linux/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h, branch v4.15

drm/amdgpu: busywait KIQ register accessing (v4)

2017-10-19T19:27:19Z

Register accessing is performed when IRQ is disabled. Never sleep in this function. Known issue: dead sleep in many use cases of index/data registers. v2: - wrap polling fence functions. - don't trigger IRQ for polling in case of wrongly fence signal. v3: - handle wrap round gracefully. - add comments for polling function v4: - don't return negative timeout confused with error code Signed-off-by: pding Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: add framework for HW specific priority settings v9

2017-10-09T20:30:21Z

Add an initial framework for changing the HW priorities of rings. The framework allows requesting priority changes for the lifetime of an amdgpu_job. After the job completes the priority will decay to the next lowest priority for which a request is still valid. A new ring function set_priority() can now be populated to take care of the HW specific programming sequence for priority changes. v2: set priority before emitting IB, and take a ref on amdgpu_job v3: use AMD_SCHED_PRIORITY_* instead of AMDGPU_CTX_PRIORITY_* v4: plug amdgpu_ring_restore_priority_cb into amdgpu_job_free_cb v5: use atomic for tracking job priorities instead of last_job v6: rename amdgpu_ring_priority_[get/put]() and align parameters v7: replace spinlocks with mutexes for KIQ compatibility v8: raise ring priority during cs_ioctl, instead of job_run v9: priority_get() before push_job() Reviewed-by: Christian König Acked-by: Christian König Signed-off-by: Andres Rodriguez Signed-off-by: Alex Deucher

drm/amdgpu: map compute rings by least recently used pipe

2017-09-28T20:03:22Z

This patch provides a guarantee that the first n queues allocated by an application will be on different pipes. Where n is the number of pipes available from the hardware. This helps avoid ring aliasing which can result in work executing in time-sliced mode instead of truly parallel mode. Reviewed-by: Alex Deucher Signed-off-by: Andres Rodriguez Signed-off-by: Alex Deucher

drm/amdgpu: fix amdgpu_ring_write_multiple

2017-07-14T15:05:56Z

Overwriting still used ring content has a low probability to cause problems, not writing at all has 100% probability to cause problems. Signed-off-by: Christian König Reviewed-by: Alex Deucher Acked-by: Felix Kuehling

drm/amdgpu: move ring helpers to amdgpu_ring.h

2017-07-14T15:05:56Z

Keep them where they belong. Signed-off-by: Christian König Reviewed-by: Alex Deucher Acked-by: Felix Kuehling

drm/amdgpu: Move compute vm bug logic to amdgpu_vm.c

2017-06-01T20:00:20Z

In review, Christian would like to keep the logic inside amdgpu_vm.c with a cost of slightly slower. The loop is still optimized out with this patch. v2: remove the if statement. Now it is not slower. Signed-off-by: Alex Xie Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: guarantee bijective mapping of ring ids for LRU v3

2017-05-31T20:49:03Z

Depending on usage patterns, the current LRU policy may create a non-injective mapping between userspace ring ids and kernel rings. This behaviour is undesired as apps that attempt to fill all HW blocks would be unable to reach some of them. This change forces the LRU policy to create bijective mappings only. v2: compress ring_blacklist v3: simplify amdgpu_ring_is_blacklisted() logic Signed-off-by: Andres Rodriguez Reviewed-by: Nicolai Hähnle Signed-off-by: Alex Deucher

drm/amdgpu: implement lru amdgpu_queue_mgr policy for compute v4

2017-05-31T20:49:02Z

Use an LRU policy to map usermode rings to HW compute queues. Most compute clients use one queue, and usually the first queue available. This results in poor pipe/queue work distribution when multiple compute apps are running. In most cases pipe 0 queue 0 is the only queue that gets used. In order to better distribute work across multiple HW queues, we adopt a policy to map the usermode ring ids to the LRU HW queue. This fixes a large majority of multi-app compute workloads sharing the same HW queue, even though 7 other queues are available. v2: use ring->funcs->type instead of ring->hw_ip v3: remove amdgpu_queue_mapper_funcs v4: change ring_lru_list_lock to spinlock, grab only once in lru_get() Signed-off-by: Andres Rodriguez Signed-off-by: Alex Deucher

drm/amdgpu: Optimize a function called by every IB sheduling

2017-05-31T18:16:38Z

Move several if statements and a loop statment from run time to initialization time. Signed-off-by: Alex Xie Reviewed-by: Chunming Zhou Signed-off-by: Alex Deucher

drm/amdgpu: add vcn enc ring type and functions

2017-05-24T21:41:41Z

Add the ring function callbacks for the encode rings. Signed-off-by: Leo Liu Reviewed-by: Christian König Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher