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s390/pci: Handling multifunctions

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We allow multiple functions on a single bus.
We suppress the ZPCI_DEVFN definition and replace its
occurences with zpci->devfn.

We verify the number of device during the registration.

There can never be more domains in use than existing
devices, so we do not need to verify the count of domain
after having verified the count of devices.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Pierre Morel
2020-04-22 15:15:23 +02:00
committed by Vasily Gorbik
parent 65e450a9f9
commit 44510d6fa0
6 changed files with 159 additions and 51 deletions
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4
arch/s390/pci/pci_event.c
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@@ -55,7 +55,7 @@ static void __zpci_event_error(struct zpci_ccdf_err *ccdf)
zpci_err_hex(ccdf, sizeof(*ccdf));
if (zdev)
pdev = pci_get_slot(zdev->zbus->bus, ZPCI_DEVFN);
pdev = pci_get_slot(zdev->zbus->bus, zdev->devfn);
pr_err("%s: Event 0x%x reports an error for PCI function 0x%x\n",
pdev ? pci_name(pdev) : "n/a", ccdf->pec, ccdf->fid);
@@ -81,7 +81,7 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf)
int ret;
if (zdev && zdev->zbus && zdev->zbus->bus)
pdev = pci_get_slot(zdev->zbus->bus, ZPCI_DEVFN);
pdev = pci_get_slot(zdev->zbus->bus, zdev->devfn);
zpci_err("avail CCDF:\n");
zpci_err_hex(ccdf, sizeof(*ccdf));