diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-04-16 17:00:07 +0200 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2020-04-19 16:09:44 +0200 |
| commit | d399157283fb457cdc3ae03f2897070f0bd5d7c6 (patch) | |
| tree | 9d1fa9bcaf39e0745bea2971353b7f158e1a9d38 /arch/mips/include/asm/pgtable.h | |
| parent | b604d4973af7df4bbe970b2c380f5a0477fa53ec (diff) | |
| download | linux-d399157283fb457cdc3ae03f2897070f0bd5d7c6.tar.gz linux-d399157283fb457cdc3ae03f2897070f0bd5d7c6.tar.bz2 linux-d399157283fb457cdc3ae03f2897070f0bd5d7c6.zip | |
MIPS: cleanup fixup_bigphys_addr handling
fixup_bigphys_addr is only provided by the alchemy platform. Remove
all the stubs, and ensure we only call it if it is actually implemented.
Also don't bother implementing io_remap_pfn_range if we don't have to,
and move the remaining implementation to alchemy platform code.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips/include/asm/pgtable.h')
| -rw-r--r-- | arch/mips/include/asm/pgtable.h | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h index f1801e7a4b15..aab0ec174f68 100644 --- a/arch/mips/include/asm/pgtable.h +++ b/arch/mips/include/asm/pgtable.h @@ -507,20 +507,17 @@ static inline void update_mmu_cache_pmd(struct vm_area_struct *vma, #define kern_addr_valid(addr) (1) -#ifdef CONFIG_PHYS_ADDR_T_64BIT -extern int remap_pfn_range(struct vm_area_struct *vma, unsigned long from, unsigned long pfn, unsigned long size, pgprot_t prot); - -static inline int io_remap_pfn_range(struct vm_area_struct *vma, - unsigned long vaddr, - unsigned long pfn, - unsigned long size, - pgprot_t prot) -{ - phys_addr_t phys_addr_high = fixup_bigphys_addr(pfn << PAGE_SHIFT, size); - return remap_pfn_range(vma, vaddr, phys_addr_high >> PAGE_SHIFT, size, prot); -} +/* + * Allow physical addresses to be fixed up to help 36-bit peripherals. + */ +#ifdef CONFIG_MIPS_FIXUP_BIGPHYS_ADDR +phys_addr_t fixup_bigphys_addr(phys_addr_t addr, phys_addr_t size); +int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long vaddr, + unsigned long pfn, unsigned long size, pgprot_t prot); #define io_remap_pfn_range io_remap_pfn_range -#endif +#else +#define fixup_bigphys_addr(addr, size) (addr) +#endif /* CONFIG_MIPS_FIXUP_BIGPHYS_ADDR */ #ifdef CONFIG_TRANSPARENT_HUGEPAGE |