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Commit 0b65f83f authored by Dave Airlie's avatar Dave Airlie Committed by Dave Airlie
Browse files

drm/radeon/cayman: setup hdp to invalidate and flush when asked 



On cayman we need to set the bit to cause HDP flushes to invalidate the
HDP cache also.

Reviewed-by: default avatarAlex Deucher <alexdeucher@gmail.com>
cc: stable@kernel.org
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent f25a5c63

drivers/gpu/drm/radeon/ni.c

+4 −0
Original line number Diff line number Diff line
@@ -931,6 +931,10 @@ static void cayman_gpu_init(struct radeon_device *rdev) 
	WREG32(CB_PERF_CTR3_SEL_0, 0);

	WREG32(CB_PERF_CTR3_SEL_1, 0);



	tmp = RREG32(HDP_MISC_CNTL);

	tmp |= HDP_FLUSH_INVALIDATE_CACHE;

	WREG32(HDP_MISC_CNTL, tmp);



	hdp_host_path_cntl = RREG32(HDP_HOST_PATH_CNTL);

	WREG32(HDP_HOST_PATH_CNTL, hdp_host_path_cntl);

drivers/gpu/drm/radeon/nid.h

+2 −0
Original line number Diff line number Diff line
@@ -136,6 +136,8 @@ 
#define	HDP_NONSURFACE_INFO				0x2C08

#define	HDP_NONSURFACE_SIZE				0x2C0C

#define HDP_ADDR_CONFIG  				0x2F48

#define HDP_MISC_CNTL					0x2F4C

#define 	HDP_FLUSH_INVALIDATE_CACHE			(1 << 0)



#define	CC_SYS_RB_BACKEND_DISABLE			0x3F88

#define	GC_USER_SYS_RB_BACKEND_DISABLE			0x3F8C