From: David Woodhouse Date: Sat, 24 Oct 2020 21:35:24 +0000 (+0100) Subject: iommu/amd: Implement select() method on remapping irqdomain X-Git-Tag: v5.11-rc1~171^2~18 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a1a785b572425ab3ca5494a4be02ab59a796df51;p=thirdparty%2Fkernel%2Flinux.git iommu/amd: Implement select() method on remapping irqdomain Preparatory change to remove irq_remapping_get_irq_domain(). Signed-off-by: David Woodhouse Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/r/20201024213535.443185-25-dwmw2@infradead.org --- diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index 9744cdbefd886..31b22244e9c2f 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,