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[hh.org.git] / arch / i386 / mach-voyager / voyager_cat.c
blobf50c6c6ad680e8eb7c2092757d18291fa3e68ab6
1 /* -*- mode: c; c-basic-offset: 8 -*- */
2
3 /* Copyright (C) 1999,2001
4 *
5 * Author: J.E.J.Bottomley@HansenPartnership.com
6 *
7 * linux/arch/i386/kernel/voyager_cat.c
8 *
9 * This file contains all the logic for manipulating the CAT bus
10 * in a level 5 machine.
11 *
12 * The CAT bus is a serial configuration and test bus. Its primary
13 * uses are to probe the initial configuration of the system and to
14 * diagnose error conditions when a system interrupt occurs. The low
15 * level interface is fairly primitive, so most of this file consists
16 * of bit shift manipulations to send and receive packets on the
17 * serial bus */
18
19 #include <linux/types.h>
20 #include <linux/completion.h>
21 #include <linux/sched.h>
22 #include <asm/voyager.h>
23 #include <asm/vic.h>
24 #include <linux/ioport.h>
25 #include <linux/init.h>
26 #include <linux/slab.h>
27 #include <linux/delay.h>
28 #include <asm/io.h>
29
30 #ifdef VOYAGER_CAT_DEBUG
31 #define CDEBUG(x) printk x
32 #else
33 #define CDEBUG(x)
34 #endif
35
36 /* the CAT command port */
37 #define CAT_CMD (sspb + 0xe)
38 /* the CAT data port */
39 #define CAT_DATA (sspb + 0xd)
40
41 /* the internal cat functions */
42 static void cat_pack(__u8 *msg, __u16 start_bit, __u8 *data,
43 __u16 num_bits);
44 static void cat_unpack(__u8 *msg, __u16 start_bit, __u8 *data,
45 __u16 num_bits);
46 static void cat_build_header(__u8 *header, const __u16 len,
47 const __u16 smallest_reg_bits,
48 const __u16 longest_reg_bits);
49 static int cat_sendinst(voyager_module_t *modp, voyager_asic_t *asicp,
50 __u8 reg, __u8 op);
51 static int cat_getdata(voyager_module_t *modp, voyager_asic_t *asicp,
52 __u8 reg, __u8 *value);
53 static int cat_shiftout(__u8 *data, __u16 data_bytes, __u16 header_bytes,
54 __u8 pad_bits);
55 static int cat_write(voyager_module_t *modp, voyager_asic_t *asicp, __u8 reg,
56 __u8 value);
57 static int cat_read(voyager_module_t *modp, voyager_asic_t *asicp, __u8 reg,
58 __u8 *value);
59 static int cat_subread(voyager_module_t *modp, voyager_asic_t *asicp,
60 __u16 offset, __u16 len, void *buf);
61 static int cat_senddata(voyager_module_t *modp, voyager_asic_t *asicp,
62 __u8 reg, __u8 value);
63 static int cat_disconnect(voyager_module_t *modp, voyager_asic_t *asicp);
64 static int cat_connect(voyager_module_t *modp, voyager_asic_t *asicp);
65
66 static inline const char *
67 cat_module_name(int module_id)
68 {
69 switch(module_id) {
70 case 0x10:
71 return "Processor Slot 0";
72 case 0x11:
73 return "Processor Slot 1";
74 case 0x12:
75 return "Processor Slot 2";
76 case 0x13:
77 return "Processor Slot 4";
78 case 0x14:
79 return "Memory Slot 0";
80 case 0x15:
81 return "Memory Slot 1";
82 case 0x18:
83 return "Primary Microchannel";
84 case 0x19:
85 return "Secondary Microchannel";
86 case 0x1a:
87 return "Power Supply Interface";
88 case 0x1c:
89 return "Processor Slot 5";
90 case 0x1d:
91 return "Processor Slot 6";
92 case 0x1e:
93 return "Processor Slot 7";
94 case 0x1f:
95 return "Processor Slot 8";
96 default:
97 return "Unknown Module";
98 }
99 }
100
101 static int sspb = 0; /* stores the super port location */
102 int voyager_8slot = 0; /* set to true if a 51xx monster */
103
104 voyager_module_t *voyager_cat_list;
105
106 /* the I/O port assignments for the VIC and QIC */
107 static struct resource vic_res = {
108 .name = "Voyager Interrupt Controller",
109 .start = 0xFC00,
110 .end = 0xFC6F
111 };
112 static struct resource qic_res = {
113 .name = "Quad Interrupt Controller",
114 .start = 0xFC70,
115 .end = 0xFCFF
116 };
117
118 /* This function is used to pack a data bit stream inside a message.
119 * It writes num_bits of the data buffer in msg starting at start_bit.
120 * Note: This function assumes that any unused bit in the data stream
121 * is set to zero so that the ors will work correctly */
122 static void
123 cat_pack(__u8 *msg, const __u16 start_bit, __u8 *data, const __u16 num_bits)
124 {
125 /* compute initial shift needed */
126 const __u16 offset = start_bit % BITS_PER_BYTE;
127 __u16 len = num_bits / BITS_PER_BYTE;
128 __u16 byte = start_bit / BITS_PER_BYTE;
129 __u16 residue = (num_bits % BITS_PER_BYTE) + offset;
130 int i;
131
132 /* adjust if we have more than a byte of residue */
133 if(residue >= BITS_PER_BYTE) {
134 residue -= BITS_PER_BYTE;
135 len++;
136 }
137
138 /* clear out the bits. We assume here that if len==0 then
139 * residue >= offset. This is always true for the catbus
140 * operations */
141 msg[byte] &= 0xff << (BITS_PER_BYTE - offset);
142 msg[byte++] |= data[0] >> offset;
143 if(len == 0)
144 return;
145 for(i = 1; i < len; i++)
146 msg[byte++] = (data[i-1] << (BITS_PER_BYTE - offset))
147 | (data[i] >> offset);
148 if(residue != 0) {
149 __u8 mask = 0xff >> residue;
150 __u8 last_byte = data[i-1] << (BITS_PER_BYTE - offset)
151 | (data[i] >> offset);
152
153 last_byte &= ~mask;
154 msg[byte] &= mask;
155 msg[byte] |= last_byte;
156 }
157 return;
158 }
159 /* unpack the data again (same arguments as cat_pack()). data buffer
160 * must be zero populated.
161 *
162 * Function: given a message string move to start_bit and copy num_bits into
163 * data (starting at bit 0 in data).
164 */
165 static void
166 cat_unpack(__u8 *msg, const __u16 start_bit, __u8 *data, const __u16 num_bits)
167 {
168 /* compute initial shift needed */
169 const __u16 offset = start_bit % BITS_PER_BYTE;
170 __u16 len = num_bits / BITS_PER_BYTE;
171 const __u8 last_bits = num_bits % BITS_PER_BYTE;
172 __u16 byte = start_bit / BITS_PER_BYTE;
173 int i;
174
175 if(last_bits != 0)
176 len++;
177
178 /* special case: want < 8 bits from msg and we can get it from
179 * a single byte of the msg */
180 if(len == 0 && BITS_PER_BYTE - offset >= num_bits) {
181 data[0] = msg[byte] << offset;
182 data[0] &= 0xff >> (BITS_PER_BYTE - num_bits);
183 return;
184 }
185 for(i = 0; i < len; i++) {
186 /* this annoying if has to be done just in case a read of
187 * msg one beyond the array causes a panic */
188 if(offset != 0) {
189 data[i] = msg[byte++] << offset;
190 data[i] |= msg[byte] >> (BITS_PER_BYTE - offset);
191 }
192 else {
193 data[i] = msg[byte++];
194 }
195 }
196 /* do we need to truncate the final byte */
197 if(last_bits != 0) {
198 data[i-1] &= 0xff << (BITS_PER_BYTE - last_bits);
199 }
200 return;
201 }
202
203 static void
204 cat_build_header(__u8 *header, const __u16 len, const __u16 smallest_reg_bits,
205 const __u16 longest_reg_bits)
206 {
207 int i;
208 __u16 start_bit = (smallest_reg_bits - 1) % BITS_PER_BYTE;
209 __u8 *last_byte = &header[len - 1];
210
211 if(start_bit == 0)
212 start_bit = 1; /* must have at least one bit in the hdr */
213
214 for(i=0; i < len; i++)
215 header[i] = 0;
216
217 for(i = start_bit; i > 0; i--)
218 *last_byte = ((*last_byte) << 1) + 1;
219
220 }
221
222 static int
223 cat_sendinst(voyager_module_t *modp, voyager_asic_t *asicp, __u8 reg, __u8 op)
224 {
225 __u8 parity, inst, inst_buf[4] = { 0 };
226 __u8 iseq[VOYAGER_MAX_SCAN_PATH], hseq[VOYAGER_MAX_REG_SIZE];
227 __u16 ibytes, hbytes, padbits;
228 int i;
229
230 /*
231 * Parity is the parity of the register number + 1 (READ_REGISTER
232 * and WRITE_REGISTER always add '1' to the number of bits == 1)
233 */
234 parity = (__u8)(1 + (reg & 0x01) +
235 ((__u8)(reg & 0x02) >> 1) +
236 ((__u8)(reg & 0x04) >> 2) +
237 ((__u8)(reg & 0x08) >> 3)) % 2;
238
239 inst = ((parity << 7) | (reg << 2) | op);
240
241 outb(VOYAGER_CAT_IRCYC, CAT_CMD);
242 if(!modp->scan_path_connected) {
243 if(asicp->asic_id != VOYAGER_CAT_ID) {
244 printk("**WARNING***: cat_sendinst has disconnected scan path not to CAT asic\n");
245 return 1;
246 }
247 outb(VOYAGER_CAT_HEADER, CAT_DATA);
248 outb(inst, CAT_DATA);
249 if(inb(CAT_DATA) != VOYAGER_CAT_HEADER) {
250 CDEBUG(("VOYAGER CAT: cat_sendinst failed to get CAT_HEADER\n"));
251 return 1;
252 }
253 return 0;
254 }
255 ibytes = modp->inst_bits / BITS_PER_BYTE;
256 if((padbits = modp->inst_bits % BITS_PER_BYTE) != 0) {
257 padbits = BITS_PER_BYTE - padbits;
258 ibytes++;
259 }
260 hbytes = modp->largest_reg / BITS_PER_BYTE;
261 if(modp->largest_reg % BITS_PER_BYTE)
262 hbytes++;
263 CDEBUG(("cat_sendinst: ibytes=%d, hbytes=%d\n", ibytes, hbytes));
264 /* initialise the instruction sequence to 0xff */
265 for(i=0; i < ibytes + hbytes; i++)
266 iseq[i] = 0xff;
267 cat_build_header(hseq, hbytes, modp->smallest_reg, modp->largest_reg);
268 cat_pack(iseq, modp->inst_bits, hseq, hbytes * BITS_PER_BYTE);
269 inst_buf[0] = inst;
270 inst_buf[1] = 0xFF >> (modp->largest_reg % BITS_PER_BYTE);
271 cat_pack(iseq, asicp->bit_location, inst_buf, asicp->ireg_length);
272 #ifdef VOYAGER_CAT_DEBUG
273 printk("ins = 0x%x, iseq: ", inst);
274 for(i=0; i< ibytes + hbytes; i++)
275 printk("0x%x ", iseq[i]);
276 printk("\n");
277 #endif
278 if(cat_shiftout(iseq, ibytes, hbytes, padbits)) {
279 CDEBUG(("VOYAGER CAT: cat_sendinst: cat_shiftout failed\n"));
280 return 1;
281 }
282 CDEBUG(("CAT SHIFTOUT DONE\n"));
283 return 0;
284 }
285
286 static int
287 cat_getdata(voyager_module_t *modp, voyager_asic_t *asicp, __u8 reg,
288 __u8 *value)
289 {
290 if(!modp->scan_path_connected) {
291 if(asicp->asic_id != VOYAGER_CAT_ID) {
292 CDEBUG(("VOYAGER CAT: ERROR: cat_getdata to CAT asic with scan path connected\n"));
293 return 1;
294 }
295 if(reg > VOYAGER_SUBADDRHI)
296 outb(VOYAGER_CAT_RUN, CAT_CMD);
297 outb(VOYAGER_CAT_DRCYC, CAT_CMD);
298 outb(VOYAGER_CAT_HEADER, CAT_DATA);
299 *value = inb(CAT_DATA);
300 outb(0xAA, CAT_DATA);
301 if(inb(CAT_DATA) != VOYAGER_CAT_HEADER) {
302 CDEBUG(("cat_getdata: failed to get VOYAGER_CAT_HEADER\n"));
303 return 1;
304 }
305 return 0;
306 }
307 else {
308 __u16 sbits = modp->num_asics -1 + asicp->ireg_length;
309 __u16 sbytes = sbits / BITS_PER_BYTE;
310 __u16 tbytes;
311 __u8 string[VOYAGER_MAX_SCAN_PATH], trailer[VOYAGER_MAX_REG_SIZE];
312 __u8 padbits;
313 int i;
314
315 outb(VOYAGER_CAT_DRCYC, CAT_CMD);
316
317 if((padbits = sbits % BITS_PER_BYTE) != 0) {
318 padbits = BITS_PER_BYTE - padbits;
319 sbytes++;
320 }
321 tbytes = asicp->ireg_length / BITS_PER_BYTE;
322 if(asicp->ireg_length % BITS_PER_BYTE)
323 tbytes++;
324 CDEBUG(("cat_getdata: tbytes = %d, sbytes = %d, padbits = %d\n",
325 tbytes, sbytes, padbits));
326 cat_build_header(trailer, tbytes, 1, asicp->ireg_length);
327
328
329 for(i = tbytes - 1; i >= 0; i--) {
330 outb(trailer[i], CAT_DATA);
331 string[sbytes + i] = inb(CAT_DATA);
332 }
333
334 for(i = sbytes - 1; i >= 0; i--) {
335 outb(0xaa, CAT_DATA);
336 string[i] = inb(CAT_DATA);
337 }
338 *value = 0;
339 cat_unpack(string, padbits + (tbytes * BITS_PER_BYTE) + asicp->asic_location, value, asicp->ireg_length);
340 #ifdef VOYAGER_CAT_DEBUG
341 printk("value=0x%x, string: ", *value);
342 for(i=0; i< tbytes+sbytes; i++)
343 printk("0x%x ", string[i]);
344 printk("\n");
345 #endif
346
347 /* sanity check the rest of the return */
348 for(i=0; i < tbytes; i++) {
349 __u8 input = 0;
350
351 cat_unpack(string, padbits + (i * BITS_PER_BYTE), &input, BITS_PER_BYTE);
352 if(trailer[i] != input) {
353 CDEBUG(("cat_getdata: failed to sanity check rest of ret(%d) 0x%x != 0x%x\n", i, input, trailer[i]));
354 return 1;
355 }
356 }
357 CDEBUG(("cat_getdata DONE\n"));
358 return 0;
359 }
360 }
361
362 static int
363 cat_shiftout(__u8 *data, __u16 data_bytes, __u16 header_bytes, __u8 pad_bits)
364 {
365 int i;
366
367 for(i = data_bytes + header_bytes - 1; i >= header_bytes; i--)
368 outb(data[i], CAT_DATA);
369
370 for(i = header_bytes - 1; i >= 0; i--) {
371 __u8 header = 0;
372 __u8 input;
373
374 outb(data[i], CAT_DATA);
375 input = inb(CAT_DATA);
376 CDEBUG(("cat_shiftout: returned 0x%x\n", input));
377 cat_unpack(data, ((data_bytes + i) * BITS_PER_BYTE) - pad_bits,
378 &header, BITS_PER_BYTE);
379 if(input != header) {
380 CDEBUG(("VOYAGER CAT: cat_shiftout failed to return header 0x%x != 0x%x\n", input, header));
381 return 1;
382 }
383 }
384 return 0;
385 }
386
387 static int
388 cat_senddata(voyager_module_t *modp, voyager_asic_t *asicp,
389 __u8 reg, __u8 value)
390 {
391 outb(VOYAGER_CAT_DRCYC, CAT_CMD);
392 if(!modp->scan_path_connected) {
393 if(asicp->asic_id != VOYAGER_CAT_ID) {
394 CDEBUG(("VOYAGER CAT: ERROR: scan path disconnected when asic != CAT\n"));
395 return 1;
396 }
397 outb(VOYAGER_CAT_HEADER, CAT_DATA);
398 outb(value, CAT_DATA);
399 if(inb(CAT_DATA) != VOYAGER_CAT_HEADER) {
400 CDEBUG(("cat_senddata: failed to get correct header response to sent data\n"));
401 return 1;
402 }
403 if(reg > VOYAGER_SUBADDRHI) {
404 outb(VOYAGER_CAT_RUN, CAT_CMD);
405 outb(VOYAGER_CAT_END, CAT_CMD);
406 outb(VOYAGER_CAT_RUN, CAT_CMD);
407 }
408
409 return 0;
410 }
411 else {
412 __u16 hbytes = asicp->ireg_length / BITS_PER_BYTE;
413 __u16 dbytes = (modp->num_asics - 1 + asicp->ireg_length)/BITS_PER_BYTE;
414 __u8 padbits, dseq[VOYAGER_MAX_SCAN_PATH],
415 hseq[VOYAGER_MAX_REG_SIZE];
416 int i;
417
418 if((padbits = (modp->num_asics - 1
419 + asicp->ireg_length) % BITS_PER_BYTE) != 0) {
420 padbits = BITS_PER_BYTE - padbits;
421 dbytes++;
422 }
423 if(asicp->ireg_length % BITS_PER_BYTE)
424 hbytes++;
425
426 cat_build_header(hseq, hbytes, 1, asicp->ireg_length);
427
428 for(i = 0; i < dbytes + hbytes; i++)
429 dseq[i] = 0xff;
430 CDEBUG(("cat_senddata: dbytes=%d, hbytes=%d, padbits=%d\n",
431 dbytes, hbytes, padbits));
432 cat_pack(dseq, modp->num_asics - 1 + asicp->ireg_length,
433 hseq, hbytes * BITS_PER_BYTE);
434 cat_pack(dseq, asicp->asic_location, &value,
435 asicp->ireg_length);
436 #ifdef VOYAGER_CAT_DEBUG
437 printk("dseq ");
438 for(i=0; i<hbytes+dbytes; i++) {
439 printk("0x%x ", dseq[i]);
440 }
441 printk("\n");
442 #endif
443 return cat_shiftout(dseq, dbytes, hbytes, padbits);
444 }
445 }
446
447 static int
448 cat_write(voyager_module_t *modp, voyager_asic_t *asicp, __u8 reg,
449 __u8 value)
450 {
451 if(cat_sendinst(modp, asicp, reg, VOYAGER_WRITE_CONFIG))
452 return 1;
453 return cat_senddata(modp, asicp, reg, value);
454 }
455
456 static int
457 cat_read(voyager_module_t *modp, voyager_asic_t *asicp, __u8 reg,
458 __u8 *value)
459 {
460 if(cat_sendinst(modp, asicp, reg, VOYAGER_READ_CONFIG))
461 return 1;
462 return cat_getdata(modp, asicp, reg, value);
463 }
464
465 static int
466 cat_subaddrsetup(voyager_module_t *modp, voyager_asic_t *asicp, __u16 offset,
467 __u16 len)
468 {
469 __u8 val;
470
471 if(len > 1) {
472 /* set auto increment */
473 __u8 newval;
474
475 if(cat_read(modp, asicp, VOYAGER_AUTO_INC_REG, &val)) {
476 CDEBUG(("cat_subaddrsetup: read of VOYAGER_AUTO_INC_REG failed\n"));
477 return 1;
478 }
479 CDEBUG(("cat_subaddrsetup: VOYAGER_AUTO_INC_REG = 0x%x\n", val));
480 newval = val | VOYAGER_AUTO_INC;
481 if(newval != val) {
482 if(cat_write(modp, asicp, VOYAGER_AUTO_INC_REG, val)) {
483 CDEBUG(("cat_subaddrsetup: write to VOYAGER_AUTO_INC_REG failed\n"));
484 return 1;
485 }
486 }
487 }
488 if(cat_write(modp, asicp, VOYAGER_SUBADDRLO, (__u8)(offset &0xff))) {
489 CDEBUG(("cat_subaddrsetup: write to SUBADDRLO failed\n"));
490 return 1;
491 }
492 if(asicp->subaddr > VOYAGER_SUBADDR_LO) {
493 if(cat_write(modp, asicp, VOYAGER_SUBADDRHI, (__u8)(offset >> 8))) {
494 CDEBUG(("cat_subaddrsetup: write to SUBADDRHI failed\n"));
495 return 1;
496 }
497 cat_read(modp, asicp, VOYAGER_SUBADDRHI, &val);
498 CDEBUG(("cat_subaddrsetup: offset = %d, hi = %d\n", offset, val));
499 }
500 cat_read(modp, asicp, VOYAGER_SUBADDRLO, &val);
501 CDEBUG(("cat_subaddrsetup: offset = %d, lo = %d\n", offset, val));
502 return 0;
503 }
504
505 static int
506 cat_subwrite(voyager_module_t *modp, voyager_asic_t *asicp, __u16 offset,
507 __u16 len, void *buf)
508 {
509 int i, retval;
510
511 /* FIXME: need special actions for VOYAGER_CAT_ID here */
512 if(asicp->asic_id == VOYAGER_CAT_ID) {
513 CDEBUG(("cat_subwrite: ATTEMPT TO WRITE TO CAT ASIC\n"));
514 /* FIXME -- This is supposed to be handled better
515 * There is a problem writing to the cat asic in the
516 * PSI. The 30us delay seems to work, though */
517 udelay(30);
518 }
519
520 if((retval = cat_subaddrsetup(modp, asicp, offset, len)) != 0) {
521 printk("cat_subwrite: cat_subaddrsetup FAILED\n");
522 return retval;
523 }
524
525 if(cat_sendinst(modp, asicp, VOYAGER_SUBADDRDATA, VOYAGER_WRITE_CONFIG)) {
526 printk("cat_subwrite: cat_sendinst FAILED\n");
527 return 1;
528 }
529 for(i = 0; i < len; i++) {
530 if(cat_senddata(modp, asicp, 0xFF, ((__u8 *)buf)[i])) {
531 printk("cat_subwrite: cat_sendata element at %d FAILED\n", i);
532 return 1;
533 }
534 }
535 return 0;
536 }
537 static int
538 cat_subread(voyager_module_t *modp, voyager_asic_t *asicp, __u16 offset,
539 __u16 len, void *buf)
540 {
541 int i, retval;
542
543 if((retval = cat_subaddrsetup(modp, asicp, offset, len)) != 0) {
544 CDEBUG(("cat_subread: cat_subaddrsetup FAILED\n"));
545 return retval;
546 }
547
548 if(cat_sendinst(modp, asicp, VOYAGER_SUBADDRDATA, VOYAGER_READ_CONFIG)) {
549 CDEBUG(("cat_subread: cat_sendinst failed\n"));
550 return 1;
551 }
552 for(i = 0; i < len; i++) {
553 if(cat_getdata(modp, asicp, 0xFF,
554 &((__u8 *)buf)[i])) {
555 CDEBUG(("cat_subread: cat_getdata element %d failed\n", i));
556 return 1;
557 }
558 }
559 return 0;
560 }
561
562
563 /* buffer for storing EPROM data read in during initialisation */
564 static __initdata __u8 eprom_buf[0xFFFF];
565 static voyager_module_t *voyager_initial_module;
566
567 /* Initialise the cat bus components. We assume this is called by the
568 * boot cpu *after* all memory initialisation has been done (so we can
569 * use kmalloc) but before smp initialisation, so we can probe the SMP
570 * configuration and pick up necessary information. */
571 void
572 voyager_cat_init(void)
573 {
574 voyager_module_t **modpp = &voyager_initial_module;
575 voyager_asic_t **asicpp;
576 voyager_asic_t *qabc_asic = NULL;
577 int i, j;
578 unsigned long qic_addr = 0;
579 __u8 qabc_data[0x20];
580 __u8 num_submodules, val;
581 voyager_eprom_hdr_t *eprom_hdr = (voyager_eprom_hdr_t *)&eprom_buf[0];
582
583 __u8 cmos[4];
584 unsigned long addr;
585
586 /* initiallise the SUS mailbox */
587 for(i=0; i<sizeof(cmos); i++)
588 cmos[i] = voyager_extended_cmos_read(VOYAGER_DUMP_LOCATION + i);
589 addr = *(unsigned long *)cmos;
590 if((addr & 0xff000000) != 0xff000000) {
591 printk(KERN_ERR "Voyager failed to get SUS mailbox (addr = 0x%lx\n", addr);
592 } else {
593 static struct resource res;
594
595 res.name = "voyager SUS";
596 res.start = addr;
597 res.end = addr+0x3ff;
598
599 request_resource(&iomem_resource, &res);
600 voyager_SUS = (struct voyager_SUS *)
601 ioremap(addr, 0x400);
602 printk(KERN_NOTICE "Voyager SUS mailbox version 0x%x\n",
603 voyager_SUS->SUS_version);
604 voyager_SUS->kernel_version = VOYAGER_MAILBOX_VERSION;
605 voyager_SUS->kernel_flags = VOYAGER_OS_HAS_SYSINT;
606 }
607
608 /* clear the processor counts */
609 voyager_extended_vic_processors = 0;
610 voyager_quad_processors = 0;
611
612
613
614 printk("VOYAGER: beginning CAT bus probe\n");
615 /* set up the SuperSet Port Block which tells us where the
616 * CAT communication port is */
617 sspb = inb(VOYAGER_SSPB_RELOCATION_PORT) * 0x100;
618 VDEBUG(("VOYAGER DEBUG: sspb = 0x%x\n", sspb));
619
620 /* now find out if were 8 slot or normal */
621 if((inb(VIC_PROC_WHO_AM_I) & EIGHT_SLOT_IDENTIFIER)
622 == EIGHT_SLOT_IDENTIFIER) {
623 voyager_8slot = 1;
624 printk(KERN_NOTICE "Voyager: Eight slot 51xx configuration detected\n");
625 }
626
627 for(i = VOYAGER_MIN_MODULE;
628 i <= VOYAGER_MAX_MODULE; i++) {
629 __u8 input;
630 int asic;
631 __u16 eprom_size;
632 __u16 sp_offset;
633
634 outb(VOYAGER_CAT_DESELECT, VOYAGER_CAT_CONFIG_PORT);
635 outb(i, VOYAGER_CAT_CONFIG_PORT);
636
637 /* check the presence of the module */
638 outb(VOYAGER_CAT_RUN, CAT_CMD);
639 outb(VOYAGER_CAT_IRCYC, CAT_CMD);
640 outb(VOYAGER_CAT_HEADER, CAT_DATA);
641 /* stream series of alternating 1's and 0's to stimulate
642 * response */
643 outb(0xAA, CAT_DATA);
644 input = inb(CAT_DATA);
645 outb(VOYAGER_CAT_END, CAT_CMD);
646 if(input != VOYAGER_CAT_HEADER) {
647 continue;
648 }
649 CDEBUG(("VOYAGER DEBUG: found module id 0x%x, %s\n", i,
650 cat_module_name(i)));
651 *modpp = kmalloc(sizeof(voyager_module_t), GFP_KERNEL); /*&voyager_module_storage[cat_count++];*/
652 if(*modpp == NULL) {
653 printk("**WARNING** kmalloc failure in cat_init\n");
654 continue;
655 }
656 memset(*modpp, 0, sizeof(voyager_module_t));
657 /* need temporary asic for cat_subread. It will be
658 * filled in correctly later */
659 (*modpp)->asic = kmalloc(sizeof(voyager_asic_t), GFP_KERNEL); /*&voyager_asic_storage[asic_count];*/
660 if((*modpp)->asic == NULL) {
661 printk("**WARNING** kmalloc failure in cat_init\n");
662 continue;
663 }
664 memset((*modpp)->asic, 0, sizeof(voyager_asic_t));
665 (*modpp)->asic->asic_id = VOYAGER_CAT_ID;
666 (*modpp)->asic->subaddr = VOYAGER_SUBADDR_HI;
667 (*modpp)->module_addr = i;
668 (*modpp)->scan_path_connected = 0;
669 if(i == VOYAGER_PSI) {
670 /* Exception leg for modules with no EEPROM */
671 printk("Module \"%s\"\n", cat_module_name(i));
672 continue;
673 }
674
675 CDEBUG(("cat_init: Reading eeprom for module 0x%x at offset %d\n", i, VOYAGER_XSUM_END_OFFSET));
676 outb(VOYAGER_CAT_RUN, CAT_CMD);
677 cat_disconnect(*modpp, (*modpp)->asic);
678 if(cat_subread(*modpp, (*modpp)->asic,
679 VOYAGER_XSUM_END_OFFSET, sizeof(eprom_size),
680 &eprom_size)) {
681 printk("**WARNING**: Voyager couldn't read EPROM size for module 0x%x\n", i);
682 outb(VOYAGER_CAT_END, CAT_CMD);
683 continue;
684 }
685 if(eprom_size > sizeof(eprom_buf)) {
686 printk("**WARNING**: Voyager insufficient size to read EPROM data, module 0x%x. Need %d\n", i, eprom_size);
687 outb(VOYAGER_CAT_END, CAT_CMD);
688 continue;
689 }
690 outb(VOYAGER_CAT_END, CAT_CMD);
691 outb(VOYAGER_CAT_RUN, CAT_CMD);
692 CDEBUG(("cat_init: module 0x%x, eeprom_size %d\n", i, eprom_size));
693 if(cat_subread(*modpp, (*modpp)->asic, 0,
694 eprom_size, eprom_buf)) {
695 outb(VOYAGER_CAT_END, CAT_CMD);
696 continue;
697 }
698 outb(VOYAGER_CAT_END, CAT_CMD);
699 printk("Module \"%s\", version 0x%x, tracer 0x%x, asics %d\n",
700 cat_module_name(i), eprom_hdr->version_id,
701 *((__u32 *)eprom_hdr->tracer), eprom_hdr->num_asics);
702 (*modpp)->ee_size = eprom_hdr->ee_size;
703 (*modpp)->num_asics = eprom_hdr->num_asics;
704 asicpp = &((*modpp)->asic);
705 sp_offset = eprom_hdr->scan_path_offset;
706 /* All we really care about are the Quad cards. We
707 * identify them because they are in a processor slot
708 * and have only four asics */
709 if((i < 0x10 || (i>=0x14 && i < 0x1c) || i>0x1f)) {
710 modpp = &((*modpp)->next);
711 continue;
712 }
713 /* Now we know it's in a processor slot, does it have
714 * a quad baseboard submodule */
715 outb(VOYAGER_CAT_RUN, CAT_CMD);
716 cat_read(*modpp, (*modpp)->asic, VOYAGER_SUBMODPRESENT,
717 &num_submodules);
718 /* lowest two bits, active low */
719 num_submodules = ~(0xfc | num_submodules);
720 CDEBUG(("VOYAGER CAT: %d submodules present\n", num_submodules));
721 if(num_submodules == 0) {
722 /* fill in the dyadic extended processors */
723 __u8 cpu = i & 0x07;
724
725 printk("Module \"%s\": Dyadic Processor Card\n",
726 cat_module_name(i));
727 voyager_extended_vic_processors |= (1<<cpu);
728 cpu += 4;
729 voyager_extended_vic_processors |= (1<<cpu);
730 outb(VOYAGER_CAT_END, CAT_CMD);
731 continue;
732 }
733
734 /* now we want to read the asics on the first submodule,
735 * which should be the quad base board */
736
737 cat_read(*modpp, (*modpp)->asic, VOYAGER_SUBMODSELECT, &val);
738 CDEBUG(("cat_init: SUBMODSELECT value = 0x%x\n", val));
739 val = (val & 0x7c) | VOYAGER_QUAD_BASEBOARD;
740 cat_write(*modpp, (*modpp)->asic, VOYAGER_SUBMODSELECT, val);
741
742 outb(VOYAGER_CAT_END, CAT_CMD);
743
744
745 CDEBUG(("cat_init: Reading eeprom for module 0x%x at offset %d\n", i, VOYAGER_XSUM_END_OFFSET));
746 outb(VOYAGER_CAT_RUN, CAT_CMD);
747 cat_disconnect(*modpp, (*modpp)->asic);
748 if(cat_subread(*modpp, (*modpp)->asic,
749 VOYAGER_XSUM_END_OFFSET, sizeof(eprom_size),
750 &eprom_size)) {
751 printk("**WARNING**: Voyager couldn't read EPROM size for module 0x%x\n", i);
752 outb(VOYAGER_CAT_END, CAT_CMD);
753 continue;
754 }
755 if(eprom_size > sizeof(eprom_buf)) {
756 printk("**WARNING**: Voyager insufficient size to read EPROM data, module 0x%x. Need %d\n", i, eprom_size);
757 outb(VOYAGER_CAT_END, CAT_CMD);
758 continue;
759 }
760 outb(VOYAGER_CAT_END, CAT_CMD);
761 outb(VOYAGER_CAT_RUN, CAT_CMD);
762 CDEBUG(("cat_init: module 0x%x, eeprom_size %d\n", i, eprom_size));
763 if(cat_subread(*modpp, (*modpp)->asic, 0,
764 eprom_size, eprom_buf)) {
765 outb(VOYAGER_CAT_END, CAT_CMD);
766 continue;
767 }
768 outb(VOYAGER_CAT_END, CAT_CMD);
769 /* Now do everything for the QBB submodule 1 */
770 (*modpp)->ee_size = eprom_hdr->ee_size;
771 (*modpp)->num_asics = eprom_hdr->num_asics;
772 asicpp = &((*modpp)->asic);
773 sp_offset = eprom_hdr->scan_path_offset;
774 /* get rid of the dummy CAT asic and read the real one */
775 kfree((*modpp)->asic);
776 for(asic=0; asic < (*modpp)->num_asics; asic++) {
777 int j;
778 voyager_asic_t *asicp = *asicpp
779 = kmalloc(sizeof(voyager_asic_t), GFP_KERNEL); /*&voyager_asic_storage[asic_count++];*/
780 voyager_sp_table_t *sp_table;
781 voyager_at_t *asic_table;
782 voyager_jtt_t *jtag_table;
783
784 if(asicp == NULL) {
785 printk("**WARNING** kmalloc failure in cat_init\n");
786 continue;
787 }
788 memset(asicp, 0, sizeof(voyager_asic_t));
789 asicpp = &(asicp->next);
790 asicp->asic_location = asic;
791 sp_table = (voyager_sp_table_t *)(eprom_buf + sp_offset);
792 asicp->asic_id = sp_table->asic_id;
793 asic_table = (voyager_at_t *)(eprom_buf + sp_table->asic_data_offset);
794 for(j=0; j<4; j++)
795 asicp->jtag_id[j] = asic_table->jtag_id[j];
796 jtag_table = (voyager_jtt_t *)(eprom_buf + asic_table->jtag_offset);
797 asicp->ireg_length = jtag_table->ireg_len;
798 asicp->bit_location = (*modpp)->inst_bits;
799 (*modpp)->inst_bits += asicp->ireg_length;
800 if(asicp->ireg_length > (*modpp)->largest_reg)
801 (*modpp)->largest_reg = asicp->ireg_length;
802 if (asicp->ireg_length < (*modpp)->smallest_reg ||
803 (*modpp)->smallest_reg == 0)
804 (*modpp)->smallest_reg = asicp->ireg_length;
805 CDEBUG(("asic 0x%x, ireg_length=%d, bit_location=%d\n",
806 asicp->asic_id, asicp->ireg_length,
807 asicp->bit_location));
808 if(asicp->asic_id == VOYAGER_QUAD_QABC) {
809 CDEBUG(("VOYAGER CAT: QABC ASIC found\n"));
810 qabc_asic = asicp;
811 }
812 sp_offset += sizeof(voyager_sp_table_t);
813 }
814 CDEBUG(("Module inst_bits = %d, largest_reg = %d, smallest_reg=%d\n",
815 (*modpp)->inst_bits, (*modpp)->largest_reg,
816 (*modpp)->smallest_reg));
817 /* OK, now we have the QUAD ASICs set up, use them.
818 * we need to:
819 *
820 * 1. Find the Memory area for the Quad CPIs.
821 * 2. Find the Extended VIC processor
822 * 3. Configure a second extended VIC processor (This
823 * cannot be done for the 51xx.
824 * */
825 outb(VOYAGER_CAT_RUN, CAT_CMD);
826 cat_connect(*modpp, (*modpp)->asic);
827 CDEBUG(("CAT CONNECTED!!\n"));
828 cat_subread(*modpp, qabc_asic, 0, sizeof(qabc_data), qabc_data);
829 qic_addr = qabc_data[5] << 8;
830 qic_addr = (qic_addr | qabc_data[6]) << 8;
831 qic_addr = (qic_addr | qabc_data[7]) << 8;
832 printk("Module \"%s\": Quad Processor Card; CPI 0x%lx, SET=0x%x\n",
833 cat_module_name(i), qic_addr, qabc_data[8]);
834 #if 0 /* plumbing fails---FIXME */
835 if((qabc_data[8] & 0xf0) == 0) {
836 /* FIXME: 32 way 8 CPU slot monster cannot be
837 * plumbed this way---need to check for it */
838
839 printk("Plumbing second Extended Quad Processor\n");
840 /* second VIC line hardwired to Quad CPU 1 */
841 qabc_data[8] |= 0x20;
842 cat_subwrite(*modpp, qabc_asic, 8, 1, &qabc_data[8]);
843 #ifdef VOYAGER_CAT_DEBUG
844 /* verify plumbing */
845 cat_subread(*modpp, qabc_asic, 8, 1, &qabc_data[8]);
846 if((qabc_data[8] & 0xf0) == 0) {
847 CDEBUG(("PLUMBING FAILED: 0x%x\n", qabc_data[8]));
848 }
849 #endif
850 }
851 #endif
852
853 {
854 struct resource *res = kmalloc(sizeof(struct resource),GFP_KERNEL);
855 memset(res, 0, sizeof(struct resource));
856 res->name = kmalloc(128, GFP_KERNEL);
857 sprintf((char *)res->name, "Voyager %s Quad CPI", cat_module_name(i));
858 res->start = qic_addr;
859 res->end = qic_addr + 0x3ff;
860 request_resource(&iomem_resource, res);
861 }
862
863 qic_addr = (unsigned long)ioremap(qic_addr, 0x400);
864
865 for(j = 0; j < 4; j++) {
866 __u8 cpu;
867
868 if(voyager_8slot) {
869 /* 8 slot has a different mapping,
870 * each slot has only one vic line, so
871 * 1 cpu in each slot must be < 8 */
872 cpu = (i & 0x07) + j*8;
873 } else {
874 cpu = (i & 0x03) + j*4;
875 }
876 if( (qabc_data[8] & (1<<j))) {
877 voyager_extended_vic_processors |= (1<<cpu);
878 }
879 if(qabc_data[8] & (1<<(j+4)) ) {
880 /* Second SET register plumbed: Quad
881 * card has two VIC connected CPUs.
882 * Secondary cannot be booted as a VIC
883 * CPU */
884 voyager_extended_vic_processors |= (1<<cpu);
885 voyager_allowed_boot_processors &= (~(1<<cpu));
886 }
887
888 voyager_quad_processors |= (1<<cpu);
889 voyager_quad_cpi_addr[cpu] = (struct voyager_qic_cpi *)
890 (qic_addr+(j<<8));
891 CDEBUG(("CPU%d: CPI address 0x%lx\n", cpu,
892 (unsigned long)voyager_quad_cpi_addr[cpu]));
893 }
894 outb(VOYAGER_CAT_END, CAT_CMD);
895
896
897
898 *asicpp = NULL;
899 modpp = &((*modpp)->next);
900 }
901 *modpp = NULL;
902 printk("CAT Bus Initialisation finished: extended procs 0x%x, quad procs 0x%x, allowed vic boot = 0x%x\n", voyager_extended_vic_processors, voyager_quad_processors, voyager_allowed_boot_processors);
903 request_resource(&ioport_resource, &vic_res);
904 if(voyager_quad_processors)
905 request_resource(&ioport_resource, &qic_res);
906 /* set up the front power switch */
907 }
908
909 int
910 voyager_cat_readb(__u8 module, __u8 asic, int reg)
911 {
912 return 0;
913 }
914
915 static int
916 cat_disconnect(voyager_module_t *modp, voyager_asic_t *asicp)
917 {
918 __u8 val;
919 int err = 0;
920
921 if(!modp->scan_path_connected)
922 return 0;
923 if(asicp->asic_id != VOYAGER_CAT_ID) {
924 CDEBUG(("cat_disconnect: ASIC is not CAT\n"));
925 return 1;
926 }
927 err = cat_read(modp, asicp, VOYAGER_SCANPATH, &val);
928 if(err) {
929 CDEBUG(("cat_disconnect: failed to read SCANPATH\n"));
930 return err;
931 }
932 val &= VOYAGER_DISCONNECT_ASIC;
933 err = cat_write(modp, asicp, VOYAGER_SCANPATH, val);
934 if(err) {
935 CDEBUG(("cat_disconnect: failed to write SCANPATH\n"));
936 return err;
937 }
938 outb(VOYAGER_CAT_END, CAT_CMD);
939 outb(VOYAGER_CAT_RUN, CAT_CMD);
940 modp->scan_path_connected = 0;
941
942 return 0;
943 }
944
945 static int
946 cat_connect(voyager_module_t *modp, voyager_asic_t *asicp)
947 {
948 __u8 val;
949 int err = 0;
950
951 if(modp->scan_path_connected)
952 return 0;
953 if(asicp->asic_id != VOYAGER_CAT_ID) {
954 CDEBUG(("cat_connect: ASIC is not CAT\n"));
955 return 1;
956 }
957
958 err = cat_read(modp, asicp, VOYAGER_SCANPATH, &val);
959 if(err) {
960 CDEBUG(("cat_connect: failed to read SCANPATH\n"));
961 return err;
962 }
963 val |= VOYAGER_CONNECT_ASIC;
964 err = cat_write(modp, asicp, VOYAGER_SCANPATH, val);
965 if(err) {
966 CDEBUG(("cat_connect: failed to write SCANPATH\n"));
967 return err;
968 }
969 outb(VOYAGER_CAT_END, CAT_CMD);
970 outb(VOYAGER_CAT_RUN, CAT_CMD);
971 modp->scan_path_connected = 1;
972
973 return 0;
974 }
975
976 void
977 voyager_cat_power_off(void)
978 {
979 /* Power the machine off by writing to the PSI over the CAT
980 * bus */
981 __u8 data;
982 voyager_module_t psi = { 0 };
983 voyager_asic_t psi_asic = { 0 };
984
985 psi.asic = &psi_asic;
986 psi.asic->asic_id = VOYAGER_CAT_ID;
987 psi.asic->subaddr = VOYAGER_SUBADDR_HI;
988 psi.module_addr = VOYAGER_PSI;
989 psi.scan_path_connected = 0;
990
991 outb(VOYAGER_CAT_END, CAT_CMD);
992 /* Connect the PSI to the CAT Bus */
993 outb(VOYAGER_CAT_DESELECT, VOYAGER_CAT_CONFIG_PORT);
994 outb(VOYAGER_PSI, VOYAGER_CAT_CONFIG_PORT);
995 outb(VOYAGER_CAT_RUN, CAT_CMD);
996 cat_disconnect(&psi, &psi_asic);
997 /* Read the status */
998 cat_subread(&psi, &psi_asic, VOYAGER_PSI_GENERAL_REG, 1, &data);
999 outb(VOYAGER_CAT_END, CAT_CMD);
1000 CDEBUG(("PSI STATUS 0x%x\n", data));
1001 /* These two writes are power off prep and perform */
1002 data = PSI_CLEAR;
1003 outb(VOYAGER_CAT_RUN, CAT_CMD);
1004 cat_subwrite(&psi, &psi_asic, VOYAGER_PSI_GENERAL_REG, 1, &data);
1005 outb(VOYAGER_CAT_END, CAT_CMD);
1006 data = PSI_POWER_DOWN;
1007 outb(VOYAGER_CAT_RUN, CAT_CMD);
1008 cat_subwrite(&psi, &psi_asic, VOYAGER_PSI_GENERAL_REG, 1, &data);
1009 outb(VOYAGER_CAT_END, CAT_CMD);
1010 }
1011
1012 struct voyager_status voyager_status = { 0 };
1013
1014 void
1015 voyager_cat_psi(__u8 cmd, __u16 reg, __u8 *data)
1016 {
1017 voyager_module_t psi = { 0 };
1018 voyager_asic_t psi_asic = { 0 };
1019
1020 psi.asic = &psi_asic;
1021 psi.asic->asic_id = VOYAGER_CAT_ID;
1022 psi.asic->subaddr = VOYAGER_SUBADDR_HI;
1023 psi.module_addr = VOYAGER_PSI;
1024 psi.scan_path_connected = 0;
1025
1026 outb(VOYAGER_CAT_END, CAT_CMD);
1027 /* Connect the PSI to the CAT Bus */
1028 outb(VOYAGER_CAT_DESELECT, VOYAGER_CAT_CONFIG_PORT);
1029 outb(VOYAGER_PSI, VOYAGER_CAT_CONFIG_PORT);
1030 outb(VOYAGER_CAT_RUN, CAT_CMD);
1031 cat_disconnect(&psi, &psi_asic);
1032 switch(cmd) {
1033 case VOYAGER_PSI_READ:
1034 cat_read(&psi, &psi_asic, reg, data);
1035 break;
1036 case VOYAGER_PSI_WRITE:
1037 cat_write(&psi, &psi_asic, reg, *data);
1038 break;
1039 case VOYAGER_PSI_SUBREAD:
1040 cat_subread(&psi, &psi_asic, reg, 1, data);
1041 break;
1042 case VOYAGER_PSI_SUBWRITE:
1043 cat_subwrite(&psi, &psi_asic, reg, 1, data);
1044 break;
1045 default:
1046 printk(KERN_ERR "Voyager PSI, unrecognised command %d\n", cmd);
1047 break;
1048 }
1049 outb(VOYAGER_CAT_END, CAT_CMD);
1050 }
1051
1052 void
1053 voyager_cat_do_common_interrupt(void)
1054 {
1055 /* This is caused either by a memory parity error or something
1056 * in the PSI */
1057 __u8 data;
1058 voyager_module_t psi = { 0 };
1059 voyager_asic_t psi_asic = { 0 };
1060 struct voyager_psi psi_reg;
1061 int i;
1062 re_read:
1063 psi.asic = &psi_asic;
1064 psi.asic->asic_id = VOYAGER_CAT_ID;
1065 psi.asic->subaddr = VOYAGER_SUBADDR_HI;
1066 psi.module_addr = VOYAGER_PSI;
1067 psi.scan_path_connected = 0;
1068
1069 outb(VOYAGER_CAT_END, CAT_CMD);
1070 /* Connect the PSI to the CAT Bus */
1071 outb(VOYAGER_CAT_DESELECT, VOYAGER_CAT_CONFIG_PORT);
1072 outb(VOYAGER_PSI, VOYAGER_CAT_CONFIG_PORT);
1073 outb(VOYAGER_CAT_RUN, CAT_CMD);
1074 cat_disconnect(&psi, &psi_asic);
1075 /* Read the status. NOTE: Need to read *all* the PSI regs here
1076 * otherwise the cmn int will be reasserted */
1077 for(i = 0; i < sizeof(psi_reg.regs); i++) {
1078 cat_read(&psi, &psi_asic, i, &((__u8 *)&psi_reg.regs)[i]);
1079 }
1080 outb(VOYAGER_CAT_END, CAT_CMD);
1081 if((psi_reg.regs.checkbit & 0x02) == 0) {
1082 psi_reg.regs.checkbit |= 0x02;
1083 cat_write(&psi, &psi_asic, 5, psi_reg.regs.checkbit);
1084 printk("VOYAGER RE-READ PSI\n");
1085 goto re_read;
1086 }
1087 outb(VOYAGER_CAT_RUN, CAT_CMD);
1088 for(i = 0; i < sizeof(psi_reg.subregs); i++) {
1089 /* This looks strange, but the PSI doesn't do auto increment
1090 * correctly */
1091 cat_subread(&psi, &psi_asic, VOYAGER_PSI_SUPPLY_REG + i,
1092 1, &((__u8 *)&psi_reg.subregs)[i]);
1093 }
1094 outb(VOYAGER_CAT_END, CAT_CMD);
1095 #ifdef VOYAGER_CAT_DEBUG
1096 printk("VOYAGER PSI: ");
1097 for(i=0; i<sizeof(psi_reg.regs); i++)
1098 printk("%02x ", ((__u8 *)&psi_reg.regs)[i]);
1099 printk("\n ");
1100 for(i=0; i<sizeof(psi_reg.subregs); i++)
1101 printk("%02x ", ((__u8 *)&psi_reg.subregs)[i]);
1102 printk("\n");
1103 #endif
1104 if(psi_reg.regs.intstatus & PSI_MON) {
1105 /* switch off or power fail */
1106
1107 if(psi_reg.subregs.supply & PSI_SWITCH_OFF) {
1108 if(voyager_status.switch_off) {
1109 printk(KERN_ERR "Voyager front panel switch turned off again---Immediate power off!\n");
1110 voyager_cat_power_off();
1111 /* not reached */
1112 } else {
1113 printk(KERN_ERR "Voyager front panel switch turned off\n");
1114 voyager_status.switch_off = 1;
1115 voyager_status.request_from_kernel = 1;
1116 up(&kvoyagerd_sem);
1117 }
1118 /* Tell the hardware we're taking care of the
1119 * shutdown, otherwise it will power the box off
1120 * within 3 seconds of the switch being pressed and,
1121 * which is much more important to us, continue to
1122 * assert the common interrupt */
1123 data = PSI_CLR_SWITCH_OFF;
1124 outb(VOYAGER_CAT_RUN, CAT_CMD);
1125 cat_subwrite(&psi, &psi_asic, VOYAGER_PSI_SUPPLY_REG,
1126 1, &data);
1127 outb(VOYAGER_CAT_END, CAT_CMD);
1128 } else {
1129
1130 VDEBUG(("Voyager ac fail reg 0x%x\n",
1131 psi_reg.subregs.ACfail));
1132 if((psi_reg.subregs.ACfail & AC_FAIL_STAT_CHANGE) == 0) {
1133 /* No further update */
1134 return;
1135 }
1136 #if 0
1137 /* Don't bother trying to find out who failed.
1138 * FIXME: This probably makes the code incorrect on
1139 * anything other than a 345x */
1140 for(i=0; i< 5; i++) {
1141 if( psi_reg.subregs.ACfail &(1<<i)) {
1142 break;
1143 }
1144 }
1145 printk(KERN_NOTICE "AC FAIL IN SUPPLY %d\n", i);
1146 #endif
1147 /* DON'T do this: it shuts down the AC PSI
1148 outb(VOYAGER_CAT_RUN, CAT_CMD);
1149 data = PSI_MASK_MASK | i;
1150 cat_subwrite(&psi, &psi_asic, VOYAGER_PSI_MASK,
1151 1, &data);
1152 outb(VOYAGER_CAT_END, CAT_CMD);
1153 */
1154 printk(KERN_ERR "Voyager AC power failure\n");
1155 outb(VOYAGER_CAT_RUN, CAT_CMD);
1156 data = PSI_COLD_START;
1157 cat_subwrite(&psi, &psi_asic, VOYAGER_PSI_GENERAL_REG,
1158 1, &data);
1159 outb(VOYAGER_CAT_END, CAT_CMD);
1160 voyager_status.power_fail = 1;
1161 voyager_status.request_from_kernel = 1;
1162 up(&kvoyagerd_sem);
1163 }
1164
1165
1166 } else if(psi_reg.regs.intstatus & PSI_FAULT) {
1167 /* Major fault! */
1168 printk(KERN_ERR "Voyager PSI Detected major fault, immediate power off!\n");
1169 voyager_cat_power_off();
1170 /* not reached */
1171 } else if(psi_reg.regs.intstatus & (PSI_DC_FAIL | PSI_ALARM
1172 | PSI_CURRENT | PSI_DVM
1173 | PSI_PSCFAULT | PSI_STAT_CHG)) {
1174 /* other psi fault */
1175
1176 printk(KERN_WARNING "Voyager PSI status 0x%x\n", data);
1177 /* clear the PSI fault */
1178 outb(VOYAGER_CAT_RUN, CAT_CMD);
1179 cat_write(&psi, &psi_asic, VOYAGER_PSI_STATUS_REG, 0);
1180 outb(VOYAGER_CAT_END, CAT_CMD);
1181 }
1182 }
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