The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/mips/cavium/octe/ethernet-util.h

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    1 /*************************************************************************
    2 Copyright (c) 2003-2007  Cavium Networks (support@cavium.com). All rights
    3 reserved.
    4 
    5 
    6 Redistribution and use in source and binary forms, with or without
    7 modification, are permitted provided that the following conditions are
    8 met:
    9 
   10     * Redistributions of source code must retain the above copyright
   11       notice, this list of conditions and the following disclaimer.
   12 
   13     * Redistributions in binary form must reproduce the above
   14       copyright notice, this list of conditions and the following
   15       disclaimer in the documentation and/or other materials provided
   16       with the distribution.
   17 
   18     * Neither the name of Cavium Networks nor the names of
   19       its contributors may be used to endorse or promote products
   20       derived from this software without specific prior written
   21       permission.
   22 
   23 This Software, including technical data, may be subject to U.S. export  control laws, including the U.S. Export Administration Act and its  associated regulations, and may be subject to export or import  regulations in other countries.
   24 
   25 TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
   26 AND WITH ALL FAULTS AND CAVIUM  NETWORKS MAKES NO PROMISES, REPRESENTATIONS OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE  RISK ARISING OUT OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
   27 
   28 *************************************************************************/
   29 /* $FreeBSD$ */
   30 
   31 #define DEBUGPRINT(format, ...) printf(format, ##__VA_ARGS__)
   32 
   33 /**
   34  * Given a packet data address, return a pointer to the
   35  * beginning of the packet buffer.
   36  *
   37  * @param packet_ptr Packet data hardware address
   38  * @return Packet buffer pointer
   39  */
   40 static inline char *cvm_oct_get_buffer_ptr(cvmx_buf_ptr_t packet_ptr)
   41 {
   42         return cvmx_phys_to_ptr(((packet_ptr.s.addr >> 7) - packet_ptr.s.back) << 7);
   43 }
   44 
   45 
   46 /**
   47  * Given an IPD/PKO port number, return the logical interface it is
   48  * on.
   49  *
   50  * @param ipd_port Port to check
   51  *
   52  * @return Logical interface
   53  */
   54 static inline int INTERFACE(int ipd_port)
   55 {
   56         if (ipd_port < 32)    /* Interface 0 or 1 for RGMII,GMII,SPI, etc */
   57                 return ipd_port>>4;
   58         else if (ipd_port < 36)   /* Interface 2 for NPI */
   59                 return 2;
   60         else if (ipd_port < 40)   /* Interface 3 for loopback */
   61                 return 3;
   62         else if (ipd_port == 40)  /* Non existant interface for POW0 */
   63                 return 4;
   64         else
   65                 panic("Illegal ipd_port %d passed to INTERFACE\n", ipd_port);
   66 }
   67 
   68 
   69 /**
   70  * Given an IPD/PKO port number, return the port's index on a
   71  * logical interface.
   72  *
   73  * @param ipd_port Port to check
   74  *
   75  * @return Index into interface port list
   76  */
   77 static inline int INDEX(int ipd_port)
   78 {
   79         if (ipd_port < 32)
   80                 return ipd_port & 15;
   81         else
   82                 return ipd_port & 3;
   83 }
   84 

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