Merge branch 'spi/merge' into spi/next

CREDITS

@@ -518,6 +518,14 @@ N: Zach Brown
 E: zab@zabbo.net
 D: maestro pci sound
 
+M: David Brownell
+D: Kernel engineer, mentor, and friend.  Maintained USB EHCI and
+D: gadget layers, SPI subsystem, GPIO subsystem, and more than a few
+D: device drivers.  His encouragement also helped many engineers get
+D: started working on the Linux kernel.  David passed away in early
+D: 2011, and will be greatly missed.
+W: https://lkml.org/lkml/2011/4/5/36
+
 N: Gary Brubaker
 E: xavyer@ix.netcom.com
 D: USB Serial Empeg Empeg-car Mark I/II Driver

Documentation/kernel-parameters.txt

@@ -2598,6 +2598,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 					unlock ejectable media);
 				m = MAX_SECTORS_64 (don't transfer more
 					than 64 sectors = 32 KB at a time);
+				n = INITIAL_READ10 (force a retry of the
+					initial READ(10) command);
 				o = CAPACITY_OK (accept the capacity
 					reported by the device);
 				r = IGNORE_RESIDUE (the device reports

MAINTAINERS

@@ -1739,7 +1739,7 @@ S:	Supported
 F:	drivers/net/enic/
 
 CIRRUS LOGIC EP93XX ETHERNET DRIVER
-M:	Lennert Buytenhek <kernel@wantstofly.org>
+M:	Hartley Sweeten <hsweeten@visionengravers.com>
 L:	netdev@vger.kernel.org
 S:	Maintained
 F:	drivers/net/arm/ep93xx_eth.c
@@ -4252,8 +4252,7 @@ F:	drivers/mmc/
 F:	include/linux/mmc/
 
 MULTIMEDIA CARD (MMC) ETC. OVER SPI
-M:	David Brownell <dbrownell@users.sourceforge.net>
+S:	Orphan
-S:	Odd Fixes
 F:	drivers/mmc/host/mmc_spi.c
 F:	include/linux/spi/mmc_spi.h
 
@@ -4603,7 +4602,6 @@ F:	drivers/media/video/omap3isp/*
 
 OMAP USB SUPPORT
 M:	Felipe Balbi <balbi@ti.com>
-M:	David Brownell <dbrownell@users.sourceforge.net>
 L:	linux-usb@vger.kernel.org
 L:	linux-omap@vger.kernel.org
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git
@@ -4947,6 +4945,7 @@ T:	git git://git.kernel.org/pub/scm/linux/kernel/git/epip/linux-2.6-unicore32.gi
 F:	drivers/input/serio/i8042-unicore32io.h
 F:	drivers/i2c/busses/i2c-puv3.c
 F:	drivers/video/fb-puv3.c
+F:	drivers/rtc/rtc-puv3.c
 
 PMC SIERRA MaxRAID DRIVER
 M:	Anil Ravindranath <anil_ravindranath@pmc-sierra.com>
@@ -5984,7 +5983,6 @@ F:	Documentation/serial/specialix.txt
 F:	drivers/staging/tty/specialix*
 
 SPI SUBSYSTEM
-M:	David Brownell <dbrownell@users.sourceforge.net>
 M:	Grant Likely <grant.likely@secretlab.ca>
 L:	spi-devel-general@lists.sourceforge.net
 Q:	http://patchwork.kernel.org/project/spi-devel-general/list/
@@ -6432,9 +6430,8 @@ S:	Maintained
 F:	drivers/usb/misc/rio500*
 
 USB EHCI DRIVER
-M:	David Brownell <dbrownell@users.sourceforge.net>
 L:	linux-usb@vger.kernel.org
-S:	Odd Fixes
+S:	Orphan
 F:	Documentation/usb/ehci.txt
 F:	drivers/usb/host/ehci*
 
@@ -6448,9 +6445,10 @@ S:	Maintained
 F:	drivers/media/video/et61x251/
 
 USB GADGET/PERIPHERAL SUBSYSTEM
-M:	David Brownell <dbrownell@users.sourceforge.net>
+M:	Felipe Balbi <balbi@ti.com>
 L:	linux-usb@vger.kernel.org
 W:	http://www.linux-usb.org/gadget
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git
 S:	Maintained
 F:	drivers/usb/gadget/
 F:	include/linux/usb/gadget*
@@ -6492,9 +6490,8 @@ S:	Maintained
 F:	sound/usb/midi.*
 
 USB OHCI DRIVER
-M:	David Brownell <dbrownell@users.sourceforge.net>
 L:	linux-usb@vger.kernel.org
-S:	Odd Fixes
+S:	Orphan
 F:	Documentation/usb/ohci.txt
 F:	drivers/usb/host/ohci*
 

Makefile

@@ -1,7 +1,7 @@
 VERSION = 3
 PATCHLEVEL = 0
 SUBLEVEL = 0
-EXTRAVERSION = -rc2
+EXTRAVERSION = -rc3
 NAME = Sneaky Weasel
 
 # *DOCUMENTATION*
@@ -378,7 +378,7 @@ KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
 
 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
-KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
+KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
 
 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
@@ -1005,7 +1005,7 @@ endef
 
 define filechk_version.h
 	(echo \#define LINUX_VERSION_CODE $(shell                             \
-	expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL));     \
+	expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL));    \
 	echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
 endef
 
@@ -1110,11 +1110,6 @@ modules_install: _modinst_ _modinst_post
 
 PHONY += _modinst_
 _modinst_:
-	@if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
-		echo "Warning: you may need to install module-init-tools"; \
-		echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\
-		sleep 1; \
-	fi
 	@rm -rf $(MODLIB)/kernel
 	@rm -f $(MODLIB)/source
 	@mkdir -p $(MODLIB)/kernel
@@ -1531,12 +1526,7 @@ quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files))
 
 # Run depmod only if we have System.map and depmod is executable
 quiet_cmd_depmod = DEPMOD  $(KERNELRELEASE)
-      cmd_depmod = \
+      cmd_depmod = $(srctree)/scripts/depmod.sh $(DEPMOD) $(KERNELRELEASE)
-	if [ -r System.map -a -x $(DEPMOD) ]; then                              \
-		$(DEPMOD) -ae -F System.map                                     \
-		$(if $(strip $(INSTALL_MOD_PATH)), -b $(INSTALL_MOD_PATH) )     \
-		$(KERNELRELEASE);                                               \
-	fi
 
 # Create temporary dir for module support files
 # clean it up only when building all modules

arch/arm/mach-ep93xx/core.c

@@ -402,11 +402,15 @@ static struct resource ep93xx_eth_resource[] = {
 	}
 };
 
+static u64 ep93xx_eth_dma_mask = DMA_BIT_MASK(32);
+
 static struct platform_device ep93xx_eth_device = {
 	.name		= "ep93xx-eth",
 	.id		= -1,
 	.dev		= {
-		.platform_data	= &ep93xx_eth_data,
+		.platform_data		= &ep93xx_eth_data,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+		.dma_mask		= &ep93xx_eth_dma_mask,
 	},
 	.num_resources	= ARRAY_SIZE(ep93xx_eth_resource),
 	.resource	= ep93xx_eth_resource,

arch/arm/mach-exynos4/Kconfig

@@ -91,6 +91,11 @@ config EXYNOS4_SETUP_FIMC
 	help
 	  Common setup code for the camera interfaces.
 
+config EXYNOS4_SETUP_USB_PHY
+	bool
+	help
+	  Common setup code for USB PHY controller
+
 # machine support
 
 menu "EXYNOS4 Machines"
@@ -176,6 +181,7 @@ config MACH_NURI
 	select EXYNOS4_SETUP_I2C3
 	select EXYNOS4_SETUP_I2C5
 	select EXYNOS4_SETUP_SDHCI
+	select EXYNOS4_SETUP_USB_PHY
 	select SAMSUNG_DEV_PWM
 	help
 	  Machine support for Samsung Mobile NURI Board.

arch/arm/mach-exynos4/Makefile

@@ -56,4 +56,4 @@ obj-$(CONFIG_EXYNOS4_SETUP_KEYPAD)	+= setup-keypad.o
 obj-$(CONFIG_EXYNOS4_SETUP_SDHCI)	+= setup-sdhci.o
 obj-$(CONFIG_EXYNOS4_SETUP_SDHCI_GPIO)	+= setup-sdhci-gpio.o
 
-obj-$(CONFIG_USB_SUPPORT)		+= usb-phy.o
+obj-$(CONFIG_EXYNOS4_SETUP_USB_PHY)	+= setup-usb-phy.o

arch/arm/mach-exynos4/cpu.c

@@ -98,7 +98,7 @@ static struct map_desc exynos4_iodesc[] __initdata = {
 		.length		= SZ_4K,
 		.type		= MT_DEVICE,
 	}, {
-		.virtual	= (unsigned long)S5P_VA_USB_HSPHY,
+		.virtual	= (unsigned long)S3C_VA_USB_HSPHY,
 		.pfn		= __phys_to_pfn(EXYNOS4_PA_HSPHY),
 		.length		= SZ_4K,
 		.type		= MT_DEVICE,

arch/arm/mach-exynos4/include/mach/regs-usb-phy.h

@@ -11,7 +11,7 @@
 #ifndef __PLAT_S5P_REGS_USB_PHY_H
 #define __PLAT_S5P_REGS_USB_PHY_H
 
-#define EXYNOS4_HSOTG_PHYREG(x)		((x) + S5P_VA_USB_HSPHY)
+#define EXYNOS4_HSOTG_PHYREG(x)		((x) + S3C_VA_USB_HSPHY)
 
 #define EXYNOS4_PHYPWR			EXYNOS4_HSOTG_PHYREG(0x00)
 #define PHY1_HSIC_NORMAL_MASK		(0xf << 9)

arch/arm/mach-exynos4/time.c

@@ -206,6 +206,7 @@ static cycle_t exynos4_pwm4_read(struct clocksource *cs)
 	return (cycle_t) ~__raw_readl(S3C_TIMERREG(0x40));
 }
 
+#ifdef CONFIG_PM
 static void exynos4_pwm4_resume(struct clocksource *cs)
 {
 	unsigned long pclk;
@@ -218,6 +219,7 @@ static void exynos4_pwm4_resume(struct clocksource *cs)
 	exynos4_pwm_init(4, ~0);
 	exynos4_pwm_start(4, 1);
 }
+#endif
 
 struct clocksource pwm_clocksource = {
 	.name		= "pwm_timer4",

arch/arm/mach-omap1/dma.c

@@ -284,14 +284,15 @@ static int __init omap1_system_dma_init(void)
 	dma_base = ioremap(res[0].start, resource_size(&res[0]));
 	if (!dma_base) {
 		pr_err("%s: Unable to ioremap\n", __func__);
-		return -ENODEV;
+		ret = -ENODEV;
+		goto exit_device_put;
 	}
 
 	ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
 	if (ret) {
 		dev_err(&pdev->dev, "%s: Unable to add resources for %s%d\n",
 			__func__, pdev->name, pdev->id);
-		goto exit_device_del;
+		goto exit_device_put;
 	}
 
 	p = kzalloc(sizeof(struct omap_system_dma_plat_info), GFP_KERNEL);
@@ -299,7 +300,7 @@ static int __init omap1_system_dma_init(void)
 		dev_err(&pdev->dev, "%s: Unable to allocate 'p' for %s\n",
 			__func__, pdev->name);
 		ret = -ENOMEM;
-		goto exit_device_put;
+		goto exit_device_del;
 	}
 
 	d = kzalloc(sizeof(struct omap_dma_dev_attr), GFP_KERNEL);
@@ -380,10 +381,10 @@ exit_release_d:
 	kfree(d);
 exit_release_p:
 	kfree(p);
-exit_device_put:
-	platform_device_put(pdev);
 exit_device_del:
 	platform_device_del(pdev);
+exit_device_put:
+	platform_device_put(pdev);
 
 	return ret;
 }

arch/arm/mach-omap2/board-2430sdp.c

@@ -26,13 +26,13 @@
 #include <linux/err.h>
 #include <linux/clk.h>
 #include <linux/io.h>
+#include <linux/gpio.h>
 
 #include <mach/hardware.h>
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 
-#include <mach/gpio.h>
 #include <plat/board.h>
 #include <plat/common.h>
 #include <plat/gpmc.h>

arch/arm/mach-omap2/board-3430sdp.c

@@ -622,19 +622,19 @@ static struct omap_device_pad serial3_pads[] __initdata = {
 			 OMAP_MUX_MODE0),
 };
 
-static struct omap_board_data serial1_data = {
+static struct omap_board_data serial1_data __initdata = {
 	.id		= 0,
 	.pads		= serial1_pads,
 	.pads_cnt	= ARRAY_SIZE(serial1_pads),
 };
 
-static struct omap_board_data serial2_data = {
+static struct omap_board_data serial2_data __initdata = {
 	.id		= 1,
 	.pads		= serial2_pads,
 	.pads_cnt	= ARRAY_SIZE(serial2_pads),
 };
 
-static struct omap_board_data serial3_data = {
+static struct omap_board_data serial3_data __initdata = {
 	.id		= 2,
 	.pads		= serial3_pads,
 	.pads_cnt	= ARRAY_SIZE(serial3_pads),

arch/arm/mach-omap2/board-4430sdp.c

@@ -258,7 +258,7 @@ static struct gpio sdp4430_eth_gpios[] __initdata = {
 	{ ETH_KS8851_IRQ,	GPIOF_IN,		"eth_irq"	},
 };
 
-static int omap_ethernet_init(void)
+static int __init omap_ethernet_init(void)
 {
 	int status;
 
@@ -322,6 +322,7 @@ static struct omap2_hsmmc_info mmc[] = {
 		.gpio_wp	= -EINVAL,
 		.nonremovable   = true,
 		.ocr_mask	= MMC_VDD_29_30,
+		.no_off_init	= true,
 	},
 	{
 		.mmc		= 1,
@@ -681,19 +682,19 @@ static struct omap_device_pad serial4_pads[] __initdata = {
 			 OMAP_PIN_OUTPUT | OMAP_MUX_MODE0),
 };
 
-static struct omap_board_data serial2_data = {
+static struct omap_board_data serial2_data __initdata = {
 	.id		= 1,
 	.pads		= serial2_pads,
 	.pads_cnt	= ARRAY_SIZE(serial2_pads),
 };
 
-static struct omap_board_data serial3_data = {
+static struct omap_board_data serial3_data __initdata = {
 	.id		= 2,
 	.pads		= serial3_pads,
 	.pads_cnt	= ARRAY_SIZE(serial3_pads),
 };
 
-static struct omap_board_data serial4_data = {
+static struct omap_board_data serial4_data __initdata = {
 	.id		= 3,
 	.pads		= serial4_pads,
 	.pads_cnt	= ARRAY_SIZE(serial4_pads),
@@ -729,7 +730,7 @@ static void __init omap_4430sdp_init(void)
 
 	if (omap_rev() == OMAP4430_REV_ES1_0)
 		package = OMAP_PACKAGE_CBL;
-	omap4_mux_init(board_mux, package);
+	omap4_mux_init(board_mux, NULL, package);
 
 	omap_board_config = sdp4430_config;
 	omap_board_config_size = ARRAY_SIZE(sdp4430_config);

arch/arm/mach-omap2/board-apollon.c

@@ -27,13 +27,13 @@
 #include <linux/err.h>
 #include <linux/clk.h>
 #include <linux/smc91x.h>
+#include <linux/gpio.h>
 
 #include <mach/hardware.h>
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/flash.h>
 
-#include <mach/gpio.h>
 #include <plat/led.h>
 #include <plat/usb.h>
 #include <plat/board.h>

arch/arm/mach-omap2/board-cm-t35.c

@@ -63,8 +63,6 @@
 #define SB_T35_SMSC911X_CS	4
 #define SB_T35_SMSC911X_GPIO	65
 
-#define NAND_BLOCK_SIZE		SZ_128K
-
 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
 #include <linux/smsc911x.h>
 #include <plat/gpmc-smsc911x.h>

arch/arm/mach-omap2/board-cm-t3517.c

@@ -48,6 +48,7 @@
 
 #include "mux.h"
 #include "control.h"
+#include "common-board-devices.h"
 
 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
 static struct gpio_led cm_t3517_leds[] = {
@@ -177,7 +178,7 @@ static struct usbhs_omap_board_data cm_t3517_ehci_pdata __initdata = {
 	.reset_gpio_port[2]  = -EINVAL,
 };
 
-static int cm_t3517_init_usbh(void)
+static int __init cm_t3517_init_usbh(void)
 {
 	int err;
 
@@ -203,8 +204,6 @@ static inline int cm_t3517_init_usbh(void)
 #endif
 
 #if defined(CONFIG_MTD_NAND_OMAP2) || defined(CONFIG_MTD_NAND_OMAP2_MODULE)
-#define NAND_BLOCK_SIZE		SZ_128K
-
 static struct mtd_partition cm_t3517_nand_partitions[] = {
 	{
 		.name           = "xloader",

arch/arm/mach-omap2/board-devkit8000.c

@@ -61,8 +61,6 @@
 #include "timer-gp.h"
 #include "common-board-devices.h"
 
-#define NAND_BLOCK_SIZE		SZ_128K
-
 #define OMAP_DM9000_GPIO_IRQ	25
 #define OMAP3_DEVKIT_TS_GPIO	27
 

arch/arm/mach-omap2/board-omap3beagle.c

@@ -54,8 +54,6 @@
 #include "pm.h"
 #include "common-board-devices.h"
 
-#define NAND_BLOCK_SIZE		SZ_128K
-
 /*
  * OMAP3 Beagle revision
  * Run time detection of Beagle revision is done by reading GPIO.
@@ -106,6 +104,9 @@ static void __init omap3_beagle_init_rev(void)
 	beagle_rev = gpio_get_value(171) | (gpio_get_value(172) << 1)
 			| (gpio_get_value(173) << 2);
 
+	gpio_free_array(omap3_beagle_rev_gpios,
+			ARRAY_SIZE(omap3_beagle_rev_gpios));
+
 	switch (beagle_rev) {
 	case 7:
 		printk(KERN_INFO "OMAP3 Beagle Rev: Ax/Bx\n");
@@ -579,6 +580,9 @@ static void __init omap3_beagle_init(void)
 	omap_nand_flash_init(NAND_BUSWIDTH_16, omap3beagle_nand_partitions,
 			     ARRAY_SIZE(omap3beagle_nand_partitions));
 
+	/* Ensure msecure is mux'd to be able to set the RTC. */
+	omap_mux_init_signal("sys_drm_msecure", OMAP_PIN_OFF_OUTPUT_HIGH);
+
 	/* Ensure SDRC pins are mux'd for self-refresh */
 	omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 	omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);

arch/arm/mach-omap2/board-omap3pandora.c

@@ -30,6 +30,7 @@
 #include <linux/leds.h>
 #include <linux/input.h>
 #include <linux/input/matrix_keypad.h>
+#include <linux/gpio.h>
 #include <linux/gpio_keys.h>
 #include <linux/mmc/host.h>
 #include <linux/mmc/card.h>
@@ -41,7 +42,6 @@
 
 #include <plat/board.h>
 #include <plat/common.h>
-#include <mach/gpio.h>
 #include <mach/hardware.h>
 #include <plat/mcspi.h>
 #include <plat/usb.h>
@@ -57,8 +57,6 @@
 #define PANDORA_WIFI_NRESET_GPIO	23
 #define OMAP3_PANDORA_TS_GPIO		94
 
-#define NAND_BLOCK_SIZE			SZ_128K
-
 static struct mtd_partition omap3pandora_nand_partitions[] = {
 	{
 		.name           = "xloader",

arch/arm/mach-omap2/board-omap3touchbook.c

@@ -56,8 +56,6 @@
 
 #include <asm/setup.h>
 
-#define NAND_BLOCK_SIZE		SZ_128K
-
 #define OMAP3_AC_GPIO		136
 #define OMAP3_TS_GPIO		162
 #define TB_BL_PWM_TIMER		9

arch/arm/mach-omap2/board-omap4panda.c

@@ -526,19 +526,19 @@ static struct omap_device_pad serial4_pads[] __initdata = {
 			 OMAP_PIN_OUTPUT | OMAP_MUX_MODE0),
 };
 
-static struct omap_board_data serial2_data = {
+static struct omap_board_data serial2_data __initdata = {
 	.id             = 1,
 	.pads           = serial2_pads,
 	.pads_cnt       = ARRAY_SIZE(serial2_pads),
 };
 
-static struct omap_board_data serial3_data = {
+static struct omap_board_data serial3_data __initdata = {
 	.id             = 2,
 	.pads           = serial3_pads,
 	.pads_cnt       = ARRAY_SIZE(serial3_pads),
 };
 
-static struct omap_board_data serial4_data = {
+static struct omap_board_data serial4_data __initdata = {
 	.id             = 3,
 	.pads           = serial4_pads,
 	.pads_cnt       = ARRAY_SIZE(serial4_pads),
@@ -687,7 +687,7 @@ static void __init omap4_panda_init(void)
 
 	if (omap_rev() == OMAP4430_REV_ES1_0)
 		package = OMAP_PACKAGE_CBL;
-	omap4_mux_init(board_mux, package);
+	omap4_mux_init(board_mux, NULL, package);
 
 	if (wl12xx_set_platform_data(&omap_panda_wlan_data))
 		pr_err("error setting wl12xx data\n");

arch/arm/mach-omap2/board-overo.c

@@ -24,6 +24,7 @@
 #include <linux/err.h>
 #include <linux/init.h>
 #include <linux/io.h>
+#include <linux/gpio.h>
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
 #include <linux/i2c/twl.h>
@@ -45,7 +46,6 @@
 #include <plat/common.h>
 #include <video/omapdss.h>
 #include <video/omap-panel-generic-dpi.h>
-#include <mach/gpio.h>
 #include <plat/gpmc.h>
 #include <mach/hardware.h>
 #include <plat/nand.h>
@@ -65,8 +65,6 @@
 #define OVERO_GPIO_USBH_CPEN	168
 #define OVERO_GPIO_USBH_NRESET	183
 
-#define NAND_BLOCK_SIZE SZ_128K
-
 #define OVERO_SMSC911X_CS      5
 #define OVERO_SMSC911X_GPIO    176
 #define OVERO_SMSC911X2_CS     4

arch/arm/mach-omap2/board-rx51-peripherals.c

@@ -488,6 +488,7 @@ static struct regulator_init_data rx51_vmmc2 = {
 		.name			= "V28_A",
 		.min_uV			= 2800000,
 		.max_uV			= 3000000,
+		.always_on		= true, /* due VIO leak to AIC34 VDDs */
 		.apply_uV		= true,
 		.valid_modes_mask	= REGULATOR_MODE_NORMAL
 					| REGULATOR_MODE_STANDBY,
@@ -582,7 +583,7 @@ static int rx51_twlgpio_setup(struct device *dev, unsigned gpio, unsigned n)
 {
 	/* FIXME this gpio setup is just a placeholder for now */
 	gpio_request_one(gpio + 6, GPIOF_OUT_INIT_LOW, "backlight_pwm");
-	gpio_request_one(gpio + 7, GPIOF_OUT_INIT_HIGH, "speaker_en");
+	gpio_request_one(gpio + 7, GPIOF_OUT_INIT_LOW, "speaker_en");
 
 	return 0;
 }

arch/arm/mach-omap2/board-zoom-display.c

@@ -26,7 +26,7 @@ static struct gpio zoom_lcd_gpios[] __initdata = {
 	{ LCD_PANEL_QVGA_GPIO,	GPIOF_OUT_INIT_HIGH, "lcd qvga"	 },
 };
 
-static void zoom_lcd_panel_init(void)
+static void __init zoom_lcd_panel_init(void)
 {
 	zoom_lcd_gpios[0].gpio = (omap_rev() > OMAP3430_REV_ES3_0) ?
 			LCD_PANEL_RESET_GPIO_PROD :

arch/arm/mach-omap2/common-board-devices.c

@@ -85,18 +85,18 @@ void __init omap_ads7846_init(int bus_num, int gpio_pendown, int gpio_debounce,
 	struct spi_board_info *spi_bi = &ads7846_spi_board_info;
 	int err;
 
-	err = gpio_request(gpio_pendown, "TS PenDown");
+	if (board_pdata && board_pdata->get_pendown_state) {
-	if (err) {
+		err = gpio_request_one(gpio_pendown, GPIOF_IN, "TSPenDown");
-		pr_err("Could not obtain gpio for TS PenDown: %d\n", err);
+		if (err) {
-		return;
+			pr_err("Couldn't obtain gpio for TSPenDown: %d\n", err);
+			return;
+		}
+		gpio_export(gpio_pendown, 0);
+
+		if (gpio_debounce)
+			gpio_set_debounce(gpio_pendown, gpio_debounce);
 	}
 
-	gpio_direction_input(gpio_pendown);
-	gpio_export(gpio_pendown, 0);
-
-	if (gpio_debounce)
-		gpio_set_debounce(gpio_pendown, gpio_debounce);
-
 	ads7846_config.gpio_pendown = gpio_pendown;
 
 	spi_bi->bus_num	= bus_num;

arch/arm/mach-omap2/common-board-devices.h

@@ -1,6 +1,8 @@
 #ifndef __OMAP_COMMON_BOARD_DEVICES__
 #define __OMAP_COMMON_BOARD_DEVICES__
 
+#define NAND_BLOCK_SIZE	SZ_128K
+
 struct twl4030_platform_data;
 struct mtd_partition;
 

arch/arm/mach-omap2/devices.c

@@ -97,7 +97,7 @@ static int __init omap4_l3_init(void)
 
 	WARN(IS_ERR(od), "could not build omap_device for %s\n", oh_name);
 
-	return PTR_ERR(od);
+	return IS_ERR(od) ? PTR_ERR(od) : 0;
 }
 postcore_initcall(omap4_l3_init);
 

arch/arm/mach-omap2/hsmmc.c

@@ -145,6 +145,7 @@ static void omap4_hsmmc1_after_set_reg(struct device *dev, int slot,
 				 int power_on, int vdd)
 {
 	u32 reg;
+	unsigned long timeout;
 
 	if (power_on) {
 		reg = omap4_ctrl_pad_readl(control_pbias_offset);
@@ -157,9 +158,15 @@ static void omap4_hsmmc1_after_set_reg(struct device *dev, int slot,
 			OMAP4_MMC1_PWRDNZ_MASK |
 			OMAP4_USBC1_ICUSB_PWRDNZ_MASK);
 		omap4_ctrl_pad_writel(reg, control_pbias_offset);
-		/* 4 microsec delay for comparator to generate an error*/
+
-		udelay(4);
+		timeout = jiffies + msecs_to_jiffies(5);
-		reg = omap4_ctrl_pad_readl(control_pbias_offset);
+		do {
+			reg = omap4_ctrl_pad_readl(control_pbias_offset);
+			if (!(reg & OMAP4_MMC1_PBIASLITE_VMODE_ERROR_MASK))
+				break;
+			usleep_range(100, 200);
+		} while (!time_after(jiffies, timeout));
+
 		if (reg & OMAP4_MMC1_PBIASLITE_VMODE_ERROR_MASK) {
 			pr_err("Pbias Voltage is not same as LDO\n");
 			/* Caution : On VMODE_ERROR Power Down MMC IO */
@@ -331,6 +338,9 @@ static int __init omap_hsmmc_pdata_init(struct omap2_hsmmc_info *c,
 	if (c->no_off)
 		mmc->slots[0].no_off = 1;
 
+	if (c->no_off_init)
+		mmc->slots[0].no_regulator_off_init = c->no_off_init;
+
 	if (c->vcc_aux_disable_is_sleep)
 		mmc->slots[0].vcc_aux_disable_is_sleep = 1;
 

arch/arm/mach-omap2/hsmmc.h

@@ -18,6 +18,7 @@ struct omap2_hsmmc_info {
 	bool	nonremovable;	/* Nonremovable e.g. eMMC */
 	bool	power_saving;	/* Try to sleep or power off when possible */
 	bool	no_off;		/* power_saving and power is not to go off */
+	bool	no_off_init;	/* no power off when not in MMC sleep state */
 	bool	vcc_aux_disable_is_sleep; /* Regulator off remapped to sleep */
 	int	gpio_cd;	/* or -EINVAL */
 	int	gpio_wp;	/* or -EINVAL */

arch/arm/mach-omap2/mux.c

@@ -83,6 +83,9 @@ void omap_mux_write(struct omap_mux_partition *partition, u16 val,
 void omap_mux_write_array(struct omap_mux_partition *partition,
 				 struct omap_board_mux *board_mux)
 {
+	if (!board_mux)
+		return;
+
 	while (board_mux->reg_offset != OMAP_MUX_TERMINATOR) {
 		omap_mux_write(partition, board_mux->value,
 			       board_mux->reg_offset);
@@ -906,7 +909,7 @@ static struct omap_mux *omap_mux_get_by_gpio(
 u16 omap_mux_get_gpio(int gpio)
 {
 	struct omap_mux_partition *partition;
-	struct omap_mux *m;
+	struct omap_mux *m = NULL;
 
 	list_for_each_entry(partition, &mux_partitions, node) {
 		m = omap_mux_get_by_gpio(partition, gpio);

arch/arm/mach-omap2/mux.h

@@ -323,10 +323,12 @@ int omap3_mux_init(struct omap_board_mux *board_mux, int flags);
 
 /**
  * omap4_mux_init() - initialize mux system with board specific set
- * @board_mux:		Board specific mux table
+ * @board_subset:	Board specific mux table
+ * @board_wkup_subset:	Board specific mux table for wakeup instance
  * @flags:		OMAP package type used for the board
  */
-int omap4_mux_init(struct omap_board_mux *board_mux, int flags);
+int omap4_mux_init(struct omap_board_mux *board_subset,
+	struct omap_board_mux *board_wkup_subset, int flags);
 
 /**
  * omap_mux_init - private mux init function, do not call

arch/arm/mach-omap2/mux44xx.c

@@ -1309,7 +1309,8 @@ static struct omap_ball __initdata omap4_wkup_cbl_cbs_ball[] = {
 #define omap4_wkup_cbl_cbs_ball  NULL
 #endif
 
-int __init omap4_mux_init(struct omap_board_mux *board_subset, int flags)
+int __init omap4_mux_init(struct omap_board_mux *board_subset,
+	struct omap_board_mux *board_wkup_subset, int flags)
 {
 	struct omap_ball *package_balls_core;
 	struct omap_ball *package_balls_wkup = omap4_wkup_cbl_cbs_ball;
@@ -1347,7 +1348,7 @@ int __init omap4_mux_init(struct omap_board_mux *board_subset, int flags)
 			    OMAP_MUX_GPIO_IN_MODE3,
 			    OMAP4_CTRL_MODULE_PAD_WKUP_MUX_PBASE,
 			    OMAP4_CTRL_MODULE_PAD_WKUP_MUX_SIZE,
-			    omap4_wkup_muxmodes, NULL, board_subset,
+			    omap4_wkup_muxmodes, NULL, board_wkup_subset,
 			    package_balls_wkup);
 
 	return ret;

arch/arm/mach-omap2/omap_hwmod.c

@@ -1628,7 +1628,7 @@ int omap_hwmod_for_each(int (*fn)(struct omap_hwmod *oh, void *data),
 			void *data)
 {
 	struct omap_hwmod *temp_oh;
-	int ret;
+	int ret = 0;
 
 	if (!fn)
 		return -EINVAL;

arch/arm/mach-omap2/omap_hwmod_44xx_data.c

@@ -5109,7 +5109,7 @@ static __initdata struct omap_hwmod *omap44xx_hwmods[] = {
 	&omap44xx_iva_seq1_hwmod,
 
 	/* kbd class */
-/*	&omap44xx_kbd_hwmod, */
+	&omap44xx_kbd_hwmod,
 
 	/* mailbox class */
 	&omap44xx_mailbox_hwmod,

arch/arm/mach-omap2/omap_phy_internal.c

@@ -56,8 +56,10 @@ int omap4430_phy_init(struct device *dev)
 	/* Power down the phy */
 	__raw_writel(PHY_PD, ctrl_base + CONTROL_DEV_CONF);
 
-	if (!dev)
+	if (!dev) {
+		iounmap(ctrl_base);
 		return 0;
+	}
 
 	phyclk = clk_get(dev, "ocp2scp_usb_phy_ick");
 	if (IS_ERR(phyclk)) {

arch/arm/mach-s3c2410/Makefile

@@ -10,7 +10,6 @@ obj-n				:=
 obj-				:=
 
 obj-$(CONFIG_CPU_S3C2410)	+= s3c2410.o
-obj-$(CONFIG_CPU_S3C2410)	+= irq.o
 obj-$(CONFIG_CPU_S3C2410_DMA)	+= dma.o
 obj-$(CONFIG_CPU_S3C2410_DMA)	+= dma.o
 obj-$(CONFIG_S3C2410_PM)	+= pm.o sleep.o

arch/arm/mach-s3c2410/irq.c

@@ -1,34 +0,0 @@
-/* linux/arch/arm/mach-s3c2410/irq.c
- *
- * Copyright (c) 2006 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * 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/init.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/syscore_ops.h>
-
-#include <plat/cpu.h>
-#include <plat/pm.h>
-
-struct syscore_ops s3c24xx_irq_syscore_ops = {
-	.suspend	= s3c24xx_irq_suspend,
-	.resume		= s3c24xx_irq_resume,
-};

arch/arm/mach-s5pv210/cpufreq.c

@@ -101,12 +101,14 @@ static void s5pv210_set_refresh(enum s5pv210_dmc_port ch, unsigned long freq)
 	unsigned long tmp, tmp1;
 	void __iomem *reg = NULL;
 
-	if (ch == DMC0)
+	if (ch == DMC0) {
 		reg = (S5P_VA_DMC0 + 0x30);
-	else if (ch == DMC1)
+	} else if (ch == DMC1) {
 		reg = (S5P_VA_DMC1 + 0x30);
-	else
+	} else {
 		printk(KERN_ERR "Cannot find DMC port\n");
+		return;
+	}
 
 	/* Find current DRAM frequency */
 	tmp = s5pv210_dram_conf[ch].freq;

arch/arm/mach-ux500/cpu-db8500.c

@@ -159,6 +159,9 @@ static void __init db8500_add_gpios(void)
 		/* No custom data yet */
 	};
 
+	if (cpu_is_u8500v2())
+		pdata.supports_sleepmode = true;
+
 	dbx500_add_gpios(ARRAY_AND_SIZE(db8500_gpio_base),
 			 IRQ_DB8500_GPIO0, &pdata);
 }

arch/arm/plat-nomadik/include/plat/gpio.h

@@ -90,6 +90,7 @@ struct nmk_gpio_platform_data {
 	int num_gpio;
 	u32 (*get_secondary_status)(unsigned int bank);
 	void (*set_ioforce)(bool enable);
+	bool supports_sleepmode;
 };
 
 #endif /* __ASM_PLAT_GPIO_H */

arch/arm/plat-omap/include/plat/flash.h

@@ -11,6 +11,7 @@
 
 #include <linux/mtd/map.h>
 
+struct platform_device;
 extern void omap1_set_vpp(struct platform_device *pdev, int enable);
 
 #endif

arch/arm/plat-omap/include/plat/iovmm.h

@@ -29,9 +29,6 @@ struct iovm_struct {
  * lower 16 bit is used for h/w and upper 16 bit is for s/w.
  */
 #define IOVMF_SW_SHIFT		16
-#define IOVMF_HW_SIZE		(1 << IOVMF_SW_SHIFT)
-#define IOVMF_HW_MASK		(IOVMF_HW_SIZE - 1)
-#define IOVMF_SW_MASK		(~IOVMF_HW_MASK)UL
 
 /*
  * iovma: h/w flags derived from cam and ram attribute

arch/arm/plat-omap/include/plat/mmc.h

@@ -101,6 +101,9 @@ struct omap_mmc_platform_data {
 		/* If using power_saving and the MMC power is not to go off */
 		unsigned no_off:1;
 
+		/* eMMC does not handle power off when not in sleep state */
+		unsigned no_regulator_off_init:1;
+
 		/* Regulator off remapped to sleep */
 		unsigned vcc_aux_disable_is_sleep:1;
 

arch/arm/plat-omap/iovmm.c

@@ -648,7 +648,6 @@ u32 iommu_vmap(struct iommu *obj, u32 da, const struct sg_table *sgt,
 			return PTR_ERR(va);
 	}
 
-	flags &= IOVMF_HW_MASK;
 	flags |= IOVMF_DISCONT;
 	flags |= IOVMF_MMIO;
 
@@ -706,7 +705,6 @@ u32 iommu_vmalloc(struct iommu *obj, u32 da, size_t bytes, u32 flags)
 	if (!va)
 		return -ENOMEM;
 
-	flags &= IOVMF_HW_MASK;
 	flags |= IOVMF_DISCONT;
 	flags |= IOVMF_ALLOC;
 
@@ -795,7 +793,6 @@ u32 iommu_kmap(struct iommu *obj, u32 da, u32 pa, size_t bytes,
 	if (!va)
 		return -ENOMEM;
 
-	flags &= IOVMF_HW_MASK;
 	flags |= IOVMF_LINEAR;
 	flags |= IOVMF_MMIO;
 
@@ -853,7 +850,6 @@ u32 iommu_kmalloc(struct iommu *obj, u32 da, size_t bytes, u32 flags)
 		return -ENOMEM;
 	pa = virt_to_phys(va);
 
-	flags &= IOVMF_HW_MASK;
 	flags |= IOVMF_LINEAR;
 	flags |= IOVMF_ALLOC;
 

arch/arm/plat-omap/sram.c

@@ -166,7 +166,7 @@ static void __init omap_detect_sram(void)
 		else if (cpu_is_omap1611())
 			omap_sram_size = SZ_256K;
 		else {
-			printk(KERN_ERR "Could not detect SRAM size\n");
+			pr_err("Could not detect SRAM size\n");
 			omap_sram_size = 0x4000;
 		}
 	}
@@ -221,10 +221,10 @@ static void __init omap_map_sram(void)
 	omap_sram_io_desc[0].length = ROUND_DOWN(omap_sram_size, PAGE_SIZE);
 	iotable_init(omap_sram_io_desc, ARRAY_SIZE(omap_sram_io_desc));
 
-	printk(KERN_INFO "SRAM: Mapped pa 0x%08lx to va 0x%08lx size: 0x%lx\n",
+	pr_info("SRAM: Mapped pa 0x%08llx to va 0x%08lx size: 0x%lx\n",
-	__pfn_to_phys(omap_sram_io_desc[0].pfn),
+		(long long) __pfn_to_phys(omap_sram_io_desc[0].pfn),
-	omap_sram_io_desc[0].virtual,
+		omap_sram_io_desc[0].virtual,
-	       omap_sram_io_desc[0].length);
+		omap_sram_io_desc[0].length);
 
 	/*
 	 * Normally devicemaps_init() would flush caches and tlb after
@@ -252,7 +252,7 @@ static void __init omap_map_sram(void)
 void *omap_sram_push_address(unsigned long size)
 {
 	if (size > (omap_sram_ceil - (omap_sram_base + SRAM_BOOTLOADER_SZ))) {
-		printk(KERN_ERR "Not enough space in SRAM\n");
+		pr_err("Not enough space in SRAM\n");
 		return NULL;
 	}
 

arch/arm/plat-s3c24xx/dma.c

@@ -1199,7 +1199,7 @@ EXPORT_SYMBOL(s3c2410_dma_getposition);
 
 #ifdef CONFIG_PM
 
-static void s3c2410_dma_suspend_chan(s3c2410_dma_chan *cp)
+static void s3c2410_dma_suspend_chan(struct s3c2410_dma_chan *cp)
 {
 	printk(KERN_DEBUG "suspending dma channel %d\n", cp->number);
 

arch/arm/plat-s3c24xx/irq.c

@@ -23,6 +23,7 @@
 #include <linux/interrupt.h>
 #include <linux/ioport.h>
 #include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 
 #include <asm/irq.h>
 #include <asm/mach/irq.h>
@@ -668,3 +669,8 @@ void __init s3c24xx_init_irq(void)
 
 	irqdbf("s3c2410: registered interrupt handlers\n");
 }
+
+struct syscore_ops s3c24xx_irq_syscore_ops = {
+	.suspend	= s3c24xx_irq_suspend,
+	.resume		= s3c24xx_irq_resume,
+};

arch/arm/plat-s5p/dev-onenand.c

@@ -15,8 +15,6 @@
 
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/onenand.h>
 
 #include <mach/irqs.h>
 #include <mach/map.h>
@@ -45,13 +43,3 @@ struct platform_device s5p_device_onenand = {
 	.num_resources	= ARRAY_SIZE(s5p_onenand_resources),
 	.resource	= s5p_onenand_resources,
 };
-
-void s5p_onenand_set_platdata(struct onenand_platform_data *pdata)
-{
-	struct onenand_platform_data *pd;
-
-	pd = kmemdup(pdata, sizeof(struct onenand_platform_data), GFP_KERNEL);
-	if (!pd)
-		printk(KERN_ERR "%s: no memory for platform data\n", __func__);
-	s5p_device_onenand.dev.platform_data = pd;
-}

arch/arm/plat-s5p/include/plat/map-s5p.h

@@ -39,7 +39,7 @@
 #define S5P_VA_TWD		S5P_VA_COREPERI(0x600)
 #define S5P_VA_GIC_DIST		S5P_VA_COREPERI(0x1000)
 
-#define S5P_VA_USB_HSPHY	S3C_ADDR(0x02900000)
+#define S3C_VA_USB_HSPHY	S3C_ADDR(0x02900000)
 
 #define VA_VIC(x)		(S3C_VA_IRQ + ((x) * 0x10000))
 #define VA_VIC0			VA_VIC(0)

arch/arm/plat-samsung/dev-onenand.c

@@ -13,8 +13,6 @@
 
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/onenand.h>
 
 #include <mach/irqs.h>
 #include <mach/map.h>
@@ -43,13 +41,3 @@ struct platform_device s3c_device_onenand = {
 	.num_resources	= ARRAY_SIZE(s3c_onenand_resources),
 	.resource	= s3c_onenand_resources,
 };
-
-void s3c_onenand_set_platdata(struct onenand_platform_data *pdata)
-{
-	struct onenand_platform_data *pd;
-
-	pd = kmemdup(pdata, sizeof(struct onenand_platform_data), GFP_KERNEL);
-	if (!pd)
-		printk(KERN_ERR "%s: no memory for platform data\n", __func__);
-	s3c_device_onenand.dev.platform_data = pd;
-}

arch/arm/plat-samsung/include/plat/devs.h

@@ -75,10 +75,8 @@ extern struct platform_device s5pc100_device_spi1;
 extern struct platform_device s5pc100_device_spi2;
 extern struct platform_device s5pv210_device_spi0;
 extern struct platform_device s5pv210_device_spi1;
-extern struct platform_device s5p6440_device_spi0;
+extern struct platform_device s5p64x0_device_spi0;
-extern struct platform_device s5p6440_device_spi1;
+extern struct platform_device s5p64x0_device_spi1;
-extern struct platform_device s5p6450_device_spi0;
-extern struct platform_device s5p6450_device_spi1;
 
 extern struct platform_device s3c_device_hwmon;
 

arch/mn10300/kernel/traps.c

@@ -28,7 +28,7 @@
 #include <linux/irq.h>
 #include <asm/processor.h>
 #include <asm/system.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 #include <asm/io.h>
 #include <asm/atomic.h>
 #include <asm/smp.h>
@@ -156,7 +156,7 @@ int die_if_no_fixup(const char *str, struct pt_regs *regs,
 
 	case EXCEP_TRAP:
 	case EXCEP_UNIMPINS:
-		if (get_user(opcode, (uint8_t __user *)regs->pc) != 0)
+		if (probe_kernel_read(&opcode, (u8 *)regs->pc, 1) < 0)
 			break;
 		if (opcode == 0xff) {
 			if (notify_die(DIE_BREAKPOINT, str, regs, code, 0, 0))

arch/mn10300/kernel/vmlinux.lds.S

@@ -44,6 +44,7 @@ SECTIONS
   RO_DATA(PAGE_SIZE)
 
   /* writeable */
+  _sdata = .;     /* Start of rw data section */
   RW_DATA_SECTION(32, PAGE_SIZE, THREAD_SIZE)
   _edata = .;
 

arch/mn10300/mm/cache-dbg-flush-by-reg.S

@@ -120,14 +120,14 @@ debugger_local_cache_flushinv_one:
 	# conditionally purge this line in all ways
 	mov	d1,(L1_CACHE_WAYDISP*0,a0)
 
-debugger_local_cache_flushinv_no_dcache:
+debugger_local_cache_flushinv_one_no_dcache:
 	#
 	# now try to flush the icache
 	#
 	mov	CHCTR,a0
 	movhu	(a0),d0
 	btst	CHCTR_ICEN,d0
-	beq	mn10300_local_icache_inv_range_reg_end
+	beq	debugger_local_cache_flushinv_one_end
 
 	LOCAL_CLI_SAVE(d1)
 

arch/powerpc/boot/.gitignore

@@ -1,5 +1,4 @@
 addnote
-dtc
 empty.c
 hack-coff
 infblock.c

arch/powerpc/boot/dtc-src/.gitignore

@@ -1,3 +0,0 @@
-dtc-lexer.lex.c
-dtc-parser.tab.c
-dtc-parser.tab.h

arch/powerpc/include/asm/rio.h

@@ -14,7 +14,7 @@
 #define ASM_PPC_RIO_H
 
 extern void platform_rio_init(void);
-#ifdef CONFIG_RAPIDIO
+#ifdef CONFIG_FSL_RIO
 extern int fsl_rio_mcheck_exception(struct pt_regs *);
 #else
 static inline int fsl_rio_mcheck_exception(struct pt_regs *regs) {return 0; }

arch/powerpc/kernel/cputable.c

@@ -1979,7 +1979,7 @@ static struct cpu_spec __initdata cpu_specs[] = {
 		.pvr_value		= 0x80240000,
 		.cpu_name		= "e5500",
 		.cpu_features		= CPU_FTRS_E5500,
-		.cpu_user_features	= COMMON_USER_BOOKE,
+		.cpu_user_features	= COMMON_USER_BOOKE | PPC_FEATURE_HAS_FPU,
 		.mmu_features		= MMU_FTR_TYPE_FSL_E | MMU_FTR_BIG_PHYS |
 			MMU_FTR_USE_TLBILX,
 		.icache_bsize		= 64,

arch/powerpc/kernel/prom.c

@@ -82,11 +82,29 @@ static int __init early_parse_mem(char *p)
 }
 early_param("mem", early_parse_mem);
 
+/*
+ * overlaps_initrd - check for overlap with page aligned extension of
+ * initrd.
+ */
+static inline int overlaps_initrd(unsigned long start, unsigned long size)
+{
+#ifdef CONFIG_BLK_DEV_INITRD
+	if (!initrd_start)
+		return 0;
+
+	return	(start + size) > _ALIGN_DOWN(initrd_start, PAGE_SIZE) &&
+			start <= _ALIGN_UP(initrd_end, PAGE_SIZE);
+#else
+	return 0;
+#endif
+}
+
 /**
  * move_device_tree - move tree to an unused area, if needed.
  *
  * The device tree may be allocated beyond our memory limit, or inside the
- * crash kernel region for kdump. If so, move it out of the way.
+ * crash kernel region for kdump, or within the page aligned range of initrd.
+ * If so, move it out of the way.
  */
 static void __init move_device_tree(void)
 {
@@ -99,7 +117,8 @@ static void __init move_device_tree(void)
 	size = be32_to_cpu(initial_boot_params->totalsize);
 
 	if ((memory_limit && (start + size) > PHYSICAL_START + memory_limit) ||
-			overlaps_crashkernel(start, size)) {
+			overlaps_crashkernel(start, size) ||
+			overlaps_initrd(start, size)) {
 		p = __va(memblock_alloc(size, PAGE_SIZE));
 		memcpy(p, initial_boot_params, size);
 		initial_boot_params = (struct boot_param_header *)p;
@@ -555,7 +574,9 @@ static void __init early_reserve_mem(void)
 #ifdef CONFIG_BLK_DEV_INITRD
 	/* then reserve the initrd, if any */
 	if (initrd_start && (initrd_end > initrd_start))
-		memblock_reserve(__pa(initrd_start), initrd_end - initrd_start);
+		memblock_reserve(_ALIGN_DOWN(__pa(initrd_start), PAGE_SIZE),
+			_ALIGN_UP(initrd_end, PAGE_SIZE) -
+			_ALIGN_DOWN(initrd_start, PAGE_SIZE));
 #endif /* CONFIG_BLK_DEV_INITRD */
 
 #ifdef CONFIG_PPC32

arch/powerpc/mm/init_32.c

@@ -223,21 +223,6 @@ void free_initmem(void)
 #undef FREESEC
 }
 
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
-	if (start < end)
-		printk ("Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
-	for (; start < end; start += PAGE_SIZE) {
-		ClearPageReserved(virt_to_page(start));
-		init_page_count(virt_to_page(start));
-		free_page(start);
-		totalram_pages++;
-	}
-}
-#endif
-
-
 #ifdef CONFIG_8xx /* No 8xx specific .c file to put that in ... */
 void setup_initial_memory_limit(phys_addr_t first_memblock_base,
 				phys_addr_t first_memblock_size)

arch/powerpc/mm/init_64.c

@@ -99,20 +99,6 @@ void free_initmem(void)
 		((unsigned long)__init_end - (unsigned long)__init_begin) >> 10);
 }
 
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
-	if (start < end)
-		printk ("Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
-	for (; start < end; start += PAGE_SIZE) {
-		ClearPageReserved(virt_to_page(start));
-		init_page_count(virt_to_page(start));
-		free_page(start);
-		totalram_pages++;
-	}
-}
-#endif
-
 static void pgd_ctor(void *addr)
 {
 	memset(addr, 0, PGD_TABLE_SIZE);

arch/powerpc/mm/mem.c

@@ -382,6 +382,25 @@ void __init mem_init(void)
 	mem_init_done = 1;
 }
 
+#ifdef CONFIG_BLK_DEV_INITRD
+void __init free_initrd_mem(unsigned long start, unsigned long end)
+{
+	if (start >= end)
+		return;
+
+	start = _ALIGN_DOWN(start, PAGE_SIZE);
+	end = _ALIGN_UP(end, PAGE_SIZE);
+	pr_info("Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
+
+	for (; start < end; start += PAGE_SIZE) {
+		ClearPageReserved(virt_to_page(start));
+		init_page_count(virt_to_page(start));
+		free_page(start);
+		totalram_pages++;
+	}
+}
+#endif
+
 /*
  * This is called when a page has been modified by the kernel.
  * It just marks the page as not i-cache clean.  We do the i-cache

arch/powerpc/sysdev/fsl_lbc.c

@@ -196,9 +196,6 @@ static int __devinit fsl_lbc_ctrl_init(struct fsl_lbc_ctrl *ctrl,
 	out_be32(&lbc->lteccr, LTECCR_CLEAR);
 	out_be32(&lbc->ltedr, LTEDR_ENABLE);
 
-	/* Enable interrupts for any detected events */
-	out_be32(&lbc->lteir, LTEIR_ENABLE);
-
 	/* Set the monitor timeout value to the maximum for erratum A001 */
 	if (of_device_is_compatible(node, "fsl,elbc"))
 		clrsetbits_be32(&lbc->lbcr, LBCR_BMT, LBCR_BMTPS);
@@ -322,6 +319,9 @@ static int __devinit fsl_lbc_ctrl_probe(struct platform_device *dev)
 		goto err;
 	}
 
+	/* Enable interrupts for any detected events */
+	out_be32(&fsl_lbc_ctrl_dev->regs->lteir, LTEIR_ENABLE);
+
 	return 0;
 
 err:

arch/s390/Kconfig

@@ -89,6 +89,7 @@ config S390
 	select HAVE_GET_USER_PAGES_FAST
 	select HAVE_ARCH_MUTEX_CPU_RELAX
 	select HAVE_ARCH_JUMP_LABEL if !MARCH_G5
+	select HAVE_RCU_TABLE_FREE if SMP
 	select ARCH_INLINE_SPIN_TRYLOCK
 	select ARCH_INLINE_SPIN_TRYLOCK_BH
 	select ARCH_INLINE_SPIN_LOCK

arch/s390/include/asm/pgalloc.h

@@ -17,15 +17,15 @@
 #include <linux/gfp.h>
 #include <linux/mm.h>
 
-#define check_pgt_cache()	do {} while (0)
-
 unsigned long *crst_table_alloc(struct mm_struct *);
 void crst_table_free(struct mm_struct *, unsigned long *);
-void crst_table_free_rcu(struct mm_struct *, unsigned long *);
 
 unsigned long *page_table_alloc(struct mm_struct *);
 void page_table_free(struct mm_struct *, unsigned long *);
-void page_table_free_rcu(struct mm_struct *, unsigned long *);
+#ifdef CONFIG_HAVE_RCU_TABLE_FREE
+void page_table_free_rcu(struct mmu_gather *, unsigned long *);
+void __tlb_remove_table(void *_table);
+#endif
 
 static inline void clear_table(unsigned long *s, unsigned long val, size_t n)
 {

arch/s390/include/asm/pgtable.h

@@ -293,19 +293,6 @@ extern unsigned long VMALLOC_START;
  * swap pte is 1011 and 0001, 0011, 0101, 0111 are invalid.
  */
 
-/* Page status table bits for virtualization */
-#define RCP_ACC_BITS	0xf000000000000000UL
-#define RCP_FP_BIT	0x0800000000000000UL
-#define RCP_PCL_BIT	0x0080000000000000UL
-#define RCP_HR_BIT	0x0040000000000000UL
-#define RCP_HC_BIT	0x0020000000000000UL
-#define RCP_GR_BIT	0x0004000000000000UL
-#define RCP_GC_BIT	0x0002000000000000UL
-
-/* User dirty / referenced bit for KVM's migration feature */
-#define KVM_UR_BIT	0x0000800000000000UL
-#define KVM_UC_BIT	0x0000400000000000UL
-
 #ifndef __s390x__
 
 /* Bits in the segment table address-space-control-element */
@@ -325,6 +312,19 @@ extern unsigned long VMALLOC_START;
 #define _SEGMENT_ENTRY		(_SEGMENT_ENTRY_PTL)
 #define _SEGMENT_ENTRY_EMPTY	(_SEGMENT_ENTRY_INV)
 
+/* Page status table bits for virtualization */
+#define RCP_ACC_BITS	0xf0000000UL
+#define RCP_FP_BIT	0x08000000UL
+#define RCP_PCL_BIT	0x00800000UL
+#define RCP_HR_BIT	0x00400000UL
+#define RCP_HC_BIT	0x00200000UL
+#define RCP_GR_BIT	0x00040000UL
+#define RCP_GC_BIT	0x00020000UL
+
+/* User dirty / referenced bit for KVM's migration feature */
+#define KVM_UR_BIT	0x00008000UL
+#define KVM_UC_BIT	0x00004000UL
+
 #else /* __s390x__ */
 
 /* Bits in the segment/region table address-space-control-element */
@@ -367,6 +367,19 @@ extern unsigned long VMALLOC_START;
 #define _SEGMENT_ENTRY_LARGE	0x400	/* STE-format control, large page   */
 #define _SEGMENT_ENTRY_CO	0x100	/* change-recording override   */
 
+/* Page status table bits for virtualization */
+#define RCP_ACC_BITS	0xf000000000000000UL
+#define RCP_FP_BIT	0x0800000000000000UL
+#define RCP_PCL_BIT	0x0080000000000000UL
+#define RCP_HR_BIT	0x0040000000000000UL
+#define RCP_HC_BIT	0x0020000000000000UL
+#define RCP_GR_BIT	0x0004000000000000UL
+#define RCP_GC_BIT	0x0002000000000000UL
+
+/* User dirty / referenced bit for KVM's migration feature */
+#define KVM_UR_BIT	0x0000800000000000UL
+#define KVM_UC_BIT	0x0000400000000000UL
+
 #endif /* __s390x__ */
 
 /*

arch/s390/include/asm/qdio.h

@@ -139,110 +139,47 @@ struct slib {
 	struct slibe slibe[QDIO_MAX_BUFFERS_PER_Q];
 } __attribute__ ((packed, aligned(2048)));
 
-/**
+#define SBAL_EFLAGS_LAST_ENTRY		0x40
- * struct sbal_flags - storage block address list flags
+#define SBAL_EFLAGS_CONTIGUOUS		0x20
- * @last: last entry
+#define SBAL_EFLAGS_FIRST_FRAG		0x04
- * @cont: contiguous storage
+#define SBAL_EFLAGS_MIDDLE_FRAG		0x08
- * @frag: fragmentation
+#define SBAL_EFLAGS_LAST_FRAG		0x0c
- */
+#define SBAL_EFLAGS_MASK		0x6f
-struct sbal_flags {
-	u8	: 1;
-	u8 last : 1;
-	u8 cont : 1;
-	u8	: 1;
-	u8 frag : 2;
-	u8	: 2;
-} __attribute__ ((packed));
 
-#define SBAL_FLAGS_FIRST_FRAG		0x04000000UL
+#define SBAL_SFLAGS0_PCI_REQ		0x40
-#define SBAL_FLAGS_MIDDLE_FRAG		0x08000000UL
+#define SBAL_SFLAGS0_DATA_CONTINUATION	0x20
-#define SBAL_FLAGS_LAST_FRAG		0x0c000000UL
-#define SBAL_FLAGS_LAST_ENTRY		0x40000000UL
-#define SBAL_FLAGS_CONTIGUOUS		0x20000000UL
-
-#define SBAL_FLAGS0_DATA_CONTINUATION	0x20UL
 
 /* Awesome OpenFCP extensions */
-#define SBAL_FLAGS0_TYPE_STATUS		0x00UL
+#define SBAL_SFLAGS0_TYPE_STATUS	0x00
-#define SBAL_FLAGS0_TYPE_WRITE		0x08UL
+#define SBAL_SFLAGS0_TYPE_WRITE		0x08
-#define SBAL_FLAGS0_TYPE_READ		0x10UL
+#define SBAL_SFLAGS0_TYPE_READ		0x10
-#define SBAL_FLAGS0_TYPE_WRITE_READ	0x18UL
+#define SBAL_SFLAGS0_TYPE_WRITE_READ	0x18
-#define SBAL_FLAGS0_MORE_SBALS		0x04UL
+#define SBAL_SFLAGS0_MORE_SBALS		0x04
-#define SBAL_FLAGS0_COMMAND		0x02UL
+#define SBAL_SFLAGS0_COMMAND		0x02
-#define SBAL_FLAGS0_LAST_SBAL		0x00UL
+#define SBAL_SFLAGS0_LAST_SBAL		0x00
-#define SBAL_FLAGS0_ONLY_SBAL		SBAL_FLAGS0_COMMAND
+#define SBAL_SFLAGS0_ONLY_SBAL		SBAL_SFLAGS0_COMMAND
-#define SBAL_FLAGS0_MIDDLE_SBAL		SBAL_FLAGS0_MORE_SBALS
+#define SBAL_SFLAGS0_MIDDLE_SBAL	SBAL_SFLAGS0_MORE_SBALS
-#define SBAL_FLAGS0_FIRST_SBAL SBAL_FLAGS0_MORE_SBALS | SBAL_FLAGS0_COMMAND
+#define SBAL_SFLAGS0_FIRST_SBAL (SBAL_SFLAGS0_MORE_SBALS | SBAL_SFLAGS0_COMMAND)
-#define SBAL_FLAGS0_PCI			0x40
-
-/**
- * struct sbal_sbalf_0 - sbal flags for sbale 0
- * @pci: PCI indicator
- * @cont: data continuation
- * @sbtype: storage-block type (FCP)
- */
-struct sbal_sbalf_0 {
-	u8	  : 1;
-	u8 pci	  : 1;
-	u8 cont   : 1;
-	u8 sbtype : 2;
-	u8	  : 3;
-} __attribute__ ((packed));
-
-/**
- * struct sbal_sbalf_1 - sbal flags for sbale 1
- * @key: storage key
- */
-struct sbal_sbalf_1 {
-	u8     : 4;
-	u8 key : 4;
-} __attribute__ ((packed));
-
-/**
- * struct sbal_sbalf_14 - sbal flags for sbale 14
- * @erridx: error index
- */
-struct sbal_sbalf_14 {
-	u8	  : 4;
-	u8 erridx : 4;
-} __attribute__ ((packed));
-
-/**
- * struct sbal_sbalf_15 - sbal flags for sbale 15
- * @reason: reason for error state
- */
-struct sbal_sbalf_15 {
-	u8 reason;
-} __attribute__ ((packed));
-
-/**
- * union sbal_sbalf - storage block address list flags
- * @i0: sbalf0
- * @i1: sbalf1
- * @i14: sbalf14
- * @i15: sblaf15
- * @value: raw value
- */
-union sbal_sbalf {
-	struct sbal_sbalf_0  i0;
-	struct sbal_sbalf_1  i1;
-	struct sbal_sbalf_14 i14;
-	struct sbal_sbalf_15 i15;
-	u8 value;
-};
 
 /**
  * struct qdio_buffer_element - SBAL entry
- * @flags: flags
+ * @eflags: SBAL entry flags
+ * @scount: SBAL count
+ * @sflags: whole SBAL flags
  * @length: length
  * @addr: address
 */
 struct qdio_buffer_element {
-	u32 flags;
+	u8 eflags;
+	/* private: */
+	u8 res1;
+	/* public: */
+	u8 scount;
+	u8 sflags;
 	u32 length;
 #ifdef CONFIG_32BIT
 	/* private: */
-	void *reserved;
+	void *res2;
 	/* public: */
 #endif
 	void *addr;

arch/s390/include/asm/tlb.h

@@ -26,67 +26,60 @@
 #include <linux/swap.h>
 #include <asm/processor.h>
 #include <asm/pgalloc.h>
-#include <asm/smp.h>
 #include <asm/tlbflush.h>
 
 struct mmu_gather {
 	struct mm_struct *mm;
+#ifdef CONFIG_HAVE_RCU_TABLE_FREE
+	struct mmu_table_batch *batch;
+#endif
 	unsigned int fullmm;
-	unsigned int nr_ptes;
+	unsigned int need_flush;
-	unsigned int nr_pxds;
-	unsigned int max;
-	void **array;
-	void *local[8];
 };
 
-static inline void __tlb_alloc_page(struct mmu_gather *tlb)
+#ifdef CONFIG_HAVE_RCU_TABLE_FREE
-{
+struct mmu_table_batch {
-	unsigned long addr = __get_free_pages(GFP_NOWAIT | __GFP_NOWARN, 0);
+	struct rcu_head		rcu;
+	unsigned int		nr;
+	void			*tables[0];
+};
 
-	if (addr) {
+#define MAX_TABLE_BATCH		\
-		tlb->array = (void *) addr;
+	((PAGE_SIZE - sizeof(struct mmu_table_batch)) / sizeof(void *))
-		tlb->max = PAGE_SIZE / sizeof(void *);
+
-	}
+extern void tlb_table_flush(struct mmu_gather *tlb);
-}
+extern void tlb_remove_table(struct mmu_gather *tlb, void *table);
+#endif
 
 static inline void tlb_gather_mmu(struct mmu_gather *tlb,
 				  struct mm_struct *mm,
 				  unsigned int full_mm_flush)
 {
 	tlb->mm = mm;
-	tlb->max = ARRAY_SIZE(tlb->local);
-	tlb->array = tlb->local;
 	tlb->fullmm = full_mm_flush;
+	tlb->need_flush = 0;
+#ifdef CONFIG_HAVE_RCU_TABLE_FREE
+	tlb->batch = NULL;
+#endif
 	if (tlb->fullmm)
 		__tlb_flush_mm(mm);
-	else
-		__tlb_alloc_page(tlb);
-	tlb->nr_ptes = 0;
-	tlb->nr_pxds = tlb->max;
 }
 
 static inline void tlb_flush_mmu(struct mmu_gather *tlb)
 {
-	if (!tlb->fullmm && (tlb->nr_ptes > 0 || tlb->nr_pxds < tlb->max))
+	if (!tlb->need_flush)
-		__tlb_flush_mm(tlb->mm);
+		return;
-	while (tlb->nr_ptes > 0)
+	tlb->need_flush = 0;
-		page_table_free_rcu(tlb->mm, tlb->array[--tlb->nr_ptes]);
+	__tlb_flush_mm(tlb->mm);
-	while (tlb->nr_pxds < tlb->max)
+#ifdef CONFIG_HAVE_RCU_TABLE_FREE
-		crst_table_free_rcu(tlb->mm, tlb->array[tlb->nr_pxds++]);
+	tlb_table_flush(tlb);
+#endif
 }
 
 static inline void tlb_finish_mmu(struct mmu_gather *tlb,
 				  unsigned long start, unsigned long end)
 {
 	tlb_flush_mmu(tlb);
-
-	rcu_table_freelist_finish();
-
-	/* keep the page table cache within bounds */
-	check_pgt_cache();
-
-	if (tlb->array != tlb->local)
-		free_pages((unsigned long) tlb->array, 0);
 }
 
 /*
@@ -112,12 +105,11 @@ static inline void tlb_remove_page(struct mmu_gather *tlb, struct page *page)
 static inline void pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte,
 				unsigned long address)
 {
-	if (!tlb->fullmm) {
+#ifdef CONFIG_HAVE_RCU_TABLE_FREE
-		tlb->array[tlb->nr_ptes++] = pte;
+	if (!tlb->fullmm)
-		if (tlb->nr_ptes >= tlb->nr_pxds)
+		return page_table_free_rcu(tlb, (unsigned long *) pte);
-			tlb_flush_mmu(tlb);
+#endif
-	} else
+	page_table_free(tlb->mm, (unsigned long *) pte);
-		page_table_free(tlb->mm, (unsigned long *) pte);
 }
 
 /*
@@ -133,12 +125,11 @@ static inline void pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
 #ifdef __s390x__
 	if (tlb->mm->context.asce_limit <= (1UL << 31))
 		return;
-	if (!tlb->fullmm) {
+#ifdef CONFIG_HAVE_RCU_TABLE_FREE
-		tlb->array[--tlb->nr_pxds] = pmd;
+	if (!tlb->fullmm)
-		if (tlb->nr_ptes >= tlb->nr_pxds)
+		return tlb_remove_table(tlb, pmd);
-			tlb_flush_mmu(tlb);
+#endif
-	} else
+	crst_table_free(tlb->mm, (unsigned long *) pmd);
-		crst_table_free(tlb->mm, (unsigned long *) pmd);
 #endif
 }
 
@@ -155,12 +146,11 @@ static inline void pud_free_tlb(struct mmu_gather *tlb, pud_t *pud,
 #ifdef __s390x__
 	if (tlb->mm->context.asce_limit <= (1UL << 42))
 		return;
-	if (!tlb->fullmm) {
+#ifdef CONFIG_HAVE_RCU_TABLE_FREE
-		tlb->array[--tlb->nr_pxds] = pud;
+	if (!tlb->fullmm)
-		if (tlb->nr_ptes >= tlb->nr_pxds)
+		return tlb_remove_table(tlb, pud);
-			tlb_flush_mmu(tlb);
+#endif
-	} else
+	crst_table_free(tlb->mm, (unsigned long *) pud);
-		crst_table_free(tlb->mm, (unsigned long *) pud);
 #endif
 }
 

arch/s390/kvm/kvm-s390.c

@@ -731,6 +731,7 @@ static int __init kvm_s390_init(void)
 	}
 	memcpy(facilities, S390_lowcore.stfle_fac_list, 16);
 	facilities[0] &= 0xff00fff3f47c0000ULL;
+	facilities[1] &= 0x201c000000000000ULL;
 	return 0;
 }
 

arch/s390/kvm/sie64a.S

@@ -93,4 +93,6 @@ sie_err:
 
 	.section __ex_table,"a"
 	.quad	sie_inst,sie_err
+	.quad	sie_exit,sie_err
+	.quad	sie_reenter,sie_err
 	.previous

arch/s390/mm/pgtable.c

@@ -24,94 +24,12 @@
 #include <asm/tlbflush.h>
 #include <asm/mmu_context.h>
 
-struct rcu_table_freelist {
-	struct rcu_head rcu;
-	struct mm_struct *mm;
-	unsigned int pgt_index;
-	unsigned int crst_index;
-	unsigned long *table[0];
-};
-
-#define RCU_FREELIST_SIZE \
-	((PAGE_SIZE - sizeof(struct rcu_table_freelist)) \
-	  / sizeof(unsigned long))
-
-static DEFINE_PER_CPU(struct rcu_table_freelist *, rcu_table_freelist);
-
-static void __page_table_free(struct mm_struct *mm, unsigned long *table);
-
-static struct rcu_table_freelist *rcu_table_freelist_get(struct mm_struct *mm)
-{
-	struct rcu_table_freelist **batchp = &__get_cpu_var(rcu_table_freelist);
-	struct rcu_table_freelist *batch = *batchp;
-
-	if (batch)
-		return batch;
-	batch = (struct rcu_table_freelist *) __get_free_page(GFP_ATOMIC);
-	if (batch) {
-		batch->mm = mm;
-		batch->pgt_index = 0;
-		batch->crst_index = RCU_FREELIST_SIZE;
-		*batchp = batch;
-	}
-	return batch;
-}
-
-static void rcu_table_freelist_callback(struct rcu_head *head)
-{
-	struct rcu_table_freelist *batch =
-		container_of(head, struct rcu_table_freelist, rcu);
-
-	while (batch->pgt_index > 0)
-		__page_table_free(batch->mm, batch->table[--batch->pgt_index]);
-	while (batch->crst_index < RCU_FREELIST_SIZE)
-		crst_table_free(batch->mm, batch->table[batch->crst_index++]);
-	free_page((unsigned long) batch);
-}
-
-void rcu_table_freelist_finish(void)
-{
-	struct rcu_table_freelist **batchp = &get_cpu_var(rcu_table_freelist);
-	struct rcu_table_freelist *batch = *batchp;
-
-	if (!batch)
-		goto out;
-	call_rcu(&batch->rcu, rcu_table_freelist_callback);
-	*batchp = NULL;
-out:
-	put_cpu_var(rcu_table_freelist);
-}
-
-static void smp_sync(void *arg)
-{
-}
-
 #ifndef CONFIG_64BIT
 #define ALLOC_ORDER	1
-#define TABLES_PER_PAGE	4
+#define FRAG_MASK	0x0f
-#define FRAG_MASK	15UL
-#define SECOND_HALVES	10UL
-
-void clear_table_pgstes(unsigned long *table)
-{
-	clear_table(table, _PAGE_TYPE_EMPTY, PAGE_SIZE/4);
-	memset(table + 256, 0, PAGE_SIZE/4);
-	clear_table(table + 512, _PAGE_TYPE_EMPTY, PAGE_SIZE/4);
-	memset(table + 768, 0, PAGE_SIZE/4);
-}
-
 #else
 #define ALLOC_ORDER	2
-#define TABLES_PER_PAGE	2
+#define FRAG_MASK	0x03
-#define FRAG_MASK	3UL
-#define SECOND_HALVES	2UL
-
-void clear_table_pgstes(unsigned long *table)
-{
-	clear_table(table, _PAGE_TYPE_EMPTY, PAGE_SIZE/2);
-	memset(table + 256, 0, PAGE_SIZE/2);
-}
-
 #endif
 
 unsigned long VMALLOC_START = VMALLOC_END - VMALLOC_SIZE;
@@ -140,29 +58,6 @@ void crst_table_free(struct mm_struct *mm, unsigned long *table)
 	free_pages((unsigned long) table, ALLOC_ORDER);
 }
 
-void crst_table_free_rcu(struct mm_struct *mm, unsigned long *table)
-{
-	struct rcu_table_freelist *batch;
-
-	preempt_disable();
-	if (atomic_read(&mm->mm_users) < 2 &&
-	    cpumask_equal(mm_cpumask(mm), cpumask_of(smp_processor_id()))) {
-		crst_table_free(mm, table);
-		goto out;
-	}
-	batch = rcu_table_freelist_get(mm);
-	if (!batch) {
-		smp_call_function(smp_sync, NULL, 1);
-		crst_table_free(mm, table);
-		goto out;
-	}
-	batch->table[--batch->crst_index] = table;
-	if (batch->pgt_index >= batch->crst_index)
-		rcu_table_freelist_finish();
-out:
-	preempt_enable();
-}
-
 #ifdef CONFIG_64BIT
 int crst_table_upgrade(struct mm_struct *mm, unsigned long limit)
 {
@@ -238,124 +133,175 @@ void crst_table_downgrade(struct mm_struct *mm, unsigned long limit)
 }
 #endif
 
+static inline unsigned int atomic_xor_bits(atomic_t *v, unsigned int bits)
+{
+	unsigned int old, new;
+
+	do {
+		old = atomic_read(v);
+		new = old ^ bits;
+	} while (atomic_cmpxchg(v, old, new) != old);
+	return new;
+}
+
 /*
  * page table entry allocation/free routines.
  */
+#ifdef CONFIG_PGSTE
+static inline unsigned long *page_table_alloc_pgste(struct mm_struct *mm)
+{
+	struct page *page;
+	unsigned long *table;
+
+	page = alloc_page(GFP_KERNEL|__GFP_REPEAT);
+	if (!page)
+		return NULL;
+	pgtable_page_ctor(page);
+	atomic_set(&page->_mapcount, 3);
+	table = (unsigned long *) page_to_phys(page);
+	clear_table(table, _PAGE_TYPE_EMPTY, PAGE_SIZE/2);
+	clear_table(table + PTRS_PER_PTE, 0, PAGE_SIZE/2);
+	return table;
+}
+
+static inline void page_table_free_pgste(unsigned long *table)
+{
+	struct page *page;
+
+	page = pfn_to_page(__pa(table) >> PAGE_SHIFT);
+	pgtable_page_ctor(page);
+	atomic_set(&page->_mapcount, -1);
+	__free_page(page);
+}
+#endif
+
 unsigned long *page_table_alloc(struct mm_struct *mm)
 {
 	struct page *page;
 	unsigned long *table;
-	unsigned long bits;
+	unsigned int mask, bit;
 
-	bits = (mm->context.has_pgste) ? 3UL : 1UL;
+#ifdef CONFIG_PGSTE
+	if (mm_has_pgste(mm))
+		return page_table_alloc_pgste(mm);
+#endif
+	/* Allocate fragments of a 4K page as 1K/2K page table */
 	spin_lock_bh(&mm->context.list_lock);
-	page = NULL;
+	mask = FRAG_MASK;
 	if (!list_empty(&mm->context.pgtable_list)) {
 		page = list_first_entry(&mm->context.pgtable_list,
 					struct page, lru);
-		if ((page->flags & FRAG_MASK) == ((1UL << TABLES_PER_PAGE) - 1))
+		table = (unsigned long *) page_to_phys(page);
-			page = NULL;
+		mask = atomic_read(&page->_mapcount);
+		mask = mask | (mask >> 4);
 	}
-	if (!page) {
+	if ((mask & FRAG_MASK) == FRAG_MASK) {
 		spin_unlock_bh(&mm->context.list_lock);
 		page = alloc_page(GFP_KERNEL|__GFP_REPEAT);
 		if (!page)
 			return NULL;
 		pgtable_page_ctor(page);
-		page->flags &= ~FRAG_MASK;
+		atomic_set(&page->_mapcount, 1);
 		table = (unsigned long *) page_to_phys(page);
-		if (mm->context.has_pgste)
+		clear_table(table, _PAGE_TYPE_EMPTY, PAGE_SIZE);
-			clear_table_pgstes(table);
-		else
-			clear_table(table, _PAGE_TYPE_EMPTY, PAGE_SIZE);
 		spin_lock_bh(&mm->context.list_lock);
 		list_add(&page->lru, &mm->context.pgtable_list);
+	} else {
+		for (bit = 1; mask & bit; bit <<= 1)
+			table += PTRS_PER_PTE;
+		mask = atomic_xor_bits(&page->_mapcount, bit);
+		if ((mask & FRAG_MASK) == FRAG_MASK)
+			list_del(&page->lru);
 	}
-	table = (unsigned long *) page_to_phys(page);
-	while (page->flags & bits) {
-		table += 256;
-		bits <<= 1;
-	}
-	page->flags |= bits;
-	if ((page->flags & FRAG_MASK) == ((1UL << TABLES_PER_PAGE) - 1))
-		list_move_tail(&page->lru, &mm->context.pgtable_list);
 	spin_unlock_bh(&mm->context.list_lock);
 	return table;
 }
 
-static void __page_table_free(struct mm_struct *mm, unsigned long *table)
-{
-	struct page *page;
-	unsigned long bits;
-
-	bits = ((unsigned long) table) & 15;
-	table = (unsigned long *)(((unsigned long) table) ^ bits);
-	page = pfn_to_page(__pa(table) >> PAGE_SHIFT);
-	page->flags ^= bits;
-	if (!(page->flags & FRAG_MASK)) {
-		pgtable_page_dtor(page);
-		__free_page(page);
-	}
-}
-
 void page_table_free(struct mm_struct *mm, unsigned long *table)
 {
 	struct page *page;
-	unsigned long bits;
+	unsigned int bit, mask;
 
-	bits = (mm->context.has_pgste) ? 3UL : 1UL;
+#ifdef CONFIG_PGSTE
-	bits <<= (__pa(table) & (PAGE_SIZE - 1)) / 256 / sizeof(unsigned long);
+	if (mm_has_pgste(mm))
+		return page_table_free_pgste(table);
+#endif
+	/* Free 1K/2K page table fragment of a 4K page */
 	page = pfn_to_page(__pa(table) >> PAGE_SHIFT);
+	bit = 1 << ((__pa(table) & ~PAGE_MASK)/(PTRS_PER_PTE*sizeof(pte_t)));
 	spin_lock_bh(&mm->context.list_lock);
-	page->flags ^= bits;
+	if ((atomic_read(&page->_mapcount) & FRAG_MASK) != FRAG_MASK)
-	if (page->flags & FRAG_MASK) {
-		/* Page now has some free pgtable fragments. */
-		if (!list_empty(&page->lru))
-			list_move(&page->lru, &mm->context.pgtable_list);
-		page = NULL;
-	} else
-		/* All fragments of the 4K page have been freed. */
 		list_del(&page->lru);
+	mask = atomic_xor_bits(&page->_mapcount, bit);
+	if (mask & FRAG_MASK)
+		list_add(&page->lru, &mm->context.pgtable_list);
 	spin_unlock_bh(&mm->context.list_lock);
-	if (page) {
+	if (mask == 0) {
 		pgtable_page_dtor(page);
+		atomic_set(&page->_mapcount, -1);
 		__free_page(page);
 	}
 }
 
-void page_table_free_rcu(struct mm_struct *mm, unsigned long *table)
+#ifdef CONFIG_HAVE_RCU_TABLE_FREE
-{
-	struct rcu_table_freelist *batch;
-	struct page *page;
-	unsigned long bits;
 
-	preempt_disable();
+static void __page_table_free_rcu(void *table, unsigned bit)
-	if (atomic_read(&mm->mm_users) < 2 &&
+{
-	    cpumask_equal(mm_cpumask(mm), cpumask_of(smp_processor_id()))) {
+	struct page *page;
-		page_table_free(mm, table);
+
-		goto out;
+#ifdef CONFIG_PGSTE
+	if (bit == FRAG_MASK)
+		return page_table_free_pgste(table);
+#endif
+	/* Free 1K/2K page table fragment of a 4K page */
+	page = pfn_to_page(__pa(table) >> PAGE_SHIFT);
+	if (atomic_xor_bits(&page->_mapcount, bit) == 0) {
+		pgtable_page_dtor(page);
+		atomic_set(&page->_mapcount, -1);
+		__free_page(page);
 	}
-	batch = rcu_table_freelist_get(mm);
+}
-	if (!batch) {
+
-		smp_call_function(smp_sync, NULL, 1);
+void page_table_free_rcu(struct mmu_gather *tlb, unsigned long *table)
-		page_table_free(mm, table);
+{
-		goto out;
+	struct mm_struct *mm;
+	struct page *page;
+	unsigned int bit, mask;
+
+	mm = tlb->mm;
+#ifdef CONFIG_PGSTE
+	if (mm_has_pgste(mm)) {
+		table = (unsigned long *) (__pa(table) | FRAG_MASK);
+		tlb_remove_table(tlb, table);
+		return;
 	}
-	bits = (mm->context.has_pgste) ? 3UL : 1UL;
+#endif
-	bits <<= (__pa(table) & (PAGE_SIZE - 1)) / 256 / sizeof(unsigned long);
+	bit = 1 << ((__pa(table) & ~PAGE_MASK) / (PTRS_PER_PTE*sizeof(pte_t)));
 	page = pfn_to_page(__pa(table) >> PAGE_SHIFT);
 	spin_lock_bh(&mm->context.list_lock);
-	/* Delayed freeing with rcu prevents reuse of pgtable fragments */
+	if ((atomic_read(&page->_mapcount) & FRAG_MASK) != FRAG_MASK)
-	list_del_init(&page->lru);
+		list_del(&page->lru);
+	mask = atomic_xor_bits(&page->_mapcount, bit | (bit << 4));
+	if (mask & FRAG_MASK)
+		list_add_tail(&page->lru, &mm->context.pgtable_list);
 	spin_unlock_bh(&mm->context.list_lock);
-	table = (unsigned long *)(((unsigned long) table) | bits);
+	table = (unsigned long *) (__pa(table) | (bit << 4));
-	batch->table[batch->pgt_index++] = table;
+	tlb_remove_table(tlb, table);
-	if (batch->pgt_index >= batch->crst_index)
-		rcu_table_freelist_finish();
-out:
-	preempt_enable();
 }
 
+void __tlb_remove_table(void *_table)
+{
+	void *table = (void *)((unsigned long) _table & PAGE_MASK);
+	unsigned type = (unsigned long) _table & ~PAGE_MASK;
+
+	if (type)
+		__page_table_free_rcu(table, type);
+	else
+		free_pages((unsigned long) table, ALLOC_ORDER);
+}
+
+#endif
+
 /*
  * switch on pgstes for its userspace process (for kvm)
  */
@@ -369,7 +315,7 @@ int s390_enable_sie(void)
 		return -EINVAL;
 
 	/* Do we have pgstes? if yes, we are done */
-	if (tsk->mm->context.has_pgste)
+	if (mm_has_pgste(tsk->mm))
 		return 0;
 
 	/* lets check if we are allowed to replace the mm */

arch/sparc/Kconfig

@@ -26,7 +26,6 @@ config SPARC
 	select HAVE_DMA_API_DEBUG
 	select HAVE_ARCH_JUMP_LABEL
 	select HAVE_GENERIC_HARDIRQS
-	select GENERIC_HARDIRQS_NO_DEPRECATED
 	select GENERIC_IRQ_SHOW
 	select USE_GENERIC_SMP_HELPERS if SMP
 
@@ -528,6 +527,23 @@ config PCI_DOMAINS
 config PCI_SYSCALL
 	def_bool PCI
 
+config PCIC_PCI
+	bool
+	depends on PCI && SPARC32 && !SPARC_LEON
+	default y
+
+config LEON_PCI
+	bool
+	depends on PCI && SPARC_LEON
+	default y
+
+config GRPCI2
+	bool "GRPCI2 Host Bridge Support"
+	depends on LEON_PCI
+	default y
+	help
+	  Say Y here to include the GRPCI2 Host Bridge Driver.
+
 source "drivers/pci/Kconfig"
 
 source "drivers/pcmcia/Kconfig"

arch/sparc/include/asm/floppy_32.h

@@ -138,7 +138,7 @@ static unsigned char sun_82072_fd_inb(int port)
 		return sun_fdc->data_82072;
 	case 7: /* FD_DIR */
 		return sun_read_dir();
-	};
+	}
 	panic("sun_82072_fd_inb: How did I get here?");
 }
 
@@ -161,7 +161,7 @@ static void sun_82072_fd_outb(unsigned char value, int port)
 	case 4: /* FD_STATUS */
 		sun_fdc->status_82072 = value;
 		break;
-	};
+	}
 	return;
 }
 
@@ -186,7 +186,7 @@ static unsigned char sun_82077_fd_inb(int port)
 		return sun_fdc->data_82077;
 	case 7: /* FD_DIR */
 		return sun_read_dir();
-	};
+	}
 	panic("sun_82077_fd_inb: How did I get here?");
 }
 
@@ -212,7 +212,7 @@ static void sun_82077_fd_outb(unsigned char value, int port)
 	case 3: /* FD_TDR */
 		sun_fdc->tapectl_82077 = value;
 		break;
-	};
+	}
 	return;
 }
 

arch/sparc/include/asm/floppy_64.h

@@ -111,7 +111,7 @@ static unsigned char sun_82077_fd_inb(unsigned long port)
 	case 7: /* FD_DIR */
 		/* XXX: Is DCL on 0x80 in sun4m? */
 		return sbus_readb(&sun_fdc->dir_82077);
-	};
+	}
 	panic("sun_82072_fd_inb: How did I get here?");
 }
 
@@ -135,7 +135,7 @@ static void sun_82077_fd_outb(unsigned char value, unsigned long port)
 	case 4: /* FD_STATUS */
 		sbus_writeb(value, &sun_fdc->status_82077);
 		break;
-	};
+	}
 	return;
 }
 

arch/sparc/include/asm/leon.h

@@ -318,6 +318,9 @@ struct device_node;
 extern unsigned int leon_build_device_irq(unsigned int real_irq,
 					   irq_flow_handler_t flow_handler,
 					   const char *name, int do_ack);
+extern void leon_update_virq_handling(unsigned int virq,
+			      irq_flow_handler_t flow_handler,
+			      const char *name, int do_ack);
 extern void leon_clear_clock_irq(void);
 extern void leon_load_profile_irq(int cpu, unsigned int limit);
 extern void leon_init_timers(irq_handler_t counter_fn);

arch/sparc/include/asm/leon_pci.h

@@ -0,0 +1,21 @@
+/*
+ * asm/leon_pci.h
+ *
+ * Copyright (C) 2011 Aeroflex Gaisler AB, Daniel Hellstrom
+ */
+
+#ifndef _ASM_LEON_PCI_H_
+#define _ASM_LEON_PCI_H_
+
+/* PCI related definitions */
+struct leon_pci_info {
+	struct pci_ops *ops;
+	struct resource	io_space;
+	struct resource	mem_space;
+	int (*map_irq)(struct pci_dev *dev, u8 slot, u8 pin);
+};
+
+extern void leon_pci_init(struct platform_device *ofdev,
+				struct leon_pci_info *info);
+
+#endif /* _ASM_LEON_PCI_H_ */

arch/sparc/include/asm/pci_32.h

@@ -47,7 +47,31 @@ extern struct device_node *pci_device_to_OF_node(struct pci_dev *pdev);
 
 #endif /* __KERNEL__ */
 
+#ifndef CONFIG_LEON_PCI
 /* generic pci stuff */
 #include <asm-generic/pci.h>
+#else
+/*
+ * On LEON PCI Memory space is mapped 1:1 with physical address space.
+ *
+ * I/O space is located at low 64Kbytes in PCI I/O space. The I/O addresses
+ * are converted into CPU addresses to virtual addresses that are mapped with
+ * MMU to the PCI Host PCI I/O space window which are translated to the low
+ * 64Kbytes by the Host controller.
+ */
+
+extern void
+pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
+			struct resource *res);
+
+extern void
+pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
+			struct pci_bus_region *region);
+
+static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
+{
+	return PCI_IRQ_NONE;
+}
+#endif
 
 #endif /* __SPARC_PCI_H */

arch/sparc/include/asm/pcic.h

@@ -29,7 +29,7 @@ struct linux_pcic {
 	int			pcic_imdim;
 };
 
-#ifdef CONFIG_PCI
+#ifdef CONFIG_PCIC_PCI
 extern int pcic_present(void);
 extern int pcic_probe(void);
 extern void pci_time_init(void);

arch/sparc/include/asm/system_32.h

@@ -220,7 +220,7 @@ static inline unsigned long __xchg(unsigned long x, __volatile__ void * ptr, int
 	switch (size) {
 	case 4:
 		return xchg_u32(ptr, x);
-	};
+	}
 	__xchg_called_with_bad_pointer();
 	return x;
 }

arch/sparc/include/asm/system_64.h

@@ -234,7 +234,7 @@ static inline unsigned long __xchg(unsigned long x, __volatile__ void * ptr,
 		return xchg32(ptr, x);
 	case 8:
 		return xchg64(ptr, x);
-	};
+	}
 	__xchg_called_with_bad_pointer();
 	return x;
 }

arch/sparc/kernel/Makefile

@@ -73,7 +73,9 @@ obj-$(CONFIG_SPARC64_SMP) += cpumap.o
 
 obj-y                     += dma.o
 
-obj-$(CONFIG_SPARC32_PCI) += pcic.o
+obj-$(CONFIG_PCIC_PCI)    += pcic.o
+obj-$(CONFIG_LEON_PCI)    += leon_pci.o
+obj-$(CONFIG_GRPCI2)      += leon_pci_grpci2.o
 
 obj-$(CONFIG_SMP)         += trampoline_$(BITS).o smp_$(BITS).o
 obj-$(CONFIG_SPARC32_SMP) += sun4m_smp.o sun4d_smp.o leon_smp.o

arch/sparc/kernel/apc.c

@@ -123,7 +123,7 @@ static long apc_ioctl(struct file *f, unsigned int cmd, unsigned long __arg)
 
 	default:
 		return -EINVAL;
-	};
+	}
 
 	return 0;
 }

arch/sparc/kernel/auxio_32.c

@@ -101,7 +101,7 @@ void set_auxio(unsigned char bits_on, unsigned char bits_off)
 		break;
 	default:
 		panic("Can't set AUXIO register on this machine.");
-	};
+	}
 	spin_unlock_irqrestore(&auxio_lock, flags);
 }
 EXPORT_SYMBOL(set_auxio);

arch/sparc/kernel/chmc.c

@@ -664,7 +664,7 @@ static void chmc_interpret_one_decode_reg(struct chmc *p, int which_bank, u64 va
 	case 0x0:
 		bp->interleave = 16;
 		break;
-	};
+	}
 
 	/* UK[10] is reserved, and UK[11] is not set for the SDRAM
 	 * bank size definition.

arch/sparc/kernel/entry.S

@@ -229,7 +229,7 @@ real_irq_entry:
 #ifdef CONFIG_SMP
 	.globl	patchme_maybe_smp_msg
 
-	cmp	%l7, 12
+	cmp	%l7, 11
 patchme_maybe_smp_msg:
 	bgu	maybe_smp4m_msg
 	 nop
@@ -293,7 +293,7 @@ maybe_smp4m_msg:
 	WRITE_PAUSE
 	wr	%l4, PSR_ET, %psr
 	WRITE_PAUSE
-	sll	%o2, 28, %o2		! shift for simpler checks below
+	sll	%o3, 28, %o2		! shift for simpler checks below
 maybe_smp4m_msg_check_single:
 	andcc	%o2, 0x1, %g0
 	beq,a	maybe_smp4m_msg_check_mask
@@ -1604,7 +1604,7 @@ restore_current:
 	retl
 	 nop
 
-#ifdef CONFIG_PCI
+#ifdef CONFIG_PCIC_PCI
 #include <asm/pcic.h>
 
 	.align	4
@@ -1650,7 +1650,7 @@ pcic_nmi_trap_patch:
 	 rd	%psr, %l0
 	.word	0
 
-#endif /* CONFIG_PCI */
+#endif /* CONFIG_PCIC_PCI */
 
 	.globl	flushw_all
 flushw_all:

arch/sparc/kernel/leon_kernel.c

@@ -236,6 +236,21 @@ static unsigned int _leon_build_device_irq(struct platform_device *op,
 	return leon_build_device_irq(real_irq, handle_simple_irq, "edge", 0);
 }
 
+void leon_update_virq_handling(unsigned int virq,
+			      irq_flow_handler_t flow_handler,
+			      const char *name, int do_ack)
+{
+	unsigned long mask = (unsigned long)irq_get_chip_data(virq);
+
+	mask &= ~LEON_DO_ACK_HW;
+	if (do_ack)
+		mask |= LEON_DO_ACK_HW;
+
+	irq_set_chip_and_handler_name(virq, &leon_irq,
+				      flow_handler, name);
+	irq_set_chip_data(virq, (void *)mask);
+}
+
 void __init leon_init_timers(irq_handler_t counter_fn)
 {
 	int irq, eirq;
@@ -361,6 +376,22 @@ void __init leon_init_timers(irq_handler_t counter_fn)
 		prom_halt();
 	}
 
+#ifdef CONFIG_SMP
+	{
+		unsigned long flags;
+
+		/*
+		 * In SMP, sun4m adds a IPI handler to IRQ trap handler that
+		 * LEON never must take, sun4d and LEON overwrites the branch
+		 * with a NOP.
+		 */
+		local_irq_save(flags);
+		patchme_maybe_smp_msg[0] = 0x01000000; /* NOP out the branch */
+		local_flush_cache_all();
+		local_irq_restore(flags);
+	}
+#endif
+
 	LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx].ctrl,
 			      LEON3_GPTIMER_EN |
 			      LEON3_GPTIMER_RL |

arch/sparc/kernel/leon_pci.c

@@ -0,0 +1,253 @@
+/*
+ * leon_pci.c: LEON Host PCI support
+ *
+ * Copyright (C) 2011 Aeroflex Gaisler AB, Daniel Hellstrom
+ *
+ * Code is partially derived from pcic.c
+ */
+
+#include <linux/of_device.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <asm/leon.h>
+#include <asm/leon_pci.h>
+
+/* The LEON architecture does not rely on a BIOS or bootloader to setup
+ * PCI for us. The Linux generic routines are used to setup resources,
+ * reset values of confuration-space registers settings ae preseved.
+ */
+void leon_pci_init(struct platform_device *ofdev, struct leon_pci_info *info)
+{
+	struct pci_bus *root_bus;
+
+	root_bus = pci_scan_bus_parented(&ofdev->dev, 0, info->ops, info);
+	if (root_bus) {
+		root_bus->resource[0] = &info->io_space;
+		root_bus->resource[1] = &info->mem_space;
+		root_bus->resource[2] = NULL;
+
+		/* Init all PCI devices into PCI tree */
+		pci_bus_add_devices(root_bus);
+
+		/* Setup IRQs of all devices using custom routines */
+		pci_fixup_irqs(pci_common_swizzle, info->map_irq);
+
+		/* Assign devices with resources */
+		pci_assign_unassigned_resources();
+	}
+}
+
+/* PCI Memory and Prefetchable Memory is direct-mapped. However I/O Space is
+ * accessed through a Window which is translated to low 64KB in PCI space, the
+ * first 4KB is not used so 60KB is available.
+ *
+ * This function is used by generic code to translate resource addresses into
+ * PCI addresses.
+ */
+void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
+			     struct resource *res)
+{
+	struct leon_pci_info *info = dev->bus->sysdata;
+
+	region->start = res->start;
+	region->end = res->end;
+
+	if (res->flags & IORESOURCE_IO) {
+		region->start -= (info->io_space.start - 0x1000);
+		region->end -= (info->io_space.start - 0x1000);
+	}
+}
+EXPORT_SYMBOL(pcibios_resource_to_bus);
+
+/* see pcibios_resource_to_bus() comment */
+void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
+			     struct pci_bus_region *region)
+{
+	struct leon_pci_info *info = dev->bus->sysdata;
+
+	res->start = region->start;
+	res->end = region->end;
+
+	if (res->flags & IORESOURCE_IO) {
+		res->start += (info->io_space.start - 0x1000);
+		res->end += (info->io_space.start - 0x1000);
+	}
+}
+EXPORT_SYMBOL(pcibios_bus_to_resource);
+
+void __devinit pcibios_fixup_bus(struct pci_bus *pbus)
+{
+	struct leon_pci_info *info = pbus->sysdata;
+	struct pci_dev *dev;
+	int i, has_io, has_mem;
+	u16 cmd;
+
+	/* Generic PCI bus probing sets these to point at
+	 * &io{port,mem}_resouce which is wrong for us.
+	 */
+	if (pbus->self == NULL) {
+		pbus->resource[0] = &info->io_space;
+		pbus->resource[1] = &info->mem_space;
+		pbus->resource[2] = NULL;
+	}
+
+	list_for_each_entry(dev, &pbus->devices, bus_list) {
+		/*
+		 * We can not rely on that the bootloader has enabled I/O
+		 * or memory access to PCI devices. Instead we enable it here
+		 * if the device has BARs of respective type.
+		 */
+		has_io = has_mem = 0;
+		for (i = 0; i < PCI_ROM_RESOURCE; i++) {
+			unsigned long f = dev->resource[i].flags;
+			if (f & IORESOURCE_IO)
+				has_io = 1;
+			else if (f & IORESOURCE_MEM)
+				has_mem = 1;
+		}
+		/* ROM BARs are mapped into 32-bit memory space */
+		if (dev->resource[PCI_ROM_RESOURCE].end != 0) {
+			dev->resource[PCI_ROM_RESOURCE].flags |=
+							IORESOURCE_ROM_ENABLE;
+			has_mem = 1;
+		}
+		pci_bus_read_config_word(pbus, dev->devfn, PCI_COMMAND, &cmd);
+		if (has_io && !(cmd & PCI_COMMAND_IO)) {
+#ifdef CONFIG_PCI_DEBUG
+			printk(KERN_INFO "LEONPCI: Enabling I/O for dev %s\n",
+					 pci_name(dev));
+#endif
+			cmd |= PCI_COMMAND_IO;
+			pci_bus_write_config_word(pbus, dev->devfn, PCI_COMMAND,
+									cmd);
+		}
+		if (has_mem && !(cmd & PCI_COMMAND_MEMORY)) {
+#ifdef CONFIG_PCI_DEBUG
+			printk(KERN_INFO "LEONPCI: Enabling MEMORY for dev"
+					 "%s\n", pci_name(dev));
+#endif
+			cmd |= PCI_COMMAND_MEMORY;
+			pci_bus_write_config_word(pbus, dev->devfn, PCI_COMMAND,
+									cmd);
+		}
+	}
+}
+
+/*
+ * Other archs parse arguments here.
+ */
+char * __devinit pcibios_setup(char *str)
+{
+	return str;
+}
+
+resource_size_t pcibios_align_resource(void *data, const struct resource *res,
+				resource_size_t size, resource_size_t align)
+{
+	return res->start;
+}
+
+int pcibios_enable_device(struct pci_dev *dev, int mask)
+{
+	return pci_enable_resources(dev, mask);
+}
+
+struct device_node *pci_device_to_OF_node(struct pci_dev *pdev)
+{
+	/*
+	 * Currently the OpenBoot nodes are not connected with the PCI device,
+	 * this is because the LEON PROM does not create PCI nodes. Eventually
+	 * this will change and the same approach as pcic.c can be used to
+	 * match PROM nodes with pci devices.
+	 */
+	return NULL;
+}
+EXPORT_SYMBOL(pci_device_to_OF_node);
+
+void __devinit pcibios_update_irq(struct pci_dev *dev, int irq)
+{
+#ifdef CONFIG_PCI_DEBUG
+	printk(KERN_DEBUG "LEONPCI: Assigning IRQ %02d to %s\n", irq,
+		pci_name(dev));
+#endif
+	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
+}
+
+/* in/out routines taken from pcic.c
+ *
+ * This probably belongs here rather than ioport.c because
+ * we do not want this crud linked into SBus kernels.
+ * Also, think for a moment about likes of floppy.c that
+ * include architecture specific parts. They may want to redefine ins/outs.
+ *
+ * We do not use horrible macros here because we want to
+ * advance pointer by sizeof(size).
+ */
+void outsb(unsigned long addr, const void *src, unsigned long count)
+{
+	while (count) {
+		count -= 1;
+		outb(*(const char *)src, addr);
+		src += 1;
+		/* addr += 1; */
+	}
+}
+EXPORT_SYMBOL(outsb);
+
+void outsw(unsigned long addr, const void *src, unsigned long count)
+{
+	while (count) {
+		count -= 2;
+		outw(*(const short *)src, addr);
+		src += 2;
+		/* addr += 2; */
+	}
+}
+EXPORT_SYMBOL(outsw);
+
+void outsl(unsigned long addr, const void *src, unsigned long count)
+{
+	while (count) {
+		count -= 4;
+		outl(*(const long *)src, addr);
+		src += 4;
+		/* addr += 4; */
+	}
+}
+EXPORT_SYMBOL(outsl);
+
+void insb(unsigned long addr, void *dst, unsigned long count)
+{
+	while (count) {
+		count -= 1;
+		*(unsigned char *)dst = inb(addr);
+		dst += 1;
+		/* addr += 1; */
+	}
+}
+EXPORT_SYMBOL(insb);
+
+void insw(unsigned long addr, void *dst, unsigned long count)
+{
+	while (count) {
+		count -= 2;
+		*(unsigned short *)dst = inw(addr);
+		dst += 2;
+		/* addr += 2; */
+	}
+}
+EXPORT_SYMBOL(insw);
+
+void insl(unsigned long addr, void *dst, unsigned long count)
+{
+	while (count) {
+		count -= 4;
+		/*
+		 * XXX I am sure we are in for an unaligned trap here.
+		 */
+		*(unsigned long *)dst = inl(addr);
+		dst += 4;
+		/* addr += 4; */
+	}
+}
+EXPORT_SYMBOL(insl);

arch/sparc/kernel/leon_pci_grpci2.c

@@ -0,0 +1,897 @@
+/*
+ * leon_pci_grpci2.c: GRPCI2 Host PCI driver
+ *
+ * Copyright (C) 2011 Aeroflex Gaisler AB, Daniel Hellstrom
+ *
+ */
+
+#include <linux/of_device.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <asm/io.h>
+#include <asm/leon.h>
+#include <asm/vaddrs.h>
+#include <asm/sections.h>
+#include <asm/leon_pci.h>
+
+#include "irq.h"
+
+struct grpci2_barcfg {
+	unsigned long pciadr;	/* PCI Space Address */
+	unsigned long ahbadr;	/* PCI Base address mapped to this AHB addr */
+};
+
+/* Device Node Configuration options:
+ *  - barcfgs    : Custom Configuration of Host's 6 target BARs
+ *  - irq_mask   : Limit which PCI interrupts are enabled
+ *  - do_reset   : Force PCI Reset on startup
+ *
+ * barcfgs
+ * =======
+ *
+ * Optional custom Target BAR configuration (see struct grpci2_barcfg). All
+ * addresses are physical. Array always contains 6 elements (len=2*4*6 bytes)
+ *
+ * -1 means not configured (let host driver do default setup).
+ *
+ * [i*2+0] = PCI Address of BAR[i] on target interface
+ * [i*2+1] = Accessing PCI address of BAR[i] result in this AMBA address
+ *
+ *
+ * irq_mask
+ * ========
+ *
+ * Limit which PCI interrupts are enabled. 0=Disable, 1=Enable. By default
+ * all are enabled. Use this when PCI interrupt pins are floating on PCB.
+ * int, len=4.
+ *  bit0 = PCI INTA#
+ *  bit1 = PCI INTB#
+ *  bit2 = PCI INTC#
+ *  bit3 = PCI INTD#
+ *
+ *
+ * reset
+ * =====
+ *
+ * Force PCI reset on startup. int, len=4
+ */
+
+/* Enable Debugging Configuration Space Access */
+#undef GRPCI2_DEBUG_CFGACCESS
+
+/*
+ * GRPCI2 APB Register MAP
+ */
+struct grpci2_regs {
+	unsigned int ctrl;		/* 0x00 Control */
+	unsigned int sts_cap;		/* 0x04 Status / Capabilities */
+	int res1;			/* 0x08 */
+	unsigned int io_map;		/* 0x0C I/O Map address */
+	unsigned int dma_ctrl;		/* 0x10 DMA */
+	unsigned int dma_bdbase;	/* 0x14 DMA */
+	int res2[2];			/* 0x18 */
+	unsigned int bars[6];		/* 0x20 read-only PCI BARs */
+	int res3[2];			/* 0x38 */
+	unsigned int ahbmst_map[16];	/* 0x40 AHB->PCI Map per AHB Master */
+
+	/* PCI Trace Buffer Registers (OPTIONAL) */
+	unsigned int t_ctrl;		/* 0x80 */
+	unsigned int t_cnt;		/* 0x84 */
+	unsigned int t_adpat;		/* 0x88 */
+	unsigned int t_admask;		/* 0x8C */
+	unsigned int t_sigpat;		/* 0x90 */
+	unsigned int t_sigmask;		/* 0x94 */
+	unsigned int t_adstate;		/* 0x98 */
+	unsigned int t_sigstate;	/* 0x9C */
+};
+
+#define REGLOAD(a)	(be32_to_cpu(__raw_readl(&(a))))
+#define REGSTORE(a, v)	(__raw_writel(cpu_to_be32(v), &(a)))
+
+#define CTRL_BUS_BIT 16
+
+#define CTRL_RESET (1<<31)
+#define CTRL_SI (1<<27)
+#define CTRL_PE (1<<26)
+#define CTRL_EI (1<<25)
+#define CTRL_ER (1<<24)
+#define CTRL_BUS (0xff<<CTRL_BUS_BIT)
+#define CTRL_HOSTINT 0xf
+
+#define STS_HOST_BIT	31
+#define STS_MST_BIT	30
+#define STS_TAR_BIT	29
+#define STS_DMA_BIT	28
+#define STS_DI_BIT	27
+#define STS_HI_BIT	26
+#define STS_IRQMODE_BIT	24
+#define STS_TRACE_BIT	23
+#define STS_CFGERRVALID_BIT 20
+#define STS_CFGERR_BIT	19
+#define STS_INTTYPE_BIT	12
+#define STS_INTSTS_BIT	8
+#define STS_FDEPTH_BIT	2
+#define STS_FNUM_BIT	0
+
+#define STS_HOST	(1<<STS_HOST_BIT)
+#define STS_MST		(1<<STS_MST_BIT)
+#define STS_TAR		(1<<STS_TAR_BIT)
+#define STS_DMA		(1<<STS_DMA_BIT)
+#define STS_DI		(1<<STS_DI_BIT)
+#define STS_HI		(1<<STS_HI_BIT)
+#define STS_IRQMODE	(0x3<<STS_IRQMODE_BIT)
+#define STS_TRACE	(1<<STS_TRACE_BIT)
+#define STS_CFGERRVALID	(1<<STS_CFGERRVALID_BIT)
+#define STS_CFGERR	(1<<STS_CFGERR_BIT)
+#define STS_INTTYPE	(0x3f<<STS_INTTYPE_BIT)
+#define STS_INTSTS	(0xf<<STS_INTSTS_BIT)
+#define STS_FDEPTH	(0x7<<STS_FDEPTH_BIT)
+#define STS_FNUM	(0x3<<STS_FNUM_BIT)
+
+#define STS_ISYSERR	(1<<17)
+#define STS_IDMA	(1<<16)
+#define STS_IDMAERR	(1<<15)
+#define STS_IMSTABRT	(1<<14)
+#define STS_ITGTABRT	(1<<13)
+#define STS_IPARERR	(1<<12)
+
+#define STS_ERR_IRQ (STS_ISYSERR | STS_IMSTABRT | STS_ITGTABRT | STS_IPARERR)
+
+struct grpci2_bd_chan {
+	unsigned int ctrl;	/* 0x00 DMA Control */
+	unsigned int nchan;	/* 0x04 Next DMA Channel Address */
+	unsigned int nbd;	/* 0x08 Next Data Descriptor in chan */
+	unsigned int res;	/* 0x0C Reserved */
+};
+
+#define BD_CHAN_EN		0x80000000
+#define BD_CHAN_TYPE		0x00300000
+#define BD_CHAN_BDCNT		0x0000ffff
+#define BD_CHAN_EN_BIT		31
+#define BD_CHAN_TYPE_BIT	20
+#define BD_CHAN_BDCNT_BIT	0
+
+struct grpci2_bd_data {
+	unsigned int ctrl;	/* 0x00 DMA Data Control */
+	unsigned int pci_adr;	/* 0x04 PCI Start Address */
+	unsigned int ahb_adr;	/* 0x08 AHB Start address */
+	unsigned int next;	/* 0x0C Next Data Descriptor in chan */
+};
+
+#define BD_DATA_EN		0x80000000
+#define BD_DATA_IE		0x40000000
+#define BD_DATA_DR		0x20000000
+#define BD_DATA_TYPE		0x00300000
+#define BD_DATA_ER		0x00080000
+#define BD_DATA_LEN		0x0000ffff
+#define BD_DATA_EN_BIT		31
+#define BD_DATA_IE_BIT		30
+#define BD_DATA_DR_BIT		29
+#define BD_DATA_TYPE_BIT	20
+#define BD_DATA_ER_BIT		19
+#define BD_DATA_LEN_BIT		0
+
+/* GRPCI2 Capability */
+struct grpci2_cap_first {
+	unsigned int ctrl;
+	unsigned int pci2ahb_map[6];
+	unsigned int ext2ahb_map;
+	unsigned int io_map;
+	unsigned int pcibar_size[6];
+};
+#define CAP9_CTRL_OFS 0
+#define CAP9_BAR_OFS 0x4
+#define CAP9_IOMAP_OFS 0x20
+#define CAP9_BARSIZE_OFS 0x24
+
+struct grpci2_priv {
+	struct leon_pci_info	info; /* must be on top of this structure */
+	struct grpci2_regs	*regs;
+	char			irq;
+	char			irq_mode; /* IRQ Mode from CAPSTS REG */
+	char			bt_enabled;
+	char			do_reset;
+	char			irq_mask;
+	u32			pciid; /* PCI ID of Host */
+	unsigned char		irq_map[4];
+
+	/* Virtual IRQ numbers */
+	unsigned int		virq_err;
+	unsigned int		virq_dma;
+
+	/* AHB PCI Windows */
+	unsigned long		pci_area;	/* MEMORY */
+	unsigned long		pci_area_end;
+	unsigned long		pci_io;		/* I/O */
+	unsigned long		pci_conf;	/* CONFIGURATION */
+	unsigned long		pci_conf_end;
+	unsigned long		pci_io_va;
+
+	struct grpci2_barcfg	tgtbars[6];
+};
+
+DEFINE_SPINLOCK(grpci2_dev_lock);
+struct grpci2_priv *grpci2priv;
+
+int grpci2_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+	struct grpci2_priv *priv = dev->bus->sysdata;
+	int irq_group;
+
+	/* Use default IRQ decoding on PCI BUS0 according slot numbering */
+	irq_group = slot & 0x3;
+	pin = ((pin - 1) + irq_group) & 0x3;
+
+	return priv->irq_map[pin];
+}
+
+static int grpci2_cfg_r32(struct grpci2_priv *priv, unsigned int bus,
+				unsigned int devfn, int where, u32 *val)
+{
+	unsigned int *pci_conf;
+	unsigned long flags;
+	u32 tmp;
+
+	if (where & 0x3)
+		return -EINVAL;
+
+	if (bus == 0 && PCI_SLOT(devfn) != 0)
+		devfn += (0x8 * 6);
+
+	/* Select bus */
+	spin_lock_irqsave(&grpci2_dev_lock, flags);
+	REGSTORE(priv->regs->ctrl, (REGLOAD(priv->regs->ctrl) & ~(0xff << 16)) |
+				   (bus << 16));
+	spin_unlock_irqrestore(&grpci2_dev_lock, flags);
+
+	/* clear old status */
+	REGSTORE(priv->regs->sts_cap, (STS_CFGERR | STS_CFGERRVALID));
+
+	pci_conf = (unsigned int *) (priv->pci_conf |
+						(devfn << 8) | (where & 0xfc));
+	tmp = LEON3_BYPASS_LOAD_PA(pci_conf);
+
+	/* Wait until GRPCI2 signals that CFG access is done, it should be
+	 * done instantaneously unless a DMA operation is ongoing...
+	 */
+	while ((REGLOAD(priv->regs->sts_cap) & STS_CFGERRVALID) == 0)
+		;
+
+	if (REGLOAD(priv->regs->sts_cap) & STS_CFGERR) {
+		*val = 0xffffffff;
+	} else {
+		/* Bus always little endian (unaffected by byte-swapping) */
+		*val = flip_dword(tmp);
+	}
+
+	return 0;
+}
+
+static int grpci2_cfg_r16(struct grpci2_priv *priv, unsigned int bus,
+				unsigned int devfn, int where, u32 *val)
+{
+	u32 v;
+	int ret;
+
+	if (where & 0x1)
+		return -EINVAL;
+	ret = grpci2_cfg_r32(priv, bus, devfn, where & ~0x3, &v);
+	*val = 0xffff & (v >> (8 * (where & 0x3)));
+	return ret;
+}
+
+static int grpci2_cfg_r8(struct grpci2_priv *priv, unsigned int bus,
+				unsigned int devfn, int where, u32 *val)
+{
+	u32 v;
+	int ret;
+
+	ret = grpci2_cfg_r32(priv, bus, devfn, where & ~0x3, &v);
+	*val = 0xff & (v >> (8 * (where & 3)));
+
+	return ret;
+}
+
+static int grpci2_cfg_w32(struct grpci2_priv *priv, unsigned int bus,
+				unsigned int devfn, int where, u32 val)
+{
+	unsigned int *pci_conf;
+	unsigned long flags;
+
+	if (where & 0x3)
+		return -EINVAL;
+
+	if (bus == 0 && PCI_SLOT(devfn) != 0)
+		devfn += (0x8 * 6);
+
+	/* Select bus */
+	spin_lock_irqsave(&grpci2_dev_lock, flags);
+	REGSTORE(priv->regs->ctrl, (REGLOAD(priv->regs->ctrl) & ~(0xff << 16)) |
+				   (bus << 16));
+	spin_unlock_irqrestore(&grpci2_dev_lock, flags);
+
+	/* clear old status */
+	REGSTORE(priv->regs->sts_cap, (STS_CFGERR | STS_CFGERRVALID));
+
+	pci_conf = (unsigned int *) (priv->pci_conf |
+						(devfn << 8) | (where & 0xfc));
+	LEON3_BYPASS_STORE_PA(pci_conf, flip_dword(val));
+
+	/* Wait until GRPCI2 signals that CFG access is done, it should be
+	 * done instantaneously unless a DMA operation is ongoing...
+	 */
+	while ((REGLOAD(priv->regs->sts_cap) & STS_CFGERRVALID) == 0)
+		;
+
+	return 0;
+}
+
+static int grpci2_cfg_w16(struct grpci2_priv *priv, unsigned int bus,
+				unsigned int devfn, int where, u32 val)
+{
+	int ret;
+	u32 v;
+
+	if (where & 0x1)
+		return -EINVAL;
+	ret = grpci2_cfg_r32(priv, bus, devfn, where&~3, &v);
+	if (ret)
+		return ret;
+	v = (v & ~(0xffff << (8 * (where & 0x3)))) |
+	    ((0xffff & val) << (8 * (where & 0x3)));
+	return grpci2_cfg_w32(priv, bus, devfn, where & ~0x3, v);
+}
+
+static int grpci2_cfg_w8(struct grpci2_priv *priv, unsigned int bus,
+				unsigned int devfn, int where, u32 val)
+{
+	int ret;
+	u32 v;
+
+	ret = grpci2_cfg_r32(priv, bus, devfn, where & ~0x3, &v);
+	if (ret != 0)
+		return ret;
+	v = (v & ~(0xff << (8 * (where & 0x3)))) |
+	    ((0xff & val) << (8 * (where & 0x3)));
+	return grpci2_cfg_w32(priv, bus, devfn, where & ~0x3, v);
+}
+
+/* Read from Configuration Space. When entering here the PCI layer has taken
+ * the pci_lock spinlock and IRQ is off.
+ */
+static int grpci2_read_config(struct pci_bus *bus, unsigned int devfn,
+			      int where, int size, u32 *val)
+{
+	struct grpci2_priv *priv = grpci2priv;
+	unsigned int busno = bus->number;
+	int ret;
+
+	if (PCI_SLOT(devfn) > 15 || (PCI_SLOT(devfn) == 0 && busno == 0)) {
+		*val = ~0;
+		return 0;
+	}
+
+	switch (size) {
+	case 1:
+		ret = grpci2_cfg_r8(priv, busno, devfn, where, val);
+		break;
+	case 2:
+		ret = grpci2_cfg_r16(priv, busno, devfn, where, val);
+		break;
+	case 4:
+		ret = grpci2_cfg_r32(priv, busno, devfn, where, val);
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+#ifdef GRPCI2_DEBUG_CFGACCESS
+	printk(KERN_INFO "grpci2_read_config: [%02x:%02x:%x] ofs=%d val=%x "
+		"size=%d\n", busno, PCI_SLOT(devfn), PCI_FUNC(devfn), where,
+		*val, size);
+#endif
+
+	return ret;
+}
+
+/* Write to Configuration Space. When entering here the PCI layer has taken
+ * the pci_lock spinlock and IRQ is off.
+ */
+static int grpci2_write_config(struct pci_bus *bus, unsigned int devfn,
+			       int where, int size, u32 val)
+{
+	struct grpci2_priv *priv = grpci2priv;
+	unsigned int busno = bus->number;
+
+	if (PCI_SLOT(devfn) > 15 || (PCI_SLOT(devfn) == 0 && busno == 0))
+		return 0;
+
+#ifdef GRPCI2_DEBUG_CFGACCESS
+	printk(KERN_INFO "grpci2_write_config: [%02x:%02x:%x] ofs=%d size=%d "
+		"val=%x\n", busno, PCI_SLOT(devfn), PCI_FUNC(devfn),
+		where, size, val);
+#endif
+
+	switch (size) {
+	default:
+		return -EINVAL;
+	case 1:
+		return grpci2_cfg_w8(priv, busno, devfn, where, val);
+	case 2:
+		return grpci2_cfg_w16(priv, busno, devfn, where, val);
+	case 4:
+		return grpci2_cfg_w32(priv, busno, devfn, where, val);
+	}
+}
+
+static struct pci_ops grpci2_ops = {
+	.read =		grpci2_read_config,
+	.write =	grpci2_write_config,
+};
+
+/* GENIRQ IRQ chip implementation for GRPCI2 irqmode=0..2. In configuration
+ * 3 where all PCI Interrupts has a separate IRQ on the system IRQ controller
+ * this is not needed and the standard IRQ controller can be used.
+ */
+
+static void grpci2_mask_irq(struct irq_data *data)
+{
+	unsigned long flags;
+	unsigned int irqidx;
+	struct grpci2_priv *priv = grpci2priv;
+
+	irqidx = (unsigned int)data->chip_data - 1;
+	if (irqidx > 3) /* only mask PCI interrupts here */
+		return;
+
+	spin_lock_irqsave(&grpci2_dev_lock, flags);
+	REGSTORE(priv->regs->ctrl, REGLOAD(priv->regs->ctrl) & ~(1 << irqidx));
+	spin_unlock_irqrestore(&grpci2_dev_lock, flags);
+}
+
+static void grpci2_unmask_irq(struct irq_data *data)
+{
+	unsigned long flags;
+	unsigned int irqidx;
+	struct grpci2_priv *priv = grpci2priv;
+
+	irqidx = (unsigned int)data->chip_data - 1;
+	if (irqidx > 3) /* only unmask PCI interrupts here */
+		return;
+
+	spin_lock_irqsave(&grpci2_dev_lock, flags);
+	REGSTORE(priv->regs->ctrl, REGLOAD(priv->regs->ctrl) | (1 << irqidx));
+	spin_unlock_irqrestore(&grpci2_dev_lock, flags);
+}
+
+static unsigned int grpci2_startup_irq(struct irq_data *data)
+{
+	grpci2_unmask_irq(data);
+	return 0;
+}
+
+static void grpci2_shutdown_irq(struct irq_data *data)
+{
+	grpci2_mask_irq(data);
+}
+
+static struct irq_chip grpci2_irq = {
+	.name		= "grpci2",
+	.irq_startup	= grpci2_startup_irq,
+	.irq_shutdown	= grpci2_shutdown_irq,
+	.irq_mask	= grpci2_mask_irq,
+	.irq_unmask	= grpci2_unmask_irq,
+};
+
+/* Handle one or multiple IRQs from the PCI core */
+static void grpci2_pci_flow_irq(unsigned int irq, struct irq_desc *desc)
+{
+	struct grpci2_priv *priv = grpci2priv;
+	int i, ack = 0;
+	unsigned int ctrl, sts_cap, pci_ints;
+
+	ctrl = REGLOAD(priv->regs->ctrl);
+	sts_cap = REGLOAD(priv->regs->sts_cap);
+
+	/* Error Interrupt? */
+	if (sts_cap & STS_ERR_IRQ) {
+		generic_handle_irq(priv->virq_err);
+		ack = 1;
+	}
+
+	/* PCI Interrupt? */
+	pci_ints = ((~sts_cap) >> STS_INTSTS_BIT) & ctrl & CTRL_HOSTINT;
+	if (pci_ints) {
+		/* Call respective PCI Interrupt handler */
+		for (i = 0; i < 4; i++) {
+			if (pci_ints & (1 << i))
+				generic_handle_irq(priv->irq_map[i]);
+		}
+		ack = 1;
+	}
+
+	/*
+	 * Decode DMA Interrupt only when shared with Err and PCI INTX#, when
+	 * the DMA is a unique IRQ the DMA interrupts doesn't end up here, they
+	 * goes directly to DMA ISR.
+	 */
+	if ((priv->irq_mode == 0) && (sts_cap & (STS_IDMA | STS_IDMAERR))) {
+		generic_handle_irq(priv->virq_dma);
+		ack = 1;
+	}
+
+	/*
+	 * Call "first level" IRQ chip end-of-irq handler. It will ACK LEON IRQ
+	 * Controller, this must be done after IRQ sources have been handled to
+	 * avoid double IRQ generation
+	 */
+	if (ack)
+		desc->irq_data.chip->irq_eoi(&desc->irq_data);
+}
+
+/* Create a virtual IRQ */
+static unsigned int grpci2_build_device_irq(unsigned int irq)
+{
+	unsigned int virq = 0, pil;
+
+	pil = 1 << 8;
+	virq = irq_alloc(irq, pil);
+	if (virq == 0)
+		goto out;
+
+	irq_set_chip_and_handler_name(virq, &grpci2_irq, handle_simple_irq,
+				      "pcilvl");
+	irq_set_chip_data(virq, (void *)irq);
+
+out:
+	return virq;
+}
+
+void grpci2_hw_init(struct grpci2_priv *priv)
+{
+	u32 ahbadr, pciadr, bar_sz, capptr, io_map, data;
+	struct grpci2_regs *regs = priv->regs;
+	int i;
+	struct grpci2_barcfg *barcfg = priv->tgtbars;
+
+	/* Reset any earlier setup */
+	if (priv->do_reset) {
+		printk(KERN_INFO "GRPCI2: Resetting PCI bus\n");
+		REGSTORE(regs->ctrl, CTRL_RESET);
+		ssleep(1); /* Wait for boards to settle */
+	}
+	REGSTORE(regs->ctrl, 0);
+	REGSTORE(regs->sts_cap, ~0); /* Clear Status */
+	REGSTORE(regs->dma_ctrl, 0);
+	REGSTORE(regs->dma_bdbase, 0);
+
+	/* Translate I/O accesses to 0, I/O Space always @ PCI low 64Kbytes */
+	REGSTORE(regs->io_map, REGLOAD(regs->io_map) & 0x0000ffff);
+
+	/* set 1:1 mapping between AHB -> PCI memory space, for all Masters
+	 * Each AHB master has it's own mapping registers. Max 16 AHB masters.
+	 */
+	for (i = 0; i < 16; i++)
+		REGSTORE(regs->ahbmst_map[i], priv->pci_area);
+
+	/* Get the GRPCI2 Host PCI ID */
+	grpci2_cfg_r32(priv, 0, 0, PCI_VENDOR_ID, &priv->pciid);
+
+	/* Get address to first (always defined) capability structure */
+	grpci2_cfg_r8(priv, 0, 0, PCI_CAPABILITY_LIST, &capptr);
+
+	/* Enable/Disable Byte twisting */
+	grpci2_cfg_r32(priv, 0, 0, capptr+CAP9_IOMAP_OFS, &io_map);
+	io_map = (io_map & ~0x1) | (priv->bt_enabled ? 1 : 0);
+	grpci2_cfg_w32(priv, 0, 0, capptr+CAP9_IOMAP_OFS, io_map);
+
+	/* Setup the Host's PCI Target BARs for other peripherals to access,
+	 * and do DMA to the host's memory. The target BARs can be sized and
+	 * enabled individually.
+	 *
+	 * User may set custom target BARs, but default is:
+	 * The first BARs is used to map kernel low (DMA is part of normal
+	 * region on sparc which is SRMMU_MAXMEM big) main memory 1:1 to the
+	 * PCI bus, the other BARs are disabled. We assume that the first BAR
+	 * is always available.
+	 */
+	for (i = 0; i < 6; i++) {
+		if (barcfg[i].pciadr != ~0 && barcfg[i].ahbadr != ~0) {
+			/* Target BARs must have the proper alignment */
+			ahbadr = barcfg[i].ahbadr;
+			pciadr = barcfg[i].pciadr;
+			bar_sz = ((pciadr - 1) & ~pciadr) + 1;
+		} else {
+			if (i == 0) {
+				/* Map main memory */
+				bar_sz = 0xf0000008; /* 256MB prefetchable */
+				ahbadr = 0xf0000000 & (u32)__pa(PAGE_ALIGN(
+					(unsigned long) &_end));
+				pciadr = ahbadr;
+			} else {
+				bar_sz = 0;
+				ahbadr = 0;
+				pciadr = 0;
+			}
+		}
+		grpci2_cfg_w32(priv, 0, 0, capptr+CAP9_BARSIZE_OFS+i*4, bar_sz);
+		grpci2_cfg_w32(priv, 0, 0, PCI_BASE_ADDRESS_0+i*4, pciadr);
+		grpci2_cfg_w32(priv, 0, 0, capptr+CAP9_BAR_OFS+i*4, ahbadr);
+		printk(KERN_INFO "        TGT BAR[%d]: 0x%08x (PCI)-> 0x%08x\n",
+			i, pciadr, ahbadr);
+	}
+
+	/* set as bus master and enable pci memory responses */
+	grpci2_cfg_r32(priv, 0, 0, PCI_COMMAND, &data);
+	data |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
+	grpci2_cfg_w32(priv, 0, 0, PCI_COMMAND, data);
+
+	/* Enable Error respone (CPU-TRAP) on illegal memory access. */
+	REGSTORE(regs->ctrl, CTRL_ER | CTRL_PE);
+}
+
+static irqreturn_t grpci2_jump_interrupt(int irq, void *arg)
+{
+	printk(KERN_ERR "GRPCI2: Jump IRQ happened\n");
+	return IRQ_NONE;
+}
+
+/* Handle GRPCI2 Error Interrupt */
+static irqreturn_t grpci2_err_interrupt(int irq, void *arg)
+{
+	struct grpci2_priv *priv = arg;
+	struct grpci2_regs *regs = priv->regs;
+	unsigned int status;
+
+	status = REGLOAD(regs->sts_cap);
+	if ((status & STS_ERR_IRQ) == 0)
+		return IRQ_NONE;
+
+	if (status & STS_IPARERR)
+		printk(KERN_ERR "GRPCI2: Parity Error\n");
+
+	if (status & STS_ITGTABRT)
+		printk(KERN_ERR "GRPCI2: Target Abort\n");
+
+	if (status & STS_IMSTABRT)
+		printk(KERN_ERR "GRPCI2: Master Abort\n");
+
+	if (status & STS_ISYSERR)
+		printk(KERN_ERR "GRPCI2: System Error\n");
+
+	/* Clear handled INT TYPE IRQs */
+	REGSTORE(regs->sts_cap, status & STS_ERR_IRQ);
+
+	return IRQ_HANDLED;
+}
+
+static int __devinit grpci2_of_probe(struct platform_device *ofdev)
+{
+	struct grpci2_regs *regs;
+	struct grpci2_priv *priv;
+	int err, i, len;
+	const int *tmp;
+	unsigned int capability;
+
+	if (grpci2priv) {
+		printk(KERN_ERR "GRPCI2: only one GRPCI2 core supported\n");
+		return -ENODEV;
+	}
+
+	if (ofdev->num_resources < 3) {
+		printk(KERN_ERR "GRPCI2: not enough APB/AHB resources\n");
+		return -EIO;
+	}
+
+	/* Find Device Address */
+	regs = of_ioremap(&ofdev->resource[0], 0,
+			  resource_size(&ofdev->resource[0]),
+			  "grlib-grpci2 regs");
+	if (regs == NULL) {
+		printk(KERN_ERR "GRPCI2: ioremap failed\n");
+		return -EIO;
+	}
+
+	/*
+	 * Check that we're in Host Slot and that we can act as a Host Bridge
+	 * and not only as target.
+	 */
+	capability = REGLOAD(regs->sts_cap);
+	if ((capability & STS_HOST) || !(capability & STS_MST)) {
+		printk(KERN_INFO "GRPCI2: not in host system slot\n");
+		err = -EIO;
+		goto err1;
+	}
+
+	priv = grpci2priv = kzalloc(sizeof(struct grpci2_priv), GFP_KERNEL);
+	if (grpci2priv == NULL) {
+		err = -ENOMEM;
+		goto err1;
+	}
+	memset(grpci2priv, 0, sizeof(*grpci2priv));
+	priv->regs = regs;
+	priv->irq = ofdev->archdata.irqs[0]; /* BASE IRQ */
+	priv->irq_mode = (capability & STS_IRQMODE) >> STS_IRQMODE_BIT;
+
+	printk(KERN_INFO "GRPCI2: host found at %p, irq%d\n", regs, priv->irq);
+
+	/* Byte twisting should be made configurable from kernel command line */
+	priv->bt_enabled = 1;
+
+	/* Let user do custom Target BAR assignment */
+	tmp = of_get_property(ofdev->dev.of_node, "barcfg", &len);
+	if (tmp && (len == 2*4*6))
+		memcpy(priv->tgtbars, tmp, 2*4*6);
+	else
+		memset(priv->tgtbars, -1, 2*4*6);
+
+	/* Limit IRQ unmasking in irq_mode 2 and 3 */
+	tmp = of_get_property(ofdev->dev.of_node, "irq_mask", &len);
+	if (tmp && (len == 4))
+		priv->do_reset = *tmp;
+	else
+		priv->irq_mask = 0xf;
+
+	/* Optional PCI reset. Force PCI reset on startup */
+	tmp = of_get_property(ofdev->dev.of_node, "reset", &len);
+	if (tmp && (len == 4))
+		priv->do_reset = *tmp;
+	else
+		priv->do_reset = 0;
+
+	/* Find PCI Memory, I/O and Configuration Space Windows */
+	priv->pci_area = ofdev->resource[1].start;
+	priv->pci_area_end = ofdev->resource[1].end+1;
+	priv->pci_io = ofdev->resource[2].start;
+	priv->pci_conf = ofdev->resource[2].start + 0x10000;
+	priv->pci_conf_end = priv->pci_conf + 0x10000;
+	priv->pci_io_va = (unsigned long)ioremap(priv->pci_io, 0x10000);
+	if (!priv->pci_io_va) {
+		err = -EIO;
+		goto err2;
+	}
+
+	printk(KERN_INFO
+		"GRPCI2: MEMORY SPACE [0x%08lx - 0x%08lx]\n"
+		"        I/O    SPACE [0x%08lx - 0x%08lx]\n"
+		"        CONFIG SPACE [0x%08lx - 0x%08lx]\n",
+		priv->pci_area, priv->pci_area_end-1,
+		priv->pci_io, priv->pci_conf-1,
+		priv->pci_conf, priv->pci_conf_end-1);
+
+	/*
+	 * I/O Space resources in I/O Window mapped into Virtual Adr Space
+	 * We never use low 4KB because some devices seem have problems using
+	 * address 0.
+	 */
+	memset(&priv->info.io_space, 0, sizeof(struct resource));
+	priv->info.io_space.name = "GRPCI2 PCI I/O Space";
+	priv->info.io_space.start = priv->pci_io_va + 0x1000;
+	priv->info.io_space.end = priv->pci_io_va + 0x10000 - 1;
+	priv->info.io_space.flags = IORESOURCE_IO;
+
+	/*
+	 * GRPCI2 has no prefetchable memory, map everything as
+	 * non-prefetchable memory
+	 */
+	memset(&priv->info.mem_space, 0, sizeof(struct resource));
+	priv->info.mem_space.name = "GRPCI2 PCI MEM Space";
+	priv->info.mem_space.start = priv->pci_area;
+	priv->info.mem_space.end = priv->pci_area_end - 1;
+	priv->info.mem_space.flags = IORESOURCE_MEM;
+
+	if (request_resource(&iomem_resource, &priv->info.mem_space) < 0)
+		goto err3;
+	if (request_resource(&ioport_resource, &priv->info.io_space) < 0)
+		goto err4;
+
+	grpci2_hw_init(priv);
+
+	/*
+	 * Get PCI Interrupt to System IRQ mapping and setup IRQ handling
+	 * Error IRQ always on PCI INTA.
+	 */
+	if (priv->irq_mode < 2) {
+		/* All PCI interrupts are shared using the same system IRQ */
+		leon_update_virq_handling(priv->irq, grpci2_pci_flow_irq,
+					 "pcilvl", 0);
+
+		priv->irq_map[0] = grpci2_build_device_irq(1);
+		priv->irq_map[1] = grpci2_build_device_irq(2);
+		priv->irq_map[2] = grpci2_build_device_irq(3);
+		priv->irq_map[3] = grpci2_build_device_irq(4);
+
+		priv->virq_err = grpci2_build_device_irq(5);
+		if (priv->irq_mode & 1)
+			priv->virq_dma = ofdev->archdata.irqs[1];
+		else
+			priv->virq_dma = grpci2_build_device_irq(6);
+
+		/* Enable IRQs on LEON IRQ controller */
+		err = request_irq(priv->irq, grpci2_jump_interrupt, 0,
+					"GRPCI2_JUMP", priv);
+		if (err)
+			printk(KERN_ERR "GRPCI2: ERR IRQ request failed\n");
+	} else {
+		/* All PCI interrupts have an unique IRQ interrupt */
+		for (i = 0; i < 4; i++) {
+			/* Make LEON IRQ layer handle level IRQ by acking */
+			leon_update_virq_handling(ofdev->archdata.irqs[i],
+						 handle_fasteoi_irq, "pcilvl",
+						 1);
+			priv->irq_map[i] = ofdev->archdata.irqs[i];
+		}
+		priv->virq_err = priv->irq_map[0];
+		if (priv->irq_mode & 1)
+			priv->virq_dma = ofdev->archdata.irqs[4];
+		else
+			priv->virq_dma = priv->irq_map[0];
+
+		/* Unmask all PCI interrupts, request_irq will not do that */
+		REGSTORE(regs->ctrl, REGLOAD(regs->ctrl)|(priv->irq_mask&0xf));
+	}
+
+	/* Setup IRQ handler for non-configuration space access errors */
+	err = request_irq(priv->virq_err, grpci2_err_interrupt, IRQF_SHARED,
+				"GRPCI2_ERR", priv);
+	if (err) {
+		printk(KERN_DEBUG "GRPCI2: ERR VIRQ request failed: %d\n", err);
+		goto err5;
+	}
+
+	/*
+	 * Enable Error Interrupts. PCI interrupts are unmasked once request_irq
+	 * is called by the PCI Device drivers
+	 */
+	REGSTORE(regs->ctrl, REGLOAD(regs->ctrl) | CTRL_EI | CTRL_SI);
+
+	/* Init common layer and scan buses */
+	priv->info.ops = &grpci2_ops;
+	priv->info.map_irq = grpci2_map_irq;
+	leon_pci_init(ofdev, &priv->info);
+
+	return 0;
+
+err5:
+	release_resource(&priv->info.io_space);
+err4:
+	release_resource(&priv->info.mem_space);
+err3:
+	err = -ENOMEM;
+	iounmap((void *)priv->pci_io_va);
+err2:
+	kfree(priv);
+err1:
+	of_iounmap(&ofdev->resource[0], regs,
+		resource_size(&ofdev->resource[0]));
+	return err;
+}
+
+static struct of_device_id grpci2_of_match[] = {
+	{
+	 .name = "GAISLER_GRPCI2",
+	 },
+	{
+	 .name = "01_07c",
+	 },
+	{},
+};
+
+static struct platform_driver grpci2_of_driver = {
+	.driver = {
+		.name = "grpci2",
+		.owner = THIS_MODULE,
+		.of_match_table = grpci2_of_match,
+	},
+	.probe = grpci2_of_probe,
+};
+
+static int __init grpci2_init(void)
+{
+	return platform_driver_register(&grpci2_of_driver);
+}
+
+subsys_initcall(grpci2_init);

arch/sparc/kernel/module.c

@@ -214,7 +214,7 @@ int apply_relocate_add(Elf_Shdr *sechdrs,
 			       me->name,
 			       (int) (ELF_R_TYPE(rel[i].r_info) & 0xff));
 			return -ENOEXEC;
-		};
+		}
 	}
 	return 0;
 }

arch/sparc/kernel/pci_common.c

@@ -281,7 +281,7 @@ static int sun4v_read_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
 	case 4:
 		*value = ret & 0xffffffff;
 		break;
-	};
+	}
 
 
 	return PCIBIOS_SUCCESSFUL;
@@ -456,7 +456,7 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm)
 
 		default:
 			break;
-		};
+		}
 	}
 
 	if (!saw_io || !saw_mem) {

arch/sparc/kernel/pci_schizo.c

@@ -264,7 +264,7 @@ static void schizo_check_iommu_error_pbm(struct pci_pbm_info *pbm,
 		default:
 			type_string = "ECC Error";
 			break;
-		};
+		}
 		printk("%s: IOMMU Error, type[%s]\n",
 		       pbm->name, type_string);
 
@@ -319,7 +319,7 @@ static void schizo_check_iommu_error_pbm(struct pci_pbm_info *pbm,
 			default:
 				type_string = "ECC Error";
 				break;
-			};
+			}
 			printk("%s: IOMMU TAG(%d)[error(%s) ctx(%x) wr(%d) str(%d) "
 			       "sz(%dK) vpg(%08lx)]\n",
 			       pbm->name, i, type_string,
@@ -1328,7 +1328,7 @@ static int __devinit schizo_pbm_init(struct pci_pbm_info *pbm,
 	default:
 		chipset_name = "SCHIZO";
 		break;
-	};
+	}
 
 	/* For SCHIZO, three OBP regs:
 	 * 1) PBM controller regs

arch/sparc/kernel/prom_irqtrans.c

@@ -694,7 +694,7 @@ static unsigned int sbus_of_build_irq(struct device_node *dp,
 		case 3:
 			iclr = reg_base + SYSIO_ICLR_SLOT3;
 			break;
-		};
+		}
 
 		iclr += ((unsigned long)sbus_level - 1UL) * 8UL;
 	}

arch/sparc/kernel/psycho_common.c

@@ -228,7 +228,7 @@ void psycho_check_iommu_error(struct pci_pbm_info *pbm,
 		default:
 			type_str = "ECC Error";
 			break;
-		};
+		}
 		printk(KERN_ERR "%s: IOMMU Error, type[%s]\n",
 		       pbm->name, type_str);
 

arch/sparc/kernel/sbus.c

@@ -97,7 +97,7 @@ void sbus_set_sbus64(struct device *dev, int bursts)
 
 	default:
 		return;
-	};
+	}
 
 	val = upa_readq(cfg_reg);
 	if (val & (1UL << 14UL)) {
@@ -244,7 +244,7 @@ static unsigned int sbus_build_irq(struct platform_device *op, unsigned int ino)
 		case 3:
 			iclr = reg_base + SYSIO_ICLR_SLOT3;
 			break;
-		};
+		}
 
 		iclr += ((unsigned long)sbus_level - 1UL) * 8UL;
 	}

arch/sparc/kernel/setup_32.c

@@ -267,7 +267,7 @@ void __init setup_arch(char **cmdline_p)
 	default:
 		printk("UNKNOWN!\n");
 		break;
-	};
+	}
 
 #ifdef CONFIG_DUMMY_CONSOLE
 	conswitchp = &dummy_con;

arch/sparc/kernel/setup_64.c

@@ -209,7 +209,7 @@ void __init per_cpu_patch(void)
 		default:
 			prom_printf("Unknown cpu type, halting.\n");
 			prom_halt();
-		};
+		}
 
 		*(unsigned int *) (addr +  0) = insns[0];
 		wmb();

arch/sparc/kernel/smp_32.c

@@ -114,7 +114,7 @@ void __init smp_cpus_done(unsigned int max_cpus)
 		printk("UNKNOWN!\n");
 		BUG();
 		break;
-	};
+	}
 }
 
 void cpu_panic(void)
@@ -374,7 +374,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 		printk("UNKNOWN!\n");
 		BUG();
 		break;
-	};
+	}
 }
 
 /* Set this up early so that things like the scheduler can init
@@ -447,7 +447,7 @@ int __cpuinit __cpu_up(unsigned int cpu)
 		printk("UNKNOWN!\n");
 		BUG();
 		break;
-	};
+	}
 
 	if (!ret) {
 		cpumask_set_cpu(cpu, &smp_commenced_mask);

arch/sparc/kernel/sun4d_irq.c

@@ -103,10 +103,9 @@ static void sun4d_sbus_handler_irq(int sbusl)
 
 	sbil = (sbusl << 2);
 	/* Loop for each pending SBI */
-	for (sbino = 0; bus_mask; sbino++) {
+	for (sbino = 0; bus_mask; sbino++, bus_mask >>= 1) {
 		unsigned int idx, mask;
 
-		bus_mask >>= 1;
 		if (!(bus_mask & 1))
 			continue;
 		/* XXX This seems to ACK the irq twice.  acquire_sbi()
@@ -118,19 +117,16 @@ static void sun4d_sbus_handler_irq(int sbusl)
 		mask &= (0xf << sbil);
 
 		/* Loop for each pending SBI slot */
-		idx = 0;
 		slot = (1 << sbil);
-		while (mask != 0) {
+		for (idx = 0; mask != 0; idx++, slot <<= 1) {
 			unsigned int pil;
 			struct irq_bucket *p;
 
-			idx++;
-			slot <<= 1;
 			if (!(mask & slot))
 				continue;
 
 			mask &= ~slot;
-			pil = sun4d_encode_irq(sbino, sbil, idx);
+			pil = sun4d_encode_irq(sbino, sbusl, idx);
 
 			p = irq_map[pil];
 			while (p) {
@@ -218,10 +214,10 @@ static void sun4d_unmask_irq(struct irq_data *data)
 
 #ifdef CONFIG_SMP
 	spin_lock_irqsave(&sun4d_imsk_lock, flags);
-	cc_set_imsk_other(cpuid, cc_get_imsk_other(cpuid) | ~(1 << real_irq));
+	cc_set_imsk_other(cpuid, cc_get_imsk_other(cpuid) & ~(1 << real_irq));
 	spin_unlock_irqrestore(&sun4d_imsk_lock, flags);
 #else
-	cc_set_imsk(cc_get_imsk() | ~(1 << real_irq));
+	cc_set_imsk(cc_get_imsk() & ~(1 << real_irq));
 #endif
 }
 
@@ -299,58 +295,19 @@ static void __init sun4d_load_profile_irqs(void)
 	}
 }
 
-unsigned int sun4d_build_device_irq(struct platform_device *op,
+unsigned int _sun4d_build_device_irq(unsigned int real_irq,
-                                    unsigned int real_irq)
+                                     unsigned int pil,
+                                     unsigned int board)
 {
-	struct device_node *dp = op->dev.of_node;
-	struct device_node *io_unit, *sbi = dp->parent;
-	const struct linux_prom_registers *regs;
 	struct sun4d_handler_data *handler_data;
-	unsigned int pil;
 	unsigned int irq;
-	int board, slot;
-	int sbusl;
-
-	irq = 0;
-	while (sbi) {
-		if (!strcmp(sbi->name, "sbi"))
-			break;
-
-		sbi = sbi->parent;
-	}
-	if (!sbi)
-		goto err_out;
-
-	regs = of_get_property(dp, "reg", NULL);
-	if (!regs)
-		goto err_out;
-
-	slot = regs->which_io;
-
-	/*
-	 *  If SBI's parent is not io-unit or the io-unit lacks
-	 * a "board#" property, something is very wrong.
-	 */
-	if (!sbi->parent || strcmp(sbi->parent->name, "io-unit")) {
-		printk("%s: Error, parent is not io-unit.\n", sbi->full_name);
-		goto err_out;
-	}
-	io_unit = sbi->parent;
-	board = of_getintprop_default(io_unit, "board#", -1);
-	if (board == -1) {
-		printk("%s: Error, lacks board# property.\n", io_unit->full_name);
-		goto err_out;
-	}
-
-	sbusl = pil_to_sbus[real_irq];
-	if (sbusl)
-		pil = sun4d_encode_irq(board, sbusl, slot);
-	else
-		pil = real_irq;
 
 	irq = irq_alloc(real_irq, pil);
-	if (irq == 0)
+	if (irq == 0) {
+		prom_printf("IRQ: allocate for %d %d %d failed\n",
+			real_irq, pil, board);
 		goto err_out;
+	}
 
 	handler_data = irq_get_handler_data(irq);
 	if (unlikely(handler_data))
@@ -368,9 +325,80 @@ unsigned int sun4d_build_device_irq(struct platform_device *op,
 	irq_set_handler_data(irq, handler_data);
 
 err_out:
-	return real_irq;
+	return irq;
 }
 
+
+
+unsigned int sun4d_build_device_irq(struct platform_device *op,
+                                    unsigned int real_irq)
+{
+	struct device_node *dp = op->dev.of_node;
+	struct device_node *board_parent, *bus = dp->parent;
+	char *bus_connection;
+	const struct linux_prom_registers *regs;
+	unsigned int pil;
+	unsigned int irq;
+	int board, slot;
+	int sbusl;
+
+	irq = real_irq;
+	while (bus) {
+		if (!strcmp(bus->name, "sbi")) {
+			bus_connection = "io-unit";
+			break;
+		}
+
+		if (!strcmp(bus->name, "bootbus")) {
+			bus_connection = "cpu-unit";
+			break;
+		}
+
+		bus = bus->parent;
+	}
+	if (!bus)
+		goto err_out;
+
+	regs = of_get_property(dp, "reg", NULL);
+	if (!regs)
+		goto err_out;
+
+	slot = regs->which_io;
+
+	/*
+	 * If Bus nodes parent is not io-unit/cpu-unit or the io-unit/cpu-unit
+	 * lacks a "board#" property, something is very wrong.
+	 */
+	if (!bus->parent || strcmp(bus->parent->name, bus_connection)) {
+		printk(KERN_ERR "%s: Error, parent is not %s.\n",
+			bus->full_name, bus_connection);
+		goto err_out;
+	}
+	board_parent = bus->parent;
+	board = of_getintprop_default(board_parent, "board#", -1);
+	if (board == -1) {
+		printk(KERN_ERR "%s: Error, lacks board# property.\n",
+			board_parent->full_name);
+		goto err_out;
+	}
+
+	sbusl = pil_to_sbus[real_irq];
+	if (sbusl)
+		pil = sun4d_encode_irq(board, sbusl, slot);
+	else
+		pil = real_irq;
+
+	irq = _sun4d_build_device_irq(real_irq, pil, board);
+err_out:
+	return irq;
+}
+
+unsigned int sun4d_build_timer_irq(unsigned int board, unsigned int real_irq)
+{
+	return _sun4d_build_device_irq(real_irq, real_irq, board);
+}
+
+
 static void __init sun4d_fixup_trap_table(void)
 {
 #ifdef CONFIG_SMP
@@ -402,6 +430,7 @@ static void __init sun4d_init_timers(irq_handler_t counter_fn)
 	unsigned int irq;
 	const u32 *reg;
 	int err;
+	int board;
 
 	dp = of_find_node_by_name(NULL, "cpu-unit");
 	if (!dp) {
@@ -414,12 +443,19 @@ static void __init sun4d_init_timers(irq_handler_t counter_fn)
 	 * bootbus.
 	 */
 	reg = of_get_property(dp, "reg", NULL);
-	of_node_put(dp);
 	if (!reg) {
 		prom_printf("sun4d_init_timers: No reg property\n");
 		prom_halt();
 	}
 
+	board = of_getintprop_default(dp, "board#", -1);
+	if (board == -1) {
+		prom_printf("sun4d_init_timers: No board# property on cpu-unit\n");
+		prom_halt();
+	}
+
+	of_node_put(dp);
+
 	res.start = reg[1];
 	res.end = reg[2] - 1;
 	res.flags = reg[0] & 0xff;
@@ -434,7 +470,7 @@ static void __init sun4d_init_timers(irq_handler_t counter_fn)
 
 	master_l10_counter = &sun4d_timers->l10_cur_count;
 
-	irq = sun4d_build_device_irq(NULL, SUN4D_TIMER_IRQ);
+	irq = sun4d_build_timer_irq(board, SUN4D_TIMER_IRQ);
 	err = request_irq(irq, counter_fn, IRQF_TIMER, "timer", NULL);
 	if (err) {
 		prom_printf("sun4d_init_timers: request_irq() failed with %d\n",