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/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2015 Regents of the University of California */ #ifndef _ASM_RISCV_CSR_H #define _ASM_RISCV_CSR_H #include <asm/asm.h> #include <linux/const.h> /* Status register flags */ #define SR_SIE _AC(0x00000002, UL) /* Supervisor Interrupt Enable */ #define SR_SPIE _AC(0x00000020, UL) /* Previous Supervisor IE */ #define SR_SPP _AC(0x00000100, UL) /* Previously Supervisor */ #define SR_SUM _AC(0x00040000, UL) /* Supervisor User Memory Access */ #define SR_FS _AC(0x00006000, UL) /* Floating-point Status */ #define SR_FS_OFF _AC(0x00000000, UL) #define SR_FS_INITIAL _AC(0x00002000, UL) #define SR_FS_CLEAN _AC(0x00004000, UL) #define SR_FS_DIRTY _AC(0x00006000, UL) #define SR_XS _AC(0x00018000, UL) /* Extension Status */ #define SR_XS_OFF _AC(0x00000000, UL) #define SR_XS_INITIAL _AC(0x00008000, UL) #define SR_XS_CLEAN _AC(0x00010000, UL) #define SR_XS_DIRTY _AC(0x00018000, UL) #ifndef CONFIG_64BIT #define SR_SD _AC(0x80000000, UL) /* FS/XS dirty */ #else #define SR_SD _AC(0x8000000000000000, UL) /* FS/XS dirty */ #endif /* SATP flags */ #ifndef CONFIG_64BIT #define SATP_PPN _AC(0x003FFFFF, UL) #define SATP_MODE_32 _AC(0x80000000, UL) #define SATP_MODE SATP_MODE_32 #else #define SATP_PPN _AC(0x00000FFFFFFFFFFF, UL) #define SATP_MODE_39 _AC(0x8000000000000000, UL) #define SATP_MODE SATP_MODE_39 #endif /* SCAUSE */ #define SCAUSE_IRQ_FLAG (_AC(1, UL) << (__riscv_xlen - 1)) #define IRQ_U_SOFT 0 #define IRQ_S_SOFT 1 #define IRQ_M_SOFT 3 #define IRQ_U_TIMER 4 #define IRQ_S_TIMER 5 #define IRQ_M_TIMER 7 #define IRQ_U_EXT 8 #define IRQ_S_EXT 9 #define IRQ_M_EXT 11 #define EXC_INST_MISALIGNED 0 #define EXC_INST_ACCESS 1 #define EXC_BREAKPOINT 3 #define EXC_LOAD_ACCESS 5 #define EXC_STORE_ACCESS 7 #define EXC_SYSCALL 8 #define EXC_INST_PAGE_FAULT 12 #define EXC_LOAD_PAGE_FAULT 13 #define EXC_STORE_PAGE_FAULT 15 /* SIE (Interrupt Enable) and SIP (Interrupt Pending) flags */ #define SIE_SSIE (_AC(0x1, UL) << IRQ_S_SOFT) #define SIE_STIE (_AC(0x1, UL) << IRQ_S_TIMER) #define SIE_SEIE (_AC(0x1, UL) << IRQ_S_EXT) #define CSR_CYCLE 0xc00 #define CSR_TIME 0xc01 #define CSR_INSTRET 0xc02 #define CSR_SSTATUS 0x100 #define CSR_SIE 0x104 #define CSR_STVEC 0x105 #define CSR_SCOUNTEREN 0x106 #define CSR_SSCRATCH 0x140 #define CSR_SEPC 0x141 #define CSR_SCAUSE 0x142 #define CSR_STVAL 0x143 #define CSR_SIP 0x144 #define CSR_SATP 0x180 #define CSR_CYCLEH 0xc80 #define CSR_TIMEH 0xc81 #define CSR_INSTRETH 0xc82 #ifndef __ASSEMBLY__ #define csr_swap(csr, val) \ ({ \ unsigned long __v = (unsigned long)(val); \ __asm__ __volatile__ ("csrrw %0, " __ASM_STR(csr) ", %1"\ : "=r" (__v) : "rK" (__v) \ : "memory"); \ __v; \ }) #define csr_read(csr) \ ({ \ register unsigned long __v; \ __asm__ __volatile__ ("csrr %0, " __ASM_STR(csr) \ : "=r" (__v) : \ : "memory"); \ __v; \ }) #define csr_write(csr, val) \ ({ \ unsigned long __v = (unsigned long)(val); \ __asm__ __volatile__ ("csrw " __ASM_STR(csr) ", %0" \ : : "rK" (__v) \ : "memory"); \ }) #define csr_read_set(csr, val) \ ({ \ unsigned long __v = (unsigned long)(val); \ __asm__ __volatile__ ("csrrs %0, " __ASM_STR(csr) ", %1"\ : "=r" (__v) : "rK" (__v) \ : "memory"); \ __v; \ }) #define csr_set(csr, val) \ ({ \ unsigned long __v = (unsigned long)(val); \ __asm__ __volatile__ ("csrs " __ASM_STR(csr) ", %0" \ : : "rK" (__v) \ : "memory"); \ }) #define csr_read_clear(csr, val) \ ({ \ unsigned long __v = (unsigned long)(val); \ __asm__ __volatile__ ("csrrc %0, " __ASM_STR(csr) ", %1"\ : "=r" (__v) : "rK" (__v) \ : "memory"); \ __v; \ }) #define csr_clear(csr, val) \ ({ \ unsigned long __v = (unsigned long)(val); \ __asm__ __volatile__ ("csrc " __ASM_STR(csr) ", %0" \ : : "rK" (__v) \ : "memory"); \ }) #endif /* __ASSEMBLY__ */ #endif /* _ASM_RISCV_CSR_H */
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