[asterisk-users] Issues with dahdi show status output (and check IRQs)

[Olivier]

Hi,

On a (bogus) system equiped with a Digium HA8 and 8 BRI ports, I'm reading this:
# asterisk -rx "dahdi show status"
Description                              Alarms  IRQ    bpviol CRC4
Fra Codi Options  LBO
HA8-0000                                 RED     109    0      0
CCS AMI  YEL      0 db (CSU)/0-133 feet (DSX-1)
HA8-0000                                 UNCONFI 109    0      0
CAS Unk  YEL      0 db (CSU)/0-133 feet (DSX-1)
HA8-0000                                 RED     109    0      0
CCS AMI  YEL      0 db (CSU)/0-133 feet (DSX-1)
HA8-0000                                 RED     109    0      0
CCS AMI  YEL      0 db (CSU)/0-133 feet (DSX-1)
HA8-0000                                 RED     109    0      0
CCS AMI  YEL      0 db (CSU)/0-133 feet (DSX-1)
HA8-0000                                 RED     109    0      0
CAS Unk  YEL      0 db (CSU)/0-133 feet (DSX-1)
HA8-0000                                 RED     109    0      0
CAS Unk  YEL      0 db (CSU)/0-133 feet (DSX-1)
HA8-0000                                 RED     109    0      0
CAS Unk  YEL      0 db (CSU)/0-133 feet (DSX-1)

(In this case, ports 2, 6, 7 and 8 are unconfigured).
When I'm reading this output, I often can see a different IRQ value.


On another (functional) system, with an HA8 and 4 BRI ports, I can
read an IRQ value which is constant.
But the displayed value is both different from the one I can read with
lpsci -v and lspci -bv.

1. Where does this IRQ value from "dahdi show status" come from ?
How can I check this value with linux tools such as lspci ?

2. Is it normal to see this IRQ changing from time to time ?

3. From "dmesg | grep IRQ" output:
[   13.565786] wctdm24xxp 0000:04:06.0: PCI INT A -> GSI 20 (level,
low) -> IRQ 20
[   13.565823] IRQ 20/wctdm24xxp0: IRQF_DISABLED is not guaranteed on
shared IRQs

What does the last line mean ?
I read it as implying my "Digium HA8 board is sharing the IRQ 20" but
cat /proc/interrupts and lspci -v do not confirm this.

Regards