[PATCH v2 net] net: hns: fix the bug about loopback

From: Kejian Yan
Date: Sat Mar 05 2016 - 01:01:03 EST

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It will always be passed if the soc is tested the loopback cases. This
patch will fix this bug.

Signed-off-by: Kejian Yan <yankejian@xxxxxxxxxx>
---
change log:
PATCH v2:
- This patch fixes the comments provided by Andy Shevchenko <Andy Shevchenko>

PATCH v1:
- first submit

Link: https://lkml.org/lkml/2016/3/3/266
---
drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c | 8 +++++
drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c | 37 ++++++++++++++++++++++
drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h | 1 +
drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h | 5 +++
drivers/net/ethernet/hisilicon/hns/hns_ethtool.c | 15 ++++++++-
5 files changed, 65 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
index a0070d0..d4f92ed 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
@@ -675,8 +675,12 @@ static int hns_ae_config_loopback(struct hnae_handle *handle,
{
int ret;
struct hnae_vf_cb *vf_cb = hns_ae_get_vf_cb(handle);
+ struct hns_mac_cb *mac_cb = hns_get_mac_cb(handle);

switch (loop) {
+ case MAC_INTERNALLOOP_PHY:
+ ret = 0;
+ break;
case MAC_INTERNALLOOP_SERDES:
ret = hns_mac_config_sds_loopback(vf_cb->mac_cb, en);
break;
@@ -686,6 +690,10 @@ static int hns_ae_config_loopback(struct hnae_handle *handle,
default:
ret = -EINVAL;
}
+
+ if (!ret)
+ hns_dsaf_set_inner_lb(mac_cb->dsaf_dev, mac_cb->mac_id, en);
+
return ret;
}

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
index 9439f04..38fc5be 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
@@ -230,6 +230,30 @@ static void hns_dsaf_mix_def_qid_cfg(struct dsaf_device *dsaf_dev)
}
}

+static void hns_dsaf_inner_qid_cfg(struct dsaf_device *dsaf_dev)
+{
+ u16 max_q_per_vf, max_vfn;
+ u32 q_id, q_num_per_port;
+ u32 mac_id;
+
+ if (AE_IS_VER1(dsaf_dev->dsaf_ver))
+ return;
+
+ hns_rcb_get_queue_mode(dsaf_dev->dsaf_mode,
+ HNS_DSAF_COMM_SERVICE_NW_IDX,
+ &max_vfn, &max_q_per_vf);
+ q_num_per_port = max_vfn * max_q_per_vf;
+
+ for (mac_id = 0, q_id = 0; mac_id < DSAF_SERVICE_NW_NUM; mac_id++) {
+ dsaf_set_dev_field(dsaf_dev,
+ DSAFV2_SERDES_LBK_0_REG + 4 * mac_id,
+ DSAFV2_SERDES_LBK_QID_M,
+ DSAFV2_SERDES_LBK_QID_S,
+ q_id);
+ q_id += q_num_per_port;
+ }
+}
+
/**
* hns_dsaf_sw_port_type_cfg - cfg sw type
* @dsaf_id: dsa fabric id
@@ -691,6 +715,16 @@ void hns_dsaf_set_promisc_mode(struct dsaf_device *dsaf_dev, u32 en)
dsaf_set_dev_bit(dsaf_dev, DSAF_CFG_0_REG, DSAF_CFG_MIX_MODE_S, !!en);
}

+void hns_dsaf_set_inner_lb(struct dsaf_device *dsaf_dev, u32 mac_id, u32 en)
+{
+ if (AE_IS_VER1(dsaf_dev->dsaf_ver) ||
+ dsaf_dev->mac_cb[mac_id].mac_type == HNAE_PORT_DEBUG)
+ return;
+
+ dsaf_set_dev_bit(dsaf_dev, DSAFV2_SERDES_LBK_0_REG + 4 * mac_id,
+ DSAFV2_SERDES_LBK_EN_B, !!en);
+}
+
/**
* hns_dsaf_tbl_stat_en - tbl
* @dsaf_id: dsa fabric id
@@ -1022,6 +1056,9 @@ static void hns_dsaf_comm_init(struct dsaf_device *dsaf_dev)
/* set promisc def queue id */
hns_dsaf_mix_def_qid_cfg(dsaf_dev);

+ /* set inner loopback queue id */
+ hns_dsaf_inner_qid_cfg(dsaf_dev);
+
/* in non switch mode, set all port to access mode */
hns_dsaf_sw_port_type_cfg(dsaf_dev, DSAF_SW_PORT_TYPE_NON_VLAN);

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
index 40205b9..5fea226 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
@@ -417,5 +417,6 @@ void hns_dsaf_get_strings(int stringset, u8 *data, int port);
void hns_dsaf_get_regs(struct dsaf_device *ddev, u32 port, void *data);
int hns_dsaf_get_regs_count(void);
void hns_dsaf_set_promisc_mode(struct dsaf_device *dsaf_dev, u32 en);
+void hns_dsaf_set_inner_lb(struct dsaf_device *dsaf_dev, u32 mac_id, u32 en);

#endif /* __HNS_DSAF_MAIN_H__ */
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h
index f0c4f9b..60d695d 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h
@@ -134,6 +134,7 @@
#define DSAF_XGE_INT_STS_0_REG 0x1C0
#define DSAF_PPE_INT_STS_0_REG 0x1E0
#define DSAF_ROCEE_INT_STS_0_REG 0x200
+#define DSAFV2_SERDES_LBK_0_REG 0x220
#define DSAF_PPE_QID_CFG_0_REG 0x300
#define DSAF_SW_PORT_TYPE_0_REG 0x320
#define DSAF_STP_PORT_TYPE_0_REG 0x340
@@ -857,6 +858,10 @@
#define PPEV2_CFG_RSS_TBL_4N3_S 24
#define PPEV2_CFG_RSS_TBL_4N3_M (((1UL << 5) - 1) << PPEV2_CFG_RSS_TBL_4N3_S)

+#define DSAFV2_SERDES_LBK_EN_B 8
+#define DSAFV2_SERDES_LBK_QID_S 0
+#define DSAFV2_SERDES_LBK_QID_M (((1UL << 8) - 1) << DSAFV2_SERDES_LBK_QID_S)
+
#define PPE_CNT_CLR_CE_B 0
#define PPE_CNT_CLR_SNAP_EN_B 1

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
index 3df2284..3c4a3bc 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
@@ -295,8 +295,10 @@ static int __lb_setup(struct net_device *ndev,

switch (loop) {
case MAC_INTERNALLOOP_PHY:
- if ((phy_dev) && (!phy_dev->is_c45))
+ if ((phy_dev) && (!phy_dev->is_c45)) {
ret = hns_nic_config_phy_loopback(phy_dev, 0x1);
+ ret |= h->dev->ops->set_loopback(h, loop, 0x1);
+ }
break;
case MAC_INTERNALLOOP_MAC:
if ((h->dev->ops->set_loopback) &&
@@ -376,6 +378,7 @@ static void __lb_other_process(struct hns_nic_ring_data *ring_data,
struct sk_buff *skb)
{
struct net_device *ndev;
+ struct hns_nic_priv *priv;
struct hnae_ring *ring;
struct netdev_queue *dev_queue;
struct sk_buff *new_skb;
@@ -385,8 +388,17 @@ static void __lb_other_process(struct hns_nic_ring_data *ring_data,
char buff[33]; /* 32B data and the last character '\0' */

if (!ring_data) { /* Just for doing create frame*/
+ ndev = skb->dev;
+ priv = netdev_priv(ndev);
+
frame_size = skb->len;
memset(skb->data, 0xFF, frame_size);
+ if ((!AE_IS_VER1(priv->enet_ver)) &&
+ (priv->ae_handle->port_type == HNAE_PORT_SERVICE)) {
+ memcpy(skb->data, ndev->dev_addr, 6);
+ skb->data[5] += 0x1f;
+ }
+
frame_size &= ~1ul;
memset(&skb->data[frame_size / 2], 0xAA, frame_size / 2 - 1);
memset(&skb->data[frame_size / 2 + 10], 0xBE,
@@ -486,6 +498,7 @@ static int __lb_run_test(struct net_device *ndev,

/* place data into test skb */
(void)skb_put(skb, size);
+ skb->dev = ndev;
__lb_other_process(NULL, skb);
skb->queue_mapping = NIC_LB_TEST_RING_ID;

--
1.9.1

Next message: David Rivshin (Allworx): "Re: [PATCH 3/4] leds: Add driver for the ISSI IS31FL32xx family of LED controllers"
Previous message: David Rivshin (Allworx): "Re: [PATCH 4/4] leds: Replace dedicated SN3218 driver with IS31FL32XX driver"
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