1 files changed, 511 insertions, 0 deletions

diff --git a/arch/sparc/include/asm/io_64.h b/arch/sparc/include/asm/io_64.h
new file mode 100644
index 00000000000..0bff078ffdd
--- /dev/null
+++ b/arch/sparc/include/asm/io_64.h
@@ -0,0 +1,511 @@
+#ifndef __SPARC64_IO_H
+#define __SPARC64_IO_H
+
+#include <linux/kernel.h>
+#include <linux/compiler.h>
+#include <linux/types.h>
+
+#include <asm/page.h>      /* IO address mapping routines need this */
+#include <asm/system.h>
+#include <asm/asi.h>
+
+/* PC crapola... */
+#define __SLOW_DOWN_IO  do { } while (0)
+#define SLOW_DOWN_IO    do { } while (0)
+
+/* BIO layer definitions. */
+extern unsigned long kern_base, kern_size;
+#define page_to_phys(page)      (page_to_pfn(page) << PAGE_SHIFT)
+
+static inline u8 _inb(unsigned long addr)
+{
+        u8 ret;
+
+        __asm__ __volatile__("lduba\t[%1] %2, %0\t/* pci_inb */"
+                             : "=r" (ret)
+                             : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+                             : "memory");
+
+        return ret;
+}
+
+static inline u16 _inw(unsigned long addr)
+{
+        u16 ret;
+
+        __asm__ __volatile__("lduha\t[%1] %2, %0\t/* pci_inw */"
+                             : "=r" (ret)
+                             : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+                             : "memory");
+
+        return ret;
+}
+
+static inline u32 _inl(unsigned long addr)
+{
+        u32 ret;
+
+        __asm__ __volatile__("lduwa\t[%1] %2, %0\t/* pci_inl */"
+                             : "=r" (ret)
+                             : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+                             : "memory");
+
+        return ret;
+}
+
+static inline void _outb(u8 b, unsigned long addr)
+{
+        __asm__ __volatile__("stba\t%r0, [%1] %2\t/* pci_outb */"
+                             : /* no outputs */
+                             : "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+                             : "memory");
+}
+
+static inline void _outw(u16 w, unsigned long addr)
+{
+        __asm__ __volatile__("stha\t%r0, [%1] %2\t/* pci_outw */"
+                             : /* no outputs */
+                             : "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+                             : "memory");
+}
+
+static inline void _outl(u32 l, unsigned long addr)
+{
+        __asm__ __volatile__("stwa\t%r0, [%1] %2\t/* pci_outl */"
+                             : /* no outputs */
+                             : "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+                             : "memory");
+}
+
+#define inb(__addr)             (_inb((unsigned long)(__addr)))
+#define inw(__addr)             (_inw((unsigned long)(__addr)))
+#define inl(__addr)             (_inl((unsigned long)(__addr)))
+#define outb(__b, __addr)       (_outb((u8)(__b), (unsigned long)(__addr)))
+#define outw(__w, __addr)       (_outw((u16)(__w), (unsigned long)(__addr)))
+#define outl(__l, __addr)       (_outl((u32)(__l), (unsigned long)(__addr)))
+
+#define inb_p(__addr)           inb(__addr)
+#define outb_p(__b, __addr)     outb(__b, __addr)
+#define inw_p(__addr)           inw(__addr)
+#define outw_p(__w, __addr)     outw(__w, __addr)
+#define inl_p(__addr)           inl(__addr)
+#define outl_p(__l, __addr)     outl(__l, __addr)
+
+extern void outsb(unsigned long, const void *, unsigned long);
+extern void outsw(unsigned long, const void *, unsigned long);
+extern void outsl(unsigned long, const void *, unsigned long);
+extern void insb(unsigned long, void *, unsigned long);
+extern void insw(unsigned long, void *, unsigned long);
+extern void insl(unsigned long, void *, unsigned long);
+
+static inline void ioread8_rep(void __iomem *port, void *buf, unsigned long count)
+{
+        insb((unsigned long __force)port, buf, count);
+}
+static inline void ioread16_rep(void __iomem *port, void *buf, unsigned long count)
+{
+        insw((unsigned long __force)port, buf, count);
+}
+
+static inline void ioread32_rep(void __iomem *port, void *buf, unsigned long count)
+{
+        insl((unsigned long __force)port, buf, count);
+}
+
+static inline void iowrite8_rep(void __iomem *port, const void *buf, unsigned long count)
+{
+        outsb((unsigned long __force)port, buf, count);
+}
+
+static inline void iowrite16_rep(void __iomem *port, const void *buf, unsigned long count)
+{
+        outsw((unsigned long __force)port, buf, count);
+}
+
+static inline void iowrite32_rep(void __iomem *port, const void *buf, unsigned long count)
+{
+        outsl((unsigned long __force)port, buf, count);
+}
+
+/* Memory functions, same as I/O accesses on Ultra. */
+static inline u8 _readb(const volatile void __iomem *addr)
+{       u8 ret;
+
+        __asm__ __volatile__("lduba\t[%1] %2, %0\t/* pci_readb */"
+                             : "=r" (ret)
+                             : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+                             : "memory");
+        return ret;
+}
+
+static inline u16 _readw(const volatile void __iomem *addr)
+{       u16 ret;
+
+        __asm__ __volatile__("lduha\t[%1] %2, %0\t/* pci_readw */"
+                             : "=r" (ret)
+                             : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+                             : "memory");
+
+        return ret;
+}
+
+static inline u32 _readl(const volatile void __iomem *addr)
+{       u32 ret;
+
+        __asm__ __volatile__("lduwa\t[%1] %2, %0\t/* pci_readl */"
+                             : "=r" (ret)
+                             : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+                             : "memory");
+
+        return ret;
+}
+
+static inline u64 _readq(const volatile void __iomem *addr)
+{       u64 ret;
+
+        __asm__ __volatile__("ldxa\t[%1] %2, %0\t/* pci_readq */"
+                             : "=r" (ret)
+                             : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+                             : "memory");
+
+        return ret;
+}
+
+static inline void _writeb(u8 b, volatile void __iomem *addr)
+{
+        __asm__ __volatile__("stba\t%r0, [%1] %2\t/* pci_writeb */"
+                             : /* no outputs */
+                             : "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+                             : "memory");
+}
+
+static inline void _writew(u16 w, volatile void __iomem *addr)
+{
+        __asm__ __volatile__("stha\t%r0, [%1] %2\t/* pci_writew */"
+                             : /* no outputs */
+                             : "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+                             : "memory");
+}
+
+static inline void _writel(u32 l, volatile void __iomem *addr)
+{
+        __asm__ __volatile__("stwa\t%r0, [%1] %2\t/* pci_writel */"
+                             : /* no outputs */
+                             : "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+                             : "memory");
+}
+
+static inline void _writeq(u64 q, volatile void __iomem *addr)
+{
+        __asm__ __volatile__("stxa\t%r0, [%1] %2\t/* pci_writeq */"
+                             : /* no outputs */
+                             : "Jr" (q), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
+                             : "memory");
+}
+
+#define readb(__addr)           _readb(__addr)
+#define readw(__addr)           _readw(__addr)
+#define readl(__addr)           _readl(__addr)
+#define readq(__addr)           _readq(__addr)
+#define readb_relaxed(__addr)   _readb(__addr)
+#define readw_relaxed(__addr)   _readw(__addr)
+#define readl_relaxed(__addr)   _readl(__addr)
+#define readq_relaxed(__addr)   _readq(__addr)
+#define writeb(__b, __addr)     _writeb(__b, __addr)
+#define writew(__w, __addr)     _writew(__w, __addr)
+#define writel(__l, __addr)     _writel(__l, __addr)
+#define writeq(__q, __addr)     _writeq(__q, __addr)
+
+/* Now versions without byte-swapping. */
+static inline u8 _raw_readb(unsigned long addr)
+{
+        u8 ret;
+
+        __asm__ __volatile__("lduba\t[%1] %2, %0\t/* pci_raw_readb */"
+                             : "=r" (ret)
+                             : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
+
+        return ret;
+}
+
+static inline u16 _raw_readw(unsigned long addr)
+{
+        u16 ret;
+
+        __asm__ __volatile__("lduha\t[%1] %2, %0\t/* pci_raw_readw */"
+                             : "=r" (ret)
+                             : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
+
+        return ret;
+}
+
+static inline u32 _raw_readl(unsigned long addr)
+{
+        u32 ret;
+
+        __asm__ __volatile__("lduwa\t[%1] %2, %0\t/* pci_raw_readl */"
+                             : "=r" (ret)
+                             : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
+
+        return ret;
+}
+
+static inline u64 _raw_readq(unsigned long addr)
+{
+        u64 ret;
+
+        __asm__ __volatile__("ldxa\t[%1] %2, %0\t/* pci_raw_readq */"
+                             : "=r" (ret)
+                             : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
+
+        return ret;
+}
+
+static inline void _raw_writeb(u8 b, unsigned long addr)
+{
+        __asm__ __volatile__("stba\t%r0, [%1] %2\t/* pci_raw_writeb */"
+                             : /* no outputs */
+                             : "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
+}
+
+static inline void _raw_writew(u16 w, unsigned long addr)
+{
+        __asm__ __volatile__("stha\t%r0, [%1] %2\t/* pci_raw_writew */"
+                             : /* no outputs */
+                             : "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
+}
+
+static inline void _raw_writel(u32 l, unsigned long addr)
+{
+        __asm__ __volatile__("stwa\t%r0, [%1] %2\t/* pci_raw_writel */"
+                             : /* no outputs */
+                             : "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
+}
+
+static inline void _raw_writeq(u64 q, unsigned long addr)
+{
+        __asm__ __volatile__("stxa\t%r0, [%1] %2\t/* pci_raw_writeq */"
+                             : /* no outputs */
+                             : "Jr" (q), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
+}
+
+#define __raw_readb(__addr)             (_raw_readb((unsigned long)(__addr)))
+#define __raw_readw(__addr)             (_raw_readw((unsigned long)(__addr)))
+#define __raw_readl(__addr)             (_raw_readl((unsigned long)(__addr)))
+#define __raw_readq(__addr)             (_raw_readq((unsigned long)(__addr)))
+#define __raw_writeb(__b, __addr)       (_raw_writeb((u8)(__b), (unsigned long)(__addr)))
+#define __raw_writew(__w, __addr)       (_raw_writew((u16)(__w), (unsigned long)(__addr)))
+#define __raw_writel(__l, __addr)       (_raw_writel((u32)(__l), (unsigned long)(__addr)))
+#define __raw_writeq(__q, __addr)       (_raw_writeq((u64)(__q), (unsigned long)(__addr)))
+
+/* Valid I/O Space regions are anywhere, because each PCI bus supported
+ * can live in an arbitrary area of the physical address range.
+ */
+#define IO_SPACE_LIMIT 0xffffffffffffffffUL
+
+/* Now, SBUS variants, only difference from PCI is that we do
+ * not use little-endian ASIs.
+ */
+static inline u8 _sbus_readb(const volatile void __iomem *addr)
+{
+        u8 ret;
+
+        __asm__ __volatile__("lduba\t[%1] %2, %0\t/* sbus_readb */"
+                             : "=r" (ret)
+                             : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E)
+                             : "memory");
+
+        return ret;
+}
+
+static inline u16 _sbus_readw(const volatile void __iomem *addr)
+{
+        u16 ret;
+
+        __asm__ __volatile__("lduha\t[%1] %2, %0\t/* sbus_readw */"
+                             : "=r" (ret)
+                             : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E)
+                             : "memory");
+
+        return ret;
+}
+
+static inline u32 _sbus_readl(const volatile void __iomem *addr)
+{
+        u32 ret;
+
+        __asm__ __volatile__("lduwa\t[%1] %2, %0\t/* sbus_readl */"
+                             : "=r" (ret)
+                             : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E)
+                             : "memory");
+
+        return ret;
+}
+
+static inline u64 _sbus_readq(const volatile void __iomem *addr)
+{
+        u64 ret;
+
+        __asm__ __volatile__("ldxa\t[%1] %2, %0\t/* sbus_readq */"
+                             : "=r" (ret)
+                             : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E)
+                             : "memory");
+
+        return ret;
+}
+
+static inline void _sbus_writeb(u8 b, volatile void __iomem *addr)
+{
+        __asm__ __volatile__("stba\t%r0, [%1] %2\t/* sbus_writeb */"
+                             : /* no outputs */
+                             : "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E)
+                             : "memory");
+}
+
+static inline void _sbus_writew(u16 w, volatile void __iomem *addr)
+{
+        __asm__ __volatile__("stha\t%r0, [%1] %2\t/* sbus_writew */"
+                             : /* no outputs */
+                             : "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E)
+                             : "memory");
+}
+
+static inline void _sbus_writel(u32 l, volatile void __iomem *addr)
+{
+        __asm__ __volatile__("stwa\t%r0, [%1] %2\t/* sbus_writel */"
+                             : /* no outputs */
+                             : "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E)
+                             : "memory");
+}
+
+static inline void _sbus_writeq(u64 l, volatile void __iomem *addr)
+{
+        __asm__ __volatile__("stxa\t%r0, [%1] %2\t/* sbus_writeq */"
+                             : /* no outputs */
+                             : "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E)
+                             : "memory");
+}
+
+#define sbus_readb(__addr)              _sbus_readb(__addr)
+#define sbus_readw(__addr)              _sbus_readw(__addr)
+#define sbus_readl(__addr)              _sbus_readl(__addr)
+#define sbus_readq(__addr)              _sbus_readq(__addr)
+#define sbus_writeb(__b, __addr)        _sbus_writeb(__b, __addr)
+#define sbus_writew(__w, __addr)        _sbus_writew(__w, __addr)
+#define sbus_writel(__l, __addr)        _sbus_writel(__l, __addr)
+#define sbus_writeq(__l, __addr)        _sbus_writeq(__l, __addr)
+
+static inline void _sbus_memset_io(volatile void __iomem *dst, int c, __kernel_size_t n)
+{
+        while(n--) {
+                sbus_writeb(c, dst);
+                dst++;
+        }
+}
+
+#define sbus_memset_io(d,c,sz)  _sbus_memset_io(d,c,sz)
+
+static inline void
+_memset_io(volatile void __iomem *dst, int c, __kernel_size_t n)
+{
+        volatile void __iomem *d = dst;
+
+        while (n--) {
+                writeb(c, d);
+                d++;
+        }
+}
+
+#define memset_io(d,c,sz)       _memset_io(d,c,sz)
+
+static inline void
+_memcpy_fromio(void *dst, const volatile void __iomem *src, __kernel_size_t n)
+{
+        char *d = dst;
+
+        while (n--) {
+                char tmp = readb(src);
+                *d++ = tmp;
+                src++;
+        }
+}
+
+#define memcpy_fromio(d,s,sz)   _memcpy_fromio(d,s,sz)
+
+static inline void
+_memcpy_toio(volatile void __iomem *dst, const void *src, __kernel_size_t n)
+{
+        const char *s = src;
+        volatile void __iomem *d = dst;
+
+        while (n--) {
+                char tmp = *s++;
+                writeb(tmp, d);
+                d++;
+        }
+}
+
+#define memcpy_toio(d,s,sz)     _memcpy_toio(d,s,sz)
+
+#define mmiowb()
+
+#ifdef __KERNEL__
+
+/* On sparc64 we have the whole physical IO address space accessible
+ * using physically addressed loads and stores, so this does nothing.
+ */
+static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
+{
+        return (void __iomem *)offset;
+}
+
+#define ioremap_nocache(X,Y)            ioremap((X),(Y))
+#define ioremap_wc(X,Y)                 ioremap((X),(Y))
+
+static inline 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 *);
+
+/* Similarly for SBUS. */
+#define sbus_ioremap(__res, __offset, __size, __name) \
+({      unsigned long __ret; \
+        __ret  = (__res)->start + (((__res)->flags & 0x1ffUL) << 32UL); \
+        __ret += (unsigned long) (__offset); \
+        if (! request_region((__ret), (__size), (__name))) \
+                __ret = 0UL; \
+        (void __iomem *) __ret; \
+})
+
+#define sbus_iounmap(__addr, __size)    \
+        release_region((unsigned long)(__addr), (__size))
+
+/*
+ * Convert a physical pointer to a virtual kernel pointer for /dev/mem
+ * access
+ */
+#define xlate_dev_mem_ptr(p)    __va(p)
+
+/*
+ * Convert a virtual cached pointer to an uncached pointer
+ */
+#define xlate_dev_kmem_ptr(p)   p
+
+#endif
+
+#endif /* !(__SPARC64_IO_H) */