openwrt/target/linux/starfive/patches-6.6/0030-pci-plda-Add-event-bitmap-field-to-struct-plda_pcie_.patch

From 142fc300fd7511a217783dcfa342031d8ad70188 Mon Sep 17 00:00:00 2001
From: Minda Chen <minda.chen@starfivetech.com>
Date: Mon, 8 Jan 2024 19:06:07 +0800
Subject: [PATCH 030/116] pci: plda: Add event bitmap field to struct
 plda_pcie_rp

For PLDA DMA interrupts are not all implemented. The non-implemented
interrupts should be masked. So add a bitmap field to mask the non-
implemented interrupts.

Signed-off-by: Minda Chen <minda.chen@starfivetech.com>
---
 drivers/pci/controller/plda/pcie-microchip-host.c | 1 +
 drivers/pci/controller/plda/pcie-plda-host.c      | 6 ++++--
 drivers/pci/controller/plda/pcie-plda.h           | 1 +
 3 files changed, 6 insertions(+), 2 deletions(-)

--- a/drivers/pci/controller/plda/pcie-microchip-host.c
+++ b/drivers/pci/controller/plda/pcie-microchip-host.c
@@ -636,6 +636,7 @@ static int mc_platform_init(struct pci_c
 
 	port->plda.event_ops = &mc_event_ops;
 	port->plda.event_irq_chip = &mc_event_irq_chip;
+	port->plda.events_bitmap = GENMASK(NUM_EVENTS - 1, 0);
 
 	/* Address translation is up; safe to enable interrupts */
 	ret = plda_init_interrupts(pdev, &port->plda, &mc_event);
--- a/drivers/pci/controller/plda/pcie-plda-host.c
+++ b/drivers/pci/controller/plda/pcie-plda-host.c
@@ -290,6 +290,7 @@ static void plda_handle_event(struct irq
 
 	events = port->event_ops->get_events(port);
 
+	events &= port->events_bitmap;
 	for_each_set_bit(bit, &events, port->num_events)
 		generic_handle_domain_irq(port->event_domain, bit);
 
@@ -420,8 +421,9 @@ int plda_init_interrupts(struct platform
 {
 	struct device *dev = &pdev->dev;
 	int irq;
-	int i, intx_irq, msi_irq, event_irq;
+	int intx_irq, msi_irq, event_irq;
 	int ret;
+	u32 i;
 
 	if (!port->event_ops)
 		port->event_ops = &plda_event_ops;
@@ -439,7 +441,7 @@ int plda_init_interrupts(struct platform
 	if (irq < 0)
 		return -ENODEV;
 
-	for (i = 0; i < port->num_events; i++) {
+	for_each_set_bit(i, &port->events_bitmap, port->num_events) {
 		event_irq = irq_create_mapping(port->event_domain, i);
 		if (!event_irq) {
 			dev_err(dev, "failed to map hwirq %d\n", i);
--- a/drivers/pci/controller/plda/pcie-plda.h
+++ b/drivers/pci/controller/plda/pcie-plda.h
@@ -159,6 +159,7 @@ struct plda_pcie_rp {
 	const struct plda_event_ops *event_ops;
 	const struct irq_chip *event_irq_chip;
 	void __iomem *bridge_addr;
+	unsigned long events_bitmap;
 	int num_events;
 };