From: David Daney <david.daney@xxxxxxxxxx>
Signed-off-by: David Daney <david.daney@xxxxxxxxxx>
---
drivers/irqchip/irq-gic-v3-its.c | 14 +++++++++++++-
include/linux/irqchip/arm-gic-v3.h | 2 ++
2 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 1b7e155..4580970 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -1189,11 +1189,23 @@ static int its_pci_msi_vec_count(struct pci_dev *pdev)
return max(msi, msix);
}
+static u32 its_dflt_pci_requester_id(struct pci_dev *pdev, u16 alias)
+{
+ return alias;
+}
+
+static its_pci_requester_id_t its_pci_requester_id = its_dflt_pci_requester_id;
+void set_its_pci_requester_id(its_pci_requester_id_t fn)
+{
+ its_pci_requester_id = fn;
+}
+EXPORT_SYMBOL(set_its_pci_requester_id);
+
static int its_get_pci_alias(struct pci_dev *pdev, u16 alias, void *data)
{
struct its_pci_alias *dev_alias = data;
- dev_alias->dev_id = alias;
+ dev_alias->dev_id = its_pci_requester_id(pdev, alias);
if (pdev != dev_alias->pdev)
dev_alias->count += its_pci_msi_vec_count(dev_alias->pdev);
diff --git a/include/linux/irqchip/arm-gic-v3.h b/include/linux/irqchip/arm-gic-v3.h
index ffbc034..18e3757 100644
--- a/include/linux/irqchip/arm-gic-v3.h
+++ b/include/linux/irqchip/arm-gic-v3.h
@@ -389,6 +389,8 @@ int its_cpu_init(void);
int its_init(struct device_node *node, struct rdists *rdists,
struct irq_domain *domain);
+typedef u32 (*its_pci_requester_id_t)(struct pci_dev *, u16);
+void set_its_pci_requester_id(its_pci_requester_id_t fn);
#endif
#endif
--
1.9.1
--
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