Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
new file mode 100644
index 0000000..0a5d2a9
--- /dev/null
+++ b/drivers/acpi/sleep/main.c
@@ -0,0 +1,234 @@
+/*
+ * sleep.c - ACPI sleep support.
+ *
+ * Copyright (c) 2004 David Shaohua Li <shaohua.li@intel.com>
+ * Copyright (c) 2000-2003 Patrick Mochel
+ * Copyright (c) 2003 Open Source Development Lab
+ *
+ * This file is released under the GPLv2.
+ *
+ */
+
+#include <linux/delay.h>
+#include <linux/irq.h>
+#include <linux/dmi.h>
+#include <linux/device.h>
+#include <linux/suspend.h>
+#include <asm/io.h>
+#include <acpi/acpi_bus.h>
+#include <acpi/acpi_drivers.h>
+#include "sleep.h"
+
+u8 sleep_states[ACPI_S_STATE_COUNT];
+
+static struct pm_ops acpi_pm_ops;
+
+extern void do_suspend_lowlevel_s4bios(void);
+extern void do_suspend_lowlevel(void);
+
+static u32 acpi_suspend_states[] = {
+ [PM_SUSPEND_ON] = ACPI_STATE_S0,
+ [PM_SUSPEND_STANDBY] = ACPI_STATE_S1,
+ [PM_SUSPEND_MEM] = ACPI_STATE_S3,
+ [PM_SUSPEND_DISK] = ACPI_STATE_S4,
+};
+
+static int init_8259A_after_S1;
+
+/**
+ * acpi_pm_prepare - Do preliminary suspend work.
+ * @pm_state: suspend state we're entering.
+ *
+ * Make sure we support the state. If we do, and we need it, set the
+ * firmware waking vector and do arch-specific nastiness to get the
+ * wakeup code to the waking vector.
+ */
+
+static int acpi_pm_prepare(suspend_state_t pm_state)
+{
+ u32 acpi_state = acpi_suspend_states[pm_state];
+
+ if (!sleep_states[acpi_state])
+ return -EPERM;
+
+ /* do we have a wakeup address for S2 and S3? */
+ /* Here, we support only S4BIOS, those we set the wakeup address */
+ /* S4OS is only supported for now via swsusp.. */
+ if (pm_state == PM_SUSPEND_MEM || pm_state == PM_SUSPEND_DISK) {
+ if (!acpi_wakeup_address)
+ return -EFAULT;
+ acpi_set_firmware_waking_vector(
+ (acpi_physical_address) virt_to_phys(
+ (void *)acpi_wakeup_address));
+ }
+ ACPI_FLUSH_CPU_CACHE();
+ acpi_enable_wakeup_device_prep(acpi_state);
+ acpi_enter_sleep_state_prep(acpi_state);
+ return 0;
+}
+
+
+/**
+ * acpi_pm_enter - Actually enter a sleep state.
+ * @pm_state: State we're entering.
+ *
+ * Flush caches and go to sleep. For STR or STD, we have to call
+ * arch-specific assembly, which in turn call acpi_enter_sleep_state().
+ * It's unfortunate, but it works. Please fix if you're feeling frisky.
+ */
+
+static int acpi_pm_enter(suspend_state_t pm_state)
+{
+ acpi_status status = AE_OK;
+ unsigned long flags = 0;
+ u32 acpi_state = acpi_suspend_states[pm_state];
+
+ ACPI_FLUSH_CPU_CACHE();
+
+ /* Do arch specific saving of state. */
+ if (pm_state > PM_SUSPEND_STANDBY) {
+ int error = acpi_save_state_mem();
+ if (error)
+ return error;
+ }
+
+
+ local_irq_save(flags);
+ acpi_enable_wakeup_device(acpi_state);
+ switch (pm_state)
+ {
+ case PM_SUSPEND_STANDBY:
+ barrier();
+ status = acpi_enter_sleep_state(acpi_state);
+ break;
+
+ case PM_SUSPEND_MEM:
+ do_suspend_lowlevel();
+ break;
+
+ case PM_SUSPEND_DISK:
+ if (acpi_pm_ops.pm_disk_mode == PM_DISK_PLATFORM)
+ status = acpi_enter_sleep_state(acpi_state);
+ else
+ do_suspend_lowlevel_s4bios();
+ break;
+ default:
+ return -EINVAL;
+ }
+ local_irq_restore(flags);
+ printk(KERN_DEBUG "Back to C!\n");
+
+ /* restore processor state
+ * We should only be here if we're coming back from STR or STD.
+ * And, in the case of the latter, the memory image should have already
+ * been loaded from disk.
+ */
+ if (pm_state > PM_SUSPEND_STANDBY)
+ acpi_restore_state_mem();
+
+
+ return ACPI_SUCCESS(status) ? 0 : -EFAULT;
+}
+
+
+/**
+ * acpi_pm_finish - Finish up suspend sequence.
+ * @pm_state: State we're coming out of.
+ *
+ * This is called after we wake back up (or if entering the sleep state
+ * failed).
+ */
+
+static int acpi_pm_finish(suspend_state_t pm_state)
+{
+ u32 acpi_state = acpi_suspend_states[pm_state];
+
+ acpi_leave_sleep_state(acpi_state);
+ acpi_disable_wakeup_device(acpi_state);
+
+ /* reset firmware waking vector */
+ acpi_set_firmware_waking_vector((acpi_physical_address) 0);
+
+ if (init_8259A_after_S1) {
+ printk("Broken toshiba laptop -> kicking interrupts\n");
+ init_8259A(0);
+ }
+ return 0;
+}
+
+
+int acpi_suspend(u32 acpi_state)
+{
+ suspend_state_t states[] = {
+ [1] = PM_SUSPEND_STANDBY,
+ [3] = PM_SUSPEND_MEM,
+ [4] = PM_SUSPEND_DISK,
+ };
+
+ if (acpi_state <= 4 && states[acpi_state])
+ return pm_suspend(states[acpi_state]);
+ return -EINVAL;
+}
+
+static struct pm_ops acpi_pm_ops = {
+ .prepare = acpi_pm_prepare,
+ .enter = acpi_pm_enter,
+ .finish = acpi_pm_finish,
+};
+
+
+/*
+ * Toshiba fails to preserve interrupts over S1, reinitialization
+ * of 8259 is needed after S1 resume.
+ */
+static int __init init_ints_after_s1(struct dmi_system_id *d)
+{
+ printk(KERN_WARNING "%s with broken S1 detected.\n", d->ident);
+ init_8259A_after_S1 = 1;
+ return 0;
+}
+
+static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
+ {
+ .callback = init_ints_after_s1,
+ .ident = "Toshiba Satellite 4030cdt",
+ .matches = { DMI_MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"), },
+ },
+ { },
+};
+
+static int __init acpi_sleep_init(void)
+{
+ int i = 0;
+
+ dmi_check_system(acpisleep_dmi_table);
+
+ if (acpi_disabled)
+ return 0;
+
+ printk(KERN_INFO PREFIX "(supports");
+ for (i=0; i < ACPI_S_STATE_COUNT; i++) {
+ acpi_status status;
+ u8 type_a, type_b;
+ status = acpi_get_sleep_type_data(i, &type_a, &type_b);
+ if (ACPI_SUCCESS(status)) {
+ sleep_states[i] = 1;
+ printk(" S%d", i);
+ }
+ if (i == ACPI_STATE_S4) {
+ if (acpi_gbl_FACS->S4bios_f) {
+ sleep_states[i] = 1;
+ printk(" S4bios");
+ acpi_pm_ops.pm_disk_mode = PM_DISK_FIRMWARE;
+ }
+ if (sleep_states[i])
+ acpi_pm_ops.pm_disk_mode = PM_DISK_PLATFORM;
+ }
+ }
+ printk(")\n");
+
+ pm_set_ops(&acpi_pm_ops);
+ return 0;
+}
+
+late_initcall(acpi_sleep_init);