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, 771 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-footbridge/netwinder-hw.c b/kernel/arch/arm/mach-footbridge/netwinder-hw.c
new file mode 100644
index 000000000..cdee08c6d
--- /dev/null
+++ b/kernel/arch/arm/mach-footbridge/netwinder-hw.c
@@ -0,0 +1,771 @@
+/*
+ * linux/arch/arm/mach-footbridge/netwinder-hw.c
+ *
+ * Netwinder machine fixup
+ *
+ * Copyright (C) 1998, 1999 Russell King, Phil Blundell
+ */
+#include <linux/module.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <linux/leds.h>
+
+#include <asm/hardware/dec21285.h>
+#include <asm/mach-types.h>
+#include <asm/setup.h>
+#include <asm/system_misc.h>
+
+#include <asm/mach/arch.h>
+
+#include "common.h"
+
+#define IRDA_IO_BASE		0x180
+#define GP1_IO_BASE		0x338
+#define GP2_IO_BASE		0x33a
+
+/*
+ * Winbond WB83977F accessibility stuff
+ */
+static inline void wb977_open(void)
+{
+	outb(0x87, 0x370);
+	outb(0x87, 0x370);
+}
+
+static inline void wb977_close(void)
+{
+	outb(0xaa, 0x370);
+}
+
+static inline void wb977_wb(int reg, int val)
+{
+	outb(reg, 0x370);
+	outb(val, 0x371);
+}
+
+static inline void wb977_ww(int reg, int val)
+{
+	outb(reg, 0x370);
+	outb(val >> 8, 0x371);
+	outb(reg + 1, 0x370);
+	outb(val & 255, 0x371);
+}
+
+#define wb977_device_select(dev)	wb977_wb(0x07, dev)
+#define wb977_device_disable()		wb977_wb(0x30, 0x00)
+#define wb977_device_enable()		wb977_wb(0x30, 0x01)
+
+/*
+ * This is a lock for accessing ports GP1_IO_BASE and GP2_IO_BASE
+ */
+DEFINE_RAW_SPINLOCK(nw_gpio_lock);
+EXPORT_SYMBOL(nw_gpio_lock);
+
+static unsigned int current_gpio_op;
+static unsigned int current_gpio_io;
+static unsigned int current_cpld;
+
+void nw_gpio_modify_op(unsigned int mask, unsigned int set)
+{
+	unsigned int new_gpio, changed;
+
+	new_gpio = (current_gpio_op & ~mask) | set;
+	changed = new_gpio ^ current_gpio_op;
+	current_gpio_op = new_gpio;
+
+	if (changed & 0xff)
+		outb(new_gpio, GP1_IO_BASE);
+	if (changed & 0xff00)
+		outb(new_gpio >> 8, GP2_IO_BASE);
+}
+EXPORT_SYMBOL(nw_gpio_modify_op);
+
+static inline void __gpio_modify_io(int mask, int in)
+{
+	unsigned int new_gpio, changed;
+	int port;
+
+	new_gpio = (current_gpio_io & ~mask) | in;
+	changed = new_gpio ^ current_gpio_io;
+	current_gpio_io = new_gpio;
+
+	changed >>= 1;
+	new_gpio >>= 1;
+
+	wb977_device_select(7);
+
+	for (port = 0xe1; changed && port < 0xe8; changed >>= 1) {
+		wb977_wb(port, new_gpio & 1);
+
+		port += 1;
+		new_gpio >>= 1;
+	}
+
+	wb977_device_select(8);
+
+	for (port = 0xe8; changed && port < 0xec; changed >>= 1) {
+		wb977_wb(port, new_gpio & 1);
+
+		port += 1;
+		new_gpio >>= 1;
+	}
+}
+
+void nw_gpio_modify_io(unsigned int mask, unsigned int in)
+{
+	/* Open up the SuperIO chip */
+	wb977_open();
+
+	__gpio_modify_io(mask, in);
+
+	/* Close up the EFER gate */
+	wb977_close();
+}
+EXPORT_SYMBOL(nw_gpio_modify_io);
+
+unsigned int nw_gpio_read(void)
+{
+	return inb(GP1_IO_BASE) | inb(GP2_IO_BASE) << 8;
+}
+EXPORT_SYMBOL(nw_gpio_read);
+
+/*
+ * Initialise the Winbond W83977F global registers
+ */
+static inline void wb977_init_global(void)
+{
+	/*
+	 * Enable R/W config registers
+	 */
+	wb977_wb(0x26, 0x40);
+
+	/*
+	 * Power down FDC (not used)
+	 */
+	wb977_wb(0x22, 0xfe);
+
+	/*
+	 * GP12, GP11, CIRRX, IRRXH, GP10
+	 */
+	wb977_wb(0x2a, 0xc1);
+
+	/*
+	 * GP23, GP22, GP21, GP20, GP13
+	 */
+	wb977_wb(0x2b, 0x6b);
+
+	/*
+	 * GP17, GP16, GP15, GP14
+	 */
+	wb977_wb(0x2c, 0x55);
+}
+
+/*
+ * Initialise the Winbond W83977F printer port
+ */
+static inline void wb977_init_printer(void)
+{
+	wb977_device_select(1);
+
+	/*
+	 * mode 1 == EPP
+	 */
+	wb977_wb(0xf0, 0x01);
+}
+
+/*
+ * Initialise the Winbond W83977F keyboard controller
+ */
+static inline void wb977_init_keyboard(void)
+{
+	wb977_device_select(5);
+
+	/*
+	 * Keyboard controller address
+	 */
+	wb977_ww(0x60, 0x0060);
+	wb977_ww(0x62, 0x0064);
+
+	/*
+	 * Keyboard IRQ 1, active high, edge trigger
+	 */
+	wb977_wb(0x70, 1);
+	wb977_wb(0x71, 0x02);
+
+	/*
+	 * Mouse IRQ 5, active high, edge trigger
+	 */
+	wb977_wb(0x72, 5);
+	wb977_wb(0x73, 0x02);
+
+	/*
+	 * KBC 8MHz
+	 */
+	wb977_wb(0xf0, 0x40);
+
+	/*
+	 * Enable device
+	 */
+	wb977_device_enable();
+}
+
+/*
+ * Initialise the Winbond W83977F Infra-Red device
+ */
+static inline void wb977_init_irda(void)
+{
+	wb977_device_select(6);
+
+	/*
+	 * IR base address
+	 */
+	wb977_ww(0x60, IRDA_IO_BASE);
+
+	/*
+	 * IRDA IRQ 6, active high, edge trigger
+	 */
+	wb977_wb(0x70, 6);
+	wb977_wb(0x71, 0x02);
+
+	/*
+	 * RX DMA - ISA DMA 0
+	 */
+	wb977_wb(0x74, 0x00);
+
+	/*
+	 * TX DMA - Disable Tx DMA
+	 */
+	wb977_wb(0x75, 0x04);
+
+	/*
+	 * Append CRC, Enable bank selection
+	 */
+	wb977_wb(0xf0, 0x03);
+
+	/*
+	 * Enable device
+	 */
+	wb977_device_enable();
+}
+
+/*
+ * Initialise Winbond W83977F general purpose IO
+ */
+static inline void wb977_init_gpio(void)
+{
+	unsigned long flags;
+
+	/*
+	 * Set up initial I/O definitions
+	 */
+	current_gpio_io = -1;
+	__gpio_modify_io(-1, GPIO_DONE | GPIO_WDTIMER);
+
+	wb977_device_select(7);
+
+	/*
+	 * Group1 base address
+	 */
+	wb977_ww(0x60, GP1_IO_BASE);
+	wb977_ww(0x62, 0);
+	wb977_ww(0x64, 0);
+
+	/*
+	 * GP10 (Orage button) IRQ 10, active high, edge trigger
+	 */
+	wb977_wb(0x70, 10);
+	wb977_wb(0x71, 0x02);
+
+	/*
+	 * GP10: Debounce filter enabled, IRQ, input
+	 */
+	wb977_wb(0xe0, 0x19);
+
+	/*
+	 * Enable Group1
+	 */
+	wb977_device_enable();
+
+	wb977_device_select(8);
+
+	/*
+	 * Group2 base address
+	 */
+	wb977_ww(0x60, GP2_IO_BASE);
+
+	/*
+	 * Clear watchdog timer regs
+	 *  - timer disable
+	 */
+	wb977_wb(0xf2, 0x00);
+
+	/*
+	 *  - disable LED, no mouse nor keyboard IRQ
+	 */
+	wb977_wb(0xf3, 0x00);
+
+	/*
+	 *  - timer counting, disable power LED, disable timeouot
+	 */
+	wb977_wb(0xf4, 0x00);
+
+	/*
+	 * Enable group2
+	 */
+	wb977_device_enable();
+
+	/*
+	 * Set Group1/Group2 outputs
+	 */
+	raw_spin_lock_irqsave(&nw_gpio_lock, flags);
+	nw_gpio_modify_op(-1, GPIO_RED_LED | GPIO_FAN);
+	raw_spin_unlock_irqrestore(&nw_gpio_lock, flags);
+}
+
+/*
+ * Initialise the Winbond W83977F chip.
+ */
+static void __init wb977_init(void)
+{
+	request_region(0x370, 2, "W83977AF configuration");
+
+	/*
+	 * Open up the SuperIO chip
+	 */
+	wb977_open();
+
+	/*
+	 * Initialise the global registers
+	 */
+	wb977_init_global();
+
+	/*
+	 * Initialise the various devices in
+	 * the multi-IO chip.
+	 */
+	wb977_init_printer();
+	wb977_init_keyboard();
+	wb977_init_irda();
+	wb977_init_gpio();
+
+	/*
+	 * Close up the EFER gate
+	 */
+	wb977_close();
+}
+
+void nw_cpld_modify(unsigned int mask, unsigned int set)
+{
+	int msk;
+
+	current_cpld = (current_cpld & ~mask) | set;
+
+	nw_gpio_modify_io(GPIO_DATA | GPIO_IOCLK | GPIO_IOLOAD, 0);
+	nw_gpio_modify_op(GPIO_IOLOAD, 0);
+
+	for (msk = 8; msk; msk >>= 1) {
+		int bit = current_cpld & msk;
+
+		nw_gpio_modify_op(GPIO_DATA | GPIO_IOCLK, bit ? GPIO_DATA : 0);
+		nw_gpio_modify_op(GPIO_IOCLK, GPIO_IOCLK);
+	}
+
+	nw_gpio_modify_op(GPIO_IOCLK|GPIO_DATA, 0);
+	nw_gpio_modify_op(GPIO_IOLOAD|GPIO_DSCLK, GPIO_IOLOAD|GPIO_DSCLK);
+	nw_gpio_modify_op(GPIO_IOLOAD, 0);
+}
+EXPORT_SYMBOL(nw_cpld_modify);
+
+static void __init cpld_init(void)
+{
+	unsigned long flags;
+
+	raw_spin_lock_irqsave(&nw_gpio_lock, flags);
+	nw_cpld_modify(-1, CPLD_UNMUTE | CPLD_7111_DISABLE);
+	raw_spin_unlock_irqrestore(&nw_gpio_lock, flags);
+}
+
+static unsigned char rwa_unlock[] __initdata =
+{ 0x00, 0x00, 0x6a, 0xb5, 0xda, 0xed, 0xf6, 0xfb, 0x7d, 0xbe, 0xdf, 0x6f, 0x37, 0x1b,
+  0x0d, 0x86, 0xc3, 0x61, 0xb0, 0x58, 0x2c, 0x16, 0x8b, 0x45, 0xa2, 0xd1, 0xe8, 0x74,
+  0x3a, 0x9d, 0xce, 0xe7, 0x73, 0x39 };
+
+#ifndef DEBUG
+#define dprintk(x...)
+#else
+#define dprintk(x...) printk(x)
+#endif
+
+#define WRITE_RWA(r,v) do { outb((r), 0x279); udelay(10); outb((v), 0xa79); } while (0)
+
+static inline void rwa010_unlock(void)
+{
+	int i;
+
+	WRITE_RWA(2, 2);
+	mdelay(10);
+
+	for (i = 0; i < sizeof(rwa_unlock); i++) {
+		outb(rwa_unlock[i], 0x279);
+		udelay(10);
+	}
+}
+
+static inline void rwa010_read_ident(void)
+{
+	unsigned char si[9];
+	int i, j;
+
+	WRITE_RWA(3, 0);
+	WRITE_RWA(0, 128);
+
+	outb(1, 0x279);
+
+	mdelay(1);
+
+	dprintk("Identifier: ");
+	for (i = 0; i < 9; i++) {
+		si[i] = 0;
+		for (j = 0; j < 8; j++) {
+			int bit;
+			udelay(250);
+			inb(0x203);
+			udelay(250);
+			bit = inb(0x203);
+			dprintk("%02X ", bit);
+			bit = (bit == 0xaa) ? 1 : 0;
+			si[i] |= bit << j;
+		}
+		dprintk("(%02X) ", si[i]);
+	}
+	dprintk("\n");
+}
+
+static inline void rwa010_global_init(void)
+{
+	WRITE_RWA(6, 2);	// Assign a card no = 2
+
+	dprintk("Card no = %d\n", inb(0x203));
+
+	/* disable the modem section of the chip */
+	WRITE_RWA(7, 3);
+	WRITE_RWA(0x30, 0);
+
+	/* disable the cdrom section of the chip */
+	WRITE_RWA(7, 4);
+	WRITE_RWA(0x30, 0);
+
+	/* disable the MPU-401 section of the chip */
+	WRITE_RWA(7, 2);
+	WRITE_RWA(0x30, 0);
+}
+
+static inline void rwa010_game_port_init(void)
+{
+	int i;
+
+	WRITE_RWA(7, 5);
+
+	dprintk("Slider base: ");
+	WRITE_RWA(0x61, 1);
+	i = inb(0x203);
+
+	WRITE_RWA(0x60, 2);
+	dprintk("%02X%02X (201)\n", inb(0x203), i);
+
+	WRITE_RWA(0x30, 1);
+}
+
+static inline void rwa010_waveartist_init(int base, int irq, int dma)
+{
+	int i;
+
+	WRITE_RWA(7, 0);
+
+	dprintk("WaveArtist base: ");
+	WRITE_RWA(0x61, base & 255);
+	i = inb(0x203);
+
+	WRITE_RWA(0x60, base >> 8);
+	dprintk("%02X%02X (%X),", inb(0x203), i, base);
+
+	WRITE_RWA(0x70, irq);
+	dprintk(" irq: %d (%d),", inb(0x203), irq);
+
+	WRITE_RWA(0x74, dma);
+	dprintk(" dma: %d (%d)\n", inb(0x203), dma);
+
+	WRITE_RWA(0x30, 1);
+}
+
+static inline void rwa010_soundblaster_init(int sb_base, int al_base, int irq, int dma)
+{
+	int i;
+
+	WRITE_RWA(7, 1);
+
+	dprintk("SoundBlaster base: ");
+	WRITE_RWA(0x61, sb_base & 255);
+	i = inb(0x203);
+
+	WRITE_RWA(0x60, sb_base >> 8);
+	dprintk("%02X%02X (%X),", inb(0x203), i, sb_base);
+
+	dprintk(" irq: ");
+	WRITE_RWA(0x70, irq);
+	dprintk("%d (%d),", inb(0x203), irq);
+
+	dprintk(" 8-bit DMA: ");
+	WRITE_RWA(0x74, dma);
+	dprintk("%d (%d)\n", inb(0x203), dma);
+
+	dprintk("AdLib base: ");
+	WRITE_RWA(0x63, al_base & 255);
+	i = inb(0x203);
+
+	WRITE_RWA(0x62, al_base >> 8);
+	dprintk("%02X%02X (%X)\n", inb(0x203), i, al_base);
+
+	WRITE_RWA(0x30, 1);
+}
+
+static void rwa010_soundblaster_reset(void)
+{
+	int i;
+
+	outb(1, 0x226);
+	udelay(3);
+	outb(0, 0x226);
+
+	for (i = 0; i < 5; i++) {
+		if (inb(0x22e) & 0x80)
+			break;
+		mdelay(1);
+	}
+	if (i == 5)
+		printk("SoundBlaster: DSP reset failed\n");
+
+	dprintk("SoundBlaster DSP reset: %02X (AA)\n", inb(0x22a));
+
+	for (i = 0; i < 5; i++) {
+		if ((inb(0x22c) & 0x80) == 0)
+			break;
+		mdelay(1);
+	}
+
+	if (i == 5)
+		printk("SoundBlaster: DSP not ready\n");
+	else {
+		outb(0xe1, 0x22c);
+
+		dprintk("SoundBlaster DSP id: ");
+		i = inb(0x22a);
+		udelay(1);
+		i |= inb(0x22a) << 8;
+		dprintk("%04X\n", i);
+
+		for (i = 0; i < 5; i++) {
+			if ((inb(0x22c) & 0x80) == 0)
+				break;
+			mdelay(1);
+		}
+
+		if (i == 5)
+			printk("SoundBlaster: could not turn speaker off\n");
+
+		outb(0xd3, 0x22c);
+	}
+
+	/* turn on OPL3 */
+	outb(5, 0x38a);
+	outb(1, 0x38b);
+}
+
+static void __init rwa010_init(void)
+{
+	rwa010_unlock();
+	rwa010_read_ident();
+	rwa010_global_init();
+	rwa010_game_port_init();
+	rwa010_waveartist_init(0x250, 3, 7);
+	rwa010_soundblaster_init(0x220, 0x388, 3, 1);
+	rwa010_soundblaster_reset();
+}
+
+/*
+ * Initialise any other hardware after we've got the PCI bus
+ * initialised.  We may need the PCI bus to talk to this other
+ * hardware.
+ */
+static int __init nw_hw_init(void)
+{
+	if (machine_is_netwinder()) {
+		wb977_init();
+		cpld_init();
+		rwa010_init();
+	}
+	return 0;
+}
+
+__initcall(nw_hw_init);
+
+/*
+ * Older NeTTroms either do not provide a parameters
+ * page, or they don't supply correct information in
+ * the parameter page.
+ */
+static void __init
+fixup_netwinder(struct tag *tags, char **cmdline)
+{
+#ifdef CONFIG_ISAPNP
+	extern int isapnp_disable;
+
+	/*
+	 * We must not use the kernels ISAPnP code
+	 * on the NetWinder - it will reset the settings
+	 * for the WaveArtist chip and render it inoperable.
+	 */
+	isapnp_disable = 1;
+#endif
+}
+
+static void netwinder_restart(enum reboot_mode mode, const char *cmd)
+{
+	if (mode == REBOOT_SOFT) {
+		/* Jump into the ROM */
+		soft_restart(0x41000000);
+	} else {
+		local_irq_disable();
+		local_fiq_disable();
+
+		/* open up the SuperIO chip */
+		outb(0x87, 0x370);
+		outb(0x87, 0x370);
+
+		/* aux function group 1 (logical device 7) */
+		outb(0x07, 0x370);
+		outb(0x07, 0x371);
+
+		/* set GP16 for WD-TIMER output */
+		outb(0xe6, 0x370);
+		outb(0x00, 0x371);
+
+		/* set a RED LED and toggle WD_TIMER for rebooting */
+		outb(0xc4, 0x338);
+	}
+}
+
+/* LEDs */
+#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
+struct netwinder_led {
+	struct led_classdev     cdev;
+	u8                      mask;
+};
+
+/*
+ * The triggers lines up below will only be used if the
+ * LED triggers are compiled in.
+ */
+static const struct {
+	const char *name;
+	const char *trigger;
+} netwinder_leds[] = {
+	{ "netwinder:green", "heartbeat", },
+	{ "netwinder:red", "cpu0", },
+};
+
+/*
+ * The LED control in Netwinder is reversed:
+ *  - setting bit means turn off LED
+ *  - clearing bit means turn on LED
+ */
+static void netwinder_led_set(struct led_classdev *cdev,
+		enum led_brightness b)
+{
+	struct netwinder_led *led = container_of(cdev,
+			struct netwinder_led, cdev);
+	unsigned long flags;
+	u32 reg;
+
+	raw_spin_lock_irqsave(&nw_gpio_lock, flags);
+	reg = nw_gpio_read();
+	if (b != LED_OFF)
+		reg &= ~led->mask;
+	else
+		reg |= led->mask;
+	nw_gpio_modify_op(led->mask, reg);
+	raw_spin_unlock_irqrestore(&nw_gpio_lock, flags);
+}
+
+static enum led_brightness netwinder_led_get(struct led_classdev *cdev)
+{
+	struct netwinder_led *led = container_of(cdev,
+			struct netwinder_led, cdev);
+	unsigned long flags;
+	u32 reg;
+
+	raw_spin_lock_irqsave(&nw_gpio_lock, flags);
+	reg = nw_gpio_read();
+	raw_spin_unlock_irqrestore(&nw_gpio_lock, flags);
+
+	return (reg & led->mask) ? LED_OFF : LED_FULL;
+}
+
+static int __init netwinder_leds_init(void)
+{
+	int i;
+
+	if (!machine_is_netwinder())
+		return -ENODEV;
+
+	for (i = 0; i < ARRAY_SIZE(netwinder_leds); i++) {
+		struct netwinder_led *led;
+
+		led = kzalloc(sizeof(*led), GFP_KERNEL);
+		if (!led)
+			break;
+
+		led->cdev.name = netwinder_leds[i].name;
+		led->cdev.brightness_set = netwinder_led_set;
+		led->cdev.brightness_get = netwinder_led_get;
+		led->cdev.default_trigger = netwinder_leds[i].trigger;
+
+		if (i == 0)
+			led->mask = GPIO_GREEN_LED;
+		else
+			led->mask = GPIO_RED_LED;
+
+		if (led_classdev_register(NULL, &led->cdev) < 0) {
+			kfree(led);
+			break;
+		}
+	}
+
+	return 0;
+}
+
+/*
+ * Since we may have triggers on any subsystem, defer registration
+ * until after subsystem_init.
+ */
+fs_initcall(netwinder_leds_init);
+#endif
+
+MACHINE_START(NETWINDER, "Rebel-NetWinder")
+	/* Maintainer: Russell King/Rebel.com */
+	.atag_offset	= 0x100,
+	.video_start	= 0x000a0000,
+	.video_end	= 0x000bffff,
+	.reserve_lp0	= 1,
+	.reserve_lp2	= 1,
+	.fixup		= fixup_netwinder,
+	.map_io		= footbridge_map_io,
+	.init_irq	= footbridge_init_irq,
+	.init_time	= isa_timer_init,
+	.restart	= netwinder_restart,
+MACHINE_END