/* * Copyright (C) 2013 Red Hat * Author: Rob Clark <robdclark@gmail.com> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published by * the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along with * this program. If not, see <http://www.gnu.org/licenses/>. */ #ifndef __MSM_RINGBUFFER_H__ #define __MSM_RINGBUFFER_H__ #include "msm_drv.h" #define rbmemptr(ring, member) \ ((ring)->memptrs_iova + offsetof(struct msm_rbmemptrs, member)) #define rbmemptr_stats(ring, index, member) \ (rbmemptr((ring), stats) + \ ((index) * sizeof(struct msm_gpu_submit_stats)) + \ offsetof(struct msm_gpu_submit_stats, member)) struct msm_gpu_submit_stats { u64 cpcycles_start; u64 cpcycles_end; u64 alwayson_start; u64 alwayson_end; }; #define MSM_GPU_SUBMIT_STATS_COUNT 64 struct msm_rbmemptrs { volatile uint32_t rptr; volatile uint32_t fence; volatile struct msm_gpu_submit_stats stats[MSM_GPU_SUBMIT_STATS_COUNT]; }; struct msm_ringbuffer { struct msm_gpu *gpu; int id; struct drm_gem_object *bo; uint32_t *start, *end, *cur, *next; struct list_head submits; uint64_t iova; uint32_t seqno; uint32_t hangcheck_fence; struct msm_rbmemptrs *memptrs; uint64_t memptrs_iova; struct msm_fence_context *fctx; spinlock_t lock; }; struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int id, void *memptrs, uint64_t memptrs_iova); void msm_ringbuffer_destroy(struct msm_ringbuffer *ring); /* ringbuffer helpers (the parts that are same for a3xx/a2xx/z180..) */ static inline void OUT_RING(struct msm_ringbuffer *ring, uint32_t data) { /* * ring->next points to the current command being written - it won't be * committed as ring->cur until the flush */ if (ring->next == ring->end) ring->next = ring->start; *(ring->next++) = data; } #endif /* __MSM_RINGBUFFER_H__ */