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 #include <asm/octeon/cvmx-pip.h>
   9 #include <asm/octeon/cvmx-helper.h>
  10 #include <asm/octeon/cvmx-helper-util.h>
  11
  12 /**
  13  * cvm_oct_get_buffer_ptr - convert packet data address to pointer
  14  * @packet_ptr: Packet data hardware address
  15  *
  16  * Returns Packet buffer pointer
  17  */
  18 static inline void *cvm_oct_get_buffer_ptr(union cvmx_buf_ptr packet_ptr)
  19 {
  20         return cvmx_phys_to_ptr(((packet_ptr.s.addr >> 7) - packet_ptr.s.back)
  21                                 << 7);
  22 }
  23
  24 /**
  25  * INTERFACE - convert IPD port to logical interface
  26  * @ipd_port: Port to check
  27  *
  28  * Returns Logical interface
  29  */
  30 static inline int INTERFACE(int ipd_port)
  31 {
  32         int interface;
  33
  34         if (ipd_port == CVMX_PIP_NUM_INPUT_PORTS)
  35                 return 10;
  36         interface = cvmx_helper_get_interface_num(ipd_port);
  37         if (interface >= 0)
  38                 return interface;
  39         panic("Illegal ipd_port %d passed to %s\n", ipd_port, __func__);
  40 }
  41
  42 /**
  43  * INDEX - convert IPD/PKO port number to the port's interface index
  44  * @ipd_port: Port to check
  45  *
  46  * Returns Index into interface port list
  47  */
  48 static inline int INDEX(int ipd_port)
  49 {
  50         return cvmx_helper_get_interface_index_num(ipd_port);
  51 }