include/linux/ioport.h

21 struct resource {  struct
27 	struct resource *parent, *sibling, *child;  argument
33  * PCI devices expose these flags to userspace in the "resource" sysfs file,
38 #define IORESOURCE_TYPE_BITS	0x00001f00	/* Resource type */
57 #define IORESOURCE_MUXED	0x00400000	/* Resource is software muxed */
59 #define IORESOURCE_EXT_TYPE_BITS 0x01000000	/* Resource extended types */
64 #define IORESOURCE_SYSRAM_MERGEABLE		0x04000000 /* Resource can be merged. */
66 #define IORESOURCE_EXCLUSIVE	0x08000000	/* Userland may not map this resource */
71 #define IORESOURCE_BUSY		0x80000000	/* Driver has marked this resource busy */
73 /* I/O resource extended types */
124 #define IORESOURCE_PCI_FIXED		(1<<4)	/* Do not move resource */
128  * I/O Resource Descriptors
131  * for searching a specific resource range in the iomem table.  Assign
132  * a new descriptor when a resource range supports the search interfaces.
133  * Otherwise, resource.desc must be set to IORES_DESC_NONE (0).
158 (struct resource) {							\
197  * typedef resource_alignf - Resource alignment callback
199  * @res:	Resource candidate range (an empty resource space)
203  * Callback allows calculating resource placement and alignment beyond min,
206  * Return: Start address for the resource.
209 					   const struct resource *res,
215  *				resource space
233 extern struct resource ioport_resource;
234 extern struct resource iomem_resource;
236 extern struct resource *request_resource_conflict(struct resource *root, struct resource *new);
237 extern int request_resource(struct resource *root, struct resource *new);
238 extern int release_resource(struct resource *new);
239 void release_child_resources(struct resource *new);
240 extern void reserve_region_with_split(struct resource *root,
243 extern struct resource *insert_resource_conflict(struct resource *parent, struct resource *new);
244 extern int insert_resource(struct resource *parent, struct resource *new);
245 extern void insert_resource_expand_to_fit(struct resource *root, struct resource *new);
246 extern int remove_resource(struct resource *old);
247 extern void arch_remove_reservations(struct resource *avail);
248 extern int allocate_resource(struct resource *root, struct resource *new,
253 struct resource *lookup_resource(struct resource *root, resource_size_t start);
254 int adjust_resource(struct resource *res, resource_size_t start,
256 resource_size_t resource_alignment(struct resource *res);
259  * resource_set_size - Calculate resource end address from size and start
260  * @res: Resource descriptor
261  * @size: Size of the resource
268 static inline void resource_set_size(struct resource *res, resource_size_t size)  in resource_set_size()
274  * resource_set_range - Set resource start and end addresses
275  * @res: Resource descriptor
276  * @start: Start address for the resource
277  * @size: Size of the resource
281 static inline void resource_set_range(struct resource *res,  in resource_set_range()
289 static inline resource_size_t resource_size(const struct resource *res)  in resource_size()
293 static inline unsigned long resource_type(const struct resource *res)  in resource_type()
297 static inline unsigned long resource_ext_type(const struct resource *res)  in resource_ext_type()
302 static inline bool resource_contains(const struct resource *r1, const struct resource *r2)  in resource_contains()
312 static inline bool resource_overlaps(const struct resource *r1, const struct resource *r2)  in resource_overlaps()
317 static inline bool resource_intersection(const struct resource *r1, const struct resource *r2,  in resource_intersection()
318 					 struct resource *r)  in resource_intersection()
327 static inline bool resource_union(const struct resource *r1, const struct resource *r2,  in resource_union()
328 				  struct resource *r)  in resource_union()
337 int find_resource_space(struct resource *root, struct resource *new,
351 extern struct resource * __request_region(struct resource *,
360 extern void __release_region(struct resource *, resource_size_t,
366 extern void merge_system_ram_resource(struct resource *res);
372 extern int devm_request_resource(struct device *dev, struct resource *root,
373 				 struct resource *new);
374 extern void devm_release_resource(struct device *dev, struct resource *new);
381 extern struct resource * __devm_request_region(struct device *dev,
382 				struct resource *parent, resource_size_t start,
390 extern void __devm_release_region(struct device *dev, struct resource *parent,
394 extern bool resource_is_exclusive(struct resource *resource, u64 addr,
402 	     int (*func)(struct resource *, void *));
405 		    int (*func)(struct resource *, void *));
408 			int (*func)(struct resource *, void *));
411 		    void *arg, int (*func)(struct resource *, void *));
413 struct resource *devm_request_free_mem_region(struct device *dev,
414 		struct resource *base, unsigned long size);
415 struct resource *request_free_mem_region(struct resource *base,
417 struct resource *alloc_free_mem_region(struct resource *base,
420 static inline void irqresource_disabled(struct resource *res, u32 irq)  in irqresource_disabled()