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Add ACPI subsystem mutex support, currently disabled. This implements

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a private mutex we can use to wrap the ACPI subsystem proper.
This commit is contained in:
Mike Smith 2001-06-29 20:33:29 +00:00
parent e71b638175
commit 03b5e1982a
1 changed files with 21 additions and 1 deletions
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22
sys/dev/acpica/acpivar.h
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@ -66,11 +66,31 @@ struct acpi_device {
/* resources */
struct resource_list ad_rl;
};
/*
* The ACPI subsystem lives under a single mutex. You *must*
* acquire this mutex before calling any of the acpi_ or Acpi* functions.
*
* XXX the ACPI_MSLEEP macro should go away once locking is resolved
*/
extern struct mtx acpi_mutex;
#if 0
# define ACPI_LOCK mtx_lock(&acpi_mutex)
# define ACPI_UNLOCK mtx_unlock(&acpi_mutex)
# define ACPI_ASSERTLOCK mtx_assert(&acpi_mutex, MA_OWNED)
# define ACPI_MSLEEP(a, b, c, d, e) msleep(a, b, c, d, e)
#else
# define ACPI_LOCK
# define ACPI_UNLOCK
# define ACPI_ASSERTLOCK
# define ACPI_MSLEEP(a, b, c, d, e) tsleep(a, c, d, e)
#endif
/*
* This is a cheap and nasty way to get around the horrid counted list
* argument format that AcpiEvalateMethod uses.
* argument format that AcpiEvalateObject uses.
*/
#define ACPI_OBJECTLIST_MAX 16
struct acpi_object_list {