Commit | Line | Data |
---|---|---|
1d084d20 OZ |
1 | /* |
2 | * Driver for Adaptec AHA-1542 SCSI host adapters | |
1da177e4 LT |
3 | * |
4 | * Copyright (C) 1992 Tommy Thorn | |
5 | * Copyright (C) 1993, 1994, 1995 Eric Youngdale | |
1d084d20 | 6 | * Copyright (C) 2015 Ondrej Zary |
1da177e4 LT |
7 | */ |
8 | ||
1da177e4 LT |
9 | #include <linux/module.h> |
10 | #include <linux/interrupt.h> | |
11 | #include <linux/kernel.h> | |
12 | #include <linux/types.h> | |
13 | #include <linux/string.h> | |
1da177e4 | 14 | #include <linux/delay.h> |
1da177e4 LT |
15 | #include <linux/init.h> |
16 | #include <linux/spinlock.h> | |
643a7c43 OZ |
17 | #include <linux/isa.h> |
18 | #include <linux/pnp.h> | |
5a0e3ad6 | 19 | #include <linux/slab.h> |
954a9fd7 | 20 | #include <linux/io.h> |
1da177e4 | 21 | #include <asm/dma.h> |
954a9fd7 OZ |
22 | #include <scsi/scsi_cmnd.h> |
23 | #include <scsi/scsi_device.h> | |
1da177e4 LT |
24 | #include <scsi/scsi_host.h> |
25 | #include "aha1542.h" | |
1da177e4 LT |
26 | |
27 | #ifdef DEBUG | |
28 | #define DEB(x) x | |
29 | #else | |
30 | #define DEB(x) | |
31 | #endif | |
f71429ab | 32 | #define MAXBOARDS 4 |
1da177e4 | 33 | |
f71429ab OZ |
34 | static bool isapnp = 1; |
35 | module_param(isapnp, bool, 0); | |
36 | MODULE_PARM_DESC(isapnp, "enable PnP support (default=1)"); | |
1da177e4 | 37 | |
f71429ab OZ |
38 | static int io[MAXBOARDS] = { 0x330, 0x334, 0, 0 }; |
39 | module_param_array(io, int, NULL, 0); | |
40 | MODULE_PARM_DESC(io, "base IO address of controller (0x130,0x134,0x230,0x234,0x330,0x334, default=0x330,0x334)"); | |
1da177e4 | 41 | |
f71429ab OZ |
42 | /* time AHA spends on the AT-bus during data transfer */ |
43 | static int bus_on[MAXBOARDS] = { -1, -1, -1, -1 }; /* power-on default: 11us */ | |
44 | module_param_array(bus_on, int, NULL, 0); | |
45 | MODULE_PARM_DESC(bus_on, "bus on time [us] (2-15, default=-1 [HW default: 11])"); | |
1da177e4 | 46 | |
f71429ab OZ |
47 | /* time AHA spends off the bus (not to monopolize it) during data transfer */ |
48 | static int bus_off[MAXBOARDS] = { -1, -1, -1, -1 }; /* power-on default: 4us */ | |
49 | module_param_array(bus_off, int, NULL, 0); | |
50 | MODULE_PARM_DESC(bus_off, "bus off time [us] (1-64, default=-1 [HW default: 4])"); | |
1da177e4 | 51 | |
f71429ab OZ |
52 | /* default is jumper selected (J1 on 1542A), factory default = 5 MB/s */ |
53 | static int dma_speed[MAXBOARDS] = { -1, -1, -1, -1 }; | |
54 | module_param_array(dma_speed, int, NULL, 0); | |
55 | MODULE_PARM_DESC(dma_speed, "DMA speed [MB/s] (5,6,7,8,10, default=-1 [by jumper])"); | |
1da177e4 | 56 | |
1da177e4 LT |
57 | #define BIOS_TRANSLATION_6432 1 /* Default case these days */ |
58 | #define BIOS_TRANSLATION_25563 2 /* Big disk case */ | |
59 | ||
60 | struct aha1542_hostdata { | |
61 | /* This will effectively start both of them at the first mailbox */ | |
62 | int bios_translation; /* Mapping bios uses - for compatibility */ | |
63 | int aha1542_last_mbi_used; | |
64 | int aha1542_last_mbo_used; | |
55b28f9f | 65 | struct scsi_cmnd *int_cmds[AHA1542_MAILBOXES]; |
1da177e4 LT |
66 | struct mailbox mb[2 * AHA1542_MAILBOXES]; |
67 | struct ccb ccb[AHA1542_MAILBOXES]; | |
68 | }; | |
69 | ||
1da177e4 LT |
70 | static DEFINE_SPINLOCK(aha1542_lock); |
71 | ||
f1bbef63 OZ |
72 | static inline void aha1542_intr_reset(u16 base) |
73 | { | |
74 | outb(IRST, CONTROL(base)); | |
75 | } | |
1da177e4 | 76 | |
2093bfa1 OZ |
77 | static inline bool wait_mask(u16 port, u8 mask, u8 allof, u8 noneof, int timeout) |
78 | { | |
79 | bool delayed = true; | |
80 | ||
81 | if (timeout == 0) { | |
82 | timeout = 3000000; | |
83 | delayed = false; | |
84 | } | |
85 | ||
86 | while (1) { | |
87 | u8 bits = inb(port) & mask; | |
88 | if ((bits & allof) == allof && ((bits & noneof) == 0)) | |
89 | break; | |
90 | if (delayed) | |
91 | mdelay(1); | |
92 | if (--timeout == 0) | |
93 | return false; | |
94 | } | |
95 | ||
96 | return true; | |
97 | } | |
1da177e4 | 98 | |
1da177e4 LT |
99 | /* This is a bit complicated, but we need to make sure that an interrupt |
100 | routine does not send something out while we are in the middle of this. | |
101 | Fortunately, it is only at boot time that multi-byte messages | |
102 | are ever sent. */ | |
cad2fc72 | 103 | static int aha1542_outb(unsigned int base, u8 val) |
1da177e4 | 104 | { |
0c2b6481 OZ |
105 | unsigned long flags; |
106 | ||
107 | while (1) { | |
2906b3ce | 108 | if (!wait_mask(STATUS(base), CDF, 0, CDF, 0)) |
0c2b6481 | 109 | return 1; |
1da177e4 | 110 | spin_lock_irqsave(&aha1542_lock, flags); |
0c2b6481 OZ |
111 | if (inb(STATUS(base)) & CDF) { |
112 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
113 | continue; | |
1da177e4 | 114 | } |
cad2fc72 | 115 | outb(val, DATA(base)); |
1da177e4 | 116 | spin_unlock_irqrestore(&aha1542_lock, flags); |
0c2b6481 | 117 | return 0; |
1da177e4 | 118 | } |
0c2b6481 OZ |
119 | } |
120 | ||
cad2fc72 | 121 | static int aha1542_out(unsigned int base, u8 *buf, int len) |
0c2b6481 OZ |
122 | { |
123 | unsigned long flags; | |
124 | ||
125 | spin_lock_irqsave(&aha1542_lock, flags); | |
126 | while (len--) { | |
127 | if (!wait_mask(STATUS(base), CDF, 0, CDF, 0)) { | |
128 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
0c2b6481 OZ |
129 | return 1; |
130 | } | |
cad2fc72 | 131 | outb(*buf++, DATA(base)); |
0c2b6481 OZ |
132 | } |
133 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
23e6940a OZ |
134 | if (!wait_mask(INTRFLAGS(base), INTRMASK, HACC, 0, 0)) |
135 | return 1; | |
0c2b6481 | 136 | |
1da177e4 | 137 | return 0; |
1da177e4 LT |
138 | } |
139 | ||
140 | /* Only used at boot time, so we do not need to worry about latency as much | |
141 | here */ | |
142 | ||
cad2fc72 | 143 | static int aha1542_in(unsigned int base, u8 *buf, int len, int timeout) |
1da177e4 LT |
144 | { |
145 | unsigned long flags; | |
146 | ||
147 | spin_lock_irqsave(&aha1542_lock, flags); | |
148 | while (len--) { | |
a13b3722 OZ |
149 | if (!wait_mask(STATUS(base), DF, DF, 0, timeout)) { |
150 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
a13b3722 OZ |
151 | return 1; |
152 | } | |
cad2fc72 | 153 | *buf++ = inb(DATA(base)); |
1da177e4 LT |
154 | } |
155 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
156 | return 0; | |
1da177e4 LT |
157 | } |
158 | ||
159 | static int makecode(unsigned hosterr, unsigned scsierr) | |
160 | { | |
161 | switch (hosterr) { | |
162 | case 0x0: | |
163 | case 0xa: /* Linked command complete without error and linked normally */ | |
164 | case 0xb: /* Linked command complete without error, interrupt generated */ | |
165 | hosterr = 0; | |
166 | break; | |
167 | ||
168 | case 0x11: /* Selection time out-The initiator selection or target | |
169 | reselection was not complete within the SCSI Time out period */ | |
170 | hosterr = DID_TIME_OUT; | |
171 | break; | |
172 | ||
173 | case 0x12: /* Data overrun/underrun-The target attempted to transfer more data | |
174 | than was allocated by the Data Length field or the sum of the | |
175 | Scatter / Gather Data Length fields. */ | |
176 | ||
177 | case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */ | |
178 | ||
179 | case 0x15: /* MBO command was not 00, 01 or 02-The first byte of the CB was | |
180 | invalid. This usually indicates a software failure. */ | |
181 | ||
182 | case 0x16: /* Invalid CCB Operation Code-The first byte of the CCB was invalid. | |
183 | This usually indicates a software failure. */ | |
184 | ||
185 | case 0x17: /* Linked CCB does not have the same LUN-A subsequent CCB of a set | |
186 | of linked CCB's does not specify the same logical unit number as | |
187 | the first. */ | |
188 | case 0x18: /* Invalid Target Direction received from Host-The direction of a | |
189 | Target Mode CCB was invalid. */ | |
190 | ||
191 | case 0x19: /* Duplicate CCB Received in Target Mode-More than once CCB was | |
192 | received to service data transfer between the same target LUN | |
193 | and initiator SCSI ID in the same direction. */ | |
194 | ||
195 | case 0x1a: /* Invalid CCB or Segment List Parameter-A segment list with a zero | |
196 | length segment or invalid segment list boundaries was received. | |
197 | A CCB parameter was invalid. */ | |
198 | DEB(printk("Aha1542: %x %x\n", hosterr, scsierr)); | |
199 | hosterr = DID_ERROR; /* Couldn't find any better */ | |
200 | break; | |
201 | ||
202 | case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus | |
203 | phase sequence was requested by the target. The host adapter | |
204 | will generate a SCSI Reset Condition, notifying the host with | |
205 | a SCRD interrupt */ | |
206 | hosterr = DID_RESET; | |
207 | break; | |
208 | default: | |
209 | printk(KERN_ERR "aha1542: makecode: unknown hoststatus %x\n", hosterr); | |
210 | break; | |
211 | } | |
212 | return scsierr | (hosterr << 16); | |
213 | } | |
214 | ||
68ea9de3 | 215 | static int aha1542_test_port(struct Scsi_Host *sh) |
1da177e4 | 216 | { |
cb5b570c | 217 | u8 inquiry_result[4]; |
cad2fc72 | 218 | int i; |
1da177e4 LT |
219 | |
220 | /* Quick and dirty test for presence of the card. */ | |
68ea9de3 | 221 | if (inb(STATUS(sh->io_port)) == 0xff) |
1da177e4 LT |
222 | return 0; |
223 | ||
224 | /* Reset the adapter. I ought to make a hard reset, but it's not really necessary */ | |
225 | ||
1da177e4 | 226 | /* In case some other card was probing here, reset interrupts */ |
68ea9de3 | 227 | aha1542_intr_reset(sh->io_port); /* reset interrupts, so they don't block */ |
1da177e4 | 228 | |
68ea9de3 | 229 | outb(SRST | IRST /*|SCRST */ , CONTROL(sh->io_port)); |
1da177e4 LT |
230 | |
231 | mdelay(20); /* Wait a little bit for things to settle down. */ | |
232 | ||
1da177e4 | 233 | /* Expect INIT and IDLE, any of the others are bad */ |
68ea9de3 | 234 | if (!wait_mask(STATUS(sh->io_port), STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0)) |
a13b3722 | 235 | return 0; |
1da177e4 | 236 | |
1da177e4 | 237 | /* Shouldn't have generated any interrupts during reset */ |
68ea9de3 | 238 | if (inb(INTRFLAGS(sh->io_port)) & INTRMASK) |
a13b3722 | 239 | return 0; |
1da177e4 | 240 | |
1da177e4 LT |
241 | /* Perform a host adapter inquiry instead so we do not need to set |
242 | up the mailboxes ahead of time */ | |
243 | ||
68ea9de3 | 244 | aha1542_outb(sh->io_port, CMD_INQUIRY); |
1da177e4 | 245 | |
cad2fc72 | 246 | for (i = 0; i < 4; i++) { |
68ea9de3 | 247 | if (!wait_mask(STATUS(sh->io_port), DF, DF, 0, 0)) |
a13b3722 | 248 | return 0; |
68ea9de3 | 249 | inquiry_result[i] = inb(DATA(sh->io_port)); |
1da177e4 LT |
250 | } |
251 | ||
1da177e4 | 252 | /* Reading port should reset DF */ |
68ea9de3 | 253 | if (inb(STATUS(sh->io_port)) & DF) |
a13b3722 | 254 | return 0; |
1da177e4 | 255 | |
1da177e4 | 256 | /* When HACC, command is completed, and we're though testing */ |
68ea9de3 | 257 | if (!wait_mask(INTRFLAGS(sh->io_port), HACC, HACC, 0, 0)) |
a13b3722 | 258 | return 0; |
1da177e4 | 259 | |
1da177e4 | 260 | /* Clear interrupts */ |
68ea9de3 | 261 | outb(IRST, CONTROL(sh->io_port)); |
1da177e4 | 262 | |
bdebe224 | 263 | return 1; |
1da177e4 LT |
264 | } |
265 | ||
1da177e4 | 266 | /* A "high" level interrupt handler */ |
c2532f68 | 267 | static void aha1542_intr_handle(struct Scsi_Host *sh) |
1da177e4 | 268 | { |
c2532f68 | 269 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
55b28f9f | 270 | void (*my_done)(struct scsi_cmnd *) = NULL; |
1da177e4 LT |
271 | int errstatus, mbi, mbo, mbistatus; |
272 | int number_serviced; | |
273 | unsigned long flags; | |
55b28f9f | 274 | struct scsi_cmnd *tmp_cmd; |
1da177e4 | 275 | int flag; |
e98878f7 OZ |
276 | struct mailbox *mb = aha1542->mb; |
277 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 LT |
278 | |
279 | #ifdef DEBUG | |
280 | { | |
c2532f68 | 281 | flag = inb(INTRFLAGS(sh->io_port)); |
2906b3ce | 282 | shost_printk(KERN_DEBUG, sh, "aha1542_intr_handle: "); |
1da177e4 LT |
283 | if (!(flag & ANYINTR)) |
284 | printk("no interrupt?"); | |
285 | if (flag & MBIF) | |
286 | printk("MBIF "); | |
287 | if (flag & MBOA) | |
288 | printk("MBOF "); | |
289 | if (flag & HACC) | |
290 | printk("HACC "); | |
291 | if (flag & SCRD) | |
292 | printk("SCRD "); | |
c2532f68 | 293 | printk("status %02x\n", inb(STATUS(sh->io_port))); |
1da177e4 LT |
294 | }; |
295 | #endif | |
296 | number_serviced = 0; | |
1da177e4 LT |
297 | |
298 | while (1 == 1) { | |
c2532f68 | 299 | flag = inb(INTRFLAGS(sh->io_port)); |
1da177e4 LT |
300 | |
301 | /* Check for unusual interrupts. If any of these happen, we should | |
302 | probably do something special, but for now just printing a message | |
303 | is sufficient. A SCSI reset detected is something that we really | |
304 | need to deal with in some way. */ | |
305 | if (flag & ~MBIF) { | |
306 | if (flag & MBOA) | |
307 | printk("MBOF "); | |
308 | if (flag & HACC) | |
309 | printk("HACC "); | |
dfd7c991 | 310 | if (flag & SCRD) |
1da177e4 | 311 | printk("SCRD "); |
1da177e4 | 312 | } |
c2532f68 | 313 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
314 | |
315 | spin_lock_irqsave(&aha1542_lock, flags); | |
e98878f7 | 316 | mbi = aha1542->aha1542_last_mbi_used + 1; |
1da177e4 LT |
317 | if (mbi >= 2 * AHA1542_MAILBOXES) |
318 | mbi = AHA1542_MAILBOXES; | |
319 | ||
320 | do { | |
321 | if (mb[mbi].status != 0) | |
322 | break; | |
323 | mbi++; | |
324 | if (mbi >= 2 * AHA1542_MAILBOXES) | |
325 | mbi = AHA1542_MAILBOXES; | |
e98878f7 | 326 | } while (mbi != aha1542->aha1542_last_mbi_used); |
1da177e4 LT |
327 | |
328 | if (mb[mbi].status == 0) { | |
329 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
330 | /* Hmm, no mail. Must have read it the last time around */ | |
dfd7c991 | 331 | if (!number_serviced) |
2906b3ce | 332 | shost_printk(KERN_WARNING, sh, "interrupt received, but no mail.\n"); |
1da177e4 LT |
333 | return; |
334 | }; | |
335 | ||
10be6250 | 336 | mbo = (scsi2int(mb[mbi].ccbptr) - (isa_virt_to_bus(&ccb[0]))) / sizeof(struct ccb); |
1da177e4 LT |
337 | mbistatus = mb[mbi].status; |
338 | mb[mbi].status = 0; | |
e98878f7 | 339 | aha1542->aha1542_last_mbi_used = mbi; |
1da177e4 LT |
340 | spin_unlock_irqrestore(&aha1542_lock, flags); |
341 | ||
342 | #ifdef DEBUG | |
343 | { | |
344 | if (ccb[mbo].tarstat | ccb[mbo].hastat) | |
2906b3ce | 345 | shost_printk(KERN_DEBUG, sh, "aha1542_command: returning %x (status %d)\n", |
1da177e4 LT |
346 | ccb[mbo].tarstat + ((int) ccb[mbo].hastat << 16), mb[mbi].status); |
347 | }; | |
348 | #endif | |
349 | ||
350 | if (mbistatus == 3) | |
351 | continue; /* Aborted command not found */ | |
352 | ||
353 | #ifdef DEBUG | |
2906b3ce | 354 | shost_printk(KERN_DEBUG, sh, "...done %d %d\n", mbo, mbi); |
1da177e4 LT |
355 | #endif |
356 | ||
55b28f9f | 357 | tmp_cmd = aha1542->int_cmds[mbo]; |
1da177e4 | 358 | |
55b28f9f | 359 | if (!tmp_cmd || !tmp_cmd->scsi_done) { |
2906b3ce OZ |
360 | shost_printk(KERN_WARNING, sh, "Unexpected interrupt\n"); |
361 | shost_printk(KERN_WARNING, sh, "tarstat=%x, hastat=%x idlun=%x ccb#=%d\n", ccb[mbo].tarstat, | |
1da177e4 LT |
362 | ccb[mbo].hastat, ccb[mbo].idlun, mbo); |
363 | return; | |
364 | } | |
55b28f9f OZ |
365 | my_done = tmp_cmd->scsi_done; |
366 | kfree(tmp_cmd->host_scribble); | |
367 | tmp_cmd->host_scribble = NULL; | |
1da177e4 LT |
368 | /* Fetch the sense data, and tuck it away, in the required slot. The |
369 | Adaptec automatically fetches it, and there is no guarantee that | |
370 | we will still have it in the cdb when we come back */ | |
371 | if (ccb[mbo].tarstat == 2) | |
55b28f9f | 372 | memcpy(tmp_cmd->sense_buffer, &ccb[mbo].cdb[ccb[mbo].cdblen], |
b80ca4f7 | 373 | SCSI_SENSE_BUFFERSIZE); |
1da177e4 LT |
374 | |
375 | ||
376 | /* is there mail :-) */ | |
377 | ||
378 | /* more error checking left out here */ | |
379 | if (mbistatus != 1) | |
380 | /* This is surely wrong, but I don't know what's right */ | |
381 | errstatus = makecode(ccb[mbo].hastat, ccb[mbo].tarstat); | |
382 | else | |
383 | errstatus = 0; | |
384 | ||
385 | #ifdef DEBUG | |
386 | if (errstatus) | |
2906b3ce | 387 | shost_printk(KERN_DEBUG, sh, "(aha1542 error:%x %x %x) ", errstatus, |
1da177e4 LT |
388 | ccb[mbo].hastat, ccb[mbo].tarstat); |
389 | #endif | |
390 | ||
391 | if (ccb[mbo].tarstat == 2) { | |
392 | #ifdef DEBUG | |
393 | int i; | |
394 | #endif | |
395 | DEB(printk("aha1542_intr_handle: sense:")); | |
396 | #ifdef DEBUG | |
397 | for (i = 0; i < 12; i++) | |
398 | printk("%02x ", ccb[mbo].cdb[ccb[mbo].cdblen + i]); | |
399 | printk("\n"); | |
400 | #endif | |
401 | /* | |
402 | DEB(printk("aha1542_intr_handle: buf:")); | |
403 | for (i = 0; i < bufflen; i++) | |
404 | printk("%02x ", ((unchar *)buff)[i]); | |
405 | printk("\n"); | |
406 | */ | |
407 | } | |
408 | DEB(if (errstatus) printk("aha1542_intr_handle: returning %6x\n", errstatus)); | |
55b28f9f OZ |
409 | tmp_cmd->result = errstatus; |
410 | aha1542->int_cmds[mbo] = NULL; /* This effectively frees up the mailbox slot, as | |
e98878f7 | 411 | far as queuecommand is concerned */ |
55b28f9f | 412 | my_done(tmp_cmd); |
1da177e4 LT |
413 | number_serviced++; |
414 | }; | |
415 | } | |
416 | ||
09a44833 OZ |
417 | /* A quick wrapper for do_aha1542_intr_handle to grab the spin lock */ |
418 | static irqreturn_t do_aha1542_intr_handle(int dummy, void *dev_id) | |
419 | { | |
420 | unsigned long flags; | |
c2532f68 | 421 | struct Scsi_Host *sh = dev_id; |
09a44833 | 422 | |
c2532f68 OZ |
423 | spin_lock_irqsave(sh->host_lock, flags); |
424 | aha1542_intr_handle(sh); | |
425 | spin_unlock_irqrestore(sh->host_lock, flags); | |
09a44833 OZ |
426 | return IRQ_HANDLED; |
427 | } | |
428 | ||
55b28f9f | 429 | static int aha1542_queuecommand_lck(struct scsi_cmnd *cmd, void (*done) (struct scsi_cmnd *)) |
1da177e4 | 430 | { |
2906b3ce OZ |
431 | struct Scsi_Host *sh = cmd->device->host; |
432 | struct aha1542_hostdata *aha1542 = shost_priv(sh); | |
cb5b570c | 433 | u8 direction; |
55b28f9f OZ |
434 | u8 target = cmd->device->id; |
435 | u8 lun = cmd->device->lun; | |
1da177e4 | 436 | unsigned long flags; |
55b28f9f | 437 | int bufflen = scsi_bufflen(cmd); |
1da177e4 | 438 | int mbo; |
e98878f7 OZ |
439 | struct mailbox *mb = aha1542->mb; |
440 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 LT |
441 | |
442 | DEB(int i); | |
443 | ||
1da177e4 | 444 | DEB(if (target > 1) { |
55b28f9f OZ |
445 | cmd->result = DID_TIME_OUT << 16; |
446 | done(cmd); return 0; | |
1da177e4 LT |
447 | } |
448 | ); | |
449 | ||
55b28f9f | 450 | if (*cmd->cmnd == REQUEST_SENSE) { |
1da177e4 | 451 | /* Don't do the command - we have the sense data already */ |
55b28f9f OZ |
452 | cmd->result = 0; |
453 | done(cmd); | |
1da177e4 LT |
454 | return 0; |
455 | } | |
456 | #ifdef DEBUG | |
55b28f9f OZ |
457 | if (*cmd->cmnd == READ_10 || *cmd->cmnd == WRITE_10) |
458 | i = xscsi2int(cmd->cmnd + 2); | |
459 | else if (*cmd->cmnd == READ_6 || *cmd->cmnd == WRITE_6) | |
460 | i = scsi2int(cmd->cmnd + 2); | |
1da177e4 LT |
461 | else |
462 | i = -1; | |
463 | if (done) | |
2906b3ce | 464 | shost_printk(KERN_DEBUG, sh, "aha1542_queuecommand: dev %d cmd %02x pos %d len %d ", target, *cmd->cmnd, i, bufflen); |
1da177e4 | 465 | else |
2906b3ce OZ |
466 | shost_printk(KERN_DEBUG, sh, "aha1542_command: dev %d cmd %02x pos %d len %d ", target, *cmd->cmnd, i, bufflen); |
467 | shost_printk(KERN_DEBUG, sh, "aha1542_queuecommand: dumping scsi cmd:"); | |
55b28f9f OZ |
468 | for (i = 0; i < cmd->cmd_len; i++) |
469 | printk("%02x ", cmd->cmnd[i]); | |
1da177e4 | 470 | printk("\n"); |
55b28f9f | 471 | if (*cmd->cmnd == WRITE_10 || *cmd->cmnd == WRITE_6) |
1da177e4 LT |
472 | return 0; /* we are still testing, so *don't* write */ |
473 | #endif | |
474 | /* Use the outgoing mailboxes in a round-robin fashion, because this | |
475 | is how the host adapter will scan for them */ | |
476 | ||
477 | spin_lock_irqsave(&aha1542_lock, flags); | |
e98878f7 | 478 | mbo = aha1542->aha1542_last_mbo_used + 1; |
1da177e4 LT |
479 | if (mbo >= AHA1542_MAILBOXES) |
480 | mbo = 0; | |
481 | ||
482 | do { | |
55b28f9f | 483 | if (mb[mbo].status == 0 && aha1542->int_cmds[mbo] == NULL) |
1da177e4 LT |
484 | break; |
485 | mbo++; | |
486 | if (mbo >= AHA1542_MAILBOXES) | |
487 | mbo = 0; | |
e98878f7 | 488 | } while (mbo != aha1542->aha1542_last_mbo_used); |
1da177e4 | 489 | |
55b28f9f | 490 | if (mb[mbo].status || aha1542->int_cmds[mbo]) |
1da177e4 LT |
491 | panic("Unable to find empty mailbox for aha1542.\n"); |
492 | ||
55b28f9f | 493 | aha1542->int_cmds[mbo] = cmd; /* This will effectively prevent someone else from |
e98878f7 | 494 | screwing with this cdb. */ |
1da177e4 | 495 | |
e98878f7 | 496 | aha1542->aha1542_last_mbo_used = mbo; |
1da177e4 LT |
497 | spin_unlock_irqrestore(&aha1542_lock, flags); |
498 | ||
499 | #ifdef DEBUG | |
2906b3ce | 500 | shost_printk(KERN_DEBUG, sh, "Sending command (%d %x)...", mbo, done); |
1da177e4 LT |
501 | #endif |
502 | ||
10be6250 | 503 | any2scsi(mb[mbo].ccbptr, isa_virt_to_bus(&ccb[mbo])); /* This gets trashed for some reason */ |
1da177e4 LT |
504 | |
505 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
506 | ||
55b28f9f | 507 | ccb[mbo].cdblen = cmd->cmd_len; |
1da177e4 LT |
508 | |
509 | direction = 0; | |
55b28f9f | 510 | if (*cmd->cmnd == READ_10 || *cmd->cmnd == READ_6) |
1da177e4 | 511 | direction = 8; |
55b28f9f | 512 | else if (*cmd->cmnd == WRITE_10 || *cmd->cmnd == WRITE_6) |
1da177e4 LT |
513 | direction = 16; |
514 | ||
55b28f9f | 515 | memcpy(ccb[mbo].cdb, cmd->cmnd, ccb[mbo].cdblen); |
1da177e4 | 516 | |
fc3fdfcc | 517 | if (bufflen) { |
51cf2249 | 518 | struct scatterlist *sg; |
1da177e4 LT |
519 | struct chain *cptr; |
520 | #ifdef DEBUG | |
521 | unsigned char *ptr; | |
522 | #endif | |
55b28f9f | 523 | int i, sg_count = scsi_sg_count(cmd); |
1da177e4 | 524 | ccb[mbo].op = 2; /* SCSI Initiator Command w/scatter-gather */ |
55b28f9f | 525 | cmd->host_scribble = kmalloc(sizeof(*cptr)*sg_count, |
fc3fdfcc | 526 | GFP_KERNEL | GFP_DMA); |
55b28f9f | 527 | cptr = (struct chain *) cmd->host_scribble; |
1da177e4 LT |
528 | if (cptr == NULL) { |
529 | /* free the claimed mailbox slot */ | |
55b28f9f | 530 | aha1542->int_cmds[mbo] = NULL; |
1da177e4 LT |
531 | return SCSI_MLQUEUE_HOST_BUSY; |
532 | } | |
55b28f9f | 533 | scsi_for_each_sg(cmd, sg, sg_count, i) { |
10be6250 OZ |
534 | any2scsi(cptr[i].dataptr, isa_page_to_bus(sg_page(sg)) |
535 | + sg->offset); | |
51cf2249 | 536 | any2scsi(cptr[i].datalen, sg->length); |
1da177e4 | 537 | }; |
fc3fdfcc | 538 | any2scsi(ccb[mbo].datalen, sg_count * sizeof(struct chain)); |
10be6250 | 539 | any2scsi(ccb[mbo].dataptr, isa_virt_to_bus(cptr)); |
1da177e4 LT |
540 | #ifdef DEBUG |
541 | printk("cptr %x: ", cptr); | |
542 | ptr = (unsigned char *) cptr; | |
543 | for (i = 0; i < 18; i++) | |
544 | printk("%02x ", ptr[i]); | |
545 | #endif | |
546 | } else { | |
547 | ccb[mbo].op = 0; /* SCSI Initiator Command */ | |
55b28f9f | 548 | cmd->host_scribble = NULL; |
fc3fdfcc BH |
549 | any2scsi(ccb[mbo].datalen, 0); |
550 | any2scsi(ccb[mbo].dataptr, 0); | |
1da177e4 LT |
551 | }; |
552 | ccb[mbo].idlun = (target & 7) << 5 | direction | (lun & 7); /*SCSI Target Id */ | |
553 | ccb[mbo].rsalen = 16; | |
554 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
555 | ccb[mbo].commlinkid = 0; | |
556 | ||
557 | #ifdef DEBUG | |
558 | { | |
559 | int i; | |
2906b3ce | 560 | shost_printk(KERN_DEBUG, sh, "aha1542_command: sending.. "); |
1da177e4 | 561 | for (i = 0; i < sizeof(ccb[mbo]) - 10; i++) |
cb5b570c | 562 | printk("%02x ", ((u8 *) &ccb[mbo])[i]); |
1da177e4 LT |
563 | }; |
564 | #endif | |
565 | ||
566 | if (done) { | |
f232d538 | 567 | DEB(printk("aha1542_queuecommand: now waiting for interrupt ")); |
55b28f9f | 568 | cmd->scsi_done = done; |
1da177e4 | 569 | mb[mbo].status = 1; |
55b28f9f | 570 | aha1542_outb(cmd->device->host->io_port, CMD_START_SCSI); |
1da177e4 LT |
571 | } else |
572 | printk("aha1542_queuecommand: done can't be NULL\n"); | |
573 | ||
574 | return 0; | |
575 | } | |
576 | ||
f281233d JG |
577 | static DEF_SCSI_QCMD(aha1542_queuecommand) |
578 | ||
1da177e4 | 579 | /* Initialize mailboxes */ |
68ea9de3 | 580 | static void setup_mailboxes(struct Scsi_Host *sh) |
1da177e4 | 581 | { |
c2532f68 | 582 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
1da177e4 | 583 | int i; |
e98878f7 OZ |
584 | struct mailbox *mb = aha1542->mb; |
585 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 | 586 | |
cad2fc72 | 587 | u8 mb_cmd[5] = { CMD_MBINIT, AHA1542_MAILBOXES, 0, 0, 0}; |
1da177e4 | 588 | |
1da177e4 LT |
589 | for (i = 0; i < AHA1542_MAILBOXES; i++) { |
590 | mb[i].status = mb[AHA1542_MAILBOXES + i].status = 0; | |
10be6250 | 591 | any2scsi(mb[i].ccbptr, isa_virt_to_bus(&ccb[i])); |
1da177e4 | 592 | }; |
68ea9de3 | 593 | aha1542_intr_reset(sh->io_port); /* reset interrupts, so they don't block */ |
cad2fc72 | 594 | any2scsi((mb_cmd + 2), isa_virt_to_bus(mb)); |
68ea9de3 | 595 | if (aha1542_out(sh->io_port, mb_cmd, 5)) |
2906b3ce | 596 | shost_printk(KERN_ERR, sh, "failed setting up mailboxes\n"); |
68ea9de3 | 597 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
598 | } |
599 | ||
68ea9de3 | 600 | static int aha1542_getconfig(struct Scsi_Host *sh) |
1da177e4 | 601 | { |
cb5b570c | 602 | u8 inquiry_result[3]; |
1da177e4 | 603 | int i; |
68ea9de3 | 604 | i = inb(STATUS(sh->io_port)); |
1da177e4 | 605 | if (i & DF) { |
68ea9de3 | 606 | i = inb(DATA(sh->io_port)); |
1da177e4 | 607 | }; |
68ea9de3 OZ |
608 | aha1542_outb(sh->io_port, CMD_RETCONF); |
609 | aha1542_in(sh->io_port, inquiry_result, 3, 0); | |
610 | if (!wait_mask(INTRFLAGS(sh->io_port), INTRMASK, HACC, 0, 0)) | |
2906b3ce | 611 | shost_printk(KERN_ERR, sh, "error querying board settings\n"); |
68ea9de3 | 612 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
613 | switch (inquiry_result[0]) { |
614 | case 0x80: | |
68ea9de3 | 615 | sh->dma_channel = 7; |
1da177e4 LT |
616 | break; |
617 | case 0x40: | |
68ea9de3 | 618 | sh->dma_channel = 6; |
1da177e4 LT |
619 | break; |
620 | case 0x20: | |
68ea9de3 | 621 | sh->dma_channel = 5; |
1da177e4 LT |
622 | break; |
623 | case 0x01: | |
68ea9de3 | 624 | sh->dma_channel = 0; |
1da177e4 LT |
625 | break; |
626 | case 0: | |
627 | /* This means that the adapter, although Adaptec 1542 compatible, doesn't use a DMA channel. | |
628 | Currently only aware of the BusLogic BT-445S VL-Bus adapter which needs this. */ | |
68ea9de3 | 629 | sh->dma_channel = 0xFF; |
1da177e4 LT |
630 | break; |
631 | default: | |
2906b3ce | 632 | shost_printk(KERN_ERR, sh, "Unable to determine DMA channel.\n"); |
1da177e4 LT |
633 | return -1; |
634 | }; | |
635 | switch (inquiry_result[1]) { | |
636 | case 0x40: | |
68ea9de3 | 637 | sh->irq = 15; |
1da177e4 LT |
638 | break; |
639 | case 0x20: | |
68ea9de3 | 640 | sh->irq = 14; |
1da177e4 LT |
641 | break; |
642 | case 0x8: | |
68ea9de3 | 643 | sh->irq = 12; |
1da177e4 LT |
644 | break; |
645 | case 0x4: | |
68ea9de3 | 646 | sh->irq = 11; |
1da177e4 LT |
647 | break; |
648 | case 0x2: | |
68ea9de3 | 649 | sh->irq = 10; |
1da177e4 LT |
650 | break; |
651 | case 0x1: | |
68ea9de3 | 652 | sh->irq = 9; |
1da177e4 LT |
653 | break; |
654 | default: | |
2906b3ce | 655 | shost_printk(KERN_ERR, sh, "Unable to determine IRQ level.\n"); |
1da177e4 LT |
656 | return -1; |
657 | }; | |
68ea9de3 | 658 | sh->this_id = inquiry_result[2] & 7; |
1da177e4 LT |
659 | return 0; |
660 | } | |
661 | ||
662 | /* This function should only be called for 1542C boards - we can detect | |
663 | the special firmware settings and unlock the board */ | |
664 | ||
68ea9de3 | 665 | static int aha1542_mbenable(struct Scsi_Host *sh) |
1da177e4 | 666 | { |
cb5b570c OZ |
667 | static u8 mbenable_cmd[3]; |
668 | static u8 mbenable_result[2]; | |
1da177e4 LT |
669 | int retval; |
670 | ||
671 | retval = BIOS_TRANSLATION_6432; | |
672 | ||
68ea9de3 OZ |
673 | aha1542_outb(sh->io_port, CMD_EXTBIOS); |
674 | if (aha1542_in(sh->io_port, mbenable_result, 2, 100)) | |
1da177e4 | 675 | return retval; |
68ea9de3 | 676 | if (!wait_mask(INTRFLAGS(sh->io_port), INTRMASK, HACC, 0, 100)) |
2093bfa1 | 677 | goto fail; |
68ea9de3 | 678 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
679 | |
680 | if ((mbenable_result[0] & 0x08) || mbenable_result[1]) { | |
681 | mbenable_cmd[0] = CMD_MBENABLE; | |
682 | mbenable_cmd[1] = 0; | |
683 | mbenable_cmd[2] = mbenable_result[1]; | |
684 | ||
685 | if ((mbenable_result[0] & 0x08) && (mbenable_result[1] & 0x03)) | |
686 | retval = BIOS_TRANSLATION_25563; | |
687 | ||
68ea9de3 | 688 | if (aha1542_out(sh->io_port, mbenable_cmd, 3)) |
2093bfa1 | 689 | goto fail; |
1da177e4 LT |
690 | }; |
691 | while (0) { | |
692 | fail: | |
2906b3ce | 693 | shost_printk(KERN_ERR, sh, "Mailbox init failed\n"); |
1da177e4 | 694 | } |
68ea9de3 | 695 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
696 | return retval; |
697 | } | |
698 | ||
699 | /* Query the board to find out if it is a 1542 or a 1740, or whatever. */ | |
68ea9de3 | 700 | static int aha1542_query(struct Scsi_Host *sh) |
1da177e4 | 701 | { |
68ea9de3 | 702 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
cb5b570c | 703 | u8 inquiry_result[4]; |
1da177e4 | 704 | int i; |
68ea9de3 | 705 | i = inb(STATUS(sh->io_port)); |
1da177e4 | 706 | if (i & DF) { |
68ea9de3 | 707 | i = inb(DATA(sh->io_port)); |
1da177e4 | 708 | }; |
68ea9de3 OZ |
709 | aha1542_outb(sh->io_port, CMD_INQUIRY); |
710 | aha1542_in(sh->io_port, inquiry_result, 4, 0); | |
711 | if (!wait_mask(INTRFLAGS(sh->io_port), INTRMASK, HACC, 0, 0)) | |
2906b3ce | 712 | shost_printk(KERN_ERR, sh, "error querying card type\n"); |
68ea9de3 | 713 | aha1542_intr_reset(sh->io_port); |
1da177e4 | 714 | |
68ea9de3 | 715 | aha1542->bios_translation = BIOS_TRANSLATION_6432; /* Default case */ |
1da177e4 LT |
716 | |
717 | /* For an AHA1740 series board, we ignore the board since there is a | |
718 | hardware bug which can lead to wrong blocks being returned if the board | |
719 | is operating in the 1542 emulation mode. Since there is an extended mode | |
720 | driver, we simply ignore the board and let the 1740 driver pick it up. | |
721 | */ | |
722 | ||
723 | if (inquiry_result[0] == 0x43) { | |
2906b3ce | 724 | shost_printk(KERN_INFO, sh, "Emulation mode not supported for AHA-1740 hardware, use aha1740 driver instead.\n"); |
1da177e4 LT |
725 | return 1; |
726 | }; | |
727 | ||
728 | /* Always call this - boards that do not support extended bios translation | |
729 | will ignore the command, and we will set the proper default */ | |
730 | ||
68ea9de3 | 731 | aha1542->bios_translation = aha1542_mbenable(sh); |
1da177e4 LT |
732 | |
733 | return 0; | |
734 | } | |
735 | ||
f71429ab | 736 | static u8 dma_speed_hw(int dma_speed) |
1da177e4 | 737 | { |
f71429ab OZ |
738 | switch (dma_speed) { |
739 | case 5: | |
740 | return 0x00; | |
741 | case 6: | |
742 | return 0x04; | |
743 | case 7: | |
744 | return 0x01; | |
745 | case 8: | |
746 | return 0x02; | |
747 | case 10: | |
748 | return 0x03; | |
1da177e4 | 749 | } |
1da177e4 | 750 | |
f71429ab | 751 | return 0xff; /* invalid */ |
1da177e4 LT |
752 | } |
753 | ||
f71429ab | 754 | /* Set the Bus on/off-times as not to ruin floppy performance */ |
37d607bd | 755 | static void aha1542_set_bus_times(struct Scsi_Host *sh, int bus_on, int bus_off, int dma_speed) |
1da177e4 | 756 | { |
37d607bd OZ |
757 | if (bus_on > 0) { |
758 | u8 oncmd[] = { CMD_BUSON_TIME, clamp(bus_on, 2, 15) }; | |
1da177e4 | 759 | |
37d607bd OZ |
760 | aha1542_intr_reset(sh->io_port); |
761 | if (aha1542_out(sh->io_port, oncmd, 2)) | |
f71429ab OZ |
762 | goto fail; |
763 | } | |
1da177e4 | 764 | |
37d607bd OZ |
765 | if (bus_off > 0) { |
766 | u8 offcmd[] = { CMD_BUSOFF_TIME, clamp(bus_off, 1, 64) }; | |
1da177e4 | 767 | |
37d607bd OZ |
768 | aha1542_intr_reset(sh->io_port); |
769 | if (aha1542_out(sh->io_port, offcmd, 2)) | |
f71429ab OZ |
770 | goto fail; |
771 | } | |
1da177e4 | 772 | |
37d607bd OZ |
773 | if (dma_speed_hw(dma_speed) != 0xff) { |
774 | u8 dmacmd[] = { CMD_DMASPEED, dma_speed_hw(dma_speed) }; | |
b847fd0d | 775 | |
37d607bd OZ |
776 | aha1542_intr_reset(sh->io_port); |
777 | if (aha1542_out(sh->io_port, dmacmd, 2)) | |
b847fd0d OZ |
778 | goto fail; |
779 | } | |
37d607bd | 780 | aha1542_intr_reset(sh->io_port); |
b847fd0d OZ |
781 | return; |
782 | fail: | |
2906b3ce | 783 | shost_printk(KERN_ERR, sh, "setting bus on/off-time failed\n"); |
37d607bd | 784 | aha1542_intr_reset(sh->io_port); |
b847fd0d OZ |
785 | } |
786 | ||
1da177e4 | 787 | /* return non-zero on detection */ |
643a7c43 | 788 | static struct Scsi_Host *aha1542_hw_init(struct scsi_host_template *tpnt, struct device *pdev, int indx) |
1da177e4 | 789 | { |
f71429ab | 790 | unsigned int base_io = io[indx]; |
c2532f68 | 791 | struct Scsi_Host *sh; |
e98878f7 | 792 | struct aha1542_hostdata *aha1542; |
2906b3ce | 793 | char dma_info[] = "no DMA"; |
1da177e4 | 794 | |
3a70c006 OZ |
795 | if (base_io == 0) |
796 | return NULL; | |
1da177e4 | 797 | |
3a70c006 OZ |
798 | if (!request_region(base_io, AHA1542_REGION_SIZE, "aha1542")) |
799 | return NULL; | |
1da177e4 | 800 | |
c2532f68 OZ |
801 | sh = scsi_host_alloc(tpnt, sizeof(struct aha1542_hostdata)); |
802 | if (!sh) | |
3a70c006 | 803 | goto release; |
c2532f68 | 804 | aha1542 = shost_priv(sh); |
b847fd0d | 805 | |
68ea9de3 OZ |
806 | sh->unique_id = base_io; |
807 | sh->io_port = base_io; | |
808 | sh->n_io_port = AHA1542_REGION_SIZE; | |
809 | aha1542->aha1542_last_mbi_used = 2 * AHA1542_MAILBOXES - 1; | |
810 | aha1542->aha1542_last_mbo_used = AHA1542_MAILBOXES - 1; | |
811 | ||
812 | if (!aha1542_test_port(sh)) | |
3a70c006 | 813 | goto unregister; |
1da177e4 | 814 | |
37d607bd | 815 | aha1542_set_bus_times(sh, bus_on[indx], bus_off[indx], dma_speed[indx]); |
68ea9de3 | 816 | if (aha1542_query(sh)) |
3a70c006 | 817 | goto unregister; |
68ea9de3 | 818 | if (aha1542_getconfig(sh) == -1) |
3a70c006 | 819 | goto unregister; |
1da177e4 | 820 | |
c2532f68 | 821 | if (sh->dma_channel != 0xFF) |
2906b3ce OZ |
822 | snprintf(dma_info, sizeof(dma_info), "DMA %d", sh->dma_channel); |
823 | shost_printk(KERN_INFO, sh, "Adaptec AHA-1542 (SCSI-ID %d) at IO 0x%x, IRQ %d, %s\n", | |
824 | sh->this_id, base_io, sh->irq, dma_info); | |
3a70c006 | 825 | if (aha1542->bios_translation == BIOS_TRANSLATION_25563) |
2906b3ce | 826 | shost_printk(KERN_INFO, sh, "Using extended bios translation\n"); |
1da177e4 | 827 | |
68ea9de3 | 828 | setup_mailboxes(sh); |
1da177e4 | 829 | |
c2532f68 OZ |
830 | if (request_irq(sh->irq, do_aha1542_intr_handle, 0, |
831 | "aha1542", sh)) { | |
2906b3ce | 832 | shost_printk(KERN_ERR, sh, "Unable to allocate IRQ.\n"); |
3a70c006 OZ |
833 | goto unregister; |
834 | } | |
c2532f68 OZ |
835 | if (sh->dma_channel != 0xFF) { |
836 | if (request_dma(sh->dma_channel, "aha1542")) { | |
2906b3ce | 837 | shost_printk(KERN_ERR, sh, "Unable to allocate DMA channel.\n"); |
3a70c006 OZ |
838 | goto free_irq; |
839 | } | |
c2532f68 OZ |
840 | if (sh->dma_channel == 0 || sh->dma_channel >= 5) { |
841 | set_dma_mode(sh->dma_channel, DMA_MODE_CASCADE); | |
842 | enable_dma(sh->dma_channel); | |
3a70c006 OZ |
843 | } |
844 | } | |
1da177e4 | 845 | |
c2532f68 | 846 | if (scsi_add_host(sh, pdev)) |
3a70c006 | 847 | goto free_dma; |
1da177e4 | 848 | |
c2532f68 | 849 | scsi_scan_host(sh); |
1da177e4 | 850 | |
c2532f68 | 851 | return sh; |
3a70c006 | 852 | free_dma: |
c2532f68 OZ |
853 | if (sh->dma_channel != 0xff) |
854 | free_dma(sh->dma_channel); | |
3a70c006 | 855 | free_irq: |
c2532f68 | 856 | free_irq(sh->irq, sh); |
3a70c006 | 857 | unregister: |
c2532f68 | 858 | scsi_host_put(sh); |
3a70c006 OZ |
859 | release: |
860 | release_region(base_io, AHA1542_REGION_SIZE); | |
1da177e4 | 861 | |
643a7c43 | 862 | return NULL; |
1da177e4 LT |
863 | } |
864 | ||
c2532f68 | 865 | static int aha1542_release(struct Scsi_Host *sh) |
1da177e4 | 866 | { |
c2532f68 OZ |
867 | scsi_remove_host(sh); |
868 | if (sh->dma_channel != 0xff) | |
869 | free_dma(sh->dma_channel); | |
870 | if (sh->irq) | |
871 | free_irq(sh->irq, sh); | |
872 | if (sh->io_port && sh->n_io_port) | |
873 | release_region(sh->io_port, sh->n_io_port); | |
874 | scsi_host_put(sh); | |
1da177e4 LT |
875 | return 0; |
876 | } | |
877 | ||
1da177e4 | 878 | |
1da177e4 LT |
879 | /* |
880 | * This is a device reset. This is handled by sending a special command | |
881 | * to the device. | |
882 | */ | |
55b28f9f | 883 | static int aha1542_dev_reset(struct scsi_cmnd *cmd) |
1da177e4 | 884 | { |
55b28f9f | 885 | struct aha1542_hostdata *aha1542 = shost_priv(cmd->device->host); |
1da177e4 | 886 | unsigned long flags; |
e98878f7 | 887 | struct mailbox *mb = aha1542->mb; |
55b28f9f OZ |
888 | u8 target = cmd->device->id; |
889 | u8 lun = cmd->device->lun; | |
1da177e4 | 890 | int mbo; |
e98878f7 | 891 | struct ccb *ccb = aha1542->ccb; |
1da177e4 | 892 | |
1da177e4 | 893 | spin_lock_irqsave(&aha1542_lock, flags); |
e98878f7 | 894 | mbo = aha1542->aha1542_last_mbo_used + 1; |
1da177e4 LT |
895 | if (mbo >= AHA1542_MAILBOXES) |
896 | mbo = 0; | |
897 | ||
898 | do { | |
55b28f9f | 899 | if (mb[mbo].status == 0 && aha1542->int_cmds[mbo] == NULL) |
1da177e4 LT |
900 | break; |
901 | mbo++; | |
902 | if (mbo >= AHA1542_MAILBOXES) | |
903 | mbo = 0; | |
e98878f7 | 904 | } while (mbo != aha1542->aha1542_last_mbo_used); |
1da177e4 | 905 | |
55b28f9f | 906 | if (mb[mbo].status || aha1542->int_cmds[mbo]) |
1da177e4 LT |
907 | panic("Unable to find empty mailbox for aha1542.\n"); |
908 | ||
55b28f9f | 909 | aha1542->int_cmds[mbo] = cmd; /* This will effectively |
e98878f7 OZ |
910 | prevent someone else from |
911 | screwing with this cdb. */ | |
1da177e4 | 912 | |
e98878f7 | 913 | aha1542->aha1542_last_mbo_used = mbo; |
1da177e4 LT |
914 | spin_unlock_irqrestore(&aha1542_lock, flags); |
915 | ||
10be6250 | 916 | any2scsi(mb[mbo].ccbptr, isa_virt_to_bus(&ccb[mbo])); /* This gets trashed for some reason */ |
1da177e4 LT |
917 | |
918 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
919 | ||
920 | ccb[mbo].op = 0x81; /* BUS DEVICE RESET */ | |
921 | ||
922 | ccb[mbo].idlun = (target & 7) << 5 | (lun & 7); /*SCSI Target Id */ | |
923 | ||
924 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
925 | ccb[mbo].commlinkid = 0; | |
926 | ||
927 | /* | |
928 | * Now tell the 1542 to flush all pending commands for this | |
929 | * target | |
930 | */ | |
55b28f9f | 931 | aha1542_outb(cmd->device->host->io_port, CMD_START_SCSI); |
1da177e4 | 932 | |
55b28f9f | 933 | scmd_printk(KERN_WARNING, cmd, |
017560fc | 934 | "Trying device reset for target\n"); |
1da177e4 LT |
935 | |
936 | return SUCCESS; | |
1da177e4 LT |
937 | } |
938 | ||
55b28f9f | 939 | static int aha1542_reset(struct scsi_cmnd *cmd, u8 reset_cmd) |
1da177e4 | 940 | { |
55b28f9f | 941 | struct aha1542_hostdata *aha1542 = shost_priv(cmd->device->host); |
1da177e4 LT |
942 | int i; |
943 | ||
944 | /* | |
945 | * This does a scsi reset for all devices on the bus. | |
946 | * In principle, we could also reset the 1542 - should | |
947 | * we do this? Try this first, and we can add that later | |
948 | * if it turns out to be useful. | |
949 | */ | |
55b28f9f | 950 | outb(reset_cmd, CONTROL(cmd->device->host->io_port)); |
1da177e4 LT |
951 | |
952 | /* | |
953 | * Wait for the thing to settle down a bit. Unfortunately | |
954 | * this is going to basically lock up the machine while we | |
955 | * wait for this to complete. To be 100% correct, we need to | |
956 | * check for timeout, and if we are doing something like this | |
957 | * we are pretty desperate anyways. | |
958 | */ | |
1da177e4 | 959 | ssleep(4); |
55b28f9f | 960 | spin_lock_irq(cmd->device->host->host_lock); |
1da177e4 | 961 | |
55b28f9f | 962 | if (!wait_mask(STATUS(cmd->device->host->io_port), |
a13b3722 | 963 | STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0)) { |
55b28f9f | 964 | spin_unlock_irq(cmd->device->host->host_lock); |
a13b3722 OZ |
965 | return FAILED; |
966 | } | |
8537cba8 OZ |
967 | /* |
968 | * We need to do this too before the 1542 can interact with | |
969 | * us again after host reset. | |
970 | */ | |
971 | if (reset_cmd & HRST) | |
68ea9de3 | 972 | setup_mailboxes(cmd->device->host); |
1da177e4 LT |
973 | /* |
974 | * Now try to pick up the pieces. For all pending commands, | |
975 | * free any internal data structures, and basically clear things | |
976 | * out. We do not try and restart any commands or anything - | |
977 | * the strategy handler takes care of that crap. | |
978 | */ | |
2906b3ce | 979 | shost_printk(KERN_WARNING, cmd->device->host, "Sent BUS RESET to scsi host %d\n", cmd->device->host->host_no); |
1da177e4 LT |
980 | |
981 | for (i = 0; i < AHA1542_MAILBOXES; i++) { | |
55b28f9f OZ |
982 | if (aha1542->int_cmds[i] != NULL) { |
983 | struct scsi_cmnd *tmp_cmd; | |
984 | tmp_cmd = aha1542->int_cmds[i]; | |
1da177e4 | 985 | |
55b28f9f | 986 | if (tmp_cmd->device->soft_reset) { |
1da177e4 LT |
987 | /* |
988 | * If this device implements the soft reset option, | |
989 | * then it is still holding onto the command, and | |
990 | * may yet complete it. In this case, we don't | |
991 | * flush the data. | |
992 | */ | |
993 | continue; | |
994 | } | |
55b28f9f OZ |
995 | kfree(tmp_cmd->host_scribble); |
996 | tmp_cmd->host_scribble = NULL; | |
997 | aha1542->int_cmds[i] = NULL; | |
e98878f7 | 998 | aha1542->mb[i].status = 0; |
1da177e4 LT |
999 | } |
1000 | } | |
1001 | ||
55b28f9f | 1002 | spin_unlock_irq(cmd->device->host->host_lock); |
1da177e4 | 1003 | return SUCCESS; |
1da177e4 LT |
1004 | } |
1005 | ||
55b28f9f | 1006 | static int aha1542_bus_reset(struct scsi_cmnd *cmd) |
1da177e4 | 1007 | { |
55b28f9f | 1008 | return aha1542_reset(cmd, SCRST); |
8537cba8 | 1009 | } |
1da177e4 | 1010 | |
55b28f9f | 1011 | static int aha1542_host_reset(struct scsi_cmnd *cmd) |
8537cba8 | 1012 | { |
55b28f9f | 1013 | return aha1542_reset(cmd, HRST | SCRST); |
1da177e4 LT |
1014 | } |
1015 | ||
1da177e4 | 1016 | static int aha1542_biosparam(struct scsi_device *sdev, |
17787a09 | 1017 | struct block_device *bdev, sector_t capacity, int geom[]) |
1da177e4 | 1018 | { |
e98878f7 | 1019 | struct aha1542_hostdata *aha1542 = shost_priv(sdev->host); |
1da177e4 | 1020 | |
17787a09 OZ |
1021 | if (capacity >= 0x200000 && |
1022 | aha1542->bios_translation == BIOS_TRANSLATION_25563) { | |
1da177e4 | 1023 | /* Please verify that this is the same as what DOS returns */ |
17787a09 OZ |
1024 | geom[0] = 255; /* heads */ |
1025 | geom[1] = 63; /* sectors */ | |
1da177e4 | 1026 | } else { |
17787a09 OZ |
1027 | geom[0] = 64; /* heads */ |
1028 | geom[1] = 32; /* sectors */ | |
1da177e4 | 1029 | } |
17787a09 | 1030 | geom[2] = sector_div(capacity, geom[0] * geom[1]); /* cylinders */ |
1da177e4 LT |
1031 | |
1032 | return 0; | |
1033 | } | |
1034 | MODULE_LICENSE("GPL"); | |
1035 | ||
d0be4a7d | 1036 | static struct scsi_host_template driver_template = { |
643a7c43 | 1037 | .module = THIS_MODULE, |
1da177e4 LT |
1038 | .proc_name = "aha1542", |
1039 | .name = "Adaptec 1542", | |
1da177e4 | 1040 | .queuecommand = aha1542_queuecommand, |
1da177e4 LT |
1041 | .eh_device_reset_handler= aha1542_dev_reset, |
1042 | .eh_bus_reset_handler = aha1542_bus_reset, | |
1043 | .eh_host_reset_handler = aha1542_host_reset, | |
1044 | .bios_param = aha1542_biosparam, | |
1045 | .can_queue = AHA1542_MAILBOXES, | |
1046 | .this_id = 7, | |
10be6250 OZ |
1047 | .sg_tablesize = 16, |
1048 | .cmd_per_lun = 1, | |
1da177e4 LT |
1049 | .unchecked_isa_dma = 1, |
1050 | .use_clustering = ENABLE_CLUSTERING, | |
1051 | }; | |
643a7c43 OZ |
1052 | |
1053 | static int aha1542_isa_match(struct device *pdev, unsigned int ndev) | |
1054 | { | |
1055 | struct Scsi_Host *sh = aha1542_hw_init(&driver_template, pdev, ndev); | |
1056 | ||
1057 | if (!sh) | |
1058 | return 0; | |
1059 | ||
1060 | dev_set_drvdata(pdev, sh); | |
1061 | return 1; | |
1062 | } | |
1063 | ||
1064 | static int aha1542_isa_remove(struct device *pdev, | |
1065 | unsigned int ndev) | |
1066 | { | |
1067 | aha1542_release(dev_get_drvdata(pdev)); | |
1068 | dev_set_drvdata(pdev, NULL); | |
1069 | return 0; | |
1070 | } | |
1071 | ||
1072 | static struct isa_driver aha1542_isa_driver = { | |
1073 | .match = aha1542_isa_match, | |
1074 | .remove = aha1542_isa_remove, | |
1075 | .driver = { | |
1076 | .name = "aha1542" | |
1077 | }, | |
1078 | }; | |
1079 | static int isa_registered; | |
1080 | ||
1081 | #ifdef CONFIG_PNP | |
1082 | static struct pnp_device_id aha1542_pnp_ids[] = { | |
1083 | { .id = "ADP1542" }, | |
1084 | { .id = "" } | |
1085 | }; | |
1086 | MODULE_DEVICE_TABLE(pnp, aha1542_pnp_ids); | |
1087 | ||
1088 | static int aha1542_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *id) | |
1089 | { | |
1090 | int indx; | |
1091 | struct Scsi_Host *sh; | |
1092 | ||
f71429ab OZ |
1093 | for (indx = 0; indx < ARRAY_SIZE(io); indx++) { |
1094 | if (io[indx]) | |
643a7c43 OZ |
1095 | continue; |
1096 | ||
1097 | if (pnp_activate_dev(pdev) < 0) | |
1098 | continue; | |
1099 | ||
f71429ab | 1100 | io[indx] = pnp_port_start(pdev, 0); |
643a7c43 OZ |
1101 | |
1102 | /* The card can be queried for its DMA, we have | |
1103 | the DMA set up that is enough */ | |
1104 | ||
2906b3ce | 1105 | dev_info(&pdev->dev, "ISAPnP found an AHA1535 at I/O 0x%03X", io[indx]); |
643a7c43 OZ |
1106 | } |
1107 | ||
1108 | sh = aha1542_hw_init(&driver_template, &pdev->dev, indx); | |
1109 | if (!sh) | |
1110 | return -ENODEV; | |
1111 | ||
1112 | pnp_set_drvdata(pdev, sh); | |
1113 | return 0; | |
1114 | } | |
1115 | ||
1116 | static void aha1542_pnp_remove(struct pnp_dev *pdev) | |
1117 | { | |
1118 | aha1542_release(pnp_get_drvdata(pdev)); | |
1119 | pnp_set_drvdata(pdev, NULL); | |
1120 | } | |
1121 | ||
1122 | static struct pnp_driver aha1542_pnp_driver = { | |
1123 | .name = "aha1542", | |
1124 | .id_table = aha1542_pnp_ids, | |
1125 | .probe = aha1542_pnp_probe, | |
1126 | .remove = aha1542_pnp_remove, | |
1127 | }; | |
1128 | static int pnp_registered; | |
1129 | #endif /* CONFIG_PNP */ | |
1130 | ||
1131 | static int __init aha1542_init(void) | |
1132 | { | |
1133 | int ret = 0; | |
643a7c43 OZ |
1134 | |
1135 | #ifdef CONFIG_PNP | |
1136 | if (isapnp) { | |
1137 | ret = pnp_register_driver(&aha1542_pnp_driver); | |
1138 | if (!ret) | |
1139 | pnp_registered = 1; | |
1140 | } | |
1141 | #endif | |
1142 | ret = isa_register_driver(&aha1542_isa_driver, MAXBOARDS); | |
1143 | if (!ret) | |
1144 | isa_registered = 1; | |
1145 | ||
1146 | #ifdef CONFIG_PNP | |
1147 | if (pnp_registered) | |
1148 | ret = 0; | |
1149 | #endif | |
1150 | if (isa_registered) | |
1151 | ret = 0; | |
1152 | ||
1153 | return ret; | |
1154 | } | |
1155 | ||
1156 | static void __exit aha1542_exit(void) | |
1157 | { | |
1158 | #ifdef CONFIG_PNP | |
1159 | if (pnp_registered) | |
1160 | pnp_unregister_driver(&aha1542_pnp_driver); | |
1161 | #endif | |
1162 | if (isa_registered) | |
1163 | isa_unregister_driver(&aha1542_isa_driver); | |
1164 | } | |
1165 | ||
1166 | module_init(aha1542_init); | |
1167 | module_exit(aha1542_exit); |