| /***********************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__ */ |