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Commit d976195c authored by Joerg Roedel's avatar Joerg Roedel
Browse files

iommu/amd: Add call-back routine for HPET MSI 



Add a routine to setup a HPET MSI interrupt for remapping.

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
parent 0b4d48cb

drivers/iommu/amd_iommu.c

+26 −0
Original line number Diff line number Diff line
@@ -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