631 lines
15 KiB
C
631 lines
15 KiB
C
/*
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* Broadcom BCM5325E/536x switch configuration module
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*
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* Copyright (C) 2005 Felix Fietkau <nbd@nbd.name>
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* Copyright (C) 2008 Michael Buesch <mb@bu3sch.de>
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* Based on 'robocfg' by Oleg I. Vdovikin
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/if.h>
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#include <linux/if_arp.h>
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#include <linux/sockios.h>
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#include <linux/ethtool.h>
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#include <linux/mii.h>
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#include <linux/delay.h>
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#include <asm/uaccess.h>
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#include "switch-core.h"
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#include "etc53xx.h"
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#ifdef CONFIG_BCM47XX
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#include <nvram.h>
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#endif
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#define DRIVER_NAME "bcm53xx"
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#define DRIVER_VERSION "0.02"
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#define PFX "roboswitch: "
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#define ROBO_PHY_ADDR 0x1E /* robo switch phy address */
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#define ROBO_PHY_ADDR_TG3 0x01 /* Tigon3 PHY address */
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#define ROBO_PHY_ADDR_BCM63XX 0x00 /* BCM63XX PHY address */
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/* MII registers */
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#define REG_MII_PAGE 0x10 /* MII Page register */
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#define REG_MII_ADDR 0x11 /* MII Address register */
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#define REG_MII_DATA0 0x18 /* MII Data register 0 */
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#define REG_MII_PAGE_ENABLE 1
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#define REG_MII_ADDR_WRITE 1
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#define REG_MII_ADDR_READ 2
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/* Robo device ID register (in ROBO_MGMT_PAGE) */
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#define ROBO_DEVICE_ID 0x30
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#define ROBO_DEVICE_ID_5325 0x25 /* Faked */
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#define ROBO_DEVICE_ID_5395 0x95
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#define ROBO_DEVICE_ID_5397 0x97
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#define ROBO_DEVICE_ID_5398 0x98
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#define ROBO_DEVICE_ID_53115 0x3115
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/* Private et.o ioctls */
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#define SIOCGETCPHYRD (SIOCDEVPRIVATE + 9)
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#define SIOCSETCPHYWR (SIOCDEVPRIVATE + 10)
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/* Data structure for a Roboswitch device. */
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struct robo_switch {
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char *device; /* The device name string (ethX) */
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u16 devid; /* ROBO_DEVICE_ID_53xx */
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bool use_et;
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bool is_5350;
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u8 phy_addr; /* PHY address of the device */
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struct ifreq ifr;
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struct net_device *dev;
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unsigned char port[6];
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};
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/* Currently we can only have one device in the system. */
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static struct robo_switch robo;
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static int do_ioctl(int cmd, void *buf)
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{
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mm_segment_t old_fs = get_fs();
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int ret;
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if (buf != NULL)
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robo.ifr.ifr_data = (caddr_t) buf;
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set_fs(KERNEL_DS);
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
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ret = robo.dev->netdev_ops->ndo_do_ioctl(robo.dev, &robo.ifr, cmd);
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#else
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ret = robo.dev->do_ioctl(robo.dev, &robo.ifr, cmd);
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#endif
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set_fs(old_fs);
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return ret;
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}
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static u16 mdio_read(__u16 phy_id, __u8 reg)
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{
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if (robo.use_et) {
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int args[2] = { reg };
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if (phy_id != robo.phy_addr) {
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printk(KERN_ERR PFX
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"Access to real 'phy' registers unavaliable.\n"
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"Upgrade kernel driver.\n");
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return 0xffff;
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}
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if (do_ioctl(SIOCGETCPHYRD, &args) < 0) {
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printk(KERN_ERR PFX
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"[%s:%d] SIOCGETCPHYRD failed!\n", __FILE__, __LINE__);
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return 0xffff;
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}
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return args[1];
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} else {
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struct mii_ioctl_data *mii = (struct mii_ioctl_data *) &robo.ifr.ifr_data;
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mii->phy_id = phy_id;
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mii->reg_num = reg;
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if (do_ioctl(SIOCGMIIREG, NULL) < 0) {
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printk(KERN_ERR PFX
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"[%s:%d] SIOCGMIIREG failed!\n", __FILE__, __LINE__);
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return 0xffff;
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}
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return mii->val_out;
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}
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}
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static void mdio_write(__u16 phy_id, __u8 reg, __u16 val)
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{
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if (robo.use_et) {
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int args[2] = { reg, val };
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if (phy_id != robo.phy_addr) {
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printk(KERN_ERR PFX
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"Access to real 'phy' registers unavaliable.\n"
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"Upgrade kernel driver.\n");
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return;
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}
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if (do_ioctl(SIOCSETCPHYWR, args) < 0) {
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printk(KERN_ERR PFX
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"[%s:%d] SIOCGETCPHYWR failed!\n", __FILE__, __LINE__);
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return;
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}
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} else {
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struct mii_ioctl_data *mii = (struct mii_ioctl_data *)&robo.ifr.ifr_data;
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mii->phy_id = phy_id;
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mii->reg_num = reg;
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mii->val_in = val;
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if (do_ioctl(SIOCSMIIREG, NULL) < 0) {
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printk(KERN_ERR PFX
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"[%s:%d] SIOCSMIIREG failed!\n", __FILE__, __LINE__);
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return;
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}
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}
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}
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static int robo_reg(__u8 page, __u8 reg, __u8 op)
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{
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int i = 3;
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/* set page number */
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mdio_write(robo.phy_addr, REG_MII_PAGE,
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(page << 8) | REG_MII_PAGE_ENABLE);
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/* set register address */
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mdio_write(robo.phy_addr, REG_MII_ADDR,
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(reg << 8) | op);
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/* check if operation completed */
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while (i--) {
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if ((mdio_read(robo.phy_addr, REG_MII_ADDR) & 3) == 0)
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return 0;
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}
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printk(KERN_ERR PFX "[%s:%d] timeout in robo_reg!\n", __FILE__, __LINE__);
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return 0;
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}
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/*
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static void robo_read(__u8 page, __u8 reg, __u16 *val, int count)
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{
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int i;
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robo_reg(page, reg, REG_MII_ADDR_READ);
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for (i = 0; i < count; i++)
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val[i] = mdio_read(robo.phy_addr, REG_MII_DATA0 + i);
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}
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*/
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static __u16 robo_read16(__u8 page, __u8 reg)
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{
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robo_reg(page, reg, REG_MII_ADDR_READ);
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return mdio_read(robo.phy_addr, REG_MII_DATA0);
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}
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static __u32 robo_read32(__u8 page, __u8 reg)
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{
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robo_reg(page, reg, REG_MII_ADDR_READ);
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return mdio_read(robo.phy_addr, REG_MII_DATA0) +
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(mdio_read(robo.phy_addr, REG_MII_DATA0 + 1) << 16);
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}
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static void robo_write16(__u8 page, __u8 reg, __u16 val16)
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{
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/* write data */
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mdio_write(robo.phy_addr, REG_MII_DATA0, val16);
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robo_reg(page, reg, REG_MII_ADDR_WRITE);
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}
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static void robo_write32(__u8 page, __u8 reg, __u32 val32)
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{
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/* write data */
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mdio_write(robo.phy_addr, REG_MII_DATA0, val32 & 65535);
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mdio_write(robo.phy_addr, REG_MII_DATA0 + 1, val32 >> 16);
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robo_reg(page, reg, REG_MII_ADDR_WRITE);
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}
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/* checks that attached switch is 5325E/5350 */
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static int robo_vlan5350(void)
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{
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/* set vlan access id to 15 and read it back */
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__u16 val16 = 15;
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robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350, val16);
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/* 5365 will refuse this as it does not have this reg */
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return (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350) == val16);
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}
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static int robo_switch_enable(void)
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{
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unsigned int i, last_port;
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u16 val;
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#ifdef CONFIG_BCM47XX
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char buf[20];
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#endif
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val = robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE);
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if (!(val & (1 << 1))) {
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/* Unmanaged mode */
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val &= ~(1 << 0);
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/* With forwarding */
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val |= (1 << 1);
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robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, val);
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val = robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE);
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if (!(val & (1 << 1))) {
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printk("Failed to enable switch\n");
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return -EBUSY;
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}
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last_port = (robo.devid == ROBO_DEVICE_ID_5398) ?
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ROBO_PORT6_CTRL : ROBO_PORT3_CTRL;
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for (i = ROBO_PORT0_CTRL; i < last_port + 1; i++)
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robo_write16(ROBO_CTRL_PAGE, i, 0);
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}
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#ifdef CONFIG_BCM47XX
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/* WAN port LED, except for Netgear WGT634U */
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if (nvram_getenv("nvram_type", buf, sizeof(buf)) >= 0) {
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if (strcmp(buf, "cfe") != 0)
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robo_write16(ROBO_CTRL_PAGE, 0x16, 0x1F);
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}
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#endif
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return 0;
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}
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static void robo_switch_reset(void)
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{
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if ((robo.devid == ROBO_DEVICE_ID_5395) ||
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(robo.devid == ROBO_DEVICE_ID_5397) ||
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(robo.devid == ROBO_DEVICE_ID_5398)) {
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/* Trigger a software reset. */
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robo_write16(ROBO_CTRL_PAGE, 0x79, 0x83);
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mdelay(500);
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robo_write16(ROBO_CTRL_PAGE, 0x79, 0);
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}
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}
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static int robo_probe(char *devname)
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{
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__u32 phyid;
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unsigned int i;
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int err = 1;
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printk(KERN_INFO PFX "Probing device %s: ", devname);
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strcpy(robo.ifr.ifr_name, devname);
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
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if ((robo.dev = dev_get_by_name(devname)) == NULL) {
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#else
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if ((robo.dev = dev_get_by_name(&init_net, devname)) == NULL) {
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#endif
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printk("No such device\n");
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return 1;
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}
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robo.device = devname;
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for (i = 0; i < 5; i++)
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robo.port[i] = i;
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robo.port[5] = 8;
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/* try access using MII ioctls - get phy address */
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if (do_ioctl(SIOCGMIIPHY, NULL) < 0) {
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robo.use_et = 1;
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robo.phy_addr = ROBO_PHY_ADDR;
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} else {
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/* got phy address check for robo address */
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struct mii_ioctl_data *mii = (struct mii_ioctl_data *) &robo.ifr.ifr_data;
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if ((mii->phy_id != ROBO_PHY_ADDR) &&
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(mii->phy_id != ROBO_PHY_ADDR_BCM63XX) &&
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(mii->phy_id != ROBO_PHY_ADDR_TG3)) {
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printk("Invalid phy address (%d)\n", mii->phy_id);
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goto done;
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}
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robo.use_et = 0;
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/* The robo has a fixed PHY address that is different from the
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* Tigon3 and BCM63xx PHY address. */
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robo.phy_addr = ROBO_PHY_ADDR;
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}
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phyid = mdio_read(robo.phy_addr, 0x2) |
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(mdio_read(robo.phy_addr, 0x3) << 16);
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if (phyid == 0xffffffff || phyid == 0x55210022) {
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printk("No Robo switch in managed mode found, phy_id = 0x%08x\n", phyid);
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goto done;
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}
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/* Get the device ID */
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for (i = 0; i < 10; i++) {
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robo.devid = robo_read16(ROBO_MGMT_PAGE, ROBO_DEVICE_ID);
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if (robo.devid)
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break;
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udelay(10);
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}
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if (!robo.devid)
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robo.devid = ROBO_DEVICE_ID_5325; /* Fake it */
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robo.is_5350 = robo_vlan5350();
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robo_switch_reset();
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err = robo_switch_enable();
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if (err)
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goto done;
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err = 0;
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printk("found a 5%s%x!%s\n", robo.devid & 0xff00 ? "" : "3", robo.devid,
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robo.is_5350 ? " It's a 5350." : "");
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done:
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if (err) {
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dev_put(robo.dev);
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robo.dev = NULL;
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}
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return err;
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}
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static int handle_vlan_port_read(void *driver, char *buf, int nr)
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{
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__u16 val16;
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int len = 0;
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int j;
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val16 = (nr) /* vlan */ | (0 << 12) /* read */ | (1 << 13) /* enable */;
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if (robo.is_5350) {
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u32 val32;
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robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350, val16);
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/* actual read */
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val32 = robo_read32(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
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if ((val32 & (1 << 20)) /* valid */) {
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for (j = 0; j < 6; j++) {
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if (val32 & (1 << j)) {
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len += sprintf(buf + len, "%d", j);
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if (val32 & (1 << (j + 6))) {
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if (j == 5) buf[len++] = 'u';
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} else {
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buf[len++] = 't';
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if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
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buf[len++] = '*';
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}
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buf[len++] = '\t';
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}
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}
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len += sprintf(buf + len, "\n");
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}
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} else {
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robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
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/* actual read */
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val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_READ);
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if ((val16 & (1 << 14)) /* valid */) {
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for (j = 0; j < 6; j++) {
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if (val16 & (1 << j)) {
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len += sprintf(buf + len, "%d", j);
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if (val16 & (1 << (j + 7))) {
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if (j == 5) buf[len++] = 'u';
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} else {
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buf[len++] = 't';
|
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if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr)
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buf[len++] = '*';
|
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}
|
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buf[len++] = '\t';
|
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}
|
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}
|
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len += sprintf(buf + len, "\n");
|
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}
|
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}
|
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|
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buf[len] = '\0';
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|
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return len;
|
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}
|
|
|
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static int handle_vlan_port_write(void *driver, char *buf, int nr)
|
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{
|
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switch_driver *d = (switch_driver *) driver;
|
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switch_vlan_config *c = switch_parse_vlan(d, buf);
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int j;
|
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__u16 val16;
|
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|
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if (c == NULL)
|
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return -EINVAL;
|
|
|
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for (j = 0; j < d->ports; j++) {
|
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if ((c->untag | c->pvid) & (1 << j))
|
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/* change default vlan tag */
|
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robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), nr);
|
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}
|
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|
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/* write config now */
|
|
|
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if (robo.devid != ROBO_DEVICE_ID_5325) {
|
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__u8 regoff = ((robo.devid == ROBO_DEVICE_ID_5395) ||
|
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(robo.devid == ROBO_DEVICE_ID_53115)) ? 0x20 : 0;
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|
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robo_write32(ROBO_ARLIO_PAGE, 0x63 + regoff, (c->untag << 9) | c->port);
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robo_write16(ROBO_ARLIO_PAGE, 0x61 + regoff, nr);
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robo_write16(ROBO_ARLIO_PAGE, 0x60 + regoff, 1 << 7);
|
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kfree(c);
|
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return 0;
|
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}
|
|
|
|
val16 = (nr) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
|
|
if (robo.is_5350) {
|
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robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5350,
|
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(1 << 20) /* valid */ | (c->untag << 6) | c->port);
|
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robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350, val16);
|
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} else {
|
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robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE,
|
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(1 << 14) /* valid */ | (c->untag << 7) | c->port);
|
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robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
|
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}
|
|
|
|
kfree(c);
|
|
return 0;
|
|
}
|
|
|
|
#define set_switch(state) \
|
|
robo_write16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE, (robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & ~2) | (state ? 2 : 0));
|
|
|
|
static int handle_enable_read(void *driver, char *buf, int nr)
|
|
{
|
|
return sprintf(buf, "%d\n", (((robo_read16(ROBO_CTRL_PAGE, ROBO_SWITCH_MODE) & 2) == 2) ? 1 : 0));
|
|
}
|
|
|
|
static int handle_enable_write(void *driver, char *buf, int nr)
|
|
{
|
|
set_switch(buf[0] == '1');
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int handle_enable_vlan_read(void *driver, char *buf, int nr)
|
|
{
|
|
return sprintf(buf, "%d\n", (((robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0) & (1 << 7)) == (1 << 7)) ? 1 : 0));
|
|
}
|
|
|
|
static int handle_enable_vlan_write(void *driver, char *buf, int nr)
|
|
{
|
|
int disable = ((buf[0] != '1') ? 1 : 0);
|
|
|
|
robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL0, disable ? 0 :
|
|
(1 << 7) /* 802.1Q VLAN */ | (3 << 5) /* mac check and hash */);
|
|
robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL1, disable ? 0 :
|
|
(robo.devid == ROBO_DEVICE_ID_5325 ? (1 << 1) :
|
|
0) | (1 << 2) | (1 << 3)); /* RSV multicast */
|
|
|
|
if (robo.devid != ROBO_DEVICE_ID_5325)
|
|
return 0;
|
|
|
|
robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL4, disable ? 0 :
|
|
(1 << 6) /* drop invalid VID frames */);
|
|
robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_CTRL5, disable ? 0 :
|
|
(1 << 3) /* drop miss V table frames */);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int handle_reset(void *driver, char *buf, int nr)
|
|
{
|
|
switch_driver *d = (switch_driver *) driver;
|
|
int j;
|
|
__u16 val16;
|
|
|
|
/* disable switching */
|
|
set_switch(0);
|
|
|
|
/* reset vlans */
|
|
for (j = 0; j <= ((robo.is_5350) ? VLAN_ID_MAX5350 : VLAN_ID_MAX); j++) {
|
|
/* write config now */
|
|
val16 = (j) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */;
|
|
if (robo.is_5350)
|
|
robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5350, 0);
|
|
else
|
|
robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE, 0);
|
|
robo_write16(ROBO_VLAN_PAGE, robo.is_5350 ? ROBO_VLAN_TABLE_ACCESS_5350 :
|
|
ROBO_VLAN_TABLE_ACCESS,
|
|
val16);
|
|
}
|
|
|
|
/* reset ports to a known good state */
|
|
for (j = 0; j < d->ports; j++) {
|
|
robo_write16(ROBO_CTRL_PAGE, robo.port[j], 0x0000);
|
|
robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), 0);
|
|
}
|
|
|
|
/* enable switching */
|
|
set_switch(1);
|
|
|
|
/* enable vlans */
|
|
handle_enable_vlan_write(driver, "1", 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __init robo_init(void)
|
|
{
|
|
int notfound = 1;
|
|
char *device;
|
|
|
|
device = strdup("ethX");
|
|
for (device[3] = '0'; (device[3] <= '3') && notfound; device[3]++) {
|
|
if (! switch_device_registered (device))
|
|
notfound = robo_probe(device);
|
|
}
|
|
device[3]--;
|
|
|
|
if (notfound) {
|
|
kfree(device);
|
|
return -ENODEV;
|
|
} else {
|
|
static const switch_config cfg[] = {
|
|
{
|
|
.name = "enable",
|
|
.read = handle_enable_read,
|
|
.write = handle_enable_write
|
|
}, {
|
|
.name = "enable_vlan",
|
|
.read = handle_enable_vlan_read,
|
|
.write = handle_enable_vlan_write
|
|
}, {
|
|
.name = "reset",
|
|
.read = NULL,
|
|
.write = handle_reset
|
|
}, { NULL, },
|
|
};
|
|
static const switch_config vlan[] = {
|
|
{
|
|
.name = "ports",
|
|
.read = handle_vlan_port_read,
|
|
.write = handle_vlan_port_write
|
|
}, { NULL, },
|
|
};
|
|
switch_driver driver = {
|
|
.name = DRIVER_NAME,
|
|
.version = DRIVER_VERSION,
|
|
.interface = device,
|
|
.cpuport = 5,
|
|
.ports = 6,
|
|
.vlans = 16,
|
|
.driver_handlers = cfg,
|
|
.port_handlers = NULL,
|
|
.vlan_handlers = vlan,
|
|
};
|
|
if (robo.devid != ROBO_DEVICE_ID_5325) {
|
|
driver.ports = 9;
|
|
driver.cpuport = 8;
|
|
}
|
|
|
|
return switch_register_driver(&driver);
|
|
}
|
|
}
|
|
|
|
static void __exit robo_exit(void)
|
|
{
|
|
switch_unregister_driver(DRIVER_NAME);
|
|
if (robo.dev)
|
|
dev_put(robo.dev);
|
|
kfree(robo.device);
|
|
}
|
|
|
|
|
|
MODULE_AUTHOR("Felix Fietkau <openwrt@nbd.name>");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_init(robo_init);
|
|
module_exit(robo_exit);
|