Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 97 insertions, 0 deletions

diff --git a/arch/mips/pci/fixup-emma2rh.c b/arch/mips/pci/fixup-emma2rh.c
new file mode 100644
index 000000000..c31cb6af1
--- /dev/null
+++ b/arch/mips/pci/fixup-emma2rh.c
@@ -0,0 +1,97 @@
+/*
+ *  Copyright (C) NEC Electronics Corporation 2004-2006
+ *
+ *  This file is based on the arch/mips/ddb5xxx/ddb5477/pci.c
+ *
+ *	Copyright 2001 MontaVista Software Inc.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+
+#include <asm/bootinfo.h>
+
+#include <asm/emma/emma2rh.h>
+
+#define EMMA2RH_PCI_HOST_SLOT 0x09
+#define EMMA2RH_USB_SLOT 0x03
+#define PCI_DEVICE_ID_NEC_EMMA2RH      0x014b /* EMMA2RH PCI Host */
+
+/*
+ * we fix up irqs based on the slot number.
+ * The first entry is at AD:11.
+ * Fortunately this works because, although we have two pci buses,
+ * they all have different slot numbers (except for rockhopper slot 20
+ * which is handled below).
+ *
+ */
+
+#define MAX_SLOT_NUM 10
+static unsigned char irq_map[][5] = {
+	[3] = {0, MARKEINS_PCI_IRQ_INTB, MARKEINS_PCI_IRQ_INTC,
+	       MARKEINS_PCI_IRQ_INTD, 0,},
+	[4] = {0, MARKEINS_PCI_IRQ_INTA, 0, 0, 0,},
+	[5] = {0, 0, 0, 0, 0,},
+	[6] = {0, MARKEINS_PCI_IRQ_INTC, MARKEINS_PCI_IRQ_INTD,
+	       MARKEINS_PCI_IRQ_INTA, MARKEINS_PCI_IRQ_INTB,},
+};
+
+static void nec_usb_controller_fixup(struct pci_dev *dev)
+{
+	if (PCI_SLOT(dev->devfn) == EMMA2RH_USB_SLOT)
+		/* on board USB controller configuration */
+		pci_write_config_dword(dev, 0xe4, 1 << 5);
+}
+
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB,
+			nec_usb_controller_fixup);
+
+/*
+ * Prevent the PCI layer from seeing the resources allocated to this device
+ * if it is the host bridge by marking it as such.  These resources are of
+ * no consequence to the PCI layer (they are handled elsewhere).
+ */
+static void emma2rh_pci_host_fixup(struct pci_dev *dev)
+{
+	int i;
+
+	if (PCI_SLOT(dev->devfn) == EMMA2RH_PCI_HOST_SLOT) {
+		dev->class &= 0xff;
+		dev->class |= PCI_CLASS_BRIDGE_HOST << 8;
+		for (i = 0; i < PCI_NUM_RESOURCES; i++) {
+			dev->resource[i].start = 0;
+			dev->resource[i].end = 0;
+			dev->resource[i].flags = 0;
+		}
+	}
+}
+
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_EMMA2RH,
+			 emma2rh_pci_host_fixup);
+
+int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+	return irq_map[slot][pin];
+}
+
+/* Do platform specific device initialization at pci_enable_device() time */
+int pcibios_plat_dev_init(struct pci_dev *dev)
+{
+	return 0;
+}