CARDBUS(4) NetBSD Kernel Interfaces Manual CARDBUS(4)
NAME
cardbus, cardslot, cbb -- CardBus driver
SYNOPSIS
cbb* at pci? dev? function ? cardslot* at cbb? cardbus* at cardslot? pcmcia* at cardslot? XX* at cardbus? function ?
DESCRIPTION
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.
SUPPORTED DEVICES
NetBSD includes the following machine-independent CardBus drivers, sorted by function and driver name: Network interfaces 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 Serial interfaces com Modems and serial cards SCSI controllers adv AdvanSys 1200[A,B], 9xx[U,UA] ahc Adaptec ADP-1480 njs Workbit NinjaSCSI-32 USB controllers ehci Enhanced Host Controller (2.0) ohci Open Host Controller uhci Universal Host Controller IEEE1394 controllers fwohci OHCI controller SD/MMC/SDIO controllers sdhc SD Host Controller Disk and tape controllers njata Workbit NinjaATA-32 siisata Silicon Image SATA-II controllers
DIAGNOSTICS
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.
SEE ALSO
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)
HISTORY
The cardbus driver appeared in NetBSD 1.5.
BUGS
Memory space conflicts 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 map- ping 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 Com- paq ARMADA M700: options RBUS_MIN_START="0x20000000" PCMCIA addressing choice 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 require- ment 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" NetBSD 8.3 December 31, 2014 NetBSD 8.3
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