This source file includes following definitions.
- t128_detect
- t128_biosparam
- NCR5380_pread
- NCR5380_pwrite
1 #define AUTOSENSE
2 #define PSEUDO_DMA
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109 #include <asm/system.h>
110 #include <linux/signal.h>
111 #include <linux/sched.h>
112 #include "../block/blk.h"
113 #include "scsi.h"
114 #include "hosts.h"
115 #include "t128.h"
116 #define AUTOPROBE_IRQ
117 #include "NCR5380.h"
118 #include "constants.h"
119 #include "sd.h"
120 #include<linux/stat.h>
121
122 struct proc_dir_entry proc_scsi_t128 = {
123 PROC_SCSI_T128, 4, "t128",
124 S_IFDIR | S_IRUGO | S_IXUGO, 2
125 };
126
127
128 static struct override {
129 unsigned char *address;
130 int irq;
131 } overrides
132 #ifdef T128_OVERRIDE
133 [] = T128_OVERRIDE;
134 #else
135 [4] = {{NULL,IRQ_AUTO}, {NULL,IRQ_AUTO}, {NULL,IRQ_AUTO},
136 {NULL,IRQ_AUTO}};
137 #endif
138
139 #define NO_OVERRIDES (sizeof(overrides) / sizeof(struct override))
140
141 static struct base {
142 unsigned char *address;
143 int noauto;
144 } bases[] = {{(unsigned char *) 0xcc000, 0}, {(unsigned char *) 0xc8000, 0},
145 {(unsigned char *) 0xdc000, 0}, {(unsigned char *) 0xd8000, 0}};
146
147 #define NO_BASES (sizeof (bases) / sizeof (struct base))
148
149 static const struct signature {
150 const char *string;
151 int offset;
152 } signatures[] = {
153 {"TSROM: SCSI BIOS, Version 1.12", 0x36},
154 };
155
156 #define NO_SIGNATURES (sizeof (signatures) / sizeof (struct signature))
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168 void t128_setup(char *str, int *ints) {
169 static int commandline_current = 0;
170 int i;
171 if (ints[0] != 2)
172 printk("t128_setup : usage t128=address,irq\n");
173 else
174 if (commandline_current < NO_OVERRIDES) {
175 overrides[commandline_current].address = (unsigned char *) ints[1];
176 overrides[commandline_current].irq = ints[2];
177 for (i = 0; i < NO_BASES; ++i)
178 if (bases[i].address == (unsigned char *) ints[1]) {
179 bases[i].noauto = 1;
180 break;
181 }
182 ++commandline_current;
183 }
184 }
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199 int t128_detect(Scsi_Host_Template * tpnt) {
200 static int current_override = 0, current_base = 0;
201 struct Scsi_Host *instance;
202 unsigned char *base;
203 int sig, count;
204
205 tpnt->proc_dir = &proc_scsi_t128;
206
207 for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
208 base = NULL;
209
210 if (overrides[current_override].address)
211 base = overrides[current_override].address;
212 else
213 for (; !base && (current_base < NO_BASES); ++current_base) {
214 #if (TDEBUG & TDEBUG_INIT)
215 printk("scsi : probing address %08x\n", (unsigned int) bases[current_base].address);
216 #endif
217 for (sig = 0; sig < NO_SIGNATURES; ++sig)
218 if (!bases[current_base].noauto && !memcmp
219 (bases[current_base].address + signatures[sig].offset,
220 signatures[sig].string, strlen(signatures[sig].string))) {
221 base = bases[current_base].address;
222 #if (TDEBUG & TDEBUG_INIT)
223 printk("scsi-t128 : detected board.\n");
224 #endif
225 break;
226 }
227 }
228
229 #if defined(TDEBUG) && (TDEBUG & TDEBUG_INIT)
230 printk("scsi-t128 : base = %08x\n", (unsigned int) base);
231 #endif
232
233 if (!base)
234 break;
235
236 instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata));
237 instance->base = base;
238
239 NCR5380_init(instance, 0);
240
241 if (overrides[current_override].irq != IRQ_AUTO)
242 instance->irq = overrides[current_override].irq;
243 else
244 instance->irq = NCR5380_probe_irq(instance, T128_IRQS);
245
246 if (instance->irq != IRQ_NONE)
247 if (request_irq(instance->irq, t128_intr, SA_INTERRUPT, "t128")) {
248 printk("scsi%d : IRQ%d not free, interrupts disabled\n",
249 instance->host_no, instance->irq);
250 instance->irq = IRQ_NONE;
251 }
252
253 if (instance->irq == IRQ_NONE) {
254 printk("scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
255 printk("scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
256 }
257
258 #if defined(TDEBUG) && (TDEBUG & TDEBUG_INIT)
259 printk("scsi%d : irq = %d\n", instance->host_no, instance->irq);
260 #endif
261
262 printk("scsi%d : at 0x%08x", instance->host_no, (int)
263 instance->base);
264 if (instance->irq == IRQ_NONE)
265 printk (" interrupts disabled");
266 else
267 printk (" irq %d", instance->irq);
268 printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
269 CAN_QUEUE, CMD_PER_LUN, T128_PUBLIC_RELEASE);
270 NCR5380_print_options(instance);
271 printk("\n");
272
273 ++current_override;
274 ++count;
275 }
276 return count;
277 }
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299 int t128_biosparam(Disk * disk, kdev_t dev, int * ip)
300 {
301 int size = disk->capacity;
302 ip[0] = 64;
303 ip[1] = 32;
304 ip[2] = size >> 11;
305 return 0;
306 }
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321 static inline int NCR5380_pread (struct Scsi_Host *instance, unsigned char *dst,
322 int len) {
323 register unsigned char *reg = (unsigned char *) (instance->base +
324 T_DATA_REG_OFFSET), *d = dst;
325 register i = len;
326
327
328 #if 0
329 for (; i; --i) {
330 while (!(instance->base[T_STATUS_REG_OFFSET]) & T_ST_RDY) barrier();
331 #else
332 while (!(instance->base[T_STATUS_REG_OFFSET]) & T_ST_RDY) barrier();
333 for (; i; --i) {
334 #endif
335 *d++ = *reg;
336 }
337
338 if (*(instance->base + T_STATUS_REG_OFFSET) & T_ST_TIM) {
339 unsigned char tmp;
340 volatile unsigned char *foo;
341 foo = instance->base + T_CONTROL_REG_OFFSET;
342 tmp = *foo;
343 *foo = tmp | T_CR_CT;
344 *foo = tmp;
345 printk("scsi%d : watchdog timer fired in NCR5380_pread()\n",
346 instance->host_no);
347 return -1;
348 } else
349 return 0;
350 }
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365 static inline int NCR5380_pwrite (struct Scsi_Host *instance, unsigned char *src,
366 int len) {
367 register unsigned char *reg = (unsigned char *) (instance->base +
368 T_DATA_REG_OFFSET), *s = src;
369 register i = len;
370
371 #if 0
372 for (; i; --i) {
373 while (!(instance->base[T_STATUS_REG_OFFSET]) & T_ST_RDY) barrier();
374 #else
375 while (!(instance->base[T_STATUS_REG_OFFSET]) & T_ST_RDY) barrier();
376 for (; i; --i) {
377 #endif
378 *reg = *s++;
379 }
380
381 if (*(instance->base + T_STATUS_REG_OFFSET) & T_ST_TIM) {
382 unsigned char tmp;
383 volatile unsigned char *foo;
384 foo = instance->base + T_CONTROL_REG_OFFSET;
385 tmp = *foo;
386 *foo = tmp | T_CR_CT;
387 *foo = tmp;
388 printk("scsi%d : watchdog timer fired in NCR5380_pwrite()\n",
389 instance->host_no);
390 return -1;
391 } else
392 return 0;
393 }
394
395 #include "NCR5380.c"