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/dma-resv.h> 10 #include "etnaviv_cmdbuf.h" 11 #include "etnaviv_drv.h" 12 13 struct dma_fence; 14 struct etnaviv_gem_ops; 15 struct etnaviv_gem_object; 16 17 struct etnaviv_gem_userptr { 18 uintptr_t ptr; 19 struct mm_struct *mm; 20 bool ro; 21 }; 22 23 struct 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_context *context; 29 struct drm_mm_node vram_node; 30 unsigned int use; 31 u32 iova; 32 }; 33 34 struct 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 struct list_head vram_list; 51 52 /* cache maintenance */ 53 u32 last_cpu_prep_op; 54 55 struct etnaviv_gem_userptr userptr; 56 }; 57 58 static inline 59 struct etnaviv_gem_object *to_etnaviv_bo(struct drm_gem_object *obj) 60 { 61 return container_of(obj, struct etnaviv_gem_object, base); 62 } 63 64 struct etnaviv_gem_ops { 65 int (*get_pages)(struct etnaviv_gem_object *); 66 void (*release)(struct etnaviv_gem_object *); 67 void *(*vmap)(struct etnaviv_gem_object *); 68 int (*mmap)(struct etnaviv_gem_object *, struct vm_area_struct *); 69 }; 70 71 static inline bool is_active(struct etnaviv_gem_object *etnaviv_obj) 72 { 73 return atomic_read(&etnaviv_obj->gpu_active) != 0; 74 } 75 76 #define MAX_CMDS 4 77 78 struct etnaviv_gem_submit_bo { 79 u32 flags; 80 u64 va; 81 struct etnaviv_gem_object *obj; 82 struct etnaviv_vram_mapping *mapping; 83 }; 84 85 /* Created per submit-ioctl, to track bo's and cmdstream bufs, etc, 86 * associated with the cmdstream submission for synchronization (and 87 * make it easier to unwind when things go wrong, etc). 88 */ 89 struct etnaviv_gem_submit { 90 struct drm_sched_job sched_job; 91 struct kref refcount; 92 struct etnaviv_file_private *ctx; 93 struct etnaviv_gpu *gpu; 94 struct etnaviv_iommu_context *mmu_context, *prev_mmu_context; 95 struct dma_fence *out_fence; 96 int out_fence_id; 97 struct list_head node; /* GPU active submit list */ 98 struct etnaviv_cmdbuf cmdbuf; 99 bool runtime_resumed; 100 u32 exec_state; 101 u32 flags; 102 unsigned int nr_pmrs; 103 struct etnaviv_perfmon_request *pmrs; 104 unsigned int nr_bos; 105 struct etnaviv_gem_submit_bo bos[]; 106 /* No new members here, the previous one is variable-length! */ 107 }; 108 109 void etnaviv_submit_put(struct etnaviv_gem_submit * submit); 110 111 int etnaviv_gem_wait_bo(struct etnaviv_gpu *gpu, struct drm_gem_object *obj, 112 struct drm_etnaviv_timespec *timeout); 113 int etnaviv_gem_new_private(struct drm_device *dev, size_t size, u32 flags, 114 const struct etnaviv_gem_ops *ops, struct etnaviv_gem_object **res); 115 void etnaviv_gem_obj_add(struct drm_device *dev, struct drm_gem_object *obj); 116 struct page **etnaviv_gem_get_pages(struct etnaviv_gem_object *obj); 117 void etnaviv_gem_put_pages(struct etnaviv_gem_object *obj); 118 119 struct etnaviv_vram_mapping *etnaviv_gem_mapping_get( 120 struct drm_gem_object *obj, struct etnaviv_iommu_context *mmu_context, 121 u64 va); 122 void etnaviv_gem_mapping_unreference(struct etnaviv_vram_mapping *mapping); 123 124 #endif /* __ETNAVIV_GEM_H__ */ 125