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>
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@ -33,7 +33,8 @@
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#define APE1_MTYPE(x) ((x) << 7)
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/* valid for both DEFAULT_MTYPE and APE1_MTYPE */
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#define MTYPE_CACHED 0
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#define MTYPE_CACHED_NV 0
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#define MTYPE_CACHED 1
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#define MTYPE_NONCACHED 3
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#define DEFAULT_CP_HQD_PERSISTENT_STATE (0x33U << 8)
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