Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 3288 insertions, 0 deletions

diff --git a/kernel/drivers/usb/misc/sisusbvga/sisusb.c b/kernel/drivers/usb/misc/sisusbvga/sisusb.c
new file mode 100644
index 000000000..022dc0008
--- /dev/null
+++ b/kernel/drivers/usb/misc/sisusbvga/sisusb.c
@@ -0,0 +1,3288 @@
+/*
+ * sisusb - usb kernel driver for SiS315(E) based USB2VGA dongles
+ *
+ * Main part
+ *
+ * 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/mutex.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/signal.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/vmalloc.h>
+
+#include "sisusb.h"
+#include "sisusb_init.h"
+
+#ifdef INCL_SISUSB_CON
+#include <linux/font.h>
+#endif
+
+#define SISUSB_DONTSYNC
+
+/* Forward declarations / clean-up routines */
+
+#ifdef INCL_SISUSB_CON
+static int sisusb_first_vc = 0;
+static int sisusb_last_vc = 0;
+module_param_named(first, sisusb_first_vc, int, 0);
+module_param_named(last, sisusb_last_vc, int, 0);
+MODULE_PARM_DESC(first, "Number of first console to take over (1 - MAX_NR_CONSOLES)");
+MODULE_PARM_DESC(last, "Number of last console to take over (1 - MAX_NR_CONSOLES)");
+#endif
+
+static struct usb_driver sisusb_driver;
+
+static void
+sisusb_free_buffers(struct sisusb_usb_data *sisusb)
+{
+	int i;
+
+	for (i = 0; i < NUMOBUFS; i++) {
+		if (sisusb->obuf[i]) {
+			kfree(sisusb->obuf[i]);
+			sisusb->obuf[i] = NULL;
+		}
+	}
+	if (sisusb->ibuf) {
+		kfree(sisusb->ibuf);
+		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 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)
+{
+	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->actual_length = 0;
+
+	/* 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_KERNEL);
+
+	/* 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 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)
+{
+	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->actual_length = 0;
+
+	sisusb->completein = 0;
+	retval = usb_submit_urb(urb, GFP_KERNEL);
+	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 timeout */
+			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);
+
+			if (result == -ETIMEDOUT) {
+
+				/* Will not happen if async */
+				if (!retry--)
+					return -ETIME;
+
+				continue;
+			}
+
+			if ((result == 0) && !async && transferred_len) {
+
+				thispass -= transferred_len;
+				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);
+
+		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
+ *   - the write routines expect "data" in machine endianness format.
+ *     The data will be converted to leXX in sisusb_xxx_packet.
+ *   - the read routines can expect read data in machine-endianess.
+ */
+
+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 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 = *((u16 *)kernbuffer);
+
+			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;
+#ifdef __BIG_ENDIAN
+				swap32 = (buf[0] << 16) |
+					 (buf[1] <<  8) |
+					 buf[2];
+#else
+				swap32 = (buf[2] << 16) |
+					 (buf[1] <<  8) |
+					 buf[0];
+#endif
+			} else
+#ifdef __BIG_ENDIAN
+				swap32 = (kernbuffer[0] << 16) |
+					 (kernbuffer[1] <<  8) |
+					 kernbuffer[2];
+#else
+				swap32 = (kernbuffer[2] << 16) |
+					 (kernbuffer[1] <<  8) |
+					 kernbuffer[0];
+#endif
+
+			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 = *((u32 *)kernbuffer);
+
+			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)
+					dev_err(&sisusb->sisusb_dev->dev, "Wrote %zd of %d bytes, error %d\n",
+						*bytes_written, length, ret);
+				else if (msgcount == 500)
+					dev_err(&sisusb->sisusb_dev->dev, "Too many errors, logging stopped\n");
+			}
+			addr += (*bytes_written);
+			length -= (*bytes_written);
+	    }
+
+	    if (ret)
+		break;
+
+	}
+
+	return ret ? -EIO : 0;
+}
+
+/* Remember: Read data in packet is in machine-endianess! So for
+ * byte, word, 24bit, long no endian correction is necessary.
+ */
+
+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 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 {
+					*((u16 *)kernbuffer) = swap16;
+				}
+			}
+			return ret;
+
+		case 3:
+			ret |= sisusb_read_memio_24bit(sisusb, SISUSB_TYPE_MEM,
+								addr, &swap32);
+			if (!ret) {
+				(*bytes_read) += 3;
+#ifdef __BIG_ENDIAN
+				buf[0] = (swap32 >> 16) & 0xff;
+				buf[1] = (swap32 >> 8) & 0xff;
+				buf[2] = swap32 & 0xff;
+#else
+				buf[2] = (swap32 >> 16) & 0xff;
+				buf[1] = (swap32 >> 8) & 0xff;
+				buf[0] = swap32 & 0xff;
+#endif
+				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 {
+					*((u32 *)kernbuffer) = swap32;
+					kernbuffer += 4;
+				}
+				addr += 4;
+				length -= 4;
+			}
+	    }
+
+	    if (ret)
+		break;
+	}
+
+	return ret;
+}
+
+/* High level: Gfx (indexed) register access */
+
+#ifdef INCL_SISUSB_CON
+int
+sisusb_setreg(struct sisusb_usb_data *sisusb, int port, u8 data)
+{
+	return sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port, data);
+}
+
+int
+sisusb_getreg(struct sisusb_usb_data *sisusb, int port, u8 *data)
+{
+	return sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO, port, data);
+}
+#endif
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+int
+sisusb_setidxregor(struct sisusb_usb_data *sisusb, int port, u8 index, u8 myor)
+{
+	return(sisusb_setidxregandor(sisusb, port, index, 0xff, myor));
+}
+
+int
+sisusb_setidxregand(struct sisusb_usb_data *sisusb, int port, u8 idx, u8 myand)
+{
+	return(sisusb_setidxregandor(sisusb, port, idx, myand, 0x00));
+}
+
+/* Write/read video ram */
+
+#ifdef INCL_SISUSB_CON
+int
+sisusb_writeb(struct sisusb_usb_data *sisusb, u32 adr, u8 data)
+{
+	return(sisusb_write_memio_byte(sisusb, SISUSB_TYPE_MEM, adr, data));
+}
+
+int
+sisusb_readb(struct sisusb_usb_data *sisusb, u32 adr, u8 *data)
+{
+	return(sisusb_read_memio_byte(sisusb, SISUSB_TYPE_MEM, adr, data));
+}
+
+int
+sisusb_copy_memory(struct sisusb_usb_data *sisusb, char *src,
+			u32 dest, int length, size_t *bytes_written)
+{
+	return(sisusb_write_mem_bulk(sisusb, dest, src, length, NULL, 0, bytes_written));
+}
+
+#ifdef SISUSBENDIANTEST
+int
+sisusb_read_memory(struct sisusb_usb_data *sisusb, char *dest,
+			u32 src, int length, size_t *bytes_written)
+{
+	return(sisusb_read_mem_bulk(sisusb, src, dest, length, NULL, bytes_written));
+}
+#endif
+#endif
+
+#ifdef SISUSBENDIANTEST
+static void
+sisusb_testreadwrite(struct sisusb_usb_data *sisusb)
+{
+    static char srcbuffer[] = { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77 };
+    char destbuffer[10];
+    size_t dummy;
+    int i,j;
+
+    sisusb_copy_memory(sisusb, srcbuffer, sisusb->vrambase, 7, &dummy);
+
+    for(i = 1; i <= 7; i++) {
+        dev_dbg(&sisusb->sisusb_dev->dev, "sisusb: rwtest %d bytes\n", i);
+	sisusb_read_memory(sisusb, destbuffer, sisusb->vrambase, i, &dummy);
+	for(j = 0; j < i; j++) {
+	     dev_dbg(&sisusb->sisusb_dev->dev, "rwtest read[%d] = %x\n", j, destbuffer[j]);
+	}
+    }
+}
+#endif
+
+/* 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) {
+				dev_err(&sisusb->sisusb_dev->dev,"RAM size detection failed, assuming 8MB video RAM\n");
+				ret |= SETIREG(SISSR,0x14,0x31);
+				/* TODO */
+			}
+		} else {
+			dev_err(&sisusb->sisusb_dev->dev, "DDR RAM device found, assuming 8MB video RAM\n");
+			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;
+	static const char ram_datarate[4] = {'S', 'S', 'D', 'D'};
+	static const char ram_dynamictype[4] = {'D', 'G', 'D', 'G'};
+	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;
+	}
+
+
+	dev_info(&sisusb->sisusb_dev->dev, "%dMB %s %cDR S%cRAM, bus width %d\n",
+		 sisusb->vramsize >> 20, ramtypetext1,
+		 ram_datarate[ramtype], ram_dynamictype[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;
+}
+
+
+#ifdef INCL_SISUSB_CON
+
+/* Set up default text mode:
+   - Set text mode (0x03)
+   - Upload default font
+   - Upload user font (if available)
+*/
+
+int
+sisusb_reset_text_mode(struct sisusb_usb_data *sisusb, int init)
+{
+	int ret = 0, slot = sisusb->font_slot, i;
+	const struct font_desc *myfont;
+	u8 *tempbuf;
+	u16 *tempbufb;
+	size_t written;
+	static const char bootstring[] = "SiSUSB VGA text console, (C) 2005 Thomas Winischhofer.";
+	static const char bootlogo[] = "(o_ //\\ V_/_";
+
+	/* sisusb->lock is down */
+
+	if (!sisusb->SiS_Pr)
+		return 1;
+
+	sisusb->SiS_Pr->IOAddress = SISUSB_PCI_IOPORTBASE + 0x30;
+	sisusb->SiS_Pr->sisusb = (void *)sisusb;
+
+	/* Set mode 0x03 */
+	SiSUSBSetMode(sisusb->SiS_Pr, 0x03);
+
+	if (!(myfont = find_font("VGA8x16")))
+		return 1;
+
+	if (!(tempbuf = vmalloc(8192)))
+		return 1;
+
+	for (i = 0; i < 256; i++)
+		memcpy(tempbuf + (i * 32), myfont->data + (i * 16), 16);
+
+	/* Upload default font */
+	ret = sisusbcon_do_font_op(sisusb, 1, 0, tempbuf, 8192, 0, 1, NULL, 16, 0);
+
+	vfree(tempbuf);
+
+	/* Upload user font (and reset current slot) */
+	if (sisusb->font_backup) {
+		ret |= sisusbcon_do_font_op(sisusb, 1, 2, sisusb->font_backup,
+				8192, sisusb->font_backup_512, 1, NULL,
+				sisusb->font_backup_height, 0);
+		if (slot != 2)
+			sisusbcon_do_font_op(sisusb, 1, 0, NULL, 0, 0, 1,
+					NULL, 16, 0);
+	}
+
+	if (init && !sisusb->scrbuf) {
+
+		if ((tempbuf = vmalloc(8192))) {
+
+			i = 4096;
+			tempbufb = (u16 *)tempbuf;
+			while (i--)
+				*(tempbufb++) = 0x0720;
+
+			i = 0;
+			tempbufb = (u16 *)tempbuf;
+			while (bootlogo[i]) {
+				*(tempbufb++) = 0x0700 | bootlogo[i++];
+				if (!(i % 4))
+					tempbufb += 76;
+			}
+
+			i = 0;
+			tempbufb = (u16 *)tempbuf + 6;
+			while (bootstring[i])
+				*(tempbufb++) = 0x0700 | bootstring[i++];
+
+			ret |= sisusb_copy_memory(sisusb, tempbuf,
+				sisusb->vrambase, 8192, &written);
+
+			vfree(tempbuf);
+
+		}
+
+	} else if (sisusb->scrbuf) {
+
+		ret |= sisusb_copy_memory(sisusb, (char *)sisusb->scrbuf,
+				sisusb->vrambase, sisusb->scrbuf_size, &written);
+
+	}
+
+	if (sisusb->sisusb_cursor_size_from >= 0 &&
+	    sisusb->sisusb_cursor_size_to >= 0) {
+		sisusb_setidxreg(sisusb, SISCR, 0x0a,
+				sisusb->sisusb_cursor_size_from);
+		sisusb_setidxregandor(sisusb, SISCR, 0x0b, 0xe0,
+				sisusb->sisusb_cursor_size_to);
+	} else {
+		sisusb_setidxreg(sisusb, SISCR, 0x0a, 0x2d);
+		sisusb_setidxreg(sisusb, SISCR, 0x0b, 0x0e);
+		sisusb->sisusb_cursor_size_to = -1;
+	}
+
+	slot = sisusb->sisusb_cursor_loc;
+	if(slot < 0) slot = 0;
+
+	sisusb->sisusb_cursor_loc = -1;
+	sisusb->bad_cursor_pos = 1;
+
+	sisusb_set_cursor(sisusb, slot);
+
+	sisusb_setidxreg(sisusb, SISCR, 0x0c, (sisusb->cur_start_addr >> 8));
+	sisusb_setidxreg(sisusb, SISCR, 0x0d, (sisusb->cur_start_addr & 0xff));
+
+	sisusb->textmodedestroyed = 0;
+
+	/* sisusb->lock is down */
+
+	return ret;
+}
+
+#endif
+
+/* fops */
+
+static int
+sisusb_open(struct inode *inode, struct file *file)
+{
+	struct sisusb_usb_data *sisusb;
+	struct usb_interface *interface;
+	int subminor = iminor(inode);
+
+	if (!(interface = usb_find_interface(&sisusb_driver, subminor))) {
+		return -ENODEV;
+	}
+
+	if (!(sisusb = usb_get_intfdata(interface))) {
+		return -ENODEV;
+	}
+
+	mutex_lock(&sisusb->lock);
+
+	if (!sisusb->present || !sisusb->ready) {
+		mutex_unlock(&sisusb->lock);
+		return -ENODEV;
+	}
+
+	if (sisusb->isopen) {
+		mutex_unlock(&sisusb->lock);
+		return -EBUSY;
+	}
+
+	if (!sisusb->devinit) {
+		if (sisusb->sisusb_dev->speed == USB_SPEED_HIGH ||
+		    sisusb->sisusb_dev->speed == USB_SPEED_SUPER) {
+			if (sisusb_init_gfxdevice(sisusb, 0)) {
+				mutex_unlock(&sisusb->lock);
+				dev_err(&sisusb->sisusb_dev->dev, "Failed to initialize device\n");
+				return -EIO;
+			}
+		} else {
+			mutex_unlock(&sisusb->lock);
+			dev_err(&sisusb->sisusb_dev->dev, "Device not attached to USB 2.0 hub\n");
+			return -EIO;
+		}
+	}
+
+	/* Increment usage count for our sisusb */
+	kref_get(&sisusb->kref);
+
+	sisusb->isopen = 1;
+
+	file->private_data = sisusb;
+
+	mutex_unlock(&sisusb->lock);
+
+	return 0;
+}
+
+void
+sisusb_delete(struct kref *kref)
+{
+	struct sisusb_usb_data *sisusb = to_sisusb_dev(kref);
+
+	if (!sisusb)
+		return;
+
+	usb_put_dev(sisusb->sisusb_dev);
+
+	sisusb->sisusb_dev = NULL;
+	sisusb_free_buffers(sisusb);
+	sisusb_free_urbs(sisusb);
+#ifdef INCL_SISUSB_CON
+	kfree(sisusb->SiS_Pr);
+#endif
+	kfree(sisusb);
+}
+
+static int
+sisusb_release(struct inode *inode, struct file *file)
+{
+	struct sisusb_usb_data *sisusb;
+
+	if (!(sisusb = file->private_data))
+		return -ENODEV;
+
+	mutex_lock(&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);
+	}
+
+	sisusb->isopen = 0;
+	file->private_data = NULL;
+
+	mutex_unlock(&sisusb->lock);
+
+	/* decrement the usage count on our device */
+	kref_put(&sisusb->kref, sisusb_delete);
+
+	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 = file->private_data))
+		return -ENODEV;
+
+	mutex_lock(&sisusb->lock);
+
+	/* Sanity check */
+	if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
+		mutex_unlock(&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) {
+			mutex_unlock(&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;
+
+	mutex_unlock(&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 = file->private_data))
+		return -ENODEV;
+
+	mutex_lock(&sisusb->lock);
+
+	/* Sanity check */
+	if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
+		mutex_unlock(&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) {
+			mutex_unlock(&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;
+
+	mutex_unlock(&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 = file->private_data))
+		return -ENODEV;
+
+	mutex_lock(&sisusb->lock);
+
+	/* Sanity check */
+	if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
+		mutex_unlock(&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;
+	}
+
+	mutex_unlock(&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;
+
+	/* All our commands require the device
+	 * to be initialized.
+	 */
+	if (!sisusb->devinit)
+		return -ENODEV;
+
+	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:
+			/* Gfx core must be initialized */
+			if (!sisusb->gfxinit)
+				return -ENODEV;
+
+			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;
+
+		case SUCMD_HANDLETEXTMODE:
+			retval = 0;
+#ifdef INCL_SISUSB_CON
+			/* Gfx core must be initialized, SiS_Pr must exist */
+			if (!sisusb->gfxinit || !sisusb->SiS_Pr)
+				return -ENODEV;
+
+			switch (y->data0) {
+			case 0:
+				retval = sisusb_reset_text_mode(sisusb, 0);
+				break;
+			case 1:
+				sisusb->textmodedestroyed = 1;
+				break;
+			}
+#endif
+			break;
+
+#ifdef INCL_SISUSB_CON
+		case SUCMD_SETMODE:
+			/* Gfx core must be initialized, SiS_Pr must exist */
+			if (!sisusb->gfxinit || !sisusb->SiS_Pr)
+				return -ENODEV;
+
+			retval = 0;
+
+			sisusb->SiS_Pr->IOAddress = SISUSB_PCI_IOPORTBASE + 0x30;
+			sisusb->SiS_Pr->sisusb = (void *)sisusb;
+
+			if (SiSUSBSetMode(sisusb->SiS_Pr, y->data3))
+				retval = -EINVAL;
+
+			break;
+
+		case SUCMD_SETVESAMODE:
+			/* Gfx core must be initialized, SiS_Pr must exist */
+			if (!sisusb->gfxinit || !sisusb->SiS_Pr)
+				return -ENODEV;
+
+			retval = 0;
+
+			sisusb->SiS_Pr->IOAddress = SISUSB_PCI_IOPORTBASE + 0x30;
+			sisusb->SiS_Pr->sisusb = (void *)sisusb;
+
+			if (SiSUSBSetVESAMode(sisusb->SiS_Pr, y->data3))
+				retval = -EINVAL;
+
+			break;
+#endif
+
+		default:
+			retval = -EINVAL;
+	}
+
+	if (retval > 0)
+		retval = -EIO;
+
+	return retval;
+}
+
+static long
+sisusb_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	struct sisusb_usb_data *sisusb;
+	struct sisusb_info x;
+	struct sisusb_command y;
+	long retval = 0;
+	u32 __user *argp = (u32 __user *)arg;
+
+	if (!(sisusb = file->private_data))
+		return -ENODEV;
+
+	mutex_lock(&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;
+#ifdef INCL_SISUSB_CON
+			x.sisusb_conactive  = sisusb->haveconsole ? 1 : 0;
+#else
+			x.sisusb_conactive  = 0;
+#endif
+			memset(x.sisusb_reserved, 0, sizeof(x.sisusb_reserved));
+
+			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 = -ENOTTY;
+			break;
+	}
+
+err_out:
+	mutex_unlock(&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:
+			retval = sisusb_ioctl(f, cmd, arg);
+			return retval;
+
+		default:
+			return -ENOIOCTLCMD;
+	}
+}
+#endif
+
+static const 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
+	.unlocked_ioctl = sisusb_ioctl
+};
+
+static struct usb_class_driver usb_sisusb_class = {
+	.name =		"sisusbvga%d",
+	.fops =		&usb_sisusb_fops,
+	.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;
+
+	dev_info(&dev->dev, "USB2VGA dongle found at address %d\n",
+		dev->devnum);
+
+	/* Allocate memory for our private */
+	if (!(sisusb = kzalloc(sizeof(*sisusb), GFP_KERNEL))) {
+		dev_err(&dev->dev, "Failed to allocate memory for private data\n");
+		return -ENOMEM;
+	}
+	kref_init(&sisusb->kref);
+
+	mutex_init(&(sisusb->lock));
+
+	/* Register device */
+	if ((retval = usb_register_dev(intf, &usb_sisusb_class))) {
+		dev_err(&sisusb->sisusb_dev->dev, "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 = kmalloc(SISUSB_IBUF_SIZE, GFP_KERNEL))) {
+		dev_err(&sisusb->sisusb_dev->dev, "Failed to allocate memory for input buffer");
+		retval = -ENOMEM;
+		goto error_2;
+	}
+
+	sisusb->numobufs = 0;
+	sisusb->obufsize = SISUSB_OBUF_SIZE;
+	for (i = 0; i < NUMOBUFS; i++) {
+		if (!(sisusb->obuf[i] = kmalloc(SISUSB_OBUF_SIZE, GFP_KERNEL))) {
+			if (i == 0) {
+				dev_err(&sisusb->sisusb_dev->dev, "Failed to allocate memory for output buffer\n");
+				retval = -ENOMEM;
+				goto error_3;
+			}
+			break;
+		} else
+			sisusb->numobufs++;
+
+	}
+
+	/* Allocate URBs */
+	if (!(sisusb->sisurbin = usb_alloc_urb(0, GFP_KERNEL))) {
+		dev_err(&sisusb->sisusb_dev->dev, "Failed to allocate URBs\n");
+		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))) {
+			dev_err(&sisusb->sisusb_dev->dev, "Failed to allocate URBs\n");
+			retval = -ENOMEM;
+			goto error_4;
+		}
+		sisusb->urbout_context[i].sisusb = (void *)sisusb;
+		sisusb->urbout_context[i].urbindex = i;
+		sisusb->urbstatus[i] = 0;
+	}
+
+	dev_info(&sisusb->sisusb_dev->dev, "Allocated %d output buffers\n", sisusb->numobufs);
+
+#ifdef INCL_SISUSB_CON
+	/* Allocate our SiS_Pr */
+	if (!(sisusb->SiS_Pr = kmalloc(sizeof(struct SiS_Private), GFP_KERNEL))) {
+		dev_err(&sisusb->sisusb_dev->dev, "Failed to allocate SiS_Pr\n");
+	}
+#endif
+
+	/* Do remaining init stuff */
+
+	init_waitqueue_head(&sisusb->wait_q);
+
+	usb_set_intfdata(intf, sisusb);
+
+	usb_get_dev(sisusb->sisusb_dev);
+
+	sisusb->present = 1;
+
+	if (dev->speed == USB_SPEED_HIGH || dev->speed == USB_SPEED_SUPER) {
+		int initscreen = 1;
+#ifdef INCL_SISUSB_CON
+		if (sisusb_first_vc > 0 &&
+		    sisusb_last_vc > 0 &&
+		    sisusb_first_vc <= sisusb_last_vc &&
+		    sisusb_last_vc <= MAX_NR_CONSOLES)
+			initscreen = 0;
+#endif
+		if (sisusb_init_gfxdevice(sisusb, initscreen))
+			dev_err(&sisusb->sisusb_dev->dev, "Failed to early initialize device\n");
+
+	} else
+		dev_info(&sisusb->sisusb_dev->dev, "Not attached to USB 2.0 hub, deferring init\n");
+
+	sisusb->ready = 1;
+
+#ifdef SISUSBENDIANTEST
+	dev_dbg(&sisusb->sisusb_dev->dev, "*** RWTEST ***\n");
+	sisusb_testreadwrite(sisusb);
+	dev_dbg(&sisusb->sisusb_dev->dev, "*** RWTEST END ***\n");
+#endif
+
+#ifdef INCL_SISUSB_CON
+	sisusb_console_init(sisusb, sisusb_first_vc, sisusb_last_vc);
+#endif
+
+	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;
+
+	/* This should *not* happen */
+	if (!(sisusb = usb_get_intfdata(intf)))
+		return;
+
+#ifdef INCL_SISUSB_CON
+	sisusb_console_exit(sisusb);
+#endif
+
+	usb_deregister_dev(intf, &usb_sisusb_class);
+
+	mutex_lock(&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);
+
+	usb_set_intfdata(intf, NULL);
+
+	sisusb->present = 0;
+	sisusb->ready = 0;
+
+	mutex_unlock(&sisusb->lock);
+
+	/* decrement our usage count */
+	kref_put(&sisusb->kref, sisusb_delete);
+}
+
+static const struct usb_device_id sisusb_table[] = {
+	{ USB_DEVICE(0x0711, 0x0550) },
+	{ USB_DEVICE(0x0711, 0x0900) },
+	{ USB_DEVICE(0x0711, 0x0901) },
+	{ USB_DEVICE(0x0711, 0x0902) },
+	{ USB_DEVICE(0x0711, 0x0903) },
+	{ USB_DEVICE(0x0711, 0x0918) },
+	{ USB_DEVICE(0x0711, 0x0920) },
+	{ USB_DEVICE(0x0711, 0x0950) },
+	{ USB_DEVICE(0x0711, 0x5200) },
+	{ USB_DEVICE(0x182d, 0x021c) },
+	{ USB_DEVICE(0x182d, 0x0269) },
+	{ }
+};
+
+MODULE_DEVICE_TABLE (usb, sisusb_table);
+
+static struct usb_driver sisusb_driver = {
+	.name =		"sisusb",
+	.probe =	sisusb_probe,
+	.disconnect =	sisusb_disconnect,
+	.id_table =	sisusb_table,
+};
+
+static int __init usb_sisusb_init(void)
+{
+
+#ifdef INCL_SISUSB_CON
+	sisusb_init_concode();
+#endif
+
+	return usb_register(&sisusb_driver);
+}
+
+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("sisusbvga - Driver for Net2280/SiS315-based USB2VGA dongles");
+MODULE_LICENSE("GPL");
+