X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-x86%2Ffixmap_32.h;h=4b96148e90c15587f715969f2ff4c6fd5a07d4d8;hb=13c48c490208d9e70d8d66d56f96c5054db69af7;hp=249e753ac8053fd3c7b37ccf2a17eec20e2164aa;hpb=2843483d2eb02ad104edbe8b2429fb6a39d25063;p=linux-2.6

diff --git a/include/asm-x86/fixmap_32.h b/include/asm-x86/fixmap_32.h
index 249e753ac8..4b96148e90 100644
--- a/include/asm-x86/fixmap_32.h
+++ b/include/asm-x86/fixmap_32.h
@@ -10,8 +10,8 @@
  * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999
  */
 
-#ifndef _ASM_FIXMAP_H
-#define _ASM_FIXMAP_H
+#ifndef _ASM_FIXMAP_32_H
+#define _ASM_FIXMAP_32_H
 
 
 /* used by vmalloc.c, vsyscall.lds.S.
@@ -65,7 +65,7 @@ enum fixed_addresses {
 #endif
 #ifdef CONFIG_X86_VISWS_APIC
 	FIX_CO_CPU,	/* Cobalt timer */
-	FIX_CO_APIC,	/* Cobalt APIC Redirection Table */ 
+	FIX_CO_APIC,	/* Cobalt APIC Redirection Table */
 	FIX_LI_PCIA,	/* Lithium PCI Bridge A */
 	FIX_LI_PCIB,	/* Lithium PCI Bridge B */
 #endif
@@ -74,7 +74,7 @@ enum fixed_addresses {
 #endif
 #ifdef CONFIG_X86_CYCLONE_TIMER
 	FIX_CYCLONE_TIMER, /*cyclone timer register*/
-#endif 
+#endif
 #ifdef CONFIG_HIGHMEM
 	FIX_KMAP_BEGIN,	/* reserved pte's for temporary kernel mappings */
 	FIX_KMAP_END = FIX_KMAP_BEGIN+(KM_TYPE_NR*NR_CPUS)-1,
@@ -90,28 +90,36 @@ enum fixed_addresses {
 	FIX_PARAVIRT_BOOTMAP,
 #endif
 	__end_of_permanent_fixed_addresses,
-	/* temporary boot-time mappings, used before ioremap() is functional */
-#define NR_FIX_BTMAPS	16
-	FIX_BTMAP_END = __end_of_permanent_fixed_addresses,
-	FIX_BTMAP_BEGIN = FIX_BTMAP_END + NR_FIX_BTMAPS - 1,
+	/*
+	 * 256 temporary boot-time mappings, used by early_ioremap(),
+	 * before ioremap() is functional.
+	 *
+	 * We round it up to the next 512 pages boundary so that we
+	 * can have a single pgd entry and a single pte table:
+	 */
+#define NR_FIX_BTMAPS		64
+#define FIX_BTMAPS_NESTING	4
+	FIX_BTMAP_END = __end_of_permanent_fixed_addresses + 512 -
+			(__end_of_permanent_fixed_addresses & 511),
+	FIX_BTMAP_BEGIN = FIX_BTMAP_END + NR_FIX_BTMAPS*FIX_BTMAPS_NESTING - 1,
 	FIX_WP_TEST,
+#ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT
+	FIX_OHCI1394_BASE,
+#endif
 	__end_of_fixed_addresses
 };
 
-extern void __set_fixmap (enum fixed_addresses idx,
-					unsigned long phys, pgprot_t flags);
+extern void __set_fixmap(enum fixed_addresses idx,
+			 unsigned long phys, pgprot_t flags);
 extern void reserve_top_address(unsigned long reserve);
 
-#define set_fixmap(idx, phys) \
-		__set_fixmap(idx, phys, PAGE_KERNEL)
+#define set_fixmap(idx, phys)				\
+	__set_fixmap(idx, phys, PAGE_KERNEL)
 /*
  * Some hardware wants to get fixmapped without caching.
  */
-#define set_fixmap_nocache(idx, phys) \
-		__set_fixmap(idx, phys, PAGE_KERNEL_NOCACHE)
-
-#define clear_fixmap(idx) \
-		__set_fixmap(idx, 0, __pgprot(0))
+#define set_fixmap_nocache(idx, phys)			\
+	__set_fixmap(idx, phys, PAGE_KERNEL_NOCACHE)
 
 #define FIXADDR_TOP	((unsigned long)__FIXADDR_TOP)
 
@@ -144,7 +152,7 @@ static __always_inline unsigned long fix_to_virt(const unsigned int idx)
 	if (idx >= __end_of_fixed_addresses)
 		__this_fixmap_does_not_exist();
 
-        return __fix_to_virt(idx);
+	return __fix_to_virt(idx);
 }
 
 static inline unsigned long virt_to_fix(const unsigned long vaddr)