Enhance SFI to provide basic support of irqdomain with identity mapping between GSIs and IRQs.
Signed-off-by: Jiang Liu <[email protected]> --- arch/x86/pci/intel_mid_pci.c | 3 +++ arch/x86/platform/intel-mid/sfi.c | 2 ++ arch/x86/platform/sfi/sfi.c | 11 ++++++++++- 3 files changed, 15 insertions(+), 1 deletion(-) diff --git a/arch/x86/pci/intel_mid_pci.c b/arch/x86/pci/intel_mid_pci.c index 84b9d672843d..fcbdc5fac2c6 100644 --- a/arch/x86/pci/intel_mid_pci.c +++ b/arch/x86/pci/intel_mid_pci.c @@ -217,6 +217,9 @@ static int intel_mid_pci_irq_enable(struct pci_dev *dev) * MRST only have IOAPIC, the PCI irq lines are 1:1 mapped to * IOAPIC RTE entries, so we just enable RTE for the device. */ + if (mp_map_gsi_to_irq(dev->irq, IOAPIC_MAP_ALLOC) < 0) + return -EBUSY; + irq_attr.ioapic = mp_find_ioapic(dev->irq); irq_attr.ioapic_pin = dev->irq; irq_attr.trigger = 1; /* level */ diff --git a/arch/x86/platform/intel-mid/sfi.c b/arch/x86/platform/intel-mid/sfi.c index 994c40bd7cb7..7161395e7de7 100644 --- a/arch/x86/platform/intel-mid/sfi.c +++ b/arch/x86/platform/intel-mid/sfi.c @@ -473,6 +473,8 @@ static int __init sfi_parse_devs(struct sfi_table_header *table) /* PNW and CLV go with active low */ irq_attr.polarity = 1; } + WARN_ON(mp_map_gsi_to_irq(irq, + IOAPIC_MAP_ALLOC) < 0); io_apic_set_pci_routing(NULL, irq, &irq_attr); } } else { diff --git a/arch/x86/platform/sfi/sfi.c b/arch/x86/platform/sfi/sfi.c index 3bd7cf642680..cda31be8dbe5 100644 --- a/arch/x86/platform/sfi/sfi.c +++ b/arch/x86/platform/sfi/sfi.c @@ -25,6 +25,7 @@ #include <linux/init.h> #include <linux/sfi.h> #include <linux/io.h> +#include <linux/irqdomain.h> #include <asm/io_apic.h> #include <asm/mpspec.h> @@ -70,6 +71,13 @@ static int __init sfi_parse_cpus(struct sfi_table_header *table) #endif /* CONFIG_X86_LOCAL_APIC */ #ifdef CONFIG_X86_IO_APIC +static struct irq_domain_ops sfi_ioapic_irqdomain_ops; + +static struct irq_domain *sfi_ioapic_create_irqdomain(int ioapic, void *arg) +{ + ioapic_identity_map = 1; + return mp_irqdomain_create(ioapic, NULL, &sfi_ioapic_irqdomain_ops); +} static int __init sfi_parse_ioapic(struct sfi_table_header *table) { @@ -82,7 +90,8 @@ static int __init sfi_parse_ioapic(struct sfi_table_header *table) pentry = (struct sfi_apic_table_entry *)sb->pentry; for (i = 0; i < num; i++) { - mp_register_ioapic(i, pentry->phys_addr, gsi_top, NULL, NULL); + mp_register_ioapic(i, pentry->phys_addr, gsi_top, + sfi_ioapic_create_irqdomain, NULL); pentry++; } -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
