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09c434b8 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
1d084d20 OZ |
2 | /* |
3 | * Driver for Adaptec AHA-1542 SCSI host adapters | |
1da177e4 LT |
4 | * |
5 | * Copyright (C) 1992 Tommy Thorn | |
6 | * Copyright (C) 1993, 1994, 1995 Eric Youngdale | |
1d084d20 | 7 | * Copyright (C) 2015 Ondrej Zary |
1da177e4 LT |
8 | */ |
9 | ||
1da177e4 LT |
10 | #include <linux/module.h> |
11 | #include <linux/interrupt.h> | |
12 | #include <linux/kernel.h> | |
13 | #include <linux/types.h> | |
14 | #include <linux/string.h> | |
1da177e4 | 15 | #include <linux/delay.h> |
1da177e4 LT |
16 | #include <linux/init.h> |
17 | #include <linux/spinlock.h> | |
643a7c43 OZ |
18 | #include <linux/isa.h> |
19 | #include <linux/pnp.h> | |
5a0e3ad6 | 20 | #include <linux/slab.h> |
954a9fd7 | 21 | #include <linux/io.h> |
1da177e4 | 22 | #include <asm/dma.h> |
954a9fd7 OZ |
23 | #include <scsi/scsi_cmnd.h> |
24 | #include <scsi/scsi_device.h> | |
1da177e4 LT |
25 | #include <scsi/scsi_host.h> |
26 | #include "aha1542.h" | |
1da177e4 | 27 | |
f71429ab | 28 | #define MAXBOARDS 4 |
1da177e4 | 29 | |
f71429ab OZ |
30 | static bool isapnp = 1; |
31 | module_param(isapnp, bool, 0); | |
32 | MODULE_PARM_DESC(isapnp, "enable PnP support (default=1)"); | |
1da177e4 | 33 | |
f71429ab | 34 | static int io[MAXBOARDS] = { 0x330, 0x334, 0, 0 }; |
88f06b76 | 35 | module_param_hw_array(io, int, ioport, NULL, 0); |
f71429ab | 36 | MODULE_PARM_DESC(io, "base IO address of controller (0x130,0x134,0x230,0x234,0x330,0x334, default=0x330,0x334)"); |
1da177e4 | 37 | |
f71429ab OZ |
38 | /* time AHA spends on the AT-bus during data transfer */ |
39 | static int bus_on[MAXBOARDS] = { -1, -1, -1, -1 }; /* power-on default: 11us */ | |
40 | module_param_array(bus_on, int, NULL, 0); | |
41 | MODULE_PARM_DESC(bus_on, "bus on time [us] (2-15, default=-1 [HW default: 11])"); | |
1da177e4 | 42 | |
f71429ab OZ |
43 | /* time AHA spends off the bus (not to monopolize it) during data transfer */ |
44 | static int bus_off[MAXBOARDS] = { -1, -1, -1, -1 }; /* power-on default: 4us */ | |
45 | module_param_array(bus_off, int, NULL, 0); | |
46 | MODULE_PARM_DESC(bus_off, "bus off time [us] (1-64, default=-1 [HW default: 4])"); | |
1da177e4 | 47 | |
f71429ab OZ |
48 | /* default is jumper selected (J1 on 1542A), factory default = 5 MB/s */ |
49 | static int dma_speed[MAXBOARDS] = { -1, -1, -1, -1 }; | |
50 | module_param_array(dma_speed, int, NULL, 0); | |
51 | MODULE_PARM_DESC(dma_speed, "DMA speed [MB/s] (5,6,7,8,10, default=-1 [by jumper])"); | |
1da177e4 | 52 | |
1da177e4 LT |
53 | #define BIOS_TRANSLATION_6432 1 /* Default case these days */ |
54 | #define BIOS_TRANSLATION_25563 2 /* Big disk case */ | |
55 | ||
56 | struct aha1542_hostdata { | |
57 | /* This will effectively start both of them at the first mailbox */ | |
58 | int bios_translation; /* Mapping bios uses - for compatibility */ | |
59 | int aha1542_last_mbi_used; | |
60 | int aha1542_last_mbo_used; | |
55b28f9f | 61 | struct scsi_cmnd *int_cmds[AHA1542_MAILBOXES]; |
1794ef2b CH |
62 | struct mailbox *mb; |
63 | dma_addr_t mb_handle; | |
64 | struct ccb *ccb; | |
65 | dma_addr_t ccb_handle; | |
66 | }; | |
67 | ||
68 | struct aha1542_cmd { | |
69 | struct chain *chain; | |
70 | dma_addr_t chain_handle; | |
1da177e4 LT |
71 | }; |
72 | ||
f1bbef63 OZ |
73 | static inline void aha1542_intr_reset(u16 base) |
74 | { | |
75 | outb(IRST, CONTROL(base)); | |
76 | } | |
1da177e4 | 77 | |
2093bfa1 OZ |
78 | static inline bool wait_mask(u16 port, u8 mask, u8 allof, u8 noneof, int timeout) |
79 | { | |
80 | bool delayed = true; | |
81 | ||
82 | if (timeout == 0) { | |
83 | timeout = 3000000; | |
84 | delayed = false; | |
85 | } | |
86 | ||
87 | while (1) { | |
88 | u8 bits = inb(port) & mask; | |
89 | if ((bits & allof) == allof && ((bits & noneof) == 0)) | |
90 | break; | |
91 | if (delayed) | |
92 | mdelay(1); | |
93 | if (--timeout == 0) | |
94 | return false; | |
95 | } | |
96 | ||
97 | return true; | |
98 | } | |
1da177e4 | 99 | |
cad2fc72 | 100 | static int aha1542_outb(unsigned int base, u8 val) |
1da177e4 | 101 | { |
eef77801 OZ |
102 | if (!wait_mask(STATUS(base), CDF, 0, CDF, 0)) |
103 | return 1; | |
104 | outb(val, DATA(base)); | |
105 | ||
106 | return 0; | |
0c2b6481 OZ |
107 | } |
108 | ||
cad2fc72 | 109 | static int aha1542_out(unsigned int base, u8 *buf, int len) |
0c2b6481 | 110 | { |
0c2b6481 | 111 | while (len--) { |
1b0224b0 | 112 | if (!wait_mask(STATUS(base), CDF, 0, CDF, 0)) |
0c2b6481 | 113 | return 1; |
cad2fc72 | 114 | outb(*buf++, DATA(base)); |
0c2b6481 | 115 | } |
23e6940a OZ |
116 | if (!wait_mask(INTRFLAGS(base), INTRMASK, HACC, 0, 0)) |
117 | return 1; | |
0c2b6481 | 118 | |
1da177e4 | 119 | return 0; |
1da177e4 LT |
120 | } |
121 | ||
122 | /* Only used at boot time, so we do not need to worry about latency as much | |
123 | here */ | |
124 | ||
cad2fc72 | 125 | static int aha1542_in(unsigned int base, u8 *buf, int len, int timeout) |
1da177e4 | 126 | { |
1da177e4 | 127 | while (len--) { |
1b0224b0 | 128 | if (!wait_mask(STATUS(base), DF, DF, 0, timeout)) |
a13b3722 | 129 | return 1; |
cad2fc72 | 130 | *buf++ = inb(DATA(base)); |
1da177e4 | 131 | } |
1da177e4 | 132 | return 0; |
1da177e4 LT |
133 | } |
134 | ||
135 | static int makecode(unsigned hosterr, unsigned scsierr) | |
136 | { | |
137 | switch (hosterr) { | |
138 | case 0x0: | |
139 | case 0xa: /* Linked command complete without error and linked normally */ | |
140 | case 0xb: /* Linked command complete without error, interrupt generated */ | |
141 | hosterr = 0; | |
142 | break; | |
143 | ||
144 | case 0x11: /* Selection time out-The initiator selection or target | |
145 | reselection was not complete within the SCSI Time out period */ | |
146 | hosterr = DID_TIME_OUT; | |
147 | break; | |
148 | ||
149 | case 0x12: /* Data overrun/underrun-The target attempted to transfer more data | |
150 | than was allocated by the Data Length field or the sum of the | |
151 | Scatter / Gather Data Length fields. */ | |
152 | ||
153 | case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */ | |
154 | ||
155 | case 0x15: /* MBO command was not 00, 01 or 02-The first byte of the CB was | |
156 | invalid. This usually indicates a software failure. */ | |
157 | ||
158 | case 0x16: /* Invalid CCB Operation Code-The first byte of the CCB was invalid. | |
159 | This usually indicates a software failure. */ | |
160 | ||
161 | case 0x17: /* Linked CCB does not have the same LUN-A subsequent CCB of a set | |
162 | of linked CCB's does not specify the same logical unit number as | |
163 | the first. */ | |
164 | case 0x18: /* Invalid Target Direction received from Host-The direction of a | |
165 | Target Mode CCB was invalid. */ | |
166 | ||
167 | case 0x19: /* Duplicate CCB Received in Target Mode-More than once CCB was | |
168 | received to service data transfer between the same target LUN | |
169 | and initiator SCSI ID in the same direction. */ | |
170 | ||
171 | case 0x1a: /* Invalid CCB or Segment List Parameter-A segment list with a zero | |
172 | length segment or invalid segment list boundaries was received. | |
173 | A CCB parameter was invalid. */ | |
fde1fb8a OZ |
174 | #ifdef DEBUG |
175 | printk("Aha1542: %x %x\n", hosterr, scsierr); | |
176 | #endif | |
1da177e4 LT |
177 | hosterr = DID_ERROR; /* Couldn't find any better */ |
178 | break; | |
179 | ||
180 | case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus | |
181 | phase sequence was requested by the target. The host adapter | |
182 | will generate a SCSI Reset Condition, notifying the host with | |
183 | a SCRD interrupt */ | |
184 | hosterr = DID_RESET; | |
185 | break; | |
186 | default: | |
187 | printk(KERN_ERR "aha1542: makecode: unknown hoststatus %x\n", hosterr); | |
188 | break; | |
189 | } | |
190 | return scsierr | (hosterr << 16); | |
191 | } | |
192 | ||
68ea9de3 | 193 | static int aha1542_test_port(struct Scsi_Host *sh) |
1da177e4 | 194 | { |
cb5b570c | 195 | u8 inquiry_result[4]; |
cad2fc72 | 196 | int i; |
1da177e4 LT |
197 | |
198 | /* Quick and dirty test for presence of the card. */ | |
68ea9de3 | 199 | if (inb(STATUS(sh->io_port)) == 0xff) |
1da177e4 LT |
200 | return 0; |
201 | ||
202 | /* Reset the adapter. I ought to make a hard reset, but it's not really necessary */ | |
203 | ||
1da177e4 | 204 | /* In case some other card was probing here, reset interrupts */ |
68ea9de3 | 205 | aha1542_intr_reset(sh->io_port); /* reset interrupts, so they don't block */ |
1da177e4 | 206 | |
68ea9de3 | 207 | outb(SRST | IRST /*|SCRST */ , CONTROL(sh->io_port)); |
1da177e4 LT |
208 | |
209 | mdelay(20); /* Wait a little bit for things to settle down. */ | |
210 | ||
1da177e4 | 211 | /* Expect INIT and IDLE, any of the others are bad */ |
68ea9de3 | 212 | if (!wait_mask(STATUS(sh->io_port), STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0)) |
a13b3722 | 213 | return 0; |
1da177e4 | 214 | |
1da177e4 | 215 | /* Shouldn't have generated any interrupts during reset */ |
68ea9de3 | 216 | if (inb(INTRFLAGS(sh->io_port)) & INTRMASK) |
a13b3722 | 217 | return 0; |
1da177e4 | 218 | |
1da177e4 LT |
219 | /* Perform a host adapter inquiry instead so we do not need to set |
220 | up the mailboxes ahead of time */ | |
221 | ||
68ea9de3 | 222 | aha1542_outb(sh->io_port, CMD_INQUIRY); |
1da177e4 | 223 | |
cad2fc72 | 224 | for (i = 0; i < 4; i++) { |
68ea9de3 | 225 | if (!wait_mask(STATUS(sh->io_port), DF, DF, 0, 0)) |
a13b3722 | 226 | return 0; |
68ea9de3 | 227 | inquiry_result[i] = inb(DATA(sh->io_port)); |
1da177e4 LT |
228 | } |
229 | ||
1da177e4 | 230 | /* Reading port should reset DF */ |
68ea9de3 | 231 | if (inb(STATUS(sh->io_port)) & DF) |
a13b3722 | 232 | return 0; |
1da177e4 | 233 | |
1da177e4 | 234 | /* When HACC, command is completed, and we're though testing */ |
68ea9de3 | 235 | if (!wait_mask(INTRFLAGS(sh->io_port), HACC, HACC, 0, 0)) |
a13b3722 | 236 | return 0; |
1da177e4 | 237 | |
1da177e4 | 238 | /* Clear interrupts */ |
68ea9de3 | 239 | outb(IRST, CONTROL(sh->io_port)); |
1da177e4 | 240 | |
bdebe224 | 241 | return 1; |
1da177e4 LT |
242 | } |
243 | ||
1794ef2b CH |
244 | static void aha1542_free_cmd(struct scsi_cmnd *cmd) |
245 | { | |
246 | struct aha1542_cmd *acmd = scsi_cmd_priv(cmd); | |
247 | struct device *dev = cmd->device->host->dma_dev; | |
248 | size_t len = scsi_sg_count(cmd) * sizeof(struct chain); | |
249 | ||
250 | if (acmd->chain) { | |
251 | dma_unmap_single(dev, acmd->chain_handle, len, DMA_TO_DEVICE); | |
252 | kfree(acmd->chain); | |
253 | } | |
254 | ||
255 | acmd->chain = NULL; | |
256 | scsi_dma_unmap(cmd); | |
257 | } | |
258 | ||
1b0224b0 | 259 | static irqreturn_t aha1542_interrupt(int irq, void *dev_id) |
1da177e4 | 260 | { |
1b0224b0 | 261 | struct Scsi_Host *sh = dev_id; |
c2532f68 | 262 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
55b28f9f | 263 | void (*my_done)(struct scsi_cmnd *) = NULL; |
1da177e4 LT |
264 | int errstatus, mbi, mbo, mbistatus; |
265 | int number_serviced; | |
266 | unsigned long flags; | |
55b28f9f | 267 | struct scsi_cmnd *tmp_cmd; |
1da177e4 | 268 | int flag; |
e98878f7 OZ |
269 | struct mailbox *mb = aha1542->mb; |
270 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 LT |
271 | |
272 | #ifdef DEBUG | |
273 | { | |
c2532f68 | 274 | flag = inb(INTRFLAGS(sh->io_port)); |
2906b3ce | 275 | shost_printk(KERN_DEBUG, sh, "aha1542_intr_handle: "); |
1da177e4 LT |
276 | if (!(flag & ANYINTR)) |
277 | printk("no interrupt?"); | |
278 | if (flag & MBIF) | |
279 | printk("MBIF "); | |
280 | if (flag & MBOA) | |
281 | printk("MBOF "); | |
282 | if (flag & HACC) | |
283 | printk("HACC "); | |
284 | if (flag & SCRD) | |
285 | printk("SCRD "); | |
c2532f68 | 286 | printk("status %02x\n", inb(STATUS(sh->io_port))); |
1da177e4 LT |
287 | }; |
288 | #endif | |
289 | number_serviced = 0; | |
1da177e4 | 290 | |
1b0224b0 OZ |
291 | spin_lock_irqsave(sh->host_lock, flags); |
292 | while (1) { | |
c2532f68 | 293 | flag = inb(INTRFLAGS(sh->io_port)); |
1da177e4 LT |
294 | |
295 | /* Check for unusual interrupts. If any of these happen, we should | |
296 | probably do something special, but for now just printing a message | |
297 | is sufficient. A SCSI reset detected is something that we really | |
298 | need to deal with in some way. */ | |
299 | if (flag & ~MBIF) { | |
300 | if (flag & MBOA) | |
301 | printk("MBOF "); | |
302 | if (flag & HACC) | |
303 | printk("HACC "); | |
dfd7c991 | 304 | if (flag & SCRD) |
1da177e4 | 305 | printk("SCRD "); |
1da177e4 | 306 | } |
c2532f68 | 307 | aha1542_intr_reset(sh->io_port); |
1da177e4 | 308 | |
e98878f7 | 309 | mbi = aha1542->aha1542_last_mbi_used + 1; |
1da177e4 LT |
310 | if (mbi >= 2 * AHA1542_MAILBOXES) |
311 | mbi = AHA1542_MAILBOXES; | |
312 | ||
313 | do { | |
314 | if (mb[mbi].status != 0) | |
315 | break; | |
316 | mbi++; | |
317 | if (mbi >= 2 * AHA1542_MAILBOXES) | |
318 | mbi = AHA1542_MAILBOXES; | |
e98878f7 | 319 | } while (mbi != aha1542->aha1542_last_mbi_used); |
1da177e4 LT |
320 | |
321 | if (mb[mbi].status == 0) { | |
1b0224b0 | 322 | spin_unlock_irqrestore(sh->host_lock, flags); |
1da177e4 | 323 | /* Hmm, no mail. Must have read it the last time around */ |
dfd7c991 | 324 | if (!number_serviced) |
2906b3ce | 325 | shost_printk(KERN_WARNING, sh, "interrupt received, but no mail.\n"); |
1b0224b0 | 326 | return IRQ_HANDLED; |
1da177e4 LT |
327 | }; |
328 | ||
492ca4da | 329 | mbo = (scsi2int(mb[mbi].ccbptr) - (unsigned long)aha1542->ccb_handle) / sizeof(struct ccb); |
1da177e4 LT |
330 | mbistatus = mb[mbi].status; |
331 | mb[mbi].status = 0; | |
e98878f7 | 332 | aha1542->aha1542_last_mbi_used = mbi; |
1da177e4 LT |
333 | |
334 | #ifdef DEBUG | |
fde1fb8a OZ |
335 | if (ccb[mbo].tarstat | ccb[mbo].hastat) |
336 | shost_printk(KERN_DEBUG, sh, "aha1542_command: returning %x (status %d)\n", | |
337 | ccb[mbo].tarstat + ((int) ccb[mbo].hastat << 16), mb[mbi].status); | |
1da177e4 LT |
338 | #endif |
339 | ||
340 | if (mbistatus == 3) | |
341 | continue; /* Aborted command not found */ | |
342 | ||
343 | #ifdef DEBUG | |
2906b3ce | 344 | shost_printk(KERN_DEBUG, sh, "...done %d %d\n", mbo, mbi); |
1da177e4 LT |
345 | #endif |
346 | ||
55b28f9f | 347 | tmp_cmd = aha1542->int_cmds[mbo]; |
1da177e4 | 348 | |
55b28f9f | 349 | if (!tmp_cmd || !tmp_cmd->scsi_done) { |
1b0224b0 | 350 | spin_unlock_irqrestore(sh->host_lock, flags); |
2906b3ce OZ |
351 | shost_printk(KERN_WARNING, sh, "Unexpected interrupt\n"); |
352 | shost_printk(KERN_WARNING, sh, "tarstat=%x, hastat=%x idlun=%x ccb#=%d\n", ccb[mbo].tarstat, | |
1da177e4 | 353 | ccb[mbo].hastat, ccb[mbo].idlun, mbo); |
1b0224b0 | 354 | return IRQ_HANDLED; |
1da177e4 | 355 | } |
55b28f9f | 356 | my_done = tmp_cmd->scsi_done; |
1794ef2b | 357 | aha1542_free_cmd(tmp_cmd); |
1da177e4 LT |
358 | /* Fetch the sense data, and tuck it away, in the required slot. The |
359 | Adaptec automatically fetches it, and there is no guarantee that | |
360 | we will still have it in the cdb when we come back */ | |
361 | if (ccb[mbo].tarstat == 2) | |
55b28f9f | 362 | memcpy(tmp_cmd->sense_buffer, &ccb[mbo].cdb[ccb[mbo].cdblen], |
b80ca4f7 | 363 | SCSI_SENSE_BUFFERSIZE); |
1da177e4 LT |
364 | |
365 | ||
366 | /* is there mail :-) */ | |
367 | ||
368 | /* more error checking left out here */ | |
369 | if (mbistatus != 1) | |
370 | /* This is surely wrong, but I don't know what's right */ | |
371 | errstatus = makecode(ccb[mbo].hastat, ccb[mbo].tarstat); | |
372 | else | |
373 | errstatus = 0; | |
374 | ||
375 | #ifdef DEBUG | |
376 | if (errstatus) | |
2906b3ce | 377 | shost_printk(KERN_DEBUG, sh, "(aha1542 error:%x %x %x) ", errstatus, |
1da177e4 | 378 | ccb[mbo].hastat, ccb[mbo].tarstat); |
6ddc8cf4 OZ |
379 | if (ccb[mbo].tarstat == 2) |
380 | print_hex_dump_bytes("sense: ", DUMP_PREFIX_NONE, &ccb[mbo].cdb[ccb[mbo].cdblen], 12); | |
fde1fb8a OZ |
381 | if (errstatus) |
382 | printk("aha1542_intr_handle: returning %6x\n", errstatus); | |
383 | #endif | |
55b28f9f OZ |
384 | tmp_cmd->result = errstatus; |
385 | aha1542->int_cmds[mbo] = NULL; /* This effectively frees up the mailbox slot, as | |
e98878f7 | 386 | far as queuecommand is concerned */ |
55b28f9f | 387 | my_done(tmp_cmd); |
1da177e4 LT |
388 | number_serviced++; |
389 | }; | |
390 | } | |
391 | ||
1b0224b0 | 392 | static int aha1542_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *cmd) |
09a44833 | 393 | { |
1794ef2b | 394 | struct aha1542_cmd *acmd = scsi_cmd_priv(cmd); |
2906b3ce | 395 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
cb5b570c | 396 | u8 direction; |
55b28f9f OZ |
397 | u8 target = cmd->device->id; |
398 | u8 lun = cmd->device->lun; | |
1da177e4 | 399 | unsigned long flags; |
55b28f9f | 400 | int bufflen = scsi_bufflen(cmd); |
8c08a621 | 401 | int mbo, sg_count; |
e98878f7 OZ |
402 | struct mailbox *mb = aha1542->mb; |
403 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 | 404 | |
55b28f9f | 405 | if (*cmd->cmnd == REQUEST_SENSE) { |
1da177e4 | 406 | /* Don't do the command - we have the sense data already */ |
55b28f9f | 407 | cmd->result = 0; |
1b0224b0 | 408 | cmd->scsi_done(cmd); |
1da177e4 LT |
409 | return 0; |
410 | } | |
411 | #ifdef DEBUG | |
764a0c7e OZ |
412 | { |
413 | int i = -1; | |
414 | if (*cmd->cmnd == READ_10 || *cmd->cmnd == WRITE_10) | |
415 | i = xscsi2int(cmd->cmnd + 2); | |
416 | else if (*cmd->cmnd == READ_6 || *cmd->cmnd == WRITE_6) | |
417 | i = scsi2int(cmd->cmnd + 2); | |
418 | shost_printk(KERN_DEBUG, sh, "aha1542_queuecommand: dev %d cmd %02x pos %d len %d", | |
419 | target, *cmd->cmnd, i, bufflen); | |
420 | print_hex_dump_bytes("command: ", DUMP_PREFIX_NONE, cmd->cmnd, cmd->cmd_len); | |
421 | } | |
1da177e4 | 422 | #endif |
1794ef2b CH |
423 | sg_count = scsi_dma_map(cmd); |
424 | if (sg_count) { | |
425 | size_t len = sg_count * sizeof(struct chain); | |
426 | ||
427 | acmd->chain = kmalloc(len, GFP_DMA); | |
428 | if (!acmd->chain) | |
429 | goto out_unmap; | |
430 | acmd->chain_handle = dma_map_single(sh->dma_dev, acmd->chain, | |
431 | len, DMA_TO_DEVICE); | |
432 | if (dma_mapping_error(sh->dma_dev, acmd->chain_handle)) | |
433 | goto out_free_chain; | |
8c08a621 OZ |
434 | } |
435 | ||
1da177e4 LT |
436 | /* Use the outgoing mailboxes in a round-robin fashion, because this |
437 | is how the host adapter will scan for them */ | |
438 | ||
1b0224b0 | 439 | spin_lock_irqsave(sh->host_lock, flags); |
e98878f7 | 440 | mbo = aha1542->aha1542_last_mbo_used + 1; |
1da177e4 LT |
441 | if (mbo >= AHA1542_MAILBOXES) |
442 | mbo = 0; | |
443 | ||
444 | do { | |
55b28f9f | 445 | if (mb[mbo].status == 0 && aha1542->int_cmds[mbo] == NULL) |
1da177e4 LT |
446 | break; |
447 | mbo++; | |
448 | if (mbo >= AHA1542_MAILBOXES) | |
449 | mbo = 0; | |
e98878f7 | 450 | } while (mbo != aha1542->aha1542_last_mbo_used); |
1da177e4 | 451 | |
55b28f9f | 452 | if (mb[mbo].status || aha1542->int_cmds[mbo]) |
1da177e4 LT |
453 | panic("Unable to find empty mailbox for aha1542.\n"); |
454 | ||
55b28f9f | 455 | aha1542->int_cmds[mbo] = cmd; /* This will effectively prevent someone else from |
e98878f7 | 456 | screwing with this cdb. */ |
1da177e4 | 457 | |
e98878f7 | 458 | aha1542->aha1542_last_mbo_used = mbo; |
1da177e4 LT |
459 | |
460 | #ifdef DEBUG | |
1b0224b0 | 461 | shost_printk(KERN_DEBUG, sh, "Sending command (%d %p)...", mbo, cmd->scsi_done); |
1da177e4 LT |
462 | #endif |
463 | ||
1794ef2b CH |
464 | /* This gets trashed for some reason */ |
465 | any2scsi(mb[mbo].ccbptr, aha1542->ccb_handle + mbo * sizeof(*ccb)); | |
1da177e4 LT |
466 | |
467 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
468 | ||
55b28f9f | 469 | ccb[mbo].cdblen = cmd->cmd_len; |
1da177e4 LT |
470 | |
471 | direction = 0; | |
55b28f9f | 472 | if (*cmd->cmnd == READ_10 || *cmd->cmnd == READ_6) |
1da177e4 | 473 | direction = 8; |
55b28f9f | 474 | else if (*cmd->cmnd == WRITE_10 || *cmd->cmnd == WRITE_6) |
1da177e4 LT |
475 | direction = 16; |
476 | ||
55b28f9f | 477 | memcpy(ccb[mbo].cdb, cmd->cmnd, ccb[mbo].cdblen); |
1da177e4 | 478 | |
fc3fdfcc | 479 | if (bufflen) { |
51cf2249 | 480 | struct scatterlist *sg; |
8c08a621 | 481 | int i; |
6ddc8cf4 | 482 | |
1da177e4 | 483 | ccb[mbo].op = 2; /* SCSI Initiator Command w/scatter-gather */ |
55b28f9f | 484 | scsi_for_each_sg(cmd, sg, sg_count, i) { |
1794ef2b CH |
485 | any2scsi(acmd->chain[i].dataptr, sg_dma_address(sg)); |
486 | any2scsi(acmd->chain[i].datalen, sg_dma_len(sg)); | |
1da177e4 | 487 | }; |
fc3fdfcc | 488 | any2scsi(ccb[mbo].datalen, sg_count * sizeof(struct chain)); |
1794ef2b | 489 | any2scsi(ccb[mbo].dataptr, acmd->chain_handle); |
1da177e4 | 490 | #ifdef DEBUG |
1794ef2b CH |
491 | shost_printk(KERN_DEBUG, sh, "cptr %p: ", acmd->chain); |
492 | print_hex_dump_bytes("cptr: ", DUMP_PREFIX_NONE, acmd->chain, 18); | |
1da177e4 LT |
493 | #endif |
494 | } else { | |
495 | ccb[mbo].op = 0; /* SCSI Initiator Command */ | |
fc3fdfcc BH |
496 | any2scsi(ccb[mbo].datalen, 0); |
497 | any2scsi(ccb[mbo].dataptr, 0); | |
1da177e4 LT |
498 | }; |
499 | ccb[mbo].idlun = (target & 7) << 5 | direction | (lun & 7); /*SCSI Target Id */ | |
500 | ccb[mbo].rsalen = 16; | |
501 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
502 | ccb[mbo].commlinkid = 0; | |
503 | ||
504 | #ifdef DEBUG | |
6ddc8cf4 | 505 | print_hex_dump_bytes("sending: ", DUMP_PREFIX_NONE, &ccb[mbo], sizeof(ccb[mbo]) - 10); |
1b0224b0 | 506 | printk("aha1542_queuecommand: now waiting for interrupt "); |
1da177e4 | 507 | #endif |
1b0224b0 OZ |
508 | mb[mbo].status = 1; |
509 | aha1542_outb(cmd->device->host->io_port, CMD_START_SCSI); | |
510 | spin_unlock_irqrestore(sh->host_lock, flags); | |
1da177e4 LT |
511 | |
512 | return 0; | |
1794ef2b CH |
513 | out_free_chain: |
514 | kfree(acmd->chain); | |
515 | acmd->chain = NULL; | |
516 | out_unmap: | |
517 | scsi_dma_unmap(cmd); | |
518 | return SCSI_MLQUEUE_HOST_BUSY; | |
1da177e4 LT |
519 | } |
520 | ||
521 | /* Initialize mailboxes */ | |
68ea9de3 | 522 | static void setup_mailboxes(struct Scsi_Host *sh) |
1da177e4 | 523 | { |
c2532f68 | 524 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
cad2fc72 | 525 | u8 mb_cmd[5] = { CMD_MBINIT, AHA1542_MAILBOXES, 0, 0, 0}; |
1794ef2b | 526 | int i; |
1da177e4 | 527 | |
1da177e4 | 528 | for (i = 0; i < AHA1542_MAILBOXES; i++) { |
1794ef2b CH |
529 | aha1542->mb[i].status = 0; |
530 | any2scsi(aha1542->mb[i].ccbptr, | |
531 | aha1542->ccb_handle + i * sizeof(struct ccb)); | |
532 | aha1542->mb[AHA1542_MAILBOXES + i].status = 0; | |
1da177e4 | 533 | }; |
68ea9de3 | 534 | aha1542_intr_reset(sh->io_port); /* reset interrupts, so they don't block */ |
1794ef2b | 535 | any2scsi(mb_cmd + 2, aha1542->mb_handle); |
68ea9de3 | 536 | if (aha1542_out(sh->io_port, mb_cmd, 5)) |
2906b3ce | 537 | shost_printk(KERN_ERR, sh, "failed setting up mailboxes\n"); |
68ea9de3 | 538 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
539 | } |
540 | ||
68ea9de3 | 541 | static int aha1542_getconfig(struct Scsi_Host *sh) |
1da177e4 | 542 | { |
cb5b570c | 543 | u8 inquiry_result[3]; |
1da177e4 | 544 | int i; |
68ea9de3 | 545 | i = inb(STATUS(sh->io_port)); |
1da177e4 | 546 | if (i & DF) { |
68ea9de3 | 547 | i = inb(DATA(sh->io_port)); |
1da177e4 | 548 | }; |
68ea9de3 OZ |
549 | aha1542_outb(sh->io_port, CMD_RETCONF); |
550 | aha1542_in(sh->io_port, inquiry_result, 3, 0); | |
551 | if (!wait_mask(INTRFLAGS(sh->io_port), INTRMASK, HACC, 0, 0)) | |
2906b3ce | 552 | shost_printk(KERN_ERR, sh, "error querying board settings\n"); |
68ea9de3 | 553 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
554 | switch (inquiry_result[0]) { |
555 | case 0x80: | |
68ea9de3 | 556 | sh->dma_channel = 7; |
1da177e4 LT |
557 | break; |
558 | case 0x40: | |
68ea9de3 | 559 | sh->dma_channel = 6; |
1da177e4 LT |
560 | break; |
561 | case 0x20: | |
68ea9de3 | 562 | sh->dma_channel = 5; |
1da177e4 LT |
563 | break; |
564 | case 0x01: | |
68ea9de3 | 565 | sh->dma_channel = 0; |
1da177e4 LT |
566 | break; |
567 | case 0: | |
568 | /* This means that the adapter, although Adaptec 1542 compatible, doesn't use a DMA channel. | |
569 | Currently only aware of the BusLogic BT-445S VL-Bus adapter which needs this. */ | |
68ea9de3 | 570 | sh->dma_channel = 0xFF; |
1da177e4 LT |
571 | break; |
572 | default: | |
2906b3ce | 573 | shost_printk(KERN_ERR, sh, "Unable to determine DMA channel.\n"); |
1da177e4 LT |
574 | return -1; |
575 | }; | |
576 | switch (inquiry_result[1]) { | |
577 | case 0x40: | |
68ea9de3 | 578 | sh->irq = 15; |
1da177e4 LT |
579 | break; |
580 | case 0x20: | |
68ea9de3 | 581 | sh->irq = 14; |
1da177e4 LT |
582 | break; |
583 | case 0x8: | |
68ea9de3 | 584 | sh->irq = 12; |
1da177e4 LT |
585 | break; |
586 | case 0x4: | |
68ea9de3 | 587 | sh->irq = 11; |
1da177e4 LT |
588 | break; |
589 | case 0x2: | |
68ea9de3 | 590 | sh->irq = 10; |
1da177e4 LT |
591 | break; |
592 | case 0x1: | |
68ea9de3 | 593 | sh->irq = 9; |
1da177e4 LT |
594 | break; |
595 | default: | |
2906b3ce | 596 | shost_printk(KERN_ERR, sh, "Unable to determine IRQ level.\n"); |
1da177e4 LT |
597 | return -1; |
598 | }; | |
68ea9de3 | 599 | sh->this_id = inquiry_result[2] & 7; |
1da177e4 LT |
600 | return 0; |
601 | } | |
602 | ||
603 | /* This function should only be called for 1542C boards - we can detect | |
604 | the special firmware settings and unlock the board */ | |
605 | ||
68ea9de3 | 606 | static int aha1542_mbenable(struct Scsi_Host *sh) |
1da177e4 | 607 | { |
cb5b570c OZ |
608 | static u8 mbenable_cmd[3]; |
609 | static u8 mbenable_result[2]; | |
1da177e4 LT |
610 | int retval; |
611 | ||
612 | retval = BIOS_TRANSLATION_6432; | |
613 | ||
68ea9de3 OZ |
614 | aha1542_outb(sh->io_port, CMD_EXTBIOS); |
615 | if (aha1542_in(sh->io_port, mbenable_result, 2, 100)) | |
1da177e4 | 616 | return retval; |
68ea9de3 | 617 | if (!wait_mask(INTRFLAGS(sh->io_port), INTRMASK, HACC, 0, 100)) |
2093bfa1 | 618 | goto fail; |
68ea9de3 | 619 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
620 | |
621 | if ((mbenable_result[0] & 0x08) || mbenable_result[1]) { | |
622 | mbenable_cmd[0] = CMD_MBENABLE; | |
623 | mbenable_cmd[1] = 0; | |
624 | mbenable_cmd[2] = mbenable_result[1]; | |
625 | ||
626 | if ((mbenable_result[0] & 0x08) && (mbenable_result[1] & 0x03)) | |
627 | retval = BIOS_TRANSLATION_25563; | |
628 | ||
68ea9de3 | 629 | if (aha1542_out(sh->io_port, mbenable_cmd, 3)) |
2093bfa1 | 630 | goto fail; |
1da177e4 LT |
631 | }; |
632 | while (0) { | |
633 | fail: | |
2906b3ce | 634 | shost_printk(KERN_ERR, sh, "Mailbox init failed\n"); |
1da177e4 | 635 | } |
68ea9de3 | 636 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
637 | return retval; |
638 | } | |
639 | ||
640 | /* Query the board to find out if it is a 1542 or a 1740, or whatever. */ | |
68ea9de3 | 641 | static int aha1542_query(struct Scsi_Host *sh) |
1da177e4 | 642 | { |
68ea9de3 | 643 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
cb5b570c | 644 | u8 inquiry_result[4]; |
1da177e4 | 645 | int i; |
68ea9de3 | 646 | i = inb(STATUS(sh->io_port)); |
1da177e4 | 647 | if (i & DF) { |
68ea9de3 | 648 | i = inb(DATA(sh->io_port)); |
1da177e4 | 649 | }; |
68ea9de3 OZ |
650 | aha1542_outb(sh->io_port, CMD_INQUIRY); |
651 | aha1542_in(sh->io_port, inquiry_result, 4, 0); | |
652 | if (!wait_mask(INTRFLAGS(sh->io_port), INTRMASK, HACC, 0, 0)) | |
2906b3ce | 653 | shost_printk(KERN_ERR, sh, "error querying card type\n"); |
68ea9de3 | 654 | aha1542_intr_reset(sh->io_port); |
1da177e4 | 655 | |
68ea9de3 | 656 | aha1542->bios_translation = BIOS_TRANSLATION_6432; /* Default case */ |
1da177e4 LT |
657 | |
658 | /* For an AHA1740 series board, we ignore the board since there is a | |
659 | hardware bug which can lead to wrong blocks being returned if the board | |
660 | is operating in the 1542 emulation mode. Since there is an extended mode | |
661 | driver, we simply ignore the board and let the 1740 driver pick it up. | |
662 | */ | |
663 | ||
664 | if (inquiry_result[0] == 0x43) { | |
2906b3ce | 665 | shost_printk(KERN_INFO, sh, "Emulation mode not supported for AHA-1740 hardware, use aha1740 driver instead.\n"); |
1da177e4 LT |
666 | return 1; |
667 | }; | |
668 | ||
669 | /* Always call this - boards that do not support extended bios translation | |
670 | will ignore the command, and we will set the proper default */ | |
671 | ||
68ea9de3 | 672 | aha1542->bios_translation = aha1542_mbenable(sh); |
1da177e4 LT |
673 | |
674 | return 0; | |
675 | } | |
676 | ||
f71429ab | 677 | static u8 dma_speed_hw(int dma_speed) |
1da177e4 | 678 | { |
f71429ab OZ |
679 | switch (dma_speed) { |
680 | case 5: | |
681 | return 0x00; | |
682 | case 6: | |
683 | return 0x04; | |
684 | case 7: | |
685 | return 0x01; | |
686 | case 8: | |
687 | return 0x02; | |
688 | case 10: | |
689 | return 0x03; | |
1da177e4 | 690 | } |
1da177e4 | 691 | |
f71429ab | 692 | return 0xff; /* invalid */ |
1da177e4 LT |
693 | } |
694 | ||
f71429ab | 695 | /* Set the Bus on/off-times as not to ruin floppy performance */ |
37d607bd | 696 | static void aha1542_set_bus_times(struct Scsi_Host *sh, int bus_on, int bus_off, int dma_speed) |
1da177e4 | 697 | { |
37d607bd OZ |
698 | if (bus_on > 0) { |
699 | u8 oncmd[] = { CMD_BUSON_TIME, clamp(bus_on, 2, 15) }; | |
1da177e4 | 700 | |
37d607bd OZ |
701 | aha1542_intr_reset(sh->io_port); |
702 | if (aha1542_out(sh->io_port, oncmd, 2)) | |
f71429ab OZ |
703 | goto fail; |
704 | } | |
1da177e4 | 705 | |
37d607bd OZ |
706 | if (bus_off > 0) { |
707 | u8 offcmd[] = { CMD_BUSOFF_TIME, clamp(bus_off, 1, 64) }; | |
1da177e4 | 708 | |
37d607bd OZ |
709 | aha1542_intr_reset(sh->io_port); |
710 | if (aha1542_out(sh->io_port, offcmd, 2)) | |
f71429ab OZ |
711 | goto fail; |
712 | } | |
1da177e4 | 713 | |
37d607bd OZ |
714 | if (dma_speed_hw(dma_speed) != 0xff) { |
715 | u8 dmacmd[] = { CMD_DMASPEED, dma_speed_hw(dma_speed) }; | |
b847fd0d | 716 | |
37d607bd OZ |
717 | aha1542_intr_reset(sh->io_port); |
718 | if (aha1542_out(sh->io_port, dmacmd, 2)) | |
b847fd0d OZ |
719 | goto fail; |
720 | } | |
37d607bd | 721 | aha1542_intr_reset(sh->io_port); |
b847fd0d OZ |
722 | return; |
723 | fail: | |
2906b3ce | 724 | shost_printk(KERN_ERR, sh, "setting bus on/off-time failed\n"); |
37d607bd | 725 | aha1542_intr_reset(sh->io_port); |
b847fd0d OZ |
726 | } |
727 | ||
1da177e4 | 728 | /* return non-zero on detection */ |
643a7c43 | 729 | static struct Scsi_Host *aha1542_hw_init(struct scsi_host_template *tpnt, struct device *pdev, int indx) |
1da177e4 | 730 | { |
f71429ab | 731 | unsigned int base_io = io[indx]; |
c2532f68 | 732 | struct Scsi_Host *sh; |
e98878f7 | 733 | struct aha1542_hostdata *aha1542; |
2906b3ce | 734 | char dma_info[] = "no DMA"; |
1da177e4 | 735 | |
3a70c006 OZ |
736 | if (base_io == 0) |
737 | return NULL; | |
1da177e4 | 738 | |
3a70c006 OZ |
739 | if (!request_region(base_io, AHA1542_REGION_SIZE, "aha1542")) |
740 | return NULL; | |
1da177e4 | 741 | |
c2532f68 OZ |
742 | sh = scsi_host_alloc(tpnt, sizeof(struct aha1542_hostdata)); |
743 | if (!sh) | |
3a70c006 | 744 | goto release; |
c2532f68 | 745 | aha1542 = shost_priv(sh); |
b847fd0d | 746 | |
68ea9de3 OZ |
747 | sh->unique_id = base_io; |
748 | sh->io_port = base_io; | |
749 | sh->n_io_port = AHA1542_REGION_SIZE; | |
750 | aha1542->aha1542_last_mbi_used = 2 * AHA1542_MAILBOXES - 1; | |
751 | aha1542->aha1542_last_mbo_used = AHA1542_MAILBOXES - 1; | |
752 | ||
753 | if (!aha1542_test_port(sh)) | |
3a70c006 | 754 | goto unregister; |
1da177e4 | 755 | |
37d607bd | 756 | aha1542_set_bus_times(sh, bus_on[indx], bus_off[indx], dma_speed[indx]); |
68ea9de3 | 757 | if (aha1542_query(sh)) |
3a70c006 | 758 | goto unregister; |
68ea9de3 | 759 | if (aha1542_getconfig(sh) == -1) |
3a70c006 | 760 | goto unregister; |
1da177e4 | 761 | |
c2532f68 | 762 | if (sh->dma_channel != 0xFF) |
2906b3ce OZ |
763 | snprintf(dma_info, sizeof(dma_info), "DMA %d", sh->dma_channel); |
764 | shost_printk(KERN_INFO, sh, "Adaptec AHA-1542 (SCSI-ID %d) at IO 0x%x, IRQ %d, %s\n", | |
765 | sh->this_id, base_io, sh->irq, dma_info); | |
3a70c006 | 766 | if (aha1542->bios_translation == BIOS_TRANSLATION_25563) |
2906b3ce | 767 | shost_printk(KERN_INFO, sh, "Using extended bios translation\n"); |
1da177e4 | 768 | |
1794ef2b CH |
769 | if (dma_set_mask_and_coherent(pdev, DMA_BIT_MASK(24)) < 0) |
770 | goto unregister; | |
771 | ||
772 | aha1542->mb = dma_alloc_coherent(pdev, | |
773 | AHA1542_MAILBOXES * 2 * sizeof(struct mailbox), | |
774 | &aha1542->mb_handle, GFP_KERNEL); | |
775 | if (!aha1542->mb) | |
776 | goto unregister; | |
777 | ||
778 | aha1542->ccb = dma_alloc_coherent(pdev, | |
779 | AHA1542_MAILBOXES * sizeof(struct ccb), | |
780 | &aha1542->ccb_handle, GFP_KERNEL); | |
781 | if (!aha1542->ccb) | |
782 | goto free_mb; | |
783 | ||
68ea9de3 | 784 | setup_mailboxes(sh); |
1da177e4 | 785 | |
1b0224b0 | 786 | if (request_irq(sh->irq, aha1542_interrupt, 0, "aha1542", sh)) { |
2906b3ce | 787 | shost_printk(KERN_ERR, sh, "Unable to allocate IRQ.\n"); |
1794ef2b | 788 | goto free_ccb; |
3a70c006 | 789 | } |
c2532f68 OZ |
790 | if (sh->dma_channel != 0xFF) { |
791 | if (request_dma(sh->dma_channel, "aha1542")) { | |
2906b3ce | 792 | shost_printk(KERN_ERR, sh, "Unable to allocate DMA channel.\n"); |
3a70c006 OZ |
793 | goto free_irq; |
794 | } | |
c2532f68 OZ |
795 | if (sh->dma_channel == 0 || sh->dma_channel >= 5) { |
796 | set_dma_mode(sh->dma_channel, DMA_MODE_CASCADE); | |
797 | enable_dma(sh->dma_channel); | |
3a70c006 OZ |
798 | } |
799 | } | |
1da177e4 | 800 | |
c2532f68 | 801 | if (scsi_add_host(sh, pdev)) |
3a70c006 | 802 | goto free_dma; |
1da177e4 | 803 | |
c2532f68 | 804 | scsi_scan_host(sh); |
1da177e4 | 805 | |
c2532f68 | 806 | return sh; |
1794ef2b | 807 | |
3a70c006 | 808 | free_dma: |
c2532f68 OZ |
809 | if (sh->dma_channel != 0xff) |
810 | free_dma(sh->dma_channel); | |
3a70c006 | 811 | free_irq: |
c2532f68 | 812 | free_irq(sh->irq, sh); |
1794ef2b CH |
813 | free_ccb: |
814 | dma_free_coherent(pdev, AHA1542_MAILBOXES * sizeof(struct ccb), | |
815 | aha1542->ccb, aha1542->ccb_handle); | |
816 | free_mb: | |
817 | dma_free_coherent(pdev, AHA1542_MAILBOXES * 2 * sizeof(struct mailbox), | |
818 | aha1542->mb, aha1542->mb_handle); | |
3a70c006 | 819 | unregister: |
c2532f68 | 820 | scsi_host_put(sh); |
3a70c006 OZ |
821 | release: |
822 | release_region(base_io, AHA1542_REGION_SIZE); | |
1da177e4 | 823 | |
643a7c43 | 824 | return NULL; |
1da177e4 LT |
825 | } |
826 | ||
c2532f68 | 827 | static int aha1542_release(struct Scsi_Host *sh) |
1da177e4 | 828 | { |
1794ef2b CH |
829 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
830 | struct device *dev = sh->dma_dev; | |
831 | ||
c2532f68 OZ |
832 | scsi_remove_host(sh); |
833 | if (sh->dma_channel != 0xff) | |
834 | free_dma(sh->dma_channel); | |
1794ef2b CH |
835 | dma_free_coherent(dev, AHA1542_MAILBOXES * sizeof(struct ccb), |
836 | aha1542->ccb, aha1542->ccb_handle); | |
837 | dma_free_coherent(dev, AHA1542_MAILBOXES * 2 * sizeof(struct mailbox), | |
838 | aha1542->mb, aha1542->mb_handle); | |
c2532f68 OZ |
839 | if (sh->irq) |
840 | free_irq(sh->irq, sh); | |
841 | if (sh->io_port && sh->n_io_port) | |
842 | release_region(sh->io_port, sh->n_io_port); | |
843 | scsi_host_put(sh); | |
1da177e4 LT |
844 | return 0; |
845 | } | |
846 | ||
1da177e4 | 847 | |
1da177e4 LT |
848 | /* |
849 | * This is a device reset. This is handled by sending a special command | |
850 | * to the device. | |
851 | */ | |
55b28f9f | 852 | static int aha1542_dev_reset(struct scsi_cmnd *cmd) |
1da177e4 | 853 | { |
1b0224b0 OZ |
854 | struct Scsi_Host *sh = cmd->device->host; |
855 | struct aha1542_hostdata *aha1542 = shost_priv(sh); | |
1da177e4 | 856 | unsigned long flags; |
e98878f7 | 857 | struct mailbox *mb = aha1542->mb; |
55b28f9f OZ |
858 | u8 target = cmd->device->id; |
859 | u8 lun = cmd->device->lun; | |
1da177e4 | 860 | int mbo; |
e98878f7 | 861 | struct ccb *ccb = aha1542->ccb; |
1da177e4 | 862 | |
1b0224b0 | 863 | spin_lock_irqsave(sh->host_lock, flags); |
e98878f7 | 864 | mbo = aha1542->aha1542_last_mbo_used + 1; |
1da177e4 LT |
865 | if (mbo >= AHA1542_MAILBOXES) |
866 | mbo = 0; | |
867 | ||
868 | do { | |
55b28f9f | 869 | if (mb[mbo].status == 0 && aha1542->int_cmds[mbo] == NULL) |
1da177e4 LT |
870 | break; |
871 | mbo++; | |
872 | if (mbo >= AHA1542_MAILBOXES) | |
873 | mbo = 0; | |
e98878f7 | 874 | } while (mbo != aha1542->aha1542_last_mbo_used); |
1da177e4 | 875 | |
55b28f9f | 876 | if (mb[mbo].status || aha1542->int_cmds[mbo]) |
1da177e4 LT |
877 | panic("Unable to find empty mailbox for aha1542.\n"); |
878 | ||
55b28f9f | 879 | aha1542->int_cmds[mbo] = cmd; /* This will effectively |
e98878f7 OZ |
880 | prevent someone else from |
881 | screwing with this cdb. */ | |
1da177e4 | 882 | |
e98878f7 | 883 | aha1542->aha1542_last_mbo_used = mbo; |
1da177e4 | 884 | |
1794ef2b CH |
885 | /* This gets trashed for some reason */ |
886 | any2scsi(mb[mbo].ccbptr, aha1542->ccb_handle + mbo * sizeof(*ccb)); | |
1da177e4 LT |
887 | |
888 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
889 | ||
890 | ccb[mbo].op = 0x81; /* BUS DEVICE RESET */ | |
891 | ||
892 | ccb[mbo].idlun = (target & 7) << 5 | (lun & 7); /*SCSI Target Id */ | |
893 | ||
894 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
895 | ccb[mbo].commlinkid = 0; | |
896 | ||
897 | /* | |
898 | * Now tell the 1542 to flush all pending commands for this | |
899 | * target | |
900 | */ | |
1b0224b0 OZ |
901 | aha1542_outb(sh->io_port, CMD_START_SCSI); |
902 | spin_unlock_irqrestore(sh->host_lock, flags); | |
1da177e4 | 903 | |
55b28f9f | 904 | scmd_printk(KERN_WARNING, cmd, |
017560fc | 905 | "Trying device reset for target\n"); |
1da177e4 LT |
906 | |
907 | return SUCCESS; | |
1da177e4 LT |
908 | } |
909 | ||
55b28f9f | 910 | static int aha1542_reset(struct scsi_cmnd *cmd, u8 reset_cmd) |
1da177e4 | 911 | { |
1b0224b0 OZ |
912 | struct Scsi_Host *sh = cmd->device->host; |
913 | struct aha1542_hostdata *aha1542 = shost_priv(sh); | |
914 | unsigned long flags; | |
1da177e4 LT |
915 | int i; |
916 | ||
1b0224b0 | 917 | spin_lock_irqsave(sh->host_lock, flags); |
1da177e4 LT |
918 | /* |
919 | * This does a scsi reset for all devices on the bus. | |
920 | * In principle, we could also reset the 1542 - should | |
921 | * we do this? Try this first, and we can add that later | |
922 | * if it turns out to be useful. | |
923 | */ | |
55b28f9f | 924 | outb(reset_cmd, CONTROL(cmd->device->host->io_port)); |
1da177e4 | 925 | |
55b28f9f | 926 | if (!wait_mask(STATUS(cmd->device->host->io_port), |
7061dec4 | 927 | STATMASK, IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0)) { |
1b0224b0 | 928 | spin_unlock_irqrestore(sh->host_lock, flags); |
a13b3722 OZ |
929 | return FAILED; |
930 | } | |
1b0224b0 | 931 | |
8537cba8 OZ |
932 | /* |
933 | * We need to do this too before the 1542 can interact with | |
934 | * us again after host reset. | |
935 | */ | |
936 | if (reset_cmd & HRST) | |
68ea9de3 | 937 | setup_mailboxes(cmd->device->host); |
1b0224b0 | 938 | |
1da177e4 LT |
939 | /* |
940 | * Now try to pick up the pieces. For all pending commands, | |
941 | * free any internal data structures, and basically clear things | |
942 | * out. We do not try and restart any commands or anything - | |
943 | * the strategy handler takes care of that crap. | |
944 | */ | |
2906b3ce | 945 | shost_printk(KERN_WARNING, cmd->device->host, "Sent BUS RESET to scsi host %d\n", cmd->device->host->host_no); |
1da177e4 LT |
946 | |
947 | for (i = 0; i < AHA1542_MAILBOXES; i++) { | |
55b28f9f OZ |
948 | if (aha1542->int_cmds[i] != NULL) { |
949 | struct scsi_cmnd *tmp_cmd; | |
950 | tmp_cmd = aha1542->int_cmds[i]; | |
1da177e4 | 951 | |
55b28f9f | 952 | if (tmp_cmd->device->soft_reset) { |
1da177e4 LT |
953 | /* |
954 | * If this device implements the soft reset option, | |
955 | * then it is still holding onto the command, and | |
956 | * may yet complete it. In this case, we don't | |
957 | * flush the data. | |
958 | */ | |
959 | continue; | |
960 | } | |
1794ef2b | 961 | aha1542_free_cmd(tmp_cmd); |
55b28f9f | 962 | aha1542->int_cmds[i] = NULL; |
e98878f7 | 963 | aha1542->mb[i].status = 0; |
1da177e4 LT |
964 | } |
965 | } | |
966 | ||
1b0224b0 | 967 | spin_unlock_irqrestore(sh->host_lock, flags); |
1da177e4 | 968 | return SUCCESS; |
1da177e4 LT |
969 | } |
970 | ||
55b28f9f | 971 | static int aha1542_bus_reset(struct scsi_cmnd *cmd) |
1da177e4 | 972 | { |
55b28f9f | 973 | return aha1542_reset(cmd, SCRST); |
8537cba8 | 974 | } |
1da177e4 | 975 | |
55b28f9f | 976 | static int aha1542_host_reset(struct scsi_cmnd *cmd) |
8537cba8 | 977 | { |
55b28f9f | 978 | return aha1542_reset(cmd, HRST | SCRST); |
1da177e4 LT |
979 | } |
980 | ||
1da177e4 | 981 | static int aha1542_biosparam(struct scsi_device *sdev, |
17787a09 | 982 | struct block_device *bdev, sector_t capacity, int geom[]) |
1da177e4 | 983 | { |
e98878f7 | 984 | struct aha1542_hostdata *aha1542 = shost_priv(sdev->host); |
1da177e4 | 985 | |
17787a09 OZ |
986 | if (capacity >= 0x200000 && |
987 | aha1542->bios_translation == BIOS_TRANSLATION_25563) { | |
1da177e4 | 988 | /* Please verify that this is the same as what DOS returns */ |
17787a09 OZ |
989 | geom[0] = 255; /* heads */ |
990 | geom[1] = 63; /* sectors */ | |
1da177e4 | 991 | } else { |
17787a09 OZ |
992 | geom[0] = 64; /* heads */ |
993 | geom[1] = 32; /* sectors */ | |
1da177e4 | 994 | } |
17787a09 | 995 | geom[2] = sector_div(capacity, geom[0] * geom[1]); /* cylinders */ |
1da177e4 LT |
996 | |
997 | return 0; | |
998 | } | |
999 | MODULE_LICENSE("GPL"); | |
1000 | ||
d0be4a7d | 1001 | static struct scsi_host_template driver_template = { |
643a7c43 | 1002 | .module = THIS_MODULE, |
1da177e4 LT |
1003 | .proc_name = "aha1542", |
1004 | .name = "Adaptec 1542", | |
1794ef2b | 1005 | .cmd_size = sizeof(struct aha1542_cmd), |
1da177e4 | 1006 | .queuecommand = aha1542_queuecommand, |
1da177e4 LT |
1007 | .eh_device_reset_handler= aha1542_dev_reset, |
1008 | .eh_bus_reset_handler = aha1542_bus_reset, | |
1009 | .eh_host_reset_handler = aha1542_host_reset, | |
1010 | .bios_param = aha1542_biosparam, | |
1011 | .can_queue = AHA1542_MAILBOXES, | |
1012 | .this_id = 7, | |
10be6250 | 1013 | .sg_tablesize = 16, |
1da177e4 | 1014 | .unchecked_isa_dma = 1, |
1da177e4 | 1015 | }; |
643a7c43 OZ |
1016 | |
1017 | static int aha1542_isa_match(struct device *pdev, unsigned int ndev) | |
1018 | { | |
1019 | struct Scsi_Host *sh = aha1542_hw_init(&driver_template, pdev, ndev); | |
1020 | ||
1021 | if (!sh) | |
1022 | return 0; | |
1023 | ||
1024 | dev_set_drvdata(pdev, sh); | |
1025 | return 1; | |
1026 | } | |
1027 | ||
1028 | static int aha1542_isa_remove(struct device *pdev, | |
1029 | unsigned int ndev) | |
1030 | { | |
1031 | aha1542_release(dev_get_drvdata(pdev)); | |
1032 | dev_set_drvdata(pdev, NULL); | |
1033 | return 0; | |
1034 | } | |
1035 | ||
1036 | static struct isa_driver aha1542_isa_driver = { | |
1037 | .match = aha1542_isa_match, | |
1038 | .remove = aha1542_isa_remove, | |
1039 | .driver = { | |
1040 | .name = "aha1542" | |
1041 | }, | |
1042 | }; | |
1043 | static int isa_registered; | |
1044 | ||
1045 | #ifdef CONFIG_PNP | |
78453a31 | 1046 | static const struct pnp_device_id aha1542_pnp_ids[] = { |
643a7c43 OZ |
1047 | { .id = "ADP1542" }, |
1048 | { .id = "" } | |
1049 | }; | |
1050 | MODULE_DEVICE_TABLE(pnp, aha1542_pnp_ids); | |
1051 | ||
1052 | static int aha1542_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *id) | |
1053 | { | |
1054 | int indx; | |
1055 | struct Scsi_Host *sh; | |
1056 | ||
f71429ab OZ |
1057 | for (indx = 0; indx < ARRAY_SIZE(io); indx++) { |
1058 | if (io[indx]) | |
643a7c43 OZ |
1059 | continue; |
1060 | ||
1061 | if (pnp_activate_dev(pdev) < 0) | |
1062 | continue; | |
1063 | ||
f71429ab | 1064 | io[indx] = pnp_port_start(pdev, 0); |
643a7c43 OZ |
1065 | |
1066 | /* The card can be queried for its DMA, we have | |
1067 | the DMA set up that is enough */ | |
1068 | ||
2906b3ce | 1069 | dev_info(&pdev->dev, "ISAPnP found an AHA1535 at I/O 0x%03X", io[indx]); |
643a7c43 OZ |
1070 | } |
1071 | ||
1072 | sh = aha1542_hw_init(&driver_template, &pdev->dev, indx); | |
1073 | if (!sh) | |
1074 | return -ENODEV; | |
1075 | ||
1076 | pnp_set_drvdata(pdev, sh); | |
1077 | return 0; | |
1078 | } | |
1079 | ||
1080 | static void aha1542_pnp_remove(struct pnp_dev *pdev) | |
1081 | { | |
1082 | aha1542_release(pnp_get_drvdata(pdev)); | |
1083 | pnp_set_drvdata(pdev, NULL); | |
1084 | } | |
1085 | ||
1086 | static struct pnp_driver aha1542_pnp_driver = { | |
1087 | .name = "aha1542", | |
1088 | .id_table = aha1542_pnp_ids, | |
1089 | .probe = aha1542_pnp_probe, | |
1090 | .remove = aha1542_pnp_remove, | |
1091 | }; | |
1092 | static int pnp_registered; | |
1093 | #endif /* CONFIG_PNP */ | |
1094 | ||
1095 | static int __init aha1542_init(void) | |
1096 | { | |
1097 | int ret = 0; | |
643a7c43 OZ |
1098 | |
1099 | #ifdef CONFIG_PNP | |
1100 | if (isapnp) { | |
1101 | ret = pnp_register_driver(&aha1542_pnp_driver); | |
1102 | if (!ret) | |
1103 | pnp_registered = 1; | |
1104 | } | |
1105 | #endif | |
1106 | ret = isa_register_driver(&aha1542_isa_driver, MAXBOARDS); | |
1107 | if (!ret) | |
1108 | isa_registered = 1; | |
1109 | ||
1110 | #ifdef CONFIG_PNP | |
1111 | if (pnp_registered) | |
1112 | ret = 0; | |
1113 | #endif | |
1114 | if (isa_registered) | |
1115 | ret = 0; | |
1116 | ||
1117 | return ret; | |
1118 | } | |
1119 | ||
1120 | static void __exit aha1542_exit(void) | |
1121 | { | |
1122 | #ifdef CONFIG_PNP | |
1123 | if (pnp_registered) | |
1124 | pnp_unregister_driver(&aha1542_pnp_driver); | |
1125 | #endif | |
1126 | if (isa_registered) | |
1127 | isa_unregister_driver(&aha1542_isa_driver); | |
1128 | } | |
1129 | ||
1130 | module_init(aha1542_init); | |
1131 | module_exit(aha1542_exit); |