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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[deliverable/linux.git] / drivers / scsi / pcmcia / sym53c500_cs.c
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
83 #define SYNC_MODE 0 /* Synchronous transfer mode */
84
85 /* Default configuration */
86 #define C1_IMG 0x07 /* ID=7 */
87 #define C2_IMG 0x48 /* FE SCSI2 */
88 #define C3_IMG 0x20 /* CDB */
89 #define C4_IMG 0x04 /* ANE */
90 #define C5_IMG 0xa4 /* ? changed from b6= AA PI SIE POL */
91 #define C7_IMG 0x80 /* added for SYM53C500 t. corner */
92
93 /* Hardware Registers: offsets from io_port (base) */
94
95 /* Control Register Set 0 */
96 #define TC_LSB 0x00 /* transfer counter lsb */
97 #define TC_MSB 0x01 /* transfer counter msb */
98 #define SCSI_FIFO 0x02 /* scsi fifo register */
99 #define CMD_REG 0x03 /* command register */
100 #define STAT_REG 0x04 /* status register */
101 #define DEST_ID 0x04 /* selection/reselection bus id */
102 #define INT_REG 0x05 /* interrupt status register */
103 #define SRTIMOUT 0x05 /* select/reselect timeout reg */
104 #define SEQ_REG 0x06 /* sequence step register */
105 #define SYNCPRD 0x06 /* synchronous transfer period */
106 #define FIFO_FLAGS 0x07 /* indicates # of bytes in fifo */
107 #define SYNCOFF 0x07 /* synchronous offset register */
108 #define CONFIG1 0x08 /* configuration register */
109 #define CLKCONV 0x09 /* clock conversion register */
110 /* #define TESTREG 0x0A */ /* test mode register */
111 #define CONFIG2 0x0B /* configuration 2 register */
112 #define CONFIG3 0x0C /* configuration 3 register */
113 #define CONFIG4 0x0D /* configuration 4 register */
114 #define TC_HIGH 0x0E /* transfer counter high */
115 /* #define FIFO_BOTTOM 0x0F */ /* reserve FIFO byte register */
116
117 /* Control Register Set 1 */
118 /* #define JUMPER_SENSE 0x00 */ /* jumper sense port reg (r/w) */
119 /* #define SRAM_PTR 0x01 */ /* SRAM address pointer reg (r/w) */
120 /* #define SRAM_DATA 0x02 */ /* SRAM data register (r/w) */
121 #define PIO_FIFO 0x04 /* PIO FIFO registers (r/w) */
122 /* #define PIO_FIFO1 0x05 */ /* */
123 /* #define PIO_FIFO2 0x06 */ /* */
124 /* #define PIO_FIFO3 0x07 */ /* */
125 #define PIO_STATUS 0x08 /* PIO status (r/w) */
126 /* #define ATA_CMD 0x09 */ /* ATA command/status reg (r/w) */
127 /* #define ATA_ERR 0x0A */ /* ATA features/error reg (r/w) */
128 #define PIO_FLAG 0x0B /* PIO flag interrupt enable (r/w) */
129 #define CONFIG5 0x09 /* configuration 5 register */
130 /* #define SIGNATURE 0x0E */ /* signature register (r) */
131 /* #define CONFIG6 0x0F */ /* configuration 6 register (r) */
132 #define CONFIG7 0x0d
133
134 /* select register set 0 */
135 #define REG0(x) (outb(C4_IMG, (x) + CONFIG4))
136 /* select register set 1 */
137 #define REG1(x) outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5)
138
139 #if SYM53C500_DEBUG
140 #define DEB(x) x
141 #else
142 #define DEB(x)
143 #endif
144
145 #if VERBOSE_SYM53C500_DEBUG
146 #define VDEB(x) x
147 #else
148 #define VDEB(x)
149 #endif
150
151 #define LOAD_DMA_COUNT(x, count) \
152 outb(count & 0xff, (x) + TC_LSB); \
153 outb((count >> 8) & 0xff, (x) + TC_MSB); \
154 outb((count >> 16) & 0xff, (x) + TC_HIGH);
155
156 /* Chip commands */
157 #define DMA_OP 0x80
158
159 #define SCSI_NOP 0x00
160 #define FLUSH_FIFO 0x01
161 #define CHIP_RESET 0x02
162 #define SCSI_RESET 0x03
163 #define RESELECT 0x40
164 #define SELECT_NO_ATN 0x41
165 #define SELECT_ATN 0x42
166 #define SELECT_ATN_STOP 0x43
167 #define ENABLE_SEL 0x44
168 #define DISABLE_SEL 0x45
169 #define SELECT_ATN3 0x46
170 #define RESELECT3 0x47
171 #define TRANSFER_INFO 0x10
172 #define INIT_CMD_COMPLETE 0x11
173 #define MSG_ACCEPT 0x12
174 #define TRANSFER_PAD 0x18
175 #define SET_ATN 0x1a
176 #define RESET_ATN 0x1b
177 #define SEND_MSG 0x20
178 #define SEND_STATUS 0x21
179 #define SEND_DATA 0x22
180 #define DISCONN_SEQ 0x23
181 #define TERMINATE_SEQ 0x24
182 #define TARG_CMD_COMPLETE 0x25
183 #define DISCONN 0x27
184 #define RECV_MSG 0x28
185 #define RECV_CMD 0x29
186 #define RECV_DATA 0x2a
187 #define RECV_CMD_SEQ 0x2b
188 #define TARGET_ABORT_DMA 0x04
189
190 /* ================================================================== */
191
192 struct scsi_info_t {
193 struct pcmcia_device *p_dev;
194 struct Scsi_Host *host;
195 unsigned short manf_id;
196 };
197
198 /*
199 * Repository for per-instance host data.
200 */
201 struct sym53c500_data {
202 struct scsi_cmnd *current_SC;
203 int fast_pio;
204 };
205
206 enum Phase {
207 idle,
208 data_out,
209 data_in,
210 command_ph,
211 status_ph,
212 message_out,
213 message_in
214 };
215
216 /* ================================================================== */
217
218 static void
219 chip_init(int io_port)
220 {
221 REG1(io_port);
222 outb(0x01, io_port + PIO_STATUS);
223 outb(0x00, io_port + PIO_FLAG);
224
225 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
226 outb(C3_IMG, io_port + CONFIG3);
227 outb(C2_IMG, io_port + CONFIG2);
228 outb(C1_IMG, io_port + CONFIG1);
229
230 outb(0x05, io_port + CLKCONV); /* clock conversion factor */
231 outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */
232 outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */
233 outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */
234 }
235
236 static void
237 SYM53C500_int_host_reset(int io_port)
238 {
239 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
240 outb(CHIP_RESET, io_port + CMD_REG);
241 outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */
242 outb(SCSI_RESET, io_port + CMD_REG);
243 chip_init(io_port);
244 }
245
246 static __inline__ int
247 SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
248 {
249 int i;
250 int len; /* current scsi fifo size */
251
252 REG1(base);
253 while (reqlen) {
254 i = inb(base + PIO_STATUS);
255 /* VDEB(printk("pio_status=%x\n", i)); */
256 if (i & 0x80)
257 return 0;
258
259 switch (i & 0x1e) {
260 default:
261 case 0x10: /* fifo empty */
262 len = 0;
263 break;
264 case 0x0:
265 len = 1;
266 break;
267 case 0x8: /* fifo 1/3 full */
268 len = 42;
269 break;
270 case 0xc: /* fifo 2/3 full */
271 len = 84;
272 break;
273 case 0xe: /* fifo full */
274 len = 128;
275 break;
276 }
277
278 if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */
279 return 0;
280 }
281
282 if (len) {
283 if (len > reqlen)
284 len = reqlen;
285
286 if (fast_pio && len > 3) {
287 insl(base + PIO_FIFO, request, len >> 2);
288 request += len & 0xfc;
289 reqlen -= len & 0xfc;
290 } else {
291 while (len--) {
292 *request++ = inb(base + PIO_FIFO);
293 reqlen--;
294 }
295 }
296 }
297 }
298 return 0;
299 }
300
301 static __inline__ int
302 SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
303 {
304 int i = 0;
305 int len; /* current scsi fifo size */
306
307 REG1(base);
308 while (reqlen && !(i & 0x40)) {
309 i = inb(base + PIO_STATUS);
310 /* VDEB(printk("pio_status=%x\n", i)); */
311 if (i & 0x80) /* error */
312 return 0;
313
314 switch (i & 0x1e) {
315 case 0x10:
316 len = 128;
317 break;
318 case 0x0:
319 len = 84;
320 break;
321 case 0x8:
322 len = 42;
323 break;
324 case 0xc:
325 len = 1;
326 break;
327 default:
328 case 0xe:
329 len = 0;
330 break;
331 }
332
333 if (len) {
334 if (len > reqlen)
335 len = reqlen;
336
337 if (fast_pio && len > 3) {
338 outsl(base + PIO_FIFO, request, len >> 2);
339 request += len & 0xfc;
340 reqlen -= len & 0xfc;
341 } else {
342 while (len--) {
343 outb(*request++, base + PIO_FIFO);
344 reqlen--;
345 }
346 }
347 }
348 }
349 return 0;
350 }
351
352 static irqreturn_t
353 SYM53C500_intr(int irq, void *dev_id)
354 {
355 unsigned long flags;
356 struct Scsi_Host *dev = dev_id;
357 DEB(unsigned char fifo_size;)
358 DEB(unsigned char seq_reg;)
359 unsigned char status, int_reg;
360 unsigned char pio_status;
361 int port_base = dev->io_port;
362 struct sym53c500_data *data =
363 (struct sym53c500_data *)dev->hostdata;
364 struct scsi_cmnd *curSC = data->current_SC;
365 int fast_pio = data->fast_pio;
366
367 spin_lock_irqsave(dev->host_lock, flags);
368
369 VDEB(printk("SYM53C500_intr called\n"));
370
371 REG1(port_base);
372 pio_status = inb(port_base + PIO_STATUS);
373 REG0(port_base);
374 status = inb(port_base + STAT_REG);
375 DEB(seq_reg = inb(port_base + SEQ_REG));
376 int_reg = inb(port_base + INT_REG);
377 DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f);
378
379 #if SYM53C500_DEBUG
380 printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x",
381 status, seq_reg, int_reg, fifo_size);
382 printk(", pio=%02x\n", pio_status);
383 #endif /* SYM53C500_DEBUG */
384
385 if (int_reg & 0x80) { /* SCSI reset intr */
386 DEB(printk("SYM53C500: reset intr received\n"));
387 curSC->result = DID_RESET << 16;
388 goto idle_out;
389 }
390
391 if (pio_status & 0x80) {
392 printk("SYM53C500: Warning: PIO error!\n");
393 curSC->result = DID_ERROR << 16;
394 goto idle_out;
395 }
396
397 if (status & 0x20) { /* Parity error */
398 printk("SYM53C500: Warning: parity error!\n");
399 curSC->result = DID_PARITY << 16;
400 goto idle_out;
401 }
402
403 if (status & 0x40) { /* Gross error */
404 printk("SYM53C500: Warning: gross error!\n");
405 curSC->result = DID_ERROR << 16;
406 goto idle_out;
407 }
408
409 if (int_reg & 0x20) { /* Disconnect */
410 DEB(printk("SYM53C500: disconnect intr received\n"));
411 if (curSC->SCp.phase != message_in) { /* Unexpected disconnect */
412 curSC->result = DID_NO_CONNECT << 16;
413 } else { /* Command complete, return status and message */
414 curSC->result = (curSC->SCp.Status & 0xff)
415 | ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16);
416 }
417 goto idle_out;
418 }
419
420 switch (status & 0x07) { /* scsi phase */
421 case 0x00: /* DATA-OUT */
422 if (int_reg & 0x10) { /* Target requesting info transfer */
423 struct scatterlist *sg;
424 int i;
425
426 curSC->SCp.phase = data_out;
427 VDEB(printk("SYM53C500: Data-Out phase\n"));
428 outb(FLUSH_FIFO, port_base + CMD_REG);
429 LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */
430 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
431
432 scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {
433 SYM53C500_pio_write(fast_pio, port_base,
434 sg_virt(sg), sg->length);
435 }
436 REG0(port_base);
437 }
438 break;
439
440 case 0x01: /* DATA-IN */
441 if (int_reg & 0x10) { /* Target requesting info transfer */
442 struct scatterlist *sg;
443 int i;
444
445 curSC->SCp.phase = data_in;
446 VDEB(printk("SYM53C500: Data-In phase\n"));
447 outb(FLUSH_FIFO, port_base + CMD_REG);
448 LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */
449 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
450
451 scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {
452 SYM53C500_pio_read(fast_pio, port_base,
453 sg_virt(sg), sg->length);
454 }
455 REG0(port_base);
456 }
457 break;
458
459 case 0x02: /* COMMAND */
460 curSC->SCp.phase = command_ph;
461 printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n");
462 break;
463
464 case 0x03: /* STATUS */
465 curSC->SCp.phase = status_ph;
466 VDEB(printk("SYM53C500: Status phase\n"));
467 outb(FLUSH_FIFO, port_base + CMD_REG);
468 outb(INIT_CMD_COMPLETE, port_base + CMD_REG);
469 break;
470
471 case 0x04: /* Reserved */
472 case 0x05: /* Reserved */
473 printk("SYM53C500: WARNING: Reserved phase!!!\n");
474 break;
475
476 case 0x06: /* MESSAGE-OUT */
477 DEB(printk("SYM53C500: Message-Out phase\n"));
478 curSC->SCp.phase = message_out;
479 outb(SET_ATN, port_base + CMD_REG); /* Reject the message */
480 outb(MSG_ACCEPT, port_base + CMD_REG);
481 break;
482
483 case 0x07: /* MESSAGE-IN */
484 VDEB(printk("SYM53C500: Message-In phase\n"));
485 curSC->SCp.phase = message_in;
486
487 curSC->SCp.Status = inb(port_base + SCSI_FIFO);
488 curSC->SCp.Message = inb(port_base + SCSI_FIFO);
489
490 VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f));
491 DEB(printk("Status = %02x Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message));
492
493 if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) {
494 outb(SET_ATN, port_base + CMD_REG); /* Reject message */
495 DEB(printk("Discarding SAVE_POINTERS message\n"));
496 }
497 outb(MSG_ACCEPT, port_base + CMD_REG);
498 break;
499 }
500 out:
501 spin_unlock_irqrestore(dev->host_lock, flags);
502 return IRQ_HANDLED;
503
504 idle_out:
505 curSC->SCp.phase = idle;
506 curSC->scsi_done(curSC);
507 goto out;
508 }
509
510 static void
511 SYM53C500_release(struct pcmcia_device *link)
512 {
513 struct scsi_info_t *info = link->priv;
514 struct Scsi_Host *shost = info->host;
515
516 dev_dbg(&link->dev, "SYM53C500_release\n");
517
518 /*
519 * Do this before releasing/freeing resources.
520 */
521 scsi_remove_host(shost);
522
523 /*
524 * Interrupts getting hosed on card removal. Try
525 * the following code, mostly from qlogicfas.c.
526 */
527 if (shost->irq)
528 free_irq(shost->irq, shost);
529 if (shost->io_port && shost->n_io_port)
530 release_region(shost->io_port, shost->n_io_port);
531
532 pcmcia_disable_device(link);
533
534 scsi_host_put(shost);
535 } /* SYM53C500_release */
536
537 static const char*
538 SYM53C500_info(struct Scsi_Host *SChost)
539 {
540 static char info_msg[256];
541 struct sym53c500_data *data =
542 (struct sym53c500_data *)SChost->hostdata;
543
544 DEB(printk("SYM53C500_info called\n"));
545 (void)snprintf(info_msg, sizeof(info_msg),
546 "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.",
547 SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow");
548 return (info_msg);
549 }
550
551 static int
552 SYM53C500_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
553 {
554 int i;
555 int port_base = SCpnt->device->host->io_port;
556 struct sym53c500_data *data =
557 (struct sym53c500_data *)SCpnt->device->host->hostdata;
558
559 VDEB(printk("SYM53C500_queue called\n"));
560
561 DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n",
562 SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id,
563 SCpnt->device->lun, scsi_bufflen(SCpnt)));
564
565 VDEB(for (i = 0; i < SCpnt->cmd_len; i++)
566 printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i]));
567 VDEB(printk("\n"));
568
569 data->current_SC = SCpnt;
570 data->current_SC->scsi_done = done;
571 data->current_SC->SCp.phase = command_ph;
572 data->current_SC->SCp.Status = 0;
573 data->current_SC->SCp.Message = 0;
574
575 /* We are locked here already by the mid layer */
576 REG0(port_base);
577 outb(scmd_id(SCpnt), port_base + DEST_ID); /* set destination */
578 outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */
579
580 for (i = 0; i < SCpnt->cmd_len; i++) {
581 outb(SCpnt->cmnd[i], port_base + SCSI_FIFO);
582 }
583 outb(SELECT_NO_ATN, port_base + CMD_REG);
584
585 return 0;
586 }
587
588 static int
589 SYM53C500_host_reset(struct scsi_cmnd *SCpnt)
590 {
591 int port_base = SCpnt->device->host->io_port;
592
593 DEB(printk("SYM53C500_host_reset called\n"));
594 spin_lock_irq(SCpnt->device->host->host_lock);
595 SYM53C500_int_host_reset(port_base);
596 spin_unlock_irq(SCpnt->device->host->host_lock);
597
598 return SUCCESS;
599 }
600
601 static int
602 SYM53C500_biosparm(struct scsi_device *disk,
603 struct block_device *dev,
604 sector_t capacity, int *info_array)
605 {
606 int size;
607
608 DEB(printk("SYM53C500_biosparm called\n"));
609
610 size = capacity;
611 info_array[0] = 64; /* heads */
612 info_array[1] = 32; /* sectors */
613 info_array[2] = size >> 11; /* cylinders */
614 if (info_array[2] > 1024) { /* big disk */
615 info_array[0] = 255;
616 info_array[1] = 63;
617 info_array[2] = size / (255 * 63);
618 }
619 return 0;
620 }
621
622 static ssize_t
623 SYM53C500_show_pio(struct device *dev, struct device_attribute *attr,
624 char *buf)
625 {
626 struct Scsi_Host *SHp = class_to_shost(dev);
627 struct sym53c500_data *data =
628 (struct sym53c500_data *)SHp->hostdata;
629
630 return snprintf(buf, 4, "%d\n", data->fast_pio);
631 }
632
633 static ssize_t
634 SYM53C500_store_pio(struct device *dev, struct device_attribute *attr,
635 const char *buf, size_t count)
636 {
637 int pio;
638 struct Scsi_Host *SHp = class_to_shost(dev);
639 struct sym53c500_data *data =
640 (struct sym53c500_data *)SHp->hostdata;
641
642 pio = simple_strtoul(buf, NULL, 0);
643 if (pio == 0 || pio == 1) {
644 data->fast_pio = pio;
645 return count;
646 }
647 else
648 return -EINVAL;
649 }
650
651 /*
652 * SCSI HBA device attributes we want to
653 * make available via sysfs.
654 */
655 static struct device_attribute SYM53C500_pio_attr = {
656 .attr = {
657 .name = "fast_pio",
658 .mode = (S_IRUGO | S_IWUSR),
659 },
660 .show = SYM53C500_show_pio,
661 .store = SYM53C500_store_pio,
662 };
663
664 static struct device_attribute *SYM53C500_shost_attrs[] = {
665 &SYM53C500_pio_attr,
666 NULL,
667 };
668
669 /*
670 * scsi_host_template initializer
671 */
672 static struct scsi_host_template sym53c500_driver_template = {
673 .module = THIS_MODULE,
674 .name = "SYM53C500",
675 .info = SYM53C500_info,
676 .queuecommand = SYM53C500_queue,
677 .eh_host_reset_handler = SYM53C500_host_reset,
678 .bios_param = SYM53C500_biosparm,
679 .proc_name = "SYM53C500",
680 .can_queue = 1,
681 .this_id = 7,
682 .sg_tablesize = 32,
683 .cmd_per_lun = 1,
684 .use_clustering = ENABLE_CLUSTERING,
685 .shost_attrs = SYM53C500_shost_attrs
686 };
687
688 static int SYM53C500_config_check(struct pcmcia_device *p_dev,
689 cistpl_cftable_entry_t *cfg,
690 cistpl_cftable_entry_t *dflt,
691 unsigned int vcc,
692 void *priv_data)
693 {
694 p_dev->io.BasePort1 = cfg->io.win[0].base;
695 p_dev->io.NumPorts1 = cfg->io.win[0].len;
696
697 if (p_dev->io.BasePort1 == 0)
698 return -ENODEV;
699
700 return pcmcia_request_io(p_dev, &p_dev->io);
701 }
702
703 static int
704 SYM53C500_config(struct pcmcia_device *link)
705 {
706 struct scsi_info_t *info = link->priv;
707 int ret;
708 int irq_level, port_base;
709 struct Scsi_Host *host;
710 struct scsi_host_template *tpnt = &sym53c500_driver_template;
711 struct sym53c500_data *data;
712
713 dev_dbg(&link->dev, "SYM53C500_config\n");
714
715 info->manf_id = link->manf_id;
716
717 ret = pcmcia_loop_config(link, SYM53C500_config_check, NULL);
718 if (ret)
719 goto failed;
720
721 if (!link->irq)
722 goto failed;
723
724 ret = pcmcia_request_configuration(link, &link->conf);
725 if (ret)
726 goto failed;
727
728 /*
729 * That's the trouble with copying liberally from another driver.
730 * Some things probably aren't relevant, and I suspect this entire
731 * section dealing with manufacturer IDs can be scrapped. --rct
732 */
733 if ((info->manf_id == MANFID_MACNICA) ||
734 (info->manf_id == MANFID_PIONEER) ||
735 (info->manf_id == 0x0098)) {
736 /* set ATAcmd */
737 outb(0xb4, link->io.BasePort1 + 0xd);
738 outb(0x24, link->io.BasePort1 + 0x9);
739 outb(0x04, link->io.BasePort1 + 0xd);
740 }
741
742 /*
743 * irq_level == 0 implies tpnt->can_queue == 0, which
744 * is not supported in 2.6. Thus, only irq_level > 0
745 * will be allowed.
746 *
747 * Possible port_base values are as follows:
748 *
749 * 0x130, 0x230, 0x280, 0x290,
750 * 0x320, 0x330, 0x340, 0x350
751 */
752 port_base = link->io.BasePort1;
753 irq_level = link->irq;
754
755 DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n",
756 port_base, irq_level, USE_FAST_PIO);)
757
758 chip_init(port_base);
759
760 host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data));
761 if (!host) {
762 printk("SYM53C500: Unable to register host, giving up.\n");
763 goto err_release;
764 }
765
766 data = (struct sym53c500_data *)host->hostdata;
767
768 if (irq_level > 0) {
769 if (request_irq(irq_level, SYM53C500_intr, IRQF_SHARED, "SYM53C500", host)) {
770 printk("SYM53C500: unable to allocate IRQ %d\n", irq_level);
771 goto err_free_scsi;
772 }
773 DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level));
774 } else if (irq_level == 0) {
775 DEB(printk("SYM53C500: No interrupts detected\n"));
776 goto err_free_scsi;
777 } else {
778 DEB(printk("SYM53C500: Shouldn't get here!\n"));
779 goto err_free_scsi;
780 }
781
782 host->unique_id = port_base;
783 host->irq = irq_level;
784 host->io_port = port_base;
785 host->n_io_port = 0x10;
786 host->dma_channel = -1;
787
788 /*
789 * Note fast_pio is set to USE_FAST_PIO by
790 * default, but can be changed via "sysfs".
791 */
792 data->fast_pio = USE_FAST_PIO;
793
794 info->host = host;
795
796 if (scsi_add_host(host, NULL))
797 goto err_free_irq;
798
799 scsi_scan_host(host);
800
801 return 0;
802
803 err_free_irq:
804 free_irq(irq_level, host);
805 err_free_scsi:
806 scsi_host_put(host);
807 err_release:
808 release_region(port_base, 0x10);
809 printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n");
810 return -ENODEV;
811
812 failed:
813 SYM53C500_release(link);
814 return -ENODEV;
815 } /* SYM53C500_config */
816
817 static int sym53c500_resume(struct pcmcia_device *link)
818 {
819 struct scsi_info_t *info = link->priv;
820
821 /* See earlier comment about manufacturer IDs. */
822 if ((info->manf_id == MANFID_MACNICA) ||
823 (info->manf_id == MANFID_PIONEER) ||
824 (info->manf_id == 0x0098)) {
825 outb(0x80, link->io.BasePort1 + 0xd);
826 outb(0x24, link->io.BasePort1 + 0x9);
827 outb(0x04, link->io.BasePort1 + 0xd);
828 }
829 /*
830 * If things don't work after a "resume",
831 * this is a good place to start looking.
832 */
833 SYM53C500_int_host_reset(link->io.BasePort1);
834
835 return 0;
836 }
837
838 static void
839 SYM53C500_detach(struct pcmcia_device *link)
840 {
841 dev_dbg(&link->dev, "SYM53C500_detach\n");
842
843 SYM53C500_release(link);
844
845 kfree(link->priv);
846 link->priv = NULL;
847 } /* SYM53C500_detach */
848
849 static int
850 SYM53C500_probe(struct pcmcia_device *link)
851 {
852 struct scsi_info_t *info;
853
854 dev_dbg(&link->dev, "SYM53C500_attach()\n");
855
856 /* Create new SCSI device */
857 info = kzalloc(sizeof(*info), GFP_KERNEL);
858 if (!info)
859 return -ENOMEM;
860 info->p_dev = link;
861 link->priv = info;
862 link->io.NumPorts1 = 16;
863 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
864 link->io.IOAddrLines = 10;
865 link->conf.Attributes = CONF_ENABLE_IRQ;
866 link->conf.IntType = INT_MEMORY_AND_IO;
867
868 return SYM53C500_config(link);
869 } /* SYM53C500_attach */
870
871 MODULE_AUTHOR("Bob Tracy <rct@frus.com>");
872 MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver");
873 MODULE_LICENSE("GPL");
874
875 static struct pcmcia_device_id sym53c500_ids[] = {
876 PCMCIA_DEVICE_PROD_ID12("BASICS by New Media Corporation", "SCSI Sym53C500", 0x23c78a9d, 0x0099e7f7),
877 PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "SCSI Bus Toaster Sym53C500", 0x085a850b, 0x45432eb8),
878 PCMCIA_DEVICE_PROD_ID2("SCSI9000", 0x21648f44),
879 PCMCIA_DEVICE_NULL,
880 };
881 MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids);
882
883 static struct pcmcia_driver sym53c500_cs_driver = {
884 .owner = THIS_MODULE,
885 .drv = {
886 .name = "sym53c500_cs",
887 },
888 .probe = SYM53C500_probe,
889 .remove = SYM53C500_detach,
890 .id_table = sym53c500_ids,
891 .resume = sym53c500_resume,
892 };
893
894 static int __init
895 init_sym53c500_cs(void)
896 {
897 return pcmcia_register_driver(&sym53c500_cs_driver);
898 }
899
900 static void __exit
901 exit_sym53c500_cs(void)
902 {
903 pcmcia_unregister_driver(&sym53c500_cs_driver);
904 }
905
906 module_init(init_sym53c500_cs);
907 module_exit(exit_sym53c500_cs);
Linux kernel - Deliverables
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