diff options
Diffstat (limited to 'drivers/ufs/core/ufs-sysfs.c')
| -rw-r--r-- | drivers/ufs/core/ufs-sysfs.c | 330 |
1 files changed, 327 insertions, 3 deletions
diff --git a/drivers/ufs/core/ufs-sysfs.c b/drivers/ufs/core/ufs-sysfs.c index 634cf163f4cb..4bd7d491e3c5 100644 --- a/drivers/ufs/core/ufs-sysfs.c +++ b/drivers/ufs/core/ufs-sysfs.c @@ -5,6 +5,7 @@ #include <linux/string.h> #include <linux/bitfield.h> #include <linux/unaligned.h> +#include <linux/string_choices.h> #include <ufs/ufs.h> #include <ufs/unipro.h> @@ -57,6 +58,53 @@ static const char *ufs_hs_gear_to_string(enum ufs_hs_gear_tag gear) } } +static const char *ufs_wb_resize_hint_to_string(enum wb_resize_hint hint) +{ + switch (hint) { + case WB_RESIZE_HINT_KEEP: + return "keep"; + case WB_RESIZE_HINT_DECREASE: + return "decrease"; + case WB_RESIZE_HINT_INCREASE: + return "increase"; + default: + return "unknown"; + } +} + +static const char *ufs_wb_resize_status_to_string(enum wb_resize_status status) +{ + switch (status) { + case WB_RESIZE_STATUS_IDLE: + return "idle"; + case WB_RESIZE_STATUS_IN_PROGRESS: + return "in_progress"; + case WB_RESIZE_STATUS_COMPLETE_SUCCESS: + return "complete_success"; + case WB_RESIZE_STATUS_GENERAL_FAILURE: + return "general_failure"; + default: + return "unknown"; + } +} + +static const char * const ufs_hid_states[] = { + [HID_IDLE] = "idle", + [ANALYSIS_IN_PROGRESS] = "analysis_in_progress", + [DEFRAG_REQUIRED] = "defrag_required", + [DEFRAG_IN_PROGRESS] = "defrag_in_progress", + [DEFRAG_COMPLETED] = "defrag_completed", + [DEFRAG_NOT_REQUIRED] = "defrag_not_required", +}; + +static const char *ufs_hid_state_to_string(enum ufs_hid_state state) +{ + if (state < NUM_UFS_HID_STATES) + return ufs_hid_states[state]; + + return "unknown"; +} + static const char *ufshcd_uic_link_state_to_string( enum uic_link_state state) { @@ -411,6 +459,44 @@ static ssize_t wb_flush_threshold_store(struct device *dev, return count; } +static const char * const wb_resize_en_mode[] = { + [WB_RESIZE_EN_IDLE] = "idle", + [WB_RESIZE_EN_DECREASE] = "decrease", + [WB_RESIZE_EN_INCREASE] = "increase", +}; + +static ssize_t wb_resize_enable_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct ufs_hba *hba = dev_get_drvdata(dev); + int mode; + ssize_t res; + + if (!ufshcd_is_wb_allowed(hba) || !hba->dev_info.wb_enabled + || !hba->dev_info.b_presrv_uspc_en + || !(hba->dev_info.ext_wb_sup & UFS_DEV_WB_BUF_RESIZE)) + return -EOPNOTSUPP; + + mode = sysfs_match_string(wb_resize_en_mode, buf); + if (mode < 0) + return -EINVAL; + + down(&hba->host_sem); + if (!ufshcd_is_user_access_allowed(hba)) { + res = -EBUSY; + goto out; + } + + ufshcd_rpm_get_sync(hba); + res = ufshcd_wb_set_resize_en(hba, mode); + ufshcd_rpm_put_sync(hba); + +out: + up(&hba->host_sem); + return res < 0 ? res : count; +} + /** * pm_qos_enable_show - sysfs handler to show pm qos enable value * @dev: device associated with the UFS controller @@ -526,6 +612,7 @@ static DEVICE_ATTR_RW(auto_hibern8); static DEVICE_ATTR_RW(wb_on); static DEVICE_ATTR_RW(enable_wb_buf_flush); static DEVICE_ATTR_RW(wb_flush_threshold); +static DEVICE_ATTR_WO(wb_resize_enable); static DEVICE_ATTR_RW(rtc_update_ms); static DEVICE_ATTR_RW(pm_qos_enable); static DEVICE_ATTR_RO(critical_health); @@ -543,6 +630,7 @@ static struct attribute *ufs_sysfs_ufshcd_attrs[] = { &dev_attr_wb_on.attr, &dev_attr_enable_wb_buf_flush.attr, &dev_attr_wb_flush_threshold.attr, + &dev_attr_wb_resize_enable.attr, &dev_attr_rtc_update_ms.attr, &dev_attr_pm_qos_enable.attr, &dev_attr_critical_health.attr, @@ -1429,7 +1517,7 @@ static ssize_t _name##_show(struct device *dev, \ ret = -EINVAL; \ goto out; \ } \ - ret = sysfs_emit(buf, "%s\n", flag ? "true" : "false"); \ + ret = sysfs_emit(buf, "%s\n", str_true_false(flag)); \ out: \ up(&hba->host_sem); \ return ret; \ @@ -1549,6 +1637,67 @@ static inline bool ufshcd_is_wb_attrs(enum attr_idn idn) idn <= QUERY_ATTR_IDN_CURR_WB_BUFF_SIZE; } +static int wb_read_resize_attrs(struct ufs_hba *hba, + enum attr_idn idn, u32 *attr_val) +{ + u8 index = 0; + int ret; + + if (!ufshcd_is_wb_allowed(hba) || !hba->dev_info.wb_enabled + || !hba->dev_info.b_presrv_uspc_en + || !(hba->dev_info.ext_wb_sup & UFS_DEV_WB_BUF_RESIZE)) + return -EOPNOTSUPP; + + down(&hba->host_sem); + if (!ufshcd_is_user_access_allowed(hba)) { + up(&hba->host_sem); + return -EBUSY; + } + + index = ufshcd_wb_get_query_index(hba); + ufshcd_rpm_get_sync(hba); + ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR, + idn, index, 0, attr_val); + ufshcd_rpm_put_sync(hba); + + up(&hba->host_sem); + return ret; +} + +static ssize_t wb_resize_hint_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ufs_hba *hba = dev_get_drvdata(dev); + int ret; + u32 value; + + ret = wb_read_resize_attrs(hba, + QUERY_ATTR_IDN_WB_BUF_RESIZE_HINT, &value); + if (ret) + return ret; + + return sysfs_emit(buf, "%s\n", ufs_wb_resize_hint_to_string(value)); +} + +static DEVICE_ATTR_RO(wb_resize_hint); + +static ssize_t wb_resize_status_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ufs_hba *hba = dev_get_drvdata(dev); + int ret; + u32 value; + + ret = wb_read_resize_attrs(hba, + QUERY_ATTR_IDN_WB_BUF_RESIZE_STATUS, &value); + if (ret) + return ret; + + return sysfs_emit(buf, "%s\n", ufs_wb_resize_status_to_string(value)); +} + +static DEVICE_ATTR_RO(wb_resize_status); + #define UFS_ATTRIBUTE(_name, _uname) \ static ssize_t _name##_show(struct device *dev, \ struct device_attribute *attr, char *buf) \ @@ -1622,6 +1771,8 @@ static struct attribute *ufs_sysfs_attributes[] = { &dev_attr_wb_avail_buf.attr, &dev_attr_wb_life_time_est.attr, &dev_attr_wb_cur_buf.attr, + &dev_attr_wb_resize_hint.attr, + &dev_attr_wb_resize_status.attr, NULL, }; @@ -1630,6 +1781,178 @@ 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 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; + + if (sysfs_streq(buf, "enable")) + mode = HID_ANALYSIS_ENABLE; + else if (sysfs_streq(buf, "disable")) + mode = HID_ANALYSIS_AND_DEFRAG_DISABLE; + else + 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; + + if (sysfs_streq(buf, "enable")) + mode = HID_ANALYSIS_AND_DEFRAG_ENABLE; + else if (sysfs_streq(buf, "disable")) + mode = HID_ANALYSIS_AND_DEFRAG_DISABLE; + else + 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(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, @@ -1644,6 +1967,7 @@ 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, }; @@ -1675,7 +1999,7 @@ UFS_UNIT_DESC_PARAM(logical_block_size, _LOGICAL_BLK_SIZE, 1); UFS_UNIT_DESC_PARAM(logical_block_count, _LOGICAL_BLK_COUNT, 8); UFS_UNIT_DESC_PARAM(erase_block_size, _ERASE_BLK_SIZE, 4); UFS_UNIT_DESC_PARAM(provisioning_type, _PROVISIONING_TYPE, 1); -UFS_UNIT_DESC_PARAM(physical_memory_resourse_count, _PHY_MEM_RSRC_CNT, 8); +UFS_UNIT_DESC_PARAM(physical_memory_resource_count, _PHY_MEM_RSRC_CNT, 8); UFS_UNIT_DESC_PARAM(context_capabilities, _CTX_CAPABILITIES, 2); UFS_UNIT_DESC_PARAM(large_unit_granularity, _LARGE_UNIT_SIZE_M1, 1); UFS_UNIT_DESC_PARAM(wb_buf_alloc_units, _WB_BUF_ALLOC_UNITS, 4); @@ -1692,7 +2016,7 @@ static struct attribute *ufs_sysfs_unit_descriptor[] = { &dev_attr_logical_block_count.attr, &dev_attr_erase_block_size.attr, &dev_attr_provisioning_type.attr, - &dev_attr_physical_memory_resourse_count.attr, + &dev_attr_physical_memory_resource_count.attr, &dev_attr_context_capabilities.attr, &dev_attr_large_unit_granularity.attr, &dev_attr_wb_buf_alloc_units.attr, |