From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 20:49:45 +0200
Subject: Adding upstream version 6.1.76.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 arch/arm/mach-footbridge/netwinder-pci.c | 62 ++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 arch/arm/mach-footbridge/netwinder-pci.c

(limited to 'arch/arm/mach-footbridge/netwinder-pci.c')

diff --git a/arch/arm/mach-footbridge/netwinder-pci.c b/arch/arm/mach-footbridge/netwinder-pci.c
new file mode 100644
index 000000000..e83043920
--- /dev/null
+++ b/arch/arm/mach-footbridge/netwinder-pci.c
@@ -0,0 +1,62 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * linux/arch/arm/mach-footbridge/netwinder-pci.c
+ *
+ * PCI bios-type initialisation for PCI machines
+ *
+ * Bits taken from various places.
+ */
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+
+#include <asm/irq.h>
+#include <asm/mach/pci.h>
+#include <asm/mach-types.h>
+
+/*
+ * We now use the slot ID instead of the device identifiers to select
+ * which interrupt is routed where.
+ */
+static int netwinder_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+	switch (slot) {
+	case 0:  /* host bridge */
+		return 0;
+
+	case 9:  /* CyberPro */
+		return IRQ_NETWINDER_VGA;
+
+	case 10: /* DC21143 */
+		return IRQ_NETWINDER_ETHER100;
+
+	case 12: /* Winbond 553 */
+		return IRQ_ISA_HARDDISK1;
+
+	case 13: /* Winbond 89C940F */
+		return IRQ_NETWINDER_ETHER10;
+
+	default:
+		printk(KERN_ERR "PCI: unknown device in slot %s\n",
+			pci_name(dev));
+		return 0;
+	}
+}
+
+static struct hw_pci netwinder_pci __initdata = {
+	.map_irq		= netwinder_map_irq,
+	.nr_controllers		= 1,
+	.ops			= &dc21285_ops,
+	.setup			= dc21285_setup,
+	.preinit		= dc21285_preinit,
+	.postinit		= dc21285_postinit,
+};
+
+static int __init netwinder_pci_init(void)
+{
+	if (machine_is_netwinder())
+		pci_common_init(&netwinder_pci);
+	return 0;
+}
+
+subsys_initcall(netwinder_pci_init);
-- 
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