iommu/amd: Use pci_prg_resp_pasid_required()
Commit e5567f5f6762 ("PCI/ATS: Add pci_prg_resp_pasid_required()
interface.") added a common interface to check the PASID bit in the PRI
capability. Use it in the AMD driver.
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index f7cdd2a..7a0de27 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2122,23 +2122,6 @@ static int pdev_iommuv2_enable(struct pci_dev *pdev)
return ret;
}
-/* FIXME: Move this to PCI code */
-#define PCI_PRI_TLP_OFF (1 << 15)
-
-static bool pci_pri_tlp_required(struct pci_dev *pdev)
-{
- u16 status;
- int pos;
-
- pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_PRI);
- if (!pos)
- return false;
-
- pci_read_config_word(pdev, pos + PCI_PRI_STATUS, &status);
-
- return (status & PCI_PRI_TLP_OFF) ? true : false;
-}
-
/*
* If a device is not yet associated with a domain, this function makes the
* device visible in the domain
@@ -2167,7 +2150,7 @@ static int attach_device(struct device *dev,
dev_data->ats.enabled = true;
dev_data->ats.qdep = pci_ats_queue_depth(pdev);
- dev_data->pri_tlp = pci_pri_tlp_required(pdev);
+ dev_data->pri_tlp = pci_prg_resp_pasid_required(pdev);
}
} else if (amd_iommu_iotlb_sup &&
pci_enable_ats(pdev, PAGE_SHIFT) == 0) {