Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

3 files changed, 323 insertions, 0 deletions

diff --git a/kernel/arch/sh/boards/mach-se/7722/Makefile b/kernel/arch/sh/boards/mach-se/7722/Makefile
new file mode 100644
index 000000000..869437338
--- /dev/null
+++ b/kernel/arch/sh/boards/mach-se/7722/Makefile
@@ -0,0 +1,10 @@
+#
+# Makefile for the HITACHI UL SolutionEngine 7722 specific parts of the kernel
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License.  See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+#
+
+obj-y	 := setup.o irq.o
diff --git a/kernel/arch/sh/boards/mach-se/7722/irq.c b/kernel/arch/sh/boards/mach-se/7722/irq.c
new file mode 100644
index 000000000..00e699232
--- /dev/null
+++ b/kernel/arch/sh/boards/mach-se/7722/irq.c
@@ -0,0 +1,119 @@
+/*
+ * Hitachi UL SolutionEngine 7722 FPGA IRQ Support.
+ *
+ * Copyright (C) 2007  Nobuhiro Iwamatsu
+ * Copyright (C) 2012  Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#define DRV_NAME "SE7722-FPGA"
+#define pr_fmt(fmt) DRV_NAME ": " fmt
+
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/irqdomain.h>
+#include <linux/io.h>
+#include <linux/err.h>
+#include <asm/sizes.h>
+#include <mach-se/mach/se7722.h>
+
+#define IRQ01_BASE_ADDR	0x11800000
+#define IRQ01_MODE_REG	0
+#define IRQ01_STS_REG	4
+#define IRQ01_MASK_REG	8
+
+static void __iomem *se7722_irq_regs;
+struct irq_domain *se7722_irq_domain;
+
+static void se7722_irq_demux(unsigned int irq, struct irq_desc *desc)
+{
+	struct irq_data *data = irq_get_irq_data(irq);
+	struct irq_chip *chip = irq_data_get_irq_chip(data);
+	unsigned long mask;
+	int bit;
+
+	chip->irq_mask_ack(data);
+
+	mask = ioread16(se7722_irq_regs + IRQ01_STS_REG);
+
+	for_each_set_bit(bit, &mask, SE7722_FPGA_IRQ_NR)
+		generic_handle_irq(irq_linear_revmap(se7722_irq_domain, bit));
+
+	chip->irq_unmask(data);
+}
+
+static void __init se7722_domain_init(void)
+{
+	int i;
+
+	se7722_irq_domain = irq_domain_add_linear(NULL, SE7722_FPGA_IRQ_NR,
+						  &irq_domain_simple_ops, NULL);
+	if (unlikely(!se7722_irq_domain)) {
+		printk("Failed to get IRQ domain\n");
+		return;
+	}
+
+	for (i = 0; i < SE7722_FPGA_IRQ_NR; i++) {
+		int irq = irq_create_mapping(se7722_irq_domain, i);
+
+		if (unlikely(irq == 0)) {
+			printk("Failed to allocate IRQ %d\n", i);
+			return;
+		}
+	}
+}
+
+static void __init se7722_gc_init(void)
+{
+	struct irq_chip_generic *gc;
+	struct irq_chip_type *ct;
+	unsigned int irq_base;
+
+	irq_base = irq_linear_revmap(se7722_irq_domain, 0);
+
+	gc = irq_alloc_generic_chip(DRV_NAME, 1, irq_base, se7722_irq_regs,
+				    handle_level_irq);
+	if (unlikely(!gc))
+		return;
+
+	ct = gc->chip_types;
+	ct->chip.irq_mask = irq_gc_mask_set_bit;
+	ct->chip.irq_unmask = irq_gc_mask_clr_bit;
+
+	ct->regs.mask = IRQ01_MASK_REG;
+
+	irq_setup_generic_chip(gc, IRQ_MSK(SE7722_FPGA_IRQ_NR),
+			       IRQ_GC_INIT_MASK_CACHE,
+			       IRQ_NOREQUEST | IRQ_NOPROBE, 0);
+
+	irq_set_chained_handler(IRQ0_IRQ, se7722_irq_demux);
+	irq_set_irq_type(IRQ0_IRQ, IRQ_TYPE_LEVEL_LOW);
+
+	irq_set_chained_handler(IRQ1_IRQ, se7722_irq_demux);
+	irq_set_irq_type(IRQ1_IRQ, IRQ_TYPE_LEVEL_LOW);
+}
+
+/*
+ * Initialize FPGA IRQs
+ */
+void __init init_se7722_IRQ(void)
+{
+	se7722_irq_regs = ioremap(IRQ01_BASE_ADDR, SZ_16);
+	if (unlikely(!se7722_irq_regs)) {
+		printk("Failed to remap IRQ01 regs\n");
+		return;
+	}
+
+	/*
+	 * All FPGA IRQs disabled by default
+	 */
+	iowrite16(0, se7722_irq_regs + IRQ01_MASK_REG);
+
+	__raw_writew(0x2000, 0xb03fffec);  /* mrshpc irq enable */
+
+	se7722_domain_init();
+	se7722_gc_init();
+}
diff --git a/kernel/arch/sh/boards/mach-se/7722/setup.c b/kernel/arch/sh/boards/mach-se/7722/setup.c
new file mode 100644
index 000000000..e04e2bc46
--- /dev/null
+++ b/kernel/arch/sh/boards/mach-se/7722/setup.c
@@ -0,0 +1,194 @@
+/*
+ * linux/arch/sh/boards/se/7722/setup.c
+ *
+ * Copyright (C) 2007 Nobuhiro Iwamatsu
+ * Copyright (C) 2012 Paul Mundt
+ *
+ * Hitachi UL SolutionEngine 7722 Support.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ */
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/ata_platform.h>
+#include <linux/input.h>
+#include <linux/input/sh_keysc.h>
+#include <linux/irqdomain.h>
+#include <linux/smc91x.h>
+#include <linux/sh_intc.h>
+#include <mach-se/mach/se7722.h>
+#include <mach-se/mach/mrshpc.h>
+#include <asm/machvec.h>
+#include <asm/clock.h>
+#include <asm/io.h>
+#include <asm/heartbeat.h>
+#include <cpu/sh7722.h>
+
+/* Heartbeat */
+static struct resource heartbeat_resource = {
+	.start  = PA_LED,
+	.end    = PA_LED,
+	.flags  = IORESOURCE_MEM | IORESOURCE_MEM_16BIT,
+};
+
+static struct platform_device heartbeat_device = {
+	.name           = "heartbeat",
+	.id             = -1,
+	.num_resources  = 1,
+	.resource       = &heartbeat_resource,
+};
+
+/* SMC91x */
+static struct smc91x_platdata smc91x_info = {
+	.flags = SMC91X_USE_16BIT,
+};
+
+static struct resource smc91x_eth_resources[] = {
+	[0] = {
+		.name   = "smc91x-regs" ,
+		.start  = PA_LAN + 0x300,
+		.end    = PA_LAN + 0x300 + 0x10 ,
+		.flags  = IORESOURCE_MEM,
+	},
+	[1] = {
+		/* Filled in later */
+		.flags  = IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device smc91x_eth_device = {
+	.name           = "smc91x",
+	.id             = 0,
+	.dev = {
+		.dma_mask               = NULL,         /* don't use dma */
+		.coherent_dma_mask      = 0xffffffff,
+		.platform_data	= &smc91x_info,
+	},
+	.num_resources  = ARRAY_SIZE(smc91x_eth_resources),
+	.resource       = smc91x_eth_resources,
+};
+
+static struct resource cf_ide_resources[] = {
+	[0] = {
+		.start  = PA_MRSHPC_IO + 0x1f0,
+		.end    = PA_MRSHPC_IO + 0x1f0 + 8 ,
+		.flags  = IORESOURCE_IO,
+	},
+	[1] = {
+		.start  = PA_MRSHPC_IO + 0x1f0 + 0x206,
+		.end    = PA_MRSHPC_IO + 0x1f0 +8 + 0x206 + 8,
+		.flags  = IORESOURCE_IO,
+	},
+	[2] = {
+		/* Filled in later */
+		.flags  = IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device cf_ide_device  = {
+	.name           = "pata_platform",
+	.id             = -1,
+	.num_resources  = ARRAY_SIZE(cf_ide_resources),
+	.resource       = cf_ide_resources,
+};
+
+static struct sh_keysc_info sh_keysc_info = {
+	.mode = SH_KEYSC_MODE_1, /* KEYOUT0->5, KEYIN0->4 */
+	.scan_timing = 3,
+	.delay = 5,
+	.keycodes = { /* SW1 -> SW30 */
+		KEY_A, KEY_B, KEY_C, KEY_D, KEY_E,
+		KEY_F, KEY_G, KEY_H, KEY_I, KEY_J,
+		KEY_K, KEY_L, KEY_M, KEY_N, KEY_O,
+		KEY_P, KEY_Q, KEY_R, KEY_S, KEY_T,
+		KEY_U, KEY_V, KEY_W, KEY_X, KEY_Y,
+		KEY_Z,
+		KEY_HOME, KEY_SLEEP, KEY_WAKEUP, KEY_COFFEE, /* life */
+	},
+};
+
+static struct resource sh_keysc_resources[] = {
+	[0] = {
+		.start  = 0x044b0000,
+		.end    = 0x044b000f,
+		.flags  = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start  = evt2irq(0xbe0),
+		.flags  = IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device sh_keysc_device = {
+	.name           = "sh_keysc",
+	.id             = 0, /* "keysc0" clock */
+	.num_resources  = ARRAY_SIZE(sh_keysc_resources),
+	.resource       = sh_keysc_resources,
+	.dev	= {
+		.platform_data	= &sh_keysc_info,
+	},
+};
+
+static struct platform_device *se7722_devices[] __initdata = {
+	&heartbeat_device,
+	&smc91x_eth_device,
+	&cf_ide_device,
+	&sh_keysc_device,
+};
+
+static int __init se7722_devices_setup(void)
+{
+	mrshpc_setup_windows();
+
+	/* Wire-up dynamic vectors */
+	cf_ide_resources[2].start = cf_ide_resources[2].end =
+		irq_find_mapping(se7722_irq_domain, SE7722_FPGA_IRQ_MRSHPC0);
+
+	smc91x_eth_resources[1].start = smc91x_eth_resources[1].end =
+		irq_find_mapping(se7722_irq_domain, SE7722_FPGA_IRQ_SMC);
+
+	return platform_add_devices(se7722_devices, ARRAY_SIZE(se7722_devices));
+}
+device_initcall(se7722_devices_setup);
+
+static void __init se7722_setup(char **cmdline_p)
+{
+	__raw_writew(0x010D, FPGA_OUT);    /* FPGA */
+
+	__raw_writew(0x0000, PORT_PECR);   /* PORT E 1 = IRQ5 ,E 0 = BS */
+	__raw_writew(0x1000, PORT_PJCR);   /* PORT J 1 = IRQ1,J 0 =IRQ0 */
+
+	/* LCDC I/O */
+	__raw_writew(0x0020, PORT_PSELD);
+
+	/* SIOF1*/
+	__raw_writew(0x0003, PORT_PSELB);
+	__raw_writew(0xe000, PORT_PSELC);
+	__raw_writew(0x0000, PORT_PKCR);
+
+	/* LCDC */
+	__raw_writew(0x4020, PORT_PHCR);
+	__raw_writew(0x0000, PORT_PLCR);
+	__raw_writew(0x0000, PORT_PMCR);
+	__raw_writew(0x0002, PORT_PRCR);
+	__raw_writew(0x0000, PORT_PXCR);   /* LCDC,CS6A */
+
+	/* KEYSC */
+	__raw_writew(0x0A10, PORT_PSELA); /* BS,SHHID2 */
+	__raw_writew(0x0000, PORT_PYCR);
+	__raw_writew(0x0000, PORT_PZCR);
+	__raw_writew(__raw_readw(PORT_HIZCRA) & ~0x4000, PORT_HIZCRA);
+	__raw_writew(__raw_readw(PORT_HIZCRC) & ~0xc000, PORT_HIZCRC);
+}
+
+/*
+ * The Machine Vector
+ */
+static struct sh_machine_vector mv_se7722 __initmv = {
+	.mv_name                = "Solution Engine 7722" ,
+	.mv_setup               = se7722_setup ,
+	.mv_init_irq		= init_se7722_IRQ,
+};