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/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__ */