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/* SPDX-License-Identifier: GPL-2.0 */
/*
* cpu.h: Values of the PRID register used to match up
* various LoongArch CPU types.
*
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
*/
#ifndef _ASM_CPU_H
#define _ASM_CPU_H
/*
* As described in LoongArch specs from Loongson Technology, the PRID register
* (CPUCFG.00) has the following layout:
*
* +---------------+----------------+------------+--------------------+
* | Reserved | Company ID | Series ID | Product ID |
* +---------------+----------------+------------+--------------------+
* 31 24 23 16 15 12 11 0
*/
/*
* Assigned Company values for bits 23:16 of the PRID register.
*/
#define PRID_COMP_MASK 0xff0000
#define PRID_COMP_LOONGSON 0x140000
/*
* Assigned Series ID values for bits 15:12 of the PRID register. In order
* to detect a certain CPU type exactly eventually additional registers may
* need to be examined.
*/
#define PRID_SERIES_MASK 0xf000
#define PRID_SERIES_LA132 0x8000 /* Loongson 32bit */
#define PRID_SERIES_LA264 0xa000 /* Loongson 64bit, 2-issue */
#define PRID_SERIES_LA364 0xb000 /* Loongson 64bit，3-issue */
#define PRID_SERIES_LA464 0xc000 /* Loongson 64bit, 4-issue */
#define PRID_SERIES_LA664 0xd000 /* Loongson 64bit, 6-issue */
/*
* Particular Product ID values for bits 11:0 of the PRID register.
*/
#define PRID_PRODUCT_MASK 0x0fff
#if !defined(__ASSEMBLY__)
enum cpu_type_enum {
CPU_UNKNOWN,
CPU_LOONGSON32,
CPU_LOONGSON64,
CPU_LAST
};
#endif /* !__ASSEMBLY */
/*
* ISA Level encodings
*
*/
#define LOONGARCH_CPU_ISA_LA32R 0x00000001
#define LOONGARCH_CPU_ISA_LA32S 0x00000002
#define LOONGARCH_CPU_ISA_LA64 0x00000004
#define LOONGARCH_CPU_ISA_32BIT (LOONGARCH_CPU_ISA_LA32R | LOONGARCH_CPU_ISA_LA32S)
#define LOONGARCH_CPU_ISA_64BIT LOONGARCH_CPU_ISA_LA64
/*
* CPU Option encodings
*/
#define CPU_FEATURE_CPUCFG 0 /* CPU has CPUCFG */
#define CPU_FEATURE_LAM 1 /* CPU has Atomic instructions */
#define CPU_FEATURE_UAL 2 /* CPU supports unaligned access */
#define CPU_FEATURE_FPU 3 /* CPU has FPU */
#define CPU_FEATURE_LSX 4 /* CPU has LSX (128-bit SIMD) */
#define CPU_FEATURE_LASX 5 /* CPU has LASX (256-bit SIMD) */
#define CPU_FEATURE_COMPLEX 6 /* CPU has Complex instructions */
#define CPU_FEATURE_CRYPTO 7 /* CPU has Crypto instructions */
#define CPU_FEATURE_LVZ 8 /* CPU has Virtualization extension */
#define CPU_FEATURE_LBT_X86 9 /* CPU has X86 Binary Translation */
#define CPU_FEATURE_LBT_ARM 10 /* CPU has ARM Binary Translation */
#define CPU_FEATURE_LBT_MIPS 11 /* CPU has MIPS Binary Translation */
#define CPU_FEATURE_TLB 12 /* CPU has TLB */
#define CPU_FEATURE_CSR 13 /* CPU has CSR */
#define CPU_FEATURE_WATCH 14 /* CPU has watchpoint registers */
#define CPU_FEATURE_VINT 15 /* CPU has vectored interrupts */
#define CPU_FEATURE_CSRIPI 16 /* CPU has CSR-IPI */
#define CPU_FEATURE_EXTIOI 17 /* CPU has EXT-IOI */
#define CPU_FEATURE_PREFETCH 18 /* CPU has prefetch instructions */
#define CPU_FEATURE_PMP 19 /* CPU has perfermance counter */
#define CPU_FEATURE_SCALEFREQ 20 /* CPU supports cpufreq scaling */
#define CPU_FEATURE_FLATMODE 21 /* CPU has flat mode */
#define CPU_FEATURE_EIODECODE 22 /* CPU has EXTIOI interrupt pin decode mode */
#define CPU_FEATURE_GUESTID 23 /* CPU has GuestID feature */
#define CPU_FEATURE_HYPERVISOR 24 /* CPU has hypervisor (running in VM) */
#define LOONGARCH_CPU_CPUCFG BIT_ULL(CPU_FEATURE_CPUCFG)
#define LOONGARCH_CPU_LAM BIT_ULL(CPU_FEATURE_LAM)
#define LOONGARCH_CPU_UAL BIT_ULL(CPU_FEATURE_UAL)
#define LOONGARCH_CPU_FPU BIT_ULL(CPU_FEATURE_FPU)
#define LOONGARCH_CPU_LSX BIT_ULL(CPU_FEATURE_LSX)
#define LOONGARCH_CPU_LASX BIT_ULL(CPU_FEATURE_LASX)
#define LOONGARCH_CPU_COMPLEX BIT_ULL(CPU_FEATURE_COMPLEX)
#define LOONGARCH_CPU_CRYPTO BIT_ULL(CPU_FEATURE_CRYPTO)
#define LOONGARCH_CPU_LVZ BIT_ULL(CPU_FEATURE_LVZ)
#define LOONGARCH_CPU_LBT_X86 BIT_ULL(CPU_FEATURE_LBT_X86)
#define LOONGARCH_CPU_LBT_ARM BIT_ULL(CPU_FEATURE_LBT_ARM)
#define LOONGARCH_CPU_LBT_MIPS BIT_ULL(CPU_FEATURE_LBT_MIPS)
#define LOONGARCH_CPU_TLB BIT_ULL(CPU_FEATURE_TLB)
#define LOONGARCH_CPU_CSR BIT_ULL(CPU_FEATURE_CSR)
#define LOONGARCH_CPU_WATCH BIT_ULL(CPU_FEATURE_WATCH)
#define LOONGARCH_CPU_VINT BIT_ULL(CPU_FEATURE_VINT)
#define LOONGARCH_CPU_CSRIPI BIT_ULL(CPU_FEATURE_CSRIPI)
#define LOONGARCH_CPU_EXTIOI BIT_ULL(CPU_FEATURE_EXTIOI)
#define LOONGARCH_CPU_PREFETCH BIT_ULL(CPU_FEATURE_PREFETCH)
#define LOONGARCH_CPU_PMP BIT_ULL(CPU_FEATURE_PMP)
#define LOONGARCH_CPU_SCALEFREQ BIT_ULL(CPU_FEATURE_SCALEFREQ)
#define LOONGARCH_CPU_FLATMODE BIT_ULL(CPU_FEATURE_FLATMODE)
#define LOONGARCH_CPU_EIODECODE BIT_ULL(CPU_FEATURE_EIODECODE)
#define LOONGARCH_CPU_GUESTID BIT_ULL(CPU_FEATURE_GUESTID)
#define LOONGARCH_CPU_HYPERVISOR BIT_ULL(CPU_FEATURE_HYPERVISOR)
#endif /* _ASM_CPU_H */
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