From 29d6678fd546377459ef75cf54abeef5b969b5cf Mon Sep 17 00:00:00 2001
From: Richard Purdie <rpurdie@linux.intel.com>
Date: Fri, 27 Aug 2010 15:14:24 +0100
Subject: Major layout change to the packages directory

Having one monolithic packages directory makes it hard to find things
and is generally overwhelming. This commit splits it into several
logical sections roughly based on function, recipes.txt gives more
information about the classifications used.

The opportunity is also used to switch from "packages" to "recipes"
as used in OpenEmbedded as the term "packages" can be confusing to
people and has many different meanings.

Not all recipes have been classified yet, this is just a first pass
at separating things out. Some packages are moved to meta-extras as
they're no longer actively used or maintained.

Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
---
 .../linux-rp-2.6.23/uvesafb-0.1-rc3-2.6.22.patch   | 2590 ++++++++++++++++++++
 1 file changed, 2590 insertions(+)
 create mode 100644 meta/recipes-kernel/linux/linux-rp-2.6.23/uvesafb-0.1-rc3-2.6.22.patch

(limited to 'meta/recipes-kernel/linux/linux-rp-2.6.23/uvesafb-0.1-rc3-2.6.22.patch')

diff --git a/meta/recipes-kernel/linux/linux-rp-2.6.23/uvesafb-0.1-rc3-2.6.22.patch b/meta/recipes-kernel/linux/linux-rp-2.6.23/uvesafb-0.1-rc3-2.6.22.patch
new file mode 100644
index 0000000000..711375114f
--- /dev/null
+++ b/meta/recipes-kernel/linux/linux-rp-2.6.23/uvesafb-0.1-rc3-2.6.22.patch
@@ -0,0 +1,2590 @@
+---
+ Documentation/fb/uvesafb.txt |  188 +++
+ drivers/video/Kconfig        |   18 
+ drivers/video/Makefile       |    1 
+ drivers/video/modedb.c       |   28 
+ drivers/video/uvesafb.c      | 2058 +++++++++++++++++++++++++++++++++++++++++++
+ include/linux/connector.h    |    7 
+ include/video/Kbuild         |    2 
+ include/video/uvesafb.h      |  193 ++++
+ 8 files changed, 2479 insertions(+), 16 deletions(-)
+
+Index: linux-2.6.22/Documentation/fb/uvesafb.txt
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.22/Documentation/fb/uvesafb.txt	2007-08-28 21:56:34.000000000 +0100
+@@ -0,0 +1,188 @@
++
++uvesafb - A Generic Driver for VBE2+ compliant video cards
++==========================================================
++
++1. Requirements
++---------------
++
++uvesafb should work with any video card that has a Video BIOS compliant
++with the VBE 2.0 standard.
++
++Unlike other drivers, uvesafb makes use of a userspace helper called
++v86d.  v86d is used to run the x86 Video BIOS code in a simulated and
++controlled environment.  This allows uvesafb to function on arches other
++than x86.  Check the v86d documentation for a list of currently supported
++arches.
++
++v86d source code can be downloaded from the following website:
++  http://dev.gentoo.org/~spock/projects/uvesafb
++
++Please refer to the v86d documentation for detailed configuration and
++installation instructions.
++
++Note that the v86d userspace helper has to be available at all times in
++order for uvesafb to work properly.  If you want to use uvesafb during
++early boot, you will have to include v86d into an initramfs image, and
++either compile it into the kernel or use it as an initrd.
++
++2. Caveats and limitations
++--------------------------
++
++uvesafb is a _generic_ driver which supports a wide variety of video
++cards, but which is ultimately limited by the Video BIOS interface.
++The most important limitations are:
++
++- Lack of any type of acceleration.
++- A strict and limited set of supported video modes.  Often the native
++  or most optimal resolution/refresh rate for your setup will not work
++  with uvesafb, simply because the Video BIOS doesn't support the
++  video mode you want to use.  This can be especially painful with
++  widescreen panels, where native video modes don't have the 4:3 aspect
++  ratio, which is what most BIOS-es are limited to.
++- Adjusting the refresh rate is only possible with a VBE 3.0 compliant
++  Video BIOS.  Note that many nVidia Video BIOS-es claim to be VBE 3.0
++  compliant, while they simply ignore any refresh rate settings.
++
++3. Configuration
++----------------
++
++uvesafb can be compiled either as a module, or directly into the kernel.
++In both cases it supports the same set of configuration options, which
++are either given on the kernel command line or as module parameters, e.g.:
++
++ video=uvesafb:1024x768-32,mtrr:3,ywrap (compiled into the kernel)
++
++ # modprobe uvesafb mode=1024x768-32 mtrr=3 scroll=ywrap  (module)
++
++Accepted options:
++
++ypan    Enable display panning using the VESA protected mode
++        interface.  The visible screen is just a window of the
++        video memory, console scrolling is done by changing the
++        start of the window.  Available on x86 only.
++
++ywrap   Same as ypan, but assumes your gfx board can wrap-around
++        the video memory (i.e. starts reading from top if it
++        reaches the end of video memory).  Faster than ypan.
++		Available on x86 only.
++
++redraw  Scroll by redrawing the affected part of the screen, this
++        is the safe (and slow) default.
++
++(If you're using uvesafb as a module, the above three options are
++ used a parameter of the scroll option, e.g. scroll=ypan.)
++
++vgapal  Use the standard VGA registers for palette changes.
++
++pmipal  Use the protected mode interface for palette changes.
++        This is the default if the protected mode interface is
++        available.  Available on x86 only.
++
++mtrr:n  Setup memory type range registers for the framebuffer
++        where n:
++              0 - disabled (equivalent to nomtrr) (default)
++              1 - uncachable
++              2 - write-back
++              3 - write-combining
++              4 - write-through
++
++        If you see the following in dmesg, choose the type that matches
++        the old one.  In this example, use "mtrr:2".
++...
++mtrr: type mismatch for e0000000,8000000 old: write-back new: write-combining
++...
++
++nomtrr  Do not use memory type range registers.
++
++vremap:n
++        Remap 'n' MiB of video RAM.  If 0 or not specified, remap memory
++        according to video mode.
++
++vtotal:n
++        If the video BIOS of your card incorrectly determines the total
++        amount of video RAM, use this option to override the BIOS (in MiB).
++
++<mode>  The mode you want to set, in the standard modedb format.  Refer to
++        modedb.txt for a detailed description.  When uvesafb is compiled as
++        a module, the mode string should be provided as a value of the
++        'mode' option.
++
++vbemode:x
++        Force the use of VBE mode x.  The mode will only be set if it's
++        found in the VBE-provided list of supported modes.
++        NOTE: The mode number 'x' should be specified in VESA mode number
++        notation, not the Linux kernel one (eg. 257 instead of 769).
++        HINT: If you use this option because normal <mode> parameter does
++        not work for you and you use a X server, you'll probably want to
++        set the 'nocrtc' option to ensure that the video mode is properly
++        restored after console <-> X switches.
++
++nocrtc  Do not use CRTC timings while setting the video mode.  This option
++        has any effect only if the Video BIOS is VBE 3.0 compliant.  Use it
++        if you have problems with modes set the standard way.  Note that
++        using this option implies that any refresh rate adjustments will
++        be ignored and the refresh rate will stay at your BIOS default (60 Hz).
++
++noedid  Do not try to fetch and use EDID-provided modes.
++
++noblank Disable hardware blanking.
++
++v86d:path
++        Set path to the v86d executable. This option is only available as
++        a module parameter, and not as a part of the video= string.  If you
++        need to use it and have uvesafb built into the kernel, use
++        uvesafb.v86d="path".
++
++Additionally, the following parameters may be provided.  They all override the
++EDID-provided values and BIOS defaults.  Refer to your monitor's specs to get
++the correct values for maxhf, maxvf and maxclk for your hardware.
++
++maxhf:n     Maximum horizontal frequency (in kHz).
++maxvf:n     Maximum vertical frequency (in Hz).
++maxclk:n    Maximum pixel clock (in MHz).
++
++4. The sysfs interface
++----------------------
++
++uvesafb provides several sysfs nodes for configurable parameters and
++additional information.
++
++Driver attributes:
++
++/sys/bus/platform/drivers/uvesafb
++  - v86d (default: /sbin/v86d)
++    Path to the v86d executable. v86d is started by uvesafb
++    if an instance of the daemon isn't already running.
++
++Device attributes:
++
++/sys/bus/platform/drivers/uvesafb/uvesafb.0
++  - nocrtc
++    Use the default refresh rate (60 Hz) if set to 1.
++
++  - oem_product_name
++  - oem_product_rev
++  - oem_string
++  - oem_vendor
++    Information about the card and its maker.
++
++  - vbe_modes
++    A list of video modes supported by the Video BIOS along with their
++    VBE mode numbers in hex.
++
++  - vbe_version
++    A BCD value indicating the implemented VBE standard.
++
++5. Miscellaneous
++----------------
++
++Uvesafb will set a video mode with the default refresh rate and timings
++from the Video BIOS if you set pixclock to 0 in fb_var_screeninfo.
++
++
++--
++ Michal Januszewski <spock@gentoo.org>
++ Last updated: 2007-06-16
++
++ Documentation of the uvesafb options is loosely based on vesafb.txt.
++
+Index: linux-2.6.22/drivers/video/Kconfig
+===================================================================
+--- linux-2.6.22.orig/drivers/video/Kconfig	2007-08-28 21:56:33.000000000 +0100
++++ linux-2.6.22/drivers/video/Kconfig	2007-08-28 21:56:34.000000000 +0100
+@@ -592,6 +592,24 @@ config FB_TGA
+ 
+ 	  Say Y if you have one of those.
+ 
++config FB_UVESA
++	tristate "Userspace VESA VGA graphics support"
++	depends on FB && CONNECTOR
++	select FB_CFB_FILLRECT
++	select FB_CFB_COPYAREA
++	select FB_CFB_IMAGEBLIT
++	select FB_MODE_HELPERS
++	help
++	  This is the frame buffer driver for generic VBE 2.0 compliant
++	  graphic cards. It can also take advantage of VBE 3.0 features,
++	  such as refresh rate adjustment.
++
++	  This driver generally provides more features than vesafb but
++	  requires a userspace helper application called 'v86d'. See
++	  <file:Documentation/fb/uvesafb.txt> for more information.
++
++	  If unsure, say N.
++
+ config FB_VESA
+ 	bool "VESA VGA graphics support"
+ 	depends on (FB = y) && X86
+Index: linux-2.6.22/drivers/video/Makefile
+===================================================================
+--- linux-2.6.22.orig/drivers/video/Makefile	2007-08-28 21:56:33.000000000 +0100
++++ linux-2.6.22/drivers/video/Makefile	2007-08-28 21:56:34.000000000 +0100
+@@ -116,6 +116,7 @@ obj-$(CONFIG_FB_XILINX)           += xil
+ obj-$(CONFIG_FB_OMAP)             += omap/
+ 
+ # Platform or fallback drivers go here
++obj-$(CONFIG_FB_UVESA)            += uvesafb.o
+ obj-$(CONFIG_FB_VESA)             += vesafb.o
+ obj-$(CONFIG_FB_IMAC)             += imacfb.o
+ obj-$(CONFIG_FB_VGA16)            += vga16fb.o
+Index: linux-2.6.22/drivers/video/modedb.c
+===================================================================
+--- linux-2.6.22.orig/drivers/video/modedb.c	2007-08-28 21:54:13.000000000 +0100
++++ linux-2.6.22/drivers/video/modedb.c	2007-08-28 21:56:34.000000000 +0100
+@@ -606,26 +606,29 @@ done:
+ 	DPRINTK("Trying specified video mode%s %ix%i\n",
+ 	    refresh_specified ? "" : " (ignoring refresh rate)", xres, yres);
+ 
+-	diff = refresh;
++	if (!refresh_specified)
++		diff = 0;
++	else
++		diff = refresh;
++
+ 	best = -1;
+ 	for (i = 0; i < dbsize; i++) {
+-		if (name_matches(db[i], name, namelen) ||
+-		    (res_specified && res_matches(db[i], xres, yres))) {
+-			if(!fb_try_mode(var, info, &db[i], bpp)) {
+-				if(!refresh_specified || db[i].refresh == refresh)
+-					return 1;
+-				else {
+-					if(diff > abs(db[i].refresh - refresh)) {
+-						diff = abs(db[i].refresh - refresh);
+-						best = i;
+-					}
++		if ((name_matches(db[i], name, namelen) ||
++		    (res_specified && res_matches(db[i], xres, yres))) &&
++		    !fb_try_mode(var, info, &db[i], bpp)) {
++			if (refresh_specified && db[i].refresh == refresh) {
++				return 1;
++			} else {
++				if (diff < db[i].refresh) {
++					diff = db[i].refresh;
++					best = i;
+ 				}
+ 			}
+ 		}
+ 	}
+ 	if (best != -1) {
+ 		fb_try_mode(var, info, &db[best], bpp);
+-		return 2;
++		return (refresh_specified) ? 2 : 1;
+ 	}
+ 
+ 	diff = xres + yres;
+@@ -938,6 +941,7 @@ void fb_destroy_modelist(struct list_hea
+ 		kfree(pos);
+ 	}
+ }
++EXPORT_SYMBOL_GPL(fb_destroy_modelist);
+ 
+ /**
+  * fb_videomode_to_modelist: convert mode array to mode list
+Index: linux-2.6.22/drivers/video/uvesafb.c
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.22/drivers/video/uvesafb.c	2007-08-28 21:56:34.000000000 +0100
+@@ -0,0 +1,2058 @@
++/*
++ * A framebuffer driver for VBE 2.0+ compliant video cards
++ *
++ * (c) 2007 Michal Januszewski <spock@gentoo.org>
++ *     Loosely based upon the vesafb driver.
++ *
++ */
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/moduleparam.h>
++#include <linux/skbuff.h>
++#include <linux/timer.h>
++#include <linux/completion.h>
++#include <linux/connector.h>
++#include <linux/random.h>
++#include <linux/platform_device.h>
++#include <linux/limits.h>
++#include <linux/fb.h>
++#include <linux/io.h>
++#include <linux/mutex.h>
++#include <video/edid.h>
++#include <video/vga.h>
++#include <video/uvesafb.h>
++#ifdef CONFIG_MTRR
++#include <asm/mtrr.h>
++#endif
++#include "edid.h"
++
++static struct cb_id uvesafb_cn_id = {
++	.idx = CN_IDX_V86D,
++	.val = CN_VAL_V86D_UVESAFB
++};
++static char v86d_path[PATH_MAX] = "/sbin/v86d";
++static char v86d_started;	/* has v86d been started by uvesafb? */
++
++static struct fb_fix_screeninfo uvesafb_fix __devinitdata = {
++	.id	= "VESA VGA",
++	.type	= FB_TYPE_PACKED_PIXELS,
++	.accel	= FB_ACCEL_NONE,
++	.visual = FB_VISUAL_TRUECOLOR,
++};
++
++static int mtrr		__devinitdata = 3; /* enable mtrr by default */
++static int blank	__devinitdata = 1; /* enable blanking by default */
++static int ypan		__devinitdata = 1; /* 0: scroll, 1: ypan, 2: ywrap */
++static int pmi_setpal	__devinitdata = 1; /* use PMI for palette changes */
++static int nocrtc	__devinitdata; /* ignore CRTC settings */
++static int noedid	__devinitdata; /* don't try DDC transfers */
++static int vram_remap	__devinitdata; /* set amt. of memory to be used */
++static int vram_total	__devinitdata; /* set total amount of memory */
++static u16 maxclk	__devinitdata; /* maximum pixel clock */
++static u16 maxvf	__devinitdata; /* maximum vertical frequency */
++static u16 maxhf	__devinitdata; /* maximum horizontal frequency */
++static u16 vbemode	__devinitdata; /* force use of a specific VBE mode */
++static char *mode_option __devinitdata;
++
++static struct uvesafb_ktask *uvfb_tasks[UVESAFB_TASKS_MAX];
++static DEFINE_MUTEX(uvfb_lock);
++
++/*
++ * A handler for replies from userspace.
++ *
++ * Make sure each message passes consistency checks and if it does,
++ * find the kernel part of the task struct, copy the registers and
++ * the buffer contents and then complete the task.
++ */
++static void uvesafb_cn_callback(void *data)
++{
++	struct cn_msg *msg = data;
++	struct uvesafb_task *utask;
++	struct uvesafb_ktask *task;
++
++	if (msg->seq >= UVESAFB_TASKS_MAX)
++		return;
++
++	mutex_lock(&uvfb_lock);
++	task = uvfb_tasks[msg->seq];
++
++	if (!task || msg->ack != task->ack) {
++		mutex_unlock(&uvfb_lock);
++		return;
++	}
++
++	utask = (struct uvesafb_task *)msg->data;
++
++	/* Sanity checks for the buffer length. */
++	if (task->t.buf_len < utask->buf_len ||
++	    utask->buf_len > msg->len - sizeof(*utask)) {
++		mutex_unlock(&uvfb_lock);
++		return;
++	}
++
++	uvfb_tasks[msg->seq] = NULL;
++	mutex_unlock(&uvfb_lock);
++
++	memcpy(&task->t, utask, sizeof(*utask));
++
++	if (task->t.buf_len && task->buf)
++		memcpy(task->buf, utask + 1, task->t.buf_len);
++
++	complete(task->done);
++	return;
++}
++
++static int uvesafb_helper_start(void)
++{
++	char *envp[] = {
++		"HOME=/",
++		"PATH=/sbin:/bin",
++		NULL,
++	};
++
++	char *argv[] = {
++		v86d_path,
++		NULL,
++	};
++
++	return call_usermodehelper(v86d_path, argv, envp, 1);
++}
++
++/*
++ * Execute a uvesafb task.
++ *
++ * Returns 0 if the task is executed successfully.
++ *
++ * A message sent to the userspace consists of the uvesafb_task
++ * struct and (optionally) a buffer. The uvesafb_task struct is
++ * a simplified version of uvesafb_ktask (its kernel counterpart)
++ * containing only the register values, flags and the length of
++ * the buffer.
++ *
++ * Each message is assigned a sequence number (increased linearly)
++ * and a random ack number. The sequence number is used as a key
++ * for the uvfb_tasks array which holds pointers to uvesafb_ktask
++ * structs for all requests.
++ */
++static int uvesafb_exec(struct uvesafb_ktask *task)
++{
++	static int seq;
++	struct cn_msg *m;
++	int err;
++	int len = sizeof(task->t) + task->t.buf_len;
++
++	/*
++	 * Check whether the message isn't longer than the maximum
++	 * allowed by connector.
++	 */
++	if (sizeof(*m) + len > CONNECTOR_MAX_MSG_SIZE) {
++		printk(KERN_WARNING "uvesafb: message too long (%d), "
++			"can't execute task\n", (int)(sizeof(*m) + len));
++		return -E2BIG;
++	}
++
++	m = kzalloc(sizeof(*m) + len, GFP_KERNEL);
++	if (!m)
++		return -ENOMEM;
++
++	init_completion(task->done);
++
++	memcpy(&m->id, &uvesafb_cn_id, sizeof(m->id));
++	m->seq = seq;
++	m->len = len;
++	m->ack = random32();
++
++	/* uvesafb_task structure */
++	memcpy(m + 1, &task->t, sizeof(task->t));
++
++	/* Buffer */
++	memcpy((u8 *)(m + 1) + sizeof(task->t), task->buf, task->t.buf_len);
++
++	/*
++	 * Save the message ack number so that we can find the kernel
++	 * part of this task when a reply is received from userspace.
++	 */
++	task->ack = m->ack;
++
++	mutex_lock(&uvfb_lock);
++
++	/* If all slots are taken -- bail out. */
++	if (uvfb_tasks[seq]) {
++		mutex_unlock(&uvfb_lock);
++		return -EBUSY;
++	}
++
++	/* Save a pointer to the kernel part of the task struct. */
++	uvfb_tasks[seq] = task;
++	mutex_unlock(&uvfb_lock);
++
++	err = cn_netlink_send(m, 0, gfp_any());
++	if (err == -ESRCH) {
++		/*
++		 * Try to start the userspace helper if sending
++		 * the request failed the first time.
++		 */
++		err = uvesafb_helper_start();
++		if (err) {
++			printk(KERN_ERR "uvesafb: failed to execute %s\n",
++					v86d_path);
++			printk(KERN_ERR "uvesafb: make sure that the v86d "
++					"helper is installed and executable\n");
++		} else {
++			v86d_started = 1;
++			err = cn_netlink_send(m, 0, gfp_any());
++		}
++	}
++	kfree(m);
++
++	if (!err && !(task->t.flags & TF_EXIT))
++		err = !wait_for_completion_timeout(task->done,
++				msecs_to_jiffies(UVESAFB_TIMEOUT));
++
++	mutex_lock(&uvfb_lock);
++	uvfb_tasks[seq] = NULL;
++	mutex_unlock(&uvfb_lock);
++
++	seq++;
++	if (seq >= UVESAFB_TASKS_MAX)
++		seq = 0;
++
++	return err;
++}
++
++/*
++ * Free a uvesafb_ktask struct.
++ */
++static void uvesafb_free(struct uvesafb_ktask *task)
++{
++	if (task) {
++		if (task->done)
++			kfree(task->done);
++		kfree(task);
++	}
++}
++
++/*
++ * Prepare a uvesafb_ktask struct to be used again.
++ */
++static void uvesafb_reset(struct uvesafb_ktask *task)
++{
++	struct completion *cpl = task->done;
++
++	memset(task, 0, sizeof(*task));
++	task->done = cpl;
++}
++
++/*
++ * Allocate and prepare a uvesafb_ktask struct.
++ */
++static struct uvesafb_ktask *uvesafb_prep(void)
++{
++	struct uvesafb_ktask *task;
++
++	task = kzalloc(sizeof(*task), GFP_KERNEL);
++	if (task) {
++		task->done = kzalloc(sizeof(*task->done), GFP_KERNEL);
++		if (!task->done) {
++			kfree(task);
++			task = NULL;
++		}
++	}
++	return task;
++}
++
++static void uvesafb_setup_var(struct fb_var_screeninfo *var,
++		struct fb_info *info, struct vbe_mode_ib *mode)
++{
++	struct uvesafb_par *par = info->par;
++
++	var->vmode = FB_VMODE_NONINTERLACED;
++	var->sync = FB_SYNC_VERT_HIGH_ACT;
++
++	var->xres = mode->x_res;
++	var->yres = mode->y_res;
++	var->xres_virtual = mode->x_res;
++	var->yres_virtual = (par->ypan) ?
++			info->fix.smem_len / mode->bytes_per_scan_line :
++			mode->y_res;
++	var->xoffset = 0;
++	var->yoffset = 0;
++	var->bits_per_pixel = mode->bits_per_pixel;
++
++	if (var->bits_per_pixel == 15)
++		var->bits_per_pixel = 16;
++
++	if (var->bits_per_pixel > 8) {
++		var->red.offset    = mode->red_off;
++		var->red.length    = mode->red_len;
++		var->green.offset  = mode->green_off;
++		var->green.length  = mode->green_len;
++		var->blue.offset   = mode->blue_off;
++		var->blue.length   = mode->blue_len;
++		var->transp.offset = mode->rsvd_off;
++		var->transp.length = mode->rsvd_len;
++	} else {
++		var->red.offset    = 0;
++		var->green.offset  = 0;
++		var->blue.offset   = 0;
++		var->transp.offset = 0;
++
++		/*
++		 * We're assuming that we can switch the DAC to 8 bits. If
++		 * this proves to be incorrect, we'll update the fields
++		 * later in set_par().
++		 */
++		if (par->vbe_ib.capabilities & VBE_CAP_CAN_SWITCH_DAC) {
++			var->red.length    = 8;
++			var->green.length  = 8;
++			var->blue.length   = 8;
++			var->transp.length = 0;
++		} else {
++			var->red.length    = 6;
++			var->green.length  = 6;
++			var->blue.length   = 6;
++			var->transp.length = 0;
++		}
++	}
++}
++
++static int uvesafb_vbe_find_mode(struct uvesafb_par *par,
++		int xres, int yres, int depth, unsigned char flags)
++{
++	int i, match = -1, h = 0, d = 0x7fffffff;
++
++	for (i = 0; i < par->vbe_modes_cnt; i++) {
++		h = abs(par->vbe_modes[i].x_res - xres) +
++		    abs(par->vbe_modes[i].y_res - yres) +
++		    abs(depth - par->vbe_modes[i].depth);
++
++		/*
++		 * We have an exact match in terms of resolution
++		 * and depth.
++		 */
++		if (h == 0)
++			return i;
++
++		if (h < d || (h == d && par->vbe_modes[i].depth > depth)) {
++			d = h;
++			match = i;
++		}
++	}
++	i = 1;
++
++	if (flags & UVESAFB_EXACT_DEPTH &&
++			par->vbe_modes[match].depth != depth)
++		i = 0;
++
++	if (flags & UVESAFB_EXACT_RES && d > 24)
++		i = 0;
++
++	if (i != 0)
++		return match;
++	else
++		return -1;
++}
++
++static u8 *uvesafb_vbe_state_save(struct uvesafb_par *par)
++{
++	struct uvesafb_ktask *task;
++	u8 *state;
++	int err;
++
++	if (!par->vbe_state_size)
++		return NULL;
++
++	state = kmalloc(par->vbe_state_size, GFP_KERNEL);
++	if (!state)
++		return NULL;
++
++	task = uvesafb_prep();
++	if (!task) {
++		kfree(state);
++		return NULL;
++	}
++
++	task->t.regs.eax = 0x4f04;
++	task->t.regs.ecx = 0x000f;
++	task->t.regs.edx = 0x0001;
++	task->t.flags = TF_BUF_RET | TF_BUF_ESBX;
++	task->t.buf_len = par->vbe_state_size;
++	task->buf = state;
++	err = uvesafb_exec(task);
++
++	if (err || (task->t.regs.eax & 0xffff) != 0x004f) {
++		printk(KERN_WARNING "uvesafb: VBE get state call "
++				"failed (eax=0x%x, err=%d)\n",
++				task->t.regs.eax, err);
++		kfree(state);
++		state = NULL;
++	}
++
++	uvesafb_free(task);
++	return state;
++}
++
++static void uvesafb_vbe_state_restore(struct uvesafb_par *par, u8 *state_buf)
++{
++	struct uvesafb_ktask *task;
++	int err;
++
++	if (!state_buf)
++		return;
++
++	task = uvesafb_prep();
++	if (!task)
++		return;
++
++	task->t.regs.eax = 0x4f04;
++	task->t.regs.ecx = 0x000f;
++	task->t.regs.edx = 0x0002;
++	task->t.buf_len = par->vbe_state_size;
++	task->t.flags = TF_BUF_ESBX;
++	task->buf = state_buf;
++
++	err = uvesafb_exec(task);
++	if (err || (task->t.regs.eax & 0xffff) != 0x004f)
++		printk(KERN_WARNING "uvesafb: VBE state restore call "
++				"failed (eax=0x%x, err=%d)\n",
++				task->t.regs.eax, err);
++
++	uvesafb_free(task);
++}
++
++static int __devinit uvesafb_vbe_getinfo(struct uvesafb_ktask *task,
++		struct uvesafb_par *par)
++{
++	int err;
++
++	task->t.regs.eax = 0x4f00;
++	task->t.flags = TF_VBEIB;
++	task->t.buf_len = sizeof(struct vbe_ib);
++	task->buf = &par->vbe_ib;
++	strncpy(par->vbe_ib.vbe_signature, "VBE2", 4);
++
++	err = uvesafb_exec(task);
++	if (err || (task->t.regs.eax & 0xffff) != 0x004f) {
++		printk(KERN_ERR "uvesafb: Getting VBE info block failed "
++				"(eax=0x%x, err=%d)\n", (u32)task->t.regs.eax,
++				err);
++		return -EINVAL;
++	}
++
++	if (par->vbe_ib.vbe_version < 0x0200) {
++		printk(KERN_ERR "uvesafb: Sorry, pre-VBE 2.0 cards are "
++				"not supported.\n");
++		return -EINVAL;
++	}
++
++	if (!par->vbe_ib.mode_list_ptr) {
++		printk(KERN_ERR "uvesafb: Missing mode list!\n");
++		return -EINVAL;
++	}
++
++	printk(KERN_INFO "uvesafb: ");
++
++	/*
++	 * Convert string pointers and the mode list pointer into
++	 * usable addresses. Print informational messages about the
++	 * video adapter and its vendor.
++	 */
++	if (par->vbe_ib.oem_vendor_name_ptr)
++		printk("%s, ",
++			((char *)task->buf) + par->vbe_ib.oem_vendor_name_ptr);
++
++	if (par->vbe_ib.oem_product_name_ptr)
++		printk("%s, ",
++			((char *)task->buf) + par->vbe_ib.oem_product_name_ptr);
++
++	if (par->vbe_ib.oem_product_rev_ptr)
++		printk("%s, ",
++			((char *)task->buf) + par->vbe_ib.oem_product_rev_ptr);
++
++	if (par->vbe_ib.oem_string_ptr)
++		printk("OEM: %s, ",
++			((char *)task->buf) + par->vbe_ib.oem_string_ptr);
++
++	printk("VBE v%d.%d\n", ((par->vbe_ib.vbe_version & 0xff00) >> 8),
++			par->vbe_ib.vbe_version & 0xff);
++
++	return 0;
++}
++
++static int __devinit uvesafb_vbe_getmodes(struct uvesafb_ktask *task,
++		struct uvesafb_par *par)
++{
++	int off = 0, err;
++	u16 *mode;
++
++	par->vbe_modes_cnt = 0;
++
++	/* Count available modes. */
++	mode = (u16 *) (((u8 *)&par->vbe_ib) + par->vbe_ib.mode_list_ptr);
++	while (*mode != 0xffff) {
++		par->vbe_modes_cnt++;
++		mode++;
++	}
++
++	par->vbe_modes = kzalloc(sizeof(struct vbe_mode_ib) *
++				par->vbe_modes_cnt, GFP_KERNEL);
++	if (!par->vbe_modes)
++		return -ENOMEM;
++
++	/* Get info about all available modes. */
++	mode = (u16 *) (((u8 *)&par->vbe_ib) + par->vbe_ib.mode_list_ptr);
++	while (*mode != 0xffff) {
++		struct vbe_mode_ib *mib;
++
++		uvesafb_reset(task);
++		task->t.regs.eax = 0x4f01;
++		task->t.regs.ecx = (u32) *mode;
++		task->t.flags = TF_BUF_RET | TF_BUF_ESDI;
++		task->t.buf_len = sizeof(struct vbe_mode_ib);
++		task->buf = par->vbe_modes + off;
++
++		err = uvesafb_exec(task);
++		if (err || (task->t.regs.eax & 0xffff) != 0x004f) {
++			printk(KERN_ERR "uvesafb: Getting mode info block "
++				"for mode 0x%x failed (eax=0x%x, err=%d)\n",
++				*mode, (u32)task->t.regs.eax, err);
++			return -EINVAL;
++		}
++
++		mib = task->buf;
++		mib->mode_id = *mode;
++
++		/*
++		 * We only want modes that are supported with the current
++		 * hardware configuration, color, graphics and that have
++		 * support for the LFB.
++		 */
++		if ((mib->mode_attr & VBE_MODE_MASK) == VBE_MODE_MASK &&
++				 mib->bits_per_pixel >= 8)
++			off++;
++		else
++			par->vbe_modes_cnt--;
++
++		mode++;
++		mib->depth = mib->red_len + mib->green_len + mib->blue_len;
++
++		/*
++		 * Handle 8bpp modes and modes with broken color component
++		 * lengths.
++		 */
++		if (mib->depth == 0 || (mib->depth == 24 &&
++					mib->bits_per_pixel == 32))
++			mib->depth = mib->bits_per_pixel;
++	}
++
++	return 0;
++}
++
++/*
++ * The Protected Mode Interface is 32-bit x86 code, so we only run it on
++ * x86 and not x86_64.
++ */
++#ifdef CONFIG_X86_32
++static int __devinit uvesafb_vbe_getpmi(struct uvesafb_ktask *task,
++		struct uvesafb_par *par)
++{
++	int i, err;
++
++	uvesafb_reset(task);
++	task->t.regs.eax = 0x4f0a;
++	task->t.regs.ebx = 0x0;
++	err = uvesafb_exec(task);
++
++	if ((task->t.regs.eax & 0xffff) != 0x4f || task->t.regs.es < 0xc000) {
++		par->pmi_setpal = par->ypan = 0;
++	} else {
++		par->pmi_base = (u16 *)phys_to_virt(((u32)task->t.regs.es << 4)
++						+ task->t.regs.edi);
++		par->pmi_start = (u8 *)par->pmi_base + par->pmi_base[1];
++		par->pmi_pal = (u8 *)par->pmi_base + par->pmi_base[2];
++		printk(KERN_INFO "uvesafb: protected mode interface info at "
++				 "%04x:%04x\n",
++				 (u16)task->t.regs.es, (u16)task->t.regs.edi);
++		printk(KERN_INFO "uvesafb: pmi: set display start = %p, "
++				 "set palette = %p\n", par->pmi_start,
++				 par->pmi_pal);
++
++		if (par->pmi_base[3]) {
++			printk(KERN_INFO "uvesafb: pmi: ports = ");
++			for (i = par->pmi_base[3]/2;
++					par->pmi_base[i] != 0xffff; i++)
++				printk("%x ", par->pmi_base[i]);
++			printk("\n");
++
++			if (par->pmi_base[i] != 0xffff) {
++				printk(KERN_INFO "uvesafb: can't handle memory"
++						 " requests, pmi disabled\n");
++				par->ypan = par->pmi_setpal = 0;
++			}
++		}
++	}
++	return 0;
++}
++#endif /* CONFIG_X86_32 */
++
++/*
++ * Check whether a video mode is supported by the Video BIOS and is
++ * compatible with the monitor limits.
++ */
++static int __devinit uvesafb_is_valid_mode(struct fb_videomode *mode,
++		struct fb_info *info)
++{
++	if (info->monspecs.gtf) {
++		fb_videomode_to_var(&info->var, mode);
++		if (fb_validate_mode(&info->var, info))
++			return 0;
++	}
++
++	if (uvesafb_vbe_find_mode(info->par, mode->xres, mode->yres, 8,
++				UVESAFB_EXACT_RES) == -1)
++		return 0;
++
++	return 1;
++}
++
++static int __devinit uvesafb_vbe_getedid(struct uvesafb_ktask *task,
++		struct fb_info *info)
++{
++	struct uvesafb_par *par = info->par;
++	int err = 0;
++
++	if (noedid || par->vbe_ib.vbe_version < 0x0300)
++		return -EINVAL;
++
++	task->t.regs.eax = 0x4f15;
++	task->t.regs.ebx = 0;
++	task->t.regs.ecx = 0;
++	task->t.buf_len = 0;
++	task->t.flags = 0;
++
++	err = uvesafb_exec(task);
++
++	if ((task->t.regs.eax & 0xffff) != 0x004f || err)
++		return -EINVAL;
++
++	if ((task->t.regs.ebx & 0x3) == 3) {
++		printk(KERN_INFO "uvesafb: VBIOS/hardware supports both "
++				 "DDC1 and DDC2 transfers\n");
++	} else if ((task->t.regs.ebx & 0x3) == 2) {
++		printk(KERN_INFO "uvesafb: VBIOS/hardware supports DDC2 "
++				 "transfers\n");
++	} else if ((task->t.regs.ebx & 0x3) == 1) {
++		printk(KERN_INFO "uvesafb: VBIOS/hardware supports DDC1 "
++				 "transfers\n");
++	} else {
++		printk(KERN_INFO "uvesafb: VBIOS/hardware doesn't support "
++				 "DDC transfers\n");
++		return -EINVAL;
++	}
++
++	task->t.regs.eax = 0x4f15;
++	task->t.regs.ebx = 1;
++	task->t.regs.ecx = task->t.regs.edx = 0;
++	task->t.flags = TF_BUF_RET | TF_BUF_ESDI;
++	task->t.buf_len = EDID_LENGTH;
++	task->buf = kzalloc(EDID_LENGTH, GFP_KERNEL);
++
++	err = uvesafb_exec(task);
++
++	if ((task->t.regs.eax & 0xffff) == 0x004f && !err) {
++		fb_edid_to_monspecs(task->buf, &info->monspecs);
++
++		if (info->monspecs.vfmax && info->monspecs.hfmax) {
++			/*
++			 * If the maximum pixel clock wasn't specified in
++			 * the EDID block, set it to 300 MHz.
++			 */
++			if (info->monspecs.dclkmax == 0)
++				info->monspecs.dclkmax = 300 * 1000000;
++			info->monspecs.gtf = 1;
++		}
++	} else {
++		err = -EINVAL;
++	}
++
++	kfree(task->buf);
++	return err;
++}
++
++static void __devinit uvesafb_vbe_getmonspecs(struct uvesafb_ktask *task,
++		struct fb_info *info)
++{
++	struct uvesafb_par *par = info->par;
++	int i;
++
++	memset(&info->monspecs, 0, sizeof(info->monspecs));
++
++	/*
++	 * If we don't get all necessary data from the EDID block,
++	 * mark it as incompatible with the GTF and set nocrtc so
++	 * that we always use the default BIOS refresh rate.
++	 */
++	if (uvesafb_vbe_getedid(task, info)) {
++		info->monspecs.gtf = 0;
++		par->nocrtc = 1;
++	}
++
++	/* Kernel command line overrides. */
++	if (maxclk)
++		info->monspecs.dclkmax = maxclk * 1000000;
++	if (maxvf)
++		info->monspecs.vfmax = maxvf;
++	if (maxhf)
++		info->monspecs.hfmax = maxhf * 1000;
++
++	/*
++	 * In case DDC transfers are not supported, the user can provide
++	 * monitor limits manually. Lower limits are set to "safe" values.
++	 */
++	if (info->monspecs.gtf == 0 && maxclk && maxvf && maxhf) {
++		info->monspecs.dclkmin = 0;
++		info->monspecs.vfmin = 60;
++		info->monspecs.hfmin = 29000;
++		info->monspecs.gtf = 1;
++		par->nocrtc = 0;
++	}
++
++	if (info->monspecs.gtf)
++		printk(KERN_INFO
++			"uvesafb: monitor limits: vf = %d Hz, hf = %d kHz, "
++			"clk = %d MHz\n", info->monspecs.vfmax,
++			(int)(info->monspecs.hfmax / 1000),
++			(int)(info->monspecs.dclkmax / 1000000));
++	else
++		printk(KERN_INFO "uvesafb: no monitor limits have been set, "
++				 "default refresh rate will be used\n");
++
++	/* Add VBE modes to the modelist. */
++	for (i = 0; i < par->vbe_modes_cnt; i++) {
++		struct fb_var_screeninfo var;
++		struct vbe_mode_ib *mode;
++		struct fb_videomode vmode;
++
++		mode = &par->vbe_modes[i];
++		memset(&var, 0, sizeof(var));
++
++		var.xres = mode->x_res;
++		var.yres = mode->y_res;
++
++		fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60, &var, info);
++		fb_var_to_videomode(&vmode, &var);
++		fb_add_videomode(&vmode, &info->modelist);
++	}
++
++	/* Add valid VESA modes to our modelist. */
++	for (i = 0; i < VESA_MODEDB_SIZE; i++) {
++		if (uvesafb_is_valid_mode((struct fb_videomode *)
++						&vesa_modes[i], info))
++			fb_add_videomode(&vesa_modes[i], &info->modelist);
++	}
++
++	for (i = 0; i < info->monspecs.modedb_len; i++) {
++		if (uvesafb_is_valid_mode(&info->monspecs.modedb[i], info))
++			fb_add_videomode(&info->monspecs.modedb[i],
++					&info->modelist);
++	}
++
++	return;
++}
++
++static void __devinit uvesafb_vbe_getstatesize(struct uvesafb_ktask *task,
++		struct uvesafb_par *par)
++{
++	int err;
++
++	uvesafb_reset(task);
++
++	/*
++	 * Get the VBE state buffer size. We want all available
++	 * hardware state data (CL = 0x0f).
++	 */
++	task->t.regs.eax = 0x4f04;
++	task->t.regs.ecx = 0x000f;
++	task->t.regs.edx = 0x0000;
++	task->t.flags = 0;
++
++	err = uvesafb_exec(task);
++
++	if (err || (task->t.regs.eax & 0xffff) != 0x004f) {
++		printk(KERN_WARNING "uvesafb: VBE state buffer size "
++			"cannot be determined (eax=0x%x, err=%d)\n",
++			task->t.regs.eax, err);
++		par->vbe_state_size = 0;
++		return;
++	}
++
++	par->vbe_state_size = 64 * (task->t.regs.ebx & 0xffff);
++}
++
++static int __devinit uvesafb_vbe_init(struct fb_info *info)
++{
++	struct uvesafb_ktask *task = NULL;
++	struct uvesafb_par *par = info->par;
++	int err;
++
++	task = uvesafb_prep();
++	if (!task)
++		return -ENOMEM;
++
++	err = uvesafb_vbe_getinfo(task, par);
++	if (err)
++		goto out;
++
++	err = uvesafb_vbe_getmodes(task, par);
++	if (err)
++		goto out;
++
++	par->nocrtc = nocrtc;
++#ifdef CONFIG_X86_32
++	par->pmi_setpal = pmi_setpal;
++	par->ypan = ypan;
++
++	if (par->pmi_setpal || par->ypan)
++		uvesafb_vbe_getpmi(task, par);
++#else
++	/* The protected mode interface is not available on non-x86. */
++	par->pmi_setpal = par->ypan = 0;
++#endif
++
++	INIT_LIST_HEAD(&info->modelist);
++	uvesafb_vbe_getmonspecs(task, info);
++	uvesafb_vbe_getstatesize(task, par);
++
++out:	uvesafb_free(task);
++	return err;
++}
++
++static int __devinit uvesafb_vbe_init_mode(struct fb_info *info)
++{
++	struct list_head *pos;
++	struct fb_modelist *modelist;
++	struct fb_videomode *mode;
++	struct uvesafb_par *par = info->par;
++	int i, modeid;
++
++	/* Has the user requested a specific VESA mode? */
++	if (vbemode) {
++		for (i = 0; i < par->vbe_modes_cnt; i++) {
++			if (par->vbe_modes[i].mode_id == vbemode) {
++				fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60,
++							&info->var, info);
++				/*
++				 * With pixclock set to 0, the default BIOS
++				 * timings will be used in set_par().
++				 */
++				info->var.pixclock = 0;
++				modeid = i;
++				goto gotmode;
++			}
++		}
++		printk(KERN_INFO "uvesafb: requested VBE mode 0x%x is "
++				 "unavailable\n", vbemode);
++		vbemode = 0;
++	}
++
++	/* Count the modes in the modelist */
++	i = 0;
++	list_for_each(pos, &info->modelist)
++		i++;
++
++	/*
++	 * Convert the modelist into a modedb so that we can use it with
++	 * fb_find_mode().
++	 */
++	mode = kzalloc(i * sizeof(*mode), GFP_KERNEL);
++	if (mode) {
++		i = 0;
++		list_for_each(pos, &info->modelist) {
++			modelist = list_entry(pos, struct fb_modelist, list);
++			mode[i] = modelist->mode;
++			i++;
++		}
++
++		if (!mode_option)
++			mode_option = UVESAFB_DEFAULT_MODE;
++
++		i = fb_find_mode(&info->var, info, mode_option, mode, i,
++			NULL, 8);
++
++		kfree(mode);
++	}
++
++	/* fb_find_mode() failed */
++	if (i == 0 || i >= 3) {
++		info->var.xres = 640;
++		info->var.yres = 480;
++		mode = (struct fb_videomode *)
++				fb_find_best_mode(&info->var, &info->modelist);
++
++		if (mode) {
++			fb_videomode_to_var(&info->var, mode);
++		} else {
++			modeid = par->vbe_modes[0].mode_id;
++			fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60,
++				    &info->var, info);
++			goto gotmode;
++		}
++	}
++
++	/* Look for a matching VBE mode. */
++	modeid = uvesafb_vbe_find_mode(par, info->var.xres, info->var.yres,
++			info->var.bits_per_pixel, UVESAFB_EXACT_RES);
++
++	if (modeid == -1)
++		return -EINVAL;
++
++gotmode:
++	uvesafb_setup_var(&info->var, info, &par->vbe_modes[modeid]);
++
++	/*
++	 * If we are not VBE3.0+ compliant, we're done -- the BIOS will
++	 * ignore our timings anyway.
++	 */
++	if (par->vbe_ib.vbe_version < 0x0300 || par->nocrtc)
++		fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60,
++					&info->var, info);
++
++	return modeid;
++}
++
++static int uvesafb_setpalette(struct uvesafb_pal_entry *entries, int count,
++		int start, struct fb_info *info)
++{
++	struct uvesafb_ktask *task;
++	struct uvesafb_par *par = info->par;
++	int i = par->mode_idx;
++	int err = 0;
++
++	/*
++	 * We support palette modifications for 8 bpp modes only, so
++	 * there can never be more than 256 entries.
++	 */
++	if (start + count > 256)
++		return -EINVAL;
++
++	/* Use VGA registers if mode is VGA-compatible. */
++	if (i >= 0 && i < par->vbe_modes_cnt &&
++	    par->vbe_modes[i].mode_attr & VBE_MODE_VGACOMPAT) {
++		for (i = 0; i < count; i++) {
++			outb_p(start + i,        dac_reg);
++			outb_p(entries[i].red,   dac_val);
++			outb_p(entries[i].green, dac_val);
++			outb_p(entries[i].blue,  dac_val);
++		}
++	}
++#ifdef CONFIG_X86_32
++	else if (par->pmi_setpal) {
++		__asm__ __volatile__(
++		"call *(%%esi)"
++		: /* no return value */
++		: "a" (0x4f09),         /* EAX */
++		  "b" (0),              /* EBX */
++		  "c" (count),          /* ECX */
++		  "d" (start),          /* EDX */
++		  "D" (entries),        /* EDI */
++		  "S" (&par->pmi_pal)); /* ESI */
++	}
++#endif
++	else {
++		task = uvesafb_prep();
++		if (!task)
++			return -ENOMEM;
++
++		task->t.regs.eax = 0x4f09;
++		task->t.regs.ebx = 0x0;
++		task->t.regs.ecx = count;
++		task->t.regs.edx = start;
++		task->t.flags = TF_BUF_ESDI;
++		task->t.buf_len = sizeof(struct uvesafb_pal_entry) * count;
++		task->buf = entries;
++
++		err = uvesafb_exec(task);
++		if ((task->t.regs.eax & 0xffff) != 0x004f)
++			err = 1;
++
++		uvesafb_free(task);
++	}
++	return err;
++}
++
++static int uvesafb_setcolreg(unsigned regno, unsigned red, unsigned green,
++		unsigned blue, unsigned transp,
++		struct fb_info *info)
++{
++	struct uvesafb_pal_entry entry;
++	int shift = 16 - info->var.green.length;
++	int err = 0;
++
++	if (regno >= info->cmap.len)
++		return -EINVAL;
++
++	if (info->var.bits_per_pixel == 8) {
++		entry.red   = red   >> shift;
++		entry.green = green >> shift;
++		entry.blue  = blue  >> shift;
++		entry.pad   = 0;
++
++		err = uvesafb_setpalette(&entry, 1, regno, info);
++	} else if (regno < 16) {
++		switch (info->var.bits_per_pixel) {
++		case 16:
++			if (info->var.red.offset == 10) {
++				/* 1:5:5:5 */
++				((u32 *) (info->pseudo_palette))[regno] =
++						((red   & 0xf800) >>  1) |
++						((green & 0xf800) >>  6) |
++						((blue  & 0xf800) >> 11);
++			} else {
++				/* 0:5:6:5 */
++				((u32 *) (info->pseudo_palette))[regno] =
++						((red   & 0xf800)      ) |
++						((green & 0xfc00) >>  5) |
++						((blue  & 0xf800) >> 11);
++			}
++			break;
++
++		case 24:
++		case 32:
++			red   >>= 8;
++			green >>= 8;
++			blue  >>= 8;
++			((u32 *)(info->pseudo_palette))[regno] =
++				(red   << info->var.red.offset)   |
++				(green << info->var.green.offset) |
++				(blue  << info->var.blue.offset);
++			break;
++		}
++	}
++	return err;
++}
++
++static int uvesafb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
++{
++	struct uvesafb_pal_entry *entries;
++	int shift = 16 - info->var.green.length;
++	int i, err = 0;
++
++	if (info->var.bits_per_pixel == 8) {
++		if (cmap->start + cmap->len > info->cmap.start +
++		    info->cmap.len || cmap->start < info->cmap.start)
++			return -EINVAL;
++
++		entries = kmalloc(sizeof(*entries) * cmap->len, GFP_KERNEL);
++		if (!entries)
++			return -ENOMEM;
++
++		for (i = 0; i < cmap->len; i++) {
++			entries[i].red   = cmap->red[i]   >> shift;
++			entries[i].green = cmap->green[i] >> shift;
++			entries[i].blue  = cmap->blue[i]  >> shift;
++			entries[i].pad   = 0;
++		}
++		err = uvesafb_setpalette(entries, cmap->len, cmap->start, info);
++		kfree(entries);
++	} else {
++		/*
++		 * For modes with bpp > 8, we only set the pseudo palette in
++		 * the fb_info struct. We rely on uvesafb_setcolreg to do all
++		 * sanity checking.
++		 */
++		for (i = 0; i < cmap->len; i++) {
++			err |= uvesafb_setcolreg(cmap->start + i, cmap->red[i],
++						cmap->green[i], cmap->blue[i],
++						0, info);
++		}
++	}
++	return err;
++}
++
++static int uvesafb_pan_display(struct fb_var_screeninfo *var,
++		struct fb_info *info)
++{
++#ifdef CONFIG_X86_32
++	int offset;
++	struct uvesafb_par *par = info->par;
++
++	offset = (var->yoffset * info->fix.line_length + var->xoffset) / 4;
++
++	/*
++	 * It turns out it's not the best idea to do panning via vm86,
++	 * so we only allow it if we have a PMI.
++	 */
++	if (par->pmi_start) {
++		__asm__ __volatile__(
++			"call *(%%edi)"
++			: /* no return value */
++			: "a" (0x4f07),         /* EAX */
++			  "b" (0),              /* EBX */
++			  "c" (offset),         /* ECX */
++			  "d" (offset >> 16),   /* EDX */
++			  "D" (&par->pmi_start));    /* EDI */
++	}
++#endif
++	return 0;
++}
++
++static int uvesafb_blank(int blank, struct fb_info *info)
++{
++	struct uvesafb_par *par = info->par;
++	struct uvesafb_ktask *task;
++	int err = 1;
++
++	if (par->vbe_ib.capabilities & VBE_CAP_VGACOMPAT) {
++		int loop = 10000;
++		u8 seq = 0, crtc17 = 0;
++
++		if (blank == FB_BLANK_POWERDOWN) {
++			seq = 0x20;
++			crtc17 = 0x00;
++			err = 0;
++		} else {
++			seq = 0x00;
++			crtc17 = 0x80;
++			err = (blank == FB_BLANK_UNBLANK) ? 0 : -EINVAL;
++		}
++
++		vga_wseq(NULL, 0x00, 0x01);
++		seq |= vga_rseq(NULL, 0x01) & ~0x20;
++		vga_wseq(NULL, 0x00, seq);
++
++		crtc17 |= vga_rcrt(NULL, 0x17) & ~0x80;
++		while (loop--);
++		vga_wcrt(NULL, 0x17, crtc17);
++		vga_wseq(NULL, 0x00, 0x03);
++	} else {
++		task = uvesafb_prep();
++		if (!task)
++			return -ENOMEM;
++
++		task->t.regs.eax = 0x4f10;
++		switch (blank) {
++		case FB_BLANK_UNBLANK:
++			task->t.regs.ebx = 0x0001;
++			break;
++		case FB_BLANK_NORMAL:
++			task->t.regs.ebx = 0x0101;	/* standby */
++			break;
++		case FB_BLANK_POWERDOWN:
++			task->t.regs.ebx = 0x0401;	/* powerdown */
++			break;
++		default:
++			goto out;
++		}
++
++		err = uvesafb_exec(task);
++		if (err || (task->t.regs.eax & 0xffff) != 0x004f)
++			err = 1;
++out:		uvesafb_free(task);
++	}
++	return err;
++}
++
++static int uvesafb_open(struct fb_info *info, int user)
++{
++	struct uvesafb_par *par = info->par;
++	int cnt = atomic_read(&par->ref_count);
++
++	if (!cnt && par->vbe_state_size)
++		par->vbe_state_orig = uvesafb_vbe_state_save(par);
++
++	atomic_inc(&par->ref_count);
++	return 0;
++}
++
++static int uvesafb_release(struct fb_info *info, int user)
++{
++	struct uvesafb_ktask *task = NULL;
++	struct uvesafb_par *par = info->par;
++	int cnt = atomic_read(&par->ref_count);
++
++	if (!cnt)
++		return -EINVAL;
++
++	if (cnt != 1)
++		goto out;
++
++	task = uvesafb_prep();
++	if (!task)
++		goto out;
++
++	/* First, try to set the standard 80x25 text mode. */
++	task->t.regs.eax = 0x0003;
++	uvesafb_exec(task);
++
++	/*
++	 * Now try to restore whatever hardware state we might have
++	 * saved when the fb device was first opened.
++	 */
++	uvesafb_vbe_state_restore(par, par->vbe_state_orig);
++out:
++	atomic_dec(&par->ref_count);
++	if (task)
++		uvesafb_free(task);
++	return 0;
++}
++
++static int uvesafb_set_par(struct fb_info *info)
++{
++	struct uvesafb_par *par = info->par;
++	struct uvesafb_ktask *task = NULL;
++	struct vbe_crtc_ib *crtc = NULL;
++	struct vbe_mode_ib *mode = NULL;
++	int i, err = 0, depth = info->var.bits_per_pixel;
++
++	if (depth > 8 && depth != 32)
++		depth = info->var.red.length + info->var.green.length +
++			info->var.blue.length;
++
++	i = uvesafb_vbe_find_mode(par, info->var.xres, info->var.yres, depth,
++				 UVESAFB_EXACT_RES | UVESAFB_EXACT_DEPTH);
++	if (i >= 0)
++		mode = &par->vbe_modes[i];
++	else
++		return -EINVAL;
++
++	task = uvesafb_prep();
++	if (!task)
++		return -ENOMEM;
++setmode:
++	task->t.regs.eax = 0x4f02;
++	task->t.regs.ebx = mode->mode_id | 0x4000;	/* use LFB */
++
++	if (par->vbe_ib.vbe_version >= 0x0300 && !par->nocrtc &&
++	    info->var.pixclock != 0) {
++		task->t.regs.ebx |= 0x0800;		/* use CRTC data */
++		task->t.flags = TF_BUF_ESDI;
++		crtc = kzalloc(sizeof(struct vbe_crtc_ib), GFP_KERNEL);
++		if (!crtc) {
++			err = -ENOMEM;
++			goto out;
++		}
++		crtc->horiz_start = info->var.xres + info->var.right_margin;
++		crtc->horiz_end	  = crtc->horiz_start + info->var.hsync_len;
++		crtc->horiz_total = crtc->horiz_end + info->var.left_margin;
++
++		crtc->vert_start  = info->var.yres + info->var.lower_margin;
++		crtc->vert_end    = crtc->vert_start + info->var.vsync_len;
++		crtc->vert_total  = crtc->vert_end + info->var.upper_margin;
++
++		crtc->pixel_clock = PICOS2KHZ(info->var.pixclock) * 1000;
++		crtc->refresh_rate = (u16)(100 * (crtc->pixel_clock /
++				(crtc->vert_total * crtc->horiz_total)));
++
++		if (info->var.vmode & FB_VMODE_DOUBLE)
++			crtc->flags |= 0x1;
++		if (info->var.vmode & FB_VMODE_INTERLACED)
++			crtc->flags |= 0x2;
++		if (!(info->var.sync & FB_SYNC_HOR_HIGH_ACT))
++			crtc->flags |= 0x4;
++		if (!(info->var.sync & FB_SYNC_VERT_HIGH_ACT))
++			crtc->flags |= 0x8;
++		memcpy(&par->crtc, crtc, sizeof(*crtc));
++	} else {
++		memset(&par->crtc, 0, sizeof(*crtc));
++	}
++
++	task->t.buf_len = sizeof(struct vbe_crtc_ib);
++	task->buf = &par->crtc;
++
++	err = uvesafb_exec(task);
++	if (err || (task->t.regs.eax & 0xffff) != 0x004f) {
++		/*
++		 * The mode switch might have failed because we tried to
++		 * use our own timings.  Try again with the default timings.
++		 */
++		if (crtc != NULL) {
++			printk(KERN_WARNING "uvesafb: mode switch failed "
++				"(eax=0x%x, err=%d). Trying again with "
++				"default timings.\n", task->t.regs.eax, err);
++			uvesafb_reset(task);
++			kfree(crtc);
++			crtc = NULL;
++			info->var.pixclock = 0;
++			goto setmode;
++		} else {
++			printk(KERN_ERR "uvesafb: mode switch failed (eax="
++				"0x%x, err=%d)\n", task->t.regs.eax, err);
++			err = -EINVAL;
++			goto out;
++		}
++	}
++	par->mode_idx = i;
++
++	/* For 8bpp modes, always try to set the DAC to 8 bits. */
++	if (par->vbe_ib.capabilities & VBE_CAP_CAN_SWITCH_DAC &&
++	    mode->bits_per_pixel <= 8) {
++		uvesafb_reset(task);
++		task->t.regs.eax = 0x4f08;
++		task->t.regs.ebx = 0x0800;
++
++		err = uvesafb_exec(task);
++		if (err || (task->t.regs.eax & 0xffff) != 0x004f ||
++		    ((task->t.regs.ebx & 0xff00) >> 8) != 8) {
++			/*
++			 * We've failed to set the DAC palette format -
++			 * time to correct var.
++			 */
++			info->var.red.length    = 6;
++			info->var.green.length  = 6;
++			info->var.blue.length   = 6;
++		}
++	}
++
++	info->fix.visual = (info->var.bits_per_pixel == 8) ?
++				FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
++	info->fix.line_length = mode->bytes_per_scan_line;
++
++out:	if (crtc != NULL)
++		kfree(crtc);
++	uvesafb_free(task);
++
++	return err;
++}
++
++static void uvesafb_check_limits(struct fb_var_screeninfo *var,
++		struct fb_info *info)
++{
++	const struct fb_videomode *mode;
++	struct uvesafb_par *par = info->par;
++
++	/*
++	 * If pixclock is set to 0, then we're using default BIOS timings
++	 * and thus don't have to perform any checks here.
++	 */
++	if (!var->pixclock)
++		return;
++
++	if (par->vbe_ib.vbe_version < 0x0300) {
++		fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60, var, info);
++		return;
++	}
++
++	if (!fb_validate_mode(var, info))
++		return;
++
++	mode = fb_find_best_mode(var, &info->modelist);
++	if (mode) {
++		if (mode->xres == var->xres && mode->yres == var->yres &&
++		    !(mode->vmode & (FB_VMODE_INTERLACED | FB_VMODE_DOUBLE))) {
++			fb_videomode_to_var(var, mode);
++			return;
++		}
++	}
++
++	if (info->monspecs.gtf && !fb_get_mode(FB_MAXTIMINGS, 0, var, info))
++		return;
++	/* Use default refresh rate */
++	var->pixclock = 0;
++}
++
++static int uvesafb_check_var(struct fb_var_screeninfo *var,
++		struct fb_info *info)
++{
++	struct uvesafb_par *par = info->par;
++	struct vbe_mode_ib *mode = NULL;
++	int match = -1;
++	int depth = var->red.length + var->green.length + var->blue.length;
++
++	/*
++	 * Various apps will use bits_per_pixel to set the color depth,
++	 * which is theoretically incorrect, but which we'll try to handle
++	 * here.
++	 */
++	if (depth == 0 || abs(depth - var->bits_per_pixel) >= 8)
++		depth = var->bits_per_pixel;
++
++	match = uvesafb_vbe_find_mode(par, var->xres, var->yres, depth,
++						UVESAFB_EXACT_RES);
++	if (match == -1)
++		return -EINVAL;
++
++	mode = &par->vbe_modes[match];
++	uvesafb_setup_var(var, info, mode);
++
++	/*
++	 * Check whether we have remapped enough memory for this mode.
++	 * We might be called at an early stage, when we haven't remapped
++	 * any memory yet, in which case we simply skip the check.
++	 */
++	if (var->yres * mode->bytes_per_scan_line > info->fix.smem_len
++						&& info->fix.smem_len)
++		return -EINVAL;
++
++	if ((var->vmode & FB_VMODE_DOUBLE) &&
++				!(par->vbe_modes[match].mode_attr & 0x100))
++		var->vmode &= ~FB_VMODE_DOUBLE;
++
++	if ((var->vmode & FB_VMODE_INTERLACED) &&
++				!(par->vbe_modes[match].mode_attr & 0x200))
++		var->vmode &= ~FB_VMODE_INTERLACED;
++
++	uvesafb_check_limits(var, info);
++
++	var->xres_virtual = var->xres;
++	var->yres_virtual = (par->ypan) ?
++				info->fix.smem_len / mode->bytes_per_scan_line :
++				var->yres;
++	return 0;
++}
++
++static void uvesafb_save_state(struct fb_info *info)
++{
++	struct uvesafb_par *par = info->par;
++
++	if (par->vbe_state_saved)
++		kfree(par->vbe_state_saved);
++
++	par->vbe_state_saved = uvesafb_vbe_state_save(par);
++}
++
++static void uvesafb_restore_state(struct fb_info *info)
++{
++	struct uvesafb_par *par = info->par;
++
++	uvesafb_vbe_state_restore(par, par->vbe_state_saved);
++}
++
++static struct fb_ops uvesafb_ops = {
++	.owner		= THIS_MODULE,
++	.fb_open	= uvesafb_open,
++	.fb_release	= uvesafb_release,
++	.fb_setcolreg	= uvesafb_setcolreg,
++	.fb_setcmap	= uvesafb_setcmap,
++	.fb_pan_display	= uvesafb_pan_display,
++	.fb_blank	= uvesafb_blank,
++	.fb_fillrect	= cfb_fillrect,
++	.fb_copyarea	= cfb_copyarea,
++	.fb_imageblit	= cfb_imageblit,
++	.fb_check_var	= uvesafb_check_var,
++	.fb_set_par	= uvesafb_set_par,
++	.fb_save_state	= uvesafb_save_state,
++	.fb_restore_state = uvesafb_restore_state,
++};
++
++static void __devinit uvesafb_init_info(struct fb_info *info,
++		struct vbe_mode_ib *mode)
++{
++	unsigned int size_vmode;
++	unsigned int size_remap;
++	unsigned int size_total;
++	struct uvesafb_par *par = info->par;
++	int i, h;
++
++	info->pseudo_palette = ((u8 *)info->par + sizeof(struct uvesafb_par));
++	info->fix = uvesafb_fix;
++	info->fix.ypanstep = par->ypan ? 1 : 0;
++	info->fix.ywrapstep = (par->ypan > 1) ? 1 : 0;
++
++	/*
++	 * If we were unable to get the state buffer size, disable
++	 * functions for saving and restoring the hardware state.
++	 */
++	if (par->vbe_state_size == 0) {
++		info->fbops->fb_save_state = NULL;
++		info->fbops->fb_restore_state = NULL;
++	}
++
++	/* Disable blanking if the user requested so. */
++	if (!blank)
++		info->fbops->fb_blank = NULL;
++
++	/*
++	 * Find out how much IO memory is required for the mode with
++	 * the highest resolution.
++	 */
++	size_remap = 0;
++	for (i = 0; i < par->vbe_modes_cnt; i++) {
++		h = par->vbe_modes[i].bytes_per_scan_line *
++					par->vbe_modes[i].y_res;
++		if (h > size_remap)
++			size_remap = h;
++	}
++	size_remap *= 2;
++
++	/*
++	 *   size_vmode -- that is the amount of memory needed for the
++	 *                 used video mode, i.e. the minimum amount of
++	 *                 memory we need.
++	 */
++	if (mode != NULL) {
++		size_vmode = info->var.yres * mode->bytes_per_scan_line;
++	} else {
++		size_vmode = info->var.yres * info->var.xres *
++			     ((info->var.bits_per_pixel + 7) >> 3);
++	}
++
++	/*
++	 *   size_total -- all video memory we have. Used for mtrr
++	 *                 entries, resource allocation and bounds
++	 *                 checking.
++	 */
++	size_total = par->vbe_ib.total_memory * 65536;
++	if (vram_total)
++		size_total = vram_total * 1024 * 1024;
++	if (size_total < size_vmode)
++		size_total = size_vmode;
++
++	/*
++	 *   size_remap -- the amount of video memory we are going to
++	 *                 use for vesafb.  With modern cards it is no
++	 *                 option to simply use size_total as th
++	 *                 wastes plenty of kernel address space.
++	 */
++	if (vram_remap)
++		size_remap = vram_remap * 1024 * 1024;
++	if (size_remap < size_vmode)
++		size_remap = size_vmode;
++	if (size_remap > size_total)
++		size_remap = size_total;
++
++	info->fix.smem_len = size_remap;
++	info->fix.smem_start = mode->phys_base_ptr;
++
++	/*
++	 * We have to set yres_virtual here because when setup_var() was
++	 * called, smem_len wasn't defined yet.
++	 */
++	info->var.yres_virtual = info->fix.smem_len /
++				 mode->bytes_per_scan_line;
++
++	if (par->ypan && info->var.yres_virtual > info->var.yres) {
++		printk(KERN_INFO "uvesafb: scrolling: %s "
++			"using protected mode interface, "
++			"yres_virtual=%d\n",
++			(par->ypan > 1) ? "ywrap" : "ypan",
++			info->var.yres_virtual);
++	} else {
++		printk(KERN_INFO "uvesafb: scrolling: redraw\n");
++		info->var.yres_virtual = info->var.yres;
++		par->ypan = 0;
++	}
++
++	info->flags = FBINFO_FLAG_DEFAULT |
++			(par->ypan) ? FBINFO_HWACCEL_YPAN : 0;
++
++	if (!par->ypan)
++		info->fbops->fb_pan_display = NULL;
++}
++
++static void uvesafb_init_mtrr(struct fb_info *info)
++{
++#ifdef CONFIG_MTRR
++	if (mtrr && !(info->fix.smem_start & (PAGE_SIZE - 1))) {
++		int temp_size = info->fix.smem_len;
++		unsigned int type = 0;
++
++		switch (mtrr) {
++		case 1:
++			type = MTRR_TYPE_UNCACHABLE;
++			break;
++		case 2:
++			type = MTRR_TYPE_WRBACK;
++			break;
++		case 3:
++			type = MTRR_TYPE_WRCOMB;
++			break;
++		case 4:
++			type = MTRR_TYPE_WRTHROUGH;
++			break;
++		default:
++			type = 0;
++			break;
++		}
++
++		if (type) {
++			int rc;
++
++			/* Find the largest power-of-two */
++			while (temp_size & (temp_size - 1))
++				temp_size &= (temp_size - 1);
++
++			/* Try and find a power of two to add */
++			do {
++				rc = mtrr_add(info->fix.smem_start,
++					      temp_size, type, 1);
++				temp_size >>= 1;
++			} while (temp_size >= PAGE_SIZE && rc == -EINVAL);
++		}
++	}
++#endif /* CONFIG_MTRR */
++}
++
++
++static ssize_t uvesafb_show_vbe_ver(struct device *dev,
++		struct device_attribute *attr, char *buf)
++{
++	struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
++	struct uvesafb_par *par = info->par;
++
++	return snprintf(buf, PAGE_SIZE, "%.4x\n", par->vbe_ib.vbe_version);
++}
++
++static DEVICE_ATTR(vbe_version, S_IRUGO, uvesafb_show_vbe_ver, NULL);
++
++static ssize_t uvesafb_show_vbe_modes(struct device *dev,
++		struct device_attribute *attr, char *buf)
++{
++	struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
++	struct uvesafb_par *par = info->par;
++	int ret = 0, i;
++
++	for (i = 0; i < par->vbe_modes_cnt && ret < PAGE_SIZE; i++) {
++		ret += snprintf(buf + ret, PAGE_SIZE - ret,
++			"%dx%d-%d, 0x%.4x\n",
++			par->vbe_modes[i].x_res, par->vbe_modes[i].y_res,
++			par->vbe_modes[i].depth, par->vbe_modes[i].mode_id);
++	}
++
++	return ret;
++}
++
++static DEVICE_ATTR(vbe_modes, S_IRUGO, uvesafb_show_vbe_modes, NULL);
++
++static ssize_t uvesafb_show_vendor(struct device *dev,
++		struct device_attribute *attr, char *buf)
++{
++	struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
++	struct uvesafb_par *par = info->par;
++
++	if (par->vbe_ib.oem_vendor_name_ptr)
++		return snprintf(buf, PAGE_SIZE, "%s\n", (char *)
++			(&par->vbe_ib) + par->vbe_ib.oem_vendor_name_ptr);
++	else
++		return 0;
++}
++
++static DEVICE_ATTR(oem_vendor, S_IRUGO, uvesafb_show_vendor, NULL);
++
++static ssize_t uvesafb_show_product_name(struct device *dev,
++		struct device_attribute *attr, char *buf)
++{
++	struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
++	struct uvesafb_par *par = info->par;
++
++	if (par->vbe_ib.oem_product_name_ptr)
++		return snprintf(buf, PAGE_SIZE, "%s\n", (char *)
++			(&par->vbe_ib) + par->vbe_ib.oem_product_name_ptr);
++	else
++		return 0;
++}
++
++static DEVICE_ATTR(oem_product_name, S_IRUGO, uvesafb_show_product_name, NULL);
++
++static ssize_t uvesafb_show_product_rev(struct device *dev,
++		struct device_attribute *attr, char *buf)
++{
++	struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
++	struct uvesafb_par *par = info->par;
++
++	if (par->vbe_ib.oem_product_rev_ptr)
++		return snprintf(buf, PAGE_SIZE, "%s\n", (char *)
++			(&par->vbe_ib) + par->vbe_ib.oem_product_rev_ptr);
++	else
++		return 0;
++}
++
++static DEVICE_ATTR(oem_product_rev, S_IRUGO, uvesafb_show_product_rev, NULL);
++
++static ssize_t uvesafb_show_oem_string(struct device *dev,
++		struct device_attribute *attr, char *buf)
++{
++	struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
++	struct uvesafb_par *par = info->par;
++
++	if (par->vbe_ib.oem_string_ptr)
++		return snprintf(buf, PAGE_SIZE, "%s\n",
++			(char *)(&par->vbe_ib) + par->vbe_ib.oem_string_ptr);
++	else
++		return 0;
++}
++
++static DEVICE_ATTR(oem_string, S_IRUGO, uvesafb_show_oem_string, NULL);
++
++static ssize_t uvesafb_show_nocrtc(struct device *dev,
++		struct device_attribute *attr, char *buf)
++{
++	struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
++	struct uvesafb_par *par = info->par;
++
++	return snprintf(buf, PAGE_SIZE, "%d\n", par->nocrtc);
++}
++
++static ssize_t uvesafb_store_nocrtc(struct device *dev,
++		struct device_attribute *attr, const char *buf, size_t count)
++{
++	struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
++	struct uvesafb_par *par = info->par;
++
++	if (count > 0) {
++		if (buf[0] == '0')
++			par->nocrtc = 0;
++		else
++			par->nocrtc = 1;
++	}
++	return count;
++}
++
++static DEVICE_ATTR(nocrtc, S_IRUGO | S_IWUSR, uvesafb_show_nocrtc,
++			uvesafb_store_nocrtc);
++
++static struct attribute *uvesafb_dev_attrs[] = {
++	&dev_attr_vbe_version.attr,
++	&dev_attr_vbe_modes.attr,
++	&dev_attr_oem_vendor.attr,
++	&dev_attr_oem_product_name.attr,
++	&dev_attr_oem_product_rev.attr,
++	&dev_attr_oem_string.attr,
++	&dev_attr_nocrtc.attr,
++	NULL,
++};
++
++static struct attribute_group uvesafb_dev_attgrp = {
++	.name = NULL,
++	.attrs = uvesafb_dev_attrs,
++};
++
++static int __devinit uvesafb_probe(struct platform_device *dev)
++{
++	struct fb_info *info;
++	struct vbe_mode_ib *mode = NULL;
++	struct uvesafb_par *par;
++	int err = 0, i;
++
++	info = framebuffer_alloc(sizeof(*par) +	sizeof(u32) * 256, &dev->dev);
++	if (!info)
++		return -ENOMEM;
++
++	par = info->par;
++
++	err = uvesafb_vbe_init(info);
++	if (err) {
++		printk(KERN_ERR "uvesafb: vbe_init() failed with %d\n", err);
++		goto out;
++	}
++
++	info->fbops = &uvesafb_ops;
++
++	i = uvesafb_vbe_init_mode(info);
++	if (i < 0) {
++		err = -EINVAL;
++		goto out;
++	} else {
++		mode = &par->vbe_modes[i];
++	}
++
++	if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
++		err = -ENXIO;
++		goto out;
++	}
++
++	uvesafb_init_info(info, mode);
++
++	if (!request_mem_region(info->fix.smem_start, info->fix.smem_len,
++				"uvesafb")) {
++		printk(KERN_ERR "uvesafb: cannot reserve video memory at "
++				"0x%lx\n", info->fix.smem_start);
++		err = -EIO;
++		goto out_mode;
++	}
++
++	info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len);
++
++	if (!info->screen_base) {
++		printk(KERN_ERR
++			"uvesafb: abort, cannot ioremap 0x%x bytes of video "
++			"memory at 0x%lx\n",
++			info->fix.smem_len, info->fix.smem_start);
++		err = -EIO;
++		goto out_mem;
++	}
++
++	if (!request_region(0x3c0, 32, "uvesafb")) {
++		printk(KERN_ERR "uvesafb: request region 0x3c0-0x3e0 failed\n");
++		err = -EIO;
++		goto out_unmap;
++	}
++
++	uvesafb_init_mtrr(info);
++	platform_set_drvdata(dev, info);
++
++	if (register_framebuffer(info) < 0) {
++		printk(KERN_ERR
++			"uvesafb: failed to register framebuffer device\n");
++		err = -EINVAL;
++		goto out_reg;
++	}
++
++	printk(KERN_INFO "uvesafb: framebuffer at 0x%lx, mapped to 0x%p, "
++			"using %dk, total %dk\n", info->fix.smem_start,
++			info->screen_base, info->fix.smem_len/1024,
++			par->vbe_ib.total_memory * 64);
++	printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node,
++			info->fix.id);
++
++	err = sysfs_create_group(&dev->dev.kobj, &uvesafb_dev_attgrp);
++	if (err != 0)
++		printk(KERN_WARNING "fb%d: failed to register attributes\n",
++			info->node);
++
++	return 0;
++
++out_reg:
++	release_region(0x3c0, 32);
++out_unmap:
++	iounmap(info->screen_base);
++out_mem:
++	release_mem_region(info->fix.smem_start, info->fix.smem_len);
++out_mode:
++	if (!list_empty(&info->modelist))
++		fb_destroy_modelist(&info->modelist);
++	fb_destroy_modedb(info->monspecs.modedb);
++	fb_dealloc_cmap(&info->cmap);
++out:
++	if (par->vbe_modes)
++		kfree(par->vbe_modes);
++
++	framebuffer_release(info);
++	return err;
++}
++
++static int uvesafb_remove(struct platform_device *dev)
++{
++	struct fb_info *info = platform_get_drvdata(dev);
++
++	if (info) {
++		struct uvesafb_par *par = info->par;
++
++		sysfs_remove_group(&dev->dev.kobj, &uvesafb_dev_attgrp);
++		unregister_framebuffer(info);
++		release_region(0x3c0, 32);
++		iounmap(info->screen_base);
++		release_mem_region(info->fix.smem_start, info->fix.smem_len);
++		fb_destroy_modedb(info->monspecs.modedb);
++		fb_dealloc_cmap(&info->cmap);
++
++		if (par) {
++			if (par->vbe_modes)
++				kfree(par->vbe_modes);
++			if (par->vbe_state_orig)
++				kfree(par->vbe_state_orig);
++			if (par->vbe_state_saved)
++				kfree(par->vbe_state_saved);
++		}
++
++		framebuffer_release(info);
++	}
++	return 0;
++}
++
++static struct platform_driver uvesafb_driver = {
++	.probe  = uvesafb_probe,
++	.remove = uvesafb_remove,
++	.driver = {
++		.name = "uvesafb",
++	},
++};
++
++static struct platform_device *uvesafb_device;
++
++#ifndef MODULE
++static int __devinit uvesafb_setup(char *options)
++{
++	char *this_opt;
++
++	if (!options || !*options)
++		return 0;
++
++	while ((this_opt = strsep(&options, ",")) != NULL) {
++		if (!*this_opt) continue;
++
++		if (!strcmp(this_opt, "redraw"))
++			ypan = 0;
++		else if (!strcmp(this_opt, "ypan"))
++			ypan = 1;
++		else if (!strcmp(this_opt, "ywrap"))
++			ypan = 2;
++		else if (!strcmp(this_opt, "vgapal"))
++			pmi_setpal = 0;
++		else if (!strcmp(this_opt, "pmipal"))
++			pmi_setpal = 1;
++		else if (!strncmp(this_opt, "mtrr:", 5))
++			mtrr = simple_strtoul(this_opt+5, NULL, 0);
++		else if (!strcmp(this_opt, "nomtrr"))
++			mtrr = 0;
++		else if (!strcmp(this_opt, "nocrtc"))
++			nocrtc = 1;
++		else if (!strcmp(this_opt, "noedid"))
++			noedid = 1;
++		else if (!strcmp(this_opt, "noblank"))
++			blank = 0;
++		else if (!strncmp(this_opt, "vtotal:", 7))
++			vram_total = simple_strtoul(this_opt + 7, NULL, 0);
++		else if (!strncmp(this_opt, "vremap:", 7))
++			vram_remap = simple_strtoul(this_opt + 7, NULL, 0);
++		else if (!strncmp(this_opt, "maxhf:", 6))
++			maxhf = simple_strtoul(this_opt + 6, NULL, 0);
++		else if (!strncmp(this_opt, "maxvf:", 6))
++			maxvf = simple_strtoul(this_opt + 6, NULL, 0);
++		else if (!strncmp(this_opt, "maxclk:", 7))
++			maxclk = simple_strtoul(this_opt + 7, NULL, 0);
++		else if (!strncmp(this_opt, "vbemode:", 8))
++			vbemode = simple_strtoul(this_opt + 8, NULL, 0);
++		else if (this_opt[0] >= '0' && this_opt[0] <= '9') {
++			mode_option = this_opt;
++		} else {
++			printk(KERN_WARNING
++				"uvesafb: unrecognized option %s\n", this_opt);
++		}
++	}
++
++	return 0;
++}
++#endif /* !MODULE */
++
++static ssize_t show_v86d(struct device_driver *dev, char *buf)
++{
++	return snprintf(buf, PAGE_SIZE, "%s\n", v86d_path);
++}
++
++static ssize_t store_v86d(struct device_driver *dev, const char *buf,
++		size_t count)
++{
++	strncpy(v86d_path, buf, PATH_MAX);
++	return count;
++}
++
++static DRIVER_ATTR(v86d, S_IRUGO | S_IWUSR, show_v86d, store_v86d);
++
++static int __devinit uvesafb_init(void)
++{
++	int err;
++
++#ifndef MODULE
++	char *option = NULL;
++
++	if (fb_get_options("uvesafb", &option))
++		return -ENODEV;
++	uvesafb_setup(option);
++#endif
++	err = cn_add_callback(&uvesafb_cn_id, "uvesafb", uvesafb_cn_callback);
++	if (err)
++		return err;
++
++	err = platform_driver_register(&uvesafb_driver);
++
++	if (!err) {
++		uvesafb_device = platform_device_alloc("uvesafb", 0);
++		if (uvesafb_device)
++			err = platform_device_add(uvesafb_device);
++		else
++			err = -ENOMEM;
++
++		if (err) {
++			platform_device_put(uvesafb_device);
++			platform_driver_unregister(&uvesafb_driver);
++			cn_del_callback(&uvesafb_cn_id);
++			return err;
++		}
++
++		err = driver_create_file(&uvesafb_driver.driver,
++				&driver_attr_v86d);
++		if (err) {
++			printk(KERN_WARNING "uvesafb: failed to register "
++					"attributes\n");
++			err = 0;
++		}
++	}
++	return err;
++}
++
++module_init(uvesafb_init);
++
++static void __devexit uvesafb_exit(void)
++{
++	struct uvesafb_ktask *task;
++
++	if (v86d_started) {
++		task = uvesafb_prep();
++		if (task) {
++			task->t.flags = TF_EXIT;
++			uvesafb_exec(task);
++			uvesafb_free(task);
++		}
++	}
++
++	cn_del_callback(&uvesafb_cn_id);
++	driver_remove_file(&uvesafb_driver.driver, &driver_attr_v86d);
++	platform_device_unregister(uvesafb_device);
++	platform_driver_unregister(&uvesafb_driver);
++}
++
++module_exit(uvesafb_exit);
++
++static inline int param_get_scroll(char *buffer, struct kernel_param *kp)
++{
++	return 0;
++}
++
++static inline int param_set_scroll(const char *val, struct kernel_param *kp)
++{
++	ypan = 0;
++
++	if (!strcmp(val, "redraw"))
++		ypan = 0;
++	else if (!strcmp(val, "ypan"))
++		ypan = 1;
++	else if (!strcmp(val, "ywrap"))
++		ypan = 2;
++
++	return 0;
++}
++
++#define param_check_scroll(name, p) __param_check(name, p, void);
++
++module_param_named(scroll, ypan, scroll, 0);
++MODULE_PARM_DESC(scroll,
++	"Scrolling mode, set to 'redraw', ''ypan' or 'ywrap'");
++module_param_named(vgapal, pmi_setpal, invbool, 0);
++MODULE_PARM_DESC(vgapal, "Set palette using VGA registers");
++module_param_named(pmipal, pmi_setpal, bool, 0);
++MODULE_PARM_DESC(pmipal, "Set palette using PMI calls");
++module_param(mtrr, uint, 0);
++MODULE_PARM_DESC(mtrr,
++	"Memory Type Range Registers setting. Use 0 to disable.");
++module_param(blank, bool, 0);
++MODULE_PARM_DESC(blank, "Enable hardware blanking");
++module_param(nocrtc, bool, 0);
++MODULE_PARM_DESC(nocrtc, "Ignore CRTC timings when setting modes");
++module_param(noedid, bool, 0);
++MODULE_PARM_DESC(noedid,
++	"Ignore EDID-provided monitor limits when setting modes");
++module_param(vram_remap, uint, 0);
++MODULE_PARM_DESC(vram_remap, "Set amount of video memory to be used [MiB]");
++module_param(vram_total, uint, 0);
++MODULE_PARM_DESC(vram_total, "Set total amount of video memoery [MiB]");
++module_param(maxclk, ushort, 0);
++MODULE_PARM_DESC(maxclk, "Maximum pixelclock [MHz], overrides EDID data");
++module_param(maxhf, ushort, 0);
++MODULE_PARM_DESC(maxhf,
++	"Maximum horizontal frequency [kHz], overrides EDID data");
++module_param(maxvf, ushort, 0);
++MODULE_PARM_DESC(maxvf,
++	"Maximum vertical frequency [Hz], overrides EDID data");
++module_param_named(mode, mode_option, charp, 0);
++MODULE_PARM_DESC(mode,
++	"Specify initial video mode as \"<xres>x<yres>[-<bpp>][@<refresh>]\"");
++module_param(vbemode, ushort, 0);
++MODULE_PARM_DESC(vbemode,
++	"VBE mode number to set, overrides the 'mode' option");
++module_param_string(v86d, v86d_path, PATH_MAX, 0660);
++MODULE_PARM_DESC(v86d, "Path to the v86d userspace helper.");
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Michal Januszewski <spock@gentoo.org>");
++MODULE_DESCRIPTION("Framebuffer driver for VBE2.0+ compliant graphics boards");
++
+Index: linux-2.6.22/include/linux/connector.h
+===================================================================
+--- linux-2.6.22.orig/include/linux/connector.h	2007-08-28 21:54:13.000000000 +0100
++++ linux-2.6.22/include/linux/connector.h	2007-08-28 21:56:34.000000000 +0100
+@@ -36,14 +36,15 @@
+ #define CN_VAL_CIFS                     0x1
+ #define CN_W1_IDX			0x3	/* w1 communication */
+ #define CN_W1_VAL			0x1
++#define CN_IDX_V86D			0x4
++#define CN_VAL_V86D_UVESAFB		0x1
+ 
+-
+-#define CN_NETLINK_USERS		4
++#define CN_NETLINK_USERS		5
+ 
+ /*
+  * Maximum connector's message size.
+  */
+-#define CONNECTOR_MAX_MSG_SIZE 	1024
++#define CONNECTOR_MAX_MSG_SIZE	16384
+ 
+ /*
+  * idx and val are unique identifiers which 
+Index: linux-2.6.22/include/video/Kbuild
+===================================================================
+--- linux-2.6.22.orig/include/video/Kbuild	2007-08-28 21:54:13.000000000 +0100
++++ linux-2.6.22/include/video/Kbuild	2007-08-28 21:56:34.000000000 +0100
+@@ -1 +1 @@
+-unifdef-y += sisfb.h
++unifdef-y += sisfb.h uvesafb.h
+Index: linux-2.6.22/include/video/uvesafb.h
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.22/include/video/uvesafb.h	2007-08-28 21:56:34.000000000 +0100
+@@ -0,0 +1,193 @@
++#ifndef _UVESAFB_H
++#define _UVESAFB_H
++
++struct v86_regs {
++	__u32 ebx;
++	__u32 ecx;
++	__u32 edx;
++	__u32 esi;
++	__u32 edi;
++	__u32 ebp;
++	__u32 eax;
++	__u32 eip;
++	__u32 eflags;
++	__u32 esp;
++	__u16 cs;
++	__u16 ss;
++	__u16 es;
++	__u16 ds;
++	__u16 fs;
++	__u16 gs;
++};
++
++/* Task flags */
++#define TF_VBEIB	0x01
++#define TF_BUF_ESDI	0x02
++#define TF_BUF_ESBX	0x04
++#define TF_BUF_RET	0x08
++#define TF_EXIT		0x10
++
++struct uvesafb_task {
++	__u8 flags;
++	int buf_len;
++	struct v86_regs regs;
++};
++
++/* Constants for the capabilities field
++ * in vbe_ib */
++#define VBE_CAP_CAN_SWITCH_DAC	0x01
++#define VBE_CAP_VGACOMPAT	0x02
++
++/* The VBE Info Block */
++struct vbe_ib {
++	char  vbe_signature[4];
++	__u16 vbe_version;
++	__u32 oem_string_ptr;
++	__u32 capabilities;
++	__u32 mode_list_ptr;
++	__u16 total_memory;
++	__u16 oem_software_rev;
++	__u32 oem_vendor_name_ptr;
++	__u32 oem_product_name_ptr;
++	__u32 oem_product_rev_ptr;
++	__u8  reserved[222];
++	char  oem_data[256];
++	char  misc_data[512];
++} __attribute__ ((packed));
++
++#ifdef __KERNEL__
++
++/* VBE CRTC Info Block */
++struct vbe_crtc_ib {
++	u16 horiz_total;
++	u16 horiz_start;
++	u16 horiz_end;
++	u16 vert_total;
++	u16 vert_start;
++	u16 vert_end;
++	u8  flags;
++	u32 pixel_clock;
++	u16 refresh_rate;
++	u8  reserved[40];
++} __attribute__ ((packed));
++
++#define VBE_MODE_VGACOMPAT	0x20
++#define VBE_MODE_COLOR		0x08
++#define VBE_MODE_SUPPORTEDHW	0x01
++#define VBE_MODE_GRAPHICS	0x10
++#define VBE_MODE_LFB		0x80
++
++#define VBE_MODE_MASK		(VBE_MODE_COLOR | VBE_MODE_SUPPORTEDHW | \
++				VBE_MODE_GRAPHICS | VBE_MODE_LFB)
++
++/* VBE Mode Info Block */
++struct vbe_mode_ib {
++	/* for all VBE revisions */
++	u16 mode_attr;
++	u8  winA_attr;
++	u8  winB_attr;
++	u16 win_granularity;
++	u16 win_size;
++	u16 winA_seg;
++	u16 winB_seg;
++	u32 win_func_ptr;
++	u16 bytes_per_scan_line;
++
++	/* for VBE 1.2+ */
++	u16 x_res;
++	u16 y_res;
++	u8  x_char_size;
++	u8  y_char_size;
++	u8  planes;
++	u8  bits_per_pixel;
++	u8  banks;
++	u8  memory_model;
++	u8  bank_size;
++	u8  image_pages;
++	u8  reserved1;
++
++	/* Direct color fields for direct/6 and YUV/7 memory models. */
++	/* Offsets are bit positions of lsb in the mask. */
++	u8  red_len;
++	u8  red_off;
++	u8  green_len;
++	u8  green_off;
++	u8  blue_len;
++	u8  blue_off;
++	u8  rsvd_len;
++	u8  rsvd_off;
++	u8  direct_color_info;	/* direct color mode attributes */
++
++	/* for VBE 2.0+ */
++	u32 phys_base_ptr;
++	u8  reserved2[6];
++
++	/* for VBE 3.0+ */
++	u16 lin_bytes_per_scan_line;
++	u8  bnk_image_pages;
++	u8  lin_image_pages;
++	u8  lin_red_len;
++	u8  lin_red_off;
++	u8  lin_green_len;
++	u8  lin_green_off;
++	u8  lin_blue_len;
++	u8  lin_blue_off;
++	u8  lin_rsvd_len;
++	u8  lin_rsvd_off;
++	u32 max_pixel_clock;
++	u16 mode_id;
++	u8  depth;
++} __attribute__ ((packed));
++
++#define UVESAFB_DEFAULT_MODE "640x480-16"
++
++/* How long to wait for a reply from userspace [ms] */
++#define UVESAFB_TIMEOUT 5000
++
++/* Max number of concurrent tasks */
++#define UVESAFB_TASKS_MAX 16
++
++#define dac_reg	(0x3c8)
++#define dac_val	(0x3c9)
++
++struct uvesafb_pal_entry {
++	u_char blue, green, red, pad;
++} __attribute__ ((packed));
++
++struct uvesafb_ktask {
++	struct uvesafb_task t;
++	void *buf;
++	struct completion *done;
++	u32 ack;
++};
++
++static int uvesafb_exec(struct uvesafb_ktask *tsk);
++
++#define UVESAFB_EXACT_RES	1
++#define UVESAFB_EXACT_DEPTH	2
++
++struct uvesafb_par {
++	struct vbe_ib vbe_ib;		/* VBE Info Block */
++	struct vbe_mode_ib *vbe_modes;	/* list of supported VBE modes */
++	int vbe_modes_cnt;
++
++	u8 nocrtc;
++	u8 ypan;			/* 0 - nothing, 1 - ypan, 2 - ywrap */
++	u8 pmi_setpal;			/* PMI for palette changes */
++	u16 *pmi_base;			/* protected mode interface location */
++	void *pmi_start;
++	void *pmi_pal;
++	u8 *vbe_state_orig;		/*
++					 * original hardware state, before the
++					 * driver was loaded
++					 */
++	u8 *vbe_state_saved;		/* state saved by fb_save_state */
++	int vbe_state_size;
++	atomic_t ref_count;
++
++	int mode_idx;
++	struct vbe_crtc_ib crtc;
++};
++
++#endif /* __KERNEL__ */
++#endif /* _UVESAFB_H */
-- 
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