Commit | Line | Data |
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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 | ||
2f2fef02 CH |
68 | #define AHA1542_MAX_SECTORS 16 |
69 | ||
1794ef2b | 70 | struct aha1542_cmd { |
2f2fef02 CH |
71 | /* bounce buffer */ |
72 | void *data_buffer; | |
73 | dma_addr_t data_buffer_handle; | |
1da177e4 LT |
74 | }; |
75 | ||
f1bbef63 OZ |
76 | static inline void aha1542_intr_reset(u16 base) |
77 | { | |
78 | outb(IRST, CONTROL(base)); | |
79 | } | |
1da177e4 | 80 | |
2093bfa1 OZ |
81 | static inline bool wait_mask(u16 port, u8 mask, u8 allof, u8 noneof, int timeout) |
82 | { | |
83 | bool delayed = true; | |
84 | ||
85 | if (timeout == 0) { | |
86 | timeout = 3000000; | |
87 | delayed = false; | |
88 | } | |
89 | ||
90 | while (1) { | |
91 | u8 bits = inb(port) & mask; | |
92 | if ((bits & allof) == allof && ((bits & noneof) == 0)) | |
93 | break; | |
94 | if (delayed) | |
95 | mdelay(1); | |
96 | if (--timeout == 0) | |
97 | return false; | |
98 | } | |
99 | ||
100 | return true; | |
101 | } | |
1da177e4 | 102 | |
cad2fc72 | 103 | static int aha1542_outb(unsigned int base, u8 val) |
1da177e4 | 104 | { |
eef77801 OZ |
105 | if (!wait_mask(STATUS(base), CDF, 0, CDF, 0)) |
106 | return 1; | |
107 | outb(val, DATA(base)); | |
108 | ||
109 | return 0; | |
0c2b6481 OZ |
110 | } |
111 | ||
cad2fc72 | 112 | static int aha1542_out(unsigned int base, u8 *buf, int len) |
0c2b6481 | 113 | { |
0c2b6481 | 114 | while (len--) { |
1b0224b0 | 115 | if (!wait_mask(STATUS(base), CDF, 0, CDF, 0)) |
0c2b6481 | 116 | return 1; |
cad2fc72 | 117 | outb(*buf++, DATA(base)); |
0c2b6481 | 118 | } |
23e6940a OZ |
119 | if (!wait_mask(INTRFLAGS(base), INTRMASK, HACC, 0, 0)) |
120 | return 1; | |
0c2b6481 | 121 | |
1da177e4 | 122 | return 0; |
1da177e4 LT |
123 | } |
124 | ||
e4da5feb SS |
125 | /* |
126 | * Only used at boot time, so we do not need to worry about latency as much | |
127 | * here | |
128 | */ | |
1da177e4 | 129 | |
cad2fc72 | 130 | static int aha1542_in(unsigned int base, u8 *buf, int len, int timeout) |
1da177e4 | 131 | { |
1da177e4 | 132 | while (len--) { |
1b0224b0 | 133 | if (!wait_mask(STATUS(base), DF, DF, 0, timeout)) |
a13b3722 | 134 | return 1; |
cad2fc72 | 135 | *buf++ = inb(DATA(base)); |
1da177e4 | 136 | } |
1da177e4 | 137 | return 0; |
1da177e4 LT |
138 | } |
139 | ||
140 | static int makecode(unsigned hosterr, unsigned scsierr) | |
141 | { | |
142 | switch (hosterr) { | |
143 | case 0x0: | |
144 | case 0xa: /* Linked command complete without error and linked normally */ | |
145 | case 0xb: /* Linked command complete without error, interrupt generated */ | |
146 | hosterr = 0; | |
147 | break; | |
148 | ||
149 | case 0x11: /* Selection time out-The initiator selection or target | |
e4da5feb SS |
150 | * reselection was not complete within the SCSI Time out period |
151 | */ | |
1da177e4 LT |
152 | hosterr = DID_TIME_OUT; |
153 | break; | |
154 | ||
155 | case 0x12: /* Data overrun/underrun-The target attempted to transfer more data | |
e4da5feb SS |
156 | * than was allocated by the Data Length field or the sum of the |
157 | * Scatter / Gather Data Length fields. | |
158 | */ | |
1da177e4 LT |
159 | |
160 | case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */ | |
161 | ||
162 | case 0x15: /* MBO command was not 00, 01 or 02-The first byte of the CB was | |
e4da5feb SS |
163 | * invalid. This usually indicates a software failure. |
164 | */ | |
1da177e4 LT |
165 | |
166 | case 0x16: /* Invalid CCB Operation Code-The first byte of the CCB was invalid. | |
e4da5feb SS |
167 | * This usually indicates a software failure. |
168 | */ | |
1da177e4 LT |
169 | |
170 | case 0x17: /* Linked CCB does not have the same LUN-A subsequent CCB of a set | |
e4da5feb SS |
171 | * of linked CCB's does not specify the same logical unit number as |
172 | * the first. | |
173 | */ | |
1da177e4 | 174 | case 0x18: /* Invalid Target Direction received from Host-The direction of a |
e4da5feb SS |
175 | * Target Mode CCB was invalid. |
176 | */ | |
1da177e4 LT |
177 | |
178 | case 0x19: /* Duplicate CCB Received in Target Mode-More than once CCB was | |
e4da5feb SS |
179 | * received to service data transfer between the same target LUN |
180 | * and initiator SCSI ID in the same direction. | |
181 | */ | |
1da177e4 LT |
182 | |
183 | case 0x1a: /* Invalid CCB or Segment List Parameter-A segment list with a zero | |
e4da5feb SS |
184 | * length segment or invalid segment list boundaries was received. |
185 | * A CCB parameter was invalid. | |
186 | */ | |
fde1fb8a OZ |
187 | #ifdef DEBUG |
188 | printk("Aha1542: %x %x\n", hosterr, scsierr); | |
189 | #endif | |
1da177e4 LT |
190 | hosterr = DID_ERROR; /* Couldn't find any better */ |
191 | break; | |
192 | ||
193 | case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus | |
e4da5feb SS |
194 | * phase sequence was requested by the target. The host adapter |
195 | * will generate a SCSI Reset Condition, notifying the host with | |
196 | * a SCRD interrupt | |
197 | */ | |
1da177e4 LT |
198 | hosterr = DID_RESET; |
199 | break; | |
200 | default: | |
201 | printk(KERN_ERR "aha1542: makecode: unknown hoststatus %x\n", hosterr); | |
202 | break; | |
203 | } | |
204 | return scsierr | (hosterr << 16); | |
205 | } | |
206 | ||
68ea9de3 | 207 | static int aha1542_test_port(struct Scsi_Host *sh) |
1da177e4 | 208 | { |
cad2fc72 | 209 | int i; |
1da177e4 LT |
210 | |
211 | /* Quick and dirty test for presence of the card. */ | |
68ea9de3 | 212 | if (inb(STATUS(sh->io_port)) == 0xff) |
1da177e4 LT |
213 | return 0; |
214 | ||
215 | /* Reset the adapter. I ought to make a hard reset, but it's not really necessary */ | |
216 | ||
1da177e4 | 217 | /* In case some other card was probing here, reset interrupts */ |
68ea9de3 | 218 | aha1542_intr_reset(sh->io_port); /* reset interrupts, so they don't block */ |
1da177e4 | 219 | |
68ea9de3 | 220 | outb(SRST | IRST /*|SCRST */ , CONTROL(sh->io_port)); |
1da177e4 LT |
221 | |
222 | mdelay(20); /* Wait a little bit for things to settle down. */ | |
223 | ||
1da177e4 | 224 | /* Expect INIT and IDLE, any of the others are bad */ |
68ea9de3 | 225 | if (!wait_mask(STATUS(sh->io_port), STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0)) |
a13b3722 | 226 | return 0; |
1da177e4 | 227 | |
1da177e4 | 228 | /* Shouldn't have generated any interrupts during reset */ |
68ea9de3 | 229 | if (inb(INTRFLAGS(sh->io_port)) & INTRMASK) |
a13b3722 | 230 | return 0; |
1da177e4 | 231 | |
e4da5feb SS |
232 | /* |
233 | * Perform a host adapter inquiry instead so we do not need to set | |
234 | * up the mailboxes ahead of time | |
235 | */ | |
1da177e4 | 236 | |
68ea9de3 | 237 | aha1542_outb(sh->io_port, CMD_INQUIRY); |
1da177e4 | 238 | |
cad2fc72 | 239 | for (i = 0; i < 4; i++) { |
68ea9de3 | 240 | if (!wait_mask(STATUS(sh->io_port), DF, DF, 0, 0)) |
a13b3722 | 241 | return 0; |
ea1c9475 | 242 | (void)inb(DATA(sh->io_port)); |
1da177e4 LT |
243 | } |
244 | ||
1da177e4 | 245 | /* Reading port should reset DF */ |
68ea9de3 | 246 | if (inb(STATUS(sh->io_port)) & DF) |
a13b3722 | 247 | return 0; |
1da177e4 | 248 | |
1da177e4 | 249 | /* When HACC, command is completed, and we're though testing */ |
68ea9de3 | 250 | if (!wait_mask(INTRFLAGS(sh->io_port), HACC, HACC, 0, 0)) |
a13b3722 | 251 | return 0; |
1da177e4 | 252 | |
1da177e4 | 253 | /* Clear interrupts */ |
68ea9de3 | 254 | outb(IRST, CONTROL(sh->io_port)); |
1da177e4 | 255 | |
bdebe224 | 256 | return 1; |
1da177e4 LT |
257 | } |
258 | ||
1794ef2b CH |
259 | static void aha1542_free_cmd(struct scsi_cmnd *cmd) |
260 | { | |
261 | struct aha1542_cmd *acmd = scsi_cmd_priv(cmd); | |
1794ef2b | 262 | |
2f2fef02 | 263 | if (cmd->sc_data_direction == DMA_FROM_DEVICE) { |
11bf4ec5 | 264 | struct request *rq = scsi_cmd_to_rq(cmd); |
2f2fef02 CH |
265 | void *buf = acmd->data_buffer; |
266 | struct req_iterator iter; | |
267 | struct bio_vec bv; | |
268 | ||
11bf4ec5 | 269 | rq_for_each_segment(bv, rq, iter) { |
e6ab6113 | 270 | memcpy_to_bvec(&bv, buf); |
2f2fef02 CH |
271 | buf += bv.bv_len; |
272 | } | |
1794ef2b CH |
273 | } |
274 | ||
1794ef2b CH |
275 | scsi_dma_unmap(cmd); |
276 | } | |
277 | ||
1b0224b0 | 278 | static irqreturn_t aha1542_interrupt(int irq, void *dev_id) |
1da177e4 | 279 | { |
1b0224b0 | 280 | struct Scsi_Host *sh = dev_id; |
c2532f68 | 281 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
1da177e4 LT |
282 | int errstatus, mbi, mbo, mbistatus; |
283 | int number_serviced; | |
284 | unsigned long flags; | |
55b28f9f | 285 | struct scsi_cmnd *tmp_cmd; |
1da177e4 | 286 | int flag; |
e98878f7 OZ |
287 | struct mailbox *mb = aha1542->mb; |
288 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 LT |
289 | |
290 | #ifdef DEBUG | |
291 | { | |
c2532f68 | 292 | flag = inb(INTRFLAGS(sh->io_port)); |
2906b3ce | 293 | shost_printk(KERN_DEBUG, sh, "aha1542_intr_handle: "); |
1da177e4 LT |
294 | if (!(flag & ANYINTR)) |
295 | printk("no interrupt?"); | |
296 | if (flag & MBIF) | |
297 | printk("MBIF "); | |
298 | if (flag & MBOA) | |
299 | printk("MBOF "); | |
300 | if (flag & HACC) | |
301 | printk("HACC "); | |
302 | if (flag & SCRD) | |
303 | printk("SCRD "); | |
c2532f68 | 304 | printk("status %02x\n", inb(STATUS(sh->io_port))); |
8c36b054 | 305 | } |
1da177e4 LT |
306 | #endif |
307 | number_serviced = 0; | |
1da177e4 | 308 | |
1b0224b0 OZ |
309 | spin_lock_irqsave(sh->host_lock, flags); |
310 | while (1) { | |
c2532f68 | 311 | flag = inb(INTRFLAGS(sh->io_port)); |
1da177e4 | 312 | |
e4da5feb SS |
313 | /* |
314 | * Check for unusual interrupts. If any of these happen, we should | |
315 | * probably do something special, but for now just printing a message | |
316 | * is sufficient. A SCSI reset detected is something that we really | |
317 | * need to deal with in some way. | |
318 | */ | |
1da177e4 LT |
319 | if (flag & ~MBIF) { |
320 | if (flag & MBOA) | |
321 | printk("MBOF "); | |
322 | if (flag & HACC) | |
323 | printk("HACC "); | |
dfd7c991 | 324 | if (flag & SCRD) |
1da177e4 | 325 | printk("SCRD "); |
1da177e4 | 326 | } |
c2532f68 | 327 | aha1542_intr_reset(sh->io_port); |
1da177e4 | 328 | |
e98878f7 | 329 | mbi = aha1542->aha1542_last_mbi_used + 1; |
1da177e4 LT |
330 | if (mbi >= 2 * AHA1542_MAILBOXES) |
331 | mbi = AHA1542_MAILBOXES; | |
332 | ||
333 | do { | |
334 | if (mb[mbi].status != 0) | |
335 | break; | |
336 | mbi++; | |
337 | if (mbi >= 2 * AHA1542_MAILBOXES) | |
338 | mbi = AHA1542_MAILBOXES; | |
e98878f7 | 339 | } while (mbi != aha1542->aha1542_last_mbi_used); |
1da177e4 LT |
340 | |
341 | if (mb[mbi].status == 0) { | |
1b0224b0 | 342 | spin_unlock_irqrestore(sh->host_lock, flags); |
1da177e4 | 343 | /* Hmm, no mail. Must have read it the last time around */ |
dfd7c991 | 344 | if (!number_serviced) |
2906b3ce | 345 | shost_printk(KERN_WARNING, sh, "interrupt received, but no mail.\n"); |
1b0224b0 | 346 | return IRQ_HANDLED; |
8c36b054 | 347 | } |
1da177e4 | 348 | |
492ca4da | 349 | mbo = (scsi2int(mb[mbi].ccbptr) - (unsigned long)aha1542->ccb_handle) / sizeof(struct ccb); |
1da177e4 LT |
350 | mbistatus = mb[mbi].status; |
351 | mb[mbi].status = 0; | |
e98878f7 | 352 | aha1542->aha1542_last_mbi_used = mbi; |
1da177e4 LT |
353 | |
354 | #ifdef DEBUG | |
fde1fb8a OZ |
355 | if (ccb[mbo].tarstat | ccb[mbo].hastat) |
356 | shost_printk(KERN_DEBUG, sh, "aha1542_command: returning %x (status %d)\n", | |
357 | ccb[mbo].tarstat + ((int) ccb[mbo].hastat << 16), mb[mbi].status); | |
1da177e4 LT |
358 | #endif |
359 | ||
360 | if (mbistatus == 3) | |
361 | continue; /* Aborted command not found */ | |
362 | ||
363 | #ifdef DEBUG | |
2906b3ce | 364 | shost_printk(KERN_DEBUG, sh, "...done %d %d\n", mbo, mbi); |
1da177e4 LT |
365 | #endif |
366 | ||
55b28f9f | 367 | tmp_cmd = aha1542->int_cmds[mbo]; |
1da177e4 | 368 | |
13522352 | 369 | if (!tmp_cmd) { |
1b0224b0 | 370 | spin_unlock_irqrestore(sh->host_lock, flags); |
2906b3ce OZ |
371 | shost_printk(KERN_WARNING, sh, "Unexpected interrupt\n"); |
372 | shost_printk(KERN_WARNING, sh, "tarstat=%x, hastat=%x idlun=%x ccb#=%d\n", ccb[mbo].tarstat, | |
1da177e4 | 373 | ccb[mbo].hastat, ccb[mbo].idlun, mbo); |
1b0224b0 | 374 | return IRQ_HANDLED; |
1da177e4 | 375 | } |
1794ef2b | 376 | aha1542_free_cmd(tmp_cmd); |
e4da5feb SS |
377 | /* |
378 | * Fetch the sense data, and tuck it away, in the required slot. The | |
379 | * Adaptec automatically fetches it, and there is no guarantee that | |
380 | * we will still have it in the cdb when we come back | |
381 | */ | |
1da177e4 | 382 | if (ccb[mbo].tarstat == 2) |
55b28f9f | 383 | memcpy(tmp_cmd->sense_buffer, &ccb[mbo].cdb[ccb[mbo].cdblen], |
b80ca4f7 | 384 | SCSI_SENSE_BUFFERSIZE); |
1da177e4 LT |
385 | |
386 | ||
387 | /* is there mail :-) */ | |
388 | ||
389 | /* more error checking left out here */ | |
390 | if (mbistatus != 1) | |
391 | /* This is surely wrong, but I don't know what's right */ | |
392 | errstatus = makecode(ccb[mbo].hastat, ccb[mbo].tarstat); | |
393 | else | |
394 | errstatus = 0; | |
395 | ||
396 | #ifdef DEBUG | |
397 | if (errstatus) | |
2906b3ce | 398 | shost_printk(KERN_DEBUG, sh, "(aha1542 error:%x %x %x) ", errstatus, |
1da177e4 | 399 | ccb[mbo].hastat, ccb[mbo].tarstat); |
6ddc8cf4 OZ |
400 | if (ccb[mbo].tarstat == 2) |
401 | print_hex_dump_bytes("sense: ", DUMP_PREFIX_NONE, &ccb[mbo].cdb[ccb[mbo].cdblen], 12); | |
fde1fb8a OZ |
402 | if (errstatus) |
403 | printk("aha1542_intr_handle: returning %6x\n", errstatus); | |
404 | #endif | |
55b28f9f OZ |
405 | tmp_cmd->result = errstatus; |
406 | aha1542->int_cmds[mbo] = NULL; /* This effectively frees up the mailbox slot, as | |
e4da5feb SS |
407 | * far as queuecommand is concerned |
408 | */ | |
13522352 | 409 | scsi_done(tmp_cmd); |
1da177e4 | 410 | number_serviced++; |
8c36b054 | 411 | } |
1da177e4 LT |
412 | } |
413 | ||
1b0224b0 | 414 | static int aha1542_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *cmd) |
09a44833 | 415 | { |
1794ef2b | 416 | struct aha1542_cmd *acmd = scsi_cmd_priv(cmd); |
2906b3ce | 417 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
cb5b570c | 418 | u8 direction; |
55b28f9f OZ |
419 | u8 target = cmd->device->id; |
420 | u8 lun = cmd->device->lun; | |
1da177e4 | 421 | unsigned long flags; |
55b28f9f | 422 | int bufflen = scsi_bufflen(cmd); |
2f2fef02 | 423 | int mbo; |
e98878f7 OZ |
424 | struct mailbox *mb = aha1542->mb; |
425 | struct ccb *ccb = aha1542->ccb; | |
1da177e4 | 426 | |
55b28f9f | 427 | if (*cmd->cmnd == REQUEST_SENSE) { |
1da177e4 | 428 | /* Don't do the command - we have the sense data already */ |
55b28f9f | 429 | cmd->result = 0; |
13522352 | 430 | scsi_done(cmd); |
1da177e4 LT |
431 | return 0; |
432 | } | |
433 | #ifdef DEBUG | |
764a0c7e OZ |
434 | { |
435 | int i = -1; | |
436 | if (*cmd->cmnd == READ_10 || *cmd->cmnd == WRITE_10) | |
437 | i = xscsi2int(cmd->cmnd + 2); | |
438 | else if (*cmd->cmnd == READ_6 || *cmd->cmnd == WRITE_6) | |
439 | i = scsi2int(cmd->cmnd + 2); | |
440 | shost_printk(KERN_DEBUG, sh, "aha1542_queuecommand: dev %d cmd %02x pos %d len %d", | |
441 | target, *cmd->cmnd, i, bufflen); | |
442 | print_hex_dump_bytes("command: ", DUMP_PREFIX_NONE, cmd->cmnd, cmd->cmd_len); | |
443 | } | |
1da177e4 | 444 | #endif |
2f2fef02 CH |
445 | |
446 | if (cmd->sc_data_direction == DMA_TO_DEVICE) { | |
11bf4ec5 | 447 | struct request *rq = scsi_cmd_to_rq(cmd); |
2f2fef02 CH |
448 | void *buf = acmd->data_buffer; |
449 | struct req_iterator iter; | |
450 | struct bio_vec bv; | |
451 | ||
11bf4ec5 | 452 | rq_for_each_segment(bv, rq, iter) { |
e6ab6113 | 453 | memcpy_from_bvec(buf, &bv); |
2f2fef02 CH |
454 | buf += bv.bv_len; |
455 | } | |
8c08a621 OZ |
456 | } |
457 | ||
e4da5feb SS |
458 | /* |
459 | * Use the outgoing mailboxes in a round-robin fashion, because this | |
460 | * is how the host adapter will scan for them | |
461 | */ | |
1da177e4 | 462 | |
1b0224b0 | 463 | spin_lock_irqsave(sh->host_lock, flags); |
e98878f7 | 464 | mbo = aha1542->aha1542_last_mbo_used + 1; |
1da177e4 LT |
465 | if (mbo >= AHA1542_MAILBOXES) |
466 | mbo = 0; | |
467 | ||
468 | do { | |
55b28f9f | 469 | if (mb[mbo].status == 0 && aha1542->int_cmds[mbo] == NULL) |
1da177e4 LT |
470 | break; |
471 | mbo++; | |
472 | if (mbo >= AHA1542_MAILBOXES) | |
473 | mbo = 0; | |
e98878f7 | 474 | } while (mbo != aha1542->aha1542_last_mbo_used); |
1da177e4 | 475 | |
55b28f9f | 476 | if (mb[mbo].status || aha1542->int_cmds[mbo]) |
1da177e4 LT |
477 | panic("Unable to find empty mailbox for aha1542.\n"); |
478 | ||
55b28f9f | 479 | aha1542->int_cmds[mbo] = cmd; /* This will effectively prevent someone else from |
e4da5feb SS |
480 | * screwing with this cdb. |
481 | */ | |
1da177e4 | 482 | |
e98878f7 | 483 | aha1542->aha1542_last_mbo_used = mbo; |
1da177e4 LT |
484 | |
485 | #ifdef DEBUG | |
13522352 | 486 | shost_printk(KERN_DEBUG, sh, "Sending command (%d)...", mbo); |
1da177e4 LT |
487 | #endif |
488 | ||
1794ef2b CH |
489 | /* This gets trashed for some reason */ |
490 | any2scsi(mb[mbo].ccbptr, aha1542->ccb_handle + mbo * sizeof(*ccb)); | |
1da177e4 LT |
491 | |
492 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
493 | ||
55b28f9f | 494 | ccb[mbo].cdblen = cmd->cmd_len; |
1da177e4 LT |
495 | |
496 | direction = 0; | |
55b28f9f | 497 | if (*cmd->cmnd == READ_10 || *cmd->cmnd == READ_6) |
1da177e4 | 498 | direction = 8; |
55b28f9f | 499 | else if (*cmd->cmnd == WRITE_10 || *cmd->cmnd == WRITE_6) |
1da177e4 LT |
500 | direction = 16; |
501 | ||
55b28f9f | 502 | memcpy(ccb[mbo].cdb, cmd->cmnd, ccb[mbo].cdblen); |
2f2fef02 CH |
503 | ccb[mbo].op = 0; /* SCSI Initiator Command */ |
504 | any2scsi(ccb[mbo].datalen, bufflen); | |
505 | if (bufflen) | |
506 | any2scsi(ccb[mbo].dataptr, acmd->data_buffer_handle); | |
507 | else | |
fc3fdfcc | 508 | any2scsi(ccb[mbo].dataptr, 0); |
1da177e4 LT |
509 | ccb[mbo].idlun = (target & 7) << 5 | direction | (lun & 7); /*SCSI Target Id */ |
510 | ccb[mbo].rsalen = 16; | |
511 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
512 | ccb[mbo].commlinkid = 0; | |
513 | ||
514 | #ifdef DEBUG | |
6ddc8cf4 | 515 | print_hex_dump_bytes("sending: ", DUMP_PREFIX_NONE, &ccb[mbo], sizeof(ccb[mbo]) - 10); |
1b0224b0 | 516 | printk("aha1542_queuecommand: now waiting for interrupt "); |
1da177e4 | 517 | #endif |
1b0224b0 OZ |
518 | mb[mbo].status = 1; |
519 | aha1542_outb(cmd->device->host->io_port, CMD_START_SCSI); | |
520 | spin_unlock_irqrestore(sh->host_lock, flags); | |
1da177e4 LT |
521 | |
522 | return 0; | |
523 | } | |
524 | ||
525 | /* Initialize mailboxes */ | |
68ea9de3 | 526 | static void setup_mailboxes(struct Scsi_Host *sh) |
1da177e4 | 527 | { |
c2532f68 | 528 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
cad2fc72 | 529 | u8 mb_cmd[5] = { CMD_MBINIT, AHA1542_MAILBOXES, 0, 0, 0}; |
1794ef2b | 530 | int i; |
1da177e4 | 531 | |
1da177e4 | 532 | for (i = 0; i < AHA1542_MAILBOXES; i++) { |
1794ef2b CH |
533 | aha1542->mb[i].status = 0; |
534 | any2scsi(aha1542->mb[i].ccbptr, | |
535 | aha1542->ccb_handle + i * sizeof(struct ccb)); | |
536 | aha1542->mb[AHA1542_MAILBOXES + i].status = 0; | |
8c36b054 | 537 | } |
68ea9de3 | 538 | aha1542_intr_reset(sh->io_port); /* reset interrupts, so they don't block */ |
1794ef2b | 539 | any2scsi(mb_cmd + 2, aha1542->mb_handle); |
68ea9de3 | 540 | if (aha1542_out(sh->io_port, mb_cmd, 5)) |
2906b3ce | 541 | shost_printk(KERN_ERR, sh, "failed setting up mailboxes\n"); |
68ea9de3 | 542 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
543 | } |
544 | ||
68ea9de3 | 545 | static int aha1542_getconfig(struct Scsi_Host *sh) |
1da177e4 | 546 | { |
cb5b570c | 547 | u8 inquiry_result[3]; |
1da177e4 | 548 | int i; |
68ea9de3 | 549 | i = inb(STATUS(sh->io_port)); |
1da177e4 | 550 | if (i & DF) { |
68ea9de3 | 551 | i = inb(DATA(sh->io_port)); |
8c36b054 | 552 | } |
68ea9de3 OZ |
553 | aha1542_outb(sh->io_port, CMD_RETCONF); |
554 | aha1542_in(sh->io_port, inquiry_result, 3, 0); | |
555 | if (!wait_mask(INTRFLAGS(sh->io_port), INTRMASK, HACC, 0, 0)) | |
2906b3ce | 556 | shost_printk(KERN_ERR, sh, "error querying board settings\n"); |
68ea9de3 | 557 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
558 | switch (inquiry_result[0]) { |
559 | case 0x80: | |
68ea9de3 | 560 | sh->dma_channel = 7; |
1da177e4 LT |
561 | break; |
562 | case 0x40: | |
68ea9de3 | 563 | sh->dma_channel = 6; |
1da177e4 LT |
564 | break; |
565 | case 0x20: | |
68ea9de3 | 566 | sh->dma_channel = 5; |
1da177e4 LT |
567 | break; |
568 | case 0x01: | |
68ea9de3 | 569 | sh->dma_channel = 0; |
1da177e4 LT |
570 | break; |
571 | case 0: | |
e4da5feb SS |
572 | /* |
573 | * This means that the adapter, although Adaptec 1542 compatible, doesn't use a DMA channel. | |
574 | * Currently only aware of the BusLogic BT-445S VL-Bus adapter which needs this. | |
575 | */ | |
68ea9de3 | 576 | sh->dma_channel = 0xFF; |
1da177e4 LT |
577 | break; |
578 | default: | |
2906b3ce | 579 | shost_printk(KERN_ERR, sh, "Unable to determine DMA channel.\n"); |
1da177e4 | 580 | return -1; |
8c36b054 | 581 | } |
1da177e4 LT |
582 | switch (inquiry_result[1]) { |
583 | case 0x40: | |
68ea9de3 | 584 | sh->irq = 15; |
1da177e4 LT |
585 | break; |
586 | case 0x20: | |
68ea9de3 | 587 | sh->irq = 14; |
1da177e4 LT |
588 | break; |
589 | case 0x8: | |
68ea9de3 | 590 | sh->irq = 12; |
1da177e4 LT |
591 | break; |
592 | case 0x4: | |
68ea9de3 | 593 | sh->irq = 11; |
1da177e4 LT |
594 | break; |
595 | case 0x2: | |
68ea9de3 | 596 | sh->irq = 10; |
1da177e4 LT |
597 | break; |
598 | case 0x1: | |
68ea9de3 | 599 | sh->irq = 9; |
1da177e4 LT |
600 | break; |
601 | default: | |
2906b3ce | 602 | shost_printk(KERN_ERR, sh, "Unable to determine IRQ level.\n"); |
1da177e4 | 603 | return -1; |
8c36b054 | 604 | } |
68ea9de3 | 605 | sh->this_id = inquiry_result[2] & 7; |
1da177e4 LT |
606 | return 0; |
607 | } | |
608 | ||
e4da5feb SS |
609 | /* |
610 | * This function should only be called for 1542C boards - we can detect | |
611 | * the special firmware settings and unlock the board | |
612 | */ | |
1da177e4 | 613 | |
68ea9de3 | 614 | static int aha1542_mbenable(struct Scsi_Host *sh) |
1da177e4 | 615 | { |
cb5b570c OZ |
616 | static u8 mbenable_cmd[3]; |
617 | static u8 mbenable_result[2]; | |
1da177e4 LT |
618 | int retval; |
619 | ||
620 | retval = BIOS_TRANSLATION_6432; | |
621 | ||
68ea9de3 OZ |
622 | aha1542_outb(sh->io_port, CMD_EXTBIOS); |
623 | if (aha1542_in(sh->io_port, mbenable_result, 2, 100)) | |
1da177e4 | 624 | return retval; |
68ea9de3 | 625 | if (!wait_mask(INTRFLAGS(sh->io_port), INTRMASK, HACC, 0, 100)) |
2093bfa1 | 626 | goto fail; |
68ea9de3 | 627 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
628 | |
629 | if ((mbenable_result[0] & 0x08) || mbenable_result[1]) { | |
630 | mbenable_cmd[0] = CMD_MBENABLE; | |
631 | mbenable_cmd[1] = 0; | |
632 | mbenable_cmd[2] = mbenable_result[1]; | |
633 | ||
634 | if ((mbenable_result[0] & 0x08) && (mbenable_result[1] & 0x03)) | |
635 | retval = BIOS_TRANSLATION_25563; | |
636 | ||
68ea9de3 | 637 | if (aha1542_out(sh->io_port, mbenable_cmd, 3)) |
2093bfa1 | 638 | goto fail; |
8c36b054 | 639 | } |
1da177e4 LT |
640 | while (0) { |
641 | fail: | |
2906b3ce | 642 | shost_printk(KERN_ERR, sh, "Mailbox init failed\n"); |
1da177e4 | 643 | } |
68ea9de3 | 644 | aha1542_intr_reset(sh->io_port); |
1da177e4 LT |
645 | return retval; |
646 | } | |
647 | ||
648 | /* Query the board to find out if it is a 1542 or a 1740, or whatever. */ | |
68ea9de3 | 649 | static int aha1542_query(struct Scsi_Host *sh) |
1da177e4 | 650 | { |
68ea9de3 | 651 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
cb5b570c | 652 | u8 inquiry_result[4]; |
1da177e4 | 653 | int i; |
68ea9de3 | 654 | i = inb(STATUS(sh->io_port)); |
1da177e4 | 655 | if (i & DF) { |
68ea9de3 | 656 | i = inb(DATA(sh->io_port)); |
8c36b054 | 657 | } |
68ea9de3 OZ |
658 | aha1542_outb(sh->io_port, CMD_INQUIRY); |
659 | aha1542_in(sh->io_port, inquiry_result, 4, 0); | |
660 | if (!wait_mask(INTRFLAGS(sh->io_port), INTRMASK, HACC, 0, 0)) | |
2906b3ce | 661 | shost_printk(KERN_ERR, sh, "error querying card type\n"); |
68ea9de3 | 662 | aha1542_intr_reset(sh->io_port); |
1da177e4 | 663 | |
68ea9de3 | 664 | aha1542->bios_translation = BIOS_TRANSLATION_6432; /* Default case */ |
1da177e4 | 665 | |
e4da5feb SS |
666 | /* |
667 | * For an AHA1740 series board, we ignore the board since there is a | |
668 | * hardware bug which can lead to wrong blocks being returned if the board | |
669 | * is operating in the 1542 emulation mode. Since there is an extended mode | |
670 | * driver, we simply ignore the board and let the 1740 driver pick it up. | |
1da177e4 LT |
671 | */ |
672 | ||
673 | if (inquiry_result[0] == 0x43) { | |
2906b3ce | 674 | shost_printk(KERN_INFO, sh, "Emulation mode not supported for AHA-1740 hardware, use aha1740 driver instead.\n"); |
1da177e4 | 675 | return 1; |
8c36b054 | 676 | } |
1da177e4 | 677 | |
e4da5feb SS |
678 | /* |
679 | * Always call this - boards that do not support extended bios translation | |
680 | * will ignore the command, and we will set the proper default | |
681 | */ | |
1da177e4 | 682 | |
68ea9de3 | 683 | aha1542->bios_translation = aha1542_mbenable(sh); |
1da177e4 LT |
684 | |
685 | return 0; | |
686 | } | |
687 | ||
f71429ab | 688 | static u8 dma_speed_hw(int dma_speed) |
1da177e4 | 689 | { |
f71429ab OZ |
690 | switch (dma_speed) { |
691 | case 5: | |
692 | return 0x00; | |
693 | case 6: | |
694 | return 0x04; | |
695 | case 7: | |
696 | return 0x01; | |
697 | case 8: | |
698 | return 0x02; | |
699 | case 10: | |
700 | return 0x03; | |
1da177e4 | 701 | } |
1da177e4 | 702 | |
f71429ab | 703 | return 0xff; /* invalid */ |
1da177e4 LT |
704 | } |
705 | ||
f71429ab | 706 | /* Set the Bus on/off-times as not to ruin floppy performance */ |
37d607bd | 707 | static void aha1542_set_bus_times(struct Scsi_Host *sh, int bus_on, int bus_off, int dma_speed) |
1da177e4 | 708 | { |
37d607bd OZ |
709 | if (bus_on > 0) { |
710 | u8 oncmd[] = { CMD_BUSON_TIME, clamp(bus_on, 2, 15) }; | |
1da177e4 | 711 | |
37d607bd OZ |
712 | aha1542_intr_reset(sh->io_port); |
713 | if (aha1542_out(sh->io_port, oncmd, 2)) | |
f71429ab OZ |
714 | goto fail; |
715 | } | |
1da177e4 | 716 | |
37d607bd OZ |
717 | if (bus_off > 0) { |
718 | u8 offcmd[] = { CMD_BUSOFF_TIME, clamp(bus_off, 1, 64) }; | |
1da177e4 | 719 | |
37d607bd OZ |
720 | aha1542_intr_reset(sh->io_port); |
721 | if (aha1542_out(sh->io_port, offcmd, 2)) | |
f71429ab OZ |
722 | goto fail; |
723 | } | |
1da177e4 | 724 | |
37d607bd OZ |
725 | if (dma_speed_hw(dma_speed) != 0xff) { |
726 | u8 dmacmd[] = { CMD_DMASPEED, dma_speed_hw(dma_speed) }; | |
b847fd0d | 727 | |
37d607bd OZ |
728 | aha1542_intr_reset(sh->io_port); |
729 | if (aha1542_out(sh->io_port, dmacmd, 2)) | |
b847fd0d OZ |
730 | goto fail; |
731 | } | |
37d607bd | 732 | aha1542_intr_reset(sh->io_port); |
b847fd0d OZ |
733 | return; |
734 | fail: | |
2906b3ce | 735 | shost_printk(KERN_ERR, sh, "setting bus on/off-time failed\n"); |
37d607bd | 736 | aha1542_intr_reset(sh->io_port); |
b847fd0d OZ |
737 | } |
738 | ||
1da177e4 | 739 | /* return non-zero on detection */ |
77168bd7 BVA |
740 | static struct Scsi_Host *aha1542_hw_init(const struct scsi_host_template *tpnt, |
741 | struct device *pdev, int indx) | |
1da177e4 | 742 | { |
f71429ab | 743 | unsigned int base_io = io[indx]; |
c2532f68 | 744 | struct Scsi_Host *sh; |
e98878f7 | 745 | struct aha1542_hostdata *aha1542; |
2906b3ce | 746 | char dma_info[] = "no DMA"; |
1da177e4 | 747 | |
3a70c006 OZ |
748 | if (base_io == 0) |
749 | return NULL; | |
1da177e4 | 750 | |
3a70c006 OZ |
751 | if (!request_region(base_io, AHA1542_REGION_SIZE, "aha1542")) |
752 | return NULL; | |
1da177e4 | 753 | |
c2532f68 OZ |
754 | sh = scsi_host_alloc(tpnt, sizeof(struct aha1542_hostdata)); |
755 | if (!sh) | |
3a70c006 | 756 | goto release; |
c2532f68 | 757 | aha1542 = shost_priv(sh); |
b847fd0d | 758 | |
68ea9de3 OZ |
759 | sh->unique_id = base_io; |
760 | sh->io_port = base_io; | |
761 | sh->n_io_port = AHA1542_REGION_SIZE; | |
762 | aha1542->aha1542_last_mbi_used = 2 * AHA1542_MAILBOXES - 1; | |
763 | aha1542->aha1542_last_mbo_used = AHA1542_MAILBOXES - 1; | |
764 | ||
765 | if (!aha1542_test_port(sh)) | |
3a70c006 | 766 | goto unregister; |
1da177e4 | 767 | |
37d607bd | 768 | aha1542_set_bus_times(sh, bus_on[indx], bus_off[indx], dma_speed[indx]); |
68ea9de3 | 769 | if (aha1542_query(sh)) |
3a70c006 | 770 | goto unregister; |
68ea9de3 | 771 | if (aha1542_getconfig(sh) == -1) |
3a70c006 | 772 | goto unregister; |
1da177e4 | 773 | |
c2532f68 | 774 | if (sh->dma_channel != 0xFF) |
2906b3ce OZ |
775 | snprintf(dma_info, sizeof(dma_info), "DMA %d", sh->dma_channel); |
776 | shost_printk(KERN_INFO, sh, "Adaptec AHA-1542 (SCSI-ID %d) at IO 0x%x, IRQ %d, %s\n", | |
777 | sh->this_id, base_io, sh->irq, dma_info); | |
3a70c006 | 778 | if (aha1542->bios_translation == BIOS_TRANSLATION_25563) |
2906b3ce | 779 | shost_printk(KERN_INFO, sh, "Using extended bios translation\n"); |
1da177e4 | 780 | |
1794ef2b CH |
781 | if (dma_set_mask_and_coherent(pdev, DMA_BIT_MASK(24)) < 0) |
782 | goto unregister; | |
783 | ||
784 | aha1542->mb = dma_alloc_coherent(pdev, | |
785 | AHA1542_MAILBOXES * 2 * sizeof(struct mailbox), | |
786 | &aha1542->mb_handle, GFP_KERNEL); | |
787 | if (!aha1542->mb) | |
788 | goto unregister; | |
789 | ||
790 | aha1542->ccb = dma_alloc_coherent(pdev, | |
791 | AHA1542_MAILBOXES * sizeof(struct ccb), | |
792 | &aha1542->ccb_handle, GFP_KERNEL); | |
793 | if (!aha1542->ccb) | |
794 | goto free_mb; | |
795 | ||
68ea9de3 | 796 | setup_mailboxes(sh); |
1da177e4 | 797 | |
1b0224b0 | 798 | if (request_irq(sh->irq, aha1542_interrupt, 0, "aha1542", sh)) { |
2906b3ce | 799 | shost_printk(KERN_ERR, sh, "Unable to allocate IRQ.\n"); |
1794ef2b | 800 | goto free_ccb; |
3a70c006 | 801 | } |
c2532f68 OZ |
802 | if (sh->dma_channel != 0xFF) { |
803 | if (request_dma(sh->dma_channel, "aha1542")) { | |
2906b3ce | 804 | shost_printk(KERN_ERR, sh, "Unable to allocate DMA channel.\n"); |
3a70c006 OZ |
805 | goto free_irq; |
806 | } | |
c2532f68 OZ |
807 | if (sh->dma_channel == 0 || sh->dma_channel >= 5) { |
808 | set_dma_mode(sh->dma_channel, DMA_MODE_CASCADE); | |
809 | enable_dma(sh->dma_channel); | |
3a70c006 OZ |
810 | } |
811 | } | |
1da177e4 | 812 | |
c2532f68 | 813 | if (scsi_add_host(sh, pdev)) |
3a70c006 | 814 | goto free_dma; |
1da177e4 | 815 | |
c2532f68 | 816 | scsi_scan_host(sh); |
1da177e4 | 817 | |
c2532f68 | 818 | return sh; |
1794ef2b | 819 | |
3a70c006 | 820 | free_dma: |
c2532f68 OZ |
821 | if (sh->dma_channel != 0xff) |
822 | free_dma(sh->dma_channel); | |
3a70c006 | 823 | free_irq: |
c2532f68 | 824 | free_irq(sh->irq, sh); |
1794ef2b CH |
825 | free_ccb: |
826 | dma_free_coherent(pdev, AHA1542_MAILBOXES * sizeof(struct ccb), | |
827 | aha1542->ccb, aha1542->ccb_handle); | |
828 | free_mb: | |
829 | dma_free_coherent(pdev, AHA1542_MAILBOXES * 2 * sizeof(struct mailbox), | |
830 | aha1542->mb, aha1542->mb_handle); | |
3a70c006 | 831 | unregister: |
c2532f68 | 832 | scsi_host_put(sh); |
3a70c006 OZ |
833 | release: |
834 | release_region(base_io, AHA1542_REGION_SIZE); | |
1da177e4 | 835 | |
643a7c43 | 836 | return NULL; |
1da177e4 LT |
837 | } |
838 | ||
c2532f68 | 839 | static int aha1542_release(struct Scsi_Host *sh) |
1da177e4 | 840 | { |
1794ef2b CH |
841 | struct aha1542_hostdata *aha1542 = shost_priv(sh); |
842 | struct device *dev = sh->dma_dev; | |
843 | ||
c2532f68 OZ |
844 | scsi_remove_host(sh); |
845 | if (sh->dma_channel != 0xff) | |
846 | free_dma(sh->dma_channel); | |
1794ef2b CH |
847 | dma_free_coherent(dev, AHA1542_MAILBOXES * sizeof(struct ccb), |
848 | aha1542->ccb, aha1542->ccb_handle); | |
849 | dma_free_coherent(dev, AHA1542_MAILBOXES * 2 * sizeof(struct mailbox), | |
850 | aha1542->mb, aha1542->mb_handle); | |
c2532f68 OZ |
851 | if (sh->irq) |
852 | free_irq(sh->irq, sh); | |
853 | if (sh->io_port && sh->n_io_port) | |
854 | release_region(sh->io_port, sh->n_io_port); | |
855 | scsi_host_put(sh); | |
1da177e4 LT |
856 | return 0; |
857 | } | |
858 | ||
1da177e4 | 859 | |
1da177e4 LT |
860 | /* |
861 | * This is a device reset. This is handled by sending a special command | |
862 | * to the device. | |
863 | */ | |
55b28f9f | 864 | static int aha1542_dev_reset(struct scsi_cmnd *cmd) |
1da177e4 | 865 | { |
1b0224b0 OZ |
866 | struct Scsi_Host *sh = cmd->device->host; |
867 | struct aha1542_hostdata *aha1542 = shost_priv(sh); | |
1da177e4 | 868 | unsigned long flags; |
e98878f7 | 869 | struct mailbox *mb = aha1542->mb; |
55b28f9f OZ |
870 | u8 target = cmd->device->id; |
871 | u8 lun = cmd->device->lun; | |
1da177e4 | 872 | int mbo; |
e98878f7 | 873 | struct ccb *ccb = aha1542->ccb; |
1da177e4 | 874 | |
1b0224b0 | 875 | spin_lock_irqsave(sh->host_lock, flags); |
e98878f7 | 876 | mbo = aha1542->aha1542_last_mbo_used + 1; |
1da177e4 LT |
877 | if (mbo >= AHA1542_MAILBOXES) |
878 | mbo = 0; | |
879 | ||
880 | do { | |
55b28f9f | 881 | if (mb[mbo].status == 0 && aha1542->int_cmds[mbo] == NULL) |
1da177e4 LT |
882 | break; |
883 | mbo++; | |
884 | if (mbo >= AHA1542_MAILBOXES) | |
885 | mbo = 0; | |
e98878f7 | 886 | } while (mbo != aha1542->aha1542_last_mbo_used); |
1da177e4 | 887 | |
55b28f9f | 888 | if (mb[mbo].status || aha1542->int_cmds[mbo]) |
1da177e4 LT |
889 | panic("Unable to find empty mailbox for aha1542.\n"); |
890 | ||
55b28f9f | 891 | aha1542->int_cmds[mbo] = cmd; /* This will effectively |
e4da5feb SS |
892 | * prevent someone else from |
893 | * screwing with this cdb. | |
894 | */ | |
1da177e4 | 895 | |
e98878f7 | 896 | aha1542->aha1542_last_mbo_used = mbo; |
1da177e4 | 897 | |
1794ef2b CH |
898 | /* This gets trashed for some reason */ |
899 | any2scsi(mb[mbo].ccbptr, aha1542->ccb_handle + mbo * sizeof(*ccb)); | |
1da177e4 LT |
900 | |
901 | memset(&ccb[mbo], 0, sizeof(struct ccb)); | |
902 | ||
903 | ccb[mbo].op = 0x81; /* BUS DEVICE RESET */ | |
904 | ||
905 | ccb[mbo].idlun = (target & 7) << 5 | (lun & 7); /*SCSI Target Id */ | |
906 | ||
907 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; | |
908 | ccb[mbo].commlinkid = 0; | |
909 | ||
6075416c SS |
910 | /* |
911 | * Now tell the 1542 to flush all pending commands for this | |
912 | * target | |
1da177e4 | 913 | */ |
1b0224b0 OZ |
914 | aha1542_outb(sh->io_port, CMD_START_SCSI); |
915 | spin_unlock_irqrestore(sh->host_lock, flags); | |
1da177e4 | 916 | |
55b28f9f | 917 | scmd_printk(KERN_WARNING, cmd, |
017560fc | 918 | "Trying device reset for target\n"); |
1da177e4 LT |
919 | |
920 | return SUCCESS; | |
1da177e4 LT |
921 | } |
922 | ||
55b28f9f | 923 | static int aha1542_reset(struct scsi_cmnd *cmd, u8 reset_cmd) |
1da177e4 | 924 | { |
1b0224b0 OZ |
925 | struct Scsi_Host *sh = cmd->device->host; |
926 | struct aha1542_hostdata *aha1542 = shost_priv(sh); | |
927 | unsigned long flags; | |
1da177e4 LT |
928 | int i; |
929 | ||
1b0224b0 | 930 | spin_lock_irqsave(sh->host_lock, flags); |
6075416c | 931 | /* |
1da177e4 LT |
932 | * This does a scsi reset for all devices on the bus. |
933 | * In principle, we could also reset the 1542 - should | |
934 | * we do this? Try this first, and we can add that later | |
935 | * if it turns out to be useful. | |
936 | */ | |
55b28f9f | 937 | outb(reset_cmd, CONTROL(cmd->device->host->io_port)); |
1da177e4 | 938 | |
55b28f9f | 939 | if (!wait_mask(STATUS(cmd->device->host->io_port), |
7061dec4 | 940 | STATMASK, IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0)) { |
1b0224b0 | 941 | spin_unlock_irqrestore(sh->host_lock, flags); |
a13b3722 OZ |
942 | return FAILED; |
943 | } | |
1b0224b0 | 944 | |
8537cba8 OZ |
945 | /* |
946 | * We need to do this too before the 1542 can interact with | |
947 | * us again after host reset. | |
948 | */ | |
949 | if (reset_cmd & HRST) | |
68ea9de3 | 950 | setup_mailboxes(cmd->device->host); |
1b0224b0 | 951 | |
1da177e4 LT |
952 | /* |
953 | * Now try to pick up the pieces. For all pending commands, | |
954 | * free any internal data structures, and basically clear things | |
6075416c | 955 | * out. We do not try and restart any commands or anything - |
1da177e4 LT |
956 | * the strategy handler takes care of that crap. |
957 | */ | |
2906b3ce | 958 | shost_printk(KERN_WARNING, cmd->device->host, "Sent BUS RESET to scsi host %d\n", cmd->device->host->host_no); |
1da177e4 LT |
959 | |
960 | for (i = 0; i < AHA1542_MAILBOXES; i++) { | |
55b28f9f OZ |
961 | if (aha1542->int_cmds[i] != NULL) { |
962 | struct scsi_cmnd *tmp_cmd; | |
963 | tmp_cmd = aha1542->int_cmds[i]; | |
1da177e4 | 964 | |
55b28f9f | 965 | if (tmp_cmd->device->soft_reset) { |
1da177e4 LT |
966 | /* |
967 | * If this device implements the soft reset option, | |
968 | * then it is still holding onto the command, and | |
969 | * may yet complete it. In this case, we don't | |
970 | * flush the data. | |
971 | */ | |
972 | continue; | |
973 | } | |
1794ef2b | 974 | aha1542_free_cmd(tmp_cmd); |
55b28f9f | 975 | aha1542->int_cmds[i] = NULL; |
e98878f7 | 976 | aha1542->mb[i].status = 0; |
1da177e4 LT |
977 | } |
978 | } | |
979 | ||
1b0224b0 | 980 | spin_unlock_irqrestore(sh->host_lock, flags); |
1da177e4 | 981 | return SUCCESS; |
1da177e4 LT |
982 | } |
983 | ||
55b28f9f | 984 | static int aha1542_bus_reset(struct scsi_cmnd *cmd) |
1da177e4 | 985 | { |
55b28f9f | 986 | return aha1542_reset(cmd, SCRST); |
8537cba8 | 987 | } |
1da177e4 | 988 | |
55b28f9f | 989 | static int aha1542_host_reset(struct scsi_cmnd *cmd) |
8537cba8 | 990 | { |
55b28f9f | 991 | return aha1542_reset(cmd, HRST | SCRST); |
1da177e4 LT |
992 | } |
993 | ||
1da177e4 | 994 | static int aha1542_biosparam(struct scsi_device *sdev, |
17787a09 | 995 | struct block_device *bdev, sector_t capacity, int geom[]) |
1da177e4 | 996 | { |
e98878f7 | 997 | struct aha1542_hostdata *aha1542 = shost_priv(sdev->host); |
1da177e4 | 998 | |
17787a09 OZ |
999 | if (capacity >= 0x200000 && |
1000 | aha1542->bios_translation == BIOS_TRANSLATION_25563) { | |
1da177e4 | 1001 | /* Please verify that this is the same as what DOS returns */ |
17787a09 OZ |
1002 | geom[0] = 255; /* heads */ |
1003 | geom[1] = 63; /* sectors */ | |
1da177e4 | 1004 | } else { |
17787a09 OZ |
1005 | geom[0] = 64; /* heads */ |
1006 | geom[1] = 32; /* sectors */ | |
1da177e4 | 1007 | } |
17787a09 | 1008 | geom[2] = sector_div(capacity, geom[0] * geom[1]); /* cylinders */ |
1da177e4 LT |
1009 | |
1010 | return 0; | |
1011 | } | |
1012 | MODULE_LICENSE("GPL"); | |
1013 | ||
2f2fef02 CH |
1014 | static int aha1542_init_cmd_priv(struct Scsi_Host *shost, struct scsi_cmnd *cmd) |
1015 | { | |
1016 | struct aha1542_cmd *acmd = scsi_cmd_priv(cmd); | |
1017 | ||
1018 | acmd->data_buffer = dma_alloc_coherent(shost->dma_dev, | |
1019 | SECTOR_SIZE * AHA1542_MAX_SECTORS, | |
1020 | &acmd->data_buffer_handle, GFP_KERNEL); | |
1021 | if (!acmd->data_buffer) | |
1022 | return -ENOMEM; | |
1023 | return 0; | |
1024 | } | |
1025 | ||
1026 | static int aha1542_exit_cmd_priv(struct Scsi_Host *shost, struct scsi_cmnd *cmd) | |
1027 | { | |
1028 | struct aha1542_cmd *acmd = scsi_cmd_priv(cmd); | |
1029 | ||
1030 | dma_free_coherent(shost->dma_dev, SECTOR_SIZE * AHA1542_MAX_SECTORS, | |
1031 | acmd->data_buffer, acmd->data_buffer_handle); | |
1032 | return 0; | |
1033 | } | |
1034 | ||
77168bd7 | 1035 | static const struct scsi_host_template driver_template = { |
643a7c43 | 1036 | .module = THIS_MODULE, |
1da177e4 LT |
1037 | .proc_name = "aha1542", |
1038 | .name = "Adaptec 1542", | |
1794ef2b | 1039 | .cmd_size = sizeof(struct aha1542_cmd), |
1da177e4 | 1040 | .queuecommand = aha1542_queuecommand, |
1da177e4 LT |
1041 | .eh_device_reset_handler= aha1542_dev_reset, |
1042 | .eh_bus_reset_handler = aha1542_bus_reset, | |
1043 | .eh_host_reset_handler = aha1542_host_reset, | |
1044 | .bios_param = aha1542_biosparam, | |
2f2fef02 CH |
1045 | .init_cmd_priv = aha1542_init_cmd_priv, |
1046 | .exit_cmd_priv = aha1542_exit_cmd_priv, | |
6075416c | 1047 | .can_queue = AHA1542_MAILBOXES, |
1da177e4 | 1048 | .this_id = 7, |
2f2fef02 CH |
1049 | .max_sectors = AHA1542_MAX_SECTORS, |
1050 | .sg_tablesize = SG_ALL, | |
1da177e4 | 1051 | }; |
643a7c43 OZ |
1052 | |
1053 | static int aha1542_isa_match(struct device *pdev, unsigned int ndev) | |
1054 | { | |
1055 | struct Scsi_Host *sh = aha1542_hw_init(&driver_template, pdev, ndev); | |
1056 | ||
1057 | if (!sh) | |
1058 | return 0; | |
1059 | ||
1060 | dev_set_drvdata(pdev, sh); | |
1061 | return 1; | |
1062 | } | |
1063 | ||
30e88d01 | 1064 | static void aha1542_isa_remove(struct device *pdev, |
643a7c43 OZ |
1065 | unsigned int ndev) |
1066 | { | |
1067 | aha1542_release(dev_get_drvdata(pdev)); | |
1068 | dev_set_drvdata(pdev, NULL); | |
643a7c43 OZ |
1069 | } |
1070 | ||
1071 | static struct isa_driver aha1542_isa_driver = { | |
1072 | .match = aha1542_isa_match, | |
1073 | .remove = aha1542_isa_remove, | |
1074 | .driver = { | |
1075 | .name = "aha1542" | |
1076 | }, | |
1077 | }; | |
1078 | static int isa_registered; | |
1079 | ||
1080 | #ifdef CONFIG_PNP | |
78453a31 | 1081 | static const struct pnp_device_id aha1542_pnp_ids[] = { |
643a7c43 OZ |
1082 | { .id = "ADP1542" }, |
1083 | { .id = "" } | |
1084 | }; | |
1085 | MODULE_DEVICE_TABLE(pnp, aha1542_pnp_ids); | |
1086 | ||
1087 | static int aha1542_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *id) | |
1088 | { | |
1089 | int indx; | |
1090 | struct Scsi_Host *sh; | |
1091 | ||
f71429ab OZ |
1092 | for (indx = 0; indx < ARRAY_SIZE(io); indx++) { |
1093 | if (io[indx]) | |
643a7c43 OZ |
1094 | continue; |
1095 | ||
1096 | if (pnp_activate_dev(pdev) < 0) | |
1097 | continue; | |
1098 | ||
f71429ab | 1099 | io[indx] = pnp_port_start(pdev, 0); |
643a7c43 | 1100 | |
e4da5feb SS |
1101 | /* |
1102 | * The card can be queried for its DMA, we have | |
1103 | * the DMA set up that is enough | |
1104 | */ | |
643a7c43 | 1105 | |
2906b3ce | 1106 | dev_info(&pdev->dev, "ISAPnP found an AHA1535 at I/O 0x%03X", io[indx]); |
643a7c43 OZ |
1107 | } |
1108 | ||
1109 | sh = aha1542_hw_init(&driver_template, &pdev->dev, indx); | |
1110 | if (!sh) | |
1111 | return -ENODEV; | |
1112 | ||
1113 | pnp_set_drvdata(pdev, sh); | |
1114 | return 0; | |
1115 | } | |
1116 | ||
1117 | static void aha1542_pnp_remove(struct pnp_dev *pdev) | |
1118 | { | |
1119 | aha1542_release(pnp_get_drvdata(pdev)); | |
1120 | pnp_set_drvdata(pdev, NULL); | |
1121 | } | |
1122 | ||
1123 | static struct pnp_driver aha1542_pnp_driver = { | |
1124 | .name = "aha1542", | |
1125 | .id_table = aha1542_pnp_ids, | |
1126 | .probe = aha1542_pnp_probe, | |
1127 | .remove = aha1542_pnp_remove, | |
1128 | }; | |
1129 | static int pnp_registered; | |
1130 | #endif /* CONFIG_PNP */ | |
1131 | ||
1132 | static int __init aha1542_init(void) | |
1133 | { | |
1134 | int ret = 0; | |
643a7c43 OZ |
1135 | |
1136 | #ifdef CONFIG_PNP | |
1137 | if (isapnp) { | |
1138 | ret = pnp_register_driver(&aha1542_pnp_driver); | |
1139 | if (!ret) | |
1140 | pnp_registered = 1; | |
1141 | } | |
1142 | #endif | |
1143 | ret = isa_register_driver(&aha1542_isa_driver, MAXBOARDS); | |
1144 | if (!ret) | |
1145 | isa_registered = 1; | |
1146 | ||
1147 | #ifdef CONFIG_PNP | |
1148 | if (pnp_registered) | |
1149 | ret = 0; | |
1150 | #endif | |
1151 | if (isa_registered) | |
1152 | ret = 0; | |
1153 | ||
1154 | return ret; | |
1155 | } | |
1156 | ||
1157 | static void __exit aha1542_exit(void) | |
1158 | { | |
1159 | #ifdef CONFIG_PNP | |
1160 | if (pnp_registered) | |
1161 | pnp_unregister_driver(&aha1542_pnp_driver); | |
1162 | #endif | |
1163 | if (isa_registered) | |
1164 | isa_unregister_driver(&aha1542_isa_driver); | |
1165 | } | |
1166 | ||
1167 | module_init(aha1542_init); | |
1168 | module_exit(aha1542_exit); |