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1 | /********************************************************************** |
2 | * Author: Cavium Networks | |
3 | * | |
4 | * Contact: support@caviumnetworks.com | |
5 | * This file is part of the OCTEON SDK | |
6 | * | |
7 | * Copyright (c) 2003-2007 Cavium Networks | |
8 | * | |
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. | |
12 | * | |
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 | |
17 | * details. | |
18 | * | |
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/. | |
23 | * | |
24 | * This file may also be available under a different license from Cavium. | |
25 | * Contact Cavium Networks for more information | |
26 | **********************************************************************/ | |
27 | ||
28 | /* | |
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. | |
40 | * USE_SKBUFFS_IN_HW | |
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. | |
80ff0fd3 DD |
44 | * USE_HW_TCPUDP_CHECKSUM |
45 | * Controls if the Octeon TCP/UDP checksum engine is used for packet | |
46 | * output. If this is zero, the kernel will perform the checksum in | |
47 | * software. | |
80ff0fd3 DD |
48 | * USE_ASYNC_IOBDMA |
49 | * Use asynchronous IO access to hardware. This uses Octeon's asynchronous | |
50 | * IOBDMAs to issue IO accesses without stalling. Set this to zero | |
51 | * to disable this. Note that IOBDMAs require CVMSEG. | |
52 | * REUSE_SKBUFFS_WITHOUT_FREE | |
53 | * Allows the TX path to free an skbuff into the FPA hardware pool. This | |
54 | * can significantly improve performance for forwarding and bridging, but | |
55 | * may be somewhat dangerous. Checks are made, but if any buffer is reused | |
56 | * without the proper Linux cleanup, the networking stack may have very | |
57 | * bizarre bugs. | |
58 | */ | |
59 | #ifndef __ETHERNET_DEFINES_H__ | |
60 | #define __ETHERNET_DEFINES_H__ | |
61 | ||
af866496 | 62 | #include <asm/octeon/cvmx-config.h> |
80ff0fd3 DD |
63 | |
64 | ||
65 | #define OCTEON_ETHERNET_VERSION "1.9" | |
66 | ||
67 | #ifndef CONFIG_CAVIUM_RESERVE32 | |
68 | #define CONFIG_CAVIUM_RESERVE32 0 | |
69 | #endif | |
70 | ||
80ff0fd3 DD |
71 | #define USE_SKBUFFS_IN_HW 1 |
72 | #ifdef CONFIG_NETFILTER | |
73 | #define REUSE_SKBUFFS_WITHOUT_FREE 0 | |
74 | #else | |
75 | #define REUSE_SKBUFFS_WITHOUT_FREE 1 | |
76 | #endif | |
80ff0fd3 | 77 | |
80ff0fd3 DD |
78 | #define USE_HW_TCPUDP_CHECKSUM 1 |
79 | ||
80ff0fd3 DD |
80 | /* Enable Random Early Dropping under load */ |
81 | #define USE_RED 1 | |
82 | #define USE_ASYNC_IOBDMA (CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0) | |
83 | ||
84 | /* | |
85 | * Allow SW based preamble removal at 10Mbps to workaround PHYs giving | |
86 | * us bad preambles. | |
87 | */ | |
88 | #define USE_10MBPS_PREAMBLE_WORKAROUND 1 | |
89 | /* | |
90 | * Use this to have all FPA frees also tell the L2 not to write data | |
91 | * to memory. | |
92 | */ | |
93 | #define DONT_WRITEBACK(x) (x) | |
94 | /* Use this to not have FPA frees control L2 */ | |
95 | /*#define DONT_WRITEBACK(x) 0 */ | |
96 | ||
a620c163 | 97 | /* Maximum number of SKBs to try to free per xmit packet. */ |
80ff0fd3 DD |
98 | #define MAX_OUT_QUEUE_DEPTH 1000 |
99 | ||
4898c560 DD |
100 | #define FAU_TOTAL_TX_TO_CLEAN (CVMX_FAU_REG_END - sizeof(uint32_t)) |
101 | #define FAU_NUM_PACKET_BUFFERS_TO_FREE (FAU_TOTAL_TX_TO_CLEAN - sizeof(uint32_t)) | |
102 | ||
80ff0fd3 DD |
103 | #define TOTAL_NUMBER_OF_PORTS (CVMX_PIP_NUM_INPUT_PORTS+1) |
104 | ||
105 | ||
106 | #endif /* __ETHERNET_DEFINES_H__ */ |