From 749805dc10e955b0170573061f9522a6a21cbae0 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Sun, 25 Jun 2006 23:24:24 -0700 Subject: [SPARC]: Add iomap interfaces. Signed-off-by: David S. Miller --- arch/sparc/lib/Makefile | 2 ++ arch/sparc/lib/iomap.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ include/asm-sparc/io.h | 16 ++++++++++++++++ 3 files changed, 66 insertions(+) create mode 100644 arch/sparc/lib/iomap.c diff --git a/arch/sparc/lib/Makefile b/arch/sparc/lib/Makefile index fa5006946062..5db7e1d85385 100644 --- a/arch/sparc/lib/Makefile +++ b/arch/sparc/lib/Makefile @@ -9,3 +9,5 @@ lib-y := mul.o rem.o sdiv.o udiv.o umul.o urem.o ashrdi3.o memcpy.o memset.o \ strncpy_from_user.o divdi3.o udivdi3.o strlen_user.o \ copy_user.o locks.o atomic.o atomic32.o bitops.o \ lshrdi3.o ashldi3.o rwsem.o muldi3.o bitext.o + +obj-y += iomap.o diff --git a/arch/sparc/lib/iomap.c b/arch/sparc/lib/iomap.c new file mode 100644 index 000000000000..54501c1ca785 --- /dev/null +++ b/arch/sparc/lib/iomap.c @@ -0,0 +1,48 @@ +/* + * Implement the sparc iomap interfaces + */ +#include +#include +#include + +/* Create a virtual mapping cookie for an IO port range */ +void __iomem *ioport_map(unsigned long port, unsigned int nr) +{ + return (void __iomem *) (unsigned long) port; +} + +void ioport_unmap(void __iomem *addr) +{ + /* Nothing to do */ +} +EXPORT_SYMBOL(ioport_map); +EXPORT_SYMBOL(ioport_unmap); + +/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */ +void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen) +{ + unsigned long start = pci_resource_start(dev, bar); + unsigned long len = pci_resource_len(dev, bar); + unsigned long flags = pci_resource_flags(dev, bar); + + if (!len || !start) + return NULL; + if (maxlen && len > maxlen) + len = maxlen; + if (flags & IORESOURCE_IO) + return ioport_map(start, len); + if (flags & IORESOURCE_MEM) { + if (flags & IORESOURCE_CACHEABLE) + return ioremap(start, len); + return ioremap_nocache(start, len); + } + /* What? */ + return NULL; +} + +void pci_iounmap(struct pci_dev *dev, void __iomem * addr) +{ + /* nothing to do */ +} +EXPORT_SYMBOL(pci_iomap); +EXPORT_SYMBOL(pci_iounmap); diff --git a/include/asm-sparc/io.h b/include/asm-sparc/io.h index a42df208d590..cab0b851b8b1 100644 --- a/include/asm-sparc/io.h +++ b/include/asm-sparc/io.h @@ -249,6 +249,22 @@ extern void __iomem *ioremap(unsigned long offset, unsigned long size); #define ioremap_nocache(X,Y) ioremap((X),(Y)) extern void iounmap(volatile void __iomem *addr); +#define ioread8(X) readb(X) +#define ioread16(X) readw(X) +#define ioread32(X) readl(X) +#define iowrite8(val,X) writeb(val,X) +#define iowrite16(val,X) writew(val,X) +#define iowrite32(val,X) writel(val,X) + +/* Create a virtual mapping cookie for an IO port range */ +extern void __iomem *ioport_map(unsigned long port, unsigned int nr); +extern void ioport_unmap(void __iomem *); + +/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */ +struct pci_dev; +extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max); +extern void pci_iounmap(struct pci_dev *dev, void __iomem *); + /* * Bus number may be in res->flags... somewhere. */ -- cgit v1.2.3-59-g8ed1b