[PATCH 6/6] m68k/nommu: stop using GENERIC_IOMAP
Arnd Bergmann <[email protected]>
| Newsgroups | gmane.linux.ports.ppc.embedded,gmane.linux.kernel.cross-arch,gmane.linux.ports.alpha,gmane.linux.kernel,gmane.linux.ports.mips,gmane.linux.ports.parisc,gmane.linux.ports.sh.devel |
|---|---|
| Message-ID | <[email protected]> |
From: Arnd Bergmann <[email protected]> There is no need to go through the GENERIC_IOMAP wrapper for PIO on nommu platforms, since these always come from PCI I/O space that is itself memory mapped. Instead, the generic ioport_map() can just return the MMIO location of the ports directly by applying the PCI_IO_PA offset, while ioread32/iowrite32 trivially turn into readl/writel as they do on most other architectures. Signed-off-by: Arnd Bergmann <[email protected]> --- arch/m68k/Kconfig | 2 +- arch/m68k/include/asm/io_no.h | 4 ---- 2 files changed, 1 insertion(+), 5 deletions(-) diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index b2ed0308c0ea..b50c275fa94d 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -18,7 +18,7 @@ config M68K select DMA_DIRECT_REMAP if M68K_NONCOHERENT_DMA && !COLDFIRE select GENERIC_ATOMIC64 select GENERIC_CPU_DEVICES - select GENERIC_IOMAP if HAS_IOPORT + select GENERIC_IOMAP if HAS_IOPORT && MMU select GENERIC_IRQ_SHOW select GENERIC_LIB_ASHLDI3 select GENERIC_LIB_ASHRDI3 diff --git a/arch/m68k/include/asm/io_no.h b/arch/m68k/include/asm/io_no.h index 2c96e8480173..516371d5587a 100644 --- a/arch/m68k/include/asm/io_no.h +++ b/arch/m68k/include/asm/io_no.h @@ -123,10 +123,6 @@ static inline void writel(u32 value, volatile void __iomem *addr) #define PCI_IO_SIZE 0x00010000 /* 64k */ #define PCI_IO_MASK (PCI_IO_SIZE - 1) -#define HAVE_ARCH_PIO_SIZE -#define PIO_OFFSET 0 -#define PIO_MASK 0xffff -#define PIO_RESERVED 0x10000 #define PCI_IOBASE ((void __iomem *) PCI_IO_PA) #define PCI_SPACE_LIMIT PCI_IO_MASK #endif /* CONFIG_PCI */ -- 2.39.5