c32928c579
ACPI supplies a "shareable" indication, but PNPACPI ignores it. If a PNP
device uses a shared interrupt, request_irq() fails because the PNP driver
can't tell whether to supply SA_SHIRQ.
This patch allows PNP drivers to test
(pnp_irq_flags(dev, 0) & IORESOURCE_IRQ_SHAREABLE)
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Adam Belay <ambx1@neo.rr.com>
Cc: Matthieu Castet <castet.matthieu@free.fr>
Cc: Li Shaohua <shaohua.li@intel.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
137 lines
4.8 KiB
C
137 lines
4.8 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
|
|
|
|
#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_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_DISABLED 0x10000000
|
|
#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)
|
|
#define IORESOURCE_IRQ_SHAREABLE (1<<4)
|
|
|
|
/* 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_32BIT (3<<3)
|
|
#define IORESOURCE_MEM_SHADOWABLE (1<<5) /* dup: IORESOURCE_SHADOWABLE */
|
|
#define IORESOURCE_MEM_EXPANSIONROM (1<<6)
|
|
|
|
/* 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 */
|
|
|
|
/* PC/ISA/whatever - the normal PC address spaces: IO and memory */
|
|
extern struct resource ioport_resource;
|
|
extern struct resource iomem_resource;
|
|
|
|
extern int request_resource(struct resource *root, struct resource *new);
|
|
extern struct resource * ____request_resource(struct resource *root, struct resource *new);
|
|
extern int release_resource(struct resource *new);
|
|
extern __deprecated_for_modules int insert_resource(struct resource *parent, struct resource *new);
|
|
extern int allocate_resource(struct resource *root, struct resource *new,
|
|
resource_size_t size, resource_size_t min,
|
|
resource_size_t max, resource_size_t align,
|
|
void (*alignf)(void *, struct resource *,
|
|
resource_size_t, resource_size_t),
|
|
void *alignf_data);
|
|
int adjust_resource(struct resource *res, resource_size_t start,
|
|
resource_size_t size);
|
|
|
|
/* get registered SYSTEM_RAM resources in specified area */
|
|
extern int find_next_system_ram(struct resource *res);
|
|
|
|
/* 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))
|
|
#define rename_region(region, newname) do { (region)->name = (newname); } while (0)
|
|
|
|
extern struct resource * __request_region(struct resource *,
|
|
resource_size_t start,
|
|
resource_size_t n, const char *name);
|
|
|
|
/* Compatibility cruft */
|
|
#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 *, resource_size_t, resource_size_t);
|
|
extern void __release_region(struct resource *, resource_size_t,
|
|
resource_size_t);
|
|
|
|
static inline int __deprecated check_region(resource_size_t s,
|
|
resource_size_t n)
|
|
{
|
|
return __check_region(&ioport_resource, s, n);
|
|
}
|
|
#endif /* _LINUX_IOPORT_H */
|