--- /dev/null
+/*
+ * 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"
+
+MODULE_DESCRIPTION("Marvell 88E6060 Switch driver");
+MODULE_AUTHOR("Felix Fietkau");
+MODULE_LICENSE("GPL");
+
+struct mvswitch_priv {
+ /* the driver's tx function */
+ int (*hardstart)(struct sk_buff *skb, struct net_device *dev);
+ 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;
+ struct vlan_ethhdr *eh;
+ char *buf = NULL;
+ u16 vid;
+
+ priv = dev->phy_ptr;
+ if (unlikely(!priv))
+ goto error;
+
+ if (unlikely(skb->len < 16))
+ goto error;
+
+ eh = (struct vlan_ethhdr *) skb->data;
+ if (be16_to_cpu(eh->h_vlan_proto) != 0x8100)
+ goto error;
+
+ vid = be16_to_cpu(eh->h_vlan_TCI) & VLAN_VID_MASK;
+ if (unlikely((vid > 15 || !priv->vlans[vid])))
+ goto error;
+
+ if (skb->len <= 64) {
+ if (pskb_expand_head(skb, 0, 68 - skb->len, GFP_ATOMIC)) {
+ if (net_ratelimit())
+ printk("%s: failed to expand/update skb for the switch\n", dev->name);
+ goto error;
+ }
+
+ buf = skb->data + 64;
+ skb->len = 68;
+ } else {
+ if (skb_cloned(skb) || unlikely(skb_tailroom(skb) < 4)) {
+ if (pskb_expand_head(skb, 0, 4, GFP_ATOMIC)) {
+ if (net_ratelimit())
+ printk("%s: failed to expand/update skb for the switch\n", dev->name);
+ goto error;
+ }
+ }
+ 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;
+
+ if (!buf)
+ goto error;
+
+ /* append the tag */
+ *((u32 *) buf) = (
+ (0x80 << 24) |
+ ((priv->vlans[vid] & 0x1f) << 16)
+ );
+
+ return priv->hardstart(skb, dev);
+
+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;
+
+ buf = skb->data + skb->len - 4;
+ if (buf[0] != 0x80)
+ goto error;
+
+ /* 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;
+
+ 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_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;
+
+ /* initialize default vlans */
+ for (i = 0; i < MV_PORTS; i++)
+ priv->vlans[(i == MV_WANPORT ? 1 : 0)] |= (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 device in reset and set ATU flags */
+ w16(pdev, MV_SWITCHREG(ATU_CTRL),
+ MV_ATUCTL_RESET |
+ MV_ATUCTL_ATU_1K |
+ MV_ATUCTL_AGETIME(4080) /* maximum */
+ );
+
+ i = 100; /* timeout */
+ do {
+ if (!(r16(pdev, MV_SWITCHREG(ATU_CTRL)) & MV_ATUCTL_RESET))
+ break;
+ msleep(1);
+ } while (--i > 0);
+
+ if (!i) {
+ printk("%s: Timeout waiting for the switch to reset.\n", dev->name);
+ return -ETIMEDOUT;
+ }
+
+ /* initialize the cpu port */
+ w16(pdev, MV_PORTREG(CONTROL, MV_CPUPORT),
+ MV_PORTCTRL_ENABLED |
+ MV_PORTCTRL_VLANTUN |
+ MV_PORTCTRL_RXTR |
+ MV_PORTCTRL_TXTR
+ );
+ /* 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)
+ break;
+
+ /* 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(pvid)
+ );
+
+ /* re-enable port */
+ w16(pdev, MV_PORTREG(CONTROL, i), MV_PORTCTRL_ENABLED);
+ }
+
+ /* build the target list for the cpu port */
+ for (i = 0, vlmap = 0; i < ARRAY_SIZE(priv->vlans); i++)
+ vlmap |= priv->vlans[i];
+
+ w16(pdev, MV_PORTREG(VLANMAP, MV_CPUPORT),
+ MV_PORTVLAN_PORTS(vlmap)
+ );
+
+ /* set the port association vector */
+ for (i = 0; i <= MV_PORTS; i++) {
+ w16(pdev, MV_PORTREG(ASSOC, i),
+ MV_PORTASSOC_PORTS(1 << i)
+ );
+ }
+
+ /* hook into the tx function */
+ priv->hardstart = dev->hard_start_xmit;
+ pdev->netif_receive_skb = mvswitch_netif_receive_skb;
+ pdev->netif_rx = mvswitch_netif_rx;
+ dev->hard_start_xmit = mvswitch_mangle_tx;
+ dev->vlan_rx_register = mvswitch_vlan_rx_register;
+ dev->features |= NETIF_F_HW_VLAN_RX;
+
+ return 0;
+}
+
+static int
+mvswitch_read_status(struct phy_device *phydev)
+{
+ phydev->speed = SPEED_100;
+ phydev->duplex = DUPLEX_FULL;
+ phydev->state = PHY_UP;
+ 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 xmit handler */
+ if (priv->hardstart && dev)
+ dev->hard_start_xmit = priv->hardstart;
+ 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 bool
+mvswitch_detect(struct mii_bus *bus, int addr)
+{
+ u16 reg;
+ int i;
+
+ /* we attach to phy id 31 to make sure that the late probe works */
+ if (addr != 31)
+ return false;
+
+ /* look for the switch on the bus */
+ reg = bus->read(bus, MV_PORTREG(IDENT, 0)) & MV_IDENT_MASK;
+ if (reg != MV_IDENT_VALUE)
+ return false;
+
+ /*
+ * Now that we've established that the switch actually exists, let's
+ * get rid of the competition :)
+ */
+ for (i = 0; i < 31; i++) {
+ if (!bus->phy_map[i])
+ continue;
+
+ device_unregister(&bus->phy_map[i]->dev);
+ kfree(bus->phy_map[i]);
+ bus->phy_map[i] = NULL;
+ }
+
+ return true;
+}
+
+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 struct phy_driver mvswitch_driver = {
+ .name = "Marvell 88E6060",
+ .features = PHY_BASIC_FEATURES,
+ .detect = &mvswitch_detect,
+ .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)
+{
+ 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);
--- /dev/null
+/*
+ * 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
+ */
+#ifndef __MVSWITCH_H
+#define __MVSWITCH_H
+
+#define MV_PORTS 5
+#define MV_WANPORT 4
+#define MV_CPUPORT 5
+
+#define MV_BASE 0x10
+
+#define MV_PHYPORT_BASE (MV_BASE + 0x0)
+#define MV_PHYPORT(_n) (MV_PHYPORT_BASE + (_n))
+#define MV_SWITCHPORT_BASE (MV_BASE + 0x8)
+#define MV_SWITCHPORT(_n) (MV_SWITCHPORT_BASE + (_n))
+#define MV_SWITCHREGS (MV_BASE + 0xf)
+
+enum {
+ MV_PHY_CONTROL = 0x00,
+ MV_PHY_STATUS = 0x01,
+ MV_PHY_IDENT0 = 0x02,
+ MV_PHY_IDENT1 = 0x03,
+ MV_PHY_ANEG = 0x04,
+ MV_PHY_LINK_ABILITY = 0x05,
+ MV_PHY_ANEG_EXPAND = 0x06,
+ MV_PHY_XMIT_NEXTP = 0x07,
+ MV_PHY_LINK_NEXTP = 0x08,
+ MV_PHY_CONTROL1 = 0x10,
+ MV_PHY_STATUS1 = 0x11,
+ MV_PHY_INTR_EN = 0x12,
+ MV_PHY_INTR_STATUS = 0x13,
+ MV_PHY_INTR_PORT = 0x14,
+ MV_PHY_RECV_COUNTER = 0x15,
+ MV_PHY_LED_PARALLEL = 0x16,
+ MV_PHY_LED_STREAM = 0x17,
+ MV_PHY_LED_CTRL = 0x18,
+ MV_PHY_LED_OVERRIDE = 0x19,
+ MV_PHY_VCT_CTRL = 0x1a,
+ MV_PHY_VCT_STATUS = 0x1b,
+ MV_PHY_CONTROL2 = 0x1e
+};
+#define MV_PHYREG(_type, _port) MV_PHYPORT(_port), MV_PHY_##_type
+
+enum {
+ MV_PORT_STATUS = 0x00,
+ MV_PORT_IDENT = 0x03,
+ MV_PORT_CONTROL = 0x04,
+ MV_PORT_VLANMAP = 0x06,
+ MV_PORT_ASSOC = 0x0b,
+ MV_PORT_RXCOUNT = 0x10,
+ MV_PORT_TXCOUNT = 0x11,
+};
+#define MV_PORTREG(_type, _port) MV_SWITCHPORT(_port), MV_PORT_##_type
+
+enum {
+ MV_PORTCTRL_BLOCK = (1 << 0),
+ MV_PORTCTRL_LEARN = (2 << 0),
+ MV_PORTCTRL_ENABLED = (3 << 0),
+ MV_PORTCTRL_VLANTUN = (1 << 7), /* Enforce VLANs on packets */
+ MV_PORTCTRL_RXTR = (1 << 8), /* Enable Marvell packet trailer for ingress */
+ MV_PORTCTRL_TXTR = (1 << 14), /* Enable Marvell packet trailer for egress */
+ MV_PORTCTRL_FORCEFL = (1 << 15), /* force flow control */
+};
+
+#define MV_PORTVLAN_ID(_n) (((_n) & 0xf) << 12)
+#define MV_PORTVLAN_PORTS(_n) ((_n) & 0x3f)
+
+#define MV_PORTASSOC_PORTS(_n) ((_n) & 0x1f)
+#define MV_PORTASSOC_MONITOR (1 << 15)
+
+enum {
+ MV_SWITCH_MAC0 = 0x01,
+ MV_SWITCH_MAC1 = 0x02,
+ MV_SWITCH_MAC2 = 0x03,
+ MV_SWITCH_CTRL = 0x04,
+ MV_SWITCH_ATU_CTRL = 0x0a,
+ MV_SWITCH_ATU_OP = 0x0b,
+ MV_SWITCH_ATU_DATA = 0x0c,
+ MV_SWITCH_ATU_MAC0 = 0x0d,
+ MV_SWITCH_ATU_MAC1 = 0x0e,
+ MV_SWITCH_ATU_MAC2 = 0x0f,
+};
+#define MV_SWITCHREG(_type) MV_SWITCHREGS, MV_SWITCH_##_type
+
+enum {
+#define MV_ATUCTL_AGETIME(_n) ((((_n) / 16) & 0xff) << 4)
+ MV_ATUCTL_ATU_256 = (0 << 12),
+ MV_ATUCTL_ATU_512 = (1 << 12),
+ MV_ATUCTL_ATU_1K = (2 << 12),
+ MV_ATUCTL_ATUMASK = (3 << 12),
+ MV_ATUCTL_NO_LEARN = (1 << 14),
+ MV_ATUCTL_RESET = (1 << 15),
+}
+
+#define MV_IDENT_MASK 0xfff0
+#define MV_IDENT_VALUE 0x0600
+
+#endif
projects / openwrt / svn-archive / openwrt.git / commitdiff