drivers/gpu/host1x/host1x_bo.h

   1 /*
   2  * Tegra host1x Memory Management Abstraction header
   3  *
   4  * Copyright (c) 2012-2013, NVIDIA Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef _HOST1X_BO_H
  20 #define _HOST1X_BO_H
  21
  22 struct host1x_bo;
  23
  24 struct host1x_bo_ops {
  25         struct host1x_bo *(*get)(struct host1x_bo *bo);
  26         void (*put)(struct host1x_bo *bo);
  27         dma_addr_t (*pin)(struct host1x_bo *bo, struct sg_table **sgt);
  28         void (*unpin)(struct host1x_bo *bo, struct sg_table *sgt);
  29         void *(*mmap)(struct host1x_bo *bo);
  30         void (*munmap)(struct host1x_bo *bo, void *addr);
  31         void *(*kmap)(struct host1x_bo *bo, unsigned int pagenum);
  32         void (*kunmap)(struct host1x_bo *bo, unsigned int pagenum, void *addr);
  33 };
  34
  35 struct host1x_bo {
  36         const struct host1x_bo_ops *ops;
  37 };
  38
  39 static inline void host1x_bo_init(struct host1x_bo *bo,
  40                                   const struct host1x_bo_ops *ops)
  41 {
  42         bo->ops = ops;
  43 }
  44
  45 static inline struct host1x_bo *host1x_bo_get(struct host1x_bo *bo)
  46 {
  47         return bo->ops->get(bo);
  48 }
  49
  50 static inline void host1x_bo_put(struct host1x_bo *bo)
  51 {
  52         bo->ops->put(bo);
  53 }
  54
  55 static inline dma_addr_t host1x_bo_pin(struct host1x_bo *bo,
  56                                        struct sg_table **sgt)
  57 {
  58         return bo->ops->pin(bo, sgt);
  59 }
  60
  61 static inline void host1x_bo_unpin(struct host1x_bo *bo, struct sg_table *sgt)
  62 {
  63         bo->ops->unpin(bo, sgt);
  64 }
  65
  66 static inline void *host1x_bo_mmap(struct host1x_bo *bo)
  67 {
  68         return bo->ops->mmap(bo);
  69 }
  70
  71 static inline void host1x_bo_munmap(struct host1x_bo *bo, void *addr)
  72 {
  73         bo->ops->munmap(bo, addr);
  74 }
  75
  76 static inline void *host1x_bo_kmap(struct host1x_bo *bo, unsigned int pagenum)
  77 {
  78         return bo->ops->kmap(bo, pagenum);
  79 }
  80
  81 static inline void host1x_bo_kunmap(struct host1x_bo *bo,
  82                                     unsigned int pagenum, void *addr)
  83 {
  84         bo->ops->kunmap(bo, pagenum, addr);
  85 }
  86
  87 #endif