1213346Sjmallett/*- 2213346Sjmallett * Copyright (c) 2010 Juli Mallett <jmallett@FreeBSD.org> 3213346Sjmallett * All rights reserved. 4213346Sjmallett * 5213346Sjmallett * Redistribution and use in source and binary forms, with or without 6213346Sjmallett * modification, are permitted provided that the following conditions 7213346Sjmallett * are met: 8213346Sjmallett * 1. Redistributions of source code must retain the above copyright 9213346Sjmallett * notice, this list of conditions and the following disclaimer. 10213346Sjmallett * 2. Redistributions in binary form must reproduce the above copyright 11213346Sjmallett * notice, this list of conditions and the following disclaimer in the 12213346Sjmallett * documentation and/or other materials provided with the distribution. 13213346Sjmallett * 14213346Sjmallett * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15213346Sjmallett * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16213346Sjmallett * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17213346Sjmallett * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18213346Sjmallett * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19213346Sjmallett * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20213346Sjmallett * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21213346Sjmallett * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22213346Sjmallett * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23213346Sjmallett * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24213346Sjmallett * SUCH DAMAGE. 25213346Sjmallett * 26213346Sjmallett * $FreeBSD$ 27213346Sjmallett */ 28213346Sjmallett 29213346Sjmallett/* 30213346Sjmallett * Interface to the Marvell 88E61XX SMI/MDIO. 31213346Sjmallett */ 32213346Sjmallett 33213346Sjmallett#include <sys/cdefs.h> 34213346Sjmallett__FBSDID("$FreeBSD$"); 35213346Sjmallett 36213346Sjmallett#include <sys/param.h> 37213346Sjmallett#include <sys/systm.h> 38213346Sjmallett#include <sys/bus.h> 39213346Sjmallett#include <sys/endian.h> 40213346Sjmallett#include <sys/kernel.h> 41213346Sjmallett#include <sys/mbuf.h> 42213346Sjmallett#include <sys/socket.h> 43213346Sjmallett 44213346Sjmallett#include <dev/mii/mii.h> 45213346Sjmallett 46213346Sjmallett#include <net/ethernet.h> 47213346Sjmallett#include <net/if.h> 48213346Sjmallett 49213346Sjmallett#include "wrapper-cvmx-includes.h" 50213346Sjmallett#include "ethernet-headers.h" 51213346Sjmallett 52213346Sjmallett#define MV88E61XX_SMI_REG_CMD 0x00 /* Indirect command register. */ 53213346Sjmallett#define MV88E61XX_SMI_CMD_BUSY 0x8000 /* Busy bit. */ 54213346Sjmallett#define MV88E61XX_SMI_CMD_22 0x1000 /* Clause 22 (default 45.) */ 55213346Sjmallett#define MV88E61XX_SMI_CMD_READ 0x0800 /* Read command. */ 56213346Sjmallett#define MV88E61XX_SMI_CMD_WRITE 0x0400 /* Write command. */ 57213346Sjmallett#define MV88E61XX_SMI_CMD_PHY(phy) (((phy) & 0x1f) << 5) 58213346Sjmallett#define MV88E61XX_SMI_CMD_REG(reg) ((reg) & 0x1f) 59213346Sjmallett 60213346Sjmallett#define MV88E61XX_SMI_REG_DAT 0x01 /* Indirect data register. */ 61213346Sjmallett 62213346Sjmallettstatic int cvm_oct_mv88e61xx_smi_read(struct ifnet *, int, int); 63213346Sjmallettstatic void cvm_oct_mv88e61xx_smi_write(struct ifnet *, int, int, int); 64213762Sjmallettstatic int cvm_oct_mv88e61xx_smi_wait(struct ifnet *); 65213346Sjmallett 66213346Sjmallettint 67213346Sjmallettcvm_oct_mv88e61xx_setup_device(struct ifnet *ifp) 68213346Sjmallett{ 69213346Sjmallett cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc; 70213346Sjmallett 71213762Sjmallett priv->mdio_read = cvm_oct_mv88e61xx_smi_read; 72213762Sjmallett priv->mdio_write = cvm_oct_mv88e61xx_smi_write; 73213762Sjmallett priv->phy_device = "mv88e61xxphy"; 74213346Sjmallett 75213346Sjmallett return (0); 76213346Sjmallett} 77213346Sjmallett 78213346Sjmallettstatic int 79213346Sjmallettcvm_oct_mv88e61xx_smi_read(struct ifnet *ifp, int phy_id, int location) 80213346Sjmallett{ 81213762Sjmallett cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc; 82213346Sjmallett int error; 83213346Sjmallett 84213762Sjmallett error = cvm_oct_mv88e61xx_smi_wait(ifp); 85213346Sjmallett if (error != 0) 86213346Sjmallett return (0); 87213346Sjmallett 88213762Sjmallett cvm_oct_mdio_write(ifp, priv->phy_id, MV88E61XX_SMI_REG_CMD, 89213346Sjmallett MV88E61XX_SMI_CMD_BUSY | MV88E61XX_SMI_CMD_22 | 90213346Sjmallett MV88E61XX_SMI_CMD_READ | MV88E61XX_SMI_CMD_PHY(phy_id) | 91213346Sjmallett MV88E61XX_SMI_CMD_REG(location)); 92213346Sjmallett 93213762Sjmallett error = cvm_oct_mv88e61xx_smi_wait(ifp); 94213346Sjmallett if (error != 0) 95213346Sjmallett return (0); 96213346Sjmallett 97213762Sjmallett return (cvm_oct_mdio_read(ifp, priv->phy_id, MV88E61XX_SMI_REG_DAT)); 98213346Sjmallett} 99213346Sjmallett 100213346Sjmallettstatic void 101213346Sjmallettcvm_oct_mv88e61xx_smi_write(struct ifnet *ifp, int phy_id, int location, int val) 102213346Sjmallett{ 103213762Sjmallett cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc; 104213762Sjmallett 105213762Sjmallett cvm_oct_mv88e61xx_smi_wait(ifp); 106213762Sjmallett cvm_oct_mdio_write(ifp, priv->phy_id, MV88E61XX_SMI_REG_DAT, val); 107213762Sjmallett cvm_oct_mdio_write(ifp, priv->phy_id, MV88E61XX_SMI_REG_CMD, 108213346Sjmallett MV88E61XX_SMI_CMD_BUSY | MV88E61XX_SMI_CMD_22 | 109213346Sjmallett MV88E61XX_SMI_CMD_WRITE | MV88E61XX_SMI_CMD_PHY(phy_id) | 110213346Sjmallett MV88E61XX_SMI_CMD_REG(location)); 111213762Sjmallett cvm_oct_mv88e61xx_smi_wait(ifp); 112213346Sjmallett} 113213346Sjmallett 114213346Sjmallettstatic int 115213762Sjmallettcvm_oct_mv88e61xx_smi_wait(struct ifnet *ifp) 116213346Sjmallett{ 117213762Sjmallett cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc; 118213346Sjmallett uint16_t cmd; 119213346Sjmallett unsigned i; 120213346Sjmallett 121213346Sjmallett for (i = 0; i < 10000; i++) { 122213762Sjmallett cmd = cvm_oct_mdio_read(ifp, priv->phy_id, MV88E61XX_SMI_REG_CMD); 123213346Sjmallett if ((cmd & MV88E61XX_SMI_CMD_BUSY) == 0) 124213346Sjmallett return (0); 125213346Sjmallett } 126213346Sjmallett return (ETIMEDOUT); 127213346Sjmallett} 128