The following commit has been merged into the x86/apic branch of tip:
Commit-ID: a1a785b572425ab3ca5494a4be02ab59a796df51
Gitweb: https://git.kernel.org/tip/a1a785b572425ab3ca5494a4be02ab59a796df51
Author: David Woodhouse <dwmw@xxxxxxxxxxxx>
AuthorDate: Sat, 24 Oct 2020 22:35:24 +01:00
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitterDate: Wed, 28 Oct 2020 20:26:27 +01:00
iommu/amd: Implement select() method on remapping irqdomain
Preparatory change to remove irq_remapping_get_irq_domain().
Signed-off-by: David Woodhouse <dwmw@xxxxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20201024213535.443185-25-dwmw2@xxxxxxxxxxxxx
---
drivers/iommu/amd/iommu.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c
index 9744cdb..31b2224 100644
--- a/drivers/iommu/amd/iommu.c
+++ b/drivers/iommu/amd/iommu.c
@@ -3882,7 +3882,26 @@ static void irq_remapping_deactivate(struct irq_domain *domain,
irte_info->index);
}
+static int irq_remapping_select(struct irq_domain *d, struct irq_fwspec *fwspec,
+ enum irq_domain_bus_token bus_token)
+{
+ struct amd_iommu *iommu;
+ int devid = -1;
+
+ if (x86_fwspec_is_ioapic(fwspec))
+ devid = get_ioapic_devid(fwspec->param[0]);
+ else if (x86_fwspec_is_hpet(fwspec))
+ devid = get_hpet_devid(fwspec->param[0]);
+
+ if (devid < 0)
+ return 0;
+
+ iommu = amd_iommu_rlookup_table[devid];
+ return iommu && iommu->ir_domain == d;
+}
+
static const struct irq_domain_ops amd_ir_domain_ops = {
+ .select = irq_remapping_select,
.alloc = irq_remapping_alloc,
.free = irq_remapping_free,
.activate = irq_remapping_activate,
|