diff options
| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-06-25 00:19:03 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-08 13:10:28 +0200 |
| commit | 4583ed514ea9ac844a6eb02d33120beaedf6837f (patch) | |
| tree | 9df2d1e1a5d1726303f761954593defc483e2d20 /include/asm-x86 | |
| parent | bb23e403e5162765dabe3dc78646724753d6359b (diff) | |
x86, 64-bit: unify early_ioremap
The 32-bit early_ioremap will work equally well for 64-bit, so just use it.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: xen-devel <xen-devel@lists.xensource.com>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86')
| -rw-r--r-- | include/asm-x86/fixmap_64.h | 13 | ||||
| -rw-r--r-- | include/asm-x86/io.h | 13 | ||||
| -rw-r--r-- | include/asm-x86/io_32.h | 12 |
3 files changed, 26 insertions, 12 deletions
diff --git a/include/asm-x86/fixmap_64.h b/include/asm-x86/fixmap_64.h index 626098823a0..c7dcc365f47 100644 --- a/include/asm-x86/fixmap_64.h +++ b/include/asm-x86/fixmap_64.h @@ -49,6 +49,19 @@ enum fixed_addresses { #ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT FIX_OHCI1394_BASE, #endif + __end_of_permanent_fixed_addresses, + /* + * 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, __end_of_fixed_addresses }; diff --git a/include/asm-x86/io.h b/include/asm-x86/io.h index 8e9eca93f9b..c63563df4ac 100644 --- a/include/asm-x86/io.h +++ b/include/asm-x86/io.h @@ -72,4 +72,17 @@ extern int ioremap_change_attr(unsigned long vaddr, unsigned long size, unsigned long prot_val); extern void __iomem *ioremap_wc(unsigned long offset, unsigned long size); +/* + * early_ioremap() and early_iounmap() are for temporary early boot-time + * mappings, before the real ioremap() is functional. + * A boot-time mapping is currently limited to at most 16 pages. + */ +extern void early_ioremap_init(void); +extern void early_ioremap_clear(void); +extern void early_ioremap_reset(void); +extern void *early_ioremap(unsigned long offset, unsigned long size); +extern void early_iounmap(void *addr, unsigned long size); +extern void __iomem *fix_ioremap(unsigned idx, unsigned long phys); + + #endif /* _ASM_X86_IO_H */ diff --git a/include/asm-x86/io_32.h b/include/asm-x86/io_32.h index d71be8df979..4df44ed5407 100644 --- a/include/asm-x86/io_32.h +++ b/include/asm-x86/io_32.h @@ -122,18 +122,6 @@ static inline void __iomem *ioremap(resource_size_t offset, unsigned long size) extern void iounmap(volatile void __iomem *addr); /* - * early_ioremap() and early_iounmap() are for temporary early boot-time - * mappings, before the real ioremap() is functional. - * A boot-time mapping is currently limited to at most 16 pages. - */ -extern void early_ioremap_init(void); -extern void early_ioremap_clear(void); -extern void early_ioremap_reset(void); -extern void *early_ioremap(unsigned long offset, unsigned long size); -extern void early_iounmap(void *addr, unsigned long size); -extern void __iomem *fix_ioremap(unsigned idx, unsigned long phys); - -/* * ISA I/O bus memory addresses are 1:1 with the physical address. */ #define isa_virt_to_bus virt_to_phys |