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OpenCloudOS-Kernel/drivers/mmc/host
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Nicolin Chen b960bc448a mmc: tegra: Implement ->set_dma_mask() 
The SDHCI controller on Tegra186 supports 40-bit addressing, which is
usually enough to address all of system memory. However, if the SDHCI
controller is behind an IOMMU, the address space can go beyond. This
happens on Tegra186 and later where the ARM SMMU has an input address
space of 48 bits. If the DMA API is backed by this ARM SMMU, the top-
down IOVA allocator will cause IOV addresses to be returned that the
SDHCI controller cannot access.

Unfortunately, prior to the introduction of the ->set_dma_mask() host
operation, the SDHCI core would set either a 64-bit DMA mask if the
controller claimed to support 64-bit addressing, or a 32-bit DMA mask
otherwise.

Since the full 64 bits cannot be addressed on Tegra, this had to be
worked around in commit 68481a7e1c ("mmc: tegra: Mark 64 bit dma
broken on Tegra186") by setting the SDHCI_QUIRK2_BROKEN_64_BIT_DMA
quirk, which effectively restricts the DMA mask to 32 bits.

One disadvantage of this is that dma_map_*() APIs will now try to use
the swiotlb to bounce DMA to addresses beyond of the controller's DMA
mask. This in turn caused degraded performance and can lead to
situations where the swiotlb buffer is exhausted, which in turn leads
to DMA transfers to fail.

With the recent introduction of the ->set_dma_mask() host operation,
this can now be properly fixed. For each generation of Tegra, the exact
supported DMA mask can be configured. This kills two birds with one
stone: it avoids the use of bounce buffers because system memory never
exceeds the addressable memory range of the SDHCI controllers on these
devices, and at the same time when an IOMMU is involved, it prevents
IOV addresses from being allocated beyond the addressible range of the
controllers.

Since the DMA mask is now properly handled, the 64-bit DMA quirk can be
removed.

Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
[treding@nvidia.com: provide more background in commit message]
Tested-by: Nicolin Chen <nicoleotsuka@gmail.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Cc: stable@vger.kernel.org # v4.15 +
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
 		2019-09-27 20:30:13 +02:00
..
Kconfig mmc: sdhci-of-aspeed: Depend on CONFIG_OF_ADDRESS 2019-09-11 15:58:39 +02:00
Makefile mmc: sdhci-of-aspeed: Add support for the ASPEED SD controller 2019-09-11 15:58:39 +02:00
alcor.c mmc: alcor: remove a redundant greater or equal to zero comparison 2019-07-10 13:17:30 +02:00
android-goldfish.c MMC core: 2019-07-11 18:11:21 -07:00
atmel-mci.c mmc: atmel-mci: Mark expected switch fall-throughs 2019-09-11 15:58:39 +02:00
au1xmmc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
bcm2835.c Merge branch 'fixes' into next 2019-09-11 15:59:01 +02:00
cavium-octeon.c mmc: cavium-octeon: Convert to use module_platform_driver 2017-08-30 15:03:38 +02:00
cavium-thunderx.c mmc: cavium: Fix use-after-free in of_platform_device_destroy 2017-09-08 15:38:22 +02:00
cavium.c mmc: cavium: Add the missing dma unmap when the dma has finished. 2019-08-06 18:59:14 +02:00
cavium.h mmc: cavium: Add scatter-gather DMA support 2017-04-24 21:42:10 +02:00
cb710-mmc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cb710-mmc.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cqhci.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284 2019-06-05 17:36:37 +02:00
cqhci.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284 2019-06-05 17:36:37 +02:00
davinci_mmc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
dw_mmc-bluefield.c mmc: dw_mmc-bluefield: : Fix the license information 2019-01-22 08:46:20 +01:00
dw_mmc-exynos.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dw_mmc-exynos.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dw_mmc-hi3798cv200.c mmc: dw_mmc: hi3798cv200: make array degrees static const, makes object smaller 2019-09-11 16:10:37 +02:00
dw_mmc-k3.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dw_mmc-pci.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dw_mmc-pltfm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dw_mmc-pltfm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dw_mmc-rockchip.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dw_mmc-zx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dw_mmc-zx.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dw_mmc.c mmc: dw_mmc: Re-store SDIO IRQs mask at system resume 2019-09-11 16:10:18 +02:00
dw_mmc.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
jz4740_mmc.c mmc: jz4740: Drop dependency on arch header 2019-09-11 15:58:39 +02:00
meson-gx-mmc.c mmc: Remove dev_err() usage after platform_get_irq() 2019-09-11 15:58:39 +02:00
meson-mx-sdio.c mmc: meson-mx-sdio: Fix misuse of GENMASK macro 2019-07-22 15:09:23 +02:00
mmc_spi.c mmc: mmc_spi: Convert to use for_each_sg() 2019-09-11 15:58:39 +02:00
mmci.c mmc: mmci: Clarify comments and some code for busy detection 2019-09-11 15:58:39 +02:00
mmci.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mmci_qcom_dml.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284 2019-06-05 17:36:37 +02:00
mmci_stm32_sdmmc.c mmc: mmci: stm32: define get_dctrl_cfg 2019-04-15 11:55:54 +02:00
moxart-mmc.c mmc: moxart: constify mmc_host_ops structures 2017-08-30 14:01:41 +02:00
mtk-sd.c mmc: mtk-sd: Re-store SDIO IRQs mask at system resume 2019-09-11 16:10:18 +02:00
mvsdio.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mvsdio.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mxcmmc.c mmc: Remove dev_err() usage after platform_get_irq() 2019-09-11 15:58:39 +02:00
mxs-mmc.c mmc: mxs: use devm_platform_ioremap_resource() to simplify code 2019-09-11 15:58:39 +02:00
of_mmc_spi.c mmc: mmc_spi: Convert to use SPDX identifier 2019-04-15 11:55:54 +02:00
omap.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
omap_hsmmc.c mmc: omap_hsmmc: Use dev_get_drvdata() 2019-05-06 11:55:39 +02:00
pxamci.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
pxamci.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
renesas_sdhi.h mmc: renesas_sdhi: update copyright information 2019-04-15 11:55:54 +02:00
renesas_sdhi_core.c Merge branch 'fixes' into next 2019-09-13 13:57:37 +02:00
renesas_sdhi_internal_dmac.c mmc: renesas_sdhi_internal_dmac: Add MMC_CAP2_MERGE_CAPABLE 2019-09-12 13:14:09 +01:00
renesas_sdhi_sys_dmac.c mmc: renesas_sdhi_sys_dmac: Remove all R-Car Gen3 SoCs 2019-09-11 15:58:39 +02:00
rtsx_pci_sdmmc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 17 2019-05-21 11:28:46 +02:00
rtsx_usb_sdmmc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
s3cmci.c mmc: Remove dev_err() usage after platform_get_irq() 2019-09-11 15:58:39 +02:00
s3cmci.h MMC core: 2019-07-11 18:11:21 -07:00
sdhci-acpi.c mmc: sdhci-sprd: Fix the incorrect soft reset operation when runtime resuming 2019-08-06 18:59:14 +02:00
sdhci-bcm-kona.c mmc: sdhci-bcm-kona: Drop unused includes 2019-02-25 08:40:58 +01:00
sdhci-brcmstb.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
sdhci-cadence.c mmc: sdhci-cadence: override spec version 2019-09-11 15:58:39 +02:00
sdhci-cns3xxx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
sdhci-dove.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 176 2019-05-30 11:29:19 -07:00
sdhci-esdhc-imx.c mmc: sdhci: Drop redundant code for SDIO IRQs 2019-09-11 16:10:19 +02:00
sdhci-esdhc.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 178 2019-05-30 11:29:19 -07:00
sdhci-iproc.c mmc: sdhci-iproc: Add support for emmc2 of the BCM2711 2019-09-11 15:58:39 +02:00
sdhci-msm.c mmc: Remove dev_err() usage after platform_get_irq() 2019-09-11 15:58:39 +02:00
sdhci-of-arasan.c mmc: sdhci-of-arasan: Add Support for Intel LGM eMMC 2019-09-11 15:58:39 +02:00
sdhci-of-aspeed.c mmc: sdhci-of-aspeed: Allow max-frequency limitation of SDCLK 2019-09-11 15:58:39 +02:00
sdhci-of-at91.c mmc: sdhci-of-at91: add quirk for broken HS200 2019-08-22 13:49:40 +02:00
sdhci-of-dwcmshc.c mmc: sdhci-of-dwcmshc: solve 128MB DMA boundary limitation 2018-10-08 11:40:43 +02:00
sdhci-of-esdhc.c mmc: sdhci-of-esdhc: set DMA snooping based on DMA coherence 2019-09-27 20:30:13 +02:00
sdhci-of-hlwd.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
sdhci-omap.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 341 2019-06-05 17:37:07 +02:00
sdhci-pci-arasan.c mmc:host:sdhci-pci:Addition of Arasan PCI Controller with integrated phy. 2018-01-04 12:46:11 +01:00
sdhci-pci-core.c mmc: sdhci-pci: Add another Id for Intel CML 2019-09-11 15:58:39 +02:00
sdhci-pci-data.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
sdhci-pci-dwc-mshc.c mmc: sdhci-pci-dwc-mshc: synopsys dwc mshc support 2018-07-16 11:21:45 +02:00
sdhci-pci-o2micro.c Merge branch 'fixes' into next 2019-09-11 15:59:01 +02:00
sdhci-pci.h mmc: sdhci-pci: Add another Id for Intel CML 2019-09-11 15:58:39 +02:00
sdhci-pic32.c mmc: sdhci-*: Don't emit error msg if sdhci_add_host() fails 2018-05-29 12:24:26 +02:00
sdhci-pltfm.c mmc: Remove dev_err() usage after platform_get_irq() 2019-09-11 15:58:39 +02:00
sdhci-pltfm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
sdhci-pxav2.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
sdhci-pxav3.c mmc: sdhci-sprd: Fix the incorrect soft reset operation when runtime resuming 2019-08-06 18:59:14 +02:00
sdhci-s3c.c mmc: Remove dev_err() usage after platform_get_irq() 2019-09-11 15:58:39 +02:00
sdhci-sirf.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 4 2019-05-21 11:28:40 +02:00
sdhci-spear.c mmc: sdhci: spear: Use the slot GPIO descriptor 2018-10-08 11:40:43 +02:00
sdhci-sprd.c mmc: sdhci-sprd: clear the UHS-I modes read from registers 2019-08-30 09:17:53 +02:00
sdhci-st.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
sdhci-tegra.c mmc: tegra: Implement ->set_dma_mask() 2019-09-27 20:30:13 +02:00
sdhci-xenon-phy.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372 2019-06-05 17:37:10 +02:00
sdhci-xenon.c mmc: sdhci-sprd: Fix the incorrect soft reset operation when runtime resuming 2019-08-06 18:59:14 +02:00
sdhci-xenon.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372 2019-06-05 17:37:10 +02:00
sdhci.c mmc: sdhci: Let drivers define their DMA mask 2019-09-27 20:30:13 +02:00
sdhci.h mmc: sdhci: Let drivers define their DMA mask 2019-09-27 20:30:13 +02:00
sdhci_am654.c mmc: sdhci_am654: Make some symbols static 2019-07-10 13:17:30 +02:00
sdhci_f_sdh30.c mmc: Remove dev_err() usage after platform_get_irq() 2019-09-11 15:58:39 +02:00
sdricoh_cs.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
sh_mmcif.c mmc: use SPDX identifier for Renesas drivers 2018-10-08 11:40:43 +02:00
sunxi-mmc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
tifm_sd.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
tmio_mmc.c Revert "mmc: tmio: move runtime PM enablement to the driver implementations" 2019-09-13 13:48:35 +02:00
tmio_mmc.h mmc: tmio: Fixup runtime PM management during probe 2019-09-13 13:49:04 +02:00
tmio_mmc_core.c mmc: tmio: Fixup runtime PM management during remove 2019-09-13 13:49:09 +02:00
toshsd.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
toshsd.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
uniphier-sd.c Merge branch 'fixes' into next 2019-09-13 13:57:37 +02:00
usdhi6rol0.c mmc: usdhi6rol0: mark expected switch fall-throughs 2019-05-06 12:33:03 +02:00
ushc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
via-sdmmc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
vub300.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372 2019-06-05 17:37:10 +02:00
wbsd.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
wbsd.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
wmt-sdmmc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00