user/sven/linux.git/include/ufs, branch v6.16.2

Merge branch '6.15/scsi-fixes' into 6.16/scsi-staging

2025-04-29T00:56:57Z

Pull in fixes from 6.15 and resolve a few conflicts so we can have a clean base for UFS patches. Signed-off-by: Martin K. Petersen

scsi: ufs: Introduce quirk to extend PA_HIBERN8TIME for UFS devices

2025-04-12T02:13:00Z

Samsung UFS devices require additional time in hibern8 mode before exiting, beyond the negotiated handshaking phase between the host and device. Introduce a quirk to increase the PA_HIBERN8TIME parameter by 100 µs, a value derived from experiments, to ensure a proper hibernation process. Signed-off-by: Manish Pandey Link: https://lore.kernel.org/r/20250411121630.21330-3-quic_mapa@quicinc.com Reviewed-by: Bean Huo Reviewed-by: Manivannan Sadhasivam Signed-off-by: Martin K. Petersen

scsi: ufs: core: Add WB buffer resize support

2025-04-12T01:38:06Z

Follow JESD220G, support a WB buffer resize function through sysfs. The host can obtain resize hint and resize status, and enable the resize operation. Add three sysfs nodes: 1. wb_resize_enable 2. wb_resize_hint 3. wb_resize_status The detailed definition of the three nodes can be found in the sysfs documentation. Signed-off-by: Huan Tang Signed-off-by: Lu Hongfei Link: https://lore.kernel.org/r/20250411092924.1116-1-tanghuan@vivo.com Reviewed-by: Bart Van Assche Signed-off-by: Martin K. Petersen

scsi: ufs: core: Track when MCQ ESI is enabled

2025-04-12T01:23:12Z

In preparation of adding a threaded interrupt handler, track when the MCQ ESI interrupt handlers were installed so we can optimize the MCQ interrupt handling to avoid walking the threaded handler in the case ESI handlers are enabled. Signed-off-by: Neil Armstrong Link: https://lore.kernel.org/r/20250407-topic-ufs-use-threaded-irq-v3-2-08bee980f71e@linaro.org Reviewed-by: Bart Van Assche Signed-off-by: Martin K. Petersen

scsi: ufs: core: Drop last_intr_status/ts stats

2025-04-12T01:23:12Z

In order to prepare introduction of a threaded interrupt handler, drop last_intr_status & last_intr_ts drop the ufs_stats struct, and the associated debug code. Suggested-by: Bart Van Assche Reviewed-by: Bart Van Assche Signed-off-by: Neil Armstrong Link: https://lore.kernel.org/r/20250407-topic-ufs-use-threaded-irq-v3-1-08bee980f71e@linaro.org Signed-off-by: Martin K. Petersen

scsi: ufs: core: Add device level exception support

2025-04-03T14:54:31Z

The ufs device JEDEC specification version 4.1 adds support for the device level exception events. To support this new device level exception feature, expose two new sysfs nodes below to provide the user space access to the device level exception information. /sys/bus/platform/drivers/ufshcd/*/device_lvl_exception_count /sys/bus/platform/drivers/ufshcd/*/device_lvl_exception_id The device_lvl_exception_count sysfs node reports the number of device level exceptions that have occurred since the last time this variable is reset. Writing a value of 0 will reset it. The device_lvl_exception_id reports the exception ID which is the qDeviceLevelExceptionID attribute of the device JEDEC specifications version 4.1 and later. The user space application can query these sysfs nodes to get more information about the device level exception. Signed-off-by: Bao D. Nguyen Link: https://lore.kernel.org/r/6278d7c125b2f0cf5056f4a647a4b9c1fdd24fc7.1743198325.git.quic_nguyenb@quicinc.com Reviewed-by: Peter Wang Reviewed-by: Bart Van Assche Reviewed-by: Arthur Simchaev Signed-off-by: Martin K. Petersen

scsi: ufs: core: Fix a race condition related to device commands

2025-03-21T00:48:37Z

There is a TOCTOU race in ufshcd_compl_one_cqe(): hba->dev_cmd.complete may be cleared from another thread after it has been checked and before it is used. Fix this race by moving the device command completion from the stack of the device command submitter into struct ufs_hba. This patch fixes the following kernel crash: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008 Call trace: _raw_spin_lock_irqsave+0x34/0x80 complete+0x24/0xb8 ufshcd_compl_one_cqe+0x13c/0x4f0 ufshcd_mcq_poll_cqe_lock+0xb4/0x108 ufshcd_intr+0x2f4/0x444 __handle_irq_event_percpu+0xbc/0x250 handle_irq_event+0x48/0xb0 Fixes: 5a0b0cb9bee7 ("[SCSI] ufs: Add support for sending NOP OUT UPIU") Signed-off-by: Bart Van Assche Link: https://lore.kernel.org/r/20250314225206.1487838-1-bvanassche@acm.org Reviewed-by: Peter Wang Signed-off-by: Martin K. Petersen

Merge patch series "Initial support for RK3576 UFS controller"

2025-02-25T00:24:14Z

Shawn Lin says: This patchset adds initial UFS controller supprt for RK3576 SoC. Patch 1 is the dt-bindings. Patch 2-4 deal with rpm and spm support in advanced suggested by Ulf. Patch 5 exports two new APIs for host driver. Patch 6 and 7 are the host driver and dtsi support. Link: https://lore.kernel.org/r/1738736156-119203-1-git-send-email-shawn.lin@rock-chips.com Signed-off-by: Martin K. Petersen

scsi: ufs: core: Export ufshcd_dme_reset() and ufshcd_dme_enable()

2025-02-25T00:18:44Z

These two APIs will be used by glue driver if they need a different HCE process. Reviewed-by: Manivannan Sadhasivam Signed-off-by: Shawn Lin Link: https://lore.kernel.org/r/1738736156-119203-6-git-send-email-shawn.lin@rock-chips.com Reviewed-by: Bart Van Assche Signed-off-by: Martin K. Petersen

Merge patch series "Support Multi-frequency scale for UFS"

2025-02-21T03:11:11Z

Ziqi Chen says: With OPP V2 enabled, devfreq can scale clocks amongst multiple frequency plans. However, the gear speed is only toggled between min and max during clock scaling. Enable multi-level gear scaling by mapping clock frequencies to gear speeds, so that when devfreq scales clock frequencies we can put the UFS link at the appropraite gear speeds accordingly. This series has been tested on below platforms - sm8550 mtp + UFS3.1 SM8650 MTP + UFS3.1 SM8750 MTP + UFS4.0 Tested-by: Neil Armstrong # on SM8550-QRD Tested-by: Neil Armstrong # on SM8550-HDK Tested-by: Neil Armstrong # on SM8650-HDK Link: https://lore.kernel.org/r/20250213080008.2984807-1-quic_ziqichen@quicinc.com Signed-off-by: Martin K. Petersen