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Diffstat (limited to 'package/switch/src/switch-robo.c')
| -rw-r--r-- | package/switch/src/switch-robo.c | 484 |
1 files changed, 484 insertions, 0 deletions
diff --git a/package/switch/src/switch-robo.c b/package/switch/src/switch-robo.c new file mode 100644 index 0000000..32cf2b3 --- /dev/null +++ b/package/switch/src/switch-robo.c @@ -0,0 +1,484 @@ +/* + * Broadcom BCM5325E/536x switch configuration module + * + * Copyright (C) 2005 Felix Fietkau <nbd@nbd.name> + * Based on 'robocfg' by Oleg I. Vdovikin + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + */ + +#include <linux/config.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/if.h> +#include <linux/if_arp.h> +#include <linux/sockios.h> +#include <linux/ethtool.h> +#include <linux/mii.h> +#include <asm/uaccess.h> + +#include "switch-core.h" +#include "etc53xx.h" + +#define DRIVER_NAME "bcm53xx" +#define DRIVER_VERSION "0.01" + +#define ROBO_PHY_ADDR 0x1E /* robo switch phy address */ + +/* MII registers */ +#define REG_MII_PAGE 0x10 /* MII Page register */ +#define REG_MII_ADDR 0x11 /* MII Address register */ +#define REG_MII_DATA0 0x18 /* MII Data register 0 */ + +#define REG_MII_PAGE_ENABLE 1 +#define REG_MII_ADDR_WRITE 1 +#define REG_MII_ADDR_READ 2 + +/* Private et.o ioctls */ +#define SIOCGETCPHYRD (SIOCDEVPRIVATE + 9) +#define SIOCSETCPHYWR (SIOCDEVPRIVATE + 10) + +static char *device; +static int use_et = 0; +static int is_5350 = 0; +static struct ifreq ifr; +static struct net_device *dev; +static unsigned char port[6] = { 0, 1, 2, 3, 4, 8 }; + +static int do_ioctl(int cmd, void *buf) +{ + mm_segment_t old_fs = get_fs(); + int ret; + + if (buf != NULL) + ifr.ifr_data = (caddr_t) buf; + + set_fs(KERNEL_DS); + ret = dev->do_ioctl(dev, &ifr, cmd); + set_fs(old_fs); + + return ret; +} + +static u16 mdio_read(__u16 phy_id, __u8 reg) +{ + if (use_et) { + int args[2] = { reg }; + + if (phy_id != ROBO_PHY_ADDR) { + printk( + "Access to real 'phy' registers unavaliable.\n" + "Upgrade kernel driver.\n"); + + return 0xffff; + } + + + if (do_ioctl(SIOCGETCPHYRD, &args) < 0) { + printk("[%s:%d] SIOCGETCPHYRD failed!\n", __FILE__, __LINE__); + return 0xffff; + } + + return args[1]; + } else { + struct mii_ioctl_data *mii = (struct mii_ioctl_data *) &ifr.ifr_data; + mii->phy_id = phy_id; + mii->reg_num = reg; + + if (do_ioctl(SIOCGMIIREG, NULL) < 0) { + printk("[%s:%d] SIOCGMIIREG failed!\n", __FILE__, __LINE__); + + return 0xffff; + } + + return mii->val_out; + } +} + +static void mdio_write(__u16 phy_id, __u8 reg, __u16 val) +{ + if (use_et) { + int args[2] = { reg, val }; + + if (phy_id != ROBO_PHY_ADDR) { + printk( + "Access to real 'phy' registers unavaliable.\n" + "Upgrade kernel driver.\n"); + + return; + } + + if (do_ioctl(SIOCSETCPHYWR, args) < 0) { + printk("[%s:%d] SIOCGETCPHYWR failed!\n", __FILE__, __LINE__); + return; + } + } else { + struct mii_ioctl_data *mii = (struct mii_ioctl_data *)&ifr.ifr_data; + + mii->phy_id = phy_id; + mii->reg_num = reg; + mii->val_in = val; + + if (do_ioctl(SIOCSMIIREG, NULL) < 0) { + printk("[%s:%d] SIOCSMIIREG failed!\n", __FILE__, __LINE__); + return; + } + } +} + +static int robo_reg(__u8 page, __u8 reg, __u8 op) +{ + int i = 3; + + /* set page number */ + mdio_write(ROBO_PHY_ADDR, REG_MII_PAGE, + (page << 8) | REG_MII_PAGE_ENABLE); + + /* set register address */ + mdio_write(ROBO_PHY_ADDR, REG_MII_ADDR, + (reg << 8) | op); + + /* check if operation completed */ + while (i--) { + if ((mdio_read(ROBO_PHY_ADDR, REG_MII_ADDR) & 3) == 0) + return 0; + } + + printk("[%s:%d] timeout in robo_reg!\n", __FILE__, __LINE__); + + return 0; +} + +/* +static void robo_read(__u8 page, __u8 reg, __u16 *val, int count) +{ + int i; + + robo_reg(page, reg, REG_MII_ADDR_READ); + + for (i = 0; i < count; i++) + val[i] = mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + i); +} +*/ + +static __u16 robo_read16(__u8 page, __u8 reg) +{ + robo_reg(page, reg, REG_MII_ADDR_READ); + + return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0); +} + +static __u32 robo_read32(__u8 page, __u8 reg) +{ + robo_reg(page, reg, REG_MII_ADDR_READ); + + return mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0) + + (mdio_read(ROBO_PHY_ADDR, REG_MII_DATA0 + 1) << 16); +} + +static void robo_write16(__u8 page, __u8 reg, __u16 val16) +{ + /* write data */ + mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val16); + + robo_reg(page, reg, REG_MII_ADDR_WRITE); +} + +static void robo_write32(__u8 page, __u8 reg, __u32 val32) +{ + /* write data */ + mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0, val32 & 65535); + mdio_write(ROBO_PHY_ADDR, REG_MII_DATA0 + 1, val32 >> 16); + + robo_reg(page, reg, REG_MII_ADDR_WRITE); +} + +/* checks that attached switch is 5325E/5350 */ +static int robo_vlan5350(void) +{ + /* set vlan access id to 15 and read it back */ + __u16 val16 = 15; + robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350, val16); + + /* 5365 will refuse this as it does not have this reg */ + return (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350) == val16); +} + + + +static int robo_probe(char *devname) +{ + struct ethtool_drvinfo info; +/* + int i; +*/ + __u32 phyid; + + printk("Probing device %s: ", devname); + strcpy(ifr.ifr_name, devname); + + if ((dev = dev_get_by_name(devname)) == NULL) { + printk("No such device\n"); + return 1; + } + + info.cmd = ETHTOOL_GDRVINFO; + if (do_ioctl(SIOCETHTOOL, (void *) &info) < 0) { + printk("SIOCETHTOOL: not supported\n"); + return 1; + } + + /* try access using MII ioctls - get phy address */ + if (do_ioctl(SIOCGMIIPHY, NULL) < 0) { + use_et = 1; + } else { + /* got phy address check for robo address */ + struct mii_ioctl_data *mii = (struct mii_ioctl_data *) &ifr.ifr_data; + if (mii->phy_id != ROBO_PHY_ADDR) { + printk("Invalid phy address (%d)\n", mii->phy_id); + return 1; + } + } + + phyid = mdio_read(ROBO_PHY_ADDR, 0x2) | + (mdio_read(ROBO_PHY_ADDR, 0x3) << 16); + + if (phyid == 0xffffffff || phyid == 0x55210022) { + printk("No Robo switch in managed mode found\n"); + return 1; + } + + is_5350 = robo_vlan5350(); + + printk("found!\n"); + return 0; +} + + +static int handle_vlan_port_read(void *driver, char *buf, int nr) +{ + __u16 val16; + int len = 0; + int j; + + val16 = (nr) /* vlan */ | (0 << 12) /* read */ | (1 << 13) /* enable */; + + if (is_5350) { + u32 val32; + robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350, val16); + /* actual read */ + val32 = robo_read32(ROBO_VLAN_PAGE, ROBO_VLAN_READ); + if ((val32 & (1 << 20)) /* valid */) { + for (j = 0; j < 6; j++) { + if (val32 & (1 << j)) { + len += sprintf(buf + len, "%d", j); + if (val32 & (1 << (j + 6))) { + if (j == 5) buf[len++] = 'u'; + } else { + buf[len++] = 't'; + if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr) + buf[len++] = '*'; + } + buf[len++] = '\t'; + } + } + len += sprintf(buf + len, "\n"); + } + } else { + robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16); + /* actual read */ + val16 = robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_READ); + if ((val16 & (1 << 14)) /* valid */) { + for (j = 0; j < 6; j++) { + if (val16 & (1 << j)) { + len += sprintf(buf + len, "%d", j); + if (val16 & (1 << (j + 7))) { + if (j == 5) buf[len++] = 'u'; + } else { + buf[len++] = 't'; + if (robo_read16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1)) == nr) + buf[len++] = '*'; + } + buf[len++] = '\t'; + } + } + len += sprintf(buf + len, "\n"); + } + } + + buf[len] = '\0'; + + return len; +} + +static int handle_vlan_port_write(void *driver, char *buf, int nr) +{ + switch_driver *d = (switch_driver *) driver; + switch_vlan_config *c = switch_parse_vlan(d, buf); + int j; + __u16 val16; + + if (c == NULL) + return -EINVAL; + + for (j = 0; j < d->ports; j++) { + if ((c->untag | c->pvid) & (1 << j)) + /* change default vlan tag */ + robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_PORT0_DEF_TAG + (j << 1), nr); + } + + /* write config now */ + val16 = (nr) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */; + if (is_5350) { + robo_write32(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE_5350, + (1 << 20) /* valid */ | (c->untag << 6) | c->port); + robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS_5350, val16); + } else { + robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_WRITE, + (1 << 14) /* valid */ | (c->untag << 7) | c->port); + robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16); + } + + 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 : + (1 << 1) | (1 << 2) | (1 << 3) /* RSV multicast */); + 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; + switch_vlan_config *c = switch_parse_vlan(d, buf); + int j; + __u16 val16; + + if (c == NULL) + return -EINVAL; + + /* disable switching */ + set_switch(0); + + /* reset vlans */ + for (j = 0; j <= (is_5350 ? VLAN_ID_MAX5350 : VLAN_ID_MAX); j++) { + /* write config now */ + val16 = (j) /* vlan */ | (1 << 12) /* write */ | (1 << 13) /* enable */; + if (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, (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, 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; + + device = strdup("ethX"); + for (device[3] = '0'; (device[3] <= '3') && notfound; device[3]++) { + notfound = robo_probe(device); + } + device[3]--; + + if (notfound) { + kfree(device); + return -ENODEV; + } else { + switch_config cfg[] = { + {"enable", handle_enable_read, handle_enable_write}, + {"enable_vlan", handle_enable_vlan_read, handle_enable_vlan_write}, + {"reset", NULL, handle_reset}, + {NULL, NULL, NULL} + }; + switch_config vlan[] = { + {"ports", handle_vlan_port_read, handle_vlan_port_write}, + {NULL, NULL, 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, + }; + + return switch_register_driver(&driver); + } +} + +static void __exit robo_exit(void) +{ + switch_unregister_driver(DRIVER_NAME); + kfree(device); +} + + +MODULE_AUTHOR("Felix Fietkau <openwrt@nbd.name>"); +MODULE_LICENSE("GPL"); + +module_init(robo_init); +module_exit(robo_exit); |