1 /**********************************************************************
2 * Author: Cavium Networks
4 * Contact: support@caviumnetworks.com
5 * This file is part of the OCTEON SDK
7 * Copyright (c) 2003-2007 Cavium Networks
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.
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
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/.
24 * This file may also be available under a different license from Cavium.
25 * Contact Cavium Networks for more information
26 **********************************************************************/
29 * A few defines are used to control the operation of this driver:
30 * CONFIG_CAVIUM_RESERVE32
31 * This kernel config options controls the amount of memory configured
32 * in a wired TLB entry for all processes to share. If this is set, the
33 * driver will use this memory instead of kernel memory for pools. This
34 * allows 32bit userspace application to access the buffers, but also
35 * requires all received packets to be copied.
36 * CONFIG_CAVIUM_OCTEON_NUM_PACKET_BUFFERS
37 * This kernel config option allows the user to control the number of
38 * packet and work queue buffers allocated by the driver. If this is zero,
39 * the driver uses the default from below.
41 * Tells the driver to populate the packet buffers with kernel skbuffs.
42 * This allows the driver to receive packets without copying them. It also
43 * means that 32bit userspace can't access the packet buffers.
45 * This define tells the driver to allocate memory for buffers from the
46 * 32bit sahred region instead of the kernel memory space.
47 * USE_HW_TCPUDP_CHECKSUM
48 * Controls if the Octeon TCP/UDP checksum engine is used for packet
49 * output. If this is zero, the kernel will perform the checksum in
51 * USE_MULTICORE_RECEIVE
52 * Process receive interrupts on multiple cores. This spreads the network
53 * load across the first 8 processors. If ths is zero, only one core
54 * processes incomming packets.
56 * Use asynchronous IO access to hardware. This uses Octeon's asynchronous
57 * IOBDMAs to issue IO accesses without stalling. Set this to zero
58 * to disable this. Note that IOBDMAs require CVMSEG.
59 * REUSE_SKBUFFS_WITHOUT_FREE
60 * Allows the TX path to free an skbuff into the FPA hardware pool. This
61 * can significantly improve performance for forwarding and bridging, but
62 * may be somewhat dangerous. Checks are made, but if any buffer is reused
63 * without the proper Linux cleanup, the networking stack may have very
66 #ifndef __ETHERNET_DEFINES_H__
67 #define __ETHERNET_DEFINES_H__
69 #include "cvmx-config.h"
72 #define OCTEON_ETHERNET_VERSION "1.9"
74 #ifndef CONFIG_CAVIUM_RESERVE32
75 #define CONFIG_CAVIUM_RESERVE32 0
78 #if CONFIG_CAVIUM_RESERVE32
79 #define USE_32BIT_SHARED 1
80 #define USE_SKBUFFS_IN_HW 0
81 #define REUSE_SKBUFFS_WITHOUT_FREE 0
83 #define USE_32BIT_SHARED 0
84 #define USE_SKBUFFS_IN_HW 1
85 #ifdef CONFIG_NETFILTER
86 #define REUSE_SKBUFFS_WITHOUT_FREE 0
88 #define REUSE_SKBUFFS_WITHOUT_FREE 1
92 /* Max interrupts per second per core */
93 #define INTERRUPT_LIMIT 10000
95 /* Don't limit the number of interrupts */
96 /*#define INTERRUPT_LIMIT 0 */
97 #define USE_HW_TCPUDP_CHECKSUM 1
99 #define USE_MULTICORE_RECEIVE 1
101 /* Enable Random Early Dropping under load */
103 #define USE_ASYNC_IOBDMA (CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0)
106 * Allow SW based preamble removal at 10Mbps to workaround PHYs giving
109 #define USE_10MBPS_PREAMBLE_WORKAROUND 1
111 * Use this to have all FPA frees also tell the L2 not to write data
114 #define DONT_WRITEBACK(x) (x)
115 /* Use this to not have FPA frees control L2 */
116 /*#define DONT_WRITEBACK(x) 0 */
118 /* Maximum number of packets to process per interrupt. */
119 #define MAX_RX_PACKETS 120
120 #define MAX_OUT_QUEUE_DEPTH 1000
123 #undef USE_MULTICORE_RECEIVE
124 #define USE_MULTICORE_RECEIVE 0
127 #define IP_PROTOCOL_TCP 6
128 #define IP_PROTOCOL_UDP 0x11
130 #define FAU_NUM_PACKET_BUFFERS_TO_FREE (CVMX_FAU_REG_END - sizeof(uint32_t))
131 #define TOTAL_NUMBER_OF_PORTS (CVMX_PIP_NUM_INPUT_PORTS+1)
134 #endif /* __ETHERNET_DEFINES_H__ */