iommu/amd: Deprecate pci_get_bus_and_slot()

pci_get_bus_and_slot() is restrictive such that it assumes domain=0 as
where a PCI device is present. This restricts the device drivers to be
reused for other domain numbers.

Getting ready to remove pci_get_bus_and_slot() function in favor of
pci_get_domain_bus_and_slot().

Hard-code the domain number as 0 for the AMD IOMMU driver.

Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Signed-off-by: Bjorn Helgaas <helgaas@kernel.org>
Reviewed-by: Gary R Hook <gary.hook@amd.com>
Acked-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 7d5eb00..821547b 100644 (file)
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -527,7 +527,8 @@ static void amd_iommu_report_page_fault(u16 devid, u16 domain_id,
        struct iommu_dev_data *dev_data = NULL;
        struct pci_dev *pdev;
 
-       pdev = pci_get_bus_and_slot(PCI_BUS_NUM(devid), devid & 0xff);
+       pdev = pci_get_domain_bus_and_slot(0, PCI_BUS_NUM(devid),
+                                          devid & 0xff);
        if (pdev)
                dev_data = get_dev_data(&pdev->dev);
 

diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index 6fe2d03..4e4a615 100644 (file)
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -1697,8 +1697,8 @@ static int iommu_init_pci(struct amd_iommu *iommu)
        u32 range, misc, low, high;
        int ret;
 
-       iommu->dev = pci_get_bus_and_slot(PCI_BUS_NUM(iommu->devid),
-                                         iommu->devid & 0xff);
+       iommu->dev = pci_get_domain_bus_and_slot(0, PCI_BUS_NUM(iommu->devid),
+                                                iommu->devid & 0xff);
        if (!iommu->dev)
                return -ENODEV;
 
@@ -1764,8 +1764,9 @@ static int iommu_init_pci(struct amd_iommu *iommu)
        if (is_rd890_iommu(iommu->dev)) {
                int i, j;
 
-               iommu->root_pdev = pci_get_bus_and_slot(iommu->dev->bus->number,
-                               PCI_DEVFN(0, 0));
+               iommu->root_pdev =
+                       pci_get_domain_bus_and_slot(0, iommu->dev->bus->number,
+                                                   PCI_DEVFN(0, 0));
 
                /*
                 * Some rd890 systems may not be fully reconfigured by the

diff --git a/drivers/iommu/amd_iommu_v2.c b/drivers/iommu/amd_iommu_v2.c
index 7d94e1d..8696382 100644 (file)
--- a/drivers/iommu/amd_iommu_v2.c
+++ b/drivers/iommu/amd_iommu_v2.c
@@ -564,7 +564,8 @@ static int ppr_notifier(struct notifier_block *nb, unsigned long e, void *data)
        finish      = (iommu_fault->tag >> 9) & 1;
 
        devid = iommu_fault->device_id;
-       pdev = pci_get_bus_and_slot(PCI_BUS_NUM(devid), devid & 0xff);
+       pdev = pci_get_domain_bus_and_slot(0, PCI_BUS_NUM(devid),
+                                          devid & 0xff);
        if (!pdev)
                return -ENODEV;
        dev_data = get_dev_data(&pdev->dev);