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fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / drivers / scsi / sym53c416.c
blob8befab7e98397b759c9c3a80989b5f4edb5f42ee
1 /*
2 * sym53c416.c
3 * Low-level SCSI driver for sym53c416 chip.
4 * Copyright (C) 1998 Lieven Willems (lw_linux@hotmail.com)
5 *
6 * Changes :
7 *
8 * Marcelo Tosatti <marcelo@conectiva.com.br> : Added io_request_lock locking
9 * Alan Cox <alan@redhat.com> : Cleaned up code formatting
10 * Fixed an irq locking bug
11 * Added ISAPnP support
12 * Bjoern A. Zeeb <bzeeb@zabbadoz.net> : Initial irq locking updates
13 * Added another card with ISAPnP support
14 *
15 * LILO command line usage: sym53c416=<PORTBASE>[,<IRQ>]
16 *
17 * This program is free software; you can redistribute it and/or modify it
18 * under the terms of the GNU General Public License as published by the
19 * Free Software Foundation; either version 2, or (at your option) any
20 * later version.
21 *
22 * This program is distributed in the hope that it will be useful, but
23 * WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
25 * General Public License for more details.
26 *
27 */
28
29 #include <linux/module.h>
30 #include <linux/kernel.h>
31 #include <linux/types.h>
32 #include <linux/init.h>
33 #include <linux/string.h>
34 #include <linux/ioport.h>
35 #include <linux/interrupt.h>
36 #include <linux/delay.h>
37 #include <linux/proc_fs.h>
38 #include <linux/spinlock.h>
39 #include <asm/dma.h>
40 #include <asm/system.h>
41 #include <asm/io.h>
42 #include <linux/blkdev.h>
43 #include <linux/isapnp.h>
44 #include "scsi.h"
45 #include <scsi/scsi_host.h>
46 #include "sym53c416.h"
47
48 #define VERSION_STRING "Version 1.0.0-ac"
49
50 #define TC_LOW 0x00 /* Transfer counter low */
51 #define TC_MID 0x01 /* Transfer counter mid */
52 #define SCSI_FIFO 0x02 /* SCSI FIFO register */
53 #define COMMAND_REG 0x03 /* Command Register */
54 #define STATUS_REG 0x04 /* Status Register (READ) */
55 #define DEST_BUS_ID 0x04 /* Destination Bus ID (WRITE) */
56 #define INT_REG 0x05 /* Interrupt Register (READ) */
57 #define TOM 0x05 /* Time out multiplier (WRITE) */
58 #define STP 0x06 /* Synchronous Transfer period */
59 #define SYNC_OFFSET 0x07 /* Synchronous Offset */
60 #define CONF_REG_1 0x08 /* Configuration register 1 */
61 #define CONF_REG_2 0x0B /* Configuration register 2 */
62 #define CONF_REG_3 0x0C /* Configuration register 3 */
63 #define CONF_REG_4 0x0D /* Configuration register 4 */
64 #define TC_HIGH 0x0E /* Transfer counter high */
65 #define PIO_FIFO_1 0x10 /* PIO FIFO register 1 */
66 #define PIO_FIFO_2 0x11 /* PIO FIFO register 2 */
67 #define PIO_FIFO_3 0x12 /* PIO FIFO register 3 */
68 #define PIO_FIFO_4 0x13 /* PIO FIFO register 4 */
69 #define PIO_FIFO_CNT 0x14 /* PIO FIFO count */
70 #define PIO_INT_REG 0x15 /* PIO interrupt register */
71 #define CONF_REG_5 0x16 /* Configuration register 5 */
72 #define FEATURE_EN 0x1D /* Feature Enable register */
73
74 /* Configuration register 1 entries: */
75 /* Bits 2-0: SCSI ID of host adapter */
76 #define SCM 0x80 /* Slow Cable Mode */
77 #define SRID 0x40 /* SCSI Reset Interrupt Disable */
78 #define PTM 0x20 /* Parity Test Mode */
79 #define EPC 0x10 /* Enable Parity Checking */
80 #define CTME 0x08 /* Special Test Mode */
81
82 /* Configuration register 2 entries: */
83 #define FE 0x40 /* Features Enable */
84 #define SCSI2 0x08 /* SCSI 2 Enable */
85 #define TBPA 0x04 /* Target Bad Parity Abort */
86
87 /* Configuration register 3 entries: */
88 #define IDMRC 0x80 /* ID Message Reserved Check */
89 #define QTE 0x40 /* Queue Tag Enable */
90 #define CDB10 0x20 /* Command Descriptor Block 10 */
91 #define FSCSI 0x10 /* FastSCSI */
92 #define FCLK 0x08 /* FastClock */
93
94 /* Configuration register 4 entries: */
95 #define RBS 0x08 /* Register bank select */
96 #define EAN 0x04 /* Enable Active Negotiation */
97
98 /* Configuration register 5 entries: */
99 #define LPSR 0x80 /* Lower Power SCSI Reset */
100 #define IE 0x20 /* Interrupt Enable */
101 #define LPM 0x02 /* Low Power Mode */
102 #define WSE0 0x01 /* 0WS Enable */
103
104 /* Interrupt register entries: */
105 #define SRST 0x80 /* SCSI Reset */
106 #define ILCMD 0x40 /* Illegal Command */
107 #define DIS 0x20 /* Disconnect */
108 #define BS 0x10 /* Bus Service */
109 #define FC 0x08 /* Function Complete */
110 #define RESEL 0x04 /* Reselected */
111 #define SI 0x03 /* Selection Interrupt */
112
113 /* Status Register Entries: */
114 #define SCI 0x80 /* SCSI Core Int */
115 #define GE 0x40 /* Gross Error */
116 #define PE 0x20 /* Parity Error */
117 #define TC 0x10 /* Terminal Count */
118 #define VGC 0x08 /* Valid Group Code */
119 #define PHBITS 0x07 /* Phase bits */
120
121 /* PIO Interrupt Register Entries: */
122 #define SCI 0x80 /* SCSI Core Int */
123 #define PFI 0x40 /* PIO FIFO Interrupt */
124 #define FULL 0x20 /* PIO FIFO Full */
125 #define EMPTY 0x10 /* PIO FIFO Empty */
126 #define CE 0x08 /* Collision Error */
127 #define OUE 0x04 /* Overflow / Underflow error */
128 #define FIE 0x02 /* Full Interrupt Enable */
129 #define EIE 0x01 /* Empty Interrupt Enable */
130
131 /* SYM53C416 SCSI phases (lower 3 bits of SYM53C416_STATUS_REG) */
132 #define PHASE_DATA_OUT 0x00
133 #define PHASE_DATA_IN 0x01
134 #define PHASE_COMMAND 0x02
135 #define PHASE_STATUS 0x03
136 #define PHASE_RESERVED_1 0x04
137 #define PHASE_RESERVED_2 0x05
138 #define PHASE_MESSAGE_OUT 0x06
139 #define PHASE_MESSAGE_IN 0x07
140
141 /* SYM53C416 core commands */
142 #define NOOP 0x00
143 #define FLUSH_FIFO 0x01
144 #define RESET_CHIP 0x02
145 #define RESET_SCSI_BUS 0x03
146 #define DISABLE_SEL_RESEL 0x45
147 #define RESEL_SEQ 0x40
148 #define SEL_WITHOUT_ATN_SEQ 0x41
149 #define SEL_WITH_ATN_SEQ 0x42
150 #define SEL_WITH_ATN_AND_STOP_SEQ 0x43
151 #define ENABLE_SEL_RESEL 0x44
152 #define SEL_WITH_ATN3_SEQ 0x46
153 #define RESEL3_SEQ 0x47
154 #define SND_MSG 0x20
155 #define SND_STAT 0x21
156 #define SND_DATA 0x22
157 #define DISCONNECT_SEQ 0x23
158 #define TERMINATE_SEQ 0x24
159 #define TARGET_COMM_COMPLETE_SEQ 0x25
160 #define DISCONN 0x27
161 #define RECV_MSG_SEQ 0x28
162 #define RECV_CMD 0x29
163 #define RECV_DATA 0x2A
164 #define RECV_CMD_SEQ 0x2B
165 #define TARGET_ABORT_PIO 0x04
166 #define TRANSFER_INFORMATION 0x10
167 #define INIT_COMM_COMPLETE_SEQ 0x11
168 #define MSG_ACCEPTED 0x12
169 #define TRANSFER_PAD 0x18
170 #define SET_ATN 0x1A
171 #define RESET_ATN 0x1B
172 #define ILLEGAL 0xFF
173
174 #define PIO_MODE 0x80
175
176 #define IO_RANGE 0x20 /* 0x00 - 0x1F */
177 #define ID "sym53c416" /* Attention: copied to the sym53c416.h */
178 #define PIO_SIZE 128 /* Size of PIO fifo is 128 bytes */
179
180 #define READ_TIMEOUT 150
181 #define WRITE_TIMEOUT 150
182
183 #ifdef MODULE
184
185 #define sym53c416_base sym53c416
186 #define sym53c416_base_1 sym53c416_1
187 #define sym53c416_base_2 sym53c416_2
188 #define sym53c416_base_3 sym53c416_3
189
190 static unsigned int sym53c416_base[2] = {0,0};
191 static unsigned int sym53c416_base_1[2] = {0,0};
192 static unsigned int sym53c416_base_2[2] = {0,0};
193 static unsigned int sym53c416_base_3[2] = {0,0};
194
195 #endif
196
197 #define MAXHOSTS 4
198
199 #define SG_ADDRESS(buffer) ((char *) (page_address((buffer)->page)+(buffer)->offset))
200
201 enum phases
202 {
203 idle,
204 data_out,
205 data_in,
206 command_ph,
207 status_ph,
208 message_out,
209 message_in
210 };
211
212 typedef struct
213 {
214 int base;
215 int irq;
216 int scsi_id;
217 } host;
218
219 static host hosts[MAXHOSTS] = {
220 {0, 0, SYM53C416_SCSI_ID},
221 {0, 0, SYM53C416_SCSI_ID},
222 {0, 0, SYM53C416_SCSI_ID},
223 {0, 0, SYM53C416_SCSI_ID}
224 };
225
226 static int host_index = 0;
227 static char info[120];
228 static Scsi_Cmnd *current_command = NULL;
229 static int fastpio = 1;
230
231 static int probeaddrs[] = {0x200, 0x220, 0x240, 0};
232
233 static void sym53c416_set_transfer_counter(int base, unsigned int len)
234 {
235 /* Program Transfer Counter */
236 outb(len & 0x0000FF, base + TC_LOW);
237 outb((len & 0x00FF00) >> 8, base + TC_MID);
238 outb((len & 0xFF0000) >> 16, base + TC_HIGH);
239 }
240
241 static DEFINE_SPINLOCK(sym53c416_lock);
242
243 /* Returns the number of bytes read */
244 static __inline__ unsigned int sym53c416_read(int base, unsigned char *buffer, unsigned int len)
245 {
246 unsigned int orig_len = len;
247 unsigned long flags = 0;
248 unsigned int bytes_left;
249 unsigned long i;
250 int timeout = READ_TIMEOUT;
251
252 /* Do transfer */
253 spin_lock_irqsave(&sym53c416_lock, flags);
254 while(len && timeout)
255 {
256 bytes_left = inb(base + PIO_FIFO_CNT); /* Number of bytes in the PIO FIFO */
257 if(fastpio && bytes_left > 3)
258 {
259 insl(base + PIO_FIFO_1, buffer, bytes_left >> 2);
260 buffer += bytes_left & 0xFC;
261 len -= bytes_left & 0xFC;
262 }
263 else if(bytes_left > 0)
264 {
265 len -= bytes_left;
266 for(; bytes_left > 0; bytes_left--)
267 *(buffer++) = inb(base + PIO_FIFO_1);
268 }
269 else
270 {
271 i = jiffies + timeout;
272 spin_unlock_irqrestore(&sym53c416_lock, flags);
273 while(time_before(jiffies, i) && (inb(base + PIO_INT_REG) & EMPTY) && timeout)
274 if(inb(base + PIO_INT_REG) & SCI)
275 timeout = 0;
276 spin_lock_irqsave(&sym53c416_lock, flags);
277 if(inb(base + PIO_INT_REG) & EMPTY)
278 timeout = 0;
279 }
280 }
281 spin_unlock_irqrestore(&sym53c416_lock, flags);
282 return orig_len - len;
283 }
284
285 /* Returns the number of bytes written */
286 static __inline__ unsigned int sym53c416_write(int base, unsigned char *buffer, unsigned int len)
287 {
288 unsigned int orig_len = len;
289 unsigned long flags = 0;
290 unsigned int bufferfree;
291 unsigned long i;
292 unsigned int timeout = WRITE_TIMEOUT;
293
294 /* Do transfer */
295 spin_lock_irqsave(&sym53c416_lock, flags);
296 while(len && timeout)
297 {
298 bufferfree = PIO_SIZE - inb(base + PIO_FIFO_CNT);
299 if(bufferfree > len)
300 bufferfree = len;
301 if(fastpio && bufferfree > 3)
302 {
303 outsl(base + PIO_FIFO_1, buffer, bufferfree >> 2);
304 buffer += bufferfree & 0xFC;
305 len -= bufferfree & 0xFC;
306 }
307 else if(bufferfree > 0)
308 {
309 len -= bufferfree;
310 for(; bufferfree > 0; bufferfree--)
311 outb(*(buffer++), base + PIO_FIFO_1);
312 }
313 else
314 {
315 i = jiffies + timeout;
316 spin_unlock_irqrestore(&sym53c416_lock, flags);
317 while(time_before(jiffies, i) && (inb(base + PIO_INT_REG) & FULL) && timeout)
318 ;
319 spin_lock_irqsave(&sym53c416_lock, flags);
320 if(inb(base + PIO_INT_REG) & FULL)
321 timeout = 0;
322 }
323 }
324 spin_unlock_irqrestore(&sym53c416_lock, flags);
325 return orig_len - len;
326 }
327
328 static irqreturn_t sym53c416_intr_handle(int irq, void *dev_id)
329 {
330 struct Scsi_Host *dev = dev_id;
331 int base = 0;
332 int i;
333 unsigned long flags = 0;
334 unsigned char status_reg, pio_int_reg, int_reg;
335 struct scatterlist *sg;
336 unsigned int tot_trans = 0;
337
338 /* We search the base address of the host adapter which caused the interrupt */
339 /* FIXME: should pass dev_id sensibly as hosts[i] */
340 for(i = 0; i < host_index && !base; i++)
341 if(irq == hosts[i].irq)
342 base = hosts[i].base;
343 /* If no adapter found, we cannot handle the interrupt. Leave a message */
344 /* and continue. This should never happen... */
345 if(!base)
346 {
347 printk(KERN_ERR "sym53c416: No host adapter defined for interrupt %d\n", irq);
348 return IRQ_NONE;
349 }
350 /* Now we have the base address and we can start handling the interrupt */
351
352 spin_lock_irqsave(dev->host_lock,flags);
353 status_reg = inb(base + STATUS_REG);
354 pio_int_reg = inb(base + PIO_INT_REG);
355 int_reg = inb(base + INT_REG);
356 spin_unlock_irqrestore(dev->host_lock, flags);
357
358 /* First, we handle error conditions */
359 if(int_reg & SCI) /* SCSI Reset */
360 {
361 printk(KERN_DEBUG "sym53c416: Reset received\n");
362 current_command->SCp.phase = idle;
363 current_command->result = DID_RESET << 16;
364 spin_lock_irqsave(dev->host_lock, flags);
365 current_command->scsi_done(current_command);
366 spin_unlock_irqrestore(dev->host_lock, flags);
367 goto out;
368 }
369 if(int_reg & ILCMD) /* Illegal Command */
370 {
371 printk(KERN_WARNING "sym53c416: Illegal Command: 0x%02x.\n", inb(base + COMMAND_REG));
372 current_command->SCp.phase = idle;
373 current_command->result = DID_ERROR << 16;
374 spin_lock_irqsave(dev->host_lock, flags);
375 current_command->scsi_done(current_command);
376 spin_unlock_irqrestore(dev->host_lock, flags);
377 goto out;
378 }
379 if(status_reg & GE) /* Gross Error */
380 {
381 printk(KERN_WARNING "sym53c416: Controller reports gross error.\n");
382 current_command->SCp.phase = idle;
383 current_command->result = DID_ERROR << 16;
384 spin_lock_irqsave(dev->host_lock, flags);
385 current_command->scsi_done(current_command);
386 spin_unlock_irqrestore(dev->host_lock, flags);
387 goto out;
388 }
389 if(status_reg & PE) /* Parity Error */
390 {
391 printk(KERN_WARNING "sym53c416:SCSI parity error.\n");
392 current_command->SCp.phase = idle;
393 current_command->result = DID_PARITY << 16;
394 spin_lock_irqsave(dev->host_lock, flags);
395 current_command->scsi_done(current_command);
396 spin_unlock_irqrestore(dev->host_lock, flags);
397 goto out;
398 }
399 if(pio_int_reg & (CE | OUE))
400 {
401 printk(KERN_WARNING "sym53c416: PIO interrupt error.\n");
402 current_command->SCp.phase = idle;
403 current_command->result = DID_ERROR << 16;
404 spin_lock_irqsave(dev->host_lock, flags);
405 current_command->scsi_done(current_command);
406 spin_unlock_irqrestore(dev->host_lock, flags);
407 goto out;
408 }
409 if(int_reg & DIS) /* Disconnect */
410 {
411 if(current_command->SCp.phase != message_in)
412 current_command->result = DID_NO_CONNECT << 16;
413 else
414 current_command->result = (current_command->SCp.Status & 0xFF) | ((current_command->SCp.Message & 0xFF) << 8) | (DID_OK << 16);
415 current_command->SCp.phase = idle;
416 spin_lock_irqsave(dev->host_lock, flags);
417 current_command->scsi_done(current_command);
418 spin_unlock_irqrestore(dev->host_lock, flags);
419 goto out;
420 }
421 /* Now we handle SCSI phases */
422
423 switch(status_reg & PHBITS) /* Filter SCSI phase out of status reg */
424 {
425 case PHASE_DATA_OUT:
426 {
427 if(int_reg & BS)
428 {
429 current_command->SCp.phase = data_out;
430 outb(FLUSH_FIFO, base + COMMAND_REG);
431 sym53c416_set_transfer_counter(base,
432 scsi_bufflen(current_command));
433 outb(TRANSFER_INFORMATION | PIO_MODE, base + COMMAND_REG);
434
435 scsi_for_each_sg(current_command,
436 sg, scsi_sg_count(current_command), i) {
437 tot_trans += sym53c416_write(base,
438 SG_ADDRESS(sg),
439 sg->length);
440 }
441 if(tot_trans < current_command->underflow)
442 printk(KERN_WARNING "sym53c416: Underflow, wrote %d bytes, request for %d bytes.\n", tot_trans, current_command->underflow);
443 }
444 break;
445 }
446
447 case PHASE_DATA_IN:
448 {
449 if(int_reg & BS)
450 {
451 current_command->SCp.phase = data_in;
452 outb(FLUSH_FIFO, base + COMMAND_REG);
453 sym53c416_set_transfer_counter(base,
454 scsi_bufflen(current_command));
455
456 outb(TRANSFER_INFORMATION | PIO_MODE, base + COMMAND_REG);
457
458 scsi_for_each_sg(current_command,
459 sg, scsi_sg_count(current_command), i) {
460 tot_trans += sym53c416_read(base,
461 SG_ADDRESS(sg),
462 sg->length);
463 }
464 if(tot_trans < current_command->underflow)
465 printk(KERN_WARNING "sym53c416: Underflow, read %d bytes, request for %d bytes.\n", tot_trans, current_command->underflow);
466 }
467 break;
468 }
469
470 case PHASE_COMMAND:
471 {
472 current_command->SCp.phase = command_ph;
473 printk(KERN_ERR "sym53c416: Unknown interrupt in command phase.\n");
474 break;
475 }
476
477 case PHASE_STATUS:
478 {
479 current_command->SCp.phase = status_ph;
480 outb(FLUSH_FIFO, base + COMMAND_REG);
481 outb(INIT_COMM_COMPLETE_SEQ, base + COMMAND_REG);
482 break;
483 }
484
485 case PHASE_RESERVED_1:
486 case PHASE_RESERVED_2:
487 {
488 printk(KERN_ERR "sym53c416: Reserved phase occurred.\n");
489 break;
490 }
491
492 case PHASE_MESSAGE_OUT:
493 {
494 current_command->SCp.phase = message_out;
495 outb(SET_ATN, base + COMMAND_REG);
496 outb(MSG_ACCEPTED, base + COMMAND_REG);
497 break;
498 }
499
500 case PHASE_MESSAGE_IN:
501 {
502 current_command->SCp.phase = message_in;
503 current_command->SCp.Status = inb(base + SCSI_FIFO);
504 current_command->SCp.Message = inb(base + SCSI_FIFO);
505 if(current_command->SCp.Message == SAVE_POINTERS || current_command->SCp.Message == DISCONNECT)
506 outb(SET_ATN, base + COMMAND_REG);
507 outb(MSG_ACCEPTED, base + COMMAND_REG);
508 break;
509 }
510 }
511 out:
512 return IRQ_HANDLED;
513 }
514
515 static void sym53c416_init(int base, int scsi_id)
516 {
517 outb(RESET_CHIP, base + COMMAND_REG);
518 outb(NOOP, base + COMMAND_REG);
519 outb(0x99, base + TOM); /* Time out of 250 ms */
520 outb(0x05, base + STP);
521 outb(0x00, base + SYNC_OFFSET);
522 outb(EPC | scsi_id, base + CONF_REG_1);
523 outb(FE | SCSI2 | TBPA, base + CONF_REG_2);
524 outb(IDMRC | QTE | CDB10 | FSCSI | FCLK, base + CONF_REG_3);
525 outb(0x83 | EAN, base + CONF_REG_4);
526 outb(IE | WSE0, base + CONF_REG_5);
527 outb(0, base + FEATURE_EN);
528 }
529
530 static int sym53c416_probeirq(int base, int scsi_id)
531 {
532 int irq, irqs;
533 unsigned long i;
534
535 /* Clear interrupt register */
536 inb(base + INT_REG);
537 /* Start probing for irq's */
538 irqs = probe_irq_on();
539 /* Reinit chip */
540 sym53c416_init(base, scsi_id);
541 /* Cause interrupt */
542 outb(NOOP, base + COMMAND_REG);
543 outb(ILLEGAL, base + COMMAND_REG);
544 outb(0x07, base + DEST_BUS_ID);
545 outb(0x00, base + DEST_BUS_ID);
546 /* Wait for interrupt to occur */
547 i = jiffies + 20;
548 while(time_before(jiffies, i) && !(inb(base + STATUS_REG) & SCI))
549 barrier();
550 if(time_before_eq(i, jiffies)) /* timed out */
551 return 0;
552 /* Get occurred irq */
553 irq = probe_irq_off(irqs);
554 sym53c416_init(base, scsi_id);
555 return irq;
556 }
557
558 /* Setup: sym53c416=base,irq */
559 void sym53c416_setup(char *str, int *ints)
560 {
561 int i;
562
563 if(host_index >= MAXHOSTS)
564 {
565 printk(KERN_WARNING "sym53c416: Too many hosts defined\n");
566 return;
567 }
568 if(ints[0] < 1 || ints[0] > 2)
569 {
570 printk(KERN_ERR "sym53c416: Wrong number of parameters:\n");
571 printk(KERN_ERR "sym53c416: usage: sym53c416=<base>[,<irq>]\n");
572 return;
573 }
574 for(i = 0; i < host_index && i >= 0; i++)
575 if(hosts[i].base == ints[1])
576 i = -2;
577 if(i >= 0)
578 {
579 hosts[host_index].base = ints[1];
580 hosts[host_index].irq = (ints[0] == 2)? ints[2] : 0;
581 host_index++;
582 }
583 }
584
585 static int sym53c416_test(int base)
586 {
587 outb(RESET_CHIP, base + COMMAND_REG);
588 outb(NOOP, base + COMMAND_REG);
589 if(inb(base + COMMAND_REG) != NOOP)
590 return 0;
591 if(!inb(base + TC_HIGH) || inb(base + TC_HIGH) == 0xFF)
592 return 0;
593 if((inb(base + PIO_INT_REG) & (FULL | EMPTY | CE | OUE | FIE | EIE)) != EMPTY)
594 return 0;
595 return 1;
596 }
597
598
599 static struct isapnp_device_id id_table[] __devinitdata = {
600 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
601 ISAPNP_VENDOR('S','L','I'), ISAPNP_FUNCTION(0x4161), 0 },
602 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
603 ISAPNP_VENDOR('S','L','I'), ISAPNP_FUNCTION(0x4163), 0 },
604 { ISAPNP_DEVICE_SINGLE_END }
605 };
606
607 MODULE_DEVICE_TABLE(isapnp, id_table);
608
609 static void sym53c416_probe(void)
610 {
611 int *base = probeaddrs;
612 int ints[2];
613
614 ints[0] = 1;
615 for(; *base; base++) {
616 if (request_region(*base, IO_RANGE, ID)) {
617 if (sym53c416_test(*base)) {
618 ints[1] = *base;
619 sym53c416_setup(NULL, ints);
620 }
621 release_region(*base, IO_RANGE);
622 }
623 }
624 }
625
626 int __init sym53c416_detect(struct scsi_host_template *tpnt)
627 {
628 unsigned long flags;
629 struct Scsi_Host * shpnt = NULL;
630 int i;
631 int count;
632 struct pnp_dev *idev = NULL;
633
634 #ifdef MODULE
635 int ints[3];
636
637 ints[0] = 2;
638 if(sym53c416_base)
639 {
640 ints[1] = sym53c416_base[0];
641 ints[2] = sym53c416_base[1];
642 sym53c416_setup(NULL, ints);
643 }
644 if(sym53c416_base_1)
645 {
646 ints[1] = sym53c416_base_1[0];
647 ints[2] = sym53c416_base_1[1];
648 sym53c416_setup(NULL, ints);
649 }
650 if(sym53c416_base_2)
651 {
652 ints[1] = sym53c416_base_2[0];
653 ints[2] = sym53c416_base_2[1];
654 sym53c416_setup(NULL, ints);
655 }
656 if(sym53c416_base_3)
657 {
658 ints[1] = sym53c416_base_3[0];
659 ints[2] = sym53c416_base_3[1];
660 sym53c416_setup(NULL, ints);
661 }
662 #endif
663 printk(KERN_INFO "sym53c416.c: %s\n", VERSION_STRING);
664
665 for (i=0; id_table[i].vendor != 0; i++) {
666 while((idev=pnp_find_dev(NULL, id_table[i].vendor,
667 id_table[i].function, idev))!=NULL)
668 {
669 int i[3];
670
671 if(pnp_device_attach(idev)<0)
672 {
673 printk(KERN_WARNING "sym53c416: unable to attach PnP device.\n");
674 continue;
675 }
676 if(pnp_activate_dev(idev) < 0)
677 {
678 printk(KERN_WARNING "sym53c416: unable to activate PnP device.\n");
679 pnp_device_detach(idev);
680 continue;
681
682 }
683
684 i[0] = 2;
685 i[1] = pnp_port_start(idev, 0);
686 i[2] = pnp_irq(idev, 0);
687
688 printk(KERN_INFO "sym53c416: ISAPnP card found and configured at 0x%X, IRQ %d.\n",
689 i[1], i[2]);
690 sym53c416_setup(NULL, i);
691 }
692 }
693 sym53c416_probe();
694
695 /* Now we register and set up each host adapter found... */
696 for(count = 0, i = 0; i < host_index; i++) {
697 if (!request_region(hosts[i].base, IO_RANGE, ID))
698 continue;
699 if (!sym53c416_test(hosts[i].base)) {
700 printk(KERN_WARNING "No sym53c416 found at address 0x%03x\n", hosts[i].base);
701 goto fail_release_region;
702 }
703
704 /* We don't have an irq yet, so we should probe for one */
705 if (!hosts[i].irq)
706 hosts[i].irq = sym53c416_probeirq(hosts[i].base, hosts[i].scsi_id);
707 if (!hosts[i].irq)
708 goto fail_release_region;
709
710 shpnt = scsi_register(tpnt, 0);
711 if (!shpnt)
712 goto fail_release_region;
713 /* Request for specified IRQ */
714 if (request_irq(hosts[i].irq, sym53c416_intr_handle, 0, ID, shpnt))
715 goto fail_free_host;
716
717 spin_lock_irqsave(&sym53c416_lock, flags);
718 shpnt->unique_id = hosts[i].base;
719 shpnt->io_port = hosts[i].base;
720 shpnt->n_io_port = IO_RANGE;
721 shpnt->irq = hosts[i].irq;
722 shpnt->this_id = hosts[i].scsi_id;
723 sym53c416_init(hosts[i].base, hosts[i].scsi_id);
724 count++;
725 spin_unlock_irqrestore(&sym53c416_lock, flags);
726 continue;
727
728 fail_free_host:
729 scsi_unregister(shpnt);
730 fail_release_region:
731 release_region(hosts[i].base, IO_RANGE);
732 }
733 return count;
734 }
735
736 const char *sym53c416_info(struct Scsi_Host *SChost)
737 {
738 int i;
739 int base = SChost->io_port;
740 int irq = SChost->irq;
741 int scsi_id = 0;
742 int rev = inb(base + TC_HIGH);
743
744 for(i = 0; i < host_index; i++)
745 if(hosts[i].base == base)
746 scsi_id = hosts[i].scsi_id;
747 sprintf(info, "Symbios Logic 53c416 (rev. %d) at 0x%03x, irq %d, SCSI-ID %d, %s pio", rev, base, irq, scsi_id, (fastpio)? "fast" : "slow");
748 return info;
749 }
750
751 int sym53c416_queuecommand(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
752 {
753 int base;
754 unsigned long flags = 0;
755 int i;
756
757 /* Store base register as we can have more than one controller in the system */
758 base = SCpnt->device->host->io_port;
759 current_command = SCpnt; /* set current command */
760 current_command->scsi_done = done; /* set ptr to done function */
761 current_command->SCp.phase = command_ph; /* currect phase is the command phase */
762 current_command->SCp.Status = 0;
763 current_command->SCp.Message = 0;
764
765 spin_lock_irqsave(&sym53c416_lock, flags);
766 outb(scmd_id(SCpnt), base + DEST_BUS_ID); /* Set scsi id target */
767 outb(FLUSH_FIFO, base + COMMAND_REG); /* Flush SCSI and PIO FIFO's */
768 /* Write SCSI command into the SCSI fifo */
769 for(i = 0; i < SCpnt->cmd_len; i++)
770 outb(SCpnt->cmnd[i], base + SCSI_FIFO);
771 /* Start selection sequence */
772 outb(SEL_WITHOUT_ATN_SEQ, base + COMMAND_REG);
773 /* Now an interrupt will be generated which we will catch in out interrupt routine */
774 spin_unlock_irqrestore(&sym53c416_lock, flags);
775 return 0;
776 }
777
778 static int sym53c416_host_reset(Scsi_Cmnd *SCpnt)
779 {
780 int base;
781 int scsi_id = -1;
782 int i;
783 unsigned long flags;
784
785 spin_lock_irqsave(&sym53c416_lock, flags);
786
787 /* printk("sym53c416_reset\n"); */
788 base = SCpnt->device->host->io_port;
789 /* search scsi_id - fixme, we shouldnt need to iterate for this! */
790 for(i = 0; i < host_index && scsi_id == -1; i++)
791 if(hosts[i].base == base)
792 scsi_id = hosts[i].scsi_id;
793 outb(RESET_CHIP, base + COMMAND_REG);
794 outb(NOOP | PIO_MODE, base + COMMAND_REG);
795 outb(RESET_SCSI_BUS, base + COMMAND_REG);
796 sym53c416_init(base, scsi_id);
797
798 spin_unlock_irqrestore(&sym53c416_lock, flags);
799 return SUCCESS;
800 }
801
802 static int sym53c416_release(struct Scsi_Host *shost)
803 {
804 if (shost->irq)
805 free_irq(shost->irq, shost);
806 if (shost->io_port && shost->n_io_port)
807 release_region(shost->io_port, shost->n_io_port);
808 return 0;
809 }
810
811 static int sym53c416_bios_param(struct scsi_device *sdev,
812 struct block_device *dev,
813 sector_t capacity, int *ip)
814 {
815 int size;
816
817 size = capacity;
818 ip[0] = 64; /* heads */
819 ip[1] = 32; /* sectors */
820 if((ip[2] = size >> 11) > 1024) /* cylinders, test for big disk */
821 {
822 ip[0] = 255; /* heads */
823 ip[1] = 63; /* sectors */
824 ip[2] = size / (255 * 63); /* cylinders */
825 }
826 return 0;
827 }
828
829 /* Loadable module support */
830 #ifdef MODULE
831
832 MODULE_AUTHOR("Lieven Willems");
833 MODULE_LICENSE("GPL");
834
835 module_param_array(sym53c416, uint, NULL, 0);
836 module_param_array(sym53c416_1, uint, NULL, 0);
837 module_param_array(sym53c416_2, uint, NULL, 0);
838 module_param_array(sym53c416_3, uint, NULL, 0);
839
840 #endif
841
842 static struct scsi_host_template driver_template = {
843 .proc_name = "sym53c416",
844 .name = "Symbios Logic 53c416",
845 .detect = sym53c416_detect,
846 .info = sym53c416_info,
847 .queuecommand = sym53c416_queuecommand,
848 .eh_host_reset_handler =sym53c416_host_reset,
849 .release = sym53c416_release,
850 .bios_param = sym53c416_bios_param,
851 .can_queue = 1,
852 .this_id = SYM53C416_SCSI_ID,
853 .sg_tablesize = 32,
854 .cmd_per_lun = 1,
855 .unchecked_isa_dma = 1,
856 .use_clustering = ENABLE_CLUSTERING,
857 .use_sg_chaining = ENABLE_SG_CHAINING,
858 };
859 #include "scsi_module.c"
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