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93 lines
2.3 KiB
93 lines
2.3 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Copyright (C) 2013 Red Hat |
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* Author: Rob Clark <[email protected]> |
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*/ |
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#ifndef __MSM_RINGBUFFER_H__ |
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#define __MSM_RINGBUFFER_H__ |
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#include "drm/gpu_scheduler.h" |
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#include "msm_drv.h" |
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#define rbmemptr(ring, member) \ |
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((ring)->memptrs_iova + offsetof(struct msm_rbmemptrs, member)) |
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#define rbmemptr_stats(ring, index, member) \ |
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(rbmemptr((ring), stats) + \ |
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((index) * sizeof(struct msm_gpu_submit_stats)) + \ |
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offsetof(struct msm_gpu_submit_stats, member)) |
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struct msm_gpu_submit_stats { |
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u64 cpcycles_start; |
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u64 cpcycles_end; |
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u64 alwayson_start; |
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u64 alwayson_end; |
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}; |
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#define MSM_GPU_SUBMIT_STATS_COUNT 64 |
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struct msm_rbmemptrs { |
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volatile uint32_t rptr; |
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volatile uint32_t fence; |
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volatile struct msm_gpu_submit_stats stats[MSM_GPU_SUBMIT_STATS_COUNT]; |
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volatile u64 ttbr0; |
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}; |
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struct msm_ringbuffer { |
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struct msm_gpu *gpu; |
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int id; |
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struct drm_gem_object *bo; |
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uint32_t *start, *end, *cur, *next; |
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/* |
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* The job scheduler for this ring. |
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*/ |
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struct drm_gpu_scheduler sched; |
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/* |
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* List of in-flight submits on this ring. Protected by submit_lock. |
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* |
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* Currently just submits that are already written into the ring, not |
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* submits that are still in drm_gpu_scheduler's queues. At a later |
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* step we could probably move to letting drm_gpu_scheduler manage |
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* hangcheck detection and keep track of submit jobs that are in- |
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* flight. |
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*/ |
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struct list_head submits; |
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spinlock_t submit_lock; |
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uint64_t iova; |
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uint32_t seqno; |
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uint32_t hangcheck_fence; |
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struct msm_rbmemptrs *memptrs; |
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uint64_t memptrs_iova; |
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struct msm_fence_context *fctx; |
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/* |
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* preempt_lock protects preemption and serializes wptr updates against |
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* preemption. Can be aquired from irq context. |
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*/ |
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spinlock_t preempt_lock; |
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}; |
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struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int id, |
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void *memptrs, uint64_t memptrs_iova); |
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void msm_ringbuffer_destroy(struct msm_ringbuffer *ring); |
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/* ringbuffer helpers (the parts that are same for a3xx/a2xx/z180..) */ |
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static inline void |
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OUT_RING(struct msm_ringbuffer *ring, uint32_t data) |
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{ |
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/* |
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* ring->next points to the current command being written - it won't be |
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* committed as ring->cur until the flush |
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*/ |
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if (ring->next == ring->end) |
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ring->next = ring->start; |
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*(ring->next++) = data; |
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} |
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#endif /* __MSM_RINGBUFFER_H__ */
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