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From:   Minda Chen <minda.chen@starfivetech.com>
To:     Conor Dooley <conor@kernel.org>,
        =?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= <kw@linux.com>,
        Rob Herring <robh+dt@kernel.org>,
        Bjorn Helgaas <bhelgaas@google.com>,
        Lorenzo Pieralisi <lpieralisi@kernel.org>,
        "Daire McNamara" <daire.mcnamara@microchip.com>,
        Emil Renner Berthing <emil.renner.berthing@canonical.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
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 v13 10/21] PCI: microchip: Rename interrupt related functions
Date:   Thu, 14 Dec 2023 15:28:28 +0800
Message-ID: <20231214072839.2367-11-minda.chen@starfivetech.com>
In-Reply-To: <20231214072839.2367-1-minda.chen@starfivetech.com>
References: <20231214072839.2367-1-minda.chen@starfivetech.com>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

Rename mc_* to plda_* for IRQ functions and related IRQ domain ops data
instances.

MSI, INTx interrupt codes and IRQ init codes are all can be re-used.

- function rename list:
  mc_allocate_msi_domains()  --> plda_allocate_msi_domains()
  mc_init_interrupts()       --> plda_init_interrupts()
  mc_pcie_init_irq_domain()  --> plda_pcie_init_irq_domains()
  mc_handle_event()          --> plda_handle_event()
  get_events()               --> mc_get_events()

  MSI interrupts related functions and IRQ domain
  (primary function is mc_handle_msi()):
    mc_handle_msi()          --> plda_handle_msi()
  INTx interrupts related functions and IRQ domain
  (primary function is mc_handle_intx()):
    mc_handle_intx()         --> plda_handle_intx()

Signed-off-by: Minda Chen <minda.chen@starfivetech.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
---
 .../pci/controller/plda/pcie-microchip-host.c | 112 +++++++++---------
 1 file changed, 59 insertions(+), 53 deletions(-)

diff --git a/drivers/pci/controller/plda/pcie-microchip-host.c b/drivers/pci/controller/plda/pcie-microchip-host.c
index 2e79bcc7c0a5..506e6eeadc76 100644
--- a/drivers/pci/controller/plda/pcie-microchip-host.c
+++ b/drivers/pci/controller/plda/pcie-microchip-host.c
@@ -318,7 +318,7 @@ static void mc_pcie_enable_msi(struct mc_pcie *port, void __iomem *ecam)
 		       ecam + MC_MSI_CAP_CTRL_OFFSET + PCI_MSI_ADDRESS_HI);
 }
 
-static void mc_handle_msi(struct irq_desc *desc)
+static void plda_handle_msi(struct irq_desc *desc)
 {
 	struct plda_pcie_rp *port = irq_desc_get_handler_data(desc);
 	struct irq_chip *chip = irq_desc_get_chip(desc);
@@ -333,7 +333,8 @@ static void mc_handle_msi(struct irq_desc *desc)
 
 	status = readl_relaxed(bridge_base_addr + ISTATUS_LOCAL);
 	if (status & PM_MSI_INT_MSI_MASK) {
-		writel_relaxed(status & PM_MSI_INT_MSI_MASK, bridge_base_addr + ISTATUS_LOCAL);
+		writel_relaxed(status & PM_MSI_INT_MSI_MASK,
+			       bridge_base_addr + ISTATUS_LOCAL);
 		status = readl_relaxed(bridge_base_addr + ISTATUS_MSI);
 		for_each_set_bit(bit, &status, msi->num_vectors) {
 			ret = generic_handle_domain_irq(msi->dev_domain, bit);
@@ -346,7 +347,7 @@ static void mc_handle_msi(struct irq_desc *desc)
 	chained_irq_exit(chip, desc);
 }
 
-static void mc_msi_bottom_irq_ack(struct irq_data *data)
+static void plda_msi_bottom_irq_ack(struct irq_data *data)
 {
 	struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
 	void __iomem *bridge_base_addr = port->bridge_addr;
@@ -355,7 +356,7 @@ static void mc_msi_bottom_irq_ack(struct irq_data *data)
 	writel_relaxed(BIT(bitpos), bridge_base_addr + ISTATUS_MSI);
 }
 
-static void mc_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
+static void plda_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
 {
 	struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
 	phys_addr_t addr = port->msi.vector_phy;
@@ -368,21 +369,23 @@ static void mc_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
 		(int)data->hwirq, msg->address_hi, msg->address_lo);
 }
 
-static int mc_msi_set_affinity(struct irq_data *irq_data,
-			       const struct cpumask *mask, bool force)
+static int plda_msi_set_affinity(struct irq_data *irq_data,
+				 const struct cpumask *mask, bool force)
 {
 	return -EINVAL;
 }
 
-static struct irq_chip mc_msi_bottom_irq_chip = {
-	.name = "Microchip MSI",
-	.irq_ack = mc_msi_bottom_irq_ack,
-	.irq_compose_msi_msg = mc_compose_msi_msg,
-	.irq_set_affinity = mc_msi_set_affinity,
+static struct irq_chip plda_msi_bottom_irq_chip = {
+	.name = "PLDA MSI",
+	.irq_ack = plda_msi_bottom_irq_ack,
+	.irq_compose_msi_msg = plda_compose_msi_msg,
+	.irq_set_affinity = plda_msi_set_affinity,
 };
 
-static int mc_irq_msi_domain_alloc(struct irq_domain *domain, unsigned int virq,
-				   unsigned int nr_irqs, void *args)
+static int plda_irq_msi_domain_alloc(struct irq_domain *domain,
+				     unsigned int virq,
+				     unsigned int nr_irqs,
+				     void *args)
 {
 	struct plda_pcie_rp *port = domain->host_data;
 	struct plda_msi *msi = &port->msi;
@@ -397,7 +400,7 @@ static int mc_irq_msi_domain_alloc(struct irq_domain *domain, unsigned int virq,
 
 	set_bit(bit, msi->used);
 
-	irq_domain_set_info(domain, virq, bit, &mc_msi_bottom_irq_chip,
+	irq_domain_set_info(domain, virq, bit, &plda_msi_bottom_irq_chip,
 			    domain->host_data, handle_edge_irq, NULL, NULL);
 
 	mutex_unlock(&msi->lock);
@@ -405,8 +408,9 @@ static int mc_irq_msi_domain_alloc(struct irq_domain *domain, unsigned int virq,
 	return 0;
 }
 
-static void mc_irq_msi_domain_free(struct irq_domain *domain, unsigned int virq,
-				   unsigned int nr_irqs)
+static void plda_irq_msi_domain_free(struct irq_domain *domain,
+				     unsigned int virq,
+				     unsigned int nr_irqs)
 {
 	struct irq_data *d = irq_domain_get_irq_data(domain, virq);
 	struct plda_pcie_rp *port = irq_data_get_irq_chip_data(d);
@@ -423,24 +427,24 @@ static void mc_irq_msi_domain_free(struct irq_domain *domain, unsigned int virq,
 }
 
 static const struct irq_domain_ops msi_domain_ops = {
-	.alloc	= mc_irq_msi_domain_alloc,
-	.free	= mc_irq_msi_domain_free,
+	.alloc	= plda_irq_msi_domain_alloc,
+	.free	= plda_irq_msi_domain_free,
 };
 
-static struct irq_chip mc_msi_irq_chip = {
-	.name = "Microchip PCIe MSI",
+static struct irq_chip plda_msi_irq_chip = {
+	.name = "PLDA PCIe MSI",
 	.irq_ack = irq_chip_ack_parent,
 	.irq_mask = pci_msi_mask_irq,
 	.irq_unmask = pci_msi_unmask_irq,
 };
 
-static struct msi_domain_info mc_msi_domain_info = {
+static struct msi_domain_info plda_msi_domain_info = {
 	.flags = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
 		  MSI_FLAG_PCI_MSIX),
-	.chip = &mc_msi_irq_chip,
+	.chip = &plda_msi_irq_chip,
 };
 
-static int mc_allocate_msi_domains(struct plda_pcie_rp *port)
+static int plda_allocate_msi_domains(struct plda_pcie_rp *port)
 {
 	struct device *dev = port->dev;
 	struct fwnode_handle *fwnode = of_node_to_fwnode(dev->of_node);
@@ -455,7 +459,8 @@ static int mc_allocate_msi_domains(struct plda_pcie_rp *port)
 		return -ENOMEM;
 	}
 
-	msi->msi_domain = pci_msi_create_irq_domain(fwnode, &mc_msi_domain_info,
+	msi->msi_domain = pci_msi_create_irq_domain(fwnode,
+						    &plda_msi_domain_info,
 						    msi->dev_domain);
 	if (!msi->msi_domain) {
 		dev_err(dev, "failed to create MSI domain\n");
@@ -466,7 +471,7 @@ static int mc_allocate_msi_domains(struct plda_pcie_rp *port)
 	return 0;
 }
 
-static void mc_handle_intx(struct irq_desc *desc)
+static void plda_handle_intx(struct irq_desc *desc)
 {
 	struct plda_pcie_rp *port = irq_desc_get_handler_data(desc);
 	struct irq_chip *chip = irq_desc_get_chip(desc);
@@ -493,7 +498,7 @@ static void mc_handle_intx(struct irq_desc *desc)
 	chained_irq_exit(chip, desc);
 }
 
-static void mc_ack_intx_irq(struct irq_data *data)
+static void plda_ack_intx_irq(struct irq_data *data)
 {
 	struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
 	void __iomem *bridge_base_addr = port->bridge_addr;
@@ -502,7 +507,7 @@ static void mc_ack_intx_irq(struct irq_data *data)
 	writel_relaxed(mask, bridge_base_addr + ISTATUS_LOCAL);
 }
 
-static void mc_mask_intx_irq(struct irq_data *data)
+static void plda_mask_intx_irq(struct irq_data *data)
 {
 	struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
 	void __iomem *bridge_base_addr = port->bridge_addr;
@@ -517,7 +522,7 @@ static void mc_mask_intx_irq(struct irq_data *data)
 	raw_spin_unlock_irqrestore(&port->lock, flags);
 }
 
-static void mc_unmask_intx_irq(struct irq_data *data)
+static void plda_unmask_intx_irq(struct irq_data *data)
 {
 	struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
 	void __iomem *bridge_base_addr = port->bridge_addr;
@@ -532,24 +537,24 @@ static void mc_unmask_intx_irq(struct irq_data *data)
 	raw_spin_unlock_irqrestore(&port->lock, flags);
 }
 
-static struct irq_chip mc_intx_irq_chip = {
-	.name = "Microchip PCIe INTx",
-	.irq_ack = mc_ack_intx_irq,
-	.irq_mask = mc_mask_intx_irq,
-	.irq_unmask = mc_unmask_intx_irq,
+static struct irq_chip plda_intx_irq_chip = {
+	.name = "PLDA PCIe INTx",
+	.irq_ack = plda_ack_intx_irq,
+	.irq_mask = plda_mask_intx_irq,
+	.irq_unmask = plda_unmask_intx_irq,
 };
 
-static int mc_pcie_intx_map(struct irq_domain *domain, unsigned int irq,
-			    irq_hw_number_t hwirq)
+static int plda_pcie_intx_map(struct irq_domain *domain, unsigned int irq,
+			      irq_hw_number_t hwirq)
 {
-	irq_set_chip_and_handler(irq, &mc_intx_irq_chip, handle_level_irq);
+	irq_set_chip_and_handler(irq, &plda_intx_irq_chip, handle_level_irq);
 	irq_set_chip_data(irq, domain->host_data);
 
 	return 0;
 }
 
 static const struct irq_domain_ops intx_domain_ops = {
-	.map = mc_pcie_intx_map,
+	.map = plda_pcie_intx_map,
 };
 
 static inline u32 reg_to_event(u32 reg, struct event_map field)
@@ -609,7 +614,7 @@ static u32 local_events(struct mc_pcie *port)
 	return val;
 }
 
-static u32 get_events(struct plda_pcie_rp *port)
+static u32 mc_get_events(struct plda_pcie_rp *port)
 {
 	struct mc_pcie *mc_port = container_of(port, struct mc_pcie, plda);
 	u32 events = 0;
@@ -638,7 +643,7 @@ static irqreturn_t mc_event_handler(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static void mc_handle_event(struct irq_desc *desc)
+static void plda_handle_event(struct irq_desc *desc)
 {
 	struct plda_pcie_rp *port = irq_desc_get_handler_data(desc);
 	unsigned long events;
@@ -647,7 +652,7 @@ static void mc_handle_event(struct irq_desc *desc)
 
 	chained_irq_enter(chip, desc);
 
-	events = get_events(port);
+	events = mc_get_events(port);
 
 	for_each_set_bit(bit, &events, NUM_EVENTS)
 		generic_handle_domain_irq(port->event_domain, bit);
@@ -741,8 +746,8 @@ static struct irq_chip mc_event_irq_chip = {
 	.irq_unmask = mc_unmask_event_irq,
 };
 
-static int mc_pcie_event_map(struct irq_domain *domain, unsigned int irq,
-			     irq_hw_number_t hwirq)
+static int plda_pcie_event_map(struct irq_domain *domain, unsigned int irq,
+			       irq_hw_number_t hwirq)
 {
 	irq_set_chip_and_handler(irq, &mc_event_irq_chip, handle_level_irq);
 	irq_set_chip_data(irq, domain->host_data);
@@ -750,8 +755,8 @@ static int mc_pcie_event_map(struct irq_domain *domain, unsigned int irq,
 	return 0;
 }
 
-static const struct irq_domain_ops event_domain_ops = {
-	.map = mc_pcie_event_map,
+static const struct irq_domain_ops plda_event_domain_ops = {
+	.map = plda_pcie_event_map,
 };
 
 static inline void mc_pcie_deinit_clk(void *data)
@@ -799,7 +804,7 @@ static int mc_pcie_init_clks(struct device *dev)
 	return 0;
 }
 
-static int mc_pcie_init_irq_domains(struct plda_pcie_rp *port)
+static int plda_pcie_init_irq_domains(struct plda_pcie_rp *port)
 {
 	struct device *dev = port->dev;
 	struct device_node *node = dev->of_node;
@@ -813,7 +818,8 @@ static int mc_pcie_init_irq_domains(struct plda_pcie_rp *port)
 	}
 
 	port->event_domain = irq_domain_add_linear(pcie_intc_node, NUM_EVENTS,
-						   &event_domain_ops, port);
+						   &plda_event_domain_ops,
+						   port);
 	if (!port->event_domain) {
 		dev_err(dev, "failed to get event domain\n");
 		of_node_put(pcie_intc_node);
@@ -835,7 +841,7 @@ static int mc_pcie_init_irq_domains(struct plda_pcie_rp *port)
 	of_node_put(pcie_intc_node);
 	raw_spin_lock_init(&port->lock);
 
-	return mc_allocate_msi_domains(port);
+	return plda_allocate_msi_domains(port);
 }
 
 static inline void mc_clear_secs(struct mc_pcie *port)
@@ -898,14 +904,14 @@ static void mc_disable_interrupts(struct mc_pcie *port)
 	writel_relaxed(GENMASK(31, 0), bridge_base_addr + ISTATUS_HOST);
 }
 
-static int mc_init_interrupts(struct platform_device *pdev, struct plda_pcie_rp *port)
+static int plda_init_interrupts(struct platform_device *pdev, struct plda_pcie_rp *port)
 {
 	struct device *dev = &pdev->dev;
 	int irq;
 	int i, intx_irq, msi_irq, event_irq;
 	int ret;
 
-	ret = mc_pcie_init_irq_domains(port);
+	ret = plda_pcie_init_irq_domains(port);
 	if (ret) {
 		dev_err(dev, "failed creating IRQ domains\n");
 		return ret;
@@ -938,7 +944,7 @@ static int mc_init_interrupts(struct platform_device *pdev, struct plda_pcie_rp
 	}
 
 	/* Plug the INTx chained handler */
-	irq_set_chained_handler_and_data(intx_irq, mc_handle_intx, port);
+	irq_set_chained_handler_and_data(intx_irq, plda_handle_intx, port);
 
 	msi_irq = irq_create_mapping(port->event_domain,
 				     EVENT_LOCAL_PM_MSI_INT_MSI);
@@ -946,10 +952,10 @@ static int mc_init_interrupts(struct platform_device *pdev, struct plda_pcie_rp
 		return -ENXIO;
 
 	/* Plug the MSI chained handler */
-	irq_set_chained_handler_and_data(msi_irq, mc_handle_msi, port);
+	irq_set_chained_handler_and_data(msi_irq, plda_handle_msi, port);
 
 	/* Plug the main event chained handler */
-	irq_set_chained_handler_and_data(irq, mc_handle_event, port);
+	irq_set_chained_handler_and_data(irq, plda_handle_event, port);
 
 	return 0;
 }
@@ -977,7 +983,7 @@ static int mc_platform_init(struct pci_config_window *cfg)
 		return ret;
 
 	/* Address translation is up; safe to enable interrupts */
-	ret = mc_init_interrupts(pdev, &port->plda);
+	ret = plda_init_interrupts(pdev, &port->plda);
 	if (ret)
 		return ret;
 
-- 
2.17.1