No interrupts for PCMCIA cards

No interrupts for PCMCIA cards

[Marcel Holtmann]

Hi guys,

while trying to fix a problem with a Bluetooth PCMCIA card I faced the
problem that my Cardbus controller don't give out any interrupts. I
tried it with 2.6.5 and this is my PCMCIA bridge:

0000:02:0e.0 CardBus bridge: Texas Instruments PCI1410 PC card Cardbus Controller (rev 01)
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 168, Cache Line Size: 0x20 (128 bytes)
        Interrupt: pin A routed to IRQ 18
        Region 0: Memory at 20000000 (32-bit, non-prefetchable)
        Bus: primary=02, secondary=04, subordinate=07, sec-latency=176
        Memory window 0: 20400000-207ff000 (prefetchable)
        Memory window 1: 20800000-20bff000
        I/O window 0: 00004000-000040ff
        I/O window 1: 00004400-000044ff
        BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset+ 16bInt+ PostWrite+
        16-bit legacy interface ports at 0001

And this is how /proc/interrupts look like:

           CPU0       
  0:    7241752    IO-APIC-edge  timer
  1:      10923    IO-APIC-edge  i8042
  2:          0          XT-PIC  cascade
  8:          4    IO-APIC-edge  rtc
 12:         94    IO-APIC-edge  i8042
 14:     134100    IO-APIC-edge  ide0
 15:          1    IO-APIC-edge  ide1
 18:          0   IO-APIC-level  yenta
 19:     120010   IO-APIC-level  uhci_hcd
 20:          0   IO-APIC-level  ohci_hcd
 21:     231886   IO-APIC-level  ohci1394, ohci_hcd, eth0
 22:        297   IO-APIC-level  acpi, ehci_hcd
 23:         57   IO-APIC-level  aic7xxx, uhci_hcd
NMI:          0 
LOC:    7241898 
ERR:          0
MIS:          0

The count for interrupt 18 is still zero every time, but on my Sony C1VE
laptop the PCMCIA cards get their interrupts.

Regards

Marcel

Re: No interrupts for PCMCIA cards

[Daniel Ritz]

you can try my TI interrupt routing patch:
	http://ritz.dnsalias.org/linux/pcmcia-ti-routing-9.patch
also included in	2.6.5-rc3-mm1 and higher:
	http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.5-rc3/2.6.5-rc3-mm4/broken-out/yenta-TI-irq-routing-fix.patch

also the dmesg output with my patch applied would be nice to see...

rgds
-daniel

Re: No interrupts for PCMCIA cards

[Marcel Holtmann]

Hi Daniel,

> you can try my TI interrupt routing patch:
> 	http://ritz.dnsalias.org/linux/pcmcia-ti-routing-9.patch
> also included in	2.6.5-rc3-mm1 and higher:
> 	http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.5-rc3/2.6.5-rc3-mm4/broken-out/yenta-TI-irq-routing-fix.patch
> 
> also the dmesg output with my patch applied would be nice to see...

thanks for the fast reply. This patch brings everything back in shape
and here is the Yenta part from dmesg:

Linux Kernel Card Services
  options:  [pci] [cardbus] [pm]
PCI: Enabling device 0000:02:0e.0 (0000 -> 0002)
Yenta: CardBus bridge found at 0000:02:0e.0 [0000:0000]
Yenta: Enabling burst memory read transactions
Yenta: Using CSCINT to route CSC interrupts to PCI
Yenta: Routing CardBus interrupts to PCI
Yenta TI: socket 0000:02:0e.0, mfunc 0x00000000, devctl 0x66
Yenta TI: socket 0000:02:0e.0 probing PCI interrupt failed, trying to fix
Yenta TI: socket 0000:02:0e.0 falling back to parallel PCI interrupts
Yenta TI: socket 0000:02:0e.0 parallel PCI interrupts ok
Yenta: ISA IRQ mask 0x0000, PCI irq 18
Socket status: 30000047
NET: Registered protocol family 23
cs: IO port probe 0x0c00-0x0cff: clean.
cs: IO port probe 0x0800-0x08ff: clean.
cs: IO port probe 0x0100-0x04ff: excluding 0x378-0x37f 0x3c0-0x3df 0x4d0-0x4d7
cs: IO port probe 0x0a00-0x0aff: clean.

Regards

Marcel