dahdi: add "tools_rootdir" module parameter

* Passed to udev as DAHDI_TOOLS_ROOTDIR environment variable
* Default is "/"
* Deprecates the parameter initdir:
  - Defaults to $DAHDI_TOOLS_ROOTDIR/usr/share/dahdi
  - If specified: taken relative to $DAHDI_TOOLS_ROOTDIR
  - Setting both parameters explicitly is prohibited.

Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Acked-by: Russ Meyerriecks <rmeyerriecks@digium.com>
Also send DAHDI_TOOLS_ROOTDIR with device events

Send the new DAHDI_TOOLS_ROOTDIR and existing DAHDI_INIT_DIR with udev
device events as well.

Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Acked-by: Russ Meyerriecks <rmeyerriecks@digium.com>
live_dahdi: load "dahdi" with tools_rootdir=$DESTDIR

Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Acked-by: Russ Meyerriecks <rmeyerriecks@digium.com>
remove udev rules: moved to dahdi-tools

* Removed xpp.rules
* Removed generation of dahdi.rules

Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Acked-by: Russ Meyerriecks <rmeyerriecks@digium.com>
sysfs: create symlink "ddev" to device of span

Create a "ddev" symlink from span's sysfs node to the one of its dahdi
device.

Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Acked-by: Russ Meyerriecks <rmeyerriecks@digium.com>
dahdi: Rename span 'master' as 'master_span'

* No functional changes.
* Rename the span 'master' to 'master_span' to avoid ambiguity with the
  'master' channel.

Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Acked-by: Russ Meyerriecks <rmeyerriecks@digium.com>
.gitignore: *.ko.unsigned

Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Acked-by: Russ Meyerriecks <rmeyerriecks@digium.com>
Rename "pinned spans" to "assigned spans"

Rename as terminology has changed. No change in kernel interface.

Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Acked-by: Russ Meyerriecks <rmeyerriecks@digium.com>
xpp: automatic dahdi_registration by default

* Now with pinned-spans, we can assure reliable ordering
sysfs: new driver attribute: master_span

* This changeset adds master_span as an attribute of the span's driver:
  /sys/bus/dahdi_spans/drivers/generic_lowlevel/master_span
* This is mainly used for debugging.
* Reading from it the master span number (or 0 if there is no master
  span).
* Writing a number to it, force specified span to be master
* Existing Alternatives:
  - grep "MASTER" from /proc/dahdi/*
  - cat /sys/bus/dahdi_spans/devices/span-*/is_sync_master

(Note: commit d8fe2af23de69ddc90bdbc676a5b7cb38a6301c3 is also Acked-By
Tzafrir Cohen <tzafrir.cohen@xorcom.com>)

Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Acked-by: Russ Meyerriecks <rmeyerriecks@digium.com>
Ignore some more firmware files

Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
oct612x: Make dependent on dahdi.ko

This change will ensure that the oct612x module is unloaded automatically when
/etc/init.d/dahdi stop is run.

Signed-off-by: Shaun Ruffell <sruffell@digium.com>
dahdi_dynamic: Create a span type for dynamic spans.

Fixes the following warning when loading the driver:

  dahdi: Warning: Span DYN/eth/eth1/00:50:c2:97:92:1d/1 didn't specify a spantype. Please fix driver!

The spantype is intended to be used by the auto configuration tools
(dahdi_genconf, pinned spans, etc..) but dynamic spans, since they are created
directly by dahdi_cfg, never take part in the pre-registration auto
configuration, therefore the span type was never used.

Signed-off-by: Shaun Ruffell <sruffell@digium.com>
wcaxx: Use startup/shutdown callbacks to protect access to channel registers.

Signed-off-by: Shaun Ruffell <sruffell@digium.com>
wctdm24xxp: Remove assigned callback.

For the spans exported by the wctdm24xxp, the channels are not going to change
after they are already registered.

This eliminates a problem when analog spans are unassigned/reassigned and the
not_ready goes negative, thereby causing many warnings in the kernel.

Signed-off-by: Shaun Ruffell <sruffell@digium.com>
dahdi: Remove "ddev" symlink before unregistering the span device.

This makes the order of operations for device removal symmetrical with those for
device addition. This change also eliminates the following warning when
unloading dahdi after dynamic spans have been created:

  ------------[ cut here ]------------
  WARNING: at /build/buildd/linux-3.2.0/fs/sysfs/inode.c:324 sysfs_hash_and_remove+0x92/0xa0()
  Hardware name: VirtualBox
  sysfs: can not remove 'ddev', no directory
  Modules linked in: dahdi_dynamic_loc(O-) dahdi_dynamic(O) dahdi(O) crc_ccitt
     hdlc_cisco hdlc vboxvideo(O) drm vboxsf(O) vesafb ppdev psmouse parport_pc
     serio_raw mac_hid vboxguest(O) nfsd nfs i2c_piix4 lockd fscache auth_rpcgss
     nfs_acl sunrpc ext2 lp parport e1000 [last unloaded: dahdi]
  Pid: 3533, comm: rmmod Tainted: G        W  O 3.2.0-56-generic-pae #86-Ubuntu
  Call Trace:
   [<c105ab42>] warn_slowpath_common+0x72/0xa0
   [<c11a7992>] ? sysfs_hash_and_remove+0x92/0xa0
   [<c11a7992>] ? sysfs_hash_and_remove+0x92/0xa0
   [<c105ac13>] warn_slowpath_fmt+0x33/0x40
   [<c11a7992>] sysfs_hash_and_remove+0x92/0xa0
   [<c1385427>] ? device_del+0x127/0x150
   [<c11a9bd0>] sysfs_remove_link+0x20/0x30
   [<d8a03fa3>] span_sysfs_remove+0xa3/0x170 [dahdi]
   [<c1036a88>] ? default_spin_lock_flags+0x8/0x10
   [<d89f7e5e>] _dahdi_unassign_span+0xae/0x210 [dahdi]
   [<c1053f6b>] ? __cond_resched+0x1b/0x30
   [<c15a9859>] ? _cond_resched+0x29/0x30
   [<d89f80a3>] dahdi_unregister_device+0xe3/0x190 [dahdi]
   [<d8936464>] dahdi_dynamic_unregister_driver+0x84/0x130 [dahdi_dynamic]
   [<d89284ed>] dahdi_dynamic_local_exit+0xd/0xb20 [dahdi_dynamic_loc]
   [<c1095995>] sys_delete_module+0x135/0x230
   [<c1110063>] ? pagetypeinfo_show.part.8+0x33/0x100
   [<c15b295f>] sysenter_do_call+0x12/0x28
  ---[ end trace b818e326720c8385 ]---

Signed-off-by: Shaun Ruffell <sruffell@digium.com>