drivers/staging/csr/csr_wifi_hip_conversions.h

   1 /*****************************************************************************
   2
   3             (c) Cambridge Silicon Radio Limited 2011
   4             All rights reserved and confidential information of CSR
   5
   6             Refer to LICENSE.txt included with this source for details
   7             on the license terms.
   8
   9 *****************************************************************************/
  10
  11 /*
  12  * ---------------------------------------------------------------------------
  13  *
  14  * FILE: csr_wifi_hip_conversions.h
  15  *
  16  * PURPOSE:
  17  *      This header file provides the macros for converting to and from
  18  *      wire format.
  19  *      These macros *MUST* work for little-endian AND big-endian hosts.
  20  *
  21  * ---------------------------------------------------------------------------
  22  */
  23 #ifndef __CSR_WIFI_HIP_CONVERSIONS_H__
  24 #define __CSR_WIFI_HIP_CONVERSIONS_H__
  25
  26 #define SIZEOF_UINT16           2
  27 #define SIZEOF_UINT32           4
  28 #define SIZEOF_UINT64           8
  29
  30 #define SIZEOF_SIGNAL_HEADER    6
  31 #define SIZEOF_DATAREF          4
  32
  33
  34 /*
  35  * Macro to retrieve the signal ID from a wire-format signal.
  36  */
  37 #define GET_SIGNAL_ID(_buf)     CSR_GET_UINT16_FROM_LITTLE_ENDIAN((_buf))
  38
  39 /*
  40  * Macros to retrieve and set the DATAREF fields in a packed (i.e. wire-format)
  41  * HIP signal.
  42  */
  43 #define GET_PACKED_DATAREF_SLOT(_buf, _ref)                             \
  44     CSR_GET_UINT16_FROM_LITTLE_ENDIAN(((_buf) + SIZEOF_SIGNAL_HEADER + ((_ref) * SIZEOF_DATAREF) + 0))
  45
  46 #define GET_PACKED_DATAREF_LEN(_buf, _ref)                              \
  47     CSR_GET_UINT16_FROM_LITTLE_ENDIAN(((_buf) + SIZEOF_SIGNAL_HEADER + ((_ref) * SIZEOF_DATAREF) + 2))
  48
  49 #define SET_PACKED_DATAREF_SLOT(_buf, _ref, _slot)                      \
  50     CSR_COPY_UINT16_TO_LITTLE_ENDIAN((_slot), ((_buf) + SIZEOF_SIGNAL_HEADER + ((_ref) * SIZEOF_DATAREF) + 0))
  51
  52 #define SET_PACKED_DATAREF_LEN(_buf, _ref, _len)                        \
  53     CSR_COPY_UINT16_TO_LITTLE_ENDIAN((_len), ((_buf) + SIZEOF_SIGNAL_HEADER + ((_ref) * SIZEOF_DATAREF) + 2))
  54
  55 #define GET_PACKED_MA_PACKET_REQUEST_FRAME_PRIORITY(_buf)              \
  56     CSR_GET_UINT16_FROM_LITTLE_ENDIAN(((_buf) + SIZEOF_SIGNAL_HEADER + UNIFI_MAX_DATA_REFERENCES * SIZEOF_DATAREF + 8))
  57
  58 #define GET_PACKED_MA_PACKET_REQUEST_HOST_TAG(_buf)                     \
  59     CSR_GET_UINT32_FROM_LITTLE_ENDIAN(((_buf) + SIZEOF_SIGNAL_HEADER + UNIFI_MAX_DATA_REFERENCES * SIZEOF_DATAREF + 4))
  60
  61 #define GET_PACKED_MA_PACKET_CONFIRM_HOST_TAG(_buf)                     \
  62     CSR_GET_UINT32_FROM_LITTLE_ENDIAN(((_buf) + SIZEOF_SIGNAL_HEADER + UNIFI_MAX_DATA_REFERENCES * SIZEOF_DATAREF + 8))
  63
  64 #define GET_PACKED_MA_PACKET_CONFIRM_TRANSMISSION_STATUS(_buf)                     \
  65     CSR_GET_UINT16_FROM_LITTLE_ENDIAN(((_buf) + SIZEOF_SIGNAL_HEADER + UNIFI_MAX_DATA_REFERENCES * SIZEOF_DATAREF + 2))
  66
  67
  68 s32 get_packed_struct_size(const u8 *buf);
  69 CsrResult read_unpack_signal(const u8 *ptr, CSR_SIGNAL *sig);
  70 CsrResult write_pack(const CSR_SIGNAL *sig, u8 *ptr, u16 *sig_len);
  71
  72 #endif /* __CSR_WIFI_HIP_CONVERSIONS_H__ */
  73