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 | 26 | |
f71429ab | 27 | #define MAXBOARDS 4 |
1da177e4 | 28 | |
f71429ab OZ |
29 | static bool isapnp = 1; |
30 | module_param(isapnp, bool, 0); | |
31 | MODULE_PARM_DESC(isapnp, "enable PnP support (default=1)"); | |
1da177e4 | 32 | |
f71429ab OZ |
33 | static int io[MAXBOARDS] = { 0x330, 0x334, 0, 0 }; |
34 | module_param_array(io, int, NULL, 0); | |
35 | MODULE_PARM_DESC(io, "base IO address of controller (0x130,0x134,0x230,0x234,0x330,0x334, default=0x330,0x334)"); | |
1da177e4 | 36 | |
f71429ab OZ |
37 | /* time AHA spends on the AT-bus during data transfer */ |
38 | static int bus_on[MAXBOARDS] = { -1, -1, -1, -1 }; /* power-on default: 11us */ | |
39 | module_param_array(bus_on, int, NULL, 0); | |
40 | MODULE_PARM_DESC(bus_on, "bus on time [us] (2-15, default=-1 [HW default: 11])"); | |
1da177e4 | 41 | |
f71429ab OZ |
42 | /* time AHA spends off the bus (not to monopolize it) during data transfer */ |
43 | static int bus_off[MAXBOARDS] = { -1, -1, -1, -1 }; /* power-on default: 4us */ | |
44 | module_param_array(bus_off, int, NULL, 0); | |
45 | MODULE_PARM_DESC(bus_off, "bus off time [us] (1-64, default=-1 [HW default: 4])"); | |
1da177e4 | 46 | |
f71429ab OZ |
47 | /* default is jumper selected (J1 on 1542A), factory default = 5 MB/s */ |
48 | static int dma_speed[MAXBOARDS] = { -1, -1, -1, -1 }; | |
49 | module_param_array(dma_speed, int, NULL, 0); | |
50 | MODULE_PARM_DESC(dma_speed, "DMA speed [MB/s] (5,6,7,8,10, default=-1 [by jumper])"); | |
1da177e4 | 51 | |
1da177e4 LT |
52 | #define BIOS_TRANSLATION_6432 1 /* Default case these days */ |
53 | #define BIOS_TRANSLATION_25563 2 /* Big disk case */ | |
54 | ||
55 | struct aha1542_hostdata { | |
56 | /* This will effectively start both of them at the first mailbox */ | |
57 | int bios_translation; /* Mapping bios uses - for compatibility */ | |
58 | int aha1542_last_mbi_used; | |
59 | int aha1542_last_mbo_used; | |
55b28f9f | 60 | struct scsi_cmnd *int_cmds[AHA1542_MAILBOXES]; |
1da177e4 LT |
61 | struct mailbox mb[2 * AHA1542_MAILBOXES]; |
62 | struct ccb ccb[AHA1542_MAILBOXES]; | |
63 | }; | |
64 | ||
1da177e4 LT |
65 | static DEFINE_SPINLOCK(aha1542_lock); |
66 | ||
f1bbef63 OZ |
67 | static inline void aha1542_intr_reset(u16 base) |
68 | { | |
69 | outb(IRST, CONTROL(base)); | |
70 | } | |
1da177e4 | 71 | |
2093bfa1 OZ |
72 | static inline bool wait_mask(u16 port, u8 mask, u8 allof, u8 noneof, int timeout) |
73 | { | |
74 | bool delayed = true; | |
75 | ||
76 | if (timeout == 0) { | |
77 | timeout = 3000000; | |
78 | delayed = false; | |
79 | } | |
80 | ||
81 | while (1) { | |
82 | u8 bits = inb(port) & mask; | |
83 | if ((bits & allof) == allof && ((bits & noneof) == 0)) | |
84 | break; | |
85 | if (delayed) | |
86 | mdelay(1); | |
87 | if (--timeout == 0) | |
88 | return false; | |
89 | } | |
90 | ||
91 | return true; | |
92 | } | |
1da177e4 | 93 | |
1da177e4 LT |
94 | /* This is a bit complicated, but we need to make sure that an interrupt |
95 | routine does not send something out while we are in the middle of this. | |
96 | Fortunately, it is only at boot time that multi-byte messages | |
97 | are ever sent. */ | |
cad2fc72 | 98 | static int aha1542_outb(unsigned int base, u8 val) |
1da177e4 | 99 | { |
0c2b6481 OZ |
100 | unsigned long flags; |
101 | ||
102 | while (1) { | |
2906b3ce | 103 | if (!wait_mask(STATUS(base), CDF, 0, CDF, 0)) |
0c2b6481 | 104 | return 1; |
1da177e4 | 105 | spin_lock_irqsave(&aha1542_lock, flags); |
0c2b6481 OZ |
106 | if (inb(STATUS(base)) & CDF) { |
107 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
108 | continue; | |
1da177e4 | 109 | } |
cad2fc72 | 110 | outb(val, DATA(base)); |
1da177e4 | 111 | spin_unlock_irqrestore(&aha1542_lock, flags); |
0c2b6481 | 112 | return 0; |
1da177e4 | 113 | } |
0c2b6481 OZ |
114 | } |
115 | ||
cad2fc72 | 116 | static int aha1542_out(unsigned int base, u8 *buf, int len) |
0c2b6481 OZ |
117 | { |
118 | unsigned long flags; | |
119 | ||
120 | spin_lock_irqsave(&aha1542_lock, flags); | |
121 | while (len--) { | |
122 | if (!wait_mask(STATUS(base), CDF, 0, CDF, 0)) { | |
123 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
0c2b6481 OZ |
124 | return 1; |
125 | } | |
cad2fc72 | 126 | outb(*buf++, DATA(base)); |
0c2b6481 OZ |
127 | } |
128 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
23e6940a OZ |
129 | if (!wait_mask(INTRFLAGS(base), INTRMASK, HACC, 0, 0)) |
130 | return 1; | |
0c2b6481 | 131 | |
1da177e4 | 132 | return 0; |
1da177e4 LT |
133 | } |
134 | ||
135 | /* Only used at boot time, so we do not need to worry about latency as much | |
136 | here */ | |
137 | ||
cad2fc72 | 138 | static int aha1542_in(unsigned int base, u8 *buf, int len, int timeout) |
1da177e4 LT |
139 | { |
140 | unsigned long flags; | |
141 | ||
142 | spin_lock_irqsave(&aha1542_lock, flags); | |
143 | while (len--) { | |
a13b3722 OZ |
144 | if (!wait_mask(STATUS(base), DF, DF, 0, timeout)) { |
145 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
a13b3722 OZ |
146 | return 1; |
147 | } | |
cad2fc72 | 148 | *buf++ = inb(DATA(base)); |
1da177e4 LT |
149 | } |
150 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
151 | return 0; | |
1da177e4 LT |
152 | } |
153 | ||
154 | static int makecode(unsigned hosterr, unsigned scsierr) | |
155 | { | |
156 | switch (hosterr) { | |
157 | case 0x0: | |
158 | case 0xa: /* Linked command complete without error and linked normally */ | |
159 | case 0xb: /* Linked command complete without error, interrupt generated */ | |
160 | hosterr = 0; | |
161 | break; | |
162 | ||
163 | case 0x11: /* Selection time out-The initiator selection or target | |
164 | reselection was not complete within the SCSI Time out period */ | |
165 | hosterr = DID_TIME_OUT; | |
166 | break; | |
167 | ||
168 | case 0x12: /* Data overrun/underrun-The target attempted to transfer more data | |
169 | than was allocated by the Data Length field or the sum of the | |
170 | Scatter / Gather Data Length fields. */ | |
171 | ||
172 | case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */ | |
173 | ||
174 | case 0x15: /* MBO command was not 00, 01 or 02-The first byte of the CB was | |
175 | invalid. This usually indicates a software failure. */ | |
176 | ||
177 | case 0x16: /* Invalid CCB Operation Code-The first byte of the CCB was invalid. | |
178 | This usually indicates a software failure. */ | |
179 | ||
180 | case 0x17: /* Linked CCB does not have the same LUN-A subsequent CCB of a set | |
181 | of linked CCB's does not specify the same logical unit number as | |
182 | the first. */ | |
183 | case 0x18: /* Invalid Target Direction received from Host-The direction of a | |
184 | Target Mode CCB was invalid. */ | |
185 | ||
186 | case 0x19: /* Duplicate CCB Received in Target Mode-More than once CCB was | |
187 | received to service data transfer between the same target LUN | |
188 | and initiator SCSI ID in the same direction. */ | |
189 | ||
190 | case 0x1a: /* Invalid CCB or Segment List Parameter-A segment list with a zero | |
191 | length segment or invalid segment list boundaries was received. | |
192 | A CCB parameter was invalid. */ | |
fde1fb8a OZ |
193 | #ifdef DEBUG |
194 | printk("Aha1542: %x %x\n", hosterr, scsierr); | |
195 | #endif | |
1da177e4 LT |
196 | hosterr = DID_ERROR; /* Couldn't find any better */ |
197 | break; | |
198 | ||
199 | case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus | |
200 | phase sequence was requested by the target. The host adapter | |
201 | will generate a SCSI Reset Condition, notifying the host with | |
202 | a SCRD interrupt */ | |
203 | hosterr = DID_RESET; | |
204 | break; | |
205 | default: | |
206 | printk(KERN_ERR "aha1542: makecode: unknown hoststatus %x\n", hosterr); | |
207 | break; | |
208 | } | |
209 | return scsierr | (hosterr << 16); | |
210 | } | |
211 | ||
68ea9de3 | 212 | static int aha1542_test_port(struct Scsi_Host *sh) |
1da177e4 | 213 | { |
cb5b570c | 214 | u8 inquiry_result[4]; |
cad2fc72 | 215 | int i; |
1da177e4 LT |
216 | |
217 | /* Quick and dirty test for presence of the card. */ | |
68ea9de3 | 218 | if (inb(STATUS(sh->io_port)) == 0xff) |
1da177e4 LT |
219 | return 0; |
220 | ||
221 | /* Reset the adapter. I ought to make a hard reset, but it's not really necessary */ | |
222 | ||
1da177e4 | 223 | /* In case some other card was probing here, reset interrupts */ |
68ea9de3 | 224 | aha1542_intr_reset(sh->io_port); /* reset interrupts, so they don't block */ |
1da177e4 | 225 | |
68ea9de3 | 226 | outb(SRST | IRST /*|SCRST */ , CONTROL(sh->io_port)); |
1da177e4 LT |
227 | |
228 | mdelay(20); /* Wait a little bit for things to settle down. */ | |
229 | ||
1da177e4 | 230 | /* Expect INIT and IDLE, any of the others are bad */ |
68ea9de3 | 231 | if (!wait_mask(STATUS(sh->io_port), STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0)) |
a13b3722 | 232 | return 0; |
1da177e4 | 233 | |
1da177e4 | 234 | /* Shouldn't have generated any interrupts during reset */ |
68ea9de3 | 235 | if (inb(INTRFLAGS(sh->io_port)) & INTRMASK) |
a13b3722 | 236 | return 0; |
1da177e4 | 237 | |
1da177e4 LT |
238 | /* Perform a host adapter inquiry instead so we do not need to set |
239 | up the mailboxes ahead of time */ | |
240 | ||
68ea9de3 | 241 | aha1542_outb(sh->io_port, CMD_INQUIRY); |
1da177e4 | 242 | |
cad2fc72 | 243 | for (i = 0; i < 4; i++) { |
68ea9de3 | 244 | if (!wait_mask(STATUS(sh->io_port), DF, DF, 0, 0)) |
a13b3722 | 245 | return 0; |
68ea9de3 | 246 | inquiry_result[i] = inb(DATA(sh->io_port)); |
1da177e4 LT |
247 | } |
248 | ||
1da177e4 | 249 | /* Reading port should reset DF */ |
68ea9de3 | 250 | if (inb(STATUS(sh->io_port)) & DF) |
a13b3722 | 251 | return 0; |
1da177e4 | 252 | |
1da177e4 | 253 | /* When HACC, command is completed, and we're though testing */ |
68ea9de3 | 254 | if (!wait_mask(INTRFLAGS(sh->io_port), HACC, HACC, 0, 0)) |
a13b3722 | 255 | return 0; |
1da177e4 | 256 | |
1da177e4 | 257 | /* Clear interrupts */ |
68ea9de3 | 258 | outb(IRST, CONTROL(sh->io_port)); |
1da177e4 | 259 | |
bdebe224 | 260 | return 1; |
1da177e4 LT |
261 | } |
262 | ||
1da177e4 | 263 | /* A "high" level interrupt handler */ |
c2532f68 | 264 | static void aha1542_intr_handle(struct Scsi_Host *sh) |
1da177e4 | 265 | { |
c2532f68 | 266 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
55b28f9f | 267 | void (*my_done)(struct scsi_cmnd *) = NULL; |
1da177e4 LT |
268 | int errstatus, mbi, mbo, mbistatus; |
269 | int number_serviced; | |
270 | unsigned long flags; | |
55b28f9f | 271 | struct scsi_cmnd *tmp_cmd; |
1da177e4 | 272 | int flag; |
e98878f7 OZ |
273 | struct mailbox *mb = aha1542->mb; |
274 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 LT |
275 | |
276 | #ifdef DEBUG | |
277 | { | |
c2532f68 | 278 | flag = inb(INTRFLAGS(sh->io_port)); |
2906b3ce | 279 | shost_printk(KERN_DEBUG, sh, "aha1542_intr_handle: "); |
1da177e4 LT |
280 | if (!(flag & ANYINTR)) |
281 | printk("no interrupt?"); | |
282 | if (flag & MBIF) | |
283 | printk("MBIF "); | |
284 | if (flag & MBOA) | |
285 | printk("MBOF "); | |
286 | if (flag & HACC) | |
287 | printk("HACC "); | |
288 | if (flag & SCRD) | |
289 | printk("SCRD "); | |
c2532f68 | 290 | printk("status %02x\n", inb(STATUS(sh->io_port))); |
1da177e4 LT |
291 | }; |
292 | #endif | |
293 | number_serviced = 0; | |
1da177e4 LT |
294 | |
295 | while (1 == 1) { | |
c2532f68 | 296 | flag = inb(INTRFLAGS(sh->io_port)); |
1da177e4 LT |
297 | |
298 | /* Check for unusual interrupts. If any of these happen, we should | |
299 | probably do something special, but for now just printing a message | |
300 | is sufficient. A SCSI reset detected is something that we really | |
301 | need to deal with in some way. */ | |
302 | if (flag & ~MBIF) { | |
303 | if (flag & MBOA) | |
304 | printk("MBOF "); | |
305 | if (flag & HACC) | |
306 | printk("HACC "); | |
dfd7c991 | 307 | if (flag & SCRD) |
1da177e4 | 308 | printk("SCRD "); |
1da177e4 | 309 | } |
c2532f68 | 310 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
311 | |
312 | spin_lock_irqsave(&aha1542_lock, flags); | |
e98878f7 | 313 | mbi = aha1542->aha1542_last_mbi_used + 1; |
1da177e4 LT |
314 | if (mbi >= 2 * AHA1542_MAILBOXES) |
315 | mbi = AHA1542_MAILBOXES; | |
316 | ||
317 | do { | |
318 | if (mb[mbi].status != 0) | |
319 | break; | |
320 | mbi++; | |
321 | if (mbi >= 2 * AHA1542_MAILBOXES) | |
322 | mbi = AHA1542_MAILBOXES; | |
e98878f7 | 323 | } while (mbi != aha1542->aha1542_last_mbi_used); |
1da177e4 LT |
324 | |
325 | if (mb[mbi].status == 0) { | |
326 | spin_unlock_irqrestore(&aha1542_lock, flags); | |
327 | /* Hmm, no mail. Must have read it the last time around */ | |
dfd7c991 | 328 | if (!number_serviced) |
2906b3ce | 329 | shost_printk(KERN_WARNING, sh, "interrupt received, but no mail.\n"); |
1da177e4 LT |
330 | return; |
331 | }; | |
332 | ||
10be6250 | 333 | mbo = (scsi2int(mb[mbi].ccbptr) - (isa_virt_to_bus(&ccb[0]))) / sizeof(struct ccb); |
1da177e4 LT |
334 | mbistatus = mb[mbi].status; |
335 | mb[mbi].status = 0; | |
e98878f7 | 336 | aha1542->aha1542_last_mbi_used = mbi; |
1da177e4 LT |
337 | spin_unlock_irqrestore(&aha1542_lock, flags); |
338 | ||
339 | #ifdef DEBUG | |
fde1fb8a OZ |
340 | if (ccb[mbo].tarstat | ccb[mbo].hastat) |
341 | shost_printk(KERN_DEBUG, sh, "aha1542_command: returning %x (status %d)\n", | |
342 | ccb[mbo].tarstat + ((int) ccb[mbo].hastat << 16), mb[mbi].status); | |
1da177e4 LT |
343 | #endif |
344 | ||
345 | if (mbistatus == 3) | |
346 | continue; /* Aborted command not found */ | |
347 | ||
348 | #ifdef DEBUG | |
2906b3ce | 349 | shost_printk(KERN_DEBUG, sh, "...done %d %d\n", mbo, mbi); |
1da177e4 LT |
350 | #endif |
351 | ||
55b28f9f | 352 | tmp_cmd = aha1542->int_cmds[mbo]; |
1da177e4 | 353 | |
55b28f9f | 354 | if (!tmp_cmd || !tmp_cmd->scsi_done) { |
2906b3ce OZ |
355 | shost_printk(KERN_WARNING, sh, "Unexpected interrupt\n"); |
356 | shost_printk(KERN_WARNING, sh, "tarstat=%x, hastat=%x idlun=%x ccb#=%d\n", ccb[mbo].tarstat, | |
1da177e4 LT |
357 | ccb[mbo].hastat, ccb[mbo].idlun, mbo); |
358 | return; | |
359 | } | |
55b28f9f OZ |
360 | my_done = tmp_cmd->scsi_done; |
361 | kfree(tmp_cmd->host_scribble); | |
362 | tmp_cmd->host_scribble = NULL; | |
1da177e4 LT |
363 | /* Fetch the sense data, and tuck it away, in the required slot. The |
364 | Adaptec automatically fetches it, and there is no guarantee that | |
365 | we will still have it in the cdb when we come back */ | |
366 | if (ccb[mbo].tarstat == 2) | |
55b28f9f | 367 | memcpy(tmp_cmd->sense_buffer, &ccb[mbo].cdb[ccb[mbo].cdblen], |
b80ca4f7 | 368 | SCSI_SENSE_BUFFERSIZE); |
1da177e4 LT |
369 | |
370 | ||
371 | /* is there mail :-) */ | |
372 | ||
373 | /* more error checking left out here */ | |
374 | if (mbistatus != 1) | |
375 | /* This is surely wrong, but I don't know what's right */ | |
376 | errstatus = makecode(ccb[mbo].hastat, ccb[mbo].tarstat); | |
377 | else | |
378 | errstatus = 0; | |
379 | ||
380 | #ifdef DEBUG | |
381 | if (errstatus) | |
2906b3ce | 382 | shost_printk(KERN_DEBUG, sh, "(aha1542 error:%x %x %x) ", errstatus, |
1da177e4 | 383 | ccb[mbo].hastat, ccb[mbo].tarstat); |
1da177e4 | 384 | if (ccb[mbo].tarstat == 2) { |
1da177e4 | 385 | int i; |
fde1fb8a OZ |
386 | |
387 | printk("aha1542_intr_handle: sense:"); | |
1da177e4 LT |
388 | for (i = 0; i < 12; i++) |
389 | printk("%02x ", ccb[mbo].cdb[ccb[mbo].cdblen + i]); | |
390 | printk("\n"); | |
1da177e4 | 391 | } |
fde1fb8a OZ |
392 | if (errstatus) |
393 | printk("aha1542_intr_handle: returning %6x\n", errstatus); | |
394 | #endif | |
55b28f9f OZ |
395 | tmp_cmd->result = errstatus; |
396 | aha1542->int_cmds[mbo] = NULL; /* This effectively frees up the mailbox slot, as | |
e98878f7 | 397 | far as queuecommand is concerned */ |
55b28f9f | 398 | my_done(tmp_cmd); |
1da177e4 LT |
399 | number_serviced++; |
400 | }; | |
401 | } | |
402 | ||
09a44833 OZ |
403 | /* A quick wrapper for do_aha1542_intr_handle to grab the spin lock */ |
404 | static irqreturn_t do_aha1542_intr_handle(int dummy, void *dev_id) | |
405 | { | |
406 | unsigned long flags; | |
c2532f68 | 407 | struct Scsi_Host *sh = dev_id; |
09a44833 | 408 | |
c2532f68 OZ |
409 | spin_lock_irqsave(sh->host_lock, flags); |
410 | aha1542_intr_handle(sh); | |
411 | spin_unlock_irqrestore(sh->host_lock, flags); | |
09a44833 OZ |
412 | return IRQ_HANDLED; |
413 | } | |
414 | ||
55b28f9f | 415 | static int aha1542_queuecommand_lck(struct scsi_cmnd *cmd, void (*done) (struct scsi_cmnd *)) |
1da177e4 | 416 | { |
2906b3ce OZ |
417 | struct Scsi_Host *sh = cmd->device->host; |
418 | struct aha1542_hostdata *aha1542 = shost_priv(sh); | |
cb5b570c | 419 | u8 direction; |
55b28f9f OZ |
420 | u8 target = cmd->device->id; |
421 | u8 lun = cmd->device->lun; | |
1da177e4 | 422 | unsigned long flags; |
55b28f9f | 423 | int bufflen = scsi_bufflen(cmd); |
1da177e4 | 424 | int mbo; |
e98878f7 OZ |
425 | struct mailbox *mb = aha1542->mb; |
426 | struct ccb *ccb = aha1542->ccb; | |
fde1fb8a OZ |
427 | #ifdef DEBUG |
428 | int i; | |
1da177e4 | 429 | |
fde1fb8a OZ |
430 | if (target > 1) { |
431 | cmd->result = DID_TIME_OUT << 16; | |
432 | done(cmd); | |
433 | return 0; | |
434 | } | |
435 | #endif | |
55b28f9f | 436 | if (*cmd->cmnd == REQUEST_SENSE) { |
1da177e4 | 437 | /* Don't do the command - we have the sense data already */ |
55b28f9f OZ |
438 | cmd->result = 0; |
439 | done(cmd); | |
1da177e4 LT |
440 | return 0; |
441 | } | |
442 | #ifdef DEBUG | |
55b28f9f OZ |
443 | if (*cmd->cmnd == READ_10 || *cmd->cmnd == WRITE_10) |
444 | i = xscsi2int(cmd->cmnd + 2); | |
445 | else if (*cmd->cmnd == READ_6 || *cmd->cmnd == WRITE_6) | |
446 | i = scsi2int(cmd->cmnd + 2); | |
1da177e4 LT |
447 | else |
448 | i = -1; | |
449 | if (done) | |
2906b3ce | 450 | shost_printk(KERN_DEBUG, sh, "aha1542_queuecommand: dev %d cmd %02x pos %d len %d ", target, *cmd->cmnd, i, bufflen); |
1da177e4 | 451 | else |
2906b3ce OZ |
452 | shost_printk(KERN_DEBUG, sh, "aha1542_command: dev %d cmd %02x pos %d len %d ", target, *cmd->cmnd, i, bufflen); |
453 | shost_printk(KERN_DEBUG, sh, "aha1542_queuecommand: dumping scsi cmd:"); | |
55b28f9f OZ |
454 | for (i = 0; i < cmd->cmd_len; i++) |
455 | printk("%02x ", cmd->cmnd[i]); | |
1da177e4 | 456 | printk("\n"); |
55b28f9f | 457 | if (*cmd->cmnd == WRITE_10 || *cmd->cmnd == WRITE_6) |
1da177e4 LT |
458 | return 0; /* we are still testing, so *don't* write */ |
459 | #endif | |
460 | /* Use the outgoing mailboxes in a round-robin fashion, because this | |
461 | is how the host adapter will scan for them */ | |
462 | ||
463 | spin_lock_irqsave(&aha1542_lock, flags); | |
e98878f7 | 464 | mbo = aha1542->aha1542_last_mbo_used + 1; |
1da177e4 LT |
465 | if (mbo >= AHA1542_MAILBOXES) |
466 | mbo = 0; | |
467 | ||
468 | do { | |
55b28f9f | 469 | if (mb[mbo].status == 0 && aha1542->int_cmds[mbo] == NULL) |
1da177e4 LT |
470 | break; |
471 | mbo++; | |
472 | if (mbo >= AHA1542_MAILBOXES) | |
473 | mbo = 0; | |
e98878f7 | 474 | } while (mbo != aha1542->aha1542_last_mbo_used); |
1da177e4 | 475 | |
55b28f9f | 476 | if (mb[mbo].status || aha1542->int_cmds[mbo]) |
1da177e4 LT |
477 | panic("Unable to find empty mailbox for aha1542.\n"); |
478 | ||
55b28f9f | 479 | aha1542->int_cmds[mbo] = cmd; /* This will effectively prevent someone else from |
e98878f7 | 480 | screwing with this cdb. */ |
1da177e4 | 481 | |
e98878f7 | 482 | aha1542->aha1542_last_mbo_used = mbo; |
1da177e4 LT |
483 | spin_unlock_irqrestore(&aha1542_lock, flags); |
484 | ||
485 | #ifdef DEBUG | |
2906b3ce | 486 | shost_printk(KERN_DEBUG, sh, "Sending command (%d %x)...", mbo, done); |
1da177e4 LT |
487 | #endif |
488 | ||
10be6250 | 489 | any2scsi(mb[mbo].ccbptr, isa_virt_to_bus(&ccb[mbo])); /* This gets trashed for some reason */ |
1da177e4 LT |
490 | |
491 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
492 | ||
55b28f9f | 493 | ccb[mbo].cdblen = cmd->cmd_len; |
1da177e4 LT |
494 | |
495 | direction = 0; | |
55b28f9f | 496 | if (*cmd->cmnd == READ_10 || *cmd->cmnd == READ_6) |
1da177e4 | 497 | direction = 8; |
55b28f9f | 498 | else if (*cmd->cmnd == WRITE_10 || *cmd->cmnd == WRITE_6) |
1da177e4 LT |
499 | direction = 16; |
500 | ||
55b28f9f | 501 | memcpy(ccb[mbo].cdb, cmd->cmnd, ccb[mbo].cdblen); |
1da177e4 | 502 | |
fc3fdfcc | 503 | if (bufflen) { |
51cf2249 | 504 | struct scatterlist *sg; |
1da177e4 LT |
505 | struct chain *cptr; |
506 | #ifdef DEBUG | |
507 | unsigned char *ptr; | |
508 | #endif | |
55b28f9f | 509 | int i, sg_count = scsi_sg_count(cmd); |
1da177e4 | 510 | ccb[mbo].op = 2; /* SCSI Initiator Command w/scatter-gather */ |
55b28f9f | 511 | cmd->host_scribble = kmalloc(sizeof(*cptr)*sg_count, |
fc3fdfcc | 512 | GFP_KERNEL | GFP_DMA); |
55b28f9f | 513 | cptr = (struct chain *) cmd->host_scribble; |
1da177e4 LT |
514 | if (cptr == NULL) { |
515 | /* free the claimed mailbox slot */ | |
55b28f9f | 516 | aha1542->int_cmds[mbo] = NULL; |
1da177e4 LT |
517 | return SCSI_MLQUEUE_HOST_BUSY; |
518 | } | |
55b28f9f | 519 | scsi_for_each_sg(cmd, sg, sg_count, i) { |
10be6250 OZ |
520 | any2scsi(cptr[i].dataptr, isa_page_to_bus(sg_page(sg)) |
521 | + sg->offset); | |
51cf2249 | 522 | any2scsi(cptr[i].datalen, sg->length); |
1da177e4 | 523 | }; |
fc3fdfcc | 524 | any2scsi(ccb[mbo].datalen, sg_count * sizeof(struct chain)); |
10be6250 | 525 | any2scsi(ccb[mbo].dataptr, isa_virt_to_bus(cptr)); |
1da177e4 LT |
526 | #ifdef DEBUG |
527 | printk("cptr %x: ", cptr); | |
528 | ptr = (unsigned char *) cptr; | |
529 | for (i = 0; i < 18; i++) | |
530 | printk("%02x ", ptr[i]); | |
531 | #endif | |
532 | } else { | |
533 | ccb[mbo].op = 0; /* SCSI Initiator Command */ | |
55b28f9f | 534 | cmd->host_scribble = NULL; |
fc3fdfcc BH |
535 | any2scsi(ccb[mbo].datalen, 0); |
536 | any2scsi(ccb[mbo].dataptr, 0); | |
1da177e4 LT |
537 | }; |
538 | ccb[mbo].idlun = (target & 7) << 5 | direction | (lun & 7); /*SCSI Target Id */ | |
539 | ccb[mbo].rsalen = 16; | |
540 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
541 | ccb[mbo].commlinkid = 0; | |
542 | ||
543 | #ifdef DEBUG | |
544 | { | |
545 | int i; | |
2906b3ce | 546 | shost_printk(KERN_DEBUG, sh, "aha1542_command: sending.. "); |
1da177e4 | 547 | for (i = 0; i < sizeof(ccb[mbo]) - 10; i++) |
cb5b570c | 548 | printk("%02x ", ((u8 *) &ccb[mbo])[i]); |
1da177e4 LT |
549 | }; |
550 | #endif | |
551 | ||
552 | if (done) { | |
fde1fb8a OZ |
553 | #ifdef DEBUG |
554 | printk("aha1542_queuecommand: now waiting for interrupt "); | |
555 | #endif | |
55b28f9f | 556 | cmd->scsi_done = done; |
1da177e4 | 557 | mb[mbo].status = 1; |
55b28f9f | 558 | aha1542_outb(cmd->device->host->io_port, CMD_START_SCSI); |
1da177e4 LT |
559 | } else |
560 | printk("aha1542_queuecommand: done can't be NULL\n"); | |
561 | ||
562 | return 0; | |
563 | } | |
564 | ||
f281233d JG |
565 | static DEF_SCSI_QCMD(aha1542_queuecommand) |
566 | ||
1da177e4 | 567 | /* Initialize mailboxes */ |
68ea9de3 | 568 | static void setup_mailboxes(struct Scsi_Host *sh) |
1da177e4 | 569 | { |
c2532f68 | 570 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
1da177e4 | 571 | int i; |
e98878f7 OZ |
572 | struct mailbox *mb = aha1542->mb; |
573 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 | 574 | |
cad2fc72 | 575 | u8 mb_cmd[5] = { CMD_MBINIT, AHA1542_MAILBOXES, 0, 0, 0}; |
1da177e4 | 576 | |
1da177e4 LT |
577 | for (i = 0; i < AHA1542_MAILBOXES; i++) { |
578 | mb[i].status = mb[AHA1542_MAILBOXES + i].status = 0; | |
10be6250 | 579 | any2scsi(mb[i].ccbptr, isa_virt_to_bus(&ccb[i])); |
1da177e4 | 580 | }; |
68ea9de3 | 581 | aha1542_intr_reset(sh->io_port); /* reset interrupts, so they don't block */ |
cad2fc72 | 582 | any2scsi((mb_cmd + 2), isa_virt_to_bus(mb)); |
68ea9de3 | 583 | if (aha1542_out(sh->io_port, mb_cmd, 5)) |
2906b3ce | 584 | shost_printk(KERN_ERR, sh, "failed setting up mailboxes\n"); |
68ea9de3 | 585 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
586 | } |
587 | ||
68ea9de3 | 588 | static int aha1542_getconfig(struct Scsi_Host *sh) |
1da177e4 | 589 | { |
cb5b570c | 590 | u8 inquiry_result[3]; |
1da177e4 | 591 | int i; |
68ea9de3 | 592 | i = inb(STATUS(sh->io_port)); |
1da177e4 | 593 | if (i & DF) { |
68ea9de3 | 594 | i = inb(DATA(sh->io_port)); |
1da177e4 | 595 | }; |
68ea9de3 OZ |
596 | aha1542_outb(sh->io_port, CMD_RETCONF); |
597 | aha1542_in(sh->io_port, inquiry_result, 3, 0); | |
598 | if (!wait_mask(INTRFLAGS(sh->io_port), INTRMASK, HACC, 0, 0)) | |
2906b3ce | 599 | shost_printk(KERN_ERR, sh, "error querying board settings\n"); |
68ea9de3 | 600 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
601 | switch (inquiry_result[0]) { |
602 | case 0x80: | |
68ea9de3 | 603 | sh->dma_channel = 7; |
1da177e4 LT |
604 | break; |
605 | case 0x40: | |
68ea9de3 | 606 | sh->dma_channel = 6; |
1da177e4 LT |
607 | break; |
608 | case 0x20: | |
68ea9de3 | 609 | sh->dma_channel = 5; |
1da177e4 LT |
610 | break; |
611 | case 0x01: | |
68ea9de3 | 612 | sh->dma_channel = 0; |
1da177e4 LT |
613 | break; |
614 | case 0: | |
615 | /* This means that the adapter, although Adaptec 1542 compatible, doesn't use a DMA channel. | |
616 | Currently only aware of the BusLogic BT-445S VL-Bus adapter which needs this. */ | |
68ea9de3 | 617 | sh->dma_channel = 0xFF; |
1da177e4 LT |
618 | break; |
619 | default: | |
2906b3ce | 620 | shost_printk(KERN_ERR, sh, "Unable to determine DMA channel.\n"); |
1da177e4 LT |
621 | return -1; |
622 | }; | |
623 | switch (inquiry_result[1]) { | |
624 | case 0x40: | |
68ea9de3 | 625 | sh->irq = 15; |
1da177e4 LT |
626 | break; |
627 | case 0x20: | |
68ea9de3 | 628 | sh->irq = 14; |
1da177e4 LT |
629 | break; |
630 | case 0x8: | |
68ea9de3 | 631 | sh->irq = 12; |
1da177e4 LT |
632 | break; |
633 | case 0x4: | |
68ea9de3 | 634 | sh->irq = 11; |
1da177e4 LT |
635 | break; |
636 | case 0x2: | |
68ea9de3 | 637 | sh->irq = 10; |
1da177e4 LT |
638 | break; |
639 | case 0x1: | |
68ea9de3 | 640 | sh->irq = 9; |
1da177e4 LT |
641 | break; |
642 | default: | |
2906b3ce | 643 | shost_printk(KERN_ERR, sh, "Unable to determine IRQ level.\n"); |
1da177e4 LT |
644 | return -1; |
645 | }; | |
68ea9de3 | 646 | sh->this_id = inquiry_result[2] & 7; |
1da177e4 LT |
647 | return 0; |
648 | } | |
649 | ||
650 | /* This function should only be called for 1542C boards - we can detect | |
651 | the special firmware settings and unlock the board */ | |
652 | ||
68ea9de3 | 653 | static int aha1542_mbenable(struct Scsi_Host *sh) |
1da177e4 | 654 | { |
cb5b570c OZ |
655 | static u8 mbenable_cmd[3]; |
656 | static u8 mbenable_result[2]; | |
1da177e4 LT |
657 | int retval; |
658 | ||
659 | retval = BIOS_TRANSLATION_6432; | |
660 | ||
68ea9de3 OZ |
661 | aha1542_outb(sh->io_port, CMD_EXTBIOS); |
662 | if (aha1542_in(sh->io_port, mbenable_result, 2, 100)) | |
1da177e4 | 663 | return retval; |
68ea9de3 | 664 | if (!wait_mask(INTRFLAGS(sh->io_port), INTRMASK, HACC, 0, 100)) |
2093bfa1 | 665 | goto fail; |
68ea9de3 | 666 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
667 | |
668 | if ((mbenable_result[0] & 0x08) || mbenable_result[1]) { | |
669 | mbenable_cmd[0] = CMD_MBENABLE; | |
670 | mbenable_cmd[1] = 0; | |
671 | mbenable_cmd[2] = mbenable_result[1]; | |
672 | ||
673 | if ((mbenable_result[0] & 0x08) && (mbenable_result[1] & 0x03)) | |
674 | retval = BIOS_TRANSLATION_25563; | |
675 | ||
68ea9de3 | 676 | if (aha1542_out(sh->io_port, mbenable_cmd, 3)) |
2093bfa1 | 677 | goto fail; |
1da177e4 LT |
678 | }; |
679 | while (0) { | |
680 | fail: | |
2906b3ce | 681 | shost_printk(KERN_ERR, sh, "Mailbox init failed\n"); |
1da177e4 | 682 | } |
68ea9de3 | 683 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
684 | return retval; |
685 | } | |
686 | ||
687 | /* Query the board to find out if it is a 1542 or a 1740, or whatever. */ | |
68ea9de3 | 688 | static int aha1542_query(struct Scsi_Host *sh) |
1da177e4 | 689 | { |
68ea9de3 | 690 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
cb5b570c | 691 | u8 inquiry_result[4]; |
1da177e4 | 692 | int i; |
68ea9de3 | 693 | i = inb(STATUS(sh->io_port)); |
1da177e4 | 694 | if (i & DF) { |
68ea9de3 | 695 | i = inb(DATA(sh->io_port)); |
1da177e4 | 696 | }; |
68ea9de3 OZ |
697 | aha1542_outb(sh->io_port, CMD_INQUIRY); |
698 | aha1542_in(sh->io_port, inquiry_result, 4, 0); | |
699 | if (!wait_mask(INTRFLAGS(sh->io_port), INTRMASK, HACC, 0, 0)) | |
2906b3ce | 700 | shost_printk(KERN_ERR, sh, "error querying card type\n"); |
68ea9de3 | 701 | aha1542_intr_reset(sh->io_port); |
1da177e4 | 702 | |
68ea9de3 | 703 | aha1542->bios_translation = BIOS_TRANSLATION_6432; /* Default case */ |
1da177e4 LT |
704 | |
705 | /* For an AHA1740 series board, we ignore the board since there is a | |
706 | hardware bug which can lead to wrong blocks being returned if the board | |
707 | is operating in the 1542 emulation mode. Since there is an extended mode | |
708 | driver, we simply ignore the board and let the 1740 driver pick it up. | |
709 | */ | |
710 | ||
711 | if (inquiry_result[0] == 0x43) { | |
2906b3ce | 712 | shost_printk(KERN_INFO, sh, "Emulation mode not supported for AHA-1740 hardware, use aha1740 driver instead.\n"); |
1da177e4 LT |
713 | return 1; |
714 | }; | |
715 | ||
716 | /* Always call this - boards that do not support extended bios translation | |
717 | will ignore the command, and we will set the proper default */ | |
718 | ||
68ea9de3 | 719 | aha1542->bios_translation = aha1542_mbenable(sh); |
1da177e4 LT |
720 | |
721 | return 0; | |
722 | } | |
723 | ||
f71429ab | 724 | static u8 dma_speed_hw(int dma_speed) |
1da177e4 | 725 | { |
f71429ab OZ |
726 | switch (dma_speed) { |
727 | case 5: | |
728 | return 0x00; | |
729 | case 6: | |
730 | return 0x04; | |
731 | case 7: | |
732 | return 0x01; | |
733 | case 8: | |
734 | return 0x02; | |
735 | case 10: | |
736 | return 0x03; | |
1da177e4 | 737 | } |
1da177e4 | 738 | |
f71429ab | 739 | return 0xff; /* invalid */ |
1da177e4 LT |
740 | } |
741 | ||
f71429ab | 742 | /* Set the Bus on/off-times as not to ruin floppy performance */ |
37d607bd | 743 | static void aha1542_set_bus_times(struct Scsi_Host *sh, int bus_on, int bus_off, int dma_speed) |
1da177e4 | 744 | { |
37d607bd OZ |
745 | if (bus_on > 0) { |
746 | u8 oncmd[] = { CMD_BUSON_TIME, clamp(bus_on, 2, 15) }; | |
1da177e4 | 747 | |
37d607bd OZ |
748 | aha1542_intr_reset(sh->io_port); |
749 | if (aha1542_out(sh->io_port, oncmd, 2)) | |
f71429ab OZ |
750 | goto fail; |
751 | } | |
1da177e4 | 752 | |
37d607bd OZ |
753 | if (bus_off > 0) { |
754 | u8 offcmd[] = { CMD_BUSOFF_TIME, clamp(bus_off, 1, 64) }; | |
1da177e4 | 755 | |
37d607bd OZ |
756 | aha1542_intr_reset(sh->io_port); |
757 | if (aha1542_out(sh->io_port, offcmd, 2)) | |
f71429ab OZ |
758 | goto fail; |
759 | } | |
1da177e4 | 760 | |
37d607bd OZ |
761 | if (dma_speed_hw(dma_speed) != 0xff) { |
762 | u8 dmacmd[] = { CMD_DMASPEED, dma_speed_hw(dma_speed) }; | |
b847fd0d | 763 | |
37d607bd OZ |
764 | aha1542_intr_reset(sh->io_port); |
765 | if (aha1542_out(sh->io_port, dmacmd, 2)) | |
b847fd0d OZ |
766 | goto fail; |
767 | } | |
37d607bd | 768 | aha1542_intr_reset(sh->io_port); |
b847fd0d OZ |
769 | return; |
770 | fail: | |
2906b3ce | 771 | shost_printk(KERN_ERR, sh, "setting bus on/off-time failed\n"); |
37d607bd | 772 | aha1542_intr_reset(sh->io_port); |
b847fd0d OZ |
773 | } |
774 | ||
1da177e4 | 775 | /* return non-zero on detection */ |
643a7c43 | 776 | static struct Scsi_Host *aha1542_hw_init(struct scsi_host_template *tpnt, struct device *pdev, int indx) |
1da177e4 | 777 | { |
f71429ab | 778 | unsigned int base_io = io[indx]; |
c2532f68 | 779 | struct Scsi_Host *sh; |
e98878f7 | 780 | struct aha1542_hostdata *aha1542; |
2906b3ce | 781 | char dma_info[] = "no DMA"; |
1da177e4 | 782 | |
3a70c006 OZ |
783 | if (base_io == 0) |
784 | return NULL; | |
1da177e4 | 785 | |
3a70c006 OZ |
786 | if (!request_region(base_io, AHA1542_REGION_SIZE, "aha1542")) |
787 | return NULL; | |
1da177e4 | 788 | |
c2532f68 OZ |
789 | sh = scsi_host_alloc(tpnt, sizeof(struct aha1542_hostdata)); |
790 | if (!sh) | |
3a70c006 | 791 | goto release; |
c2532f68 | 792 | aha1542 = shost_priv(sh); |
b847fd0d | 793 | |
68ea9de3 OZ |
794 | sh->unique_id = base_io; |
795 | sh->io_port = base_io; | |
796 | sh->n_io_port = AHA1542_REGION_SIZE; | |
797 | aha1542->aha1542_last_mbi_used = 2 * AHA1542_MAILBOXES - 1; | |
798 | aha1542->aha1542_last_mbo_used = AHA1542_MAILBOXES - 1; | |
799 | ||
800 | if (!aha1542_test_port(sh)) | |
3a70c006 | 801 | goto unregister; |
1da177e4 | 802 | |
37d607bd | 803 | aha1542_set_bus_times(sh, bus_on[indx], bus_off[indx], dma_speed[indx]); |
68ea9de3 | 804 | if (aha1542_query(sh)) |
3a70c006 | 805 | goto unregister; |
68ea9de3 | 806 | if (aha1542_getconfig(sh) == -1) |
3a70c006 | 807 | goto unregister; |
1da177e4 | 808 | |
c2532f68 | 809 | if (sh->dma_channel != 0xFF) |
2906b3ce OZ |
810 | snprintf(dma_info, sizeof(dma_info), "DMA %d", sh->dma_channel); |
811 | shost_printk(KERN_INFO, sh, "Adaptec AHA-1542 (SCSI-ID %d) at IO 0x%x, IRQ %d, %s\n", | |
812 | sh->this_id, base_io, sh->irq, dma_info); | |
3a70c006 | 813 | if (aha1542->bios_translation == BIOS_TRANSLATION_25563) |
2906b3ce | 814 | shost_printk(KERN_INFO, sh, "Using extended bios translation\n"); |
1da177e4 | 815 | |
68ea9de3 | 816 | setup_mailboxes(sh); |
1da177e4 | 817 | |
c2532f68 OZ |
818 | if (request_irq(sh->irq, do_aha1542_intr_handle, 0, |
819 | "aha1542", sh)) { | |
2906b3ce | 820 | shost_printk(KERN_ERR, sh, "Unable to allocate IRQ.\n"); |
3a70c006 OZ |
821 | goto unregister; |
822 | } | |
c2532f68 OZ |
823 | if (sh->dma_channel != 0xFF) { |
824 | if (request_dma(sh->dma_channel, "aha1542")) { | |
2906b3ce | 825 | shost_printk(KERN_ERR, sh, "Unable to allocate DMA channel.\n"); |
3a70c006 OZ |
826 | goto free_irq; |
827 | } | |
c2532f68 OZ |
828 | if (sh->dma_channel == 0 || sh->dma_channel >= 5) { |
829 | set_dma_mode(sh->dma_channel, DMA_MODE_CASCADE); | |
830 | enable_dma(sh->dma_channel); | |
3a70c006 OZ |
831 | } |
832 | } | |
1da177e4 | 833 | |
c2532f68 | 834 | if (scsi_add_host(sh, pdev)) |
3a70c006 | 835 | goto free_dma; |
1da177e4 | 836 | |
c2532f68 | 837 | scsi_scan_host(sh); |
1da177e4 | 838 | |
c2532f68 | 839 | return sh; |
3a70c006 | 840 | free_dma: |
c2532f68 OZ |
841 | if (sh->dma_channel != 0xff) |
842 | free_dma(sh->dma_channel); | |
3a70c006 | 843 | free_irq: |
c2532f68 | 844 | free_irq(sh->irq, sh); |
3a70c006 | 845 | unregister: |
c2532f68 | 846 | scsi_host_put(sh); |
3a70c006 OZ |
847 | release: |
848 | release_region(base_io, AHA1542_REGION_SIZE); | |
1da177e4 | 849 | |
643a7c43 | 850 | return NULL; |
1da177e4 LT |
851 | } |
852 | ||
c2532f68 | 853 | static int aha1542_release(struct Scsi_Host *sh) |
1da177e4 | 854 | { |
c2532f68 OZ |
855 | scsi_remove_host(sh); |
856 | if (sh->dma_channel != 0xff) | |
857 | free_dma(sh->dma_channel); | |
858 | if (sh->irq) | |
859 | free_irq(sh->irq, sh); | |
860 | if (sh->io_port && sh->n_io_port) | |
861 | release_region(sh->io_port, sh->n_io_port); | |
862 | scsi_host_put(sh); | |
1da177e4 LT |
863 | return 0; |
864 | } | |
865 | ||
1da177e4 | 866 | |
1da177e4 LT |
867 | /* |
868 | * This is a device reset. This is handled by sending a special command | |
869 | * to the device. | |
870 | */ | |
55b28f9f | 871 | static int aha1542_dev_reset(struct scsi_cmnd *cmd) |
1da177e4 | 872 | { |
55b28f9f | 873 | struct aha1542_hostdata *aha1542 = shost_priv(cmd->device->host); |
1da177e4 | 874 | unsigned long flags; |
e98878f7 | 875 | struct mailbox *mb = aha1542->mb; |
55b28f9f OZ |
876 | u8 target = cmd->device->id; |
877 | u8 lun = cmd->device->lun; | |
1da177e4 | 878 | int mbo; |
e98878f7 | 879 | struct ccb *ccb = aha1542->ccb; |
1da177e4 | 880 | |
1da177e4 | 881 | spin_lock_irqsave(&aha1542_lock, flags); |
e98878f7 | 882 | mbo = aha1542->aha1542_last_mbo_used + 1; |
1da177e4 LT |
883 | if (mbo >= AHA1542_MAILBOXES) |
884 | mbo = 0; | |
885 | ||
886 | do { | |
55b28f9f | 887 | if (mb[mbo].status == 0 && aha1542->int_cmds[mbo] == NULL) |
1da177e4 LT |
888 | break; |
889 | mbo++; | |
890 | if (mbo >= AHA1542_MAILBOXES) | |
891 | mbo = 0; | |
e98878f7 | 892 | } while (mbo != aha1542->aha1542_last_mbo_used); |
1da177e4 | 893 | |
55b28f9f | 894 | if (mb[mbo].status || aha1542->int_cmds[mbo]) |
1da177e4 LT |
895 | panic("Unable to find empty mailbox for aha1542.\n"); |
896 | ||
55b28f9f | 897 | aha1542->int_cmds[mbo] = cmd; /* This will effectively |
e98878f7 OZ |
898 | prevent someone else from |
899 | screwing with this cdb. */ | |
1da177e4 | 900 | |
e98878f7 | 901 | aha1542->aha1542_last_mbo_used = mbo; |
1da177e4 LT |
902 | spin_unlock_irqrestore(&aha1542_lock, flags); |
903 | ||
10be6250 | 904 | any2scsi(mb[mbo].ccbptr, isa_virt_to_bus(&ccb[mbo])); /* This gets trashed for some reason */ |
1da177e4 LT |
905 | |
906 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
907 | ||
908 | ccb[mbo].op = 0x81; /* BUS DEVICE RESET */ | |
909 | ||
910 | ccb[mbo].idlun = (target & 7) << 5 | (lun & 7); /*SCSI Target Id */ | |
911 | ||
912 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
913 | ccb[mbo].commlinkid = 0; | |
914 | ||
915 | /* | |
916 | * Now tell the 1542 to flush all pending commands for this | |
917 | * target | |
918 | */ | |
55b28f9f | 919 | aha1542_outb(cmd->device->host->io_port, CMD_START_SCSI); |
1da177e4 | 920 | |
55b28f9f | 921 | scmd_printk(KERN_WARNING, cmd, |
017560fc | 922 | "Trying device reset for target\n"); |
1da177e4 LT |
923 | |
924 | return SUCCESS; | |
1da177e4 LT |
925 | } |
926 | ||
55b28f9f | 927 | static int aha1542_reset(struct scsi_cmnd *cmd, u8 reset_cmd) |
1da177e4 | 928 | { |
55b28f9f | 929 | struct aha1542_hostdata *aha1542 = shost_priv(cmd->device->host); |
1da177e4 LT |
930 | int i; |
931 | ||
932 | /* | |
933 | * This does a scsi reset for all devices on the bus. | |
934 | * In principle, we could also reset the 1542 - should | |
935 | * we do this? Try this first, and we can add that later | |
936 | * if it turns out to be useful. | |
937 | */ | |
55b28f9f | 938 | outb(reset_cmd, CONTROL(cmd->device->host->io_port)); |
1da177e4 LT |
939 | |
940 | /* | |
941 | * Wait for the thing to settle down a bit. Unfortunately | |
942 | * this is going to basically lock up the machine while we | |
943 | * wait for this to complete. To be 100% correct, we need to | |
944 | * check for timeout, and if we are doing something like this | |
945 | * we are pretty desperate anyways. | |
946 | */ | |
1da177e4 | 947 | ssleep(4); |
55b28f9f | 948 | spin_lock_irq(cmd->device->host->host_lock); |
1da177e4 | 949 | |
55b28f9f | 950 | if (!wait_mask(STATUS(cmd->device->host->io_port), |
a13b3722 | 951 | STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0)) { |
55b28f9f | 952 | spin_unlock_irq(cmd->device->host->host_lock); |
a13b3722 OZ |
953 | return FAILED; |
954 | } | |
8537cba8 OZ |
955 | /* |
956 | * We need to do this too before the 1542 can interact with | |
957 | * us again after host reset. | |
958 | */ | |
959 | if (reset_cmd & HRST) | |
68ea9de3 | 960 | setup_mailboxes(cmd->device->host); |
1da177e4 LT |
961 | /* |
962 | * Now try to pick up the pieces. For all pending commands, | |
963 | * free any internal data structures, and basically clear things | |
964 | * out. We do not try and restart any commands or anything - | |
965 | * the strategy handler takes care of that crap. | |
966 | */ | |
2906b3ce | 967 | shost_printk(KERN_WARNING, cmd->device->host, "Sent BUS RESET to scsi host %d\n", cmd->device->host->host_no); |
1da177e4 LT |
968 | |
969 | for (i = 0; i < AHA1542_MAILBOXES; i++) { | |
55b28f9f OZ |
970 | if (aha1542->int_cmds[i] != NULL) { |
971 | struct scsi_cmnd *tmp_cmd; | |
972 | tmp_cmd = aha1542->int_cmds[i]; | |
1da177e4 | 973 | |
55b28f9f | 974 | if (tmp_cmd->device->soft_reset) { |
1da177e4 LT |
975 | /* |
976 | * If this device implements the soft reset option, | |
977 | * then it is still holding onto the command, and | |
978 | * may yet complete it. In this case, we don't | |
979 | * flush the data. | |
980 | */ | |
981 | continue; | |
982 | } | |
55b28f9f OZ |
983 | kfree(tmp_cmd->host_scribble); |
984 | tmp_cmd->host_scribble = NULL; | |
985 | aha1542->int_cmds[i] = NULL; | |
e98878f7 | 986 | aha1542->mb[i].status = 0; |
1da177e4 LT |
987 | } |
988 | } | |
989 | ||
55b28f9f | 990 | spin_unlock_irq(cmd->device->host->host_lock); |
1da177e4 | 991 | return SUCCESS; |
1da177e4 LT |
992 | } |
993 | ||
55b28f9f | 994 | static int aha1542_bus_reset(struct scsi_cmnd *cmd) |
1da177e4 | 995 | { |
55b28f9f | 996 | return aha1542_reset(cmd, SCRST); |
8537cba8 | 997 | } |
1da177e4 | 998 | |
55b28f9f | 999 | static int aha1542_host_reset(struct scsi_cmnd *cmd) |
8537cba8 | 1000 | { |
55b28f9f | 1001 | return aha1542_reset(cmd, HRST | SCRST); |
1da177e4 LT |
1002 | } |
1003 | ||
1da177e4 | 1004 | static int aha1542_biosparam(struct scsi_device *sdev, |
17787a09 | 1005 | struct block_device *bdev, sector_t capacity, int geom[]) |
1da177e4 | 1006 | { |
e98878f7 | 1007 | struct aha1542_hostdata *aha1542 = shost_priv(sdev->host); |
1da177e4 | 1008 | |
17787a09 OZ |
1009 | if (capacity >= 0x200000 && |
1010 | aha1542->bios_translation == BIOS_TRANSLATION_25563) { | |
1da177e4 | 1011 | /* Please verify that this is the same as what DOS returns */ |
17787a09 OZ |
1012 | geom[0] = 255; /* heads */ |
1013 | geom[1] = 63; /* sectors */ | |
1da177e4 | 1014 | } else { |
17787a09 OZ |
1015 | geom[0] = 64; /* heads */ |
1016 | geom[1] = 32; /* sectors */ | |
1da177e4 | 1017 | } |
17787a09 | 1018 | geom[2] = sector_div(capacity, geom[0] * geom[1]); /* cylinders */ |
1da177e4 LT |
1019 | |
1020 | return 0; | |
1021 | } | |
1022 | MODULE_LICENSE("GPL"); | |
1023 | ||
d0be4a7d | 1024 | static struct scsi_host_template driver_template = { |
643a7c43 | 1025 | .module = THIS_MODULE, |
1da177e4 LT |
1026 | .proc_name = "aha1542", |
1027 | .name = "Adaptec 1542", | |
1da177e4 | 1028 | .queuecommand = aha1542_queuecommand, |
1da177e4 LT |
1029 | .eh_device_reset_handler= aha1542_dev_reset, |
1030 | .eh_bus_reset_handler = aha1542_bus_reset, | |
1031 | .eh_host_reset_handler = aha1542_host_reset, | |
1032 | .bios_param = aha1542_biosparam, | |
1033 | .can_queue = AHA1542_MAILBOXES, | |
1034 | .this_id = 7, | |
10be6250 OZ |
1035 | .sg_tablesize = 16, |
1036 | .cmd_per_lun = 1, | |
1da177e4 LT |
1037 | .unchecked_isa_dma = 1, |
1038 | .use_clustering = ENABLE_CLUSTERING, | |
1039 | }; | |
643a7c43 OZ |
1040 | |
1041 | static int aha1542_isa_match(struct device *pdev, unsigned int ndev) | |
1042 | { | |
1043 | struct Scsi_Host *sh = aha1542_hw_init(&driver_template, pdev, ndev); | |
1044 | ||
1045 | if (!sh) | |
1046 | return 0; | |
1047 | ||
1048 | dev_set_drvdata(pdev, sh); | |
1049 | return 1; | |
1050 | } | |
1051 | ||
1052 | static int aha1542_isa_remove(struct device *pdev, | |
1053 | unsigned int ndev) | |
1054 | { | |
1055 | aha1542_release(dev_get_drvdata(pdev)); | |
1056 | dev_set_drvdata(pdev, NULL); | |
1057 | return 0; | |
1058 | } | |
1059 | ||
1060 | static struct isa_driver aha1542_isa_driver = { | |
1061 | .match = aha1542_isa_match, | |
1062 | .remove = aha1542_isa_remove, | |
1063 | .driver = { | |
1064 | .name = "aha1542" | |
1065 | }, | |
1066 | }; | |
1067 | static int isa_registered; | |
1068 | ||
1069 | #ifdef CONFIG_PNP | |
1070 | static struct pnp_device_id aha1542_pnp_ids[] = { | |
1071 | { .id = "ADP1542" }, | |
1072 | { .id = "" } | |
1073 | }; | |
1074 | MODULE_DEVICE_TABLE(pnp, aha1542_pnp_ids); | |
1075 | ||
1076 | static int aha1542_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *id) | |
1077 | { | |
1078 | int indx; | |
1079 | struct Scsi_Host *sh; | |
1080 | ||
f71429ab OZ |
1081 | for (indx = 0; indx < ARRAY_SIZE(io); indx++) { |
1082 | if (io[indx]) | |
643a7c43 OZ |
1083 | continue; |
1084 | ||
1085 | if (pnp_activate_dev(pdev) < 0) | |
1086 | continue; | |
1087 | ||
f71429ab | 1088 | io[indx] = pnp_port_start(pdev, 0); |
643a7c43 OZ |
1089 | |
1090 | /* The card can be queried for its DMA, we have | |
1091 | the DMA set up that is enough */ | |
1092 | ||
2906b3ce | 1093 | dev_info(&pdev->dev, "ISAPnP found an AHA1535 at I/O 0x%03X", io[indx]); |
643a7c43 OZ |
1094 | } |
1095 | ||
1096 | sh = aha1542_hw_init(&driver_template, &pdev->dev, indx); | |
1097 | if (!sh) | |
1098 | return -ENODEV; | |
1099 | ||
1100 | pnp_set_drvdata(pdev, sh); | |
1101 | return 0; | |
1102 | } | |
1103 | ||
1104 | static void aha1542_pnp_remove(struct pnp_dev *pdev) | |
1105 | { | |
1106 | aha1542_release(pnp_get_drvdata(pdev)); | |
1107 | pnp_set_drvdata(pdev, NULL); | |
1108 | } | |
1109 | ||
1110 | static struct pnp_driver aha1542_pnp_driver = { | |
1111 | .name = "aha1542", | |
1112 | .id_table = aha1542_pnp_ids, | |
1113 | .probe = aha1542_pnp_probe, | |
1114 | .remove = aha1542_pnp_remove, | |
1115 | }; | |
1116 | static int pnp_registered; | |
1117 | #endif /* CONFIG_PNP */ | |
1118 | ||
1119 | static int __init aha1542_init(void) | |
1120 | { | |
1121 | int ret = 0; | |
643a7c43 OZ |
1122 | |
1123 | #ifdef CONFIG_PNP | |
1124 | if (isapnp) { | |
1125 | ret = pnp_register_driver(&aha1542_pnp_driver); | |
1126 | if (!ret) | |
1127 | pnp_registered = 1; | |
1128 | } | |
1129 | #endif | |
1130 | ret = isa_register_driver(&aha1542_isa_driver, MAXBOARDS); | |
1131 | if (!ret) | |
1132 | isa_registered = 1; | |
1133 | ||
1134 | #ifdef CONFIG_PNP | |
1135 | if (pnp_registered) | |
1136 | ret = 0; | |
1137 | #endif | |
1138 | if (isa_registered) | |
1139 | ret = 0; | |
1140 | ||
1141 | return ret; | |
1142 | } | |
1143 | ||
1144 | static void __exit aha1542_exit(void) | |
1145 | { | |
1146 | #ifdef CONFIG_PNP | |
1147 | if (pnp_registered) | |
1148 | pnp_unregister_driver(&aha1542_pnp_driver); | |
1149 | #endif | |
1150 | if (isa_registered) | |
1151 | isa_unregister_driver(&aha1542_isa_driver); | |
1152 | } | |
1153 | ||
1154 | module_init(aha1542_init); | |
1155 | module_exit(aha1542_exit); |