[PATCH] drm/amdgpu: fix resume failures casued by psp fw loading sequence change

[Zhang, Hawking]

Good point. Please check v2.

Regards,
Hawking
-----Original Message-----
From: Chen, Guchun <Guchun.Chen at amd.com> 
Sent: 2019年12月6日 17:04
To: Zhang, Hawking <Hawking.Zhang at amd.com>; amd-gfx at lists.freedesktop.org; Ma, Le <Le.Ma at amd.com>; Clements, John <John.Clements at amd.com>; Deucher, Alexander <Alexander.Deucher at amd.com>
Cc: Zhang, Hawking <Hawking.Zhang at amd.com>
Subject: RE: [PATCH] drm/amdgpu: fix resume failures casued by psp fw loading sequence change

[AMD Public Use]




Regards,
Guchun

-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Hawking Zhang
Sent: Friday, December 6, 2019 5:00 PM
To: amd-gfx at lists.freedesktop.org; Ma, Le <Le.Ma at amd.com>; Clements, John <John.Clements at amd.com>; Deucher, Alexander <Alexander.Deucher at amd.com>
Cc: Zhang, Hawking <Hawking.Zhang at amd.com>
Subject: [PATCH] drm/amdgpu: fix resume failures casued by psp fw loading sequence change

this fix the regression caused by asd/ta loading sequence adjustment recently. asd/ta loading was move out from hw_start and should also be applied to psp_resume. otherwise those fw loading will be ignored in resume phase.

Change-Id: I57010bc7ddf71ac46d3fb544d27932664190cf04
Signed-off-by: Hawking Zhang <Hawking.Zhang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 33 +++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index ceea8314d88d..2ef16d4c752d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -1702,6 +1702,39 @@ static int psp_resume(void *handle)
 	if (ret)
 		goto failed;
 
+	ret = psp_asd_load(psp);
+	if (ret) {
+		DRM_ERROR("PSP load asd failed!\n");
+		return ret;
[Guchun] We can't directly return here, as at the early stage of this function psp_resume, we have enabled lock. We need to use goto failed to unlock, like other failure case.
+	}
+
+	if (adev->gmc.xgmi.num_physical_nodes > 1) {
+		ret = psp_xgmi_initialize(psp);
+		/* Warning the XGMI seesion initialize failure
+		 * Instead of stop driver initialization
+		 */
+		if (ret)
+			dev_err(psp->adev->dev,
+				"XGMI: Failed to initialize XGMI session\n");
+	}
+
+	if (psp->adev->psp.ta_fw) {
+		ret = psp_ras_initialize(psp);
+		if (ret)
+			dev_err(psp->adev->dev,
+					"RAS: Failed to initialize RAS\n");
+
+		ret = psp_hdcp_initialize(psp);
+		if (ret)
+			dev_err(psp->adev->dev,
+				"HDCP: Failed to initialize HDCP\n");
+
+		ret = psp_dtm_initialize(psp);
+		if (ret)
+			dev_err(psp->adev->dev,
+				"DTM: Failed to initialize DTM\n");
+	}
+
 	mutex_unlock(&adev->firmware.mutex);
 
 	return 0;
--
2.17.1

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