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