cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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etnaviv_gem.h (3275B)

      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
     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_context *context;
     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	struct list_head vram_list;
     51
     52	/* cache maintenance */
     53	u32 last_cpu_prep_op;
     54
     55	struct etnaviv_gem_userptr userptr;
     56};
     57
     58static inline
     59struct etnaviv_gem_object *to_etnaviv_bo(struct drm_gem_object *obj)
     60{
     61	return container_of(obj, struct etnaviv_gem_object, base);
     62}
     63
     64struct 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
     71static 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
     78struct 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 */
     89struct 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
    109void etnaviv_submit_put(struct etnaviv_gem_submit * submit);
    110
    111int etnaviv_gem_wait_bo(struct etnaviv_gpu *gpu, struct drm_gem_object *obj,
    112	struct drm_etnaviv_timespec *timeout);
    113int 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);
    115void etnaviv_gem_obj_add(struct drm_device *dev, struct drm_gem_object *obj);
    116struct page **etnaviv_gem_get_pages(struct etnaviv_gem_object *obj);
    117void etnaviv_gem_put_pages(struct etnaviv_gem_object *obj);
    118
    119struct etnaviv_vram_mapping *etnaviv_gem_mapping_get(
    120	struct drm_gem_object *obj, struct etnaviv_iommu_context *mmu_context,
    121	u64 va);
    122void etnaviv_gem_mapping_unreference(struct etnaviv_vram_mapping *mapping);
    123
    124#endif /* __ETNAVIV_GEM_H__ */