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drm/amd: Add concept of running prepare_suspend() sequence for IP blocks
[ Upstream commitcb11ca3233
] If any IP blocks allocate memory during their hw_fini() sequence this can cause the suspend to fail under memory pressure. Introduce a new phase that IP blocks can use to allocate memory before suspend starts so that it can potentially be evicted into swap instead. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Stable-dep-of:ca299b4512
("drm/amd: Flush GFXOFF requests in prepare stage") Signed-off-by: Sasha Levin <sashal@kernel.org>
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8b5f720486
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2 changed files with 12 additions and 1 deletions
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@ -4107,7 +4107,7 @@ static int amdgpu_device_evict_resources(struct amdgpu_device *adev)
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int amdgpu_device_prepare(struct drm_device *dev)
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{
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struct amdgpu_device *adev = drm_to_adev(dev);
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int r;
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int i, r;
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if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
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return 0;
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@ -4117,6 +4117,16 @@ int amdgpu_device_prepare(struct drm_device *dev)
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if (r)
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return r;
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for (i = 0; i < adev->num_ip_blocks; i++) {
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if (!adev->ip_blocks[i].status.valid)
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continue;
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if (!adev->ip_blocks[i].version->funcs->prepare_suspend)
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continue;
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r = adev->ip_blocks[i].version->funcs->prepare_suspend((void *)adev);
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if (r)
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return r;
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}
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return 0;
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}
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@ -295,6 +295,7 @@ struct amd_ip_funcs {
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int (*hw_init)(void *handle);
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int (*hw_fini)(void *handle);
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void (*late_fini)(void *handle);
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int (*prepare_suspend)(void *handle);
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int (*suspend)(void *handle);
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int (*resume)(void *handle);
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bool (*is_idle)(void *handle);
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