Author: jhb
Date: Mon Aug 22 18:36:58 2011
New Revision: 225079
URL: http://svn.freebsd.org/changeset/base/225079
Log:
Add two new macros DRIVER_MODULE_ORDERED() and EARLY_DRIVER_MODULE_ORDERED()
that allow a module to use an order other than the default of
SI_ORDER_MIDDLE when registering a driver. This can be useful for drivers
in a kld that contain multiple new-bus drivers as part of one logical device
driver. A typical case would be to use SI_ORDER_LAST for the "main" driver
to ensure that any other "helper" drivers are registered and available
before the "main" driver attempts to attach.
Tested by: kib, Jason Harmening jason harmening / gmail
Approved by: re (kib)
MFC after: 1 week
Modified:
head/sys/sys/bus.h
Modified: head/sys/sys/bus.h
==============================================================================
--- head/sys/sys/bus.h Mon Aug 22 16:35:46 2011 (r225078)
+++ head/sys/sys/bus.h Mon Aug 22 18:36:58 2011 (r225079)
@@ -596,7 +596,8 @@ struct driver_module_data {
int dmd_pass;
};
-#define EARLY_DRIVER_MODULE(name, busname, driver, devclass, evh, arg,
pass) \
+#define EARLY_DRIVER_MODULE_ORDERED(name, busname, driver, devclass,
\
+ evh, arg, order, pass) \
\
static struct driver_module_data name##_##busname##_driver_mod = { \
evh, arg, \
@@ -612,7 +613,16 @@ static moduledata_t name##_##busname##_m
&name##_##busname##_driver_mod \
}; \
DECLARE_MODULE(name##_##busname, name##_##busname##_mod, \
- SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
+ SI_SUB_DRIVERS, order)
+
+#define EARLY_DRIVER_MODULE(name, busname, driver, devclass, evh, arg,
pass) \
+ EARLY_DRIVER_MODULE_ORDERED(name, busname, driver, devclass, \
+ evh, arg, SI_ORDER_MIDDLE, pass)
+
+#define DRIVER_MODULE_ORDERED(name, busname, driver, devclass, evh,
arg,\
+ order) \
+ EARLY_DRIVER_MODULE_ORDERED(name, busname, driver, devclass, \
+ evh, arg, order, BUS_PASS_DEFAULT)
#define DRIVER_MODULE(name, busname, driver, devclass, evh, arg)
\
EARLY_DRIVER_MODULE(name, busname, driver, devclass, evh, arg, \
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