From 5f23952b33e1837f18080a33077a1400e72ae100 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 6 Sep 2017 18:05:43 -0400 Subject: [PATCH 3085/4131] drm/amdgpu: add HDP asic callbacks for SI MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Needed to flush and invalidate the HDP block using the CPU. Reviewed-by: Christian König Signed-off-by: Alex Deucher Signed-off-by: Samuel Li --- drivers/gpu/drm/amd/amdgpu/si.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/si.c b/drivers/gpu/drm/amd/amdgpu/si.c index 3598151..44ead2d 100644 --- a/drivers/gpu/drm/amd/amdgpu/si.c +++ b/drivers/gpu/drm/amd/amdgpu/si.c @@ -1296,6 +1296,18 @@ static void si_set_pcie_lanes(struct amdgpu_device *adev, int lanes) WREG32_PCIE_PORT(PCIE_LC_LINK_WIDTH_CNTL, link_width_cntl); } +static void si_flush_hdp(struct amdgpu_device *adev) +{ + WREG32(mmHDP_MEM_COHERENCY_FLUSH_CNTL, 1); + RREG32(mmHDP_MEM_COHERENCY_FLUSH_CNTL); +} + +static void si_invalidate_hdp(struct amdgpu_device *adev) +{ + WREG32(mmHDP_DEBUG0, 1); + RREG32(mmHDP_DEBUG0); +} + static const struct amdgpu_asic_funcs si_asic_funcs = { .read_disabled_bios = &si_read_disabled_bios, @@ -1309,6 +1321,8 @@ static const struct amdgpu_asic_funcs si_asic_funcs = .get_pcie_lanes = &si_get_pcie_lanes, .set_pcie_lanes = &si_set_pcie_lanes, .get_config_memsize = &si_get_config_memsize, + .flush_hdp = &si_flush_hdp, + .invalidate_hdp = &si_invalidate_hdp, }; static uint32_t si_get_rev_id(struct amdgpu_device *adev) -- 2.7.4