93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (C) 2013 Red Hat
|
|
* Author: Rob Clark <robdclark@gmail.com>
|
|
*/
|
|
|
|
#ifndef __MSM_RINGBUFFER_H__
|
|
#define __MSM_RINGBUFFER_H__
|
|
|
|
#include "drm/gpu_scheduler.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];
|
|
volatile u64 ttbr0;
|
|
};
|
|
|
|
struct msm_ringbuffer {
|
|
struct msm_gpu *gpu;
|
|
int id;
|
|
struct drm_gem_object *bo;
|
|
uint32_t *start, *end, *cur, *next;
|
|
|
|
/*
|
|
* The job scheduler for this ring.
|
|
*/
|
|
struct drm_gpu_scheduler sched;
|
|
|
|
/*
|
|
* List of in-flight submits on this ring. Protected by submit_lock.
|
|
*
|
|
* Currently just submits that are already written into the ring, not
|
|
* submits that are still in drm_gpu_scheduler's queues. At a later
|
|
* step we could probably move to letting drm_gpu_scheduler manage
|
|
* hangcheck detection and keep track of submit jobs that are in-
|
|
* flight.
|
|
*/
|
|
struct list_head submits;
|
|
spinlock_t submit_lock;
|
|
|
|
uint64_t iova;
|
|
uint32_t hangcheck_fence;
|
|
struct msm_rbmemptrs *memptrs;
|
|
uint64_t memptrs_iova;
|
|
struct msm_fence_context *fctx;
|
|
|
|
/*
|
|
* preempt_lock protects preemption and serializes wptr updates against
|
|
* preemption. Can be aquired from irq context.
|
|
*/
|
|
spinlock_t preempt_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__ */
|