Converting the mvme147 SCSI driver to the DMA API requires use of ioremap() in order to get the kernel virtual address of the WD chip registers. Add support for transparent mapping of the mvme147 MMIO region to arch/m68k/mm/kmap.c to enable use of ioremap() in that driver. Link: https://lore.kernel.org/r/6d1d88ee-1cf6-c735-1e6d-bafd2096e322@xxxxxxxxx Signed-off-by: Michael Schmitz <schmitzmic@xxxxxxxxx> --- arch/m68k/mm/kmap.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/m68k/mm/kmap.c b/arch/m68k/mm/kmap.c index 7594a945732b..2bcede2af902 100644 --- a/arch/m68k/mm/kmap.c +++ b/arch/m68k/mm/kmap.c @@ -185,6 +185,13 @@ void __iomem *__ioremap(unsigned long physaddr, unsigned long size, int cachefla return (void __iomem *)physaddr; } #endif +#ifdef CONFIG_MVME147 + if (MACH_IS_MVME147) { + if (physaddr >= 0xe0000000 && cacheflag == IOMAP_NOCACHE_SER) + return (void __iomem *)physaddr; + } +#endif + #ifdef CONFIG_COLDFIRE if (__cf_internalio(physaddr)) return (void __iomem *) physaddr; @@ -308,6 +315,10 @@ void iounmap(void __iomem *addr) if (MACH_IS_VIRT && (unsigned long)addr >= 0xff000000) return; #endif +#ifdef CONFIG_MVME147 + if (MACH_IS_MVME147 && (unsigned long)addr >= 0xe000000) + return; +#endif #ifdef CONFIG_COLDFIRE if (cf_internalio(addr)) return; -- 2.17.1
