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d0e4dfd6ef
This patch deals with cleanups meant to make things simpler for the upcoming os abstraction patches for the sync framework. This patch causes some substantial changes which are listed out as follows. 1) sync_timeline is moved out of gk20a_fence into struct nvgpu_channel_linux. New function pointers are created to facilitate os independent methods for enabling/disabling timeline and are now named as os_fence_framework. These function pointers are located in the struct os_channel under struct gk20a. 2) construction of the channel_sync require nvgpu_finalize_poweron_linux() to be invoked before invocations to nvgpu_init_mm_ce_context(). Hence, these methods are now moved away from gk20a_finalize_poweron() and invoked after nvgpu_finalize_poweron_linux(). 3) sync_fence creation is now delinked from fence construction and move to the channel_sync_gk20a's channel_incr methods. These sync_fences are mainly associated with post_fences. 4) In case userspace requires the sync_fences to be constructed, we try to obtain an fd before the gk20a_channel_submit_gpfifo() instead of trying to do that later. This is used to avoid potential after effects of duplicate work submission due to failure to obtain an unused fd. JIRA NVGPU-66 Change-Id: I42a3e4e2e692a113b1b36d2b48ab107ae4444dfa Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1678400 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
101 lines
3.0 KiB
C
101 lines
3.0 KiB
C
/*
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* drivers/video/tegra/host/gk20a/fence_gk20a.h
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*
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* GK20A Fences
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*
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* Copyright (c) 2014-2018, 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 _GK20A_FENCE_H_
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#define _GK20A_FENCE_H_
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#include <nvgpu/types.h>
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#include <nvgpu/kref.h>
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struct platform_device;
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struct sync_timeline;
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struct sync_fence;
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struct nvgpu_semaphore;
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struct channel_gk20a;
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struct gk20a;
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struct gk20a_fence_ops;
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struct gk20a_fence {
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struct gk20a *g;
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/* Valid for all fence types: */
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bool valid;
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struct nvgpu_ref ref;
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const struct gk20a_fence_ops *ops;
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struct sync_fence *os_fence;
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/* Valid for fences created from semaphores: */
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struct nvgpu_semaphore *semaphore;
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struct nvgpu_cond *semaphore_wq;
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/* Valid for fences created from syncpoints: */
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struct nvgpu_nvhost_dev *nvhost_dev;
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u32 syncpt_id;
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u32 syncpt_value;
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/* Valid for fences part of a pre-allocated fence pool */
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struct nvgpu_allocator *allocator;
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};
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/* Fences can be created from semaphores or syncpoint (id, value) pairs */
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int gk20a_fence_from_semaphore(
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struct gk20a_fence *fence_out,
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struct nvgpu_semaphore *semaphore,
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struct nvgpu_cond *semaphore_wq,
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struct sync_fence *os_fence);
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int gk20a_fence_from_syncpt(
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struct gk20a_fence *fence_out,
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struct nvgpu_nvhost_dev *nvhost_dev,
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u32 id, u32 value,
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struct sync_fence *os_fence);
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int gk20a_alloc_fence_pool(
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struct channel_gk20a *c,
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unsigned int count);
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void gk20a_free_fence_pool(
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struct channel_gk20a *c);
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struct gk20a_fence *gk20a_alloc_fence(
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struct channel_gk20a *c);
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void gk20a_init_fence(struct gk20a_fence *f,
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const struct gk20a_fence_ops *ops,
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struct sync_fence *os_fence);
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/* Fence operations */
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void gk20a_fence_put(struct gk20a_fence *f);
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struct gk20a_fence *gk20a_fence_get(struct gk20a_fence *f);
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int gk20a_fence_wait(struct gk20a *g, struct gk20a_fence *f,
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unsigned long timeout);
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bool gk20a_fence_is_expired(struct gk20a_fence *f);
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bool gk20a_fence_is_valid(struct gk20a_fence *f);
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int gk20a_fence_install_fd(struct gk20a_fence *f, int fd);
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#endif
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