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authorChristophe Leroy <christophe.leroy@c-s.fr>2018-10-09 16:51:33 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2018-10-13 14:21:25 +0300
commit86c391bd5f47101acf1f3e0abd9fe0616ae2a4fb (patch)
tree7fd0801b74451e47227947f6e6ba92b40018a917 /arch/powerpc/mm/pgtable_64.c
parentdfd718a2ed1f678e66749ffe41bdeafedf3f4314 (diff)
downloadlinux-86c391bd5f47101acf1f3e0abd9fe0616ae2a4fb.tar.xz
powerpc/32: Add ioremap_wt() and ioremap_coherent()
Other arches have ioremap_wt() to map IO areas write-through. Implement it on PPC as well in order to avoid drivers using __ioremap(_PAGE_WRITETHRU) Also implement ioremap_coherent() to avoid drivers using __ioremap(_PAGE_COHERENT) Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm/pgtable_64.c')
-rw-r--r--arch/powerpc/mm/pgtable_64.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c
index e15e63079ba8..c0f356d9b135 100644
--- a/arch/powerpc/mm/pgtable_64.c
+++ b/arch/powerpc/mm/pgtable_64.c
@@ -222,6 +222,16 @@ void __iomem * ioremap_wc(phys_addr_t addr, unsigned long size)
return __ioremap_caller(addr, size, flags, caller);
}
+void __iomem *ioremap_coherent(phys_addr_t addr, unsigned long size)
+{
+ unsigned long flags = pgprot_val(pgprot_cached(__pgprot(0)));
+ void *caller = __builtin_return_address(0);
+
+ if (ppc_md.ioremap)
+ return ppc_md.ioremap(addr, size, flags, caller);
+ return __ioremap_caller(addr, size, flags, caller);
+}
+
void __iomem * ioremap_prot(phys_addr_t addr, unsigned long size,
unsigned long flags)
{