change IRQ

English Hardware
1

Hello,

i use a open suse 10.2 with rtai 3.5 cv.

For a realtime application i need IRQ 11.

cat /proc/interrupts

  
           CPU0       
  0:     789679    XT-PIC-XT        timer, rtai_jif_chk
  1:        297    XT-PIC-XT        i8042
  2:          0    XT-PIC-XT        cascade
  5:          0    XT-PIC-XT        uhci_hcd:usb1, uhci_hcd:usb4
  6:          5    XT-PIC-XT        floppy
  7:          0    XT-PIC-XT        parport0
  8:          2    XT-PIC-XT        rtc
  9:       4686    XT-PIC-XT        acpi, ehci_hcd:usb5
 10:       1570    XT-PIC-XT        eth0
 11:      29317    XT-PIC-XT        libata, uhci_hcd:usb2, uhci_hcd:usb3, cp16xx
 12:      15129    XT-PIC-XT        i8042
 15:      28007    XT-PIC-XT        ide1
NMI:          0 
ERR:          0

and cat /proc/ioports

 
0000-001f : dma1
0020-0021 : pic1
0040-0043 : timer0
0050-0053 : timer1
0060-006f : keyboard
0070-0077 : rtc
0080-008f : dma page reg
00a0-00a1 : pic2
00c0-00df : dma2
00f0-00ff : fpu
0170-0177 : 0000:00:1f.1
  0170-0177 : ide1
01f0-01f7 : 0000:00:1f.1
02f8-02ff : serial
0376-0376 : 0000:00:1f.1
  0376-0376 : ide1
0378-037a : parport0
03c0-03df : vesafb
03f2-03f5 : floppy
03f6-03f6 : 0000:00:1f.1
03f7-03f7 : floppy DIR
03f8-03ff : serial
0400-047f : 0000:00:1f.0
  0400-0403 : ACPI PM1a_EVT_BLK
  0404-0405 : ACPI PM1a_CNT_BLK
  0408-040b : ACPI PM_TMR
  0428-042f : ACPI GPE0_BLK
  0460-046f : i8xx TCO
0480-04bf : 0000:00:1f.0
0500-051f : 0000:00:1f.3
  0500-051f : i801_smbus
0cf8-0cff : PCI conf1
a000-afff : PCI Bus #01
  a000-a0ff : 0000:01:09.0
  a400-a43f : 0000:01:0a.0
    a400-a43f : e1000
b000-b01f : 0000:00:1d.1
  b000-b01f : uhci_hcd
b400-b41f : 0000:00:1d.2
  b400-b41f : uhci_hcd
b800-b81f : 0000:00:1d.3
  b800-b81f : uhci_hcd
bc00-bc1f : 0000:00:1d.0
  bc00-bc1f : uhci_hcd
c000-c007 : 0000:00:1f.2
  c000-c007 : libata
c400-c403 : 0000:00:1f.2
  c400-c403 : libata
c800-c807 : 0000:00:1f.2
  c800-c807 : libata
cc00-cc03 : 0000:00:1f.2
  cc00-cc03 : libata
d000-d00f : 0000:00:1f.2
  d000-d00f : libata
f000-f00f : 0000:00:1f.1
  f000-f007 : ide0
  f008-f00f : ide1

There are libdata, uhci_hcd:usb2 and uhci_hcd:usb3 on IRQ 11. I want to change this. I want that only cp16xx uses IRQ 11. How can I realize?
I’ve a Phoenix-Award BIOS v6.00PG.

Thank you.
Tom

P.S. I’m not sure if this is the right forum. If not, a moderator can switch it in the right forum?

2

SUSE Linux Lifetime - openSUSE

3

Generally you have no say in IRQ assignment, they are assigned by the BIOS. To reduce the chance that IRQ lines get shared you need a mobo with more IRQ lines, around 200+, I forget the acronym now, Advanced something.