Viewing file:  ioport.h (4.18 KB) -rw-r--r--
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/*
* ioport.h Definitions of routines for detecting, reserving and
* allocating system resources.
*
* Authors: Linus Torvalds
*/
#ifndef _LINUX_IOPORT_H
#define _LINUX_IOPORT_H
/*
* Resources are tree-like, allowing
* nesting etc..
*/
struct resource {
const char *name;
unsigned long start, end;
unsigned long flags;
struct resource *parent, *sibling, *child;
};
struct resource_list {
struct resource_list *next;
struct resource *res;
struct pci_dev *dev;
};
/*
* IO resources have these defined flags.
*/
#define IORESOURCE_BITS 0x000000ff /* Bus-specific bits */
#define IORESOURCE_IO 0x00000100 /* Resource type */
#define IORESOURCE_MEM 0x00000200
#define IORESOURCE_IRQ 0x00000400
#define IORESOURCE_DMA 0x00000800
#define IORESOURCE_PREFETCH 0x00001000 /* No side effects */
#define IORESOURCE_READONLY 0x00002000
#define IORESOURCE_CACHEABLE 0x00004000
#define IORESOURCE_RANGELENGTH 0x00008000
#define IORESOURCE_SHADOWABLE 0x00010000
#define IORESOURCE_BUS_HAS_VGA 0x00080000
#define IORESOURCE_UNSET 0x20000000
#define IORESOURCE_AUTO 0x40000000
#define IORESOURCE_BUSY 0x80000000 /* Driver has marked this resource busy */
/* ISA PnP IRQ specific bits (IORESOURCE_BITS) */
#define IORESOURCE_IRQ_HIGHEDGE (1<<0)
#define IORESOURCE_IRQ_LOWEDGE (1<<1)
#define IORESOURCE_IRQ_HIGHLEVEL (1<<2)
#define IORESOURCE_IRQ_LOWLEVEL (1<<3)
/* ISA PnP DMA specific bits (IORESOURCE_BITS) */
#define IORESOURCE_DMA_TYPE_MASK (3<<0)
#define IORESOURCE_DMA_8BIT (0<<0)
#define IORESOURCE_DMA_8AND16BIT (1<<0)
#define IORESOURCE_DMA_16BIT (2<<0)
#define IORESOURCE_DMA_MASTER (1<<2)
#define IORESOURCE_DMA_BYTE (1<<3)
#define IORESOURCE_DMA_WORD (1<<4)
#define IORESOURCE_DMA_SPEED_MASK (3<<6)
#define IORESOURCE_DMA_COMPATIBLE (0<<6)
#define IORESOURCE_DMA_TYPEA (1<<6)
#define IORESOURCE_DMA_TYPEB (2<<6)
#define IORESOURCE_DMA_TYPEF (3<<6)
/* ISA PnP memory I/O specific bits (IORESOURCE_BITS) */
#define IORESOURCE_MEM_WRITEABLE (1<<0) /* dup: IORESOURCE_READONLY */
#define IORESOURCE_MEM_CACHEABLE (1<<1) /* dup: IORESOURCE_CACHEABLE */
#define IORESOURCE_MEM_RANGELENGTH (1<<2) /* dup: IORESOURCE_RANGELENGTH */
#define IORESOURCE_MEM_TYPE_MASK (3<<3)
#define IORESOURCE_MEM_8BIT (0<<3)
#define IORESOURCE_MEM_16BIT (1<<3)
#define IORESOURCE_MEM_8AND16BIT (2<<3)
#define IORESOURCE_MEM_SHADOWABLE (1<<5) /* dup: IORESOURCE_SHADOWABLE */
#define IORESOURCE_MEM_EXPANSIONROM (1<<6)
/* PC/ISA/whatever - the normal PC address spaces: IO and memory */
extern struct resource ioport_resource;
extern struct resource iomem_resource;
extern int get_resource_list(struct resource *, char *buf, int size);
extern int check_resource(struct resource *root, unsigned long, unsigned long);
extern int request_resource(struct resource *root, struct resource *new);
extern int release_resource(struct resource *new);
extern int allocate_resource(struct resource *root, struct resource *new,
unsigned long size,
unsigned long min, unsigned long max,
unsigned long align,
void (*alignf)(void *, struct resource *, unsigned long),
void *alignf_data);
/* Convenience shorthand with allocation */
#define request_region(start,n,name) __request_region(&ioport_resource, (start), (n), (name))
#define request_mem_region(start,n,name) __request_region(&iomem_resource, (start), (n), (name))
extern struct resource * __request_region(struct resource *, unsigned long start, unsigned long n, const char *name);
/* Compatibility cruft */
#define check_region(start,n) __check_region(&ioport_resource, (start), (n))
#define release_region(start,n) __release_region(&ioport_resource, (start), (n))
#define check_mem_region(start,n) __check_region(&iomem_resource, (start), (n))
#define release_mem_region(start,n) __release_region(&iomem_resource, (start), (n))
extern int __check_region(struct resource *, unsigned long, unsigned long);
extern void __release_region(struct resource *, unsigned long, unsigned long);
#define get_ioport_list(buf) get_resource_list(&ioport_resource, buf, PAGE_SIZE)
#define get_mem_list(buf) get_resource_list(&iomem_resource, buf, PAGE_SIZE)
#define HAVE_AUTOIRQ
extern void autoirq_setup(int waittime);
extern int autoirq_report(int waittime);
#endif /* _LINUX_IOPORT_H */
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