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author | iap10@labyrinth.cl.cam.ac.uk <iap10@labyrinth.cl.cam.ac.uk> | 2003-06-27 14:18:00 +0000 |
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committer | iap10@labyrinth.cl.cam.ac.uk <iap10@labyrinth.cl.cam.ac.uk> | 2003-06-27 14:18:00 +0000 |
commit | 6d56b5e5e2f3caed77003fb913cd9f71e06de7f3 (patch) | |
tree | 8bd2ebe9796f3e7951660e3cf06318a3d2d34a1d /xenolinux-2.4.21-pre4-sparse/include/asm-xeno/io.h | |
parent | c0535d5e52c6d6f5cb1d5b8cc3be1eb8f69244be (diff) | |
download | xen-6d56b5e5e2f3caed77003fb913cd9f71e06de7f3.tar.gz xen-6d56b5e5e2f3caed77003fb913cd9f71e06de7f3.tar.bz2 xen-6d56b5e5e2f3caed77003fb913cd9f71e06de7f3.zip |
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.h | 376 |
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 |