| /* SPDX-License-Identifier: GPL-2.0-only */ |
| #ifndef _ASMRISCV_CSR_H_ |
| #define _ASMRISCV_CSR_H_ |
| #include <linux/const.h> |
| |
| #define CSR_SSTATUS 0x100 |
| #define CSR_STVEC 0x105 |
| #define CSR_SSCRATCH 0x140 |
| #define CSR_SEPC 0x141 |
| #define CSR_SCAUSE 0x142 |
| #define CSR_STVAL 0x143 |
| #define CSR_SATP 0x180 |
| |
| #define SR_SIE _AC(0x00000002, UL) |
| |
| /* Exception cause high bit - is an interrupt if set */ |
| #define CAUSE_IRQ_FLAG (_AC(1, UL) << (__riscv_xlen - 1)) |
| |
| /* Exception causes */ |
| #define EXC_INST_MISALIGNED 0 |
| #define EXC_INST_ACCESS 1 |
| #define EXC_INST_ILLEGAL 2 |
| #define EXC_BREAKPOINT 3 |
| #define EXC_LOAD_MISALIGNED 4 |
| #define EXC_LOAD_ACCESS 5 |
| #define EXC_STORE_MISALIGNED 6 |
| #define EXC_STORE_ACCESS 7 |
| #define EXC_SYSCALL 8 |
| #define EXC_HYPERVISOR_SYSCALL 9 |
| #define EXC_SUPERVISOR_SYSCALL 10 |
| #define EXC_INST_PAGE_FAULT 12 |
| #define EXC_LOAD_PAGE_FAULT 13 |
| #define EXC_STORE_PAGE_FAULT 15 |
| #define EXC_INST_GUEST_PAGE_FAULT 20 |
| #define EXC_LOAD_GUEST_PAGE_FAULT 21 |
| #define EXC_VIRTUAL_INST_FAULT 22 |
| #define EXC_STORE_GUEST_PAGE_FAULT 23 |
| |
| /* Interrupt causes */ |
| #define IRQ_S_SOFT 1 |
| #define IRQ_VS_SOFT 2 |
| #define IRQ_S_TIMER 5 |
| #define IRQ_VS_TIMER 6 |
| #define IRQ_S_EXT 9 |
| #define IRQ_VS_EXT 10 |
| #define IRQ_S_GEXT 12 |
| #define IRQ_PMU_OVF 13 |
| |
| #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 /* _ASMRISCV_CSR_H_ */ |