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gpu: nvgpu: add golden image check for tpc_pg_mask

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- Setting different tpc_pg_mask value leads to GPU crash.
- It is observed that with GPU railgating disabled, if
  tpc_pg_mask is set, "the gpu is powered on" error is
  reported and it won't allow to set the tpc_pg_mask, which
  is expected.
- With GPU railgating enabled, the different tpc_pg_mask
  value is set and the GPU is crashed.
- So, add check for golden image initialized before setting the
  TPC, GPC and FBP PG mask.
- This check won't allow to update TPC, GPC and FBP mask after
  golden image initialization and thus no GPU crash happens.

Bug 3544499

Change-Id: Ia003beaaec9dead22da74ea5862a81986780966b
Signed-off-by: Divya <dsinghatwari@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2672202
(cherry picked from commit 05a1f927f8)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2673513
Reviewed-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Divya
2022-02-18 13:17:48 +00:00
committed by mobile promotions
parent 3336131d17
commit 856c1c82de
1 changed files with 28 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
drivers/gpu/nvgpu/os/linux/sysfs.c
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2011-2021, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2011-2022, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@@ -850,6 +850,7 @@ static ssize_t gpc_pg_mask_store(struct device *dev,
{
struct gk20a *g = get_gk20a(dev);
struct gk20a_platform *platform = dev_get_drvdata(dev);
struct nvgpu_gr_obj_ctx_golden_image *gr_golden_image = NULL;
unsigned long val = 0;
int err = 0;
@@ -861,8 +862,14 @@ static ssize_t gpc_pg_mask_store(struct device *dev,
return -EINVAL;
}
if (nvgpu_is_powered_on(g)) {
nvgpu_err(g, "gpu already powered on");
if (g->gr != NULL) {
gr_golden_image = nvgpu_gr_get_golden_image_ptr(g);
}
if (gr_golden_image &&
nvgpu_gr_obj_ctx_get_golden_image_size(gr_golden_image)
!= 0) {
nvgpu_err(g, "golden image size already initialized");
nvgpu_mutex_release(&g->static_pg_lock);
return -ENODEV;
}
@@ -923,6 +930,7 @@ static ssize_t fbp_pg_mask_store(struct device *dev,
{
struct gk20a *g = get_gk20a(dev);
struct gk20a_platform *platform = dev_get_drvdata(dev);
struct nvgpu_gr_obj_ctx_golden_image *gr_golden_image = NULL;
unsigned long val = 0;
int err = 0;
@@ -934,8 +942,14 @@ static ssize_t fbp_pg_mask_store(struct device *dev,
return -EINVAL;
}
if (nvgpu_is_powered_on(g)) {
nvgpu_err(g, "gpu is already powered on");
if (g->gr != NULL) {
gr_golden_image = nvgpu_gr_get_golden_image_ptr(g);
}
if (gr_golden_image &&
nvgpu_gr_obj_ctx_get_golden_image_size(gr_golden_image)
!= 0) {
nvgpu_err(g, "golden image size already initialized");
nvgpu_mutex_release(&g->static_pg_lock);
return -ENODEV;
}
@@ -1004,6 +1018,7 @@ static ssize_t tpc_pg_mask_store(struct device *dev,
{
struct gk20a *g = get_gk20a(dev);
struct gk20a_platform *platform = dev_get_drvdata(dev);
struct nvgpu_gr_obj_ctx_golden_image *gr_golden_image = NULL;
unsigned long val = 0;
int err = 0;
u32 i;
@@ -1028,8 +1043,14 @@ static ssize_t tpc_pg_mask_store(struct device *dev,
goto exit;
}
if (nvgpu_is_powered_on(g)) {
nvgpu_err(g, "gpu is already powered on");
if (g->gr != NULL) {
gr_golden_image = nvgpu_gr_get_golden_image_ptr(g);
}
if (gr_golden_image &&
nvgpu_gr_obj_ctx_get_golden_image_size(gr_golden_image)
!= 0) {
nvgpu_err(g, "golden image size already initialized");
nvgpu_mutex_release(&g->static_pg_lock);
return -ENODEV;
}