@@ -51,8 +51,10 @@
/* UIC command timeout, unit: ms */
-#define UIC_CMD_TIMEOUT 500
-
+enum {
+ UIC_CMD_TIMEOUT_DEFAULT = 500,
+ UIC_CMD_TIMEOUT_MAX = 2000,
+};
/* NOP OUT retries waiting for NOP IN response */
#define NOP_OUT_RETRIES 10
/* Timeout after 50 msecs if NOP OUT hangs without response */
@@ -113,6 +115,23 @@ static bool is_mcq_supported(struct ufs_hba *hba)
module_param(use_mcq_mode, bool, 0644);
MODULE_PARM_DESC(use_mcq_mode, "Control MCQ mode for controllers starting from UFSHCI 4.0. 1 - enable MCQ, 0 - disable MCQ. MCQ is enabled by default");
+static unsigned int uic_cmd_timeout = UIC_CMD_TIMEOUT_DEFAULT;
+
+static int uic_cmd_timeout_set(const char *val, const struct kernel_param *kp)
+{
+ return param_set_uint_minmax(val, kp, UIC_CMD_TIMEOUT_DEFAULT,
+ UIC_CMD_TIMEOUT_MAX);
+}
+
+static const struct kernel_param_ops uic_cmd_timeout_ops = {
+ .set = uic_cmd_timeout_set,
+ .get = param_get_uint,
+};
+
+module_param_cb(uic_cmd_timeout, &uic_cmd_timeout_ops, &uic_cmd_timeout, 0644);
+MODULE_PARM_DESC(uic_cmd_timeout,
+ "UFS UIC command timeout in milliseconds. Defaults to 500ms. Supported values range from 500ms to 2 seconds inclusively");
+
#define ufshcd_toggle_vreg(_dev, _vreg, _on) \
({ \
int _ret; \
@@ -2460,7 +2479,7 @@ static inline bool ufshcd_ready_for_uic_cmd(struct ufs_hba *hba)
{
u32 val;
int ret = read_poll_timeout(ufshcd_readl, val, val & UIC_COMMAND_READY,
- 500, UIC_CMD_TIMEOUT * 1000, false, hba,
+ 500, uic_cmd_timeout * 1000, false, hba,
REG_CONTROLLER_STATUS);
return ret == 0;
}
@@ -2520,7 +2539,7 @@ ufshcd_wait_for_uic_cmd(struct ufs_hba *hba, struct uic_command *uic_cmd)
lockdep_assert_held(&hba->uic_cmd_mutex);
if (wait_for_completion_timeout(&uic_cmd->done,
- msecs_to_jiffies(UIC_CMD_TIMEOUT))) {
+ msecs_to_jiffies(uic_cmd_timeout))) {
ret = uic_cmd->argument2 & MASK_UIC_COMMAND_RESULT;
} else {
ret = -ETIMEDOUT;
@@ -4298,7 +4317,7 @@ static int ufshcd_uic_pwr_ctrl(struct ufs_hba *hba, struct uic_command *cmd)
}
if (!wait_for_completion_timeout(hba->uic_async_done,
- msecs_to_jiffies(UIC_CMD_TIMEOUT))) {
+ msecs_to_jiffies(uic_cmd_timeout))) {
dev_err(hba->dev,
"pwr ctrl cmd 0x%x with mode 0x%x completion timeout\n",
cmd->command, cmd->argument3);