drivers/staging/octeon/ethernet-util.h

   1 /*
   2  * This file is based on code from OCTEON SDK by Cavium Networks.
   3  *
   4  * Copyright (c) 2003-2007 Cavium Networks
   5  *
   6  * This file is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License, Version 2, as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 #include <asm/octeon/cvmx-pip.h>
  12 #include <asm/octeon/cvmx-helper.h>
  13 #include <asm/octeon/cvmx-helper-util.h>
  14
  15 /**
  16  * cvm_oct_get_buffer_ptr - convert packet data address to pointer
  17  * @packet_ptr: Packet data hardware address
  18  *
  19  * Returns Packet buffer pointer
  20  */
  21 static inline void *cvm_oct_get_buffer_ptr(union cvmx_buf_ptr packet_ptr)
  22 {
  23         return cvmx_phys_to_ptr(((packet_ptr.s.addr >> 7) - packet_ptr.s.back)
  24                                 << 7);
  25 }
  26
  27 /**
  28  * INTERFACE - convert IPD port to logical interface
  29  * @ipd_port: Port to check
  30  *
  31  * Returns Logical interface
  32  */
  33 static inline int INTERFACE(int ipd_port)
  34 {
  35         int interface;
  36
  37         if (ipd_port == CVMX_PIP_NUM_INPUT_PORTS)
  38                 return 10;
  39         interface = cvmx_helper_get_interface_num(ipd_port);
  40         if (interface >= 0)
  41                 return interface;
  42         panic("Illegal ipd_port %d passed to INTERFACE\n", ipd_port);
  43 }
  44
  45 /**
  46  * INDEX - convert IPD/PKO port number to the port's interface index
  47  * @ipd_port: Port to check
  48  *
  49  * Returns Index into interface port list
  50  */
  51 static inline int INDEX(int ipd_port)
  52 {
  53         return cvmx_helper_get_interface_index_num(ipd_port);
  54 }