- 21 Oct, 2019 1 commit
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Kai-Heng Feng authored
A driver may want to know the existence of _PR3, to choose different runtime suspend behavior. A user will be add in next patch. This is mostly the same as nouveau_pr3_present(). Signed-off-by:
Kai-Heng Feng <kai.heng.feng@canonical.com> Acked-by:
Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20191018073848.14590-1-kai.heng.feng@canonical.comSigned-off-by:
Takashi Iwai <tiwai@suse.de>
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- 19 Oct, 2019 6 commits
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Takashi Sakamoto authored
Some devices have a quirk to postpone transmission of isoc packet for several dozen or hundred isoc cycles since configured to transmit. Furthermore, some devices have a quirk to transmit isoc packet with discontinued data of its header. In 1394 OHCI specification, software allows to start isoc context with certain isoc cycle. Linux firewire subsystem has kernel API to use it as well. This commit uses the functionality of 1394 OHCI controller to handle the quirks. At present, this feature is convenient to ALSA bebob and fireface driver. As a result, some devices can be safely handled, as long as I know: - MAudio FireWire solo - MAudio ProFire Lightbridge - MAudio FireWire 410 - Roland FA-66 Signed-off-by:
Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20191018061911.24909-7-o-takashi@sakamocchi.jpSigned-off-by:
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Takashi Sakamoto authored
This commit changes AMDTP domain to run on an IT context of 1394 OHCI as IRQ target. No hardware interrupt is scheduled for the other isoc contexts. All of the isoc context are processed in a callback for an isoc context of IRQ target. The IRQ target is automatically selected from a list of AMDTP streams, thus users of AMDTP domain should add an AMDTP stream for IT context at least. The reason to select IT context as IRQ target is that the IT context runs on local 1394 OHCI controller and it can be used as reliable, constant IRQ generator. On the other hand, IR context can include skip cycle according to isoc packet transferred by device. Signed-off-by:
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Takashi Sakamoto authored
The aim of AMDTP domain is to process several isoc context in the same time. However, current implementation is against this idea because it flushes each isoc context in the end of processing context callback. This commit cancels it. Signed-off-by:
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Takashi Sakamoto authored
An isoc context for AMDTP stream is flushed to queue packet by a call of pcm.ack. This commit extends this for AMDTP domain. Signed-off-by:
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Takashi Sakamoto authored
An isoc context for AMDTP stream is flushed to queue packet by a call of pcm.pointer. This commit extends this for AMDTP domain. Signed-off-by:
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Takashi Sakamoto authored
This commit is a preparation to handle several IR/IT contexts in the same domain by tasklet context for one of the IT context. Such IT context is stored to AMDTP domain structure as 'irq_target'. Signed-off-by:
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- 18 Oct, 2019 12 commits
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Takashi Sakamoto authored
In IEC 61883-1/6, one isoc packet can transfer events up to the value of syt interval. This comes from the interval of isoc cycle. As 1394 OHCI controller can generate hardware IRQ per isoc packet, the interval is calculated as 125 usec. In IEC 61883-1/6, two ways of transmission is described; blocking and non-blocking methods. In blocking method, the sequence of packet includes 'empty' or 'NODATA' packets which include no events. In non-blocking method, the number of events per packet is variable up to the syt interval. This commit uses double of the value of syt interval as minimum available size of PCM period due to the above protocol design. Signed-off-by:
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Takashi Sakamoto authored
Linux driver for 1394 OHCI controller voluntarily flushes isoc context when total size of accumulated context header reached PAGE_SIZE. This kicks tasklet for the isoc context. This is inconvenient to process runtime of PCM substream. This commit adds a restriction of the maximum size of PCM period to avoid this behaviour. Signed-off-by:
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Takashi Sakamoto authored
ALSA IEC 61883-1/6 packet streaming engine controls 1394 OHCI controller to generate hardware IRQ for fixed number of isochronous packets (=16) since its first commit. This commit allow the engine to generate it for variable period according to the number of event to handle. For outgoing stream, internal calculator is used to check the accumulated events. For incoming stream, the number of data block in the packet of stream is used to check the accumulated events. When it's unavailable, fixed number of packet roughly calculated in advance is used instead of event counting. Signed-off-by:
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Takashi Sakamoto authored
This commit allows ALSA fireface driver to share PCM buffer size for both capture and playback PCM substream. When AMDTP domain starts for one of the PCM substream, buffer size of the PCM substream is stores to AMDTP domain structure. Some AMDTP streams have already run with the buffer size when another PCM substream starts, therefore the PCM substream has a constraint to its buffer size. Signed-off-by:
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Takashi Sakamoto authored
This commit allows ALSA firewire-motu driver to share PCM buffer size for both capture and playback PCM substream. When AMDTP domain starts for one of the PCM substream, buffer size of the PCM substream is stores to AMDTP domain structure. Some AMDTP streams have already run with the buffer size when another PCM substream starts, therefore the PCM substream has a constraint to its buffer size. Signed-off-by:
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Takashi Sakamoto authored
This commit allows ALSA firewire-tascam driver to share PCM buffer size for both capture and playback PCM substream. When AMDTP domain starts for one of the PCM substream, buffer size of the PCM substream is stores to AMDTP domain structure. Some AMDTP streams have already run with the buffer size when another PCM substream starts, therefore the PCM substream has a constraint to its buffer size. Signed-off-by:
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Takashi Sakamoto authored
This commit allows ALSA firewire-digi00x driver to share PCM buffer size for both capture and playback PCM substream. When AMDTP domain starts for one of the PCM substream, buffer size of the PCM substream is stores to AMDTP domain structure. Some AMDTP streams have already run with the buffer size when another PCM substream starts, therefore the PCM substream has a constraint to its buffer size. Signed-off-by:
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Takashi Sakamoto authored
This commit allows ALSA dice driver to share PCM buffer size for both capture and playback PCM substream. When AMDTP domain starts for one of the PCM substream, buffer size of the PCM substream is stores to AMDTP domain structure. Some AMDTP streams have already run with the buffer size when another PCM substream starts, therefore the PCM substream has a constraint to its buffer size. Signed-off-by:
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Takashi Sakamoto authored
This commit allows ALSA oxfw driver to share PCM buffer size for both capture and playback PCM substream. When AMDTP domain starts for one of the PCM substream, buffer size of the PCM substream is stores to AMDTP domain structure. Some AMDTP streams have already run with the buffer size when another PCM substream starts, therefore the PCM substream has a constraint to its buffer size. Signed-off-by:
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Takashi Sakamoto authored
This commit allows ALSA fireworks driver to share PCM buffer size for both capture and playback PCM substream. When AMDTP domain starts for one of the PCM substream, buffer size of the PCM substream is stores to AMDTP domain structure. Some AMDTP streams have already run with the buffer size when another PCM substream starts, therefore the PCM substream has a constraint to its buffer size. Signed-off-by:
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Takashi Sakamoto authored
This commit allows ALSA bebob driver to share PCM buffer size for both capture and playback PCM substream. When AMDTP domain starts for one of the PCM substream, buffer size of the PCM substream is stores to AMDTP domain structure. Some AMDTP streams have already run with the buffer size when another PCM substream starts, therefore the PCM substream has a constraint to its buffer size. Signed-off-by:
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Takashi Sakamoto authored
The number of packets in packet buffer has been fixed number (=48) since first commit of ALSA IEC 61883-1/6 packet streaming engine. This commit allows the engine to use variable number of packets in the buffer. The size is calculated by a parameter in AMDTP domain structure surely to store the number of events in the packets of buffer. Although the value of parameter is expected to come from 'period size' parameter of PCM substream, at present 48 is still used. Signed-off-by:
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- 17 Oct, 2019 17 commits
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Takashi Sakamoto authored
In current implementation, when opening a PCM substream, it's needed to check whether the opposite PCM substream runs. This is to assign effectual constraints (e.g. sampling rate) to opened PCM substream. The number of PCM substreams on AMDTP streams in domain is recorded in own structure. Usage of this count is an alternative of the above check. This is better because the count is incremented in pcm.hw_params earlier than pcm.trigger. This commit replaces the check with the substream count and the value for the size of PCM period. Unlike the other drivers in ALSA firewire stack, no MIDI substream is multiplexed into AMDTP stream. I note that Fireface AMDTP protocol has a quirk that tx stream includes blank isochronous cycle. The packet for blank cycle is equivalent to empty or NODATA packet in IEC 61883-6, thus the protocol is similar to blocking transmission method of IEC 61883-6. On the other hand, rx stream adopts non-blocking transmission method. Although the difference of transmission method between tx/rx streams precisely brings different timing for a certain amount of events due to their different calculation for data blocks per packet, it's possible to approximate enough amount of events mostly has the same timing. Actually current ALSA IEC 61883-1/6 engine uses large amount of data blocks for each hardware IRQ (=16 packets). Signed-off-by:
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Takashi Sakamoto authored
In current implementation, when opening a PCM substream, it's needed to check whether the opposite PCM substream runs. This is to assign effectual constraints (e.g. sampling rate) to opened PCM substream. The number of PCM substreams and MIDI substreams on AMDTP streams in domain is recorded in own structure. Usage of this count is an alternative of the above check. This is better because the count is incremented in pcm.hw_params earlier than pcm.trigger. This idea has one issue because it's incremented for MIDI substreams as well. In current implementation, for a case that any MIDI substream run and a PCM substream is going to start, PCM application to start the PCM substream can decide hardware parameters by restart packet streaming. Just checking the substream count can brings regression. Now AMDTP domain structure has a member for the size of PCM period in PCM substream which starts AMDTP streams in domain. When the value has zero and the substream count is greater than 1, it means that any MIDI substream starts AMDTP streams in domain. Usage of the value can resolve the above issue. This commit replaces the check with the substream count and the value for the size of PCM period. Signed-off-by:
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Takashi Sakamoto authored
In current implementation, when opening a PCM substream, it's needed to check whether the opposite PCM substream runs. This is to assign effectual constraints (e.g. sampling rate) to opened PCM substream. The number of PCM substreams on AMDTP streams in domain is recorded in own structure. Usage of this count is an alternative of the above check. This is better because the count is incremented in pcm.hw_params earlier than pcm.trigger. This commit replaces the check with the substream count and the value for the size of PCM period. Unlike the other drivers in ALSA firewire stack, no MIDI substream is multiplexed into AMDTP stream. Signed-off-by:
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Takashi Sakamoto authored
In current implementation, when opening a PCM substream, it's needed to check whether the opposite PCM substream runs. This is to assign effectual constraints (e.g. sampling rate) to opened PCM substream. The number of PCM substreams and MIDI substreams on AMDTP streams in domain is recorded in own structure. Usage of this count is an alternative of the above check. This is better because the count is incremented in pcm.hw_params earlier than pcm.trigger. This idea has one issue because it's incremented for MIDI substreams as well. In current implementation, for a case that any MIDI substream run and a PCM substream is going to start, PCM application to start the PCM substream can decide hardware parameters by restart packet streaming. Just checking the substream count can brings regression. Now AMDTP domain structure has a member for the size of PCM period in PCM substream which starts AMDTP streams in domain. When the value has zero and the substream count is greater than 1, it means that any MIDI substream starts AMDTP streams in domain. Usage of the value can resolve the above issue. This commit replaces the check with the substream count and the value for the size of PCM period. I note that DOT AMDTP protocol has a quirk to use different transmission method of IEC 61883-6 for tx/rx streams; non-blocking in tx stream and blocking in rx stream. Although the difference of transmission method between tx/rx streams precisely brings different timing for a certain amount of events due to their different calculation for data blocks per packet, it's possible to approximate enough amount of events mostly has the same timing. Actually current ALSA IEC 61883-1/6 engine uses large amount of data blocks for each hardware IRQ (=16 packets). Signed-off-by:
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Takashi Sakamoto authored
In current implementation, when opening a PCM substream, it's needed to check whether the opposite PCM substream runs. This is to assign effectual constraints (e.g. sampling rate) to opened PCM substream. The number of PCM substreams and MIDI substreams on AMDTP streams in domain is recorded in own structure. Usage of this count is an alternative of the above check. This is better because the count is incremented in pcm.hw_params earlier than pcm.trigger. This idea has one issue because it's incremented for MIDI substreams as well. In current implementation, for a case that any MIDI substream run and a PCM substream is going to start, PCM application to start the PCM substream can decide hardware parameters by restart packet streaming. Just checking the substream count can brings regression. Now AMDTP domain structure has a member for the size of PCM period in PCM substream which starts AMDTP streams in domain. When the value has zero and the substream count is greater than 1, it means that any MIDI substream starts AMDTP streams in domain. Usage of the value can resolve the above issue. This commit replaces the check with the substream count and the value for the size of PCM period. Dice hardware has a quirk called as 'Dual Wire'. For a case of higher sampling transmission frequency, this commit performs calculations between the number of PCM frames and the number of events in AMDTP stream. Signed-off-by:
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Takashi Sakamoto authored
In current implementation, when opening a PCM substream, it's needed to check whether the opposite PCM substream runs. This is to assign effectual constraints (e.g. sampling rate) to opened PCM substream. The number of PCM substreams and MIDI substreams on AMDTP streams in domain is recorded in own structure. Usage of this count is an alternative of the above check. This is better because the count is incremented in pcm.hw_params earlier than pcm.trigger. This idea has one issue because it's incremented for MIDI substreams as well. In current implementation, for a case that any MIDI substream run and a PCM substream is going to start, PCM application to start the PCM substream can decide hardware parameters by restart packet streaming. Just checking the substream count can brings regression. Now AMDTP domain structure has a member for the size of PCM period in PCM substream which starts AMDTP streams in domain. When the value has zero and the substream count is greater than 1, it means that any MIDI substream starts AMDTP streams in domain. Usage of the value can resolve the above issue. This commit replaces the check with the substream count and the value for the size of PCM period. Signed-off-by:
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Takashi Sakamoto authored
In current implementation, when opening a PCM substream, it's needed to check whether the opposite PCM substream runs. This is to assign effectual constraints (e.g. sampling rate) to opened PCM substream. The number of PCM substreams and MIDI substreams on AMDTP streams in domain is recorded in own structure. Usage of this count is an alternative of the above check. This is better because the count is incremented in pcm.hw_params earlier than pcm.trigger. This idea has one issue because it's incremented for MIDI substreams as well. In current implementation, for a case that any MIDI substream run and a PCM substream is going to start, PCM application to start the PCM substream can decide hardware parameters by restart packet streaming. Just checking the substream count can brings regression. Now AMDTP domain structure has a member for the size of PCM period in PCM substream which starts AMDTP streams in domain. When the value has zero and the substream count is greater than 1, it means that any MIDI substream starts AMDTP streams in domain. Usage of the value can resolve the above issue. This commit replaces the check with the substream count and the value for the size of PCM period. Signed-off-by:
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Takashi Sakamoto authored
In current implementation, when opening a PCM substream, it's needed to check whether the opposite PCM substream runs. This is to assign effectual constraints (e.g. sampling rate) to opened PCM substream. The number of PCM substreams and MIDI substreams on AMDTP streams in domain is recorded in own structure. Usage of this count is an alternative of the above check. This is better because the count is incremented in pcm.hw_params earlier than pcm.trigger. This idea has one issue because it's incremented for MIDI substreams as well. In current implementation, for a case that any MIDI substream run and a PCM substream is going to start, PCM application to start the PCM substream can decide hardware parameters by restart packet streaming. Just checking the substream count can brings regression. Now AMDTP domain structure has a member for the size of PCM period in PCM substream which starts AMDTP streams in domain. When the value has zero and the substream count is greater than 1, it means that any MIDI substream starts AMDTP streams in domain. Usage of the value can resolve the above issue. This commit replaces the check with the substream count and the value for the size of PCM period. Signed-off-by:
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Takashi Sakamoto authored
This commit is a preparation to share the size of PCM period between PCM substreams on AMDTP streams in the same domain. At this time, the size of PCM period in PCM substream which starts AMDTP streams in the same domain is recorded. Signed-off-by:
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Takashi Sakamoto authored
This commit is a preparation to share the size of PCM period between PCM substreams on AMDTP streams in the same domain. At this time, the size of PCM period in PCM substream which starts AMDTP streams in the same domain is recorded. Signed-off-by:
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Takashi Sakamoto authored
This commit is a preparation to share the size of PCM period between PCM substreams on AMDTP streams in the same domain. At this time, the size of PCM period in PCM substream which starts AMDTP streams in the same domain is recorded. Signed-off-by:
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Takashi Sakamoto authored
This commit is a preparation to share the size of PCM period between PCM substreams on AMDTP streams in the same domain. At this time, the size of PCM period in PCM substream which starts AMDTP streams in the same domain is recorded. Signed-off-by:
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Takashi Sakamoto authored
This commit is a preparation to share the size of PCM period between PCM substreams on AMDTP streams in the same domain. At this time, the size of PCM period in PCM substream which starts AMDTP streams in the same domain is recorded. Signed-off-by:
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Takashi Sakamoto authored
This commit is a preparation to share the size of PCM period between PCM substreams on AMDTP streams in the same domain. At this time, the size of PCM period in PCM substream which starts AMDTP streams in the same domain is recorded. Signed-off-by:
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Takashi Sakamoto authored
This commit is a preparation to share the size of PCM period between PCM substreams on AMDTP streams in the same domain. At this time, the size of PCM period in PCM substream which starts AMDTP streams in the same domain is recorded. Signed-off-by:
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Takashi Sakamoto authored
This commit is a preparation to share the size of PCM period between PCM substreams on AMDTP streams in the same domain. At this time, the size of PCM period in PCM substream which starts AMDTP streams in the same domain is recorded. Signed-off-by:
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Takashi Sakamoto authored
In IEC 61883-6, it's called as 'event' what has presentation time represented by timestamp in CIP header. Although the ratio of the number of event against the number of data block is different depending on event data type represented by the specific field in CIP header, it's just one in the most cases supported by ALSA IEC 61883-1/6 engine. In 1394 OHCI specification, applications can schedule hardware IRQ by configuring descriptor with IRQ flag for packet against each isochronous cycle. For future commit, I use the hardware IRQ for isoc IT context to acknowledge the elapse of PCM period for both playback/capture directions on AMDTP streams in the same domain. This commit is a preparation for the above idea. This commit adds a member into AMDTP domain structure to record the number of PCM frames. Signed-off-by:
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- 07 Oct, 2019 1 commit
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Krzysztof Kozlowski authored
Adjust indentation from spaces to tab (+optional two spaces) as in coding style with command like: $ sed -e 's/^ /\t/' -i */Kconfig Signed-off-by:Krzysztof Kozlowski <krzk@kernel.org> Acked-by:
Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20191004144931.3851-1-krzk@kernel.orgSigned-off-by:
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- 06 Oct, 2019 3 commits
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Linus Torvalds authored
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Linus Torvalds authored
In commit 4ed28639 ("fs, elf: drop MAP_FIXED usage from elf_map") we changed elf to use MAP_FIXED_NOREPLACE instead of MAP_FIXED for the executable mappings. Then, people reported that it broke some binaries that had overlapping segments from the same file, and commit ad55eac7 ("elf: enforce MAP_FIXED on overlaying elf segments") re-instated MAP_FIXED for some overlaying elf segment cases. But only some - despite the summary line of that commit, it only did it when it also does a temporary brk vma for one obvious overlapping case. Now Russell King reports another overlapping case with old 32-bit x86 binaries, which doesn't trigger that limited case. End result: we had better just drop MAP_FIXED_NOREPLACE entirely, and go back to MAP_FIXED. Yes, it's a sign of old binaries generated with old tool-chains, but we do pride ourselves on not breaking existing setups. This still leaves MAP_FIXED_NOREPLACE in place for the load_elf_interp() and the old load_elf_library() use-cases, because nobody has reported breakage for those. Yet. Note that in all the cases seen so far, the overlapping elf sections seem to be just re-mapping of the same executable with different section attributes. We could possibly introduce a new MAP_FIXED_NOFILECHANGE flag or similar, which acts like NOREPLACE, but allows just remapping the same executable file using different protection flags. It's not clear that would make a huge difference to anything, but if people really hate that "elf remaps over previous maps" behavior, maybe at least a more limited form of remapping would alleviate some concerns. Alternatively, we should take a look at our elf_map() logic to see if we end up not mapping things properly the first time. In the meantime, this is the minimal "don't do that then" patch while people hopefully think about it more. Reported-by:
Russell King <linux@armlinux.org.uk> Fixes: 4ed28639 ("fs, elf: drop MAP_FIXED usage from elf_map") Fixes: ad55eac7 ("elf: enforce MAP_FIXED on overlaying elf segments") Cc: Michal Hocko <mhocko@suse.com> Cc: Kees Cook <keescook@chromium.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git.infradead.org/users/hch/dma-mappingLinus Torvalds authored
Pull dma-mapping regression fix from Christoph Hellwig: "Revert an incorret hunk from a patch that caused problems on various arm boards (Andrey Smirnov)" * tag 'dma-mapping-5.4-1' of git://git.infradead.org/users/hch/dma-mapping: dma-mapping: fix false positive warnings in dma_common_free_remap()
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