PCI(4) | Device Drivers Manual | PCI(4)

# NAME

`pci` — introduction to machine-independent PCI bus support and drivers

# SYNOPSIS

`pci* at mainbus? bus ?`
`pci* at pchb? bus ?`
`pci* at ppb? bus ?`

`options PCIVERBOSE`
`options PCI_CONFIG_DUMP`
`options PCI_ADDR_FIXUP`
`options PCI_BUS_FIXUP`
`options PCI_INTR_FIXUP`

# DESCRIPTION

NetBSD includes a machine-independent PCI bus subsystem and several machine-independent PCI device drivers.

Your system may support additional PCI devices and attachments. Drivers for PCI devices not listed here are machine-dependent. Consult your system's intro(4) for additional information.

# OPTIONS

`PCI_ADDR_FIXUP`
  Fixup PCI I/O and memory addresses.

  Some i386 and amd64 BIOS implementations don't allocate I/O space and memory space for some PCI devices — primarily BIOS in PnP mode, or laptops that expect devices to be configured via ACPI. Since necessary space isn't allocated, those devices will not work without special handling.

  This option allocates I/O space and memory space instead of relying upon the BIOS to do so.

  If necessary space is already correctly assigned to the devices, this option leaves the space as is.

`PCI_BUS_FIXUP`
  Fixup PCI bus numbering; needed for many cardbus(4) bridges.

  Each PCI bus and CardBus should have a unique bus number. But some BIOS implementations don't assign a bus number for subordinate PCI buses. And many BIOS implementations don't assign a bus number for CardBuses.

  A typical symptom of this is the following boot message:

  cardbus0 at cardslot0: bus 0 device 0...
  Please note that this cardbus0 has a bus number ‘0’, but normally the bus number 0 is used by the machine's primary PCI bus. Thus, this bus number for cardbus is incorrect (not assigned). In this situation, a device located in cardbus0 doesn't show correct device ID, because its bus number 0 incorrectly refers to the primary PCI bus, and a device ID in the primary PCI bus is shown in the boot message instead of the device's ID in the cardbus0.

  This option assigns bus numbers for all subordinate PCI buses and CardBuses.

  Since this option renumbers all PCI buses and CardBuses, all bus numbers of subordinate buses become different when this option is enabled.

`PCI_INTR_FIXUP`
  Fixup PCI interrupt routing via PCIBIOS or ACPI.

  Some i386 and amd64 BIOS implementations don't assign an interrupt for some devices.

  This option assigns an interrupt for such devices instead of relying upon the BIOS to do so.

  If a valid interrupt has already been assigned to a device, this option leaves the interrupt as is.

# HARDWARE

NetBSD includes machine-independent PCI drivers, sorted by device type and driver name:

## SCSI interfaces

ahc(4)
  Adaptec 29xx, 39xx, and other AIC-7xxx-based SCSI interfaces.
adv(4)
  Advansys SCSI interfaces.
adw(4)
  Advansys Ultra Wide SCSI interfaces.
bha(4)
  Buslogic BT-9xx SCSI interfaces.
dpt(4)
  DPT SmartCache/SmartRAID III and IV SCSI interfaces.
esiop(4)
  Enhanced Symbios Logic/NCR 53c8xx SCSI controllers.
iha(4)
  Initio INIC-940/950 SCSI interfaces.
isp(4)
  QLogic ISP-1020, ISP-1040, and ISP-2100 SCSI and FibreChannel interfaces.
mfi(4)
  LSI Logic & Dell MegaRAID SAS RAID controllers.
mly(4)
  Mylex AcceleRAID and eXtremeRAID controllers with v6 firmware.
mpii(4)
  LSI Logic Fusion-MPT Message Passing Interface II SAS controllers.
mpt(4)
  LSI Logic Fusion-MPT SCSI/Fibre Channel/SAS controllers.
nca(4)
  Domex 536 SCSI interfaces.
njs(4)
  Workbit NinjaSCSI-32 PCI/CardBus SCSI controllers.
pcscp(4)
  Advanced Micro Devices Am53c974 PCscsi-PCI SCSI interfaces.
siop(4)
  Symbios Logic/NCR 53c8xx-family SCSI interfaces.
trm(4)
  Tekram TRM-S1040 ASIC based SCSI interfaces.

## Storage controllers

aac(4)
  The Adaptec AAC family of RAID controllers.
acardide(4)
  Acard IDE disk controllers.
aceride(4)
  Acer Labs M5229 IDE controllers.
ahcisata(4)
  AHCI 1.0 and 1.1 compliant SATA controllers.
amr(4)
  The AMI and LSI Logic MegaRAID family of RAID controllers.
arcmsr(4)
  Areca Technology Corporation SATA/SAS RAID controllers.
artsata(4)
  Intel i31244 Serial ATA disk controllers.
cac(4)
  Compaq array controllers.
ciss(4)
  HP/Compaq Smart ARRAY 5/6 RAID controllers.
cmdide(4)
  CMD Technology and Silicon Image IDE disk controllers.
cypide(4)
  Cypress 82C693 IDE controllers.
hptide(4)
  Triones/Highpoint IDE disk controllers.
icp(4)
  ICP Vortex GDT and Intel Storage RAID controllers.
iteide(4)
  Integrated Technology Express IDE disk controllers.
ixpide(4)
  ATI Technologies IXP IDE controllers.
jmide(4)
  JMicron Technology JMB36x PCIe to SATA II/PATA controllers.
mlx(4)
  Mylex DAC960 and DEC SWXCR RAID controllers.
mvsata(4)
  Marvell Hercules-I and Hercules-II SATA controllers.
nside(4)
  National Semiconductor PC87415 PCI-IDE controllers.
nvme(4)
  Non-Volatile Memory (NVM Express) host controllers.
optiide(4)
  OPTi IDE disk controllers.
pdcide(4)
  Promise IDE disk controllers.
pdcsata(4)
  Promise Serial-ATA disk controllers.
pciide(4)
  IDE disk controllers.
rtsx(4)
  Realtek SD card readers.
satalink(4)
  Silicon Image SATALink disk controllers.
schide(4)
  Intel SCH IDE disk controllers.
siisata(4)
  Silicon Image SATA-II controllers.
siside(4)
  Silicon Integrated System IDE disk controllers.
slide(4)
  Symphony Labs and Winbond IDE disk controllers.
stpcide(4)
  STMicroelectronics STPC IDE disk controllers
svwsata(4)
  Serverworks Serial ATA disk controllers.
twa(4)
  3ware Apache RAID controllers.
twe(4)
  3Ware Escalade RAID controllers.
viaide(4)
  AMD, NVIDIA and VIA IDE disk controllers.

## Wired network interfaces

age(4)
  Attansic L1 10/100/Gigabit Ethernet interfaces.
alc(4)
  Atheros AR813x/AR815x/AR816x/AR817x and Killer E2200/2400/2500 10/100/1000 Ethernet interfaces.
ale(4)
  Atheros AR8121/AR8113/AR8114 (Attansic L1E) 10/100/1000 Ethernet interfaces.
aq(4)
  Aquantia AQC multigigabit Ethernet interfaces.
bce(4)
  Broadcom BCM4401 10/100 Ethernet interfaces.
bge(4)
  Broadcom BCM57xx/BCM590x 10/100/1000 Ethernet interfaces.
bnx(4)
  Broadcom NetXtreme II 10/100/1000 Ethernet interfaces.
cas(4)
  Sun Cassini/Cassini+ (GigaSwift) Ethernet devices.
dge(4)
  Intel i82597EX PRO/10GbE LR Ethernet interfaces.
ena(4)
  Elastic Network Adapter interfaces.
ep(4)
  3Com 3c590, 3c595, 3c900, and 3c905 Ethernet interfaces.
epic(4)
  SMC83C170 (EPIC/100) Ethernet interfaces.
eqos(4)
  DesignWare Ethernet Quality-of-Service controllers.
et(4)
  Agere/LSI ET1310/ET1301 10/100/1000 Ethernet interfaces.
ex(4)
  3Com 3c900, 3c905, and 3c980 Ethernet interfaces.
fxp(4)
  Intel EtherExpress PRO 10+/100B Ethernet interfaces.
gsip(4)
  National Semiconductor DP83820 based Gigabit Ethernet interfaces.
hme(4)
  Sun Microelectronics STP2002-STQ Ethernet interfaces.
igc(4)
  Intel I225/I226 1Gb/2.5Gb Ethernet devices.
ixg(4)
  Intel 82598EB, 82599, X540 and X550 10 Gigabit Ethernet interfaces.
ixl(4)
  Intel 700 series Ethernet interfaces.
jme(4)
  JMicron Technologies JMC250/JMC260 Ethernet interfaces.
kse(4)
  Micrel 8842/8841 PCI Ethernet controllers.
le(4)
  PCNet-PCI Ethernet interfaces. Note, the pcn(4) driver supersedes this driver.
lii(4)
  Attansic/Atheros L2 Fast-Ethernet interfaces.
mcx(4)
  Mellanox 5th generation Ethernet devices.
msk(4)
  Marvell Yukon 2 based Gigabit Ethernet interfaces.
ne(4)
  NE2000-compatible Ethernet interfaces.
nfe(4)
  NVIDIA nForce Ethernet interfaces.
ntwoc(4)
  SDL Communications N2pci and WAN/ic 400 synchronous serial interfaces.
pcn(4)
  AMD PCnet-PCI family of Ethernet interfaces.
re(4)
  Realtek 10/100/1000 Ethernet adapters.
rge(4)
  Realtek RTL8125-based Ethernet interfaces.
rtk(4)
  Realtek 8129/8139 based Ethernet interfaces.
sf(4)
  Adaptec AIC-6915 10/100 Ethernet interfaces.
sip(4)
  Silicon Integrated Systems SiS 900, SiS 7016, and National Semiconductor DP83815 based Ethernet interfaces.
sk(4)
  SysKonnect SK-98xx based Gigabit Ethernet interfaces.
ste(4)
  Sundance ST-201 10/100 based Ethernet interfaces.
stge(4)
  Sundance/Tamarack TC9021 based Gigabit Ethernet interfaces.
ti(4)
  Alteon Networks Tigon I and Tigon II Gigabit Ethernet driver.
tl(4)
  Texas Instruments ThunderLAN-based Ethernet interfaces.
tlp(4)
  DECchip 21x4x and clone Ethernet interfaces.
txp(4)
  3Com 3XP Typhoon/Sidewinder (3CR990) Ethernet interfaces.
vge(4)
  VIA Networking Technologies VT6122 PCI Gigabit Ethernet adapter driver.
vmx(4)
  VMware VMXNET3 virtual Ethernet interfaces.
vr(4)
  VIA VT3043 (Rhine) and VT86C100A (Rhine-II) Ethernet interfaces.
vte(4)
  Vortex86 RDC R6040 Fast Ethernet driver.
wm(4)
  Intel i8254x Gigabit Ethernet driver.
xge(4)
  Neterion Xframe-I LR Ethernet adapters.

## Wireless network interfaces

an(4)
  Aironet 4500/4800 and Cisco 340 series 802.11 interfaces.
atw(4)
  ADMtek ADM8211 IEEE 802.11b PCI/CardBus wireless network interfaces.
ath(4)
  Atheros IEEE 802.11a/b/g wireless network interfaces.
athn(4)
  Atheros IEEE 802.11a/b/g/n wireless network interfaces.
bwi(4)
  Broadcom BCM430x/4318 IEEE 802.11b/g wireless network interfaces.
bwfm(4)
  Broadcom and Cypress FullMAC wireless network interfaces.
ipw(4)
  Intel PRO/Wireless 2100 MiniPCI network interfaces.
iwi(4)
  Intel PRO/Wireless 2200BG and 2915ABG MiniPCI network interfaces.
iwm(4)
  Intel Dual Band Wireless AC PCIe Mini Card network interfaces.
iwn(4)
  Intel Wireless WiFi Link 4965/5000/1000 and Centrino Wireless-N 1000/2000/6000 PCIe Mini network interfaces.
malo(4)
  Marvell Libertas 88W8335/88W8310/88W8385 802.11b/g wireless network interfaces.
ral(4)
  Ralink Technology RT2500/RT2600-based 802.11a/b/g wireless network interfaces.
rtw(4)
  Realtek RTL8180L 802.11b wireless network interfaces.
rtwn(4)
  Realtek RTL8188CE/RTL8192CE 802.11b/g/n wireless network interfaces.
wi(4)
  WaveLAN/IEEE and PRISM-II 802.11 wireless interfaces.
wpi(4)
  Intel PRO/Wireless 3945ABG Mini PCI Express network adapters.

## Cellular WAN interfaces

wwanc(4)
  Intel XMM 7360 LTE modem.

## Serial interfaces

cy(4)
  Cyclades Cyclom-4Y, -8Y, and -16Y multi-port serial interfaces.
cz(4)
  Cyclades-Z series multi-port serial interfaces.
pcweasel(4)
  PC-Weasel serial console board.

## Audio devices

auacer(4)
  Acer Labs M5455 I/O Controller Hub integrated AC'97 audio device.
auich(4)
  Intel I/O Controller Hub integrated AC'97 audio device.
auixp(4)
  ATI IXP series integrated AC'97 audio device.
autri(4)
  Trident 4DWAVE-DX/NX, SiS 7018, ALi M5451 AC'97 audio device.
auvia(4)
  VIA VT82C686A integrated AC'97 audio device.
clcs(4)
  Cirrus Logic CS4280 audio device.
clct(4)
  Cirrus Logic CS4281 audio device.
cmpci(4)
  C-Media CMI8x38 audio device.
eap(4)
  Ensoniq AudioPCI audio device.
emuxki(4)
  Creative Labs SBLive! and PCI 512 audio device.
esa(4)
  ESS Technology Allegro-1 / Maestro-3 audio device.
esm(4)
  ESS Maestro-1/2/2e PCI AC'97 Audio Accelerator audio device.
eso(4)
  ESS Solo-1 PCI AudioDrive audio device.
fms(4)
  Forte Media FM801 audio device.
gcscaudio(4)
  AMD Geode CS5536 audio device.
hdaudio(4)
  High Definition Audio Specification 1.0 device.
neo(4)
  NeoMagic MagicMedia 256 audio device.
sv(4)
  S3 SonicVibes audio device.
yds(4)
  Yamaha YMF724/740/744/754-based audio device.

## Video framebuffer devices

chipsfb(4)
  Chips & Technologies 6555x based framebuffers
genfb(4)
  generic framebuffer console driver
igmafb(4)
  Intel Graphics Media Accelerator framebuffers
igsfb(4)
  IGA 1682 and CyberPro series graphics cards
machfb(4)
  ATI Mach64/RAGE framebuffer driver
pm3fb(4)
  3Dlabs Permedia 3 / Oxygen VX1 / Proformance 3 framebuffers
r128fb(4)
  ATI RAGE 128 framebuffer driver
radeonfb(4)
  ATI Radeon framebuffer driver
tdvfb(4)
  3Dfx Voodoo Graphics / Voodoo 2 framebuffers
veritefb(4)
  Rendition Verite V2100/V2200 framebuffer driver
voodoofb(4)
  3Dfx Voodoo 3 / Voodoo Banshee framebuffers
vga(4)
  VGA graphics boards.

## Cryptographic accelerators

hifn(4)
  Hifn 7751/7951/7811/7955/7956 crypto accelerators.
qat(4)
  Intel QuickAssist crypto accelerator.
ubsec(4)
  Broadcom and BlueSteel uBsec 5x0x crypto accelerator.

## USB host controllers

ehci(4)
  USB EHCI host controllers.
ohci(4)
  USB OHCI host controllers.
uhci(4)
  USB UHCI host controllers.
xhci(4)
  USB XHCI host controllers.

## Bridges

cbb(4)
  PCI Yenta compatible CardBus bridges.
pceb(4)
  Generic PCI-EISA bridges; see eisa(4).
pcib(4)
  Generic PCI-ISA bridges; see isa(4).
ppb(4)
  Generic PCI bridges, including expansion backplanes.

## Miscellaneous devices

coram(4)
  Conexant CX23885 based digital video cards.
cxdtv(4)
  Conexant CX2388x based digital video cards.
bktr(4)
  Brooktree 848 compatible TV cards.
gtp(4)
  Gemtek PCI FM radio devices.
ibmcd(4)
  IBM 4810 BSP cash drawer ports.
iop(4)
  I2O I/O processors.
oboe(4)
  Toshiba OBOE IrDA SIR/FIR controller.
pcic(4)
  PCMCIA controllers, including the Cirrus Logic GD6729.
puc(4)
  PCI “universal” communications cards, containing com(4) and lpt(4) communications ports.
virtio(4)
  Para-virtualized I/O in a virtual machine.

# SEE ALSO

pci(3), agp(4), intro(4), pcictl(8), pci(9)

# HISTORY

The machine-independent PCI subsystem appeared in NetBSD 1.2.

July 11, 2026 | NetBSD 11.99