158f07778SDavid Daney /***********************license start*************** 258f07778SDavid Daney * Author: Cavium Networks 358f07778SDavid Daney * 458f07778SDavid Daney * Contact: support@caviumnetworks.com 558f07778SDavid Daney * This file is part of the OCTEON SDK 658f07778SDavid Daney * 758f07778SDavid Daney * Copyright (c) 2003-2008 Cavium Networks 858f07778SDavid Daney * 958f07778SDavid Daney * This file is free software; you can redistribute it and/or modify 1058f07778SDavid Daney * it under the terms of the GNU General Public License, Version 2, as 1158f07778SDavid Daney * published by the Free Software Foundation. 1258f07778SDavid Daney * 1358f07778SDavid Daney * This file is distributed in the hope that it will be useful, but 1458f07778SDavid Daney * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty 1558f07778SDavid Daney * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or 1658f07778SDavid Daney * NONINFRINGEMENT. See the GNU General Public License for more 1758f07778SDavid Daney * details. 1858f07778SDavid Daney * 1958f07778SDavid Daney * You should have received a copy of the GNU General Public License 2058f07778SDavid Daney * along with this file; if not, write to the Free Software 2158f07778SDavid Daney * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 2258f07778SDavid Daney * or visit http://www.gnu.org/licenses/. 2358f07778SDavid Daney * 2458f07778SDavid Daney * This file may also be available under a different license from Cavium. 2558f07778SDavid Daney * Contact Cavium Networks for more information 2658f07778SDavid Daney ***********************license end**************************************/ 2758f07778SDavid Daney 2858f07778SDavid Daney /* 2958f07778SDavid Daney * Packet buffer defines. 3058f07778SDavid Daney */ 3158f07778SDavid Daney 3258f07778SDavid Daney #ifndef __CVMX_PACKET_H__ 3358f07778SDavid Daney #define __CVMX_PACKET_H__ 3458f07778SDavid Daney 3558f07778SDavid Daney /** 3658f07778SDavid Daney * This structure defines a buffer pointer on Octeon 3758f07778SDavid Daney */ 3858f07778SDavid Daney union cvmx_buf_ptr { 3958f07778SDavid Daney void *ptr; 4058f07778SDavid Daney uint64_t u64; 4158f07778SDavid Daney struct { 42*11db04c8SPaul Martin #ifdef __BIG_ENDIAN_BITFIELD 4358f07778SDavid Daney /* if set, invert the "free" pick of the overall 4458f07778SDavid Daney * packet. HW always sets this bit to 0 on inbound 4558f07778SDavid Daney * packet */ 4658f07778SDavid Daney uint64_t i:1; 4758f07778SDavid Daney 4858f07778SDavid Daney /* Indicates the amount to back up to get to the 4958f07778SDavid Daney * buffer start in cache lines. In most cases this is 5058f07778SDavid Daney * less than one complete cache line, so the value is 5158f07778SDavid Daney * zero */ 5258f07778SDavid Daney uint64_t back:4; 5358f07778SDavid Daney /* The pool that the buffer came from / goes to */ 5458f07778SDavid Daney uint64_t pool:3; 5558f07778SDavid Daney /* The size of the segment pointed to by addr (in bytes) */ 5658f07778SDavid Daney uint64_t size:16; 5758f07778SDavid Daney /* Pointer to the first byte of the data, NOT buffer */ 5858f07778SDavid Daney uint64_t addr:40; 59*11db04c8SPaul Martin #else 60*11db04c8SPaul Martin uint64_t addr:40; 61*11db04c8SPaul Martin uint64_t size:16; 62*11db04c8SPaul Martin uint64_t pool:3; 63*11db04c8SPaul Martin uint64_t back:4; 64*11db04c8SPaul Martin uint64_t i:1; 65*11db04c8SPaul Martin #endif 6658f07778SDavid Daney } s; 6758f07778SDavid Daney }; 6858f07778SDavid Daney 6958f07778SDavid Daney #endif /* __CVMX_PACKET_H__ */ 70