| /********************************************************************** |
| * 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 |
| **********************************************************************/ |
| |
| /* |
| * A few defines are used to control the operation of this driver: |
| * CONFIG_CAVIUM_RESERVE32 |
| * This kernel config options controls the amount of memory configured |
| * in a wired TLB entry for all processes to share. If this is set, the |
| * driver will use this memory instead of kernel memory for pools. This |
| * allows 32bit userspace application to access the buffers, but also |
| * requires all received packets to be copied. |
| * CONFIG_CAVIUM_OCTEON_NUM_PACKET_BUFFERS |
| * This kernel config option allows the user to control the number of |
| * packet and work queue buffers allocated by the driver. If this is zero, |
| * the driver uses the default from below. |
| * USE_SKBUFFS_IN_HW |
| * Tells the driver to populate the packet buffers with kernel skbuffs. |
| * This allows the driver to receive packets without copying them. It also |
| * means that 32bit userspace can't access the packet buffers. |
| * USE_HW_TCPUDP_CHECKSUM |
| * Controls if the Octeon TCP/UDP checksum engine is used for packet |
| * output. If this is zero, the kernel will perform the checksum in |
| * software. |
| * USE_ASYNC_IOBDMA |
| * Use asynchronous IO access to hardware. This uses Octeon's asynchronous |
| * IOBDMAs to issue IO accesses without stalling. Set this to zero |
| * to disable this. Note that IOBDMAs require CVMSEG. |
| * REUSE_SKBUFFS_WITHOUT_FREE |
| * Allows the TX path to free an skbuff into the FPA hardware pool. This |
| * can significantly improve performance for forwarding and bridging, but |
| * may be somewhat dangerous. Checks are made, but if any buffer is reused |
| * without the proper Linux cleanup, the networking stack may have very |
| * bizarre bugs. |
| */ |
| #ifndef __ETHERNET_DEFINES_H__ |
| #define __ETHERNET_DEFINES_H__ |
| |
| #include "cvmx-config.h" |
| |
| |
| #define OCTEON_ETHERNET_VERSION "1.9" |
| |
| #ifndef CONFIG_CAVIUM_RESERVE32 |
| #define CONFIG_CAVIUM_RESERVE32 0 |
| #endif |
| |
| #define USE_SKBUFFS_IN_HW 1 |
| #ifdef CONFIG_NETFILTER |
| #define REUSE_SKBUFFS_WITHOUT_FREE 0 |
| #else |
| #define REUSE_SKBUFFS_WITHOUT_FREE 1 |
| #endif |
| |
| #define USE_HW_TCPUDP_CHECKSUM 1 |
| |
| /* Enable Random Early Dropping under load */ |
| #define USE_RED 1 |
| #define USE_ASYNC_IOBDMA (CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0) |
| |
| /* |
| * Allow SW based preamble removal at 10Mbps to workaround PHYs giving |
| * us bad preambles. |
| */ |
| #define USE_10MBPS_PREAMBLE_WORKAROUND 1 |
| /* |
| * Use this to have all FPA frees also tell the L2 not to write data |
| * to memory. |
| */ |
| #define DONT_WRITEBACK(x) (x) |
| /* Use this to not have FPA frees control L2 */ |
| /*#define DONT_WRITEBACK(x) 0 */ |
| |
| /* Maximum number of SKBs to try to free per xmit packet. */ |
| #define MAX_OUT_QUEUE_DEPTH 1000 |
| |
| #define FAU_TOTAL_TX_TO_CLEAN (CVMX_FAU_REG_END - sizeof(uint32_t)) |
| #define FAU_NUM_PACKET_BUFFERS_TO_FREE (FAU_TOTAL_TX_TO_CLEAN - sizeof(uint32_t)) |
| |
| #define TOTAL_NUMBER_OF_PORTS (CVMX_PIP_NUM_INPUT_PORTS+1) |
| |
| |
| #endif /* __ETHERNET_DEFINES_H__ */ |
