lkml.org 
[lkml]   [2021]   [Dec]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 5.4 49/70] drm/msm: Do hw_init() before capturing GPU state
Date
From: Rob Clark <robdclark@chromium.org>

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: 4f776f4511c7 ("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>
---
drivers/gpu/drm/msm/msm_debugfs.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/gpu/drm/msm/msm_debugfs.c
+++ b/drivers/gpu/drm/msm/msm_debugfs.c
@@ -77,6 +77,7 @@ static int msm_gpu_open(struct inode *in
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);


\
 
 \ /
  Last update: 2021-12-06 16:41    [W:0.734 / U:0.000 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site