Commit Graph

11 Commits

Author SHA1 Message Date
Warner Losh
5fa2979791 Create devctl freeze/thaw.
This adds it to devctl, libdevctl, defines the two IOCTLs and
implements the kernel bits. causes any new drivers that are added via
kldload to be deferred until a 'thaw' comes in. These do not stack: it
is an error to freeze while frozen, or thaw while thawed.

Differential Revision: https://reviews.freebsd.org/D16735
2018-08-23 05:05:47 +00:00
Bryan Drewery
ea825d0274 DIRDEPS_BUILD: Update dependencies.
Sponsored by:	Dell EMC Isilon
2017-10-31 00:07:04 +00:00
Maxim Konovalov
6dce7e9908 o Missed flag restored.
PR:		219395
Submitted by:	Tiwei Bie
2017-05-19 20:02:32 +00:00
John Baldwin
e05ec081fe Implement 'devctl clear driver' to undo a previous 'devctl set driver'.
Add a new 'clear driver' command for devctl along with the accompanying
ioctl and devctl_clear_driver() library routine to reset a device to
use a wildcard devclass instead of a fixed devclass.  This can be used
to undo a previous 'set driver' command.  After the device's name has
been reset to permit wildcard names, it is reprobed so that it can
attach to newly-available (to it) device drivers.

MFC after:	1 month
Sponsored by:	Chelsio Communications
2016-08-29 22:48:36 +00:00
John Baldwin
88eb5c506d Add 'devctl delete' that calls device_delete_child().
'devctl delete' can be used to delete a device that is no longer present.
As an anti-foot-shooting measure, 'delete' will not delete a device
unless it's parent bus says it is no longer present.  This can be
overridden by passing the force ('-f') flag.

Note that this command should be used with care.  If a device is deleted
that is actually present it can't be resurrected unless the parent bus
device's driver supports rescans.

Differential Revision:	https://reviews.freebsd.org/D6019
2016-04-27 16:33:17 +00:00
John Baldwin
a907c6914c Add a new rescan method to the bus interface.
The BUS_RESCAN() method rescans a single bus device checking for devices
that have been added or removed from the bus.  A new 'rescan' command is
added to devctl(8) to trigger a rescan.

Differential Revision:	https://reviews.freebsd.org/D6016
2016-04-27 16:29:03 +00:00
John Baldwin
0fd00e0caa - Note that devctl(8) will appear in 10.3 first.
- Add missing devctl_set_driver entry to namelist in devlist(3).
- Fix sorting of function prototypes in devlist(3).

MFC after:	3 days
2016-02-02 22:55:03 +00:00
Bryan Drewery
b1f92fa229 META MODE: Update dependencies with 'the-lot' and add missing directories.
This is not properly respecting WITHOUT or ARCH dependencies in target/.
Doing so requires a massive effort to rework targets/ to do so.  A
better approach will be to either include the SUBDIR Makefiles directly
and map to DIRDEPS or just dynamically lookup the SUBDIR.  These lose
the benefit of having a userland/lib, userland/libexec, etc, though and
results in a massive package.  The current implementation of targets/ is
very unmaintainable.

Currently rescue/rescue and sys/modules are still not connected.

Sponsored by:	EMC / Isilon Storage Division
2015-12-01 05:23:19 +00:00
Justin Hibbits
8947c2986d Fix formatting. 2015-07-16 05:14:20 +00:00
John-Mark Gurney
add9975cd1 install the man page...
Sponsored by:	FreeBSD Foundation
2015-02-16 02:20:11 +00:00
John Baldwin
64de80195b Add a new device control utility for new-bus devices called devctl. This
allows the user to request administrative changes to individual devices
such as attach or detaching drivers or disabling and re-enabling devices.
- Add a new /dev/devctl2 character device which uses ioctls for device
  requests.  The ioctls use a common 'struct devreq' which is somewhat
  similar to 'struct ifreq'.
- The ioctls identify the device to operate on via a string.  This
  string can either by the device's name, or it can be a bus-specific
  address.  (For unattached devices, a bus address is the only way to
  locate a device.)  Bus drivers register an eventhandler to claim
  unrecognized device names that the driver recognizes as a valid address.
  Two buses currently support addresses: ACPI recognizes any device
  in the ACPI namespace via its full path starting with "\" and
  the PCI bus driver recognizes an address specification of
  'pci[<domain>:]<bus>:<slot>:<func>' (identical to the PCI selector
  strings supported by pciconf).
- To make it easier to cut and paste, change the PnP location string
  in the PCI bus driver to output a full PCI selector string rather
  than 'slot=<slot> function=<func>'.
- Add a devctl(3) interface in libdevctl which provides a wrapper around
  the ioctls and is the preferred interface for other userland code.
- Add a devctl(8) program which is a simple wrapper around the requests
  supported by devctl(3).
- Add a device_is_suspended() function to check DF_SUSPENDED.
- Add a resource_unset_value() function that can be used to remove a
  hint from the kernel environment.  This is used to clear a
  hint.<driver>.<unit>.disabled hint when re-enabling a boot-time
  disabled device.

Reviewed by:	imp (parts)
Requested by:	imp (changing PCI location string)
Relnotes:	yes
2015-02-06 16:09:01 +00:00