drivers/video/rockchip/vcodec/vcodec_iommu_ops.h

   1 /**
   2  * Copyright (C) 2016 Fuzhou Rockchip Electronics Co., Ltd
   3  * author: Jung Zhao jung.zhao@rock-chips.com
   4  *
   5  * This software is licensed under the terms of the GNU General Public
   6  * License version 2, as published by the Free Software Foundation, and
   7  * may be copied, distributed, and modified under those terms.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  */
  15
  16 #ifndef __VCODEC_IOMMU_OPS_H__
  17 #define __VCODEC_IOMMU_OPS_H__
  18
  19 #include <linux/platform_device.h>
  20 #include "vcodec_service.h"
  21
  22 #define BUFFER_LIST_MAX_NUMS    30
  23
  24 #define ALLOCATOR_USE_ION               0x00000000
  25 #define ALLOCATOR_USE_DRM               0x00000001
  26
  27 #define DEBUG_IOMMU_OPS_DUMP    0x00020000
  28
  29 #define vpu_iommu_debug_func(debug_level, type, fmt, args...)   \
  30         do {                                                    \
  31                 if (unlikely(debug_level & type)) {             \
  32                         pr_info("%s:%d: " fmt,                  \
  33                                  __func__, __LINE__, ##args);   \
  34                 }                                               \
  35         } while (0)
  36 #define vpu_iommu_debug(debug_level, type, fmt, args...)        \
  37         do {                                                    \
  38                 if (unlikely(debug_level & type)) {             \
  39                         pr_info(fmt, ##args);                   \
  40                 }                                               \
  41         } while (0)
  42
  43 struct vcodec_iommu_info;
  44 struct vcodec_iommu_session_info;
  45
  46 struct vcodec_iommu_ops {
  47         int (*create)(struct vcodec_iommu_info *iommu_info);
  48         int (*import)(struct vcodec_iommu_session_info *session_info, int fd);
  49         int (*free)(struct vcodec_iommu_session_info *session_info, int idx);
  50         int (*free_fd)(struct vcodec_iommu_session_info *session_info, int fd);
  51         void *(*map_kernel)(struct vcodec_iommu_session_info *session_info,
  52                                int idx);
  53         int (*unmap_kernel)(struct vcodec_iommu_session_info *session_info,
  54                             int idx);
  55         int (*map_iommu)(struct vcodec_iommu_session_info *session_info,
  56                          int idx,
  57                          unsigned long *iova, unsigned long *size);
  58         int (*unmap_iommu)(struct vcodec_iommu_session_info *session_info,
  59                            int idx);
  60         int (*destroy)(struct vcodec_iommu_info *iommu_info);
  61         void (*dump)(struct vcodec_iommu_session_info *session_info);
  62         int (*attach)(struct vcodec_iommu_info *iommu_info);
  63         void (*detach)(struct vcodec_iommu_info *iommu_info);
  64         void (*clear)(struct vcodec_iommu_session_info *session_info);
  65 };
  66
  67 struct vcodec_iommu_session_info {
  68         struct list_head head;
  69         struct vpu_session *session;
  70         int buffer_nums;
  71         struct list_head buffer_list;
  72         struct mutex list_mutex;
  73         int max_idx;
  74         struct device *dev;
  75         struct device *mmu_dev;
  76         struct vcodec_iommu_info *iommu_info;
  77         int debug_level;
  78 };
  79
  80 struct vcodec_iommu_info {
  81         struct list_head session_list;
  82         struct mutex list_mutex;
  83         struct mutex iommu_mutex;
  84         struct device *dev;
  85         struct device *mmu_dev;
  86         struct vcodec_iommu_ops *ops;
  87         int debug_level;
  88         void *private;
  89 };
  90
  91 #ifdef CONFIG_DRM
  92 void vcodec_iommu_drm_set_ops(struct vcodec_iommu_info *iommu_info);
  93 #endif
  94 #ifdef CONFIG_ION
  95 void vcodec_iommu_ion_set_ops(struct vcodec_iommu_info *iommu_info);
  96 #endif
  97
  98 struct vcodec_iommu_info *vcodec_iommu_info_create(struct device *dev,
  99                                                    struct device *mmu_dev,
 100                                                    int alloc_type);
 101 int vcodec_iommu_info_destroy(struct vcodec_iommu_info *iommu_info);
 102
 103 int vcodec_iommu_create(struct vcodec_iommu_info *iommu_info);
 104 int vcodec_iommu_import(struct vcodec_iommu_info *iommu_info,
 105                         struct vpu_session *session, int fd);
 106 int vcodec_iommu_free(struct vcodec_iommu_info *iommu_info,
 107                       struct vpu_session *session, int idx);
 108 int vcodec_iommu_free_fd(struct vcodec_iommu_info *iommu_info,
 109                          struct vpu_session *session, int fd);
 110 void *vcodec_iommu_map_kernel(struct vcodec_iommu_info *iommu_info,
 111                                  struct vpu_session *session, int idx);
 112 int vcodec_iommu_unmap_kernel(struct vcodec_iommu_info *iommu_info,
 113                               struct vpu_session *session, int idx);
 114 int vcodec_iommu_map_iommu(struct vcodec_iommu_info *iommu_info,
 115                            struct vpu_session *session,
 116                            int idx,
 117                            unsigned long *iova,
 118                            unsigned long *size);
 119 int vcodec_iommu_unmap_iommu(struct vcodec_iommu_info *iommu_info,
 120                              struct vpu_session *session,
 121                              int idx);
 122 int vcodec_iommu_destroy(struct vcodec_iommu_info *iommu_info);
 123 void vcodec_iommu_dump(struct vcodec_iommu_info *iommu_info,
 124                        struct vpu_session *session);
 125 void vcodec_iommu_clear(struct vcodec_iommu_info *iommu_info,
 126                         struct vpu_session *session);
 127
 128 int vcodec_iommu_attach(struct vcodec_iommu_info *iommu_info);
 129 void vcodec_iommu_detach(struct vcodec_iommu_info *iommu_info);
 130
 131 #endif