[Accton][as7535-28xb] Add onlp_data_path_reset() to support chip reset

packages/platforms/accton/x86-64/as7535-28xb/modules/builds/x86-64-accton-as7535-28xb-sys.c

@@ -37,6 +37,8 @@
 #define IPMI_TIMEOUT (5 * HZ)
 #define IPMI_ERR_RETRY_TIMES 1
 #define IPMI_READ_MAX_LEN 128
+#define IPMI_RESET_CMD			0x65
+#define IPMI_RESET_CMD_LENGTH	6
 
 #define EEPROM_NAME "eeprom"
 #define EEPROM_SIZE 256	/*	256 byte eeprom */
@@ -49,6 +51,10 @@ static int as7535_28xb_sys_probe(struct platform_device *pdev);
 static int as7535_28xb_sys_remove(struct platform_device *pdev);
 static ssize_t show_version(struct device *dev,
 								struct device_attribute *da, char *buf);
+static ssize_t get_reset(struct device *dev, struct device_attribute *da,
+			char *buf);
+static ssize_t set_reset(struct device *dev, struct device_attribute *da,
+			const char *buf, size_t count);
 
 struct ipmi_data {
 	struct completion read_complete;
@@ -76,6 +82,8 @@ struct as7535_28xb_sys_data {
 	unsigned char ipmi_resp_eeprom[EEPROM_SIZE];
 	unsigned char ipmi_resp_cpld;
 	unsigned char ipmi_tx_data[2];
+	unsigned char ipmi_resp_rst[2];
+	unsigned char ipmi_tx_data_rst[IPMI_RESET_CMD_LENGTH];
 	struct bin_attribute eeprom; /* eeprom data */
 };
 
@@ -91,12 +99,26 @@ static struct platform_driver as7535_28xb_sys_driver = {
 };
 
 enum as7535_28xb_sys_sysfs_attrs {
+	RESET_MUX,
+	RESET_MAC,
 	FPGA_VER, /* FPGA version */
 };
 
+#define DECLARE_RESET_SENSOR_DEVICE_ATTR() \
+	static SENSOR_DEVICE_ATTR(reset_mac, S_IWUSR | S_IRUGO, \
+							get_reset, set_reset, RESET_MAC); \
+	static SENSOR_DEVICE_ATTR(reset_mux, S_IWUSR | S_IRUGO, \
+							get_reset, set_reset, RESET_MUX)
+#define DECLARE_RESET_ATTR() \
+	&sensor_dev_attr_reset_mac.dev_attr.attr, \
+	&sensor_dev_attr_reset_mux.dev_attr.attr
+
+DECLARE_RESET_SENSOR_DEVICE_ATTR();
 static SENSOR_DEVICE_ATTR(fpga_version, S_IRUGO, show_version, NULL, FPGA_VER);
 
 static struct attribute *as7535_28xb_sys_attributes[] = {
+	/* sysfs attributes */
+	DECLARE_RESET_ATTR(),
 	&sensor_dev_attr_fpga_version.dev_attr.attr,
 	NULL
 };
@@ -245,6 +267,71 @@ static void ipmi_msg_handler(struct ipmi_recv_msg *msg, void *user_msg_data)
 	complete(&ipmi->read_complete);
 }
 
+static ssize_t get_reset(struct device *dev, struct device_attribute *da,
+			char *buf)
+{
+	int status = 0;
+
+	mutex_lock(&data->update_lock);
+	status = ipmi_send_message(&data->ipmi, IPMI_RESET_CMD, NULL, 0,
+				   data->ipmi_resp_rst, sizeof(data->ipmi_resp_rst));
+	if (unlikely(status != 0))
+		goto exit;
+
+	if (unlikely(data->ipmi.rx_result != 0)) {
+		status = -EIO;
+		goto exit;
+	}
+
+	mutex_unlock(&data->update_lock);
+	return sprintf(buf, "0x%x 0x%x", data->ipmi_resp_rst[0], data->ipmi_resp_rst[1]);
+
+ exit:
+	mutex_unlock(&data->update_lock);
+	return status;
+}
+
+static ssize_t set_reset(struct device *dev, struct device_attribute *da,
+		       const char *buf, size_t count)
+{
+	u32 magic[2];
+	int status;
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+
+	if (sscanf(buf, "0x%x 0x%x", &magic[0], &magic[1]) != 2)
+		return -EINVAL;
+
+	if (magic[0] > 0xFF || magic[1] > 0xFF)
+		return -EINVAL;
+
+	mutex_lock(&data->update_lock);
+
+	/* Send IPMI write command */
+	data->ipmi_tx_data_rst[0] = 0;
+	data->ipmi_tx_data_rst[1] = 0;
+	data->ipmi_tx_data_rst[2] = (attr->index == RESET_MUX) ? 0 : (attr->index);
+	data->ipmi_tx_data_rst[3] = (attr->index == RESET_MUX) ? 2 : 1;
+	data->ipmi_tx_data_rst[4] = magic[0];
+	data->ipmi_tx_data_rst[5] = magic[1];
+
+	status = ipmi_send_message(&data->ipmi, IPMI_RESET_CMD,
+				   data->ipmi_tx_data_rst,
+				   sizeof(data->ipmi_tx_data_rst), NULL, 0);
+	if (unlikely(status != 0))
+		goto exit;
+
+	if (unlikely(data->ipmi.rx_result != 0)) {
+		status = -EIO;
+		goto exit;
+	}
+
+	status = count;
+
+ exit:
+	mutex_unlock(&data->update_lock);
+	return status;
+}
+
 static ssize_t sys_eeprom_read(loff_t off, char *buf, size_t count)
 {
 	int status = 0;

packages/platforms/accton/x86-64/as7535-28xb/onlp/builds/x86_64_accton_as7535_28xb/module/src/platform_lib.c

@@ -27,6 +27,8 @@
 #include <onlplib/file.h>
 #include "platform_lib.h"
 
+#define WARM_RESET_FORMAT "/sys/devices/platform/as7535_28xb_sys/reset_%s"
+
 enum onlp_fan_dir onlp_get_fan_dir(int fid)
 {
     int len = 0;
@@ -79,4 +81,39 @@ int get_pcb_id()
     pcb_id = (atoi(data) >> 2) & 0xff;
 
     return pcb_id;
-}
+}
+
+/**
+ * @brief warm reset for mac, mux
+ * @param unit_id The warm reset device unit id, should be 0
+ * @param reset_dev The warm reset device id, should be 1 ~ (WARM_RESET_MAX-1)
+ * @param ret return value.
+ */
+int onlp_data_path_reset(uint8_t unit_id, uint8_t reset_dev)
+{
+    int len = 0;
+    int ret = ONLP_STATUS_OK;
+    char *magic_num = NULL;
+    char *device_id[] = { NULL, "mac", NULL, "mux" };
+
+    if (unit_id != 0 || reset_dev >= WARM_RESET_MAX)
+        return ONLP_STATUS_E_PARAM;
+
+    if (reset_dev == 0 || reset_dev == WARM_RESET_PHY)
+        return ONLP_STATUS_E_UNSUPPORTED;
+
+    /* Reset device */
+    len = onlp_file_read_str(&magic_num, WARM_RESET_FORMAT, device_id[reset_dev]);
+    if (magic_num && len) {
+        ret = onlp_file_write_str(magic_num, WARM_RESET_FORMAT, device_id[reset_dev]);
+        if (ret < 0) {
+            AIM_LOG_ERROR("Reset device-%d:(%s) failed.", reset_dev, device_id[reset_dev]);
+        }
+    }
+    else {
+        ret = ONLP_STATUS_E_INTERNAL;
+    }
+
+    AIM_FREE_IF_PTR(magic_num);
+    return ret;
+}

packages/platforms/accton/x86-64/as7535-28xb/onlp/builds/x86_64_accton_as7535_28xb/module/src/platform_lib.h

@@ -65,6 +65,13 @@ enum onlp_thermal_id {
     THERMAL_COUNT
 };
 
+enum reset_dev_type {
+    WARM_RESET_MAC = 1,
+    WARM_RESET_PHY, /* Not supported */
+    WARM_RESET_MUX,
+    WARM_RESET_MAX
+};
+
 enum onlp_led_id {
     LED_LOC = 1,
     LED_DIAG,