net: hns3: adds support for reading module eeprom info
This patch adds support for reading the optical module eeprom info via "ethtool -m". Signed-off-by: Yonglong Liu <liuyonglong@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Acked-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
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c76c223016
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cb10228d23
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@ -374,6 +374,8 @@ struct hnae3_ae_dev {
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* Set the max tx rate of specified vf.
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* set_vf_mac
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* Configure the default MAC for specified VF
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* get_module_eeprom
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* Get the optical module eeprom info.
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*/
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struct hnae3_ae_ops {
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int (*init_ae_dev)(struct hnae3_ae_dev *ae_dev);
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@ -548,6 +550,8 @@ struct hnae3_ae_ops {
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int (*set_vf_rate)(struct hnae3_handle *handle, int vf,
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int min_tx_rate, int max_tx_rate, bool force);
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int (*set_vf_mac)(struct hnae3_handle *handle, int vf, u8 *p);
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int (*get_module_eeprom)(struct hnae3_handle *handle, u32 offset,
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u32 len, u8 *data);
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};
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struct hnae3_dcb_ops {
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@ -4,6 +4,7 @@
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#include <linux/etherdevice.h>
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#include <linux/string.h>
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#include <linux/phy.h>
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#include <linux/sfp.h>
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#include "hns3_enet.h"
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@ -12,6 +13,11 @@ struct hns3_stats {
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int stats_offset;
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};
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struct hns3_sfp_type {
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u8 type;
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u8 ext_type;
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};
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/* tqp related stats */
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#define HNS3_TQP_STAT(_string, _member) { \
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.stats_string = _string, \
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@ -1386,6 +1392,73 @@ static int hns3_set_fecparam(struct net_device *netdev,
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return ops->set_fec(handle, fec_mode);
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}
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static int hns3_get_module_info(struct net_device *netdev,
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struct ethtool_modinfo *modinfo)
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{
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#define HNS3_SFF_8636_V1_3 0x03
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struct hnae3_handle *handle = hns3_get_handle(netdev);
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const struct hnae3_ae_ops *ops = handle->ae_algo->ops;
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struct hns3_sfp_type sfp_type;
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int ret;
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if (handle->pdev->revision == 0x20 || !ops->get_module_eeprom)
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return -EOPNOTSUPP;
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memset(&sfp_type, 0, sizeof(sfp_type));
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ret = ops->get_module_eeprom(handle, 0, sizeof(sfp_type) / sizeof(u8),
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(u8 *)&sfp_type);
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if (ret)
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return ret;
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switch (sfp_type.type) {
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case SFF8024_ID_SFP:
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modinfo->type = ETH_MODULE_SFF_8472;
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modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
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break;
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case SFF8024_ID_QSFP_8438:
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modinfo->type = ETH_MODULE_SFF_8436;
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modinfo->eeprom_len = ETH_MODULE_SFF_8436_MAX_LEN;
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break;
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case SFF8024_ID_QSFP_8436_8636:
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if (sfp_type.ext_type < HNS3_SFF_8636_V1_3) {
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modinfo->type = ETH_MODULE_SFF_8436;
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modinfo->eeprom_len = ETH_MODULE_SFF_8436_MAX_LEN;
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} else {
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modinfo->type = ETH_MODULE_SFF_8636;
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modinfo->eeprom_len = ETH_MODULE_SFF_8636_MAX_LEN;
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}
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break;
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case SFF8024_ID_QSFP28_8636:
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modinfo->type = ETH_MODULE_SFF_8636;
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modinfo->eeprom_len = ETH_MODULE_SFF_8636_MAX_LEN;
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break;
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default:
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netdev_err(netdev, "Optical module unknown: %#x\n",
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sfp_type.type);
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return -EINVAL;
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}
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return 0;
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}
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static int hns3_get_module_eeprom(struct net_device *netdev,
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struct ethtool_eeprom *ee, u8 *data)
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{
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struct hnae3_handle *handle = hns3_get_handle(netdev);
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const struct hnae3_ae_ops *ops = handle->ae_algo->ops;
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if (handle->pdev->revision == 0x20 || !ops->get_module_eeprom)
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return -EOPNOTSUPP;
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if (!ee->len)
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return -EINVAL;
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memset(data, 0, ee->len);
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return ops->get_module_eeprom(handle, ee->offset, ee->len, data);
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}
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#define HNS3_ETHTOOL_COALESCE (ETHTOOL_COALESCE_USECS | \
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ETHTOOL_COALESCE_USE_ADAPTIVE | \
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ETHTOOL_COALESCE_RX_USECS_HIGH | \
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@ -1449,6 +1522,8 @@ static const struct ethtool_ops hns3_ethtool_ops = {
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.set_msglevel = hns3_set_msglevel,
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.get_fecparam = hns3_get_fecparam,
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.set_fecparam = hns3_set_fecparam,
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.get_module_info = hns3_get_module_info,
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.get_module_eeprom = hns3_get_module_eeprom,
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};
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void hns3_ethtool_set_ops(struct net_device *netdev)
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@ -270,6 +270,8 @@ enum hclge_opcode_type {
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HCLGE_OPC_M7_COMPAT_CFG = 0x701A,
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/* SFP command */
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HCLGE_OPC_GET_SFP_EEPROM = 0x7100,
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HCLGE_OPC_GET_SFP_EXIST = 0x7101,
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HCLGE_OPC_GET_SFP_INFO = 0x7104,
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/* Error INT commands */
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@ -1054,6 +1056,19 @@ struct hclge_firmware_compat_cmd {
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u8 rsv[20];
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};
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#define HCLGE_SFP_INFO_CMD_NUM 6
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#define HCLGE_SFP_INFO_BD0_LEN 20
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#define HCLGE_SFP_INFO_BDX_LEN 24
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#define HCLGE_SFP_INFO_MAX_LEN \
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(HCLGE_SFP_INFO_BD0_LEN + \
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(HCLGE_SFP_INFO_CMD_NUM - 1) * HCLGE_SFP_INFO_BDX_LEN)
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struct hclge_sfp_info_bd0_cmd {
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__le16 offset;
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__le16 read_len;
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u8 data[HCLGE_SFP_INFO_BD0_LEN];
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};
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int hclge_cmd_init(struct hclge_dev *hdev);
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static inline void hclge_write_reg(void __iomem *base, u32 reg, u32 value)
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{
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@ -11119,6 +11119,107 @@ static void hclge_sync_promisc_mode(struct hclge_dev *hdev)
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}
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}
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static bool hclge_module_existed(struct hclge_dev *hdev)
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{
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struct hclge_desc desc;
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u32 existed;
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int ret;
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hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_GET_SFP_EXIST, true);
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ret = hclge_cmd_send(&hdev->hw, &desc, 1);
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if (ret) {
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dev_err(&hdev->pdev->dev,
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"failed to get SFP exist state, ret = %d\n", ret);
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return false;
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}
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existed = le32_to_cpu(desc.data[0]);
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return existed != 0;
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}
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/* need 6 bds(total 140 bytes) in one reading
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* return the number of bytes actually read, 0 means read failed.
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*/
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static u16 hclge_get_sfp_eeprom_info(struct hclge_dev *hdev, u32 offset,
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u32 len, u8 *data)
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{
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struct hclge_desc desc[HCLGE_SFP_INFO_CMD_NUM];
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struct hclge_sfp_info_bd0_cmd *sfp_info_bd0;
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u16 read_len;
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u16 copy_len;
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int ret;
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int i;
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/* setup all 6 bds to read module eeprom info. */
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for (i = 0; i < HCLGE_SFP_INFO_CMD_NUM; i++) {
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hclge_cmd_setup_basic_desc(&desc[i], HCLGE_OPC_GET_SFP_EEPROM,
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true);
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/* bd0~bd4 need next flag */
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if (i < HCLGE_SFP_INFO_CMD_NUM - 1)
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desc[i].flag |= cpu_to_le16(HCLGE_CMD_FLAG_NEXT);
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}
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/* setup bd0, this bd contains offset and read length. */
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sfp_info_bd0 = (struct hclge_sfp_info_bd0_cmd *)desc[0].data;
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sfp_info_bd0->offset = cpu_to_le16((u16)offset);
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read_len = min_t(u16, len, HCLGE_SFP_INFO_MAX_LEN);
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sfp_info_bd0->read_len = cpu_to_le16(read_len);
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ret = hclge_cmd_send(&hdev->hw, desc, i);
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if (ret) {
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dev_err(&hdev->pdev->dev,
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"failed to get SFP eeprom info, ret = %d\n", ret);
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return 0;
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}
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/* copy sfp info from bd0 to out buffer. */
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copy_len = min_t(u16, len, HCLGE_SFP_INFO_BD0_LEN);
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memcpy(data, sfp_info_bd0->data, copy_len);
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read_len = copy_len;
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/* copy sfp info from bd1~bd5 to out buffer if needed. */
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for (i = 1; i < HCLGE_SFP_INFO_CMD_NUM; i++) {
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if (read_len >= len)
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return read_len;
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copy_len = min_t(u16, len - read_len, HCLGE_SFP_INFO_BDX_LEN);
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memcpy(data + read_len, desc[i].data, copy_len);
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read_len += copy_len;
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}
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return read_len;
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}
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static int hclge_get_module_eeprom(struct hnae3_handle *handle, u32 offset,
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u32 len, u8 *data)
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{
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struct hclge_vport *vport = hclge_get_vport(handle);
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struct hclge_dev *hdev = vport->back;
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u32 read_len = 0;
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u16 data_len;
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if (hdev->hw.mac.media_type != HNAE3_MEDIA_TYPE_FIBER)
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return -EOPNOTSUPP;
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if (!hclge_module_existed(hdev))
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return -ENXIO;
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while (read_len < len) {
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data_len = hclge_get_sfp_eeprom_info(hdev,
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offset + read_len,
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len - read_len,
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data + read_len);
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if (!data_len)
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return -EIO;
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read_len += data_len;
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}
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return 0;
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}
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static const struct hnae3_ae_ops hclge_ops = {
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.init_ae_dev = hclge_init_ae_dev,
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.uninit_ae_dev = hclge_uninit_ae_dev,
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@ -11211,6 +11312,7 @@ static const struct hnae3_ae_ops hclge_ops = {
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.set_vf_trust = hclge_set_vf_trust,
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.set_vf_rate = hclge_set_vf_rate,
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.set_vf_mac = hclge_set_vf_mac,
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.get_module_eeprom = hclge_get_module_eeprom,
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};
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static struct hnae3_ae_algo ae_algo = {
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