Commit 3a51c0cb authored by Michael Ellerman's avatar Michael Ellerman Committed by Benjamin Herrenschmidt
Browse files

powerpc/pseries: Add support for ibm,req#msi-x



Firmware encodes the number of MSI-X requested by a device in a

different property than for MSI. Pull the property name out as a
parameter and share the logic for both cases.
Signed-off-by: default avatarMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent e27ed698
......@@ -132,7 +132,7 @@ static void rtas_teardown_msi_irqs(struct pci_dev *pdev)
rtas_disable_msi(pdev);
}
static int check_req_msi(struct pci_dev *pdev, int nvec)
static int check_req(struct pci_dev *pdev, int nvec, char *prop_name)
{
struct device_node *dn;
struct pci_dn *pdn;
......@@ -144,24 +144,34 @@ static int check_req_msi(struct pci_dev *pdev, int nvec)
dn = pdn->node;
req_msi = of_get_property(dn, "ibm,req#msi", NULL);
req_msi = of_get_property(dn, prop_name, NULL);
if (!req_msi) {
pr_debug("rtas_msi: No ibm,req#msi on %s\n", dn->full_name);
pr_debug("rtas_msi: No %s on %s\n", prop_name, dn->full_name);
return -ENOENT;
}
if (*req_msi < nvec) {
pr_debug("rtas_msi: ibm,req#msi requests < %d MSIs\n", nvec);
pr_debug("rtas_msi: %s requests < %d MSIs\n", prop_name, nvec);
return -ENOSPC;
}
return 0;
}
static int check_req_msi(struct pci_dev *pdev, int nvec)
{
return check_req(pdev, nvec, "ibm,req#msi");
}
static int check_req_msix(struct pci_dev *pdev, int nvec)
{
return check_req(pdev, nvec, "ibm,req#msi-x");
}
static int rtas_msi_check_device(struct pci_dev *pdev, int nvec, int type)
{
if (type == PCI_CAP_ID_MSIX)
pr_debug("rtas_msi: MSI-X untested, trying anyway.\n");
return check_req_msix(pdev, nvec);
return check_req_msi(pdev, nvec);
}
......
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