Commit e840dfe3 authored by Len Brown's avatar Len Brown

Merge branch 'stable/for-x86-for-3.4' of...

Merge branch 'stable/for-x86-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen into tboot
parents c16fa4f2 a1f37788
......@@ -272,7 +272,7 @@ static void tboot_copy_fadt(const struct acpi_table_fadt *fadt)
offsetof(struct acpi_table_facs, firmware_waking_vector);
}
void tboot_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control)
static int tboot_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control)
{
static u32 acpi_shutdown_map[ACPI_S_STATE_COUNT] = {
/* S0,1,2: */ -1, -1, -1,
......@@ -281,7 +281,7 @@ void tboot_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control)
/* S5: */ TB_SHUTDOWN_S5 };
if (!tboot_enabled())
return;
return 0;
tboot_copy_fadt(&acpi_gbl_FADT);
tboot->acpi_sinfo.pm1a_cnt_val = pm1a_control;
......@@ -292,10 +292,11 @@ void tboot_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control)
if (sleep_state >= ACPI_S_STATE_COUNT ||
acpi_shutdown_map[sleep_state] == -1) {
pr_warning("unsupported sleep state 0x%x\n", sleep_state);
return;
return -1;
}
tboot_shutdown(acpi_shutdown_map[sleep_state]);
return 0;
}
static atomic_t ap_wfs_count;
......@@ -345,6 +346,8 @@ static __init int tboot_late_init(void)
atomic_set(&ap_wfs_count, 0);
register_hotcpu_notifier(&tboot_cpu_notifier);
acpi_os_set_prepare_sleep(&tboot_sleep);
return 0;
}
......
......@@ -43,9 +43,9 @@
*/
#include <acpi/acpi.h>
#include <linux/acpi.h>
#include "accommon.h"
#include "actables.h"
#include <linux/tboot.h>
#include <linux/module.h>
#define _COMPONENT ACPI_HARDWARE
......@@ -344,8 +344,12 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state)
ACPI_FLUSH_CPU_CACHE();
tboot_sleep(sleep_state, pm1a_control, pm1b_control);
status = acpi_os_prepare_sleep(sleep_state, pm1a_control,
pm1b_control);
if (ACPI_SKIP(status))
return_ACPI_STATUS(AE_OK);
if (ACPI_FAILURE(status))
return_ACPI_STATUS(status);
/* Write #2: Write both SLP_TYP + SLP_EN */
status = acpi_hw_write_pm1_control(pm1a_control, pm1b_control);
......
......@@ -77,6 +77,9 @@ EXPORT_SYMBOL(acpi_in_debugger);
extern char line_buf[80];
#endif /*ENABLE_DEBUGGER */
static int (*__acpi_os_prepare_sleep)(u8 sleep_state, u32 pm1a_ctrl,
u32 pm1b_ctrl);
static acpi_osd_handler acpi_irq_handler;
static void *acpi_irq_context;
static struct workqueue_struct *kacpid_wq;
......@@ -1641,3 +1644,24 @@ acpi_status acpi_os_terminate(void)
return AE_OK;
}
acpi_status acpi_os_prepare_sleep(u8 sleep_state, u32 pm1a_control,
u32 pm1b_control)
{
int rc = 0;
if (__acpi_os_prepare_sleep)
rc = __acpi_os_prepare_sleep(sleep_state,
pm1a_control, pm1b_control);
if (rc < 0)
return AE_ERROR;
else if (rc > 0)
return AE_CTRL_SKIP;
return AE_OK;
}
void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state,
u32 pm1a_ctrl, u32 pm1b_ctrl))
{
__acpi_os_prepare_sleep = func;
}
......@@ -57,6 +57,7 @@
#define ACPI_SUCCESS(a) (!(a))
#define ACPI_FAILURE(a) (a)
#define ACPI_SKIP(a) (a == AE_CTRL_SKIP)
#define AE_OK (acpi_status) 0x0000
/*
......
......@@ -371,4 +371,14 @@ static inline int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *),
#endif /* !CONFIG_ACPI */
#ifdef CONFIG_ACPI
void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state,
u32 pm1a_ctrl, u32 pm1b_ctrl));
acpi_status acpi_os_prepare_sleep(u8 sleep_state,
u32 pm1a_control, u32 pm1b_control);
#else
#define acpi_os_set_prepare_sleep(func, pm1a_ctrl, pm1b_ctrl) do { } while (0)
#endif
#endif /*_LINUX_ACPI_H*/
......@@ -143,7 +143,6 @@ static inline int tboot_enabled(void)
extern void tboot_probe(void);
extern void tboot_shutdown(u32 shutdown_type);
extern void tboot_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control);
extern struct acpi_table_header *tboot_get_dmar_table(
struct acpi_table_header *dmar_tbl);
extern int tboot_force_iommu(void);
......
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