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ab2b0b5949
During recovery, we set ch->unserviceable at the end after we preempt the TSG and reset the engines. It might be too late and user-space might submit more work to the broken channel which is not desirable. Move setting this unserviceable flag right at the start of recovery sequence. Another thread doing a submit can still read the unserviceable flag just before it is set here, leaving that submit stuck if recovery completes before the submit thread advances enough to set up a post fence visible for other threads. This could be fixed with a big lock or with a double check at the end of the submit code after the job data has been made visible. We still release the fences, semaphore and error notifier wait queues at the end; so user-space would not trigger channel unbind while channel is being recovered. Also, change the handle_mmu_fault APIs to return void as the debug_dump return value is not used in any of the caller APIs. JIRA NVGPU-5843 Change-Id: Ib42c2816dd1dca542e4f630805411cab75fad90e Signed-off-by: Tejal Kudav <tkudav@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2385256 Reviewed-by: automaticguardword <automaticguardword@nvidia.com> Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: svc-mobile-misra <svc-mobile-misra@nvidia.com> Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com> Reviewed-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> GVS: Gerrit_Virtual_Submit Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
49 lines
2.0 KiB
C
49 lines
2.0 KiB
C
/*
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* Copyright (c) 2011-2020, NVIDIA CORPORATION. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef NVGPU_FIFO_MMU_FAULT_GK20A_H
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#define NVGPU_FIFO_MMU_FAULT_GK20A_H
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#include <nvgpu/types.h>
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struct gk20a;
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struct mmu_fault_info;
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void gk20a_fifo_get_mmu_fault_desc(struct mmu_fault_info *mmufault);
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void gk20a_fifo_get_mmu_fault_client_desc(struct mmu_fault_info *mmufault);
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void gk20a_fifo_get_mmu_fault_gpc_desc(struct mmu_fault_info *mmufault);
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void gk20a_fifo_get_mmu_fault_info(struct gk20a *g, u32 mmu_fault_id,
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struct mmu_fault_info *mmufault);
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void gk20a_fifo_mmu_fault_info_dump(struct gk20a *g, u32 engine_id,
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u32 mmu_fault_id, bool fake_fault, struct mmu_fault_info *mmufault);
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void gk20a_fifo_handle_dropped_mmu_fault(struct gk20a *g);
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void gk20a_fifo_handle_mmu_fault(struct gk20a *g, u32 mmu_fault_engines,
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u32 hw_id, bool id_is_tsg);
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void gk20a_fifo_handle_mmu_fault_locked(struct gk20a *g, u32 mmu_fault_engines,
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u32 hw_id, bool id_is_tsg);
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#endif /* NVGPU_FIFO_MMU_FAULT_GK20A_H */
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