From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/parisc/lib/iomap.c | 464 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 464 insertions(+) create mode 100644 kernel/arch/parisc/lib/iomap.c (limited to 'kernel/arch/parisc/lib/iomap.c') diff --git a/kernel/arch/parisc/lib/iomap.c b/kernel/arch/parisc/lib/iomap.c new file mode 100644 index 000000000..fb8e10a4f --- /dev/null +++ b/kernel/arch/parisc/lib/iomap.c @@ -0,0 +1,464 @@ +/* + * iomap.c - Implement iomap interface for PA-RISC + * Copyright (c) 2004 Matthew Wilcox + */ + +#include +#include +#include +#include + +/* + * The iomap space on 32-bit PA-RISC is intended to look like this: + * 00000000-7fffffff virtual mapped IO + * 80000000-8fffffff ISA/EISA port space that can't be virtually mapped + * 90000000-9fffffff Dino port space + * a0000000-afffffff Astro port space + * b0000000-bfffffff PAT port space + * c0000000-cfffffff non-swapped memory IO + * f0000000-ffffffff legacy IO memory pointers + * + * For the moment, here's what it looks like: + * 80000000-8fffffff All ISA/EISA port space + * f0000000-ffffffff legacy IO memory pointers + * + * On 64-bit, everything is extended, so: + * 8000000000000000-8fffffffffffffff All ISA/EISA port space + * f000000000000000-ffffffffffffffff legacy IO memory pointers + */ + +/* + * Technically, this should be 'if (VMALLOC_START < addr < VMALLOC_END), + * but that's slow and we know it'll be within the first 2GB. + */ +#ifdef CONFIG_64BIT +#define INDIRECT_ADDR(addr) (((unsigned long)(addr) & 1UL<<63) != 0) +#define ADDR_TO_REGION(addr) (((unsigned long)addr >> 60) & 7) +#define IOPORT_MAP_BASE (8UL << 60) +#else +#define INDIRECT_ADDR(addr) (((unsigned long)(addr) & 1UL<<31) != 0) +#define ADDR_TO_REGION(addr) (((unsigned long)addr >> 28) & 7) +#define IOPORT_MAP_BASE (8UL << 28) +#endif + +struct iomap_ops { + unsigned int (*read8)(void __iomem *); + unsigned int (*read16)(void __iomem *); + unsigned int (*read16be)(void __iomem *); + unsigned int (*read32)(void __iomem *); + unsigned int (*read32be)(void __iomem *); + void (*write8)(u8, void __iomem *); + void (*write16)(u16, void __iomem *); + void (*write16be)(u16, void __iomem *); + void (*write32)(u32, void __iomem *); + void (*write32be)(u32, void __iomem *); + void (*read8r)(void __iomem *, void *, unsigned long); + void (*read16r)(void __iomem *, void *, unsigned long); + void (*read32r)(void __iomem *, void *, unsigned long); + void (*write8r)(void __iomem *, const void *, unsigned long); + void (*write16r)(void __iomem *, const void *, unsigned long); + void (*write32r)(void __iomem *, const void *, unsigned long); +}; + +/* Generic ioport ops. To be replaced later by specific dino/elroy/wax code */ + +#define ADDR2PORT(addr) ((unsigned long __force)(addr) & 0xffffff) + +static unsigned int ioport_read8(void __iomem *addr) +{ + return inb(ADDR2PORT(addr)); +} + +static unsigned int ioport_read16(void __iomem *addr) +{ + return inw(ADDR2PORT(addr)); +} + +static unsigned int ioport_read32(void __iomem *addr) +{ + return inl(ADDR2PORT(addr)); +} + +static void ioport_write8(u8 datum, void __iomem *addr) +{ + outb(datum, ADDR2PORT(addr)); +} + +static void ioport_write16(u16 datum, void __iomem *addr) +{ + outw(datum, ADDR2PORT(addr)); +} + +static void ioport_write32(u32 datum, void __iomem *addr) +{ + outl(datum, ADDR2PORT(addr)); +} + +static void ioport_read8r(void __iomem *addr, void *dst, unsigned long count) +{ + insb(ADDR2PORT(addr), dst, count); +} + +static void ioport_read16r(void __iomem *addr, void *dst, unsigned long count) +{ + insw(ADDR2PORT(addr), dst, count); +} + +static void ioport_read32r(void __iomem *addr, void *dst, unsigned long count) +{ + insl(ADDR2PORT(addr), dst, count); +} + +static void ioport_write8r(void __iomem *addr, const void *s, unsigned long n) +{ + outsb(ADDR2PORT(addr), s, n); +} + +static void ioport_write16r(void __iomem *addr, const void *s, unsigned long n) +{ + outsw(ADDR2PORT(addr), s, n); +} + +static void ioport_write32r(void __iomem *addr, const void *s, unsigned long n) +{ + outsl(ADDR2PORT(addr), s, n); +} + +static const struct iomap_ops ioport_ops = { + ioport_read8, + ioport_read16, + ioport_read16, + ioport_read32, + ioport_read32, + ioport_write8, + ioport_write16, + ioport_write16, + ioport_write32, + ioport_write32, + ioport_read8r, + ioport_read16r, + ioport_read32r, + ioport_write8r, + ioport_write16r, + ioport_write32r, +}; + +/* Legacy I/O memory ops */ + +static unsigned int iomem_read8(void __iomem *addr) +{ + return readb(addr); +} + +static unsigned int iomem_read16(void __iomem *addr) +{ + return readw(addr); +} + +static unsigned int iomem_read16be(void __iomem *addr) +{ + return __raw_readw(addr); +} + +static unsigned int iomem_read32(void __iomem *addr) +{ + return readl(addr); +} + +static unsigned int iomem_read32be(void __iomem *addr) +{ + return __raw_readl(addr); +} + +static void iomem_write8(u8 datum, void __iomem *addr) +{ + writeb(datum, addr); +} + +static void iomem_write16(u16 datum, void __iomem *addr) +{ + writew(datum, addr); +} + +static void iomem_write16be(u16 datum, void __iomem *addr) +{ + __raw_writew(datum, addr); +} + +static void iomem_write32(u32 datum, void __iomem *addr) +{ + writel(datum, addr); +} + +static void iomem_write32be(u32 datum, void __iomem *addr) +{ + __raw_writel(datum, addr); +} + +static void iomem_read8r(void __iomem *addr, void *dst, unsigned long count) +{ + while (count--) { + *(u8 *)dst = __raw_readb(addr); + dst++; + } +} + +static void iomem_read16r(void __iomem *addr, void *dst, unsigned long count) +{ + while (count--) { + *(u16 *)dst = __raw_readw(addr); + dst += 2; + } +} + +static void iomem_read32r(void __iomem *addr, void *dst, unsigned long count) +{ + while (count--) { + *(u32 *)dst = __raw_readl(addr); + dst += 4; + } +} + +static void iomem_write8r(void __iomem *addr, const void *s, unsigned long n) +{ + while (n--) { + __raw_writeb(*(u8 *)s, addr); + s++; + } +} + +static void iomem_write16r(void __iomem *addr, const void *s, unsigned long n) +{ + while (n--) { + __raw_writew(*(u16 *)s, addr); + s += 2; + } +} + +static void iomem_write32r(void __iomem *addr, const void *s, unsigned long n) +{ + while (n--) { + __raw_writel(*(u32 *)s, addr); + s += 4; + } +} + +static const struct iomap_ops iomem_ops = { + iomem_read8, + iomem_read16, + iomem_read16be, + iomem_read32, + iomem_read32be, + iomem_write8, + iomem_write16, + iomem_write16be, + iomem_write32, + iomem_write32be, + iomem_read8r, + iomem_read16r, + iomem_read32r, + iomem_write8r, + iomem_write16r, + iomem_write32r, +}; + +static const struct iomap_ops *iomap_ops[8] = { + [0] = &ioport_ops, + [7] = &iomem_ops +}; + + +unsigned int ioread8(void __iomem *addr) +{ + if (unlikely(INDIRECT_ADDR(addr))) + return iomap_ops[ADDR_TO_REGION(addr)]->read8(addr); + return *((u8 *)addr); +} + +unsigned int ioread16(void __iomem *addr) +{ + if (unlikely(INDIRECT_ADDR(addr))) + return iomap_ops[ADDR_TO_REGION(addr)]->read16(addr); + return le16_to_cpup((u16 *)addr); +} + +unsigned int ioread16be(void __iomem *addr) +{ + if (unlikely(INDIRECT_ADDR(addr))) + return iomap_ops[ADDR_TO_REGION(addr)]->read16be(addr); + return *((u16 *)addr); +} + +unsigned int ioread32(void __iomem *addr) +{ + if (unlikely(INDIRECT_ADDR(addr))) + return iomap_ops[ADDR_TO_REGION(addr)]->read32(addr); + return le32_to_cpup((u32 *)addr); +} + +unsigned int ioread32be(void __iomem *addr) +{ + if (unlikely(INDIRECT_ADDR(addr))) + return iomap_ops[ADDR_TO_REGION(addr)]->read32be(addr); + return *((u32 *)addr); +} + +void iowrite8(u8 datum, void __iomem *addr) +{ + if (unlikely(INDIRECT_ADDR(addr))) { + iomap_ops[ADDR_TO_REGION(addr)]->write8(datum, addr); + } else { + *((u8 *)addr) = datum; + } +} + +void iowrite16(u16 datum, void __iomem *addr) +{ + if (unlikely(INDIRECT_ADDR(addr))) { + iomap_ops[ADDR_TO_REGION(addr)]->write16(datum, addr); + } else { + *((u16 *)addr) = cpu_to_le16(datum); + } +} + +void iowrite16be(u16 datum, void __iomem *addr) +{ + if (unlikely(INDIRECT_ADDR(addr))) { + iomap_ops[ADDR_TO_REGION(addr)]->write16be(datum, addr); + } else { + *((u16 *)addr) = datum; + } +} + +void iowrite32(u32 datum, void __iomem *addr) +{ + if (unlikely(INDIRECT_ADDR(addr))) { + iomap_ops[ADDR_TO_REGION(addr)]->write32(datum, addr); + } else { + *((u32 *)addr) = cpu_to_le32(datum); + } +} + +void iowrite32be(u32 datum, void __iomem *addr) +{ + if (unlikely(INDIRECT_ADDR(addr))) { + iomap_ops[ADDR_TO_REGION(addr)]->write32be(datum, addr); + } else { + *((u32 *)addr) = datum; + } +} + +/* Repeating interfaces */ + +void ioread8_rep(void __iomem *addr, void *dst, unsigned long count) +{ + if (unlikely(INDIRECT_ADDR(addr))) { + iomap_ops[ADDR_TO_REGION(addr)]->read8r(addr, dst, count); + } else { + while (count--) { + *(u8 *)dst = *(u8 *)addr; + dst++; + } + } +} + +void ioread16_rep(void __iomem *addr, void *dst, unsigned long count) +{ + if (unlikely(INDIRECT_ADDR(addr))) { + iomap_ops[ADDR_TO_REGION(addr)]->read16r(addr, dst, count); + } else { + while (count--) { + *(u16 *)dst = *(u16 *)addr; + dst += 2; + } + } +} + +void ioread32_rep(void __iomem *addr, void *dst, unsigned long count) +{ + if (unlikely(INDIRECT_ADDR(addr))) { + iomap_ops[ADDR_TO_REGION(addr)]->read32r(addr, dst, count); + } else { + while (count--) { + *(u32 *)dst = *(u32 *)addr; + dst += 4; + } + } +} + +void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count) +{ + if (unlikely(INDIRECT_ADDR(addr))) { + iomap_ops[ADDR_TO_REGION(addr)]->write8r(addr, src, count); + } else { + while (count--) { + *(u8 *)addr = *(u8 *)src; + src++; + } + } +} + +void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count) +{ + if (unlikely(INDIRECT_ADDR(addr))) { + iomap_ops[ADDR_TO_REGION(addr)]->write16r(addr, src, count); + } else { + while (count--) { + *(u16 *)addr = *(u16 *)src; + src += 2; + } + } +} + +void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count) +{ + if (unlikely(INDIRECT_ADDR(addr))) { + iomap_ops[ADDR_TO_REGION(addr)]->write32r(addr, src, count); + } else { + while (count--) { + *(u32 *)addr = *(u32 *)src; + src += 4; + } + } +} + +/* Mapping interfaces */ + +void __iomem *ioport_map(unsigned long port, unsigned int nr) +{ + return (void __iomem *)(IOPORT_MAP_BASE | port); +} + +void ioport_unmap(void __iomem *addr) +{ + if (!INDIRECT_ADDR(addr)) { + iounmap(addr); + } +} + +void pci_iounmap(struct pci_dev *dev, void __iomem * addr) +{ + if (!INDIRECT_ADDR(addr)) { + iounmap(addr); + } +} + +EXPORT_SYMBOL(ioread8); +EXPORT_SYMBOL(ioread16); +EXPORT_SYMBOL(ioread16be); +EXPORT_SYMBOL(ioread32); +EXPORT_SYMBOL(ioread32be); +EXPORT_SYMBOL(iowrite8); +EXPORT_SYMBOL(iowrite16); +EXPORT_SYMBOL(iowrite16be); +EXPORT_SYMBOL(iowrite32); +EXPORT_SYMBOL(iowrite32be); +EXPORT_SYMBOL(ioread8_rep); +EXPORT_SYMBOL(ioread16_rep); +EXPORT_SYMBOL(ioread32_rep); +EXPORT_SYMBOL(iowrite8_rep); +EXPORT_SYMBOL(iowrite16_rep); +EXPORT_SYMBOL(iowrite32_rep); +EXPORT_SYMBOL(ioport_map); +EXPORT_SYMBOL(ioport_unmap); +EXPORT_SYMBOL(pci_iounmap); -- cgit 1.2.3-korg