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disp: msm: sde: signal dma-fence and handle callbacks from sde driver

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Signal the retire/release fences from within the sde driver instead of
calling the dma-fence api. This allows the driver to set the desired
timestamp for the fences. Replicate the dma-fence api functionality to
set the signaled and timestamp flags and handle the registered callbacks.

Change-Id: I951b599fc92d6d054847f24f0acb04aee27bdefb
Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>
This commit is contained in:
Veera Sundaram Sankaran
2020-10-01 14:55:10 -07:00
parent b965fdcee5
commit 835f8513dc
1 changed files with 30 additions and 4 deletions
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34
msm/sde/sde_fence.c
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@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.
* Copyright (c) 2016-2021, The Linux Foundation. All rights reserved.
*/
#define pr_fmt(fmt) "[drm:%s:%d] " fmt, __func__, __LINE__
@@ -12,6 +12,30 @@
#define TIMELINE_VAL_LENGTH 128
int _dma_fence_signal_timestamp_locked(struct dma_fence *fence, ktime_t ts)
{
struct dma_fence_cb *cur, *tmp;
struct list_head cb_list;
lockdep_assert_held(fence->lock);
if (unlikely(test_and_set_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags)))
return -EINVAL;
/* Stash the cb_list before replacing it with the timestamp */
list_replace(&fence->cb_list, &cb_list);
fence->timestamp = ts;
set_bit(DMA_FENCE_FLAG_TIMESTAMP_BIT, &fence->flags);
list_for_each_entry_safe(cur, tmp, &cb_list, node) {
INIT_LIST_HEAD(&cur->node);
cur->func(fence, cur);
}
return 0;
}
void *sde_sync_get(uint64_t fd)
{
/* force signed compare, fdget accepts an int argument */
@@ -289,7 +313,7 @@ void sde_fence_prepare(struct sde_fence_context *ctx)
}
}
static void _sde_fence_trigger(struct sde_fence_context *ctx, bool error)
static void _sde_fence_trigger(struct sde_fence_context *ctx, bool error, ktime_t ts)
{
unsigned long flags;
struct sde_fence *fc, *next;
@@ -307,7 +331,9 @@ static void _sde_fence_trigger(struct sde_fence_context *ctx, bool error)
spin_lock_irqsave(&ctx->lock, flags);
if (error)
dma_fence_set_error(&fc->base, -EBUSY);
is_signaled = dma_fence_is_signaled_locked(&fc->base);
is_signaled = sde_fence_signaled(&fc->base);
if (is_signaled)
_dma_fence_signal_timestamp_locked(&fc->base, ts);
spin_unlock_irqrestore(&ctx->lock, flags);
if (is_signaled) {
@@ -397,7 +423,7 @@ void sde_fence_signal(struct sde_fence_context *ctx, ktime_t ts,
SDE_EVT32(ctx->drm_id, ctx->done_count, ctx->commit_count,
ktime_to_us(ts));
_sde_fence_trigger(ctx, (fence_event == SDE_FENCE_SIGNAL_ERROR));
_sde_fence_trigger(ctx, (fence_event == SDE_FENCE_SIGNAL_ERROR), ts);
}
void sde_fence_timeline_status(struct sde_fence_context *ctx,