diff options
| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2019-08-20 14:07:13 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-08-27 13:03:34 +1000 |
| commit | 14b4d97669b79d1ac83e64d6795098394e15ab1b (patch) | |
| tree | bec178156921fb5c0aabe6801b9d0eacd8ba4ee7 /arch/powerpc/mm | |
| parent | 492643e81e58e7585cccb22c37814060e3f59268 (diff) | |
| download | linux-14b4d97669b79d1ac83e64d6795098394e15ab1b.tar.bz2 | |
powerpc/mm: rework io-workaround invocation.
ppc_md.ioremap() is only used for I/O workaround on CELL platform,
so indirect function call can be avoided.
This patch reworks the io-workaround and ioremap() functions to
use the global 'io_workaround_inited' flag for the activation
of io-workaround.
When CONFIG_PPC_IO_WORKAROUNDS or CONFIG_PPC_INDIRECT_MMIO are not
selected, the I/O workaround ioremap() voids and the global flag is
not used.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/5fa3ef069fbd0f152512afaae19e7a60161454cf.1566309262.git.christophe.leroy@c-s.fr
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/pgtable_64.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c index 2882419737b9..0a147daeb0f2 100644 --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c @@ -35,6 +35,7 @@ #include <asm/page.h> #include <asm/prom.h> #include <asm/io.h> +#include <asm/io-workarounds.h> #include <asm/mmu_context.h> #include <asm/pgtable.h> #include <asm/mmu.h> @@ -208,8 +209,8 @@ void __iomem * ioremap(phys_addr_t addr, unsigned long size) pgprot_t prot = pgprot_noncached(PAGE_KERNEL); void *caller = __builtin_return_address(0); - if (ppc_md.ioremap) - return ppc_md.ioremap(addr, size, prot, caller); + if (iowa_is_active()) + return iowa_ioremap(addr, size, prot, caller); return __ioremap_caller(addr, size, prot, caller); } @@ -218,8 +219,8 @@ void __iomem * ioremap_wc(phys_addr_t addr, unsigned long size) pgprot_t prot = pgprot_noncached_wc(PAGE_KERNEL); void *caller = __builtin_return_address(0); - if (ppc_md.ioremap) - return ppc_md.ioremap(addr, size, prot, caller); + if (iowa_is_active()) + return iowa_ioremap(addr, size, prot, caller); return __ioremap_caller(addr, size, prot, caller); } @@ -228,8 +229,8 @@ void __iomem *ioremap_coherent(phys_addr_t addr, unsigned long size) pgprot_t prot = pgprot_cached(PAGE_KERNEL); void *caller = __builtin_return_address(0); - if (ppc_md.ioremap) - return ppc_md.ioremap(addr, size, prot, caller); + if (iowa_is_active()) + return iowa_ioremap(addr, size, prot, caller); return __ioremap_caller(addr, size, prot, caller); } @@ -250,8 +251,8 @@ void __iomem * ioremap_prot(phys_addr_t addr, unsigned long size, */ pte = pte_mkprivileged(pte); - if (ppc_md.ioremap) - return ppc_md.ioremap(addr, size, pte_pgprot(pte), caller); + if (iowa_is_active()) + return iowa_ioremap(addr, size, pte_pgprot(pte), caller); return __ioremap_caller(addr, size, pte_pgprot(pte), caller); } |