forked from luck/tmp_suning_uos_patched
f11b478d46
fb_{read,write} access the framebuffer using lots of fb_{read,write}l's
but don't check that the file position is aligned which can cause problems
on some architectures which do not support unaligned accesses.
Since the operations are essentially memcpy_{from,to}io, new
fb_memcpy_{from,to}fb macros have been defined and these are used instead.
For Sparc, fb_{read,write} macros use sbus_{read,write}, so this defines
new sbus_memcpy_{from,to}io functions the same as memcpy_{from,to}io but
using sbus_{read,write}b instead of {read,write}b.
Signed-off-by: James Hogan <james@albanarts.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
545 lines
14 KiB
C
545 lines
14 KiB
C
#ifndef __SPARC64_IO_H
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#define __SPARC64_IO_H
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#include <linux/kernel.h>
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#include <linux/compiler.h>
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#include <linux/types.h>
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#include <asm/page.h> /* IO address mapping routines need this */
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#include <asm/system.h>
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#include <asm/asi.h>
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/* PC crapola... */
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#define __SLOW_DOWN_IO do { } while (0)
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#define SLOW_DOWN_IO do { } while (0)
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/* BIO layer definitions. */
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extern unsigned long kern_base, kern_size;
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#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
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static inline u8 _inb(unsigned long addr)
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{
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u8 ret;
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__asm__ __volatile__("lduba\t[%1] %2, %0\t/* pci_inb */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
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: "memory");
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return ret;
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}
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static inline u16 _inw(unsigned long addr)
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{
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u16 ret;
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__asm__ __volatile__("lduha\t[%1] %2, %0\t/* pci_inw */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
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: "memory");
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return ret;
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}
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static inline u32 _inl(unsigned long addr)
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{
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u32 ret;
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__asm__ __volatile__("lduwa\t[%1] %2, %0\t/* pci_inl */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
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: "memory");
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return ret;
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}
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static inline void _outb(u8 b, unsigned long addr)
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{
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__asm__ __volatile__("stba\t%r0, [%1] %2\t/* pci_outb */"
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: /* no outputs */
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: "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
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: "memory");
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}
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static inline void _outw(u16 w, unsigned long addr)
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{
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__asm__ __volatile__("stha\t%r0, [%1] %2\t/* pci_outw */"
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: /* no outputs */
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: "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
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: "memory");
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}
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static inline void _outl(u32 l, unsigned long addr)
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{
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__asm__ __volatile__("stwa\t%r0, [%1] %2\t/* pci_outl */"
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: /* no outputs */
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: "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
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: "memory");
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}
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#define inb(__addr) (_inb((unsigned long)(__addr)))
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#define inw(__addr) (_inw((unsigned long)(__addr)))
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#define inl(__addr) (_inl((unsigned long)(__addr)))
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#define outb(__b, __addr) (_outb((u8)(__b), (unsigned long)(__addr)))
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#define outw(__w, __addr) (_outw((u16)(__w), (unsigned long)(__addr)))
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#define outl(__l, __addr) (_outl((u32)(__l), (unsigned long)(__addr)))
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#define inb_p(__addr) inb(__addr)
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#define outb_p(__b, __addr) outb(__b, __addr)
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#define inw_p(__addr) inw(__addr)
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#define outw_p(__w, __addr) outw(__w, __addr)
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#define inl_p(__addr) inl(__addr)
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#define outl_p(__l, __addr) outl(__l, __addr)
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extern void outsb(unsigned long, const void *, unsigned long);
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extern void outsw(unsigned long, const void *, unsigned long);
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extern void outsl(unsigned long, const void *, unsigned long);
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extern void insb(unsigned long, void *, unsigned long);
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extern void insw(unsigned long, void *, unsigned long);
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extern void insl(unsigned long, void *, unsigned long);
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static inline void ioread8_rep(void __iomem *port, void *buf, unsigned long count)
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{
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insb((unsigned long __force)port, buf, count);
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}
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static inline void ioread16_rep(void __iomem *port, void *buf, unsigned long count)
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{
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insw((unsigned long __force)port, buf, count);
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}
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static inline void ioread32_rep(void __iomem *port, void *buf, unsigned long count)
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{
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insl((unsigned long __force)port, buf, count);
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}
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static inline void iowrite8_rep(void __iomem *port, const void *buf, unsigned long count)
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{
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outsb((unsigned long __force)port, buf, count);
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}
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static inline void iowrite16_rep(void __iomem *port, const void *buf, unsigned long count)
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{
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outsw((unsigned long __force)port, buf, count);
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}
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static inline void iowrite32_rep(void __iomem *port, const void *buf, unsigned long count)
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{
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outsl((unsigned long __force)port, buf, count);
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}
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/* Memory functions, same as I/O accesses on Ultra. */
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static inline u8 _readb(const volatile void __iomem *addr)
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{ u8 ret;
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__asm__ __volatile__("lduba\t[%1] %2, %0\t/* pci_readb */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
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: "memory");
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return ret;
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}
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static inline u16 _readw(const volatile void __iomem *addr)
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{ u16 ret;
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__asm__ __volatile__("lduha\t[%1] %2, %0\t/* pci_readw */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
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: "memory");
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return ret;
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}
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static inline u32 _readl(const volatile void __iomem *addr)
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{ u32 ret;
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__asm__ __volatile__("lduwa\t[%1] %2, %0\t/* pci_readl */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
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: "memory");
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return ret;
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}
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static inline u64 _readq(const volatile void __iomem *addr)
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{ u64 ret;
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__asm__ __volatile__("ldxa\t[%1] %2, %0\t/* pci_readq */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
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: "memory");
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return ret;
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}
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static inline void _writeb(u8 b, volatile void __iomem *addr)
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{
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__asm__ __volatile__("stba\t%r0, [%1] %2\t/* pci_writeb */"
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: /* no outputs */
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: "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
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: "memory");
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}
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static inline void _writew(u16 w, volatile void __iomem *addr)
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{
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__asm__ __volatile__("stha\t%r0, [%1] %2\t/* pci_writew */"
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: /* no outputs */
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: "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
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: "memory");
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}
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static inline void _writel(u32 l, volatile void __iomem *addr)
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{
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__asm__ __volatile__("stwa\t%r0, [%1] %2\t/* pci_writel */"
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: /* no outputs */
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: "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
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: "memory");
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}
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static inline void _writeq(u64 q, volatile void __iomem *addr)
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{
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__asm__ __volatile__("stxa\t%r0, [%1] %2\t/* pci_writeq */"
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: /* no outputs */
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: "Jr" (q), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
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: "memory");
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}
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#define readb(__addr) _readb(__addr)
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#define readw(__addr) _readw(__addr)
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#define readl(__addr) _readl(__addr)
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#define readq(__addr) _readq(__addr)
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#define readb_relaxed(__addr) _readb(__addr)
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#define readw_relaxed(__addr) _readw(__addr)
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#define readl_relaxed(__addr) _readl(__addr)
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#define readq_relaxed(__addr) _readq(__addr)
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#define writeb(__b, __addr) _writeb(__b, __addr)
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#define writew(__w, __addr) _writew(__w, __addr)
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#define writel(__l, __addr) _writel(__l, __addr)
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#define writeq(__q, __addr) _writeq(__q, __addr)
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/* Now versions without byte-swapping. */
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static inline u8 _raw_readb(unsigned long addr)
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{
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u8 ret;
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__asm__ __volatile__("lduba\t[%1] %2, %0\t/* pci_raw_readb */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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return ret;
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}
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static inline u16 _raw_readw(unsigned long addr)
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{
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u16 ret;
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__asm__ __volatile__("lduha\t[%1] %2, %0\t/* pci_raw_readw */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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return ret;
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}
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static inline u32 _raw_readl(unsigned long addr)
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{
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u32 ret;
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__asm__ __volatile__("lduwa\t[%1] %2, %0\t/* pci_raw_readl */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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return ret;
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}
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static inline u64 _raw_readq(unsigned long addr)
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{
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u64 ret;
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__asm__ __volatile__("ldxa\t[%1] %2, %0\t/* pci_raw_readq */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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return ret;
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}
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static inline void _raw_writeb(u8 b, unsigned long addr)
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{
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__asm__ __volatile__("stba\t%r0, [%1] %2\t/* pci_raw_writeb */"
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: /* no outputs */
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: "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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}
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static inline void _raw_writew(u16 w, unsigned long addr)
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{
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__asm__ __volatile__("stha\t%r0, [%1] %2\t/* pci_raw_writew */"
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: /* no outputs */
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: "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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}
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static inline void _raw_writel(u32 l, unsigned long addr)
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{
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__asm__ __volatile__("stwa\t%r0, [%1] %2\t/* pci_raw_writel */"
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: /* no outputs */
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: "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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}
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static inline void _raw_writeq(u64 q, unsigned long addr)
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{
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__asm__ __volatile__("stxa\t%r0, [%1] %2\t/* pci_raw_writeq */"
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: /* no outputs */
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: "Jr" (q), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
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}
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#define __raw_readb(__addr) (_raw_readb((unsigned long)(__addr)))
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#define __raw_readw(__addr) (_raw_readw((unsigned long)(__addr)))
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#define __raw_readl(__addr) (_raw_readl((unsigned long)(__addr)))
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#define __raw_readq(__addr) (_raw_readq((unsigned long)(__addr)))
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#define __raw_writeb(__b, __addr) (_raw_writeb((u8)(__b), (unsigned long)(__addr)))
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#define __raw_writew(__w, __addr) (_raw_writew((u16)(__w), (unsigned long)(__addr)))
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#define __raw_writel(__l, __addr) (_raw_writel((u32)(__l), (unsigned long)(__addr)))
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#define __raw_writeq(__q, __addr) (_raw_writeq((u64)(__q), (unsigned long)(__addr)))
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/* Valid I/O Space regions are anywhere, because each PCI bus supported
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* can live in an arbitrary area of the physical address range.
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*/
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#define IO_SPACE_LIMIT 0xffffffffffffffffUL
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/* Now, SBUS variants, only difference from PCI is that we do
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* not use little-endian ASIs.
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*/
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static inline u8 _sbus_readb(const volatile void __iomem *addr)
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{
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u8 ret;
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__asm__ __volatile__("lduba\t[%1] %2, %0\t/* sbus_readb */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E)
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: "memory");
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return ret;
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}
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static inline u16 _sbus_readw(const volatile void __iomem *addr)
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{
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u16 ret;
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__asm__ __volatile__("lduha\t[%1] %2, %0\t/* sbus_readw */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E)
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: "memory");
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return ret;
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}
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static inline u32 _sbus_readl(const volatile void __iomem *addr)
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{
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u32 ret;
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__asm__ __volatile__("lduwa\t[%1] %2, %0\t/* sbus_readl */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E)
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: "memory");
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return ret;
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}
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static inline u64 _sbus_readq(const volatile void __iomem *addr)
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{
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u64 ret;
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__asm__ __volatile__("ldxa\t[%1] %2, %0\t/* sbus_readq */"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E)
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: "memory");
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return ret;
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}
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static inline void _sbus_writeb(u8 b, volatile void __iomem *addr)
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{
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__asm__ __volatile__("stba\t%r0, [%1] %2\t/* sbus_writeb */"
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: /* no outputs */
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: "Jr" (b), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E)
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: "memory");
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}
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static inline void _sbus_writew(u16 w, volatile void __iomem *addr)
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{
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__asm__ __volatile__("stha\t%r0, [%1] %2\t/* sbus_writew */"
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: /* no outputs */
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: "Jr" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E)
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: "memory");
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}
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static inline void _sbus_writel(u32 l, volatile void __iomem *addr)
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{
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__asm__ __volatile__("stwa\t%r0, [%1] %2\t/* sbus_writel */"
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: /* no outputs */
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: "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E)
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: "memory");
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}
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static inline void _sbus_writeq(u64 l, volatile void __iomem *addr)
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{
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__asm__ __volatile__("stxa\t%r0, [%1] %2\t/* sbus_writeq */"
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: /* no outputs */
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: "Jr" (l), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E)
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: "memory");
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}
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#define sbus_readb(__addr) _sbus_readb(__addr)
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#define sbus_readw(__addr) _sbus_readw(__addr)
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#define sbus_readl(__addr) _sbus_readl(__addr)
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#define sbus_readq(__addr) _sbus_readq(__addr)
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#define sbus_writeb(__b, __addr) _sbus_writeb(__b, __addr)
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#define sbus_writew(__w, __addr) _sbus_writew(__w, __addr)
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#define sbus_writel(__l, __addr) _sbus_writel(__l, __addr)
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#define sbus_writeq(__l, __addr) _sbus_writeq(__l, __addr)
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static inline void _sbus_memset_io(volatile void __iomem *dst, int c, __kernel_size_t n)
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{
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while(n--) {
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sbus_writeb(c, dst);
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dst++;
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}
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}
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#define sbus_memset_io(d,c,sz) _sbus_memset_io(d,c,sz)
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static inline void
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_memset_io(volatile void __iomem *dst, int c, __kernel_size_t n)
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{
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volatile void __iomem *d = dst;
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while (n--) {
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writeb(c, d);
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d++;
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}
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}
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#define memset_io(d,c,sz) _memset_io(d,c,sz)
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static inline void
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_sbus_memcpy_fromio(void *dst, const volatile void __iomem *src,
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__kernel_size_t n)
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{
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char *d = dst;
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while (n--) {
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char tmp = sbus_readb(src);
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*d++ = tmp;
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src++;
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}
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}
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#define sbus_memcpy_fromio(d, s, sz) _sbus_memcpy_fromio(d, s, sz)
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static inline void
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_memcpy_fromio(void *dst, const volatile void __iomem *src, __kernel_size_t n)
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{
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char *d = dst;
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while (n--) {
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char tmp = readb(src);
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*d++ = tmp;
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src++;
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|
}
|
|
}
|
|
|
|
#define memcpy_fromio(d,s,sz) _memcpy_fromio(d,s,sz)
|
|
|
|
static inline void
|
|
_sbus_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++;
|
|
sbus_writeb(tmp, d);
|
|
d++;
|
|
}
|
|
}
|
|
|
|
#define sbus_memcpy_toio(d, s, sz) _sbus_memcpy_toio(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 ioread16be(X) __raw_readw(X)
|
|
#define ioread32(X) readl(X)
|
|
#define ioread32be(X) __raw_readl(X)
|
|
#define iowrite8(val,X) writeb(val,X)
|
|
#define iowrite16(val,X) writew(val,X)
|
|
#define iowrite16be(val,X) __raw_writew(val,X)
|
|
#define iowrite32(val,X) writel(val,X)
|
|
#define iowrite32be(val,X) __raw_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 *);
|
|
|
|
static inline int sbus_can_dma_64bit(void)
|
|
{
|
|
return 1;
|
|
}
|
|
static inline int sbus_can_burst64(void)
|
|
{
|
|
return 1;
|
|
}
|
|
struct device;
|
|
extern void sbus_set_sbus64(struct device *, int);
|
|
|
|
/*
|
|
* 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) */
|