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| author | Jiang Liu <jiang.liu@linux.intel.com> | 2014-06-09 12:20:04 +0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2014-06-22 01:05:44 +0400 |
| commit | 16ee7b3dcc56be14b9a813612cff2cc2339cdced (patch) | |
| tree | d9af7dfef67c95ade1dacc7dc1fc9f1dac3aa944 /arch/x86/kernel/acpi/boot.c | |
| parent | 9f354b0252b81c870ac7534d71906280cb573f86 (diff) | |
| download | linux-16ee7b3dcc56be14b9a813612cff2cc2339cdced.tar.xz | |
x86, irq: Simplify the way to handle ISA IRQ
On startup, setup_IO_APIC_irqs() will program all IOAPIC pins for ISA
IRQs. Later when mp_map_pin_to_irq() is called, it just returns ISA IRQ
number without programming corresponding IOAPIC pin.
This patch consolidates the way to program IOAPIC pins for both ISA and
non-ISA IRQs into mp_map_pin_to_irq() as below:
1) For ISA IRQs, mp_irqs array is used to map IOAPIC pin to IRQ and
mp_irqdomain_map() is used to actually program the pin.
2) For non-ISA IRQs, irqdomain is used to map IOAPIC pin to IRQ, and
mp_irqdomain_map() is also used to actually program the pin.
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Len Brown <len.brown@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Link: http://lkml.kernel.org/r/1402302011-23642-36-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/acpi/boot.c')
| -rw-r--r-- | arch/x86/kernel/acpi/boot.c | 15 |
1 files changed, 2 insertions, 13 deletions
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 9add76f15cb0..fd4b6d2e436c 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -101,17 +101,6 @@ static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = { #define ACPI_INVALID_GSI INT_MIN -static int map_gsi_to_irq(unsigned int gsi, unsigned int flags) -{ - int i; - - for (i = 0; i < nr_legacy_irqs(); i++) - if (isa_irq_to_gsi[i] == gsi) - return i; - - return mp_map_gsi_to_irq(gsi, flags); -} - /* * This is just a simple wrapper around early_ioremap(), * with sanity checks for phys == 0 and size == 0. @@ -422,7 +411,7 @@ static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, return -1; } - irq = map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC); + irq = mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC); if (irq < 0) return irq; @@ -603,7 +592,7 @@ void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) int acpi_gsi_to_irq(u32 gsi, unsigned int *irqp) { - int irq = map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC | IOAPIC_MAP_CHECK); + int irq = mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC | IOAPIC_MAP_CHECK); if (irq >= 0) { *irqp = irq; |