David Daney | 58f0777 | 2008-12-23 15:22:14 -0800 | [diff] [blame] | 1 | /***********************license start*************** |
| 2 | * Author: Cavium Networks |
| 3 | * |
| 4 | * Contact: support@caviumnetworks.com |
| 5 | * This file is part of the OCTEON SDK |
| 6 | * |
| 7 | * Copyright (c) 2003-2008 Cavium Networks |
| 8 | * |
| 9 | * This file is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License, Version 2, as |
| 11 | * published by the Free Software Foundation. |
| 12 | * |
| 13 | * This file is distributed in the hope that it will be useful, but |
| 14 | * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty |
| 15 | * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or |
| 16 | * NONINFRINGEMENT. See the GNU General Public License for more |
| 17 | * details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this file; if not, write to the Free Software |
| 21 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 22 | * or visit http://www.gnu.org/licenses/. |
| 23 | * |
| 24 | * This file may also be available under a different license from Cavium. |
| 25 | * Contact Cavium Networks for more information |
| 26 | ***********************license end**************************************/ |
| 27 | |
| 28 | /* |
| 29 | * Packet buffer defines. |
| 30 | */ |
| 31 | |
| 32 | #ifndef __CVMX_PACKET_H__ |
| 33 | #define __CVMX_PACKET_H__ |
| 34 | |
| 35 | /** |
| 36 | * This structure defines a buffer pointer on Octeon |
| 37 | */ |
| 38 | union cvmx_buf_ptr { |
| 39 | void *ptr; |
| 40 | uint64_t u64; |
| 41 | struct { |
| 42 | /* if set, invert the "free" pick of the overall |
| 43 | * packet. HW always sets this bit to 0 on inbound |
| 44 | * packet */ |
| 45 | uint64_t i:1; |
| 46 | |
| 47 | /* Indicates the amount to back up to get to the |
| 48 | * buffer start in cache lines. In most cases this is |
| 49 | * less than one complete cache line, so the value is |
| 50 | * zero */ |
| 51 | uint64_t back:4; |
| 52 | /* The pool that the buffer came from / goes to */ |
| 53 | uint64_t pool:3; |
| 54 | /* The size of the segment pointed to by addr (in bytes) */ |
| 55 | uint64_t size:16; |
| 56 | /* Pointer to the first byte of the data, NOT buffer */ |
| 57 | uint64_t addr:40; |
| 58 | } s; |
| 59 | }; |
| 60 | |
| 61 | #endif /* __CVMX_PACKET_H__ */ |