[PATCH net-next 3/3] net: hns3: add support for FEC encoding control
From: Peng Li
Date: Tue Apr 30 2019 - 23:06:58 EST
From: Jian Shen <shenjian15@xxxxxxxxxx>
This patch adds support for FEC encoding control, user can change
FEC mode by command ethtool --set-fec, and get FEC mode by command
ethtool --show-fec. The fec capability is changed follow the port
speed. If autoneg on, the user configure fec mode will be overwritten
by autoneg result.
Signed-off-by: Jian Shen <shenjian15@xxxxxxxxxx>
Signed-off-by: Peng Li <lipeng321@xxxxxxxxxx>
---
drivers/net/ethernet/hisilicon/hns3/hnae3.h | 10 ++
drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c | 77 +++++++++++++++
.../net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h | 16 ++++
.../ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 105 +++++++++++++++++++++
.../ethernet/hisilicon/hns3/hns3pf/hclge_main.h | 5 +-
5 files changed, 212 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.h b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
index 7ee40ec..ad21b0e 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hnae3.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
@@ -132,6 +132,13 @@ enum hnae3_module_type {
};
+enum hnae3_fec_mode {
+ HNAE3_FEC_AUTO = 0,
+ HNAE3_FEC_BASER,
+ HNAE3_FEC_RS,
+ HNAE3_FEC_USER_DEF,
+};
+
enum hnae3_reset_notify_type {
HNAE3_UP_CLIENT,
HNAE3_DOWN_CLIENT,
@@ -360,6 +367,9 @@ struct hnae3_ae_ops {
void (*get_media_type)(struct hnae3_handle *handle, u8 *media_type,
u8 *module_type);
int (*check_port_speed)(struct hnae3_handle *handle, u32 speed);
+ void (*get_fec)(struct hnae3_handle *handle, u8 *fec_ability,
+ u8 *fec_mode);
+ int (*set_fec)(struct hnae3_handle *handle, u32 fec_mode);
void (*adjust_link)(struct hnae3_handle *handle, int speed, int duplex);
int (*set_loopback)(struct hnae3_handle *handle,
enum hnae3_loop loop_mode, bool en);
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
index 23ded8a..1746943 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
@@ -1211,6 +1211,81 @@ static void hns3_set_msglevel(struct net_device *netdev, u32 msg_level)
h->msg_enable = msg_level;
}
+/* Translate local fec value into ethtool value. */
+static unsigned int loc_to_eth_fec(u8 loc_fec)
+{
+ u32 eth_fec = 0;
+
+ if (loc_fec & BIT(HNAE3_FEC_AUTO))
+ eth_fec |= ETHTOOL_FEC_AUTO;
+ if (loc_fec & BIT(HNAE3_FEC_RS))
+ eth_fec |= ETHTOOL_FEC_RS;
+ if (loc_fec & BIT(HNAE3_FEC_BASER))
+ eth_fec |= ETHTOOL_FEC_BASER;
+
+ /* if nothing is set, then FEC is off */
+ if (!eth_fec)
+ eth_fec = ETHTOOL_FEC_OFF;
+
+ return eth_fec;
+}
+
+/* Translate ethtool fec value into local value. */
+static unsigned int eth_to_loc_fec(unsigned int eth_fec)
+{
+ u32 loc_fec = 0;
+
+ if (eth_fec & ETHTOOL_FEC_OFF)
+ return loc_fec;
+
+ if (eth_fec & ETHTOOL_FEC_AUTO)
+ loc_fec |= BIT(HNAE3_FEC_AUTO);
+ if (eth_fec & ETHTOOL_FEC_RS)
+ loc_fec |= BIT(HNAE3_FEC_RS);
+ if (eth_fec & ETHTOOL_FEC_BASER)
+ loc_fec |= BIT(HNAE3_FEC_BASER);
+
+ return loc_fec;
+}
+
+static int hns3_get_fecparam(struct net_device *netdev,
+ struct ethtool_fecparam *fec)
+{
+ struct hnae3_handle *handle = hns3_get_handle(netdev);
+ const struct hnae3_ae_ops *ops = handle->ae_algo->ops;
+ u8 fec_ability;
+ u8 fec_mode;
+
+ if (handle->pdev->revision == 0x20)
+ return -EOPNOTSUPP;
+
+ if (!ops->get_fec)
+ return -EOPNOTSUPP;
+
+ ops->get_fec(handle, &fec_ability, &fec_mode);
+
+ fec->fec = loc_to_eth_fec(fec_ability);
+ fec->active_fec = loc_to_eth_fec(fec_mode);
+
+ return 0;
+}
+
+static int hns3_set_fecparam(struct net_device *netdev,
+ struct ethtool_fecparam *fec)
+{
+ struct hnae3_handle *handle = hns3_get_handle(netdev);
+ const struct hnae3_ae_ops *ops = handle->ae_algo->ops;
+ u32 fec_mode;
+
+ if (handle->pdev->revision == 0x20)
+ return -EOPNOTSUPP;
+
+ if (!ops->set_fec)
+ return -EOPNOTSUPP;
+ fec_mode = eth_to_loc_fec(fec->fec);
+ return ops->set_fec(handle, fec_mode);
+}
+
static const struct ethtool_ops hns3vf_ethtool_ops = {
.get_drvinfo = hns3_get_drvinfo,
.get_ringparam = hns3_get_ringparam,
@@ -1264,6 +1339,8 @@ static void hns3_set_msglevel(struct net_device *netdev, u32 msg_level)
.set_phys_id = hns3_set_phys_id,
.get_msglevel = hns3_get_msglevel,
.set_msglevel = hns3_set_msglevel,
+ .get_fecparam = hns3_get_fecparam,
+ .set_fecparam = hns3_set_fecparam,
};
void hns3_ethtool_set_ops(struct net_device *netdev)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
index 653ef6ad..d79a209 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
@@ -113,6 +113,7 @@ enum hclge_opcode_type {
HCLGE_OPC_MAC_TNL_INT_EN = 0x0311,
HCLGE_OPC_CLEAR_MAC_TNL_INT = 0x0312,
HCLGE_OPC_SERDES_LOOPBACK = 0x0315,
+ HCLGE_OPC_CONFIG_FEC_MODE = 0x031A,
/* PFC/Pause commands */
HCLGE_OPC_CFG_MAC_PAUSE_EN = 0x0701,
@@ -610,6 +611,21 @@ struct hclge_sfp_info_cmd {
u8 rsv[8];
};
+#define HCLGE_MAC_CFG_FEC_AUTO_EN_B 0
+#define HCLGE_MAC_CFG_FEC_MODE_S 1
+#define HCLGE_MAC_CFG_FEC_MODE_M GENMASK(3, 1)
+#define HCLGE_MAC_CFG_FEC_SET_DEF_B 0
+#define HCLGE_MAC_CFG_FEC_CLR_DEF_B 1
+
+#define HCLGE_MAC_FEC_OFF 0
+#define HCLGE_MAC_FEC_BASER 1
+#define HCLGE_MAC_FEC_RS 2
+struct hclge_config_fec_cmd {
+ u8 fec_mode;
+ u8 default_config;
+ u8 rsv[22];
+};
+
#define HCLGE_MAC_UPLINK_PORT 0x100
struct hclge_config_max_frm_size_cmd {
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index 335215d..a6e91a8 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -966,6 +966,37 @@ static void hclge_convert_setting_kr(struct hclge_mac *mac, u8 speed_ability)
mac->supported);
}
+static void hclge_convert_setting_fec(struct hclge_mac *mac)
+{
+ linkmode_clear_bit(ETHTOOL_LINK_MODE_FEC_BASER_BIT, mac->supported);
+ linkmode_clear_bit(ETHTOOL_LINK_MODE_FEC_RS_BIT, mac->supported);
+
+ switch (mac->speed) {
+ case HCLGE_MAC_SPEED_10G:
+ case HCLGE_MAC_SPEED_40G:
+ linkmode_set_bit(ETHTOOL_LINK_MODE_FEC_BASER_BIT,
+ mac->supported);
+ mac->fec_ability =
+ BIT(HNAE3_FEC_BASER) | BIT(HNAE3_FEC_AUTO);
+ break;
+ case HCLGE_MAC_SPEED_25G:
+ case HCLGE_MAC_SPEED_50G:
+ linkmode_set_bit(ETHTOOL_LINK_MODE_FEC_RS_BIT,
+ mac->supported);
+ mac->fec_ability =
+ BIT(HNAE3_FEC_BASER) | BIT(HNAE3_FEC_RS) |
+ BIT(HNAE3_FEC_AUTO);
+ break;
+ case HCLGE_MAC_SPEED_100G:
+ linkmode_set_bit(ETHTOOL_LINK_MODE_FEC_RS_BIT, mac->supported);
+ mac->fec_ability = BIT(HNAE3_FEC_RS) | BIT(HNAE3_FEC_AUTO);
+ break;
+ default:
+ mac->fec_ability = 0;
+ break;
+ }
+}
+
static void hclge_parse_fiber_link_mode(struct hclge_dev *hdev,
u8 speed_ability)
{
@@ -978,9 +1009,12 @@ static void hclge_parse_fiber_link_mode(struct hclge_dev *hdev,
hclge_convert_setting_sr(mac, speed_ability);
hclge_convert_setting_lr(mac, speed_ability);
hclge_convert_setting_cr(mac, speed_ability);
+ if (hdev->pdev->revision >= 0x21)
+ hclge_convert_setting_fec(mac);
linkmode_set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, mac->supported);
linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT, mac->supported);
+ linkmode_set_bit(ETHTOOL_LINK_MODE_FEC_NONE_BIT, mac->supported);
linkmode_copy(mac->advertising, mac->supported);
}
@@ -990,6 +1024,8 @@ static void hclge_parse_backplane_link_mode(struct hclge_dev *hdev,
struct hclge_mac *mac = &hdev->hw.mac;
hclge_convert_setting_kr(mac, speed_ability);
+ if (hdev->pdev->revision >= 0x21)
+ hclge_convert_setting_fec(mac);
linkmode_set_bit(ETHTOOL_LINK_MODE_Backplane_BIT, mac->supported);
linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT, mac->supported);
linkmode_copy(mac->advertising, mac->supported);
@@ -2281,6 +2317,64 @@ static int hclge_restart_autoneg(struct hnae3_handle *handle)
return hclge_notify_client(hdev, HNAE3_UP_CLIENT);
}
+static int hclge_set_fec_hw(struct hclge_dev *hdev, u32 fec_mode)
+{
+ struct hclge_config_fec_cmd *req;
+ struct hclge_desc desc;
+ int ret;
+
+ hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_CONFIG_FEC_MODE, false);
+
+ req = (struct hclge_config_fec_cmd *)desc.data;
+ if (fec_mode & BIT(HNAE3_FEC_AUTO))
+ hnae3_set_bit(req->fec_mode, HCLGE_MAC_CFG_FEC_AUTO_EN_B, 1);
+ if (fec_mode & BIT(HNAE3_FEC_RS))
+ hnae3_set_field(req->fec_mode, HCLGE_MAC_CFG_FEC_MODE_M,
+ HCLGE_MAC_CFG_FEC_MODE_S, HCLGE_MAC_FEC_RS);
+ if (fec_mode & BIT(HNAE3_FEC_BASER))
+ hnae3_set_field(req->fec_mode, HCLGE_MAC_CFG_FEC_MODE_M,
+ HCLGE_MAC_CFG_FEC_MODE_S, HCLGE_MAC_FEC_BASER);
+
+ ret = hclge_cmd_send(&hdev->hw, &desc, 1);
+ if (ret)
+ dev_err(&hdev->pdev->dev, "set fec mode failed %d.\n", ret);
+
+ return ret;
+}
+
+static int hclge_set_fec(struct hnae3_handle *handle, u32 fec_mode)
+{
+ struct hclge_vport *vport = hclge_get_vport(handle);
+ struct hclge_dev *hdev = vport->back;
+ struct hclge_mac *mac = &hdev->hw.mac;
+ int ret;
+
+ if (fec_mode && !(mac->fec_ability & fec_mode)) {
+ dev_err(&hdev->pdev->dev, "unsupported fec mode\n");
+ return -EINVAL;
+ }
+
+ ret = hclge_set_fec_hw(hdev, fec_mode);
+ if (ret)
+ return ret;
+
+ mac->user_fec_mode = fec_mode | BIT(HNAE3_FEC_USER_DEF);
+ return 0;
+}
+
+static void hclge_get_fec(struct hnae3_handle *handle, u8 *fec_ability,
+ u8 *fec_mode)
+{
+ struct hclge_vport *vport = hclge_get_vport(handle);
+ struct hclge_dev *hdev = vport->back;
+ struct hclge_mac *mac = &hdev->hw.mac;
+
+ if (fec_ability)
+ *fec_ability = mac->fec_ability;
+ if (fec_mode)
+ *fec_mode = mac->fec_mode;
+}
+
static int hclge_mac_init(struct hclge_dev *hdev)
{
struct hclge_mac *mac = &hdev->hw.mac;
@@ -2298,6 +2392,15 @@ static int hclge_mac_init(struct hclge_dev *hdev)
mac->link = 0;
+ if (mac->user_fec_mode & BIT(HNAE3_FEC_USER_DEF)) {
+ ret = hclge_set_fec_hw(hdev, mac->user_fec_mode);
+ if (ret) {
+ dev_err(&hdev->pdev->dev,
+ "Fec mode init fail, ret = %d\n", ret);
+ return ret;
+ }
+ }
+
ret = hclge_set_mac_mtu(hdev, hdev->mps);
if (ret) {
dev_err(&hdev->pdev->dev, "set mtu failed ret=%d\n", ret);
@@ -8753,6 +8856,8 @@ static int hclge_gro_en(struct hnae3_handle *handle, bool enable)
.cfg_mac_speed_dup_h = hclge_cfg_mac_speed_dup_h,
.get_media_type = hclge_get_media_type,
.check_port_speed = hclge_check_port_speed,
+ .get_fec = hclge_get_fec,
+ .set_fec = hclge_set_fec,
.get_rss_key_size = hclge_get_rss_key_size,
.get_rss_indir_size = hclge_get_rss_indir_size,
.get_rss = hclge_get_rss,
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
index 197e702..dd06b11 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
@@ -253,7 +253,10 @@ struct hclge_mac {
u32 speed;
u32 speed_ability; /* speed ability supported by current media */
u32 module_type; /* sub media type, e.g. kr/cr/sr/lr */
- int link; /* store the link status of mac & phy (if phy exit)*/
+ u32 fec_mode; /* active fec mode */
+ u32 user_fec_mode;
+ u32 fec_ability;
+ int link; /* store the link status of mac & phy (if phy exit) */
struct phy_device *phydev;
struct mii_bus *mdio_bus;
phy_interface_t phy_if;
--
1.9.1