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/***********************license start***************
* Copyright (c) 2003-2010 Cavium Inc. (support@cavium.com). All rights
* reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of Cavium Inc. nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
* This Software, including technical data, may be subject to U.S. export control
* laws, including the U.S. Export Administration Act and its associated
* regulations, and may be subject to export or import regulations in other
* countries.
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
* AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
* THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
* DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
* SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
* MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF
* VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
* CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR
* PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
***********************license end**************************************/
/**
* @file
*
* Interface to the GMX hardware.
*
* <hr>$Revision: 70030 $<hr>
*/
#ifndef __CVMX_GMX_H__
#define __CVMX_GMX_H__
#ifdef __cplusplus
extern "C" {
#endif
/* CSR typedefs have been moved to cvmx-gmx-defs.h */
/**
* Disables the sending of flow control (pause) frames on the specified
* RGMII port(s).
*
* @param interface Which interface (0 or 1)
* @param port_mask Mask (4bits) of which ports on the interface to disable
* backpressure on.
* 1 => disable backpressure
* 0 => enable backpressure
*
* @return 0 on success
* -1 on error
*/
static inline int cvmx_gmx_set_backpressure_override(uint32_t interface, uint32_t port_mask)
{
cvmx_gmxx_tx_ovr_bp_t gmxx_tx_ovr_bp;
/* Check for valid arguments */
if (port_mask & ~0xf || interface & ~0x1)
return(-1);
gmxx_tx_ovr_bp.u64 = 0;
gmxx_tx_ovr_bp.s.en = port_mask; /* Per port Enable back pressure override */
gmxx_tx_ovr_bp.s.ign_full = port_mask; /* Ignore the RX FIFO full when computing BP */
cvmx_write_csr(CVMX_GMXX_TX_OVR_BP(interface), gmxx_tx_ovr_bp.u64);
return(0);
}
#ifdef __cplusplus
}
#endif
#endif
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