This implements asynchronous streams on juju, i.e. enables
raw1394_async_stream() and raw1394_start_async_stream() to work
with the new firewire kernel stack.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
In the firewire-cdev ABI v1, the kernel exported only the timestamp
of interrupt packets. libraw1394 estimated the cycle of all packets
between interrupt packets by continuously incrementing the cycle.
In v2 of the ABI, we can obtain an accurate timestamp of each packet
as provided by the OHCI controller. AFAIU, this is also what you got
from raw1394/ ohci1394.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This allows raw1394_bandwidth_modify() and raw1394_channel_modify()
to work on juju without write access to the IRM's character device file.
If either the build-time requirement of firewire-cdev header ABI >= v.2
or the runtime requirement of firewire-core ABI >= v.2 is not satisfied,
the code falls back to transactions to the IRM as before.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This implements broadcast transactions on juju.
(Broadcast transactions are write transactions to PHY ID 63,
not to be confused with isochronous or asynchronous streams.)
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Most of them do this already, only a few missed it.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Dan Dennedy <dan@dennedy.org>
On 10 Jan, David Moore wrote:
> On Sat, 2009-01-10 at 19:28 +0100, Stefan Richter wrote:
>> @@ -161,14 +160,16 @@ scan_devices(fw_handle_t handle)
...
>> + for (j = 0; j < i; j++)
>> + if (ports[j].card == get_info.card)
>> + continue;
>> +
>
> That continue statement doesn't do what you intended I think.
From: Stefan Richter <stefanr@s5r6.in-berlin.de>
Subject: [PATCH] Work without permission to access local node's /dev/fw*
Fix for juju backend:
libraw1394 required write permission to the character device file of
the local node(s) in order to enumerate cards and for a number of
other operations. This forced users to either run applications like
dvgrab and kino with elevated privileges, or to configure write
permission for all /dev/fw* or at least for local nodes' /dev/fw*.
We now use the first accessible file which was found for each card
for as many tasks as possible, instead of the local node's file.
This allows distributors or admins to implement stricter access
rights (default off, e.g. only on for AV/C and IIDC devices)
without sacrificing functionality of said class of applications.
Access to the local node is now only required by low-level tools
like gscanbus.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Dan Dennedy <dan@dennedy.org>
When performing a lock transaction (such as with fw_lock) under Juju, 4
bytes of the stack gets corrupted. This is because the lock transaction
has 8 bytes of data sent and 4 bytes received. Since the transaction
"length" is specified as 8, handle_device_event() copies 8 bytes into
the destination variable instead of the desired 4, and overflows into
the stack by 4 bytes.
This patch fixes the corruption by adding an extra "out_length" argument
to the send_request() function so that both in_length and out_length can
be specified separately.
Signed-off-by: Dan Dennedy <dan@dennedy.org>
Make iso start/stop/start sequences on the same handle, such as those used
by apps such as MythTV behave as expected. I can finally watch video off my
cable box over FireWire using MythTV w/the juju stack now. :)
Initially, seemed a one-liner might be the ticket (setting handle->iso.fd = -1
at the end of fw_iso_shutdown()), but that led to memory corruption and a
locked up system. What ultimately worked was essentially mimicking what the
old stack did to track iso state, and call fw_iso_stop() from
fw_iso_shutdown() as needed.
Nb: Only lightly tested with iso receive via MythTV, but its all fairly
straight-forward, I think.
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Dan Dennedy <dan@dennedy.org>
because they do the same.
We only may want a separate fw_bandwidth_modify() in the future when
firewire-core gains a special ioctl() for that.
(Not runtime-tested, but it looks good to me.)
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Dan Dennedy <dan@dennedy.org>
(juju)
Reported by Adrian Knoth: fw_channel_modify() was unable to allocate
some channels which were actually free.
http://marc.info/?l=linux1394-devel&t=122818128900002
This can be easily fixed by replacing fw_channel_modify() by
ieee1394_channel_modify() because this is highlevel enough to work with
Juju as well. We only may want a separate fw_channel_modify() in the
future when firewire-core gains a special ioctl() for that.
Also fix a documentation typo: raw1394_channel_modify() did not show up
in extracted API documentation due to a cut'n'paste typo in raw1394.h.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Dan Dennedy <dan@dennedy.org>
The buffer pointers were uninitialized, leading to segfault in memcpy.
Bug report and initial version of the fix by Adrian Knoth.
Signed-off-by: Dan Dennedy <dan@dennedy.org>
When using strncpy with the exact size of the destination string the
string may end up lacking null termination because the source string is
bigger then the destination.
Signed-off-by: Erik Hovland <erik@hovland.org>
Signed-off-by: Dan Dennedy <dan@dennedy.org>
When an unsigned type is assigned a signed value, the
negatived value is never seen.
Signed-off-by: Erik Hovland <erik@hovland.org>
Signed-off-by: Dan Dennedy <dan@dennedy.org>
Unsigned values do not return signed values when subtracted
and the right operand is larger then the left operand.
Signed-off-by: Dan Dennedy <dan@dennedy.org>
The ieee1394 version of raw1394_read_cycle_timer() fell over the cliff
in "First cut at integrating juju". This brings it back and adds a juju
version of it.
Also correct a typo in the inline documentation: s/get/read/
While trying to track down some crashes in kino, I found the following problems
with libraw1394:
* There is a DIR* leak in raw1394_set_port().
* Lots of data structures are not fully initialized when calling IEEE1394
ioctl()s. These cause valgrind errors (benign, as valgrind does not know
how to interpret all ioctls. However these also cause kino to crash in
libraw1394. I've added a bunch of memset()s to prevent this problem from
happening.
Forward-ported to libraw1394 git tree by Jarod Wilson.
This would be returned when the callback doesn't have enough data to
create a complete packet. This can occur when the xmit buffers are
bigger than the buffers supplying the data. It is not nescessarily an
error, because there are enough packets in the xmit buffer. This
response could give the data supplyer more time to fill the intermediate
buffer without losing any packets.
Signed-off-by: Pieter Palmers <pieterp@joow.be>
Signed-off-by: Dan Dennedy <dan@dennedy.org>
git-svn-id: svn://svn.linux1394.org/libraw1394/trunk@161 53a565d1-3bb7-0310-b661-cf11e63c67ab
is already mentioned in doc/libraw1394.sgml but an existing comment about
raw1394_iso_xmit_init may be misleading.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
git-svn-id: svn://svn.linux1394.org/libraw1394/trunk@158 53a565d1-3bb7-0310-b661-cf11e63c67ab
(addition of functions raw1394_arm_get_buf raw1394_arm_set_buf to get and set buffers of mapped address ranges)
git-svn-id: svn://svn.linux1394.org/libraw1394/trunk@137 53a565d1-3bb7-0310-b661-cf11e63c67ab
- changed return type of rawiso xmit/recv handlers from int to
enum raw1394_iso_disposition
- added an ioctl (RAW1394_ISO_QUEUE_ACTIVITY) to force an ISO_ACTIVITY
event into the queue. This is needed for handling RAW1394_ISO_DEFER,
to kick us out of the next read() instead of sleeping forever.
- removed references to "8-byte" isochronous header - this is an
OHCI-specific implementation detail
git-svn-id: svn://svn.linux1394.org/libraw1394/trunk@95 53a565d1-3bb7-0310-b661-cf11e63c67ab
Added sendiso and dumpiso programs in tools directory.
Added man pages for sendiso and dumpiso in doc directory.
git-svn-id: svn://svn.linux1394.org/libraw1394/trunk@66 53a565d1-3bb7-0310-b661-cf11e63c67ab
Function raw1394_update_generation() added for manual update.
Bus reset handler get current generation number as argument.
Default bus reset handler calls raw1394_update_generation().
git-svn-id: svn://svn.linux1394.org/libraw1394/trunk@60 53a565d1-3bb7-0310-b661-cf11e63c67ab
Stefan Richter
Dan Dennedy
David Moore
Jarod Wilson
Erik Hovland
Philippe Troin
Dan Dennedy
Dan Dennedy
ddennedy
bencollins
weihs
dmaas
anonymous
aeb