From d976195c93bce4512e990d170858d20d71c95c45 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Tue, 26 Jun 2012 16:00:08 +0200 Subject: iommu/amd: Add call-back routine for HPET MSI Add a routine to setup a HPET MSI interrupt for remapping. Signed-off-by: Joerg Roedel --- drivers/iommu/amd_iommu.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'drivers/iommu') diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index bcf48156868b..aeb890c35f7e 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -4200,4 +4200,30 @@ static int msi_setup_irq(struct pci_dev *pdev, unsigned int irq, return 0; } +static int setup_hpet_msi(unsigned int irq, unsigned int id) +{ + struct irq_2_iommu *irte_info; + struct irq_cfg *cfg; + int index, devid; + + cfg = irq_get_chip_data(irq); + if (!cfg) + return -EINVAL; + + irte_info = &cfg->irq_2_iommu; + devid = get_hpet_devid(id); + if (devid < 0) + return devid; + + index = alloc_irq_index(cfg, devid, 1); + if (index < 0) + return index; + + irte_info->sub_handle = devid; + irte_info->irte_index = index; + irte_info->iommu = (void *)cfg; + + return 0; +} + #endif -- cgit v1.2.3