From: Alex Deucher Date: Wed, 6 Sep 2017 18:05:43 -0400 Subject: drm/amdgpu: add HDP asic callbacks for SI MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Git-commit: 2d5e0807edf3a3ff44e52ab8ab3cfd675f6c8dad Patch-mainline: v4.17-rc1 References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166 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 Acked-by: Petr Tesarik --- drivers/gpu/drm/amd/amdgpu/si.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) --- a/drivers/gpu/drm/amd/amdgpu/si.c +++ b/drivers/gpu/drm/amd/amdgpu/si.c @@ -1231,6 +1231,18 @@ static void si_detect_hw_virtualization( adev->virt.caps |= AMDGPU_PASSTHROUGH_MODE; } +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, @@ -1242,6 +1254,8 @@ static const struct amdgpu_asic_funcs si .set_uvd_clocks = &si_set_uvd_clocks, .set_vce_clocks = NULL, .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)