projects / deliverable / linux.git / blame
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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 { | |
| 11db04c8 | 42 | #ifdef __BIG_ENDIAN_BITFIELD |
| 58f07778 DD |
43 | /* if set, invert the "free" pick of the overall |
| 44 | * packet. HW always sets this bit to 0 on inbound | |
| 45 | * packet */ | |
| 46 | uint64_t i:1; | |
| 47 | ||
| 48 | /* Indicates the amount to back up to get to the | |
| 49 | * buffer start in cache lines. In most cases this is | |
| 50 | * less than one complete cache line, so the value is | |
| 51 | * zero */ | |
| 52 | uint64_t back:4; | |
| 53 | /* The pool that the buffer came from / goes to */ | |
| 54 | uint64_t pool:3; | |
| 55 | /* The size of the segment pointed to by addr (in bytes) */ | |
| 56 | uint64_t size:16; | |
| 57 | /* Pointer to the first byte of the data, NOT buffer */ | |
| 58 | uint64_t addr:40; | |
| 11db04c8 PM |
59 | #else |
| 60 | uint64_t addr:40; | |
| 61 | uint64_t size:16; | |
| 62 | uint64_t pool:3; | |
| 63 | uint64_t back:4; | |
| 64 | uint64_t i:1; | |
| 65 | #endif | |
| 58f07778 DD |
66 | } s; |
| 67 | }; | |
| 68 | ||
| 69 | #endif /* __CVMX_PACKET_H__ */ |