diff options
| author | Jay Cornwall <Jay.Cornwall@amd.com> | 2018-05-01 17:56:03 -0400 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@gmail.com> | 2018-05-01 17:56:03 -0400 |
| commit | 2774c63ef3dbb6052dd1d224b38a9decf89be61c (patch) | |
| tree | d8f8c48e6aeb4c71dc921e082ffc198b9cc43140 /drivers/gpu | |
| parent | 87e6d4e0777daf774ed9aa59ed25b6ebaaad7052 (diff) | |
drm/amdkfd: Use volatile MTYPE in default/alternate apertures
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.Cornwall@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/cik_regs.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/cik_regs.h b/drivers/gpu/drm/amd/amdkfd/cik_regs.h index 48769d12dd7b..37ce6dd65391 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) |