| Message ID | 20191029064834.23438-8-hch@lst.de (mailing list archive) |
|---|---|
| State | Not Applicable |
| Delegated to: | Paul Burton |
| Headers | show |
| Series | [01/21] arm: remove ioremap_cached | expand |
On 29.10.19 07:48, Christoph Hellwig wrote: > __ioremap is always called with the _PAGE_NO_CACHE, so fold the whole > thing and rename it to ioremap. This also allows to remove the special > EISA quirk to force _PAGE_NO_CACHE. > > Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Helge Deller <deller@gmx.de> Helge > --- > arch/parisc/include/asm/io.h | 11 +---------- > arch/parisc/mm/ioremap.c | 10 ++++------ > 2 files changed, 5 insertions(+), 16 deletions(-) > > diff --git a/arch/parisc/include/asm/io.h b/arch/parisc/include/asm/io.h > index 93d37010b375..46212b52c23e 100644 > --- a/arch/parisc/include/asm/io.h > +++ b/arch/parisc/include/asm/io.h > @@ -127,16 +127,7 @@ static inline void gsc_writeq(unsigned long long val, unsigned long addr) > /* > * The standard PCI ioremap interfaces > */ > - > -extern void __iomem * __ioremap(unsigned long offset, unsigned long size, unsigned long flags); > - > -/* Most machines react poorly to I/O-space being cacheable... Instead let's > - * define ioremap() in terms of ioremap_nocache(). > - */ > -static inline void __iomem * ioremap(unsigned long offset, unsigned long size) > -{ > - return __ioremap(offset, size, _PAGE_NO_CACHE); > -} > +void __iomem *ioremap(unsigned long offset, unsigned long size); > #define ioremap_nocache(off, sz) ioremap((off), (sz)) > #define ioremap_wc ioremap_nocache > #define ioremap_uc ioremap_nocache > diff --git a/arch/parisc/mm/ioremap.c b/arch/parisc/mm/ioremap.c > index f29f682352f0..6e7c005aa09b 100644 > --- a/arch/parisc/mm/ioremap.c > +++ b/arch/parisc/mm/ioremap.c > @@ -25,7 +25,7 @@ > * have to convert them into an offset in a page-aligned mapping, but the > * caller shouldn't need to know that small detail. > */ > -void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags) > +void __iomem *ioremap(unsigned long phys_addr, unsigned long size) > { > void __iomem *addr; > struct vm_struct *area; > @@ -36,10 +36,8 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l > unsigned long end = phys_addr + size - 1; > /* Support EISA addresses */ > if ((phys_addr >= 0x00080000 && end < 0x000fffff) || > - (phys_addr >= 0x00500000 && end < 0x03bfffff)) { > + (phys_addr >= 0x00500000 && end < 0x03bfffff)) > phys_addr |= F_EXTEND(0xfc000000); > - flags |= _PAGE_NO_CACHE; > - } > #endif > > /* Don't allow wraparound or zero size */ > @@ -65,7 +63,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l > } > > pgprot = __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | > - _PAGE_ACCESSED | flags); > + _PAGE_ACCESSED | _PAGE_NO_CACHE); > > /* > * Mappings have to be page-aligned > @@ -90,7 +88,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l > > return (void __iomem *) (offset + (char __iomem *)addr); > } > -EXPORT_SYMBOL(__ioremap); > +EXPORT_SYMBOL(ioremap); > > void iounmap(const volatile void __iomem *io_addr) > { >
diff --git a/arch/parisc/include/asm/io.h b/arch/parisc/include/asm/io.h index 93d37010b375..46212b52c23e 100644 --- a/arch/parisc/include/asm/io.h +++ b/arch/parisc/include/asm/io.h @@ -127,16 +127,7 @@ static inline void gsc_writeq(unsigned long long val, unsigned long addr) /* * The standard PCI ioremap interfaces */ - -extern void __iomem * __ioremap(unsigned long offset, unsigned long size, unsigned long flags); - -/* Most machines react poorly to I/O-space being cacheable... Instead let's - * define ioremap() in terms of ioremap_nocache(). - */ -static inline void __iomem * ioremap(unsigned long offset, unsigned long size) -{ - return __ioremap(offset, size, _PAGE_NO_CACHE); -} +void __iomem *ioremap(unsigned long offset, unsigned long size); #define ioremap_nocache(off, sz) ioremap((off), (sz)) #define ioremap_wc ioremap_nocache #define ioremap_uc ioremap_nocache diff --git a/arch/parisc/mm/ioremap.c b/arch/parisc/mm/ioremap.c index f29f682352f0..6e7c005aa09b 100644 --- a/arch/parisc/mm/ioremap.c +++ b/arch/parisc/mm/ioremap.c @@ -25,7 +25,7 @@ * have to convert them into an offset in a page-aligned mapping, but the * caller shouldn't need to know that small detail. */ -void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags) +void __iomem *ioremap(unsigned long phys_addr, unsigned long size) { void __iomem *addr; struct vm_struct *area; @@ -36,10 +36,8 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l unsigned long end = phys_addr + size - 1; /* Support EISA addresses */ if ((phys_addr >= 0x00080000 && end < 0x000fffff) || - (phys_addr >= 0x00500000 && end < 0x03bfffff)) { + (phys_addr >= 0x00500000 && end < 0x03bfffff)) phys_addr |= F_EXTEND(0xfc000000); - flags |= _PAGE_NO_CACHE; - } #endif /* Don't allow wraparound or zero size */ @@ -65,7 +63,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l } pgprot = __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | - _PAGE_ACCESSED | flags); + _PAGE_ACCESSED | _PAGE_NO_CACHE); /* * Mappings have to be page-aligned @@ -90,7 +88,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l return (void __iomem *) (offset + (char __iomem *)addr); } -EXPORT_SYMBOL(__ioremap); +EXPORT_SYMBOL(ioremap); void iounmap(const volatile void __iomem *io_addr) {
__ioremap is always called with the _PAGE_NO_CACHE, so fold the whole thing and rename it to ioremap. This also allows to remove the special EISA quirk to force _PAGE_NO_CACHE. Signed-off-by: Christoph Hellwig <hch@lst.de> --- arch/parisc/include/asm/io.h | 11 +---------- arch/parisc/mm/ioremap.c | 10 ++++------ 2 files changed, 5 insertions(+), 16 deletions(-)