cvmx-gmx.h revision 302408
1/***********************license start*************** 2 * Copyright (c) 2003-2010 Cavium Inc. (support@cavium.com). All rights 3 * reserved. 4 * 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are 8 * met: 9 * 10 * * Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * * Redistributions in binary form must reproduce the above 14 * copyright notice, this list of conditions and the following 15 * disclaimer in the documentation and/or other materials provided 16 * with the distribution. 17 18 * * Neither the name of Cavium Inc. nor the names of 19 * its contributors may be used to endorse or promote products 20 * derived from this software without specific prior written 21 * permission. 22 23 * This Software, including technical data, may be subject to U.S. export control 24 * laws, including the U.S. Export Administration Act and its associated 25 * regulations, and may be subject to export or import regulations in other 26 * countries. 27 28 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" 29 * AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR 30 * WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO 31 * THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR 32 * DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM 33 * SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE, 34 * MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF 35 * VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR 36 * CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR 37 * PERFORMANCE OF THE SOFTWARE LIES WITH YOU. 38 ***********************license end**************************************/ 39 40 41 42 43 44 45 46/** 47 * @file 48 * 49 * Interface to the GMX hardware. 50 * 51 * <hr>$Revision: 70030 $<hr> 52 */ 53 54#ifndef __CVMX_GMX_H__ 55#define __CVMX_GMX_H__ 56 57#ifdef __cplusplus 58extern "C" { 59#endif 60 61/* CSR typedefs have been moved to cvmx-gmx-defs.h */ 62 63/** 64 * Disables the sending of flow control (pause) frames on the specified 65 * RGMII port(s). 66 * 67 * @param interface Which interface (0 or 1) 68 * @param port_mask Mask (4bits) of which ports on the interface to disable 69 * backpressure on. 70 * 1 => disable backpressure 71 * 0 => enable backpressure 72 * 73 * @return 0 on success 74 * -1 on error 75 */ 76 77static inline int cvmx_gmx_set_backpressure_override(uint32_t interface, uint32_t port_mask) 78{ 79 cvmx_gmxx_tx_ovr_bp_t gmxx_tx_ovr_bp; 80 /* Check for valid arguments */ 81 if (port_mask & ~0xf || interface & ~0x1) 82 return(-1); 83 gmxx_tx_ovr_bp.u64 = 0; 84 gmxx_tx_ovr_bp.s.en = port_mask; /* Per port Enable back pressure override */ 85 gmxx_tx_ovr_bp.s.ign_full = port_mask; /* Ignore the RX FIFO full when computing BP */ 86 cvmx_write_csr(CVMX_GMXX_TX_OVR_BP(interface), gmxx_tx_ovr_bp.u64); 87 return(0); 88 89} 90 91#ifdef __cplusplus 92} 93#endif 94 95#endif 96 97