There are some platforms where the DMA operation to the host does not complete
within the required 50us. When this happens some versions of the firmware will
issue a retry and increment the retry field in the descriptor status word.
Now if this driver is configured in DEBUG mode, the presence of these retries
will be printed to the kernel log as a potential troubleshooting aide.
Internal-Issue-ID: DAHDI-1087
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
There are error conditions that the firmware can detect but cannot recover from
without help from the driver. When firmware detects these conditions the
DESC_IO_ERROR bit will be set in the descriptor header to signal that the driver
should reset the TDM engine on the card. Since this is not due to failure of the
host to service the interrupt in time, it does not make sense to increase
latency when these conditions are detected.
Internal-Issue-ID: DAHDI-1087
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Without this change it's hard to see what is actually running on the card when
the firmware in the flash doesn't match the reported version. This is a
debugging aide.
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
This allows a .tar.gz file that is normally downloaded from the server to be
checked directly into a test branch. Now when the firmware is being installed,
it can be extracted from any present .tar.gz. Again, this is primarily to
simplify testing.
A nice side effect is that when going from a newer version to an older version,
any stale .bin files in the firmware directory will not be installed into
/lib/firmware, but instead the bin file from the *versioned* .tar.gz will always
be installed. This should reduce problems where you have to run "make
dist-clean" when reverting to an older version that has a firmware change.
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
This is intended to simplify the Makefile and move a large common part into a
subscript. The behavior is the same as it was before.
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
* We didn't handle proper E1/T1 transitions after device registration.
* Fix SPAN_REGISTERED(xpd):
It now checks for DAHDI_FLAGBIT_REGISTERED as well, as this flag is
set/clear by assign/unassign.
* From set_pri_proto():
- Always free/allocate channels
- Always call dahdi_init_span()
* Improve phonedev_cleanup() safety:
- NULL pointers after free.
- Zero number of channels at the end.
* Refactor channel allocation out of phonedev_init():
- Into phonedev_alloc_channels()
- Also called from xpd_init_span() to prevent duplicated logic.
- And called from set_pri_proto() to prevent our bug.
Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Commit 74e949c33a exported the module
variable dahdi.auto_assigned_spans. However this is not a good name.
This commit reverts the export and replaces it with a new function to
get the value of the variable.
Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Acked-by: Russ Meyerriecks <rmeyerriecks@digium.com>
A fix to 03b3ce1a10: use ktime_get_ts
instead of getnstimeofday to better handle system time changes.
(Shaun Ruffell)
Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Add a new sysfs attribute to dahdi_device: registration_time
* Records the time of the device's registration with DAHDI.
* Used by dahdi_auto_assign_compat to assign spans by device
registration order when backward compatibility needed.
Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Acked-by: Shaun Ruffell <sruffell@digium.com>
* Set it to 0 by default (as we use dahdi.auto_assign_spans now)
* Make it readonly (no runtime changes)
* Warn during startup if it was forced to 1
Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Acked-by: Russ Meyerriecks <rmeyerriecks@digium.com>
Instead, use the inverse of dahdi.auto_assign_spans value.
Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Acked-by: Russ Meyerriecks <rmeyerriecks@digium.com>
Allow certain older firmwares to delay the hard reset until a full power cycle.
This way we can "preload" newer firmware images, without requiring the user to
physically power off/on their machine.
Signed-off-by: Russ Meyerriecks <rmeyerriecks@digium.com>
Acked-by: Shaun Ruffell <sruffell@digium.com>
This makes the behavior of IRQ misses for these drivers behave the same as the
wcte12xp, wctdm24xxp, and wct4xxp drivers.
Previously irqmisses would never increase. The presence of underruns would still
show up in dmesg as latency bumps.
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Signed-off-by: Russ Meyerriecks <rmeyerriecks@digium.com>
These were left over from when the VPM callbacks depended on the different VPM
installed. On the wcte43x this is unnecessary.
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Signed-off-by: Russ Meyerriecks <rmeyerriecks@digium.com>
These were left over from when the VPM callbacks depended on the different VPM
installed. On the wcte43x this is unnecessary.
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Signed-off-by: Russ Meyerriecks <rmeyerriecks@digium.com>
This was a legacy compile time option that is no longer necessary with the new
series of cards.
Signed-off-by: Russ Meyerriecks <rmeyerriecks@digium.com>
struct dahdi_device.devicetype was set incorrectly in both drivers. This caused
the vpm module to not show up after the device name when reading this field
from a spanstat.
Reported-by: Charles Moye <cmoye@digium.com>
Signed-off-by: Russ Meyerriecks <rmeyerriecks@digium.com>
This fixes potential kernel panic due to accessing invalid memory if passing
invalid local span number to 'spantype' attribute via sysfs.
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
It was an oversight to prevent the wcte43x and wcte13xp drivers from using
Message Signaled interrupts during the switch to the wcxb library.
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Signed-off-by: Russ Meyerriecks <rmeyerriecks@digium.com>
wcte13xp now has a max_latency module parameter like the wcaxx and wcte43x
drivers.
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Signed-off-by: Russ Meyerriecks <rmeyerriecks@digium.com>
The wcxb library did not do actually use the max_latency member to limit the
maximum latency of the DMA engine.
Now it does.
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Signed-off-by: Russ Meyerriecks <rmeyerriecks@digium.com>
The infrastructure has been put in place in 2.8.0 for fully dynamic device and
span configuration. This will be the default mode in DAHDI-Linux 2.9.0.
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Acked-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Acked-by: Russ Meyerriecks <rmeyerriecks@digium.com>
Acked-by: Oron Peled <oron.peled@xorcom.com>
Previously this was in __dahdi_init_span(). The problem was that
__dahdi_init_span() was only called when a spans' line mode was being changed.
Therefore it was possible to unassign and resassign an analog span and leave it
stuck in the 'NOP' alarm state.
It also make the setting / clearing of DAHDI_ALARM_NOTOPEN symetrical about span
unassignment / assignment in addition to updating the alarm states on all the
channels on the span via the dahdi_alarm_notify() function.
This is a better version of commit 496f817773.
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
This fixes an issue that affects TDM410 modules when there is not a module
installed in the first port, but there is an FXO module installed in the third
port.
When scaning for QRV modules in the first port, the 3rd port will have the
'hook' struct.qrv set to 0xff. When a QRV module is not detected, that value
will be left, which then maps to an invalid state for both fxo.ring_state and
fxo.battery_state.
The result would be that FXO ports would fail to run the ring detector state
machine since it did not know what the current state was.
Now we'll just reset all the values in struct fxo or struct fxs to the expected
init state.
Internal-Issue-ID: DAHLIN-332
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
A bug introduced in v2.8.0 prevented the recover timing configuration from
being set properly on the hardware. This caused the card to never go into
recovered timing mode.
Signed-off-by: Russ Meyerriecks <rmeyerriecks@digium.com>
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
drv_attrs was fully removed from the bus structure in upstream commit
e18945b159a1cdbc031f1d3b0b7e515a33bdcbf7 which was merged into 3.13.
This is necessary to compile against linux kernel version 3.13.
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Acked-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
drv_attrs was fully removed from the bus structure in upstream commit
e18945b159a1cdbc031f1d3b0b7e515a33bdcbf7 which was merged into 3.13.
This is necessary to compile dahdi against linux version 3.13.
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
This resolves issues where, when using internal timing, the first channel of
span 3 has occassional corrupted data in transmit stream.
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
This extra read eliminates some problems with detecting certain S100M modules.
It is unclear at this time why it is necessary.
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
The spi master cur_transfer and cur_msg should only be changed under the
spin_lock for the master. The result is that if running user space tools, like
fxstest, that check registers on the modules, it's possible to have a message
that was not yet complete flagged as completed which would result in a bad read.
This does not affect "normal" operation of the wcaxx driver since interrupts are
not enabled during module detection, and during normal operation all access to
the resgisters is done in the context of the interrupt handler. This would only
be an issue if the interrupt handler was running and register accesses are tried
in user space context on an SMP system.
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
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>
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>
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>
* 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 d8fe2af23d 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>
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>
* 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>
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>
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>
* 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>
If the driver is loaded with vpmsupport=0, then it was possible to create a
deadlock situation since the call into __dahdi_ec_chunk might then try to grab
the channel lock while already holding the reglock.
The purpose of grabbing reglock in the DMA routines was to protect the channel
array, which can be changed when linemode is changing. So instead, we'll
completely mask off that interrupt line from all CPUs when potentially changing
the channel array.
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
