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gpu: nvgpu: add SET_CTX_MMU_DEBUG_MODE ioctl

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Added NVGPU_DBG_GPU_IOCTL_SET_CTX_MMU_DEBUG_MODE ioctl to set MMU
debug mode for a given context.

Added gr.set_mmu_debug_mode HAL to change NV_PGPC_PRI_MMU_DEBUG_CTRL
for a given channel. HAL implementation for native case is
gm20b_gr_set_mmu_debug_mode. It internally uses regops, which directly
writes to the register if the context is resident, or writes to
gr context otherwise.

Added NVGPU_SUPPORT_SET_CTX_MMU_DEBUG_MODE to enable the feature.
NV_PGPC_PRI_MMU_DEBUG_CTRL has to be context switched in FECS ucode,
so the feature is only enabled on TU104 for now.

Bug 2515097
But 2713590

Change-Id: Ib4efaf06fc47a8539b4474f94c68c20ce225263f
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2110720
(cherry-picked from commit af2ccb811d)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2208767
Reviewed-by: Kajetan Dutka <kdutka@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: Winnie Hsu <whsu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
Tested-by: Kajetan Dutka <kdutka@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Thomas Fleury
2019-04-30 17:19:51 -07:00
committed by mobile promotions
parent 6e91ecaae7
commit dc281d6a9e
15 changed files with 122 additions and 12 deletions
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4
drivers/gpu/nvgpu/os/linux/ioctl_ctrl.c
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2011-2018, NVIDIA Corporation. All rights reserved.
* Copyright (c) 2011-2020, 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,
@@ -224,6 +224,8 @@ static struct nvgpu_flags_mapping flags_mapping[] = {
NVGPU_SUPPORT_SCG},
{NVGPU_GPU_FLAGS_SUPPORT_VPR,
NVGPU_SUPPORT_VPR},
{NVGPU_GPU_FLAGS_SUPPORT_SET_CTX_MMU_DEBUG_MODE,
NVGPU_SUPPORT_SET_CTX_MMU_DEBUG_MODE},
};
static u64 nvgpu_ctrl_ioctl_gpu_characteristics_flags(struct gk20a *g)