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powerpc/pseries/pci: Introduce __find_pe_total_msi()

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It will help to size the PCI MSI domain.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210701132750.1475580-2-clg@kaod.org
This commit is contained in:
Cédric Le Goater 2021-07-01 15:27:19 +02:00 committed by Michael Ellerman
parent 2ac78e0c00
commit 786e5b102a
1 changed files with 7 additions and 2 deletions
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9
arch/powerpc/platforms/pseries/msi.c
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@ -164,12 +164,12 @@ static int check_req_msix(struct pci_dev *pdev, int nvec)
/* Quota calculation */
static struct device_node *find_pe_total_msi(struct pci_dev *dev, int *total)
static struct device_node *__find_pe_total_msi(struct device_node *node, int *total)
{
struct device_node *dn;
const __be32 *p;
dn = of_node_get(pci_device_to_OF_node(dev));
dn = of_node_get(node);
while (dn) {
p = of_get_property(dn, "ibm,pe-total-#msi", NULL);
if (p) {
@ -185,6 +185,11 @@ static struct device_node *find_pe_total_msi(struct pci_dev *dev, int *total)
return NULL;
}
static struct device_node *find_pe_total_msi(struct pci_dev *dev, int *total)
{
return __find_pe_total_msi(pci_device_to_OF_node(dev), total);
}
static struct device_node *find_pe_dn(struct pci_dev *dev, int *total)
{
struct device_node *dn;