diff options
Diffstat (limited to 'arch/powerpc/kernel/iomap.c')
| -rw-r--r-- | arch/powerpc/kernel/iomap.c | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/iomap.c b/arch/powerpc/kernel/iomap.c new file mode 100644 index 000000000..9fe4fb3b0 --- /dev/null +++ b/arch/powerpc/kernel/iomap.c @@ -0,0 +1,197 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * ppc64 "iomap" interface implementation. + * + * (C) Copyright 2004 Linus Torvalds + */ +#include <linux/pci.h> +#include <linux/mm.h> +#include <linux/export.h> +#include <asm/io.h> +#include <asm/pci-bridge.h> +#include <asm/isa-bridge.h> + +/* + * Here comes the ppc64 implementation of the IOMAP + * interfaces. + */ +unsigned int ioread8(const void __iomem *addr) +{ + return readb(addr); +} +unsigned int ioread16(const void __iomem *addr) +{ + return readw(addr); +} +unsigned int ioread16be(const void __iomem *addr) +{ + return readw_be(addr); +} +unsigned int ioread32(const void __iomem *addr) +{ + return readl(addr); +} +unsigned int ioread32be(const void __iomem *addr) +{ + return readl_be(addr); +} +EXPORT_SYMBOL(ioread8); +EXPORT_SYMBOL(ioread16); +EXPORT_SYMBOL(ioread16be); +EXPORT_SYMBOL(ioread32); +EXPORT_SYMBOL(ioread32be); +#ifdef __powerpc64__ +u64 ioread64(const void __iomem *addr) +{ + return readq(addr); +} +u64 ioread64_lo_hi(const void __iomem *addr) +{ + return readq(addr); +} +u64 ioread64_hi_lo(const void __iomem *addr) +{ + return readq(addr); +} +u64 ioread64be(const void __iomem *addr) +{ + return readq_be(addr); +} +u64 ioread64be_lo_hi(const void __iomem *addr) +{ + return readq_be(addr); +} +u64 ioread64be_hi_lo(const void __iomem *addr) +{ + return readq_be(addr); +} +EXPORT_SYMBOL(ioread64); +EXPORT_SYMBOL(ioread64_lo_hi); +EXPORT_SYMBOL(ioread64_hi_lo); +EXPORT_SYMBOL(ioread64be); +EXPORT_SYMBOL(ioread64be_lo_hi); +EXPORT_SYMBOL(ioread64be_hi_lo); +#endif /* __powerpc64__ */ + +void iowrite8(u8 val, void __iomem *addr) +{ + writeb(val, addr); +} +void iowrite16(u16 val, void __iomem *addr) +{ + writew(val, addr); +} +void iowrite16be(u16 val, void __iomem *addr) +{ + writew_be(val, addr); +} +void iowrite32(u32 val, void __iomem *addr) +{ + writel(val, addr); +} +void iowrite32be(u32 val, void __iomem *addr) +{ + writel_be(val, addr); +} +EXPORT_SYMBOL(iowrite8); +EXPORT_SYMBOL(iowrite16); +EXPORT_SYMBOL(iowrite16be); +EXPORT_SYMBOL(iowrite32); +EXPORT_SYMBOL(iowrite32be); +#ifdef __powerpc64__ +void iowrite64(u64 val, void __iomem *addr) +{ + writeq(val, addr); +} +void iowrite64_lo_hi(u64 val, void __iomem *addr) +{ + writeq(val, addr); +} +void iowrite64_hi_lo(u64 val, void __iomem *addr) +{ + writeq(val, addr); +} +void iowrite64be(u64 val, void __iomem *addr) +{ + writeq_be(val, addr); +} +void iowrite64be_lo_hi(u64 val, void __iomem *addr) +{ + writeq_be(val, addr); +} +void iowrite64be_hi_lo(u64 val, void __iomem *addr) +{ + writeq_be(val, addr); +} +EXPORT_SYMBOL(iowrite64); +EXPORT_SYMBOL(iowrite64_lo_hi); +EXPORT_SYMBOL(iowrite64_hi_lo); +EXPORT_SYMBOL(iowrite64be); +EXPORT_SYMBOL(iowrite64be_lo_hi); +EXPORT_SYMBOL(iowrite64be_hi_lo); +#endif /* __powerpc64__ */ + +/* + * These are the "repeat read/write" functions. Note the + * non-CPU byte order. We do things in "IO byteorder" + * here. + * + * FIXME! We could make these do EEH handling if we really + * wanted. Not clear if we do. + */ +void ioread8_rep(const void __iomem *addr, void *dst, unsigned long count) +{ + readsb(addr, dst, count); +} +void ioread16_rep(const void __iomem *addr, void *dst, unsigned long count) +{ + readsw(addr, dst, count); +} +void ioread32_rep(const void __iomem *addr, void *dst, unsigned long count) +{ + readsl(addr, dst, count); +} +EXPORT_SYMBOL(ioread8_rep); +EXPORT_SYMBOL(ioread16_rep); +EXPORT_SYMBOL(ioread32_rep); + +void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count) +{ + writesb(addr, src, count); +} +void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count) +{ + writesw(addr, src, count); +} +void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count) +{ + writesl(addr, src, count); +} +EXPORT_SYMBOL(iowrite8_rep); +EXPORT_SYMBOL(iowrite16_rep); +EXPORT_SYMBOL(iowrite32_rep); + +void __iomem *ioport_map(unsigned long port, unsigned int len) +{ + return (void __iomem *) (port + _IO_BASE); +} + +void ioport_unmap(void __iomem *addr) +{ + /* Nothing to do */ +} +EXPORT_SYMBOL(ioport_map); +EXPORT_SYMBOL(ioport_unmap); + +#ifdef CONFIG_PCI +void pci_iounmap(struct pci_dev *dev, void __iomem *addr) +{ + if (isa_vaddr_is_ioport(addr)) + return; + if (pcibios_vaddr_is_ioport(addr)) + return; + iounmap(addr); +} + +EXPORT_SYMBOL(pci_iounmap); +#endif /* CONFIG_PCI */ |