Linux-2.6.12-rc2
[linux-3.10.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 }