--- /dev/null
+-------
+
+ADM6996FC / ADM6996M switch chip driver
+
+
+1. General information
+
+ This driver supports the FC and M models only. The ADM6996F and L are
+ completely different chips.
+
+ Support for the FC model is extremely limited at the moment. There is no VLAN
+ support as of yet. The driver will not offer an swconfig interface for the FC
+ chip.
+
+1.1 VLAN IDs
+
+ It is possible to define 16 different VLANs. Every VLAN has an identifier, its
+ VLAN ID. It is easiest if you use at most VLAN IDs 0-15. In that case, the
+ swconfig based configuration is very straightforward. To define two VLANs with
+ IDs 4 and 5, you can invoke, for example:
+
+ # swconfig dev ethX vlan 4 set ports '0 1t 2 5t'
+ # swconfig dev ethX vlan 5 set ports '0t 1t 5t'
+
+ The swconfig framework will automatically invoke 'port Y set pvid Z' for every
+ port that is an untagged member of VLAN Y, setting its Primary VLAN ID. In
+ this example, ports 0 and 2 would get "pvid 4". The Primary VLAN ID of a port
+ is the VLAN ID associated with untagged packets coming in on that port.
+
+ But if you wish to use VLAN IDs outside the range 0-15, this automatic
+ behaviour of the swconfig framework becomes a problem. The 16 VLANs that
+ swconfig can configure on the ADM6996 also have a "vid" setting. By default,
+ this is the same as the number of the VLAN entry, to make the simple behaviour
+ above possible. To still support a VLAN with a VLAN ID higher than 15
+ (presumably because you are in a network where such VLAN IDs are already in
+ use), you can change the "vid" setting of the VLAN to anything in the range
+ 0-1023. But suppose you did the following:
+
+ # swconfig dev ethX vlan 0 set vid 998
+ # swconfig dev ethX vlan 0 set ports '0 2 5t'
+
+ Now the swconfig framework will issue 'port 0 set pvid 0' and 'port 2 set pvid
+ 0'. But the "pvid" should be set to 998, so you are responsible for manually
+ fixing this!
+
+1.2 VLAN filtering
+
+ The switch is configured to apply source port filtering. This means that
+ packets are only accepted when the port the packets came in on is a member of
+ the VLAN the packet should go to.
+
+ Only membership of a VLAN is tested, it does not matter whether it is a tagged
+ or untagged membership.
+
+ For untagged packets, the destination VLAN is the Primary VLAN ID of the
+ incoming port. So if the PVID of a port is 0, but that port is not a member of
+ the VLAN with ID 0, this means that untagged packets on that port are dropped.
+ This can be used as a roundabout way of dropping untagged packets from a port,
+ a mode often referred to as "Admit only tagged packets".
+
+1.3 Reset
+
+ The two supported chip models do not have a sofware-initiated reset. When the
+ driver is initialised, as well as when the 'reset' swconfig option is invoked,
+ the driver will set those registers it knows about and supports to the correct
+ default value. But there are a lot of registers in the chip that the driver
+ does not support. If something changed those registers, invoking 'reset' or
+ performing a warm reboot might still leave the chip in a "broken" state. Only
+ a hardware reset will bring it back in the default state.
+
+2. Technical details on PHYs and the ADM6996
+
+ From the viewpoint of the Linux kernel, it is common that an Ethernet adapter
+ can be seen as a separate MAC entity and a separate PHY entity. The PHY entity
+ can be queried and set through registers accessible via an MDIO bus. A PHY
+ normally has a single address on that bus, in the range 0 through 31.
+
+ The ADM6996 has special-purpose registers in the range of PHYs 0 through 10.
+ Even though all these registers control a single ADM6996 chip, the Linux
+ kernel treats this as 11 separate PHYs. The driver will bind to these
+ addresses to prevent a different PHY driver from binding and corrupting these
+ registers.
+
+ What Linux sees as the PHY on address 0 is meant for the Ethernet MAC
+ connected to the CPU port of the ADM6996 switch chip (port 5). This is the
+ Ethernet MAC you will use to send and receive data through the switch.
+
+ The PHYs at addresses 16 through 20 map to the PHYs on ports 0 through 4 of
+ the switch chip. These can be accessed with the Generic PHY driver, as the
+ registers have the common layout.
+
+ If a second Ethernet MAC on your board is wired to the port 4 PHY, that MAC
+ needs to bind to PHY address 20 for the port to work correctly.
+
+ The ADM6996 switch driver will reset the ports 0 through 3 on startup and when
+ 'reset' is invoked. This could clash with a different PHY driver if the kernel
+ binds a PHY driver to address 16 through 19.
+
+ If Linux binds a PHY on addresses 1 through 10 to an Ethernet MAC, the ADM6996
+ driver will simply always report a connected 100 Mbit/s full-duplex link for
+ that PHY, and provide no other functionality. This is most likely not what you
+ want. So if you see a message in your log
+
+ ethX: PHY overlaps ADM6996, providing fixed PHY yy.
+
+ This is most likely an indication that ethX will not work properly, and your
+ kernel needs to be configured to attach a different PHY to that Ethernet MAC.
+
+ Controlling the mapping between MACs and PHYs is usually done in platform- or
+ board-specific fixup code. The ADM6996 driver has no influence over this.
/*
* 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>
#include <linux/mii.h>
#include <linux/ethtool.h>
#include <linux/phy.h>
+#include <linux/switch.h>
#include <asm/io.h>
#include <asm/irq.h>
#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);
}
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;
return 0;
}
+/*
+ * Warning: phydev->priv is NULL if phydev->addr != 0
+ */
static int adm6996_config_aneg(struct phy_device *phydev)
{
return 0;
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)
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);
}
* ADM6996 switch driver
*
* Copyright (c) 2008 Felix Fietkau <nbd@openwrt.org>
+ * 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
#ifndef __ADM6996_H
#define __ADM6996_H
-#define ADM_PHY_PORTS 5
+/*
+ * ADM_PHY_PORTS: Number of ports with a PHY.
+ * We only control ports 0 to 3, because if 4 is connected, it is most likely
+ * not connected to the switch but to a separate MII and MAC for the WAN port.
+ */
+#define ADM_PHY_PORTS 4
+#define ADM_NUM_PORTS 6
#define ADM_CPU_PORT 5
-#define ADM_WAN_PORT 0 /* FIXME: dynamic ? */
+
+#define ADM_NUM_VLANS 16
+#define ADM_VLAN_MAX_ID 4094
enum admreg {
ADM_EEPROM_BASE = 0x0,
ADM_P3_CFG = ADM_EEPROM_BASE + 7,
ADM_P4_CFG = ADM_EEPROM_BASE + 8,
ADM_P5_CFG = ADM_EEPROM_BASE + 9,
+ ADM_SYSC0 = ADM_EEPROM_BASE + 0xa,
+ ADM_VLAN_PRIOMAP = ADM_EEPROM_BASE + 0xe,
+ ADM_SYSC3 = ADM_EEPROM_BASE + 0x11,
+ /* Input Force No Tag Enable */
+ ADM_IFNTE = ADM_EEPROM_BASE + 0x20,
+ ADM_VID_CHECK = ADM_EEPROM_BASE + 0x26,
+ ADM_P0_PVID = ADM_EEPROM_BASE + 0x28,
+ ADM_P1_PVID = ADM_EEPROM_BASE + 0x29,
+ /* Output Tag Bypass Enable and P2 PVID */
+ ADM_OTBE_P2_PVID = ADM_EEPROM_BASE + 0x2a,
+ ADM_P3_P4_PVID = ADM_EEPROM_BASE + 0x2b,
+ ADM_P5_PVID = ADM_EEPROM_BASE + 0x2c,
ADM_EEPROM_EXT_BASE = 0x40,
+#define ADM_VLAN_FILT_L(n) (ADM_EEPROM_EXT_BASE + 2 * (n))
+#define ADM_VLAN_FILT_H(n) (ADM_EEPROM_EXT_BASE + 1 + 2 * (n))
ADM_COUNTER_BASE = 0xa0,
ADM_SIG0 = ADM_COUNTER_BASE + 0,
ADM_SIG1 = ADM_COUNTER_BASE + 1,
};
/* Chip identification patterns */
-#define ADM_SIG0_MASK 0xfff0
-#define ADM_SIG0_VAL 0x1020
+#define ADM_SIG0_MASK 0xffff
+#define ADM_SIG0_VAL 0x1023
#define ADM_SIG1_MASK 0xffff
#define ADM_SIG1_VAL 0x0007
),
};
-#define ADM_PORTCFG_PPID(N) ((n & 0x3) << 8)
+#define ADM_PORTCFG_PPID(n) ((n & 0x3) << 8)
#define ADM_PORTCFG_PVID(n) ((n & 0xf) << 10)
+#define ADM_PORTCFG_PVID_MASK (0xf << 10)
+
+#define ADM_IFNTE_MASK (0x3f << 9)
+#define ADM_VID_CHECK_MASK (0x3f << 6)
+
+#define ADM_P0_PVID_VAL(n) ((((n) & 0xff0) >> 4) << 0)
+#define ADM_P1_PVID_VAL(n) ((((n) & 0xff0) >> 4) << 0)
+#define ADM_P2_PVID_VAL(n) ((((n) & 0xff0) >> 4) << 0)
+#define ADM_P3_PVID_VAL(n) ((((n) & 0xff0) >> 4) << 0)
+#define ADM_P4_PVID_VAL(n) ((((n) & 0xff0) >> 4) << 8)
+#define ADM_P5_PVID_VAL(n) ((((n) & 0xff0) >> 4) << 0)
+#define ADM_P2_PVID_MASK 0xff
+
+#define ADM_OTBE(n) (((n) & 0x3f) << 8)
+#define ADM_OTBE_MASK (0x3f << 8)
+
+/* ADM_SYSC0 */
+enum {
+ ADM_NTTE = (1 << 2), /* New Tag Transmit Enable */
+ ADM_RVID1 = (1 << 8) /* Replace VLAN ID 1 */
+};
+
+/* Tag Based VLAN in ADM_SYSC3 */
+#define ADM_TBV (1 << 5)
static const u8 adm_portcfg[] = {
[0] = ADM_P0_CFG,
[5] = ADM_P5_CFG,
};
+/* Fields in ADM_VLAN_FILT_L(x) */
+#define ADM_VLAN_FILT_FID(n) (((n) & 0xf) << 12)
+#define ADM_VLAN_FILT_TAGGED(n) (((n) & 0x3f) << 6)
+#define ADM_VLAN_FILT_MEMBER(n) (((n) & 0x3f) << 0)
+#define ADM_VLAN_FILT_MEMBER_MASK 0x3f
+/* Fields in ADM_VLAN_FILT_H(x) */
+#define ADM_VLAN_FILT_VALID (1 << 15)
+#define ADM_VLAN_FILT_VID(n) (((n) & 0xfff) << 0)
+
+
/*
* Split the register address in phy id and register
* it will get combined again by the mdio bus op
projects / openwrt.git / commitdiff