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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. */ | |
cad2fc72 | 127 | static int aha1542_outb(unsigned int base, u8 val) |
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 | } |
cad2fc72 | 141 | outb(val, DATA(base)); |
1da177e4 | 142 | spin_unlock_irqrestore(&aha1542_lock, flags); |
0c2b6481 | 143 | return 0; |
1da177e4 | 144 | } |
0c2b6481 OZ |
145 | } |
146 | ||
cad2fc72 | 147 | static int aha1542_out(unsigned int base, u8 *buf, int len) |
0c2b6481 OZ |
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 | } | |
cad2fc72 | 158 | outb(*buf++, DATA(base)); |
0c2b6481 OZ |
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 | ||
cad2fc72 | 170 | static int aha1542_in(unsigned int base, u8 *buf, 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 | } | |
cad2fc72 | 182 | *buf++ = inb(DATA(base)); |
1da177e4 LT |
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 | 246 | u8 inquiry_result[4]; |
cad2fc72 | 247 | int i; |
1da177e4 LT |
248 | |
249 | /* Quick and dirty test for presence of the card. */ | |
250 | if (inb(STATUS(bse)) == 0xff) | |
251 | return 0; | |
252 | ||
253 | /* Reset the adapter. I ought to make a hard reset, but it's not really necessary */ | |
254 | ||
1da177e4 LT |
255 | /* In case some other card was probing here, reset interrupts */ |
256 | aha1542_intr_reset(bse); /* reset interrupts, so they don't block */ | |
257 | ||
258 | outb(SRST | IRST /*|SCRST */ , CONTROL(bse)); | |
259 | ||
260 | mdelay(20); /* Wait a little bit for things to settle down. */ | |
261 | ||
1da177e4 | 262 | /* Expect INIT and IDLE, any of the others are bad */ |
2093bfa1 | 263 | if (!wait_mask(STATUS(bse), STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0)) |
a13b3722 | 264 | return 0; |
1da177e4 | 265 | |
1da177e4 LT |
266 | /* Shouldn't have generated any interrupts during reset */ |
267 | if (inb(INTRFLAGS(bse)) & INTRMASK) | |
a13b3722 | 268 | return 0; |
1da177e4 | 269 | |
1da177e4 LT |
270 | /* Perform a host adapter inquiry instead so we do not need to set |
271 | up the mailboxes ahead of time */ | |
272 | ||
0c2b6481 | 273 | aha1542_outb(bse, CMD_INQUIRY); |
1da177e4 | 274 | |
cad2fc72 | 275 | for (i = 0; i < 4; i++) { |
2093bfa1 | 276 | if (!wait_mask(STATUS(bse), DF, DF, 0, 0)) |
a13b3722 | 277 | return 0; |
cad2fc72 | 278 | inquiry_result[i] = inb(DATA(bse)); |
1da177e4 LT |
279 | } |
280 | ||
1da177e4 LT |
281 | /* Reading port should reset DF */ |
282 | if (inb(STATUS(bse)) & DF) | |
a13b3722 | 283 | return 0; |
1da177e4 | 284 | |
1da177e4 | 285 | /* When HACC, command is completed, and we're though testing */ |
2093bfa1 | 286 | if (!wait_mask(INTRFLAGS(bse), HACC, HACC, 0, 0)) |
a13b3722 | 287 | return 0; |
1da177e4 | 288 | |
1da177e4 LT |
289 | /* Clear interrupts */ |
290 | outb(IRST, CONTROL(bse)); | |
291 | ||
bdebe224 | 292 | return 1; |
1da177e4 LT |
293 | } |
294 | ||
1da177e4 | 295 | /* A "high" level interrupt handler */ |
87c4d7bc | 296 | static void aha1542_intr_handle(struct Scsi_Host *shost) |
1da177e4 | 297 | { |
e98878f7 | 298 | struct aha1542_hostdata *aha1542 = shost_priv(shost); |
1da177e4 LT |
299 | void (*my_done) (Scsi_Cmnd *) = NULL; |
300 | int errstatus, mbi, mbo, mbistatus; | |
301 | int number_serviced; | |
302 | unsigned long flags; | |
303 | Scsi_Cmnd *SCtmp; | |
304 | int flag; | |
e98878f7 OZ |
305 | struct mailbox *mb = aha1542->mb; |
306 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 LT |
307 | |
308 | #ifdef DEBUG | |
309 | { | |
310 | flag = inb(INTRFLAGS(shost->io_port)); | |
311 | printk(KERN_DEBUG "aha1542_intr_handle: "); | |
312 | if (!(flag & ANYINTR)) | |
313 | printk("no interrupt?"); | |
314 | if (flag & MBIF) | |
315 | printk("MBIF "); | |
316 | if (flag & MBOA) | |
317 | printk("MBOF "); | |
318 | if (flag & HACC) | |
319 | printk("HACC "); | |
320 | if (flag & SCRD) | |
321 | printk("SCRD "); | |
322 | printk("status %02x\n", inb(STATUS(shost->io_port))); | |
323 | }; | |
324 | #endif | |
325 | number_serviced = 0; | |
1da177e4 LT |
326 | |
327 | while (1 == 1) { | |
328 | flag = inb(INTRFLAGS(shost->io_port)); | |
329 | ||
330 | /* Check for unusual interrupts. If any of these happen, we should | |
331 | probably do something special, but for now just printing a message | |
332 | is sufficient. A SCSI reset detected is something that we really | |
333 | need to deal with in some way. */ | |
334 | if (flag & ~MBIF) { | |
335 | if (flag & MBOA) | |
336 | printk("MBOF "); | |
337 | if (flag & HACC) | |
338 | printk("HACC "); | |
dfd7c991 | 339 | if (flag & SCRD) |
1da177e4 | 340 | printk("SCRD "); |
1da177e4 LT |
341 | } |
342 | aha1542_intr_reset(shost->io_port); | |
343 | ||
344 | spin_lock_irqsave(&aha1542_lock, flags); | |
e98878f7 | 345 | mbi = aha1542->aha1542_last_mbi_used + 1; |
1da177e4 LT |
346 | if (mbi >= 2 * AHA1542_MAILBOXES) |
347 | mbi = AHA1542_MAILBOXES; | |
348 | ||
349 | do { | |
350 | if (mb[mbi].status != 0) | |
351 | break; | |
352 | mbi++; | |
353 | if (mbi >= 2 * AHA1542_MAILBOXES) | |
354 | mbi = AHA1542_MAILBOXES; | |
e98878f7 | 355 | } while (mbi != aha1542->aha1542_last_mbi_used); |
1da177e4 LT |
356 | |
357 | if (mb[mbi].status == 0) { | |
358 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
359 | /* Hmm, no mail. Must have read it the last time around */ | |
dfd7c991 | 360 | if (!number_serviced) |
1da177e4 | 361 | printk(KERN_WARNING "aha1542.c: interrupt received, but no mail.\n"); |
1da177e4 LT |
362 | return; |
363 | }; | |
364 | ||
10be6250 | 365 | mbo = (scsi2int(mb[mbi].ccbptr) - (isa_virt_to_bus(&ccb[0]))) / sizeof(struct ccb); |
1da177e4 LT |
366 | mbistatus = mb[mbi].status; |
367 | mb[mbi].status = 0; | |
e98878f7 | 368 | aha1542->aha1542_last_mbi_used = mbi; |
1da177e4 LT |
369 | spin_unlock_irqrestore(&aha1542_lock, flags); |
370 | ||
371 | #ifdef DEBUG | |
372 | { | |
373 | if (ccb[mbo].tarstat | ccb[mbo].hastat) | |
374 | printk(KERN_DEBUG "aha1542_command: returning %x (status %d)\n", | |
375 | ccb[mbo].tarstat + ((int) ccb[mbo].hastat << 16), mb[mbi].status); | |
376 | }; | |
377 | #endif | |
378 | ||
379 | if (mbistatus == 3) | |
380 | continue; /* Aborted command not found */ | |
381 | ||
382 | #ifdef DEBUG | |
383 | printk(KERN_DEBUG "...done %d %d\n", mbo, mbi); | |
384 | #endif | |
385 | ||
e98878f7 | 386 | SCtmp = aha1542->SCint[mbo]; |
1da177e4 LT |
387 | |
388 | if (!SCtmp || !SCtmp->scsi_done) { | |
389 | printk(KERN_WARNING "aha1542_intr_handle: Unexpected interrupt\n"); | |
390 | printk(KERN_WARNING "tarstat=%x, hastat=%x idlun=%x ccb#=%d \n", ccb[mbo].tarstat, | |
391 | ccb[mbo].hastat, ccb[mbo].idlun, mbo); | |
392 | return; | |
393 | } | |
394 | my_done = SCtmp->scsi_done; | |
c9475cb0 JJ |
395 | kfree(SCtmp->host_scribble); |
396 | SCtmp->host_scribble = NULL; | |
1da177e4 LT |
397 | /* Fetch the sense data, and tuck it away, in the required slot. The |
398 | Adaptec automatically fetches it, and there is no guarantee that | |
399 | we will still have it in the cdb when we come back */ | |
400 | if (ccb[mbo].tarstat == 2) | |
401 | memcpy(SCtmp->sense_buffer, &ccb[mbo].cdb[ccb[mbo].cdblen], | |
b80ca4f7 | 402 | SCSI_SENSE_BUFFERSIZE); |
1da177e4 LT |
403 | |
404 | ||
405 | /* is there mail :-) */ | |
406 | ||
407 | /* more error checking left out here */ | |
408 | if (mbistatus != 1) | |
409 | /* This is surely wrong, but I don't know what's right */ | |
410 | errstatus = makecode(ccb[mbo].hastat, ccb[mbo].tarstat); | |
411 | else | |
412 | errstatus = 0; | |
413 | ||
414 | #ifdef DEBUG | |
415 | if (errstatus) | |
416 | printk(KERN_DEBUG "(aha1542 error:%x %x %x) ", errstatus, | |
417 | ccb[mbo].hastat, ccb[mbo].tarstat); | |
418 | #endif | |
419 | ||
420 | if (ccb[mbo].tarstat == 2) { | |
421 | #ifdef DEBUG | |
422 | int i; | |
423 | #endif | |
424 | DEB(printk("aha1542_intr_handle: sense:")); | |
425 | #ifdef DEBUG | |
426 | for (i = 0; i < 12; i++) | |
427 | printk("%02x ", ccb[mbo].cdb[ccb[mbo].cdblen + i]); | |
428 | printk("\n"); | |
429 | #endif | |
430 | /* | |
431 | DEB(printk("aha1542_intr_handle: buf:")); | |
432 | for (i = 0; i < bufflen; i++) | |
433 | printk("%02x ", ((unchar *)buff)[i]); | |
434 | printk("\n"); | |
435 | */ | |
436 | } | |
437 | DEB(if (errstatus) printk("aha1542_intr_handle: returning %6x\n", errstatus)); | |
438 | SCtmp->result = errstatus; | |
e98878f7 OZ |
439 | aha1542->SCint[mbo] = NULL; /* This effectively frees up the mailbox slot, as |
440 | far as queuecommand is concerned */ | |
1da177e4 LT |
441 | my_done(SCtmp); |
442 | number_serviced++; | |
443 | }; | |
444 | } | |
445 | ||
09a44833 OZ |
446 | /* A quick wrapper for do_aha1542_intr_handle to grab the spin lock */ |
447 | static irqreturn_t do_aha1542_intr_handle(int dummy, void *dev_id) | |
448 | { | |
449 | unsigned long flags; | |
450 | struct Scsi_Host *shost = dev_id; | |
451 | ||
452 | spin_lock_irqsave(shost->host_lock, flags); | |
453 | aha1542_intr_handle(shost); | |
454 | spin_unlock_irqrestore(shost->host_lock, flags); | |
455 | return IRQ_HANDLED; | |
456 | } | |
457 | ||
f281233d | 458 | static int aha1542_queuecommand_lck(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *)) |
1da177e4 | 459 | { |
e98878f7 | 460 | struct aha1542_hostdata *aha1542 = shost_priv(SCpnt->device->host); |
cb5b570c | 461 | u8 direction; |
cb5b570c OZ |
462 | u8 target = SCpnt->device->id; |
463 | u8 lun = SCpnt->device->lun; | |
1da177e4 | 464 | unsigned long flags; |
fc3fdfcc | 465 | int bufflen = scsi_bufflen(SCpnt); |
1da177e4 | 466 | int mbo; |
e98878f7 OZ |
467 | struct mailbox *mb = aha1542->mb; |
468 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 LT |
469 | |
470 | DEB(int i); | |
471 | ||
1da177e4 LT |
472 | DEB(if (target > 1) { |
473 | SCpnt->result = DID_TIME_OUT << 16; | |
474 | done(SCpnt); return 0; | |
475 | } | |
476 | ); | |
477 | ||
cad2fc72 | 478 | if (*SCpnt->cmnd == REQUEST_SENSE) { |
1da177e4 | 479 | /* Don't do the command - we have the sense data already */ |
1da177e4 LT |
480 | SCpnt->result = 0; |
481 | done(SCpnt); | |
482 | return 0; | |
483 | } | |
484 | #ifdef DEBUG | |
cad2fc72 OZ |
485 | if (*SCpnt->cmnd == READ_10 || *SCpnt->cmnd == WRITE_10) |
486 | i = xscsi2int(SCpnt->cmnd + 2); | |
487 | else if (*SCpnt->cmnd == READ_6 || *SCpnt->cmnd == WRITE_6) | |
488 | i = scsi2int(SCpnt->cmnd + 2); | |
1da177e4 LT |
489 | else |
490 | i = -1; | |
491 | if (done) | |
cad2fc72 | 492 | printk(KERN_DEBUG "aha1542_queuecommand: dev %d cmd %02x pos %d len %d ", target, *SCpnt->cmnd, i, bufflen); |
1da177e4 | 493 | else |
cad2fc72 | 494 | printk(KERN_DEBUG "aha1542_command: dev %d cmd %02x pos %d len %d ", target, *SCpnt->cmnd, i, bufflen); |
1da177e4 LT |
495 | printk(KERN_DEBUG "aha1542_queuecommand: dumping scsi cmd:"); |
496 | for (i = 0; i < SCpnt->cmd_len; i++) | |
cad2fc72 | 497 | printk("%02x ", SCpnt->cmnd[i]); |
1da177e4 | 498 | printk("\n"); |
cad2fc72 | 499 | if (*SCpnt->cmnd == WRITE_10 || *SCpnt->cmnd == WRITE_6) |
1da177e4 LT |
500 | return 0; /* we are still testing, so *don't* write */ |
501 | #endif | |
502 | /* Use the outgoing mailboxes in a round-robin fashion, because this | |
503 | is how the host adapter will scan for them */ | |
504 | ||
505 | spin_lock_irqsave(&aha1542_lock, flags); | |
e98878f7 | 506 | mbo = aha1542->aha1542_last_mbo_used + 1; |
1da177e4 LT |
507 | if (mbo >= AHA1542_MAILBOXES) |
508 | mbo = 0; | |
509 | ||
510 | do { | |
e98878f7 | 511 | if (mb[mbo].status == 0 && aha1542->SCint[mbo] == NULL) |
1da177e4 LT |
512 | break; |
513 | mbo++; | |
514 | if (mbo >= AHA1542_MAILBOXES) | |
515 | mbo = 0; | |
e98878f7 | 516 | } while (mbo != aha1542->aha1542_last_mbo_used); |
1da177e4 | 517 | |
e98878f7 | 518 | if (mb[mbo].status || aha1542->SCint[mbo]) |
1da177e4 LT |
519 | panic("Unable to find empty mailbox for aha1542.\n"); |
520 | ||
e98878f7 OZ |
521 | aha1542->SCint[mbo] = SCpnt; /* This will effectively prevent someone else from |
522 | screwing with this cdb. */ | |
1da177e4 | 523 | |
e98878f7 | 524 | aha1542->aha1542_last_mbo_used = mbo; |
1da177e4 LT |
525 | spin_unlock_irqrestore(&aha1542_lock, flags); |
526 | ||
527 | #ifdef DEBUG | |
528 | printk(KERN_DEBUG "Sending command (%d %x)...", mbo, done); | |
529 | #endif | |
530 | ||
10be6250 | 531 | any2scsi(mb[mbo].ccbptr, isa_virt_to_bus(&ccb[mbo])); /* This gets trashed for some reason */ |
1da177e4 LT |
532 | |
533 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
534 | ||
535 | ccb[mbo].cdblen = SCpnt->cmd_len; | |
536 | ||
537 | direction = 0; | |
cad2fc72 | 538 | if (*SCpnt->cmnd == READ_10 || *SCpnt->cmnd == READ_6) |
1da177e4 | 539 | direction = 8; |
cad2fc72 | 540 | else if (*SCpnt->cmnd == WRITE_10 || *SCpnt->cmnd == WRITE_6) |
1da177e4 LT |
541 | direction = 16; |
542 | ||
cad2fc72 | 543 | memcpy(ccb[mbo].cdb, SCpnt->cmnd, ccb[mbo].cdblen); |
1da177e4 | 544 | |
fc3fdfcc | 545 | if (bufflen) { |
51cf2249 | 546 | struct scatterlist *sg; |
1da177e4 LT |
547 | struct chain *cptr; |
548 | #ifdef DEBUG | |
549 | unsigned char *ptr; | |
550 | #endif | |
fc3fdfcc | 551 | int i, sg_count = scsi_sg_count(SCpnt); |
1da177e4 | 552 | ccb[mbo].op = 2; /* SCSI Initiator Command w/scatter-gather */ |
fc3fdfcc BH |
553 | SCpnt->host_scribble = kmalloc(sizeof(*cptr)*sg_count, |
554 | GFP_KERNEL | GFP_DMA); | |
1da177e4 LT |
555 | cptr = (struct chain *) SCpnt->host_scribble; |
556 | if (cptr == NULL) { | |
557 | /* free the claimed mailbox slot */ | |
e98878f7 | 558 | aha1542->SCint[mbo] = NULL; |
1da177e4 LT |
559 | return SCSI_MLQUEUE_HOST_BUSY; |
560 | } | |
fc3fdfcc | 561 | scsi_for_each_sg(SCpnt, sg, sg_count, i) { |
10be6250 OZ |
562 | any2scsi(cptr[i].dataptr, isa_page_to_bus(sg_page(sg)) |
563 | + sg->offset); | |
51cf2249 | 564 | any2scsi(cptr[i].datalen, sg->length); |
1da177e4 | 565 | }; |
fc3fdfcc | 566 | any2scsi(ccb[mbo].datalen, sg_count * sizeof(struct chain)); |
10be6250 | 567 | any2scsi(ccb[mbo].dataptr, isa_virt_to_bus(cptr)); |
1da177e4 LT |
568 | #ifdef DEBUG |
569 | printk("cptr %x: ", cptr); | |
570 | ptr = (unsigned char *) cptr; | |
571 | for (i = 0; i < 18; i++) | |
572 | printk("%02x ", ptr[i]); | |
573 | #endif | |
574 | } else { | |
575 | ccb[mbo].op = 0; /* SCSI Initiator Command */ | |
576 | SCpnt->host_scribble = NULL; | |
fc3fdfcc BH |
577 | any2scsi(ccb[mbo].datalen, 0); |
578 | any2scsi(ccb[mbo].dataptr, 0); | |
1da177e4 LT |
579 | }; |
580 | ccb[mbo].idlun = (target & 7) << 5 | direction | (lun & 7); /*SCSI Target Id */ | |
581 | ccb[mbo].rsalen = 16; | |
582 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
583 | ccb[mbo].commlinkid = 0; | |
584 | ||
585 | #ifdef DEBUG | |
586 | { | |
587 | int i; | |
588 | printk(KERN_DEBUG "aha1542_command: sending.. "); | |
589 | for (i = 0; i < sizeof(ccb[mbo]) - 10; i++) | |
cb5b570c | 590 | printk("%02x ", ((u8 *) &ccb[mbo])[i]); |
1da177e4 LT |
591 | }; |
592 | #endif | |
593 | ||
594 | if (done) { | |
f232d538 | 595 | DEB(printk("aha1542_queuecommand: now waiting for interrupt ")); |
1da177e4 LT |
596 | SCpnt->scsi_done = done; |
597 | mb[mbo].status = 1; | |
0c2b6481 | 598 | aha1542_outb(SCpnt->device->host->io_port, CMD_START_SCSI); |
1da177e4 LT |
599 | } else |
600 | printk("aha1542_queuecommand: done can't be NULL\n"); | |
601 | ||
602 | return 0; | |
603 | } | |
604 | ||
f281233d JG |
605 | static DEF_SCSI_QCMD(aha1542_queuecommand) |
606 | ||
1da177e4 LT |
607 | /* Initialize mailboxes */ |
608 | static void setup_mailboxes(int bse, struct Scsi_Host *shpnt) | |
609 | { | |
e98878f7 | 610 | struct aha1542_hostdata *aha1542 = shost_priv(shpnt); |
1da177e4 | 611 | int i; |
e98878f7 OZ |
612 | struct mailbox *mb = aha1542->mb; |
613 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 | 614 | |
cad2fc72 | 615 | u8 mb_cmd[5] = { CMD_MBINIT, AHA1542_MAILBOXES, 0, 0, 0}; |
1da177e4 | 616 | |
1da177e4 LT |
617 | for (i = 0; i < AHA1542_MAILBOXES; i++) { |
618 | mb[i].status = mb[AHA1542_MAILBOXES + i].status = 0; | |
10be6250 | 619 | any2scsi(mb[i].ccbptr, isa_virt_to_bus(&ccb[i])); |
1da177e4 LT |
620 | }; |
621 | aha1542_intr_reset(bse); /* reset interrupts, so they don't block */ | |
cad2fc72 OZ |
622 | any2scsi((mb_cmd + 2), isa_virt_to_bus(mb)); |
623 | if (aha1542_out(bse, mb_cmd, 5)) | |
1da177e4 | 624 | printk(KERN_ERR "aha1542_detect: failed setting up mailboxes\n"); |
1da177e4 LT |
625 | aha1542_intr_reset(bse); |
626 | } | |
627 | ||
3a70c006 | 628 | static int aha1542_getconfig(int base_io, unsigned int *irq_level, unsigned char *dma_chan, unsigned int *scsi_id) |
1da177e4 | 629 | { |
cb5b570c | 630 | u8 inquiry_result[3]; |
1da177e4 LT |
631 | int i; |
632 | i = inb(STATUS(base_io)); | |
633 | if (i & DF) { | |
634 | i = inb(DATA(base_io)); | |
635 | }; | |
0c2b6481 | 636 | aha1542_outb(base_io, CMD_RETCONF); |
f8846be3 | 637 | aha1542_in(base_io, inquiry_result, 3, 0); |
2093bfa1 | 638 | if (!wait_mask(INTRFLAGS(base_io), INTRMASK, HACC, 0, 0)) |
1da177e4 | 639 | printk(KERN_ERR "aha1542_detect: query board settings\n"); |
1da177e4 LT |
640 | aha1542_intr_reset(base_io); |
641 | switch (inquiry_result[0]) { | |
642 | case 0x80: | |
643 | *dma_chan = 7; | |
644 | break; | |
645 | case 0x40: | |
646 | *dma_chan = 6; | |
647 | break; | |
648 | case 0x20: | |
649 | *dma_chan = 5; | |
650 | break; | |
651 | case 0x01: | |
652 | *dma_chan = 0; | |
653 | break; | |
654 | case 0: | |
655 | /* This means that the adapter, although Adaptec 1542 compatible, doesn't use a DMA channel. | |
656 | Currently only aware of the BusLogic BT-445S VL-Bus adapter which needs this. */ | |
657 | *dma_chan = 0xFF; | |
658 | break; | |
659 | default: | |
660 | printk(KERN_ERR "Unable to determine Adaptec DMA priority. Disabling board\n"); | |
661 | return -1; | |
662 | }; | |
663 | switch (inquiry_result[1]) { | |
664 | case 0x40: | |
665 | *irq_level = 15; | |
666 | break; | |
667 | case 0x20: | |
668 | *irq_level = 14; | |
669 | break; | |
670 | case 0x8: | |
671 | *irq_level = 12; | |
672 | break; | |
673 | case 0x4: | |
674 | *irq_level = 11; | |
675 | break; | |
676 | case 0x2: | |
677 | *irq_level = 10; | |
678 | break; | |
679 | case 0x1: | |
680 | *irq_level = 9; | |
681 | break; | |
682 | default: | |
683 | printk(KERN_ERR "Unable to determine Adaptec IRQ level. Disabling board\n"); | |
684 | return -1; | |
685 | }; | |
686 | *scsi_id = inquiry_result[2] & 7; | |
687 | return 0; | |
688 | } | |
689 | ||
690 | /* This function should only be called for 1542C boards - we can detect | |
691 | the special firmware settings and unlock the board */ | |
692 | ||
643a7c43 | 693 | static int aha1542_mbenable(int base) |
1da177e4 | 694 | { |
cb5b570c OZ |
695 | static u8 mbenable_cmd[3]; |
696 | static u8 mbenable_result[2]; | |
1da177e4 LT |
697 | int retval; |
698 | ||
699 | retval = BIOS_TRANSLATION_6432; | |
700 | ||
0c2b6481 | 701 | aha1542_outb(base, CMD_EXTBIOS); |
f8846be3 | 702 | if (aha1542_in(base, mbenable_result, 2, 100)) |
1da177e4 | 703 | return retval; |
2093bfa1 OZ |
704 | if (!wait_mask(INTRFLAGS(base), INTRMASK, HACC, 0, 100)) |
705 | goto fail; | |
1da177e4 LT |
706 | aha1542_intr_reset(base); |
707 | ||
708 | if ((mbenable_result[0] & 0x08) || mbenable_result[1]) { | |
709 | mbenable_cmd[0] = CMD_MBENABLE; | |
710 | mbenable_cmd[1] = 0; | |
711 | mbenable_cmd[2] = mbenable_result[1]; | |
712 | ||
713 | if ((mbenable_result[0] & 0x08) && (mbenable_result[1] & 0x03)) | |
714 | retval = BIOS_TRANSLATION_25563; | |
715 | ||
23e6940a | 716 | if (aha1542_out(base, mbenable_cmd, 3)) |
2093bfa1 | 717 | goto fail; |
1da177e4 LT |
718 | }; |
719 | while (0) { | |
720 | fail: | |
721 | printk(KERN_ERR "aha1542_mbenable: Mailbox init failed\n"); | |
722 | } | |
723 | aha1542_intr_reset(base); | |
724 | return retval; | |
725 | } | |
726 | ||
727 | /* Query the board to find out if it is a 1542 or a 1740, or whatever. */ | |
643a7c43 | 728 | static int aha1542_query(int base_io, int *transl) |
1da177e4 | 729 | { |
cb5b570c | 730 | u8 inquiry_result[4]; |
1da177e4 LT |
731 | int i; |
732 | i = inb(STATUS(base_io)); | |
733 | if (i & DF) { | |
734 | i = inb(DATA(base_io)); | |
735 | }; | |
0c2b6481 | 736 | aha1542_outb(base_io, CMD_INQUIRY); |
f8846be3 | 737 | aha1542_in(base_io, inquiry_result, 4, 0); |
2093bfa1 | 738 | if (!wait_mask(INTRFLAGS(base_io), INTRMASK, HACC, 0, 0)) |
1da177e4 | 739 | printk(KERN_ERR "aha1542_detect: query card type\n"); |
1da177e4 LT |
740 | aha1542_intr_reset(base_io); |
741 | ||
742 | *transl = BIOS_TRANSLATION_6432; /* Default case */ | |
743 | ||
744 | /* For an AHA1740 series board, we ignore the board since there is a | |
745 | hardware bug which can lead to wrong blocks being returned if the board | |
746 | is operating in the 1542 emulation mode. Since there is an extended mode | |
747 | driver, we simply ignore the board and let the 1740 driver pick it up. | |
748 | */ | |
749 | ||
750 | if (inquiry_result[0] == 0x43) { | |
751 | printk(KERN_INFO "aha1542.c: Emulation mode not supported for AHA 174N hardware.\n"); | |
752 | return 1; | |
753 | }; | |
754 | ||
755 | /* Always call this - boards that do not support extended bios translation | |
756 | will ignore the command, and we will set the proper default */ | |
757 | ||
758 | *transl = aha1542_mbenable(base_io); | |
759 | ||
760 | return 0; | |
761 | } | |
762 | ||
f71429ab | 763 | static u8 dma_speed_hw(int dma_speed) |
1da177e4 | 764 | { |
f71429ab OZ |
765 | switch (dma_speed) { |
766 | case 5: | |
767 | return 0x00; | |
768 | case 6: | |
769 | return 0x04; | |
770 | case 7: | |
771 | return 0x01; | |
772 | case 8: | |
773 | return 0x02; | |
774 | case 10: | |
775 | return 0x03; | |
1da177e4 | 776 | } |
1da177e4 | 777 | |
f71429ab | 778 | return 0xff; /* invalid */ |
1da177e4 LT |
779 | } |
780 | ||
f71429ab OZ |
781 | /* Set the Bus on/off-times as not to ruin floppy performance */ |
782 | static void aha1542_set_bus_times(int indx) | |
1da177e4 | 783 | { |
f71429ab | 784 | unsigned int base_io = io[indx]; |
1da177e4 | 785 | |
f71429ab OZ |
786 | if (bus_on[indx] > 0) { |
787 | u8 oncmd[] = { CMD_BUSON_TIME, clamp(bus_on[indx], 2, 15) }; | |
1da177e4 | 788 | |
f71429ab OZ |
789 | aha1542_intr_reset(base_io); |
790 | if (aha1542_out(base_io, oncmd, 2)) | |
791 | goto fail; | |
792 | } | |
1da177e4 | 793 | |
f71429ab OZ |
794 | if (bus_off[indx] > 0) { |
795 | u8 offcmd[] = { CMD_BUSOFF_TIME, clamp(bus_off[indx], 1, 64) }; | |
1da177e4 | 796 | |
f71429ab OZ |
797 | aha1542_intr_reset(base_io); |
798 | if (aha1542_out(base_io, offcmd, 2)) | |
799 | goto fail; | |
800 | } | |
1da177e4 | 801 | |
f71429ab OZ |
802 | if (dma_speed_hw(dma_speed[indx]) != 0xff) { |
803 | u8 dmacmd[] = { CMD_DMASPEED, dma_speed_hw(dma_speed[indx]) }; | |
b847fd0d | 804 | |
b847fd0d | 805 | aha1542_intr_reset(base_io); |
23e6940a | 806 | if (aha1542_out(base_io, dmacmd, 2)) |
b847fd0d OZ |
807 | goto fail; |
808 | } | |
809 | aha1542_intr_reset(base_io); | |
810 | return; | |
811 | fail: | |
812 | printk(KERN_ERR "setting bus on/off-time failed\n"); | |
813 | aha1542_intr_reset(base_io); | |
814 | } | |
815 | ||
1da177e4 | 816 | /* return non-zero on detection */ |
643a7c43 | 817 | static struct Scsi_Host *aha1542_hw_init(struct scsi_host_template *tpnt, struct device *pdev, int indx) |
1da177e4 | 818 | { |
f71429ab | 819 | unsigned int base_io = io[indx]; |
3a70c006 | 820 | struct Scsi_Host *shpnt; |
e98878f7 | 821 | struct aha1542_hostdata *aha1542; |
1da177e4 | 822 | |
3a70c006 OZ |
823 | if (base_io == 0) |
824 | return NULL; | |
1da177e4 | 825 | |
3a70c006 OZ |
826 | if (!request_region(base_io, AHA1542_REGION_SIZE, "aha1542")) |
827 | return NULL; | |
1da177e4 | 828 | |
3a70c006 OZ |
829 | shpnt = scsi_host_alloc(tpnt, sizeof(struct aha1542_hostdata)); |
830 | if (!shpnt) | |
831 | goto release; | |
832 | aha1542 = shost_priv(shpnt); | |
b847fd0d | 833 | |
3a70c006 OZ |
834 | if (!aha1542_test_port(base_io, shpnt)) |
835 | goto unregister; | |
1da177e4 | 836 | |
3a70c006 OZ |
837 | aha1542_set_bus_times(indx); |
838 | if (aha1542_query(base_io, &aha1542->bios_translation)) | |
839 | goto unregister; | |
840 | if (aha1542_getconfig(base_io, &shpnt->irq, &shpnt->dma_channel, &shpnt->this_id) == -1) | |
841 | goto unregister; | |
1da177e4 | 842 | |
3a70c006 OZ |
843 | printk(KERN_INFO "Adaptec AHA-1542 (SCSI-ID %d) at IO 0x%x, IRQ %d", shpnt->this_id, base_io, shpnt->irq); |
844 | if (shpnt->dma_channel != 0xFF) | |
845 | printk(", DMA %d", shpnt->dma_channel); | |
846 | printk("\n"); | |
847 | if (aha1542->bios_translation == BIOS_TRANSLATION_25563) | |
848 | printk(KERN_INFO "aha1542.c: Using extended bios translation\n"); | |
1da177e4 | 849 | |
3a70c006 | 850 | setup_mailboxes(base_io, shpnt); |
1da177e4 | 851 | |
3a70c006 | 852 | if (request_irq(shpnt->irq, do_aha1542_intr_handle, 0, |
87c4d7bc | 853 | "aha1542", shpnt)) { |
3a70c006 OZ |
854 | printk(KERN_ERR "Unable to allocate IRQ for adaptec controller.\n"); |
855 | goto unregister; | |
856 | } | |
857 | if (shpnt->dma_channel != 0xFF) { | |
858 | if (request_dma(shpnt->dma_channel, "aha1542")) { | |
859 | printk(KERN_ERR "Unable to allocate DMA channel for Adaptec.\n"); | |
860 | goto free_irq; | |
861 | } | |
862 | if (shpnt->dma_channel == 0 || shpnt->dma_channel >= 5) { | |
863 | set_dma_mode(shpnt->dma_channel, DMA_MODE_CASCADE); | |
864 | enable_dma(shpnt->dma_channel); | |
865 | } | |
866 | } | |
1da177e4 | 867 | |
3a70c006 OZ |
868 | shpnt->unique_id = base_io; |
869 | shpnt->io_port = base_io; | |
870 | shpnt->n_io_port = AHA1542_REGION_SIZE; | |
871 | aha1542->aha1542_last_mbi_used = 2 * AHA1542_MAILBOXES - 1; | |
872 | aha1542->aha1542_last_mbo_used = AHA1542_MAILBOXES - 1; | |
1da177e4 | 873 | |
3a70c006 OZ |
874 | if (scsi_add_host(shpnt, pdev)) |
875 | goto free_dma; | |
1da177e4 | 876 | |
3a70c006 | 877 | scsi_scan_host(shpnt); |
1da177e4 | 878 | |
3a70c006 OZ |
879 | return shpnt; |
880 | free_dma: | |
881 | if (shpnt->dma_channel != 0xff) | |
882 | free_dma(shpnt->dma_channel); | |
883 | free_irq: | |
884 | free_irq(shpnt->irq, shpnt); | |
885 | unregister: | |
886 | scsi_host_put(shpnt); | |
887 | release: | |
888 | release_region(base_io, AHA1542_REGION_SIZE); | |
1da177e4 | 889 | |
643a7c43 | 890 | return NULL; |
1da177e4 LT |
891 | } |
892 | ||
893 | static int aha1542_release(struct Scsi_Host *shost) | |
894 | { | |
643a7c43 | 895 | scsi_remove_host(shost); |
1da177e4 LT |
896 | if (shost->dma_channel != 0xff) |
897 | free_dma(shost->dma_channel); | |
3a70c006 OZ |
898 | if (shost->irq) |
899 | free_irq(shost->irq, shost); | |
1da177e4 LT |
900 | if (shost->io_port && shost->n_io_port) |
901 | release_region(shost->io_port, shost->n_io_port); | |
643a7c43 | 902 | scsi_host_put(shost); |
1da177e4 LT |
903 | return 0; |
904 | } | |
905 | ||
1da177e4 | 906 | |
1da177e4 LT |
907 | /* |
908 | * This is a device reset. This is handled by sending a special command | |
909 | * to the device. | |
910 | */ | |
911 | static int aha1542_dev_reset(Scsi_Cmnd * SCpnt) | |
912 | { | |
e98878f7 | 913 | struct aha1542_hostdata *aha1542 = shost_priv(SCpnt->device->host); |
1da177e4 | 914 | unsigned long flags; |
e98878f7 | 915 | struct mailbox *mb = aha1542->mb; |
cb5b570c OZ |
916 | u8 target = SCpnt->device->id; |
917 | u8 lun = SCpnt->device->lun; | |
1da177e4 | 918 | int mbo; |
e98878f7 | 919 | struct ccb *ccb = aha1542->ccb; |
1da177e4 | 920 | |
1da177e4 | 921 | spin_lock_irqsave(&aha1542_lock, flags); |
e98878f7 | 922 | mbo = aha1542->aha1542_last_mbo_used + 1; |
1da177e4 LT |
923 | if (mbo >= AHA1542_MAILBOXES) |
924 | mbo = 0; | |
925 | ||
926 | do { | |
e98878f7 | 927 | if (mb[mbo].status == 0 && aha1542->SCint[mbo] == NULL) |
1da177e4 LT |
928 | break; |
929 | mbo++; | |
930 | if (mbo >= AHA1542_MAILBOXES) | |
931 | mbo = 0; | |
e98878f7 | 932 | } while (mbo != aha1542->aha1542_last_mbo_used); |
1da177e4 | 933 | |
e98878f7 | 934 | if (mb[mbo].status || aha1542->SCint[mbo]) |
1da177e4 LT |
935 | panic("Unable to find empty mailbox for aha1542.\n"); |
936 | ||
e98878f7 OZ |
937 | aha1542->SCint[mbo] = SCpnt; /* This will effectively |
938 | prevent someone else from | |
939 | screwing with this cdb. */ | |
1da177e4 | 940 | |
e98878f7 | 941 | aha1542->aha1542_last_mbo_used = mbo; |
1da177e4 LT |
942 | spin_unlock_irqrestore(&aha1542_lock, flags); |
943 | ||
10be6250 | 944 | any2scsi(mb[mbo].ccbptr, isa_virt_to_bus(&ccb[mbo])); /* This gets trashed for some reason */ |
1da177e4 LT |
945 | |
946 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
947 | ||
948 | ccb[mbo].op = 0x81; /* BUS DEVICE RESET */ | |
949 | ||
950 | ccb[mbo].idlun = (target & 7) << 5 | (lun & 7); /*SCSI Target Id */ | |
951 | ||
952 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
953 | ccb[mbo].commlinkid = 0; | |
954 | ||
955 | /* | |
956 | * Now tell the 1542 to flush all pending commands for this | |
957 | * target | |
958 | */ | |
0c2b6481 | 959 | aha1542_outb(SCpnt->device->host->io_port, CMD_START_SCSI); |
1da177e4 | 960 | |
017560fc JG |
961 | scmd_printk(KERN_WARNING, SCpnt, |
962 | "Trying device reset for target\n"); | |
1da177e4 LT |
963 | |
964 | return SUCCESS; | |
1da177e4 LT |
965 | } |
966 | ||
8537cba8 | 967 | static int aha1542_reset(Scsi_Cmnd *SCpnt, u8 reset_cmd) |
1da177e4 | 968 | { |
e98878f7 | 969 | struct aha1542_hostdata *aha1542 = shost_priv(SCpnt->device->host); |
1da177e4 LT |
970 | int i; |
971 | ||
972 | /* | |
973 | * This does a scsi reset for all devices on the bus. | |
974 | * In principle, we could also reset the 1542 - should | |
975 | * we do this? Try this first, and we can add that later | |
976 | * if it turns out to be useful. | |
977 | */ | |
8537cba8 | 978 | outb(reset_cmd, CONTROL(SCpnt->device->host->io_port)); |
1da177e4 LT |
979 | |
980 | /* | |
981 | * Wait for the thing to settle down a bit. Unfortunately | |
982 | * this is going to basically lock up the machine while we | |
983 | * wait for this to complete. To be 100% correct, we need to | |
984 | * check for timeout, and if we are doing something like this | |
985 | * we are pretty desperate anyways. | |
986 | */ | |
1da177e4 LT |
987 | ssleep(4); |
988 | spin_lock_irq(SCpnt->device->host->host_lock); | |
989 | ||
2093bfa1 | 990 | if (!wait_mask(STATUS(SCpnt->device->host->io_port), |
a13b3722 OZ |
991 | STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0)) { |
992 | spin_unlock_irq(SCpnt->device->host->host_lock); | |
993 | return FAILED; | |
994 | } | |
8537cba8 OZ |
995 | /* |
996 | * We need to do this too before the 1542 can interact with | |
997 | * us again after host reset. | |
998 | */ | |
999 | if (reset_cmd & HRST) | |
1000 | setup_mailboxes(SCpnt->device->host->io_port, SCpnt->device->host); | |
1da177e4 LT |
1001 | /* |
1002 | * Now try to pick up the pieces. For all pending commands, | |
1003 | * free any internal data structures, and basically clear things | |
1004 | * out. We do not try and restart any commands or anything - | |
1005 | * the strategy handler takes care of that crap. | |
1006 | */ | |
1007 | printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->device->host->host_no); | |
1008 | ||
1009 | for (i = 0; i < AHA1542_MAILBOXES; i++) { | |
e98878f7 | 1010 | if (aha1542->SCint[i] != NULL) { |
1da177e4 | 1011 | Scsi_Cmnd *SCtmp; |
e98878f7 | 1012 | SCtmp = aha1542->SCint[i]; |
1da177e4 | 1013 | |
1da177e4 LT |
1014 | if (SCtmp->device->soft_reset) { |
1015 | /* | |
1016 | * If this device implements the soft reset option, | |
1017 | * then it is still holding onto the command, and | |
1018 | * may yet complete it. In this case, we don't | |
1019 | * flush the data. | |
1020 | */ | |
1021 | continue; | |
1022 | } | |
c9475cb0 JJ |
1023 | kfree(SCtmp->host_scribble); |
1024 | SCtmp->host_scribble = NULL; | |
e98878f7 OZ |
1025 | aha1542->SCint[i] = NULL; |
1026 | aha1542->mb[i].status = 0; | |
1da177e4 LT |
1027 | } |
1028 | } | |
1029 | ||
68b3aa7c | 1030 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1da177e4 | 1031 | return SUCCESS; |
1da177e4 LT |
1032 | } |
1033 | ||
8537cba8 | 1034 | static int aha1542_bus_reset(Scsi_Cmnd *SCpnt) |
1da177e4 | 1035 | { |
8537cba8 OZ |
1036 | return aha1542_reset(SCpnt, SCRST); |
1037 | } | |
1da177e4 | 1038 | |
8537cba8 OZ |
1039 | static int aha1542_host_reset(Scsi_Cmnd *SCpnt) |
1040 | { | |
1041 | return aha1542_reset(SCpnt, HRST | SCRST); | |
1da177e4 LT |
1042 | } |
1043 | ||
1da177e4 | 1044 | static int aha1542_biosparam(struct scsi_device *sdev, |
17787a09 | 1045 | struct block_device *bdev, sector_t capacity, int geom[]) |
1da177e4 | 1046 | { |
e98878f7 | 1047 | struct aha1542_hostdata *aha1542 = shost_priv(sdev->host); |
1da177e4 | 1048 | |
17787a09 OZ |
1049 | if (capacity >= 0x200000 && |
1050 | aha1542->bios_translation == BIOS_TRANSLATION_25563) { | |
1da177e4 | 1051 | /* Please verify that this is the same as what DOS returns */ |
17787a09 OZ |
1052 | geom[0] = 255; /* heads */ |
1053 | geom[1] = 63; /* sectors */ | |
1da177e4 | 1054 | } else { |
17787a09 OZ |
1055 | geom[0] = 64; /* heads */ |
1056 | geom[1] = 32; /* sectors */ | |
1da177e4 | 1057 | } |
17787a09 | 1058 | geom[2] = sector_div(capacity, geom[0] * geom[1]); /* cylinders */ |
1da177e4 LT |
1059 | |
1060 | return 0; | |
1061 | } | |
1062 | MODULE_LICENSE("GPL"); | |
1063 | ||
d0be4a7d | 1064 | static struct scsi_host_template driver_template = { |
643a7c43 | 1065 | .module = THIS_MODULE, |
1da177e4 LT |
1066 | .proc_name = "aha1542", |
1067 | .name = "Adaptec 1542", | |
1da177e4 | 1068 | .queuecommand = aha1542_queuecommand, |
1da177e4 LT |
1069 | .eh_device_reset_handler= aha1542_dev_reset, |
1070 | .eh_bus_reset_handler = aha1542_bus_reset, | |
1071 | .eh_host_reset_handler = aha1542_host_reset, | |
1072 | .bios_param = aha1542_biosparam, | |
1073 | .can_queue = AHA1542_MAILBOXES, | |
1074 | .this_id = 7, | |
10be6250 OZ |
1075 | .sg_tablesize = 16, |
1076 | .cmd_per_lun = 1, | |
1da177e4 LT |
1077 | .unchecked_isa_dma = 1, |
1078 | .use_clustering = ENABLE_CLUSTERING, | |
1079 | }; | |
643a7c43 OZ |
1080 | |
1081 | static int aha1542_isa_match(struct device *pdev, unsigned int ndev) | |
1082 | { | |
1083 | struct Scsi_Host *sh = aha1542_hw_init(&driver_template, pdev, ndev); | |
1084 | ||
1085 | if (!sh) | |
1086 | return 0; | |
1087 | ||
1088 | dev_set_drvdata(pdev, sh); | |
1089 | return 1; | |
1090 | } | |
1091 | ||
1092 | static int aha1542_isa_remove(struct device *pdev, | |
1093 | unsigned int ndev) | |
1094 | { | |
1095 | aha1542_release(dev_get_drvdata(pdev)); | |
1096 | dev_set_drvdata(pdev, NULL); | |
1097 | return 0; | |
1098 | } | |
1099 | ||
1100 | static struct isa_driver aha1542_isa_driver = { | |
1101 | .match = aha1542_isa_match, | |
1102 | .remove = aha1542_isa_remove, | |
1103 | .driver = { | |
1104 | .name = "aha1542" | |
1105 | }, | |
1106 | }; | |
1107 | static int isa_registered; | |
1108 | ||
1109 | #ifdef CONFIG_PNP | |
1110 | static struct pnp_device_id aha1542_pnp_ids[] = { | |
1111 | { .id = "ADP1542" }, | |
1112 | { .id = "" } | |
1113 | }; | |
1114 | MODULE_DEVICE_TABLE(pnp, aha1542_pnp_ids); | |
1115 | ||
1116 | static int aha1542_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *id) | |
1117 | { | |
1118 | int indx; | |
1119 | struct Scsi_Host *sh; | |
1120 | ||
f71429ab OZ |
1121 | for (indx = 0; indx < ARRAY_SIZE(io); indx++) { |
1122 | if (io[indx]) | |
643a7c43 OZ |
1123 | continue; |
1124 | ||
1125 | if (pnp_activate_dev(pdev) < 0) | |
1126 | continue; | |
1127 | ||
f71429ab | 1128 | io[indx] = pnp_port_start(pdev, 0); |
643a7c43 OZ |
1129 | |
1130 | /* The card can be queried for its DMA, we have | |
1131 | the DMA set up that is enough */ | |
1132 | ||
f71429ab | 1133 | printk(KERN_INFO "ISAPnP found an AHA1535 at I/O 0x%03X\n", io[indx]); |
643a7c43 OZ |
1134 | } |
1135 | ||
1136 | sh = aha1542_hw_init(&driver_template, &pdev->dev, indx); | |
1137 | if (!sh) | |
1138 | return -ENODEV; | |
1139 | ||
1140 | pnp_set_drvdata(pdev, sh); | |
1141 | return 0; | |
1142 | } | |
1143 | ||
1144 | static void aha1542_pnp_remove(struct pnp_dev *pdev) | |
1145 | { | |
1146 | aha1542_release(pnp_get_drvdata(pdev)); | |
1147 | pnp_set_drvdata(pdev, NULL); | |
1148 | } | |
1149 | ||
1150 | static struct pnp_driver aha1542_pnp_driver = { | |
1151 | .name = "aha1542", | |
1152 | .id_table = aha1542_pnp_ids, | |
1153 | .probe = aha1542_pnp_probe, | |
1154 | .remove = aha1542_pnp_remove, | |
1155 | }; | |
1156 | static int pnp_registered; | |
1157 | #endif /* CONFIG_PNP */ | |
1158 | ||
1159 | static int __init aha1542_init(void) | |
1160 | { | |
1161 | int ret = 0; | |
643a7c43 OZ |
1162 | |
1163 | #ifdef CONFIG_PNP | |
1164 | if (isapnp) { | |
1165 | ret = pnp_register_driver(&aha1542_pnp_driver); | |
1166 | if (!ret) | |
1167 | pnp_registered = 1; | |
1168 | } | |
1169 | #endif | |
1170 | ret = isa_register_driver(&aha1542_isa_driver, MAXBOARDS); | |
1171 | if (!ret) | |
1172 | isa_registered = 1; | |
1173 | ||
1174 | #ifdef CONFIG_PNP | |
1175 | if (pnp_registered) | |
1176 | ret = 0; | |
1177 | #endif | |
1178 | if (isa_registered) | |
1179 | ret = 0; | |
1180 | ||
1181 | return ret; | |
1182 | } | |
1183 | ||
1184 | static void __exit aha1542_exit(void) | |
1185 | { | |
1186 | #ifdef CONFIG_PNP | |
1187 | if (pnp_registered) | |
1188 | pnp_unregister_driver(&aha1542_pnp_driver); | |
1189 | #endif | |
1190 | if (isa_registered) | |
1191 | isa_unregister_driver(&aha1542_isa_driver); | |
1192 | } | |
1193 | ||
1194 | module_init(aha1542_init); | |
1195 | module_exit(aha1542_exit); |