diff options
| author | David Woodhouse <dwmw@amazon.co.uk> | 2020-10-25 00:35:24 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-10-28 22:26:27 +0300 |
| commit | a1a785b572425ab3ca5494a4be02ab59a796df51 (patch) | |
| tree | 72d2bee6a51fd1ec35e33ad1277afa8ff3ea1979 /drivers/iommu | |
| parent | 6452ea2a323b80868ce5e6d3030e4ccbeab9dc30 (diff) | |
| download | linux-a1a785b572425ab3ca5494a4be02ab59a796df51.tar.xz | |
iommu/amd: Implement select() method on remapping irqdomain
Preparatory change to remove irq_remapping_get_irq_domain().
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201024213535.443185-25-dwmw2@infradead.org
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/amd/iommu.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index 9744cdbefd88..31b22244e9c2 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, |