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 38 struct etnaviv_cmdbuf; 39 struct etnaviv_gpu; 40 struct etnaviv_mmu; 41 struct etnaviv_gem_object; 42 struct etnaviv_gem_submit; 43 44 struct etnaviv_file_private { 45 /* currently we don't do anything useful with this.. but when 46 * per-context address spaces are supported we'd keep track of 47 * the context's page-tables here. 48 */ 49 int dummy; 50 }; 51 52 struct etnaviv_drm_private { 53 int num_gpus; 54 struct etnaviv_gpu *gpu[ETNA_MAX_PIPES]; 55 56 /* list of GEM objects: */ 57 struct mutex gem_lock; 58 struct list_head gem_list; 59 }; 60 61 int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, 62 struct drm_file *file); 63 64 int etnaviv_gem_mmap(struct file *filp, struct vm_area_struct *vma); 65 int etnaviv_gem_fault(struct vm_fault *vmf); 66 int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset); 67 struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj); 68 void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj); 69 void etnaviv_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr); 70 int etnaviv_gem_prime_mmap(struct drm_gem_object *obj, 71 struct vm_area_struct *vma); 72 struct reservation_object *etnaviv_gem_prime_res_obj(struct drm_gem_object *obj); 73 struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev, 74 struct dma_buf_attachment *attach, struct sg_table *sg); 75 int etnaviv_gem_prime_pin(struct drm_gem_object *obj); 76 void etnaviv_gem_prime_unpin(struct drm_gem_object *obj); 77 void *etnaviv_gem_vmap(struct drm_gem_object *obj); 78 int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op, 79 struct timespec *timeout); 80 int etnaviv_gem_cpu_fini(struct drm_gem_object *obj); 81 void etnaviv_gem_free_object(struct drm_gem_object *obj); 82 int etnaviv_gem_new_handle(struct drm_device *dev, struct drm_file *file, 83 u32 size, u32 flags, u32 *handle); 84 int etnaviv_gem_new_userptr(struct drm_device *dev, struct drm_file *file, 85 uintptr_t ptr, u32 size, u32 flags, u32 *handle); 86 u16 etnaviv_buffer_init(struct etnaviv_gpu *gpu); 87 u16 etnaviv_buffer_config_mmuv2(struct etnaviv_gpu *gpu, u32 mtlb_addr, u32 safe_addr); 88 void etnaviv_buffer_end(struct etnaviv_gpu *gpu); 89 void etnaviv_sync_point_queue(struct etnaviv_gpu *gpu, unsigned int event); 90 void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, u32 exec_state, 91 unsigned int event, struct etnaviv_cmdbuf *cmdbuf); 92 void etnaviv_validate_init(void); 93 bool etnaviv_cmd_validate_one(struct etnaviv_gpu *gpu, 94 u32 *stream, unsigned int size, 95 struct drm_etnaviv_gem_submit_reloc *relocs, unsigned int reloc_size); 96 97 #ifdef CONFIG_DEBUG_FS 98 void etnaviv_gem_describe_objects(struct etnaviv_drm_private *priv, 99 struct seq_file *m); 100 #endif 101 102 void __iomem *etnaviv_ioremap(struct platform_device *pdev, const char *name, 103 const char *dbgname); 104 void etnaviv_writel(u32 data, void __iomem *addr); 105 u32 etnaviv_readl(const void __iomem *addr); 106 107 #define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__) 108 #define VERB(fmt, ...) if (0) DRM_DEBUG(fmt"\n", ##__VA_ARGS__) 109 110 /* 111 * Return the storage size of a structure with a variable length array. 112 * The array is nelem elements of elem_size, where the base structure 113 * is defined by base. If the size overflows size_t, return zero. 114 */ 115 static inline size_t size_vstruct(size_t nelem, size_t elem_size, size_t base) 116 { 117 if (elem_size && nelem > (SIZE_MAX - base) / elem_size) 118 return 0; 119 return base + nelem * elem_size; 120 } 121 122 /* returns true if fence a comes after fence b */ 123 static inline bool fence_after(u32 a, u32 b) 124 { 125 return (s32)(a - b) > 0; 126 } 127 128 static inline bool fence_after_eq(u32 a, u32 b) 129 { 130 return (s32)(a - b) >= 0; 131 } 132 133 static inline unsigned long etnaviv_timeout_to_jiffies( 134 const struct timespec *timeout) 135 { 136 unsigned long timeout_jiffies = timespec_to_jiffies(timeout); 137 unsigned long start_jiffies = jiffies; 138 unsigned long remaining_jiffies; 139 140 if (time_after(start_jiffies, timeout_jiffies)) 141 remaining_jiffies = 0; 142 else 143 remaining_jiffies = timeout_jiffies - start_jiffies; 144 145 return remaining_jiffies; 146 } 147 148 #endif /* __ETNAVIV_DRV_H__ */ 149