diff options
| author | Andi Kleen <ak@suse.de> | 2006-09-26 10:52:29 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2006-09-26 10:52:29 +0200 |
| commit | 5cb6b99928a8f1a1bbdac7a16b88aef8cb64d432 (patch) | |
| tree | 1a5964a3e6cf530a52efc1ac2dc8932d72cd86c9 /arch | |
| parent | 2e91a17b35116885373e04af142b1d08cf1b47bf (diff) | |
[PATCH] Remove pirq overwrite support
This was an old workaround for broken MP-BIOS. The user could
specify overwrites on the command line.
I've never seen it being used for anything on 64bit. So get
rid of it for now.
Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86_64/kernel/io_apic.c | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c index 924a4a33295..86cc07caa0e 100644 --- a/arch/x86_64/kernel/io_apic.c +++ b/arch/x86_64/kernel/io_apic.c @@ -225,14 +225,6 @@ static void clear_IO_APIC (void) clear_IO_APIC_pin(apic, pin); } -/* - * support for broken MP BIOSs, enables hand-redirection of PIRQ0-7 to - * specific CPU-side IRQs. - */ - -#define MAX_PIRQS 8 -static int pirq_entries [MAX_PIRQS]; -static int pirqs_enabled; int skip_ioapic_setup; int ioapic_force; @@ -370,34 +362,6 @@ void __init check_ioapic(void) } } -static int __init ioapic_pirq_setup(char *str) -{ - int i, max; - int ints[MAX_PIRQS+1]; - - get_options(str, ARRAY_SIZE(ints), ints); - - for (i = 0; i < MAX_PIRQS; i++) - pirq_entries[i] = -1; - - pirqs_enabled = 1; - apic_printk(APIC_VERBOSE, "PIRQ redirection, working around broken MP-BIOS.\n"); - max = MAX_PIRQS; - if (ints[0] < MAX_PIRQS) - max = ints[0]; - - for (i = 0; i < max; i++) { - apic_printk(APIC_VERBOSE, "... PIRQ%d -> IRQ %d\n", i, ints[i+1]); - /* - * PIRQs are mapped upside down, usually. - */ - pirq_entries[MAX_PIRQS-i-1] = ints[i+1]; - } - return 1; -} - -__setup("pirq=", ioapic_pirq_setup); - /* * Find the IRQ entry number of a certain pin. */ @@ -793,22 +757,6 @@ static int pin_2_irq(int idx, int apic, int pin) } } BUG_ON(irq >= NR_IRQS); - - /* - * PCI IRQ command line redirection. Yes, limits are hardcoded. - */ - if ((pin >= 16) && (pin <= 23)) { - if (pirq_entries[pin-16] != -1) { - if (!pirq_entries[pin-16]) { - apic_printk(APIC_VERBOSE, "disabling PIRQ%d\n", pin-16); - } else { - irq = pirq_entries[pin-16]; - apic_printk(APIC_VERBOSE, "using PIRQ%d -> IRQ %d\n", - pin-16, irq); - } - } - } - BUG_ON(irq >= NR_IRQS); return irq; } @@ -1281,9 +1229,6 @@ static void __init enable_IO_APIC(void) irq_2_pin[i].pin = -1; irq_2_pin[i].next = 0; } - if (!pirqs_enabled) - for (i = 0; i < MAX_PIRQS; i++) - pirq_entries[i] = -1; /* * The number of IO-APIC IRQ registers (== #pins): |