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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 | ||
1da177e4 LT |
121 | static DEFINE_SPINLOCK(aha1542_lock); |
122 | ||
f1bbef63 OZ |
123 | static inline void aha1542_intr_reset(u16 base) |
124 | { | |
125 | outb(IRST, CONTROL(base)); | |
126 | } | |
1da177e4 | 127 | |
2093bfa1 OZ |
128 | static inline bool wait_mask(u16 port, u8 mask, u8 allof, u8 noneof, int timeout) |
129 | { | |
130 | bool delayed = true; | |
131 | ||
132 | if (timeout == 0) { | |
133 | timeout = 3000000; | |
134 | delayed = false; | |
135 | } | |
136 | ||
137 | while (1) { | |
138 | u8 bits = inb(port) & mask; | |
139 | if ((bits & allof) == allof && ((bits & noneof) == 0)) | |
140 | break; | |
141 | if (delayed) | |
142 | mdelay(1); | |
143 | if (--timeout == 0) | |
144 | return false; | |
145 | } | |
146 | ||
147 | return true; | |
148 | } | |
1da177e4 | 149 | |
1da177e4 LT |
150 | /* This is a bit complicated, but we need to make sure that an interrupt |
151 | routine does not send something out while we are in the middle of this. | |
152 | Fortunately, it is only at boot time that multi-byte messages | |
153 | are ever sent. */ | |
0c2b6481 | 154 | static int aha1542_outb(unsigned int base, u8 cmd) |
1da177e4 | 155 | { |
0c2b6481 OZ |
156 | unsigned long flags; |
157 | ||
158 | while (1) { | |
159 | if (!wait_mask(STATUS(base), CDF, 0, CDF, 0)) { | |
160 | printk(KERN_ERR "aha1542_outb failed"); | |
161 | return 1; | |
1da177e4 | 162 | } |
1da177e4 | 163 | spin_lock_irqsave(&aha1542_lock, flags); |
0c2b6481 OZ |
164 | if (inb(STATUS(base)) & CDF) { |
165 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
166 | continue; | |
1da177e4 | 167 | } |
0c2b6481 | 168 | outb(cmd, DATA(base)); |
1da177e4 | 169 | spin_unlock_irqrestore(&aha1542_lock, flags); |
0c2b6481 | 170 | return 0; |
1da177e4 | 171 | } |
0c2b6481 OZ |
172 | } |
173 | ||
174 | static int aha1542_out(unsigned int base, u8 *cmdp, int len) | |
175 | { | |
176 | unsigned long flags; | |
177 | ||
178 | spin_lock_irqsave(&aha1542_lock, flags); | |
179 | while (len--) { | |
180 | if (!wait_mask(STATUS(base), CDF, 0, CDF, 0)) { | |
181 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
182 | printk(KERN_ERR "aha1542_out failed(%d): ", len + 1); | |
183 | return 1; | |
184 | } | |
185 | outb(*cmdp++, DATA(base)); | |
186 | } | |
187 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
188 | ||
1da177e4 | 189 | return 0; |
1da177e4 LT |
190 | } |
191 | ||
192 | /* Only used at boot time, so we do not need to worry about latency as much | |
193 | here */ | |
194 | ||
f8846be3 | 195 | static int aha1542_in(unsigned int base, u8 *cmdp, int len, int timeout) |
1da177e4 LT |
196 | { |
197 | unsigned long flags; | |
198 | ||
199 | spin_lock_irqsave(&aha1542_lock, flags); | |
200 | while (len--) { | |
f8846be3 | 201 | if (!wait_mask(STATUS(base), DF, DF, 0, timeout)) |
2093bfa1 | 202 | goto fail; |
1da177e4 LT |
203 | *cmdp++ = inb(DATA(base)); |
204 | } | |
205 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
206 | return 0; | |
207 | fail: | |
208 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
f8846be3 OZ |
209 | if (timeout == 0) |
210 | printk(KERN_ERR "aha1542_in failed(%d): ", len + 1); | |
1da177e4 LT |
211 | return 1; |
212 | } | |
213 | ||
214 | static int makecode(unsigned hosterr, unsigned scsierr) | |
215 | { | |
216 | switch (hosterr) { | |
217 | case 0x0: | |
218 | case 0xa: /* Linked command complete without error and linked normally */ | |
219 | case 0xb: /* Linked command complete without error, interrupt generated */ | |
220 | hosterr = 0; | |
221 | break; | |
222 | ||
223 | case 0x11: /* Selection time out-The initiator selection or target | |
224 | reselection was not complete within the SCSI Time out period */ | |
225 | hosterr = DID_TIME_OUT; | |
226 | break; | |
227 | ||
228 | case 0x12: /* Data overrun/underrun-The target attempted to transfer more data | |
229 | than was allocated by the Data Length field or the sum of the | |
230 | Scatter / Gather Data Length fields. */ | |
231 | ||
232 | case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */ | |
233 | ||
234 | case 0x15: /* MBO command was not 00, 01 or 02-The first byte of the CB was | |
235 | invalid. This usually indicates a software failure. */ | |
236 | ||
237 | case 0x16: /* Invalid CCB Operation Code-The first byte of the CCB was invalid. | |
238 | This usually indicates a software failure. */ | |
239 | ||
240 | case 0x17: /* Linked CCB does not have the same LUN-A subsequent CCB of a set | |
241 | of linked CCB's does not specify the same logical unit number as | |
242 | the first. */ | |
243 | case 0x18: /* Invalid Target Direction received from Host-The direction of a | |
244 | Target Mode CCB was invalid. */ | |
245 | ||
246 | case 0x19: /* Duplicate CCB Received in Target Mode-More than once CCB was | |
247 | received to service data transfer between the same target LUN | |
248 | and initiator SCSI ID in the same direction. */ | |
249 | ||
250 | case 0x1a: /* Invalid CCB or Segment List Parameter-A segment list with a zero | |
251 | length segment or invalid segment list boundaries was received. | |
252 | A CCB parameter was invalid. */ | |
253 | DEB(printk("Aha1542: %x %x\n", hosterr, scsierr)); | |
254 | hosterr = DID_ERROR; /* Couldn't find any better */ | |
255 | break; | |
256 | ||
257 | case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus | |
258 | phase sequence was requested by the target. The host adapter | |
259 | will generate a SCSI Reset Condition, notifying the host with | |
260 | a SCRD interrupt */ | |
261 | hosterr = DID_RESET; | |
262 | break; | |
263 | default: | |
264 | printk(KERN_ERR "aha1542: makecode: unknown hoststatus %x\n", hosterr); | |
265 | break; | |
266 | } | |
267 | return scsierr | (hosterr << 16); | |
268 | } | |
269 | ||
643a7c43 | 270 | static int aha1542_test_port(int bse, struct Scsi_Host *shpnt) |
1da177e4 | 271 | { |
cb5b570c OZ |
272 | u8 inquiry_result[4]; |
273 | u8 *cmdp; | |
1da177e4 LT |
274 | int len; |
275 | volatile int debug = 0; | |
276 | ||
277 | /* Quick and dirty test for presence of the card. */ | |
278 | if (inb(STATUS(bse)) == 0xff) | |
279 | return 0; | |
280 | ||
281 | /* Reset the adapter. I ought to make a hard reset, but it's not really necessary */ | |
282 | ||
283 | /* DEB(printk("aha1542_test_port called \n")); */ | |
284 | ||
285 | /* In case some other card was probing here, reset interrupts */ | |
286 | aha1542_intr_reset(bse); /* reset interrupts, so they don't block */ | |
287 | ||
288 | outb(SRST | IRST /*|SCRST */ , CONTROL(bse)); | |
289 | ||
290 | mdelay(20); /* Wait a little bit for things to settle down. */ | |
291 | ||
292 | debug = 1; | |
293 | /* Expect INIT and IDLE, any of the others are bad */ | |
2093bfa1 OZ |
294 | if (!wait_mask(STATUS(bse), STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0)) |
295 | goto fail; | |
1da177e4 LT |
296 | |
297 | debug = 2; | |
298 | /* Shouldn't have generated any interrupts during reset */ | |
299 | if (inb(INTRFLAGS(bse)) & INTRMASK) | |
300 | goto fail; | |
301 | ||
302 | ||
303 | /* Perform a host adapter inquiry instead so we do not need to set | |
304 | up the mailboxes ahead of time */ | |
305 | ||
0c2b6481 | 306 | aha1542_outb(bse, CMD_INQUIRY); |
1da177e4 LT |
307 | |
308 | debug = 3; | |
309 | len = 4; | |
310 | cmdp = &inquiry_result[0]; | |
311 | ||
312 | while (len--) { | |
2093bfa1 OZ |
313 | if (!wait_mask(STATUS(bse), DF, DF, 0, 0)) |
314 | goto fail; | |
1da177e4 LT |
315 | *cmdp++ = inb(DATA(bse)); |
316 | } | |
317 | ||
318 | debug = 8; | |
319 | /* Reading port should reset DF */ | |
320 | if (inb(STATUS(bse)) & DF) | |
321 | goto fail; | |
322 | ||
323 | debug = 9; | |
324 | /* When HACC, command is completed, and we're though testing */ | |
2093bfa1 OZ |
325 | if (!wait_mask(INTRFLAGS(bse), HACC, HACC, 0, 0)) |
326 | goto fail; | |
1da177e4 LT |
327 | /* now initialize adapter */ |
328 | ||
329 | debug = 10; | |
330 | /* Clear interrupts */ | |
331 | outb(IRST, CONTROL(bse)); | |
332 | ||
333 | debug = 11; | |
334 | ||
335 | return debug; /* 1 = ok */ | |
336 | fail: | |
337 | return 0; /* 0 = not ok */ | |
338 | } | |
339 | ||
09a44833 | 340 | static int aha1542_restart(struct Scsi_Host *shost) |
1da177e4 | 341 | { |
09a44833 OZ |
342 | struct aha1542_hostdata *aha1542 = shost_priv(shost); |
343 | int i; | |
344 | int count = 0; | |
1da177e4 | 345 | |
09a44833 OZ |
346 | for (i = 0; i < AHA1542_MAILBOXES; i++) |
347 | if (aha1542->SCint[i] && | |
348 | !(aha1542->SCint[i]->device->soft_reset)) { | |
349 | count++; | |
350 | } | |
351 | printk(KERN_DEBUG "Potential to restart %d stalled commands...\n", count); | |
352 | ||
353 | return 0; | |
1da177e4 LT |
354 | } |
355 | ||
356 | /* A "high" level interrupt handler */ | |
87c4d7bc | 357 | static void aha1542_intr_handle(struct Scsi_Host *shost) |
1da177e4 | 358 | { |
e98878f7 | 359 | struct aha1542_hostdata *aha1542 = shost_priv(shost); |
1da177e4 LT |
360 | void (*my_done) (Scsi_Cmnd *) = NULL; |
361 | int errstatus, mbi, mbo, mbistatus; | |
362 | int number_serviced; | |
363 | unsigned long flags; | |
364 | Scsi_Cmnd *SCtmp; | |
365 | int flag; | |
366 | int needs_restart; | |
e98878f7 OZ |
367 | struct mailbox *mb = aha1542->mb; |
368 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 LT |
369 | |
370 | #ifdef DEBUG | |
371 | { | |
372 | flag = inb(INTRFLAGS(shost->io_port)); | |
373 | printk(KERN_DEBUG "aha1542_intr_handle: "); | |
374 | if (!(flag & ANYINTR)) | |
375 | printk("no interrupt?"); | |
376 | if (flag & MBIF) | |
377 | printk("MBIF "); | |
378 | if (flag & MBOA) | |
379 | printk("MBOF "); | |
380 | if (flag & HACC) | |
381 | printk("HACC "); | |
382 | if (flag & SCRD) | |
383 | printk("SCRD "); | |
384 | printk("status %02x\n", inb(STATUS(shost->io_port))); | |
385 | }; | |
386 | #endif | |
387 | number_serviced = 0; | |
388 | needs_restart = 0; | |
389 | ||
390 | while (1 == 1) { | |
391 | flag = inb(INTRFLAGS(shost->io_port)); | |
392 | ||
393 | /* Check for unusual interrupts. If any of these happen, we should | |
394 | probably do something special, but for now just printing a message | |
395 | is sufficient. A SCSI reset detected is something that we really | |
396 | need to deal with in some way. */ | |
397 | if (flag & ~MBIF) { | |
398 | if (flag & MBOA) | |
399 | printk("MBOF "); | |
400 | if (flag & HACC) | |
401 | printk("HACC "); | |
402 | if (flag & SCRD) { | |
403 | needs_restart = 1; | |
404 | printk("SCRD "); | |
405 | } | |
406 | } | |
407 | aha1542_intr_reset(shost->io_port); | |
408 | ||
409 | spin_lock_irqsave(&aha1542_lock, flags); | |
e98878f7 | 410 | mbi = aha1542->aha1542_last_mbi_used + 1; |
1da177e4 LT |
411 | if (mbi >= 2 * AHA1542_MAILBOXES) |
412 | mbi = AHA1542_MAILBOXES; | |
413 | ||
414 | do { | |
415 | if (mb[mbi].status != 0) | |
416 | break; | |
417 | mbi++; | |
418 | if (mbi >= 2 * AHA1542_MAILBOXES) | |
419 | mbi = AHA1542_MAILBOXES; | |
e98878f7 | 420 | } while (mbi != aha1542->aha1542_last_mbi_used); |
1da177e4 LT |
421 | |
422 | if (mb[mbi].status == 0) { | |
423 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
424 | /* Hmm, no mail. Must have read it the last time around */ | |
425 | if (!number_serviced && !needs_restart) | |
426 | printk(KERN_WARNING "aha1542.c: interrupt received, but no mail.\n"); | |
427 | /* We detected a reset. Restart all pending commands for | |
428 | devices that use the hard reset option */ | |
429 | if (needs_restart) | |
430 | aha1542_restart(shost); | |
431 | return; | |
432 | }; | |
433 | ||
10be6250 | 434 | mbo = (scsi2int(mb[mbi].ccbptr) - (isa_virt_to_bus(&ccb[0]))) / sizeof(struct ccb); |
1da177e4 LT |
435 | mbistatus = mb[mbi].status; |
436 | mb[mbi].status = 0; | |
e98878f7 | 437 | aha1542->aha1542_last_mbi_used = mbi; |
1da177e4 LT |
438 | spin_unlock_irqrestore(&aha1542_lock, flags); |
439 | ||
440 | #ifdef DEBUG | |
441 | { | |
442 | if (ccb[mbo].tarstat | ccb[mbo].hastat) | |
443 | printk(KERN_DEBUG "aha1542_command: returning %x (status %d)\n", | |
444 | ccb[mbo].tarstat + ((int) ccb[mbo].hastat << 16), mb[mbi].status); | |
445 | }; | |
446 | #endif | |
447 | ||
448 | if (mbistatus == 3) | |
449 | continue; /* Aborted command not found */ | |
450 | ||
451 | #ifdef DEBUG | |
452 | printk(KERN_DEBUG "...done %d %d\n", mbo, mbi); | |
453 | #endif | |
454 | ||
e98878f7 | 455 | SCtmp = aha1542->SCint[mbo]; |
1da177e4 LT |
456 | |
457 | if (!SCtmp || !SCtmp->scsi_done) { | |
458 | printk(KERN_WARNING "aha1542_intr_handle: Unexpected interrupt\n"); | |
459 | printk(KERN_WARNING "tarstat=%x, hastat=%x idlun=%x ccb#=%d \n", ccb[mbo].tarstat, | |
460 | ccb[mbo].hastat, ccb[mbo].idlun, mbo); | |
461 | return; | |
462 | } | |
463 | my_done = SCtmp->scsi_done; | |
c9475cb0 JJ |
464 | kfree(SCtmp->host_scribble); |
465 | SCtmp->host_scribble = NULL; | |
1da177e4 LT |
466 | /* Fetch the sense data, and tuck it away, in the required slot. The |
467 | Adaptec automatically fetches it, and there is no guarantee that | |
468 | we will still have it in the cdb when we come back */ | |
469 | if (ccb[mbo].tarstat == 2) | |
470 | memcpy(SCtmp->sense_buffer, &ccb[mbo].cdb[ccb[mbo].cdblen], | |
b80ca4f7 | 471 | SCSI_SENSE_BUFFERSIZE); |
1da177e4 LT |
472 | |
473 | ||
474 | /* is there mail :-) */ | |
475 | ||
476 | /* more error checking left out here */ | |
477 | if (mbistatus != 1) | |
478 | /* This is surely wrong, but I don't know what's right */ | |
479 | errstatus = makecode(ccb[mbo].hastat, ccb[mbo].tarstat); | |
480 | else | |
481 | errstatus = 0; | |
482 | ||
483 | #ifdef DEBUG | |
484 | if (errstatus) | |
485 | printk(KERN_DEBUG "(aha1542 error:%x %x %x) ", errstatus, | |
486 | ccb[mbo].hastat, ccb[mbo].tarstat); | |
487 | #endif | |
488 | ||
489 | if (ccb[mbo].tarstat == 2) { | |
490 | #ifdef DEBUG | |
491 | int i; | |
492 | #endif | |
493 | DEB(printk("aha1542_intr_handle: sense:")); | |
494 | #ifdef DEBUG | |
495 | for (i = 0; i < 12; i++) | |
496 | printk("%02x ", ccb[mbo].cdb[ccb[mbo].cdblen + i]); | |
497 | printk("\n"); | |
498 | #endif | |
499 | /* | |
500 | DEB(printk("aha1542_intr_handle: buf:")); | |
501 | for (i = 0; i < bufflen; i++) | |
502 | printk("%02x ", ((unchar *)buff)[i]); | |
503 | printk("\n"); | |
504 | */ | |
505 | } | |
506 | DEB(if (errstatus) printk("aha1542_intr_handle: returning %6x\n", errstatus)); | |
507 | SCtmp->result = errstatus; | |
e98878f7 OZ |
508 | aha1542->SCint[mbo] = NULL; /* This effectively frees up the mailbox slot, as |
509 | far as queuecommand is concerned */ | |
1da177e4 LT |
510 | my_done(SCtmp); |
511 | number_serviced++; | |
512 | }; | |
513 | } | |
514 | ||
09a44833 OZ |
515 | /* A quick wrapper for do_aha1542_intr_handle to grab the spin lock */ |
516 | static irqreturn_t do_aha1542_intr_handle(int dummy, void *dev_id) | |
517 | { | |
518 | unsigned long flags; | |
519 | struct Scsi_Host *shost = dev_id; | |
520 | ||
521 | spin_lock_irqsave(shost->host_lock, flags); | |
522 | aha1542_intr_handle(shost); | |
523 | spin_unlock_irqrestore(shost->host_lock, flags); | |
524 | return IRQ_HANDLED; | |
525 | } | |
526 | ||
f281233d | 527 | static int aha1542_queuecommand_lck(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *)) |
1da177e4 | 528 | { |
e98878f7 | 529 | struct aha1542_hostdata *aha1542 = shost_priv(SCpnt->device->host); |
cb5b570c OZ |
530 | u8 direction; |
531 | u8 *cmd = (u8 *) SCpnt->cmnd; | |
532 | u8 target = SCpnt->device->id; | |
533 | u8 lun = SCpnt->device->lun; | |
1da177e4 | 534 | unsigned long flags; |
fc3fdfcc | 535 | int bufflen = scsi_bufflen(SCpnt); |
1da177e4 | 536 | int mbo; |
e98878f7 OZ |
537 | struct mailbox *mb = aha1542->mb; |
538 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 LT |
539 | |
540 | DEB(int i); | |
541 | ||
1da177e4 LT |
542 | DEB(if (target > 1) { |
543 | SCpnt->result = DID_TIME_OUT << 16; | |
544 | done(SCpnt); return 0; | |
545 | } | |
546 | ); | |
547 | ||
548 | if (*cmd == REQUEST_SENSE) { | |
549 | /* Don't do the command - we have the sense data already */ | |
1da177e4 LT |
550 | SCpnt->result = 0; |
551 | done(SCpnt); | |
552 | return 0; | |
553 | } | |
554 | #ifdef DEBUG | |
555 | if (*cmd == READ_10 || *cmd == WRITE_10) | |
556 | i = xscsi2int(cmd + 2); | |
557 | else if (*cmd == READ_6 || *cmd == WRITE_6) | |
558 | i = scsi2int(cmd + 2); | |
559 | else | |
560 | i = -1; | |
561 | if (done) | |
562 | printk(KERN_DEBUG "aha1542_queuecommand: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen); | |
563 | else | |
564 | printk(KERN_DEBUG "aha1542_command: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen); | |
1da177e4 LT |
565 | printk(KERN_DEBUG "aha1542_queuecommand: dumping scsi cmd:"); |
566 | for (i = 0; i < SCpnt->cmd_len; i++) | |
567 | printk("%02x ", cmd[i]); | |
568 | printk("\n"); | |
569 | if (*cmd == WRITE_10 || *cmd == WRITE_6) | |
570 | return 0; /* we are still testing, so *don't* write */ | |
571 | #endif | |
572 | /* Use the outgoing mailboxes in a round-robin fashion, because this | |
573 | is how the host adapter will scan for them */ | |
574 | ||
575 | spin_lock_irqsave(&aha1542_lock, flags); | |
e98878f7 | 576 | mbo = aha1542->aha1542_last_mbo_used + 1; |
1da177e4 LT |
577 | if (mbo >= AHA1542_MAILBOXES) |
578 | mbo = 0; | |
579 | ||
580 | do { | |
e98878f7 | 581 | if (mb[mbo].status == 0 && aha1542->SCint[mbo] == NULL) |
1da177e4 LT |
582 | break; |
583 | mbo++; | |
584 | if (mbo >= AHA1542_MAILBOXES) | |
585 | mbo = 0; | |
e98878f7 | 586 | } while (mbo != aha1542->aha1542_last_mbo_used); |
1da177e4 | 587 | |
e98878f7 | 588 | if (mb[mbo].status || aha1542->SCint[mbo]) |
1da177e4 LT |
589 | panic("Unable to find empty mailbox for aha1542.\n"); |
590 | ||
e98878f7 OZ |
591 | aha1542->SCint[mbo] = SCpnt; /* This will effectively prevent someone else from |
592 | screwing with this cdb. */ | |
1da177e4 | 593 | |
e98878f7 | 594 | aha1542->aha1542_last_mbo_used = mbo; |
1da177e4 LT |
595 | spin_unlock_irqrestore(&aha1542_lock, flags); |
596 | ||
597 | #ifdef DEBUG | |
598 | printk(KERN_DEBUG "Sending command (%d %x)...", mbo, done); | |
599 | #endif | |
600 | ||
10be6250 | 601 | any2scsi(mb[mbo].ccbptr, isa_virt_to_bus(&ccb[mbo])); /* This gets trashed for some reason */ |
1da177e4 LT |
602 | |
603 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
604 | ||
605 | ccb[mbo].cdblen = SCpnt->cmd_len; | |
606 | ||
607 | direction = 0; | |
608 | if (*cmd == READ_10 || *cmd == READ_6) | |
609 | direction = 8; | |
610 | else if (*cmd == WRITE_10 || *cmd == WRITE_6) | |
611 | direction = 16; | |
612 | ||
613 | memcpy(ccb[mbo].cdb, cmd, ccb[mbo].cdblen); | |
614 | ||
fc3fdfcc | 615 | if (bufflen) { |
51cf2249 | 616 | struct scatterlist *sg; |
1da177e4 LT |
617 | struct chain *cptr; |
618 | #ifdef DEBUG | |
619 | unsigned char *ptr; | |
620 | #endif | |
fc3fdfcc | 621 | int i, sg_count = scsi_sg_count(SCpnt); |
1da177e4 | 622 | ccb[mbo].op = 2; /* SCSI Initiator Command w/scatter-gather */ |
fc3fdfcc BH |
623 | SCpnt->host_scribble = kmalloc(sizeof(*cptr)*sg_count, |
624 | GFP_KERNEL | GFP_DMA); | |
1da177e4 LT |
625 | cptr = (struct chain *) SCpnt->host_scribble; |
626 | if (cptr == NULL) { | |
627 | /* free the claimed mailbox slot */ | |
e98878f7 | 628 | aha1542->SCint[mbo] = NULL; |
1da177e4 LT |
629 | return SCSI_MLQUEUE_HOST_BUSY; |
630 | } | |
fc3fdfcc | 631 | scsi_for_each_sg(SCpnt, sg, sg_count, i) { |
10be6250 OZ |
632 | any2scsi(cptr[i].dataptr, isa_page_to_bus(sg_page(sg)) |
633 | + sg->offset); | |
51cf2249 | 634 | any2scsi(cptr[i].datalen, sg->length); |
1da177e4 | 635 | }; |
fc3fdfcc | 636 | any2scsi(ccb[mbo].datalen, sg_count * sizeof(struct chain)); |
10be6250 | 637 | any2scsi(ccb[mbo].dataptr, isa_virt_to_bus(cptr)); |
1da177e4 LT |
638 | #ifdef DEBUG |
639 | printk("cptr %x: ", cptr); | |
640 | ptr = (unsigned char *) cptr; | |
641 | for (i = 0; i < 18; i++) | |
642 | printk("%02x ", ptr[i]); | |
643 | #endif | |
644 | } else { | |
645 | ccb[mbo].op = 0; /* SCSI Initiator Command */ | |
646 | SCpnt->host_scribble = NULL; | |
fc3fdfcc BH |
647 | any2scsi(ccb[mbo].datalen, 0); |
648 | any2scsi(ccb[mbo].dataptr, 0); | |
1da177e4 LT |
649 | }; |
650 | ccb[mbo].idlun = (target & 7) << 5 | direction | (lun & 7); /*SCSI Target Id */ | |
651 | ccb[mbo].rsalen = 16; | |
652 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
653 | ccb[mbo].commlinkid = 0; | |
654 | ||
655 | #ifdef DEBUG | |
656 | { | |
657 | int i; | |
658 | printk(KERN_DEBUG "aha1542_command: sending.. "); | |
659 | for (i = 0; i < sizeof(ccb[mbo]) - 10; i++) | |
cb5b570c | 660 | printk("%02x ", ((u8 *) &ccb[mbo])[i]); |
1da177e4 LT |
661 | }; |
662 | #endif | |
663 | ||
664 | if (done) { | |
f232d538 | 665 | DEB(printk("aha1542_queuecommand: now waiting for interrupt ")); |
1da177e4 LT |
666 | SCpnt->scsi_done = done; |
667 | mb[mbo].status = 1; | |
0c2b6481 | 668 | aha1542_outb(SCpnt->device->host->io_port, CMD_START_SCSI); |
1da177e4 LT |
669 | } else |
670 | printk("aha1542_queuecommand: done can't be NULL\n"); | |
671 | ||
672 | return 0; | |
673 | } | |
674 | ||
f281233d JG |
675 | static DEF_SCSI_QCMD(aha1542_queuecommand) |
676 | ||
1da177e4 LT |
677 | /* Initialize mailboxes */ |
678 | static void setup_mailboxes(int bse, struct Scsi_Host *shpnt) | |
679 | { | |
e98878f7 | 680 | struct aha1542_hostdata *aha1542 = shost_priv(shpnt); |
1da177e4 | 681 | int i; |
e98878f7 OZ |
682 | struct mailbox *mb = aha1542->mb; |
683 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 | 684 | |
cb5b570c | 685 | u8 cmd[5] = { CMD_MBINIT, AHA1542_MAILBOXES, 0, 0, 0}; |
1da177e4 | 686 | |
1da177e4 LT |
687 | for (i = 0; i < AHA1542_MAILBOXES; i++) { |
688 | mb[i].status = mb[AHA1542_MAILBOXES + i].status = 0; | |
10be6250 | 689 | any2scsi(mb[i].ccbptr, isa_virt_to_bus(&ccb[i])); |
1da177e4 LT |
690 | }; |
691 | aha1542_intr_reset(bse); /* reset interrupts, so they don't block */ | |
10be6250 | 692 | any2scsi((cmd + 2), isa_virt_to_bus(mb)); |
1da177e4 | 693 | aha1542_out(bse, cmd, 5); |
2093bfa1 OZ |
694 | if (!wait_mask(INTRFLAGS(bse), INTRMASK, HACC, 0, 0)) |
695 | goto fail; | |
1da177e4 LT |
696 | while (0) { |
697 | fail: | |
698 | printk(KERN_ERR "aha1542_detect: failed setting up mailboxes\n"); | |
699 | } | |
700 | aha1542_intr_reset(bse); | |
701 | } | |
702 | ||
643a7c43 | 703 | static int aha1542_getconfig(int base_io, unsigned char *irq_level, unsigned char *dma_chan, unsigned char *scsi_id) |
1da177e4 | 704 | { |
cb5b570c | 705 | u8 inquiry_result[3]; |
1da177e4 LT |
706 | int i; |
707 | i = inb(STATUS(base_io)); | |
708 | if (i & DF) { | |
709 | i = inb(DATA(base_io)); | |
710 | }; | |
0c2b6481 | 711 | aha1542_outb(base_io, CMD_RETCONF); |
f8846be3 | 712 | aha1542_in(base_io, inquiry_result, 3, 0); |
2093bfa1 OZ |
713 | if (!wait_mask(INTRFLAGS(base_io), INTRMASK, HACC, 0, 0)) |
714 | goto fail; | |
1da177e4 LT |
715 | while (0) { |
716 | fail: | |
717 | printk(KERN_ERR "aha1542_detect: query board settings\n"); | |
718 | } | |
719 | aha1542_intr_reset(base_io); | |
720 | switch (inquiry_result[0]) { | |
721 | case 0x80: | |
722 | *dma_chan = 7; | |
723 | break; | |
724 | case 0x40: | |
725 | *dma_chan = 6; | |
726 | break; | |
727 | case 0x20: | |
728 | *dma_chan = 5; | |
729 | break; | |
730 | case 0x01: | |
731 | *dma_chan = 0; | |
732 | break; | |
733 | case 0: | |
734 | /* This means that the adapter, although Adaptec 1542 compatible, doesn't use a DMA channel. | |
735 | Currently only aware of the BusLogic BT-445S VL-Bus adapter which needs this. */ | |
736 | *dma_chan = 0xFF; | |
737 | break; | |
738 | default: | |
739 | printk(KERN_ERR "Unable to determine Adaptec DMA priority. Disabling board\n"); | |
740 | return -1; | |
741 | }; | |
742 | switch (inquiry_result[1]) { | |
743 | case 0x40: | |
744 | *irq_level = 15; | |
745 | break; | |
746 | case 0x20: | |
747 | *irq_level = 14; | |
748 | break; | |
749 | case 0x8: | |
750 | *irq_level = 12; | |
751 | break; | |
752 | case 0x4: | |
753 | *irq_level = 11; | |
754 | break; | |
755 | case 0x2: | |
756 | *irq_level = 10; | |
757 | break; | |
758 | case 0x1: | |
759 | *irq_level = 9; | |
760 | break; | |
761 | default: | |
762 | printk(KERN_ERR "Unable to determine Adaptec IRQ level. Disabling board\n"); | |
763 | return -1; | |
764 | }; | |
765 | *scsi_id = inquiry_result[2] & 7; | |
766 | return 0; | |
767 | } | |
768 | ||
769 | /* This function should only be called for 1542C boards - we can detect | |
770 | the special firmware settings and unlock the board */ | |
771 | ||
643a7c43 | 772 | static int aha1542_mbenable(int base) |
1da177e4 | 773 | { |
cb5b570c OZ |
774 | static u8 mbenable_cmd[3]; |
775 | static u8 mbenable_result[2]; | |
1da177e4 LT |
776 | int retval; |
777 | ||
778 | retval = BIOS_TRANSLATION_6432; | |
779 | ||
0c2b6481 | 780 | aha1542_outb(base, CMD_EXTBIOS); |
f8846be3 | 781 | if (aha1542_in(base, mbenable_result, 2, 100)) |
1da177e4 | 782 | return retval; |
2093bfa1 OZ |
783 | if (!wait_mask(INTRFLAGS(base), INTRMASK, HACC, 0, 100)) |
784 | goto fail; | |
1da177e4 LT |
785 | aha1542_intr_reset(base); |
786 | ||
787 | if ((mbenable_result[0] & 0x08) || mbenable_result[1]) { | |
788 | mbenable_cmd[0] = CMD_MBENABLE; | |
789 | mbenable_cmd[1] = 0; | |
790 | mbenable_cmd[2] = mbenable_result[1]; | |
791 | ||
792 | if ((mbenable_result[0] & 0x08) && (mbenable_result[1] & 0x03)) | |
793 | retval = BIOS_TRANSLATION_25563; | |
794 | ||
795 | aha1542_out(base, mbenable_cmd, 3); | |
2093bfa1 OZ |
796 | if (!wait_mask(INTRFLAGS(base), INTRMASK, HACC, 0, 0)) |
797 | goto fail; | |
1da177e4 LT |
798 | }; |
799 | while (0) { | |
800 | fail: | |
801 | printk(KERN_ERR "aha1542_mbenable: Mailbox init failed\n"); | |
802 | } | |
803 | aha1542_intr_reset(base); | |
804 | return retval; | |
805 | } | |
806 | ||
807 | /* Query the board to find out if it is a 1542 or a 1740, or whatever. */ | |
643a7c43 | 808 | static int aha1542_query(int base_io, int *transl) |
1da177e4 | 809 | { |
cb5b570c | 810 | u8 inquiry_result[4]; |
1da177e4 LT |
811 | int i; |
812 | i = inb(STATUS(base_io)); | |
813 | if (i & DF) { | |
814 | i = inb(DATA(base_io)); | |
815 | }; | |
0c2b6481 | 816 | aha1542_outb(base_io, CMD_INQUIRY); |
f8846be3 | 817 | aha1542_in(base_io, inquiry_result, 4, 0); |
2093bfa1 OZ |
818 | if (!wait_mask(INTRFLAGS(base_io), INTRMASK, HACC, 0, 0)) |
819 | goto fail; | |
1da177e4 LT |
820 | while (0) { |
821 | fail: | |
822 | printk(KERN_ERR "aha1542_detect: query card type\n"); | |
823 | } | |
824 | aha1542_intr_reset(base_io); | |
825 | ||
826 | *transl = BIOS_TRANSLATION_6432; /* Default case */ | |
827 | ||
828 | /* For an AHA1740 series board, we ignore the board since there is a | |
829 | hardware bug which can lead to wrong blocks being returned if the board | |
830 | is operating in the 1542 emulation mode. Since there is an extended mode | |
831 | driver, we simply ignore the board and let the 1740 driver pick it up. | |
832 | */ | |
833 | ||
834 | if (inquiry_result[0] == 0x43) { | |
835 | printk(KERN_INFO "aha1542.c: Emulation mode not supported for AHA 174N hardware.\n"); | |
836 | return 1; | |
837 | }; | |
838 | ||
839 | /* Always call this - boards that do not support extended bios translation | |
840 | will ignore the command, and we will set the proper default */ | |
841 | ||
842 | *transl = aha1542_mbenable(base_io); | |
843 | ||
844 | return 0; | |
845 | } | |
846 | ||
847 | #ifndef MODULE | |
848 | static char *setup_str[MAXBOARDS] __initdata; | |
849 | static int setup_idx = 0; | |
850 | ||
851 | static void __init aha1542_setup(char *str, int *ints) | |
852 | { | |
853 | const char *ahausage = "aha1542: usage: aha1542=<PORTBASE>[,<BUSON>,<BUSOFF>[,<DMASPEED>]]\n"; | |
854 | int setup_portbase; | |
855 | ||
856 | if (setup_idx >= MAXBOARDS) { | |
857 | printk(KERN_ERR "aha1542: aha1542_setup called too many times! Bad LILO params ?\n"); | |
858 | printk(KERN_ERR " Entryline 1: %s\n", setup_str[0]); | |
859 | printk(KERN_ERR " Entryline 2: %s\n", setup_str[1]); | |
860 | printk(KERN_ERR " This line: %s\n", str); | |
861 | return; | |
862 | } | |
863 | if (ints[0] < 1 || ints[0] > 4) { | |
864 | printk(KERN_ERR "aha1542: %s\n", str); | |
865 | printk(ahausage); | |
866 | printk(KERN_ERR "aha1542: Wrong parameters may cause system malfunction.. We try anyway..\n"); | |
867 | } | |
868 | setup_called[setup_idx] = ints[0]; | |
869 | setup_str[setup_idx] = str; | |
870 | ||
871 | setup_portbase = ints[0] >= 1 ? ints[1] : 0; /* Preserve the default value.. */ | |
872 | setup_buson[setup_idx] = ints[0] >= 2 ? ints[2] : 7; | |
873 | setup_busoff[setup_idx] = ints[0] >= 3 ? ints[3] : 5; | |
874 | if (ints[0] >= 4) | |
875 | { | |
876 | int atbt = -1; | |
877 | switch (ints[4]) { | |
878 | case 5: | |
879 | atbt = 0x00; | |
880 | break; | |
881 | case 6: | |
882 | atbt = 0x04; | |
883 | break; | |
884 | case 7: | |
885 | atbt = 0x01; | |
886 | break; | |
887 | case 8: | |
888 | atbt = 0x02; | |
889 | break; | |
890 | case 10: | |
891 | atbt = 0x03; | |
892 | break; | |
893 | default: | |
894 | printk(KERN_ERR "aha1542: %s\n", str); | |
895 | printk(ahausage); | |
896 | printk(KERN_ERR "aha1542: Valid values for DMASPEED are 5-8, 10 MB/s. Using jumper defaults.\n"); | |
897 | break; | |
898 | } | |
899 | setup_dmaspeed[setup_idx] = atbt; | |
900 | } | |
901 | if (setup_portbase != 0) | |
902 | bases[setup_idx] = setup_portbase; | |
903 | ||
904 | ++setup_idx; | |
905 | } | |
906 | ||
907 | static int __init do_setup(char *str) | |
908 | { | |
909 | int ints[5]; | |
910 | ||
911 | int count=setup_idx; | |
912 | ||
6391a113 | 913 | get_options(str, ARRAY_SIZE(ints), ints); |
1da177e4 LT |
914 | aha1542_setup(str,ints); |
915 | ||
916 | return count<setup_idx; | |
917 | } | |
918 | ||
919 | __setup("aha1542=",do_setup); | |
920 | #endif | |
921 | ||
922 | /* return non-zero on detection */ | |
643a7c43 | 923 | static struct Scsi_Host *aha1542_hw_init(struct scsi_host_template *tpnt, struct device *pdev, int indx) |
1da177e4 LT |
924 | { |
925 | unsigned char dma_chan; | |
926 | unsigned char irq_level; | |
927 | unsigned char scsi_id; | |
928 | unsigned long flags; | |
929 | unsigned int base_io; | |
930 | int trans; | |
931 | struct Scsi_Host *shpnt = NULL; | |
e98878f7 | 932 | struct aha1542_hostdata *aha1542; |
1da177e4 LT |
933 | |
934 | DEB(printk("aha1542_detect: \n")); | |
935 | ||
936 | tpnt->proc_name = "aha1542"; | |
937 | ||
1da177e4 | 938 | if (bases[indx] != 0 && request_region(bases[indx], 4, "aha1542")) { |
643a7c43 | 939 | shpnt = scsi_host_alloc(tpnt, |
1da177e4 LT |
940 | sizeof(struct aha1542_hostdata)); |
941 | ||
942 | if(shpnt==NULL) { | |
943 | release_region(bases[indx], 4); | |
643a7c43 | 944 | return NULL; |
1da177e4 | 945 | } |
e98878f7 | 946 | aha1542 = shost_priv(shpnt); |
1da177e4 LT |
947 | if (!aha1542_test_port(bases[indx], shpnt)) |
948 | goto unregister; | |
949 | ||
1da177e4 LT |
950 | base_io = bases[indx]; |
951 | ||
952 | /* Set the Bus on/off-times as not to ruin floppy performance */ | |
953 | { | |
cb5b570c OZ |
954 | u8 oncmd[] = {CMD_BUSON_TIME, 7}; |
955 | u8 offcmd[] = {CMD_BUSOFF_TIME, 5}; | |
1da177e4 LT |
956 | |
957 | if (setup_called[indx]) { | |
958 | oncmd[1] = setup_buson[indx]; | |
959 | offcmd[1] = setup_busoff[indx]; | |
960 | } | |
961 | aha1542_intr_reset(base_io); | |
962 | aha1542_out(base_io, oncmd, 2); | |
2093bfa1 OZ |
963 | if (!wait_mask(INTRFLAGS(base_io), INTRMASK, HACC, 0, 0)) |
964 | goto fail; | |
1da177e4 LT |
965 | aha1542_intr_reset(base_io); |
966 | aha1542_out(base_io, offcmd, 2); | |
2093bfa1 OZ |
967 | if (!wait_mask(INTRFLAGS(base_io), INTRMASK, HACC, 0, 0)) |
968 | goto fail; | |
1da177e4 | 969 | if (setup_dmaspeed[indx] >= 0) { |
cb5b570c | 970 | u8 dmacmd[] = {CMD_DMASPEED, 0}; |
1da177e4 LT |
971 | dmacmd[1] = setup_dmaspeed[indx]; |
972 | aha1542_intr_reset(base_io); | |
973 | aha1542_out(base_io, dmacmd, 2); | |
2093bfa1 OZ |
974 | if (!wait_mask(INTRFLAGS(base_io), INTRMASK, HACC, 0, 0)) |
975 | goto fail; | |
1da177e4 LT |
976 | } |
977 | while (0) { | |
978 | fail: | |
979 | printk(KERN_ERR "aha1542_detect: setting bus on/off-time failed\n"); | |
980 | } | |
981 | aha1542_intr_reset(base_io); | |
982 | } | |
983 | if (aha1542_query(base_io, &trans)) | |
984 | goto unregister; | |
985 | ||
986 | if (aha1542_getconfig(base_io, &irq_level, &dma_chan, &scsi_id) == -1) | |
987 | goto unregister; | |
988 | ||
989 | printk(KERN_INFO "Configuring Adaptec (SCSI-ID %d) at IO:%x, IRQ %d", scsi_id, base_io, irq_level); | |
990 | if (dma_chan != 0xFF) | |
991 | printk(", DMA priority %d", dma_chan); | |
992 | printk("\n"); | |
993 | ||
1da177e4 LT |
994 | setup_mailboxes(base_io, shpnt); |
995 | ||
1da177e4 LT |
996 | DEB(printk("aha1542_detect: enable interrupt channel %d\n", irq_level)); |
997 | spin_lock_irqsave(&aha1542_lock, flags); | |
87c4d7bc JG |
998 | if (request_irq(irq_level, do_aha1542_intr_handle, 0, |
999 | "aha1542", shpnt)) { | |
1da177e4 LT |
1000 | printk(KERN_ERR "Unable to allocate IRQ for adaptec controller.\n"); |
1001 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
1002 | goto unregister; | |
1003 | } | |
1004 | if (dma_chan != 0xFF) { | |
1005 | if (request_dma(dma_chan, "aha1542")) { | |
1006 | printk(KERN_ERR "Unable to allocate DMA channel for Adaptec.\n"); | |
87c4d7bc | 1007 | free_irq(irq_level, shpnt); |
1da177e4 LT |
1008 | spin_unlock_irqrestore(&aha1542_lock, flags); |
1009 | goto unregister; | |
1010 | } | |
1011 | if (dma_chan == 0 || dma_chan >= 5) { | |
1012 | set_dma_mode(dma_chan, DMA_MODE_CASCADE); | |
1013 | enable_dma(dma_chan); | |
1014 | } | |
1015 | } | |
87c4d7bc | 1016 | |
1da177e4 LT |
1017 | shpnt->this_id = scsi_id; |
1018 | shpnt->unique_id = base_io; | |
1019 | shpnt->io_port = base_io; | |
1020 | shpnt->n_io_port = 4; /* Number of bytes of I/O space used */ | |
1021 | shpnt->dma_channel = dma_chan; | |
1022 | shpnt->irq = irq_level; | |
e98878f7 | 1023 | aha1542->bios_translation = trans; |
1da177e4 LT |
1024 | if (trans == BIOS_TRANSLATION_25563) |
1025 | printk(KERN_INFO "aha1542.c: Using extended bios translation\n"); | |
e98878f7 OZ |
1026 | aha1542->aha1542_last_mbi_used = (2 * AHA1542_MAILBOXES - 1); |
1027 | aha1542->aha1542_last_mbo_used = (AHA1542_MAILBOXES - 1); | |
1028 | memset(aha1542->SCint, 0, sizeof(aha1542->SCint)); | |
1da177e4 | 1029 | spin_unlock_irqrestore(&aha1542_lock, flags); |
1da177e4 | 1030 | |
643a7c43 OZ |
1031 | if (scsi_add_host(shpnt, pdev)) { |
1032 | if (shpnt->dma_channel != 0xff) | |
1033 | free_dma(shpnt->dma_channel); | |
1034 | free_irq(irq_level, shpnt); | |
1035 | goto unregister; | |
1da177e4 LT |
1036 | } |
1037 | ||
643a7c43 | 1038 | scsi_scan_host(shpnt); |
1da177e4 | 1039 | |
643a7c43 | 1040 | return shpnt; |
1da177e4 LT |
1041 | unregister: |
1042 | release_region(bases[indx], 4); | |
643a7c43 OZ |
1043 | scsi_host_put(shpnt); |
1044 | return NULL; | |
1da177e4 LT |
1045 | |
1046 | }; | |
1047 | ||
643a7c43 | 1048 | return NULL; |
1da177e4 LT |
1049 | } |
1050 | ||
1051 | static int aha1542_release(struct Scsi_Host *shost) | |
1052 | { | |
643a7c43 | 1053 | scsi_remove_host(shost); |
1da177e4 | 1054 | if (shost->irq) |
87c4d7bc | 1055 | free_irq(shost->irq, shost); |
1da177e4 LT |
1056 | if (shost->dma_channel != 0xff) |
1057 | free_dma(shost->dma_channel); | |
1058 | if (shost->io_port && shost->n_io_port) | |
1059 | release_region(shost->io_port, shost->n_io_port); | |
643a7c43 | 1060 | scsi_host_put(shost); |
1da177e4 LT |
1061 | return 0; |
1062 | } | |
1063 | ||
1da177e4 | 1064 | |
1da177e4 LT |
1065 | /* |
1066 | * This is a device reset. This is handled by sending a special command | |
1067 | * to the device. | |
1068 | */ | |
1069 | static int aha1542_dev_reset(Scsi_Cmnd * SCpnt) | |
1070 | { | |
e98878f7 | 1071 | struct aha1542_hostdata *aha1542 = shost_priv(SCpnt->device->host); |
1da177e4 | 1072 | unsigned long flags; |
e98878f7 | 1073 | struct mailbox *mb = aha1542->mb; |
cb5b570c OZ |
1074 | u8 target = SCpnt->device->id; |
1075 | u8 lun = SCpnt->device->lun; | |
1da177e4 | 1076 | int mbo; |
e98878f7 | 1077 | struct ccb *ccb = aha1542->ccb; |
1da177e4 | 1078 | |
1da177e4 | 1079 | spin_lock_irqsave(&aha1542_lock, flags); |
e98878f7 | 1080 | mbo = aha1542->aha1542_last_mbo_used + 1; |
1da177e4 LT |
1081 | if (mbo >= AHA1542_MAILBOXES) |
1082 | mbo = 0; | |
1083 | ||
1084 | do { | |
e98878f7 | 1085 | if (mb[mbo].status == 0 && aha1542->SCint[mbo] == NULL) |
1da177e4 LT |
1086 | break; |
1087 | mbo++; | |
1088 | if (mbo >= AHA1542_MAILBOXES) | |
1089 | mbo = 0; | |
e98878f7 | 1090 | } while (mbo != aha1542->aha1542_last_mbo_used); |
1da177e4 | 1091 | |
e98878f7 | 1092 | if (mb[mbo].status || aha1542->SCint[mbo]) |
1da177e4 LT |
1093 | panic("Unable to find empty mailbox for aha1542.\n"); |
1094 | ||
e98878f7 OZ |
1095 | aha1542->SCint[mbo] = SCpnt; /* This will effectively |
1096 | prevent someone else from | |
1097 | screwing with this cdb. */ | |
1da177e4 | 1098 | |
e98878f7 | 1099 | aha1542->aha1542_last_mbo_used = mbo; |
1da177e4 LT |
1100 | spin_unlock_irqrestore(&aha1542_lock, flags); |
1101 | ||
10be6250 | 1102 | any2scsi(mb[mbo].ccbptr, isa_virt_to_bus(&ccb[mbo])); /* This gets trashed for some reason */ |
1da177e4 LT |
1103 | |
1104 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
1105 | ||
1106 | ccb[mbo].op = 0x81; /* BUS DEVICE RESET */ | |
1107 | ||
1108 | ccb[mbo].idlun = (target & 7) << 5 | (lun & 7); /*SCSI Target Id */ | |
1109 | ||
1110 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
1111 | ccb[mbo].commlinkid = 0; | |
1112 | ||
1113 | /* | |
1114 | * Now tell the 1542 to flush all pending commands for this | |
1115 | * target | |
1116 | */ | |
0c2b6481 | 1117 | aha1542_outb(SCpnt->device->host->io_port, CMD_START_SCSI); |
1da177e4 | 1118 | |
017560fc JG |
1119 | scmd_printk(KERN_WARNING, SCpnt, |
1120 | "Trying device reset for target\n"); | |
1da177e4 LT |
1121 | |
1122 | return SUCCESS; | |
1da177e4 LT |
1123 | } |
1124 | ||
1125 | static int aha1542_bus_reset(Scsi_Cmnd * SCpnt) | |
1126 | { | |
e98878f7 | 1127 | struct aha1542_hostdata *aha1542 = shost_priv(SCpnt->device->host); |
1da177e4 LT |
1128 | int i; |
1129 | ||
1130 | /* | |
1131 | * This does a scsi reset for all devices on the bus. | |
1132 | * In principle, we could also reset the 1542 - should | |
1133 | * we do this? Try this first, and we can add that later | |
1134 | * if it turns out to be useful. | |
1135 | */ | |
1136 | outb(SCRST, CONTROL(SCpnt->device->host->io_port)); | |
1137 | ||
1138 | /* | |
1139 | * Wait for the thing to settle down a bit. Unfortunately | |
1140 | * this is going to basically lock up the machine while we | |
1141 | * wait for this to complete. To be 100% correct, we need to | |
1142 | * check for timeout, and if we are doing something like this | |
1143 | * we are pretty desperate anyways. | |
1144 | */ | |
1da177e4 | 1145 | ssleep(4); |
68b3aa7c | 1146 | |
1da177e4 LT |
1147 | spin_lock_irq(SCpnt->device->host->host_lock); |
1148 | ||
2093bfa1 OZ |
1149 | if (!wait_mask(STATUS(SCpnt->device->host->io_port), |
1150 | STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0)) | |
1151 | goto fail; | |
1da177e4 LT |
1152 | |
1153 | /* | |
1154 | * Now try to pick up the pieces. For all pending commands, | |
1155 | * free any internal data structures, and basically clear things | |
1156 | * out. We do not try and restart any commands or anything - | |
1157 | * the strategy handler takes care of that crap. | |
1158 | */ | |
1159 | printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->device->host->host_no); | |
1160 | ||
1161 | for (i = 0; i < AHA1542_MAILBOXES; i++) { | |
e98878f7 | 1162 | if (aha1542->SCint[i] != NULL) { |
1da177e4 | 1163 | Scsi_Cmnd *SCtmp; |
e98878f7 | 1164 | SCtmp = aha1542->SCint[i]; |
1da177e4 LT |
1165 | |
1166 | ||
1167 | if (SCtmp->device->soft_reset) { | |
1168 | /* | |
1169 | * If this device implements the soft reset option, | |
1170 | * then it is still holding onto the command, and | |
1171 | * may yet complete it. In this case, we don't | |
1172 | * flush the data. | |
1173 | */ | |
1174 | continue; | |
1175 | } | |
c9475cb0 JJ |
1176 | kfree(SCtmp->host_scribble); |
1177 | SCtmp->host_scribble = NULL; | |
e98878f7 OZ |
1178 | aha1542->SCint[i] = NULL; |
1179 | aha1542->mb[i].status = 0; | |
1da177e4 LT |
1180 | } |
1181 | } | |
1182 | ||
68b3aa7c | 1183 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1da177e4 LT |
1184 | return SUCCESS; |
1185 | ||
1186 | fail: | |
68b3aa7c | 1187 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1da177e4 LT |
1188 | return FAILED; |
1189 | } | |
1190 | ||
1191 | static int aha1542_host_reset(Scsi_Cmnd * SCpnt) | |
1192 | { | |
e98878f7 | 1193 | struct aha1542_hostdata *aha1542 = shost_priv(SCpnt->device->host); |
1da177e4 LT |
1194 | int i; |
1195 | ||
1196 | /* | |
1197 | * This does a scsi reset for all devices on the bus. | |
1198 | * In principle, we could also reset the 1542 - should | |
1199 | * we do this? Try this first, and we can add that later | |
1200 | * if it turns out to be useful. | |
1201 | */ | |
1202 | outb(HRST | SCRST, CONTROL(SCpnt->device->host->io_port)); | |
1203 | ||
1204 | /* | |
1205 | * Wait for the thing to settle down a bit. Unfortunately | |
1206 | * this is going to basically lock up the machine while we | |
1207 | * wait for this to complete. To be 100% correct, we need to | |
1208 | * check for timeout, and if we are doing something like this | |
1209 | * we are pretty desperate anyways. | |
1210 | */ | |
1da177e4 LT |
1211 | ssleep(4); |
1212 | spin_lock_irq(SCpnt->device->host->host_lock); | |
1213 | ||
2093bfa1 OZ |
1214 | if (!wait_mask(STATUS(SCpnt->device->host->io_port), |
1215 | STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0)) | |
1216 | goto fail; | |
1da177e4 LT |
1217 | |
1218 | /* | |
1219 | * We need to do this too before the 1542 can interact with | |
1220 | * us again. | |
1221 | */ | |
1222 | setup_mailboxes(SCpnt->device->host->io_port, SCpnt->device->host); | |
1223 | ||
1224 | /* | |
1225 | * Now try to pick up the pieces. For all pending commands, | |
1226 | * free any internal data structures, and basically clear things | |
1227 | * out. We do not try and restart any commands or anything - | |
1228 | * the strategy handler takes care of that crap. | |
1229 | */ | |
1230 | printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->device->host->host_no); | |
1231 | ||
1232 | for (i = 0; i < AHA1542_MAILBOXES; i++) { | |
e98878f7 | 1233 | if (aha1542->SCint[i] != NULL) { |
1da177e4 | 1234 | Scsi_Cmnd *SCtmp; |
e98878f7 | 1235 | SCtmp = aha1542->SCint[i]; |
1da177e4 LT |
1236 | |
1237 | if (SCtmp->device->soft_reset) { | |
1238 | /* | |
1239 | * If this device implements the soft reset option, | |
1240 | * then it is still holding onto the command, and | |
1241 | * may yet complete it. In this case, we don't | |
1242 | * flush the data. | |
1243 | */ | |
1244 | continue; | |
1245 | } | |
c9475cb0 JJ |
1246 | kfree(SCtmp->host_scribble); |
1247 | SCtmp->host_scribble = NULL; | |
e98878f7 OZ |
1248 | aha1542->SCint[i] = NULL; |
1249 | aha1542->mb[i].status = 0; | |
1da177e4 LT |
1250 | } |
1251 | } | |
1252 | ||
df0ae249 | 1253 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1da177e4 LT |
1254 | return SUCCESS; |
1255 | ||
1256 | fail: | |
df0ae249 | 1257 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1da177e4 LT |
1258 | return FAILED; |
1259 | } | |
1260 | ||
1da177e4 LT |
1261 | static int aha1542_biosparam(struct scsi_device *sdev, |
1262 | struct block_device *bdev, sector_t capacity, int *ip) | |
1263 | { | |
e98878f7 | 1264 | struct aha1542_hostdata *aha1542 = shost_priv(sdev->host); |
1da177e4 LT |
1265 | int translation_algorithm; |
1266 | int size = capacity; | |
1267 | ||
e98878f7 | 1268 | translation_algorithm = aha1542->bios_translation; |
1da177e4 LT |
1269 | |
1270 | if ((size >> 11) > 1024 && translation_algorithm == BIOS_TRANSLATION_25563) { | |
1271 | /* Please verify that this is the same as what DOS returns */ | |
1272 | ip[0] = 255; | |
1273 | ip[1] = 63; | |
1274 | ip[2] = size / 255 / 63; | |
1275 | } else { | |
1276 | ip[0] = 64; | |
1277 | ip[1] = 32; | |
1278 | ip[2] = size >> 11; | |
1279 | } | |
1280 | ||
1281 | return 0; | |
1282 | } | |
1283 | MODULE_LICENSE("GPL"); | |
1284 | ||
d0be4a7d | 1285 | static struct scsi_host_template driver_template = { |
643a7c43 | 1286 | .module = THIS_MODULE, |
1da177e4 LT |
1287 | .proc_name = "aha1542", |
1288 | .name = "Adaptec 1542", | |
1da177e4 | 1289 | .queuecommand = aha1542_queuecommand, |
1da177e4 LT |
1290 | .eh_device_reset_handler= aha1542_dev_reset, |
1291 | .eh_bus_reset_handler = aha1542_bus_reset, | |
1292 | .eh_host_reset_handler = aha1542_host_reset, | |
1293 | .bios_param = aha1542_biosparam, | |
1294 | .can_queue = AHA1542_MAILBOXES, | |
1295 | .this_id = 7, | |
10be6250 OZ |
1296 | .sg_tablesize = 16, |
1297 | .cmd_per_lun = 1, | |
1da177e4 LT |
1298 | .unchecked_isa_dma = 1, |
1299 | .use_clustering = ENABLE_CLUSTERING, | |
1300 | }; | |
643a7c43 OZ |
1301 | |
1302 | static int aha1542_isa_match(struct device *pdev, unsigned int ndev) | |
1303 | { | |
1304 | struct Scsi_Host *sh = aha1542_hw_init(&driver_template, pdev, ndev); | |
1305 | ||
1306 | if (!sh) | |
1307 | return 0; | |
1308 | ||
1309 | dev_set_drvdata(pdev, sh); | |
1310 | return 1; | |
1311 | } | |
1312 | ||
1313 | static int aha1542_isa_remove(struct device *pdev, | |
1314 | unsigned int ndev) | |
1315 | { | |
1316 | aha1542_release(dev_get_drvdata(pdev)); | |
1317 | dev_set_drvdata(pdev, NULL); | |
1318 | return 0; | |
1319 | } | |
1320 | ||
1321 | static struct isa_driver aha1542_isa_driver = { | |
1322 | .match = aha1542_isa_match, | |
1323 | .remove = aha1542_isa_remove, | |
1324 | .driver = { | |
1325 | .name = "aha1542" | |
1326 | }, | |
1327 | }; | |
1328 | static int isa_registered; | |
1329 | ||
1330 | #ifdef CONFIG_PNP | |
1331 | static struct pnp_device_id aha1542_pnp_ids[] = { | |
1332 | { .id = "ADP1542" }, | |
1333 | { .id = "" } | |
1334 | }; | |
1335 | MODULE_DEVICE_TABLE(pnp, aha1542_pnp_ids); | |
1336 | ||
1337 | static int aha1542_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *id) | |
1338 | { | |
1339 | int indx; | |
1340 | struct Scsi_Host *sh; | |
1341 | ||
1342 | for (indx = 0; indx < ARRAY_SIZE(bases); indx++) { | |
1343 | if (bases[indx]) | |
1344 | continue; | |
1345 | ||
1346 | if (pnp_activate_dev(pdev) < 0) | |
1347 | continue; | |
1348 | ||
1349 | bases[indx] = pnp_port_start(pdev, 0); | |
1350 | ||
1351 | /* The card can be queried for its DMA, we have | |
1352 | the DMA set up that is enough */ | |
1353 | ||
1354 | printk(KERN_INFO "ISAPnP found an AHA1535 at I/O 0x%03X\n", bases[indx]); | |
1355 | } | |
1356 | ||
1357 | sh = aha1542_hw_init(&driver_template, &pdev->dev, indx); | |
1358 | if (!sh) | |
1359 | return -ENODEV; | |
1360 | ||
1361 | pnp_set_drvdata(pdev, sh); | |
1362 | return 0; | |
1363 | } | |
1364 | ||
1365 | static void aha1542_pnp_remove(struct pnp_dev *pdev) | |
1366 | { | |
1367 | aha1542_release(pnp_get_drvdata(pdev)); | |
1368 | pnp_set_drvdata(pdev, NULL); | |
1369 | } | |
1370 | ||
1371 | static struct pnp_driver aha1542_pnp_driver = { | |
1372 | .name = "aha1542", | |
1373 | .id_table = aha1542_pnp_ids, | |
1374 | .probe = aha1542_pnp_probe, | |
1375 | .remove = aha1542_pnp_remove, | |
1376 | }; | |
1377 | static int pnp_registered; | |
1378 | #endif /* CONFIG_PNP */ | |
1379 | ||
1380 | static int __init aha1542_init(void) | |
1381 | { | |
1382 | int ret = 0; | |
1383 | #ifdef MODULE | |
1384 | int atbt = -1; | |
1385 | ||
1386 | bases[0] = aha1542[0]; | |
1387 | setup_buson[0] = aha1542[1]; | |
1388 | setup_busoff[0] = aha1542[2]; | |
1389 | ||
1390 | switch (aha1542[3]) { | |
1391 | case 5: | |
1392 | atbt = 0x00; | |
1393 | break; | |
1394 | case 6: | |
1395 | atbt = 0x04; | |
1396 | break; | |
1397 | case 7: | |
1398 | atbt = 0x01; | |
1399 | break; | |
1400 | case 8: | |
1401 | atbt = 0x02; | |
1402 | break; | |
1403 | case 10: | |
1404 | atbt = 0x03; | |
1405 | break; | |
1406 | }; | |
1407 | setup_dmaspeed[0] = atbt; | |
1408 | #endif | |
1409 | ||
1410 | #ifdef CONFIG_PNP | |
1411 | if (isapnp) { | |
1412 | ret = pnp_register_driver(&aha1542_pnp_driver); | |
1413 | if (!ret) | |
1414 | pnp_registered = 1; | |
1415 | } | |
1416 | #endif | |
1417 | ret = isa_register_driver(&aha1542_isa_driver, MAXBOARDS); | |
1418 | if (!ret) | |
1419 | isa_registered = 1; | |
1420 | ||
1421 | #ifdef CONFIG_PNP | |
1422 | if (pnp_registered) | |
1423 | ret = 0; | |
1424 | #endif | |
1425 | if (isa_registered) | |
1426 | ret = 0; | |
1427 | ||
1428 | return ret; | |
1429 | } | |
1430 | ||
1431 | static void __exit aha1542_exit(void) | |
1432 | { | |
1433 | #ifdef CONFIG_PNP | |
1434 | if (pnp_registered) | |
1435 | pnp_unregister_driver(&aha1542_pnp_driver); | |
1436 | #endif | |
1437 | if (isa_registered) | |
1438 | isa_unregister_driver(&aha1542_isa_driver); | |
1439 | } | |
1440 | ||
1441 | module_init(aha1542_init); | |
1442 | module_exit(aha1542_exit); |