Author: jhb
Date: Wed Nov 17 22:28:04 2010
New Revision: 215443
URL: http://svn.freebsd.org/changeset/base/215443
Log:
Add a resource_list_reserved() method that returns true if a resource
list entry contains a reserved resource.
Modified:
head/sys/kern/subr_bus.c
head/sys/sys/bus.h
Modified: head/sys/kern/subr_bus.c
==============================================================================
--- head/sys/kern/subr_bus.c Wed Nov 17 21:45:11 2010 (r215442)
+++ head/sys/kern/subr_bus.c Wed Nov 17 22:28:04 2010 (r215443)
@@ -2934,6 +2934,30 @@ resource_list_busy(struct resource_list
}
/**
+ * @brief Determine if a resource entry is reserved.
+ *
+ * Returns true if a resource entry is reserved meaning that it has an
+ * associated "reserved" resource. The resource can either be
+ * allocated or unallocated.
+ *
+ * @param rl the resource list to search
+ * @param type the resource entry type (e.g. SYS_RES_MEMORY)
+ * @param rid the resource identifier
+ *
+ * @returns Non-zero if the entry is reserved, zero otherwise.
+ */
+int
+resource_list_reserved(struct resource_list *rl, int type, int rid)
+{
+ struct resource_list_entry *rle;
+
+ rle = resource_list_find(rl, type, rid);
+ if (rle != NULL && rle->flags & RLE_RESERVED)
+ return (1);
+ return (0);
+}
+
+/**
* @brief Find a resource entry by type and rid.
*
* @param rl the resource list to search
Modified: head/sys/sys/bus.h
==============================================================================
--- head/sys/sys/bus.h Wed Nov 17 21:45:11 2010 (r215442)
+++ head/sys/sys/bus.h Wed Nov 17 22:28:04 2010 (r215443)
@@ -256,6 +256,7 @@ int resource_list_add_next(struct resour
u_long start, u_long end, u_long count);
int resource_list_busy(struct resource_list *rl,
int type, int rid);
+int resource_list_reserved(struct resource_list *rl, int type, int rid);
struct resource_list_entry*
resource_list_find(struct resource_list *rl,
int type, int rid);
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