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>

1 files changed, 535 insertions, 0 deletions

diff --git a/kernel/arch/powerpc/sysdev/mv64x60_dev.c b/kernel/arch/powerpc/sysdev/mv64x60_dev.c
new file mode 100644
index 000000000..026bbc3b2
--- /dev/null
+++ b/kernel/arch/powerpc/sysdev/mv64x60_dev.c
@@ -0,0 +1,535 @@
+/*
+ * Platform device setup for Marvell mv64360/mv64460 host bridges (Discovery)
+ *
+ * Author: Dale Farnsworth <dale@farnsworth.org>
+ *
+ * 2007 (c) MontaVista, Software, Inc.  This file is licensed under
+ * the terms of the GNU General Public License version 2.  This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/console.h>
+#include <linux/mv643xx.h>
+#include <linux/platform_device.h>
+#include <linux/of_platform.h>
+#include <linux/of_net.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/prom.h>
+
+/* These functions provide the necessary setup for the mv64x60 drivers. */
+
+static const struct of_device_id of_mv64x60_devices[] __initconst = {
+	{ .compatible = "marvell,mv64306-devctrl", },
+	{}
+};
+
+/*
+ * Create MPSC platform devices
+ */
+static int __init mv64x60_mpsc_register_shared_pdev(struct device_node *np)
+{
+	struct platform_device *pdev;
+	struct resource r[2];
+	struct mpsc_shared_pdata pdata;
+	const phandle *ph;
+	struct device_node *mpscrouting, *mpscintr;
+	int err;
+
+	ph = of_get_property(np, "mpscrouting", NULL);
+	mpscrouting = of_find_node_by_phandle(*ph);
+	if (!mpscrouting)
+		return -ENODEV;
+
+	err = of_address_to_resource(mpscrouting, 0, &r[0]);
+	of_node_put(mpscrouting);
+	if (err)
+		return err;
+
+	ph = of_get_property(np, "mpscintr", NULL);
+	mpscintr = of_find_node_by_phandle(*ph);
+	if (!mpscintr)
+		return -ENODEV;
+
+	err = of_address_to_resource(mpscintr, 0, &r[1]);
+	of_node_put(mpscintr);
+	if (err)
+		return err;
+
+	memset(&pdata, 0, sizeof(pdata));
+
+	pdev = platform_device_alloc(MPSC_SHARED_NAME, 0);
+	if (!pdev)
+		return -ENOMEM;
+
+	err = platform_device_add_resources(pdev, r, 2);
+	if (err)
+		goto error;
+
+	err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
+	if (err)
+		goto error;
+
+	err = platform_device_add(pdev);
+	if (err)
+		goto error;
+
+	return 0;
+
+error:
+	platform_device_put(pdev);
+	return err;
+}
+
+
+static int __init mv64x60_mpsc_device_setup(struct device_node *np, int id)
+{
+	struct resource r[5];
+	struct mpsc_pdata pdata;
+	struct platform_device *pdev;
+	const unsigned int *prop;
+	const phandle *ph;
+	struct device_node *sdma, *brg;
+	int err;
+	int port_number;
+
+	/* only register the shared platform device the first time through */
+	if (id == 0 && (err = mv64x60_mpsc_register_shared_pdev(np)))
+		return err;
+
+	memset(r, 0, sizeof(r));
+
+	err = of_address_to_resource(np, 0, &r[0]);
+	if (err)
+		return err;
+
+	of_irq_to_resource(np, 0, &r[4]);
+
+	ph = of_get_property(np, "sdma", NULL);
+	sdma = of_find_node_by_phandle(*ph);
+	if (!sdma)
+		return -ENODEV;
+
+	of_irq_to_resource(sdma, 0, &r[3]);
+	err = of_address_to_resource(sdma, 0, &r[1]);
+	of_node_put(sdma);
+	if (err)
+		return err;
+
+	ph = of_get_property(np, "brg", NULL);
+	brg = of_find_node_by_phandle(*ph);
+	if (!brg)
+		return -ENODEV;
+
+	err = of_address_to_resource(brg, 0, &r[2]);
+	of_node_put(brg);
+	if (err)
+		return err;
+
+	prop = of_get_property(np, "cell-index", NULL);
+	if (!prop)
+		return -ENODEV;
+	port_number = *(int *)prop;
+
+	memset(&pdata, 0, sizeof(pdata));
+
+	pdata.cache_mgmt = 1; /* All current revs need this set */
+
+	pdata.max_idle = 40; /* default */
+	prop = of_get_property(np, "max_idle", NULL);
+	if (prop)
+		pdata.max_idle = *prop;
+
+	prop = of_get_property(brg, "current-speed", NULL);
+	if (prop)
+		pdata.default_baud = *prop;
+
+	/* Default is 8 bits, no parity, no flow control */
+	pdata.default_bits = 8;
+	pdata.default_parity = 'n';
+	pdata.default_flow = 'n';
+
+	prop = of_get_property(np, "chr_1", NULL);
+	if (prop)
+		pdata.chr_1_val = *prop;
+
+	prop = of_get_property(np, "chr_2", NULL);
+	if (prop)
+		pdata.chr_2_val = *prop;
+
+	prop = of_get_property(np, "chr_10", NULL);
+	if (prop)
+		pdata.chr_10_val = *prop;
+
+	prop = of_get_property(np, "mpcr", NULL);
+	if (prop)
+		pdata.mpcr_val = *prop;
+
+	prop = of_get_property(brg, "bcr", NULL);
+	if (prop)
+		pdata.bcr_val = *prop;
+
+	pdata.brg_can_tune = 1; /* All current revs need this set */
+
+	prop = of_get_property(brg, "clock-src", NULL);
+	if (prop)
+		pdata.brg_clk_src = *prop;
+
+	prop = of_get_property(brg, "clock-frequency", NULL);
+	if (prop)
+		pdata.brg_clk_freq = *prop;
+
+	pdev = platform_device_alloc(MPSC_CTLR_NAME, port_number);
+	if (!pdev)
+		return -ENOMEM;
+	pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+
+	err = platform_device_add_resources(pdev, r, 5);
+	if (err)
+		goto error;
+
+	err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
+	if (err)
+		goto error;
+
+	err = platform_device_add(pdev);
+	if (err)
+		goto error;
+
+	return 0;
+
+error:
+	platform_device_put(pdev);
+	return err;
+}
+
+/*
+ * Create mv64x60_eth platform devices
+ */
+static struct platform_device * __init mv64x60_eth_register_shared_pdev(
+						struct device_node *np, int id)
+{
+	struct platform_device *pdev;
+	struct resource r[2];
+	int err;
+
+	err = of_address_to_resource(np, 0, &r[0]);
+	if (err)
+		return ERR_PTR(err);
+
+	/* register an orion mdio bus driver */
+	r[1].start = r[0].start + 0x4;
+	r[1].end = r[0].start + 0x84 - 1;
+	r[1].flags = IORESOURCE_MEM;
+
+	if (id == 0) {
+		pdev = platform_device_register_simple("orion-mdio", -1, &r[1], 1);
+		if (IS_ERR(pdev))
+			return pdev;
+	}
+
+	pdev = platform_device_register_simple(MV643XX_ETH_SHARED_NAME, id,
+					       &r[0], 1);
+
+	return pdev;
+}
+
+static int __init mv64x60_eth_device_setup(struct device_node *np, int id,
+					   struct platform_device *shared_pdev)
+{
+	struct resource r[1];
+	struct mv643xx_eth_platform_data pdata;
+	struct platform_device *pdev;
+	struct device_node *phy;
+	const u8 *mac_addr;
+	const int *prop;
+	const phandle *ph;
+	int err;
+
+	memset(r, 0, sizeof(r));
+	of_irq_to_resource(np, 0, &r[0]);
+
+	memset(&pdata, 0, sizeof(pdata));
+
+	pdata.shared = shared_pdev;
+
+	prop = of_get_property(np, "reg", NULL);
+	if (!prop)
+		return -ENODEV;
+	pdata.port_number = *prop;
+
+	mac_addr = of_get_mac_address(np);
+	if (mac_addr)
+		memcpy(pdata.mac_addr, mac_addr, 6);
+
+	prop = of_get_property(np, "speed", NULL);
+	if (prop)
+		pdata.speed = *prop;
+
+	prop = of_get_property(np, "tx_queue_size", NULL);
+	if (prop)
+		pdata.tx_queue_size = *prop;
+
+	prop = of_get_property(np, "rx_queue_size", NULL);
+	if (prop)
+		pdata.rx_queue_size = *prop;
+
+	prop = of_get_property(np, "tx_sram_addr", NULL);
+	if (prop)
+		pdata.tx_sram_addr = *prop;
+
+	prop = of_get_property(np, "tx_sram_size", NULL);
+	if (prop)
+		pdata.tx_sram_size = *prop;
+
+	prop = of_get_property(np, "rx_sram_addr", NULL);
+	if (prop)
+		pdata.rx_sram_addr = *prop;
+
+	prop = of_get_property(np, "rx_sram_size", NULL);
+	if (prop)
+		pdata.rx_sram_size = *prop;
+
+	ph = of_get_property(np, "phy", NULL);
+	if (!ph)
+		return -ENODEV;
+
+	phy = of_find_node_by_phandle(*ph);
+	if (phy == NULL)
+		return -ENODEV;
+
+	prop = of_get_property(phy, "reg", NULL);
+	if (prop)
+		pdata.phy_addr = MV643XX_ETH_PHY_ADDR(*prop);
+
+	of_node_put(phy);
+
+	pdev = platform_device_alloc(MV643XX_ETH_NAME, id);
+	if (!pdev)
+		return -ENOMEM;
+
+	pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+	err = platform_device_add_resources(pdev, r, 1);
+	if (err)
+		goto error;
+
+	err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
+	if (err)
+		goto error;
+
+	err = platform_device_add(pdev);
+	if (err)
+		goto error;
+
+	return 0;
+
+error:
+	platform_device_put(pdev);
+	return err;
+}
+
+/*
+ * Create mv64x60_i2c platform devices
+ */
+static int __init mv64x60_i2c_device_setup(struct device_node *np, int id)
+{
+	struct resource r[2];
+	struct platform_device *pdev;
+	struct mv64xxx_i2c_pdata pdata;
+	const unsigned int *prop;
+	int err;
+
+	memset(r, 0, sizeof(r));
+
+	err = of_address_to_resource(np, 0, &r[0]);
+	if (err)
+		return err;
+
+	of_irq_to_resource(np, 0, &r[1]);
+
+	memset(&pdata, 0, sizeof(pdata));
+
+	pdata.freq_m = 8;	/* default */
+	prop = of_get_property(np, "freq_m", NULL);
+	if (prop)
+		pdata.freq_m = *prop;
+
+	pdata.freq_n = 3;	/* default */
+	prop = of_get_property(np, "freq_n", NULL);
+	if (prop)
+		pdata.freq_n = *prop;
+
+	pdata.timeout = 1000;				/* default: 1 second */
+
+	pdev = platform_device_alloc(MV64XXX_I2C_CTLR_NAME, id);
+	if (!pdev)
+		return -ENOMEM;
+
+	err = platform_device_add_resources(pdev, r, 2);
+	if (err)
+		goto error;
+
+	err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
+	if (err)
+		goto error;
+
+	err = platform_device_add(pdev);
+	if (err)
+		goto error;
+
+	return 0;
+
+error:
+	platform_device_put(pdev);
+	return err;
+}
+
+/*
+ * Create mv64x60_wdt platform devices
+ */
+static int __init mv64x60_wdt_device_setup(struct device_node *np, int id)
+{
+	struct resource r;
+	struct platform_device *pdev;
+	struct mv64x60_wdt_pdata pdata;
+	const unsigned int *prop;
+	int err;
+
+	err = of_address_to_resource(np, 0, &r);
+	if (err)
+		return err;
+
+	memset(&pdata, 0, sizeof(pdata));
+
+	pdata.timeout = 10;			/* Default: 10 seconds */
+
+	np = of_get_parent(np);
+	if (!np)
+		return -ENODEV;
+
+	prop = of_get_property(np, "clock-frequency", NULL);
+	of_node_put(np);
+	if (!prop)
+		return -ENODEV;
+	pdata.bus_clk = *prop / 1000000; /* wdt driver wants freq in MHz */
+
+	pdev = platform_device_alloc(MV64x60_WDT_NAME, id);
+	if (!pdev)
+		return -ENOMEM;
+
+	err = platform_device_add_resources(pdev, &r, 1);
+	if (err)
+		goto error;
+
+	err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
+	if (err)
+		goto error;
+
+	err = platform_device_add(pdev);
+	if (err)
+		goto error;
+
+	return 0;
+
+error:
+	platform_device_put(pdev);
+	return err;
+}
+
+static int __init mv64x60_device_setup(void)
+{
+	struct device_node *np, *np2;
+	struct platform_device *pdev;
+	int id, id2;
+	int err;
+
+	id = 0;
+	for_each_compatible_node(np, NULL, "marvell,mv64360-mpsc") {
+		err = mv64x60_mpsc_device_setup(np, id++);
+		if (err)
+			printk(KERN_ERR "Failed to initialize MV64x60 "
+					"serial device %s: error %d.\n",
+					np->full_name, err);
+	}
+
+	id = 0;
+	id2 = 0;
+	for_each_compatible_node(np, NULL, "marvell,mv64360-eth-group") {
+		pdev = mv64x60_eth_register_shared_pdev(np, id++);
+		if (IS_ERR(pdev)) {
+			err = PTR_ERR(pdev);
+			printk(KERN_ERR "Failed to initialize MV64x60 "
+					"network block %s: error %d.\n",
+					np->full_name, err);
+			continue;
+		}
+		for_each_child_of_node(np, np2) {
+			if (!of_device_is_compatible(np2,
+					"marvell,mv64360-eth"))
+				continue;
+			err = mv64x60_eth_device_setup(np2, id2++, pdev);
+			if (err)
+				printk(KERN_ERR "Failed to initialize "
+						"MV64x60 network device %s: "
+						"error %d.\n",
+						np2->full_name, err);
+		}
+	}
+
+	id = 0;
+	for_each_compatible_node(np, "i2c", "marvell,mv64360-i2c") {
+		err = mv64x60_i2c_device_setup(np, id++);
+		if (err)
+			printk(KERN_ERR "Failed to initialize MV64x60 I2C "
+					"bus %s: error %d.\n",
+					np->full_name, err);
+	}
+
+	/* support up to one watchdog timer */
+	np = of_find_compatible_node(np, NULL, "marvell,mv64360-wdt");
+	if (np) {
+		if ((err = mv64x60_wdt_device_setup(np, id)))
+			printk(KERN_ERR "Failed to initialize MV64x60 "
+					"Watchdog %s: error %d.\n",
+					np->full_name, err);
+		of_node_put(np);
+	}
+
+	/* Now add every node that is on the device bus */
+	for_each_compatible_node(np, NULL, "marvell,mv64360")
+		of_platform_bus_probe(np, of_mv64x60_devices, NULL);
+
+	return 0;
+}
+arch_initcall(mv64x60_device_setup);
+
+static int __init mv64x60_add_mpsc_console(void)
+{
+	struct device_node *np = NULL;
+	const char *prop;
+
+	prop = of_get_property(of_chosen, "linux,stdout-path", NULL);
+	if (prop == NULL)
+		goto not_mpsc;
+
+	np = of_find_node_by_path(prop);
+	if (!np)
+		goto not_mpsc;
+
+	if (!of_device_is_compatible(np, "marvell,mv64360-mpsc"))
+		goto not_mpsc;
+
+	prop = of_get_property(np, "cell-index", NULL);
+	if (!prop)
+		goto not_mpsc;
+
+	add_preferred_console("ttyMM", *(int *)prop, NULL);
+
+not_mpsc:
+	return 0;
+}
+console_initcall(mv64x60_add_mpsc_console);