diff options
Diffstat (limited to 'drivers/scsi/ufs/ufs_quirks.h')
-rw-r--r-- | drivers/scsi/ufs/ufs_quirks.h | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/drivers/scsi/ufs/ufs_quirks.h b/drivers/scsi/ufs/ufs_quirks.h deleted file mode 100644 index bcb4f004bed5..000000000000 --- a/drivers/scsi/ufs/ufs_quirks.h +++ /dev/null @@ -1,116 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * Copyright (c) 2014-2016, The Linux Foundation. All rights reserved. - */ - -#ifndef _UFS_QUIRKS_H_ -#define _UFS_QUIRKS_H_ - -/* return true if s1 is a prefix of s2 */ -#define STR_PRFX_EQUAL(s1, s2) !strncmp(s1, s2, strlen(s1)) - -#define UFS_ANY_VENDOR 0xFFFF -#define UFS_ANY_MODEL "ANY_MODEL" - -#define UFS_VENDOR_MICRON 0x12C -#define UFS_VENDOR_SAMSUNG 0x1CE -#define UFS_VENDOR_SKHYNIX 0x1AD -#define UFS_VENDOR_TOSHIBA 0x198 -#define UFS_VENDOR_WDC 0x145 - -/** - * ufs_dev_quirk - ufs device quirk info - * @card: ufs card details - * @quirk: device quirk - */ -struct ufs_dev_quirk { - u16 wmanufacturerid; - const u8 *model; - unsigned int quirk; -}; - -/* - * Some vendor's UFS device sends back to back NACs for the DL data frames - * causing the host controller to raise the DFES error status. Sometimes - * such UFS devices send back to back NAC without waiting for new - * retransmitted DL frame from the host and in such cases it might be possible - * the Host UniPro goes into bad state without raising the DFES error - * interrupt. If this happens then all the pending commands would timeout - * only after respective SW command (which is generally too large). - * - * We can workaround such device behaviour like this: - * - As soon as SW sees the DL NAC error, it should schedule the error handler - * - Error handler would sleep for 50ms to see if there are any fatal errors - * raised by UFS controller. - * - If there are fatal errors then SW does normal error recovery. - * - If there are no fatal errors then SW sends the NOP command to device - * to check if link is alive. - * - If NOP command times out, SW does normal error recovery - * - If NOP command succeed, skip the error handling. - * - * If DL NAC error is seen multiple times with some vendor's UFS devices then - * enable this quirk to initiate quick error recovery and also silence related - * error logs to reduce spamming of kernel logs. - */ -#define UFS_DEVICE_QUIRK_RECOVERY_FROM_DL_NAC_ERRORS (1 << 2) - -/* - * Few Toshiba UFS device models advertise RX_MIN_ACTIVATETIME_CAPABILITY as - * 600us which may not be enough for reliable hibern8 exit hardware sequence - * from UFS device. - * To workaround this issue, host should set its PA_TACTIVATE time to 1ms even - * if device advertises RX_MIN_ACTIVATETIME_CAPABILITY less than 1ms. - */ -#define UFS_DEVICE_QUIRK_PA_TACTIVATE (1 << 4) - -/* - * It seems some UFS devices may keep drawing more than sleep current - * (atleast for 500us) from UFS rails (especially from VCCQ rail). - * To avoid this situation, add 2ms delay before putting these UFS - * rails in LPM mode. - */ -#define UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM (1 << 6) - -/* - * Some UFS devices require host PA_TACTIVATE to be lower than device - * PA_TACTIVATE, enabling this quirk ensure this. - */ -#define UFS_DEVICE_QUIRK_HOST_PA_TACTIVATE (1 << 7) - -/* - * The max. value PA_SaveConfigTime is 250 (10us) but this is not enough for - * some vendors. - * Gear switch from PWM to HS may fail even with this max. PA_SaveConfigTime. - * Gear switch can be issued by host controller as an error recovery and any - * software delay will not help on this case so we need to increase - * PA_SaveConfigTime to >32us as per vendor recommendation. - */ -#define UFS_DEVICE_QUIRK_HOST_PA_SAVECONFIGTIME (1 << 8) - -/* - * Some UFS devices require VS_DebugSaveConfigTime is 0x10, - * enabling this quirk ensure this. - */ -#define UFS_DEVICE_QUIRK_HOST_VS_DEBUGSAVECONFIGTIME (1 << 9) - -/* - * Some pre-3.1 UFS devices can support extended features by upgrading - * the firmware. Enable this quirk to make UFS core driver probe and enable - * supported features on such devices. - */ -#define UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES (1 << 10) - -/* - * Some UFS devices require delay after VCC power rail is turned-off. - * Enable this quirk to introduce 5ms delays after VCC power-off during - * suspend flow. - */ -#define UFS_DEVICE_QUIRK_DELAY_AFTER_LPM (1 << 11) - -/* - * Some UFS devices require L2P entry should be swapped before being sent to the - * UFS device for HPB READ command. - */ -#define UFS_DEVICE_QUIRK_SWAP_L2P_ENTRY_FOR_HPB_READ (1 << 12) - -#endif /* UFS_QUIRKS_H_ */ |