diff options
Diffstat (limited to 'include/asm-sparc/io_64.h')
| -rw-r--r-- | include/asm-sparc/io_64.h | 511 |
1 files changed, 511 insertions, 0 deletions
diff --git a/include/asm-sparc/io_64.h b/include/asm-sparc/io_64.h new file mode 100644 index 00000000000..0bff078ffdd --- /dev/null +++ b/include/asm-sparc/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) */ |