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_crtc_helper.h> 25 #include <drm/drm_fb_helper.h> 26 #include <drm/drm_gem.h> 27 #include <drm/etnaviv_drm.h> 28 #include <drm/gpu_scheduler.h> 29 30 struct etnaviv_cmdbuf; 31 struct etnaviv_gpu; 32 struct etnaviv_mmu; 33 struct etnaviv_gem_object; 34 struct etnaviv_gem_submit; 35 36 struct etnaviv_file_private { 37 /* 38 * When per-context address spaces are supported we'd keep track of 39 * the context's page-tables here. 40 */ 41 struct drm_sched_entity sched_entity[ETNA_MAX_PIPES]; 42 }; 43 44 struct etnaviv_drm_private { 45 int num_gpus; 46 struct etnaviv_gpu *gpu[ETNA_MAX_PIPES]; 47 48 /* list of GEM objects: */ 49 struct mutex gem_lock; 50 struct list_head gem_list; 51 }; 52 53 int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, 54 struct drm_file *file); 55 56 int etnaviv_gem_mmap(struct file *filp, struct vm_area_struct *vma); 57 vm_fault_t etnaviv_gem_fault(struct vm_fault *vmf); 58 int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset); 59 struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj); 60 void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj); 61 void etnaviv_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr); 62 int etnaviv_gem_prime_mmap(struct drm_gem_object *obj, 63 struct vm_area_struct *vma); 64 struct reservation_object *etnaviv_gem_prime_res_obj(struct drm_gem_object *obj); 65 struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev, 66 struct dma_buf_attachment *attach, struct sg_table *sg); 67 int etnaviv_gem_prime_pin(struct drm_gem_object *obj); 68 void etnaviv_gem_prime_unpin(struct drm_gem_object *obj); 69 void *etnaviv_gem_vmap(struct drm_gem_object *obj); 70 int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op, 71 struct timespec *timeout); 72 int etnaviv_gem_cpu_fini(struct drm_gem_object *obj); 73 void etnaviv_gem_free_object(struct drm_gem_object *obj); 74 int etnaviv_gem_new_handle(struct drm_device *dev, struct drm_file *file, 75 u32 size, u32 flags, u32 *handle); 76 int etnaviv_gem_new_userptr(struct drm_device *dev, struct drm_file *file, 77 uintptr_t ptr, u32 size, u32 flags, u32 *handle); 78 u16 etnaviv_buffer_init(struct etnaviv_gpu *gpu); 79 u16 etnaviv_buffer_config_mmuv2(struct etnaviv_gpu *gpu, u32 mtlb_addr, u32 safe_addr); 80 u16 etnaviv_buffer_config_pta(struct etnaviv_gpu *gpu); 81 void etnaviv_buffer_end(struct etnaviv_gpu *gpu); 82 void etnaviv_sync_point_queue(struct etnaviv_gpu *gpu, unsigned int event); 83 void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, u32 exec_state, 84 unsigned int event, struct etnaviv_cmdbuf *cmdbuf); 85 void etnaviv_validate_init(void); 86 bool etnaviv_cmd_validate_one(struct etnaviv_gpu *gpu, 87 u32 *stream, unsigned int size, 88 struct drm_etnaviv_gem_submit_reloc *relocs, unsigned int reloc_size); 89 90 #ifdef CONFIG_DEBUG_FS 91 void etnaviv_gem_describe_objects(struct etnaviv_drm_private *priv, 92 struct seq_file *m); 93 #endif 94 95 #define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__) 96 #define VERB(fmt, ...) if (0) DRM_DEBUG(fmt"\n", ##__VA_ARGS__) 97 98 /* 99 * Return the storage size of a structure with a variable length array. 100 * The array is nelem elements of elem_size, where the base structure 101 * is defined by base. If the size overflows size_t, return zero. 102 */ 103 static inline size_t size_vstruct(size_t nelem, size_t elem_size, size_t base) 104 { 105 if (elem_size && nelem > (SIZE_MAX - base) / elem_size) 106 return 0; 107 return base + nelem * elem_size; 108 } 109 110 /* 111 * Etnaviv timeouts are specified wrt CLOCK_MONOTONIC, not jiffies. 112 * We need to calculate the timeout in terms of number of jiffies 113 * between the specified timeout and the current CLOCK_MONOTONIC time. 114 */ 115 static inline unsigned long etnaviv_timeout_to_jiffies( 116 const struct timespec *timeout) 117 { 118 struct timespec64 ts, to; 119 120 to = timespec_to_timespec64(*timeout); 121 122 ktime_get_ts64(&ts); 123 124 /* timeouts before "now" have already expired */ 125 if (timespec64_compare(&to, &ts) <= 0) 126 return 0; 127 128 ts = timespec64_sub(to, ts); 129 130 return timespec64_to_jiffies(&ts); 131 } 132 133 #endif /* __ETNAVIV_DRV_H__ */ 134