1/************************************************************************* 2Copyright (c) 2003-2007 Cavium Networks (support@cavium.com). All rights 3reserved. 4 5 6Redistribution and use in source and binary forms, with or without 7modification, are permitted provided that the following conditions are 8met: 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 Networks 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 23This 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. 24 25TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" 26AND WITH ALL FAULTS AND CAVIUM NETWORKS 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. 27 28*************************************************************************/ 29 30#include <sys/cdefs.h> 31__FBSDID("$FreeBSD$"); 32 33#include <sys/param.h> 34#include <sys/systm.h> 35#include <sys/bus.h> 36#include <sys/endian.h> 37#include <sys/kernel.h> 38#include <sys/mbuf.h> 39#include <sys/socket.h> 40#include <sys/lock.h> 41#include <sys/mutex.h> 42 43#include <net/ethernet.h> 44#include <net/if.h> 45#include <net/if_var.h> 46 47#include "wrapper-cvmx-includes.h" 48#include "ethernet-headers.h" 49 50struct mtx cvm_oct_mdio_mtx; 51MTX_SYSINIT(cvm_oct_mdio, &cvm_oct_mdio_mtx, "MDIO", MTX_DEF); 52 53/** 54 * Perform an MII read. Called by the generic MII routines 55 * 56 * @param dev Device to perform read for 57 * @param phy_id The MII phy id 58 * @param location Register location to read 59 * @return Result from the read or zero on failure 60 */ 61int cvm_oct_mdio_read(struct ifnet *ifp, int phy_id, int location) 62{ 63 cvmx_smi_cmd_t smi_cmd; 64 cvmx_smi_rd_dat_t smi_rd; 65 66 MDIO_LOCK(); 67 smi_cmd.u64 = 0; 68 smi_cmd.s.phy_op = 1; 69 smi_cmd.s.phy_adr = phy_id; 70 smi_cmd.s.reg_adr = location; 71 cvmx_write_csr(CVMX_SMI_CMD, smi_cmd.u64); 72 73 do { 74 cvmx_wait(1000); 75 smi_rd.u64 = cvmx_read_csr(CVMX_SMI_RD_DAT); 76 } while (smi_rd.s.pending); 77 78 MDIO_UNLOCK(); 79 80 if (smi_rd.s.val) 81 return smi_rd.s.dat; 82 else 83 return 0; 84} 85 86 87/** 88 * Perform an MII write. Called by the generic MII routines 89 * 90 * @param dev Device to perform write for 91 * @param phy_id The MII phy id 92 * @param location Register location to write 93 * @param val Value to write 94 */ 95void cvm_oct_mdio_write(struct ifnet *ifp, int phy_id, int location, int val) 96{ 97 cvmx_smi_cmd_t smi_cmd; 98 cvmx_smi_wr_dat_t smi_wr; 99 100 MDIO_LOCK(); 101 smi_wr.u64 = 0; 102 smi_wr.s.dat = val; 103 cvmx_write_csr(CVMX_SMI_WR_DAT, smi_wr.u64); 104 105 smi_cmd.u64 = 0; 106 smi_cmd.s.phy_op = 0; 107 smi_cmd.s.phy_adr = phy_id; 108 smi_cmd.s.reg_adr = location; 109 cvmx_write_csr(CVMX_SMI_CMD, smi_cmd.u64); 110 111 do { 112 cvmx_wait(1000); 113 smi_wr.u64 = cvmx_read_csr(CVMX_SMI_WR_DAT); 114 } while (smi_wr.s.pending); 115 MDIO_UNLOCK(); 116} 117 118/** 119 * Setup the MDIO device structures 120 * 121 * @param dev Device to setup 122 * 123 * @return Zero on success, negative on failure 124 */ 125int cvm_oct_mdio_setup_device(struct ifnet *ifp) 126{ 127 cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc; 128 129 priv->phy_id = cvmx_helper_board_get_mii_address(priv->port); 130 priv->phy_device = NULL; 131 priv->mdio_read = NULL; 132 priv->mdio_write = NULL; 133 134 return 0; 135} 136 137