[PATCH 3/5] net/ixgbe: add module EEPROM callbacks for ixgbe

[Zijie Pan <zijie.pan@6wind.com>]

Add new callbacks for eth_dev_ops of ixgbe to get the information
and data of plugin module eeprom.

Signed-off-by: Zijie Pan <zijie.pan@6wind.com>
---
 drivers/net/ixgbe/ixgbe_ethdev.c |   76 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 4483258..22a2270 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -328,6 +328,11 @@ static int ixgbe_get_eeprom(struct rte_eth_dev *dev,
 static int ixgbe_set_eeprom(struct rte_eth_dev *dev,
 				struct rte_dev_eeprom_info *eeprom);
 
+static int ixgbe_get_module_info(struct rte_eth_dev *dev,
+				 struct rte_dev_module_info *modinfo);
+static int ixgbe_get_module_eeprom(struct rte_eth_dev *dev,
+				   struct rte_dev_eeprom_info *info);
+
 static int ixgbevf_get_reg_length(struct rte_eth_dev *dev);
 static int ixgbevf_get_regs(struct rte_eth_dev *dev,
 				struct rte_dev_reg_info *regs);
@@ -565,6 +570,8 @@ static int ixgbe_dev_udp_tunnel_port_del(struct rte_eth_dev *dev,
 	.get_eeprom_length    = ixgbe_get_eeprom_length,
 	.get_eeprom           = ixgbe_get_eeprom,
 	.set_eeprom           = ixgbe_set_eeprom,
+	.get_module_info      = ixgbe_get_module_info,
+	.get_module_eeprom    = ixgbe_get_module_eeprom,
 	.get_dcb_info         = ixgbe_dev_get_dcb_info,
 	.timesync_adjust_time = ixgbe_timesync_adjust_time,
 	.timesync_read_time   = ixgbe_timesync_read_time,
@@ -7166,6 +7173,75 @@ static void ixgbevf_set_vfta_all(struct rte_eth_dev *dev, bool on)
 	return eeprom->ops.write_buffer(hw,  first, length, data);
 }
 
+static int
+ixgbe_get_module_info(struct rte_eth_dev *dev,
+		      struct rte_dev_module_info *modinfo)
+{
+	struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	uint32_t status;
+	uint8_t sff8472_rev, addr_mode;
+	bool page_swap = false;
+
+	/* Check whether we support SFF-8472 or not */
+	status = hw->phy.ops.read_i2c_eeprom(hw,
+					     IXGBE_SFF_SFF_8472_COMP,
+					     &sff8472_rev);
+	if (status != 0)
+		return -EIO;
+
+	/* addressing mode is not supported */
+	status = hw->phy.ops.read_i2c_eeprom(hw,
+					     IXGBE_SFF_SFF_8472_SWAP,
+					     &addr_mode);
+	if (status != 0)
+		return -EIO;
+
+	if (addr_mode & IXGBE_SFF_ADDRESSING_MODE) {
+		PMD_DRV_LOG(ERR, "Address change required to access page 0xA2, but not supported. Please report the module type to the driver maintainers.");
+		page_swap = true;
+	}
+
+	if (sff8472_rev == IXGBE_SFF_SFF_8472_UNSUP || page_swap) {
+		/* We have a SFP, but it does not support SFF-8472 */
+		modinfo->type = ETH_MODULE_SFF_8079;
+		modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
+	} else {
+		/* We have a SFP which supports a revision of SFF-8472. */
+		modinfo->type = ETH_MODULE_SFF_8472;
+		modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
+	}
+
+	return 0;
+}
+
+static int
+ixgbe_get_module_eeprom(struct rte_eth_dev *dev,
+			struct rte_dev_eeprom_info *info)
+{
+	struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	uint32_t status = IXGBE_ERR_PHY_ADDR_INVALID;
+	uint8_t databyte = 0xFF;
+	uint8_t *data = info->data;
+	uint32_t i = 0;
+
+	if (info->length == 0)
+		return -EINVAL;
+
+	for (i = info->offset; i < info->offset + info->length; i++) {
+		if (i < ETH_MODULE_SFF_8079_LEN)
+			status = hw->phy.ops.read_i2c_eeprom(hw, i, &databyte);
+		else
+			status = hw->phy.ops.read_i2c_sff8472(hw, i, &databyte);
+
+		if (status != 0)
+			return -EIO;
+
+		data[i - info->offset] = databyte;
+	}
+
+	return 0;
+}
+
 uint16_t
 ixgbe_reta_size_get(enum ixgbe_mac_type mac_type) {
 	switch (mac_type) {
-- 
1.7.10.4