Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | } |