David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 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. |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 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. |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 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 | |
| 62 | #include "cvmx-config.h" |
| 63 | |
| 64 | |
| 65 | #define OCTEON_ETHERNET_VERSION "1.9" |
| 66 | |
| 67 | #ifndef CONFIG_CAVIUM_RESERVE32 |
| 68 | #define CONFIG_CAVIUM_RESERVE32 0 |
| 69 | #endif |
| 70 | |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 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 |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 77 | |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 78 | #define USE_HW_TCPUDP_CHECKSUM 1 |
| 79 | |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 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 | |
David Daney | a620c16 | 2009-06-23 16:20:56 -0700 | [diff] [blame] | 97 | /* Maximum number of SKBs to try to free per xmit packet. */ |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 98 | #define MAX_OUT_QUEUE_DEPTH 1000 |
| 99 | |
David Daney | 4898c56 | 2010-02-15 15:06:47 -0800 | [diff] [blame] | 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 | |
David Daney | 80ff0fd | 2009-05-05 17:35:21 -0700 | [diff] [blame] | 103 | #define TOTAL_NUMBER_OF_PORTS (CVMX_PIP_NUM_INPUT_PORTS+1) |
| 104 | |
| 105 | |
| 106 | #endif /* __ETHERNET_DEFINES_H__ */ |