cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

etnaviv_drv.h (4068B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * Copyright (C) 2015-2018 Etnaviv Project
      4 */
      5
      6#ifndef __ETNAVIV_DRV_H__
      7#define __ETNAVIV_DRV_H__
      8
      9#include <linux/list.h>
     10#include <linux/mm_types.h>
     11#include <linux/sizes.h>
     12#include <linux/time64.h>
     13#include <linux/types.h>
     14
     15#include <drm/drm_fb_helper.h>
     16#include <drm/drm_gem.h>
     17#include <drm/etnaviv_drm.h>
     18#include <drm/gpu_scheduler.h>
     19
     20struct etnaviv_cmdbuf;
     21struct etnaviv_gpu;
     22struct etnaviv_mmu;
     23struct etnaviv_gem_object;
     24struct etnaviv_gem_submit;
     25struct etnaviv_iommu_global;
     26
     27#define ETNAVIV_SOFTPIN_START_ADDRESS	SZ_4M /* must be >= SUBALLOC_SIZE */
     28
     29struct etnaviv_file_private {
     30	struct etnaviv_iommu_context	*mmu;
     31	struct drm_sched_entity		sched_entity[ETNA_MAX_PIPES];
     32};
     33
     34struct etnaviv_drm_private {
     35	int num_gpus;
     36	struct etnaviv_gpu *gpu[ETNA_MAX_PIPES];
     37	gfp_t shm_gfp_mask;
     38
     39	struct etnaviv_cmdbuf_suballoc *cmdbuf_suballoc;
     40	struct etnaviv_iommu_global *mmu_global;
     41
     42	/* list of GEM objects: */
     43	struct mutex gem_lock;
     44	struct list_head gem_list;
     45};
     46
     47int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
     48		struct drm_file *file);
     49
     50int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset);
     51struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj);
     52int etnaviv_gem_prime_vmap(struct drm_gem_object *obj, struct iosys_map *map);
     53struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev,
     54	struct dma_buf_attachment *attach, struct sg_table *sg);
     55int etnaviv_gem_prime_pin(struct drm_gem_object *obj);
     56void etnaviv_gem_prime_unpin(struct drm_gem_object *obj);
     57void *etnaviv_gem_vmap(struct drm_gem_object *obj);
     58int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op,
     59		struct drm_etnaviv_timespec *timeout);
     60int etnaviv_gem_cpu_fini(struct drm_gem_object *obj);
     61void etnaviv_gem_free_object(struct drm_gem_object *obj);
     62int etnaviv_gem_new_handle(struct drm_device *dev, struct drm_file *file,
     63		u32 size, u32 flags, u32 *handle);
     64int etnaviv_gem_new_userptr(struct drm_device *dev, struct drm_file *file,
     65	uintptr_t ptr, u32 size, u32 flags, u32 *handle);
     66u16 etnaviv_buffer_init(struct etnaviv_gpu *gpu);
     67u16 etnaviv_buffer_config_mmuv2(struct etnaviv_gpu *gpu, u32 mtlb_addr, u32 safe_addr);
     68u16 etnaviv_buffer_config_pta(struct etnaviv_gpu *gpu, unsigned short id);
     69void etnaviv_buffer_end(struct etnaviv_gpu *gpu);
     70void etnaviv_sync_point_queue(struct etnaviv_gpu *gpu, unsigned int event);
     71void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, u32 exec_state,
     72	struct etnaviv_iommu_context *mmu,
     73	unsigned int event, struct etnaviv_cmdbuf *cmdbuf);
     74void etnaviv_validate_init(void);
     75bool etnaviv_cmd_validate_one(struct etnaviv_gpu *gpu,
     76	u32 *stream, unsigned int size,
     77	struct drm_etnaviv_gem_submit_reloc *relocs, unsigned int reloc_size);
     78
     79#ifdef CONFIG_DEBUG_FS
     80void etnaviv_gem_describe_objects(struct etnaviv_drm_private *priv,
     81	struct seq_file *m);
     82#endif
     83
     84#define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
     85#define VERB(fmt, ...) if (0) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
     86
     87/*
     88 * Return the storage size of a structure with a variable length array.
     89 * The array is nelem elements of elem_size, where the base structure
     90 * is defined by base.  If the size overflows size_t, return zero.
     91 */
     92static inline size_t size_vstruct(size_t nelem, size_t elem_size, size_t base)
     93{
     94	if (elem_size && nelem > (SIZE_MAX - base) / elem_size)
     95		return 0;
     96	return base + nelem * elem_size;
     97}
     98
     99/*
    100 * Etnaviv timeouts are specified wrt CLOCK_MONOTONIC, not jiffies.
    101 * We need to calculate the timeout in terms of number of jiffies
    102 * between the specified timeout and the current CLOCK_MONOTONIC time.
    103 */
    104static inline unsigned long etnaviv_timeout_to_jiffies(
    105	const struct drm_etnaviv_timespec *timeout)
    106{
    107	struct timespec64 ts, to = {
    108		.tv_sec = timeout->tv_sec,
    109		.tv_nsec = timeout->tv_nsec,
    110	};
    111
    112	ktime_get_ts64(&ts);
    113
    114	/* timeouts before "now" have already expired */
    115	if (timespec64_compare(&to, &ts) <= 0)
    116		return 0;
    117
    118	ts = timespec64_sub(to, ts);
    119
    120	return timespec64_to_jiffies(&ts);
    121}
    122
    123#endif /* __ETNAVIV_DRV_H__ */