Imported Upstream version 16.04

Change-Id: I77eadcd8538a9122e4773cbe55b24033dc451757
Signed-off-by: C.J. Collier <cjcollier@linuxfoundation.org>

1 files changed, 314 insertions, 0 deletions

diff --git a/drivers/net/ixgbe/ixgbe_82599_bypass.c b/drivers/net/ixgbe/ixgbe_82599_bypass.c
new file mode 100644
index 00000000..21c42eac
--- /dev/null
+++ b/drivers/net/ixgbe/ixgbe_82599_bypass.c
@@ -0,0 +1,314 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of 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 "base/ixgbe_type.h"
+#include "base/ixgbe_82599.h"
+#include "base/ixgbe_api.h"
+#include "base/ixgbe_common.h"
+#include "base/ixgbe_phy.h"
+#include "ixgbe_bypass_defines.h"
+#include "ixgbe_bypass.h"
+
+/**
+ *  ixgbe_set_fiber_fixed_speed - Set module link speed for fixed fiber
+ *  @hw: pointer to hardware structure
+ *  @speed: link speed to set
+ *
+ *  We set the module speed differently for fixed fiber.  For other
+ *  multi-speed devices we don't have an error value so here if we
+ *  detect an error we just log it and exit.
+ */
+static void
+ixgbe_set_fiber_fixed_speed(struct ixgbe_hw *hw, ixgbe_link_speed speed)
+{
+	s32 status;
+	u8 rs, eeprom_data;
+
+	switch (speed) {
+	case IXGBE_LINK_SPEED_10GB_FULL:
+		/* one bit mask same as setting on */
+		rs = IXGBE_SFF_SOFT_RS_SELECT_10G;
+		break;
+	case IXGBE_LINK_SPEED_1GB_FULL:
+		rs = IXGBE_SFF_SOFT_RS_SELECT_1G;
+		break;
+	default:
+		PMD_DRV_LOG(ERR, "Invalid fixed module speed");
+		return;
+	}
+
+	/* Set RS0 */
+	status = hw->phy.ops.read_i2c_byte(hw, IXGBE_SFF_SFF_8472_OSCB,
+					   IXGBE_I2C_EEPROM_DEV_ADDR2,
+					   &eeprom_data);
+	if (status) {
+		PMD_DRV_LOG(ERR, "Failed to read Rx Rate Select RS0");
+		goto out;
+	}
+
+	eeprom_data = (eeprom_data & ~IXGBE_SFF_SOFT_RS_SELECT_MASK) & rs;
+
+	status = hw->phy.ops.write_i2c_byte(hw, IXGBE_SFF_SFF_8472_OSCB,
+					    IXGBE_I2C_EEPROM_DEV_ADDR2,
+					    eeprom_data);
+	if (status) {
+		PMD_DRV_LOG(ERR, "Failed to write Rx Rate Select RS0");
+		goto out;
+	}
+
+	/* Set RS1 */
+	status = hw->phy.ops.read_i2c_byte(hw, IXGBE_SFF_SFF_8472_ESCB,
+					   IXGBE_I2C_EEPROM_DEV_ADDR2,
+					   &eeprom_data);
+	if (status) {
+		PMD_DRV_LOG(ERR, "Failed to read Rx Rate Select RS1");
+		goto out;
+	}
+
+	eeprom_data = (eeprom_data & ~IXGBE_SFF_SOFT_RS_SELECT_MASK) & rs;
+
+	status = hw->phy.ops.write_i2c_byte(hw, IXGBE_SFF_SFF_8472_ESCB,
+					    IXGBE_I2C_EEPROM_DEV_ADDR2,
+					    eeprom_data);
+	if (status) {
+		PMD_DRV_LOG(ERR, "Failed to write Rx Rate Select RS1");
+		goto out;
+	}
+out:
+	return;
+}
+
+/**
+ *  ixgbe_setup_mac_link_multispeed_fixed_fiber - Set MAC link speed
+ *  @hw: pointer to hardware structure
+ *  @speed: new link speed
+ *  @autoneg_wait_to_complete: true when waiting for completion is needed
+ *
+ *  Set the link speed in the AUTOC register and restarts link.
+ **/
+static s32
+ixgbe_setup_mac_link_multispeed_fixed_fiber(struct ixgbe_hw *hw,
+				     ixgbe_link_speed speed,
+				     bool autoneg_wait_to_complete)
+{
+	s32 status = IXGBE_SUCCESS;
+	ixgbe_link_speed link_speed = IXGBE_LINK_SPEED_UNKNOWN;
+	ixgbe_link_speed highest_link_speed = IXGBE_LINK_SPEED_UNKNOWN;
+	u32 speedcnt = 0;
+	u32 esdp_reg = IXGBE_READ_REG(hw, IXGBE_ESDP);
+	u32 i = 0;
+	bool link_up = false;
+	bool negotiation;
+
+	PMD_INIT_FUNC_TRACE();
+
+	/* Mask off requested but non-supported speeds */
+	status = ixgbe_get_link_capabilities(hw, &link_speed, &negotiation);
+	if (status != IXGBE_SUCCESS)
+		return status;
+
+	speed &= link_speed;
+
+	/*
+	 * Try each speed one by one, highest priority first.  We do this in
+	 * software because 10gb fiber doesn't support speed autonegotiation.
+	 */
+	if (speed & IXGBE_LINK_SPEED_10GB_FULL) {
+		speedcnt++;
+		highest_link_speed = IXGBE_LINK_SPEED_10GB_FULL;
+
+		/* If we already have link at this speed, just jump out */
+		status = ixgbe_check_link(hw, &link_speed, &link_up, false);
+		if (status != IXGBE_SUCCESS)
+			return status;
+
+		if ((link_speed == IXGBE_LINK_SPEED_10GB_FULL) && link_up)
+			goto out;
+		/* Set the module link speed */
+		ixgbe_set_fiber_fixed_speed(hw, IXGBE_LINK_SPEED_10GB_FULL);
+
+		/* Set the module link speed */
+		esdp_reg |= (IXGBE_ESDP_SDP5_DIR | IXGBE_ESDP_SDP5);
+		IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp_reg);
+		IXGBE_WRITE_FLUSH(hw);
+
+		/* Allow module to change analog characteristics (1G->10G) */
+		msec_delay(40);
+
+		status = ixgbe_setup_mac_link_82599(hw,
+						    IXGBE_LINK_SPEED_10GB_FULL,
+						    autoneg_wait_to_complete);
+		if (status != IXGBE_SUCCESS)
+			return status;
+
+		/* Flap the tx laser if it has not already been done */
+		ixgbe_flap_tx_laser(hw);
+
+		/*
+		 * Wait for the controller to acquire link.  Per IEEE 802.3ap,
+		 * Section 73.10.2, we may have to wait up to 500ms if KR is
+		 * attempted.  82599 uses the same timing for 10g SFI.
+		 */
+		for (i = 0; i < 5; i++) {
+			/* Wait for the link partner to also set speed */
+			msec_delay(100);
+
+			/* If we have link, just jump out */
+			status = ixgbe_check_link(hw, &link_speed,
+						  &link_up, false);
+			if (status != IXGBE_SUCCESS)
+				return status;
+
+			if (link_up)
+				goto out;
+		}
+	}
+
+	if (speed & IXGBE_LINK_SPEED_1GB_FULL) {
+		speedcnt++;
+		if (highest_link_speed == IXGBE_LINK_SPEED_UNKNOWN)
+			highest_link_speed = IXGBE_LINK_SPEED_1GB_FULL;
+
+		/* If we already have link at this speed, just jump out */
+		status = ixgbe_check_link(hw, &link_speed, &link_up, false);
+		if (status != IXGBE_SUCCESS)
+			return status;
+
+		if ((link_speed == IXGBE_LINK_SPEED_1GB_FULL) && link_up)
+			goto out;
+
+		/* Set the module link speed */
+		ixgbe_set_fiber_fixed_speed(hw, IXGBE_LINK_SPEED_1GB_FULL);
+
+		/* Allow module to change analog characteristics (10G->1G) */
+		msec_delay(40);
+
+		status = ixgbe_setup_mac_link_82599(hw,
+						    IXGBE_LINK_SPEED_1GB_FULL,
+						    autoneg_wait_to_complete);
+		if (status != IXGBE_SUCCESS)
+			return status;
+
+		/* Flap the tx laser if it has not already been done */
+		ixgbe_flap_tx_laser(hw);
+
+		/* Wait for the link partner to also set speed */
+		msec_delay(100);
+
+		/* If we have link, just jump out */
+		status = ixgbe_check_link(hw, &link_speed, &link_up, false);
+		if (status != IXGBE_SUCCESS)
+			return status;
+
+		if (link_up)
+			goto out;
+	}
+
+	/*
+	 * We didn't get link.  Configure back to the highest speed we tried,
+	 * (if there was more than one).  We call ourselves back with just the
+	 * single highest speed that the user requested.
+	 */
+	if (speedcnt > 1)
+		status = ixgbe_setup_mac_link_multispeed_fixed_fiber(hw,
+			highest_link_speed, autoneg_wait_to_complete);
+
+out:
+	/* Set autoneg_advertised value based on input link speed */
+	hw->phy.autoneg_advertised = 0;
+
+	if (speed & IXGBE_LINK_SPEED_10GB_FULL)
+		hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_10GB_FULL;
+
+	if (speed & IXGBE_LINK_SPEED_1GB_FULL)
+		hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_1GB_FULL;
+
+	return status;
+}
+
+static enum ixgbe_media_type
+ixgbe_bypass_get_media_type(struct ixgbe_hw *hw)
+{
+	enum ixgbe_media_type media_type;
+
+	PMD_INIT_FUNC_TRACE();
+
+	if (hw->device_id == IXGBE_DEV_ID_82599_BYPASS) {
+		media_type = ixgbe_media_type_fiber;
+	} else {
+		media_type = ixgbe_get_media_type_82599(hw);
+	}
+	return media_type;
+}
+
+/*
+ * Wrapper around shared code (base driver) to support BYPASS nic.
+ */
+s32
+ixgbe_bypass_init_shared_code(struct ixgbe_hw *hw)
+{
+	s32 ret_val;
+
+	if (hw->device_id == IXGBE_DEV_ID_82599_BYPASS) {
+		hw->mac.type = ixgbe_mac_82599EB;
+	}
+
+	ret_val = ixgbe_init_shared_code(hw);
+	if (hw->device_id == IXGBE_DEV_ID_82599_BYPASS) {
+		hw->mac.ops.get_media_type = &ixgbe_bypass_get_media_type;
+		ixgbe_init_mac_link_ops_82599(hw);
+	}
+
+	return ret_val;
+}
+
+s32
+ixgbe_bypass_init_hw(struct ixgbe_hw *hw)
+{
+	int rc;
+
+	if ((rc  = ixgbe_init_hw(hw)) == 0 &&
+			hw->device_id == IXGBE_DEV_ID_82599_BYPASS) {
+
+		hw->mac.ops.setup_link =
+			&ixgbe_setup_mac_link_multispeed_fixed_fiber;
+
+		hw->mac.ops.get_media_type = &ixgbe_bypass_get_media_type;
+
+		hw->mac.ops.disable_tx_laser = NULL;
+                hw->mac.ops.enable_tx_laser = NULL;
+                hw->mac.ops.flap_tx_laser = NULL;
+	}
+
+	return rc;
+}