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Committer: Michael Beasley <mike@snafu.setup>
[mikesnafu-overlay.git] / drivers / scsi / pcmcia / sym53c500_cs.c
blob3454a57147496cddc1d012699fbd8334b8e8e2e8
1 /*
2 * sym53c500_cs.c Bob Tracy (rct@frus.com)
3 *
4 * A rewrite of the pcmcia-cs add-on driver for newer (circa 1997)
5 * New Media Bus Toaster PCMCIA SCSI cards using the Symbios Logic
6 * 53c500 controller: intended for use with 2.6 and later kernels.
7 * The pcmcia-cs add-on version of this driver is not supported
8 * beyond 2.4. It consisted of three files with history/copyright
9 * information as follows:
10 *
11 * SYM53C500.h
12 * Bob Tracy (rct@frus.com)
13 * Original by Tom Corner (tcorner@via.at).
14 * Adapted from NCR53c406a.h which is Copyrighted (C) 1994
15 * Normunds Saumanis (normunds@rx.tech.swh.lv)
16 *
17 * SYM53C500.c
18 * Bob Tracy (rct@frus.com)
19 * Original driver by Tom Corner (tcorner@via.at) was adapted
20 * from NCR53c406a.c which is Copyrighted (C) 1994, 1995, 1996
21 * Normunds Saumanis (normunds@fi.ibm.com)
22 *
23 * sym53c500.c
24 * Bob Tracy (rct@frus.com)
25 * Original by Tom Corner (tcorner@via.at) was adapted from a
26 * driver for the Qlogic SCSI card written by
27 * David Hinds (dhinds@allegro.stanford.edu).
28 *
29 * This program is free software; you can redistribute it and/or modify it
30 * under the terms of the GNU General Public License as published by the
31 * Free Software Foundation; either version 2, or (at your option) any
32 * later version.
33 *
34 * This program is distributed in the hope that it will be useful, but
35 * WITHOUT ANY WARRANTY; without even the implied warranty of
36 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
37 * General Public License for more details.
38 */
39
40 #define SYM53C500_DEBUG 0
41 #define VERBOSE_SYM53C500_DEBUG 0
42
43 /*
44 * Set this to 0 if you encounter kernel lockups while transferring
45 * data in PIO mode. Note this can be changed via "sysfs".
46 */
47 #define USE_FAST_PIO 1
48
49 /* =============== End of user configurable parameters ============== */
50
51 #include <linux/module.h>
52 #include <linux/moduleparam.h>
53 #include <linux/errno.h>
54 #include <linux/init.h>
55 #include <linux/interrupt.h>
56 #include <linux/kernel.h>
57 #include <linux/slab.h>
58 #include <linux/string.h>
59 #include <linux/ioport.h>
60 #include <linux/blkdev.h>
61 #include <linux/spinlock.h>
62 #include <linux/bitops.h>
63
64 #include <asm/io.h>
65 #include <asm/dma.h>
66 #include <asm/irq.h>
67
68 #include <scsi/scsi_ioctl.h>
69 #include <scsi/scsi_cmnd.h>
70 #include <scsi/scsi_device.h>
71 #include <scsi/scsi.h>
72 #include <scsi/scsi_host.h>
73
74 #include <pcmcia/cs_types.h>
75 #include <pcmcia/cs.h>
76 #include <pcmcia/cistpl.h>
77 #include <pcmcia/ds.h>
78 #include <pcmcia/ciscode.h>
79
80 /* ================================================================== */
81
82 #ifdef PCMCIA_DEBUG
83 static int pc_debug = PCMCIA_DEBUG;
84 module_param(pc_debug, int, 0);
85 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
86 static char *version =
87 "sym53c500_cs.c 0.9c 2004/10/27 (Bob Tracy)";
88 #else
89 #define DEBUG(n, args...)
90 #endif
91
92 /* ================================================================== */
93
94 #define SYNC_MODE 0 /* Synchronous transfer mode */
95
96 /* Default configuration */
97 #define C1_IMG 0x07 /* ID=7 */
98 #define C2_IMG 0x48 /* FE SCSI2 */
99 #define C3_IMG 0x20 /* CDB */
100 #define C4_IMG 0x04 /* ANE */
101 #define C5_IMG 0xa4 /* ? changed from b6= AA PI SIE POL */
102 #define C7_IMG 0x80 /* added for SYM53C500 t. corner */
103
104 /* Hardware Registers: offsets from io_port (base) */
105
106 /* Control Register Set 0 */
107 #define TC_LSB 0x00 /* transfer counter lsb */
108 #define TC_MSB 0x01 /* transfer counter msb */
109 #define SCSI_FIFO 0x02 /* scsi fifo register */
110 #define CMD_REG 0x03 /* command register */
111 #define STAT_REG 0x04 /* status register */
112 #define DEST_ID 0x04 /* selection/reselection bus id */
113 #define INT_REG 0x05 /* interrupt status register */
114 #define SRTIMOUT 0x05 /* select/reselect timeout reg */
115 #define SEQ_REG 0x06 /* sequence step register */
116 #define SYNCPRD 0x06 /* synchronous transfer period */
117 #define FIFO_FLAGS 0x07 /* indicates # of bytes in fifo */
118 #define SYNCOFF 0x07 /* synchronous offset register */
119 #define CONFIG1 0x08 /* configuration register */
120 #define CLKCONV 0x09 /* clock conversion register */
121 /* #define TESTREG 0x0A */ /* test mode register */
122 #define CONFIG2 0x0B /* configuration 2 register */
123 #define CONFIG3 0x0C /* configuration 3 register */
124 #define CONFIG4 0x0D /* configuration 4 register */
125 #define TC_HIGH 0x0E /* transfer counter high */
126 /* #define FIFO_BOTTOM 0x0F */ /* reserve FIFO byte register */
127
128 /* Control Register Set 1 */
129 /* #define JUMPER_SENSE 0x00 */ /* jumper sense port reg (r/w) */
130 /* #define SRAM_PTR 0x01 */ /* SRAM address pointer reg (r/w) */
131 /* #define SRAM_DATA 0x02 */ /* SRAM data register (r/w) */
132 #define PIO_FIFO 0x04 /* PIO FIFO registers (r/w) */
133 /* #define PIO_FIFO1 0x05 */ /* */
134 /* #define PIO_FIFO2 0x06 */ /* */
135 /* #define PIO_FIFO3 0x07 */ /* */
136 #define PIO_STATUS 0x08 /* PIO status (r/w) */
137 /* #define ATA_CMD 0x09 */ /* ATA command/status reg (r/w) */
138 /* #define ATA_ERR 0x0A */ /* ATA features/error reg (r/w) */
139 #define PIO_FLAG 0x0B /* PIO flag interrupt enable (r/w) */
140 #define CONFIG5 0x09 /* configuration 5 register */
141 /* #define SIGNATURE 0x0E */ /* signature register (r) */
142 /* #define CONFIG6 0x0F */ /* configuration 6 register (r) */
143 #define CONFIG7 0x0d
144
145 /* select register set 0 */
146 #define REG0(x) (outb(C4_IMG, (x) + CONFIG4))
147 /* select register set 1 */
148 #define REG1(x) outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5)
149
150 #if SYM53C500_DEBUG
151 #define DEB(x) x
152 #else
153 #define DEB(x)
154 #endif
155
156 #if VERBOSE_SYM53C500_DEBUG
157 #define VDEB(x) x
158 #else
159 #define VDEB(x)
160 #endif
161
162 #define LOAD_DMA_COUNT(x, count) \
163 outb(count & 0xff, (x) + TC_LSB); \
164 outb((count >> 8) & 0xff, (x) + TC_MSB); \
165 outb((count >> 16) & 0xff, (x) + TC_HIGH);
166
167 /* Chip commands */
168 #define DMA_OP 0x80
169
170 #define SCSI_NOP 0x00
171 #define FLUSH_FIFO 0x01
172 #define CHIP_RESET 0x02
173 #define SCSI_RESET 0x03
174 #define RESELECT 0x40
175 #define SELECT_NO_ATN 0x41
176 #define SELECT_ATN 0x42
177 #define SELECT_ATN_STOP 0x43
178 #define ENABLE_SEL 0x44
179 #define DISABLE_SEL 0x45
180 #define SELECT_ATN3 0x46
181 #define RESELECT3 0x47
182 #define TRANSFER_INFO 0x10
183 #define INIT_CMD_COMPLETE 0x11
184 #define MSG_ACCEPT 0x12
185 #define TRANSFER_PAD 0x18
186 #define SET_ATN 0x1a
187 #define RESET_ATN 0x1b
188 #define SEND_MSG 0x20
189 #define SEND_STATUS 0x21
190 #define SEND_DATA 0x22
191 #define DISCONN_SEQ 0x23
192 #define TERMINATE_SEQ 0x24
193 #define TARG_CMD_COMPLETE 0x25
194 #define DISCONN 0x27
195 #define RECV_MSG 0x28
196 #define RECV_CMD 0x29
197 #define RECV_DATA 0x2a
198 #define RECV_CMD_SEQ 0x2b
199 #define TARGET_ABORT_DMA 0x04
200
201 /* ================================================================== */
202
203 struct scsi_info_t {
204 struct pcmcia_device *p_dev;
205 dev_node_t node;
206 struct Scsi_Host *host;
207 unsigned short manf_id;
208 };
209
210 /*
211 * Repository for per-instance host data.
212 */
213 struct sym53c500_data {
214 struct scsi_cmnd *current_SC;
215 int fast_pio;
216 };
217
218 enum Phase {
219 idle,
220 data_out,
221 data_in,
222 command_ph,
223 status_ph,
224 message_out,
225 message_in
226 };
227
228 /* ================================================================== */
229
230 static void
231 chip_init(int io_port)
232 {
233 REG1(io_port);
234 outb(0x01, io_port + PIO_STATUS);
235 outb(0x00, io_port + PIO_FLAG);
236
237 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
238 outb(C3_IMG, io_port + CONFIG3);
239 outb(C2_IMG, io_port + CONFIG2);
240 outb(C1_IMG, io_port + CONFIG1);
241
242 outb(0x05, io_port + CLKCONV); /* clock conversion factor */
243 outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */
244 outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */
245 outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */
246 }
247
248 static void
249 SYM53C500_int_host_reset(int io_port)
250 {
251 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
252 outb(CHIP_RESET, io_port + CMD_REG);
253 outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */
254 outb(SCSI_RESET, io_port + CMD_REG);
255 chip_init(io_port);
256 }
257
258 static __inline__ int
259 SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
260 {
261 int i;
262 int len; /* current scsi fifo size */
263
264 REG1(base);
265 while (reqlen) {
266 i = inb(base + PIO_STATUS);
267 /* VDEB(printk("pio_status=%x\n", i)); */
268 if (i & 0x80)
269 return 0;
270
271 switch (i & 0x1e) {
272 default:
273 case 0x10: /* fifo empty */
274 len = 0;
275 break;
276 case 0x0:
277 len = 1;
278 break;
279 case 0x8: /* fifo 1/3 full */
280 len = 42;
281 break;
282 case 0xc: /* fifo 2/3 full */
283 len = 84;
284 break;
285 case 0xe: /* fifo full */
286 len = 128;
287 break;
288 }
289
290 if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */
291 return 0;
292 }
293
294 if (len) {
295 if (len > reqlen)
296 len = reqlen;
297
298 if (fast_pio && len > 3) {
299 insl(base + PIO_FIFO, request, len >> 2);
300 request += len & 0xfc;
301 reqlen -= len & 0xfc;
302 } else {
303 while (len--) {
304 *request++ = inb(base + PIO_FIFO);
305 reqlen--;
306 }
307 }
308 }
309 }
310 return 0;
311 }
312
313 static __inline__ int
314 SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
315 {
316 int i = 0;
317 int len; /* current scsi fifo size */
318
319 REG1(base);
320 while (reqlen && !(i & 0x40)) {
321 i = inb(base + PIO_STATUS);
322 /* VDEB(printk("pio_status=%x\n", i)); */
323 if (i & 0x80) /* error */
324 return 0;
325
326 switch (i & 0x1e) {
327 case 0x10:
328 len = 128;
329 break;
330 case 0x0:
331 len = 84;
332 break;
333 case 0x8:
334 len = 42;
335 break;
336 case 0xc:
337 len = 1;
338 break;
339 default:
340 case 0xe:
341 len = 0;
342 break;
343 }
344
345 if (len) {
346 if (len > reqlen)
347 len = reqlen;
348
349 if (fast_pio && len > 3) {
350 outsl(base + PIO_FIFO, request, len >> 2);
351 request += len & 0xfc;
352 reqlen -= len & 0xfc;
353 } else {
354 while (len--) {
355 outb(*request++, base + PIO_FIFO);
356 reqlen--;
357 }
358 }
359 }
360 }
361 return 0;
362 }
363
364 static irqreturn_t
365 SYM53C500_intr(int irq, void *dev_id)
366 {
367 unsigned long flags;
368 struct Scsi_Host *dev = dev_id;
369 DEB(unsigned char fifo_size;)
370 DEB(unsigned char seq_reg;)
371 unsigned char status, int_reg;
372 unsigned char pio_status;
373 int port_base = dev->io_port;
374 struct sym53c500_data *data =
375 (struct sym53c500_data *)dev->hostdata;
376 struct scsi_cmnd *curSC = data->current_SC;
377 int fast_pio = data->fast_pio;
378
379 spin_lock_irqsave(dev->host_lock, flags);
380
381 VDEB(printk("SYM53C500_intr called\n"));
382
383 REG1(port_base);
384 pio_status = inb(port_base + PIO_STATUS);
385 REG0(port_base);
386 status = inb(port_base + STAT_REG);
387 DEB(seq_reg = inb(port_base + SEQ_REG));
388 int_reg = inb(port_base + INT_REG);
389 DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f);
390
391 #if SYM53C500_DEBUG
392 printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x",
393 status, seq_reg, int_reg, fifo_size);
394 printk(", pio=%02x\n", pio_status);
395 #endif /* SYM53C500_DEBUG */
396
397 if (int_reg & 0x80) { /* SCSI reset intr */
398 DEB(printk("SYM53C500: reset intr received\n"));
399 curSC->result = DID_RESET << 16;
400 goto idle_out;
401 }
402
403 if (pio_status & 0x80) {
404 printk("SYM53C500: Warning: PIO error!\n");
405 curSC->result = DID_ERROR << 16;
406 goto idle_out;
407 }
408
409 if (status & 0x20) { /* Parity error */
410 printk("SYM53C500: Warning: parity error!\n");
411 curSC->result = DID_PARITY << 16;
412 goto idle_out;
413 }
414
415 if (status & 0x40) { /* Gross error */
416 printk("SYM53C500: Warning: gross error!\n");
417 curSC->result = DID_ERROR << 16;
418 goto idle_out;
419 }
420
421 if (int_reg & 0x20) { /* Disconnect */
422 DEB(printk("SYM53C500: disconnect intr received\n"));
423 if (curSC->SCp.phase != message_in) { /* Unexpected disconnect */
424 curSC->result = DID_NO_CONNECT << 16;
425 } else { /* Command complete, return status and message */
426 curSC->result = (curSC->SCp.Status & 0xff)
427 | ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16);
428 }
429 goto idle_out;
430 }
431
432 switch (status & 0x07) { /* scsi phase */
433 case 0x00: /* DATA-OUT */
434 if (int_reg & 0x10) { /* Target requesting info transfer */
435 struct scatterlist *sg;
436 int i;
437
438 curSC->SCp.phase = data_out;
439 VDEB(printk("SYM53C500: Data-Out phase\n"));
440 outb(FLUSH_FIFO, port_base + CMD_REG);
441 LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */
442 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
443
444 scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {
445 SYM53C500_pio_write(fast_pio, port_base,
446 sg_virt(sg), sg->length);
447 }
448 REG0(port_base);
449 }
450 break;
451
452 case 0x01: /* DATA-IN */
453 if (int_reg & 0x10) { /* Target requesting info transfer */
454 struct scatterlist *sg;
455 int i;
456
457 curSC->SCp.phase = data_in;
458 VDEB(printk("SYM53C500: Data-In phase\n"));
459 outb(FLUSH_FIFO, port_base + CMD_REG);
460 LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */
461 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
462
463 scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {
464 SYM53C500_pio_read(fast_pio, port_base,
465 sg_virt(sg), sg->length);
466 }
467 REG0(port_base);
468 }
469 break;
470
471 case 0x02: /* COMMAND */
472 curSC->SCp.phase = command_ph;
473 printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n");
474 break;
475
476 case 0x03: /* STATUS */
477 curSC->SCp.phase = status_ph;
478 VDEB(printk("SYM53C500: Status phase\n"));
479 outb(FLUSH_FIFO, port_base + CMD_REG);
480 outb(INIT_CMD_COMPLETE, port_base + CMD_REG);
481 break;
482
483 case 0x04: /* Reserved */
484 case 0x05: /* Reserved */
485 printk("SYM53C500: WARNING: Reserved phase!!!\n");
486 break;
487
488 case 0x06: /* MESSAGE-OUT */
489 DEB(printk("SYM53C500: Message-Out phase\n"));
490 curSC->SCp.phase = message_out;
491 outb(SET_ATN, port_base + CMD_REG); /* Reject the message */
492 outb(MSG_ACCEPT, port_base + CMD_REG);
493 break;
494
495 case 0x07: /* MESSAGE-IN */
496 VDEB(printk("SYM53C500: Message-In phase\n"));
497 curSC->SCp.phase = message_in;
498
499 curSC->SCp.Status = inb(port_base + SCSI_FIFO);
500 curSC->SCp.Message = inb(port_base + SCSI_FIFO);
501
502 VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f));
503 DEB(printk("Status = %02x Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message));
504
505 if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) {
506 outb(SET_ATN, port_base + CMD_REG); /* Reject message */
507 DEB(printk("Discarding SAVE_POINTERS message\n"));
508 }
509 outb(MSG_ACCEPT, port_base + CMD_REG);
510 break;
511 }
512 out:
513 spin_unlock_irqrestore(dev->host_lock, flags);
514 return IRQ_HANDLED;
515
516 idle_out:
517 curSC->SCp.phase = idle;
518 curSC->scsi_done(curSC);
519 goto out;
520 }
521
522 static void
523 SYM53C500_release(struct pcmcia_device *link)
524 {
525 struct scsi_info_t *info = link->priv;
526 struct Scsi_Host *shost = info->host;
527
528 DEBUG(0, "SYM53C500_release(0x%p)\n", link);
529
530 /*
531 * Do this before releasing/freeing resources.
532 */
533 scsi_remove_host(shost);
534
535 /*
536 * Interrupts getting hosed on card removal. Try
537 * the following code, mostly from qlogicfas.c.
538 */
539 if (shost->irq)
540 free_irq(shost->irq, shost);
541 if (shost->io_port && shost->n_io_port)
542 release_region(shost->io_port, shost->n_io_port);
543
544 pcmcia_disable_device(link);
545
546 scsi_host_put(shost);
547 } /* SYM53C500_release */
548
549 static const char*
550 SYM53C500_info(struct Scsi_Host *SChost)
551 {
552 static char info_msg[256];
553 struct sym53c500_data *data =
554 (struct sym53c500_data *)SChost->hostdata;
555
556 DEB(printk("SYM53C500_info called\n"));
557 (void)snprintf(info_msg, sizeof(info_msg),
558 "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.",
559 SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow");
560 return (info_msg);
561 }
562
563 static int
564 SYM53C500_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
565 {
566 int i;
567 int port_base = SCpnt->device->host->io_port;
568 struct sym53c500_data *data =
569 (struct sym53c500_data *)SCpnt->device->host->hostdata;
570
571 VDEB(printk("SYM53C500_queue called\n"));
572
573 DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n",
574 SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id,
575 SCpnt->device->lun, scsi_bufflen(SCpnt)));
576
577 VDEB(for (i = 0; i < SCpnt->cmd_len; i++)
578 printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i]));
579 VDEB(printk("\n"));
580
581 data->current_SC = SCpnt;
582 data->current_SC->scsi_done = done;
583 data->current_SC->SCp.phase = command_ph;
584 data->current_SC->SCp.Status = 0;
585 data->current_SC->SCp.Message = 0;
586
587 /* We are locked here already by the mid layer */
588 REG0(port_base);
589 outb(scmd_id(SCpnt), port_base + DEST_ID); /* set destination */
590 outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */
591
592 for (i = 0; i < SCpnt->cmd_len; i++) {
593 outb(SCpnt->cmnd[i], port_base + SCSI_FIFO);
594 }
595 outb(SELECT_NO_ATN, port_base + CMD_REG);
596
597 return 0;
598 }
599
600 static int
601 SYM53C500_host_reset(struct scsi_cmnd *SCpnt)
602 {
603 int port_base = SCpnt->device->host->io_port;
604
605 DEB(printk("SYM53C500_host_reset called\n"));
606 spin_lock_irq(SCpnt->device->host->host_lock);
607 SYM53C500_int_host_reset(port_base);
608 spin_unlock_irq(SCpnt->device->host->host_lock);
609
610 return SUCCESS;
611 }
612
613 static int
614 SYM53C500_biosparm(struct scsi_device *disk,
615 struct block_device *dev,
616 sector_t capacity, int *info_array)
617 {
618 int size;
619
620 DEB(printk("SYM53C500_biosparm called\n"));
621
622 size = capacity;
623 info_array[0] = 64; /* heads */
624 info_array[1] = 32; /* sectors */
625 info_array[2] = size >> 11; /* cylinders */
626 if (info_array[2] > 1024) { /* big disk */
627 info_array[0] = 255;
628 info_array[1] = 63;
629 info_array[2] = size / (255 * 63);
630 }
631 return 0;
632 }
633
634 static ssize_t
635 SYM53C500_show_pio(struct class_device *cdev, char *buf)
636 {
637 struct Scsi_Host *SHp = class_to_shost(cdev);
638 struct sym53c500_data *data =
639 (struct sym53c500_data *)SHp->hostdata;
640
641 return snprintf(buf, 4, "%d\n", data->fast_pio);
642 }
643
644 static ssize_t
645 SYM53C500_store_pio(struct class_device *cdev, const char *buf, size_t count)
646 {
647 int pio;
648 struct Scsi_Host *SHp = class_to_shost(cdev);
649 struct sym53c500_data *data =
650 (struct sym53c500_data *)SHp->hostdata;
651
652 pio = simple_strtoul(buf, NULL, 0);
653 if (pio == 0 || pio == 1) {
654 data->fast_pio = pio;
655 return count;
656 }
657 else
658 return -EINVAL;
659 }
660
661 /*
662 * SCSI HBA device attributes we want to
663 * make available via sysfs.
664 */
665 static struct class_device_attribute SYM53C500_pio_attr = {
666 .attr = {
667 .name = "fast_pio",
668 .mode = (S_IRUGO | S_IWUSR),
669 },
670 .show = SYM53C500_show_pio,
671 .store = SYM53C500_store_pio,
672 };
673
674 static struct class_device_attribute *SYM53C500_shost_attrs[] = {
675 &SYM53C500_pio_attr,
676 NULL,
677 };
678
679 /*
680 * scsi_host_template initializer
681 */
682 static struct scsi_host_template sym53c500_driver_template = {
683 .module = THIS_MODULE,
684 .name = "SYM53C500",
685 .info = SYM53C500_info,
686 .queuecommand = SYM53C500_queue,
687 .eh_host_reset_handler = SYM53C500_host_reset,
688 .bios_param = SYM53C500_biosparm,
689 .proc_name = "SYM53C500",
690 .can_queue = 1,
691 .this_id = 7,
692 .sg_tablesize = 32,
693 .cmd_per_lun = 1,
694 .use_clustering = ENABLE_CLUSTERING,
695 .shost_attrs = SYM53C500_shost_attrs
696 };
697
698 #define CS_CHECK(fn, ret) \
699 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
700
701 static int
702 SYM53C500_config(struct pcmcia_device *link)
703 {
704 struct scsi_info_t *info = link->priv;
705 tuple_t tuple;
706 cisparse_t parse;
707 int i, last_ret, last_fn;
708 int irq_level, port_base;
709 unsigned short tuple_data[32];
710 struct Scsi_Host *host;
711 struct scsi_host_template *tpnt = &sym53c500_driver_template;
712 struct sym53c500_data *data;
713
714 DEBUG(0, "SYM53C500_config(0x%p)\n", link);
715
716 info->manf_id = link->manf_id;
717
718 tuple.TupleData = (cisdata_t *)tuple_data;
719 tuple.TupleDataMax = 64;
720 tuple.TupleOffset = 0;
721
722 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
723 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
724 while (1) {
725 if (pcmcia_get_tuple_data(link, &tuple) != 0 ||
726 pcmcia_parse_tuple(link, &tuple, &parse) != 0)
727 goto next_entry;
728 link->conf.ConfigIndex = parse.cftable_entry.index;
729 link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
730 link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
731
732 if (link->io.BasePort1 != 0) {
733 i = pcmcia_request_io(link, &link->io);
734 if (i == CS_SUCCESS)
735 break;
736 }
737 next_entry:
738 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(link, &tuple));
739 }
740
741 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
742 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
743
744 /*
745 * That's the trouble with copying liberally from another driver.
746 * Some things probably aren't relevant, and I suspect this entire
747 * section dealing with manufacturer IDs can be scrapped. --rct
748 */
749 if ((info->manf_id == MANFID_MACNICA) ||
750 (info->manf_id == MANFID_PIONEER) ||
751 (info->manf_id == 0x0098)) {
752 /* set ATAcmd */
753 outb(0xb4, link->io.BasePort1 + 0xd);
754 outb(0x24, link->io.BasePort1 + 0x9);
755 outb(0x04, link->io.BasePort1 + 0xd);
756 }
757
758 /*
759 * irq_level == 0 implies tpnt->can_queue == 0, which
760 * is not supported in 2.6. Thus, only irq_level > 0
761 * will be allowed.
762 *
763 * Possible port_base values are as follows:
764 *
765 * 0x130, 0x230, 0x280, 0x290,
766 * 0x320, 0x330, 0x340, 0x350
767 */
768 port_base = link->io.BasePort1;
769 irq_level = link->irq.AssignedIRQ;
770
771 DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n",
772 port_base, irq_level, USE_FAST_PIO);)
773
774 chip_init(port_base);
775
776 host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data));
777 if (!host) {
778 printk("SYM53C500: Unable to register host, giving up.\n");
779 goto err_release;
780 }
781
782 data = (struct sym53c500_data *)host->hostdata;
783
784 if (irq_level > 0) {
785 if (request_irq(irq_level, SYM53C500_intr, IRQF_SHARED, "SYM53C500", host)) {
786 printk("SYM53C500: unable to allocate IRQ %d\n", irq_level);
787 goto err_free_scsi;
788 }
789 DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level));
790 } else if (irq_level == 0) {
791 DEB(printk("SYM53C500: No interrupts detected\n"));
792 goto err_free_scsi;
793 } else {
794 DEB(printk("SYM53C500: Shouldn't get here!\n"));
795 goto err_free_scsi;
796 }
797
798 host->unique_id = port_base;
799 host->irq = irq_level;
800 host->io_port = port_base;
801 host->n_io_port = 0x10;
802 host->dma_channel = -1;
803
804 /*
805 * Note fast_pio is set to USE_FAST_PIO by
806 * default, but can be changed via "sysfs".
807 */
808 data->fast_pio = USE_FAST_PIO;
809
810 sprintf(info->node.dev_name, "scsi%d", host->host_no);
811 link->dev_node = &info->node;
812 info->host = host;
813
814 if (scsi_add_host(host, NULL))
815 goto err_free_irq;
816
817 scsi_scan_host(host);
818
819 return 0;
820
821 err_free_irq:
822 free_irq(irq_level, host);
823 err_free_scsi:
824 scsi_host_put(host);
825 err_release:
826 release_region(port_base, 0x10);
827 printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n");
828 return -ENODEV;
829
830 cs_failed:
831 cs_error(link, last_fn, last_ret);
832 SYM53C500_release(link);
833 return -ENODEV;
834 } /* SYM53C500_config */
835
836 static int sym53c500_resume(struct pcmcia_device *link)
837 {
838 struct scsi_info_t *info = link->priv;
839
840 /* See earlier comment about manufacturer IDs. */
841 if ((info->manf_id == MANFID_MACNICA) ||
842 (info->manf_id == MANFID_PIONEER) ||
843 (info->manf_id == 0x0098)) {
844 outb(0x80, link->io.BasePort1 + 0xd);
845 outb(0x24, link->io.BasePort1 + 0x9);
846 outb(0x04, link->io.BasePort1 + 0xd);
847 }
848 /*
849 * If things don't work after a "resume",
850 * this is a good place to start looking.
851 */
852 SYM53C500_int_host_reset(link->io.BasePort1);
853
854 return 0;
855 }
856
857 static void
858 SYM53C500_detach(struct pcmcia_device *link)
859 {
860 DEBUG(0, "SYM53C500_detach(0x%p)\n", link);
861
862 SYM53C500_release(link);
863
864 kfree(link->priv);
865 link->priv = NULL;
866 } /* SYM53C500_detach */
867
868 static int
869 SYM53C500_probe(struct pcmcia_device *link)
870 {
871 struct scsi_info_t *info;
872
873 DEBUG(0, "SYM53C500_attach()\n");
874
875 /* Create new SCSI device */
876 info = kzalloc(sizeof(*info), GFP_KERNEL);
877 if (!info)
878 return -ENOMEM;
879 info->p_dev = link;
880 link->priv = info;
881 link->io.NumPorts1 = 16;
882 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
883 link->io.IOAddrLines = 10;
884 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
885 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
886 link->conf.Attributes = CONF_ENABLE_IRQ;
887 link->conf.IntType = INT_MEMORY_AND_IO;
888
889 return SYM53C500_config(link);
890 } /* SYM53C500_attach */
891
892 MODULE_AUTHOR("Bob Tracy <rct@frus.com>");
893 MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver");
894 MODULE_LICENSE("GPL");
895
896 static struct pcmcia_device_id sym53c500_ids[] = {
897 PCMCIA_DEVICE_PROD_ID12("BASICS by New Media Corporation", "SCSI Sym53C500", 0x23c78a9d, 0x0099e7f7),
898 PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "SCSI Bus Toaster Sym53C500", 0x085a850b, 0x45432eb8),
899 PCMCIA_DEVICE_PROD_ID2("SCSI9000", 0x21648f44),
900 PCMCIA_DEVICE_NULL,
901 };
902 MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids);
903
904 static struct pcmcia_driver sym53c500_cs_driver = {
905 .owner = THIS_MODULE,
906 .drv = {
907 .name = "sym53c500_cs",
908 },
909 .probe = SYM53C500_probe,
910 .remove = SYM53C500_detach,
911 .id_table = sym53c500_ids,
912 .resume = sym53c500_resume,
913 };
914
915 static int __init
916 init_sym53c500_cs(void)
917 {
918 return pcmcia_register_driver(&sym53c500_cs_driver);
919 }
920
921 static void __exit
922 exit_sym53c500_cs(void)
923 {
924 pcmcia_unregister_driver(&sym53c500_cs_driver);
925 }
926
927 module_init(init_sym53c500_cs);
928 module_exit(exit_sym53c500_cs);
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