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authoriap10@labyrinth.cl.cam.ac.uk <iap10@labyrinth.cl.cam.ac.uk>2003-06-27 14:18:00 +0000
committeriap10@labyrinth.cl.cam.ac.uk <iap10@labyrinth.cl.cam.ac.uk>2003-06-27 14:18:00 +0000
commit6d56b5e5e2f3caed77003fb913cd9f71e06de7f3 (patch)
tree8bd2ebe9796f3e7951660e3cf06318a3d2d34a1d /xenolinux-2.4.21-pre4-sparse/include/asm-xeno/io.h
parentc0535d5e52c6d6f5cb1d5b8cc3be1eb8f69244be (diff)
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bitkeeper revision 1.258 (3efc5218v9et-leaVGHVRu-faTh56g)
update to official 2.4.21 kernel from 2.4.21-pre4
Diffstat (limited to 'xenolinux-2.4.21-pre4-sparse/include/asm-xeno/io.h')
-rw-r--r--xenolinux-2.4.21-pre4-sparse/include/asm-xeno/io.h376
1 files changed, 0 insertions, 376 deletions
diff --git a/xenolinux-2.4.21-pre4-sparse/include/asm-xeno/io.h b/xenolinux-2.4.21-pre4-sparse/include/asm-xeno/io.h
deleted file mode 100644
index 77a99d1ef0..0000000000
--- a/xenolinux-2.4.21-pre4-sparse/include/asm-xeno/io.h
+++ /dev/null
@@ -1,376 +0,0 @@
-#ifndef _ASM_IO_H
-#define _ASM_IO_H
-
-#include <linux/config.h>
-#include <asm/hypervisor.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 IO_SPACE_LIMIT 0xffff
-
-#define XQUAD_PORTIO_BASE 0xfe400000
-#define XQUAD_PORTIO_QUAD 0x40000 /* 256k per quad. */
-#define XQUAD_PORTIO_LEN 0x80000 /* Only remapping first 2 quads */
-
-#ifdef __KERNEL__
-
-#include <linux/vmalloc.h>
-
-/*
- * Temporary debugging check to catch old code using
- * unmapped ISA addresses. Will be removed in 2.4.
- */
-#if CONFIG_DEBUG_IOVIRT
- extern void *__io_virt_debug(unsigned long x, const char *file, int line);
- extern unsigned long __io_phys_debug(unsigned long x, const char *file, int line);
- #define __io_virt(x) __io_virt_debug((unsigned long)(x), __FILE__, __LINE__)
-//#define __io_phys(x) __io_phys_debug((unsigned long)(x), __FILE__, __LINE__)
-#else
- #define __io_virt(x) ((void *)(x))
-//#define __io_phys(x) __pa(x)
-#endif
-
-/**
- * virt_to_phys - map virtual addresses to physical
- * @address: address to remap
- *
- * The returned physical address is the physical (CPU) mapping for
- * the memory address given. It is only valid to use this function on
- * addresses directly mapped or allocated via kmalloc.
- *
- * This function does not give bus mappings for DMA transfers. In
- * almost all conceivable cases a device driver should not be using
- * this function
- */
-
-static inline unsigned long virt_to_phys(volatile void * address)
-{
- return __pa(address);
-}
-
-/**
- * phys_to_virt - map physical address to virtual
- * @address: address to remap
- *
- * The returned virtual address is a current CPU mapping for
- * the memory address given. It is only valid to use this function on
- * addresses that have a kernel mapping
- *
- * This function does not handle bus mappings for DMA transfers. In
- * almost all conceivable cases a device driver should not be using
- * this function
- */
-
-static inline void * phys_to_virt(unsigned long address)
-{
- return __va(address);
-}
-
-/*
- * Change "struct page" to physical address.
- */
-#ifdef CONFIG_HIGHMEM64G
-#define page_to_phys(page) ((u64)(page - mem_map) << PAGE_SHIFT)
-#else
-#define page_to_phys(page) ((page - mem_map) << PAGE_SHIFT)
-#endif
-
-/*
- * IO bus memory addresses are also 1:1 with the physical address
- */
-#define virt_to_bus virt_to_phys
-#define bus_to_virt phys_to_virt
-#define page_to_bus page_to_phys
-
-/*
- * 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.
- */
-
-#define readb(addr) (*(volatile unsigned char *) __io_virt(addr))
-#define readw(addr) (*(volatile unsigned short *) __io_virt(addr))
-#define readl(addr) (*(volatile unsigned int *) __io_virt(addr))
-#define __raw_readb readb
-#define __raw_readw readw
-#define __raw_readl readl
-
-#define writeb(b,addr) (*(volatile unsigned char *) __io_virt(addr) = (b))
-#define writew(b,addr) (*(volatile unsigned short *) __io_virt(addr) = (b))
-#define writel(b,addr) (*(volatile unsigned int *) __io_virt(addr) = (b))
-#define __raw_writeb writeb
-#define __raw_writew writew
-#define __raw_writel writel
-
-#define memset_io(a,b,c) __memset(__io_virt(a),(b),(c))
-#define memcpy_fromio(a,b,c) __memcpy((a),__io_virt(b),(c))
-#define memcpy_toio(a,b,c) __memcpy(__io_virt(a),(b),(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 *)(PAGE_OFFSET))
-
-#define isa_readb(a) readb(__ISA_IO_base + (a))
-#define isa_readw(a) readw(__ISA_IO_base + (a))
-#define isa_readl(a) readl(__ISA_IO_base + (a))
-#define isa_writeb(b,a) writeb(b,__ISA_IO_base + (a))
-#define isa_writew(w,a) writew(w,__ISA_IO_base + (a))
-#define isa_writel(l,a) writel(l,__ISA_IO_base + (a))
-#define isa_memset_io(a,b,c) memset_io(__ISA_IO_base + (a),(b),(c))
-#define isa_memcpy_fromio(a,b,c) memcpy_fromio((a),__ISA_IO_base + (b),(c))
-#define isa_memcpy_toio(a,b,c) memcpy_toio(__ISA_IO_base + (a),(b),(c))
-
-
-/*
- * Again, i386 does not require mem IO specific function.
- */
-
-#define eth_io_copy_and_sum(a,b,c,d) eth_copy_and_sum((a),__io_virt(b),(c),(d))
-#define isa_eth_io_copy_and_sum(a,b,c,d) eth_copy_and_sum((a),__io_virt(__ISA_IO_base + (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(unsigned long 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;
-}
-
-/**
- * isa_check_signature - find BIOS signatures
- * @io_addr: mmio address to check
- * @signature: signature block
- * @length: length of signature
- *
- * Perform a signature comparison with the ISA mmio address io_addr.
- * Returns 1 on a match.
- *
- * This function is deprecated. New drivers should use ioremap and
- * check_signature.
- */
-
-
-static inline int isa_check_signature(unsigned long io_addr,
- const unsigned char *signature, int length)
-{
- int retval = 0;
- do {
- if (isa_readb(io_addr) != *signature)
- goto out;
- io_addr++;
- signature++;
- length--;
- } while (length);
- retval = 1;
-out:
- return retval;
-}
-
-/*
- * Cache management
- *
- * This needed for two cases
- * 1. Out of order aware processors
- * 2. Accidentally out of order processors (PPro errata #51)
- */
-
-#if defined(CONFIG_X86_OOSTORE) || defined(CONFIG_X86_PPRO_FENCE)
-
-static inline void flush_write_buffers(void)
-{
- __asm__ __volatile__ ("lock; addl $0,0(%%esp)": : :"memory");
-}
-
-#define dma_cache_inv(_start,_size) flush_write_buffers()
-#define dma_cache_wback(_start,_size) flush_write_buffers()
-#define dma_cache_wback_inv(_start,_size) flush_write_buffers()
-
-#else
-
-/* 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()
-
-#endif
-
-#endif /* __KERNEL__ */
-
-#ifdef SLOW_IO_BY_JUMPING
-#define __SLOW_DOWN_IO "\njmp 1f\n1:\tjmp 1f\n1:"
-#else
-#define __SLOW_DOWN_IO "\noutb %%al,$0x80"
-#endif
-
-#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
-
-#ifdef CONFIG_MULTIQUAD
-extern void *xquad_portio; /* Where the IO area was mapped */
-#endif /* CONFIG_MULTIQUAD */
-
-/*
- * 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"
-
-#if defined (CONFIG_MULTIQUAD) && !defined(STANDALONE)
-#define __OUTQ(s,ss,x) /* Do the equivalent of the portio op on quads */ \
-static inline void out##ss(unsigned x value, unsigned short port) { \
- if (xquad_portio) \
- write##s(value, (unsigned long) xquad_portio + port); \
- else /* We're still in early boot, running on quad 0 */ \
- out##ss##_local(value, port); \
-} \
-static inline void out##ss##_quad(unsigned x value, unsigned short port, int quad) { \
- if (xquad_portio) \
- write##s(value, (unsigned long) xquad_portio + (XQUAD_PORTIO_QUAD*quad)\
- + port); \
-}
-
-#define __INQ(s,ss) /* Do the equivalent of the portio op on quads */ \
-static inline RETURN_TYPE in##ss(unsigned short port) { \
- if (xquad_portio) \
- return read##s((unsigned long) xquad_portio + port); \
- else /* We're still in early boot, running on quad 0 */ \
- return in##ss##_local(port); \
-} \
-static inline RETURN_TYPE in##ss##_quad(unsigned short port, int quad) { \
- if (xquad_portio) \
- return read##s((unsigned long) xquad_portio + (XQUAD_PORTIO_QUAD*quad)\
- + port); \
- else\
- return 0;\
-}
-#endif /* CONFIG_MULTIQUAD && !STANDALONE */
-
-#if !defined(CONFIG_MULTIQUAD) || defined(STANDALONE)
-#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));}
-#else
-/* Make the default portio routines operate on quad 0 */
-#define __OUT(s,s1,x) \
-__OUT1(s##_local,x) __OUT2(s,s1,"w") : : "a" (value), "Nd" (port)); } \
-__OUT1(s##_p_local,x) __OUT2(s,s1,"w") __FULL_SLOW_DOWN_IO : : "a" (value), "Nd" (port));} \
-__OUTQ(s,s,x) \
-__OUTQ(s,s##_p,x)
-#endif /* !CONFIG_MULTIQUAD || STANDALONE */
-
-#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"
-
-#if !defined(CONFIG_MULTIQUAD) || defined(STANDALONE)
-#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; }
-#else
-/* Make the default portio routines operate on quad 0 */
-#define __IN(s,s1,i...) \
-__IN1(s##_local) __IN2(s,s1,"w") : "=a" (_v) : "Nd" (port) ,##i ); return _v; } \
-__IN1(s##_p_local) __IN2(s,s1,"w") __FULL_SLOW_DOWN_IO : "=a" (_v) : "Nd" (port) ,##i ); return _v; } \
-__INQ(s,s) \
-__INQ(s,s##_p)
-#endif /* !CONFIG_MULTIQUAD || STANDALONE */
-
-#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)
-
-#endif