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/*
* This file is based on code from OCTEON SDK by Cavium Networks.
*
* 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.
*/
/*
* A few defines are used to control the operation of this driver:
* 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 <asm/octeon/cvmx-config.h>
#ifdef CONFIG_NETFILTER
#define REUSE_SKBUFFS_WITHOUT_FREE 0
#else
#define REUSE_SKBUFFS_WITHOUT_FREE 1
#endif
#define USE_ASYNC_IOBDMA (CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 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__ */
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