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Diffstat (limited to 'arch/x86/kernel/apic/io_apic.c')
-rw-r--r--arch/x86/kernel/apic/io_apic.c92
1 files changed, 64 insertions, 28 deletions
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index c0b4468683f..53243ca7816 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -2276,26 +2276,28 @@ static void __target_IO_APIC_irq(unsigned int irq, unsigned int dest, struct irq
/*
* Either sets desc->affinity to a valid value, and returns
- * ->cpu_mask_to_apicid of that, or returns BAD_APICID and
+ * ->cpu_mask_to_apicid of that in dest_id, or returns -1 and
* leaves desc->affinity untouched.
*/
unsigned int
-set_desc_affinity(struct irq_desc *desc, const struct cpumask *mask)
+set_desc_affinity(struct irq_desc *desc, const struct cpumask *mask,
+ unsigned int *dest_id)
{
struct irq_cfg *cfg;
unsigned int irq;
if (!cpumask_intersects(mask, cpu_online_mask))
- return BAD_APICID;
+ return -1;
irq = desc->irq;
cfg = desc->chip_data;
if (assign_irq_vector(irq, cfg, mask))
- return BAD_APICID;
+ return -1;
cpumask_copy(desc->affinity, mask);
- return apic->cpu_mask_to_apicid_and(desc->affinity, cfg->domain);
+ *dest_id = apic->cpu_mask_to_apicid_and(desc->affinity, cfg->domain);
+ return 0;
}
static int
@@ -2311,12 +2313,11 @@ set_ioapic_affinity_irq_desc(struct irq_desc *desc, const struct cpumask *mask)
cfg = desc->chip_data;
spin_lock_irqsave(&ioapic_lock, flags);
- dest = set_desc_affinity(desc, mask);
- if (dest != BAD_APICID) {
+ ret = set_desc_affinity(desc, mask, &dest);
+ if (!ret) {
/* Only the high 8 bits are valid. */
dest = SET_APIC_LOGICAL_ID(dest);
__target_IO_APIC_irq(irq, dest, cfg);
- ret = 0;
}
spin_unlock_irqrestore(&ioapic_lock, flags);
@@ -2431,7 +2432,14 @@ asmlinkage void smp_irq_move_cleanup_interrupt(void)
continue;
cfg = irq_cfg(irq);
- spin_lock(&desc->lock);
+ raw_spin_lock(&desc->lock);
+
+ /*
+ * Check if the irq migration is in progress. If so, we
+ * haven't received the cleanup request yet for this irq.
+ */
+ if (cfg->move_in_progress)
+ goto unlock;
if (vector == cfg->vector && cpumask_test_cpu(me, cfg->domain))
goto unlock;
@@ -2450,7 +2458,7 @@ asmlinkage void smp_irq_move_cleanup_interrupt(void)
}
__get_cpu_var(vector_irq)[vector] = -1;
unlock:
- spin_unlock(&desc->lock);
+ raw_spin_unlock(&desc->lock);
}
irq_exit();
@@ -3267,7 +3275,8 @@ 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 +3310,10 @@ 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);
@@ -3347,8 +3359,7 @@ static int set_msi_irq_affinity(unsigned int irq, const struct cpumask *mask)
struct msi_msg msg;
unsigned int dest;
- dest = set_desc_affinity(desc, mask);
- if (dest == BAD_APICID)
+ if (set_desc_affinity(desc, mask, &dest))
return -1;
cfg = desc->chip_data;
@@ -3380,8 +3391,7 @@ ir_set_msi_irq_affinity(unsigned int irq, const struct cpumask *mask)
if (get_irte(irq, &irte))
return -1;
- dest = set_desc_affinity(desc, mask);
- if (dest == BAD_APICID)
+ if (set_desc_affinity(desc, mask, &dest))
return -1;
irte.vector = cfg->vector;
@@ -3466,7 +3476,7 @@ 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;
@@ -3563,8 +3573,7 @@ static int dmar_msi_set_affinity(unsigned int irq, const struct cpumask *mask)
struct msi_msg msg;
unsigned int dest;
- dest = set_desc_affinity(desc, mask);
- if (dest == BAD_APICID)
+ if (set_desc_affinity(desc, mask, &dest))
return -1;
cfg = desc->chip_data;
@@ -3599,7 +3608,7 @@ 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);
@@ -3619,8 +3628,7 @@ static int hpet_msi_set_affinity(unsigned int irq, const struct cpumask *mask)
struct msi_msg msg;
unsigned int dest;
- dest = set_desc_affinity(desc, mask);
- if (dest == BAD_APICID)
+ if (set_desc_affinity(desc, mask, &dest))
return -1;
cfg = desc->chip_data;
@@ -3639,6 +3647,19 @@ 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 +3671,36 @@ 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;
}
@@ -3697,8 +3734,7 @@ static int set_ht_irq_affinity(unsigned int irq, const struct cpumask *mask)
struct irq_cfg *cfg;
unsigned int dest;
- dest = set_desc_affinity(desc, mask);
- if (dest == BAD_APICID)
+ if (set_desc_affinity(desc, mask, &dest))
return -1;
cfg = desc->chip_data;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-04-27 13:56:45 +0000