release/src-rt-6.x/linux/linux-2.6/arch/powerpc/boot/mv64x60.c

   1 /*
   2  * Marvell hostbridge routines
   3  *
   4  * Author: Mark A. Greer <source@mvista.com>
   5  *
   6  * 2004, 2005, 2007 (c) MontaVista Software, Inc. This file is licensed under
   7  * the terms of the GNU General Public License version 2. This program
   8  * is licensed "as is" without any warranty of any kind, whether express
   9  * or implied.
  10  */
  11
  12 #include <stdarg.h>
  13 #include <stddef.h>
  14 #include "types.h"
  15 #include "elf.h"
  16 #include "page.h"
  17 #include "string.h"
  18 #include "stdio.h"
  19 #include "io.h"
  20 #include "ops.h"
  21 #include "mv64x60.h"
  22
  23 #define PCI_DEVFN(slot,func)    ((((slot) & 0x1f) << 3) | ((func) & 0x07))
  24
  25 #define MV64x60_CPU2MEM_WINDOWS                 4
  26 #define MV64x60_CPU2MEM_0_BASE                  0x0008
  27 #define MV64x60_CPU2MEM_0_SIZE                  0x0010
  28 #define MV64x60_CPU2MEM_1_BASE                  0x0208
  29 #define MV64x60_CPU2MEM_1_SIZE                  0x0210
  30 #define MV64x60_CPU2MEM_2_BASE                  0x0018
  31 #define MV64x60_CPU2MEM_2_SIZE                  0x0020
  32 #define MV64x60_CPU2MEM_3_BASE                  0x0218
  33 #define MV64x60_CPU2MEM_3_SIZE                  0x0220
  34
  35 #define MV64x60_ENET2MEM_BAR_ENABLE             0x2290
  36 #define MV64x60_ENET2MEM_0_BASE                 0x2200
  37 #define MV64x60_ENET2MEM_0_SIZE                 0x2204
  38 #define MV64x60_ENET2MEM_1_BASE                 0x2208
  39 #define MV64x60_ENET2MEM_1_SIZE                 0x220c
  40 #define MV64x60_ENET2MEM_2_BASE                 0x2210
  41 #define MV64x60_ENET2MEM_2_SIZE                 0x2214
  42 #define MV64x60_ENET2MEM_3_BASE                 0x2218
  43 #define MV64x60_ENET2MEM_3_SIZE                 0x221c
  44 #define MV64x60_ENET2MEM_4_BASE                 0x2220
  45 #define MV64x60_ENET2MEM_4_SIZE                 0x2224
  46 #define MV64x60_ENET2MEM_5_BASE                 0x2228
  47 #define MV64x60_ENET2MEM_5_SIZE                 0x222c
  48 #define MV64x60_ENET2MEM_ACC_PROT_0             0x2294
  49 #define MV64x60_ENET2MEM_ACC_PROT_1             0x2298
  50 #define MV64x60_ENET2MEM_ACC_PROT_2             0x229c
  51
  52 #define MV64x60_MPSC2MEM_BAR_ENABLE             0xf250
  53 #define MV64x60_MPSC2MEM_0_BASE                 0xf200
  54 #define MV64x60_MPSC2MEM_0_SIZE                 0xf204
  55 #define MV64x60_MPSC2MEM_1_BASE                 0xf208
  56 #define MV64x60_MPSC2MEM_1_SIZE                 0xf20c
  57 #define MV64x60_MPSC2MEM_2_BASE                 0xf210
  58 #define MV64x60_MPSC2MEM_2_SIZE                 0xf214
  59 #define MV64x60_MPSC2MEM_3_BASE                 0xf218
  60 #define MV64x60_MPSC2MEM_3_SIZE                 0xf21c
  61 #define MV64x60_MPSC_0_REMAP                    0xf240
  62 #define MV64x60_MPSC_1_REMAP                    0xf244
  63 #define MV64x60_MPSC2MEM_ACC_PROT_0             0xf254
  64 #define MV64x60_MPSC2MEM_ACC_PROT_1             0xf258
  65 #define MV64x60_MPSC2REGS_BASE                  0xf25c
  66
  67 #define MV64x60_IDMA2MEM_BAR_ENABLE             0x0a80
  68 #define MV64x60_IDMA2MEM_0_BASE                 0x0a00
  69 #define MV64x60_IDMA2MEM_0_SIZE                 0x0a04
  70 #define MV64x60_IDMA2MEM_1_BASE                 0x0a08
  71 #define MV64x60_IDMA2MEM_1_SIZE                 0x0a0c
  72 #define MV64x60_IDMA2MEM_2_BASE                 0x0a10
  73 #define MV64x60_IDMA2MEM_2_SIZE                 0x0a14
  74 #define MV64x60_IDMA2MEM_3_BASE                 0x0a18
  75 #define MV64x60_IDMA2MEM_3_SIZE                 0x0a1c
  76 #define MV64x60_IDMA2MEM_4_BASE                 0x0a20
  77 #define MV64x60_IDMA2MEM_4_SIZE                 0x0a24
  78 #define MV64x60_IDMA2MEM_5_BASE                 0x0a28
  79 #define MV64x60_IDMA2MEM_5_SIZE                 0x0a2c
  80 #define MV64x60_IDMA2MEM_6_BASE                 0x0a30
  81 #define MV64x60_IDMA2MEM_6_SIZE                 0x0a34
  82 #define MV64x60_IDMA2MEM_7_BASE                 0x0a38
  83 #define MV64x60_IDMA2MEM_7_SIZE                 0x0a3c
  84 #define MV64x60_IDMA2MEM_ACC_PROT_0             0x0a70
  85 #define MV64x60_IDMA2MEM_ACC_PROT_1             0x0a74
  86 #define MV64x60_IDMA2MEM_ACC_PROT_2             0x0a78
  87 #define MV64x60_IDMA2MEM_ACC_PROT_3             0x0a7c
  88
  89 #define MV64x60_PCI_ACC_CNTL_WINDOWS            6
  90 #define MV64x60_PCI0_PCI_DECODE_CNTL            0x0d3c
  91 #define MV64x60_PCI1_PCI_DECODE_CNTL            0x0dbc
  92
  93 #define MV64x60_PCI0_BAR_ENABLE                 0x0c3c
  94 #define MV64x60_PCI02MEM_0_SIZE                 0x0c08
  95 #define MV64x60_PCI0_ACC_CNTL_0_BASE_LO         0x1e00
  96 #define MV64x60_PCI0_ACC_CNTL_0_BASE_HI         0x1e04
  97 #define MV64x60_PCI0_ACC_CNTL_0_SIZE            0x1e08
  98 #define MV64x60_PCI0_ACC_CNTL_1_BASE_LO         0x1e10
  99 #define MV64x60_PCI0_ACC_CNTL_1_BASE_HI         0x1e14
 100 #define MV64x60_PCI0_ACC_CNTL_1_SIZE            0x1e18
 101 #define MV64x60_PCI0_ACC_CNTL_2_BASE_LO         0x1e20
 102 #define MV64x60_PCI0_ACC_CNTL_2_BASE_HI         0x1e24
 103 #define MV64x60_PCI0_ACC_CNTL_2_SIZE            0x1e28
 104 #define MV64x60_PCI0_ACC_CNTL_3_BASE_LO         0x1e30
 105 #define MV64x60_PCI0_ACC_CNTL_3_BASE_HI         0x1e34
 106 #define MV64x60_PCI0_ACC_CNTL_3_SIZE            0x1e38
 107 #define MV64x60_PCI0_ACC_CNTL_4_BASE_LO         0x1e40
 108 #define MV64x60_PCI0_ACC_CNTL_4_BASE_HI         0x1e44
 109 #define MV64x60_PCI0_ACC_CNTL_4_SIZE            0x1e48
 110 #define MV64x60_PCI0_ACC_CNTL_5_BASE_LO         0x1e50
 111 #define MV64x60_PCI0_ACC_CNTL_5_BASE_HI         0x1e54
 112 #define MV64x60_PCI0_ACC_CNTL_5_SIZE            0x1e58
 113
 114 #define MV64x60_PCI1_BAR_ENABLE                 0x0cbc
 115 #define MV64x60_PCI12MEM_0_SIZE                 0x0c88
 116 #define MV64x60_PCI1_ACC_CNTL_0_BASE_LO         0x1e80
 117 #define MV64x60_PCI1_ACC_CNTL_0_BASE_HI         0x1e84
 118 #define MV64x60_PCI1_ACC_CNTL_0_SIZE            0x1e88
 119 #define MV64x60_PCI1_ACC_CNTL_1_BASE_LO         0x1e90
 120 #define MV64x60_PCI1_ACC_CNTL_1_BASE_HI         0x1e94
 121 #define MV64x60_PCI1_ACC_CNTL_1_SIZE            0x1e98
 122 #define MV64x60_PCI1_ACC_CNTL_2_BASE_LO         0x1ea0
 123 #define MV64x60_PCI1_ACC_CNTL_2_BASE_HI         0x1ea4
 124 #define MV64x60_PCI1_ACC_CNTL_2_SIZE            0x1ea8
 125 #define MV64x60_PCI1_ACC_CNTL_3_BASE_LO         0x1eb0
 126 #define MV64x60_PCI1_ACC_CNTL_3_BASE_HI         0x1eb4
 127 #define MV64x60_PCI1_ACC_CNTL_3_SIZE            0x1eb8
 128 #define MV64x60_PCI1_ACC_CNTL_4_BASE_LO         0x1ec0
 129 #define MV64x60_PCI1_ACC_CNTL_4_BASE_HI         0x1ec4
 130 #define MV64x60_PCI1_ACC_CNTL_4_SIZE            0x1ec8
 131 #define MV64x60_PCI1_ACC_CNTL_5_BASE_LO         0x1ed0
 132 #define MV64x60_PCI1_ACC_CNTL_5_BASE_HI         0x1ed4
 133 #define MV64x60_PCI1_ACC_CNTL_5_SIZE            0x1ed8
 134
 135 #define MV64x60_CPU2PCI_SWAP_NONE               0x01000000
 136
 137 #define MV64x60_CPU2PCI0_IO_BASE                0x0048
 138 #define MV64x60_CPU2PCI0_IO_SIZE                0x0050
 139 #define MV64x60_CPU2PCI0_IO_REMAP               0x00f0
 140 #define MV64x60_CPU2PCI0_MEM_0_BASE             0x0058
 141 #define MV64x60_CPU2PCI0_MEM_0_SIZE             0x0060
 142 #define MV64x60_CPU2PCI0_MEM_0_REMAP_LO         0x00f8
 143 #define MV64x60_CPU2PCI0_MEM_0_REMAP_HI         0x0320
 144
 145 #define MV64x60_CPU2PCI1_IO_BASE                0x0090
 146 #define MV64x60_CPU2PCI1_IO_SIZE                0x0098
 147 #define MV64x60_CPU2PCI1_IO_REMAP               0x0108
 148 #define MV64x60_CPU2PCI1_MEM_0_BASE             0x00a0
 149 #define MV64x60_CPU2PCI1_MEM_0_SIZE             0x00a8
 150 #define MV64x60_CPU2PCI1_MEM_0_REMAP_LO         0x0110
 151 #define MV64x60_CPU2PCI1_MEM_0_REMAP_HI         0x0340
 152
 153 struct mv64x60_mem_win {
 154         u32 hi;
 155         u32 lo;
 156         u32 size;
 157 };
 158
 159 struct mv64x60_pci_win {
 160         u32 fcn;
 161         u32 hi;
 162         u32 lo;
 163         u32 size;
 164 };
 165
 166 /* PCI config access routines */
 167 struct {
 168         u32 addr;
 169         u32 data;
 170 } static mv64x60_pci_cfgio[2] = {
 171         { /* hose 0 */
 172                 .addr   = 0xcf8,
 173                 .data   = 0xcfc,
 174         },
 175         { /* hose 1 */
 176                 .addr   = 0xc78,
 177                 .data   = 0xc7c,
 178         }
 179 };
 180
 181 u32 mv64x60_cfg_read(u8 *bridge_base, u8 hose, u8 bus, u8 devfn, u8 offset)
 182 {
 183         out_le32((u32 *)(bridge_base + mv64x60_pci_cfgio[hose].addr),
 184                         (1 << 31) | (bus << 16) | (devfn << 8) | offset);
 185         return in_le32((u32 *)(bridge_base + mv64x60_pci_cfgio[hose].data));
 186 }
 187
 188 void mv64x60_cfg_write(u8 *bridge_base, u8 hose, u8 bus, u8 devfn, u8 offset,
 189                 u32 val)
 190 {
 191         out_le32((u32 *)(bridge_base + mv64x60_pci_cfgio[hose].addr),
 192                         (1 << 31) | (bus << 16) | (devfn << 8) | offset);
 193         out_le32((u32 *)(bridge_base + mv64x60_pci_cfgio[hose].data), val);
 194 }
 195
 196 /* I/O ctlr -> system memory setup */
 197 static struct mv64x60_mem_win mv64x60_cpu2mem[MV64x60_CPU2MEM_WINDOWS] = {
 198         {
 199                 .lo     = MV64x60_CPU2MEM_0_BASE,
 200                 .size   = MV64x60_CPU2MEM_0_SIZE,
 201         },
 202         {
 203                 .lo     = MV64x60_CPU2MEM_1_BASE,
 204                 .size   = MV64x60_CPU2MEM_1_SIZE,
 205         },
 206         {
 207                 .lo     = MV64x60_CPU2MEM_2_BASE,
 208                 .size   = MV64x60_CPU2MEM_2_SIZE,
 209         },
 210         {
 211                 .lo     = MV64x60_CPU2MEM_3_BASE,
 212                 .size   = MV64x60_CPU2MEM_3_SIZE,
 213         },
 214 };
 215
 216 static struct mv64x60_mem_win mv64x60_enet2mem[MV64x60_CPU2MEM_WINDOWS] = {
 217         {
 218                 .lo     = MV64x60_ENET2MEM_0_BASE,
 219                 .size   = MV64x60_ENET2MEM_0_SIZE,
 220         },
 221         {
 222                 .lo     = MV64x60_ENET2MEM_1_BASE,
 223                 .size   = MV64x60_ENET2MEM_1_SIZE,
 224         },
 225         {
 226                 .lo     = MV64x60_ENET2MEM_2_BASE,
 227                 .size   = MV64x60_ENET2MEM_2_SIZE,
 228         },
 229         {
 230                 .lo     = MV64x60_ENET2MEM_3_BASE,
 231                 .size   = MV64x60_ENET2MEM_3_SIZE,
 232         },
 233 };
 234
 235 static struct mv64x60_mem_win mv64x60_mpsc2mem[MV64x60_CPU2MEM_WINDOWS] = {
 236         {
 237                 .lo     = MV64x60_MPSC2MEM_0_BASE,
 238                 .size   = MV64x60_MPSC2MEM_0_SIZE,
 239         },
 240         {
 241                 .lo     = MV64x60_MPSC2MEM_1_BASE,
 242                 .size   = MV64x60_MPSC2MEM_1_SIZE,
 243         },
 244         {
 245                 .lo     = MV64x60_MPSC2MEM_2_BASE,
 246                 .size   = MV64x60_MPSC2MEM_2_SIZE,
 247         },
 248         {
 249                 .lo     = MV64x60_MPSC2MEM_3_BASE,
 250                 .size   = MV64x60_MPSC2MEM_3_SIZE,
 251         },
 252 };
 253
 254 static struct mv64x60_mem_win mv64x60_idma2mem[MV64x60_CPU2MEM_WINDOWS] = {
 255         {
 256                 .lo     = MV64x60_IDMA2MEM_0_BASE,
 257                 .size   = MV64x60_IDMA2MEM_0_SIZE,
 258         },
 259         {
 260                 .lo     = MV64x60_IDMA2MEM_1_BASE,
 261                 .size   = MV64x60_IDMA2MEM_1_SIZE,
 262         },
 263         {
 264                 .lo     = MV64x60_IDMA2MEM_2_BASE,
 265                 .size   = MV64x60_IDMA2MEM_2_SIZE,
 266         },
 267         {
 268                 .lo     = MV64x60_IDMA2MEM_3_BASE,
 269                 .size   = MV64x60_IDMA2MEM_3_SIZE,
 270         },
 271 };
 272
 273 static u32 mv64x60_dram_selects[MV64x60_CPU2MEM_WINDOWS] = {0xe,0xd,0xb,0x7};
 274
 275 /*
 276  * ENET, MPSC, and IDMA ctlrs on the MV64x60 have separate windows that
 277  * must be set up so that the respective ctlr can access system memory.
 278  * Configure them to be same as cpu->memory windows.
 279  */
 280 void mv64x60_config_ctlr_windows(u8 *bridge_base, u8 *bridge_pbase,
 281                 u8 is_coherent)
 282 {
 283         u32 i, base, size, enables, prot = 0, snoop_bits = 0;
 284
 285         /* Disable ctlr->mem windows */
 286         out_le32((u32 *)(bridge_base + MV64x60_ENET2MEM_BAR_ENABLE), 0x3f);
 287         out_le32((u32 *)(bridge_base + MV64x60_MPSC2MEM_BAR_ENABLE), 0xf);
 288         out_le32((u32 *)(bridge_base + MV64x60_ENET2MEM_BAR_ENABLE), 0xff);
 289
 290         if (is_coherent)
 291                 snoop_bits = 0x2 << 12; /* Writeback */
 292
 293         enables = in_le32((u32 *)(bridge_base + MV64x60_CPU_BAR_ENABLE)) & 0xf;
 294
 295         for (i=0; i<MV64x60_CPU2MEM_WINDOWS; i++) {
 296                 if (enables & (1 << i)) /* Set means disabled */
 297                         continue;
 298
 299                 base = in_le32((u32 *)(bridge_base + mv64x60_cpu2mem[i].lo))
 300                         << 16;
 301                 base |= snoop_bits | (mv64x60_dram_selects[i] << 8);
 302                 size = in_le32((u32 *)(bridge_base + mv64x60_cpu2mem[i].size))
 303                         << 16;
 304                 prot |= (0x3 << (i << 1)); /* RW access */
 305
 306                 out_le32((u32 *)(bridge_base + mv64x60_enet2mem[i].lo), base);
 307                 out_le32((u32 *)(bridge_base + mv64x60_enet2mem[i].size), size);
 308                 out_le32((u32 *)(bridge_base + mv64x60_mpsc2mem[i].lo), base);
 309                 out_le32((u32 *)(bridge_base + mv64x60_mpsc2mem[i].size), size);
 310                 out_le32((u32 *)(bridge_base + mv64x60_idma2mem[i].lo), base);
 311                 out_le32((u32 *)(bridge_base + mv64x60_idma2mem[i].size), size);
 312         }
 313
 314         out_le32((u32 *)(bridge_base + MV64x60_ENET2MEM_ACC_PROT_0), prot);
 315         out_le32((u32 *)(bridge_base + MV64x60_ENET2MEM_ACC_PROT_1), prot);
 316         out_le32((u32 *)(bridge_base + MV64x60_ENET2MEM_ACC_PROT_2), prot);
 317         out_le32((u32 *)(bridge_base + MV64x60_MPSC2MEM_ACC_PROT_0), prot);
 318         out_le32((u32 *)(bridge_base + MV64x60_MPSC2MEM_ACC_PROT_1), prot);
 319         out_le32((u32 *)(bridge_base + MV64x60_IDMA2MEM_ACC_PROT_0), prot);
 320         out_le32((u32 *)(bridge_base + MV64x60_IDMA2MEM_ACC_PROT_1), prot);
 321         out_le32((u32 *)(bridge_base + MV64x60_IDMA2MEM_ACC_PROT_2), prot);
 322         out_le32((u32 *)(bridge_base + MV64x60_IDMA2MEM_ACC_PROT_3), prot);
 323
 324         /* Set mpsc->bridge's reg window to the bridge's internal registers. */
 325         out_le32((u32 *)(bridge_base + MV64x60_MPSC2REGS_BASE),
 326                         (u32)bridge_pbase);
 327
 328         out_le32((u32 *)(bridge_base + MV64x60_ENET2MEM_BAR_ENABLE), enables);
 329         out_le32((u32 *)(bridge_base + MV64x60_MPSC2MEM_BAR_ENABLE), enables);
 330         out_le32((u32 *)(bridge_base + MV64x60_IDMA2MEM_BAR_ENABLE), enables);
 331 }
 332
 333 /* PCI MEM -> system memory, et. al. setup */
 334 static struct mv64x60_pci_win mv64x60_pci2mem[2] = {
 335         { /* hose 0 */
 336                 .fcn    = 0,
 337                 .hi     = 0x14,
 338                 .lo     = 0x10,
 339                 .size   = MV64x60_PCI02MEM_0_SIZE,
 340         },
 341         { /* hose 1 */
 342                 .fcn    = 0,
 343                 .hi     = 0x94,
 344                 .lo     = 0x90,
 345                 .size   = MV64x60_PCI12MEM_0_SIZE,
 346         },
 347 };
 348
 349 static struct
 350 mv64x60_mem_win mv64x60_pci_acc[2][MV64x60_PCI_ACC_CNTL_WINDOWS] = {
 351         { /* hose 0 */
 352                 {
 353                         .hi     = MV64x60_PCI0_ACC_CNTL_0_BASE_HI,
 354                         .lo     = MV64x60_PCI0_ACC_CNTL_0_BASE_LO,
 355                         .size   = MV64x60_PCI0_ACC_CNTL_0_SIZE,
 356                 },
 357                 {
 358                         .hi     = MV64x60_PCI0_ACC_CNTL_1_BASE_HI,
 359                         .lo     = MV64x60_PCI0_ACC_CNTL_1_BASE_LO,
 360                         .size   = MV64x60_PCI0_ACC_CNTL_1_SIZE,
 361                 },
 362                 {
 363                         .hi     = MV64x60_PCI0_ACC_CNTL_2_BASE_HI,
 364                         .lo     = MV64x60_PCI0_ACC_CNTL_2_BASE_LO,
 365                         .size   = MV64x60_PCI0_ACC_CNTL_2_SIZE,
 366                 },
 367                 {
 368                         .hi     = MV64x60_PCI0_ACC_CNTL_3_BASE_HI,
 369                         .lo     = MV64x60_PCI0_ACC_CNTL_3_BASE_LO,
 370                         .size   = MV64x60_PCI0_ACC_CNTL_3_SIZE,
 371                 },
 372         },
 373         { /* hose 1 */
 374                 {
 375                         .hi     = MV64x60_PCI1_ACC_CNTL_0_BASE_HI,
 376                         .lo     = MV64x60_PCI1_ACC_CNTL_0_BASE_LO,
 377                         .size   = MV64x60_PCI1_ACC_CNTL_0_SIZE,
 378                 },
 379                 {
 380                         .hi     = MV64x60_PCI1_ACC_CNTL_1_BASE_HI,
 381                         .lo     = MV64x60_PCI1_ACC_CNTL_1_BASE_LO,
 382                         .size   = MV64x60_PCI1_ACC_CNTL_1_SIZE,
 383                 },
 384                 {
 385                         .hi     = MV64x60_PCI1_ACC_CNTL_2_BASE_HI,
 386                         .lo     = MV64x60_PCI1_ACC_CNTL_2_BASE_LO,
 387                         .size   = MV64x60_PCI1_ACC_CNTL_2_SIZE,
 388                 },
 389                 {
 390                         .hi     = MV64x60_PCI1_ACC_CNTL_3_BASE_HI,
 391                         .lo     = MV64x60_PCI1_ACC_CNTL_3_BASE_LO,
 392                         .size   = MV64x60_PCI1_ACC_CNTL_3_SIZE,
 393                 },
 394         },
 395 };
 396
 397 static struct mv64x60_mem_win mv64x60_pci2reg[2] = {
 398         {
 399                 .hi     = 0x24,
 400                 .lo     = 0x20,
 401                 .size   = 0,
 402         },
 403         {
 404                 .hi     = 0xa4,
 405                 .lo     = 0xa0,
 406                 .size   = 0,
 407         },
 408 };
 409
 410 /* Only need to use 1 window (per hose) to get access to all of system memory */
 411 void mv64x60_config_pci_windows(u8 *bridge_base, u8 *bridge_pbase, u8 hose,
 412                 u8 bus, u32 mem_size, u32 acc_bits)
 413 {
 414         u32 i, offset, bar_enable, enables;
 415
 416         /* Disable all windows but PCI MEM -> Bridge's regs window */
 417         enables = ~(1 << 9);
 418         bar_enable = hose ? MV64x60_PCI1_BAR_ENABLE : MV64x60_PCI0_BAR_ENABLE;
 419         out_le32((u32 *)(bridge_base + bar_enable), enables);
 420
 421         for (i=0; i<MV64x60_PCI_ACC_CNTL_WINDOWS; i++)
 422                 out_le32((u32 *)(bridge_base + mv64x60_pci_acc[hose][i].lo), 0);
 423
 424         /* If mem_size is 0, leave windows disabled */
 425         if (mem_size == 0)
 426                 return;
 427
 428         /* Cause automatic updates of PCI remap regs */
 429         offset = hose ?
 430                 MV64x60_PCI1_PCI_DECODE_CNTL : MV64x60_PCI0_PCI_DECODE_CNTL;
 431         i = in_le32((u32 *)(bridge_base + offset));
 432         out_le32((u32 *)(bridge_base + offset), i & ~0x1);
 433
 434         mem_size = (mem_size - 1) & 0xfffff000;
 435
 436         /* Map PCI MEM addr 0 -> System Mem addr 0 */
 437         mv64x60_cfg_write(bridge_base, hose, bus,
 438                         PCI_DEVFN(0, mv64x60_pci2mem[hose].fcn),
 439                         mv64x60_pci2mem[hose].hi, 0);
 440         mv64x60_cfg_write(bridge_base, hose, bus,
 441                         PCI_DEVFN(0, mv64x60_pci2mem[hose].fcn),
 442                         mv64x60_pci2mem[hose].lo, 0);
 443         out_le32((u32 *)(bridge_base + mv64x60_pci2mem[hose].size),mem_size);
 444
 445         acc_bits |= MV64x60_PCI_ACC_CNTL_ENABLE;
 446         out_le32((u32 *)(bridge_base + mv64x60_pci_acc[hose][0].hi), 0);
 447         out_le32((u32 *)(bridge_base + mv64x60_pci_acc[hose][0].lo), acc_bits);
 448         out_le32((u32 *)(bridge_base + mv64x60_pci_acc[hose][0].size),mem_size);
 449
 450         /* Set PCI MEM->bridge's reg window to where they are in CPU mem map */
 451         i = (u32)bridge_base;
 452         i &= 0xffff0000;
 453         i |= (0x2 << 1);
 454         mv64x60_cfg_write(bridge_base, hose, bus, PCI_DEVFN(0,0),
 455                         mv64x60_pci2reg[hose].hi, 0);
 456         mv64x60_cfg_write(bridge_base, hose, bus, PCI_DEVFN(0,0),
 457                         mv64x60_pci2reg[hose].lo, i);
 458
 459         enables &= ~0x1; /* Enable PCI MEM -> System Mem window 0 */
 460         out_le32((u32 *)(bridge_base + bar_enable), enables);
 461 }
 462
 463 /* CPU -> PCI I/O & MEM setup */
 464 struct mv64x60_cpu2pci_win mv64x60_cpu2pci_io[2] = {
 465         { /* hose 0 */
 466                 .lo             = MV64x60_CPU2PCI0_IO_BASE,
 467                 .size           = MV64x60_CPU2PCI0_IO_SIZE,
 468                 .remap_hi       = 0,
 469                 .remap_lo       = MV64x60_CPU2PCI0_IO_REMAP,
 470         },
 471         { /* hose 1 */
 472                 .lo             = MV64x60_CPU2PCI1_IO_BASE,
 473                 .size           = MV64x60_CPU2PCI1_IO_SIZE,
 474                 .remap_hi       = 0,
 475                 .remap_lo       = MV64x60_CPU2PCI1_IO_REMAP,
 476         },
 477 };
 478
 479 struct mv64x60_cpu2pci_win mv64x60_cpu2pci_mem[2] = {
 480         { /* hose 0 */
 481                 .lo             = MV64x60_CPU2PCI0_MEM_0_BASE,
 482                 .size           = MV64x60_CPU2PCI0_MEM_0_SIZE,
 483                 .remap_hi       = MV64x60_CPU2PCI0_MEM_0_REMAP_HI,
 484                 .remap_lo       = MV64x60_CPU2PCI0_MEM_0_REMAP_LO,
 485         },
 486         { /* hose 1 */
 487                 .lo             = MV64x60_CPU2PCI1_MEM_0_BASE,
 488                 .size           = MV64x60_CPU2PCI1_MEM_0_SIZE,
 489                 .remap_hi       = MV64x60_CPU2PCI1_MEM_0_REMAP_HI,
 490                 .remap_lo       = MV64x60_CPU2PCI1_MEM_0_REMAP_LO,
 491         },
 492 };
 493
 494 /* Only need to set up 1 window to pci mem space */
 495 void mv64x60_config_cpu2pci_window(u8 *bridge_base, u8 hose, u32 pci_base_hi,
 496                 u32 pci_base_lo, u32 cpu_base, u32 size,
 497                 struct mv64x60_cpu2pci_win *offset_tbl)
 498 {
 499         cpu_base >>= 16;
 500         cpu_base |= MV64x60_CPU2PCI_SWAP_NONE;
 501         out_le32((u32 *)(bridge_base + offset_tbl[hose].lo), cpu_base);
 502
 503         if (offset_tbl[hose].remap_hi != 0)
 504                 out_le32((u32 *)(bridge_base + offset_tbl[hose].remap_hi),
 505                                 pci_base_hi);
 506         out_le32((u32 *)(bridge_base + offset_tbl[hose].remap_lo),
 507                         pci_base_lo >> 16);
 508
 509         size = (size - 1) >> 16;
 510         out_le32((u32 *)(bridge_base + offset_tbl[hose].size), size);
 511 }
 512
 513 /* Read mem ctlr to get the amount of mem in system */
 514 u32 mv64x60_get_mem_size(u8 *bridge_base)
 515 {
 516         u32 enables, i, v;
 517         u32 mem = 0;
 518
 519         enables = in_le32((u32 *)(bridge_base + MV64x60_CPU_BAR_ENABLE)) & 0xf;
 520
 521         for (i=0; i<MV64x60_CPU2MEM_WINDOWS; i++)
 522                 if (!(enables & (1<<i))) {
 523                         v = in_le32((u32*)(bridge_base
 524                                                 + mv64x60_cpu2mem[i].size));
 525                         v = ((v & 0xffff) + 1) << 16;
 526                         mem += v;
 527                 }
 528
 529         return mem;
 530 }
 531
 532 /* Get physical address of bridge's registers */
 533 u8 *mv64x60_get_bridge_pbase(void)
 534 {
 535         u32 v[2];
 536         void *devp;
 537
 538         devp = finddevice("/mv64x60");
 539         if (devp == NULL)
 540                 goto err_out;
 541         if (getprop(devp, "reg", v, sizeof(v)) != sizeof(v))
 542                 goto err_out;
 543
 544         return (u8 *)v[0];
 545
 546 err_out:
 547         return 0;
 548 }
 549
 550 /* Get virtual address of bridge's registers */
 551 u8 *mv64x60_get_bridge_base(void)
 552 {
 553         u32 v;
 554         void *devp;
 555
 556         devp = finddevice("/mv64x60");
 557         if (devp == NULL)
 558                 goto err_out;
 559         if (getprop(devp, "virtual-reg", &v, sizeof(v)) != sizeof(v))
 560                 goto err_out;
 561
 562         return (u8 *)v;
 563
 564 err_out:
 565         return 0;
 566 }
 567
 568 u8 mv64x60_is_coherent(void)
 569 {
 570         u32 v;
 571         void *devp;
 572
 573         devp = finddevice("/");
 574         if (devp == NULL)
 575                 return 1; /* Assume coherency on */
 576
 577         if (getprop(devp, "coherency-off", &v, sizeof(v)) < 0)
 578                 return 1; /* Coherency on */
 579         else
 580                 return 0;
 581 }