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| author | Konstantin Belousov <kib@FreeBSD.org> | 2019-04-05 18:09:22 +0000 |
|---|---|---|
| committer | Konstantin Belousov <kib@FreeBSD.org> | 2019-04-05 18:09:22 +0000 |
| commit | c53df6da4e396b3bacdc7870a2815e69497b739e (patch) | |
| tree | 3ee1e5be52933656427373ab7f00ae944998a4ea /sys/sys | |
| parent | 9cdd5c07ad924249d620437d00458c3b6434dbe5 (diff) | |
| download | src-c53df6da4e396b3bacdc7870a2815e69497b739e.tar.gz src-c53df6da4e396b3bacdc7870a2815e69497b739e.zip | |
Provide newbus infrastructure for initiating device reset.
The methods BUS_RESET_PREPARE(), BUS_RESET(), and BUS_RESET_POST()
should be implemented by bus which can provide reset to a device. The
methods are described in inline doxygen comments.
Code only provides BUS_RESET_PREPARE() and BUS_RESET_POST() helpers
instead of default implementation, because actual bus needs to handle
device state around reset, while helpers provide the other half of
typical prepare/post code.
Reviewed by: imp (previous version), jhb (previous version)
Sponsored by: Mellanox Technologies
MFC after: 2 weeks
Differential revision: https://reviews.freebsd.org/D19646
Notes
Notes:
svn path=/head/; revision=345960
Diffstat (limited to 'sys/sys')
| -rw-r--r-- | sys/sys/bus.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sys/sys/bus.h b/sys/sys/bus.h index 4ad4231a9512..a9fc2387eccf 100644 --- a/sys/sys/bus.h +++ b/sys/sys/bus.h @@ -143,6 +143,10 @@ struct devreq { /* Flags for DEV_DELETE. */ #define DEVF_FORCE_DELETE 0x0000001 +/* Flags for DEV_RESET */ +#define DEVF_RESET_DETACH 0x0000001 /* Detach drivers vs suspend + device */ + #ifdef _KERNEL #include <sys/eventhandler.h> @@ -494,6 +498,8 @@ int bus_generic_unmap_resource(device_t dev, device_t child, int type, struct resource_map *map); int bus_generic_write_ivar(device_t dev, device_t child, int which, uintptr_t value); +int bus_helper_reset_post(device_t dev, int flags); +int bus_helper_reset_prepare(device_t dev, int flags); int bus_null_rescan(device_t dev); /* |