From fac53471d0ea9693d314aa2df08d62b2e7e3a0f8 Mon Sep 17 00:00:00 2001 From: YiPeng Chai Date: Thu, 18 Aug 2022 16:46:59 +0800 Subject: drm/amdgpu: TA unload messages are not actually sent to psp when amdgpu is uninstalled V1: The psp_cmd_submit_buf function is called by psp_hw_fini to send TA unload messages to psp to terminate ras, asd and tmr. But when amdgpu is uninstalled, drm_dev_unplug is called earlier than psp_hw_fini in amdgpu_pci_remove, the calling order as follows: static void amdgpu_pci_remove(struct pci_dev *pdev) { drm_dev_unplug ...... amdgpu_driver_unload_kms->amdgpu_device_fini_hw->... ->.hw_fini->psp_hw_fini->... ->psp_ta_unload->psp_cmd_submit_buf ...... } The program will return when calling drm_dev_enter in psp_cmd_submit_buf. So the call to drm_dev_enter in psp_cmd_submit_buf should be removed, so that the TA unload messages can be sent to the psp when amdgpu is uninstalled. V2: 1. Restore psp_cmd_submit_buf to its original code. 2. Move drm_dev_unplug call after amdgpu_driver_unload_kms in amdgpu_pci_remove. 3. Since amdgpu_device_fini_hw is called by amdgpu_driver_unload_kms, remove the unplug check to release device mmio resource in amdgpu_device_fini_hw before calling drm_dev_unplug. Signed-off-by: YiPeng Chai Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index afaa1056e039..62b26f0e37b0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -3969,8 +3969,7 @@ void amdgpu_device_fini_hw(struct amdgpu_device *adev) amdgpu_gart_dummy_page_fini(adev); - if (drm_dev_is_unplugged(adev_to_drm(adev))) - amdgpu_device_unmap_mmio(adev); + amdgpu_device_unmap_mmio(adev); } -- cgit