AuxXxilium/linux_dsm_epyc7002
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c671b6dede
linux_dsm_epyc7002/drivers/mmc/host
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Daniel Drake c671b6dede mmc: alcor: work with multiple-entry sglists 
DMA on this hardware is limited to dealing with a 4096 bytes at a
time. Previously, the driver was set up accordingly to request single-page
DMA buffers, however that had the effect of generating a large number
of small MMC requests for data I/O.

Improve the driver to accept multi-entry scatter-gather lists. The size of
each entry is already capped to 4096 bytes (AU6601_MAX_DMA_BLOCK_SIZE),
matching the hardware requirements. Existing driver code already iterates
through remaining sglist entries after each DMA transfer is complete.

Also add some comments to help clarify the situation, and clear up
some of the confusion I had regarding DMA vs PIO.

Testing with dd, this increases write performance from 2mb/sec to
10mb/sec, and increases read performance from 4mb/sec to 14mb/sec.

Signed-off-by: Daniel Drake <drake@endlessm.com>
Link: http://lkml.kernel.org/r/CAD8Lp47JYdZzbV9F+asNwvSfLF_po_J7ir6R_Vb-Dab21_=Krw@mail.gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2019-05-06 11:55:39 +02:00
..
alcor.c mmc: alcor: work with multiple-entry sglists 2019-05-06 11:55:39 +02:00
android-goldfish.c mmc: android-goldfish: fix bad logic of sg_copy_{from,to}_buffer conversion 2018-08-21 16:06:17 +02:00
atmel-mci.c mmc: atmel-mci: enable 8 bits buswidth support 2019-02-25 08:40:58 +01:00
au1xmmc.c mmc: au1xmmc: handle highmem pages 2018-05-29 12:24:26 +02:00
bcm2835.c mmc: bcm2835: Deduplicate reset of driver data on remove 2019-02-25 08:40:58 +01:00
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: catch all errors when getting regulators 2017-10-30 11:50:33 +01:00
cavium.h mmc: cavium: Add scatter-gather DMA support 2017-04-24 21:42:10 +02:00
cb710-mmc.c mmc: cb710: fix indentation issue in if block 2019-02-25 08:40:58 +01:00
cb710-mmc.h
cqhci.c mmc: cqhci: allow hosts to update dcmd cmd desc 2019-04-15 11:55:54 +02:00
cqhci.h mmc: cqhci: add CQHCI_SSC1 register CBC field mask 2019-04-15 11:55:54 +02:00
davinci_mmc.c mmc: davinci: remove extraneous __init annotation 2019-03-18 11:02:30 +01:00
dw_mmc-bluefield.c mmc: dw_mmc-bluefield: : Fix the license information 2019-01-22 08:46:20 +01:00
dw_mmc-exynos.c mmc: dw_mmc-exynos: Add tuning for sdr and ddr timing for USH-I mode 2018-10-08 12:02:22 +02:00
dw_mmc-exynos.h
dw_mmc-hi3798cv200.c mmc: dw_mmc: hi3798cv200: add MMC_CAP_CMD23 cap 2018-10-08 11:40:43 +02:00
dw_mmc-k3.c mmc: dw_mmc: Fix out-of-bounds access for slot's caps 2018-02-27 15:12:25 +01:00
dw_mmc-pci.c mmc: dw_mmc: remove the deprecated "num-slots" 2018-03-15 09:27:11 +01:00
dw_mmc-pltfm.c
dw_mmc-pltfm.h
dw_mmc-rockchip.c mmc: dw_mmc: fix misleading comment in dw_mci_rk3288_set_ios 2018-05-02 15:08:38 +02:00
dw_mmc-zx.c mmc: dw_mmc: Fix out-of-bounds access for slot's caps 2018-02-27 15:12:25 +01:00
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: fix card threshold control configuration 2018-07-03 10:57:16 +02:00
dw_mmc.h mmc: dw_mmc: add support for hi3798cv200 specific extensions of dw-mshc 2018-03-15 14:43:22 +01:00
jz4740_mmc.c mmc: jz4740: Remove platform data and use standard APIs 2019-02-25 08:40:58 +01:00
Kconfig mmc: sdhci_am654: Clear HISPD_ENA in some lower speed modes 2019-04-15 11:55:54 +02:00
Makefile mmc: sdhci_am654: Add Initial Support for AM654 SDHCI driver 2018-12-17 08:26:24 +01:00
meson-gx-mmc.c mmc: meson-gx: fix interrupt name 2019-02-13 08:41:15 +01:00
meson-mx-sdio.c mmc: meson-mx-sdio: check devm_kasprintf for failure 2018-12-17 08:26:24 +01:00
mmc_spi.c mmc: mmc_spi: Convert to use SPDX identifier 2019-04-15 11:55:54 +02:00
mmci_qcom_dml.c mmc: mmci: qcom: define get_dctrl_cfg 2019-04-15 11:55:54 +02:00
mmci_stm32_sdmmc.c mmc: mmci: stm32: define get_dctrl_cfg 2019-04-15 11:55:54 +02:00
mmci.c mmc: mmci: replace blksz_datactrlXX by get_datactrl_cfg callback 2019-04-15 11:55:54 +02:00
mmci.h mmc: mmci: replace blksz_datactrlXX by get_datactrl_cfg callback 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: check for valid optional memory resource 2019-04-15 11:55:54 +02:00
mvsdio.c mmc: mvsdio: Enable MMC_CAP_ERASE 2018-05-31 15:02:16 +02:00
mvsdio.h
mxcmmc.c mmc: mxcmmc: "Revert mmc: mxcmmc: handle highmem pages" 2019-03-21 11:00:46 +01:00
mxs-mmc.c mmc: mxs-mmc: Enable MMC_CAP_ERASE 2019-04-15 11:55:54 +02:00
of_mmc_spi.c mmc: mmc_spi: Convert to use SPDX identifier 2019-04-15 11:55:54 +02:00
omap_hsmmc.c Merge branch 'fixes' into next 2018-12-17 09:00:52 +01:00
omap.c mmc: omap: fix the maximum timeout setting 2019-02-25 08:40:58 +01:00
pxamci.c mmc: pxamci: fix enum type confusion 2019-03-18 11:00:41 +01:00
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_core.c mmc: renesas_sdhi: set CBSY flag before probing TMIO host 2019-04-15 11:55:54 +02:00
renesas_sdhi_internal_dmac.c mmc: renesas_sdhi: prevent overflow for max_req_size 2019-04-15 11:55:54 +02:00
renesas_sdhi_sys_dmac.c mmc: renesas_sdhi: prevent overflow for max_req_size 2019-04-15 11:55:54 +02:00
renesas_sdhi.h mmc: renesas_sdhi: update copyright information 2019-04-15 11:55:54 +02:00
rtsx_pci_sdmmc.c misc: rtsx: Move Realtek Card Reader Driver to misc 2017-11-29 10:16:44 +00:00
rtsx_usb_sdmmc.c mmc: rtsx_usb_sdmmc: Re-work card detection/removal support 2018-12-17 08:26:24 +01:00
s3cmci.c mmc: slot-gpio: Remove override_active_level on WP 2019-02-25 08:40:58 +01:00
s3cmci.h
sdhci_am654.c mmc: sdhci_am654: Clear HISPD_ENA in some lower speed modes 2019-04-15 11:55:54 +02:00
sdhci_f_sdh30.c mmc: sdhci_f_sdh30: add ACPI support 2018-01-11 15:50:53 +01:00
sdhci-acpi.c mmc: sdhci-acpi: Disable LED control for Intel BYT-based controllers 2018-12-17 08:26:24 +01:00
sdhci-bcm-kona.c mmc: sdhci-bcm-kona: Drop unused includes 2019-02-25 08:40:58 +01:00
sdhci-brcmstb.c mmc: sdhci-brcmstb: handle mmc_of_parse() errors during probe 2019-02-25 08:40:58 +01:00
sdhci-cadence.c mmc: sdhci-cadence: include <linux/bits.h> instead of <linux/bitops.h> 2018-12-17 08:26:24 +01:00
sdhci-cns3xxx.c
sdhci-dove.c
sdhci-esdhc-imx.c Merge branch 'fixes' into next 2019-02-28 12:19:51 +01:00
sdhci-esdhc.h mmc: sdhci-of-esdhc: workaround for unreliable pulse width detection 2018-12-17 08:26:24 +01:00
sdhci-iproc.c mmc: sdhci-iproc: handle mmc_of_parse() errors during probe 2019-01-14 14:14:27 +01:00
sdhci-msm.c mmc: sdhci-msm: avoid unused function warning 2018-12-17 08:26:24 +01:00
sdhci-of-arasan.c mmc: sdhci-of-arasan: Add DTS property to disable DCMDs. 2019-04-15 11:55:54 +02:00
sdhci-of-at91.c mmc: sdhci-of-at91: make function sdhci_at91_set_uhs_signaling static 2017-10-30 11:46:01 +01:00
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: add quirk to ignore command inhibit for data 2019-04-15 11:55:54 +02:00
sdhci-of-hlwd.c
sdhci-omap.c mmc: sdhci-omap: Make sdhci_omap_reset static 2019-04-15 11:55:54 +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 support for Intel CML 2019-04-15 11:55:54 +02:00
sdhci-pci-data.c mmc: sdhci-pci: Use ACPI DSM to get driver strength for some Intel devices 2017-04-24 21:41:28 +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 mmc: sdhci: Remove unneeded quirk2 flag of O2 SD host controller 2019-02-25 08:40:58 +01:00
sdhci-pci.h mmc: sdhci-pci: Add support for Intel CML 2019-04-15 11:55:54 +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: sdhci-pltfm: Convert DT properties to generic device properties 2018-10-08 11:40:43 +02:00
sdhci-pltfm.h mmc: sdhci-pltfm: Convert DT properties to generic device properties 2018-10-08 11:40:43 +02:00
sdhci-pxav2.c mmc: sdhci-pxav2: Drop unused include 2019-02-25 08:40:58 +01:00
sdhci-pxav3.c mmc: sdhci: pxav3: Delete GPIO handling 2018-10-08 11:40:43 +02:00
sdhci-s3c.c mmc: sdhci-*: Don't emit error msg if sdhci_add_host() fails 2018-05-29 12:24:26 +02:00
sdhci-sirf.c mmc: sdhci: sirf: Use the slot GPIO descriptor 2018-10-08 11:40:43 +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: Add Spreadtrum's initial host controller 2018-10-08 11:40:43 +02:00
sdhci-st.c mmc: sdhci-*: Don't emit error msg if sdhci_add_host() fails 2018-05-29 12:24:26 +02:00
sdhci-tegra.c mmc: tegra: add sdhci tegra suspend and resume 2019-04-15 12:04:09 +02:00
sdhci-xenon-phy.c mmc: sdhci-xenon: Fixup already marked switch fall-through 2019-02-25 08:40:58 +01:00
sdhci-xenon.c mmc: sdhci-xenon: Fix timeout checks 2018-12-17 08:26:24 +01:00
sdhci-xenon.h mmc: sdhci-xenon: Fix clock resource by adding an optional bus clock 2017-10-04 10:50:36 +02:00
sdhci.c mmc: sdhci: Remove finish_tasklet 2019-04-15 12:03:39 +02:00
sdhci.h mmc: sdhci: Remove finish_tasklet 2019-04-15 12:03:39 +02:00
sdricoh_cs.c mmc: sdricoh_cs: constify mmc_host_ops structures 2017-08-30 14:01:44 +02:00
sh_mmcif.c mmc: use SPDX identifier for Renesas drivers 2018-10-08 11:40:43 +02:00
sunxi-mmc.c mmc: sunxi-mmc: Drop unused includes 2019-02-25 08:40:58 +01:00
tifm_sd.c mmc: tifm_sd: Mark expected switch fall-through 2018-10-08 11:40:43 +02:00
tmio_mmc_core.c mmc: tmio: introduce macro for max block size 2019-04-15 11:55:54 +02:00
tmio_mmc.c mmc: tmio: remove TMIO_MMC_HAVE_HIGH_REG flag 2018-10-15 14:39:45 +02:00
tmio_mmc.h mmc: tmio: introduce macro for max block size 2019-04-15 11:55:54 +02:00
toshsd.c mmc: toshsd: constify mmc_host_ops structures 2017-08-30 14:01:42 +02:00
toshsd.h
uniphier-sd.c mmc: uniphier-sd: avoid using broken DMA RX channel 2018-10-15 14:53:21 +02:00
usdhi6rol0.c mmc: use SPDX identifier for Renesas drivers 2018-10-08 11:40:43 +02:00
ushc.c mmc: ushc: handle highmem pages 2018-05-21 15:49:20 +02:00
via-sdmmc.c mmc: Convert timers to use timer_setup() 2017-11-02 15:20:28 +01:00
vub300.c mmc: vub300: Use common code in __download_offload_pseudocode() 2017-11-02 15:20:29 +01:00
wbsd.c mmc: wbsd: handle highmem pages 2018-05-21 15:49:21 +02:00
wbsd.h
wmt-sdmmc.c mmc: wmt-sdmmc: Drop unused include 2019-02-25 08:40:58 +01:00