2005-04-17 06:20:36 +08:00
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#ifndef _IEEE1394_TRANSACTIONS_H
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#define _IEEE1394_TRANSACTIONS_H
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2006-07-04 00:02:29 +08:00
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#include <linux/types.h>
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#include "ieee1394_types.h"
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struct hpsb_packet;
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struct hpsb_host;
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2005-04-17 06:20:36 +08:00
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int hpsb_get_tlabel(struct hpsb_packet *packet);
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void hpsb_free_tlabel(struct hpsb_packet *packet);
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struct hpsb_packet *hpsb_make_readpacket(struct hpsb_host *host, nodeid_t node,
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u64 addr, size_t length);
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struct hpsb_packet *hpsb_make_lockpacket(struct hpsb_host *host, nodeid_t node,
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2006-07-04 00:02:28 +08:00
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u64 addr, int extcode, quadlet_t *data,
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2005-04-17 06:20:36 +08:00
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quadlet_t arg);
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2006-07-04 00:02:28 +08:00
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struct hpsb_packet *hpsb_make_lock64packet(struct hpsb_host *host,
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nodeid_t node, u64 addr, int extcode,
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octlet_t *data, octlet_t arg);
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struct hpsb_packet *hpsb_make_phypacket(struct hpsb_host *host, quadlet_t data);
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struct hpsb_packet *hpsb_make_writepacket(struct hpsb_host *host,
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nodeid_t node, u64 addr,
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quadlet_t *buffer, size_t length);
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2005-04-17 06:20:36 +08:00
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struct hpsb_packet *hpsb_make_streampacket(struct hpsb_host *host, u8 *buffer,
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2006-07-04 00:02:28 +08:00
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int length, int channel, int tag,
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int sync);
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2005-04-17 06:20:36 +08:00
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int hpsb_packet_success(struct hpsb_packet *packet);
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int hpsb_read(struct hpsb_host *host, nodeid_t node, unsigned int generation,
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u64 addr, quadlet_t *buffer, size_t length);
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int hpsb_write(struct hpsb_host *host, nodeid_t node, unsigned int generation,
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u64 addr, quadlet_t *buffer, size_t length);
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firesat: copyrights, rename to firedtv, API conversions, fix remote control input
Combination of the following changes:
Tue, 26 Aug 2008 00:17:30 +0200 (CEST)
firedtv: fix remote control input
and update the scancode-to-keycode mapping to a current model. Per
default, various media key keycodes are emitted which closely match what
is printed on the remote. Userland can modify the mapping by means of
evdev ioctls. (Not tested.)
The old scancode-to-keycode mapping is left in the driver but cannot be
modified by ioctls. This preserves status quo for old remotes.
Tue, 26 Aug 2008 00:11:28 +0200 (CEST)
firedtv: replace tasklet by workqueue job
Non-atomic context is a lot nicer to work with.
Sun, 24 Aug 2008 23:30:00 +0200 (CEST)
firedtv: move some code back to ieee1394 core
Partially reverts "ieee1394: remove unused code" of Linux 2.6.25.
Sun, 24 Aug 2008 23:29:30 +0200 (CEST)
firedtv: replace semaphore by mutex
firesat->avc_sem and ->demux_sem have been used exactly like a mutex.
The only exception is the schedule_remotecontrol tasklet which did a
down_trylock in atomic context. This is not possible with
mutex_trylock; however the whole remote control related code is
non-functional anyway at the moment. This should be fixed eventually,
probably by turning the tasklet into a worqueue job.
Convert everything else from semaphore to mutex.
Also rewrite a few of the affected functions to unlock the mutex at a
single exit point, instead of in several branches.
Sun, 24 Aug 2008 23:28:45 +0200 (CEST)
firedtv: some header cleanups
Unify #ifndef/#define/#endif guards against multiple inclusion.
Drop extern keyword from function declarations.
Remove #include's into header files where struct declarations suffice.
Remove unused ohci1394 interface and related unused ieee1394 interfaces.
Add a few missing #include's and remove a few apparently obsolete ones.
Sort them alphabetically.
Sun, 24 Aug 2008 23:27:45 +0200 (CEST)
firedtv: nicer registration message and some initialization fixes
Print the correct name in dvb_register_adapter().
While we are at it, replace two switch cascades by one for loop, remove
a superfluous member of struct firesat and of two unused arguments of
AVCIdentifySubunit(), and fix bogus kfree's in firesat_dvbdev_init().
Tue, 26 Aug 2008 14:24:17 +0200 (CEST)
firesat: rename to firedtv
Suggested by Andreas Monitzer. Besides DVB-S/-S2 receivers, the driver
also supports DVB-C and DVB-T receivers, hence the previous project name
is too narrow now.
Not yet done: Rename source directory, files, types, variables...
Sun, 24 Aug 2008 23:26:23 +0200 (CEST)
firesat: add missing copyright notes
Reported by Andreas Monitzer and Christian Dolzer.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-08-26 06:17:30 +08:00
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int hpsb_lock(struct hpsb_host *host, nodeid_t node, unsigned int generation,
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u64 addr, int extcode, quadlet_t *data, quadlet_t arg);
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2005-04-17 06:20:36 +08:00
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ieee1394: shrink tlabel pools, remove tpool semaphores
This patch reduces the size of struct hpsb_host and also removes
semaphores from ieee1394_transactions.c. On i386, struct hpsb_host
shrinks from 10656 bytes to 6688 bytes. This is accomplished by
- using a single wait_queue for hpsb_get_tlabel instead of many
instances of semaphores,
- using a single lock to serialize access to all tlabel pools (the
protected code regions are small, i.e. lock contention very low),
- omitting the sysfs attribute tlabels_allocations.
Drawback: In the rare case that a process needs to sleep because all
transaction labels for the node are temporarily exhausted, it is also
woken up if a tlabel for a different node became free, checks for an
available tlabel, and is put to sleep again. The check is not costly
and the situation occurs extremely rarely. (Tlabels are typically
only exhausted if there was no context switch to the khpsbpkt thread
which recycles tlables.) Therefore the benefit of reduced tpool size
outweighs this drawback.
The sysfs attributes tlabels_free and tlabels_mask are not compiled
anymore unless CONFIG_IEEE1394_VERBOSEDEBUG is set.
The by far biggest member of struct hpsb_host, the struct csr_control
csr (5272 bytes on i386), is now placed at the end of struct hpsb_host.
Note, hpsb_get_tlabel calls the macro wait_event_interruptible with a
condition argument which has a side effect (allocation of a tlabel and
manipulation of the packet). This side effect happens only if the
condition is true. The patch relies on wait_event_interruptible not
evaluating the condition again after it became true.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-07-02 20:17:00 +08:00
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#ifdef HPSB_DEBUG_TLABELS
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extern spinlock_t hpsb_tlabel_lock;
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#endif
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2005-04-17 06:20:36 +08:00
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#endif /* _IEEE1394_TRANSACTIONS_H */
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