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MOXA linux-2.6.x / linux-2.6.9-uc0 from sdlinux-moxaart.tgz
[linux-2.6.9-moxart.git] / drivers / scsi / pcmcia / sym53c500_cs.c
blob4277db3b6fee4eaca7787d607fd1f4e868ae9b77
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 0.9b 2004/05/10 (Bob Tracy)";
89 #else
90 #define DEBUG(n, args...)
91 #endif
92
93 /* ================================================================== */
94
95 /* Parameters that can be set with 'insmod' */
96
97 /* Bit map of interrupts to choose from */
98 static unsigned int irq_mask = 0xdeb8; /* 3, 6, 7, 9-12, 14, 15 */
99 static int irq_list[4] = { -1 };
100 static int num_irqs = 1;
101
102 module_param(irq_mask, int, 0);
103 MODULE_PARM_DESC(irq_mask, "IRQ mask bits (default: 0xdeb8)");
104 module_param_array(irq_list, int, num_irqs, 0);
105 MODULE_PARM_DESC(irq_list, "Comma-separated list of up to 4 IRQs to try (default: auto select).");
106
107 /* ================================================================== */
108
109 #define SYNC_MODE 0 /* Synchronous transfer mode */
110
111 /* Default configuration */
112 #define C1_IMG 0x07 /* ID=7 */
113 #define C2_IMG 0x48 /* FE SCSI2 */
114 #define C3_IMG 0x20 /* CDB */
115 #define C4_IMG 0x04 /* ANE */
116 #define C5_IMG 0xa4 /* ? changed from b6= AA PI SIE POL */
117 #define C7_IMG 0x80 /* added for SYM53C500 t. corner */
118
119 /* Hardware Registers: offsets from io_port (base) */
120
121 /* Control Register Set 0 */
122 #define TC_LSB 0x00 /* transfer counter lsb */
123 #define TC_MSB 0x01 /* transfer counter msb */
124 #define SCSI_FIFO 0x02 /* scsi fifo register */
125 #define CMD_REG 0x03 /* command register */
126 #define STAT_REG 0x04 /* status register */
127 #define DEST_ID 0x04 /* selection/reselection bus id */
128 #define INT_REG 0x05 /* interrupt status register */
129 #define SRTIMOUT 0x05 /* select/reselect timeout reg */
130 #define SEQ_REG 0x06 /* sequence step register */
131 #define SYNCPRD 0x06 /* synchronous transfer period */
132 #define FIFO_FLAGS 0x07 /* indicates # of bytes in fifo */
133 #define SYNCOFF 0x07 /* synchronous offset register */
134 #define CONFIG1 0x08 /* configuration register */
135 #define CLKCONV 0x09 /* clock conversion register */
136 /* #define TESTREG 0x0A */ /* test mode register */
137 #define CONFIG2 0x0B /* configuration 2 register */
138 #define CONFIG3 0x0C /* configuration 3 register */
139 #define CONFIG4 0x0D /* configuration 4 register */
140 #define TC_HIGH 0x0E /* transfer counter high */
141 /* #define FIFO_BOTTOM 0x0F */ /* reserve FIFO byte register */
142
143 /* Control Register Set 1 */
144 /* #define JUMPER_SENSE 0x00 */ /* jumper sense port reg (r/w) */
145 /* #define SRAM_PTR 0x01 */ /* SRAM address pointer reg (r/w) */
146 /* #define SRAM_DATA 0x02 */ /* SRAM data register (r/w) */
147 #define PIO_FIFO 0x04 /* PIO FIFO registers (r/w) */
148 /* #define PIO_FIFO1 0x05 */ /* */
149 /* #define PIO_FIFO2 0x06 */ /* */
150 /* #define PIO_FIFO3 0x07 */ /* */
151 #define PIO_STATUS 0x08 /* PIO status (r/w) */
152 /* #define ATA_CMD 0x09 */ /* ATA command/status reg (r/w) */
153 /* #define ATA_ERR 0x0A */ /* ATA features/error reg (r/w) */
154 #define PIO_FLAG 0x0B /* PIO flag interrupt enable (r/w) */
155 #define CONFIG5 0x09 /* configuration 5 register */
156 /* #define SIGNATURE 0x0E */ /* signature register (r) */
157 /* #define CONFIG6 0x0F */ /* configuration 6 register (r) */
158 #define CONFIG7 0x0d
159
160 /* select register set 0 */
161 #define REG0(x) (outb(C4_IMG, (x) + CONFIG4))
162 /* select register set 1 */
163 #define REG1(x) outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5)
164
165 #if SYM53C500_DEBUG
166 #define DEB(x) x
167 #else
168 #define DEB(x)
169 #endif
170
171 #if VERBOSE_SYM53C500_DEBUG
172 #define VDEB(x) x
173 #else
174 #define VDEB(x)
175 #endif
176
177 #define LOAD_DMA_COUNT(x, count) \
178 outb(count & 0xff, (x) + TC_LSB); \
179 outb((count >> 8) & 0xff, (x) + TC_MSB); \
180 outb((count >> 16) & 0xff, (x) + TC_HIGH);
181
182 /* Chip commands */
183 #define DMA_OP 0x80
184
185 #define SCSI_NOP 0x00
186 #define FLUSH_FIFO 0x01
187 #define CHIP_RESET 0x02
188 #define SCSI_RESET 0x03
189 #define RESELECT 0x40
190 #define SELECT_NO_ATN 0x41
191 #define SELECT_ATN 0x42
192 #define SELECT_ATN_STOP 0x43
193 #define ENABLE_SEL 0x44
194 #define DISABLE_SEL 0x45
195 #define SELECT_ATN3 0x46
196 #define RESELECT3 0x47
197 #define TRANSFER_INFO 0x10
198 #define INIT_CMD_COMPLETE 0x11
199 #define MSG_ACCEPT 0x12
200 #define TRANSFER_PAD 0x18
201 #define SET_ATN 0x1a
202 #define RESET_ATN 0x1b
203 #define SEND_MSG 0x20
204 #define SEND_STATUS 0x21
205 #define SEND_DATA 0x22
206 #define DISCONN_SEQ 0x23
207 #define TERMINATE_SEQ 0x24
208 #define TARG_CMD_COMPLETE 0x25
209 #define DISCONN 0x27
210 #define RECV_MSG 0x28
211 #define RECV_CMD 0x29
212 #define RECV_DATA 0x2a
213 #define RECV_CMD_SEQ 0x2b
214 #define TARGET_ABORT_DMA 0x04
215
216 /* ================================================================== */
217
218 struct scsi_info_t {
219 dev_link_t link;
220 dev_node_t node;
221 struct Scsi_Host *host;
222 unsigned short manf_id;
223 };
224
225 /*
226 * Repository for per-instance host data.
227 */
228 struct sym53c500_data {
229 struct scsi_cmnd *current_SC;
230 int fast_pio;
231 };
232
233 enum Phase {
234 idle,
235 data_out,
236 data_in,
237 command_ph,
238 status_ph,
239 message_out,
240 message_in
241 };
242
243 /* ================================================================== */
244
245 /*
246 * Global (within this module) variables other than
247 * sym53c500_driver_template (the scsi_host_template).
248 */
249 static dev_link_t *dev_list;
250 static dev_info_t dev_info = "sym53c500_cs";
251
252 /* ================================================================== */
253
254 static void
255 chip_init(int io_port)
256 {
257 REG1(io_port);
258 outb(0x01, io_port + PIO_STATUS);
259 outb(0x00, io_port + PIO_FLAG);
260
261 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
262 outb(C3_IMG, io_port + CONFIG3);
263 outb(C2_IMG, io_port + CONFIG2);
264 outb(C1_IMG, io_port + CONFIG1);
265
266 outb(0x05, io_port + CLKCONV); /* clock conversion factor */
267 outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */
268 outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */
269 outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */
270 }
271
272 static void
273 SYM53C500_int_host_reset(int io_port)
274 {
275 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
276 outb(CHIP_RESET, io_port + CMD_REG);
277 outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */
278 outb(SCSI_RESET, io_port + CMD_REG);
279 chip_init(io_port);
280 }
281
282 static __inline__ int
283 SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
284 {
285 int i;
286 int len; /* current scsi fifo size */
287
288 REG1(base);
289 while (reqlen) {
290 i = inb(base + PIO_STATUS);
291 /* VDEB(printk("pio_status=%x\n", i)); */
292 if (i & 0x80)
293 return 0;
294
295 switch (i & 0x1e) {
296 default:
297 case 0x10: /* fifo empty */
298 len = 0;
299 break;
300 case 0x0:
301 len = 1;
302 break;
303 case 0x8: /* fifo 1/3 full */
304 len = 42;
305 break;
306 case 0xc: /* fifo 2/3 full */
307 len = 84;
308 break;
309 case 0xe: /* fifo full */
310 len = 128;
311 break;
312 }
313
314 if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */
315 return 0;
316 }
317
318 if (len) {
319 if (len > reqlen)
320 len = reqlen;
321
322 if (fast_pio && len > 3) {
323 insl(base + PIO_FIFO, request, len >> 2);
324 request += len & 0xfc;
325 reqlen -= len & 0xfc;
326 } else {
327 while (len--) {
328 *request++ = inb(base + PIO_FIFO);
329 reqlen--;
330 }
331 }
332 }
333 }
334 return 0;
335 }
336
337 static __inline__ int
338 SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
339 {
340 int i = 0;
341 int len; /* current scsi fifo size */
342
343 REG1(base);
344 while (reqlen && !(i & 0x40)) {
345 i = inb(base + PIO_STATUS);
346 /* VDEB(printk("pio_status=%x\n", i)); */
347 if (i & 0x80) /* error */
348 return 0;
349
350 switch (i & 0x1e) {
351 case 0x10:
352 len = 128;
353 break;
354 case 0x0:
355 len = 84;
356 break;
357 case 0x8:
358 len = 42;
359 break;
360 case 0xc:
361 len = 1;
362 break;
363 default:
364 case 0xe:
365 len = 0;
366 break;
367 }
368
369 if (len) {
370 if (len > reqlen)
371 len = reqlen;
372
373 if (fast_pio && len > 3) {
374 outsl(base + PIO_FIFO, request, len >> 2);
375 request += len & 0xfc;
376 reqlen -= len & 0xfc;
377 } else {
378 while (len--) {
379 outb(*request++, base + PIO_FIFO);
380 reqlen--;
381 }
382 }
383 }
384 }
385 return 0;
386 }
387
388 static irqreturn_t
389 SYM53C500_intr(int irq, void *dev_id, struct pt_regs *regs)
390 {
391 unsigned long flags;
392 struct Scsi_Host *dev = dev_id;
393 DEB(unsigned char fifo_size;)
394 DEB(unsigned char seq_reg;)
395 unsigned char status, int_reg;
396 unsigned char pio_status;
397 struct scatterlist *sglist;
398 unsigned int sgcount;
399 int port_base = dev->io_port;
400 struct sym53c500_data *data =
401 (struct sym53c500_data *)dev->hostdata;
402 struct scsi_cmnd *curSC = data->current_SC;
403 int fast_pio = data->fast_pio;
404
405 spin_lock_irqsave(dev->host_lock, flags);
406
407 VDEB(printk("SYM53C500_intr called\n"));
408
409 REG1(port_base);
410 pio_status = inb(port_base + PIO_STATUS);
411 REG0(port_base);
412 status = inb(port_base + STAT_REG);
413 DEB(seq_reg = inb(port_base + SEQ_REG));
414 int_reg = inb(port_base + INT_REG);
415 DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f);
416
417 #if SYM53C500_DEBUG
418 printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x",
419 status, seq_reg, int_reg, fifo_size);
420 printk(", pio=%02x\n", pio_status);
421 #endif /* SYM53C500_DEBUG */
422
423 if (int_reg & 0x80) { /* SCSI reset intr */
424 DEB(printk("SYM53C500: reset intr received\n"));
425 curSC->result = DID_RESET << 16;
426 goto idle_out;
427 }
428
429 if (pio_status & 0x80) {
430 printk("SYM53C500: Warning: PIO error!\n");
431 curSC->result = DID_ERROR << 16;
432 goto idle_out;
433 }
434
435 if (status & 0x20) { /* Parity error */
436 printk("SYM53C500: Warning: parity error!\n");
437 curSC->result = DID_PARITY << 16;
438 goto idle_out;
439 }
440
441 if (status & 0x40) { /* Gross error */
442 printk("SYM53C500: Warning: gross error!\n");
443 curSC->result = DID_ERROR << 16;
444 goto idle_out;
445 }
446
447 if (int_reg & 0x20) { /* Disconnect */
448 DEB(printk("SYM53C500: disconnect intr received\n"));
449 if (curSC->SCp.phase != message_in) { /* Unexpected disconnect */
450 curSC->result = DID_NO_CONNECT << 16;
451 } else { /* Command complete, return status and message */
452 curSC->result = (curSC->SCp.Status & 0xff)
453 | ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16);
454 }
455 goto idle_out;
456 }
457
458 switch (status & 0x07) { /* scsi phase */
459 case 0x00: /* DATA-OUT */
460 if (int_reg & 0x10) { /* Target requesting info transfer */
461 curSC->SCp.phase = data_out;
462 VDEB(printk("SYM53C500: Data-Out phase\n"));
463 outb(FLUSH_FIFO, port_base + CMD_REG);
464 LOAD_DMA_COUNT(port_base, curSC->request_bufflen); /* Max transfer size */
465 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
466 if (!curSC->use_sg) /* Don't use scatter-gather */
467 SYM53C500_pio_write(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen);
468 else { /* use scatter-gather */
469 sgcount = curSC->use_sg;
470 sglist = curSC->request_buffer;
471 while (sgcount--) {
472 SYM53C500_pio_write(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length);
473 sglist++;
474 }
475 }
476 REG0(port_base);
477 }
478 break;
479
480 case 0x01: /* DATA-IN */
481 if (int_reg & 0x10) { /* Target requesting info transfer */
482 curSC->SCp.phase = data_in;
483 VDEB(printk("SYM53C500: Data-In phase\n"));
484 outb(FLUSH_FIFO, port_base + CMD_REG);
485 LOAD_DMA_COUNT(port_base, curSC->request_bufflen); /* Max transfer size */
486 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
487 if (!curSC->use_sg) /* Don't use scatter-gather */
488 SYM53C500_pio_read(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen);
489 else { /* Use scatter-gather */
490 sgcount = curSC->use_sg;
491 sglist = curSC->request_buffer;
492 while (sgcount--) {
493 SYM53C500_pio_read(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length);
494 sglist++;
495 }
496 }
497 REG0(port_base);
498 }
499 break;
500
501 case 0x02: /* COMMAND */
502 curSC->SCp.phase = command_ph;
503 printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n");
504 break;
505
506 case 0x03: /* STATUS */
507 curSC->SCp.phase = status_ph;
508 VDEB(printk("SYM53C500: Status phase\n"));
509 outb(FLUSH_FIFO, port_base + CMD_REG);
510 outb(INIT_CMD_COMPLETE, port_base + CMD_REG);
511 break;
512
513 case 0x04: /* Reserved */
514 case 0x05: /* Reserved */
515 printk("SYM53C500: WARNING: Reserved phase!!!\n");
516 break;
517
518 case 0x06: /* MESSAGE-OUT */
519 DEB(printk("SYM53C500: Message-Out phase\n"));
520 curSC->SCp.phase = message_out;
521 outb(SET_ATN, port_base + CMD_REG); /* Reject the message */
522 outb(MSG_ACCEPT, port_base + CMD_REG);
523 break;
524
525 case 0x07: /* MESSAGE-IN */
526 VDEB(printk("SYM53C500: Message-In phase\n"));
527 curSC->SCp.phase = message_in;
528
529 curSC->SCp.Status = inb(port_base + SCSI_FIFO);
530 curSC->SCp.Message = inb(port_base + SCSI_FIFO);
531
532 VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f));
533 DEB(printk("Status = %02x Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message));
534
535 if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) {
536 outb(SET_ATN, port_base + CMD_REG); /* Reject message */
537 DEB(printk("Discarding SAVE_POINTERS message\n"));
538 }
539 outb(MSG_ACCEPT, port_base + CMD_REG);
540 break;
541 }
542 out:
543 spin_unlock_irqrestore(dev->host_lock, flags);
544 return IRQ_HANDLED;
545
546 idle_out:
547 curSC->SCp.phase = idle;
548 curSC->scsi_done(curSC);
549 goto out;
550 }
551
552 static void
553 SYM53C500_release(dev_link_t *link)
554 {
555 struct scsi_info_t *info = link->priv;
556 struct Scsi_Host *shost = info->host;
557
558 DEBUG(0, "SYM53C500_release(0x%p)\n", link);
559
560 /*
561 * Do this before releasing/freeing resources.
562 */
563 scsi_remove_host(shost);
564
565 /*
566 * Interrupts getting hosed on card removal. Try
567 * the following code, mostly from qlogicfas.c.
568 */
569 if (shost->irq)
570 free_irq(shost->irq, shost);
571 if (shost->dma_channel != 0xff)
572 free_dma(shost->dma_channel);
573 if (shost->io_port && shost->n_io_port)
574 release_region(shost->io_port, shost->n_io_port);
575
576 link->dev = NULL;
577
578 pcmcia_release_configuration(link->handle);
579 pcmcia_release_io(link->handle, &link->io);
580 pcmcia_release_irq(link->handle, &link->irq);
581
582 link->state &= ~DEV_CONFIG;
583
584 scsi_host_put(shost);
585 } /* SYM53C500_release */
586
587 static const char*
588 SYM53C500_info(struct Scsi_Host *SChost)
589 {
590 static char info_msg[256];
591 struct sym53c500_data *data =
592 (struct sym53c500_data *)SChost->hostdata;
593
594 DEB(printk("SYM53C500_info called\n"));
595 (void)snprintf(info_msg, sizeof(info_msg),
596 "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.",
597 SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow");
598 return (info_msg);
599 }
600
601 static int
602 SYM53C500_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
603 {
604 int i;
605 int port_base = SCpnt->device->host->io_port;
606 struct sym53c500_data *data =
607 (struct sym53c500_data *)SCpnt->device->host->hostdata;
608
609 VDEB(printk("SYM53C500_queue called\n"));
610
611 DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n",
612 SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id,
613 SCpnt->device->lun, SCpnt->request_bufflen));
614
615 VDEB(for (i = 0; i < SCpnt->cmd_len; i++)
616 printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i]));
617 VDEB(printk("\n"));
618
619 data->current_SC = SCpnt;
620 data->current_SC->scsi_done = done;
621 data->current_SC->SCp.phase = command_ph;
622 data->current_SC->SCp.Status = 0;
623 data->current_SC->SCp.Message = 0;
624
625 /* We are locked here already by the mid layer */
626 REG0(port_base);
627 outb(SCpnt->device->id, port_base + DEST_ID); /* set destination */
628 outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */
629
630 for (i = 0; i < SCpnt->cmd_len; i++) {
631 outb(SCpnt->cmnd[i], port_base + SCSI_FIFO);
632 }
633 outb(SELECT_NO_ATN, port_base + CMD_REG);
634
635 return 0;
636 }
637
638 static int
639 SYM53C500_host_reset(struct scsi_cmnd *SCpnt)
640 {
641 int port_base = SCpnt->device->host->io_port;
642
643 DEB(printk("SYM53C500_host_reset called\n"));
644 SYM53C500_int_host_reset(port_base);
645
646 return SUCCESS;
647 }
648
649 static int
650 SYM53C500_biosparm(struct scsi_device *disk,
651 struct block_device *dev,
652 sector_t capacity, int *info_array)
653 {
654 int size;
655
656 DEB(printk("SYM53C500_biosparm called\n"));
657
658 size = capacity;
659 info_array[0] = 64; /* heads */
660 info_array[1] = 32; /* sectors */
661 info_array[2] = size >> 11; /* cylinders */
662 if (info_array[2] > 1024) { /* big disk */
663 info_array[0] = 255;
664 info_array[1] = 63;
665 info_array[2] = size / (255 * 63);
666 }
667 return 0;
668 }
669
670 static ssize_t
671 SYM53C500_show_pio(struct class_device *cdev, char *buf)
672 {
673 struct Scsi_Host *SHp = class_to_shost(cdev);
674 struct sym53c500_data *data =
675 (struct sym53c500_data *)SHp->hostdata;
676
677 return snprintf(buf, 4, "%d\n", data->fast_pio);
678 }
679
680 static ssize_t
681 SYM53C500_store_pio(struct class_device *cdev, const char *buf, size_t count)
682 {
683 int pio;
684 struct Scsi_Host *SHp = class_to_shost(cdev);
685 struct sym53c500_data *data =
686 (struct sym53c500_data *)SHp->hostdata;
687
688 pio = simple_strtoul(buf, NULL, 0);
689 if (pio == 0 || pio == 1) {
690 data->fast_pio = pio;
691 return count;
692 }
693 else
694 return -EINVAL;
695 }
696
697 /*
698 * SCSI HBA device attributes we want to
699 * make available via sysfs.
700 */
701 static struct class_device_attribute SYM53C500_pio_attr = {
702 .attr = {
703 .name = "fast_pio",
704 .mode = (S_IRUGO | S_IWUSR),
705 },
706 .show = SYM53C500_show_pio,
707 .store = SYM53C500_store_pio,
708 };
709
710 static struct class_device_attribute *SYM53C500_shost_attrs[] = {
711 &SYM53C500_pio_attr,
712 NULL,
713 };
714
715 /*
716 * scsi_host_template initializer
717 */
718 static struct scsi_host_template sym53c500_driver_template = {
719 .module = THIS_MODULE,
720 .name = "SYM53C500",
721 .info = SYM53C500_info,
722 .queuecommand = SYM53C500_queue,
723 .eh_host_reset_handler = SYM53C500_host_reset,
724 .bios_param = SYM53C500_biosparm,
725 .proc_name = "SYM53C500",
726 .can_queue = 1,
727 .this_id = 7,
728 .sg_tablesize = 32,
729 .cmd_per_lun = 1,
730 .use_clustering = ENABLE_CLUSTERING,
731 .shost_attrs = SYM53C500_shost_attrs
732 };
733
734 #define CS_CHECK(fn, ret) \
735 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
736
737 static void
738 SYM53C500_config(dev_link_t *link)
739 {
740 client_handle_t handle = link->handle;
741 struct scsi_info_t *info = link->priv;
742 tuple_t tuple;
743 cisparse_t parse;
744 int i, last_ret, last_fn;
745 int irq_level, port_base;
746 unsigned short tuple_data[32];
747 struct Scsi_Host *host;
748 struct scsi_host_template *tpnt = &sym53c500_driver_template;
749 struct sym53c500_data *data;
750
751 DEBUG(0, "SYM53C500_config(0x%p)\n", link);
752
753 tuple.TupleData = (cisdata_t *)tuple_data;
754 tuple.TupleDataMax = 64;
755 tuple.TupleOffset = 0;
756 tuple.DesiredTuple = CISTPL_CONFIG;
757 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
758 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
759 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
760 link->conf.ConfigBase = parse.config.base;
761
762 tuple.DesiredTuple = CISTPL_MANFID;
763 if ((pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) &&
764 (pcmcia_get_tuple_data(handle, &tuple) == CS_SUCCESS))
765 info->manf_id = le16_to_cpu(tuple.TupleData[0]);
766
767 /* Configure card */
768 link->state |= DEV_CONFIG;
769
770 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
771 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
772 while (1) {
773 if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
774 pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
775 goto next_entry;
776 link->conf.ConfigIndex = parse.cftable_entry.index;
777 link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
778 link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
779
780 if (link->io.BasePort1 != 0) {
781 i = pcmcia_request_io(handle, &link->io);
782 if (i == CS_SUCCESS)
783 break;
784 }
785 next_entry:
786 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
787 }
788
789 CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
790 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
791
792 /*
793 * That's the trouble with copying liberally from another driver.
794 * Some things probably aren't relevant, and I suspect this entire
795 * section dealing with manufacturer IDs can be scrapped. --rct
796 */
797 if ((info->manf_id == MANFID_MACNICA) ||
798 (info->manf_id == MANFID_PIONEER) ||
799 (info->manf_id == 0x0098)) {
800 /* set ATAcmd */
801 outb(0xb4, link->io.BasePort1 + 0xd);
802 outb(0x24, link->io.BasePort1 + 0x9);
803 outb(0x04, link->io.BasePort1 + 0xd);
804 }
805
806 /*
807 * irq_level == 0 implies tpnt->can_queue == 0, which
808 * is not supported in 2.6. Thus, only irq_level > 0
809 * will be allowed.
810 *
811 * Possible port_base values are as follows:
812 *
813 * 0x130, 0x230, 0x280, 0x290,
814 * 0x320, 0x330, 0x340, 0x350
815 */
816 port_base = link->io.BasePort1;
817 irq_level = link->irq.AssignedIRQ;
818
819 DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n",
820 port_base, irq_level, USE_FAST_PIO);)
821
822 chip_init(port_base);
823
824 host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data));
825 if (!host) {
826 printk("SYM53C500: Unable to register host, giving up.\n");
827 goto err_release;
828 }
829
830 data = (struct sym53c500_data *)host->hostdata;
831
832 if (irq_level > 0) {
833 if (request_irq(irq_level, SYM53C500_intr, 0, "SYM53C500", host)) {
834 printk("SYM53C500: unable to allocate IRQ %d\n", irq_level);
835 goto err_free_scsi;
836 }
837 DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level));
838 } else if (irq_level == 0) {
839 DEB(printk("SYM53C500: No interrupts detected\n"));
840 goto err_free_scsi;
841 } else {
842 DEB(printk("SYM53C500: Shouldn't get here!\n"));
843 goto err_free_scsi;
844 }
845
846 host->unique_id = port_base;
847 host->irq = irq_level;
848 host->io_port = port_base;
849 host->n_io_port = 0x10;
850 host->dma_channel = -1;
851
852 /*
853 * Note fast_pio is set to USE_FAST_PIO by
854 * default, but can be changed via "sysfs".
855 */
856 data->fast_pio = USE_FAST_PIO;
857
858 sprintf(info->node.dev_name, "scsi%d", host->host_no);
859 link->dev = &info->node;
860 info->host = host;
861
862 if (scsi_add_host(host, NULL))
863 goto err_free_irq;
864
865 scsi_scan_host(host);
866
867 goto out; /* SUCCESS */
868
869 err_free_irq:
870 free_irq(irq_level, host);
871 err_free_scsi:
872 scsi_host_put(host);
873 err_release:
874 release_region(port_base, 0x10);
875 printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n");
876
877 out:
878 link->state &= ~DEV_CONFIG_PENDING;
879 return;
880
881 cs_failed:
882 cs_error(link->handle, last_fn, last_ret);
883 SYM53C500_release(link);
884 return;
885 } /* SYM53C500_config */
886
887 static int
888 SYM53C500_event(event_t event, int priority, event_callback_args_t *args)
889 {
890 dev_link_t *link = args->client_data;
891 struct scsi_info_t *info = link->priv;
892
893 DEBUG(1, "SYM53C500_event(0x%06x)\n", event);
894
895 switch (event) {
896 case CS_EVENT_CARD_REMOVAL:
897 link->state &= ~DEV_PRESENT;
898 if (link->state & DEV_CONFIG)
899 SYM53C500_release(link);
900 break;
901 case CS_EVENT_CARD_INSERTION:
902 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
903 SYM53C500_config(link);
904 break;
905 case CS_EVENT_PM_SUSPEND:
906 link->state |= DEV_SUSPEND;
907 /* Fall through... */
908 case CS_EVENT_RESET_PHYSICAL:
909 if (link->state & DEV_CONFIG)
910 pcmcia_release_configuration(link->handle);
911 break;
912 case CS_EVENT_PM_RESUME:
913 link->state &= ~DEV_SUSPEND;
914 /* Fall through... */
915 case CS_EVENT_CARD_RESET:
916 if (link->state & DEV_CONFIG) {
917 pcmcia_request_configuration(link->handle, &link->conf);
918 /* See earlier comment about manufacturer IDs. */
919 if ((info->manf_id == MANFID_MACNICA) ||
920 (info->manf_id == MANFID_PIONEER) ||
921 (info->manf_id == 0x0098)) {
922 outb(0x80, link->io.BasePort1 + 0xd);
923 outb(0x24, link->io.BasePort1 + 0x9);
924 outb(0x04, link->io.BasePort1 + 0xd);
925 }
926 /*
927 * If things don't work after a "resume",
928 * this is a good place to start looking.
929 */
930 SYM53C500_int_host_reset(link->io.BasePort1);
931 }
932 break;
933 }
934 return 0;
935 } /* SYM53C500_event */
936
937 static void
938 SYM53C500_detach(dev_link_t *link)
939 {
940 dev_link_t **linkp;
941
942 DEBUG(0, "SYM53C500_detach(0x%p)\n", link);
943
944 /* Locate device structure */
945 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
946 if (*linkp == link)
947 break;
948 if (*linkp == NULL)
949 return;
950
951 if (link->state & DEV_CONFIG)
952 SYM53C500_release(link);
953
954 if (link->handle)
955 pcmcia_deregister_client(link->handle);
956
957 /* Unlink device structure, free bits. */
958 *linkp = link->next;
959 kfree(link->priv);
960 link->priv = NULL;
961 } /* SYM53C500_detach */
962
963 static dev_link_t *
964 SYM53C500_attach(void)
965 {
966 struct scsi_info_t *info;
967 client_reg_t client_reg;
968 dev_link_t *link;
969 int i, ret;
970
971 DEBUG(0, "SYM53C500_attach()\n");
972
973 /* Create new SCSI device */
974 info = kmalloc(sizeof(*info), GFP_KERNEL);
975 if (!info)
976 return NULL;
977 memset(info, 0, sizeof(*info));
978 link = &info->link;
979 link->priv = info;
980 link->io.NumPorts1 = 16;
981 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
982 link->io.IOAddrLines = 10;
983 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
984 link->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_LEVEL_ID;
985 if (irq_list[0] == -1)
986 link->irq.IRQInfo2 = irq_mask;
987 else
988 for (i = 0; i < 4; i++)
989 link->irq.IRQInfo2 |= 1 << irq_list[i];
990 link->conf.Attributes = CONF_ENABLE_IRQ;
991 link->conf.Vcc = 50;
992 link->conf.IntType = INT_MEMORY_AND_IO;
993 link->conf.Present = PRESENT_OPTION;
994
995 /* Register with Card Services */
996 link->next = dev_list;
997 dev_list = link;
998 client_reg.dev_info = &dev_info;
999 client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
1000 client_reg.event_handler = &SYM53C500_event;
1001 client_reg.EventMask = CS_EVENT_RESET_REQUEST | CS_EVENT_CARD_RESET |
1002 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
1003 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
1004 client_reg.Version = 0x0210;
1005 client_reg.event_callback_args.client_data = link;
1006 ret = pcmcia_register_client(&link->handle, &client_reg);
1007 if (ret != 0) {
1008 cs_error(link->handle, RegisterClient, ret);
1009 SYM53C500_detach(link);
1010 return NULL;
1011 }
1012
1013 return link;
1014 } /* SYM53C500_attach */
1015
1016 MODULE_AUTHOR("Bob Tracy <rct@frus.com>");
1017 MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver");
1018 MODULE_LICENSE("GPL");
1019
1020 static struct pcmcia_driver sym53c500_cs_driver = {
1021 .owner = THIS_MODULE,
1022 .drv = {
1023 .name = "sym53c500_cs",
1024 },
1025 .attach = SYM53C500_attach,
1026 .detach = SYM53C500_detach,
1027 };
1028
1029 static int __init
1030 init_sym53c500_cs(void)
1031 {
1032 return pcmcia_register_driver(&sym53c500_cs_driver);
1033 }
1034
1035 static void __exit
1036 exit_sym53c500_cs(void)
1037 {
1038 pcmcia_unregister_driver(&sym53c500_cs_driver);
1039 }
1040
1041 module_init(init_sym53c500_cs);
1042 module_exit(exit_sym53c500_cs);
MOXA 2.6.9 from sdlinux-moxaart.tgz