diff options
Diffstat (limited to 'sys/dev/acpi/dsdt.c')
| -rw-r--r-- | sys/dev/acpi/dsdt.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/sys/dev/acpi/dsdt.c b/sys/dev/acpi/dsdt.c index fb70fb0e3fa..8bfc1bb255e 100644 --- a/sys/dev/acpi/dsdt.c +++ b/sys/dev/acpi/dsdt.c @@ -1,4 +1,4 @@ -/* $OpenBSD: dsdt.c,v 1.197 2012/07/16 15:27:11 deraadt Exp $ */ +/* $OpenBSD: dsdt.c,v 1.198 2013/01/18 04:07:06 pirofti Exp $ */ /* * Copyright (c) 2005 Jordan Hargrave <jordan@openbsd.org> * @@ -731,6 +731,30 @@ long acpi_release_global_lock(void*); static long global_lock_count = 0; #define acpi_acquire_global_lock(x) 1 #define acpi_release_global_lock(x) 0 + +void +acpi_glk_enter(void) +{ + acpi_acquire_glk(&acpi_softc->sc_facs->global_lock); +} + +void +acpi_glk_leave(void) +{ + int x; + + if (acpi_release_glk(&acpi_softc->sc_facs->global_lock)) { + /* + * If pending, notify the BIOS that the lock was released + * by the OSPM. No locking is needed because nobody outside + * the ACPI thread is touching this register. + */ + x = acpi_read_pmreg(acpi_softc, ACPIREG_PM1_CNT, 0); + x |= ACPI_PM1_GBL_RLS; + acpi_write_pmreg(acpi_softc, ACPIREG_PM1_CNT, 0, x); + } +} + void aml_lockfield(struct aml_scope *scope, struct aml_value *field) { |