RISC-V: Access CSRs using CSR numbers

We should prefer accessing CSRs using their CSR numbers because: 1. It compiles fine with older toolchains. 2. We can use latest CSR names in #define macro names of CSR numbers as-per RISC-V spec. 3. We can access newly added CSRs even if toolchain does not recognize newly addes CSRs by name. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2026-10-16 22:39:48 +00:00 · 2019-04-25 08:38:41 +00:00 · 2019-04-25 08:38:41 +00:00 · a3182c91ef
commit a3182c91ef
parent 6dcaf00487
9 changed files with 57 additions and 48 deletions
--- a/arch/riscv/include/asm/csr.h
+++ b/arch/riscv/include/asm/csr.h
--- a/arch/riscv/include/asm/irqflags.h
+++ b/arch/riscv/include/asm/irqflags.h
--- a/arch/riscv/include/asm/mmu_context.h
+++ b/arch/riscv/include/asm/mmu_context.h
--- a/arch/riscv/kernel/entry.S
+++ b/arch/riscv/kernel/entry.S
--- a/arch/riscv/kernel/head.S
+++ b/arch/riscv/kernel/head.S
--- a/arch/riscv/kernel/perf_event.c
+++ b/arch/riscv/kernel/perf_event.c
--- a/arch/riscv/kernel/smp.c
+++ b/arch/riscv/kernel/smp.c
--- a/arch/riscv/kernel/traps.c
+++ b/arch/riscv/kernel/traps.c
--- a/arch/riscv/mm/fault.c
+++ b/arch/riscv/mm/fault.c