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drm/amdgpu: remove fence fallback

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DC doesn't seem to have a fallback path either.

So when interrupts doesn't work any more we are pretty much busted no
matter what.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2018-09-18 10:38:09 +02:00 committed by Alex Deucher
parent 32f2a0d117
commit 3e14bedc58
3 changed files with 0 additions and 58 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View file

@ -146,7 +146,6 @@ extern int amdgpu_cik_support;
#define AMDGPU_DEFAULT_GTT_SIZE_MB 3072ULL /* 3GB by default */
#define AMDGPU_WAIT_IDLE_TIMEOUT_IN_MS 3000
#define AMDGPU_MAX_USEC_TIMEOUT 100000 /* 100 ms */
#define AMDGPU_FENCE_JIFFIES_TIMEOUT (HZ / 2)
/* AMDGPU_IB_POOL_SIZE must be a power of 2 */
#define AMDGPU_IB_POOL_SIZE 16
#define AMDGPU_DEBUGFS_MAX_COMPONENTS 32

56
drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
View file

@ -195,19 +195,6 @@ int amdgpu_fence_emit_polling(struct amdgpu_ring *ring, uint32_t *s)
return 0;
}
/**
* amdgpu_fence_schedule_fallback - schedule fallback check
*
* @ring: pointer to struct amdgpu_ring
*
* Start a timer as fallback to our interrupts.
*/
static void amdgpu_fence_schedule_fallback(struct amdgpu_ring *ring)
{
mod_timer(&ring->fence_drv.fallback_timer,
jiffies + AMDGPU_FENCE_JIFFIES_TIMEOUT);
}
/**
* amdgpu_fence_process - check for fence activity
*
@ -229,9 +216,6 @@ void amdgpu_fence_process(struct amdgpu_ring *ring)
} while (atomic_cmpxchg(&drv->last_seq, last_seq, seq) != last_seq);
if (seq != ring->fence_drv.sync_seq)
amdgpu_fence_schedule_fallback(ring);
if (unlikely(seq == last_seq))
return;
@ -262,21 +246,6 @@ void amdgpu_fence_process(struct amdgpu_ring *ring)
} while (last_seq != seq);
}
/**
* amdgpu_fence_fallback - fallback for hardware interrupts
*
* @work: delayed work item
*
* Checks for fence activity.
*/
static void amdgpu_fence_fallback(struct timer_list *t)
{
struct amdgpu_ring *ring = from_timer(ring, t,
fence_drv.fallback_timer);
amdgpu_fence_process(ring);
}
/**
* amdgpu_fence_wait_empty - wait for all fences to signal
*
@ -424,8 +393,6 @@ int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring,
atomic_set(&ring->fence_drv.last_seq, 0);
ring->fence_drv.initialized = false;
timer_setup(&ring->fence_drv.fallback_timer, amdgpu_fence_fallback, 0);
ring->fence_drv.num_fences_mask = num_hw_submission * 2 - 1;
spin_lock_init(&ring->fence_drv.lock);
ring->fence_drv.fences = kcalloc(num_hw_submission * 2, sizeof(void *),
@ -501,7 +468,6 @@ void amdgpu_fence_driver_fini(struct amdgpu_device *adev)
amdgpu_irq_put(adev, ring->fence_drv.irq_src,
ring->fence_drv.irq_type);
drm_sched_fini(&ring->sched);
del_timer_sync(&ring->fence_drv.fallback_timer);
for (j = 0; j <= ring->fence_drv.num_fences_mask; ++j)
dma_fence_put(ring->fence_drv.fences[j]);
kfree(ring->fence_drv.fences);
@ -594,27 +560,6 @@ static const char *amdgpu_fence_get_timeline_name(struct dma_fence *f)
return (const char *)fence->ring->name;
}
/**
* amdgpu_fence_enable_signaling - enable signalling on fence
* @fence: fence
*
* This function is called with fence_queue lock held, and adds a callback
* to fence_queue that checks if this fence is signaled, and if so it
* signals the fence and removes itself.
*/
static bool amdgpu_fence_enable_signaling(struct dma_fence *f)
{
struct amdgpu_fence *fence = to_amdgpu_fence(f);
struct amdgpu_ring *ring = fence->ring;
if (!timer_pending(&ring->fence_drv.fallback_timer))
amdgpu_fence_schedule_fallback(ring);
DMA_FENCE_TRACE(&fence->base, "armed on ring %i!\n", ring->idx);
return true;
}
/**
* amdgpu_fence_free - free up the fence memory
*
@ -645,7 +590,6 @@ static void amdgpu_fence_release(struct dma_fence *f)
static const struct dma_fence_ops amdgpu_fence_ops = {
.get_driver_name = amdgpu_fence_get_driver_name,
.get_timeline_name = amdgpu_fence_get_timeline_name,
.enable_signaling = amdgpu_fence_enable_signaling,
.release = amdgpu_fence_release,
};

1
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
View file

@ -77,7 +77,6 @@ struct amdgpu_fence_driver {
bool initialized;
struct amdgpu_irq_src *irq_src;
unsigned irq_type;
struct timer_list fallback_timer;
unsigned num_fences_mask;
spinlock_t lock;
struct dma_fence **fences;