Bug 1391 - ACPI does not distribute PIC PIRQs
Summary: ACPI does not distribute PIC PIRQs
Status: CLOSED CODE_FIX
Alias: None
Product: ACPI
Classification: Unclassified
Component: Config-Interrupts (show other bugs)
Hardware: i386 Linux
: P2 normal
Assignee: Len Brown
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2003-10-20 13:30 UTC by Len Brown
Modified: 2004-03-04 12:25 UTC (History)
1 user (show)

See Also:
Kernel Version: 2.6.0-test8
Subsystem:
Regression: ---
Bisected commit-id:

Attachments
lspci -vv (11.11 KB, text/plain)
2003-10-20 13:41 UTC, Len Brown 		Details
acpidmp output (127.79 KB, text/plain)
2003-10-20 13:41 UTC, Len Brown 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Len Brown 2003-10-20 13:30:54 UTC 
Distribution:
Hardware Environment:
Software Environment:
Problem Description:

Steps to reproduce:
Comment 1 Len Brown 2003-10-20 13:40:28 UTC 
2.6.0-test8 on a Toshiba Satellite Pro M15 leaves all the PCI devices on IRQ11 
although the AML says that IRQs 3, 4, 5, 7 and 7 are also available: 
 
  0:      97680          XT-PIC  timer 
  1:         10          XT-PIC  i8042 
  2:          0          XT-PIC  cascade 
  4:        406          XT-PIC  serial 
  9:         15          XT-PIC  acpi 
 11:        612          XT-PIC  ohci1394, yenta, yenta, ehci_hcd, uhci_hcd, uhci_hcd, uhci_hcd, eth0 
 12:         50          XT-PIC  i8042 
 14:       4117          XT-PIC  ide0 
 15:         17          XT-PIC  ide1 
NMI:          0 
LOC:      97525 
ERR:          1 
MIS:          0 
 
ACPI: Interpreter enabled 
ACPI: Using PIC for interrupt routing 
ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 *11) 
ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 *11) 
ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 *11) 
ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 *11) 
ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 *11) 
ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 *11) 
ACPI: PCI Interrupt Link [LNKG] (IRQs *10) 
ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 *11) 
ACPI: PCI Root Bridge [PCI0] (00:00) 
... 
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT] 
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCIB._PRT] 
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCI1._PRT] 
... 
Linux Kernel Card Services 
  options:  [pci] [cardbus] [pm] 
drivers/usb/core/usb.c: registered new driver usbfs 
drivers/usb/core/usb.c: registered new driver hub 
ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 11 
ACPI: PCI Interrupt Link [LNKD] enabled at IRQ 11 
ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 11 
ACPI: PCI Interrupt Link [LNKH] enabled at IRQ 11 
ACPI: PCI Interrupt Link [LNKB] enabled at IRQ 11 
ACPI: PCI Interrupt Link [LNKG] enabled at IRQ 10 
ACPI: PCI Interrupt Link [LNKF] enabled at IRQ 11 
ACPI: PCI Interrupt Link [LNKE] enabled at IRQ 11
Comment 2 Len Brown 2003-10-20 13:41:18 UTC 
Created attachment 1117 [details]
lspci -vv
Comment 3 Len Brown 2003-10-20 13:41:49 UTC 
Created attachment 1118 [details]
acpidmp output
Comment 4 Shaohua 2003-10-20 17:17:37 UTC 
As I know, a patch from Andrew de Quincey didn't change link device's irq if 
it has an active irq. so I think the output you attached is correct.
Comment 5 Len Brown 2003-11-30 21:22:28 UTC 
fixed and shipped in 2.4.23: 
        acpi_irq_balance        ACPI will balance active IRQs 
        acpi_irq_nobalance      ACPI will not move active IRQs 
        acpi_irq_pci=   If irq_balance, Clear listed IRQs for use by PCI 
        acpi_irq_isa=   If irq_balance, Mark listed IRQs used by ISA 
 
balance is default for IOAPIC mode, nobalance is default for PIC mode.
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