Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

4 files changed, 3443 insertions, 0 deletions

diff --git a/drivers/usb/misc/sisusbvga/Kconfig b/drivers/usb/misc/sisusbvga/Kconfig
new file mode 100644
index 000000000000..3957e144caf7
--- /dev/null
+++ b/drivers/usb/misc/sisusbvga/Kconfig
@@ -0,0 +1,14 @@
+
+config USB_SISUSBVGA
+	tristate "USB 2.0 SVGA dongle support (Net2280/SiS315)"
+	depends on USB && USB_EHCI_HCD
+        ---help---
+	  Say Y here if you intend to attach a USB2VGA dongle based on a
+	  Net2280 and a SiS315 chip. 
+	  
+	  Note that this device requires a USB 2.0 host controller. It will not 
+	  work with USB 1.x controllers.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called sisusb.  If unsure, say N.
+
diff --git a/drivers/usb/misc/sisusbvga/Makefile b/drivers/usb/misc/sisusbvga/Makefile
new file mode 100644
index 000000000000..76f1643ceaf8
--- /dev/null
+++ b/drivers/usb/misc/sisusbvga/Makefile
@@ -0,0 +1,6 @@
+#
+# Makefile for the sisusb driver (if driver is inside kernel tree).
+#
+
+obj-$(CONFIG_USB_SISUSBVGA) += sisusb.o
+
diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c
new file mode 100644
index 000000000000..be163b330167
--- /dev/null
+++ b/drivers/usb/misc/sisusbvga/sisusb.c
@@ -0,0 +1,3145 @@
+/*
+ * sisusb - usb kernel driver for SiS315(E) based USB2VGA dongles
+ *
+ * Copyright (C) 2005 by Thomas Winischhofer, Vienna, Austria
+ *
+ * If distributed as part of the Linux kernel, this code is licensed under the
+ * terms of the GPL v2.
+ *
+ * Otherwise, the following license terms apply:
+ *
+ * * Redistribution and use in source and binary forms, with or without
+ * * modification, are permitted provided that the following conditions
+ * * are met:
+ * * 1) Redistributions of source code must retain the above copyright
+ * *    notice, this list of conditions and the following disclaimer.
+ * * 2) Redistributions in binary form must reproduce the above copyright
+ * *    notice, this list of conditions and the following disclaimer in the
+ * *    documentation and/or other materials provided with the distribution.
+ * * 3) The name of the author may not be used to endorse or promote products
+ * *    derived from this software without specific psisusbr written permission.
+ * *
+ * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESSED 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.
+ *
+ * Author: 	Thomas Winischhofer <thomas@winischhofer.net>
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/poll.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/kref.h>
+#include <linux/usb.h>
+#include <linux/smp_lock.h>
+
+#include "sisusb.h"
+
+#define SISUSB_DONTSYNC
+
+/* Forward declarations / clean-up routines */
+
+static struct usb_driver sisusb_driver;
+
+static DECLARE_MUTEX(disconnect_sem);
+
+static void
+sisusb_free_buffers(struct sisusb_usb_data *sisusb)
+{
+	int i;
+
+	for (i = 0; i < NUMOBUFS; i++) {
+		if (sisusb->obuf[i]) {
+			usb_buffer_free(sisusb->sisusb_dev, sisusb->obufsize,
+				sisusb->obuf[i], sisusb->transfer_dma_out[i]);
+			sisusb->obuf[i] = NULL;
+		}
+	}
+	if (sisusb->ibuf) {
+		usb_buffer_free(sisusb->sisusb_dev, sisusb->ibufsize,
+			sisusb->ibuf, sisusb->transfer_dma_in);
+		sisusb->ibuf = NULL;
+	}
+}
+
+static void
+sisusb_free_urbs(struct sisusb_usb_data *sisusb)
+{
+	int i;
+
+	for (i = 0; i < NUMOBUFS; i++) {
+		usb_free_urb(sisusb->sisurbout[i]);
+		sisusb->sisurbout[i] = NULL;
+	}
+	usb_free_urb(sisusb->sisurbin);
+	sisusb->sisurbin = NULL;
+}
+
+/* Level 0: USB transport layer */
+
+/* 1. out-bulks */
+
+/* out-urb management */
+
+/* Return 1 if all free, 0 otherwise */
+static int
+sisusb_all_free(struct sisusb_usb_data *sisusb)
+{
+	int i;
+
+	for (i = 0; i < sisusb->numobufs; i++) {
+
+		if (sisusb->urbstatus[i] & SU_URB_BUSY)
+			return 0;
+
+	}
+
+	return 1;
+}
+
+/* Kill all busy URBs */
+static void
+sisusb_kill_all_busy(struct sisusb_usb_data *sisusb)
+{
+	int i;
+
+	if (sisusb_all_free(sisusb))
+		return;
+
+	for (i = 0; i < sisusb->numobufs; i++) {
+
+		if (sisusb->urbstatus[i] & SU_URB_BUSY)
+			usb_kill_urb(sisusb->sisurbout[i]);
+
+	}
+}
+
+/* Return 1 if ok, 0 if error (not all complete within timeout) */
+static int
+sisusb_wait_all_out_complete(struct sisusb_usb_data *sisusb)
+{
+	int timeout = 5 * HZ, i = 1;
+
+	wait_event_timeout(sisusb->wait_q,
+				(i = sisusb_all_free(sisusb)),
+				 timeout);
+
+	return i;
+}
+
+static int
+sisusb_outurb_available(struct sisusb_usb_data *sisusb)
+{
+	int i;
+
+	for (i = 0; i < sisusb->numobufs; i++) {
+
+		if ((sisusb->urbstatus[i] & (SU_URB_BUSY|SU_URB_ALLOC)) == 0)
+			return i;
+
+	}
+
+	return -1;
+}
+
+static int
+sisusb_get_free_outbuf(struct sisusb_usb_data *sisusb)
+{
+	int i, timeout = 5 * HZ;
+
+	wait_event_timeout(sisusb->wait_q,
+				((i = sisusb_outurb_available(sisusb)) >= 0),
+				timeout);
+
+	return i;
+}
+
+static int
+sisusb_alloc_outbuf(struct sisusb_usb_data *sisusb)
+{
+	int i;
+
+	i = sisusb_outurb_available(sisusb);
+
+	if (i >= 0)
+		sisusb->urbstatus[i] |= SU_URB_ALLOC;
+
+	return i;
+}
+
+static void
+sisusb_free_outbuf(struct sisusb_usb_data *sisusb, int index)
+{
+	if ((index >= 0) && (index < sisusb->numobufs))
+		sisusb->urbstatus[index] &= ~SU_URB_ALLOC;
+}
+
+/* completion callback */
+
+static void
+sisusb_bulk_completeout(struct urb *urb, struct pt_regs *regs)
+{
+	struct sisusb_urb_context *context = urb->context;
+	struct sisusb_usb_data *sisusb;
+
+	if (!context)
+		return;
+
+	sisusb = context->sisusb;
+
+	if (!sisusb || !sisusb->sisusb_dev || !sisusb->present)
+		return;
+
+#ifndef SISUSB_DONTSYNC
+	if (context->actual_length)
+		*(context->actual_length) += urb->actual_length;
+#endif
+
+	sisusb->urbstatus[context->urbindex] &= ~SU_URB_BUSY;
+	wake_up(&sisusb->wait_q);
+}
+
+static int
+sisusb_bulkout_msg(struct sisusb_usb_data *sisusb, int index, unsigned int pipe, void *data,
+		int len, int *actual_length, int timeout, unsigned int tflags,
+		dma_addr_t transfer_dma)
+{
+	struct urb *urb = sisusb->sisurbout[index];
+	int retval, byteswritten = 0;
+
+	/* Set up URB */
+	urb->transfer_flags = 0;
+
+	usb_fill_bulk_urb(urb, sisusb->sisusb_dev, pipe, data, len,
+		sisusb_bulk_completeout, &sisusb->urbout_context[index]);
+
+	urb->transfer_flags |= (tflags | URB_ASYNC_UNLINK);
+	urb->actual_length = 0;
+
+	if ((urb->transfer_dma = transfer_dma))
+		urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+	/* Set up context */
+	sisusb->urbout_context[index].actual_length = (timeout) ?
+						NULL : actual_length;
+
+	/* Declare this urb/buffer in use */
+	sisusb->urbstatus[index] |= SU_URB_BUSY;
+
+	/* Submit URB */
+	retval = usb_submit_urb(urb, GFP_ATOMIC);
+
+	/* If OK, and if timeout > 0, wait for completion */
+	if ((retval == 0) && timeout) {
+		wait_event_timeout(sisusb->wait_q,
+				   (!(sisusb->urbstatus[index] & SU_URB_BUSY)),
+				   timeout);
+		if (sisusb->urbstatus[index] & SU_URB_BUSY) {
+			/* URB timed out... kill it and report error */
+			usb_kill_urb(urb);
+			retval = -ETIMEDOUT;
+		} else {
+			/* Otherwise, report urb status */
+			retval = urb->status;
+			byteswritten = urb->actual_length;
+		}
+	}
+
+	if (actual_length)
+		*actual_length = byteswritten;
+
+	return retval;
+}
+
+/* 2. in-bulks */
+
+/* completion callback */
+
+static void
+sisusb_bulk_completein(struct urb *urb, struct pt_regs *regs)
+{
+	struct sisusb_usb_data *sisusb = urb->context;
+
+	if (!sisusb || !sisusb->sisusb_dev || !sisusb->present)
+		return;
+
+	sisusb->completein = 1;
+	wake_up(&sisusb->wait_q);
+}
+
+static int
+sisusb_bulkin_msg(struct sisusb_usb_data *sisusb, unsigned int pipe, void *data, int len,
+		int *actual_length, int timeout, unsigned int tflags, dma_addr_t transfer_dma)
+{
+	struct urb *urb = sisusb->sisurbin;
+	int retval, readbytes = 0;
+
+	urb->transfer_flags = 0;
+
+	usb_fill_bulk_urb(urb, sisusb->sisusb_dev, pipe, data, len,
+			sisusb_bulk_completein, sisusb);
+
+	urb->transfer_flags |= (tflags | URB_ASYNC_UNLINK);
+	urb->actual_length = 0;
+
+	if ((urb->transfer_dma = transfer_dma))
+		urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+	sisusb->completein = 0;
+	retval = usb_submit_urb(urb, GFP_ATOMIC);
+	if (retval == 0) {
+		wait_event_timeout(sisusb->wait_q, sisusb->completein, timeout);
+		if (!sisusb->completein) {
+			/* URB timed out... kill it and report error */
+			usb_kill_urb(urb);
+			retval = -ETIMEDOUT;
+		} else {
+			/* URB completed within timout */
+			retval = urb->status;
+			readbytes = urb->actual_length;
+		}
+	}
+
+	if (actual_length)
+		*actual_length = readbytes;
+
+	return retval;
+}
+
+
+/* Level 1:  */
+
+/* Send a bulk message of variable size
+ *
+ * To copy the data from userspace, give pointer to "userbuffer",
+ * to copy from (non-DMA) kernel memory, give "kernbuffer". If
+ * both of these are NULL, it is assumed, that the transfer
+ * buffer "sisusb->obuf[index]" is set up with the data to send.
+ * Index is ignored if either kernbuffer or userbuffer is set.
+ * If async is nonzero, URBs will be sent without waiting for
+ * completion of the previous URB.
+ *
+ * (return 0 on success)
+ */
+
+static int sisusb_send_bulk_msg(struct sisusb_usb_data *sisusb, int ep, int len,
+		char *kernbuffer, const char __user *userbuffer, int index,
+		ssize_t *bytes_written, unsigned int tflags, int async)
+{
+	int result = 0, retry, count = len;
+	int passsize, thispass, transferred_len = 0;
+	int fromuser = (userbuffer != NULL) ? 1 : 0;
+	int fromkern = (kernbuffer != NULL) ? 1 : 0;
+	unsigned int pipe;
+	char *buffer;
+
+	(*bytes_written) = 0;
+
+	/* Sanity check */
+	if (!sisusb || !sisusb->present || !sisusb->sisusb_dev)
+		return -ENODEV;
+
+	/* If we copy data from kernel or userspace, force the
+	 * allocation of a buffer/urb. If we have the data in
+	 * the transfer buffer[index] already, reuse the buffer/URB
+	 * if the length is > buffer size. (So, transmitting
+	 * large data amounts directly from the transfer buffer
+	 * treats the buffer as a ring buffer. However, we need
+	 * to sync in this case.)
+	 */
+	if (fromuser || fromkern)
+		index = -1;
+	else if (len > sisusb->obufsize)
+		async = 0;
+
+	pipe = usb_sndbulkpipe(sisusb->sisusb_dev, ep);
+
+	do {
+		passsize = thispass = (sisusb->obufsize < count) ?
+						sisusb->obufsize : count;
+
+		if (index < 0)
+			index = sisusb_get_free_outbuf(sisusb);
+
+		if (index < 0)
+			return -EIO;
+
+		buffer = sisusb->obuf[index];
+
+		if (fromuser) {
+
+			if (copy_from_user(buffer, userbuffer, passsize))
+				return -EFAULT;
+
+			userbuffer += passsize;
+
+		} else if (fromkern) {
+
+			memcpy(buffer, kernbuffer, passsize);
+			kernbuffer += passsize;
+
+		}
+
+		retry = 5;
+		while (thispass) {
+
+			if (!sisusb->sisusb_dev)
+				return -ENODEV;
+
+			result = sisusb_bulkout_msg(sisusb,
+						index,
+						pipe,
+						buffer,
+						thispass,
+						&transferred_len,
+						async ? 0 : 5 * HZ,
+						tflags,
+						sisusb->transfer_dma_out[index]);
+
+			if (result == -ETIMEDOUT) {
+
+				/* Will not happen if async */
+				if (!retry--)
+					return -ETIME;
+
+				continue;
+
+			} else if ((result == 0) && !async && transferred_len) {
+
+				thispass -= transferred_len;
+				if (thispass) {
+					if (sisusb->transfer_dma_out) {
+						/* If DMA, copy remaining
+						 * to beginning of buffer
+						 */
+						memcpy(buffer,
+						       buffer + transferred_len,
+						       thispass);
+					} else {
+						/* If not DMA, simply increase
+						 * the pointer
+						 */
+						buffer += transferred_len;
+					}
+				}
+
+			} else
+				break;
+		};
+
+		if (result)
+			return result;
+
+		(*bytes_written) += passsize;
+		count            -= passsize;
+
+		/* Force new allocation in next iteration */
+		if (fromuser || fromkern)
+			index = -1;
+
+	} while (count > 0);
+
+	if (async) {
+#ifdef SISUSB_DONTSYNC
+		(*bytes_written) = len;
+		/* Some URBs/buffers might be busy */
+#else
+		sisusb_wait_all_out_complete(sisusb);
+		(*bytes_written) = transferred_len;
+		/* All URBs and all buffers are available */
+#endif
+	}
+
+	return ((*bytes_written) == len) ? 0 : -EIO;
+}
+
+/* Receive a bulk message of variable size
+ *
+ * To copy the data to userspace, give pointer to "userbuffer",
+ * to copy to kernel memory, give "kernbuffer". One of them
+ * MUST be set. (There is no technique for letting the caller
+ * read directly from the ibuf.)
+ *
+ */
+
+static int sisusb_recv_bulk_msg(struct sisusb_usb_data *sisusb, int ep, int len,
+		void *kernbuffer, char __user *userbuffer, ssize_t *bytes_read,
+		unsigned int tflags)
+{
+	int result = 0, retry, count = len;
+	int bufsize, thispass, transferred_len;
+	unsigned int pipe;
+	char *buffer;
+
+	(*bytes_read) = 0;
+
+	/* Sanity check */
+	if (!sisusb || !sisusb->present || !sisusb->sisusb_dev)
+		return -ENODEV;
+
+	pipe = usb_rcvbulkpipe(sisusb->sisusb_dev, ep);
+	buffer = sisusb->ibuf;
+	bufsize = sisusb->ibufsize;
+
+	retry = 5;
+
+#ifdef SISUSB_DONTSYNC
+	if (!(sisusb_wait_all_out_complete(sisusb)))
+		return -EIO;
+#endif
+
+	while (count > 0) {
+
+		if (!sisusb->sisusb_dev)
+			return -ENODEV;
+
+		thispass = (bufsize < count) ? bufsize : count;
+
+		result = sisusb_bulkin_msg(sisusb,
+					   pipe,
+					   buffer,
+					   thispass,
+					   &transferred_len,
+					   5 * HZ,
+					   tflags,
+					   sisusb->transfer_dma_in);
+
+		if (transferred_len)
+			thispass = transferred_len;
+
+		else if (result == -ETIMEDOUT) {
+
+			if (!retry--)
+				return -ETIME;
+
+			continue;
+
+		} else
+			return -EIO;
+
+
+		if (thispass) {
+
+			(*bytes_read) += thispass;
+			count         -= thispass;
+
+			if (userbuffer) {
+
+				if (copy_to_user(userbuffer, buffer, thispass))
+					return -EFAULT;
+
+				userbuffer += thispass;
+
+			} else {
+
+				memcpy(kernbuffer, buffer, thispass);
+				kernbuffer += thispass;
+
+			}
+
+		}
+
+	}
+
+	return ((*bytes_read) == len) ? 0 : -EIO;
+}
+
+static int sisusb_send_packet(struct sisusb_usb_data *sisusb, int len,
+						struct sisusb_packet *packet)
+{
+	int ret;
+	ssize_t bytes_transferred = 0;
+	__le32 tmp;
+
+	if (len == 6)
+		packet->data = 0;
+
+#ifdef SISUSB_DONTSYNC
+	if (!(sisusb_wait_all_out_complete(sisusb)))
+		return 1;
+#endif
+
+	/* Eventually correct endianness */
+	SISUSB_CORRECT_ENDIANNESS_PACKET(packet);
+
+	/* 1. send the packet */
+	ret = sisusb_send_bulk_msg(sisusb, SISUSB_EP_GFX_OUT, len,
+			(char *)packet, NULL, 0, &bytes_transferred, 0, 0);
+
+	if ((ret == 0) && (len == 6)) {
+
+		/* 2. if packet len == 6, it means we read, so wait for 32bit
+		 *    return value and write it to packet->data
+		 */
+		ret = sisusb_recv_bulk_msg(sisusb, SISUSB_EP_GFX_IN, 4,
+				(char *)&tmp, NULL, &bytes_transferred, 0);
+
+		packet->data = le32_to_cpu(tmp);
+	}
+
+	return ret;
+}
+
+static int sisusb_send_bridge_packet(struct sisusb_usb_data *sisusb, int len,
+					struct sisusb_packet *packet,
+					unsigned int tflags)
+{
+	int ret;
+	ssize_t bytes_transferred = 0;
+	__le32 tmp;
+
+	if (len == 6)
+		packet->data = 0;
+
+#ifdef SISUSB_DONTSYNC
+	if (!(sisusb_wait_all_out_complete(sisusb)))
+		return 1;
+#endif
+
+	/* Eventually correct endianness */
+	SISUSB_CORRECT_ENDIANNESS_PACKET(packet);
+
+	/* 1. send the packet */
+	ret = sisusb_send_bulk_msg(sisusb, SISUSB_EP_BRIDGE_OUT, len,
+			(char *)packet, NULL, 0, &bytes_transferred, tflags, 0);
+
+	if ((ret == 0) && (len == 6)) {
+
+		/* 2. if packet len == 6, it means we read, so wait for 32bit
+		 *    return value and write it to packet->data
+		 */
+		ret = sisusb_recv_bulk_msg(sisusb, SISUSB_EP_BRIDGE_IN, 4,
+				(char *)&tmp, NULL, &bytes_transferred, 0);
+
+		packet->data = le32_to_cpu(tmp);
+	}
+
+	return ret;
+}
+
+/* access video memory and mmio (return 0 on success) */
+
+/* Low level */
+
+/* The following routines assume being used to transfer byte, word,
+ * long etc.
+ * This means that they assume "data" in machine endianness format.
+ */
+
+static int sisusb_write_memio_byte(struct sisusb_usb_data *sisusb, int type,
+							u32 addr, u8 data)
+{
+	struct sisusb_packet packet;
+	int ret;
+
+	packet.header  = (1 << (addr & 3)) | (type << 6);
+	packet.address = addr & ~3;
+	packet.data    = data << ((addr & 3) << 3);
+	ret = sisusb_send_packet(sisusb, 10, &packet);
+	return ret;
+}
+
+static int sisusb_write_memio_word(struct sisusb_usb_data *sisusb, int type,
+							u32 addr, u16 data)
+{
+	struct sisusb_packet packet;
+	int ret = 0;
+
+	packet.address = addr & ~3;
+
+	switch (addr & 3) {
+		case 0:
+			packet.header = (type << 6) | 0x0003;
+			packet.data   = (u32)data;
+			ret = sisusb_send_packet(sisusb, 10, &packet);
+			break;
+		case 1:
+			packet.header = (type << 6) | 0x0006;
+			packet.data   = (u32)data << 8;
+			ret = sisusb_send_packet(sisusb, 10, &packet);
+			break;
+		case 2:
+			packet.header = (type << 6) | 0x000c;
+			packet.data   = (u32)data << 16;
+			ret = sisusb_send_packet(sisusb, 10, &packet);
+			break;
+		case 3:
+			packet.header = (type << 6) | 0x0008;
+			packet.data   = (u32)data << 24;
+			ret = sisusb_send_packet(sisusb, 10, &packet);
+			packet.header = (type << 6) | 0x0001;
+			packet.address = (addr & ~3) + 4;
+			packet.data   = (u32)data >> 8;
+			ret |= sisusb_send_packet(sisusb, 10, &packet);
+	}
+
+	return ret;
+}
+
+static int sisusb_write_memio_24bit(struct sisusb_usb_data *sisusb, int type,
+							u32 addr, u32 data)
+{
+	struct sisusb_packet packet;
+	int ret = 0;
+
+	packet.address = addr & ~3;
+
+	switch (addr & 3) {
+		case 0:
+			packet.header  = (type << 6) | 0x0007;
+			packet.data    = data & 0x00ffffff;
+			ret = sisusb_send_packet(sisusb, 10, &packet);
+			break;
+		case 1:
+			packet.header  = (type << 6) | 0x000e;
+			packet.data    = data << 8;
+			ret = sisusb_send_packet(sisusb, 10, &packet);
+			break;
+		case 2:
+			packet.header  = (type << 6) | 0x000c;
+			packet.data    = data << 16;
+			ret = sisusb_send_packet(sisusb, 10, &packet);
+			packet.header  = (type << 6) | 0x0001;
+			packet.address = (addr & ~3) + 4;
+			packet.data    = (data >> 16) & 0x00ff;
+			ret |= sisusb_send_packet(sisusb, 10, &packet);
+			break;
+		case 3:
+			packet.header  = (type << 6) | 0x0008;
+			packet.data    = data << 24;
+			ret = sisusb_send_packet(sisusb, 10, &packet);
+			packet.header  = (type << 6) | 0x0003;
+			packet.address = (addr & ~3) + 4;
+			packet.data    = (data >> 8) & 0xffff;
+			ret |= sisusb_send_packet(sisusb, 10, &packet);
+	}
+
+	return ret;
+}
+
+static int sisusb_write_memio_long(struct sisusb_usb_data *sisusb, int type,
+							u32 addr, u32 data)
+{
+	struct sisusb_packet packet;
+	int ret = 0;
+
+	packet.address = addr & ~3;
+
+	switch (addr & 3) {
+		case 0:
+			packet.header  = (type << 6) | 0x000f;
+			packet.data    = data;
+			ret = sisusb_send_packet(sisusb, 10, &packet);
+			break;
+		case 1:
+			packet.header  = (type << 6) | 0x000e;
+			packet.data    = data << 8;
+			ret = sisusb_send_packet(sisusb, 10, &packet);
+			packet.header  = (type << 6) | 0x0001;
+			packet.address = (addr & ~3) + 4;
+			packet.data    = data >> 24;
+			ret |= sisusb_send_packet(sisusb, 10, &packet);
+			break;
+		case 2:
+			packet.header  = (type << 6) | 0x000c;
+			packet.data    = data << 16;
+			ret = sisusb_send_packet(sisusb, 10, &packet);
+			packet.header  = (type << 6) | 0x0003;
+			packet.address = (addr & ~3) + 4;
+			packet.data    = data >> 16;
+			ret |= sisusb_send_packet(sisusb, 10, &packet);
+			break;
+		case 3:
+			packet.header  = (type << 6) | 0x0008;
+			packet.data    = data << 24;
+			ret = sisusb_send_packet(sisusb, 10, &packet);
+			packet.header  = (type << 6) | 0x0007;
+			packet.address = (addr & ~3) + 4;
+			packet.data    = data >> 8;
+			ret |= sisusb_send_packet(sisusb, 10, &packet);
+	}
+
+	return ret;
+}
+
+/* The xxx_bulk routines copy a buffer of variable size. They treat the
+ * buffer as chars, therefore lsb/msb has to be corrected if using the
+ * byte/word/long/etc routines for speed-up
+ *
+ * If data is from userland, set "userbuffer" (and clear "kernbuffer"),
+ * if data is in kernel space, set "kernbuffer" (and clear "userbuffer");
+ * if neither "kernbuffer" nor "userbuffer" are given, it is assumed
+ * that the data already is in the transfer buffer "sisusb->obuf[index]".
+ */
+
+static int sisusb_write_mem_bulk(struct sisusb_usb_data *sisusb, u32 addr,
+				char *kernbuffer, int length,
+				const char __user *userbuffer, int index,
+				ssize_t *bytes_written)
+{
+	struct sisusb_packet packet;
+	int  ret = 0;
+	static int msgcount = 0;
+	u8   swap8, fromkern = kernbuffer ? 1 : 0;
+	u16  swap16;
+	u32  swap32, flag = (length >> 28) & 1;
+	char buf[4];
+
+	/* if neither kernbuffer not userbuffer are given, assume
+	 * data in obuf
+	 */
+	if (!fromkern && !userbuffer)
+		kernbuffer = sisusb->obuf[index];
+
+	(*bytes_written = 0);
+
+	length &= 0x00ffffff;
+
+	while (length) {
+
+	    switch (length) {
+
+		case 0:
+			return ret;
+
+		case 1:
+			if (userbuffer) {
+				if (get_user(swap8, (u8 __user *)userbuffer))
+					return -EFAULT;
+			} else
+				swap8 = kernbuffer[0];
+
+			ret = sisusb_write_memio_byte(sisusb,
+							SISUSB_TYPE_MEM,
+							addr, swap8);
+
+			if (!ret)
+				(*bytes_written)++;
+
+			return ret;
+
+		case 2:
+			if (userbuffer) {
+				if (get_user(swap16, (u16 __user *)userbuffer))
+					return -EFAULT;
+			} else
+				swap16 = (kernbuffer[0] << 8) | kernbuffer[1];
+
+			ret = sisusb_write_memio_word(sisusb,
+							SISUSB_TYPE_MEM,
+							addr,
+							swap16);
+
+			if (!ret)
+				(*bytes_written) += 2;
+
+			return ret;
+
+		case 3:
+			if (userbuffer) {
+				if (copy_from_user(&buf, userbuffer, 3))
+					return -EFAULT;
+
+				swap32 = (buf[0] << 16) |
+					 (buf[1] <<  8) |
+					 buf[2];
+			} else
+				swap32 = (kernbuffer[0] << 16) |
+					 (kernbuffer[1] <<  8) |
+					 kernbuffer[2];
+
+			ret = sisusb_write_memio_24bit(sisusb,
+							SISUSB_TYPE_MEM,
+							addr,
+							swap32);
+
+			if (!ret)
+				(*bytes_written) += 3;
+
+			return ret;
+
+		case 4:
+			if (userbuffer) {
+				if (get_user(swap32, (u32 __user *)userbuffer))
+					return -EFAULT;
+			} else
+				swap32 = (kernbuffer[0] << 24) |
+					 (kernbuffer[1] << 16) |
+					 (kernbuffer[2] <<  8) |
+					 kernbuffer[3];
+
+			ret = sisusb_write_memio_long(sisusb,
+							SISUSB_TYPE_MEM,
+							addr,
+							swap32);
+			if (!ret)
+				(*bytes_written) += 4;
+
+			return ret;
+
+		default:
+			if ((length & ~3) > 0x10000) {
+
+			   packet.header  = 0x001f;
+			   packet.address = 0x000001d4;
+			   packet.data    = addr;
+			   ret = sisusb_send_bridge_packet(sisusb, 10,
+								&packet, 0);
+			   packet.header  = 0x001f;
+			   packet.address = 0x000001d0;
+			   packet.data    = (length & ~3);
+			   ret |= sisusb_send_bridge_packet(sisusb, 10,
+								&packet, 0);
+			   packet.header  = 0x001f;
+			   packet.address = 0x000001c0;
+			   packet.data    = flag | 0x16;
+			   ret |= sisusb_send_bridge_packet(sisusb, 10,
+								&packet, 0);
+			   if (userbuffer) {
+				ret |= sisusb_send_bulk_msg(sisusb,
+							SISUSB_EP_GFX_LBULK_OUT,
+							(length & ~3),
+							NULL, userbuffer, 0,
+							bytes_written, 0, 1);
+				userbuffer += (*bytes_written);
+			   } else if (fromkern) {
+				ret |= sisusb_send_bulk_msg(sisusb,
+							SISUSB_EP_GFX_LBULK_OUT,
+							(length & ~3),
+							kernbuffer, NULL, 0,
+							bytes_written, 0, 1);
+				kernbuffer += (*bytes_written);
+			   } else {
+			ret |= sisusb_send_bulk_msg(sisusb,
+							SISUSB_EP_GFX_LBULK_OUT,
+							(length & ~3),
+							NULL, NULL, index,
+							bytes_written, 0, 1);
+				kernbuffer += ((*bytes_written) &
+						(sisusb->obufsize-1));
+			   }
+
+			} else {
+
+			   packet.header  = 0x001f;
+			   packet.address = 0x00000194;
+			   packet.data    = addr;
+			   ret = sisusb_send_bridge_packet(sisusb, 10,
+			   					&packet, 0);
+			   packet.header  = 0x001f;
+			   packet.address = 0x00000190;
+			   packet.data    = (length & ~3);
+			   ret |= sisusb_send_bridge_packet(sisusb, 10,
+			   					&packet, 0);
+			   if (sisusb->flagb0 != 0x16) {
+				packet.header  = 0x001f;
+				packet.address = 0x00000180;
+				packet.data    = flag | 0x16;
+				ret |= sisusb_send_bridge_packet(sisusb, 10,
+								&packet, 0);
+				sisusb->flagb0 = 0x16;
+			   }
+			   if (userbuffer) {
+				ret |= sisusb_send_bulk_msg(sisusb,
+							SISUSB_EP_GFX_BULK_OUT,
+							(length & ~3),
+							NULL, userbuffer, 0,
+							bytes_written, 0, 1);
+				userbuffer += (*bytes_written);
+			   } else if (fromkern) {
+				ret |= sisusb_send_bulk_msg(sisusb,
+							SISUSB_EP_GFX_BULK_OUT,
+							(length & ~3),
+							kernbuffer, NULL, 0,
+							bytes_written, 0, 1);
+				kernbuffer += (*bytes_written);
+			   } else {
+				ret |= sisusb_send_bulk_msg(sisusb,
+							SISUSB_EP_GFX_BULK_OUT,
+							(length & ~3),
+							NULL, NULL, index,
+							bytes_written, 0, 1);
+				kernbuffer += ((*bytes_written) &
+						(sisusb->obufsize-1));
+			   }
+			}
+			if (ret) {
+				msgcount++;
+				if (msgcount < 500)
+					printk(KERN_ERR
+						"sisusbvga[%d]: Wrote %Zd of "
+						"%d bytes, error %d\n",
+						sisusb->minor, *bytes_written,
+						length, ret);
+				else if (msgcount == 500)
+					printk(KERN_ERR
+						"sisusbvga[%d]: Too many errors"
+						", logging stopped\n",
+						sisusb->minor);
+			}
+			addr += (*bytes_written);
+			length -= (*bytes_written);
+	    }
+
+	    if (ret)
+	    	break;
+
+	}
+
+	return ret ? -EIO : 0;
+}
+
+static int sisusb_read_memio_byte(struct sisusb_usb_data *sisusb, int type,
+							u32 addr, u8 *data)
+{
+	struct sisusb_packet packet;
+	int ret;
+
+	CLEARPACKET(&packet);
+	packet.header  = (1 << (addr & 3)) | (type << 6);
+	packet.address = addr & ~3;
+	ret = sisusb_send_packet(sisusb, 6, &packet);
+	*data = (u8)(packet.data >> ((addr & 3) << 3));
+	return ret;
+}
+
+static int sisusb_read_memio_word(struct sisusb_usb_data *sisusb, int type,
+							u32 addr, u16 *data)
+{
+	struct sisusb_packet packet;
+	int ret = 0;
+
+	CLEARPACKET(&packet);
+
+	packet.address = addr & ~3;
+
+	switch (addr & 3) {
+		case 0:
+			packet.header = (type << 6) | 0x0003;
+			ret = sisusb_send_packet(sisusb, 6, &packet);
+			*data = (u16)(packet.data);
+			break;
+		case 1:
+			packet.header = (type << 6) | 0x0006;
+			ret = sisusb_send_packet(sisusb, 6, &packet);
+			*data = (u16)(packet.data >> 8);
+			break;
+		case 2:
+			packet.header = (type << 6) | 0x000c;
+			ret = sisusb_send_packet(sisusb, 6, &packet);
+			*data = (u16)(packet.data >> 16);
+			break;
+		case 3:
+			packet.header = (type << 6) | 0x0008;
+			ret = sisusb_send_packet(sisusb, 6, &packet);
+			*data = (u16)(packet.data >> 24);
+			packet.header = (type << 6) | 0x0001;
+			packet.address = (addr & ~3) + 4;
+			ret |= sisusb_send_packet(sisusb, 6, &packet);
+			*data |= (u16)(packet.data << 8);
+	}
+
+	return ret;
+}
+
+static int sisusb_read_memio_24bit(struct sisusb_usb_data *sisusb, int type,
+							u32 addr, u32 *data)
+{
+	struct sisusb_packet packet;
+	int ret = 0;
+
+	packet.address = addr & ~3;
+
+	switch (addr & 3) {
+		case 0:
+			packet.header  = (type << 6) | 0x0007;
+			ret = sisusb_send_packet(sisusb, 6, &packet);
+			*data = packet.data & 0x00ffffff;
+			break;
+		case 1:
+			packet.header  = (type << 6) | 0x000e;
+			ret = sisusb_send_packet(sisusb, 6, &packet);
+			*data = packet.data >> 8;
+			break;
+		case 2:
+			packet.header  = (type << 6) | 0x000c;
+			ret = sisusb_send_packet(sisusb, 6, &packet);
+			*data = packet.data >> 16;
+			packet.header  = (type << 6) | 0x0001;
+			packet.address = (addr & ~3) + 4;
+			ret |= sisusb_send_packet(sisusb, 6, &packet);
+			*data |= ((packet.data & 0xff) << 16);
+			break;
+		case 3:
+			packet.header  = (type << 6) | 0x0008;
+			ret = sisusb_send_packet(sisusb, 6, &packet);
+			*data = packet.data >> 24;
+			packet.header  = (type << 6) | 0x0003;
+			packet.address = (addr & ~3) + 4;
+			ret |= sisusb_send_packet(sisusb, 6, &packet);
+			*data |= ((packet.data & 0xffff) << 8);
+	}
+
+	return ret;
+}
+
+static int sisusb_read_memio_long(struct sisusb_usb_data *sisusb, int type,
+							u32 addr, u32 *data)
+{
+	struct sisusb_packet packet;
+	int ret = 0;
+
+	packet.address = addr & ~3;
+
+	switch (addr & 3) {
+		case 0:
+			packet.header  = (type << 6) | 0x000f;
+			ret = sisusb_send_packet(sisusb, 6, &packet);
+			*data = packet.data;
+			break;
+		case 1:
+			packet.header  = (type << 6) | 0x000e;
+			ret = sisusb_send_packet(sisusb, 6, &packet);
+			*data = packet.data >> 8;
+			packet.header  = (type << 6) | 0x0001;
+			packet.address = (addr & ~3) + 4;
+			ret |= sisusb_send_packet(sisusb, 6, &packet);
+			*data |= (packet.data << 24);
+			break;
+		case 2:
+			packet.header  = (type << 6) | 0x000c;
+			ret = sisusb_send_packet(sisusb, 6, &packet);
+			*data = packet.data >> 16;
+			packet.header  = (type << 6) | 0x0003;
+			packet.address = (addr & ~3) + 4;
+			ret |= sisusb_send_packet(sisusb, 6, &packet);
+			*data |= (packet.data << 16);
+			break;
+		case 3:
+			packet.header  = (type << 6) | 0x0008;
+			ret = sisusb_send_packet(sisusb, 6, &packet);
+			*data = packet.data >> 24;
+			packet.header  = (type << 6) | 0x0007;
+			packet.address = (addr & ~3) + 4;
+			ret |= sisusb_send_packet(sisusb, 6, &packet);
+			*data |= (packet.data << 8);
+	}
+
+	return ret;
+}
+
+static int sisusb_read_mem_bulk(struct sisusb_usb_data *sisusb, u32 addr,
+				char *kernbuffer, int length,
+				char __user *userbuffer, ssize_t *bytes_read)
+{
+	int ret = 0;
+	char buf[4];
+	u16 swap16;
+	u32 swap32;
+
+	(*bytes_read = 0);
+
+	length &= 0x00ffffff;
+
+	while (length) {
+
+	    switch (length) {
+
+		case 0:
+			return ret;
+
+		case 1:
+
+			ret |= sisusb_read_memio_byte(sisusb, SISUSB_TYPE_MEM,
+								addr, &buf[0]);
+			if (!ret) {
+				(*bytes_read)++;
+				if (userbuffer) {
+					if (put_user(buf[0],
+						(u8 __user *)userbuffer)) {
+						return -EFAULT;
+					}
+				} else {
+					kernbuffer[0] = buf[0];
+				}
+			}
+			return ret;
+
+		case 2:
+			ret |= sisusb_read_memio_word(sisusb, SISUSB_TYPE_MEM,
+								addr, &swap16);
+			if (!ret) {
+				(*bytes_read) += 2;
+				if (userbuffer) {
+					if (put_user(swap16,
+						(u16 __user *)userbuffer))
+						return -EFAULT;
+				} else {
+					kernbuffer[0] = swap16 >> 8;
+					kernbuffer[1] = swap16 & 0xff;
+				}
+			}
+			return ret;
+
+		case 3:
+			ret |= sisusb_read_memio_24bit(sisusb, SISUSB_TYPE_MEM,
+								addr, &swap32);
+			if (!ret) {
+				(*bytes_read) += 3;
+				buf[0] = (swap32 >> 16) & 0xff;
+				buf[1] = (swap32 >> 8) & 0xff;
+				buf[2] = swap32 & 0xff;
+				if (userbuffer) {
+					if (copy_to_user(userbuffer, &buf[0], 3))
+						return -EFAULT;
+				} else {
+					kernbuffer[0] = buf[0];
+					kernbuffer[1] = buf[1];
+					kernbuffer[2] = buf[2];
+				}
+			}
+			return ret;
+
+		default:
+			ret |= sisusb_read_memio_long(sisusb, SISUSB_TYPE_MEM,
+								addr, &swap32);
+			if (!ret) {
+				(*bytes_read) += 4;
+				if (userbuffer) {
+					if (put_user(swap32,
+						(u32 __user *)userbuffer))
+						return -EFAULT;
+
+					userbuffer += 4;
+				} else {
+					kernbuffer[0] = (swap32 >> 24) & 0xff;
+					kernbuffer[1] = (swap32 >> 16) & 0xff;
+					kernbuffer[2] = (swap32 >> 8) & 0xff;
+					kernbuffer[3] = swap32 & 0xff;
+					kernbuffer += 4;
+				}
+				addr += 4;
+				length -= 4;
+			}
+#if 0		/* That does not work, as EP 2 is an OUT EP! */
+		default:
+			CLEARPACKET(&packet);
+			packet.header  = 0x001f;
+			packet.address = 0x000001a0;
+			packet.data    = 0x00000006;
+			ret |= sisusb_send_bridge_packet(sisusb, 10,
+								&packet, 0);
+			packet.header  = 0x001f;
+			packet.address = 0x000001b0;
+			packet.data    = (length & ~3) | 0x40000000;
+			ret |= sisusb_send_bridge_packet(sisusb, 10,
+								&packet, 0);
+			packet.header  = 0x001f;
+			packet.address = 0x000001b4;
+			packet.data    = addr;
+			ret |= sisusb_send_bridge_packet(sisusb, 10,
+								&packet, 0);
+			packet.header  = 0x001f;
+			packet.address = 0x000001a4;
+			packet.data    = 0x00000001;
+			ret |= sisusb_send_bridge_packet(sisusb, 10,
+								&packet, 0);
+			if (userbuffer) {
+				ret |= sisusb_recv_bulk_msg(sisusb,
+							SISUSB_EP_GFX_BULK_IN,
+							(length & ~3),
+							NULL, userbuffer,
+							bytes_read, 0);
+				if (!ret) userbuffer += (*bytes_read);
+			} else {
+				ret |= sisusb_recv_bulk_msg(sisusb,
+							SISUSB_EP_GFX_BULK_IN,
+							(length & ~3),
+							kernbuffer, NULL,
+							bytes_read, 0);
+				if (!ret) kernbuffer += (*bytes_read);
+			}
+			addr += (*bytes_read);
+			length -= (*bytes_read);
+#endif
+	    }
+
+	    if (ret)
+	    	break;
+	}
+
+	return ret;
+}
+
+/* High level: Gfx (indexed) register access */
+
+static int
+sisusb_setidxreg(struct sisusb_usb_data *sisusb, int port, u8 index, u8 data)
+{
+	int ret;
+	ret = sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port, index);
+	ret |= sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, data);
+	return ret;
+}
+
+static int
+sisusb_getidxreg(struct sisusb_usb_data *sisusb, int port, u8 index, u8 *data)
+{
+	int ret;
+	ret = sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port, index);
+	ret |= sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, data);
+	return ret;
+}
+
+static int
+sisusb_setidxregandor(struct sisusb_usb_data *sisusb, int port, u8 idx,
+							u8 myand, u8 myor)
+{
+	int ret;
+	u8 tmp;
+
+	ret = sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port, idx);
+	ret |= sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, &tmp);
+	tmp &= myand;
+	tmp |= myor;
+	ret |= sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, tmp);
+	return ret;
+}
+
+static int
+sisusb_setidxregmask(struct sisusb_usb_data *sisusb, int port, u8 idx,
+							u8 data, u8 mask)
+{
+	int ret;
+	u8 tmp;
+	ret = sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port, idx);
+	ret |= sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, &tmp);
+	tmp &= ~(mask);
+	tmp |= (data & mask);
+	ret |= sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, tmp);
+	return ret;
+}
+
+static int
+sisusb_setidxregor(struct sisusb_usb_data *sisusb, int port, u8 index, u8 myor)
+{
+	return(sisusb_setidxregandor(sisusb, port, index, 0xff, myor));
+}
+
+static int
+sisusb_setidxregand(struct sisusb_usb_data *sisusb, int port, u8 idx, u8 myand)
+{
+	return(sisusb_setidxregandor(sisusb, port, idx, myand, 0x00));
+}
+
+/* access pci config registers (reg numbers 0, 4, 8, etc) */
+
+static int
+sisusb_write_pci_config(struct sisusb_usb_data *sisusb, int regnum, u32 data)
+{
+	struct sisusb_packet packet;
+	int ret;
+
+	packet.header = 0x008f;
+	packet.address = regnum | 0x10000;
+	packet.data = data;
+	ret = sisusb_send_packet(sisusb, 10, &packet);
+	return ret;
+}
+
+static int
+sisusb_read_pci_config(struct sisusb_usb_data *sisusb, int regnum, u32 *data)
+{
+	struct sisusb_packet packet;
+	int ret;
+
+	packet.header = 0x008f;
+	packet.address = (u32)regnum | 0x10000;
+	ret = sisusb_send_packet(sisusb, 6, &packet);
+	*data = packet.data;
+	return ret;
+}
+
+/* Clear video RAM */
+
+static int
+sisusb_clear_vram(struct sisusb_usb_data *sisusb, u32 address, int length)
+{
+	int ret, i;
+	ssize_t j;
+
+	if (address < sisusb->vrambase)
+		return 1;
+
+	if (address >= sisusb->vrambase + sisusb->vramsize)
+		return 1;
+
+	if (address + length > sisusb->vrambase + sisusb->vramsize)
+		length = sisusb->vrambase + sisusb->vramsize - address;
+
+	if (length <= 0)
+		return 0;
+
+	/* allocate free buffer/urb and clear the buffer */
+	if ((i = sisusb_alloc_outbuf(sisusb)) < 0)
+		return -EBUSY;
+
+	memset(sisusb->obuf[i], 0, sisusb->obufsize);
+
+	/* We can write a length > buffer size here. The buffer
+	 * data will simply be re-used (like a ring-buffer).
+	 */
+	ret = sisusb_write_mem_bulk(sisusb, address, NULL, length, NULL, i, &j);
+
+	/* Free the buffer/urb */
+	sisusb_free_outbuf(sisusb, i);
+
+	return ret;
+}
+
+/* Initialize the graphics core (return 0 on success)
+ * This resets the graphics hardware and puts it into
+ * a defined mode (640x480@60Hz)
+ */
+
+#define GETREG(r,d)     sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO, r, d)
+#define SETREG(r,d)	sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, r, d)
+#define SETIREG(r,i,d)	sisusb_setidxreg(sisusb, r, i, d)
+#define GETIREG(r,i,d)  sisusb_getidxreg(sisusb, r, i, d)
+#define SETIREGOR(r,i,o)	sisusb_setidxregor(sisusb, r, i, o)
+#define SETIREGAND(r,i,a)	sisusb_setidxregand(sisusb, r, i, a)
+#define SETIREGANDOR(r,i,a,o)	sisusb_setidxregandor(sisusb, r, i, a, o)
+#define READL(a,d)	sisusb_read_memio_long(sisusb, SISUSB_TYPE_MEM, a, d)
+#define WRITEL(a,d) 	sisusb_write_memio_long(sisusb, SISUSB_TYPE_MEM, a, d)
+#define READB(a,d)	sisusb_read_memio_byte(sisusb, SISUSB_TYPE_MEM, a, d)
+#define WRITEB(a,d) 	sisusb_write_memio_byte(sisusb, SISUSB_TYPE_MEM, a, d)
+
+static int
+sisusb_triggersr16(struct sisusb_usb_data *sisusb, u8 ramtype)
+{
+	int ret;
+	u8 tmp8;
+
+	ret = GETIREG(SISSR, 0x16, &tmp8);
+	if (ramtype <= 1) {
+		tmp8 &= 0x3f;
+		ret |= SETIREG(SISSR, 0x16, tmp8);
+		tmp8 |= 0x80;
+		ret |= SETIREG(SISSR, 0x16, tmp8);
+	} else {
+		tmp8 |= 0xc0;
+		ret |= SETIREG(SISSR, 0x16, tmp8);
+		tmp8 &= 0x0f;
+		ret |= SETIREG(SISSR, 0x16, tmp8);
+		tmp8 |= 0x80;
+		ret |= SETIREG(SISSR, 0x16, tmp8);
+		tmp8 &= 0x0f;
+		ret |= SETIREG(SISSR, 0x16, tmp8);
+		tmp8 |= 0xd0;
+		ret |= SETIREG(SISSR, 0x16, tmp8);
+		tmp8 &= 0x0f;
+		ret |= SETIREG(SISSR, 0x16, tmp8);
+		tmp8 |= 0xa0;
+		ret |= SETIREG(SISSR, 0x16, tmp8);
+	}
+	return ret;
+}
+
+static int
+sisusb_getbuswidth(struct sisusb_usb_data *sisusb, int *bw, int *chab)
+{
+	int ret;
+	u8  ramtype, done = 0;
+	u32 t0, t1, t2, t3;
+	u32 ramptr = SISUSB_PCI_MEMBASE;
+
+	ret = GETIREG(SISSR, 0x3a, &ramtype);
+	ramtype &= 3;
+
+	ret |= SETIREG(SISSR, 0x13, 0x00);
+
+	if (ramtype <= 1) {
+		ret |= SETIREG(SISSR, 0x14, 0x12);
+		ret |= SETIREGAND(SISSR, 0x15, 0xef);
+	} else {
+		ret |= SETIREG(SISSR, 0x14, 0x02);
+	}
+
+	ret |= sisusb_triggersr16(sisusb, ramtype);
+	ret |= WRITEL(ramptr +  0, 0x01234567);
+	ret |= WRITEL(ramptr +  4, 0x456789ab);
+	ret |= WRITEL(ramptr +  8, 0x89abcdef);
+	ret |= WRITEL(ramptr + 12, 0xcdef0123);
+	ret |= WRITEL(ramptr + 16, 0x55555555);
+	ret |= WRITEL(ramptr + 20, 0x55555555);
+	ret |= WRITEL(ramptr + 24, 0xffffffff);
+	ret |= WRITEL(ramptr + 28, 0xffffffff);
+	ret |= READL(ramptr +  0, &t0);
+	ret |= READL(ramptr +  4, &t1);
+	ret |= READL(ramptr +  8, &t2);
+	ret |= READL(ramptr + 12, &t3);
+
+	if (ramtype <= 1) {
+
+		*chab = 0; *bw = 64;
+
+		if ((t3 != 0xcdef0123) || (t2 != 0x89abcdef)) {
+			if ((t1 == 0x456789ab) && (t0 == 0x01234567)) {
+				*chab = 0; *bw = 64;
+				ret |= SETIREGAND(SISSR, 0x14, 0xfd);
+			}
+		}
+		if ((t1 != 0x456789ab) || (t0 != 0x01234567)) {
+			*chab = 1; *bw = 64;
+			ret |= SETIREGANDOR(SISSR, 0x14, 0xfc,0x01);
+
+			ret |= sisusb_triggersr16(sisusb, ramtype);
+			ret |= WRITEL(ramptr +  0, 0x89abcdef);
+			ret |= WRITEL(ramptr +  4, 0xcdef0123);
+			ret |= WRITEL(ramptr +  8, 0x55555555);
+			ret |= WRITEL(ramptr + 12, 0x55555555);
+			ret |= WRITEL(ramptr + 16, 0xaaaaaaaa);
+			ret |= WRITEL(ramptr + 20, 0xaaaaaaaa);
+			ret |= READL(ramptr +  4, &t1);
+
+			if (t1 != 0xcdef0123) {
+				*bw = 32;
+				ret |= SETIREGOR(SISSR, 0x15, 0x10);
+			}
+		}
+
+	} else {
+
+		*chab = 0; *bw = 64;	/* default: cha, bw = 64 */
+
+		done = 0;
+
+		if (t1 == 0x456789ab) {
+			if (t0 == 0x01234567) {
+				*chab = 0; *bw = 64;
+				done = 1;
+			}
+		} else {
+			if (t0 == 0x01234567) {
+				*chab = 0; *bw = 32;
+				ret |= SETIREG(SISSR, 0x14, 0x00);
+				done = 1;
+			}
+		}
+
+		if (!done) {
+			ret |= SETIREG(SISSR, 0x14, 0x03);
+			ret |= sisusb_triggersr16(sisusb, ramtype);
+
+			ret |= WRITEL(ramptr +  0, 0x01234567);
+			ret |= WRITEL(ramptr +  4, 0x456789ab);
+			ret |= WRITEL(ramptr +  8, 0x89abcdef);
+			ret |= WRITEL(ramptr + 12, 0xcdef0123);
+			ret |= WRITEL(ramptr + 16, 0x55555555);
+			ret |= WRITEL(ramptr + 20, 0x55555555);
+			ret |= WRITEL(ramptr + 24, 0xffffffff);
+			ret |= WRITEL(ramptr + 28, 0xffffffff);
+			ret |= READL(ramptr +  0, &t0);
+			ret |= READL(ramptr +  4, &t1);
+
+			if (t1 == 0x456789ab) {
+				if (t0 == 0x01234567) {
+					*chab = 1; *bw = 64;
+					return ret;
+				} /* else error */
+			} else {
+				if (t0 == 0x01234567) {
+					*chab = 1; *bw = 32;
+					ret |= SETIREG(SISSR, 0x14, 0x01);
+				} /* else error */
+			}
+		}
+	}
+	return ret;
+}
+
+static int
+sisusb_verify_mclk(struct sisusb_usb_data *sisusb)
+{
+	int ret = 0;
+	u32 ramptr = SISUSB_PCI_MEMBASE;
+	u8 tmp1, tmp2, i, j;
+
+	ret |= WRITEB(ramptr, 0xaa);
+	ret |= WRITEB(ramptr + 16, 0x55);
+	ret |= READB(ramptr, &tmp1);
+	ret |= READB(ramptr + 16, &tmp2);
+	if ((tmp1 != 0xaa) || (tmp2 != 0x55)) {
+		for (i = 0, j = 16; i < 2; i++, j += 16) {
+			ret |= GETIREG(SISSR, 0x21, &tmp1);
+			ret |= SETIREGAND(SISSR, 0x21, (tmp1 & 0xfb));
+			ret |= SETIREGOR(SISSR, 0x3c, 0x01);  /* not on 330 */
+			ret |= SETIREGAND(SISSR, 0x3c, 0xfe); /* not on 330 */
+			ret |= SETIREG(SISSR, 0x21, tmp1);
+			ret |= WRITEB(ramptr + 16 + j, j);
+			ret |= READB(ramptr + 16 + j, &tmp1);
+			if (tmp1 == j) {
+				ret |= WRITEB(ramptr + j, j);
+				break;
+			}
+		}
+	}
+	return ret;
+}
+
+static int
+sisusb_set_rank(struct sisusb_usb_data *sisusb, int *iret, int index,
+			u8 rankno, u8 chab, const u8 dramtype[][5],
+			int bw)
+{
+	int ret = 0, ranksize;
+	u8 tmp;
+
+	*iret = 0;
+
+	if ((rankno == 2) && (dramtype[index][0] == 2))
+		return ret;
+
+	ranksize = dramtype[index][3] / 2 * bw / 32;
+
+	if ((ranksize * rankno) > 128)
+		return ret;
+
+	tmp = 0;
+	while ((ranksize >>= 1) > 0) tmp += 0x10;
+	tmp |= ((rankno - 1) << 2);
+	tmp |= ((bw / 64) & 0x02);
+	tmp |= (chab & 0x01);
+
+	ret = SETIREG(SISSR, 0x14, tmp);
+	ret |= sisusb_triggersr16(sisusb, 0); /* sic! */
+
+	*iret = 1;
+
+	return ret;
+}
+
+static int
+sisusb_check_rbc(struct sisusb_usb_data *sisusb, int *iret, u32 inc, int testn)
+{
+	int ret = 0, i;
+	u32 j, tmp;
+
+	*iret = 0;
+
+	for (i = 0, j = 0; i < testn; i++) {
+		ret |= WRITEL(sisusb->vrambase + j, j);
+		j += inc;
+	}
+
+	for (i = 0, j = 0; i < testn; i++) {
+		ret |= READL(sisusb->vrambase + j, &tmp);
+		if (tmp != j) return ret;
+		j += inc;
+	}
+
+	*iret = 1;
+	return ret;
+}
+
+static int
+sisusb_check_ranks(struct sisusb_usb_data *sisusb, int *iret, int rankno,
+					int idx, int bw, const u8 rtype[][5])
+{
+	int ret = 0, i, i2ret;
+	u32 inc;
+
+	*iret = 0;
+
+	for (i = rankno; i >= 1; i--) {
+		inc = 1 << (rtype[idx][2] +
+			    rtype[idx][1] +
+			    rtype[idx][0] +
+			    bw / 64 + i);
+		ret |= sisusb_check_rbc(sisusb, &i2ret, inc, 2);
+		if (!i2ret)
+			return ret;
+	}
+
+	inc = 1 << (rtype[idx][2] + bw / 64 + 2);
+	ret |= sisusb_check_rbc(sisusb, &i2ret, inc, 4);
+	if (!i2ret)
+		return ret;
+
+	inc = 1 << (10 + bw / 64);
+	ret |= sisusb_check_rbc(sisusb, &i2ret, inc, 2);
+	if (!i2ret)
+		return ret;
+
+	*iret = 1;
+	return ret;
+}
+
+static int
+sisusb_get_sdram_size(struct sisusb_usb_data *sisusb, int *iret, int bw,
+								int chab)
+{
+	int ret = 0, i2ret = 0, i, j;
+	static const u8 sdramtype[13][5] = {
+		{ 2, 12, 9, 64, 0x35 },
+		{ 1, 13, 9, 64, 0x44 },
+		{ 2, 12, 8, 32, 0x31 },
+		{ 2, 11, 9, 32, 0x25 },
+		{ 1, 12, 9, 32, 0x34 },
+		{ 1, 13, 8, 32, 0x40 },
+		{ 2, 11, 8, 16, 0x21 },
+		{ 1, 12, 8, 16, 0x30 },
+		{ 1, 11, 9, 16, 0x24 },
+		{ 1, 11, 8,  8, 0x20 },
+		{ 2,  9, 8,  4, 0x01 },
+		{ 1, 10, 8,  4, 0x10 },
+		{ 1,  9, 8,  2, 0x00 }
+	};
+
+	*iret = 1; /* error */
+
+	for (i = 0; i < 13; i++) {
+		ret |= SETIREGANDOR(SISSR, 0x13, 0x80, sdramtype[i][4]);
+		for (j = 2; j > 0; j--) {
+			ret |= sisusb_set_rank(sisusb, &i2ret, i, j,
+						chab, sdramtype, bw);
+			if (!i2ret)
+				continue;
+
+			ret |= sisusb_check_ranks(sisusb, &i2ret, j, i,
+						bw, sdramtype);
+			if (i2ret) {
+				*iret = 0;	/* ram size found */
+				return ret;
+			}
+		}
+	}
+
+	return ret;
+}
+
+static int
+sisusb_setup_screen(struct sisusb_usb_data *sisusb, int clrall, int drwfr)
+{
+	int ret = 0;
+	u32 address;
+	int i, length, modex, modey, bpp;
+
+	modex = 640; modey = 480; bpp = 2;
+
+	address = sisusb->vrambase;	/* Clear video ram */
+
+	if (clrall)
+		length = sisusb->vramsize;
+	else
+		length = modex * bpp * modey;
+
+	ret = sisusb_clear_vram(sisusb, address, length);
+
+	if (!ret && drwfr) {
+		for (i = 0; i < modex; i++) {
+			address = sisusb->vrambase + (i * bpp);
+			ret |= sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
+							address, 0xf100);
+			address += (modex * (modey-1) * bpp);
+			ret |= sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
+							address, 0xf100);
+		}
+		for (i = 0; i < modey; i++) {
+			address = sisusb->vrambase + ((i * modex) * bpp);
+			ret |= sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
+							address, 0xf100);
+			address += ((modex - 1) * bpp);
+			ret |= sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
+							address, 0xf100);
+		}
+	}
+
+	return ret;
+}
+
+static int
+sisusb_set_default_mode(struct sisusb_usb_data *sisusb, int touchengines)
+{
+	int ret = 0, i, j, modex, modey, bpp, du;
+	u8 sr31, cr63, tmp8;
+	static const char attrdata[] = {
+		0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,
+		0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,
+		0x01,0x00,0x00,0x00
+	};
+	static const char crtcrdata[] = {
+		0x5f,0x4f,0x50,0x82,0x54,0x80,0x0b,0x3e,
+		0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,
+		0xea,0x8c,0xdf,0x28,0x40,0xe7,0x04,0xa3,
+		0xff
+	};
+	static const char grcdata[] = {
+		0x00,0x00,0x00,0x00,0x00,0x40,0x05,0x0f,
+		0xff
+	};
+	static const char crtcdata[] = {
+		0x5f,0x4f,0x4f,0x83,0x55,0x81,0x0b,0x3e,
+		0xe9,0x8b,0xdf,0xe8,0x0c,0x00,0x00,0x05,
+		0x00
+	};
+
+	modex = 640; modey = 480; bpp = 2;
+
+	GETIREG(SISSR, 0x31, &sr31);
+	GETIREG(SISCR, 0x63, &cr63);
+	SETIREGOR(SISSR, 0x01, 0x20);
+	SETIREG(SISCR, 0x63, cr63 & 0xbf);
+	SETIREGOR(SISCR, 0x17, 0x80);
+	SETIREGOR(SISSR, 0x1f, 0x04);
+	SETIREGAND(SISSR, 0x07, 0xfb);
+	SETIREG(SISSR, 0x00, 0x03);	/* seq */
+	SETIREG(SISSR, 0x01, 0x21);
+	SETIREG(SISSR, 0x02, 0x0f);
+	SETIREG(SISSR, 0x03, 0x00);
+	SETIREG(SISSR, 0x04, 0x0e);
+	SETREG(SISMISCW, 0x23);		/* misc */
+	for (i = 0; i <= 0x18; i++) {	/* crtc */
+		SETIREG(SISCR, i, crtcrdata[i]);
+	}
+	for (i = 0; i <= 0x13; i++) {	/* att */
+		GETREG(SISINPSTAT, &tmp8);
+		SETREG(SISAR, i);
+		SETREG(SISAR, attrdata[i]);
+	}
+	GETREG(SISINPSTAT, &tmp8);
+	SETREG(SISAR, 0x14);
+	SETREG(SISAR, 0x00);
+	GETREG(SISINPSTAT, &tmp8);
+	SETREG(SISAR, 0x20);
+	GETREG(SISINPSTAT, &tmp8);
+	for (i = 0; i <= 0x08; i++) {	/* grc */
+		SETIREG(SISGR, i, grcdata[i]);
+	}
+	SETIREGAND(SISGR, 0x05, 0xbf);
+	for (i = 0x0A; i <= 0x0E; i++) {	/* clr ext */
+		SETIREG(SISSR, i, 0x00);
+	}
+	SETIREGAND(SISSR, 0x37, 0xfe);
+	SETREG(SISMISCW, 0xef);		/* sync */
+	SETIREG(SISCR, 0x11, 0x00);	/* crtc */
+	for (j = 0x00, i = 0; i <= 7; i++, j++) {
+		SETIREG(SISCR, j, crtcdata[i]);
+	}
+	for (j = 0x10; i <= 10; i++, j++) {
+		SETIREG(SISCR, j, crtcdata[i]);
+	}
+	for (j = 0x15; i <= 12; i++, j++) {
+		SETIREG(SISCR, j, crtcdata[i]);
+	}
+	for (j = 0x0A; i <= 15; i++, j++) {
+		SETIREG(SISSR, j, crtcdata[i]);
+	}
+	SETIREG(SISSR, 0x0E, (crtcdata[16] & 0xE0));
+	SETIREGANDOR(SISCR, 0x09, 0x5f, ((crtcdata[16] & 0x01) << 5));
+	SETIREG(SISCR, 0x14, 0x4f);
+	du = (modex / 16) * (bpp * 2);	/* offset/pitch */
+	if (modex % 16) du += bpp;
+	SETIREGANDOR(SISSR, 0x0e, 0xf0, ((du >> 8) & 0x0f));
+	SETIREG(SISCR, 0x13, (du & 0xff));
+	du <<= 5;
+	tmp8 = du >> 8;
+	if (du & 0xff) tmp8++;
+	SETIREG(SISSR, 0x10, tmp8);
+	SETIREG(SISSR, 0x31, 0x00);	/* VCLK */
+	SETIREG(SISSR, 0x2b, 0x1b);
+	SETIREG(SISSR, 0x2c, 0xe1);
+	SETIREG(SISSR, 0x2d, 0x01);
+	SETIREGAND(SISSR, 0x3d, 0xfe);	/* FIFO */
+	SETIREG(SISSR, 0x08, 0xae);
+	SETIREGAND(SISSR, 0x09, 0xf0);
+	SETIREG(SISSR, 0x08, 0x34);
+	SETIREGOR(SISSR, 0x3d, 0x01);
+	SETIREGAND(SISSR, 0x1f, 0x3f);	/* mode regs */
+	SETIREGANDOR(SISSR, 0x06, 0xc0, 0x0a);
+	SETIREG(SISCR, 0x19, 0x00);
+	SETIREGAND(SISCR, 0x1a, 0xfc);
+	SETIREGAND(SISSR, 0x0f, 0xb7);
+	SETIREGAND(SISSR, 0x31, 0xfb);
+	SETIREGANDOR(SISSR, 0x21, 0x1f, 0xa0);
+	SETIREGAND(SISSR, 0x32, 0xf3);
+	SETIREGANDOR(SISSR, 0x07, 0xf8, 0x03);
+	SETIREG(SISCR, 0x52, 0x6c);
+
+	SETIREG(SISCR, 0x0d, 0x00);	/* adjust frame */
+	SETIREG(SISCR, 0x0c, 0x00);
+	SETIREG(SISSR, 0x0d, 0x00);
+	SETIREGAND(SISSR, 0x37, 0xfe);
+
+	SETIREG(SISCR, 0x32, 0x20);
+	SETIREGAND(SISSR, 0x01, 0xdf);	/* enable display */
+	SETIREG(SISCR, 0x63, (cr63 & 0xbf));
+	SETIREG(SISSR, 0x31, (sr31 & 0xfb));
+
+	if (touchengines) {
+		SETIREG(SISSR, 0x20, 0xa1);	/* enable engines */
+		SETIREGOR(SISSR, 0x1e, 0x5a);
+
+		SETIREG(SISSR, 0x26, 0x01);	/* disable cmdqueue */
+		SETIREG(SISSR, 0x27, 0x1f);
+		SETIREG(SISSR, 0x26, 0x00);
+	}
+
+	SETIREG(SISCR, 0x34, 0x44);  	/* we just set std mode #44 */
+
+	return ret;
+}
+
+static int
+sisusb_init_gfxcore(struct sisusb_usb_data *sisusb)
+{
+	int ret = 0, i, j, bw, chab, iret, retry = 3;
+	u8 tmp8, ramtype;
+	u32 tmp32;
+	static const char mclktable[] = {
+		0x3b, 0x22, 0x01, 143,
+		0x3b, 0x22, 0x01, 143,
+		0x3b, 0x22, 0x01, 143,
+		0x3b, 0x22, 0x01, 143
+	};
+	static const char eclktable[] = {
+		0x3b, 0x22, 0x01, 143,
+		0x3b, 0x22, 0x01, 143,
+		0x3b, 0x22, 0x01, 143,
+		0x3b, 0x22, 0x01, 143
+	};
+	static const char ramtypetable1[] = {
+		0x00, 0x04, 0x60, 0x60,
+		0x0f, 0x0f, 0x1f, 0x1f,
+		0xba, 0xba, 0xba, 0xba,
+		0xa9, 0xa9, 0xac, 0xac,
+		0xa0, 0xa0, 0xa0, 0xa8,
+		0x00, 0x00, 0x02, 0x02,
+		0x30, 0x30, 0x40, 0x40
+	};
+	static const char ramtypetable2[] = {
+		0x77, 0x77, 0x44, 0x44,
+		0x77, 0x77, 0x44, 0x44,
+		0x00, 0x00, 0x00, 0x00,
+		0x5b, 0x5b, 0xab, 0xab,
+		0x00, 0x00, 0xf0, 0xf8
+	};
+
+	while (retry--) {
+
+		/* Enable VGA */
+		ret = GETREG(SISVGAEN, &tmp8);
+		ret |= SETREG(SISVGAEN, (tmp8 | 0x01));
+
+		/* Enable GPU access to VRAM */
+		ret |= GETREG(SISMISCR, &tmp8);
+		ret |= SETREG(SISMISCW, (tmp8 | 0x01));
+
+		if (ret) continue;
+
+		/* Reset registers */
+		ret |= SETIREGAND(SISCR, 0x5b, 0xdf);
+		ret |= SETIREG(SISSR, 0x05, 0x86);
+		ret |= SETIREGOR(SISSR, 0x20, 0x01);
+
+		ret |= SETREG(SISMISCW, 0x67);
+
+		for (i = 0x06; i <= 0x1f; i++) {
+			ret |= SETIREG(SISSR, i, 0x00);
+		}
+		for (i = 0x21; i <= 0x27; i++) {
+			ret |= SETIREG(SISSR, i, 0x00);
+		}
+		for (i = 0x31; i <= 0x3d; i++) {
+			ret |= SETIREG(SISSR, i, 0x00);
+		}
+		for (i = 0x12; i <= 0x1b; i++) {
+			ret |= SETIREG(SISSR, i, 0x00);
+		}
+		for (i = 0x79; i <= 0x7c; i++) {
+			ret |= SETIREG(SISCR, i, 0x00);
+		}
+
+		if (ret) continue;
+
+		ret |= SETIREG(SISCR, 0x63, 0x80);
+
+		ret |= GETIREG(SISSR, 0x3a, &ramtype);
+		ramtype &= 0x03;
+
+		ret |= SETIREG(SISSR, 0x28, mclktable[ramtype * 4]);
+		ret |= SETIREG(SISSR, 0x29, mclktable[(ramtype * 4) + 1]);
+		ret |= SETIREG(SISSR, 0x2a, mclktable[(ramtype * 4) + 2]);
+
+		ret |= SETIREG(SISSR, 0x2e, eclktable[ramtype * 4]);
+		ret |= SETIREG(SISSR, 0x2f, eclktable[(ramtype * 4) + 1]);
+		ret |= SETIREG(SISSR, 0x30, eclktable[(ramtype * 4) + 2]);
+
+		ret |= SETIREG(SISSR, 0x07, 0x18);
+		ret |= SETIREG(SISSR, 0x11, 0x0f);
+
+		if (ret) continue;
+
+		for (i = 0x15, j = 0; i <= 0x1b; i++, j++) {
+			ret |= SETIREG(SISSR, i, ramtypetable1[(j*4) + ramtype]);
+		}
+		for (i = 0x40, j = 0; i <= 0x44; i++, j++) {
+			ret |= SETIREG(SISCR, i, ramtypetable2[(j*4) + ramtype]);
+		}
+
+		ret |= SETIREG(SISCR, 0x49, 0xaa);
+
+		ret |= SETIREG(SISSR, 0x1f, 0x00);
+		ret |= SETIREG(SISSR, 0x20, 0xa0);
+		ret |= SETIREG(SISSR, 0x23, 0xf6);
+		ret |= SETIREG(SISSR, 0x24, 0x0d);
+		ret |= SETIREG(SISSR, 0x25, 0x33);
+
+		ret |= SETIREG(SISSR, 0x11, 0x0f);
+
+		ret |= SETIREGOR(SISPART1, 0x2f, 0x01);
+
+		ret |= SETIREGAND(SISCAP, 0x3f, 0xef);
+
+		if (ret) continue;
+
+		ret |= SETIREG(SISPART1, 0x00, 0x00);
+
+		ret |= GETIREG(SISSR, 0x13, &tmp8);
+		tmp8 >>= 4;
+
+		ret |= SETIREG(SISPART1, 0x02, 0x00);
+		ret |= SETIREG(SISPART1, 0x2e, 0x08);
+
+		ret |= sisusb_read_pci_config(sisusb, 0x50, &tmp32);
+		tmp32 &= 0x00f00000;
+		tmp8 = (tmp32 == 0x100000) ? 0x33 : 0x03;
+		ret |= SETIREG(SISSR, 0x25, tmp8);
+		tmp8 = (tmp32 == 0x100000) ? 0xaa : 0x88;
+		ret |= SETIREG(SISCR, 0x49, tmp8);
+
+		ret |= SETIREG(SISSR, 0x27, 0x1f);
+		ret |= SETIREG(SISSR, 0x31, 0x00);
+		ret |= SETIREG(SISSR, 0x32, 0x11);
+		ret |= SETIREG(SISSR, 0x33, 0x00);
+
+		if (ret) continue;
+
+		ret |= SETIREG(SISCR, 0x83, 0x00);
+
+		ret |= sisusb_set_default_mode(sisusb, 0);
+
+		ret |= SETIREGAND(SISSR, 0x21, 0xdf);
+		ret |= SETIREGOR(SISSR, 0x01, 0x20);
+		ret |= SETIREGOR(SISSR, 0x16, 0x0f);
+
+		ret |= sisusb_triggersr16(sisusb, ramtype);
+
+		/* Disable refresh */
+		ret |= SETIREGAND(SISSR, 0x17, 0xf8);
+		ret |= SETIREGOR(SISSR, 0x19, 0x03);
+
+		ret |= sisusb_getbuswidth(sisusb, &bw, &chab);
+		ret |= sisusb_verify_mclk(sisusb);
+
+		if (ramtype <= 1) {
+			ret |= sisusb_get_sdram_size(sisusb, &iret, bw, chab);
+			if (iret) {
+				printk(KERN_ERR "sisusbvga[%d]: RAM size "
+					"detection failed, "
+					"assuming 8MB video RAM\n",
+					sisusb->minor);
+				ret |= SETIREG(SISSR,0x14,0x31);
+				/* TODO */
+			}
+		} else {
+			printk(KERN_ERR "sisusbvga[%d]: DDR RAM device found, "
+					"assuming 8MB video RAM\n",
+					sisusb->minor);
+			ret |= SETIREG(SISSR,0x14,0x31);
+			/* *** TODO *** */
+		}
+
+		/* Enable refresh */
+		ret |= SETIREG(SISSR, 0x16, ramtypetable1[4 + ramtype]);
+		ret |= SETIREG(SISSR, 0x17, ramtypetable1[8 + ramtype]);
+		ret |= SETIREG(SISSR, 0x19, ramtypetable1[16 + ramtype]);
+
+		ret |= SETIREGOR(SISSR, 0x21, 0x20);
+
+		ret |= SETIREG(SISSR, 0x22, 0xfb);
+		ret |= SETIREG(SISSR, 0x21, 0xa5);
+
+		if (ret == 0)
+			break;
+	}
+
+	return ret;
+}
+
+#undef SETREG
+#undef GETREG
+#undef SETIREG
+#undef GETIREG
+#undef SETIREGOR
+#undef SETIREGAND
+#undef SETIREGANDOR
+#undef READL
+#undef WRITEL
+
+static void
+sisusb_get_ramconfig(struct sisusb_usb_data *sisusb)
+{
+	u8 tmp8, tmp82, ramtype;
+	int bw = 0;
+	char *ramtypetext1 = NULL;
+	const char *ramtypetext2[] = {	"SDR SDRAM", "SDR SGRAM",
+					"DDR SDRAM", "DDR SGRAM" };
+	static const int busSDR[4]  = {64, 64, 128, 128};
+	static const int busDDR[4]  = {32, 32,  64,  64};
+	static const int busDDRA[4] = {64+32, 64+32 , (64+32)*2, (64+32)*2};
+
+	sisusb_getidxreg(sisusb, SISSR, 0x14, &tmp8);
+	sisusb_getidxreg(sisusb, SISSR, 0x15, &tmp82);
+	sisusb_getidxreg(sisusb, SISSR, 0x3a, &ramtype);
+	sisusb->vramsize = (1 << ((tmp8 & 0xf0) >> 4)) * 1024 * 1024;
+	ramtype &= 0x03;
+	switch ((tmp8 >> 2) & 0x03) {
+	case 0: ramtypetext1 = "1 ch/1 r";
+		if (tmp82 & 0x10) {
+			bw = 32;
+		} else {
+			bw = busSDR[(tmp8 & 0x03)];
+		}
+		break;
+	case 1: ramtypetext1 = "1 ch/2 r";
+		sisusb->vramsize <<= 1;
+		bw = busSDR[(tmp8 & 0x03)];
+		break;
+	case 2: ramtypetext1 = "asymmeric";
+		sisusb->vramsize += sisusb->vramsize/2;
+		bw = busDDRA[(tmp8 & 0x03)];
+		break;
+	case 3: ramtypetext1 = "2 channel";
+		sisusb->vramsize <<= 1;
+		bw = busDDR[(tmp8 & 0x03)];
+		break;
+	}
+
+	printk(KERN_INFO "sisusbvga[%d]: %dMB %s %s, bus width %d\n",
+			sisusb->minor, (sisusb->vramsize >> 20), ramtypetext1,
+			ramtypetext2[ramtype], bw);
+}
+
+static int
+sisusb_do_init_gfxdevice(struct sisusb_usb_data *sisusb)
+{
+	struct sisusb_packet packet;
+	int ret;
+	u32 tmp32;
+
+	/* Do some magic */
+	packet.header  = 0x001f;
+	packet.address = 0x00000324;
+	packet.data    = 0x00000004;
+	ret = sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
+
+	packet.header  = 0x001f;
+	packet.address = 0x00000364;
+	packet.data    = 0x00000004;
+	ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
+
+	packet.header  = 0x001f;
+	packet.address = 0x00000384;
+	packet.data    = 0x00000004;
+	ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
+
+	packet.header  = 0x001f;
+	packet.address = 0x00000100;
+	packet.data    = 0x00000700;
+	ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
+
+	packet.header  = 0x000f;
+	packet.address = 0x00000004;
+	ret |= sisusb_send_bridge_packet(sisusb, 6, &packet, 0);
+	packet.data |= 0x17;
+	ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
+
+	/* Init BAR 0 (VRAM) */
+	ret |= sisusb_read_pci_config(sisusb, 0x10, &tmp32);
+	ret |= sisusb_write_pci_config(sisusb, 0x10, 0xfffffff0);
+	ret |= sisusb_read_pci_config(sisusb, 0x10, &tmp32);
+	tmp32 &= 0x0f;
+	tmp32 |= SISUSB_PCI_MEMBASE;
+	ret |= sisusb_write_pci_config(sisusb, 0x10, tmp32);
+
+	/* Init BAR 1 (MMIO) */
+	ret |= sisusb_read_pci_config(sisusb, 0x14, &tmp32);
+	ret |= sisusb_write_pci_config(sisusb, 0x14, 0xfffffff0);
+	ret |= sisusb_read_pci_config(sisusb, 0x14, &tmp32);
+	tmp32 &= 0x0f;
+	tmp32 |= SISUSB_PCI_MMIOBASE;
+	ret |= sisusb_write_pci_config(sisusb, 0x14, tmp32);
+
+	/* Init BAR 2 (i/o ports) */
+	ret |= sisusb_read_pci_config(sisusb, 0x18, &tmp32);
+	ret |= sisusb_write_pci_config(sisusb, 0x18, 0xfffffff0);
+	ret |= sisusb_read_pci_config(sisusb, 0x18, &tmp32);
+	tmp32 &= 0x0f;
+	tmp32 |= SISUSB_PCI_IOPORTBASE;
+	ret |= sisusb_write_pci_config(sisusb, 0x18, tmp32);
+
+	/* Enable memory and i/o access */
+	ret |= sisusb_read_pci_config(sisusb, 0x04, &tmp32);
+	tmp32 |= 0x3;
+	ret |= sisusb_write_pci_config(sisusb, 0x04, tmp32);
+
+	if (ret == 0) {
+		/* Some further magic */
+		packet.header  = 0x001f;
+		packet.address = 0x00000050;
+		packet.data    = 0x000000ff;
+		ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
+	}
+
+	return ret;
+}
+
+/* Initialize the graphics device (return 0 on success)
+ * This initializes the net2280 as well as the PCI registers
+ * of the graphics board.
+ */
+
+static int
+sisusb_init_gfxdevice(struct sisusb_usb_data *sisusb, int initscreen)
+{
+	int ret = 0, test = 0;
+	u32 tmp32;
+
+	if (sisusb->devinit == 1) {
+		/* Read PCI BARs and see if they have been set up */
+		ret |= sisusb_read_pci_config(sisusb, 0x10, &tmp32);
+		if (ret) return ret;
+		if ((tmp32 & 0xfffffff0) == SISUSB_PCI_MEMBASE) test++;
+
+		ret |= sisusb_read_pci_config(sisusb, 0x14, &tmp32);
+		if (ret) return ret;
+		if ((tmp32 & 0xfffffff0) == SISUSB_PCI_MMIOBASE) test++;
+
+		ret |= sisusb_read_pci_config(sisusb, 0x18, &tmp32);
+		if (ret) return ret;
+		if ((tmp32 & 0xfffffff0) == SISUSB_PCI_IOPORTBASE) test++;
+	}
+
+	/* No? So reset the device */
+	if ((sisusb->devinit == 0) || (test != 3)) {
+
+		ret |= sisusb_do_init_gfxdevice(sisusb);
+
+		if (ret == 0)
+			sisusb->devinit = 1;
+
+	}
+
+	if (sisusb->devinit) {
+		/* Initialize the graphics core */
+		if (sisusb_init_gfxcore(sisusb) == 0) {
+			sisusb->gfxinit = 1;
+			sisusb_get_ramconfig(sisusb);
+			ret |= sisusb_set_default_mode(sisusb, 1);
+			ret |= sisusb_setup_screen(sisusb, 1, initscreen);
+		}
+	}
+
+	return ret;
+}
+
+/* fops */
+
+static int
+sisusb_open(struct inode *inode, struct file *file)
+{
+	struct sisusb_usb_data *sisusb;
+	struct usb_interface *interface;
+	int subminor = iminor(inode);
+
+	down(&disconnect_sem);
+
+	if (!(interface = usb_find_interface(&sisusb_driver, subminor))) {
+		printk(KERN_ERR "sisusb[%d]: Failed to find interface\n",
+				subminor);
+		up(&disconnect_sem);
+		return -ENODEV;
+	}
+
+	if (!(sisusb = usb_get_intfdata(interface))) {
+		up(&disconnect_sem);
+		return -ENODEV;
+	}
+
+	down(&sisusb->lock);
+
+	if (!sisusb->present || !sisusb->ready) {
+		up(&sisusb->lock);
+		up(&disconnect_sem);
+		return -ENODEV;
+	}
+
+	if (sisusb->isopen) {
+		up(&sisusb->lock);
+		up(&disconnect_sem);
+		return -EBUSY;
+	}
+
+	if (!sisusb->devinit) {
+		if (sisusb->sisusb_dev->speed == USB_SPEED_HIGH) {
+			if (sisusb_init_gfxdevice(sisusb, 0)) {
+				up(&sisusb->lock);
+				up(&disconnect_sem);
+				printk(KERN_ERR
+					"sisusbvga[%d]: Failed to initialize "
+					"device\n",
+					sisusb->minor);
+				return -EIO;
+			}
+		} else {
+			up(&sisusb->lock);
+			up(&disconnect_sem);
+			printk(KERN_ERR
+				"sisusbvga[%d]: Device not attached to "
+				"USB 2.0 hub\n",
+				sisusb->minor);
+			return -EIO;
+		}
+	}
+
+	/* increment usage count for the device */
+	kref_get(&sisusb->kref);
+
+	sisusb->isopen = 1;
+
+	file->private_data = sisusb;
+
+	up(&sisusb->lock);
+
+	up(&disconnect_sem);
+
+	printk(KERN_DEBUG "sisusbvga[%d]: opened", sisusb->minor);
+
+	return 0;
+}
+
+static void
+sisusb_delete(struct kref *kref)
+{
+	struct sisusb_usb_data *sisusb = to_sisusb_dev(kref);
+
+	if (!sisusb)
+		return;
+
+	if (sisusb->sisusb_dev)
+		usb_put_dev(sisusb->sisusb_dev);
+
+	sisusb->sisusb_dev = NULL;
+	sisusb_free_buffers(sisusb);
+	sisusb_free_urbs(sisusb);
+	kfree(sisusb);
+}
+
+static int
+sisusb_release(struct inode *inode, struct file *file)
+{
+	struct sisusb_usb_data *sisusb;
+	int myminor;
+
+	down(&disconnect_sem);
+
+	if (!(sisusb = (struct sisusb_usb_data *)file->private_data)) {
+		up(&disconnect_sem);
+		return -ENODEV;
+	}
+
+	down(&sisusb->lock);
+
+	if (sisusb->present) {
+		/* Wait for all URBs to finish if device still present */
+		if (!sisusb_wait_all_out_complete(sisusb))
+			sisusb_kill_all_busy(sisusb);
+	}
+
+	myminor = sisusb->minor;
+
+	sisusb->isopen = 0;
+	file->private_data = NULL;
+
+	up(&sisusb->lock);
+
+	/* decrement the usage count on our device */
+	kref_put(&sisusb->kref, sisusb_delete);
+
+	up(&disconnect_sem);
+
+	printk(KERN_DEBUG "sisusbvga[%d]: released", myminor);
+
+	return 0;
+}
+
+static ssize_t
+sisusb_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
+{
+	struct sisusb_usb_data *sisusb;
+	ssize_t bytes_read = 0;
+	int errno = 0;
+	u8 buf8;
+	u16 buf16;
+	u32 buf32, address;
+
+	if (!(sisusb = (struct sisusb_usb_data *)file->private_data))
+		return -ENODEV;
+
+	down(&sisusb->lock);
+
+	/* Sanity check */
+	if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
+		up(&sisusb->lock);
+		return -ENODEV;
+	}
+
+	if ((*ppos) >= SISUSB_PCI_PSEUDO_IOPORTBASE &&
+	    (*ppos) <  SISUSB_PCI_PSEUDO_IOPORTBASE + 128) {
+
+		address = (*ppos) -
+			SISUSB_PCI_PSEUDO_IOPORTBASE +
+			SISUSB_PCI_IOPORTBASE;
+
+		/* Read i/o ports
+		 * Byte, word and long(32) can be read. As this
+		 * emulates inX instructions, the data returned is
+		 * in machine-endianness.
+		 */
+		switch (count) {
+
+			case 1:
+				if (sisusb_read_memio_byte(sisusb,
+							SISUSB_TYPE_IO,
+							address, &buf8))
+					errno = -EIO;
+				else if (put_user(buf8, (u8 __user *)buffer))
+					errno = -EFAULT;
+				else
+					bytes_read = 1;
+
+				break;
+
+			case 2:
+				if (sisusb_read_memio_word(sisusb,
+							SISUSB_TYPE_IO,
+							address, &buf16))
+					errno = -EIO;
+				else if (put_user(buf16, (u16 __user *)buffer))
+					errno = -EFAULT;
+				else
+					bytes_read = 2;
+
+				break;
+
+			case 4:
+				if (sisusb_read_memio_long(sisusb,
+							SISUSB_TYPE_IO,
+							address, &buf32))
+					errno = -EIO;
+				else if (put_user(buf32, (u32 __user *)buffer))
+					errno = -EFAULT;
+				else
+					bytes_read = 4;
+
+				break;
+
+			default:
+				errno = -EIO;
+
+		}
+
+	} else if ((*ppos) >= SISUSB_PCI_PSEUDO_MEMBASE &&
+		   (*ppos) <  SISUSB_PCI_PSEUDO_MEMBASE + sisusb->vramsize) {
+
+		address = (*ppos) -
+			SISUSB_PCI_PSEUDO_MEMBASE +
+			SISUSB_PCI_MEMBASE;
+
+		/* Read video ram
+		 * Remember: Data delivered is never endian-corrected
+		 */
+		errno = sisusb_read_mem_bulk(sisusb, address,
+					NULL, count, buffer, &bytes_read);
+
+		if (bytes_read)
+			errno = bytes_read;
+
+	} else  if ((*ppos) >= SISUSB_PCI_PSEUDO_MMIOBASE &&
+		    (*ppos) <  SISUSB_PCI_PSEUDO_MMIOBASE + SISUSB_PCI_MMIOSIZE) {
+
+		address = (*ppos) -
+			SISUSB_PCI_PSEUDO_MMIOBASE +
+			SISUSB_PCI_MMIOBASE;
+
+		/* Read MMIO
+		 * Remember: Data delivered is never endian-corrected
+		 */
+		errno = sisusb_read_mem_bulk(sisusb, address,
+					NULL, count, buffer, &bytes_read);
+
+		if (bytes_read)
+			errno = bytes_read;
+
+	} else  if ((*ppos) >= SISUSB_PCI_PSEUDO_PCIBASE &&
+		    (*ppos) <= SISUSB_PCI_PSEUDO_PCIBASE + 0x5c) {
+
+		if (count != 4) {
+			up(&sisusb->lock);
+			return -EINVAL;
+		}
+
+		address = (*ppos) - SISUSB_PCI_PSEUDO_PCIBASE;
+
+		/* Read PCI config register
+		 * Return value delivered in machine endianness.
+		 */
+		if (sisusb_read_pci_config(sisusb, address, &buf32))
+			errno = -EIO;
+		else if (put_user(buf32, (u32 __user *)buffer))
+			errno = -EFAULT;
+		else
+			bytes_read = 4;
+
+	} else {
+
+		errno = -EBADFD;
+
+	}
+
+	(*ppos) += bytes_read;
+
+	up(&sisusb->lock);
+
+	return errno ? errno : bytes_read;
+}
+
+static ssize_t
+sisusb_write(struct file *file, const char __user *buffer, size_t count,
+								loff_t *ppos)
+{
+	struct sisusb_usb_data *sisusb;
+	int errno = 0;
+	ssize_t bytes_written = 0;
+	u8 buf8;
+	u16 buf16;
+	u32 buf32, address;
+
+	if (!(sisusb = (struct sisusb_usb_data *)file->private_data))
+		return -ENODEV;
+
+	down(&sisusb->lock);
+
+	/* Sanity check */
+	if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
+		up(&sisusb->lock);
+		return -ENODEV;
+	}
+
+	if ((*ppos) >= SISUSB_PCI_PSEUDO_IOPORTBASE &&
+	    (*ppos) <  SISUSB_PCI_PSEUDO_IOPORTBASE + 128) {
+
+		address = (*ppos) -
+			SISUSB_PCI_PSEUDO_IOPORTBASE +
+			SISUSB_PCI_IOPORTBASE;
+
+		/* Write i/o ports
+		 * Byte, word and long(32) can be written. As this
+		 * emulates outX instructions, the data is expected
+		 * in machine-endianness.
+		 */
+		switch (count) {
+
+			case 1:
+				if (get_user(buf8, (u8 __user *)buffer))
+					errno = -EFAULT;
+				else if (sisusb_write_memio_byte(sisusb,
+							SISUSB_TYPE_IO,
+							address, buf8))
+					errno = -EIO;
+				else
+					bytes_written = 1;
+
+				break;
+
+			case 2:
+				if (get_user(buf16, (u16 __user *)buffer))
+					errno = -EFAULT;
+				else if (sisusb_write_memio_word(sisusb,
+							SISUSB_TYPE_IO,
+							address, buf16))
+					errno = -EIO;
+				else
+					bytes_written = 2;
+
+				break;
+
+			case 4:
+				if (get_user(buf32, (u32 __user *)buffer))
+					errno = -EFAULT;
+				else if (sisusb_write_memio_long(sisusb,
+							SISUSB_TYPE_IO,
+							address, buf32))
+					errno = -EIO;
+				else
+					bytes_written = 4;
+
+				break;
+
+			default:
+				errno = -EIO;
+		}
+
+	} else if ((*ppos) >= SISUSB_PCI_PSEUDO_MEMBASE &&
+		   (*ppos) <  SISUSB_PCI_PSEUDO_MEMBASE + sisusb->vramsize) {
+
+		address = (*ppos) -
+			SISUSB_PCI_PSEUDO_MEMBASE +
+			SISUSB_PCI_MEMBASE;
+
+		/* Write video ram.
+		 * Buffer is copied 1:1, therefore, on big-endian
+		 * machines, the data must be swapped by userland
+		 * in advance (if applicable; no swapping in 8bpp
+		 * mode or if YUV data is being transferred).
+		 */
+		errno = sisusb_write_mem_bulk(sisusb, address, NULL,
+					count, buffer, 0, &bytes_written);
+
+		if (bytes_written)
+			errno = bytes_written;
+
+	} else  if ((*ppos) >= SISUSB_PCI_PSEUDO_MMIOBASE &&
+		    (*ppos) <  SISUSB_PCI_PSEUDO_MMIOBASE + SISUSB_PCI_MMIOSIZE) {
+
+		address = (*ppos) -
+			SISUSB_PCI_PSEUDO_MMIOBASE +
+			SISUSB_PCI_MMIOBASE;
+
+		/* Write MMIO.
+		 * Buffer is copied 1:1, therefore, on big-endian
+		 * machines, the data must be swapped by userland
+		 * in advance.
+		 */
+		errno = sisusb_write_mem_bulk(sisusb, address, NULL,
+					count, buffer, 0, &bytes_written);
+
+		if (bytes_written)
+			errno = bytes_written;
+
+	} else  if ((*ppos) >= SISUSB_PCI_PSEUDO_PCIBASE &&
+		    (*ppos) <= SISUSB_PCI_PSEUDO_PCIBASE + SISUSB_PCI_PCONFSIZE) {
+
+		if (count != 4) {
+			up(&sisusb->lock);
+			return -EINVAL;
+		}
+
+		address = (*ppos) - SISUSB_PCI_PSEUDO_PCIBASE;
+
+		/* Write PCI config register.
+		 * Given value expected in machine endianness.
+		 */
+		if (get_user(buf32, (u32 __user *)buffer))
+			errno = -EFAULT;
+		else if (sisusb_write_pci_config(sisusb, address, buf32))
+			errno = -EIO;
+		else
+			bytes_written = 4;
+
+
+	} else {
+
+		/* Error */
+		errno = -EBADFD;
+
+	}
+
+	(*ppos) += bytes_written;
+
+	up(&sisusb->lock);
+
+	return errno ? errno : bytes_written;
+}
+
+static loff_t
+sisusb_lseek(struct file *file, loff_t offset, int orig)
+{
+	struct sisusb_usb_data *sisusb;
+	loff_t ret;
+
+	if (!(sisusb = (struct sisusb_usb_data *)file->private_data))
+		return -ENODEV;
+
+	down(&sisusb->lock);
+
+	/* Sanity check */
+	if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
+		up(&sisusb->lock);
+		return -ENODEV;
+	}
+
+	switch (orig) {
+		case 0:
+			file->f_pos = offset;
+			ret = file->f_pos;
+			/* never negative, no force_successful_syscall needed */
+			break;
+		case 1:
+			file->f_pos += offset;
+			ret = file->f_pos;
+			/* never negative, no force_successful_syscall needed */
+			break;
+		default:
+			/* seeking relative to "end of file" is not supported */
+			ret = -EINVAL;
+	}
+
+	up(&sisusb->lock);
+	return ret;
+}
+
+static int
+sisusb_handle_command(struct sisusb_usb_data *sisusb, struct sisusb_command *y,
+							unsigned long arg)
+{
+	int 	retval, port, length;
+	u32	address;
+
+	port = y->data3 -
+		SISUSB_PCI_PSEUDO_IOPORTBASE +
+		SISUSB_PCI_IOPORTBASE;
+
+	switch (y->operation) {
+		case SUCMD_GET:
+			retval = sisusb_getidxreg(sisusb, port,
+							 y->data0, &y->data1);
+			if (!retval) {
+				if (copy_to_user((void __user *)arg, y,
+							sizeof(*y)))
+					retval = -EFAULT;
+			}
+			break;
+
+		case SUCMD_SET:
+			retval = sisusb_setidxreg(sisusb, port,
+						y->data0, y->data1);
+			break;
+
+		case SUCMD_SETOR:
+			retval = sisusb_setidxregor(sisusb, port,
+						y->data0, y->data1);
+			break;
+
+		case SUCMD_SETAND:
+			retval = sisusb_setidxregand(sisusb, port,
+						y->data0, y->data1);
+			break;
+
+		case SUCMD_SETANDOR:
+			retval = sisusb_setidxregandor(sisusb, port,
+						y->data0, y->data1, y->data2);
+			break;
+
+		case SUCMD_SETMASK:
+			retval = sisusb_setidxregmask(sisusb, port,
+						y->data0, y->data1, y->data2);
+			break;
+
+		case SUCMD_CLRSCR:
+			length = (y->data0 << 16) | (y->data1 << 8) | y->data2;
+			address = y->data3 -
+				SISUSB_PCI_PSEUDO_MEMBASE +
+				SISUSB_PCI_MEMBASE;
+			retval = sisusb_clear_vram(sisusb, address, length);
+			break;
+
+		default:
+			retval = -EINVAL;
+	}
+
+	if(retval > 0)
+		retval = -EIO;
+
+	return retval;
+}
+
+static int
+sisusb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
+	     						unsigned long arg)
+{
+	struct sisusb_usb_data *sisusb;
+	struct sisusb_info x;
+	struct sisusb_command y;
+	int 	retval = 0;
+	u32 __user *argp = (u32 __user *)arg;
+
+	if (!(sisusb = (struct sisusb_usb_data *)file->private_data))
+		return -ENODEV;
+
+	down(&sisusb->lock);
+
+	/* Sanity check */
+	if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
+		retval = -ENODEV;
+		goto err_out;
+	}
+
+	switch (cmd) {
+
+		case SISUSB_GET_CONFIG_SIZE:
+
+			if (put_user(sizeof(x), argp))
+				retval = -EFAULT;
+
+			break;
+
+		case SISUSB_GET_CONFIG:
+
+			x.sisusb_id   	    = SISUSB_ID;
+			x.sisusb_version    = SISUSB_VERSION;
+			x.sisusb_revision   = SISUSB_REVISION;
+			x.sisusb_patchlevel = SISUSB_PATCHLEVEL;
+			x.sisusb_gfxinit    = sisusb->gfxinit;
+			x.sisusb_vrambase   = SISUSB_PCI_PSEUDO_MEMBASE;
+			x.sisusb_mmiobase   = SISUSB_PCI_PSEUDO_MMIOBASE;
+			x.sisusb_iobase     = SISUSB_PCI_PSEUDO_IOPORTBASE;
+			x.sisusb_pcibase    = SISUSB_PCI_PSEUDO_PCIBASE;
+			x.sisusb_vramsize   = sisusb->vramsize;
+			x.sisusb_minor	    = sisusb->minor;
+			x.sisusb_fbdevactive= 0;
+
+			if (copy_to_user((void __user *)arg, &x, sizeof(x)))
+				retval = -EFAULT;
+
+			break;
+
+		case SISUSB_COMMAND:
+
+			if (copy_from_user(&y, (void __user *)arg, sizeof(y)))
+				retval = -EFAULT;
+			else
+				retval = sisusb_handle_command(sisusb, &y, arg);
+
+			break;
+
+		default:
+			retval = -EINVAL;
+			break;
+	}
+
+err_out:
+	up(&sisusb->lock);
+	return retval;
+}
+
+#ifdef SISUSB_NEW_CONFIG_COMPAT
+static long
+sisusb_compat_ioctl(struct file *f, unsigned int cmd, unsigned long arg)
+{
+	long retval;
+
+	switch (cmd) {
+		case SISUSB_GET_CONFIG_SIZE:
+		case SISUSB_GET_CONFIG:
+		case SISUSB_COMMAND:
+			lock_kernel();
+			retval = sisusb_ioctl(f->f_dentry->d_inode, f, cmd, arg);
+			unlock_kernel();
+			return retval;
+
+		default:
+			return -ENOIOCTLCMD;
+	}
+}
+#endif
+
+static struct file_operations usb_sisusb_fops = {
+	.owner =	THIS_MODULE,
+	.open =		sisusb_open,
+	.release =	sisusb_release,
+	.read =		sisusb_read,
+	.write =	sisusb_write,
+	.llseek = 	sisusb_lseek,
+#ifdef SISUSB_NEW_CONFIG_COMPAT
+	.compat_ioctl = sisusb_compat_ioctl,
+#endif
+	.ioctl =	sisusb_ioctl
+};
+
+static struct usb_class_driver usb_sisusb_class = {
+	.name =		"usb/sisusbvga%d",
+	.fops =		&usb_sisusb_fops,
+	.mode =		S_IFCHR | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP,
+	.minor_base =	SISUSB_MINOR
+};
+
+static int sisusb_probe(struct usb_interface *intf,
+			const struct usb_device_id *id)
+{
+	struct usb_device *dev = interface_to_usbdev(intf);
+	struct sisusb_usb_data *sisusb;
+	int retval = 0, i;
+	const char *memfail =
+		KERN_ERR
+		"sisusbvga[%d]: Failed to allocate memory for %s buffer\n";
+
+	printk(KERN_INFO "sisusb: USB2VGA dongle found at address %d\n",
+		dev->devnum);
+
+	/* Allocate memory for our private */
+	if (!(sisusb = kmalloc(sizeof(*sisusb), GFP_KERNEL))) {
+		printk(KERN_ERR
+			"sisusb: Failed to allocate memory for private data\n");
+		return -ENOMEM;
+	}
+	memset(sisusb, 0, sizeof(*sisusb));
+	kref_init(&sisusb->kref);
+
+	init_MUTEX(&(sisusb->lock));
+
+	/* Register device */
+	if ((retval = usb_register_dev(intf, &usb_sisusb_class))) {
+		printk(KERN_ERR
+			"sisusb: Failed to get a minor for device %d\n",
+			dev->devnum);
+		retval = -ENODEV;
+		goto error_1;
+	}
+
+	sisusb->sisusb_dev = dev;
+	sisusb->minor      = intf->minor;
+	sisusb->vrambase   = SISUSB_PCI_MEMBASE;
+	sisusb->mmiobase   = SISUSB_PCI_MMIOBASE;
+	sisusb->mmiosize   = SISUSB_PCI_MMIOSIZE;
+	sisusb->ioportbase = SISUSB_PCI_IOPORTBASE;
+	/* Everything else is zero */
+
+	/* Allocate buffers */
+	sisusb->ibufsize = SISUSB_IBUF_SIZE;
+	if (!(sisusb->ibuf = usb_buffer_alloc(dev, SISUSB_IBUF_SIZE,
+					GFP_KERNEL, &sisusb->transfer_dma_in))) {
+		printk(memfail, "input", sisusb->minor);
+		retval = -ENOMEM;
+		goto error_2;
+	}
+
+	sisusb->numobufs = 0;
+	sisusb->obufsize = SISUSB_OBUF_SIZE;
+	for (i = 0; i < NUMOBUFS; i++) {
+		if (!(sisusb->obuf[i] = usb_buffer_alloc(dev, SISUSB_OBUF_SIZE,
+					GFP_KERNEL,
+					&sisusb->transfer_dma_out[i]))) {
+			if (i == 0) {
+				printk(memfail, "output", sisusb->minor);
+				retval = -ENOMEM;
+				goto error_3;
+			}
+			break;
+		} else
+			sisusb->numobufs++;
+
+	}
+
+	/* Allocate URBs */
+	if (!(sisusb->sisurbin = usb_alloc_urb(0, GFP_KERNEL))) {
+		printk(KERN_ERR
+			"sisusbvga[%d]: Failed to allocate URBs\n",
+			sisusb->minor);
+		retval = -ENOMEM;
+		goto error_3;
+	}
+	sisusb->completein = 1;
+
+	for (i = 0; i < sisusb->numobufs; i++) {
+		if (!(sisusb->sisurbout[i] = usb_alloc_urb(0, GFP_KERNEL))) {
+			printk(KERN_ERR
+				"sisusbvga[%d]: Failed to allocate URBs\n",
+				sisusb->minor);
+			retval = -ENOMEM;
+			goto error_4;
+		}
+		sisusb->urbout_context[i].sisusb = (void *)sisusb;
+		sisusb->urbout_context[i].urbindex = i;
+		sisusb->urbstatus[i] = 0;
+	}
+
+	printk(KERN_INFO "sisusbvga[%d]: Allocated %d output buffers\n",
+					sisusb->minor, sisusb->numobufs);
+
+	/* Do remaining init stuff */
+
+	init_waitqueue_head(&sisusb->wait_q);
+
+	usb_set_intfdata(intf, sisusb);
+
+#ifdef SISUSB_OLD_CONFIG_COMPAT
+	{
+	int ret;
+	/* Our ioctls are all "32/64bit compatible" */
+	ret =  register_ioctl32_conversion(SISUSB_GET_CONFIG_SIZE, NULL);
+	ret |= register_ioctl32_conversion(SISUSB_GET_CONFIG,      NULL);
+	ret |= register_ioctl32_conversion(SISUSB_COMMAND,         NULL);
+	if (ret)
+		printk(KERN_ERR
+			"sisusbvga[%d]: Error registering ioctl32 "
+			"translations\n",
+			sisusb->minor);
+	else
+		sisusb->ioctl32registered = 1;
+
+	}
+#endif
+
+	sisusb->present = 1;
+
+	if (dev->speed == USB_SPEED_HIGH) {
+		if (sisusb_init_gfxdevice(sisusb, 1))
+			printk(KERN_ERR
+				"sisusbvga[%d]: Failed to early "
+				"initialize device\n",
+				sisusb->minor);
+
+	} else
+		printk(KERN_INFO
+			"sisusbvga[%d]: Not attached to USB 2.0 hub, "
+			"deferring init\n",
+			sisusb->minor);
+
+	sisusb->ready = 1;
+
+	return 0;
+
+error_4:
+	sisusb_free_urbs(sisusb);
+error_3:
+	sisusb_free_buffers(sisusb);
+error_2:
+	usb_deregister_dev(intf, &usb_sisusb_class);
+error_1:
+	kfree(sisusb);
+	return retval;
+}
+
+static void sisusb_disconnect(struct usb_interface *intf)
+{
+	struct sisusb_usb_data *sisusb;
+	int minor;
+
+	down(&disconnect_sem);
+
+	/* This should *not* happen */
+	if (!(sisusb = usb_get_intfdata(intf))) {
+		up(&disconnect_sem);
+		return;
+	}
+
+	down(&sisusb->lock);
+
+	/* Wait for all URBs to complete and kill them in case (MUST do) */
+	if (!sisusb_wait_all_out_complete(sisusb))
+		sisusb_kill_all_busy(sisusb);
+
+	minor = sisusb->minor;
+
+	usb_set_intfdata(intf, NULL);
+
+	usb_deregister_dev(intf, &usb_sisusb_class);
+
+#ifdef SISUSB_OLD_CONFIG_COMPAT
+	if (sisusb->ioctl32registered) {
+		int ret;
+		sisusb->ioctl32registered = 0;
+		ret =  unregister_ioctl32_conversion(SISUSB_GET_CONFIG_SIZE);
+		ret |= unregister_ioctl32_conversion(SISUSB_GET_CONFIG);
+		ret |= unregister_ioctl32_conversion(SISUSB_COMMAND);
+		if (ret) {
+			printk(KERN_ERR
+				"sisusbvga[%d]: Error unregistering "
+				"ioctl32 translations\n",
+				minor);
+		}
+	}
+#endif
+
+	sisusb->present = 0;
+	sisusb->ready = 0;
+
+	up(&sisusb->lock);
+
+	/* decrement our usage count */
+	kref_put(&sisusb->kref, sisusb_delete);
+
+	up(&disconnect_sem);
+
+	printk(KERN_INFO "sisusbvga[%d]: Disconnected\n", minor);
+}
+
+static struct usb_device_id sisusb_table [] = {
+	{ USB_DEVICE(0x0711, 0x0900) },
+	{ }
+};
+
+MODULE_DEVICE_TABLE (usb, sisusb_table);
+
+static struct usb_driver sisusb_driver = {
+	.owner =	THIS_MODULE,
+	.name =		"sisusb",
+	.probe =	sisusb_probe,
+	.disconnect =	sisusb_disconnect,
+	.id_table =	sisusb_table
+};
+
+static int __init usb_sisusb_init(void)
+{
+	int retval;
+
+	if (!(retval = usb_register(&sisusb_driver))) {
+		printk(KERN_INFO "sisusb: Driver version %d.%d.%d\n",
+			SISUSB_VERSION, SISUSB_REVISION, SISUSB_PATCHLEVEL);
+		printk(KERN_INFO
+			"sisusb: Copyright (C) 2005 Thomas Winischhofer\n");
+	}
+
+	return retval;
+}
+
+static void __exit usb_sisusb_exit(void)
+{
+	usb_deregister(&sisusb_driver);
+}
+
+module_init(usb_sisusb_init);
+module_exit(usb_sisusb_exit);
+
+MODULE_AUTHOR("Thomas Winischhofer <thomas@winischhofer.net>");
+MODULE_DESCRIPTION("sisusb - Driver for Net2280/SiS315-based USB2VGA dongles");
+MODULE_LICENSE("GPL");
+
diff --git a/drivers/usb/misc/sisusbvga/sisusb.h b/drivers/usb/misc/sisusbvga/sisusb.h
new file mode 100644
index 000000000000..1306d006a25a
--- /dev/null
+++ b/drivers/usb/misc/sisusbvga/sisusb.h
@@ -0,0 +1,278 @@
+/*
+ * sisusb - usb kernel driver for Net2280/SiS315 based USB2VGA dongles
+ *
+ * Copyright (C) 2005 by Thomas Winischhofer, Vienna, Austria
+ *
+ * If distributed as part of the Linux kernel, this code is licensed under the
+ * terms of the GPL v2.
+ *
+ * Otherwise, the following license terms apply:
+ *
+ * * Redistribution and use in source and binary forms, with or without
+ * * modification, are permitted provided that the following conditions
+ * * are met:
+ * * 1) Redistributions of source code must retain the above copyright
+ * *    notice, this list of conditions and the following disclaimer.
+ * * 2) Redistributions in binary form must reproduce the above copyright
+ * *    notice, this list of conditions and the following disclaimer in the
+ * *    documentation and/or other materials provided with the distribution.
+ * * 3) The name of the author may not be used to endorse or promote products
+ * *    derived from this software without specific prior written permission.
+ * *
+ * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESSED 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.
+ *
+ * Author: 	Thomas Winischhofer <thomas@winischhofer.net>
+ *
+ */
+
+#ifndef _SISUSB_H_
+#define _SISUSB_H_
+
+#ifdef CONFIG_COMPAT
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,10)
+#include <linux/ioctl32.h>
+#define SISUSB_OLD_CONFIG_COMPAT
+#else
+#define SISUSB_NEW_CONFIG_COMPAT
+#endif
+#endif
+
+/* Version Information */
+
+#define SISUSB_VERSION		0
+#define SISUSB_REVISION 	0
+#define SISUSB_PATCHLEVEL	7
+
+/* USB related */
+
+#define SISUSB_MINOR	133		/* FIXME */
+
+/* Size of the sisusb input/output buffers */
+#define SISUSB_IBUF_SIZE  0x01000
+#define SISUSB_OBUF_SIZE  0x10000	/* fixed */
+
+#define NUMOBUFS 8			/* max number of output buffers/output URBs */
+
+/* About endianness:
+ *
+ * 1) I/O ports, PCI config registers. The read/write()
+ *    calls emulate inX/outX. Hence, the data is
+ *    expected/delivered in machine endiannes by this
+ *    driver.
+ * 2) Video memory. The data is copied 1:1. There is
+ *    no swapping. Ever. This means for userland that
+ *    the data has to be prepared properly. (Hint:
+ *    think graphics data format, command queue,
+ *    hardware cursor.)
+ * 3) MMIO. Data is copied 1:1. MMIO must be swapped
+ *    properly by userland.
+ *
+ */
+
+#ifdef __BIG_ENDIAN
+#define SISUSB_CORRECT_ENDIANNESS_PACKET(p) 		\
+	do {						\
+		p->header  = cpu_to_le16(p->header);	\
+		p->address = cpu_to_le32(p->address);	\
+		p->data    = cpu_to_le32(p->data);	\
+	} while(0)
+#else
+#define SISUSB_CORRECT_ENDIANNESS_PACKET(p)
+#endif
+
+struct sisusb_usb_data;
+
+struct sisusb_urb_context {		/* urb->context for outbound bulk URBs */
+	struct sisusb_usb_data *sisusb;
+	int urbindex;
+	int *actual_length;
+};
+
+struct sisusb_usb_data {
+	struct usb_device *sisusb_dev;
+	struct usb_interface *interface;
+	struct kref kref;
+	wait_queue_head_t wait_q;	/* for syncind and timeouts */
+	struct semaphore lock;		/* general race avoidance */
+	unsigned int ifnum;		/* interface number of the USB device */
+	int minor;			/* minor (for logging clarity) */
+	int isopen;			/* !=0 if open */
+	int present;			/* !=0 if device is present on the bus */
+	int ready;			/* !=0 if device is ready for userland */
+#ifdef SISUSB_OLD_CONFIG_COMPAT
+	int ioctl32registered;
+#endif
+	int numobufs;			/* number of obufs = number of out urbs */
+	char *obuf[NUMOBUFS], *ibuf;	/* transfer buffers */
+	int obufsize, ibufsize;
+	dma_addr_t transfer_dma_out[NUMOBUFS];
+	dma_addr_t transfer_dma_in;
+	struct urb *sisurbout[NUMOBUFS];
+	struct urb *sisurbin;
+	unsigned char urbstatus[NUMOBUFS];
+	unsigned char completein;
+	struct sisusb_urb_context urbout_context[NUMOBUFS];
+	unsigned long flagb0;
+	unsigned long vrambase;		/* framebuffer base */
+	unsigned int vramsize;		/* framebuffer size (bytes) */
+	unsigned long mmiobase;
+	unsigned int mmiosize;
+	unsigned long ioportbase;
+	unsigned char devinit;		/* device initialized? */
+	unsigned char gfxinit;		/* graphics core initialized? */
+	unsigned short chipid, chipvendor;
+	unsigned short chiprevision;
+};
+
+#define to_sisusb_dev(d) container_of(d, struct sisusb_usb_data, kref)
+
+/* USB transport related */
+
+/* urbstatus */
+#define SU_URB_BUSY   1
+#define SU_URB_ALLOC  2
+
+/* Endpoints */
+
+#define SISUSB_EP_GFX_IN	0x0e	/* gfx std packet out(0e)/in(8e) */
+#define SISUSB_EP_GFX_OUT	0x0e
+
+#define SISUSB_EP_GFX_BULK_OUT	0x01	/* gfx mem bulk out/in */
+#define SISUSB_EP_GFX_BULK_IN	0x02	/* ? 2 is "OUT" ? */
+
+#define SISUSB_EP_GFX_LBULK_OUT	0x03	/* gfx large mem bulk out */
+
+#define SISUSB_EP_UNKNOWN_04	0x04	/* ? 4 is "OUT" ? - unused */
+
+#define SISUSB_EP_BRIDGE_IN	0x0d	/* Net2280 out(0d)/in(8d) */
+#define SISUSB_EP_BRIDGE_OUT	0x0d
+
+#define SISUSB_TYPE_MEM		0
+#define SISUSB_TYPE_IO		1
+
+struct sisusb_packet {
+	unsigned short header;
+	u32 address;
+	u32 data;
+} __attribute__((__packed__));
+
+#define CLEARPACKET(packet) memset(packet, 0, 10)
+
+/* PCI bridge related */
+
+#define SISUSB_PCI_MEMBASE	0xd0000000
+#define SISUSB_PCI_MMIOBASE	0xe4000000
+#define SISUSB_PCI_IOPORTBASE	0x0000d000
+
+#define SISUSB_PCI_PSEUDO_MEMBASE	0x10000000
+#define SISUSB_PCI_PSEUDO_MMIOBASE	0x20000000
+#define SISUSB_PCI_PSEUDO_IOPORTBASE	0x0000d000
+#define SISUSB_PCI_PSEUDO_PCIBASE	0x00010000
+
+#define SISUSB_PCI_MMIOSIZE	(128*1024)
+#define SISUSB_PCI_PCONFSIZE	0x5c
+
+/* graphics core related */
+
+#define AROFFSET	0x40
+#define ARROFFSET	0x41
+#define GROFFSET	0x4e
+#define SROFFSET	0x44
+#define CROFFSET	0x54
+#define MISCROFFSET	0x4c
+#define MISCWOFFSET	0x42
+#define INPUTSTATOFFSET 0x5A
+#define PART1OFFSET	0x04
+#define PART2OFFSET	0x10
+#define PART3OFFSET	0x12
+#define PART4OFFSET	0x14
+#define PART5OFFSET	0x16
+#define CAPTUREOFFSET	0x00
+#define VIDEOOFFSET	0x02
+#define COLREGOFFSET	0x48
+#define PELMASKOFFSET	0x46
+#define VGAENABLE	0x43
+
+#define SISAR		SISUSB_PCI_IOPORTBASE + AROFFSET
+#define SISARR		SISUSB_PCI_IOPORTBASE + ARROFFSET
+#define SISGR		SISUSB_PCI_IOPORTBASE + GROFFSET
+#define SISSR		SISUSB_PCI_IOPORTBASE + SROFFSET
+#define SISCR		SISUSB_PCI_IOPORTBASE + CROFFSET
+#define SISMISCR	SISUSB_PCI_IOPORTBASE + MISCROFFSET
+#define SISMISCW	SISUSB_PCI_IOPORTBASE + MISCWOFFSET
+#define SISINPSTAT	SISUSB_PCI_IOPORTBASE + INPUTSTATOFFSET
+#define SISPART1	SISUSB_PCI_IOPORTBASE + PART1OFFSET
+#define SISPART2	SISUSB_PCI_IOPORTBASE + PART2OFFSET
+#define SISPART3	SISUSB_PCI_IOPORTBASE + PART3OFFSET
+#define SISPART4	SISUSB_PCI_IOPORTBASE + PART4OFFSET
+#define SISPART5	SISUSB_PCI_IOPORTBASE + PART5OFFSET
+#define SISCAP		SISUSB_PCI_IOPORTBASE + CAPTUREOFFSET
+#define SISVID		SISUSB_PCI_IOPORTBASE + VIDEOOFFSET
+#define SISCOLIDXR	SISUSB_PCI_IOPORTBASE + COLREGOFFSET - 1
+#define SISCOLIDX	SISUSB_PCI_IOPORTBASE + COLREGOFFSET
+#define SISCOLDATA	SISUSB_PCI_IOPORTBASE + COLREGOFFSET + 1
+#define SISCOL2IDX	SISPART5
+#define SISCOL2DATA	SISPART5 + 1
+#define SISPEL		SISUSB_PCI_IOPORTBASE + PELMASKOFFSET
+#define SISVGAEN	SISUSB_PCI_IOPORTBASE + VGAENABLE
+#define SISDACA		SISCOLIDX
+#define SISDACD		SISCOLDATA
+
+/* ioctl related */
+
+/* Structure argument for SISUSB_GET_INFO ioctl  */
+struct sisusb_info {
+	__u32	sisusb_id;		/* for identifying sisusb */
+#define SISUSB_ID  0x53495355		/* Identify myself with 'SISU' */
+	__u8	sisusb_version;
+	__u8	sisusb_revision;
+	__u8	sisusb_patchlevel;
+	__u8	sisusb_gfxinit;		/* graphics core initialized? */
+
+	__u32	sisusb_vrambase;
+	__u32	sisusb_mmiobase;
+	__u32	sisusb_iobase;
+	__u32	sisusb_pcibase;
+
+	__u32	sisusb_vramsize;	/* framebuffer size in bytes */
+
+	__u32	sisusb_minor;
+
+	__u32   sisusb_fbdevactive;	/* != 0 if framebuffer device active */
+
+	__u8	sisusb_reserved[32];	/* for future use */
+};
+
+struct sisusb_command {
+	__u8   operation;	/* see below */
+	__u8   data0;		/* operation dependent */
+	__u8   data1;		/* operation dependent */
+	__u8   data2;		/* operation dependent */
+	__u32  data3;		/* operation dependent */
+	__u32  data4;		/* for future use */
+};
+
+#define SUCMD_GET      0x01	/* for all: data0 = index, data3 = port */
+#define SUCMD_SET      0x02	/* data1 = value */
+#define SUCMD_SETOR    0x03	/* data1 = or */
+#define SUCMD_SETAND   0x04	/* data1 = and */
+#define SUCMD_SETANDOR 0x05	/* data1 = and, data2 = or */
+#define SUCMD_SETMASK  0x06	/* data1 = data, data2 = mask */
+
+#define SUCMD_CLRSCR   0x07	/* data0:1:2 = length, data3 = address */
+
+#define SISUSB_COMMAND		_IOWR(0xF3,0x3D,struct sisusb_command)
+#define SISUSB_GET_CONFIG_SIZE 	_IOR(0xF3,0x3E,__u32)
+#define SISUSB_GET_CONFIG  	_IOR(0xF3,0x3F,struct sisusb_info)
+
+#endif /* SISUSB_H */
+