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GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / drivers / scsi / pcmcia / sym53c500_cs.c
blob321e390c9120631f07b81434e2dfe853bf78f05c
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.h>
75 #include <pcmcia/cistpl.h>
76 #include <pcmcia/ds.h>
77 #include <pcmcia/ciscode.h>
78
79
80 /* ================================================================== */
81
82 #define SYNC_MODE 0 /* Synchronous transfer mode */
83
84 /* Default configuration */
85 #define C1_IMG 0x07 /* ID=7 */
86 #define C2_IMG 0x48 /* FE SCSI2 */
87 #define C3_IMG 0x20 /* CDB */
88 #define C4_IMG 0x04 /* ANE */
89 #define C5_IMG 0xa4 /* ? changed from b6= AA PI SIE POL */
90 #define C7_IMG 0x80 /* added for SYM53C500 t. corner */
91
92 /* Hardware Registers: offsets from io_port (base) */
93
94 /* Control Register Set 0 */
95 #define TC_LSB 0x00 /* transfer counter lsb */
96 #define TC_MSB 0x01 /* transfer counter msb */
97 #define SCSI_FIFO 0x02 /* scsi fifo register */
98 #define CMD_REG 0x03 /* command register */
99 #define STAT_REG 0x04 /* status register */
100 #define DEST_ID 0x04 /* selection/reselection bus id */
101 #define INT_REG 0x05 /* interrupt status register */
102 #define SRTIMOUT 0x05 /* select/reselect timeout reg */
103 #define SEQ_REG 0x06 /* sequence step register */
104 #define SYNCPRD 0x06 /* synchronous transfer period */
105 #define FIFO_FLAGS 0x07 /* indicates # of bytes in fifo */
106 #define SYNCOFF 0x07 /* synchronous offset register */
107 #define CONFIG1 0x08 /* configuration register */
108 #define CLKCONV 0x09 /* clock conversion register */
109 /* #define TESTREG 0x0A */ /* test mode register */
110 #define CONFIG2 0x0B /* configuration 2 register */
111 #define CONFIG3 0x0C /* configuration 3 register */
112 #define CONFIG4 0x0D /* configuration 4 register */
113 #define TC_HIGH 0x0E /* transfer counter high */
114 /* #define FIFO_BOTTOM 0x0F */ /* reserve FIFO byte register */
115
116 /* Control Register Set 1 */
117 /* #define JUMPER_SENSE 0x00 */ /* jumper sense port reg (r/w) */
118 /* #define SRAM_PTR 0x01 */ /* SRAM address pointer reg (r/w) */
119 /* #define SRAM_DATA 0x02 */ /* SRAM data register (r/w) */
120 #define PIO_FIFO 0x04 /* PIO FIFO registers (r/w) */
121 /* #define PIO_FIFO1 0x05 */ /* */
122 /* #define PIO_FIFO2 0x06 */ /* */
123 /* #define PIO_FIFO3 0x07 */ /* */
124 #define PIO_STATUS 0x08 /* PIO status (r/w) */
125 /* #define ATA_CMD 0x09 */ /* ATA command/status reg (r/w) */
126 /* #define ATA_ERR 0x0A */ /* ATA features/error reg (r/w) */
127 #define PIO_FLAG 0x0B /* PIO flag interrupt enable (r/w) */
128 #define CONFIG5 0x09 /* configuration 5 register */
129 /* #define SIGNATURE 0x0E */ /* signature register (r) */
130 /* #define CONFIG6 0x0F */ /* configuration 6 register (r) */
131 #define CONFIG7 0x0d
132
133 /* select register set 0 */
134 #define REG0(x) (outb(C4_IMG, (x) + CONFIG4))
135 /* select register set 1 */
136 #define REG1(x) outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5)
137
138 #if SYM53C500_DEBUG
139 #define DEB(x) x
140 #else
141 #define DEB(x)
142 #endif
143
144 #if VERBOSE_SYM53C500_DEBUG
145 #define VDEB(x) x
146 #else
147 #define VDEB(x)
148 #endif
149
150 #define LOAD_DMA_COUNT(x, count) \
151 outb(count & 0xff, (x) + TC_LSB); \
152 outb((count >> 8) & 0xff, (x) + TC_MSB); \
153 outb((count >> 16) & 0xff, (x) + TC_HIGH);
154
155 /* Chip commands */
156 #define DMA_OP 0x80
157
158 #define SCSI_NOP 0x00
159 #define FLUSH_FIFO 0x01
160 #define CHIP_RESET 0x02
161 #define SCSI_RESET 0x03
162 #define RESELECT 0x40
163 #define SELECT_NO_ATN 0x41
164 #define SELECT_ATN 0x42
165 #define SELECT_ATN_STOP 0x43
166 #define ENABLE_SEL 0x44
167 #define DISABLE_SEL 0x45
168 #define SELECT_ATN3 0x46
169 #define RESELECT3 0x47
170 #define TRANSFER_INFO 0x10
171 #define INIT_CMD_COMPLETE 0x11
172 #define MSG_ACCEPT 0x12
173 #define TRANSFER_PAD 0x18
174 #define SET_ATN 0x1a
175 #define RESET_ATN 0x1b
176 #define SEND_MSG 0x20
177 #define SEND_STATUS 0x21
178 #define SEND_DATA 0x22
179 #define DISCONN_SEQ 0x23
180 #define TERMINATE_SEQ 0x24
181 #define TARG_CMD_COMPLETE 0x25
182 #define DISCONN 0x27
183 #define RECV_MSG 0x28
184 #define RECV_CMD 0x29
185 #define RECV_DATA 0x2a
186 #define RECV_CMD_SEQ 0x2b
187 #define TARGET_ABORT_DMA 0x04
188
189 /* ================================================================== */
190
191 struct scsi_info_t {
192 struct pcmcia_device *p_dev;
193 struct Scsi_Host *host;
194 unsigned short manf_id;
195 };
196
197 /*
198 * Repository for per-instance host data.
199 */
200 struct sym53c500_data {
201 struct scsi_cmnd *current_SC;
202 int fast_pio;
203 };
204
205 enum Phase {
206 idle,
207 data_out,
208 data_in,
209 command_ph,
210 status_ph,
211 message_out,
212 message_in
213 };
214
215 /* ================================================================== */
216
217 static void
218 chip_init(int io_port)
219 {
220 REG1(io_port);
221 outb(0x01, io_port + PIO_STATUS);
222 outb(0x00, io_port + PIO_FLAG);
223
224 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
225 outb(C3_IMG, io_port + CONFIG3);
226 outb(C2_IMG, io_port + CONFIG2);
227 outb(C1_IMG, io_port + CONFIG1);
228
229 outb(0x05, io_port + CLKCONV); /* clock conversion factor */
230 outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */
231 outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */
232 outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */
233 }
234
235 static void
236 SYM53C500_int_host_reset(int io_port)
237 {
238 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
239 outb(CHIP_RESET, io_port + CMD_REG);
240 outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */
241 outb(SCSI_RESET, io_port + CMD_REG);
242 chip_init(io_port);
243 }
244
245 static __inline__ int
246 SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
247 {
248 int i;
249 int len; /* current scsi fifo size */
250
251 REG1(base);
252 while (reqlen) {
253 i = inb(base + PIO_STATUS);
254 /* VDEB(printk("pio_status=%x\n", i)); */
255 if (i & 0x80)
256 return 0;
257
258 switch (i & 0x1e) {
259 default:
260 case 0x10: /* fifo empty */
261 len = 0;
262 break;
263 case 0x0:
264 len = 1;
265 break;
266 case 0x8: /* fifo 1/3 full */
267 len = 42;
268 break;
269 case 0xc: /* fifo 2/3 full */
270 len = 84;
271 break;
272 case 0xe: /* fifo full */
273 len = 128;
274 break;
275 }
276
277 if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */
278 return 0;
279 }
280
281 if (len) {
282 if (len > reqlen)
283 len = reqlen;
284
285 if (fast_pio && len > 3) {
286 insl(base + PIO_FIFO, request, len >> 2);
287 request += len & 0xfc;
288 reqlen -= len & 0xfc;
289 } else {
290 while (len--) {
291 *request++ = inb(base + PIO_FIFO);
292 reqlen--;
293 }
294 }
295 }
296 }
297 return 0;
298 }
299
300 static __inline__ int
301 SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
302 {
303 int i = 0;
304 int len; /* current scsi fifo size */
305
306 REG1(base);
307 while (reqlen && !(i & 0x40)) {
308 i = inb(base + PIO_STATUS);
309 /* VDEB(printk("pio_status=%x\n", i)); */
310 if (i & 0x80) /* error */
311 return 0;
312
313 switch (i & 0x1e) {
314 case 0x10:
315 len = 128;
316 break;
317 case 0x0:
318 len = 84;
319 break;
320 case 0x8:
321 len = 42;
322 break;
323 case 0xc:
324 len = 1;
325 break;
326 default:
327 case 0xe:
328 len = 0;
329 break;
330 }
331
332 if (len) {
333 if (len > reqlen)
334 len = reqlen;
335
336 if (fast_pio && len > 3) {
337 outsl(base + PIO_FIFO, request, len >> 2);
338 request += len & 0xfc;
339 reqlen -= len & 0xfc;
340 } else {
341 while (len--) {
342 outb(*request++, base + PIO_FIFO);
343 reqlen--;
344 }
345 }
346 }
347 }
348 return 0;
349 }
350
351 static irqreturn_t
352 SYM53C500_intr(int irq, void *dev_id)
353 {
354 unsigned long flags;
355 struct Scsi_Host *dev = dev_id;
356 DEB(unsigned char fifo_size;)
357 DEB(unsigned char seq_reg;)
358 unsigned char status, int_reg;
359 unsigned char pio_status;
360 int port_base = dev->io_port;
361 struct sym53c500_data *data =
362 (struct sym53c500_data *)dev->hostdata;
363 struct scsi_cmnd *curSC = data->current_SC;
364 int fast_pio = data->fast_pio;
365
366 spin_lock_irqsave(dev->host_lock, flags);
367
368 VDEB(printk("SYM53C500_intr called\n"));
369
370 REG1(port_base);
371 pio_status = inb(port_base + PIO_STATUS);
372 REG0(port_base);
373 status = inb(port_base + STAT_REG);
374 DEB(seq_reg = inb(port_base + SEQ_REG));
375 int_reg = inb(port_base + INT_REG);
376 DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f);
377
378 #if SYM53C500_DEBUG
379 printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x",
380 status, seq_reg, int_reg, fifo_size);
381 printk(", pio=%02x\n", pio_status);
382 #endif /* SYM53C500_DEBUG */
383
384 if (int_reg & 0x80) { /* SCSI reset intr */
385 DEB(printk("SYM53C500: reset intr received\n"));
386 curSC->result = DID_RESET << 16;
387 goto idle_out;
388 }
389
390 if (pio_status & 0x80) {
391 printk("SYM53C500: Warning: PIO error!\n");
392 curSC->result = DID_ERROR << 16;
393 goto idle_out;
394 }
395
396 if (status & 0x20) { /* Parity error */
397 printk("SYM53C500: Warning: parity error!\n");
398 curSC->result = DID_PARITY << 16;
399 goto idle_out;
400 }
401
402 if (status & 0x40) { /* Gross error */
403 printk("SYM53C500: Warning: gross error!\n");
404 curSC->result = DID_ERROR << 16;
405 goto idle_out;
406 }
407
408 if (int_reg & 0x20) { /* Disconnect */
409 DEB(printk("SYM53C500: disconnect intr received\n"));
410 if (curSC->SCp.phase != message_in) { /* Unexpected disconnect */
411 curSC->result = DID_NO_CONNECT << 16;
412 } else { /* Command complete, return status and message */
413 curSC->result = (curSC->SCp.Status & 0xff)
414 | ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16);
415 }
416 goto idle_out;
417 }
418
419 switch (status & 0x07) { /* scsi phase */
420 case 0x00: /* DATA-OUT */
421 if (int_reg & 0x10) { /* Target requesting info transfer */
422 struct scatterlist *sg;
423 int i;
424
425 curSC->SCp.phase = data_out;
426 VDEB(printk("SYM53C500: Data-Out phase\n"));
427 outb(FLUSH_FIFO, port_base + CMD_REG);
428 LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */
429 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
430
431 scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {
432 SYM53C500_pio_write(fast_pio, port_base,
433 sg_virt(sg), sg->length);
434 }
435 REG0(port_base);
436 }
437 break;
438
439 case 0x01: /* DATA-IN */
440 if (int_reg & 0x10) { /* Target requesting info transfer */
441 struct scatterlist *sg;
442 int i;
443
444 curSC->SCp.phase = data_in;
445 VDEB(printk("SYM53C500: Data-In phase\n"));
446 outb(FLUSH_FIFO, port_base + CMD_REG);
447 LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */
448 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
449
450 scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {
451 SYM53C500_pio_read(fast_pio, port_base,
452 sg_virt(sg), sg->length);
453 }
454 REG0(port_base);
455 }
456 break;
457
458 case 0x02: /* COMMAND */
459 curSC->SCp.phase = command_ph;
460 printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n");
461 break;
462
463 case 0x03: /* STATUS */
464 curSC->SCp.phase = status_ph;
465 VDEB(printk("SYM53C500: Status phase\n"));
466 outb(FLUSH_FIFO, port_base + CMD_REG);
467 outb(INIT_CMD_COMPLETE, port_base + CMD_REG);
468 break;
469
470 case 0x04: /* Reserved */
471 case 0x05: /* Reserved */
472 printk("SYM53C500: WARNING: Reserved phase!!!\n");
473 break;
474
475 case 0x06: /* MESSAGE-OUT */
476 DEB(printk("SYM53C500: Message-Out phase\n"));
477 curSC->SCp.phase = message_out;
478 outb(SET_ATN, port_base + CMD_REG); /* Reject the message */
479 outb(MSG_ACCEPT, port_base + CMD_REG);
480 break;
481
482 case 0x07: /* MESSAGE-IN */
483 VDEB(printk("SYM53C500: Message-In phase\n"));
484 curSC->SCp.phase = message_in;
485
486 curSC->SCp.Status = inb(port_base + SCSI_FIFO);
487 curSC->SCp.Message = inb(port_base + SCSI_FIFO);
488
489 VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f));
490 DEB(printk("Status = %02x Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message));
491
492 if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) {
493 outb(SET_ATN, port_base + CMD_REG); /* Reject message */
494 DEB(printk("Discarding SAVE_POINTERS message\n"));
495 }
496 outb(MSG_ACCEPT, port_base + CMD_REG);
497 break;
498 }
499 out:
500 spin_unlock_irqrestore(dev->host_lock, flags);
501 return IRQ_HANDLED;
502
503 idle_out:
504 curSC->SCp.phase = idle;
505 curSC->scsi_done(curSC);
506 goto out;
507 }
508
509 static void
510 SYM53C500_release(struct pcmcia_device *link)
511 {
512 struct scsi_info_t *info = link->priv;
513 struct Scsi_Host *shost = info->host;
514
515 dev_dbg(&link->dev, "SYM53C500_release\n");
516
517 /*
518 * Do this before releasing/freeing resources.
519 */
520 scsi_remove_host(shost);
521
522 /*
523 * Interrupts getting hosed on card removal. Try
524 * the following code, mostly from qlogicfas.c.
525 */
526 if (shost->irq)
527 free_irq(shost->irq, shost);
528 if (shost->io_port && shost->n_io_port)
529 release_region(shost->io_port, shost->n_io_port);
530
531 pcmcia_disable_device(link);
532
533 scsi_host_put(shost);
534 } /* SYM53C500_release */
535
536 static const char*
537 SYM53C500_info(struct Scsi_Host *SChost)
538 {
539 static char info_msg[256];
540 struct sym53c500_data *data =
541 (struct sym53c500_data *)SChost->hostdata;
542
543 DEB(printk("SYM53C500_info called\n"));
544 (void)snprintf(info_msg, sizeof(info_msg),
545 "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.",
546 SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow");
547 return (info_msg);
548 }
549
550 static int
551 SYM53C500_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
552 {
553 int i;
554 int port_base = SCpnt->device->host->io_port;
555 struct sym53c500_data *data =
556 (struct sym53c500_data *)SCpnt->device->host->hostdata;
557
558 VDEB(printk("SYM53C500_queue called\n"));
559
560 DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n",
561 SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id,
562 SCpnt->device->lun, scsi_bufflen(SCpnt)));
563
564 VDEB(for (i = 0; i < SCpnt->cmd_len; i++)
565 printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i]));
566 VDEB(printk("\n"));
567
568 data->current_SC = SCpnt;
569 data->current_SC->scsi_done = done;
570 data->current_SC->SCp.phase = command_ph;
571 data->current_SC->SCp.Status = 0;
572 data->current_SC->SCp.Message = 0;
573
574 /* We are locked here already by the mid layer */
575 REG0(port_base);
576 outb(scmd_id(SCpnt), port_base + DEST_ID); /* set destination */
577 outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */
578
579 for (i = 0; i < SCpnt->cmd_len; i++) {
580 outb(SCpnt->cmnd[i], port_base + SCSI_FIFO);
581 }
582 outb(SELECT_NO_ATN, port_base + CMD_REG);
583
584 return 0;
585 }
586
587 static int
588 SYM53C500_host_reset(struct scsi_cmnd *SCpnt)
589 {
590 int port_base = SCpnt->device->host->io_port;
591
592 DEB(printk("SYM53C500_host_reset called\n"));
593 spin_lock_irq(SCpnt->device->host->host_lock);
594 SYM53C500_int_host_reset(port_base);
595 spin_unlock_irq(SCpnt->device->host->host_lock);
596
597 return SUCCESS;
598 }
599
600 static int
601 SYM53C500_biosparm(struct scsi_device *disk,
602 struct block_device *dev,
603 sector_t capacity, int *info_array)
604 {
605 int size;
606
607 DEB(printk("SYM53C500_biosparm called\n"));
608
609 size = capacity;
610 info_array[0] = 64; /* heads */
611 info_array[1] = 32; /* sectors */
612 info_array[2] = size >> 11; /* cylinders */
613 if (info_array[2] > 1024) { /* big disk */
614 info_array[0] = 255;
615 info_array[1] = 63;
616 info_array[2] = size / (255 * 63);
617 }
618 return 0;
619 }
620
621 static ssize_t
622 SYM53C500_show_pio(struct device *dev, struct device_attribute *attr,
623 char *buf)
624 {
625 struct Scsi_Host *SHp = class_to_shost(dev);
626 struct sym53c500_data *data =
627 (struct sym53c500_data *)SHp->hostdata;
628
629 return snprintf(buf, 4, "%d\n", data->fast_pio);
630 }
631
632 static ssize_t
633 SYM53C500_store_pio(struct device *dev, struct device_attribute *attr,
634 const char *buf, size_t count)
635 {
636 int pio;
637 struct Scsi_Host *SHp = class_to_shost(dev);
638 struct sym53c500_data *data =
639 (struct sym53c500_data *)SHp->hostdata;
640
641 pio = simple_strtoul(buf, NULL, 0);
642 if (pio == 0 || pio == 1) {
643 data->fast_pio = pio;
644 return count;
645 }
646 else
647 return -EINVAL;
648 }
649
650 /*
651 * SCSI HBA device attributes we want to
652 * make available via sysfs.
653 */
654 static struct device_attribute SYM53C500_pio_attr = {
655 .attr = {
656 .name = "fast_pio",
657 .mode = (S_IRUGO | S_IWUSR),
658 },
659 .show = SYM53C500_show_pio,
660 .store = SYM53C500_store_pio,
661 };
662
663 static struct device_attribute *SYM53C500_shost_attrs[] = {
664 &SYM53C500_pio_attr,
665 NULL,
666 };
667
668 /*
669 * scsi_host_template initializer
670 */
671 static struct scsi_host_template sym53c500_driver_template = {
672 .module = THIS_MODULE,
673 .name = "SYM53C500",
674 .info = SYM53C500_info,
675 .queuecommand = SYM53C500_queue,
676 .eh_host_reset_handler = SYM53C500_host_reset,
677 .bios_param = SYM53C500_biosparm,
678 .proc_name = "SYM53C500",
679 .can_queue = 1,
680 .this_id = 7,
681 .sg_tablesize = 32,
682 .cmd_per_lun = 1,
683 .use_clustering = ENABLE_CLUSTERING,
684 .shost_attrs = SYM53C500_shost_attrs
685 };
686
687 static int SYM53C500_config_check(struct pcmcia_device *p_dev,
688 cistpl_cftable_entry_t *cfg,
689 cistpl_cftable_entry_t *dflt,
690 unsigned int vcc,
691 void *priv_data)
692 {
693 p_dev->io_lines = 10;
694 p_dev->resource[0]->start = cfg->io.win[0].base;
695 p_dev->resource[0]->end = cfg->io.win[0].len;
696
697 if (p_dev->resource[0]->start == 0)
698 return -ENODEV;
699
700 return pcmcia_request_io(p_dev);
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->resource[0]->start + 0xd);
738 outb(0x24, link->resource[0]->start + 0x9);
739 outb(0x04, link->resource[0]->start + 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->resource[0]->start;
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->resource[0]->start + 0xd);
826 outb(0x24, link->resource[0]->start + 0x9);
827 outb(0x04, link->resource[0]->start + 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->resource[0]->start);
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->resource[0]->end = 16;
863 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
864 link->conf.Attributes = CONF_ENABLE_IRQ;
865 link->conf.IntType = INT_MEMORY_AND_IO;
866
867 return SYM53C500_config(link);
868 } /* SYM53C500_attach */
869
870 MODULE_AUTHOR("Bob Tracy <rct@frus.com>");
871 MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver");
872 MODULE_LICENSE("GPL");
873
874 static struct pcmcia_device_id sym53c500_ids[] = {
875 PCMCIA_DEVICE_PROD_ID12("BASICS by New Media Corporation", "SCSI Sym53C500", 0x23c78a9d, 0x0099e7f7),
876 PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "SCSI Bus Toaster Sym53C500", 0x085a850b, 0x45432eb8),
877 PCMCIA_DEVICE_PROD_ID2("SCSI9000", 0x21648f44),
878 PCMCIA_DEVICE_NULL,
879 };
880 MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids);
881
882 static struct pcmcia_driver sym53c500_cs_driver = {
883 .owner = THIS_MODULE,
884 .drv = {
885 .name = "sym53c500_cs",
886 },
887 .probe = SYM53C500_probe,
888 .remove = SYM53C500_detach,
889 .id_table = sym53c500_ids,
890 .resume = sym53c500_resume,
891 };
892
893 static int __init
894 init_sym53c500_cs(void)
895 {
896 return pcmcia_register_driver(&sym53c500_cs_driver);
897 }
898
899 static void __exit
900 exit_sym53c500_cs(void)
901 {
902 pcmcia_unregister_driver(&sym53c500_cs_driver);
903 }
904
905 module_init(init_sym53c500_cs);
906 module_exit(exit_sym53c500_cs);
Tomato firmware and modifications.