LXR linux/drivers/gpu/drm/etnaviv/etnaviv

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * Copyright (C) 2015-2018 Etnaviv Project
   4 */
   5
   6#ifndef __ETNAVIV_GEM_H__
   7#define __ETNAVIV_GEM_H__
   8
   9#include <linux/reservation.h>
  10#include "etnaviv_cmdbuf.h"
  11#include "etnaviv_drv.h"
  12
  13struct dma_fence;
  14struct etnaviv_gem_ops;
  15struct etnaviv_gem_object;
  16
  17struct etnaviv_gem_userptr {
  18        uintptr_t ptr;
  19        struct mm_struct *mm;
  20        bool ro;
  21};
  22
  23struct etnaviv_vram_mapping {
  24        struct list_head obj_node;
  25        struct list_head scan_node;
  26        struct list_head mmu_node;
  27        struct etnaviv_gem_object *object;
  28        struct etnaviv_iommu *mmu;
  29        struct drm_mm_node vram_node;
  30        unsigned int use;
  31        u32 iova;
  32};
  33
  34struct etnaviv_gem_object {
  35        struct drm_gem_object base;
  36        const struct etnaviv_gem_ops *ops;
  37        struct mutex lock;
  38
  39        u32 flags;
  40
  41        struct list_head gem_node;
  42        struct etnaviv_gpu *gpu;     /* non-null if active */
  43        atomic_t gpu_active;
  44        u32 access;
  45
  46        struct page **pages;
  47        struct sg_table *sgt;
  48        void *vaddr;
  49
  50        /* normally (resv == &_resv) except for imported bo's */
  51        struct reservation_object *resv;
  52        struct reservation_object _resv;
  53
  54        struct list_head vram_list;
  55
  56        /* cache maintenance */
  57        u32 last_cpu_prep_op;
  58
  59        struct etnaviv_gem_userptr userptr;
  60};
  61
  62static inline
  63struct etnaviv_gem_object *to_etnaviv_bo(struct drm_gem_object *obj)
  64{
  65        return container_of(obj, struct etnaviv_gem_object, base);
  66}
  67
  68struct etnaviv_gem_ops {
  69        int (*get_pages)(struct etnaviv_gem_object *);
  70        void (*release)(struct etnaviv_gem_object *);
  71        void *(*vmap)(struct etnaviv_gem_object *);
  72        int (*mmap)(struct etnaviv_gem_object *, struct vm_area_struct *);
  73};
  74
  75static inline bool is_active(struct etnaviv_gem_object *etnaviv_obj)
  76{
  77        return atomic_read(&etnaviv_obj->gpu_active) != 0;
  78}
  79
  80#define MAX_CMDS 4
  81
  82struct etnaviv_gem_submit_bo {
  83        u32 flags;
  84        struct etnaviv_gem_object *obj;
  85        struct etnaviv_vram_mapping *mapping;
  86        struct dma_fence *excl;
  87        unsigned int nr_shared;
  88        struct dma_fence **shared;
  89};
  90
  91/* Created per submit-ioctl, to track bo's and cmdstream bufs, etc,
  92 * associated with the cmdstream submission for synchronization (and
  93 * make it easier to unwind when things go wrong, etc).
  94 */
  95struct etnaviv_gem_submit {
  96        struct drm_sched_job sched_job;
  97        struct kref refcount;
  98        struct etnaviv_gpu *gpu;
  99        struct dma_fence *out_fence, *in_fence;
 100        int out_fence_id;
 101        struct list_head node; /* GPU active submit list */
 102        struct etnaviv_cmdbuf cmdbuf;
 103        bool runtime_resumed;
 104        u32 exec_state;
 105        u32 flags;
 106        unsigned int nr_pmrs;
 107        struct etnaviv_perfmon_request *pmrs;
 108        unsigned int nr_bos;
 109        struct etnaviv_gem_submit_bo bos[0];
 110        /* No new members here, the previous one is variable-length! */
 111};
 112
 113void etnaviv_submit_put(struct etnaviv_gem_submit * submit);
 114
 115int etnaviv_gem_wait_bo(struct etnaviv_gpu *gpu, struct drm_gem_object *obj,
 116        struct timespec *timeout);
 117int etnaviv_gem_new_private(struct drm_device *dev, size_t size, u32 flags,
 118        struct reservation_object *robj, const struct etnaviv_gem_ops *ops,
 119        struct etnaviv_gem_object **res);
 120void etnaviv_gem_obj_add(struct drm_device *dev, struct drm_gem_object *obj);
 121struct page **etnaviv_gem_get_pages(struct etnaviv_gem_object *obj);
 122void etnaviv_gem_put_pages(struct etnaviv_gem_object *obj);
 123
 124struct etnaviv_vram_mapping *etnaviv_gem_mapping_get(
 125        struct drm_gem_object *obj, struct etnaviv_gpu *gpu);
 126void etnaviv_gem_mapping_reference(struct etnaviv_vram_mapping *mapping);
 127void etnaviv_gem_mapping_unreference(struct etnaviv_vram_mapping *mapping);
 128
 129#endif /* __ETNAVIV_GEM_H__ */
 130