diff options
Diffstat (limited to 'target/linux/mpc83xx/patches-2.6.35/010-sysdev_rb_iomap.patch')
| -rw-r--r-- | target/linux/mpc83xx/patches-2.6.35/010-sysdev_rb_iomap.patch | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/target/linux/mpc83xx/patches-2.6.35/010-sysdev_rb_iomap.patch b/target/linux/mpc83xx/patches-2.6.35/010-sysdev_rb_iomap.patch new file mode 100644 index 000000000..43c44bad2 --- /dev/null +++ b/target/linux/mpc83xx/patches-2.6.35/010-sysdev_rb_iomap.patch @@ -0,0 +1,226 @@ +--- /dev/null ++++ b/arch/powerpc/sysdev/rb_iomap.c +@@ -0,0 +1,223 @@ ++#include <linux/init.h> ++#include <linux/pci.h> ++#include <linux/mm.h> ++#include <asm/io.h> ++ ++#define LOCALBUS_START 0x40000000 ++#define LOCALBUS_MASK 0x007fffff ++#define LOCALBUS_REGMASK 0x001fffff ++ ++static void __iomem *localbus_base; ++ ++static inline int is_localbus(void __iomem *addr) ++{ ++ return ((unsigned) addr & ~LOCALBUS_MASK) == LOCALBUS_START; ++} ++ ++static inline unsigned localbus_regoff(unsigned reg) { ++ return (reg << 16) | (((reg ^ 8) & 8) << 17); ++} ++ ++static inline void __iomem *localbus_addr(void __iomem *addr) ++{ ++ return localbus_base ++ + ((unsigned) addr & LOCALBUS_MASK & ~LOCALBUS_REGMASK) ++ + localbus_regoff((unsigned) addr & LOCALBUS_REGMASK); ++} ++ ++unsigned int ioread8(void __iomem *addr) ++{ ++ if (is_localbus(addr)) ++ return in_be16(localbus_addr(addr)) >> 8; ++ return readb(addr); ++} ++EXPORT_SYMBOL(ioread8); ++ ++unsigned int ioread16(void __iomem *addr) ++{ ++ if (is_localbus(addr)) ++ return le16_to_cpu(in_be16(localbus_addr(addr))); ++ return readw(addr); ++} ++EXPORT_SYMBOL(ioread16); ++ ++unsigned int ioread16be(void __iomem *addr) ++{ ++ return in_be16(addr); ++} ++EXPORT_SYMBOL(ioread16be); ++ ++unsigned int ioread32(void __iomem *addr) ++{ ++ return readl(addr); ++} ++EXPORT_SYMBOL(ioread32); ++ ++unsigned int ioread32be(void __iomem *addr) ++{ ++ return in_be32(addr); ++} ++EXPORT_SYMBOL(ioread32be); ++ ++void iowrite8(u8 val, void __iomem *addr) ++{ ++ if (is_localbus(addr)) ++ out_be16(localbus_addr(addr), ((u16) val) << 8); ++ else ++ writeb(val, addr); ++} ++EXPORT_SYMBOL(iowrite8); ++ ++void iowrite16(u16 val, void __iomem *addr) ++{ ++ if (is_localbus(addr)) ++ out_be16(localbus_addr(addr), cpu_to_le16(val)); ++ else ++ writew(val, addr); ++} ++EXPORT_SYMBOL(iowrite16); ++ ++void iowrite16be(u16 val, void __iomem *addr) ++{ ++ out_be16(addr, val); ++} ++EXPORT_SYMBOL(iowrite16be); ++ ++void iowrite32(u32 val, void __iomem *addr) ++{ ++ writel(val, addr); ++} ++EXPORT_SYMBOL(iowrite32); ++ ++void iowrite32be(u32 val, void __iomem *addr) ++{ ++ out_be32(addr, val); ++} ++EXPORT_SYMBOL(iowrite32be); ++ ++void ioread8_rep(void __iomem *addr, void *dst, unsigned long count) ++{ ++ if (is_localbus(addr)) { ++ unsigned i; ++ void *laddr = localbus_addr(addr); ++ u8 *buf = dst; ++ ++ for (i = 0; i < count; ++i) { ++ *buf++ = in_be16(laddr) >> 8; ++ } ++ } else { ++ _insb((u8 __iomem *) addr, dst, count); ++ } ++} ++EXPORT_SYMBOL(ioread8_rep); ++ ++void ioread16_rep(void __iomem *addr, void *dst, unsigned long count) ++{ ++ if (is_localbus(addr)) { ++ unsigned i; ++ void *laddr = localbus_addr(addr); ++ u16 *buf = dst; ++ ++ for (i = 0; i < count; ++i) { ++ *buf++ = in_be16(laddr); ++ } ++ } else { ++ _insw_ns((u16 __iomem *) addr, dst, count); ++ } ++} ++EXPORT_SYMBOL(ioread16_rep); ++ ++void ioread32_rep(void __iomem *addr, void *dst, unsigned long count) ++{ ++ _insl_ns((u32 __iomem *) addr, dst, count); ++} ++EXPORT_SYMBOL(ioread32_rep); ++ ++void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count) ++{ ++ if (is_localbus(addr)) { ++ unsigned i; ++ void *laddr = localbus_addr(addr); ++ const u8 *buf = src; ++ ++ for (i = 0; i < count; ++i) { ++ out_be16(laddr, ((u16) *buf++) << 8); ++ } ++ } else { ++ _outsb((u8 __iomem *) addr, src, count); ++ } ++} ++EXPORT_SYMBOL(iowrite8_rep); ++ ++void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count) ++{ ++ if (is_localbus(addr)) { ++ unsigned i; ++ void *laddr = localbus_addr(addr); ++ const u16 *buf = src; ++ ++ for (i = 0; i < count; ++i) { ++ out_be16(laddr, *buf++); ++ } ++ } else { ++ _outsw_ns((u16 __iomem *) addr, src, count); ++ } ++} ++EXPORT_SYMBOL(iowrite16_rep); ++ ++void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count) ++{ ++ _outsl_ns((u32 __iomem *) addr, src, count); ++} ++EXPORT_SYMBOL(iowrite32_rep); ++ ++void __iomem *ioport_map(unsigned long port, unsigned int len) ++{ ++ return (void __iomem *) (port + _IO_BASE); ++} ++EXPORT_SYMBOL(ioport_unmap); ++ ++void ioport_unmap(void __iomem *addr) ++{ ++ /* Nothing to do */ ++} ++EXPORT_SYMBOL(ioport_map); ++ ++void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max) ++{ ++ 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) ++ return NULL; ++ if (max && len > max) ++ len = max; ++ if (flags & IORESOURCE_IO) ++ return ioport_map(start, len); ++ if (flags & IORESOURCE_MEM) ++ return ioremap(start, len); ++ /* What? */ ++ return NULL; ++} ++EXPORT_SYMBOL(pci_iomap); ++ ++void pci_iounmap(struct pci_dev *dev, void __iomem *addr) ++{ ++ /* Nothing to do */ ++} ++EXPORT_SYMBOL(pci_iounmap); ++ ++void __iomem *localbus_map(unsigned long addr, unsigned int len) ++{ ++ if (!localbus_base) ++ localbus_base = ioremap(addr & ~LOCALBUS_MASK, ++ LOCALBUS_MASK + 1); ++ return (void *) (LOCALBUS_START + (addr & LOCALBUS_MASK)); ++} ++EXPORT_SYMBOL(localbus_map); ++ ++void localbus_unmap(void __iomem *addr) ++{ ++} ++EXPORT_SYMBOL(localbus_unmap); |