git.oblomov.eu Git - linux-2.6/blob - 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 }