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drm/msm: introduce msm_fence_context

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Better encapsulate the per-timeline stuff into fence-context.  For now
there is just a single fence-context, but eventually we'll also have one
per-CRTC to enable fully explicit fencing.

Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Rob Clark
2016-03-15 17:22:13 -04:00
parent 340faef241
commit ca762a8ae7
9 changed files with 108 additions and 78 deletions
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23
drivers/gpu/drm/msm/msm_gpu.c
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@@ -313,7 +313,7 @@ static void hangcheck_handler(unsigned long data)
if (fence != gpu->hangcheck_fence) {
/* some progress has been made.. ya! */
gpu->hangcheck_fence = fence;
} else if (fence < gpu->submitted_fence) {
} else if (fence < gpu->fctx->last_fence) {
/* no progress and not done.. hung! */
gpu->hangcheck_fence = fence;
dev_err(dev->dev, "%s: hangcheck detected gpu lockup!\n",
@@ -321,12 +321,12 @@ static void hangcheck_handler(unsigned long data)
dev_err(dev->dev, "%s: completed fence: %u\n",
gpu->name, fence);
dev_err(dev->dev, "%s: submitted fence: %u\n",
gpu->name, gpu->submitted_fence);
gpu->name, gpu->fctx->last_fence);
queue_work(priv->wq, &gpu->recover_work);
}
/* if still more pending work, reset the hangcheck timer: */
if (gpu->submitted_fence > gpu->hangcheck_fence)
if (gpu->fctx->last_fence > gpu->hangcheck_fence)
hangcheck_timer_reset(gpu);
/* workaround for missing irq: */
@@ -474,7 +474,7 @@ static void retire_worker(struct work_struct *work)
struct drm_device *dev = gpu->dev;
uint32_t fence = gpu->funcs->last_fence(gpu);
msm_update_fence(gpu->dev, fence);
msm_update_fence(gpu->fctx, fence);
mutex_lock(&dev->struct_mutex);
retire_submits(gpu, fence);
@@ -502,9 +502,7 @@ int msm_gpu_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit,
WARN_ON(!mutex_is_locked(&dev->struct_mutex));
submit->fence = ++priv->next_fence;
gpu->submitted_fence = submit->fence;
submit->fence = ++gpu->fctx->last_fence;
inactive_cancel(gpu);
@@ -512,8 +510,6 @@ int msm_gpu_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit,
msm_rd_dump_submit(submit);
gpu->submitted_fence = submit->fence;
update_sw_cntrs(gpu);
for (i = 0; i < submit->nr_bos; i++) {
@@ -574,6 +570,12 @@ int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev,
gpu->funcs = funcs;
gpu->name = name;
gpu->inactive = true;
gpu->fctx = msm_fence_context_alloc(drm, name);
if (IS_ERR(gpu->fctx)) {
ret = PTR_ERR(gpu->fctx);
gpu->fctx = NULL;
goto fail;
}
INIT_LIST_HEAD(&gpu->active_list);
INIT_WORK(&gpu->retire_work, retire_worker);
@@ -694,4 +696,7 @@ void msm_gpu_cleanup(struct msm_gpu *gpu)
if (gpu->mmu)
gpu->mmu->funcs->destroy(gpu->mmu);
if (gpu->fctx)
msm_fence_context_free(gpu->fctx);
}