diff options
Diffstat (limited to 'target/linux/generic/files/drivers/net/phy/adm6996.c')
| -rw-r--r-- | target/linux/generic/files/drivers/net/phy/adm6996.c | 616 |
1 files changed, 591 insertions, 25 deletions
diff --git a/target/linux/generic/files/drivers/net/phy/adm6996.c b/target/linux/generic/files/drivers/net/phy/adm6996.c index bc40be067..347c12970 100644 --- a/target/linux/generic/files/drivers/net/phy/adm6996.c +++ b/target/linux/generic/files/drivers/net/phy/adm6996.c @@ -1,12 +1,17 @@ /* * ADM6996 switch driver * + * swconfig interface based on ar8216.c + * * Copyright (c) 2008 Felix Fietkau <nbd@openwrt.org> + * VLAN support Copyright (c) 2010, 2011 Peter Lebbing <peter@digitalbrains.com> * * 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 */ + +/*#define DEBUG 1*/ #include <linux/kernel.h> #include <linux/string.h> #include <linux/errno.h> @@ -24,6 +29,7 @@ #include <linux/mii.h> #include <linux/ethtool.h> #include <linux/phy.h> +#include <linux/switch.h> #include <asm/io.h> #include <asm/irq.h> @@ -31,28 +37,59 @@ #include "adm6996.h" MODULE_DESCRIPTION("Infineon ADM6996 Switch"); -MODULE_AUTHOR("Felix Fietkau"); +MODULE_AUTHOR("Felix Fietkau, Peter Lebbing <peter@digitalbrains.com>"); MODULE_LICENSE("GPL"); +enum adm6996_model { + ADM6996FC, + ADM6996M +}; + +static const char * const adm6996_model_name[] = +{ + "ADM6996FC", + "ADM6996M" +}; + struct adm6996_priv { + struct switch_dev dev; + struct phy_device *phydev; + + enum adm6996_model model; + + bool enable_vlan; + bool vlan_enabled; /* Current hardware state */ + +#ifdef DEBUG + u16 addr; /* Debugging: register address to operate on */ +#endif + + u16 pvid[ADM_NUM_PORTS]; /* Primary VLAN ID */ + + u16 vlan_id[ADM_NUM_VLANS]; + u8 vlan_table[ADM_NUM_VLANS]; /* bitmap, 1 = port is member */ + u8 vlan_tagged[ADM_NUM_VLANS]; /* bitmap, 1 = tagged member */ + + struct mutex reg_mutex; + /* 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) - +#define to_adm(_dev) container_of(_dev, struct adm6996_priv, dev) +#define phy_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); + return phy_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); + phy_to_adm(pdev)->write(pdev, reg, val); } @@ -68,30 +105,555 @@ adm6996_write_mii_reg(struct phy_device *phydev, enum admreg reg, u16 val) phydev->bus->write(phydev->bus, PHYADDR(reg), val); } +static int +adm6996_set_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, + struct switch_val *val) +{ + struct adm6996_priv *priv = to_adm(dev); -static int adm6996_config_init(struct phy_device *pdev) + if (val->value.i > 1) + return -EINVAL; + + priv->enable_vlan = val->value.i; + + return 0; +}; + +static int +adm6996_get_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, + struct switch_val *val) { + struct adm6996_priv *priv = to_adm(dev); + + val->value.i = priv->enable_vlan; + + return 0; +}; + +#ifdef DEBUG + +static int +adm6996_set_addr(struct switch_dev *dev, const struct switch_attr *attr, + struct switch_val *val) +{ + struct adm6996_priv *priv = to_adm(dev); + + if (val->value.i > 1023) + return -EINVAL; + + priv->addr = val->value.i; + + return 0; +}; + +static int +adm6996_get_addr(struct switch_dev *dev, const struct switch_attr *attr, + struct switch_val *val) +{ + struct adm6996_priv *priv = to_adm(dev); + + val->value.i = priv->addr; + + return 0; +}; + +static int +adm6996_set_data(struct switch_dev *dev, const struct switch_attr *attr, + struct switch_val *val) +{ + struct adm6996_priv *priv = to_adm(dev); + + if (val->value.i > 65535) + return -EINVAL; + + w16(priv->phydev, priv->addr, val->value.i); + + return 0; +}; + +static int +adm6996_get_data(struct switch_dev *dev, const struct switch_attr *attr, + struct switch_val *val) +{ + struct adm6996_priv *priv = to_adm(dev); + + val->value.i = r16(priv->phydev, priv->addr); + + return 0; +}; + +#endif /* def DEBUG */ + +static int +adm6996_set_pvid(struct switch_dev *dev, int port, int vlan) +{ + struct adm6996_priv *priv = to_adm(dev); + + dev_dbg (&priv->phydev->dev, "set_pvid port %d vlan %d\n", port + , vlan); + + if (vlan > ADM_VLAN_MAX_ID) + return -EINVAL; + + priv->pvid[port] = vlan; + + return 0; +} + +static int +adm6996_get_pvid(struct switch_dev *dev, int port, int *vlan) +{ + struct adm6996_priv *priv = to_adm(dev); + + dev_dbg (&priv->phydev->dev, "get_pvid port %d\n", port); + *vlan = priv->pvid[port]; + + return 0; +} + +static int +adm6996_set_vid(struct switch_dev *dev, const struct switch_attr *attr, + struct switch_val *val) +{ + struct adm6996_priv *priv = to_adm(dev); + + dev_dbg (&priv->phydev->dev, "set_vid port %d vid %d\n", val->port_vlan, + val->value.i); + + if (val->value.i > ADM_VLAN_MAX_ID) + return -EINVAL; + + priv->vlan_id[val->port_vlan] = val->value.i; + + return 0; +}; + +static int +adm6996_get_vid(struct switch_dev *dev, const struct switch_attr *attr, + struct switch_val *val) +{ + struct adm6996_priv *priv = to_adm(dev); + + dev_dbg (&priv->phydev->dev, "get_vid port %d\n", val->port_vlan); + + val->value.i = priv->vlan_id[val->port_vlan]; + + return 0; +}; + +static int +adm6996_get_ports(struct switch_dev *dev, struct switch_val *val) +{ + struct adm6996_priv *priv = to_adm(dev); + u8 ports = priv->vlan_table[val->port_vlan]; + u8 tagged = priv->vlan_tagged[val->port_vlan]; int i; - printk("%s: ADM6996 PHY driver attached.\n", pdev->attached_dev->name); - pdev->supported = ADVERTISED_100baseT_Full; - pdev->advertising = ADVERTISED_100baseT_Full; + dev_dbg (&priv->phydev->dev, "get_ports port_vlan %d\n", + val->port_vlan); + + val->len = 0; + + for (i = 0; i < ADM_NUM_PORTS; i++) { + struct switch_port *p; + + if (!(ports & (1 << i))) + continue; + + p = &val->value.ports[val->len++]; + p->id = i; + if (tagged & (1 << i)) + p->flags = (1 << SWITCH_PORT_FLAG_TAGGED); + else + p->flags = 0; + } + + return 0; +}; + +static int +adm6996_set_ports(struct switch_dev *dev, struct switch_val *val) +{ + struct adm6996_priv *priv = to_adm(dev); + u8 *ports = &priv->vlan_table[val->port_vlan]; + u8 *tagged = &priv->vlan_tagged[val->port_vlan]; + int i; + + dev_dbg (&priv->phydev->dev, "set_ports port_vlan %d ports", + val->port_vlan); + + *ports = 0; + *tagged = 0; + + for (i = 0; i < val->len; i++) { + struct switch_port *p = &val->value.ports[i]; + +#ifdef DEBUG + pr_cont(" %d%s", p->id, + ((p->flags & (1 << SWITCH_PORT_FLAG_TAGGED)) ? "T" : + "")); +#endif + + if (p->flags & (1 << SWITCH_PORT_FLAG_TAGGED)) + *tagged |= (1 << p->id); + + *ports |= (1 << p->id); + } + +#ifdef DEBUG + pr_cont("\n"); +#endif + + return 0; +}; + +/* + * Precondition: reg_mutex must be held + */ +static void +adm6996_enable_vlan(struct adm6996_priv *priv) +{ + u16 reg; + + reg = r16(priv->phydev, ADM_OTBE_P2_PVID); + reg &= ~(ADM_OTBE_MASK); + w16(priv->phydev, ADM_OTBE_P2_PVID, reg); + reg = r16(priv->phydev, ADM_IFNTE); + reg &= ~(ADM_IFNTE_MASK); + w16(priv->phydev, ADM_IFNTE, reg); + reg = r16(priv->phydev, ADM_VID_CHECK); + reg |= ADM_VID_CHECK_MASK; + w16(priv->phydev, ADM_VID_CHECK, reg); + reg = r16(priv->phydev, ADM_SYSC0); + reg |= ADM_NTTE; + reg &= ~(ADM_RVID1); + w16(priv->phydev, ADM_SYSC0, reg); + reg = r16(priv->phydev, ADM_SYSC3); + reg |= ADM_TBV; + w16(priv->phydev, ADM_SYSC3, reg); + +}; + +/* + * Disable VLANs + * + * Sets VLAN mapping for port-based VLAN with all ports connected to + * eachother (this is also the power-on default). + * + * Precondition: reg_mutex must be held + */ +static void +adm6996_disable_vlan(struct adm6996_priv *priv) +{ + u16 reg; + int i; + + for (i = 0; i < ADM_NUM_PORTS; i++) { + reg = ADM_VLAN_FILT_MEMBER_MASK; + w16(priv->phydev, ADM_VLAN_FILT_L(i), reg); + reg = ADM_VLAN_FILT_VALID | ADM_VLAN_FILT_VID(1); + w16(priv->phydev, ADM_VLAN_FILT_H(i), reg); + } + + reg = r16(priv->phydev, ADM_OTBE_P2_PVID); + reg |= ADM_OTBE_MASK; + w16(priv->phydev, ADM_OTBE_P2_PVID, reg); + reg = r16(priv->phydev, ADM_IFNTE); + reg |= ADM_IFNTE_MASK; + w16(priv->phydev, ADM_IFNTE, reg); + reg = r16(priv->phydev, ADM_VID_CHECK); + reg &= ~(ADM_VID_CHECK_MASK); + w16(priv->phydev, ADM_VID_CHECK, reg); + reg = r16(priv->phydev, ADM_SYSC0); + reg &= ~(ADM_NTTE); + reg |= ADM_RVID1; + w16(priv->phydev, ADM_SYSC0, reg); + reg = r16(priv->phydev, ADM_SYSC3); + reg &= ~(ADM_TBV); + w16(priv->phydev, ADM_SYSC3, reg); +} + +/* + * Precondition: reg_mutex must be held + */ +static void +adm6996_apply_port_pvids(struct adm6996_priv *priv) +{ + u16 reg; + int i; + + for (i = 0; i < ADM_NUM_PORTS; i++) { + reg = r16(priv->phydev, adm_portcfg[i]); + reg &= ~(ADM_PORTCFG_PVID_MASK); + reg |= ADM_PORTCFG_PVID(priv->pvid[i]); + w16(priv->phydev, adm_portcfg[i], reg); + } + + w16(priv->phydev, ADM_P0_PVID, ADM_P0_PVID_VAL(priv->pvid[0])); + w16(priv->phydev, ADM_P1_PVID, ADM_P1_PVID_VAL(priv->pvid[1])); + reg = r16(priv->phydev, ADM_OTBE_P2_PVID); + reg &= ~(ADM_P2_PVID_MASK); + reg |= ADM_P2_PVID_VAL(priv->pvid[2]); + w16(priv->phydev, ADM_OTBE_P2_PVID, reg); + reg = ADM_P3_PVID_VAL(priv->pvid[3]); + reg |= ADM_P4_PVID_VAL(priv->pvid[4]); + w16(priv->phydev, ADM_P3_P4_PVID, reg); + w16(priv->phydev, ADM_P5_PVID, ADM_P5_PVID_VAL(priv->pvid[5])); +} + +/* + * Precondition: reg_mutex must be held + */ +static void +adm6996_apply_vlan_filters(struct adm6996_priv *priv) +{ + u8 ports, tagged; + u16 vid, reg; + int i; + + for (i = 0; i < ADM_NUM_VLANS; i++) { + vid = priv->vlan_id[i]; + ports = priv->vlan_table[i]; + tagged = priv->vlan_tagged[i]; + + if (ports == 0) { + /* Disable VLAN entry */ + w16(priv->phydev, ADM_VLAN_FILT_H(i), 0); + w16(priv->phydev, ADM_VLAN_FILT_L(i), 0); + continue; + } + + reg = ADM_VLAN_FILT_MEMBER(ports); + reg |= ADM_VLAN_FILT_TAGGED(tagged); + w16(priv->phydev, ADM_VLAN_FILT_L(i), reg); + reg = ADM_VLAN_FILT_VALID | ADM_VLAN_FILT_VID(vid); + w16(priv->phydev, ADM_VLAN_FILT_H(i), reg); + } +} + +static int +adm6996_hw_apply(struct switch_dev *dev) +{ + struct adm6996_priv *priv = to_adm(dev); + + dev_dbg(&priv->phydev->dev, "hw_apply\n"); + + mutex_lock(&priv->reg_mutex); + + if (!priv->enable_vlan) { + if (priv->vlan_enabled) { + adm6996_disable_vlan(priv); + priv->vlan_enabled = 0; + } + goto out; + } + + if (!priv->vlan_enabled) { + adm6996_enable_vlan(priv); + priv->vlan_enabled = 1; + } + + adm6996_apply_port_pvids(priv); + adm6996_apply_vlan_filters(priv); + +out: + mutex_unlock(&priv->reg_mutex); + + return 0; +} + +/* + * Reset the switch + * + * The ADM6996 can't do a software-initiated reset, so we just initialise the + * registers we support in this driver. + * + * Precondition: reg_mutex must be held + */ +static void +adm6996_perform_reset (struct adm6996_priv *priv) +{ + int i; /* 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)); + for (i = 0; i < ADM_NUM_PORTS - 1; i++) { + w16(priv->phydev, adm_portcfg[i], ADM_PORTCFG_INIT | + ADM_PORTCFG_PVID(0)); } - w16(pdev, adm_portcfg[5], ADM_PORTCFG_CPU); + w16(priv->phydev, adm_portcfg[5], ADM_PORTCFG_CPU); - /* reset all ports */ + /* reset all PHY ports */ for (i = 0; i < ADM_PHY_PORTS; i++) { - w16(pdev, ADM_PHY_PORT(i), ADM_PHYCFG_INIT); + w16(priv->phydev, ADM_PHY_PORT(i), ADM_PHYCFG_INIT); + } + + priv->enable_vlan = 0; + priv->vlan_enabled = 0; + + for (i = 0; i < ADM_NUM_PORTS; i++) { + priv->pvid[i] = 0; + } + + for (i = 0; i < ADM_NUM_VLANS; i++) { + priv->vlan_id[i] = i; + priv->vlan_table[i] = 0; + priv->vlan_tagged[i] = 0; + } + + if (priv->model == ADM6996M) { + /* Clear VLAN priority map so prio's are unused */ + w16 (priv->phydev, ADM_VLAN_PRIOMAP, 0); + + adm6996_disable_vlan(priv); + adm6996_apply_port_pvids(priv); + } +} + +static int +adm6996_reset_switch(struct switch_dev *dev) +{ + struct adm6996_priv *priv = to_adm(dev); + + dev_dbg (&priv->phydev->dev, "reset\n"); + mutex_lock(&priv->reg_mutex); + adm6996_perform_reset (priv); + mutex_unlock(&priv->reg_mutex); + return 0; +} + +static struct switch_attr adm6996_globals[] = { + { + .type = SWITCH_TYPE_INT, + .name = "enable_vlan", + .description = "Enable VLANs", + .set = adm6996_set_enable_vlan, + .get = adm6996_get_enable_vlan, + }, +#ifdef DEBUG + { + .type = SWITCH_TYPE_INT, + .name = "addr", + .description = + "Direct register access: set register address (0 - 1023)", + .set = adm6996_set_addr, + .get = adm6996_get_addr, + }, + { + .type = SWITCH_TYPE_INT, + .name = "data", + .description = + "Direct register access: read/write to register (0 - 65535)", + .set = adm6996_set_data, + .get = adm6996_get_data, + }, +#endif /* def DEBUG */ +}; + +static struct switch_attr adm6996_port[] = { +}; + +static struct switch_attr adm6996_vlan[] = { + { + .type = SWITCH_TYPE_INT, + .name = "vid", + .description = "VLAN ID", + .set = adm6996_set_vid, + .get = adm6996_get_vid, + }, +}; + +static const struct switch_dev_ops adm6996_ops = { + .attr_global = { + .attr = adm6996_globals, + .n_attr = ARRAY_SIZE(adm6996_globals), + }, + .attr_port = { + .attr = adm6996_port, + .n_attr = ARRAY_SIZE(adm6996_port), + }, + .attr_vlan = { + .attr = adm6996_vlan, + .n_attr = ARRAY_SIZE(adm6996_vlan), + }, + .get_port_pvid = adm6996_get_pvid, + .set_port_pvid = adm6996_set_pvid, + .get_vlan_ports = adm6996_get_ports, + .set_vlan_ports = adm6996_set_ports, + .apply_config = adm6996_hw_apply, + .reset_switch = adm6996_reset_switch, +}; + +static int adm6996_config_init(struct phy_device *pdev) +{ + struct adm6996_priv *priv; + struct switch_dev *swdev; + + int ret; + u16 test, old; + + pdev->supported = ADVERTISED_100baseT_Full; + pdev->advertising = ADVERTISED_100baseT_Full; + + if (pdev->addr != 0) { + pr_info ("%s: PHY overlaps ADM6996, providing fixed PHY 0x%x.\n" + , pdev->attached_dev->name, pdev->addr); + return 0; + } + + priv = kzalloc(sizeof(struct adm6996_priv), GFP_KERNEL); + if (priv == NULL) + return -ENOMEM; + + mutex_init(&priv->reg_mutex); + priv->phydev = pdev; + priv->read = adm6996_read_mii_reg; + priv->write = adm6996_write_mii_reg; + pdev->priv = priv; + + /* Detect type of chip */ + old = r16(pdev, ADM_VID_CHECK); + test = old ^ (1 << 12); + w16(pdev, ADM_VID_CHECK, test); + test ^= r16(pdev, ADM_VID_CHECK); + if (test & (1 << 12)) { + /* + * Bit 12 of this register is read-only. + * This is the FC model. + */ + priv->model = ADM6996FC; + } else { + /* Bit 12 is read-write. This is the M model. */ + priv->model = ADM6996M; + w16(pdev, ADM_VID_CHECK, old); + } + + swdev = &priv->dev; + swdev->name = (adm6996_model_name[priv->model]); + swdev->cpu_port = ADM_CPU_PORT; + swdev->ports = ADM_NUM_PORTS; + swdev->vlans = ADM_NUM_VLANS; + swdev->ops = &adm6996_ops; + + pr_info ("%s: %s model PHY found.\n", pdev->attached_dev->name, + swdev->name); + + mutex_lock(&priv->reg_mutex); + adm6996_perform_reset (priv); + mutex_unlock(&priv->reg_mutex); + + if (priv->model == ADM6996M) { + if ((ret = register_switch(swdev, pdev->attached_dev)) < 0) { + kfree(priv); + return ret; + } } return 0; } +/* + * Warning: phydev->priv is NULL if phydev->addr != 0 + */ static int adm6996_read_status(struct phy_device *phydev) { phydev->speed = SPEED_100; @@ -100,6 +662,9 @@ static int adm6996_read_status(struct phy_device *phydev) return 0; } +/* + * Warning: phydev->priv is NULL if phydev->addr != 0 + */ static int adm6996_config_aneg(struct phy_device *phydev) { return 0; @@ -110,6 +675,10 @@ static int adm6996_fixup(struct phy_device *dev) struct mii_bus *bus = dev->bus; u16 reg; + /* Our custom registers are at PHY addresses 0-10. Claim those. */ + if (dev->addr > 10) + return 0; + /* look for the switch on the bus */ reg = bus->read(bus, PHYADDR(ADM_SIG0)) & ADM_SIG0_MASK; if (reg != ADM_SIG0_VAL) @@ -120,26 +689,23 @@ static int adm6996_fixup(struct phy_device *dev) return 0; dev->phy_id = (ADM_SIG0_VAL << 16) | ADM_SIG1_VAL; + 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); + struct adm6996_priv *priv = phy_to_adm(pdev); + + if (priv != NULL && priv->model == ADM6996M) + unregister_switch(&priv->dev); + + kfree(priv); } |