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o) Allow devices to override the MDIO read and write functions presented to

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the miibus attached to octe interfaces.
o) Add an SMI/MDIO interface to the MV88E61XX and use it for the switch PHY on
   the Lanner MR-320.  An actual driver for the switch PHY will come later.
   Note that for now it intercepts and fakes MII_BMSR reads to prevent the
   miibus from talking to anything but the switch itself.
This commit is contained in:
Juli Mallett 2010-10-02 05:43:17 +00:00
parent 41341ca726
commit a22b69b772
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=213346
9 changed files with 234 additions and 3 deletions
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5
sys/contrib/octeon-sdk/cvmx-helper-board.c
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@ -181,10 +181,11 @@ int cvmx_helper_board_get_mii_address(int ipd_port)
/* Private vendor-defined boards. */
#if defined(OCTEON_VENDOR_LANNER)
case CVMX_BOARD_TYPE_CUST_LANNER_MR320:
/* Port 0 is a Marvell 88E6161 switch, ports 1 and 2 are Marvell
88E1111 interfaces. */
switch (ipd_port) {
case 0:
/* XXX Switch PHY? */
return -1;
return 16;
case 1:
return 1;
case 2:

1
sys/mips/cavium/files.octeon1
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@ -21,6 +21,7 @@ mips/cavium/cryptocteon/cavium_crypto.c optional cryptocteon
mips/cavium/cryptocteon/cryptocteon.c optional cryptocteon
mips/cavium/octe/ethernet.c optional octe
mips/cavium/octe/ethernet-mv88e61xx.c optional octe octeon_vendor_lanner
mips/cavium/octe/ethernet-common.c optional octe
mips/cavium/octe/ethernet-mdio.c optional octe
mips/cavium/octe/ethernet-mem.c optional octe

2
sys/mips/cavium/octe/cavium-ethernet.h
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@ -72,6 +72,8 @@ typedef struct {
uint8_t mac[6];
int phy_id;
int (*mdio_read)(struct ifnet *, int, int);
void (*mdio_write)(struct ifnet *, int, int, int);
struct ifqueue tx_free_queue[16];

14
sys/mips/cavium/octe/ethernet-common.c
View File

@ -266,6 +266,20 @@ int cvm_oct_common_init(struct ifnet *ifp)
memset(ifp->get_stats(ifp), 0, sizeof(struct ifnet_stats));
#endif
/*
* Do any last-minute board-specific initialization.
*/
switch (cvmx_sysinfo_get()->board_type) {
#if defined(OCTEON_VENDOR_LANNER)
case CVMX_BOARD_TYPE_CUST_LANNER_MR320:
if (priv->phy_id == 16)
cvm_oct_mv88e61xx_setup_device(ifp);
break;
#endif
default:
break;
}
device_attach(priv->dev);
return 0;

7
sys/mips/cavium/octe/ethernet-headers.h
View File

@ -40,4 +40,11 @@ AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS OR W
#include "ethernet-tx.h"
#include "ethernet-util.h"
/*
* Any board- or vendor-specific includes.
*/
#ifdef OCTEON_VENDOR_LANNER
#include "ethernet-mv88e61xx.h"
#endif
#endif

2
sys/mips/cavium/octe/ethernet-mdio.c
View File

@ -132,6 +132,8 @@ int cvm_oct_mdio_setup_device(struct ifnet *ifp)
cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc;
priv->phy_id = cvmx_helper_board_get_mii_address(priv->port);
priv->mdio_read = NULL;
priv->mdio_write = NULL;
return 0;
}

151
sys/mips/cavium/octe/ethernet-mv88e61xx.c Normal file
View File

@ -0,0 +1,151 @@
/*-
* Copyright (c) 2010 Juli Mallett <jmallett@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* Interface to the Marvell 88E61XX SMI/MDIO.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/endian.h>
#include <sys/kernel.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <dev/mii/mii.h>
#include <net/ethernet.h>
#include <net/if.h>
#include "wrapper-cvmx-includes.h"
#include "ethernet-headers.h"
#define MV88E61XX_SMI_PHY_SW 0x10 /* Switch PHY. */
#define MV88E61XX_SMI_REG_CMD 0x00 /* Indirect command register. */
#define MV88E61XX_SMI_CMD_BUSY 0x8000 /* Busy bit. */
#define MV88E61XX_SMI_CMD_22 0x1000 /* Clause 22 (default 45.) */
#define MV88E61XX_SMI_CMD_READ 0x0800 /* Read command. */
#define MV88E61XX_SMI_CMD_WRITE 0x0400 /* Write command. */
#define MV88E61XX_SMI_CMD_PHY(phy) (((phy) & 0x1f) << 5)
#define MV88E61XX_SMI_CMD_REG(reg) ((reg) & 0x1f)
#define MV88E61XX_SMI_REG_DAT 0x01 /* Indirect data register. */
static int cvm_oct_mv88e61xx_mdio_read(struct ifnet *, int, int);
static void cvm_oct_mv88e61xx_mdio_write(struct ifnet *, int, int, int);
static int cvm_oct_mv88e61xx_smi_read(struct ifnet *, int, int);
static void cvm_oct_mv88e61xx_smi_write(struct ifnet *, int, int, int);
static int cvm_oct_mv88e61xx_smi_wait(struct ifnet *, int);
int
cvm_oct_mv88e61xx_setup_device(struct ifnet *ifp)
{
cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc;
priv->mdio_read = cvm_oct_mv88e61xx_mdio_read;
priv->mdio_write = cvm_oct_mv88e61xx_mdio_write;
return (0);
}
static int
cvm_oct_mv88e61xx_mdio_read(struct ifnet *ifp, int phy_id, int location)
{
/*
* Intercept reads of MII_BMSR. The miibus uses this to determine
* PHY presence and we only want it to look for a PHY attachment
* for the switch PHY itself. The PHY driver will talk to all of
* the other ports as need be.
*/
switch (location) {
case MII_BMSR:
if (phy_id != MV88E61XX_SMI_PHY_SW)
return (0);
return (BMSR_EXTSTAT | BMSR_ACOMP | BMSR_LINK);
default:
return (cvm_oct_mv88e61xx_smi_read(ifp, phy_id, location));
}
}
static void
cvm_oct_mv88e61xx_mdio_write(struct ifnet *ifp, int phy_id, int location, int val)
{
return (cvm_oct_mv88e61xx_smi_write(ifp, phy_id, location, val));
}
static int
cvm_oct_mv88e61xx_smi_read(struct ifnet *ifp, int phy_id, int location)
{
int error;
error = cvm_oct_mv88e61xx_smi_wait(ifp, phy_id);
if (error != 0)
return (0);
cvm_oct_mdio_write(ifp, phy_id, MV88E61XX_SMI_REG_CMD,
MV88E61XX_SMI_CMD_BUSY | MV88E61XX_SMI_CMD_22 |
MV88E61XX_SMI_CMD_READ | MV88E61XX_SMI_CMD_PHY(phy_id) |
MV88E61XX_SMI_CMD_REG(location));
error = cvm_oct_mv88e61xx_smi_wait(ifp, phy_id);
if (error != 0)
return (0);
return (cvm_oct_mdio_read(ifp, phy_id, MV88E61XX_SMI_REG_DAT));
}
static void
cvm_oct_mv88e61xx_smi_write(struct ifnet *ifp, int phy_id, int location, int val)
{
cvm_oct_mv88e61xx_smi_wait(ifp, phy_id);
cvm_oct_mdio_write(ifp, phy_id, MV88E61XX_SMI_REG_DAT, val);
cvm_oct_mdio_write(ifp, phy_id, MV88E61XX_SMI_REG_CMD,
MV88E61XX_SMI_CMD_BUSY | MV88E61XX_SMI_CMD_22 |
MV88E61XX_SMI_CMD_WRITE | MV88E61XX_SMI_CMD_PHY(phy_id) |
MV88E61XX_SMI_CMD_REG(location));
cvm_oct_mv88e61xx_smi_wait(ifp, phy_id);
}
static int
cvm_oct_mv88e61xx_smi_wait(struct ifnet *ifp, int phy_id)
{
uint16_t cmd;
unsigned i;
for (i = 0; i < 10000; i++) {
cmd = cvm_oct_mdio_read(ifp, phy_id, MV88E61XX_SMI_REG_CMD);
if ((cmd & MV88E61XX_SMI_CMD_BUSY) == 0)
return (0);
}
return (ETIMEDOUT);
}

34
sys/mips/cavium/octe/ethernet-mv88e61xx.h Normal file
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@ -0,0 +1,34 @@
/*-
* Copyright (c) 2010 Juli Mallett <jmallett@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _CAVIUM_OCTE_ETHERNET_MV88E61XX_H_
#define _CAVIUM_OCTE_ETHERNET_MV88E61XX_H_
int cvm_oct_mv88e61xx_setup_device(struct ifnet *ifp);
#endif /* !_CAVIUM_OCTE_ETHERNET_MV88E61XX_H_ */

21
sys/mips/cavium/octe/octe.c
View File

@ -224,6 +224,15 @@ octe_miibus_readreg(device_t dev, int phy, int reg)
priv = device_get_softc(dev);
/*
* Try interface-specific MII routine.
*/
if (priv->mdio_read != NULL)
return (priv->mdio_read(priv->ifp, phy, reg));
/*
* Try generic MII routine.
*/
if (phy != priv->phy_id)
return (0);
@ -237,9 +246,19 @@ octe_miibus_writereg(device_t dev, int phy, int reg, int val)
priv = device_get_softc(dev);
/*
* Try interface-specific MII routine.
*/
if (priv->mdio_write != NULL) {
priv->mdio_write(priv->ifp, phy, reg, val);
return (0);
}
/*
* Try generic MII routine.
*/
KASSERT(phy == priv->phy_id,
("write to phy %u but our phy is %u", phy, priv->phy_id));
cvm_oct_mdio_write(priv->ifp, phy, reg, val);
return (0);