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Add stub driver for ADM6996F switches (configured through MII) The driver currently uses a hardcoded VLAN mapping and has no configuration yet Tested on Accton MR3202a 

SVN-Revision: 10869
lede-17.01
Felix Fietkau 2008-04-20 02:53:04 +00:00
parent 27d341022c
commit a323a7bf2a
6 changed files with 333 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
target/linux/atheros/config-2.6.23
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@ -1,5 +1,6 @@
CONFIG_32BIT=y
# CONFIG_64BIT is not set
CONFIG_ADM6996_PHY=y
CONFIG_AR2313=y
# CONFIG_ARCH_HAS_ILOG2_U32 is not set
# CONFIG_ARCH_HAS_ILOG2_U64 is not set

1
target/linux/generic-2.6/config-2.6.23
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@ -5,6 +5,7 @@
# CONFIG_ACORN_PARTITION is not set
# CONFIG_ADAPTEC_STARFIRE is not set
# CONFIG_ADFS_FS is not set
# CONFIG_ADM6996_PHY is not set
# CONFIG_AFFS_FS is not set
# CONFIG_AFS_FS is not set
# CONFIG_AF_RXRPC is not set

170
target/linux/generic-2.6/files/drivers/net/phy/adm6996.c Normal file
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@ -0,0 +1,170 @@
/*
* ADM6996 switch driver
*
* Copyright (c) 2008 Felix Fietkau <nbd@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License v2 as published by the
* Free Software Foundation
*/
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/unistd.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/spinlock.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/mii.h>
#include <linux/ethtool.h>
#include <linux/phy.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
#include "adm6996.h"
MODULE_DESCRIPTION("Infineon ADM6996 Switch");
MODULE_AUTHOR("Felix Fietkau");
MODULE_LICENSE("GPL");
struct adm6996_priv {
/* use abstraction for regops, we want to add gpio support in the future */
u16 (*read)(struct phy_device *phydev, enum admreg reg);
void (*write)(struct phy_device *phydev, enum admreg reg, u16 val);
};
#define to_adm(_phy) ((struct adm6996_priv *) (_phy)->priv)
static inline u16
r16(struct phy_device *pdev, enum admreg reg)
{
return to_adm(pdev)->read(pdev, reg);
}
static inline void
w16(struct phy_device *pdev, enum admreg reg, u16 val)
{
to_adm(pdev)->write(pdev, reg, val);
}
static u16
adm6996_read_mii_reg(struct phy_device *phydev, enum admreg reg)
{
return phydev->bus->read(phydev->bus, PHYADDR(reg));
}
static void
adm6996_write_mii_reg(struct phy_device *phydev, enum admreg reg, u16 val)
{
phydev->bus->write(phydev->bus, PHYADDR(reg), val);
}
static int adm6996_config_init(struct phy_device *pdev)
{
int i;
printk("%s: ADM6996 PHY driver attached.\n", pdev->attached_dev->name);
pdev->supported = ADVERTISED_100baseT_Full;
pdev->advertising = ADVERTISED_100baseT_Full;
/* initialize port and vlan settings */
for (i = 0; i < ADM_PHY_PORTS; i++) {
w16(pdev, adm_portcfg[i], ADM_PORTCFG_INIT |
ADM_PORTCFG_PVID((i == ADM_WAN_PORT) ? 1 : 0));
}
w16(pdev, adm_portcfg[5], ADM_PORTCFG_CPU);
/* reset all ports */
for (i = 0; i < ADM_PHY_PORTS; i++) {
w16(pdev, ADM_PHY_PORT(i), ADM_PHYCFG_INIT);
}
return 0;
}
static int adm6996_read_status(struct phy_device *phydev)
{
phydev->speed = SPEED_100;
phydev->duplex = DUPLEX_FULL;
phydev->state = PHY_UP;
return 0;
}
static int adm6996_config_aneg(struct phy_device *phydev)
{
return 0;
}
static int adm6996_probe(struct phy_device *pdev)
{
struct adm6996_priv *priv;
priv = kzalloc(sizeof(struct adm6996_priv), GFP_KERNEL);
if (priv == NULL)
return -ENOMEM;
priv->read = adm6996_read_mii_reg;
priv->write = adm6996_write_mii_reg;
pdev->priv = priv;
return 0;
}
static void adm6996_remove(struct phy_device *pdev)
{
kfree(pdev->priv);
}
static bool adm6996_detect(struct mii_bus *bus, int addr)
{
u16 reg;
/* we only attach to phy id 0 */
if (addr != 0)
return false;
/* look for the switch on the bus */
reg = bus->read(bus, PHYADDR(ADM_SIG0)) & ADM_SIG0_MASK;
if (reg != ADM_SIG0_VAL)
return false;
reg = bus->read(bus, PHYADDR(ADM_SIG1)) & ADM_SIG1_MASK;
if (reg != ADM_SIG1_VAL)
return false;
return true;
}
static struct phy_driver adm6996_driver = {
.name = "Infineon ADM6996",
.features = PHY_BASIC_FEATURES,
.detect = adm6996_detect,
.probe = adm6996_probe,
.remove = adm6996_remove,
.config_init = &adm6996_config_init,
.config_aneg = &adm6996_config_aneg,
.read_status = &adm6996_read_status,
.driver = { .owner = THIS_MODULE,},
};
static int __init adm6996_init(void)
{
return phy_driver_register(&adm6996_driver);
}
static void __exit adm6996_exit(void)
{
phy_driver_unregister(&adm6996_driver);
}
module_init(adm6996_init);
module_exit(adm6996_exit);

105
target/linux/generic-2.6/files/drivers/net/phy/adm6996.h Normal file
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@ -0,0 +1,105 @@
/*
* ADM6996 switch driver
*
* Copyright (c) 2008 Felix Fietkau <nbd@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License v2 as published by the
* Free Software Foundation
*/
#ifndef __ADM6996_H
#define __ADM6996_H
#define ADM_PHY_PORTS 5
#define ADM_CPU_PORT 5
#define ADM_WAN_PORT 0 /* FIXME: dynamic ? */
enum admreg {
ADM_EEPROM_BASE = 0x0,
ADM_P0_CFG = ADM_EEPROM_BASE + 1,
ADM_P1_CFG = ADM_EEPROM_BASE + 3,
ADM_P2_CFG = ADM_EEPROM_BASE + 5,
ADM_P3_CFG = ADM_EEPROM_BASE + 7,
ADM_P4_CFG = ADM_EEPROM_BASE + 8,
ADM_P5_CFG = ADM_EEPROM_BASE + 9,
ADM_EEPROM_EXT_BASE = 0x40,
ADM_COUNTER_BASE = 0xa0,
ADM_SIG0 = ADM_COUNTER_BASE + 0,
ADM_SIG1 = ADM_COUNTER_BASE + 1,
ADM_PHY_BASE = 0x200,
#define ADM_PHY_PORT(n) (ADM_PHY_BASE + (0x20 * n))
};
/* Chip identification patterns */
#define ADM_SIG0_MASK 0xfff0
#define ADM_SIG0_VAL 0x1020
#define ADM_SIG1_MASK 0xffff
#define ADM_SIG1_VAL 0x0007
enum {
ADM_PHYCFG_COLTST = (1 << 7), /* Enable collision test */
ADM_PHYCFG_DPLX = (1 << 8), /* Enable full duplex */
ADM_PHYCFG_ANEN_RST = (1 << 9), /* Restart auto negotiation (self clear) */
ADM_PHYCFG_ISO = (1 << 10), /* Isolate PHY */
ADM_PHYCFG_PDN = (1 << 11), /* Power down PHY */
ADM_PHYCFG_ANEN = (1 << 12), /* Enable auto negotiation */
ADM_PHYCFG_SPEED_100 = (1 << 13), /* Enable 100 Mbit/s */
ADM_PHYCFG_LPBK = (1 << 14), /* Enable loopback operation */
ADM_PHYCFG_RST = (1 << 15), /* Reset the port (self clear) */
ADM_PHYCFG_INIT = (
ADM_PHYCFG_RST |
ADM_PHYCFG_SPEED_100 |
ADM_PHYCFG_ANEN |
ADM_PHYCFG_ANEN_RST
)
};
enum {
ADM_PORTCFG_FC = (1 << 0), /* Enable 802.x flow control */
ADM_PORTCFG_AN = (1 << 1), /* Enable auto-negotiation */
ADM_PORTCFG_SPEED_100 = (1 << 2), /* Enable 100 Mbit/s */
ADM_PORTCFG_DPLX = (1 << 3), /* Enable full duplex */
ADM_PORTCFG_OT = (1 << 4), /* Output tagged packets */
ADM_PORTCFG_PD = (1 << 5), /* Port disable */
ADM_PORTCFG_TV_PRIO = (1 << 6), /* 0 = VLAN based priority
* 1 = TOS based priority */
ADM_PORTCFG_PPE = (1 << 7), /* Port based priority enable */
ADM_PORTCFG_PP_S = (1 << 8), /* Port based priority, 2 bits */
ADM_PORTCFG_PVID_BASE = (1 << 10), /* Primary VLAN id, 4 bits */
ADM_PORTCFG_FSE = (1 << 14), /* Fx select enable */
ADM_PORTCFG_CAM = (1 << 15), /* Crossover Auto MDIX */
ADM_PORTCFG_INIT = (
ADM_PORTCFG_FC |
ADM_PORTCFG_AN |
ADM_PORTCFG_SPEED_100 |
ADM_PORTCFG_DPLX |
ADM_PORTCFG_CAM
),
ADM_PORTCFG_CPU = (
ADM_PORTCFG_FC |
ADM_PORTCFG_SPEED_100 |
ADM_PORTCFG_OT |
ADM_PORTCFG_DPLX
),
};
#define ADM_PORTCFG_PPID(N) ((n & 0x3) << 8)
#define ADM_PORTCFG_PVID(n) ((n & 0xf) << 10)
static const u8 adm_portcfg[] = {
[0] = ADM_P0_CFG,
[1] = ADM_P1_CFG,
[2] = ADM_P2_CFG,
[3] = ADM_P3_CFG,
[4] = ADM_P4_CFG,
[5] = ADM_P5_CFG,
};
/*
* Split the register address in phy id and register
* it will get combined again by the mdio bus op
*/
#define PHYADDR(_reg) ((_reg >> 5) & 0xff), (_reg & 0x1f)
#endif

30
target/linux/generic-2.6/patches-2.6.23/610-phy_detect.patch Normal file
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@ -0,0 +1,30 @@
Index: linux-2.6.23.16/drivers/net/phy/mdio_bus.c
===================================================================
--- linux-2.6.23.16.orig/drivers/net/phy/mdio_bus.c 2008-02-11 07:06:32.000000000 +0100
+++ linux-2.6.23.16/drivers/net/phy/mdio_bus.c 2008-04-20 01:55:46.000000000 +0200
@@ -131,6 +131,9 @@
struct phy_device *phydev = to_phy_device(dev);
struct phy_driver *phydrv = to_phy_driver(drv);
+ if (phydrv->detect)
+ return (phydrv->detect(phydev->bus, phydev->addr));
+
return ((phydrv->phy_id & phydrv->phy_id_mask) ==
(phydev->phy_id & phydrv->phy_id_mask));
}
Index: linux-2.6.23.16/include/linux/phy.h
===================================================================
--- linux-2.6.23.16.orig/include/linux/phy.h 2008-04-20 00:36:18.000000000 +0200
+++ linux-2.6.23.16/include/linux/phy.h 2008-04-20 01:55:04.000000000 +0200
@@ -319,6 +319,11 @@
u32 features;
u32 flags;
+ /* Called during discovery to test if the
+ * device can attach to the bus, even if
+ * phy id and mask do not match */
+ bool (*detect)(struct mii_bus *bus, int addr);
+
/* Called to initialize the PHY,
* including after a reset */
int (*config_init)(struct phy_device *phydev);

26
target/linux/generic-2.6/patches-2.6.23/620-phy_adm6996.patch Normal file
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@ -0,0 +1,26 @@
Index: linux-2.6.23.16/drivers/net/phy/Kconfig
===================================================================
--- linux-2.6.23.16.orig/drivers/net/phy/Kconfig 2008-04-20 04:40:22.000000000 +0200
+++ linux-2.6.23.16/drivers/net/phy/Kconfig 2008-04-20 04:40:32.000000000 +0200
@@ -60,6 +60,11 @@
---help---
Currently supports the IP175C PHY.
+config ADM6996_PHY
+ tristate "Driver for ADM6996 switches"
+ ---help---
+ Currently supports the ADM6996F switch
+
config FIXED_PHY
tristate "Drivers for PHY emulation on fixed speed/link"
---help---
Index: linux-2.6.23.16/drivers/net/phy/Makefile
===================================================================
--- linux-2.6.23.16.orig/drivers/net/phy/Makefile 2008-04-20 04:40:22.000000000 +0200
+++ linux-2.6.23.16/drivers/net/phy/Makefile 2008-04-20 04:40:32.000000000 +0200
@@ -12,4 +12,5 @@
obj-$(CONFIG_VITESSE_PHY) += vitesse.o
obj-$(CONFIG_BROADCOM_PHY) += broadcom.o
obj-$(CONFIG_ICPLUS_PHY) += icplus.o
+obj-$(CONFIG_ADM6996_PHY) += adm6996.o
obj-$(CONFIG_FIXED_PHY) += fixed.o