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linux-stable/drivers/dma
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Andy Shevchenko 182cd3f4e0 dmaengine: idma64: Use actual device for DMA transfers 
[ Upstream commit 5ba846b1ee ]

Intel IOMMU, when enabled, tries to find the domain of the device,
assuming it's a PCI one, during DMA operations, such as mapping or
unmapping. Since we are splitting the actual PCI device to couple of
children via MFD framework (see drivers/mfd/intel-lpss.c for details),
the DMA device appears to be a platform one, and thus not an actual one
that performs DMA. In a such situation IOMMU can't find or allocate
a proper domain for its operations. As a result, all DMA operations are
failed.

In order to fix this, supply parent of the platform device
to the DMA engine framework and fix filter functions accordingly.

We may rely on the fact that parent is a real PCI device, because no
other configuration is present in the wild.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> [for tty parts]
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2019-06-15 11:54:59 +02:00
..
bestcomm License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dw dmaengine: dw: Fix FIFO size for Intel Merrifield 2018-12-13 09:18:52 +01:00
hsu serial: 8250_mid: handle interrupt correctly in DMA case 2017-01-19 14:20:23 +01:00
ioat driver/dma/ioat: Call del_timer_sync() without holding prep_lock 2018-11-13 11:14:59 -08:00
ipu dmaengine: ipu: Make sure the interrupt routine checks all interrupts. 2017-01-02 10:48:44 +05:30
ppc4xx dmaengine: ppc4xx: fix off-by-one build failure 2018-11-13 11:15:05 -08:00
qcom dmaengine: qcom_hidma: initialize tx flags in hidma_prep_dma_* 2019-04-05 22:31:39 +02:00
sh dmaengine: sh: rcar-dmac: With cyclic DMA residue 0 is valid 2019-05-02 09:40:30 +02:00
xilinx dmaengine: xilinx_dma: Remove __aligned attribute on zynqmp_dma_desc_ll 2019-02-12 19:45:59 +01:00
Kconfig dmaengine: Add driver for Altera / Intel mSGDMA IP core 2017-07-18 22:04:54 +05:30
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
TODO
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acpi-dma.c
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altera-msgdma.c dmaengine: altera: Use IRQ-safe spinlock calls in the error paths as well 2017-10-20 11:51:10 +05:30
amba-pl08x.c dmaengine: pl08x: constify amba_id 2017-08-28 21:11:08 +05:30
at_hdmac.c dmaengine: at_hdmac: fix module unloading 2018-12-05 19:41:25 +01:00
at_hdmac_regs.h
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at_xdmac.c dmaengine: at_xdmac: remove BUG_ON macro in tasklet 2019-05-31 06:47:24 -07:00
bcm-sba-raid.c dmaengine: bcm-sba-raid: Remove redundant SBA_REQUEST_STATE_COMPLETED 2017-08-28 16:44:24 +05:30
bcm2835-dma.c dmaengine: bcm2835: Fix abort of transactions 2019-02-12 19:46:11 +01:00
coh901318.c
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coh901318.h
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coh901318_lli.c
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cppi41.c dmaengine: cppi41: delete channel from pending list when stop channel 2018-12-13 09:18:52 +01:00
dma-axi-dmac.c
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dma-jz4740.c dmaengine: jz4740: disable/unprepare clk if probe fails 2018-02-25 11:08:03 +01:00
dma-jz4780.c dmaengine: dma-jz4780: Return error if not probed from DT 2018-11-13 11:15:00 -08:00
dmaengine.c dmaengine: remove BUG_ON while registering devices 2017-08-28 09:39:46 +05:30
dmaengine.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dmatest.c dmaengine: dmatest: Abort test in case of mapping error 2019-03-13 14:03:21 -07:00
edma.c dmaengine: edma: Align the memcpy acnt array size with the transfer 2017-09-21 22:51:07 +05:30
ep93xx_dma.c dmaengine: ep93xx: Don't drain the transfers in terminate_all() 2017-05-24 09:52:46 +05:30
fsl-edma.c dmaengine: fsl-edma: disable clks on all error paths 2018-03-03 10:24:22 +01:00
fsl_raid.c dmaengine: fsl_raid: make of_device_ids const. 2017-06-29 09:25:28 +05:30
fsl_raid.h
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fsldma.c dmaengine: remove DMA_SG as it is dead code in kernel 2017-08-22 09:22:11 +05:30
fsldma.h dmaengine: fsldma: set BWC, DAHTS and SAHTS values correctly 2017-06-22 18:31:35 +05:30
idma64.c dmaengine: idma64: Use actual device for DMA transfers 2019-06-15 11:54:59 +02:00
idma64.h dmaengine: idma64: Use actual device for DMA transfers 2019-06-15 11:54:59 +02:00
img-mdc-dma.c dmaengine: img-mdc: remove unused ‘prev_phys’ 2016-12-12 22:25:22 +05:30
imx-dma.c dmaengine: imx-dma: fix warning comparison of distinct pointer types 2019-04-05 22:31:38 +02:00
imx-sdma.c dmaengine: imx-sdma: Fix compilation warning. 2017-05-30 11:52:58 +05:30
iop-adma.c
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k3dma.c dmaengine: k3dma: Off by one in k3_of_dma_simple_xlate() 2018-08-24 13:09:08 +02:00
lpc18xx-dmamux.c
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mic_x100_dma.c dmaengine: mic_x100_dma: remove unused ‘data’ 2016-12-12 22:25:22 +05:30
mic_x100_dma.h
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mmp_pdma.c
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mmp_tdma.c
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moxart-dma.c
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mpc512x_dma.c
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mv_xor.c dmaengine: remove DMA_SG as it is dead code in kernel 2017-08-22 09:22:11 +05:30
mv_xor.h dmaengine: mv_xor: Add support for scatter-gather DMA mode 2016-11-25 11:16:36 +05:30
mv_xor_v2.c dmaengine: mv_xor_v2: kill the tasklets upon exit 2018-09-26 08:38:05 +02:00
mxs-dma.c dmaengine: mxs: Use %zu for printing a size_t variable 2017-06-15 09:44:45 +05:30
nbpfaxi.c dmaengine: remove DMA_SG as it is dead code in kernel 2017-08-22 09:22:11 +05:30
of-dma.c dmaengine: Convert to using %pOF instead of full_name 2017-07-19 09:30:44 +05:30
omap-dma.c dmaengine: omap-dma: port_window support correction for both direction 2017-06-20 11:45:01 +08:00
pch_dma.c dmaengine: pch_dma: remove unused ‘cookie’ 2016-12-12 22:25:22 +05:30
pl330.c dmaengine: pl330: _stop: clear interrupt status 2019-05-31 06:47:22 -07:00
pxa_dma.c
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s3c24xx-dma.c dmaengine: s3c24xx: remove unused ‘cdata’ 2016-12-12 22:25:22 +05:30
sa11x0-dma.c
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sirf-dma.c dmaengine: sirf-dma: remove unused ‘sdesc’ 2016-12-12 22:25:22 +05:30
st_fdma.c
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st_fdma.h
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ste_dma40.c Merge branch 'topic/dmatest' into for-linus 2017-09-06 21:55:10 +05:30
ste_dma40_ll.c
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ste_dma40_ll.h
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stm32-dma.c dmaengine: stm32-dma: fix incomplete configuration in cyclic mode 2018-11-13 11:15:05 -08:00
sun4i-dma.c dmaengine: sun4i: fix invalid argument 2017-04-24 09:50:05 +05:30
sun6i-dma.c dmaengine: sun6i: support V3s SoC variant 2017-09-05 09:07:20 +05:30
tegra20-apb-dma.c dmaengine: tegra: avoid overflow of byte tracking 2019-04-05 22:31:40 +02:00
tegra210-adma.c dmaengine: tegra210-adma: use devm_clk_*() helpers 2019-05-31 06:47:33 -07:00
ti-dma-crossbar.c dmaengine: ti-dma-crossbar: Fix event mapping for TPCC_EVT_MUX_60_63 2018-03-24 11:01:28 +01:00
timb_dma.c
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txx9dmac.c
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txx9dmac.h
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virt-dma.c dmaengine: virt-dma: Convert to use list_for_each_entry_safe() 2017-04-26 09:03:27 +05:30
virt-dma.h
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xgene-dma.c dmaengine: xgene-dma: remove unused xgene_dma_invalidate_buffer 2017-08-22 22:13:44 +05:30
zx_dma.c dmaengine: zx: fix build warning 2017-01-25 15:33:45 +05:30