Move files and patches to files-2.6.23 and patches-2.6.23

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11843 3c298f89-4303-0410-b956-a3cf2f4a3e73

8 files changed, 2639 insertions, 0 deletions

diff --git a/target/linux/rb532/files-2.6.23/drivers/block/rb500/Makefile b/target/linux/rb532/files-2.6.23/drivers/block/rb500/Makefile
new file mode 100644
index 000000000..3e14dc35b
--- /dev/null
+++ b/target/linux/rb532/files-2.6.23/drivers/block/rb500/Makefile
@@ -0,0 +1,3 @@
+## Makefile for the RB532 CF port
+
+obj-y		+= bdev.o ata.o
diff --git a/target/linux/rb532/files-2.6.23/drivers/block/rb500/ata.c b/target/linux/rb532/files-2.6.23/drivers/block/rb500/ata.c
new file mode 100644
index 000000000..31e6782fa
--- /dev/null
+++ b/target/linux/rb532/files-2.6.23/drivers/block/rb500/ata.c
@@ -0,0 +1,487 @@
+/* CF-mips driver
+   This is a block driver for the direct (mmaped) interface to the CF-slot,
+   found in Routerboard.com's RB532 board
+   See SDK provided from routerboard.com.
+   
+   Module adapted By P.Christeas <p_christeas@yahoo.com>, 2005-6.
+   Cleaned up and adapted to platform_device by Felix Fietkau <nbd@openwrt.org>
+
+   This work is redistributed under the terms of the GNU General Public License.
+*/
+
+#include <linux/kernel.h>	/* printk() */
+#include <linux/module.h>	/* module to be loadable */
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/pci.h>
+#include <linux/ioport.h>	/* request_mem_region() */
+
+#include <asm/gpio.h>
+#include <asm/unaligned.h>		/* ioremap() */
+#include <asm/io.h>		/* ioremap() */
+#include <asm/rc32434/rb.h>
+
+#include "ata.h"
+
+#define REQUEST_MEM_REGION 0
+#define DEBUG 1
+
+#if DEBUG
+#define DEBUGP printk
+#else
+#define DEBUGP(format, args...)
+#endif
+
+#define SECS	1000000		/* unit for wait_not_busy() is 1us */
+
+unsigned cf_head = 0;
+unsigned cf_cyl = 0;
+unsigned cf_spt = 0;
+unsigned cf_sectors = 0;
+static unsigned cf_block_size = 1;
+static void *baddr = 0;
+
+#define DBUF32 ((volatile u32 *)((unsigned long)dev->baddr | ATA_DBUF_OFFSET))
+
+
+static void cf_do_tasklet(unsigned long dev_l);
+
+
+static inline void wareg(u8 val, unsigned reg, struct cf_mips_dev* dev)
+{
+	writeb(val, dev->baddr + ATA_REG_OFFSET + reg);
+}
+
+static inline u8 rareg(unsigned reg, struct cf_mips_dev* dev)
+{
+	return readb(dev->baddr + ATA_REG_OFFSET + reg);
+}
+
+static inline int cfrdy(struct cf_mips_dev *dev)
+{
+	return gpio_get_value(dev->pin);
+}
+
+static inline void prepare_cf_irq(struct cf_mips_dev *dev)
+{
+	rb500_gpio_set_int_level(1, dev->pin);	/* interrupt on cf ready (not busy) */
+	rb500_gpio_set_int_status(0, dev->pin); 	/* clear interrupt status */
+}
+
+static inline int cf_present(struct cf_mips_dev* dev)
+{
+	/* TODO: read and configure CIS into memory mapped mode
+	 * TODO:   parse CISTPL_CONFIG on CF+ cards to get base address (0x200)
+	 * TODO:   maybe adjust power saving setting for Hitachi Microdrive
+	 */
+	int i;
+
+	/* setup CFRDY GPIO as input */
+	rb500_gpio_set_func(dev->pin, 0);
+	gpio_direction_input(dev->pin);
+
+	for (i = 0; i < 0x10; ++i) {
+		if (rareg(i,dev) != 0xff)
+			return 1;
+	}
+	return 0;
+}
+
+static inline int is_busy(struct cf_mips_dev *dev)
+{
+	return !cfrdy(dev);
+}
+
+static int wait_not_busy(int to_us, int wait_for_busy,struct cf_mips_dev *dev)
+{
+	int us_passed = 0;
+	if (wait_for_busy && !is_busy(dev)) {
+		/* busy must appear within 400ns,
+		 * but it may dissapear before we see it
+		 *  => must not wait for busy in a loop
+		 */
+		ndelay(400);
+	}
+
+	do {
+		if (us_passed)
+			udelay(1);	/* never reached in async mode */
+		if (!is_busy(dev)) {
+			if (us_passed > 1 * SECS) {
+				printk(KERN_WARNING "cf-mips:   not busy ok (after %dus)"
+				       ", status 0x%02x\n", us_passed, (unsigned) rareg(ATA_REG_ST,dev));
+			}
+			return CF_TRANS_OK;
+		}
+		if (us_passed == 1 * SECS) {
+			printk(KERN_WARNING "cf-mips: wait not busy %dus..\n", to_us);
+		}
+		if (dev->async_mode) {
+			dev->to_timer.expires = jiffies + (to_us * HZ / SECS);
+			dev->irq_enable_time = jiffies;
+			prepare_cf_irq(dev);
+			if (is_busy(dev)) {
+				add_timer(&dev->to_timer);
+				enable_irq(dev->irq);
+				return CF_TRANS_IN_PROGRESS;
+			}
+			continue;
+		}
+		++us_passed;
+	} while (us_passed < to_us);
+
+	printk(KERN_ERR "cf-mips:  wait not busy timeout (%dus)"
+	       ", status 0x%02x, state %d\n",
+	       to_us, (unsigned) rareg(ATA_REG_ST,dev), dev->tstate);
+	return CF_TRANS_FAILED;
+}
+
+static irqreturn_t cf_irq_handler(int irq, void *dev_id)
+{
+	/* While tasklet has not disabled irq, irq will be retried all the time
+	 * because of ILEVEL matching GPIO pin status => deadlock.
+	 * To avoid this, we change ILEVEL to 0.
+	 */
+	struct cf_mips_dev *dev=dev_id;
+
+	rb500_gpio_set_int_level(0, dev->pin);
+	rb500_gpio_set_int_status(0, dev->pin);
+	
+	del_timer(&dev->to_timer);
+	tasklet_schedule(&dev->tasklet);
+	return IRQ_HANDLED;
+}
+
+static int do_reset(struct cf_mips_dev *dev)
+{
+	printk(KERN_INFO "cf-mips: resetting..\n");
+
+	wareg(ATA_REG_DC_SRST, ATA_REG_DC,dev);
+	udelay(1);		/* FIXME: how long should we wait here? */
+	wareg(0, ATA_REG_DC,dev);
+
+	return wait_not_busy(30 * SECS, 1,dev);
+}
+
+static int set_multiple(struct cf_mips_dev *dev)
+{
+	if (dev->block_size <= 1)
+		return CF_TRANS_OK;
+
+	wareg(dev->block_size, ATA_REG_SC,dev);
+	wareg(ATA_REG_DH_BASE | ATA_REG_DH_LBA, ATA_REG_DH,dev);
+	wareg(ATA_CMD_SET_MULTIPLE, ATA_REG_CMD,dev);
+
+	return wait_not_busy(10 * SECS, 1,dev);
+}
+
+static int set_cmd(struct cf_mips_dev *dev)
+{
+	//DEBUGP(KERN_INFO "cf-mips: ata cmd 0x%02x\n", dev->tcmd);
+	// sector_count should be <=24 bits..
+	BUG_ON(dev->tsect_start>=0x10000000);
+	// This way, it addresses 2^24 * 512 = 128G
+
+	if (dev->tsector_count) {
+		wareg(dev->tsector_count & 0xff, ATA_REG_SC,dev);
+		wareg(dev->tsect_start & 0xff, ATA_REG_SN,dev);
+		wareg((dev->tsect_start >> 8) & 0xff, ATA_REG_CL,dev);
+		wareg((dev->tsect_start >> 16) & 0xff, ATA_REG_CH,dev);
+	}
+	wareg(((dev->tsect_start >> 24) & 0x0f) | ATA_REG_DH_BASE | ATA_REG_DH_LBA,
+	      ATA_REG_DH,dev);	/* select drive on all commands */
+	wareg(dev->tcmd, ATA_REG_CMD,dev);
+	return wait_not_busy(10 * SECS, 1,dev);
+}
+
+static int do_trans(struct cf_mips_dev *dev)
+{
+	int res;
+	unsigned st;
+	int transfered;
+	
+	//printk("do_trans: %d sectors left\n",dev->tsectors_left);
+	while (dev->tsectors_left) {
+		transfered = 0;
+
+		st = rareg(ATA_REG_ST,dev);
+		if (!(st & ATA_REG_ST_DRQ)) {
+			printk(KERN_ERR "cf-mips: do_trans without DRQ (status 0x%x)!\n", st);
+			if (st & ATA_REG_ST_ERR) {
+				int errId = rareg(ATA_REG_ERR,dev);
+				printk(KERN_ERR "cf-mips: %s error, status 0x%x, errid 0x%x\n",
+				       (dev->tread ? "read" : "write"), st, errId);
+			}
+			return CF_TRANS_FAILED;
+		}
+		do { /* Fill/read the buffer one block */
+			u32 *qbuf, *qend;
+			qbuf = (u32 *)dev->tbuf;
+			qend = qbuf + CF_SECT_SIZE / sizeof(u32);
+			if (dev->tread) {
+			    while (qbuf!=qend)
+				put_unaligned(*DBUF32,qbuf++);
+				//*(qbuf++) = *DBUF32;
+			}
+			else {
+			    while(qbuf!=qend)
+				*DBUF32 = get_unaligned(qbuf++);
+			}
+
+			dev->tsectors_left--;
+			dev->tbuf += CF_SECT_SIZE;
+			dev->tbuf_size -= CF_SECT_SIZE;
+			transfered++;
+		} while (transfered != dev->block_size && dev->tsectors_left > 0);
+
+		res = wait_not_busy(10 * SECS, 1,dev);
+		if (res != CF_TRANS_OK)
+			return res;
+	};
+
+	st = rareg(ATA_REG_ST,dev);
+	if (st & (ATA_REG_ST_DRQ | ATA_REG_ST_DWF | ATA_REG_ST_ERR)) {
+		if (st & ATA_REG_ST_DRQ) {
+			printk(KERN_ERR "cf-mips: DRQ after all %d sectors are %s"
+			       ", status 0x%x\n", dev->tsector_count, (dev->tread ? "read" : "written"), st);
+		} else if (st & ATA_REG_ST_DWF) {
+			printk(KERN_ERR "cf-mips: write fault, status 0x%x\n", st);
+		} else {
+			int errId = rareg(ATA_REG_ERR,dev);
+			printk(KERN_ERR "cf-mips: %s error, status 0x%x, errid 0x%x\n",
+			       (dev->tread ? "read" : "write"), st, errId);
+		}
+		return CF_TRANS_FAILED;
+	}
+	return CF_TRANS_OK;
+}
+
+static int cf_do_state(struct cf_mips_dev *dev)
+{
+	int res;
+	switch (dev->tstate) {	/* fall through everywhere */
+	case TS_IDLE:
+		dev->tstate = TS_READY;
+		if (is_busy(dev)) {
+			dev->tstate = TS_AFTER_RESET;
+			res = do_reset(dev);
+			if (res != CF_TRANS_OK)
+				break;
+		}
+	case TS_AFTER_RESET:
+		if (dev->tstate == TS_AFTER_RESET) {
+			dev->tstate = TS_READY;
+			res = set_multiple(dev);
+			if (res != CF_TRANS_OK)
+				break;
+		}
+	case TS_READY:
+		dev->tstate = TS_CMD;
+		res = set_cmd(dev);
+		if (res != CF_TRANS_OK)
+			break;;
+	case TS_CMD:
+		dev->tstate = TS_TRANS;
+	case TS_TRANS:
+		res = do_trans(dev);
+		break;
+	default:
+		printk(KERN_ERR "cf-mips: BUG: unknown tstate %d\n", dev->tstate);
+		return CF_TRANS_FAILED;
+	}
+	if (res != CF_TRANS_IN_PROGRESS)
+		dev->tstate = TS_IDLE;
+	return res;
+}
+
+static void cf_do_tasklet(unsigned long dev_l)
+{
+	struct cf_mips_dev* dev=(struct cf_mips_dev*) dev_l;
+	int res;
+
+	disable_irq(dev->irq);
+
+	if (dev->tstate == TS_IDLE)
+		return;		/* can happen when irq is first registered */
+
+#if 0
+	DEBUGP(KERN_WARNING "cf-mips:   not busy ok (tasklet)  status 0x%02x\n",
+	       (unsigned) rareg(ATA_REG_ST,dev));
+#endif
+
+	res = cf_do_state(dev);
+	if (res == CF_TRANS_IN_PROGRESS)
+		return;
+	cf_async_trans_done(dev,res);
+}
+
+static void cf_async_timeout(unsigned long dev_l)
+{
+	struct cf_mips_dev* dev=(struct cf_mips_dev*) dev_l;
+	disable_irq(dev->irq);
+	/* Perhaps send abort to the device? */
+	printk(KERN_ERR "cf-mips:  wait not busy timeout (%lus)"
+	       ", status 0x%02x, state %d\n",
+	       jiffies - dev->irq_enable_time, (unsigned) rareg(ATA_REG_ST,dev), dev->tstate);
+	dev->tstate = TS_IDLE;
+	cf_async_trans_done(dev,CF_TRANS_FAILED);
+}
+
+int cf_do_transfer(struct cf_mips_dev* dev,sector_t sector, unsigned long nsect, 
+	char* buffer, int is_write)
+{
+	BUG_ON(dev->tstate!=TS_IDLE);
+	if (nsect > ATA_MAX_SECT_PER_CMD) {
+		printk(KERN_WARNING "cf-mips: sector count %lu out of range\n",nsect);
+		return CF_TRANS_FAILED;
+	}
+	if (sector + nsect > dev->sectors) {
+		printk(KERN_WARNING "cf-mips: sector %lu out of range\n",sector);
+		return CF_TRANS_FAILED;
+	}
+	dev->tbuf = buffer;
+	dev->tbuf_size = nsect*512;
+	dev->tsect_start = sector;
+	dev->tsector_count = nsect;
+	dev->tsectors_left = dev->tsector_count;
+	dev->tread = (is_write)?0:1;
+	
+	dev->tcmd = (dev->block_size == 1 ?
+		(is_write ? ATA_CMD_WRITE_SECTORS : ATA_CMD_READ_SECTORS) :
+		(is_write ? ATA_CMD_WRITE_MULTIPLE : ATA_CMD_READ_MULTIPLE));
+
+	return cf_do_state(dev);
+}
+
+static int do_identify(struct cf_mips_dev *dev)
+{
+	u16 sbuf[CF_SECT_SIZE >> 1];
+ 	int res;
+	char tstr[17]; //serial
+	char tmp;
+	int i;
+	BUG_ON(dev->tstate!=TS_IDLE);
+	dev->tbuf = (char *) sbuf;
+	dev->tbuf_size = CF_SECT_SIZE;
+	dev->tsect_start = 0;
+	dev->tsector_count = 0;
+	dev->tsectors_left = 1;
+	dev->tread = 1;
+	dev->tcmd = ATA_CMD_IDENTIFY_DRIVE;
+
+	DEBUGP(KERN_INFO "cf-mips: identify drive..\n");
+	res = cf_do_state(dev);
+	if (res == CF_TRANS_IN_PROGRESS) {
+		printk(KERN_ERR "cf-mips: BUG: async identify cmd\n");
+		return CF_TRANS_FAILED;
+	}
+	if (res != CF_TRANS_OK)
+		return 0;
+
+	dev->head = sbuf[3];
+	dev->cyl = sbuf[1];
+	dev->spt = sbuf[6];
+	dev->sectors = ((unsigned long) sbuf[7] << 16) | sbuf[8];
+	dev->dtype=sbuf[0];
+	memcpy(tstr, &sbuf[12], 16);
+	tstr[16] = '\0';
+
+	/* Byte-swap the serial number */
+	for (i = 0; i<8; i++) {
+		tmp = tstr[i * 2];
+		tstr[i * 2] = tstr[i * 2 +1];
+		tstr[i * 2 + 1] = tmp;
+	}
+
+	printk(KERN_INFO "cf-mips: %s detected, C/H/S=%d/%d/%d sectors=%u (%uMB) Serial=%s\n",
+	       (sbuf[0] == 0x848A ? "CF card" : "ATA drive"), dev->cyl, dev->head,
+	       dev->spt, dev->sectors, dev->sectors >> 11, tstr);
+	return 1;
+}
+
+static void init_multiple(struct cf_mips_dev * dev)
+{
+	int res;
+	DEBUGP(KERN_INFO "cf-mips: detecting block size\n");
+
+	dev->block_size = 128;	/* max block size = 128 sectors (64KB) */
+	do {
+		wareg(dev->block_size, ATA_REG_SC,dev);
+		wareg(ATA_REG_DH_BASE | ATA_REG_DH_LBA, ATA_REG_DH,dev);
+		wareg(ATA_CMD_SET_MULTIPLE, ATA_REG_CMD,dev);
+
+		res = wait_not_busy(10 * SECS, 1,dev);
+		if (res != CF_TRANS_OK) {
+			printk(KERN_ERR "cf-mips: failed to detect block size: busy!\n");
+			dev->block_size = 1;
+			return;
+		}
+		if ((rareg(ATA_REG_ST,dev) & ATA_REG_ST_ERR) == 0)
+			break;
+		dev->block_size /= 2;
+	} while (dev->block_size > 1);
+
+	printk(KERN_INFO "cf-mips: multiple sectors = %d\n", dev->block_size);
+}
+
+int cf_init(struct cf_mips_dev *dev)
+{
+	tasklet_init(&dev->tasklet,cf_do_tasklet,(unsigned long)dev);
+	dev->baddr = ioremap_nocache((unsigned long)dev->base, CFDEV_BUF_SIZE);
+	if (!dev->baddr) {
+		printk(KERN_ERR "cf-mips: cf_init: ioremap for (%lx,%x) failed\n",
+		       (unsigned long) dev->base, CFDEV_BUF_SIZE);
+		return -EBUSY;
+	}
+
+	if (!cf_present(dev)) {
+		printk(KERN_WARNING "cf-mips: cf card not present\n");
+		iounmap(dev->baddr);
+		return -ENODEV;
+	}
+
+	if (do_reset(dev) != CF_TRANS_OK) {
+		printk(KERN_ERR "cf-mips: cf reset failed\n");
+		iounmap(dev->baddr);
+		return -EBUSY;
+	}
+
+	if (!do_identify(dev)) {
+		printk(KERN_ERR "cf-mips: cf identify failed\n");
+		iounmap(dev->baddr);
+		return -EBUSY;
+	}
+
+/*	set_apm_level(ATA_APM_WITH_STANDBY); */
+	init_multiple(dev);
+
+	init_timer(&dev->to_timer);
+	dev->to_timer.function = cf_async_timeout;
+	dev->to_timer.data = (unsigned long)dev;
+
+	prepare_cf_irq(dev);
+	if (request_irq(dev->irq, cf_irq_handler, 0, "CF Mips", dev)) {
+		printk(KERN_ERR "cf-mips: failed to get irq\n");
+		iounmap(dev->baddr);
+		return -EBUSY;
+	}
+	/* Disable below would be odd, because request will enable, and the tasklet
+	  will disable it itself */
+	//disable_irq(dev->irq);
+	
+	dev->async_mode = 1;
+
+	return 0;
+}
+
+void cf_cleanup(struct cf_mips_dev *dev)
+{
+	iounmap(dev->baddr);
+	free_irq(dev->irq, NULL);
+#if REQUEST_MEM_REGION
+	release_mem_region((unsigned long)dev->base, CFDEV_BUF_SIZE);
+#endif
+}
+
+
+/*eof*/
diff --git a/target/linux/rb532/files-2.6.23/drivers/block/rb500/ata.h b/target/linux/rb532/files-2.6.23/drivers/block/rb500/ata.h
new file mode 100644
index 000000000..15e882630
--- /dev/null
+++ b/target/linux/rb532/files-2.6.23/drivers/block/rb500/ata.h
@@ -0,0 +1,143 @@
+/* CF-mips driver
+   This is a block driver for the direct (mmaped) interface to the CF-slot,
+   found in Routerboard.com's RB532 board
+   See SDK provided from routerboard.com.
+   
+   Module adapted By P.Christeas <p_christeas@yahoo.com>, 2005-6.
+   Cleaned up and adapted to platform_device by Felix Fietkau <nbd@openwrt.org>
+
+   This work is redistributed under the terms of the GNU General Public License.
+*/
+
+#ifndef __CFMIPS_ATA_H__
+#define __CFMIPS_ATA_H__
+
+#include <linux/interrupt.h>
+
+#define CFG_DC_DEV1	(void*)0xb8010010
+#define   CFG_DC_DEVBASE	0x0
+#define   CFG_DC_DEVMASK	0x4
+#define   CFG_DC_DEVC		0x8
+#define   CFG_DC_DEVTC		0xC
+
+#define CFDEV_BUF_SIZE	0x1000
+#define ATA_CIS_OFFSET	0x200
+#define ATA_REG_OFFSET	0x800
+#define ATA_DBUF_OFFSET	0xC00
+
+#define ATA_REG_FEAT	0x1
+#define ATA_REG_SC	0x2
+#define ATA_REG_SN	0x3
+#define ATA_REG_CL	0x4
+#define ATA_REG_CH	0x5
+#define ATA_REG_DH	0x6
+#define   ATA_REG_DH_BASE	0xa0
+#define   ATA_REG_DH_LBA	0x40
+#define   ATA_REG_DH_DRV	0x10
+#define ATA_REG_CMD	0x7
+#define ATA_REG_ST	0x7
+#define   ATA_REG_ST_BUSY	0x80
+#define   ATA_REG_ST_RDY	0x40
+#define   ATA_REG_ST_DWF	0x20
+#define   ATA_REG_ST_DSC	0x10
+#define   ATA_REG_ST_DRQ	0x08
+#define   ATA_REG_ST_CORR	0x04
+#define   ATA_REG_ST_ERR	0x01
+#define ATA_REG_ERR	0xd
+#define ATA_REG_DC	0xe
+#define   ATA_REG_DC_IEN	0x02
+#define   ATA_REG_DC_SRST	0x04
+
+#define ATA_CMD_READ_SECTORS	0x20
+#define ATA_CMD_WRITE_SECTORS	0x30
+#define ATA_CMD_EXEC_DRIVE_DIAG	0x90
+#define ATA_CMD_READ_MULTIPLE	0xC4
+#define ATA_CMD_WRITE_MULTIPLE	0xC5
+#define ATA_CMD_SET_MULTIPLE	0xC6
+#define ATA_CMD_IDENTIFY_DRIVE	0xEC
+#define ATA_CMD_SET_FEATURES	0xEF
+
+#define ATA_FEATURE_ENABLE_APM	0x05
+#define ATA_FEATURE_DISABLE_APM	0x85
+#define ATA_APM_DISABLED	0x00
+#define ATA_APM_MIN_POWER	0x01
+#define ATA_APM_WITH_STANDBY	0x7f
+#define ATA_APM_WITHOUT_STANDBY	0x80
+#define ATA_APM_MAX_PERFORMANCE	0xfe
+
+#define CF_SECT_SIZE	0x200
+/* That is the ratio CF_SECT_SIZE/512 (the kernel sector size) */
+#define CF_KERNEL_MUL	1
+#define ATA_MAX_SECT_PER_CMD	0x100
+
+#define CF_TRANS_FAILED		0
+#define CF_TRANS_OK		1
+#define CF_TRANS_IN_PROGRESS	2
+
+
+enum trans_state {
+	TS_IDLE = 0,
+	TS_AFTER_RESET,
+	TS_READY,
+	TS_CMD,
+	TS_TRANS
+};
+
+// 
+// #if DEBUG
+// static unsigned long busy_time;
+// #endif
+
+/** Struct to hold the cfdev
+Actually, all the data here only has one instance. However, for 
+reasons of programming conformity, it is passed around as a pointer
+*/
+struct cf_mips_dev {
+	void *base; /* base address for I/O */
+	void *baddr; /* remapped address */
+
+	int pin; /* gpio pin */
+	int irq; /* gpio irq */
+	
+	unsigned head;
+	unsigned cyl;
+	unsigned spt;
+	unsigned sectors;
+	
+	unsigned short block_size;
+	unsigned dtype ; // ATA or CF
+	struct request_queue *queue;
+	struct gendisk  *gd;
+	
+	/* Transaction state */
+	enum trans_state tstate;
+	char *tbuf;
+	unsigned long tbuf_size;
+	sector_t tsect_start;
+	unsigned tsector_count;
+	unsigned tsectors_left;
+	int tread;
+	unsigned tcmd;
+	int async_mode;
+	unsigned long irq_enable_time;
+	
+	struct request *active_req; /* A request is being carried out. Is that different from tstate? */
+	int users;
+	struct timer_list to_timer;
+	struct tasklet_struct tasklet;
+
+	/** This lock ensures that the requests to this device are all done
+	atomically. Transfers can run in parallel, requests are all queued
+	one-by-one */
+	spinlock_t lock;
+};
+
+int cf_do_transfer(struct cf_mips_dev* dev,sector_t sector, unsigned long nsect, 
+	char* buffer, int is_write);
+int cf_init(struct cf_mips_dev* dev);
+void cf_cleanup(struct cf_mips_dev* dev);
+
+void cf_async_trans_done(struct cf_mips_dev* dev, int result);
+// void *cf_get_next_buf(unsigned long *buf_size);
+
+#endif
diff --git a/target/linux/rb532/files-2.6.23/drivers/block/rb500/bdev.c b/target/linux/rb532/files-2.6.23/drivers/block/rb500/bdev.c
new file mode 100644
index 000000000..f8a9b02d7
--- /dev/null
+++ b/target/linux/rb532/files-2.6.23/drivers/block/rb500/bdev.c
@@ -0,0 +1,340 @@
+/* CF-mips driver
+   This is a block driver for the direct (mmaped) interface to the CF-slot,
+   found in Routerboard.com's RB532 board
+   See SDK provided from routerboard.com.
+   
+   Module adapted By P.Christeas <p_christeas@yahoo.com>, 2005-6.
+   Cleaned up and adapted to platform_device by Felix Fietkau <nbd@openwrt.org>
+
+   This work is redistributed under the terms of the GNU General Public License.
+*/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/time.h>
+#include <linux/wait.h>
+#include <linux/fs.h>
+#include <linux/genhd.h>
+#include <linux/blkdev.h>
+#include <linux/blkpg.h>
+#include <linux/hdreg.h>
+#include <linux/platform_device.h>
+
+#include <asm/uaccess.h>
+#include <asm/io.h>
+#include <asm/gpio.h>
+
+#include <asm/rc32434/rb.h>
+
+#ifdef DEBUG
+#define DEBUGP printk
+#define DLEVEL 1
+#else
+#define DEBUGP(format, args...)
+#define DLEVEL 0
+#endif
+
+#define CF_MIPS_MAJOR 13
+#define MAJOR_NR	CF_MIPS_MAJOR
+#define CF_MAX_PART	16		/* max 15 partitions */
+
+#include "ata.h"
+
+//extern struct block_device_operations cf_bdops;
+
+// static struct hd_struct cf_parts[CF_MAX_PART];
+// static int cf_part_sizes[CF_MAX_PART];
+// static int cf_hsect_sizes[CF_MAX_PART];
+// static int cf_max_sectors[CF_MAX_PART];
+// static int cf_blksize_sizes[CF_MAX_PART];
+
+// static spinlock_t lock = SPIN_LOCK_UNLOCKED;
+
+// volatile int cf_busy = 0;
+
+static struct request *active_req = NULL;
+
+static int cf_open (struct inode *, struct file *);
+static int cf_release (struct inode *, struct file *);
+static int cf_ioctl (struct inode *, struct file *, unsigned, unsigned long);
+
+static void cf_request(request_queue_t * q);
+static int cf_transfer(const struct request *req);
+
+/*long (*unlocked_ioctl) (struct file *, unsigned, unsigned long);
+long (*compat_ioctl) (struct file *, unsigned, unsigned long);*/
+// int (*direct_access) (struct block_device *, sector_t, unsigned long *);
+// int (*media_changed) (struct gendisk *);
+// int (*revalidate_disk) (struct gendisk *);
+
+static struct block_device_operations cf_bdops = {
+      .owner = THIS_MODULE,
+      .open = cf_open,
+      .release = cf_release,
+      .ioctl = cf_ioctl,
+      .media_changed = NULL,
+      .unlocked_ioctl = NULL,
+      .revalidate_disk = NULL,
+      .compat_ioctl = NULL,
+      .direct_access = NULL
+};
+
+
+int cf_mips_probe(struct platform_device *pdev)
+{
+	struct gendisk* cf_gendisk=NULL;
+	struct cf_device *cdev = (struct cf_device *) pdev->dev.platform_data;
+	struct cf_mips_dev *dev;
+	struct resource *r;
+	int reg_result;
+
+	reg_result = register_blkdev(MAJOR_NR, "cf-mips");
+	if (reg_result < 0) {
+		printk(KERN_WARNING "cf-mips: can't get major %d\n", MAJOR_NR);
+		return reg_result;
+	}
+
+	dev = (struct cf_mips_dev *)kmalloc(sizeof(struct cf_mips_dev),GFP_KERNEL);
+	if (!dev)
+		goto out_err;
+	memset(dev, 0, sizeof(struct cf_mips_dev));
+	cdev->dev = dev;
+	
+	dev->pin = cdev->gpio_pin;
+	dev->irq = platform_get_irq_byname(pdev, "cf_irq");
+	r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cf_membase");
+	dev->base = (void *) r->start;
+	
+	if (cf_init(dev)) goto out_err;
+	printk("init done");
+	
+	spin_lock_init(&dev->lock);
+	dev->queue = blk_init_queue(cf_request,&dev->lock);
+	if (!dev->queue){
+		printk(KERN_ERR "cf-mips: no mem for queue\n");
+		goto out_err;
+	}
+	blk_queue_max_sectors(dev->queue,ATA_MAX_SECT_PER_CMD);
+
+	/* For memory devices, it is always better to avoid crossing segments
+	inside the same request. */
+/*	if (dev->dtype==0x848A){
+		printk(KERN_INFO "Setting boundary for cf to 0x%x",(dev->block_size*512)-1);
+		blk_queue_segment_boundary(dev->queue, (dev->block_size*512)-1);
+	}*/
+
+	dev->gd = alloc_disk(CF_MAX_PART);
+	cf_gendisk = dev->gd;
+	cdev->gd = dev->gd;
+	if (!cf_gendisk) goto out_err; /* Last of these goto's */
+	
+	cf_gendisk->major = MAJOR_NR;
+	cf_gendisk->first_minor = 0;
+	cf_gendisk->queue=dev->queue;
+	BUG_ON(cf_gendisk->minors != CF_MAX_PART);
+	strcpy(cf_gendisk->disk_name,"cfa");
+	cf_gendisk->fops = &cf_bdops;
+	cf_gendisk->flags = 0 ; /* is not yet GENHD_FL_REMOVABLE */
+	cf_gendisk->private_data=dev;
+	
+	set_capacity(cf_gendisk,dev->sectors * CF_KERNEL_MUL);
+	
+	/* Let the disk go live */
+	add_disk(cf_gendisk);
+#if 0
+	result = cf_init();
+	
+	/* default cfg for all partitions */
+	memset(cf_parts, 0, sizeof (cf_parts[0]) * CF_MAX_PART);
+	memset(cf_part_sizes, 0, sizeof (cf_part_sizes[0]) * CF_MAX_PART);
+	for (i = 0; i < CF_MAX_PART; ++i) {
+		cf_hsect_sizes[i] = CF_SECT_SIZE;
+		cf_max_sectors[i] = ATA_MAX_SECT_PER_CMD;
+		cf_blksize_sizes[i] = BLOCK_SIZE;
+	}
+
+	/* setup info for whole disk (partition 0) */
+	cf_part_sizes[0] = cf_sectors / 2;
+	cf_parts[0].nr_sects = cf_sectors;
+
+	blk_size[MAJOR_NR] = cf_part_sizes;
+	blksize_size[MAJOR_NR] = cf_blksize_sizes;
+	max_sectors[MAJOR_NR] = cf_max_sectors;
+	hardsect_size[MAJOR_NR] = cf_hsect_sizes;
+	read_ahead[MAJOR_NR] = 8;	/* (4kB) */
+
+	blk_init_queue(BLK_DEFAULT_QUEUE(MAJOR_NR), DEVICE_REQUEST);
+
+	add_gendisk(&cf_gendisk);
+#endif
+// 	printk(KERN_INFO "cf-mips partition check: \n");
+// 	register_disk(cf_gendisk, MKDEV(MAJOR_NR, 0), CF_MAX_PART,
+// 		      &cf_bdops, dev->sectors);
+	return 0;
+
+out_err:
+	if (dev->queue){
+		blk_cleanup_queue(dev->queue);
+	}
+	if (reg_result) {
+		unregister_blkdev(MAJOR_NR, "cf-mips");
+		return reg_result;
+	}
+	if (dev){
+		cf_cleanup(dev);
+		kfree(dev);
+	}
+	return 1;
+}
+
+static int
+cf_mips_remove(struct platform_device *pdev)
+{
+	struct cf_device *cdev = (struct cf_device *) pdev->dev.platform_data;
+	struct cf_mips_dev *dev = (struct cf_mips_dev *) cdev->dev;
+	
+	unregister_blkdev(MAJOR_NR, "cf-mips");
+	blk_cleanup_queue(dev->queue);
+
+	del_gendisk(dev->gd);
+	cf_cleanup(dev);
+	return 0;
+}
+
+
+static struct platform_driver cf_driver = {
+	.driver.name = "rb500-cf",
+	.probe = cf_mips_probe,
+	.remove = cf_mips_remove,
+};
+
+static int __init cf_mips_init(void)
+{
+	printk(KERN_INFO "cf-mips module loaded\n");
+	return platform_driver_register(&cf_driver);
+}
+
+static void cf_mips_cleanup(void)
+{
+	platform_driver_unregister(&cf_driver);
+	printk(KERN_INFO "cf-mips module removed\n");
+}
+
+module_init(cf_mips_init);
+module_exit(cf_mips_cleanup);
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_BLOCKDEV_MAJOR(CF_MIPS_MAJOR);
+
+
+static int cf_open(struct inode *inode, struct file *filp)
+{
+	struct cf_mips_dev  *dev=inode->i_bdev->bd_disk->private_data;
+	int minor = MINOR(inode->i_rdev);
+	
+	if (minor >= CF_MAX_PART)
+		return -ENODEV;
+	//DEBUGP(KERN_INFO "cf-mips module opened, minor %d\n", minor);
+	spin_lock(&dev->lock);
+	dev->users++;
+	spin_unlock(&dev->lock);
+	filp->private_data=dev;
+	
+	/* dirty workaround to set CFRDY GPIO as an input when some other
+	   program sets it as an output */
+	gpio_set_value(dev->pin, 0);
+	return 0;		/* success */
+}
+
+static int cf_release(struct inode *inode, struct file *filp)
+{
+	int minor = MINOR(inode->i_rdev);
+	struct cf_mips_dev  *dev=inode->i_bdev->bd_disk->private_data;
+	spin_lock(&dev->lock);
+	dev->users--;
+	spin_unlock(&dev->lock);
+	return 0;
+}
+
+static int cf_ioctl(struct inode *inode, struct file *filp,
+	 unsigned int cmd, unsigned long arg)
+{
+	unsigned minor = MINOR(inode->i_rdev);
+	struct cf_mips_dev  *dev=inode->i_bdev->bd_disk->private_data;
+
+	DEBUGP(KERN_INFO "cf_ioctl cmd %u\n", cmd);
+	switch (cmd) {
+	case BLKRRPART:	/* re-read partition table */
+		if (!capable(CAP_SYS_ADMIN))
+			return -EACCES;
+		printk(KERN_INFO "cf-mips partition check: \n");
+		register_disk(dev->gd);
+		return 0;
+
+	case HDIO_GETGEO:
+		{
+			struct hd_geometry geo;
+			geo.cylinders = dev->cyl;
+			geo.heads = dev->head;
+			geo.sectors = dev->spt;
+			geo.start = (*dev->gd->part)[minor].start_sect;
+			if (copy_to_user((void *) arg, &geo, sizeof (geo)))
+				return -EFAULT;
+		}
+		return 0;
+	}
+
+	return -EINVAL;		/* unknown command */
+}
+
+static void cf_request(request_queue_t * q)
+{
+	struct cf_mips_dev* dev;
+	
+	struct request * req;
+	int status;
+
+	/* We could have q->queuedata = dev , but haven't yet. */
+	if (active_req)
+		return;
+
+	while ((req=elv_next_request(q))!=NULL){
+		dev=req->rq_disk->private_data;
+		status=cf_transfer(req);
+		if (status==CF_TRANS_IN_PROGRESS){
+			active_req=req;
+			return;
+		}
+		end_request(req,status);
+	}
+}
+
+static int cf_transfer(const struct request *req)
+{
+	struct cf_mips_dev* dev=req->rq_disk->private_data;
+
+	if (!blk_fs_request(req)){	
+		if (printk_ratelimit())
+			printk(KERN_WARNING "cf-mips: skipping non-fs request 0x%x\n",req->cmd[0]);
+		return CF_TRANS_FAILED;
+	}
+	
+	return cf_do_transfer(dev,req->sector,req->current_nr_sectors,req->buffer,rq_data_dir(req));
+}
+
+void cf_async_trans_done(struct cf_mips_dev * dev,int result)
+{
+	struct request *req;
+	
+	spin_lock(&dev->lock);
+	req=active_req;
+	active_req=NULL;
+	end_request(req,result);
+	spin_unlock(&dev->lock);
+
+	spin_lock(&dev->lock);
+	cf_request(dev->queue);
+	spin_unlock(&dev->lock);
+}
+
diff --git a/target/linux/rb532/files-2.6.23/drivers/char/watchdog/rc32434_wdt.c b/target/linux/rb532/files-2.6.23/drivers/char/watchdog/rc32434_wdt.c
new file mode 100644
index 000000000..2266329de
--- /dev/null
+++ b/target/linux/rb532/files-2.6.23/drivers/char/watchdog/rc32434_wdt.c
@@ -0,0 +1,240 @@
+/*
+ *	RC32434_WDT 0.01: IDT Interprise 79RC32434 watchdog driver 
+ *	Copyright (c) Ondrej Zajicek <santiago@crfreenet.org>, 2006
+ *
+ *	based on
+ *
+ *	SoftDog	0.05:	A Software Watchdog Device
+ *
+ *	(c) Copyright 1996 Alan Cox <alan@redhat.com>, All Rights Reserved.
+ *
+ *	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.
+ *	
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/mm.h>
+#include <linux/miscdevice.h>
+#include <linux/watchdog.h>
+#include <linux/reboot.h>
+#include <linux/smp_lock.h>
+#include <linux/init.h>
+#include <asm/bootinfo.h>
+#include <asm/time.h>
+#include <asm/uaccess.h>
+#include <asm/rc32434/integ.h>
+
+#define DEFAULT_TIMEOUT	15		/* (secs) Default is 15 seconds */
+#define MAX_TIMEOUT	20		
+/*
+ * (secs) Max is 20 seconds 
+ * (max frequency of counter is ~200 MHz, counter is 32-bit unsigned int) 
+ */
+
+#define NAME "rc32434_wdt"
+#define VERSION "0.1"
+
+static INTEG_t rc_wdt = (INTEG_t) INTEG_VirtualAddress;                                                                     
+
+static int expect_close = 0;
+static int access = 0;
+static int timeout = 0;
+
+static int nowayout = WATCHDOG_NOWAYOUT;
+module_param(nowayout, int, 0);
+MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+MODULE_LICENSE("GPL");
+
+
+static inline void start_wdt(void)
+{
+	rc_wdt -> wtcount = 0;
+	rc_wdt -> errcs |= ERRCS_wre_m;
+	rc_wdt -> wtc   |= WTC_en_m;
+}
+
+static inline void stop_wdt(void)
+{
+	rc_wdt -> wtc   &= ~WTC_en_m;
+	rc_wdt -> errcs &= ~ERRCS_wre_m;
+}
+
+static inline void set_wdt(int new_timeout)
+{
+	u32 cmp = new_timeout * mips_hpt_frequency;
+	u32 state;
+	
+	timeout = new_timeout;
+	/*
+	 * store and disable WTC
+	 */
+	state = rc_wdt -> wtc & WTC_en_m;
+	rc_wdt -> wtc   &= ~WTC_en_m;
+
+	rc_wdt -> wtcount = 0;
+	rc_wdt -> wtcompare = cmp;
+
+	/*
+	 * restore WTC
+	 */	
+	rc_wdt -> wtc |= state;
+}
+
+static inline void update_wdt(void)
+{
+	rc_wdt -> wtcount = 0;
+}
+
+/*
+ *	Allow only one person to hold it open
+ */
+ 
+static int wdt_open(struct inode *inode, struct file *file)
+{
+	if (access)
+		return -EBUSY;
+	if (nowayout) {
+		__module_get(THIS_MODULE);
+	}
+	/*
+	 *	Activate timer
+	 */
+	start_wdt();
+	printk(KERN_INFO NAME ": enabling watchdog timer\n");
+	access = 1;
+	return 0;
+}
+
+static int wdt_release(struct inode *inode, struct file *file)
+{
+	/*
+	 *	Shut off the timer.
+	 * 	Lock it in if it's a module and we set nowayout
+	 */
+	if (expect_close && nowayout == 0) {
+		stop_wdt ();
+		printk(KERN_INFO NAME ": disabling watchdog timer\n");
+		module_put(THIS_MODULE);
+	} else {
+		printk (KERN_CRIT NAME ": device closed unexpectedly.  WDT will not stop!\n");
+	}
+	access = 0;
+	return 0;
+}
+
+static ssize_t wdt_write(struct file *file, const char *data, size_t len, loff_t *ppos)
+{
+	/*
+	 *	Refresh the timer.
+	 */
+	if (len) {
+		if (!nowayout) {
+			size_t i;
+
+			/* In case it was set long ago */
+			expect_close = 0;
+
+			for (i = 0; i != len; i++) {
+				char c;
+				if (get_user(c, data + i))
+					return -EFAULT;
+				if (c == 'V')
+					expect_close = 1;
+			}
+		}
+		update_wdt ();
+		return len;
+	}
+	return 0;
+}
+
+static int wdt_ioctl(struct inode *inode, struct file *file,
+	unsigned int cmd, unsigned long arg)
+{
+	int new_timeout;
+	static struct watchdog_info ident = {
+		.options =		WDIOF_SETTIMEOUT |
+					WDIOF_KEEPALIVEPING |
+					WDIOF_MAGICCLOSE,
+		.firmware_version =	0,
+		.identity =		"RC32434_WDT Watchdog",
+	};
+	switch (cmd) {
+		default:
+			return -ENOTTY;
+		case WDIOC_GETSUPPORT:
+			if(copy_to_user((struct watchdog_info *)arg, &ident, sizeof(ident)))
+				return -EFAULT;
+			return 0;
+		case WDIOC_GETSTATUS:
+		case WDIOC_GETBOOTSTATUS:
+			return put_user(0,(int *)arg);
+		case WDIOC_KEEPALIVE:
+			update_wdt();
+			return 0;
+		case WDIOC_SETTIMEOUT:
+			if (get_user(new_timeout, (int *)arg))
+				return -EFAULT;
+			if (new_timeout < 1)
+				return -EINVAL;
+			if (new_timeout > MAX_TIMEOUT)
+				return -EINVAL;
+			set_wdt(new_timeout);
+			/* Fall */
+		case WDIOC_GETTIMEOUT:
+			return put_user(timeout, (int *)arg);
+	}
+}
+
+static struct file_operations wdt_fops = {
+	owner:		THIS_MODULE,
+	llseek:		no_llseek,
+	write:		wdt_write,
+	ioctl:		wdt_ioctl,
+	open:		wdt_open,
+	release:	wdt_release,
+};
+
+static struct miscdevice wdt_miscdev = {
+	minor:		WATCHDOG_MINOR,
+	name:		"watchdog",
+	fops:		&wdt_fops,
+};
+
+static char banner[] __initdata = KERN_INFO NAME ": Watchdog Timer version " VERSION ", timer margin: %d sec\n";
+
+static int __init watchdog_init(void)
+{
+	int ret;
+
+	/*
+  	 * There should be check for RC32434 SoC
+	 */
+	if (mips_machgroup != MACH_GROUP_MIKROTIK) return -1;
+
+	ret = misc_register(&wdt_miscdev);
+
+	if (ret)
+		return ret;
+
+	stop_wdt();
+	set_wdt(DEFAULT_TIMEOUT);
+
+	printk(banner, timeout);
+
+	return 0;
+}
+
+static void __exit watchdog_exit(void)
+{
+	misc_deregister(&wdt_miscdev);
+}
+
+module_init(watchdog_init);
+module_exit(watchdog_exit);
diff --git a/target/linux/rb532/files-2.6.23/drivers/leds/leds-rb500.c b/target/linux/rb532/files-2.6.23/drivers/leds/leds-rb500.c
new file mode 100644
index 000000000..3ab530a75
--- /dev/null
+++ b/target/linux/rb532/files-2.6.23/drivers/leds/leds-rb500.c
@@ -0,0 +1,81 @@
+/*
+ * linux/drivers/leds/leds-rb500.c
+ *
+ * Copyright (C) 2006
+ *     Twente Institute for Wireless and Mobile Communications BV
+ *
+ * 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 (see file GPLv2).
+ *
+ * Author: Tjalling Hattink <tjalling.hattink@ti-wmc.nl>
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+#include <asm/rc32434/rb.h>
+
+static void rb500led_amber_set(struct led_classdev *led_cdev, enum led_brightness value)
+{
+	if (value)
+		changeLatchU5(LO_ULED, 0);
+	else
+		changeLatchU5(0, LO_ULED);
+}
+
+static struct led_classdev rb500_amber_led = {
+	.name			= "rb500led:amber",
+	.default_trigger	= "ide-disk",
+	.brightness_set		= rb500led_amber_set,
+};
+
+static int rb500led_probe(struct platform_device *pdev)
+{
+	int ret;
+
+	changeLatchU5(0, LO_ULED);
+
+	ret = led_classdev_register(&pdev->dev, &rb500_amber_led);
+
+	return ret;
+}
+
+static int rb500led_remove(struct platform_device *pdev)
+{
+	led_classdev_unregister(&rb500_amber_led);
+
+	return 0;
+}
+
+static struct platform_driver rb500led_driver = {
+	.probe		= rb500led_probe,
+	.remove		= rb500led_remove,
+	.driver		= {
+		.name		= "rb500-led",
+	},
+};
+
+static int __init rb500led_init(void)
+{
+	return platform_driver_register(&rb500led_driver);
+}
+
+static void __exit rb500led_exit(void)
+{
+ 	platform_driver_unregister(&rb500led_driver);
+}
+
+module_init(rb500led_init);
+module_exit(rb500led_exit);
+
+MODULE_AUTHOR("tjalling.hattink@ti-wmc.nl");
+MODULE_DESCRIPTION("Mikrotik RB500 LED driver");
+MODULE_LICENSE("GPL");
diff --git a/target/linux/rb532/files-2.6.23/drivers/net/korina.c b/target/linux/rb532/files-2.6.23/drivers/net/korina.c
new file mode 100644
index 000000000..e89f334cf
--- /dev/null
+++ b/target/linux/rb532/files-2.6.23/drivers/net/korina.c
@@ -0,0 +1,1167 @@
+/**************************************************************************
+ *
+ *  BRIEF MODULE DESCRIPTION
+ *     Driver for the IDT RC32434 on-chip ethernet controller.
+ *
+ *  Copyright 2004 IDT Inc. (rischelp@idt.com)
+ *  Copyright 2006 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 as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ **************************************************************************
+ * May 2004 rkt, neb
+ *
+ * Based on the driver developed by B. Maruthanayakam, H. Kou and others.
+ *
+ * Aug 2004 Sadik
+ *
+ * Added NAPI
+ *
+ **************************************************************************
+ */
+
+#include <linux/autoconf.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/moduleparam.h>
+#include <linux/sched.h>
+#include <linux/ctype.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ptrace.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/proc_fs.h>
+#include <linux/in.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/errno.h>
+#include <linux/platform_device.h>
+#include <asm/bootinfo.h>
+#include <asm/system.h>
+#include <asm/bitops.h>
+#include <asm/pgtable.h>
+#include <asm/segment.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+
+#include <asm/rc32434/rb.h>
+#include "rc32434_eth.h"
+
+#define DRIVER_VERSION "(mar2904)"
+
+#define DRIVER_NAME "rc32434 Ethernet driver. " DRIVER_VERSION
+
+#define STATION_ADDRESS_HIGH(dev) (((dev)->dev_addr[0] << 8) | \
+			           ((dev)->dev_addr[1]))
+#define STATION_ADDRESS_LOW(dev)  (((dev)->dev_addr[2] << 24) | \
+				   ((dev)->dev_addr[3] << 16) | \
+				   ((dev)->dev_addr[4] << 8)  | \
+				   ((dev)->dev_addr[5]))
+
+#define MII_CLOCK 1250000 				/* no more than 2.5MHz */
+#define CONFIG_IDT_USE_NAPI 1
+
+
+static inline void rc32434_abort_tx(struct net_device *dev)
+{
+	struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
+	rc32434_abort_dma(dev, lp->tx_dma_regs);
+	
+}
+
+static inline void rc32434_abort_rx(struct net_device *dev)
+{
+	struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
+	rc32434_abort_dma(dev, lp->rx_dma_regs);
+	
+}
+
+static inline void rc32434_start_tx(struct rc32434_local *lp,  volatile DMAD_t td)
+{
+	rc32434_start_dma(lp->tx_dma_regs, CPHYSADDR(td));
+}
+
+static inline void rc32434_start_rx(struct rc32434_local *lp, volatile DMAD_t rd)
+{
+	rc32434_start_dma(lp->rx_dma_regs, CPHYSADDR(rd));
+}
+
+static inline void rc32434_chain_tx(struct rc32434_local *lp, volatile DMAD_t td)
+{
+	rc32434_chain_dma(lp->tx_dma_regs, CPHYSADDR(td));
+}
+
+static inline void rc32434_chain_rx(struct rc32434_local *lp, volatile DMAD_t rd)
+{
+	rc32434_chain_dma(lp->rx_dma_regs, CPHYSADDR(rd));
+}
+
+#ifdef RC32434_PROC_DEBUG
+static int rc32434_read_proc(char *buf, char **start, off_t fpos,
+			     int length, int *eof, void *data)
+{
+	struct net_device *dev = (struct net_device *)data;
+	struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
+	int len = 0;
+	
+	/* print out header */
+	len += sprintf(buf + len, "\n\tKorina Ethernet Debug\n\n");
+	len += sprintf (buf + len,
+			"DMA halt count      = %10d, DMA run count = %10d\n",
+			lp->dma_halt_cnt, lp->dma_run_cnt);
+	
+	if (fpos >= len) {
+		*start = buf;
+		*eof = 1;
+		return 0;
+	}
+	*start = buf + fpos;
+	
+	if ((len -= fpos) > length) 
+		return length;	
+	*eof = 1;
+	
+	return len;
+	
+}
+#endif
+
+
+/*
+ * Restart the RC32434 ethernet controller. 
+ */
+static int rc32434_restart(struct net_device *dev)
+{
+	struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
+	
+	/*
+	 * Disable interrupts
+	 */
+	disable_irq(lp->rx_irq);
+	disable_irq(lp->tx_irq);
+#ifdef	RC32434_REVISION
+	disable_irq(lp->ovr_irq);
+#endif	
+	disable_irq(lp->und_irq);
+	
+	/* Mask F E bit in Tx DMA */
+	__raw_writel(__raw_readl(&lp->tx_dma_regs->dmasm) | DMASM_f_m | DMASM_e_m, &lp->tx_dma_regs->dmasm);
+	/* Mask D H E bit in Rx DMA */
+	__raw_writel(__raw_readl(&lp->rx_dma_regs->dmasm) | DMASM_d_m | DMASM_h_m | DMASM_e_m, &lp->rx_dma_regs->dmasm);
+	
+	rc32434_init(dev);
+	rc32434_multicast_list(dev);
+	
+	enable_irq(lp->und_irq);
+#ifdef	RC32434_REVISION
+	enable_irq(lp->ovr_irq);
+#endif
+	enable_irq(lp->tx_irq);
+	enable_irq(lp->rx_irq);
+	
+	return 0;
+}
+
+static int rc32434_probe(struct platform_device *pdev)
+{
+	struct korina_device *bif = (struct korina_device *) pdev->dev.platform_data;
+	struct rc32434_local *lp = NULL;
+	struct net_device *dev = NULL;
+	struct resource *r;
+	int i, retval,err;
+	
+	dev = alloc_etherdev(sizeof(struct rc32434_local));
+	if(!dev) {
+		ERR("Korina_eth: alloc_etherdev failed\n");
+		return -1;
+	}
+
+	platform_set_drvdata(pdev, dev);
+	SET_MODULE_OWNER(dev);
+	bif->dev = dev;
+	
+	memcpy(dev->dev_addr, bif->mac, 6);
+
+	/* Initialize the device structure. */
+	if (dev->priv == NULL) {
+		lp = (struct rc32434_local *)kmalloc(sizeof(*lp), GFP_KERNEL);
+		memset(lp, 0, sizeof(struct rc32434_local));
+	} 
+	else {
+		lp = (struct rc32434_local *)dev->priv;
+	}
+	
+	lp->rx_irq = platform_get_irq_byname(pdev, "korina_rx");
+	lp->tx_irq = platform_get_irq_byname(pdev, "korina_tx");
+	lp->ovr_irq = platform_get_irq_byname(pdev, "korina_ovr");
+	lp->und_irq = platform_get_irq_byname(pdev, "korina_und");
+
+	r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "korina_regs");
+	dev->base_addr = r->start;
+	lp->eth_regs = ioremap_nocache(r->start, r->end - r->start);
+	if (!lp->eth_regs) {
+		ERR("Can't remap eth registers\n");
+		retval = -ENXIO;
+		goto probe_err_out;
+	}
+
+	r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "korina_dma_rx");
+	lp->rx_dma_regs = ioremap_nocache(r->start, r->end - r->start);
+	if (!lp->rx_dma_regs) {
+		ERR("Can't remap Rx DMA registers\n");
+		retval = -ENXIO;
+		goto probe_err_out;
+	}
+
+	r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "korina_dma_tx");
+	lp->tx_dma_regs = ioremap_nocache(r->start, r->end - r->start);
+	if (!lp->tx_dma_regs) {
+		ERR("Can't remap Tx DMA registers\n");
+		retval = -ENXIO;
+		goto probe_err_out;
+	}
+	
+#ifdef RC32434_PROC_DEBUG
+	lp->ps = create_proc_read_entry (bif->name, 0, proc_net,
+					 rc32434_read_proc, dev);
+#endif
+	
+	lp->td_ring =	(DMAD_t)kmalloc(TD_RING_SIZE + RD_RING_SIZE, GFP_KERNEL);
+	if (!lp->td_ring) {
+		ERR("Can't allocate descriptors\n");
+		retval = -ENOMEM;
+		goto probe_err_out;
+	}
+	
+	dma_cache_inv((unsigned long)(lp->td_ring), TD_RING_SIZE + RD_RING_SIZE);
+	
+	/* now convert TD_RING pointer to KSEG1 */
+	lp->td_ring = (DMAD_t )KSEG1ADDR(lp->td_ring);
+	lp->rd_ring = &lp->td_ring[RC32434_NUM_TDS];
+	
+	
+	spin_lock_init(&lp->lock);
+	
+	/* just use the rx dma irq */
+	dev->irq = lp->rx_irq;
+	
+	dev->priv = lp;
+	
+	dev->open = rc32434_open;
+	dev->stop = rc32434_close;
+	dev->hard_start_xmit = rc32434_send_packet;
+	dev->get_stats	= rc32434_get_stats;
+	dev->set_multicast_list = &rc32434_multicast_list;
+	dev->tx_timeout = rc32434_tx_timeout;
+	dev->watchdog_timeo = RC32434_TX_TIMEOUT;
+
+#ifdef CONFIG_IDT_USE_NAPI
+	dev->poll = rc32434_poll;
+	dev->weight = 64;
+	printk("Using NAPI with weight %d\n",dev->weight);
+#else
+	lp->rx_tasklet = kmalloc(sizeof(struct tasklet_struct), GFP_KERNEL);
+	tasklet_init(lp->rx_tasklet, rc32434_rx_tasklet, (unsigned long)dev);
+#endif
+	lp->tx_tasklet = kmalloc(sizeof(struct tasklet_struct), GFP_KERNEL);
+	tasklet_init(lp->tx_tasklet, rc32434_tx_tasklet, (unsigned long)dev);
+	
+	if ((err = register_netdev(dev))) {
+		printk(KERN_ERR "rc32434 ethernet. Cannot register net device %d\n", err);
+		free_netdev(dev);
+		retval = -EINVAL;
+		goto probe_err_out;
+	}
+	
+	INFO("Rx IRQ %d, Tx IRQ %d, ", lp->rx_irq, lp->tx_irq);
+	for (i = 0; i < 6; i++) {
+		printk("%2.2x", dev->dev_addr[i]);
+		if (i<5)
+			printk(":");
+	}
+	printk("\n");
+	
+	return 0;
+	
+ probe_err_out:
+	rc32434_cleanup_module();
+	ERR(" failed.  Returns %d\n", retval);
+	return retval;
+	
+}
+
+static int rc32434_remove(struct platform_device *pdev)
+{
+	struct korina_device *bif = (struct korina_device *) pdev->dev.platform_data;
+	
+	if (bif->dev != NULL) {
+		struct rc32434_local *lp = (struct rc32434_local *)bif->dev->priv;
+		if (lp != NULL) {
+			if (lp->eth_regs)
+				iounmap((void*)lp->eth_regs);
+			if (lp->rx_dma_regs)
+				iounmap((void*)lp->rx_dma_regs);
+			if (lp->tx_dma_regs)
+				iounmap((void*)lp->tx_dma_regs);
+			if (lp->td_ring)
+				kfree((void*)KSEG0ADDR(lp->td_ring));
+			
+#ifdef RC32434_PROC_DEBUG
+			if (lp->ps) {
+				remove_proc_entry(bif->name, proc_net);
+			}
+#endif
+			kfree(lp);
+		}
+		
+		platform_set_drvdata(pdev, NULL);
+		unregister_netdev(bif->dev);
+		free_netdev(bif->dev);
+		kfree(bif->dev);
+	}
+	return 0;
+}
+
+
+static int rc32434_open(struct net_device *dev)
+{
+	struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
+	
+	/* Initialize */
+	if (rc32434_init(dev)) {
+		ERR("Error: cannot open the Ethernet device\n");
+		return -EAGAIN;
+	}
+	
+	/* Install the interrupt handler that handles the Done Finished Ovr and Und Events */	
+	if (request_irq(lp->rx_irq, &rc32434_rx_dma_interrupt,
+		  SA_SHIRQ | SA_INTERRUPT,
+			"Korina ethernet Rx", dev)) {
+		ERR(": unable to get Rx DMA IRQ %d\n",
+		    lp->rx_irq);
+		return -EAGAIN;
+	}
+	if (request_irq(lp->tx_irq, &rc32434_tx_dma_interrupt,
+		  SA_SHIRQ | SA_INTERRUPT,
+			"Korina ethernet Tx", dev)) {
+		ERR(": unable to get Tx DMA IRQ %d\n",
+		    lp->tx_irq);
+		free_irq(lp->rx_irq, dev);
+		return -EAGAIN;
+	}
+	
+#ifdef	RC32434_REVISION
+	/* Install handler for overrun error. */
+	if (request_irq(lp->ovr_irq, &rc32434_ovr_interrupt,
+			SA_SHIRQ | SA_INTERRUPT,
+			"Ethernet Overflow", dev)) {
+		ERR(": unable to get OVR IRQ %d\n",
+		    lp->ovr_irq);
+		free_irq(lp->rx_irq, dev);
+		free_irq(lp->tx_irq, dev);
+		return -EAGAIN;
+	}
+#endif
+	
+	/* Install handler for underflow error. */
+	if (request_irq(lp->und_irq, &rc32434_und_interrupt,
+			SA_SHIRQ | SA_INTERRUPT,
+			"Ethernet Underflow", dev)) {
+		ERR(": unable to get UND IRQ %d\n",
+		    lp->und_irq);
+		free_irq(lp->rx_irq, dev);
+		free_irq(lp->tx_irq, dev);
+#ifdef	RC32434_REVISION		
+		free_irq(lp->ovr_irq, dev);		
+#endif
+		return -EAGAIN;
+	}
+	
+	
+	return 0;
+}
+
+
+
+
+static int rc32434_close(struct net_device *dev)
+{
+	struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
+	u32 tmp;
+	
+	/* Disable interrupts */
+	disable_irq(lp->rx_irq);
+	disable_irq(lp->tx_irq);
+#ifdef	RC32434_REVISION
+	disable_irq(lp->ovr_irq);
+#endif
+	disable_irq(lp->und_irq);
+	
+	tmp = __raw_readl(&lp->tx_dma_regs->dmasm);
+	tmp = tmp | DMASM_f_m | DMASM_e_m;
+	__raw_writel(tmp, &lp->tx_dma_regs->dmasm);
+	
+	tmp = __raw_readl(&lp->rx_dma_regs->dmasm);
+	tmp = tmp | DMASM_d_m | DMASM_h_m | DMASM_e_m;
+	__raw_writel(tmp, &lp->rx_dma_regs->dmasm);
+	
+	free_irq(lp->rx_irq, dev);
+	free_irq(lp->tx_irq, dev);
+#ifdef	RC32434_REVISION	
+	free_irq(lp->ovr_irq, dev);
+#endif
+	free_irq(lp->und_irq, dev);
+	return 0;
+}
+
+
+/* transmit packet */
+static int rc32434_send_packet(struct sk_buff *skb, struct net_device *dev)
+{
+	struct rc32434_local		*lp = (struct rc32434_local *)dev->priv;
+	unsigned long 			flags;
+	u32					length;
+	DMAD_t				td;
+	
+	
+	spin_lock_irqsave(&lp->lock, flags);
+	
+	td = &lp->td_ring[lp->tx_chain_tail];
+	
+	/* stop queue when full, drop pkts if queue already full */
+	if(lp->tx_count >= (RC32434_NUM_TDS - 2)) {
+		lp->tx_full = 1;
+		
+		if(lp->tx_count == (RC32434_NUM_TDS - 2)) {
+			netif_stop_queue(dev);
+		}
+		else {
+			lp->stats.tx_dropped++;
+			dev_kfree_skb_any(skb);
+			spin_unlock_irqrestore(&lp->lock, flags);
+			return 1;
+		}	   
+	}	 
+	
+	lp->tx_count ++;
+	
+	lp->tx_skb[lp->tx_chain_tail] = skb;
+	
+	length = skb->len;
+	dma_cache_wback((u32)skb->data, skb->len);
+	
+	/* Setup the transmit descriptor. */
+	dma_cache_inv((u32) td, sizeof(*td));
+	td->ca = CPHYSADDR(skb->data);
+	
+	if(__raw_readl(&(lp->tx_dma_regs->dmandptr)) == 0) {
+		if( lp->tx_chain_status == empty ) {
+			td->control = DMA_COUNT(length) |DMAD_cof_m |DMAD_iof_m;                                /*  Update tail      */
+			lp->tx_chain_tail = (lp->tx_chain_tail + 1) & RC32434_TDS_MASK;                          /*   Move tail       */
+			__raw_writel(CPHYSADDR(&lp->td_ring[lp->tx_chain_head]), &(lp->tx_dma_regs->dmandptr)); /* Write to NDPTR    */
+			lp->tx_chain_head = lp->tx_chain_tail;                                                  /* Move head to tail */
+		}
+		else {
+			td->control = DMA_COUNT(length) |DMAD_cof_m|DMAD_iof_m;                                 /* Update tail */
+			lp->td_ring[(lp->tx_chain_tail-1)& RC32434_TDS_MASK].control &=  ~(DMAD_cof_m);          /* Link to prev */
+			lp->td_ring[(lp->tx_chain_tail-1)& RC32434_TDS_MASK].link =  CPHYSADDR(td);              /* Link to prev */
+			lp->tx_chain_tail = (lp->tx_chain_tail + 1) & RC32434_TDS_MASK;                          /* Move tail */
+			__raw_writel(CPHYSADDR(&lp->td_ring[lp->tx_chain_head]), &(lp->tx_dma_regs->dmandptr)); /* Write to NDPTR */
+			lp->tx_chain_head = lp->tx_chain_tail;                                                  /* Move head to tail */
+			lp->tx_chain_status = empty;
+		}
+	}
+	else {
+		if( lp->tx_chain_status == empty ) {
+			td->control = DMA_COUNT(length) |DMAD_cof_m |DMAD_iof_m;                                /* Update tail */
+			lp->tx_chain_tail = (lp->tx_chain_tail + 1) & RC32434_TDS_MASK;                          /* Move tail */
+			lp->tx_chain_status = filled;
+		}
+		else {
+			td->control = DMA_COUNT(length) |DMAD_cof_m |DMAD_iof_m;                                /* Update tail */
+			lp->td_ring[(lp->tx_chain_tail-1)& RC32434_TDS_MASK].control &=  ~(DMAD_cof_m);          /* Link to prev */
+			lp->td_ring[(lp->tx_chain_tail-1)& RC32434_TDS_MASK].link =  CPHYSADDR(td);              /* Link to prev */
+			lp->tx_chain_tail = (lp->tx_chain_tail + 1) & RC32434_TDS_MASK;                          /* Move tail */
+		}
+	}
+	dma_cache_wback((u32) td, sizeof(*td));
+	
+	dev->trans_start = jiffies;				
+	
+	spin_unlock_irqrestore(&lp->lock, flags);
+	
+	return 0;
+}
+
+
+/* Ethernet MII-PHY Handler */
+static void rc32434_mii_handler(unsigned long data)
+{
+	struct net_device *dev = (struct net_device *)data;		
+	struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
+	unsigned long 	flags;
+	unsigned long duplex_status;
+	int port_addr = (lp->rx_irq == 0x2c? 1:0) << 8;
+	
+	spin_lock_irqsave(&lp->lock, flags);
+	
+	/* Two ports are using the same MII, the difference is the PHY address */
+	__raw_writel(0, &rc32434_eth0_regs->miimcfg);  
+	__raw_writel(0, &rc32434_eth0_regs->miimcmd);  
+	__raw_writel(port_addr |0x05, &rc32434_eth0_regs->miimaddr);  
+	__raw_writel(MIIMCMD_scn_m, &rc32434_eth0_regs->miimcmd);  
+	while(__raw_readl(&rc32434_eth0_regs->miimind) & MIIMIND_nv_m);
+	
+	ERR("irq:%x		port_addr:%x	RDD:%x\n", 
+	    lp->rx_irq, port_addr, __raw_readl(&rc32434_eth0_regs->miimrdd));
+	duplex_status = (__raw_readl(&rc32434_eth0_regs->miimrdd) & 0x140)? ETHMAC2_fd_m: 0;
+	if(duplex_status != lp->duplex_mode) {
+		ERR("The MII-PHY is Auto-negotiated to %s-Duplex mode for Eth-%x\n", duplex_status? "Full":"Half", lp->rx_irq == 0x2c? 1:0);		
+		lp->duplex_mode = duplex_status;
+		rc32434_restart(dev);		
+	}
+	
+	lp->mii_phy_timer.expires = jiffies + 10 * HZ;	
+	add_timer(&lp->mii_phy_timer);
+	
+	spin_unlock_irqrestore(&lp->lock, flags);
+	
+}
+
+#ifdef	RC32434_REVISION	
+/* Ethernet Rx Overflow interrupt */
+static irqreturn_t
+rc32434_ovr_interrupt(int irq, void *dev_id)
+{
+	struct net_device *dev = (struct net_device *)dev_id;
+	struct rc32434_local *lp;
+	unsigned int ovr;
+	irqreturn_t retval = IRQ_NONE;
+	
+	ASSERT(dev != NULL);
+	
+	lp = (struct rc32434_local *)dev->priv;
+	spin_lock(&lp->lock);
+	ovr = __raw_readl(&lp->eth_regs->ethintfc);
+	
+	if(ovr & ETHINTFC_ovr_m) {
+		netif_stop_queue(dev);
+		
+		/* clear OVR bit */
+		__raw_writel((ovr & ~ETHINTFC_ovr_m), &lp->eth_regs->ethintfc);
+		
+		/* Restart interface */
+		rc32434_restart(dev);
+		retval = IRQ_HANDLED;
+	}
+	spin_unlock(&lp->lock);
+	
+	return retval;
+}
+
+#endif
+
+
+/* Ethernet Tx Underflow interrupt */
+static irqreturn_t
+rc32434_und_interrupt(int irq, void *dev_id)
+{
+	struct net_device *dev = (struct net_device *)dev_id;
+	struct rc32434_local *lp;
+	unsigned int und;
+	irqreturn_t retval = IRQ_NONE;
+	
+	ASSERT(dev != NULL);
+	
+	lp = (struct rc32434_local *)dev->priv;
+	
+	spin_lock(&lp->lock);
+	
+	und = __raw_readl(&lp->eth_regs->ethintfc);
+	
+	if(und & ETHINTFC_und_m) {
+		netif_stop_queue(dev);
+		
+		__raw_writel((und & ~ETHINTFC_und_m), &lp->eth_regs->ethintfc);
+		
+		/* Restart interface */
+		rc32434_restart(dev);
+		retval = IRQ_HANDLED;
+	}
+	
+	spin_unlock(&lp->lock);
+	
+	return retval;
+}
+
+
+/* Ethernet Rx DMA interrupt */
+static irqreturn_t
+rc32434_rx_dma_interrupt(int irq, void *dev_id)
+{
+	struct net_device *dev = (struct net_device *)dev_id;
+	struct rc32434_local* lp;
+	volatile u32 dmas,dmasm;
+	irqreturn_t retval;
+	
+	ASSERT(dev != NULL);
+	
+	lp = (struct rc32434_local *)dev->priv;
+	
+	spin_lock(&lp->lock);
+	dmas = __raw_readl(&lp->rx_dma_regs->dmas);
+	if(dmas & (DMAS_d_m|DMAS_h_m|DMAS_e_m)) {
+		/* Mask D H E bit in Rx DMA */
+		dmasm = __raw_readl(&lp->rx_dma_regs->dmasm);
+		__raw_writel(dmasm | (DMASM_d_m | DMASM_h_m | DMASM_e_m), &lp->rx_dma_regs->dmasm);
+#ifdef CONFIG_IDT_USE_NAPI
+		if(netif_rx_schedule_prep(dev))
+                        __netif_rx_schedule(dev);
+#else
+		tasklet_hi_schedule(lp->rx_tasklet);
+#endif
+		
+		if (dmas & DMAS_e_m)
+			ERR(": DMA error\n");
+		
+		retval = IRQ_HANDLED;
+	}
+	else
+		retval = IRQ_NONE;
+	
+	spin_unlock(&lp->lock);
+	return retval;
+}
+
+#ifdef CONFIG_IDT_USE_NAPI
+static int rc32434_poll(struct net_device *rx_data_dev, int *budget)
+#else
+static void rc32434_rx_tasklet(unsigned long rx_data_dev)
+#endif
+{
+	struct net_device *dev = (struct net_device *)rx_data_dev;	
+	struct rc32434_local* lp = netdev_priv(dev);
+	volatile DMAD_t  rd = &lp->rd_ring[lp->rx_next_done];
+	struct sk_buff *skb, *skb_new;
+	u8* pkt_buf;
+	u32 devcs, count, pkt_len, pktuncrc_len;
+	volatile u32 dmas;
+#ifdef CONFIG_IDT_USE_NAPI
+	u32 received = 0;
+	int rx_work_limit = min(*budget,dev->quota);
+#else
+	unsigned long 	flags;
+	spin_lock_irqsave(&lp->lock, flags);
+#endif
+
+	dma_cache_inv((u32)rd, sizeof(*rd));
+	while ( (count = RC32434_RBSIZE - (u32)DMA_COUNT(rd->control)) != 0) {
+#ifdef CONFIG_IDT_USE_NAPI
+		if(--rx_work_limit <0)
+                {
+                        break;
+                }
+#endif
+		/* init the var. used for the later operations within the while loop */
+		skb_new = NULL;
+		devcs = rd->devcs;
+		pkt_len = RCVPKT_LENGTH(devcs);
+		skb = lp->rx_skb[lp->rx_next_done];
+      
+		if (count < 64) {
+			lp->stats.rx_errors++;
+			lp->stats.rx_dropped++;			
+		}
+		else if ((devcs & ( ETHRX_ld_m)) !=	ETHRX_ld_m) {
+			/* check that this is a whole packet */
+			/* WARNING: DMA_FD bit incorrectly set in Rc32434 (errata ref #077) */
+			lp->stats.rx_errors++;
+			lp->stats.rx_dropped++;
+		}
+		else if ( (devcs & ETHRX_rok_m)  ) {
+			
+			{
+				/* must be the (first and) last descriptor then */
+				pkt_buf = (u8*)lp->rx_skb[lp->rx_next_done]->data;
+				
+				pktuncrc_len = pkt_len - 4;
+				/* invalidate the cache */
+				dma_cache_inv((unsigned long)pkt_buf, pktuncrc_len);
+				
+				/* Malloc up new buffer. */					  
+				skb_new = dev_alloc_skb(RC32434_RBSIZE + 2);					             	
+				
+				if (skb_new != NULL){
+					/* Make room */
+					skb_put(skb, pktuncrc_len);		    
+					
+					skb->protocol = eth_type_trans(skb, dev);
+					
+					/* pass the packet to upper layers */
+#ifdef CONFIG_IDT_USE_NAPI
+					netif_receive_skb(skb);
+#else
+					netif_rx(skb);
+#endif
+					
+					dev->last_rx = jiffies;
+					lp->stats.rx_packets++;
+					lp->stats.rx_bytes += pktuncrc_len;
+					
+					if (IS_RCV_MP(devcs))
+						lp->stats.multicast++;
+					
+					/* 16 bit align */						  
+					skb_reserve(skb_new, 2);	
+					
+					skb_new->dev = dev;
+					lp->rx_skb[lp->rx_next_done] = skb_new;
+				}
+				else {
+					ERR("no memory, dropping rx packet.\n");
+					lp->stats.rx_errors++;		
+					lp->stats.rx_dropped++;					
+				}
+			}
+			
+		}			
+		else {
+			/* This should only happen if we enable accepting broken packets */
+			lp->stats.rx_errors++;
+			lp->stats.rx_dropped++;
+			
+			/* add statistics counters */
+			if (IS_RCV_CRC_ERR(devcs)) {
+				DBG(2, "RX CRC error\n");
+				lp->stats.rx_crc_errors++;
+			} 
+			else if (IS_RCV_LOR_ERR(devcs)) {
+				DBG(2, "RX LOR error\n");
+				lp->stats.rx_length_errors++;
+			}				
+			else if (IS_RCV_LE_ERR(devcs)) {
+				DBG(2, "RX LE error\n");
+				lp->stats.rx_length_errors++;
+			}
+			else if (IS_RCV_OVR_ERR(devcs)) {
+				lp->stats.rx_over_errors++;
+			}
+			else if (IS_RCV_CV_ERR(devcs)) {
+				/* code violation */
+				DBG(2, "RX CV error\n");
+				lp->stats.rx_frame_errors++;
+			}
+			else if (IS_RCV_CES_ERR(devcs)) {
+				DBG(2, "RX Preamble error\n");
+			}
+		}
+		
+		rd->devcs = 0;
+		
+		/* restore descriptor's curr_addr */
+		if(skb_new)
+			rd->ca = CPHYSADDR(skb_new->data); 
+		else
+			rd->ca = CPHYSADDR(skb->data);
+		
+		rd->control = DMA_COUNT(RC32434_RBSIZE) |DMAD_cod_m |DMAD_iod_m;
+		lp->rd_ring[(lp->rx_next_done-1)& RC32434_RDS_MASK].control &=  ~(DMAD_cod_m); 	
+		
+		lp->rx_next_done = (lp->rx_next_done + 1) & RC32434_RDS_MASK;
+		dma_cache_wback((u32)rd, sizeof(*rd));
+		rd = &lp->rd_ring[lp->rx_next_done];
+		__raw_writel( ~DMAS_d_m, &lp->rx_dma_regs->dmas);
+	}	
+#ifdef CONFIG_IDT_USE_NAPI
+        dev->quota -= received;
+        *budget =- received;
+        if(rx_work_limit < 0)
+                goto not_done;
+#endif
+	
+	dmas = __raw_readl(&lp->rx_dma_regs->dmas);
+	
+	if(dmas & DMAS_h_m) {
+		__raw_writel( ~(DMAS_h_m | DMAS_e_m), &lp->rx_dma_regs->dmas);
+#ifdef RC32434_PROC_DEBUG
+		lp->dma_halt_cnt++;
+#endif
+		rd->devcs = 0;
+		skb = lp->rx_skb[lp->rx_next_done];
+		rd->ca = CPHYSADDR(skb->data);
+		dma_cache_wback((u32)rd, sizeof(*rd));
+		rc32434_chain_rx(lp,rd);
+	}
+	
+#ifdef CONFIG_IDT_USE_NAPI
+	netif_rx_complete(dev);
+#endif
+	/* Enable D H E bit in Rx DMA */
+	__raw_writel(__raw_readl(&lp->rx_dma_regs->dmasm) & ~(DMASM_d_m | DMASM_h_m |DMASM_e_m), &lp->rx_dma_regs->dmasm); 
+#ifdef CONFIG_IDT_USE_NAPI
+	return 0;
+ not_done:
+	return 1;
+#else
+	spin_unlock_irqrestore(&lp->lock, flags);
+	return;
+#endif
+
+	
+}	
+
+
+
+/* Ethernet Tx DMA interrupt */
+static irqreturn_t
+rc32434_tx_dma_interrupt(int irq, void *dev_id)
+{
+	struct net_device *dev = (struct net_device *)dev_id;
+	struct rc32434_local *lp;
+	volatile u32 dmas,dmasm;
+	irqreturn_t retval;
+	
+	ASSERT(dev != NULL);
+	
+	lp = (struct rc32434_local *)dev->priv;
+	
+	spin_lock(&lp->lock);
+	
+	dmas = __raw_readl(&lp->tx_dma_regs->dmas);
+	
+	if (dmas & (DMAS_f_m | DMAS_e_m)) {
+		dmasm = __raw_readl(&lp->tx_dma_regs->dmasm);
+		/* Mask F E bit in Tx DMA */
+		__raw_writel(dmasm | (DMASM_f_m | DMASM_e_m), &lp->tx_dma_regs->dmasm);
+		
+		tasklet_hi_schedule(lp->tx_tasklet);
+		
+		if(lp->tx_chain_status == filled && (__raw_readl(&(lp->tx_dma_regs->dmandptr)) == 0)) {
+			__raw_writel(CPHYSADDR(&lp->td_ring[lp->tx_chain_head]), &(lp->tx_dma_regs->dmandptr));			
+			lp->tx_chain_status = empty;
+			lp->tx_chain_head = lp->tx_chain_tail;
+			dev->trans_start = jiffies;
+		}
+		
+		if (dmas & DMAS_e_m)
+			ERR(": DMA error\n");
+		
+		retval = IRQ_HANDLED;
+	}
+	else
+		retval = IRQ_NONE;
+	
+	spin_unlock(&lp->lock);
+	
+	return retval;
+}
+
+
+static void rc32434_tx_tasklet(unsigned long tx_data_dev)
+{
+	struct net_device *dev = (struct net_device *)tx_data_dev;	
+	struct rc32434_local* lp = (struct rc32434_local *)dev->priv;
+	volatile DMAD_t td = &lp->td_ring[lp->tx_next_done];
+	u32 devcs;
+	unsigned long 	flags;
+	volatile u32 dmas;
+	
+	spin_lock_irqsave(&lp->lock, flags);
+	
+	/* process all desc that are done */
+	while(IS_DMA_FINISHED(td->control)) {
+		if(lp->tx_full == 1) {
+			netif_wake_queue(dev);
+			lp->tx_full = 0;
+		}
+		
+		devcs = lp->td_ring[lp->tx_next_done].devcs;    
+		if ((devcs & (ETHTX_fd_m | ETHTX_ld_m)) != (ETHTX_fd_m | ETHTX_ld_m)) {
+			lp->stats.tx_errors++;
+			lp->stats.tx_dropped++;				
+			
+			/* should never happen */
+			DBG(1, __FUNCTION__ ": split tx ignored\n");
+		}
+		else if (IS_TX_TOK(devcs)) {
+			lp->stats.tx_packets++;
+			lp->stats.tx_bytes+=lp->tx_skb[lp->tx_next_done]->len;
+		}
+		else {
+			lp->stats.tx_errors++;
+			lp->stats.tx_dropped++;				
+			
+			/* underflow */
+			if (IS_TX_UND_ERR(devcs)) 
+				lp->stats.tx_fifo_errors++;
+			
+			/* oversized frame */
+			if (IS_TX_OF_ERR(devcs))
+				lp->stats.tx_aborted_errors++;
+			
+			/* excessive deferrals */
+			if (IS_TX_ED_ERR(devcs))
+				lp->stats.tx_carrier_errors++;
+			
+			/* collisions: medium busy */
+			if (IS_TX_EC_ERR(devcs))
+				lp->stats.collisions++;
+			
+			/* late collision */
+			if (IS_TX_LC_ERR(devcs))
+				lp->stats.tx_window_errors++;
+			
+		}
+		
+		/* We must always free the original skb */
+		if (lp->tx_skb[lp->tx_next_done] != NULL) {
+			dev_kfree_skb_any(lp->tx_skb[lp->tx_next_done]);
+			lp->tx_skb[lp->tx_next_done] = NULL;
+		}
+		
+		lp->td_ring[lp->tx_next_done].control = DMAD_iof_m;
+		lp->td_ring[lp->tx_next_done].devcs = ETHTX_fd_m | ETHTX_ld_m;	
+		lp->td_ring[lp->tx_next_done].link = 0;
+		lp->td_ring[lp->tx_next_done].ca = 0;
+		lp->tx_count --;
+		
+		/* go on to next transmission */
+		lp->tx_next_done = (lp->tx_next_done + 1) & RC32434_TDS_MASK;
+		td = &lp->td_ring[lp->tx_next_done];
+		
+	}
+	
+	dmas = __raw_readl(&lp->tx_dma_regs->dmas);
+	__raw_writel( ~dmas, &lp->tx_dma_regs->dmas);
+	
+	/* Enable F E bit in Tx DMA */
+	__raw_writel(__raw_readl(&lp->tx_dma_regs->dmasm) & ~(DMASM_f_m | DMASM_e_m), &lp->tx_dma_regs->dmasm); 
+	spin_unlock_irqrestore(&lp->lock, flags);
+	
+}
+
+
+static struct net_device_stats * rc32434_get_stats(struct net_device *dev)
+{
+	struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
+	return &lp->stats;
+}
+
+
+/*
+ * Set or clear the multicast filter for this adaptor.
+ */
+static void rc32434_multicast_list(struct net_device *dev)
+{   
+	/* listen to broadcasts always and to treat 	*/
+	/*       IFF bits independantly	*/
+	struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
+	unsigned long flags;
+	u32 recognise = ETHARC_ab_m; 		/* always accept broadcasts */
+	
+	if (dev->flags & IFF_PROMISC)         		/* set promiscuous mode */
+		recognise |= ETHARC_pro_m;
+	
+	if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 15))
+		recognise |= ETHARC_am_m;    	  	/* all multicast & bcast */
+	else if (dev->mc_count > 0) {
+		DBG(2, __FUNCTION__ ": mc_count %d\n", dev->mc_count);
+		recognise |= ETHARC_am_m;    	  	/* for the time being */
+	}
+	
+	spin_lock_irqsave(&lp->lock, flags);
+	__raw_writel(recognise, &lp->eth_regs->etharc);
+	spin_unlock_irqrestore(&lp->lock, flags);
+}
+
+
+static void rc32434_tx_timeout(struct net_device *dev)
+{
+	struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
+	unsigned long flags;
+	
+	spin_lock_irqsave(&lp->lock, flags);
+	rc32434_restart(dev);
+	spin_unlock_irqrestore(&lp->lock, flags);
+	
+}
+
+
+/*
+ * Initialize the RC32434 ethernet controller.
+ */
+static int rc32434_init(struct net_device *dev)
+{
+	struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
+	int i, j;
+	
+	/* Disable DMA */       
+	rc32434_abort_tx(dev);
+	rc32434_abort_rx(dev); 
+	
+	/* reset ethernet logic */ 
+	__raw_writel(0, &lp->eth_regs->ethintfc);
+	while((__raw_readl(&lp->eth_regs->ethintfc) & ETHINTFC_rip_m))
+		dev->trans_start = jiffies;	
+	
+	/* Enable Ethernet Interface */ 
+	__raw_writel(ETHINTFC_en_m, &lp->eth_regs->ethintfc); 
+	
+#ifndef CONFIG_IDT_USE_NAPI
+	tasklet_disable(lp->rx_tasklet);
+#endif
+	tasklet_disable(lp->tx_tasklet);
+	
+	/* Initialize the transmit Descriptors */
+	for (i = 0; i < RC32434_NUM_TDS; i++) {
+		lp->td_ring[i].control = DMAD_iof_m;
+		lp->td_ring[i].devcs = ETHTX_fd_m | ETHTX_ld_m;
+		lp->td_ring[i].ca = 0;
+		lp->td_ring[i].link = 0;
+		if (lp->tx_skb[i] != NULL) {
+			dev_kfree_skb_any(lp->tx_skb[i]);
+			lp->tx_skb[i] = NULL;
+		}
+	}
+	lp->tx_next_done = lp->tx_chain_head = lp->tx_chain_tail = 	lp->tx_full = lp->tx_count = 0;
+	lp->	tx_chain_status = empty;
+	
+	/*
+	 * Initialize the receive descriptors so that they
+	 * become a circular linked list, ie. let the last
+	 * descriptor point to the first again.
+	 */
+	for (i=0; i<RC32434_NUM_RDS; i++) {
+		struct sk_buff *skb = lp->rx_skb[i];
+		
+		if (lp->rx_skb[i] == NULL) {
+			skb = dev_alloc_skb(RC32434_RBSIZE + 2);
+			if (skb == NULL) {
+				ERR("No memory in the system\n");
+				for (j = 0; j < RC32434_NUM_RDS; j ++)
+					if (lp->rx_skb[j] != NULL) 
+						dev_kfree_skb_any(lp->rx_skb[j]);
+				
+				return 1;
+			}
+			else {
+				skb->dev = dev;
+				skb_reserve(skb, 2);
+				lp->rx_skb[i] = skb;
+				lp->rd_ring[i].ca = CPHYSADDR(skb->data); 
+				
+			}
+		}
+		lp->rd_ring[i].control =	DMAD_iod_m | DMA_COUNT(RC32434_RBSIZE);
+		lp->rd_ring[i].devcs = 0;
+		lp->rd_ring[i].ca = CPHYSADDR(skb->data);
+		lp->rd_ring[i].link = CPHYSADDR(&lp->rd_ring[i+1]);
+		
+	}
+	/* loop back */
+	lp->rd_ring[RC32434_NUM_RDS-1].link = CPHYSADDR(&lp->rd_ring[0]);
+	lp->rx_next_done   = 0;
+	
+	lp->rd_ring[RC32434_NUM_RDS-1].control |= DMAD_cod_m;
+	lp->rx_chain_head = 0;
+	lp->rx_chain_tail = 0;
+	lp->rx_chain_status = empty;
+	
+	__raw_writel(0, &lp->rx_dma_regs->dmas);
+	/* Start Rx DMA */
+	rc32434_start_rx(lp, &lp->rd_ring[0]);
+	
+	/* Enable F E bit in Tx DMA */
+	__raw_writel(__raw_readl(&lp->tx_dma_regs->dmasm) & ~(DMASM_f_m | DMASM_e_m), &lp->tx_dma_regs->dmasm); 
+	/* Enable D H E bit in Rx DMA */
+	__raw_writel(__raw_readl(&lp->rx_dma_regs->dmasm) & ~(DMASM_d_m | DMASM_h_m | DMASM_e_m), &lp->rx_dma_regs->dmasm); 
+	
+	/* Accept only packets destined for this Ethernet device address */
+	__raw_writel(ETHARC_ab_m, &lp->eth_regs->etharc); 
+	
+	/* Set all Ether station address registers to their initial values */ 
+	__raw_writel(STATION_ADDRESS_LOW(dev), &lp->eth_regs->ethsal0); 
+	__raw_writel(STATION_ADDRESS_HIGH(dev), &lp->eth_regs->ethsah0);
+	
+	__raw_writel(STATION_ADDRESS_LOW(dev), &lp->eth_regs->ethsal1); 
+	__raw_writel(STATION_ADDRESS_HIGH(dev), &lp->eth_regs->ethsah1);
+	
+	__raw_writel(STATION_ADDRESS_LOW(dev), &lp->eth_regs->ethsal2); 
+	__raw_writel(STATION_ADDRESS_HIGH(dev), &lp->eth_regs->ethsah2);
+	
+	__raw_writel(STATION_ADDRESS_LOW(dev), &lp->eth_regs->ethsal3); 
+	__raw_writel(STATION_ADDRESS_HIGH(dev), &lp->eth_regs->ethsah3); 
+	
+	
+	/* Frame Length Checking, Pad Enable, CRC Enable, Full Duplex set */ 
+	__raw_writel(ETHMAC2_pe_m | ETHMAC2_cen_m | ETHMAC2_fd_m, &lp->eth_regs->ethmac2);  
+	//ETHMAC2_flc_m		ETHMAC2_fd_m	lp->duplex_mode
+	
+	/* Back to back inter-packet-gap */ 
+	__raw_writel(0x15, &lp->eth_regs->ethipgt); 
+	/* Non - Back to back inter-packet-gap */ 
+	__raw_writel(0x12, &lp->eth_regs->ethipgr); 
+	
+	/* Management Clock Prescaler Divisor */
+	/* Clock independent setting */
+	__raw_writel(((idt_cpu_freq)/MII_CLOCK+1) & ~1,
+		       &lp->eth_regs->ethmcp);
+	
+	/* don't transmit until fifo contains 48b */
+	__raw_writel(48, &lp->eth_regs->ethfifott);
+	
+	__raw_writel(ETHMAC1_re_m, &lp->eth_regs->ethmac1);
+	
+#ifndef CONFIG_IDT_USE_NAPI
+	tasklet_enable(lp->rx_tasklet);
+#endif
+	tasklet_enable(lp->tx_tasklet);
+	
+	netif_start_queue(dev);
+	
+	return 0; 
+}
+
+static struct platform_driver korina_driver = {
+	.driver.name = "korina",
+	.probe = rc32434_probe,
+	.remove = rc32434_remove,
+};
+
+static int __init rc32434_init_module(void)
+{
+	return platform_driver_register(&korina_driver);
+}
+
+static void rc32434_cleanup_module(void)
+{
+	return platform_driver_unregister(&korina_driver);
+}
+
+module_init(rc32434_init_module);
+module_exit(rc32434_cleanup_module);
diff --git a/target/linux/rb532/files-2.6.23/drivers/net/rc32434_eth.h b/target/linux/rb532/files-2.6.23/drivers/net/rc32434_eth.h
new file mode 100644
index 000000000..eaa0bfe51
--- /dev/null
+++ b/target/linux/rb532/files-2.6.23/drivers/net/rc32434_eth.h
@@ -0,0 +1,178 @@
+/**************************************************************************
+ *
+ *  BRIEF MODULE DESCRIPTION
+ *     Definitions for IDT RC32434 on-chip ethernet controller.
+ *
+ *  Copyright 2004 IDT Inc. (rischelp@idt.com)
+ *         
+ *  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  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ **************************************************************************
+ * May 2004 rkt, neb
+ *
+ * Initial Release
+ *
+ * Aug 2004
+ *
+ * Added NAPI
+ *
+ **************************************************************************
+ */
+
+
+#include  <asm/rc32434/rc32434.h>
+#include  <asm/rc32434/dma_v.h>
+#include  <asm/rc32434/eth_v.h>
+
+#define CONFIG_IDT_USE_NAPI 1
+#define RC32434_DEBUG	2
+//#define RC32434_PROC_DEBUG
+#undef	RC32434_DEBUG
+
+#ifdef RC32434_DEBUG
+
+/* use 0 for production, 1 for verification, >2 for debug */
+static int rc32434_debug = RC32434_DEBUG;
+#define ASSERT(expr) \
+	if(!(expr)) {	\
+		printk( "Assertion failed! %s,%s,%s,line=%d\n",	\
+		#expr,__FILE__,__FUNCTION__,__LINE__);		}
+#define DBG(lvl, format, arg...) if (rc32434_debug > lvl) printk(KERN_INFO "%s: " format, dev->name , ## arg)
+#else
+#define ASSERT(expr) do {} while (0)
+#define DBG(lvl, format, arg...) do {} while (0)
+#endif
+
+#define INFO(format, arg...) printk(KERN_INFO "%s: " format, dev->name , ## arg)
+#define ERR(format, arg...) printk(KERN_ERR "%s: " format, dev->name , ## arg)
+#define WARN(format, arg...) printk(KERN_WARNING "%s: " format, dev->name , ## arg)		
+
+/* the following must be powers of two */
+#ifdef CONFIG_IDT_USE_NAPI
+#define RC32434_NUM_RDS    64    		/* number of receive descriptors */
+#define RC32434_NUM_TDS    64    		/* number of transmit descriptors */
+#else
+#define RC32434_NUM_RDS    128    		/* number of receive descriptors */
+#define RC32434_NUM_TDS    128    		/* number of transmit descriptors */
+#endif
+
+#define RC32434_RBSIZE     1536  		/* size of one resource buffer = Ether MTU */
+#define RC32434_RDS_MASK   (RC32434_NUM_RDS-1)
+#define RC32434_TDS_MASK   (RC32434_NUM_TDS-1)
+#define RD_RING_SIZE (RC32434_NUM_RDS * sizeof(struct DMAD_s))
+#define TD_RING_SIZE (RC32434_NUM_TDS * sizeof(struct DMAD_s))
+
+#define RC32434_TX_TIMEOUT HZ * 100
+
+#define rc32434_eth0_regs ((ETH_t)(ETH0_VirtualAddress))
+#define rc32434_eth1_regs ((ETH_t)(ETH1_VirtualAddress))
+
+enum status	{ filled,	empty};
+#define IS_DMA_FINISHED(X)   (((X) & (DMAD_f_m)) != 0)
+#define IS_DMA_DONE(X)   (((X) & (DMAD_d_m)) != 0)
+
+
+/* Information that need to be kept for each board. */
+struct rc32434_local {
+	ETH_t  eth_regs;
+	DMA_Chan_t  rx_dma_regs;
+	DMA_Chan_t  tx_dma_regs;
+	volatile DMAD_t   td_ring;			/* transmit descriptor ring */ 
+	volatile DMAD_t   rd_ring;			/* receive descriptor ring  */
+	
+	struct sk_buff* tx_skb[RC32434_NUM_TDS]; 	/* skbuffs for pkt to trans */
+	struct sk_buff* rx_skb[RC32434_NUM_RDS]; 	/* skbuffs for pkt to trans */
+	
+#ifndef CONFIG_IDT_USE_NAPI
+	struct tasklet_struct * rx_tasklet;
+#endif
+	struct tasklet_struct * tx_tasklet;
+	
+	int	rx_next_done;
+	int	rx_chain_head;
+	int	rx_chain_tail;
+	enum status	rx_chain_status;
+	
+	int	tx_next_done;
+	int	tx_chain_head;
+	int	tx_chain_tail;
+	enum status	tx_chain_status;
+	int tx_count;			
+	int	tx_full;
+	
+	struct timer_list    mii_phy_timer;
+	unsigned long duplex_mode;
+	
+	int   	rx_irq;
+	int    tx_irq;
+	int    ovr_irq;
+	int    und_irq;
+	
+	struct net_device_stats stats;
+	spinlock_t lock; 
+	
+	/* debug /proc entry */
+	struct proc_dir_entry *ps;
+	int dma_halt_cnt;  int dma_run_cnt;
+};
+
+extern unsigned int idt_cpu_freq;
+
+/* Index to functions, as function prototypes. */
+static int rc32434_open(struct net_device *dev);
+static int rc32434_send_packet(struct sk_buff *skb, struct net_device *dev);
+static void rc32434_mii_handler(unsigned long data);
+static irqreturn_t  rc32434_und_interrupt(int irq, void *dev_id);
+static irqreturn_t rc32434_rx_dma_interrupt(int irq, void *dev_id);
+static irqreturn_t rc32434_tx_dma_interrupt(int irq, void *dev_id);
+#ifdef	RC32434_REVISION	
+static irqreturn_t rc32434_ovr_interrupt(int irq, void *dev_id);
+#endif
+static int  rc32434_close(struct net_device *dev);
+static struct net_device_stats *rc32434_get_stats(struct net_device *dev);
+static void rc32434_multicast_list(struct net_device *dev);
+static int  rc32434_init(struct net_device *dev);
+static void rc32434_tx_timeout(struct net_device *dev);
+
+static void rc32434_tx_tasklet(unsigned long tx_data_dev);
+#ifdef CONFIG_IDT_USE_NAPI
+static int rc32434_poll(struct net_device *rx_data_dev, int *budget);
+#else
+static void rc32434_rx_tasklet(unsigned long rx_data_dev);
+#endif
+static void rc32434_cleanup_module(void);
+
+
+static inline void rc32434_abort_dma(struct net_device *dev, DMA_Chan_t ch)
+{
+	if (__raw_readl(&ch->dmac) & DMAC_run_m) {
+		__raw_writel(0x10, &ch->dmac); 
+		
+		while (!(__raw_readl(&ch->dmas) & DMAS_h_m))
+			dev->trans_start = jiffies;		
+		
+		__raw_writel(0, &ch->dmas);  
+	}
+	
+	__raw_writel(0, &ch->dmadptr); 
+	__raw_writel(0, &ch->dmandptr); 
+}