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