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SubjectRe: [PATCH 1/3] Generic acpi vgapost
Michael Marineau napsal(a):

>Generic function to post the video bios.
>
>Based directly on the original patch by Ole Rohne.
>
>Signed-off-by: Michael Marineau <marineam@engr.orst.edu>
>
>
>------------------------------------------------------------------------
>
>Index: linux-2.6.13-rc7/arch/i386/kernel/acpi/sleep.c
>===================================================================
>--- linux-2.6.13-rc7.orig/arch/i386/kernel/acpi/sleep.c
>+++ linux-2.6.13-rc7/arch/i386/kernel/acpi/sleep.c
>@@ -5,6 +5,7 @@
> * Copyright (C) 2001-2003 Pavel Machek <pavel@suse.cz>
> */
>
>+#include <linux/module.h>
> #include <linux/acpi.h>
> #include <linux/bootmem.h>
> #include <linux/dmi.h>
>@@ -56,6 +57,34 @@ void acpi_restore_state_mem (void)
> zap_low_mappings();
> }
>
>+/*
>+ * acpi_vgapost
>+ */
>+
>+extern void do_vgapost_lowlevel (unsigned long);
>+
>+void acpi_vgapost (unsigned long slot)
>+{
>+ unsigned long flags, saved_video_flags = acpi_video_flags;
>+
>+ acpi_video_flags = (slot & 0xffff) << 16 | 1;
>+
>+ /* Map low memory and copy information */
>+ init_low_mapping(swapper_pg_dir, USER_PTRS_PER_PGD);
>+ memcpy((void *) acpi_wakeup_address, &wakeup_start, &wakeup_end - &wakeup_start);
>
>
80 chars on a line, again...

>+ acpi_copy_wakeup_routine(acpi_wakeup_address);
>+
>+ /* Tunnel thru real mode */
>+ local_irq_save(flags);
>+ do_vgapost_lowlevel(acpi_wakeup_address);
>+ local_irq_restore(flags);
>
>

--
Jiri Slaby www.fi.muni.cz/~xslaby
~\-/~ jirislaby@gmail.com ~\-/~
241B347EC88228DE51EE A49C4A73A25004CB2A10

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