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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2005-06-20 17:44:37 (GMT) |
|---|---|---|
| committer | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2005-06-20 17:44:37 (GMT) |
| commit | 09f0551d20ddf6d22c333adcc59f2b1148734273 (patch) | |
| tree | 321c877843fc24ef6047225569a66479d9d6269b | |
| parent | a507ef3ac68f0671fdd3f824885cd7f1ea1040b1 (diff) | |
| download | linux-09f0551d20ddf6d22c333adcc59f2b1148734273.tar.xz | |
[PATCH] ARM: Add iomap support for ARM
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/Kconfig | 4 | ||||
| -rw-r--r-- | arch/arm/mm/ioremap.c | 47 | ||||
| -rw-r--r-- | include/asm-arm/io.h | 27 |
3 files changed, 74 insertions, 4 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 475950c..1a1773f 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -67,10 +67,6 @@ config GENERIC_BUST_SPINLOCK config GENERIC_ISA_DMA bool -config GENERIC_IOMAP - bool - default y - config FIQ bool diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c index 00bb8fd..7110e54 100644 --- a/arch/arm/mm/ioremap.c +++ b/arch/arm/mm/ioremap.c @@ -170,3 +170,50 @@ void __iounmap(void __iomem *addr) vfree((void *) (PAGE_MASK & (unsigned long) addr)); } EXPORT_SYMBOL(__iounmap); + +#ifdef __io +void __iomem *ioport_map(unsigned long port, unsigned int nr) +{ + return __io(port); +} +EXPORT_SYMBOL(ioport_map); + +void ioport_unmap(void __iomem *addr) +{ +} +EXPORT_SYMBOL(ioport_unmap); +#endif + +#ifdef CONFIG_PCI +#include <linux/pci.h> +#include <linux/ioport.h> + +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); + } + return NULL; +} +EXPORT_SYMBOL(pci_iomap); + +void pci_iounmap(struct pci_dev *dev, void __iomem *addr) +{ + if ((unsigned long)addr >= VMALLOC_START && + (unsigned long)addr < VMALLOC_END) + iounmap(addr); +} +EXPORT_SYMBOL(pci_iounmap); +#endif diff --git a/include/asm-arm/io.h b/include/asm-arm/io.h index 658ffa3..08a4630 100644 --- a/include/asm-arm/io.h +++ b/include/asm-arm/io.h @@ -273,6 +273,33 @@ extern void __iounmap(void __iomem *addr); #endif /* + * io{read,write}{8,16,32} macros + */ +#define ioread8(p) ({ unsigned int __v = __raw_readb(p); __v; }) +#define ioread16(p) ({ unsigned int __v = le16_to_cpu(__raw_readw(p)); __v; }) +#define ioread32(p) ({ unsigned int __v = le32_to_cpu(__raw_readl(p)); __v; }) + +#define iowrite8(v,p) __raw_writeb(v, p) +#define iowrite16(v,p) __raw_writew(cpu_to_le16(v), p) +#define iowrite32(v,p) __raw_writel(cpu_to_le32(v), p) + +#define ioread8_rep(p,d,c) __raw_readsb(p,d,c) +#define ioread16_rep(p,d,c) __raw_readsw(p,d,c) +#define ioread32_rep(p,d,c) __raw_readsl(p,d,c) + +#define iowrite8_rep(p,s,c) __raw_writesb(p,s,c) +#define iowrite16_rep(p,s,c) __raw_writesw(p,s,c) +#define iowrite32_rep(p,s,c) __raw_writesl(p,s,c) + +extern void __iomem *ioport_map(unsigned long port, unsigned int nr); +extern void ioport_unmap(void __iomem *addr); + +struct pci_dev; + +extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen); +extern void pci_iounmap(struct pci_dev *dev, void __iomem *addr); + +/* * can the hardware map this into one segment or not, given no other * constraints. */ |