diff options
Diffstat (limited to 'linux-2.6-xen-sparse/include/asm-x86_64/mach-xen/asm/io.h')
| -rw-r--r-- | linux-2.6-xen-sparse/include/asm-x86_64/mach-xen/asm/io.h | 330 |
1 files changed, 0 insertions, 330 deletions
diff --git a/linux-2.6-xen-sparse/include/asm-x86_64/mach-xen/asm/io.h b/linux-2.6-xen-sparse/include/asm-x86_64/mach-xen/asm/io.h deleted file mode 100644 index d92cbd5572..0000000000 --- a/linux-2.6-xen-sparse/include/asm-x86_64/mach-xen/asm/io.h +++ /dev/null @@ -1,330 +0,0 @@ -#ifndef _ASM_IO_H -#define _ASM_IO_H - -#include <asm/fixmap.h> - -/* - * This file contains the definitions for the x86 IO instructions - * inb/inw/inl/outb/outw/outl and the "string versions" of the same - * (insb/insw/insl/outsb/outsw/outsl). You can also use "pausing" - * versions of the single-IO instructions (inb_p/inw_p/..). - * - * This file is not meant to be obfuscating: it's just complicated - * to (a) handle it all in a way that makes gcc able to optimize it - * as well as possible and (b) trying to avoid writing the same thing - * over and over again with slight variations and possibly making a - * mistake somewhere. - */ - -/* - * Thanks to James van Artsdalen for a better timing-fix than - * the two short jumps: using outb's to a nonexistent port seems - * to guarantee better timings even on fast machines. - * - * On the other hand, I'd like to be sure of a non-existent port: - * I feel a bit unsafe about using 0x80 (should be safe, though) - * - * Linus - */ - - /* - * Bit simplified and optimized by Jan Hubicka - * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999. - * - * isa_memset_io, isa_memcpy_fromio, isa_memcpy_toio added, - * isa_read[wl] and isa_write[wl] fixed - * - Arnaldo Carvalho de Melo <acme@conectiva.com.br> - */ - -#define __SLOW_DOWN_IO "\noutb %%al,$0x80" - -#ifdef REALLY_SLOW_IO -#define __FULL_SLOW_DOWN_IO __SLOW_DOWN_IO __SLOW_DOWN_IO __SLOW_DOWN_IO __SLOW_DOWN_IO -#else -#define __FULL_SLOW_DOWN_IO __SLOW_DOWN_IO -#endif - -/* - * Talk about misusing macros.. - */ -#define __OUT1(s,x) \ -static inline void out##s(unsigned x value, unsigned short port) { - -#define __OUT2(s,s1,s2) \ -__asm__ __volatile__ ("out" #s " %" s1 "0,%" s2 "1" - -#define __OUT(s,s1,x) \ -__OUT1(s,x) __OUT2(s,s1,"w") : : "a" (value), "Nd" (port)); } \ -__OUT1(s##_p,x) __OUT2(s,s1,"w") __FULL_SLOW_DOWN_IO : : "a" (value), "Nd" (port));} \ - -#define __IN1(s) \ -static inline RETURN_TYPE in##s(unsigned short port) { RETURN_TYPE _v; - -#define __IN2(s,s1,s2) \ -__asm__ __volatile__ ("in" #s " %" s2 "1,%" s1 "0" - -#define __IN(s,s1,i...) \ -__IN1(s) __IN2(s,s1,"w") : "=a" (_v) : "Nd" (port) ,##i ); return _v; } \ -__IN1(s##_p) __IN2(s,s1,"w") __FULL_SLOW_DOWN_IO : "=a" (_v) : "Nd" (port) ,##i ); return _v; } \ - -#define __INS(s) \ -static inline void ins##s(unsigned short port, void * addr, unsigned long count) \ -{ __asm__ __volatile__ ("rep ; ins" #s \ -: "=D" (addr), "=c" (count) : "d" (port),"0" (addr),"1" (count)); } - -#define __OUTS(s) \ -static inline void outs##s(unsigned short port, const void * addr, unsigned long count) \ -{ __asm__ __volatile__ ("rep ; outs" #s \ -: "=S" (addr), "=c" (count) : "d" (port),"0" (addr),"1" (count)); } - -#define RETURN_TYPE unsigned char -__IN(b,"") -#undef RETURN_TYPE -#define RETURN_TYPE unsigned short -__IN(w,"") -#undef RETURN_TYPE -#define RETURN_TYPE unsigned int -__IN(l,"") -#undef RETURN_TYPE - -__OUT(b,"b",char) -__OUT(w,"w",short) -__OUT(l,,int) - -__INS(b) -__INS(w) -__INS(l) - -__OUTS(b) -__OUTS(w) -__OUTS(l) - -#define IO_SPACE_LIMIT 0xffff - -#if defined(__KERNEL__) && __x86_64__ - -#include <linux/vmalloc.h> - -#ifndef __i386__ -/* - * Change virtual addresses to physical addresses and vv. - * These are pretty trivial - */ -static inline unsigned long virt_to_phys(volatile void * address) -{ - return __pa(address); -} - -static inline void * phys_to_virt(unsigned long address) -{ - return __va(address); -} - -#define virt_to_bus(_x) phys_to_machine(__pa(_x)) -#define bus_to_virt(_x) __va(machine_to_phys(_x)) -#endif - -/* - * Change "struct page" to physical address. - */ -#define page_to_pseudophys(page) ((dma_addr_t)page_to_pfn(page) << PAGE_SHIFT) -#define page_to_phys(page) (phys_to_machine(page_to_pseudophys(page))) -#define page_to_bus(page) (phys_to_machine(page_to_pseudophys(page))) - -#define bio_to_pseudophys(bio) (page_to_pseudophys(bio_page((bio))) + \ - (unsigned long) bio_offset((bio))) -#define bvec_to_pseudophys(bv) (page_to_pseudophys((bv)->bv_page) + \ - (unsigned long) (bv)->bv_offset) - -#define BIOVEC_PHYS_MERGEABLE(vec1, vec2) \ - (((bvec_to_phys((vec1)) + (vec1)->bv_len) == bvec_to_phys((vec2))) && \ - ((bvec_to_pseudophys((vec1)) + (vec1)->bv_len) == \ - bvec_to_pseudophys((vec2)))) - -#include <asm-generic/iomap.h> - -extern void __iomem *__ioremap(unsigned long offset, unsigned long size, unsigned long flags); - -static inline void __iomem * ioremap (unsigned long offset, unsigned long size) -{ - return __ioremap(offset, size, 0); -} - -extern void *bt_ioremap(unsigned long addr, unsigned long size); -extern void bt_iounmap(void *addr, unsigned long size); -#define early_ioremap bt_ioremap -#define early_iounmap bt_iounmap - -/* - * This one maps high address device memory and turns off caching for that area. - * it's useful if some control registers are in such an area and write combining - * or read caching is not desirable: - */ -extern void __iomem * ioremap_nocache (unsigned long offset, unsigned long size); -extern void iounmap(volatile void __iomem *addr); - -/* - * ISA I/O bus memory addresses are 1:1 with the physical address. - */ - -#define isa_virt_to_bus(_x) isa_virt_to_bus_is_UNSUPPORTED->x -#define isa_page_to_bus(_x) isa_page_to_bus_is_UNSUPPORTED->x -#define isa_bus_to_virt(_x) (void *)(__fix_to_virt(FIX_ISAMAP_BEGIN) + (_x)) - -/* - * However PCI ones are not necessarily 1:1 and therefore these interfaces - * are forbidden in portable PCI drivers. - * - * Allow them on x86 for legacy drivers, though. - */ -#define virt_to_bus(_x) phys_to_machine(__pa(_x)) -#define bus_to_virt(_x) __va(machine_to_phys(_x)) - -/* - * readX/writeX() are used to access memory mapped devices. On some - * architectures the memory mapped IO stuff needs to be accessed - * differently. On the x86 architecture, we just read/write the - * memory location directly. - */ - -static inline __u8 __readb(const volatile void __iomem *addr) -{ - return *(__force volatile __u8 *)addr; -} -static inline __u16 __readw(const volatile void __iomem *addr) -{ - return *(__force volatile __u16 *)addr; -} -static __always_inline __u32 __readl(const volatile void __iomem *addr) -{ - return *(__force volatile __u32 *)addr; -} -static inline __u64 __readq(const volatile void __iomem *addr) -{ - return *(__force volatile __u64 *)addr; -} -#define readb(x) __readb(x) -#define readw(x) __readw(x) -#define readl(x) __readl(x) -#define readq(x) __readq(x) -#define readb_relaxed(a) readb(a) -#define readw_relaxed(a) readw(a) -#define readl_relaxed(a) readl(a) -#define readq_relaxed(a) readq(a) -#define __raw_readb readb -#define __raw_readw readw -#define __raw_readl readl -#define __raw_readq readq - -#define mmiowb() - -static inline void __writel(__u32 b, volatile void __iomem *addr) -{ - *(__force volatile __u32 *)addr = b; -} -static inline void __writeq(__u64 b, volatile void __iomem *addr) -{ - *(__force volatile __u64 *)addr = b; -} -static inline void __writeb(__u8 b, volatile void __iomem *addr) -{ - *(__force volatile __u8 *)addr = b; -} -static inline void __writew(__u16 b, volatile void __iomem *addr) -{ - *(__force volatile __u16 *)addr = b; -} -#define writeq(val,addr) __writeq((val),(addr)) -#define writel(val,addr) __writel((val),(addr)) -#define writew(val,addr) __writew((val),(addr)) -#define writeb(val,addr) __writeb((val),(addr)) -#define __raw_writeb writeb -#define __raw_writew writew -#define __raw_writel writel -#define __raw_writeq writeq - -void __memcpy_fromio(void*,unsigned long,unsigned); -void __memcpy_toio(unsigned long,const void*,unsigned); - -static inline void memcpy_fromio(void *to, const volatile void __iomem *from, unsigned len) -{ - __memcpy_fromio(to,(unsigned long)from,len); -} -static inline void memcpy_toio(volatile void __iomem *to, const void *from, unsigned len) -{ - __memcpy_toio((unsigned long)to,from,len); -} - -void memset_io(volatile void __iomem *a, int b, size_t c); - -/* - * ISA space is 'always mapped' on a typical x86 system, no need to - * explicitly ioremap() it. The fact that the ISA IO space is mapped - * to PAGE_OFFSET is pure coincidence - it does not mean ISA values - * are physical addresses. The following constant pointer can be - * used as the IO-area pointer (it can be iounmapped as well, so the - * analogy with PCI is quite large): - */ -#define __ISA_IO_base ((char __iomem *)(fix_to_virt(FIX_ISAMAP_BEGIN))) - -/* - * Again, x86-64 does not require mem IO specific function. - */ - -#define eth_io_copy_and_sum(a,b,c,d) eth_copy_and_sum((a),(void *)(b),(c),(d)) - -/** - * check_signature - find BIOS signatures - * @io_addr: mmio address to check - * @signature: signature block - * @length: length of signature - * - * Perform a signature comparison with the mmio address io_addr. This - * address should have been obtained by ioremap. - * Returns 1 on a match. - */ - -static inline int check_signature(void __iomem *io_addr, - const unsigned char *signature, int length) -{ - int retval = 0; - do { - if (readb(io_addr) != *signature) - goto out; - io_addr++; - signature++; - length--; - } while (length); - retval = 1; -out: - return retval; -} - -/* Nothing to do */ - -#define dma_cache_inv(_start,_size) do { } while (0) -#define dma_cache_wback(_start,_size) do { } while (0) -#define dma_cache_wback_inv(_start,_size) do { } while (0) - -#define flush_write_buffers() - -extern int iommu_bio_merge; -#define BIO_VMERGE_BOUNDARY iommu_bio_merge - -/* - * Convert a physical pointer to a virtual kernel pointer for /dev/mem - * access - */ -#define xlate_dev_mem_ptr(p, sz) ioremap(p, sz) -#define xlate_dev_mem_ptr_unmap(p) iounmap(p) - -/* - * Convert a virtual cached pointer to an uncached pointer - */ -#define xlate_dev_kmem_ptr(p) p - -#endif /* __KERNEL__ */ - -#define ARCH_HAS_DEV_MEM - -#endif |