include/linux/ioport.h

   1 /*
   2  * ioport.h     Definitions of routines for detecting, reserving and
   3  *              allocating system resources.
   4  *
   5  * Authors:     Linus Torvalds
   6  */
   7
   8 #ifndef _LINUX_IOPORT_H
   9 #define _LINUX_IOPORT_H
  10
  11 /*
  12  * Resources are tree-like, allowing
  13  * nesting etc..
  14  */
  15 struct resource {
  16         const char *name;
  17         unsigned long start, end;
  18         unsigned long flags;
  19         struct resource *parent, *sibling, *child;
  20 };
  21
  22 extern struct resource pci_io_resource;
  23 extern struct resource pci_mem_resource;
  24
  25 extern void reserve_setup(char *str, int *ints);
  26 extern int get_resource_list(struct resource *, char *buf, int size);
  27
  28 extern int request_resource(struct resource *root, struct resource *new);
  29 extern int release_resource(struct resource *new);
  30
  31 /* Convenience shorthand with allocation */
  32 #define request_region(start,n,name)    __request_region(&pci_io_resource, (start), (n), (name))
  33 extern struct resource * __request_region(struct resource *, unsigned long start, unsigned long n, const char *name);
  34
  35 /* Compatibility cruft */
  36 #define check_region(start,n)   __check_region(&pci_io_resource, (start), (n))
  37 #define release_region(start,n) __release_region(&pci_io_resource, (start), (n))
  38 extern int __check_region(struct resource *, unsigned long, unsigned long);
  39 extern void __release_region(struct resource *, unsigned long, unsigned long);
  40
  41 #define get_ioport_list(buf)    get_resource_list(&pci_io_resource, buf, PAGE_SIZE)
  42 #define get_mem_list(buf)       get_resource_list(&pci_mem_resource, buf, PAGE_SIZE)
  43
  44 #define HAVE_AUTOIRQ
  45 extern void autoirq_setup(int waittime);
  46 extern int autoirq_report(int waittime);
  47
  48 #endif  /* _LINUX_IOPORT_H */