author: Yifan Zhang <yifan1.zhang@amd.com> 2021-06-10 09:55:01 +0800
committer: Sasha Levin <sashal@kernel.org> 2021-08-26 08:34:59 -0400
commit: 0620a81e8040052e59efcf9dfa5420781beed06a
parent: c6751ce1a2a415a78e4f5b621628da03196b804c
Commit Summary:
Diffstat:
1 file changed, 20 insertions, 1 deletion
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 516467e962b7..3a476b86485e 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -1293,6 +1293,16 @@ static bool is_raven_kicker(struct amdgpu_device *adev)
return false;
}
+static bool check_if_enlarge_doorbell_range(struct amdgpu_device *adev)
+{
+ if ((adev->asic_type == CHIP_RENOIR) &&
+ (adev->gfx.me_fw_version >= 0x000000a5) &&
+ (adev->gfx.me_feature_version >= 52))
+ return true;
+ else
+ return false;
+}
+
static void gfx_v9_0_check_if_need_gfxoff(struct amdgpu_device *adev)
{
if (gfx_v9_0_should_disable_gfxoff(adev->pdev))
@@ -3673,7 +3683,16 @@ static int gfx_v9_0_kiq_init_register(struct amdgpu_ring *ring)
if (ring->use_doorbell) {
WREG32_SOC15(GC, 0, mmCP_MEC_DOORBELL_RANGE_LOWER,
(adev->doorbell_index.kiq * 2) << 2);
- WREG32_SOC15(GC, 0, mmCP_MEC_DOORBELL_RANGE_UPPER,
+ /* If GC has entered CGPG, ringing doorbell > first page
+ * doesn't wakeup GC. Enlarge CP_MEC_DOORBELL_RANGE_UPPER to
+ * workaround this issue. And this change has to align with firmware
+ * update.
+ */
+ if (check_if_enlarge_doorbell_range(adev))
+ WREG32_SOC15(GC, 0, mmCP_MEC_DOORBELL_RANGE_UPPER,
+ (adev->doorbell.size - 4));
+ else
+ WREG32_SOC15(GC, 0, mmCP_MEC_DOORBELL_RANGE_UPPER,
(adev->doorbell_index.userqueue_end * 2) << 2);
}