| device.9 (cefd51ec44292b8783adfd5cb1c5994e40c55595) | device.9 (a04dd7481b80786760f38ff3902e24851fc7ef37) |
|---|---|
| 1.\" -*- nroff -*- 2.\" 3.\" Copyright (c) 1998 Doug Rabson 4.\" 5.\" All rights reserved. 6.\" 7.\" This program is free software. 8.\" --- 12 unchanged lines hidden (view full) --- 21.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 22.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28.\" | 1.\" -*- nroff -*- 2.\" 3.\" Copyright (c) 1998 Doug Rabson 4.\" 5.\" All rights reserved. 6.\" 7.\" This program is free software. 8.\" --- 12 unchanged lines hidden (view full) --- 21.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 22.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28.\" |
| 29.\" $Id$ | 29.\" $Id: device.9,v 1.1 1998/09/03 21:52:05 dfr Exp $ |
| 30.\" 31.Dd June 16, 1998 32.Dt device 9 33.Os FreeBSD 34.Sh NAME 35.Nm device 36.Nd an abstract representation of a device | 30.\" 31.Dd June 16, 1998 32.Dt device 9 33.Os FreeBSD 34.Sh NAME 35.Nm device 36.Nd an abstract representation of a device |
| 37.Sh SYNOPSYS | 37.Sh SYNOPSIS |
| 38.Dv typedef struct device *device_t; 39.Sh DESCRIPTION 40.Pp 41The device object represents a piece of hardware attached to the 42system such as an expansion card, the bus which that card is plugged 43into, disk drives attached to the expansion card etc. 44The system defines one device, 45.Dv root_bus 46and all other devices are created dynamically during 47autoconfiguration. Normally devices representing toplevel busses in 48the system (ISA, PCI etc.) will be attached directly to 49.Dv root_bus | 38.Dv typedef struct device *device_t; 39.Sh DESCRIPTION 40.Pp 41The device object represents a piece of hardware attached to the 42system such as an expansion card, the bus which that card is plugged 43into, disk drives attached to the expansion card etc. 44The system defines one device, 45.Dv root_bus 46and all other devices are created dynamically during 47autoconfiguration. Normally devices representing toplevel busses in 48the system (ISA, PCI etc.) will be attached directly to 49.Dv root_bus |
| 50and other devices will be added as children of their relavent bus. | 50and other devices will be added as children of their relevant bus. |
| 51.Pp 52The devices in a system form a tree. All devices except 53.Dv root_bus 54have a parent (see 55.Xr device_get_parent 9 ). 56In addition, any device can have children attached to it (see 57.Xr device_add_child 9 , 58.Xr device_add_child_after 9 , --- 44 unchanged lines hidden --- | 51.Pp 52The devices in a system form a tree. All devices except 53.Dv root_bus 54have a parent (see 55.Xr device_get_parent 9 ). 56In addition, any device can have children attached to it (see 57.Xr device_add_child 9 , 58.Xr device_add_child_after 9 , --- 44 unchanged lines hidden --- |