Merge branch 'linus' into release

22 files changed, 889 insertions, 148 deletions

diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index d9aac2e65391..2da1781e85c3 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -498,6 +498,18 @@ config SGI_GRU_DEBUG
 	This option enables addition debugging code for the SGI GRU driver. If
 	you are unsure, say N.
 
+config DELL_LAPTOP
+	tristate "Dell Laptop Extras (EXPERIMENTAL)"
+	depends on X86
+	depends on DCDBAS
+	depends on EXPERIMENTAL
+	depends on BACKLIGHT_CLASS_DEVICE
+	depends on RFKILL
+	default n
+	---help---
+	This driver adds support for rfkill and backlight control to Dell
+	laptops.
+
 source "drivers/misc/c2port/Kconfig"
 
 endif # MISC_DEVICES
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 817f7f5ab3bd..5de863a0e395 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -18,6 +18,7 @@ obj-$(CONFIG_ICS932S401)	+= ics932s401.o
 obj-$(CONFIG_TC1100_WMI)	+= tc1100-wmi.o
 obj-$(CONFIG_LKDTM)		+= lkdtm.o
 obj-$(CONFIG_TIFM_CORE)       	+= tifm_core.o
+obj-$(CONFIG_DELL_LAPTOP)	+= dell-laptop.o
 obj-$(CONFIG_TIFM_7XX1)       	+= tifm_7xx1.o
 obj-$(CONFIG_PHANTOM)		+= phantom.o
 obj-$(CONFIG_SGI_IOC4)		+= ioc4.o
diff --git a/drivers/misc/dell-laptop.c b/drivers/misc/dell-laptop.c
new file mode 100644
index 000000000000..4d33a2068b7a
--- /dev/null
+++ b/drivers/misc/dell-laptop.c
@@ -0,0 +1,436 @@
+/*
+ *  Driver for Dell laptop extras
+ *
+ *  Copyright (c) Red Hat <mjg@redhat.com>
+ *
+ *  Based on documentation in the libsmbios package, Copyright (C) 2005 Dell
+ *  Inc.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/backlight.h>
+#include <linux/err.h>
+#include <linux/dmi.h>
+#include <linux/io.h>
+#include <linux/rfkill.h>
+#include <linux/power_supply.h>
+#include <linux/acpi.h>
+#include "../firmware/dcdbas.h"
+
+#define BRIGHTNESS_TOKEN 0x7d
+
+/* This structure will be modified by the firmware when we enter
+ * system management mode, hence the volatiles */
+
+struct calling_interface_buffer {
+	u16 class;
+	u16 select;
+	volatile u32 input[4];
+	volatile u32 output[4];
+} __packed;
+
+struct calling_interface_token {
+	u16 tokenID;
+	u16 location;
+	union {
+		u16 value;
+		u16 stringlength;
+	};
+};
+
+struct calling_interface_structure {
+	struct dmi_header header;
+	u16 cmdIOAddress;
+	u8 cmdIOCode;
+	u32 supportedCmds;
+	struct calling_interface_token tokens[];
+} __packed;
+
+static int da_command_address;
+static int da_command_code;
+static int da_num_tokens;
+static struct calling_interface_token *da_tokens;
+
+static struct backlight_device *dell_backlight_device;
+static struct rfkill *wifi_rfkill;
+static struct rfkill *bluetooth_rfkill;
+static struct rfkill *wwan_rfkill;
+
+static const struct dmi_system_id __initdata dell_device_table[] = {
+	{
+		.ident = "Dell laptop",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_CHASSIS_TYPE, "8"),
+		},
+	},
+	{ }
+};
+
+static void parse_da_table(const struct dmi_header *dm)
+{
+	/* Final token is a terminator, so we don't want to copy it */
+	int tokens = (dm->length-11)/sizeof(struct calling_interface_token)-1;
+	struct calling_interface_structure *table =
+		container_of(dm, struct calling_interface_structure, header);
+
+	/* 4 bytes of table header, plus 7 bytes of Dell header, plus at least
+	   6 bytes of entry */
+
+	if (dm->length < 17)
+		return;
+
+	da_command_address = table->cmdIOAddress;
+	da_command_code = table->cmdIOCode;
+
+	da_tokens = krealloc(da_tokens, (da_num_tokens + tokens) *
+			     sizeof(struct calling_interface_token),
+			     GFP_KERNEL);
+
+	if (!da_tokens)
+		return;
+
+	memcpy(da_tokens+da_num_tokens, table->tokens,
+	       sizeof(struct calling_interface_token) * tokens);
+
+	da_num_tokens += tokens;
+}
+
+static void find_tokens(const struct dmi_header *dm)
+{
+	switch (dm->type) {
+	case 0xd4: /* Indexed IO */
+		break;
+	case 0xd5: /* Protected Area Type 1 */
+		break;
+	case 0xd6: /* Protected Area Type 2 */
+		break;
+	case 0xda: /* Calling interface */
+		parse_da_table(dm);
+		break;
+	}
+}
+
+static int find_token_location(int tokenid)
+{
+	int i;
+	for (i = 0; i < da_num_tokens; i++) {
+		if (da_tokens[i].tokenID == tokenid)
+			return da_tokens[i].location;
+	}
+
+	return -1;
+}
+
+static struct calling_interface_buffer *
+dell_send_request(struct calling_interface_buffer *buffer, int class,
+		  int select)
+{
+	struct smi_cmd command;
+
+	command.magic = SMI_CMD_MAGIC;
+	command.command_address = da_command_address;
+	command.command_code = da_command_code;
+	command.ebx = virt_to_phys(buffer);
+	command.ecx = 0x42534931;
+
+	buffer->class = class;
+	buffer->select = select;
+
+	dcdbas_smi_request(&command);
+
+	return buffer;
+}
+
+/* Derived from information in DellWirelessCtl.cpp:
+   Class 17, select 11 is radio control. It returns an array of 32-bit values.
+
+   result[0]: return code
+   result[1]:
+     Bit 0:      Hardware switch supported
+     Bit 1:      Wifi locator supported
+     Bit 2:      Wifi is supported
+     Bit 3:      Bluetooth is supported
+     Bit 4:      WWAN is supported
+     Bit 5:      Wireless keyboard supported
+     Bits 6-7:   Reserved
+     Bit 8:      Wifi is installed
+     Bit 9:      Bluetooth is installed
+     Bit 10:     WWAN is installed
+     Bits 11-15: Reserved
+     Bit 16:     Hardware switch is on
+     Bit 17:     Wifi is blocked
+     Bit 18:     Bluetooth is blocked
+     Bit 19:     WWAN is blocked
+     Bits 20-31: Reserved
+   result[2]: NVRAM size in bytes
+   result[3]: NVRAM format version number
+*/
+
+static int dell_rfkill_set(int radio, enum rfkill_state state)
+{
+	struct calling_interface_buffer buffer;
+	int disable = (state == RFKILL_STATE_UNBLOCKED) ? 0 : 1;
+
+	memset(&buffer, 0, sizeof(struct calling_interface_buffer));
+	buffer.input[0] = (1 | (radio<<8) | (disable << 16));
+	dell_send_request(&buffer, 17, 11);
+
+	return 0;
+}
+
+static int dell_wifi_set(void *data, enum rfkill_state state)
+{
+	return dell_rfkill_set(1, state);
+}
+
+static int dell_bluetooth_set(void *data, enum rfkill_state state)
+{
+	return dell_rfkill_set(2, state);
+}
+
+static int dell_wwan_set(void *data, enum rfkill_state state)
+{
+	return dell_rfkill_set(3, state);
+}
+
+static int dell_rfkill_get(int bit, enum rfkill_state *state)
+{
+	struct calling_interface_buffer buffer;
+	int status;
+	int new_state = RFKILL_STATE_HARD_BLOCKED;
+
+	memset(&buffer, 0, sizeof(struct calling_interface_buffer));
+	dell_send_request(&buffer, 17, 11);
+	status = buffer.output[1];
+
+	if (status & (1<<16))
+		new_state = RFKILL_STATE_SOFT_BLOCKED;
+
+	if (status & (1<<bit))
+		*state = new_state;
+	else
+		*state = RFKILL_STATE_UNBLOCKED;
+
+	return 0;
+}
+
+static int dell_wifi_get(void *data, enum rfkill_state *state)
+{
+	return dell_rfkill_get(17, state);
+}
+
+static int dell_bluetooth_get(void *data, enum rfkill_state *state)
+{
+	return dell_rfkill_get(18, state);
+}
+
+static int dell_wwan_get(void *data, enum rfkill_state *state)
+{
+	return dell_rfkill_get(19, state);
+}
+
+static int dell_setup_rfkill(void)
+{
+	struct calling_interface_buffer buffer;
+	int status;
+	int ret;
+
+	memset(&buffer, 0, sizeof(struct calling_interface_buffer));
+	dell_send_request(&buffer, 17, 11);
+	status = buffer.output[1];
+
+	if ((status & (1<<2|1<<8)) == (1<<2|1<<8)) {
+		wifi_rfkill = rfkill_allocate(NULL, RFKILL_TYPE_WLAN);
+		if (!wifi_rfkill)
+			goto err_wifi;
+		wifi_rfkill->name = "dell-wifi";
+		wifi_rfkill->toggle_radio = dell_wifi_set;
+		wifi_rfkill->get_state = dell_wifi_get;
+		ret = rfkill_register(wifi_rfkill);
+		if (ret)
+			goto err_wifi;
+	}
+
+	if ((status & (1<<3|1<<9)) == (1<<3|1<<9)) {
+		bluetooth_rfkill = rfkill_allocate(NULL, RFKILL_TYPE_BLUETOOTH);
+		if (!bluetooth_rfkill)
+			goto err_bluetooth;
+		bluetooth_rfkill->name = "dell-bluetooth";
+		bluetooth_rfkill->toggle_radio = dell_bluetooth_set;
+		bluetooth_rfkill->get_state = dell_bluetooth_get;
+		ret = rfkill_register(bluetooth_rfkill);
+		if (ret)
+			goto err_bluetooth;
+	}
+
+	if ((status & (1<<4|1<<10)) == (1<<4|1<<10)) {
+		wwan_rfkill = rfkill_allocate(NULL, RFKILL_TYPE_WWAN);
+		if (!wwan_rfkill)
+			goto err_wwan;
+		wwan_rfkill->name = "dell-wwan";
+		wwan_rfkill->toggle_radio = dell_wwan_set;
+		wwan_rfkill->get_state = dell_wwan_get;
+		ret = rfkill_register(wwan_rfkill);
+		if (ret)
+			goto err_wwan;
+	}
+
+	return 0;
+err_wwan:
+	if (wwan_rfkill)
+		rfkill_free(wwan_rfkill);
+	if (bluetooth_rfkill) {
+		rfkill_unregister(bluetooth_rfkill);
+		bluetooth_rfkill = NULL;
+	}
+err_bluetooth:
+	if (bluetooth_rfkill)
+		rfkill_free(bluetooth_rfkill);
+	if (wifi_rfkill) {
+		rfkill_unregister(wifi_rfkill);
+		wifi_rfkill = NULL;
+	}
+err_wifi:
+	if (wifi_rfkill)
+		rfkill_free(wifi_rfkill);
+
+	return ret;
+}
+
+static int dell_send_intensity(struct backlight_device *bd)
+{
+	struct calling_interface_buffer buffer;
+
+	memset(&buffer, 0, sizeof(struct calling_interface_buffer));
+	buffer.input[0] = find_token_location(BRIGHTNESS_TOKEN);
+	buffer.input[1] = bd->props.brightness;
+
+	if (buffer.input[0] == -1)
+		return -ENODEV;
+
+	if (power_supply_is_system_supplied() > 0)
+		dell_send_request(&buffer, 1, 2);
+	else
+		dell_send_request(&buffer, 1, 1);
+
+	return 0;
+}
+
+static int dell_get_intensity(struct backlight_device *bd)
+{
+	struct calling_interface_buffer buffer;
+
+	memset(&buffer, 0, sizeof(struct calling_interface_buffer));
+	buffer.input[0] = find_token_location(BRIGHTNESS_TOKEN);
+
+	if (buffer.input[0] == -1)
+		return -ENODEV;
+
+	if (power_supply_is_system_supplied() > 0)
+		dell_send_request(&buffer, 0, 2);
+	else
+		dell_send_request(&buffer, 0, 1);
+
+	return buffer.output[1];
+}
+
+static struct backlight_ops dell_ops = {
+	.get_brightness = dell_get_intensity,
+	.update_status  = dell_send_intensity,
+};
+
+static int __init dell_init(void)
+{
+	struct calling_interface_buffer buffer;
+	int max_intensity = 0;
+	int ret;
+
+	if (!dmi_check_system(dell_device_table))
+		return -ENODEV;
+
+	dmi_walk(find_tokens);
+
+	if (!da_tokens)  {
+		printk(KERN_INFO "dell-laptop: Unable to find dmi tokens\n");
+		return -ENODEV;
+	}
+
+	ret = dell_setup_rfkill();
+
+	if (ret) {
+		printk(KERN_WARNING "dell-laptop: Unable to setup rfkill\n");
+		goto out;
+	}
+
+#ifdef CONFIG_ACPI
+	/* In the event of an ACPI backlight being available, don't
+	 * register the platform controller.
+	 */
+	if (acpi_video_backlight_support())
+		return 0;
+#endif
+
+	memset(&buffer, 0, sizeof(struct calling_interface_buffer));
+	buffer.input[0] = find_token_location(BRIGHTNESS_TOKEN);
+
+	if (buffer.input[0] != -1) {
+		dell_send_request(&buffer, 0, 2);
+		max_intensity = buffer.output[3];
+	}
+
+	if (max_intensity) {
+		dell_backlight_device = backlight_device_register(
+			"dell_backlight",
+			NULL, NULL,
+			&dell_ops);
+
+		if (IS_ERR(dell_backlight_device)) {
+			ret = PTR_ERR(dell_backlight_device);
+			dell_backlight_device = NULL;
+			goto out;
+		}
+
+		dell_backlight_device->props.max_brightness = max_intensity;
+		dell_backlight_device->props.brightness =
+			dell_get_intensity(dell_backlight_device);
+		backlight_update_status(dell_backlight_device);
+	}
+
+	return 0;
+out:
+	if (wifi_rfkill)
+		rfkill_unregister(wifi_rfkill);
+	if (bluetooth_rfkill)
+		rfkill_unregister(bluetooth_rfkill);
+	if (wwan_rfkill)
+		rfkill_unregister(wwan_rfkill);
+	kfree(da_tokens);
+	return ret;
+}
+
+static void __exit dell_exit(void)
+{
+	backlight_device_unregister(dell_backlight_device);
+	if (wifi_rfkill)
+		rfkill_unregister(wifi_rfkill);
+	if (bluetooth_rfkill)
+		rfkill_unregister(bluetooth_rfkill);
+	if (wwan_rfkill)
+		rfkill_unregister(wwan_rfkill);
+}
+
+module_init(dell_init);
+module_exit(dell_exit);
+
+MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
+MODULE_DESCRIPTION("Dell laptop driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("dmi:*svnDellInc.:*:ct8:*");
diff --git a/drivers/misc/enclosure.c b/drivers/misc/enclosure.c
index 0736cff9d97a..3cf61ece71d7 100644
--- a/drivers/misc/enclosure.c
+++ b/drivers/misc/enclosure.c
@@ -119,7 +119,7 @@ enclosure_register(struct device *dev, const char *name, int components,
 	edev->edev.class = &enclosure_class;
 	edev->edev.parent = get_device(dev);
 	edev->cb = cb;
-	snprintf(edev->edev.bus_id, BUS_ID_SIZE, "%s", name);
+	dev_set_name(&edev->edev, name);
 	err = device_register(&edev->edev);
 	if (err)
 		goto err;
@@ -170,7 +170,7 @@ EXPORT_SYMBOL_GPL(enclosure_unregister);
 static void enclosure_link_name(struct enclosure_component *cdev, char *name)
 {
 	strcpy(name, "enclosure_device:");
-	strcat(name, cdev->cdev.bus_id);
+	strcat(name, dev_name(&cdev->cdev));
 }
 
 static void enclosure_remove_links(struct enclosure_component *cdev)
@@ -256,9 +256,9 @@ enclosure_component_register(struct enclosure_device *edev,
 	cdev = &ecomp->cdev;
 	cdev->parent = get_device(&edev->edev);
 	if (name)
-		snprintf(cdev->bus_id, BUS_ID_SIZE, "%s", name);
+		dev_set_name(cdev, name);
 	else
-		snprintf(cdev->bus_id, BUS_ID_SIZE, "%u", number);
+		dev_set_name(cdev, "%u", number);
 
 	cdev->release = enclosure_component_release;
 	cdev->groups = enclosure_groups;
diff --git a/drivers/misc/ibmasm/event.c b/drivers/misc/ibmasm/event.c
index fda6a4d3bf23..68a0a5b94795 100644
--- a/drivers/misc/ibmasm/event.c
+++ b/drivers/misc/ibmasm/event.c
@@ -50,7 +50,7 @@ static void wake_up_event_readers(struct service_processor *sp)
  * Store the event in the circular event buffer, wake up any sleeping
  * event readers.
  * There is no reader marker in the buffer, therefore readers are
- * responsible for keeping up with the writer, or they will loose events.
+ * responsible for keeping up with the writer, or they will lose events.
  */
 void ibmasm_receive_event(struct service_processor *sp, void *data, unsigned int data_size)
 {
diff --git a/drivers/misc/ibmasm/ibmasmfs.c b/drivers/misc/ibmasm/ibmasmfs.c
index 22a7e8ba211d..de966a6fb7e6 100644
--- a/drivers/misc/ibmasm/ibmasmfs.c
+++ b/drivers/misc/ibmasm/ibmasmfs.c
@@ -146,8 +146,6 @@ static struct inode *ibmasmfs_make_inode(struct super_block *sb, int mode)
 
 	if (ret) {
 		ret->i_mode = mode;
-		ret->i_uid = ret->i_gid = 0;
-		ret->i_blocks = 0;
 		ret->i_atime = ret->i_mtime = ret->i_ctime = CURRENT_TIME;
 	}
 	return ret;
diff --git a/drivers/misc/ibmasm/module.c b/drivers/misc/ibmasm/module.c
index b5f6add34b0b..dc14b0b9cbfa 100644
--- a/drivers/misc/ibmasm/module.c
+++ b/drivers/misc/ibmasm/module.c
@@ -104,8 +104,7 @@ static int __devinit ibmasm_init_one(struct pci_dev *pdev, const struct pci_devi
 	}
 
 	sp->irq = pdev->irq;
-	sp->base_address = ioremap(pci_resource_start(pdev, 0),
-					pci_resource_len(pdev, 0));
+	sp->base_address = pci_ioremap_bar(pdev, 0);
 	if (!sp->base_address) {
 		dev_err(sp->dev, "Failed to ioremap pci memory\n");
 		result =  -ENODEV;
diff --git a/drivers/misc/ioc4.c b/drivers/misc/ioc4.c
index 6f76573e7c8a..60b0b1a4fb3a 100644
--- a/drivers/misc/ioc4.c
+++ b/drivers/misc/ioc4.c
@@ -269,6 +269,16 @@ ioc4_variant(struct ioc4_driver_data *idd)
 	return IOC4_VARIANT_PCI_RT;
 }
 
+static void
+ioc4_load_modules(struct work_struct *work)
+{
+	/* arg just has to be freed */
+
+	request_module("sgiioc4");
+
+	kfree(work);
+}
+
 /* Adds a new instance of an IOC4 card */
 static int
 ioc4_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
@@ -378,6 +388,30 @@ ioc4_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
 	}
 	mutex_unlock(&ioc4_mutex);
 
+	/* Request sgiioc4 IDE driver on boards that bring that functionality
+	 * off of IOC4.  The root filesystem may be hosted on a drive connected
+	 * to IOC4, so we need to make sure the sgiioc4 driver is loaded as it
+	 * won't be picked up by modprobes due to the ioc4 module owning the
+	 * PCI device.
+	 */
+	if (idd->idd_variant != IOC4_VARIANT_PCI_RT) {
+		struct work_struct *work;
+		work = kzalloc(sizeof(struct work_struct), GFP_KERNEL);
+		if (!work) {
+			printk(KERN_WARNING
+			       "%s: IOC4 unable to allocate memory for "
+			       "load of sub-modules.\n", __func__);
+		} else {
+			/* Request the module from a work procedure as the
+			 * modprobe goes out to a userland helper and that
+			 * will hang if done directly from ioc4_probe().
+			 */
+			printk(KERN_INFO "IOC4 loading sgiioc4 submodule\n");
+			INIT_WORK(work, ioc4_load_modules);
+			schedule_work(work);
+		}
+	}
+
 	return 0;
 
 out_misc_region:
@@ -462,6 +496,8 @@ ioc4_init(void)
 static void __devexit
 ioc4_exit(void)
 {
+	/* Ensure ioc4_load_modules() has completed before exiting */
+	flush_scheduled_work();
 	pci_unregister_driver(&ioc4_driver);
 }
 
diff --git a/drivers/misc/phantom.c b/drivers/misc/phantom.c
index abdebe347383..fa57b67593ae 100644
--- a/drivers/misc/phantom.c
+++ b/drivers/misc/phantom.c
@@ -6,7 +6,7 @@
  *  the Free Software Foundation; either version 2 of the License, or
  *  (at your option) any later version.
  *
- *  You need an userspace library to cooperate with this driver. It (and other
+ *  You need a userspace library to cooperate with this driver. It (and other
  *  info) may be obtained here:
  *  http://www.fi.muni.cz/~xslaby/phantom.html
  *  or alternatively, you might use OpenHaptics provided by Sensable.
diff --git a/drivers/misc/sgi-gru/grumain.c b/drivers/misc/sgi-gru/grumain.c
index e11e1ac50900..3d2fc216bae5 100644
--- a/drivers/misc/sgi-gru/grumain.c
+++ b/drivers/misc/sgi-gru/grumain.c
@@ -29,7 +29,7 @@ static struct device_driver gru_driver = {
 };
 
 static struct device gru_device = {
-	.bus_id = {0},
+	.init_name = "",
 	.driver = &gru_driver,
 };
 
diff --git a/drivers/misc/sgi-gru/gruprocfs.c b/drivers/misc/sgi-gru/gruprocfs.c
index 533923f83f1a..73b0ca061bb5 100644
--- a/drivers/misc/sgi-gru/gruprocfs.c
+++ b/drivers/misc/sgi-gru/gruprocfs.c
@@ -317,7 +317,6 @@ int gru_proc_init(void)
 {
 	struct proc_entry *p;
 
-	proc_mkdir("sgi_uv", NULL);
 	proc_gru = proc_mkdir("sgi_uv/gru", NULL);
 
 	for (p = proc_files; p->name; p++)
diff --git a/drivers/misc/sgi-xp/xp.h b/drivers/misc/sgi-xp/xp.h
index ed1722e50049..7b4cbd5e03e9 100644
--- a/drivers/misc/sgi-xp/xp.h
+++ b/drivers/misc/sgi-xp/xp.h
@@ -194,9 +194,10 @@ enum xp_retval {
 	xpGruSendMqError,	/* 59: gru send message queue related error */
 
 	xpBadChannelNumber,	/* 60: invalid channel number */
-	xpBadMsgType,		/* 60: invalid message type */
+	xpBadMsgType,		/* 61: invalid message type */
+	xpBiosError,		/* 62: BIOS error */
 
-	xpUnknownReason		/* 61: unknown reason - must be last in enum */
+	xpUnknownReason		/* 63: unknown reason - must be last in enum */
 };
 
 /*
@@ -345,6 +346,8 @@ extern unsigned long (*xp_pa) (void *);
 extern enum xp_retval (*xp_remote_memcpy) (unsigned long, const unsigned long,
 		       size_t);
 extern int (*xp_cpu_to_nasid) (int);
+extern enum xp_retval (*xp_expand_memprotect) (unsigned long, unsigned long);
+extern enum xp_retval (*xp_restrict_memprotect) (unsigned long, unsigned long);
 
 extern u64 xp_nofault_PIOR_target;
 extern int xp_nofault_PIOR(void *);
diff --git a/drivers/misc/sgi-xp/xp_main.c b/drivers/misc/sgi-xp/xp_main.c
index 66a1d19e08ad..16f8dcab2da4 100644
--- a/drivers/misc/sgi-xp/xp_main.c
+++ b/drivers/misc/sgi-xp/xp_main.c
@@ -25,7 +25,7 @@ struct device_driver xp_dbg_name = {
 };
 
 struct device xp_dbg_subname = {
-	.bus_id = {0},		/* set to "" */
+	.init_name = "",		/* set to "" */
 	.driver = &xp_dbg_name
 };
 
@@ -51,6 +51,13 @@ EXPORT_SYMBOL_GPL(xp_remote_memcpy);
 int (*xp_cpu_to_nasid) (int cpuid);
 EXPORT_SYMBOL_GPL(xp_cpu_to_nasid);
 
+enum xp_retval (*xp_expand_memprotect) (unsigned long phys_addr,
+					unsigned long size);
+EXPORT_SYMBOL_GPL(xp_expand_memprotect);
+enum xp_retval (*xp_restrict_memprotect) (unsigned long phys_addr,
+					  unsigned long size);
+EXPORT_SYMBOL_GPL(xp_restrict_memprotect);
+
 /*
  * xpc_registrations[] keeps track of xpc_connect()'s done by the kernel-level
  * users of XPC.
diff --git a/drivers/misc/sgi-xp/xp_sn2.c b/drivers/misc/sgi-xp/xp_sn2.c
index 1440134caf31..fb3ec9d735a9 100644
--- a/drivers/misc/sgi-xp/xp_sn2.c
+++ b/drivers/misc/sgi-xp/xp_sn2.c
@@ -120,6 +120,38 @@ xp_cpu_to_nasid_sn2(int cpuid)
 	return cpuid_to_nasid(cpuid);
 }
 
+static enum xp_retval
+xp_expand_memprotect_sn2(unsigned long phys_addr, unsigned long size)
+{
+	u64 nasid_array = 0;
+	int ret;
+
+	ret = sn_change_memprotect(phys_addr, size, SN_MEMPROT_ACCESS_CLASS_1,
+				   &nasid_array);
+	if (ret != 0) {
+		dev_err(xp, "sn_change_memprotect(,, "
+			"SN_MEMPROT_ACCESS_CLASS_1,) failed ret=%d\n", ret);
+		return xpSalError;
+	}
+	return xpSuccess;
+}
+
+static enum xp_retval
+xp_restrict_memprotect_sn2(unsigned long phys_addr, unsigned long size)
+{
+	u64 nasid_array = 0;
+	int ret;
+
+	ret = sn_change_memprotect(phys_addr, size, SN_MEMPROT_ACCESS_CLASS_0,
+				   &nasid_array);
+	if (ret != 0) {
+		dev_err(xp, "sn_change_memprotect(,, "
+			"SN_MEMPROT_ACCESS_CLASS_0,) failed ret=%d\n", ret);
+		return xpSalError;
+	}
+	return xpSuccess;
+}
+
 enum xp_retval
 xp_init_sn2(void)
 {
@@ -132,6 +164,8 @@ xp_init_sn2(void)
 	xp_pa = xp_pa_sn2;
 	xp_remote_memcpy = xp_remote_memcpy_sn2;
 	xp_cpu_to_nasid = xp_cpu_to_nasid_sn2;
+	xp_expand_memprotect = xp_expand_memprotect_sn2;
+	xp_restrict_memprotect = xp_restrict_memprotect_sn2;
 
 	return xp_register_nofault_code_sn2();
 }
diff --git a/drivers/misc/sgi-xp/xp_uv.c b/drivers/misc/sgi-xp/xp_uv.c
index d9f7ce2510bc..d238576b26fa 100644
--- a/drivers/misc/sgi-xp/xp_uv.c
+++ b/drivers/misc/sgi-xp/xp_uv.c
@@ -15,6 +15,11 @@
 
 #include <linux/device.h>
 #include <asm/uv/uv_hub.h>
+#if defined CONFIG_X86_64
+#include <asm/uv/bios.h>
+#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
+#include <asm/sn/sn_sal.h>
+#endif
 #include "../sgi-gru/grukservices.h"
 #include "xp.h"
 
@@ -49,18 +54,79 @@ xp_cpu_to_nasid_uv(int cpuid)
 	return UV_PNODE_TO_NASID(uv_cpu_to_pnode(cpuid));
 }
 
+static enum xp_retval
+xp_expand_memprotect_uv(unsigned long phys_addr, unsigned long size)
+{
+	int ret;
+
+#if defined CONFIG_X86_64
+	ret = uv_bios_change_memprotect(phys_addr, size, UV_MEMPROT_ALLOW_RW);
+	if (ret != BIOS_STATUS_SUCCESS) {
+		dev_err(xp, "uv_bios_change_memprotect(,, "
+			"UV_MEMPROT_ALLOW_RW) failed, ret=%d\n", ret);
+		return xpBiosError;
+	}
+
+#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
+	u64 nasid_array;
+
+	ret = sn_change_memprotect(phys_addr, size, SN_MEMPROT_ACCESS_CLASS_1,
+				   &nasid_array);
+	if (ret != 0) {
+		dev_err(xp, "sn_change_memprotect(,, "
+			"SN_MEMPROT_ACCESS_CLASS_1,) failed ret=%d\n", ret);
+		return xpSalError;
+	}
+#else
+	#error not a supported configuration
+#endif
+	return xpSuccess;
+}
+
+static enum xp_retval
+xp_restrict_memprotect_uv(unsigned long phys_addr, unsigned long size)
+{
+	int ret;
+
+#if defined CONFIG_X86_64
+	ret = uv_bios_change_memprotect(phys_addr, size,
+					UV_MEMPROT_RESTRICT_ACCESS);
+	if (ret != BIOS_STATUS_SUCCESS) {
+		dev_err(xp, "uv_bios_change_memprotect(,, "
+			"UV_MEMPROT_RESTRICT_ACCESS) failed, ret=%d\n", ret);
+		return xpBiosError;
+	}
+
+#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
+	u64 nasid_array;
+
+	ret = sn_change_memprotect(phys_addr, size, SN_MEMPROT_ACCESS_CLASS_0,
+				   &nasid_array);
+	if (ret != 0) {
+		dev_err(xp, "sn_change_memprotect(,, "
+			"SN_MEMPROT_ACCESS_CLASS_0,) failed ret=%d\n", ret);
+		return xpSalError;
+	}
+#else
+	#error not a supported configuration
+#endif
+	return xpSuccess;
+}
+
 enum xp_retval
 xp_init_uv(void)
 {
 	BUG_ON(!is_uv());
 
 	xp_max_npartitions = XP_MAX_NPARTITIONS_UV;
-	xp_partition_id = 0;	/* !!! not correct value */
-	xp_region_size = 0;	/* !!! not correct value */
+	xp_partition_id = sn_partition_id;
+	xp_region_size = sn_region_size;
 
 	xp_pa = xp_pa_uv;
 	xp_remote_memcpy = xp_remote_memcpy_uv;
 	xp_cpu_to_nasid = xp_cpu_to_nasid_uv;
+	xp_expand_memprotect = xp_expand_memprotect_uv;
+	xp_restrict_memprotect = xp_restrict_memprotect_uv;
 
 	return xpSuccess;
 }
diff --git a/drivers/misc/sgi-xp/xpc.h b/drivers/misc/sgi-xp/xpc.h
index 619208d61862..a5bd658c2e83 100644
--- a/drivers/misc/sgi-xp/xpc.h
+++ b/drivers/misc/sgi-xp/xpc.h
@@ -181,6 +181,18 @@ struct xpc_vars_part_sn2 {
 				  xpc_nasid_mask_nlongs))
 
 /*
+ * Info pertinent to a GRU message queue using a watch list for irq generation.
+ */
+struct xpc_gru_mq_uv {
+	void *address;		/* address of GRU message queue */
+	unsigned int order;	/* size of GRU message queue as a power of 2 */
+	int irq;		/* irq raised when message is received in mq */
+	int mmr_blade;		/* blade where watchlist was allocated from */
+	unsigned long mmr_offset; /* offset of irq mmr located on mmr_blade */
+	int watchlist_num;	/* number of watchlist allocatd by BIOS */
+};
+
+/*
  * The activate_mq is used to send/receive GRU messages that affect XPC's
  * heartbeat, partition active state, and channel state. This is UV only.
  */
diff --git a/drivers/misc/sgi-xp/xpc_main.c b/drivers/misc/sgi-xp/xpc_main.c
index e8d5cfbd32c2..89218f7cfaa7 100644
--- a/drivers/misc/sgi-xp/xpc_main.c
+++ b/drivers/misc/sgi-xp/xpc_main.c
@@ -59,12 +59,12 @@ struct device_driver xpc_dbg_name = {
 };
 
 struct device xpc_part_dbg_subname = {
-	.bus_id = {0},		/* set to "part" at xpc_init() time */
+	.init_name = "",	/* set to "part" at xpc_init() time */
 	.driver = &xpc_dbg_name
 };
 
 struct device xpc_chan_dbg_subname = {
-	.bus_id = {0},		/* set to "chan" at xpc_init() time */
+	.init_name = "",	/* set to "chan" at xpc_init() time */
 	.driver = &xpc_dbg_name
 };
 
@@ -1258,8 +1258,8 @@ xpc_init(void)
 	int ret;
 	struct task_struct *kthread;
 
-	snprintf(xpc_part->bus_id, BUS_ID_SIZE, "part");
-	snprintf(xpc_chan->bus_id, BUS_ID_SIZE, "chan");
+	dev_set_name(xpc_part, "part");
+	dev_set_name(xpc_chan, "chan");
 
 	if (is_shub()) {
 		/*
diff --git a/drivers/misc/sgi-xp/xpc_sn2.c b/drivers/misc/sgi-xp/xpc_sn2.c
index b4882ccf6344..73b7fb8de47a 100644
--- a/drivers/misc/sgi-xp/xpc_sn2.c
+++ b/drivers/misc/sgi-xp/xpc_sn2.c
@@ -553,22 +553,17 @@ static u64 xpc_prot_vec_sn2[MAX_NUMNODES];
 static enum xp_retval
 xpc_allow_amo_ops_sn2(struct amo *amos_page)
 {
-	u64 nasid_array = 0;
-	int ret;
+	enum xp_retval ret = xpSuccess;
 
 	/*
 	 * On SHUB 1.1, we cannot call sn_change_memprotect() since the BIST
 	 * collides with memory operations. On those systems we call
 	 * xpc_allow_amo_ops_shub_wars_1_1_sn2() instead.
 	 */
-	if (!enable_shub_wars_1_1()) {
-		ret = sn_change_memprotect(ia64_tpa((u64)amos_page), PAGE_SIZE,
-					   SN_MEMPROT_ACCESS_CLASS_1,
-					   &nasid_array);
-		if (ret != 0)
-			return xpSalError;
-	}
-	return xpSuc