07-30-2013
Lspci: PCI Devices?
hey everyone, just a general question. I did an lspci on my home computer, and it got me thinking... When I hear pci..I think of the physical slots on your motherboard. usually beige in color.. But the list returned to me is of atleast 20 items. None of which, (besides the graphics card) is plugged into a pci slot... Some things like memory controller, 1,4,5, high definition audio, Address map, DRAM controller, and the most bizarre, Serial ATA Controller... So does this mean, that these devices built onto the motherboard are using the same PCI bus that have the two slots on my board? And why is a SATA controller using a PCI bus? And lastly, how many devices can all comfortably live on 1 bus? Or are all these different PCI buses?
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FIREWIRE(4) BSD Kernel Interfaces Manual FIREWIRE(4)
NAME
firewire -- IEEE1394 High-performance Serial Bus
SYNOPSIS
To compile this driver into the kernel, place the following line in your kernel configuration file:
device firewire
Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):
firewire_load="YES"
DESCRIPTION
FreeBSD provides machine-independent bus support and raw drivers for firewire interfaces.
The firewire driver consists of two layers: the controller and the bus layer. The controller attaches to a physical bus (like pci(4)). The
firewire bus attaches to the controller. Additional drivers can be attached to the bus.
Up to 63 devices, including the host itself, can be attached to a firewire bus. The root node is dynamically assigned with a PHY device
function. Also, the other firewire bus specific parameters, e.g., node ID, cycle master, isochronous resource manager and bus manager, are
dynamically assigned, after bus reset is initiated. On the firewire bus, every device is identified by an EUI 64 address.
FILES
/dev/fw0.0
/dev/fwmem0.0
SEE ALSO
fwe(4), fwip(4), fwohci(4), pci(4), sbp(4), eui64(5), fwcontrol(8), kldload(8), sysctl(8)
HISTORY
The firewire driver first appeared in FreeBSD 5.0.
AUTHORS
The firewire driver was written by Katsushi Kobayashi and Hidetoshi Shimokawa for the FreeBSD project.
BUGS
See fwohci(4) for security notes.
BSD
April 1, 2006 BSD