be2net: implements ethtool function to read eeprom data.

The patch implements a firmware command to fetch the eeprom data.

Signed-off-by: Sarveshwar Bandi <sarveshwarb@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 45 insertions, 0 deletions

diff --git a/drivers/net/benet/be_ethtool.c b/drivers/net/benet/be_ethtool.c
index 298b92cbd689..c5afc0286d4d 100644
--- a/drivers/net/benet/be_ethtool.c
+++ b/drivers/net/benet/be_ethtool.c
@@ -536,12 +536,57 @@ be_do_flash(struct net_device *netdev, struct ethtool_flash *efl)
         return be_load_fw(adapter, file_name);
 }
 
+static int
+be_get_eeprom_len(struct net_device *netdev)
+{
+        return BE_READ_SEEPROM_LEN;
+}
+
+static int
+be_read_eeprom(struct net_device *netdev, struct ethtool_eeprom *eeprom,
+                        uint8_t *data)
+{
+        struct be_adapter *adapter = netdev_priv(netdev);
+        struct be_dma_mem eeprom_cmd;
+        struct be_cmd_resp_seeprom_read *resp;
+        int status;
+
+        if (!eeprom->len)
+                return -EINVAL;
+
+        eeprom->magic = BE_VENDOR_ID | (adapter->pdev->device<<16);
+
+        memset(&eeprom_cmd, 0, sizeof(struct be_dma_mem));
+        eeprom_cmd.size = sizeof(struct be_cmd_req_seeprom_read);
+        eeprom_cmd.va = pci_alloc_consistent(adapter->pdev, eeprom_cmd.size,
+                                &eeprom_cmd.dma);
+
+        if (!eeprom_cmd.va) {
+                dev_err(&adapter->pdev->dev,
+                        "Memory allocation failure. Could not read eeprom\n");
+                return -ENOMEM;
+        }
+
+        status = be_cmd_get_seeprom_data(adapter, &eeprom_cmd);
+
+        if (!status) {
+                resp = (struct be_cmd_resp_seeprom_read *) eeprom_cmd.va;
+                memcpy(data, resp->seeprom_data, eeprom->len);
+        }
+        pci_free_consistent(adapter->pdev, eeprom_cmd.size, eeprom_cmd.va,
+                        eeprom_cmd.dma);
+
+        return status;
+}
+
 const struct ethtool_ops be_ethtool_ops = {
         .get_settings = be_get_settings,
         .get_drvinfo = be_get_drvinfo,
         .get_wol = be_get_wol,
         .set_wol = be_set_wol,
         .get_link = ethtool_op_get_link,
+        .get_eeprom_len = be_get_eeprom_len,
+        .get_eeprom = be_read_eeprom,
         .get_coalesce = be_get_coalesce,
         .set_coalesce = be_set_coalesce,
         .get_ringparam = be_get_ringparam,