[dpdk-stable] [PATCH v2 06/10] net/hns3: get device capability in primary process

["Wei Hu (Xavier)" <huwei013@chinasoftinc.com>]

From: "Wei Hu (Xavier)" <xavier.huwei@huawei.com>

[ upstream commit ab2e2e34416371817a21a41fc3def231675d4487 ]

This patch optimizes the code to get device capability in primary
process, and moves the code of getting PCI revision id in order to avoid
evaluating the private hw->revision of shared PMD-specific private data
in slave process.

Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Chengchang Tang <tangchengchang@huawei.com>
---
 drivers/net/hns3/hns3_ethdev.c    | 46 +++++++++++++++++++++++++------
 drivers/net/hns3/hns3_ethdev.h    |  4 +--
 drivers/net/hns3/hns3_ethdev_vf.c | 30 ++++++++++++++++++++
 3 files changed, 69 insertions(+), 11 deletions(-)

diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c
index 217aea4c0..ece02d440 100644
--- a/drivers/net/hns3/hns3_ethdev.c
+++ b/drivers/net/hns3/hns3_ethdev.c
@@ -2783,6 +2783,36 @@ hns3_parse_speed(int speed_cmd, uint32_t *speed)
 	return 0;
 }
 
+static int
+hns3_get_capability(struct hns3_hw *hw)
+{
+	struct rte_pci_device *pci_dev;
+	struct rte_eth_dev *eth_dev;
+	uint16_t device_id;
+	uint8_t revision;
+	int ret;
+
+	eth_dev = &rte_eth_devices[hw->data->port_id];
+	pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
+	device_id = pci_dev->id.device_id;
+
+	if (device_id == HNS3_DEV_ID_25GE_RDMA ||
+	    device_id == HNS3_DEV_ID_50GE_RDMA ||
+	    device_id == HNS3_DEV_ID_100G_RDMA_MACSEC)
+		hns3_set_bit(hw->capability, HNS3_DEV_SUPPORT_DCB_B, 1);
+
+	/* Get PCI revision id */
+	ret = rte_pci_read_config(pci_dev, &revision, HNS3_PCI_REVISION_ID_LEN,
+				  HNS3_PCI_REVISION_ID);
+	if (ret != HNS3_PCI_REVISION_ID_LEN) {
+		PMD_INIT_LOG(ERR, "failed to read pci revision id: %d", ret);
+		return -EIO;
+	}
+	hw->revision = revision;
+
+	return 0;
+}
+
 static int
 hns3_get_board_configuration(struct hns3_hw *hw)
 {
@@ -2857,6 +2887,13 @@ hns3_get_configuration(struct hns3_hw *hw)
 		return ret;
 	}
 
+	/* Get device capability */
+	ret = hns3_get_capability(hw);
+	if (ret) {
+		PMD_INIT_LOG(ERR, "failed to get device capability: %d.", ret);
+		return ret;
+	}
+
 	/* Get pf resource */
 	ret = hns3_query_pf_resource(hw);
 	if (ret) {
@@ -5383,11 +5420,8 @@ static const struct hns3_reset_ops hns3_reset_ops = {
 static int
 hns3_dev_init(struct rte_eth_dev *eth_dev)
 {
-	struct rte_device *dev = eth_dev->device;
-	struct rte_pci_device *pci_dev = RTE_DEV_TO_PCI(dev);
 	struct hns3_adapter *hns = eth_dev->data->dev_private;
 	struct hns3_hw *hw = &hns->hw;
-	uint16_t device_id = pci_dev->id.device_id;
 	int ret;
 
 	PMD_INIT_FUNC_TRACE();
@@ -5425,12 +5459,6 @@ hns3_dev_init(struct rte_eth_dev *eth_dev)
 	}
 
 	hw->adapter_state = HNS3_NIC_UNINITIALIZED;
-
-	if (device_id == HNS3_DEV_ID_25GE_RDMA ||
-	    device_id == HNS3_DEV_ID_50GE_RDMA ||
-	    device_id == HNS3_DEV_ID_100G_RDMA_MACSEC)
-		hns3_set_bit(hw->flag, HNS3_DEV_SUPPORT_DCB_B, 1);
-
 	hns->is_vf = false;
 	hw->data = eth_dev->data;
 
diff --git a/drivers/net/hns3/hns3_ethdev.h b/drivers/net/hns3/hns3_ethdev.h
index 35e64aa5a..6b2cebe22 100644
--- a/drivers/net/hns3/hns3_ethdev.h
+++ b/drivers/net/hns3/hns3_ethdev.h
@@ -389,7 +389,7 @@ struct hns3_hw {
 	uint16_t alloc_rss_size;    /* RX queue number per TC */
 	uint16_t tx_qnum_per_tc;    /* TX queue number per TC */
 
-	uint32_t flag;
+	uint32_t capability;
 
 	struct hns3_port_base_vlan_config port_base_vlan_cfg;
 	/*
@@ -520,7 +520,7 @@ struct hns3_adapter {
 #define HNS3_DEV_SUPPORT_DCB_B			0x0
 
 #define hns3_dev_dcb_supported(hw) \
-	hns3_get_bit((hw)->flag, HNS3_DEV_SUPPORT_DCB_B)
+	hns3_get_bit((hw)->capability, HNS3_DEV_SUPPORT_DCB_B)
 
 #define HNS3_DEV_PRIVATE_TO_HW(adapter) \
 	(&((struct hns3_adapter *)adapter)->hw)
diff --git a/drivers/net/hns3/hns3_ethdev_vf.c b/drivers/net/hns3/hns3_ethdev_vf.c
index b929fbcc8..847e4c61c 100644
--- a/drivers/net/hns3/hns3_ethdev_vf.c
+++ b/drivers/net/hns3/hns3_ethdev_vf.c
@@ -940,6 +940,29 @@ hns3vf_interrupt_handler(void *param)
 	hns3vf_enable_irq0(hw);
 }
 
+static int
+hns3vf_get_capability(struct hns3_hw *hw)
+{
+	struct rte_pci_device *pci_dev;
+	struct rte_eth_dev *eth_dev;
+	uint8_t revision;
+	int ret;
+
+	eth_dev = &rte_eth_devices[hw->data->port_id];
+	pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
+
+	/* Get PCI revision id */
+	ret = rte_pci_read_config(pci_dev, &revision, HNS3_PCI_REVISION_ID_LEN,
+				  HNS3_PCI_REVISION_ID);
+	if (ret != HNS3_PCI_REVISION_ID_LEN) {
+		PMD_INIT_LOG(ERR, "failed to read pci revision id: %d", ret);
+		return -EIO;
+	}
+	hw->revision = revision;
+
+	return 0;
+}
+
 static int
 hns3vf_check_tqp_info(struct hns3_hw *hw)
 {
@@ -1026,6 +1049,13 @@ hns3vf_get_configuration(struct hns3_hw *hw)
 	hw->mac.media_type = HNS3_MEDIA_TYPE_NONE;
 	hw->rss_dis_flag = false;
 
+	/* Get device capability */
+	ret = hns3vf_get_capability(hw);
+	if (ret) {
+		PMD_INIT_LOG(ERR, "failed to get device capability: %d.", ret);
+		return ret;
+	}
+
 	/* Get queue configuration from PF */
 	ret = hns3vf_get_queue_info(hw);
 	if (ret)
-- 
2.27.0