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MIPS: cleanup fixup_bigphys_addr handling

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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>
This commit is contained in:
Christoph Hellwig
2020-04-16 17:00:07 +02:00
committed by Thomas Bogendoerfer
parent b604d4973a
commit d399157283
10 changed files with 27 additions and 93 deletions
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16
arch/mips/alchemy/common/setup.c
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@@ -72,9 +72,9 @@ void __init plat_mem_setup(void)
iomem_resource.end = IOMEM_RESOURCE_END;
}
#if defined(CONFIG_PHYS_ADDR_T_64BIT) && defined(CONFIG_PCI)
#ifdef CONFIG_MIPS_FIXUP_BIGPHYS_ADDR
/* This routine should be valid for all Au1x based boards */
phys_addr_t __fixup_bigphys_addr(phys_addr_t phys_addr, phys_addr_t size)
phys_addr_t fixup_bigphys_addr(phys_addr_t phys_addr, phys_addr_t size)
{
unsigned long start = ALCHEMY_PCI_MEMWIN_START;
unsigned long end = ALCHEMY_PCI_MEMWIN_END;
@@ -90,5 +90,13 @@ phys_addr_t __fixup_bigphys_addr(phys_addr_t phys_addr, phys_addr_t size)
/* default nop */
return phys_addr;
}
EXPORT_SYMBOL(__fixup_bigphys_addr);
#endif
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 = fixup_bigphys_addr(pfn << PAGE_SHIFT, size);
return remap_pfn_range(vma, vaddr, phys_addr >> PAGE_SHIFT, size, prot);
}
EXPORT_SYMBOL(io_remap_pfn_range);
#endif /* CONFIG_MIPS_FIXUP_BIGPHYS_ADDR */