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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 | |
f71429ab | 56 | #define MAXBOARDS 4 |
1da177e4 | 57 | |
f71429ab OZ |
58 | static bool isapnp = 1; |
59 | module_param(isapnp, bool, 0); | |
60 | MODULE_PARM_DESC(isapnp, "enable PnP support (default=1)"); | |
1da177e4 | 61 | |
f71429ab OZ |
62 | static int io[MAXBOARDS] = { 0x330, 0x334, 0, 0 }; |
63 | module_param_array(io, int, NULL, 0); | |
64 | MODULE_PARM_DESC(io, "base IO address of controller (0x130,0x134,0x230,0x234,0x330,0x334, default=0x330,0x334)"); | |
1da177e4 | 65 | |
f71429ab OZ |
66 | /* time AHA spends on the AT-bus during data transfer */ |
67 | static int bus_on[MAXBOARDS] = { -1, -1, -1, -1 }; /* power-on default: 11us */ | |
68 | module_param_array(bus_on, int, NULL, 0); | |
69 | MODULE_PARM_DESC(bus_on, "bus on time [us] (2-15, default=-1 [HW default: 11])"); | |
1da177e4 | 70 | |
f71429ab OZ |
71 | /* time AHA spends off the bus (not to monopolize it) during data transfer */ |
72 | static int bus_off[MAXBOARDS] = { -1, -1, -1, -1 }; /* power-on default: 4us */ | |
73 | module_param_array(bus_off, int, NULL, 0); | |
74 | MODULE_PARM_DESC(bus_off, "bus off time [us] (1-64, default=-1 [HW default: 4])"); | |
1da177e4 | 75 | |
f71429ab OZ |
76 | /* default is jumper selected (J1 on 1542A), factory default = 5 MB/s */ |
77 | static int dma_speed[MAXBOARDS] = { -1, -1, -1, -1 }; | |
78 | module_param_array(dma_speed, int, NULL, 0); | |
79 | MODULE_PARM_DESC(dma_speed, "DMA speed [MB/s] (5,6,7,8,10, default=-1 [by jumper])"); | |
1da177e4 | 80 | |
1da177e4 LT |
81 | #define BIOS_TRANSLATION_6432 1 /* Default case these days */ |
82 | #define BIOS_TRANSLATION_25563 2 /* Big disk case */ | |
83 | ||
84 | struct aha1542_hostdata { | |
85 | /* This will effectively start both of them at the first mailbox */ | |
86 | int bios_translation; /* Mapping bios uses - for compatibility */ | |
87 | int aha1542_last_mbi_used; | |
88 | int aha1542_last_mbo_used; | |
89 | Scsi_Cmnd *SCint[AHA1542_MAILBOXES]; | |
90 | struct mailbox mb[2 * AHA1542_MAILBOXES]; | |
91 | struct ccb ccb[AHA1542_MAILBOXES]; | |
92 | }; | |
93 | ||
1da177e4 LT |
94 | static DEFINE_SPINLOCK(aha1542_lock); |
95 | ||
f1bbef63 OZ |
96 | static inline void aha1542_intr_reset(u16 base) |
97 | { | |
98 | outb(IRST, CONTROL(base)); | |
99 | } | |
1da177e4 | 100 | |
2093bfa1 OZ |
101 | static inline bool wait_mask(u16 port, u8 mask, u8 allof, u8 noneof, int timeout) |
102 | { | |
103 | bool delayed = true; | |
104 | ||
105 | if (timeout == 0) { | |
106 | timeout = 3000000; | |
107 | delayed = false; | |
108 | } | |
109 | ||
110 | while (1) { | |
111 | u8 bits = inb(port) & mask; | |
112 | if ((bits & allof) == allof && ((bits & noneof) == 0)) | |
113 | break; | |
114 | if (delayed) | |
115 | mdelay(1); | |
116 | if (--timeout == 0) | |
117 | return false; | |
118 | } | |
119 | ||
120 | return true; | |
121 | } | |
1da177e4 | 122 | |
1da177e4 LT |
123 | /* This is a bit complicated, but we need to make sure that an interrupt |
124 | routine does not send something out while we are in the middle of this. | |
125 | Fortunately, it is only at boot time that multi-byte messages | |
126 | are ever sent. */ | |
0c2b6481 | 127 | static int aha1542_outb(unsigned int base, u8 cmd) |
1da177e4 | 128 | { |
0c2b6481 OZ |
129 | unsigned long flags; |
130 | ||
131 | while (1) { | |
132 | if (!wait_mask(STATUS(base), CDF, 0, CDF, 0)) { | |
133 | printk(KERN_ERR "aha1542_outb failed"); | |
134 | return 1; | |
1da177e4 | 135 | } |
1da177e4 | 136 | spin_lock_irqsave(&aha1542_lock, flags); |
0c2b6481 OZ |
137 | if (inb(STATUS(base)) & CDF) { |
138 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
139 | continue; | |
1da177e4 | 140 | } |
0c2b6481 | 141 | outb(cmd, DATA(base)); |
1da177e4 | 142 | spin_unlock_irqrestore(&aha1542_lock, flags); |
0c2b6481 | 143 | return 0; |
1da177e4 | 144 | } |
0c2b6481 OZ |
145 | } |
146 | ||
147 | static int aha1542_out(unsigned int base, u8 *cmdp, int len) | |
148 | { | |
149 | unsigned long flags; | |
150 | ||
151 | spin_lock_irqsave(&aha1542_lock, flags); | |
152 | while (len--) { | |
153 | if (!wait_mask(STATUS(base), CDF, 0, CDF, 0)) { | |
154 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
155 | printk(KERN_ERR "aha1542_out failed(%d): ", len + 1); | |
156 | return 1; | |
157 | } | |
158 | outb(*cmdp++, DATA(base)); | |
159 | } | |
160 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
23e6940a OZ |
161 | if (!wait_mask(INTRFLAGS(base), INTRMASK, HACC, 0, 0)) |
162 | return 1; | |
0c2b6481 | 163 | |
1da177e4 | 164 | return 0; |
1da177e4 LT |
165 | } |
166 | ||
167 | /* Only used at boot time, so we do not need to worry about latency as much | |
168 | here */ | |
169 | ||
f8846be3 | 170 | static int aha1542_in(unsigned int base, u8 *cmdp, int len, int timeout) |
1da177e4 LT |
171 | { |
172 | unsigned long flags; | |
173 | ||
174 | spin_lock_irqsave(&aha1542_lock, flags); | |
175 | while (len--) { | |
a13b3722 OZ |
176 | if (!wait_mask(STATUS(base), DF, DF, 0, timeout)) { |
177 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
178 | if (timeout == 0) | |
179 | printk(KERN_ERR "aha1542_in failed(%d): ", len + 1); | |
180 | return 1; | |
181 | } | |
1da177e4 LT |
182 | *cmdp++ = inb(DATA(base)); |
183 | } | |
184 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
185 | return 0; | |
1da177e4 LT |
186 | } |
187 | ||
188 | static int makecode(unsigned hosterr, unsigned scsierr) | |
189 | { | |
190 | switch (hosterr) { | |
191 | case 0x0: | |
192 | case 0xa: /* Linked command complete without error and linked normally */ | |
193 | case 0xb: /* Linked command complete without error, interrupt generated */ | |
194 | hosterr = 0; | |
195 | break; | |
196 | ||
197 | case 0x11: /* Selection time out-The initiator selection or target | |
198 | reselection was not complete within the SCSI Time out period */ | |
199 | hosterr = DID_TIME_OUT; | |
200 | break; | |
201 | ||
202 | case 0x12: /* Data overrun/underrun-The target attempted to transfer more data | |
203 | than was allocated by the Data Length field or the sum of the | |
204 | Scatter / Gather Data Length fields. */ | |
205 | ||
206 | case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */ | |
207 | ||
208 | case 0x15: /* MBO command was not 00, 01 or 02-The first byte of the CB was | |
209 | invalid. This usually indicates a software failure. */ | |
210 | ||
211 | case 0x16: /* Invalid CCB Operation Code-The first byte of the CCB was invalid. | |
212 | This usually indicates a software failure. */ | |
213 | ||
214 | case 0x17: /* Linked CCB does not have the same LUN-A subsequent CCB of a set | |
215 | of linked CCB's does not specify the same logical unit number as | |
216 | the first. */ | |
217 | case 0x18: /* Invalid Target Direction received from Host-The direction of a | |
218 | Target Mode CCB was invalid. */ | |
219 | ||
220 | case 0x19: /* Duplicate CCB Received in Target Mode-More than once CCB was | |
221 | received to service data transfer between the same target LUN | |
222 | and initiator SCSI ID in the same direction. */ | |
223 | ||
224 | case 0x1a: /* Invalid CCB or Segment List Parameter-A segment list with a zero | |
225 | length segment or invalid segment list boundaries was received. | |
226 | A CCB parameter was invalid. */ | |
227 | DEB(printk("Aha1542: %x %x\n", hosterr, scsierr)); | |
228 | hosterr = DID_ERROR; /* Couldn't find any better */ | |
229 | break; | |
230 | ||
231 | case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus | |
232 | phase sequence was requested by the target. The host adapter | |
233 | will generate a SCSI Reset Condition, notifying the host with | |
234 | a SCRD interrupt */ | |
235 | hosterr = DID_RESET; | |
236 | break; | |
237 | default: | |
238 | printk(KERN_ERR "aha1542: makecode: unknown hoststatus %x\n", hosterr); | |
239 | break; | |
240 | } | |
241 | return scsierr | (hosterr << 16); | |
242 | } | |
243 | ||
643a7c43 | 244 | static int aha1542_test_port(int bse, struct Scsi_Host *shpnt) |
1da177e4 | 245 | { |
cb5b570c OZ |
246 | u8 inquiry_result[4]; |
247 | u8 *cmdp; | |
1da177e4 | 248 | int len; |
1da177e4 LT |
249 | |
250 | /* Quick and dirty test for presence of the card. */ | |
251 | if (inb(STATUS(bse)) == 0xff) | |
252 | return 0; | |
253 | ||
254 | /* Reset the adapter. I ought to make a hard reset, but it's not really necessary */ | |
255 | ||
1da177e4 LT |
256 | /* In case some other card was probing here, reset interrupts */ |
257 | aha1542_intr_reset(bse); /* reset interrupts, so they don't block */ | |
258 | ||
259 | outb(SRST | IRST /*|SCRST */ , CONTROL(bse)); | |
260 | ||
261 | mdelay(20); /* Wait a little bit for things to settle down. */ | |
262 | ||
1da177e4 | 263 | /* Expect INIT and IDLE, any of the others are bad */ |
2093bfa1 | 264 | if (!wait_mask(STATUS(bse), STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0)) |
a13b3722 | 265 | return 0; |
1da177e4 | 266 | |
1da177e4 LT |
267 | /* Shouldn't have generated any interrupts during reset */ |
268 | if (inb(INTRFLAGS(bse)) & INTRMASK) | |
a13b3722 | 269 | return 0; |
1da177e4 | 270 | |
1da177e4 LT |
271 | /* Perform a host adapter inquiry instead so we do not need to set |
272 | up the mailboxes ahead of time */ | |
273 | ||
0c2b6481 | 274 | aha1542_outb(bse, CMD_INQUIRY); |
1da177e4 | 275 | |
1da177e4 LT |
276 | len = 4; |
277 | cmdp = &inquiry_result[0]; | |
278 | ||
279 | while (len--) { | |
2093bfa1 | 280 | if (!wait_mask(STATUS(bse), DF, DF, 0, 0)) |
a13b3722 | 281 | return 0; |
1da177e4 LT |
282 | *cmdp++ = inb(DATA(bse)); |
283 | } | |
284 | ||
1da177e4 LT |
285 | /* Reading port should reset DF */ |
286 | if (inb(STATUS(bse)) & DF) | |
a13b3722 | 287 | return 0; |
1da177e4 | 288 | |
1da177e4 | 289 | /* When HACC, command is completed, and we're though testing */ |
2093bfa1 | 290 | if (!wait_mask(INTRFLAGS(bse), HACC, HACC, 0, 0)) |
a13b3722 | 291 | return 0; |
1da177e4 | 292 | |
1da177e4 LT |
293 | /* Clear interrupts */ |
294 | outb(IRST, CONTROL(bse)); | |
295 | ||
bdebe224 | 296 | return 1; |
1da177e4 LT |
297 | } |
298 | ||
1da177e4 | 299 | /* A "high" level interrupt handler */ |
87c4d7bc | 300 | static void aha1542_intr_handle(struct Scsi_Host *shost) |
1da177e4 | 301 | { |
e98878f7 | 302 | struct aha1542_hostdata *aha1542 = shost_priv(shost); |
1da177e4 LT |
303 | void (*my_done) (Scsi_Cmnd *) = NULL; |
304 | int errstatus, mbi, mbo, mbistatus; | |
305 | int number_serviced; | |
306 | unsigned long flags; | |
307 | Scsi_Cmnd *SCtmp; | |
308 | int flag; | |
e98878f7 OZ |
309 | struct mailbox *mb = aha1542->mb; |
310 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 LT |
311 | |
312 | #ifdef DEBUG | |
313 | { | |
314 | flag = inb(INTRFLAGS(shost->io_port)); | |
315 | printk(KERN_DEBUG "aha1542_intr_handle: "); | |
316 | if (!(flag & ANYINTR)) | |
317 | printk("no interrupt?"); | |
318 | if (flag & MBIF) | |
319 | printk("MBIF "); | |
320 | if (flag & MBOA) | |
321 | printk("MBOF "); | |
322 | if (flag & HACC) | |
323 | printk("HACC "); | |
324 | if (flag & SCRD) | |
325 | printk("SCRD "); | |
326 | printk("status %02x\n", inb(STATUS(shost->io_port))); | |
327 | }; | |
328 | #endif | |
329 | number_serviced = 0; | |
1da177e4 LT |
330 | |
331 | while (1 == 1) { | |
332 | flag = inb(INTRFLAGS(shost->io_port)); | |
333 | ||
334 | /* Check for unusual interrupts. If any of these happen, we should | |
335 | probably do something special, but for now just printing a message | |
336 | is sufficient. A SCSI reset detected is something that we really | |
337 | need to deal with in some way. */ | |
338 | if (flag & ~MBIF) { | |
339 | if (flag & MBOA) | |
340 | printk("MBOF "); | |
341 | if (flag & HACC) | |
342 | printk("HACC "); | |
dfd7c991 | 343 | if (flag & SCRD) |
1da177e4 | 344 | printk("SCRD "); |
1da177e4 LT |
345 | } |
346 | aha1542_intr_reset(shost->io_port); | |
347 | ||
348 | spin_lock_irqsave(&aha1542_lock, flags); | |
e98878f7 | 349 | mbi = aha1542->aha1542_last_mbi_used + 1; |
1da177e4 LT |
350 | if (mbi >= 2 * AHA1542_MAILBOXES) |
351 | mbi = AHA1542_MAILBOXES; | |
352 | ||
353 | do { | |
354 | if (mb[mbi].status != 0) | |
355 | break; | |
356 | mbi++; | |
357 | if (mbi >= 2 * AHA1542_MAILBOXES) | |
358 | mbi = AHA1542_MAILBOXES; | |
e98878f7 | 359 | } while (mbi != aha1542->aha1542_last_mbi_used); |
1da177e4 LT |
360 | |
361 | if (mb[mbi].status == 0) { | |
362 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
363 | /* Hmm, no mail. Must have read it the last time around */ | |
dfd7c991 | 364 | if (!number_serviced) |
1da177e4 | 365 | printk(KERN_WARNING "aha1542.c: interrupt received, but no mail.\n"); |
1da177e4 LT |
366 | return; |
367 | }; | |
368 | ||
10be6250 | 369 | mbo = (scsi2int(mb[mbi].ccbptr) - (isa_virt_to_bus(&ccb[0]))) / sizeof(struct ccb); |
1da177e4 LT |
370 | mbistatus = mb[mbi].status; |
371 | mb[mbi].status = 0; | |
e98878f7 | 372 | aha1542->aha1542_last_mbi_used = mbi; |
1da177e4 LT |
373 | spin_unlock_irqrestore(&aha1542_lock, flags); |
374 | ||
375 | #ifdef DEBUG | |
376 | { | |
377 | if (ccb[mbo].tarstat | ccb[mbo].hastat) | |
378 | printk(KERN_DEBUG "aha1542_command: returning %x (status %d)\n", | |
379 | ccb[mbo].tarstat + ((int) ccb[mbo].hastat << 16), mb[mbi].status); | |
380 | }; | |
381 | #endif | |
382 | ||
383 | if (mbistatus == 3) | |
384 | continue; /* Aborted command not found */ | |
385 | ||
386 | #ifdef DEBUG | |
387 | printk(KERN_DEBUG "...done %d %d\n", mbo, mbi); | |
388 | #endif | |
389 | ||
e98878f7 | 390 | SCtmp = aha1542->SCint[mbo]; |
1da177e4 LT |
391 | |
392 | if (!SCtmp || !SCtmp->scsi_done) { | |
393 | printk(KERN_WARNING "aha1542_intr_handle: Unexpected interrupt\n"); | |
394 | printk(KERN_WARNING "tarstat=%x, hastat=%x idlun=%x ccb#=%d \n", ccb[mbo].tarstat, | |
395 | ccb[mbo].hastat, ccb[mbo].idlun, mbo); | |
396 | return; | |
397 | } | |
398 | my_done = SCtmp->scsi_done; | |
c9475cb0 JJ |
399 | kfree(SCtmp->host_scribble); |
400 | SCtmp->host_scribble = NULL; | |
1da177e4 LT |
401 | /* Fetch the sense data, and tuck it away, in the required slot. The |
402 | Adaptec automatically fetches it, and there is no guarantee that | |
403 | we will still have it in the cdb when we come back */ | |
404 | if (ccb[mbo].tarstat == 2) | |
405 | memcpy(SCtmp->sense_buffer, &ccb[mbo].cdb[ccb[mbo].cdblen], | |
b80ca4f7 | 406 | SCSI_SENSE_BUFFERSIZE); |
1da177e4 LT |
407 | |
408 | ||
409 | /* is there mail :-) */ | |
410 | ||
411 | /* more error checking left out here */ | |
412 | if (mbistatus != 1) | |
413 | /* This is surely wrong, but I don't know what's right */ | |
414 | errstatus = makecode(ccb[mbo].hastat, ccb[mbo].tarstat); | |
415 | else | |
416 | errstatus = 0; | |
417 | ||
418 | #ifdef DEBUG | |
419 | if (errstatus) | |
420 | printk(KERN_DEBUG "(aha1542 error:%x %x %x) ", errstatus, | |
421 | ccb[mbo].hastat, ccb[mbo].tarstat); | |
422 | #endif | |
423 | ||
424 | if (ccb[mbo].tarstat == 2) { | |
425 | #ifdef DEBUG | |
426 | int i; | |
427 | #endif | |
428 | DEB(printk("aha1542_intr_handle: sense:")); | |
429 | #ifdef DEBUG | |
430 | for (i = 0; i < 12; i++) | |
431 | printk("%02x ", ccb[mbo].cdb[ccb[mbo].cdblen + i]); | |
432 | printk("\n"); | |
433 | #endif | |
434 | /* | |
435 | DEB(printk("aha1542_intr_handle: buf:")); | |
436 | for (i = 0; i < bufflen; i++) | |
437 | printk("%02x ", ((unchar *)buff)[i]); | |
438 | printk("\n"); | |
439 | */ | |
440 | } | |
441 | DEB(if (errstatus) printk("aha1542_intr_handle: returning %6x\n", errstatus)); | |
442 | SCtmp->result = errstatus; | |
e98878f7 OZ |
443 | aha1542->SCint[mbo] = NULL; /* This effectively frees up the mailbox slot, as |
444 | far as queuecommand is concerned */ | |
1da177e4 LT |
445 | my_done(SCtmp); |
446 | number_serviced++; | |
447 | }; | |
448 | } | |
449 | ||
09a44833 OZ |
450 | /* A quick wrapper for do_aha1542_intr_handle to grab the spin lock */ |
451 | static irqreturn_t do_aha1542_intr_handle(int dummy, void *dev_id) | |
452 | { | |
453 | unsigned long flags; | |
454 | struct Scsi_Host *shost = dev_id; | |
455 | ||
456 | spin_lock_irqsave(shost->host_lock, flags); | |
457 | aha1542_intr_handle(shost); | |
458 | spin_unlock_irqrestore(shost->host_lock, flags); | |
459 | return IRQ_HANDLED; | |
460 | } | |
461 | ||
f281233d | 462 | static int aha1542_queuecommand_lck(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *)) |
1da177e4 | 463 | { |
e98878f7 | 464 | struct aha1542_hostdata *aha1542 = shost_priv(SCpnt->device->host); |
cb5b570c OZ |
465 | u8 direction; |
466 | u8 *cmd = (u8 *) SCpnt->cmnd; | |
467 | u8 target = SCpnt->device->id; | |
468 | u8 lun = SCpnt->device->lun; | |
1da177e4 | 469 | unsigned long flags; |
fc3fdfcc | 470 | int bufflen = scsi_bufflen(SCpnt); |
1da177e4 | 471 | int mbo; |
e98878f7 OZ |
472 | struct mailbox *mb = aha1542->mb; |
473 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 LT |
474 | |
475 | DEB(int i); | |
476 | ||
1da177e4 LT |
477 | DEB(if (target > 1) { |
478 | SCpnt->result = DID_TIME_OUT << 16; | |
479 | done(SCpnt); return 0; | |
480 | } | |
481 | ); | |
482 | ||
483 | if (*cmd == REQUEST_SENSE) { | |
484 | /* Don't do the command - we have the sense data already */ | |
1da177e4 LT |
485 | SCpnt->result = 0; |
486 | done(SCpnt); | |
487 | return 0; | |
488 | } | |
489 | #ifdef DEBUG | |
490 | if (*cmd == READ_10 || *cmd == WRITE_10) | |
491 | i = xscsi2int(cmd + 2); | |
492 | else if (*cmd == READ_6 || *cmd == WRITE_6) | |
493 | i = scsi2int(cmd + 2); | |
494 | else | |
495 | i = -1; | |
496 | if (done) | |
497 | printk(KERN_DEBUG "aha1542_queuecommand: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen); | |
498 | else | |
499 | printk(KERN_DEBUG "aha1542_command: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen); | |
1da177e4 LT |
500 | printk(KERN_DEBUG "aha1542_queuecommand: dumping scsi cmd:"); |
501 | for (i = 0; i < SCpnt->cmd_len; i++) | |
502 | printk("%02x ", cmd[i]); | |
503 | printk("\n"); | |
504 | if (*cmd == WRITE_10 || *cmd == WRITE_6) | |
505 | return 0; /* we are still testing, so *don't* write */ | |
506 | #endif | |
507 | /* Use the outgoing mailboxes in a round-robin fashion, because this | |
508 | is how the host adapter will scan for them */ | |
509 | ||
510 | spin_lock_irqsave(&aha1542_lock, flags); | |
e98878f7 | 511 | mbo = aha1542->aha1542_last_mbo_used + 1; |
1da177e4 LT |
512 | if (mbo >= AHA1542_MAILBOXES) |
513 | mbo = 0; | |
514 | ||
515 | do { | |
e98878f7 | 516 | if (mb[mbo].status == 0 && aha1542->SCint[mbo] == NULL) |
1da177e4 LT |
517 | break; |
518 | mbo++; | |
519 | if (mbo >= AHA1542_MAILBOXES) | |
520 | mbo = 0; | |
e98878f7 | 521 | } while (mbo != aha1542->aha1542_last_mbo_used); |
1da177e4 | 522 | |
e98878f7 | 523 | if (mb[mbo].status || aha1542->SCint[mbo]) |
1da177e4 LT |
524 | panic("Unable to find empty mailbox for aha1542.\n"); |
525 | ||
e98878f7 OZ |
526 | aha1542->SCint[mbo] = SCpnt; /* This will effectively prevent someone else from |
527 | screwing with this cdb. */ | |
1da177e4 | 528 | |
e98878f7 | 529 | aha1542->aha1542_last_mbo_used = mbo; |
1da177e4 LT |
530 | spin_unlock_irqrestore(&aha1542_lock, flags); |
531 | ||
532 | #ifdef DEBUG | |
533 | printk(KERN_DEBUG "Sending command (%d %x)...", mbo, done); | |
534 | #endif | |
535 | ||
10be6250 | 536 | any2scsi(mb[mbo].ccbptr, isa_virt_to_bus(&ccb[mbo])); /* This gets trashed for some reason */ |
1da177e4 LT |
537 | |
538 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
539 | ||
540 | ccb[mbo].cdblen = SCpnt->cmd_len; | |
541 | ||
542 | direction = 0; | |
543 | if (*cmd == READ_10 || *cmd == READ_6) | |
544 | direction = 8; | |
545 | else if (*cmd == WRITE_10 || *cmd == WRITE_6) | |
546 | direction = 16; | |
547 | ||
548 | memcpy(ccb[mbo].cdb, cmd, ccb[mbo].cdblen); | |
549 | ||
fc3fdfcc | 550 | if (bufflen) { |
51cf2249 | 551 | struct scatterlist *sg; |
1da177e4 LT |
552 | struct chain *cptr; |
553 | #ifdef DEBUG | |
554 | unsigned char *ptr; | |
555 | #endif | |
fc3fdfcc | 556 | int i, sg_count = scsi_sg_count(SCpnt); |
1da177e4 | 557 | ccb[mbo].op = 2; /* SCSI Initiator Command w/scatter-gather */ |
fc3fdfcc BH |
558 | SCpnt->host_scribble = kmalloc(sizeof(*cptr)*sg_count, |
559 | GFP_KERNEL | GFP_DMA); | |
1da177e4 LT |
560 | cptr = (struct chain *) SCpnt->host_scribble; |
561 | if (cptr == NULL) { | |
562 | /* free the claimed mailbox slot */ | |
e98878f7 | 563 | aha1542->SCint[mbo] = NULL; |
1da177e4 LT |
564 | return SCSI_MLQUEUE_HOST_BUSY; |
565 | } | |
fc3fdfcc | 566 | scsi_for_each_sg(SCpnt, sg, sg_count, i) { |
10be6250 OZ |
567 | any2scsi(cptr[i].dataptr, isa_page_to_bus(sg_page(sg)) |
568 | + sg->offset); | |
51cf2249 | 569 | any2scsi(cptr[i].datalen, sg->length); |
1da177e4 | 570 | }; |
fc3fdfcc | 571 | any2scsi(ccb[mbo].datalen, sg_count * sizeof(struct chain)); |
10be6250 | 572 | any2scsi(ccb[mbo].dataptr, isa_virt_to_bus(cptr)); |
1da177e4 LT |
573 | #ifdef DEBUG |
574 | printk("cptr %x: ", cptr); | |
575 | ptr = (unsigned char *) cptr; | |
576 | for (i = 0; i < 18; i++) | |
577 | printk("%02x ", ptr[i]); | |
578 | #endif | |
579 | } else { | |
580 | ccb[mbo].op = 0; /* SCSI Initiator Command */ | |
581 | SCpnt->host_scribble = NULL; | |
fc3fdfcc BH |
582 | any2scsi(ccb[mbo].datalen, 0); |
583 | any2scsi(ccb[mbo].dataptr, 0); | |
1da177e4 LT |
584 | }; |
585 | ccb[mbo].idlun = (target & 7) << 5 | direction | (lun & 7); /*SCSI Target Id */ | |
586 | ccb[mbo].rsalen = 16; | |
587 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
588 | ccb[mbo].commlinkid = 0; | |
589 | ||
590 | #ifdef DEBUG | |
591 | { | |
592 | int i; | |
593 | printk(KERN_DEBUG "aha1542_command: sending.. "); | |
594 | for (i = 0; i < sizeof(ccb[mbo]) - 10; i++) | |
cb5b570c | 595 | printk("%02x ", ((u8 *) &ccb[mbo])[i]); |
1da177e4 LT |
596 | }; |
597 | #endif | |
598 | ||
599 | if (done) { | |
f232d538 | 600 | DEB(printk("aha1542_queuecommand: now waiting for interrupt ")); |
1da177e4 LT |
601 | SCpnt->scsi_done = done; |
602 | mb[mbo].status = 1; | |
0c2b6481 | 603 | aha1542_outb(SCpnt->device->host->io_port, CMD_START_SCSI); |
1da177e4 LT |
604 | } else |
605 | printk("aha1542_queuecommand: done can't be NULL\n"); | |
606 | ||
607 | return 0; | |
608 | } | |
609 | ||
f281233d JG |
610 | static DEF_SCSI_QCMD(aha1542_queuecommand) |
611 | ||
1da177e4 LT |
612 | /* Initialize mailboxes */ |
613 | static void setup_mailboxes(int bse, struct Scsi_Host *shpnt) | |
614 | { | |
e98878f7 | 615 | struct aha1542_hostdata *aha1542 = shost_priv(shpnt); |
1da177e4 | 616 | int i; |
e98878f7 OZ |
617 | struct mailbox *mb = aha1542->mb; |
618 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 | 619 | |
cb5b570c | 620 | u8 cmd[5] = { CMD_MBINIT, AHA1542_MAILBOXES, 0, 0, 0}; |
1da177e4 | 621 | |
1da177e4 LT |
622 | for (i = 0; i < AHA1542_MAILBOXES; i++) { |
623 | mb[i].status = mb[AHA1542_MAILBOXES + i].status = 0; | |
10be6250 | 624 | any2scsi(mb[i].ccbptr, isa_virt_to_bus(&ccb[i])); |
1da177e4 LT |
625 | }; |
626 | aha1542_intr_reset(bse); /* reset interrupts, so they don't block */ | |
10be6250 | 627 | any2scsi((cmd + 2), isa_virt_to_bus(mb)); |
23e6940a | 628 | if (aha1542_out(bse, cmd, 5)) |
1da177e4 | 629 | printk(KERN_ERR "aha1542_detect: failed setting up mailboxes\n"); |
1da177e4 LT |
630 | aha1542_intr_reset(bse); |
631 | } | |
632 | ||
3a70c006 | 633 | static int aha1542_getconfig(int base_io, unsigned int *irq_level, unsigned char *dma_chan, unsigned int *scsi_id) |
1da177e4 | 634 | { |
cb5b570c | 635 | u8 inquiry_result[3]; |
1da177e4 LT |
636 | int i; |
637 | i = inb(STATUS(base_io)); | |
638 | if (i & DF) { | |
639 | i = inb(DATA(base_io)); | |
640 | }; | |
0c2b6481 | 641 | aha1542_outb(base_io, CMD_RETCONF); |
f8846be3 | 642 | aha1542_in(base_io, inquiry_result, 3, 0); |
2093bfa1 | 643 | if (!wait_mask(INTRFLAGS(base_io), INTRMASK, HACC, 0, 0)) |
1da177e4 | 644 | printk(KERN_ERR "aha1542_detect: query board settings\n"); |
1da177e4 LT |
645 | aha1542_intr_reset(base_io); |
646 | switch (inquiry_result[0]) { | |
647 | case 0x80: | |
648 | *dma_chan = 7; | |
649 | break; | |
650 | case 0x40: | |
651 | *dma_chan = 6; | |
652 | break; | |
653 | case 0x20: | |
654 | *dma_chan = 5; | |
655 | break; | |
656 | case 0x01: | |
657 | *dma_chan = 0; | |
658 | break; | |
659 | case 0: | |
660 | /* This means that the adapter, although Adaptec 1542 compatible, doesn't use a DMA channel. | |
661 | Currently only aware of the BusLogic BT-445S VL-Bus adapter which needs this. */ | |
662 | *dma_chan = 0xFF; | |
663 | break; | |
664 | default: | |
665 | printk(KERN_ERR "Unable to determine Adaptec DMA priority. Disabling board\n"); | |
666 | return -1; | |
667 | }; | |
668 | switch (inquiry_result[1]) { | |
669 | case 0x40: | |
670 | *irq_level = 15; | |
671 | break; | |
672 | case 0x20: | |
673 | *irq_level = 14; | |
674 | break; | |
675 | case 0x8: | |
676 | *irq_level = 12; | |
677 | break; | |
678 | case 0x4: | |
679 | *irq_level = 11; | |
680 | break; | |
681 | case 0x2: | |
682 | *irq_level = 10; | |
683 | break; | |
684 | case 0x1: | |
685 | *irq_level = 9; | |
686 | break; | |
687 | default: | |
688 | printk(KERN_ERR "Unable to determine Adaptec IRQ level. Disabling board\n"); | |
689 | return -1; | |
690 | }; | |
691 | *scsi_id = inquiry_result[2] & 7; | |
692 | return 0; | |
693 | } | |
694 | ||
695 | /* This function should only be called for 1542C boards - we can detect | |
696 | the special firmware settings and unlock the board */ | |
697 | ||
643a7c43 | 698 | static int aha1542_mbenable(int base) |
1da177e4 | 699 | { |
cb5b570c OZ |
700 | static u8 mbenable_cmd[3]; |
701 | static u8 mbenable_result[2]; | |
1da177e4 LT |
702 | int retval; |
703 | ||
704 | retval = BIOS_TRANSLATION_6432; | |
705 | ||
0c2b6481 | 706 | aha1542_outb(base, CMD_EXTBIOS); |
f8846be3 | 707 | if (aha1542_in(base, mbenable_result, 2, 100)) |
1da177e4 | 708 | return retval; |
2093bfa1 OZ |
709 | if (!wait_mask(INTRFLAGS(base), INTRMASK, HACC, 0, 100)) |
710 | goto fail; | |
1da177e4 LT |
711 | aha1542_intr_reset(base); |
712 | ||
713 | if ((mbenable_result[0] & 0x08) || mbenable_result[1]) { | |
714 | mbenable_cmd[0] = CMD_MBENABLE; | |
715 | mbenable_cmd[1] = 0; | |
716 | mbenable_cmd[2] = mbenable_result[1]; | |
717 | ||
718 | if ((mbenable_result[0] & 0x08) && (mbenable_result[1] & 0x03)) | |
719 | retval = BIOS_TRANSLATION_25563; | |
720 | ||
23e6940a | 721 | if (aha1542_out(base, mbenable_cmd, 3)) |
2093bfa1 | 722 | goto fail; |
1da177e4 LT |
723 | }; |
724 | while (0) { | |
725 | fail: | |
726 | printk(KERN_ERR "aha1542_mbenable: Mailbox init failed\n"); | |
727 | } | |
728 | aha1542_intr_reset(base); | |
729 | return retval; | |
730 | } | |
731 | ||
732 | /* Query the board to find out if it is a 1542 or a 1740, or whatever. */ | |
643a7c43 | 733 | static int aha1542_query(int base_io, int *transl) |
1da177e4 | 734 | { |
cb5b570c | 735 | u8 inquiry_result[4]; |
1da177e4 LT |
736 | int i; |
737 | i = inb(STATUS(base_io)); | |
738 | if (i & DF) { | |
739 | i = inb(DATA(base_io)); | |
740 | }; | |
0c2b6481 | 741 | aha1542_outb(base_io, CMD_INQUIRY); |
f8846be3 | 742 | aha1542_in(base_io, inquiry_result, 4, 0); |
2093bfa1 | 743 | if (!wait_mask(INTRFLAGS(base_io), INTRMASK, HACC, 0, 0)) |
1da177e4 | 744 | printk(KERN_ERR "aha1542_detect: query card type\n"); |
1da177e4 LT |
745 | aha1542_intr_reset(base_io); |
746 | ||
747 | *transl = BIOS_TRANSLATION_6432; /* Default case */ | |
748 | ||
749 | /* For an AHA1740 series board, we ignore the board since there is a | |
750 | hardware bug which can lead to wrong blocks being returned if the board | |
751 | is operating in the 1542 emulation mode. Since there is an extended mode | |
752 | driver, we simply ignore the board and let the 1740 driver pick it up. | |
753 | */ | |
754 | ||
755 | if (inquiry_result[0] == 0x43) { | |
756 | printk(KERN_INFO "aha1542.c: Emulation mode not supported for AHA 174N hardware.\n"); | |
757 | return 1; | |
758 | }; | |
759 | ||
760 | /* Always call this - boards that do not support extended bios translation | |
761 | will ignore the command, and we will set the proper default */ | |
762 | ||
763 | *transl = aha1542_mbenable(base_io); | |
764 | ||
765 | return 0; | |
766 | } | |
767 | ||
f71429ab | 768 | static u8 dma_speed_hw(int dma_speed) |
1da177e4 | 769 | { |
f71429ab OZ |
770 | switch (dma_speed) { |
771 | case 5: | |
772 | return 0x00; | |
773 | case 6: | |
774 | return 0x04; | |
775 | case 7: | |
776 | return 0x01; | |
777 | case 8: | |
778 | return 0x02; | |
779 | case 10: | |
780 | return 0x03; | |
1da177e4 | 781 | } |
1da177e4 | 782 | |
f71429ab | 783 | return 0xff; /* invalid */ |
1da177e4 LT |
784 | } |
785 | ||
f71429ab OZ |
786 | /* Set the Bus on/off-times as not to ruin floppy performance */ |
787 | static void aha1542_set_bus_times(int indx) | |
1da177e4 | 788 | { |
f71429ab | 789 | unsigned int base_io = io[indx]; |
1da177e4 | 790 | |
f71429ab OZ |
791 | if (bus_on[indx] > 0) { |
792 | u8 oncmd[] = { CMD_BUSON_TIME, clamp(bus_on[indx], 2, 15) }; | |
1da177e4 | 793 | |
f71429ab OZ |
794 | aha1542_intr_reset(base_io); |
795 | if (aha1542_out(base_io, oncmd, 2)) | |
796 | goto fail; | |
797 | } | |
1da177e4 | 798 | |
f71429ab OZ |
799 | if (bus_off[indx] > 0) { |
800 | u8 offcmd[] = { CMD_BUSOFF_TIME, clamp(bus_off[indx], 1, 64) }; | |
1da177e4 | 801 | |
f71429ab OZ |
802 | aha1542_intr_reset(base_io); |
803 | if (aha1542_out(base_io, offcmd, 2)) | |
804 | goto fail; | |
805 | } | |
1da177e4 | 806 | |
f71429ab OZ |
807 | if (dma_speed_hw(dma_speed[indx]) != 0xff) { |
808 | u8 dmacmd[] = { CMD_DMASPEED, dma_speed_hw(dma_speed[indx]) }; | |
b847fd0d | 809 | |
b847fd0d | 810 | aha1542_intr_reset(base_io); |
23e6940a | 811 | if (aha1542_out(base_io, dmacmd, 2)) |
b847fd0d OZ |
812 | goto fail; |
813 | } | |
814 | aha1542_intr_reset(base_io); | |
815 | return; | |
816 | fail: | |
817 | printk(KERN_ERR "setting bus on/off-time failed\n"); | |
818 | aha1542_intr_reset(base_io); | |
819 | } | |
820 | ||
1da177e4 | 821 | /* return non-zero on detection */ |
643a7c43 | 822 | static struct Scsi_Host *aha1542_hw_init(struct scsi_host_template *tpnt, struct device *pdev, int indx) |
1da177e4 | 823 | { |
f71429ab | 824 | unsigned int base_io = io[indx]; |
3a70c006 | 825 | struct Scsi_Host *shpnt; |
e98878f7 | 826 | struct aha1542_hostdata *aha1542; |
1da177e4 | 827 | |
3a70c006 OZ |
828 | if (base_io == 0) |
829 | return NULL; | |
1da177e4 | 830 | |
3a70c006 OZ |
831 | if (!request_region(base_io, AHA1542_REGION_SIZE, "aha1542")) |
832 | return NULL; | |
1da177e4 | 833 | |
3a70c006 OZ |
834 | shpnt = scsi_host_alloc(tpnt, sizeof(struct aha1542_hostdata)); |
835 | if (!shpnt) | |
836 | goto release; | |
837 | aha1542 = shost_priv(shpnt); | |
b847fd0d | 838 | |
3a70c006 OZ |
839 | if (!aha1542_test_port(base_io, shpnt)) |
840 | goto unregister; | |
1da177e4 | 841 | |
3a70c006 OZ |
842 | aha1542_set_bus_times(indx); |
843 | if (aha1542_query(base_io, &aha1542->bios_translation)) | |
844 | goto unregister; | |
845 | if (aha1542_getconfig(base_io, &shpnt->irq, &shpnt->dma_channel, &shpnt->this_id) == -1) | |
846 | goto unregister; | |
1da177e4 | 847 | |
3a70c006 OZ |
848 | printk(KERN_INFO "Adaptec AHA-1542 (SCSI-ID %d) at IO 0x%x, IRQ %d", shpnt->this_id, base_io, shpnt->irq); |
849 | if (shpnt->dma_channel != 0xFF) | |
850 | printk(", DMA %d", shpnt->dma_channel); | |
851 | printk("\n"); | |
852 | if (aha1542->bios_translation == BIOS_TRANSLATION_25563) | |
853 | printk(KERN_INFO "aha1542.c: Using extended bios translation\n"); | |
1da177e4 | 854 | |
3a70c006 | 855 | setup_mailboxes(base_io, shpnt); |
1da177e4 | 856 | |
3a70c006 | 857 | if (request_irq(shpnt->irq, do_aha1542_intr_handle, 0, |
87c4d7bc | 858 | "aha1542", shpnt)) { |
3a70c006 OZ |
859 | printk(KERN_ERR "Unable to allocate IRQ for adaptec controller.\n"); |
860 | goto unregister; | |
861 | } | |
862 | if (shpnt->dma_channel != 0xFF) { | |
863 | if (request_dma(shpnt->dma_channel, "aha1542")) { | |
864 | printk(KERN_ERR "Unable to allocate DMA channel for Adaptec.\n"); | |
865 | goto free_irq; | |
866 | } | |
867 | if (shpnt->dma_channel == 0 || shpnt->dma_channel >= 5) { | |
868 | set_dma_mode(shpnt->dma_channel, DMA_MODE_CASCADE); | |
869 | enable_dma(shpnt->dma_channel); | |
870 | } | |
871 | } | |
1da177e4 | 872 | |
3a70c006 OZ |
873 | shpnt->unique_id = base_io; |
874 | shpnt->io_port = base_io; | |
875 | shpnt->n_io_port = AHA1542_REGION_SIZE; | |
876 | aha1542->aha1542_last_mbi_used = 2 * AHA1542_MAILBOXES - 1; | |
877 | aha1542->aha1542_last_mbo_used = AHA1542_MAILBOXES - 1; | |
1da177e4 | 878 | |
3a70c006 OZ |
879 | if (scsi_add_host(shpnt, pdev)) |
880 | goto free_dma; | |
1da177e4 | 881 | |
3a70c006 | 882 | scsi_scan_host(shpnt); |
1da177e4 | 883 | |
3a70c006 OZ |
884 | return shpnt; |
885 | free_dma: | |
886 | if (shpnt->dma_channel != 0xff) | |
887 | free_dma(shpnt->dma_channel); | |
888 | free_irq: | |
889 | free_irq(shpnt->irq, shpnt); | |
890 | unregister: | |
891 | scsi_host_put(shpnt); | |
892 | release: | |
893 | release_region(base_io, AHA1542_REGION_SIZE); | |
1da177e4 | 894 | |
643a7c43 | 895 | return NULL; |
1da177e4 LT |
896 | } |
897 | ||
898 | static int aha1542_release(struct Scsi_Host *shost) | |
899 | { | |
643a7c43 | 900 | scsi_remove_host(shost); |
1da177e4 LT |
901 | if (shost->dma_channel != 0xff) |
902 | free_dma(shost->dma_channel); | |
3a70c006 OZ |
903 | if (shost->irq) |
904 | free_irq(shost->irq, shost); | |
1da177e4 LT |
905 | if (shost->io_port && shost->n_io_port) |
906 | release_region(shost->io_port, shost->n_io_port); | |
643a7c43 | 907 | scsi_host_put(shost); |
1da177e4 LT |
908 | return 0; |
909 | } | |
910 | ||
1da177e4 | 911 | |
1da177e4 LT |
912 | /* |
913 | * This is a device reset. This is handled by sending a special command | |
914 | * to the device. | |
915 | */ | |
916 | static int aha1542_dev_reset(Scsi_Cmnd * SCpnt) | |
917 | { | |
e98878f7 | 918 | struct aha1542_hostdata *aha1542 = shost_priv(SCpnt->device->host); |
1da177e4 | 919 | unsigned long flags; |
e98878f7 | 920 | struct mailbox *mb = aha1542->mb; |
cb5b570c OZ |
921 | u8 target = SCpnt->device->id; |
922 | u8 lun = SCpnt->device->lun; | |
1da177e4 | 923 | int mbo; |
e98878f7 | 924 | struct ccb *ccb = aha1542->ccb; |
1da177e4 | 925 | |
1da177e4 | 926 | spin_lock_irqsave(&aha1542_lock, flags); |
e98878f7 | 927 | mbo = aha1542->aha1542_last_mbo_used + 1; |
1da177e4 LT |
928 | if (mbo >= AHA1542_MAILBOXES) |
929 | mbo = 0; | |
930 | ||
931 | do { | |
e98878f7 | 932 | if (mb[mbo].status == 0 && aha1542->SCint[mbo] == NULL) |
1da177e4 LT |
933 | break; |
934 | mbo++; | |
935 | if (mbo >= AHA1542_MAILBOXES) | |
936 | mbo = 0; | |
e98878f7 | 937 | } while (mbo != aha1542->aha1542_last_mbo_used); |
1da177e4 | 938 | |
e98878f7 | 939 | if (mb[mbo].status || aha1542->SCint[mbo]) |
1da177e4 LT |
940 | panic("Unable to find empty mailbox for aha1542.\n"); |
941 | ||
e98878f7 OZ |
942 | aha1542->SCint[mbo] = SCpnt; /* This will effectively |
943 | prevent someone else from | |
944 | screwing with this cdb. */ | |
1da177e4 | 945 | |
e98878f7 | 946 | aha1542->aha1542_last_mbo_used = mbo; |
1da177e4 LT |
947 | spin_unlock_irqrestore(&aha1542_lock, flags); |
948 | ||
10be6250 | 949 | any2scsi(mb[mbo].ccbptr, isa_virt_to_bus(&ccb[mbo])); /* This gets trashed for some reason */ |
1da177e4 LT |
950 | |
951 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
952 | ||
953 | ccb[mbo].op = 0x81; /* BUS DEVICE RESET */ | |
954 | ||
955 | ccb[mbo].idlun = (target & 7) << 5 | (lun & 7); /*SCSI Target Id */ | |
956 | ||
957 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
958 | ccb[mbo].commlinkid = 0; | |
959 | ||
960 | /* | |
961 | * Now tell the 1542 to flush all pending commands for this | |
962 | * target | |
963 | */ | |
0c2b6481 | 964 | aha1542_outb(SCpnt->device->host->io_port, CMD_START_SCSI); |
1da177e4 | 965 | |
017560fc JG |
966 | scmd_printk(KERN_WARNING, SCpnt, |
967 | "Trying device reset for target\n"); | |
1da177e4 LT |
968 | |
969 | return SUCCESS; | |
1da177e4 LT |
970 | } |
971 | ||
8537cba8 | 972 | static int aha1542_reset(Scsi_Cmnd *SCpnt, u8 reset_cmd) |
1da177e4 | 973 | { |
e98878f7 | 974 | struct aha1542_hostdata *aha1542 = shost_priv(SCpnt->device->host); |
1da177e4 LT |
975 | int i; |
976 | ||
977 | /* | |
978 | * This does a scsi reset for all devices on the bus. | |
979 | * In principle, we could also reset the 1542 - should | |
980 | * we do this? Try this first, and we can add that later | |
981 | * if it turns out to be useful. | |
982 | */ | |
8537cba8 | 983 | outb(reset_cmd, CONTROL(SCpnt->device->host->io_port)); |
1da177e4 LT |
984 | |
985 | /* | |
986 | * Wait for the thing to settle down a bit. Unfortunately | |
987 | * this is going to basically lock up the machine while we | |
988 | * wait for this to complete. To be 100% correct, we need to | |
989 | * check for timeout, and if we are doing something like this | |
990 | * we are pretty desperate anyways. | |
991 | */ | |
1da177e4 LT |
992 | ssleep(4); |
993 | spin_lock_irq(SCpnt->device->host->host_lock); | |
994 | ||
2093bfa1 | 995 | if (!wait_mask(STATUS(SCpnt->device->host->io_port), |
a13b3722 OZ |
996 | STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0)) { |
997 | spin_unlock_irq(SCpnt->device->host->host_lock); | |
998 | return FAILED; | |
999 | } | |
8537cba8 OZ |
1000 | /* |
1001 | * We need to do this too before the 1542 can interact with | |
1002 | * us again after host reset. | |
1003 | */ | |
1004 | if (reset_cmd & HRST) | |
1005 | setup_mailboxes(SCpnt->device->host->io_port, SCpnt->device->host); | |
1da177e4 LT |
1006 | /* |
1007 | * Now try to pick up the pieces. For all pending commands, | |
1008 | * free any internal data structures, and basically clear things | |
1009 | * out. We do not try and restart any commands or anything - | |
1010 | * the strategy handler takes care of that crap. | |
1011 | */ | |
1012 | printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->device->host->host_no); | |
1013 | ||
1014 | for (i = 0; i < AHA1542_MAILBOXES; i++) { | |
e98878f7 | 1015 | if (aha1542->SCint[i] != NULL) { |
1da177e4 | 1016 | Scsi_Cmnd *SCtmp; |
e98878f7 | 1017 | SCtmp = aha1542->SCint[i]; |
1da177e4 | 1018 | |
1da177e4 LT |
1019 | if (SCtmp->device->soft_reset) { |
1020 | /* | |
1021 | * If this device implements the soft reset option, | |
1022 | * then it is still holding onto the command, and | |
1023 | * may yet complete it. In this case, we don't | |
1024 | * flush the data. | |
1025 | */ | |
1026 | continue; | |
1027 | } | |
c9475cb0 JJ |
1028 | kfree(SCtmp->host_scribble); |
1029 | SCtmp->host_scribble = NULL; | |
e98878f7 OZ |
1030 | aha1542->SCint[i] = NULL; |
1031 | aha1542->mb[i].status = 0; | |
1da177e4 LT |
1032 | } |
1033 | } | |
1034 | ||
68b3aa7c | 1035 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1da177e4 | 1036 | return SUCCESS; |
1da177e4 LT |
1037 | } |
1038 | ||
8537cba8 | 1039 | static int aha1542_bus_reset(Scsi_Cmnd *SCpnt) |
1da177e4 | 1040 | { |
8537cba8 OZ |
1041 | return aha1542_reset(SCpnt, SCRST); |
1042 | } | |
1da177e4 | 1043 | |
8537cba8 OZ |
1044 | static int aha1542_host_reset(Scsi_Cmnd *SCpnt) |
1045 | { | |
1046 | return aha1542_reset(SCpnt, HRST | SCRST); | |
1da177e4 LT |
1047 | } |
1048 | ||
1da177e4 | 1049 | static int aha1542_biosparam(struct scsi_device *sdev, |
17787a09 | 1050 | struct block_device *bdev, sector_t capacity, int geom[]) |
1da177e4 | 1051 | { |
e98878f7 | 1052 | struct aha1542_hostdata *aha1542 = shost_priv(sdev->host); |
1da177e4 | 1053 | |
17787a09 OZ |
1054 | if (capacity >= 0x200000 && |
1055 | aha1542->bios_translation == BIOS_TRANSLATION_25563) { | |
1da177e4 | 1056 | /* Please verify that this is the same as what DOS returns */ |
17787a09 OZ |
1057 | geom[0] = 255; /* heads */ |
1058 | geom[1] = 63; /* sectors */ | |
1da177e4 | 1059 | } else { |
17787a09 OZ |
1060 | geom[0] = 64; /* heads */ |
1061 | geom[1] = 32; /* sectors */ | |
1da177e4 | 1062 | } |
17787a09 | 1063 | geom[2] = sector_div(capacity, geom[0] * geom[1]); /* cylinders */ |
1da177e4 LT |
1064 | |
1065 | return 0; | |
1066 | } | |
1067 | MODULE_LICENSE("GPL"); | |
1068 | ||
d0be4a7d | 1069 | static struct scsi_host_template driver_template = { |
643a7c43 | 1070 | .module = THIS_MODULE, |
1da177e4 LT |
1071 | .proc_name = "aha1542", |
1072 | .name = "Adaptec 1542", | |
1da177e4 | 1073 | .queuecommand = aha1542_queuecommand, |
1da177e4 LT |
1074 | .eh_device_reset_handler= aha1542_dev_reset, |
1075 | .eh_bus_reset_handler = aha1542_bus_reset, | |
1076 | .eh_host_reset_handler = aha1542_host_reset, | |
1077 | .bios_param = aha1542_biosparam, | |
1078 | .can_queue = AHA1542_MAILBOXES, | |
1079 | .this_id = 7, | |
10be6250 OZ |
1080 | .sg_tablesize = 16, |
1081 | .cmd_per_lun = 1, | |
1da177e4 LT |
1082 | .unchecked_isa_dma = 1, |
1083 | .use_clustering = ENABLE_CLUSTERING, | |
1084 | }; | |
643a7c43 OZ |
1085 | |
1086 | static int aha1542_isa_match(struct device *pdev, unsigned int ndev) | |
1087 | { | |
1088 | struct Scsi_Host *sh = aha1542_hw_init(&driver_template, pdev, ndev); | |
1089 | ||
1090 | if (!sh) | |
1091 | return 0; | |
1092 | ||
1093 | dev_set_drvdata(pdev, sh); | |
1094 | return 1; | |
1095 | } | |
1096 | ||
1097 | static int aha1542_isa_remove(struct device *pdev, | |
1098 | unsigned int ndev) | |
1099 | { | |
1100 | aha1542_release(dev_get_drvdata(pdev)); | |
1101 | dev_set_drvdata(pdev, NULL); | |
1102 | return 0; | |
1103 | } | |
1104 | ||
1105 | static struct isa_driver aha1542_isa_driver = { | |
1106 | .match = aha1542_isa_match, | |
1107 | .remove = aha1542_isa_remove, | |
1108 | .driver = { | |
1109 | .name = "aha1542" | |
1110 | }, | |
1111 | }; | |
1112 | static int isa_registered; | |
1113 | ||
1114 | #ifdef CONFIG_PNP | |
1115 | static struct pnp_device_id aha1542_pnp_ids[] = { | |
1116 | { .id = "ADP1542" }, | |
1117 | { .id = "" } | |
1118 | }; | |
1119 | MODULE_DEVICE_TABLE(pnp, aha1542_pnp_ids); | |
1120 | ||
1121 | static int aha1542_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *id) | |
1122 | { | |
1123 | int indx; | |
1124 | struct Scsi_Host *sh; | |
1125 | ||
f71429ab OZ |
1126 | for (indx = 0; indx < ARRAY_SIZE(io); indx++) { |
1127 | if (io[indx]) | |
643a7c43 OZ |
1128 | continue; |
1129 | ||
1130 | if (pnp_activate_dev(pdev) < 0) | |
1131 | continue; | |
1132 | ||
f71429ab | 1133 | io[indx] = pnp_port_start(pdev, 0); |
643a7c43 OZ |
1134 | |
1135 | /* The card can be queried for its DMA, we have | |
1136 | the DMA set up that is enough */ | |
1137 | ||
f71429ab | 1138 | printk(KERN_INFO "ISAPnP found an AHA1535 at I/O 0x%03X\n", io[indx]); |
643a7c43 OZ |
1139 | } |
1140 | ||
1141 | sh = aha1542_hw_init(&driver_template, &pdev->dev, indx); | |
1142 | if (!sh) | |
1143 | return -ENODEV; | |
1144 | ||
1145 | pnp_set_drvdata(pdev, sh); | |
1146 | return 0; | |
1147 | } | |
1148 | ||
1149 | static void aha1542_pnp_remove(struct pnp_dev *pdev) | |
1150 | { | |
1151 | aha1542_release(pnp_get_drvdata(pdev)); | |
1152 | pnp_set_drvdata(pdev, NULL); | |
1153 | } | |
1154 | ||
1155 | static struct pnp_driver aha1542_pnp_driver = { | |
1156 | .name = "aha1542", | |
1157 | .id_table = aha1542_pnp_ids, | |
1158 | .probe = aha1542_pnp_probe, | |
1159 | .remove = aha1542_pnp_remove, | |
1160 | }; | |
1161 | static int pnp_registered; | |
1162 | #endif /* CONFIG_PNP */ | |
1163 | ||
1164 | static int __init aha1542_init(void) | |
1165 | { | |
1166 | int ret = 0; | |
643a7c43 OZ |
1167 | |
1168 | #ifdef CONFIG_PNP | |
1169 | if (isapnp) { | |
1170 | ret = pnp_register_driver(&aha1542_pnp_driver); | |
1171 | if (!ret) | |
1172 | pnp_registered = 1; | |
1173 | } | |
1174 | #endif | |
1175 | ret = isa_register_driver(&aha1542_isa_driver, MAXBOARDS); | |
1176 | if (!ret) | |
1177 | isa_registered = 1; | |
1178 | ||
1179 | #ifdef CONFIG_PNP | |
1180 | if (pnp_registered) | |
1181 | ret = 0; | |
1182 | #endif | |
1183 | if (isa_registered) | |
1184 | ret = 0; | |
1185 | ||
1186 | return ret; | |
1187 | } | |
1188 | ||
1189 | static void __exit aha1542_exit(void) | |
1190 | { | |
1191 | #ifdef CONFIG_PNP | |
1192 | if (pnp_registered) | |
1193 | pnp_unregister_driver(&aha1542_pnp_driver); | |
1194 | #endif | |
1195 | if (isa_registered) | |
1196 | isa_unregister_driver(&aha1542_isa_driver); | |
1197 | } | |
1198 | ||
1199 | module_init(aha1542_init); | |
1200 | module_exit(aha1542_exit); |