drivers/staging/rtl8188eu/core/rtw_io.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  17  *
  18  *
  19  ******************************************************************************/
  20 /*
  21
  22 The purpose of rtw_io.c
  23
  24 a. provides the API
  25
  26 b. provides the protocol engine
  27
  28 c. provides the software interface between caller and the hardware interface
  29
  30
  31 Compiler Flag Option:
  32
  33 USB:
  34    a. USE_ASYNC_IRP: Both sync/async operations are provided.
  35
  36 Only sync read/rtw_write_mem operations are provided.
  37
  38 jackson@realtek.com.tw
  39
  40 */
  41
  42 #define _RTW_IO_C_
  43 #include <osdep_service.h>
  44 #include <drv_types.h>
  45 #include <rtw_io.h>
  46 #include <osdep_intf.h>
  47 #include <usb_ops.h>
  48
  49 #define rtw_le16_to_cpu(val)            le16_to_cpu(val)
  50 #define rtw_le32_to_cpu(val)            le32_to_cpu(val)
  51 #define rtw_cpu_to_le16(val)            cpu_to_le16(val)
  52 #define rtw_cpu_to_le32(val)            cpu_to_le32(val)
  53
  54
  55 u8 _rtw_read8(struct adapter *adapter, u32 addr)
  56 {
  57         u8 r_val;
  58         struct io_priv *pio_priv = &adapter->iopriv;
  59         struct  intf_hdl *pintfhdl = &(pio_priv->intf);
  60         u8 (*_read8)(struct adapter *pintfhdl, u32 addr);
  61
  62         _read8 = pintfhdl->io_ops._read8;
  63         r_val = _read8(adapter, addr);
  64         return r_val;
  65 }
  66
  67 u16 _rtw_read16(struct adapter *adapter, u32 addr)
  68 {
  69         u16 r_val;
  70         struct io_priv *pio_priv = &adapter->iopriv;
  71         struct  intf_hdl                *pintfhdl = &(pio_priv->intf);
  72         u16 (*_read16)(struct adapter *pintfhdl, u32 addr);
  73         _read16 = pintfhdl->io_ops._read16;
  74
  75         r_val = _read16(adapter, addr);
  76         return r_val;
  77 }
  78
  79 u32 _rtw_read32(struct adapter *adapter, u32 addr)
  80 {
  81         u32 r_val;
  82         struct io_priv *pio_priv = &adapter->iopriv;
  83         struct  intf_hdl                *pintfhdl = &(pio_priv->intf);
  84         u32     (*_read32)(struct adapter *pintfhdl, u32 addr);
  85         _read32 = pintfhdl->io_ops._read32;
  86
  87         r_val = _read32(adapter, addr);
  88         return r_val;
  89 }
  90
  91 int rtw_init_io_priv(struct adapter *padapter, void (*set_intf_ops)(struct _io_ops *pops))
  92 {
  93         struct io_priv  *piopriv = &padapter->iopriv;
  94         struct intf_hdl *pintf = &piopriv->intf;
  95
  96         if (set_intf_ops == NULL)
  97                 return _FAIL;
  98
  99         piopriv->padapter = padapter;
 100         pintf->padapter = padapter;
 101         pintf->pintf_dev = adapter_to_dvobj(padapter);
 102
 103         set_intf_ops(&pintf->io_ops);
 104
 105         return _SUCCESS;
 106 }