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From:   Minda Chen <minda.chen@starfivetech.com>
To:     Daire McNamara <daire.mcnamara@microchip.com>,
        Conor Dooley <conor@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Bjorn Helgaas <bhelgaas@google.com>,
        Lorenzo Pieralisi <lpieralisi@kernel.org>,
        =?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= <kw@linux.com>,
        Emil Renner Berthing <emil.renner.berthing@canonical.com>
CC:     <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <linux-riscv@lists.infradead.org>, <linux-pci@vger.kernel.org>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Albert Ou <aou@eecs.berkeley.edu>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        Mason Huo <mason.huo@starfivetech.com>,
        Leyfoon Tan <leyfoon.tan@starfivetech.com>,
        Kevin Xie <kevin.xie@starfivetech.com>,
        Minda Chen <minda.chen@starfivetech.com>
Subject: [PATCH v7 13/19] PCI: microchip: Add get_events() callback function
Date:   Wed, 27 Sep 2023 18:07:56 +0800
Message-ID: <20230927100802.46620-14-minda.chen@starfivetech.com>
In-Reply-To: <20230927100802.46620-1-minda.chen@starfivetech.com>
References: <20230927100802.46620-1-minda.chen@starfivetech.com>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

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;
-- 
2.17.1