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[CONNECTOR]: Initialize subsystem earlier.
[linux-2.6/verdex.git] / drivers / scsi / pcmcia / sym53c500_cs.c
blob9f59827707f0c7e6bd01d55f1642d4d82007707c
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/sched.h>
58 #include <linux/slab.h>
59 #include <linux/string.h>
60 #include <linux/ioport.h>
61 #include <linux/blkdev.h>
62 #include <linux/spinlock.h>
63 #include <linux/bitops.h>
64
65 #include <asm/io.h>
66 #include <asm/dma.h>
67 #include <asm/irq.h>
68
69 #include <scsi/scsi_ioctl.h>
70 #include <scsi/scsi_cmnd.h>
71 #include <scsi/scsi_device.h>
72 #include <scsi/scsi.h>
73 #include <scsi/scsi_host.h>
74
75 #include <pcmcia/cs_types.h>
76 #include <pcmcia/cs.h>
77 #include <pcmcia/cistpl.h>
78 #include <pcmcia/ds.h>
79 #include <pcmcia/ciscode.h>
80
81 /* ================================================================== */
82
83 #ifdef PCMCIA_DEBUG
84 static int pc_debug = PCMCIA_DEBUG;
85 module_param(pc_debug, int, 0);
86 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
87 static char *version =
88 "sym53c500_cs.c 0.9c 2004/10/27 (Bob Tracy)";
89 #else
90 #define DEBUG(n, args...)
91 #endif
92
93 /* ================================================================== */
94
95 #define SYNC_MODE 0 /* Synchronous transfer mode */
96
97 /* Default configuration */
98 #define C1_IMG 0x07 /* ID=7 */
99 #define C2_IMG 0x48 /* FE SCSI2 */
100 #define C3_IMG 0x20 /* CDB */
101 #define C4_IMG 0x04 /* ANE */
102 #define C5_IMG 0xa4 /* ? changed from b6= AA PI SIE POL */
103 #define C7_IMG 0x80 /* added for SYM53C500 t. corner */
104
105 /* Hardware Registers: offsets from io_port (base) */
106
107 /* Control Register Set 0 */
108 #define TC_LSB 0x00 /* transfer counter lsb */
109 #define TC_MSB 0x01 /* transfer counter msb */
110 #define SCSI_FIFO 0x02 /* scsi fifo register */
111 #define CMD_REG 0x03 /* command register */
112 #define STAT_REG 0x04 /* status register */
113 #define DEST_ID 0x04 /* selection/reselection bus id */
114 #define INT_REG 0x05 /* interrupt status register */
115 #define SRTIMOUT 0x05 /* select/reselect timeout reg */
116 #define SEQ_REG 0x06 /* sequence step register */
117 #define SYNCPRD 0x06 /* synchronous transfer period */
118 #define FIFO_FLAGS 0x07 /* indicates # of bytes in fifo */
119 #define SYNCOFF 0x07 /* synchronous offset register */
120 #define CONFIG1 0x08 /* configuration register */
121 #define CLKCONV 0x09 /* clock conversion register */
122 /* #define TESTREG 0x0A */ /* test mode register */
123 #define CONFIG2 0x0B /* configuration 2 register */
124 #define CONFIG3 0x0C /* configuration 3 register */
125 #define CONFIG4 0x0D /* configuration 4 register */
126 #define TC_HIGH 0x0E /* transfer counter high */
127 /* #define FIFO_BOTTOM 0x0F */ /* reserve FIFO byte register */
128
129 /* Control Register Set 1 */
130 /* #define JUMPER_SENSE 0x00 */ /* jumper sense port reg (r/w) */
131 /* #define SRAM_PTR 0x01 */ /* SRAM address pointer reg (r/w) */
132 /* #define SRAM_DATA 0x02 */ /* SRAM data register (r/w) */
133 #define PIO_FIFO 0x04 /* PIO FIFO registers (r/w) */
134 /* #define PIO_FIFO1 0x05 */ /* */
135 /* #define PIO_FIFO2 0x06 */ /* */
136 /* #define PIO_FIFO3 0x07 */ /* */
137 #define PIO_STATUS 0x08 /* PIO status (r/w) */
138 /* #define ATA_CMD 0x09 */ /* ATA command/status reg (r/w) */
139 /* #define ATA_ERR 0x0A */ /* ATA features/error reg (r/w) */
140 #define PIO_FLAG 0x0B /* PIO flag interrupt enable (r/w) */
141 #define CONFIG5 0x09 /* configuration 5 register */
142 /* #define SIGNATURE 0x0E */ /* signature register (r) */
143 /* #define CONFIG6 0x0F */ /* configuration 6 register (r) */
144 #define CONFIG7 0x0d
145
146 /* select register set 0 */
147 #define REG0(x) (outb(C4_IMG, (x) + CONFIG4))
148 /* select register set 1 */
149 #define REG1(x) outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5)
150
151 #if SYM53C500_DEBUG
152 #define DEB(x) x
153 #else
154 #define DEB(x)
155 #endif
156
157 #if VERBOSE_SYM53C500_DEBUG
158 #define VDEB(x) x
159 #else
160 #define VDEB(x)
161 #endif
162
163 #define LOAD_DMA_COUNT(x, count) \
164 outb(count & 0xff, (x) + TC_LSB); \
165 outb((count >> 8) & 0xff, (x) + TC_MSB); \
166 outb((count >> 16) & 0xff, (x) + TC_HIGH);
167
168 /* Chip commands */
169 #define DMA_OP 0x80
170
171 #define SCSI_NOP 0x00
172 #define FLUSH_FIFO 0x01
173 #define CHIP_RESET 0x02
174 #define SCSI_RESET 0x03
175 #define RESELECT 0x40
176 #define SELECT_NO_ATN 0x41
177 #define SELECT_ATN 0x42
178 #define SELECT_ATN_STOP 0x43
179 #define ENABLE_SEL 0x44
180 #define DISABLE_SEL 0x45
181 #define SELECT_ATN3 0x46
182 #define RESELECT3 0x47
183 #define TRANSFER_INFO 0x10
184 #define INIT_CMD_COMPLETE 0x11
185 #define MSG_ACCEPT 0x12
186 #define TRANSFER_PAD 0x18
187 #define SET_ATN 0x1a
188 #define RESET_ATN 0x1b
189 #define SEND_MSG 0x20
190 #define SEND_STATUS 0x21
191 #define SEND_DATA 0x22
192 #define DISCONN_SEQ 0x23
193 #define TERMINATE_SEQ 0x24
194 #define TARG_CMD_COMPLETE 0x25
195 #define DISCONN 0x27
196 #define RECV_MSG 0x28
197 #define RECV_CMD 0x29
198 #define RECV_DATA 0x2a
199 #define RECV_CMD_SEQ 0x2b
200 #define TARGET_ABORT_DMA 0x04
201
202 /* ================================================================== */
203
204 struct scsi_info_t {
205 struct pcmcia_device *p_dev;
206 dev_node_t node;
207 struct Scsi_Host *host;
208 unsigned short manf_id;
209 };
210
211 /*
212 * Repository for per-instance host data.
213 */
214 struct sym53c500_data {
215 struct scsi_cmnd *current_SC;
216 int fast_pio;
217 };
218
219 enum Phase {
220 idle,
221 data_out,
222 data_in,
223 command_ph,
224 status_ph,
225 message_out,
226 message_in
227 };
228
229 /* ================================================================== */
230
231 static void
232 chip_init(int io_port)
233 {
234 REG1(io_port);
235 outb(0x01, io_port + PIO_STATUS);
236 outb(0x00, io_port + PIO_FLAG);
237
238 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
239 outb(C3_IMG, io_port + CONFIG3);
240 outb(C2_IMG, io_port + CONFIG2);
241 outb(C1_IMG, io_port + CONFIG1);
242
243 outb(0x05, io_port + CLKCONV); /* clock conversion factor */
244 outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */
245 outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */
246 outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */
247 }
248
249 static void
250 SYM53C500_int_host_reset(int io_port)
251 {
252 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
253 outb(CHIP_RESET, io_port + CMD_REG);
254 outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */
255 outb(SCSI_RESET, io_port + CMD_REG);
256 chip_init(io_port);
257 }
258
259 static __inline__ int
260 SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
261 {
262 int i;
263 int len; /* current scsi fifo size */
264
265 REG1(base);
266 while (reqlen) {
267 i = inb(base + PIO_STATUS);
268 /* VDEB(printk("pio_status=%x\n", i)); */
269 if (i & 0x80)
270 return 0;
271
272 switch (i & 0x1e) {
273 default:
274 case 0x10: /* fifo empty */
275 len = 0;
276 break;
277 case 0x0:
278 len = 1;
279 break;
280 case 0x8: /* fifo 1/3 full */
281 len = 42;
282 break;
283 case 0xc: /* fifo 2/3 full */
284 len = 84;
285 break;
286 case 0xe: /* fifo full */
287 len = 128;
288 break;
289 }
290
291 if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */
292 return 0;
293 }
294
295 if (len) {
296 if (len > reqlen)
297 len = reqlen;
298
299 if (fast_pio && len > 3) {
300 insl(base + PIO_FIFO, request, len >> 2);
301 request += len & 0xfc;
302 reqlen -= len & 0xfc;
303 } else {
304 while (len--) {
305 *request++ = inb(base + PIO_FIFO);
306 reqlen--;
307 }
308 }
309 }
310 }
311 return 0;
312 }
313
314 static __inline__ int
315 SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
316 {
317 int i = 0;
318 int len; /* current scsi fifo size */
319
320 REG1(base);
321 while (reqlen && !(i & 0x40)) {
322 i = inb(base + PIO_STATUS);
323 /* VDEB(printk("pio_status=%x\n", i)); */
324 if (i & 0x80) /* error */
325 return 0;
326
327 switch (i & 0x1e) {
328 case 0x10:
329 len = 128;
330 break;
331 case 0x0:
332 len = 84;
333 break;
334 case 0x8:
335 len = 42;
336 break;
337 case 0xc:
338 len = 1;
339 break;
340 default:
341 case 0xe:
342 len = 0;
343 break;
344 }
345
346 if (len) {
347 if (len > reqlen)
348 len = reqlen;
349
350 if (fast_pio && len > 3) {
351 outsl(base + PIO_FIFO, request, len >> 2);
352 request += len & 0xfc;
353 reqlen -= len & 0xfc;
354 } else {
355 while (len--) {
356 outb(*request++, base + PIO_FIFO);
357 reqlen--;
358 }
359 }
360 }
361 }
362 return 0;
363 }
364
365 static irqreturn_t
366 SYM53C500_intr(int irq, void *dev_id, struct pt_regs *regs)
367 {
368 unsigned long flags;
369 struct Scsi_Host *dev = dev_id;
370 DEB(unsigned char fifo_size;)
371 DEB(unsigned char seq_reg;)
372 unsigned char status, int_reg;
373 unsigned char pio_status;
374 struct scatterlist *sglist;
375 unsigned int sgcount;
376 int port_base = dev->io_port;
377 struct sym53c500_data *data =
378 (struct sym53c500_data *)dev->hostdata;
379 struct scsi_cmnd *curSC = data->current_SC;
380 int fast_pio = data->fast_pio;
381
382 spin_lock_irqsave(dev->host_lock, flags);
383
384 VDEB(printk("SYM53C500_intr called\n"));
385
386 REG1(port_base);
387 pio_status = inb(port_base + PIO_STATUS);
388 REG0(port_base);
389 status = inb(port_base + STAT_REG);
390 DEB(seq_reg = inb(port_base + SEQ_REG));
391 int_reg = inb(port_base + INT_REG);
392 DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f);
393
394 #if SYM53C500_DEBUG
395 printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x",
396 status, seq_reg, int_reg, fifo_size);
397 printk(", pio=%02x\n", pio_status);
398 #endif /* SYM53C500_DEBUG */
399
400 if (int_reg & 0x80) { /* SCSI reset intr */
401 DEB(printk("SYM53C500: reset intr received\n"));
402 curSC->result = DID_RESET << 16;
403 goto idle_out;
404 }
405
406 if (pio_status & 0x80) {
407 printk("SYM53C500: Warning: PIO error!\n");
408 curSC->result = DID_ERROR << 16;
409 goto idle_out;
410 }
411
412 if (status & 0x20) { /* Parity error */
413 printk("SYM53C500: Warning: parity error!\n");
414 curSC->result = DID_PARITY << 16;
415 goto idle_out;
416 }
417
418 if (status & 0x40) { /* Gross error */
419 printk("SYM53C500: Warning: gross error!\n");
420 curSC->result = DID_ERROR << 16;
421 goto idle_out;
422 }
423
424 if (int_reg & 0x20) { /* Disconnect */
425 DEB(printk("SYM53C500: disconnect intr received\n"));
426 if (curSC->SCp.phase != message_in) { /* Unexpected disconnect */
427 curSC->result = DID_NO_CONNECT << 16;
428 } else { /* Command complete, return status and message */
429 curSC->result = (curSC->SCp.Status & 0xff)
430 | ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16);
431 }
432 goto idle_out;
433 }
434
435 switch (status & 0x07) { /* scsi phase */
436 case 0x00: /* DATA-OUT */
437 if (int_reg & 0x10) { /* Target requesting info transfer */
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, curSC->request_bufflen); /* Max transfer size */
442 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
443 if (!curSC->use_sg) /* Don't use scatter-gather */
444 SYM53C500_pio_write(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen);
445 else { /* use scatter-gather */
446 sgcount = curSC->use_sg;
447 sglist = curSC->request_buffer;
448 while (sgcount--) {
449 SYM53C500_pio_write(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length);
450 sglist++;
451 }
452 }
453 REG0(port_base);
454 }
455 break;
456
457 case 0x01: /* DATA-IN */
458 if (int_reg & 0x10) { /* Target requesting info transfer */
459 curSC->SCp.phase = data_in;
460 VDEB(printk("SYM53C500: Data-In phase\n"));
461 outb(FLUSH_FIFO, port_base + CMD_REG);
462 LOAD_DMA_COUNT(port_base, curSC->request_bufflen); /* Max transfer size */
463 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
464 if (!curSC->use_sg) /* Don't use scatter-gather */
465 SYM53C500_pio_read(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen);
466 else { /* Use scatter-gather */
467 sgcount = curSC->use_sg;
468 sglist = curSC->request_buffer;
469 while (sgcount--) {
470 SYM53C500_pio_read(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length);
471 sglist++;
472 }
473 }
474 REG0(port_base);
475 }
476 break;
477
478 case 0x02: /* COMMAND */
479 curSC->SCp.phase = command_ph;
480 printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n");
481 break;
482
483 case 0x03: /* STATUS */
484 curSC->SCp.phase = status_ph;
485 VDEB(printk("SYM53C500: Status phase\n"));
486 outb(FLUSH_FIFO, port_base + CMD_REG);
487 outb(INIT_CMD_COMPLETE, port_base + CMD_REG);
488 break;
489
490 case 0x04: /* Reserved */
491 case 0x05: /* Reserved */
492 printk("SYM53C500: WARNING: Reserved phase!!!\n");
493 break;
494
495 case 0x06: /* MESSAGE-OUT */
496 DEB(printk("SYM53C500: Message-Out phase\n"));
497 curSC->SCp.phase = message_out;
498 outb(SET_ATN, port_base + CMD_REG); /* Reject the message */
499 outb(MSG_ACCEPT, port_base + CMD_REG);
500 break;
501
502 case 0x07: /* MESSAGE-IN */
503 VDEB(printk("SYM53C500: Message-In phase\n"));
504 curSC->SCp.phase = message_in;
505
506 curSC->SCp.Status = inb(port_base + SCSI_FIFO);
507 curSC->SCp.Message = inb(port_base + SCSI_FIFO);
508
509 VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f));
510 DEB(printk("Status = %02x Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message));
511
512 if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) {
513 outb(SET_ATN, port_base + CMD_REG); /* Reject message */
514 DEB(printk("Discarding SAVE_POINTERS message\n"));
515 }
516 outb(MSG_ACCEPT, port_base + CMD_REG);
517 break;
518 }
519 out:
520 spin_unlock_irqrestore(dev->host_lock, flags);
521 return IRQ_HANDLED;
522
523 idle_out:
524 curSC->SCp.phase = idle;
525 curSC->scsi_done(curSC);
526 goto out;
527 }
528
529 static void
530 SYM53C500_release(struct pcmcia_device *link)
531 {
532 struct scsi_info_t *info = link->priv;
533 struct Scsi_Host *shost = info->host;
534
535 DEBUG(0, "SYM53C500_release(0x%p)\n", link);
536
537 /*
538 * Do this before releasing/freeing resources.
539 */
540 scsi_remove_host(shost);
541
542 /*
543 * Interrupts getting hosed on card removal. Try
544 * the following code, mostly from qlogicfas.c.
545 */
546 if (shost->irq)
547 free_irq(shost->irq, shost);
548 if (shost->dma_channel != 0xff)
549 free_dma(shost->dma_channel);
550 if (shost->io_port && shost->n_io_port)
551 release_region(shost->io_port, shost->n_io_port);
552
553 pcmcia_disable_device(link);
554
555 scsi_host_put(shost);
556 } /* SYM53C500_release */
557
558 static const char*
559 SYM53C500_info(struct Scsi_Host *SChost)
560 {
561 static char info_msg[256];
562 struct sym53c500_data *data =
563 (struct sym53c500_data *)SChost->hostdata;
564
565 DEB(printk("SYM53C500_info called\n"));
566 (void)snprintf(info_msg, sizeof(info_msg),
567 "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.",
568 SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow");
569 return (info_msg);
570 }
571
572 static int
573 SYM53C500_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
574 {
575 int i;
576 int port_base = SCpnt->device->host->io_port;
577 struct sym53c500_data *data =
578 (struct sym53c500_data *)SCpnt->device->host->hostdata;
579
580 VDEB(printk("SYM53C500_queue called\n"));
581
582 DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n",
583 SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id,
584 SCpnt->device->lun, SCpnt->request_bufflen));
585
586 VDEB(for (i = 0; i < SCpnt->cmd_len; i++)
587 printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i]));
588 VDEB(printk("\n"));
589
590 data->current_SC = SCpnt;
591 data->current_SC->scsi_done = done;
592 data->current_SC->SCp.phase = command_ph;
593 data->current_SC->SCp.Status = 0;
594 data->current_SC->SCp.Message = 0;
595
596 /* We are locked here already by the mid layer */
597 REG0(port_base);
598 outb(scmd_id(SCpnt), port_base + DEST_ID); /* set destination */
599 outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */
600
601 for (i = 0; i < SCpnt->cmd_len; i++) {
602 outb(SCpnt->cmnd[i], port_base + SCSI_FIFO);
603 }
604 outb(SELECT_NO_ATN, port_base + CMD_REG);
605
606 return 0;
607 }
608
609 static int
610 SYM53C500_host_reset(struct scsi_cmnd *SCpnt)
611 {
612 int port_base = SCpnt->device->host->io_port;
613
614 DEB(printk("SYM53C500_host_reset called\n"));
615 spin_lock_irq(SCpnt->device->host->host_lock);
616 SYM53C500_int_host_reset(port_base);
617 spin_unlock_irq(SCpnt->device->host->host_lock);
618
619 return SUCCESS;
620 }
621
622 static int
623 SYM53C500_biosparm(struct scsi_device *disk,
624 struct block_device *dev,
625 sector_t capacity, int *info_array)
626 {
627 int size;
628
629 DEB(printk("SYM53C500_biosparm called\n"));
630
631 size = capacity;
632 info_array[0] = 64; /* heads */
633 info_array[1] = 32; /* sectors */
634 info_array[2] = size >> 11; /* cylinders */
635 if (info_array[2] > 1024) { /* big disk */
636 info_array[0] = 255;
637 info_array[1] = 63;
638 info_array[2] = size / (255 * 63);
639 }
640 return 0;
641 }
642
643 static ssize_t
644 SYM53C500_show_pio(struct class_device *cdev, char *buf)
645 {
646 struct Scsi_Host *SHp = class_to_shost(cdev);
647 struct sym53c500_data *data =
648 (struct sym53c500_data *)SHp->hostdata;
649
650 return snprintf(buf, 4, "%d\n", data->fast_pio);
651 }
652
653 static ssize_t
654 SYM53C500_store_pio(struct class_device *cdev, const char *buf, size_t count)
655 {
656 int pio;
657 struct Scsi_Host *SHp = class_to_shost(cdev);
658 struct sym53c500_data *data =
659 (struct sym53c500_data *)SHp->hostdata;
660
661 pio = simple_strtoul(buf, NULL, 0);
662 if (pio == 0 || pio == 1) {
663 data->fast_pio = pio;
664 return count;
665 }
666 else
667 return -EINVAL;
668 }
669
670 /*
671 * SCSI HBA device attributes we want to
672 * make available via sysfs.
673 */
674 static struct class_device_attribute SYM53C500_pio_attr = {
675 .attr = {
676 .name = "fast_pio",
677 .mode = (S_IRUGO | S_IWUSR),
678 },
679 .show = SYM53C500_show_pio,
680 .store = SYM53C500_store_pio,
681 };
682
683 static struct class_device_attribute *SYM53C500_shost_attrs[] = {
684 &SYM53C500_pio_attr,
685 NULL,
686 };
687
688 /*
689 * scsi_host_template initializer
690 */
691 static struct scsi_host_template sym53c500_driver_template = {
692 .module = THIS_MODULE,
693 .name = "SYM53C500",
694 .info = SYM53C500_info,
695 .queuecommand = SYM53C500_queue,
696 .eh_host_reset_handler = SYM53C500_host_reset,
697 .bios_param = SYM53C500_biosparm,
698 .proc_name = "SYM53C500",
699 .can_queue = 1,
700 .this_id = 7,
701 .sg_tablesize = 32,
702 .cmd_per_lun = 1,
703 .use_clustering = ENABLE_CLUSTERING,
704 .shost_attrs = SYM53C500_shost_attrs
705 };
706
707 #define CS_CHECK(fn, ret) \
708 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
709
710 static int
711 SYM53C500_config(struct pcmcia_device *link)
712 {
713 struct scsi_info_t *info = link->priv;
714 tuple_t tuple;
715 cisparse_t parse;
716 int i, last_ret, last_fn;
717 int irq_level, port_base;
718 unsigned short tuple_data[32];
719 struct Scsi_Host *host;
720 struct scsi_host_template *tpnt = &sym53c500_driver_template;
721 struct sym53c500_data *data;
722
723 DEBUG(0, "SYM53C500_config(0x%p)\n", link);
724
725 tuple.TupleData = (cisdata_t *)tuple_data;
726 tuple.TupleDataMax = 64;
727 tuple.TupleOffset = 0;
728 tuple.DesiredTuple = CISTPL_CONFIG;
729 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
730 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple));
731 CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse));
732 link->conf.ConfigBase = parse.config.base;
733
734 tuple.DesiredTuple = CISTPL_MANFID;
735 if ((pcmcia_get_first_tuple(link, &tuple) == CS_SUCCESS) &&
736 (pcmcia_get_tuple_data(link, &tuple) == CS_SUCCESS))
737 info->manf_id = le16_to_cpu(tuple.TupleData[0]);
738
739 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
740 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
741 while (1) {
742 if (pcmcia_get_tuple_data(link, &tuple) != 0 ||
743 pcmcia_parse_tuple(link, &tuple, &parse) != 0)
744 goto next_entry;
745 link->conf.ConfigIndex = parse.cftable_entry.index;
746 link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
747 link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
748
749 if (link->io.BasePort1 != 0) {
750 i = pcmcia_request_io(link, &link->io);
751 if (i == CS_SUCCESS)
752 break;
753 }
754 next_entry:
755 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(link, &tuple));
756 }
757
758 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
759 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
760
761 /*
762 * That's the trouble with copying liberally from another driver.
763 * Some things probably aren't relevant, and I suspect this entire
764 * section dealing with manufacturer IDs can be scrapped. --rct
765 */
766 if ((info->manf_id == MANFID_MACNICA) ||
767 (info->manf_id == MANFID_PIONEER) ||
768 (info->manf_id == 0x0098)) {
769 /* set ATAcmd */
770 outb(0xb4, link->io.BasePort1 + 0xd);
771 outb(0x24, link->io.BasePort1 + 0x9);
772 outb(0x04, link->io.BasePort1 + 0xd);
773 }
774
775 /*
776 * irq_level == 0 implies tpnt->can_queue == 0, which
777 * is not supported in 2.6. Thus, only irq_level > 0
778 * will be allowed.
779 *
780 * Possible port_base values are as follows:
781 *
782 * 0x130, 0x230, 0x280, 0x290,
783 * 0x320, 0x330, 0x340, 0x350
784 */
785 port_base = link->io.BasePort1;
786 irq_level = link->irq.AssignedIRQ;
787
788 DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n",
789 port_base, irq_level, USE_FAST_PIO);)
790
791 chip_init(port_base);
792
793 host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data));
794 if (!host) {
795 printk("SYM53C500: Unable to register host, giving up.\n");
796 goto err_release;
797 }
798
799 data = (struct sym53c500_data *)host->hostdata;
800
801 if (irq_level > 0) {
802 if (request_irq(irq_level, SYM53C500_intr, SA_SHIRQ, "SYM53C500", host)) {
803 printk("SYM53C500: unable to allocate IRQ %d\n", irq_level);
804 goto err_free_scsi;
805 }
806 DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level));
807 } else if (irq_level == 0) {
808 DEB(printk("SYM53C500: No interrupts detected\n"));
809 goto err_free_scsi;
810 } else {
811 DEB(printk("SYM53C500: Shouldn't get here!\n"));
812 goto err_free_scsi;
813 }
814
815 host->unique_id = port_base;
816 host->irq = irq_level;
817 host->io_port = port_base;
818 host->n_io_port = 0x10;
819 host->dma_channel = -1;
820
821 /*
822 * Note fast_pio is set to USE_FAST_PIO by
823 * default, but can be changed via "sysfs".
824 */
825 data->fast_pio = USE_FAST_PIO;
826
827 sprintf(info->node.dev_name, "scsi%d", host->host_no);
828 link->dev_node = &info->node;
829 info->host = host;
830
831 if (scsi_add_host(host, NULL))
832 goto err_free_irq;
833
834 scsi_scan_host(host);
835
836 return 0;
837
838 err_free_irq:
839 free_irq(irq_level, host);
840 err_free_scsi:
841 scsi_host_put(host);
842 err_release:
843 release_region(port_base, 0x10);
844 printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n");
845 return -ENODEV;
846
847 cs_failed:
848 cs_error(link, last_fn, last_ret);
849 SYM53C500_release(link);
850 return -ENODEV;
851 } /* SYM53C500_config */
852
853 static int sym53c500_resume(struct pcmcia_device *link)
854 {
855 struct scsi_info_t *info = link->priv;
856
857 /* See earlier comment about manufacturer IDs. */
858 if ((info->manf_id == MANFID_MACNICA) ||
859 (info->manf_id == MANFID_PIONEER) ||
860 (info->manf_id == 0x0098)) {
861 outb(0x80, link->io.BasePort1 + 0xd);
862 outb(0x24, link->io.BasePort1 + 0x9);
863 outb(0x04, link->io.BasePort1 + 0xd);
864 }
865 /*
866 * If things don't work after a "resume",
867 * this is a good place to start looking.
868 */
869 SYM53C500_int_host_reset(link->io.BasePort1);
870
871 return 0;
872 }
873
874 static void
875 SYM53C500_detach(struct pcmcia_device *link)
876 {
877 DEBUG(0, "SYM53C500_detach(0x%p)\n", link);
878
879 SYM53C500_release(link);
880
881 kfree(link->priv);
882 link->priv = NULL;
883 } /* SYM53C500_detach */
884
885 static int
886 SYM53C500_probe(struct pcmcia_device *link)
887 {
888 struct scsi_info_t *info;
889
890 DEBUG(0, "SYM53C500_attach()\n");
891
892 /* Create new SCSI device */
893 info = kmalloc(sizeof(*info), GFP_KERNEL);
894 if (!info)
895 return -ENOMEM;
896 memset(info, 0, sizeof(*info));
897 info->p_dev = link;
898 link->priv = info;
899 link->io.NumPorts1 = 16;
900 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
901 link->io.IOAddrLines = 10;
902 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
903 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
904 link->conf.Attributes = CONF_ENABLE_IRQ;
905 link->conf.IntType = INT_MEMORY_AND_IO;
906 link->conf.Present = PRESENT_OPTION;
907
908 return SYM53C500_config(link);
909 } /* SYM53C500_attach */
910
911 MODULE_AUTHOR("Bob Tracy <rct@frus.com>");
912 MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver");
913 MODULE_LICENSE("GPL");
914
915 static struct pcmcia_device_id sym53c500_ids[] = {
916 PCMCIA_DEVICE_PROD_ID12("BASICS by New Media Corporation", "SCSI Sym53C500", 0x23c78a9d, 0x0099e7f7),
917 PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "SCSI Bus Toaster Sym53C500", 0x085a850b, 0x45432eb8),
918 PCMCIA_DEVICE_PROD_ID2("SCSI9000", 0x21648f44),
919 PCMCIA_DEVICE_NULL,
920 };
921 MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids);
922
923 static struct pcmcia_driver sym53c500_cs_driver = {
924 .owner = THIS_MODULE,
925 .drv = {
926 .name = "sym53c500_cs",
927 },
928 .probe = SYM53C500_probe,
929 .remove = SYM53C500_detach,
930 .id_table = sym53c500_ids,
931 .resume = sym53c500_resume,
932 };
933
934 static int __init
935 init_sym53c500_cs(void)
936 {
937 return pcmcia_register_driver(&sym53c500_cs_driver);
938 }
939
940 static void __exit
941 exit_sym53c500_cs(void)
942 {
943 pcmcia_unregister_driver(&sym53c500_cs_driver);
944 }
945
946 module_init(init_sym53c500_cs);
947 module_exit(exit_sym53c500_cs);
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