diff options
| author | Joerg Roedel <joerg.roedel@amd.com> | 2012-06-26 16:00:08 +0200 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2012-09-28 17:43:52 +0200 |
| commit | d976195c93bce4512e990d170858d20d71c95c45 (patch) | |
| tree | dc4e357ab55739aa007a2fe767350b93b56849d8 /drivers/iommu/amd_iommu.c | |
| parent | 0b4d48cb2240d1686b3f0da234f0c9da18576503 (diff) | |
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/amd_iommu.c')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 26 |
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 |