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/***********************license start***************
* Author: Cavium Networks
*
* Contact: support@caviumnetworks.com
* This file is part of the OCTEON SDK
*
* Copyright (c) 2003-2008 Cavium Networks
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, Version 2, as
* published by the Free Software Foundation.
*
* This file is distributed in the hope that it will be useful, but
* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
* NONINFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this file; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
* or visit http://www.gnu.org/licenses/.
*
* This file may also be available under a different license from Cavium.
* Contact Cavium Networks for more information
***********************license end**************************************/
/*
* Packet buffer defines.
*/
#ifndef __CVMX_PACKET_H__
#define __CVMX_PACKET_H__
/**
* This structure defines a buffer pointer on Octeon
*/
union cvmx_buf_ptr {
void *ptr;
uint64_t u64;
struct {
#ifdef __BIG_ENDIAN_BITFIELD
/* if set, invert the "free" pick of the overall
* packet. HW always sets this bit to 0 on inbound
* packet */
uint64_t i:1;
/* Indicates the amount to back up to get to the
* buffer start in cache lines. In most cases this is
* less than one complete cache line, so the value is
* zero */
uint64_t back:4;
/* The pool that the buffer came from / goes to */
uint64_t pool:3;
/* The size of the segment pointed to by addr (in bytes) */
uint64_t size:16;
/* Pointer to the first byte of the data, NOT buffer */
uint64_t addr:40;
#else
uint64_t addr:40;
uint64_t size:16;
uint64_t pool:3;
uint64_t back:4;
uint64_t i:1;
#endif
} s;
};
#endif /* __CVMX_PACKET_H__ */
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