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/iommu.h> 30 #include <linux/types.h> 31 #include <linux/sizes.h> 32 33 #include <drm/drmP.h> 34 #include <drm/drm_crtc_helper.h> 35 #include <drm/drm_fb_helper.h> 36 #include <drm/drm_gem.h> 37 #include <drm/etnaviv_drm.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 /* currently we don't do anything useful with this.. but when 47 * per-context address spaces are supported we'd keep track of 48 * the context's page-tables here. 49 */ 50 int dummy; 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 struct workqueue_struct *wq; 62 }; 63 64 static inline void etnaviv_queue_work(struct drm_device *dev, 65 struct work_struct *w) 66 { 67 struct etnaviv_drm_private *priv = dev->dev_private; 68 69 queue_work(priv->wq, w); 70 } 71 72 int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, 73 struct drm_file *file); 74 75 int etnaviv_gem_mmap(struct file *filp, struct vm_area_struct *vma); 76 int etnaviv_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf); 77 int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset); 78 struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj); 79 void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj); 80 void etnaviv_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr); 81 struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev, 82 struct dma_buf_attachment *attach, struct sg_table *sg); 83 int etnaviv_gem_prime_pin(struct drm_gem_object *obj); 84 void etnaviv_gem_prime_unpin(struct drm_gem_object *obj); 85 void *etnaviv_gem_vmap(struct drm_gem_object *obj); 86 int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op, 87 struct timespec *timeout); 88 int etnaviv_gem_cpu_fini(struct drm_gem_object *obj); 89 void etnaviv_gem_free_object(struct drm_gem_object *obj); 90 int etnaviv_gem_new_handle(struct drm_device *dev, struct drm_file *file, 91 u32 size, u32 flags, u32 *handle); 92 struct drm_gem_object *etnaviv_gem_new_locked(struct drm_device *dev, 93 u32 size, u32 flags); 94 struct drm_gem_object *etnaviv_gem_new(struct drm_device *dev, 95 u32 size, u32 flags); 96 int etnaviv_gem_new_userptr(struct drm_device *dev, struct drm_file *file, 97 uintptr_t ptr, u32 size, u32 flags, u32 *handle); 98 u16 etnaviv_buffer_init(struct etnaviv_gpu *gpu); 99 u16 etnaviv_buffer_config_mmuv2(struct etnaviv_gpu *gpu, u32 mtlb_addr, u32 safe_addr); 100 void etnaviv_buffer_end(struct etnaviv_gpu *gpu); 101 void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, unsigned int event, 102 struct etnaviv_cmdbuf *cmdbuf); 103 void etnaviv_validate_init(void); 104 bool etnaviv_cmd_validate_one(struct etnaviv_gpu *gpu, 105 u32 *stream, unsigned int size, 106 struct drm_etnaviv_gem_submit_reloc *relocs, unsigned int reloc_size); 107 108 #ifdef CONFIG_DEBUG_FS 109 void etnaviv_gem_describe_objects(struct etnaviv_drm_private *priv, 110 struct seq_file *m); 111 #endif 112 113 void __iomem *etnaviv_ioremap(struct platform_device *pdev, const char *name, 114 const char *dbgname); 115 void etnaviv_writel(u32 data, void __iomem *addr); 116 u32 etnaviv_readl(const void __iomem *addr); 117 118 #define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__) 119 #define VERB(fmt, ...) if (0) DRM_DEBUG(fmt"\n", ##__VA_ARGS__) 120 121 /* 122 * Return the storage size of a structure with a variable length array. 123 * The array is nelem elements of elem_size, where the base structure 124 * is defined by base. If the size overflows size_t, return zero. 125 */ 126 static inline size_t size_vstruct(size_t nelem, size_t elem_size, size_t base) 127 { 128 if (elem_size && nelem > (SIZE_MAX - base) / elem_size) 129 return 0; 130 return base + nelem * elem_size; 131 } 132 133 /* returns true if fence a comes after fence b */ 134 static inline bool fence_after(u32 a, u32 b) 135 { 136 return (s32)(a - b) > 0; 137 } 138 139 static inline bool fence_after_eq(u32 a, u32 b) 140 { 141 return (s32)(a - b) >= 0; 142 } 143 144 static inline unsigned long etnaviv_timeout_to_jiffies( 145 const struct timespec *timeout) 146 { 147 unsigned long timeout_jiffies = timespec_to_jiffies(timeout); 148 unsigned long start_jiffies = jiffies; 149 unsigned long remaining_jiffies; 150 151 if (time_after(start_jiffies, timeout_jiffies)) 152 remaining_jiffies = 0; 153 else 154 remaining_jiffies = timeout_jiffies - start_jiffies; 155 156 return remaining_jiffies; 157 } 158 159 #endif /* __ETNAVIV_DRV_H__ */ 160