[AMD Official Use Only - General]
Suresh,
Please modify the commit message to a more meaningful one.
1. add a commit title
2. write about the changes than the effect of the change.
Something like Enabling FW workaround in using shared memory for VCN 4
3. Can you please check if this change is applicable for VCN_4.0.3 as well?
The same changes may need to go in vcn_v4_0_3.c as well.
Thanks & Regards,
Veera
-----Original Message-----
From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of sguttula
Sent: Friday, July 14, 2023 3:16 PM
To: Deucher, Alexander <Alexander.Deucher@xxxxxxx>; Koenig, Christian <Christian.Koenig@xxxxxxx>; Liu, Leo <Leo.Liu@xxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx; amd-gfx@xxxxxxxxxxxxxxxxxxxxx; Guttula, Suresh <Suresh.Guttula@xxxxxxx>
Subject: [PATCH 2/2] drm/amdgpu: Add FW shared flag for DRM KEY INJECT
This patch will fix the secure playback corruption due to HW bug on VCN4.
Signed-off-by: sguttula <Suresh.Guttula@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h | 9 +++++++++
drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c | 4 ++++
2 files changed, 13 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h
index 1f1d7dc94f90..a3eed90b6af0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h
@@ -161,6 +161,7 @@
} while (0)
#define AMDGPU_FW_SHARED_FLAG_0_UNIFIED_QUEUE (1 << 2)
+#define AMDGPU_FW_SHARED_FLAG_0_DRM_KEY_INJECT (1 << 4)
#define AMDGPU_VCN_FW_SHARED_FLAG_0_RB (1 << 6)
#define AMDGPU_VCN_MULTI_QUEUE_FLAG (1 << 8)
#define AMDGPU_VCN_SW_RING_FLAG (1 << 9)
@@ -180,6 +181,8 @@
#define AMDGPU_VCN_SMU_DPM_INTERFACE_DGPU (0) #define AMDGPU_VCN_SMU_DPM_INTERFACE_APU (1)
+#define AMDGPU_DRM_KEY_INJECT_WORKAROUND_VCNFW_ASD_HANDSHAKING 2
+
enum fw_queue_mode {
FW_QUEUE_RING_RESET = 1,
FW_QUEUE_DPG_HOLD_OFF = 2,
@@ -343,6 +346,11 @@ struct amdgpu_fw_shared_rb_setup {
uint32_t reserved[6];
};
+struct amdgpu_fw_shared_drm_key_wa {
+ uint8_t method;
+ uint8_t reserved[3];
+};
+
struct amdgpu_vcn4_fw_shared {
uint32_t present_flag_0;
uint8_t pad[12];
@@ -352,6 +360,7 @@ struct amdgpu_vcn4_fw_shared {
uint8_t pad2[20];
struct amdgpu_fw_shared_rb_setup rb_setup;
struct amdgpu_fw_shared_smu_interface_info smu_dpm_interface;
+ struct amdgpu_fw_shared_drm_key_wa drm_key_wa;
};
struct amdgpu_vcn_fwlog {
diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c b/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
index d199f87febd1..9f32c9f73941 100644
--- a/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
@@ -169,6 +169,10 @@ static int vcn_v4_0_sw_init(void *handle)
fw_shared->smu_dpm_interface.smu_interface_type = (adev->flags & AMD_IS_APU) ?
AMDGPU_VCN_SMU_DPM_INTERFACE_APU : AMDGPU_VCN_SMU_DPM_INTERFACE_DGPU;
+ fw_shared->present_flag_0 |= AMDGPU_FW_SHARED_FLAG_0_DRM_KEY_INJECT;
+ fw_shared->drm_key_wa.method =
+ AMDGPU_DRM_KEY_INJECT_WORKAROUND_VCNFW_ASD_HANDSHAKING;
+
if (amdgpu_sriov_vf(adev))
fw_shared->present_flag_0 |= cpu_to_le32(AMDGPU_VCN_VF_RB_SETUP_FLAG);
--
2.25.1
