From: tn@semihalf.com (Tomasz Nowicki)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V8 7/8] irqchip/gicv3-its: Factor out PCI-MSI part that might be reused for ACPI
Date: Thu, 11 Aug 2016 12:06:37 +0200 [thread overview]
Message-ID: <1470909998-16710-8-git-send-email-tn@semihalf.com> (raw)
In-Reply-To: <1470909998-16710-1-git-send-email-tn@semihalf.com>
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>
---
drivers/irqchip/irq-gic-v3-its-pci-msi.c | 44 +++++++++++++++++++++-----------
1 file changed, 29 insertions(+), 15 deletions(-)
diff --git a/drivers/irqchip/irq-gic-v3-its-pci-msi.c b/drivers/irqchip/irq-gic-v3-its-pci-msi.c
index aee60ed..d2c2496 100644
--- a/drivers/irqchip/irq-gic-v3-its-pci-msi.c
+++ b/drivers/irqchip/irq-gic-v3-its-pci-msi.c
@@ -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 device_node *np;
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;
+
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);
--
1.9.1
next prev parent reply other threads:[~2016-08-11 10:06 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-11 10:06 [PATCH V8 0/8] Introduce ACPI world to ITS irqchip Tomasz Nowicki
2016-08-11 10:06 ` [PATCH V8 1/8] ACPI: I/O Remapping Table (IORT) initial support Tomasz Nowicki
2016-08-12 16:33 ` Lorenzo Pieralisi
2016-08-18 6:25 ` Tomasz Nowicki
2016-08-31 9:30 ` Lorenzo Pieralisi
2016-08-18 10:55 ` Dennis Chen
2016-08-18 11:14 ` Lorenzo Pieralisi
2016-08-19 3:39 ` Dennis Chen
2016-09-02 11:52 ` [Linaro-acpi] " Fu Wei
2016-09-05 6:12 ` Tomasz Nowicki
2016-09-05 15:31 ` Fu Wei
2016-08-11 10:06 ` [PATCH V8 2/8] ACPI: Add new IORT functions to support MSI domain handling Tomasz Nowicki
2016-08-12 16:42 ` Lorenzo Pieralisi
2016-08-16 2:15 ` Zheng, Lv
2016-08-16 10:41 ` Marc Zyngier
2016-08-11 10:06 ` [PATCH V8 3/8] PCI/MSI: Setup MSI domain on a per-device basis using IORT ACPI table Tomasz Nowicki
2016-08-11 10:06 ` [PATCH V8 4/8] irqchip/gicv3-its: Cleanup for ITS domain initialization Tomasz Nowicki
2016-08-11 10:06 ` [PATCH V8 5/8] irqchip/gicv3-its: Refactor ITS DT init code to prepare for ACPI Tomasz Nowicki
2016-08-17 8:33 ` Hanjun Guo
2016-08-17 15:58 ` Bjorn Helgaas
2016-08-18 6:42 ` Tomasz Nowicki
2016-08-18 6:55 ` Hanjun Guo
2016-08-11 10:06 ` [PATCH V8 6/8] irqchip/gicv3-its: Probe ITS in the ACPI way Tomasz Nowicki
2016-08-11 10:06 ` Tomasz Nowicki [this message]
2016-08-11 10:06 ` [PATCH V8 8/8] irqchip/gicv3-its: Use MADT ITS subtable to do PCI/MSI domain initialization Tomasz Nowicki
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