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authorLinus Torvalds <torvalds@linux-foundation.org>2008-07-14 16:43:24 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-14 16:43:24 -0400
commita3da5bf84a97d48cfaf66c6842470fc403da5121 (patch)
treecdf66c0cff8c61eedd60601fc9dffdd1ed39b880 /include/asm-x86/fixmap_32.h
parent3b23e665b68387f5ee7b21f7b75ceea4d9acae4a (diff)
parentd59fdcf2ac501de99c3dfb452af5e254d4342886 (diff)
Merge branch 'x86/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (821 commits) x86: make 64bit hpet_set_mapping to use ioremap too, v2 x86: get x86_phys_bits early x86: max_low_pfn_mapped fix #4 x86: change _node_to_cpumask_ptr to return const ptr x86: I/O APIC: remove an IRQ2-mask hack x86: fix numaq_tsc_disable calling x86, e820: remove end_user_pfn x86: max_low_pfn_mapped fix, #3 x86: max_low_pfn_mapped fix, #2 x86: max_low_pfn_mapped fix, #1 x86_64: fix delayed signals x86: remove conflicting nx6325 and nx6125 quirks x86: Recover timer_ack lost in the merge of the NMI watchdog x86: I/O APIC: Never configure IRQ2 x86: L-APIC: Always fully configure IRQ0 x86: L-APIC: Set IRQ0 as edge-triggered x86: merge dwarf2 headers x86: use AS_CFI instead of UNWIND_INFO x86: use ignore macro instead of hash comment x86: use matching CFI_ENDPROC ...
Diffstat (limited to 'include/asm-x86/fixmap_32.h')
-rw-r--r--include/asm-x86/fixmap_32.h50
1 files changed, 4 insertions, 46 deletions
diff --git a/include/asm-x86/fixmap_32.h b/include/asm-x86/fixmap_32.h
index 4b96148e90c1..aae2f0501a40 100644
--- a/include/asm-x86/fixmap_32.h
+++ b/include/asm-x86/fixmap_32.h
@@ -79,10 +79,6 @@ enum fixed_addresses {
79 FIX_KMAP_BEGIN, /* reserved pte's for temporary kernel mappings */ 79 FIX_KMAP_BEGIN, /* reserved pte's for temporary kernel mappings */
80 FIX_KMAP_END = FIX_KMAP_BEGIN+(KM_TYPE_NR*NR_CPUS)-1, 80 FIX_KMAP_END = FIX_KMAP_BEGIN+(KM_TYPE_NR*NR_CPUS)-1,
81#endif 81#endif
82#ifdef CONFIG_ACPI
83 FIX_ACPI_BEGIN,
84 FIX_ACPI_END = FIX_ACPI_BEGIN + FIX_ACPI_PAGES - 1,
85#endif
86#ifdef CONFIG_PCI_MMCONFIG 82#ifdef CONFIG_PCI_MMCONFIG
87 FIX_PCIE_MCFG, 83 FIX_PCIE_MCFG,
88#endif 84#endif
@@ -103,23 +99,18 @@ enum fixed_addresses {
103 (__end_of_permanent_fixed_addresses & 511), 99 (__end_of_permanent_fixed_addresses & 511),
104 FIX_BTMAP_BEGIN = FIX_BTMAP_END + NR_FIX_BTMAPS*FIX_BTMAPS_NESTING - 1, 100 FIX_BTMAP_BEGIN = FIX_BTMAP_END + NR_FIX_BTMAPS*FIX_BTMAPS_NESTING - 1,
105 FIX_WP_TEST, 101 FIX_WP_TEST,
102#ifdef CONFIG_ACPI
103 FIX_ACPI_BEGIN,
104 FIX_ACPI_END = FIX_ACPI_BEGIN + FIX_ACPI_PAGES - 1,
105#endif
106#ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT 106#ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT
107 FIX_OHCI1394_BASE, 107 FIX_OHCI1394_BASE,
108#endif 108#endif
109 __end_of_fixed_addresses 109 __end_of_fixed_addresses
110}; 110};
111 111
112extern void __set_fixmap(enum fixed_addresses idx,
113 unsigned long phys, pgprot_t flags);
114extern void reserve_top_address(unsigned long reserve); 112extern void reserve_top_address(unsigned long reserve);
115 113
116#define set_fixmap(idx, phys) \
117 __set_fixmap(idx, phys, PAGE_KERNEL)
118/*
119 * Some hardware wants to get fixmapped without caching.
120 */
121#define set_fixmap_nocache(idx, phys) \
122 __set_fixmap(idx, phys, PAGE_KERNEL_NOCACHE)
123 114
124#define FIXADDR_TOP ((unsigned long)__FIXADDR_TOP) 115#define FIXADDR_TOP ((unsigned long)__FIXADDR_TOP)
125 116
@@ -128,38 +119,5 @@ extern void reserve_top_address(unsigned long reserve);
128#define FIXADDR_START (FIXADDR_TOP - __FIXADDR_SIZE) 119#define FIXADDR_START (FIXADDR_TOP - __FIXADDR_SIZE)
129#define FIXADDR_BOOT_START (FIXADDR_TOP - __FIXADDR_BOOT_SIZE) 120#define FIXADDR_BOOT_START (FIXADDR_TOP - __FIXADDR_BOOT_SIZE)
130 121
131#define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT))
132#define __virt_to_fix(x) ((FIXADDR_TOP - ((x)&PAGE_MASK)) >> PAGE_SHIFT)
133
134extern void __this_fixmap_does_not_exist(void);
135
136/*
137 * 'index to address' translation. If anyone tries to use the idx
138 * directly without tranlation, we catch the bug with a NULL-deference
139 * kernel oops. Illegal ranges of incoming indices are caught too.
140 */
141static __always_inline unsigned long fix_to_virt(const unsigned int idx)
142{
143 /*
144 * this branch gets completely eliminated after inlining,
145 * except when someone tries to use fixaddr indices in an
146 * illegal way. (such as mixing up address types or using
147 * out-of-range indices).
148 *
149 * If it doesn't get removed, the linker will complain
150 * loudly with a reasonably clear error message..
151 */
152 if (idx >= __end_of_fixed_addresses)
153 __this_fixmap_does_not_exist();
154
155 return __fix_to_virt(idx);
156}
157
158static inline unsigned long virt_to_fix(const unsigned long vaddr)
159{
160 BUG_ON(vaddr >= FIXADDR_TOP || vaddr < FIXADDR_START);
161 return __virt_to_fix(vaddr);
162}
163
164#endif /* !__ASSEMBLY__ */ 122#endif /* !__ASSEMBLY__ */
165#endif 123#endif