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 #define DEBUG_IOMMU_NORMAL      0x00040000
  29
  30 #define vpu_iommu_debug_func(debug_level, type, fmt, args...)   \
  31         do {                                                    \
  32                 if (unlikely(debug_level & type)) {             \
  33                         pr_info("%s:%d: " fmt,                  \
  34                                  __func__, __LINE__, ##args);   \
  35                 }                                               \
  36         } while (0)
  37 #define vpu_iommu_debug(debug_level, type, fmt, args...)        \
  38         do {                                                    \
  39                 if (unlikely(debug_level & type)) {             \
  40                         pr_info(fmt, ##args);                   \
  41                 }                                               \
  42         } while (0)
  43
  44 struct vcodec_iommu_info;
  45 struct vcodec_iommu_session_info;
  46
  47 struct vcodec_iommu_ops {
  48         int (*create)(struct vcodec_iommu_info *iommu_info);
  49         int (*import)(struct vcodec_iommu_session_info *session_info, int fd);
  50         int (*free)(struct vcodec_iommu_session_info *session_info, int idx);
  51         int (*free_fd)(struct vcodec_iommu_session_info *session_info, int fd);
  52         void *(*map_kernel)(struct vcodec_iommu_session_info *session_info,
  53                                int idx);
  54         int (*unmap_kernel)(struct vcodec_iommu_session_info *session_info,
  55                             int idx);
  56         int (*map_iommu)(struct vcodec_iommu_session_info *session_info,
  57                          int idx,
  58                          unsigned long *iova, unsigned long *size);
  59         int (*unmap_iommu)(struct vcodec_iommu_session_info *session_info,
  60                            int idx);
  61         int (*destroy)(struct vcodec_iommu_info *iommu_info);
  62         void (*dump)(struct vcodec_iommu_session_info *session_info);
  63         int (*attach)(struct vcodec_iommu_info *iommu_info);
  64         void (*detach)(struct vcodec_iommu_info *iommu_info);
  65         void (*clear)(struct vcodec_iommu_session_info *session_info);
  66 };
  67
  68 struct vcodec_iommu_session_info {
  69         struct list_head head;
  70         struct vpu_session *session;
  71         int buffer_nums;
  72         struct list_head buffer_list;
  73         struct mutex list_mutex;
  74         int max_idx;
  75         struct device *dev;
  76         struct device *mmu_dev;
  77         struct vcodec_iommu_info *iommu_info;
  78         int debug_level;
  79 };
  80
  81 struct vcodec_iommu_info {
  82         struct list_head session_list;
  83         struct mutex list_mutex;
  84         struct mutex iommu_mutex;
  85         struct device *dev;
  86         struct device *mmu_dev;
  87         struct vcodec_iommu_ops *ops;
  88         int debug_level;
  89         void *private;
  90 };
  91
  92 #ifdef CONFIG_DRM
  93 void vcodec_iommu_drm_set_ops(struct vcodec_iommu_info *iommu_info);
  94 #endif
  95 #ifdef CONFIG_ION
  96 void vcodec_iommu_ion_set_ops(struct vcodec_iommu_info *iommu_info);
  97 #endif
  98
  99 struct vcodec_iommu_info *vcodec_iommu_info_create(struct device *dev,
 100                                                    struct device *mmu_dev,
 101                                                    int alloc_type);
 102 int vcodec_iommu_info_destroy(struct vcodec_iommu_info *iommu_info);
 103
 104 int vcodec_iommu_create(struct vcodec_iommu_info *iommu_info);
 105 int vcodec_iommu_import(struct vcodec_iommu_info *iommu_info,
 106                         struct vpu_session *session, int fd);
 107 int vcodec_iommu_free(struct vcodec_iommu_info *iommu_info,
 108                       struct vpu_session *session, int idx);
 109 int vcodec_iommu_free_fd(struct vcodec_iommu_info *iommu_info,
 110                          struct vpu_session *session, int fd);
 111 void *vcodec_iommu_map_kernel(struct vcodec_iommu_info *iommu_info,
 112                                  struct vpu_session *session, int idx);
 113 int vcodec_iommu_unmap_kernel(struct vcodec_iommu_info *iommu_info,
 114                               struct vpu_session *session, int idx);
 115 int vcodec_iommu_map_iommu(struct vcodec_iommu_info *iommu_info,
 116                            struct vpu_session *session,
 117                            int idx,
 118                            unsigned long *iova,
 119                            unsigned long *size);
 120 int vcodec_iommu_unmap_iommu(struct vcodec_iommu_info *iommu_info,
 121                              struct vpu_session *session,
 122                              int idx);
 123 int vcodec_iommu_destroy(struct vcodec_iommu_info *iommu_info);
 124 void vcodec_iommu_dump(struct vcodec_iommu_info *iommu_info,
 125                        struct vpu_session *session);
 126 void vcodec_iommu_clear(struct vcodec_iommu_info *iommu_info,
 127                         struct vpu_session *session);
 128
 129 int vcodec_iommu_attach(struct vcodec_iommu_info *iommu_info);
 130 void vcodec_iommu_detach(struct vcodec_iommu_info *iommu_info);
 131
 132 #endif