129 lines
4.3 KiB
C
129 lines
4.3 KiB
C
/*
|
|
* ioport.h Definitions of routines for detecting, reserving and
|
|
* allocating system resources.
|
|
*
|
|
* Authors: Linus Torvalds
|
|
*/
|
|
|
|
#ifndef _LINUX_IOPORT_H
|
|
#define _LINUX_IOPORT_H
|
|
|
|
#ifndef __ASSEMBLY__
|
|
#include <linux/compiler.h>
|
|
#include <linux/types.h>
|
|
/*
|
|
* Resources are tree-like, allowing
|
|
* nesting etc..
|
|
*/
|
|
struct resource {
|
|
resource_size_t start;
|
|
resource_size_t end;
|
|
const char *name;
|
|
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_TYPE_BITS 0x00001f00 /* Resource type */
|
|
#define IORESOURCE_IO 0x00000100 /* PCI/ISA I/O ports */
|
|
#define IORESOURCE_MEM 0x00000200
|
|
#define IORESOURCE_REG 0x00000300 /* Register offsets */
|
|
#define IORESOURCE_IRQ 0x00000400
|
|
#define IORESOURCE_DMA 0x00000800
|
|
#define IORESOURCE_BUS 0x00001000
|
|
|
|
#define IORESOURCE_PREFETCH 0x00002000 /* No side effects */
|
|
#define IORESOURCE_READONLY 0x00004000
|
|
#define IORESOURCE_CACHEABLE 0x00008000
|
|
#define IORESOURCE_RANGELENGTH 0x00010000
|
|
#define IORESOURCE_SHADOWABLE 0x00020000
|
|
|
|
#define IORESOURCE_SIZEALIGN 0x00040000 /* size indicates alignment */
|
|
#define IORESOURCE_STARTALIGN 0x00080000 /* start field is alignment */
|
|
|
|
#define IORESOURCE_MEM_64 0x00100000
|
|
#define IORESOURCE_WINDOW 0x00200000 /* forwarded by bridge */
|
|
#define IORESOURCE_MUXED 0x00400000 /* Resource is software muxed */
|
|
|
|
#define IORESOURCE_EXCLUSIVE 0x08000000 /* Userland may not map this resource */
|
|
#define IORESOURCE_DISABLED 0x10000000
|
|
#define IORESOURCE_UNSET 0x20000000 /* No address assigned yet */
|
|
#define IORESOURCE_AUTO 0x40000000
|
|
#define IORESOURCE_BUSY 0x80000000 /* Driver has marked this resource busy */
|
|
|
|
/* 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)
|
|
#define IORESOURCE_IRQ_SHAREABLE (1<<4)
|
|
#define IORESOURCE_IRQ_OPTIONAL (1<<5)
|
|
|
|
/* 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)
|
|
|
|
/* 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_32BIT (3<<3)
|
|
#define IORESOURCE_MEM_SHADOWABLE (1<<5) /* dup: IORESOURCE_SHADOWABLE */
|
|
#define IORESOURCE_MEM_EXPANSIONROM (1<<6)
|
|
|
|
/* PnP I/O specific bits (IORESOURCE_BITS) */
|
|
#define IORESOURCE_IO_16BIT_ADDR (1<<0)
|
|
#define IORESOURCE_IO_FIXED (1<<1)
|
|
|
|
/* PCI ROM control bits (IORESOURCE_BITS) */
|
|
#define IORESOURCE_ROM_ENABLE (1<<0) /* ROM is enabled, same as PCI_ROM_ADDRESS_ENABLE */
|
|
#define IORESOURCE_ROM_SHADOW (1<<1) /* ROM is copy at C000:0 */
|
|
#define IORESOURCE_ROM_COPY (1<<2) /* ROM is alloc'd copy, resource field overlaid */
|
|
#define IORESOURCE_ROM_BIOS_COPY (1<<3) /* ROM is BIOS copy, resource field overlaid */
|
|
|
|
/* PCI control bits. Shares IORESOURCE_BITS with above PCI ROM. */
|
|
#define IORESOURCE_PCI_FIXED (1<<4) /* Do not move resource */
|
|
|
|
/* PC/ISA/whatever - the normal PC address spaces: IO and memory */
|
|
extern struct resource ioport_resource;
|
|
extern struct resource iomem_resource;
|
|
|
|
static inline resource_size_t resource_size(const struct resource *res)
|
|
{
|
|
return res->end - res->start + 1;
|
|
}
|
|
static inline unsigned long resource_type(const struct resource *res)
|
|
{
|
|
return res->flags & IORESOURCE_TYPE_BITS;
|
|
}
|
|
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
#endif /* _LINUX_IOPORT_H */
|