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Commit | Line | Data |
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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; | |
406 | } | |
407 | ||
1da177e4 LT |
408 | /* Use the outgoing mailboxes in a round-robin fashion, because this |
409 | is how the host adapter will scan for them */ | |
410 | ||
1b0224b0 | 411 | spin_lock_irqsave(sh->host_lock, flags); |
e98878f7 | 412 | mbo = aha1542->aha1542_last_mbo_used + 1; |
1da177e4 LT |
413 | if (mbo >= AHA1542_MAILBOXES) |
414 | mbo = 0; | |
415 | ||
416 | do { | |
55b28f9f | 417 | if (mb[mbo].status == 0 && aha1542->int_cmds[mbo] == NULL) |
1da177e4 LT |
418 | break; |
419 | mbo++; | |
420 | if (mbo >= AHA1542_MAILBOXES) | |
421 | mbo = 0; | |
e98878f7 | 422 | } while (mbo != aha1542->aha1542_last_mbo_used); |
1da177e4 | 423 | |
55b28f9f | 424 | if (mb[mbo].status || aha1542->int_cmds[mbo]) |
1da177e4 LT |
425 | panic("Unable to find empty mailbox for aha1542.\n"); |
426 | ||
55b28f9f | 427 | aha1542->int_cmds[mbo] = cmd; /* This will effectively prevent someone else from |
e98878f7 | 428 | screwing with this cdb. */ |
1da177e4 | 429 | |
e98878f7 | 430 | aha1542->aha1542_last_mbo_used = mbo; |
1da177e4 LT |
431 | |
432 | #ifdef DEBUG | |
1b0224b0 | 433 | shost_printk(KERN_DEBUG, sh, "Sending command (%d %p)...", mbo, cmd->scsi_done); |
1da177e4 LT |
434 | #endif |
435 | ||
10be6250 | 436 | any2scsi(mb[mbo].ccbptr, isa_virt_to_bus(&ccb[mbo])); /* This gets trashed for some reason */ |
1da177e4 LT |
437 | |
438 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
439 | ||
55b28f9f | 440 | ccb[mbo].cdblen = cmd->cmd_len; |
1da177e4 LT |
441 | |
442 | direction = 0; | |
55b28f9f | 443 | if (*cmd->cmnd == READ_10 || *cmd->cmnd == READ_6) |
1da177e4 | 444 | direction = 8; |
55b28f9f | 445 | else if (*cmd->cmnd == WRITE_10 || *cmd->cmnd == WRITE_6) |
1da177e4 LT |
446 | direction = 16; |
447 | ||
55b28f9f | 448 | memcpy(ccb[mbo].cdb, cmd->cmnd, ccb[mbo].cdblen); |
1da177e4 | 449 | |
fc3fdfcc | 450 | if (bufflen) { |
51cf2249 | 451 | struct scatterlist *sg; |
8c08a621 | 452 | int i; |
6ddc8cf4 | 453 | |
1da177e4 | 454 | ccb[mbo].op = 2; /* SCSI Initiator Command w/scatter-gather */ |
8c08a621 | 455 | cmd->host_scribble = (void *)cptr; |
55b28f9f | 456 | scsi_for_each_sg(cmd, sg, sg_count, i) { |
10be6250 OZ |
457 | any2scsi(cptr[i].dataptr, isa_page_to_bus(sg_page(sg)) |
458 | + sg->offset); | |
51cf2249 | 459 | any2scsi(cptr[i].datalen, sg->length); |
1da177e4 | 460 | }; |
fc3fdfcc | 461 | any2scsi(ccb[mbo].datalen, sg_count * sizeof(struct chain)); |
10be6250 | 462 | any2scsi(ccb[mbo].dataptr, isa_virt_to_bus(cptr)); |
1da177e4 | 463 | #ifdef DEBUG |
6ddc8cf4 OZ |
464 | shost_printk(KERN_DEBUG, sh, "cptr %p: ", cptr); |
465 | print_hex_dump_bytes("cptr: ", DUMP_PREFIX_NONE, cptr, 18); | |
1da177e4 LT |
466 | #endif |
467 | } else { | |
468 | ccb[mbo].op = 0; /* SCSI Initiator Command */ | |
55b28f9f | 469 | cmd->host_scribble = NULL; |
fc3fdfcc BH |
470 | any2scsi(ccb[mbo].datalen, 0); |
471 | any2scsi(ccb[mbo].dataptr, 0); | |
1da177e4 LT |
472 | }; |
473 | ccb[mbo].idlun = (target & 7) << 5 | direction | (lun & 7); /*SCSI Target Id */ | |
474 | ccb[mbo].rsalen = 16; | |
475 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
476 | ccb[mbo].commlinkid = 0; | |
477 | ||
478 | #ifdef DEBUG | |
6ddc8cf4 | 479 | print_hex_dump_bytes("sending: ", DUMP_PREFIX_NONE, &ccb[mbo], sizeof(ccb[mbo]) - 10); |
1b0224b0 | 480 | printk("aha1542_queuecommand: now waiting for interrupt "); |
1da177e4 | 481 | #endif |
1b0224b0 OZ |
482 | mb[mbo].status = 1; |
483 | aha1542_outb(cmd->device->host->io_port, CMD_START_SCSI); | |
484 | spin_unlock_irqrestore(sh->host_lock, flags); | |
1da177e4 LT |
485 | |
486 | return 0; | |
487 | } | |
488 | ||
489 | /* Initialize mailboxes */ | |
68ea9de3 | 490 | static void setup_mailboxes(struct Scsi_Host *sh) |
1da177e4 | 491 | { |
c2532f68 | 492 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
1da177e4 | 493 | int i; |
e98878f7 OZ |
494 | struct mailbox *mb = aha1542->mb; |
495 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 | 496 | |
cad2fc72 | 497 | u8 mb_cmd[5] = { CMD_MBINIT, AHA1542_MAILBOXES, 0, 0, 0}; |
1da177e4 | 498 | |
1da177e4 LT |
499 | for (i = 0; i < AHA1542_MAILBOXES; i++) { |
500 | mb[i].status = mb[AHA1542_MAILBOXES + i].status = 0; | |
10be6250 | 501 | any2scsi(mb[i].ccbptr, isa_virt_to_bus(&ccb[i])); |
1da177e4 | 502 | }; |
68ea9de3 | 503 | aha1542_intr_reset(sh->io_port); /* reset interrupts, so they don't block */ |
cad2fc72 | 504 | any2scsi((mb_cmd + 2), isa_virt_to_bus(mb)); |
68ea9de3 | 505 | if (aha1542_out(sh->io_port, mb_cmd, 5)) |
2906b3ce | 506 | shost_printk(KERN_ERR, sh, "failed setting up mailboxes\n"); |
68ea9de3 | 507 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
508 | } |
509 | ||
68ea9de3 | 510 | static int aha1542_getconfig(struct Scsi_Host *sh) |
1da177e4 | 511 | { |
cb5b570c | 512 | u8 inquiry_result[3]; |
1da177e4 | 513 | int i; |
68ea9de3 | 514 | i = inb(STATUS(sh->io_port)); |
1da177e4 | 515 | if (i & DF) { |
68ea9de3 | 516 | i = inb(DATA(sh->io_port)); |
1da177e4 | 517 | }; |
68ea9de3 OZ |
518 | aha1542_outb(sh->io_port, CMD_RETCONF); |
519 | aha1542_in(sh->io_port, inquiry_result, 3, 0); | |
520 | if (!wait_mask(INTRFLAGS(sh->io_port), INTRMASK, HACC, 0, 0)) | |
2906b3ce | 521 | shost_printk(KERN_ERR, sh, "error querying board settings\n"); |
68ea9de3 | 522 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
523 | switch (inquiry_result[0]) { |
524 | case 0x80: | |
68ea9de3 | 525 | sh->dma_channel = 7; |
1da177e4 LT |
526 | break; |
527 | case 0x40: | |
68ea9de3 | 528 | sh->dma_channel = 6; |
1da177e4 LT |
529 | break; |
530 | case 0x20: | |
68ea9de3 | 531 | sh->dma_channel = 5; |
1da177e4 LT |
532 | break; |
533 | case 0x01: | |
68ea9de3 | 534 | sh->dma_channel = 0; |
1da177e4 LT |
535 | break; |
536 | case 0: | |
537 | /* This means that the adapter, although Adaptec 1542 compatible, doesn't use a DMA channel. | |
538 | Currently only aware of the BusLogic BT-445S VL-Bus adapter which needs this. */ | |
68ea9de3 | 539 | sh->dma_channel = 0xFF; |
1da177e4 LT |
540 | break; |
541 | default: | |
2906b3ce | 542 | shost_printk(KERN_ERR, sh, "Unable to determine DMA channel.\n"); |
1da177e4 LT |
543 | return -1; |
544 | }; | |
545 | switch (inquiry_result[1]) { | |
546 | case 0x40: | |
68ea9de3 | 547 | sh->irq = 15; |
1da177e4 LT |
548 | break; |
549 | case 0x20: | |
68ea9de3 | 550 | sh->irq = 14; |
1da177e4 LT |
551 | break; |
552 | case 0x8: | |
68ea9de3 | 553 | sh->irq = 12; |
1da177e4 LT |
554 | break; |
555 | case 0x4: | |
68ea9de3 | 556 | sh->irq = 11; |
1da177e4 LT |
557 | break; |
558 | case 0x2: | |
68ea9de3 | 559 | sh->irq = 10; |
1da177e4 LT |
560 | break; |
561 | case 0x1: | |
68ea9de3 | 562 | sh->irq = 9; |
1da177e4 LT |
563 | break; |
564 | default: | |
2906b3ce | 565 | shost_printk(KERN_ERR, sh, "Unable to determine IRQ level.\n"); |
1da177e4 LT |
566 | return -1; |
567 | }; | |
68ea9de3 | 568 | sh->this_id = inquiry_result[2] & 7; |
1da177e4 LT |
569 | return 0; |
570 | } | |
571 | ||
572 | /* This function should only be called for 1542C boards - we can detect | |
573 | the special firmware settings and unlock the board */ | |
574 | ||
68ea9de3 | 575 | static int aha1542_mbenable(struct Scsi_Host *sh) |
1da177e4 | 576 | { |
cb5b570c OZ |
577 | static u8 mbenable_cmd[3]; |
578 | static u8 mbenable_result[2]; | |
1da177e4 LT |
579 | int retval; |
580 | ||
581 | retval = BIOS_TRANSLATION_6432; | |
582 | ||
68ea9de3 OZ |
583 | aha1542_outb(sh->io_port, CMD_EXTBIOS); |
584 | if (aha1542_in(sh->io_port, mbenable_result, 2, 100)) | |
1da177e4 | 585 | return retval; |
68ea9de3 | 586 | if (!wait_mask(INTRFLAGS(sh->io_port), INTRMASK, HACC, 0, 100)) |
2093bfa1 | 587 | goto fail; |
68ea9de3 | 588 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
589 | |
590 | if ((mbenable_result[0] & 0x08) || mbenable_result[1]) { | |
591 | mbenable_cmd[0] = CMD_MBENABLE; | |
592 | mbenable_cmd[1] = 0; | |
593 | mbenable_cmd[2] = mbenable_result[1]; | |
594 | ||
595 | if ((mbenable_result[0] & 0x08) && (mbenable_result[1] & 0x03)) | |
596 | retval = BIOS_TRANSLATION_25563; | |
597 | ||
68ea9de3 | 598 | if (aha1542_out(sh->io_port, mbenable_cmd, 3)) |
2093bfa1 | 599 | goto fail; |
1da177e4 LT |
600 | }; |
601 | while (0) { | |
602 | fail: | |
2906b3ce | 603 | shost_printk(KERN_ERR, sh, "Mailbox init failed\n"); |
1da177e4 | 604 | } |
68ea9de3 | 605 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
606 | return retval; |
607 | } | |
608 | ||
609 | /* Query the board to find out if it is a 1542 or a 1740, or whatever. */ | |
68ea9de3 | 610 | static int aha1542_query(struct Scsi_Host *sh) |
1da177e4 | 611 | { |
68ea9de3 | 612 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
cb5b570c | 613 | u8 inquiry_result[4]; |
1da177e4 | 614 | int i; |
68ea9de3 | 615 | i = inb(STATUS(sh->io_port)); |
1da177e4 | 616 | if (i & DF) { |
68ea9de3 | 617 | i = inb(DATA(sh->io_port)); |
1da177e4 | 618 | }; |
68ea9de3 OZ |
619 | aha1542_outb(sh->io_port, CMD_INQUIRY); |
620 | aha1542_in(sh->io_port, inquiry_result, 4, 0); | |
621 | if (!wait_mask(INTRFLAGS(sh->io_port), INTRMASK, HACC, 0, 0)) | |
2906b3ce | 622 | shost_printk(KERN_ERR, sh, "error querying card type\n"); |
68ea9de3 | 623 | aha1542_intr_reset(sh->io_port); |
1da177e4 | 624 | |
68ea9de3 | 625 | aha1542->bios_translation = BIOS_TRANSLATION_6432; /* Default case */ |
1da177e4 LT |
626 | |
627 | /* For an AHA1740 series board, we ignore the board since there is a | |
628 | hardware bug which can lead to wrong blocks being returned if the board | |
629 | is operating in the 1542 emulation mode. Since there is an extended mode | |
630 | driver, we simply ignore the board and let the 1740 driver pick it up. | |
631 | */ | |
632 | ||
633 | if (inquiry_result[0] == 0x43) { | |
2906b3ce | 634 | shost_printk(KERN_INFO, sh, "Emulation mode not supported for AHA-1740 hardware, use aha1740 driver instead.\n"); |
1da177e4 LT |
635 | return 1; |
636 | }; | |
637 | ||
638 | /* Always call this - boards that do not support extended bios translation | |
639 | will ignore the command, and we will set the proper default */ | |
640 | ||
68ea9de3 | 641 | aha1542->bios_translation = aha1542_mbenable(sh); |
1da177e4 LT |
642 | |
643 | return 0; | |
644 | } | |
645 | ||
f71429ab | 646 | static u8 dma_speed_hw(int dma_speed) |
1da177e4 | 647 | { |
f71429ab OZ |
648 | switch (dma_speed) { |
649 | case 5: | |
650 | return 0x00; | |
651 | case 6: | |
652 | return 0x04; | |
653 | case 7: | |
654 | return 0x01; | |
655 | case 8: | |
656 | return 0x02; | |
657 | case 10: | |
658 | return 0x03; | |
1da177e4 | 659 | } |
1da177e4 | 660 | |
f71429ab | 661 | return 0xff; /* invalid */ |
1da177e4 LT |
662 | } |
663 | ||
f71429ab | 664 | /* Set the Bus on/off-times as not to ruin floppy performance */ |
37d607bd | 665 | static void aha1542_set_bus_times(struct Scsi_Host *sh, int bus_on, int bus_off, int dma_speed) |
1da177e4 | 666 | { |
37d607bd OZ |
667 | if (bus_on > 0) { |
668 | u8 oncmd[] = { CMD_BUSON_TIME, clamp(bus_on, 2, 15) }; | |
1da177e4 | 669 | |
37d607bd OZ |
670 | aha1542_intr_reset(sh->io_port); |
671 | if (aha1542_out(sh->io_port, oncmd, 2)) | |
f71429ab OZ |
672 | goto fail; |
673 | } | |
1da177e4 | 674 | |
37d607bd OZ |
675 | if (bus_off > 0) { |
676 | u8 offcmd[] = { CMD_BUSOFF_TIME, clamp(bus_off, 1, 64) }; | |
1da177e4 | 677 | |
37d607bd OZ |
678 | aha1542_intr_reset(sh->io_port); |
679 | if (aha1542_out(sh->io_port, offcmd, 2)) | |
f71429ab OZ |
680 | goto fail; |
681 | } | |
1da177e4 | 682 | |
37d607bd OZ |
683 | if (dma_speed_hw(dma_speed) != 0xff) { |
684 | u8 dmacmd[] = { CMD_DMASPEED, dma_speed_hw(dma_speed) }; | |
b847fd0d | 685 | |
37d607bd OZ |
686 | aha1542_intr_reset(sh->io_port); |
687 | if (aha1542_out(sh->io_port, dmacmd, 2)) | |
b847fd0d OZ |
688 | goto fail; |
689 | } | |
37d607bd | 690 | aha1542_intr_reset(sh->io_port); |
b847fd0d OZ |
691 | return; |
692 | fail: | |
2906b3ce | 693 | shost_printk(KERN_ERR, sh, "setting bus on/off-time failed\n"); |
37d607bd | 694 | aha1542_intr_reset(sh->io_port); |
b847fd0d OZ |
695 | } |
696 | ||
1da177e4 | 697 | /* return non-zero on detection */ |
643a7c43 | 698 | static struct Scsi_Host *aha1542_hw_init(struct scsi_host_template *tpnt, struct device *pdev, int indx) |
1da177e4 | 699 | { |
f71429ab | 700 | unsigned int base_io = io[indx]; |
c2532f68 | 701 | struct Scsi_Host *sh; |
e98878f7 | 702 | struct aha1542_hostdata *aha1542; |
2906b3ce | 703 | char dma_info[] = "no DMA"; |
1da177e4 | 704 | |
3a70c006 OZ |
705 | if (base_io == 0) |
706 | return NULL; | |
1da177e4 | 707 | |
3a70c006 OZ |
708 | if (!request_region(base_io, AHA1542_REGION_SIZE, "aha1542")) |
709 | return NULL; | |
1da177e4 | 710 | |
c2532f68 OZ |
711 | sh = scsi_host_alloc(tpnt, sizeof(struct aha1542_hostdata)); |
712 | if (!sh) | |
3a70c006 | 713 | goto release; |
c2532f68 | 714 | aha1542 = shost_priv(sh); |
b847fd0d | 715 | |
68ea9de3 OZ |
716 | sh->unique_id = base_io; |
717 | sh->io_port = base_io; | |
718 | sh->n_io_port = AHA1542_REGION_SIZE; | |
719 | aha1542->aha1542_last_mbi_used = 2 * AHA1542_MAILBOXES - 1; | |
720 | aha1542->aha1542_last_mbo_used = AHA1542_MAILBOXES - 1; | |
721 | ||
722 | if (!aha1542_test_port(sh)) | |
3a70c006 | 723 | goto unregister; |
1da177e4 | 724 | |
37d607bd | 725 | aha1542_set_bus_times(sh, bus_on[indx], bus_off[indx], dma_speed[indx]); |
68ea9de3 | 726 | if (aha1542_query(sh)) |
3a70c006 | 727 | goto unregister; |
68ea9de3 | 728 | if (aha1542_getconfig(sh) == -1) |
3a70c006 | 729 | goto unregister; |
1da177e4 | 730 | |
c2532f68 | 731 | if (sh->dma_channel != 0xFF) |
2906b3ce OZ |
732 | snprintf(dma_info, sizeof(dma_info), "DMA %d", sh->dma_channel); |
733 | shost_printk(KERN_INFO, sh, "Adaptec AHA-1542 (SCSI-ID %d) at IO 0x%x, IRQ %d, %s\n", | |
734 | sh->this_id, base_io, sh->irq, dma_info); | |
3a70c006 | 735 | if (aha1542->bios_translation == BIOS_TRANSLATION_25563) |
2906b3ce | 736 | shost_printk(KERN_INFO, sh, "Using extended bios translation\n"); |
1da177e4 | 737 | |
68ea9de3 | 738 | setup_mailboxes(sh); |
1da177e4 | 739 | |
1b0224b0 | 740 | if (request_irq(sh->irq, aha1542_interrupt, 0, "aha1542", sh)) { |
2906b3ce | 741 | shost_printk(KERN_ERR, sh, "Unable to allocate IRQ.\n"); |
3a70c006 OZ |
742 | goto unregister; |
743 | } | |
c2532f68 OZ |
744 | if (sh->dma_channel != 0xFF) { |
745 | if (request_dma(sh->dma_channel, "aha1542")) { | |
2906b3ce | 746 | shost_printk(KERN_ERR, sh, "Unable to allocate DMA channel.\n"); |
3a70c006 OZ |
747 | goto free_irq; |
748 | } | |
c2532f68 OZ |
749 | if (sh->dma_channel == 0 || sh->dma_channel >= 5) { |
750 | set_dma_mode(sh->dma_channel, DMA_MODE_CASCADE); | |
751 | enable_dma(sh->dma_channel); | |
3a70c006 OZ |
752 | } |
753 | } | |
1da177e4 | 754 | |
c2532f68 | 755 | if (scsi_add_host(sh, pdev)) |
3a70c006 | 756 | goto free_dma; |
1da177e4 | 757 | |
c2532f68 | 758 | scsi_scan_host(sh); |
1da177e4 | 759 | |
c2532f68 | 760 | return sh; |
3a70c006 | 761 | free_dma: |
c2532f68 OZ |
762 | if (sh->dma_channel != 0xff) |
763 | free_dma(sh->dma_channel); | |
3a70c006 | 764 | free_irq: |
c2532f68 | 765 | free_irq(sh->irq, sh); |
3a70c006 | 766 | unregister: |
c2532f68 | 767 | scsi_host_put(sh); |
3a70c006 OZ |
768 | release: |
769 | release_region(base_io, AHA1542_REGION_SIZE); | |
1da177e4 | 770 | |
643a7c43 | 771 | return NULL; |
1da177e4 LT |
772 | } |
773 | ||
c2532f68 | 774 | static int aha1542_release(struct Scsi_Host *sh) |
1da177e4 | 775 | { |
c2532f68 OZ |
776 | scsi_remove_host(sh); |
777 | if (sh->dma_channel != 0xff) | |
778 | free_dma(sh->dma_channel); | |
779 | if (sh->irq) | |
780 | free_irq(sh->irq, sh); | |
781 | if (sh->io_port && sh->n_io_port) | |
782 | release_region(sh->io_port, sh->n_io_port); | |
783 | scsi_host_put(sh); | |
1da177e4 LT |
784 | return 0; |
785 | } | |
786 | ||
1da177e4 | 787 | |
1da177e4 LT |
788 | /* |
789 | * This is a device reset. This is handled by sending a special command | |
790 | * to the device. | |
791 | */ | |
55b28f9f | 792 | static int aha1542_dev_reset(struct scsi_cmnd *cmd) |
1da177e4 | 793 | { |
1b0224b0 OZ |
794 | struct Scsi_Host *sh = cmd->device->host; |
795 | struct aha1542_hostdata *aha1542 = shost_priv(sh); | |
1da177e4 | 796 | unsigned long flags; |
e98878f7 | 797 | struct mailbox *mb = aha1542->mb; |
55b28f9f OZ |
798 | u8 target = cmd->device->id; |
799 | u8 lun = cmd->device->lun; | |
1da177e4 | 800 | int mbo; |
e98878f7 | 801 | struct ccb *ccb = aha1542->ccb; |
1da177e4 | 802 | |
1b0224b0 | 803 | spin_lock_irqsave(sh->host_lock, flags); |
e98878f7 | 804 | mbo = aha1542->aha1542_last_mbo_used + 1; |
1da177e4 LT |
805 | if (mbo >= AHA1542_MAILBOXES) |
806 | mbo = 0; | |
807 | ||
808 | do { | |
55b28f9f | 809 | if (mb[mbo].status == 0 && aha1542->int_cmds[mbo] == NULL) |
1da177e4 LT |
810 | break; |
811 | mbo++; | |
812 | if (mbo >= AHA1542_MAILBOXES) | |
813 | mbo = 0; | |
e98878f7 | 814 | } while (mbo != aha1542->aha1542_last_mbo_used); |
1da177e4 | 815 | |
55b28f9f | 816 | if (mb[mbo].status || aha1542->int_cmds[mbo]) |
1da177e4 LT |
817 | panic("Unable to find empty mailbox for aha1542.\n"); |
818 | ||
55b28f9f | 819 | aha1542->int_cmds[mbo] = cmd; /* This will effectively |
e98878f7 OZ |
820 | prevent someone else from |
821 | screwing with this cdb. */ | |
1da177e4 | 822 | |
e98878f7 | 823 | aha1542->aha1542_last_mbo_used = mbo; |
1da177e4 | 824 | |
10be6250 | 825 | any2scsi(mb[mbo].ccbptr, isa_virt_to_bus(&ccb[mbo])); /* This gets trashed for some reason */ |
1da177e4 LT |
826 | |
827 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
828 | ||
829 | ccb[mbo].op = 0x81; /* BUS DEVICE RESET */ | |
830 | ||
831 | ccb[mbo].idlun = (target & 7) << 5 | (lun & 7); /*SCSI Target Id */ | |
832 | ||
833 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
834 | ccb[mbo].commlinkid = 0; | |
835 | ||
836 | /* | |
837 | * Now tell the 1542 to flush all pending commands for this | |
838 | * target | |
839 | */ | |
1b0224b0 OZ |
840 | aha1542_outb(sh->io_port, CMD_START_SCSI); |
841 | spin_unlock_irqrestore(sh->host_lock, flags); | |
1da177e4 | 842 | |
55b28f9f | 843 | scmd_printk(KERN_WARNING, cmd, |
017560fc | 844 | "Trying device reset for target\n"); |
1da177e4 LT |
845 | |
846 | return SUCCESS; | |
1da177e4 LT |
847 | } |
848 | ||
55b28f9f | 849 | static int aha1542_reset(struct scsi_cmnd *cmd, u8 reset_cmd) |
1da177e4 | 850 | { |
1b0224b0 OZ |
851 | struct Scsi_Host *sh = cmd->device->host; |
852 | struct aha1542_hostdata *aha1542 = shost_priv(sh); | |
853 | unsigned long flags; | |
1da177e4 LT |
854 | int i; |
855 | ||
1b0224b0 | 856 | spin_lock_irqsave(sh->host_lock, flags); |
1da177e4 LT |
857 | /* |
858 | * This does a scsi reset for all devices on the bus. | |
859 | * In principle, we could also reset the 1542 - should | |
860 | * we do this? Try this first, and we can add that later | |
861 | * if it turns out to be useful. | |
862 | */ | |
55b28f9f | 863 | outb(reset_cmd, CONTROL(cmd->device->host->io_port)); |
1da177e4 | 864 | |
55b28f9f | 865 | if (!wait_mask(STATUS(cmd->device->host->io_port), |
7061dec4 | 866 | STATMASK, IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0)) { |
1b0224b0 | 867 | spin_unlock_irqrestore(sh->host_lock, flags); |
a13b3722 OZ |
868 | return FAILED; |
869 | } | |
1b0224b0 | 870 | |
8537cba8 OZ |
871 | /* |
872 | * We need to do this too before the 1542 can interact with | |
873 | * us again after host reset. | |
874 | */ | |
875 | if (reset_cmd & HRST) | |
68ea9de3 | 876 | setup_mailboxes(cmd->device->host); |
1b0224b0 | 877 | |
1da177e4 LT |
878 | /* |
879 | * Now try to pick up the pieces. For all pending commands, | |
880 | * free any internal data structures, and basically clear things | |
881 | * out. We do not try and restart any commands or anything - | |
882 | * the strategy handler takes care of that crap. | |
883 | */ | |
2906b3ce | 884 | shost_printk(KERN_WARNING, cmd->device->host, "Sent BUS RESET to scsi host %d\n", cmd->device->host->host_no); |
1da177e4 LT |
885 | |
886 | for (i = 0; i < AHA1542_MAILBOXES; i++) { | |
55b28f9f OZ |
887 | if (aha1542->int_cmds[i] != NULL) { |
888 | struct scsi_cmnd *tmp_cmd; | |
889 | tmp_cmd = aha1542->int_cmds[i]; | |
1da177e4 | 890 | |
55b28f9f | 891 | if (tmp_cmd->device->soft_reset) { |
1da177e4 LT |
892 | /* |
893 | * If this device implements the soft reset option, | |
894 | * then it is still holding onto the command, and | |
895 | * may yet complete it. In this case, we don't | |
896 | * flush the data. | |
897 | */ | |
898 | continue; | |
899 | } | |
55b28f9f OZ |
900 | kfree(tmp_cmd->host_scribble); |
901 | tmp_cmd->host_scribble = NULL; | |
902 | aha1542->int_cmds[i] = NULL; | |
e98878f7 | 903 | aha1542->mb[i].status = 0; |
1da177e4 LT |
904 | } |
905 | } | |
906 | ||
1b0224b0 | 907 | spin_unlock_irqrestore(sh->host_lock, flags); |
1da177e4 | 908 | return SUCCESS; |
1da177e4 LT |
909 | } |
910 | ||
55b28f9f | 911 | static int aha1542_bus_reset(struct scsi_cmnd *cmd) |
1da177e4 | 912 | { |
55b28f9f | 913 | return aha1542_reset(cmd, SCRST); |
8537cba8 | 914 | } |
1da177e4 | 915 | |
55b28f9f | 916 | static int aha1542_host_reset(struct scsi_cmnd *cmd) |
8537cba8 | 917 | { |
55b28f9f | 918 | return aha1542_reset(cmd, HRST | SCRST); |
1da177e4 LT |
919 | } |
920 | ||
1da177e4 | 921 | static int aha1542_biosparam(struct scsi_device *sdev, |
17787a09 | 922 | struct block_device *bdev, sector_t capacity, int geom[]) |
1da177e4 | 923 | { |
e98878f7 | 924 | struct aha1542_hostdata *aha1542 = shost_priv(sdev->host); |
1da177e4 | 925 | |
17787a09 OZ |
926 | if (capacity >= 0x200000 && |
927 | aha1542->bios_translation == BIOS_TRANSLATION_25563) { | |
1da177e4 | 928 | /* Please verify that this is the same as what DOS returns */ |
17787a09 OZ |
929 | geom[0] = 255; /* heads */ |
930 | geom[1] = 63; /* sectors */ | |
1da177e4 | 931 | } else { |
17787a09 OZ |
932 | geom[0] = 64; /* heads */ |
933 | geom[1] = 32; /* sectors */ | |
1da177e4 | 934 | } |
17787a09 | 935 | geom[2] = sector_div(capacity, geom[0] * geom[1]); /* cylinders */ |
1da177e4 LT |
936 | |
937 | return 0; | |
938 | } | |
939 | MODULE_LICENSE("GPL"); | |
940 | ||
d0be4a7d | 941 | static struct scsi_host_template driver_template = { |
643a7c43 | 942 | .module = THIS_MODULE, |
1da177e4 LT |
943 | .proc_name = "aha1542", |
944 | .name = "Adaptec 1542", | |
1da177e4 | 945 | .queuecommand = aha1542_queuecommand, |
1da177e4 LT |
946 | .eh_device_reset_handler= aha1542_dev_reset, |
947 | .eh_bus_reset_handler = aha1542_bus_reset, | |
948 | .eh_host_reset_handler = aha1542_host_reset, | |
949 | .bios_param = aha1542_biosparam, | |
950 | .can_queue = AHA1542_MAILBOXES, | |
951 | .this_id = 7, | |
10be6250 | 952 | .sg_tablesize = 16, |
1da177e4 LT |
953 | .unchecked_isa_dma = 1, |
954 | .use_clustering = ENABLE_CLUSTERING, | |
955 | }; | |
643a7c43 OZ |
956 | |
957 | static int aha1542_isa_match(struct device *pdev, unsigned int ndev) | |
958 | { | |
959 | struct Scsi_Host *sh = aha1542_hw_init(&driver_template, pdev, ndev); | |
960 | ||
961 | if (!sh) | |
962 | return 0; | |
963 | ||
964 | dev_set_drvdata(pdev, sh); | |
965 | return 1; | |
966 | } | |
967 | ||
968 | static int aha1542_isa_remove(struct device *pdev, | |
969 | unsigned int ndev) | |
970 | { | |
971 | aha1542_release(dev_get_drvdata(pdev)); | |
972 | dev_set_drvdata(pdev, NULL); | |
973 | return 0; | |
974 | } | |
975 | ||
976 | static struct isa_driver aha1542_isa_driver = { | |
977 | .match = aha1542_isa_match, | |
978 | .remove = aha1542_isa_remove, | |
979 | .driver = { | |
980 | .name = "aha1542" | |
981 | }, | |
982 | }; | |
983 | static int isa_registered; | |
984 | ||
985 | #ifdef CONFIG_PNP | |
986 | static struct pnp_device_id aha1542_pnp_ids[] = { | |
987 | { .id = "ADP1542" }, | |
988 | { .id = "" } | |
989 | }; | |
990 | MODULE_DEVICE_TABLE(pnp, aha1542_pnp_ids); | |
991 | ||
992 | static int aha1542_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *id) | |
993 | { | |
994 | int indx; | |
995 | struct Scsi_Host *sh; | |
996 | ||
f71429ab OZ |
997 | for (indx = 0; indx < ARRAY_SIZE(io); indx++) { |
998 | if (io[indx]) | |
643a7c43 OZ |
999 | continue; |
1000 | ||
1001 | if (pnp_activate_dev(pdev) < 0) | |
1002 | continue; | |
1003 | ||
f71429ab | 1004 | io[indx] = pnp_port_start(pdev, 0); |
643a7c43 OZ |
1005 | |
1006 | /* The card can be queried for its DMA, we have | |
1007 | the DMA set up that is enough */ | |
1008 | ||
2906b3ce | 1009 | dev_info(&pdev->dev, "ISAPnP found an AHA1535 at I/O 0x%03X", io[indx]); |
643a7c43 OZ |
1010 | } |
1011 | ||
1012 | sh = aha1542_hw_init(&driver_template, &pdev->dev, indx); | |
1013 | if (!sh) | |
1014 | return -ENODEV; | |
1015 | ||
1016 | pnp_set_drvdata(pdev, sh); | |
1017 | return 0; | |
1018 | } | |
1019 | ||
1020 | static void aha1542_pnp_remove(struct pnp_dev *pdev) | |
1021 | { | |
1022 | aha1542_release(pnp_get_drvdata(pdev)); | |
1023 | pnp_set_drvdata(pdev, NULL); | |
1024 | } | |
1025 | ||
1026 | static struct pnp_driver aha1542_pnp_driver = { | |
1027 | .name = "aha1542", | |
1028 | .id_table = aha1542_pnp_ids, | |
1029 | .probe = aha1542_pnp_probe, | |
1030 | .remove = aha1542_pnp_remove, | |
1031 | }; | |
1032 | static int pnp_registered; | |
1033 | #endif /* CONFIG_PNP */ | |
1034 | ||
1035 | static int __init aha1542_init(void) | |
1036 | { | |
1037 | int ret = 0; | |
643a7c43 OZ |
1038 | |
1039 | #ifdef CONFIG_PNP | |
1040 | if (isapnp) { | |
1041 | ret = pnp_register_driver(&aha1542_pnp_driver); | |
1042 | if (!ret) | |
1043 | pnp_registered = 1; | |
1044 | } | |
1045 | #endif | |
1046 | ret = isa_register_driver(&aha1542_isa_driver, MAXBOARDS); | |
1047 | if (!ret) | |
1048 | isa_registered = 1; | |
1049 | ||
1050 | #ifdef CONFIG_PNP | |
1051 | if (pnp_registered) | |
1052 | ret = 0; | |
1053 | #endif | |
1054 | if (isa_registered) | |
1055 | ret = 0; | |
1056 | ||
1057 | return ret; | |
1058 | } | |
1059 | ||
1060 | static void __exit aha1542_exit(void) | |
1061 | { | |
1062 | #ifdef CONFIG_PNP | |
1063 | if (pnp_registered) | |
1064 | pnp_unregister_driver(&aha1542_pnp_driver); | |
1065 | #endif | |
1066 | if (isa_registered) | |
1067 | isa_unregister_driver(&aha1542_isa_driver); | |
1068 | } | |
1069 | ||
1070 | module_init(aha1542_init); | |
1071 | module_exit(aha1542_exit); |