70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
/***********************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__ */
|