ACPI S3 patch for testing

[Joerg Sonnenberger <joerg%britannica.bec.de@localhost>]

Hi all,
please give the attached patch some testing. It should fix interrupt
handling after suspend-to-RAM on some machines and certainly not break
all other systems. This patch is intended for pullup to netbsd-5. Please
report any regressions.

Joerg

Index: arch/x86/acpi/acpi_wakeup.c
===================================================================
RCS file: /home/joerg/repo/netbsd/src/sys/arch/x86/acpi/acpi_wakeup.c,v
retrieving revision 1.10
diff -u -p -r1.10 acpi_wakeup.c
--- arch/x86/acpi/acpi_wakeup.c 23 Sep 2008 14:54:23 -0000      1.10
+++ arch/x86/acpi/acpi_wakeup.c 15 Nov 2008 21:05:28 -0000
@@ -376,6 +376,8 @@ acpi_md_sleep(int state)
        AcpiClearEvent(ACPI_EVENT_RTC);
        AcpiHwDisableAllGpes ();
 
+       acpi_pci_link_resume();
+
 out:
 
 #ifdef MULTIPROCESSOR
Index: dev/acpi/acpi_pci_link.c
===================================================================
RCS file: /home/joerg/repo/netbsd/src/sys/dev/acpi/acpi_pci_link.c,v
retrieving revision 1.13
diff -u -p -r1.13 acpi_pci_link.c
--- dev/acpi/acpi_pci_link.c    4 Jun 2008 21:37:03 -0000       1.13
+++ dev/acpi/acpi_pci_link.c    15 Nov 2008 21:06:11 -0000
@@ -1156,6 +1156,20 @@ acpi_pci_link_devbyhandle(ACPI_HANDLE ha
        return (void *)sc;
 }
 
+void
+acpi_pci_link_resume(void)
+{
+       struct acpi_pci_link_softc *sc;
+       ACPI_BUFFER srsbuf;
+
+       TAILQ_FOREACH(sc, &acpi_pci_linkdevs, pl_list) {
+               ACPI_SERIAL_BEGIN(pci_link);
+               if (ACPI_SUCCESS(acpi_pci_link_srs(sc, &srsbuf)))
+                       AcpiOsFree(srsbuf.Pointer);
+               ACPI_SERIAL_END(pci_link);
+       }
+}
+
 ACPI_HANDLE
 acpi_pci_link_handle(void *v)
 {
Index: dev/acpi/acpivar.h
===================================================================
RCS file: /home/joerg/repo/netbsd/src/sys/dev/acpi/acpivar.h,v
retrieving revision 1.33
diff -u -p -r1.33 acpivar.h
--- dev/acpi/acpivar.h  15 Jul 2008 16:15:28 -0000      1.33
+++ dev/acpi/acpivar.h  15 Nov 2008 21:04:37 -0000
@@ -289,6 +289,7 @@ int         acpi_pci_link_route_interrupt(void 
 char *         acpi_pci_link_name(void *);
 ACPI_HANDLE    acpi_pci_link_handle(void *);
 void           acpi_pci_link_state(void);
+void           acpi_pci_link_resume(void);
 
 struct acpi_io         *acpi_res_io(struct acpi_resources *, int);
 struct acpi_iorange    *acpi_res_iorange(struct acpi_resources *, int);