From 995803309d25c609b81f3e57c109149210b29a0d Mon Sep 17 00:00:00 2001
From: nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Tue, 4 Aug 2009 10:51:06 +0000
Subject: [PATCH] fix mvswitch/ar8216 tx path hooking for 2.6.30
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@17121 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
.../files-2.6.30/drivers/net/phy/ar8216.c | 651 ++++++++++++++++++
.../files-2.6.30/drivers/net/phy/mvswitch.c | 467 +++++++++++++
2 files changed, 1118 insertions(+)
create mode 100644 target/linux/generic-2.6/files-2.6.30/drivers/net/phy/ar8216.c
create mode 100644 target/linux/generic-2.6/files-2.6.30/drivers/net/phy/mvswitch.c
diff --git a/target/linux/generic-2.6/files-2.6.30/drivers/net/phy/ar8216.c b/target/linux/generic-2.6/files-2.6.30/drivers/net/phy/ar8216.c
new file mode 100644
index 000000000..93e4b33d9
--- /dev/null
+++ b/target/linux/generic-2.6/files-2.6.30/drivers/net/phy/ar8216.c
@@ -0,0 +1,651 @@
+/*
+ * ar8216.c: AR8216 switch driver
+ *
+ * Copyright (C) 2009 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
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/if.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/if_ether.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/netlink.h>
+#include <linux/bitops.h>
+#include <net/genetlink.h>
+#include <linux/switch.h>
+#include <linux/delay.h>
+#include <linux/phy.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include "ar8216.h"
+
+
+struct ar8216_priv {
+ struct switch_dev dev;
+ struct phy_device *phy;
+ u32 (*read)(struct ar8216_priv *priv, int reg);
+ void (*write)(struct ar8216_priv *priv, int reg, u32 val);
+ const struct net_device_ops *ndo_old;
+ struct net_device_ops ndo;
+
+ /* all fields below are cleared on reset */
+ bool vlan;
+ u8 vlan_id[AR8216_NUM_VLANS];
+ u8 vlan_table[AR8216_NUM_VLANS];
+ u8 vlan_tagged;
+ u16 pvid[AR8216_NUM_PORTS];
+};
+static struct switch_dev athdev;
+
+#define to_ar8216(_dev) container_of(_dev, struct ar8216_priv, dev)
+
+static inline void
+split_addr(u32 regaddr, u16 *r1, u16 *r2, u16 *page)
+{
+ regaddr >>= 1;
+ *r1 = regaddr & 0x1e;
+
+ regaddr >>= 5;
+ *r2 = regaddr & 0x7;
+
+ regaddr >>= 3;
+ *page = regaddr & 0x1ff;
+}
+
+static u32
+ar8216_mii_read(struct ar8216_priv *priv, int reg)
+{
+ struct phy_device *phy = priv->phy;
+ u16 r1, r2, page;
+ u16 lo, hi;
+
+ split_addr((u32) reg, &r1, &r2, &page);
+ phy->bus->write(phy->bus, 0x18, 0, page);
+ msleep(1); /* wait for the page switch to propagate */
+ lo = phy->bus->read(phy->bus, 0x10 | r2, r1);
+ hi = phy->bus->read(phy->bus, 0x10 | r2, r1 + 1);
+
+ return (hi << 16) | lo;
+}
+
+static void
+ar8216_mii_write(struct ar8216_priv *priv, int reg, u32 val)
+{
+ struct phy_device *phy = priv->phy;
+ u16 r1, r2, r3;
+ u16 lo, hi;
+
+ split_addr((u32) reg, &r1, &r2, &r3);
+ phy->bus->write(phy->bus, 0x18, 0, r3);
+ msleep(1); /* wait for the page switch to propagate */
+
+ lo = val & 0xffff;
+ hi = (u16) (val >> 16);
+ phy->bus->write(phy->bus, 0x10 | r2, r1 + 1, hi);
+ phy->bus->write(phy->bus, 0x10 | r2, r1, lo);
+}
+
+static u32
+ar8216_rmw(struct ar8216_priv *priv, int reg, u32 mask, u32 val)
+{
+ u32 v;
+
+ v = priv->read(priv, reg);
+ v &= ~mask;
+ v |= val;
+ priv->write(priv, reg, v);
+
+ return v;
+}
+
+static int
+ar8216_set_vlan(struct switch_dev *dev, const struct switch_attr *attr,
+ struct switch_val *val)
+{
+ struct ar8216_priv *priv = to_ar8216(dev);
+ priv->vlan = !!val->value.i;
+ return 0;
+}
+
+static int
+ar8216_get_vlan(struct switch_dev *dev, const struct switch_attr *attr,
+ struct switch_val *val)
+{
+ struct ar8216_priv *priv = to_ar8216(dev);
+ val->value.i = priv->vlan;
+ return 0;
+}
+
+
+static int
+ar8216_set_pvid(struct switch_dev *dev, int port, int vlan)
+{
+ struct ar8216_priv *priv = to_ar8216(dev);
+ priv->pvid[port] = vlan;
+ return 0;
+}
+
+static int
+ar8216_get_pvid(struct switch_dev *dev, int port, int *vlan)
+{
+ struct ar8216_priv *priv = to_ar8216(dev);
+ *vlan = priv->pvid[port];
+ return 0;
+}
+
+static int
+ar8216_set_vid(struct switch_dev *dev, const struct switch_attr *attr,
+ struct switch_val *val)
+{
+ struct ar8216_priv *priv = to_ar8216(dev);
+ priv->vlan_id[val->port_vlan] = val->value.i;
+ return 0;
+}
+
+static int
+ar8216_get_vid(struct switch_dev *dev, const struct switch_attr *attr,
+ struct switch_val *val)
+{
+ struct ar8216_priv *priv = to_ar8216(dev);
+ val->value.i = priv->vlan_id[val->port_vlan];
+ return 0;
+}
+
+
+static int
+ar8216_mangle_tx(struct sk_buff *skb, struct net_device *dev)
+{
+ struct ar8216_priv *priv = dev->phy_ptr;
+ unsigned char *buf;
+
+ if (unlikely(!priv))
+ goto error;
+
+ if (!priv->vlan)
+ goto send;
+
+ if (unlikely(skb_headroom(skb) < 2)) {
+ if (pskb_expand_head(skb, 2, 0, GFP_ATOMIC) < 0)
+ goto error;
+ }
+
+ buf = skb_push(skb, 2);
+ buf[0] = 0x10;
+ buf[1] = 0x80;
+
+send:
+ return priv->ndo_old->ndo_start_xmit(skb, dev);
+
+error:
+ dev_kfree_skb_any(skb);
+ return 0;
+}
+
+static int
+ar8216_mangle_rx(struct sk_buff *skb, int napi)
+{
+ struct ar8216_priv *priv;
+ struct net_device *dev;
+ unsigned char *buf;
+ int port, vlan;
+
+ dev = skb->dev;
+ if (!dev)
+ goto error;
+
+ priv = dev->phy_ptr;
+ if (!priv)
+ goto error;
+
+ /* don't strip the header if vlan mode is disabled */
+ if (!priv->vlan)
+ goto recv;
+
+ /* strip header, get vlan id */
+ buf = skb->data;
+ skb_pull(skb, 2);
+
+ /* check for vlan header presence */
+ if ((buf[12 + 2] != 0x81) || (buf[13 + 2] != 0x00))
+ goto recv;
+
+ port = buf[0] & 0xf;
+
+ /* no need to fix up packets coming from a tagged source */
+ if (priv->vlan_tagged & (1 << port))
+ goto recv;
+
+ /* lookup port vid from local table, the switch passes an invalid vlan id */
+ vlan = priv->pvid[port];
+
+ buf[14 + 2] &= 0xf0;
+ buf[14 + 2] |= vlan >> 8;
+ buf[15 + 2] = vlan & 0xff;
+
+recv:
+ skb->protocol = eth_type_trans(skb, skb->dev);
+
+ if (napi)
+ return netif_receive_skb(skb);
+ else
+ return netif_rx(skb);
+
+error:
+ /* no vlan? eat the packet! */
+ dev_kfree_skb_any(skb);
+ return 0;
+}
+
+static int
+ar8216_netif_rx(struct sk_buff *skb)
+{
+ return ar8216_mangle_rx(skb, 0);
+}
+
+static int
+ar8216_netif_receive_skb(struct sk_buff *skb)
+{
+ return ar8216_mangle_rx(skb, 1);
+}
+
+
+static struct switch_attr ar8216_globals[] = {
+ {
+ .type = SWITCH_TYPE_INT,
+ .name = "enable_vlan",
+ .description = "Enable VLAN mode",
+ .set = ar8216_set_vlan,
+ .get = ar8216_get_vlan,
+ .max = 1
+ },
+};
+
+static struct switch_attr ar8216_port[] = {
+};
+
+static struct switch_attr ar8216_vlan[] = {
+ {
+ .type = SWITCH_TYPE_INT,
+ .name = "pvid",
+ .description = "VLAN ID",
+ .set = ar8216_set_vid,
+ .get = ar8216_get_vid,
+ .max = 4095,
+ },
+};
+
+
+static int
+ar8216_get_ports(struct switch_dev *dev, struct switch_val *val)
+{
+ struct ar8216_priv *priv = to_ar8216(dev);
+ u8 ports = priv->vlan_table[val->port_vlan];
+ int i;
+
+ val->len = 0;
+ for (i = 0; i < AR8216_NUM_PORTS; i++) {
+ struct switch_port *p;
+
+ if (!(ports & (1 << i)))
+ continue;
+
+ p = &val->value.ports[val->len++];
+ p->id = i;
+ if (priv->vlan_tagged & (1 << i))
+ p->flags = (1 << SWITCH_PORT_FLAG_TAGGED);
+ else
+ p->flags = 0;
+ }
+ return 0;
+}
+
+static int
+ar8216_set_ports(struct switch_dev *dev, struct switch_val *val)
+{
+ struct ar8216_priv *priv = to_ar8216(dev);
+ u8 *vt = &priv->vlan_table[val->port_vlan];
+ int i, j;
+
+ *vt = 0;
+ for (i = 0; i < val->len; i++) {
+ struct switch_port *p = &val->value.ports[i];
+
+ if (p->flags & (1 << SWITCH_PORT_FLAG_TAGGED))
+ priv->vlan_tagged |= (1 << p->id);
+ else {
+ priv->vlan_tagged &= ~(1 << p->id);
+ priv->pvid[p->id] = val->port_vlan;
+
+ /* make sure that an untagged port does not
+ * appear in other vlans */
+ for (j = 0; j < AR8216_NUM_VLANS; j++) {
+ if (j == val->port_vlan)
+ continue;
+ priv->vlan_table[j] &= ~(1 << p->id);
+ }
+ }
+
+ *vt |= 1 << p->id;
+ }
+ return 0;
+}
+
+static int
+ar8216_wait_bit(struct ar8216_priv *priv, int reg, u32 mask, u32 val)
+{
+ int timeout = 20;
+
+ while ((priv->read(priv, reg) & mask) != val) {
+ if (timeout-- <= 0) {
+ printk(KERN_ERR "ar8216: timeout waiting for operation to complete\n");
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static void
+ar8216_vtu_op(struct ar8216_priv *priv, u32 op, u32 val)
+{
+ if (ar8216_wait_bit(priv, AR8216_REG_VTU, AR8216_VTU_ACTIVE, 0))
+ return;
+ if ((op & AR8216_VTU_OP) == AR8216_VTU_OP_LOAD) {
+ val &= AR8216_VTUDATA_MEMBER;
+ val |= AR8216_VTUDATA_VALID;
+ priv->write(priv, AR8216_REG_VTU_DATA, val);
+ }
+ op |= AR8216_VTU_ACTIVE;
+ priv->write(priv, AR8216_REG_VTU, op);
+}
+
+static int
+ar8216_hw_apply(struct switch_dev *dev)
+{
+ struct ar8216_priv *priv = to_ar8216(dev);
+ u8 portmask[AR8216_NUM_PORTS];
+ int i, j;
+
+ /* flush all vlan translation unit entries */
+ ar8216_vtu_op(priv, AR8216_VTU_OP_FLUSH, 0);
+
+ memset(portmask, 0, sizeof(portmask));
+ if (priv->vlan) {
+ /* calculate the port destination masks and load vlans
+ * into the vlan translation unit */
+ for (j = 0; j < AR8216_NUM_VLANS; j++) {
+ u8 vp = priv->vlan_table[j];
+
+ if (!vp)
+ continue;
+
+ for (i = 0; i < AR8216_NUM_PORTS; i++) {
+ u8 mask = (1 << i);
+ if (vp & mask)
+ portmask[i] |= vp & ~mask;
+ }
+
+ if (!priv->vlan_table[j])
+ continue;
+
+ ar8216_vtu_op(priv,
+ AR8216_VTU_OP_LOAD |
+ (priv->vlan_id[j] << AR8216_VTU_VID_S),
+ priv->vlan_table[j]);
+ }
+ } else {
+ /* vlan disabled:
+ * isolate all ports, but connect them to the cpu port */
+ for (i = 0; i < AR8216_NUM_PORTS; i++) {
+ if (i == AR8216_PORT_CPU)
+ continue;
+
+ portmask[i] = 1 << AR8216_PORT_CPU;
+ portmask[AR8216_PORT_CPU] |= (1 << i);
+ }
+ }
+
+ /* update the port destination mask registers and tag settings */
+ for (i = 0; i < AR8216_NUM_PORTS; i++) {
+ int egress, ingress;
+ int pvid;
+
+ if (priv->vlan) {
+ pvid = priv->vlan_id[priv->pvid[i]];
+ } else {
+ pvid = i;
+ }
+
+ if (priv->vlan && (priv->vlan_tagged & (1 << i))) {
+ egress = AR8216_OUT_ADD_VLAN;
+ } else {
+ egress = AR8216_OUT_STRIP_VLAN;
+ }
+ ingress = AR8216_IN_SECURE;
+
+ ar8216_rmw(priv, AR8216_REG_PORT_CTRL(i),
+ AR8216_PORT_CTRL_LEARN | AR8216_PORT_CTRL_VLAN_MODE |
+ AR8216_PORT_CTRL_SINGLE_VLAN | AR8216_PORT_CTRL_STATE |
+ AR8216_PORT_CTRL_HEADER | AR8216_PORT_CTRL_LEARN_LOCK,
+ AR8216_PORT_CTRL_LEARN |
+ (priv->vlan && i == AR8216_PORT_CPU ?
+ AR8216_PORT_CTRL_HEADER : 0) |
+ (egress << AR8216_PORT_CTRL_VLAN_MODE_S) |
+ (AR8216_PORT_STATE_FORWARD << AR8216_PORT_CTRL_STATE_S));
+
+ ar8216_rmw(priv, AR8216_REG_PORT_VLAN(i),
+ AR8216_PORT_VLAN_DEST_PORTS | AR8216_PORT_VLAN_MODE |
+ AR8216_PORT_VLAN_DEFAULT_ID,
+ (portmask[i] << AR8216_PORT_VLAN_DEST_PORTS_S) |
+ (ingress << AR8216_PORT_VLAN_MODE_S) |
+ (pvid << AR8216_PORT_VLAN_DEFAULT_ID_S));
+ }
+
+ return 0;
+}
+
+static int
+ar8216_reset_switch(struct switch_dev *dev)
+{
+ struct ar8216_priv *priv = to_ar8216(dev);
+ int i;
+
+ memset(&priv->vlan, 0, sizeof(struct ar8216_priv) -
+ offsetof(struct ar8216_priv, vlan));
+ for (i = 0; i < AR8216_NUM_VLANS; i++) {
+ priv->vlan_id[i] = i;
+ }
+ for (i = 0; i < AR8216_NUM_PORTS; i++) {
+ /* Enable port learning and tx */
+ priv->write(priv, AR8216_REG_PORT_CTRL(i),
+ AR8216_PORT_CTRL_LEARN |
+ (4 << AR8216_PORT_CTRL_STATE_S));
+
+ priv->write(priv, AR8216_REG_PORT_VLAN(i), 0);
+
+ /* Configure all PHYs */
+ if (i == AR8216_PORT_CPU) {
+ priv->write(priv, AR8216_REG_PORT_STATUS(i),
+ AR8216_PORT_STATUS_LINK_UP |
+ AR8216_PORT_STATUS_SPEED |
+ AR8216_PORT_STATUS_TXMAC |
+ AR8216_PORT_STATUS_RXMAC |
+ AR8216_PORT_STATUS_DUPLEX);
+ } else {
+ priv->write(priv, AR8216_REG_PORT_STATUS(i),
+ AR8216_PORT_STATUS_LINK_AUTO);
+ }
+ }
+ /* XXX: undocumented magic from atheros, required! */
+ priv->write(priv, 0x38, 0xc000050e);
+
+ ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL,
+ AR8216_GCTRL_MTU, 1518 + 8 + 2);
+
+ return ar8216_hw_apply(dev);
+}
+
+static int
+ar8216_config_init(struct phy_device *pdev)
+{
+ struct ar8216_priv *priv;
+ struct net_device *dev = pdev->attached_dev;
+ int ret;
+
+ printk("%s: AR8216 PHY driver attached.\n", pdev->attached_dev->name);
+ pdev->supported = ADVERTISED_100baseT_Full;
+ pdev->advertising = ADVERTISED_100baseT_Full;
+
+ priv = kzalloc(sizeof(struct ar8216_priv), GFP_KERNEL);
+ if (priv == NULL)
+ return -ENOMEM;
+
+ priv->phy = pdev;
+ priv->read = ar8216_mii_read;
+ priv->write = ar8216_mii_write;
+ memcpy(&priv->dev, &athdev, sizeof(struct switch_dev));
+ pdev->priv = priv;
+ if ((ret = register_switch(&priv->dev, pdev->attached_dev)) < 0) {
+ kfree(priv);
+ goto done;
+ }
+
+ ret = ar8216_reset_switch(&priv->dev);
+ if (ret)
+ goto done;
+
+ dev->phy_ptr = priv;
+ pdev->pkt_align = 2;
+ pdev->netif_receive_skb = ar8216_netif_receive_skb;
+ pdev->netif_rx = ar8216_netif_rx;
+
+ priv->ndo_old = dev->netdev_ops;
+ memcpy(&priv->ndo, priv->ndo_old, sizeof(struct net_device_ops));
+ priv->ndo.ndo_start_xmit = ar8216_mangle_tx;
+ dev->netdev_ops = &priv->ndo;
+
+done:
+ return ret;
+}
+
+static int
+ar8216_read_status(struct phy_device *phydev)
+{
+ struct ar8216_priv *priv = phydev->priv;
+
+ phydev->speed = SPEED_100;
+ phydev->duplex = DUPLEX_FULL;
+ phydev->state = PHY_UP;
+
+ /* flush the address translation unit */
+ if (ar8216_wait_bit(priv, AR8216_REG_ATU, AR8216_ATU_ACTIVE, 0))
+ return -ETIMEDOUT;
+
+ priv->write(priv, AR8216_REG_ATU, AR8216_ATU_OP_FLUSH);
+
+ return 0;
+}
+
+static int
+ar8216_config_aneg(struct phy_device *phydev)
+{
+ return 0;
+}
+
+static int
+ar8216_probe(struct phy_device *pdev)
+{
+ struct ar8216_priv priv;
+
+ u8 id, rev;
+ u32 val;
+
+ priv.phy = pdev;
+ val = ar8216_mii_read(&priv, AR8216_REG_CTRL);
+ rev = val & 0xff;
+ id = (val >> 8) & 0xff;
+ if ((id != 1) || (rev != 1))
+ return -ENODEV;
+
+ return 0;
+}
+
+static void
+ar8216_remove(struct phy_device *pdev)
+{
+ struct ar8216_priv *priv = pdev->priv;
+ struct net_device *dev = pdev->attached_dev;
+
+ if (!priv)
+ return;
+
+ if (priv->ndo_old && dev)
+ dev->netdev_ops = priv->ndo_old;
+ unregister_switch(&priv->dev);
+ kfree(priv);
+}
+
+/* template */
+static struct switch_dev athdev = {
+ .name = "Atheros AR8216",
+ .cpu_port = AR8216_PORT_CPU,
+ .ports = AR8216_NUM_PORTS,
+ .vlans = AR8216_NUM_VLANS,
+ .attr_global = {
+ .attr = ar8216_globals,
+ .n_attr = ARRAY_SIZE(ar8216_globals),
+ },
+ .attr_port = {
+ .attr = ar8216_port,
+ .n_attr = ARRAY_SIZE(ar8216_port),
+ },
+ .attr_vlan = {
+ .attr = ar8216_vlan,
+ .n_attr = ARRAY_SIZE(ar8216_vlan),
+ },
+ .get_port_pvid = ar8216_get_pvid,
+ .set_port_pvid = ar8216_set_pvid,
+ .get_vlan_ports = ar8216_get_ports,
+ .set_vlan_ports = ar8216_set_ports,
+ .apply_config = ar8216_hw_apply,
+ .reset_switch = ar8216_reset_switch,
+};
+
+static struct phy_driver ar8216_driver = {
+ .name = "Atheros AR8216",
+ .features = PHY_BASIC_FEATURES,
+ .probe = ar8216_probe,
+ .remove = ar8216_remove,
+ .config_init = &ar8216_config_init,
+ .config_aneg = &ar8216_config_aneg,
+ .read_status = &ar8216_read_status,
+ .driver = { .owner = THIS_MODULE },
+};
+
+int __init
+ar8216_init(void)
+{
+ return phy_driver_register(&ar8216_driver);
+}
+
+void __exit
+ar8216_exit(void)
+{
+ phy_driver_unregister(&ar8216_driver);
+}
+
+module_init(ar8216_init);
+module_exit(ar8216_exit);
+MODULE_LICENSE("GPL");
+
diff --git a/target/linux/generic-2.6/files-2.6.30/drivers/net/phy/mvswitch.c b/target/linux/generic-2.6/files-2.6.30/drivers/net/phy/mvswitch.c
new file mode 100644
index 000000000..7aed70d47
--- /dev/null
+++ b/target/linux/generic-2.6/files-2.6.30/drivers/net/phy/mvswitch.c
@@ -0,0 +1,467 @@
+/*
+ * Marvell 88E6060 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 <linux/if_vlan.h>
+
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include "mvswitch.h"
+
+/* Undefine this to use trailer mode instead.
+ * I don't know if header mode works with all chips */
+#define HEADER_MODE 1
+
+MODULE_DESCRIPTION("Marvell 88E6060 Switch driver");
+MODULE_AUTHOR("Felix Fietkau");
+MODULE_LICENSE("GPL");
+
+#define MVSWITCH_MAGIC 0x88E6060
+
+struct mvswitch_priv {
+ const struct net_device_ops *ndo_old;
+ struct net_device_ops ndo;
+ struct vlan_group *grp;
+ u8 vlans[16];
+};
+
+#define to_mvsw(_phy) ((struct mvswitch_priv *) (_phy)->priv)
+
+static inline u16
+r16(struct phy_device *phydev, int addr, int reg)
+{
+ return phydev->bus->read(phydev->bus, addr, reg);
+}
+
+static inline void
+w16(struct phy_device *phydev, int addr, int reg, u16 val)
+{
+ phydev->bus->write(phydev->bus, addr, reg, val);
+}
+
+
+static int
+mvswitch_mangle_tx(struct sk_buff *skb, struct net_device *dev)
+{
+ struct mvswitch_priv *priv;
+ char *buf = NULL;
+ u16 vid;
+
+ priv = dev->phy_ptr;
+ if (unlikely(!priv))
+ goto error;
+
+ if (unlikely(skb->len < 16))
+ goto error;
+
+#ifdef HEADER_MODE
+ if (__vlan_hwaccel_get_tag(skb, &vid))
+ goto error;
+
+ if (skb_cloned(skb) || (skb->len <= 62) || (skb_headroom(skb) < MV_HEADER_SIZE)) {
+ if (pskb_expand_head(skb, MV_HEADER_SIZE, (skb->len < 62 ? 62 - skb->len : 0), GFP_ATOMIC))
+ goto error_expand;
+ if (skb->len < 62)
+ skb->len = 62;
+ }
+ buf = skb_push(skb, MV_HEADER_SIZE);
+#else
+ if (__vlan_get_tag(skb, &vid))
+ goto error;
+
+ if (unlikely((vid > 15 || !priv->vlans[vid])))
+ goto error;
+
+ if (skb->len <= 64) {
+ if (pskb_expand_head(skb, 0, 64 + MV_TRAILER_SIZE - skb->len, GFP_ATOMIC))
+ goto error_expand;
+
+ buf = skb->data + 64;
+ skb->len = 64 + MV_TRAILER_SIZE;
+ } else {
+ if (skb_cloned(skb) || unlikely(skb_tailroom(skb) < 4)) {
+ if (pskb_expand_head(skb, 0, 4, GFP_ATOMIC))
+ goto error_expand;
+ }
+ buf = skb_put(skb, 4);
+ }
+
+ /* move the ethernet header 4 bytes forward, overwriting the vlan tag */
+ memmove(skb->data + 4, skb->data, 12);
+ skb->data += 4;
+ skb->len -= 4;
+ skb->mac_header += 4;
+#endif
+
+ if (!buf)
+ goto error;
+
+
+#ifdef HEADER_MODE
+ /* prepend the tag */
+ *((__be16 *) buf) = cpu_to_be16(
+ ((vid << MV_HEADER_VLAN_S) & MV_HEADER_VLAN_M) |
+ ((priv->vlans[vid] << MV_HEADER_PORTS_S) & MV_HEADER_PORTS_M)
+ );
+#else
+ /* append the tag */
+ *((__be32 *) buf) = cpu_to_be32((
+ (MV_TRAILER_OVERRIDE << MV_TRAILER_FLAGS_S) |
+ ((priv->vlans[vid] & MV_TRAILER_PORTS_M) << MV_TRAILER_PORTS_S)
+ ));
+#endif
+
+ return priv->ndo_old->ndo_start_xmit(skb, dev);
+
+error_expand:
+ if (net_ratelimit())
+ printk("%s: failed to expand/update skb for the switch\n", dev->name);
+
+error:
+ /* any errors? drop the packet! */
+ dev_kfree_skb_any(skb);
+ return 0;
+}
+
+static int
+mvswitch_mangle_rx(struct sk_buff *skb, int napi)
+{
+ struct mvswitch_priv *priv;
+ struct net_device *dev;
+ int vlan = -1;
+ unsigned char *buf;
+ int i;
+
+ dev = skb->dev;
+ if (!dev)
+ goto error;
+
+ priv = dev->phy_ptr;
+ if (!priv)
+ goto error;
+
+ if (!priv->grp)
+ goto error;
+
+#ifdef HEADER_MODE
+ buf = skb->data;
+ skb_pull(skb, MV_HEADER_SIZE);
+#else
+ buf = skb->data + skb->len - MV_TRAILER_SIZE;
+ if (buf[0] != 0x80)
+ goto error;
+#endif
+
+ /* look for the vlan matching the incoming port */
+ for (i = 0; i < ARRAY_SIZE(priv->vlans); i++) {
+ if ((1 << buf[1]) & priv->vlans[i])
+ vlan = i;
+ }
+
+ if (vlan == -1)
+ goto error;
+
+ skb->protocol = eth_type_trans(skb, skb->dev);
+
+ if (napi)
+ return vlan_hwaccel_receive_skb(skb, priv->grp, vlan);
+ else
+ return vlan_hwaccel_rx(skb, priv->grp, vlan);
+
+error:
+ /* no vlan? eat the packet! */
+ dev_kfree_skb_any(skb);
+ return 0;
+}
+
+
+static int
+mvswitch_netif_rx(struct sk_buff *skb)
+{
+ return mvswitch_mangle_rx(skb, 0);
+}
+
+static int
+mvswitch_netif_receive_skb(struct sk_buff *skb)
+{
+ return mvswitch_mangle_rx(skb, 1);
+}
+
+
+static void
+mvswitch_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
+{
+ struct mvswitch_priv *priv = dev->phy_ptr;
+ priv->grp = grp;
+}
+
+
+static int
+mvswitch_wait_mask(struct phy_device *pdev, int addr, int reg, u16 mask, u16 val)
+{
+ int i = 100;
+ u16 r;
+
+ do {
+ r = r16(pdev, addr, reg) & mask;
+ if (r == val)
+ return 0;
+ } while(--i > 0);
+ return -ETIMEDOUT;
+}
+
+static int
+mvswitch_config_init(struct phy_device *pdev)
+{
+ struct mvswitch_priv *priv = to_mvsw(pdev);
+ struct net_device *dev = pdev->attached_dev;
+ u8 vlmap = 0;
+ int i;
+
+ if (!dev)
+ return -EINVAL;
+
+ printk("%s: Marvell 88E6060 PHY driver attached.\n", dev->name);
+ pdev->supported = ADVERTISED_100baseT_Full;
+ pdev->advertising = ADVERTISED_100baseT_Full;
+ dev->phy_ptr = priv;
+ dev->irq = PHY_POLL;
+
+ /* initialize default vlans */
+ for (i = 0; i < MV_PORTS; i++)
+ priv->vlans[(i == MV_WANPORT ? 2 : 1)] |= (1 << i);
+
+ /* before entering reset, disable all ports */
+ for (i = 0; i < MV_PORTS; i++)
+ w16(pdev, MV_PORTREG(CONTROL, i), 0x00);
+
+ msleep(2); /* wait for the status change to settle in */
+
+ /* put the ATU in reset */
+ w16(pdev, MV_SWITCHREG(ATU_CTRL), MV_ATUCTL_RESET);
+
+ i = mvswitch_wait_mask(pdev, MV_SWITCHREG(ATU_CTRL), MV_ATUCTL_RESET, 0);
+ if (i < 0) {
+ printk("%s: Timeout waiting for the switch to reset.\n", dev->name);
+ return i;
+ }
+
+ /* set the ATU flags */
+ w16(pdev, MV_SWITCHREG(ATU_CTRL),
+ MV_ATUCTL_NO_LEARN |
+ MV_ATUCTL_ATU_1K |
+ MV_ATUCTL_AGETIME(MV_ATUCTL_AGETIME_MIN) /* minimum without disabling ageing */
+ );
+
+ /* initialize the cpu port */
+ w16(pdev, MV_PORTREG(CONTROL, MV_CPUPORT),
+#ifdef HEADER_MODE
+ MV_PORTCTRL_HEADER |
+#else
+ MV_PORTCTRL_RXTR |
+ MV_PORTCTRL_TXTR |
+#endif
+ MV_PORTCTRL_ENABLED
+ );
+ /* wait for the phy change to settle in */
+ msleep(2);
+ for (i = 0; i < MV_PORTS; i++) {
+ u8 pvid = 0;
+ int j;
+
+ vlmap = 0;
+
+ /* look for the matching vlan */
+ for (j = 0; j < ARRAY_SIZE(priv->vlans); j++) {
+ if (priv->vlans[j] & (1 << i)) {
+ vlmap = priv->vlans[j];
+ pvid = j;
+ }
+ }
+ /* leave port unconfigured if it's not part of a vlan */
+ if (!vlmap)
+ continue;
+
+ /* add the cpu port to the allowed destinations list */
+ vlmap |= (1 << MV_CPUPORT);
+
+ /* take port out of its own vlan destination map */
+ vlmap &= ~(1 << i);
+
+ /* apply vlan settings */
+ w16(pdev, MV_PORTREG(VLANMAP, i),
+ MV_PORTVLAN_PORTS(vlmap) |
+ MV_PORTVLAN_ID(i)
+ );
+
+ /* re-enable port */
+ w16(pdev, MV_PORTREG(CONTROL, i),
+ MV_PORTCTRL_ENABLED
+ );
+ }
+
+ w16(pdev, MV_PORTREG(VLANMAP, MV_CPUPORT),
+ MV_PORTVLAN_ID(MV_CPUPORT)
+ );
+
+ /* set the port association vector */
+ for (i = 0; i <= MV_PORTS; i++) {
+ w16(pdev, MV_PORTREG(ASSOC, i),
+ MV_PORTASSOC_PORTS(1 << i)
+ );
+ }
+
+ /* init switch control */
+ w16(pdev, MV_SWITCHREG(CTRL),
+ MV_SWITCHCTL_MSIZE |
+ MV_SWITCHCTL_DROP
+ );
+
+ /* hook into the tx function */
+ priv->ndo_old = dev->netdev_ops;
+ memcpy(&priv->ndo, priv->ndo_old, sizeof(struct net_device_ops));
+ priv->ndo.ndo_start_xmit = mvswitch_mangle_tx;
+ priv->ndo.ndo_vlan_rx_register = mvswitch_vlan_rx_register;
+ dev->netdev_ops = &priv->ndo;
+
+ pdev->pkt_align = 2;
+ pdev->netif_receive_skb = mvswitch_netif_receive_skb;
+ pdev->netif_rx = mvswitch_netif_rx;
+#ifdef HEADER_MODE
+ dev->features |= NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX;
+#else
+ dev->features |= NETIF_F_HW_VLAN_RX;
+#endif
+
+ return 0;
+}
+
+static int
+mvswitch_read_status(struct phy_device *pdev)
+{
+ pdev->speed = SPEED_100;
+ pdev->duplex = DUPLEX_FULL;
+ pdev->state = PHY_UP;
+
+ /* XXX ugly workaround: we can't force the switch
+ * to gracefully handle hosts moving from one port to another,
+ * so we have to regularly clear the ATU database */
+
+ /* wait for the ATU to become available */
+ mvswitch_wait_mask(pdev, MV_SWITCHREG(ATU_OP), MV_ATUOP_INPROGRESS, 0);
+
+ /* flush the ATU */
+ w16(pdev, MV_SWITCHREG(ATU_OP),
+ MV_ATUOP_INPROGRESS |
+ MV_ATUOP_FLUSH_ALL
+ );
+
+ /* wait for operation to complete */
+ mvswitch_wait_mask(pdev, MV_SWITCHREG(ATU_OP), MV_ATUOP_INPROGRESS, 0);
+
+ return 0;
+}
+
+static int
+mvswitch_config_aneg(struct phy_device *phydev)
+{
+ return 0;
+}
+
+static void
+mvswitch_remove(struct phy_device *pdev)
+{
+ struct mvswitch_priv *priv = to_mvsw(pdev);
+ struct net_device *dev = pdev->attached_dev;
+
+ /* restore old netdev ops */
+ if (priv->ndo_old && dev)
+ dev->netdev_ops = priv->ndo_old;
+ dev->vlan_rx_register = NULL;
+ dev->vlan_rx_kill_vid = NULL;
+ dev->phy_ptr = NULL;
+ dev->features &= ~NETIF_F_HW_VLAN_RX;
+ kfree(priv);
+}
+
+static int
+mvswitch_probe(struct phy_device *pdev)
+{
+ struct mvswitch_priv *priv;
+
+ priv = kzalloc(sizeof(struct mvswitch_priv), GFP_KERNEL);
+ if (priv == NULL)
+ return -ENOMEM;
+
+ pdev->priv = priv;
+
+ return 0;
+}
+
+static int
+mvswitch_fixup(struct phy_device *dev)
+{
+ u16 reg;
+
+ if (dev->addr != 0x10)
+ return 0;
+
+ reg = dev->bus->read(dev->bus, MV_PORTREG(IDENT, 0)) & MV_IDENT_MASK;
+ if (reg != MV_IDENT_VALUE)
+ return 0;
+
+ dev->phy_id = MVSWITCH_MAGIC;
+ return 0;
+}
+
+
+static struct phy_driver mvswitch_driver = {
+ .name = "Marvell 88E6060",
+ .phy_id = MVSWITCH_MAGIC,
+ .phy_id_mask = 0xffffffff,
+ .features = PHY_BASIC_FEATURES,
+ .probe = &mvswitch_probe,
+ .remove = &mvswitch_remove,
+ .config_init = &mvswitch_config_init,
+ .config_aneg = &mvswitch_config_aneg,
+ .read_status = &mvswitch_read_status,
+ .driver = { .owner = THIS_MODULE,},
+};
+
+static int __init
+mvswitch_init(void)
+{
+ phy_register_fixup_for_id(PHY_ANY_ID, mvswitch_fixup);
+ return phy_driver_register(&mvswitch_driver);
+}
+
+static void __exit
+mvswitch_exit(void)
+{
+ phy_driver_unregister(&mvswitch_driver);
+}
+
+module_init(mvswitch_init);
+module_exit(mvswitch_exit);
--
2.20.1