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 device_dma_parameters dma_parms;
 37	struct etnaviv_gpu *gpu[ETNA_MAX_PIPES];
 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);
 51vm_fault_t etnaviv_gem_fault(struct vm_fault *vmf);
 52int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset);
 53struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj);
 54void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj);
 55void etnaviv_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
 56int etnaviv_gem_prime_mmap(struct drm_gem_object *obj,
 57			   struct vm_area_struct *vma);
 58struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev,
 59	struct dma_buf_attachment *attach, struct sg_table *sg);
 60int etnaviv_gem_prime_pin(struct drm_gem_object *obj);
 61void etnaviv_gem_prime_unpin(struct drm_gem_object *obj);
 62void *etnaviv_gem_vmap(struct drm_gem_object *obj);
 63int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op,
 64		struct timespec *timeout);
 65int etnaviv_gem_cpu_fini(struct drm_gem_object *obj);
 66void etnaviv_gem_free_object(struct drm_gem_object *obj);
 67int etnaviv_gem_new_handle(struct drm_device *dev, struct drm_file *file,
 68		u32 size, u32 flags, u32 *handle);
 69int etnaviv_gem_new_userptr(struct drm_device *dev, struct drm_file *file,
 70	uintptr_t ptr, u32 size, u32 flags, u32 *handle);
 71u16 etnaviv_buffer_init(struct etnaviv_gpu *gpu);
 72u16 etnaviv_buffer_config_mmuv2(struct etnaviv_gpu *gpu, u32 mtlb_addr, u32 safe_addr);
 73u16 etnaviv_buffer_config_pta(struct etnaviv_gpu *gpu, unsigned short id);
 74void etnaviv_buffer_end(struct etnaviv_gpu *gpu);
 75void etnaviv_sync_point_queue(struct etnaviv_gpu *gpu, unsigned int event);
 76void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, u32 exec_state,
 77	struct etnaviv_iommu_context *mmu,
 78	unsigned int event, struct etnaviv_cmdbuf *cmdbuf);
 79void etnaviv_validate_init(void);
 80bool etnaviv_cmd_validate_one(struct etnaviv_gpu *gpu,
 81	u32 *stream, unsigned int size,
 82	struct drm_etnaviv_gem_submit_reloc *relocs, unsigned int reloc_size);
 83
 84#ifdef CONFIG_DEBUG_FS
 85void etnaviv_gem_describe_objects(struct etnaviv_drm_private *priv,
 86	struct seq_file *m);
 87#endif
 88
 89#define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
 90#define VERB(fmt, ...) if (0) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
 91
 92/*
 93 * Return the storage size of a structure with a variable length array.
 94 * The array is nelem elements of elem_size, where the base structure
 95 * is defined by base.  If the size overflows size_t, return zero.
 96 */
 97static inline size_t size_vstruct(size_t nelem, size_t elem_size, size_t base)
 98{
 99	if (elem_size && nelem > (SIZE_MAX - base) / elem_size)
100		return 0;
101	return base + nelem * elem_size;
102}
103
104/*
105 * Etnaviv timeouts are specified wrt CLOCK_MONOTONIC, not jiffies.
106 * We need to calculate the timeout in terms of number of jiffies
107 * between the specified timeout and the current CLOCK_MONOTONIC time.
108 */
109static inline unsigned long etnaviv_timeout_to_jiffies(
110	const struct timespec *timeout)
111{
112	struct timespec64 ts, to;
113
114	to = timespec_to_timespec64(*timeout);
115
116	ktime_get_ts64(&ts);
117
118	/* timeouts before "now" have already expired */
119	if (timespec64_compare(&to, &ts) <= 0)
120		return 0;
121
122	ts = timespec64_sub(to, ts);
123
124	return timespec64_to_jiffies(&ts);
125}
126
127#endif /* __ETNAVIV_DRV_H__ */