projects / deliverable / linux.git / blame
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|---|---|---|
| 80ff0fd3 DD |
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: | |
| 80ff0fd3 DD |
30 | * USE_SKBUFFS_IN_HW |
| 31 | * Tells the driver to populate the packet buffers with kernel skbuffs. | |
| 32 | * This allows the driver to receive packets without copying them. It also | |
| 33 | * means that 32bit userspace can't access the packet buffers. | |
| 80ff0fd3 DD |
34 | * USE_HW_TCPUDP_CHECKSUM |
| 35 | * Controls if the Octeon TCP/UDP checksum engine is used for packet | |
| 36 | * output. If this is zero, the kernel will perform the checksum in | |
| 37 | * software. | |
| 80ff0fd3 DD |
38 | * USE_ASYNC_IOBDMA |
| 39 | * Use asynchronous IO access to hardware. This uses Octeon's asynchronous | |
| 40 | * IOBDMAs to issue IO accesses without stalling. Set this to zero | |
| 41 | * to disable this. Note that IOBDMAs require CVMSEG. | |
| 42 | * REUSE_SKBUFFS_WITHOUT_FREE | |
| 43 | * Allows the TX path to free an skbuff into the FPA hardware pool. This | |
| 44 | * can significantly improve performance for forwarding and bridging, but | |
| 45 | * may be somewhat dangerous. Checks are made, but if any buffer is reused | |
| 46 | * without the proper Linux cleanup, the networking stack may have very | |
| 47 | * bizarre bugs. | |
| 48 | */ | |
| 49 | #ifndef __ETHERNET_DEFINES_H__ | |
| 50 | #define __ETHERNET_DEFINES_H__ | |
| 51 | ||
| af866496 | 52 | #include <asm/octeon/cvmx-config.h> |
| 80ff0fd3 DD |
53 | |
| 54 | ||
| 55 | #define OCTEON_ETHERNET_VERSION "1.9" | |
| 56 | ||
| 80ff0fd3 DD |
57 | #define USE_SKBUFFS_IN_HW 1 |
| 58 | #ifdef CONFIG_NETFILTER | |
| 59 | #define REUSE_SKBUFFS_WITHOUT_FREE 0 | |
| 60 | #else | |
| 61 | #define REUSE_SKBUFFS_WITHOUT_FREE 1 | |
| 62 | #endif | |
| 80ff0fd3 | 63 | |
| 80ff0fd3 DD |
64 | #define USE_HW_TCPUDP_CHECKSUM 1 |
| 65 | ||
| 80ff0fd3 DD |
66 | /* Enable Random Early Dropping under load */ |
| 67 | #define USE_RED 1 | |
| 68 | #define USE_ASYNC_IOBDMA (CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0) | |
| 69 | ||
| 80ff0fd3 DD |
70 | /* |
| 71 | * Use this to have all FPA frees also tell the L2 not to write data | |
| 72 | * to memory. | |
| 73 | */ | |
| 74 | #define DONT_WRITEBACK(x) (x) | |
| 75 | /* Use this to not have FPA frees control L2 */ | |
| 76 | /*#define DONT_WRITEBACK(x) 0 */ | |
| 77 | ||
| a620c163 | 78 | /* Maximum number of SKBs to try to free per xmit packet. */ |
| 80ff0fd3 DD |
79 | #define MAX_OUT_QUEUE_DEPTH 1000 |
| 80 | ||
| 4898c560 DD |
81 | #define FAU_TOTAL_TX_TO_CLEAN (CVMX_FAU_REG_END - sizeof(uint32_t)) |
| 82 | #define FAU_NUM_PACKET_BUFFERS_TO_FREE (FAU_TOTAL_TX_TO_CLEAN - sizeof(uint32_t)) | |
| 83 | ||
| 80ff0fd3 DD |
84 | #define TOTAL_NUMBER_OF_PORTS (CVMX_PIP_NUM_INPUT_PORTS+1) |
| 85 | ||
| 86 | ||
| 87 | #endif /* __ETHERNET_DEFINES_H__ */ |