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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/arm/mach-footbridge/netwinder-pci.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/mach-footbridge/netwinder-pci.c')
-rw-r--r--arch/arm/mach-footbridge/netwinder-pci.c62
1 files changed, 62 insertions, 0 deletions
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);