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_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 dma_buf_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__ */
 124