Uniden Data 2000 Wireless CDPD PC Card Betriebsanweisung PDF herunterladen (Seite 21)

In some cases, the default high memory window is not usable. On some IBM Thinkpad models, a window of

0x60000000−0x60ffffff will work in place of the default window.

3.6 Failure to detect card insertions and removals

Symptoms:

• Cards are detected and configured properly if present at boot time.

• The drivers do not respond to insertion and removal events, either by recording events in the system

log, or by beeping.

In most cases, the socket driver (i82365 or tcic) will automatically probe and select an appropriate

interrupt to signal card status changes. The automatic interrupt probe doesn't work on some Intel−compatible

controllers, including Cirrus chips and the chips used in some IBM ThinkPads. If a device is inactive at probe

time, its interrupt may also appear to be available. In these cases, the socket driver may pick an interrupt that

is used by another device.

With the i82365 and tcic drivers, the irq_list option can be used to limit the interrupts that will be

tested. This list limits the set of interrupts that can be used by PCMCIA cards as well as for monitoring card

status changes. The cs_irq option can also be used to explicitly set the interrupt to be used for monitoring

card status changes.

If you can't find an interrupt number that works, there is also a polled status mode: both i82365 and

tcic will accept a poll_interval=100 option, to poll for card status changes once per second. This

option should also be used if your system has a shortage of interrupts available for use by PCMCIA cards.

Especially for systems with more than one host controller, there is little point in dedicating interrupts for

monitoring card status changes.

All these options should be set in the PCIC_OPTS= line in either /etc/rc.d/rc.pcmcia or

/etc/sysconfig/pcmcia, depending on your site setup.

3.7 System resource starvation

Symptoms:

• When a card is inserted, it is identified correctly but cannot be configured (high/low beep pattern).

• One of the following messages will appear in the system log:

RequestIO: Resource in use

RequestIRQ: Resource in use

RequestWindow: Resource in use

GetNextTuple: No more items

could not allocate nn IO ports for CardBus socket n

could not allocate nnK memory for CardBus socket n

could not allocate interrupt for CardBus socket n

Linux PCMCIA HOWTO

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Uniden Data 2000 Wireless CDPD PC Card Betriebsanweisung Seite 21