drivers/video/rockchip/iep/iep_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 __IEP_IOMMU_OPS_H__
  17 #define __IEP_IOMMU_OPS_H__
  18
  19 #include <linux/platform_device.h>
  20 #include "iep_drv.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 iep_iommu_info;
  45 struct iep_iommu_session_info;
  46
  47 struct iep_iommu_ops {
  48         int (*create)(struct iep_iommu_info *iommu_info);
  49         int (*import)(struct iep_iommu_session_info *session_info, int fd);
  50         int (*free)(struct iep_iommu_session_info *session_info, int idx);
  51         int (*free_fd)(struct iep_iommu_session_info *session_info, int fd);
  52         int (*map_iommu)(struct iep_iommu_session_info *session_info,
  53                          int idx,
  54                          unsigned long *iova, unsigned long *size);
  55         int (*unmap_iommu)(struct iep_iommu_session_info *session_info,
  56                            int idx);
  57         int (*destroy)(struct iep_iommu_info *iommu_info);
  58         void (*dump)(struct iep_iommu_session_info *session_info);
  59         int (*attach)(struct iep_iommu_info *iommu_info);
  60         void (*detach)(struct iep_iommu_info *iommu_info);
  61         void (*clear)(struct iep_iommu_session_info *session_info);
  62 };
  63
  64 struct iep_iommu_session_info {
  65         struct list_head head;
  66         struct iep_session *session;
  67         int buffer_nums;
  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 iep_iommu_info *iommu_info;
  74         int debug_level;
  75 };
  76
  77 struct iep_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 iep_iommu_ops *ops;
  84         int debug_level;
  85         void *private;
  86 };
  87
  88 #ifdef CONFIG_DRM
  89 void iep_iommu_drm_set_ops(struct iep_iommu_info *iommu_info);
  90 #endif
  91 #ifdef CONFIG_ION
  92 void iep_iommu_ion_set_ops(struct iep_iommu_info *iommu_info);
  93 #endif
  94
  95 struct iep_iommu_info *iep_iommu_info_create(struct device *dev,
  96                                              struct device *mmu_dev,
  97                                              int alloc_type);
  98 int iep_iommu_info_destroy(struct iep_iommu_info *iommu_info);
  99
 100 int iep_iommu_create(struct iep_iommu_info *iommu_info);
 101 int iep_iommu_import(struct iep_iommu_info *iommu_info,
 102                      struct iep_session *session, int fd);
 103 int iep_iommu_free(struct iep_iommu_info *iommu_info,
 104                    struct iep_session *session, int idx);
 105 int iep_iommu_free_fd(struct iep_iommu_info *iommu_info,
 106                       struct iep_session *session, int fd);
 107 int iep_iommu_map_iommu(struct iep_iommu_info *iommu_info,
 108                         struct iep_session *session,
 109                         int idx,
 110                         unsigned long *iova,
 111                         unsigned long *size);
 112 int iep_iommu_unmap_iommu(struct iep_iommu_info *iommu_info,
 113                           struct iep_session *session,
 114                           int idx);
 115 int iep_iommu_destroy(struct iep_iommu_info *iommu_info);
 116 void iep_iommu_dump(struct iep_iommu_info *iommu_info,
 117                     struct iep_session *session);
 118 void iep_iommu_clear(struct iep_iommu_info *iommu_info,
 119                      struct iep_session *session);
 120
 121 int iep_iommu_attach(struct iep_iommu_info *iommu_info);
 122 void iep_iommu_detach(struct iep_iommu_info *iommu_info);
 123
 124 #endif