drivers/staging/gma500/psb_gtt.h

   1 /**************************************************************************
   2  * Copyright (c) 2007-2008, Intel Corporation.
   3  * All Rights Reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  17  *
  18  **************************************************************************/
  19
  20 #ifndef _PSB_GTT_H_
  21 #define _PSB_GTT_H_
  22
  23 #include <drm/drmP.h>
  24
  25 /*#include "img_types.h"*/
  26
  27 struct psb_gtt {
  28         struct drm_device *dev;
  29         int initialized;
  30         uint32_t gatt_start;
  31         uint32_t mmu_gatt_start;
  32         uint32_t ci_start;
  33         uint32_t rar_start;
  34         uint32_t gtt_start;
  35         uint32_t gtt_phys_start;
  36         unsigned gtt_pages;
  37         unsigned gatt_pages;
  38         uint32_t stolen_base;
  39         void *vram_addr;
  40         uint32_t pge_ctl;
  41         u16 gmch_ctrl;
  42         unsigned long stolen_size;
  43         unsigned long vram_stolen_size;
  44         unsigned long ci_stolen_size;
  45         unsigned long rar_stolen_size;
  46         uint32_t *gtt_map;
  47         struct rw_semaphore sem;
  48 };
  49
  50 struct psb_gtt_mm {
  51         struct drm_mm base;
  52         struct drm_open_hash hash;
  53         uint32_t count;
  54         spinlock_t lock;
  55 };
  56
  57 struct psb_gtt_hash_entry {
  58         struct drm_open_hash ht;
  59         uint32_t count;
  60         struct drm_hash_item item;
  61 };
  62
  63 struct psb_gtt_mem_mapping {
  64         struct drm_mm_node *node;
  65         struct drm_hash_item item;
  66 };
  67
  68 /*Exported functions*/
  69 extern int psb_gtt_init(struct psb_gtt *pg, int resume);
  70 extern int psb_gtt_insert_pages(struct psb_gtt *pg, struct page **pages,
  71                                 unsigned offset_pages, unsigned num_pages,
  72                                 unsigned desired_tile_stride,
  73                                 unsigned hw_tile_stride, int type);
  74 extern int psb_gtt_remove_pages(struct psb_gtt *pg, unsigned offset_pages,
  75                                 unsigned num_pages,
  76                                 unsigned desired_tile_stride,
  77                                 unsigned hw_tile_stride,
  78                                 int rc_prot);
  79
  80 extern struct psb_gtt *psb_gtt_alloc(struct drm_device *dev);
  81 extern void psb_gtt_takedown(struct psb_gtt *pg, int free);
  82 extern int psb_gtt_map_meminfo(struct drm_device *dev,
  83                                 void * hKernelMemInfo,
  84                                 uint32_t *offset);
  85 extern int psb_gtt_unmap_meminfo(struct drm_device *dev,
  86                                  void * hKernelMemInfo);
  87 extern int psb_gtt_map_meminfo_ioctl(struct drm_device *dev, void *data,
  88                                      struct drm_file *file_priv);
  89 extern int psb_gtt_unmap_meminfo_ioctl(struct drm_device *dev, void *data,
  90                                        struct drm_file *file_priv);
  91 extern int psb_gtt_mm_init(struct psb_gtt *pg);
  92 extern void psb_gtt_mm_takedown(void);
  93
  94 extern int psb_gtt_map_pvr_memory(struct drm_device *dev,
  95                                                                   unsigned int hHandle,
  96                                                                   unsigned int ui32TaskId,
  97                                                                   dma_addr_t *pPages,
  98                                                                   unsigned int ui32PagesNum,
  99                                                                   unsigned int *ui32Offset);
 100
 101 extern int psb_gtt_unmap_pvr_memory(struct drm_device *dev,
 102                                                                         unsigned int hHandle,
 103                                                                         unsigned int ui32TaskId);
 104
 105 #endif