drm/etnaviv/etnaviv_gem.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  * Copyright (C) 2015-2018 Etnaviv Project
0004  */
0005
0006 #ifndef __ETNAVIV_GEM_H__
0007 #define __ETNAVIV_GEM_H__
0008
0009 #include <linux/dma-resv.h>
0010 #include "etnaviv_cmdbuf.h"
0011 #include "etnaviv_drv.h"
0012
0013 struct dma_fence;
0014 struct etnaviv_gem_ops;
0015 struct etnaviv_gem_object;
0016
0017 struct etnaviv_gem_userptr {
0018     uintptr_t ptr;
0019     struct mm_struct *mm;
0020     bool ro;
0021 };
0022
0023 struct etnaviv_vram_mapping {
0024     struct list_head obj_node;
0025     struct list_head scan_node;
0026     struct list_head mmu_node;
0027     struct etnaviv_gem_object *object;
0028     struct etnaviv_iommu_context *context;
0029     struct drm_mm_node vram_node;
0030     unsigned int use;
0031     u32 iova;
0032 };
0033
0034 struct etnaviv_gem_object {
0035     struct drm_gem_object base;
0036     const struct etnaviv_gem_ops *ops;
0037     struct mutex lock;
0038
0039     u32 flags;
0040
0041     struct list_head gem_node;
0042     struct etnaviv_gpu *gpu;     /* non-null if active */
0043     atomic_t gpu_active;
0044     u32 access;
0045
0046     struct page **pages;
0047     struct sg_table *sgt;
0048     void *vaddr;
0049
0050     struct list_head vram_list;
0051
0052     /* cache maintenance */
0053     u32 last_cpu_prep_op;
0054
0055     struct etnaviv_gem_userptr userptr;
0056 };
0057
0058 static inline
0059 struct etnaviv_gem_object *to_etnaviv_bo(struct drm_gem_object *obj)
0060 {
0061     return container_of(obj, struct etnaviv_gem_object, base);
0062 }
0063
0064 struct etnaviv_gem_ops {
0065     int (*get_pages)(struct etnaviv_gem_object *);
0066     void (*release)(struct etnaviv_gem_object *);
0067     void *(*vmap)(struct etnaviv_gem_object *);
0068     int (*mmap)(struct etnaviv_gem_object *, struct vm_area_struct *);
0069 };
0070
0071 static inline bool is_active(struct etnaviv_gem_object *etnaviv_obj)
0072 {
0073     return atomic_read(&etnaviv_obj->gpu_active) != 0;
0074 }
0075
0076 #define MAX_CMDS 4
0077
0078 struct etnaviv_gem_submit_bo {
0079     u32 flags;
0080     u64 va;
0081     struct etnaviv_gem_object *obj;
0082     struct etnaviv_vram_mapping *mapping;
0083 };
0084
0085 /* Created per submit-ioctl, to track bo's and cmdstream bufs, etc,
0086  * associated with the cmdstream submission for synchronization (and
0087  * make it easier to unwind when things go wrong, etc).
0088  */
0089 struct etnaviv_gem_submit {
0090     struct drm_sched_job sched_job;
0091     struct kref refcount;
0092     struct etnaviv_file_private *ctx;
0093     struct etnaviv_gpu *gpu;
0094     struct etnaviv_iommu_context *mmu_context, *prev_mmu_context;
0095     struct dma_fence *out_fence;
0096     int out_fence_id;
0097     struct list_head node; /* GPU active submit list */
0098     struct etnaviv_cmdbuf cmdbuf;
0099     bool runtime_resumed;
0100     u32 exec_state;
0101     u32 flags;
0102     unsigned int nr_pmrs;
0103     struct etnaviv_perfmon_request *pmrs;
0104     unsigned int nr_bos;
0105     struct etnaviv_gem_submit_bo bos[];
0106     /* No new members here, the previous one is variable-length! */
0107 };
0108
0109 void etnaviv_submit_put(struct etnaviv_gem_submit * submit);
0110
0111 int etnaviv_gem_wait_bo(struct etnaviv_gpu *gpu, struct drm_gem_object *obj,
0112     struct drm_etnaviv_timespec *timeout);
0113 int etnaviv_gem_new_private(struct drm_device *dev, size_t size, u32 flags,
0114     const struct etnaviv_gem_ops *ops, struct etnaviv_gem_object **res);
0115 void etnaviv_gem_obj_add(struct drm_device *dev, struct drm_gem_object *obj);
0116 struct page **etnaviv_gem_get_pages(struct etnaviv_gem_object *obj);
0117 void etnaviv_gem_put_pages(struct etnaviv_gem_object *obj);
0118
0119 struct etnaviv_vram_mapping *etnaviv_gem_mapping_get(
0120     struct drm_gem_object *obj, struct etnaviv_iommu_context *mmu_context,
0121     u64 va);
0122 void etnaviv_gem_mapping_unreference(struct etnaviv_vram_mapping *mapping);
0123
0124 #endif /* __ETNAVIV_GEM_H__ */