DragonFly On-Line Manual Pages

Search: Section:  


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

Search: Section: