?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
[XFRM]: skb_cow_data() does not set proper owner for new skbs.
[linux-2.6/verdex.git] / drivers / scsi / pcmcia / sym53c500_cs.c
blob8457d0d7748a9bb15c1879cbba6d20dcd01ed7f7
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_link_t *dev_list;
236 static dev_info_t dev_info = "sym53c500_cs";
237
238 /* ================================================================== */
239
240 static void
241 chip_init(int io_port)
242 {
243 REG1(io_port);
244 outb(0x01, io_port + PIO_STATUS);
245 outb(0x00, io_port + PIO_FLAG);
246
247 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
248 outb(C3_IMG, io_port + CONFIG3);
249 outb(C2_IMG, io_port + CONFIG2);
250 outb(C1_IMG, io_port + CONFIG1);
251
252 outb(0x05, io_port + CLKCONV); /* clock conversion factor */
253 outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */
254 outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */
255 outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */
256 }
257
258 static void
259 SYM53C500_int_host_reset(int io_port)
260 {
261 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
262 outb(CHIP_RESET, io_port + CMD_REG);
263 outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */
264 outb(SCSI_RESET, io_port + CMD_REG);
265 chip_init(io_port);
266 }
267
268 static __inline__ int
269 SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
270 {
271 int i;
272 int len; /* current scsi fifo size */
273
274 REG1(base);
275 while (reqlen) {
276 i = inb(base + PIO_STATUS);
277 /* VDEB(printk("pio_status=%x\n", i)); */
278 if (i & 0x80)
279 return 0;
280
281 switch (i & 0x1e) {
282 default:
283 case 0x10: /* fifo empty */
284 len = 0;
285 break;
286 case 0x0:
287 len = 1;
288 break;
289 case 0x8: /* fifo 1/3 full */
290 len = 42;
291 break;
292 case 0xc: /* fifo 2/3 full */
293 len = 84;
294 break;
295 case 0xe: /* fifo full */
296 len = 128;
297 break;
298 }
299
300 if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */
301 return 0;
302 }
303
304 if (len) {
305 if (len > reqlen)
306 len = reqlen;
307
308 if (fast_pio && len > 3) {
309 insl(base + PIO_FIFO, request, len >> 2);
310 request += len & 0xfc;
311 reqlen -= len & 0xfc;
312 } else {
313 while (len--) {
314 *request++ = inb(base + PIO_FIFO);
315 reqlen--;
316 }
317 }
318 }
319 }
320 return 0;
321 }
322
323 static __inline__ int
324 SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
325 {
326 int i = 0;
327 int len; /* current scsi fifo size */
328
329 REG1(base);
330 while (reqlen && !(i & 0x40)) {
331 i = inb(base + PIO_STATUS);
332 /* VDEB(printk("pio_status=%x\n", i)); */
333 if (i & 0x80) /* error */
334 return 0;
335
336 switch (i & 0x1e) {
337 case 0x10:
338 len = 128;
339 break;
340 case 0x0:
341 len = 84;
342 break;
343 case 0x8:
344 len = 42;
345 break;
346 case 0xc:
347 len = 1;
348 break;
349 default:
350 case 0xe:
351 len = 0;
352 break;
353 }
354
355 if (len) {
356 if (len > reqlen)
357 len = reqlen;
358
359 if (fast_pio && len > 3) {
360 outsl(base + PIO_FIFO, request, len >> 2);
361 request += len & 0xfc;
362 reqlen -= len & 0xfc;
363 } else {
364 while (len--) {
365 outb(*request++, base + PIO_FIFO);
366 reqlen--;
367 }
368 }
369 }
370 }
371 return 0;
372 }
373
374 static irqreturn_t
375 SYM53C500_intr(int irq, void *dev_id, struct pt_regs *regs)
376 {
377 unsigned long flags;
378 struct Scsi_Host *dev = dev_id;
379 DEB(unsigned char fifo_size;)
380 DEB(unsigned char seq_reg;)
381 unsigned char status, int_reg;
382 unsigned char pio_status;
383 struct scatterlist *sglist;
384 unsigned int sgcount;
385 int port_base = dev->io_port;
386 struct sym53c500_data *data =
387 (struct sym53c500_data *)dev->hostdata;
388 struct scsi_cmnd *curSC = data->current_SC;
389 int fast_pio = data->fast_pio;
390
391 spin_lock_irqsave(dev->host_lock, flags);
392
393 VDEB(printk("SYM53C500_intr called\n"));
394
395 REG1(port_base);
396 pio_status = inb(port_base + PIO_STATUS);
397 REG0(port_base);
398 status = inb(port_base + STAT_REG);
399 DEB(seq_reg = inb(port_base + SEQ_REG));
400 int_reg = inb(port_base + INT_REG);
401 DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f);
402
403 #if SYM53C500_DEBUG
404 printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x",
405 status, seq_reg, int_reg, fifo_size);
406 printk(", pio=%02x\n", pio_status);
407 #endif /* SYM53C500_DEBUG */
408
409 if (int_reg & 0x80) { /* SCSI reset intr */
410 DEB(printk("SYM53C500: reset intr received\n"));
411 curSC->result = DID_RESET << 16;
412 goto idle_out;
413 }
414
415 if (pio_status & 0x80) {
416 printk("SYM53C500: Warning: PIO error!\n");
417 curSC->result = DID_ERROR << 16;
418 goto idle_out;
419 }
420
421 if (status & 0x20) { /* Parity error */
422 printk("SYM53C500: Warning: parity error!\n");
423 curSC->result = DID_PARITY << 16;
424 goto idle_out;
425 }
426
427 if (status & 0x40) { /* Gross error */
428 printk("SYM53C500: Warning: gross error!\n");
429 curSC->result = DID_ERROR << 16;
430 goto idle_out;
431 }
432
433 if (int_reg & 0x20) { /* Disconnect */
434 DEB(printk("SYM53C500: disconnect intr received\n"));
435 if (curSC->SCp.phase != message_in) { /* Unexpected disconnect */
436 curSC->result = DID_NO_CONNECT << 16;
437 } else { /* Command complete, return status and message */
438 curSC->result = (curSC->SCp.Status & 0xff)
439 | ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16);
440 }
441 goto idle_out;
442 }
443
444 switch (status & 0x07) { /* scsi phase */
445 case 0x00: /* DATA-OUT */
446 if (int_reg & 0x10) { /* Target requesting info transfer */
447 curSC->SCp.phase = data_out;
448 VDEB(printk("SYM53C500: Data-Out phase\n"));
449 outb(FLUSH_FIFO, port_base + CMD_REG);
450 LOAD_DMA_COUNT(port_base, curSC->request_bufflen); /* Max transfer size */
451 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
452 if (!curSC->use_sg) /* Don't use scatter-gather */
453 SYM53C500_pio_write(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen);
454 else { /* use scatter-gather */
455 sgcount = curSC->use_sg;
456 sglist = curSC->request_buffer;
457 while (sgcount--) {
458 SYM53C500_pio_write(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length);
459 sglist++;
460 }
461 }
462 REG0(port_base);
463 }
464 break;
465
466 case 0x01: /* DATA-IN */
467 if (int_reg & 0x10) { /* Target requesting info transfer */
468 curSC->SCp.phase = data_in;
469 VDEB(printk("SYM53C500: Data-In phase\n"));
470 outb(FLUSH_FIFO, port_base + CMD_REG);
471 LOAD_DMA_COUNT(port_base, curSC->request_bufflen); /* Max transfer size */
472 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
473 if (!curSC->use_sg) /* Don't use scatter-gather */
474 SYM53C500_pio_read(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen);
475 else { /* Use scatter-gather */
476 sgcount = curSC->use_sg;
477 sglist = curSC->request_buffer;
478 while (sgcount--) {
479 SYM53C500_pio_read(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length);
480 sglist++;
481 }
482 }
483 REG0(port_base);
484 }
485 break;
486
487 case 0x02: /* COMMAND */
488 curSC->SCp.phase = command_ph;
489 printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n");
490 break;
491
492 case 0x03: /* STATUS */
493 curSC->SCp.phase = status_ph;
494 VDEB(printk("SYM53C500: Status phase\n"));
495 outb(FLUSH_FIFO, port_base + CMD_REG);
496 outb(INIT_CMD_COMPLETE, port_base + CMD_REG);
497 break;
498
499 case 0x04: /* Reserved */
500 case 0x05: /* Reserved */
501 printk("SYM53C500: WARNING: Reserved phase!!!\n");
502 break;
503
504 case 0x06: /* MESSAGE-OUT */
505 DEB(printk("SYM53C500: Message-Out phase\n"));
506 curSC->SCp.phase = message_out;
507 outb(SET_ATN, port_base + CMD_REG); /* Reject the message */
508 outb(MSG_ACCEPT, port_base + CMD_REG);
509 break;
510
511 case 0x07: /* MESSAGE-IN */
512 VDEB(printk("SYM53C500: Message-In phase\n"));
513 curSC->SCp.phase = message_in;
514
515 curSC->SCp.Status = inb(port_base + SCSI_FIFO);
516 curSC->SCp.Message = inb(port_base + SCSI_FIFO);
517
518 VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f));
519 DEB(printk("Status = %02x Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message));
520
521 if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) {
522 outb(SET_ATN, port_base + CMD_REG); /* Reject message */
523 DEB(printk("Discarding SAVE_POINTERS message\n"));
524 }
525 outb(MSG_ACCEPT, port_base + CMD_REG);
526 break;
527 }
528 out:
529 spin_unlock_irqrestore(dev->host_lock, flags);
530 return IRQ_HANDLED;
531
532 idle_out:
533 curSC->SCp.phase = idle;
534 curSC->scsi_done(curSC);
535 goto out;
536 }
537
538 static void
539 SYM53C500_release(dev_link_t *link)
540 {
541 struct scsi_info_t *info = link->priv;
542 struct Scsi_Host *shost = info->host;
543
544 DEBUG(0, "SYM53C500_release(0x%p)\n", link);
545
546 /*
547 * Do this before releasing/freeing resources.
548 */
549 scsi_remove_host(shost);
550
551 /*
552 * Interrupts getting hosed on card removal. Try
553 * the following code, mostly from qlogicfas.c.
554 */
555 if (shost->irq)
556 free_irq(shost->irq, shost);
557 if (shost->dma_channel != 0xff)
558 free_dma(shost->dma_channel);
559 if (shost->io_port && shost->n_io_port)
560 release_region(shost->io_port, shost->n_io_port);
561
562 link->dev = NULL;
563
564 pcmcia_release_configuration(link->handle);
565 pcmcia_release_io(link->handle, &link->io);
566 pcmcia_release_irq(link->handle, &link->irq);
567
568 link->state &= ~DEV_CONFIG;
569
570 scsi_host_put(shost);
571 } /* SYM53C500_release */
572
573 static const char*
574 SYM53C500_info(struct Scsi_Host *SChost)
575 {
576 static char info_msg[256];
577 struct sym53c500_data *data =
578 (struct sym53c500_data *)SChost->hostdata;
579
580 DEB(printk("SYM53C500_info called\n"));
581 (void)snprintf(info_msg, sizeof(info_msg),
582 "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.",
583 SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow");
584 return (info_msg);
585 }
586
587 static int
588 SYM53C500_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
589 {
590 int i;
591 int port_base = SCpnt->device->host->io_port;
592 struct sym53c500_data *data =
593 (struct sym53c500_data *)SCpnt->device->host->hostdata;
594
595 VDEB(printk("SYM53C500_queue called\n"));
596
597 DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n",
598 SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id,
599 SCpnt->device->lun, SCpnt->request_bufflen));
600
601 VDEB(for (i = 0; i < SCpnt->cmd_len; i++)
602 printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i]));
603 VDEB(printk("\n"));
604
605 data->current_SC = SCpnt;
606 data->current_SC->scsi_done = done;
607 data->current_SC->SCp.phase = command_ph;
608 data->current_SC->SCp.Status = 0;
609 data->current_SC->SCp.Message = 0;
610
611 /* We are locked here already by the mid layer */
612 REG0(port_base);
613 outb(SCpnt->device->id, port_base + DEST_ID); /* set destination */
614 outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */
615
616 for (i = 0; i < SCpnt->cmd_len; i++) {
617 outb(SCpnt->cmnd[i], port_base + SCSI_FIFO);
618 }
619 outb(SELECT_NO_ATN, port_base + CMD_REG);
620
621 return 0;
622 }
623
624 static int
625 SYM53C500_host_reset(struct scsi_cmnd *SCpnt)
626 {
627 int port_base = SCpnt->device->host->io_port;
628
629 DEB(printk("SYM53C500_host_reset called\n"));
630 SYM53C500_int_host_reset(port_base);
631
632 return SUCCESS;
633 }
634
635 static int
636 SYM53C500_biosparm(struct scsi_device *disk,
637 struct block_device *dev,
638 sector_t capacity, int *info_array)
639 {
640 int size;
641
642 DEB(printk("SYM53C500_biosparm called\n"));
643
644 size = capacity;
645 info_array[0] = 64; /* heads */
646 info_array[1] = 32; /* sectors */
647 info_array[2] = size >> 11; /* cylinders */
648 if (info_array[2] > 1024) { /* big disk */
649 info_array[0] = 255;
650 info_array[1] = 63;
651 info_array[2] = size / (255 * 63);
652 }
653 return 0;
654 }
655
656 static ssize_t
657 SYM53C500_show_pio(struct class_device *cdev, char *buf)
658 {
659 struct Scsi_Host *SHp = class_to_shost(cdev);
660 struct sym53c500_data *data =
661 (struct sym53c500_data *)SHp->hostdata;
662
663 return snprintf(buf, 4, "%d\n", data->fast_pio);
664 }
665
666 static ssize_t
667 SYM53C500_store_pio(struct class_device *cdev, const char *buf, size_t count)
668 {
669 int pio;
670 struct Scsi_Host *SHp = class_to_shost(cdev);
671 struct sym53c500_data *data =
672 (struct sym53c500_data *)SHp->hostdata;
673
674 pio = simple_strtoul(buf, NULL, 0);
675 if (pio == 0 || pio == 1) {
676 data->fast_pio = pio;
677 return count;
678 }
679 else
680 return -EINVAL;
681 }
682
683 /*
684 * SCSI HBA device attributes we want to
685 * make available via sysfs.
686 */
687 static struct class_device_attribute SYM53C500_pio_attr = {
688 .attr = {
689 .name = "fast_pio",
690 .mode = (S_IRUGO | S_IWUSR),
691 },
692 .show = SYM53C500_show_pio,
693 .store = SYM53C500_store_pio,
694 };
695
696 static struct class_device_attribute *SYM53C500_shost_attrs[] = {
697 &SYM53C500_pio_attr,
698 NULL,
699 };
700
701 /*
702 * scsi_host_template initializer
703 */
704 static struct scsi_host_template sym53c500_driver_template = {
705 .module = THIS_MODULE,
706 .name = "SYM53C500",
707 .info = SYM53C500_info,
708 .queuecommand = SYM53C500_queue,
709 .eh_host_reset_handler = SYM53C500_host_reset,
710 .bios_param = SYM53C500_biosparm,
711 .proc_name = "SYM53C500",
712 .can_queue = 1,
713 .this_id = 7,
714 .sg_tablesize = 32,
715 .cmd_per_lun = 1,
716 .use_clustering = ENABLE_CLUSTERING,
717 .shost_attrs = SYM53C500_shost_attrs
718 };
719
720 #define CS_CHECK(fn, ret) \
721 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
722
723 static void
724 SYM53C500_config(dev_link_t *link)
725 {
726 client_handle_t handle = link->handle;
727 struct scsi_info_t *info = link->priv;
728 tuple_t tuple;
729 cisparse_t parse;
730 int i, last_ret, last_fn;
731 int irq_level, port_base;
732 unsigned short tuple_data[32];
733 struct Scsi_Host *host;
734 struct scsi_host_template *tpnt = &sym53c500_driver_template;
735 struct sym53c500_data *data;
736
737 DEBUG(0, "SYM53C500_config(0x%p)\n", link);
738
739 tuple.TupleData = (cisdata_t *)tuple_data;
740 tuple.TupleDataMax = 64;
741 tuple.TupleOffset = 0;
742 tuple.DesiredTuple = CISTPL_CONFIG;
743 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
744 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
745 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
746 link->conf.ConfigBase = parse.config.base;
747
748 tuple.DesiredTuple = CISTPL_MANFID;
749 if ((pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) &&
750 (pcmcia_get_tuple_data(handle, &tuple) == CS_SUCCESS))
751 info->manf_id = le16_to_cpu(tuple.TupleData[0]);
752
753 /* Configure card */
754 link->state |= DEV_CONFIG;
755
756 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
757 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
758 while (1) {
759 if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
760 pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
761 goto next_entry;
762 link->conf.ConfigIndex = parse.cftable_entry.index;
763 link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
764 link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
765
766 if (link->io.BasePort1 != 0) {
767 i = pcmcia_request_io(handle, &link->io);
768 if (i == CS_SUCCESS)
769 break;
770 }
771 next_entry:
772 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
773 }
774
775 CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
776 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
777
778 /*
779 * That's the trouble with copying liberally from another driver.
780 * Some things probably aren't relevant, and I suspect this entire
781 * section dealing with manufacturer IDs can be scrapped. --rct
782 */
783 if ((info->manf_id == MANFID_MACNICA) ||
784 (info->manf_id == MANFID_PIONEER) ||
785 (info->manf_id == 0x0098)) {
786 /* set ATAcmd */
787 outb(0xb4, link->io.BasePort1 + 0xd);
788 outb(0x24, link->io.BasePort1 + 0x9);
789 outb(0x04, link->io.BasePort1 + 0xd);
790 }
791
792 /*
793 * irq_level == 0 implies tpnt->can_queue == 0, which
794 * is not supported in 2.6. Thus, only irq_level > 0
795 * will be allowed.
796 *
797 * Possible port_base values are as follows:
798 *
799 * 0x130, 0x230, 0x280, 0x290,
800 * 0x320, 0x330, 0x340, 0x350
801 */
802 port_base = link->io.BasePort1;
803 irq_level = link->irq.AssignedIRQ;
804
805 DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n",
806 port_base, irq_level, USE_FAST_PIO);)
807
808 chip_init(port_base);
809
810 host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data));
811 if (!host) {
812 printk("SYM53C500: Unable to register host, giving up.\n");
813 goto err_release;
814 }
815
816 data = (struct sym53c500_data *)host->hostdata;
817
818 if (irq_level > 0) {
819 if (request_irq(irq_level, SYM53C500_intr, SA_SHIRQ, "SYM53C500", host)) {
820 printk("SYM53C500: unable to allocate IRQ %d\n", irq_level);
821 goto err_free_scsi;
822 }
823 DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level));
824 } else if (irq_level == 0) {
825 DEB(printk("SYM53C500: No interrupts detected\n"));
826 goto err_free_scsi;
827 } else {
828 DEB(printk("SYM53C500: Shouldn't get here!\n"));
829 goto err_free_scsi;
830 }
831
832 host->unique_id = port_base;
833 host->irq = irq_level;
834 host->io_port = port_base;
835 host->n_io_port = 0x10;
836 host->dma_channel = -1;
837
838 /*
839 * Note fast_pio is set to USE_FAST_PIO by
840 * default, but can be changed via "sysfs".
841 */
842 data->fast_pio = USE_FAST_PIO;
843
844 sprintf(info->node.dev_name, "scsi%d", host->host_no);
845 link->dev = &info->node;
846 info->host = host;
847
848 if (scsi_add_host(host, NULL))
849 goto err_free_irq;
850
851 scsi_scan_host(host);
852
853 goto out; /* SUCCESS */
854
855 err_free_irq:
856 free_irq(irq_level, host);
857 err_free_scsi:
858 scsi_host_put(host);
859 err_release:
860 release_region(port_base, 0x10);
861 printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n");
862
863 out:
864 link->state &= ~DEV_CONFIG_PENDING;
865 return;
866
867 cs_failed:
868 cs_error(link->handle, last_fn, last_ret);
869 SYM53C500_release(link);
870 return;
871 } /* SYM53C500_config */
872
873 static int
874 SYM53C500_event(event_t event, int priority, event_callback_args_t *args)
875 {
876 dev_link_t *link = args->client_data;
877 struct scsi_info_t *info = link->priv;
878
879 DEBUG(1, "SYM53C500_event(0x%06x)\n", event);
880
881 switch (event) {
882 case CS_EVENT_CARD_REMOVAL:
883 link->state &= ~DEV_PRESENT;
884 if (link->state & DEV_CONFIG)
885 SYM53C500_release(link);
886 break;
887 case CS_EVENT_CARD_INSERTION:
888 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
889 SYM53C500_config(link);
890 break;
891 case CS_EVENT_PM_SUSPEND:
892 link->state |= DEV_SUSPEND;
893 /* Fall through... */
894 case CS_EVENT_RESET_PHYSICAL:
895 if (link->state & DEV_CONFIG)
896 pcmcia_release_configuration(link->handle);
897 break;
898 case CS_EVENT_PM_RESUME:
899 link->state &= ~DEV_SUSPEND;
900 /* Fall through... */
901 case CS_EVENT_CARD_RESET:
902 if (link->state & DEV_CONFIG) {
903 pcmcia_request_configuration(link->handle, &link->conf);
904 /* See earlier comment about manufacturer IDs. */
905 if ((info->manf_id == MANFID_MACNICA) ||
906 (info->manf_id == MANFID_PIONEER) ||
907 (info->manf_id == 0x0098)) {
908 outb(0x80, link->io.BasePort1 + 0xd);
909 outb(0x24, link->io.BasePort1 + 0x9);
910 outb(0x04, link->io.BasePort1 + 0xd);
911 }
912 /*
913 * If things don't work after a "resume",
914 * this is a good place to start looking.
915 */
916 SYM53C500_int_host_reset(link->io.BasePort1);
917 }
918 break;
919 }
920 return 0;
921 } /* SYM53C500_event */
922
923 static void
924 SYM53C500_detach(dev_link_t *link)
925 {
926 dev_link_t **linkp;
927
928 DEBUG(0, "SYM53C500_detach(0x%p)\n", link);
929
930 /* Locate device structure */
931 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
932 if (*linkp == link)
933 break;
934 if (*linkp == NULL)
935 return;
936
937 if (link->state & DEV_CONFIG)
938 SYM53C500_release(link);
939
940 if (link->handle)
941 pcmcia_deregister_client(link->handle);
942
943 /* Unlink device structure, free bits. */
944 *linkp = link->next;
945 kfree(link->priv);
946 link->priv = NULL;
947 } /* SYM53C500_detach */
948
949 static dev_link_t *
950 SYM53C500_attach(void)
951 {
952 struct scsi_info_t *info;
953 client_reg_t client_reg;
954 dev_link_t *link;
955 int ret;
956
957 DEBUG(0, "SYM53C500_attach()\n");
958
959 /* Create new SCSI device */
960 info = kmalloc(sizeof(*info), GFP_KERNEL);
961 if (!info)
962 return NULL;
963 memset(info, 0, sizeof(*info));
964 link = &info->link;
965 link->priv = info;
966 link->io.NumPorts1 = 16;
967 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
968 link->io.IOAddrLines = 10;
969 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
970 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
971 link->conf.Attributes = CONF_ENABLE_IRQ;
972 link->conf.Vcc = 50;
973 link->conf.IntType = INT_MEMORY_AND_IO;
974 link->conf.Present = PRESENT_OPTION;
975
976 /* Register with Card Services */
977 link->next = dev_list;
978 dev_list = link;
979 client_reg.dev_info = &dev_info;
980 client_reg.event_handler = &SYM53C500_event;
981 client_reg.EventMask = CS_EVENT_RESET_REQUEST | CS_EVENT_CARD_RESET |
982 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
983 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
984 client_reg.Version = 0x0210;
985 client_reg.event_callback_args.client_data = link;
986 ret = pcmcia_register_client(&link->handle, &client_reg);
987 if (ret != 0) {
988 cs_error(link->handle, RegisterClient, ret);
989 SYM53C500_detach(link);
990 return NULL;
991 }
992
993 return link;
994 } /* SYM53C500_attach */
995
996 MODULE_AUTHOR("Bob Tracy <rct@frus.com>");
997 MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver");
998 MODULE_LICENSE("GPL");
999
1000 static struct pcmcia_driver sym53c500_cs_driver = {
1001 .owner = THIS_MODULE,
1002 .drv = {
1003 .name = "sym53c500_cs",
1004 },
1005 .attach = SYM53C500_attach,
1006 .detach = SYM53C500_detach,
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);
Verdex Pro support