On 10/14/2024 1:19 PM, Prike Liang wrote:
> To check the status of S3 suspend completion,
> use the PM core pm_suspend_global_flags bit(1)
> to detect S3 abort events. Therefore, clean up
> the AMDGPU driver's private flag suspend_complete.
>
> Signed-off-by: Prike Liang <Prike.Liang@xxxxxxx>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 --
> drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 2 --
> drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 4 ++--
> drivers/gpu/drm/amd/amdgpu/soc15.c | 7 ++-----
> drivers/gpu/drm/amd/amdgpu/soc21.c | 2 +-
> 5 files changed, 5 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> index 48c9b9b06905..9b35763ae0a7 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> @@ -1111,8 +1111,6 @@ struct amdgpu_device {
> bool in_s3;
> bool in_s4;
> bool in_s0ix;
> - /* indicate amdgpu suspension status */
> - bool suspend_complete;
>
> enum pp_mp1_state mp1_state;
> struct amdgpu_doorbell_index doorbell_index;
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> index 680e44fdee6e..78972151b970 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> @@ -2501,7 +2501,6 @@ static int amdgpu_pmops_suspend(struct device *dev)
> struct drm_device *drm_dev = dev_get_drvdata(dev);
> struct amdgpu_device *adev = drm_to_adev(drm_dev);
>
> - adev->suspend_complete = false;
> if (amdgpu_acpi_is_s0ix_active(adev))
> adev->in_s0ix = true;
> else if (amdgpu_acpi_is_s3_active(adev))
> @@ -2516,7 +2515,6 @@ static int amdgpu_pmops_suspend_noirq(struct device *dev)
> struct drm_device *drm_dev = dev_get_drvdata(dev);
> struct amdgpu_device *adev = drm_to_adev(drm_dev);
>
> - adev->suspend_complete = true;
> if (amdgpu_acpi_should_gpu_reset(adev))
> return amdgpu_asic_reset(adev);
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
> index be320d753507..ba8e66744376 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
> @@ -3276,8 +3276,8 @@ static int gfx_v9_0_cp_gfx_start(struct amdgpu_device *adev)
> * confirmed that the APU gfx10/gfx11 needn't such update.
> */
> if (adev->flags & AMD_IS_APU &&
> - adev->in_s3 && !adev->suspend_complete) {
> - DRM_INFO(" Will skip the CSB packet resubmit\n");
> + adev->in_s3 && !pm_resume_via_firmware()) {
> + DRM_INFO("Will skip the CSB packet resubmit\n");
> return 0;
> }
> r = amdgpu_ring_alloc(ring, gfx_v9_0_get_csb_size(adev) + 4 + 3);
> diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c
> index 12ff6cf568dc..d9d11131a744 100644
> --- a/drivers/gpu/drm/amd/amdgpu/soc15.c
> +++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
> @@ -584,13 +584,10 @@ static bool soc15_need_reset_on_resume(struct amdgpu_device *adev)
> * performing pm core test.
> */
> if (adev->flags & AMD_IS_APU && adev->in_s3 &&
> - !pm_resume_via_firmware()) {
> - adev->suspend_complete = false;
> + !pm_resume_via_firmware())
> return true;
> - } else {
> - adev->suspend_complete = true;
> + else
> return false;
> - }
> }
>
> static int soc15_asic_reset(struct amdgpu_device *adev)
> diff --git a/drivers/gpu/drm/amd/amdgpu/soc21.c b/drivers/gpu/drm/amd/amdgpu/soc21.c
> index c4b950e75133..7a47a21ef00f 100644
> --- a/drivers/gpu/drm/amd/amdgpu/soc21.c
> +++ b/drivers/gpu/drm/amd/amdgpu/soc21.c
> @@ -904,7 +904,7 @@ static bool soc21_need_reset_on_resume(struct amdgpu_device *adev)
> * 2) S3 suspend got aborted and TOS is active.
> */
> if (!(adev->flags & AMD_IS_APU) && adev->in_s3 &&
> - !adev->suspend_complete) {
> + !pm_resume_via_firmware()) {
Looks like this will cover only ACPI based systems. Not sure if that
assumption is valid for dGPU cases.
Thanks,
Lijo
> sol_reg1 = RREG32_SOC15(MP0, 0, regMP0_SMN_C2PMSG_81);
> msleep(100);
> sol_reg2 = RREG32_SOC15(MP0, 0, regMP0_SMN_C2PMSG_81);
