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
20 struct etnaviv_cmdbuf;
21 struct etnaviv_gpu;
22 struct etnaviv_mmu;
23 struct etnaviv_gem_object;
24 struct etnaviv_gem_submit;
25 struct etnaviv_iommu_global;
26
27 #define ETNAVIV_SOFTPIN_START_ADDRESS SZ_4M /* must be >= SUBALLOC_SIZE */
28
29 struct etnaviv_file_private {
30 struct etnaviv_iommu_context *mmu;
31 struct drm_sched_entity sched_entity[ETNA_MAX_PIPES];
32 };
33
34 struct 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
47 int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
48 struct drm_file *file);
49
50 int etnaviv_gem_mmap(struct file *filp, struct vm_area_struct *vma);
51 vm_fault_t etnaviv_gem_fault(struct vm_fault *vmf);
52 int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset);
53 struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj);
54 void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj);
55 void etnaviv_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
56 int etnaviv_gem_prime_mmap(struct drm_gem_object *obj,
57 struct vm_area_struct *vma);
58 struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev,
59 struct dma_buf_attachment *attach, struct sg_table *sg);
60 int etnaviv_gem_prime_pin(struct drm_gem_object *obj);
61 void etnaviv_gem_prime_unpin(struct drm_gem_object *obj);
62 void *etnaviv_gem_vmap(struct drm_gem_object *obj);
63 int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op,
64 struct timespec *timeout);
65 int etnaviv_gem_cpu_fini(struct drm_gem_object *obj);
66 void etnaviv_gem_free_object(struct drm_gem_object *obj);
67 int etnaviv_gem_new_handle(struct drm_device *dev, struct drm_file *file,
68 u32 size, u32 flags, u32 *handle);
69 int etnaviv_gem_new_userptr(struct drm_device *dev, struct drm_file *file,
70 uintptr_t ptr, u32 size, u32 flags, u32 *handle);
71 u16 etnaviv_buffer_init(struct etnaviv_gpu *gpu);
72 u16 etnaviv_buffer_config_mmuv2(struct etnaviv_gpu *gpu, u32 mtlb_addr, u32 safe_addr);
73 u16 etnaviv_buffer_config_pta(struct etnaviv_gpu *gpu, unsigned short id);
74 void etnaviv_buffer_end(struct etnaviv_gpu *gpu);
75 void etnaviv_sync_point_queue(struct etnaviv_gpu *gpu, unsigned int event);
76 void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, u32 exec_state,
77 struct etnaviv_iommu_context *mmu,
78 unsigned int event, struct etnaviv_cmdbuf *cmdbuf);
79 void etnaviv_validate_init(void);
80 bool 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
85 void 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 */
size_vstruct(size_t nelem,size_t elem_size,size_t base)97 static 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 */
etnaviv_timeout_to_jiffies(const struct timespec * timeout)109 static 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__ */
128
