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 | ||
f1bbef63 OZ |
65 | static inline void aha1542_intr_reset(u16 base) |
66 | { | |
67 | outb(IRST, CONTROL(base)); | |
68 | } | |
1da177e4 | 69 | |
2093bfa1 OZ |
70 | static inline bool wait_mask(u16 port, u8 mask, u8 allof, u8 noneof, int timeout) |
71 | { | |
72 | bool delayed = true; | |
73 | ||
74 | if (timeout == 0) { | |
75 | timeout = 3000000; | |
76 | delayed = false; | |
77 | } | |
78 | ||
79 | while (1) { | |
80 | u8 bits = inb(port) & mask; | |
81 | if ((bits & allof) == allof && ((bits & noneof) == 0)) | |
82 | break; | |
83 | if (delayed) | |
84 | mdelay(1); | |
85 | if (--timeout == 0) | |
86 | return false; | |
87 | } | |
88 | ||
89 | return true; | |
90 | } | |
1da177e4 | 91 | |
cad2fc72 | 92 | static int aha1542_outb(unsigned int base, u8 val) |
1da177e4 | 93 | { |
eef77801 OZ |
94 | if (!wait_mask(STATUS(base), CDF, 0, CDF, 0)) |
95 | return 1; | |
96 | outb(val, DATA(base)); | |
97 | ||
98 | return 0; | |
0c2b6481 OZ |
99 | } |
100 | ||
cad2fc72 | 101 | static int aha1542_out(unsigned int base, u8 *buf, int len) |
0c2b6481 | 102 | { |
0c2b6481 | 103 | while (len--) { |
1b0224b0 | 104 | if (!wait_mask(STATUS(base), CDF, 0, CDF, 0)) |
0c2b6481 | 105 | return 1; |
cad2fc72 | 106 | outb(*buf++, DATA(base)); |
0c2b6481 | 107 | } |
23e6940a OZ |
108 | if (!wait_mask(INTRFLAGS(base), INTRMASK, HACC, 0, 0)) |
109 | return 1; | |
0c2b6481 | 110 | |
1da177e4 | 111 | return 0; |
1da177e4 LT |
112 | } |
113 | ||
114 | /* Only used at boot time, so we do not need to worry about latency as much | |
115 | here */ | |
116 | ||
cad2fc72 | 117 | static int aha1542_in(unsigned int base, u8 *buf, int len, int timeout) |
1da177e4 | 118 | { |
1da177e4 | 119 | while (len--) { |
1b0224b0 | 120 | if (!wait_mask(STATUS(base), DF, DF, 0, timeout)) |
a13b3722 | 121 | return 1; |
cad2fc72 | 122 | *buf++ = inb(DATA(base)); |
1da177e4 | 123 | } |
1da177e4 | 124 | return 0; |
1da177e4 LT |
125 | } |
126 | ||
127 | static int makecode(unsigned hosterr, unsigned scsierr) | |
128 | { | |
129 | switch (hosterr) { | |
130 | case 0x0: | |
131 | case 0xa: /* Linked command complete without error and linked normally */ | |
132 | case 0xb: /* Linked command complete without error, interrupt generated */ | |
133 | hosterr = 0; | |
134 | break; | |
135 | ||
136 | case 0x11: /* Selection time out-The initiator selection or target | |
137 | reselection was not complete within the SCSI Time out period */ | |
138 | hosterr = DID_TIME_OUT; | |
139 | break; | |
140 | ||
141 | case 0x12: /* Data overrun/underrun-The target attempted to transfer more data | |
142 | than was allocated by the Data Length field or the sum of the | |
143 | Scatter / Gather Data Length fields. */ | |
144 | ||
145 | case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */ | |
146 | ||
147 | case 0x15: /* MBO command was not 00, 01 or 02-The first byte of the CB was | |
148 | invalid. This usually indicates a software failure. */ | |
149 | ||
150 | case 0x16: /* Invalid CCB Operation Code-The first byte of the CCB was invalid. | |
151 | This usually indicates a software failure. */ | |
152 | ||
153 | case 0x17: /* Linked CCB does not have the same LUN-A subsequent CCB of a set | |
154 | of linked CCB's does not specify the same logical unit number as | |
155 | the first. */ | |
156 | case 0x18: /* Invalid Target Direction received from Host-The direction of a | |
157 | Target Mode CCB was invalid. */ | |
158 | ||
159 | case 0x19: /* Duplicate CCB Received in Target Mode-More than once CCB was | |
160 | received to service data transfer between the same target LUN | |
161 | and initiator SCSI ID in the same direction. */ | |
162 | ||
163 | case 0x1a: /* Invalid CCB or Segment List Parameter-A segment list with a zero | |
164 | length segment or invalid segment list boundaries was received. | |
165 | A CCB parameter was invalid. */ | |
fde1fb8a OZ |
166 | #ifdef DEBUG |
167 | printk("Aha1542: %x %x\n", hosterr, scsierr); | |
168 | #endif | |
1da177e4 LT |
169 | hosterr = DID_ERROR; /* Couldn't find any better */ |
170 | break; | |
171 | ||
172 | case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus | |
173 | phase sequence was requested by the target. The host adapter | |
174 | will generate a SCSI Reset Condition, notifying the host with | |
175 | a SCRD interrupt */ | |
176 | hosterr = DID_RESET; | |
177 | break; | |
178 | default: | |
179 | printk(KERN_ERR "aha1542: makecode: unknown hoststatus %x\n", hosterr); | |
180 | break; | |
181 | } | |
182 | return scsierr | (hosterr << 16); | |
183 | } | |
184 | ||
68ea9de3 | 185 | static int aha1542_test_port(struct Scsi_Host *sh) |
1da177e4 | 186 | { |
cb5b570c | 187 | u8 inquiry_result[4]; |
cad2fc72 | 188 | int i; |
1da177e4 LT |
189 | |
190 | /* Quick and dirty test for presence of the card. */ | |
68ea9de3 | 191 | if (inb(STATUS(sh->io_port)) == 0xff) |
1da177e4 LT |
192 | return 0; |
193 | ||
194 | /* Reset the adapter. I ought to make a hard reset, but it's not really necessary */ | |
195 | ||
1da177e4 | 196 | /* In case some other card was probing here, reset interrupts */ |
68ea9de3 | 197 | aha1542_intr_reset(sh->io_port); /* reset interrupts, so they don't block */ |
1da177e4 | 198 | |
68ea9de3 | 199 | outb(SRST | IRST /*|SCRST */ , CONTROL(sh->io_port)); |
1da177e4 LT |
200 | |
201 | mdelay(20); /* Wait a little bit for things to settle down. */ | |
202 | ||
1da177e4 | 203 | /* Expect INIT and IDLE, any of the others are bad */ |
68ea9de3 | 204 | if (!wait_mask(STATUS(sh->io_port), STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0)) |
a13b3722 | 205 | return 0; |
1da177e4 | 206 | |
1da177e4 | 207 | /* Shouldn't have generated any interrupts during reset */ |
68ea9de3 | 208 | if (inb(INTRFLAGS(sh->io_port)) & INTRMASK) |
a13b3722 | 209 | return 0; |
1da177e4 | 210 | |
1da177e4 LT |
211 | /* Perform a host adapter inquiry instead so we do not need to set |
212 | up the mailboxes ahead of time */ | |
213 | ||
68ea9de3 | 214 | aha1542_outb(sh->io_port, CMD_INQUIRY); |
1da177e4 | 215 | |
cad2fc72 | 216 | for (i = 0; i < 4; i++) { |
68ea9de3 | 217 | if (!wait_mask(STATUS(sh->io_port), DF, DF, 0, 0)) |
a13b3722 | 218 | return 0; |
68ea9de3 | 219 | inquiry_result[i] = inb(DATA(sh->io_port)); |
1da177e4 LT |
220 | } |
221 | ||
1da177e4 | 222 | /* Reading port should reset DF */ |
68ea9de3 | 223 | if (inb(STATUS(sh->io_port)) & DF) |
a13b3722 | 224 | return 0; |
1da177e4 | 225 | |
1da177e4 | 226 | /* When HACC, command is completed, and we're though testing */ |
68ea9de3 | 227 | if (!wait_mask(INTRFLAGS(sh->io_port), HACC, HACC, 0, 0)) |
a13b3722 | 228 | return 0; |
1da177e4 | 229 | |
1da177e4 | 230 | /* Clear interrupts */ |
68ea9de3 | 231 | outb(IRST, CONTROL(sh->io_port)); |
1da177e4 | 232 | |
bdebe224 | 233 | return 1; |
1da177e4 LT |
234 | } |
235 | ||
1b0224b0 | 236 | static irqreturn_t aha1542_interrupt(int irq, void *dev_id) |
1da177e4 | 237 | { |
1b0224b0 | 238 | struct Scsi_Host *sh = dev_id; |
c2532f68 | 239 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
55b28f9f | 240 | void (*my_done)(struct scsi_cmnd *) = NULL; |
1da177e4 LT |
241 | int errstatus, mbi, mbo, mbistatus; |
242 | int number_serviced; | |
243 | unsigned long flags; | |
55b28f9f | 244 | struct scsi_cmnd *tmp_cmd; |
1da177e4 | 245 | int flag; |
e98878f7 OZ |
246 | struct mailbox *mb = aha1542->mb; |
247 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 LT |
248 | |
249 | #ifdef DEBUG | |
250 | { | |
c2532f68 | 251 | flag = inb(INTRFLAGS(sh->io_port)); |
2906b3ce | 252 | shost_printk(KERN_DEBUG, sh, "aha1542_intr_handle: "); |
1da177e4 LT |
253 | if (!(flag & ANYINTR)) |
254 | printk("no interrupt?"); | |
255 | if (flag & MBIF) | |
256 | printk("MBIF "); | |
257 | if (flag & MBOA) | |
258 | printk("MBOF "); | |
259 | if (flag & HACC) | |
260 | printk("HACC "); | |
261 | if (flag & SCRD) | |
262 | printk("SCRD "); | |
c2532f68 | 263 | printk("status %02x\n", inb(STATUS(sh->io_port))); |
1da177e4 LT |
264 | }; |
265 | #endif | |
266 | number_serviced = 0; | |
1da177e4 | 267 | |
1b0224b0 OZ |
268 | spin_lock_irqsave(sh->host_lock, flags); |
269 | while (1) { | |
c2532f68 | 270 | flag = inb(INTRFLAGS(sh->io_port)); |
1da177e4 LT |
271 | |
272 | /* Check for unusual interrupts. If any of these happen, we should | |
273 | probably do something special, but for now just printing a message | |
274 | is sufficient. A SCSI reset detected is something that we really | |
275 | need to deal with in some way. */ | |
276 | if (flag & ~MBIF) { | |
277 | if (flag & MBOA) | |
278 | printk("MBOF "); | |
279 | if (flag & HACC) | |
280 | printk("HACC "); | |
dfd7c991 | 281 | if (flag & SCRD) |
1da177e4 | 282 | printk("SCRD "); |
1da177e4 | 283 | } |
c2532f68 | 284 | aha1542_intr_reset(sh->io_port); |
1da177e4 | 285 | |
e98878f7 | 286 | mbi = aha1542->aha1542_last_mbi_used + 1; |
1da177e4 LT |
287 | if (mbi >= 2 * AHA1542_MAILBOXES) |
288 | mbi = AHA1542_MAILBOXES; | |
289 | ||
290 | do { | |
291 | if (mb[mbi].status != 0) | |
292 | break; | |
293 | mbi++; | |
294 | if (mbi >= 2 * AHA1542_MAILBOXES) | |
295 | mbi = AHA1542_MAILBOXES; | |
e98878f7 | 296 | } while (mbi != aha1542->aha1542_last_mbi_used); |
1da177e4 LT |
297 | |
298 | if (mb[mbi].status == 0) { | |
1b0224b0 | 299 | spin_unlock_irqrestore(sh->host_lock, flags); |
1da177e4 | 300 | /* Hmm, no mail. Must have read it the last time around */ |
dfd7c991 | 301 | if (!number_serviced) |
2906b3ce | 302 | shost_printk(KERN_WARNING, sh, "interrupt received, but no mail.\n"); |
1b0224b0 | 303 | return IRQ_HANDLED; |
1da177e4 LT |
304 | }; |
305 | ||
10be6250 | 306 | mbo = (scsi2int(mb[mbi].ccbptr) - (isa_virt_to_bus(&ccb[0]))) / sizeof(struct ccb); |
1da177e4 LT |
307 | mbistatus = mb[mbi].status; |
308 | mb[mbi].status = 0; | |
e98878f7 | 309 | aha1542->aha1542_last_mbi_used = mbi; |
1da177e4 LT |
310 | |
311 | #ifdef DEBUG | |
fde1fb8a OZ |
312 | if (ccb[mbo].tarstat | ccb[mbo].hastat) |
313 | shost_printk(KERN_DEBUG, sh, "aha1542_command: returning %x (status %d)\n", | |
314 | ccb[mbo].tarstat + ((int) ccb[mbo].hastat << 16), mb[mbi].status); | |
1da177e4 LT |
315 | #endif |
316 | ||
317 | if (mbistatus == 3) | |
318 | continue; /* Aborted command not found */ | |
319 | ||
320 | #ifdef DEBUG | |
2906b3ce | 321 | shost_printk(KERN_DEBUG, sh, "...done %d %d\n", mbo, mbi); |
1da177e4 LT |
322 | #endif |
323 | ||
55b28f9f | 324 | tmp_cmd = aha1542->int_cmds[mbo]; |
1da177e4 | 325 | |
55b28f9f | 326 | if (!tmp_cmd || !tmp_cmd->scsi_done) { |
1b0224b0 | 327 | spin_unlock_irqrestore(sh->host_lock, flags); |
2906b3ce OZ |
328 | shost_printk(KERN_WARNING, sh, "Unexpected interrupt\n"); |
329 | shost_printk(KERN_WARNING, sh, "tarstat=%x, hastat=%x idlun=%x ccb#=%d\n", ccb[mbo].tarstat, | |
1da177e4 | 330 | ccb[mbo].hastat, ccb[mbo].idlun, mbo); |
1b0224b0 | 331 | return IRQ_HANDLED; |
1da177e4 | 332 | } |
55b28f9f OZ |
333 | my_done = tmp_cmd->scsi_done; |
334 | kfree(tmp_cmd->host_scribble); | |
335 | tmp_cmd->host_scribble = NULL; | |
1da177e4 LT |
336 | /* Fetch the sense data, and tuck it away, in the required slot. The |
337 | Adaptec automatically fetches it, and there is no guarantee that | |
338 | we will still have it in the cdb when we come back */ | |
339 | if (ccb[mbo].tarstat == 2) | |
55b28f9f | 340 | memcpy(tmp_cmd->sense_buffer, &ccb[mbo].cdb[ccb[mbo].cdblen], |
b80ca4f7 | 341 | SCSI_SENSE_BUFFERSIZE); |
1da177e4 LT |
342 | |
343 | ||
344 | /* is there mail :-) */ | |
345 | ||
346 | /* more error checking left out here */ | |
347 | if (mbistatus != 1) | |
348 | /* This is surely wrong, but I don't know what's right */ | |
349 | errstatus = makecode(ccb[mbo].hastat, ccb[mbo].tarstat); | |
350 | else | |
351 | errstatus = 0; | |
352 | ||
353 | #ifdef DEBUG | |
354 | if (errstatus) | |
2906b3ce | 355 | shost_printk(KERN_DEBUG, sh, "(aha1542 error:%x %x %x) ", errstatus, |
1da177e4 | 356 | ccb[mbo].hastat, ccb[mbo].tarstat); |
6ddc8cf4 OZ |
357 | if (ccb[mbo].tarstat == 2) |
358 | print_hex_dump_bytes("sense: ", DUMP_PREFIX_NONE, &ccb[mbo].cdb[ccb[mbo].cdblen], 12); | |
fde1fb8a OZ |
359 | if (errstatus) |
360 | printk("aha1542_intr_handle: returning %6x\n", errstatus); | |
361 | #endif | |
55b28f9f OZ |
362 | tmp_cmd->result = errstatus; |
363 | aha1542->int_cmds[mbo] = NULL; /* This effectively frees up the mailbox slot, as | |
e98878f7 | 364 | far as queuecommand is concerned */ |
55b28f9f | 365 | my_done(tmp_cmd); |
1da177e4 LT |
366 | number_serviced++; |
367 | }; | |
368 | } | |
369 | ||
1b0224b0 | 370 | static int aha1542_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *cmd) |
09a44833 | 371 | { |
2906b3ce | 372 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
cb5b570c | 373 | u8 direction; |
55b28f9f OZ |
374 | u8 target = cmd->device->id; |
375 | u8 lun = cmd->device->lun; | |
1da177e4 | 376 | unsigned long flags; |
55b28f9f | 377 | int bufflen = scsi_bufflen(cmd); |
8c08a621 | 378 | int mbo, sg_count; |
e98878f7 OZ |
379 | struct mailbox *mb = aha1542->mb; |
380 | struct ccb *ccb = aha1542->ccb; | |
8c08a621 | 381 | struct chain *cptr; |
1da177e4 | 382 | |
55b28f9f | 383 | if (*cmd->cmnd == REQUEST_SENSE) { |
1da177e4 | 384 | /* Don't do the command - we have the sense data already */ |
55b28f9f | 385 | cmd->result = 0; |
1b0224b0 | 386 | cmd->scsi_done(cmd); |
1da177e4 LT |
387 | return 0; |
388 | } | |
389 | #ifdef DEBUG | |
764a0c7e OZ |
390 | { |
391 | int i = -1; | |
392 | if (*cmd->cmnd == READ_10 || *cmd->cmnd == WRITE_10) | |
393 | i = xscsi2int(cmd->cmnd + 2); | |
394 | else if (*cmd->cmnd == READ_6 || *cmd->cmnd == WRITE_6) | |
395 | i = scsi2int(cmd->cmnd + 2); | |
396 | shost_printk(KERN_DEBUG, sh, "aha1542_queuecommand: dev %d cmd %02x pos %d len %d", | |
397 | target, *cmd->cmnd, i, bufflen); | |
398 | print_hex_dump_bytes("command: ", DUMP_PREFIX_NONE, cmd->cmnd, cmd->cmd_len); | |
399 | } | |
1da177e4 | 400 | #endif |
8c08a621 OZ |
401 | if (bufflen) { /* allocate memory before taking host_lock */ |
402 | sg_count = scsi_sg_count(cmd); | |
403 | cptr = kmalloc(sizeof(*cptr) * sg_count, GFP_KERNEL | GFP_DMA); | |
404 | if (!cptr) | |
405 | return SCSI_MLQUEUE_HOST_BUSY; | |
ec54adfb AB |
406 | } else { |
407 | sg_count = 0; | |
408 | cptr = NULL; | |
8c08a621 OZ |
409 | } |
410 | ||
1da177e4 LT |
411 | /* Use the outgoing mailboxes in a round-robin fashion, because this |
412 | is how the host adapter will scan for them */ | |
413 | ||
1b0224b0 | 414 | spin_lock_irqsave(sh->host_lock, flags); |
e98878f7 | 415 | mbo = aha1542->aha1542_last_mbo_used + 1; |
1da177e4 LT |
416 | if (mbo >= AHA1542_MAILBOXES) |
417 | mbo = 0; | |
418 | ||
419 | do { | |
55b28f9f | 420 | if (mb[mbo].status == 0 && aha1542->int_cmds[mbo] == NULL) |
1da177e4 LT |
421 | break; |
422 | mbo++; | |
423 | if (mbo >= AHA1542_MAILBOXES) | |
424 | mbo = 0; | |
e98878f7 | 425 | } while (mbo != aha1542->aha1542_last_mbo_used); |
1da177e4 | 426 | |
55b28f9f | 427 | if (mb[mbo].status || aha1542->int_cmds[mbo]) |
1da177e4 LT |
428 | panic("Unable to find empty mailbox for aha1542.\n"); |
429 | ||
55b28f9f | 430 | aha1542->int_cmds[mbo] = cmd; /* This will effectively prevent someone else from |
e98878f7 | 431 | screwing with this cdb. */ |
1da177e4 | 432 | |
e98878f7 | 433 | aha1542->aha1542_last_mbo_used = mbo; |
1da177e4 LT |
434 | |
435 | #ifdef DEBUG | |
1b0224b0 | 436 | shost_printk(KERN_DEBUG, sh, "Sending command (%d %p)...", mbo, cmd->scsi_done); |
1da177e4 LT |
437 | #endif |
438 | ||
10be6250 | 439 | any2scsi(mb[mbo].ccbptr, isa_virt_to_bus(&ccb[mbo])); /* This gets trashed for some reason */ |
1da177e4 LT |
440 | |
441 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
442 | ||
55b28f9f | 443 | ccb[mbo].cdblen = cmd->cmd_len; |
1da177e4 LT |
444 | |
445 | direction = 0; | |
55b28f9f | 446 | if (*cmd->cmnd == READ_10 || *cmd->cmnd == READ_6) |
1da177e4 | 447 | direction = 8; |
55b28f9f | 448 | else if (*cmd->cmnd == WRITE_10 || *cmd->cmnd == WRITE_6) |
1da177e4 LT |
449 | direction = 16; |
450 | ||
55b28f9f | 451 | memcpy(ccb[mbo].cdb, cmd->cmnd, ccb[mbo].cdblen); |
1da177e4 | 452 | |
fc3fdfcc | 453 | if (bufflen) { |
51cf2249 | 454 | struct scatterlist *sg; |
8c08a621 | 455 | int i; |
6ddc8cf4 | 456 | |
1da177e4 | 457 | ccb[mbo].op = 2; /* SCSI Initiator Command w/scatter-gather */ |
8c08a621 | 458 | cmd->host_scribble = (void *)cptr; |
55b28f9f | 459 | scsi_for_each_sg(cmd, sg, sg_count, i) { |
10be6250 OZ |
460 | any2scsi(cptr[i].dataptr, isa_page_to_bus(sg_page(sg)) |
461 | + sg->offset); | |
51cf2249 | 462 | any2scsi(cptr[i].datalen, sg->length); |
1da177e4 | 463 | }; |
fc3fdfcc | 464 | any2scsi(ccb[mbo].datalen, sg_count * sizeof(struct chain)); |
10be6250 | 465 | any2scsi(ccb[mbo].dataptr, isa_virt_to_bus(cptr)); |
1da177e4 | 466 | #ifdef DEBUG |
6ddc8cf4 OZ |
467 | shost_printk(KERN_DEBUG, sh, "cptr %p: ", cptr); |
468 | print_hex_dump_bytes("cptr: ", DUMP_PREFIX_NONE, cptr, 18); | |
1da177e4 LT |
469 | #endif |
470 | } else { | |
471 | ccb[mbo].op = 0; /* SCSI Initiator Command */ | |
55b28f9f | 472 | cmd->host_scribble = NULL; |
fc3fdfcc BH |
473 | any2scsi(ccb[mbo].datalen, 0); |
474 | any2scsi(ccb[mbo].dataptr, 0); | |
1da177e4 LT |
475 | }; |
476 | ccb[mbo].idlun = (target & 7) << 5 | direction | (lun & 7); /*SCSI Target Id */ | |
477 | ccb[mbo].rsalen = 16; | |
478 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
479 | ccb[mbo].commlinkid = 0; | |
480 | ||
481 | #ifdef DEBUG | |
6ddc8cf4 | 482 | print_hex_dump_bytes("sending: ", DUMP_PREFIX_NONE, &ccb[mbo], sizeof(ccb[mbo]) - 10); |
1b0224b0 | 483 | printk("aha1542_queuecommand: now waiting for interrupt "); |
1da177e4 | 484 | #endif |
1b0224b0 OZ |
485 | mb[mbo].status = 1; |
486 | aha1542_outb(cmd->device->host->io_port, CMD_START_SCSI); | |
487 | spin_unlock_irqrestore(sh->host_lock, flags); | |
1da177e4 LT |
488 | |
489 | return 0; | |
490 | } | |
491 | ||
492 | /* Initialize mailboxes */ | |
68ea9de3 | 493 | static void setup_mailboxes(struct Scsi_Host *sh) |
1da177e4 | 494 | { |
c2532f68 | 495 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
1da177e4 | 496 | int i; |
e98878f7 OZ |
497 | struct mailbox *mb = aha1542->mb; |
498 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 | 499 | |
cad2fc72 | 500 | u8 mb_cmd[5] = { CMD_MBINIT, AHA1542_MAILBOXES, 0, 0, 0}; |
1da177e4 | 501 | |
1da177e4 LT |
502 | for (i = 0; i < AHA1542_MAILBOXES; i++) { |
503 | mb[i].status = mb[AHA1542_MAILBOXES + i].status = 0; | |
10be6250 | 504 | any2scsi(mb[i].ccbptr, isa_virt_to_bus(&ccb[i])); |
1da177e4 | 505 | }; |
68ea9de3 | 506 | aha1542_intr_reset(sh->io_port); /* reset interrupts, so they don't block */ |
cad2fc72 | 507 | any2scsi((mb_cmd + 2), isa_virt_to_bus(mb)); |
68ea9de3 | 508 | if (aha1542_out(sh->io_port, mb_cmd, 5)) |
2906b3ce | 509 | shost_printk(KERN_ERR, sh, "failed setting up mailboxes\n"); |
68ea9de3 | 510 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
511 | } |
512 | ||
68ea9de3 | 513 | static int aha1542_getconfig(struct Scsi_Host *sh) |
1da177e4 | 514 | { |
cb5b570c | 515 | u8 inquiry_result[3]; |
1da177e4 | 516 | int i; |
68ea9de3 | 517 | i = inb(STATUS(sh->io_port)); |
1da177e4 | 518 | if (i & DF) { |
68ea9de3 | 519 | i = inb(DATA(sh->io_port)); |
1da177e4 | 520 | }; |
68ea9de3 OZ |
521 | aha1542_outb(sh->io_port, CMD_RETCONF); |
522 | aha1542_in(sh->io_port, inquiry_result, 3, 0); | |
523 | if (!wait_mask(INTRFLAGS(sh->io_port), INTRMASK, HACC, 0, 0)) | |
2906b3ce | 524 | shost_printk(KERN_ERR, sh, "error querying board settings\n"); |
68ea9de3 | 525 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
526 | switch (inquiry_result[0]) { |
527 | case 0x80: | |
68ea9de3 | 528 | sh->dma_channel = 7; |
1da177e4 LT |
529 | break; |
530 | case 0x40: | |
68ea9de3 | 531 | sh->dma_channel = 6; |
1da177e4 LT |
532 | break; |
533 | case 0x20: | |
68ea9de3 | 534 | sh->dma_channel = 5; |
1da177e4 LT |
535 | break; |
536 | case 0x01: | |
68ea9de3 | 537 | sh->dma_channel = 0; |
1da177e4 LT |
538 | break; |
539 | case 0: | |
540 | /* This means that the adapter, although Adaptec 1542 compatible, doesn't use a DMA channel. | |
541 | Currently only aware of the BusLogic BT-445S VL-Bus adapter which needs this. */ | |
68ea9de3 | 542 | sh->dma_channel = 0xFF; |
1da177e4 LT |
543 | break; |
544 | default: | |
2906b3ce | 545 | shost_printk(KERN_ERR, sh, "Unable to determine DMA channel.\n"); |
1da177e4 LT |
546 | return -1; |
547 | }; | |
548 | switch (inquiry_result[1]) { | |
549 | case 0x40: | |
68ea9de3 | 550 | sh->irq = 15; |
1da177e4 LT |
551 | break; |
552 | case 0x20: | |
68ea9de3 | 553 | sh->irq = 14; |
1da177e4 LT |
554 | break; |
555 | case 0x8: | |
68ea9de3 | 556 | sh->irq = 12; |
1da177e4 LT |
557 | break; |
558 | case 0x4: | |
68ea9de3 | 559 | sh->irq = 11; |
1da177e4 LT |
560 | break; |
561 | case 0x2: | |
68ea9de3 | 562 | sh->irq = 10; |
1da177e4 LT |
563 | break; |
564 | case 0x1: | |
68ea9de3 | 565 | sh->irq = 9; |
1da177e4 LT |
566 | break; |
567 | default: | |
2906b3ce | 568 | shost_printk(KERN_ERR, sh, "Unable to determine IRQ level.\n"); |
1da177e4 LT |
569 | return -1; |
570 | }; | |
68ea9de3 | 571 | sh->this_id = inquiry_result[2] & 7; |
1da177e4 LT |
572 | return 0; |
573 | } | |
574 | ||
575 | /* This function should only be called for 1542C boards - we can detect | |
576 | the special firmware settings and unlock the board */ | |
577 | ||
68ea9de3 | 578 | static int aha1542_mbenable(struct Scsi_Host *sh) |
1da177e4 | 579 | { |
cb5b570c OZ |
580 | static u8 mbenable_cmd[3]; |
581 | static u8 mbenable_result[2]; | |
1da177e4 LT |
582 | int retval; |
583 | ||
584 | retval = BIOS_TRANSLATION_6432; | |
585 | ||
68ea9de3 OZ |
586 | aha1542_outb(sh->io_port, CMD_EXTBIOS); |
587 | if (aha1542_in(sh->io_port, mbenable_result, 2, 100)) | |
1da177e4 | 588 | return retval; |
68ea9de3 | 589 | if (!wait_mask(INTRFLAGS(sh->io_port), INTRMASK, HACC, 0, 100)) |
2093bfa1 | 590 | goto fail; |
68ea9de3 | 591 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
592 | |
593 | if ((mbenable_result[0] & 0x08) || mbenable_result[1]) { | |
594 | mbenable_cmd[0] = CMD_MBENABLE; | |
595 | mbenable_cmd[1] = 0; | |
596 | mbenable_cmd[2] = mbenable_result[1]; | |
597 | ||
598 | if ((mbenable_result[0] & 0x08) && (mbenable_result[1] & 0x03)) | |
599 | retval = BIOS_TRANSLATION_25563; | |
600 | ||
68ea9de3 | 601 | if (aha1542_out(sh->io_port, mbenable_cmd, 3)) |
2093bfa1 | 602 | goto fail; |
1da177e4 LT |
603 | }; |
604 | while (0) { | |
605 | fail: | |
2906b3ce | 606 | shost_printk(KERN_ERR, sh, "Mailbox init failed\n"); |
1da177e4 | 607 | } |
68ea9de3 | 608 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
609 | return retval; |
610 | } | |
611 | ||
612 | /* Query the board to find out if it is a 1542 or a 1740, or whatever. */ | |
68ea9de3 | 613 | static int aha1542_query(struct Scsi_Host *sh) |
1da177e4 | 614 | { |
68ea9de3 | 615 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
cb5b570c | 616 | u8 inquiry_result[4]; |
1da177e4 | 617 | int i; |
68ea9de3 | 618 | i = inb(STATUS(sh->io_port)); |
1da177e4 | 619 | if (i & DF) { |
68ea9de3 | 620 | i = inb(DATA(sh->io_port)); |
1da177e4 | 621 | }; |
68ea9de3 OZ |
622 | aha1542_outb(sh->io_port, CMD_INQUIRY); |
623 | aha1542_in(sh->io_port, inquiry_result, 4, 0); | |
624 | if (!wait_mask(INTRFLAGS(sh->io_port), INTRMASK, HACC, 0, 0)) | |
2906b3ce | 625 | shost_printk(KERN_ERR, sh, "error querying card type\n"); |
68ea9de3 | 626 | aha1542_intr_reset(sh->io_port); |
1da177e4 | 627 | |
68ea9de3 | 628 | aha1542->bios_translation = BIOS_TRANSLATION_6432; /* Default case */ |
1da177e4 LT |
629 | |
630 | /* For an AHA1740 series board, we ignore the board since there is a | |
631 | hardware bug which can lead to wrong blocks being returned if the board | |
632 | is operating in the 1542 emulation mode. Since there is an extended mode | |
633 | driver, we simply ignore the board and let the 1740 driver pick it up. | |
634 | */ | |
635 | ||
636 | if (inquiry_result[0] == 0x43) { | |
2906b3ce | 637 | shost_printk(KERN_INFO, sh, "Emulation mode not supported for AHA-1740 hardware, use aha1740 driver instead.\n"); |
1da177e4 LT |
638 | return 1; |
639 | }; | |
640 | ||
641 | /* Always call this - boards that do not support extended bios translation | |
642 | will ignore the command, and we will set the proper default */ | |
643 | ||
68ea9de3 | 644 | aha1542->bios_translation = aha1542_mbenable(sh); |
1da177e4 LT |
645 | |
646 | return 0; | |
647 | } | |
648 | ||
f71429ab | 649 | static u8 dma_speed_hw(int dma_speed) |
1da177e4 | 650 | { |
f71429ab OZ |
651 | switch (dma_speed) { |
652 | case 5: | |
653 | return 0x00; | |
654 | case 6: | |
655 | return 0x04; | |
656 | case 7: | |
657 | return 0x01; | |
658 | case 8: | |
659 | return 0x02; | |
660 | case 10: | |
661 | return 0x03; | |
1da177e4 | 662 | } |
1da177e4 | 663 | |
f71429ab | 664 | return 0xff; /* invalid */ |
1da177e4 LT |
665 | } |
666 | ||
f71429ab | 667 | /* Set the Bus on/off-times as not to ruin floppy performance */ |
37d607bd | 668 | static void aha1542_set_bus_times(struct Scsi_Host *sh, int bus_on, int bus_off, int dma_speed) |
1da177e4 | 669 | { |
37d607bd OZ |
670 | if (bus_on > 0) { |
671 | u8 oncmd[] = { CMD_BUSON_TIME, clamp(bus_on, 2, 15) }; | |
1da177e4 | 672 | |
37d607bd OZ |
673 | aha1542_intr_reset(sh->io_port); |
674 | if (aha1542_out(sh->io_port, oncmd, 2)) | |
f71429ab OZ |
675 | goto fail; |
676 | } | |
1da177e4 | 677 | |
37d607bd OZ |
678 | if (bus_off > 0) { |
679 | u8 offcmd[] = { CMD_BUSOFF_TIME, clamp(bus_off, 1, 64) }; | |
1da177e4 | 680 | |
37d607bd OZ |
681 | aha1542_intr_reset(sh->io_port); |
682 | if (aha1542_out(sh->io_port, offcmd, 2)) | |
f71429ab OZ |
683 | goto fail; |
684 | } | |
1da177e4 | 685 | |
37d607bd OZ |
686 | if (dma_speed_hw(dma_speed) != 0xff) { |
687 | u8 dmacmd[] = { CMD_DMASPEED, dma_speed_hw(dma_speed) }; | |
b847fd0d | 688 | |
37d607bd OZ |
689 | aha1542_intr_reset(sh->io_port); |
690 | if (aha1542_out(sh->io_port, dmacmd, 2)) | |
b847fd0d OZ |
691 | goto fail; |
692 | } | |
37d607bd | 693 | aha1542_intr_reset(sh->io_port); |
b847fd0d OZ |
694 | return; |
695 | fail: | |
2906b3ce | 696 | shost_printk(KERN_ERR, sh, "setting bus on/off-time failed\n"); |
37d607bd | 697 | aha1542_intr_reset(sh->io_port); |
b847fd0d OZ |
698 | } |
699 | ||
1da177e4 | 700 | /* return non-zero on detection */ |
643a7c43 | 701 | static struct Scsi_Host *aha1542_hw_init(struct scsi_host_template *tpnt, struct device *pdev, int indx) |
1da177e4 | 702 | { |
f71429ab | 703 | unsigned int base_io = io[indx]; |
c2532f68 | 704 | struct Scsi_Host *sh; |
e98878f7 | 705 | struct aha1542_hostdata *aha1542; |
2906b3ce | 706 | char dma_info[] = "no DMA"; |
1da177e4 | 707 | |
3a70c006 OZ |
708 | if (base_io == 0) |
709 | return NULL; | |
1da177e4 | 710 | |
3a70c006 OZ |
711 | if (!request_region(base_io, AHA1542_REGION_SIZE, "aha1542")) |
712 | return NULL; | |
1da177e4 | 713 | |
c2532f68 OZ |
714 | sh = scsi_host_alloc(tpnt, sizeof(struct aha1542_hostdata)); |
715 | if (!sh) | |
3a70c006 | 716 | goto release; |
c2532f68 | 717 | aha1542 = shost_priv(sh); |
b847fd0d | 718 | |
68ea9de3 OZ |
719 | sh->unique_id = base_io; |
720 | sh->io_port = base_io; | |
721 | sh->n_io_port = AHA1542_REGION_SIZE; | |
722 | aha1542->aha1542_last_mbi_used = 2 * AHA1542_MAILBOXES - 1; | |
723 | aha1542->aha1542_last_mbo_used = AHA1542_MAILBOXES - 1; | |
724 | ||
725 | if (!aha1542_test_port(sh)) | |
3a70c006 | 726 | goto unregister; |
1da177e4 | 727 | |
37d607bd | 728 | aha1542_set_bus_times(sh, bus_on[indx], bus_off[indx], dma_speed[indx]); |
68ea9de3 | 729 | if (aha1542_query(sh)) |
3a70c006 | 730 | goto unregister; |
68ea9de3 | 731 | if (aha1542_getconfig(sh) == -1) |
3a70c006 | 732 | goto unregister; |
1da177e4 | 733 | |
c2532f68 | 734 | if (sh->dma_channel != 0xFF) |
2906b3ce OZ |
735 | snprintf(dma_info, sizeof(dma_info), "DMA %d", sh->dma_channel); |
736 | shost_printk(KERN_INFO, sh, "Adaptec AHA-1542 (SCSI-ID %d) at IO 0x%x, IRQ %d, %s\n", | |
737 | sh->this_id, base_io, sh->irq, dma_info); | |
3a70c006 | 738 | if (aha1542->bios_translation == BIOS_TRANSLATION_25563) |
2906b3ce | 739 | shost_printk(KERN_INFO, sh, "Using extended bios translation\n"); |
1da177e4 | 740 | |
68ea9de3 | 741 | setup_mailboxes(sh); |
1da177e4 | 742 | |
1b0224b0 | 743 | if (request_irq(sh->irq, aha1542_interrupt, 0, "aha1542", sh)) { |
2906b3ce | 744 | shost_printk(KERN_ERR, sh, "Unable to allocate IRQ.\n"); |
3a70c006 OZ |
745 | goto unregister; |
746 | } | |
c2532f68 OZ |
747 | if (sh->dma_channel != 0xFF) { |
748 | if (request_dma(sh->dma_channel, "aha1542")) { | |
2906b3ce | 749 | shost_printk(KERN_ERR, sh, "Unable to allocate DMA channel.\n"); |
3a70c006 OZ |
750 | goto free_irq; |
751 | } | |
c2532f68 OZ |
752 | if (sh->dma_channel == 0 || sh->dma_channel >= 5) { |
753 | set_dma_mode(sh->dma_channel, DMA_MODE_CASCADE); | |
754 | enable_dma(sh->dma_channel); | |
3a70c006 OZ |
755 | } |
756 | } | |
1da177e4 | 757 | |
c2532f68 | 758 | if (scsi_add_host(sh, pdev)) |
3a70c006 | 759 | goto free_dma; |
1da177e4 | 760 | |
c2532f68 | 761 | scsi_scan_host(sh); |
1da177e4 | 762 | |
c2532f68 | 763 | return sh; |
3a70c006 | 764 | free_dma: |
c2532f68 OZ |
765 | if (sh->dma_channel != 0xff) |
766 | free_dma(sh->dma_channel); | |
3a70c006 | 767 | free_irq: |
c2532f68 | 768 | free_irq(sh->irq, sh); |
3a70c006 | 769 | unregister: |
c2532f68 | 770 | scsi_host_put(sh); |
3a70c006 OZ |
771 | release: |
772 | release_region(base_io, AHA1542_REGION_SIZE); | |
1da177e4 | 773 | |
643a7c43 | 774 | return NULL; |
1da177e4 LT |
775 | } |
776 | ||
c2532f68 | 777 | static int aha1542_release(struct Scsi_Host *sh) |
1da177e4 | 778 | { |
c2532f68 OZ |
779 | scsi_remove_host(sh); |
780 | if (sh->dma_channel != 0xff) | |
781 | free_dma(sh->dma_channel); | |
782 | if (sh->irq) | |
783 | free_irq(sh->irq, sh); | |
784 | if (sh->io_port && sh->n_io_port) | |
785 | release_region(sh->io_port, sh->n_io_port); | |
786 | scsi_host_put(sh); | |
1da177e4 LT |
787 | return 0; |
788 | } | |
789 | ||
1da177e4 | 790 | |
1da177e4 LT |
791 | /* |
792 | * This is a device reset. This is handled by sending a special command | |
793 | * to the device. | |
794 | */ | |
55b28f9f | 795 | static int aha1542_dev_reset(struct scsi_cmnd *cmd) |
1da177e4 | 796 | { |
1b0224b0 OZ |
797 | struct Scsi_Host *sh = cmd->device->host; |
798 | struct aha1542_hostdata *aha1542 = shost_priv(sh); | |
1da177e4 | 799 | unsigned long flags; |
e98878f7 | 800 | struct mailbox *mb = aha1542->mb; |
55b28f9f OZ |
801 | u8 target = cmd->device->id; |
802 | u8 lun = cmd->device->lun; | |
1da177e4 | 803 | int mbo; |
e98878f7 | 804 | struct ccb *ccb = aha1542->ccb; |
1da177e4 | 805 | |
1b0224b0 | 806 | spin_lock_irqsave(sh->host_lock, flags); |
e98878f7 | 807 | mbo = aha1542->aha1542_last_mbo_used + 1; |
1da177e4 LT |
808 | if (mbo >= AHA1542_MAILBOXES) |
809 | mbo = 0; | |
810 | ||
811 | do { | |
55b28f9f | 812 | if (mb[mbo].status == 0 && aha1542->int_cmds[mbo] == NULL) |
1da177e4 LT |
813 | break; |
814 | mbo++; | |
815 | if (mbo >= AHA1542_MAILBOXES) | |
816 | mbo = 0; | |
e98878f7 | 817 | } while (mbo != aha1542->aha1542_last_mbo_used); |
1da177e4 | 818 | |
55b28f9f | 819 | if (mb[mbo].status || aha1542->int_cmds[mbo]) |
1da177e4 LT |
820 | panic("Unable to find empty mailbox for aha1542.\n"); |
821 | ||
55b28f9f | 822 | aha1542->int_cmds[mbo] = cmd; /* This will effectively |
e98878f7 OZ |
823 | prevent someone else from |
824 | screwing with this cdb. */ | |
1da177e4 | 825 | |
e98878f7 | 826 | aha1542->aha1542_last_mbo_used = mbo; |
1da177e4 | 827 | |
10be6250 | 828 | any2scsi(mb[mbo].ccbptr, isa_virt_to_bus(&ccb[mbo])); /* This gets trashed for some reason */ |
1da177e4 LT |
829 | |
830 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
831 | ||
832 | ccb[mbo].op = 0x81; /* BUS DEVICE RESET */ | |
833 | ||
834 | ccb[mbo].idlun = (target & 7) << 5 | (lun & 7); /*SCSI Target Id */ | |
835 | ||
836 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
837 | ccb[mbo].commlinkid = 0; | |
838 | ||
839 | /* | |
840 | * Now tell the 1542 to flush all pending commands for this | |
841 | * target | |
842 | */ | |
1b0224b0 OZ |
843 | aha1542_outb(sh->io_port, CMD_START_SCSI); |
844 | spin_unlock_irqrestore(sh->host_lock, flags); | |
1da177e4 | 845 | |
55b28f9f | 846 | scmd_printk(KERN_WARNING, cmd, |
017560fc | 847 | "Trying device reset for target\n"); |
1da177e4 LT |
848 | |
849 | return SUCCESS; | |
1da177e4 LT |
850 | } |
851 | ||
55b28f9f | 852 | static int aha1542_reset(struct scsi_cmnd *cmd, u8 reset_cmd) |
1da177e4 | 853 | { |
1b0224b0 OZ |
854 | struct Scsi_Host *sh = cmd->device->host; |
855 | struct aha1542_hostdata *aha1542 = shost_priv(sh); | |
856 | unsigned long flags; | |
1da177e4 LT |
857 | int i; |
858 | ||
1b0224b0 | 859 | spin_lock_irqsave(sh->host_lock, flags); |
1da177e4 LT |
860 | /* |
861 | * This does a scsi reset for all devices on the bus. | |
862 | * In principle, we could also reset the 1542 - should | |
863 | * we do this? Try this first, and we can add that later | |
864 | * if it turns out to be useful. | |
865 | */ | |
55b28f9f | 866 | outb(reset_cmd, CONTROL(cmd->device->host->io_port)); |
1da177e4 | 867 | |
55b28f9f | 868 | if (!wait_mask(STATUS(cmd->device->host->io_port), |
7061dec4 | 869 | STATMASK, IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0)) { |
1b0224b0 | 870 | spin_unlock_irqrestore(sh->host_lock, flags); |
a13b3722 OZ |
871 | return FAILED; |
872 | } | |
1b0224b0 | 873 | |
8537cba8 OZ |
874 | /* |
875 | * We need to do this too before the 1542 can interact with | |
876 | * us again after host reset. | |
877 | */ | |
878 | if (reset_cmd & HRST) | |
68ea9de3 | 879 | setup_mailboxes(cmd->device->host); |
1b0224b0 | 880 | |
1da177e4 LT |
881 | /* |
882 | * Now try to pick up the pieces. For all pending commands, | |
883 | * free any internal data structures, and basically clear things | |
884 | * out. We do not try and restart any commands or anything - | |
885 | * the strategy handler takes care of that crap. | |
886 | */ | |
2906b3ce | 887 | shost_printk(KERN_WARNING, cmd->device->host, "Sent BUS RESET to scsi host %d\n", cmd->device->host->host_no); |
1da177e4 LT |
888 | |
889 | for (i = 0; i < AHA1542_MAILBOXES; i++) { | |
55b28f9f OZ |
890 | if (aha1542->int_cmds[i] != NULL) { |
891 | struct scsi_cmnd *tmp_cmd; | |
892 | tmp_cmd = aha1542->int_cmds[i]; | |
1da177e4 | 893 | |
55b28f9f | 894 | if (tmp_cmd->device->soft_reset) { |
1da177e4 LT |
895 | /* |
896 | * If this device implements the soft reset option, | |
897 | * then it is still holding onto the command, and | |
898 | * may yet complete it. In this case, we don't | |
899 | * flush the data. | |
900 | */ | |
901 | continue; | |
902 | } | |
55b28f9f OZ |
903 | kfree(tmp_cmd->host_scribble); |
904 | tmp_cmd->host_scribble = NULL; | |
905 | aha1542->int_cmds[i] = NULL; | |
e98878f7 | 906 | aha1542->mb[i].status = 0; |
1da177e4 LT |
907 | } |
908 | } | |
909 | ||
1b0224b0 | 910 | spin_unlock_irqrestore(sh->host_lock, flags); |
1da177e4 | 911 | return SUCCESS; |
1da177e4 LT |
912 | } |
913 | ||
55b28f9f | 914 | static int aha1542_bus_reset(struct scsi_cmnd *cmd) |
1da177e4 | 915 | { |
55b28f9f | 916 | return aha1542_reset(cmd, SCRST); |
8537cba8 | 917 | } |
1da177e4 | 918 | |
55b28f9f | 919 | static int aha1542_host_reset(struct scsi_cmnd *cmd) |
8537cba8 | 920 | { |
55b28f9f | 921 | return aha1542_reset(cmd, HRST | SCRST); |
1da177e4 LT |
922 | } |
923 | ||
1da177e4 | 924 | static int aha1542_biosparam(struct scsi_device *sdev, |
17787a09 | 925 | struct block_device *bdev, sector_t capacity, int geom[]) |
1da177e4 | 926 | { |
e98878f7 | 927 | struct aha1542_hostdata *aha1542 = shost_priv(sdev->host); |
1da177e4 | 928 | |
17787a09 OZ |
929 | if (capacity >= 0x200000 && |
930 | aha1542->bios_translation == BIOS_TRANSLATION_25563) { | |
1da177e4 | 931 | /* Please verify that this is the same as what DOS returns */ |
17787a09 OZ |
932 | geom[0] = 255; /* heads */ |
933 | geom[1] = 63; /* sectors */ | |
1da177e4 | 934 | } else { |
17787a09 OZ |
935 | geom[0] = 64; /* heads */ |
936 | geom[1] = 32; /* sectors */ | |
1da177e4 | 937 | } |
17787a09 | 938 | geom[2] = sector_div(capacity, geom[0] * geom[1]); /* cylinders */ |
1da177e4 LT |
939 | |
940 | return 0; | |
941 | } | |
942 | MODULE_LICENSE("GPL"); | |
943 | ||
d0be4a7d | 944 | static struct scsi_host_template driver_template = { |
643a7c43 | 945 | .module = THIS_MODULE, |
1da177e4 LT |
946 | .proc_name = "aha1542", |
947 | .name = "Adaptec 1542", | |
1da177e4 | 948 | .queuecommand = aha1542_queuecommand, |
1da177e4 LT |
949 | .eh_device_reset_handler= aha1542_dev_reset, |
950 | .eh_bus_reset_handler = aha1542_bus_reset, | |
951 | .eh_host_reset_handler = aha1542_host_reset, | |
952 | .bios_param = aha1542_biosparam, | |
953 | .can_queue = AHA1542_MAILBOXES, | |
954 | .this_id = 7, | |
10be6250 | 955 | .sg_tablesize = 16, |
1da177e4 LT |
956 | .unchecked_isa_dma = 1, |
957 | .use_clustering = ENABLE_CLUSTERING, | |
958 | }; | |
643a7c43 OZ |
959 | |
960 | static int aha1542_isa_match(struct device *pdev, unsigned int ndev) | |
961 | { | |
962 | struct Scsi_Host *sh = aha1542_hw_init(&driver_template, pdev, ndev); | |
963 | ||
964 | if (!sh) | |
965 | return 0; | |
966 | ||
967 | dev_set_drvdata(pdev, sh); | |
968 | return 1; | |
969 | } | |
970 | ||
971 | static int aha1542_isa_remove(struct device *pdev, | |
972 | unsigned int ndev) | |
973 | { | |
974 | aha1542_release(dev_get_drvdata(pdev)); | |
975 | dev_set_drvdata(pdev, NULL); | |
976 | return 0; | |
977 | } | |
978 | ||
979 | static struct isa_driver aha1542_isa_driver = { | |
980 | .match = aha1542_isa_match, | |
981 | .remove = aha1542_isa_remove, | |
982 | .driver = { | |
983 | .name = "aha1542" | |
984 | }, | |
985 | }; | |
986 | static int isa_registered; | |
987 | ||
988 | #ifdef CONFIG_PNP | |
989 | static struct pnp_device_id aha1542_pnp_ids[] = { | |
990 | { .id = "ADP1542" }, | |
991 | { .id = "" } | |
992 | }; | |
993 | MODULE_DEVICE_TABLE(pnp, aha1542_pnp_ids); | |
994 | ||
995 | static int aha1542_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *id) | |
996 | { | |
997 | int indx; | |
998 | struct Scsi_Host *sh; | |
999 | ||
f71429ab OZ |
1000 | for (indx = 0; indx < ARRAY_SIZE(io); indx++) { |
1001 | if (io[indx]) | |
643a7c43 OZ |
1002 | continue; |
1003 | ||
1004 | if (pnp_activate_dev(pdev) < 0) | |
1005 | continue; | |
1006 | ||
f71429ab | 1007 | io[indx] = pnp_port_start(pdev, 0); |
643a7c43 OZ |
1008 | |
1009 | /* The card can be queried for its DMA, we have | |
1010 | the DMA set up that is enough */ | |
1011 | ||
2906b3ce | 1012 | dev_info(&pdev->dev, "ISAPnP found an AHA1535 at I/O 0x%03X", io[indx]); |
643a7c43 OZ |
1013 | } |
1014 | ||
1015 | sh = aha1542_hw_init(&driver_template, &pdev->dev, indx); | |
1016 | if (!sh) | |
1017 | return -ENODEV; | |
1018 | ||
1019 | pnp_set_drvdata(pdev, sh); | |
1020 | return 0; | |
1021 | } | |
1022 | ||
1023 | static void aha1542_pnp_remove(struct pnp_dev *pdev) | |
1024 | { | |
1025 | aha1542_release(pnp_get_drvdata(pdev)); | |
1026 | pnp_set_drvdata(pdev, NULL); | |
1027 | } | |
1028 | ||
1029 | static struct pnp_driver aha1542_pnp_driver = { | |
1030 | .name = "aha1542", | |
1031 | .id_table = aha1542_pnp_ids, | |
1032 | .probe = aha1542_pnp_probe, | |
1033 | .remove = aha1542_pnp_remove, | |
1034 | }; | |
1035 | static int pnp_registered; | |
1036 | #endif /* CONFIG_PNP */ | |
1037 | ||
1038 | static int __init aha1542_init(void) | |
1039 | { | |
1040 | int ret = 0; | |
643a7c43 OZ |
1041 | |
1042 | #ifdef CONFIG_PNP | |
1043 | if (isapnp) { | |
1044 | ret = pnp_register_driver(&aha1542_pnp_driver); | |
1045 | if (!ret) | |
1046 | pnp_registered = 1; | |
1047 | } | |
1048 | #endif | |
1049 | ret = isa_register_driver(&aha1542_isa_driver, MAXBOARDS); | |
1050 | if (!ret) | |
1051 | isa_registered = 1; | |
1052 | ||
1053 | #ifdef CONFIG_PNP | |
1054 | if (pnp_registered) | |
1055 | ret = 0; | |
1056 | #endif | |
1057 | if (isa_registered) | |
1058 | ret = 0; | |
1059 | ||
1060 | return ret; | |
1061 | } | |
1062 | ||
1063 | static void __exit aha1542_exit(void) | |
1064 | { | |
1065 | #ifdef CONFIG_PNP | |
1066 | if (pnp_registered) | |
1067 | pnp_unregister_driver(&aha1542_pnp_driver); | |
1068 | #endif | |
1069 | if (isa_registered) | |
1070 | isa_unregister_driver(&aha1542_isa_driver); | |
1071 | } | |
1072 | ||
1073 | module_init(aha1542_init); | |
1074 | module_exit(aha1542_exit); |