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1da177e4 LT |
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 | |
726a6459 | 24 | * Modified by Adam Fritzler |
a88dc06c | 25 | * Added proper detection of the AHA-1640 (MCA, now deleted) |
1da177e4 LT |
26 | */ |
27 | ||
1da177e4 LT |
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> | |
643a7c43 OZ |
38 | #include <linux/isa.h> |
39 | #include <linux/pnp.h> | |
1da177e4 | 40 | #include <linux/blkdev.h> |
5a0e3ad6 | 41 | #include <linux/slab.h> |
1da177e4 LT |
42 | |
43 | #include <asm/dma.h> | |
1da177e4 LT |
44 | #include <asm/io.h> |
45 | ||
46 | #include "scsi.h" | |
47 | #include <scsi/scsi_host.h> | |
48 | #include "aha1542.h" | |
6ac7d115 | 49 | #include <linux/stat.h> |
1da177e4 LT |
50 | |
51 | #ifdef DEBUG | |
52 | #define DEB(x) x | |
53 | #else | |
54 | #define DEB(x) | |
55 | #endif | |
56 | ||
57 | /* | |
58 | 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 $"; | |
59 | */ | |
60 | ||
61 | /* The adaptec can be configured for quite a number of addresses, but | |
62 | I generally do not want the card poking around at random. We allow | |
63 | two addresses - this allows people to use the Adaptec with a Midi | |
64 | card, which also used 0x330 -- can be overridden with LILO! */ | |
65 | ||
66 | #define MAXBOARDS 4 /* Increase this and the sizes of the | |
67 | arrays below, if you need more.. */ | |
68 | ||
a88dc06c | 69 | /* Boards 3,4 slots are reserved for ISAPnP scans */ |
1da177e4 | 70 | |
643a7c43 | 71 | static unsigned int bases[MAXBOARDS] = {0x330, 0x334, 0, 0}; |
1da177e4 LT |
72 | |
73 | /* set by aha1542_setup according to the command line; they also may | |
74 | be marked __initdata, but require zero initializers then */ | |
75 | ||
76 | static int setup_called[MAXBOARDS]; | |
77 | static int setup_buson[MAXBOARDS]; | |
78 | static int setup_busoff[MAXBOARDS]; | |
643a7c43 | 79 | static int setup_dmaspeed[MAXBOARDS] = { -1, -1, -1, -1 }; |
1da177e4 LT |
80 | |
81 | /* | |
82 | * LILO/Module params: aha1542=<PORTBASE>[,<BUSON>,<BUSOFF>[,<DMASPEED>]] | |
83 | * | |
84 | * Where: <PORTBASE> is any of the valid AHA addresses: | |
85 | * 0x130, 0x134, 0x230, 0x234, 0x330, 0x334 | |
86 | * <BUSON> is the time (in microsecs) that AHA spends on the AT-bus | |
87 | * when transferring data. 1542A power-on default is 11us, | |
88 | * valid values are in range: 2..15 (decimal) | |
89 | * <BUSOFF> is the time that AHA spends OFF THE BUS after while | |
90 | * it is transferring data (not to monopolize the bus). | |
91 | * Power-on default is 4us, valid range: 1..64 microseconds. | |
92 | * <DMASPEED> Default is jumper selected (1542A: on the J1), | |
93 | * but experimenter can alter it with this. | |
94 | * Valid values: 5, 6, 7, 8, 10 (MB/s) | |
95 | * Factory default is 5 MB/s. | |
96 | */ | |
97 | ||
98 | #if defined(MODULE) | |
90ab5ee9 | 99 | static bool isapnp = 0; |
1da177e4 LT |
100 | static int aha1542[] = {0x330, 11, 4, -1}; |
101 | module_param_array(aha1542, int, NULL, 0); | |
102 | module_param(isapnp, bool, 0); | |
1da177e4 LT |
103 | #else |
104 | static int isapnp = 1; | |
105 | #endif | |
106 | ||
107 | #define BIOS_TRANSLATION_1632 0 /* Used by some old 1542A boards */ | |
108 | #define BIOS_TRANSLATION_6432 1 /* Default case these days */ | |
109 | #define BIOS_TRANSLATION_25563 2 /* Big disk case */ | |
110 | ||
111 | struct aha1542_hostdata { | |
112 | /* This will effectively start both of them at the first mailbox */ | |
113 | int bios_translation; /* Mapping bios uses - for compatibility */ | |
114 | int aha1542_last_mbi_used; | |
115 | int aha1542_last_mbo_used; | |
116 | Scsi_Cmnd *SCint[AHA1542_MAILBOXES]; | |
117 | struct mailbox mb[2 * AHA1542_MAILBOXES]; | |
118 | struct ccb ccb[AHA1542_MAILBOXES]; | |
119 | }; | |
120 | ||
121 | #define HOSTDATA(host) ((struct aha1542_hostdata *) &host->hostdata) | |
122 | ||
1da177e4 LT |
123 | static DEFINE_SPINLOCK(aha1542_lock); |
124 | ||
125 | ||
126 | ||
127 | #define WAITnexttimeout 3000000 | |
128 | ||
129 | static void setup_mailboxes(int base_io, struct Scsi_Host *shpnt); | |
130 | static int aha1542_restart(struct Scsi_Host *shost); | |
87c4d7bc | 131 | static void aha1542_intr_handle(struct Scsi_Host *shost); |
1da177e4 LT |
132 | |
133 | #define aha1542_intr_reset(base) outb(IRST, CONTROL(base)) | |
134 | ||
135 | #define WAIT(port, mask, allof, noneof) \ | |
136 | { register int WAITbits; \ | |
137 | register int WAITtimeout = WAITnexttimeout; \ | |
138 | while (1) { \ | |
139 | WAITbits = inb(port) & (mask); \ | |
140 | if ((WAITbits & (allof)) == (allof) && ((WAITbits & (noneof)) == 0)) \ | |
141 | break; \ | |
142 | if (--WAITtimeout == 0) goto fail; \ | |
143 | } \ | |
144 | } | |
145 | ||
146 | /* Similar to WAIT, except we use the udelay call to regulate the | |
147 | amount of time we wait. */ | |
148 | #define WAITd(port, mask, allof, noneof, timeout) \ | |
149 | { register int WAITbits; \ | |
150 | register int WAITtimeout = timeout; \ | |
151 | while (1) { \ | |
152 | WAITbits = inb(port) & (mask); \ | |
153 | if ((WAITbits & (allof)) == (allof) && ((WAITbits & (noneof)) == 0)) \ | |
154 | break; \ | |
155 | mdelay(1); \ | |
156 | if (--WAITtimeout == 0) goto fail; \ | |
157 | } \ | |
158 | } | |
159 | ||
160 | static void aha1542_stat(void) | |
161 | { | |
162 | /* int s = inb(STATUS), i = inb(INTRFLAGS); | |
163 | printk("status=%x intrflags=%x\n", s, i, WAITnexttimeout-WAITtimeout); */ | |
164 | } | |
165 | ||
166 | /* This is a bit complicated, but we need to make sure that an interrupt | |
167 | routine does not send something out while we are in the middle of this. | |
168 | Fortunately, it is only at boot time that multi-byte messages | |
169 | are ever sent. */ | |
170 | static int aha1542_out(unsigned int base, unchar * cmdp, int len) | |
171 | { | |
172 | unsigned long flags = 0; | |
173 | int got_lock; | |
174 | ||
175 | if (len == 1) { | |
176 | got_lock = 0; | |
177 | while (1 == 1) { | |
178 | WAIT(STATUS(base), CDF, 0, CDF); | |
179 | spin_lock_irqsave(&aha1542_lock, flags); | |
180 | if (inb(STATUS(base)) & CDF) { | |
181 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
182 | continue; | |
183 | } | |
184 | outb(*cmdp, DATA(base)); | |
185 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
186 | return 0; | |
187 | } | |
188 | } else { | |
189 | spin_lock_irqsave(&aha1542_lock, flags); | |
190 | got_lock = 1; | |
191 | while (len--) { | |
192 | WAIT(STATUS(base), CDF, 0, CDF); | |
193 | outb(*cmdp++, DATA(base)); | |
194 | } | |
195 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
196 | } | |
197 | return 0; | |
198 | fail: | |
199 | if (got_lock) | |
200 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
201 | printk(KERN_ERR "aha1542_out failed(%d): ", len + 1); | |
202 | aha1542_stat(); | |
203 | return 1; | |
204 | } | |
205 | ||
206 | /* Only used at boot time, so we do not need to worry about latency as much | |
207 | here */ | |
208 | ||
643a7c43 | 209 | static int aha1542_in(unsigned int base, unchar *cmdp, int len) |
1da177e4 LT |
210 | { |
211 | unsigned long flags; | |
212 | ||
213 | spin_lock_irqsave(&aha1542_lock, flags); | |
214 | while (len--) { | |
215 | WAIT(STATUS(base), DF, DF, 0); | |
216 | *cmdp++ = inb(DATA(base)); | |
217 | } | |
218 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
219 | return 0; | |
220 | fail: | |
221 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
222 | printk(KERN_ERR "aha1542_in failed(%d): ", len + 1); | |
223 | aha1542_stat(); | |
224 | return 1; | |
225 | } | |
226 | ||
227 | /* Similar to aha1542_in, except that we wait a very short period of time. | |
228 | We use this if we know the board is alive and awake, but we are not sure | |
229 | if the board will respond to the command we are about to send or not */ | |
643a7c43 | 230 | static int aha1542_in1(unsigned int base, unchar *cmdp, int len) |
1da177e4 LT |
231 | { |
232 | unsigned long flags; | |
233 | ||
234 | spin_lock_irqsave(&aha1542_lock, flags); | |
235 | while (len--) { | |
236 | WAITd(STATUS(base), DF, DF, 0, 100); | |
237 | *cmdp++ = inb(DATA(base)); | |
238 | } | |
239 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
240 | return 0; | |
241 | fail: | |
242 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
243 | return 1; | |
244 | } | |
245 | ||
246 | static int makecode(unsigned hosterr, unsigned scsierr) | |
247 | { | |
248 | switch (hosterr) { | |
249 | case 0x0: | |
250 | case 0xa: /* Linked command complete without error and linked normally */ | |
251 | case 0xb: /* Linked command complete without error, interrupt generated */ | |
252 | hosterr = 0; | |
253 | break; | |
254 | ||
255 | case 0x11: /* Selection time out-The initiator selection or target | |
256 | reselection was not complete within the SCSI Time out period */ | |
257 | hosterr = DID_TIME_OUT; | |
258 | break; | |
259 | ||
260 | case 0x12: /* Data overrun/underrun-The target attempted to transfer more data | |
261 | than was allocated by the Data Length field or the sum of the | |
262 | Scatter / Gather Data Length fields. */ | |
263 | ||
264 | case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */ | |
265 | ||
266 | case 0x15: /* MBO command was not 00, 01 or 02-The first byte of the CB was | |
267 | invalid. This usually indicates a software failure. */ | |
268 | ||
269 | case 0x16: /* Invalid CCB Operation Code-The first byte of the CCB was invalid. | |
270 | This usually indicates a software failure. */ | |
271 | ||
272 | case 0x17: /* Linked CCB does not have the same LUN-A subsequent CCB of a set | |
273 | of linked CCB's does not specify the same logical unit number as | |
274 | the first. */ | |
275 | case 0x18: /* Invalid Target Direction received from Host-The direction of a | |
276 | Target Mode CCB was invalid. */ | |
277 | ||
278 | case 0x19: /* Duplicate CCB Received in Target Mode-More than once CCB was | |
279 | received to service data transfer between the same target LUN | |
280 | and initiator SCSI ID in the same direction. */ | |
281 | ||
282 | case 0x1a: /* Invalid CCB or Segment List Parameter-A segment list with a zero | |
283 | length segment or invalid segment list boundaries was received. | |
284 | A CCB parameter was invalid. */ | |
285 | DEB(printk("Aha1542: %x %x\n", hosterr, scsierr)); | |
286 | hosterr = DID_ERROR; /* Couldn't find any better */ | |
287 | break; | |
288 | ||
289 | case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus | |
290 | phase sequence was requested by the target. The host adapter | |
291 | will generate a SCSI Reset Condition, notifying the host with | |
292 | a SCRD interrupt */ | |
293 | hosterr = DID_RESET; | |
294 | break; | |
295 | default: | |
296 | printk(KERN_ERR "aha1542: makecode: unknown hoststatus %x\n", hosterr); | |
297 | break; | |
298 | } | |
299 | return scsierr | (hosterr << 16); | |
300 | } | |
301 | ||
643a7c43 | 302 | static int aha1542_test_port(int bse, struct Scsi_Host *shpnt) |
1da177e4 LT |
303 | { |
304 | unchar inquiry_cmd[] = {CMD_INQUIRY}; | |
305 | unchar inquiry_result[4]; | |
306 | unchar *cmdp; | |
307 | int len; | |
308 | volatile int debug = 0; | |
309 | ||
310 | /* Quick and dirty test for presence of the card. */ | |
311 | if (inb(STATUS(bse)) == 0xff) | |
312 | return 0; | |
313 | ||
314 | /* Reset the adapter. I ought to make a hard reset, but it's not really necessary */ | |
315 | ||
316 | /* DEB(printk("aha1542_test_port called \n")); */ | |
317 | ||
318 | /* In case some other card was probing here, reset interrupts */ | |
319 | aha1542_intr_reset(bse); /* reset interrupts, so they don't block */ | |
320 | ||
321 | outb(SRST | IRST /*|SCRST */ , CONTROL(bse)); | |
322 | ||
323 | mdelay(20); /* Wait a little bit for things to settle down. */ | |
324 | ||
325 | debug = 1; | |
326 | /* Expect INIT and IDLE, any of the others are bad */ | |
327 | WAIT(STATUS(bse), STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); | |
328 | ||
329 | debug = 2; | |
330 | /* Shouldn't have generated any interrupts during reset */ | |
331 | if (inb(INTRFLAGS(bse)) & INTRMASK) | |
332 | goto fail; | |
333 | ||
334 | ||
335 | /* Perform a host adapter inquiry instead so we do not need to set | |
336 | up the mailboxes ahead of time */ | |
337 | ||
338 | aha1542_out(bse, inquiry_cmd, 1); | |
339 | ||
340 | debug = 3; | |
341 | len = 4; | |
342 | cmdp = &inquiry_result[0]; | |
343 | ||
344 | while (len--) { | |
345 | WAIT(STATUS(bse), DF, DF, 0); | |
346 | *cmdp++ = inb(DATA(bse)); | |
347 | } | |
348 | ||
349 | debug = 8; | |
350 | /* Reading port should reset DF */ | |
351 | if (inb(STATUS(bse)) & DF) | |
352 | goto fail; | |
353 | ||
354 | debug = 9; | |
355 | /* When HACC, command is completed, and we're though testing */ | |
356 | WAIT(INTRFLAGS(bse), HACC, HACC, 0); | |
357 | /* now initialize adapter */ | |
358 | ||
359 | debug = 10; | |
360 | /* Clear interrupts */ | |
361 | outb(IRST, CONTROL(bse)); | |
362 | ||
363 | debug = 11; | |
364 | ||
365 | return debug; /* 1 = ok */ | |
366 | fail: | |
367 | return 0; /* 0 = not ok */ | |
368 | } | |
369 | ||
370 | /* A quick wrapper for do_aha1542_intr_handle to grab the spin lock */ | |
87c4d7bc | 371 | static irqreturn_t do_aha1542_intr_handle(int dummy, void *dev_id) |
1da177e4 LT |
372 | { |
373 | unsigned long flags; | |
87c4d7bc | 374 | struct Scsi_Host *shost = dev_id; |
1da177e4 LT |
375 | |
376 | spin_lock_irqsave(shost->host_lock, flags); | |
87c4d7bc | 377 | aha1542_intr_handle(shost); |
1da177e4 LT |
378 | spin_unlock_irqrestore(shost->host_lock, flags); |
379 | return IRQ_HANDLED; | |
380 | } | |
381 | ||
382 | /* A "high" level interrupt handler */ | |
87c4d7bc | 383 | static void aha1542_intr_handle(struct Scsi_Host *shost) |
1da177e4 LT |
384 | { |
385 | void (*my_done) (Scsi_Cmnd *) = NULL; | |
386 | int errstatus, mbi, mbo, mbistatus; | |
387 | int number_serviced; | |
388 | unsigned long flags; | |
389 | Scsi_Cmnd *SCtmp; | |
390 | int flag; | |
391 | int needs_restart; | |
392 | struct mailbox *mb; | |
393 | struct ccb *ccb; | |
394 | ||
395 | mb = HOSTDATA(shost)->mb; | |
396 | ccb = HOSTDATA(shost)->ccb; | |
397 | ||
398 | #ifdef DEBUG | |
399 | { | |
400 | flag = inb(INTRFLAGS(shost->io_port)); | |
401 | printk(KERN_DEBUG "aha1542_intr_handle: "); | |
402 | if (!(flag & ANYINTR)) | |
403 | printk("no interrupt?"); | |
404 | if (flag & MBIF) | |
405 | printk("MBIF "); | |
406 | if (flag & MBOA) | |
407 | printk("MBOF "); | |
408 | if (flag & HACC) | |
409 | printk("HACC "); | |
410 | if (flag & SCRD) | |
411 | printk("SCRD "); | |
412 | printk("status %02x\n", inb(STATUS(shost->io_port))); | |
413 | }; | |
414 | #endif | |
415 | number_serviced = 0; | |
416 | needs_restart = 0; | |
417 | ||
418 | while (1 == 1) { | |
419 | flag = inb(INTRFLAGS(shost->io_port)); | |
420 | ||
421 | /* Check for unusual interrupts. If any of these happen, we should | |
422 | probably do something special, but for now just printing a message | |
423 | is sufficient. A SCSI reset detected is something that we really | |
424 | need to deal with in some way. */ | |
425 | if (flag & ~MBIF) { | |
426 | if (flag & MBOA) | |
427 | printk("MBOF "); | |
428 | if (flag & HACC) | |
429 | printk("HACC "); | |
430 | if (flag & SCRD) { | |
431 | needs_restart = 1; | |
432 | printk("SCRD "); | |
433 | } | |
434 | } | |
435 | aha1542_intr_reset(shost->io_port); | |
436 | ||
437 | spin_lock_irqsave(&aha1542_lock, flags); | |
438 | mbi = HOSTDATA(shost)->aha1542_last_mbi_used + 1; | |
439 | if (mbi >= 2 * AHA1542_MAILBOXES) | |
440 | mbi = AHA1542_MAILBOXES; | |
441 | ||
442 | do { | |
443 | if (mb[mbi].status != 0) | |
444 | break; | |
445 | mbi++; | |
446 | if (mbi >= 2 * AHA1542_MAILBOXES) | |
447 | mbi = AHA1542_MAILBOXES; | |
448 | } while (mbi != HOSTDATA(shost)->aha1542_last_mbi_used); | |
449 | ||
450 | if (mb[mbi].status == 0) { | |
451 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
452 | /* Hmm, no mail. Must have read it the last time around */ | |
453 | if (!number_serviced && !needs_restart) | |
454 | printk(KERN_WARNING "aha1542.c: interrupt received, but no mail.\n"); | |
455 | /* We detected a reset. Restart all pending commands for | |
456 | devices that use the hard reset option */ | |
457 | if (needs_restart) | |
458 | aha1542_restart(shost); | |
459 | return; | |
460 | }; | |
461 | ||
10be6250 | 462 | mbo = (scsi2int(mb[mbi].ccbptr) - (isa_virt_to_bus(&ccb[0]))) / sizeof(struct ccb); |
1da177e4 LT |
463 | mbistatus = mb[mbi].status; |
464 | mb[mbi].status = 0; | |
465 | HOSTDATA(shost)->aha1542_last_mbi_used = mbi; | |
466 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
467 | ||
468 | #ifdef DEBUG | |
469 | { | |
470 | if (ccb[mbo].tarstat | ccb[mbo].hastat) | |
471 | printk(KERN_DEBUG "aha1542_command: returning %x (status %d)\n", | |
472 | ccb[mbo].tarstat + ((int) ccb[mbo].hastat << 16), mb[mbi].status); | |
473 | }; | |
474 | #endif | |
475 | ||
476 | if (mbistatus == 3) | |
477 | continue; /* Aborted command not found */ | |
478 | ||
479 | #ifdef DEBUG | |
480 | printk(KERN_DEBUG "...done %d %d\n", mbo, mbi); | |
481 | #endif | |
482 | ||
483 | SCtmp = HOSTDATA(shost)->SCint[mbo]; | |
484 | ||
485 | if (!SCtmp || !SCtmp->scsi_done) { | |
486 | printk(KERN_WARNING "aha1542_intr_handle: Unexpected interrupt\n"); | |
487 | printk(KERN_WARNING "tarstat=%x, hastat=%x idlun=%x ccb#=%d \n", ccb[mbo].tarstat, | |
488 | ccb[mbo].hastat, ccb[mbo].idlun, mbo); | |
489 | return; | |
490 | } | |
491 | my_done = SCtmp->scsi_done; | |
c9475cb0 JJ |
492 | kfree(SCtmp->host_scribble); |
493 | SCtmp->host_scribble = NULL; | |
1da177e4 LT |
494 | /* Fetch the sense data, and tuck it away, in the required slot. The |
495 | Adaptec automatically fetches it, and there is no guarantee that | |
496 | we will still have it in the cdb when we come back */ | |
497 | if (ccb[mbo].tarstat == 2) | |
498 | memcpy(SCtmp->sense_buffer, &ccb[mbo].cdb[ccb[mbo].cdblen], | |
b80ca4f7 | 499 | SCSI_SENSE_BUFFERSIZE); |
1da177e4 LT |
500 | |
501 | ||
502 | /* is there mail :-) */ | |
503 | ||
504 | /* more error checking left out here */ | |
505 | if (mbistatus != 1) | |
506 | /* This is surely wrong, but I don't know what's right */ | |
507 | errstatus = makecode(ccb[mbo].hastat, ccb[mbo].tarstat); | |
508 | else | |
509 | errstatus = 0; | |
510 | ||
511 | #ifdef DEBUG | |
512 | if (errstatus) | |
513 | printk(KERN_DEBUG "(aha1542 error:%x %x %x) ", errstatus, | |
514 | ccb[mbo].hastat, ccb[mbo].tarstat); | |
515 | #endif | |
516 | ||
517 | if (ccb[mbo].tarstat == 2) { | |
518 | #ifdef DEBUG | |
519 | int i; | |
520 | #endif | |
521 | DEB(printk("aha1542_intr_handle: sense:")); | |
522 | #ifdef DEBUG | |
523 | for (i = 0; i < 12; i++) | |
524 | printk("%02x ", ccb[mbo].cdb[ccb[mbo].cdblen + i]); | |
525 | printk("\n"); | |
526 | #endif | |
527 | /* | |
528 | DEB(printk("aha1542_intr_handle: buf:")); | |
529 | for (i = 0; i < bufflen; i++) | |
530 | printk("%02x ", ((unchar *)buff)[i]); | |
531 | printk("\n"); | |
532 | */ | |
533 | } | |
534 | DEB(if (errstatus) printk("aha1542_intr_handle: returning %6x\n", errstatus)); | |
535 | SCtmp->result = errstatus; | |
536 | HOSTDATA(shost)->SCint[mbo] = NULL; /* This effectively frees up the mailbox slot, as | |
537 | far as queuecommand is concerned */ | |
538 | my_done(SCtmp); | |
539 | number_serviced++; | |
540 | }; | |
541 | } | |
542 | ||
f281233d | 543 | static int aha1542_queuecommand_lck(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *)) |
1da177e4 LT |
544 | { |
545 | unchar ahacmd = CMD_START_SCSI; | |
546 | unchar direction; | |
547 | unchar *cmd = (unchar *) SCpnt->cmnd; | |
548 | unchar target = SCpnt->device->id; | |
549 | unchar lun = SCpnt->device->lun; | |
550 | unsigned long flags; | |
fc3fdfcc | 551 | int bufflen = scsi_bufflen(SCpnt); |
1da177e4 LT |
552 | int mbo; |
553 | struct mailbox *mb; | |
554 | struct ccb *ccb; | |
555 | ||
556 | DEB(int i); | |
557 | ||
558 | mb = HOSTDATA(SCpnt->device->host)->mb; | |
559 | ccb = HOSTDATA(SCpnt->device->host)->ccb; | |
560 | ||
561 | DEB(if (target > 1) { | |
562 | SCpnt->result = DID_TIME_OUT << 16; | |
563 | done(SCpnt); return 0; | |
564 | } | |
565 | ); | |
566 | ||
567 | if (*cmd == REQUEST_SENSE) { | |
568 | /* Don't do the command - we have the sense data already */ | |
1da177e4 LT |
569 | SCpnt->result = 0; |
570 | done(SCpnt); | |
571 | return 0; | |
572 | } | |
573 | #ifdef DEBUG | |
574 | if (*cmd == READ_10 || *cmd == WRITE_10) | |
575 | i = xscsi2int(cmd + 2); | |
576 | else if (*cmd == READ_6 || *cmd == WRITE_6) | |
577 | i = scsi2int(cmd + 2); | |
578 | else | |
579 | i = -1; | |
580 | if (done) | |
581 | printk(KERN_DEBUG "aha1542_queuecommand: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen); | |
582 | else | |
583 | printk(KERN_DEBUG "aha1542_command: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen); | |
584 | aha1542_stat(); | |
585 | printk(KERN_DEBUG "aha1542_queuecommand: dumping scsi cmd:"); | |
586 | for (i = 0; i < SCpnt->cmd_len; i++) | |
587 | printk("%02x ", cmd[i]); | |
588 | printk("\n"); | |
589 | if (*cmd == WRITE_10 || *cmd == WRITE_6) | |
590 | return 0; /* we are still testing, so *don't* write */ | |
591 | #endif | |
592 | /* Use the outgoing mailboxes in a round-robin fashion, because this | |
593 | is how the host adapter will scan for them */ | |
594 | ||
595 | spin_lock_irqsave(&aha1542_lock, flags); | |
596 | mbo = HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used + 1; | |
597 | if (mbo >= AHA1542_MAILBOXES) | |
598 | mbo = 0; | |
599 | ||
600 | do { | |
601 | if (mb[mbo].status == 0 && HOSTDATA(SCpnt->device->host)->SCint[mbo] == NULL) | |
602 | break; | |
603 | mbo++; | |
604 | if (mbo >= AHA1542_MAILBOXES) | |
605 | mbo = 0; | |
606 | } while (mbo != HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used); | |
607 | ||
608 | if (mb[mbo].status || HOSTDATA(SCpnt->device->host)->SCint[mbo]) | |
609 | panic("Unable to find empty mailbox for aha1542.\n"); | |
610 | ||
611 | HOSTDATA(SCpnt->device->host)->SCint[mbo] = SCpnt; /* This will effectively prevent someone else from | |
612 | screwing with this cdb. */ | |
613 | ||
614 | HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used = mbo; | |
615 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
616 | ||
617 | #ifdef DEBUG | |
618 | printk(KERN_DEBUG "Sending command (%d %x)...", mbo, done); | |
619 | #endif | |
620 | ||
10be6250 | 621 | any2scsi(mb[mbo].ccbptr, isa_virt_to_bus(&ccb[mbo])); /* This gets trashed for some reason */ |
1da177e4 LT |
622 | |
623 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
624 | ||
625 | ccb[mbo].cdblen = SCpnt->cmd_len; | |
626 | ||
627 | direction = 0; | |
628 | if (*cmd == READ_10 || *cmd == READ_6) | |
629 | direction = 8; | |
630 | else if (*cmd == WRITE_10 || *cmd == WRITE_6) | |
631 | direction = 16; | |
632 | ||
633 | memcpy(ccb[mbo].cdb, cmd, ccb[mbo].cdblen); | |
634 | ||
fc3fdfcc | 635 | if (bufflen) { |
51cf2249 | 636 | struct scatterlist *sg; |
1da177e4 LT |
637 | struct chain *cptr; |
638 | #ifdef DEBUG | |
639 | unsigned char *ptr; | |
640 | #endif | |
fc3fdfcc | 641 | int i, sg_count = scsi_sg_count(SCpnt); |
1da177e4 | 642 | ccb[mbo].op = 2; /* SCSI Initiator Command w/scatter-gather */ |
fc3fdfcc BH |
643 | SCpnt->host_scribble = kmalloc(sizeof(*cptr)*sg_count, |
644 | GFP_KERNEL | GFP_DMA); | |
1da177e4 LT |
645 | cptr = (struct chain *) SCpnt->host_scribble; |
646 | if (cptr == NULL) { | |
647 | /* free the claimed mailbox slot */ | |
648 | HOSTDATA(SCpnt->device->host)->SCint[mbo] = NULL; | |
649 | return SCSI_MLQUEUE_HOST_BUSY; | |
650 | } | |
fc3fdfcc | 651 | scsi_for_each_sg(SCpnt, sg, sg_count, i) { |
10be6250 OZ |
652 | any2scsi(cptr[i].dataptr, isa_page_to_bus(sg_page(sg)) |
653 | + sg->offset); | |
51cf2249 | 654 | any2scsi(cptr[i].datalen, sg->length); |
1da177e4 | 655 | }; |
fc3fdfcc | 656 | any2scsi(ccb[mbo].datalen, sg_count * sizeof(struct chain)); |
10be6250 | 657 | any2scsi(ccb[mbo].dataptr, isa_virt_to_bus(cptr)); |
1da177e4 LT |
658 | #ifdef DEBUG |
659 | printk("cptr %x: ", cptr); | |
660 | ptr = (unsigned char *) cptr; | |
661 | for (i = 0; i < 18; i++) | |
662 | printk("%02x ", ptr[i]); | |
663 | #endif | |
664 | } else { | |
665 | ccb[mbo].op = 0; /* SCSI Initiator Command */ | |
666 | SCpnt->host_scribble = NULL; | |
fc3fdfcc BH |
667 | any2scsi(ccb[mbo].datalen, 0); |
668 | any2scsi(ccb[mbo].dataptr, 0); | |
1da177e4 LT |
669 | }; |
670 | ccb[mbo].idlun = (target & 7) << 5 | direction | (lun & 7); /*SCSI Target Id */ | |
671 | ccb[mbo].rsalen = 16; | |
672 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
673 | ccb[mbo].commlinkid = 0; | |
674 | ||
675 | #ifdef DEBUG | |
676 | { | |
677 | int i; | |
678 | printk(KERN_DEBUG "aha1542_command: sending.. "); | |
679 | for (i = 0; i < sizeof(ccb[mbo]) - 10; i++) | |
680 | printk("%02x ", ((unchar *) & ccb[mbo])[i]); | |
681 | }; | |
682 | #endif | |
683 | ||
684 | if (done) { | |
685 | DEB(printk("aha1542_queuecommand: now waiting for interrupt "); | |
686 | aha1542_stat()); | |
687 | SCpnt->scsi_done = done; | |
688 | mb[mbo].status = 1; | |
689 | aha1542_out(SCpnt->device->host->io_port, &ahacmd, 1); /* start scsi command */ | |
690 | DEB(aha1542_stat()); | |
691 | } else | |
692 | printk("aha1542_queuecommand: done can't be NULL\n"); | |
693 | ||
694 | return 0; | |
695 | } | |
696 | ||
f281233d JG |
697 | static DEF_SCSI_QCMD(aha1542_queuecommand) |
698 | ||
1da177e4 LT |
699 | /* Initialize mailboxes */ |
700 | static void setup_mailboxes(int bse, struct Scsi_Host *shpnt) | |
701 | { | |
702 | int i; | |
703 | struct mailbox *mb; | |
704 | struct ccb *ccb; | |
705 | ||
706 | unchar cmd[5] = { CMD_MBINIT, AHA1542_MAILBOXES, 0, 0, 0}; | |
707 | ||
708 | mb = HOSTDATA(shpnt)->mb; | |
709 | ccb = HOSTDATA(shpnt)->ccb; | |
710 | ||
711 | for (i = 0; i < AHA1542_MAILBOXES; i++) { | |
712 | mb[i].status = mb[AHA1542_MAILBOXES + i].status = 0; | |
10be6250 | 713 | any2scsi(mb[i].ccbptr, isa_virt_to_bus(&ccb[i])); |
1da177e4 LT |
714 | }; |
715 | aha1542_intr_reset(bse); /* reset interrupts, so they don't block */ | |
10be6250 | 716 | any2scsi((cmd + 2), isa_virt_to_bus(mb)); |
1da177e4 LT |
717 | aha1542_out(bse, cmd, 5); |
718 | WAIT(INTRFLAGS(bse), INTRMASK, HACC, 0); | |
719 | while (0) { | |
720 | fail: | |
721 | printk(KERN_ERR "aha1542_detect: failed setting up mailboxes\n"); | |
722 | } | |
723 | aha1542_intr_reset(bse); | |
724 | } | |
725 | ||
643a7c43 | 726 | static int aha1542_getconfig(int base_io, unsigned char *irq_level, unsigned char *dma_chan, unsigned char *scsi_id) |
1da177e4 LT |
727 | { |
728 | unchar inquiry_cmd[] = {CMD_RETCONF}; | |
729 | unchar inquiry_result[3]; | |
730 | int i; | |
731 | i = inb(STATUS(base_io)); | |
732 | if (i & DF) { | |
733 | i = inb(DATA(base_io)); | |
734 | }; | |
735 | aha1542_out(base_io, inquiry_cmd, 1); | |
736 | aha1542_in(base_io, inquiry_result, 3); | |
737 | WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); | |
738 | while (0) { | |
739 | fail: | |
740 | printk(KERN_ERR "aha1542_detect: query board settings\n"); | |
741 | } | |
742 | aha1542_intr_reset(base_io); | |
743 | switch (inquiry_result[0]) { | |
744 | case 0x80: | |
745 | *dma_chan = 7; | |
746 | break; | |
747 | case 0x40: | |
748 | *dma_chan = 6; | |
749 | break; | |
750 | case 0x20: | |
751 | *dma_chan = 5; | |
752 | break; | |
753 | case 0x01: | |
754 | *dma_chan = 0; | |
755 | break; | |
756 | case 0: | |
757 | /* This means that the adapter, although Adaptec 1542 compatible, doesn't use a DMA channel. | |
758 | Currently only aware of the BusLogic BT-445S VL-Bus adapter which needs this. */ | |
759 | *dma_chan = 0xFF; | |
760 | break; | |
761 | default: | |
762 | printk(KERN_ERR "Unable to determine Adaptec DMA priority. Disabling board\n"); | |
763 | return -1; | |
764 | }; | |
765 | switch (inquiry_result[1]) { | |
766 | case 0x40: | |
767 | *irq_level = 15; | |
768 | break; | |
769 | case 0x20: | |
770 | *irq_level = 14; | |
771 | break; | |
772 | case 0x8: | |
773 | *irq_level = 12; | |
774 | break; | |
775 | case 0x4: | |
776 | *irq_level = 11; | |
777 | break; | |
778 | case 0x2: | |
779 | *irq_level = 10; | |
780 | break; | |
781 | case 0x1: | |
782 | *irq_level = 9; | |
783 | break; | |
784 | default: | |
785 | printk(KERN_ERR "Unable to determine Adaptec IRQ level. Disabling board\n"); | |
786 | return -1; | |
787 | }; | |
788 | *scsi_id = inquiry_result[2] & 7; | |
789 | return 0; | |
790 | } | |
791 | ||
792 | /* This function should only be called for 1542C boards - we can detect | |
793 | the special firmware settings and unlock the board */ | |
794 | ||
643a7c43 | 795 | static int aha1542_mbenable(int base) |
1da177e4 LT |
796 | { |
797 | static unchar mbenable_cmd[3]; | |
798 | static unchar mbenable_result[2]; | |
799 | int retval; | |
800 | ||
801 | retval = BIOS_TRANSLATION_6432; | |
802 | ||
803 | mbenable_cmd[0] = CMD_EXTBIOS; | |
804 | aha1542_out(base, mbenable_cmd, 1); | |
805 | if (aha1542_in1(base, mbenable_result, 2)) | |
806 | return retval; | |
807 | WAITd(INTRFLAGS(base), INTRMASK, HACC, 0, 100); | |
808 | aha1542_intr_reset(base); | |
809 | ||
810 | if ((mbenable_result[0] & 0x08) || mbenable_result[1]) { | |
811 | mbenable_cmd[0] = CMD_MBENABLE; | |
812 | mbenable_cmd[1] = 0; | |
813 | mbenable_cmd[2] = mbenable_result[1]; | |
814 | ||
815 | if ((mbenable_result[0] & 0x08) && (mbenable_result[1] & 0x03)) | |
816 | retval = BIOS_TRANSLATION_25563; | |
817 | ||
818 | aha1542_out(base, mbenable_cmd, 3); | |
819 | WAIT(INTRFLAGS(base), INTRMASK, HACC, 0); | |
820 | }; | |
821 | while (0) { | |
822 | fail: | |
823 | printk(KERN_ERR "aha1542_mbenable: Mailbox init failed\n"); | |
824 | } | |
825 | aha1542_intr_reset(base); | |
826 | return retval; | |
827 | } | |
828 | ||
829 | /* Query the board to find out if it is a 1542 or a 1740, or whatever. */ | |
643a7c43 | 830 | static int aha1542_query(int base_io, int *transl) |
1da177e4 LT |
831 | { |
832 | unchar inquiry_cmd[] = {CMD_INQUIRY}; | |
833 | unchar inquiry_result[4]; | |
834 | int i; | |
835 | i = inb(STATUS(base_io)); | |
836 | if (i & DF) { | |
837 | i = inb(DATA(base_io)); | |
838 | }; | |
839 | aha1542_out(base_io, inquiry_cmd, 1); | |
840 | aha1542_in(base_io, inquiry_result, 4); | |
841 | WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); | |
842 | while (0) { | |
843 | fail: | |
844 | printk(KERN_ERR "aha1542_detect: query card type\n"); | |
845 | } | |
846 | aha1542_intr_reset(base_io); | |
847 | ||
848 | *transl = BIOS_TRANSLATION_6432; /* Default case */ | |
849 | ||
850 | /* For an AHA1740 series board, we ignore the board since there is a | |
851 | hardware bug which can lead to wrong blocks being returned if the board | |
852 | is operating in the 1542 emulation mode. Since there is an extended mode | |
853 | driver, we simply ignore the board and let the 1740 driver pick it up. | |
854 | */ | |
855 | ||
856 | if (inquiry_result[0] == 0x43) { | |
857 | printk(KERN_INFO "aha1542.c: Emulation mode not supported for AHA 174N hardware.\n"); | |
858 | return 1; | |
859 | }; | |
860 | ||
861 | /* Always call this - boards that do not support extended bios translation | |
862 | will ignore the command, and we will set the proper default */ | |
863 | ||
864 | *transl = aha1542_mbenable(base_io); | |
865 | ||
866 | return 0; | |
867 | } | |
868 | ||
869 | #ifndef MODULE | |
870 | static char *setup_str[MAXBOARDS] __initdata; | |
871 | static int setup_idx = 0; | |
872 | ||
873 | static void __init aha1542_setup(char *str, int *ints) | |
874 | { | |
875 | const char *ahausage = "aha1542: usage: aha1542=<PORTBASE>[,<BUSON>,<BUSOFF>[,<DMASPEED>]]\n"; | |
876 | int setup_portbase; | |
877 | ||
878 | if (setup_idx >= MAXBOARDS) { | |
879 | printk(KERN_ERR "aha1542: aha1542_setup called too many times! Bad LILO params ?\n"); | |
880 | printk(KERN_ERR " Entryline 1: %s\n", setup_str[0]); | |
881 | printk(KERN_ERR " Entryline 2: %s\n", setup_str[1]); | |
882 | printk(KERN_ERR " This line: %s\n", str); | |
883 | return; | |
884 | } | |
885 | if (ints[0] < 1 || ints[0] > 4) { | |
886 | printk(KERN_ERR "aha1542: %s\n", str); | |
887 | printk(ahausage); | |
888 | printk(KERN_ERR "aha1542: Wrong parameters may cause system malfunction.. We try anyway..\n"); | |
889 | } | |
890 | setup_called[setup_idx] = ints[0]; | |
891 | setup_str[setup_idx] = str; | |
892 | ||
893 | setup_portbase = ints[0] >= 1 ? ints[1] : 0; /* Preserve the default value.. */ | |
894 | setup_buson[setup_idx] = ints[0] >= 2 ? ints[2] : 7; | |
895 | setup_busoff[setup_idx] = ints[0] >= 3 ? ints[3] : 5; | |
896 | if (ints[0] >= 4) | |
897 | { | |
898 | int atbt = -1; | |
899 | switch (ints[4]) { | |
900 | case 5: | |
901 | atbt = 0x00; | |
902 | break; | |
903 | case 6: | |
904 | atbt = 0x04; | |
905 | break; | |
906 | case 7: | |
907 | atbt = 0x01; | |
908 | break; | |
909 | case 8: | |
910 | atbt = 0x02; | |
911 | break; | |
912 | case 10: | |
913 | atbt = 0x03; | |
914 | break; | |
915 | default: | |
916 | printk(KERN_ERR "aha1542: %s\n", str); | |
917 | printk(ahausage); | |
918 | printk(KERN_ERR "aha1542: Valid values for DMASPEED are 5-8, 10 MB/s. Using jumper defaults.\n"); | |
919 | break; | |
920 | } | |
921 | setup_dmaspeed[setup_idx] = atbt; | |
922 | } | |
923 | if (setup_portbase != 0) | |
924 | bases[setup_idx] = setup_portbase; | |
925 | ||
926 | ++setup_idx; | |
927 | } | |
928 | ||
929 | static int __init do_setup(char *str) | |
930 | { | |
931 | int ints[5]; | |
932 | ||
933 | int count=setup_idx; | |
934 | ||
6391a113 | 935 | get_options(str, ARRAY_SIZE(ints), ints); |
1da177e4 LT |
936 | aha1542_setup(str,ints); |
937 | ||
938 | return count<setup_idx; | |
939 | } | |
940 | ||
941 | __setup("aha1542=",do_setup); | |
942 | #endif | |
943 | ||
944 | /* return non-zero on detection */ | |
643a7c43 | 945 | static struct Scsi_Host *aha1542_hw_init(struct scsi_host_template *tpnt, struct device *pdev, int indx) |
1da177e4 LT |
946 | { |
947 | unsigned char dma_chan; | |
948 | unsigned char irq_level; | |
949 | unsigned char scsi_id; | |
950 | unsigned long flags; | |
951 | unsigned int base_io; | |
952 | int trans; | |
953 | struct Scsi_Host *shpnt = NULL; | |
1da177e4 LT |
954 | |
955 | DEB(printk("aha1542_detect: \n")); | |
956 | ||
957 | tpnt->proc_name = "aha1542"; | |
958 | ||
1da177e4 | 959 | if (bases[indx] != 0 && request_region(bases[indx], 4, "aha1542")) { |
643a7c43 | 960 | shpnt = scsi_host_alloc(tpnt, |
1da177e4 LT |
961 | sizeof(struct aha1542_hostdata)); |
962 | ||
963 | if(shpnt==NULL) { | |
964 | release_region(bases[indx], 4); | |
643a7c43 | 965 | return NULL; |
1da177e4 | 966 | } |
1da177e4 LT |
967 | if (!aha1542_test_port(bases[indx], shpnt)) |
968 | goto unregister; | |
969 | ||
1da177e4 LT |
970 | base_io = bases[indx]; |
971 | ||
972 | /* Set the Bus on/off-times as not to ruin floppy performance */ | |
973 | { | |
974 | unchar oncmd[] = {CMD_BUSON_TIME, 7}; | |
975 | unchar offcmd[] = {CMD_BUSOFF_TIME, 5}; | |
976 | ||
977 | if (setup_called[indx]) { | |
978 | oncmd[1] = setup_buson[indx]; | |
979 | offcmd[1] = setup_busoff[indx]; | |
980 | } | |
981 | aha1542_intr_reset(base_io); | |
982 | aha1542_out(base_io, oncmd, 2); | |
983 | WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); | |
984 | aha1542_intr_reset(base_io); | |
985 | aha1542_out(base_io, offcmd, 2); | |
986 | WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); | |
987 | if (setup_dmaspeed[indx] >= 0) { | |
988 | unchar dmacmd[] = {CMD_DMASPEED, 0}; | |
989 | dmacmd[1] = setup_dmaspeed[indx]; | |
990 | aha1542_intr_reset(base_io); | |
991 | aha1542_out(base_io, dmacmd, 2); | |
992 | WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); | |
993 | } | |
994 | while (0) { | |
995 | fail: | |
996 | printk(KERN_ERR "aha1542_detect: setting bus on/off-time failed\n"); | |
997 | } | |
998 | aha1542_intr_reset(base_io); | |
999 | } | |
1000 | if (aha1542_query(base_io, &trans)) | |
1001 | goto unregister; | |
1002 | ||
1003 | if (aha1542_getconfig(base_io, &irq_level, &dma_chan, &scsi_id) == -1) | |
1004 | goto unregister; | |
1005 | ||
1006 | printk(KERN_INFO "Configuring Adaptec (SCSI-ID %d) at IO:%x, IRQ %d", scsi_id, base_io, irq_level); | |
1007 | if (dma_chan != 0xFF) | |
1008 | printk(", DMA priority %d", dma_chan); | |
1009 | printk("\n"); | |
1010 | ||
1011 | DEB(aha1542_stat()); | |
1012 | setup_mailboxes(base_io, shpnt); | |
1013 | ||
1014 | DEB(aha1542_stat()); | |
1015 | ||
1016 | DEB(printk("aha1542_detect: enable interrupt channel %d\n", irq_level)); | |
1017 | spin_lock_irqsave(&aha1542_lock, flags); | |
87c4d7bc JG |
1018 | if (request_irq(irq_level, do_aha1542_intr_handle, 0, |
1019 | "aha1542", shpnt)) { | |
1da177e4 LT |
1020 | printk(KERN_ERR "Unable to allocate IRQ for adaptec controller.\n"); |
1021 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
1022 | goto unregister; | |
1023 | } | |
1024 | if (dma_chan != 0xFF) { | |
1025 | if (request_dma(dma_chan, "aha1542")) { | |
1026 | printk(KERN_ERR "Unable to allocate DMA channel for Adaptec.\n"); | |
87c4d7bc | 1027 | free_irq(irq_level, shpnt); |
1da177e4 LT |
1028 | spin_unlock_irqrestore(&aha1542_lock, flags); |
1029 | goto unregister; | |
1030 | } | |
1031 | if (dma_chan == 0 || dma_chan >= 5) { | |
1032 | set_dma_mode(dma_chan, DMA_MODE_CASCADE); | |
1033 | enable_dma(dma_chan); | |
1034 | } | |
1035 | } | |
87c4d7bc | 1036 | |
1da177e4 LT |
1037 | shpnt->this_id = scsi_id; |
1038 | shpnt->unique_id = base_io; | |
1039 | shpnt->io_port = base_io; | |
1040 | shpnt->n_io_port = 4; /* Number of bytes of I/O space used */ | |
1041 | shpnt->dma_channel = dma_chan; | |
1042 | shpnt->irq = irq_level; | |
1043 | HOSTDATA(shpnt)->bios_translation = trans; | |
1044 | if (trans == BIOS_TRANSLATION_25563) | |
1045 | printk(KERN_INFO "aha1542.c: Using extended bios translation\n"); | |
1046 | HOSTDATA(shpnt)->aha1542_last_mbi_used = (2 * AHA1542_MAILBOXES - 1); | |
1047 | HOSTDATA(shpnt)->aha1542_last_mbo_used = (AHA1542_MAILBOXES - 1); | |
1048 | memset(HOSTDATA(shpnt)->SCint, 0, sizeof(HOSTDATA(shpnt)->SCint)); | |
1049 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
1da177e4 | 1050 | |
643a7c43 OZ |
1051 | if (scsi_add_host(shpnt, pdev)) { |
1052 | if (shpnt->dma_channel != 0xff) | |
1053 | free_dma(shpnt->dma_channel); | |
1054 | free_irq(irq_level, shpnt); | |
1055 | goto unregister; | |
1da177e4 LT |
1056 | } |
1057 | ||
643a7c43 | 1058 | scsi_scan_host(shpnt); |
1da177e4 | 1059 | |
643a7c43 | 1060 | return shpnt; |
1da177e4 LT |
1061 | unregister: |
1062 | release_region(bases[indx], 4); | |
643a7c43 OZ |
1063 | scsi_host_put(shpnt); |
1064 | return NULL; | |
1da177e4 LT |
1065 | |
1066 | }; | |
1067 | ||
643a7c43 | 1068 | return NULL; |
1da177e4 LT |
1069 | } |
1070 | ||
1071 | static int aha1542_release(struct Scsi_Host *shost) | |
1072 | { | |
643a7c43 | 1073 | scsi_remove_host(shost); |
1da177e4 | 1074 | if (shost->irq) |
87c4d7bc | 1075 | free_irq(shost->irq, shost); |
1da177e4 LT |
1076 | if (shost->dma_channel != 0xff) |
1077 | free_dma(shost->dma_channel); | |
1078 | if (shost->io_port && shost->n_io_port) | |
1079 | release_region(shost->io_port, shost->n_io_port); | |
643a7c43 | 1080 | scsi_host_put(shost); |
1da177e4 LT |
1081 | return 0; |
1082 | } | |
1083 | ||
1084 | static int aha1542_restart(struct Scsi_Host *shost) | |
1085 | { | |
1086 | int i; | |
1087 | int count = 0; | |
1da177e4 LT |
1088 | |
1089 | for (i = 0; i < AHA1542_MAILBOXES; i++) | |
1090 | if (HOSTDATA(shost)->SCint[i] && | |
1091 | !(HOSTDATA(shost)->SCint[i]->device->soft_reset)) { | |
1da177e4 LT |
1092 | count++; |
1093 | } | |
1094 | printk(KERN_DEBUG "Potential to restart %d stalled commands...\n", count); | |
6f82fbf3 | 1095 | |
1da177e4 LT |
1096 | return 0; |
1097 | } | |
1098 | ||
1da177e4 LT |
1099 | /* |
1100 | * This is a device reset. This is handled by sending a special command | |
1101 | * to the device. | |
1102 | */ | |
1103 | static int aha1542_dev_reset(Scsi_Cmnd * SCpnt) | |
1104 | { | |
1105 | unsigned long flags; | |
1106 | struct mailbox *mb; | |
1107 | unchar target = SCpnt->device->id; | |
1108 | unchar lun = SCpnt->device->lun; | |
1109 | int mbo; | |
1110 | struct ccb *ccb; | |
1111 | unchar ahacmd = CMD_START_SCSI; | |
1112 | ||
1113 | ccb = HOSTDATA(SCpnt->device->host)->ccb; | |
1114 | mb = HOSTDATA(SCpnt->device->host)->mb; | |
1115 | ||
1116 | spin_lock_irqsave(&aha1542_lock, flags); | |
1117 | mbo = HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used + 1; | |
1118 | if (mbo >= AHA1542_MAILBOXES) | |
1119 | mbo = 0; | |
1120 | ||
1121 | do { | |
1122 | if (mb[mbo].status == 0 && HOSTDATA(SCpnt->device->host)->SCint[mbo] == NULL) | |
1123 | break; | |
1124 | mbo++; | |
1125 | if (mbo >= AHA1542_MAILBOXES) | |
1126 | mbo = 0; | |
1127 | } while (mbo != HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used); | |
1128 | ||
1129 | if (mb[mbo].status || HOSTDATA(SCpnt->device->host)->SCint[mbo]) | |
1130 | panic("Unable to find empty mailbox for aha1542.\n"); | |
1131 | ||
1132 | HOSTDATA(SCpnt->device->host)->SCint[mbo] = SCpnt; /* This will effectively | |
1133 | prevent someone else from | |
1134 | screwing with this cdb. */ | |
1135 | ||
1136 | HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used = mbo; | |
1137 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
1138 | ||
10be6250 | 1139 | any2scsi(mb[mbo].ccbptr, isa_virt_to_bus(&ccb[mbo])); /* This gets trashed for some reason */ |
1da177e4 LT |
1140 | |
1141 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
1142 | ||
1143 | ccb[mbo].op = 0x81; /* BUS DEVICE RESET */ | |
1144 | ||
1145 | ccb[mbo].idlun = (target & 7) << 5 | (lun & 7); /*SCSI Target Id */ | |
1146 | ||
1147 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
1148 | ccb[mbo].commlinkid = 0; | |
1149 | ||
1150 | /* | |
1151 | * Now tell the 1542 to flush all pending commands for this | |
1152 | * target | |
1153 | */ | |
1154 | aha1542_out(SCpnt->device->host->io_port, &ahacmd, 1); | |
1155 | ||
017560fc JG |
1156 | scmd_printk(KERN_WARNING, SCpnt, |
1157 | "Trying device reset for target\n"); | |
1da177e4 LT |
1158 | |
1159 | return SUCCESS; | |
1da177e4 LT |
1160 | } |
1161 | ||
1162 | static int aha1542_bus_reset(Scsi_Cmnd * SCpnt) | |
1163 | { | |
1164 | int i; | |
1165 | ||
1166 | /* | |
1167 | * This does a scsi reset for all devices on the bus. | |
1168 | * In principle, we could also reset the 1542 - should | |
1169 | * we do this? Try this first, and we can add that later | |
1170 | * if it turns out to be useful. | |
1171 | */ | |
1172 | outb(SCRST, CONTROL(SCpnt->device->host->io_port)); | |
1173 | ||
1174 | /* | |
1175 | * Wait for the thing to settle down a bit. Unfortunately | |
1176 | * this is going to basically lock up the machine while we | |
1177 | * wait for this to complete. To be 100% correct, we need to | |
1178 | * check for timeout, and if we are doing something like this | |
1179 | * we are pretty desperate anyways. | |
1180 | */ | |
1da177e4 | 1181 | ssleep(4); |
68b3aa7c | 1182 | |
1da177e4 LT |
1183 | spin_lock_irq(SCpnt->device->host->host_lock); |
1184 | ||
1185 | WAIT(STATUS(SCpnt->device->host->io_port), | |
1186 | STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); | |
1187 | ||
1188 | /* | |
1189 | * Now try to pick up the pieces. For all pending commands, | |
1190 | * free any internal data structures, and basically clear things | |
1191 | * out. We do not try and restart any commands or anything - | |
1192 | * the strategy handler takes care of that crap. | |
1193 | */ | |
1194 | printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->device->host->host_no); | |
1195 | ||
1196 | for (i = 0; i < AHA1542_MAILBOXES; i++) { | |
1197 | if (HOSTDATA(SCpnt->device->host)->SCint[i] != NULL) { | |
1198 | Scsi_Cmnd *SCtmp; | |
1199 | SCtmp = HOSTDATA(SCpnt->device->host)->SCint[i]; | |
1200 | ||
1201 | ||
1202 | if (SCtmp->device->soft_reset) { | |
1203 | /* | |
1204 | * If this device implements the soft reset option, | |
1205 | * then it is still holding onto the command, and | |
1206 | * may yet complete it. In this case, we don't | |
1207 | * flush the data. | |
1208 | */ | |
1209 | continue; | |
1210 | } | |
c9475cb0 JJ |
1211 | kfree(SCtmp->host_scribble); |
1212 | SCtmp->host_scribble = NULL; | |
1da177e4 LT |
1213 | HOSTDATA(SCpnt->device->host)->SCint[i] = NULL; |
1214 | HOSTDATA(SCpnt->device->host)->mb[i].status = 0; | |
1215 | } | |
1216 | } | |
1217 | ||
68b3aa7c | 1218 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1da177e4 LT |
1219 | return SUCCESS; |
1220 | ||
1221 | fail: | |
68b3aa7c | 1222 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1da177e4 LT |
1223 | return FAILED; |
1224 | } | |
1225 | ||
1226 | static int aha1542_host_reset(Scsi_Cmnd * SCpnt) | |
1227 | { | |
1228 | int i; | |
1229 | ||
1230 | /* | |
1231 | * This does a scsi reset for all devices on the bus. | |
1232 | * In principle, we could also reset the 1542 - should | |
1233 | * we do this? Try this first, and we can add that later | |
1234 | * if it turns out to be useful. | |
1235 | */ | |
1236 | outb(HRST | SCRST, CONTROL(SCpnt->device->host->io_port)); | |
1237 | ||
1238 | /* | |
1239 | * Wait for the thing to settle down a bit. Unfortunately | |
1240 | * this is going to basically lock up the machine while we | |
1241 | * wait for this to complete. To be 100% correct, we need to | |
1242 | * check for timeout, and if we are doing something like this | |
1243 | * we are pretty desperate anyways. | |
1244 | */ | |
1da177e4 LT |
1245 | ssleep(4); |
1246 | spin_lock_irq(SCpnt->device->host->host_lock); | |
1247 | ||
1248 | WAIT(STATUS(SCpnt->device->host->io_port), | |
1249 | STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); | |
1250 | ||
1251 | /* | |
1252 | * We need to do this too before the 1542 can interact with | |
1253 | * us again. | |
1254 | */ | |
1255 | setup_mailboxes(SCpnt->device->host->io_port, SCpnt->device->host); | |
1256 | ||
1257 | /* | |
1258 | * Now try to pick up the pieces. For all pending commands, | |
1259 | * free any internal data structures, and basically clear things | |
1260 | * out. We do not try and restart any commands or anything - | |
1261 | * the strategy handler takes care of that crap. | |
1262 | */ | |
1263 | printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->device->host->host_no); | |
1264 | ||
1265 | for (i = 0; i < AHA1542_MAILBOXES; i++) { | |
1266 | if (HOSTDATA(SCpnt->device->host)->SCint[i] != NULL) { | |
1267 | Scsi_Cmnd *SCtmp; | |
1268 | SCtmp = HOSTDATA(SCpnt->device->host)->SCint[i]; | |
1269 | ||
1270 | if (SCtmp->device->soft_reset) { | |
1271 | /* | |
1272 | * If this device implements the soft reset option, | |
1273 | * then it is still holding onto the command, and | |
1274 | * may yet complete it. In this case, we don't | |
1275 | * flush the data. | |
1276 | */ | |
1277 | continue; | |
1278 | } | |
c9475cb0 JJ |
1279 | kfree(SCtmp->host_scribble); |
1280 | SCtmp->host_scribble = NULL; | |
1da177e4 LT |
1281 | HOSTDATA(SCpnt->device->host)->SCint[i] = NULL; |
1282 | HOSTDATA(SCpnt->device->host)->mb[i].status = 0; | |
1283 | } | |
1284 | } | |
1285 | ||
df0ae249 | 1286 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1da177e4 LT |
1287 | return SUCCESS; |
1288 | ||
1289 | fail: | |
df0ae249 | 1290 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1da177e4 LT |
1291 | return FAILED; |
1292 | } | |
1293 | ||
1da177e4 LT |
1294 | static int aha1542_biosparam(struct scsi_device *sdev, |
1295 | struct block_device *bdev, sector_t capacity, int *ip) | |
1296 | { | |
1297 | int translation_algorithm; | |
1298 | int size = capacity; | |
1299 | ||
1300 | translation_algorithm = HOSTDATA(sdev->host)->bios_translation; | |
1301 | ||
1302 | if ((size >> 11) > 1024 && translation_algorithm == BIOS_TRANSLATION_25563) { | |
1303 | /* Please verify that this is the same as what DOS returns */ | |
1304 | ip[0] = 255; | |
1305 | ip[1] = 63; | |
1306 | ip[2] = size / 255 / 63; | |
1307 | } else { | |
1308 | ip[0] = 64; | |
1309 | ip[1] = 32; | |
1310 | ip[2] = size >> 11; | |
1311 | } | |
1312 | ||
1313 | return 0; | |
1314 | } | |
1315 | MODULE_LICENSE("GPL"); | |
1316 | ||
d0be4a7d | 1317 | static struct scsi_host_template driver_template = { |
643a7c43 | 1318 | .module = THIS_MODULE, |
1da177e4 LT |
1319 | .proc_name = "aha1542", |
1320 | .name = "Adaptec 1542", | |
1da177e4 | 1321 | .queuecommand = aha1542_queuecommand, |
1da177e4 LT |
1322 | .eh_device_reset_handler= aha1542_dev_reset, |
1323 | .eh_bus_reset_handler = aha1542_bus_reset, | |
1324 | .eh_host_reset_handler = aha1542_host_reset, | |
1325 | .bios_param = aha1542_biosparam, | |
1326 | .can_queue = AHA1542_MAILBOXES, | |
1327 | .this_id = 7, | |
10be6250 OZ |
1328 | .sg_tablesize = 16, |
1329 | .cmd_per_lun = 1, | |
1da177e4 LT |
1330 | .unchecked_isa_dma = 1, |
1331 | .use_clustering = ENABLE_CLUSTERING, | |
1332 | }; | |
643a7c43 OZ |
1333 | |
1334 | static int aha1542_isa_match(struct device *pdev, unsigned int ndev) | |
1335 | { | |
1336 | struct Scsi_Host *sh = aha1542_hw_init(&driver_template, pdev, ndev); | |
1337 | ||
1338 | if (!sh) | |
1339 | return 0; | |
1340 | ||
1341 | dev_set_drvdata(pdev, sh); | |
1342 | return 1; | |
1343 | } | |
1344 | ||
1345 | static int aha1542_isa_remove(struct device *pdev, | |
1346 | unsigned int ndev) | |
1347 | { | |
1348 | aha1542_release(dev_get_drvdata(pdev)); | |
1349 | dev_set_drvdata(pdev, NULL); | |
1350 | return 0; | |
1351 | } | |
1352 | ||
1353 | static struct isa_driver aha1542_isa_driver = { | |
1354 | .match = aha1542_isa_match, | |
1355 | .remove = aha1542_isa_remove, | |
1356 | .driver = { | |
1357 | .name = "aha1542" | |
1358 | }, | |
1359 | }; | |
1360 | static int isa_registered; | |
1361 | ||
1362 | #ifdef CONFIG_PNP | |
1363 | static struct pnp_device_id aha1542_pnp_ids[] = { | |
1364 | { .id = "ADP1542" }, | |
1365 | { .id = "" } | |
1366 | }; | |
1367 | MODULE_DEVICE_TABLE(pnp, aha1542_pnp_ids); | |
1368 | ||
1369 | static int aha1542_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *id) | |
1370 | { | |
1371 | int indx; | |
1372 | struct Scsi_Host *sh; | |
1373 | ||
1374 | for (indx = 0; indx < ARRAY_SIZE(bases); indx++) { | |
1375 | if (bases[indx]) | |
1376 | continue; | |
1377 | ||
1378 | if (pnp_activate_dev(pdev) < 0) | |
1379 | continue; | |
1380 | ||
1381 | bases[indx] = pnp_port_start(pdev, 0); | |
1382 | ||
1383 | /* The card can be queried for its DMA, we have | |
1384 | the DMA set up that is enough */ | |
1385 | ||
1386 | printk(KERN_INFO "ISAPnP found an AHA1535 at I/O 0x%03X\n", bases[indx]); | |
1387 | } | |
1388 | ||
1389 | sh = aha1542_hw_init(&driver_template, &pdev->dev, indx); | |
1390 | if (!sh) | |
1391 | return -ENODEV; | |
1392 | ||
1393 | pnp_set_drvdata(pdev, sh); | |
1394 | return 0; | |
1395 | } | |
1396 | ||
1397 | static void aha1542_pnp_remove(struct pnp_dev *pdev) | |
1398 | { | |
1399 | aha1542_release(pnp_get_drvdata(pdev)); | |
1400 | pnp_set_drvdata(pdev, NULL); | |
1401 | } | |
1402 | ||
1403 | static struct pnp_driver aha1542_pnp_driver = { | |
1404 | .name = "aha1542", | |
1405 | .id_table = aha1542_pnp_ids, | |
1406 | .probe = aha1542_pnp_probe, | |
1407 | .remove = aha1542_pnp_remove, | |
1408 | }; | |
1409 | static int pnp_registered; | |
1410 | #endif /* CONFIG_PNP */ | |
1411 | ||
1412 | static int __init aha1542_init(void) | |
1413 | { | |
1414 | int ret = 0; | |
1415 | #ifdef MODULE | |
1416 | int atbt = -1; | |
1417 | ||
1418 | bases[0] = aha1542[0]; | |
1419 | setup_buson[0] = aha1542[1]; | |
1420 | setup_busoff[0] = aha1542[2]; | |
1421 | ||
1422 | switch (aha1542[3]) { | |
1423 | case 5: | |
1424 | atbt = 0x00; | |
1425 | break; | |
1426 | case 6: | |
1427 | atbt = 0x04; | |
1428 | break; | |
1429 | case 7: | |
1430 | atbt = 0x01; | |
1431 | break; | |
1432 | case 8: | |
1433 | atbt = 0x02; | |
1434 | break; | |
1435 | case 10: | |
1436 | atbt = 0x03; | |
1437 | break; | |
1438 | }; | |
1439 | setup_dmaspeed[0] = atbt; | |
1440 | #endif | |
1441 | ||
1442 | #ifdef CONFIG_PNP | |
1443 | if (isapnp) { | |
1444 | ret = pnp_register_driver(&aha1542_pnp_driver); | |
1445 | if (!ret) | |
1446 | pnp_registered = 1; | |
1447 | } | |
1448 | #endif | |
1449 | ret = isa_register_driver(&aha1542_isa_driver, MAXBOARDS); | |
1450 | if (!ret) | |
1451 | isa_registered = 1; | |
1452 | ||
1453 | #ifdef CONFIG_PNP | |
1454 | if (pnp_registered) | |
1455 | ret = 0; | |
1456 | #endif | |
1457 | if (isa_registered) | |
1458 | ret = 0; | |
1459 | ||
1460 | return ret; | |
1461 | } | |
1462 | ||
1463 | static void __exit aha1542_exit(void) | |
1464 | { | |
1465 | #ifdef CONFIG_PNP | |
1466 | if (pnp_registered) | |
1467 | pnp_unregister_driver(&aha1542_pnp_driver); | |
1468 | #endif | |
1469 | if (isa_registered) | |
1470 | isa_unregister_driver(&aha1542_isa_driver); | |
1471 | } | |
1472 | ||
1473 | module_init(aha1542_init); | |
1474 | module_exit(aha1542_exit); |