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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); | |
23e6940a OZ |
188 | if (!wait_mask(INTRFLAGS(base), INTRMASK, HACC, 0, 0)) |
189 | return 1; | |
0c2b6481 | 190 | |
1da177e4 | 191 | return 0; |
1da177e4 LT |
192 | } |
193 | ||
194 | /* Only used at boot time, so we do not need to worry about latency as much | |
195 | here */ | |
196 | ||
f8846be3 | 197 | static int aha1542_in(unsigned int base, u8 *cmdp, int len, int timeout) |
1da177e4 LT |
198 | { |
199 | unsigned long flags; | |
200 | ||
201 | spin_lock_irqsave(&aha1542_lock, flags); | |
202 | while (len--) { | |
a13b3722 OZ |
203 | if (!wait_mask(STATUS(base), DF, DF, 0, timeout)) { |
204 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
205 | if (timeout == 0) | |
206 | printk(KERN_ERR "aha1542_in failed(%d): ", len + 1); | |
207 | return 1; | |
208 | } | |
1da177e4 LT |
209 | *cmdp++ = inb(DATA(base)); |
210 | } | |
211 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
212 | return 0; | |
1da177e4 LT |
213 | } |
214 | ||
215 | static int makecode(unsigned hosterr, unsigned scsierr) | |
216 | { | |
217 | switch (hosterr) { | |
218 | case 0x0: | |
219 | case 0xa: /* Linked command complete without error and linked normally */ | |
220 | case 0xb: /* Linked command complete without error, interrupt generated */ | |
221 | hosterr = 0; | |
222 | break; | |
223 | ||
224 | case 0x11: /* Selection time out-The initiator selection or target | |
225 | reselection was not complete within the SCSI Time out period */ | |
226 | hosterr = DID_TIME_OUT; | |
227 | break; | |
228 | ||
229 | case 0x12: /* Data overrun/underrun-The target attempted to transfer more data | |
230 | than was allocated by the Data Length field or the sum of the | |
231 | Scatter / Gather Data Length fields. */ | |
232 | ||
233 | case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */ | |
234 | ||
235 | case 0x15: /* MBO command was not 00, 01 or 02-The first byte of the CB was | |
236 | invalid. This usually indicates a software failure. */ | |
237 | ||
238 | case 0x16: /* Invalid CCB Operation Code-The first byte of the CCB was invalid. | |
239 | This usually indicates a software failure. */ | |
240 | ||
241 | case 0x17: /* Linked CCB does not have the same LUN-A subsequent CCB of a set | |
242 | of linked CCB's does not specify the same logical unit number as | |
243 | the first. */ | |
244 | case 0x18: /* Invalid Target Direction received from Host-The direction of a | |
245 | Target Mode CCB was invalid. */ | |
246 | ||
247 | case 0x19: /* Duplicate CCB Received in Target Mode-More than once CCB was | |
248 | received to service data transfer between the same target LUN | |
249 | and initiator SCSI ID in the same direction. */ | |
250 | ||
251 | case 0x1a: /* Invalid CCB or Segment List Parameter-A segment list with a zero | |
252 | length segment or invalid segment list boundaries was received. | |
253 | A CCB parameter was invalid. */ | |
254 | DEB(printk("Aha1542: %x %x\n", hosterr, scsierr)); | |
255 | hosterr = DID_ERROR; /* Couldn't find any better */ | |
256 | break; | |
257 | ||
258 | case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus | |
259 | phase sequence was requested by the target. The host adapter | |
260 | will generate a SCSI Reset Condition, notifying the host with | |
261 | a SCRD interrupt */ | |
262 | hosterr = DID_RESET; | |
263 | break; | |
264 | default: | |
265 | printk(KERN_ERR "aha1542: makecode: unknown hoststatus %x\n", hosterr); | |
266 | break; | |
267 | } | |
268 | return scsierr | (hosterr << 16); | |
269 | } | |
270 | ||
643a7c43 | 271 | static int aha1542_test_port(int bse, struct Scsi_Host *shpnt) |
1da177e4 | 272 | { |
cb5b570c OZ |
273 | u8 inquiry_result[4]; |
274 | u8 *cmdp; | |
1da177e4 | 275 | int len; |
1da177e4 LT |
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 | ||
1da177e4 LT |
283 | /* In case some other card was probing here, reset interrupts */ |
284 | aha1542_intr_reset(bse); /* reset interrupts, so they don't block */ | |
285 | ||
286 | outb(SRST | IRST /*|SCRST */ , CONTROL(bse)); | |
287 | ||
288 | mdelay(20); /* Wait a little bit for things to settle down. */ | |
289 | ||
1da177e4 | 290 | /* Expect INIT and IDLE, any of the others are bad */ |
2093bfa1 | 291 | if (!wait_mask(STATUS(bse), STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0)) |
a13b3722 | 292 | return 0; |
1da177e4 | 293 | |
1da177e4 LT |
294 | /* Shouldn't have generated any interrupts during reset */ |
295 | if (inb(INTRFLAGS(bse)) & INTRMASK) | |
a13b3722 | 296 | return 0; |
1da177e4 | 297 | |
1da177e4 LT |
298 | /* Perform a host adapter inquiry instead so we do not need to set |
299 | up the mailboxes ahead of time */ | |
300 | ||
0c2b6481 | 301 | aha1542_outb(bse, CMD_INQUIRY); |
1da177e4 | 302 | |
1da177e4 LT |
303 | len = 4; |
304 | cmdp = &inquiry_result[0]; | |
305 | ||
306 | while (len--) { | |
2093bfa1 | 307 | if (!wait_mask(STATUS(bse), DF, DF, 0, 0)) |
a13b3722 | 308 | return 0; |
1da177e4 LT |
309 | *cmdp++ = inb(DATA(bse)); |
310 | } | |
311 | ||
1da177e4 LT |
312 | /* Reading port should reset DF */ |
313 | if (inb(STATUS(bse)) & DF) | |
a13b3722 | 314 | return 0; |
1da177e4 | 315 | |
1da177e4 | 316 | /* When HACC, command is completed, and we're though testing */ |
2093bfa1 | 317 | if (!wait_mask(INTRFLAGS(bse), HACC, HACC, 0, 0)) |
a13b3722 | 318 | return 0; |
1da177e4 | 319 | |
1da177e4 LT |
320 | /* Clear interrupts */ |
321 | outb(IRST, CONTROL(bse)); | |
322 | ||
bdebe224 | 323 | return 1; |
1da177e4 LT |
324 | } |
325 | ||
1da177e4 | 326 | /* A "high" level interrupt handler */ |
87c4d7bc | 327 | static void aha1542_intr_handle(struct Scsi_Host *shost) |
1da177e4 | 328 | { |
e98878f7 | 329 | struct aha1542_hostdata *aha1542 = shost_priv(shost); |
1da177e4 LT |
330 | void (*my_done) (Scsi_Cmnd *) = NULL; |
331 | int errstatus, mbi, mbo, mbistatus; | |
332 | int number_serviced; | |
333 | unsigned long flags; | |
334 | Scsi_Cmnd *SCtmp; | |
335 | int flag; | |
e98878f7 OZ |
336 | struct mailbox *mb = aha1542->mb; |
337 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 LT |
338 | |
339 | #ifdef DEBUG | |
340 | { | |
341 | flag = inb(INTRFLAGS(shost->io_port)); | |
342 | printk(KERN_DEBUG "aha1542_intr_handle: "); | |
343 | if (!(flag & ANYINTR)) | |
344 | printk("no interrupt?"); | |
345 | if (flag & MBIF) | |
346 | printk("MBIF "); | |
347 | if (flag & MBOA) | |
348 | printk("MBOF "); | |
349 | if (flag & HACC) | |
350 | printk("HACC "); | |
351 | if (flag & SCRD) | |
352 | printk("SCRD "); | |
353 | printk("status %02x\n", inb(STATUS(shost->io_port))); | |
354 | }; | |
355 | #endif | |
356 | number_serviced = 0; | |
1da177e4 LT |
357 | |
358 | while (1 == 1) { | |
359 | flag = inb(INTRFLAGS(shost->io_port)); | |
360 | ||
361 | /* Check for unusual interrupts. If any of these happen, we should | |
362 | probably do something special, but for now just printing a message | |
363 | is sufficient. A SCSI reset detected is something that we really | |
364 | need to deal with in some way. */ | |
365 | if (flag & ~MBIF) { | |
366 | if (flag & MBOA) | |
367 | printk("MBOF "); | |
368 | if (flag & HACC) | |
369 | printk("HACC "); | |
dfd7c991 | 370 | if (flag & SCRD) |
1da177e4 | 371 | printk("SCRD "); |
1da177e4 LT |
372 | } |
373 | aha1542_intr_reset(shost->io_port); | |
374 | ||
375 | spin_lock_irqsave(&aha1542_lock, flags); | |
e98878f7 | 376 | mbi = aha1542->aha1542_last_mbi_used + 1; |
1da177e4 LT |
377 | if (mbi >= 2 * AHA1542_MAILBOXES) |
378 | mbi = AHA1542_MAILBOXES; | |
379 | ||
380 | do { | |
381 | if (mb[mbi].status != 0) | |
382 | break; | |
383 | mbi++; | |
384 | if (mbi >= 2 * AHA1542_MAILBOXES) | |
385 | mbi = AHA1542_MAILBOXES; | |
e98878f7 | 386 | } while (mbi != aha1542->aha1542_last_mbi_used); |
1da177e4 LT |
387 | |
388 | if (mb[mbi].status == 0) { | |
389 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
390 | /* Hmm, no mail. Must have read it the last time around */ | |
dfd7c991 | 391 | if (!number_serviced) |
1da177e4 | 392 | printk(KERN_WARNING "aha1542.c: interrupt received, but no mail.\n"); |
1da177e4 LT |
393 | return; |
394 | }; | |
395 | ||
10be6250 | 396 | mbo = (scsi2int(mb[mbi].ccbptr) - (isa_virt_to_bus(&ccb[0]))) / sizeof(struct ccb); |
1da177e4 LT |
397 | mbistatus = mb[mbi].status; |
398 | mb[mbi].status = 0; | |
e98878f7 | 399 | aha1542->aha1542_last_mbi_used = mbi; |
1da177e4 LT |
400 | spin_unlock_irqrestore(&aha1542_lock, flags); |
401 | ||
402 | #ifdef DEBUG | |
403 | { | |
404 | if (ccb[mbo].tarstat | ccb[mbo].hastat) | |
405 | printk(KERN_DEBUG "aha1542_command: returning %x (status %d)\n", | |
406 | ccb[mbo].tarstat + ((int) ccb[mbo].hastat << 16), mb[mbi].status); | |
407 | }; | |
408 | #endif | |
409 | ||
410 | if (mbistatus == 3) | |
411 | continue; /* Aborted command not found */ | |
412 | ||
413 | #ifdef DEBUG | |
414 | printk(KERN_DEBUG "...done %d %d\n", mbo, mbi); | |
415 | #endif | |
416 | ||
e98878f7 | 417 | SCtmp = aha1542->SCint[mbo]; |
1da177e4 LT |
418 | |
419 | if (!SCtmp || !SCtmp->scsi_done) { | |
420 | printk(KERN_WARNING "aha1542_intr_handle: Unexpected interrupt\n"); | |
421 | printk(KERN_WARNING "tarstat=%x, hastat=%x idlun=%x ccb#=%d \n", ccb[mbo].tarstat, | |
422 | ccb[mbo].hastat, ccb[mbo].idlun, mbo); | |
423 | return; | |
424 | } | |
425 | my_done = SCtmp->scsi_done; | |
c9475cb0 JJ |
426 | kfree(SCtmp->host_scribble); |
427 | SCtmp->host_scribble = NULL; | |
1da177e4 LT |
428 | /* Fetch the sense data, and tuck it away, in the required slot. The |
429 | Adaptec automatically fetches it, and there is no guarantee that | |
430 | we will still have it in the cdb when we come back */ | |
431 | if (ccb[mbo].tarstat == 2) | |
432 | memcpy(SCtmp->sense_buffer, &ccb[mbo].cdb[ccb[mbo].cdblen], | |
b80ca4f7 | 433 | SCSI_SENSE_BUFFERSIZE); |
1da177e4 LT |
434 | |
435 | ||
436 | /* is there mail :-) */ | |
437 | ||
438 | /* more error checking left out here */ | |
439 | if (mbistatus != 1) | |
440 | /* This is surely wrong, but I don't know what's right */ | |
441 | errstatus = makecode(ccb[mbo].hastat, ccb[mbo].tarstat); | |
442 | else | |
443 | errstatus = 0; | |
444 | ||
445 | #ifdef DEBUG | |
446 | if (errstatus) | |
447 | printk(KERN_DEBUG "(aha1542 error:%x %x %x) ", errstatus, | |
448 | ccb[mbo].hastat, ccb[mbo].tarstat); | |
449 | #endif | |
450 | ||
451 | if (ccb[mbo].tarstat == 2) { | |
452 | #ifdef DEBUG | |
453 | int i; | |
454 | #endif | |
455 | DEB(printk("aha1542_intr_handle: sense:")); | |
456 | #ifdef DEBUG | |
457 | for (i = 0; i < 12; i++) | |
458 | printk("%02x ", ccb[mbo].cdb[ccb[mbo].cdblen + i]); | |
459 | printk("\n"); | |
460 | #endif | |
461 | /* | |
462 | DEB(printk("aha1542_intr_handle: buf:")); | |
463 | for (i = 0; i < bufflen; i++) | |
464 | printk("%02x ", ((unchar *)buff)[i]); | |
465 | printk("\n"); | |
466 | */ | |
467 | } | |
468 | DEB(if (errstatus) printk("aha1542_intr_handle: returning %6x\n", errstatus)); | |
469 | SCtmp->result = errstatus; | |
e98878f7 OZ |
470 | aha1542->SCint[mbo] = NULL; /* This effectively frees up the mailbox slot, as |
471 | far as queuecommand is concerned */ | |
1da177e4 LT |
472 | my_done(SCtmp); |
473 | number_serviced++; | |
474 | }; | |
475 | } | |
476 | ||
09a44833 OZ |
477 | /* A quick wrapper for do_aha1542_intr_handle to grab the spin lock */ |
478 | static irqreturn_t do_aha1542_intr_handle(int dummy, void *dev_id) | |
479 | { | |
480 | unsigned long flags; | |
481 | struct Scsi_Host *shost = dev_id; | |
482 | ||
483 | spin_lock_irqsave(shost->host_lock, flags); | |
484 | aha1542_intr_handle(shost); | |
485 | spin_unlock_irqrestore(shost->host_lock, flags); | |
486 | return IRQ_HANDLED; | |
487 | } | |
488 | ||
f281233d | 489 | static int aha1542_queuecommand_lck(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *)) |
1da177e4 | 490 | { |
e98878f7 | 491 | struct aha1542_hostdata *aha1542 = shost_priv(SCpnt->device->host); |
cb5b570c OZ |
492 | u8 direction; |
493 | u8 *cmd = (u8 *) SCpnt->cmnd; | |
494 | u8 target = SCpnt->device->id; | |
495 | u8 lun = SCpnt->device->lun; | |
1da177e4 | 496 | unsigned long flags; |
fc3fdfcc | 497 | int bufflen = scsi_bufflen(SCpnt); |
1da177e4 | 498 | int mbo; |
e98878f7 OZ |
499 | struct mailbox *mb = aha1542->mb; |
500 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 LT |
501 | |
502 | DEB(int i); | |
503 | ||
1da177e4 LT |
504 | DEB(if (target > 1) { |
505 | SCpnt->result = DID_TIME_OUT << 16; | |
506 | done(SCpnt); return 0; | |
507 | } | |
508 | ); | |
509 | ||
510 | if (*cmd == REQUEST_SENSE) { | |
511 | /* Don't do the command - we have the sense data already */ | |
1da177e4 LT |
512 | SCpnt->result = 0; |
513 | done(SCpnt); | |
514 | return 0; | |
515 | } | |
516 | #ifdef DEBUG | |
517 | if (*cmd == READ_10 || *cmd == WRITE_10) | |
518 | i = xscsi2int(cmd + 2); | |
519 | else if (*cmd == READ_6 || *cmd == WRITE_6) | |
520 | i = scsi2int(cmd + 2); | |
521 | else | |
522 | i = -1; | |
523 | if (done) | |
524 | printk(KERN_DEBUG "aha1542_queuecommand: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen); | |
525 | else | |
526 | printk(KERN_DEBUG "aha1542_command: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen); | |
1da177e4 LT |
527 | printk(KERN_DEBUG "aha1542_queuecommand: dumping scsi cmd:"); |
528 | for (i = 0; i < SCpnt->cmd_len; i++) | |
529 | printk("%02x ", cmd[i]); | |
530 | printk("\n"); | |
531 | if (*cmd == WRITE_10 || *cmd == WRITE_6) | |
532 | return 0; /* we are still testing, so *don't* write */ | |
533 | #endif | |
534 | /* Use the outgoing mailboxes in a round-robin fashion, because this | |
535 | is how the host adapter will scan for them */ | |
536 | ||
537 | spin_lock_irqsave(&aha1542_lock, flags); | |
e98878f7 | 538 | mbo = aha1542->aha1542_last_mbo_used + 1; |
1da177e4 LT |
539 | if (mbo >= AHA1542_MAILBOXES) |
540 | mbo = 0; | |
541 | ||
542 | do { | |
e98878f7 | 543 | if (mb[mbo].status == 0 && aha1542->SCint[mbo] == NULL) |
1da177e4 LT |
544 | break; |
545 | mbo++; | |
546 | if (mbo >= AHA1542_MAILBOXES) | |
547 | mbo = 0; | |
e98878f7 | 548 | } while (mbo != aha1542->aha1542_last_mbo_used); |
1da177e4 | 549 | |
e98878f7 | 550 | if (mb[mbo].status || aha1542->SCint[mbo]) |
1da177e4 LT |
551 | panic("Unable to find empty mailbox for aha1542.\n"); |
552 | ||
e98878f7 OZ |
553 | aha1542->SCint[mbo] = SCpnt; /* This will effectively prevent someone else from |
554 | screwing with this cdb. */ | |
1da177e4 | 555 | |
e98878f7 | 556 | aha1542->aha1542_last_mbo_used = mbo; |
1da177e4 LT |
557 | spin_unlock_irqrestore(&aha1542_lock, flags); |
558 | ||
559 | #ifdef DEBUG | |
560 | printk(KERN_DEBUG "Sending command (%d %x)...", mbo, done); | |
561 | #endif | |
562 | ||
10be6250 | 563 | any2scsi(mb[mbo].ccbptr, isa_virt_to_bus(&ccb[mbo])); /* This gets trashed for some reason */ |
1da177e4 LT |
564 | |
565 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
566 | ||
567 | ccb[mbo].cdblen = SCpnt->cmd_len; | |
568 | ||
569 | direction = 0; | |
570 | if (*cmd == READ_10 || *cmd == READ_6) | |
571 | direction = 8; | |
572 | else if (*cmd == WRITE_10 || *cmd == WRITE_6) | |
573 | direction = 16; | |
574 | ||
575 | memcpy(ccb[mbo].cdb, cmd, ccb[mbo].cdblen); | |
576 | ||
fc3fdfcc | 577 | if (bufflen) { |
51cf2249 | 578 | struct scatterlist *sg; |
1da177e4 LT |
579 | struct chain *cptr; |
580 | #ifdef DEBUG | |
581 | unsigned char *ptr; | |
582 | #endif | |
fc3fdfcc | 583 | int i, sg_count = scsi_sg_count(SCpnt); |
1da177e4 | 584 | ccb[mbo].op = 2; /* SCSI Initiator Command w/scatter-gather */ |
fc3fdfcc BH |
585 | SCpnt->host_scribble = kmalloc(sizeof(*cptr)*sg_count, |
586 | GFP_KERNEL | GFP_DMA); | |
1da177e4 LT |
587 | cptr = (struct chain *) SCpnt->host_scribble; |
588 | if (cptr == NULL) { | |
589 | /* free the claimed mailbox slot */ | |
e98878f7 | 590 | aha1542->SCint[mbo] = NULL; |
1da177e4 LT |
591 | return SCSI_MLQUEUE_HOST_BUSY; |
592 | } | |
fc3fdfcc | 593 | scsi_for_each_sg(SCpnt, sg, sg_count, i) { |
10be6250 OZ |
594 | any2scsi(cptr[i].dataptr, isa_page_to_bus(sg_page(sg)) |
595 | + sg->offset); | |
51cf2249 | 596 | any2scsi(cptr[i].datalen, sg->length); |
1da177e4 | 597 | }; |
fc3fdfcc | 598 | any2scsi(ccb[mbo].datalen, sg_count * sizeof(struct chain)); |
10be6250 | 599 | any2scsi(ccb[mbo].dataptr, isa_virt_to_bus(cptr)); |
1da177e4 LT |
600 | #ifdef DEBUG |
601 | printk("cptr %x: ", cptr); | |
602 | ptr = (unsigned char *) cptr; | |
603 | for (i = 0; i < 18; i++) | |
604 | printk("%02x ", ptr[i]); | |
605 | #endif | |
606 | } else { | |
607 | ccb[mbo].op = 0; /* SCSI Initiator Command */ | |
608 | SCpnt->host_scribble = NULL; | |
fc3fdfcc BH |
609 | any2scsi(ccb[mbo].datalen, 0); |
610 | any2scsi(ccb[mbo].dataptr, 0); | |
1da177e4 LT |
611 | }; |
612 | ccb[mbo].idlun = (target & 7) << 5 | direction | (lun & 7); /*SCSI Target Id */ | |
613 | ccb[mbo].rsalen = 16; | |
614 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
615 | ccb[mbo].commlinkid = 0; | |
616 | ||
617 | #ifdef DEBUG | |
618 | { | |
619 | int i; | |
620 | printk(KERN_DEBUG "aha1542_command: sending.. "); | |
621 | for (i = 0; i < sizeof(ccb[mbo]) - 10; i++) | |
cb5b570c | 622 | printk("%02x ", ((u8 *) &ccb[mbo])[i]); |
1da177e4 LT |
623 | }; |
624 | #endif | |
625 | ||
626 | if (done) { | |
f232d538 | 627 | DEB(printk("aha1542_queuecommand: now waiting for interrupt ")); |
1da177e4 LT |
628 | SCpnt->scsi_done = done; |
629 | mb[mbo].status = 1; | |
0c2b6481 | 630 | aha1542_outb(SCpnt->device->host->io_port, CMD_START_SCSI); |
1da177e4 LT |
631 | } else |
632 | printk("aha1542_queuecommand: done can't be NULL\n"); | |
633 | ||
634 | return 0; | |
635 | } | |
636 | ||
f281233d JG |
637 | static DEF_SCSI_QCMD(aha1542_queuecommand) |
638 | ||
1da177e4 LT |
639 | /* Initialize mailboxes */ |
640 | static void setup_mailboxes(int bse, struct Scsi_Host *shpnt) | |
641 | { | |
e98878f7 | 642 | struct aha1542_hostdata *aha1542 = shost_priv(shpnt); |
1da177e4 | 643 | int i; |
e98878f7 OZ |
644 | struct mailbox *mb = aha1542->mb; |
645 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 | 646 | |
cb5b570c | 647 | u8 cmd[5] = { CMD_MBINIT, AHA1542_MAILBOXES, 0, 0, 0}; |
1da177e4 | 648 | |
1da177e4 LT |
649 | for (i = 0; i < AHA1542_MAILBOXES; i++) { |
650 | mb[i].status = mb[AHA1542_MAILBOXES + i].status = 0; | |
10be6250 | 651 | any2scsi(mb[i].ccbptr, isa_virt_to_bus(&ccb[i])); |
1da177e4 LT |
652 | }; |
653 | aha1542_intr_reset(bse); /* reset interrupts, so they don't block */ | |
10be6250 | 654 | any2scsi((cmd + 2), isa_virt_to_bus(mb)); |
23e6940a | 655 | if (aha1542_out(bse, cmd, 5)) |
1da177e4 | 656 | printk(KERN_ERR "aha1542_detect: failed setting up mailboxes\n"); |
1da177e4 LT |
657 | aha1542_intr_reset(bse); |
658 | } | |
659 | ||
643a7c43 | 660 | static int aha1542_getconfig(int base_io, unsigned char *irq_level, unsigned char *dma_chan, unsigned char *scsi_id) |
1da177e4 | 661 | { |
cb5b570c | 662 | u8 inquiry_result[3]; |
1da177e4 LT |
663 | int i; |
664 | i = inb(STATUS(base_io)); | |
665 | if (i & DF) { | |
666 | i = inb(DATA(base_io)); | |
667 | }; | |
0c2b6481 | 668 | aha1542_outb(base_io, CMD_RETCONF); |
f8846be3 | 669 | aha1542_in(base_io, inquiry_result, 3, 0); |
2093bfa1 | 670 | if (!wait_mask(INTRFLAGS(base_io), INTRMASK, HACC, 0, 0)) |
1da177e4 | 671 | printk(KERN_ERR "aha1542_detect: query board settings\n"); |
1da177e4 LT |
672 | aha1542_intr_reset(base_io); |
673 | switch (inquiry_result[0]) { | |
674 | case 0x80: | |
675 | *dma_chan = 7; | |
676 | break; | |
677 | case 0x40: | |
678 | *dma_chan = 6; | |
679 | break; | |
680 | case 0x20: | |
681 | *dma_chan = 5; | |
682 | break; | |
683 | case 0x01: | |
684 | *dma_chan = 0; | |
685 | break; | |
686 | case 0: | |
687 | /* This means that the adapter, although Adaptec 1542 compatible, doesn't use a DMA channel. | |
688 | Currently only aware of the BusLogic BT-445S VL-Bus adapter which needs this. */ | |
689 | *dma_chan = 0xFF; | |
690 | break; | |
691 | default: | |
692 | printk(KERN_ERR "Unable to determine Adaptec DMA priority. Disabling board\n"); | |
693 | return -1; | |
694 | }; | |
695 | switch (inquiry_result[1]) { | |
696 | case 0x40: | |
697 | *irq_level = 15; | |
698 | break; | |
699 | case 0x20: | |
700 | *irq_level = 14; | |
701 | break; | |
702 | case 0x8: | |
703 | *irq_level = 12; | |
704 | break; | |
705 | case 0x4: | |
706 | *irq_level = 11; | |
707 | break; | |
708 | case 0x2: | |
709 | *irq_level = 10; | |
710 | break; | |
711 | case 0x1: | |
712 | *irq_level = 9; | |
713 | break; | |
714 | default: | |
715 | printk(KERN_ERR "Unable to determine Adaptec IRQ level. Disabling board\n"); | |
716 | return -1; | |
717 | }; | |
718 | *scsi_id = inquiry_result[2] & 7; | |
719 | return 0; | |
720 | } | |
721 | ||
722 | /* This function should only be called for 1542C boards - we can detect | |
723 | the special firmware settings and unlock the board */ | |
724 | ||
643a7c43 | 725 | static int aha1542_mbenable(int base) |
1da177e4 | 726 | { |
cb5b570c OZ |
727 | static u8 mbenable_cmd[3]; |
728 | static u8 mbenable_result[2]; | |
1da177e4 LT |
729 | int retval; |
730 | ||
731 | retval = BIOS_TRANSLATION_6432; | |
732 | ||
0c2b6481 | 733 | aha1542_outb(base, CMD_EXTBIOS); |
f8846be3 | 734 | if (aha1542_in(base, mbenable_result, 2, 100)) |
1da177e4 | 735 | return retval; |
2093bfa1 OZ |
736 | if (!wait_mask(INTRFLAGS(base), INTRMASK, HACC, 0, 100)) |
737 | goto fail; | |
1da177e4 LT |
738 | aha1542_intr_reset(base); |
739 | ||
740 | if ((mbenable_result[0] & 0x08) || mbenable_result[1]) { | |
741 | mbenable_cmd[0] = CMD_MBENABLE; | |
742 | mbenable_cmd[1] = 0; | |
743 | mbenable_cmd[2] = mbenable_result[1]; | |
744 | ||
745 | if ((mbenable_result[0] & 0x08) && (mbenable_result[1] & 0x03)) | |
746 | retval = BIOS_TRANSLATION_25563; | |
747 | ||
23e6940a | 748 | if (aha1542_out(base, mbenable_cmd, 3)) |
2093bfa1 | 749 | goto fail; |
1da177e4 LT |
750 | }; |
751 | while (0) { | |
752 | fail: | |
753 | printk(KERN_ERR "aha1542_mbenable: Mailbox init failed\n"); | |
754 | } | |
755 | aha1542_intr_reset(base); | |
756 | return retval; | |
757 | } | |
758 | ||
759 | /* Query the board to find out if it is a 1542 or a 1740, or whatever. */ | |
643a7c43 | 760 | static int aha1542_query(int base_io, int *transl) |
1da177e4 | 761 | { |
cb5b570c | 762 | u8 inquiry_result[4]; |
1da177e4 LT |
763 | int i; |
764 | i = inb(STATUS(base_io)); | |
765 | if (i & DF) { | |
766 | i = inb(DATA(base_io)); | |
767 | }; | |
0c2b6481 | 768 | aha1542_outb(base_io, CMD_INQUIRY); |
f8846be3 | 769 | aha1542_in(base_io, inquiry_result, 4, 0); |
2093bfa1 | 770 | if (!wait_mask(INTRFLAGS(base_io), INTRMASK, HACC, 0, 0)) |
1da177e4 | 771 | printk(KERN_ERR "aha1542_detect: query card type\n"); |
1da177e4 LT |
772 | aha1542_intr_reset(base_io); |
773 | ||
774 | *transl = BIOS_TRANSLATION_6432; /* Default case */ | |
775 | ||
776 | /* For an AHA1740 series board, we ignore the board since there is a | |
777 | hardware bug which can lead to wrong blocks being returned if the board | |
778 | is operating in the 1542 emulation mode. Since there is an extended mode | |
779 | driver, we simply ignore the board and let the 1740 driver pick it up. | |
780 | */ | |
781 | ||
782 | if (inquiry_result[0] == 0x43) { | |
783 | printk(KERN_INFO "aha1542.c: Emulation mode not supported for AHA 174N hardware.\n"); | |
784 | return 1; | |
785 | }; | |
786 | ||
787 | /* Always call this - boards that do not support extended bios translation | |
788 | will ignore the command, and we will set the proper default */ | |
789 | ||
790 | *transl = aha1542_mbenable(base_io); | |
791 | ||
792 | return 0; | |
793 | } | |
794 | ||
795 | #ifndef MODULE | |
796 | static char *setup_str[MAXBOARDS] __initdata; | |
797 | static int setup_idx = 0; | |
798 | ||
799 | static void __init aha1542_setup(char *str, int *ints) | |
800 | { | |
801 | const char *ahausage = "aha1542: usage: aha1542=<PORTBASE>[,<BUSON>,<BUSOFF>[,<DMASPEED>]]\n"; | |
802 | int setup_portbase; | |
803 | ||
804 | if (setup_idx >= MAXBOARDS) { | |
805 | printk(KERN_ERR "aha1542: aha1542_setup called too many times! Bad LILO params ?\n"); | |
806 | printk(KERN_ERR " Entryline 1: %s\n", setup_str[0]); | |
807 | printk(KERN_ERR " Entryline 2: %s\n", setup_str[1]); | |
808 | printk(KERN_ERR " This line: %s\n", str); | |
809 | return; | |
810 | } | |
811 | if (ints[0] < 1 || ints[0] > 4) { | |
812 | printk(KERN_ERR "aha1542: %s\n", str); | |
813 | printk(ahausage); | |
814 | printk(KERN_ERR "aha1542: Wrong parameters may cause system malfunction.. We try anyway..\n"); | |
815 | } | |
816 | setup_called[setup_idx] = ints[0]; | |
817 | setup_str[setup_idx] = str; | |
818 | ||
819 | setup_portbase = ints[0] >= 1 ? ints[1] : 0; /* Preserve the default value.. */ | |
820 | setup_buson[setup_idx] = ints[0] >= 2 ? ints[2] : 7; | |
821 | setup_busoff[setup_idx] = ints[0] >= 3 ? ints[3] : 5; | |
822 | if (ints[0] >= 4) | |
823 | { | |
824 | int atbt = -1; | |
825 | switch (ints[4]) { | |
826 | case 5: | |
827 | atbt = 0x00; | |
828 | break; | |
829 | case 6: | |
830 | atbt = 0x04; | |
831 | break; | |
832 | case 7: | |
833 | atbt = 0x01; | |
834 | break; | |
835 | case 8: | |
836 | atbt = 0x02; | |
837 | break; | |
838 | case 10: | |
839 | atbt = 0x03; | |
840 | break; | |
841 | default: | |
842 | printk(KERN_ERR "aha1542: %s\n", str); | |
843 | printk(ahausage); | |
844 | printk(KERN_ERR "aha1542: Valid values for DMASPEED are 5-8, 10 MB/s. Using jumper defaults.\n"); | |
845 | break; | |
846 | } | |
847 | setup_dmaspeed[setup_idx] = atbt; | |
848 | } | |
849 | if (setup_portbase != 0) | |
850 | bases[setup_idx] = setup_portbase; | |
851 | ||
852 | ++setup_idx; | |
853 | } | |
854 | ||
855 | static int __init do_setup(char *str) | |
856 | { | |
857 | int ints[5]; | |
858 | ||
859 | int count=setup_idx; | |
860 | ||
6391a113 | 861 | get_options(str, ARRAY_SIZE(ints), ints); |
1da177e4 LT |
862 | aha1542_setup(str,ints); |
863 | ||
864 | return count<setup_idx; | |
865 | } | |
866 | ||
867 | __setup("aha1542=",do_setup); | |
868 | #endif | |
869 | ||
b847fd0d OZ |
870 | /* Set the Bus on/off-times as not to ruin floppy performance */ |
871 | static void aha1542_set_bus_times(int indx) | |
872 | { | |
873 | unsigned int base_io = bases[indx]; | |
874 | u8 oncmd[] = {CMD_BUSON_TIME, 7}; | |
875 | u8 offcmd[] = {CMD_BUSOFF_TIME, 5}; | |
876 | ||
877 | if (setup_called[indx]) { | |
878 | oncmd[1] = setup_buson[indx]; | |
879 | offcmd[1] = setup_busoff[indx]; | |
880 | } | |
881 | aha1542_intr_reset(base_io); | |
23e6940a | 882 | if (aha1542_out(base_io, oncmd, 2)) |
b847fd0d OZ |
883 | goto fail; |
884 | aha1542_intr_reset(base_io); | |
23e6940a | 885 | if (aha1542_out(base_io, offcmd, 2)) |
b847fd0d OZ |
886 | goto fail; |
887 | if (setup_dmaspeed[indx] >= 0) { | |
888 | u8 dmacmd[] = {CMD_DMASPEED, 0}; | |
889 | dmacmd[1] = setup_dmaspeed[indx]; | |
890 | aha1542_intr_reset(base_io); | |
23e6940a | 891 | if (aha1542_out(base_io, dmacmd, 2)) |
b847fd0d OZ |
892 | goto fail; |
893 | } | |
894 | aha1542_intr_reset(base_io); | |
895 | return; | |
896 | fail: | |
897 | printk(KERN_ERR "setting bus on/off-time failed\n"); | |
898 | aha1542_intr_reset(base_io); | |
899 | } | |
900 | ||
1da177e4 | 901 | /* return non-zero on detection */ |
643a7c43 | 902 | static struct Scsi_Host *aha1542_hw_init(struct scsi_host_template *tpnt, struct device *pdev, int indx) |
1da177e4 LT |
903 | { |
904 | unsigned char dma_chan; | |
905 | unsigned char irq_level; | |
906 | unsigned char scsi_id; | |
907 | unsigned long flags; | |
908 | unsigned int base_io; | |
909 | int trans; | |
910 | struct Scsi_Host *shpnt = NULL; | |
e98878f7 | 911 | struct aha1542_hostdata *aha1542; |
1da177e4 LT |
912 | |
913 | DEB(printk("aha1542_detect: \n")); | |
914 | ||
915 | tpnt->proc_name = "aha1542"; | |
916 | ||
1da177e4 | 917 | if (bases[indx] != 0 && request_region(bases[indx], 4, "aha1542")) { |
643a7c43 | 918 | shpnt = scsi_host_alloc(tpnt, |
1da177e4 LT |
919 | sizeof(struct aha1542_hostdata)); |
920 | ||
921 | if(shpnt==NULL) { | |
922 | release_region(bases[indx], 4); | |
643a7c43 | 923 | return NULL; |
1da177e4 | 924 | } |
e98878f7 | 925 | aha1542 = shost_priv(shpnt); |
1da177e4 LT |
926 | if (!aha1542_test_port(bases[indx], shpnt)) |
927 | goto unregister; | |
928 | ||
1da177e4 LT |
929 | base_io = bases[indx]; |
930 | ||
b847fd0d OZ |
931 | aha1542_set_bus_times(indx); |
932 | ||
1da177e4 LT |
933 | if (aha1542_query(base_io, &trans)) |
934 | goto unregister; | |
935 | ||
936 | if (aha1542_getconfig(base_io, &irq_level, &dma_chan, &scsi_id) == -1) | |
937 | goto unregister; | |
938 | ||
939 | printk(KERN_INFO "Configuring Adaptec (SCSI-ID %d) at IO:%x, IRQ %d", scsi_id, base_io, irq_level); | |
940 | if (dma_chan != 0xFF) | |
941 | printk(", DMA priority %d", dma_chan); | |
942 | printk("\n"); | |
943 | ||
1da177e4 LT |
944 | setup_mailboxes(base_io, shpnt); |
945 | ||
1da177e4 LT |
946 | DEB(printk("aha1542_detect: enable interrupt channel %d\n", irq_level)); |
947 | spin_lock_irqsave(&aha1542_lock, flags); | |
87c4d7bc JG |
948 | if (request_irq(irq_level, do_aha1542_intr_handle, 0, |
949 | "aha1542", shpnt)) { | |
1da177e4 LT |
950 | printk(KERN_ERR "Unable to allocate IRQ for adaptec controller.\n"); |
951 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
952 | goto unregister; | |
953 | } | |
954 | if (dma_chan != 0xFF) { | |
955 | if (request_dma(dma_chan, "aha1542")) { | |
956 | printk(KERN_ERR "Unable to allocate DMA channel for Adaptec.\n"); | |
87c4d7bc | 957 | free_irq(irq_level, shpnt); |
1da177e4 LT |
958 | spin_unlock_irqrestore(&aha1542_lock, flags); |
959 | goto unregister; | |
960 | } | |
961 | if (dma_chan == 0 || dma_chan >= 5) { | |
962 | set_dma_mode(dma_chan, DMA_MODE_CASCADE); | |
963 | enable_dma(dma_chan); | |
964 | } | |
965 | } | |
87c4d7bc | 966 | |
1da177e4 LT |
967 | shpnt->this_id = scsi_id; |
968 | shpnt->unique_id = base_io; | |
969 | shpnt->io_port = base_io; | |
970 | shpnt->n_io_port = 4; /* Number of bytes of I/O space used */ | |
971 | shpnt->dma_channel = dma_chan; | |
972 | shpnt->irq = irq_level; | |
e98878f7 | 973 | aha1542->bios_translation = trans; |
1da177e4 LT |
974 | if (trans == BIOS_TRANSLATION_25563) |
975 | printk(KERN_INFO "aha1542.c: Using extended bios translation\n"); | |
e98878f7 OZ |
976 | aha1542->aha1542_last_mbi_used = (2 * AHA1542_MAILBOXES - 1); |
977 | aha1542->aha1542_last_mbo_used = (AHA1542_MAILBOXES - 1); | |
978 | memset(aha1542->SCint, 0, sizeof(aha1542->SCint)); | |
1da177e4 | 979 | spin_unlock_irqrestore(&aha1542_lock, flags); |
1da177e4 | 980 | |
643a7c43 OZ |
981 | if (scsi_add_host(shpnt, pdev)) { |
982 | if (shpnt->dma_channel != 0xff) | |
983 | free_dma(shpnt->dma_channel); | |
984 | free_irq(irq_level, shpnt); | |
985 | goto unregister; | |
1da177e4 LT |
986 | } |
987 | ||
643a7c43 | 988 | scsi_scan_host(shpnt); |
1da177e4 | 989 | |
643a7c43 | 990 | return shpnt; |
1da177e4 LT |
991 | unregister: |
992 | release_region(bases[indx], 4); | |
643a7c43 OZ |
993 | scsi_host_put(shpnt); |
994 | return NULL; | |
1da177e4 LT |
995 | |
996 | }; | |
997 | ||
643a7c43 | 998 | return NULL; |
1da177e4 LT |
999 | } |
1000 | ||
1001 | static int aha1542_release(struct Scsi_Host *shost) | |
1002 | { | |
643a7c43 | 1003 | scsi_remove_host(shost); |
1da177e4 | 1004 | if (shost->irq) |
87c4d7bc | 1005 | free_irq(shost->irq, shost); |
1da177e4 LT |
1006 | if (shost->dma_channel != 0xff) |
1007 | free_dma(shost->dma_channel); | |
1008 | if (shost->io_port && shost->n_io_port) | |
1009 | release_region(shost->io_port, shost->n_io_port); | |
643a7c43 | 1010 | scsi_host_put(shost); |
1da177e4 LT |
1011 | return 0; |
1012 | } | |
1013 | ||
1da177e4 | 1014 | |
1da177e4 LT |
1015 | /* |
1016 | * This is a device reset. This is handled by sending a special command | |
1017 | * to the device. | |
1018 | */ | |
1019 | static int aha1542_dev_reset(Scsi_Cmnd * SCpnt) | |
1020 | { | |
e98878f7 | 1021 | struct aha1542_hostdata *aha1542 = shost_priv(SCpnt->device->host); |
1da177e4 | 1022 | unsigned long flags; |
e98878f7 | 1023 | struct mailbox *mb = aha1542->mb; |
cb5b570c OZ |
1024 | u8 target = SCpnt->device->id; |
1025 | u8 lun = SCpnt->device->lun; | |
1da177e4 | 1026 | int mbo; |
e98878f7 | 1027 | struct ccb *ccb = aha1542->ccb; |
1da177e4 | 1028 | |
1da177e4 | 1029 | spin_lock_irqsave(&aha1542_lock, flags); |
e98878f7 | 1030 | mbo = aha1542->aha1542_last_mbo_used + 1; |
1da177e4 LT |
1031 | if (mbo >= AHA1542_MAILBOXES) |
1032 | mbo = 0; | |
1033 | ||
1034 | do { | |
e98878f7 | 1035 | if (mb[mbo].status == 0 && aha1542->SCint[mbo] == NULL) |
1da177e4 LT |
1036 | break; |
1037 | mbo++; | |
1038 | if (mbo >= AHA1542_MAILBOXES) | |
1039 | mbo = 0; | |
e98878f7 | 1040 | } while (mbo != aha1542->aha1542_last_mbo_used); |
1da177e4 | 1041 | |
e98878f7 | 1042 | if (mb[mbo].status || aha1542->SCint[mbo]) |
1da177e4 LT |
1043 | panic("Unable to find empty mailbox for aha1542.\n"); |
1044 | ||
e98878f7 OZ |
1045 | aha1542->SCint[mbo] = SCpnt; /* This will effectively |
1046 | prevent someone else from | |
1047 | screwing with this cdb. */ | |
1da177e4 | 1048 | |
e98878f7 | 1049 | aha1542->aha1542_last_mbo_used = mbo; |
1da177e4 LT |
1050 | spin_unlock_irqrestore(&aha1542_lock, flags); |
1051 | ||
10be6250 | 1052 | any2scsi(mb[mbo].ccbptr, isa_virt_to_bus(&ccb[mbo])); /* This gets trashed for some reason */ |
1da177e4 LT |
1053 | |
1054 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
1055 | ||
1056 | ccb[mbo].op = 0x81; /* BUS DEVICE RESET */ | |
1057 | ||
1058 | ccb[mbo].idlun = (target & 7) << 5 | (lun & 7); /*SCSI Target Id */ | |
1059 | ||
1060 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
1061 | ccb[mbo].commlinkid = 0; | |
1062 | ||
1063 | /* | |
1064 | * Now tell the 1542 to flush all pending commands for this | |
1065 | * target | |
1066 | */ | |
0c2b6481 | 1067 | aha1542_outb(SCpnt->device->host->io_port, CMD_START_SCSI); |
1da177e4 | 1068 | |
017560fc JG |
1069 | scmd_printk(KERN_WARNING, SCpnt, |
1070 | "Trying device reset for target\n"); | |
1da177e4 LT |
1071 | |
1072 | return SUCCESS; | |
1da177e4 LT |
1073 | } |
1074 | ||
8537cba8 | 1075 | static int aha1542_reset(Scsi_Cmnd *SCpnt, u8 reset_cmd) |
1da177e4 | 1076 | { |
e98878f7 | 1077 | struct aha1542_hostdata *aha1542 = shost_priv(SCpnt->device->host); |
1da177e4 LT |
1078 | int i; |
1079 | ||
1080 | /* | |
1081 | * This does a scsi reset for all devices on the bus. | |
1082 | * In principle, we could also reset the 1542 - should | |
1083 | * we do this? Try this first, and we can add that later | |
1084 | * if it turns out to be useful. | |
1085 | */ | |
8537cba8 | 1086 | outb(reset_cmd, CONTROL(SCpnt->device->host->io_port)); |
1da177e4 LT |
1087 | |
1088 | /* | |
1089 | * Wait for the thing to settle down a bit. Unfortunately | |
1090 | * this is going to basically lock up the machine while we | |
1091 | * wait for this to complete. To be 100% correct, we need to | |
1092 | * check for timeout, and if we are doing something like this | |
1093 | * we are pretty desperate anyways. | |
1094 | */ | |
1da177e4 LT |
1095 | ssleep(4); |
1096 | spin_lock_irq(SCpnt->device->host->host_lock); | |
1097 | ||
2093bfa1 | 1098 | if (!wait_mask(STATUS(SCpnt->device->host->io_port), |
a13b3722 OZ |
1099 | STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0)) { |
1100 | spin_unlock_irq(SCpnt->device->host->host_lock); | |
1101 | return FAILED; | |
1102 | } | |
8537cba8 OZ |
1103 | /* |
1104 | * We need to do this too before the 1542 can interact with | |
1105 | * us again after host reset. | |
1106 | */ | |
1107 | if (reset_cmd & HRST) | |
1108 | setup_mailboxes(SCpnt->device->host->io_port, SCpnt->device->host); | |
1da177e4 LT |
1109 | /* |
1110 | * Now try to pick up the pieces. For all pending commands, | |
1111 | * free any internal data structures, and basically clear things | |
1112 | * out. We do not try and restart any commands or anything - | |
1113 | * the strategy handler takes care of that crap. | |
1114 | */ | |
1115 | printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->device->host->host_no); | |
1116 | ||
1117 | for (i = 0; i < AHA1542_MAILBOXES; i++) { | |
e98878f7 | 1118 | if (aha1542->SCint[i] != NULL) { |
1da177e4 | 1119 | Scsi_Cmnd *SCtmp; |
e98878f7 | 1120 | SCtmp = aha1542->SCint[i]; |
1da177e4 | 1121 | |
1da177e4 LT |
1122 | if (SCtmp->device->soft_reset) { |
1123 | /* | |
1124 | * If this device implements the soft reset option, | |
1125 | * then it is still holding onto the command, and | |
1126 | * may yet complete it. In this case, we don't | |
1127 | * flush the data. | |
1128 | */ | |
1129 | continue; | |
1130 | } | |
c9475cb0 JJ |
1131 | kfree(SCtmp->host_scribble); |
1132 | SCtmp->host_scribble = NULL; | |
e98878f7 OZ |
1133 | aha1542->SCint[i] = NULL; |
1134 | aha1542->mb[i].status = 0; | |
1da177e4 LT |
1135 | } |
1136 | } | |
1137 | ||
68b3aa7c | 1138 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1da177e4 | 1139 | return SUCCESS; |
1da177e4 LT |
1140 | } |
1141 | ||
8537cba8 | 1142 | static int aha1542_bus_reset(Scsi_Cmnd *SCpnt) |
1da177e4 | 1143 | { |
8537cba8 OZ |
1144 | return aha1542_reset(SCpnt, SCRST); |
1145 | } | |
1da177e4 | 1146 | |
8537cba8 OZ |
1147 | static int aha1542_host_reset(Scsi_Cmnd *SCpnt) |
1148 | { | |
1149 | return aha1542_reset(SCpnt, HRST | SCRST); | |
1da177e4 LT |
1150 | } |
1151 | ||
1da177e4 LT |
1152 | static int aha1542_biosparam(struct scsi_device *sdev, |
1153 | struct block_device *bdev, sector_t capacity, int *ip) | |
1154 | { | |
e98878f7 | 1155 | struct aha1542_hostdata *aha1542 = shost_priv(sdev->host); |
1da177e4 LT |
1156 | int translation_algorithm; |
1157 | int size = capacity; | |
1158 | ||
e98878f7 | 1159 | translation_algorithm = aha1542->bios_translation; |
1da177e4 LT |
1160 | |
1161 | if ((size >> 11) > 1024 && translation_algorithm == BIOS_TRANSLATION_25563) { | |
1162 | /* Please verify that this is the same as what DOS returns */ | |
1163 | ip[0] = 255; | |
1164 | ip[1] = 63; | |
1165 | ip[2] = size / 255 / 63; | |
1166 | } else { | |
1167 | ip[0] = 64; | |
1168 | ip[1] = 32; | |
1169 | ip[2] = size >> 11; | |
1170 | } | |
1171 | ||
1172 | return 0; | |
1173 | } | |
1174 | MODULE_LICENSE("GPL"); | |
1175 | ||
d0be4a7d | 1176 | static struct scsi_host_template driver_template = { |
643a7c43 | 1177 | .module = THIS_MODULE, |
1da177e4 LT |
1178 | .proc_name = "aha1542", |
1179 | .name = "Adaptec 1542", | |
1da177e4 | 1180 | .queuecommand = aha1542_queuecommand, |
1da177e4 LT |
1181 | .eh_device_reset_handler= aha1542_dev_reset, |
1182 | .eh_bus_reset_handler = aha1542_bus_reset, | |
1183 | .eh_host_reset_handler = aha1542_host_reset, | |
1184 | .bios_param = aha1542_biosparam, | |
1185 | .can_queue = AHA1542_MAILBOXES, | |
1186 | .this_id = 7, | |
10be6250 OZ |
1187 | .sg_tablesize = 16, |
1188 | .cmd_per_lun = 1, | |
1da177e4 LT |
1189 | .unchecked_isa_dma = 1, |
1190 | .use_clustering = ENABLE_CLUSTERING, | |
1191 | }; | |
643a7c43 OZ |
1192 | |
1193 | static int aha1542_isa_match(struct device *pdev, unsigned int ndev) | |
1194 | { | |
1195 | struct Scsi_Host *sh = aha1542_hw_init(&driver_template, pdev, ndev); | |
1196 | ||
1197 | if (!sh) | |
1198 | return 0; | |
1199 | ||
1200 | dev_set_drvdata(pdev, sh); | |
1201 | return 1; | |
1202 | } | |
1203 | ||
1204 | static int aha1542_isa_remove(struct device *pdev, | |
1205 | unsigned int ndev) | |
1206 | { | |
1207 | aha1542_release(dev_get_drvdata(pdev)); | |
1208 | dev_set_drvdata(pdev, NULL); | |
1209 | return 0; | |
1210 | } | |
1211 | ||
1212 | static struct isa_driver aha1542_isa_driver = { | |
1213 | .match = aha1542_isa_match, | |
1214 | .remove = aha1542_isa_remove, | |
1215 | .driver = { | |
1216 | .name = "aha1542" | |
1217 | }, | |
1218 | }; | |
1219 | static int isa_registered; | |
1220 | ||
1221 | #ifdef CONFIG_PNP | |
1222 | static struct pnp_device_id aha1542_pnp_ids[] = { | |
1223 | { .id = "ADP1542" }, | |
1224 | { .id = "" } | |
1225 | }; | |
1226 | MODULE_DEVICE_TABLE(pnp, aha1542_pnp_ids); | |
1227 | ||
1228 | static int aha1542_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *id) | |
1229 | { | |
1230 | int indx; | |
1231 | struct Scsi_Host *sh; | |
1232 | ||
1233 | for (indx = 0; indx < ARRAY_SIZE(bases); indx++) { | |
1234 | if (bases[indx]) | |
1235 | continue; | |
1236 | ||
1237 | if (pnp_activate_dev(pdev) < 0) | |
1238 | continue; | |
1239 | ||
1240 | bases[indx] = pnp_port_start(pdev, 0); | |
1241 | ||
1242 | /* The card can be queried for its DMA, we have | |
1243 | the DMA set up that is enough */ | |
1244 | ||
1245 | printk(KERN_INFO "ISAPnP found an AHA1535 at I/O 0x%03X\n", bases[indx]); | |
1246 | } | |
1247 | ||
1248 | sh = aha1542_hw_init(&driver_template, &pdev->dev, indx); | |
1249 | if (!sh) | |
1250 | return -ENODEV; | |
1251 | ||
1252 | pnp_set_drvdata(pdev, sh); | |
1253 | return 0; | |
1254 | } | |
1255 | ||
1256 | static void aha1542_pnp_remove(struct pnp_dev *pdev) | |
1257 | { | |
1258 | aha1542_release(pnp_get_drvdata(pdev)); | |
1259 | pnp_set_drvdata(pdev, NULL); | |
1260 | } | |
1261 | ||
1262 | static struct pnp_driver aha1542_pnp_driver = { | |
1263 | .name = "aha1542", | |
1264 | .id_table = aha1542_pnp_ids, | |
1265 | .probe = aha1542_pnp_probe, | |
1266 | .remove = aha1542_pnp_remove, | |
1267 | }; | |
1268 | static int pnp_registered; | |
1269 | #endif /* CONFIG_PNP */ | |
1270 | ||
1271 | static int __init aha1542_init(void) | |
1272 | { | |
1273 | int ret = 0; | |
1274 | #ifdef MODULE | |
1275 | int atbt = -1; | |
1276 | ||
1277 | bases[0] = aha1542[0]; | |
1278 | setup_buson[0] = aha1542[1]; | |
1279 | setup_busoff[0] = aha1542[2]; | |
1280 | ||
1281 | switch (aha1542[3]) { | |
1282 | case 5: | |
1283 | atbt = 0x00; | |
1284 | break; | |
1285 | case 6: | |
1286 | atbt = 0x04; | |
1287 | break; | |
1288 | case 7: | |
1289 | atbt = 0x01; | |
1290 | break; | |
1291 | case 8: | |
1292 | atbt = 0x02; | |
1293 | break; | |
1294 | case 10: | |
1295 | atbt = 0x03; | |
1296 | break; | |
1297 | }; | |
1298 | setup_dmaspeed[0] = atbt; | |
1299 | #endif | |
1300 | ||
1301 | #ifdef CONFIG_PNP | |
1302 | if (isapnp) { | |
1303 | ret = pnp_register_driver(&aha1542_pnp_driver); | |
1304 | if (!ret) | |
1305 | pnp_registered = 1; | |
1306 | } | |
1307 | #endif | |
1308 | ret = isa_register_driver(&aha1542_isa_driver, MAXBOARDS); | |
1309 | if (!ret) | |
1310 | isa_registered = 1; | |
1311 | ||
1312 | #ifdef CONFIG_PNP | |
1313 | if (pnp_registered) | |
1314 | ret = 0; | |
1315 | #endif | |
1316 | if (isa_registered) | |
1317 | ret = 0; | |
1318 | ||
1319 | return ret; | |
1320 | } | |
1321 | ||
1322 | static void __exit aha1542_exit(void) | |
1323 | { | |
1324 | #ifdef CONFIG_PNP | |
1325 | if (pnp_registered) | |
1326 | pnp_unregister_driver(&aha1542_pnp_driver); | |
1327 | #endif | |
1328 | if (isa_registered) | |
1329 | isa_unregister_driver(&aha1542_isa_driver); | |
1330 | } | |
1331 | ||
1332 | module_init(aha1542_init); | |
1333 | module_exit(aha1542_exit); |