Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

irqchip/gicv3-its: Factor out PCI-MSI part that might be reused for ACPI

Browse source 
Firmware agnostic code lands in common functions which do necessary
domain initialization based on unique domain handler. DT specific
code goes to DT specific init call.

Signed-off-by: Tomasz Nowicki <tn@semihalf.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Tomasz Nowicki 2016-09-12 20:32:26 +02:00 committed by Marc Zyngier
parent 3f010cf197
commit db744aaa27
1 changed files with 29 additions and 15 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

44
drivers/irqchip/irq-gic-v3-its-pci-msi.c
View file

@ -106,34 +106,48 @@ static struct of_device_id its_device_id[] = {
{},
};
static int __init its_pci_msi_init(void)
static int __init its_pci_msi_init_one(struct fwnode_handle *handle,
const char *name)
{
struct irq_domain *parent;
parent = irq_find_matching_fwnode(handle, DOMAIN_BUS_NEXUS);
if (!parent || !msi_get_domain_info(parent)) {
pr_err("%s: Unable to locate ITS domain\n", name);
return -ENXIO;
}
if (!pci_msi_create_irq_domain(handle, &its_pci_msi_domain_info,
parent)) {
pr_err("%s: Unable to create PCI domain\n", name);
return -ENOMEM;
}
return 0;
}
static int __init its_pci_of_msi_init(void)
{
struct device_node *np;
struct irq_domain *parent;
for (np = of_find_matching_node(NULL, its_device_id); np;
np = of_find_matching_node(np, its_device_id)) {
if (!of_property_read_bool(np, "msi-controller"))
continue;
parent = irq_find_matching_host(np, DOMAIN_BUS_NEXUS);
if (!parent || !msi_get_domain_info(parent)) {
pr_err("%s: unable to locate ITS domain\n",
np->full_name);
if (its_pci_msi_init_one(of_node_to_fwnode(np), np->full_name))
continue;
}
if (!pci_msi_create_irq_domain(of_node_to_fwnode(np),
&its_pci_msi_domain_info,
parent)) {
pr_err("%s: unable to create PCI domain\n",
np->full_name);
continue;
}
pr_info("PCI/MSI: %s domain created\n", np->full_name);
}
return 0;
}
static int __init its_pci_msi_init(void)
{
its_pci_of_msi_init();
return 0;
}
early_initcall(its_pci_msi_init);