drm/amdgpu: add HDP asic callbacks for SOC15 (v2)

Needed to flush and invalidate the HDP block using the CPU.

v2: use preferred register on soc15.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Samuel Li <Samuel.Li@amd.com> (v1)

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c
index a04a033f57de..ad39ffd012bc 100644
--- a/drivers/gpu/drm/amd/amdgpu/soc15.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
@@ -583,6 +583,16 @@ static uint32_t soc15_get_rev_id(struct amdgpu_device *adev)
         return adev->nbio_funcs->get_rev_id(adev);
 }
 
+static void soc15_flush_hdp(struct amdgpu_device *adev)
+{
+        adev->nbio_funcs->hdp_flush(adev);
+}
+
+static void soc15_invalidate_hdp(struct amdgpu_device *adev)
+{
+        WREG32_SOC15_NO_KIQ(NBIO, 0, mmHDP_READ_CACHE_INVALIDATE, 1);
+}
+
 static const struct amdgpu_asic_funcs soc15_asic_funcs =
 {
         .read_disabled_bios = &soc15_read_disabled_bios,
@@ -594,6 +604,8 @@ static const struct amdgpu_asic_funcs soc15_asic_funcs =
         .set_uvd_clocks = &soc15_set_uvd_clocks,
         .set_vce_clocks = &soc15_set_vce_clocks,
         .get_config_memsize = &soc15_get_config_memsize,
+        .flush_hdp = &soc15_flush_hdp,
+        .invalidate_hdp = &soc15_invalidate_hdp,
 };
 
 static int soc15_common_early_init(void *handle)