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 16 #include <drm/drm_drv.h> 17 #include <drm/drm_gem.h> 18 #include <drm/etnaviv_drm.h> 19 #include <drm/gpu_scheduler.h> 20 21 struct etnaviv_cmdbuf; 22 struct etnaviv_gpu; 23 struct etnaviv_mmu; 24 struct etnaviv_gem_object; 25 struct etnaviv_gem_submit; 26 struct etnaviv_iommu_global; 27 28 #define ETNAVIV_SOFTPIN_START_ADDRESS SZ_4M /* must be >= SUBALLOC_SIZE */ 29 30 struct etnaviv_file_private { 31 struct etnaviv_iommu_context *mmu; 32 struct drm_sched_entity sched_entity[ETNA_MAX_PIPES]; 33 }; 34 35 struct etnaviv_drm_private { 36 int num_gpus; 37 struct etnaviv_gpu *gpu[ETNA_MAX_PIPES]; 38 gfp_t shm_gfp_mask; 39 40 struct etnaviv_cmdbuf_suballoc *cmdbuf_suballoc; 41 struct etnaviv_iommu_global *mmu_global; 42 43 /* list of GEM objects: */ 44 struct mutex gem_lock; 45 struct list_head gem_list; 46 }; 47 48 int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, 49 struct drm_file *file); 50 51 int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset); 52 struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj); 53 int etnaviv_gem_prime_vmap(struct drm_gem_object *obj, struct iosys_map *map); 54 struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev, 55 struct dma_buf_attachment *attach, struct sg_table *sg); 56 int etnaviv_gem_prime_pin(struct drm_gem_object *obj); 57 void etnaviv_gem_prime_unpin(struct drm_gem_object *obj); 58 void *etnaviv_gem_vmap(struct drm_gem_object *obj); 59 int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op, 60 struct drm_etnaviv_timespec *timeout); 61 int etnaviv_gem_cpu_fini(struct drm_gem_object *obj); 62 void etnaviv_gem_free_object(struct drm_gem_object *obj); 63 int etnaviv_gem_new_handle(struct drm_device *dev, struct drm_file *file, 64 u32 size, u32 flags, u32 *handle); 65 int etnaviv_gem_new_userptr(struct drm_device *dev, struct drm_file *file, 66 uintptr_t ptr, u32 size, u32 flags, u32 *handle); 67 u16 etnaviv_buffer_init(struct etnaviv_gpu *gpu); 68 u16 etnaviv_buffer_config_mmuv2(struct etnaviv_gpu *gpu, u32 mtlb_addr, u32 safe_addr); 69 u16 etnaviv_buffer_config_pta(struct etnaviv_gpu *gpu, unsigned short id); 70 void etnaviv_buffer_end(struct etnaviv_gpu *gpu); 71 void etnaviv_sync_point_queue(struct etnaviv_gpu *gpu, unsigned int event); 72 void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, u32 exec_state, 73 struct etnaviv_iommu_context *mmu, 74 unsigned int event, struct etnaviv_cmdbuf *cmdbuf); 75 void etnaviv_validate_init(void); 76 bool etnaviv_cmd_validate_one(struct etnaviv_gpu *gpu, 77 u32 *stream, unsigned int size, 78 struct drm_etnaviv_gem_submit_reloc *relocs, unsigned int reloc_size); 79 80 #ifdef CONFIG_DEBUG_FS 81 void etnaviv_gem_describe_objects(struct etnaviv_drm_private *priv, 82 struct seq_file *m); 83 #endif 84 85 #define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__) 86 #define VERB(fmt, ...) if (0) DRM_DEBUG(fmt"\n", ##__VA_ARGS__) 87 88 /* 89 * Return the storage size of a structure with a variable length array. 90 * The array is nelem elements of elem_size, where the base structure 91 * is defined by base. If the size overflows size_t, return zero. 92 */ 93 static inline size_t size_vstruct(size_t nelem, size_t elem_size, size_t base) 94 { 95 if (elem_size && nelem > (SIZE_MAX - base) / elem_size) 96 return 0; 97 return base + nelem * elem_size; 98 } 99 100 /* 101 * Etnaviv timeouts are specified wrt CLOCK_MONOTONIC, not jiffies. 102 * We need to calculate the timeout in terms of number of jiffies 103 * between the specified timeout and the current CLOCK_MONOTONIC time. 104 */ 105 static inline unsigned long etnaviv_timeout_to_jiffies( 106 const struct drm_etnaviv_timespec *timeout) 107 { 108 struct timespec64 ts, to = { 109 .tv_sec = timeout->tv_sec, 110 .tv_nsec = timeout->tv_nsec, 111 }; 112 113 ktime_get_ts64(&ts); 114 115 /* timeouts before "now" have already expired */ 116 if (timespec64_compare(&to, &ts) <= 0) 117 return 0; 118 119 ts = timespec64_sub(to, ts); 120 121 return timespec64_to_jiffies(&ts); 122 } 123 124 #endif /* __ETNAVIV_DRV_H__ */ 125