Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1669 insertions, 0 deletions

diff --git a/drivers/video/fbdev/intelfb/intelfbdrv.c b/drivers/video/fbdev/intelfb/intelfbdrv.c
new file mode 100644
index 000000000..d7463a2a5
--- /dev/null
+++ b/drivers/video/fbdev/intelfb/intelfbdrv.c
@@ -0,0 +1,1669 @@
+/*
+ * intelfb
+ *
+ * Linux framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G/915GM/
+ * 945G/945GM/945GME/965G/965GM integrated graphics chips.
+ *
+ * Copyright © 2002, 2003 David Dawes <dawes@xfree86.org>
+ *                   2004 Sylvain Meyer
+ *                   2006 David Airlie
+ *
+ * This driver consists of two parts.  The first part (intelfbdrv.c) provides
+ * the basic fbdev interfaces, is derived in part from the radeonfb and
+ * vesafb drivers, and is covered by the GPL.  The second part (intelfbhw.c)
+ * provides the code to program the hardware.  Most of it is derived from
+ * the i810/i830 XFree86 driver.  The HW-specific code is covered here
+ * under a dual license (GPL and MIT/XFree86 license).
+ *
+ * Author: David Dawes
+ *
+ */
+
+/* $DHD: intelfb/intelfbdrv.c,v 1.20 2003/06/27 15:17:40 dawes Exp $ */
+
+/*
+ * Changes:
+ *    01/2003 - Initial driver (0.1.0), no mode switching, no acceleration.
+ *		This initial version is a basic core that works a lot like
+ *		the vesafb driver.  It must be built-in to the kernel,
+ *		and the initial video mode must be set with vga=XXX at
+ *		boot time.  (David Dawes)
+ *
+ *    01/2003 - Version 0.2.0: Mode switching added, colormap support
+ *		implemented, Y panning, and soft screen blanking implemented.
+ *		No acceleration yet.  (David Dawes)
+ *
+ *    01/2003 - Version 0.3.0: fbcon acceleration support added.  Module
+ *		option handling added.  (David Dawes)
+ *
+ *    01/2003 - Version 0.4.0: fbcon HW cursor support added.  (David Dawes)
+ *
+ *    01/2003 - Version 0.4.1: Add auto-generation of built-in modes.
+ *		(David Dawes)
+ *
+ *    02/2003 - Version 0.4.2: Add check for active non-CRT devices, and
+ *		mode validation checks.  (David Dawes)
+ *
+ *    02/2003 - Version 0.4.3: Check when the VC is in graphics mode so that
+ *		acceleration is disabled while an XFree86 server is running.
+ *		(David Dawes)
+ *
+ *    02/2003 - Version 0.4.4: Monitor DPMS support.  (David Dawes)
+ *
+ *    02/2003 - Version 0.4.5: Basic XFree86 + fbdev working.  (David Dawes)
+ *
+ *    02/2003 - Version 0.5.0: Modify to work with the 2.5.32 kernel as well
+ *		as 2.4.x kernels.  (David Dawes)
+ *
+ *    02/2003 - Version 0.6.0: Split out HW-specifics into a separate file.
+ *		(David Dawes)
+ *
+ *    02/2003 - Version 0.7.0: Test on 852GM/855GM.  Acceleration and HW
+ *		cursor are disabled on this platform.  (David Dawes)
+ *
+ *    02/2003 - Version 0.7.1: Test on 845G.  Acceleration is disabled
+ *		on this platform.  (David Dawes)
+ *
+ *    02/2003 - Version 0.7.2: Test on 830M.  Acceleration and HW
+ *		cursor are disabled on this platform.  (David Dawes)
+ *
+ *    02/2003 - Version 0.7.3: Fix 8-bit modes for mobile platforms
+ *		(David Dawes)
+ *
+ *    02/2003 - Version 0.7.4: Add checks for FB and FBCON_HAS_CFB* configured
+ *		in the kernel, and add mode bpp verification and default
+ *		bpp selection based on which FBCON_HAS_CFB* are configured.
+ *		(David Dawes)
+ *
+ *    02/2003 - Version 0.7.5: Add basic package/install scripts based on the
+ *		DRI packaging scripts.  (David Dawes)
+ *
+ *    04/2003 - Version 0.7.6: Fix typo that affects builds with SMP-enabled
+ *		kernels.  (David Dawes, reported by Anupam).
+ *
+ *    06/2003 - Version 0.7.7:
+ *              Fix Makefile.kernel build problem (Tsutomu Yasuda).
+ *		Fix mis-placed #endif (2.4.21 kernel).
+ *
+ *    09/2004 - Version 0.9.0 - by Sylvain Meyer
+ *              Port to linux 2.6 kernel fbdev
+ *              Fix HW accel and HW cursor on i845G
+ *              Use of agpgart for fb memory reservation
+ *              Add mtrr support
+ *
+ *    10/2004 - Version 0.9.1
+ *              Use module_param instead of old MODULE_PARM
+ *              Some cleanup
+ *
+ *    11/2004 - Version 0.9.2
+ *              Add vram option to reserve more memory than stolen by BIOS
+ *              Fix intelfbhw_pan_display typo
+ *              Add __initdata annotations
+ *
+ *    04/2008 - Version 0.9.5
+ *              Add support for 965G/965GM. (Maik Broemme <mbroemme@plusserver.de>)
+ *
+ *    08/2008 - Version 0.9.6
+ *              Add support for 945GME. (Phil Endecott <spam_from_intelfb@chezphil.org>)
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/fb.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/vmalloc.h>
+#include <linux/pagemap.h>
+#include <linux/screen_info.h>
+
+#include <asm/io.h>
+
+#include "intelfb.h"
+#include "intelfbhw.h"
+#include "../edid.h"
+
+static void get_initial_mode(struct intelfb_info *dinfo);
+static void update_dinfo(struct intelfb_info *dinfo,
+			 struct fb_var_screeninfo *var);
+static int intelfb_open(struct fb_info *info, int user);
+static int intelfb_release(struct fb_info *info, int user);
+static int intelfb_check_var(struct fb_var_screeninfo *var,
+			     struct fb_info *info);
+static int intelfb_set_par(struct fb_info *info);
+static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
+			     unsigned blue, unsigned transp,
+			     struct fb_info *info);
+
+static int intelfb_blank(int blank, struct fb_info *info);
+static int intelfb_pan_display(struct fb_var_screeninfo *var,
+			       struct fb_info *info);
+
+static void intelfb_fillrect(struct fb_info *info,
+			     const struct fb_fillrect *rect);
+static void intelfb_copyarea(struct fb_info *info,
+			     const struct fb_copyarea *region);
+static void intelfb_imageblit(struct fb_info *info,
+			      const struct fb_image *image);
+static int intelfb_cursor(struct fb_info *info,
+			   struct fb_cursor *cursor);
+
+static int intelfb_sync(struct fb_info *info);
+
+static int intelfb_ioctl(struct fb_info *info,
+			 unsigned int cmd, unsigned long arg);
+
+static int intelfb_pci_register(struct pci_dev *pdev,
+				const struct pci_device_id *ent);
+static void intelfb_pci_unregister(struct pci_dev *pdev);
+static int intelfb_set_fbinfo(struct intelfb_info *dinfo);
+
+/*
+ * Limiting the class to PCI_CLASS_DISPLAY_VGA prevents function 1 of the
+ * mobile chipsets from being registered.
+ */
+#if DETECT_VGA_CLASS_ONLY
+#define INTELFB_CLASS_MASK ~0 << 8
+#else
+#define INTELFB_CLASS_MASK 0
+#endif
+
+static const struct pci_device_id intelfb_pci_table[] = {
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_830M, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_830M },
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_845G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_845G },
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_85XGM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_85XGM },
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_865G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_865G },
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_854, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_854 },
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_915G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_915G },
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_915GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_915GM },
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945G },
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945GM },
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_945GME, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_945GME },
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_965G, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_965G },
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_965GM, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8, INTELFB_CLASS_MASK, INTEL_965GM },
+	{ 0, }
+};
+
+/* Global data */
+static int num_registered = 0;
+
+/* fb ops */
+static struct fb_ops intel_fb_ops = {
+	.owner =		THIS_MODULE,
+	.fb_open =              intelfb_open,
+	.fb_release =           intelfb_release,
+	.fb_check_var =         intelfb_check_var,
+	.fb_set_par =           intelfb_set_par,
+	.fb_setcolreg =		intelfb_setcolreg,
+	.fb_blank =		intelfb_blank,
+	.fb_pan_display =       intelfb_pan_display,
+	.fb_fillrect  =         intelfb_fillrect,
+	.fb_copyarea  =         intelfb_copyarea,
+	.fb_imageblit =         intelfb_imageblit,
+	.fb_cursor =            intelfb_cursor,
+	.fb_sync =              intelfb_sync,
+	.fb_ioctl =		intelfb_ioctl
+};
+
+/* PCI driver module table */
+static struct pci_driver intelfb_driver = {
+	.name =		"intelfb",
+	.id_table =	intelfb_pci_table,
+	.probe =	intelfb_pci_register,
+	.remove =	intelfb_pci_unregister,
+};
+
+/* Module description/parameters */
+MODULE_AUTHOR("David Dawes <dawes@tungstengraphics.com>, "
+	      "Sylvain Meyer <sylvain.meyer@worldonline.fr>");
+MODULE_DESCRIPTION("Framebuffer driver for Intel(R) " SUPPORTED_CHIPSETS
+		   " chipsets");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_DEVICE_TABLE(pci, intelfb_pci_table);
+
+static bool accel       = 1;
+static int vram         = 4;
+static bool hwcursor    = 0;
+static bool mtrr        = 1;
+static bool fixed       = 0;
+static bool noinit      = 0;
+static bool noregister  = 0;
+static bool probeonly   = 0;
+static bool idonly      = 0;
+static int bailearly    = 0;
+static int voffset	= 48;
+static char *mode       = NULL;
+
+module_param(accel, bool, S_IRUGO);
+MODULE_PARM_DESC(accel, "Enable hardware acceleration");
+module_param(vram, int, S_IRUGO);
+MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB");
+module_param(voffset, int, S_IRUGO);
+MODULE_PARM_DESC(voffset, "Offset of framebuffer in MiB");
+module_param(hwcursor, bool, S_IRUGO);
+MODULE_PARM_DESC(hwcursor, "Enable HW cursor");
+module_param(mtrr, bool, S_IRUGO);
+MODULE_PARM_DESC(mtrr, "Enable MTRR support");
+module_param(fixed, bool, S_IRUGO);
+MODULE_PARM_DESC(fixed, "Disable mode switching");
+module_param(noinit, bool, 0);
+MODULE_PARM_DESC(noinit, "Don't initialise graphics mode when loading");
+module_param(noregister, bool, 0);
+MODULE_PARM_DESC(noregister, "Don't register, just probe and exit (debug)");
+module_param(probeonly, bool, 0);
+MODULE_PARM_DESC(probeonly, "Do a minimal probe (debug)");
+module_param(idonly, bool, 0);
+MODULE_PARM_DESC(idonly, "Just identify without doing anything else (debug)");
+module_param(bailearly, int, 0);
+MODULE_PARM_DESC(bailearly, "Bail out early, depending on value (debug)");
+module_param(mode, charp, S_IRUGO);
+MODULE_PARM_DESC(mode,
+		 "Initial video mode \"<xres>x<yres>[-<depth>][@<refresh>]\"");
+
+#ifndef MODULE
+#define OPT_EQUAL(opt, name) (!strncmp(opt, name, strlen(name)))
+#define OPT_INTVAL(opt, name) simple_strtoul(opt + strlen(name) + 1, NULL, 0)
+#define OPT_STRVAL(opt, name) (opt + strlen(name))
+
+static __inline__ char * get_opt_string(const char *this_opt, const char *name)
+{
+	const char *p;
+	int i;
+	char *ret;
+
+	p = OPT_STRVAL(this_opt, name);
+	i = 0;
+	while (p[i] && p[i] != ' ' && p[i] != ',')
+		i++;
+	ret = kmalloc(i + 1, GFP_KERNEL);
+	if (ret) {
+		strncpy(ret, p, i);
+		ret[i] = '\0';
+	}
+	return ret;
+}
+
+static __inline__ int get_opt_int(const char *this_opt, const char *name,
+				  int *ret)
+{
+	if (!ret)
+		return 0;
+
+	if (!OPT_EQUAL(this_opt, name))
+		return 0;
+
+	*ret = OPT_INTVAL(this_opt, name);
+	return 1;
+}
+
+static __inline__ int get_opt_bool(const char *this_opt, const char *name,
+				   bool *ret)
+{
+	if (!ret)
+		return 0;
+
+	if (OPT_EQUAL(this_opt, name)) {
+		if (this_opt[strlen(name)] == '=')
+			*ret = simple_strtoul(this_opt + strlen(name) + 1,
+					      NULL, 0);
+		else
+			*ret = 1;
+	} else {
+		if (OPT_EQUAL(this_opt, "no") && OPT_EQUAL(this_opt + 2, name))
+			*ret = 0;
+		else
+			return 0;
+	}
+	return 1;
+}
+
+static int __init intelfb_setup(char *options)
+{
+	char *this_opt;
+
+	DBG_MSG("intelfb_setup\n");
+
+	if (!options || !*options) {
+		DBG_MSG("no options\n");
+		return 0;
+	} else
+		DBG_MSG("options: %s\n", options);
+
+	/*
+	 * These are the built-in options analogous to the module parameters
+	 * defined above.
+	 *
+	 * The syntax is:
+	 *
+	 *    video=intelfb:[mode][,<param>=<val>] ...
+	 *
+	 * e.g.,
+	 *
+	 *    video=intelfb:1024x768-16@75,accel=0
+	 */
+
+	while ((this_opt = strsep(&options, ","))) {
+		if (!*this_opt)
+			continue;
+		if (get_opt_bool(this_opt, "accel", &accel))
+			;
+		else if (get_opt_int(this_opt, "vram", &vram))
+			;
+		else if (get_opt_bool(this_opt, "hwcursor", &hwcursor))
+			;
+		else if (get_opt_bool(this_opt, "mtrr", &mtrr))
+			;
+		else if (get_opt_bool(this_opt, "fixed", &fixed))
+			;
+		else if (get_opt_bool(this_opt, "init", &noinit))
+			noinit = !noinit;
+		else if (OPT_EQUAL(this_opt, "mode="))
+			mode = get_opt_string(this_opt, "mode=");
+		else
+			mode = this_opt;
+	}
+
+	return 0;
+}
+
+#endif
+
+static int __init intelfb_init(void)
+{
+#ifndef MODULE
+	char *option = NULL;
+#endif
+
+	DBG_MSG("intelfb_init\n");
+
+	INF_MSG("Framebuffer driver for "
+		"Intel(R) " SUPPORTED_CHIPSETS " chipsets\n");
+	INF_MSG("Version " INTELFB_VERSION "\n");
+
+	if (idonly)
+		return -ENODEV;
+
+#ifndef MODULE
+	if (fb_get_options("intelfb", &option))
+		return -ENODEV;
+	intelfb_setup(option);
+#endif
+
+	return pci_register_driver(&intelfb_driver);
+}
+
+static void __exit intelfb_exit(void)
+{
+	DBG_MSG("intelfb_exit\n");
+	pci_unregister_driver(&intelfb_driver);
+}
+
+module_init(intelfb_init);
+module_exit(intelfb_exit);
+
+/***************************************************************
+ *                        driver init / cleanup                *
+ ***************************************************************/
+
+static void cleanup(struct intelfb_info *dinfo)
+{
+	DBG_MSG("cleanup\n");
+
+	if (!dinfo)
+		return;
+
+	intelfbhw_disable_irq(dinfo);
+
+	fb_dealloc_cmap(&dinfo->info->cmap);
+	kfree(dinfo->info->pixmap.addr);
+
+	if (dinfo->registered)
+		unregister_framebuffer(dinfo->info);
+
+	arch_phys_wc_del(dinfo->wc_cookie);
+
+	if (dinfo->fbmem_gart && dinfo->gtt_fb_mem) {
+		agp_unbind_memory(dinfo->gtt_fb_mem);
+		agp_free_memory(dinfo->gtt_fb_mem);
+	}
+	if (dinfo->gtt_cursor_mem) {
+		agp_unbind_memory(dinfo->gtt_cursor_mem);
+		agp_free_memory(dinfo->gtt_cursor_mem);
+	}
+	if (dinfo->gtt_ring_mem) {
+		agp_unbind_memory(dinfo->gtt_ring_mem);
+		agp_free_memory(dinfo->gtt_ring_mem);
+	}
+
+#ifdef CONFIG_FB_INTEL_I2C
+	/* un-register I2C bus */
+	intelfb_delete_i2c_busses(dinfo);
+#endif
+
+	if (dinfo->mmio_base)
+		iounmap((void __iomem *)dinfo->mmio_base);
+	if (dinfo->aperture.virtual)
+		iounmap((void __iomem *)dinfo->aperture.virtual);
+
+	if (dinfo->flag & INTELFB_MMIO_ACQUIRED)
+		release_mem_region(dinfo->mmio_base_phys, INTEL_REG_SIZE);
+	if (dinfo->flag & INTELFB_FB_ACQUIRED)
+		release_mem_region(dinfo->aperture.physical,
+				   dinfo->aperture.size);
+	framebuffer_release(dinfo->info);
+}
+
+#define bailout(dinfo) do {						\
+	DBG_MSG("bailout\n");						\
+	cleanup(dinfo);							\
+	INF_MSG("Not going to register framebuffer, exiting...\n");	\
+	return -ENODEV;							\
+} while (0)
+
+
+static int intelfb_pci_register(struct pci_dev *pdev,
+				const struct pci_device_id *ent)
+{
+	struct fb_info *info;
+	struct intelfb_info *dinfo;
+	int i, err, dvo;
+	int aperture_size, stolen_size;
+	struct agp_kern_info gtt_info;
+	int agp_memtype;
+	const char *s;
+	struct agp_bridge_data *bridge;
+	int aperture_bar = 0;
+	int mmio_bar = 1;
+	int offset;
+
+	DBG_MSG("intelfb_pci_register\n");
+
+	num_registered++;
+	if (num_registered != 1) {
+		ERR_MSG("Attempted to register %d devices "
+			"(should be only 1).\n", num_registered);
+		return -ENODEV;
+	}
+
+	info = framebuffer_alloc(sizeof(struct intelfb_info), &pdev->dev);
+	if (!info) {
+		ERR_MSG("Could not allocate memory for intelfb_info.\n");
+		return -ENODEV;
+	}
+	if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
+		ERR_MSG("Could not allocate cmap for intelfb_info.\n");
+		goto err_out_cmap;
+	}
+
+	dinfo = info->par;
+	dinfo->info  = info;
+	dinfo->fbops = &intel_fb_ops;
+	dinfo->pdev  = pdev;
+
+	/* Reserve pixmap space. */
+	info->pixmap.addr = kzalloc(64 * 1024, GFP_KERNEL);
+	if (info->pixmap.addr == NULL) {
+		ERR_MSG("Cannot reserve pixmap memory.\n");
+		goto err_out_pixmap;
+	}
+
+	/* set early this option because it could be changed by tv encoder
+	   driver */
+	dinfo->fixed_mode = fixed;
+
+	/* Enable device. */
+	if ((err = pci_enable_device(pdev))) {
+		ERR_MSG("Cannot enable device.\n");
+		cleanup(dinfo);
+		return -ENODEV;
+	}
+
+	/* Set base addresses. */
+	if ((ent->device == PCI_DEVICE_ID_INTEL_915G) ||
+	    (ent->device == PCI_DEVICE_ID_INTEL_915GM) ||
+	    (ent->device == PCI_DEVICE_ID_INTEL_945G)  ||
+	    (ent->device == PCI_DEVICE_ID_INTEL_945GM) ||
+	    (ent->device == PCI_DEVICE_ID_INTEL_945GME) ||
+	    (ent->device == PCI_DEVICE_ID_INTEL_965G) ||
+	    (ent->device == PCI_DEVICE_ID_INTEL_965GM)) {
+
+		aperture_bar = 2;
+		mmio_bar = 0;
+	}
+	dinfo->aperture.physical = pci_resource_start(pdev, aperture_bar);
+	dinfo->aperture.size     = pci_resource_len(pdev, aperture_bar);
+	dinfo->mmio_base_phys    = pci_resource_start(pdev, mmio_bar);
+	DBG_MSG("fb aperture: 0x%llx/0x%llx, MMIO region: 0x%llx/0x%llx\n",
+		(unsigned long long)pci_resource_start(pdev, aperture_bar),
+		(unsigned long long)pci_resource_len(pdev, aperture_bar),
+		(unsigned long long)pci_resource_start(pdev, mmio_bar),
+		(unsigned long long)pci_resource_len(pdev, mmio_bar));
+
+	/* Reserve the fb and MMIO regions */
+	if (!request_mem_region(dinfo->aperture.physical, dinfo->aperture.size,
+				INTELFB_MODULE_NAME)) {
+		ERR_MSG("Cannot reserve FB region.\n");
+		cleanup(dinfo);
+		return -ENODEV;
+	}
+
+	dinfo->flag |= INTELFB_FB_ACQUIRED;
+
+	if (!request_mem_region(dinfo->mmio_base_phys,
+				INTEL_REG_SIZE,
+				INTELFB_MODULE_NAME)) {
+		ERR_MSG("Cannot reserve MMIO region.\n");
+		cleanup(dinfo);
+		return -ENODEV;
+	}
+
+	dinfo->flag |= INTELFB_MMIO_ACQUIRED;
+
+	/* Get the chipset info. */
+	dinfo->pci_chipset = pdev->device;
+
+	if (intelfbhw_get_chipset(pdev, dinfo)) {
+		cleanup(dinfo);
+		return -ENODEV;
+	}
+
+	if (intelfbhw_get_memory(pdev, &aperture_size,&stolen_size)) {
+		cleanup(dinfo);
+		return -ENODEV;
+	}
+
+	INF_MSG("%02x:%02x.%d: %s, aperture size %dMB, "
+		"stolen memory %dkB\n",
+		pdev->bus->number, PCI_SLOT(pdev->devfn),
+		PCI_FUNC(pdev->devfn), dinfo->name,
+		BtoMB(aperture_size), BtoKB(stolen_size));
+
+	/* Set these from the options. */
+	dinfo->accel    = accel;
+	dinfo->hwcursor = hwcursor;
+
+	if (NOACCEL_CHIPSET(dinfo) && dinfo->accel == 1) {
+		INF_MSG("Acceleration is not supported for the %s chipset.\n",
+			dinfo->name);
+		dinfo->accel = 0;
+	}
+
+	/* Framebuffer parameters - Use all the stolen memory if >= vram */
+	if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
+		dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
+		dinfo->fbmem_gart = 0;
+	} else {
+		dinfo->fb.size =  MB(vram);
+		dinfo->fbmem_gart = 1;
+	}
+
+	/* Allocate space for the ring buffer and HW cursor if enabled. */
+	if (dinfo->accel) {
+		dinfo->ring.size = RINGBUFFER_SIZE;
+		dinfo->ring_tail_mask = dinfo->ring.size - 1;
+	}
+	if (dinfo->hwcursor)
+		dinfo->cursor.size = HW_CURSOR_SIZE;
+
+	/* Use agpgart to manage the GATT */
+	if (!(bridge = agp_backend_acquire(pdev))) {
+		ERR_MSG("cannot acquire agp\n");
+		cleanup(dinfo);
+		return -ENODEV;
+	}
+
+	/* get the current gatt info */
+	if (agp_copy_info(bridge, &gtt_info)) {
+		ERR_MSG("cannot get agp info\n");
+		agp_backend_release(bridge);
+		cleanup(dinfo);
+		return -ENODEV;
+	}
+
+	if (MB(voffset) < stolen_size)
+		offset = (stolen_size >> 12);
+	else
+		offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
+
+	/* set the mem offsets - set them after the already used pages */
+	if (dinfo->accel)
+		dinfo->ring.offset = offset + gtt_info.current_memory;
+	if (dinfo->hwcursor)
+		dinfo->cursor.offset = offset +
+			+ gtt_info.current_memory + (dinfo->ring.size >> 12);
+	if (dinfo->fbmem_gart)
+		dinfo->fb.offset = offset +
+			+ gtt_info.current_memory + (dinfo->ring.size >> 12)
+			+ (dinfo->cursor.size >> 12);
+
+	/* Allocate memories (which aren't stolen) */
+	/* Map the fb and MMIO regions */
+	/* ioremap only up to the end of used aperture */
+	dinfo->aperture.virtual = (u8 __iomem *)ioremap_wc
+		(dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
+		 + dinfo->fb.size);
+	if (!dinfo->aperture.virtual) {
+		ERR_MSG("Cannot remap FB region.\n");
+		agp_backend_release(bridge);
+		cleanup(dinfo);
+		return -ENODEV;
+	}
+
+	dinfo->mmio_base =
+		(u8 __iomem *)ioremap_nocache(dinfo->mmio_base_phys,
+					      INTEL_REG_SIZE);
+	if (!dinfo->mmio_base) {
+		ERR_MSG("Cannot remap MMIO region.\n");
+		agp_backend_release(bridge);
+		cleanup(dinfo);
+		return -ENODEV;
+	}
+
+	if (dinfo->accel) {
+		if (!(dinfo->gtt_ring_mem =
+		      agp_allocate_memory(bridge, dinfo->ring.size >> 12,
+					  AGP_NORMAL_MEMORY))) {
+			ERR_MSG("cannot allocate ring buffer memory\n");
+			agp_backend_release(bridge);
+			cleanup(dinfo);
+			return -ENOMEM;
+		}
+		if (agp_bind_memory(dinfo->gtt_ring_mem,
+				    dinfo->ring.offset)) {
+			ERR_MSG("cannot bind ring buffer memory\n");
+			agp_backend_release(bridge);
+			cleanup(dinfo);
+			return -EBUSY;
+		}
+		dinfo->ring.physical = dinfo->aperture.physical
+			+ (dinfo->ring.offset << 12);
+		dinfo->ring.virtual  = dinfo->aperture.virtual
+			+ (dinfo->ring.offset << 12);
+		dinfo->ring_head = 0;
+	}
+	if (dinfo->hwcursor) {
+		agp_memtype = dinfo->mobile ? AGP_PHYSICAL_MEMORY
+			: AGP_NORMAL_MEMORY;
+		if (!(dinfo->gtt_cursor_mem =
+		      agp_allocate_memory(bridge, dinfo->cursor.size >> 12,
+					  agp_memtype))) {
+			ERR_MSG("cannot allocate cursor memory\n");
+			agp_backend_release(bridge);
+			cleanup(dinfo);
+			return -ENOMEM;
+		}
+		if (agp_bind_memory(dinfo->gtt_cursor_mem,
+				    dinfo->cursor.offset)) {
+			ERR_MSG("cannot bind cursor memory\n");
+			agp_backend_release(bridge);
+			cleanup(dinfo);
+			return -EBUSY;
+		}
+		if (dinfo->mobile)
+			dinfo->cursor.physical
+				= dinfo->gtt_cursor_mem->physical;
+		else
+			dinfo->cursor.physical = dinfo->aperture.physical
+				+ (dinfo->cursor.offset << 12);
+		dinfo->cursor.virtual = dinfo->aperture.virtual
+			+ (dinfo->cursor.offset << 12);
+	}
+	if (dinfo->fbmem_gart) {
+		if (!(dinfo->gtt_fb_mem =
+		      agp_allocate_memory(bridge, dinfo->fb.size >> 12,
+					  AGP_NORMAL_MEMORY))) {
+			WRN_MSG("cannot allocate framebuffer memory - use "
+				"the stolen one\n");
+			dinfo->fbmem_gart = 0;
+		}
+		if (agp_bind_memory(dinfo->gtt_fb_mem,
+				    dinfo->fb.offset)) {
+			WRN_MSG("cannot bind framebuffer memory - use "
+				"the stolen one\n");
+			dinfo->fbmem_gart = 0;
+		}
+	}
+
+	/* update framebuffer memory parameters */
+	if (!dinfo->fbmem_gart)
+		dinfo->fb.offset = 0;   /* starts at offset 0 */
+	dinfo->fb.physical = dinfo->aperture.physical
+		+ (dinfo->fb.offset << 12);
+	dinfo->fb.virtual = dinfo->aperture.virtual + (dinfo->fb.offset << 12);
+	dinfo->fb_start = dinfo->fb.offset << 12;
+
+	/* release agpgart */
+	agp_backend_release(bridge);
+
+	if (mtrr)
+		dinfo->wc_cookie = arch_phys_wc_add(dinfo->aperture.physical,
+						    dinfo->aperture.size);
+
+	DBG_MSG("fb: 0x%x(+ 0x%x)/0x%x (0x%p)\n",
+		dinfo->fb.physical, dinfo->fb.offset, dinfo->fb.size,
+		dinfo->fb.virtual);
+	DBG_MSG("MMIO: 0x%x/0x%x (0x%p)\n",
+		dinfo->mmio_base_phys, INTEL_REG_SIZE,
+		dinfo->mmio_base);
+	DBG_MSG("ring buffer: 0x%x/0x%x (0x%p)\n",
+		dinfo->ring.physical, dinfo->ring.size,
+		dinfo->ring.virtual);
+	DBG_MSG("HW cursor: 0x%x/0x%x (0x%p) (offset 0x%x) (phys 0x%x)\n",
+		dinfo->cursor.physical, dinfo->cursor.size,
+		dinfo->cursor.virtual, dinfo->cursor.offset,
+		dinfo->cursor.physical);
+
+	DBG_MSG("options: vram = %d, accel = %d, hwcursor = %d, fixed = %d, "
+		"noinit = %d\n", vram, accel, hwcursor, fixed, noinit);
+	DBG_MSG("options: mode = \"%s\"\n", mode ? mode : "");
+
+	if (probeonly)
+		bailout(dinfo);
+
+	/*
+	 * Check if the LVDS port or any DVO ports are enabled.  If so,
+	 * don't allow mode switching
+	 */
+	dvo = intelfbhw_check_non_crt(dinfo);
+	if (dvo) {
+		dinfo->fixed_mode = 1;
+		WRN_MSG("Non-CRT device is enabled ( ");
+		i = 0;
+		while (dvo) {
+			if (dvo & 1) {
+				s = intelfbhw_dvo_to_string(1 << i);
+				if (s)
+					printk("%s ", s);
+			}
+			dvo >>= 1;
+			++i;
+		}
+		printk(").  Disabling mode switching.\n");
+	}
+
+	if (bailearly == 1)
+		bailout(dinfo);
+
+	if (FIXED_MODE(dinfo) &&
+	    screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB) {
+		ERR_MSG("Video mode must be programmed at boot time.\n");
+		cleanup(dinfo);
+		return -ENODEV;
+	}
+
+	if (bailearly == 2)
+		bailout(dinfo);
+
+	/* Initialise dinfo and related data. */
+	/* If an initial mode was programmed at boot time, get its details. */
+	if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
+		get_initial_mode(dinfo);
+
+	if (bailearly == 3)
+		bailout(dinfo);
+
+	if (FIXED_MODE(dinfo))	/* remap fb address */
+		update_dinfo(dinfo, &dinfo->initial_var);
+
+	if (bailearly == 4)
+		bailout(dinfo);
+
+
+	if (intelfb_set_fbinfo(dinfo)) {
+		cleanup(dinfo);
+		return -ENODEV;
+	}
+
+	if (bailearly == 5)
+		bailout(dinfo);
+
+#ifdef CONFIG_FB_INTEL_I2C
+	/* register I2C bus */
+	intelfb_create_i2c_busses(dinfo);
+#endif
+
+	if (bailearly == 6)
+		bailout(dinfo);
+
+	pci_set_drvdata(pdev, dinfo);
+
+	/* Save the initial register state. */
+	i = intelfbhw_read_hw_state(dinfo, &dinfo->save_state,
+				    bailearly > 6 ? bailearly - 6 : 0);
+	if (i != 0) {
+		DBG_MSG("intelfbhw_read_hw_state returned %d\n", i);
+		bailout(dinfo);
+	}
+
+	intelfbhw_print_hw_state(dinfo, &dinfo->save_state);
+
+	if (bailearly == 18)
+		bailout(dinfo);
+
+	/* read active pipe */
+	dinfo->pipe = intelfbhw_active_pipe(&dinfo->save_state);
+
+	/* Cursor initialisation */
+	if (dinfo->hwcursor) {
+		intelfbhw_cursor_init(dinfo);
+		intelfbhw_cursor_reset(dinfo);
+	}
+
+	if (bailearly == 19)
+		bailout(dinfo);
+
+	/* 2d acceleration init */
+	if (dinfo->accel)
+		intelfbhw_2d_start(dinfo);
+
+	if (bailearly == 20)
+		bailout(dinfo);
+
+	if (noregister)
+		bailout(dinfo);
+
+	if (register_framebuffer(dinfo->info) < 0) {
+		ERR_MSG("Cannot register framebuffer.\n");
+		cleanup(dinfo);
+		return -ENODEV;
+	}
+
+	dinfo->registered = 1;
+	dinfo->open = 0;
+
+	init_waitqueue_head(&dinfo->vsync.wait);
+	spin_lock_init(&dinfo->int_lock);
+	dinfo->irq_flags = 0;
+	dinfo->vsync.pan_display = 0;
+	dinfo->vsync.pan_offset = 0;
+
+	return 0;
+
+err_out_pixmap:
+	fb_dealloc_cmap(&info->cmap);
+err_out_cmap:
+	framebuffer_release(info);
+	return -ENODEV;
+}
+
+static void intelfb_pci_unregister(struct pci_dev *pdev)
+{
+	struct intelfb_info *dinfo = pci_get_drvdata(pdev);
+
+	DBG_MSG("intelfb_pci_unregister\n");
+
+	if (!dinfo)
+		return;
+
+	cleanup(dinfo);
+}
+
+/***************************************************************
+ *                       helper functions                      *
+ ***************************************************************/
+
+__inline__ int intelfb_var_to_depth(const struct fb_var_screeninfo *var)
+{
+	DBG_MSG("intelfb_var_to_depth: bpp: %d, green.length is %d\n",
+		var->bits_per_pixel, var->green.length);
+
+	switch (var->bits_per_pixel) {
+	case 16:
+		return (var->green.length == 6) ? 16 : 15;
+	case 32:
+		return 24;
+	default:
+		return var->bits_per_pixel;
+	}
+}
+
+
+static __inline__ int var_to_refresh(const struct fb_var_screeninfo *var)
+{
+	int xtot = var->xres + var->left_margin + var->right_margin +
+		   var->hsync_len;
+	int ytot = var->yres + var->upper_margin + var->lower_margin +
+		   var->vsync_len;
+
+	return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
+}
+
+/***************************************************************
+ *                Various initialisation functions             *
+ ***************************************************************/
+
+static void get_initial_mode(struct intelfb_info *dinfo)
+{
+	struct fb_var_screeninfo *var;
+	int xtot, ytot;
+
+	DBG_MSG("get_initial_mode\n");
+
+	dinfo->initial_vga = 1;
+	dinfo->initial_fb_base = screen_info.lfb_base;
+	dinfo->initial_video_ram = screen_info.lfb_size * KB(64);
+	dinfo->initial_pitch = screen_info.lfb_linelength;
+
+	var = &dinfo->initial_var;
+	memset(var, 0, sizeof(*var));
+	var->xres = screen_info.lfb_width;
+	var->yres = screen_info.lfb_height;
+	var->bits_per_pixel = screen_info.lfb_depth;
+	switch (screen_info.lfb_depth) {
+	case 15:
+		var->bits_per_pixel = 16;
+		break;
+	case 24:
+		var->bits_per_pixel = 32;
+		break;
+	}
+
+	DBG_MSG("Initial info: FB is 0x%x/0x%x (%d kByte)\n",
+		dinfo->initial_fb_base, dinfo->initial_video_ram,
+		BtoKB(dinfo->initial_video_ram));
+
+	DBG_MSG("Initial info: mode is %dx%d-%d (%d)\n",
+		var->xres, var->yres, var->bits_per_pixel,
+		dinfo->initial_pitch);
+
+	/* Dummy timing values (assume 60Hz) */
+	var->left_margin = (var->xres / 8) & 0xf8;
+	var->right_margin = 32;
+	var->upper_margin = 16;
+	var->lower_margin = 4;
+	var->hsync_len = (var->xres / 8) & 0xf8;
+	var->vsync_len = 4;
+
+	xtot = var->xres + var->left_margin +
+		var->right_margin + var->hsync_len;
+	ytot = var->yres + var->upper_margin +
+		var->lower_margin + var->vsync_len;
+	var->pixclock = 10000000 / xtot * 1000 / ytot * 100 / 60;
+
+	var->height = -1;
+	var->width = -1;
+
+	if (var->bits_per_pixel > 8) {
+		var->red.offset = screen_info.red_pos;
+		var->red.length = screen_info.red_size;
+		var->green.offset = screen_info.green_pos;
+		var->green.length = screen_info.green_size;
+		var->blue.offset = screen_info.blue_pos;
+		var->blue.length = screen_info.blue_size;
+		var->transp.offset = screen_info.rsvd_pos;
+		var->transp.length = screen_info.rsvd_size;
+	} else {
+		var->red.length = 8;
+		var->green.length = 8;
+		var->blue.length = 8;
+	}
+}
+
+static int intelfb_init_var(struct intelfb_info *dinfo)
+{
+	struct fb_var_screeninfo *var;
+	int msrc = 0;
+
+	DBG_MSG("intelfb_init_var\n");
+
+	var = &dinfo->info->var;
+	if (FIXED_MODE(dinfo)) {
+	        memcpy(var, &dinfo->initial_var,
+		       sizeof(struct fb_var_screeninfo));
+		msrc = 5;
+	} else {
+		const u8 *edid_s = fb_firmware_edid(&dinfo->pdev->dev);
+		u8 *edid_d = NULL;
+
+		if (edid_s) {
+			edid_d = kmemdup(edid_s, EDID_LENGTH, GFP_KERNEL);
+
+			if (edid_d) {
+				fb_edid_to_monspecs(edid_d,
+						    &dinfo->info->monspecs);
+				kfree(edid_d);
+			}
+		}
+
+		if (mode) {
+			printk("intelfb: Looking for mode in private "
+			       "database\n");
+			msrc = fb_find_mode(var, dinfo->info, mode,
+					    dinfo->info->monspecs.modedb,
+					    dinfo->info->monspecs.modedb_len,
+					    NULL, 0);
+
+			if (msrc && msrc > 1) {
+				printk("intelfb: No mode in private database, "
+				       "intelfb: looking for mode in global "
+				       "database ");
+				msrc = fb_find_mode(var, dinfo->info, mode,
+						    NULL, 0, NULL, 0);
+
+				if (msrc)
+					msrc |= 8;
+			}
+
+		}
+
+		if (!msrc)
+			msrc = fb_find_mode(var, dinfo->info, PREFERRED_MODE,
+					    NULL, 0, NULL, 0);
+	}
+
+	if (!msrc) {
+		ERR_MSG("Cannot find a suitable video mode.\n");
+		return 1;
+	}
+
+	INF_MSG("Initial video mode is %dx%d-%d@%d.\n", var->xres, var->yres,
+		var->bits_per_pixel, var_to_refresh(var));
+
+	DBG_MSG("Initial video mode is from %d.\n", msrc);
+
+#if ALLOCATE_FOR_PANNING
+	/* Allow use of half of the video ram for panning */
+	var->xres_virtual = var->xres;
+	var->yres_virtual =
+		dinfo->fb.size / 2 / (var->bits_per_pixel * var->xres);
+	if (var->yres_virtual < var->yres)
+		var->yres_virtual = var->yres;
+#else
+	var->yres_virtual = var->yres;
+#endif
+
+	if (dinfo->accel)
+		var->accel_flags |= FB_ACCELF_TEXT;
+	else
+		var->accel_flags &= ~FB_ACCELF_TEXT;
+
+	return 0;
+}
+
+static int intelfb_set_fbinfo(struct intelfb_info *dinfo)
+{
+	struct fb_info *info = dinfo->info;
+
+	DBG_MSG("intelfb_set_fbinfo\n");
+
+	info->flags = FBINFO_FLAG_DEFAULT;
+	info->fbops = &intel_fb_ops;
+	info->pseudo_palette = dinfo->pseudo_palette;
+
+	info->pixmap.size = 64*1024;
+	info->pixmap.buf_align = 8;
+	info->pixmap.access_align = 32;
+	info->pixmap.flags = FB_PIXMAP_SYSTEM;
+
+	if (intelfb_init_var(dinfo))
+		return 1;
+
+	info->pixmap.scan_align = 1;
+	strcpy(info->fix.id, dinfo->name);
+	info->fix.smem_start = dinfo->fb.physical;
+	info->fix.smem_len = dinfo->fb.size;
+	info->fix.type = FB_TYPE_PACKED_PIXELS;
+	info->fix.type_aux = 0;
+	info->fix.xpanstep = 8;
+	info->fix.ypanstep = 1;
+	info->fix.ywrapstep = 0;
+	info->fix.mmio_start = dinfo->mmio_base_phys;
+	info->fix.mmio_len = INTEL_REG_SIZE;
+	info->fix.accel = FB_ACCEL_I830;
+	update_dinfo(dinfo, &info->var);
+
+	return 0;
+}
+
+/* Update dinfo to match the active video mode. */
+static void update_dinfo(struct intelfb_info *dinfo,
+			 struct fb_var_screeninfo *var)
+{
+	DBG_MSG("update_dinfo\n");
+
+	dinfo->bpp = var->bits_per_pixel;
+	dinfo->depth = intelfb_var_to_depth(var);
+	dinfo->xres = var->xres;
+	dinfo->yres = var->xres;
+	dinfo->pixclock = var->pixclock;
+
+	dinfo->info->fix.visual = dinfo->visual;
+	dinfo->info->fix.line_length = dinfo->pitch;
+
+	switch (dinfo->bpp) {
+	case 8:
+		dinfo->visual = FB_VISUAL_PSEUDOCOLOR;
+		dinfo->pitch = var->xres_virtual;
+		break;
+	case 16:
+		dinfo->visual = FB_VISUAL_TRUECOLOR;
+		dinfo->pitch = var->xres_virtual * 2;
+		break;
+	case 32:
+		dinfo->visual = FB_VISUAL_TRUECOLOR;
+		dinfo->pitch = var->xres_virtual * 4;
+		break;
+	}
+
+	/* Make sure the line length is a aligned correctly. */
+	if (IS_I9XX(dinfo))
+		dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT_I9XX);
+	else
+		dinfo->pitch = ROUND_UP_TO(dinfo->pitch, STRIDE_ALIGNMENT);
+
+	if (FIXED_MODE(dinfo))
+		dinfo->pitch = dinfo->initial_pitch;
+
+	dinfo->info->screen_base = (char __iomem *)dinfo->fb.virtual;
+	dinfo->info->fix.line_length = dinfo->pitch;
+	dinfo->info->fix.visual = dinfo->visual;
+}
+
+/* fbops functions */
+
+/***************************************************************
+ *                       fbdev interface                       *
+ ***************************************************************/
+
+static int intelfb_open(struct fb_info *info, int user)
+{
+	struct intelfb_info *dinfo = GET_DINFO(info);
+
+	if (user)
+		dinfo->open++;
+
+	return 0;
+}
+
+static int intelfb_release(struct fb_info *info, int user)
+{
+	struct intelfb_info *dinfo = GET_DINFO(info);
+
+	if (user) {
+		dinfo->open--;
+		msleep(1);
+		if (!dinfo->open)
+			intelfbhw_disable_irq(dinfo);
+	}
+
+	return 0;
+}
+
+static int intelfb_check_var(struct fb_var_screeninfo *var,
+			     struct fb_info *info)
+{
+	int change_var = 0;
+	struct fb_var_screeninfo v;
+	struct intelfb_info *dinfo;
+	static int first = 1;
+	int i;
+	/* Good pitches to allow tiling.  Don't care about pitches < 1024. */
+	static const int pitches[] = {
+		128 * 8,
+		128 * 16,
+		128 * 32,
+		128 * 64,
+		0
+	};
+
+	DBG_MSG("intelfb_check_var: accel_flags is %d\n", var->accel_flags);
+
+	dinfo = GET_DINFO(info);
+
+	/* update the pitch */
+	if (intelfbhw_validate_mode(dinfo, var) != 0)
+		return -EINVAL;
+
+	v = *var;
+
+	for (i = 0; pitches[i] != 0; i++) {
+		if (pitches[i] >= v.xres_virtual) {
+			v.xres_virtual = pitches[i];
+			break;
+		}
+	}
+
+	/* Check for a supported bpp. */
+	if (v.bits_per_pixel <= 8)
+		v.bits_per_pixel = 8;
+	else if (v.bits_per_pixel <= 16) {
+		if (v.bits_per_pixel == 16)
+			v.green.length = 6;
+		v.bits_per_pixel = 16;
+	} else if (v.bits_per_pixel <= 32)
+		v.bits_per_pixel = 32;
+	else
+		return -EINVAL;
+
+	change_var = ((info->var.xres != var->xres) ||
+		      (info->var.yres != var->yres) ||
+		      (info->var.xres_virtual != var->xres_virtual) ||
+		      (info->var.yres_virtual != var->yres_virtual) ||
+		      (info->var.bits_per_pixel != var->bits_per_pixel) ||
+		      memcmp(&info->var.red, &var->red, sizeof(var->red)) ||
+		      memcmp(&info->var.green, &var->green,
+			     sizeof(var->green)) ||
+		      memcmp(&info->var.blue, &var->blue, sizeof(var->blue)));
+
+	if (FIXED_MODE(dinfo) &&
+	    (change_var ||
+	     var->yres_virtual > dinfo->initial_var.yres_virtual ||
+	     var->yres_virtual < dinfo->initial_var.yres ||
+	     var->xoffset || var->nonstd)) {
+		if (first) {
+			ERR_MSG("Changing the video mode is not supported.\n");
+			first = 0;
+		}
+		return -EINVAL;
+	}
+
+	switch (intelfb_var_to_depth(&v)) {
+	case 8:
+		v.red.offset = v.green.offset = v.blue.offset = 0;
+		v.red.length = v.green.length = v.blue.length = 8;
+		v.transp.offset = v.transp.length = 0;
+		break;
+	case 15:
+		v.red.offset = 10;
+		v.green.offset = 5;
+		v.blue.offset = 0;
+		v.red.length = v.green.length = v.blue.length = 5;
+		v.transp.offset = v.transp.length = 0;
+		break;
+	case 16:
+		v.red.offset = 11;
+		v.green.offset = 5;
+		v.blue.offset = 0;
+		v.red.length = 5;
+		v.green.length = 6;
+		v.blue.length = 5;
+		v.transp.offset = v.transp.length = 0;
+		break;
+	case 24:
+		v.red.offset = 16;
+		v.green.offset = 8;
+		v.blue.offset = 0;
+		v.red.length = v.green.length = v.blue.length = 8;
+		v.transp.offset = v.transp.length = 0;
+		break;
+	case 32:
+		v.red.offset = 16;
+		v.green.offset = 8;
+		v.blue.offset = 0;
+		v.red.length = v.green.length = v.blue.length = 8;
+		v.transp.offset = 24;
+		v.transp.length = 8;
+		break;
+	}
+
+	if (v.xoffset > v.xres_virtual - v.xres)
+		v.xoffset = v.xres_virtual - v.xres;
+	if (v.yoffset > v.yres_virtual - v.yres)
+		v.yoffset = v.yres_virtual - v.yres;
+
+	v.red.msb_right = v.green.msb_right = v.blue.msb_right =
+			  v.transp.msb_right = 0;
+
+        *var = v;
+
+	return 0;
+}
+
+static int intelfb_set_par(struct fb_info *info)
+{
+	struct intelfb_hwstate *hw;
+        struct intelfb_info *dinfo = GET_DINFO(info);
+
+	if (FIXED_MODE(dinfo)) {
+		ERR_MSG("Changing the video mode is not supported.\n");
+		return -EINVAL;
+	}
+
+	hw = kmalloc(sizeof(*hw), GFP_ATOMIC);
+	if (!hw)
+		return -ENOMEM;
+
+	DBG_MSG("intelfb_set_par (%dx%d-%d)\n", info->var.xres,
+		info->var.yres, info->var.bits_per_pixel);
+
+	/*
+	 * Disable VCO prior to timing register change.
+	 */
+	OUTREG(DPLL_A, INREG(DPLL_A) & ~DPLL_VCO_ENABLE);
+
+	intelfb_blank(FB_BLANK_POWERDOWN, info);
+
+	if (ACCEL(dinfo, info))
+		intelfbhw_2d_stop(dinfo);
+
+	memcpy(hw, &dinfo->save_state, sizeof(*hw));
+	if (intelfbhw_mode_to_hw(dinfo, hw, &info->var))
+		goto invalid_mode;
+	if (intelfbhw_program_mode(dinfo, hw, 0))
+		goto invalid_mode;
+
+#if REGDUMP > 0
+	intelfbhw_read_hw_state(dinfo, hw, 0);
+	intelfbhw_print_hw_state(dinfo, hw);
+#endif
+
+	update_dinfo(dinfo, &info->var);
+
+	if (ACCEL(dinfo, info))
+		intelfbhw_2d_start(dinfo);
+
+	intelfb_pan_display(&info->var, info);
+
+	intelfb_blank(FB_BLANK_UNBLANK, info);
+
+	if (ACCEL(dinfo, info)) {
+		info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
+		FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
+		FBINFO_HWACCEL_IMAGEBLIT;
+	} else
+		info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
+
+	kfree(hw);
+	return 0;
+invalid_mode:
+	kfree(hw);
+	return -EINVAL;
+}
+
+static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
+			     unsigned blue, unsigned transp,
+			     struct fb_info *info)
+{
+	struct intelfb_info *dinfo = GET_DINFO(info);
+
+#if VERBOSE > 0
+	DBG_MSG("intelfb_setcolreg: regno %d, depth %d\n", regno, dinfo->depth);
+#endif
+
+	if (regno > 255)
+		return 1;
+
+	if (dinfo->depth == 8) {
+		red >>= 8;
+		green >>= 8;
+		blue >>= 8;
+
+		intelfbhw_setcolreg(dinfo, regno, red, green, blue,
+				    transp);
+	}
+
+	if (regno < 16) {
+		switch (dinfo->depth) {
+		case 15:
+			dinfo->pseudo_palette[regno] = ((red & 0xf800) >>  1) |
+				((green & 0xf800) >>  6) |
+				((blue & 0xf800) >> 11);
+			break;
+		case 16:
+			dinfo->pseudo_palette[regno] = (red & 0xf800) |
+				((green & 0xfc00) >>  5) |
+				((blue  & 0xf800) >> 11);
+			break;
+		case 24:
+			dinfo->pseudo_palette[regno] = ((red & 0xff00) << 8) |
+				(green & 0xff00) |
+				((blue  & 0xff00) >> 8);
+			break;
+		}
+	}
+
+	return 0;
+}
+
+static int intelfb_blank(int blank, struct fb_info *info)
+{
+	intelfbhw_do_blank(blank, info);
+	return 0;
+}
+
+static int intelfb_pan_display(struct fb_var_screeninfo *var,
+			       struct fb_info *info)
+{
+	intelfbhw_pan_display(var, info);
+	return 0;
+}
+
+/* When/if we have our own ioctls. */
+static int intelfb_ioctl(struct fb_info *info, unsigned int cmd,
+			 unsigned long arg)
+{
+	int retval = 0;
+	struct intelfb_info *dinfo = GET_DINFO(info);
+	u32 pipe = 0;
+
+	switch (cmd) {
+		case FBIO_WAITFORVSYNC:
+			if (get_user(pipe, (__u32 __user *)arg))
+				return -EFAULT;
+
+			retval = intelfbhw_wait_for_vsync(dinfo, pipe);
+			break;
+		default:
+			break;
+	}
+
+	return retval;
+}
+
+static void intelfb_fillrect (struct fb_info *info,
+			      const struct fb_fillrect *rect)
+{
+        struct intelfb_info *dinfo = GET_DINFO(info);
+	u32 rop, color;
+
+#if VERBOSE > 0
+	DBG_MSG("intelfb_fillrect\n");
+#endif
+
+	if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
+		cfb_fillrect(info, rect);
+		return;
+	}
+
+	if (rect->rop == ROP_COPY)
+		rop = PAT_ROP_GXCOPY;
+	else /* ROP_XOR */
+		rop = PAT_ROP_GXXOR;
+
+	if (dinfo->depth != 8)
+		color = dinfo->pseudo_palette[rect->color];
+	else
+		color = rect->color;
+
+	intelfbhw_do_fillrect(dinfo, rect->dx, rect->dy,
+			      rect->width, rect->height, color,
+			      dinfo->pitch, info->var.bits_per_pixel,
+			      rop);
+}
+
+static void intelfb_copyarea(struct fb_info *info,
+			     const struct fb_copyarea *region)
+{
+        struct intelfb_info *dinfo = GET_DINFO(info);
+
+#if VERBOSE > 0
+	DBG_MSG("intelfb_copyarea\n");
+#endif
+
+	if (!ACCEL(dinfo, info) || dinfo->depth == 4) {
+		cfb_copyarea(info, region);
+		return;
+	}
+
+	intelfbhw_do_bitblt(dinfo, region->sx, region->sy, region->dx,
+			    region->dy, region->width, region->height,
+			    dinfo->pitch, info->var.bits_per_pixel);
+}
+
+static void intelfb_imageblit(struct fb_info *info,
+			      const struct fb_image *image)
+{
+        struct intelfb_info *dinfo = GET_DINFO(info);
+	u32 fgcolor, bgcolor;
+
+#if VERBOSE > 0
+	DBG_MSG("intelfb_imageblit\n");
+#endif
+
+	if (!ACCEL(dinfo, info) || dinfo->depth == 4
+	    || image->depth != 1) {
+		cfb_imageblit(info, image);
+		return;
+	}
+
+	if (dinfo->depth != 8) {
+		fgcolor = dinfo->pseudo_palette[image->fg_color];
+		bgcolor = dinfo->pseudo_palette[image->bg_color];
+	} else {
+		fgcolor = image->fg_color;
+		bgcolor = image->bg_color;
+	}
+
+	if (!intelfbhw_do_drawglyph(dinfo, fgcolor, bgcolor, image->width,
+				    image->height, image->data,
+				    image->dx, image->dy,
+				    dinfo->pitch, info->var.bits_per_pixel)) {
+		cfb_imageblit(info, image);
+		return;
+	}
+}
+
+static int intelfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
+{
+        struct intelfb_info *dinfo = GET_DINFO(info);
+	u32 physical;
+#if VERBOSE > 0
+	DBG_MSG("intelfb_cursor\n");
+#endif
+
+	if (!dinfo->hwcursor)
+		return -ENODEV;
+
+	intelfbhw_cursor_hide(dinfo);
+
+	/* If XFree killed the cursor - restore it */
+	physical = (dinfo->mobile || IS_I9XX(dinfo)) ? dinfo->cursor.physical :
+		   (dinfo->cursor.offset << 12);
+
+	if (INREG(CURSOR_A_BASEADDR) != physical) {
+		u32 fg, bg;
+
+		DBG_MSG("the cursor was killed - restore it !!\n");
+		DBG_MSG("size %d, %d   pos %d, %d\n",
+			cursor->image.width, cursor->image.height,
+			cursor->image.dx, cursor->image.dy);
+
+		intelfbhw_cursor_init(dinfo);
+		intelfbhw_cursor_reset(dinfo);
+		intelfbhw_cursor_setpos(dinfo, cursor->image.dx,
+					cursor->image.dy);
+
+		if (dinfo->depth != 8) {
+			fg =dinfo->pseudo_palette[cursor->image.fg_color];
+			bg =dinfo->pseudo_palette[cursor->image.bg_color];
+		} else {
+			fg = cursor->image.fg_color;
+			bg = cursor->image.bg_color;
+		}
+		intelfbhw_cursor_setcolor(dinfo, bg, fg);
+		intelfbhw_cursor_load(dinfo, cursor->image.width,
+				      cursor->image.height,
+				      dinfo->cursor_src);
+
+		if (cursor->enable)
+			intelfbhw_cursor_show(dinfo);
+		return 0;
+	}
+
+	if (cursor->set & FB_CUR_SETPOS) {
+		u32 dx, dy;
+
+		dx = cursor->image.dx - info->var.xoffset;
+		dy = cursor->image.dy - info->var.yoffset;
+
+		intelfbhw_cursor_setpos(dinfo, dx, dy);
+	}
+
+	if (cursor->set & FB_CUR_SETSIZE) {
+		if (cursor->image.width > 64 || cursor->image.height > 64)
+			return -ENXIO;
+
+		intelfbhw_cursor_reset(dinfo);
+	}
+
+	if (cursor->set & FB_CUR_SETCMAP) {
+		u32 fg, bg;
+
+		if (dinfo->depth != 8) {
+			fg = dinfo->pseudo_palette[cursor->image.fg_color];
+			bg = dinfo->pseudo_palette[cursor->image.bg_color];
+		} else {
+			fg = cursor->image.fg_color;
+			bg = cursor->image.bg_color;
+		}
+
+		intelfbhw_cursor_setcolor(dinfo, bg, fg);
+	}
+
+	if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
+		u32 s_pitch = (ROUND_UP_TO(cursor->image.width, 8) / 8);
+		u32 size = s_pitch * cursor->image.height;
+		u8 *dat = (u8 *) cursor->image.data;
+		u8 *msk = (u8 *) cursor->mask;
+		u8 src[64];
+		u32 i;
+
+		if (cursor->image.depth != 1)
+			return -ENXIO;
+
+		switch (cursor->rop) {
+		case ROP_XOR:
+			for (i = 0; i < size; i++)
+				src[i] = dat[i] ^ msk[i];
+			break;
+		case ROP_COPY:
+		default:
+			for (i = 0; i < size; i++)
+				src[i] = dat[i] & msk[i];
+			break;
+		}
+
+		/* save the bitmap to restore it when XFree will
+		   make the cursor dirty */
+		memcpy(dinfo->cursor_src, src, size);
+
+		intelfbhw_cursor_load(dinfo, cursor->image.width,
+				      cursor->image.height, src);
+	}
+
+	if (cursor->enable)
+		intelfbhw_cursor_show(dinfo);
+
+	return 0;
+}
+
+static int intelfb_sync(struct fb_info *info)
+{
+        struct intelfb_info *dinfo = GET_DINFO(info);
+
+#if VERBOSE > 0
+	DBG_MSG("intelfb_sync\n");
+#endif
+
+	if (dinfo->ring_lockup)
+		return 0;
+
+	intelfbhw_do_sync(dinfo);
+	return 0;
+}
+