[PATCH v16 04/22] PCI: microchip: Add bridge_addr field to struct mc_pcie

From: Minda Chen <minda.chen@starfivetech.com>
To: "Lorenzo Pieralisi" <lpieralisi@kernel.org>,
	"Conor Dooley" <conor@kernel.org>,
	"Krzysztof Wilczyński" <kw@linux.com>,
	"Rob Herring" <robh+dt@kernel.org>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	"Thomas Gleixner" <tglx@linutronix.de>,
	"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 v16 04/22] PCI: microchip: Add bridge_addr field to struct mc_pcie
Date: Thu, 28 Mar 2024 17:18:17 +0800	[thread overview]
Message-ID: <20240328091835.14797-5-minda.chen@starfivetech.com> (raw)
In-Reply-To: <20240328091835.14797-1-minda.chen@starfivetech.com>

Bridge address base is common PLDA field, add this to struct mc_pcie
first.

INTx and MSI interrupt code will be changed to common code, so get
the bridge base address from port->bridge_addr instead of
axi_base_addr. axi_base_addr is Microchip its own data.

Signed-off-by: Minda Chen <minda.chen@starfivetech.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
---
 .../pci/controller/plda/pcie-microchip-host.c | 23 ++++++++-----------
 1 file changed, 9 insertions(+), 14 deletions(-)

diff --git a/drivers/pci/controller/plda/pcie-microchip-host.c b/drivers/pci/controller/plda/pcie-microchip-host.c
index d9030d550482..c55ede80a6d0 100644
--- a/drivers/pci/controller/plda/pcie-microchip-host.c
+++ b/drivers/pci/controller/plda/pcie-microchip-host.c
@@ -195,6 +195,7 @@ struct mc_pcie {
 	struct irq_domain *event_domain;
 	raw_spinlock_t lock;
 	struct mc_msi msi;
+	void __iomem *bridge_addr;
 };
 
 struct cause {
@@ -339,8 +340,7 @@ static void mc_handle_msi(struct irq_desc *desc)
 	struct irq_chip *chip = irq_desc_get_chip(desc);
 	struct device *dev = port->dev;
 	struct mc_msi *msi = &port->msi;
-	void __iomem *bridge_base_addr =
-		port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
+	void __iomem *bridge_base_addr = port->bridge_addr;
 	unsigned long status;
 	u32 bit;
 	int ret;
@@ -365,8 +365,7 @@ static void mc_handle_msi(struct irq_desc *desc)
 static void mc_msi_bottom_irq_ack(struct irq_data *data)
 {
 	struct mc_pcie *port = irq_data_get_irq_chip_data(data);
-	void __iomem *bridge_base_addr =
-		port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
+	void __iomem *bridge_base_addr = port->bridge_addr;
 	u32 bitpos = data->hwirq;
 
 	writel_relaxed(BIT(bitpos), bridge_base_addr + ISTATUS_MSI);
@@ -488,8 +487,7 @@ static void mc_handle_intx(struct irq_desc *desc)
 	struct mc_pcie *port = irq_desc_get_handler_data(desc);
 	struct irq_chip *chip = irq_desc_get_chip(desc);
 	struct device *dev = port->dev;
-	void __iomem *bridge_base_addr =
-		port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
+	void __iomem *bridge_base_addr = port->bridge_addr;
 	unsigned long status;
 	u32 bit;
 	int ret;
@@ -514,8 +512,7 @@ static void mc_handle_intx(struct irq_desc *desc)
 static void mc_ack_intx_irq(struct irq_data *data)
 {
 	struct mc_pcie *port = irq_data_get_irq_chip_data(data);
-	void __iomem *bridge_base_addr =
-		port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
+	void __iomem *bridge_base_addr = port->bridge_addr;
 	u32 mask = BIT(data->hwirq + PM_MSI_INT_INTX_SHIFT);
 
 	writel_relaxed(mask, bridge_base_addr + ISTATUS_LOCAL);
@@ -524,8 +521,7 @@ static void mc_ack_intx_irq(struct irq_data *data)
 static void mc_mask_intx_irq(struct irq_data *data)
 {
 	struct mc_pcie *port = irq_data_get_irq_chip_data(data);
-	void __iomem *bridge_base_addr =
-		port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
+	void __iomem *bridge_base_addr = port->bridge_addr;
 	unsigned long flags;
 	u32 mask = BIT(data->hwirq + PM_MSI_INT_INTX_SHIFT);
 	u32 val;
@@ -540,8 +536,7 @@ static void mc_mask_intx_irq(struct irq_data *data)
 static void mc_unmask_intx_irq(struct irq_data *data)
 {
 	struct mc_pcie *port = irq_data_get_irq_chip_data(data);
-	void __iomem *bridge_base_addr =
-		port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
+	void __iomem *bridge_base_addr = port->bridge_addr;
 	unsigned long flags;
 	u32 mask = BIT(data->hwirq + PM_MSI_INT_INTX_SHIFT);
 	u32 val;
@@ -896,8 +891,7 @@ static void mc_pcie_setup_window(void __iomem *bridge_base_addr, u32 index,
 static int mc_pcie_setup_windows(struct platform_device *pdev,
 				 struct mc_pcie *port)
 {
-	void __iomem *bridge_base_addr =
-		port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
+	void __iomem *bridge_base_addr = port->bridge_addr;
 	struct pci_host_bridge *bridge = platform_get_drvdata(pdev);
 	struct resource_entry *entry;
 	u64 pci_addr;
@@ -1081,6 +1075,7 @@ static int mc_host_probe(struct platform_device *pdev)
 	mc_disable_interrupts(port);
 
 	bridge_base_addr = port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
+	port->bridge_addr = bridge_base_addr;
 
 	/* Allow enabling MSI by disabling MSI-X */
 	val = readl(bridge_base_addr + PCIE_PCI_IRQ_DW0);
-- 
2.17.1


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