1c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifndef _ASM_IO_H 2c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define _ASM_IO_H 3c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 4c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <linux/string.h> 5c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <linux/compiler.h> 6c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 7c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 8c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * This file contains the definitions for the x86 IO instructions 9c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * inb/inw/inl/outb/outw/outl and the "string versions" of the same 10c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * (insb/insw/insl/outsb/outsw/outsl). You can also use "pausing" 11c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * versions of the single-IO instructions (inb_p/inw_p/..). 12c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 13c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * This file is not meant to be obfuscating: it's just complicated 14c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * to (a) handle it all in a way that makes gcc able to optimize it 15c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * as well as possible and (b) trying to avoid writing the same thing 16c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * over and over again with slight variations and possibly making a 17c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * mistake somewhere. 18c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 19c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 20c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 21c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Thanks to James van Artsdalen for a better timing-fix than 22c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * the two short jumps: using outb's to a nonexistent port seems 23c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * to guarantee better timings even on fast machines. 24c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 25c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * On the other hand, I'd like to be sure of a non-existent port: 26c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * I feel a bit unsafe about using 0x80 (should be safe, though) 27c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 28c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Linus 29c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 30c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 31c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru /* 32c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Bit simplified and optimized by Jan Hubicka 33c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999. 34c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 35c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * isa_memset_io, isa_memcpy_fromio, isa_memcpy_toio added, 36c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * isa_read[wl] and isa_write[wl] fixed 37c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * - Arnaldo Carvalho de Melo <acme@conectiva.com.br> 38c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 39c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 40c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IO_SPACE_LIMIT 0xffff 41c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 42c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define XQUAD_PORTIO_BASE 0xfe400000 43c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define XQUAD_PORTIO_QUAD 0x40000 /* 256k per quad. */ 44c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 45c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifdef __KERNEL__ 46c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 47c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <asm-generic/iomap.h> 48c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 49c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <linux/vmalloc.h> 50c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 51c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 52c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Convert a physical pointer to a virtual kernel pointer for /dev/mem 53c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * access 54c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 55c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define xlate_dev_mem_ptr(p) __va(p) 56c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 57c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 58c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Convert a virtual cached pointer to an uncached pointer 59c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 60c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define xlate_dev_kmem_ptr(p) p 61c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 62c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/** 63c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * virt_to_phys - map virtual addresses to physical 64c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * @address: address to remap 65c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 66c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * The returned physical address is the physical (CPU) mapping for 67c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * the memory address given. It is only valid to use this function on 68c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * addresses directly mapped or allocated via kmalloc. 69c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 70c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * This function does not give bus mappings for DMA transfers. In 71c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * almost all conceivable cases a device driver should not be using 72c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * this function 73c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 74c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 75c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline unsigned long virt_to_phys(volatile void * address) 76c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 77c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return __pa(address); 78c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 79c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 80c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/** 81c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * phys_to_virt - map physical address to virtual 82c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * @address: address to remap 83c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 84c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * The returned virtual address is a current CPU mapping for 85c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * the memory address given. It is only valid to use this function on 86c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * addresses that have a kernel mapping 87c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 88c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * This function does not handle bus mappings for DMA transfers. In 89c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * almost all conceivable cases a device driver should not be using 90c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * this function 91c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 92c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 93c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void * phys_to_virt(unsigned long address) 94c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 95c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return __va(address); 96c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 97c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 98c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 99c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Change "struct page" to physical address. 100c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 101c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define page_to_phys(page) ((dma_addr_t)page_to_pfn(page) << PAGE_SHIFT) 102c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 103c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern void __iomem * __ioremap(unsigned long offset, unsigned long size, unsigned long flags); 104c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 105c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/** 106c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * ioremap - map bus memory into CPU space 107c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * @offset: bus address of the memory 108c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * @size: size of the resource to map 109c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 110c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * ioremap performs a platform specific sequence of operations to 111c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * make bus memory CPU accessible via the readb/readw/readl/writeb/ 112c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * writew/writel functions and the other mmio helpers. The returned 113c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * address is not guaranteed to be usable directly as a virtual 114c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * address. 115c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 116c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * If the area you are trying to map is a PCI BAR you should have a 117c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * look at pci_iomap(). 118c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 119c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 120c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void __iomem * ioremap(unsigned long offset, unsigned long size) 121c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 122c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return __ioremap(offset, size, 0); 123c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 124c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 125c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern void __iomem * ioremap_nocache(unsigned long offset, unsigned long size); 126c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern void iounmap(volatile void __iomem *addr); 127c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 128c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 129c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * bt_ioremap() and bt_iounmap() are for temporary early boot-time 130c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * mappings, before the real ioremap() is functional. 131c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * A boot-time mapping is currently limited to at most 16 pages. 132c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 133c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern void *bt_ioremap(unsigned long offset, unsigned long size); 134c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern void bt_iounmap(void *addr, unsigned long size); 135c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern void __iomem *fix_ioremap(unsigned idx, unsigned long phys); 136c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 137c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* Use early IO mappings for DMI because it's initialized early */ 138c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define dmi_ioremap bt_ioremap 139c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define dmi_iounmap bt_iounmap 140c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define dmi_alloc alloc_bootmem 141c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 142c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 143c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * ISA I/O bus memory addresses are 1:1 with the physical address. 144c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 145c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define isa_virt_to_bus virt_to_phys 146c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define isa_page_to_bus page_to_phys 147c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define isa_bus_to_virt phys_to_virt 148c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 149c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 150c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * However PCI ones are not necessarily 1:1 and therefore these interfaces 151c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * are forbidden in portable PCI drivers. 152c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 153c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Allow them on x86 for legacy drivers, though. 154c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 155c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define virt_to_bus virt_to_phys 156c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define bus_to_virt phys_to_virt 157c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 158c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 159c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * readX/writeX() are used to access memory mapped devices. On some 160c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * architectures the memory mapped IO stuff needs to be accessed 161c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * differently. On the x86 architecture, we just read/write the 162c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * memory location directly. 163c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 164c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 165c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline unsigned char readb(const volatile void __iomem *addr) 166c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 167c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return *(volatile unsigned char __force *) addr; 168c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 169c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline unsigned short readw(const volatile void __iomem *addr) 170c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 171c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return *(volatile unsigned short __force *) addr; 172c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 173c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline unsigned int readl(const volatile void __iomem *addr) 174c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 175c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return *(volatile unsigned int __force *) addr; 176c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 177c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define readb_relaxed(addr) readb(addr) 178c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define readw_relaxed(addr) readw(addr) 179c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define readl_relaxed(addr) readl(addr) 180c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define __raw_readb readb 181c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define __raw_readw readw 182c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define __raw_readl readl 183c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 184c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void writeb(unsigned char b, volatile void __iomem *addr) 185c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 186c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru *(volatile unsigned char __force *) addr = b; 187c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 188c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void writew(unsigned short b, volatile void __iomem *addr) 189c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 190c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru *(volatile unsigned short __force *) addr = b; 191c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 192c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void writel(unsigned int b, volatile void __iomem *addr) 193c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 194c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru *(volatile unsigned int __force *) addr = b; 195c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 196c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define __raw_writeb writeb 197c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define __raw_writew writew 198c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define __raw_writel writel 199c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 200c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define mmiowb() 201c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 202c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void 203c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querumemset_io(volatile void __iomem *addr, unsigned char val, int count) 204c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 205c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru memset((void __force *)addr, val, count); 206c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 207c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 208c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void 209c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querumemcpy_fromio(void *dst, const volatile void __iomem *src, int count) 210c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 211c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __memcpy(dst, (const void __force *)src, count); 212c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 213c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 214c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void 215c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querumemcpy_toio(volatile void __iomem *dst, const void *src, int count) 216c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 217c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __memcpy((void __force *)dst, src, count); 218c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 219c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 220c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 221c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * ISA space is 'always mapped' on a typical x86 system, no need to 222c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * explicitly ioremap() it. The fact that the ISA IO space is mapped 223c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * to PAGE_OFFSET is pure coincidence - it does not mean ISA values 224c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * are physical addresses. The following constant pointer can be 225c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * used as the IO-area pointer (it can be iounmapped as well, so the 226c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * analogy with PCI is quite large): 227c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 228c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define __ISA_IO_base ((char __iomem *)(PAGE_OFFSET)) 229c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 230c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 231c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Cache management 232c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 233c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * This needed for two cases 234c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 1. Out of order aware processors 235c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 2. Accidentally out of order processors (PPro errata #51) 236c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 237c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 238c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#if defined(CONFIG_X86_OOSTORE) || defined(CONFIG_X86_PPRO_FENCE) 239c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 240c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void flush_write_buffers(void) 241c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 242c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __asm__ __volatile__ ("lock; addl $0,0(%%esp)": : :"memory"); 243c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 244c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 245c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#else 246c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 247c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define flush_write_buffers() do { } while (0) 248c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 249c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif 250c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 251c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif /* __KERNEL__ */ 252c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 253c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void native_io_delay(void) 254c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 255c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru asm volatile("outb %%al,$0x80" : : : "memory"); 256c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 257c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 258c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#if defined(CONFIG_PARAVIRT) 259c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <asm/paravirt.h> 260c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#else 261c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 262c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void slow_down_io(void) { 263c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru native_io_delay(); 264c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifdef REALLY_SLOW_IO 265c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru native_io_delay(); 266c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru native_io_delay(); 267c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru native_io_delay(); 268c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif 269c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 270c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 271c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif 272c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 273c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifdef CONFIG_X86_NUMAQ 274c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern void *xquad_portio; /* Where the IO area was mapped */ 275c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define XQUAD_PORT_ADDR(port, quad) (xquad_portio + (XQUAD_PORTIO_QUAD*quad) + port) 276c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define __BUILDIO(bwl,bw,type) \ 277c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void out##bwl##_quad(unsigned type value, int port, int quad) { \ 278c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru if (xquad_portio) \ 279c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru write##bwl(value, XQUAD_PORT_ADDR(port, quad)); \ 280c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru else \ 281c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru out##bwl##_local(value, port); \ 282c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} \ 283c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void out##bwl(unsigned type value, int port) { \ 284c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru out##bwl##_quad(value, port, 0); \ 285c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} \ 286c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline unsigned type in##bwl##_quad(int port, int quad) { \ 287c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru if (xquad_portio) \ 288c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return read##bwl(XQUAD_PORT_ADDR(port, quad)); \ 289c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru else \ 290c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return in##bwl##_local(port); \ 291c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} \ 292c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline unsigned type in##bwl(int port) { \ 293c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return in##bwl##_quad(port, 0); \ 294c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 295c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#else 296c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define __BUILDIO(bwl,bw,type) \ 297c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void out##bwl(unsigned type value, int port) { \ 298c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru out##bwl##_local(value, port); \ 299c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} \ 300c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline unsigned type in##bwl(int port) { \ 301c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return in##bwl##_local(port); \ 302c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 303c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif 304c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 305c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 306c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define BUILDIO(bwl,bw,type) \ 307c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void out##bwl##_local(unsigned type value, int port) { \ 308c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __asm__ __volatile__("out" #bwl " %" #bw "0, %w1" : : "a"(value), "Nd"(port)); \ 309c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} \ 310c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline unsigned type in##bwl##_local(int port) { \ 311c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned type value; \ 312c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __asm__ __volatile__("in" #bwl " %w1, %" #bw "0" : "=a"(value) : "Nd"(port)); \ 313c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return value; \ 314c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} \ 315c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void out##bwl##_local_p(unsigned type value, int port) { \ 316c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru out##bwl##_local(value, port); \ 317c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru slow_down_io(); \ 318c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} \ 319c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline unsigned type in##bwl##_local_p(int port) { \ 320c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned type value = in##bwl##_local(port); \ 321c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru slow_down_io(); \ 322c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return value; \ 323c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} \ 324c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru__BUILDIO(bwl,bw,type) \ 325c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void out##bwl##_p(unsigned type value, int port) { \ 326c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru out##bwl(value, port); \ 327c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru slow_down_io(); \ 328c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} \ 329c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline unsigned type in##bwl##_p(int port) { \ 330c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned type value = in##bwl(port); \ 331c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru slow_down_io(); \ 332c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return value; \ 333c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} \ 334c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void outs##bwl(int port, const void *addr, unsigned long count) { \ 335c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __asm__ __volatile__("rep; outs" #bwl : "+S"(addr), "+c"(count) : "d"(port)); \ 336c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} \ 337c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void ins##bwl(int port, void *addr, unsigned long count) { \ 338c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __asm__ __volatile__("rep; ins" #bwl : "+D"(addr), "+c"(count) : "d"(port)); \ 339c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 340c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 341c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste QueruBUILDIO(b,b,char) 342c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste QueruBUILDIO(w,w,short) 343c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste QueruBUILDIO(l,,int) 344c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 345c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif 346