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