diff options
author | Felix Fietkau <nbd@openwrt.org> | 2010-06-26 20:42:58 +0000 |
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committer | Felix Fietkau <nbd@openwrt.org> | 2010-06-26 20:42:58 +0000 |
commit | da1bb88a2b900f0392b731ec47c5e1bff956fd8f (patch) | |
tree | 597146471e3eeafb4ba55e802e80b896770808ff /target/linux/generic-2.6/files/drivers/net/phy/mvswitch.c | |
parent | 6117c04c9416b295347fb45c37e430f01df1d0d9 (diff) | |
download | upstream-da1bb88a2b900f0392b731ec47c5e1bff956fd8f.tar.gz upstream-da1bb88a2b900f0392b731ec47c5e1bff956fd8f.tar.bz2 upstream-da1bb88a2b900f0392b731ec47c5e1bff956fd8f.zip |
rename target/linux/generic-2.6 to generic
SVN-Revision: 21952
Diffstat (limited to 'target/linux/generic-2.6/files/drivers/net/phy/mvswitch.c')
-rw-r--r-- | target/linux/generic-2.6/files/drivers/net/phy/mvswitch.c | 468 |
1 files changed, 0 insertions, 468 deletions
diff --git a/target/linux/generic-2.6/files/drivers/net/phy/mvswitch.c b/target/linux/generic-2.6/files/drivers/net/phy/mvswitch.c deleted file mode 100644 index c2f3245720..0000000000 --- a/target/linux/generic-2.6/files/drivers/net/phy/mvswitch.c +++ /dev/null @@ -1,468 +0,0 @@ -/* - * 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; -#ifdef HEADER_MODE - dev->flags |= IFF_PROMISC; -#endif - - /* 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->link = 1; - - /* 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->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); |