From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Jiang Liu To: Benjamin Herrenschmidt , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , "Rafael J. Wysocki" , Bjorn Helgaas , Randy Dunlap , Yinghai Lu , Len Brown , Pavel Machek , x86@kernel.org Cc: Jiang Liu , Konrad Rzeszutek Wilk , Andrew Morton , Tony Luck , Joerg Roedel , Paul Gortmaker , Greg Kroah-Hartman , linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org, sfi-devel@simplefirmware.org, linux-pm@vger.kernel.org Subject: [RFC Patch Part1 V1 21/30] x86, ACPI, irq: provide basic irqdomain support Date: Fri, 16 May 2014 16:05:41 +0800 Message-Id: <1400227550-5935-22-git-send-email-jiang.liu@linux.intel.com> In-Reply-To: <1400227550-5935-1-git-send-email-jiang.liu@linux.intel.com> References: <1400227550-5935-1-git-send-email-jiang.liu@linux.intel.com> Sender: linux-acpi-owner@vger.kernel.org List-ID: Enhance ACPI driver to provide basic irqdomain support for IOAPIC. Signed-off-by: Jiang Liu --- arch/x86/kernel/acpi/boot.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index f70f4f318316..1ee639e74d50 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -31,6 +31,7 @@ #include #include #include +#include #include #include #include @@ -331,6 +332,23 @@ static void mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity); +static struct irq_domain_ops acpi_irqdomain_ops; + +static struct irq_domain *acpi_create_irqdomain(int idx, void *arg) +{ + struct mp_ioapic_gsi *gsi_cfg = mp_ioapic_gsi_routing(idx); + + /* + * Statically allocate IRQ number for legacy IRQs and all pins on the + * first IOAPIC. + */ + if (gsi_cfg->gsi_base < NR_IRQS_LEGACY && + ioapic_dynirq_base < gsi_cfg->gsi_end) + ioapic_dynirq_base = gsi_cfg->gsi_end + 1; + + return mp_irqdomain_create(idx, NULL, &acpi_irqdomain_ops); +} + static int __init acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) { @@ -345,7 +363,7 @@ acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) mp_register_ioapic(ioapic->id, ioapic->address, ioapic->global_irq_base, - NULL, NULL); + acpi_create_irqdomain, NULL); return 0; } -- 1.7.10.4