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staging: usbip: bugfix for isochronous packets and optimization
[zen-stable.git] / drivers / scsi / pcmcia / nsp_cs.c
blobbe3f33d31a99dc3e359190e233ae91b48e2066fe
1 /*======================================================================
2
3 NinjaSCSI-3 / NinjaSCSI-32Bi PCMCIA SCSI host adapter card driver
4 By: YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>
5
6 Ver.2.8 Support 32bit MMIO mode
7 Support Synchronous Data Transfer Request (SDTR) mode
8 Ver.2.0 Support 32bit PIO mode
9 Ver.1.1.2 Fix for scatter list buffer exceeds
10 Ver.1.1 Support scatter list
11 Ver.0.1 Initial version
12
13 This software may be used and distributed according to the terms of
14 the GNU General Public License.
15
16 ======================================================================*/
17
18 /***********************************************************************
19 This driver is for these PCcards.
20
21 I-O DATA PCSC-F (Workbit NinjaSCSI-3)
22 "WBT", "NinjaSCSI-3", "R1.0"
23 I-O DATA CBSC-II (Workbit NinjaSCSI-32Bi in 16bit mode)
24 "IO DATA", "CBSC16 ", "1"
25
26 ***********************************************************************/
27
28 #include <linux/module.h>
29 #include <linux/kernel.h>
30 #include <linux/init.h>
31 #include <linux/slab.h>
32 #include <linux/string.h>
33 #include <linux/timer.h>
34 #include <linux/ioport.h>
35 #include <linux/delay.h>
36 #include <linux/interrupt.h>
37 #include <linux/major.h>
38 #include <linux/blkdev.h>
39 #include <linux/stat.h>
40
41 #include <asm/io.h>
42 #include <asm/irq.h>
43
44 #include <../drivers/scsi/scsi.h>
45 #include <scsi/scsi_host.h>
46
47 #include <scsi/scsi.h>
48 #include <scsi/scsi_ioctl.h>
49
50 #include <pcmcia/cistpl.h>
51 #include <pcmcia/cisreg.h>
52 #include <pcmcia/ds.h>
53
54 #include "nsp_cs.h"
55
56 MODULE_AUTHOR("YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>");
57 MODULE_DESCRIPTION("WorkBit NinjaSCSI-3 / NinjaSCSI-32Bi(16bit) PCMCIA SCSI host adapter module");
58 MODULE_SUPPORTED_DEVICE("sd,sr,sg,st");
59 #ifdef MODULE_LICENSE
60 MODULE_LICENSE("GPL");
61 #endif
62
63 #include "nsp_io.h"
64
65 /*====================================================================*/
66 /* Parameters that can be set with 'insmod' */
67
68 static int nsp_burst_mode = BURST_MEM32;
69 module_param(nsp_burst_mode, int, 0);
70 MODULE_PARM_DESC(nsp_burst_mode, "Burst transfer mode (0=io8, 1=io32, 2=mem32(default))");
71
72 /* Release IO ports after configuration? */
73 static int free_ports = 0;
74 module_param(free_ports, bool, 0);
75 MODULE_PARM_DESC(free_ports, "Release IO ports after configuration? (default: 0 (=no))");
76
77 static struct scsi_host_template nsp_driver_template = {
78 .proc_name = "nsp_cs",
79 .proc_info = nsp_proc_info,
80 .name = "WorkBit NinjaSCSI-3/32Bi(16bit)",
81 .info = nsp_info,
82 .queuecommand = nsp_queuecommand,
83 /* .eh_abort_handler = nsp_eh_abort,*/
84 .eh_bus_reset_handler = nsp_eh_bus_reset,
85 .eh_host_reset_handler = nsp_eh_host_reset,
86 .can_queue = 1,
87 .this_id = NSP_INITIATOR_ID,
88 .sg_tablesize = SG_ALL,
89 .cmd_per_lun = 1,
90 .use_clustering = DISABLE_CLUSTERING,
91 };
92
93 static nsp_hw_data nsp_data_base; /* attach <-> detect glue */
94
95
96
97 /*
98 * debug, error print
99 */
100 #ifndef NSP_DEBUG
101 # define NSP_DEBUG_MASK 0x000000
102 # define nsp_msg(type, args...) nsp_cs_message("", 0, (type), args)
103 # define nsp_dbg(mask, args...) /* */
104 #else
105 # define NSP_DEBUG_MASK 0xffffff
106 # define nsp_msg(type, args...) \
107 nsp_cs_message (__func__, __LINE__, (type), args)
108 # define nsp_dbg(mask, args...) \
109 nsp_cs_dmessage(__func__, __LINE__, (mask), args)
110 #endif
111
112 #define NSP_DEBUG_QUEUECOMMAND BIT(0)
113 #define NSP_DEBUG_REGISTER BIT(1)
114 #define NSP_DEBUG_AUTOSCSI BIT(2)
115 #define NSP_DEBUG_INTR BIT(3)
116 #define NSP_DEBUG_SGLIST BIT(4)
117 #define NSP_DEBUG_BUSFREE BIT(5)
118 #define NSP_DEBUG_CDB_CONTENTS BIT(6)
119 #define NSP_DEBUG_RESELECTION BIT(7)
120 #define NSP_DEBUG_MSGINOCCUR BIT(8)
121 #define NSP_DEBUG_EEPROM BIT(9)
122 #define NSP_DEBUG_MSGOUTOCCUR BIT(10)
123 #define NSP_DEBUG_BUSRESET BIT(11)
124 #define NSP_DEBUG_RESTART BIT(12)
125 #define NSP_DEBUG_SYNC BIT(13)
126 #define NSP_DEBUG_WAIT BIT(14)
127 #define NSP_DEBUG_TARGETFLAG BIT(15)
128 #define NSP_DEBUG_PROC BIT(16)
129 #define NSP_DEBUG_INIT BIT(17)
130 #define NSP_DEBUG_DATA_IO BIT(18)
131 #define NSP_SPECIAL_PRINT_REGISTER BIT(20)
132
133 #define NSP_DEBUG_BUF_LEN 150
134
135 static inline void nsp_inc_resid(struct scsi_cmnd *SCpnt, int residInc)
136 {
137 scsi_set_resid(SCpnt, scsi_get_resid(SCpnt) + residInc);
138 }
139
140 static void nsp_cs_message(const char *func, int line, char *type, char *fmt, ...)
141 {
142 va_list args;
143 char buf[NSP_DEBUG_BUF_LEN];
144
145 va_start(args, fmt);
146 vsnprintf(buf, sizeof(buf), fmt, args);
147 va_end(args);
148
149 #ifndef NSP_DEBUG
150 printk("%snsp_cs: %s\n", type, buf);
151 #else
152 printk("%snsp_cs: %s (%d): %s\n", type, func, line, buf);
153 #endif
154 }
155
156 #ifdef NSP_DEBUG
157 static void nsp_cs_dmessage(const char *func, int line, int mask, char *fmt, ...)
158 {
159 va_list args;
160 char buf[NSP_DEBUG_BUF_LEN];
161
162 va_start(args, fmt);
163 vsnprintf(buf, sizeof(buf), fmt, args);
164 va_end(args);
165
166 if (mask & NSP_DEBUG_MASK) {
167 printk("nsp_cs-debug: 0x%x %s (%d): %s\n", mask, func, line, buf);
168 }
169 }
170 #endif
171
172 /***********************************************************/
173
174 /*====================================================
175 * Clenaup parameters and call done() functions.
176 * You must be set SCpnt->result before call this function.
177 */
178 static void nsp_scsi_done(struct scsi_cmnd *SCpnt)
179 {
180 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata;
181
182 data->CurrentSC = NULL;
183
184 SCpnt->scsi_done(SCpnt);
185 }
186
187 static int nsp_queuecommand_lck(struct scsi_cmnd *SCpnt,
188 void (*done)(struct scsi_cmnd *))
189 {
190 #ifdef NSP_DEBUG
191 /*unsigned int host_id = SCpnt->device->host->this_id;*/
192 /*unsigned int base = SCpnt->device->host->io_port;*/
193 unsigned char target = scmd_id(SCpnt);
194 #endif
195 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata;
196
197 nsp_dbg(NSP_DEBUG_QUEUECOMMAND,
198 "SCpnt=0x%p target=%d lun=%d sglist=0x%p bufflen=%d sg_count=%d",
199 SCpnt, target, SCpnt->device->lun, scsi_sglist(SCpnt),
200 scsi_bufflen(SCpnt), scsi_sg_count(SCpnt));
201 //nsp_dbg(NSP_DEBUG_QUEUECOMMAND, "before CurrentSC=0x%p", data->CurrentSC);
202
203 SCpnt->scsi_done = done;
204
205 if (data->CurrentSC != NULL) {
206 nsp_msg(KERN_DEBUG, "CurrentSC!=NULL this can't be happen");
207 SCpnt->result = DID_BAD_TARGET << 16;
208 nsp_scsi_done(SCpnt);
209 return 0;
210 }
211
212 #if 0
213 /* XXX: pcmcia-cs generates SCSI command with "scsi_info" utility.
214 This makes kernel crash when suspending... */
215 if (data->ScsiInfo->stop != 0) {
216 nsp_msg(KERN_INFO, "suspending device. reject command.");
217 SCpnt->result = DID_BAD_TARGET << 16;
218 nsp_scsi_done(SCpnt);
219 return SCSI_MLQUEUE_HOST_BUSY;
220 }
221 #endif
222
223 show_command(SCpnt);
224
225 data->CurrentSC = SCpnt;
226
227 SCpnt->SCp.Status = CHECK_CONDITION;
228 SCpnt->SCp.Message = 0;
229 SCpnt->SCp.have_data_in = IO_UNKNOWN;
230 SCpnt->SCp.sent_command = 0;
231 SCpnt->SCp.phase = PH_UNDETERMINED;
232 scsi_set_resid(SCpnt, scsi_bufflen(SCpnt));
233
234 /* setup scratch area
235 SCp.ptr : buffer pointer
236 SCp.this_residual : buffer length
237 SCp.buffer : next buffer
238 SCp.buffers_residual : left buffers in list
239 SCp.phase : current state of the command */
240 if (scsi_bufflen(SCpnt)) {
241 SCpnt->SCp.buffer = scsi_sglist(SCpnt);
242 SCpnt->SCp.ptr = BUFFER_ADDR;
243 SCpnt->SCp.this_residual = SCpnt->SCp.buffer->length;
244 SCpnt->SCp.buffers_residual = scsi_sg_count(SCpnt) - 1;
245 } else {
246 SCpnt->SCp.ptr = NULL;
247 SCpnt->SCp.this_residual = 0;
248 SCpnt->SCp.buffer = NULL;
249 SCpnt->SCp.buffers_residual = 0;
250 }
251
252 if (nsphw_start_selection(SCpnt) == FALSE) {
253 nsp_dbg(NSP_DEBUG_QUEUECOMMAND, "selection fail");
254 SCpnt->result = DID_BUS_BUSY << 16;
255 nsp_scsi_done(SCpnt);
256 return 0;
257 }
258
259
260 //nsp_dbg(NSP_DEBUG_QUEUECOMMAND, "out");
261 #ifdef NSP_DEBUG
262 data->CmdId++;
263 #endif
264 return 0;
265 }
266
267 static DEF_SCSI_QCMD(nsp_queuecommand)
268
269 /*
270 * setup PIO FIFO transfer mode and enable/disable to data out
271 */
272 static void nsp_setup_fifo(nsp_hw_data *data, int enabled)
273 {
274 unsigned int base = data->BaseAddress;
275 unsigned char transfer_mode_reg;
276
277 //nsp_dbg(NSP_DEBUG_DATA_IO, "enabled=%d", enabled);
278
279 if (enabled != FALSE) {
280 transfer_mode_reg = TRANSFER_GO | BRAIND;
281 } else {
282 transfer_mode_reg = 0;
283 }
284
285 transfer_mode_reg |= data->TransferMode;
286
287 nsp_index_write(base, TRANSFERMODE, transfer_mode_reg);
288 }
289
290 static void nsphw_init_sync(nsp_hw_data *data)
291 {
292 sync_data tmp_sync = { .SyncNegotiation = SYNC_NOT_YET,
293 .SyncPeriod = 0,
294 .SyncOffset = 0
295 };
296 int i;
297
298 /* setup sync data */
299 for ( i = 0; i < ARRAY_SIZE(data->Sync); i++ ) {
300 data->Sync[i] = tmp_sync;
301 }
302 }
303
304 /*
305 * Initialize Ninja hardware
306 */
307 static int nsphw_init(nsp_hw_data *data)
308 {
309 unsigned int base = data->BaseAddress;
310
311 nsp_dbg(NSP_DEBUG_INIT, "in base=0x%x", base);
312
313 data->ScsiClockDiv = CLOCK_40M | FAST_20;
314 data->CurrentSC = NULL;
315 data->FifoCount = 0;
316 data->TransferMode = MODE_IO8;
317
318 nsphw_init_sync(data);
319
320 /* block all interrupts */
321 nsp_write(base, IRQCONTROL, IRQCONTROL_ALLMASK);
322
323 /* setup SCSI interface */
324 nsp_write(base, IFSELECT, IF_IFSEL);
325
326 nsp_index_write(base, SCSIIRQMODE, 0);
327
328 nsp_index_write(base, TRANSFERMODE, MODE_IO8);
329 nsp_index_write(base, CLOCKDIV, data->ScsiClockDiv);
330
331 nsp_index_write(base, PARITYCTRL, 0);
332 nsp_index_write(base, POINTERCLR, POINTER_CLEAR |
333 ACK_COUNTER_CLEAR |
334 REQ_COUNTER_CLEAR |
335 HOST_COUNTER_CLEAR);
336
337 /* setup fifo asic */
338 nsp_write(base, IFSELECT, IF_REGSEL);
339 nsp_index_write(base, TERMPWRCTRL, 0);
340 if ((nsp_index_read(base, OTHERCONTROL) & TPWR_SENSE) == 0) {
341 nsp_msg(KERN_INFO, "terminator power on");
342 nsp_index_write(base, TERMPWRCTRL, POWER_ON);
343 }
344
345 nsp_index_write(base, TIMERCOUNT, 0);
346 nsp_index_write(base, TIMERCOUNT, 0); /* requires 2 times!! */
347
348 nsp_index_write(base, SYNCREG, 0);
349 nsp_index_write(base, ACKWIDTH, 0);
350
351 /* enable interrupts and ack them */
352 nsp_index_write(base, SCSIIRQMODE, SCSI_PHASE_CHANGE_EI |
353 RESELECT_EI |
354 SCSI_RESET_IRQ_EI );
355 nsp_write(base, IRQCONTROL, IRQCONTROL_ALLCLEAR);
356
357 nsp_setup_fifo(data, FALSE);
358
359 return TRUE;
360 }
361
362 /*
363 * Start selection phase
364 */
365 static int nsphw_start_selection(struct scsi_cmnd *SCpnt)
366 {
367 unsigned int host_id = SCpnt->device->host->this_id;
368 unsigned int base = SCpnt->device->host->io_port;
369 unsigned char target = scmd_id(SCpnt);
370 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata;
371 int time_out;
372 unsigned char phase, arbit;
373
374 //nsp_dbg(NSP_DEBUG_RESELECTION, "in");
375
376 phase = nsp_index_read(base, SCSIBUSMON);
377 if(phase != BUSMON_BUS_FREE) {
378 //nsp_dbg(NSP_DEBUG_RESELECTION, "bus busy");
379 return FALSE;
380 }
381
382 /* start arbitration */
383 //nsp_dbg(NSP_DEBUG_RESELECTION, "start arbit");
384 SCpnt->SCp.phase = PH_ARBSTART;
385 nsp_index_write(base, SETARBIT, ARBIT_GO);
386
387 time_out = 1000;
388 do {
389 /* XXX: what a stupid chip! */
390 arbit = nsp_index_read(base, ARBITSTATUS);
391 //nsp_dbg(NSP_DEBUG_RESELECTION, "arbit=%d, wait_count=%d", arbit, wait_count);
392 udelay(1); /* hold 1.2us */
393 } while((arbit & (ARBIT_WIN | ARBIT_FAIL)) == 0 &&
394 (time_out-- != 0));
395
396 if (!(arbit & ARBIT_WIN)) {
397 //nsp_dbg(NSP_DEBUG_RESELECTION, "arbit fail");
398 nsp_index_write(base, SETARBIT, ARBIT_FLAG_CLEAR);
399 return FALSE;
400 }
401
402 /* assert select line */
403 //nsp_dbg(NSP_DEBUG_RESELECTION, "assert SEL line");
404 SCpnt->SCp.phase = PH_SELSTART;
405 udelay(3); /* wait 2.4us */
406 nsp_index_write(base, SCSIDATALATCH, BIT(host_id) | BIT(target));
407 nsp_index_write(base, SCSIBUSCTRL, SCSI_SEL | SCSI_BSY | SCSI_ATN);
408 udelay(2); /* wait >1.2us */
409 nsp_index_write(base, SCSIBUSCTRL, SCSI_SEL | SCSI_BSY | SCSI_DATAOUT_ENB | SCSI_ATN);
410 nsp_index_write(base, SETARBIT, ARBIT_FLAG_CLEAR);
411 /*udelay(1);*/ /* wait >90ns */
412 nsp_index_write(base, SCSIBUSCTRL, SCSI_SEL | SCSI_DATAOUT_ENB | SCSI_ATN);
413
414 /* check selection timeout */
415 nsp_start_timer(SCpnt, 1000/51);
416 data->SelectionTimeOut = 1;
417
418 return TRUE;
419 }
420
421 struct nsp_sync_table {
422 unsigned int min_period;
423 unsigned int max_period;
424 unsigned int chip_period;
425 unsigned int ack_width;
426 };
427
428 static struct nsp_sync_table nsp_sync_table_40M[] = {
429 {0x0c, 0x0c, 0x1, 0}, /* 20MB 50ns*/
430 {0x19, 0x19, 0x3, 1}, /* 10MB 100ns*/
431 {0x1a, 0x25, 0x5, 2}, /* 7.5MB 150ns*/
432 {0x26, 0x32, 0x7, 3}, /* 5MB 200ns*/
433 { 0, 0, 0, 0},
434 };
435
436 static struct nsp_sync_table nsp_sync_table_20M[] = {
437 {0x19, 0x19, 0x1, 0}, /* 10MB 100ns*/
438 {0x1a, 0x25, 0x2, 0}, /* 7.5MB 150ns*/
439 {0x26, 0x32, 0x3, 1}, /* 5MB 200ns*/
440 { 0, 0, 0, 0},
441 };
442
443 /*
444 * setup synchronous data transfer mode
445 */
446 static int nsp_analyze_sdtr(struct scsi_cmnd *SCpnt)
447 {
448 unsigned char target = scmd_id(SCpnt);
449 // unsigned char lun = SCpnt->device->lun;
450 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata;
451 sync_data *sync = &(data->Sync[target]);
452 struct nsp_sync_table *sync_table;
453 unsigned int period, offset;
454 int i;
455
456
457 nsp_dbg(NSP_DEBUG_SYNC, "in");
458
459 period = sync->SyncPeriod;
460 offset = sync->SyncOffset;
461
462 nsp_dbg(NSP_DEBUG_SYNC, "period=0x%x, offset=0x%x", period, offset);
463
464 if ((data->ScsiClockDiv & (BIT(0)|BIT(1))) == CLOCK_20M) {
465 sync_table = nsp_sync_table_20M;
466 } else {
467 sync_table = nsp_sync_table_40M;
468 }
469
470 for ( i = 0; sync_table->max_period != 0; i++, sync_table++) {
471 if ( period >= sync_table->min_period &&
472 period <= sync_table->max_period ) {
473 break;
474 }
475 }
476
477 if (period != 0 && sync_table->max_period == 0) {
478 /*
479 * No proper period/offset found
480 */
481 nsp_dbg(NSP_DEBUG_SYNC, "no proper period/offset");
482
483 sync->SyncPeriod = 0;
484 sync->SyncOffset = 0;
485 sync->SyncRegister = 0;
486 sync->AckWidth = 0;
487
488 return FALSE;
489 }
490
491 sync->SyncRegister = (sync_table->chip_period << SYNCREG_PERIOD_SHIFT) |
492 (offset & SYNCREG_OFFSET_MASK);
493 sync->AckWidth = sync_table->ack_width;
494
495 nsp_dbg(NSP_DEBUG_SYNC, "sync_reg=0x%x, ack_width=0x%x", sync->SyncRegister, sync->AckWidth);
496
497 return TRUE;
498 }
499
500
501 /*
502 * start ninja hardware timer
503 */
504 static void nsp_start_timer(struct scsi_cmnd *SCpnt, int time)
505 {
506 unsigned int base = SCpnt->device->host->io_port;
507 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata;
508
509 //nsp_dbg(NSP_DEBUG_INTR, "in SCpnt=0x%p, time=%d", SCpnt, time);
510 data->TimerCount = time;
511 nsp_index_write(base, TIMERCOUNT, time);
512 }
513
514 /*
515 * wait for bus phase change
516 */
517 static int nsp_negate_signal(struct scsi_cmnd *SCpnt, unsigned char mask,
518 char *str)
519 {
520 unsigned int base = SCpnt->device->host->io_port;
521 unsigned char reg;
522 int time_out;
523
524 //nsp_dbg(NSP_DEBUG_INTR, "in");
525
526 time_out = 100;
527
528 do {
529 reg = nsp_index_read(base, SCSIBUSMON);
530 if (reg == 0xff) {
531 break;
532 }
533 } while ((--time_out != 0) && (reg & mask) != 0);
534
535 if (time_out == 0) {
536 nsp_msg(KERN_DEBUG, " %s signal off timeut", str);
537 }
538
539 return 0;
540 }
541
542 /*
543 * expect Ninja Irq
544 */
545 static int nsp_expect_signal(struct scsi_cmnd *SCpnt,
546 unsigned char current_phase,
547 unsigned char mask)
548 {
549 unsigned int base = SCpnt->device->host->io_port;
550 int time_out;
551 unsigned char phase, i_src;
552
553 //nsp_dbg(NSP_DEBUG_INTR, "current_phase=0x%x, mask=0x%x", current_phase, mask);
554
555 time_out = 100;
556 do {
557 phase = nsp_index_read(base, SCSIBUSMON);
558 if (phase == 0xff) {
559 //nsp_dbg(NSP_DEBUG_INTR, "ret -1");
560 return -1;
561 }
562 i_src = nsp_read(base, IRQSTATUS);
563 if (i_src & IRQSTATUS_SCSI) {
564 //nsp_dbg(NSP_DEBUG_INTR, "ret 0 found scsi signal");
565 return 0;
566 }
567 if ((phase & mask) != 0 && (phase & BUSMON_PHASE_MASK) == current_phase) {
568 //nsp_dbg(NSP_DEBUG_INTR, "ret 1 phase=0x%x", phase);
569 return 1;
570 }
571 } while(time_out-- != 0);
572
573 //nsp_dbg(NSP_DEBUG_INTR, "timeout");
574 return -1;
575 }
576
577 /*
578 * transfer SCSI message
579 */
580 static int nsp_xfer(struct scsi_cmnd *SCpnt, int phase)
581 {
582 unsigned int base = SCpnt->device->host->io_port;
583 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata;
584 char *buf = data->MsgBuffer;
585 int len = min(MSGBUF_SIZE, data->MsgLen);
586 int ptr;
587 int ret;
588
589 //nsp_dbg(NSP_DEBUG_DATA_IO, "in");
590 for (ptr = 0; len > 0; len--, ptr++) {
591
592 ret = nsp_expect_signal(SCpnt, phase, BUSMON_REQ);
593 if (ret <= 0) {
594 nsp_dbg(NSP_DEBUG_DATA_IO, "xfer quit");
595 return 0;
596 }
597
598 /* if last byte, negate ATN */
599 if (len == 1 && SCpnt->SCp.phase == PH_MSG_OUT) {
600 nsp_index_write(base, SCSIBUSCTRL, AUTODIRECTION | ACKENB);
601 }
602
603 /* read & write message */
604 if (phase & BUSMON_IO) {
605 nsp_dbg(NSP_DEBUG_DATA_IO, "read msg");
606 buf[ptr] = nsp_index_read(base, SCSIDATAWITHACK);
607 } else {
608 nsp_dbg(NSP_DEBUG_DATA_IO, "write msg");
609 nsp_index_write(base, SCSIDATAWITHACK, buf[ptr]);
610 }
611 nsp_negate_signal(SCpnt, BUSMON_ACK, "xfer<ack>");
612
613 }
614 return len;
615 }
616
617 /*
618 * get extra SCSI data from fifo
619 */
620 static int nsp_dataphase_bypass(struct scsi_cmnd *SCpnt)
621 {
622 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata;
623 unsigned int count;
624
625 //nsp_dbg(NSP_DEBUG_DATA_IO, "in");
626
627 if (SCpnt->SCp.have_data_in != IO_IN) {
628 return 0;
629 }
630
631 count = nsp_fifo_count(SCpnt);
632 if (data->FifoCount == count) {
633 //nsp_dbg(NSP_DEBUG_DATA_IO, "not use bypass quirk");
634 return 0;
635 }
636
637 /*
638 * XXX: NSP_QUIRK
639 * data phase skip only occures in case of SCSI_LOW_READ
640 */
641 nsp_dbg(NSP_DEBUG_DATA_IO, "use bypass quirk");
642 SCpnt->SCp.phase = PH_DATA;
643 nsp_pio_read(SCpnt);
644 nsp_setup_fifo(data, FALSE);
645
646 return 0;
647 }
648
649 /*
650 * accept reselection
651 */
652 static int nsp_reselected(struct scsi_cmnd *SCpnt)
653 {
654 unsigned int base = SCpnt->device->host->io_port;
655 unsigned int host_id = SCpnt->device->host->this_id;
656 //nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata;
657 unsigned char bus_reg;
658 unsigned char id_reg, tmp;
659 int target;
660
661 nsp_dbg(NSP_DEBUG_RESELECTION, "in");
662
663 id_reg = nsp_index_read(base, RESELECTID);
664 tmp = id_reg & (~BIT(host_id));
665 target = 0;
666 while(tmp != 0) {
667 if (tmp & BIT(0)) {
668 break;
669 }
670 tmp >>= 1;
671 target++;
672 }
673
674 if (scmd_id(SCpnt) != target) {
675 nsp_msg(KERN_ERR, "XXX: reselect ID must be %d in this implementation.", target);
676 }
677
678 nsp_negate_signal(SCpnt, BUSMON_SEL, "reselect<SEL>");
679
680 nsp_nexus(SCpnt);
681 bus_reg = nsp_index_read(base, SCSIBUSCTRL) & ~(SCSI_BSY | SCSI_ATN);
682 nsp_index_write(base, SCSIBUSCTRL, bus_reg);
683 nsp_index_write(base, SCSIBUSCTRL, bus_reg | AUTODIRECTION | ACKENB);
684
685 return TRUE;
686 }
687
688 /*
689 * count how many data transferd
690 */
691 static int nsp_fifo_count(struct scsi_cmnd *SCpnt)
692 {
693 unsigned int base = SCpnt->device->host->io_port;
694 unsigned int count;
695 unsigned int l, m, h, dummy;
696
697 nsp_index_write(base, POINTERCLR, POINTER_CLEAR | ACK_COUNTER);
698
699 l = nsp_index_read(base, TRANSFERCOUNT);
700 m = nsp_index_read(base, TRANSFERCOUNT);
701 h = nsp_index_read(base, TRANSFERCOUNT);
702 dummy = nsp_index_read(base, TRANSFERCOUNT); /* required this! */
703
704 count = (h << 16) | (m << 8) | (l << 0);
705
706 //nsp_dbg(NSP_DEBUG_DATA_IO, "count=0x%x", count);
707
708 return count;
709 }
710
711 /* fifo size */
712 #define RFIFO_CRIT 64
713 #define WFIFO_CRIT 64
714
715 /*
716 * read data in DATA IN phase
717 */
718 static void nsp_pio_read(struct scsi_cmnd *SCpnt)
719 {
720 unsigned int base = SCpnt->device->host->io_port;
721 unsigned long mmio_base = SCpnt->device->host->base;
722 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata;
723 long time_out;
724 int ocount, res;
725 unsigned char stat, fifo_stat;
726
727 ocount = data->FifoCount;
728
729 nsp_dbg(NSP_DEBUG_DATA_IO, "in SCpnt=0x%p resid=%d ocount=%d ptr=0x%p this_residual=%d buffers=0x%p nbuf=%d",
730 SCpnt, scsi_get_resid(SCpnt), ocount, SCpnt->SCp.ptr,
731 SCpnt->SCp.this_residual, SCpnt->SCp.buffer,
732 SCpnt->SCp.buffers_residual);
733
734 time_out = 1000;
735
736 while ((time_out-- != 0) &&
737 (SCpnt->SCp.this_residual > 0 || SCpnt->SCp.buffers_residual > 0 ) ) {
738
739 stat = nsp_index_read(base, SCSIBUSMON);
740 stat &= BUSMON_PHASE_MASK;
741
742
743 res = nsp_fifo_count(SCpnt) - ocount;
744 //nsp_dbg(NSP_DEBUG_DATA_IO, "ptr=0x%p this=0x%x ocount=0x%x res=0x%x", SCpnt->SCp.ptr, SCpnt->SCp.this_residual, ocount, res);
745 if (res == 0) { /* if some data avilable ? */
746 if (stat == BUSPHASE_DATA_IN) { /* phase changed? */
747 //nsp_dbg(NSP_DEBUG_DATA_IO, " wait for data this=%d", SCpnt->SCp.this_residual);
748 continue;
749 } else {
750 nsp_dbg(NSP_DEBUG_DATA_IO, "phase changed stat=0x%x", stat);
751 break;
752 }
753 }
754
755 fifo_stat = nsp_read(base, FIFOSTATUS);
756 if ((fifo_stat & FIFOSTATUS_FULL_EMPTY) == 0 &&
757 stat == BUSPHASE_DATA_IN) {
758 continue;
759 }
760
761 res = min(res, SCpnt->SCp.this_residual);
762
763 switch (data->TransferMode) {
764 case MODE_IO32:
765 res &= ~(BIT(1)|BIT(0)); /* align 4 */
766 nsp_fifo32_read(base, SCpnt->SCp.ptr, res >> 2);
767 break;
768 case MODE_IO8:
769 nsp_fifo8_read (base, SCpnt->SCp.ptr, res );
770 break;
771
772 case MODE_MEM32:
773 res &= ~(BIT(1)|BIT(0)); /* align 4 */
774 nsp_mmio_fifo32_read(mmio_base, SCpnt->SCp.ptr, res >> 2);
775 break;
776
777 default:
778 nsp_dbg(NSP_DEBUG_DATA_IO, "unknown read mode");
779 return;
780 }
781
782 nsp_inc_resid(SCpnt, -res);
783 SCpnt->SCp.ptr += res;
784 SCpnt->SCp.this_residual -= res;
785 ocount += res;
786 //nsp_dbg(NSP_DEBUG_DATA_IO, "ptr=0x%p this_residual=0x%x ocount=0x%x", SCpnt->SCp.ptr, SCpnt->SCp.this_residual, ocount);
787
788 /* go to next scatter list if available */
789 if (SCpnt->SCp.this_residual == 0 &&
790 SCpnt->SCp.buffers_residual != 0 ) {
791 //nsp_dbg(NSP_DEBUG_DATA_IO, "scatterlist next timeout=%d", time_out);
792 SCpnt->SCp.buffers_residual--;
793 SCpnt->SCp.buffer++;
794 SCpnt->SCp.ptr = BUFFER_ADDR;
795 SCpnt->SCp.this_residual = SCpnt->SCp.buffer->length;
796 time_out = 1000;
797
798 //nsp_dbg(NSP_DEBUG_DATA_IO, "page: 0x%p, off: 0x%x", SCpnt->SCp.buffer->page, SCpnt->SCp.buffer->offset);
799 }
800 }
801
802 data->FifoCount = ocount;
803
804 if (time_out < 0) {
805 nsp_msg(KERN_DEBUG, "pio read timeout resid=%d this_residual=%d buffers_residual=%d",
806 scsi_get_resid(SCpnt), SCpnt->SCp.this_residual,
807 SCpnt->SCp.buffers_residual);
808 }
809 nsp_dbg(NSP_DEBUG_DATA_IO, "read ocount=0x%x", ocount);
810 nsp_dbg(NSP_DEBUG_DATA_IO, "r cmd=%d resid=0x%x\n", data->CmdId,
811 scsi_get_resid(SCpnt));
812 }
813
814 /*
815 * write data in DATA OUT phase
816 */
817 static void nsp_pio_write(struct scsi_cmnd *SCpnt)
818 {
819 unsigned int base = SCpnt->device->host->io_port;
820 unsigned long mmio_base = SCpnt->device->host->base;
821 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata;
822 int time_out;
823 int ocount, res;
824 unsigned char stat;
825
826 ocount = data->FifoCount;
827
828 nsp_dbg(NSP_DEBUG_DATA_IO, "in fifocount=%d ptr=0x%p this_residual=%d buffers=0x%p nbuf=%d resid=0x%x",
829 data->FifoCount, SCpnt->SCp.ptr, SCpnt->SCp.this_residual,
830 SCpnt->SCp.buffer, SCpnt->SCp.buffers_residual,
831 scsi_get_resid(SCpnt));
832
833 time_out = 1000;
834
835 while ((time_out-- != 0) &&
836 (SCpnt->SCp.this_residual > 0 || SCpnt->SCp.buffers_residual > 0)) {
837 stat = nsp_index_read(base, SCSIBUSMON);
838 stat &= BUSMON_PHASE_MASK;
839
840 if (stat != BUSPHASE_DATA_OUT) {
841 res = ocount - nsp_fifo_count(SCpnt);
842
843 nsp_dbg(NSP_DEBUG_DATA_IO, "phase changed stat=0x%x, res=%d\n", stat, res);
844 /* Put back pointer */
845 nsp_inc_resid(SCpnt, res);
846 SCpnt->SCp.ptr -= res;
847 SCpnt->SCp.this_residual += res;
848 ocount -= res;
849
850 break;
851 }
852
853 res = ocount - nsp_fifo_count(SCpnt);
854 if (res > 0) { /* write all data? */
855 nsp_dbg(NSP_DEBUG_DATA_IO, "wait for all data out. ocount=0x%x res=%d", ocount, res);
856 continue;
857 }
858
859 res = min(SCpnt->SCp.this_residual, WFIFO_CRIT);
860
861 //nsp_dbg(NSP_DEBUG_DATA_IO, "ptr=0x%p this=0x%x res=0x%x", SCpnt->SCp.ptr, SCpnt->SCp.this_residual, res);
862 switch (data->TransferMode) {
863 case MODE_IO32:
864 res &= ~(BIT(1)|BIT(0)); /* align 4 */
865 nsp_fifo32_write(base, SCpnt->SCp.ptr, res >> 2);
866 break;
867 case MODE_IO8:
868 nsp_fifo8_write (base, SCpnt->SCp.ptr, res );
869 break;
870
871 case MODE_MEM32:
872 res &= ~(BIT(1)|BIT(0)); /* align 4 */
873 nsp_mmio_fifo32_write(mmio_base, SCpnt->SCp.ptr, res >> 2);
874 break;
875
876 default:
877 nsp_dbg(NSP_DEBUG_DATA_IO, "unknown write mode");
878 break;
879 }
880
881 nsp_inc_resid(SCpnt, -res);
882 SCpnt->SCp.ptr += res;
883 SCpnt->SCp.this_residual -= res;
884 ocount += res;
885
886 /* go to next scatter list if available */
887 if (SCpnt->SCp.this_residual == 0 &&
888 SCpnt->SCp.buffers_residual != 0 ) {
889 //nsp_dbg(NSP_DEBUG_DATA_IO, "scatterlist next");
890 SCpnt->SCp.buffers_residual--;
891 SCpnt->SCp.buffer++;
892 SCpnt->SCp.ptr = BUFFER_ADDR;
893 SCpnt->SCp.this_residual = SCpnt->SCp.buffer->length;
894 time_out = 1000;
895 }
896 }
897
898 data->FifoCount = ocount;
899
900 if (time_out < 0) {
901 nsp_msg(KERN_DEBUG, "pio write timeout resid=0x%x",
902 scsi_get_resid(SCpnt));
903 }
904 nsp_dbg(NSP_DEBUG_DATA_IO, "write ocount=0x%x", ocount);
905 nsp_dbg(NSP_DEBUG_DATA_IO, "w cmd=%d resid=0x%x\n", data->CmdId,
906 scsi_get_resid(SCpnt));
907 }
908 #undef RFIFO_CRIT
909 #undef WFIFO_CRIT
910
911 /*
912 * setup synchronous/asynchronous data transfer mode
913 */
914 static int nsp_nexus(struct scsi_cmnd *SCpnt)
915 {
916 unsigned int base = SCpnt->device->host->io_port;
917 unsigned char target = scmd_id(SCpnt);
918 // unsigned char lun = SCpnt->device->lun;
919 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata;
920 sync_data *sync = &(data->Sync[target]);
921
922 //nsp_dbg(NSP_DEBUG_DATA_IO, "in SCpnt=0x%p", SCpnt);
923
924 /* setup synch transfer registers */
925 nsp_index_write(base, SYNCREG, sync->SyncRegister);
926 nsp_index_write(base, ACKWIDTH, sync->AckWidth);
927
928 if (scsi_get_resid(SCpnt) % 4 != 0 ||
929 scsi_get_resid(SCpnt) <= PAGE_SIZE ) {
930 data->TransferMode = MODE_IO8;
931 } else if (nsp_burst_mode == BURST_MEM32) {
932 data->TransferMode = MODE_MEM32;
933 } else if (nsp_burst_mode == BURST_IO32) {
934 data->TransferMode = MODE_IO32;
935 } else {
936 data->TransferMode = MODE_IO8;
937 }
938
939 /* setup pdma fifo */
940 nsp_setup_fifo(data, TRUE);
941
942 /* clear ack counter */
943 data->FifoCount = 0;
944 nsp_index_write(base, POINTERCLR, POINTER_CLEAR |
945 ACK_COUNTER_CLEAR |
946 REQ_COUNTER_CLEAR |
947 HOST_COUNTER_CLEAR);
948
949 return 0;
950 }
951
952 #include "nsp_message.c"
953 /*
954 * interrupt handler
955 */
956 static irqreturn_t nspintr(int irq, void *dev_id)
957 {
958 unsigned int base;
959 unsigned char irq_status, irq_phase, phase;
960 struct scsi_cmnd *tmpSC;
961 unsigned char target, lun;
962 unsigned int *sync_neg;
963 int i, tmp;
964 nsp_hw_data *data;
965
966
967 //nsp_dbg(NSP_DEBUG_INTR, "dev_id=0x%p", dev_id);
968 //nsp_dbg(NSP_DEBUG_INTR, "host=0x%p", ((scsi_info_t *)dev_id)->host);
969
970 if ( dev_id != NULL &&
971 ((scsi_info_t *)dev_id)->host != NULL ) {
972 scsi_info_t *info = (scsi_info_t *)dev_id;
973
974 data = (nsp_hw_data *)info->host->hostdata;
975 } else {
976 nsp_dbg(NSP_DEBUG_INTR, "host data wrong");
977 return IRQ_NONE;
978 }
979
980 //nsp_dbg(NSP_DEBUG_INTR, "&nsp_data_base=0x%p, dev_id=0x%p", &nsp_data_base, dev_id);
981
982 base = data->BaseAddress;
983 //nsp_dbg(NSP_DEBUG_INTR, "base=0x%x", base);
984
985 /*
986 * interrupt check
987 */
988 nsp_write(base, IRQCONTROL, IRQCONTROL_IRQDISABLE);
989 irq_status = nsp_read(base, IRQSTATUS);
990 //nsp_dbg(NSP_DEBUG_INTR, "irq_status=0x%x", irq_status);
991 if ((irq_status == 0xff) || ((irq_status & IRQSTATUS_MASK) == 0)) {
992 nsp_write(base, IRQCONTROL, 0);
993 //nsp_dbg(NSP_DEBUG_INTR, "no irq/shared irq");
994 return IRQ_NONE;
995 }
996
997 /* XXX: IMPORTANT
998 * Do not read an irq_phase register if no scsi phase interrupt.
999 * Unless, you should lose a scsi phase interrupt.
1000 */
1001 phase = nsp_index_read(base, SCSIBUSMON);
1002 if((irq_status & IRQSTATUS_SCSI) != 0) {
1003 irq_phase = nsp_index_read(base, IRQPHASESENCE);
1004 } else {
1005 irq_phase = 0;
1006 }
1007
1008 //nsp_dbg(NSP_DEBUG_INTR, "irq_phase=0x%x", irq_phase);
1009
1010 /*
1011 * timer interrupt handler (scsi vs timer interrupts)
1012 */
1013 //nsp_dbg(NSP_DEBUG_INTR, "timercount=%d", data->TimerCount);
1014 if (data->TimerCount != 0) {
1015 //nsp_dbg(NSP_DEBUG_INTR, "stop timer");
1016 nsp_index_write(base, TIMERCOUNT, 0);
1017 nsp_index_write(base, TIMERCOUNT, 0);
1018 data->TimerCount = 0;
1019 }
1020
1021 if ((irq_status & IRQSTATUS_MASK) == IRQSTATUS_TIMER &&
1022 data->SelectionTimeOut == 0) {
1023 //nsp_dbg(NSP_DEBUG_INTR, "timer start");
1024 nsp_write(base, IRQCONTROL, IRQCONTROL_TIMER_CLEAR);
1025 return IRQ_HANDLED;
1026 }
1027
1028 nsp_write(base, IRQCONTROL, IRQCONTROL_TIMER_CLEAR | IRQCONTROL_FIFO_CLEAR);
1029
1030 if ((irq_status & IRQSTATUS_SCSI) &&
1031 (irq_phase & SCSI_RESET_IRQ)) {
1032 nsp_msg(KERN_ERR, "bus reset (power off?)");
1033
1034 nsphw_init(data);
1035 nsp_bus_reset(data);
1036
1037 if(data->CurrentSC != NULL) {
1038 tmpSC = data->CurrentSC;
1039 tmpSC->result = (DID_RESET << 16) |
1040 ((tmpSC->SCp.Message & 0xff) << 8) |
1041 ((tmpSC->SCp.Status & 0xff) << 0);
1042 nsp_scsi_done(tmpSC);
1043 }
1044 return IRQ_HANDLED;
1045 }
1046
1047 if (data->CurrentSC == NULL) {
1048 nsp_msg(KERN_ERR, "CurrentSC==NULL irq_status=0x%x phase=0x%x irq_phase=0x%x this can't be happen. reset everything", irq_status, phase, irq_phase);
1049 nsphw_init(data);
1050 nsp_bus_reset(data);
1051 return IRQ_HANDLED;
1052 }
1053
1054 tmpSC = data->CurrentSC;
1055 target = tmpSC->device->id;
1056 lun = tmpSC->device->lun;
1057 sync_neg = &(data->Sync[target].SyncNegotiation);
1058
1059 /*
1060 * parse hardware SCSI irq reasons register
1061 */
1062 if (irq_status & IRQSTATUS_SCSI) {
1063 if (irq_phase & RESELECT_IRQ) {
1064 nsp_dbg(NSP_DEBUG_INTR, "reselect");
1065 nsp_write(base, IRQCONTROL, IRQCONTROL_RESELECT_CLEAR);
1066 if (nsp_reselected(tmpSC) != FALSE) {
1067 return IRQ_HANDLED;
1068 }
1069 }
1070
1071 if ((irq_phase & (PHASE_CHANGE_IRQ | LATCHED_BUS_FREE)) == 0) {
1072 return IRQ_HANDLED;
1073 }
1074 }
1075
1076 //show_phase(tmpSC);
1077
1078 switch(tmpSC->SCp.phase) {
1079 case PH_SELSTART:
1080 // *sync_neg = SYNC_NOT_YET;
1081 if ((phase & BUSMON_BSY) == 0) {
1082 //nsp_dbg(NSP_DEBUG_INTR, "selection count=%d", data->SelectionTimeOut);
1083 if (data->SelectionTimeOut >= NSP_SELTIMEOUT) {
1084 nsp_dbg(NSP_DEBUG_INTR, "selection time out");
1085 data->SelectionTimeOut = 0;
1086 nsp_index_write(base, SCSIBUSCTRL, 0);
1087
1088 tmpSC->result = DID_TIME_OUT << 16;
1089 nsp_scsi_done(tmpSC);
1090
1091 return IRQ_HANDLED;
1092 }
1093 data->SelectionTimeOut += 1;
1094 nsp_start_timer(tmpSC, 1000/51);
1095 return IRQ_HANDLED;
1096 }
1097
1098 /* attention assert */
1099 //nsp_dbg(NSP_DEBUG_INTR, "attention assert");
1100 data->SelectionTimeOut = 0;
1101 tmpSC->SCp.phase = PH_SELECTED;
1102 nsp_index_write(base, SCSIBUSCTRL, SCSI_ATN);
1103 udelay(1);
1104 nsp_index_write(base, SCSIBUSCTRL, SCSI_ATN | AUTODIRECTION | ACKENB);
1105 return IRQ_HANDLED;
1106
1107 break;
1108
1109 case PH_RESELECT:
1110 //nsp_dbg(NSP_DEBUG_INTR, "phase reselect");
1111 // *sync_neg = SYNC_NOT_YET;
1112 if ((phase & BUSMON_PHASE_MASK) != BUSPHASE_MESSAGE_IN) {
1113
1114 tmpSC->result = DID_ABORT << 16;
1115 nsp_scsi_done(tmpSC);
1116 return IRQ_HANDLED;
1117 }
1118 /* fall thru */
1119 default:
1120 if ((irq_status & (IRQSTATUS_SCSI | IRQSTATUS_FIFO)) == 0) {
1121 return IRQ_HANDLED;
1122 }
1123 break;
1124 }
1125
1126 /*
1127 * SCSI sequencer
1128 */
1129 //nsp_dbg(NSP_DEBUG_INTR, "start scsi seq");
1130
1131 /* normal disconnect */
1132 if (((tmpSC->SCp.phase == PH_MSG_IN) || (tmpSC->SCp.phase == PH_MSG_OUT)) &&
1133 (irq_phase & LATCHED_BUS_FREE) != 0 ) {
1134 nsp_dbg(NSP_DEBUG_INTR, "normal disconnect irq_status=0x%x, phase=0x%x, irq_phase=0x%x", irq_status, phase, irq_phase);
1135
1136 //*sync_neg = SYNC_NOT_YET;
1137
1138 if ((tmpSC->SCp.Message == MSG_COMMAND_COMPLETE)) { /* all command complete and return status */
1139 tmpSC->result = (DID_OK << 16) |
1140 ((tmpSC->SCp.Message & 0xff) << 8) |
1141 ((tmpSC->SCp.Status & 0xff) << 0);
1142 nsp_dbg(NSP_DEBUG_INTR, "command complete result=0x%x", tmpSC->result);
1143 nsp_scsi_done(tmpSC);
1144
1145 return IRQ_HANDLED;
1146 }
1147
1148 return IRQ_HANDLED;
1149 }
1150
1151
1152 /* check unexpected bus free state */
1153 if (phase == 0) {
1154 nsp_msg(KERN_DEBUG, "unexpected bus free. irq_status=0x%x, phase=0x%x, irq_phase=0x%x", irq_status, phase, irq_phase);
1155
1156 *sync_neg = SYNC_NG;
1157 tmpSC->result = DID_ERROR << 16;
1158 nsp_scsi_done(tmpSC);
1159 return IRQ_HANDLED;
1160 }
1161
1162 switch (phase & BUSMON_PHASE_MASK) {
1163 case BUSPHASE_COMMAND:
1164 nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE_COMMAND");
1165 if ((phase & BUSMON_REQ) == 0) {
1166 nsp_dbg(NSP_DEBUG_INTR, "REQ == 0");
1167 return IRQ_HANDLED;
1168 }
1169
1170 tmpSC->SCp.phase = PH_COMMAND;
1171
1172 nsp_nexus(tmpSC);
1173
1174 /* write scsi command */
1175 nsp_dbg(NSP_DEBUG_INTR, "cmd_len=%d", tmpSC->cmd_len);
1176 nsp_index_write(base, COMMANDCTRL, CLEAR_COMMAND_POINTER);
1177 for (i = 0; i < tmpSC->cmd_len; i++) {
1178 nsp_index_write(base, COMMANDDATA, tmpSC->cmnd[i]);
1179 }
1180 nsp_index_write(base, COMMANDCTRL, CLEAR_COMMAND_POINTER | AUTO_COMMAND_GO);
1181 break;
1182
1183 case BUSPHASE_DATA_OUT:
1184 nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE_DATA_OUT");
1185
1186 tmpSC->SCp.phase = PH_DATA;
1187 tmpSC->SCp.have_data_in = IO_OUT;
1188
1189 nsp_pio_write(tmpSC);
1190
1191 break;
1192
1193 case BUSPHASE_DATA_IN:
1194 nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE_DATA_IN");
1195
1196 tmpSC->SCp.phase = PH_DATA;
1197 tmpSC->SCp.have_data_in = IO_IN;
1198
1199 nsp_pio_read(tmpSC);
1200
1201 break;
1202
1203 case BUSPHASE_STATUS:
1204 nsp_dataphase_bypass(tmpSC);
1205 nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE_STATUS");
1206
1207 tmpSC->SCp.phase = PH_STATUS;
1208
1209 tmpSC->SCp.Status = nsp_index_read(base, SCSIDATAWITHACK);
1210 nsp_dbg(NSP_DEBUG_INTR, "message=0x%x status=0x%x", tmpSC->SCp.Message, tmpSC->SCp.Status);
1211
1212 break;
1213
1214 case BUSPHASE_MESSAGE_OUT:
1215 nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE_MESSAGE_OUT");
1216 if ((phase & BUSMON_REQ) == 0) {
1217 goto timer_out;
1218 }
1219
1220 tmpSC->SCp.phase = PH_MSG_OUT;
1221
1222 //*sync_neg = SYNC_NOT_YET;
1223
1224 data->MsgLen = i = 0;
1225 data->MsgBuffer[i] = IDENTIFY(TRUE, lun); i++;
1226
1227 if (*sync_neg == SYNC_NOT_YET) {
1228 data->Sync[target].SyncPeriod = 0;
1229 data->Sync[target].SyncOffset = 0;
1230
1231 /**/
1232 data->MsgBuffer[i] = MSG_EXTENDED; i++;
1233 data->MsgBuffer[i] = 3; i++;
1234 data->MsgBuffer[i] = MSG_EXT_SDTR; i++;
1235 data->MsgBuffer[i] = 0x0c; i++;
1236 data->MsgBuffer[i] = 15; i++;
1237 /**/
1238 }
1239 data->MsgLen = i;
1240
1241 nsp_analyze_sdtr(tmpSC);
1242 show_message(data);
1243 nsp_message_out(tmpSC);
1244 break;
1245
1246 case BUSPHASE_MESSAGE_IN:
1247 nsp_dataphase_bypass(tmpSC);
1248 nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE_MESSAGE_IN");
1249 if ((phase & BUSMON_REQ) == 0) {
1250 goto timer_out;
1251 }
1252
1253 tmpSC->SCp.phase = PH_MSG_IN;
1254 nsp_message_in(tmpSC);
1255
1256 /**/
1257 if (*sync_neg == SYNC_NOT_YET) {
1258 //nsp_dbg(NSP_DEBUG_INTR, "sync target=%d,lun=%d",target,lun);
1259
1260 if (data->MsgLen >= 5 &&
1261 data->MsgBuffer[0] == MSG_EXTENDED &&
1262 data->MsgBuffer[1] == 3 &&
1263 data->MsgBuffer[2] == MSG_EXT_SDTR ) {
1264 data->Sync[target].SyncPeriod = data->MsgBuffer[3];
1265 data->Sync[target].SyncOffset = data->MsgBuffer[4];
1266 //nsp_dbg(NSP_DEBUG_INTR, "sync ok, %d %d", data->MsgBuffer[3], data->MsgBuffer[4]);
1267 *sync_neg = SYNC_OK;
1268 } else {
1269 data->Sync[target].SyncPeriod = 0;
1270 data->Sync[target].SyncOffset = 0;
1271 *sync_neg = SYNC_NG;
1272 }
1273 nsp_analyze_sdtr(tmpSC);
1274 }
1275 /**/
1276
1277 /* search last messeage byte */
1278 tmp = -1;
1279 for (i = 0; i < data->MsgLen; i++) {
1280 tmp = data->MsgBuffer[i];
1281 if (data->MsgBuffer[i] == MSG_EXTENDED) {
1282 i += (1 + data->MsgBuffer[i+1]);
1283 }
1284 }
1285 tmpSC->SCp.Message = tmp;
1286
1287 nsp_dbg(NSP_DEBUG_INTR, "message=0x%x len=%d", tmpSC->SCp.Message, data->MsgLen);
1288 show_message(data);
1289
1290 break;
1291
1292 case BUSPHASE_SELECT:
1293 default:
1294 nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE other");
1295
1296 break;
1297 }
1298
1299 //nsp_dbg(NSP_DEBUG_INTR, "out");
1300 return IRQ_HANDLED;
1301
1302 timer_out:
1303 nsp_start_timer(tmpSC, 1000/102);
1304 return IRQ_HANDLED;
1305 }
1306
1307 #ifdef NSP_DEBUG
1308 #include "nsp_debug.c"
1309 #endif /* NSP_DEBUG */
1310
1311 /*----------------------------------------------------------------*/
1312 /* look for ninja3 card and init if found */
1313 /*----------------------------------------------------------------*/
1314 static struct Scsi_Host *nsp_detect(struct scsi_host_template *sht)
1315 {
1316 struct Scsi_Host *host; /* registered host structure */
1317 nsp_hw_data *data_b = &nsp_data_base, *data;
1318
1319 nsp_dbg(NSP_DEBUG_INIT, "this_id=%d", sht->this_id);
1320 host = scsi_host_alloc(&nsp_driver_template, sizeof(nsp_hw_data));
1321 if (host == NULL) {
1322 nsp_dbg(NSP_DEBUG_INIT, "host failed");
1323 return NULL;
1324 }
1325
1326 memcpy(host->hostdata, data_b, sizeof(nsp_hw_data));
1327 data = (nsp_hw_data *)host->hostdata;
1328 data->ScsiInfo->host = host;
1329 #ifdef NSP_DEBUG
1330 data->CmdId = 0;
1331 #endif
1332
1333 nsp_dbg(NSP_DEBUG_INIT, "irq=%d,%d", data_b->IrqNumber, ((nsp_hw_data *)host->hostdata)->IrqNumber);
1334
1335 host->unique_id = data->BaseAddress;
1336 host->io_port = data->BaseAddress;
1337 host->n_io_port = data->NumAddress;
1338 host->irq = data->IrqNumber;
1339 host->base = data->MmioAddress;
1340
1341 spin_lock_init(&(data->Lock));
1342
1343 snprintf(data->nspinfo,
1344 sizeof(data->nspinfo),
1345 "NinjaSCSI-3/32Bi Driver $Revision: 1.23 $ IO:0x%04lx-0x%04lx MMIO(virt addr):0x%04lx IRQ:%02d",
1346 host->io_port, host->io_port + host->n_io_port - 1,
1347 host->base,
1348 host->irq);
1349 sht->name = data->nspinfo;
1350
1351 nsp_dbg(NSP_DEBUG_INIT, "end");
1352
1353
1354 return host; /* detect done. */
1355 }
1356
1357 /*----------------------------------------------------------------*/
1358 /* return info string */
1359 /*----------------------------------------------------------------*/
1360 static const char *nsp_info(struct Scsi_Host *shpnt)
1361 {
1362 nsp_hw_data *data = (nsp_hw_data *)shpnt->hostdata;
1363
1364 return data->nspinfo;
1365 }
1366
1367 #undef SPRINTF
1368 #define SPRINTF(args...) \
1369 do { \
1370 if(length > (pos - buffer)) { \
1371 pos += snprintf(pos, length - (pos - buffer) + 1, ## args); \
1372 nsp_dbg(NSP_DEBUG_PROC, "buffer=0x%p pos=0x%p length=%d %d\n", buffer, pos, length, length - (pos - buffer));\
1373 } \
1374 } while(0)
1375
1376 static int nsp_proc_info(struct Scsi_Host *host, char *buffer, char **start,
1377 off_t offset, int length, int inout)
1378 {
1379 int id;
1380 char *pos = buffer;
1381 int thislength;
1382 int speed;
1383 unsigned long flags;
1384 nsp_hw_data *data;
1385 int hostno;
1386
1387 if (inout) {
1388 return -EINVAL;
1389 }
1390
1391 hostno = host->host_no;
1392 data = (nsp_hw_data *)host->hostdata;
1393
1394
1395 SPRINTF("NinjaSCSI status\n\n");
1396 SPRINTF("Driver version: $Revision: 1.23 $\n");
1397 SPRINTF("SCSI host No.: %d\n", hostno);
1398 SPRINTF("IRQ: %d\n", host->irq);
1399 SPRINTF("IO: 0x%lx-0x%lx\n", host->io_port, host->io_port + host->n_io_port - 1);
1400 SPRINTF("MMIO(virtual address): 0x%lx-0x%lx\n", host->base, host->base + data->MmioLength - 1);
1401 SPRINTF("sg_tablesize: %d\n", host->sg_tablesize);
1402
1403 SPRINTF("burst transfer mode: ");
1404 switch (nsp_burst_mode) {
1405 case BURST_IO8:
1406 SPRINTF("io8");
1407 break;
1408 case BURST_IO32:
1409 SPRINTF("io32");
1410 break;
1411 case BURST_MEM32:
1412 SPRINTF("mem32");
1413 break;
1414 default:
1415 SPRINTF("???");
1416 break;
1417 }
1418 SPRINTF("\n");
1419
1420
1421 spin_lock_irqsave(&(data->Lock), flags);
1422 SPRINTF("CurrentSC: 0x%p\n\n", data->CurrentSC);
1423 spin_unlock_irqrestore(&(data->Lock), flags);
1424
1425 SPRINTF("SDTR status\n");
1426 for(id = 0; id < ARRAY_SIZE(data->Sync); id++) {
1427
1428 SPRINTF("id %d: ", id);
1429
1430 if (id == host->this_id) {
1431 SPRINTF("----- NinjaSCSI-3 host adapter\n");
1432 continue;
1433 }
1434
1435 switch(data->Sync[id].SyncNegotiation) {
1436 case SYNC_OK:
1437 SPRINTF(" sync");
1438 break;
1439 case SYNC_NG:
1440 SPRINTF("async");
1441 break;
1442 case SYNC_NOT_YET:
1443 SPRINTF(" none");
1444 break;
1445 default:
1446 SPRINTF("?????");
1447 break;
1448 }
1449
1450 if (data->Sync[id].SyncPeriod != 0) {
1451 speed = 1000000 / (data->Sync[id].SyncPeriod * 4);
1452
1453 SPRINTF(" transfer %d.%dMB/s, offset %d",
1454 speed / 1000,
1455 speed % 1000,
1456 data->Sync[id].SyncOffset
1457 );
1458 }
1459 SPRINTF("\n");
1460 }
1461
1462 thislength = pos - (buffer + offset);
1463
1464 if(thislength < 0) {
1465 *start = NULL;
1466 return 0;
1467 }
1468
1469
1470 thislength = min(thislength, length);
1471 *start = buffer + offset;
1472
1473 return thislength;
1474 }
1475 #undef SPRINTF
1476
1477 /*---------------------------------------------------------------*/
1478 /* error handler */
1479 /*---------------------------------------------------------------*/
1480
1481 /*
1482 static int nsp_eh_abort(struct scsi_cmnd *SCpnt)
1483 {
1484 nsp_dbg(NSP_DEBUG_BUSRESET, "SCpnt=0x%p", SCpnt);
1485
1486 return nsp_eh_bus_reset(SCpnt);
1487 }*/
1488
1489 static int nsp_bus_reset(nsp_hw_data *data)
1490 {
1491 unsigned int base = data->BaseAddress;
1492 int i;
1493
1494 nsp_write(base, IRQCONTROL, IRQCONTROL_ALLMASK);
1495
1496 nsp_index_write(base, SCSIBUSCTRL, SCSI_RST);
1497 mdelay(100); /* 100ms */
1498 nsp_index_write(base, SCSIBUSCTRL, 0);
1499 for(i = 0; i < 5; i++) {
1500 nsp_index_read(base, IRQPHASESENCE); /* dummy read */
1501 }
1502
1503 nsphw_init_sync(data);
1504
1505 nsp_write(base, IRQCONTROL, IRQCONTROL_ALLCLEAR);
1506
1507 return SUCCESS;
1508 }
1509
1510 static int nsp_eh_bus_reset(struct scsi_cmnd *SCpnt)
1511 {
1512 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata;
1513
1514 nsp_dbg(NSP_DEBUG_BUSRESET, "SCpnt=0x%p", SCpnt);
1515
1516 return nsp_bus_reset(data);
1517 }
1518
1519 static int nsp_eh_host_reset(struct scsi_cmnd *SCpnt)
1520 {
1521 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata;
1522
1523 nsp_dbg(NSP_DEBUG_BUSRESET, "in");
1524
1525 nsphw_init(data);
1526
1527 return SUCCESS;
1528 }
1529
1530
1531 /**********************************************************************
1532 PCMCIA functions
1533 **********************************************************************/
1534
1535 static int nsp_cs_probe(struct pcmcia_device *link)
1536 {
1537 scsi_info_t *info;
1538 nsp_hw_data *data = &nsp_data_base;
1539 int ret;
1540
1541 nsp_dbg(NSP_DEBUG_INIT, "in");
1542
1543 /* Create new SCSI device */
1544 info = kzalloc(sizeof(*info), GFP_KERNEL);
1545 if (info == NULL) { return -ENOMEM; }
1546 info->p_dev = link;
1547 link->priv = info;
1548 data->ScsiInfo = info;
1549
1550 nsp_dbg(NSP_DEBUG_INIT, "info=0x%p", info);
1551
1552 ret = nsp_cs_config(link);
1553
1554 nsp_dbg(NSP_DEBUG_INIT, "link=0x%p", link);
1555 return ret;
1556 } /* nsp_cs_attach */
1557
1558
1559 static void nsp_cs_detach(struct pcmcia_device *link)
1560 {
1561 nsp_dbg(NSP_DEBUG_INIT, "in, link=0x%p", link);
1562
1563 ((scsi_info_t *)link->priv)->stop = 1;
1564 nsp_cs_release(link);
1565
1566 kfree(link->priv);
1567 link->priv = NULL;
1568 } /* nsp_cs_detach */
1569
1570
1571 static int nsp_cs_config_check(struct pcmcia_device *p_dev, void *priv_data)
1572 {
1573 nsp_hw_data *data = priv_data;
1574
1575 if (p_dev->config_index == 0)
1576 return -ENODEV;
1577
1578 /* This reserves IO space but doesn't actually enable it */
1579 if (pcmcia_request_io(p_dev) != 0)
1580 goto next_entry;
1581
1582 if (resource_size(p_dev->resource[2])) {
1583 p_dev->resource[2]->flags |= (WIN_DATA_WIDTH_16 |
1584 WIN_MEMORY_TYPE_CM |
1585 WIN_ENABLE);
1586 if (p_dev->resource[2]->end < 0x1000)
1587 p_dev->resource[2]->end = 0x1000;
1588 if (pcmcia_request_window(p_dev, p_dev->resource[2], 0) != 0)
1589 goto next_entry;
1590 if (pcmcia_map_mem_page(p_dev, p_dev->resource[2],
1591 p_dev->card_addr) != 0)
1592 goto next_entry;
1593
1594 data->MmioAddress = (unsigned long)
1595 ioremap_nocache(p_dev->resource[2]->start,
1596 resource_size(p_dev->resource[2]));
1597 data->MmioLength = resource_size(p_dev->resource[2]);
1598 }
1599 /* If we got this far, we're cool! */
1600 return 0;
1601
1602 next_entry:
1603 nsp_dbg(NSP_DEBUG_INIT, "next");
1604 pcmcia_disable_device(p_dev);
1605 return -ENODEV;
1606 }
1607
1608 static int nsp_cs_config(struct pcmcia_device *link)
1609 {
1610 int ret;
1611 scsi_info_t *info = link->priv;
1612 struct Scsi_Host *host;
1613 nsp_hw_data *data = &nsp_data_base;
1614
1615 nsp_dbg(NSP_DEBUG_INIT, "in");
1616
1617 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_CHECK_VCC |
1618 CONF_AUTO_SET_VPP | CONF_AUTO_AUDIO | CONF_AUTO_SET_IOMEM |
1619 CONF_AUTO_SET_IO;
1620
1621 ret = pcmcia_loop_config(link, nsp_cs_config_check, data);
1622 if (ret)
1623 goto cs_failed;
1624
1625 if (pcmcia_request_irq(link, nspintr))
1626 goto cs_failed;
1627
1628 ret = pcmcia_enable_device(link);
1629 if (ret)
1630 goto cs_failed;
1631
1632 if (free_ports) {
1633 if (link->resource[0]) {
1634 release_region(link->resource[0]->start,
1635 resource_size(link->resource[0]));
1636 }
1637 if (link->resource[1]) {
1638 release_region(link->resource[1]->start,
1639 resource_size(link->resource[1]));
1640 }
1641 }
1642
1643 /* Set port and IRQ */
1644 data->BaseAddress = link->resource[0]->start;
1645 data->NumAddress = resource_size(link->resource[0]);
1646 data->IrqNumber = link->irq;
1647
1648 nsp_dbg(NSP_DEBUG_INIT, "I/O[0x%x+0x%x] IRQ %d",
1649 data->BaseAddress, data->NumAddress, data->IrqNumber);
1650
1651 if(nsphw_init(data) == FALSE) {
1652 goto cs_failed;
1653 }
1654
1655 host = nsp_detect(&nsp_driver_template);
1656
1657 if (host == NULL) {
1658 nsp_dbg(NSP_DEBUG_INIT, "detect failed");
1659 goto cs_failed;
1660 }
1661
1662
1663 ret = scsi_add_host (host, NULL);
1664 if (ret)
1665 goto cs_failed;
1666
1667 scsi_scan_host(host);
1668
1669 info->host = host;
1670
1671 return 0;
1672
1673 cs_failed:
1674 nsp_dbg(NSP_DEBUG_INIT, "config fail");
1675 nsp_cs_release(link);
1676
1677 return -ENODEV;
1678 } /* nsp_cs_config */
1679
1680
1681 static void nsp_cs_release(struct pcmcia_device *link)
1682 {
1683 scsi_info_t *info = link->priv;
1684 nsp_hw_data *data = NULL;
1685
1686 if (info->host == NULL) {
1687 nsp_msg(KERN_DEBUG, "unexpected card release call.");
1688 } else {
1689 data = (nsp_hw_data *)info->host->hostdata;
1690 }
1691
1692 nsp_dbg(NSP_DEBUG_INIT, "link=0x%p", link);
1693
1694 /* Unlink the device chain */
1695 if (info->host != NULL) {
1696 scsi_remove_host(info->host);
1697 }
1698
1699 if (resource_size(link->resource[2])) {
1700 if (data != NULL) {
1701 iounmap((void *)(data->MmioAddress));
1702 }
1703 }
1704 pcmcia_disable_device(link);
1705
1706 if (info->host != NULL) {
1707 scsi_host_put(info->host);
1708 }
1709 } /* nsp_cs_release */
1710
1711 static int nsp_cs_suspend(struct pcmcia_device *link)
1712 {
1713 scsi_info_t *info = link->priv;
1714 nsp_hw_data *data;
1715
1716 nsp_dbg(NSP_DEBUG_INIT, "event: suspend");
1717
1718 if (info->host != NULL) {
1719 nsp_msg(KERN_INFO, "clear SDTR status");
1720
1721 data = (nsp_hw_data *)info->host->hostdata;
1722
1723 nsphw_init_sync(data);
1724 }
1725
1726 info->stop = 1;
1727
1728 return 0;
1729 }
1730
1731 static int nsp_cs_resume(struct pcmcia_device *link)
1732 {
1733 scsi_info_t *info = link->priv;
1734 nsp_hw_data *data;
1735
1736 nsp_dbg(NSP_DEBUG_INIT, "event: resume");
1737
1738 info->stop = 0;
1739
1740 if (info->host != NULL) {
1741 nsp_msg(KERN_INFO, "reset host and bus");
1742
1743 data = (nsp_hw_data *)info->host->hostdata;
1744
1745 nsphw_init (data);
1746 nsp_bus_reset(data);
1747 }
1748
1749 return 0;
1750 }
1751
1752 /*======================================================================*
1753 * module entry point
1754 *====================================================================*/
1755 static struct pcmcia_device_id nsp_cs_ids[] = {
1756 PCMCIA_DEVICE_PROD_ID123("IO DATA", "CBSC16 ", "1", 0x547e66dc, 0x0d63a3fd, 0x51de003a),
1757 PCMCIA_DEVICE_PROD_ID123("KME ", "SCSI-CARD-001", "1", 0x534c02bc, 0x52008408, 0x51de003a),
1758 PCMCIA_DEVICE_PROD_ID123("KME ", "SCSI-CARD-002", "1", 0x534c02bc, 0xcb09d5b2, 0x51de003a),
1759 PCMCIA_DEVICE_PROD_ID123("KME ", "SCSI-CARD-003", "1", 0x534c02bc, 0xbc0ee524, 0x51de003a),
1760 PCMCIA_DEVICE_PROD_ID123("KME ", "SCSI-CARD-004", "1", 0x534c02bc, 0x226a7087, 0x51de003a),
1761 PCMCIA_DEVICE_PROD_ID123("WBT", "NinjaSCSI-3", "R1.0", 0xc7ba805f, 0xfdc7c97d, 0x6973710e),
1762 PCMCIA_DEVICE_PROD_ID123("WORKBIT", "UltraNinja-16", "1", 0x28191418, 0xb70f4b09, 0x51de003a),
1763 PCMCIA_DEVICE_NULL
1764 };
1765 MODULE_DEVICE_TABLE(pcmcia, nsp_cs_ids);
1766
1767 static struct pcmcia_driver nsp_driver = {
1768 .owner = THIS_MODULE,
1769 .name = "nsp_cs",
1770 .probe = nsp_cs_probe,
1771 .remove = nsp_cs_detach,
1772 .id_table = nsp_cs_ids,
1773 .suspend = nsp_cs_suspend,
1774 .resume = nsp_cs_resume,
1775 };
1776
1777 static int __init nsp_cs_init(void)
1778 {
1779 return pcmcia_register_driver(&nsp_driver);
1780 }
1781
1782 static void __exit nsp_cs_exit(void)
1783 {
1784 pcmcia_unregister_driver(&nsp_driver);
1785 }
1786
1787
1788 module_init(nsp_cs_init)
1789 module_exit(nsp_cs_exit)
1790
1791 /* end */