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BUS_SET_RESOURCE(9)   DragonFly Kernel Developer's Manual  BUS_SET_RESOURCE(9)


NAME

     bus_set_resource -- associate a definite resource with a given resource
     ID


SYNOPSIS

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

     int
     bus_set_resource(device_t dev, int type, int rid, u_long start,
         u_long count, int cpuid);


DESCRIPTION

     The bus_set_resource() function sets the start address of the resource
     type, rid pair to be count long.  Typically, client drivers do not use
     this interface.  Bus drivers, however, often use it to set up the
     resources a client driver uses.

     The arguments are as follows:

     dev    The device to set the resource on.

     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_MEMORY  for I/O memory
            SYS_RES_IOPORT  for I/O ports

     rid    A bus-specific handle that identifies the resource being allo-
            cated.

     start  The start address of this resource.

     count  The length of the resource.  For example, the size of the memory
            in bytes.

     cpuid  Owner CPU for interrupt resources. Other resource types, e.g.
            IOPORT, MEMORY and DRQ, are shared across CPUs, so this parameter
            has to be set to -1


RETURN VALUES

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


SEE ALSO

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


AUTHORS

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

DragonFly 3.5                   October 4, 2011                  DragonFly 3.5

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