1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * sym53c500_cs.c Bob Tracy (rct@frus.com)
4 *
5 * A rewrite of the pcmcia-cs add-on driver for newer (circa 1997)
6 * New Media Bus Toaster PCMCIA SCSI cards using the Symbios Logic
7 * 53c500 controller: intended for use with 2.6 and later kernels.
8 * The pcmcia-cs add-on version of this driver is not supported
9 * beyond 2.4. It consisted of three files with history/copyright
10 * information as follows:
11 *
12 * SYM53C500.h
13 * Bob Tracy (rct@frus.com)
14 * Original by Tom Corner (tcorner@via.at).
15 * Adapted from NCR53c406a.h which is Copyrighted (C) 1994
16 * Normunds Saumanis (normunds@rx.tech.swh.lv)
17 *
18 * SYM53C500.c
19 * Bob Tracy (rct@frus.com)
20 * Original driver by Tom Corner (tcorner@via.at) was adapted
21 * from NCR53c406a.c which is Copyrighted (C) 1994, 1995, 1996
22 * Normunds Saumanis (normunds@fi.ibm.com)
23 *
24 * sym53c500.c
25 * Bob Tracy (rct@frus.com)
26 * Original by Tom Corner (tcorner@via.at) was adapted from a
27 * driver for the Qlogic SCSI card written by
28 * David Hinds (dhinds@allegro.stanford.edu).
29 */
30
31 #define SYM53C500_DEBUG 0
32 #define VERBOSE_SYM53C500_DEBUG 0
33
34 /*
35 * Set this to 0 if you encounter kernel lockups while transferring
36 * data in PIO mode. Note this can be changed via "sysfs".
37 */
38 #define USE_FAST_PIO 1
39
40 /* =============== End of user configurable parameters ============== */
41
42 #include <linux/module.h>
43 #include <linux/moduleparam.h>
44 #include <linux/errno.h>
45 #include <linux/init.h>
46 #include <linux/interrupt.h>
47 #include <linux/kernel.h>
48 #include <linux/slab.h>
49 #include <linux/string.h>
50 #include <linux/ioport.h>
51 #include <linux/blkdev.h>
52 #include <linux/spinlock.h>
53 #include <linux/bitops.h>
54
55 #include <asm/io.h>
56 #include <asm/dma.h>
57 #include <asm/irq.h>
58
59 #include <scsi/scsi_ioctl.h>
60 #include <scsi/scsi_cmnd.h>
61 #include <scsi/scsi_device.h>
62 #include <scsi/scsi.h>
63 #include <scsi/scsi_host.h>
64
65 #include <pcmcia/cistpl.h>
66 #include <pcmcia/ds.h>
67 #include <pcmcia/ciscode.h>
68
69
70 /* ================================================================== */
71
72 #define SYNC_MODE 0 /* Synchronous transfer mode */
73
74 /* Default configuration */
75 #define C1_IMG 0x07 /* ID=7 */
76 #define C2_IMG 0x48 /* FE SCSI2 */
77 #define C3_IMG 0x20 /* CDB */
78 #define C4_IMG 0x04 /* ANE */
79 #define C5_IMG 0xa4 /* ? changed from b6= AA PI SIE POL */
80 #define C7_IMG 0x80 /* added for SYM53C500 t. corner */
81
82 /* Hardware Registers: offsets from io_port (base) */
83
84 /* Control Register Set 0 */
85 #define TC_LSB 0x00 /* transfer counter lsb */
86 #define TC_MSB 0x01 /* transfer counter msb */
87 #define SCSI_FIFO 0x02 /* scsi fifo register */
88 #define CMD_REG 0x03 /* command register */
89 #define STAT_REG 0x04 /* status register */
90 #define DEST_ID 0x04 /* selection/reselection bus id */
91 #define INT_REG 0x05 /* interrupt status register */
92 #define SRTIMOUT 0x05 /* select/reselect timeout reg */
93 #define SEQ_REG 0x06 /* sequence step register */
94 #define SYNCPRD 0x06 /* synchronous transfer period */
95 #define FIFO_FLAGS 0x07 /* indicates # of bytes in fifo */
96 #define SYNCOFF 0x07 /* synchronous offset register */
97 #define CONFIG1 0x08 /* configuration register */
98 #define CLKCONV 0x09 /* clock conversion register */
99 /* #define TESTREG 0x0A */ /* test mode register */
100 #define CONFIG2 0x0B /* configuration 2 register */
101 #define CONFIG3 0x0C /* configuration 3 register */
102 #define CONFIG4 0x0D /* configuration 4 register */
103 #define TC_HIGH 0x0E /* transfer counter high */
104 /* #define FIFO_BOTTOM 0x0F */ /* reserve FIFO byte register */
105
106 /* Control Register Set 1 */
107 /* #define JUMPER_SENSE 0x00 */ /* jumper sense port reg (r/w) */
108 /* #define SRAM_PTR 0x01 */ /* SRAM address pointer reg (r/w) */
109 /* #define SRAM_DATA 0x02 */ /* SRAM data register (r/w) */
110 #define PIO_FIFO 0x04 /* PIO FIFO registers (r/w) */
111 /* #define PIO_FIFO1 0x05 */ /* */
112 /* #define PIO_FIFO2 0x06 */ /* */
113 /* #define PIO_FIFO3 0x07 */ /* */
114 #define PIO_STATUS 0x08 /* PIO status (r/w) */
115 /* #define ATA_CMD 0x09 */ /* ATA command/status reg (r/w) */
116 /* #define ATA_ERR 0x0A */ /* ATA features/error reg (r/w) */
117 #define PIO_FLAG 0x0B /* PIO flag interrupt enable (r/w) */
118 #define CONFIG5 0x09 /* configuration 5 register */
119 /* #define SIGNATURE 0x0E */ /* signature register (r) */
120 /* #define CONFIG6 0x0F */ /* configuration 6 register (r) */
121 #define CONFIG7 0x0d
122
123 /* select register set 0 */
124 #define REG0(x) (outb(C4_IMG, (x) + CONFIG4))
125 /* select register set 1 */
126 #define REG1(x) outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5)
127
128 #if SYM53C500_DEBUG
129 #define DEB(x) x
130 #else
131 #define DEB(x)
132 #endif
133
134 #if VERBOSE_SYM53C500_DEBUG
135 #define VDEB(x) x
136 #else
137 #define VDEB(x)
138 #endif
139
140 #define LOAD_DMA_COUNT(x, count) \
141 outb(count & 0xff, (x) + TC_LSB); \
142 outb((count >> 8) & 0xff, (x) + TC_MSB); \
143 outb((count >> 16) & 0xff, (x) + TC_HIGH);
144
145 /* Chip commands */
146 #define DMA_OP 0x80
147
148 #define SCSI_NOP 0x00
149 #define FLUSH_FIFO 0x01
150 #define CHIP_RESET 0x02
151 #define SCSI_RESET 0x03
152 #define RESELECT 0x40
153 #define SELECT_NO_ATN 0x41
154 #define SELECT_ATN 0x42
155 #define SELECT_ATN_STOP 0x43
156 #define ENABLE_SEL 0x44
157 #define DISABLE_SEL 0x45
158 #define SELECT_ATN3 0x46
159 #define RESELECT3 0x47
160 #define TRANSFER_INFO 0x10
161 #define INIT_CMD_COMPLETE 0x11
162 #define MSG_ACCEPT 0x12
163 #define TRANSFER_PAD 0x18
164 #define SET_ATN 0x1a
165 #define RESET_ATN 0x1b
166 #define SEND_MSG 0x20
167 #define SEND_STATUS 0x21
168 #define SEND_DATA 0x22
169 #define DISCONN_SEQ 0x23
170 #define TERMINATE_SEQ 0x24
171 #define TARG_CMD_COMPLETE 0x25
172 #define DISCONN 0x27
173 #define RECV_MSG 0x28
174 #define RECV_CMD 0x29
175 #define RECV_DATA 0x2a
176 #define RECV_CMD_SEQ 0x2b
177 #define TARGET_ABORT_DMA 0x04
178
179 /* ================================================================== */
180
181 struct scsi_info_t {
182 struct pcmcia_device *p_dev;
183 struct Scsi_Host *host;
184 unsigned short manf_id;
185 };
186
187 /*
188 * Repository for per-instance host data.
189 */
190 struct sym53c500_data {
191 struct scsi_cmnd *current_SC;
192 int fast_pio;
193 };
194
195 struct sym53c500_cmd_priv {
196 int status;
197 int message;
198 int phase;
199 };
200
201 enum Phase {
202 idle,
203 data_out,
204 data_in,
205 command_ph,
206 status_ph,
207 message_out,
208 message_in
209 };
210
211 /* ================================================================== */
212
213 static void
chip_init(int io_port)214 chip_init(int io_port)
215 {
216 REG1(io_port);
217 outb(0x01, io_port + PIO_STATUS);
218 outb(0x00, io_port + PIO_FLAG);
219
220 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
221 outb(C3_IMG, io_port + CONFIG3);
222 outb(C2_IMG, io_port + CONFIG2);
223 outb(C1_IMG, io_port + CONFIG1);
224
225 outb(0x05, io_port + CLKCONV); /* clock conversion factor */
226 outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */
227 outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */
228 outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */
229 }
230
231 static void
SYM53C500_int_host_reset(int io_port)232 SYM53C500_int_host_reset(int io_port)
233 {
234 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
235 outb(CHIP_RESET, io_port + CMD_REG);
236 outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */
237 outb(SCSI_RESET, io_port + CMD_REG);
238 chip_init(io_port);
239 }
240
241 static __inline__ int
SYM53C500_pio_read(int fast_pio,int base,unsigned char * request,unsigned int reqlen)242 SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
243 {
244 int i;
245 int len; /* current scsi fifo size */
246
247 REG1(base);
248 while (reqlen) {
249 i = inb(base + PIO_STATUS);
250 /* VDEB(printk("pio_status=%x\n", i)); */
251 if (i & 0x80)
252 return 0;
253
254 switch (i & 0x1e) {
255 default:
256 case 0x10: /* fifo empty */
257 len = 0;
258 break;
259 case 0x0:
260 len = 1;
261 break;
262 case 0x8: /* fifo 1/3 full */
263 len = 42;
264 break;
265 case 0xc: /* fifo 2/3 full */
266 len = 84;
267 break;
268 case 0xe: /* fifo full */
269 len = 128;
270 break;
271 }
272
273 if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */
274 return 0;
275 }
276
277 if (len) {
278 if (len > reqlen)
279 len = reqlen;
280
281 if (fast_pio && len > 3) {
282 insl(base + PIO_FIFO, request, len >> 2);
283 request += len & 0xfc;
284 reqlen -= len & 0xfc;
285 } else {
286 while (len--) {
287 *request++ = inb(base + PIO_FIFO);
288 reqlen--;
289 }
290 }
291 }
292 }
293 return 0;
294 }
295
296 static __inline__ int
SYM53C500_pio_write(int fast_pio,int base,unsigned char * request,unsigned int reqlen)297 SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
298 {
299 int i = 0;
300 int len; /* current scsi fifo size */
301
302 REG1(base);
303 while (reqlen && !(i & 0x40)) {
304 i = inb(base + PIO_STATUS);
305 /* VDEB(printk("pio_status=%x\n", i)); */
306 if (i & 0x80) /* error */
307 return 0;
308
309 switch (i & 0x1e) {
310 case 0x10:
311 len = 128;
312 break;
313 case 0x0:
314 len = 84;
315 break;
316 case 0x8:
317 len = 42;
318 break;
319 case 0xc:
320 len = 1;
321 break;
322 default:
323 case 0xe:
324 len = 0;
325 break;
326 }
327
328 if (len) {
329 if (len > reqlen)
330 len = reqlen;
331
332 if (fast_pio && len > 3) {
333 outsl(base + PIO_FIFO, request, len >> 2);
334 request += len & 0xfc;
335 reqlen -= len & 0xfc;
336 } else {
337 while (len--) {
338 outb(*request++, base + PIO_FIFO);
339 reqlen--;
340 }
341 }
342 }
343 }
344 return 0;
345 }
346
347 static irqreturn_t
SYM53C500_intr(int irq,void * dev_id)348 SYM53C500_intr(int irq, void *dev_id)
349 {
350 unsigned long flags;
351 struct Scsi_Host *dev = dev_id;
352 DEB(unsigned char fifo_size;)
353 DEB(unsigned char seq_reg;)
354 unsigned char status, int_reg;
355 unsigned char pio_status;
356 int port_base = dev->io_port;
357 struct sym53c500_data *data =
358 (struct sym53c500_data *)dev->hostdata;
359 struct scsi_cmnd *curSC = data->current_SC;
360 struct sym53c500_cmd_priv *scp = scsi_cmd_priv(curSC);
361 int fast_pio = data->fast_pio;
362
363 spin_lock_irqsave(dev->host_lock, flags);
364
365 VDEB(printk("SYM53C500_intr called\n"));
366
367 REG1(port_base);
368 pio_status = inb(port_base + PIO_STATUS);
369 REG0(port_base);
370 status = inb(port_base + STAT_REG);
371 DEB(seq_reg = inb(port_base + SEQ_REG));
372 int_reg = inb(port_base + INT_REG);
373 DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f);
374
375 #if SYM53C500_DEBUG
376 printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x",
377 status, seq_reg, int_reg, fifo_size);
378 printk(", pio=%02x\n", pio_status);
379 #endif /* SYM53C500_DEBUG */
380
381 if (int_reg & 0x80) { /* SCSI reset intr */
382 DEB(printk("SYM53C500: reset intr received\n"));
383 curSC->result = DID_RESET << 16;
384 goto idle_out;
385 }
386
387 if (pio_status & 0x80) {
388 printk("SYM53C500: Warning: PIO error!\n");
389 curSC->result = DID_ERROR << 16;
390 goto idle_out;
391 }
392
393 if (status & 0x20) { /* Parity error */
394 printk("SYM53C500: Warning: parity error!\n");
395 curSC->result = DID_PARITY << 16;
396 goto idle_out;
397 }
398
399 if (status & 0x40) { /* Gross error */
400 printk("SYM53C500: Warning: gross error!\n");
401 curSC->result = DID_ERROR << 16;
402 goto idle_out;
403 }
404
405 if (int_reg & 0x20) { /* Disconnect */
406 DEB(printk("SYM53C500: disconnect intr received\n"));
407 if (scp->phase != message_in) { /* Unexpected disconnect */
408 curSC->result = DID_NO_CONNECT << 16;
409 } else { /* Command complete, return status and message */
410 curSC->result = (scp->status & 0xff) |
411 ((scp->message & 0xff) << 8) | (DID_OK << 16);
412 }
413 goto idle_out;
414 }
415
416 switch (status & 0x07) { /* scsi phase */
417 case 0x00: /* DATA-OUT */
418 if (int_reg & 0x10) { /* Target requesting info transfer */
419 struct scatterlist *sg;
420 int i;
421
422 scp->phase = data_out;
423 VDEB(printk("SYM53C500: Data-Out phase\n"));
424 outb(FLUSH_FIFO, port_base + CMD_REG);
425 LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */
426 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
427
428 scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {
429 SYM53C500_pio_write(fast_pio, port_base,
430 sg_virt(sg), sg->length);
431 }
432 REG0(port_base);
433 }
434 break;
435
436 case 0x01: /* DATA-IN */
437 if (int_reg & 0x10) { /* Target requesting info transfer */
438 struct scatterlist *sg;
439 int i;
440
441 scp->phase = data_in;
442 VDEB(printk("SYM53C500: Data-In phase\n"));
443 outb(FLUSH_FIFO, port_base + CMD_REG);
444 LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */
445 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
446
447 scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {
448 SYM53C500_pio_read(fast_pio, port_base,
449 sg_virt(sg), sg->length);
450 }
451 REG0(port_base);
452 }
453 break;
454
455 case 0x02: /* COMMAND */
456 scp->phase = command_ph;
457 printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n");
458 break;
459
460 case 0x03: /* STATUS */
461 scp->phase = status_ph;
462 VDEB(printk("SYM53C500: Status phase\n"));
463 outb(FLUSH_FIFO, port_base + CMD_REG);
464 outb(INIT_CMD_COMPLETE, port_base + CMD_REG);
465 break;
466
467 case 0x04: /* Reserved */
468 case 0x05: /* Reserved */
469 printk("SYM53C500: WARNING: Reserved phase!!!\n");
470 break;
471
472 case 0x06: /* MESSAGE-OUT */
473 DEB(printk("SYM53C500: Message-Out phase\n"));
474 scp->phase = message_out;
475 outb(SET_ATN, port_base + CMD_REG); /* Reject the message */
476 outb(MSG_ACCEPT, port_base + CMD_REG);
477 break;
478
479 case 0x07: /* MESSAGE-IN */
480 VDEB(printk("SYM53C500: Message-In phase\n"));
481 scp->phase = message_in;
482
483 scp->status = inb(port_base + SCSI_FIFO);
484 scp->message = inb(port_base + SCSI_FIFO);
485
486 VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f));
487 DEB(printk("Status = %02x Message = %02x\n", scp->status, scp->message));
488
489 if (scp->message == SAVE_POINTERS || scp->message == DISCONNECT) {
490 outb(SET_ATN, port_base + CMD_REG); /* Reject message */
491 DEB(printk("Discarding SAVE_POINTERS message\n"));
492 }
493 outb(MSG_ACCEPT, port_base + CMD_REG);
494 break;
495 }
496 out:
497 spin_unlock_irqrestore(dev->host_lock, flags);
498 return IRQ_HANDLED;
499
500 idle_out:
501 scp->phase = idle;
502 scsi_done(curSC);
503 goto out;
504 }
505
506 static void
SYM53C500_release(struct pcmcia_device * link)507 SYM53C500_release(struct pcmcia_device *link)
508 {
509 struct scsi_info_t *info = link->priv;
510 struct Scsi_Host *shost = info->host;
511
512 dev_dbg(&link->dev, "SYM53C500_release\n");
513
514 /*
515 * Do this before releasing/freeing resources.
516 */
517 scsi_remove_host(shost);
518
519 /*
520 * Interrupts getting hosed on card removal. Try
521 * the following code, mostly from qlogicfas.c.
522 */
523 if (shost->irq)
524 free_irq(shost->irq, shost);
525 if (shost->io_port && shost->n_io_port)
526 release_region(shost->io_port, shost->n_io_port);
527
528 pcmcia_disable_device(link);
529
530 scsi_host_put(shost);
531 } /* SYM53C500_release */
532
533 static const char*
SYM53C500_info(struct Scsi_Host * SChost)534 SYM53C500_info(struct Scsi_Host *SChost)
535 {
536 static char info_msg[256];
537 struct sym53c500_data *data =
538 (struct sym53c500_data *)SChost->hostdata;
539
540 DEB(printk("SYM53C500_info called\n"));
541 (void)snprintf(info_msg, sizeof(info_msg),
542 "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.",
543 SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow");
544 return (info_msg);
545 }
546
SYM53C500_queue_lck(struct scsi_cmnd * SCpnt)547 static int SYM53C500_queue_lck(struct scsi_cmnd *SCpnt)
548 {
549 struct sym53c500_cmd_priv *scp = scsi_cmd_priv(SCpnt);
550 int i;
551 int port_base = SCpnt->device->host->io_port;
552 struct sym53c500_data *data =
553 (struct sym53c500_data *)SCpnt->device->host->hostdata;
554
555 VDEB(printk("SYM53C500_queue called\n"));
556
557 DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n",
558 SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id,
559 (u8)SCpnt->device->lun, scsi_bufflen(SCpnt)));
560
561 VDEB(for (i = 0; i < SCpnt->cmd_len; i++)
562 printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i]));
563 VDEB(printk("\n"));
564
565 data->current_SC = SCpnt;
566 scp->phase = command_ph;
567 scp->status = 0;
568 scp->message = 0;
569
570 /* We are locked here already by the mid layer */
571 REG0(port_base);
572 outb(scmd_id(SCpnt), port_base + DEST_ID); /* set destination */
573 outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */
574
575 for (i = 0; i < SCpnt->cmd_len; i++) {
576 outb(SCpnt->cmnd[i], port_base + SCSI_FIFO);
577 }
578 outb(SELECT_NO_ATN, port_base + CMD_REG);
579
580 return 0;
581 }
582
DEF_SCSI_QCMD(SYM53C500_queue)583 static DEF_SCSI_QCMD(SYM53C500_queue)
584
585 static int
586 SYM53C500_host_reset(struct scsi_cmnd *SCpnt)
587 {
588 int port_base = SCpnt->device->host->io_port;
589
590 DEB(printk("SYM53C500_host_reset called\n"));
591 spin_lock_irq(SCpnt->device->host->host_lock);
592 SYM53C500_int_host_reset(port_base);
593 spin_unlock_irq(SCpnt->device->host->host_lock);
594
595 return SUCCESS;
596 }
597
598 static int
SYM53C500_biosparm(struct scsi_device * disk,struct block_device * dev,sector_t capacity,int * info_array)599 SYM53C500_biosparm(struct scsi_device *disk,
600 struct block_device *dev,
601 sector_t capacity, int *info_array)
602 {
603 int size;
604
605 DEB(printk("SYM53C500_biosparm called\n"));
606
607 size = capacity;
608 info_array[0] = 64; /* heads */
609 info_array[1] = 32; /* sectors */
610 info_array[2] = size >> 11; /* cylinders */
611 if (info_array[2] > 1024) { /* big disk */
612 info_array[0] = 255;
613 info_array[1] = 63;
614 info_array[2] = size / (255 * 63);
615 }
616 return 0;
617 }
618
619 static ssize_t
SYM53C500_show_pio(struct device * dev,struct device_attribute * attr,char * buf)620 SYM53C500_show_pio(struct device *dev, struct device_attribute *attr,
621 char *buf)
622 {
623 struct Scsi_Host *SHp = class_to_shost(dev);
624 struct sym53c500_data *data =
625 (struct sym53c500_data *)SHp->hostdata;
626
627 return snprintf(buf, 4, "%d\n", data->fast_pio);
628 }
629
630 static ssize_t
SYM53C500_store_pio(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)631 SYM53C500_store_pio(struct device *dev, struct device_attribute *attr,
632 const char *buf, size_t count)
633 {
634 int pio;
635 struct Scsi_Host *SHp = class_to_shost(dev);
636 struct sym53c500_data *data =
637 (struct sym53c500_data *)SHp->hostdata;
638
639 pio = simple_strtoul(buf, NULL, 0);
640 if (pio == 0 || pio == 1) {
641 data->fast_pio = pio;
642 return count;
643 }
644 else
645 return -EINVAL;
646 }
647
648 /*
649 * SCSI HBA device attributes we want to
650 * make available via sysfs.
651 */
652 static struct device_attribute SYM53C500_pio_attr = {
653 .attr = {
654 .name = "fast_pio",
655 .mode = (S_IRUGO | S_IWUSR),
656 },
657 .show = SYM53C500_show_pio,
658 .store = SYM53C500_store_pio,
659 };
660
661 static struct attribute *SYM53C500_shost_attrs[] = {
662 &SYM53C500_pio_attr.attr,
663 NULL,
664 };
665
666 ATTRIBUTE_GROUPS(SYM53C500_shost);
667
668 /*
669 * scsi_host_template initializer
670 */
671 static const struct scsi_host_template sym53c500_driver_template = {
672 .module = THIS_MODULE,
673 .name = "SYM53C500",
674 .info = SYM53C500_info,
675 .queuecommand = SYM53C500_queue,
676 .eh_host_reset_handler = SYM53C500_host_reset,
677 .bios_param = SYM53C500_biosparm,
678 .proc_name = "SYM53C500",
679 .can_queue = 1,
680 .this_id = 7,
681 .sg_tablesize = 32,
682 .shost_groups = SYM53C500_shost_groups,
683 .cmd_size = sizeof(struct sym53c500_cmd_priv),
684 };
685
SYM53C500_config_check(struct pcmcia_device * p_dev,void * priv_data)686 static int SYM53C500_config_check(struct pcmcia_device *p_dev, void *priv_data)
687 {
688 p_dev->io_lines = 10;
689 p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
690 p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
691
692 if (p_dev->resource[0]->start == 0)
693 return -ENODEV;
694
695 return pcmcia_request_io(p_dev);
696 }
697
698 static int
SYM53C500_config(struct pcmcia_device * link)699 SYM53C500_config(struct pcmcia_device *link)
700 {
701 struct scsi_info_t *info = link->priv;
702 int ret;
703 int irq_level, port_base;
704 struct Scsi_Host *host;
705 const struct scsi_host_template *tpnt = &sym53c500_driver_template;
706 struct sym53c500_data *data;
707
708 dev_dbg(&link->dev, "SYM53C500_config\n");
709
710 info->manf_id = link->manf_id;
711
712 ret = pcmcia_loop_config(link, SYM53C500_config_check, NULL);
713 if (ret)
714 goto failed;
715
716 if (!link->irq)
717 goto failed;
718
719 ret = pcmcia_enable_device(link);
720 if (ret)
721 goto failed;
722
723 /*
724 * That's the trouble with copying liberally from another driver.
725 * Some things probably aren't relevant, and I suspect this entire
726 * section dealing with manufacturer IDs can be scrapped. --rct
727 */
728 if ((info->manf_id == MANFID_MACNICA) ||
729 (info->manf_id == MANFID_PIONEER) ||
730 (info->manf_id == 0x0098)) {
731 /* set ATAcmd */
732 outb(0xb4, link->resource[0]->start + 0xd);
733 outb(0x24, link->resource[0]->start + 0x9);
734 outb(0x04, link->resource[0]->start + 0xd);
735 }
736
737 /*
738 * irq_level == 0 implies tpnt->can_queue == 0, which
739 * is not supported in 2.6. Thus, only irq_level > 0
740 * will be allowed.
741 *
742 * Possible port_base values are as follows:
743 *
744 * 0x130, 0x230, 0x280, 0x290,
745 * 0x320, 0x330, 0x340, 0x350
746 */
747 port_base = link->resource[0]->start;
748 irq_level = link->irq;
749
750 DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n",
751 port_base, irq_level, USE_FAST_PIO);)
752
753 chip_init(port_base);
754
755 host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data));
756 if (!host) {
757 printk("SYM53C500: Unable to register host, giving up.\n");
758 goto err_release;
759 }
760
761 data = (struct sym53c500_data *)host->hostdata;
762
763 if (irq_level > 0) {
764 if (request_irq(irq_level, SYM53C500_intr, IRQF_SHARED, "SYM53C500", host)) {
765 printk("SYM53C500: unable to allocate IRQ %d\n", irq_level);
766 goto err_free_scsi;
767 }
768 DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level));
769 } else if (irq_level == 0) {
770 DEB(printk("SYM53C500: No interrupts detected\n"));
771 goto err_free_scsi;
772 } else {
773 DEB(printk("SYM53C500: Shouldn't get here!\n"));
774 goto err_free_scsi;
775 }
776
777 host->unique_id = port_base;
778 host->irq = irq_level;
779 host->io_port = port_base;
780 host->n_io_port = 0x10;
781 host->dma_channel = -1;
782
783 /*
784 * Note fast_pio is set to USE_FAST_PIO by
785 * default, but can be changed via "sysfs".
786 */
787 data->fast_pio = USE_FAST_PIO;
788
789 info->host = host;
790
791 if (scsi_add_host(host, NULL))
792 goto err_free_irq;
793
794 scsi_scan_host(host);
795
796 return 0;
797
798 err_free_irq:
799 free_irq(irq_level, host);
800 err_free_scsi:
801 scsi_host_put(host);
802 err_release:
803 release_region(port_base, 0x10);
804 printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n");
805 return -ENODEV;
806
807 failed:
808 SYM53C500_release(link);
809 return -ENODEV;
810 } /* SYM53C500_config */
811
sym53c500_resume(struct pcmcia_device * link)812 static int sym53c500_resume(struct pcmcia_device *link)
813 {
814 struct scsi_info_t *info = link->priv;
815
816 /* See earlier comment about manufacturer IDs. */
817 if ((info->manf_id == MANFID_MACNICA) ||
818 (info->manf_id == MANFID_PIONEER) ||
819 (info->manf_id == 0x0098)) {
820 outb(0x80, link->resource[0]->start + 0xd);
821 outb(0x24, link->resource[0]->start + 0x9);
822 outb(0x04, link->resource[0]->start + 0xd);
823 }
824 /*
825 * If things don't work after a "resume",
826 * this is a good place to start looking.
827 */
828 SYM53C500_int_host_reset(link->resource[0]->start);
829
830 return 0;
831 }
832
833 static void
SYM53C500_detach(struct pcmcia_device * link)834 SYM53C500_detach(struct pcmcia_device *link)
835 {
836 dev_dbg(&link->dev, "SYM53C500_detach\n");
837
838 SYM53C500_release(link);
839
840 kfree(link->priv);
841 link->priv = NULL;
842 } /* SYM53C500_detach */
843
844 static int
SYM53C500_probe(struct pcmcia_device * link)845 SYM53C500_probe(struct pcmcia_device *link)
846 {
847 struct scsi_info_t *info;
848
849 dev_dbg(&link->dev, "SYM53C500_attach()\n");
850
851 /* Create new SCSI device */
852 info = kzalloc(sizeof(*info), GFP_KERNEL);
853 if (!info)
854 return -ENOMEM;
855 info->p_dev = link;
856 link->priv = info;
857 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
858
859 return SYM53C500_config(link);
860 } /* SYM53C500_attach */
861
862 MODULE_AUTHOR("Bob Tracy <rct@frus.com>");
863 MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver");
864 MODULE_LICENSE("GPL");
865
866 static const struct pcmcia_device_id sym53c500_ids[] = {
867 PCMCIA_DEVICE_PROD_ID12("BASICS by New Media Corporation", "SCSI Sym53C500", 0x23c78a9d, 0x0099e7f7),
868 PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "SCSI Bus Toaster Sym53C500", 0x085a850b, 0x45432eb8),
869 PCMCIA_DEVICE_PROD_ID2("SCSI9000", 0x21648f44),
870 PCMCIA_DEVICE_NULL,
871 };
872 MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids);
873
874 static struct pcmcia_driver sym53c500_cs_driver = {
875 .owner = THIS_MODULE,
876 .name = "sym53c500_cs",
877 .probe = SYM53C500_probe,
878 .remove = SYM53C500_detach,
879 .id_table = sym53c500_ids,
880 .resume = sym53c500_resume,
881 };
882 module_pcmcia_driver(sym53c500_cs_driver);
883