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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * Copyright (C) 2015-2018 Etnaviv Project4 */5 6#ifndef __ETNAVIV_DRV_H__7#define __ETNAVIV_DRV_H__8 9#include <linux/io.h>10#include <linux/list.h>11#include <linux/mm_types.h>12#include <linux/sizes.h>13#include <linux/time64.h>14#include <linux/types.h>15#include <linux/xarray.h>16 17#include <drm/drm_drv.h>18#include <drm/drm_gem.h>19#include <drm/etnaviv_drm.h>20#include <drm/gpu_scheduler.h>21 22struct etnaviv_cmdbuf;23struct etnaviv_gpu;24struct etnaviv_mmu;25struct etnaviv_gem_object;26struct etnaviv_gem_submit;27struct etnaviv_iommu_global;28 29#define ETNAVIV_SOFTPIN_START_ADDRESS SZ_4M /* must be >= SUBALLOC_SIZE */30 31struct etnaviv_file_private {32 int id;33 struct etnaviv_iommu_context *mmu;34 struct drm_sched_entity sched_entity[ETNA_MAX_PIPES];35};36 37struct etnaviv_drm_private {38 int num_gpus;39 struct etnaviv_gpu *gpu[ETNA_MAX_PIPES];40 gfp_t shm_gfp_mask;41 42 struct etnaviv_cmdbuf_suballoc *cmdbuf_suballoc;43 struct etnaviv_iommu_global *mmu_global;44 45 struct xarray active_contexts;46 u32 next_context_id;47 48 /* list of GEM objects: */49 struct mutex gem_lock;50 struct list_head gem_list;51};52 53int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,54 struct drm_file *file);55 56int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset);57struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj);58int etnaviv_gem_prime_vmap(struct drm_gem_object *obj, struct iosys_map *map);59struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev,60 struct dma_buf_attachment *attach, struct sg_table *sg);61int etnaviv_gem_prime_pin(struct drm_gem_object *obj);62void etnaviv_gem_prime_unpin(struct drm_gem_object *obj);63void *etnaviv_gem_vmap(struct drm_gem_object *obj);64int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op,65 struct drm_etnaviv_timespec *timeout);66int etnaviv_gem_cpu_fini(struct drm_gem_object *obj);67void etnaviv_gem_free_object(struct drm_gem_object *obj);68int etnaviv_gem_new_handle(struct drm_device *dev, struct drm_file *file,69 u32 size, u32 flags, u32 *handle);70int etnaviv_gem_new_userptr(struct drm_device *dev, struct drm_file *file,71 uintptr_t ptr, u32 size, u32 flags, u32 *handle);72u16 etnaviv_buffer_init(struct etnaviv_gpu *gpu);73u16 etnaviv_buffer_config_mmuv2(struct etnaviv_gpu *gpu, u32 mtlb_addr, u32 safe_addr);74u16 etnaviv_buffer_config_pta(struct etnaviv_gpu *gpu, unsigned short id);75void etnaviv_buffer_end(struct etnaviv_gpu *gpu);76void etnaviv_sync_point_queue(struct etnaviv_gpu *gpu, unsigned int event);77void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, u32 exec_state,78 struct etnaviv_iommu_context *mmu,79 unsigned int event, struct etnaviv_cmdbuf *cmdbuf);80void etnaviv_validate_init(void);81bool etnaviv_cmd_validate_one(struct etnaviv_gpu *gpu,82 u32 *stream, unsigned int size,83 struct drm_etnaviv_gem_submit_reloc *relocs, unsigned int reloc_size);84 85#ifdef CONFIG_DEBUG_FS86void etnaviv_gem_describe_objects(struct etnaviv_drm_private *priv,87 struct seq_file *m);88#endif89 90#define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)91#define VERB(fmt, ...) if (0) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)92 93/*94 * Return the storage size of a structure with a variable length array.95 * The array is nelem elements of elem_size, where the base structure96 * is defined by base. If the size overflows size_t, return zero.97 */98static inline size_t size_vstruct(size_t nelem, size_t elem_size, size_t base)99{100 if (elem_size && nelem > (SIZE_MAX - base) / elem_size)101 return 0;102 return base + nelem * elem_size;103}104 105/*106 * Etnaviv timeouts are specified wrt CLOCK_MONOTONIC, not jiffies.107 * We need to calculate the timeout in terms of number of jiffies108 * between the specified timeout and the current CLOCK_MONOTONIC time.109 */110static inline unsigned long etnaviv_timeout_to_jiffies(111 const struct drm_etnaviv_timespec *timeout)112{113 struct timespec64 ts, to = {114 .tv_sec = timeout->tv_sec,115 .tv_nsec = timeout->tv_nsec,116 };117 118 ktime_get_ts64(&ts);119 120 /* timeouts before "now" have already expired */121 if (timespec64_compare(&to, &ts) <= 0)122 return 0;123 124 ts = timespec64_sub(to, ts);125 126 return timespec64_to_jiffies(&ts);127}128 129#endif /* __ETNAVIV_DRV_H__ */130