[PATCH v7 13/19] PCI: microchip: Add get_events() callback function

Minda Chen
2023-09-27T10:09:18Z

For different interrupts to event num mapping function,
add get_events() function pointer.

Signed-off-by: Minda Chen <minda.chen@starfivetech.com>
---
drivers/pci/controller/plda/pcie-microchip-host.c | 14 +++++++++++++-
drivers/pci/controller/plda/pcie-plda.h | 2 ++
2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/controller/plda/pcie-microchip-host.c b/drivers/pci/controller/plda/pcie-microchip-host.c
index fb09b6c34e01..875bdb03ce22 100644
--- a/drivers/pci/controller/plda/pcie-microchip-host.c
+++ b/drivers/pci/controller/plda/pcie-microchip-host.c
@@ -646,7 +646,7 @@ static void plda_handle_event(struct irq_desc *desc)

chained_irq_enter(chip, desc);

- events = mc_get_events(port);
+ events = port->event_ops->get_events(port);

for_each_set_bit(bit, &events, port->num_events)
generic_handle_domain_irq(port->event_domain, bit);
@@ -805,7 +805,12 @@ static int mc_request_event_irq(struct plda_pcie_rp *plda, int event_irq,
0, event_cause[event].sym, plda);
}

+static const struct plda_event_ops mc_event_ops = {
+ .get_events = mc_get_events,
+};
+
static const struct plda_event mc_event = {
+ .event_ops = &mc_event_ops,
.request_event_irq = mc_request_event_irq,
.intx_event = EVENT_LOCAL_PM_MSI_INT_INTX,
.msi_event = EVENT_LOCAL_PM_MSI_INT_MSI,
@@ -919,6 +924,11 @@ static int plda_init_interrupts(struct platform_device *pdev,
int i, intx_irq, msi_irq, event_irq;
int ret;

+ if (!event->event_ops || !event->event_ops->get_events) {
+ dev_err(dev, "no get events ops\n");
+ return -EINVAL;
+ }
+
ret = plda_pcie_init_irq_domains(port);
if (ret) {
dev_err(dev, "failed creating IRQ domains\n");
@@ -929,6 +939,8 @@ static int plda_init_interrupts(struct platform_device *pdev,
if (irq < 0)
return -ENODEV;

+ port->event_ops = event->event_ops;
+
for (i = 0; i < port->num_events; i++) {
event_irq = irq_create_mapping(port->event_domain, i);
if (!event_irq) {
diff --git a/drivers/pci/controller/plda/pcie-plda.h b/drivers/pci/controller/plda/pcie-plda.h
index af5e69718342..48d7bc471137 100644
--- a/drivers/pci/controller/plda/pcie-plda.h
+++ b/drivers/pci/controller/plda/pcie-plda.h
@@ -149,11 +149,13 @@ struct plda_pcie_rp {
struct irq_domain *event_domain;
raw_spinlock_t lock;
struct plda_msi msi;
+ const struct plda_event_ops *event_ops;
void __iomem *bridge_addr;
int num_events;
};

struct plda_event {
+ const struct plda_event_ops *event_ops;
int (*request_event_irq)(struct plda_pcie_rp *pcie,
int event_irq, int event);
int intx_event;