linux/arch/x86/video/fbdev.c

/*
 * Copyright (C) 2007 Antonino Daplas <adaplas@gmail.com>
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file COPYING in the main directory of this archive
 * for more details.
 *
 */

#include <linux/fb.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/vgaarb.h>
#include <asm/fb.h>

void fb_pgprotect(struct file *file, struct vm_area_struct *vma, unsigned long off)
{
	unsigned long prot;

	prot = pgprot_val(vma->vm_page_prot) & ~_PAGE_CACHE_MASK;
	if (boot_cpu_data.x86 > 3)
		pgprot_val(vma->vm_page_prot) =
			prot | cachemode2protval(_PAGE_CACHE_MODE_UC_MINUS);
}
EXPORT_SYMBOL(fb_pgprotect);

int fb_is_primary_device(struct fb_info *info)
{
	struct device *device = info->device;
	struct pci_dev *pci_dev;

	if (!device || !dev_is_pci(device))
		return 0;

	pci_dev = to_pci_dev(device);

	if (pci_dev == vga_default_device())
		return 1;
	return 0;
}
EXPORT_SYMBOL(fb_is_primary_device);

MODULE_LICENSE("GPL");