diff options
author | David Daney <ddaney@caviumnetworks.com> | 2009-05-05 17:35:21 -0700 |
---|---|---|
committer | Ralf Baechle <ralf@linux-mips.org> | 2009-06-17 11:06:30 +0100 |
commit | 80ff0fd3ab6451407a20c19b80c1643c4a6d6434 (patch) | |
tree | 2d7021ac34269f0bce3ac18f7347bf6946640f36 /drivers/staging/octeon/cvmx-packet.h | |
parent | 38295fb2a09264671c82d490ce77c17d492378e0 (diff) |
Staging: Add octeon-ethernet driver files.
The octeon-ethernet driver supports the sgmii, rgmii, spi, and xaui
ports present on the Cavium OCTEON family of SOCs. These SOCs are
multi-core mips64 processors with existing support over in arch/mips.
The driver files can be categorized into three basic groups:
1) Register definitions, these are named cvmx-*-defs.h
2) Main driver code, these have names that don't start cvmx-.
3) Interface specific functions and other utility code, names starting
with cvmx-
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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 00000000000..62ffe78a8c8 --- /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__ */ |