Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes...

[linux-2.6-omap-h63xx.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 ff1759a1128e367e7ae128992dde25bbf0336e03..1bb5c6cee3ebb140e30e421c05615bf94b001936 100644 (file)
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -592,10 +592,12 @@ set_desc_affinity(struct irq_desc *desc, const struct cpumask *mask)
        if (assign_irq_vector(irq, cfg, mask))
                return BAD_APICID;
 
-       cpumask_and(desc->affinity, cfg->domain, mask);
+       /* check that before desc->addinity get updated */
        set_extra_move_desc(desc, mask);
 
-       return apic->cpu_mask_to_apicid_and(desc->affinity, cpu_online_mask);
+       cpumask_copy(desc->affinity, mask);
+
+       return apic->cpu_mask_to_apicid_and(desc->affinity, cfg->domain);
 }
 
 static void
@@ -1428,7 +1430,6 @@ void __setup_vector_irq(int cpu)
 
 static struct irq_chip ioapic_chip;
 static struct irq_chip ir_ioapic_chip;
-static struct irq_chip msi_ir_chip;
 
 #define IOAPIC_AUTO     -1
 #define IOAPIC_EDGE     0
@@ -2414,6 +2415,7 @@ asmlinkage void smp_irq_move_cleanup_interrupt(void)
        me = smp_processor_id();
        for (vector = FIRST_EXTERNAL_VECTOR; vector < NR_VECTORS; vector++) {
                unsigned int irq;
+               unsigned int irr;
                struct irq_desc *desc;
                struct irq_cfg *cfg;
                irq = __get_cpu_var(vector_irq)[vector];
@@ -2433,6 +2435,18 @@ asmlinkage void smp_irq_move_cleanup_interrupt(void)
                if (vector == cfg->vector && cpumask_test_cpu(me, cfg->domain))
                        goto unlock;
 
+               irr = apic_read(APIC_IRR + (vector / 32 * 0x10));
+               /*
+                * Check if the vector that needs to be cleanedup is
+                * registered at the cpu's IRR. If so, then this is not
+                * the best time to clean it up. Lets clean it up in the
+                * next attempt by sending another IRQ_MOVE_CLEANUP_VECTOR
+                * to myself.
+                */
+               if (irr  & (1 << (vector % 32))) {
+                       apic->send_IPI_self(IRQ_MOVE_CLEANUP_VECTOR);
+                       goto unlock;
+               }
                __get_cpu_var(vector_irq)[vector] = -1;
                cfg->move_cleanup_count--;
 unlock:
@@ -2650,20 +2664,20 @@ static struct irq_chip ioapic_chip __read_mostly = {
        .retrigger      = ioapic_retrigger_irq,
 };
 
-#ifdef CONFIG_INTR_REMAP
 static struct irq_chip ir_ioapic_chip __read_mostly = {
        .name           = "IR-IO-APIC",
        .startup        = startup_ioapic_irq,
        .mask           = mask_IO_APIC_irq,
        .unmask         = unmask_IO_APIC_irq,
+#ifdef CONFIG_INTR_REMAP
        .ack            = ack_x2apic_edge,
        .eoi            = ack_x2apic_level,
 #ifdef CONFIG_SMP
        .set_affinity   = set_ir_ioapic_affinity_irq,
+#endif
 #endif
        .retrigger      = ioapic_retrigger_irq,
 };
-#endif
 
 static inline void init_IO_APIC_traps(void)
 {
@@ -3378,18 +3392,18 @@ static struct irq_chip msi_chip = {
        .retrigger      = ioapic_retrigger_irq,
 };
 
-#ifdef CONFIG_INTR_REMAP
 static struct irq_chip msi_ir_chip = {
        .name           = "IR-PCI-MSI",
        .unmask         = unmask_msi_irq,
        .mask           = mask_msi_irq,
+#ifdef CONFIG_INTR_REMAP
        .ack            = ack_x2apic_edge,
 #ifdef CONFIG_SMP
        .set_affinity   = ir_set_msi_irq_affinity,
+#endif
 #endif
        .retrigger      = ioapic_retrigger_irq,
 };
-#endif
 
 /*
  * Map the PCI dev to the corresponding remapping hardware unit
@@ -3451,9 +3465,13 @@ int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
        int ret, sub_handle;
        struct msi_desc *msidesc;
        unsigned int irq_want;
-       struct intel_iommu *iommu = 0;
+       struct intel_iommu *iommu = NULL;
        int index = 0;
 
+       /* x86 doesn't support multiple MSI yet */
+       if (type == PCI_CAP_ID_MSI && nvec > 1)
+               return 1;
+
        irq_want = nr_irqs_gsi;
        sub_handle = 0;
        list_for_each_entry(msidesc, &dev->msi_list, list) {
@@ -3586,7 +3604,7 @@ static void hpet_msi_set_affinity(unsigned int irq, const struct cpumask *mask)
 
 #endif /* CONFIG_SMP */
 
-struct irq_chip hpet_msi_type = {
+static struct irq_chip hpet_msi_type = {
        .name = "HPET_MSI",
        .unmask = hpet_msi_unmask,
        .mask = hpet_msi_mask,
@@ -4117,9 +4135,12 @@ static int __init ioapic_insert_resources(void)
        struct resource *r = ioapic_resources;
 
        if (!r) {
-               printk(KERN_ERR
-                      "IO APIC resources could be not be allocated.\n");
-               return -1;
+               if (nr_ioapics > 0) {
+                       printk(KERN_ERR
+                               "IO APIC resources couldn't be allocated.\n");
+                       return -1;
+               }
+               return 0;
        }
 
        for (i = 0; i < nr_ioapics; i++) {