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path: root/drivers/ufs/core/ufs-sysfs.c
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Diffstat (limited to 'drivers/ufs/core/ufs-sysfs.c')
-rw-r--r--drivers/ufs/core/ufs-sysfs.c2107
1 files changed, 2107 insertions, 0 deletions
diff --git a/drivers/ufs/core/ufs-sysfs.c b/drivers/ufs/core/ufs-sysfs.c
new file mode 100644
index 000000000000..b33f8656edb5
--- /dev/null
+++ b/drivers/ufs/core/ufs-sysfs.c
@@ -0,0 +1,2107 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2018 Western Digital Corporation
+
+#include <linux/err.h>
+#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>
+#include "ufs-sysfs.h"
+#include "ufshcd-priv.h"
+
+static const char *ufs_pa_pwr_mode_to_string(enum ufs_pa_pwr_mode mode)
+{
+ switch (mode) {
+ case FAST_MODE: return "FAST_MODE";
+ case SLOW_MODE: return "SLOW_MODE";
+ case FASTAUTO_MODE: return "FASTAUTO_MODE";
+ case SLOWAUTO_MODE: return "SLOWAUTO_MODE";
+ default: return "UNKNOWN";
+ }
+}
+
+static const char *ufs_hs_gear_rate_to_string(enum ufs_hs_gear_rate rate)
+{
+ switch (rate) {
+ case PA_HS_MODE_A: return "HS_RATE_A";
+ case PA_HS_MODE_B: return "HS_RATE_B";
+ default: return "UNKNOWN";
+ }
+}
+
+static const char *ufs_pwm_gear_to_string(enum ufs_pwm_gear_tag gear)
+{
+ switch (gear) {
+ case UFS_PWM_G1: return "PWM_GEAR1";
+ case UFS_PWM_G2: return "PWM_GEAR2";
+ case UFS_PWM_G3: return "PWM_GEAR3";
+ case UFS_PWM_G4: return "PWM_GEAR4";
+ case UFS_PWM_G5: return "PWM_GEAR5";
+ case UFS_PWM_G6: return "PWM_GEAR6";
+ case UFS_PWM_G7: return "PWM_GEAR7";
+ default: return "UNKNOWN";
+ }
+}
+
+static const char *ufs_hs_gear_to_string(enum ufs_hs_gear_tag gear)
+{
+ switch (gear) {
+ case UFS_HS_G1: return "HS_GEAR1";
+ case UFS_HS_G2: return "HS_GEAR2";
+ case UFS_HS_G3: return "HS_GEAR3";
+ case UFS_HS_G4: return "HS_GEAR4";
+ case UFS_HS_G5: return "HS_GEAR5";
+ default: return "UNKNOWN";
+ }
+}
+
+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)
+{
+ switch (state) {
+ case UIC_LINK_OFF_STATE: return "OFF";
+ case UIC_LINK_ACTIVE_STATE: return "ACTIVE";
+ case UIC_LINK_HIBERN8_STATE: return "HIBERN8";
+ case UIC_LINK_BROKEN_STATE: return "BROKEN";
+ default: return "UNKNOWN";
+ }
+}
+
+static const char *ufshcd_ufs_dev_pwr_mode_to_string(
+ enum ufs_dev_pwr_mode state)
+{
+ switch (state) {
+ case UFS_ACTIVE_PWR_MODE: return "ACTIVE";
+ case UFS_SLEEP_PWR_MODE: return "SLEEP";
+ case UFS_POWERDOWN_PWR_MODE: return "POWERDOWN";
+ case UFS_DEEPSLEEP_PWR_MODE: return "DEEPSLEEP";
+ default: return "UNKNOWN";
+ }
+}
+
+static inline ssize_t ufs_sysfs_pm_lvl_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count,
+ bool rpm)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+ struct ufs_dev_info *dev_info = &hba->dev_info;
+ unsigned long flags, value;
+
+ if (kstrtoul(buf, 0, &value))
+ return -EINVAL;
+
+ if (value >= UFS_PM_LVL_MAX)
+ return -EINVAL;
+
+ if (ufs_pm_lvl_states[value].dev_state == UFS_DEEPSLEEP_PWR_MODE &&
+ (!(hba->caps & UFSHCD_CAP_DEEPSLEEP) ||
+ !(dev_info->wspecversion >= 0x310)))
+ return -EINVAL;
+
+ spin_lock_irqsave(hba->host->host_lock, flags);
+ if (rpm)
+ hba->rpm_lvl = value;
+ else
+ hba->spm_lvl = value;
+ spin_unlock_irqrestore(hba->host->host_lock, flags);
+ return count;
+}
+
+static ssize_t rpm_lvl_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%d\n", hba->rpm_lvl);
+}
+
+static ssize_t rpm_lvl_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ return ufs_sysfs_pm_lvl_store(dev, attr, buf, count, true);
+}
+
+static ssize_t rpm_target_dev_state_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%s\n", ufshcd_ufs_dev_pwr_mode_to_string(
+ ufs_pm_lvl_states[hba->rpm_lvl].dev_state));
+}
+
+static ssize_t rpm_target_link_state_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%s\n", ufshcd_uic_link_state_to_string(
+ ufs_pm_lvl_states[hba->rpm_lvl].link_state));
+}
+
+static ssize_t spm_lvl_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%d\n", hba->spm_lvl);
+}
+
+static ssize_t spm_lvl_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ return ufs_sysfs_pm_lvl_store(dev, attr, buf, count, false);
+}
+
+static ssize_t spm_target_dev_state_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%s\n", ufshcd_ufs_dev_pwr_mode_to_string(
+ ufs_pm_lvl_states[hba->spm_lvl].dev_state));
+}
+
+static ssize_t spm_target_link_state_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%s\n", ufshcd_uic_link_state_to_string(
+ ufs_pm_lvl_states[hba->spm_lvl].link_state));
+}
+
+/* Convert Auto-Hibernate Idle Timer register value to microseconds */
+static int ufshcd_ahit_to_us(u32 ahit)
+{
+ int timer = FIELD_GET(UFSHCI_AHIBERN8_TIMER_MASK, ahit);
+ int scale = FIELD_GET(UFSHCI_AHIBERN8_SCALE_MASK, ahit);
+
+ for (; scale > 0; --scale)
+ timer *= UFSHCI_AHIBERN8_SCALE_FACTOR;
+
+ return timer;
+}
+
+/* Convert microseconds to Auto-Hibernate Idle Timer register value */
+u32 ufshcd_us_to_ahit(unsigned int timer)
+{
+ unsigned int scale;
+
+ for (scale = 0; timer > UFSHCI_AHIBERN8_TIMER_MASK; ++scale)
+ timer /= UFSHCI_AHIBERN8_SCALE_FACTOR;
+
+ return FIELD_PREP(UFSHCI_AHIBERN8_TIMER_MASK, timer) |
+ FIELD_PREP(UFSHCI_AHIBERN8_SCALE_MASK, scale);
+}
+EXPORT_SYMBOL_GPL(ufshcd_us_to_ahit);
+
+static int ufshcd_read_hci_reg(struct ufs_hba *hba, u32 *val, unsigned int reg)
+{
+ down(&hba->host_sem);
+ if (!ufshcd_is_user_access_allowed(hba)) {
+ up(&hba->host_sem);
+ return -EBUSY;
+ }
+
+ ufshcd_rpm_get_sync(hba);
+ ufshcd_hold(hba);
+ *val = ufshcd_readl(hba, reg);
+ ufshcd_release(hba);
+ ufshcd_rpm_put_sync(hba);
+
+ up(&hba->host_sem);
+ return 0;
+}
+
+static ssize_t auto_hibern8_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ u32 ahit;
+ int ret;
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ if (!ufshcd_is_auto_hibern8_supported(hba))
+ return -EOPNOTSUPP;
+
+ ret = ufshcd_read_hci_reg(hba, &ahit, REG_AUTO_HIBERNATE_IDLE_TIMER);
+ if (ret)
+ return ret;
+
+ return sysfs_emit(buf, "%d\n", ufshcd_ahit_to_us(ahit));
+}
+
+static ssize_t auto_hibern8_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+ unsigned int timer;
+ int ret = 0;
+
+ if (!ufshcd_is_auto_hibern8_supported(hba))
+ return -EOPNOTSUPP;
+
+ if (kstrtouint(buf, 0, &timer))
+ return -EINVAL;
+
+ if (timer > UFSHCI_AHIBERN8_MAX)
+ return -EINVAL;
+
+ down(&hba->host_sem);
+ if (!ufshcd_is_user_access_allowed(hba)) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ ufshcd_auto_hibern8_update(hba, ufshcd_us_to_ahit(timer));
+
+out:
+ up(&hba->host_sem);
+ return ret ? ret : count;
+}
+
+static ssize_t wb_on_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%d\n", hba->dev_info.wb_enabled);
+}
+
+static ssize_t wb_on_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+ unsigned int wb_enable;
+ ssize_t res;
+
+ if (!ufshcd_is_wb_allowed(hba) || (ufshcd_is_clkscaling_supported(hba)
+ && ufshcd_enable_wb_if_scaling_up(hba))) {
+ /*
+ * If the platform supports UFSHCD_CAP_CLK_SCALING, turn WB
+ * on/off will be done while clock scaling up/down.
+ */
+ dev_warn(dev, "It is not allowed to configure WB!\n");
+ return -EOPNOTSUPP;
+ }
+
+ if (kstrtouint(buf, 0, &wb_enable))
+ return -EINVAL;
+
+ if (wb_enable != 0 && wb_enable != 1)
+ 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_toggle(hba, wb_enable);
+ ufshcd_rpm_put_sync(hba);
+out:
+ up(&hba->host_sem);
+ return res < 0 ? res : count;
+}
+
+static ssize_t rtc_update_ms_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%d\n", hba->dev_info.rtc_update_period);
+}
+
+static ssize_t rtc_update_ms_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+ unsigned int ms;
+ bool resume_period_update = false;
+
+ if (kstrtouint(buf, 0, &ms))
+ return -EINVAL;
+
+ if (!hba->dev_info.rtc_update_period && ms > 0)
+ resume_period_update = true;
+ /* Minimum and maximum update frequency should be synchronized with all UFS vendors */
+ hba->dev_info.rtc_update_period = ms;
+
+ if (resume_period_update)
+ schedule_delayed_work(&hba->ufs_rtc_update_work,
+ msecs_to_jiffies(hba->dev_info.rtc_update_period));
+ return count;
+}
+
+static ssize_t enable_wb_buf_flush_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%d\n", hba->dev_info.wb_buf_flush_enabled);
+}
+
+static ssize_t enable_wb_buf_flush_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+ unsigned int enable_wb_buf_flush;
+ ssize_t res;
+
+ if (!ufshcd_is_wb_buf_flush_allowed(hba)) {
+ dev_warn(dev, "It is not allowed to configure WB buf flushing!\n");
+ return -EOPNOTSUPP;
+ }
+
+ if (kstrtouint(buf, 0, &enable_wb_buf_flush))
+ return -EINVAL;
+
+ if (enable_wb_buf_flush != 0 && enable_wb_buf_flush != 1)
+ 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_toggle_buf_flush(hba, enable_wb_buf_flush);
+ ufshcd_rpm_put_sync(hba);
+
+out:
+ up(&hba->host_sem);
+ return res < 0 ? res : count;
+}
+
+static ssize_t wb_flush_threshold_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%u\n", hba->vps->wb_flush_threshold);
+}
+
+static ssize_t wb_flush_threshold_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+ unsigned int wb_flush_threshold;
+
+ if (kstrtouint(buf, 0, &wb_flush_threshold))
+ return -EINVAL;
+
+ /* The range of values for wb_flush_threshold is (0,10] */
+ if (wb_flush_threshold > UFS_WB_BUF_REMAIN_PERCENT(100) ||
+ wb_flush_threshold == 0) {
+ dev_err(dev, "The value of wb_flush_threshold is invalid!\n");
+ return -EINVAL;
+ }
+
+ hba->vps->wb_flush_threshold = wb_flush_threshold;
+
+ 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
+ * @attr: sysfs attribute handle
+ * @buf: buffer for sysfs file
+ *
+ * Print 1 if PM QoS feature is enabled, 0 if disabled.
+ *
+ * Returns number of characters written to @buf.
+ */
+static ssize_t pm_qos_enable_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ guard(mutex)(&hba->pm_qos_mutex);
+
+ return sysfs_emit(buf, "%d\n", hba->pm_qos_enabled);
+}
+
+/**
+ * pm_qos_enable_store - sysfs handler to store value
+ * @dev: device associated with the UFS controller
+ * @attr: sysfs attribute handle
+ * @buf: buffer for sysfs file
+ * @count: stores buffer characters count
+ *
+ * Input 0 to disable PM QoS and 1 value to enable.
+ * Default state: 1
+ *
+ * Return: number of characters written to @buf on success, < 0 upon failure.
+ */
+static ssize_t pm_qos_enable_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+ bool value;
+
+ if (kstrtobool(buf, &value))
+ return -EINVAL;
+
+ if (value)
+ ufshcd_pm_qos_init(hba);
+ else
+ ufshcd_pm_qos_exit(hba);
+
+ return count;
+}
+
+static ssize_t critical_health_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%d\n", hba->critical_health_count);
+}
+
+static ssize_t device_lvl_exception_count_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ if (hba->dev_info.wspecversion < 0x410)
+ return -EOPNOTSUPP;
+
+ return sysfs_emit(buf, "%u\n", atomic_read(&hba->dev_lvl_exception_count));
+}
+
+static ssize_t device_lvl_exception_count_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+ unsigned int value;
+
+ if (kstrtouint(buf, 0, &value))
+ return -EINVAL;
+
+ /* the only supported usecase is to reset the dev_lvl_exception_count */
+ if (value)
+ return -EINVAL;
+
+ atomic_set(&hba->dev_lvl_exception_count, 0);
+
+ return count;
+}
+
+static ssize_t device_lvl_exception_id_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+ u64 exception_id;
+ int err;
+
+ ufshcd_rpm_get_sync(hba);
+ err = ufshcd_read_device_lvl_exception_id(hba, &exception_id);
+ ufshcd_rpm_put_sync(hba);
+
+ if (err)
+ return err;
+
+ hba->dev_lvl_exception_id = exception_id;
+ return sysfs_emit(buf, "%llu\n", exception_id);
+}
+
+static DEVICE_ATTR_RW(rpm_lvl);
+static DEVICE_ATTR_RO(rpm_target_dev_state);
+static DEVICE_ATTR_RO(rpm_target_link_state);
+static DEVICE_ATTR_RW(spm_lvl);
+static DEVICE_ATTR_RO(spm_target_dev_state);
+static DEVICE_ATTR_RO(spm_target_link_state);
+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);
+static DEVICE_ATTR_RW(device_lvl_exception_count);
+static DEVICE_ATTR_RO(device_lvl_exception_id);
+
+static struct attribute *ufs_sysfs_ufshcd_attrs[] = {
+ &dev_attr_rpm_lvl.attr,
+ &dev_attr_rpm_target_dev_state.attr,
+ &dev_attr_rpm_target_link_state.attr,
+ &dev_attr_spm_lvl.attr,
+ &dev_attr_spm_target_dev_state.attr,
+ &dev_attr_spm_target_link_state.attr,
+ &dev_attr_auto_hibern8.attr,
+ &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,
+ &dev_attr_device_lvl_exception_count.attr,
+ &dev_attr_device_lvl_exception_id.attr,
+ NULL
+};
+
+static const struct attribute_group ufs_sysfs_default_group = {
+ .attrs = ufs_sysfs_ufshcd_attrs,
+};
+
+static ssize_t clock_scaling_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%d\n", ufshcd_is_clkscaling_supported(hba));
+}
+
+static ssize_t write_booster_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%d\n", ufshcd_is_wb_allowed(hba));
+}
+
+static DEVICE_ATTR_RO(clock_scaling);
+static DEVICE_ATTR_RO(write_booster);
+
+/*
+ * See Documentation/ABI/testing/sysfs-driver-ufs for the semantics of this
+ * group.
+ */
+static struct attribute *ufs_sysfs_capabilities_attrs[] = {
+ &dev_attr_clock_scaling.attr,
+ &dev_attr_write_booster.attr,
+ NULL
+};
+
+static const struct attribute_group ufs_sysfs_capabilities_group = {
+ .name = "capabilities",
+ .attrs = ufs_sysfs_capabilities_attrs,
+};
+
+static ssize_t version_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "0x%x\n", hba->ufs_version);
+}
+
+static ssize_t product_id_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int ret;
+ u32 val;
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ ret = ufshcd_read_hci_reg(hba, &val, REG_CONTROLLER_PID);
+ if (ret)
+ return ret;
+
+ return sysfs_emit(buf, "0x%x\n", val);
+}
+
+static ssize_t man_id_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int ret;
+ u32 val;
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ ret = ufshcd_read_hci_reg(hba, &val, REG_CONTROLLER_MID);
+ if (ret)
+ return ret;
+
+ return sysfs_emit(buf, "0x%x\n", val);
+}
+
+static DEVICE_ATTR_RO(version);
+static DEVICE_ATTR_RO(product_id);
+static DEVICE_ATTR_RO(man_id);
+
+static struct attribute *ufs_sysfs_ufshci_cap_attrs[] = {
+ &dev_attr_version.attr,
+ &dev_attr_product_id.attr,
+ &dev_attr_man_id.attr,
+ NULL
+};
+
+static const struct attribute_group ufs_sysfs_ufshci_group = {
+ .name = "ufshci_capabilities",
+ .attrs = ufs_sysfs_ufshci_cap_attrs,
+};
+
+static ssize_t monitor_enable_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%d\n", hba->monitor.enabled);
+}
+
+static ssize_t monitor_enable_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+ unsigned long value, flags;
+
+ if (kstrtoul(buf, 0, &value))
+ return -EINVAL;
+
+ value = !!value;
+ spin_lock_irqsave(hba->host->host_lock, flags);
+ if (value == hba->monitor.enabled)
+ goto out_unlock;
+
+ if (!value) {
+ memset(&hba->monitor, 0, sizeof(hba->monitor));
+ } else {
+ hba->monitor.enabled = true;
+ hba->monitor.enabled_ts = ktime_get();
+ }
+
+out_unlock:
+ spin_unlock_irqrestore(hba->host->host_lock, flags);
+ return count;
+}
+
+static ssize_t monitor_chunk_size_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%lu\n", hba->monitor.chunk_size);
+}
+
+static ssize_t monitor_chunk_size_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+ unsigned long value, flags;
+
+ if (kstrtoul(buf, 0, &value))
+ return -EINVAL;
+
+ spin_lock_irqsave(hba->host->host_lock, flags);
+ /* Only allow chunk size change when monitor is disabled */
+ if (!hba->monitor.enabled)
+ hba->monitor.chunk_size = value;
+ spin_unlock_irqrestore(hba->host->host_lock, flags);
+ return count;
+}
+
+static ssize_t read_total_sectors_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%lu\n", hba->monitor.nr_sec_rw[READ]);
+}
+
+static ssize_t read_total_busy_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%llu\n",
+ ktime_to_us(hba->monitor.total_busy[READ]));
+}
+
+static ssize_t read_nr_requests_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%lu\n", hba->monitor.nr_req[READ]);
+}
+
+static ssize_t read_req_latency_avg_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+ struct ufs_hba_monitor *m = &hba->monitor;
+
+ if (!m->nr_req[READ])
+ return sysfs_emit(buf, "0\n");
+
+ return sysfs_emit(buf, "%llu\n", div_u64(ktime_to_us(m->lat_sum[READ]),
+ m->nr_req[READ]));
+}
+
+static ssize_t read_req_latency_max_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%llu\n",
+ ktime_to_us(hba->monitor.lat_max[READ]));
+}
+
+static ssize_t read_req_latency_min_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%llu\n",
+ ktime_to_us(hba->monitor.lat_min[READ]));
+}
+
+static ssize_t read_req_latency_sum_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%llu\n",
+ ktime_to_us(hba->monitor.lat_sum[READ]));
+}
+
+static ssize_t write_total_sectors_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%lu\n", hba->monitor.nr_sec_rw[WRITE]);
+}
+
+static ssize_t write_total_busy_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%llu\n",
+ ktime_to_us(hba->monitor.total_busy[WRITE]));
+}
+
+static ssize_t write_nr_requests_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%lu\n", hba->monitor.nr_req[WRITE]);
+}
+
+static ssize_t write_req_latency_avg_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+ struct ufs_hba_monitor *m = &hba->monitor;
+
+ if (!m->nr_req[WRITE])
+ return sysfs_emit(buf, "0\n");
+
+ return sysfs_emit(buf, "%llu\n", div_u64(ktime_to_us(m->lat_sum[WRITE]),
+ m->nr_req[WRITE]));
+}
+
+static ssize_t write_req_latency_max_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%llu\n",
+ ktime_to_us(hba->monitor.lat_max[WRITE]));
+}
+
+static ssize_t write_req_latency_min_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%llu\n",
+ ktime_to_us(hba->monitor.lat_min[WRITE]));
+}
+
+static ssize_t write_req_latency_sum_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%llu\n",
+ ktime_to_us(hba->monitor.lat_sum[WRITE]));
+}
+
+static DEVICE_ATTR_RW(monitor_enable);
+static DEVICE_ATTR_RW(monitor_chunk_size);
+static DEVICE_ATTR_RO(read_total_sectors);
+static DEVICE_ATTR_RO(read_total_busy);
+static DEVICE_ATTR_RO(read_nr_requests);
+static DEVICE_ATTR_RO(read_req_latency_avg);
+static DEVICE_ATTR_RO(read_req_latency_max);
+static DEVICE_ATTR_RO(read_req_latency_min);
+static DEVICE_ATTR_RO(read_req_latency_sum);
+static DEVICE_ATTR_RO(write_total_sectors);
+static DEVICE_ATTR_RO(write_total_busy);
+static DEVICE_ATTR_RO(write_nr_requests);
+static DEVICE_ATTR_RO(write_req_latency_avg);
+static DEVICE_ATTR_RO(write_req_latency_max);
+static DEVICE_ATTR_RO(write_req_latency_min);
+static DEVICE_ATTR_RO(write_req_latency_sum);
+
+static struct attribute *ufs_sysfs_monitor_attrs[] = {
+ &dev_attr_monitor_enable.attr,
+ &dev_attr_monitor_chunk_size.attr,
+ &dev_attr_read_total_sectors.attr,
+ &dev_attr_read_total_busy.attr,
+ &dev_attr_read_nr_requests.attr,
+ &dev_attr_read_req_latency_avg.attr,
+ &dev_attr_read_req_latency_max.attr,
+ &dev_attr_read_req_latency_min.attr,
+ &dev_attr_read_req_latency_sum.attr,
+ &dev_attr_write_total_sectors.attr,
+ &dev_attr_write_total_busy.attr,
+ &dev_attr_write_nr_requests.attr,
+ &dev_attr_write_req_latency_avg.attr,
+ &dev_attr_write_req_latency_max.attr,
+ &dev_attr_write_req_latency_min.attr,
+ &dev_attr_write_req_latency_sum.attr,
+ NULL
+};
+
+static const struct attribute_group ufs_sysfs_monitor_group = {
+ .name = "monitor",
+ .attrs = ufs_sysfs_monitor_attrs,
+};
+
+static ssize_t lane_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%u\n", hba->pwr_info.lane_rx);
+}
+
+static ssize_t mode_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%s\n", ufs_pa_pwr_mode_to_string(hba->pwr_info.pwr_rx));
+}
+
+static ssize_t rate_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%s\n", ufs_hs_gear_rate_to_string(hba->pwr_info.hs_rate));
+}
+
+static ssize_t gear_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%s\n", hba->pwr_info.hs_rate ?
+ ufs_hs_gear_to_string(hba->pwr_info.gear_rx) :
+ ufs_pwm_gear_to_string(hba->pwr_info.gear_rx));
+}
+
+static ssize_t dev_pm_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%s\n", ufshcd_ufs_dev_pwr_mode_to_string(hba->curr_dev_pwr_mode));
+}
+
+static ssize_t link_state_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%s\n", ufshcd_uic_link_state_to_string(hba->uic_link_state));
+}
+
+static DEVICE_ATTR_RO(lane);
+static DEVICE_ATTR_RO(mode);
+static DEVICE_ATTR_RO(rate);
+static DEVICE_ATTR_RO(gear);
+static DEVICE_ATTR_RO(dev_pm);
+static DEVICE_ATTR_RO(link_state);
+
+static struct attribute *ufs_power_info_attrs[] = {
+ &dev_attr_lane.attr,
+ &dev_attr_mode.attr,
+ &dev_attr_rate.attr,
+ &dev_attr_gear.attr,
+ &dev_attr_dev_pm.attr,
+ &dev_attr_link_state.attr,
+ NULL
+};
+
+static const struct attribute_group ufs_sysfs_power_info_group = {
+ .name = "power_info",
+ .attrs = ufs_power_info_attrs,
+};
+
+static ssize_t ufs_sysfs_read_desc_param(struct ufs_hba *hba,
+ enum desc_idn desc_id,
+ u8 desc_index,
+ u8 param_offset,
+ u8 *sysfs_buf,
+ u8 param_size)
+{
+ u8 desc_buf[8] = {0};
+ int ret;
+
+ if (param_size > 8)
+ return -EINVAL;
+
+ down(&hba->host_sem);
+ if (!ufshcd_is_user_access_allowed(hba)) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ ufshcd_rpm_get_sync(hba);
+ ret = ufshcd_read_desc_param(hba, desc_id, desc_index,
+ param_offset, desc_buf, param_size);
+ ufshcd_rpm_put_sync(hba);
+ if (ret) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ switch (param_size) {
+ case 1:
+ ret = sysfs_emit(sysfs_buf, "0x%02X\n", *desc_buf);
+ break;
+ case 2:
+ ret = sysfs_emit(sysfs_buf, "0x%04X\n",
+ get_unaligned_be16(desc_buf));
+ break;
+ case 4:
+ ret = sysfs_emit(sysfs_buf, "0x%08X\n",
+ get_unaligned_be32(desc_buf));
+ break;
+ case 8:
+ ret = sysfs_emit(sysfs_buf, "0x%016llX\n",
+ get_unaligned_be64(desc_buf));
+ break;
+ }
+
+out:
+ up(&hba->host_sem);
+ return ret;
+}
+
+#define UFS_DESC_PARAM(_name, _puname, _duname, _size) \
+static ssize_t _name##_show(struct device *dev, \
+ struct device_attribute *attr, char *buf) \
+{ \
+ struct ufs_hba *hba = dev_get_drvdata(dev); \
+ return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \
+ 0, _duname##_DESC_PARAM##_puname, buf, _size); \
+} \
+static DEVICE_ATTR_RO(_name)
+
+#define UFS_DEVICE_DESC_PARAM(_name, _uname, _size) \
+ UFS_DESC_PARAM(_name, _uname, DEVICE, _size)
+
+UFS_DEVICE_DESC_PARAM(device_type, _DEVICE_TYPE, 1);
+UFS_DEVICE_DESC_PARAM(device_class, _DEVICE_CLASS, 1);
+UFS_DEVICE_DESC_PARAM(device_sub_class, _DEVICE_SUB_CLASS, 1);
+UFS_DEVICE_DESC_PARAM(protocol, _PRTCL, 1);
+UFS_DEVICE_DESC_PARAM(number_of_luns, _NUM_LU, 1);
+UFS_DEVICE_DESC_PARAM(number_of_wluns, _NUM_WLU, 1);
+UFS_DEVICE_DESC_PARAM(boot_enable, _BOOT_ENBL, 1);
+UFS_DEVICE_DESC_PARAM(descriptor_access_enable, _DESC_ACCSS_ENBL, 1);
+UFS_DEVICE_DESC_PARAM(initial_power_mode, _INIT_PWR_MODE, 1);
+UFS_DEVICE_DESC_PARAM(high_priority_lun, _HIGH_PR_LUN, 1);
+UFS_DEVICE_DESC_PARAM(secure_removal_type, _SEC_RMV_TYPE, 1);
+UFS_DEVICE_DESC_PARAM(support_security_lun, _SEC_LU, 1);
+UFS_DEVICE_DESC_PARAM(bkops_termination_latency, _BKOP_TERM_LT, 1);
+UFS_DEVICE_DESC_PARAM(initial_active_icc_level, _ACTVE_ICC_LVL, 1);
+UFS_DEVICE_DESC_PARAM(specification_version, _SPEC_VER, 2);
+UFS_DEVICE_DESC_PARAM(manufacturing_date, _MANF_DATE, 2);
+UFS_DEVICE_DESC_PARAM(manufacturer_id, _MANF_ID, 2);
+UFS_DEVICE_DESC_PARAM(rtt_capability, _RTT_CAP, 1);
+UFS_DEVICE_DESC_PARAM(rtc_update, _FRQ_RTC, 2);
+UFS_DEVICE_DESC_PARAM(ufs_features, _UFS_FEAT, 1);
+UFS_DEVICE_DESC_PARAM(ffu_timeout, _FFU_TMT, 1);
+UFS_DEVICE_DESC_PARAM(queue_depth, _Q_DPTH, 1);
+UFS_DEVICE_DESC_PARAM(device_version, _DEV_VER, 2);
+UFS_DEVICE_DESC_PARAM(number_of_secure_wpa, _NUM_SEC_WPA, 1);
+UFS_DEVICE_DESC_PARAM(psa_max_data_size, _PSA_MAX_DATA, 4);
+UFS_DEVICE_DESC_PARAM(psa_state_timeout, _PSA_TMT, 1);
+UFS_DEVICE_DESC_PARAM(ext_feature_sup, _EXT_UFS_FEATURE_SUP, 4);
+UFS_DEVICE_DESC_PARAM(wb_presv_us_en, _WB_PRESRV_USRSPC_EN, 1);
+UFS_DEVICE_DESC_PARAM(wb_type, _WB_TYPE, 1);
+UFS_DEVICE_DESC_PARAM(wb_shared_alloc_units, _WB_SHARED_ALLOC_UNITS, 4);
+
+static struct attribute *ufs_sysfs_device_descriptor[] = {
+ &dev_attr_device_type.attr,
+ &dev_attr_device_class.attr,
+ &dev_attr_device_sub_class.attr,
+ &dev_attr_protocol.attr,
+ &dev_attr_number_of_luns.attr,
+ &dev_attr_number_of_wluns.attr,
+ &dev_attr_boot_enable.attr,
+ &dev_attr_descriptor_access_enable.attr,
+ &dev_attr_initial_power_mode.attr,
+ &dev_attr_high_priority_lun.attr,
+ &dev_attr_secure_removal_type.attr,
+ &dev_attr_support_security_lun.attr,
+ &dev_attr_bkops_termination_latency.attr,
+ &dev_attr_initial_active_icc_level.attr,
+ &dev_attr_specification_version.attr,
+ &dev_attr_manufacturing_date.attr,
+ &dev_attr_manufacturer_id.attr,
+ &dev_attr_rtt_capability.attr,
+ &dev_attr_rtc_update.attr,
+ &dev_attr_ufs_features.attr,
+ &dev_attr_ffu_timeout.attr,
+ &dev_attr_queue_depth.attr,
+ &dev_attr_device_version.attr,
+ &dev_attr_number_of_secure_wpa.attr,
+ &dev_attr_psa_max_data_size.attr,
+ &dev_attr_psa_state_timeout.attr,
+ &dev_attr_ext_feature_sup.attr,
+ &dev_attr_wb_presv_us_en.attr,
+ &dev_attr_wb_type.attr,
+ &dev_attr_wb_shared_alloc_units.attr,
+ NULL,
+};
+
+static const struct attribute_group ufs_sysfs_device_descriptor_group = {
+ .name = "device_descriptor",
+ .attrs = ufs_sysfs_device_descriptor,
+};
+
+#define UFS_INTERCONNECT_DESC_PARAM(_name, _uname, _size) \
+ UFS_DESC_PARAM(_name, _uname, INTERCONNECT, _size)
+
+UFS_INTERCONNECT_DESC_PARAM(unipro_version, _UNIPRO_VER, 2);
+UFS_INTERCONNECT_DESC_PARAM(mphy_version, _MPHY_VER, 2);
+
+static struct attribute *ufs_sysfs_interconnect_descriptor[] = {
+ &dev_attr_unipro_version.attr,
+ &dev_attr_mphy_version.attr,
+ NULL,
+};
+
+static const struct attribute_group ufs_sysfs_interconnect_descriptor_group = {
+ .name = "interconnect_descriptor",
+ .attrs = ufs_sysfs_interconnect_descriptor,
+};
+
+#define UFS_GEOMETRY_DESC_PARAM(_name, _uname, _size) \
+ UFS_DESC_PARAM(_name, _uname, GEOMETRY, _size)
+
+UFS_GEOMETRY_DESC_PARAM(raw_device_capacity, _DEV_CAP, 8);
+UFS_GEOMETRY_DESC_PARAM(max_number_of_luns, _MAX_NUM_LUN, 1);
+UFS_GEOMETRY_DESC_PARAM(segment_size, _SEG_SIZE, 4);
+UFS_GEOMETRY_DESC_PARAM(allocation_unit_size, _ALLOC_UNIT_SIZE, 1);
+UFS_GEOMETRY_DESC_PARAM(min_addressable_block_size, _MIN_BLK_SIZE, 1);
+UFS_GEOMETRY_DESC_PARAM(optimal_read_block_size, _OPT_RD_BLK_SIZE, 1);
+UFS_GEOMETRY_DESC_PARAM(optimal_write_block_size, _OPT_WR_BLK_SIZE, 1);
+UFS_GEOMETRY_DESC_PARAM(max_in_buffer_size, _MAX_IN_BUF_SIZE, 1);
+UFS_GEOMETRY_DESC_PARAM(max_out_buffer_size, _MAX_OUT_BUF_SIZE, 1);
+UFS_GEOMETRY_DESC_PARAM(rpmb_rw_size, _RPMB_RW_SIZE, 1);
+UFS_GEOMETRY_DESC_PARAM(dyn_capacity_resource_policy, _DYN_CAP_RSRC_PLC, 1);
+UFS_GEOMETRY_DESC_PARAM(data_ordering, _DATA_ORDER, 1);
+UFS_GEOMETRY_DESC_PARAM(max_number_of_contexts, _MAX_NUM_CTX, 1);
+UFS_GEOMETRY_DESC_PARAM(sys_data_tag_unit_size, _TAG_UNIT_SIZE, 1);
+UFS_GEOMETRY_DESC_PARAM(sys_data_tag_resource_size, _TAG_RSRC_SIZE, 1);
+UFS_GEOMETRY_DESC_PARAM(secure_removal_types, _SEC_RM_TYPES, 1);
+UFS_GEOMETRY_DESC_PARAM(memory_types, _MEM_TYPES, 2);
+UFS_GEOMETRY_DESC_PARAM(sys_code_memory_max_alloc_units,
+ _SCM_MAX_NUM_UNITS, 4);
+UFS_GEOMETRY_DESC_PARAM(sys_code_memory_capacity_adjustment_factor,
+ _SCM_CAP_ADJ_FCTR, 2);
+UFS_GEOMETRY_DESC_PARAM(non_persist_memory_max_alloc_units,
+ _NPM_MAX_NUM_UNITS, 4);
+UFS_GEOMETRY_DESC_PARAM(non_persist_memory_capacity_adjustment_factor,
+ _NPM_CAP_ADJ_FCTR, 2);
+UFS_GEOMETRY_DESC_PARAM(enh1_memory_max_alloc_units,
+ _ENM1_MAX_NUM_UNITS, 4);
+UFS_GEOMETRY_DESC_PARAM(enh1_memory_capacity_adjustment_factor,
+ _ENM1_CAP_ADJ_FCTR, 2);
+UFS_GEOMETRY_DESC_PARAM(enh2_memory_max_alloc_units,
+ _ENM2_MAX_NUM_UNITS, 4);
+UFS_GEOMETRY_DESC_PARAM(enh2_memory_capacity_adjustment_factor,
+ _ENM2_CAP_ADJ_FCTR, 2);
+UFS_GEOMETRY_DESC_PARAM(enh3_memory_max_alloc_units,
+ _ENM3_MAX_NUM_UNITS, 4);
+UFS_GEOMETRY_DESC_PARAM(enh3_memory_capacity_adjustment_factor,
+ _ENM3_CAP_ADJ_FCTR, 2);
+UFS_GEOMETRY_DESC_PARAM(enh4_memory_max_alloc_units,
+ _ENM4_MAX_NUM_UNITS, 4);
+UFS_GEOMETRY_DESC_PARAM(enh4_memory_capacity_adjustment_factor,
+ _ENM4_CAP_ADJ_FCTR, 2);
+UFS_GEOMETRY_DESC_PARAM(wb_max_alloc_units, _WB_MAX_ALLOC_UNITS, 4);
+UFS_GEOMETRY_DESC_PARAM(wb_max_wb_luns, _WB_MAX_WB_LUNS, 1);
+UFS_GEOMETRY_DESC_PARAM(wb_buff_cap_adj, _WB_BUFF_CAP_ADJ, 1);
+UFS_GEOMETRY_DESC_PARAM(wb_sup_red_type, _WB_SUP_RED_TYPE, 1);
+UFS_GEOMETRY_DESC_PARAM(wb_sup_wb_type, _WB_SUP_WB_TYPE, 1);
+
+
+static struct attribute *ufs_sysfs_geometry_descriptor[] = {
+ &dev_attr_raw_device_capacity.attr,
+ &dev_attr_max_number_of_luns.attr,
+ &dev_attr_segment_size.attr,
+ &dev_attr_allocation_unit_size.attr,
+ &dev_attr_min_addressable_block_size.attr,
+ &dev_attr_optimal_read_block_size.attr,
+ &dev_attr_optimal_write_block_size.attr,
+ &dev_attr_max_in_buffer_size.attr,
+ &dev_attr_max_out_buffer_size.attr,
+ &dev_attr_rpmb_rw_size.attr,
+ &dev_attr_dyn_capacity_resource_policy.attr,
+ &dev_attr_data_ordering.attr,
+ &dev_attr_max_number_of_contexts.attr,
+ &dev_attr_sys_data_tag_unit_size.attr,
+ &dev_attr_sys_data_tag_resource_size.attr,
+ &dev_attr_secure_removal_types.attr,
+ &dev_attr_memory_types.attr,
+ &dev_attr_sys_code_memory_max_alloc_units.attr,
+ &dev_attr_sys_code_memory_capacity_adjustment_factor.attr,
+ &dev_attr_non_persist_memory_max_alloc_units.attr,
+ &dev_attr_non_persist_memory_capacity_adjustment_factor.attr,
+ &dev_attr_enh1_memory_max_alloc_units.attr,
+ &dev_attr_enh1_memory_capacity_adjustment_factor.attr,
+ &dev_attr_enh2_memory_max_alloc_units.attr,
+ &dev_attr_enh2_memory_capacity_adjustment_factor.attr,
+ &dev_attr_enh3_memory_max_alloc_units.attr,
+ &dev_attr_enh3_memory_capacity_adjustment_factor.attr,
+ &dev_attr_enh4_memory_max_alloc_units.attr,
+ &dev_attr_enh4_memory_capacity_adjustment_factor.attr,
+ &dev_attr_wb_max_alloc_units.attr,
+ &dev_attr_wb_max_wb_luns.attr,
+ &dev_attr_wb_buff_cap_adj.attr,
+ &dev_attr_wb_sup_red_type.attr,
+ &dev_attr_wb_sup_wb_type.attr,
+ NULL,
+};
+
+static const struct attribute_group ufs_sysfs_geometry_descriptor_group = {
+ .name = "geometry_descriptor",
+ .attrs = ufs_sysfs_geometry_descriptor,
+};
+
+#define UFS_HEALTH_DESC_PARAM(_name, _uname, _size) \
+ UFS_DESC_PARAM(_name, _uname, HEALTH, _size)
+
+UFS_HEALTH_DESC_PARAM(eol_info, _EOL_INFO, 1);
+UFS_HEALTH_DESC_PARAM(life_time_estimation_a, _LIFE_TIME_EST_A, 1);
+UFS_HEALTH_DESC_PARAM(life_time_estimation_b, _LIFE_TIME_EST_B, 1);
+
+static struct attribute *ufs_sysfs_health_descriptor[] = {
+ &dev_attr_eol_info.attr,
+ &dev_attr_life_time_estimation_a.attr,
+ &dev_attr_life_time_estimation_b.attr,
+ NULL,
+};
+
+static const struct attribute_group ufs_sysfs_health_descriptor_group = {
+ .name = "health_descriptor",
+ .attrs = ufs_sysfs_health_descriptor,
+};
+
+#define UFS_POWER_DESC_PARAM(_name, _uname, _index) \
+static ssize_t _name##_index##_show(struct device *dev, \
+ struct device_attribute *attr, char *buf) \
+{ \
+ struct ufs_hba *hba = dev_get_drvdata(dev); \
+ return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_POWER, 0, \
+ PWR_DESC##_uname##_0 + _index * 2, buf, 2); \
+} \
+static DEVICE_ATTR_RO(_name##_index)
+
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 0);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 1);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 2);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 3);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 4);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 5);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 6);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 7);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 8);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 9);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 10);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 11);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 12);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 13);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 14);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 15);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 0);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 1);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 2);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 3);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 4);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 5);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 6);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 7);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 8);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 9);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 10);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 11);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 12);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 13);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 14);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 15);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 0);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 1);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 2);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 3);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 4);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 5);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 6);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 7);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 8);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 9);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 10);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 11);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 12);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 13);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 14);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 15);
+
+static struct attribute *ufs_sysfs_power_descriptor[] = {
+ &dev_attr_active_icc_levels_vcc0.attr,
+ &dev_attr_active_icc_levels_vcc1.attr,
+ &dev_attr_active_icc_levels_vcc2.attr,
+ &dev_attr_active_icc_levels_vcc3.attr,
+ &dev_attr_active_icc_levels_vcc4.attr,
+ &dev_attr_active_icc_levels_vcc5.attr,
+ &dev_attr_active_icc_levels_vcc6.attr,
+ &dev_attr_active_icc_levels_vcc7.attr,
+ &dev_attr_active_icc_levels_vcc8.attr,
+ &dev_attr_active_icc_levels_vcc9.attr,
+ &dev_attr_active_icc_levels_vcc10.attr,
+ &dev_attr_active_icc_levels_vcc11.attr,
+ &dev_attr_active_icc_levels_vcc12.attr,
+ &dev_attr_active_icc_levels_vcc13.attr,
+ &dev_attr_active_icc_levels_vcc14.attr,
+ &dev_attr_active_icc_levels_vcc15.attr,
+ &dev_attr_active_icc_levels_vccq0.attr,
+ &dev_attr_active_icc_levels_vccq1.attr,
+ &dev_attr_active_icc_levels_vccq2.attr,
+ &dev_attr_active_icc_levels_vccq3.attr,
+ &dev_attr_active_icc_levels_vccq4.attr,
+ &dev_attr_active_icc_levels_vccq5.attr,
+ &dev_attr_active_icc_levels_vccq6.attr,
+ &dev_attr_active_icc_levels_vccq7.attr,
+ &dev_attr_active_icc_levels_vccq8.attr,
+ &dev_attr_active_icc_levels_vccq9.attr,
+ &dev_attr_active_icc_levels_vccq10.attr,
+ &dev_attr_active_icc_levels_vccq11.attr,
+ &dev_attr_active_icc_levels_vccq12.attr,
+ &dev_attr_active_icc_levels_vccq13.attr,
+ &dev_attr_active_icc_levels_vccq14.attr,
+ &dev_attr_active_icc_levels_vccq15.attr,
+ &dev_attr_active_icc_levels_vccq20.attr,
+ &dev_attr_active_icc_levels_vccq21.attr,
+ &dev_attr_active_icc_levels_vccq22.attr,
+ &dev_attr_active_icc_levels_vccq23.attr,
+ &dev_attr_active_icc_levels_vccq24.attr,
+ &dev_attr_active_icc_levels_vccq25.attr,
+ &dev_attr_active_icc_levels_vccq26.attr,
+ &dev_attr_active_icc_levels_vccq27.attr,
+ &dev_attr_active_icc_levels_vccq28.attr,
+ &dev_attr_active_icc_levels_vccq29.attr,
+ &dev_attr_active_icc_levels_vccq210.attr,
+ &dev_attr_active_icc_levels_vccq211.attr,
+ &dev_attr_active_icc_levels_vccq212.attr,
+ &dev_attr_active_icc_levels_vccq213.attr,
+ &dev_attr_active_icc_levels_vccq214.attr,
+ &dev_attr_active_icc_levels_vccq215.attr,
+ NULL,
+};
+
+static const struct attribute_group ufs_sysfs_power_descriptor_group = {
+ .name = "power_descriptor",
+ .attrs = ufs_sysfs_power_descriptor,
+};
+
+#define UFS_STRING_DESCRIPTOR(_name, _pname) \
+static ssize_t _name##_show(struct device *dev, \
+ struct device_attribute *attr, char *buf) \
+{ \
+ u8 index; \
+ struct ufs_hba *hba = dev_get_drvdata(dev); \
+ int ret; \
+ int desc_len = QUERY_DESC_MAX_SIZE; \
+ u8 *desc_buf; \
+ \
+ down(&hba->host_sem); \
+ if (!ufshcd_is_user_access_allowed(hba)) { \
+ up(&hba->host_sem); \
+ return -EBUSY; \
+ } \
+ desc_buf = kzalloc(QUERY_DESC_MAX_SIZE, GFP_ATOMIC); \
+ if (!desc_buf) { \
+ up(&hba->host_sem); \
+ return -ENOMEM; \
+ } \
+ ufshcd_rpm_get_sync(hba); \
+ ret = ufshcd_query_descriptor_retry(hba, \
+ UPIU_QUERY_OPCODE_READ_DESC, QUERY_DESC_IDN_DEVICE, \
+ 0, 0, desc_buf, &desc_len); \
+ if (ret) { \
+ ret = -EINVAL; \
+ goto out; \
+ } \
+ index = desc_buf[DEVICE_DESC_PARAM##_pname]; \
+ kfree(desc_buf); \
+ desc_buf = NULL; \
+ ret = ufshcd_read_string_desc(hba, index, &desc_buf, \
+ SD_ASCII_STD); \
+ if (ret < 0) \
+ goto out; \
+ ret = sysfs_emit(buf, "%s\n", desc_buf); \
+out: \
+ ufshcd_rpm_put_sync(hba); \
+ kfree(desc_buf); \
+ up(&hba->host_sem); \
+ return ret; \
+} \
+static DEVICE_ATTR_RO(_name)
+
+UFS_STRING_DESCRIPTOR(manufacturer_name, _MANF_NAME);
+UFS_STRING_DESCRIPTOR(product_name, _PRDCT_NAME);
+UFS_STRING_DESCRIPTOR(oem_id, _OEM_ID);
+UFS_STRING_DESCRIPTOR(serial_number, _SN);
+UFS_STRING_DESCRIPTOR(product_revision, _PRDCT_REV);
+
+static struct attribute *ufs_sysfs_string_descriptors[] = {
+ &dev_attr_manufacturer_name.attr,
+ &dev_attr_product_name.attr,
+ &dev_attr_oem_id.attr,
+ &dev_attr_serial_number.attr,
+ &dev_attr_product_revision.attr,
+ NULL,
+};
+
+static const struct attribute_group ufs_sysfs_string_descriptors_group = {
+ .name = "string_descriptors",
+ .attrs = ufs_sysfs_string_descriptors,
+};
+
+static inline bool ufshcd_is_wb_flags(enum flag_idn idn)
+{
+ return idn >= QUERY_FLAG_IDN_WB_EN &&
+ idn <= QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8;
+}
+
+#define UFS_FLAG(_name, _uname) \
+static ssize_t _name##_show(struct device *dev, \
+ struct device_attribute *attr, char *buf) \
+{ \
+ bool flag; \
+ u8 index = 0; \
+ int ret; \
+ struct ufs_hba *hba = dev_get_drvdata(dev); \
+ \
+ down(&hba->host_sem); \
+ if (!ufshcd_is_user_access_allowed(hba)) { \
+ up(&hba->host_sem); \
+ return -EBUSY; \
+ } \
+ if (ufshcd_is_wb_flags(QUERY_FLAG_IDN##_uname)) \
+ index = ufshcd_wb_get_query_index(hba); \
+ ufshcd_rpm_get_sync(hba); \
+ ret = ufshcd_query_flag(hba, UPIU_QUERY_OPCODE_READ_FLAG, \
+ QUERY_FLAG_IDN##_uname, index, &flag); \
+ ufshcd_rpm_put_sync(hba); \
+ if (ret) { \
+ ret = -EINVAL; \
+ goto out; \
+ } \
+ ret = sysfs_emit(buf, "%s\n", str_true_false(flag)); \
+out: \
+ up(&hba->host_sem); \
+ return ret; \
+} \
+static DEVICE_ATTR_RO(_name)
+
+UFS_FLAG(device_init, _FDEVICEINIT);
+UFS_FLAG(permanent_wpe, _PERMANENT_WPE);
+UFS_FLAG(power_on_wpe, _PWR_ON_WPE);
+UFS_FLAG(bkops_enable, _BKOPS_EN);
+UFS_FLAG(life_span_mode_enable, _LIFE_SPAN_MODE_ENABLE);
+UFS_FLAG(phy_resource_removal, _FPHYRESOURCEREMOVAL);
+UFS_FLAG(busy_rtc, _BUSY_RTC);
+UFS_FLAG(disable_fw_update, _PERMANENTLY_DISABLE_FW_UPDATE);
+UFS_FLAG(wb_enable, _WB_EN);
+UFS_FLAG(wb_flush_en, _WB_BUFF_FLUSH_EN);
+UFS_FLAG(wb_flush_during_h8, _WB_BUFF_FLUSH_DURING_HIBERN8);
+
+static struct attribute *ufs_sysfs_device_flags[] = {
+ &dev_attr_device_init.attr,
+ &dev_attr_permanent_wpe.attr,
+ &dev_attr_power_on_wpe.attr,
+ &dev_attr_bkops_enable.attr,
+ &dev_attr_life_span_mode_enable.attr,
+ &dev_attr_phy_resource_removal.attr,
+ &dev_attr_busy_rtc.attr,
+ &dev_attr_disable_fw_update.attr,
+ &dev_attr_wb_enable.attr,
+ &dev_attr_wb_flush_en.attr,
+ &dev_attr_wb_flush_during_h8.attr,
+ NULL,
+};
+
+static const struct attribute_group ufs_sysfs_flags_group = {
+ .name = "flags",
+ .attrs = ufs_sysfs_device_flags,
+};
+
+static ssize_t max_number_of_rtt_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+ u32 rtt;
+ 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, UPIU_QUERY_OPCODE_READ_ATTR,
+ QUERY_ATTR_IDN_MAX_NUM_OF_RTT, 0, 0, &rtt);
+ ufshcd_rpm_put_sync(hba);
+
+ if (ret)
+ goto out;
+
+ ret = sysfs_emit(buf, "0x%08X\n", rtt);
+
+out:
+ up(&hba->host_sem);
+ return ret;
+}
+
+static ssize_t max_number_of_rtt_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+ struct ufs_dev_info *dev_info = &hba->dev_info;
+ struct scsi_device *sdev;
+ unsigned int memflags;
+ unsigned int rtt;
+ int ret;
+
+ if (kstrtouint(buf, 0, &rtt))
+ return -EINVAL;
+
+ if (rtt > dev_info->rtt_cap) {
+ dev_err(dev, "rtt can be at most bDeviceRTTCap\n");
+ return -EINVAL;
+ }
+
+ down(&hba->host_sem);
+ if (!ufshcd_is_user_access_allowed(hba)) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ ufshcd_rpm_get_sync(hba);
+
+ memflags = memalloc_noio_save();
+ shost_for_each_device(sdev, hba->host)
+ blk_mq_freeze_queue_nomemsave(sdev->request_queue);
+
+ ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_WRITE_ATTR,
+ QUERY_ATTR_IDN_MAX_NUM_OF_RTT, 0, 0, &rtt);
+
+ shost_for_each_device(sdev, hba->host)
+ blk_mq_unfreeze_queue_nomemrestore(sdev->request_queue);
+ memalloc_noio_restore(memflags);
+
+ ufshcd_rpm_put_sync(hba);
+
+out:
+ up(&hba->host_sem);
+ return ret < 0 ? ret : count;
+}
+
+static DEVICE_ATTR_RW(max_number_of_rtt);
+
+static inline bool ufshcd_is_wb_attrs(enum attr_idn idn)
+{
+ return idn >= QUERY_ATTR_IDN_WB_FLUSH_STATUS &&
+ 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) \
+{ \
+ struct ufs_hba *hba = dev_get_drvdata(dev); \
+ u32 value; \
+ int ret; \
+ u8 index = 0; \
+ \
+ down(&hba->host_sem); \
+ if (!ufshcd_is_user_access_allowed(hba)) { \
+ up(&hba->host_sem); \
+ return -EBUSY; \
+ } \
+ if (ufshcd_is_wb_attrs(QUERY_ATTR_IDN##_uname)) \
+ index = ufshcd_wb_get_query_index(hba); \
+ ufshcd_rpm_get_sync(hba); \
+ ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR, \
+ QUERY_ATTR_IDN##_uname, index, 0, &value); \
+ ufshcd_rpm_put_sync(hba); \
+ if (ret) { \
+ ret = -EINVAL; \
+ goto out; \
+ } \
+ ret = sysfs_emit(buf, "0x%08X\n", value); \
+out: \
+ up(&hba->host_sem); \
+ return ret; \
+} \
+static DEVICE_ATTR_RO(_name)
+
+UFS_ATTRIBUTE(boot_lun_enabled, _BOOT_LU_EN);
+UFS_ATTRIBUTE(current_power_mode, _POWER_MODE);
+UFS_ATTRIBUTE(active_icc_level, _ACTIVE_ICC_LVL);
+UFS_ATTRIBUTE(ooo_data_enabled, _OOO_DATA_EN);
+UFS_ATTRIBUTE(bkops_status, _BKOPS_STATUS);
+UFS_ATTRIBUTE(purge_status, _PURGE_STATUS);
+UFS_ATTRIBUTE(max_data_in_size, _MAX_DATA_IN);
+UFS_ATTRIBUTE(max_data_out_size, _MAX_DATA_OUT);
+UFS_ATTRIBUTE(reference_clock_frequency, _REF_CLK_FREQ);
+UFS_ATTRIBUTE(configuration_descriptor_lock, _CONF_DESC_LOCK);
+UFS_ATTRIBUTE(exception_event_control, _EE_CONTROL);
+UFS_ATTRIBUTE(exception_event_status, _EE_STATUS);
+UFS_ATTRIBUTE(ffu_status, _FFU_STATUS);
+UFS_ATTRIBUTE(psa_state, _PSA_STATE);
+UFS_ATTRIBUTE(psa_data_size, _PSA_DATA_SIZE);
+UFS_ATTRIBUTE(wb_flush_status, _WB_FLUSH_STATUS);
+UFS_ATTRIBUTE(wb_avail_buf, _AVAIL_WB_BUFF_SIZE);
+UFS_ATTRIBUTE(wb_life_time_est, _WB_BUFF_LIFE_TIME_EST);
+UFS_ATTRIBUTE(wb_cur_buf, _CURR_WB_BUFF_SIZE);
+
+
+static struct attribute *ufs_sysfs_attributes[] = {
+ &dev_attr_boot_lun_enabled.attr,
+ &dev_attr_current_power_mode.attr,
+ &dev_attr_active_icc_level.attr,
+ &dev_attr_ooo_data_enabled.attr,
+ &dev_attr_bkops_status.attr,
+ &dev_attr_purge_status.attr,
+ &dev_attr_max_data_in_size.attr,
+ &dev_attr_max_data_out_size.attr,
+ &dev_attr_reference_clock_frequency.attr,
+ &dev_attr_configuration_descriptor_lock.attr,
+ &dev_attr_max_number_of_rtt.attr,
+ &dev_attr_exception_event_control.attr,
+ &dev_attr_exception_event_status.attr,
+ &dev_attr_ffu_status.attr,
+ &dev_attr_psa_state.attr,
+ &dev_attr_psa_data_size.attr,
+ &dev_attr_wb_flush_status.attr,
+ &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,
+};
+
+static const struct attribute_group ufs_sysfs_attributes_group = {
+ .name = "attributes",
+ .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,
+ &ufs_sysfs_ufshci_group,
+ &ufs_sysfs_monitor_group,
+ &ufs_sysfs_power_info_group,
+ &ufs_sysfs_device_descriptor_group,
+ &ufs_sysfs_interconnect_descriptor_group,
+ &ufs_sysfs_geometry_descriptor_group,
+ &ufs_sysfs_health_descriptor_group,
+ &ufs_sysfs_power_descriptor_group,
+ &ufs_sysfs_string_descriptors_group,
+ &ufs_sysfs_flags_group,
+ &ufs_sysfs_attributes_group,
+ &ufs_sysfs_hid_group,
+ NULL,
+};
+
+#define UFS_LUN_DESC_PARAM(_pname, _puname, _duname, _size) \
+static ssize_t _pname##_show(struct device *dev, \
+ struct device_attribute *attr, char *buf) \
+{ \
+ struct scsi_device *sdev = to_scsi_device(dev); \
+ struct ufs_hba *hba = shost_priv(sdev->host); \
+ u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun); \
+ if (!ufs_is_valid_unit_desc_lun(&hba->dev_info, lun)) \
+ return -EINVAL; \
+ return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \
+ lun, _duname##_DESC_PARAM##_puname, buf, _size); \
+} \
+static DEVICE_ATTR_RO(_pname)
+
+#define UFS_UNIT_DESC_PARAM(_name, _uname, _size) \
+ UFS_LUN_DESC_PARAM(_name, _uname, UNIT, _size)
+
+UFS_UNIT_DESC_PARAM(lu_enable, _LU_ENABLE, 1);
+UFS_UNIT_DESC_PARAM(boot_lun_id, _BOOT_LUN_ID, 1);
+UFS_UNIT_DESC_PARAM(lun_write_protect, _LU_WR_PROTECT, 1);
+UFS_UNIT_DESC_PARAM(lun_queue_depth, _LU_Q_DEPTH, 1);
+UFS_UNIT_DESC_PARAM(psa_sensitive, _PSA_SENSITIVE, 1);
+UFS_UNIT_DESC_PARAM(lun_memory_type, _MEM_TYPE, 1);
+UFS_UNIT_DESC_PARAM(data_reliability, _DATA_RELIABILITY, 1);
+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_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);
+
+static struct attribute *ufs_sysfs_unit_descriptor[] = {
+ &dev_attr_lu_enable.attr,
+ &dev_attr_boot_lun_id.attr,
+ &dev_attr_lun_write_protect.attr,
+ &dev_attr_lun_queue_depth.attr,
+ &dev_attr_psa_sensitive.attr,
+ &dev_attr_lun_memory_type.attr,
+ &dev_attr_data_reliability.attr,
+ &dev_attr_logical_block_size.attr,
+ &dev_attr_logical_block_count.attr,
+ &dev_attr_erase_block_size.attr,
+ &dev_attr_provisioning_type.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,
+ NULL,
+};
+
+static umode_t ufs_unit_descriptor_is_visible(struct kobject *kobj, struct attribute *attr, int n)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct scsi_device *sdev = to_scsi_device(dev);
+ u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun);
+ umode_t mode = attr->mode;
+
+ if (lun == UFS_UPIU_BOOT_WLUN || lun == UFS_UPIU_UFS_DEVICE_WLUN)
+ /* Boot and device WLUN have no unit descriptors */
+ mode = 0;
+ if (lun == UFS_UPIU_RPMB_WLUN && attr == &dev_attr_wb_buf_alloc_units.attr)
+ mode = 0;
+
+ return mode;
+}
+
+
+const struct attribute_group ufs_sysfs_unit_descriptor_group = {
+ .name = "unit_descriptor",
+ .attrs = ufs_sysfs_unit_descriptor,
+ .is_visible = ufs_unit_descriptor_is_visible,
+};
+
+static ssize_t dyn_cap_needed_attribute_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ u32 value;
+ struct scsi_device *sdev = to_scsi_device(dev);
+ struct ufs_hba *hba = shost_priv(sdev->host);
+ u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun);
+ int ret;
+
+ down(&hba->host_sem);
+ if (!ufshcd_is_user_access_allowed(hba)) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ ufshcd_rpm_get_sync(hba);
+ ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR,
+ QUERY_ATTR_IDN_DYN_CAP_NEEDED, lun, 0, &value);
+ ufshcd_rpm_put_sync(hba);
+ if (ret) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ret = sysfs_emit(buf, "0x%08X\n", value);
+
+out:
+ up(&hba->host_sem);
+ return ret;
+}
+static DEVICE_ATTR_RO(dyn_cap_needed_attribute);
+
+static struct attribute *ufs_sysfs_lun_attributes[] = {
+ &dev_attr_dyn_cap_needed_attribute.attr,
+ NULL,
+};
+
+const struct attribute_group ufs_sysfs_lun_attributes_group = {
+ .attrs = ufs_sysfs_lun_attributes,
+};
+
+void ufs_sysfs_add_nodes(struct device *dev)
+{
+ int ret;
+
+ ret = sysfs_create_groups(&dev->kobj, ufs_sysfs_groups);
+ if (ret)
+ dev_err(dev,
+ "%s: sysfs groups creation failed (err = %d)\n",
+ __func__, ret);
+}
+
+void ufs_sysfs_remove_nodes(struct device *dev)
+{
+ sysfs_remove_groups(&dev->kobj, ufs_sysfs_groups);
+}
generated by cgit (git 2.34.1) at 2025-12-25 10:40:44 +0000