irq_remapping_ir_irq_domain() is used to retrieve the remapping parent
domain for an allocation type. irq_remapping_irq_domain() is for retrieving
the actual device domain for allocating interrupts for a device.
The two functions are similar and can be unified by using explicit modes
for parent irq domain retrieval.
Add X86_IRQ_ALLOC_TYPE_IOAPIC/HPET_GET_PARENT and use it in the iommu
implementations. Drop the parent domain retrieval for PCI_MSI/X as that is
unused.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Joerg Roedel <jroedel@suse.de>
Link: https://lore.kernel.org/r/20200826112331.436350257@linutronix.de
X86_IRQ_ALLOC_TYPE_PCI_MSIX,
X86_IRQ_ALLOC_TYPE_DMAR,
X86_IRQ_ALLOC_TYPE_UV,
+ X86_IRQ_ALLOC_TYPE_IOAPIC_GET_PARENT,
+ X86_IRQ_ALLOC_TYPE_HPET_GET_PARENT,
};
struct irq_alloc_info {
return 0;
init_irq_alloc_info(&info, NULL);
- info.type = X86_IRQ_ALLOC_TYPE_IOAPIC;
+ info.type = X86_IRQ_ALLOC_TYPE_IOAPIC_GET_PARENT;
info.ioapic_id = mpc_ioapic_id(ioapic);
parent = irq_remapping_get_ir_irq_domain(&info);
if (!parent)
domain_info->data = (void *)(long)hpet_id;
init_irq_alloc_info(&info, NULL);
- info.type = X86_IRQ_ALLOC_TYPE_HPET;
+ info.type = X86_IRQ_ALLOC_TYPE_HPET_GET_PARENT;
info.hpet_id = hpet_id;
parent = irq_remapping_get_ir_irq_domain(&info);
if (parent == NULL)
if (!info)
return NULL;
+ switch (info->type) {
+ case X86_IRQ_ALLOC_TYPE_IOAPIC_GET_PARENT:
+ case X86_IRQ_ALLOC_TYPE_HPET_GET_PARENT:
+ break;
+ default:
+ return NULL;
+ }
+
devid = get_devid(info);
if (devid >= 0) {
iommu = amd_iommu_rlookup_table[devid];
static struct irq_domain *hyperv_get_ir_irq_domain(struct irq_alloc_info *info)
{
- if (info->type == X86_IRQ_ALLOC_TYPE_IOAPIC)
+ if (info->type == X86_IRQ_ALLOC_TYPE_IOAPIC_GET_PARENT)
return ioapic_ir_domain;
else
return NULL;
return NULL;
switch (info->type) {
- case X86_IRQ_ALLOC_TYPE_IOAPIC:
+ case X86_IRQ_ALLOC_TYPE_IOAPIC_GET_PARENT:
iommu = map_ioapic_to_ir(info->ioapic_id);
break;
- case X86_IRQ_ALLOC_TYPE_HPET:
+ case X86_IRQ_ALLOC_TYPE_HPET_GET_PARENT:
iommu = map_hpet_to_ir(info->hpet_id);
break;
- case X86_IRQ_ALLOC_TYPE_PCI_MSI:
- case X86_IRQ_ALLOC_TYPE_PCI_MSIX:
- iommu = map_dev_to_ir(info->msi_dev);
- break;
default:
BUG_ON(1);
break;