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HID's execution policy is given to user-space. Changelog === v2 - > v3: 1.Remove the "ufs_" prefix from directory name 2.Remove the "hid_" prefix from node names 3.Make "ufs" appear only once in the HID group name 4.Add "is_visible" callback for "ufs_sysfs_hid_group" v1 - > v2: 1.Refactor the HID code according to Bart and Peter and Arvi's suggestions v2 https://lore.kernel.org/all/20250512131519.138-1-tanghuan@vivo.com/ v1 https://lore.kernel.org/all/20250417125008.123-1-tanghuan@vivo.com/ Signed-off-by: Huan Tang Signed-off-by: Wenxing Cheng --- Documentation/ABI/testing/sysfs-driver-ufs | 83 +++++++++ drivers/ufs/core/ufs-sysfs.c | 192 +++++++++++++++++++++ drivers/ufs/core/ufshcd.c | 4 + include/ufs/ufs.h | 25 +++ 4 files changed, 304 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-driver-ufs b/Documentation/ABI/testing/sysfs-driver-ufs index d4140dc6c5ba..24485df80ccb 100644 --- a/Documentation/ABI/testing/sysfs-driver-ufs +++ b/Documentation/ABI/testing/sysfs-driver-ufs @@ -1685,3 +1685,86 @@ Description: ================ ======================================== The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/hid/analysis_trigger +What: /sys/bus/platform/devices/*.ufs/hid/analysis_trigger +Date: May 2025 +Contact: Huan Tang +Description: + The host can enable or disable HID analysis operation. + + ======= ========================================= + disable disable HID analysis operation + enable enable HID analysis operation + ======= ========================================= + + The file is write only. + +What: /sys/bus/platform/drivers/ufshcd/*/hid/defrag_trigger +What: /sys/bus/platform/devices/*.ufs/hid/defrag_trigger +Date: May 2025 +Contact: Huan Tang +Description: + The host can enable or disable HID defragmentation operation. + + ======= ========================================= + disable disable HID defragmentation operation + enable enable HID defragmentation operation + ======= ========================================= + + The attribute is write only. + +What: /sys/bus/platform/drivers/ufshcd/*/hid/fragmented_size +What: /sys/bus/platform/devices/*.ufs/hid/fragmented_size +Date: May 2025 +Contact: Huan Tang +Description: + The total fragmented size in the device is reported through + this attribute. + + The attribute is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/hid/defrag_size +What: /sys/bus/platform/devices/*.ufs/hid/defrag_size +Date: May 2025 +Contact: Huan Tang +Description: + The host sets the size to be defragmented by an HID + defragmentation operation. + + The attribute is read/write. + +What: /sys/bus/platform/drivers/ufshcd/*/hid/progress_ratio +What: /sys/bus/platform/devices/*.ufs/hid/progress_ratio +Date: May 2025 +Contact: Huan Tang +Description: + Defragmentation progress is reported by this attribute, + indicateds the ratio of the completed defragmentation size + over the requested defragmentation size. + + ==== ============================================ + 1 1% + ... + 100 100% + ==== ============================================ + + The attribute is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/hid/state +What: /sys/bus/platform/devices/*.ufs/hid/state +Date: May 2025 +Contact: Huan Tang +Description: + The HID state is reported by this attribute. + + ==================== =========================== + idle Idle(analysis required) + analysis_in_progress Analysis in progress + defrag_required Defrag required + defrag_in_progress Defrag in progress + defrag_completed Defrag completed + defrag_not_required Defrag is not required + ==================== =========================== + + The attribute is read only. diff --git a/drivers/ufs/core/ufs-sysfs.c b/drivers/ufs/core/ufs-sysfs.c index de8b6acd4058..ba6371740b30 100644 --- a/drivers/ufs/core/ufs-sysfs.c +++ b/drivers/ufs/core/ufs-sysfs.c @@ -87,6 +87,26 @@ static const char *ufs_wb_resize_status_to_string(enum wb_resize_status status) } } +static const char *ufs_hid_state_to_string(enum ufs_hid_state state) +{ + switch (state) { + case HID_IDLE: + return "idle"; + case ANALYSIS_IN_PROGRESS: + return "analysis_in_progress"; + case DEFRAG_REQUIRED: + return "defrag_required"; + case DEFRAG_IN_PROGRESS: + return "defrag_in_progress"; + case DEFRAG_COMPLETED: + return "defrag_completed"; + case DEFRAG_IS_NOT_REQUIRED: + return "defrag_not_required"; + default: + return "unknown"; + } +} + static const char *ufshcd_uic_link_state_to_string( enum uic_link_state state) { @@ -1763,6 +1783,177 @@ static const struct attribute_group ufs_sysfs_attributes_group = { .attrs = ufs_sysfs_attributes, }; +static int hid_query_attr(struct ufs_hba *hba, enum query_opcode opcode, + enum attr_idn idn, u32 *attr_val) +{ + int ret; + + down(&hba->host_sem); + if (!ufshcd_is_user_access_allowed(hba)) { + up(&hba->host_sem); + return -EBUSY; + } + + ufshcd_rpm_get_sync(hba); + ret = ufshcd_query_attr(hba, opcode, idn, 0, 0, attr_val); + ufshcd_rpm_put_sync(hba); + + up(&hba->host_sem); + return ret; +} + +static const char * const hid_trigger_mode[] = {"disable", "enable"}; + +static ssize_t analysis_trigger_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct ufs_hba *hba = dev_get_drvdata(dev); + int mode; + int ret; + + mode = sysfs_match_string(hid_trigger_mode, buf); + if (mode < 0) + return -EINVAL; + + ret = hid_query_attr(hba, UPIU_QUERY_OPCODE_WRITE_ATTR, + QUERY_ATTR_IDN_HID_DEFRAG_OPERATION, &mode); + + return ret < 0 ? ret : count; +} + +static DEVICE_ATTR_WO(analysis_trigger); + +static ssize_t defrag_trigger_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct ufs_hba *hba = dev_get_drvdata(dev); + int mode; + int ret; + + mode = sysfs_match_string(hid_trigger_mode, buf); + if (mode < 0) + return -EINVAL; + + if (mode) + mode = HID_ANALYSIS_AND_DEFRAG_ENABLE; + + ret = hid_query_attr(hba, UPIU_QUERY_OPCODE_WRITE_ATTR, + QUERY_ATTR_IDN_HID_DEFRAG_OPERATION, &mode); + + return ret < 0 ? ret : count; +} + +static DEVICE_ATTR_WO(defrag_trigger); + +static ssize_t fragmented_size_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ufs_hba *hba = dev_get_drvdata(dev); + u32 value; + int ret; + + ret = hid_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR, + QUERY_ATTR_IDN_HID_AVAILABLE_SIZE, &value); + if (ret) + return ret; + + return sysfs_emit(buf, "%u\n", value); +} + +static DEVICE_ATTR_RO(fragmented_size); + +static ssize_t defrag_size_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ufs_hba *hba = dev_get_drvdata(dev); + u32 value; + int ret; + + ret = hid_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR, + QUERY_ATTR_IDN_HID_SIZE, &value); + if (ret) + return ret; + + return sysfs_emit(buf, "%u\n", value); +} + +static ssize_t defrag_size_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct ufs_hba *hba = dev_get_drvdata(dev); + u32 value; + int ret; + + if (kstrtou32(buf, 0, &value)) + return -EINVAL; + + ret = hid_query_attr(hba, UPIU_QUERY_OPCODE_WRITE_ATTR, + QUERY_ATTR_IDN_HID_SIZE, &value); + + return ret < 0 ? ret : count; +} + +static DEVICE_ATTR_RW(defrag_size); + +static ssize_t progress_ratio_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ufs_hba *hba = dev_get_drvdata(dev); + u32 value; + int ret; + + ret = hid_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR, + QUERY_ATTR_IDN_HID_PROGRESS_RATIO, &value); + if (ret) + return ret; + + return sysfs_emit(buf, "%u\n", value); +} + +static DEVICE_ATTR_RO(progress_ratio); + +static ssize_t state_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ufs_hba *hba = dev_get_drvdata(dev); + u32 value; + int ret; + + ret = hid_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR, + QUERY_ATTR_IDN_HID_STATE, &value); + if (ret) + return ret; + + return sysfs_emit(buf, "%s\n", ufs_hid_state_to_string(value)); +} + +static DEVICE_ATTR_RO(state); + +static struct attribute *ufs_sysfs_hid[] = { + &dev_attr_analysis_trigger.attr, + &dev_attr_defrag_trigger.attr, + &dev_attr_fragmented_size.attr, + &dev_attr_defrag_size.attr, + &dev_attr_progress_ratio.attr, + &dev_attr_state.attr, + NULL, +}; + +static umode_t ufs_sysfs_hid_is_visible(struct kobject *kobj, + struct attribute *attr, int n) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct ufs_hba *hba = dev_get_drvdata(dev); + + return hba->dev_info.hid_sup ? attr->mode : 0; +} + +static const struct attribute_group ufs_sysfs_hid_group = { + .name = "hid", + .attrs = ufs_sysfs_hid, + .is_visible = ufs_sysfs_hid_is_visible, +}; + static const struct attribute_group *ufs_sysfs_groups[] = { &ufs_sysfs_default_group, &ufs_sysfs_capabilities_group, @@ -1777,6 +1968,7 @@ static const struct attribute_group *ufs_sysfs_groups[] = { &ufs_sysfs_string_descriptors_group, &ufs_sysfs_flags_group, &ufs_sysfs_attributes_group, + &ufs_sysfs_hid_group, NULL, }; diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 3e2097e65964..8ccd923a5761 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -8390,6 +8390,10 @@ static int ufs_get_device_desc(struct ufs_hba *hba) dev_info->rtt_cap = desc_buf[DEVICE_DESC_PARAM_RTT_CAP]; + dev_info->hid_sup = get_unaligned_be32(desc_buf + + DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP) & + UFS_DEV_HID_SUPPORT; + model_index = desc_buf[DEVICE_DESC_PARAM_PRDCT_NAME]; err = ufshcd_read_string_desc(hba, model_index, diff --git a/include/ufs/ufs.h b/include/ufs/ufs.h index c0c59a8f7256..e61caa40f7cd 100644 --- a/include/ufs/ufs.h +++ b/include/ufs/ufs.h @@ -182,6 +182,11 @@ enum attr_idn { QUERY_ATTR_IDN_CURR_WB_BUFF_SIZE = 0x1F, QUERY_ATTR_IDN_TIMESTAMP = 0x30, QUERY_ATTR_IDN_DEV_LVL_EXCEPTION_ID = 0x34, + QUERY_ATTR_IDN_HID_DEFRAG_OPERATION = 0x35, + QUERY_ATTR_IDN_HID_AVAILABLE_SIZE = 0x36, + QUERY_ATTR_IDN_HID_SIZE = 0x37, + QUERY_ATTR_IDN_HID_PROGRESS_RATIO = 0x38, + QUERY_ATTR_IDN_HID_STATE = 0x39, QUERY_ATTR_IDN_WB_BUF_RESIZE_HINT = 0x3C, QUERY_ATTR_IDN_WB_BUF_RESIZE_EN = 0x3D, QUERY_ATTR_IDN_WB_BUF_RESIZE_STATUS = 0x3E, @@ -401,6 +406,7 @@ enum { UFS_DEV_HPB_SUPPORT = BIT(7), UFS_DEV_WRITE_BOOSTER_SUP = BIT(8), UFS_DEV_LVL_EXCEPTION_SUP = BIT(12), + UFS_DEV_HID_SUPPORT = BIT(13), }; #define UFS_DEV_HPB_SUPPORT_VERSION 0x310 @@ -466,6 +472,23 @@ enum ufs_ref_clk_freq { REF_CLK_FREQ_INVAL = -1, }; +/* bDefragOperation attribute values */ +enum ufs_hid_defrag_operation { + HID_ANALYSIS_AND_DEFRAG_DISABLE = 0, + HID_ANALYSIS_ENABLE = 1, + HID_ANALYSIS_AND_DEFRAG_ENABLE = 2, +}; + +/* bHIDState attribute values */ +enum ufs_hid_state { + HID_IDLE = 0, + ANALYSIS_IN_PROGRESS = 1, + DEFRAG_REQUIRED = 2, + DEFRAG_IN_PROGRESS = 3, + DEFRAG_COMPLETED = 4, + DEFRAG_IS_NOT_REQUIRED = 5, +}; + /* bWriteBoosterBufferResizeEn attribute */ enum wb_resize_en { WB_RESIZE_EN_IDLE = 0, @@ -625,6 +648,8 @@ struct ufs_dev_info { u32 rtc_update_period; u8 rtt_cap; /* bDeviceRTTCap */ + + bool hid_sup; }; /*