man/man4/pci.4

.\"	$OpenBSD: pci.4,v 1.44 2001/09/05 09:14:51 deraadt Exp $
.\"	$NetBSD: pci.4,v 1.29 2000/04/01 00:32:23 tsarna Exp $
.\"
.\" Copyright (c) 2000 Theo de Raadt.  All rights reserved.
.\" Copyright (c) 1997 Jason R. Thorpe.  All rights reserved.
.\" Copyright (c) 1997 Jonathan Stone
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.Dd April 3, 2000
.Dt PCI 4
.Os
.Sh NAME
.Nm pci
.Nd introduction to PCI bus support
.Sh SYNOPSIS
.Cd "pci* at mainbus? bus ?"
.Cd "pci* at pchb? bus ?"
.Cd "pci* at ppb? bus ?"
.Pp
Other
.Nm pci
attachments are machine-dependent and depend on the bus topology and
.Tn PCI
bus interface of your system.
See
.Xr intro 4
for your system for details.
.Sh DESCRIPTION
The system includes a machine-independent
.Tn PCI
bus subsystem and
several machine-independent
.Tn PCI
device drivers.
.Pp
Your system may support additional
.Tn PCI
devices.
Drivers for
.Tn PCI
devices not listed here are machine-dependent.
Consult your system's
.Xr intro 4
for additional information.
.Pp
.Ss Details specific to the i386
Note that interrupt mappings on the i386 may require that you configure
your BIOS to reserve sufficient interrupts as "PCI/ISAPnP" so that there
are sufficient interrupts remaining to configure the discovered PCI
devices.  For more information, see
.Xr pcibios 4 .
.Sh SUPPORTED DEVICES
The system includes machine-independent
.Tn PCI
drivers, sorted by device type and driver name:
.Ss SCSI host adapters
.Bl -tag -width 10n -offset ind
.It Xr adw 4 , Xr adv 4
AdvanSys PCI
.Tn SCSI
interfaces.
.It Xr ahc 4
Adaptec 27xx, 29xx, 39xx, 29160, and other AIC-7xxx-based
.Tn SCSI
interfaces.
.It Xr bt 4
Buslogic BT-9xx
.Tn SCSI
interfaces.
.It Xr isp 4
QLogic ISP-1020, ISP-1040, and ISP-2100
.Tn SCSI
and
.Tn FibreChannel
interfaces.
.It Xr iha 4
Initio INIC-940 and INIC-950 based
.Tn SCSI
interfaces.
.It Xr ncr 4 , Xr siop 4
LSI/Symbios Logic/NCR 53c8xx and 53c1010-family
.Tn SCSI
interfaces.
.It Xr pcscp 4
AMD Am53c974 PCscsi-PCI
.Tn SCSI
interfaces.
.El
.Ss RAID and cache controllers
.Bl -tag -width 10n -offset ind
.It Xr aac 4
Adaptec "FSA" family (Adaptec AAC, Dell PERC, HP NetRaid)
.Tn RAID
controllers.
.It Xr ami 4
American Megatrends Inc. MegaRAID family
.Tn RAID
controllers.
.It Xr cac 4
Compaq Smart ARRAY
.Tn RAID
controllers.
.It Xr dpt 4
DPT SmartCache/SmartRAID III and IV
.Tn SCSI
controllers.
.It Xr gdt 4
ICP-Vortex GDT
.Tn RAID
controllers.
.It Xr iop 4
Generic
.Tn I2O
specification
.Tn RAID
controllers.
.It Xr twe 4
3ware Escalade
.Tn RAID
controllers.
.El
.Ss Network interfaces
.Bl -tag -width 10n -offset ind
.It Xr an 4
Aironet Communications 4500/4800 IEEE 802.11DS wireless network adapter.
.It Xr dc 4
Various Tulip-like Ethernet
interfaces such as the DEC/Intel 21143;
Macronix 98713, 98713A, 98715, 98715A, 98725, 98727, and 98732;
Davicom DM9100, DM9102, and DM9102A;
ASIX Electronics AX88140A and AX88141;
ADMtek AL981 Comet and AN983 Centaur-P;
Lite-On 82c168 and 82c169 PNIC;
and
Lite-On/Macronix 82c115 PNIC II.
.It Xr de 4
.Tn DEC
DC21x4x (Tulip) based Ethernet
interfaces, including the DE435, DE450, DE500;
Znyx ZX3xx;
SMC 8432, 9332, 9334;
Cogent/Adaptec EM100FX and EM440TX;
and Asante single- and multi-port
Ethernet interfaces.
Multi-port interfaces are typically configured as
.Tn PCI Ns \- Ns Tn PCI
bridges with multiple
.Xr de 4
instances on the
.Tn PCI
bus on the other side of the bridge.
.It Xr en 4
Midway-based Efficient Networks Inc. and Adaptec ATM interfaces.
.It Xr ep 4
3Com 3c590 and 3c595 Ethernet interfaces.
.It Xr fpa 4
.Tn DEC
DEFPA
.Tn FDDI
interfaces.
.It Xr fxp 4
Intel EtherExpress PRO 10+/100B Ethernet interfaces.
.It Xr le 4
PCNet-PCI Ethernet interfaces.
.It Xr lge 4
Level 1 LXT1001 NetCellerator PCI Gigabit Ethernet.
.It Xr lmc 4
Lan Media Corporation
.Tn SSI/DS1/HSSI/DS3
interfaces.
.It Xr ne 4
NE2000-compatible Ethernet interfaces.
.It Xr nge 4
National Semiconductor DP83820 and DP83821 based Gigabit Ethernet.
.It Xr rl 4
RealTek 8129/8139 Ethernet interfaces.
.It Xr sf 4
Adaptec AIC-6915 "Starfire" Ethernet interfaces.
.It Xr sis 4
SiS 900, SiS 7016, and NS DP83815 Ethernet interfaces.
.It Xr sk 4
SysKonnect SK-984x Gigabit Ethernet interfaces.
.It Xr ste 4
Sundance Technologies ST201 Ethernet interfaces.
.It Xr ti 4
Alteon Networks Tigon I and Tigon II Gigabit Ethernet interfaces.
.It Xr tl 4
Texas Instruments ThunderLAN-based Ethernet interfaces.
.It Xr tx 4
SMC 9432 10/100 Mbps Ethernet interfaces.
.It Xr txp 4
3Com 3XP Typhoon/Sidewinder (3C990) 10/100 Mbps Ethernet interfaces.
.It Xr vr 4
VIA Technologies VT3043 and VT86C100A Ethernet interfaces.
.It Xr wb 4
Winbond W89C840F Ethernet interfaces.
.It Xr wx 4
Intel Gigabit Ethernet interfaces.
.It Xr xl 4
3Com 3c555, 3c556, 3c900, 3c905, 3c980, and 3cSOHO Ethernet interfaces.
.El
.Ss Cryptography accelerators
.Bl -tag -width 10n -offset ind
.It Xr hifn 4
Hi/fn 7751
Symmetric Encryption Accelerator.
.It Xr ubsec 4
Broadcom Bluesteelnet uBsec 5501, 5601, 5805, and 5820.
.It Xr ises 4
Pijnenburg PCC-ISES hardware crypto accelerator.
.El
.Ss Serial interfaces
.Bl -tag -width 10n -offset ind
.It Xr cy 4
Cyclades Cyclom-4Y, -8Y, and -16Y asynchronous serial communications devices.
.El
.Ss Display adapters
.Bl -tag -width 10n -offset ind
.It Xr vga 4
VGA graphics cards.
.El
.Ss Audio devices
.Bl -tag -width 10n -offset ind
.It Xr eap 4
Ensoniq AudioPCI sound devices.
.It Xr eso 4
ESS Solo-1 PCI AudioDrive sound devices.
.It Xr maestro 4
ESS Maestro 1, 2 and 2E sound devices.
.It Xr sv 4
S3 SonicVibes sound devices.
.It Xr neo 4
NeoMagic 256AV/ZX sound devices.
.It Xr fms 4
Forte Media FM801 sound devices.
.It Xr auvia 4
Integrated AC97 audio controller of the VIA Technologies
VT82C686A Southbridge.
.It Xr cmpci 4
C-Media CMI8x38 sound devices.
.It Xr auich 4
Intel 82801AA/AB and 440MX sound devices.
.It Xr clcs 4
Cirrus Logic CrystalClear CS4280 sound devices.
.It Xr clct 4
Cirrus Logic CrystalClear CS4281 sound devices.
.It Xr yds 4
Yamaha DS-XG sound devices.
.El
.Ss Miscellaneous devices
.Bl -tag -width 10n -offset ind
.It Xr bktr 4
Brooktree Bt848
.Tn PCI
video capture boards.
.It Xr cbb 4
.Tn PCI
Yenta compatible
.Tn CardBus
bridges.
.It Xr ohci 4
USB OHCI host controller.
.It Xr pcic 4
.Tn PCI
.Tn PCMCIA
controllers, including the Cirrus Logic GD6729.
.It Xr ppb 4
Generic
.Tn PCI Ns \- Ns Tn PCI
bridges, including
.Tn PCI
expansion backplanes.
.It Xr puc 4
PCI
.Dq universal
communications cards, containing
.Xr com 4
and
.Xr lpt 4
communications ports.
.It Xr uhci 4
USB UHCI host controller.
.It Xr wdt 4
ICS PCI-WDT500/501 watchdog timer devices.
.El
.Sh IOCTLS
If the kernel is compiled with the
.Cd option USER_PCICONF
kernel option, the following
.Xr ioctl 2
calls are supported by the
.Nm
driver.  They are defined in the header file
.Aq Pa sys/pciio.h .
.Bl -tag -width 012345678901234
.Pp
.It PCIOCREAD
This
.Xr ioctl 2
reads the
.Tn PCI
configuration registers specified by the passed-in
.Va pci_io
structure.  The
.Va pci_io
structure consists of the following fields:
.Bl -tag -width pi_width
.It pi_sel
A
.Va pcisel
structure which specifies the bus, slot and function the user would like to
query.
.It pi_reg
The
.Tn PCI
configuration register the user would like to access.
.It pi_width
The width, in bytes, of the data the user would like to read.  This value
may be either 1, 2, or 4.  3-byte reads and reads larger than 4 bytes are
not supported.
.It pi_data
The data returned by the kernel.
.El
.It PCIOCWRITE
This
.Xr ioctl 2
allows users to write to the
.Tn PCI
specified in the passed-in
.Va pci_io
structure.  The
.Va pci_io
structure is described above.  The limitations on data width described for
reading registers, above, also apply to writing
.Tn PCI
configuration registers.
.El
.Sh FILES
.Bl -tag -width /dev/pci -compact
.It Pa /dev/pci
Character device for the
.Nm
driver.
.El
.Sh SEE ALSO
.Xr cardbus 4 ,
.Xr intro 4 ,
.Xr isa 4 ,
.Xr isapnp 4 ,
.Xr options 4 ,
.Xr pchb 4 ,
.Xr pcmcia 4 ,
.Xr usb 4
.Sh HISTORY
The machine-independent
.Tn PCI
subsystem appeared in
.Ox 2.0 .
Support for device listing and matching was re-implemented by
Kenneth Merry, and first appeared in
.Fx 3.0 .