struct e820entry *ei = &e820.map[i];
if (ei->type == E820_NVS)
- hibernate_nvs_register(ei->addr, ei->size);
+ suspend_nvs_register(ei->addr, ei->size);
}
return 0;
{
int error;
- error = s4_no_nvs ? 0 : hibernate_nvs_alloc();
+ error = s4_no_nvs ? 0 : suspend_nvs_alloc();
if (!error) {
acpi_target_sleep_state = ACPI_STATE_S4;
acpi_sleep_tts_switch(acpi_target_sleep_state);
int error = acpi_pm_prepare();
if (!error)
- hibernate_nvs_save();
+ suspend_nvs_save();
return error;
}
static void acpi_hibernation_finish(void)
{
- hibernate_nvs_free();
+ suspend_nvs_free();
acpi_pm_finish();
}
panic("ACPI S4 hardware signature mismatch");
}
/* Restore the NVS memory area */
- hibernate_nvs_restore();
+ suspend_nvs_restore();
}
static int acpi_pm_pre_restore(void)
if (!error) {
if (!s4_no_nvs)
- error = hibernate_nvs_alloc();
+ error = suspend_nvs_alloc();
if (!error)
acpi_target_sleep_state = ACPI_STATE_S4;
}
int error = acpi_pm_disable_gpes();
if (!error)
- hibernate_nvs_save();
+ suspend_nvs_save();
return error;
}
static inline bool system_entering_hibernation(void) { return false; }
#endif /* CONFIG_HIBERNATION */
-#ifdef CONFIG_HIBERNATION_NVS
-extern int hibernate_nvs_register(unsigned long start, unsigned long size);
-extern int hibernate_nvs_alloc(void);
-extern void hibernate_nvs_free(void);
-extern void hibernate_nvs_save(void);
-extern void hibernate_nvs_restore(void);
-#else /* CONFIG_HIBERNATION_NVS */
-static inline int hibernate_nvs_register(unsigned long a, unsigned long b)
+#ifdef CONFIG_SUSPEND_NVS
+extern int suspend_nvs_register(unsigned long start, unsigned long size);
+extern int suspend_nvs_alloc(void);
+extern void suspend_nvs_free(void);
+extern void suspend_nvs_save(void);
+extern void suspend_nvs_restore(void);
+#else /* CONFIG_SUSPEND_NVS */
+static inline int suspend_nvs_register(unsigned long a, unsigned long b)
{
return 0;
}
-static inline int hibernate_nvs_alloc(void) { return 0; }
-static inline void hibernate_nvs_free(void) {}
-static inline void hibernate_nvs_save(void) {}
-static inline void hibernate_nvs_restore(void) {}
-#endif /* CONFIG_HIBERNATION_NVS */
+static inline int suspend_nvs_alloc(void) { return 0; }
+static inline void suspend_nvs_free(void) {}
+static inline void suspend_nvs_save(void) {}
+static inline void suspend_nvs_restore(void) {}
+#endif /* CONFIG_SUSPEND_NVS */
#ifdef CONFIG_PM_SLEEP
void save_processor_state(void);
depends on PM_ADVANCED_DEBUG
default n
+config SUSPEND_NVS
+ bool
+
config SUSPEND
bool "Suspend to RAM and standby"
depends on PM && ARCH_SUSPEND_POSSIBLE
+ select SUSPEND_NVS if HAS_IOMEM
default y
---help---
Allow the system to enter sleep states in which main memory is
Turning OFF this setting is NOT recommended! If in doubt, say Y.
-config HIBERNATION_NVS
- bool
-
config HIBERNATION
bool "Hibernation (aka 'suspend to disk')"
depends on PM && SWAP && ARCH_HIBERNATION_POSSIBLE
- select HIBERNATION_NVS if HAS_IOMEM
+ select SUSPEND_NVS if HAS_IOMEM
---help---
Enable the suspend to disk (STD) functionality, which is usually
called "hibernation" in user interfaces. STD checkpoints the
obj-$(CONFIG_PM_TEST_SUSPEND) += suspend_test.o
obj-$(CONFIG_HIBERNATION) += hibernate.o snapshot.o swap.o user.o \
block_io.o
-obj-$(CONFIG_HIBERNATION_NVS) += hibernate_nvs.o
+obj-$(CONFIG_SUSPEND_NVS) += nvs.o
obj-$(CONFIG_MAGIC_SYSRQ) += poweroff.o
+++ /dev/null
-/*
- * linux/kernel/power/hibernate_nvs.c - Routines for handling NVS memory
- *
- * Copyright (C) 2008,2009 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
- *
- * This file is released under the GPLv2.
- */
-
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/suspend.h>
-
-/*
- * Platforms, like ACPI, may want us to save some memory used by them during
- * hibernation and to restore the contents of this memory during the subsequent
- * resume. The code below implements a mechanism allowing us to do that.
- */
-
-struct nvs_page {
- unsigned long phys_start;
- unsigned int size;
- void *kaddr;
- void *data;
- struct list_head node;
-};
-
-static LIST_HEAD(nvs_list);
-
-/**
- * hibernate_nvs_register - register platform NVS memory region to save
- * @start - physical address of the region
- * @size - size of the region
- *
- * The NVS region need not be page-aligned (both ends) and we arrange
- * things so that the data from page-aligned addresses in this region will
- * be copied into separate RAM pages.
- */
-int hibernate_nvs_register(unsigned long start, unsigned long size)
-{
- struct nvs_page *entry, *next;
-
- while (size > 0) {
- unsigned int nr_bytes;
-
- entry = kzalloc(sizeof(struct nvs_page), GFP_KERNEL);
- if (!entry)
- goto Error;
-
- list_add_tail(&entry->node, &nvs_list);
- entry->phys_start = start;
- nr_bytes = PAGE_SIZE - (start & ~PAGE_MASK);
- entry->size = (size < nr_bytes) ? size : nr_bytes;
-
- start += entry->size;
- size -= entry->size;
- }
- return 0;
-
- Error:
- list_for_each_entry_safe(entry, next, &nvs_list, node) {
- list_del(&entry->node);
- kfree(entry);
- }
- return -ENOMEM;
-}
-
-/**
- * hibernate_nvs_free - free data pages allocated for saving NVS regions
- */
-void hibernate_nvs_free(void)
-{
- struct nvs_page *entry;
-
- list_for_each_entry(entry, &nvs_list, node)
- if (entry->data) {
- free_page((unsigned long)entry->data);
- entry->data = NULL;
- if (entry->kaddr) {
- iounmap(entry->kaddr);
- entry->kaddr = NULL;
- }
- }
-}
-
-/**
- * hibernate_nvs_alloc - allocate memory necessary for saving NVS regions
- */
-int hibernate_nvs_alloc(void)
-{
- struct nvs_page *entry;
-
- list_for_each_entry(entry, &nvs_list, node) {
- entry->data = (void *)__get_free_page(GFP_KERNEL);
- if (!entry->data) {
- hibernate_nvs_free();
- return -ENOMEM;
- }
- }
- return 0;
-}
-
-/**
- * hibernate_nvs_save - save NVS memory regions
- */
-void hibernate_nvs_save(void)
-{
- struct nvs_page *entry;
-
- printk(KERN_INFO "PM: Saving platform NVS memory\n");
-
- list_for_each_entry(entry, &nvs_list, node)
- if (entry->data) {
- entry->kaddr = ioremap(entry->phys_start, entry->size);
- memcpy(entry->data, entry->kaddr, entry->size);
- }
-}
-
-/**
- * hibernate_nvs_restore - restore NVS memory regions
- *
- * This function is going to be called with interrupts disabled, so it
- * cannot iounmap the virtual addresses used to access the NVS region.
- */
-void hibernate_nvs_restore(void)
-{
- struct nvs_page *entry;
-
- printk(KERN_INFO "PM: Restoring platform NVS memory\n");
-
- list_for_each_entry(entry, &nvs_list, node)
- if (entry->data)
- memcpy(entry->kaddr, entry->data, entry->size);
-}
--- /dev/null
+/*
+ * linux/kernel/power/hibernate_nvs.c - Routines for handling NVS memory
+ *
+ * Copyright (C) 2008,2009 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
+ *
+ * This file is released under the GPLv2.
+ */
+
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/suspend.h>
+
+/*
+ * Platforms, like ACPI, may want us to save some memory used by them during
+ * suspend and to restore the contents of this memory during the subsequent
+ * resume. The code below implements a mechanism allowing us to do that.
+ */
+
+struct nvs_page {
+ unsigned long phys_start;
+ unsigned int size;
+ void *kaddr;
+ void *data;
+ struct list_head node;
+};
+
+static LIST_HEAD(nvs_list);
+
+/**
+ * suspend_nvs_register - register platform NVS memory region to save
+ * @start - physical address of the region
+ * @size - size of the region
+ *
+ * The NVS region need not be page-aligned (both ends) and we arrange
+ * things so that the data from page-aligned addresses in this region will
+ * be copied into separate RAM pages.
+ */
+int suspend_nvs_register(unsigned long start, unsigned long size)
+{
+ struct nvs_page *entry, *next;
+
+ while (size > 0) {
+ unsigned int nr_bytes;
+
+ entry = kzalloc(sizeof(struct nvs_page), GFP_KERNEL);
+ if (!entry)
+ goto Error;
+
+ list_add_tail(&entry->node, &nvs_list);
+ entry->phys_start = start;
+ nr_bytes = PAGE_SIZE - (start & ~PAGE_MASK);
+ entry->size = (size < nr_bytes) ? size : nr_bytes;
+
+ start += entry->size;
+ size -= entry->size;
+ }
+ return 0;
+
+ Error:
+ list_for_each_entry_safe(entry, next, &nvs_list, node) {
+ list_del(&entry->node);
+ kfree(entry);
+ }
+ return -ENOMEM;
+}
+
+/**
+ * suspend_nvs_free - free data pages allocated for saving NVS regions
+ */
+void suspend_nvs_free(void)
+{
+ struct nvs_page *entry;
+
+ list_for_each_entry(entry, &nvs_list, node)
+ if (entry->data) {
+ free_page((unsigned long)entry->data);
+ entry->data = NULL;
+ if (entry->kaddr) {
+ iounmap(entry->kaddr);
+ entry->kaddr = NULL;
+ }
+ }
+}
+
+/**
+ * suspend_nvs_alloc - allocate memory necessary for saving NVS regions
+ */
+int suspend_nvs_alloc(void)
+{
+ struct nvs_page *entry;
+
+ list_for_each_entry(entry, &nvs_list, node) {
+ entry->data = (void *)__get_free_page(GFP_KERNEL);
+ if (!entry->data) {
+ suspend_nvs_free();
+ return -ENOMEM;
+ }
+ }
+ return 0;
+}
+
+/**
+ * suspend_nvs_save - save NVS memory regions
+ */
+void suspend_nvs_save(void)
+{
+ struct nvs_page *entry;
+
+ printk(KERN_INFO "PM: Saving platform NVS memory\n");
+
+ list_for_each_entry(entry, &nvs_list, node)
+ if (entry->data) {
+ entry->kaddr = ioremap(entry->phys_start, entry->size);
+ memcpy(entry->data, entry->kaddr, entry->size);
+ }
+}
+
+/**
+ * suspend_nvs_restore - restore NVS memory regions
+ *
+ * This function is going to be called with interrupts disabled, so it
+ * cannot iounmap the virtual addresses used to access the NVS region.
+ */
+void suspend_nvs_restore(void)
+{
+ struct nvs_page *entry;
+
+ printk(KERN_INFO "PM: Restoring platform NVS memory\n");
+
+ list_for_each_entry(entry, &nvs_list, node)
+ if (entry->data)
+ memcpy(entry->kaddr, entry->data, entry->size);
+}
#include <linux/cpu.h>
#include <linux/syscalls.h>
#include <linux/gfp.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/suspend.h>
#include "power.h"
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff