projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / scsi / sym53c416.c
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/sched.h>
36 #include <linux/interrupt.h>
37 #include <linux/delay.h>
38 #include <linux/proc_fs.h>
39 #include <linux/spinlock.h>
40 #include <asm/dma.h>
41 #include <asm/system.h>
42 #include <asm/io.h>
43 #include <linux/blkdev.h>
44 #include <linux/isapnp.h>
45 #include "scsi.h"
46 #include <scsi/scsi_host.h>
47 #include "sym53c416.h"
48
49 #define VERSION_STRING "Version 1.0.0-ac"
50
51 #define TC_LOW 0x00 /* Transfer counter low */
52 #define TC_MID 0x01 /* Transfer counter mid */
53 #define SCSI_FIFO 0x02 /* SCSI FIFO register */
54 #define COMMAND_REG 0x03 /* Command Register */
55 #define STATUS_REG 0x04 /* Status Register (READ) */
56 #define DEST_BUS_ID 0x04 /* Destination Bus ID (WRITE) */
57 #define INT_REG 0x05 /* Interrupt Register (READ) */
58 #define TOM 0x05 /* Time out multiplier (WRITE) */
59 #define STP 0x06 /* Synchronous Transfer period */
60 #define SYNC_OFFSET 0x07 /* Synchronous Offset */
61 #define CONF_REG_1 0x08 /* Configuration register 1 */
62 #define CONF_REG_2 0x0B /* Configuration register 2 */
63 #define CONF_REG_3 0x0C /* Configuration register 3 */
64 #define CONF_REG_4 0x0D /* Configuration register 4 */
65 #define TC_HIGH 0x0E /* Transfer counter high */
66 #define PIO_FIFO_1 0x10 /* PIO FIFO register 1 */
67 #define PIO_FIFO_2 0x11 /* PIO FIFO register 2 */
68 #define PIO_FIFO_3 0x12 /* PIO FIFO register 3 */
69 #define PIO_FIFO_4 0x13 /* PIO FIFO register 4 */
70 #define PIO_FIFO_CNT 0x14 /* PIO FIFO count */
71 #define PIO_INT_REG 0x15 /* PIO interrupt register */
72 #define CONF_REG_5 0x16 /* Configuration register 5 */
73 #define FEATURE_EN 0x1D /* Feature Enable register */
74
75 /* Configuration register 1 entries: */
76 /* Bits 2-0: SCSI ID of host adapter */
77 #define SCM 0x80 /* Slow Cable Mode */
78 #define SRID 0x40 /* SCSI Reset Interrupt Disable */
79 #define PTM 0x20 /* Parity Test Mode */
80 #define EPC 0x10 /* Enable Parity Checking */
81 #define CTME 0x08 /* Special Test Mode */
82
83 /* Configuration register 2 entries: */
84 #define FE 0x40 /* Features Enable */
85 #define SCSI2 0x08 /* SCSI 2 Enable */
86 #define TBPA 0x04 /* Target Bad Parity Abort */
87
88 /* Configuration register 3 entries: */
89 #define IDMRC 0x80 /* ID Message Reserved Check */
90 #define QTE 0x40 /* Queue Tag Enable */
91 #define CDB10 0x20 /* Command Descriptor Block 10 */
92 #define FSCSI 0x10 /* FastSCSI */
93 #define FCLK 0x08 /* FastClock */
94
95 /* Configuration register 4 entries: */
96 #define RBS 0x08 /* Register bank select */
97 #define EAN 0x04 /* Enable Active Negotiation */
98
99 /* Configuration register 5 entries: */
100 #define LPSR 0x80 /* Lower Power SCSI Reset */
101 #define IE 0x20 /* Interrupt Enable */
102 #define LPM 0x02 /* Low Power Mode */
103 #define WSE0 0x01 /* 0WS Enable */
104
105 /* Interrupt register entries: */
106 #define SRST 0x80 /* SCSI Reset */
107 #define ILCMD 0x40 /* Illegal Command */
108 #define DIS 0x20 /* Disconnect */
109 #define BS 0x10 /* Bus Service */
110 #define FC 0x08 /* Function Complete */
111 #define RESEL 0x04 /* Reselected */
112 #define SI 0x03 /* Selection Interrupt */
113
114 /* Status Register Entries: */
115 #define SCI 0x80 /* SCSI Core Int */
116 #define GE 0x40 /* Gross Error */
117 #define PE 0x20 /* Parity Error */
118 #define TC 0x10 /* Terminal Count */
119 #define VGC 0x08 /* Valid Group Code */
120 #define PHBITS 0x07 /* Phase bits */
121
122 /* PIO Interrupt Register Entries: */
123 #define SCI 0x80 /* SCSI Core Int */
124 #define PFI 0x40 /* PIO FIFO Interrupt */
125 #define FULL 0x20 /* PIO FIFO Full */
126 #define EMPTY 0x10 /* PIO FIFO Empty */
127 #define CE 0x08 /* Collision Error */
128 #define OUE 0x04 /* Overflow / Underflow error */
129 #define FIE 0x02 /* Full Interrupt Enable */
130 #define EIE 0x01 /* Empty Interrupt Enable */
131
132 /* SYM53C416 SCSI phases (lower 3 bits of SYM53C416_STATUS_REG) */
133 #define PHASE_DATA_OUT 0x00
134 #define PHASE_DATA_IN 0x01
135 #define PHASE_COMMAND 0x02
136 #define PHASE_STATUS 0x03
137 #define PHASE_RESERVED_1 0x04
138 #define PHASE_RESERVED_2 0x05
139 #define PHASE_MESSAGE_OUT 0x06
140 #define PHASE_MESSAGE_IN 0x07
141
142 /* SYM53C416 core commands */
143 #define NOOP 0x00
144 #define FLUSH_FIFO 0x01
145 #define RESET_CHIP 0x02
146 #define RESET_SCSI_BUS 0x03
147 #define DISABLE_SEL_RESEL 0x45
148 #define RESEL_SEQ 0x40
149 #define SEL_WITHOUT_ATN_SEQ 0x41
150 #define SEL_WITH_ATN_SEQ 0x42
151 #define SEL_WITH_ATN_AND_STOP_SEQ 0x43
152 #define ENABLE_SEL_RESEL 0x44
153 #define SEL_WITH_ATN3_SEQ 0x46
154 #define RESEL3_SEQ 0x47
155 #define SND_MSG 0x20
156 #define SND_STAT 0x21
157 #define SND_DATA 0x22
158 #define DISCONNECT_SEQ 0x23
159 #define TERMINATE_SEQ 0x24
160 #define TARGET_COMM_COMPLETE_SEQ 0x25
161 #define DISCONN 0x27
162 #define RECV_MSG_SEQ 0x28
163 #define RECV_CMD 0x29
164 #define RECV_DATA 0x2A
165 #define RECV_CMD_SEQ 0x2B
166 #define TARGET_ABORT_PIO 0x04
167 #define TRANSFER_INFORMATION 0x10
168 #define INIT_COMM_COMPLETE_SEQ 0x11
169 #define MSG_ACCEPTED 0x12
170 #define TRANSFER_PAD 0x18
171 #define SET_ATN 0x1A
172 #define RESET_ATN 0x1B
173 #define ILLEGAL 0xFF
174
175 #define PIO_MODE 0x80
176
177 #define IO_RANGE 0x20 /* 0x00 - 0x1F */
178 #define ID "sym53c416" /* Attention: copied to the sym53c416.h */
179 #define PIO_SIZE 128 /* Size of PIO fifo is 128 bytes */
180
181 #define READ_TIMEOUT 150
182 #define WRITE_TIMEOUT 150
183
184 #ifdef MODULE
185
186 #define sym53c416_base sym53c416
187 #define sym53c416_base_1 sym53c416_1
188 #define sym53c416_base_2 sym53c416_2
189 #define sym53c416_base_3 sym53c416_3
190
191 static unsigned int sym53c416_base[2] = {0,0};
192 static unsigned int sym53c416_base_1[2] = {0,0};
193 static unsigned int sym53c416_base_2[2] = {0,0};
194 static unsigned int sym53c416_base_3[2] = {0,0};
195
196 #endif
197
198 #define MAXHOSTS 4
199
200 #define SG_ADDRESS(buffer) ((char *) (page_address((buffer)->page)+(buffer)->offset))
201
202 enum phases
203 {
204 idle,
205 data_out,
206 data_in,
207 command_ph,
208 status_ph,
209 message_out,
210 message_in
211 };
212
213 typedef struct
214 {
215 int base;
216 int irq;
217 int scsi_id;
218 } host;
219
220 static host hosts[MAXHOSTS] = {
221 {0, 0, SYM53C416_SCSI_ID},
222 {0, 0, SYM53C416_SCSI_ID},
223 {0, 0, SYM53C416_SCSI_ID},
224 {0, 0, SYM53C416_SCSI_ID}
225 };
226
227 static int host_index = 0;
228 static char info[120];
229 static Scsi_Cmnd *current_command = NULL;
230 static int fastpio = 1;
231
232 static int probeaddrs[] = {0x200, 0x220, 0x240, 0};
233
234 static void sym53c416_set_transfer_counter(int base, unsigned int len)
235 {
236 /* Program Transfer Counter */
237 outb(len & 0x0000FF, base + TC_LOW);
238 outb((len & 0x00FF00) >> 8, base + TC_MID);
239 outb((len & 0xFF0000) >> 16, base + TC_HIGH);
240 }
241
242 static DEFINE_SPINLOCK(sym53c416_lock);
243
244 /* Returns the number of bytes read */
245 static __inline__ unsigned int sym53c416_read(int base, unsigned char *buffer, unsigned int len)
246 {
247 unsigned int orig_len = len;
248 unsigned long flags = 0;
249 unsigned int bytes_left;
250 unsigned long i;
251 int timeout = READ_TIMEOUT;
252
253 /* Do transfer */
254 spin_lock_irqsave(&sym53c416_lock, flags);
255 while(len && timeout)
256 {
257 bytes_left = inb(base + PIO_FIFO_CNT); /* Number of bytes in the PIO FIFO */
258 if(fastpio && bytes_left > 3)
259 {
260 insl(base + PIO_FIFO_1, buffer, bytes_left >> 2);
261 buffer += bytes_left & 0xFC;
262 len -= bytes_left & 0xFC;
263 }
264 else if(bytes_left > 0)
265 {
266 len -= bytes_left;
267 for(; bytes_left > 0; bytes_left--)
268 *(buffer++) = inb(base + PIO_FIFO_1);
269 }
270 else
271 {
272 i = jiffies + timeout;
273 spin_unlock_irqrestore(&sym53c416_lock, flags);
274 while(time_before(jiffies, i) && (inb(base + PIO_INT_REG) & EMPTY) && timeout)
275 if(inb(base + PIO_INT_REG) & SCI)
276 timeout = 0;
277 spin_lock_irqsave(&sym53c416_lock, flags);
278 if(inb(base + PIO_INT_REG) & EMPTY)
279 timeout = 0;
280 }
281 }
282 spin_unlock_irqrestore(&sym53c416_lock, flags);
283 return orig_len - len;
284 }
285
286 /* Returns the number of bytes written */
287 static __inline__ unsigned int sym53c416_write(int base, unsigned char *buffer, unsigned int len)
288 {
289 unsigned int orig_len = len;
290 unsigned long flags = 0;
291 unsigned int bufferfree;
292 unsigned long i;
293 unsigned int timeout = WRITE_TIMEOUT;
294
295 /* Do transfer */
296 spin_lock_irqsave(&sym53c416_lock, flags);
297 while(len && timeout)
298 {
299 bufferfree = PIO_SIZE - inb(base + PIO_FIFO_CNT);
300 if(bufferfree > len)
301 bufferfree = len;
302 if(fastpio && bufferfree > 3)
303 {
304 outsl(base + PIO_FIFO_1, buffer, bufferfree >> 2);
305 buffer += bufferfree & 0xFC;
306 len -= bufferfree & 0xFC;
307 }
308 else if(bufferfree > 0)
309 {
310 len -= bufferfree;
311 for(; bufferfree > 0; bufferfree--)
312 outb(*(buffer++), base + PIO_FIFO_1);
313 }
314 else
315 {
316 i = jiffies + timeout;
317 spin_unlock_irqrestore(&sym53c416_lock, flags);
318 while(time_before(jiffies, i) && (inb(base + PIO_INT_REG) & FULL) && timeout)
319 ;
320 spin_lock_irqsave(&sym53c416_lock, flags);
321 if(inb(base + PIO_INT_REG) & FULL)
322 timeout = 0;
323 }
324 }
325 spin_unlock_irqrestore(&sym53c416_lock, flags);
326 return orig_len - len;
327 }
328
329 static irqreturn_t sym53c416_intr_handle(int irq, void *dev_id)
330 {
331 struct Scsi_Host *dev = dev_id;
332 int base = 0;
333 int i;
334 unsigned long flags = 0;
335 unsigned char status_reg, pio_int_reg, int_reg;
336 struct scatterlist *sglist;
337 unsigned int sgcount;
338 unsigned int tot_trans = 0;
339
340 /* We search the base address of the host adapter which caused the interrupt */
341 /* FIXME: should pass dev_id sensibly as hosts[i] */
342 for(i = 0; i < host_index && !base; i++)
343 if(irq == hosts[i].irq)
344 base = hosts[i].base;
345 /* If no adapter found, we cannot handle the interrupt. Leave a message */
346 /* and continue. This should never happen... */
347 if(!base)
348 {
349 printk(KERN_ERR "sym53c416: No host adapter defined for interrupt %d\n", irq);
350 return IRQ_NONE;
351 }
352 /* Now we have the base address and we can start handling the interrupt */
353
354 spin_lock_irqsave(dev->host_lock,flags);
355 status_reg = inb(base + STATUS_REG);
356 pio_int_reg = inb(base + PIO_INT_REG);
357 int_reg = inb(base + INT_REG);
358 spin_unlock_irqrestore(dev->host_lock, flags);
359
360 /* First, we handle error conditions */
361 if(int_reg & SCI) /* SCSI Reset */
362 {
363 printk(KERN_DEBUG "sym53c416: Reset received\n");
364 current_command->SCp.phase = idle;
365 current_command->result = DID_RESET << 16;
366 spin_lock_irqsave(dev->host_lock, flags);
367 current_command->scsi_done(current_command);
368 spin_unlock_irqrestore(dev->host_lock, flags);
369 goto out;
370 }
371 if(int_reg & ILCMD) /* Illegal Command */
372 {
373 printk(KERN_WARNING "sym53c416: Illegal Command: 0x%02x.\n", inb(base + COMMAND_REG));
374 current_command->SCp.phase = idle;
375 current_command->result = DID_ERROR << 16;
376 spin_lock_irqsave(dev->host_lock, flags);
377 current_command->scsi_done(current_command);
378 spin_unlock_irqrestore(dev->host_lock, flags);
379 goto out;
380 }
381 if(status_reg & GE) /* Gross Error */
382 {
383 printk(KERN_WARNING "sym53c416: Controller reports gross error.\n");
384 current_command->SCp.phase = idle;
385 current_command->result = DID_ERROR << 16;
386 spin_lock_irqsave(dev->host_lock, flags);
387 current_command->scsi_done(current_command);
388 spin_unlock_irqrestore(dev->host_lock, flags);
389 goto out;
390 }
391 if(status_reg & PE) /* Parity Error */
392 {
393 printk(KERN_WARNING "sym53c416:SCSI parity error.\n");
394 current_command->SCp.phase = idle;
395 current_command->result = DID_PARITY << 16;
396 spin_lock_irqsave(dev->host_lock, flags);
397 current_command->scsi_done(current_command);
398 spin_unlock_irqrestore(dev->host_lock, flags);
399 goto out;
400 }
401 if(pio_int_reg & (CE | OUE))
402 {
403 printk(KERN_WARNING "sym53c416: PIO interrupt error.\n");
404 current_command->SCp.phase = idle;
405 current_command->result = DID_ERROR << 16;
406 spin_lock_irqsave(dev->host_lock, flags);
407 current_command->scsi_done(current_command);
408 spin_unlock_irqrestore(dev->host_lock, flags);
409 goto out;
410 }
411 if(int_reg & DIS) /* Disconnect */
412 {
413 if(current_command->SCp.phase != message_in)
414 current_command->result = DID_NO_CONNECT << 16;
415 else
416 current_command->result = (current_command->SCp.Status & 0xFF) | ((current_command->SCp.Message & 0xFF) << 8) | (DID_OK << 16);
417 current_command->SCp.phase = idle;
418 spin_lock_irqsave(dev->host_lock, flags);
419 current_command->scsi_done(current_command);
420 spin_unlock_irqrestore(dev->host_lock, flags);
421 goto out;
422 }
423 /* Now we handle SCSI phases */
424
425 switch(status_reg & PHBITS) /* Filter SCSI phase out of status reg */
426 {
427 case PHASE_DATA_OUT:
428 {
429 if(int_reg & BS)
430 {
431 current_command->SCp.phase = data_out;
432 outb(FLUSH_FIFO, base + COMMAND_REG);
433 sym53c416_set_transfer_counter(base, current_command->request_bufflen);
434 outb(TRANSFER_INFORMATION | PIO_MODE, base + COMMAND_REG);
435 if(!current_command->use_sg)
436 tot_trans = sym53c416_write(base, current_command->request_buffer, current_command->request_bufflen);
437 else
438 {
439 sgcount = current_command->use_sg;
440 sglist = current_command->request_buffer;
441 while(sgcount--)
442 {
443 tot_trans += sym53c416_write(base, SG_ADDRESS(sglist), sglist->length);
444 sglist++;
445 }
446 }
447 if(tot_trans < current_command->underflow)
448 printk(KERN_WARNING "sym53c416: Underflow, wrote %d bytes, request for %d bytes.\n", tot_trans, current_command->underflow);
449 }
450 break;
451 }
452
453 case PHASE_DATA_IN:
454 {
455 if(int_reg & BS)
456 {
457 current_command->SCp.phase = data_in;
458 outb(FLUSH_FIFO, base + COMMAND_REG);
459 sym53c416_set_transfer_counter(base, current_command->request_bufflen);
460 outb(TRANSFER_INFORMATION | PIO_MODE, base + COMMAND_REG);
461 if(!current_command->use_sg)
462 tot_trans = sym53c416_read(base, current_command->request_buffer, current_command->request_bufflen);
463 else
464 {
465 sgcount = current_command->use_sg;
466 sglist = current_command->request_buffer;
467 while(sgcount--)
468 {
469 tot_trans += sym53c416_read(base, SG_ADDRESS(sglist), sglist->length);
470 sglist++;
471 }
472 }
473 if(tot_trans < current_command->underflow)
474 printk(KERN_WARNING "sym53c416: Underflow, read %d bytes, request for %d bytes.\n", tot_trans, current_command->underflow);
475 }
476 break;
477 }
478
479 case PHASE_COMMAND:
480 {
481 current_command->SCp.phase = command_ph;
482 printk(KERN_ERR "sym53c416: Unknown interrupt in command phase.\n");
483 break;
484 }
485
486 case PHASE_STATUS:
487 {
488 current_command->SCp.phase = status_ph;
489 outb(FLUSH_FIFO, base + COMMAND_REG);
490 outb(INIT_COMM_COMPLETE_SEQ, base + COMMAND_REG);
491 break;
492 }
493
494 case PHASE_RESERVED_1:
495 case PHASE_RESERVED_2:
496 {
497 printk(KERN_ERR "sym53c416: Reserved phase occurred.\n");
498 break;
499 }
500
501 case PHASE_MESSAGE_OUT:
502 {
503 current_command->SCp.phase = message_out;
504 outb(SET_ATN, base + COMMAND_REG);
505 outb(MSG_ACCEPTED, base + COMMAND_REG);
506 break;
507 }
508
509 case PHASE_MESSAGE_IN:
510 {
511 current_command->SCp.phase = message_in;
512 current_command->SCp.Status = inb(base + SCSI_FIFO);
513 current_command->SCp.Message = inb(base + SCSI_FIFO);
514 if(current_command->SCp.Message == SAVE_POINTERS || current_command->SCp.Message == DISCONNECT)
515 outb(SET_ATN, base + COMMAND_REG);
516 outb(MSG_ACCEPTED, base + COMMAND_REG);
517 break;
518 }
519 }
520 out:
521 return IRQ_HANDLED;
522 }
523
524 static void sym53c416_init(int base, int scsi_id)
525 {
526 outb(RESET_CHIP, base + COMMAND_REG);
527 outb(NOOP, base + COMMAND_REG);
528 outb(0x99, base + TOM); /* Time out of 250 ms */
529 outb(0x05, base + STP);
530 outb(0x00, base + SYNC_OFFSET);
531 outb(EPC | scsi_id, base + CONF_REG_1);
532 outb(FE | SCSI2 | TBPA, base + CONF_REG_2);
533 outb(IDMRC | QTE | CDB10 | FSCSI | FCLK, base + CONF_REG_3);
534 outb(0x83 | EAN, base + CONF_REG_4);
535 outb(IE | WSE0, base + CONF_REG_5);
536 outb(0, base + FEATURE_EN);
537 }
538
539 static int sym53c416_probeirq(int base, int scsi_id)
540 {
541 int irq, irqs;
542 unsigned long i;
543
544 /* Clear interrupt register */
545 inb(base + INT_REG);
546 /* Start probing for irq's */
547 irqs = probe_irq_on();
548 /* Reinit chip */
549 sym53c416_init(base, scsi_id);
550 /* Cause interrupt */
551 outb(NOOP, base + COMMAND_REG);
552 outb(ILLEGAL, base + COMMAND_REG);
553 outb(0x07, base + DEST_BUS_ID);
554 outb(0x00, base + DEST_BUS_ID);
555 /* Wait for interrupt to occur */
556 i = jiffies + 20;
557 while(time_before(jiffies, i) && !(inb(base + STATUS_REG) & SCI))
558 barrier();
559 if(time_before_eq(i, jiffies)) /* timed out */
560 return 0;
561 /* Get occurred irq */
562 irq = probe_irq_off(irqs);
563 sym53c416_init(base, scsi_id);
564 return irq;
565 }
566
567 /* Setup: sym53c416=base,irq */
568 void sym53c416_setup(char *str, int *ints)
569 {
570 int i;
571
572 if(host_index >= MAXHOSTS)
573 {
574 printk(KERN_WARNING "sym53c416: Too many hosts defined\n");
575 return;
576 }
577 if(ints[0] < 1 || ints[0] > 2)
578 {
579 printk(KERN_ERR "sym53c416: Wrong number of parameters:\n");
580 printk(KERN_ERR "sym53c416: usage: sym53c416=<base>[,<irq>]\n");
581 return;
582 }
583 for(i = 0; i < host_index && i >= 0; i++)
584 if(hosts[i].base == ints[1])
585 i = -2;
586 if(i >= 0)
587 {
588 hosts[host_index].base = ints[1];
589 hosts[host_index].irq = (ints[0] == 2)? ints[2] : 0;
590 host_index++;
591 }
592 }
593
594 static int sym53c416_test(int base)
595 {
596 outb(RESET_CHIP, base + COMMAND_REG);
597 outb(NOOP, base + COMMAND_REG);
598 if(inb(base + COMMAND_REG) != NOOP)
599 return 0;
600 if(!inb(base + TC_HIGH) || inb(base + TC_HIGH) == 0xFF)
601 return 0;
602 if((inb(base + PIO_INT_REG) & (FULL | EMPTY | CE | OUE | FIE | EIE)) != EMPTY)
603 return 0;
604 return 1;
605 }
606
607
608 static struct isapnp_device_id id_table[] __devinitdata = {
609 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
610 ISAPNP_VENDOR('S','L','I'), ISAPNP_FUNCTION(0x4161), 0 },
611 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
612 ISAPNP_VENDOR('S','L','I'), ISAPNP_FUNCTION(0x4163), 0 },
613 { ISAPNP_DEVICE_SINGLE_END }
614 };
615
616 MODULE_DEVICE_TABLE(isapnp, id_table);
617
618 static void sym53c416_probe(void)
619 {
620 int *base = probeaddrs;
621 int ints[2];
622
623 ints[0] = 1;
624 for(; *base; base++) {
625 if (request_region(*base, IO_RANGE, ID)) {
626 if (sym53c416_test(*base)) {
627 ints[1] = *base;
628 sym53c416_setup(NULL, ints);
629 }
630 release_region(*base, IO_RANGE);
631 }
632 }
633 }
634
635 int __init sym53c416_detect(struct scsi_host_template *tpnt)
636 {
637 unsigned long flags;
638 struct Scsi_Host * shpnt = NULL;
639 int i;
640 int count;
641 struct pnp_dev *idev = NULL;
642
643 #ifdef MODULE
644 int ints[3];
645
646 ints[0] = 2;
647 if(sym53c416_base)
648 {
649 ints[1] = sym53c416_base[0];
650 ints[2] = sym53c416_base[1];
651 sym53c416_setup(NULL, ints);
652 }
653 if(sym53c416_base_1)
654 {
655 ints[1] = sym53c416_base_1[0];
656 ints[2] = sym53c416_base_1[1];
657 sym53c416_setup(NULL, ints);
658 }
659 if(sym53c416_base_2)
660 {
661 ints[1] = sym53c416_base_2[0];
662 ints[2] = sym53c416_base_2[1];
663 sym53c416_setup(NULL, ints);
664 }
665 if(sym53c416_base_3)
666 {
667 ints[1] = sym53c416_base_3[0];
668 ints[2] = sym53c416_base_3[1];
669 sym53c416_setup(NULL, ints);
670 }
671 #endif
672 printk(KERN_INFO "sym53c416.c: %s\n", VERSION_STRING);
673
674 for (i=0; id_table[i].vendor != 0; i++) {
675 while((idev=pnp_find_dev(NULL, id_table[i].vendor,
676 id_table[i].function, idev))!=NULL)
677 {
678 int i[3];
679
680 if(pnp_device_attach(idev)<0)
681 {
682 printk(KERN_WARNING "sym53c416: unable to attach PnP device.\n");
683 continue;
684 }
685 if(pnp_activate_dev(idev) < 0)
686 {
687 printk(KERN_WARNING "sym53c416: unable to activate PnP device.\n");
688 pnp_device_detach(idev);
689 continue;
690
691 }
692
693 i[0] = 2;
694 i[1] = pnp_port_start(idev, 0);
695 i[2] = pnp_irq(idev, 0);
696
697 printk(KERN_INFO "sym53c416: ISAPnP card found and configured at 0x%X, IRQ %d.\n",
698 i[1], i[2]);
699 sym53c416_setup(NULL, i);
700 }
701 }
702 sym53c416_probe();
703
704 /* Now we register and set up each host adapter found... */
705 for(count = 0, i = 0; i < host_index; i++) {
706 if (!request_region(hosts[i].base, IO_RANGE, ID))
707 continue;
708 if (!sym53c416_test(hosts[i].base)) {
709 printk(KERN_WARNING "No sym53c416 found at address 0x%03x\n", hosts[i].base);
710 goto fail_release_region;
711 }
712
713 /* We don't have an irq yet, so we should probe for one */
714 if (!hosts[i].irq)
715 hosts[i].irq = sym53c416_probeirq(hosts[i].base, hosts[i].scsi_id);
716 if (!hosts[i].irq)
717 goto fail_release_region;
718
719 shpnt = scsi_register(tpnt, 0);
720 if (!shpnt)
721 goto fail_release_region;
722 /* Request for specified IRQ */
723 if (request_irq(hosts[i].irq, sym53c416_intr_handle, 0, ID, shpnt))
724 goto fail_free_host;
725
726 spin_lock_irqsave(&sym53c416_lock, flags);
727 shpnt->unique_id = hosts[i].base;
728 shpnt->io_port = hosts[i].base;
729 shpnt->n_io_port = IO_RANGE;
730 shpnt->irq = hosts[i].irq;
731 shpnt->this_id = hosts[i].scsi_id;
732 sym53c416_init(hosts[i].base, hosts[i].scsi_id);
733 count++;
734 spin_unlock_irqrestore(&sym53c416_lock, flags);
735 continue;
736
737 fail_free_host:
738 scsi_unregister(shpnt);
739 fail_release_region:
740 release_region(hosts[i].base, IO_RANGE);
741 }
742 return count;
743 }
744
745 const char *sym53c416_info(struct Scsi_Host *SChost)
746 {
747 int i;
748 int base = SChost->io_port;
749 int irq = SChost->irq;
750 int scsi_id = 0;
751 int rev = inb(base + TC_HIGH);
752
753 for(i = 0; i < host_index; i++)
754 if(hosts[i].base == base)
755 scsi_id = hosts[i].scsi_id;
756 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");
757 return info;
758 }
759
760 int sym53c416_queuecommand(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
761 {
762 int base;
763 unsigned long flags = 0;
764 int i;
765
766 /* Store base register as we can have more than one controller in the system */
767 base = SCpnt->device->host->io_port;
768 current_command = SCpnt; /* set current command */
769 current_command->scsi_done = done; /* set ptr to done function */
770 current_command->SCp.phase = command_ph; /* currect phase is the command phase */
771 current_command->SCp.Status = 0;
772 current_command->SCp.Message = 0;
773
774 spin_lock_irqsave(&sym53c416_lock, flags);
775 outb(scmd_id(SCpnt), base + DEST_BUS_ID); /* Set scsi id target */
776 outb(FLUSH_FIFO, base + COMMAND_REG); /* Flush SCSI and PIO FIFO's */
777 /* Write SCSI command into the SCSI fifo */
778 for(i = 0; i < SCpnt->cmd_len; i++)
779 outb(SCpnt->cmnd[i], base + SCSI_FIFO);
780 /* Start selection sequence */
781 outb(SEL_WITHOUT_ATN_SEQ, base + COMMAND_REG);
782 /* Now an interrupt will be generated which we will catch in out interrupt routine */
783 spin_unlock_irqrestore(&sym53c416_lock, flags);
784 return 0;
785 }
786
787 static int sym53c416_host_reset(Scsi_Cmnd *SCpnt)
788 {
789 int base;
790 int scsi_id = -1;
791 int i;
792 unsigned long flags;
793
794 spin_lock_irqsave(&sym53c416_lock, flags);
795
796 /* printk("sym53c416_reset\n"); */
797 base = SCpnt->device->host->io_port;
798 /* search scsi_id - fixme, we shouldnt need to iterate for this! */
799 for(i = 0; i < host_index && scsi_id == -1; i++)
800 if(hosts[i].base == base)
801 scsi_id = hosts[i].scsi_id;
802 outb(RESET_CHIP, base + COMMAND_REG);
803 outb(NOOP | PIO_MODE, base + COMMAND_REG);
804 outb(RESET_SCSI_BUS, base + COMMAND_REG);
805 sym53c416_init(base, scsi_id);
806
807 spin_unlock_irqrestore(&sym53c416_lock, flags);
808 return SUCCESS;
809 }
810
811 static int sym53c416_release(struct Scsi_Host *shost)
812 {
813 if (shost->irq)
814 free_irq(shost->irq, shost);
815 if (shost->io_port && shost->n_io_port)
816 release_region(shost->io_port, shost->n_io_port);
817 return 0;
818 }
819
820 static int sym53c416_bios_param(struct scsi_device *sdev,
821 struct block_device *dev,
822 sector_t capacity, int *ip)
823 {
824 int size;
825
826 size = capacity;
827 ip[0] = 64; /* heads */
828 ip[1] = 32; /* sectors */
829 if((ip[2] = size >> 11) > 1024) /* cylinders, test for big disk */
830 {
831 ip[0] = 255; /* heads */
832 ip[1] = 63; /* sectors */
833 ip[2] = size / (255 * 63); /* cylinders */
834 }
835 return 0;
836 }
837
838 /* Loadable module support */
839 #ifdef MODULE
840
841 MODULE_AUTHOR("Lieven Willems");
842 MODULE_LICENSE("GPL");
843
844 module_param_array(sym53c416, uint, NULL, 0);
845 module_param_array(sym53c416_1, uint, NULL, 0);
846 module_param_array(sym53c416_2, uint, NULL, 0);
847 module_param_array(sym53c416_3, uint, NULL, 0);
848
849 #endif
850
851 static struct scsi_host_template driver_template = {
852 .proc_name = "sym53c416",
853 .name = "Symbios Logic 53c416",
854 .detect = sym53c416_detect,
855 .info = sym53c416_info,
856 .queuecommand = sym53c416_queuecommand,
857 .eh_host_reset_handler =sym53c416_host_reset,
858 .release = sym53c416_release,
859 .bios_param = sym53c416_bios_param,
860 .can_queue = 1,
861 .this_id = SYM53C416_SCSI_ID,
862 .sg_tablesize = 32,
863 .cmd_per_lun = 1,
864 .unchecked_isa_dma = 1,
865 .use_clustering = ENABLE_CLUSTERING,
866 };
867 #include "scsi_module.c"
kernel source for telekom puls (alcatel/mediatek)