1 /* 2 * Copyright (C) 2015 Etnaviv Project 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 as published by 6 * the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 11 * more details. 12 * 13 * You should have received a copy of the GNU General Public License along with 14 * this program. If not, see <http://www.gnu.org/licenses/>. 15 */ 16 17 #ifndef __ETNAVIV_DRV_H__ 18 #define __ETNAVIV_DRV_H__ 19 20 #include <linux/kernel.h> 21 #include <linux/clk.h> 22 #include <linux/cpufreq.h> 23 #include <linux/module.h> 24 #include <linux/platform_device.h> 25 #include <linux/pm.h> 26 #include <linux/pm_runtime.h> 27 #include <linux/slab.h> 28 #include <linux/list.h> 29 #include <linux/types.h> 30 #include <linux/sizes.h> 31 32 #include <drm/drmP.h> 33 #include <drm/drm_crtc_helper.h> 34 #include <drm/drm_fb_helper.h> 35 #include <drm/drm_gem.h> 36 #include <drm/etnaviv_drm.h> 37 #include <drm/gpu_scheduler.h> 38 39 struct etnaviv_cmdbuf; 40 struct etnaviv_gpu; 41 struct etnaviv_mmu; 42 struct etnaviv_gem_object; 43 struct etnaviv_gem_submit; 44 45 struct etnaviv_file_private { 46 /* 47 * When per-context address spaces are supported we'd keep track of 48 * the context's page-tables here. 49 */ 50 struct drm_sched_entity sched_entity[ETNA_MAX_PIPES]; 51 }; 52 53 struct etnaviv_drm_private { 54 int num_gpus; 55 struct etnaviv_gpu *gpu[ETNA_MAX_PIPES]; 56 57 /* list of GEM objects: */ 58 struct mutex gem_lock; 59 struct list_head gem_list; 60 }; 61 62 int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, 63 struct drm_file *file); 64 65 int etnaviv_gem_mmap(struct file *filp, struct vm_area_struct *vma); 66 int etnaviv_gem_fault(struct vm_fault *vmf); 67 int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset); 68 struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj); 69 void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj); 70 void etnaviv_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr); 71 int etnaviv_gem_prime_mmap(struct drm_gem_object *obj, 72 struct vm_area_struct *vma); 73 struct reservation_object *etnaviv_gem_prime_res_obj(struct drm_gem_object *obj); 74 struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev, 75 struct dma_buf_attachment *attach, struct sg_table *sg); 76 int etnaviv_gem_prime_pin(struct drm_gem_object *obj); 77 void etnaviv_gem_prime_unpin(struct drm_gem_object *obj); 78 void *etnaviv_gem_vmap(struct drm_gem_object *obj); 79 int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op, 80 struct timespec *timeout); 81 int etnaviv_gem_cpu_fini(struct drm_gem_object *obj); 82 void etnaviv_gem_free_object(struct drm_gem_object *obj); 83 int etnaviv_gem_new_handle(struct drm_device *dev, struct drm_file *file, 84 u32 size, u32 flags, u32 *handle); 85 int etnaviv_gem_new_userptr(struct drm_device *dev, struct drm_file *file, 86 uintptr_t ptr, u32 size, u32 flags, u32 *handle); 87 u16 etnaviv_buffer_init(struct etnaviv_gpu *gpu); 88 u16 etnaviv_buffer_config_mmuv2(struct etnaviv_gpu *gpu, u32 mtlb_addr, u32 safe_addr); 89 u16 etnaviv_buffer_config_pta(struct etnaviv_gpu *gpu); 90 void etnaviv_buffer_end(struct etnaviv_gpu *gpu); 91 void etnaviv_sync_point_queue(struct etnaviv_gpu *gpu, unsigned int event); 92 void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, u32 exec_state, 93 unsigned int event, struct etnaviv_cmdbuf *cmdbuf); 94 void etnaviv_validate_init(void); 95 bool etnaviv_cmd_validate_one(struct etnaviv_gpu *gpu, 96 u32 *stream, unsigned int size, 97 struct drm_etnaviv_gem_submit_reloc *relocs, unsigned int reloc_size); 98 99 #ifdef CONFIG_DEBUG_FS 100 void etnaviv_gem_describe_objects(struct etnaviv_drm_private *priv, 101 struct seq_file *m); 102 #endif 103 104 void __iomem *etnaviv_ioremap(struct platform_device *pdev, const char *name, 105 const char *dbgname); 106 void etnaviv_writel(u32 data, void __iomem *addr); 107 u32 etnaviv_readl(const void __iomem *addr); 108 109 #define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__) 110 #define VERB(fmt, ...) if (0) DRM_DEBUG(fmt"\n", ##__VA_ARGS__) 111 112 /* 113 * Return the storage size of a structure with a variable length array. 114 * The array is nelem elements of elem_size, where the base structure 115 * is defined by base. If the size overflows size_t, return zero. 116 */ 117 static inline size_t size_vstruct(size_t nelem, size_t elem_size, size_t base) 118 { 119 if (elem_size && nelem > (SIZE_MAX - base) / elem_size) 120 return 0; 121 return base + nelem * elem_size; 122 } 123 124 /* returns true if fence a comes after fence b */ 125 static inline bool fence_after(u32 a, u32 b) 126 { 127 return (s32)(a - b) > 0; 128 } 129 130 static inline bool fence_after_eq(u32 a, u32 b) 131 { 132 return (s32)(a - b) >= 0; 133 } 134 135 static inline unsigned long etnaviv_timeout_to_jiffies( 136 const struct timespec *timeout) 137 { 138 unsigned long timeout_jiffies = timespec_to_jiffies(timeout); 139 unsigned long start_jiffies = jiffies; 140 unsigned long remaining_jiffies; 141 142 if (time_after(start_jiffies, timeout_jiffies)) 143 remaining_jiffies = 0; 144 else 145 remaining_jiffies = timeout_jiffies - start_jiffies; 146 147 return remaining_jiffies; 148 } 149 150 #endif /* __ETNAVIV_DRV_H__ */ 151