[Intel-wired-lan] [next PATCH S75-V2 12/12] i40e: Add support for 'ethtool -m'
Alice Michael
alice.michael at intel.com
Thu Jun 29 08:36:43 UTC 2017
From: Filip Sadowski <filip.sadowski at intel.com>
This patch adds support for 'ethtool -m' command which displays
information about (Q)SFP+ module plugged into NIC's cage.
Signed-off-by: Filip Sadowski <filip.sadowski at intel.com>
---
drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 149 +++++++++++++++++++++++++
1 file changed, 149 insertions(+)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
index b273c24..06f17ff 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
@@ -4196,6 +4196,153 @@ static int i40e_set_priv_flags(struct net_device *dev, u32 flags)
return 0;
}
+#define I40E_I2C_EEPROM_DEV_ADDR 0xA0
+#define I40E_I2C_EEPROM_DEV_ADDR2 0xA2
+#define I40E_MODULE_TYPE_ADDR 0x00
+#define I40E_MODULE_REVISION_ADDR 0x01
+#define I40E_MODULE_SFF_8472_COMP 0x5E
+#define I40E_MODULE_SFF_8472_SWAP 0x5C
+#define I40E_MODULE_SFF_ADDR_MODE 0x04
+#define I40E_MODULE_TYPE_SFP 0x03
+#define I40E_MODULE_TYPE_QSFP_PLUS 0x0D
+#define I40E_MODULE_TYPE_QSFP28 0x11
+
+/**
+ * i40e_get_module_info - get (Q)SFP+ module type info
+ * @netdev: network interface device structure
+ * @modinfo: module EEPROM size and layout information structure
+ **/
+static int i40e_get_module_info(struct net_device *netdev,
+ struct ethtool_modinfo *modinfo)
+{
+ i40e_status status;
+ struct i40e_netdev_priv *np = netdev_priv(netdev);
+ struct i40e_vsi *vsi = np->vsi;
+ struct i40e_pf *pf = vsi->back;
+ struct i40e_hw *hw = &pf->hw;
+ u32 sff8472_comp = 0;
+ u32 sff8472_swap = 0;
+ u32 sff8636_rev = 0;
+ u32 type = 0;
+
+ /* Check if firmware supports reading module EEPROM. */
+ if (!(hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
+ hw->aq.api_min_ver >= 7)) {
+ netdev_err(vsi->netdev, "Module EEPROM memory read not supported. Please update the NVM image.\n");
+ return -EINVAL;
+ }
+
+ status = i40e_aq_get_phy_register(hw,
+ I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
+ I40E_I2C_EEPROM_DEV_ADDR, I40E_MODULE_TYPE_ADDR,
+ &type, NULL);
+ if (status)
+ return -EIO;
+
+ switch (type) {
+ case I40E_MODULE_TYPE_SFP:
+ status = i40e_aq_get_phy_register(hw,
+ I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
+ I40E_I2C_EEPROM_DEV_ADDR,
+ I40E_MODULE_SFF_8472_COMP,
+ &sff8472_comp, NULL);
+ if (status)
+ return -EIO;
+
+ status = i40e_aq_get_phy_register(hw,
+ I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
+ I40E_I2C_EEPROM_DEV_ADDR,
+ I40E_MODULE_SFF_8472_SWAP,
+ &sff8472_swap, NULL);
+ if (status)
+ return -EIO;
+
+ /* Check if the module requires address swap to access
+ * the other EEPROM memory page.
+ */
+ if (sff8472_swap & I40E_MODULE_SFF_ADDR_MODE) {
+ netdev_warn(vsi->netdev, "Module address swap to access page 0xA2 is not supported.\n");
+ modinfo->type = ETH_MODULE_SFF_8079;
+ modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
+ } else if (sff8472_comp == 0x00) {
+ /* Module is not SFF-8472 compliant */
+ modinfo->type = ETH_MODULE_SFF_8079;
+ modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
+ } else {
+ modinfo->type = ETH_MODULE_SFF_8472;
+ modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
+ }
+ break;
+ case I40E_MODULE_TYPE_QSFP_PLUS:
+ status = i40e_aq_get_phy_register(hw,
+ I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
+ I40E_I2C_EEPROM_DEV_ADDR,
+ I40E_MODULE_REVISION_ADDR,
+ &sff8636_rev, NULL);
+ if (status)
+ return -EIO;
+ /* Determine revision compliance byte */
+ if (sff8636_rev > 0x02) {
+ /* Module is SFF-8636 compliant */
+ modinfo->type = ETH_MODULE_SFF_8636;
+ modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
+ } else {
+ modinfo->type = ETH_MODULE_SFF_8436;
+ modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
+ }
+ break;
+ case I40E_MODULE_TYPE_QSFP28:
+ modinfo->type = ETH_MODULE_SFF_8636;
+ modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
+ break;
+ default:
+ netdev_err(vsi->netdev, "Module type unrecognized\n");
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/**
+ * i40e_get_module_eeprom - fills buffer with (Q)SFP+ module memory contents
+ * @netdev: network interface device structure
+ * @ee: EEPROM dump request structure
+ * @data: buffer to be filled with EEPROM contents
+ **/
+static int i40e_get_module_eeprom(struct net_device *netdev,
+ struct ethtool_eeprom *ee,
+ u8 *data)
+{
+ i40e_status status;
+ struct i40e_netdev_priv *np = netdev_priv(netdev);
+ struct i40e_vsi *vsi = np->vsi;
+ struct i40e_pf *pf = vsi->back;
+ struct i40e_hw *hw = &pf->hw;
+ u32 value = 0;
+ int i;
+
+ if (!ee || !ee->len || !data)
+ return -EINVAL;
+
+ for (i = 0; i < ee->len; i++) {
+ u32 offset = i + ee->offset;
+ u32 addr = I40E_I2C_EEPROM_DEV_ADDR;
+
+ /* Check if we need to access the other memory page */
+ if (offset >= ETH_MODULE_SFF_8079_LEN) {
+ offset -= ETH_MODULE_SFF_8079_LEN;
+ addr = I40E_I2C_EEPROM_DEV_ADDR2;
+ }
+
+ status = i40e_aq_get_phy_register(hw,
+ I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
+ addr, offset, &value, NULL);
+ if (status)
+ return -EIO;
+ data[i] = value;
+ }
+ return 0;
+}
+
static const struct ethtool_ops i40e_ethtool_ops = {
.get_drvinfo = i40e_get_drvinfo,
.get_regs_len = i40e_get_regs_len,
@@ -4228,6 +4375,8 @@ static const struct ethtool_ops i40e_ethtool_ops = {
.set_rxfh = i40e_set_rxfh,
.get_channels = i40e_get_channels,
.set_channels = i40e_set_channels,
+ .get_module_info = i40e_get_module_info,
+ .get_module_eeprom = i40e_get_module_eeprom,
.get_ts_info = i40e_get_ts_info,
.get_priv_flags = i40e_get_priv_flags,
.set_priv_flags = i40e_set_priv_flags,
--
2.9.3
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