1 files changed, 579 insertions, 0 deletions
diff --git a/package/switch/src/switch-adm.c b/package/switch/src/switch-adm.c
new file mode 100644
index 0000000000..083b6ebc47
--- /dev/null
+++ b/package/switch/src/switch-adm.c
@@ -0,0 +1,579 @@
+/*
+ * 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/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/delay.h>
+#include <asm/uaccess.h>
+
+#include "switch-core.h"
+#include "gpio.h"
+
+#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");
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,52)
+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);
+#else
+MODULE_PARM(eecs, "i");
+MODULE_PARM(eesk, "i");
+MODULE_PARM(eedi, "i");
+MODULE_PARM(eerc, "i");
+MODULE_PARM(force, "i");
+#endif
+
+/* 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)
+
+#if defined(BCMGPIO2) || defined(BCMGPIO)
+extern char *nvram_get(char *name);
+
+/* 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 getgpiopin(char *pin_name, unsigned int def_pin)
+{
+	char name[] = "gpioXXXX";
+	char *val;
+	unsigned int pin;
+
+	/* Go thru all possibilities till a match in pin name */
+	for (pin = 0; pin < 16; pin ++) {
+		sprintf(name, "gpio%d", pin);
+		val = nvram_get(name);
+		if (val && !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;
+
+	gpioout(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 */
+			gpioout(eesk, 0);
+			udelay(EECK_EDGE_TIME);
+
+			/* Output on rising edge */
+			gpioout(eedi, ((mask & buf[i]) ? eedi : 0));
+			udelay(EEDI_SETUP_TIME);
+
+			/* Clock high */
+			gpioout(eesk, eesk);
+			udelay(EECK_EDGE_TIME);
+		}
+	}
+
+	/* Clock low */
+	gpioout(eesk, 0);
+	udelay(EECK_EDGE_TIME);
+
+	if (cs)
+		gpioout(eecs, 0);
+}
+
+
+static void adm_read(int cs, char *buf, unsigned int bits)
+{
+	int i, len = (bits + 7) / 8;
+	__u8 mask;
+
+	gpioout(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 */
+			gpioout(eesk, 0);
+			udelay(EECK_EDGE_TIME);
+
+			/* Input on rising edge */
+			gp = gpioin();
+			if (gp & eedi)
+				byte |= mask;
+
+			/* Clock high */
+			gpioout(eesk, eesk);
+			udelay(EECK_EDGE_TIME);
+		}
+
+		*buf++ = byte;
+	}
+
+	/* Clock low */
+	gpioout(eesk, 0);
+	udelay(EECK_EDGE_TIME);
+
+	if (cs)
+		gpioout(eecs, 0);
+}
+
+
+/* Enable outputs with specified value to the chip */
+static void adm_enout(__u8 pins, __u8 val)
+{   
+	/* Prepare GPIO output value */
+	gpioout(pins, val);
+	
+	/* Enable GPIO outputs */
+	gpioouten(pins, pins);
+	udelay(EECK_EDGE_TIME);
+}
+
+
+/* Disable outputs to the chip */
+static void adm_disout(__u8 pins)
+{   
+	/* Disable GPIO outputs */
+	gpioouten(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 */
+		gpioout(eesk, eesk);
+		udelay(EECK_EDGE_TIME);
+
+		/* Clock low */
+		gpioout(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&62)<<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);
+
+	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)
+		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;
+
+#if defined(BCMGPIO2) || defined(BCMGPIO)
+	int boardflags = atoi(nvram_get("boardflags"));
+
+	if ((boardflags & 0x80) || force) {
+		ret = 1;
+
+		eecs = getgpiopin("adm_eecs", 2);
+		eesk = getgpiopin("adm_eesk", 3);
+		eedi = getgpiopin("adm_eedi", 4);
+		eerc = getgpiopin("adm_rc", 0);
+
+	} else if ((strcmp(nvram_get("boardtype") ?: "", "bcm94710dev") == 0) &&
+			(strncmp(nvram_get("boardnum") ?: "", "42", 2) == 0)) {
+		/* WRT54G v1.1 hack */
+		eecs = 2;
+		eesk = 3;
+		eedi = 5;
+
+		ret = 1;
+	} else
+		printk("BFL_ENETADM not set in boardflags. Use force=1 to ignore.\n");
+		
+	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,
+	};
+
+	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);