1#define PSEUDO_DMA
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70#include <linux/module.h>
71
72#include <asm/io.h>
73#include <asm/dma.h>
74#include <linux/blkdev.h>
75#include <linux/interrupt.h>
76#include <linux/init.h>
77
78#include <scsi/scsi_host.h>
79#include "pas16.h"
80#define AUTOPROBE_IRQ
81#include "NCR5380.h"
82
83
84static unsigned short pas16_addr;
85static int pas16_irq;
86
87
88static const int scsi_irq_translate[] =
89 { 0, 0, 1, 2, 3, 4, 5, 6, 0, 0, 7, 8, 9, 0, 10, 11 };
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95
96static int default_irqs[] __initdata =
97 { PAS16_DEFAULT_BOARD_1_IRQ,
98 PAS16_DEFAULT_BOARD_2_IRQ,
99 PAS16_DEFAULT_BOARD_3_IRQ,
100 PAS16_DEFAULT_BOARD_4_IRQ
101 };
102
103static struct override {
104 unsigned short io_port;
105 int irq;
106} overrides
107#ifdef PAS16_OVERRIDE
108 [] __initdata = PAS16_OVERRIDE;
109#else
110 [4] __initdata = {{0,IRQ_AUTO}, {0,IRQ_AUTO}, {0,IRQ_AUTO},
111 {0,IRQ_AUTO}};
112#endif
113
114#define NO_OVERRIDES ARRAY_SIZE(overrides)
115
116static struct base {
117 unsigned short io_port;
118 int noauto;
119} bases[] __initdata =
120 { {PAS16_DEFAULT_BASE_1, 0},
121 {PAS16_DEFAULT_BASE_2, 0},
122 {PAS16_DEFAULT_BASE_3, 0},
123 {PAS16_DEFAULT_BASE_4, 0}
124 };
125
126#define NO_BASES ARRAY_SIZE(bases)
127
128static const unsigned short pas16_offset[ 8 ] =
129 {
130 0x1c00,
131 0x1c01,
132 0x1c02,
133 0x1c03,
134 0x3c00,
135 0x3c01,
136 0x3c02,
137
138
139 0x3c03,
140
141
142 };
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154static void __init
155 enable_board( int board_num, unsigned short port )
156{
157 outb( 0xbc + board_num, MASTER_ADDRESS_PTR );
158 outb( port >> 2, MASTER_ADDRESS_PTR );
159}
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174static void __init
175 init_board( unsigned short io_port, int irq, int force_irq )
176{
177 unsigned int tmp;
178 unsigned int pas_irq_code;
179
180
181
182 outb( 0x30, io_port + P_TIMEOUT_COUNTER_REG );
183 outb( 0x01, io_port + P_TIMEOUT_STATUS_REG_OFFSET );
184 outb( 0x01, io_port + WAIT_STATE );
185
186 inb(io_port + pas16_offset[RESET_PARITY_INTERRUPT_REG]);
187
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190
191 pas_irq_code = ( irq < 16 ) ? scsi_irq_translate[irq] : 0;
192 tmp = inb( io_port + IO_CONFIG_3 );
193
194 if( (( tmp & 0x0f ) == pas_irq_code) && pas_irq_code > 0
195 && !force_irq )
196 {
197 printk( "pas16: WARNING: Can't use same irq as sound "
198 "driver -- interrupts disabled\n" );
199
200 outb( 0x4d, io_port + SYS_CONFIG_4 );
201 }
202 else
203 {
204 tmp = ( tmp & 0x0f ) | ( pas_irq_code << 4 );
205 outb( tmp, io_port + IO_CONFIG_3 );
206
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208 outb( 0x6d, io_port + SYS_CONFIG_4 );
209 }
210}
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223static int __init
224 pas16_hw_detect( unsigned short board_num )
225{
226 unsigned char board_rev, tmp;
227 unsigned short io_port = bases[ board_num ].io_port;
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236 enable_board( board_num, io_port );
237
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239 board_rev = inb( io_port + PCB_CONFIG );
240
241 if( board_rev == 0xff )
242 return 0;
243
244 tmp = board_rev ^ 0xe0;
245
246 outb( tmp, io_port + PCB_CONFIG );
247 tmp = inb( io_port + PCB_CONFIG );
248 outb( board_rev, io_port + PCB_CONFIG );
249
250 if( board_rev != tmp )
251 return 0;
252
253 if( ( inb( io_port + OPERATION_MODE_1 ) & 0x03 ) != 0x03 )
254 return 0;
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260
261 outb(0x01, io_port + WAIT_STATE);
262 outb(0x20, io_port + pas16_offset[MODE_REG]);
263 if (inb(io_port + pas16_offset[MODE_REG]) != 0x20)
264 return 0;
265 outb(0x00, io_port + pas16_offset[MODE_REG]);
266 if (inb(io_port + pas16_offset[MODE_REG]) != 0x00)
267 return 0;
268
269 return 1;
270}
271
272
273#ifndef MODULE
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283
284static int __init pas16_setup(char *str)
285{
286 static int commandline_current;
287 int i;
288 int ints[10];
289
290 get_options(str, ARRAY_SIZE(ints), ints);
291 if (ints[0] != 2)
292 printk("pas16_setup : usage pas16=io_port,irq\n");
293 else
294 if (commandline_current < NO_OVERRIDES) {
295 overrides[commandline_current].io_port = (unsigned short) ints[1];
296 overrides[commandline_current].irq = ints[2];
297 for (i = 0; i < NO_BASES; ++i)
298 if (bases[i].io_port == (unsigned short) ints[1]) {
299 bases[i].noauto = 1;
300 break;
301 }
302 ++commandline_current;
303 }
304 return 1;
305}
306
307__setup("pas16=", pas16_setup);
308#endif
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323static int __init pas16_detect(struct scsi_host_template *tpnt)
324{
325 static int current_override;
326 static unsigned short current_base;
327 struct Scsi_Host *instance;
328 unsigned short io_port;
329 int count;
330
331 if (pas16_addr != 0) {
332 overrides[0].io_port = pas16_addr;
333
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335
336
337
338 for (count = 0; count < NO_BASES; ++count)
339 if (bases[count].io_port == pas16_addr) {
340 bases[count].noauto = 1;
341 break;
342 }
343 }
344 if (pas16_irq != 0)
345 overrides[0].irq = pas16_irq;
346
347 for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
348 io_port = 0;
349
350 if (overrides[current_override].io_port)
351 {
352 io_port = overrides[current_override].io_port;
353 enable_board( current_override, io_port );
354 init_board( io_port, overrides[current_override].irq, 1 );
355 }
356 else
357 for (; !io_port && (current_base < NO_BASES); ++current_base) {
358 dprintk(NDEBUG_INIT, "pas16: probing io_port 0x%04x\n",
359 (unsigned int)bases[current_base].io_port);
360 if ( !bases[current_base].noauto &&
361 pas16_hw_detect( current_base ) ){
362 io_port = bases[current_base].io_port;
363 init_board( io_port, default_irqs[ current_base ], 0 );
364 dprintk(NDEBUG_INIT, "pas16: detected board\n");
365 }
366 }
367
368 dprintk(NDEBUG_INIT, "pas16: io_port = 0x%04x\n",
369 (unsigned int)io_port);
370
371 if (!io_port)
372 break;
373
374 instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata));
375 if(instance == NULL)
376 goto out;
377
378 instance->io_port = io_port;
379
380 if (NCR5380_init(instance, 0))
381 goto out_unregister;
382
383 NCR5380_maybe_reset_bus(instance);
384
385 if (overrides[current_override].irq != IRQ_AUTO)
386 instance->irq = overrides[current_override].irq;
387 else
388 instance->irq = NCR5380_probe_irq(instance, PAS16_IRQS);
389
390
391 if (instance->irq == 255)
392 instance->irq = NO_IRQ;
393
394 if (instance->irq != NO_IRQ)
395 if (request_irq(instance->irq, pas16_intr, 0,
396 "pas16", instance)) {
397 printk("scsi%d : IRQ%d not free, interrupts disabled\n",
398 instance->host_no, instance->irq);
399 instance->irq = NO_IRQ;
400 }
401
402 if (instance->irq == NO_IRQ) {
403 printk("scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
404 printk("scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
405
406 outb( 0x4d, io_port + SYS_CONFIG_4 );
407 outb( (inb(io_port + IO_CONFIG_3) & 0x0f), io_port + IO_CONFIG_3 );
408 }
409
410 dprintk(NDEBUG_INIT, "scsi%d : irq = %d\n",
411 instance->host_no, instance->irq);
412
413 ++current_override;
414 ++count;
415 }
416 return count;
417
418out_unregister:
419 scsi_unregister(instance);
420out:
421 return count;
422}
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444static int pas16_biosparam(struct scsi_device *sdev, struct block_device *dev,
445 sector_t capacity, int *ip)
446{
447 int size = capacity;
448 ip[0] = 64;
449 ip[1] = 32;
450 ip[2] = size >> 11;
451 if( ip[2] > 1024 ) {
452 ip[0]=255;
453 ip[1]=63;
454 ip[2]=size/(63*255);
455 if( ip[2] > 1023 )
456 ip[2] = 1023;
457 }
458
459 return 0;
460}
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475static inline int NCR5380_pread (struct Scsi_Host *instance, unsigned char *dst,
476 int len) {
477 register unsigned char *d = dst;
478 register unsigned short reg = (unsigned short) (instance->io_port +
479 P_DATA_REG_OFFSET);
480 register int i = len;
481 int ii = 0;
482 struct NCR5380_hostdata *hostdata = shost_priv(instance);
483
484 while ( !(inb(instance->io_port + P_STATUS_REG_OFFSET) & P_ST_RDY) )
485 ++ii;
486
487 insb( reg, d, i );
488
489 if ( inb(instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET) & P_TS_TIM) {
490 outb( P_TS_CT, instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET);
491 printk("scsi%d : watchdog timer fired in NCR5380_pread()\n",
492 instance->host_no);
493 return -1;
494 }
495 if (ii > hostdata->spin_max_r)
496 hostdata->spin_max_r = ii;
497 return 0;
498}
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513static inline int NCR5380_pwrite (struct Scsi_Host *instance, unsigned char *src,
514 int len) {
515 register unsigned char *s = src;
516 register unsigned short reg = (instance->io_port + P_DATA_REG_OFFSET);
517 register int i = len;
518 int ii = 0;
519 struct NCR5380_hostdata *hostdata = shost_priv(instance);
520
521 while ( !((inb(instance->io_port + P_STATUS_REG_OFFSET)) & P_ST_RDY) )
522 ++ii;
523
524 outsb( reg, s, i );
525
526 if (inb(instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET) & P_TS_TIM) {
527 outb( P_TS_CT, instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET);
528 printk("scsi%d : watchdog timer fired in NCR5380_pwrite()\n",
529 instance->host_no);
530 return -1;
531 }
532 if (ii > hostdata->spin_max_w)
533 hostdata->spin_max_w = ii;
534 return 0;
535}
536
537#include "NCR5380.c"
538
539static int pas16_release(struct Scsi_Host *shost)
540{
541 if (shost->irq != NO_IRQ)
542 free_irq(shost->irq, shost);
543 NCR5380_exit(shost);
544 scsi_unregister(shost);
545 return 0;
546}
547
548static struct scsi_host_template driver_template = {
549 .name = "Pro Audio Spectrum-16 SCSI",
550 .detect = pas16_detect,
551 .release = pas16_release,
552 .proc_name = "pas16",
553 .show_info = pas16_show_info,
554 .write_info = pas16_write_info,
555 .info = pas16_info,
556 .queuecommand = pas16_queue_command,
557 .eh_abort_handler = pas16_abort,
558 .eh_bus_reset_handler = pas16_bus_reset,
559 .bios_param = pas16_biosparam,
560 .can_queue = 32,
561 .this_id = 7,
562 .sg_tablesize = SG_ALL,
563 .cmd_per_lun = 2,
564 .use_clustering = DISABLE_CLUSTERING,
565 .cmd_size = NCR5380_CMD_SIZE,
566 .max_sectors = 128,
567};
568#include "scsi_module.c"
569
570#ifdef MODULE
571module_param(pas16_addr, ushort, 0);
572module_param(pas16_irq, int, 0);
573#endif
574MODULE_LICENSE("GPL");
575