From: Jay Cornwall <jay.cornw...@amd.com> MTYPE_NC_NV (0) marks scalar/vector L1 cache lines as non-volatile. Cache lines loaded through these apertures are intended to be invalidated before (and sometimes during) a dispatch. The non-volatile qualifier prevents these cache lines from being distinguished from those loaded through the private aperture.
Use MTYPE_NC (1) instead on both Gfx7 and Gfx8. This allows the compiler to use the BUFFER_WBINVL1_VOL instruction and is a precursor to automatic per-dispatch scalar/vector L1 volatile invalidation. Signed-off-by: Jay Cornwall <jay.cornw...@amd.com> Reviewed-by: Felix Kuehling <felix.kuehl...@amd.com> Signed-off-by: Felix Kuehling <felix.kuehl...@amd.com> --- drivers/gpu/drm/amd/amdkfd/cik_regs.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdkfd/cik_regs.h b/drivers/gpu/drm/amd/amdkfd/cik_regs.h index 48769d1..37ce6dd 100644 --- a/drivers/gpu/drm/amd/amdkfd/cik_regs.h +++ b/drivers/gpu/drm/amd/amdkfd/cik_regs.h @@ -33,7 +33,8 @@ #define APE1_MTYPE(x) ((x) << 7) /* valid for both DEFAULT_MTYPE and APE1_MTYPE */ -#define MTYPE_CACHED 0 +#define MTYPE_CACHED_NV 0 +#define MTYPE_CACHED 1 #define MTYPE_NONCACHED 3 #define DEFAULT_CP_HQD_PERSISTENT_STATE (0x33U << 8) -- 2.7.4 _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx
