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1f522c5049
linux/drivers/scsi/ufs
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Bart Van Assche 1f522c5049 scsi: ufs: Revert "Utilize Transfer Request List Completion Notification Register" 
Using the UTRLCNR register involves two MMIO accesses in the hot path while
using the doorbell register only involves a single MMIO access. Since MMIO
accesses take time, do not use the UTRLCNR register. The spinlock
contention on the SCSI host lock that is reintroduced by this commit will
be addressed later.

This reverts commit 6f71517296.

Link: https://lore.kernel.org/r/20210722033439.26550-12-bvanassche@acm.org
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Stanley Chu <stanley.chu@mediatek.com>
Cc: Can Guo <cang@codeaurora.org>
Cc: Asutosh Das <asutoshd@codeaurora.org>
Cc: Avri Altman <avri.altman@wdc.com>
Tested-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-02 21:43:58 -04:00
..
cdns-pltfrm.c scsi: ufs: Reduce power management code duplication 2021-08-02 21:43:57 -04:00
Kconfig scsi: ufs: ufshpb: Introduce Host Performance Buffer feature 2021-08-01 16:04:23 -04:00
Makefile scsi: ufs: ufshpb: Introduce Host Performance Buffer feature 2021-08-01 16:04:23 -04:00
tc-dwc-g210-pci.c scsi: ufs: Reduce power management code duplication 2021-08-02 21:43:57 -04:00
tc-dwc-g210-pltfrm.c scsi: ufs: Reduce power management code duplication 2021-08-02 21:43:57 -04:00
tc-dwc-g210.c
tc-dwc-g210.h
ti-j721e-ufs.c scsi: ufs: ti-j721e-ufs: Fix error return in ti_j721e_ufs_probe() 2020-08-17 21:48:45 -04:00
ufs_bsg.c scsi: ufs: core: Enable power management for wlun 2021-05-10 22:28:20 -04:00
ufs_bsg.h
ufs_quirks.h scsi: ufs: Introduce device quirk "DELAY_AFTER_LPM" 2020-07-30 21:10:29 -04:00
ufs-debugfs.c scsi: ufs: core: Enable power management for wlun 2021-05-10 22:28:20 -04:00
ufs-debugfs.h scsi: ufs: core: Enable power management for wlun 2021-05-10 22:28:20 -04:00
ufs-exynos.c scsi: ufs: Reduce power management code duplication 2021-08-02 21:43:57 -04:00
ufs-exynos.h scsi: ufs: ufs-exynos: Move definitions from .h to .c 2021-05-21 16:07:23 -04:00
ufs-hisi.c scsi: ufs: Reduce power management code duplication 2021-08-02 21:43:57 -04:00
ufs-hisi.h scsi: ufs: ufs-hisi: Use device parameter initialization function 2020-11-17 01:03:18 -05:00
ufs-mediatek-trace.h scsi: ufs-mediatek: Use correct path to fix compile error 2020-12-09 12:00:26 -05:00
ufs-mediatek.c scsi: ufs: Reduce power management code duplication 2021-08-02 21:43:57 -04:00
ufs-mediatek.h scsi: ufs-mediatek: Keep VCC always-on for specific devices 2020-12-09 11:34:20 -05:00
ufs-qcom-ice.c scsi: ufs-qcom: Add Inline Crypto Engine support 2020-07-24 22:09:54 -04:00
ufs-qcom.c scsi: ufs: Reduce power management code duplication 2021-08-02 21:43:57 -04:00
ufs-qcom.h scsi: ufs: ufs-qcom: Use device parameter initialization function 2020-11-17 01:03:18 -05:00
ufs-sysfs.c scsi: ufs: ufshpb: Add HPB 2.0 support 2021-08-01 16:05:07 -04:00
ufs-sysfs.h scsi: ufs: sysfs: Use the correct style for SPDX License Identifier 2020-01-02 21:57:44 -05:00
ufs.h scsi: ufs: ufshpb: Add HPB 2.0 support 2021-08-01 16:05:07 -04:00
ufshcd-crypto.c SCSI misc on 20210219 2021-02-22 10:24:58 -08:00
ufshcd-crypto.h scsi: ufs: use devm_blk_ksm_init() 2021-02-01 12:01:56 +01:00
ufshcd-dwc.c scsi: ufs-dwc: Use phy_initialization helper 2020-12-07 18:00:06 -05:00
ufshcd-dwc.h
ufshcd-pci.c scsi: ufs: Reduce power management code duplication 2021-08-02 21:43:57 -04:00
ufshcd-pltfrm.c scsi: ufs: Reduce power management code duplication 2021-08-02 21:43:57 -04:00
ufshcd-pltfrm.h scsi: ufs: Reduce power management code duplication 2021-08-02 21:43:57 -04:00
ufshcd.c scsi: ufs: Revert "Utilize Transfer Request List Completion Notification Register" 2021-08-02 21:43:58 -04:00
ufshcd.h scsi: ufs: Revert "Utilize Transfer Request List Completion Notification Register" 2021-08-02 21:43:58 -04:00
ufshci-dwc.h
ufshci.h scsi: ufs: Revert "Utilize Transfer Request List Completion Notification Register" 2021-08-02 21:43:58 -04:00
ufshpb.c scsi: ufs: ufshpb: Make host mode parameters configurable 2021-08-01 16:05:15 -04:00
ufshpb.h scsi: ufs: ufshpb: Make host mode parameters configurable 2021-08-01 16:05:15 -04:00
unipro.h scsi: ufs: Add enums for UniPro version higher than 1.6 2020-11-10 23:03:18 -05:00