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From: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= <ilpo.jarvinen@linux.intel.com>
To: linux-pci@vger.kernel.org,
	Bjorn Helgaas <bhelgaas@google.com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	Rob Herring <robh@kernel.org>,
	=?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= <kw@linux.com>,
	Andrew Lunn <andrew@lunn.ch>,
	Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
	Gregory Clement <gregory.clement@bootlin.com>,
	Russell King <linux@armlinux.org.uk>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Cc: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= <ilpo.jarvinen@linux.intel.com>
Subject: [PATCH 03/10] ARM: orion5x: Pass devfn to orion5x_pci_hw_{rd,wr}_conf()
Date: Mon, 29 Apr 2024 13:46:26 +0300
Message-Id: <20240429104633.11060-4-ilpo.jarvinen@linux.intel.com>
In-Reply-To: <20240429104633.11060-1-ilpo.jarvinen@linux.intel.com>
References: <20240429104633.11060-1-ilpo.jarvinen@linux.intel.com>
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Pass the usual devfn instead of individual components into
orion5x_pci_hw_{rd,wr}_conf() to make the change into
pci_conf1_offset() in an upcoming commit easier.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
 arch/arm/mach-orion5x/pci.c | 45 +++++++++++++++++++------------------
 1 file changed, 23 insertions(+), 22 deletions(-)

diff --git a/arch/arm/mach-orion5x/pci.c b/arch/arm/mach-orion5x/pci.c
index 77ddab90f448..6376e1db6386 100644
--- a/arch/arm/mach-orion5x/pci.c
+++ b/arch/arm/mach-orion5x/pci.c
@@ -270,15 +270,15 @@ static int orion5x_pci_local_bus_nr(void)
 	return((conf & PCI_P2P_BUS_MASK) >> PCI_P2P_BUS_OFFS);
 }
 
-static int orion5x_pci_hw_rd_conf(int bus, int dev, u32 func,
-					u32 where, u32 size, u32 *val)
+static int orion5x_pci_hw_rd_conf(int bus, u8 devfn, u32 where,
+				  u32 size, u32 *val)
 {
 	unsigned long flags;
 	spin_lock_irqsave(&orion5x_pci_lock, flags);
 
 	writel(PCI_CONF_BUS(bus) |
-		PCI_CONF_DEV(dev) | ORION5X_PCI_CONF_REG(where) |
-		ORION5X_PCI_CONF_FUNC(func) | PCI_CONF_ADDR_EN, PCI_CONF_ADDR);
+		PCI_CONF_DEV(PCI_SLOT(devfn)) | ORION5X_PCI_CONF_REG(where) |
+		ORION5X_PCI_CONF_FUNC(PCI_FUNC(devfn)) | PCI_CONF_ADDR_EN, PCI_CONF_ADDR);
 
 	*val = readl(PCI_CONF_DATA);
 
@@ -292,8 +292,8 @@ static int orion5x_pci_hw_rd_conf(int bus, int dev, u32 func,
 	return PCIBIOS_SUCCESSFUL;
 }
 
-static int orion5x_pci_hw_wr_conf(int bus, int dev, u32 func,
-					u32 where, u32 size, u32 val)
+static int orion5x_pci_hw_wr_conf(int bus, u8 devfn, u32 where,
+				  u32 size, u32 val)
 {
 	unsigned long flags;
 	int ret = PCIBIOS_SUCCESSFUL;
@@ -301,8 +301,8 @@ static int orion5x_pci_hw_wr_conf(int bus, int dev, u32 func,
 	spin_lock_irqsave(&orion5x_pci_lock, flags);
 
 	writel(PCI_CONF_BUS(bus) |
-		PCI_CONF_DEV(dev) | ORION5X_PCI_CONF_REG(where) |
-		ORION5X_PCI_CONF_FUNC(func) | PCI_CONF_ADDR_EN, PCI_CONF_ADDR);
+		PCI_CONF_DEV(PCI_SLOT(devfn)) | ORION5X_PCI_CONF_REG(where) |
+		ORION5X_PCI_CONF_FUNC(PCI_FUNC(devfn)) | PCI_CONF_ADDR_EN, PCI_CONF_ADDR);
 
 	if (size == 4) {
 		__raw_writel(val, PCI_CONF_DATA);
@@ -347,8 +347,7 @@ static int orion5x_pci_rd_conf(struct pci_bus *bus, u32 devfn,
 		return PCIBIOS_DEVICE_NOT_FOUND;
 	}
 
-	return orion5x_pci_hw_rd_conf(bus->number, PCI_SLOT(devfn),
-					PCI_FUNC(devfn), where, size, val);
+	return orion5x_pci_hw_rd_conf(bus->number, devfn, where, size, val);
 }
 
 static int orion5x_pci_wr_conf(struct pci_bus *bus, u32 devfn,
@@ -357,8 +356,7 @@ static int orion5x_pci_wr_conf(struct pci_bus *bus, u32 devfn,
 	if (!orion5x_pci_valid_config(bus->number, devfn))
 		return PCIBIOS_DEVICE_NOT_FOUND;
 
-	return orion5x_pci_hw_wr_conf(bus->number, PCI_SLOT(devfn),
-					PCI_FUNC(devfn), where, size, val);
+	return orion5x_pci_hw_wr_conf(bus->number, devfn, where, size, val);
 }
 
 static struct pci_ops pci_ops = {
@@ -375,12 +373,14 @@ static void __init orion5x_pci_set_bus_nr(int nr)
 		 * PCI-X mode
 		 */
 		u32 pcix_status, bus, dev;
+		u8 devfn;
 		bus = (p2p & PCI_P2P_BUS_MASK) >> PCI_P2P_BUS_OFFS;
 		dev = (p2p & PCI_P2P_DEV_MASK) >> PCI_P2P_DEV_OFFS;
-		orion5x_pci_hw_rd_conf(bus, dev, 0, PCIX_STAT, 4, &pcix_status);
+		devfn = PCI_DEVFN(dev, 0);
+		orion5x_pci_hw_rd_conf(bus, devfn, PCIX_STAT, 4, &pcix_status);
 		pcix_status &= ~PCIX_STAT_BUS_MASK;
 		pcix_status |= (nr << PCIX_STAT_BUS_OFFS);
-		orion5x_pci_hw_wr_conf(bus, dev, 0, PCIX_STAT, 4, pcix_status);
+		orion5x_pci_hw_wr_conf(bus, devfn, PCIX_STAT, 4, pcix_status);
 	} else {
 		/*
 		 * PCI Conventional mode
@@ -393,15 +393,16 @@ static void __init orion5x_pci_set_bus_nr(int nr)
 
 static void __init orion5x_pci_master_slave_enable(void)
 {
-	int bus_nr, func, reg;
+	int bus_nr, reg;
+	u8 devfn;
 	u32 val;
 
 	bus_nr = orion5x_pci_local_bus_nr();
-	func = PCI_CONF_FUNC_STAT_CMD;
+	devfn = PCI_DEVFN(0, PCI_CONF_FUNC_STAT_CMD);
 	reg = PCI_CONF_REG_STAT_CMD;
-	orion5x_pci_hw_rd_conf(bus_nr, 0, func, reg, 4, &val);
+	orion5x_pci_hw_rd_conf(bus_nr, devfn, reg, 4, &val);
 	val |= (PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
-	orion5x_pci_hw_wr_conf(bus_nr, 0, func, reg, 4, val | 0x7);
+	orion5x_pci_hw_wr_conf(bus_nr, devfn, reg, 4, val | 0x7);
 }
 
 static void __init orion5x_setup_pci_wins(void)
@@ -424,7 +425,7 @@ static void __init orion5x_setup_pci_wins(void)
 
 	for (i = 0; i < dram->num_cs; i++) {
 		const struct mbus_dram_window *cs = dram->cs + i;
-		u32 func = PCI_CONF_FUNC_BAR_CS(cs->cs_index);
+		u8 devfn = PCI_DEVFN(0, PCI_CONF_FUNC_BAR_CS(cs->cs_index));
 		u32 reg;
 		u32 val;
 
@@ -432,15 +433,15 @@ static void __init orion5x_setup_pci_wins(void)
 		 * Write DRAM bank base address register.
 		 */
 		reg = PCI_CONF_REG_BAR_LO_CS(cs->cs_index);
-		orion5x_pci_hw_rd_conf(bus, 0, func, reg, 4, &val);
+		orion5x_pci_hw_rd_conf(bus, devfn, reg, 4, &val);
 		val = (cs->base & 0xfffff000) | (val & 0xfff);
-		orion5x_pci_hw_wr_conf(bus, 0, func, reg, 4, val);
+		orion5x_pci_hw_wr_conf(bus, devfn, reg, 4, val);
 
 		/*
 		 * Write DRAM bank size register.
 		 */
 		reg = PCI_CONF_REG_BAR_HI_CS(cs->cs_index);
-		orion5x_pci_hw_wr_conf(bus, 0, func, reg, 4, 0);
+		orion5x_pci_hw_wr_conf(bus, devfn, reg, 4, 0);
 		writel((cs->size - 1) & 0xfffff000,
 			PCI_BAR_SIZE_DDR_CS(cs->cs_index));
 		writel(cs->base & 0xfffff000,
-- 
2.39.2