19d3b47b92
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
131 lines
4.2 KiB
C
131 lines
4.2 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2010 Juli Mallett <jmallett@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Interface to the Marvell 88E61XX SMI/MDIO.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/endian.h>
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#include <sys/kernel.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <dev/mii/mii.h>
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#include <net/ethernet.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include "wrapper-cvmx-includes.h"
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#include "ethernet-headers.h"
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#define MV88E61XX_SMI_REG_CMD 0x00 /* Indirect command register. */
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#define MV88E61XX_SMI_CMD_BUSY 0x8000 /* Busy bit. */
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#define MV88E61XX_SMI_CMD_22 0x1000 /* Clause 22 (default 45.) */
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#define MV88E61XX_SMI_CMD_READ 0x0800 /* Read command. */
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#define MV88E61XX_SMI_CMD_WRITE 0x0400 /* Write command. */
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#define MV88E61XX_SMI_CMD_PHY(phy) (((phy) & 0x1f) << 5)
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#define MV88E61XX_SMI_CMD_REG(reg) ((reg) & 0x1f)
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#define MV88E61XX_SMI_REG_DAT 0x01 /* Indirect data register. */
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static int cvm_oct_mv88e61xx_smi_read(struct ifnet *, int, int);
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static void cvm_oct_mv88e61xx_smi_write(struct ifnet *, int, int, int);
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static int cvm_oct_mv88e61xx_smi_wait(struct ifnet *);
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int
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cvm_oct_mv88e61xx_setup_device(struct ifnet *ifp)
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{
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cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc;
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priv->mdio_read = cvm_oct_mv88e61xx_smi_read;
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priv->mdio_write = cvm_oct_mv88e61xx_smi_write;
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priv->phy_device = "mv88e61xxphy";
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return (0);
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}
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static int
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cvm_oct_mv88e61xx_smi_read(struct ifnet *ifp, int phy_id, int location)
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{
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cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc;
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int error;
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error = cvm_oct_mv88e61xx_smi_wait(ifp);
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if (error != 0)
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return (0);
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cvm_oct_mdio_write(ifp, priv->phy_id, MV88E61XX_SMI_REG_CMD,
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MV88E61XX_SMI_CMD_BUSY | MV88E61XX_SMI_CMD_22 |
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MV88E61XX_SMI_CMD_READ | MV88E61XX_SMI_CMD_PHY(phy_id) |
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MV88E61XX_SMI_CMD_REG(location));
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error = cvm_oct_mv88e61xx_smi_wait(ifp);
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if (error != 0)
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return (0);
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return (cvm_oct_mdio_read(ifp, priv->phy_id, MV88E61XX_SMI_REG_DAT));
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}
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static void
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cvm_oct_mv88e61xx_smi_write(struct ifnet *ifp, int phy_id, int location, int val)
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{
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cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc;
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cvm_oct_mv88e61xx_smi_wait(ifp);
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cvm_oct_mdio_write(ifp, priv->phy_id, MV88E61XX_SMI_REG_DAT, val);
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cvm_oct_mdio_write(ifp, priv->phy_id, MV88E61XX_SMI_REG_CMD,
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MV88E61XX_SMI_CMD_BUSY | MV88E61XX_SMI_CMD_22 |
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MV88E61XX_SMI_CMD_WRITE | MV88E61XX_SMI_CMD_PHY(phy_id) |
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MV88E61XX_SMI_CMD_REG(location));
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cvm_oct_mv88e61xx_smi_wait(ifp);
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}
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static int
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cvm_oct_mv88e61xx_smi_wait(struct ifnet *ifp)
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{
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cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc;
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uint16_t cmd;
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unsigned i;
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for (i = 0; i < 10000; i++) {
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cmd = cvm_oct_mdio_read(ifp, priv->phy_id, MV88E61XX_SMI_REG_CMD);
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if ((cmd & MV88E61XX_SMI_CMD_BUSY) == 0)
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return (0);
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}
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return (ETIMEDOUT);
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}
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