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authorChristoph Hellwig <hch@lst.de>2020-04-16 18:00:07 +0300
committerThomas Bogendoerfer <tsbogend@alpha.franken.de>2020-04-19 17:09:44 +0300
commitd399157283fb457cdc3ae03f2897070f0bd5d7c6 (patch)
tree9d1fa9bcaf39e0745bea2971353b7f158e1a9d38 /arch/mips/alchemy
parentb604d4973af7df4bbe970b2c380f5a0477fa53ec (diff)
downloadlinux-d399157283fb457cdc3ae03f2897070f0bd5d7c6.tar.xz
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/alchemy')
-rw-r--r--arch/mips/alchemy/common/setup.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/arch/mips/alchemy/common/setup.c b/arch/mips/alchemy/common/setup.c
index 7faaa6d593a7..a8cbc552bd64 100644
--- a/arch/mips/alchemy/common/setup.c
+++ b/arch/mips/alchemy/common/setup.c
@@ -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 */