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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>
113 lines
4.0 KiB
C
113 lines
4.0 KiB
C
/*
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* drivers/video/tegra/host/gk20a/channel_sync_gk20a.h
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*
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* GK20A Channel Synchronization Abstraction
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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_CHANNEL_SYNC_H_
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#define _GK20A_CHANNEL_SYNC_H_
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struct gk20a_channel_sync;
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struct priv_cmd_entry;
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struct channel_gk20a;
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struct gk20a_fence;
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struct gk20a;
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struct gk20a_channel_sync {
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nvgpu_atomic_t refcount;
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/* Generate a gpu wait cmdbuf from syncpoint.
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* Returns a gpu cmdbuf that performs the wait when executed
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*/
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int (*wait_syncpt)(struct gk20a_channel_sync *s, u32 id, u32 thresh,
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struct priv_cmd_entry *entry);
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/* Generate a gpu wait cmdbuf from sync fd.
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* Returns a gpu cmdbuf that performs the wait when executed
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*/
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int (*wait_fd)(struct gk20a_channel_sync *s, int fd,
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struct priv_cmd_entry *entry, int max_wait_cmds);
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/* Increment syncpoint/semaphore.
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* Returns
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* - a gpu cmdbuf that performs the increment when executed,
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* - a fence that can be passed to wait_cpu() and is_expired().
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*/
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int (*incr)(struct gk20a_channel_sync *s,
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struct priv_cmd_entry *entry,
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struct gk20a_fence *fence,
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bool need_sync_fence,
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bool register_irq);
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/* Increment syncpoint/semaphore, preceded by a wfi.
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* Returns
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* - a gpu cmdbuf that performs the increment when executed,
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* - a fence that can be passed to wait_cpu() and is_expired().
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*/
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int (*incr_wfi)(struct gk20a_channel_sync *s,
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struct priv_cmd_entry *entry,
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struct gk20a_fence *fence);
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/* Increment syncpoint/semaphore, so that the returned fence represents
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* work completion (may need wfi) and can be returned to user space.
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* Returns
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* - a gpu cmdbuf that performs the increment when executed,
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* - a fence that can be passed to wait_cpu() and is_expired(),
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* - a gk20a_fence that signals when the incr has happened.
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*/
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int (*incr_user)(struct gk20a_channel_sync *s,
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int wait_fence_fd,
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struct priv_cmd_entry *entry,
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struct gk20a_fence *fence,
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bool wfi,
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bool need_sync_fence,
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bool register_irq);
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/* Reset the channel syncpoint/semaphore. */
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void (*set_min_eq_max)(struct gk20a_channel_sync *s);
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/*
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* Set the channel syncpoint/semaphore to safe state
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* This should be used to reset User managed syncpoint since we don't
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* track threshold values for those syncpoints
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*/
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void (*set_safe_state)(struct gk20a_channel_sync *s);
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/* Returns the sync point id or negative number if no syncpt*/
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int (*syncpt_id)(struct gk20a_channel_sync *s);
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/* Returns the sync point address of sync point or 0 if not supported */
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u64 (*syncpt_address)(struct gk20a_channel_sync *s);
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/* Free the resources allocated by gk20a_channel_sync_create. */
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void (*destroy)(struct gk20a_channel_sync *s);
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};
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void gk20a_channel_sync_destroy(struct gk20a_channel_sync *sync,
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bool set_safe_state);
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struct gk20a_channel_sync *gk20a_channel_sync_create(struct channel_gk20a *c,
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bool user_managed);
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bool gk20a_channel_sync_needs_sync_framework(struct gk20a *g);
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#endif
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