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authorJoerg Roedel <joerg.roedel@amd.com>2012-06-26 16:00:08 +0200
committerJoerg Roedel <joerg.roedel@amd.com>2012-09-28 17:43:52 +0200
commitd976195c93bce4512e990d170858d20d71c95c45 (patch)
treedc4e357ab55739aa007a2fe767350b93b56849d8 /drivers/iommu
parent0b4d48cb2240d1686b3f0da234f0c9da18576503 (diff)
downloadlinux-d976195c93bce4512e990d170858d20d71c95c45.tar.bz2
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 <joerg.roedel@amd.com>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/amd_iommu.c26
1 files changed, 26 insertions, 0 deletions
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