diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2020-08-26 13:16:36 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-09-16 16:52:29 +0200 |
| commit | b4c364da32cf3b85297648ff5563de2c47d9e32f (patch) | |
| tree | e0113ccfac5f55f3ccbc6788a4759d9a68e67239 /drivers/iommu | |
| parent | 801b5e4c4eec7b6c7f968d4bbce43da7cacffae4 (diff) | |
x86/irq: Add allocation type for parent domain retrieval
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
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/amd/iommu.c | 8 | ||||
| -rw-r--r-- | drivers/iommu/hyperv-iommu.c | 2 | ||||
| -rw-r--r-- | drivers/iommu/intel/irq_remapping.c | 8 |
3 files changed, 11 insertions, 7 deletions
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index cf26b735922b..b98b0abac103 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -3548,6 +3548,14 @@ static struct irq_domain *get_ir_irq_domain(struct irq_alloc_info *info) 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]; diff --git a/drivers/iommu/hyperv-iommu.c b/drivers/iommu/hyperv-iommu.c index 8919c1c70b68..e7bee11ecedc 100644 --- a/drivers/iommu/hyperv-iommu.c +++ b/drivers/iommu/hyperv-iommu.c @@ -184,7 +184,7 @@ static int __init hyperv_enable_irq_remapping(void) 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; diff --git a/drivers/iommu/intel/irq_remapping.c b/drivers/iommu/intel/irq_remapping.c index 33c438989391..9b15cd015f8d 100644 --- a/drivers/iommu/intel/irq_remapping.c +++ b/drivers/iommu/intel/irq_remapping.c @@ -1115,16 +1115,12 @@ static struct irq_domain *intel_get_ir_irq_domain(struct irq_alloc_info *info) 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; |