From: Alex Deucher <alexander.deucher@amd.com>
Date: Wed, 6 Sep 2017 18:06:45 -0400
Subject: drm/amdgpu: add HDP asic callbacks for SOC15 (v2)
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Git-commit: 73c732405fddfe16b122c77de83397289463b557
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.

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)
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/amdgpu/soc15.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)

--- 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
 	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 so
 	.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)