drm/amdgpu: Add bootloader status check

Add a function to wait till bootloader has reached steady state.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Asad Kamal <asad.kamal@amd.com>
Tested-by: Asad Kamal <asad.kamal@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Author: Lijo Lazar

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

@@ -885,13 +885,20 @@ static void amdgpu_block_invalid_wreg(struct amdgpu_device *adev,
  */
 static int amdgpu_device_asic_init(struct amdgpu_device *adev)
 {
+	int ret;
+
 	amdgpu_asic_pre_asic_init(adev);
 
 	if (adev->ip_versions[GC_HWIP][0] == IP_VERSION(9, 4, 3) ||
-	    adev->ip_versions[GC_HWIP][0] >= IP_VERSION(11, 0, 0))
-		return amdgpu_atomfirmware_asic_init(adev, true);
-	else
+	    adev->ip_versions[GC_HWIP][0] >= IP_VERSION(11, 0, 0)) {
+		amdgpu_psp_wait_for_bootloader(adev);
+		ret = amdgpu_atomfirmware_asic_init(adev, true);
+		return ret;
+	} else {
 		return amdgpu_atom_asic_init(adev->mode_info.atom_context);
+	}
+
+	return 0;
 }
 
 /**
@@ -4697,6 +4704,9 @@ int amdgpu_device_mode1_reset(struct amdgpu_device *adev)
 		dev_err(adev->dev, "GPU mode1 reset failed\n");
 
 	amdgpu_device_load_pci_state(adev->pdev);
+	ret = amdgpu_psp_wait_for_bootloader(adev);
+	if (ret)
+		return ret;
 
 	/* wait for asic to come out of reset */
 	for (i = 0; i < adev->usec_timeout; i++) {
@@ -4708,6 +4718,7 @@ int amdgpu_device_mode1_reset(struct amdgpu_device *adev)
 	}
 
 	amdgpu_atombios_scratch_regs_engine_hung(adev, false);
+
 	return ret;
 }
 

drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c

@@ -2078,6 +2078,17 @@ int psp_securedisplay_invoke(struct psp_context *psp, uint32_t ta_cmd_id)
 }
 /* SECUREDISPLAY end */
 
+int amdgpu_psp_wait_for_bootloader(struct amdgpu_device *adev)
+{
+	struct psp_context *psp = &adev->psp;
+	int ret = 0;
+
+	if (!amdgpu_sriov_vf(adev) && psp->funcs && psp->funcs->wait_for_bootloader != NULL)
+		ret = psp->funcs->wait_for_bootloader(psp);
+
+	return ret;
+}
+
 static int psp_hw_start(struct psp_context *psp)
 {
 	struct amdgpu_device *adev = psp->adev;

drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h

@@ -109,6 +109,7 @@ enum psp_reg_prog_id {
 
 struct psp_funcs {
 	int (*init_microcode)(struct psp_context *psp);
+	int (*wait_for_bootloader)(struct psp_context *psp);
 	int (*bootloader_load_kdb)(struct psp_context *psp);
 	int (*bootloader_load_spl)(struct psp_context *psp);
 	int (*bootloader_load_sysdrv)(struct psp_context *psp);
@@ -533,4 +534,6 @@ int psp_spatial_partition(struct psp_context *psp, int mode);
 
 int is_psp_fw_valid(struct psp_bin_desc bin);
 
+int amdgpu_psp_wait_for_bootloader(struct amdgpu_device *adev);
+
 #endif