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HID's execution policy is given to user-space. Changelog === v1 - > v2: 1.Refactor the HID code according to Bart and Peter and Arvi's suggestions 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 | 195 +++++++++++++++++++++ drivers/ufs/core/ufshcd.c | 4 + include/ufs/ufs.h | 25 +++ 4 files changed, 307 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-driver-ufs b/Documentation/ABI/testing/sysfs-driver-ufs index d4140dc6c5ba..8c4678305f94 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/*/ufs_hid/hid_analysis_trigger +What: /sys/bus/platform/devices/*.ufs/ufs_hid/hid_analysis_trigger +Date: April 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/*/ufs_hid/hid_defrag_trigger +What: /sys/bus/platform/devices/*.ufs/ufs_hid/hid_defrag_trigger +Date: April 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/*/ufs_hid/hid_fragmented_size +What: /sys/bus/platform/devices/*.ufs/ufs_hid/hid_fragmented_size +Date: April 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/*/ufs_hid/hid_defrag_size +What: /sys/bus/platform/devices/*.ufs/ufs_hid/hid_defrag_size +Date: April 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/*/ufs_hid/hid_progress_ratio +What: /sys/bus/platform/devices/*.ufs/ufs_hid/hid_progress_ratio +Date: April 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/*/ufs_hid/hid_state +What: /sys/bus/platform/devices/*.ufs/ufs_hid/hid_state +Date: April 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..e993468b6a4e 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) { @@ -1780,6 +1800,167 @@ static const struct attribute_group *ufs_sysfs_groups[] = { NULL, }; +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 hid_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(hid_analysis_trigger); + +static ssize_t hid_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(hid_defrag_trigger); + +static ssize_t hid_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(hid_fragmented_size); + +static ssize_t hid_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 hid_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(hid_defrag_size); + +static ssize_t hid_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(hid_progress_ratio); + +static ssize_t hid_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(hid_state); + +static struct attribute *ufs_sysfs_ufs_hid[] = { + &dev_attr_hid_analysis_trigger.attr, + &dev_attr_hid_defrag_trigger.attr, + &dev_attr_hid_fragmented_size.attr, + &dev_attr_hid_defrag_size.attr, + &dev_attr_hid_progress_ratio.attr, + &dev_attr_hid_state.attr, + NULL, +}; + +static const struct attribute_group ufs_sysfs_ufs_hid_group = { + .name = "ufs_hid", + .attrs = ufs_sysfs_ufs_hid, +}; + #define UFS_LUN_DESC_PARAM(_pname, _puname, _duname, _size) \ static ssize_t _pname##_show(struct device *dev, \ struct device_attribute *attr, char *buf) \ @@ -1898,6 +2079,7 @@ const struct attribute_group ufs_sysfs_lun_attributes_group = { void ufs_sysfs_add_nodes(struct device *dev) { + struct ufs_hba *hba = dev_get_drvdata(dev); int ret; ret = sysfs_create_groups(&dev->kobj, ufs_sysfs_groups); @@ -1905,9 +2087,22 @@ void ufs_sysfs_add_nodes(struct device *dev) dev_err(dev, "%s: sysfs groups creation failed (err = %d)\n", __func__, ret); + + if (hba->dev_info.hid_sup) { + ret = sysfs_create_group(&dev->kobj, &ufs_sysfs_ufs_hid_group); + if (ret) + dev_err(dev, + "%s: sysfs ufs_hid group creation failed (err = %d)\n", + __func__, ret); + } } void ufs_sysfs_remove_nodes(struct device *dev) { + struct ufs_hba *hba = dev_get_drvdata(dev); + sysfs_remove_groups(&dev->kobj, ufs_sysfs_groups); + + if (hba->dev_info.hid_sup) + sysfs_remove_group(&dev->kobj, &ufs_sysfs_ufs_hid_group); } diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index dc55c94fa45e..fb67eb582826 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -8392,6 +8392,10 @@ 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; }; /*