diff options
Diffstat (limited to 'package/kernel/switch/src/switch-adm.c')
| -rw-r--r-- | package/kernel/switch/src/switch-adm.c | 596 |
1 files changed, 0 insertions, 596 deletions
diff --git a/package/kernel/switch/src/switch-adm.c b/package/kernel/switch/src/switch-adm.c deleted file mode 100644 index 8c0ddc6..0000000 --- a/package/kernel/switch/src/switch-adm.c +++ /dev/null @@ -1,596 +0,0 @@ -/* - * ADMTEK Adm6996 switch configuration module - * - * Copyright (C) 2005 Felix Fietkau <nbd@nbd.name> - * - * Partially based on Broadcom Home Networking Division 10/100 Mbit/s - * Ethernet Device Driver (from Montavista 2.4.20_mvl31 Kernel). - * Copyright (C) 2004 Broadcom Corporation - * - * adm_rreg function from adm6996 - * Copyright (C) 2004 Nikki Chumakov <nikki@gattaca.ru> - * - * 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/module.h> -#include <linux/init.h> -#include <linux/if.h> -#include <linux/if_arp.h> -#include <linux/sockios.h> -#include <linux/delay.h> -#include <asm/uaccess.h> - -#include "switch-core.h" -#include "gpio.h" - -#ifdef CONFIG_BCM47XX -#include <bcm47xx_nvram.h> -#endif - -#define DRIVER_NAME "adm6996" -#define DRIVER_VERSION "0.01" - -static int eecs = 0; -static int eesk = 0; -static int eedi = 0; -static int eerc = 0; -static int force = 0; - -MODULE_AUTHOR("Felix Fietkau <openwrt@nbd.name>"); -MODULE_LICENSE("GPL"); -module_param(eecs, int, 0); -module_param(eesk, int, 0); -module_param(eedi, int, 0); -module_param(eerc, int, 0); -module_param(force, int, 0); - -/* Minimum timing constants */ -#define EECK_EDGE_TIME 3 /* 3us - max(adm 2.5us, 93c 1us) */ -#define EEDI_SETUP_TIME 1 /* 1us - max(adm 10ns, 93c 400ns) */ -#define EECS_SETUP_TIME 1 /* 1us - max(adm no, 93c 200ns) */ - -/* Handy macros for writing fixed length values */ -#define adm_write8(cs, b) { __u8 val = (__u8) (b); adm_write(cs, &val, sizeof(val)*8); } -#define adm_write16(cs, w) { __u16 val = hton16(w); adm_write(cs, (__u8 *)&val, sizeof(val)*8); } -#define adm_write32(cs, i) { uint32 val = hton32(i); adm_write(cs, (__u8 *)&val, sizeof(val)*8); } - -#define atoi(str) simple_strtoul(((str != NULL) ? str : ""), NULL, 0) - -#ifdef CONFIG_BCM47XX - -/* Return gpio pin number assigned to the named pin */ -/* -* Variable should be in format: -* -* gpio<N>=pin_name -* -* 'def_pin' is returned if there is no such variable found. -*/ -static unsigned int get_gpiopin(char *pin_name, unsigned int def_pin) -{ - char name[] = "gpioXXXX"; - char val[10]; - unsigned int pin; - - /* Go thru all possibilities till a match in pin name */ - for (pin = 0; pin < 16; pin ++) { - sprintf(name, "gpio%d", pin); - if (bcm47xx_nvram_getenv(name, val, sizeof(val)) >= 0) { - if (!strcmp(val, pin_name)) - return pin; - } - } - return def_pin; -} -#endif - - -static void adm_write(int cs, char *buf, unsigned int bits) -{ - int i, len = (bits + 7) / 8; - __u8 mask; - - bcm47xx_gpio_out(eecs, (cs ? eecs : 0)); - udelay(EECK_EDGE_TIME); - - /* Byte assemble from MSB to LSB */ - for (i = 0; i < len; i++) { - /* Bit bang from MSB to LSB */ - for (mask = 0x80; mask && bits > 0; mask >>= 1, bits --) { - /* Clock low */ - bcm47xx_gpio_out(eesk, 0); - udelay(EECK_EDGE_TIME); - - /* Output on rising edge */ - bcm47xx_gpio_out(eedi, ((mask & buf[i]) ? eedi : 0)); - udelay(EEDI_SETUP_TIME); - - /* Clock high */ - bcm47xx_gpio_out(eesk, eesk); - udelay(EECK_EDGE_TIME); - } - } - - /* Clock low */ - bcm47xx_gpio_out(eesk, 0); - udelay(EECK_EDGE_TIME); - - if (cs) - bcm47xx_gpio_out(eecs, 0); -} - - -static void adm_read(int cs, char *buf, unsigned int bits) -{ - int i, len = (bits + 7) / 8; - __u8 mask; - - bcm47xx_gpio_out(eecs, (cs ? eecs : 0)); - udelay(EECK_EDGE_TIME); - - /* Byte assemble from MSB to LSB */ - for (i = 0; i < len; i++) { - __u8 byte; - - /* Bit bang from MSB to LSB */ - for (mask = 0x80, byte = 0; mask && bits > 0; mask >>= 1, bits --) { - __u8 gp; - - /* Clock low */ - bcm47xx_gpio_out(eesk, 0); - udelay(EECK_EDGE_TIME); - - /* Input on rising edge */ - gp = bcm47xx_gpio_in(~0); - if (gp & eedi) - byte |= mask; - - /* Clock high */ - bcm47xx_gpio_out(eesk, eesk); - udelay(EECK_EDGE_TIME); - } - - *buf++ = byte; - } - - /* Clock low */ - bcm47xx_gpio_out(eesk, 0); - udelay(EECK_EDGE_TIME); - - if (cs) - bcm47xx_gpio_out(eecs, 0); -} - - -/* Enable outputs with specified value to the chip */ -static void adm_enout(__u8 pins, __u8 val) -{ - /* Prepare GPIO output value */ - bcm47xx_gpio_out(pins, val); - - /* Enable GPIO outputs */ - bcm47xx_gpio_outen(pins, pins); - udelay(EECK_EDGE_TIME); -} - - -/* Disable outputs to the chip */ -static void adm_disout(__u8 pins) -{ - /* Disable GPIO outputs */ - bcm47xx_gpio_outen(pins, 0); - udelay(EECK_EDGE_TIME); -} - - -/* Advance clock(s) */ -static void adm_adclk(int clocks) -{ - int i; - for (i = 0; i < clocks; i++) { - /* Clock high */ - bcm47xx_gpio_out(eesk, eesk); - udelay(EECK_EDGE_TIME); - - /* Clock low */ - bcm47xx_gpio_out(eesk, 0); - udelay(EECK_EDGE_TIME); - } -} - -static __u32 adm_rreg(__u8 table, __u8 addr) -{ - /* cmd: 01 10 T DD R RRRRRR */ - __u8 bits[6] = { - 0xFF, 0xFF, 0xFF, 0xFF, - (0x06 << 4) | ((table & 0x01) << 3 | (addr&64)>>6), - ((addr&63)<<2) - }; - - __u8 rbits[4]; - - /* Enable GPIO outputs with all pins to 0 */ - adm_enout((__u8)(eecs | eesk | eedi), 0); - - adm_write(0, bits, 46); - adm_disout((__u8)(eedi)); - adm_adclk(2); - adm_read (0, rbits, 32); - - /* Extra clock(s) required per datasheet */ - adm_adclk(2); - - /* Disable GPIO outputs */ - adm_disout((__u8)(eecs | eesk)); - - if (!table) /* EEPROM has 16-bit registers, but pumps out two registers in one request */ - return (addr & 0x01 ? (rbits[0]<<8) | rbits[1] : (rbits[2]<<8) | (rbits[3])); - else - return (rbits[0]<<24) | (rbits[1]<<16) | (rbits[2]<<8) | rbits[3]; -} - - - -/* Write chip configuration register */ -/* Follow 93c66 timing and chip's min EEPROM timing requirement */ -void -adm_wreg(__u8 addr, __u16 val) -{ - /* cmd(27bits): sb(1) + opc(01) + addr(bbbbbbbb) + data(bbbbbbbbbbbbbbbb) */ - __u8 bits[4] = { - (0x05 << 5) | (addr >> 3), - (addr << 5) | (__u8)(val >> 11), - (__u8)(val >> 3), - (__u8)(val << 5) - }; - - /* Enable GPIO outputs with all pins to 0 */ - adm_enout((__u8)(eecs | eesk | eedi), 0); - - /* Write cmd. Total 27 bits */ - adm_write(1, bits, 27); - - /* Extra clock(s) required per datasheet */ - adm_adclk(2); - - /* Disable GPIO outputs */ - adm_disout((__u8)(eecs | eesk | eedi)); -} - - -/* Port configuration registers */ -static int port_conf[] = { 0x01, 0x03, 0x05, 0x07, 0x08, 0x09 }; - -/* Bits in VLAN port mapping */ -static int vlan_ports[] = { 1 << 0, 1 << 2, 1 << 4, 1 << 6, 1 << 7, 1 << 8 }; - -static int handle_vlan_port_read(void *driver, char *buf, int nr) -{ - int ports, i, c, len = 0; - - if ((nr < 0) || (nr > 15)) - return 0; - - /* Get VLAN port map */ - ports = adm_rreg(0, 0x13 + nr); - - for (i = 0; i <= 5; i++) { - if (ports & vlan_ports[i]) { - c = adm_rreg(0, port_conf[i]); - - len += sprintf(buf + len, "%d", i); - if (c & (1 << 4)) { - buf[len++] = 't'; - if (((c & (0xf << 10)) >> 10) == nr) - buf[len++] = '*'; - } else if (i == 5) - buf[len++] = 'u'; - - buf[len++] = '\t'; - } - } - len += sprintf(buf + len, "\n"); - - return len; -} - -static int handle_vlan_port_write(void *driver, char *buf, int nr) -{ - int i, cfg, ports; - switch_driver *d = (switch_driver *) driver; - switch_vlan_config *c = switch_parse_vlan(d, buf); - - if (c == NULL) - return -1; - - ports = adm_rreg(0, 0x13 + nr); - for (i = 0; i < d->ports; i++) { - if (c->port & (1 << i)) { - ports |= vlan_ports[i]; - - cfg = adm_rreg(0, port_conf[i]); - - /* Tagging */ - if (c->untag & (1 << i)) - cfg &= ~(1 << 4); - else - cfg |= (1 << 4); - - if ((c->untag | c->pvid) & (1 << i)) { - cfg = (cfg & ~(0xf << 10)) | (nr << 10); - } - - adm_wreg(port_conf[i], (__u16) cfg); - } else { - ports &= ~(vlan_ports[i]); - } - } - adm_wreg(0x13 + nr, (__u16) ports); - - kfree(c); - return 0; -} - -static int handle_port_enable_read(void *driver, char *buf, int nr) -{ - return sprintf(buf, "%d\n", ((adm_rreg(0, port_conf[nr]) & (1 << 5)) ? 0 : 1)); -} - -static int handle_port_enable_write(void *driver, char *buf, int nr) -{ - int reg = adm_rreg(0, port_conf[nr]); - - if (buf[0] == '0') - reg |= (1 << 5); - else if (buf[0] == '1') - reg &= ~(1 << 5); - else return -1; - - adm_wreg(port_conf[nr], (__u16) reg); - return 0; -} - -static int handle_port_media_read(void *driver, char *buf, int nr) -{ - int len; - int media = 0; - int reg = adm_rreg(0, port_conf[nr]); - - if (reg & (1 << 1)) - media |= SWITCH_MEDIA_AUTO; - if (reg & (1 << 2)) - media |= SWITCH_MEDIA_100; - if (reg & (1 << 3)) - media |= SWITCH_MEDIA_FD; - - len = switch_print_media(buf, media); - return len + sprintf(buf + len, "\n"); -} - -static int handle_port_media_write(void *driver, char *buf, int nr) -{ - int media = switch_parse_media(buf); - int reg = adm_rreg(0, port_conf[nr]); - - if (media < 0 || media & SWITCH_MEDIA_1000) - return -1; - - reg &= ~((1 << 1) | (1 << 2) | (1 << 3)); - if (media & SWITCH_MEDIA_AUTO) - reg |= 1 << 1; - if (media & SWITCH_MEDIA_100) - reg |= 1 << 2; - if (media & SWITCH_MEDIA_FD) - reg |= 1 << 3; - - adm_wreg(port_conf[nr], reg); - - return 0; -} - -static int handle_vlan_enable_read(void *driver, char *buf, int nr) -{ - return sprintf(buf, "%d\n", ((adm_rreg(0, 0x11) & (1 << 5)) ? 1 : 0)); -} - -static int handle_vlan_enable_write(void *driver, char *buf, int nr) -{ - int reg = adm_rreg(0, 0x11); - - if (buf[0] == '1') - reg |= (1 << 5); - else if (buf[0] == '0') - reg &= ~(1 << 5); - else return -1; - - adm_wreg(0x11, (__u16) reg); - return 0; -} - -static int handle_reset(void *driver, char *buf, int nr) -{ - int i; - u32 cfg; - - /* - * Reset sequence: RC high->low(100ms)->high(30ms) - * - * WAR: Certain boards don't have the correct power on - * reset logic therefore we must explicitly perform the - * sequence in software. - */ - if (eerc) { - /* Keep RC high for at least 20ms */ - adm_enout(eerc, eerc); - for (i = 0; i < 20; i ++) - udelay(1000); - /* Keep RC low for at least 100ms */ - adm_enout(eerc, 0); - for (i = 0; i < 100; i++) - udelay(1000); - /* Set default configuration */ - adm_enout((__u8)(eesk | eedi), eesk); - /* Keep RC high for at least 30ms */ - adm_enout(eerc, eerc); - for (i = 0; i < 30; i++) - udelay(1000); - /* Leave RC high and disable GPIO outputs */ - adm_disout((__u8)(eecs | eesk | eedi)); - - } - - /* set up initial configuration for cpu port */ - cfg = (0x8000 | /* Auto MDIX */ - (0xf << 10) | /* PVID */ - (1 << 4) | /* Tagging */ - 0xf); /* full duplex, 100Mbps, auto neg, flow ctrl */ - adm_wreg(port_conf[5], cfg); - - /* vlan mode select register (0x11): vlan on, mac clone */ - adm_wreg(0x11, 0xff30); - - return 0; -} - -static int handle_registers(void *driver, char *buf, int nr) -{ - int i, len = 0; - - for (i = 0; i <= 0x33; i++) { - len += sprintf(buf + len, "0x%02x: 0x%04x\n", i, adm_rreg(0, i)); - } - - return len; -} - -static int handle_counters(void *driver, char *buf, int nr) -{ - int i, len = 0; - - for (i = 0; i <= 0x3c; i++) { - len += sprintf(buf + len, "0x%02x: 0x%08x\n", i, adm_rreg(1, i)); - } - - return len; -} - -static int detect_adm(void) -{ - int ret = 0; - -#ifdef CONFIG_BCM47XX - char buf[20]; - int boardflags = 0; - int boardnum = 0; - - if (bcm47xx_nvram_getenv("boardflags", buf, sizeof(buf)) >= 0) - boardflags = simple_strtoul(buf, NULL, 0); - - if (bcm47xx_nvram_getenv("boardnum", buf, sizeof(buf)) >= 0) - boardnum = simple_strtoul(buf, NULL, 0); - - if ((boardnum == 44) && (boardflags == 0x0388)) { /* Trendware TEW-411BRP+ */ - ret = 1; - - eecs = get_gpiopin("adm_eecs", 2); - eesk = get_gpiopin("adm_eesk", 3); - eedi = get_gpiopin("adm_eedi", 4); - eerc = get_gpiopin("adm_rc", 5); - - } else if ((boardflags & 0x80) || force) { - ret = 1; - - eecs = get_gpiopin("adm_eecs", 2); - eesk = get_gpiopin("adm_eesk", 3); - eedi = get_gpiopin("adm_eedi", 4); - eerc = get_gpiopin("adm_rc", 0); - - } else if (bcm47xx_nvram_getenv("boardtype", buf, sizeof(buf)) >= 0) { - if (strcmp(buf, "bcm94710dev") == 0) { - if (bcm47xx_nvram_getenv("boardnum", buf, sizeof(buf)) >= 0) { - if (strncmp(buf, "42", 2) == 0) { - /* WRT54G v1.1 hack */ - eecs = 2; - eesk = 3; - eedi = 5; - - ret = 1; - } - } - } - } - - if (eecs) - eecs = (1 << eecs); - if (eesk) - eesk = (1 << eesk); - if (eedi) - eedi = (1 << eedi); - if (eerc) - eerc = (1 << eerc); -#else - ret = 1; -#endif - - return ret; -} - -static int __init adm_init(void) -{ - switch_config cfg[] = { - {"registers", handle_registers, NULL}, - {"counters", handle_counters, NULL}, - {"reset", NULL, handle_reset}, - {"enable_vlan", handle_vlan_enable_read, handle_vlan_enable_write}, - {NULL, NULL, NULL} - }; - switch_config port[] = { - {"enable", handle_port_enable_read, handle_port_enable_write}, - {"media", handle_port_media_read, handle_port_media_write}, - {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: "eth0", - ports: 6, - cpuport: 5, - vlans: 16, - driver_handlers: cfg, - port_handlers: port, - vlan_handlers: vlan, - }; - snprintf(driver.dev_name, SWITCH_NAME_BUFSZ, DRIVER_NAME); - - if (!detect_adm()) - return -ENODEV; - - return switch_register_driver(&driver); -} - -static void __exit adm_exit(void) -{ - switch_unregister_driver(DRIVER_NAME); -} - - -module_init(adm_init); -module_exit(adm_exit); |