4 #define FIXADDR_START 0xffc00000UL
5 #define FIXADDR_TOP 0xffe00000UL
6 #define FIXADDR_SIZE (FIXADDR_TOP - FIXADDR_START)
8 #define FIX_KMAP_NR_PTES (FIXADDR_SIZE >> PAGE_SHIFT)
10 #define __fix_to_virt(x) (FIXADDR_START + ((x) << PAGE_SHIFT))
11 #define __virt_to_fix(x) (((x) - FIXADDR_START) >> PAGE_SHIFT)
13 extern void __this_fixmap_does_not_exist(void);
15 static inline unsigned long fix_to_virt(const unsigned int idx)
17 if (idx >= FIX_KMAP_NR_PTES)
18 __this_fixmap_does_not_exist();
19 return __fix_to_virt(idx);
22 static inline unsigned int virt_to_fix(const unsigned long vaddr)
24 BUG_ON(vaddr >= FIXADDR_TOP || vaddr < FIXADDR_START);
25 return __virt_to_fix(vaddr);