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[mirror_ubuntu-artful-kernel.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/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 dev_link_t link;
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 /*
232 * Global (within this module) variables other than
233 * sym53c500_driver_template (the scsi_host_template).
234 */
235 static dev_info_t dev_info = "sym53c500_cs";
236
237 /* ================================================================== */
238
239 static void
240 chip_init(int io_port)
241 {
242 REG1(io_port);
243 outb(0x01, io_port + PIO_STATUS);
244 outb(0x00, io_port + PIO_FLAG);
245
246 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
247 outb(C3_IMG, io_port + CONFIG3);
248 outb(C2_IMG, io_port + CONFIG2);
249 outb(C1_IMG, io_port + CONFIG1);
250
251 outb(0x05, io_port + CLKCONV); /* clock conversion factor */
252 outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */
253 outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */
254 outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */
255 }
256
257 static void
258 SYM53C500_int_host_reset(int io_port)
259 {
260 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
261 outb(CHIP_RESET, io_port + CMD_REG);
262 outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */
263 outb(SCSI_RESET, io_port + CMD_REG);
264 chip_init(io_port);
265 }
266
267 static __inline__ int
268 SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
269 {
270 int i;
271 int len; /* current scsi fifo size */
272
273 REG1(base);
274 while (reqlen) {
275 i = inb(base + PIO_STATUS);
276 /* VDEB(printk("pio_status=%x\n", i)); */
277 if (i & 0x80)
278 return 0;
279
280 switch (i & 0x1e) {
281 default:
282 case 0x10: /* fifo empty */
283 len = 0;
284 break;
285 case 0x0:
286 len = 1;
287 break;
288 case 0x8: /* fifo 1/3 full */
289 len = 42;
290 break;
291 case 0xc: /* fifo 2/3 full */
292 len = 84;
293 break;
294 case 0xe: /* fifo full */
295 len = 128;
296 break;
297 }
298
299 if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */
300 return 0;
301 }
302
303 if (len) {
304 if (len > reqlen)
305 len = reqlen;
306
307 if (fast_pio && len > 3) {
308 insl(base + PIO_FIFO, request, len >> 2);
309 request += len & 0xfc;
310 reqlen -= len & 0xfc;
311 } else {
312 while (len--) {
313 *request++ = inb(base + PIO_FIFO);
314 reqlen--;
315 }
316 }
317 }
318 }
319 return 0;
320 }
321
322 static __inline__ int
323 SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
324 {
325 int i = 0;
326 int len; /* current scsi fifo size */
327
328 REG1(base);
329 while (reqlen && !(i & 0x40)) {
330 i = inb(base + PIO_STATUS);
331 /* VDEB(printk("pio_status=%x\n", i)); */
332 if (i & 0x80) /* error */
333 return 0;
334
335 switch (i & 0x1e) {
336 case 0x10:
337 len = 128;
338 break;
339 case 0x0:
340 len = 84;
341 break;
342 case 0x8:
343 len = 42;
344 break;
345 case 0xc:
346 len = 1;
347 break;
348 default:
349 case 0xe:
350 len = 0;
351 break;
352 }
353
354 if (len) {
355 if (len > reqlen)
356 len = reqlen;
357
358 if (fast_pio && len > 3) {
359 outsl(base + PIO_FIFO, request, len >> 2);
360 request += len & 0xfc;
361 reqlen -= len & 0xfc;
362 } else {
363 while (len--) {
364 outb(*request++, base + PIO_FIFO);
365 reqlen--;
366 }
367 }
368 }
369 }
370 return 0;
371 }
372
373 static irqreturn_t
374 SYM53C500_intr(int irq, void *dev_id, struct pt_regs *regs)
375 {
376 unsigned long flags;
377 struct Scsi_Host *dev = dev_id;
378 DEB(unsigned char fifo_size;)
379 DEB(unsigned char seq_reg;)
380 unsigned char status, int_reg;
381 unsigned char pio_status;
382 struct scatterlist *sglist;
383 unsigned int sgcount;
384 int port_base = dev->io_port;
385 struct sym53c500_data *data =
386 (struct sym53c500_data *)dev->hostdata;
387 struct scsi_cmnd *curSC = data->current_SC;
388 int fast_pio = data->fast_pio;
389
390 spin_lock_irqsave(dev->host_lock, flags);
391
392 VDEB(printk("SYM53C500_intr called\n"));
393
394 REG1(port_base);
395 pio_status = inb(port_base + PIO_STATUS);
396 REG0(port_base);
397 status = inb(port_base + STAT_REG);
398 DEB(seq_reg = inb(port_base + SEQ_REG));
399 int_reg = inb(port_base + INT_REG);
400 DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f);
401
402 #if SYM53C500_DEBUG
403 printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x",
404 status, seq_reg, int_reg, fifo_size);
405 printk(", pio=%02x\n", pio_status);
406 #endif /* SYM53C500_DEBUG */
407
408 if (int_reg & 0x80) { /* SCSI reset intr */
409 DEB(printk("SYM53C500: reset intr received\n"));
410 curSC->result = DID_RESET << 16;
411 goto idle_out;
412 }
413
414 if (pio_status & 0x80) {
415 printk("SYM53C500: Warning: PIO error!\n");
416 curSC->result = DID_ERROR << 16;
417 goto idle_out;
418 }
419
420 if (status & 0x20) { /* Parity error */
421 printk("SYM53C500: Warning: parity error!\n");
422 curSC->result = DID_PARITY << 16;
423 goto idle_out;
424 }
425
426 if (status & 0x40) { /* Gross error */
427 printk("SYM53C500: Warning: gross error!\n");
428 curSC->result = DID_ERROR << 16;
429 goto idle_out;
430 }
431
432 if (int_reg & 0x20) { /* Disconnect */
433 DEB(printk("SYM53C500: disconnect intr received\n"));
434 if (curSC->SCp.phase != message_in) { /* Unexpected disconnect */
435 curSC->result = DID_NO_CONNECT << 16;
436 } else { /* Command complete, return status and message */
437 curSC->result = (curSC->SCp.Status & 0xff)
438 | ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16);
439 }
440 goto idle_out;
441 }
442
443 switch (status & 0x07) { /* scsi phase */
444 case 0x00: /* DATA-OUT */
445 if (int_reg & 0x10) { /* Target requesting info transfer */
446 curSC->SCp.phase = data_out;
447 VDEB(printk("SYM53C500: Data-Out phase\n"));
448 outb(FLUSH_FIFO, port_base + CMD_REG);
449 LOAD_DMA_COUNT(port_base, curSC->request_bufflen); /* Max transfer size */
450 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
451 if (!curSC->use_sg) /* Don't use scatter-gather */
452 SYM53C500_pio_write(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen);
453 else { /* use scatter-gather */
454 sgcount = curSC->use_sg;
455 sglist = curSC->request_buffer;
456 while (sgcount--) {
457 SYM53C500_pio_write(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length);
458 sglist++;
459 }
460 }
461 REG0(port_base);
462 }
463 break;
464
465 case 0x01: /* DATA-IN */
466 if (int_reg & 0x10) { /* Target requesting info transfer */
467 curSC->SCp.phase = data_in;
468 VDEB(printk("SYM53C500: Data-In phase\n"));
469 outb(FLUSH_FIFO, port_base + CMD_REG);
470 LOAD_DMA_COUNT(port_base, curSC->request_bufflen); /* Max transfer size */
471 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
472 if (!curSC->use_sg) /* Don't use scatter-gather */
473 SYM53C500_pio_read(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen);
474 else { /* Use scatter-gather */
475 sgcount = curSC->use_sg;
476 sglist = curSC->request_buffer;
477 while (sgcount--) {
478 SYM53C500_pio_read(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length);
479 sglist++;
480 }
481 }
482 REG0(port_base);
483 }
484 break;
485
486 case 0x02: /* COMMAND */
487 curSC->SCp.phase = command_ph;
488 printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n");
489 break;
490
491 case 0x03: /* STATUS */
492 curSC->SCp.phase = status_ph;
493 VDEB(printk("SYM53C500: Status phase\n"));
494 outb(FLUSH_FIFO, port_base + CMD_REG);
495 outb(INIT_CMD_COMPLETE, port_base + CMD_REG);
496 break;
497
498 case 0x04: /* Reserved */
499 case 0x05: /* Reserved */
500 printk("SYM53C500: WARNING: Reserved phase!!!\n");
501 break;
502
503 case 0x06: /* MESSAGE-OUT */
504 DEB(printk("SYM53C500: Message-Out phase\n"));
505 curSC->SCp.phase = message_out;
506 outb(SET_ATN, port_base + CMD_REG); /* Reject the message */
507 outb(MSG_ACCEPT, port_base + CMD_REG);
508 break;
509
510 case 0x07: /* MESSAGE-IN */
511 VDEB(printk("SYM53C500: Message-In phase\n"));
512 curSC->SCp.phase = message_in;
513
514 curSC->SCp.Status = inb(port_base + SCSI_FIFO);
515 curSC->SCp.Message = inb(port_base + SCSI_FIFO);
516
517 VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f));
518 DEB(printk("Status = %02x Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message));
519
520 if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) {
521 outb(SET_ATN, port_base + CMD_REG); /* Reject message */
522 DEB(printk("Discarding SAVE_POINTERS message\n"));
523 }
524 outb(MSG_ACCEPT, port_base + CMD_REG);
525 break;
526 }
527 out:
528 spin_unlock_irqrestore(dev->host_lock, flags);
529 return IRQ_HANDLED;
530
531 idle_out:
532 curSC->SCp.phase = idle;
533 curSC->scsi_done(curSC);
534 goto out;
535 }
536
537 static void
538 SYM53C500_release(dev_link_t *link)
539 {
540 struct scsi_info_t *info = link->priv;
541 struct Scsi_Host *shost = info->host;
542
543 DEBUG(0, "SYM53C500_release(0x%p)\n", link);
544
545 /*
546 * Do this before releasing/freeing resources.
547 */
548 scsi_remove_host(shost);
549
550 /*
551 * Interrupts getting hosed on card removal. Try
552 * the following code, mostly from qlogicfas.c.
553 */
554 if (shost->irq)
555 free_irq(shost->irq, shost);
556 if (shost->dma_channel != 0xff)
557 free_dma(shost->dma_channel);
558 if (shost->io_port && shost->n_io_port)
559 release_region(shost->io_port, shost->n_io_port);
560
561 link->dev = NULL;
562
563 pcmcia_release_configuration(link->handle);
564 pcmcia_release_io(link->handle, &link->io);
565 pcmcia_release_irq(link->handle, &link->irq);
566
567 link->state &= ~DEV_CONFIG;
568
569 scsi_host_put(shost);
570 } /* SYM53C500_release */
571
572 static const char*
573 SYM53C500_info(struct Scsi_Host *SChost)
574 {
575 static char info_msg[256];
576 struct sym53c500_data *data =
577 (struct sym53c500_data *)SChost->hostdata;
578
579 DEB(printk("SYM53C500_info called\n"));
580 (void)snprintf(info_msg, sizeof(info_msg),
581 "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.",
582 SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow");
583 return (info_msg);
584 }
585
586 static int
587 SYM53C500_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
588 {
589 int i;
590 int port_base = SCpnt->device->host->io_port;
591 struct sym53c500_data *data =
592 (struct sym53c500_data *)SCpnt->device->host->hostdata;
593
594 VDEB(printk("SYM53C500_queue called\n"));
595
596 DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n",
597 SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id,
598 SCpnt->device->lun, SCpnt->request_bufflen));
599
600 VDEB(for (i = 0; i < SCpnt->cmd_len; i++)
601 printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i]));
602 VDEB(printk("\n"));
603
604 data->current_SC = SCpnt;
605 data->current_SC->scsi_done = done;
606 data->current_SC->SCp.phase = command_ph;
607 data->current_SC->SCp.Status = 0;
608 data->current_SC->SCp.Message = 0;
609
610 /* We are locked here already by the mid layer */
611 REG0(port_base);
612 outb(scmd_id(SCpnt), port_base + DEST_ID); /* set destination */
613 outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */
614
615 for (i = 0; i < SCpnt->cmd_len; i++) {
616 outb(SCpnt->cmnd[i], port_base + SCSI_FIFO);
617 }
618 outb(SELECT_NO_ATN, port_base + CMD_REG);
619
620 return 0;
621 }
622
623 static int
624 SYM53C500_host_reset(struct scsi_cmnd *SCpnt)
625 {
626 int port_base = SCpnt->device->host->io_port;
627
628 DEB(printk("SYM53C500_host_reset called\n"));
629 spin_lock_irq(SCpnt->device->host->host_lock);
630 SYM53C500_int_host_reset(port_base);
631 spin_unlock_irq(SCpnt->device->host->host_lock);
632
633 return SUCCESS;
634 }
635
636 static int
637 SYM53C500_biosparm(struct scsi_device *disk,
638 struct block_device *dev,
639 sector_t capacity, int *info_array)
640 {
641 int size;
642
643 DEB(printk("SYM53C500_biosparm called\n"));
644
645 size = capacity;
646 info_array[0] = 64; /* heads */
647 info_array[1] = 32; /* sectors */
648 info_array[2] = size >> 11; /* cylinders */
649 if (info_array[2] > 1024) { /* big disk */
650 info_array[0] = 255;
651 info_array[1] = 63;
652 info_array[2] = size / (255 * 63);
653 }
654 return 0;
655 }
656
657 static ssize_t
658 SYM53C500_show_pio(struct class_device *cdev, char *buf)
659 {
660 struct Scsi_Host *SHp = class_to_shost(cdev);
661 struct sym53c500_data *data =
662 (struct sym53c500_data *)SHp->hostdata;
663
664 return snprintf(buf, 4, "%d\n", data->fast_pio);
665 }
666
667 static ssize_t
668 SYM53C500_store_pio(struct class_device *cdev, const char *buf, size_t count)
669 {
670 int pio;
671 struct Scsi_Host *SHp = class_to_shost(cdev);
672 struct sym53c500_data *data =
673 (struct sym53c500_data *)SHp->hostdata;
674
675 pio = simple_strtoul(buf, NULL, 0);
676 if (pio == 0 || pio == 1) {
677 data->fast_pio = pio;
678 return count;
679 }
680 else
681 return -EINVAL;
682 }
683
684 /*
685 * SCSI HBA device attributes we want to
686 * make available via sysfs.
687 */
688 static struct class_device_attribute SYM53C500_pio_attr = {
689 .attr = {
690 .name = "fast_pio",
691 .mode = (S_IRUGO | S_IWUSR),
692 },
693 .show = SYM53C500_show_pio,
694 .store = SYM53C500_store_pio,
695 };
696
697 static struct class_device_attribute *SYM53C500_shost_attrs[] = {
698 &SYM53C500_pio_attr,
699 NULL,
700 };
701
702 /*
703 * scsi_host_template initializer
704 */
705 static struct scsi_host_template sym53c500_driver_template = {
706 .module = THIS_MODULE,
707 .name = "SYM53C500",
708 .info = SYM53C500_info,
709 .queuecommand = SYM53C500_queue,
710 .eh_host_reset_handler = SYM53C500_host_reset,
711 .bios_param = SYM53C500_biosparm,
712 .proc_name = "SYM53C500",
713 .can_queue = 1,
714 .this_id = 7,
715 .sg_tablesize = 32,
716 .cmd_per_lun = 1,
717 .use_clustering = ENABLE_CLUSTERING,
718 .shost_attrs = SYM53C500_shost_attrs
719 };
720
721 #define CS_CHECK(fn, ret) \
722 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
723
724 static void
725 SYM53C500_config(dev_link_t *link)
726 {
727 client_handle_t handle = link->handle;
728 struct scsi_info_t *info = link->priv;
729 tuple_t tuple;
730 cisparse_t parse;
731 int i, last_ret, last_fn;
732 int irq_level, port_base;
733 unsigned short tuple_data[32];
734 struct Scsi_Host *host;
735 struct scsi_host_template *tpnt = &sym53c500_driver_template;
736 struct sym53c500_data *data;
737
738 DEBUG(0, "SYM53C500_config(0x%p)\n", link);
739
740 tuple.TupleData = (cisdata_t *)tuple_data;
741 tuple.TupleDataMax = 64;
742 tuple.TupleOffset = 0;
743 tuple.DesiredTuple = CISTPL_CONFIG;
744 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
745 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
746 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
747 link->conf.ConfigBase = parse.config.base;
748
749 tuple.DesiredTuple = CISTPL_MANFID;
750 if ((pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) &&
751 (pcmcia_get_tuple_data(handle, &tuple) == CS_SUCCESS))
752 info->manf_id = le16_to_cpu(tuple.TupleData[0]);
753
754 /* Configure card */
755 link->state |= DEV_CONFIG;
756
757 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
758 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
759 while (1) {
760 if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
761 pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
762 goto next_entry;
763 link->conf.ConfigIndex = parse.cftable_entry.index;
764 link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
765 link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
766
767 if (link->io.BasePort1 != 0) {
768 i = pcmcia_request_io(handle, &link->io);
769 if (i == CS_SUCCESS)
770 break;
771 }
772 next_entry:
773 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
774 }
775
776 CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
777 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
778
779 /*
780 * That's the trouble with copying liberally from another driver.
781 * Some things probably aren't relevant, and I suspect this entire
782 * section dealing with manufacturer IDs can be scrapped. --rct
783 */
784 if ((info->manf_id == MANFID_MACNICA) ||
785 (info->manf_id == MANFID_PIONEER) ||
786 (info->manf_id == 0x0098)) {
787 /* set ATAcmd */
788 outb(0xb4, link->io.BasePort1 + 0xd);
789 outb(0x24, link->io.BasePort1 + 0x9);
790 outb(0x04, link->io.BasePort1 + 0xd);
791 }
792
793 /*
794 * irq_level == 0 implies tpnt->can_queue == 0, which
795 * is not supported in 2.6. Thus, only irq_level > 0
796 * will be allowed.
797 *
798 * Possible port_base values are as follows:
799 *
800 * 0x130, 0x230, 0x280, 0x290,
801 * 0x320, 0x330, 0x340, 0x350
802 */
803 port_base = link->io.BasePort1;
804 irq_level = link->irq.AssignedIRQ;
805
806 DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n",
807 port_base, irq_level, USE_FAST_PIO);)
808
809 chip_init(port_base);
810
811 host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data));
812 if (!host) {
813 printk("SYM53C500: Unable to register host, giving up.\n");
814 goto err_release;
815 }
816
817 data = (struct sym53c500_data *)host->hostdata;
818
819 if (irq_level > 0) {
820 if (request_irq(irq_level, SYM53C500_intr, SA_SHIRQ, "SYM53C500", host)) {
821 printk("SYM53C500: unable to allocate IRQ %d\n", irq_level);
822 goto err_free_scsi;
823 }
824 DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level));
825 } else if (irq_level == 0) {
826 DEB(printk("SYM53C500: No interrupts detected\n"));
827 goto err_free_scsi;
828 } else {
829 DEB(printk("SYM53C500: Shouldn't get here!\n"));
830 goto err_free_scsi;
831 }
832
833 host->unique_id = port_base;
834 host->irq = irq_level;
835 host->io_port = port_base;
836 host->n_io_port = 0x10;
837 host->dma_channel = -1;
838
839 /*
840 * Note fast_pio is set to USE_FAST_PIO by
841 * default, but can be changed via "sysfs".
842 */
843 data->fast_pio = USE_FAST_PIO;
844
845 sprintf(info->node.dev_name, "scsi%d", host->host_no);
846 link->dev = &info->node;
847 info->host = host;
848
849 if (scsi_add_host(host, NULL))
850 goto err_free_irq;
851
852 scsi_scan_host(host);
853
854 goto out; /* SUCCESS */
855
856 err_free_irq:
857 free_irq(irq_level, host);
858 err_free_scsi:
859 scsi_host_put(host);
860 err_release:
861 release_region(port_base, 0x10);
862 printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n");
863
864 out:
865 link->state &= ~DEV_CONFIG_PENDING;
866 return;
867
868 cs_failed:
869 cs_error(link->handle, last_fn, last_ret);
870 SYM53C500_release(link);
871 return;
872 } /* SYM53C500_config */
873
874 static int sym53c500_suspend(struct pcmcia_device *dev)
875 {
876 dev_link_t *link = dev_to_instance(dev);
877
878 link->state |= DEV_SUSPEND;
879 if (link->state & DEV_CONFIG)
880 pcmcia_release_configuration(link->handle);
881
882 return 0;
883 }
884
885 static int sym53c500_resume(struct pcmcia_device *dev)
886 {
887 dev_link_t *link = dev_to_instance(dev);
888 struct scsi_info_t *info = link->priv;
889
890 link->state &= ~DEV_SUSPEND;
891 if (link->state & DEV_CONFIG) {
892 pcmcia_request_configuration(link->handle, &link->conf);
893
894 /* See earlier comment about manufacturer IDs. */
895 if ((info->manf_id == MANFID_MACNICA) ||
896 (info->manf_id == MANFID_PIONEER) ||
897 (info->manf_id == 0x0098)) {
898 outb(0x80, link->io.BasePort1 + 0xd);
899 outb(0x24, link->io.BasePort1 + 0x9);
900 outb(0x04, link->io.BasePort1 + 0xd);
901 }
902 /*
903 * If things don't work after a "resume",
904 * this is a good place to start looking.
905 */
906 SYM53C500_int_host_reset(link->io.BasePort1);
907 }
908
909 return 0;
910 }
911
912 static int
913 SYM53C500_event(event_t event, int priority, event_callback_args_t *args)
914 {
915 dev_link_t *link = args->client_data;
916
917 DEBUG(1, "SYM53C500_event(0x%06x)\n", event);
918
919 switch (event) {
920 case CS_EVENT_CARD_INSERTION:
921 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
922 SYM53C500_config(link);
923 break;
924 }
925 return 0;
926 } /* SYM53C500_event */
927
928 static void
929 SYM53C500_detach(struct pcmcia_device *p_dev)
930 {
931 dev_link_t *link = dev_to_instance(p_dev);
932
933 DEBUG(0, "SYM53C500_detach(0x%p)\n", link);
934
935 if (link->state & DEV_CONFIG)
936 SYM53C500_release(link);
937
938 kfree(link->priv);
939 link->priv = NULL;
940 } /* SYM53C500_detach */
941
942 static dev_link_t *
943 SYM53C500_attach(void)
944 {
945 struct scsi_info_t *info;
946 client_reg_t client_reg;
947 dev_link_t *link;
948 int ret;
949
950 DEBUG(0, "SYM53C500_attach()\n");
951
952 /* Create new SCSI device */
953 info = kmalloc(sizeof(*info), GFP_KERNEL);
954 if (!info)
955 return NULL;
956 memset(info, 0, sizeof(*info));
957 link = &info->link;
958 link->priv = info;
959 link->io.NumPorts1 = 16;
960 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
961 link->io.IOAddrLines = 10;
962 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
963 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
964 link->conf.Attributes = CONF_ENABLE_IRQ;
965 link->conf.Vcc = 50;
966 link->conf.IntType = INT_MEMORY_AND_IO;
967 link->conf.Present = PRESENT_OPTION;
968
969 /* Register with Card Services */
970 link->next = NULL;
971 client_reg.dev_info = &dev_info;
972 client_reg.Version = 0x0210;
973 client_reg.event_callback_args.client_data = link;
974 ret = pcmcia_register_client(&link->handle, &client_reg);
975 if (ret != 0) {
976 cs_error(link->handle, RegisterClient, ret);
977 SYM53C500_detach(link->handle);
978 return NULL;
979 }
980
981 return link;
982 } /* SYM53C500_attach */
983
984 MODULE_AUTHOR("Bob Tracy <rct@frus.com>");
985 MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver");
986 MODULE_LICENSE("GPL");
987
988 static struct pcmcia_device_id sym53c500_ids[] = {
989 PCMCIA_DEVICE_PROD_ID12("BASICS by New Media Corporation", "SCSI Sym53C500", 0x23c78a9d, 0x0099e7f7),
990 PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "SCSI Bus Toaster Sym53C500", 0x085a850b, 0x45432eb8),
991 PCMCIA_DEVICE_PROD_ID2("SCSI9000", 0x21648f44),
992 PCMCIA_DEVICE_NULL,
993 };
994 MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids);
995
996 static struct pcmcia_driver sym53c500_cs_driver = {
997 .owner = THIS_MODULE,
998 .drv = {
999 .name = "sym53c500_cs",
1000 },
1001 .attach = SYM53C500_attach,
1002 .event = SYM53C500_event,
1003 .remove = SYM53C500_detach,
1004 .id_table = sym53c500_ids,
1005 .suspend = sym53c500_suspend,
1006 .resume = sym53c500_resume,
1007 };
1008
1009 static int __init
1010 init_sym53c500_cs(void)
1011 {
1012 return pcmcia_register_driver(&sym53c500_cs_driver);
1013 }
1014
1015 static void __exit
1016 exit_sym53c500_cs(void)
1017 {
1018 pcmcia_unregister_driver(&sym53c500_cs_driver);
1019 }
1020
1021 module_init(init_sym53c500_cs);
1022 module_exit(exit_sym53c500_cs);
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