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/*
* 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
/* Build Configuration Registers */
#define ARC_REG_DCCMBASE_BCR 0x61 /* DCCM Base Addr */
#define ARC_REG_CRC_BCR 0x62
#define ARC_REG_VECBASE_BCR 0x68
#define ARC_REG_PERIBASE_BCR 0x69
#define ARC_REG_FP_BCR 0x6B /* ARCompact: Single-Precision FPU */
#define ARC_REG_DPFP_BCR 0x6C /* ARCompact: Dbl Precision FPU */
#define ARC_REG_FP_V2_BCR 0xc8 /* ARCv2 FPU */
#define ARC_REG_DCCM_BCR 0x74 /* DCCM Present + SZ */
#define ARC_REG_TIMERS_BCR 0x75
#define ARC_REG_AP_BCR 0x76
#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
#define ARC_REG_BPU_BCR 0xc0
#define ARC_REG_ISA_CFG_BCR 0xc1
#define ARC_REG_RTT_BCR 0xF2
#define ARC_REG_IRQ_BCR 0xF3
#define ARC_REG_SMART_BCR 0xFF
/* 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)
*/
#ifdef CONFIG_ISA_ARCOMPACT
#define ECR_V_MEM_ERR 0x01
#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
#else
#define ECR_V_MEM_ERR 0x01
#define ECR_V_INSN_ERR 0x02
#define ECR_V_MACH_CHK 0x03
#define ECR_V_ITLB_MISS 0x04
#define ECR_V_DTLB_MISS 0x05
#define ECR_V_PROTV 0x06
#define ECR_V_TRAP 0x09
#endif
/* DTLB Miss and Protection Violation Cause Codes */
#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
/* 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_AUX(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)
/*
***************************************************************
* 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
};
struct bcr_isa {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int div_rem:4, pad2:4, ldd:1, unalign:1, atomic:1, be:1,
pad1:11, atomic1:1, ver:8;
#else
unsigned int ver:8, atomic1:1, pad1:11, be:1, atomic:1, unalign:1,
ldd:1, pad2:4, div_rem:4;
#endif
};
struct bcr_mpy {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad:8, x1616:8, dsp:4, cycles:2, type:2, ver:8;
#else
unsigned int ver:8, type:2, cycles:2, dsp:4, x1616:8, pad:8;
#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
};
/* ARCompact: Both SP and DP FPU BCRs have same format */
struct bcr_fp_arcompact {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int fast:1, ver:8;
#else
unsigned int ver:8, fast:1;
#endif
};
struct bcr_fp_arcv2 {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad2:15, dp:1, pad1:7, sp:1, ver:8;
#else
unsigned int ver:8, sp:1, pad1:7, dp:1, pad2:15;
#endif
};
struct bcr_timer {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad2:15, rtsc:1, pad1:5, rtc:1, t1:1, t0:1, ver:8;
#else
unsigned int ver:8, t0:1, t1:1, rtc:1, pad1:5, rtsc:1, pad2:15;
#endif
};
struct bcr_bpu_arcompact {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad2:19, fam:1, pad:2, ent:2, ver:8;
#else
unsigned int ver:8, ent:2, pad:2, fam:1, pad2:19;
#endif
};
struct bcr_bpu_arcv2 {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad:6, fbe:2, tqe:2, ts:4, ft:1, rse:2, pte:3, bce:3, ver:8;
#else
unsigned int ver:8, bce:3, pte:3, rse:2, ft:1, ts:4, tqe:2, fbe:2, pad:6;
#endif
};
struct bcr_generic {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad:24, ver:8;
#else
unsigned int ver:8, pad:24;
#endif
};
/*
*******************************************************************
* Generic structures to hold build configuration used at runtime
*/
struct cpuinfo_arc_mmu {
unsigned int ver:4, pg_sz_k:8, s_pg_sz_m:8, u_dtlb:6, u_itlb:6;
unsigned int num_tlb:16, sets:12, ways:4;
};
struct cpuinfo_arc_cache {
unsigned int sz_k:8, line_len:8, assoc:4, ver:4, alias:1, vipt:1, pad:6;
};
struct cpuinfo_arc_bpu {
unsigned int ver, full, num_cache, num_pred;
};
struct cpuinfo_arc_ccm {
unsigned int base_addr, sz;
};
struct cpuinfo_arc {
struct cpuinfo_arc_cache icache, dcache;
struct cpuinfo_arc_mmu mmu;
struct cpuinfo_arc_bpu bpu;
struct bcr_identity core;
struct bcr_isa isa;
struct bcr_timer timers;
unsigned int vec_base;
struct cpuinfo_arc_ccm iccm, dccm;
struct {
unsigned int swap:1, norm:1, minmax:1, barrel:1, crc:1, pad1:3,
fpu_sp:1, fpu_dp:1, pad2:6,
debug:1, ap:1, smart:1, rtt:1, pad3:4,
pad4:8;
} extn;
struct bcr_mpy extn_mpy;
struct bcr_extn_xymem extn_xymem;
};
extern struct cpuinfo_arc cpuinfo_arc700[];
static inline int is_isa_arcv2(void)
{
return IS_ENABLED(CONFIG_ISA_ARCV2);
}
static inline int is_isa_arcompact(void)
{
return IS_ENABLED(CONFIG_ISA_ARCOMPACT);
}
#if defined(CONFIG_ISA_ARCOMPACT) && !defined(_CPU_DEFAULT_A7)
#error "Toolchain not configured for ARCompact builds"
#elif defined(CONFIG_ISA_ARCV2) && !defined(_CPU_DEFAULT_HS)
#error "Toolchain not configured for ARCv2 builds"
#endif
#endif /* __ASEMBLY__ */
#endif /* _ASM_ARC_ARCREGS_H */
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