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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 |
1da177e4 LT |
25 | * Added proper detection of the AHA-1640 (MCA version of AHA-1540) |
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> | |
1da177e4 LT |
38 | #include <linux/isapnp.h> |
39 | #include <linux/blkdev.h> | |
40 | #include <linux/mca.h> | |
41 | #include <linux/mca-legacy.h> | |
42 | ||
43 | #include <asm/dma.h> | |
44 | #include <asm/system.h> | |
45 | #include <asm/io.h> | |
46 | ||
47 | #include "scsi.h" | |
48 | #include <scsi/scsi_host.h> | |
49 | #include "aha1542.h" | |
50 | ||
51 | #define SCSI_BUF_PA(address) isa_virt_to_bus(address) | |
45711f1a | 52 | #define SCSI_SG_PA(sgent) (isa_page_to_bus(sg_page((sgent))) + (sgent)->offset) |
1da177e4 | 53 | |
1da177e4 | 54 | static void BAD_SG_DMA(Scsi_Cmnd * SCpnt, |
51cf2249 | 55 | struct scatterlist *sgp, |
1da177e4 LT |
56 | int nseg, |
57 | int badseg) | |
58 | { | |
59 | printk(KERN_CRIT "sgpnt[%d:%d] page %p/0x%llx length %u\n", | |
45711f1a | 60 | badseg, nseg, sg_virt(sgp), |
51cf2249 JA |
61 | (unsigned long long)SCSI_SG_PA(sgp), |
62 | sgp->length); | |
1da177e4 LT |
63 | |
64 | /* | |
65 | * Not safe to continue. | |
66 | */ | |
67 | panic("Buffer at physical address > 16Mb used for aha1542"); | |
68 | } | |
69 | ||
70 | #include<linux/stat.h> | |
71 | ||
72 | #ifdef DEBUG | |
73 | #define DEB(x) x | |
74 | #else | |
75 | #define DEB(x) | |
76 | #endif | |
77 | ||
78 | /* | |
79 | 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 $"; | |
80 | */ | |
81 | ||
82 | /* The adaptec can be configured for quite a number of addresses, but | |
83 | I generally do not want the card poking around at random. We allow | |
84 | two addresses - this allows people to use the Adaptec with a Midi | |
85 | card, which also used 0x330 -- can be overridden with LILO! */ | |
86 | ||
87 | #define MAXBOARDS 4 /* Increase this and the sizes of the | |
88 | arrays below, if you need more.. */ | |
89 | ||
90 | /* Boards 3,4 slots are reserved for ISAPnP/MCA scans */ | |
91 | ||
92 | static unsigned int bases[MAXBOARDS] __initdata = {0x330, 0x334, 0, 0}; | |
93 | ||
94 | /* set by aha1542_setup according to the command line; they also may | |
95 | be marked __initdata, but require zero initializers then */ | |
96 | ||
97 | static int setup_called[MAXBOARDS]; | |
98 | static int setup_buson[MAXBOARDS]; | |
99 | static int setup_busoff[MAXBOARDS]; | |
100 | static int setup_dmaspeed[MAXBOARDS] __initdata = { -1, -1, -1, -1 }; | |
101 | ||
102 | /* | |
103 | * LILO/Module params: aha1542=<PORTBASE>[,<BUSON>,<BUSOFF>[,<DMASPEED>]] | |
104 | * | |
105 | * Where: <PORTBASE> is any of the valid AHA addresses: | |
106 | * 0x130, 0x134, 0x230, 0x234, 0x330, 0x334 | |
107 | * <BUSON> is the time (in microsecs) that AHA spends on the AT-bus | |
108 | * when transferring data. 1542A power-on default is 11us, | |
109 | * valid values are in range: 2..15 (decimal) | |
110 | * <BUSOFF> is the time that AHA spends OFF THE BUS after while | |
111 | * it is transferring data (not to monopolize the bus). | |
112 | * Power-on default is 4us, valid range: 1..64 microseconds. | |
113 | * <DMASPEED> Default is jumper selected (1542A: on the J1), | |
114 | * but experimenter can alter it with this. | |
115 | * Valid values: 5, 6, 7, 8, 10 (MB/s) | |
116 | * Factory default is 5 MB/s. | |
117 | */ | |
118 | ||
119 | #if defined(MODULE) | |
120 | static int isapnp = 0; | |
121 | static int aha1542[] = {0x330, 11, 4, -1}; | |
122 | module_param_array(aha1542, int, NULL, 0); | |
123 | module_param(isapnp, bool, 0); | |
124 | ||
125 | static struct isapnp_device_id id_table[] __initdata = { | |
126 | { | |
127 | ISAPNP_ANY_ID, ISAPNP_ANY_ID, | |
128 | ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1542), | |
129 | 0 | |
130 | }, | |
131 | {0} | |
132 | }; | |
133 | ||
134 | MODULE_DEVICE_TABLE(isapnp, id_table); | |
135 | ||
136 | #else | |
137 | static int isapnp = 1; | |
138 | #endif | |
139 | ||
140 | #define BIOS_TRANSLATION_1632 0 /* Used by some old 1542A boards */ | |
141 | #define BIOS_TRANSLATION_6432 1 /* Default case these days */ | |
142 | #define BIOS_TRANSLATION_25563 2 /* Big disk case */ | |
143 | ||
144 | struct aha1542_hostdata { | |
145 | /* This will effectively start both of them at the first mailbox */ | |
146 | int bios_translation; /* Mapping bios uses - for compatibility */ | |
147 | int aha1542_last_mbi_used; | |
148 | int aha1542_last_mbo_used; | |
149 | Scsi_Cmnd *SCint[AHA1542_MAILBOXES]; | |
150 | struct mailbox mb[2 * AHA1542_MAILBOXES]; | |
151 | struct ccb ccb[AHA1542_MAILBOXES]; | |
152 | }; | |
153 | ||
154 | #define HOSTDATA(host) ((struct aha1542_hostdata *) &host->hostdata) | |
155 | ||
156 | static struct Scsi_Host *aha_host[7]; /* One for each IRQ level (9-15) */ | |
157 | ||
158 | static DEFINE_SPINLOCK(aha1542_lock); | |
159 | ||
160 | ||
161 | ||
162 | #define WAITnexttimeout 3000000 | |
163 | ||
164 | static void setup_mailboxes(int base_io, struct Scsi_Host *shpnt); | |
165 | static int aha1542_restart(struct Scsi_Host *shost); | |
7d12e780 DH |
166 | static void aha1542_intr_handle(struct Scsi_Host *shost, void *dev_id); |
167 | static irqreturn_t do_aha1542_intr_handle(int irq, void *dev_id); | |
1da177e4 LT |
168 | |
169 | #define aha1542_intr_reset(base) outb(IRST, CONTROL(base)) | |
170 | ||
171 | #define WAIT(port, mask, allof, noneof) \ | |
172 | { register int WAITbits; \ | |
173 | register int WAITtimeout = WAITnexttimeout; \ | |
174 | while (1) { \ | |
175 | WAITbits = inb(port) & (mask); \ | |
176 | if ((WAITbits & (allof)) == (allof) && ((WAITbits & (noneof)) == 0)) \ | |
177 | break; \ | |
178 | if (--WAITtimeout == 0) goto fail; \ | |
179 | } \ | |
180 | } | |
181 | ||
182 | /* Similar to WAIT, except we use the udelay call to regulate the | |
183 | amount of time we wait. */ | |
184 | #define WAITd(port, mask, allof, noneof, timeout) \ | |
185 | { register int WAITbits; \ | |
186 | register int WAITtimeout = timeout; \ | |
187 | while (1) { \ | |
188 | WAITbits = inb(port) & (mask); \ | |
189 | if ((WAITbits & (allof)) == (allof) && ((WAITbits & (noneof)) == 0)) \ | |
190 | break; \ | |
191 | mdelay(1); \ | |
192 | if (--WAITtimeout == 0) goto fail; \ | |
193 | } \ | |
194 | } | |
195 | ||
196 | static void aha1542_stat(void) | |
197 | { | |
198 | /* int s = inb(STATUS), i = inb(INTRFLAGS); | |
199 | printk("status=%x intrflags=%x\n", s, i, WAITnexttimeout-WAITtimeout); */ | |
200 | } | |
201 | ||
202 | /* This is a bit complicated, but we need to make sure that an interrupt | |
203 | routine does not send something out while we are in the middle of this. | |
204 | Fortunately, it is only at boot time that multi-byte messages | |
205 | are ever sent. */ | |
206 | static int aha1542_out(unsigned int base, unchar * cmdp, int len) | |
207 | { | |
208 | unsigned long flags = 0; | |
209 | int got_lock; | |
210 | ||
211 | if (len == 1) { | |
212 | got_lock = 0; | |
213 | while (1 == 1) { | |
214 | WAIT(STATUS(base), CDF, 0, CDF); | |
215 | spin_lock_irqsave(&aha1542_lock, flags); | |
216 | if (inb(STATUS(base)) & CDF) { | |
217 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
218 | continue; | |
219 | } | |
220 | outb(*cmdp, DATA(base)); | |
221 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
222 | return 0; | |
223 | } | |
224 | } else { | |
225 | spin_lock_irqsave(&aha1542_lock, flags); | |
226 | got_lock = 1; | |
227 | while (len--) { | |
228 | WAIT(STATUS(base), CDF, 0, CDF); | |
229 | outb(*cmdp++, DATA(base)); | |
230 | } | |
231 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
232 | } | |
233 | return 0; | |
234 | fail: | |
235 | if (got_lock) | |
236 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
237 | printk(KERN_ERR "aha1542_out failed(%d): ", len + 1); | |
238 | aha1542_stat(); | |
239 | return 1; | |
240 | } | |
241 | ||
242 | /* Only used at boot time, so we do not need to worry about latency as much | |
243 | here */ | |
244 | ||
245 | static int __init aha1542_in(unsigned int base, unchar * cmdp, int len) | |
246 | { | |
247 | unsigned long flags; | |
248 | ||
249 | spin_lock_irqsave(&aha1542_lock, flags); | |
250 | while (len--) { | |
251 | WAIT(STATUS(base), DF, DF, 0); | |
252 | *cmdp++ = inb(DATA(base)); | |
253 | } | |
254 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
255 | return 0; | |
256 | fail: | |
257 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
258 | printk(KERN_ERR "aha1542_in failed(%d): ", len + 1); | |
259 | aha1542_stat(); | |
260 | return 1; | |
261 | } | |
262 | ||
263 | /* Similar to aha1542_in, except that we wait a very short period of time. | |
264 | We use this if we know the board is alive and awake, but we are not sure | |
265 | if the board will respond to the command we are about to send or not */ | |
266 | static int __init aha1542_in1(unsigned int base, unchar * cmdp, int len) | |
267 | { | |
268 | unsigned long flags; | |
269 | ||
270 | spin_lock_irqsave(&aha1542_lock, flags); | |
271 | while (len--) { | |
272 | WAITd(STATUS(base), DF, DF, 0, 100); | |
273 | *cmdp++ = inb(DATA(base)); | |
274 | } | |
275 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
276 | return 0; | |
277 | fail: | |
278 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
279 | return 1; | |
280 | } | |
281 | ||
282 | static int makecode(unsigned hosterr, unsigned scsierr) | |
283 | { | |
284 | switch (hosterr) { | |
285 | case 0x0: | |
286 | case 0xa: /* Linked command complete without error and linked normally */ | |
287 | case 0xb: /* Linked command complete without error, interrupt generated */ | |
288 | hosterr = 0; | |
289 | break; | |
290 | ||
291 | case 0x11: /* Selection time out-The initiator selection or target | |
292 | reselection was not complete within the SCSI Time out period */ | |
293 | hosterr = DID_TIME_OUT; | |
294 | break; | |
295 | ||
296 | case 0x12: /* Data overrun/underrun-The target attempted to transfer more data | |
297 | than was allocated by the Data Length field or the sum of the | |
298 | Scatter / Gather Data Length fields. */ | |
299 | ||
300 | case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */ | |
301 | ||
302 | case 0x15: /* MBO command was not 00, 01 or 02-The first byte of the CB was | |
303 | invalid. This usually indicates a software failure. */ | |
304 | ||
305 | case 0x16: /* Invalid CCB Operation Code-The first byte of the CCB was invalid. | |
306 | This usually indicates a software failure. */ | |
307 | ||
308 | case 0x17: /* Linked CCB does not have the same LUN-A subsequent CCB of a set | |
309 | of linked CCB's does not specify the same logical unit number as | |
310 | the first. */ | |
311 | case 0x18: /* Invalid Target Direction received from Host-The direction of a | |
312 | Target Mode CCB was invalid. */ | |
313 | ||
314 | case 0x19: /* Duplicate CCB Received in Target Mode-More than once CCB was | |
315 | received to service data transfer between the same target LUN | |
316 | and initiator SCSI ID in the same direction. */ | |
317 | ||
318 | case 0x1a: /* Invalid CCB or Segment List Parameter-A segment list with a zero | |
319 | length segment or invalid segment list boundaries was received. | |
320 | A CCB parameter was invalid. */ | |
321 | DEB(printk("Aha1542: %x %x\n", hosterr, scsierr)); | |
322 | hosterr = DID_ERROR; /* Couldn't find any better */ | |
323 | break; | |
324 | ||
325 | case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus | |
326 | phase sequence was requested by the target. The host adapter | |
327 | will generate a SCSI Reset Condition, notifying the host with | |
328 | a SCRD interrupt */ | |
329 | hosterr = DID_RESET; | |
330 | break; | |
331 | default: | |
332 | printk(KERN_ERR "aha1542: makecode: unknown hoststatus %x\n", hosterr); | |
333 | break; | |
334 | } | |
335 | return scsierr | (hosterr << 16); | |
336 | } | |
337 | ||
338 | static int __init aha1542_test_port(int bse, struct Scsi_Host *shpnt) | |
339 | { | |
340 | unchar inquiry_cmd[] = {CMD_INQUIRY}; | |
341 | unchar inquiry_result[4]; | |
342 | unchar *cmdp; | |
343 | int len; | |
344 | volatile int debug = 0; | |
345 | ||
346 | /* Quick and dirty test for presence of the card. */ | |
347 | if (inb(STATUS(bse)) == 0xff) | |
348 | return 0; | |
349 | ||
350 | /* Reset the adapter. I ought to make a hard reset, but it's not really necessary */ | |
351 | ||
352 | /* DEB(printk("aha1542_test_port called \n")); */ | |
353 | ||
354 | /* In case some other card was probing here, reset interrupts */ | |
355 | aha1542_intr_reset(bse); /* reset interrupts, so they don't block */ | |
356 | ||
357 | outb(SRST | IRST /*|SCRST */ , CONTROL(bse)); | |
358 | ||
359 | mdelay(20); /* Wait a little bit for things to settle down. */ | |
360 | ||
361 | debug = 1; | |
362 | /* Expect INIT and IDLE, any of the others are bad */ | |
363 | WAIT(STATUS(bse), STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); | |
364 | ||
365 | debug = 2; | |
366 | /* Shouldn't have generated any interrupts during reset */ | |
367 | if (inb(INTRFLAGS(bse)) & INTRMASK) | |
368 | goto fail; | |
369 | ||
370 | ||
371 | /* Perform a host adapter inquiry instead so we do not need to set | |
372 | up the mailboxes ahead of time */ | |
373 | ||
374 | aha1542_out(bse, inquiry_cmd, 1); | |
375 | ||
376 | debug = 3; | |
377 | len = 4; | |
378 | cmdp = &inquiry_result[0]; | |
379 | ||
380 | while (len--) { | |
381 | WAIT(STATUS(bse), DF, DF, 0); | |
382 | *cmdp++ = inb(DATA(bse)); | |
383 | } | |
384 | ||
385 | debug = 8; | |
386 | /* Reading port should reset DF */ | |
387 | if (inb(STATUS(bse)) & DF) | |
388 | goto fail; | |
389 | ||
390 | debug = 9; | |
391 | /* When HACC, command is completed, and we're though testing */ | |
392 | WAIT(INTRFLAGS(bse), HACC, HACC, 0); | |
393 | /* now initialize adapter */ | |
394 | ||
395 | debug = 10; | |
396 | /* Clear interrupts */ | |
397 | outb(IRST, CONTROL(bse)); | |
398 | ||
399 | debug = 11; | |
400 | ||
401 | return debug; /* 1 = ok */ | |
402 | fail: | |
403 | return 0; /* 0 = not ok */ | |
404 | } | |
405 | ||
406 | /* A quick wrapper for do_aha1542_intr_handle to grab the spin lock */ | |
7d12e780 | 407 | static irqreturn_t do_aha1542_intr_handle(int irq, void *dev_id) |
1da177e4 LT |
408 | { |
409 | unsigned long flags; | |
410 | struct Scsi_Host *shost; | |
411 | ||
412 | shost = aha_host[irq - 9]; | |
413 | if (!shost) | |
414 | panic("Splunge!"); | |
415 | ||
416 | spin_lock_irqsave(shost->host_lock, flags); | |
7d12e780 | 417 | aha1542_intr_handle(shost, dev_id); |
1da177e4 LT |
418 | spin_unlock_irqrestore(shost->host_lock, flags); |
419 | return IRQ_HANDLED; | |
420 | } | |
421 | ||
422 | /* A "high" level interrupt handler */ | |
7d12e780 | 423 | static void aha1542_intr_handle(struct Scsi_Host *shost, void *dev_id) |
1da177e4 LT |
424 | { |
425 | void (*my_done) (Scsi_Cmnd *) = NULL; | |
426 | int errstatus, mbi, mbo, mbistatus; | |
427 | int number_serviced; | |
428 | unsigned long flags; | |
429 | Scsi_Cmnd *SCtmp; | |
430 | int flag; | |
431 | int needs_restart; | |
432 | struct mailbox *mb; | |
433 | struct ccb *ccb; | |
434 | ||
435 | mb = HOSTDATA(shost)->mb; | |
436 | ccb = HOSTDATA(shost)->ccb; | |
437 | ||
438 | #ifdef DEBUG | |
439 | { | |
440 | flag = inb(INTRFLAGS(shost->io_port)); | |
441 | printk(KERN_DEBUG "aha1542_intr_handle: "); | |
442 | if (!(flag & ANYINTR)) | |
443 | printk("no interrupt?"); | |
444 | if (flag & MBIF) | |
445 | printk("MBIF "); | |
446 | if (flag & MBOA) | |
447 | printk("MBOF "); | |
448 | if (flag & HACC) | |
449 | printk("HACC "); | |
450 | if (flag & SCRD) | |
451 | printk("SCRD "); | |
452 | printk("status %02x\n", inb(STATUS(shost->io_port))); | |
453 | }; | |
454 | #endif | |
455 | number_serviced = 0; | |
456 | needs_restart = 0; | |
457 | ||
458 | while (1 == 1) { | |
459 | flag = inb(INTRFLAGS(shost->io_port)); | |
460 | ||
461 | /* Check for unusual interrupts. If any of these happen, we should | |
462 | probably do something special, but for now just printing a message | |
463 | is sufficient. A SCSI reset detected is something that we really | |
464 | need to deal with in some way. */ | |
465 | if (flag & ~MBIF) { | |
466 | if (flag & MBOA) | |
467 | printk("MBOF "); | |
468 | if (flag & HACC) | |
469 | printk("HACC "); | |
470 | if (flag & SCRD) { | |
471 | needs_restart = 1; | |
472 | printk("SCRD "); | |
473 | } | |
474 | } | |
475 | aha1542_intr_reset(shost->io_port); | |
476 | ||
477 | spin_lock_irqsave(&aha1542_lock, flags); | |
478 | mbi = HOSTDATA(shost)->aha1542_last_mbi_used + 1; | |
479 | if (mbi >= 2 * AHA1542_MAILBOXES) | |
480 | mbi = AHA1542_MAILBOXES; | |
481 | ||
482 | do { | |
483 | if (mb[mbi].status != 0) | |
484 | break; | |
485 | mbi++; | |
486 | if (mbi >= 2 * AHA1542_MAILBOXES) | |
487 | mbi = AHA1542_MAILBOXES; | |
488 | } while (mbi != HOSTDATA(shost)->aha1542_last_mbi_used); | |
489 | ||
490 | if (mb[mbi].status == 0) { | |
491 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
492 | /* Hmm, no mail. Must have read it the last time around */ | |
493 | if (!number_serviced && !needs_restart) | |
494 | printk(KERN_WARNING "aha1542.c: interrupt received, but no mail.\n"); | |
495 | /* We detected a reset. Restart all pending commands for | |
496 | devices that use the hard reset option */ | |
497 | if (needs_restart) | |
498 | aha1542_restart(shost); | |
499 | return; | |
500 | }; | |
501 | ||
502 | mbo = (scsi2int(mb[mbi].ccbptr) - (SCSI_BUF_PA(&ccb[0]))) / sizeof(struct ccb); | |
503 | mbistatus = mb[mbi].status; | |
504 | mb[mbi].status = 0; | |
505 | HOSTDATA(shost)->aha1542_last_mbi_used = mbi; | |
506 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
507 | ||
508 | #ifdef DEBUG | |
509 | { | |
510 | if (ccb[mbo].tarstat | ccb[mbo].hastat) | |
511 | printk(KERN_DEBUG "aha1542_command: returning %x (status %d)\n", | |
512 | ccb[mbo].tarstat + ((int) ccb[mbo].hastat << 16), mb[mbi].status); | |
513 | }; | |
514 | #endif | |
515 | ||
516 | if (mbistatus == 3) | |
517 | continue; /* Aborted command not found */ | |
518 | ||
519 | #ifdef DEBUG | |
520 | printk(KERN_DEBUG "...done %d %d\n", mbo, mbi); | |
521 | #endif | |
522 | ||
523 | SCtmp = HOSTDATA(shost)->SCint[mbo]; | |
524 | ||
525 | if (!SCtmp || !SCtmp->scsi_done) { | |
526 | printk(KERN_WARNING "aha1542_intr_handle: Unexpected interrupt\n"); | |
527 | printk(KERN_WARNING "tarstat=%x, hastat=%x idlun=%x ccb#=%d \n", ccb[mbo].tarstat, | |
528 | ccb[mbo].hastat, ccb[mbo].idlun, mbo); | |
529 | return; | |
530 | } | |
531 | my_done = SCtmp->scsi_done; | |
c9475cb0 JJ |
532 | kfree(SCtmp->host_scribble); |
533 | SCtmp->host_scribble = NULL; | |
1da177e4 LT |
534 | /* Fetch the sense data, and tuck it away, in the required slot. The |
535 | Adaptec automatically fetches it, and there is no guarantee that | |
536 | we will still have it in the cdb when we come back */ | |
537 | if (ccb[mbo].tarstat == 2) | |
538 | memcpy(SCtmp->sense_buffer, &ccb[mbo].cdb[ccb[mbo].cdblen], | |
b80ca4f7 | 539 | SCSI_SENSE_BUFFERSIZE); |
1da177e4 LT |
540 | |
541 | ||
542 | /* is there mail :-) */ | |
543 | ||
544 | /* more error checking left out here */ | |
545 | if (mbistatus != 1) | |
546 | /* This is surely wrong, but I don't know what's right */ | |
547 | errstatus = makecode(ccb[mbo].hastat, ccb[mbo].tarstat); | |
548 | else | |
549 | errstatus = 0; | |
550 | ||
551 | #ifdef DEBUG | |
552 | if (errstatus) | |
553 | printk(KERN_DEBUG "(aha1542 error:%x %x %x) ", errstatus, | |
554 | ccb[mbo].hastat, ccb[mbo].tarstat); | |
555 | #endif | |
556 | ||
557 | if (ccb[mbo].tarstat == 2) { | |
558 | #ifdef DEBUG | |
559 | int i; | |
560 | #endif | |
561 | DEB(printk("aha1542_intr_handle: sense:")); | |
562 | #ifdef DEBUG | |
563 | for (i = 0; i < 12; i++) | |
564 | printk("%02x ", ccb[mbo].cdb[ccb[mbo].cdblen + i]); | |
565 | printk("\n"); | |
566 | #endif | |
567 | /* | |
568 | DEB(printk("aha1542_intr_handle: buf:")); | |
569 | for (i = 0; i < bufflen; i++) | |
570 | printk("%02x ", ((unchar *)buff)[i]); | |
571 | printk("\n"); | |
572 | */ | |
573 | } | |
574 | DEB(if (errstatus) printk("aha1542_intr_handle: returning %6x\n", errstatus)); | |
575 | SCtmp->result = errstatus; | |
576 | HOSTDATA(shost)->SCint[mbo] = NULL; /* This effectively frees up the mailbox slot, as | |
577 | far as queuecommand is concerned */ | |
578 | my_done(SCtmp); | |
579 | number_serviced++; | |
580 | }; | |
581 | } | |
582 | ||
583 | static int aha1542_queuecommand(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *)) | |
584 | { | |
585 | unchar ahacmd = CMD_START_SCSI; | |
586 | unchar direction; | |
587 | unchar *cmd = (unchar *) SCpnt->cmnd; | |
588 | unchar target = SCpnt->device->id; | |
589 | unchar lun = SCpnt->device->lun; | |
590 | unsigned long flags; | |
fc3fdfcc | 591 | int bufflen = scsi_bufflen(SCpnt); |
1da177e4 LT |
592 | int mbo; |
593 | struct mailbox *mb; | |
594 | struct ccb *ccb; | |
595 | ||
596 | DEB(int i); | |
597 | ||
598 | mb = HOSTDATA(SCpnt->device->host)->mb; | |
599 | ccb = HOSTDATA(SCpnt->device->host)->ccb; | |
600 | ||
601 | DEB(if (target > 1) { | |
602 | SCpnt->result = DID_TIME_OUT << 16; | |
603 | done(SCpnt); return 0; | |
604 | } | |
605 | ); | |
606 | ||
607 | if (*cmd == REQUEST_SENSE) { | |
608 | /* Don't do the command - we have the sense data already */ | |
609 | #if 0 | |
610 | /* scsi_request_sense() provides a buffer of size 256, | |
611 | so there is no reason to expect equality */ | |
b80ca4f7 | 612 | if (bufflen != SCSI_SENSE_BUFFERSIZE) |
1da177e4 LT |
613 | printk(KERN_CRIT "aha1542: Wrong buffer length supplied " |
614 | "for request sense (%d)\n", bufflen); | |
615 | #endif | |
616 | SCpnt->result = 0; | |
617 | done(SCpnt); | |
618 | return 0; | |
619 | } | |
620 | #ifdef DEBUG | |
621 | if (*cmd == READ_10 || *cmd == WRITE_10) | |
622 | i = xscsi2int(cmd + 2); | |
623 | else if (*cmd == READ_6 || *cmd == WRITE_6) | |
624 | i = scsi2int(cmd + 2); | |
625 | else | |
626 | i = -1; | |
627 | if (done) | |
628 | printk(KERN_DEBUG "aha1542_queuecommand: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen); | |
629 | else | |
630 | printk(KERN_DEBUG "aha1542_command: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen); | |
631 | aha1542_stat(); | |
632 | printk(KERN_DEBUG "aha1542_queuecommand: dumping scsi cmd:"); | |
633 | for (i = 0; i < SCpnt->cmd_len; i++) | |
634 | printk("%02x ", cmd[i]); | |
635 | printk("\n"); | |
636 | if (*cmd == WRITE_10 || *cmd == WRITE_6) | |
637 | return 0; /* we are still testing, so *don't* write */ | |
638 | #endif | |
639 | /* Use the outgoing mailboxes in a round-robin fashion, because this | |
640 | is how the host adapter will scan for them */ | |
641 | ||
642 | spin_lock_irqsave(&aha1542_lock, flags); | |
643 | mbo = HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used + 1; | |
644 | if (mbo >= AHA1542_MAILBOXES) | |
645 | mbo = 0; | |
646 | ||
647 | do { | |
648 | if (mb[mbo].status == 0 && HOSTDATA(SCpnt->device->host)->SCint[mbo] == NULL) | |
649 | break; | |
650 | mbo++; | |
651 | if (mbo >= AHA1542_MAILBOXES) | |
652 | mbo = 0; | |
653 | } while (mbo != HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used); | |
654 | ||
655 | if (mb[mbo].status || HOSTDATA(SCpnt->device->host)->SCint[mbo]) | |
656 | panic("Unable to find empty mailbox for aha1542.\n"); | |
657 | ||
658 | HOSTDATA(SCpnt->device->host)->SCint[mbo] = SCpnt; /* This will effectively prevent someone else from | |
659 | screwing with this cdb. */ | |
660 | ||
661 | HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used = mbo; | |
662 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
663 | ||
664 | #ifdef DEBUG | |
665 | printk(KERN_DEBUG "Sending command (%d %x)...", mbo, done); | |
666 | #endif | |
667 | ||
668 | any2scsi(mb[mbo].ccbptr, SCSI_BUF_PA(&ccb[mbo])); /* This gets trashed for some reason */ | |
669 | ||
670 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
671 | ||
672 | ccb[mbo].cdblen = SCpnt->cmd_len; | |
673 | ||
674 | direction = 0; | |
675 | if (*cmd == READ_10 || *cmd == READ_6) | |
676 | direction = 8; | |
677 | else if (*cmd == WRITE_10 || *cmd == WRITE_6) | |
678 | direction = 16; | |
679 | ||
680 | memcpy(ccb[mbo].cdb, cmd, ccb[mbo].cdblen); | |
681 | ||
fc3fdfcc | 682 | if (bufflen) { |
51cf2249 | 683 | struct scatterlist *sg; |
1da177e4 LT |
684 | struct chain *cptr; |
685 | #ifdef DEBUG | |
686 | unsigned char *ptr; | |
687 | #endif | |
fc3fdfcc | 688 | int i, sg_count = scsi_sg_count(SCpnt); |
1da177e4 | 689 | ccb[mbo].op = 2; /* SCSI Initiator Command w/scatter-gather */ |
fc3fdfcc BH |
690 | SCpnt->host_scribble = kmalloc(sizeof(*cptr)*sg_count, |
691 | GFP_KERNEL | GFP_DMA); | |
1da177e4 LT |
692 | cptr = (struct chain *) SCpnt->host_scribble; |
693 | if (cptr == NULL) { | |
694 | /* free the claimed mailbox slot */ | |
695 | HOSTDATA(SCpnt->device->host)->SCint[mbo] = NULL; | |
696 | return SCSI_MLQUEUE_HOST_BUSY; | |
697 | } | |
fc3fdfcc | 698 | scsi_for_each_sg(SCpnt, sg, sg_count, i) { |
51cf2249 JA |
699 | any2scsi(cptr[i].dataptr, SCSI_SG_PA(sg)); |
700 | if (SCSI_SG_PA(sg) + sg->length - 1 > ISA_DMA_THRESHOLD) | |
fc3fdfcc | 701 | BAD_SG_DMA(SCpnt, scsi_sglist(SCpnt), sg_count, i); |
51cf2249 | 702 | any2scsi(cptr[i].datalen, sg->length); |
1da177e4 | 703 | }; |
fc3fdfcc | 704 | any2scsi(ccb[mbo].datalen, sg_count * sizeof(struct chain)); |
1da177e4 LT |
705 | any2scsi(ccb[mbo].dataptr, SCSI_BUF_PA(cptr)); |
706 | #ifdef DEBUG | |
707 | printk("cptr %x: ", cptr); | |
708 | ptr = (unsigned char *) cptr; | |
709 | for (i = 0; i < 18; i++) | |
710 | printk("%02x ", ptr[i]); | |
711 | #endif | |
712 | } else { | |
713 | ccb[mbo].op = 0; /* SCSI Initiator Command */ | |
714 | SCpnt->host_scribble = NULL; | |
fc3fdfcc BH |
715 | any2scsi(ccb[mbo].datalen, 0); |
716 | any2scsi(ccb[mbo].dataptr, 0); | |
1da177e4 LT |
717 | }; |
718 | ccb[mbo].idlun = (target & 7) << 5 | direction | (lun & 7); /*SCSI Target Id */ | |
719 | ccb[mbo].rsalen = 16; | |
720 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
721 | ccb[mbo].commlinkid = 0; | |
722 | ||
723 | #ifdef DEBUG | |
724 | { | |
725 | int i; | |
726 | printk(KERN_DEBUG "aha1542_command: sending.. "); | |
727 | for (i = 0; i < sizeof(ccb[mbo]) - 10; i++) | |
728 | printk("%02x ", ((unchar *) & ccb[mbo])[i]); | |
729 | }; | |
730 | #endif | |
731 | ||
732 | if (done) { | |
733 | DEB(printk("aha1542_queuecommand: now waiting for interrupt "); | |
734 | aha1542_stat()); | |
735 | SCpnt->scsi_done = done; | |
736 | mb[mbo].status = 1; | |
737 | aha1542_out(SCpnt->device->host->io_port, &ahacmd, 1); /* start scsi command */ | |
738 | DEB(aha1542_stat()); | |
739 | } else | |
740 | printk("aha1542_queuecommand: done can't be NULL\n"); | |
741 | ||
742 | return 0; | |
743 | } | |
744 | ||
745 | /* Initialize mailboxes */ | |
746 | static void setup_mailboxes(int bse, struct Scsi_Host *shpnt) | |
747 | { | |
748 | int i; | |
749 | struct mailbox *mb; | |
750 | struct ccb *ccb; | |
751 | ||
752 | unchar cmd[5] = { CMD_MBINIT, AHA1542_MAILBOXES, 0, 0, 0}; | |
753 | ||
754 | mb = HOSTDATA(shpnt)->mb; | |
755 | ccb = HOSTDATA(shpnt)->ccb; | |
756 | ||
757 | for (i = 0; i < AHA1542_MAILBOXES; i++) { | |
758 | mb[i].status = mb[AHA1542_MAILBOXES + i].status = 0; | |
759 | any2scsi(mb[i].ccbptr, SCSI_BUF_PA(&ccb[i])); | |
760 | }; | |
761 | aha1542_intr_reset(bse); /* reset interrupts, so they don't block */ | |
762 | any2scsi((cmd + 2), SCSI_BUF_PA(mb)); | |
763 | aha1542_out(bse, cmd, 5); | |
764 | WAIT(INTRFLAGS(bse), INTRMASK, HACC, 0); | |
765 | while (0) { | |
766 | fail: | |
767 | printk(KERN_ERR "aha1542_detect: failed setting up mailboxes\n"); | |
768 | } | |
769 | aha1542_intr_reset(bse); | |
770 | } | |
771 | ||
772 | static int __init aha1542_getconfig(int base_io, unsigned char *irq_level, unsigned char *dma_chan, unsigned char *scsi_id) | |
773 | { | |
774 | unchar inquiry_cmd[] = {CMD_RETCONF}; | |
775 | unchar inquiry_result[3]; | |
776 | int i; | |
777 | i = inb(STATUS(base_io)); | |
778 | if (i & DF) { | |
779 | i = inb(DATA(base_io)); | |
780 | }; | |
781 | aha1542_out(base_io, inquiry_cmd, 1); | |
782 | aha1542_in(base_io, inquiry_result, 3); | |
783 | WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); | |
784 | while (0) { | |
785 | fail: | |
786 | printk(KERN_ERR "aha1542_detect: query board settings\n"); | |
787 | } | |
788 | aha1542_intr_reset(base_io); | |
789 | switch (inquiry_result[0]) { | |
790 | case 0x80: | |
791 | *dma_chan = 7; | |
792 | break; | |
793 | case 0x40: | |
794 | *dma_chan = 6; | |
795 | break; | |
796 | case 0x20: | |
797 | *dma_chan = 5; | |
798 | break; | |
799 | case 0x01: | |
800 | *dma_chan = 0; | |
801 | break; | |
802 | case 0: | |
803 | /* This means that the adapter, although Adaptec 1542 compatible, doesn't use a DMA channel. | |
804 | Currently only aware of the BusLogic BT-445S VL-Bus adapter which needs this. */ | |
805 | *dma_chan = 0xFF; | |
806 | break; | |
807 | default: | |
808 | printk(KERN_ERR "Unable to determine Adaptec DMA priority. Disabling board\n"); | |
809 | return -1; | |
810 | }; | |
811 | switch (inquiry_result[1]) { | |
812 | case 0x40: | |
813 | *irq_level = 15; | |
814 | break; | |
815 | case 0x20: | |
816 | *irq_level = 14; | |
817 | break; | |
818 | case 0x8: | |
819 | *irq_level = 12; | |
820 | break; | |
821 | case 0x4: | |
822 | *irq_level = 11; | |
823 | break; | |
824 | case 0x2: | |
825 | *irq_level = 10; | |
826 | break; | |
827 | case 0x1: | |
828 | *irq_level = 9; | |
829 | break; | |
830 | default: | |
831 | printk(KERN_ERR "Unable to determine Adaptec IRQ level. Disabling board\n"); | |
832 | return -1; | |
833 | }; | |
834 | *scsi_id = inquiry_result[2] & 7; | |
835 | return 0; | |
836 | } | |
837 | ||
838 | /* This function should only be called for 1542C boards - we can detect | |
839 | the special firmware settings and unlock the board */ | |
840 | ||
841 | static int __init aha1542_mbenable(int base) | |
842 | { | |
843 | static unchar mbenable_cmd[3]; | |
844 | static unchar mbenable_result[2]; | |
845 | int retval; | |
846 | ||
847 | retval = BIOS_TRANSLATION_6432; | |
848 | ||
849 | mbenable_cmd[0] = CMD_EXTBIOS; | |
850 | aha1542_out(base, mbenable_cmd, 1); | |
851 | if (aha1542_in1(base, mbenable_result, 2)) | |
852 | return retval; | |
853 | WAITd(INTRFLAGS(base), INTRMASK, HACC, 0, 100); | |
854 | aha1542_intr_reset(base); | |
855 | ||
856 | if ((mbenable_result[0] & 0x08) || mbenable_result[1]) { | |
857 | mbenable_cmd[0] = CMD_MBENABLE; | |
858 | mbenable_cmd[1] = 0; | |
859 | mbenable_cmd[2] = mbenable_result[1]; | |
860 | ||
861 | if ((mbenable_result[0] & 0x08) && (mbenable_result[1] & 0x03)) | |
862 | retval = BIOS_TRANSLATION_25563; | |
863 | ||
864 | aha1542_out(base, mbenable_cmd, 3); | |
865 | WAIT(INTRFLAGS(base), INTRMASK, HACC, 0); | |
866 | }; | |
867 | while (0) { | |
868 | fail: | |
869 | printk(KERN_ERR "aha1542_mbenable: Mailbox init failed\n"); | |
870 | } | |
871 | aha1542_intr_reset(base); | |
872 | return retval; | |
873 | } | |
874 | ||
875 | /* Query the board to find out if it is a 1542 or a 1740, or whatever. */ | |
876 | static int __init aha1542_query(int base_io, int *transl) | |
877 | { | |
878 | unchar inquiry_cmd[] = {CMD_INQUIRY}; | |
879 | unchar inquiry_result[4]; | |
880 | int i; | |
881 | i = inb(STATUS(base_io)); | |
882 | if (i & DF) { | |
883 | i = inb(DATA(base_io)); | |
884 | }; | |
885 | aha1542_out(base_io, inquiry_cmd, 1); | |
886 | aha1542_in(base_io, inquiry_result, 4); | |
887 | WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); | |
888 | while (0) { | |
889 | fail: | |
890 | printk(KERN_ERR "aha1542_detect: query card type\n"); | |
891 | } | |
892 | aha1542_intr_reset(base_io); | |
893 | ||
894 | *transl = BIOS_TRANSLATION_6432; /* Default case */ | |
895 | ||
896 | /* For an AHA1740 series board, we ignore the board since there is a | |
897 | hardware bug which can lead to wrong blocks being returned if the board | |
898 | is operating in the 1542 emulation mode. Since there is an extended mode | |
899 | driver, we simply ignore the board and let the 1740 driver pick it up. | |
900 | */ | |
901 | ||
902 | if (inquiry_result[0] == 0x43) { | |
903 | printk(KERN_INFO "aha1542.c: Emulation mode not supported for AHA 174N hardware.\n"); | |
904 | return 1; | |
905 | }; | |
906 | ||
907 | /* Always call this - boards that do not support extended bios translation | |
908 | will ignore the command, and we will set the proper default */ | |
909 | ||
910 | *transl = aha1542_mbenable(base_io); | |
911 | ||
912 | return 0; | |
913 | } | |
914 | ||
915 | #ifndef MODULE | |
916 | static char *setup_str[MAXBOARDS] __initdata; | |
917 | static int setup_idx = 0; | |
918 | ||
919 | static void __init aha1542_setup(char *str, int *ints) | |
920 | { | |
921 | const char *ahausage = "aha1542: usage: aha1542=<PORTBASE>[,<BUSON>,<BUSOFF>[,<DMASPEED>]]\n"; | |
922 | int setup_portbase; | |
923 | ||
924 | if (setup_idx >= MAXBOARDS) { | |
925 | printk(KERN_ERR "aha1542: aha1542_setup called too many times! Bad LILO params ?\n"); | |
926 | printk(KERN_ERR " Entryline 1: %s\n", setup_str[0]); | |
927 | printk(KERN_ERR " Entryline 2: %s\n", setup_str[1]); | |
928 | printk(KERN_ERR " This line: %s\n", str); | |
929 | return; | |
930 | } | |
931 | if (ints[0] < 1 || ints[0] > 4) { | |
932 | printk(KERN_ERR "aha1542: %s\n", str); | |
933 | printk(ahausage); | |
934 | printk(KERN_ERR "aha1542: Wrong parameters may cause system malfunction.. We try anyway..\n"); | |
935 | } | |
936 | setup_called[setup_idx] = ints[0]; | |
937 | setup_str[setup_idx] = str; | |
938 | ||
939 | setup_portbase = ints[0] >= 1 ? ints[1] : 0; /* Preserve the default value.. */ | |
940 | setup_buson[setup_idx] = ints[0] >= 2 ? ints[2] : 7; | |
941 | setup_busoff[setup_idx] = ints[0] >= 3 ? ints[3] : 5; | |
942 | if (ints[0] >= 4) | |
943 | { | |
944 | int atbt = -1; | |
945 | switch (ints[4]) { | |
946 | case 5: | |
947 | atbt = 0x00; | |
948 | break; | |
949 | case 6: | |
950 | atbt = 0x04; | |
951 | break; | |
952 | case 7: | |
953 | atbt = 0x01; | |
954 | break; | |
955 | case 8: | |
956 | atbt = 0x02; | |
957 | break; | |
958 | case 10: | |
959 | atbt = 0x03; | |
960 | break; | |
961 | default: | |
962 | printk(KERN_ERR "aha1542: %s\n", str); | |
963 | printk(ahausage); | |
964 | printk(KERN_ERR "aha1542: Valid values for DMASPEED are 5-8, 10 MB/s. Using jumper defaults.\n"); | |
965 | break; | |
966 | } | |
967 | setup_dmaspeed[setup_idx] = atbt; | |
968 | } | |
969 | if (setup_portbase != 0) | |
970 | bases[setup_idx] = setup_portbase; | |
971 | ||
972 | ++setup_idx; | |
973 | } | |
974 | ||
975 | static int __init do_setup(char *str) | |
976 | { | |
977 | int ints[5]; | |
978 | ||
979 | int count=setup_idx; | |
980 | ||
6391a113 | 981 | get_options(str, ARRAY_SIZE(ints), ints); |
1da177e4 LT |
982 | aha1542_setup(str,ints); |
983 | ||
984 | return count<setup_idx; | |
985 | } | |
986 | ||
987 | __setup("aha1542=",do_setup); | |
988 | #endif | |
989 | ||
990 | /* return non-zero on detection */ | |
d0be4a7d | 991 | static int __init aha1542_detect(struct scsi_host_template * tpnt) |
1da177e4 LT |
992 | { |
993 | unsigned char dma_chan; | |
994 | unsigned char irq_level; | |
995 | unsigned char scsi_id; | |
996 | unsigned long flags; | |
997 | unsigned int base_io; | |
998 | int trans; | |
999 | struct Scsi_Host *shpnt = NULL; | |
1000 | int count = 0; | |
1001 | int indx; | |
1002 | ||
1003 | DEB(printk("aha1542_detect: \n")); | |
1004 | ||
1005 | tpnt->proc_name = "aha1542"; | |
1006 | ||
1007 | #ifdef MODULE | |
1008 | bases[0] = aha1542[0]; | |
1009 | setup_buson[0] = aha1542[1]; | |
1010 | setup_busoff[0] = aha1542[2]; | |
1011 | { | |
1012 | int atbt = -1; | |
1013 | switch (aha1542[3]) { | |
1014 | case 5: | |
1015 | atbt = 0x00; | |
1016 | break; | |
1017 | case 6: | |
1018 | atbt = 0x04; | |
1019 | break; | |
1020 | case 7: | |
1021 | atbt = 0x01; | |
1022 | break; | |
1023 | case 8: | |
1024 | atbt = 0x02; | |
1025 | break; | |
1026 | case 10: | |
1027 | atbt = 0x03; | |
1028 | break; | |
1029 | }; | |
1030 | setup_dmaspeed[0] = atbt; | |
1031 | } | |
1032 | #endif | |
1033 | ||
1034 | /* | |
1035 | * Find MicroChannel cards (AHA1640) | |
1036 | */ | |
1037 | #ifdef CONFIG_MCA_LEGACY | |
1038 | if(MCA_bus) { | |
1039 | int slot = 0; | |
1040 | int pos = 0; | |
1041 | ||
6391a113 | 1042 | for (indx = 0; (slot != MCA_NOTFOUND) && (indx < ARRAY_SIZE(bases)); indx++) { |
1da177e4 LT |
1043 | |
1044 | if (bases[indx]) | |
1045 | continue; | |
1046 | ||
1047 | /* Detect only AHA-1640 cards -- MCA ID 0F1F */ | |
1048 | slot = mca_find_unused_adapter(0x0f1f, slot); | |
1049 | if (slot == MCA_NOTFOUND) | |
1050 | break; | |
1051 | ||
1da177e4 LT |
1052 | /* Found one */ |
1053 | pos = mca_read_stored_pos(slot, 3); | |
6391a113 | 1054 | |
1da177e4 LT |
1055 | /* Decode address */ |
1056 | if (pos & 0x80) { | |
1057 | if (pos & 0x02) { | |
1058 | if (pos & 0x01) | |
1059 | bases[indx] = 0x334; | |
1060 | else | |
1061 | bases[indx] = 0x234; | |
1062 | } else { | |
1063 | if (pos & 0x01) | |
1064 | bases[indx] = 0x134; | |
1065 | } | |
1066 | } else { | |
1067 | if (pos & 0x02) { | |
1068 | if (pos & 0x01) | |
1069 | bases[indx] = 0x330; | |
1070 | else | |
1071 | bases[indx] = 0x230; | |
1072 | } else { | |
1073 | if (pos & 0x01) | |
1074 | bases[indx] = 0x130; | |
1075 | } | |
1076 | } | |
1077 | ||
1078 | /* No need to decode IRQ and Arb level -- those are | |
1079 | * read off the card later. | |
1080 | */ | |
1081 | printk(KERN_INFO "Found an AHA-1640 in MCA slot %d, I/O 0x%04x\n", slot, bases[indx]); | |
1082 | ||
1083 | mca_set_adapter_name(slot, "Adapter AHA-1640"); | |
1084 | mca_set_adapter_procfn(slot, NULL, NULL); | |
1085 | mca_mark_as_used(slot); | |
6391a113 | 1086 | |
1da177e4 LT |
1087 | /* Go on */ |
1088 | slot++; | |
1089 | } | |
6391a113 | 1090 | |
1da177e4 LT |
1091 | } |
1092 | #endif | |
1093 | ||
1094 | /* | |
1095 | * Hunt for ISA Plug'n'Pray Adaptecs (AHA1535) | |
1096 | */ | |
6391a113 | 1097 | |
1da177e4 LT |
1098 | if(isapnp) |
1099 | { | |
1100 | struct pnp_dev *pdev = NULL; | |
6391a113 | 1101 | for(indx = 0; indx < ARRAY_SIZE(bases); indx++) { |
1da177e4 LT |
1102 | if(bases[indx]) |
1103 | continue; | |
1104 | pdev = pnp_find_dev(NULL, ISAPNP_VENDOR('A', 'D', 'P'), | |
1105 | ISAPNP_FUNCTION(0x1542), pdev); | |
1106 | if(pdev==NULL) | |
1107 | break; | |
1108 | /* | |
1109 | * Activate the PnP card | |
1110 | */ | |
6391a113 | 1111 | |
1da177e4 LT |
1112 | if(pnp_device_attach(pdev)<0) |
1113 | continue; | |
6391a113 | 1114 | |
1da177e4 LT |
1115 | if(pnp_activate_dev(pdev)<0) { |
1116 | pnp_device_detach(pdev); | |
1117 | continue; | |
1118 | } | |
6391a113 | 1119 | |
1da177e4 LT |
1120 | if(!pnp_port_valid(pdev, 0)) { |
1121 | pnp_device_detach(pdev); | |
1122 | continue; | |
1123 | } | |
6391a113 | 1124 | |
1da177e4 | 1125 | bases[indx] = pnp_port_start(pdev, 0); |
6391a113 | 1126 | |
1da177e4 LT |
1127 | /* The card can be queried for its DMA, we have |
1128 | the DMA set up that is enough */ | |
6391a113 | 1129 | |
1da177e4 LT |
1130 | printk(KERN_INFO "ISAPnP found an AHA1535 at I/O 0x%03X\n", bases[indx]); |
1131 | } | |
1132 | } | |
6391a113 | 1133 | for (indx = 0; indx < ARRAY_SIZE(bases); indx++) |
1da177e4 LT |
1134 | if (bases[indx] != 0 && request_region(bases[indx], 4, "aha1542")) { |
1135 | shpnt = scsi_register(tpnt, | |
1136 | sizeof(struct aha1542_hostdata)); | |
1137 | ||
1138 | if(shpnt==NULL) { | |
1139 | release_region(bases[indx], 4); | |
1140 | continue; | |
1141 | } | |
1142 | /* For now we do this - until kmalloc is more intelligent | |
1143 | we are resigned to stupid hacks like this */ | |
1144 | if (SCSI_BUF_PA(shpnt) >= ISA_DMA_THRESHOLD) { | |
1145 | printk(KERN_ERR "Invalid address for shpnt with 1542.\n"); | |
1146 | goto unregister; | |
1147 | } | |
1148 | if (!aha1542_test_port(bases[indx], shpnt)) | |
1149 | goto unregister; | |
1150 | ||
1151 | ||
1152 | base_io = bases[indx]; | |
1153 | ||
1154 | /* Set the Bus on/off-times as not to ruin floppy performance */ | |
1155 | { | |
1156 | unchar oncmd[] = {CMD_BUSON_TIME, 7}; | |
1157 | unchar offcmd[] = {CMD_BUSOFF_TIME, 5}; | |
1158 | ||
1159 | if (setup_called[indx]) { | |
1160 | oncmd[1] = setup_buson[indx]; | |
1161 | offcmd[1] = setup_busoff[indx]; | |
1162 | } | |
1163 | aha1542_intr_reset(base_io); | |
1164 | aha1542_out(base_io, oncmd, 2); | |
1165 | WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); | |
1166 | aha1542_intr_reset(base_io); | |
1167 | aha1542_out(base_io, offcmd, 2); | |
1168 | WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); | |
1169 | if (setup_dmaspeed[indx] >= 0) { | |
1170 | unchar dmacmd[] = {CMD_DMASPEED, 0}; | |
1171 | dmacmd[1] = setup_dmaspeed[indx]; | |
1172 | aha1542_intr_reset(base_io); | |
1173 | aha1542_out(base_io, dmacmd, 2); | |
1174 | WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); | |
1175 | } | |
1176 | while (0) { | |
1177 | fail: | |
1178 | printk(KERN_ERR "aha1542_detect: setting bus on/off-time failed\n"); | |
1179 | } | |
1180 | aha1542_intr_reset(base_io); | |
1181 | } | |
1182 | if (aha1542_query(base_io, &trans)) | |
1183 | goto unregister; | |
1184 | ||
1185 | if (aha1542_getconfig(base_io, &irq_level, &dma_chan, &scsi_id) == -1) | |
1186 | goto unregister; | |
1187 | ||
1188 | printk(KERN_INFO "Configuring Adaptec (SCSI-ID %d) at IO:%x, IRQ %d", scsi_id, base_io, irq_level); | |
1189 | if (dma_chan != 0xFF) | |
1190 | printk(", DMA priority %d", dma_chan); | |
1191 | printk("\n"); | |
1192 | ||
1193 | DEB(aha1542_stat()); | |
1194 | setup_mailboxes(base_io, shpnt); | |
1195 | ||
1196 | DEB(aha1542_stat()); | |
1197 | ||
1198 | DEB(printk("aha1542_detect: enable interrupt channel %d\n", irq_level)); | |
1199 | spin_lock_irqsave(&aha1542_lock, flags); | |
1200 | if (request_irq(irq_level, do_aha1542_intr_handle, 0, "aha1542", NULL)) { | |
1201 | printk(KERN_ERR "Unable to allocate IRQ for adaptec controller.\n"); | |
1202 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
1203 | goto unregister; | |
1204 | } | |
1205 | if (dma_chan != 0xFF) { | |
1206 | if (request_dma(dma_chan, "aha1542")) { | |
1207 | printk(KERN_ERR "Unable to allocate DMA channel for Adaptec.\n"); | |
1208 | free_irq(irq_level, NULL); | |
1209 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
1210 | goto unregister; | |
1211 | } | |
1212 | if (dma_chan == 0 || dma_chan >= 5) { | |
1213 | set_dma_mode(dma_chan, DMA_MODE_CASCADE); | |
1214 | enable_dma(dma_chan); | |
1215 | } | |
1216 | } | |
1217 | aha_host[irq_level - 9] = shpnt; | |
1218 | shpnt->this_id = scsi_id; | |
1219 | shpnt->unique_id = base_io; | |
1220 | shpnt->io_port = base_io; | |
1221 | shpnt->n_io_port = 4; /* Number of bytes of I/O space used */ | |
1222 | shpnt->dma_channel = dma_chan; | |
1223 | shpnt->irq = irq_level; | |
1224 | HOSTDATA(shpnt)->bios_translation = trans; | |
1225 | if (trans == BIOS_TRANSLATION_25563) | |
1226 | printk(KERN_INFO "aha1542.c: Using extended bios translation\n"); | |
1227 | HOSTDATA(shpnt)->aha1542_last_mbi_used = (2 * AHA1542_MAILBOXES - 1); | |
1228 | HOSTDATA(shpnt)->aha1542_last_mbo_used = (AHA1542_MAILBOXES - 1); | |
1229 | memset(HOSTDATA(shpnt)->SCint, 0, sizeof(HOSTDATA(shpnt)->SCint)); | |
1230 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
1231 | #if 0 | |
1232 | DEB(printk(" *** READ CAPACITY ***\n")); | |
1233 | ||
1234 | { | |
1235 | unchar buf[8]; | |
1236 | static unchar cmd[] = { READ_CAPACITY, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; | |
1237 | int i; | |
1238 | ||
1239 | for (i = 0; i < sizeof(buf); ++i) | |
1240 | buf[i] = 0x87; | |
1241 | for (i = 0; i < 2; ++i) | |
1242 | if (!aha1542_command(i, cmd, buf, sizeof(buf))) { | |
1243 | printk(KERN_DEBUG "aha_detect: LU %d sector_size %d device_size %d\n", | |
1244 | i, xscsi2int(buf + 4), xscsi2int(buf)); | |
1245 | } | |
1246 | } | |
1247 | ||
1248 | DEB(printk(" *** NOW RUNNING MY OWN TEST *** \n")); | |
1249 | ||
1250 | for (i = 0; i < 4; ++i) { | |
1251 | unsigned char cmd[10]; | |
1252 | static buffer[512]; | |
1253 | ||
1254 | cmd[0] = READ_10; | |
1255 | cmd[1] = 0; | |
1256 | xany2scsi(cmd + 2, i); | |
1257 | cmd[6] = 0; | |
1258 | cmd[7] = 0; | |
1259 | cmd[8] = 1; | |
1260 | cmd[9] = 0; | |
1261 | aha1542_command(0, cmd, buffer, 512); | |
1262 | } | |
1263 | #endif | |
1264 | count++; | |
1265 | continue; | |
1266 | unregister: | |
1267 | release_region(bases[indx], 4); | |
1268 | scsi_unregister(shpnt); | |
1269 | continue; | |
1270 | ||
1271 | }; | |
1272 | ||
1273 | return count; | |
1274 | } | |
1275 | ||
1276 | static int aha1542_release(struct Scsi_Host *shost) | |
1277 | { | |
1278 | if (shost->irq) | |
1279 | free_irq(shost->irq, NULL); | |
1280 | if (shost->dma_channel != 0xff) | |
1281 | free_dma(shost->dma_channel); | |
1282 | if (shost->io_port && shost->n_io_port) | |
1283 | release_region(shost->io_port, shost->n_io_port); | |
1284 | scsi_unregister(shost); | |
1285 | return 0; | |
1286 | } | |
1287 | ||
1288 | static int aha1542_restart(struct Scsi_Host *shost) | |
1289 | { | |
1290 | int i; | |
1291 | int count = 0; | |
1292 | #if 0 | |
1293 | unchar ahacmd = CMD_START_SCSI; | |
1294 | #endif | |
1295 | ||
1296 | for (i = 0; i < AHA1542_MAILBOXES; i++) | |
1297 | if (HOSTDATA(shost)->SCint[i] && | |
1298 | !(HOSTDATA(shost)->SCint[i]->device->soft_reset)) { | |
1299 | #if 0 | |
1300 | HOSTDATA(shost)->mb[i].status = 1; /* Indicate ready to restart... */ | |
1301 | #endif | |
1302 | count++; | |
1303 | } | |
1304 | printk(KERN_DEBUG "Potential to restart %d stalled commands...\n", count); | |
1305 | #if 0 | |
1306 | /* start scsi command */ | |
1307 | if (count) | |
1308 | aha1542_out(shost->io_port, &ahacmd, 1); | |
1309 | #endif | |
1310 | return 0; | |
1311 | } | |
1312 | ||
1da177e4 LT |
1313 | /* |
1314 | * This is a device reset. This is handled by sending a special command | |
1315 | * to the device. | |
1316 | */ | |
1317 | static int aha1542_dev_reset(Scsi_Cmnd * SCpnt) | |
1318 | { | |
1319 | unsigned long flags; | |
1320 | struct mailbox *mb; | |
1321 | unchar target = SCpnt->device->id; | |
1322 | unchar lun = SCpnt->device->lun; | |
1323 | int mbo; | |
1324 | struct ccb *ccb; | |
1325 | unchar ahacmd = CMD_START_SCSI; | |
1326 | ||
1327 | ccb = HOSTDATA(SCpnt->device->host)->ccb; | |
1328 | mb = HOSTDATA(SCpnt->device->host)->mb; | |
1329 | ||
1330 | spin_lock_irqsave(&aha1542_lock, flags); | |
1331 | mbo = HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used + 1; | |
1332 | if (mbo >= AHA1542_MAILBOXES) | |
1333 | mbo = 0; | |
1334 | ||
1335 | do { | |
1336 | if (mb[mbo].status == 0 && HOSTDATA(SCpnt->device->host)->SCint[mbo] == NULL) | |
1337 | break; | |
1338 | mbo++; | |
1339 | if (mbo >= AHA1542_MAILBOXES) | |
1340 | mbo = 0; | |
1341 | } while (mbo != HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used); | |
1342 | ||
1343 | if (mb[mbo].status || HOSTDATA(SCpnt->device->host)->SCint[mbo]) | |
1344 | panic("Unable to find empty mailbox for aha1542.\n"); | |
1345 | ||
1346 | HOSTDATA(SCpnt->device->host)->SCint[mbo] = SCpnt; /* This will effectively | |
1347 | prevent someone else from | |
1348 | screwing with this cdb. */ | |
1349 | ||
1350 | HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used = mbo; | |
1351 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
1352 | ||
1353 | any2scsi(mb[mbo].ccbptr, SCSI_BUF_PA(&ccb[mbo])); /* This gets trashed for some reason */ | |
1354 | ||
1355 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
1356 | ||
1357 | ccb[mbo].op = 0x81; /* BUS DEVICE RESET */ | |
1358 | ||
1359 | ccb[mbo].idlun = (target & 7) << 5 | (lun & 7); /*SCSI Target Id */ | |
1360 | ||
1361 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
1362 | ccb[mbo].commlinkid = 0; | |
1363 | ||
1364 | /* | |
1365 | * Now tell the 1542 to flush all pending commands for this | |
1366 | * target | |
1367 | */ | |
1368 | aha1542_out(SCpnt->device->host->io_port, &ahacmd, 1); | |
1369 | ||
017560fc JG |
1370 | scmd_printk(KERN_WARNING, SCpnt, |
1371 | "Trying device reset for target\n"); | |
1da177e4 LT |
1372 | |
1373 | return SUCCESS; | |
1374 | ||
1375 | ||
1376 | #ifdef ERIC_neverdef | |
1377 | /* | |
1378 | * With the 1542 we apparently never get an interrupt to | |
1379 | * acknowledge a device reset being sent. Then again, Leonard | |
1380 | * says we are doing this wrong in the first place... | |
1381 | * | |
1382 | * Take a wait and see attitude. If we get spurious interrupts, | |
1383 | * then the device reset is doing something sane and useful, and | |
1384 | * we will wait for the interrupt to post completion. | |
1385 | */ | |
1386 | printk(KERN_WARNING "Sent BUS DEVICE RESET to target %d\n", SCpnt->target); | |
1387 | ||
1388 | /* | |
1389 | * Free the command block for all commands running on this | |
1390 | * target... | |
1391 | */ | |
1392 | for (i = 0; i < AHA1542_MAILBOXES; i++) { | |
1393 | if (HOSTDATA(SCpnt->host)->SCint[i] && | |
1394 | HOSTDATA(SCpnt->host)->SCint[i]->target == SCpnt->target) { | |
1395 | Scsi_Cmnd *SCtmp; | |
1396 | SCtmp = HOSTDATA(SCpnt->host)->SCint[i]; | |
c9475cb0 JJ |
1397 | kfree(SCtmp->host_scribble); |
1398 | SCtmp->host_scribble = NULL; | |
1da177e4 LT |
1399 | HOSTDATA(SCpnt->host)->SCint[i] = NULL; |
1400 | HOSTDATA(SCpnt->host)->mb[i].status = 0; | |
1401 | } | |
1402 | } | |
1403 | return SUCCESS; | |
1404 | ||
1405 | return FAILED; | |
1406 | #endif /* ERIC_neverdef */ | |
1407 | } | |
1408 | ||
1409 | static int aha1542_bus_reset(Scsi_Cmnd * SCpnt) | |
1410 | { | |
1411 | int i; | |
1412 | ||
1413 | /* | |
1414 | * This does a scsi reset for all devices on the bus. | |
1415 | * In principle, we could also reset the 1542 - should | |
1416 | * we do this? Try this first, and we can add that later | |
1417 | * if it turns out to be useful. | |
1418 | */ | |
1419 | outb(SCRST, CONTROL(SCpnt->device->host->io_port)); | |
1420 | ||
1421 | /* | |
1422 | * Wait for the thing to settle down a bit. Unfortunately | |
1423 | * this is going to basically lock up the machine while we | |
1424 | * wait for this to complete. To be 100% correct, we need to | |
1425 | * check for timeout, and if we are doing something like this | |
1426 | * we are pretty desperate anyways. | |
1427 | */ | |
1da177e4 | 1428 | ssleep(4); |
68b3aa7c | 1429 | |
1da177e4 LT |
1430 | spin_lock_irq(SCpnt->device->host->host_lock); |
1431 | ||
1432 | WAIT(STATUS(SCpnt->device->host->io_port), | |
1433 | STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); | |
1434 | ||
1435 | /* | |
1436 | * Now try to pick up the pieces. For all pending commands, | |
1437 | * free any internal data structures, and basically clear things | |
1438 | * out. We do not try and restart any commands or anything - | |
1439 | * the strategy handler takes care of that crap. | |
1440 | */ | |
1441 | printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->device->host->host_no); | |
1442 | ||
1443 | for (i = 0; i < AHA1542_MAILBOXES; i++) { | |
1444 | if (HOSTDATA(SCpnt->device->host)->SCint[i] != NULL) { | |
1445 | Scsi_Cmnd *SCtmp; | |
1446 | SCtmp = HOSTDATA(SCpnt->device->host)->SCint[i]; | |
1447 | ||
1448 | ||
1449 | if (SCtmp->device->soft_reset) { | |
1450 | /* | |
1451 | * If this device implements the soft reset option, | |
1452 | * then it is still holding onto the command, and | |
1453 | * may yet complete it. In this case, we don't | |
1454 | * flush the data. | |
1455 | */ | |
1456 | continue; | |
1457 | } | |
c9475cb0 JJ |
1458 | kfree(SCtmp->host_scribble); |
1459 | SCtmp->host_scribble = NULL; | |
1da177e4 LT |
1460 | HOSTDATA(SCpnt->device->host)->SCint[i] = NULL; |
1461 | HOSTDATA(SCpnt->device->host)->mb[i].status = 0; | |
1462 | } | |
1463 | } | |
1464 | ||
68b3aa7c | 1465 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1da177e4 LT |
1466 | return SUCCESS; |
1467 | ||
1468 | fail: | |
68b3aa7c | 1469 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1da177e4 LT |
1470 | return FAILED; |
1471 | } | |
1472 | ||
1473 | static int aha1542_host_reset(Scsi_Cmnd * SCpnt) | |
1474 | { | |
1475 | int i; | |
1476 | ||
1477 | /* | |
1478 | * This does a scsi reset for all devices on the bus. | |
1479 | * In principle, we could also reset the 1542 - should | |
1480 | * we do this? Try this first, and we can add that later | |
1481 | * if it turns out to be useful. | |
1482 | */ | |
1483 | outb(HRST | SCRST, CONTROL(SCpnt->device->host->io_port)); | |
1484 | ||
1485 | /* | |
1486 | * Wait for the thing to settle down a bit. Unfortunately | |
1487 | * this is going to basically lock up the machine while we | |
1488 | * wait for this to complete. To be 100% correct, we need to | |
1489 | * check for timeout, and if we are doing something like this | |
1490 | * we are pretty desperate anyways. | |
1491 | */ | |
1da177e4 LT |
1492 | ssleep(4); |
1493 | spin_lock_irq(SCpnt->device->host->host_lock); | |
1494 | ||
1495 | WAIT(STATUS(SCpnt->device->host->io_port), | |
1496 | STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); | |
1497 | ||
1498 | /* | |
1499 | * We need to do this too before the 1542 can interact with | |
1500 | * us again. | |
1501 | */ | |
1502 | setup_mailboxes(SCpnt->device->host->io_port, SCpnt->device->host); | |
1503 | ||
1504 | /* | |
1505 | * Now try to pick up the pieces. For all pending commands, | |
1506 | * free any internal data structures, and basically clear things | |
1507 | * out. We do not try and restart any commands or anything - | |
1508 | * the strategy handler takes care of that crap. | |
1509 | */ | |
1510 | printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->device->host->host_no); | |
1511 | ||
1512 | for (i = 0; i < AHA1542_MAILBOXES; i++) { | |
1513 | if (HOSTDATA(SCpnt->device->host)->SCint[i] != NULL) { | |
1514 | Scsi_Cmnd *SCtmp; | |
1515 | SCtmp = HOSTDATA(SCpnt->device->host)->SCint[i]; | |
1516 | ||
1517 | if (SCtmp->device->soft_reset) { | |
1518 | /* | |
1519 | * If this device implements the soft reset option, | |
1520 | * then it is still holding onto the command, and | |
1521 | * may yet complete it. In this case, we don't | |
1522 | * flush the data. | |
1523 | */ | |
1524 | continue; | |
1525 | } | |
c9475cb0 JJ |
1526 | kfree(SCtmp->host_scribble); |
1527 | SCtmp->host_scribble = NULL; | |
1da177e4 LT |
1528 | HOSTDATA(SCpnt->device->host)->SCint[i] = NULL; |
1529 | HOSTDATA(SCpnt->device->host)->mb[i].status = 0; | |
1530 | } | |
1531 | } | |
1532 | ||
df0ae249 | 1533 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1da177e4 LT |
1534 | return SUCCESS; |
1535 | ||
1536 | fail: | |
df0ae249 | 1537 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1da177e4 LT |
1538 | return FAILED; |
1539 | } | |
1540 | ||
1541 | #if 0 | |
1542 | /* | |
1543 | * These are the old error handling routines. They are only temporarily | |
1544 | * here while we play with the new error handling code. | |
1545 | */ | |
1546 | static int aha1542_old_abort(Scsi_Cmnd * SCpnt) | |
1547 | { | |
1548 | #if 0 | |
1549 | unchar ahacmd = CMD_START_SCSI; | |
1550 | unsigned long flags; | |
1551 | struct mailbox *mb; | |
1552 | int mbi, mbo, i; | |
1553 | ||
1554 | printk(KERN_DEBUG "In aha1542_abort: %x %x\n", | |
1555 | inb(STATUS(SCpnt->host->io_port)), | |
1556 | inb(INTRFLAGS(SCpnt->host->io_port))); | |
1557 | ||
1558 | spin_lock_irqsave(&aha1542_lock, flags); | |
1559 | mb = HOSTDATA(SCpnt->host)->mb; | |
1560 | mbi = HOSTDATA(SCpnt->host)->aha1542_last_mbi_used + 1; | |
1561 | if (mbi >= 2 * AHA1542_MAILBOXES) | |
1562 | mbi = AHA1542_MAILBOXES; | |
1563 | ||
1564 | do { | |
1565 | if (mb[mbi].status != 0) | |
1566 | break; | |
1567 | mbi++; | |
1568 | if (mbi >= 2 * AHA1542_MAILBOXES) | |
1569 | mbi = AHA1542_MAILBOXES; | |
1570 | } while (mbi != HOSTDATA(SCpnt->host)->aha1542_last_mbi_used); | |
1571 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
1572 | ||
1573 | if (mb[mbi].status) { | |
1574 | printk(KERN_ERR "Lost interrupt discovered on irq %d - attempting to recover\n", | |
1575 | SCpnt->host->irq); | |
1576 | aha1542_intr_handle(SCpnt->host, NULL); | |
1577 | return 0; | |
1578 | } | |
1579 | /* OK, no lost interrupt. Try looking to see how many pending commands | |
1580 | we think we have. */ | |
1581 | ||
1582 | for (i = 0; i < AHA1542_MAILBOXES; i++) | |
1583 | if (HOSTDATA(SCpnt->host)->SCint[i]) { | |
1584 | if (HOSTDATA(SCpnt->host)->SCint[i] == SCpnt) { | |
1585 | printk(KERN_ERR "Timed out command pending for %s\n", | |
1586 | SCpnt->request->rq_disk ? | |
1587 | SCpnt->request->rq_disk->disk_name : "?" | |
1588 | ); | |
1589 | if (HOSTDATA(SCpnt->host)->mb[i].status) { | |
1590 | printk(KERN_ERR "OGMB still full - restarting\n"); | |
1591 | aha1542_out(SCpnt->host->io_port, &ahacmd, 1); | |
1592 | }; | |
1593 | } else | |
1594 | printk(KERN_ERR "Other pending command %s\n", | |
1595 | SCpnt->request->rq_disk ? | |
1596 | SCpnt->request->rq_disk->disk_name : "?" | |
1597 | ); | |
1598 | } | |
1599 | #endif | |
1600 | ||
1601 | DEB(printk("aha1542_abort\n")); | |
1602 | #if 0 | |
1603 | spin_lock_irqsave(&aha1542_lock, flags); | |
1604 | for (mbo = 0; mbo < AHA1542_MAILBOXES; mbo++) { | |
1605 | if (SCpnt == HOSTDATA(SCpnt->host)->SCint[mbo]) { | |
1606 | mb[mbo].status = 2; /* Abort command */ | |
1607 | aha1542_out(SCpnt->host->io_port, &ahacmd, 1); /* start scsi command */ | |
1608 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
1609 | break; | |
1610 | } | |
1611 | } | |
1612 | if (AHA1542_MAILBOXES == mbo) | |
1613 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
1614 | #endif | |
1615 | return SCSI_ABORT_SNOOZE; | |
1616 | } | |
1617 | ||
1618 | /* We do not implement a reset function here, but the upper level code | |
1619 | assumes that it will get some kind of response for the command in | |
1620 | SCpnt. We must oblige, or the command will hang the scsi system. | |
1621 | For a first go, we assume that the 1542 notifies us with all of the | |
1622 | pending commands (it does implement soft reset, after all). */ | |
1623 | ||
1624 | static int aha1542_old_reset(Scsi_Cmnd * SCpnt, unsigned int reset_flags) | |
1625 | { | |
1626 | unchar ahacmd = CMD_START_SCSI; | |
1627 | int i; | |
1628 | ||
1629 | /* | |
1630 | * See if a bus reset was suggested. | |
1631 | */ | |
1632 | if (reset_flags & SCSI_RESET_SUGGEST_BUS_RESET) { | |
1633 | /* | |
1634 | * This does a scsi reset for all devices on the bus. | |
1635 | * In principle, we could also reset the 1542 - should | |
1636 | * we do this? Try this first, and we can add that later | |
1637 | * if it turns out to be useful. | |
1638 | */ | |
1639 | outb(HRST | SCRST, CONTROL(SCpnt->host->io_port)); | |
1640 | ||
1641 | /* | |
1642 | * Wait for the thing to settle down a bit. Unfortunately | |
1643 | * this is going to basically lock up the machine while we | |
1644 | * wait for this to complete. To be 100% correct, we need to | |
1645 | * check for timeout, and if we are doing something like this | |
1646 | * we are pretty desperate anyways. | |
1647 | */ | |
1648 | WAIT(STATUS(SCpnt->host->io_port), | |
1649 | STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); | |
1650 | ||
1651 | /* | |
1652 | * We need to do this too before the 1542 can interact with | |
1653 | * us again. | |
1654 | */ | |
1655 | setup_mailboxes(SCpnt->host->io_port, SCpnt->host); | |
1656 | ||
1657 | /* | |
1658 | * Now try to pick up the pieces. Restart all commands | |
1659 | * that are currently active on the bus, and reset all of | |
1660 | * the datastructures. We have some time to kill while | |
1661 | * things settle down, so print a nice message. | |
1662 | */ | |
1663 | printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->host->host_no); | |
1664 | ||
1665 | for (i = 0; i < AHA1542_MAILBOXES; i++) | |
1666 | if (HOSTDATA(SCpnt->host)->SCint[i] != NULL) { | |
1667 | Scsi_Cmnd *SCtmp; | |
1668 | SCtmp = HOSTDATA(SCpnt->host)->SCint[i]; | |
1669 | SCtmp->result = DID_RESET << 16; | |
c9475cb0 JJ |
1670 | kfree(SCtmp->host_scribble); |
1671 | SCtmp->host_scribble = NULL; | |
1da177e4 LT |
1672 | printk(KERN_WARNING "Sending DID_RESET for target %d\n", SCpnt->target); |
1673 | SCtmp->scsi_done(SCpnt); | |
1674 | ||
1675 | HOSTDATA(SCpnt->host)->SCint[i] = NULL; | |
1676 | HOSTDATA(SCpnt->host)->mb[i].status = 0; | |
1677 | } | |
1678 | /* | |
1679 | * Now tell the mid-level code what we did here. Since | |
1680 | * we have restarted all of the outstanding commands, | |
1681 | * then report SUCCESS. | |
1682 | */ | |
1683 | return (SCSI_RESET_SUCCESS | SCSI_RESET_BUS_RESET); | |
1684 | fail: | |
1685 | printk(KERN_CRIT "aha1542.c: Unable to perform hard reset.\n"); | |
1686 | printk(KERN_CRIT "Power cycle machine to reset\n"); | |
1687 | return (SCSI_RESET_ERROR | SCSI_RESET_BUS_RESET); | |
1688 | ||
1689 | ||
1690 | } else { | |
1691 | /* This does a selective reset of just the one device */ | |
1692 | /* First locate the ccb for this command */ | |
1693 | for (i = 0; i < AHA1542_MAILBOXES; i++) | |
1694 | if (HOSTDATA(SCpnt->host)->SCint[i] == SCpnt) { | |
1695 | HOSTDATA(SCpnt->host)->ccb[i].op = 0x81; /* BUS DEVICE RESET */ | |
1696 | /* Now tell the 1542 to flush all pending commands for this target */ | |
1697 | aha1542_out(SCpnt->host->io_port, &ahacmd, 1); | |
1698 | ||
1699 | /* Here is the tricky part. What to do next. Do we get an interrupt | |
1700 | for the commands that we aborted with the specified target, or | |
1701 | do we generate this on our own? Try it without first and see | |
1702 | what happens */ | |
1703 | printk(KERN_WARNING "Sent BUS DEVICE RESET to target %d\n", SCpnt->target); | |
1704 | ||
1705 | /* If the first does not work, then try the second. I think the | |
1706 | first option is more likely to be correct. Free the command | |
1707 | block for all commands running on this target... */ | |
1708 | for (i = 0; i < AHA1542_MAILBOXES; i++) | |
1709 | if (HOSTDATA(SCpnt->host)->SCint[i] && | |
1710 | HOSTDATA(SCpnt->host)->SCint[i]->target == SCpnt->target) { | |
1711 | Scsi_Cmnd *SCtmp; | |
1712 | SCtmp = HOSTDATA(SCpnt->host)->SCint[i]; | |
1713 | SCtmp->result = DID_RESET << 16; | |
c9475cb0 JJ |
1714 | kfree(SCtmp->host_scribble); |
1715 | SCtmp->host_scribble = NULL; | |
1da177e4 LT |
1716 | printk(KERN_WARNING "Sending DID_RESET for target %d\n", SCpnt->target); |
1717 | SCtmp->scsi_done(SCpnt); | |
1718 | ||
1719 | HOSTDATA(SCpnt->host)->SCint[i] = NULL; | |
1720 | HOSTDATA(SCpnt->host)->mb[i].status = 0; | |
1721 | } | |
1722 | return SCSI_RESET_SUCCESS; | |
1723 | } | |
1724 | } | |
1725 | /* No active command at this time, so this means that each time we got | |
1726 | some kind of response the last time through. Tell the mid-level code | |
1727 | to request sense information in order to decide what to do next. */ | |
1728 | return SCSI_RESET_PUNT; | |
1729 | } | |
1730 | #endif /* end of big comment block around old_abort + old_reset */ | |
1731 | ||
1732 | static int aha1542_biosparam(struct scsi_device *sdev, | |
1733 | struct block_device *bdev, sector_t capacity, int *ip) | |
1734 | { | |
1735 | int translation_algorithm; | |
1736 | int size = capacity; | |
1737 | ||
1738 | translation_algorithm = HOSTDATA(sdev->host)->bios_translation; | |
1739 | ||
1740 | if ((size >> 11) > 1024 && translation_algorithm == BIOS_TRANSLATION_25563) { | |
1741 | /* Please verify that this is the same as what DOS returns */ | |
1742 | ip[0] = 255; | |
1743 | ip[1] = 63; | |
1744 | ip[2] = size / 255 / 63; | |
1745 | } else { | |
1746 | ip[0] = 64; | |
1747 | ip[1] = 32; | |
1748 | ip[2] = size >> 11; | |
1749 | } | |
1750 | ||
1751 | return 0; | |
1752 | } | |
1753 | MODULE_LICENSE("GPL"); | |
1754 | ||
1755 | ||
d0be4a7d | 1756 | static struct scsi_host_template driver_template = { |
1da177e4 LT |
1757 | .proc_name = "aha1542", |
1758 | .name = "Adaptec 1542", | |
1759 | .detect = aha1542_detect, | |
1760 | .release = aha1542_release, | |
1761 | .queuecommand = aha1542_queuecommand, | |
1da177e4 LT |
1762 | .eh_device_reset_handler= aha1542_dev_reset, |
1763 | .eh_bus_reset_handler = aha1542_bus_reset, | |
1764 | .eh_host_reset_handler = aha1542_host_reset, | |
1765 | .bios_param = aha1542_biosparam, | |
1766 | .can_queue = AHA1542_MAILBOXES, | |
1767 | .this_id = 7, | |
1768 | .sg_tablesize = AHA1542_SCATTER, | |
1769 | .cmd_per_lun = AHA1542_CMDLUN, | |
1770 | .unchecked_isa_dma = 1, | |
1771 | .use_clustering = ENABLE_CLUSTERING, | |
1772 | }; | |
1773 | #include "scsi_module.c" |