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drm/msm: Do hw_init() before capturing GPU state

PATCH New Rob Clark 1 participant 1 message Nov 8, 2021

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Rob Clark

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PATCH 1/1 drm/msm: Do hw_init() before capturing GPU state

From: Rob Clark <[email protected]>

In particular, we need to ensure all the necessary blocks are switched to 64b mode (a5xx+) otherwise the high bits of the address of the BO to snapshot state into will be ignored, resulting in:

*** gpu fault: ttbr0=0000000000000000 iova=0000000000012000 dir=READ type=TRANSLATION source=CP (0,0,0,0) platform 506a000.gmu: [drm:a6xx_gmu_set_oob] *ERROR* Timeout waiting for GMU OOB set BOOT_SLUMBER: 0x0

Fixes 4f776f4511c7 ("drm/msm/gpu: Convert the GPU show function to use the GPU state")
---
 drivers/gpu/drm/msm/msm_debugfs.c | 1 +
 1 file changed, 1 insertion(+)
drivers/gpu/drm/msm/msm_debugfs.c +1 -0
index b4d1a5162d1c..956b1efc3721 100644
@@ -77,6 +77,7 @@ static int msm_gpu_open(struct inode *inode, struct file *file)
 		goto free_priv;
 
 	pm_runtime_get_sync(&gpu->pdev->dev);
+	msm_gpu_hw_init(gpu);
 	show_priv->state = gpu->funcs->gpu_state_get(gpu);
 	pm_runtime_put_sync(&gpu->pdev->dev);
 
Signature · 1 line
2.31.1