> -----Original Message-----
> From: Hawking Zhang <Hawking.Zhang@xxxxxxx>
> Sent: Monday, December 2, 2019 1:04 AM
> To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx; Min, Frank <Frank.Min@xxxxxxx>;
> Clements, John <John.Clements@xxxxxxx>; Deucher, Alexander
> <Alexander.Deucher@xxxxxxx>
> Cc: Zhang, Hawking <Hawking.Zhang@xxxxxxx>
> Subject: [PATCH 2/3] drm/amdgpu: unload asd in psp hw de-init phase
>
> issue unload_ta_cmd to tOS to unload asd driver
>
> Change-Id: I697cfc1774205ed6cbe22eb3c16143b603543564
> Signed-off-by: Hawking Zhang <Hawking.Zhang@xxxxxxx>
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 36
> +++++++++++++++++++++++++
> 1 file changed, 36 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> index bdc9e7ae4892..0e8907179e07 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> @@ -356,6 +356,40 @@ static int psp_asd_load(struct psp_context *psp)
> return ret;
> }
>
> +static void psp_prep_asd_unload_cmd_buf(struct psp_gfx_cmd_resp
> *cmd,
> + uint32_t asd_session_id)
> +{
> + cmd->cmd_id = GFX_CMD_ID_UNLOAD_TA;
> + cmd->cmd.cmd_unload_ta.session_id = asd_session_id; }
> +
> +static int psp_asd_unload(struct psp_context *psp) {
> + int ret;
> + struct psp_gfx_cmd_resp *cmd;
> +
> + if (amdgpu_sriov_vf(psp->adev))
> + return 0;
> +
> + if (!psp->asd_context.asd_initialized)
> + return 0;
> +
> + cmd = kzalloc(sizeof(struct psp_gfx_cmd_resp), GFP_KERNEL);
> + if (!cmd)
> + return -ENOMEM;
> +
> + psp_prep_asd_unload_cmd_buf(cmd, psp-
> >asd_context.session_id);
> +
> + ret = psp_cmd_submit_buf(psp, NULL, cmd,
> + psp->fence_buf_mc_addr);
> + if (!ret)
> + psp->asd_context.asd_initialized = false;
> +
> + kfree(cmd);
> +
> + return ret;
> +}
> +
> static void psp_prep_reg_prog_cmd_buf(struct psp_gfx_cmd_resp *cmd,
> uint32_t id, uint32_t value)
> {
> @@ -1583,6 +1617,8 @@ static int psp_hw_fini(void *handle)
> psp_hdcp_terminate(psp);
> }
>
> + psp_asd_unload(psp);
> +
> psp_ring_destroy(psp, PSP_RING_TYPE__KM);
>
> pptr = amdgpu_sriov_vf(psp->adev) ? &tmr_buf : NULL;
> --
> 2.17.1
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