1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_FB_H_ 3 #define _ASM_FB_H_ 4 5 #include <linux/fb.h> 6 #include <linux/fs.h> 7 #include <asm/page.h> 8 #include <asm/setup.h> 9 10 #ifdef CONFIG_MMU 11 #ifdef CONFIG_SUN3 12 static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma, 13 unsigned long off) 14 { 15 pgprot_val(vma->vm_page_prot) |= SUN3_PAGE_NOCACHE; 16 } 17 #else 18 static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma, 19 unsigned long off) 20 { 21 if (CPU_IS_020_OR_030) 22 pgprot_val(vma->vm_page_prot) |= _PAGE_NOCACHE030; 23 if (CPU_IS_040_OR_060) { 24 pgprot_val(vma->vm_page_prot) &= _CACHEMASK040; 25 /* Use no-cache mode, serialized */ 26 pgprot_val(vma->vm_page_prot) |= _PAGE_NOCACHE_S; 27 } 28 } 29 #endif /* CONFIG_SUN3 */ 30 #else 31 #define fb_pgprotect(...) do {} while (0) 32 #endif /* CONFIG_MMU */ 33 34 static inline int fb_is_primary_device(struct fb_info *info) 35 { 36 return 0; 37 } 38 39 #endif /* _ASM_FB_H_ */ 40