| /* | |
| * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) | |
| * | |
| * This program is free software; you can redistribute it and/or modify | |
| * it under the terms of the GNU General Public License version 2 as | |
| * published by the Free Software Foundation. | |
| */ | |
| #ifndef _ASM_ARC_ARCREGS_H | |
| #define _ASM_ARC_ARCREGS_H | |
| #ifdef __KERNEL__ | |
| /* Build Configuration Registers */ | |
| #define ARC_REG_DCCMBASE_BCR 0x61 /* DCCM Base Addr */ | |
| #define ARC_REG_CRC_BCR 0x62 | |
| #define ARC_REG_DVFB_BCR 0x64 | |
| #define ARC_REG_EXTARITH_BCR 0x65 | |
| #define ARC_REG_VECBASE_BCR 0x68 | |
| #define ARC_REG_PERIBASE_BCR 0x69 | |
| #define ARC_REG_FP_BCR 0x6B /* Single-Precision FPU */ | |
| #define ARC_REG_DPFP_BCR 0x6C /* Dbl Precision FPU */ | |
| #define ARC_REG_DCCM_BCR 0x74 /* DCCM Present + SZ */ | |
| #define ARC_REG_TIMERS_BCR 0x75 | |
| #define ARC_REG_ICCM_BCR 0x78 | |
| #define ARC_REG_XY_MEM_BCR 0x79 | |
| #define ARC_REG_MAC_BCR 0x7a | |
| #define ARC_REG_MUL_BCR 0x7b | |
| #define ARC_REG_SWAP_BCR 0x7c | |
| #define ARC_REG_NORM_BCR 0x7d | |
| #define ARC_REG_MIXMAX_BCR 0x7e | |
| #define ARC_REG_BARREL_BCR 0x7f | |
| #define ARC_REG_D_UNCACH_BCR 0x6A | |
| /* status32 Bits Positions */ | |
| #define STATUS_AE_BIT 5 /* Exception active */ | |
| #define STATUS_DE_BIT 6 /* PC is in delay slot */ | |
| #define STATUS_U_BIT 7 /* User/Kernel mode */ | |
| #define STATUS_L_BIT 12 /* Loop inhibit */ | |
| /* These masks correspond to the status word(STATUS_32) bits */ | |
| #define STATUS_AE_MASK (1<<STATUS_AE_BIT) | |
| #define STATUS_DE_MASK (1<<STATUS_DE_BIT) | |
| #define STATUS_U_MASK (1<<STATUS_U_BIT) | |
| #define STATUS_L_MASK (1<<STATUS_L_BIT) | |
| /* | |
| * ECR: Exception Cause Reg bits-n-pieces | |
| * [23:16] = Exception Vector | |
| * [15: 8] = Exception Cause Code | |
| * [ 7: 0] = Exception Parameters (for certain types only) | |
| */ | |
| #define ECR_VEC_MASK 0xff0000 | |
| #define ECR_CODE_MASK 0x00ff00 | |
| #define ECR_PARAM_MASK 0x0000ff | |
| /* Exception Cause Vector Values */ | |
| #define ECR_V_INSN_ERR 0x02 | |
| #define ECR_V_MACH_CHK 0x20 | |
| #define ECR_V_ITLB_MISS 0x21 | |
| #define ECR_V_DTLB_MISS 0x22 | |
| #define ECR_V_PROTV 0x23 | |
| #define ECR_V_TRAP 0x25 | |
| /* Protection Violation Exception Cause Code Values */ | |
| #define ECR_C_PROTV_INST_FETCH 0x00 | |
| #define ECR_C_PROTV_LOAD 0x01 | |
| #define ECR_C_PROTV_STORE 0x02 | |
| #define ECR_C_PROTV_XCHG 0x03 | |
| #define ECR_C_PROTV_MISALIG_DATA 0x04 | |
| #define ECR_C_BIT_PROTV_MISALIG_DATA 10 | |
| /* Machine Check Cause Code Values */ | |
| #define ECR_C_MCHK_DUP_TLB 0x01 | |
| /* DTLB Miss Exception Cause Code Values */ | |
| #define ECR_C_BIT_DTLB_LD_MISS 8 | |
| #define ECR_C_BIT_DTLB_ST_MISS 9 | |
| /* Dummy ECR values for Interrupts */ | |
| #define event_IRQ1 0x0031abcd | |
| #define event_IRQ2 0x0032abcd | |
| /* Auxiliary registers */ | |
| #define AUX_IDENTITY 4 | |
| #define AUX_INTR_VEC_BASE 0x25 | |
| /* | |
| * Floating Pt Registers | |
| * Status regs are read-only (build-time) so need not be saved/restored | |
| */ | |
| #define ARC_AUX_FP_STAT 0x300 | |
| #define ARC_AUX_DPFP_1L 0x301 | |
| #define ARC_AUX_DPFP_1H 0x302 | |
| #define ARC_AUX_DPFP_2L 0x303 | |
| #define ARC_AUX_DPFP_2H 0x304 | |
| #define ARC_AUX_DPFP_STAT 0x305 | |
| #ifndef __ASSEMBLY__ | |
| /* | |
| ****************************************************************** | |
| * Inline ASM macros to read/write AUX Regs | |
| * Essentially invocation of lr/sr insns from "C" | |
| */ | |
| #if 1 | |
| #define read_aux_reg(reg) __builtin_arc_lr(reg) | |
| /* gcc builtin sr needs reg param to be long immediate */ | |
| #define write_aux_reg(reg_immed, val) \ | |
| __builtin_arc_sr((unsigned int)val, reg_immed) | |
| #else | |
| #define read_aux_reg(reg) \ | |
| ({ \ | |
| unsigned int __ret; \ | |
| __asm__ __volatile__( \ | |
| " lr %0, [%1]" \ | |
| : "=r"(__ret) \ | |
| : "i"(reg)); \ | |
| __ret; \ | |
| }) | |
| /* | |
| * Aux Reg address is specified as long immediate by caller | |
| * e.g. | |
| * write_aux_reg(0x69, some_val); | |
| * This generates tightest code. | |
| */ | |
| #define write_aux_reg(reg_imm, val) \ | |
| ({ \ | |
| __asm__ __volatile__( \ | |
| " sr %0, [%1] \n" \ | |
| : \ | |
| : "ir"(val), "i"(reg_imm)); \ | |
| }) | |
| /* | |
| * Aux Reg address is specified in a variable | |
| * * e.g. | |
| * reg_num = 0x69 | |
| * write_aux_reg2(reg_num, some_val); | |
| * This has to generate glue code to load the reg num from | |
| * memory to a reg hence not recommended. | |
| */ | |
| #define write_aux_reg2(reg_in_var, val) \ | |
| ({ \ | |
| unsigned int tmp; \ | |
| \ | |
| __asm__ __volatile__( \ | |
| " ld %0, [%2] \n\t" \ | |
| " sr %1, [%0] \n\t" \ | |
| : "=&r"(tmp) \ | |
| : "r"(val), "memory"(®_in_var)); \ | |
| }) | |
| #endif | |
| #define READ_BCR(reg, into) \ | |
| { \ | |
| unsigned int tmp; \ | |
| tmp = read_aux_reg(reg); \ | |
| if (sizeof(tmp) == sizeof(into)) { \ | |
| into = *((typeof(into) *)&tmp); \ | |
| } else { \ | |
| extern void bogus_undefined(void); \ | |
| bogus_undefined(); \ | |
| } \ | |
| } | |
| #define WRITE_BCR(reg, into) \ | |
| { \ | |
| unsigned int tmp; \ | |
| if (sizeof(tmp) == sizeof(into)) { \ | |
| tmp = (*(unsigned int *)(into)); \ | |
| write_aux_reg(reg, tmp); \ | |
| } else { \ | |
| extern void bogus_undefined(void); \ | |
| bogus_undefined(); \ | |
| } \ | |
| } | |
| /* Helpers */ | |
| #define TO_KB(bytes) ((bytes) >> 10) | |
| #define TO_MB(bytes) (TO_KB(bytes) >> 10) | |
| #define PAGES_TO_KB(n_pages) ((n_pages) << (PAGE_SHIFT - 10)) | |
| #define PAGES_TO_MB(n_pages) (PAGES_TO_KB(n_pages) >> 10) | |
| #ifdef CONFIG_ARC_FPU_SAVE_RESTORE | |
| /* These DPFP regs need to be saved/restored across ctx-sw */ | |
| struct arc_fpu { | |
| struct { | |
| unsigned int l, h; | |
| } aux_dpfp[2]; | |
| }; | |
| #endif | |
| /* | |
| *************************************************************** | |
| * Build Configuration Registers, with encoded hardware config | |
| */ | |
| struct bcr_identity { | |
| #ifdef CONFIG_CPU_BIG_ENDIAN | |
| unsigned int chip_id:16, cpu_id:8, family:8; | |
| #else | |
| unsigned int family:8, cpu_id:8, chip_id:16; | |
| #endif | |
| }; | |
| #define EXTN_SWAP_VALID 0x1 | |
| #define EXTN_NORM_VALID 0x2 | |
| #define EXTN_MINMAX_VALID 0x2 | |
| #define EXTN_BARREL_VALID 0x2 | |
| struct bcr_extn { | |
| #ifdef CONFIG_CPU_BIG_ENDIAN | |
| unsigned int pad:20, crc:1, ext_arith:2, mul:2, barrel:2, minmax:2, | |
| norm:2, swap:1; | |
| #else | |
| unsigned int swap:1, norm:2, minmax:2, barrel:2, mul:2, ext_arith:2, | |
| crc:1, pad:20; | |
| #endif | |
| }; | |
| /* DSP Options Ref Manual */ | |
| struct bcr_extn_mac_mul { | |
| #ifdef CONFIG_CPU_BIG_ENDIAN | |
| unsigned int pad:16, type:8, ver:8; | |
| #else | |
| unsigned int ver:8, type:8, pad:16; | |
| #endif | |
| }; | |
| struct bcr_extn_xymem { | |
| #ifdef CONFIG_CPU_BIG_ENDIAN | |
| unsigned int ram_org:2, num_banks:4, bank_sz:4, ver:8; | |
| #else | |
| unsigned int ver:8, bank_sz:4, num_banks:4, ram_org:2; | |
| #endif | |
| }; | |
| struct bcr_perip { | |
| #ifdef CONFIG_CPU_BIG_ENDIAN | |
| unsigned int start:8, pad2:8, sz:8, pad:8; | |
| #else | |
| unsigned int pad:8, sz:8, pad2:8, start:8; | |
| #endif | |
| }; | |
| struct bcr_iccm { | |
| #ifdef CONFIG_CPU_BIG_ENDIAN | |
| unsigned int base:16, pad:5, sz:3, ver:8; | |
| #else | |
| unsigned int ver:8, sz:3, pad:5, base:16; | |
| #endif | |
| }; | |
| /* DCCM Base Address Register: ARC_REG_DCCMBASE_BCR */ | |
| struct bcr_dccm_base { | |
| #ifdef CONFIG_CPU_BIG_ENDIAN | |
| unsigned int addr:24, ver:8; | |
| #else | |
| unsigned int ver:8, addr:24; | |
| #endif | |
| }; | |
| /* DCCM RAM Configuration Register: ARC_REG_DCCM_BCR */ | |
| struct bcr_dccm { | |
| #ifdef CONFIG_CPU_BIG_ENDIAN | |
| unsigned int res:21, sz:3, ver:8; | |
| #else | |
| unsigned int ver:8, sz:3, res:21; | |
| #endif | |
| }; | |
| /* Both SP and DP FPU BCRs have same format */ | |
| struct bcr_fp { | |
| #ifdef CONFIG_CPU_BIG_ENDIAN | |
| unsigned int fast:1, ver:8; | |
| #else | |
| unsigned int ver:8, fast:1; | |
| #endif | |
| }; | |
| /* | |
| ******************************************************************* | |
| * Generic structures to hold build configuration used at runtime | |
| */ | |
| struct cpuinfo_arc_mmu { | |
| unsigned int ver, pg_sz, sets, ways, u_dtlb, u_itlb, num_tlb; | |
| }; | |
| struct cpuinfo_arc_cache { | |
| unsigned int sz, line_len, assoc, ver; | |
| }; | |
| struct cpuinfo_arc_ccm { | |
| unsigned int base_addr, sz; | |
| }; | |
| struct cpuinfo_arc { | |
| struct cpuinfo_arc_cache icache, dcache; | |
| struct cpuinfo_arc_mmu mmu; | |
| struct bcr_identity core; | |
| unsigned int timers; | |
| unsigned int vec_base; | |
| unsigned int uncached_base; | |
| struct cpuinfo_arc_ccm iccm, dccm; | |
| struct bcr_extn extn; | |
| struct bcr_extn_xymem extn_xymem; | |
| struct bcr_extn_mac_mul extn_mac_mul; | |
| struct bcr_fp fp, dpfp; | |
| }; | |
| extern struct cpuinfo_arc cpuinfo_arc700[]; | |
| #endif /* __ASEMBLY__ */ | |
| #endif /* __KERNEL__ */ | |
| #endif /* _ASM_ARC_ARCREGS_H */ |