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Merge patch "riscv: errata: improve T-Head CMO"

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This fixes an encoding issue with T-Head's dcache.cva and fixes the
comment about the T-Head encodings.  The first of these was a fix and
got picked up earlier, I'm merging the second on top of it as they touch
the same comment.

* b4-shazam-merge:
  riscv: errata: prefix T-Head mnemonics with th.
  riscv: errata: fix T-Head dcache.cva encoding

Link: https://lore.kernel.org/r/20230827090813.1353-1-jszhang@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Palmer Dabbelt 2023-10-27 06:22:52 -07:00
parent b8c2f6617f 27fb27197c
commit 4630d6daab
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GPG key ID: 2E1319F35FBB1889
1 changed files with 9 additions and 9 deletions
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18
arch/riscv/include/asm/errata_list.h
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@ -95,30 +95,30 @@ asm volatile(ALTERNATIVE( \
#endif
/*
* dcache.ipa rs1 (invalidate, physical address)
* th.dcache.ipa rs1 (invalidate, physical address)
* | 31 - 25 | 24 - 20 | 19 - 15 | 14 - 12 | 11 - 7 | 6 - 0 |
* 0000001 01010 rs1 000 00000 0001011
* dache.iva rs1 (invalida, virtual address)
* th.dache.iva rs1 (invalida, virtual address)
* 0000001 00110 rs1 000 00000 0001011
*
* dcache.cpa rs1 (clean, physical address)
* th.dcache.cpa rs1 (clean, physical address)
* | 31 - 25 | 24 - 20 | 19 - 15 | 14 - 12 | 11 - 7 | 6 - 0 |
* 0000001 01001 rs1 000 00000 0001011
* dcache.cva rs1 (clean, virtual address)
* 0000001 00100 rs1 000 00000 0001011
* th.dcache.cva rs1 (clean, virtual address)
* 0000001 00101 rs1 000 00000 0001011
*
* dcache.cipa rs1 (clean then invalidate, physical address)
* th.dcache.cipa rs1 (clean then invalidate, physical address)
* | 31 - 25 | 24 - 20 | 19 - 15 | 14 - 12 | 11 - 7 | 6 - 0 |
* 0000001 01011 rs1 000 00000 0001011
* dcache.civa rs1 (... virtual address)
* th.dcache.civa rs1 (... virtual address)
* 0000001 00111 rs1 000 00000 0001011
*
* sync.s (make sure all cache operations finished)
* th.sync.s (make sure all cache operations finished)
* | 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 0x0245000b"
#define THEAD_clean_A0 ".long 0x0255000b"
#define THEAD_flush_A0 ".long 0x0275000b"
#define THEAD_SYNC_S ".long 0x0190000b"