cardbus
, cardslot
,
cbb
—
CardBus driver
cbb* at pci? dev? function ?
cardslot* at cbb?
cardbus* at cardslot?
pcmcia* at cardslot?
XX* at cardbus? function ?
NetBSD provides machine-independent bus support and
drivers for CardBus devices.
The cbb
device represents the CardBus
controller. Each controller has a number of slots, represented by the
cardslot
devices. A slot can have either a CardBus
card or a PCMCIA card, which are attached with the
cardbus
or pcmcia
devices,
respectively.
NetBSD includes the following machine-independent
CardBus drivers, sorted by function and driver name:
- ath
- Atheros 5210/5211/5212 802.11
- atw
- ADMtek ADM8211 (802.11)
- bwi
- Broadcom BCM430x/4318 (802.11)
- ex
- 3Com 3c575TX and 3c575BTX
- fxp
- Intel i8255x
- ral
- Ralink Technology RT25x0 (802.11)
- re
- RealTek 8139C+/8169/8169S/8110S
- rtk
- Realtek 8129/8139
- rtw
- Realtek 8180L (802.11)
- tlp
- DECchip 21143
- com
- Modems and serial cards
- adv
- AdvanSys 1200[A,B], 9xx[U,UA]
- ahc
- Adaptec ADP-1480
- njs
- Workbit NinjaSCSI-32
- ehci
- Enhanced Host Controller (2.0)
- ohci
- Open Host Controller
- uhci
- Universal Host Controller
- njata
- Workbit NinjaATA-32
- siisata
- Silicon Image SATA-II controllers
cbb
devices may not be properly handled by the system
BIOS on i386-family systems. If, on an i386-family system, the
cbb
driver reports
cbb0: NOT USED because of
unconfigured interrupt
then enabling
options PCI_ADDR_FIXUP
options PCI_BUS_FIXUP
options PCI_INTR_FIXUP
or (if ACPI is in use)
options PCI_INTR_FIXUP_DISABLED
in the kernel configuration might be of use.
adv(4),
ahc(4),
ath(4),
atw(4),
bwi(4),
com(4),
ehci(4),
ex(4),
fwohci(4),
fxp(4),
njata(4),
njs(4),
ohci(4),
options(4),
pci(4),
pcmcia(4),
ral(4),
re(4),
rtk(4),
rtw(4),
sdhc(4),
siisata(4),
tlp(4),
uhci(4)
The cardbus
driver appeared in NetBSD
1.5.
NetBSD maps memory on Cardbus (and therefore PCMCIA
cards behind Cardbus) in order to access the cards (including reading CIS
tuples on PCMCIA cards) and access the devices using the RBUS abstraction.
When the mapping does not work, PCMCIA cards are typically ignored on insert,
and Cardbus cards are recognized but nonfunctional. On i386, the kernel has a
heuristic to choose a memory address for mapping, defaulting to 1 GB, but
choosing 0.5 GB on machines with less than 192 MB RAM and 2 GB on machines
with more than 1 GB of RAM. The intent is to use an address that is larger
than available RAM, but low enough to work; some systems seem to have trouble
with addresses requiring more than 20 address lines. On i386, the following
kernel configuration line disables the heuristics and forces Cardbus memory
space to be mapped at 512M; this value makes Cardbus support (including PCMCIA
attachment under a cbb) work on some notebook models, including the IBM
Thinkpad 600E (2645-4AU) and the Compaq ARMADA M700:
options
RBUS_MIN_START="0x20000000"
By default, on i386 and amd64, the kernel uses
RBUS_IO_BASE
as 0x4000 and
RBUS_IO_SIZE
as 0x2000. On some machines, this fails,
due to a requirement that these addresses fit within 12 bits. The following
kernel options have been reported as helpful:
options RBUS_IO_BASE="0xa00"
options
RBUS_IO_SIZE="0x00ff"