]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - drivers/scsi/pcmcia/sym53c500_cs.c
projects / mirror_ubuntu-bionic-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx
[mirror_ubuntu-bionic-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/slab.h>
58 #include <linux/string.h>
59 #include <linux/ioport.h>
60 #include <linux/blkdev.h>
61 #include <linux/spinlock.h>
62 #include <linux/bitops.h>
63
64 #include <asm/io.h>
65 #include <asm/dma.h>
66 #include <asm/irq.h>
67
68 #include <scsi/scsi_ioctl.h>
69 #include <scsi/scsi_cmnd.h>
70 #include <scsi/scsi_device.h>
71 #include <scsi/scsi.h>
72 #include <scsi/scsi_host.h>
73
74 #include <pcmcia/cs_types.h>
75 #include <pcmcia/cs.h>
76 #include <pcmcia/cistpl.h>
77 #include <pcmcia/ds.h>
78 #include <pcmcia/ciscode.h>
79
80
81 /* ================================================================== */
82
83 #define SYNC_MODE 0 /* Synchronous transfer mode */
84
85 /* Default configuration */
86 #define C1_IMG 0x07 /* ID=7 */
87 #define C2_IMG 0x48 /* FE SCSI2 */
88 #define C3_IMG 0x20 /* CDB */
89 #define C4_IMG 0x04 /* ANE */
90 #define C5_IMG 0xa4 /* ? changed from b6= AA PI SIE POL */
91 #define C7_IMG 0x80 /* added for SYM53C500 t. corner */
92
93 /* Hardware Registers: offsets from io_port (base) */
94
95 /* Control Register Set 0 */
96 #define TC_LSB 0x00 /* transfer counter lsb */
97 #define TC_MSB 0x01 /* transfer counter msb */
98 #define SCSI_FIFO 0x02 /* scsi fifo register */
99 #define CMD_REG 0x03 /* command register */
100 #define STAT_REG 0x04 /* status register */
101 #define DEST_ID 0x04 /* selection/reselection bus id */
102 #define INT_REG 0x05 /* interrupt status register */
103 #define SRTIMOUT 0x05 /* select/reselect timeout reg */
104 #define SEQ_REG 0x06 /* sequence step register */
105 #define SYNCPRD 0x06 /* synchronous transfer period */
106 #define FIFO_FLAGS 0x07 /* indicates # of bytes in fifo */
107 #define SYNCOFF 0x07 /* synchronous offset register */
108 #define CONFIG1 0x08 /* configuration register */
109 #define CLKCONV 0x09 /* clock conversion register */
110 /* #define TESTREG 0x0A */ /* test mode register */
111 #define CONFIG2 0x0B /* configuration 2 register */
112 #define CONFIG3 0x0C /* configuration 3 register */
113 #define CONFIG4 0x0D /* configuration 4 register */
114 #define TC_HIGH 0x0E /* transfer counter high */
115 /* #define FIFO_BOTTOM 0x0F */ /* reserve FIFO byte register */
116
117 /* Control Register Set 1 */
118 /* #define JUMPER_SENSE 0x00 */ /* jumper sense port reg (r/w) */
119 /* #define SRAM_PTR 0x01 */ /* SRAM address pointer reg (r/w) */
120 /* #define SRAM_DATA 0x02 */ /* SRAM data register (r/w) */
121 #define PIO_FIFO 0x04 /* PIO FIFO registers (r/w) */
122 /* #define PIO_FIFO1 0x05 */ /* */
123 /* #define PIO_FIFO2 0x06 */ /* */
124 /* #define PIO_FIFO3 0x07 */ /* */
125 #define PIO_STATUS 0x08 /* PIO status (r/w) */
126 /* #define ATA_CMD 0x09 */ /* ATA command/status reg (r/w) */
127 /* #define ATA_ERR 0x0A */ /* ATA features/error reg (r/w) */
128 #define PIO_FLAG 0x0B /* PIO flag interrupt enable (r/w) */
129 #define CONFIG5 0x09 /* configuration 5 register */
130 /* #define SIGNATURE 0x0E */ /* signature register (r) */
131 /* #define CONFIG6 0x0F */ /* configuration 6 register (r) */
132 #define CONFIG7 0x0d
133
134 /* select register set 0 */
135 #define REG0(x) (outb(C4_IMG, (x) + CONFIG4))
136 /* select register set 1 */
137 #define REG1(x) outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5)
138
139 #if SYM53C500_DEBUG
140 #define DEB(x) x
141 #else
142 #define DEB(x)
143 #endif
144
145 #if VERBOSE_SYM53C500_DEBUG
146 #define VDEB(x) x
147 #else
148 #define VDEB(x)
149 #endif
150
151 #define LOAD_DMA_COUNT(x, count) \
152 outb(count & 0xff, (x) + TC_LSB); \
153 outb((count >> 8) & 0xff, (x) + TC_MSB); \
154 outb((count >> 16) & 0xff, (x) + TC_HIGH);
155
156 /* Chip commands */
157 #define DMA_OP 0x80
158
159 #define SCSI_NOP 0x00
160 #define FLUSH_FIFO 0x01
161 #define CHIP_RESET 0x02
162 #define SCSI_RESET 0x03
163 #define RESELECT 0x40
164 #define SELECT_NO_ATN 0x41
165 #define SELECT_ATN 0x42
166 #define SELECT_ATN_STOP 0x43
167 #define ENABLE_SEL 0x44
168 #define DISABLE_SEL 0x45
169 #define SELECT_ATN3 0x46
170 #define RESELECT3 0x47
171 #define TRANSFER_INFO 0x10
172 #define INIT_CMD_COMPLETE 0x11
173 #define MSG_ACCEPT 0x12
174 #define TRANSFER_PAD 0x18
175 #define SET_ATN 0x1a
176 #define RESET_ATN 0x1b
177 #define SEND_MSG 0x20
178 #define SEND_STATUS 0x21
179 #define SEND_DATA 0x22
180 #define DISCONN_SEQ 0x23
181 #define TERMINATE_SEQ 0x24
182 #define TARG_CMD_COMPLETE 0x25
183 #define DISCONN 0x27
184 #define RECV_MSG 0x28
185 #define RECV_CMD 0x29
186 #define RECV_DATA 0x2a
187 #define RECV_CMD_SEQ 0x2b
188 #define TARGET_ABORT_DMA 0x04
189
190 /* ================================================================== */
191
192 struct scsi_info_t {
193 struct pcmcia_device *p_dev;
194 dev_node_t node;
195 struct Scsi_Host *host;
196 unsigned short manf_id;
197 };
198
199 /*
200 * Repository for per-instance host data.
201 */
202 struct sym53c500_data {
203 struct scsi_cmnd *current_SC;
204 int fast_pio;
205 };
206
207 enum Phase {
208 idle,
209 data_out,
210 data_in,
211 command_ph,
212 status_ph,
213 message_out,
214 message_in
215 };
216
217 /* ================================================================== */
218
219 static void
220 chip_init(int io_port)
221 {
222 REG1(io_port);
223 outb(0x01, io_port + PIO_STATUS);
224 outb(0x00, io_port + PIO_FLAG);
225
226 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
227 outb(C3_IMG, io_port + CONFIG3);
228 outb(C2_IMG, io_port + CONFIG2);
229 outb(C1_IMG, io_port + CONFIG1);
230
231 outb(0x05, io_port + CLKCONV); /* clock conversion factor */
232 outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */
233 outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */
234 outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */
235 }
236
237 static void
238 SYM53C500_int_host_reset(int io_port)
239 {
240 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
241 outb(CHIP_RESET, io_port + CMD_REG);
242 outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */
243 outb(SCSI_RESET, io_port + CMD_REG);
244 chip_init(io_port);
245 }
246
247 static __inline__ int
248 SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
249 {
250 int i;
251 int len; /* current scsi fifo size */
252
253 REG1(base);
254 while (reqlen) {
255 i = inb(base + PIO_STATUS);
256 /* VDEB(printk("pio_status=%x\n", i)); */
257 if (i & 0x80)
258 return 0;
259
260 switch (i & 0x1e) {
261 default:
262 case 0x10: /* fifo empty */
263 len = 0;
264 break;
265 case 0x0:
266 len = 1;
267 break;
268 case 0x8: /* fifo 1/3 full */
269 len = 42;
270 break;
271 case 0xc: /* fifo 2/3 full */
272 len = 84;
273 break;
274 case 0xe: /* fifo full */
275 len = 128;
276 break;
277 }
278
279 if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */
280 return 0;
281 }
282
283 if (len) {
284 if (len > reqlen)
285 len = reqlen;
286
287 if (fast_pio && len > 3) {
288 insl(base + PIO_FIFO, request, len >> 2);
289 request += len & 0xfc;
290 reqlen -= len & 0xfc;
291 } else {
292 while (len--) {
293 *request++ = inb(base + PIO_FIFO);
294 reqlen--;
295 }
296 }
297 }
298 }
299 return 0;
300 }
301
302 static __inline__ int
303 SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
304 {
305 int i = 0;
306 int len; /* current scsi fifo size */
307
308 REG1(base);
309 while (reqlen && !(i & 0x40)) {
310 i = inb(base + PIO_STATUS);
311 /* VDEB(printk("pio_status=%x\n", i)); */
312 if (i & 0x80) /* error */
313 return 0;
314
315 switch (i & 0x1e) {
316 case 0x10:
317 len = 128;
318 break;
319 case 0x0:
320 len = 84;
321 break;
322 case 0x8:
323 len = 42;
324 break;
325 case 0xc:
326 len = 1;
327 break;
328 default:
329 case 0xe:
330 len = 0;
331 break;
332 }
333
334 if (len) {
335 if (len > reqlen)
336 len = reqlen;
337
338 if (fast_pio && len > 3) {
339 outsl(base + PIO_FIFO, request, len >> 2);
340 request += len & 0xfc;
341 reqlen -= len & 0xfc;
342 } else {
343 while (len--) {
344 outb(*request++, base + PIO_FIFO);
345 reqlen--;
346 }
347 }
348 }
349 }
350 return 0;
351 }
352
353 static irqreturn_t
354 SYM53C500_intr(int irq, void *dev_id)
355 {
356 unsigned long flags;
357 struct Scsi_Host *dev = dev_id;
358 DEB(unsigned char fifo_size;)
359 DEB(unsigned char seq_reg;)
360 unsigned char status, int_reg;
361 unsigned char pio_status;
362 int port_base = dev->io_port;
363 struct sym53c500_data *data =
364 (struct sym53c500_data *)dev->hostdata;
365 struct scsi_cmnd *curSC = data->current_SC;
366 int fast_pio = data->fast_pio;
367
368 spin_lock_irqsave(dev->host_lock, flags);
369
370 VDEB(printk("SYM53C500_intr called\n"));
371
372 REG1(port_base);
373 pio_status = inb(port_base + PIO_STATUS);
374 REG0(port_base);
375 status = inb(port_base + STAT_REG);
376 DEB(seq_reg = inb(port_base + SEQ_REG));
377 int_reg = inb(port_base + INT_REG);
378 DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f);
379
380 #if SYM53C500_DEBUG
381 printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x",
382 status, seq_reg, int_reg, fifo_size);
383 printk(", pio=%02x\n", pio_status);
384 #endif /* SYM53C500_DEBUG */
385
386 if (int_reg & 0x80) { /* SCSI reset intr */
387 DEB(printk("SYM53C500: reset intr received\n"));
388 curSC->result = DID_RESET << 16;
389 goto idle_out;
390 }
391
392 if (pio_status & 0x80) {
393 printk("SYM53C500: Warning: PIO error!\n");
394 curSC->result = DID_ERROR << 16;
395 goto idle_out;
396 }
397
398 if (status & 0x20) { /* Parity error */
399 printk("SYM53C500: Warning: parity error!\n");
400 curSC->result = DID_PARITY << 16;
401 goto idle_out;
402 }
403
404 if (status & 0x40) { /* Gross error */
405 printk("SYM53C500: Warning: gross error!\n");
406 curSC->result = DID_ERROR << 16;
407 goto idle_out;
408 }
409
410 if (int_reg & 0x20) { /* Disconnect */
411 DEB(printk("SYM53C500: disconnect intr received\n"));
412 if (curSC->SCp.phase != message_in) { /* Unexpected disconnect */
413 curSC->result = DID_NO_CONNECT << 16;
414 } else { /* Command complete, return status and message */
415 curSC->result = (curSC->SCp.Status & 0xff)
416 | ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16);
417 }
418 goto idle_out;
419 }
420
421 switch (status & 0x07) { /* scsi phase */
422 case 0x00: /* DATA-OUT */
423 if (int_reg & 0x10) { /* Target requesting info transfer */
424 struct scatterlist *sg;
425 int i;
426
427 curSC->SCp.phase = data_out;
428 VDEB(printk("SYM53C500: Data-Out phase\n"));
429 outb(FLUSH_FIFO, port_base + CMD_REG);
430 LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */
431 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
432
433 scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {
434 SYM53C500_pio_write(fast_pio, port_base,
435 sg_virt(sg), sg->length);
436 }
437 REG0(port_base);
438 }
439 break;
440
441 case 0x01: /* DATA-IN */
442 if (int_reg & 0x10) { /* Target requesting info transfer */
443 struct scatterlist *sg;
444 int i;
445
446 curSC->SCp.phase = data_in;
447 VDEB(printk("SYM53C500: Data-In phase\n"));
448 outb(FLUSH_FIFO, port_base + CMD_REG);
449 LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */
450 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
451
452 scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {
453 SYM53C500_pio_read(fast_pio, port_base,
454 sg_virt(sg), sg->length);
455 }
456 REG0(port_base);
457 }
458 break;
459
460 case 0x02: /* COMMAND */
461 curSC->SCp.phase = command_ph;
462 printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n");
463 break;
464
465 case 0x03: /* STATUS */
466 curSC->SCp.phase = status_ph;
467 VDEB(printk("SYM53C500: Status phase\n"));
468 outb(FLUSH_FIFO, port_base + CMD_REG);
469 outb(INIT_CMD_COMPLETE, port_base + CMD_REG);
470 break;
471
472 case 0x04: /* Reserved */
473 case 0x05: /* Reserved */
474 printk("SYM53C500: WARNING: Reserved phase!!!\n");
475 break;
476
477 case 0x06: /* MESSAGE-OUT */
478 DEB(printk("SYM53C500: Message-Out phase\n"));
479 curSC->SCp.phase = message_out;
480 outb(SET_ATN, port_base + CMD_REG); /* Reject the message */
481 outb(MSG_ACCEPT, port_base + CMD_REG);
482 break;
483
484 case 0x07: /* MESSAGE-IN */
485 VDEB(printk("SYM53C500: Message-In phase\n"));
486 curSC->SCp.phase = message_in;
487
488 curSC->SCp.Status = inb(port_base + SCSI_FIFO);
489 curSC->SCp.Message = inb(port_base + SCSI_FIFO);
490
491 VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f));
492 DEB(printk("Status = %02x Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message));
493
494 if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) {
495 outb(SET_ATN, port_base + CMD_REG); /* Reject message */
496 DEB(printk("Discarding SAVE_POINTERS message\n"));
497 }
498 outb(MSG_ACCEPT, port_base + CMD_REG);
499 break;
500 }
501 out:
502 spin_unlock_irqrestore(dev->host_lock, flags);
503 return IRQ_HANDLED;
504
505 idle_out:
506 curSC->SCp.phase = idle;
507 curSC->scsi_done(curSC);
508 goto out;
509 }
510
511 static void
512 SYM53C500_release(struct pcmcia_device *link)
513 {
514 struct scsi_info_t *info = link->priv;
515 struct Scsi_Host *shost = info->host;
516
517 dev_dbg(&link->dev, "SYM53C500_release\n");
518
519 /*
520 * Do this before releasing/freeing resources.
521 */
522 scsi_remove_host(shost);
523
524 /*
525 * Interrupts getting hosed on card removal. Try
526 * the following code, mostly from qlogicfas.c.
527 */
528 if (shost->irq)
529 free_irq(shost->irq, shost);
530 if (shost->io_port && shost->n_io_port)
531 release_region(shost->io_port, shost->n_io_port);
532
533 pcmcia_disable_device(link);
534
535 scsi_host_put(shost);
536 } /* SYM53C500_release */
537
538 static const char*
539 SYM53C500_info(struct Scsi_Host *SChost)
540 {
541 static char info_msg[256];
542 struct sym53c500_data *data =
543 (struct sym53c500_data *)SChost->hostdata;
544
545 DEB(printk("SYM53C500_info called\n"));
546 (void)snprintf(info_msg, sizeof(info_msg),
547 "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.",
548 SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow");
549 return (info_msg);
550 }
551
552 static int
553 SYM53C500_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
554 {
555 int i;
556 int port_base = SCpnt->device->host->io_port;
557 struct sym53c500_data *data =
558 (struct sym53c500_data *)SCpnt->device->host->hostdata;
559
560 VDEB(printk("SYM53C500_queue called\n"));
561
562 DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n",
563 SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id,
564 SCpnt->device->lun, scsi_bufflen(SCpnt)));
565
566 VDEB(for (i = 0; i < SCpnt->cmd_len; i++)
567 printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i]));
568 VDEB(printk("\n"));
569
570 data->current_SC = SCpnt;
571 data->current_SC->scsi_done = done;
572 data->current_SC->SCp.phase = command_ph;
573 data->current_SC->SCp.Status = 0;
574 data->current_SC->SCp.Message = 0;
575
576 /* We are locked here already by the mid layer */
577 REG0(port_base);
578 outb(scmd_id(SCpnt), port_base + DEST_ID); /* set destination */
579 outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */
580
581 for (i = 0; i < SCpnt->cmd_len; i++) {
582 outb(SCpnt->cmnd[i], port_base + SCSI_FIFO);
583 }
584 outb(SELECT_NO_ATN, port_base + CMD_REG);
585
586 return 0;
587 }
588
589 static int
590 SYM53C500_host_reset(struct scsi_cmnd *SCpnt)
591 {
592 int port_base = SCpnt->device->host->io_port;
593
594 DEB(printk("SYM53C500_host_reset called\n"));
595 spin_lock_irq(SCpnt->device->host->host_lock);
596 SYM53C500_int_host_reset(port_base);
597 spin_unlock_irq(SCpnt->device->host->host_lock);
598
599 return SUCCESS;
600 }
601
602 static int
603 SYM53C500_biosparm(struct scsi_device *disk,
604 struct block_device *dev,
605 sector_t capacity, int *info_array)
606 {
607 int size;
608
609 DEB(printk("SYM53C500_biosparm called\n"));
610
611 size = capacity;
612 info_array[0] = 64; /* heads */
613 info_array[1] = 32; /* sectors */
614 info_array[2] = size >> 11; /* cylinders */
615 if (info_array[2] > 1024) { /* big disk */
616 info_array[0] = 255;
617 info_array[1] = 63;
618 info_array[2] = size / (255 * 63);
619 }
620 return 0;
621 }
622
623 static ssize_t
624 SYM53C500_show_pio(struct device *dev, struct device_attribute *attr,
625 char *buf)
626 {
627 struct Scsi_Host *SHp = class_to_shost(dev);
628 struct sym53c500_data *data =
629 (struct sym53c500_data *)SHp->hostdata;
630
631 return snprintf(buf, 4, "%d\n", data->fast_pio);
632 }
633
634 static ssize_t
635 SYM53C500_store_pio(struct device *dev, struct device_attribute *attr,
636 const char *buf, size_t count)
637 {
638 int pio;
639 struct Scsi_Host *SHp = class_to_shost(dev);
640 struct sym53c500_data *data =
641 (struct sym53c500_data *)SHp->hostdata;
642
643 pio = simple_strtoul(buf, NULL, 0);
644 if (pio == 0 || pio == 1) {
645 data->fast_pio = pio;
646 return count;
647 }
648 else
649 return -EINVAL;
650 }
651
652 /*
653 * SCSI HBA device attributes we want to
654 * make available via sysfs.
655 */
656 static struct device_attribute SYM53C500_pio_attr = {
657 .attr = {
658 .name = "fast_pio",
659 .mode = (S_IRUGO | S_IWUSR),
660 },
661 .show = SYM53C500_show_pio,
662 .store = SYM53C500_store_pio,
663 };
664
665 static struct device_attribute *SYM53C500_shost_attrs[] = {
666 &SYM53C500_pio_attr,
667 NULL,
668 };
669
670 /*
671 * scsi_host_template initializer
672 */
673 static struct scsi_host_template sym53c500_driver_template = {
674 .module = THIS_MODULE,
675 .name = "SYM53C500",
676 .info = SYM53C500_info,
677 .queuecommand = SYM53C500_queue,
678 .eh_host_reset_handler = SYM53C500_host_reset,
679 .bios_param = SYM53C500_biosparm,
680 .proc_name = "SYM53C500",
681 .can_queue = 1,
682 .this_id = 7,
683 .sg_tablesize = 32,
684 .cmd_per_lun = 1,
685 .use_clustering = ENABLE_CLUSTERING,
686 .shost_attrs = SYM53C500_shost_attrs
687 };
688
689 static int SYM53C500_config_check(struct pcmcia_device *p_dev,
690 cistpl_cftable_entry_t *cfg,
691 cistpl_cftable_entry_t *dflt,
692 unsigned int vcc,
693 void *priv_data)
694 {
695 p_dev->io.BasePort1 = cfg->io.win[0].base;
696 p_dev->io.NumPorts1 = cfg->io.win[0].len;
697
698 if (p_dev->io.BasePort1 == 0)
699 return -ENODEV;
700
701 return pcmcia_request_io(p_dev, &p_dev->io);
702 }
703
704 static int
705 SYM53C500_config(struct pcmcia_device *link)
706 {
707 struct scsi_info_t *info = link->priv;
708 int ret;
709 int irq_level, port_base;
710 struct Scsi_Host *host;
711 struct scsi_host_template *tpnt = &sym53c500_driver_template;
712 struct sym53c500_data *data;
713
714 dev_dbg(&link->dev, "SYM53C500_config\n");
715
716 info->manf_id = link->manf_id;
717
718 ret = pcmcia_loop_config(link, SYM53C500_config_check, NULL);
719 if (ret)
720 goto failed;
721
722 ret = pcmcia_request_irq(link, &link->irq);
723 if (ret)
724 goto failed;
725
726 ret = pcmcia_request_configuration(link, &link->conf);
727 if (ret)
728 goto failed;
729
730 /*
731 * That's the trouble with copying liberally from another driver.
732 * Some things probably aren't relevant, and I suspect this entire
733 * section dealing with manufacturer IDs can be scrapped. --rct
734 */
735 if ((info->manf_id == MANFID_MACNICA) ||
736 (info->manf_id == MANFID_PIONEER) ||
737 (info->manf_id == 0x0098)) {
738 /* set ATAcmd */
739 outb(0xb4, link->io.BasePort1 + 0xd);
740 outb(0x24, link->io.BasePort1 + 0x9);
741 outb(0x04, link->io.BasePort1 + 0xd);
742 }
743
744 /*
745 * irq_level == 0 implies tpnt->can_queue == 0, which
746 * is not supported in 2.6. Thus, only irq_level > 0
747 * will be allowed.
748 *
749 * Possible port_base values are as follows:
750 *
751 * 0x130, 0x230, 0x280, 0x290,
752 * 0x320, 0x330, 0x340, 0x350
753 */
754 port_base = link->io.BasePort1;
755 irq_level = link->irq.AssignedIRQ;
756
757 DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n",
758 port_base, irq_level, USE_FAST_PIO);)
759
760 chip_init(port_base);
761
762 host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data));
763 if (!host) {
764 printk("SYM53C500: Unable to register host, giving up.\n");
765 goto err_release;
766 }
767
768 data = (struct sym53c500_data *)host->hostdata;
769
770 if (irq_level > 0) {
771 if (request_irq(irq_level, SYM53C500_intr, IRQF_SHARED, "SYM53C500", host)) {
772 printk("SYM53C500: unable to allocate IRQ %d\n", irq_level);
773 goto err_free_scsi;
774 }
775 DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level));
776 } else if (irq_level == 0) {
777 DEB(printk("SYM53C500: No interrupts detected\n"));
778 goto err_free_scsi;
779 } else {
780 DEB(printk("SYM53C500: Shouldn't get here!\n"));
781 goto err_free_scsi;
782 }
783
784 host->unique_id = port_base;
785 host->irq = irq_level;
786 host->io_port = port_base;
787 host->n_io_port = 0x10;
788 host->dma_channel = -1;
789
790 /*
791 * Note fast_pio is set to USE_FAST_PIO by
792 * default, but can be changed via "sysfs".
793 */
794 data->fast_pio = USE_FAST_PIO;
795
796 sprintf(info->node.dev_name, "scsi%d", host->host_no);
797 link->dev_node = &info->node;
798 info->host = host;
799
800 if (scsi_add_host(host, NULL))
801 goto err_free_irq;
802
803 scsi_scan_host(host);
804
805 return 0;
806
807 err_free_irq:
808 free_irq(irq_level, host);
809 err_free_scsi:
810 scsi_host_put(host);
811 err_release:
812 release_region(port_base, 0x10);
813 printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n");
814 return -ENODEV;
815
816 failed:
817 SYM53C500_release(link);
818 return -ENODEV;
819 } /* SYM53C500_config */
820
821 static int sym53c500_resume(struct pcmcia_device *link)
822 {
823 struct scsi_info_t *info = link->priv;
824
825 /* See earlier comment about manufacturer IDs. */
826 if ((info->manf_id == MANFID_MACNICA) ||
827 (info->manf_id == MANFID_PIONEER) ||
828 (info->manf_id == 0x0098)) {
829 outb(0x80, link->io.BasePort1 + 0xd);
830 outb(0x24, link->io.BasePort1 + 0x9);
831 outb(0x04, link->io.BasePort1 + 0xd);
832 }
833 /*
834 * If things don't work after a "resume",
835 * this is a good place to start looking.
836 */
837 SYM53C500_int_host_reset(link->io.BasePort1);
838
839 return 0;
840 }
841
842 static void
843 SYM53C500_detach(struct pcmcia_device *link)
844 {
845 dev_dbg(&link->dev, "SYM53C500_detach\n");
846
847 SYM53C500_release(link);
848
849 kfree(link->priv);
850 link->priv = NULL;
851 } /* SYM53C500_detach */
852
853 static int
854 SYM53C500_probe(struct pcmcia_device *link)
855 {
856 struct scsi_info_t *info;
857
858 dev_dbg(&link->dev, "SYM53C500_attach()\n");
859
860 /* Create new SCSI device */
861 info = kzalloc(sizeof(*info), GFP_KERNEL);
862 if (!info)
863 return -ENOMEM;
864 info->p_dev = link;
865 link->priv = info;
866 link->io.NumPorts1 = 16;
867 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
868 link->io.IOAddrLines = 10;
869 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
870 link->conf.Attributes = CONF_ENABLE_IRQ;
871 link->conf.IntType = INT_MEMORY_AND_IO;
872
873 return SYM53C500_config(link);
874 } /* SYM53C500_attach */
875
876 MODULE_AUTHOR("Bob Tracy <rct@frus.com>");
877 MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver");
878 MODULE_LICENSE("GPL");
879
880 static struct pcmcia_device_id sym53c500_ids[] = {
881 PCMCIA_DEVICE_PROD_ID12("BASICS by New Media Corporation", "SCSI Sym53C500", 0x23c78a9d, 0x0099e7f7),
882 PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "SCSI Bus Toaster Sym53C500", 0x085a850b, 0x45432eb8),
883 PCMCIA_DEVICE_PROD_ID2("SCSI9000", 0x21648f44),
884 PCMCIA_DEVICE_NULL,
885 };
886 MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids);
887
888 static struct pcmcia_driver sym53c500_cs_driver = {
889 .owner = THIS_MODULE,
890 .drv = {
891 .name = "sym53c500_cs",
892 },
893 .probe = SYM53C500_probe,
894 .remove = SYM53C500_detach,
895 .id_table = sym53c500_ids,
896 .resume = sym53c500_resume,
897 };
898
899 static int __init
900 init_sym53c500_cs(void)
901 {
902 return pcmcia_register_driver(&sym53c500_cs_driver);
903 }
904
905 static void __exit
906 exit_sym53c500_cs(void)
907 {
908 pcmcia_unregister_driver(&sym53c500_cs_driver);
909 }
910
911 module_init(init_sym53c500_cs);
912 module_exit(exit_sym53c500_cs);
ubuntu-bionic-kernel mirror