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sym53c500_cs.c
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1 /*
2 * sym53c500_cs.c Bob Tracy ([email protected])
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 ([email protected])
13 * Original by Tom Corner ([email protected]).
14 * Adapted from NCR53c406a.h which is Copyrighted (C) 1994
15 * Normunds Saumanis ([email protected])
16 *
17 * SYM53C500.c
18 * Bob Tracy ([email protected])
19 * Original driver by Tom Corner ([email protected]) was adapted
20 * from NCR53c406a.c which is Copyrighted (C) 1994, 1995, 1996
21 * Normunds Saumanis ([email protected])
22 *
23 * sym53c500.c
24 * Bob Tracy ([email protected])
25 * Original by Tom Corner ([email protected]) was adapted from a
26 * driver for the Qlogic SCSI card written by
27 * David Hinds ([email protected]).
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/cistpl.h>
75 #include <pcmcia/ds.h>
76 #include <pcmcia/ciscode.h>
77 
78 
79 /* ================================================================== */
80 
81 #define SYNC_MODE 0 /* Synchronous transfer mode */
82 
83 /* Default configuration */
84 #define C1_IMG 0x07 /* ID=7 */
85 #define C2_IMG 0x48 /* FE SCSI2 */
86 #define C3_IMG 0x20 /* CDB */
87 #define C4_IMG 0x04 /* ANE */
88 #define C5_IMG 0xa4 /* ? changed from b6= AA PI SIE POL */
89 #define C7_IMG 0x80 /* added for SYM53C500 t. corner */
90 
91 /* Hardware Registers: offsets from io_port (base) */
92 
93 /* Control Register Set 0 */
94 #define TC_LSB 0x00 /* transfer counter lsb */
95 #define TC_MSB 0x01 /* transfer counter msb */
96 #define SCSI_FIFO 0x02 /* scsi fifo register */
97 #define CMD_REG 0x03 /* command register */
98 #define STAT_REG 0x04 /* status register */
99 #define DEST_ID 0x04 /* selection/reselection bus id */
100 #define INT_REG 0x05 /* interrupt status register */
101 #define SRTIMOUT 0x05 /* select/reselect timeout reg */
102 #define SEQ_REG 0x06 /* sequence step register */
103 #define SYNCPRD 0x06 /* synchronous transfer period */
104 #define FIFO_FLAGS 0x07 /* indicates # of bytes in fifo */
105 #define SYNCOFF 0x07 /* synchronous offset register */
106 #define CONFIG1 0x08 /* configuration register */
107 #define CLKCONV 0x09 /* clock conversion register */
108 /* #define TESTREG 0x0A */ /* test mode register */
109 #define CONFIG2 0x0B /* configuration 2 register */
110 #define CONFIG3 0x0C /* configuration 3 register */
111 #define CONFIG4 0x0D /* configuration 4 register */
112 #define TC_HIGH 0x0E /* transfer counter high */
113 /* #define FIFO_BOTTOM 0x0F */ /* reserve FIFO byte register */
114 
115 /* Control Register Set 1 */
116 /* #define JUMPER_SENSE 0x00 */ /* jumper sense port reg (r/w) */
117 /* #define SRAM_PTR 0x01 */ /* SRAM address pointer reg (r/w) */
118 /* #define SRAM_DATA 0x02 */ /* SRAM data register (r/w) */
119 #define PIO_FIFO 0x04 /* PIO FIFO registers (r/w) */
120 /* #define PIO_FIFO1 0x05 */ /* */
121 /* #define PIO_FIFO2 0x06 */ /* */
122 /* #define PIO_FIFO3 0x07 */ /* */
123 #define PIO_STATUS 0x08 /* PIO status (r/w) */
124 /* #define ATA_CMD 0x09 */ /* ATA command/status reg (r/w) */
125 /* #define ATA_ERR 0x0A */ /* ATA features/error reg (r/w) */
126 #define PIO_FLAG 0x0B /* PIO flag interrupt enable (r/w) */
127 #define CONFIG5 0x09 /* configuration 5 register */
128 /* #define SIGNATURE 0x0E */ /* signature register (r) */
129 /* #define CONFIG6 0x0F */ /* configuration 6 register (r) */
130 #define CONFIG7 0x0d
131 
132 /* select register set 0 */
133 #define REG0(x) (outb(C4_IMG, (x) + CONFIG4))
134 /* select register set 1 */
135 #define REG1(x) outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5)
136 
137 #if SYM53C500_DEBUG
138 #define DEB(x) x
139 #else
140 #define DEB(x)
141 #endif
142 
143 #if VERBOSE_SYM53C500_DEBUG
144 #define VDEB(x) x
145 #else
146 #define VDEB(x)
147 #endif
148 
149 #define LOAD_DMA_COUNT(x, count) \
150  outb(count & 0xff, (x) + TC_LSB); \
151  outb((count >> 8) & 0xff, (x) + TC_MSB); \
152  outb((count >> 16) & 0xff, (x) + TC_HIGH);
153 
154 /* Chip commands */
155 #define DMA_OP 0x80
156 
157 #define SCSI_NOP 0x00
158 #define FLUSH_FIFO 0x01
159 #define CHIP_RESET 0x02
160 #define SCSI_RESET 0x03
161 #define RESELECT 0x40
162 #define SELECT_NO_ATN 0x41
163 #define SELECT_ATN 0x42
164 #define SELECT_ATN_STOP 0x43
165 #define ENABLE_SEL 0x44
166 #define DISABLE_SEL 0x45
167 #define SELECT_ATN3 0x46
168 #define RESELECT3 0x47
169 #define TRANSFER_INFO 0x10
170 #define INIT_CMD_COMPLETE 0x11
171 #define MSG_ACCEPT 0x12
172 #define TRANSFER_PAD 0x18
173 #define SET_ATN 0x1a
174 #define RESET_ATN 0x1b
175 #define SEND_MSG 0x20
176 #define SEND_STATUS 0x21
177 #define SEND_DATA 0x22
178 #define DISCONN_SEQ 0x23
179 #define TERMINATE_SEQ 0x24
180 #define TARG_CMD_COMPLETE 0x25
181 #define DISCONN 0x27
182 #define RECV_MSG 0x28
183 #define RECV_CMD 0x29
184 #define RECV_DATA 0x2a
185 #define RECV_CMD_SEQ 0x2b
186 #define TARGET_ABORT_DMA 0x04
187 
188 /* ================================================================== */
189 
190 struct scsi_info_t {
191  struct pcmcia_device *p_dev;
192  struct Scsi_Host *host;
193  unsigned short manf_id;
194 };
195 
196 /*
197 * Repository for per-instance host data.
198 */
199 struct sym53c500_data {
200  struct scsi_cmnd *current_SC;
201  int fast_pio;
202 };
203 
204 enum Phase {
205  idle,
206  data_out,
207  data_in,
208  command_ph,
209  status_ph,
210  message_out,
211  message_in
212 };
213 
214 /* ================================================================== */
215 
216 static void
217 chip_init(int io_port)
218 {
219  REG1(io_port);
220  outb(0x01, io_port + PIO_STATUS);
221  outb(0x00, io_port + PIO_FLAG);
222 
223  outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
224  outb(C3_IMG, io_port + CONFIG3);
225  outb(C2_IMG, io_port + CONFIG2);
226  outb(C1_IMG, io_port + CONFIG1);
227 
228  outb(0x05, io_port + CLKCONV); /* clock conversion factor */
229  outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */
230  outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */
231  outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */
232 }
233 
234 static void
235 SYM53C500_int_host_reset(int io_port)
236 {
237  outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */
238  outb(CHIP_RESET, io_port + CMD_REG);
239  outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */
240  outb(SCSI_RESET, io_port + CMD_REG);
241  chip_init(io_port);
242 }
243 
244 static __inline__ int
245 SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
246 {
247  int i;
248  int len; /* current scsi fifo size */
249 
250  REG1(base);
251  while (reqlen) {
252  i = inb(base + PIO_STATUS);
253  /* VDEB(printk("pio_status=%x\n", i)); */
254  if (i & 0x80)
255  return 0;
256 
257  switch (i & 0x1e) {
258  default:
259  case 0x10: /* fifo empty */
260  len = 0;
261  break;
262  case 0x0:
263  len = 1;
264  break;
265  case 0x8: /* fifo 1/3 full */
266  len = 42;
267  break;
268  case 0xc: /* fifo 2/3 full */
269  len = 84;
270  break;
271  case 0xe: /* fifo full */
272  len = 128;
273  break;
274  }
275 
276  if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */
277  return 0;
278  }
279 
280  if (len) {
281  if (len > reqlen)
282  len = reqlen;
283 
284  if (fast_pio && len > 3) {
285  insl(base + PIO_FIFO, request, len >> 2);
286  request += len & 0xfc;
287  reqlen -= len & 0xfc;
288  } else {
289  while (len--) {
290  *request++ = inb(base + PIO_FIFO);
291  reqlen--;
292  }
293  }
294  }
295  }
296  return 0;
297 }
298 
299 static __inline__ int
300 SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
301 {
302  int i = 0;
303  int len; /* current scsi fifo size */
304 
305  REG1(base);
306  while (reqlen && !(i & 0x40)) {
307  i = inb(base + PIO_STATUS);
308  /* VDEB(printk("pio_status=%x\n", i)); */
309  if (i & 0x80) /* error */
310  return 0;
311 
312  switch (i & 0x1e) {
313  case 0x10:
314  len = 128;
315  break;
316  case 0x0:
317  len = 84;
318  break;
319  case 0x8:
320  len = 42;
321  break;
322  case 0xc:
323  len = 1;
324  break;
325  default:
326  case 0xe:
327  len = 0;
328  break;
329  }
330 
331  if (len) {
332  if (len > reqlen)
333  len = reqlen;
334 
335  if (fast_pio && len > 3) {
336  outsl(base + PIO_FIFO, request, len >> 2);
337  request += len & 0xfc;
338  reqlen -= len & 0xfc;
339  } else {
340  while (len--) {
341  outb(*request++, base + PIO_FIFO);
342  reqlen--;
343  }
344  }
345  }
346  }
347  return 0;
348 }
349 
350 static irqreturn_t
351 SYM53C500_intr(int irq, void *dev_id)
352 {
353  unsigned long flags;
354  struct Scsi_Host *dev = dev_id;
355  DEB(unsigned char fifo_size;)
356  DEB(unsigned char seq_reg;)
357  unsigned char status, int_reg;
358  unsigned char pio_status;
359  int port_base = dev->io_port;
360  struct sym53c500_data *data =
361  (struct sym53c500_data *)dev->hostdata;
362  struct scsi_cmnd *curSC = data->current_SC;
363  int fast_pio = data->fast_pio;
364 
365  spin_lock_irqsave(dev->host_lock, flags);
366 
367  VDEB(printk("SYM53C500_intr called\n"));
368 
369  REG1(port_base);
370  pio_status = inb(port_base + PIO_STATUS);
371  REG0(port_base);
372  status = inb(port_base + STAT_REG);
373  DEB(seq_reg = inb(port_base + SEQ_REG));
374  int_reg = inb(port_base + INT_REG);
375  DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f);
376 
377 #if SYM53C500_DEBUG
378  printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x",
379  status, seq_reg, int_reg, fifo_size);
380  printk(", pio=%02x\n", pio_status);
381 #endif /* SYM53C500_DEBUG */
382 
383  if (int_reg & 0x80) { /* SCSI reset intr */
384  DEB(printk("SYM53C500: reset intr received\n"));
385  curSC->result = DID_RESET << 16;
386  goto idle_out;
387  }
388 
389  if (pio_status & 0x80) {
390  printk("SYM53C500: Warning: PIO error!\n");
391  curSC->result = DID_ERROR << 16;
392  goto idle_out;
393  }
394 
395  if (status & 0x20) { /* Parity error */
396  printk("SYM53C500: Warning: parity error!\n");
397  curSC->result = DID_PARITY << 16;
398  goto idle_out;
399  }
400 
401  if (status & 0x40) { /* Gross error */
402  printk("SYM53C500: Warning: gross error!\n");
403  curSC->result = DID_ERROR << 16;
404  goto idle_out;
405  }
406 
407  if (int_reg & 0x20) { /* Disconnect */
408  DEB(printk("SYM53C500: disconnect intr received\n"));
409  if (curSC->SCp.phase != message_in) { /* Unexpected disconnect */
410  curSC->result = DID_NO_CONNECT << 16;
411  } else { /* Command complete, return status and message */
412  curSC->result = (curSC->SCp.Status & 0xff)
413  | ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16);
414  }
415  goto idle_out;
416  }
417 
418  switch (status & 0x07) { /* scsi phase */
419  case 0x00: /* DATA-OUT */
420  if (int_reg & 0x10) { /* Target requesting info transfer */
421  struct scatterlist *sg;
422  int i;
423 
424  curSC->SCp.phase = data_out;
425  VDEB(printk("SYM53C500: Data-Out phase\n"));
426  outb(FLUSH_FIFO, port_base + CMD_REG);
427  LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */
428  outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
429 
430  scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {
431  SYM53C500_pio_write(fast_pio, port_base,
432  sg_virt(sg), sg->length);
433  }
434  REG0(port_base);
435  }
436  break;
437 
438  case 0x01: /* DATA-IN */
439  if (int_reg & 0x10) { /* Target requesting info transfer */
440  struct scatterlist *sg;
441  int i;
442 
443  curSC->SCp.phase = data_in;
444  VDEB(printk("SYM53C500: Data-In phase\n"));
445  outb(FLUSH_FIFO, port_base + CMD_REG);
446  LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */
447  outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
448 
449  scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {
450  SYM53C500_pio_read(fast_pio, port_base,
451  sg_virt(sg), sg->length);
452  }
453  REG0(port_base);
454  }
455  break;
456 
457  case 0x02: /* COMMAND */
458  curSC->SCp.phase = command_ph;
459  printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n");
460  break;
461 
462  case 0x03: /* STATUS */
463  curSC->SCp.phase = status_ph;
464  VDEB(printk("SYM53C500: Status phase\n"));
465  outb(FLUSH_FIFO, port_base + CMD_REG);
466  outb(INIT_CMD_COMPLETE, port_base + CMD_REG);
467  break;
468 
469  case 0x04: /* Reserved */
470  case 0x05: /* Reserved */
471  printk("SYM53C500: WARNING: Reserved phase!!!\n");
472  break;
473 
474  case 0x06: /* MESSAGE-OUT */
475  DEB(printk("SYM53C500: Message-Out phase\n"));
476  curSC->SCp.phase = message_out;
477  outb(SET_ATN, port_base + CMD_REG); /* Reject the message */
478  outb(MSG_ACCEPT, port_base + CMD_REG);
479  break;
480 
481  case 0x07: /* MESSAGE-IN */
482  VDEB(printk("SYM53C500: Message-In phase\n"));
483  curSC->SCp.phase = message_in;
484 
485  curSC->SCp.Status = inb(port_base + SCSI_FIFO);
486  curSC->SCp.Message = inb(port_base + SCSI_FIFO);
487 
488  VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f));
489  DEB(printk("Status = %02x Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message));
490 
491  if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) {
492  outb(SET_ATN, port_base + CMD_REG); /* Reject message */
493  DEB(printk("Discarding SAVE_POINTERS message\n"));
494  }
495  outb(MSG_ACCEPT, port_base + CMD_REG);
496  break;
497  }
498 out:
499  spin_unlock_irqrestore(dev->host_lock, flags);
500  return IRQ_HANDLED;
501 
502 idle_out:
503  curSC->SCp.phase = idle;
504  curSC->scsi_done(curSC);
505  goto out;
506 }
507 
508 static void
509 SYM53C500_release(struct pcmcia_device *link)
510 {
511  struct scsi_info_t *info = link->priv;
512  struct Scsi_Host *shost = info->host;
513 
514  dev_dbg(&link->dev, "SYM53C500_release\n");
515 
516  /*
517  * Do this before releasing/freeing resources.
518  */
519  scsi_remove_host(shost);
520 
521  /*
522  * Interrupts getting hosed on card removal. Try
523  * the following code, mostly from qlogicfas.c.
524  */
525  if (shost->irq)
526  free_irq(shost->irq, shost);
527  if (shost->io_port && shost->n_io_port)
528  release_region(shost->io_port, shost->n_io_port);
529 
530  pcmcia_disable_device(link);
531 
532  scsi_host_put(shost);
533 } /* SYM53C500_release */
534 
535 static const char*
536 SYM53C500_info(struct Scsi_Host *SChost)
537 {
538  static char info_msg[256];
539  struct sym53c500_data *data =
540  (struct sym53c500_data *)SChost->hostdata;
541 
542  DEB(printk("SYM53C500_info called\n"));
543  (void)snprintf(info_msg, sizeof(info_msg),
544  "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.",
545  SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow");
546  return (info_msg);
547 }
548 
549 static int
550 SYM53C500_queue_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
551 {
552  int i;
553  int port_base = SCpnt->device->host->io_port;
554  struct sym53c500_data *data =
555  (struct sym53c500_data *)SCpnt->device->host->hostdata;
556 
557  VDEB(printk("SYM53C500_queue called\n"));
558 
559  DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n",
560  SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id,
561  SCpnt->device->lun, scsi_bufflen(SCpnt)));
562 
563  VDEB(for (i = 0; i < SCpnt->cmd_len; i++)
564  printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i]));
565  VDEB(printk("\n"));
566 
567  data->current_SC = SCpnt;
568  data->current_SC->scsi_done = done;
569  data->current_SC->SCp.phase = command_ph;
570  data->current_SC->SCp.Status = 0;
571  data->current_SC->SCp.Message = 0;
572 
573  /* We are locked here already by the mid layer */
574  REG0(port_base);
575  outb(scmd_id(SCpnt), port_base + DEST_ID); /* set destination */
576  outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */
577 
578  for (i = 0; i < SCpnt->cmd_len; i++) {
579  outb(SCpnt->cmnd[i], port_base + SCSI_FIFO);
580  }
581  outb(SELECT_NO_ATN, port_base + CMD_REG);
582 
583  return 0;
584 }
585 
586 static DEF_SCSI_QCMD(SYM53C500_queue)
587 
588 static int
589 SYM53C500_host_reset(struct scsi_cmnd *SCpnt)
590 {
591  int port_base = SCpnt->device->host->io_port;
592 
593  DEB(printk("SYM53C500_host_reset called\n"));
594  spin_lock_irq(SCpnt->device->host->host_lock);
595  SYM53C500_int_host_reset(port_base);
596  spin_unlock_irq(SCpnt->device->host->host_lock);
597 
598  return SUCCESS;
599 }
600 
601 static int
602 SYM53C500_biosparm(struct scsi_device *disk,
603  struct block_device *dev,
604  sector_t capacity, int *info_array)
605 {
606  int size;
607 
608  DEB(printk("SYM53C500_biosparm called\n"));
609 
610  size = capacity;
611  info_array[0] = 64; /* heads */
612  info_array[1] = 32; /* sectors */
613  info_array[2] = size >> 11; /* cylinders */
614  if (info_array[2] > 1024) { /* big disk */
615  info_array[0] = 255;
616  info_array[1] = 63;
617  info_array[2] = size / (255 * 63);
618  }
619  return 0;
620 }
621 
622 static ssize_t
623 SYM53C500_show_pio(struct device *dev, struct device_attribute *attr,
624  char *buf)
625 {
626  struct Scsi_Host *SHp = class_to_shost(dev);
627  struct sym53c500_data *data =
628  (struct sym53c500_data *)SHp->hostdata;
629 
630  return snprintf(buf, 4, "%d\n", data->fast_pio);
631 }
632 
633 static ssize_t
634 SYM53C500_store_pio(struct device *dev, struct device_attribute *attr,
635  const char *buf, size_t count)
636 {
637  int pio;
638  struct Scsi_Host *SHp = class_to_shost(dev);
639  struct sym53c500_data *data =
640  (struct sym53c500_data *)SHp->hostdata;
641 
642  pio = simple_strtoul(buf, NULL, 0);
643  if (pio == 0 || pio == 1) {
644  data->fast_pio = pio;
645  return count;
646  }
647  else
648  return -EINVAL;
649 }
650 
651 /*
652 * SCSI HBA device attributes we want to
653 * make available via sysfs.
654 */
655 static struct device_attribute SYM53C500_pio_attr = {
656  .attr = {
657  .name = "fast_pio",
658  .mode = (S_IRUGO | S_IWUSR),
659  },
660  .show = SYM53C500_show_pio,
661  .store = SYM53C500_store_pio,
662 };
663 
664 static struct device_attribute *SYM53C500_shost_attrs[] = {
665  &SYM53C500_pio_attr,
666  NULL,
667 };
668 
669 /*
670 * scsi_host_template initializer
671 */
672 static struct scsi_host_template sym53c500_driver_template = {
673  .module = THIS_MODULE,
674  .name = "SYM53C500",
675  .info = SYM53C500_info,
676  .queuecommand = SYM53C500_queue,
677  .eh_host_reset_handler = SYM53C500_host_reset,
678  .bios_param = SYM53C500_biosparm,
679  .proc_name = "SYM53C500",
680  .can_queue = 1,
681  .this_id = 7,
682  .sg_tablesize = 32,
683  .cmd_per_lun = 1,
684  .use_clustering = ENABLE_CLUSTERING,
685  .shost_attrs = SYM53C500_shost_attrs
686 };
687 
688 static int SYM53C500_config_check(struct pcmcia_device *p_dev, void *priv_data)
689 {
690  p_dev->io_lines = 10;
691  p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
692  p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
693 
694  if (p_dev->resource[0]->start == 0)
695  return -ENODEV;
696 
697  return pcmcia_request_io(p_dev);
698 }
699 
700 static int
701 SYM53C500_config(struct pcmcia_device *link)
702 {
703  struct scsi_info_t *info = link->priv;
704  int ret;
705  int irq_level, port_base;
706  struct Scsi_Host *host;
707  struct scsi_host_template *tpnt = &sym53c500_driver_template;
708  struct sym53c500_data *data;
709 
710  dev_dbg(&link->dev, "SYM53C500_config\n");
711 
712  info->manf_id = link->manf_id;
713 
714  ret = pcmcia_loop_config(link, SYM53C500_config_check, NULL);
715  if (ret)
716  goto failed;
717 
718  if (!link->irq)
719  goto failed;
720 
721  ret = pcmcia_enable_device(link);
722  if (ret)
723  goto failed;
724 
725  /*
726  * That's the trouble with copying liberally from another driver.
727  * Some things probably aren't relevant, and I suspect this entire
728  * section dealing with manufacturer IDs can be scrapped. --rct
729  */
730  if ((info->manf_id == MANFID_MACNICA) ||
731  (info->manf_id == MANFID_PIONEER) ||
732  (info->manf_id == 0x0098)) {
733  /* set ATAcmd */
734  outb(0xb4, link->resource[0]->start + 0xd);
735  outb(0x24, link->resource[0]->start + 0x9);
736  outb(0x04, link->resource[0]->start + 0xd);
737  }
738 
739  /*
740  * irq_level == 0 implies tpnt->can_queue == 0, which
741  * is not supported in 2.6. Thus, only irq_level > 0
742  * will be allowed.
743  *
744  * Possible port_base values are as follows:
745  *
746  * 0x130, 0x230, 0x280, 0x290,
747  * 0x320, 0x330, 0x340, 0x350
748  */
749  port_base = link->resource[0]->start;
750  irq_level = link->irq;
751 
752  DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n",
753  port_base, irq_level, USE_FAST_PIO);)
754 
755  chip_init(port_base);
756 
757  host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data));
758  if (!host) {
759  printk("SYM53C500: Unable to register host, giving up.\n");
760  goto err_release;
761  }
762 
763  data = (struct sym53c500_data *)host->hostdata;
764 
765  if (irq_level > 0) {
766  if (request_irq(irq_level, SYM53C500_intr, IRQF_SHARED, "SYM53C500", host)) {
767  printk("SYM53C500: unable to allocate IRQ %d\n", irq_level);
768  goto err_free_scsi;
769  }
770  DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level));
771  } else if (irq_level == 0) {
772  DEB(printk("SYM53C500: No interrupts detected\n"));
773  goto err_free_scsi;
774  } else {
775  DEB(printk("SYM53C500: Shouldn't get here!\n"));
776  goto err_free_scsi;
777  }
778 
779  host->unique_id = port_base;
780  host->irq = irq_level;
781  host->io_port = port_base;
782  host->n_io_port = 0x10;
783  host->dma_channel = -1;
784 
785  /*
786  * Note fast_pio is set to USE_FAST_PIO by
787  * default, but can be changed via "sysfs".
788  */
789  data->fast_pio = USE_FAST_PIO;
790 
791  info->host = host;
792 
793  if (scsi_add_host(host, NULL))
794  goto err_free_irq;
795 
796  scsi_scan_host(host);
797 
798  return 0;
799 
800 err_free_irq:
801  free_irq(irq_level, host);
802 err_free_scsi:
803  scsi_host_put(host);
804 err_release:
805  release_region(port_base, 0x10);
806  printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n");
807  return -ENODEV;
808 
809 failed:
810  SYM53C500_release(link);
811  return -ENODEV;
812 } /* SYM53C500_config */
813 
814 static int sym53c500_resume(struct pcmcia_device *link)
815 {
816  struct scsi_info_t *info = link->priv;
817 
818  /* See earlier comment about manufacturer IDs. */
819  if ((info->manf_id == MANFID_MACNICA) ||
820  (info->manf_id == MANFID_PIONEER) ||
821  (info->manf_id == 0x0098)) {
822  outb(0x80, link->resource[0]->start + 0xd);
823  outb(0x24, link->resource[0]->start + 0x9);
824  outb(0x04, link->resource[0]->start + 0xd);
825  }
826  /*
827  * If things don't work after a "resume",
828  * this is a good place to start looking.
829  */
830  SYM53C500_int_host_reset(link->resource[0]->start);
831 
832  return 0;
833 }
834 
835 static void
836 SYM53C500_detach(struct pcmcia_device *link)
837 {
838  dev_dbg(&link->dev, "SYM53C500_detach\n");
839 
840  SYM53C500_release(link);
841 
842  kfree(link->priv);
843  link->priv = NULL;
844 } /* SYM53C500_detach */
845 
846 static int
847 SYM53C500_probe(struct pcmcia_device *link)
848 {
849  struct scsi_info_t *info;
850 
851  dev_dbg(&link->dev, "SYM53C500_attach()\n");
852 
853  /* Create new SCSI device */
854  info = kzalloc(sizeof(*info), GFP_KERNEL);
855  if (!info)
856  return -ENOMEM;
857  info->p_dev = link;
858  link->priv = info;
859  link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
860 
861  return SYM53C500_config(link);
862 } /* SYM53C500_attach */
863 
864 MODULE_AUTHOR("Bob Tracy <[email protected]>");
865 MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver");
866 MODULE_LICENSE("GPL");
867 
868 static const struct pcmcia_device_id sym53c500_ids[] = {
869  PCMCIA_DEVICE_PROD_ID12("BASICS by New Media Corporation", "SCSI Sym53C500", 0x23c78a9d, 0x0099e7f7),
870  PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "SCSI Bus Toaster Sym53C500", 0x085a850b, 0x45432eb8),
871  PCMCIA_DEVICE_PROD_ID2("SCSI9000", 0x21648f44),
872  PCMCIA_DEVICE_NULL,
873 };
874 MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids);
875 
876 static struct pcmcia_driver sym53c500_cs_driver = {
877  .owner = THIS_MODULE,
878  .name = "sym53c500_cs",
879  .probe = SYM53C500_probe,
880  .remove = SYM53C500_detach,
881  .id_table = sym53c500_ids,
882  .resume = sym53c500_resume,
883 };
884 
885 static int __init
886 init_sym53c500_cs(void)
887 {
888  return pcmcia_register_driver(&sym53c500_cs_driver);
889 }
890 
891 static void __exit
892 exit_sym53c500_cs(void)
893 {
894  pcmcia_unregister_driver(&sym53c500_cs_driver);
895 }
896 
897 module_init(init_sym53c500_cs);
898 module_exit(exit_sym53c500_cs);
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