SIMPLE SOLUTIONS

BUS_ACTIVATE_RESOURCE(9FREEBSD) - man page online | system kernel interfaces

Activate or deactivate a resource.

Chapter
March 28, 2003
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 <@FreeBSD.org>.
BSD March 28, 2003 BSD
This manual Reference Other manuals
bus_activate_resource(9freebsd) referred by bus_alloc_resource(9freebsd) | bus_alloc_resource_any(9freebsd) | bus_deactivate_resource(9freebsd) | pci(9freebsd) | pci_alloc_msi(9freebsd) | pci_alloc_msix(9freebsd) | pci_disable_busmaster(9freebsd) | pci_disable_io(9freebsd) | pci_enable_busmaster(9freebsd) | pci_enable_io(9freebsd) | pci_find_bsf(9freebsd) | pci_find_cap(9freebsd) | pci_find_dbsf(9freebsd) | pci_find_device(9freebsd) | pci_find_extcap(9freebsd) | pci_find_htcap(9freebsd) | pci_get_max_read_req(9freebsd) | pci_get_powerstate(9freebsd) | pci_get_vpd_ident(9freebsd) | pci_get_vpd_readonly(9freebsd)
refer to bus_alloc_resource(9freebsd) | device(9freebsd) | driver(9freebsd)