resource_long_value(9) [freebsd man page]

RESOURCE_INT_VALUE(9)					   BSD Kernel Developer's Manual				     RESOURCE_INT_VALUE(9)

NAME

     resource_int_value, resource_long_value, resource_string_value -- get a value from the hints mechanism

SYNOPSIS

     #include <sys/param.h>
     #include <sys/bus.h>

     int
     resource_int_value(const char *name, int unit, const char *resname, int *result);

     int
     resource_long_value(const char *name, int unit, const char *resname, long *result);

     int
     resource_string_value(const char *name, int unit, const char *resname, const char **result);

DESCRIPTION

     These functions fetch a value from the ``hints'' mechanism.

     The functions take the following arguments:

     name     The name of the device to get the resource value from.

     unit     The unit number of the device.  -1 is special and is used for wildcard entries.

     resname  The resource name.

     result   A pointer to memory in which to store the resource value.

RETURN VALUES

     If successful, the functions return 0.  Otherwise, a non-zero error code is returned.

ERRORS

     The functions will fail if:

     [ENOENT]		The resource could not be found.

     [EFTYPE]		Inappropriate resource type.

SEE ALSO

     device(9), driver(9)

AUTHORS

     This manual page was written by Warner Losh <imp@FreeBSD.org>.

BSD
								   March 1, 2001							       BSD

BUS_ACTIVATE_RESOURCE(9)				   BSD Kernel Developer's Manual				  BUS_ACTIVATE_RESOURCE(9)

NAME

     bus_activate_resource, bus_deactivate_resource -- activate or deactivate a resource

SYNOPSIS

     #include <sys/param.h>
     #include <sys/bus.h>

     #include <machine/bus.h>
     #include <sys/rman.h>
     #include <machine/resource.h>

     int
     bus_activate_resource(device_t dev, int type, int rid, struct resource *r);

     int
     bus_deactivate_resource(device_t dev, int type, int rid, struct resource *r);

DESCRIPTION

     These functions activate or deactivate a previously allocated resource.  In general, resources must be activated before they can be accessed
     by the driver so that the bus driver can map the resource into the devices space.

     The arguments are as follows:

     dev     The device that requests ownership of the resource.  Before allocation, the resource is owned by the parent bus.

     type    The type of resource you want to allocate.  It is one of:

	     SYS_RES_IRQ     for IRQs
	     SYS_RES_DRQ     for ISA DMA lines
	     SYS_RES_IOPORT  for I/O ports
	     SYS_RES_MEMORY  for I/O memory

     rid     A pointer to a bus specific handle that identifies the resource being allocated.

     r	     A pointer to the struct resource returned by bus_alloc_resource(9).

RETURN VALUES

     Zero is returned on success, otherwise an error is returned.

SEE ALSO

     bus_alloc_resource(9), device(9), driver(9)

AUTHORS

     This manual page was written by Warner Losh <imp@FreeBSD.org>.

BSD
								  March 28, 2003							       BSD