drivers/staging/octeon/ethernet-util.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * This file is based on code from OCTEON SDK by Cavium Networks.
   4  *
   5  * Copyright (c) 2003-2007 Cavium Networks
   6  */
   7
   8 /**
   9  * cvm_oct_get_buffer_ptr - convert packet data address to pointer
  10  * @packet_ptr: Packet data hardware address
  11  *
  12  * Returns Packet buffer pointer
  13  */
  14 static inline void *cvm_oct_get_buffer_ptr(union cvmx_buf_ptr packet_ptr)
  15 {
  16         return cvmx_phys_to_ptr(((packet_ptr.s.addr >> 7) - packet_ptr.s.back)
  17                                 << 7);
  18 }
  19
  20 /**
  21  * INTERFACE - convert IPD port to logical interface
  22  * @ipd_port: Port to check
  23  *
  24  * Returns Logical interface
  25  */
  26 static inline int INTERFACE(int ipd_port)
  27 {
  28         int interface;
  29
  30         if (ipd_port == CVMX_PIP_NUM_INPUT_PORTS)
  31                 return 10;
  32         interface = cvmx_helper_get_interface_num(ipd_port);
  33         if (interface >= 0)
  34                 return interface;
  35         panic("Illegal ipd_port %d passed to %s\n", ipd_port, __func__);
  36 }
  37
  38 /**
  39  * INDEX - convert IPD/PKO port number to the port's interface index
  40  * @ipd_port: Port to check
  41  *
  42  * Returns Index into interface port list
  43  */
  44 static inline int INDEX(int ipd_port)
  45 {
  46         return cvmx_helper_get_interface_index_num(ipd_port);
  47 }