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

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commit e4840d537c2c6b1189d4de16ee0f4820e069dcea upstream.

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: 4f776f4511 ("drm/msm/gpu: Convert the GPU show function to use the GPU state")
Signed-off-by: Rob Clark <robdclark@chromium.org>
Link: https://lore.kernel.org/r/20211108180122.487859-1-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rob Clark 2021-11-08 10:01:22 -08:00 committed by Greg Kroah-Hartman
parent 10bad5a197
commit 9d15962826
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/msm/msm_debugfs.c
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@ -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);