1c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 2c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * ioport.h Definitions of routines for detecting, reserving and 3c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * allocating system resources. 4c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 5c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Authors: Linus Torvalds 6c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 7c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 8c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifndef _LINUX_IOPORT_H 9c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define _LINUX_IOPORT_H 10c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 11c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <linux/compiler.h> 12c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <linux/types.h> 13c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 14c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Resources are tree-like, allowing 15c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * nesting etc.. 16c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 17c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct resource { 18c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru resource_size_t start; 19c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru resource_size_t end; 20c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru const char *name; 21c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long flags; 22c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct resource *parent, *sibling, *child; 23c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 24c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 25c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct resource_list { 26c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct resource_list *next; 27c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct resource *res; 28c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct pci_dev *dev; 29c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 30c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 31c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 32c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * IO resources have these defined flags. 33c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 34c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_BITS 0x000000ff /* Bus-specific bits */ 35c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 36c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_IO 0x00000100 /* Resource type */ 37c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_MEM 0x00000200 38c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_IRQ 0x00000400 39c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_DMA 0x00000800 40c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 41c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_PREFETCH 0x00001000 /* No side effects */ 42c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_READONLY 0x00002000 43c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_CACHEABLE 0x00004000 44c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_RANGELENGTH 0x00008000 45c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_SHADOWABLE 0x00010000 46c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_BUS_HAS_VGA 0x00080000 47c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 48c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_DISABLED 0x10000000 49c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_UNSET 0x20000000 50c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_AUTO 0x40000000 51c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_BUSY 0x80000000 /* Driver has marked this resource busy */ 52c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 53c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* ISA PnP IRQ specific bits (IORESOURCE_BITS) */ 54c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_IRQ_HIGHEDGE (1<<0) 55c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_IRQ_LOWEDGE (1<<1) 56c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_IRQ_HIGHLEVEL (1<<2) 57c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_IRQ_LOWLEVEL (1<<3) 58c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_IRQ_SHAREABLE (1<<4) 59c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 60c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* ISA PnP DMA specific bits (IORESOURCE_BITS) */ 61c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_DMA_TYPE_MASK (3<<0) 62c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_DMA_8BIT (0<<0) 63c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_DMA_8AND16BIT (1<<0) 64c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_DMA_16BIT (2<<0) 65c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 66c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_DMA_MASTER (1<<2) 67c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_DMA_BYTE (1<<3) 68c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_DMA_WORD (1<<4) 69c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 70c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_DMA_SPEED_MASK (3<<6) 71c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_DMA_COMPATIBLE (0<<6) 72c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_DMA_TYPEA (1<<6) 73c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_DMA_TYPEB (2<<6) 74c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_DMA_TYPEF (3<<6) 75c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 76c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* ISA PnP memory I/O specific bits (IORESOURCE_BITS) */ 77c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_MEM_WRITEABLE (1<<0) /* dup: IORESOURCE_READONLY */ 78c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_MEM_CACHEABLE (1<<1) /* dup: IORESOURCE_CACHEABLE */ 79c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_MEM_RANGELENGTH (1<<2) /* dup: IORESOURCE_RANGELENGTH */ 80c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_MEM_TYPE_MASK (3<<3) 81c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_MEM_8BIT (0<<3) 82c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_MEM_16BIT (1<<3) 83c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_MEM_8AND16BIT (2<<3) 84c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_MEM_32BIT (3<<3) 85c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_MEM_SHADOWABLE (1<<5) /* dup: IORESOURCE_SHADOWABLE */ 86c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_MEM_EXPANSIONROM (1<<6) 87c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 88c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* PCI ROM control bits (IORESOURCE_BITS) */ 89c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_ROM_ENABLE (1<<0) /* ROM is enabled, same as PCI_ROM_ADDRESS_ENABLE */ 90c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_ROM_SHADOW (1<<1) /* ROM is copy at C000:0 */ 91c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define IORESOURCE_ROM_COPY (1<<2) /* ROM is alloc'd copy, resource field overlaid */ 92c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 93c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* PC/ISA/whatever - the normal PC address spaces: IO and memory */ 94c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern struct resource ioport_resource; 95c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern struct resource iomem_resource; 96c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 97c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int request_resource(struct resource *root, struct resource *new); 98c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern struct resource * ____request_resource(struct resource *root, struct resource *new); 99c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int release_resource(struct resource *new); 100c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int insert_resource(struct resource *parent, struct resource *new); 101c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int allocate_resource(struct resource *root, struct resource *new, 102c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru resource_size_t size, resource_size_t min, 103c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru resource_size_t max, resource_size_t align, 104c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru void (*alignf)(void *, struct resource *, 105c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru resource_size_t, resource_size_t), 106c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru void *alignf_data); 107c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruint adjust_resource(struct resource *res, resource_size_t start, 108c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru resource_size_t size); 109c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 110c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* get registered SYSTEM_RAM resources in specified area */ 111c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int find_next_system_ram(struct resource *res); 112c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 113c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* Convenience shorthand with allocation */ 114c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define request_region(start,n,name) __request_region(&ioport_resource, (start), (n), (name)) 115c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define request_mem_region(start,n,name) __request_region(&iomem_resource, (start), (n), (name)) 116c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define rename_region(region, newname) do { (region)->name = (newname); } while (0) 117c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 118c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern struct resource * __request_region(struct resource *, 119c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru resource_size_t start, 120c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru resource_size_t n, const char *name); 121c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 122c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* Compatibility cruft */ 123c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define release_region(start,n) __release_region(&ioport_resource, (start), (n)) 124c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define check_mem_region(start,n) __check_region(&iomem_resource, (start), (n)) 125c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define release_mem_region(start,n) __release_region(&iomem_resource, (start), (n)) 126c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 127c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int __check_region(struct resource *, resource_size_t, resource_size_t); 128c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern void __release_region(struct resource *, resource_size_t, 129c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru resource_size_t); 130c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 131c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline int __deprecated check_region(resource_size_t s, 132c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru resource_size_t n) 133c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 134c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return __check_region(&ioport_resource, s, n); 135c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 136c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif /* _LINUX_IOPORT_H */ 137