The patch titled
PM: Optional beeping during resume from suspend to RAM
has been added to the -mm tree. Its filename is
pm-optional-beeping-during-resume-from-suspend-to-ram.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: PM: Optional beeping during resume from suspend to RAM
From: Nigel Cunningham <nigel@xxxxxxxxxxxxxxxxxx>
Add a feature allowing the user to make the system beep during a resume from
suspend to RAM, on x86_64 and i386.
This is useful for the users with broken resume from RAM, so that they can
verify if the control reaches the kernel after a wake-up event.
Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/i386/kernel/acpi/wakeup.S | 27 +++++++++++++++++++++++++++
arch/x86_64/kernel/acpi/wakeup.S | 25 +++++++++++++++++++++++++
include/linux/acpi.h | 1 +
kernel/power/main.c | 23 +++++++++++++++++++++++
4 files changed, 76 insertions(+)
diff -puN arch/i386/kernel/acpi/wakeup.S~pm-optional-beeping-during-resume-from-suspend-to-ram arch/i386/kernel/acpi/wakeup.S
--- a/arch/i386/kernel/acpi/wakeup.S~pm-optional-beeping-during-resume-from-suspend-to-ram
+++ a/arch/i386/kernel/acpi/wakeup.S
@@ -13,6 +13,21 @@
# cs = 0x1234, eip = 0x05
#
+#define BEEP \
+ inb $97, %al; \
+ outb %al, $0x80; \
+ movb $3, %al; \
+ outb %al, $97; \
+ outb %al, $0x80; \
+ movb $-74, %al; \
+ outb %al, $67; \
+ outb %al, $0x80; \
+ movb $-119, %al; \
+ outb %al, $66; \
+ outb %al, $0x80; \
+ movb $15, %al; \
+ outb %al, $66;
+
ALIGN
.align 4096
ENTRY(wakeup_start)
@@ -31,6 +46,11 @@ wakeup_code:
movw %cs, %ax
movw %ax, %ds # Make ds:0 point to wakeup_start
movw %ax, %ss
+
+ testl $1, beep_flags - wakeup_code
+ jz 1f
+ BEEP
+1:
mov $(wakeup_stack - wakeup_code), %sp # Private stack is needed for ASUS board
movw $0x0e00 + 'S', %fs:(0x12)
@@ -88,6 +108,10 @@ wakeup_code:
cmpl $0x12345678, %eax
jne bogus_real_magic
+ testl $2, beep_flags - wakeup_code
+ jz 1f
+ BEEP
+1:
ljmpl $__KERNEL_CS,$wakeup_pmode_return
real_save_gdt: .word 0
@@ -98,6 +122,7 @@ real_save_cr4: .long 0
real_magic: .long 0
video_mode: .long 0
video_flags: .long 0
+beep_flags: .long 0
real_efer_save_restore: .long 0
real_save_efer_edx: .long 0
real_save_efer_eax: .long 0
@@ -262,6 +287,8 @@ ENTRY(acpi_copy_wakeup_routine)
movl %edx, video_mode - wakeup_start (%eax)
movl acpi_video_flags, %edx
movl %edx, video_flags - wakeup_start (%eax)
+ movl s2ram_beep, %edx
+ movl %edx, beep_flags - wakeup_start (%eax)
movl $0x12345678, real_magic - wakeup_start (%eax)
movl $0x12345678, saved_magic
popl %ebx
diff -puN arch/x86_64/kernel/acpi/wakeup.S~pm-optional-beeping-during-resume-from-suspend-to-ram arch/x86_64/kernel/acpi/wakeup.S
--- a/arch/x86_64/kernel/acpi/wakeup.S~pm-optional-beeping-during-resume-from-suspend-to-ram
+++ a/arch/x86_64/kernel/acpi/wakeup.S
@@ -16,6 +16,21 @@
# cs = 0x1234, eip = 0x05
#
+#define BEEP \
+ inb $97, %al; \
+ outb %al, $0x80; \
+ movb $3, %al; \
+ outb %al, $97; \
+ outb %al, $0x80; \
+ movb $-74, %al; \
+ outb %al, $67; \
+ outb %al, $0x80; \
+ movb $-119, %al; \
+ outb %al, $66; \
+ outb %al, $0x80; \
+ movb $15, %al; \
+ outb %al, $66;
+
ALIGN
.align 16
@@ -33,6 +48,13 @@ wakeup_code:
movw %cs, %ax
movw %ax, %ds # Make ds:0 point to wakeup_start
movw %ax, %ss
+
+ # Data segment must be set up before we can see whether to beep.
+ testl $1, beep_flags - wakeup_code
+ jz 1f
+ BEEP
+1:
+
# Private stack is needed for ASUS board
mov $(wakeup_stack - wakeup_code), %sp
@@ -229,6 +251,7 @@ gdt_48a:
.long gdta - wakeup_code # gdt base (relocated in later)
real_magic: .quad 0
+beep_flags: .quad 0
video_mode: .quad 0
video_flags: .quad 0
@@ -344,6 +367,8 @@ ENTRY(acpi_copy_wakeup_routine)
pushq %rax
pushq %rdx
+ movl s2ram_beep, %edx
+ movl %edx, beep_flags - wakeup_start (,%rdi)
movl saved_video_mode, %edx
movl %edx, video_mode - wakeup_start (,%rdi)
movl acpi_video_flags, %edx
diff -puN include/linux/acpi.h~pm-optional-beeping-during-resume-from-suspend-to-ram include/linux/acpi.h
--- a/include/linux/acpi.h~pm-optional-beeping-during-resume-from-suspend-to-ram
+++ a/include/linux/acpi.h
@@ -121,6 +121,7 @@ extern int pci_mmcfg_config_num;
extern int sbf_port;
extern unsigned long acpi_video_flags;
+extern unsigned long s2ram_beep;
#else /* !CONFIG_ACPI */
diff -puN kernel/power/main.c~pm-optional-beeping-during-resume-from-suspend-to-ram kernel/power/main.c
--- a/kernel/power/main.c~pm-optional-beeping-during-resume-from-suspend-to-ram
+++ a/kernel/power/main.c
@@ -332,6 +332,27 @@ static ssize_t state_store(struct kset *
power_attr(state);
+unsigned long s2ram_beep = 0;
+
+static ssize_t s2ram_beep_show(struct kset *kset, char *buf)
+{
+ return sprintf(buf, "%d\n", s2ram_beep);
+}
+
+static ssize_t
+s2ram_beep_store(struct kset *kset, const char *buf, size_t n)
+{
+ int val;
+
+ if (sscanf(buf, "%d", &val) > 0) {
+ s2ram_beep = val;
+ return n;
+ }
+ return -EINVAL;
+}
+
+power_attr(s2ram_beep);
+
#ifdef CONFIG_PM_TRACE
int pm_trace_enabled;
@@ -357,11 +378,13 @@ power_attr(pm_trace);
static struct attribute * g[] = {
&state_attr.attr,
&pm_trace_attr.attr,
+ &s2ram_beep_attr.attr,
NULL,
};
#else
static struct attribute * g[] = {
&state_attr.attr,
+ &s2ram_beep_attr.attr,
NULL,
};
#endif /* CONFIG_PM_TRACE */
_
Patches currently in -mm which might be from nigel@xxxxxxxxxxxxxxxxxx are
x86_64-pm_trace-support.patch
freezer-make-kernel-threads-nonfreezable-by-default.patch
freezer-make-kernel-threads-nonfreezable-by-default-fix.patch
freezer-make-kernel-threads-nonfreezable-by-default-fix-fix.patch
freezer-make-kernel-threads-nonfreezable-by-default-fix-2.patch
swsusp-remove-incorrect-code-from-userc.patch
swsusp-remove-code-duplication-between-diskc-and-userc.patch
swsusp-introduce-restore-platform-operations.patch
swsusp-fix-hibernation-code-ordering.patch
hibernation-prepare-to-enter-the-low-power-state.patch
freezer-avoid-freezing-kernel-threads-prematurely.patch
pm-introduce-hibernation-and-suspend-notifiers.patch
pm-introduce-hibernation-and-suspend-notifiers-fix.patch
pm-introduce-hibernation-and-suspend-notifiers-tidy.patch
pm-introduce-hibernation-and-suspend-notifiers-fix-fix.patch
pm-disable-usermode-helper-before-hibernation-and-suspend.patch
pm-disable-usermode-helper-before-hibernation-and-suspend-fix.patch
pm-prevent-frozen-user-mode-helpers-from-failing-the-freezing-of-tasks-rev-2.patch
pm-reduce-code-duplication-between-mainc-and-userc-updated.patch
pm-optional-beeping-during-resume-from-suspend-to-ram.patch
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