1bd744d46SAndrew Jones /* SPDX-License-Identifier: GPL-2.0-only */ 2bd744d46SAndrew Jones #ifndef _ASMRISCV_CSR_H_ 3bd744d46SAndrew Jones #define _ASMRISCV_CSR_H_ 422f287f4SAndrew Jones #include <linux/const.h> 5bd744d46SAndrew Jones 6386561f8SAndrew Jones #define CSR_SSTATUS 0x100 714fa12b1SJames Raphael Tiovalen #define CSR_SIE 0x104 8386561f8SAndrew Jones #define CSR_STVEC 0x105 9bd744d46SAndrew Jones #define CSR_SSCRATCH 0x140 10386561f8SAndrew Jones #define CSR_SEPC 0x141 11386561f8SAndrew Jones #define CSR_SCAUSE 0x142 12386561f8SAndrew Jones #define CSR_STVAL 0x143 1314fa12b1SJames Raphael Tiovalen #define CSR_SIP 0x144 1414fa12b1SJames Raphael Tiovalen #define CSR_STIMECMP 0x14d 1514fa12b1SJames Raphael Tiovalen #define CSR_STIMECMPH 0x15d 16ad435a71SAndrew Jones #define CSR_SATP 0x180 1793bcbb09SJames Raphael Tiovalen #define CSR_TIME 0xc01 18386561f8SAndrew Jones 19a3c0b550SAndrew Jones #define SR_SIE _AC(0x00000002, UL) 20a3c0b550SAndrew Jones 21386561f8SAndrew Jones /* Exception cause high bit - is an interrupt if set */ 22386561f8SAndrew Jones #define CAUSE_IRQ_FLAG (_AC(1, UL) << (__riscv_xlen - 1)) 23386561f8SAndrew Jones 24386561f8SAndrew Jones /* Exception causes */ 25386561f8SAndrew Jones #define EXC_INST_MISALIGNED 0 26386561f8SAndrew Jones #define EXC_INST_ACCESS 1 27386561f8SAndrew Jones #define EXC_INST_ILLEGAL 2 28386561f8SAndrew Jones #define EXC_BREAKPOINT 3 29386561f8SAndrew Jones #define EXC_LOAD_MISALIGNED 4 30386561f8SAndrew Jones #define EXC_LOAD_ACCESS 5 31386561f8SAndrew Jones #define EXC_STORE_MISALIGNED 6 32386561f8SAndrew Jones #define EXC_STORE_ACCESS 7 33386561f8SAndrew Jones #define EXC_SYSCALL 8 34386561f8SAndrew Jones #define EXC_HYPERVISOR_SYSCALL 9 35386561f8SAndrew Jones #define EXC_SUPERVISOR_SYSCALL 10 36386561f8SAndrew Jones #define EXC_INST_PAGE_FAULT 12 37386561f8SAndrew Jones #define EXC_LOAD_PAGE_FAULT 13 38386561f8SAndrew Jones #define EXC_STORE_PAGE_FAULT 15 39386561f8SAndrew Jones #define EXC_INST_GUEST_PAGE_FAULT 20 40386561f8SAndrew Jones #define EXC_LOAD_GUEST_PAGE_FAULT 21 41386561f8SAndrew Jones #define EXC_VIRTUAL_INST_FAULT 22 42386561f8SAndrew Jones #define EXC_STORE_GUEST_PAGE_FAULT 23 43bd744d46SAndrew Jones 44c20c0aa7SJames Raphael Tiovalen /* Interrupt causes */ 45c20c0aa7SJames Raphael Tiovalen #define IRQ_S_SOFT 1 46c20c0aa7SJames Raphael Tiovalen #define IRQ_VS_SOFT 2 47c20c0aa7SJames Raphael Tiovalen #define IRQ_S_TIMER 5 48c20c0aa7SJames Raphael Tiovalen #define IRQ_VS_TIMER 6 49c20c0aa7SJames Raphael Tiovalen #define IRQ_S_EXT 9 50c20c0aa7SJames Raphael Tiovalen #define IRQ_VS_EXT 10 51c20c0aa7SJames Raphael Tiovalen #define IRQ_S_GEXT 12 52c20c0aa7SJames Raphael Tiovalen #define IRQ_PMU_OVF 13 53c20c0aa7SJames Raphael Tiovalen 54*70df1827SAndrew Jones #define IE_SSIE (_AC(1, UL) << IRQ_S_SOFT) 55*70df1827SAndrew Jones #define IE_TIE (_AC(1, UL) << IRQ_S_TIMER) 5614fa12b1SJames Raphael Tiovalen 5714fa12b1SJames Raphael Tiovalen #define IP_TIP IE_TIE 5814fa12b1SJames Raphael Tiovalen 5922f287f4SAndrew Jones #ifndef __ASSEMBLY__ 6022f287f4SAndrew Jones 6122f287f4SAndrew Jones #define csr_swap(csr, val) \ 6222f287f4SAndrew Jones ({ \ 6322f287f4SAndrew Jones unsigned long __v = (unsigned long)(val); \ 6422f287f4SAndrew Jones __asm__ __volatile__ ("csrrw %0, " __ASM_STR(csr) ", %1"\ 6522f287f4SAndrew Jones : "=r" (__v) : "rK" (__v) \ 6622f287f4SAndrew Jones : "memory"); \ 6722f287f4SAndrew Jones __v; \ 6822f287f4SAndrew Jones }) 6922f287f4SAndrew Jones 7022f287f4SAndrew Jones #define csr_read(csr) \ 7122f287f4SAndrew Jones ({ \ 7222f287f4SAndrew Jones register unsigned long __v; \ 7322f287f4SAndrew Jones __asm__ __volatile__ ("csrr %0, " __ASM_STR(csr) \ 7422f287f4SAndrew Jones : "=r" (__v) : \ 7522f287f4SAndrew Jones : "memory"); \ 7622f287f4SAndrew Jones __v; \ 7722f287f4SAndrew Jones }) 7822f287f4SAndrew Jones 7922f287f4SAndrew Jones #define csr_write(csr, val) \ 8022f287f4SAndrew Jones ({ \ 8122f287f4SAndrew Jones unsigned long __v = (unsigned long)(val); \ 8222f287f4SAndrew Jones __asm__ __volatile__ ("csrw " __ASM_STR(csr) ", %0" \ 8322f287f4SAndrew Jones : : "rK" (__v) \ 8422f287f4SAndrew Jones : "memory"); \ 8522f287f4SAndrew Jones }) 8622f287f4SAndrew Jones 8722f287f4SAndrew Jones #define csr_read_set(csr, val) \ 8822f287f4SAndrew Jones ({ \ 8922f287f4SAndrew Jones unsigned long __v = (unsigned long)(val); \ 9022f287f4SAndrew Jones __asm__ __volatile__ ("csrrs %0, " __ASM_STR(csr) ", %1"\ 9122f287f4SAndrew Jones : "=r" (__v) : "rK" (__v) \ 9222f287f4SAndrew Jones : "memory"); \ 9322f287f4SAndrew Jones __v; \ 9422f287f4SAndrew Jones }) 9522f287f4SAndrew Jones 9622f287f4SAndrew Jones #define csr_set(csr, val) \ 9722f287f4SAndrew Jones ({ \ 9822f287f4SAndrew Jones unsigned long __v = (unsigned long)(val); \ 9922f287f4SAndrew Jones __asm__ __volatile__ ("csrs " __ASM_STR(csr) ", %0" \ 10022f287f4SAndrew Jones : : "rK" (__v) \ 10122f287f4SAndrew Jones : "memory"); \ 10222f287f4SAndrew Jones }) 10322f287f4SAndrew Jones 10422f287f4SAndrew Jones #define csr_read_clear(csr, val) \ 10522f287f4SAndrew Jones ({ \ 10622f287f4SAndrew Jones unsigned long __v = (unsigned long)(val); \ 10722f287f4SAndrew Jones __asm__ __volatile__ ("csrrc %0, " __ASM_STR(csr) ", %1"\ 10822f287f4SAndrew Jones : "=r" (__v) : "rK" (__v) \ 10922f287f4SAndrew Jones : "memory"); \ 11022f287f4SAndrew Jones __v; \ 11122f287f4SAndrew Jones }) 11222f287f4SAndrew Jones 11322f287f4SAndrew Jones #define csr_clear(csr, val) \ 11422f287f4SAndrew Jones ({ \ 11522f287f4SAndrew Jones unsigned long __v = (unsigned long)(val); \ 11622f287f4SAndrew Jones __asm__ __volatile__ ("csrc " __ASM_STR(csr) ", %0" \ 11722f287f4SAndrew Jones : : "rK" (__v) \ 11822f287f4SAndrew Jones : "memory"); \ 11922f287f4SAndrew Jones }) 12022f287f4SAndrew Jones 12122f287f4SAndrew Jones #endif /* !__ASSEMBLY__ */ 122bd744d46SAndrew Jones #endif /* _ASMRISCV_CSR_H_ */ 123