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Add two new macros DRIVER_MODULE_ORDERED() and EARLY_DRIVER_MODULE_ORDERED()

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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
This commit is contained in:
jhb 2011-08-22 18:36:58 +00:00
parent 1d94389f8f
commit 9d10e169c9
1 changed files with 12 additions and 2 deletions
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14
sys/sys/bus.h
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@ -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##_mod = { \
&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, \