linux/drivers/gpu/drm/msm/adreno/a5xx_preempt.c

// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (c) 2017 The Linux Foundation. All rights reserved.
 */

#include "msm_gem.h"
#include "a5xx_gpu.h"

/*
 * Try to transition the preemption state from old to new. Return
 * true on success or false if the original state wasn't 'old'
 */
static inline bool try_preempt_state(struct a5xx_gpu *a5xx_gpu,
		enum preempt_state old, enum preempt_state new)
{ … }

/*
 * Force the preemption state to the specified state.  This is used in cases
 * where the current state is known and won't change
 */
static inline void set_preempt_state(struct a5xx_gpu *gpu,
		enum preempt_state new)
{ … }

/* Write the most recent wptr for the given ring into the hardware */
static inline void update_wptr(struct msm_gpu *gpu, struct msm_ringbuffer *ring)
{ … }

/* Return the highest priority ringbuffer with something in it */
static struct msm_ringbuffer *get_next_ring(struct msm_gpu *gpu)
{ … }

static void a5xx_preempt_timer(struct timer_list *t)
{ … }

/* Try to trigger a preemption switch */
void a5xx_preempt_trigger(struct msm_gpu *gpu)
{ … }

void a5xx_preempt_irq(struct msm_gpu *gpu)
{ … }

void a5xx_preempt_hw_init(struct msm_gpu *gpu)
{ … }

static int preempt_init_ring(struct a5xx_gpu *a5xx_gpu,
		struct msm_ringbuffer *ring)
{ … }

void a5xx_preempt_fini(struct msm_gpu *gpu)
{ … }

void a5xx_preempt_init(struct msm_gpu *gpu)
{ … }