1*4882a593Smuzhiyun /***********************license start*************** 2*4882a593Smuzhiyun * Author: Cavium Networks 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * Contact: support@caviumnetworks.com 5*4882a593Smuzhiyun * This file is part of the OCTEON SDK 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * Copyright (c) 2003-2008 Cavium Networks 8*4882a593Smuzhiyun * 9*4882a593Smuzhiyun * This file is free software; you can redistribute it and/or modify 10*4882a593Smuzhiyun * it under the terms of the GNU General Public License, Version 2, as 11*4882a593Smuzhiyun * published by the Free Software Foundation. 12*4882a593Smuzhiyun * 13*4882a593Smuzhiyun * This file is distributed in the hope that it will be useful, but 14*4882a593Smuzhiyun * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty 15*4882a593Smuzhiyun * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or 16*4882a593Smuzhiyun * NONINFRINGEMENT. See the GNU General Public License for more 17*4882a593Smuzhiyun * details. 18*4882a593Smuzhiyun * 19*4882a593Smuzhiyun * You should have received a copy of the GNU General Public License 20*4882a593Smuzhiyun * along with this file; if not, write to the Free Software 21*4882a593Smuzhiyun * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 22*4882a593Smuzhiyun * or visit http://www.gnu.org/licenses/. 23*4882a593Smuzhiyun * 24*4882a593Smuzhiyun * This file may also be available under a different license from Cavium. 25*4882a593Smuzhiyun * Contact Cavium Networks for more information 26*4882a593Smuzhiyun ***********************license end**************************************/ 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun /* 29*4882a593Smuzhiyun * Packet buffer defines. 30*4882a593Smuzhiyun */ 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun #ifndef __CVMX_PACKET_H__ 33*4882a593Smuzhiyun #define __CVMX_PACKET_H__ 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun /** 36*4882a593Smuzhiyun * This structure defines a buffer pointer on Octeon 37*4882a593Smuzhiyun */ 38*4882a593Smuzhiyun union cvmx_buf_ptr { 39*4882a593Smuzhiyun void *ptr; 40*4882a593Smuzhiyun uint64_t u64; 41*4882a593Smuzhiyun struct { 42*4882a593Smuzhiyun #ifdef __BIG_ENDIAN_BITFIELD 43*4882a593Smuzhiyun /* if set, invert the "free" pick of the overall 44*4882a593Smuzhiyun * packet. HW always sets this bit to 0 on inbound 45*4882a593Smuzhiyun * packet */ 46*4882a593Smuzhiyun uint64_t i:1; 47*4882a593Smuzhiyun 48*4882a593Smuzhiyun /* Indicates the amount to back up to get to the 49*4882a593Smuzhiyun * buffer start in cache lines. In most cases this is 50*4882a593Smuzhiyun * less than one complete cache line, so the value is 51*4882a593Smuzhiyun * zero */ 52*4882a593Smuzhiyun uint64_t back:4; 53*4882a593Smuzhiyun /* The pool that the buffer came from / goes to */ 54*4882a593Smuzhiyun uint64_t pool:3; 55*4882a593Smuzhiyun /* The size of the segment pointed to by addr (in bytes) */ 56*4882a593Smuzhiyun uint64_t size:16; 57*4882a593Smuzhiyun /* Pointer to the first byte of the data, NOT buffer */ 58*4882a593Smuzhiyun uint64_t addr:40; 59*4882a593Smuzhiyun #else 60*4882a593Smuzhiyun uint64_t addr:40; 61*4882a593Smuzhiyun uint64_t size:16; 62*4882a593Smuzhiyun uint64_t pool:3; 63*4882a593Smuzhiyun uint64_t back:4; 64*4882a593Smuzhiyun uint64_t i:1; 65*4882a593Smuzhiyun #endif 66*4882a593Smuzhiyun } s; 67*4882a593Smuzhiyun }; 68*4882a593Smuzhiyun 69*4882a593Smuzhiyun #endif /* __CVMX_PACKET_H__ */ 70