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| author |  Jisheng Zhang <jszhang@kernel.org>
| 2023-11-14 22:33:38 +0800 |
|---|---|---|
| committer |  Palmer Dabbelt <palmer@rivosinc.com>
| 2024-01-10 09:54:27 -0800 |
| commit | 3690492612ecd2b3fd69f39f3a56f6313ea8ef8b (patch) | |
| tree | 17331dfaef60886b5bde8350696b86f3d361fcfd /arch/riscv/errata | |
| parent | riscv: errata: thead: use riscv_nonstd_cache_ops for CMO (diff) | |
| download | linux-3690492612ecd2b3fd69f39f3a56f6313ea8ef8b.tar.gz linux-3690492612ecd2b3fd69f39f3a56f6313ea8ef8b.tar.bz2 linux-3690492612ecd2b3fd69f39f3a56f6313ea8ef8b.zip | |
riscv: errata: thead: use pa based instructions for CMO
T-HEAD CPUs such as C906/C910/C920 support phy address based CMO, use
them so that we don't need to convert to virt address.
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Reviewed-by: Guo Ren <guoren@kernel.org>
Link: https://lore.kernel.org/r/20231114143338.2406-3-jszhang@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/errata')
| -rw-r--r-- | arch/riscv/errata/thead/errata.c | 18 |
1 files changed, 6 insertions, 12 deletions
diff --git a/arch/riscv/errata/thead/errata.c b/arch/riscv/errata/thead/errata.c index c07d957b1468..b1c410bbc1ae 100644 --- a/arch/riscv/errata/thead/errata.c +++ b/arch/riscv/errata/thead/errata.c @@ -58,9 +58,9 @@ static bool errata_probe_pbmt(unsigned int stage, * | 31 - 25 | 24 - 20 | 19 - 15 | 14 - 12 | 11 - 7 | 6 - 0 | * 0000000 11001 00000 000 00000 0001011 */ -#define THEAD_INVAL_A0 ".long 0x0265000b" -#define THEAD_CLEAN_A0 ".long 0x0255000b" -#define THEAD_FLUSH_A0 ".long 0x0275000b" +#define THEAD_INVAL_A0 ".long 0x02a5000b" +#define THEAD_CLEAN_A0 ".long 0x0295000b" +#define THEAD_FLUSH_A0 ".long 0x02b5000b" #define THEAD_SYNC_S ".long 0x0190000b" #define THEAD_CMO_OP(_op, _start, _size, _cachesize) \ @@ -79,23 +79,17 @@ asm volatile("mv a0, %1\n\t" \ static void thead_errata_cache_inv(phys_addr_t paddr, size_t size) { - void *vaddr = phys_to_virt(paddr); - - THEAD_CMO_OP(INVAL, vaddr, size, riscv_cbom_block_size); + THEAD_CMO_OP(INVAL, paddr, size, riscv_cbom_block_size); } static void thead_errata_cache_wback(phys_addr_t paddr, size_t size) { - void *vaddr = phys_to_virt(paddr); - - THEAD_CMO_OP(CLEAN, vaddr, size, riscv_cbom_block_size); + THEAD_CMO_OP(CLEAN, paddr, size, riscv_cbom_block_size); } static void thead_errata_cache_wback_inv(phys_addr_t paddr, size_t size) { - void *vaddr = phys_to_virt(paddr); - - THEAD_CMO_OP(FLUSH, vaddr, size, riscv_cbom_block_size); + THEAD_CMO_OP(FLUSH, paddr, size, riscv_cbom_block_size); } static const struct riscv_nonstd_cache_ops thead_errata_cmo_ops = { |