diff options
| author |   Jean-Philippe Brucker <jean-philippe.brucker@arm.com> | 2019-04-10 16:21:08 +0100 |
|---|---|---|
| committer |   Joerg Roedel <jroedel@suse.de> | 2019-04-11 17:30:53 +0200 |
| commit | 83d18bdff18f680ce2c0af10a663da19f7dede93 (patch) | |
| tree | ec7e7f918e0f9f3e2bd48e11d27fbf8d0372fba0 /drivers/iommu | |
| parent | Linux 5.1-rc4 (diff) | |
| download | linux-dev-83d18bdff18f680ce2c0af10a663da19f7dede93.tar.xz linux-dev-83d18bdff18f680ce2c0af10a663da19f7dede93.zip | |
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>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 19 |
1 files changed, 1 insertions, 18 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index f7cdd2ab7f11..7a0de274934c 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2122,23 +2122,6 @@ out_err: 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) { |