162306a36Sopenharmony_ci/* 262306a36Sopenharmony_ci * Copyright (C) 2007 Antonino Daplas <adaplas@gmail.com> 362306a36Sopenharmony_ci * 462306a36Sopenharmony_ci * This file is subject to the terms and conditions of the GNU General Public 562306a36Sopenharmony_ci * License. See the file COPYING in the main directory of this archive 662306a36Sopenharmony_ci * for more details. 762306a36Sopenharmony_ci * 862306a36Sopenharmony_ci */ 962306a36Sopenharmony_ci 1062306a36Sopenharmony_ci#include <linux/fb.h> 1162306a36Sopenharmony_ci#include <linux/module.h> 1262306a36Sopenharmony_ci#include <linux/pci.h> 1362306a36Sopenharmony_ci#include <linux/vgaarb.h> 1462306a36Sopenharmony_ci#include <asm/fb.h> 1562306a36Sopenharmony_ci 1662306a36Sopenharmony_civoid fb_pgprotect(struct file *file, struct vm_area_struct *vma, unsigned long off) 1762306a36Sopenharmony_ci{ 1862306a36Sopenharmony_ci unsigned long prot; 1962306a36Sopenharmony_ci 2062306a36Sopenharmony_ci prot = pgprot_val(vma->vm_page_prot) & ~_PAGE_CACHE_MASK; 2162306a36Sopenharmony_ci if (boot_cpu_data.x86 > 3) 2262306a36Sopenharmony_ci pgprot_val(vma->vm_page_prot) = 2362306a36Sopenharmony_ci prot | cachemode2protval(_PAGE_CACHE_MODE_UC_MINUS); 2462306a36Sopenharmony_ci} 2562306a36Sopenharmony_ciEXPORT_SYMBOL(fb_pgprotect); 2662306a36Sopenharmony_ci 2762306a36Sopenharmony_ciint fb_is_primary_device(struct fb_info *info) 2862306a36Sopenharmony_ci{ 2962306a36Sopenharmony_ci struct device *device = info->device; 3062306a36Sopenharmony_ci struct pci_dev *pci_dev; 3162306a36Sopenharmony_ci 3262306a36Sopenharmony_ci if (!device || !dev_is_pci(device)) 3362306a36Sopenharmony_ci return 0; 3462306a36Sopenharmony_ci 3562306a36Sopenharmony_ci pci_dev = to_pci_dev(device); 3662306a36Sopenharmony_ci 3762306a36Sopenharmony_ci if (pci_dev == vga_default_device()) 3862306a36Sopenharmony_ci return 1; 3962306a36Sopenharmony_ci return 0; 4062306a36Sopenharmony_ci} 4162306a36Sopenharmony_ciEXPORT_SYMBOL(fb_is_primary_device); 4262306a36Sopenharmony_ci 4362306a36Sopenharmony_ciMODULE_LICENSE("GPL"); 44