/* Extract non-volatile configuration */
static int falcon_probe_nvconfig(struct efx_nic *efx)
{
	struct falcon_nvconfig *nvconfig;
	int board_rev;
	int rc;

	nvconfig = kmalloc(sizeof(*nvconfig), GFP_KERNEL);
	if (!nvconfig)
		return -ENOMEM;

	rc = falcon_read_nvram(efx, nvconfig);
	if (rc == -EINVAL) {
		EFX_ERR(efx, "NVRAM is invalid therefore using defaults\n");
		efx->phy_type = PHY_TYPE_NONE;
		efx->mdio.prtad = MDIO_PRTAD_NONE;
		board_rev = 0;
		rc = 0;
	} else if (rc) {
		goto fail1;
	} else {
		struct falcon_nvconfig_board_v2 *v2 = &nvconfig->board_v2;
		struct falcon_nvconfig_board_v3 *v3 = &nvconfig->board_v3;

		efx->phy_type = v2->port0_phy_type;
		efx->mdio.prtad = v2->port0_phy_addr;
		board_rev = le16_to_cpu(v2->board_revision);

		if (le16_to_cpu(nvconfig->board_struct_ver) >= 3) {
			rc = falcon_spi_device_init(
				efx, &efx->spi_flash, FFE_AB_SPI_DEVICE_FLASH,
				le32_to_cpu(v3->spi_device_type
					    [FFE_AB_SPI_DEVICE_FLASH]));
			if (rc)
				goto fail2;
			rc = falcon_spi_device_init(
				efx, &efx->spi_eeprom, FFE_AB_SPI_DEVICE_EEPROM,
				le32_to_cpu(v3->spi_device_type
					    [FFE_AB_SPI_DEVICE_EEPROM]));
			if (rc)
				goto fail2;
		}
	}

	/* Read the MAC addresses */
	memcpy(efx->mac_address, nvconfig->mac_address[0], ETH_ALEN);

	EFX_LOG(efx, "PHY is %d phy_id %d\n", efx->phy_type, efx->mdio.prtad);

	falcon_probe_board(efx, board_rev);

	kfree(nvconfig);
	return 0;

 fail2:
	falcon_remove_spi_devices(efx);
 fail1:
	kfree(nvconfig);
	return rc;
}
static int falcon_probe_nvconfig(struct efx_nic *efx)
{
	struct falcon_nic_data *nic_data = efx->nic_data;
	struct falcon_nvconfig *nvconfig;
	int rc;

	nvconfig = kmalloc(sizeof(*nvconfig), GFP_KERNEL);
	if (!nvconfig)
		return -ENOMEM;

	rc = falcon_read_nvram(efx, nvconfig);
	if (rc)
		goto out;

	efx->phy_type = nvconfig->board_v2.port0_phy_type;
	efx->mdio.prtad = nvconfig->board_v2.port0_phy_addr;

	if (le16_to_cpu(nvconfig->board_struct_ver) >= 3) {
		falcon_spi_device_init(
			efx, &nic_data->spi_flash, FFE_AB_SPI_DEVICE_FLASH,
			le32_to_cpu(nvconfig->board_v3
				    .spi_device_type[FFE_AB_SPI_DEVICE_FLASH]));
		falcon_spi_device_init(
			efx, &nic_data->spi_eeprom, FFE_AB_SPI_DEVICE_EEPROM,
			le32_to_cpu(nvconfig->board_v3
				    .spi_device_type[FFE_AB_SPI_DEVICE_EEPROM]));
	}

	
	memcpy(efx->net_dev->perm_addr, nvconfig->mac_address[0], ETH_ALEN);

	netif_dbg(efx, probe, efx->net_dev, "PHY is %d phy_id %d\n",
		  efx->phy_type, efx->mdio.prtad);

	rc = falcon_probe_board(efx,
				le16_to_cpu(nvconfig->board_v2.board_revision));
out:
	kfree(nvconfig);
	return rc;
}
static int falcon_test_nvram(struct efx_nic *efx)
{
	return falcon_read_nvram(efx, NULL);
}