From 849369d6c66d3054688672f97d31fceb8e8230fb Mon Sep 17 00:00:00 2001
From: root <root@artemis.panaceas.org>
Date: Fri, 25 Dec 2015 04:40:36 +0000
Subject: initial_commit

---
 arch/arm/mach-ixp2000/ixdp2400.c | 179 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 179 insertions(+)
 create mode 100644 arch/arm/mach-ixp2000/ixdp2400.c

(limited to 'arch/arm/mach-ixp2000/ixdp2400.c')

diff --git a/arch/arm/mach-ixp2000/ixdp2400.c b/arch/arm/mach-ixp2000/ixdp2400.c
new file mode 100644
index 00000000..dfffc1e8
--- /dev/null
+++ b/arch/arm/mach-ixp2000/ixdp2400.c
@@ -0,0 +1,179 @@
+/*
+ * arch/arm/mach-ixp2000/ixdp2400.c
+ *
+ * IXDP2400 platform support
+ *
+ * Original Author: Naeem Afzal <naeem.m.afzal@intel.com>
+ * Maintainer: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * Copyright (C) 2002 Intel Corp.
+ * Copyright (C) 2003-2004 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.
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/device.h>
+#include <linux/bitops.h>
+#include <linux/pci.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+
+#include <asm/irq.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <asm/system.h>
+#include <mach/hardware.h>
+#include <asm/mach-types.h>
+
+#include <asm/mach/pci.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/time.h>
+#include <asm/mach/flash.h>
+#include <asm/mach/arch.h>
+
+/*************************************************************************
+ * IXDP2400 timer tick
+ *************************************************************************/
+static void __init ixdp2400_timer_init(void)
+{
+	int numerator, denominator;
+	int denom_array[] = {2, 4, 8, 16, 1, 2, 4, 8};
+
+	numerator = (*(IXDP2400_CPLD_SYS_CLK_M) & 0xFF) *2;
+	denominator = denom_array[(*(IXDP2400_CPLD_SYS_CLK_N) & 0x7)];
+
+	ixp2000_init_time(((3125000 * numerator) / (denominator)) / 2);
+}
+
+static struct sys_timer ixdp2400_timer = {
+	.init		= ixdp2400_timer_init,
+	.offset		= ixp2000_gettimeoffset,
+};
+
+/*************************************************************************
+ * IXDP2400 PCI
+ *************************************************************************/
+void __init ixdp2400_pci_preinit(void)
+{
+	ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00100000);
+	ixp2000_pci_preinit();
+	pcibios_setup("firmware");
+}
+
+int ixdp2400_pci_setup(int nr, struct pci_sys_data *sys)
+{
+	sys->mem_offset = 0xe0000000;
+
+	ixp2000_pci_setup(nr, sys);
+
+	return 1;
+}
+
+static int __init ixdp2400_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+	if (ixdp2x00_master_npu()) {
+
+		/*
+		 * Root bus devices.  Slave NPU is only one with interrupt.
+		 * Everything else, we just return -1 b/c nothing else
+		 * on the root bus has interrupts.
+		 */
+		if(!dev->bus->self) {
+			if(dev->devfn == IXDP2X00_SLAVE_NPU_DEVFN )
+				return IRQ_IXDP2400_INGRESS_NPU;
+
+			return -1;
+		}
+
+		/*
+		 * Bridge behind the PMC slot.
+		 * NOTE: Only INTA from the PMC slot is routed. VERY BAD.
+		 */
+		if(dev->bus->self->devfn == IXDP2X00_PMC_DEVFN &&
+			dev->bus->parent->self->devfn == IXDP2X00_P2P_DEVFN &&
+			!dev->bus->parent->self->bus->parent)
+				  return IRQ_IXDP2400_PMC;
+
+		/*
+		 * Device behind the first bridge
+		 */
+		if(dev->bus->self->devfn == IXDP2X00_P2P_DEVFN) {
+			switch(dev->devfn) {
+				case IXDP2400_MASTER_ENET_DEVFN:	
+					return IRQ_IXDP2400_ENET;	
+			
+				case IXDP2400_MEDIA_DEVFN:
+					return IRQ_IXDP2400_MEDIA_PCI;
+
+				case IXDP2400_SWITCH_FABRIC_DEVFN:
+					return IRQ_IXDP2400_SF_PCI;
+
+				case IXDP2X00_PMC_DEVFN:
+					return IRQ_IXDP2400_PMC;
+			}
+		}
+
+		return -1;
+	} else return IRQ_IXP2000_PCIB; /* Slave NIC interrupt */
+}
+
+
+static void ixdp2400_pci_postinit(void)
+{
+	struct pci_dev *dev;
+
+	if (ixdp2x00_master_npu()) {
+		dev = pci_get_bus_and_slot(1, IXDP2400_SLAVE_ENET_DEVFN);
+		pci_remove_bus_device(dev);
+		pci_dev_put(dev);
+	} else {
+		dev = pci_get_bus_and_slot(1, IXDP2400_MASTER_ENET_DEVFN);
+		pci_remove_bus_device(dev);
+		pci_dev_put(dev);
+
+		ixdp2x00_slave_pci_postinit();
+	}
+}
+
+static struct hw_pci ixdp2400_pci __initdata = {
+	.nr_controllers	= 1,
+	.setup		= ixdp2400_pci_setup,
+	.preinit	= ixdp2400_pci_preinit,
+	.postinit	= ixdp2400_pci_postinit,
+	.scan		= ixp2000_pci_scan_bus,
+	.map_irq	= ixdp2400_pci_map_irq,
+};
+
+int __init ixdp2400_pci_init(void)
+{
+	if (machine_is_ixdp2400())
+		pci_common_init(&ixdp2400_pci);
+
+	return 0;
+}
+
+subsys_initcall(ixdp2400_pci_init);
+
+void __init ixdp2400_init_irq(void)
+{
+	ixdp2x00_init_irq(IXDP2400_CPLD_INT_STAT, IXDP2400_CPLD_INT_MASK, IXDP2400_NR_IRQS);
+}
+
+MACHINE_START(IXDP2400, "Intel IXDP2400 Development Platform")
+	/* Maintainer: MontaVista Software, Inc. */
+	.boot_params	= 0x00000100,
+	.map_io		= ixdp2x00_map_io,
+	.init_irq	= ixdp2400_init_irq,
+	.timer		= &ixdp2400_timer,
+	.init_machine	= ixdp2x00_init_machine,
+MACHINE_END
+
-- 
cgit v1.2.3