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/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_FS
86void etnaviv_gem_describe_objects(struct etnaviv_drm_private *priv,
87 struct seq_file *m);
88#endif
89
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 structure
96 * 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 jiffies
108 * 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: &ts);
119
120 /* timeouts before "now" have already expired */
121 if (timespec64_compare(lhs: &to, rhs: &ts) <= 0)
122 return 0;
123
124 ts = timespec64_sub(lhs: to, rhs: ts);
125
126 return timespec64_to_jiffies(value: &ts);
127}
128
129#endif /* __ETNAVIV_DRV_H__ */
130

source code of linux/drivers/gpu/drm/etnaviv/etnaviv_drv.h