERSIZE); |
515 | |
516 | |
517 | /* is there mail :-) */ |
518 | |
519 | /* more error checking left out here */ |
520 | if (mbistatus != 1) |
521 | /* This is surely wrong, but I don't know what's right */ |
522 | errstatus = makecode(ccb[mbo].hastat, ccb[mbo].tarstat); |
523 | else |
524 | errstatus = 0; |
525 | |
526 | #ifdef DEBUG |
527 | if (errstatus) |
528 | printk(KERN_DEBUG "(aha1542 error:%x %x %x) ", errstatus, |
529 | ccb[mbo].hastat, ccb[mbo].tarstat); |
530 | #endif |
531 | |
532 | if (ccb[mbo].tarstat == 2) { |
533 | #ifdef DEBUG |
534 | int i; |
535 | #endif |
536 | DEB(printk("aha1542_intr_handle: sense:")); |
537 | #ifdef DEBUG |
538 | for (i = 0; i < 12; i++) |
539 | printk("%02x ", ccb[mbo].cdb[ccb[mbo].cdblen + i]); |
540 | printk("\n"); |
541 | #endif |
542 | /* |
543 | DEB(printk("aha1542_intr_handle: buf:")); |
544 | for (i = 0; i < bufflen; i++) |
545 | printk("%02x ", ((unchar *)buff)[i]); |
546 | printk("\n"); |
547 | */ |
548 | } |
549 | DEB(if (errstatus) printk("aha1542_intr_handle: returning %6x\n", errstatus)); |
550 | SCtmp->result = errstatus; |
551 | HOSTDATA(shost)->SCint[mbo] = NULL; /* This effectively frees up the mailbox slot, as |
552 | far as queuecommand is concerned */ |
553 | my_done(SCtmp); |
554 | number_serviced++; |
555 | }; |
556 | } |
557 | |
558 | static int aha1542_queuecommand_lck(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *)) |
559 | { |
560 | unchar ahacmd = CMD_START_SCSI; |
561 | unchar direction; |
562 | unchar *cmd = (unchar *) SCpnt->cmnd; |
563 | unchar target = SCpnt->device->id; |
564 | unchar lun = SCpnt->device->lun; |
565 | unsigned long flags; |
566 | int bufflen = scsi_bufflen(SCpnt); |
567 | int mbo; |
568 | struct mailbox *mb; |
569 | struct ccb *ccb; |
570 | |
571 | DEB(int i); |
572 | |
573 | mb = HOSTDATA(SCpnt->device->host)->mb; |
574 | ccb = HOSTDATA(SCpnt->device->host)->ccb; |
575 | |
576 | DEB(if (target > 1) { |
577 | SCpnt->result = DID_TIME_OUT << 16; |
578 | done(SCpnt); return 0; |
579 | } |
580 | ); |
581 | |
582 | if (*cmd == REQUEST_SENSE) { |
583 | /* Don't do the command - we have the sense data already */ |
584 | #if 0 |
585 | /* scsi_request_sense() provides a buffer of size 256, |
586 | so there is no reason to expect equality */ |
587 | if (bufflen != SCSI_SENSE_BUFFERSIZE) |
588 | printk(KERN_CRIT "aha1542: Wrong buffer length supplied " |
589 | "for request sense (%d)\n", bufflen); |
590 | #endif |
591 | SCpnt->result = 0; |
592 | done(SCpnt); |
593 | return 0; |
594 | } |
595 | #ifdef DEBUG |
596 | if (*cmd == READ_10 || *cmd == WRITE_10) |
597 | i = xscsi2int(cmd + 2); |
598 | else if (*cmd == READ_6 || *cmd == WRITE_6) |
599 | i = scsi2int(cmd + 2); |
600 | else |
601 | i = -1; |
602 | if (done) |
603 | printk(KERN_DEBUG "aha1542_queuecommand: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen); |
604 | else |
605 | printk(KERN_DEBUG "aha1542_command: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen); |
606 | aha1542_stat(); |
607 | printk(KERN_DEBUG "aha1542_queuecommand: dumping scsi cmd:"); |
608 | for (i = 0; i < SCpnt->cmd_len; i++) |
609 | printk("%02x ", cmd[i]); |
610 | printk("\n"); |
611 | if (*cmd == WRITE_10 || *cmd == WRITE_6) |
612 | return 0; /* we are still testing, so *don't* write */ |
613 | #endif |
614 | /* Use the outgoing mailboxes in a round-robin fashion, because this |
615 | is how the host adapter will scan for them */ |
616 | |
617 | spin_lock_irqsave(&aha1542_lock, flags); |
618 | mbo = HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used + 1; |
619 | if (mbo >= AHA1542_MAILBOXES) |
620 | mbo = 0; |
621 | |
622 | do { |
623 | if (mb[mbo].status == 0 && HOSTDATA(SCpnt->device->host)->SCint[mbo] == NULL) |
624 | break; |
625 | mbo++; |
626 | if (mbo >= AHA1542_MAILBOXES) |
627 | mbo = 0; |
628 | } while (mbo != HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used); |
629 | |
630 | if (mb[mbo].status || HOSTDATA(SCpnt->device->host)->SCint[mbo]) |
631 | panic("Unable to find empty mailbox for aha1542.\n"); |
632 | |
633 | HOSTDATA(SCpnt->device->host)->SCint[mbo] = SCpnt; /* This will effectively prevent someone else from |
634 | screwing with this cdb. */ |
635 | |
636 | HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used = mbo; |
637 | spin_unlock_irqrestore(&aha1542_lock, flags); |
638 | |
639 | #ifdef DEBUG |
640 | printk(KERN_DEBUG "Sending command (%d %x)...", mbo, done); |
641 | #endif |
642 | |
643 | any2scsi(mb[mbo].ccbptr, SCSI_BUF_PA(&ccb[mbo])); /* This gets trashed for some reason */ |
644 | |
645 | memset(&ccb[mbo], 0, sizeof(struct ccb)); |
646 | |
647 | ccb[mbo].cdblen = SCpnt->cmd_len; |
648 | |
649 | direction = 0; |
650 | if (*cmd == READ_10 || *cmd == READ_6) |
651 | direction = 8; |
652 | else if (*cmd == WRITE_10 || *cmd == WRITE_6) |
653 | direction = 16; |
654 | |
655 | memcpy(ccb[mbo].cdb, cmd, ccb[mbo].cdblen); |
656 | |
657 | if (bufflen) { |
658 | struct scatterlist *sg; |
659 | struct chain *cptr; |
660 | #ifdef DEBUG |
661 | unsigned char *ptr; |
662 | #endif |
663 | int i, sg_count = scsi_sg_count(SCpnt); |
664 | ccb[mbo].op = 2; /* SCSI Initiator Command w/scatter-gather */ |
665 | SCpnt->host_scribble = kmalloc(sizeof(*cptr)*sg_count, |
666 | GFP_KERNEL | GFP_DMA); |
667 | cptr = (struct chain *) SCpnt->host_scribble; |
668 | if (cptr == NULL) { |
669 | /* free the claimed mailbox slot */ |
670 | HOSTDATA(SCpnt->device->host)->SCint[mbo] = NULL; |
671 | return SCSI_MLQUEUE_HOST_BUSY; |
672 | } |
673 | scsi_for_each_sg(SCpnt, sg, sg_count, i) { |
674 | any2scsi(cptr[i].dataptr, SCSI_SG_PA(sg)); |
675 | any2scsi(cptr[i].datalen, sg->length); |
676 | }; |
677 | any2scsi(ccb[mbo].datalen, sg_count * sizeof(struct chain)); |
678 | any2scsi(ccb[mbo].dataptr, SCSI_BUF_PA(cptr)); |
679 | #ifdef DEBUG |
680 | printk("cptr %x: ", cptr); |
681 | ptr = (unsigned char *) cptr; |
682 | for (i = 0; i < 18; i++) |
683 | printk("%02x ", ptr[i]); |
684 | #endif |
685 | } else { |
686 | ccb[mbo].op = 0; /* SCSI Initiator Command */ |
687 | SCpnt->host_scribble = NULL; |
688 | any2scsi(ccb[mbo].datalen, 0); |
689 | any2scsi(ccb[mbo].dataptr, 0); |
690 | }; |
691 | ccb[mbo].idlun = (target & 7) << 5 | direction | (lun & 7); /*SCSI Target Id */ |
692 | ccb[mbo].rsalen = 16; |
693 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; |
694 | ccb[mbo].commlinkid = 0; |
695 | |
696 | #ifdef DEBUG |
697 | { |
698 | int i; |
699 | printk(KERN_DEBUG "aha1542_command: sending.. "); |
700 | for (i = 0; i < sizeof(ccb[mbo]) - 10; i++) |
701 | printk("%02x ", ((unchar *) & ccb[mbo])[i]); |
702 | }; |
703 | #endif |
704 | |
705 | if (done) { |
706 | DEB(printk("aha1542_queuecommand: now waiting for interrupt "); |
707 | aha1542_stat()); |
708 | SCpnt->scsi_done = done; |
709 | mb[mbo].status = 1; |
710 | aha1542_out(SCpnt->device->host->io_port, &ahacmd, 1); /* start scsi command */ |
711 | DEB(aha1542_stat()); |
712 | } else |
713 | printk("aha1542_queuecommand: done can't be NULL\n"); |
714 | |
715 | return 0; |
716 | } |
717 | |
718 | static DEF_SCSI_QCMD(aha1542_queuecommand) |
719 | |
720 | /* Initialize mailboxes */ |
721 | static void setup_mailboxes(int bse, struct Scsi_Host *shpnt) |
722 | { |
723 | int i; |
724 | struct mailbox *mb; |
725 | struct ccb *ccb; |
726 | |
727 | unchar cmd[5] = { CMD_MBINIT, AHA1542_MAILBOXES, 0, 0, 0}; |
728 | |
729 | mb = HOSTDATA(shpnt)->mb; |
730 | ccb = HOSTDATA(shpnt)->ccb; |
731 | |
732 | for (i = 0; i < AHA1542_MAILBOXES; i++) { |
733 | mb[i].status = mb[AHA1542_MAILBOXES + i].status = 0; |
734 | any2scsi(mb[i].ccbptr, SCSI_BUF_PA(&ccb[i])); |
735 | }; |
736 | aha1542_intr_reset(bse); /* reset interrupts, so they don't block */ |
737 | any2scsi((cmd + 2), SCSI_BUF_PA(mb)); |
738 | aha1542_out(bse, cmd, 5); |
739 | WAIT(INTRFLAGS(bse), INTRMASK, HACC, 0); |
740 | while (0) { |
741 | fail: |
742 | printk(KERN_ERR "aha1542_detect: failed setting up mailboxes\n"); |
743 | } |
744 | aha1542_intr_reset(bse); |
745 | } |
746 | |
747 | static int __init aha1542_getconfig(int base_io, unsigned char *irq_level, unsigned char *dma_chan, unsigned char *scsi_id) |
748 | { |
749 | unchar inquiry_cmd[] = {CMD_RETCONF}; |
750 | unchar inquiry_result[3]; |
751 | int i; |
752 | i = inb(STATUS(base_io)); |
753 | if (i & DF) { |
754 | i = inb(DATA(base_io)); |
755 | }; |
756 | aha1542_out(base_io, inquiry_cmd, 1); |
757 | aha1542_in(base_io, inquiry_result, 3); |
758 | WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); |
759 | while (0) { |
760 | fail: |
761 | printk(KERN_ERR "aha1542_detect: query board settings\n"); |
762 | } |
763 | aha1542_intr_reset(base_io); |
764 | switch (inquiry_result[0]) { |
765 | case 0x80: |
766 | *dma_chan = 7; |
767 | break; |
768 | case 0x40: |
769 | *dma_chan = 6; |
770 | break; |
771 | case 0x20: |
772 | *dma_chan = 5; |
773 | break; |
774 | case 0x01: |
775 | *dma_chan = 0; |
776 | break; |
777 | case 0: |
778 | /* This means that the adapter, although Adaptec 1542 compatible, doesn't use a DMA channel. |
779 | Currently only aware of the BusLogic BT-445S VL-Bus adapter which needs this. */ |
780 | *dma_chan = 0xFF; |
781 | break; |
782 | default: |
783 | printk(KERN_ERR "Unable to determine Adaptec DMA priority. Disabling board\n"); |
784 | return -1; |
785 | }; |
786 | switch (inquiry_result[1]) { |
787 | case 0x40: |
788 | *irq_level = 15; |
789 | break; |
790 | case 0x20: |
791 | *irq_level = 14; |
792 | break; |
793 | case 0x8: |
794 | *irq_level = 12; |
795 | break; |
796 | case 0x4: |
797 | *irq_level = 11; |
798 | break; |
799 | case 0x2: |
800 | *irq_level = 10; |
801 | break; |
802 | case 0x1: |
803 | *irq_level = 9; |
804 | break; |
805 | default: |
806 | printk(KERN_ERR "Unable to determine Adaptec IRQ level. Disabling board\n"); |
807 | return -1; |
808 | }; |
809 | *scsi_id = inquiry_result[2] & 7; |
810 | return 0; |
811 | } |
812 | |
813 | /* This function should only be called for 1542C boards - we can detect |
814 | the special firmware settings and unlock the board */ |
815 | |
816 | static int __init aha1542_mbenable(int base) |
817 | { |
818 | static unchar mbenable_cmd[3]; |
819 | static unchar mbenable_result[2]; |
820 | int retval; |
821 | |
822 | retval = BIOS_TRANSLATION_6432; |
823 | |
824 | mbenable_cmd[0] = CMD_EXTBIOS; |
825 | aha1542_out(base, mbenable_cmd, 1); |
826 | if (aha1542_in1(base, mbenable_result, 2)) |
827 | return retval; |
828 | WAITd(INTRFLAGS(base), INTRMASK, HACC, 0, 100); |
829 | aha1542_intr_reset(base); |
830 | |
831 | if ((mbenable_result[0] & 0x08) || mbenable_result[1]) { |
832 | mbenable_cmd[0] = CMD_MBENABLE; |
833 | mbenable_cmd[1] = 0; |
834 | mbenable_cmd[2] = mbenable_result[1]; |
835 | |
836 | if ((mbenable_result[0] & 0x08) && (mbenable_result[1] & 0x03)) |
837 | retval = BIOS_TRANSLATION_25563; |
838 | |
839 | aha1542_out(base, mbenable_cmd, 3); |
840 | WAIT(INTRFLAGS(base), INTRMASK, HACC, 0); |
841 | }; |
842 | while (0) { |
843 | fail: |
844 | printk(KERN_ERR "aha1542_mbenable: Mailbox init failed\n"); |
845 | } |
846 | aha1542_intr_reset(base); |
847 | return retval; |
848 | } |
849 | |
850 | /* Query the board to find out if it is a 1542 or a 1740, or whatever. */ |
851 | static int __init aha1542_query(int base_io, int *transl) |
852 | { |
853 | unchar inquiry_cmd[] = {CMD_INQUIRY}; |
854 | unchar inquiry_result[4]; |
855 | int i; |
856 | i = inb(STATUS(base_io)); |
857 | if (i & DF) { |
858 | i = inb(DATA(base_io)); |
859 | }; |
860 | aha1542_out(base_io, inquiry_cmd, 1); |
861 | aha1542_in(base_io, inquiry_result, 4); |
862 | WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); |
863 | while (0) { |
864 | fail: |
865 | printk(KERN_ERR "aha1542_detect: query card type\n"); |
866 | } |
867 | aha1542_intr_reset(base_io); |
868 | |
869 | *transl = BIOS_TRANSLATION_6432; /* Default case */ |
870 | |
871 | /* For an AHA1740 series board, we ignore the board since there is a |
872 | hardware bug which can lead to wrong blocks being returned if the board |
873 | is operating in the 1542 emulation mode. Since there is an extended mode |
874 | driver, we simply ignore the board and let the 1740 driver pick it up. |
875 | */ |
876 | |
877 | if (inquiry_result[0] == 0x43) { |
878 | printk(KERN_INFO "aha1542.c: Emulation mode not supported for AHA 174N hardware.\n"); |
879 | return 1; |
880 | }; |
881 | |
882 | /* Always call this - boards that do not support extended bios translation |
883 | will ignore the command, and we will set the proper default */ |
884 | |
885 | *transl = aha1542_mbenable(base_io); |
886 | |
887 | return 0; |
888 | } |
889 | |
890 | #ifndef MODULE |
891 | static char *setup_str[MAXBOARDS] __initdata; |
892 | static int setup_idx = 0; |
893 | |
894 | static void __init aha1542_setup(char *str, int *ints) |
895 | { |
896 | const char *ahausage = "aha1542: usage: aha1542=<PORTBASE>[,<BUSON>,<BUSOFF>[,<DMASPEED>]]\n"; |
897 | int setup_portbase; |
898 | |
899 | if (setup_idx >= MAXBOARDS) { |
900 | printk(KERN_ERR "aha1542: aha1542_setup called too many times! Bad LILO params ?\n"); |
901 | printk(KERN_ERR " Entryline 1: %s\n", setup_str[0]); |
902 | printk(KERN_ERR " Entryline 2: %s\n", setup_str[1]); |
903 | printk(KERN_ERR " This line: %s\n", str); |
904 | return; |
905 | } |
906 | if (ints[0] < 1 || ints[0] > 4) { |
907 | printk(KERN_ERR "aha1542: %s\n", str); |
908 | printk(ahausage); |
909 | printk(KERN_ERR "aha1542: Wrong parameters may cause system malfunction.. We try anyway..\n"); |
910 | } |
911 | setup_called[setup_idx] = ints[0]; |
912 | setup_str[setup_idx] = str; |
913 | |
914 | setup_portbase = ints[0] >= 1 ? ints[1] : 0; /* Preserve the default value.. */ |
915 | setup_buson[setup_idx] = ints[0] >= 2 ? ints[2] : 7; |
916 | setup_busoff[setup_idx] = ints[0] >= 3 ? ints[3] : 5; |
917 | if (ints[0] >= 4) |
918 | { |
919 | int atbt = -1; |
920 | switch (ints[4]) { |
921 | case 5: |
922 | atbt = 0x00; |
923 | break; |
924 | case 6: |
925 | atbt = 0x04; |
926 | break; |
927 | case 7: |
928 | atbt = 0x01; |
929 | break; |
930 | case 8: |
931 | atbt = 0x02; |
932 | break; |
933 | case 10: |
934 | atbt = 0x03; |
935 | break; |
936 | default: |
937 | printk(KERN_ERR "aha1542: %s\n", str); |
938 | printk(ahausage); |
939 | printk(KERN_ERR "aha1542: Valid values for DMASPEED are 5-8, 10 MB/s. Using jumper defaults.\n"); |
940 | break; |
941 | } |
942 | setup_dmaspeed[setup_idx] = atbt; |
943 | } |
944 | if (setup_portbase != 0) |
945 | bases[setup_idx] = setup_portbase; |
946 | |
947 | ++setup_idx; |
948 | } |
949 | |
950 | static int __init do_setup(char *str) |
951 | { |
952 | int ints[5]; |
953 | |
954 | int count=setup_idx; |
955 | |
956 | get_options(str, ARRAY_SIZE(ints), ints); |
957 | aha1542_setup(str,ints); |
958 | |
959 | return count<setup_idx; |
960 | } |
961 | |
962 | __setup("aha1542=",do_setup); |
963 | #endif |
964 | |
965 | /* return non-zero on detection */ |
966 | static int __init aha1542_detect(struct scsi_host_template * tpnt) |
967 | { |
968 | unsigned char dma_chan; |
969 | unsigned char irq_level; |
970 | unsigned char scsi_id; |
971 | unsigned long flags; |
972 | unsigned int base_io; |
973 | int trans; |
974 | struct Scsi_Host *shpnt = NULL; |
975 | int count = 0; |
976 | int indx; |
977 | |
978 | DEB(printk("aha1542_detect: \n")); |
979 | |
980 | tpnt->proc_name = "aha1542"; |
981 | |
982 | #ifdef MODULE |
983 | bases[0] = aha1542[0]; |
984 | setup_buson[0] = aha1542[1]; |
985 | setup_busoff[0] = aha1542[2]; |
986 | { |
987 | int atbt = -1; |
988 | switch (aha1542[3]) { |
989 | case 5: |
990 | atbt = 0x00; |
991 | break; |
992 | case 6: |
993 | atbt = 0x04; |
994 | break; |
995 | case 7: |
996 | atbt = 0x01; |
997 | break; |
998 | case 8: |
999 | atbt = 0x02; |
1000 | break; |
1001 | case 10: |
1002 | atbt = 0x03; |
1003 | break; |
1004 | }; |
1005 | setup_dmaspeed[0] = atbt; |
1006 | } |
1007 | #endif |
1008 | |
1009 | /* |
1010 | * Hunt for ISA Plug'n'Pray Adaptecs (AHA1535) |
1011 | */ |
1012 | |
1013 | if(isapnp) |
1014 | { |
1015 | struct pnp_dev *pdev = NULL; |
1016 | for(indx = 0; indx < ARRAY_SIZE(bases); indx++) { |
1017 | if(bases[indx]) |
1018 | continue; |
1019 | pdev = pnp_find_dev(NULL, ISAPNP_VENDOR('A', 'D', 'P'), |
1020 | ISAPNP_FUNCTION(0x1542), pdev); |
1021 | if(pdev==NULL) |
1022 | break; |
1023 | /* |
1024 | * Activate the PnP card |
1025 | */ |
1026 | |
1027 | if(pnp_device_attach(pdev)<0) |
1028 | continue; |
1029 | |
1030 | if(pnp_activate_dev(pdev)<0) { |
1031 | pnp_device_detach(pdev); |
1032 | continue; |
1033 | } |
1034 | |
1035 | if(!pnp_port_valid(pdev, 0)) { |
1036 | pnp_device_detach(pdev); |
1037 | continue; |
1038 | } |
1039 | |
1040 | bases[indx] = pnp_port_start(pdev, 0); |
1041 | |
1042 | /* The card can be queried for its DMA, we have |
1043 | the DMA set up that is enough */ |
1044 | |
1045 | printk(KERN_INFO "ISAPnP found an AHA1535 at I/O 0x%03X\n", bases[indx]); |
1046 | } |
1047 | } |
1048 | for (indx = 0; indx < ARRAY_SIZE(bases); indx++) |
1049 | if (bases[indx] != 0 && request_region(bases[indx], 4, "aha1542")) { |
1050 | shpnt = scsi_register(tpnt, |
1051 | sizeof(struct aha1542_hostdata)); |
1052 | |
1053 | if(shpnt==NULL) { |
1054 | release_region(bases[indx], 4); |
1055 | continue; |
1056 | } |
1057 | if (!aha1542_test_port(bases[indx], shpnt)) |
1058 | goto unregister; |
1059 | |
1060 | base_io = bases[indx]; |
1061 | |
1062 | /* Set the Bus on/off-times as not to ruin floppy performance */ |
1063 | { |
1064 | unchar oncmd[] = {CMD_BUSON_TIME, 7}; |
1065 | unchar offcmd[] = {CMD_BUSOFF_TIME, 5}; |
1066 | |
1067 | if (setup_called[indx]) { |
1068 | oncmd[1] = setup_buson[indx]; |
1069 | offcmd[1] = setup_busoff[indx]; |
1070 | } |
1071 | aha1542_intr_reset(base_io); |
1072 | aha1542_out(base_io, oncmd, 2); |
1073 | WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); |
1074 | aha1542_intr_reset(base_io); |
1075 | aha1542_out(base_io, offcmd, 2); |
1076 | WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); |
1077 | if (setup_dmaspeed[indx] >= 0) { |
1078 | unchar dmacmd[] = {CMD_DMASPEED, 0}; |
1079 | dmacmd[1] = setup_dmaspeed[indx]; |
1080 | aha1542_intr_reset(base_io); |
1081 | aha1542_out(base_io, dmacmd, 2); |
1082 | WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); |
1083 | } |
1084 | while (0) { |
1085 | fail: |
1086 | printk(KERN_ERR "aha1542_detect: setting bus on/off-time failed\n"); |
1087 | } |
1088 | aha1542_intr_reset(base_io); |
1089 | } |
1090 | if (aha1542_query(base_io, &trans)) |
1091 | goto unregister; |
1092 | |
1093 | if (aha1542_getconfig(base_io, &irq_level, &dma_chan, &scsi_id) == -1) |
1094 | goto unregister; |
1095 | |
1096 | printk(KERN_INFO "Configuring Adaptec (SCSI-ID %d) at IO:%x, IRQ %d", scsi_id, base_io, irq_level); |
1097 | if (dma_chan != 0xFF) |
1098 | printk(", DMA priority %d", dma_chan); |
1099 | printk("\n"); |
1100 | |
1101 | DEB(aha1542_stat()); |
1102 | setup_mailboxes(base_io, shpnt); |
1103 | |
1104 | DEB(aha1542_stat()); |
1105 | |
1106 | DEB(printk("aha1542_detect: enable interrupt channel %d\n", irq_level)); |
1107 | spin_lock_irqsave(&aha1542_lock, flags); |
1108 | if (request_irq(irq_level, do_aha1542_intr_handle, 0, |
1109 | "aha1542", shpnt)) { |
1110 | printk(KERN_ERR "Unable to allocate IRQ for adaptec controller.\n"); |
1111 | spin_unlock_irqrestore(&aha1542_lock, flags); |
1112 | goto unregister; |
1113 | } |
1114 | if (dma_chan != 0xFF) { |
1115 | if (request_dma(dma_chan, "aha1542")) { |
1116 | printk(KERN_ERR "Unable to allocate DMA channel for Adaptec.\n"); |
1117 | free_irq(irq_level, shpnt); |
1118 | spin_unlock_irqrestore(&aha1542_lock, flags); |
1119 | goto unregister; |
1120 | } |
1121 | if (dma_chan == 0 || dma_chan >= 5) { |
1122 | set_dma_mode(dma_chan, DMA_MODE_CASCADE); |
1123 | enable_dma(dma_chan); |
1124 | } |
1125 | } |
1126 | |
1127 | shpnt->this_id = scsi_id; |
1128 | shpnt->unique_id = base_io; |
1129 | shpnt->io_port = base_io; |
1130 | shpnt->n_io_port = 4; /* Number of bytes of I/O space used */ |
1131 | shpnt->dma_channel = dma_chan; |
1132 | shpnt->irq = irq_level; |
1133 | HOSTDATA(shpnt)->bios_translation = trans; |
1134 | if (trans == BIOS_TRANSLATION_25563) |
1135 | printk(KERN_INFO "aha1542.c: Using extended bios translation\n"); |
1136 | HOSTDATA(shpnt)->aha1542_last_mbi_used = (2 * AHA1542_MAILBOXES - 1); |
1137 | HOSTDATA(shpnt)->aha1542_last_mbo_used = (AHA1542_MAILBOXES - 1); |
1138 | memset(HOSTDATA(shpnt)->SCint, 0, sizeof(HOSTDATA(shpnt)->SCint)); |
1139 | spin_unlock_irqrestore(&aha1542_lock, flags); |
1140 | #if 0 |
1141 | DEB(printk(" *** READ CAPACITY ***\n")); |
1142 | |
1143 | { |
1144 | unchar buf[8]; |
1145 | static unchar cmd[] = { READ_CAPACITY, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; |
1146 | int i; |
1147 | |
1148 | for (i = 0; i < sizeof(buf); ++i) |
1149 | buf[i] = 0x87; |
1150 | for (i = 0; i < 2; ++i) |
1151 | if (!aha1542_command(i, cmd, buf, sizeof(buf))) { |
1152 | printk(KERN_DEBUG "aha_detect: LU %d sector_size %d device_size %d\n", |
1153 | i, xscsi2int(buf + 4), xscsi2int(buf)); |
1154 | } |
1155 | } |
1156 | |
1157 | DEB(printk(" *** NOW RUNNING MY OWN TEST *** \n")); |
1158 | |
1159 | for (i = 0; i < 4; ++i) { |
1160 | unsigned char cmd[10]; |
1161 | static buffer[512]; |
1162 | |
1163 | cmd[0] = READ_10; |
1164 | cmd[1] = 0; |
1165 | xany2scsi(cmd + 2, i); |
1166 | cmd[6] = 0; |
1167 | cmd[7] = 0; |
1168 | cmd[8] = 1; |
1169 | cmd[9] = 0; |
1170 | aha1542_command(0, cmd, buffer, 512); |
1171 | } |
1172 | #endif |
1173 | count++; |
1174 | continue; |
1175 | unregister: |
1176 | release_region(bases[indx], 4); |
1177 | scsi_unregister(shpnt); |
1178 | continue; |
1179 | |
1180 | }; |
1181 | |
1182 | return count; |
1183 | } |
1184 | |
1185 | static int aha1542_release(struct Scsi_Host *shost) |
1186 | { |
1187 | if (shost->irq) |
1188 | free_irq(shost->irq, shost); |
1189 | if (shost->dma_channel != 0xff) |
1190 | free_dma(shost->dma_channel); |
1191 | if (shost->io_port && shost->n_io_port) |
1192 | release_region(shost->io_port, shost->n_io_port); |
1193 | scsi_unregister(shost); |
1194 | return 0; |
1195 | } |
1196 | |
1197 | static int aha1542_restart(struct Scsi_Host *shost) |
1198 | { |
1199 | int i; |
1200 | int count = 0; |
1201 | #if 0 |
1202 | unchar ahacmd = CMD_START_SCSI; |
1203 | #endif |
1204 | |
1205 | for (i = 0; i < AHA1542_MAILBOXES; i++) |
1206 | if (HOSTDATA(shost)->SCint[i] && |
1207 | !(HOSTDATA(shost)->SCint[i]->device->soft_reset)) { |
1208 | #if 0 |
1209 | HOSTDATA(shost)->mb[i].status = 1; /* Indicate ready to restart... */ |
1210 | #endif |
1211 | count++; |
1212 | } |
1213 | printk(KERN_DEBUG "Potential to restart %d stalled commands...\n", count); |
1214 | #if 0 |
1215 | /* start scsi command */ |
1216 | if (count) |
1217 | aha1542_out(shost->io_port, &ahacmd, 1); |
1218 | #endif |
1219 | return 0; |
1220 | } |
1221 | |
1222 | /* |
1223 | * This is a device reset. This is handled by sending a special command |
1224 | * to the device. |
1225 | */ |
1226 | static int aha1542_dev_reset(Scsi_Cmnd * SCpnt) |
1227 | { |
1228 | unsigned long flags; |
1229 | struct mailbox *mb; |
1230 | unchar target = SCpnt->device->id; |
1231 | unchar lun = SCpnt->device->lun; |
1232 | int mbo; |
1233 | struct ccb *ccb; |
1234 | unchar ahacmd = CMD_START_SCSI; |
1235 | |
1236 | ccb = HOSTDATA(SCpnt->device->host)->ccb; |
1237 | mb = HOSTDATA(SCpnt->device->host)->mb; |
1238 | |
1239 | spin_lock_irqsave(&aha1542_lock, flags); |
1240 | mbo = HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used + 1; |
1241 | if (mbo >= AHA1542_MAILBOXES) |
1242 | mbo = 0; |
1243 | |
1244 | do { |
1245 | if (mb[mbo].status == 0 && HOSTDATA(SCpnt->device->host)->SCint[mbo] == NULL) |
1246 | break; |
1247 | mbo++; |
1248 | if (mbo >= AHA1542_MAILBOXES) |
1249 | mbo = 0; |
1250 | } while (mbo != HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used); |
1251 | |
1252 | if (mb[mbo].status || HOSTDATA(SCpnt->device->host)->SCint[mbo]) |
1253 | panic("Unable to find empty mailbox for aha1542.\n"); |
1254 | |
1255 | HOSTDATA(SCpnt->device->host)->SCint[mbo] = SCpnt; /* This will effectively |
1256 | prevent someone else from |
1257 | screwing with this cdb. */ |
1258 | |
1259 | HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used = mbo; |
1260 | spin_unlock_irqrestore(&aha1542_lock, flags); |
1261 | |
1262 | any2scsi(mb[mbo].ccbptr, SCSI_BUF_PA(&ccb[mbo])); /* This gets trashed for some reason */ |
1263 | |
1264 | memset(&ccb[mbo], 0, sizeof(struct ccb)); |
1265 | |
1266 | ccb[mbo].op = 0x81; /* BUS DEVICE RESET */ |
1267 | |
1268 | ccb[mbo].idlun = (target & 7) << 5 | (lun & 7); /*SCSI Target Id */ |
1269 | |
1270 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; |
1271 | ccb[mbo].commlinkid = 0; |
1272 | |
1273 | /* |
1274 | * Now tell the 1542 to flush all pending commands for this |
1275 | * target |
1276 | */ |
1277 | aha1542_out(SCpnt->device->host->io_port, &ahacmd, 1); |
1278 | |
1279 | scmd_printk(KERN_WARNING, SCpnt, |
1280 | "Trying device reset for target\n"); |
1281 | |
1282 | return SUCCESS; |
1283 | |
1284 | |
1285 | #ifdef ERIC_neverdef |
1286 | /* |
1287 | * With the 1542 we apparently never get an interrupt to |
1288 | * acknowledge a device reset being sent. Then again, Leonard |
1289 | * says we are doing this wrong in the first place... |
1290 | * |
1291 | * Take a wait and see attitude. If we get spurious interrupts, |
1292 | * then the device reset is doing something sane and useful, and |
1293 | * we will wait for the interrupt to post completion. |
1294 | */ |
1295 | printk(KERN_WARNING "Sent BUS DEVICE RESET to target %d\n", SCpnt->target); |
1296 | |
1297 | /* |
1298 | * Free the command block for all commands running on this |
1299 | * target... |
1300 | */ |
1301 | for (i = 0; i < AHA1542_MAILBOXES; i++) { |
1302 | if (HOSTDATA(SCpnt->host)->SCint[i] && |
1303 | HOSTDATA(SCpnt->host)->SCint[i]->target == SCpnt->target) { |
1304 | Scsi_Cmnd *SCtmp; |
1305 | SCtmp = HOSTDATA(SCpnt->host)->SCint[i]; |
1306 | kfree(SCtmp->host_scribble); |
1307 | SCtmp->host_scribble = NULL; |
1308 | HOSTDATA(SCpnt->host)->SCint[i] = NULL; |
1309 | HOSTDATA(SCpnt->host)->mb[i].status = 0; |
1310 | } |
1311 | } |
1312 | return SUCCESS; |
1313 | |
1314 | return FAILED; |
1315 | #endif /* ERIC_neverdef */ |
1316 | } |
1317 | |
1318 | static int aha1542_bus_reset(Scsi_Cmnd * SCpnt) |
1319 | { |
1320 | int i; |
1321 | |
1322 | /* |
1323 | * This does a scsi reset for all devices on the bus. |
1324 | * In principle, we could also reset the 1542 - should |
1325 | * we do this? Try this first, and we can add that later |
1326 | * if it turns out to be useful. |
1327 | */ |
1328 | outb(SCRST, CONTROL(SCpnt->device->host->io_port)); |
1329 | |
1330 | /* |
1331 | * Wait for the thing to settle down a bit. Unfortunately |
1332 | * this is going to basically lock up the machine while we |
1333 | * wait for this to complete. To be 100% correct, we need to |
1334 | * check for timeout, and if we are doing something like this |
1335 | * we are pretty desperate anyways. |
1336 | */ |
1337 | ssleep(4); |
1338 | |
1339 | spin_lock_irq(SCpnt->device->host->host_lock); |
1340 | |
1341 | WAIT(STATUS(SCpnt->device->host->io_port), |
1342 | STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); |
1343 | |
1344 | /* |
1345 | * Now try to pick up the pieces. For all pending commands, |
1346 | * free any internal data structures, and basically clear things |
1347 | * out. We do not try and restart any commands or anything - |
1348 | * the strategy handler takes care of that crap. |
1349 | */ |
1350 | printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->device->host->host_no); |
1351 | |
1352 | for (i = 0; i < AHA1542_MAILBOXES; i++) { |
1353 | if (HOSTDATA(SCpnt->device->host)->SCint[i] != NULL) { |
1354 | Scsi_Cmnd *SCtmp; |
1355 | SCtmp = HOSTDATA(SCpnt->device->host)->SCint[i]; |
1356 | |
1357 | |
1358 | if (SCtmp->device->soft_reset) { |
1359 | /* |
1360 | * If this device implements the soft reset option, |
1361 | * then it is still holding onto the command, and |
1362 | * may yet complete it. In this case, we don't |
1363 | * flush the data. |
1364 | */ |
1365 | continue; |
1366 | } |
1367 | kfree(SCtmp->host_scribble); |
1368 | SCtmp->host_scribble = NULL; |
1369 | HOSTDATA(SCpnt->device->host)->SCint[i] = NULL; |
1370 | HOSTDATA(SCpnt->device->host)->mb[i].status = 0; |
1371 | } |
1372 | } |
1373 | |
1374 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1375 | return SUCCESS; |
1376 | |
1377 | fail: |
1378 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1379 | return FAILED; |
1380 | } |
1381 | |
1382 | static int aha1542_host_reset(Scsi_Cmnd * SCpnt) |
1383 | { |
1384 | int i; |
1385 | |
1386 | /* |
1387 | * This does a scsi reset for all devices on the bus. |
1388 | * In principle, we could also reset the 1542 - should |
1389 | * we do this? Try this first, and we can add that later |
1390 | * if it turns out to be useful. |
1391 | */ |
1392 | outb(HRST | SCRST, CONTROL(SCpnt->device->host->io_port)); |
1393 | |
1394 | /* |
1395 | * Wait for the thing to settle down a bit. Unfortunately |
1396 | * this is going to basically lock up the machine while we |
1397 | * wait for this to complete. To be 100% correct, we need to |
1398 | * check for timeout, and if we are doing something like this |
1399 | * we are pretty desperate anyways. |
1400 | */ |
1401 | ssleep(4); |
1402 | spin_lock_irq(SCpnt->device->host->host_lock); |
1403 | |
1404 | WAIT(STATUS(SCpnt->device->host->io_port), |
1405 | STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); |
1406 | |
1407 | /* |
1408 | * We need to do this too before the 1542 can interact with |
1409 | * us again. |
1410 | */ |
1411 | setup_mailboxes(SCpnt->device->host->io_port, SCpnt->device->host); |
1412 | |
1413 | /* |
1414 | * Now try to pick up the pieces. For all pending commands, |
1415 | * free any internal data structures, and basically clear things |
1416 | * out. We do not try and restart any commands or anything - |
1417 | * the strategy handler takes care of that crap. |
1418 | */ |
1419 | printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->device->host->host_no); |
1420 | |
1421 | for (i = 0; i < AHA1542_MAILBOXES; i++) { |
1422 | if (HOSTDATA(SCpnt->device->host)->SCint[i] != NULL) { |
1423 | Scsi_Cmnd *SCtmp; |
1424 | SCtmp = HOSTDATA(SCpnt->device->host)->SCint[i]; |
1425 | |
1426 | if (SCtmp->device->soft_reset) { |
1427 | /* |
1428 | * If this device implements the soft reset option, |
1429 | * then it is still holding onto the command, and |
1430 | * may yet complete it. In this case, we don't |
1431 | * flush the data. |
1432 | */ |
1433 | continue; |
1434 | } |
1435 | kfree(SCtmp->host_scribble); |
1436 | SCtmp->host_scribble = NULL; |
1437 | HOSTDATA(SCpnt->device->host)->SCint[i] = NULL; |
1438 | HOSTDATA(SCpnt->device->host)->mb[i].status = 0; |
1439 | } |
1440 | } |
1441 | |
1442 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1443 | return SUCCESS; |
1444 | |
1445 | fail: |
1446 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1447 | return FAILED; |
1448 | } |
1449 | |
1450 | #if 0 |
1451 | /* |
1452 | * These are the old error handling routines. They are only temporarily |
1453 | * here while we play with the new error handling code. |
1454 | */ |
1455 | static int aha1542_old_abort(Scsi_Cmnd * SCpnt) |
1456 | { |
1457 | #if 0 |
1458 | unchar ahacmd = CMD_START_SCSI; |
1459 | unsigned long flags; |
1460 | struct mailbox *mb; |
1461 | int mbi, mbo, i; |
1462 | |
1463 | printk(KERN_DEBUG "In aha1542_abort: %x %x\n", |
1464 | inb(STATUS(SCpnt->host->io_port)), |
1465 | inb(INTRFLAGS(SCpnt->host->io_port))); |
1466 | |
1467 | spin_lock_irqsave(&aha1542_lock, flags); |
1468 | mb = HOSTDATA(SCpnt->host)->mb; |
1469 | mbi = HOSTDATA(SCpnt->host)->aha1542_last_mbi_used + 1; |
1470 | if (mbi >= 2 * AHA1542_MAILBOXES) |
1471 | mbi = AHA1542_MAILBOXES; |
1472 | |
1473 | do { |
1474 | if (mb[mbi].status != 0) |
1475 | break; |
1476 | mbi++; |
1477 | if (mbi >= 2 * AHA1542_MAILBOXES) |
1478 | mbi = AHA1542_MAILBOXES; |
1479 | } while (mbi != HOSTDATA(SCpnt->host)->aha1542_last_mbi_used); |
1480 | spin_unlock_irqrestore(&aha1542_lock, flags); |
1481 | |
1482 | if (mb[mbi].status) { |
1483 | printk(KERN_ERR "Lost interrupt discovered on irq %d - attempting to recover\n", |
1484 | SCpnt->host->irq); |
1485 | aha1542_intr_handle(SCpnt->host, NULL); |
1486 | return 0; |
1487 | } |
1488 | /* OK, no lost interrupt. Try looking to see how many pending commands |
1489 | we think we have. */ |
1490 | |
1491 | for (i = 0; i < AHA1542_MAILBOXES; i++) |
1492 | if (HOSTDATA(SCpnt->host)->SCint[i]) { |
1493 | if (HOSTDATA(SCpnt->host)->SCint[i] == SCpnt) { |
1494 | printk(KERN_ERR "Timed out command pending for %s\n", |
1495 | SCpnt->request->rq_disk ? |
1496 | SCpnt->request->rq_disk->disk_name : "?" |
1497 | ); |
1498 | if (HOSTDATA(SCpnt->host)->mb[i].status) { |
1499 | printk(KERN_ERR "OGMB still full - restarting\n"); |
1500 | aha1542_out(SCpnt->host->io_port, &ahacmd, 1); |
1501 | }; |
1502 | } else |
1503 | printk(KERN_ERR "Other pending command %s\n", |
1504 | SCpnt->request->rq_disk ? |
1505 | SCpnt->request->rq_disk->disk_name : "?" |
1506 | ); |
1507 | } |
1508 | #endif |
1509 | |
1510 | DEB(printk("aha1542_abort\n")); |
1511 | #if 0 |
1512 | spin_lock_irqsave(&aha1542_lock, flags); |
1513 | for (mbo = 0; mbo < AHA1542_MAILBOXES; mbo++) { |
1514 | if (SCpnt == HOSTDATA(SCpnt->host)->SCint[mbo]) { |
1515 | mb[mbo].status = 2; /* Abort command */ |
1516 | aha1542_out(SCpnt->host->io_port, &ahacmd, 1); /* start scsi command */ |
1517 | spin_unlock_irqrestore(&aha1542_lock, flags); |
1518 | break; |
1519 | } |
1520 | } |
1521 | if (AHA1542_MAILBOXES == mbo) |
1522 | spin_unlock_irqrestore(&aha1542_lock, flags); |
1523 | #endif |
1524 | return SCSI_ABORT_SNOOZE; |
1525 | } |
1526 | |
1527 | /* We do not implement a reset function here, but the upper level code |
1528 | assumes that it will get some kind of response for the command in |
1529 | SCpnt. We must oblige, or the command will hang the scsi system. |
1530 | For a first go, we assume that the 1542 notifies us with all of the |
1531 | pending commands (it does implement soft reset, after all). */ |
1532 | |
1533 | static int aha1542_old_reset(Scsi_Cmnd * SCpnt, unsigned int reset_flags) |
1534 | { |
1535 | unchar ahacmd = CMD_START_SCSI; |
1536 | int i; |
1537 | |
1538 | /* |
1539 | * See if a bus reset was suggested. |
1540 | */ |
1541 | if (reset_flags & SCSI_RESET_SUGGEST_BUS_RESET) { |
1542 | /* |
1543 | * This does a scsi reset for all devices on the bus. |
1544 | * In principle, we could also reset the 1542 - should |
1545 | * we do this? Try this first, and we can add that later |
1546 | * if it turns out to be useful. |
1547 | */ |
1548 | outb(HRST | SCRST, CONTROL(SCpnt->host->io_port)); |
1549 | |
1550 | /* |
1551 | * Wait for the thing to settle down a bit. Unfortunately |
1552 | * this is going to basically lock up the machine while we |
1553 | * wait for this to complete. To be 100% correct, we need to |
1554 | * check for timeout, and if we are doing something like this |
1555 | * we are pretty desperate anyways. |
1556 | */ |
1557 | WAIT(STATUS(SCpnt->host->io_port), |
1558 | STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); |
1559 | |
1560 | /* |
1561 | * We need to do this too before the 1542 can interact with |
1562 | * us again. |
1563 | */ |
1564 | setup_mailboxes(SCpnt->host->io_port, SCpnt->host); |
1565 | |
1566 | /* |
1567 | * Now try to pick up the pieces. Restart all commands |
1568 | * that are currently active on the bus, and reset all of |
1569 | * the datastructures. We have some time to kill while |
1570 | * things settle down, so print a nice message. |
1571 | */ |
1572 | printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->host->host_no); |
1573 | |
1574 | for (i = 0; i < AHA1542_MAILBOXES; i++) |
1575 | if (HOSTDATA(SCpnt->host)->SCint[i] != NULL) { |
1576 | Scsi_Cmnd *SCtmp; |
1577 | SCtmp = HOSTDATA(SCpnt->host)->SCint[i]; |
1578 | SCtmp->result = DID_RESET << 16; |
1579 | kfree(SCtmp->host_scribble); |
1580 | SCtmp->host_scribble = NULL; |
1581 | printk(KERN_WARNING "Sending DID_RESET for target %d\n", SCpnt->target); |
1582 | SCtmp->scsi_done(SCpnt); |
1583 | |
1584 | HOSTDATA(SCpnt->host)->SCint[i] = NULL; |
1585 | HOSTDATA(SCpnt->host)->mb[i].status = 0; |
1586 | } |
1587 | /* |
1588 | * Now tell the mid-level code what we did here. Since |
1589 | * we have restarted all of the outstanding commands, |
1590 | * then report SUCCESS. |
1591 | */ |
1592 | return (SCSI_RESET_SUCCESS | SCSI_RESET_BUS_RESET); |
1593 | fail: |
1594 | printk(KERN_CRIT "aha1542.c: Unable to perform hard reset.\n"); |
1595 | printk(KERN_CRIT "Power cycle machine to reset\n"); |
1596 | return (SCSI_RESET_ERROR | SCSI_RESET_BUS_RESET); |
1597 | |
1598 | |
1599 | } else { |
1600 | /* This does a selective reset of just the one device */ |
1601 | /* First locate the ccb for this command */ |
1602 | for (i = 0; i < AHA1542_MAILBOXES; i++) |
1603 | if (HOSTDATA(SCpnt->host)->SCint[i] == SCpnt) { |
1604 | HOSTDATA(SCpnt->host)->ccb[i].op = 0x81; /* BUS DEVICE RESET */ |
1605 | /* Now tell the 1542 to flush all pending commands for this target */ |
1606 | aha1542_out(SCpnt->host->io_port, &ahacmd, 1); |
1607 | |
1608 | /* Here is the tricky part. What to do next. Do we get an interrupt |
1609 | for the commands that we aborted with the specified target, or |
1610 | do we generate this on our own? Try it without first and see |
1611 | what happens */ |
1612 | printk(KERN_WARNING "Sent BUS DEVICE RESET to target %d\n", SCpnt->target); |
1613 | |
1614 | /* If the first does not work, then try the second. I think the |
1615 | first option is more likely to be correct. Free the command |
1616 | block for all commands running on this target... */ |
1617 | for (i = 0; i < AHA1542_MAILBOXES; i++) |
1618 | if (HOSTDATA(SCpnt->host)->SCint[i] && |
1619 | HOSTDATA(SCpnt->host)->SCint[i]->target == SCpnt->target) { |
1620 | Scsi_Cmnd *SCtmp; |
1621 | SCtmp = HOSTDATA(SCpnt->host)->SCint[i]; |
1622 | SCtmp->result = DID_RESET << 16; |
1623 | kfree(SCtmp->host_scribble); |
1624 | SCtmp->host_scribble = NULL; |
1625 | printk(KERN_WARNING "Sending DID_RESET for target %d\n", SCpnt->target); |
1626 | SCtmp->scsi_done(SCpnt); |
1627 | |
1628 | HOSTDATA(SCpnt->host)->SCint[i] = NULL; |
1629 | HOSTDATA(SCpnt->host)->mb[i].status = 0; |
1630 | } |
1631 | return SCSI_RESET_SUCCESS; |
1632 | } |
1633 | } |
1634 | /* No active command at this time, so this means that each time we got |
1635 | some kind of response the last time through. Tell the mid-level code |
1636 | to request sense information in order to decide what to do next. */ |
1637 | return SCSI_RESET_PUNT; |
1638 | } |
1639 | #endif /* end of big comment block around old_abort + old_reset */ |
1640 | |
1641 | static int aha1542_biosparam(struct scsi_device *sdev, |
1642 | struct block_device *bdev, sector_t capacity, int *ip) |
1643 | { |
1644 | int translation_algorithm; |
1645 | int size = capacity; |
1646 | |
1647 | translation_algorithm = HOSTDATA(sdev->host)->bios_translation; |
1648 | |
1649 | if ((size >> 11) > 1024 && translation_algorithm == BIOS_TRANSLATION_25563) { |
1650 | /* Please verify that this is the same as what DOS returns */ |
1651 | ip[0] = 255; |
1652 | ip[1] = 63; |
1653 | ip[2] = size / 255 / 63; |
1654 | } else { |
1655 | ip[0] = 64; |
1656 | ip[1] = 32; |
1657 | ip[2] = size >> 11; |
1658 | } |
1659 | |
1660 | return 0; |
1661 | } |
1662 | MODULE_LICENSE("GPL"); |
1663 | |
1664 | |
1665 | static struct scsi_host_template driver_template = { |
1666 | .proc_name = "aha1542", |
1667 | .name = "Adaptec 1542", |
1668 | .detect = aha1542_detect, |
1669 | .release = aha1542_release, |
1670 | .queuecommand = aha1542_queuecommand, |
1671 | .eh_device_reset_handler= aha1542_dev_reset, |
1672 | .eh_bus_reset_handler = aha1542_bus_reset, |
1673 | .eh_host_reset_handler = aha1542_host_reset, |
1674 | .bios_param = aha1542_biosparam, |
1675 | .can_queue = AHA1542_MAILBOXES, |
1676 | .this_id = 7, |
1677 | .sg_tablesize = AHA1542_SCATTER, |
1678 | .cmd_per_lun = AHA1542_CMDLUN, |
1679 | .unchecked_isa_dma = 1, |
1680 | .use_clustering = ENABLE_CLUSTERING, |
1681 | }; |
1682 | #include "scsi_module.c" |
1683 |
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v2.6.34-rc5
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