arch/arc/include/asm/arcregs.h

   1 /*
   2  * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  */
   8
   9 #ifndef _ASM_ARC_ARCREGS_H
  10 #define _ASM_ARC_ARCREGS_H
  11
  12 /* Build Configuration Registers */
  13 #define ARC_REG_AUX_DCCM        0x18    /* DCCM Base Addr ARCv2 */
  14 #define ARC_REG_ERP_CTRL        0x3F    /* ARCv2 Error protection control */
  15 #define ARC_REG_DCCM_BASE_BUILD 0x61    /* DCCM Base Addr ARCompact */
  16 #define ARC_REG_CRC_BCR         0x62
  17 #define ARC_REG_VECBASE_BCR     0x68
  18 #define ARC_REG_PERIBASE_BCR    0x69
  19 #define ARC_REG_FP_BCR          0x6B    /* ARCompact: Single-Precision FPU */
  20 #define ARC_REG_DPFP_BCR        0x6C    /* ARCompact: Dbl Precision FPU */
  21 #define ARC_REG_ERP_BUILD       0xc7    /* ARCv2 Error protection Build: ECC/Parity */
  22 #define ARC_REG_FP_V2_BCR       0xc8    /* ARCv2 FPU */
  23 #define ARC_REG_SLC_BCR         0xce
  24 #define ARC_REG_DCCM_BUILD      0x74    /* DCCM size (common) */
  25 #define ARC_REG_AP_BCR          0x76
  26 #define ARC_REG_ICCM_BUILD      0x78    /* ICCM size (common) */
  27 #define ARC_REG_XY_MEM_BCR      0x79
  28 #define ARC_REG_MAC_BCR         0x7a
  29 #define ARC_REG_MUL_BCR         0x7b
  30 #define ARC_REG_SWAP_BCR        0x7c
  31 #define ARC_REG_NORM_BCR        0x7d
  32 #define ARC_REG_MIXMAX_BCR      0x7e
  33 #define ARC_REG_BARREL_BCR      0x7f
  34 #define ARC_REG_D_UNCACH_BCR    0x6A
  35 #define ARC_REG_BPU_BCR         0xc0
  36 #define ARC_REG_ISA_CFG_BCR     0xc1
  37 #define ARC_REG_LPB_BUILD       0xE9    /* ARCv2 Loop Buffer Build */
  38 #define ARC_REG_RTT_BCR         0xF2
  39 #define ARC_REG_IRQ_BCR         0xF3
  40 #define ARC_REG_MICRO_ARCH_BCR  0xF9    /* ARCv2 Product revision */
  41 #define ARC_REG_SMART_BCR       0xFF
  42 #define ARC_REG_CLUSTER_BCR     0xcf
  43 #define ARC_REG_AUX_ICCM        0x208   /* ICCM Base Addr (ARCv2) */
  44 #define ARC_REG_LPB_CTRL        0x488   /* ARCv2 Loop Buffer control */
  45
  46 /* Common for ARCompact and ARCv2 status register */
  47 #define ARC_REG_STATUS32        0x0A
  48
  49 /* status32 Bits Positions */
  50 #define STATUS_AE_BIT           5       /* Exception active */
  51 #define STATUS_DE_BIT           6       /* PC is in delay slot */
  52 #define STATUS_U_BIT            7       /* User/Kernel mode */
  53 #define STATUS_Z_BIT            11
  54 #define STATUS_L_BIT            12      /* Loop inhibit */
  55
  56 /* These masks correspond to the status word(STATUS_32) bits */
  57 #define STATUS_AE_MASK          (1<<STATUS_AE_BIT)
  58 #define STATUS_DE_MASK          (1<<STATUS_DE_BIT)
  59 #define STATUS_U_MASK           (1<<STATUS_U_BIT)
  60 #define STATUS_Z_MASK           (1<<STATUS_Z_BIT)
  61 #define STATUS_L_MASK           (1<<STATUS_L_BIT)
  62
  63 /*
  64  * ECR: Exception Cause Reg bits-n-pieces
  65  * [23:16] = Exception Vector
  66  * [15: 8] = Exception Cause Code
  67  * [ 7: 0] = Exception Parameters (for certain types only)
  68  */
  69 #ifdef CONFIG_ISA_ARCOMPACT
  70 #define ECR_V_MEM_ERR                   0x01
  71 #define ECR_V_INSN_ERR                  0x02
  72 #define ECR_V_MACH_CHK                  0x20
  73 #define ECR_V_ITLB_MISS                 0x21
  74 #define ECR_V_DTLB_MISS                 0x22
  75 #define ECR_V_PROTV                     0x23
  76 #define ECR_V_TRAP                      0x25
  77 #else
  78 #define ECR_V_MEM_ERR                   0x01
  79 #define ECR_V_INSN_ERR                  0x02
  80 #define ECR_V_MACH_CHK                  0x03
  81 #define ECR_V_ITLB_MISS                 0x04
  82 #define ECR_V_DTLB_MISS                 0x05
  83 #define ECR_V_PROTV                     0x06
  84 #define ECR_V_TRAP                      0x09
  85 #endif
  86
  87 /* DTLB Miss and Protection Violation Cause Codes */
  88
  89 #define ECR_C_PROTV_INST_FETCH          0x00
  90 #define ECR_C_PROTV_LOAD                0x01
  91 #define ECR_C_PROTV_STORE               0x02
  92 #define ECR_C_PROTV_XCHG                0x03
  93 #define ECR_C_PROTV_MISALIG_DATA        0x04
  94
  95 #define ECR_C_BIT_PROTV_MISALIG_DATA    10
  96
  97 /* Machine Check Cause Code Values */
  98 #define ECR_C_MCHK_DUP_TLB              0x01
  99
 100 /* DTLB Miss Exception Cause Code Values */
 101 #define ECR_C_BIT_DTLB_LD_MISS          8
 102 #define ECR_C_BIT_DTLB_ST_MISS          9
 103
 104 /* Auxiliary registers */
 105 #define AUX_IDENTITY            4
 106 #define AUX_EXEC_CTRL           8
 107 #define AUX_INTR_VEC_BASE       0x25
 108 #define AUX_VOL                 0x5e
 109
 110 /*
 111  * Floating Pt Registers
 112  * Status regs are read-only (build-time) so need not be saved/restored
 113  */
 114 #define ARC_AUX_FP_STAT         0x300
 115 #define ARC_AUX_DPFP_1L         0x301
 116 #define ARC_AUX_DPFP_1H         0x302
 117 #define ARC_AUX_DPFP_2L         0x303
 118 #define ARC_AUX_DPFP_2H         0x304
 119 #define ARC_AUX_DPFP_STAT       0x305
 120
 121 #ifndef __ASSEMBLY__
 122
 123 #include <soc/arc/aux.h>
 124
 125 /* Helpers */
 126 #define TO_KB(bytes)            ((bytes) >> 10)
 127 #define TO_MB(bytes)            (TO_KB(bytes) >> 10)
 128 #define PAGES_TO_KB(n_pages)    ((n_pages) << (PAGE_SHIFT - 10))
 129 #define PAGES_TO_MB(n_pages)    (PAGES_TO_KB(n_pages) >> 10)
 130
 131
 132 /*
 133  ***************************************************************
 134  * Build Configuration Registers, with encoded hardware config
 135  */
 136 struct bcr_identity {
 137 #ifdef CONFIG_CPU_BIG_ENDIAN
 138         unsigned int chip_id:16, cpu_id:8, family:8;
 139 #else
 140         unsigned int family:8, cpu_id:8, chip_id:16;
 141 #endif
 142 };
 143
 144 struct bcr_isa_arcv2 {
 145 #ifdef CONFIG_CPU_BIG_ENDIAN
 146         unsigned int div_rem:4, pad2:4, ldd:1, unalign:1, atomic:1, be:1,
 147                      pad1:12, ver:8;
 148 #else
 149         unsigned int ver:8, pad1:12, be:1, atomic:1, unalign:1,
 150                      ldd:1, pad2:4, div_rem:4;
 151 #endif
 152 };
 153
 154 struct bcr_mpy {
 155 #ifdef CONFIG_CPU_BIG_ENDIAN
 156         unsigned int pad:8, x1616:8, dsp:4, cycles:2, type:2, ver:8;
 157 #else
 158         unsigned int ver:8, type:2, cycles:2, dsp:4, x1616:8, pad:8;
 159 #endif
 160 };
 161
 162 struct bcr_extn_xymem {
 163 #ifdef CONFIG_CPU_BIG_ENDIAN
 164         unsigned int ram_org:2, num_banks:4, bank_sz:4, ver:8;
 165 #else
 166         unsigned int ver:8, bank_sz:4, num_banks:4, ram_org:2;
 167 #endif
 168 };
 169
 170 struct bcr_iccm_arcompact {
 171 #ifdef CONFIG_CPU_BIG_ENDIAN
 172         unsigned int base:16, pad:5, sz:3, ver:8;
 173 #else
 174         unsigned int ver:8, sz:3, pad:5, base:16;
 175 #endif
 176 };
 177
 178 struct bcr_iccm_arcv2 {
 179 #ifdef CONFIG_CPU_BIG_ENDIAN
 180         unsigned int pad:8, sz11:4, sz01:4, sz10:4, sz00:4, ver:8;
 181 #else
 182         unsigned int ver:8, sz00:4, sz10:4, sz01:4, sz11:4, pad:8;
 183 #endif
 184 };
 185
 186 struct bcr_dccm_arcompact {
 187 #ifdef CONFIG_CPU_BIG_ENDIAN
 188         unsigned int res:21, sz:3, ver:8;
 189 #else
 190         unsigned int ver:8, sz:3, res:21;
 191 #endif
 192 };
 193
 194 struct bcr_dccm_arcv2 {
 195 #ifdef CONFIG_CPU_BIG_ENDIAN
 196         unsigned int pad2:12, cyc:3, pad1:1, sz1:4, sz0:4, ver:8;
 197 #else
 198         unsigned int ver:8, sz0:4, sz1:4, pad1:1, cyc:3, pad2:12;
 199 #endif
 200 };
 201
 202 /* ARCompact: Both SP and DP FPU BCRs have same format */
 203 struct bcr_fp_arcompact {
 204 #ifdef CONFIG_CPU_BIG_ENDIAN
 205         unsigned int fast:1, ver:8;
 206 #else
 207         unsigned int ver:8, fast:1;
 208 #endif
 209 };
 210
 211 struct bcr_fp_arcv2 {
 212 #ifdef CONFIG_CPU_BIG_ENDIAN
 213         unsigned int pad2:15, dp:1, pad1:7, sp:1, ver:8;
 214 #else
 215         unsigned int ver:8, sp:1, pad1:7, dp:1, pad2:15;
 216 #endif
 217 };
 218
 219 #include <soc/arc/timers.h>
 220
 221 struct bcr_bpu_arcompact {
 222 #ifdef CONFIG_CPU_BIG_ENDIAN
 223         unsigned int pad2:19, fam:1, pad:2, ent:2, ver:8;
 224 #else
 225         unsigned int ver:8, ent:2, pad:2, fam:1, pad2:19;
 226 #endif
 227 };
 228
 229 struct bcr_bpu_arcv2 {
 230 #ifdef CONFIG_CPU_BIG_ENDIAN
 231         unsigned int pad:6, fbe:2, tqe:2, ts:4, ft:1, rse:2, pte:3, bce:3, ver:8;
 232 #else
 233         unsigned int ver:8, bce:3, pte:3, rse:2, ft:1, ts:4, tqe:2, fbe:2, pad:6;
 234 #endif
 235 };
 236
 237 /* Error Protection Build: ECC/Parity */
 238 struct bcr_erp {
 239 #ifdef CONFIG_CPU_BIG_ENDIAN
 240         unsigned int pad3:5, mmu:3, pad2:4, ic:3, dc:3, pad1:6, ver:8;
 241 #else
 242         unsigned int ver:8, pad1:6, dc:3, ic:3, pad2:4, mmu:3, pad3:5;
 243 #endif
 244 };
 245
 246 /* Error Protection Control */
 247 struct ctl_erp {
 248 #ifdef CONFIG_CPU_BIG_ENDIAN
 249         unsigned int pad2:27, mpd:1, pad1:2, dpd:1, dpi:1;
 250 #else
 251         unsigned int dpi:1, dpd:1, pad1:2, mpd:1, pad2:27;
 252 #endif
 253 };
 254
 255 struct bcr_lpb {
 256 #ifdef CONFIG_CPU_BIG_ENDIAN
 257         unsigned int pad:16, entries:8, ver:8;
 258 #else
 259         unsigned int ver:8, entries:8, pad:16;
 260 #endif
 261 };
 262
 263 struct bcr_generic {
 264 #ifdef CONFIG_CPU_BIG_ENDIAN
 265         unsigned int info:24, ver:8;
 266 #else
 267         unsigned int ver:8, info:24;
 268 #endif
 269 };
 270
 271 /*
 272  *******************************************************************
 273  * Generic structures to hold build configuration used at runtime
 274  */
 275
 276 struct cpuinfo_arc_mmu {
 277         unsigned int ver:4, pg_sz_k:8, s_pg_sz_m:8, pad:10, sasid:1, pae:1;
 278         unsigned int sets:12, ways:4, u_dtlb:8, u_itlb:8;
 279 };
 280
 281 struct cpuinfo_arc_cache {
 282         unsigned int sz_k:14, line_len:8, assoc:4, alias:1, vipt:1, pad:4;
 283 };
 284
 285 struct cpuinfo_arc_bpu {
 286         unsigned int ver, full, num_cache, num_pred;
 287 };
 288
 289 struct cpuinfo_arc_ccm {
 290         unsigned int base_addr, sz;
 291 };
 292
 293 struct cpuinfo_arc {
 294         struct cpuinfo_arc_cache icache, dcache, slc;
 295         struct cpuinfo_arc_mmu mmu;
 296         struct cpuinfo_arc_bpu bpu;
 297         struct bcr_identity core;
 298         struct bcr_isa_arcv2 isa;
 299         const char *details, *name;
 300         unsigned int vec_base;
 301         struct cpuinfo_arc_ccm iccm, dccm;
 302         struct {
 303                 unsigned int swap:1, norm:1, minmax:1, barrel:1, crc:1, swape:1, pad1:2,
 304                              fpu_sp:1, fpu_dp:1, dual:1, dual_enb:1, pad2:4,
 305                              debug:1, ap:1, smart:1, rtt:1, pad3:4,
 306                              timer0:1, timer1:1, rtc:1, gfrc:1, pad4:4;
 307         } extn;
 308         struct bcr_mpy extn_mpy;
 309         struct bcr_extn_xymem extn_xymem;
 310 };
 311
 312 extern struct cpuinfo_arc cpuinfo_arc700[];
 313
 314 static inline int is_isa_arcv2(void)
 315 {
 316         return IS_ENABLED(CONFIG_ISA_ARCV2);
 317 }
 318
 319 static inline int is_isa_arcompact(void)
 320 {
 321         return IS_ENABLED(CONFIG_ISA_ARCOMPACT);
 322 }
 323
 324 #endif /* __ASEMBLY__ */
 325
 326 #endif /* _ASM_ARC_ARCREGS_H */