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2022-02-15dmaengine: shdma: Fix runtime PM imbalance on errorYongzhi Liu1-1/+3
pm_runtime_get_() increments the runtime PM usage counter even when it returns an error code, thus a matching decrement is needed on the error handling path to keep the counter balanced. Signed-off-by: Yongzhi Liu <lyz_cs@pku.edu.cn> Link: https://lore.kernel.org/r/1642311296-87020-1-git-send-email-lyz_cs@pku.edu.cn Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-15dmaengine: sh: rcar-dmac: Check for error num after dma_set_max_seg_sizeJiasheng Jiang1-1/+4
As the possible failure of the dma_set_max_seg_size(), it should be better to check the return value of the dma_set_max_seg_size(). Fixes: 97d49c59e219 ("dmaengine: rcar-dmac: set scatter/gather max segment size") Reported-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20220111011239.452837-1-jiasheng@iscas.ac.cn Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-15dmaengine: stm32-dmamux: Fix PM disable depth imbalance in stm32_dmamux_probeMiaoqian Lin1-1/+3
The pm_runtime_enable will increase power disable depth. If the probe fails, we should use pm_runtime_disable() to balance pm_runtime_enable(). Fixes: 4f3ceca254e0 ("dmaengine: stm32-dmamux: Add PM Runtime support") Signed-off-by: Miaoqian Lin <linmq006@gmail.com> Reviewed-by: Amelie Delaunay <amelie.delaunay@foss.st.com> Link: https://lore.kernel.org/r/20220108085336.11992-1-linmq006@gmail.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-15dmaengine: sh: rcar-dmac: Check for error num after setting maskJiasheng Jiang1-1/+3
Because of the possible failure of the dma_supported(), the dma_set_mask_and_coherent() may return error num. Therefore, it should be better to check it and return the error if fails. Fixes: dc312349e875 ("dmaengine: rcar-dmac: Widen DMA mask to 40 bits") Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20220106030939.2644320-1-jiasheng@iscas.ac.cn Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-15dmaengine: at_xdmac: Fix missing unlock in at_xdmac_tasklet()Yang Yingliang1-1/+3
Add the missing unlock before return from at_xdmac_tasklet(). Fixes: e77e561925df ("dmaengine: at_xdmac: Fix race over irq_status") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20220107024047.1051915-1-yangyingliang@huawei.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-02-15dmaengine: ptdma: Fix the error handling path in pt_core_init()Christophe JAILLET1-8/+9
In order to free resources correctly in the error handling path of pt_core_init(), 2 goto's have to be switched. Otherwise, some resources will leak and we will try to release things that have not been allocated yet. Also move a dev_err() to a place where it is more meaningful. Fixes: fa5d823b16a9 ("dmaengine: ptdma: Initial driver for the AMD PTDMA") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Acked-by: Sanjay R Mehta <sanju.mehta@amd.com> Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/41a963a35173f89c874f5c44df5530dc09fea8da.1644044244.git.christophe.jaillet@wanadoo.fr Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-18Merge tag 'dmaengine-5.17-rc1' of ↵Linus Torvalds26-573/+1236
git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine Pull dmaengine updates from Vinod Koul: "A bunch of new support and few updates to drivers: New support: - DMA_MEMCPY_SG support is bought back as we have a user in Xilinx driver - Support for TI J721S2 SoC in k3-udma driver - Support for Ingenic MDMA and BDMA in the JZ4760 - Support for Renesas r8a779f0 dmac Updates: - We are finally getting rid of slave_id, so this brings in the changes across tree for that - updates for idxd driver - at_xdmac driver cleanup" * tag 'dmaengine-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (60 commits) dt-bindings: dma-controller: Split interrupt fields in example dmaengine: pch_dma: Remove usage of the deprecated "pci-dma-compat.h" API dmaengine: at_xdmac: Fix race over irq_status dmaengine: at_xdmac: Remove a level of indentation in at_xdmac_tasklet() dmaengine: at_xdmac: Fix at_xdmac_lld struct definition dmaengine: at_xdmac: Fix lld view setting dmaengine: at_xdmac: Remove a level of indentation in at_xdmac_advance_work() dmaengine: at_xdmac: Fix concurrency over xfers_list dmaengine: at_xdmac: Move the free desc to the tail of the desc list dmaengine: at_xdmac: Fix race for the tx desc callback dmaengine: at_xdmac: Fix concurrency over chan's completed_cookie dmaengine: at_xdmac: Print debug message after realeasing the lock dmaengine: at_xdmac: Start transfer for cyclic channels in issue_pending dmaengine: at_xdmac: Don't start transactions at tx_submit level dmaengine: idxd: deprecate token sysfs attributes for read buffers dmaengine: idxd: change bandwidth token to read buffers dmaengine: idxd: fix wq settings post wq disable dmaengine: idxd: change MSIX allocation based on per wq activation dmaengine: idxd: fix descriptor flushing locking dmaengine: idxd: embed irq_entry in idxd_wq struct ...
2022-01-14Merge tag 'sound-5.17-rc1' of ↵Linus Torvalds7-43/+60
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound updates from Takashi Iwai: "It's a relatively calm development cycle, but still lots of updates in the driver side like Intel SOF. Below are some highlights: ALSA / ASoC core: - A new kselftest for ALSA control API - PCM NO_REWINDS support - Potential race fixes around control removals - Unify x86 SG-buffer memory allocation code - Cleanups and race fixes for ASoC DPCM locking ASoC: - Refinements and cleanups around the delay() APIs - Wider use of dev_err_probe(). - Continuing cleanups and improvements to the SOF code - Support for pin switches in simple-card derived cards - Support for AMD Renoir ACP, Asahi Kasei Microdevices AKM4375, Intel systems using NAU8825 and MAX98390, Mediatek MT8915, nVidia Tegra20 S/PDIF, Qualcomm systems using ALC5682I-VS and Texas Instruments TLV320ADC3xxx HD-audio / USB-audio: - Fix deadlock at HD-audio codec unbinding - Fixes for Tegra194 HD-audio, new HDA support for CS35L41 codec - Quirks for Lenovo and HP machines, Gigabyte mobo, Bose device Misc: - Fix virmidi drain behavior Note that the merge of CS35L41 codec support is still half-baked, and at least one ACPI change is missing. Although this won't hinder the kernel build itself, we're going to catch up before RC1" * tag 'sound-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (415 commits) ALSA: hda: intel-dsp-config: reorder the config table ALSA: hda: intel-dsp-config: add JasperLake support ALSA: hda: cs35l41: fix double free on error in probe() ALSA: hda: Fix dependencies of CS35L41 on SPI/I2C buses ALSA: hda: Fix dependency on ASoC cs35l41 codec ASoC: cs35l41: Add support for hibernate memory retention mode ASoC: cs35l41: Update handling of test key registers ALSA: intel_hdmi: Check for error num after setting mask ASoC: wcd9335: Keep a RX port value for each SLIM RX mux ASoC: amd: acp: acp-mach: Change default RT1019 amp dev id ALSA: virmidi: Remove duplicated code ALSA: seq: virmidi: Add a drain operation ASoC: topology: Fix typo ASoC: fsl_asrc: refine the check of available clock divider ASoC: Intel: bytcr_rt5640: Add support for external GPIO jack-detect ASoC: Intel: bytcr_rt5640: Support retrieving the codec IRQ from the AMCR0F28 ACPI dev ASoC: rt5640: Add support for boards with an external jack-detect GPIO ASoC: rt5640: Allow snd_soc_component_set_jack() to override the codec IRQ ASoC: rt5640: Change jack_work to a delayed_work ASoC: rt5640: Fix possible NULL pointer deref on resume ...
2022-01-13Merge tag 'irq-msi-2022-01-13' of ↵Linus Torvalds4-48/+32
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull MSI irq updates from Thomas Gleixner: "Rework of the MSI interrupt infrastructure. This is a treewide cleanup and consolidation of MSI interrupt handling in preparation for further changes in this area which are necessary to: - address existing shortcomings in the VFIO area - support the upcoming Interrupt Message Store functionality which decouples the message store from the PCI config/MMIO space" * tag 'irq-msi-2022-01-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (94 commits) genirq/msi: Populate sysfs entry only once PCI/MSI: Unbreak pci_irq_get_affinity() genirq/msi: Convert storage to xarray genirq/msi: Simplify sysfs handling genirq/msi: Add abuse prevention comment to msi header genirq/msi: Mop up old interfaces genirq/msi: Convert to new functions genirq/msi: Make interrupt allocation less convoluted platform-msi: Simplify platform device MSI code platform-msi: Let core code handle MSI descriptors bus: fsl-mc-msi: Simplify MSI descriptor handling soc: ti: ti_sci_inta_msi: Remove ti_sci_inta_msi_domain_free_irqs() soc: ti: ti_sci_inta_msi: Rework MSI descriptor allocation NTB/msi: Convert to msi_on_each_desc() PCI: hv: Rework MSI handling powerpc/mpic_u3msi: Use msi_for_each-desc() powerpc/fsl_msi: Use msi_for_each_desc() powerpc/pasemi/msi: Convert to msi_on_each_dec() powerpc/cell/axon_msi: Convert to msi_on_each_desc() powerpc/4xx/hsta: Rework MSI handling ...
2022-01-08dmaengine: pch_dma: Remove usage of the deprecated "pci-dma-compat.h" APIChristophe JAILLET1-1/+1
In [1], Christoph Hellwig has proposed to remove the wrappers in include/linux/pci-dma-compat.h. Some reasons why this API should be removed have been given by Julia Lawall in [2]. A coccinelle script has been used to perform the needed transformation. It can be found in [3]. [1]: https://lore.kernel.org/kernel-janitors/20200421081257.GA131897@infradead.org/ [2]: https://lore.kernel.org/kernel-janitors/alpine.DEB.2.22.394.2007120902170.2424@hadrien/ [3]: https://lore.kernel.org/kernel-janitors/20200716192821.321233-1-christophe.jaillet@wanadoo.fr/ Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/b88f25f3d07be92dd75494dc129a85619afb1366.1641500561.git.christophe.jaillet@wanadoo.fr Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-05dmaengine: at_xdmac: Fix race over irq_statusTudor Ambarus1-8/+8
Tasklets run with interrupts enabled, so we need to protect atchan->irq_status with spin_lock_irq() otherwise the tasklet can be interrupted by the IRQ that modifies irq_status. Move the dev_dbg that prints the irq_status in at_xdmac_handle_cyclic() and lower in at_xdmac_tasklet() where the IRQ is disabled. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20211215110115.191749-13-tudor.ambarus@microchip.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-05dmaengine: at_xdmac: Remove a level of indentation in at_xdmac_tasklet()Tudor Ambarus1-36/+34
Apart of making the code easier to read, this patch is a prerequisite for a functional change: tasklets run with interrupts enabled, so we need to protect atchan->irq_status with spin_lock_irq() otherwise the tasklet can be interrupted by the IRQ that modifies irq_status. atchan->irq_status will be protected in a further patch. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20211215110115.191749-12-tudor.ambarus@microchip.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-05dmaengine: at_xdmac: Fix at_xdmac_lld struct definitionTudor Ambarus1-9/+9
The hardware channel next descriptor view structure contains just fields of 32 bits, while dma_addr_t can be of type u64 or u32 depending on CONFIG_ARCH_DMA_ADDR_T_64BIT. Force u32 to comply with what the hardware expects. Fixes: e1f7c9eee707 ("dmaengine: at_xdmac: creation of the atmel eXtended DMA Controller driver") Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20211215110115.191749-11-tudor.ambarus@microchip.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-05dmaengine: at_xdmac: Fix lld view settingTudor Ambarus1-1/+3
AT_XDMAC_CNDC_NDVIEW_NDV3 was set even for AT_XDMAC_MBR_UBC_NDV2, because of the wrong bit handling. Fix it. Fixes: ee0fe35c8dcd ("dmaengine: xdmac: Handle descriptor's view 3 registers") Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20211215110115.191749-10-tudor.ambarus@microchip.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-05dmaengine: at_xdmac: Remove a level of indentation in at_xdmac_advance_work()Tudor Ambarus1-8/+8
It's easier to read code with fewer levels of indentation, remove a level of indentation in at_xdmac_advance_work() if (!foo() & !bar()) { } was replaced by: if (foo() || bar()) return; Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20211215110115.191749-9-tudor.ambarus@microchip.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-05dmaengine: at_xdmac: Fix concurrency over xfers_listTudor Ambarus1-7/+10
Since tx_submit can be called from a hard IRQ, xfers_list must be protected with a lock to avoid concurency on the list's elements. Since at_xdmac_handle_cyclic() is called from a tasklet, spin_lock_irq is enough to protect from a hard IRQ. Fixes: e1f7c9eee707 ("dmaengine: at_xdmac: creation of the atmel eXtended DMA Controller driver") Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20211215110115.191749-8-tudor.ambarus@microchip.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-05dmaengine: at_xdmac: Move the free desc to the tail of the desc listTudor Ambarus1-9/+14
Move the free desc to the tail of the list, so that the sequence of descriptors is more track-able in case of debug. One would know which descriptor should come next and could easier catch concurrency over descriptors for example. virt-dma uses list_splice_tail_init() as well, follow the core driver. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20211215110115.191749-7-tudor.ambarus@microchip.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-05dmaengine: at_xdmac: Fix race for the tx desc callbackTudor Ambarus1-17/+8
The transfer descriptors were wrongly moved to the free descriptors list before calling the tx desc callback. As the DMA engine drivers drop any locks before calling the callback function, txd could be taken again, resulting in its callback called prematurely. Fix the race for the tx desc callback by moving the xfer desc into the free desc list after the callback is invoked. Fixes: e1f7c9eee707 ("dmaengine: at_xdmac: creation of the atmel eXtended DMA Controller driver") Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20211215110115.191749-6-tudor.ambarus@microchip.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-05dmaengine: at_xdmac: Fix concurrency over chan's completed_cookieTudor Ambarus1-2/+1
Caller of dma_cookie_complete is expected to hold a lock to prevent concurrency over the channel's completed cookie marker. Call dma_cookie_complete() with the lock held. Fixes: e1f7c9eee707 ("dmaengine: at_xdmac: creation of the atmel eXtended DMA Controller driver") Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20211215110115.191749-5-tudor.ambarus@microchip.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-05dmaengine: at_xdmac: Print debug message after realeasing the lockTudor Ambarus1-2/+4
It is desirable to do the prints without the lock held if possible, so move the print after the lock is released. Fixes: e1f7c9eee707 ("dmaengine: at_xdmac: creation of the atmel eXtended DMA Controller driver") Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20211215110115.191749-4-tudor.ambarus@microchip.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-05dmaengine: at_xdmac: Start transfer for cyclic channels in issue_pendingTudor Ambarus1-5/+3
Cyclic channels must too call issue_pending in order to start a transfer. Start the transfer in issue_pending regardless of the type of channel. This wrongly worked before, because in the past the transfer was started at tx_submit level when only a desc in the transfer list. Fixes: e1f7c9eee707 ("dmaengine: at_xdmac: creation of the atmel eXtended DMA Controller driver") Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20211215110115.191749-3-tudor.ambarus@microchip.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-05dmaengine: at_xdmac: Don't start transactions at tx_submit levelTudor Ambarus1-6/+0
tx_submit is supposed to push the current transaction descriptor to a pending queue, waiting for issue_pending() to be called. issue_pending() must start the transfer, not tx_submit(), thus remove at_xdmac_start_xfer() from at_xdmac_tx_submit(). Clients of at_xdmac that assume that tx_submit() starts the transfer must be updated and call dma_async_issue_pending() if they miss to call it (one example is atmel_serial). As the at_xdmac_start_xfer() is now called only from at_xdmac_advance_work() when !at_xdmac_chan_is_enabled(), the at_xdmac_chan_is_enabled() check is no longer needed in at_xdmac_start_xfer(), thus remove it. Fixes: e1f7c9eee707 ("dmaengine: at_xdmac: creation of the atmel eXtended DMA Controller driver") Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20211215110115.191749-2-tudor.ambarus@microchip.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-05dmaengine: idxd: deprecate token sysfs attributes for read buffersDave Jiang1-27/+118
The following sysfs attributes will be obsolete due to the name change of tokens to read buffers: max_tokens token_limit group/tokens_allowed group/tokens_reserved group/use_token_limit Create new entries and have old entry print warning of deprecation. New attributes to replace the token ones: max_read_buffers read_buffer_limit group/read_buffers_allowed group/read_buffers_reserved group/use_read_buffer_limit Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/163951339488.2988321.2424012059911316373.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-05dmaengine: idxd: change bandwidth token to read buffersDave Jiang5-50/+49
DSA spec v1.2 has changed the term of "bandwidth tokens" to "read buffers" in order to make the concept clearer. Deprecate bandwidth token naming in the driver and convert to read buffers in order to match with the spec and reduce confusion when reading the spec. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/163951338932.2988321.6162640806935567317.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-05dmaengine: idxd: fix wq settings post wq disableDave Jiang1-2/+10
By the spec, wq size and group association is not changeable unless device is disabled. Exclude clearing the shadow copy on wq disable/reset. This allows wq type to be changed after disable to be re-enabled. Move the size and group association to its own cleanup and only call it during device disable. Fixes: 0dcfe41e9a4c ("dmanegine: idxd: cleanup all device related bits after disabling device") Reported-by: Lucas Van <lucas.van@intel.com> Tested-by: Lucas Van <lucas.van@intel.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/163951291732.2987775.13576571320501115257.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-05dmaengine: idxd: change MSIX allocation based on per wq activationDave Jiang5-185/+131
Change the driver where WQ interrupt is requested only when wq is being enabled. This new scheme set things up so that request_threaded_irq() is only called when a kernel wq type is being enabled. This also sets up for future interrupt request where different interrupt handler such as wq occupancy interrupt can be setup instead of the wq completion interrupt. Not calling request_irq() until the WQ actually needs an irq also prevents wasting of CPU irq vectors on x86 systems, which is a limited resource. idxd_flush_pending_descs() is moved to device.c since descriptor flushing is now part of wq disable rather than shutdown(). Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/163942149487.2412839.6691222855803875848.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-05dmaengine: idxd: fix descriptor flushing lockingDave Jiang1-14/+15
The descriptor flushing for shutdown is not holding the irq_entry list lock. If there's ongoing interrupt completion handling, this can corrupt the list. Add locking to protect list walking. Also refactor the code so it's more compact. Fixes: 8f47d1a5e545 ("dmaengine: idxd: connect idxd to dmaengine subsystem") Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/163942148935.2412839.18282664745572777280.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-05dmaengine: idxd: embed irq_entry in idxd_wq structDave Jiang6-99/+79
With irq_entry already being associated with the wq in a 1:1 relationship, embed the irq_entry in the idxd_wq struct and remove back pointers for idxe_wq and idxd_device. In the process of this work, clean up the interrupt handle assignment so that there's no decision to be made during submit call on where interrupt handle value comes from. Set the interrupt handle during irq request initialization time. irq_entry 0 is designated as special and is tied to the device itself. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/163942148362.2412839.12055447853311267866.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-05dmaengine: ioatdma: use default_groups in kobj_typeGreg Kroah-Hartman1-1/+2
There are currently 2 ways to create a set of sysfs files for a kobj_type, through the default_attrs field, and the default_groups field. Move the ioatdma sysfs code to use default_groups field which has been the preferred way since aa30f47cf666 ("kobject: Add support for default attribute groups to kobj_type") so that we can soon get rid of the obsolete default_attrs field. Cc: Vinod Koul <vkoul@kernel.org> Cc: dmaengine@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/20220104163330.1338824-1-gregkh@linuxfoundation.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-05Merge branch 'fixes' into nextVinod Koul6-64/+129
We have a conflict in idxd driver between 'fixes' and 'next' and there are patches dependent on this so, merge the 'fixes' branch into next
2022-01-03dmaengine: uniphier-xdmac: Fix type of address variablesKunihiko Hayashi1-2/+3
The variables src_addr and dst_addr handle DMA addresses, so these should be declared as dma_addr_t. Fixes: 667b9251440b ("dmaengine: uniphier-xdmac: Add UniPhier external DMA controller driver") Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> Link: https://lore.kernel.org/r/1639456963-10232-1-git-send-email-hayashi.kunihiko@socionext.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-03dmaengine: stm32-mdma: fix STM32_MDMA_CTBR_TSEL_MASKAmelie Delaunay1-1/+1
This patch fixes STM32_MDMA_CTBR_TSEL_MASK, which is [5:0], not [7:0]. Fixes: a4ffb13c8946 ("dmaengine: Add STM32 MDMA driver") Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com> Link: https://lore.kernel.org/r/20211220165827.1238097-1-amelie.delaunay@foss.st.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-01-03dmaengine: rcar-dmac: Add support for R-Car S4-8Yoshihiro Shimoda1-7/+10
Add support for R-Car S4-8. We can reuse R-Car V3U code so that renames variable names as "gen4". Note that some registers of R-Car V3U do not exist on R-Car S4-8, but none of them are used by the driver for now. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by: Ulrich Hecht <uli+renesas@fpond.eu> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20211222114507.1252947-3-yoshihiro.shimoda.uh@renesas.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-12-17Merge tag 'dmaengine_topic_slave_id_removal_5.17' into nextVinod Koul7-43/+60
Merge the tag dmaengine_topic_slave_id_removal_5.17 into next. This brings in the slave_id removal topic changes
2021-12-17dmaengine: sh: Use bitmap_zalloc() when applicableChristophe JAILLET1-4/+2
'shdma_slave_used' is a bitmap. So use 'bitmap_zalloc()' to simplify code, improve the semantic and avoid some open-coded arithmetic in allocator arguments. Also change the corresponding 'kfree()' into 'bitmap_free()' to keep consistency. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://lore.kernel.org/r/3efaf2784424ae3d7411dc47f8b6b03e7bb8c059.1637702701.git.christophe.jaillet@wanadoo.fr Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-12-17dmaengine: stm32-mdma: Use bitfield helpersGeert Uytterhoeven1-51/+23
Use the FIELD_{GET,PREP}() helpers, instead of defining custom macros implementing the same operations. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/36ceab242a594233dc7dc6f1dddb4ac32d1e846f.1637593297.git.geert+renesas@glider.be Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-12-17dmaengine: stm32-mdma: Remove redundant initialization of pointer hwdescColin Ian King1-1/+1
The pointer hwdesc is being initialized with a value that is never read, it is being updated later in a for-loop. The assignment is redundant and can be removed. Signed-off-by: Colin Ian King <colin.i.king@gmail.com> Reviewed-by: Amelie Delaunay <amelie.delaunay@foss.st.com> Link: https://lore.kernel.org/r/20211204140032.548066-1-colin.i.king@gmail.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-12-17dmaengine: idxd: add knob for enqcmds retriesDave Jiang6-8/+68
Add a sysfs knob to allow tuning of retries for the kernel ENQCMDS descriptor submission. While on host, it is not as likely that ENQCMDS return busy during normal operations due to the driver controlling the number of descriptors allocated for submission. However, when the driver is operating as a guest driver, the chance of retry goes up significantly due to sharing a wq with multiple VMs. A default value is provided with the system admin being able to tune the value on a per WQ basis. Suggested-by: Sanjay Kumar <sanjay.k.kumar@intel.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/163820629464.2702134.7577370098568297574.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-12-17dmaengine: idxd: set defaults for wq configsDave Jiang3-10/+11
Add default values for wq size, max_xfer_size and max_batch_size. These values should provide a general guidance for the wq configuration when the user does not specify any specific values. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/163528473483.3926048.7950067926287180976.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-12-17dmaengine: jz4780: Support bidirectional I/O on one channelPaul Cercueil1-16/+32
For some devices with only half-duplex capabilities, it doesn't make much sense to use one DMA channel per direction, as both channels will never be active at the same time. Add support for bidirectional I/O on DMA channels. The client drivers can then request a "tx-rx" DMA channel which will be used for both directions. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/20211206174259.68133-7-paul@crapouillou.net Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-12-17dmaengine: jz4780: Replace uint32_t with u32Paul Cercueil1-19/+19
Replace the uint32_t type used all over dma-jz4780.c with the equivalent Linux type: u32. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/20211206174259.68133-6-paul@crapouillou.net Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-12-17dmaengine: jz4780: Add support for the MDMA and BDMA in the JZ4760(B)Paul Cercueil1-0/+28
The JZ4760 and JZ4760B SoCs have two regular DMA controllers with 6 channels each. They also have an extra DMA controller named MDMA with only 2 channels, that only supports memcpy operations, and one named BDMA with only 3 channels, that is mostly used for transfers between memories and the BCH controller. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/20211206174259.68133-5-paul@crapouillou.net Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-12-17dmaengine: jz4780: Work around hardware bug on JZ4760 SoCsPaul Cercueil1-0/+8
The JZ4760 SoC has a hardware problem with chan0 not enabling properly if it's enabled before chan1, after a reset (works fine afterwards). This is worked around in the probe function by just enabling then disabling chan1. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/20211206174259.68133-4-paul@crapouillou.net Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-12-17drivers: dma: ti: k3-psil: Add support for J721S2Aswath Govindraju4-1/+171
Add support for J721S2 SOC. Signed-off-by: Aswath Govindraju <a-govindraju@ti.com> Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com> Link: https://lore.kernel.org/r/20211119132315.15901-3-a-govindraju@ti.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-12-17dmaengine: ti: k3-udma: Add SoC dependent data for J721S2 SoCAswath Govindraju1-0/+1
Add SYSFW defined rchan_oes_offset number for J721S2 SoC in soc data. Signed-off-by: Aswath Govindraju <a-govindraju@ti.com> Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com> Link: https://lore.kernel.org/r/20211119132315.15901-2-a-govindraju@ti.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-12-17dmaengine: at_xdmac: Use struct_size() in devm_kzalloc()Gustavo A. R. Silva1-4/+4
Make use of the struct_size() helper instead of an open-coded version, in order to avoid any potential type mistakes or integer overflows that, in the worst scenario, could lead to heap overflows. Link: https://github.com/KSPP/linux/issues/160 Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20211208001013.GA62330@embeddedor Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-12-17dmaengine: xilinx: Handle IRQ mapping errorsLars-Peter Clausen1-3/+8
Handle errors when trying to map the IRQ for the DMA channels. The main motivation here is to be able to handle probe deferral. E.g. when using DT overlays it is possible that the DMA controller is probed before interrupt controller, depending on the order in the DT. In order to support this switch from irq_of_parse_and_map() to of_irq_get(), which internally does the same, but it will return EPROBE_DEFER when the interrupt controller is not yet available. As a result other errors, such as an invalid IRQ specification, or missing IRQ are also properly handled. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com> Link: https://lore.kernel.org/r/20211208114212.234130-1-lars@metafoo.de Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-12-17dmaengine: xilinx_dpdma: stop using slave_id fieldArnd Bergmann1-6/+11
The display driver wants to pass a custom flag to the DMA engine driver, which it started doing by using the slave_id field that was traditionally used for a different purpose. As there is no longer a correct use for the slave_id field, it should really be removed, and the remaining users changed over to something different. The new mechanism for passing nonstandard settings is using the .peripheral_config field, so use that to pass a newly defined structure here, making it clear that this will not work in portable drivers. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20211122222203.4103644-10-arnd@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-12-17dmaengine: qcom-adm: stop abusing slave_id configArnd Bergmann1-7/+49
The slave_id was previously used to pick one DMA slave instead of another, but this is now done through the DMA descriptors in device tree. For the qcom_adm driver, the configuration is documented in the DT binding to contain a tuple of device identifier and a "crci" field, but the implementation ends up using only a single cell for identifying the slave, with the crci getting passed in nonstandard properties of the device, and passed through the dma driver using the old slave_id field. Part of the problem apparently is that the nand driver ends up using only a single DMA request ID, but requires distinct values for "crci" depending on the type of transfer. Change both the dmaengine driver and the two slave drivers to allow the documented binding to work in addition to the ad-hoc passing of crci values. In order to no longer abuse the slave_id field, pass the data using the "peripheral_config" mechanism instead. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20211122222203.4103644-9-arnd@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-12-17dmaengine: sprd: stop referencing config->slave_idArnd Bergmann1-3/+0
It appears that the code that reads the slave_id from the channel config was copied incorrectly from other drivers. Nothing ever sets this field on platforms that use this driver, so remove the reference. Reviewed-by: Baolin Wang <baolin.wang7@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20211122222203.4103644-8-arnd@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
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