Copyright (c) 2003 M. Warner Losh All rights reserved. This program is free software. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer...
NAMEbus_activate_resource , bus_deactivate_resource - activate or deactivate a resource
SYNOPSISIn sys/param.h In sys/bus.h
In machine/bus.h In sys/rman.h In machine/resource.h Ft int Fo bus_activate_resource Fa device_t dev int type int rid struct resource *r Fc Ft int Fo bus_deactivate_resource Fa device_t dev int type int rid struct resource *r Fc
DESCRIPTIONThese 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:
- Fa dev
- The device that requests ownership of the resource. Before allocation, the resource is owned by the parent bus.
- Fa type
The type of resource you want to allocate.
It is one of:
- for IRQs
- for ISA DMA lines
- for I/O ports
- for I/O memory
- Fa rid
- A pointer to a bus specific handle that identifies the resource being allocated.
- Fa r
- A pointer to the Vt struct resource returned by bus_alloc_resource9.