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 ALLOCATOR_USE_ION               0x00000000
  23 #define ALLOCATOR_USE_DRM               0x00000001
  24
  25 #define DEBUG_IOMMU_OPS_DUMP    0x00020000
  26
  27 #define vpu_iommu_debug_func(debug_level, type, fmt, args...)   \
  28         do {                                                    \
  29                 if (unlikely(debug_level & type)) {             \
  30                         pr_info("%s:%d: " fmt,                  \
  31                                  __func__, __LINE__, ##args);   \
  32                 }                                               \
  33         } while (0)
  34 #define vpu_iommu_debug(debug_level, type, fmt, args...)        \
  35         do {                                                    \
  36                 if (unlikely(debug_level & type)) {             \
  37                         pr_info(fmt, ##args);                   \
  38                 }                                               \
  39         } while (0)
  40
  41 struct vcodec_iommu_info;
  42 struct vcodec_iommu_session_info;
  43
  44 struct vcodec_iommu_ops {
  45         int (*create)(struct vcodec_iommu_info *iommu_info);
  46         int (*import)(struct vcodec_iommu_session_info *session_info, int fd);
  47         int (*free)(struct vcodec_iommu_session_info *session_info, int idx);
  48         int (*free_fd)(struct vcodec_iommu_session_info *session_info, int fd);
  49         void *(*map_kernel)(struct vcodec_iommu_session_info *session_info,
  50                                int idx);
  51         int (*unmap_kernel)(struct vcodec_iommu_session_info *session_info,
  52                             int idx);
  53         int (*map_iommu)(struct vcodec_iommu_session_info *session_info,
  54                          int idx,
  55                          unsigned long *iova, unsigned long *size);
  56         int (*unmap_iommu)(struct vcodec_iommu_session_info *session_info,
  57                            int idx);
  58         int (*destroy)(struct vcodec_iommu_info *iommu_info);
  59         void (*dump)(struct vcodec_iommu_session_info *session_info);
  60         int (*attach)(struct vcodec_iommu_info *iommu_info);
  61         void (*detach)(struct vcodec_iommu_info *iommu_info);
  62         void (*clear)(struct vcodec_iommu_session_info *session_info);
  63 };
  64
  65 struct vcodec_iommu_session_info {
  66         struct list_head head;
  67         struct vpu_session *session;
  68         struct list_head buffer_list;
  69         struct mutex list_mutex;
  70         int max_idx;
  71         struct device *dev;
  72         struct device *mmu_dev;
  73         struct vcodec_iommu_info *iommu_info;
  74         int debug_level;
  75 };
  76
  77 struct vcodec_iommu_info {
  78         struct list_head session_list;
  79         struct mutex list_mutex;
  80         struct mutex iommu_mutex;
  81         struct device *dev;
  82         struct device *mmu_dev;
  83         struct vcodec_iommu_ops *ops;
  84         int debug_level;
  85         void *private;
  86 };
  87
  88 #ifdef CONFIG_DRM
  89 void vcodec_iommu_drm_set_ops(struct vcodec_iommu_info *iommu_info);
  90 #endif
  91 #ifdef CONFIG_ION
  92 void vcodec_iommu_ion_set_ops(struct vcodec_iommu_info *iommu_info);
  93 #endif
  94
  95 struct vcodec_iommu_info *vcodec_iommu_info_create(struct device *dev,
  96                                                    struct device *mmu_dev,
  97                                                    int alloc_type);
  98 int vcodec_iommu_info_destroy(struct vcodec_iommu_info *iommu_info);
  99
 100 int vcodec_iommu_create(struct vcodec_iommu_info *iommu_info);
 101 int vcodec_iommu_import(struct vcodec_iommu_info *iommu_info,
 102                         struct vpu_session *session, int fd);
 103 int vcodec_iommu_free(struct vcodec_iommu_info *iommu_info,
 104                       struct vpu_session *session, int idx);
 105 int vcodec_iommu_free_fd(struct vcodec_iommu_info *iommu_info,
 106                          struct vpu_session *session, int fd);
 107 void *vcodec_iommu_map_kernel(struct vcodec_iommu_info *iommu_info,
 108                                  struct vpu_session *session, int idx);
 109 int vcodec_iommu_unmap_kernel(struct vcodec_iommu_info *iommu_info,
 110                               struct vpu_session *session, int idx);
 111 int vcodec_iommu_map_iommu(struct vcodec_iommu_info *iommu_info,
 112                            struct vpu_session *session,
 113                            int idx,
 114                            unsigned long *iova,
 115                            unsigned long *size);
 116 int vcodec_iommu_unmap_iommu(struct vcodec_iommu_info *iommu_info,
 117                              struct vpu_session *session,
 118                              int idx);
 119 int vcodec_iommu_destroy(struct vcodec_iommu_info *iommu_info);
 120 void vcodec_iommu_dump(struct vcodec_iommu_info *iommu_info,
 121                        struct vpu_session *session);
 122 void vcodec_iommu_clear(struct vcodec_iommu_info *iommu_info,
 123                         struct vpu_session *session);
 124
 125 int vcodec_iommu_attach(struct vcodec_iommu_info *iommu_info);
 126 void vcodec_iommu_detach(struct vcodec_iommu_info *iommu_info);
 127
 128 #endif