14Srgrimes/*- 24Srgrimes * Copyright (c) 2010 Juli Mallett <jmallett@FreeBSD.org> 34Srgrimes * All rights reserved. 44Srgrimes * 54Srgrimes * Redistribution and use in source and binary forms, with or without 64Srgrimes * modification, are permitted provided that the following conditions 74Srgrimes * are met: 84Srgrimes * 1. Redistributions of source code must retain the above copyright 94Srgrimes * notice, this list of conditions and the following disclaimer. 104Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 114Srgrimes * notice, this list of conditions and the following disclaimer in the 124Srgrimes * documentation and/or other materials provided with the distribution. 134Srgrimes * 144Srgrimes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 154Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 164Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 174Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 184Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 194Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 204Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 214Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 224Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 234Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 244Srgrimes * SUCH DAMAGE. 254Srgrimes * 264Srgrimes * $FreeBSD$ 274Srgrimes */ 284Srgrimes 294Srgrimes/* 304Srgrimes * Interface to the Marvell 88E61XX SMI/MDIO. 314Srgrimes */ 32621Srgrimes 3350477Speter#include <sys/cdefs.h> 344Srgrimes__FBSDID("$FreeBSD$"); 354Srgrimes 36719Swollman#include <sys/param.h> 37719Swollman#include <sys/systm.h> 38719Swollman#include <sys/bus.h> 394Srgrimes#include <sys/endian.h> 40114349Speter#include <sys/kernel.h> 41114349Speter#include <sys/mbuf.h> 42114349Speter#include <sys/socket.h> 43114349Speter 44114349Speter#include <dev/mii/mii.h> 454Srgrimes 46114349Speter#include <net/ethernet.h> 47114349Speter#include <net/if.h> 48114349Speter 49114349Speter#include "wrapper-cvmx-includes.h" 50114349Speter#include "ethernet-headers.h" 51114349Speter 52114349Speter#define MV88E61XX_SMI_REG_CMD 0x00 /* Indirect command register. */ 53114349Speter#define MV88E61XX_SMI_CMD_BUSY 0x8000 /* Busy bit. */ 54114349Speter#define MV88E61XX_SMI_CMD_22 0x1000 /* Clause 22 (default 45.) */ 55114349Speter#define MV88E61XX_SMI_CMD_READ 0x0800 /* Read command. */ 56114349Speter#define MV88E61XX_SMI_CMD_WRITE 0x0400 /* Write command. */ 57114349Speter#define MV88E61XX_SMI_CMD_PHY(phy) (((phy) & 0x1f) << 5) 58114349Speter#define MV88E61XX_SMI_CMD_REG(reg) ((reg) & 0x1f) 59114349Speter 60145120Speter#define MV88E61XX_SMI_REG_DAT 0x01 /* Indirect data register. */ 61114349Speter 62145120Speterstatic int cvm_oct_mv88e61xx_smi_read(struct ifnet *, int, int); 63114349Speterstatic void cvm_oct_mv88e61xx_smi_write(struct ifnet *, int, int, int); 644Srgrimesstatic int cvm_oct_mv88e61xx_smi_wait(struct ifnet *); 6546129Sluoqi 66114349Speterint 67122849Spetercvm_oct_mv88e61xx_setup_device(struct ifnet *ifp) 68114349Speter{ 69114349Speter cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc; 70719Swollman 71 priv->mdio_read = cvm_oct_mv88e61xx_smi_read; 72 priv->mdio_write = cvm_oct_mv88e61xx_smi_write; 73 priv->phy_device = "mv88e61xxphy"; 74 75 return (0); 76} 77 78static int 79cvm_oct_mv88e61xx_smi_read(struct ifnet *ifp, int phy_id, int location) 80{ 81 cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc; 82 int error; 83 84 error = cvm_oct_mv88e61xx_smi_wait(ifp); 85 if (error != 0) 86 return (0); 87 88 cvm_oct_mdio_write(ifp, priv->phy_id, MV88E61XX_SMI_REG_CMD, 89 MV88E61XX_SMI_CMD_BUSY | MV88E61XX_SMI_CMD_22 | 90 MV88E61XX_SMI_CMD_READ | MV88E61XX_SMI_CMD_PHY(phy_id) | 91 MV88E61XX_SMI_CMD_REG(location)); 92 93 error = cvm_oct_mv88e61xx_smi_wait(ifp); 94 if (error != 0) 95 return (0); 96 97 return (cvm_oct_mdio_read(ifp, priv->phy_id, MV88E61XX_SMI_REG_DAT)); 98} 99 100static void 101cvm_oct_mv88e61xx_smi_write(struct ifnet *ifp, int phy_id, int location, int val) 102{ 103 cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc; 104 105 cvm_oct_mv88e61xx_smi_wait(ifp); 106 cvm_oct_mdio_write(ifp, priv->phy_id, MV88E61XX_SMI_REG_DAT, val); 107 cvm_oct_mdio_write(ifp, priv->phy_id, MV88E61XX_SMI_REG_CMD, 108 MV88E61XX_SMI_CMD_BUSY | MV88E61XX_SMI_CMD_22 | 109 MV88E61XX_SMI_CMD_WRITE | MV88E61XX_SMI_CMD_PHY(phy_id) | 110 MV88E61XX_SMI_CMD_REG(location)); 111 cvm_oct_mv88e61xx_smi_wait(ifp); 112} 113 114static int 115cvm_oct_mv88e61xx_smi_wait(struct ifnet *ifp) 116{ 117 cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc; 118 uint16_t cmd; 119 unsigned i; 120 121 for (i = 0; i < 10000; i++) { 122 cmd = cvm_oct_mdio_read(ifp, priv->phy_id, MV88E61XX_SMI_REG_CMD); 123 if ((cmd & MV88E61XX_SMI_CMD_BUSY) == 0) 124 return (0); 125 } 126 return (ETIMEDOUT); 127} 128