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Message-Id: <200706210824.17801.nigel@nigel.suspend2.net>
Date: Thu, 21 Jun 2007 08:24:16 +1000
From: Nigel Cunningham <nigel@...el.suspend2.net>
To: "Rafael J. Wysocki" <rjw@...k.pl>
Cc: LKML <linux-kernel@...r.kernel.org>, pavel@....cz,
Andrew Morton <akpm@...l.org>, Andi Kleen <ak@...e.de>
Subject: Re: [PATCH] Optional Beeping During Resume From Suspend To Ram.
Hi.
On Thursday 21 June 2007 08:09:26 Rafael J. Wysocki wrote:
> Hi,
>
> On Tuesday, 19 June 2007 23:33, Rafael J. Wysocki wrote:
> > On Tuesday, 19 June 2007 13:18, Nigel Cunningham wrote:
> > > Hi all
> > >
> > > Here's what I have after today's work.
> > >
> > > I haven't yet been able to test on x86, but can confirm that it works okay on
> > > x86_64. I'm currently working towards testing it on my old Omnibook. My P4
> > > desktop won't resume from suspend to ram at all, and hasn't produced any
> > > beeps.
> > >
> > > I needed to move the BEEP invocation to after the data segment is reloaded,
> > > so that the test could access the variable. That was pretty tricky to find -
> > > no oops or anything bad prior, it just didn't beep when expected.
> > >
> > > A couple of notes:
> > >
> > > - I'd like to put the BEEP macro somewhere that can be shared by x86 32 and
> > > 64. If that's a good idea, any suggestions on where? Nothing occurs to me
> > > straight off.
> >
> > I don't know either. I think Andi is the right person to ask (CC added).
> >
> > > - I've just switched from Evo to Kmail. Please let me know if there's any
> > > mangling of the patch.
>
> Unfortunately, the message is encoded as "quoted printable" which results in
> the whitespace being mangled.
>
> > The patch looks good to me. I'll try to run it on an i386 tomorrow.
>
> I've recoded it and rediffed against -rc5 with the hibernation and suspend
> patchset. The resut is at
>
> http://www.sisk.pl/kernel/hibernation_and_suspend/2.6.22-rc5/patches/29-Optional-Beeping-During-Resume-From-RAM.patch
>
> Well, my i386 test box doesn't seem to be able to beep at all. I'll have to
> look for another one ...
Ok. No success with the Omnibook yet, though I did see it mentioned in Documentation/... as needing a vbepost.
Think I found the right option. Does this patch come through better?
Nigel
arch/i386/kernel/acpi/wakeup.S | 29 ++++++++++++++++++++++++++++-
arch/x86_64/kernel/acpi/wakeup.S | 25 +++++++++++++++++++++++++
include/linux/acpi.h | 1 +
kernel/power/main.c | 23 +++++++++++++++++++++++
4 files changed, 77 insertions(+), 1 deletion(-)
diff -ruNp 970-str-beep.patch-old/arch/i386/kernel/acpi/wakeup.S 970-str-beep.patch-new/arch/i386/kernel/acpi/wakeup.S
--- 970-str-beep.patch-old/arch/i386/kernel/acpi/wakeup.S 2007-06-19 12:15:25.000000000 +1000
+++ 970-str-beep.patch-new/arch/i386/kernel/acpi/wakeup.S 2007-06-19 21:14:49.000000000 +1000
@@ -11,7 +11,22 @@
#
# If physical address of wakeup_code is 0x12345, BIOS should call us with
# 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
@@ -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
@@ -261,6 +286,8 @@ 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
ret
diff -ruNp 970-str-beep.patch-old/arch/x86_64/kernel/acpi/wakeup.S 970-str-beep.patch-new/arch/x86_64/kernel/acpi/wakeup.S
--- 970-str-beep.patch-old/arch/x86_64/kernel/acpi/wakeup.S 2007-06-19 12:15:28.000000000 +1000
+++ 970-str-beep.patch-new/arch/x86_64/kernel/acpi/wakeup.S 2007-06-19 21:14:49.000000000 +1000
@@ -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 -ruNp 970-str-beep.patch-old/include/linux/acpi.h 970-str-beep.patch-new/include/linux/acpi.h
--- 970-str-beep.patch-old/include/linux/acpi.h 2007-06-19 21:15:08.000000000 +1000
+++ 970-str-beep.patch-new/include/linux/acpi.h 2007-06-19 21:14:49.000000000 +1000
@@ -123,6 +123,7 @@ 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 -ruNp 970-str-beep.patch-old/kernel/power/main.c 970-str-beep.patch-new/kernel/power/main.c
--- 970-str-beep.patch-old/kernel/power/main.c 2007-06-19 12:15:55.000000000 +1000
+++ 970-str-beep.patch-new/kernel/power/main.c 2007-06-19 21:14:49.000000000 +1000
@@ -308,6 +308,27 @@ 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;
@@ -333,11 +354,13 @@ 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 */
--
Nigel, Michelle and Alisdair Cunningham
5 Mitchell Street
Cobden 3266
Victoria, Australia
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