drivers/gpu/drm/etnaviv/etnaviv_drv.h

   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 int etnaviv_gem_prime_mmap(struct drm_gem_object *obj,
  82                            struct vm_area_struct *vma);
  83 struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev,
  84         struct dma_buf_attachment *attach, struct sg_table *sg);
  85 int etnaviv_gem_prime_pin(struct drm_gem_object *obj);
  86 void etnaviv_gem_prime_unpin(struct drm_gem_object *obj);
  87 void *etnaviv_gem_vmap(struct drm_gem_object *obj);
  88 int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op,
  89                 struct timespec *timeout);
  90 int etnaviv_gem_cpu_fini(struct drm_gem_object *obj);
  91 void etnaviv_gem_free_object(struct drm_gem_object *obj);
  92 int etnaviv_gem_new_handle(struct drm_device *dev, struct drm_file *file,
  93                 u32 size, u32 flags, u32 *handle);
  94 struct drm_gem_object *etnaviv_gem_new_locked(struct drm_device *dev,
  95                 u32 size, u32 flags);
  96 struct drm_gem_object *etnaviv_gem_new(struct drm_device *dev,
  97                 u32 size, u32 flags);
  98 int etnaviv_gem_new_userptr(struct drm_device *dev, struct drm_file *file,
  99         uintptr_t ptr, u32 size, u32 flags, u32 *handle);
 100 u16 etnaviv_buffer_init(struct etnaviv_gpu *gpu);
 101 u16 etnaviv_buffer_config_mmuv2(struct etnaviv_gpu *gpu, u32 mtlb_addr, u32 safe_addr);
 102 void etnaviv_buffer_end(struct etnaviv_gpu *gpu);
 103 void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, unsigned int event,
 104         struct etnaviv_cmdbuf *cmdbuf);
 105 void etnaviv_validate_init(void);
 106 bool etnaviv_cmd_validate_one(struct etnaviv_gpu *gpu,
 107         u32 *stream, unsigned int size,
 108         struct drm_etnaviv_gem_submit_reloc *relocs, unsigned int reloc_size);
 109
 110 #ifdef CONFIG_DEBUG_FS
 111 void etnaviv_gem_describe_objects(struct etnaviv_drm_private *priv,
 112         struct seq_file *m);
 113 #endif
 114
 115 void __iomem *etnaviv_ioremap(struct platform_device *pdev, const char *name,
 116                 const char *dbgname);
 117 void etnaviv_writel(u32 data, void __iomem *addr);
 118 u32 etnaviv_readl(const void __iomem *addr);
 119
 120 #define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
 121 #define VERB(fmt, ...) if (0) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
 122
 123 /*
 124  * Return the storage size of a structure with a variable length array.
 125  * The array is nelem elements of elem_size, where the base structure
 126  * is defined by base.  If the size overflows size_t, return zero.
 127  */
 128 static inline size_t size_vstruct(size_t nelem, size_t elem_size, size_t base)
 129 {
 130         if (elem_size && nelem > (SIZE_MAX - base) / elem_size)
 131                 return 0;
 132         return base + nelem * elem_size;
 133 }
 134
 135 /* returns true if fence a comes after fence b */
 136 static inline bool fence_after(u32 a, u32 b)
 137 {
 138         return (s32)(a - b) > 0;
 139 }
 140
 141 static inline bool fence_after_eq(u32 a, u32 b)
 142 {
 143         return (s32)(a - b) >= 0;
 144 }
 145
 146 static inline unsigned long etnaviv_timeout_to_jiffies(
 147         const struct timespec *timeout)
 148 {
 149         unsigned long timeout_jiffies = timespec_to_jiffies(timeout);
 150         unsigned long start_jiffies = jiffies;
 151         unsigned long remaining_jiffies;
 152
 153         if (time_after(start_jiffies, timeout_jiffies))
 154                 remaining_jiffies = 0;
 155         else
 156                 remaining_jiffies = timeout_jiffies - start_jiffies;
 157
 158         return remaining_jiffies;
 159 }
 160
 161 #endif /* __ETNAVIV_DRV_H__ */