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 /* 40 * The actual size that is visible to the GPU, not necessarily 41 * PAGE_SIZE aligned, but should be aligned to GPU page size. 42 */ 43 u32 size; 44 u32 flags; 45 46 struct list_head gem_node; 47 atomic_t gpu_active; 48 49 struct page **pages; 50 struct sg_table *sgt; 51 void *vaddr; 52 53 struct list_head vram_list; 54 55 /* cache maintenance */ 56 u32 last_cpu_prep_op; 57 58 struct etnaviv_gem_userptr userptr; 59 }; 60 61 static inline 62 struct etnaviv_gem_object *to_etnaviv_bo(struct drm_gem_object *obj) 63 { 64 return container_of(obj, struct etnaviv_gem_object, base); 65 } 66 67 struct etnaviv_gem_ops { 68 int (*get_pages)(struct etnaviv_gem_object *); 69 void (*release)(struct etnaviv_gem_object *); 70 void *(*vmap)(struct etnaviv_gem_object *); 71 int (*mmap)(struct etnaviv_gem_object *, struct vm_area_struct *); 72 }; 73 74 static inline bool is_active(struct etnaviv_gem_object *etnaviv_obj) 75 { 76 return atomic_read(&etnaviv_obj->gpu_active) != 0; 77 } 78 79 #define MAX_CMDS 4 80 81 struct etnaviv_gem_submit_bo { 82 u32 flags; 83 u64 va; 84 struct etnaviv_gem_object *obj; 85 struct etnaviv_vram_mapping *mapping; 86 }; 87 88 /* Created per submit-ioctl, to track bo's and cmdstream bufs, etc, 89 * associated with the cmdstream submission for synchronization (and 90 * make it easier to unwind when things go wrong, etc). 91 */ 92 struct etnaviv_gem_submit { 93 struct drm_sched_job sched_job; 94 struct kref refcount; 95 struct etnaviv_file_private *ctx; 96 struct etnaviv_gpu *gpu; 97 struct etnaviv_iommu_context *mmu_context, *prev_mmu_context; 98 struct dma_fence *out_fence; 99 int out_fence_id; 100 struct list_head node; /* GPU active submit list */ 101 struct etnaviv_cmdbuf cmdbuf; 102 struct pid *pid; /* submitting process */ 103 u32 exec_state; 104 u32 flags; 105 unsigned int nr_pmrs; 106 struct etnaviv_perfmon_request *pmrs; 107 unsigned int nr_bos; 108 struct etnaviv_gem_submit_bo bos[]; 109 /* No new members here, the previous one is variable-length! */ 110 }; 111 112 void etnaviv_submit_put(struct etnaviv_gem_submit * submit); 113 114 int etnaviv_gem_wait_bo(struct etnaviv_gpu *gpu, struct drm_gem_object *obj, 115 struct drm_etnaviv_timespec *timeout); 116 int etnaviv_gem_new_private(struct drm_device *dev, size_t size, u32 flags, 117 const struct etnaviv_gem_ops *ops, struct etnaviv_gem_object **res); 118 void etnaviv_gem_obj_add(struct drm_device *dev, struct drm_gem_object *obj); 119 struct page **etnaviv_gem_get_pages(struct etnaviv_gem_object *obj); 120 void etnaviv_gem_put_pages(struct etnaviv_gem_object *obj); 121 122 struct etnaviv_vram_mapping *etnaviv_gem_mapping_get( 123 struct drm_gem_object *obj, struct etnaviv_iommu_context *mmu_context, 124 u64 va); 125 void etnaviv_gem_mapping_unreference(struct etnaviv_vram_mapping *mapping); 126 127 #endif /* __ETNAVIV_GEM_H__ */ 128