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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-15 09:26:42 +07:00
022ae537b2
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>
34 lines
677 B
C
34 lines
677 B
C
#ifdef CONFIG_MMU
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/* the upper-most page table pointer */
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extern pmd_t *top_pmd;
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#define TOP_PTE(x) pte_offset_kernel(top_pmd, x)
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static inline pmd_t *pmd_off_k(unsigned long virt)
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{
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return pmd_offset(pud_offset(pgd_offset_k(virt), virt), virt);
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}
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struct mem_type {
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pteval_t prot_pte;
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unsigned int prot_l1;
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unsigned int prot_sect;
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unsigned int domain;
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};
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const struct mem_type *get_mem_type(unsigned int type);
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extern void __flush_dcache_page(struct address_space *mapping, struct page *page);
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#endif
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#ifdef CONFIG_ZONE_DMA
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extern u32 arm_dma_limit;
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#else
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#define arm_dma_limit ((u32)~0)
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#endif
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void __init bootmem_init(void);
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void arm_mm_memblock_reserve(void);
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