util/inteltool/amb.c

   1 /* inteltool - dump all registers on an Intel CPU + chipset based system */
   2 /* SPDX-License-Identifier: GPL-2.0-only */
   3
   4 #include <stddef.h>
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include "inteltool.h"
   8
   9 #define AMB_CONFIG_SPACE_SIZE 0x20000
  10
  11 #define AMB_ADDR(fn, reg) (((fn & 7) << 8) | ((reg & 0xff)))
  12
  13 static uint32_t amb_read_config32(volatile void *base, int fn, int reg)
  14 {
  15         return read32(base + AMB_ADDR(fn, reg));
  16 }
  17
  18 static void amb_printreg32(volatile void *base, int fn, int reg,
  19                            const char *name, int printzero)
  20 {
  21         uint32_t val = amb_read_config32(base, fn, reg);
  22         if (!val && !printzero)
  23                 return;
  24         printf("%d:%2.2x %-16.16s: 0x%08x\n", fn, reg, name, val);
  25 }
  26
  27 static uint16_t amb_read_config16(volatile void *base, int fn, int reg)
  28 {
  29         return read16(base + AMB_ADDR(fn, reg));
  30 }
  31
  32 static void amb_printreg16(volatile void *base, int fn, int reg,
  33                            const char *name, int printzero)
  34 {
  35         uint16_t val = amb_read_config16(base, fn, reg);
  36         if (!val && !printzero)
  37                 return;
  38         printf("%d:%2.2x %-16.16s: 0x%04x\n", fn, reg, name, val);
  39
  40 }
  41
  42 static uint8_t amb_read_config8(volatile void *base, int fn, int reg)
  43 {
  44         return read8(base + AMB_ADDR(fn, reg));
  45 }
  46
  47 static void amb_printreg8(volatile void *base, int fn, int reg,
  48                           const char *name, int printzero)
  49 {
  50         uint8_t val = amb_read_config8(base, fn, reg);
  51         if (!val && !printzero)
  52                 return;
  53         printf("%d:%2.2x %-16.16s: 0x%02x\n", fn, reg, name, val);
  54
  55 }
  56
  57 static void amb_printreg24(volatile void *base, int fn, int reg,
  58                            const char *name, int printzero)
  59 {
  60         uint32_t val;
  61
  62         if (reg & 1) {
  63                 val = amb_read_config8(base, fn, reg) |
  64                         (amb_read_config16(base, fn, reg + 1) << 8);
  65         } else {
  66                 val = amb_read_config16(base, fn, reg) |
  67                         (amb_read_config8(base, fn, reg + 2) << 16);
  68         }
  69
  70         if (!val && !printzero)
  71                 return;
  72
  73         printf("%d:%2.2x %-16.16s: 0x%06x\n", fn, reg, name, val);
  74 }
  75
  76
  77 struct amb_register {
  78         int fn;
  79         int offset;
  80         const char *name;
  81         void (*printfunc)(volatile void *, int, int, const char *, int);
  82         int width;
  83 } amb_registers[] = {
  84         { 0, 0x00, "VID", NULL, 2 },
  85         { 0, 0x02, "DID", NULL, 2 },
  86         { 0, 0x08, "RID", NULL, 1 },
  87         { 0, 0x09, "CCR", NULL, 3 },
  88         { 0, 0x0e, "HDR", NULL, 1 },
  89         { 1, 0x40, "FBDS0", NULL, 1 },
  90         { 1, 0x41, "FBDS1", NULL, 1 },
  91         { 1, 0x42, "FBDS2", NULL, 1 },
  92         { 1, 0x43, "FBDS3", NULL, 1 },
  93         { 1, 0x50, "FBDSBCFGCUR", NULL, 1 },
  94         { 1, 0x51, "FBDNBCFGCUR", NULL, 1 },
  95         { 1, 0x52, "LINKPARCUR", NULL, 2 },
  96         { 1, 0x54, "FBDSBCFGNXT", NULL, 1 },
  97         { 1, 0x55, "FBDNBCFGNXT", NULL, 1 },
  98         { 1, 0x56, "LINKPARNXT", NULL, 2 },
  99         { 1, 0x5a, "SBRXMAR", NULL, 1 },
 100         { 1, 0x5b, "NBRXMAR", NULL, 1 },
 101         { 1, 0x5c, "MODES", NULL, 1 },
 102         { 1, 0x60, "FEATURES", NULL, 2 },
 103         { 1, 0x64, "FBDLIS", NULL, 3 },
 104         { 1, 0x68, "FBDLOCKTO", NULL, 2 },
 105         { 1, 0x6c, "FBDHAC", NULL, 1 },
 106         { 1, 0x6e, "FBDLS", NULL, 1 },
 107         { 1, 0x70, "RECALDUR", NULL, 1 },
 108         { 1, 0x74, "LOSDUR", NULL, 1 },
 109         { 1, 0x78, "SYNCTRAININT", NULL, 1 },
 110         { 1, 0x7c, "SBCALSTATUS", NULL, 2 },
 111         { 1, 0x7e, "NBCALSTATUS", NULL, 2 },
 112         { 1, 0x88, "CBC", NULL, 1 },
 113         { 1, 0x8c, "EMASK", NULL, 1 },
 114         { 1, 0x90, "FERR", NULL, 1 },
 115         { 1, 0x94, "NERR", NULL, 1 },
 116         { 1, 0x98, "RECCFG", NULL, 2 },
 117         { 1, 0x9c, "RECFBD0", NULL, 2 },
 118         { 1, 0x9e, "RECFBD1", NULL, 2 },
 119         { 1, 0xa0, "RECFBD2", NULL, 2 },
 120         { 1, 0xa2, "RECFBD3", NULL, 2 },
 121         { 1, 0xa4, "RECFBD4", NULL, 2 },
 122         { 1, 0xa6, "RECFBD5", NULL, 2 },
 123         { 1, 0xa8, "RECFBD6", NULL, 2 },
 124         { 1, 0xaa, "RECFBD7", NULL, 2 },
 125         { 1, 0xac, "RECFBD8", NULL, 2 },
 126         { 1, 0xae, "RECFBD9", NULL, 2 },
 127         { 1, 0xb0, "PERSBYTE0NXT", NULL, 1 },
 128         { 1, 0xb1, "PERSBYTE1NXT", NULL, 1 },
 129         { 1, 0xb2, "PERSBYTE2NXT", NULL, 1 },
 130         { 1, 0xb3, "PERSBYTE3NXT", NULL, 1 },
 131         { 1, 0xb4, "PERSBYTE4NXT", NULL, 1 },
 132         { 1, 0xb5, "PERSBYTE5NXT", NULL, 1 },
 133         { 1, 0xb6, "PERSBYTE6NXT", NULL, 1 },
 134         { 1, 0xb7, "PERSBYTE7NXT", NULL, 1 },
 135         { 1, 0xb8, "PERSBYTE8NXT", NULL, 1 },
 136         { 1, 0xb9, "PERSBYTE9NXT", NULL, 1 },
 137         { 1, 0xba, "PERSBYTE10NXT", NULL, 1 },
 138         { 1, 0xbb, "PERSBYTE11NXT", NULL, 1 },
 139         { 1, 0xbc, "PERSBYTE12NXT", NULL, 1 },
 140         { 1, 0xbd, "PERSBYTE13NXT", NULL, 1 },
 141         { 1, 0xc0, "PERSBYTE0CUR", NULL, 1 },
 142         { 1, 0xc1, "PERSBYTE1CUR", NULL, 1 },
 143         { 1, 0xc2, "PERSBYTE2CUR", NULL, 1 },
 144         { 1, 0xc3, "PERSBYTE3CUR", NULL, 1 },
 145         { 1, 0xc4, "PERSBYTE4CUR", NULL, 1 },
 146         { 1, 0xc5, "PERSBYTE5CUR", NULL, 1 },
 147         { 1, 0xc6, "PERSBYTE6CUR", NULL, 1 },
 148         { 1, 0xc7, "PERSBYTE7CUR", NULL, 1 },
 149         { 1, 0xc8, "PERSBYTE8CUR", NULL, 1 },
 150         { 1, 0xc9, "PERSBYTE9CUR", NULL, 1 },
 151         { 1, 0xca, "PERSBYTE10CUR", NULL, 1 },
 152         { 1, 0xcb, "PERSBYTE11CUR", NULL, 1 },
 153         { 1, 0xcc, "PERSBYTE12CUR", NULL, 1 },
 154         { 1, 0xcd, "PERSBYTE13CUR", NULL, 1 },
 155         { 1, 0xe8, "CMD2DATANXT", NULL, 1 },
 156         { 1, 0xe9, "CMD2DATACUR", NULL, 1 },
 157         { 1, 0xea, "C2DINCRNXT", NULL, 1 },
 158         { 1, 0xeb, "C2DINCRCUR", NULL, 1 },
 159         { 1, 0xec, "C2DDECRNXT", NULL, 1 },
 160         { 1, 0xed, "C2DDECRCUR", NULL, 1 },
 161         { 2, 0x40, "SBDRVCFG", NULL, 1 },
 162         { 2, 0x41, "NBDRVCFG", NULL, 1 },
 163         { 2, 0x42, "FBDPDCFG", NULL, 1 },
 164         { 2, 0x44, "RTERMCFG", NULL, 3 },
 165         { 2, 0x47, "IDTCTRLCFG", NULL, 1 },
 166         { 2, 0x48, "FBDBUFCFG", NULL, 1 },
 167         { 2, 0x50, "SBRQOFFS0", NULL, 1 },
 168         { 2, 0x51, "SBRQOFFS1", NULL, 1 },
 169         { 2, 0x52, "SBRQOFFS2", NULL, 1 },
 170         { 2, 0x53, "SBRQOFFS3", NULL, 1 },
 171         { 2, 0x54, "SBRQOFFS4", NULL, 1 },
 172         { 2, 0x55, "SBRQOFFS5", NULL, 1 },
 173         { 2, 0x56, "SBRQOFFS6", NULL, 1 },
 174         { 2, 0x57, "SBRQOFFS7", NULL, 1 },
 175         { 2, 0x58, "SBRQOFFS8", NULL, 1 },
 176         { 2, 0x59, "SBRQOFFS9", NULL, 1 },
 177
 178         { 2, 0x60, "NBRQOFFS0", NULL, 1 },
 179         { 2, 0x61, "NBRQOFFS1", NULL, 1 },
 180         { 2, 0x62, "NBRQOFFS2", NULL, 1 },
 181         { 2, 0x63, "NBRQOFFS3", NULL, 1 },
 182         { 2, 0x64, "NBRQOFFS4", NULL, 1 },
 183         { 2, 0x65, "NBRQOFFS5", NULL, 1 },
 184         { 2, 0x66, "NBRQOFFS6", NULL, 1 },
 185         { 2, 0x67, "NBRQOFFS7", NULL, 1 },
 186         { 2, 0x68, "NBRQOFFS8", NULL, 1 },
 187         { 2, 0x69, "NBRQOFFS9", NULL, 1 },
 188         { 2, 0x6a, "NBRQOFFS10", NULL, 1 },
 189         { 2, 0x6b, "NBRQOFFS11", NULL, 1 },
 190         { 2, 0x6c, "NBRQOFFS12", NULL, 1 },
 191         { 2, 0x6d, "NBRQOFFS13", NULL, 1 },
 192         { 2, 0x90, "TESTCFG", NULL, 1 },
 193         { 2, 0x94, "SBTXENCFG", NULL, 2 },
 194         { 2, 0x96, "NBTXENCFG", NULL, 2 },
 195         { 2, 0x98, "IDLEDETCFG", NULL, 2 },
 196         { 2, 0xa4, "SBRXSTATUS", NULL, 4 },
 197         { 2, 0xa8, "SBRXSTATUS", NULL, 1 },
 198         { 3, 0x3c, "MBIDT", NULL, 1 },
 199         { 3, 0x40, "MBCSR", NULL, 4 },
 200         { 3, 0x44, "MBADDR", NULL, 4 },
 201         { 3, 0x40, "MBDATA0", NULL, 4 },
 202         { 3, 0x41, "MBDATA1", NULL, 4 },
 203         { 3, 0x42, "MBDATA2", NULL, 4 },
 204         { 3, 0x43, "MBDATA3", NULL, 4 },
 205         { 3, 0x44, "MBDATA4", NULL, 4 },
 206         { 3, 0x45, "MBDATA5", NULL, 4 },
 207         { 3, 0x46, "MBDATA6", NULL, 4 },
 208         { 3, 0x47, "MBDATA7", NULL, 4 },
 209         { 3, 0x48, "MBDATA8", NULL, 4 },
 210         { 3, 0x49, "MBDATA9", NULL, 4 },
 211         { 3, 0x70, "DAREFTC", NULL, 4 },
 212         { 3, 0x74, "DSREFTC", NULL, 3 },
 213         { 3, 0x77, "MTR", NULL, 1 },
 214         { 3, 0x78, "DRT", NULL, 4 },
 215         { 3, 0x7c, "DRC", NULL, 4 },
 216         { 3, 0x80, "TEMPLO", NULL, 1 },
 217         { 3, 0x81, "TEMPMID", NULL, 1 },
 218         { 3, 0x82, "TEMPHI", NULL, 1 },
 219         { 3, 0x83, "UPDATED", NULL, 1 },
 220         { 3, 0x84, "TEMPSTAT", NULL, 1 },
 221         { 3, 0x85, "TEMP", NULL, 1 },
 222         { 3, 0x86, "TEMPOFFSET", NULL, 1 },
 223         { 3, 0x9c, "MB_START_ADDR", NULL, 4 },
 224         { 3, 0xa0, "MB_END_ADDR", NULL, 4 },
 225         { 3, 0xa4, "MBLFSRSEED", NULL, 4 },
 226         { 3, 0xa8, "MBFADDRPTR", NULL, 4 },
 227         { 3, 0xb0, "MB_ERR_DATA00", NULL, 4 },
 228         { 3, 0xb4, "MB_ERR_DATA01", NULL, 4 },
 229         { 3, 0xb8, "MB_ERR_DATA02", NULL, 4 },
 230         { 3, 0xbc, "MB_ERR_DATA03", NULL, 4 },
 231         { 3, 0xc0, "MB_ERR_DATA04", NULL, 2 },
 232         { 3, 0xc4, "MB_ERR_DATA10", NULL, 4 },
 233         { 3, 0xc8, "MB_ERR_DATA11", NULL, 4 },
 234         { 3, 0xcc, "MB_ERR_DATA12", NULL, 4 },
 235         { 3, 0xd0, "MB_ERR_DATA13", NULL, 4 },
 236         { 3, 0xd4, "MB_ERR_DATA14", NULL, 2 },
 237
 238         { 4, 0x40, "DCALCSR", NULL, 4 },
 239         { 4, 0x44, "DCALADDR", NULL, 4 },
 240         { 4, 0x98, "DSRETC", NULL, 4 },
 241         { 4, 0xa4, "S3RESTORE0", NULL, 4 },
 242         { 4, 0xa8, "S3RESTORE1", NULL, 4 },
 243         { 4, 0xac, "S3RESTORE2", NULL, 4 },
 244         { 4, 0xb0, "S3RESTORE3", NULL, 4 },
 245         { 4, 0xb4, "S3RESTORE4", NULL, 4 },
 246         { 4, 0xb8, "S3RESTORE5", NULL, 4 },
 247         { 4, 0xbc, "S3RESTORE6", NULL, 4 },
 248         { 4, 0xc0, "S3RESTORE7", NULL, 4 },
 249         { 4, 0xc4, "S3RESTORE8", NULL, 4 },
 250         { 4, 0xc8, "S3RESTORE9", NULL, 4 },
 251         { 4, 0xcc, "S3RESTORE10", NULL, 4 },
 252         { 4, 0xe8, "FIVESREG", NULL, 4 },
 253         { 4, 0xea, "AAAAREG", NULL, 4 },
 254
 255         { 5, 0x3c, "TRANSCFG", NULL, 4 },
 256         { 5, 0x40, "TRANDERR0", NULL, 2 },
 257         { 5, 0x42, "TRANDERR1", NULL, 2 },
 258         { 5, 0x44, "TRANDERR2", NULL, 2 },
 259         { 5, 0x46, "TRANDERR3", NULL, 2 },
 260         { 5, 0x48, "TRANDERR4", NULL, 2 },
 261         { 5, 0x4a, "TRANDERR5", NULL, 2 },
 262         { 5, 0x4c, "TRANDERR6", NULL, 2 },
 263         { 5, 0x4e, "TRANDERR7", NULL, 2 },
 264         { 5, 0x50, "TRANDERR8", NULL, 2 },
 265         { 5, 0x80, "TRANSCTRL", NULL, 1 },
 266         { 5, 0xbc, "SBMATCHU", NULL, 3 },
 267         { 5, 0xc0, "SBMATCHL0", NULL, 4 },
 268         { 5, 0xcc, "SBMASKU", NULL, 3 },
 269         { 5, 0xd0, "SBMASKL0", NULL, 4 },
 270         { 5, 0xe0, "EVENTSEL0", NULL, 3 },
 271         { 5, 0xfc, "EICNTL", NULL, 1 },
 272         { 5, 0xfe, "STUCKL", NULL, 1 },
 273
 274         { 6, 0x50, "NBRXSTATUS", NULL, 4 },
 275         { 6, 0x7c, "SPAD0", NULL, 4 },
 276         { 6, 0x80, "SBFIBPORTCTL", NULL, 4 },
 277         { 6, 0x84, "SBFIBPGCTL", NULL, 4 },
 278         { 6, 0x88, "SBFIBPATTBUF1", NULL, 3 },
 279         { 6, 0x8c, "SBFIBTXMSK", NULL, 2 },
 280         { 6, 0x90, "SBFIBRXMSK", NULL, 2 },
 281         { 6, 0x94, "SBFIBTXSHFT", NULL, 2 },
 282         { 6, 0x98, "SBFIBRXSHFT", NULL, 2 },
 283         { 6, 0x9c, "SBFIBRXLNERR", NULL, 2 },
 284         { 6, 0xa0, "SBFIBPATTBUF2", NULL, 3 },
 285         { 6, 0xa4, "SBFIBPATT2EN", NULL, 2 },
 286         { 6, 0xb0, "SBFIBINIT", NULL, 4 },
 287         { 6, 0xb4, "SBIBISTMISC", NULL, 3 },
 288         { 6, 0xc0, "NBFIBPORTCTL", NULL, 4 },
 289         { 6, 0xc4, "NBFIBPGCTL", NULL, 4 },
 290         { 6, 0xc8, "NBFIBPATTBUF1", NULL, 3 },
 291         { 6, 0xcc, "NBFIBTXMSK", NULL, 2 },
 292         { 6, 0xd0, "NBFIBRXMSK", NULL, 2 },
 293         { 6, 0xd4, "NBFIBTXSHFT", NULL, 2 },
 294         { 6, 0xd8, "NBFIBRXSHFT", NULL, 2 },
 295         { 6, 0xdc, "NBFIBRXLNERR", NULL, 2 },
 296         { 6, 0xe0, "NBFIBPATTBUF2", NULL, 3 },
 297         { 6, 0xe4, "NBFIBPATT2EN", NULL, 2 },
 298         { 6, 0xf0, "NBFIBINIT", NULL, 4 },
 299         { 6, 0xf4, "NBIBISTMISC", NULL, 3 },
 300
 301         { 7, 0x40, "ODRV_ADJ_ADDR_A", NULL, 3 },
 302         { 7, 0x43, "ODRV_ADJ_CAS_A", NULL, 3 },
 303         { 7, 0x46, "ODRV_ADJ_CKE_A", NULL, 3 },
 304         { 7, 0x49, "ODRV_ADJ_ODT_A", NULL, 3 },
 305         { 7, 0x4c, "ODRV_ADJ_ADDR_B", NULL, 3 },
 306         { 7, 0x4f, "ODRV_ADJ_CAS_B", NULL, 3 },
 307         { 7, 0x52, "ODRV_ADJ_CKE_B", NULL, 3 },
 308         { 7, 0x55, "ODRV_ADJ_ODT_B", NULL, 3 },
 309         { 7, 0x58, "ODRV_ADJ_CLK0", NULL, 3 },
 310         { 7, 0x5b, "ODRV_ADJ_CLK1", NULL, 3 },
 311         { 7, 0x5e, "ODRV_ADJ_CLK2", NULL, 3 },
 312         { 7, 0x61, "ODRV_ADJ_CLK3", NULL, 3 },
 313         { 7, 0x64, "ODRV_ADJ_DQ_DQS", NULL, 3 },
 314         { 7, 0x67, "DDR_ODTCTL", NULL, 1 },
 315         { 7, 0x69, "DDR_ZCAL", NULL, 2 },
 316         { 7, 0x6c, "DDR_ZCTL", NULL, 4 },
 317         { 7, 0x78, "VHOSTCNTL", NULL, 1 },
 318         { 7, 0x79, "DQSDLY_SMBUSCTL", NULL, 1 },
 319         { 7, 0x7c, "SPAD1", NULL, 4 },
 320         { 7, 0x80, "CTL_ADDR_A", NULL, 1 },
 321         { 7, 0x81, "CTL_CAS_A", NULL, 1 },
 322         { 7, 0x82, "CTL_CKE_A", NULL, 1 },
 323         { 7, 0x83, "CTL_ODT_A", NULL, 1 },
 324         { 7, 0x84, "CTL_ADDR_B", NULL, 1 },
 325         { 7, 0x85, "CTL_CAS_B", NULL, 1 },
 326         { 7, 0x86, "CTL_CKE_B", NULL, 1 },
 327         { 7, 0x87, "CTL_ODT_B", NULL, 1 },
 328         { 7, 0x88, "CTL_CLK0", NULL, 1 },
 329         { 7, 0x89, "CTL_CLK1", NULL, 1 },
 330         { 7, 0x8a, "CTL_CLK2", NULL, 1 },
 331         { 7, 0x8b, "CTL_CLK3", NULL, 1 },
 332         { 7, 0x8c, "CTL_DQ", NULL, 1 },
 333         { 7, 0x8d, "CTL_DQS", NULL, 1 },
 334         { 0, 0x00, NULL, NULL, 0 },
 335 };
 336
 337 static void dump_amb(volatile void *ambconfig, int branch, int channel, int amb)
 338 {
 339         struct amb_register *reg;
 340         static int lastreg, lastfn;
 341         int bytes;
 342
 343         volatile void *base = ambconfig + \
 344                 ((branch << 16) | (channel << 15) | (amb << 11));
 345
 346         if ((amb_read_config32(base, 0, 0) == 0xffffffff) |
 347             (amb_read_config32(base, 0, 0) == 0x00000000))
 348                 return;
 349
 350         printf("AMB %d, branch %d, channel %d register dump:\n"
 351                "============================================\n",
 352                amb, branch, channel);
 353
 354         for(reg = amb_registers; reg->name; reg++) {
 355                 if (reg->fn == lastfn && reg->offset > 0 && reg->offset - lastreg) {
 356                         bytes = reg->offset - lastreg;
 357
 358                         do {
 359                                 if (!(lastreg & 3) && bytes >= 4) {
 360                                         amb_printreg32(base, reg->fn, lastreg, "RESERVED", 0);
 361                                         bytes -= 4;
 362                                         lastreg += 4;
 363                                 } else if (!(lastreg & 1) && bytes >= 2) {
 364                                         amb_printreg16(base, reg->fn, lastreg, "RESERVED", 0);
 365                                         bytes -= 2;
 366                                         lastreg += 2;
 367                                 } else {
 368                                         amb_printreg8(base, reg->fn, lastreg, "RESERVED", 0);
 369                                         bytes -= 1;
 370                                         lastreg += 1;
 371                                 }
 372                         } while(bytes > 0);
 373                 }
 374
 375                 switch(reg->width) {
 376                 case 1:
 377                         amb_printreg8(base, reg->fn, reg->offset, reg->name, 1);
 378                         break;
 379                 case 2:
 380                         amb_printreg16(base, reg->fn, reg->offset, reg->name, 1);
 381                         break;
 382
 383                 case 3:
 384                         amb_printreg24(base, reg->fn, reg->offset, reg->name, 1);
 385                         break;
 386
 387                 case 4:
 388                         amb_printreg32(base, reg->fn, reg->offset, reg->name, 1);
 389                         break;
 390
 391                 default:
 392                         break;
 393                 }
 394
 395                 if (reg->printfunc)
 396                         reg->printfunc(base, reg->fn, reg->offset, reg->name, 1);
 397                 lastreg = reg->offset + reg->width;
 398                 lastfn = reg->fn;
 399         }
 400         printf("\n\n");
 401 }
 402
 403 int print_ambs(struct pci_dev *dev, struct pci_access *pacc)
 404 {
 405         struct pci_dev *dev16;
 406         int branch, channel, amb;
 407         int max_branch, max_channel, max_amb;
 408         volatile void *ambconfig;
 409         uint64_t ambconfig_phys;
 410
 411         printf("\n============= AMBs ============\n\n");
 412
 413         switch (dev->device_id) {
 414         case PCI_DEVICE_ID_INTEL_I5000P:
 415         case PCI_DEVICE_ID_INTEL_I5000X:
 416         case PCI_DEVICE_ID_INTEL_I5000Z:
 417
 418                 max_branch = 2;
 419
 420                 if (!(dev16 = pci_get_dev(pacc, 0, 0, 0x10, 0))) {
 421                         perror("Error: no device 0:16.0\n");
 422                         return 1;
 423                 }
 424
 425                 ambconfig_phys = ((uint64_t)pci_read_long(dev16, 0x4c) << 32) |
 426                         pci_read_long(dev16, 0x48);
 427
 428                 max_channel = pci_read_byte(dev16, 0x56)/max_branch;
 429                 max_amb = pci_read_byte(dev16, 0x57);
 430                 pci_free_dev(dev16);
 431                 break;
 432
 433         default:
 434                 fprintf(stderr, "Error: Dumping AMBs on this MCH is not (yet) supported.\n");
 435                 return 1;
 436         }
 437
 438         if (!(ambconfig = map_physical(ambconfig_phys, AMB_CONFIG_SPACE_SIZE))) {
 439                 fprintf(stderr, "Error mapping AMB config space\n");
 440                 return 1;
 441         }
 442
 443         for(branch = 0; branch < max_branch; branch++) {
 444                 for(channel = 0; channel < max_channel; channel++) {
 445                         for(amb = 0; amb < max_amb; amb++) {
 446                                 dump_amb(ambconfig, branch, channel, amb);
 447                         }
 448                 }
 449         }
 450         unmap_physical((void *)ambconfig, AMB_CONFIG_SPACE_SIZE);
 451         return 0;
 452 }