Commit Graph

138 Commits

Author SHA1 Message Date
Sam Leffler
d3be1471c7 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
Warner Losh
252af39a96 Minor style(9) nit 2003-11-05 06:14:48 +00:00
Sam Leffler
3465702f13 disable MPSAFE network drivers; we aren't ready yet` 2003-11-04 02:01:42 +00:00
Sam Leffler
90fc7b7cb8 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
Warner Losh
17e02bb39b 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
Doug Rabson
46ba7a35f2 * 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
Warner Losh
d29516dd82 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 Moolenaar
da13b8f9fe 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 Leffler
7c00e355a2 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
David E. O'Brien
677b542ea2 Use __FBSDID(). 2003-06-11 00:56:59 +00:00
Mark Murray
51da11a27a 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
Warner Losh
01a9b4348f 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
Warner Losh
e22b0bf4b8 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
John Baldwin
6751370f6f 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 Perlstein
569d3c4bf0 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
Poul-Henning Kamp
7ac40f5f59 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
Warner Losh
b47d073500 Fix comment about what we do when there are no listeners. 2003-01-19 00:34:17 +00:00
David Xu
4e77d3c6a2 Don't forget to disconnect object from class. 2003-01-15 14:58:07 +00:00
David Xu
7be6584678 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
Jens Schweikhardt
9d5abbddbf Correct typos, mostly s/ a / an / where appropriate. Some whitespace cleanup,
especially in troff files.
2003-01-01 18:49:04 +00:00
Warner Losh
62c8b32c71 Use 0600 for permissions for /dev/devctl until it is cloneable.
Use UID_ROOT and GID_WHEEL rather than 0.

Prompted by: rwatson
2003-01-01 03:43:58 +00:00
Warner Losh
304f10ce4a devd kernel improvements:
1) Record all device events when devctl is enabled, rather than just when
   devd has devctl open.  This is necessary to prevent races between when
   a device arrives, and when devd starts.
2) Add hw.bus.devctl_disable to disable devctl, this can also be set as a
   tunable.
3) Fix async support. Reset nonblocking and async_td in open.  remove
   async flags.
4) Free all memory when devctl is disabled.

Approved by: re (blanket)
2002-11-30 00:49:43 +00:00
John Baldwin
d0e938f4f1 Use %z to quiet a warning. 2002-11-07 22:38:04 +00:00
Poul-Henning Kamp
9736c8f03a Use ; not , as statement separator in PDEBUG() macro.
Ignoring a NULL dev in device_set_ivars() sounds wrong, KASSERT it to
non-NULL instead.

Do the same for device_get_ivars() for reasons of symmetry, though
it probably would have yielded a panic anyway, this gives more precise
diagnostics.

Absentmindedly nodded OK to by:	jhb
2002-10-15 18:56:13 +00:00
Warner Losh
0b294f891d Introducing /dev/devctl. This device reports events in the
configuration device hierarchy.  Device arrival, departure and not
matched are presently reported.  This will be the basis for devd, which
I still need to polish a little more before I commit it.  If you don't
use /dev/devctl, it will be a noop.
2002-10-07 23:17:44 +00:00
Warner Losh
c17fdbe3a9 Two minor bugfixes:
o Allow the bus_debug variable to be set via the bus.debug tunable.
o Return pnpinfo and location info via the devinfo interface to userland.
  devinfo(8) needs to be updated to print it.
2002-10-07 23:15:40 +00:00
Warner Losh
0a1d3ef9b8 Add wrappers around the newly created bus_child_pnpinfo_str and
bus_child_location_str.
2002-10-07 07:08:00 +00:00
Warner Losh
d71dec96bf Minor string handling cleanup that I've had in my tree for a while:
Don't use snprintf where strlcpy() will do the job.
Also, a NUL is '\0' not 0 in our style (C doesn't care), so spell it like.
Remove useless {} and () in the general area of this change.
2002-10-07 06:50:35 +00:00
Warner Losh
da7b83f9ea Don't need to NUL terminate after snprintf 2002-10-07 06:26:17 +00:00
Poul-Henning Kamp
c56c20f13d Absorb <sys/bus_private.h> into kern/subr_bus.c to prevent misunderstandings.
Suggested by:	bde
Approved by:	dfr
2002-10-02 09:34:29 +00:00
Poul-Henning Kamp
651dde1b81 Move includ of <sys/bus_priate.h> later to get semantic identity of
device_t the same throughout kernel.

This is a very fine point of C which fortunatly does not make any
difference in normal circumstances but which due to the pervasiveness
of device_t in the kernel can make a lint barf a lot.
2002-09-28 21:38:35 +00:00
Warner Losh
bed807193b Add additional information returned to userland by the device querying
functions.  We add pnpinfo, locationinfo, devflags (the newbus flags
on the device), flags (the flags that device_get_flags returns) and
state to the list of things we return.

pnpinfo and locationinfo are place holders at the moment that will be
filled in by the device's parent (optionally).  Userland programs will
likely use this information from time to time and take appropriate
actions.

Improvements to devinfo to follow.
2002-09-14 19:15:12 +00:00
Bruce Evans
f70de49661 Fixed style bugs in resource_list_add_next(). 2002-09-12 13:45:38 +00:00
Bruce Evans
527eee2d40 Include <vm/uma.h> instead of depending on namespace pollution in
<sys/malloc.h>.

Sorted includes as much as possible.  Removed banal comment(s) attached to
includes.
2002-09-11 07:13:28 +00:00
Warner Losh
5878eb3fca Add bus_child_present and the child_present method to bus_if.m 2002-07-21 03:28:43 +00:00
Poul-Henning Kamp
00d70dec4e Don't call malloc(9) to allocate zero bytes softc data for devices. 2002-04-23 15:48:23 +00:00
Matthew N. Dodd
32bc1098b2 Add resource_list_add_next() which returns the RID for the resource added. 2002-03-29 06:42:54 +00:00
Bruce Evans
3006e31679 Don't (blindly) truncate the unit number to 4 digits when formatting the
string returned by device_get_nameunit().
2002-03-06 11:34:02 +00:00
Bruce Evans
ffe4d2f7c7 Fixed 3 regressions in rev.1.99 (clobbering of the English fix in rev.1.98,
and 2 unformattings).
2002-02-26 16:17:45 +00:00
Søren Schmidt
ed57cfc480 Hide "bla bla exists, skipping it" behind bootverbose. 2002-02-26 10:38:33 +00:00
Bruce Evans
25bf7324c8 Fixed an apparent typo ("-" before ":") and an English error (comma
splice) in the "already exists" message.

Fixed some minor style bugs (KNFization to "return (foo)" had rotted
in 2 out of 177 cases).
2001-12-28 18:32:13 +00:00
Thomas Moestl
87b1520ae4 Add a generic __BUS_ACCESSOR macro to construct ivar accessor functions,
and a generic resource_list_print_type() function to print all resouces
of a certain type in a resource list.
Use ulmin()/ulmax() instead of min()/max() in two places to handle
u_longs correctly.
2001-12-21 21:45:09 +00:00
David E. O'Brien
a48740b6c5 Update to C99, s/__FUNCTION__/__func__/. 2001-12-10 05:51:45 +00:00
Andrew R. Reiter
22524ad0e2 o No need to set values to 0 when we utilize M_ZERO
Approved by: peter
2001-11-05 22:27:46 +00:00
Warner Losh
89bbe0cd1e Don't hide the failure to allocate device behind boot verbose. It is
still telling us of real problems so should remain until it stops
doing that.

Submitted by: OGAWA Takaya <t-ogawa@triaez.kaisei.org>
2001-11-02 17:33:06 +00:00
Andrey A. Chernov
82849b4dfe Add new interface function
int	devclass_find_free_unit(devclass_t dc, int unit);
which return first free unit in given class starting from 'unit'.
2001-11-01 05:07:28 +00:00
Andrey A. Chernov
e9c044bd9e 1) In devclass_alloc_unit(), skip duplicated wired devices (i.e. with fixed
number) instead of allocating next free unit for them.  If someone needs
fixed place, he must specify it correctly. "Allocating next" is especially bad
because leads to double device detection and to "repeat make_dev panic" as
result.  This can happens if the same devices present somewhere on PCI bus,
hints and  ACPI.  Making them present in one place only not always
possible, "sc" f.e.  can't be removed from hints, it results to no console at
all.

2) In make_device(), detect when devclass_add_device() fails, free dev and
return. I.e. add missing error checking. This part needed to finish fix in 1),
but must be done this way in anycase, with old variant too.
2001-10-28 23:32:35 +00:00
Peter Wemm
2fc4762c60 Move the hints gunk to a seperate file. It isn't really part of the
newbus structure (no more than subr_rman.c is anyway).
2001-07-14 08:25:18 +00:00
Peter Wemm
9516fbd6d9 Go back to having either static OR dynamic hints, with fallback
support.  Trying to fix the merged set where dynamic overrode
static was getting more and more complicated by the day.

This should fix the duplicate atkbd, psm, fd* etc in GENERIC.  (which
paniced the alpha, but not the i386)
2001-07-14 00:23:10 +00:00
Peter Wemm
2398f0cd1d Hints overhaul:
- Replace some very poorly thought out API hacks that should have been
  fixed a long while ago.
- Provide some much more flexible search functions (resource_find_*())
- Use strings for storage instead of an outgrowth of the rather
  inconvenient temporary ioconf table from config().  We already had a
  fallback to using strings before malloc/vm was running anyway.
2001-06-12 09:40:04 +00:00