LXR linux/drivers/gpu/drm/etnaviv/etnaviv

   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(struct file *filp, struct vm_area_struct *vma);
  51int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset);
  52struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj);
  53int etnaviv_gem_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map);
  54int etnaviv_gem_prime_mmap(struct drm_gem_object *obj,
  55                           struct vm_area_struct *vma);
  56struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev,
  57        struct dma_buf_attachment *attach, struct sg_table *sg);
  58int etnaviv_gem_prime_pin(struct drm_gem_object *obj);
  59void etnaviv_gem_prime_unpin(struct drm_gem_object *obj);
  60void *etnaviv_gem_vmap(struct drm_gem_object *obj);
  61int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op,
  62                struct drm_etnaviv_timespec *timeout);
  63int etnaviv_gem_cpu_fini(struct drm_gem_object *obj);
  64void etnaviv_gem_free_object(struct drm_gem_object *obj);
  65int etnaviv_gem_new_handle(struct drm_device *dev, struct drm_file *file,
  66                u32 size, u32 flags, u32 *handle);
  67int etnaviv_gem_new_userptr(struct drm_device *dev, struct drm_file *file,
  68        uintptr_t ptr, u32 size, u32 flags, u32 *handle);
  69u16 etnaviv_buffer_init(struct etnaviv_gpu *gpu);
  70u16 etnaviv_buffer_config_mmuv2(struct etnaviv_gpu *gpu, u32 mtlb_addr, u32 safe_addr);
  71u16 etnaviv_buffer_config_pta(struct etnaviv_gpu *gpu, unsigned short id);
  72void etnaviv_buffer_end(struct etnaviv_gpu *gpu);
  73void etnaviv_sync_point_queue(struct etnaviv_gpu *gpu, unsigned int event);
  74void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, u32 exec_state,
  75        struct etnaviv_iommu_context *mmu,
  76        unsigned int event, struct etnaviv_cmdbuf *cmdbuf);
  77void etnaviv_validate_init(void);
  78bool etnaviv_cmd_validate_one(struct etnaviv_gpu *gpu,
  79        u32 *stream, unsigned int size,
  80        struct drm_etnaviv_gem_submit_reloc *relocs, unsigned int reloc_size);
  81
  82#ifdef CONFIG_DEBUG_FS
  83void etnaviv_gem_describe_objects(struct etnaviv_drm_private *priv,
  84        struct seq_file *m);
  85#endif
  86
  87#define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
  88#define VERB(fmt, ...) if (0) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
  89
  90/*
  91 * Return the storage size of a structure with a variable length array.
  92 * The array is nelem elements of elem_size, where the base structure
  93 * is defined by base.  If the size overflows size_t, return zero.
  94 */
  95static inline size_t size_vstruct(size_t nelem, size_t elem_size, size_t base)
  96{
  97        if (elem_size && nelem > (SIZE_MAX - base) / elem_size)
  98                return 0;
  99        return base + nelem * elem_size;
 100}
 101
 102/*
 103 * Etnaviv timeouts are specified wrt CLOCK_MONOTONIC, not jiffies.
 104 * We need to calculate the timeout in terms of number of jiffies
 105 * between the specified timeout and the current CLOCK_MONOTONIC time.
 106 */
 107static inline unsigned long etnaviv_timeout_to_jiffies(
 108        const struct drm_etnaviv_timespec *timeout)
 109{
 110        struct timespec64 ts, to = {
 111                .tv_sec = timeout->tv_sec,
 112                .tv_nsec = timeout->tv_nsec,
 113        };
 114
 115        ktime_get_ts64(&ts);
 116
 117        /* timeouts before "now" have already expired */
 118        if (timespec64_compare(&to, &ts) <= 0)
 119                return 0;
 120
 121        ts = timespec64_sub(to, ts);
 122
 123        return timespec64_to_jiffies(&ts);
 124}
 125
 126#endif /* __ETNAVIV_DRV_H__ */
 127