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 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 47 int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, 48 struct drm_file *file); 49 50 int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset); 51 struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj); 52 int etnaviv_gem_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map); 53 struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev, 54 struct dma_buf_attachment *attach, struct sg_table *sg); 55 int etnaviv_gem_prime_pin(struct drm_gem_object *obj); 56 void etnaviv_gem_prime_unpin(struct drm_gem_object *obj); 57 void *etnaviv_gem_vmap(struct drm_gem_object *obj); 58 int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op, 59 struct drm_etnaviv_timespec *timeout); 60 int etnaviv_gem_cpu_fini(struct drm_gem_object *obj); 61 void etnaviv_gem_free_object(struct drm_gem_object *obj); 62 int etnaviv_gem_new_handle(struct drm_device *dev, struct drm_file *file, 63 u32 size, u32 flags, u32 *handle); 64 int etnaviv_gem_new_userptr(struct drm_device *dev, struct drm_file *file, 65 uintptr_t ptr, u32 size, u32 flags, u32 *handle); 66 u16 etnaviv_buffer_init(struct etnaviv_gpu *gpu); 67 u16 etnaviv_buffer_config_mmuv2(struct etnaviv_gpu *gpu, u32 mtlb_addr, u32 safe_addr); 68 u16 etnaviv_buffer_config_pta(struct etnaviv_gpu *gpu, unsigned short id); 69 void etnaviv_buffer_end(struct etnaviv_gpu *gpu); 70 void etnaviv_sync_point_queue(struct etnaviv_gpu *gpu, unsigned int event); 71 void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, u32 exec_state, 72 struct etnaviv_iommu_context *mmu, 73 unsigned int event, struct etnaviv_cmdbuf *cmdbuf); 74 void etnaviv_validate_init(void); 75 bool 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 80 void 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 */ 92 static 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 */ 104 static 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