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| 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/ethernet-util.h | |
| parent | 38295fb2a09264671c82d490ce77c17d492378e0 (diff) | |
| download | linux-80ff0fd3ab6451407a20c19b80c1643c4a6d6434.tar.gz linux-80ff0fd3ab6451407a20c19b80c1643c4a6d6434.tar.bz2 linux-80ff0fd3ab6451407a20c19b80c1643c4a6d6434.zip | |
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/ethernet-util.h')
| -rw-r--r-- | drivers/staging/octeon/ethernet-util.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/drivers/staging/octeon/ethernet-util.h b/drivers/staging/octeon/ethernet-util.h new file mode 100644 index 000000000000..37b665918000 --- /dev/null +++ b/drivers/staging/octeon/ethernet-util.h @@ -0,0 +1,81 @@ +/********************************************************************** + * Author: Cavium Networks + * + * Contact: support@caviumnetworks.com + * This file is part of the OCTEON SDK + * + * Copyright (c) 2003-2007 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 +*********************************************************************/ + +#define DEBUGPRINT(format, ...) do { if (printk_ratelimit()) \ + printk(format, ##__VA_ARGS__); \ + } while (0) + +/** + * Given a packet data address, return a pointer to the + * beginning of the packet buffer. + * + * @packet_ptr: Packet data hardware address + * Returns Packet buffer pointer + */ +static inline void *cvm_oct_get_buffer_ptr(union cvmx_buf_ptr packet_ptr) +{ + return cvmx_phys_to_ptr(((packet_ptr.s.addr >> 7) - packet_ptr.s.back) + << 7); +} + +/** + * Given an IPD/PKO port number, return the logical interface it is + * on. + * + * @ipd_port: Port to check + * + * Returns Logical interface + */ +static inline int INTERFACE(int ipd_port) +{ + if (ipd_port < 32) /* Interface 0 or 1 for RGMII,GMII,SPI, etc */ + return ipd_port >> 4; + else if (ipd_port < 36) /* Interface 2 for NPI */ + return 2; + else if (ipd_port < 40) /* Interface 3 for loopback */ + return 3; + else if (ipd_port == 40) /* Non existant interface for POW0 */ + return 4; + else + panic("Illegal ipd_port %d passed to INTERFACE\n", ipd_port); +} + +/** + * Given an IPD/PKO port number, return the port's index on a + * logical interface. + * + * @ipd_port: Port to check + * + * Returns Index into interface port list + */ +static inline int INDEX(int ipd_port) +{ + if (ipd_port < 32) + return ipd_port & 15; + else + return ipd_port & 3; +} |