This adds msi_host_isr() callback function support to describe
SoC-dependent service triggered by MSI.
For example, when AER interrupt is triggered by MSI, the callback function
reads SoC-dependent registers and detects that the interrupt is from AER,
and invoke AER interrupts related to MSI.
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@xxxxxxxxxxxxx>
---
drivers/pci/controller/dwc/pcie-designware-host.c | 8 ++++----
drivers/pci/controller/dwc/pcie-designware.h | 1 +
2 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index 42fbfe2..7dd1021 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -112,13 +112,13 @@ irqreturn_t dw_handle_msi_irq(struct pcie_port *pp)
static void dw_chained_msi_isr(struct irq_desc *desc)
{
struct irq_chip *chip = irq_desc_get_chip(desc);
- struct pcie_port *pp;
+ struct pcie_port *pp = irq_desc_get_handler_data(desc);
- chained_irq_enter(chip, desc);
+ if (pp->ops->msi_host_isr)
+ pp->ops->msi_host_isr(pp);
- pp = irq_desc_get_handler_data(desc);
+ chained_irq_enter(chip, desc);
dw_handle_msi_irq(pp);
-
chained_irq_exit(chip, desc);
}
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index 656e00f..e741967 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -170,6 +170,7 @@ struct dw_pcie_host_ops {
void (*scan_bus)(struct pcie_port *pp);
void (*set_num_vectors)(struct pcie_port *pp);
int (*msi_host_init)(struct pcie_port *pp);
+ void (*msi_host_isr)(struct pcie_port *pp);
};
struct pcie_port {
--
2.7.4
