Commit Graph

168 Commits

Author SHA1 Message Date
imp
4a464d3b43 Introduce bus_free_resource. It is a convenience function which wraps
bus_release_resource by grabbing the rid from the resource.
2005-01-19 06:52:19 +00:00
imp
58871563b4 Implement device_quiesce. This method means 'you are about to be
unloaded, cleanup, or return ebusy of that's inconvenient.'  The
default module hanlder for newbus will now call this when we get a
MOD_QUIESCE event, but in the future may call this at other times.

This shouldn't change any actual behavior until drivers start to use it.
2004-12-31 20:47:51 +00:00
njl
6224f36cad Add the devclass_get_count(9) function and man page. It gets a count of
the number of devices in a devclass and is a subset of
devclass_get_devices(9).

Reviewed by:	imp, dfr
2004-12-08 02:39:56 +00:00
obrien
70d525536e When panicing in device_unbusy(), actually tell what device has the issue. 2004-12-05 20:58:56 +00:00
imp
29f3f48407 Start to add GIANT_REQUIRED; macros in places where giant is required
and that I've verified things seem to basically work.  I was able to
boot and hot plug usb devices.  Please let me know if this causes
problems for anybody.

The push down of giant has proceeded to the point that this will start
to matter more and more.
2004-12-05 07:55:30 +00:00
phk
a8ef4cbd45 Don't print the singularly unhelpful message:
unknown: not probled (disabled)

During verbose boot.
2004-11-03 09:06:45 +00:00
njl
846d39b0ea Update flags patch for the !ISA case.
* Get flags first, in case there is no devclass.
* Reset flags after each probe in case the next driver has no hints so it
  doesn't inherit the old ones.
* Set them again before the winning probe.

Tested ok both with and without ACPI for ISA device flags.

Reviewed by:	imp
MFC after:	1 day
2004-10-14 17:14:56 +00:00
njl
a39c5fd2f1 Set flags for devices before probing them. In the non-ISA case, flags set
via hints were not getting passed to the child.

PR:		kern/72489
MFC after:	1 day
2004-10-13 07:10:41 +00:00
imp
7387033363 Fix BUS_DEBUG case 2004-08-30 05:48:49 +00:00
imp
5bc031c873 Initial support (disabled) for rebidding devices. I've been running
this in my tree for a while and in its disabled state there are no
issues.  It isn't enabled yet because some drivers (in acpi) have side
effects in their probe routines that need to be resolved in some
manner before this can be turned on.  The consensus at the last
developer's summit was to provide a static method for each driver
class that will return characteristics of the driver, one of which is
if can be reprobed idempotently.
2004-08-29 18:25:21 +00:00
imp
890b511bba MFp4: Merge in the patches, submitted long ago by someone whose email
address I've lost, that move the location information to the atttach
routine as well.  While one could use devinfo to get this data, that
is difficult and error prone and subject to races for short lived
devices.

Would make a good MT5 candidate.
2004-08-29 18:11:10 +00:00
imp
9b0c1e7ac1 Set the description to NULL in the right detach routine. This should
keep dangling pointers to strings in loaded modules from hanging
around after the drivers are unloaded.
2004-08-24 05:19:15 +00:00
dfr
030de024cc Add doxygen doc comments for most of newbus and the BUS interface. 2004-07-18 16:30:31 +00:00
phk
5c95d686a1 Do a pass over all modules in the kernel and make them return EOPNOTSUPP
for unknown events.

A number of modules return EINVAL in this instance, and I have left
those alone for now and instead taught MOD_QUIESCE to accept this
as "didn't do anything".
2004-07-15 08:26:07 +00:00
imp
9f2638da1f Hide struct resource and struct rman. You must define
__RMAN_RESOURCE_VISIBLE to see inside these now.

Reviewed by: dfr, njl (not njr)
2004-06-30 16:54:10 +00:00
imp
3e05633a44 Include more information about the device in the devadded and
devremoved events.  This reduces the races around these events.  We
now include the pnp info in both.  This lets one do more interesting
thigns with devd on device insertion.

Submitted by: Bernd Walter
2004-06-30 02:46:25 +00:00
imp
d334c4b305 Turns out that jhb didn't really like this. And nate pointed out that
it wasn't a good idea to have the test for NULL on only a limited
subset.  Go back because I'm not sure adding NULL to all the others is
a good idea.
2004-06-28 03:40:23 +00:00
imp
bd52bbc3c7 Allow dev to be NULL and assume that a device is not alive or not
attached.

Reviewed by: njl(?) and jhb
2004-06-28 02:24:04 +00:00
phk
dfd1f7fd50 Do the dreaded s/dev_t/struct cdev */
Bump __FreeBSD_version accordingly.
2004-06-16 09:47:26 +00:00
mux
b7f9b2983e When we don't have any meaningful value to print for the device sysctl
tree, output an empty string instead of "?".  This is already what
happened with DEVICE_SYSCTL_LOCATION and DEVICE_SYSCTL_PNPINFO.  This
makes the output of "sysctl dev" much nicer (it won't display those
empty sysctls).

Reviewed by:	des
2004-06-05 11:39:05 +00:00
des
7fec1d4931 Add a devclass level to the dev sysctl tree, in order to support per-
class variables in addition to per-device variables.  In plain English,
this means that dev.foo0.bar is now called dev.foo.0.bar, and it is
possible to to have dev.foo.bar as well.
2004-06-04 10:23:00 +00:00
mux
0ccfefe220 As discussed on arch@, flatten the device sysctl tree to make it
more convenient to deal with.  The notion of hierarchy is however
preserved by adding a new %parent node.
2004-06-02 22:43:35 +00:00
pjd
19d2b54248 Sysctl hw.bus.devctl_disable shouldn't be writtable from inside a jail.
Approved by:	imp
2004-05-26 16:36:32 +00:00
des
7eb92d1257 As previously threatened, give each device its own sysctl context and
subtree (under the new dev top-level node).  This should greatly simplify
drivers which need per-device sysctl variables (such as ndis).
2004-05-25 12:06:26 +00:00
scottl
7996fbe9e3 Don't print out 'GIANT-LOCKED' for INTR_FAST drivers. 2004-04-01 07:18:42 +00:00
imp
5d9dc609bb Conform to local file sytle and prefer (a && (b & flag)). 2004-03-24 16:49:37 +00:00
obrien
e182cf9fee Change the !MPSAFE boot string to something that doesn't potentially
scare users that the kernel won't run on MP systems.
2004-03-23 01:58:09 +00:00
obrien
71b6e14bc8 Rather than display which interrupts are MPSAFE, display those that aren't.
This way we can take stock of the work to be done.  boot -v will note those
interrupts that are MPSAFE.
2004-03-22 22:36:11 +00:00
des
2e0da0ec37 Whitespace cleanup 2004-02-24 19:31:30 +00:00
phk
ad925439e0 Device megapatch 4/6:
Introduce d_version field in struct cdevsw, this must always be
initialized to D_VERSION.

Flip sense of D_NOGIANT flag to D_NEEDGIANT, this involves removing
four D_NOGIANT flags and adding 145 D_NEEDGIANT flags.
2004-02-21 21:10:55 +00:00
sam
0927f68a45 o make debug_mpsafenet globally visible
o move it from subr_bus.c to netisr.c where it more properly belongs
o add NET_PICKUP_GIANT and NET_DROP_GIANT macros that will be used to
  grab Giant as needed when MPSAFE operation is enabled

Supported by:	FreeBSD Foundation
2003-11-05 23:42:51 +00:00
imp
535923b1ec Minor style(9) nit 2003-11-05 06:14:48 +00:00
sam
0faeaa0329 disable MPSAFE network drivers; we aren't ready yet` 2003-11-04 02:01:42 +00:00
sam
1beb7cc4f2 Add a temporary mechanism to disble INTR_MPSAFE from network interface
drivers.  This is prepatory to running more parts of the network system
w/o Giant.
2003-10-29 18:29:50 +00:00
imp
a73d1ed688 Convenience functions to generate notifications from the kernel. The ACPI
code will start using these shortly.

Reviewed by: njl
2003-10-24 22:41:54 +00:00
dfr
3dac505582 * Add multiple inheritance to kobj. Each class can have zero or more base
classes and if a method is not found in a given class, its base classes
  are searched (in the order they were declared). This search is recursive,
  i.e. a method may be define in a base class of a base class.
* Change the kobj method lookup algorithm to one which is SMP-safe. This
  relies only on the constraint that an observer of a sequence of writes
  of pointer-sized values will see exactly one of those values, not a
  mixture of two or more values. This assumption holds for all processors
  which FreeBSD supports.
* Add locking to kobj class initialisation.
* Add a simpler form of 'inheritance' for devclasses. Each devclass can
  have a parent devclass. Searches for drivers continue up the chain of
  devclasses until either a matching driver is found or a devclass is
  reached which has no parent. This can allow, for instance, pci drivers
  to match cardbus devices (assuming that cardbus declares pci as its
  parent devclass).
* Increment __FreeBSD_version.

This preserves the driver API entirely except for one minor feature used
by the ISA compatibility shims. A workaround for ISA compatibility will
be committed separately. The kobj and newbus ABI has changed - all modules
must be recompiled.
2003-10-16 09:16:28 +00:00
imp
e34b12b9cd With DIAGNOSTICS, sometimes we get weird crashes when some driver
accesses softc after it is freed.  Use a different malloc type for
softc than the rest of the bus code to make it more clear when these
things happen that it is the driver that's at fault, not the bus code.

Suggested by: sam and/or phk (I think)
2003-10-14 06:22:07 +00:00
marcel
5b71626790 Introduce BUS_CONFIG_INTR(). The method allows devices to tell parents
about interrupt trigger mode and interrupt polarity. This allows ACPI
for example to pass interrupt resource information up the hierarchy.
The default implementation of the method therefore is to pass the
request to the parent.

Reviewed by: jhb, njl
2003-09-10 21:37:10 +00:00
sam
27b68e0947 Print a message at boot for interrupt handlers created with INTR_MPSAFE
and/or INTR_FAST.  This belongs elsehwere and perhaps under bootverbose;
I'm committing it for now as it's uesful to know which drivers have
been converted and which have not.
2003-09-05 22:51:18 +00:00
obrien
3b8fff9e4c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
markm
6cc289554b Fix some easy, global, lint warnings. In most cases, this means
making some local variables static. In a couple of cases, this means
removing an unused variable.
2003-04-30 12:57:40 +00:00
imp
fb873e6edf Create a new function, device_is_attached(), that is like
device_is_alive() that tells us if the device has successfully
attached.  device_is_alive just tells us that the device has
successfully probed.
2003-04-21 18:19:08 +00:00
imp
cf3cf85267 Fix /dev/devctl's implementation of poll. We should only be setting
the poll bits when there's actually something in the queue.
Otherwise, select always returned '2' when there were no items to be
read, and '3' when there were.  This would preclude being able to read
in a threaded (libc_r) program, as well as checking to see if there
were pending events or not.
2003-04-21 05:58:51 +00:00
jhb
c0b4f09416 Lock the process before sending it a SIGIO. Not doing so is a panic(2)
implementation with INVARIANTS.
2003-04-02 21:54:51 +00:00
alfred
91e561ec03 Make sure we actually have a dev before dereferencing in case someone
botches and sends us a NULL pointer.  The other code in this file seems
to expect it to be able to handle it behaving this way.
2003-03-13 06:29:44 +00:00
phk
0ae911eb0e Gigacommit to improve device-driver source compatibility between
branches:

Initialize struct cdevsw using C99 sparse initializtion and remove
all initializations to default values.

This patch is automatically generated and has been tested by compiling
LINT with all the fields in struct cdevsw in reverse order on alpha,
sparc64 and i386.

Approved by:    re(scottl)
2003-03-03 12:15:54 +00:00
imp
c4382c90c1 Fix comment about what we do when there are no listeners. 2003-01-19 00:34:17 +00:00
davidxu
0893470fa0 Don't forget to disconnect object from class. 2003-01-15 14:58:07 +00:00
davidxu
87fb929397 Don't record thread pointer, it's not permanent in process life cycle,
use process pointer instead.
2003-01-10 09:54:51 +00:00
schweikh
d3367c5f5d Correct typos, mostly s/ a / an / where appropriate. Some whitespace cleanup,
especially in troff files.
2003-01-01 18:49:04 +00:00