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x86, pci: introduce pci=noioapicquirk kernel cmdline option

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Introduce pci=noioapicquirk kernel cmdline option to disable all boot
interrupt quirks

Signed-off-by: Stefan Assmann <sassmann@suse.de>
Signed-off-by: Olaf Dabrunz <od@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Stefan Assmann 2008-06-11 16:35:14 +02:00 committed by Ingo Molnar
parent 747ada36ee
commit a9322f6488
4 changed files with 12 additions and 0 deletions
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3
Documentation/kernel-parameters.txt
View file

@ -1518,6 +1518,9 @@ and is between 256 and 4096 characters. It is defined in the file
nomsi [MSI] If the PCI_MSI kernel config parameter is
enabled, this kernel boot option can be used to
disable the use of MSI interrupts system-wide.
noioapicquirk [APIC] Disable all boot interrupt quirks.
Safety option to keep boot IRQs enabled. This
should never be necessary.
biosirq [X86-32] Use PCI BIOS calls to get the interrupt
routing table. These calls are known to be buggy
on several machines and they hang the machine

4
arch/x86/pci/common.c
View file

@ -22,6 +22,7 @@ unsigned int pci_probe = PCI_PROBE_BIOS | PCI_PROBE_CONF1 | PCI_PROBE_CONF2 |
static int pci_bf_sort;
int pci_routeirq;
int noioapicquirk;
int pcibios_last_bus = -1;
unsigned long pirq_table_addr;
struct pci_bus *pci_root_bus;
@ -495,6 +496,9 @@ char * __devinit pcibios_setup(char *str)
} else if (!strcmp(str, "skip_isa_align")) {
pci_probe |= PCI_CAN_SKIP_ISA_ALIGN;
return NULL;
} else if (!strcmp(str, "noioapicquirk")) {
noioapicquirk = 1;
return NULL;
}
return str;
}

4
include/asm-x86/io_apic.h
View file

@ -157,11 +157,15 @@ extern int sis_apic_bug;
/* 1 if "noapic" boot option passed */
extern int skip_ioapic_setup;
/* 1 if "noapic" boot option passed */
extern int noioapicquirk;
/* 1 if the timer IRQ uses the '8259A Virtual Wire' mode */
extern int timer_through_8259;
static inline void disable_ioapic_setup(void)
{
noioapicquirk = 1;
skip_ioapic_setup = 1;
}

1
include/asm-x86/pci.h
View file

@ -19,6 +19,7 @@ struct pci_sysdata {
};
extern int pci_routeirq;
extern int noioapicquirk;
/* scan a bus after allocating a pci_sysdata for it */
extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops,