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/kernel.h> 10 #include <linux/clk.h> 11 #include <linux/cpufreq.h> 12 #include <linux/module.h> 13 #include <linux/platform_device.h> 14 #include <linux/pm.h> 15 #include <linux/pm_runtime.h> 16 #include <linux/slab.h> 17 #include <linux/list.h> 18 #include <linux/time64.h> 19 #include <linux/types.h> 20 #include <linux/sizes.h> 21 #include <linux/mm_types.h> 22 23 #include <drm/drmP.h> 24 #include <drm/drm_fb_helper.h> 25 #include <drm/drm_gem.h> 26 #include <drm/etnaviv_drm.h> 27 #include <drm/gpu_scheduler.h> 28 29 struct etnaviv_cmdbuf; 30 struct etnaviv_gpu; 31 struct etnaviv_mmu; 32 struct etnaviv_gem_object; 33 struct etnaviv_gem_submit; 34 35 struct etnaviv_file_private { 36 /* 37 * When per-context address spaces are supported we'd keep track of 38 * the context's page-tables here. 39 */ 40 struct drm_sched_entity sched_entity[ETNA_MAX_PIPES]; 41 }; 42 43 struct etnaviv_drm_private { 44 int num_gpus; 45 struct etnaviv_gpu *gpu[ETNA_MAX_PIPES]; 46 47 /* list of GEM objects: */ 48 struct mutex gem_lock; 49 struct list_head gem_list; 50 }; 51 52 int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, 53 struct drm_file *file); 54 55 int etnaviv_gem_mmap(struct file *filp, struct vm_area_struct *vma); 56 vm_fault_t etnaviv_gem_fault(struct vm_fault *vmf); 57 int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset); 58 struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj); 59 void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj); 60 void etnaviv_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr); 61 int etnaviv_gem_prime_mmap(struct drm_gem_object *obj, 62 struct vm_area_struct *vma); 63 struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev, 64 struct dma_buf_attachment *attach, struct sg_table *sg); 65 int etnaviv_gem_prime_pin(struct drm_gem_object *obj); 66 void etnaviv_gem_prime_unpin(struct drm_gem_object *obj); 67 void *etnaviv_gem_vmap(struct drm_gem_object *obj); 68 int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op, 69 struct timespec *timeout); 70 int etnaviv_gem_cpu_fini(struct drm_gem_object *obj); 71 void etnaviv_gem_free_object(struct drm_gem_object *obj); 72 int etnaviv_gem_new_handle(struct drm_device *dev, struct drm_file *file, 73 u32 size, u32 flags, u32 *handle); 74 int etnaviv_gem_new_userptr(struct drm_device *dev, struct drm_file *file, 75 uintptr_t ptr, u32 size, u32 flags, u32 *handle); 76 u16 etnaviv_buffer_init(struct etnaviv_gpu *gpu); 77 u16 etnaviv_buffer_config_mmuv2(struct etnaviv_gpu *gpu, u32 mtlb_addr, u32 safe_addr); 78 u16 etnaviv_buffer_config_pta(struct etnaviv_gpu *gpu); 79 void etnaviv_buffer_end(struct etnaviv_gpu *gpu); 80 void etnaviv_sync_point_queue(struct etnaviv_gpu *gpu, unsigned int event); 81 void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, u32 exec_state, 82 unsigned int event, struct etnaviv_cmdbuf *cmdbuf); 83 void etnaviv_validate_init(void); 84 bool etnaviv_cmd_validate_one(struct etnaviv_gpu *gpu, 85 u32 *stream, unsigned int size, 86 struct drm_etnaviv_gem_submit_reloc *relocs, unsigned int reloc_size); 87 88 #ifdef CONFIG_DEBUG_FS 89 void etnaviv_gem_describe_objects(struct etnaviv_drm_private *priv, 90 struct seq_file *m); 91 #endif 92 93 #define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__) 94 #define VERB(fmt, ...) if (0) DRM_DEBUG(fmt"\n", ##__VA_ARGS__) 95 96 /* 97 * Return the storage size of a structure with a variable length array. 98 * The array is nelem elements of elem_size, where the base structure 99 * is defined by base. If the size overflows size_t, return zero. 100 */ 101 static inline size_t size_vstruct(size_t nelem, size_t elem_size, size_t base) 102 { 103 if (elem_size && nelem > (SIZE_MAX - base) / elem_size) 104 return 0; 105 return base + nelem * elem_size; 106 } 107 108 /* 109 * Etnaviv timeouts are specified wrt CLOCK_MONOTONIC, not jiffies. 110 * We need to calculate the timeout in terms of number of jiffies 111 * between the specified timeout and the current CLOCK_MONOTONIC time. 112 */ 113 static inline unsigned long etnaviv_timeout_to_jiffies( 114 const struct timespec *timeout) 115 { 116 struct timespec64 ts, to; 117 118 to = timespec_to_timespec64(*timeout); 119 120 ktime_get_ts64(&ts); 121 122 /* timeouts before "now" have already expired */ 123 if (timespec64_compare(&to, &ts) <= 0) 124 return 0; 125 126 ts = timespec64_sub(to, ts); 127 128 return timespec64_to_jiffies(&ts); 129 } 130 131 #endif /* __ETNAVIV_DRV_H__ */ 132