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OpenCloudOS-Kernel/arch/arm/mm/mm.h

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[ARM] Fix nommu build Fix warnings and errors in arch/arm/mm for nommu build. Remove commented out function prototype in pgtable-nommu.h Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-11-30 21:53:54 +08:00
#ifdef CONFIG_MMU
[ARM] fixmap support This is the minimum fixmap interface expected to be implemented by architectures supporting highmem. We have a second level page table already allocated and covering 0xfff00000-0xffffffff because the exception vector page is located at 0xffff0000, and various cache tricks already use some entries above 0xffff0000. Therefore the PTEs covering 0xfff00000-0xfffeffff are free to be used. However the XScale cache flushing code already uses virtual addresses between 0xfffe0000 and 0xfffeffff. So this reserves the 0xfff00000-0xfffdffff range for fixmap stuff. The Documentation/arm/memory.txt information is updated accordingly, including the information about the actual top of DMA memory mapping region which didn't match the code. Signed-off-by: Nicolas Pitre <nico@marvell.com>
2008-09-17 01:05:53 +08:00
/* the upper-most page table pointer */
[ARM] Cleanup arch/arm/mm a little Move top_pmd into arch/arm/mm/mm.h - nothing outside arch/arm/mm references it. Move the repeated definition of TOP_PTE into mm/mm.h, as well as a few function prototypes. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-08-22 00:06:38 +08:00
extern pmd_t *top_pmd;
#define TOP_PTE(x) pte_offset_kernel(top_pmd, x)
static inline pmd_t *pmd_off_k(unsigned long virt)
{
ARM: kill pmd_off() pmd_off() has only one user, so lets consolidate this into its only user. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-27 02:50:30 +08:00
return pmd_offset(pud_offset(pgd_offset_k(virt), virt), virt);
[ARM] Cleanup arch/arm/mm a little Move top_pmd into arch/arm/mm/mm.h - nothing outside arch/arm/mm references it. Move the repeated definition of TOP_PTE into mm/mm.h, as well as a few function prototypes. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-08-22 00:06:38 +08:00
}
[ARM] mm 5: Use mem_types table in ioremap We really want to be using the memory type table in ioremap, so we only have to do the CPU type fixups in one place. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-21 17:47:29 +08:00
struct mem_type {
ARM: pgtable: introduce pteval_t to represent a pte value This makes everywhere dealing with pte values use the same type. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-11-16 08:22:09 +08:00
pteval_t prot_pte;
[ARM] mm 5: Use mem_types table in ioremap We really want to be using the memory type table in ioremap, so we only have to do the CPU type fixups in one place. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-21 17:47:29 +08:00
unsigned int prot_l1;
unsigned int prot_sect;
unsigned int domain;
};
const struct mem_type *get_mem_type(unsigned int type);
ARM: Reduce __flush_dcache_page() visibility Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-24 21:11:59 +08:00
extern void __flush_dcache_page(struct address_space *mapping, struct page *page);
[ARM] Fix nommu build Fix warnings and errors in arch/arm/mm for nommu build. Remove commented out function prototype in pgtable-nommu.h Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-11-30 21:53:54 +08:00
#endif
ARM: dma: replace ISA_DMA_THRESHOLD with a variable ISA_DMA_THRESHOLD has been unused by non-arch code, so lets now get rid of it from ARM by replacing it with arm_dma_zone_mask. Move dma_supported() and dma_set_mask() out of line, and have dma_supported() check this new variable instead. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-09 04:26:59 +08:00
#ifdef CONFIG_ZONE_DMA
extern u32 arm_dma_limit;
#else
#define arm_dma_limit ((u32)~0)
#endif
ARM: Convert platform reservations to use LMB rather than bootmem Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-05-23 02:47:18 +08:00
void __init bootmem_init(void);
ARM: initial LMB trial Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-07-09 23:27:52 +08:00
void arm_mm_memblock_reserve(void);