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author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-06-18 11:16:55 +1000 |
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committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-06-18 11:16:55 +1000 |
commit | 4b337c5f245b6587ba844ac7bb13c313a2912f7b (patch) | |
tree | 999c6a6580b76a083c8efb9dabff709d1c49fcd0 /drivers/staging/octeon/cvmx-packet.h | |
parent | 492b057c426e4aa747484958e18e9da29003985d (diff) | |
parent | 3fe0344faf7fdcb158bd5c1a9aec960a8d70c8e8 (diff) |
Merge commit 'origin/master' into next
Diffstat (limited to 'drivers/staging/octeon/cvmx-packet.h')
-rw-r--r-- | drivers/staging/octeon/cvmx-packet.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/drivers/staging/octeon/cvmx-packet.h b/drivers/staging/octeon/cvmx-packet.h new file mode 100644 index 000000000000..62ffe78a8c81 --- /dev/null +++ b/drivers/staging/octeon/cvmx-packet.h @@ -0,0 +1,65 @@ +/***********************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 { + /* + * 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; + } s; +}; + +#endif /* __CVMX_PACKET_H__ */ |