Merge branch 'timers-for-linus-hpet' of git://git.kernel.org/pub/scm/linux/kernel...

[sfrench/cifs-2.6.git] / arch / x86 / kernel / apic / io_apic.c

diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index c0b4468683f9075bbb9b2f9fe130cd9342c54877..d5d498fbee4bf33db826aa21e3febd8be8d39262 100644 (file)
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -3267,7 +3267,8 @@ void destroy_irq(unsigned int irq)
  * MSI message composition
  */
 #ifdef CONFIG_PCI_MSI
-static int msi_compose_msg(struct pci_dev *pdev, unsigned int irq, struct msi_msg *msg)
+static int msi_compose_msg(struct pci_dev *pdev, unsigned int irq,
+                          struct msi_msg *msg, u8 hpet_id)
 {
        struct irq_cfg *cfg;
        int err;
@@ -3301,7 +3302,10 @@ static int msi_compose_msg(struct pci_dev *pdev, unsigned int irq, struct msi_ms
                irte.dest_id = IRTE_DEST(dest);
 
                /* Set source-id of interrupt request */
-               set_msi_sid(&irte, pdev);
+               if (pdev)
+                       set_msi_sid(&irte, pdev);
+               else
+                       set_hpet_sid(&irte, hpet_id);
 
                modify_irte(irq, &irte);
 
@@ -3466,7 +3470,7 @@ static int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, int irq)
        int ret;
        struct msi_msg msg;
 
-       ret = msi_compose_msg(dev, irq, &msg);
+       ret = msi_compose_msg(dev, irq, &msg, -1);
        if (ret < 0)
                return ret;
 
@@ -3599,7 +3603,7 @@ int arch_setup_dmar_msi(unsigned int irq)
        int ret;
        struct msi_msg msg;
 
-       ret = msi_compose_msg(NULL, irq, &msg);
+       ret = msi_compose_msg(NULL, irq, &msg, -1);
        if (ret < 0)
                return ret;
        dmar_msi_write(irq, &msg);
@@ -3639,6 +3643,19 @@ static int hpet_msi_set_affinity(unsigned int irq, const struct cpumask *mask)
 
 #endif /* CONFIG_SMP */
 
+static struct irq_chip ir_hpet_msi_type = {
+       .name = "IR-HPET_MSI",
+       .unmask = hpet_msi_unmask,
+       .mask = hpet_msi_mask,
+#ifdef CONFIG_INTR_REMAP
+       .ack = ir_ack_apic_edge,
+#ifdef CONFIG_SMP
+       .set_affinity = ir_set_msi_irq_affinity,
+#endif
+#endif
+       .retrigger = ioapic_retrigger_irq,
+};
+
 static struct irq_chip hpet_msi_type = {
        .name = "HPET_MSI",
        .unmask = hpet_msi_unmask,
@@ -3650,20 +3667,36 @@ static struct irq_chip hpet_msi_type = {
        .retrigger = ioapic_retrigger_irq,
 };
 
-int arch_setup_hpet_msi(unsigned int irq)
+int arch_setup_hpet_msi(unsigned int irq, unsigned int id)
 {
        int ret;
        struct msi_msg msg;
        struct irq_desc *desc = irq_to_desc(irq);
 
-       ret = msi_compose_msg(NULL, irq, &msg);
+       if (intr_remapping_enabled) {
+               struct intel_iommu *iommu = map_hpet_to_ir(id);
+               int index;
+
+               if (!iommu)
+                       return -1;
+
+               index = alloc_irte(iommu, irq, 1);
+               if (index < 0)
+                       return -1;
+       }
+
+       ret = msi_compose_msg(NULL, irq, &msg, id);
        if (ret < 0)
                return ret;
 
        hpet_msi_write(irq, &msg);
        desc->status |= IRQ_MOVE_PCNTXT;
-       set_irq_chip_and_handler_name(irq, &hpet_msi_type, handle_edge_irq,
-               "edge");
+       if (irq_remapped(irq))
+               set_irq_chip_and_handler_name(irq, &ir_hpet_msi_type,
+                                             handle_edge_irq, "edge");
+       else
+               set_irq_chip_and_handler_name(irq, &hpet_msi_type,
+                                             handle_edge_irq, "edge");
 
        return 0;
 }