Commit Graph

240 Commits

Author SHA1 Message Date
peter
3b842d34e8 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
n_hibma
439729e891 Change calling of chained event handler from always after
the attach/detach to
1) MOD_LOAD before attach
2) MOD_UNLOAD after detach

The driver specific event handler can now be used to function as
driver specific init/deinit function (compare to device specific
init/deinit functions: attach & detach).
1999-08-16 21:44:14 +00:00
n_hibma
d6e14ff38e add debugging message in unregister_method 1999-08-14 13:32:25 +00:00
n_hibma
723d911b2c Minor spelling glitch 1999-08-14 13:20:04 +00:00
wpaul
a8658ef38f Grrrr. Fix a really lame bug that I tripped over while testing my miibus
stuff: unregister_methods() is horribly broken. The idea, if I'm not mistaken,
is that the refcount on a method is decremented, and only when it reaches
zero is the method freed. However desc->method is set to NULL unconditionally
regardless of the refcount, which means the method pointer is trashed the
first time the method is deallocated. The obvious detrimental effect is
that memory is leaked. The not so obvious effect is that when you call
unregister_method() the second time on the same method, you get a NULL
pointer dereference and a panic.

Now I can successfully unload network device drivers and the miibus module
without crashing the system.

*sigh*
1999-08-14 05:11:01 +00:00
peter
216b1d8c64 Make subr_bus.c actually compile with -DBUS_DEBUG 1999-08-11 22:55:39 +00:00
peter
cb7795e649 Zap some stray references to DRIVER_TYPE_foo in the BUS_DEBUG case, as
discovered by Bill Paul.
1999-08-11 22:05:17 +00:00
mdodd
371aa4e1b9 Fix a typo.
Back out a few lines that I haven't dealt with properly yet.

Snickered at by: Mike Smith
1999-07-29 01:51:49 +00:00
mdodd
1b3328c300 Alter the behavior of sys/kern/subr_bus.c:device_print_child()
- device_print_child() either lets the BUS_PRINT_CHILD
	  method produce the entire device announcement message or
	  it prints "foo0: not found\n"

Alter sys/kern/subr_bus.c:bus_generic_print_child() to take on
the previous behavior of device_print_child() (printing the
"foo0: <FooDevice 1.1>" bit of the announce message.)

Provide bus_print_child_header() and bus_print_child_footer()
to actually print the output for bus_generic_print_child().
These functions should be used whenever possible (unless you can
just use bus_generic_print_child())

The BUS_PRINT_CHILD method now returns int instead of void.

Modify everything else that defines or uses a BUS_PRINT_CHILD
method to comply with the above changes.

	- Devices are 'on' a bus, not 'at' it.
	- If a custom BUS_PRINT_CHILD method does the same thing
	  as bus_generic_print_child(), use bus_generic_print_child()
	- Use device_get_nameunit() instead of both
	  device_get_name() and device_get_unit()
	- All BUS_PRINT_CHILD methods return the number of
	  characters output.

Reviewed by: dfr, peter
1999-07-29 01:03:04 +00:00
dfr
49f6f0f9f0 This makes the in kernel printf routines conform to the documented
behavior of their userland counterparts with respect to return values.

Submitted by: Matthew N. Dodd <winter@jurai.net>
1999-07-24 09:34:12 +00:00
dfr
064ed23661 Add a hook for a bus to detect child devices which didn't find drivers.
This allows the bus to print an informative message about unknown devices.

Submitted by: Matthew N. Dodd <winter@jurai.net>
1999-07-11 13:42:37 +00:00
dfr
6aee1a4704 * Add a function devclass_create() which looks up the named devclass and
creates it if it doesn't exist.
* Rename resource_list_remove() to resource_list_delete() for consistency.
1999-05-30 10:27:11 +00:00
dfr
c10ae458eb * Change device_add_child_after() to device_add_child_ordered() which is
easier to use and more flexible.
* Change BUS_ADD_CHILD to take an order argument instead of a place.
* Define a partial ordering for isa devices so that sensitive devices are
  probed before non-sensitive ones.
1999-05-28 09:25:16 +00:00
dfr
6848e94c57 Fix an embarrasing typo in device_add_child_after(). I can't understand
how this hasn't caused problems before.

Submitted by: Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
1999-05-27 07:18:41 +00:00
dfr
cd70cc4f2c Add some helper functions to make it easier to write a driver for a bus
which needs to manage resources for its children.
1999-05-22 14:57:15 +00:00
peter
90370ee007 Add seatbelt like in previous function.. 1999-05-22 09:52:21 +00:00
dfr
fe2f746412 Silently return NULL from devclass_get_device if dc == NULL. The caller
should be handling NULL returns already.

Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
1999-05-21 08:23:58 +00:00
dfr
8a8a702dc2 * Define a new static method DEVICE_IDENTIFY which is called to add device
instances to a parent bus.
* Define a new method BUS_ADD_CHILD which can be called from DEVICE_IDENTIFY
  to add new instances.
* Add a generic implementation of DEVICE_PROBE which calls DEVICE_IDENTIFY
  for each driver attached to the parent's devclass.
* Move the hint-based isa probe from the isa driver to a new isahint driver
  which can be shared between i386 and alpha.
1999-05-14 11:22:47 +00:00
dfr
31a93d7bad Adjust method dispatch to ensure that default methods are called properly. 1999-05-14 09:13:43 +00:00
dfr
1a3fdb21c5 * Augment the interface language to allow arbitrary C code to be 'passed
through' to the C compiler.
* Allow the interface to specify a default implementation for methods.
* Allow 'static' methods which are not device specific.
* Add a simple scheme for probe routines to return a priority value. To
  make life simple, priority values are negative numbers (positive numbers
  are standard errno codes) with zero being the highest priority. The
  driver which returns the highest priority will be chosen for the device.
1999-05-10 17:06:14 +00:00
dfr
e4989c23fe Move the declaration of the interrupt type from the driver structure
to the BUS_SETUP_INTR call.
1999-05-08 21:59:43 +00:00
peter
150774fc3c Change resource_set_*() to be more useful. BTW; resource_find() is a
bit odd, it looks like the wildcard stuff isn't right.
1999-05-08 18:08:59 +00:00
peter
336f21c48d GC some stray debugging printf()s... 1999-04-19 19:39:08 +00:00
peter
087d4857e5 Bring the 'new-bus' to the i386. This extensively changes the way the
i386 platform boots, it is no longer ISA-centric, and is fully dynamic.
Most old drivers compile and run without modification via 'compatability
shims' to enable a smoother transition.  eisa, isapnp and pccard* are
not yet using the new resource manager.  Once fully converted, all drivers
will be loadable, including PCI and ISA.

(Some other changes appear to have snuck in, including a port of Soren's
 ATA driver to the Alpha.  Soren, back this out if you need to.)

This is a checkpoint of work-in-progress, but is quite functional.

The bulk of the work was done over the last few years by Doug Rabson and
Garrett Wollman.

Approved by:	core
1999-04-16 21:22:55 +00:00
dfr
e92e9c75bf Add some useful functions to the device framework:
* bus_setup_intr() as a wrapper for BUS_SETUP_INTR
* bus_teardown_intr() as a wrapper for BUS_TEARDOWN_INTR
* device_get_nameunit() which returns e.g. "foo0" for name "foo" and unit 0.
* device_set_desc_copy() malloc a copy of the description string.
* device_quiet(), device_is_quiet(), device_verbose() suppress probe message.

Add one method to the BUS interface, BUS_CHILD_DETACHED() which is called
after the child has been detached to allow the bus to clean up any memory
which it allocated on behalf of the child.

I also fixed a bug which corrupted the list of drivers in a devclass if
a driver was added to more than one devclass.
1999-03-29 08:54:20 +00:00
dillon
a40e0249d4 Fix warnings in preparation for adding -Wall -Wcast-qual to the
kernel compile
1999-01-27 21:50:00 +00:00
dfr
827cdaabc3 A few small improvements to the bus code:
* A function device_printf() to make pretty-printing driver messages easier.
* A function device_get_children() to query the children of a device.
* Generic implementations of BUS_ALLOC_RESOURCE and BUS_RELEASE_RESOURCE.
* Change bus_generic_print_child() so that it is actually useful.
1999-01-16 17:44:09 +00:00
n_hibma
1ed579254d Remove warning 1999-01-10 22:04:05 +00:00
n_hibma
1935e16458 When no driver was found for a device, the message 'not probed' appeared
This is odd, especially in the case of USB where the driver is found
in several tries: vendor specific, class specific, interface specific.
The mouse driver is found at the interface specific level...
Reviewed by:	Doug Rabson (dfr@freebsd.org)
1998-12-12 11:30:04 +00:00
dfr
3d34322c0b A couple of minor sanity checks.
Submitted by: Nick Hibma <nick.hibma@jrc.it>
1998-11-15 18:11:21 +00:00
wollman
2f0e3424ed My changes to the new device interface:
- Interface wth the new resource manager.
	- Allow for multiple drivers implementing a single devclass.
	- Remove ordering dependencies between header files.
	- Style cleanup.
	- Add DEVICE_SUSPEND and DEVICE_RESUME methods.
	- Move to a single-phase interrupt setup scheme.

Kernel builds on the Alpha are brken until Doug gets a chance to incorporate
these changes on that side.

Agreed to in principle by: dfr
1998-11-14 21:58:51 +00:00
dfr
bd083c1ec4 A couple of fixes to device_delete_child() to delete all children of
the device and to free the device which is being deleted (not its
parent - oops).

Submitted by: Nick Hibma <nick.hibma@jrc.it>
1998-11-13 09:39:37 +00:00
dfr
779bdcf310 Lots of debugging code and some bugfixes.
Submitted by: Nick Hibma <nick.hibma@jrc.it>
1998-10-27 09:21:43 +00:00
phk
13c66194f4 Nitpicking and dusting performed on a train. Removes trivial warnings
about unused variables, labels and other lint.
1998-10-25 17:44:59 +00:00
dfr
94703cd86c Don't call DEVICE_DETACH directly, always go through the device_detach()
wrapper which checks to make sure the device isn't currently open.
1998-10-03 08:55:29 +00:00
bde
ec3c90cf78 Fixed recently perpetrated printf format errors. 1998-09-05 13:24:39 +00:00
dfr
a573865db3 Add some very simple support for a compiled in (from config(8)) resource
database.
1998-07-22 08:35:52 +00:00
dfr
33ad41510d Change interrupt api to be closer to intr_create/intr_connect. 1998-07-12 16:20:52 +00:00
dfr
dc295ed278 Major changes to the generic device framework for FreeBSD/alpha:
* Eliminate bus_t and make it possible for all devices to have
  attached children.

* Support dynamically extendable interfaces for drivers to replace
  both the function pointers in driver_t and bus_ops_t (which has been
  removed entirely.  Two system defined interfaces have been defined,
  'device' which is mandatory for all devices and 'bus' which is
  recommended for all devices which support attached children.

* In addition, the alpha port defines two simple interfaces 'clock'
  for attaching various real time clocks to the system and 'mcclock'
  for the many different variations of mc146818 clocks which can be
  attached to different alpha platforms.  This eliminates two more
  function pointer tables in favour of the generic method dispatch
  system provided by the device framework.

Future device interfaces may include:

* cdev and bdev interfaces for devfs to use in replacement for specfs
  and the fixed interfaces bdevsw and cdevsw.

* scsi interface to replace struct scsi_adapter (not sure how this
  works in CAM but I imagine there is something similar there).

* various tailored interfaces for different bus types such as pci,
  isa, pccard etc.
1998-06-14 13:46:10 +00:00
dfr
224577d6cf Add initial support for the FreeBSD/alpha kernel. This is very much a
work in progress and has never booted a real machine.  Initial
development and testing was done using SimOS (see
http://simos.stanford.edu for details).  On the SimOS simulator, this
port successfully reaches single-user mode and has been tested with
loads as high as one copy of /bin/ls :-).

Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00