DPDK logo

Elixir Cross Referencer

/*******************************************************************************

Copyright (c) 2001-2015, Intel Corporation
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

 1. Redistributions of source code must retain the above copyright notice,
    this list of conditions and the following disclaimer.

 2. Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in the
    documentation and/or other materials provided with the distribution.

 3. Neither the name of the Intel Corporation nor the names of its
    contributors may be used to endorse or promote products derived from
    this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.

***************************************************************************/

#include "ixgbe_vf.h"
#include "ixgbe_hv_vf.h"

/**
 * Hyper-V variant - just a stub.
 * @hw: unused
 * @mc_addr_list: unused
 * @mc_addr_count: unused
 * @next: unused
 * @clear: unused
 */
static s32 ixgbevf_hv_update_mc_addr_list_vf(struct ixgbe_hw *hw, u8 *mc_addr_list,
				 u32 mc_addr_count, ixgbe_mc_addr_itr next,
				 bool clear)
{
	UNREFERENCED_5PARAMETER(hw, mc_addr_list, mc_addr_count, next, clear);

	return IXGBE_ERR_FEATURE_NOT_SUPPORTED;
}

/**
 * Hyper-V variant - just a stub.
 * @hw: unused
 * @xcast_mode: unused
 */
static s32 ixgbevf_hv_update_xcast_mode(struct ixgbe_hw *hw, int xcast_mode)
{
	UNREFERENCED_2PARAMETER(hw, xcast_mode);

	return IXGBE_ERR_FEATURE_NOT_SUPPORTED;
}

/**
 * Hyper-V variant - just a stub.
 * @hw: unused
 * @vlan: unused
 * @vind: unused
 * @vlan_on: unused
 * @vlvf_bypass: unused
 */
static s32 ixgbevf_hv_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind,
				  bool vlan_on, bool vlvf_bypass)
{
	UNREFERENCED_5PARAMETER(hw, vlan, vind, vlan_on, vlvf_bypass);

	return IXGBE_ERR_FEATURE_NOT_SUPPORTED;
}

static s32 ixgbevf_hv_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr)
{
	UNREFERENCED_3PARAMETER(hw, index, addr);

	return IXGBE_ERR_FEATURE_NOT_SUPPORTED;
}

/**
 * Hyper-V variant - just a stub.
 */
static s32 ixgbevf_hv_reset_hw_vf(struct ixgbe_hw *hw)
{
	UNREFERENCED_PARAMETER(hw);

	return IXGBE_ERR_FEATURE_NOT_SUPPORTED;
}

/**
 * Hyper-V variant - just a stub.
 */
static s32 ixgbevf_hv_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vlan, u32 vind)
{
	UNREFERENCED_5PARAMETER(hw, index, addr, vlan, vind);

	return IXGBE_ERR_FEATURE_NOT_SUPPORTED;
}

/**
 * Hyper-V variant; there is no mailbox communication.
 * @hw: pointer to hardware structure
 * @speed: pointer to link speed
 * @link_up: true is link is up, false otherwise
 * @autoneg_wait_to_complete: unused
 *
 */
static s32 ixgbevf_hv_check_mac_link_vf(struct ixgbe_hw *hw,
					ixgbe_link_speed *speed,
					bool *link_up,
					bool autoneg_wait_to_complete)
{
	struct ixgbe_mbx_info *mbx = &hw->mbx;
	struct ixgbe_mac_info *mac = &hw->mac;
	u32 links_reg;
	UNREFERENCED_1PARAMETER(autoneg_wait_to_complete);

	/* If we were hit with a reset drop the link */
	if (!mbx->ops.check_for_rst(hw, 0) || !mbx->timeout)
		mac->get_link_status = true;

	if (!mac->get_link_status)
		goto out;

	/* if link status is down no point in checking to see if pf is up */
	links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
	if (!(links_reg & IXGBE_LINKS_UP))
		goto out;

	/* for SFP+ modules and DA cables on 82599 it can take up to 500usecs
	 * before the link status is correct
	 */
	if (mac->type == ixgbe_mac_82599_vf) {
		int i;

		for (i = 0; i < 5; i++) {
			DELAY(100);
			links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);

			if (!(links_reg & IXGBE_LINKS_UP))
				goto out;
		}
	}

	switch (links_reg & IXGBE_LINKS_SPEED_82599) {
	case IXGBE_LINKS_SPEED_10G_82599:
		*speed = IXGBE_LINK_SPEED_10GB_FULL;
		if (hw->mac.type >= ixgbe_mac_X550) {
			if (links_reg & IXGBE_LINKS_SPEED_NON_STD)
				*speed = IXGBE_LINK_SPEED_2_5GB_FULL;
		}
		break;
	case IXGBE_LINKS_SPEED_1G_82599:
		*speed = IXGBE_LINK_SPEED_1GB_FULL;
		break;
	case IXGBE_LINKS_SPEED_100_82599:
		*speed = IXGBE_LINK_SPEED_100_FULL;
		if (hw->mac.type == ixgbe_mac_X550) {
			if (links_reg & IXGBE_LINKS_SPEED_NON_STD)
				*speed = IXGBE_LINK_SPEED_5GB_FULL;
		}
		break;
	case IXGBE_LINKS_SPEED_10_X550EM_A:
		*speed = IXGBE_LINK_SPEED_UNKNOWN;
		/* Reserved for pre-x550 devices */
		if (hw->mac.type >= ixgbe_mac_X550)
			*speed = IXGBE_LINK_SPEED_10_FULL;
		break;
	default:
		*speed = IXGBE_LINK_SPEED_UNKNOWN;
	}

	/* if we passed all the tests above then the link is up and we no
	 * longer need to check for link
	 */
	mac->get_link_status = false;

out:
	*link_up = !mac->get_link_status;
	return IXGBE_SUCCESS;
}

/**
 * ixgbevf_hv_set_rlpml_vf - Set the maximum receive packet length
 * @hw: pointer to the HW structure
 * @max_size: value to assign to max frame size
 * Hyper-V variant.
 **/
static s32 ixgbevf_hv_set_rlpml_vf(struct ixgbe_hw *hw, u16 max_size)
{
	u32 reg;

	/* If we are on Hyper-V, we implement this functionality
	 * differently.
	 */
	reg =  IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(0));
	/* CRC == 4 */
	reg |= ((max_size + 4) | IXGBE_RXDCTL_RLPML_EN);
	IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(0), reg);

	return IXGBE_SUCCESS;
}

/**
 *  ixgbevf_hv_negotiate_api_version_vf - Negotiate supported API version
 *  @hw: pointer to the HW structure
 *  @api: integer containing requested API version
 *  Hyper-V version - only ixgbe_mbox_api_10 supported.
 **/
static int ixgbevf_hv_negotiate_api_version_vf(struct ixgbe_hw *hw, int api)
{
	UNREFERENCED_1PARAMETER(hw);

	/* Hyper-V only supports api version ixgbe_mbox_api_10 */
	if (api != ixgbe_mbox_api_10)
		return IXGBE_ERR_INVALID_ARGUMENT;

	return IXGBE_SUCCESS;
}

/**
 *  ixgbevf_hv_init_ops_vf - Initialize the pointers for vf
 *  @hw: pointer to hardware structure
 *
 *  This will assign function pointers, adapter-specific functions can
 *  override the assignment of generic function pointers by assigning
 *  their own adapter-specific function pointers.
 *  Does not touch the hardware.
 **/
s32 ixgbevf_hv_init_ops_vf(struct ixgbe_hw *hw)
{
	/* Set defaults for VF then override applicable Hyper-V
	 * specific functions
	 */
	ixgbe_init_ops_vf(hw);

	hw->mac.ops.reset_hw = ixgbevf_hv_reset_hw_vf;
	hw->mac.ops.check_link = ixgbevf_hv_check_mac_link_vf;
	hw->mac.ops.negotiate_api_version = ixgbevf_hv_negotiate_api_version_vf;
	hw->mac.ops.set_rar = ixgbevf_hv_set_rar_vf;
	hw->mac.ops.update_mc_addr_list = ixgbevf_hv_update_mc_addr_list_vf;
	hw->mac.ops.update_xcast_mode = ixgbevf_hv_update_xcast_mode;
	hw->mac.ops.set_uc_addr = ixgbevf_hv_set_uc_addr_vf;
	hw->mac.ops.set_vfta = ixgbevf_hv_set_vfta_vf;
	hw->mac.ops.set_rlpml = ixgbevf_hv_set_rlpml_vf;

	return IXGBE_SUCCESS;
}