e1000: remove duplicated phy codes

Add two files base.c and base.h to reduce the redundancy
in the silicon family code.
Remove the code duplication from e1000_82575 files.
Clean family specific functions from base.
Fix up a stray and duplicate function declaration.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Signed-off-by: Guinan Sun <guinanx.sun@intel.com>
Reviewed-by: Wei Zhao <wei.zhao1@intel.com>

Approved by:	imp
Obtained from:	DPDK (44dddd14059f151f39f7e075b887decfc9a10f11)
MFC after:	1 week

(cherry picked from commit 6b9d35fac12bf657cd1df8f1521c70704ff62b61)

13 files changed, 578 insertions, 420 deletions

diff --git a/sys/conf/files b/sys/conf/files
index 5f6ec9a5c546..21239c31e83f 100644
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -1677,6 +1677,8 @@ dev/e1000/e1000_i210.c		optional em \
 	compile-with "${NORMAL_C} -I$S/dev/e1000"
 dev/e1000/e1000_api.c		optional em \
 	compile-with "${NORMAL_C} -I$S/dev/e1000"
+dev/e1000/e1000_base.c		optional em \
+	compile-with "${NORMAL_C} -I$S/dev/e1000"
 dev/e1000/e1000_mac.c		optional em \
 	compile-with "${NORMAL_C} -I$S/dev/e1000"
 dev/e1000/e1000_manage.c	optional em \
diff --git a/sys/dev/e1000/e1000_82575.c b/sys/dev/e1000/e1000_82575.c
index b252a4c7ff1d..172e99b02d5c 100644
--- a/sys/dev/e1000/e1000_82575.c
+++ b/sys/dev/e1000/e1000_82575.c
@@ -48,8 +48,6 @@
 
 static s32  e1000_init_phy_params_82575(struct e1000_hw *hw);
 static s32  e1000_init_mac_params_82575(struct e1000_hw *hw);
-static s32  e1000_acquire_phy_82575(struct e1000_hw *hw);
-static void e1000_release_phy_82575(struct e1000_hw *hw);
 static s32  e1000_acquire_nvm_82575(struct e1000_hw *hw);
 static void e1000_release_nvm_82575(struct e1000_hw *hw);
 static s32  e1000_check_for_link_82575(struct e1000_hw *hw);
@@ -61,6 +59,7 @@ static s32  e1000_phy_hw_reset_sgmii_82575(struct e1000_hw *hw);
 static s32  e1000_read_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset,
 					   u16 *data);
 static s32  e1000_reset_hw_82575(struct e1000_hw *hw);
+static s32  e1000_init_hw_82575(struct e1000_hw *hw);
 static s32  e1000_reset_hw_82580(struct e1000_hw *hw);
 static s32  e1000_read_phy_reg_82580(struct e1000_hw *hw,
 				     u32 offset, u16 *data);
@@ -84,10 +83,8 @@ static s32  e1000_get_pcs_speed_and_duplex_82575(struct e1000_hw *hw,
 						 u16 *speed, u16 *duplex);
 static s32  e1000_get_phy_id_82575(struct e1000_hw *hw);
 static bool e1000_sgmii_active_82575(struct e1000_hw *hw);
-static s32  e1000_reset_init_script_82575(struct e1000_hw *hw);
 static s32  e1000_read_mac_addr_82575(struct e1000_hw *hw);
 static void e1000_config_collision_dist_82575(struct e1000_hw *hw);
-static void e1000_power_down_phy_copper_82575(struct e1000_hw *hw);
 static void e1000_shutdown_serdes_link_82575(struct e1000_hw *hw);
 static void e1000_power_up_serdes_link_82575(struct e1000_hw *hw);
 static s32 e1000_set_pcie_completion_timeout(struct e1000_hw *hw);
@@ -156,8 +153,8 @@ static bool e1000_sgmii_uses_mdio_82575(struct e1000_hw *hw)
 }
 
 /**
- *  e1000_init_phy_params_82575 - Init PHY func ptrs.
- *  @hw: pointer to the HW structure
+ * e1000_init_phy_params_82575 - Initialize PHY function ptrs
+ * @hw: pointer to the HW structure
  **/
 static s32 e1000_init_phy_params_82575(struct e1000_hw *hw)
 {
@@ -175,17 +172,17 @@ static s32 e1000_init_phy_params_82575(struct e1000_hw *hw)
 		goto out;
 	}
 
-	phy->ops.power_up   = e1000_power_up_phy_copper;
-	phy->ops.power_down = e1000_power_down_phy_copper_82575;
+	phy->ops.power_up	= e1000_power_up_phy_copper;
+	phy->ops.power_down	= e1000_power_down_phy_copper_base;
 
 	phy->autoneg_mask	= AUTONEG_ADVERTISE_SPEED_DEFAULT;
 	phy->reset_delay_us	= 100;
 
-	phy->ops.acquire	= e1000_acquire_phy_82575;
+	phy->ops.acquire	= e1000_acquire_phy_base;
 	phy->ops.check_reset_block = e1000_check_reset_block_generic;
 	phy->ops.commit		= e1000_phy_sw_reset_generic;
 	phy->ops.get_cfg_done	= e1000_get_cfg_done_82575;
-	phy->ops.release	= e1000_release_phy_82575;
+	phy->ops.release	= e1000_release_phy_base;
 
 	ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT);
 
@@ -232,76 +229,39 @@ static s32 e1000_init_phy_params_82575(struct e1000_hw *hw)
 	case I347AT4_E_PHY_ID:
 	case M88E1112_E_PHY_ID:
 	case M88E1340M_E_PHY_ID:
+		phy->type		= e1000_phy_m88;
+		phy->ops.check_polarity	= e1000_check_polarity_m88;
+		phy->ops.get_info	= e1000_get_phy_info_m88;
+		phy->ops.get_cable_length = e1000_get_cable_length_m88_gen2;
+		phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_m88;
+		break;
 	case M88E1111_I_PHY_ID:
 		phy->type		= e1000_phy_m88;
 		phy->ops.check_polarity	= e1000_check_polarity_m88;
 		phy->ops.get_info	= e1000_get_phy_info_m88;
-		if (phy->id == I347AT4_E_PHY_ID ||
-		    phy->id == M88E1112_E_PHY_ID ||
-		    phy->id == M88E1340M_E_PHY_ID)
-			phy->ops.get_cable_length =
-					 e1000_get_cable_length_m88_gen2;
-		else if (phy->id == M88E1543_E_PHY_ID ||
-			 phy->id == M88E1512_E_PHY_ID)
-			phy->ops.get_cable_length =
-					 e1000_get_cable_length_m88_gen2;
-		else
-			phy->ops.get_cable_length = e1000_get_cable_length_m88;
+		phy->ops.get_cable_length = e1000_get_cable_length_m88;
 		phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_m88;
-		/* Check if this PHY is confgured for media swap. */
-		if (phy->id == M88E1112_E_PHY_ID) {
-			u16 data;
-
-			ret_val = phy->ops.write_reg(hw,
-						     E1000_M88E1112_PAGE_ADDR,
-						     2);
-			if (ret_val)
-				goto out;
-
-			ret_val = phy->ops.read_reg(hw,
-						    E1000_M88E1112_MAC_CTRL_1,
-						    &data);
-			if (ret_val)
-				goto out;
-
-			data = (data & E1000_M88E1112_MAC_CTRL_1_MODE_MASK) >>
-			       E1000_M88E1112_MAC_CTRL_1_MODE_SHIFT;
-			if (data == E1000_M88E1112_AUTO_COPPER_SGMII ||
-			    data == E1000_M88E1112_AUTO_COPPER_BASEX)
-				hw->mac.ops.check_for_link =
-						e1000_check_for_link_media_swap;
-		}
-		if (phy->id == M88E1512_E_PHY_ID) {
-			ret_val = e1000_initialize_M88E1512_phy(hw);
-			if (ret_val)
-				goto out;
-		}
-		if (phy->id == M88E1543_E_PHY_ID) {
-			ret_val = e1000_initialize_M88E1543_phy(hw);
-			if (ret_val)
-				goto out;
-		}
 		break;
 	case IGP03E1000_E_PHY_ID:
 	case IGP04E1000_E_PHY_ID:
-		phy->type = e1000_phy_igp_3;
-		phy->ops.check_polarity = e1000_check_polarity_igp;
-		phy->ops.get_info = e1000_get_phy_info_igp;
+		phy->type		= e1000_phy_igp_3;
+		phy->ops.check_polarity	= e1000_check_polarity_igp;
+		phy->ops.get_info	= e1000_get_phy_info_igp;
 		phy->ops.get_cable_length = e1000_get_cable_length_igp_2;
-		phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_igp;
 		phy->ops.set_d0_lplu_state = e1000_set_d0_lplu_state_82575;
 		phy->ops.set_d3_lplu_state = e1000_set_d3_lplu_state_generic;
+		phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_igp;
 		break;
 	case I82580_I_PHY_ID:
 	case I350_I_PHY_ID:
-		phy->type = e1000_phy_82580;
-		phy->ops.check_polarity = e1000_check_polarity_82577;
-		phy->ops.force_speed_duplex =
-					 e1000_phy_force_speed_duplex_82577;
+		phy->type		= e1000_phy_82580;
+		phy->ops.check_polarity	= e1000_check_polarity_82577;
+		phy->ops.get_info	= e1000_get_phy_info_82577;
 		phy->ops.get_cable_length = e1000_get_cable_length_82577;
-		phy->ops.get_info = e1000_get_phy_info_82577;
 		phy->ops.set_d0_lplu_state = e1000_set_d0_lplu_state_82580;
 		phy->ops.set_d3_lplu_state = e1000_set_d3_lplu_state_82580;
+		phy->ops.force_speed_duplex =
+				e1000_phy_force_speed_duplex_82577;
 		break;
 	case I210_I_PHY_ID:
 		phy->type		= e1000_phy_i210;
@@ -317,98 +277,49 @@ static s32 e1000_init_phy_params_82575(struct e1000_hw *hw)
 		goto out;
 	}
 
-out:
-	return ret_val;
-}
-
-/**
- *  e1000_init_nvm_params_82575 - Init NVM func ptrs.
- *  @hw: pointer to the HW structure
- **/
-s32 e1000_init_nvm_params_82575(struct e1000_hw *hw)
-{
-	struct e1000_nvm_info *nvm = &hw->nvm;
-	u32 eecd = E1000_READ_REG(hw, E1000_EECD);
-	u16 size;
-
-	DEBUGFUNC("e1000_init_nvm_params_82575");
-
-	size = (u16)((eecd & E1000_EECD_SIZE_EX_MASK) >>
-		     E1000_EECD_SIZE_EX_SHIFT);
-	/*
-	 * Added to a constant, "size" becomes the left-shift value
-	 * for setting word_size.
-	 */
-	size += NVM_WORD_SIZE_BASE_SHIFT;
-
-	/* Just in case size is out of range, cap it to the largest
-	 * EEPROM size supported
-	 */
-	if (size > 15)
-		size = 15;
-
-	nvm->word_size = 1 << size;
-	if (hw->mac.type < e1000_i210) {
-		nvm->opcode_bits = 8;
-		nvm->delay_usec = 1;
+	/* Check if this PHY is configured for media swap. */
+	switch (phy->id) {
+	case M88E1112_E_PHY_ID:
+	{
+		u16 data;
 
-		switch (nvm->override) {
-		case e1000_nvm_override_spi_large:
-			nvm->page_size = 32;
-			nvm->address_bits = 16;
-			break;
-		case e1000_nvm_override_spi_small:
-			nvm->page_size = 8;
-			nvm->address_bits = 8;
-			break;
-		default:
-			nvm->page_size = eecd & E1000_EECD_ADDR_BITS ? 32 : 8;
-			nvm->address_bits = eecd & E1000_EECD_ADDR_BITS ?
-					    16 : 8;
-			break;
-		}
-		if (nvm->word_size == (1 << 15))
-			nvm->page_size = 128;
+		ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 2);
+		if (ret_val)
+			goto out;
+		ret_val = phy->ops.read_reg(hw, E1000_M88E1112_MAC_CTRL_1,
+					    &data);
+		if (ret_val)
+			goto out;
 
-		nvm->type = e1000_nvm_eeprom_spi;
-	} else {
-		nvm->type = e1000_nvm_flash_hw;
+		data = (data & E1000_M88E1112_MAC_CTRL_1_MODE_MASK) >>
+			E1000_M88E1112_MAC_CTRL_1_MODE_SHIFT;
+		if (data == E1000_M88E1112_AUTO_COPPER_SGMII ||
+		    data == E1000_M88E1112_AUTO_COPPER_BASEX)
+			hw->mac.ops.check_for_link =
+						e1000_check_for_link_media_swap;
+		break;
 	}
-
-	/* Function Pointers */
-	nvm->ops.acquire = e1000_acquire_nvm_82575;
-	nvm->ops.release = e1000_release_nvm_82575;
-	if (nvm->word_size < (1 << 15))
-		nvm->ops.read = e1000_read_nvm_eerd;
-	else
-		nvm->ops.read = e1000_read_nvm_spi;
-
-	nvm->ops.write = e1000_write_nvm_spi;
-	nvm->ops.validate = e1000_validate_nvm_checksum_generic;
-	nvm->ops.update = e1000_update_nvm_checksum_generic;
-	nvm->ops.valid_led_default = e1000_valid_led_default_82575;
-
-	/* override generic family function pointers for specific descendants */
-	switch (hw->mac.type) {
-	case e1000_82580:
-		nvm->ops.validate = e1000_validate_nvm_checksum_82580;
-		nvm->ops.update = e1000_update_nvm_checksum_82580;
+	case M88E1512_E_PHY_ID:
+	{
+		ret_val = e1000_initialize_M88E1512_phy(hw);
 		break;
-	case e1000_i350:
-	case e1000_i354:
-		nvm->ops.validate = e1000_validate_nvm_checksum_i350;
-		nvm->ops.update = e1000_update_nvm_checksum_i350;
+	}
+	case M88E1543_E_PHY_ID:
+	{
+		ret_val = e1000_initialize_M88E1543_phy(hw);
 		break;
+	}
 	default:
-		break;
+		goto out;
 	}
 
-	return E1000_SUCCESS;
+out:
+	return ret_val;
 }
 
 /**
- *  e1000_init_mac_params_82575 - Init MAC func ptrs.
- *  @hw: pointer to the HW structure
+ * e1000_init_mac_params_82575 - Init MAC func ptrs.
+ * @hw: pointer to the HW structure
  **/
 static s32 e1000_init_mac_params_82575(struct e1000_hw *hw)
 {
@@ -417,13 +328,16 @@ static s32 e1000_init_mac_params_82575(struct e1000_hw *hw)
 
 	DEBUGFUNC("e1000_init_mac_params_82575");
 
+	/* Initialize function pointer */
+	e1000_init_mac_ops_generic(hw);
+
 	/* Derives media type */
 	e1000_get_media_type_82575(hw);
-	/* Set mta register count */
+	/* Set MTA register count */
 	mac->mta_reg_count = 128;
-	/* Set uta register count */
+	/* Set UTA register count */
 	mac->uta_reg_count = (hw->mac.type == e1000_82575) ? 0 : 128;
-	/* Set rar entry count */
+	/* Set RAR entry count */
 	mac->rar_entry_count = E1000_RAR_ENTRIES_82575;
 	if (mac->type == e1000_82576)
 		mac->rar_entry_count = E1000_RAR_ENTRIES_82576;
@@ -456,8 +370,8 @@ static s32 e1000_init_mac_params_82575(struct e1000_hw *hw)
 	if (mac->type >= e1000_82580)
 		mac->ops.reset_hw = e1000_reset_hw_82580;
 	else
-	mac->ops.reset_hw = e1000_reset_hw_82575;
-	/* hw initialization */
+		mac->ops.reset_hw = e1000_reset_hw_82575;
+	/* HW initialization */
 	if ((mac->type == e1000_i210) || (mac->type == e1000_i211))
 		mac->ops.init_hw = e1000_init_hw_i210;
 	else
@@ -493,7 +407,7 @@ static s32 e1000_init_mac_params_82575(struct e1000_hw *hw)
 	}
 	if (hw->mac.type >= e1000_82580)
 		mac->ops.validate_mdi_setting =
-				e1000_validate_mdi_setting_crossover_generic;
+			e1000_validate_mdi_setting_crossover_generic;
 	/* ID LED init */
 	mac->ops.id_led_init = e1000_id_led_init_generic;
 	/* blink LED */
@@ -511,6 +425,7 @@ static s32 e1000_init_mac_params_82575(struct e1000_hw *hw)
 	mac->ops.get_link_up_info = e1000_get_link_up_info_82575;
 	/* acquire SW_FW sync */
 	mac->ops.acquire_swfw_sync = e1000_acquire_swfw_sync;
+	/* release SW_FW sync */
 	mac->ops.release_swfw_sync = e1000_release_swfw_sync;
 
 	/* set lan id for port to determine which phy lock to use */
@@ -520,63 +435,102 @@ static s32 e1000_init_mac_params_82575(struct e1000_hw *hw)
 }
 
 /**
- *  e1000_init_function_pointers_82575 - Init func ptrs.
- *  @hw: pointer to the HW structure
- *
- *  Called to initialize all function pointers and parameters.
+ * e1000_init_nvm_params_82575 - Initialize NVM function ptrs
+ * @hw: pointer to the HW structure
  **/
-void e1000_init_function_pointers_82575(struct e1000_hw *hw)
+s32 e1000_init_nvm_params_82575(struct e1000_hw *hw)
 {
-	DEBUGFUNC("e1000_init_function_pointers_82575");
+	struct e1000_nvm_info *nvm = &hw->nvm;
+	u32 eecd = E1000_READ_REG(hw, E1000_EECD);
+	u16 size;
 
-	hw->mac.ops.init_params = e1000_init_mac_params_82575;
-	hw->nvm.ops.init_params = e1000_init_nvm_params_82575;
-	hw->phy.ops.init_params = e1000_init_phy_params_82575;
-	hw->mbx.ops.init_params = e1000_init_mbx_params_pf;
-}
+	DEBUGFUNC("e1000_init_nvm_params_82575");
 
-/**
- *  e1000_acquire_phy_82575 - Acquire rights to access PHY
- *  @hw: pointer to the HW structure
- *
- *  Acquire access rights to the correct PHY.
- **/
-static s32 e1000_acquire_phy_82575(struct e1000_hw *hw)
-{
-	u16 mask = E1000_SWFW_PHY0_SM;
+	size = (u16)((eecd & E1000_EECD_SIZE_EX_MASK) >>
+		     E1000_EECD_SIZE_EX_SHIFT);
+	/* Added to a constant, "size" becomes the left-shift value
+	 * for setting word_size.
+	 */
+	size += NVM_WORD_SIZE_BASE_SHIFT;
 
-	DEBUGFUNC("e1000_acquire_phy_82575");
+	/* Just in case size is out of range, cap it to the largest
+	 * EEPROM size supported
+	 */
+	if (size > 15)
+		size = 15;
 
-	if (hw->bus.func == E1000_FUNC_1)
-		mask = E1000_SWFW_PHY1_SM;
-	else if (hw->bus.func == E1000_FUNC_2)
-		mask = E1000_SWFW_PHY2_SM;
-	else if (hw->bus.func == E1000_FUNC_3)
-		mask = E1000_SWFW_PHY3_SM;
+	nvm->word_size = 1 << size;
+	if (hw->mac.type < e1000_i210) {
+		nvm->opcode_bits = 8;
+		nvm->delay_usec = 1;
+
+		switch (nvm->override) {
+		case e1000_nvm_override_spi_large:
+			nvm->page_size = 32;
+			nvm->address_bits = 16;
+			break;
+		case e1000_nvm_override_spi_small:
+			nvm->page_size = 8;
+			nvm->address_bits = 8;
+			break;
+		default:
+			nvm->page_size = eecd & E1000_EECD_ADDR_BITS ? 32 : 8;
+			nvm->address_bits = eecd & E1000_EECD_ADDR_BITS ?
+					    16 : 8;
+			break;
+		}
+		if (nvm->word_size == (1 << 15))
+			nvm->page_size = 128;
+
+		nvm->type = e1000_nvm_eeprom_spi;
+	} else {
+		nvm->type = e1000_nvm_flash_hw;
+	}
+
+	/* Function Pointers */
+	nvm->ops.acquire = e1000_acquire_nvm_82575;
+	nvm->ops.release = e1000_release_nvm_82575;
+	if (nvm->word_size < (1 << 15))
+		nvm->ops.read = e1000_read_nvm_eerd;
+	else
+		nvm->ops.read = e1000_read_nvm_spi;
+
+	nvm->ops.write = e1000_write_nvm_spi;
+	nvm->ops.validate = e1000_validate_nvm_checksum_generic;
+	nvm->ops.update = e1000_update_nvm_checksum_generic;
+	nvm->ops.valid_led_default = e1000_valid_led_default_82575;
+
+	/* override generic family function pointers for specific descendants */
+	switch (hw->mac.type) {
+	case e1000_82580:
+		nvm->ops.validate = e1000_validate_nvm_checksum_82580;
+		nvm->ops.update = e1000_update_nvm_checksum_82580;
+		break;
+	case e1000_i350:
+		nvm->ops.validate = e1000_validate_nvm_checksum_i350;
+		nvm->ops.update = e1000_update_nvm_checksum_i350;
+		break;
+	default:
+		break;
+	}
 
-	return hw->mac.ops.acquire_swfw_sync(hw, mask);
+	return E1000_SUCCESS;
 }
 
 /**
- *  e1000_release_phy_82575 - Release rights to access PHY
+ *  e1000_init_function_pointers_82575 - Init func ptrs.
  *  @hw: pointer to the HW structure
  *
- *  A wrapper to release access rights to the correct PHY.
+ *  Called to initialize all function pointers and parameters.
  **/
-static void e1000_release_phy_82575(struct e1000_hw *hw)
+void e1000_init_function_pointers_82575(struct e1000_hw *hw)
 {
-	u16 mask = E1000_SWFW_PHY0_SM;
-
-	DEBUGFUNC("e1000_release_phy_82575");
-
-	if (hw->bus.func == E1000_FUNC_1)
-		mask = E1000_SWFW_PHY1_SM;
-	else if (hw->bus.func == E1000_FUNC_2)
-		mask = E1000_SWFW_PHY2_SM;
-	else if (hw->bus.func == E1000_FUNC_3)
-		mask = E1000_SWFW_PHY3_SM;
+	DEBUGFUNC("e1000_init_function_pointers_82575");
 
-	hw->mac.ops.release_swfw_sync(hw, mask);
+	hw->mac.ops.init_params = e1000_init_mac_params_82575;
+	hw->nvm.ops.init_params = e1000_init_nvm_params_82575;
+	hw->phy.ops.init_params = e1000_init_phy_params_82575;
+	hw->mbx.ops.init_params = e1000_init_mbx_params_pf;
 }
 
 /**
@@ -1401,16 +1355,15 @@ static s32 e1000_reset_hw_82575(struct e1000_hw *hw)
 }
 
 /**
- *  e1000_init_hw_82575 - Initialize hardware
- *  @hw: pointer to the HW structure
+ * e1000_init_hw_82575 - Initialize hardware
+ * @hw: pointer to the HW structure
  *
- *  This inits the hardware readying it for operation.
+ * This inits the hardware readying it for operation.
  **/
-s32 e1000_init_hw_82575(struct e1000_hw *hw)
+STATIC s32 e1000_init_hw_82575(struct e1000_hw *hw)
 {
 	struct e1000_mac_info *mac = &hw->mac;
 	s32 ret_val;
-	u16 i, rar_count = mac->rar_entry_count;
 
 	DEBUGFUNC("e1000_init_hw_82575");
 
@@ -1425,27 +1378,12 @@ s32 e1000_init_hw_82575(struct e1000_hw *hw)
 	DEBUGOUT("Initializing the IEEE VLAN\n");
 	mac->ops.clear_vfta(hw);
 
-	/* Setup the receive address */
-	e1000_init_rx_addrs_generic(hw, rar_count);
-
-	/* Zero out the Multicast HASH table */
-	DEBUGOUT("Zeroing the MTA\n");
-	for (i = 0; i < mac->mta_reg_count; i++)
-		E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, 0);
-
-	/* Zero out the Unicast HASH table */
-	DEBUGOUT("Zeroing the UTA\n");
-	for (i = 0; i < mac->uta_reg_count; i++)
-		E1000_WRITE_REG_ARRAY(hw, E1000_UTA, i, 0);
-
-	/* Setup link and flow control */
-	ret_val = mac->ops.setup_link(hw);
+	ret_val = e1000_init_hw_base(hw);
 
 	/* Set the default MTU size */
 	hw->dev_spec._82575.mtu = 1500;
 
-	/*
-	 * Clear all of the statistics registers (clear on read).  It is
+	/* Clear all of the statistics registers (clear on read).  It is
 	 * important that we do this after we have tried to establish link
 	 * because the symbol error count will increment wildly if there
 	 * is no link.
@@ -1454,7 +1392,6 @@ s32 e1000_init_hw_82575(struct e1000_hw *hw)
 
 	return ret_val;
 }
-
 /**
  *  e1000_setup_copper_link_82575 - Configure copper link settings
  *  @hw: pointer to the HW structure
@@ -1465,9 +1402,9 @@ s32 e1000_init_hw_82575(struct e1000_hw *hw)
  **/
 static s32 e1000_setup_copper_link_82575(struct e1000_hw *hw)
 {
+	u32 phpm_reg;
 	u32 ctrl;
 	s32 ret_val;
-	u32 phpm_reg;
 
 	DEBUGFUNC("e1000_setup_copper_link_82575");
 
@@ -1889,7 +1826,7 @@ static bool e1000_sgmii_active_82575(struct e1000_hw *hw)
  *  Inits recommended HW defaults after a reset when there is no EEPROM
  *  detected. This is only for the 82575.
  **/
-static s32 e1000_reset_init_script_82575(struct e1000_hw *hw)
+s32 e1000_reset_init_script_82575(struct e1000_hw *hw)
 {
 	DEBUGFUNC("e1000_reset_init_script_82575");
 
@@ -1968,27 +1905,6 @@ static void e1000_config_collision_dist_82575(struct e1000_hw *hw)
 }
 
 /**
- * e1000_power_down_phy_copper_82575 - Remove link during PHY power down
- * @hw: pointer to the HW structure
- *
- * In the case of a PHY power down to save power, or to turn off link during a
- * driver unload, or wake on lan is not enabled, remove the link.
- **/
-static void e1000_power_down_phy_copper_82575(struct e1000_hw *hw)
-{
-	struct e1000_phy_info *phy = &hw->phy;
-
-	if (!(phy->ops.check_reset_block))
-		return;
-
-	/* If the management interface is not enabled, then power down */
-	if (!(e1000_enable_mng_pass_thru(hw) || phy->ops.check_reset_block(hw)))
-		e1000_power_down_phy_copper(hw);
-
-	return;
-}
-
-/**
  *  e1000_clear_hw_cntrs_82575 - Clear device specific hardware counters
  *  @hw: pointer to the HW structure
  *
@@ -2054,85 +1970,6 @@ static void e1000_clear_hw_cntrs_82575(struct e1000_hw *hw)
 }
 
 /**
- *  e1000_rx_fifo_flush_82575 - Clean rx fifo after Rx enable
- *  @hw: pointer to the HW structure
- *
- *  After Rx enable, if manageability is enabled then there is likely some
- *  bad data at the start of the fifo and possibly in the DMA fifo.  This
- *  function clears the fifos and flushes any packets that came in as rx was
- *  being enabled.
- **/
-void e1000_rx_fifo_flush_82575(struct e1000_hw *hw)
-{
-	u32 rctl, rlpml, rxdctl[4], rfctl, temp_rctl, rx_enabled;
-	int i, ms_wait;
-
-	DEBUGFUNC("e1000_rx_fifo_flush_82575");
-
-	/* disable IPv6 options as per hardware errata */
-	rfctl = E1000_READ_REG(hw, E1000_RFCTL);
-	rfctl |= E1000_RFCTL_IPV6_EX_DIS;
-	E1000_WRITE_REG(hw, E1000_RFCTL, rfctl);
-
-	if (hw->mac.type != e1000_82575 ||
-	    !(E1000_READ_REG(hw, E1000_MANC) & E1000_MANC_RCV_TCO_EN))
-		return;
-
-	/* Disable all Rx queues */
-	for (i = 0; i < 4; i++) {
-		rxdctl[i] = E1000_READ_REG(hw, E1000_RXDCTL(i));
-		E1000_WRITE_REG(hw, E1000_RXDCTL(i),
-				rxdctl[i] & ~E1000_RXDCTL_QUEUE_ENABLE);
-	}
-	/* Poll all queues to verify they have shut down */
-	for (ms_wait = 0; ms_wait < 10; ms_wait++) {
-		msec_delay(1);
-		rx_enabled = 0;
-		for (i = 0; i < 4; i++)
-			rx_enabled |= E1000_READ_REG(hw, E1000_RXDCTL(i));
-		if (!(rx_enabled & E1000_RXDCTL_QUEUE_ENABLE))
-			break;
-	}
-
-	if (ms_wait == 10)
-		DEBUGOUT("Queue disable timed out after 10ms\n");
-
-	/* Clear RLPML, RCTL.SBP, RFCTL.LEF, and set RCTL.LPE so that all
-	 * incoming packets are rejected.  Set enable and wait 2ms so that
-	 * any packet that was coming in as RCTL.EN was set is flushed
-	 */
-	E1000_WRITE_REG(hw, E1000_RFCTL, rfctl & ~E1000_RFCTL_LEF);
-
-	rlpml = E1000_READ_REG(hw, E1000_RLPML);
-	E1000_WRITE_REG(hw, E1000_RLPML, 0);
-
-	rctl = E1000_READ_REG(hw, E1000_RCTL);
-	temp_rctl = rctl & ~(E1000_RCTL_EN | E1000_RCTL_SBP);
-	temp_rctl |= E1000_RCTL_LPE;
-
-	E1000_WRITE_REG(hw, E1000_RCTL, temp_rctl);
-	E1000_WRITE_REG(hw, E1000_RCTL, temp_rctl | E1000_RCTL_EN);
-	E1000_WRITE_FLUSH(hw);
-	msec_delay(2);
-
-	/* Enable Rx queues that were previously enabled and restore our
-	 * previous state
-	 */
-	for (i = 0; i < 4; i++)
-		E1000_WRITE_REG(hw, E1000_RXDCTL(i), rxdctl[i]);
-	E1000_WRITE_REG(hw, E1000_RCTL, rctl);
-	E1000_WRITE_FLUSH(hw);
-
-	E1000_WRITE_REG(hw, E1000_RLPML, rlpml);
-	E1000_WRITE_REG(hw, E1000_RFCTL, rfctl);
-
-	/* Flush receive errors generated by workaround */
-	E1000_READ_REG(hw, E1000_ROC);
-	E1000_READ_REG(hw, E1000_RNBC);
-	E1000_READ_REG(hw, E1000_MPC);
-}
-
-/**
  *  e1000_set_pcie_completion_timeout - set pci-e completion timeout
  *  @hw: pointer to the HW structure
  *
diff --git a/sys/dev/e1000/e1000_82575.h b/sys/dev/e1000/e1000_82575.h
index 22c2f8c4a2f5..d6665bfe64dd 100644
--- a/sys/dev/e1000/e1000_82575.h
+++ b/sys/dev/e1000/e1000_82575.h
@@ -56,9 +56,7 @@
 #define E1000_RAR_ENTRIES_I350	32
 #define E1000_SW_SYNCH_MB	0x00000100
 #define E1000_STAT_DEV_RST_SET	0x00100000
-#define E1000_CTRL_DEV_RST	0x20000000
 
-#ifdef E1000_BIT_FIELDS
 struct e1000_adv_data_desc {
 	__le64 buffer_addr;    /* Address of the descriptor's data buffer */
 	union {
@@ -121,7 +119,6 @@ struct e1000_adv_context_desc {
 		} fields;
 	} l4_setup;
 };
-#endif
 
 /* SRRCTL bit definitions */
 #define E1000_SRRCTL_BSIZEPKT_SHIFT		10 /* Shift _right_ */
@@ -181,46 +178,12 @@ struct e1000_adv_context_desc {
 /* Immediate Interrupt Rx (A.K.A. Low Latency Interrupt) */
 #define E1000_IMIR_PORT_IM_EN	0x00010000  /* TCP port enable */
 #define E1000_IMIR_PORT_BP	0x00020000  /* TCP port check bypass */
-#define E1000_IMIREXT_SIZE_BP	0x00001000  /* Packet size bypass */
 #define E1000_IMIREXT_CTRL_URG	0x00002000  /* Check URG bit in header */
 #define E1000_IMIREXT_CTRL_ACK	0x00004000  /* Check ACK bit in header */
 #define E1000_IMIREXT_CTRL_PSH	0x00008000  /* Check PSH bit in header */
 #define E1000_IMIREXT_CTRL_RST	0x00010000  /* Check RST bit in header */
 #define E1000_IMIREXT_CTRL_SYN	0x00020000  /* Check SYN bit in header */
 #define E1000_IMIREXT_CTRL_FIN	0x00040000  /* Check FIN bit in header */
-#define E1000_IMIREXT_CTRL_BP	0x00080000  /* Bypass check of ctrl bits */
-
-/* Receive Descriptor - Advanced */
-union e1000_adv_rx_desc {
-	struct {
-		__le64 pkt_addr; /* Packet buffer address */
-		__le64 hdr_addr; /* Header buffer address */
-	} read;
-	struct {
-		struct {
-			union {
-				__le32 data;
-				struct {
-					__le16 pkt_info; /*RSS type, Pkt type*/
-					/* Split Header, header buffer len */
-					__le16 hdr_info;
-				} hs_rss;
-			} lo_dword;
-			union {
-				__le32 rss; /* RSS Hash */
-				struct {
-					__le16 ip_id; /* IP id */
-					__le16 csum; /* Packet Checksum */
-				} csum_ip;
-			} hi_dword;
-		} lower;
-		struct {
-			__le32 status_error; /* ext status/error */
-			__le16 length; /* Packet length */
-			__le16 vlan; /* VLAN tag */
-		} upper;
-	} wb;  /* writeback */
-};
 
 #define E1000_RXDADV_RSSTYPE_MASK	0x0000000F
 #define E1000_RXDADV_RSSTYPE_SHIFT	12
@@ -229,7 +192,6 @@ union e1000_adv_rx_desc {
 #define E1000_RXDADV_SPLITHEADER_EN	0x00001000
 #define E1000_RXDADV_SPH		0x8000
 #define E1000_RXDADV_STAT_TS		0x10000 /* Pkt was time stamped */
-#define E1000_RXDADV_STAT_TSIP		0x08000 /* timestamp in packet */
 #define E1000_RXDADV_ERR_HBO		0x00800000
 
 /* RSS Hash results */
@@ -278,20 +240,6 @@ union e1000_adv_rx_desc {
 #define E1000_RXDADV_IPSEC_ERROR_INVALID_LENGTH		0x10000000
 #define E1000_RXDADV_IPSEC_ERROR_AUTHENTICATION_FAILED	0x18000000
 
-/* Transmit Descriptor - Advanced */
-union e1000_adv_tx_desc {
-	struct {
-		__le64 buffer_addr;    /* Address of descriptor's data buf */
-		__le32 cmd_type_len;
-		__le32 olinfo_status;
-	} read;
-	struct {
-		__le64 rsvd;       /* Reserved */
-		__le32 nxtseq_seed;
-		__le32 status;
-	} wb;
-};
-
 /* Adv Transmit Descriptor Config Masks */
 #define E1000_ADVTXD_DTYP_CTXT	0x00200000 /* Advanced Context Descriptor */
 #define E1000_ADVTXD_DTYP_DATA	0x00300000 /* Advanced Data Descriptor */
@@ -314,33 +262,6 @@ union e1000_adv_tx_desc {
 #define E1000_ADVTXD_POPTS_IPSEC	0x00000400 /* IPSec offload request */
 #define E1000_ADVTXD_PAYLEN_SHIFT	14 /* Adv desc PAYLEN shift */
 
-/* Context descriptors */
-struct e1000_adv_tx_context_desc {
-	__le32 vlan_macip_lens;
-	__le32 seqnum_seed;
-	__le32 type_tucmd_mlhl;
-	__le32 mss_l4len_idx;
-};
-
-#define E1000_ADVTXD_MACLEN_SHIFT	9  /* Adv ctxt desc mac len shift */
-#define E1000_ADVTXD_VLAN_SHIFT		16  /* Adv ctxt vlan tag shift */
-#define E1000_ADVTXD_TUCMD_IPV4		0x00000400  /* IP Packet Type: 1=IPv4 */
-#define E1000_ADVTXD_TUCMD_IPV6		0x00000000  /* IP Packet Type: 0=IPv6 */
-#define E1000_ADVTXD_TUCMD_L4T_UDP	0x00000000  /* L4 Packet TYPE of UDP */
-#define E1000_ADVTXD_TUCMD_L4T_TCP	0x00000800  /* L4 Packet TYPE of TCP */
-#define E1000_ADVTXD_TUCMD_L4T_SCTP	0x00001000  /* L4 Packet TYPE of SCTP */
-#define E1000_ADVTXD_TUCMD_IPSEC_TYPE_ESP	0x00002000 /* IPSec Type ESP */
-/* IPSec Encrypt Enable for ESP */
-#define E1000_ADVTXD_TUCMD_IPSEC_ENCRYPT_EN	0x00004000
-/* Req requires Markers and CRC */
-#define E1000_ADVTXD_TUCMD_MKRREQ	0x00002000
-#define E1000_ADVTXD_L4LEN_SHIFT	8  /* Adv ctxt L4LEN shift */
-#define E1000_ADVTXD_MSS_SHIFT		16  /* Adv ctxt MSS shift */
-/* Adv ctxt IPSec SA IDX mask */
-#define E1000_ADVTXD_IPSEC_SA_INDEX_MASK	0x000000FF
-/* Adv ctxt IPSec ESP len mask */
-#define E1000_ADVTXD_IPSEC_ESP_LEN_MASK		0x000000FF
-
 /* Additional Transmit Descriptor Control definitions */
 #define E1000_TXDCTL_QUEUE_ENABLE	0x02000000 /* Ena specific Tx Queue */
 #define E1000_TXDCTL_SWFLSH		0x04000000 /* Tx Desc. wbk flushing */
@@ -380,11 +301,6 @@ struct e1000_adv_tx_context_desc {
 #define E1000_IMS_LSECPNS	E1000_ICR_LSECPNS /* PN threshold - server */
 #define E1000_ICS_LSECPNS	E1000_ICR_LSECPNS /* PN threshold - server */
 
-/* ETQF register bit definitions */
-#define E1000_ETQF_FILTER_ENABLE	(1 << 26)
-#define E1000_ETQF_IMM_INT		(1 << 29)
-#define E1000_ETQF_1588			(1 << 30)
-#define E1000_ETQF_QUEUE_ENABLE		(1U << 31)
 /*
  * ETQF filter list: one static filter per filter consumer. This is
  *                   to avoid filter collisions later. Add new filters
@@ -395,10 +311,6 @@ struct e1000_adv_tx_context_desc {
  */
 #define E1000_ETQF_FILTER_EAPOL		0
 
-#define E1000_FTQF_VF_BP		0x00008000
-#define E1000_FTQF_1588_TIME_STAMP	0x08000000
-#define E1000_FTQF_MASK			0xF0000000
-#define E1000_FTQF_MASK_PROTO_BP	0x10000000
 #define E1000_FTQF_MASK_SOURCE_ADDR_BP	0x20000000
 #define E1000_FTQF_MASK_DEST_ADDR_BP	0x40000000
 #define E1000_FTQF_MASK_SOURCE_PORT_BP	0x80000000
@@ -474,13 +386,14 @@ struct e1000_adv_tx_context_desc {
 
 #define ALL_QUEUES		0xFFFF
 
+s32 e1000_reset_init_script_82575(struct e1000_hw *hw);
+s32 e1000_init_nvm_params_82575(struct e1000_hw *hw);
+
 /* Rx packet buffer size defines */
 #define E1000_RXPBS_SIZE_MASK_82576	0x0000007F
 void e1000_vmdq_set_loopback_pf(struct e1000_hw *hw, bool enable);
 void e1000_vmdq_set_anti_spoofing_pf(struct e1000_hw *hw, bool enable, int pf);
 void e1000_vmdq_set_replication_pf(struct e1000_hw *hw, bool enable);
-s32 e1000_init_nvm_params_82575(struct e1000_hw *hw);
-s32  e1000_init_hw_82575(struct e1000_hw *hw);
 
 enum e1000_promisc_type {
 	e1000_promisc_disabled = 0,   /* all promisc modes disabled */
diff --git a/sys/dev/e1000/e1000_api.h b/sys/dev/e1000/e1000_api.h
index 7e052910e7d0..db4caac37e97 100644
--- a/sys/dev/e1000/e1000_api.h
+++ b/sys/dev/e1000/e1000_api.h
@@ -46,7 +46,6 @@ extern void e1000_init_function_pointers_82541(struct e1000_hw *hw);
 extern void e1000_init_function_pointers_80003es2lan(struct e1000_hw *hw);
 extern void e1000_init_function_pointers_ich8lan(struct e1000_hw *hw);
 extern void e1000_init_function_pointers_82575(struct e1000_hw *hw);
-extern void e1000_rx_fifo_flush_82575(struct e1000_hw *hw);
 extern void e1000_init_function_pointers_vf(struct e1000_hw *hw);
 extern void e1000_power_up_fiber_serdes_link(struct e1000_hw *hw);
 extern void e1000_shutdown_fiber_serdes_link(struct e1000_hw *hw);
diff --git a/sys/dev/e1000/e1000_base.c b/sys/dev/e1000/e1000_base.c
new file mode 100644
index 000000000000..e12a5fbecf25
--- /dev/null
+++ b/sys/dev/e1000/e1000_base.c
@@ -0,0 +1,221 @@
+/******************************************************************************
+  SPDX-License-Identifier: BSD-3-Clause
+
+  Copyright (c) 2001-2020, 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.
+
+******************************************************************************/
+/*$FreeBSD$*/
+
+#include "e1000_hw.h"
+#include "e1000_82575.h"
+#include "e1000_mac.h"
+#include "e1000_base.h"
+#include "e1000_manage.h"
+
+/**
+ *  e1000_acquire_phy_base - Acquire rights to access PHY
+ *  @hw: pointer to the HW structure
+ *
+ *  Acquire access rights to the correct PHY.
+ **/
+s32 e1000_acquire_phy_base(struct e1000_hw *hw)
+{
+	u16 mask = E1000_SWFW_PHY0_SM;
+
+	DEBUGFUNC("e1000_acquire_phy_base");
+
+	if (hw->bus.func == E1000_FUNC_1)
+		mask = E1000_SWFW_PHY1_SM;
+	else if (hw->bus.func == E1000_FUNC_2)
+		mask = E1000_SWFW_PHY2_SM;
+	else if (hw->bus.func == E1000_FUNC_3)
+		mask = E1000_SWFW_PHY3_SM;
+
+	return hw->mac.ops.acquire_swfw_sync(hw, mask);
+}
+
+/**
+ *  e1000_release_phy_base - Release rights to access PHY
+ *  @hw: pointer to the HW structure
+ *
+ *  A wrapper to release access rights to the correct PHY.
+ **/
+void e1000_release_phy_base(struct e1000_hw *hw)
+{
+	u16 mask = E1000_SWFW_PHY0_SM;
+
+	DEBUGFUNC("e1000_release_phy_base");
+
+	if (hw->bus.func == E1000_FUNC_1)
+		mask = E1000_SWFW_PHY1_SM;
+	else if (hw->bus.func == E1000_FUNC_2)
+		mask = E1000_SWFW_PHY2_SM;
+	else if (hw->bus.func == E1000_FUNC_3)
+		mask = E1000_SWFW_PHY3_SM;
+
+	hw->mac.ops.release_swfw_sync(hw, mask);
+}
+
+/**
+ *  e1000_init_hw_base - Initialize hardware
+ *  @hw: pointer to the HW structure
+ *
+ *  This inits the hardware readying it for operation.
+ **/
+s32 e1000_init_hw_base(struct e1000_hw *hw)
+{
+	struct e1000_mac_info *mac = &hw->mac;
+	s32 ret_val;
+	u16 i, rar_count = mac->rar_entry_count;
+
+	DEBUGFUNC("e1000_init_hw_base");
+
+	/* Setup the receive address */
+	e1000_init_rx_addrs_generic(hw, rar_count);
+
+	/* Zero out the Multicast HASH table */
+	DEBUGOUT("Zeroing the MTA\n");
+	for (i = 0; i < mac->mta_reg_count; i++)
+		E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, 0);
+
+	/* Zero out the Unicast HASH table */
+	DEBUGOUT("Zeroing the UTA\n");
+	for (i = 0; i < mac->uta_reg_count; i++)
+		E1000_WRITE_REG_ARRAY(hw, E1000_UTA, i, 0);
+
+	/* Setup link and flow control */
+	ret_val = mac->ops.setup_link(hw);
+
+	/* Clear all of the statistics registers (clear on read).  It is
+	 * important that we do this after we have tried to establish link
+	 * because the symbol error count will increment wildly if there
+	 * is no link.
+	 */
+	e1000_clear_hw_cntrs_base_generic(hw);
+
+	return ret_val;
+}
+
+/**
+ * e1000_power_down_phy_copper_base - Remove link during PHY power down
+ * @hw: pointer to the HW structure
+ *
+ * In the case of a PHY power down to save power, or to turn off link during a
+ * driver unload, or wake on lan is not enabled, remove the link.
+ **/
+void e1000_power_down_phy_copper_base(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+
+	if (!(phy->ops.check_reset_block))
+		return;
+
+	/* If the management interface is not enabled, then power down */
+	if (phy->ops.check_reset_block(hw))
+		e1000_power_down_phy_copper(hw);
+}
+
+/**
+ *  e1000_rx_fifo_flush_base - Clean Rx FIFO after Rx enable
+ *  @hw: pointer to the HW structure
+ *
+ *  After Rx enable, if manageability is enabled then there is likely some
+ *  bad data at the start of the FIFO and possibly in the DMA FIFO.  This
+ *  function clears the FIFOs and flushes any packets that came in as Rx was
+ *  being enabled.
+ **/
+void e1000_rx_fifo_flush_base(struct e1000_hw *hw)
+{
+	u32 rctl, rlpml, rxdctl[4], rfctl, temp_rctl, rx_enabled;
+	int i, ms_wait;
+
+	DEBUGFUNC("e1000_rx_fifo_flush_base");
+
+	/* disable IPv6 options as per hardware errata */
+	rfctl = E1000_READ_REG(hw, E1000_RFCTL);
+	rfctl |= E1000_RFCTL_IPV6_EX_DIS;
+	E1000_WRITE_REG(hw, E1000_RFCTL, rfctl);
+
+	if (!(E1000_READ_REG(hw, E1000_MANC) & E1000_MANC_RCV_TCO_EN))
+		return;
+
+	/* Disable all Rx queues */
+	for (i = 0; i < 4; i++) {
+		rxdctl[i] = E1000_READ_REG(hw, E1000_RXDCTL(i));
+		E1000_WRITE_REG(hw, E1000_RXDCTL(i),
+				rxdctl[i] & ~E1000_RXDCTL_QUEUE_ENABLE);
+	}
+	/* Poll all queues to verify they have shut down */
+	for (ms_wait = 0; ms_wait < 10; ms_wait++) {
+		msec_delay(1);
+		rx_enabled = 0;
+		for (i = 0; i < 4; i++)
+			rx_enabled |= E1000_READ_REG(hw, E1000_RXDCTL(i));
+		if (!(rx_enabled & E1000_RXDCTL_QUEUE_ENABLE))
+			break;
+	}
+
+	if (ms_wait == 10)
+		DEBUGOUT("Queue disable timed out after 10ms\n");
+
+	/* Clear RLPML, RCTL.SBP, RFCTL.LEF, and set RCTL.LPE so that all
+	 * incoming packets are rejected.  Set enable and wait 2ms so that
+	 * any packet that was coming in as RCTL.EN was set is flushed
+	 */
+	E1000_WRITE_REG(hw, E1000_RFCTL, rfctl & ~E1000_RFCTL_LEF);
+
+	rlpml = E1000_READ_REG(hw, E1000_RLPML);
+	E1000_WRITE_REG(hw, E1000_RLPML, 0);
+
+	rctl = E1000_READ_REG(hw, E1000_RCTL);
+	temp_rctl = rctl & ~(E1000_RCTL_EN | E1000_RCTL_SBP);
+	temp_rctl |= E1000_RCTL_LPE;
+
+	E1000_WRITE_REG(hw, E1000_RCTL, temp_rctl);
+	E1000_WRITE_REG(hw, E1000_RCTL, temp_rctl | E1000_RCTL_EN);
+	E1000_WRITE_FLUSH(hw);
+	msec_delay(2);
+
+	/* Enable Rx queues that were previously enabled and restore our
+	 * previous state
+	 */
+	for (i = 0; i < 4; i++)
+		E1000_WRITE_REG(hw, E1000_RXDCTL(i), rxdctl[i]);
+	E1000_WRITE_REG(hw, E1000_RCTL, rctl);
+	E1000_WRITE_FLUSH(hw);
+
+	E1000_WRITE_REG(hw, E1000_RLPML, rlpml);
+	E1000_WRITE_REG(hw, E1000_RFCTL, rfctl);
+
+	/* Flush receive errors generated by workaround */
+	E1000_READ_REG(hw, E1000_ROC);
+	E1000_READ_REG(hw, E1000_RNBC);
+	E1000_READ_REG(hw, E1000_MPC);
+}
diff --git a/sys/dev/e1000/e1000_base.h b/sys/dev/e1000/e1000_base.h
new file mode 100644
index 000000000000..dca16cd3cfcc
--- /dev/null
+++ b/sys/dev/e1000/e1000_base.h
@@ -0,0 +1,158 @@
+/******************************************************************************
+  SPDX-License-Identifier: BSD-3-Clause
+
+  Copyright (c) 2001-2020, 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.
+
+******************************************************************************/
+/*$FreeBSD$*/
+
+#ifndef _E1000_BASE_H_
+#define _E1000_BASE_H_
+
+/* forward declaration */
+s32 e1000_init_hw_base(struct e1000_hw *hw);
+void e1000_power_down_phy_copper_base(struct e1000_hw *hw);
+extern void e1000_rx_fifo_flush_base(struct e1000_hw *hw);
+s32 e1000_acquire_phy_base(struct e1000_hw *hw);
+void e1000_release_phy_base(struct e1000_hw *hw);
+
+/* Transmit Descriptor - Advanced */
+union e1000_adv_tx_desc {
+	struct {
+		__le64 buffer_addr;    /* Address of descriptor's data buf */
+		__le32 cmd_type_len;
+		__le32 olinfo_status;
+	} read;
+	struct {
+		__le64 rsvd;       /* Reserved */
+		__le32 nxtseq_seed;
+		__le32 status;
+	} wb;
+};
+
+/* Context descriptors */
+struct e1000_adv_tx_context_desc {
+	__le32 vlan_macip_lens;
+	union {
+		__le32 launch_time;
+		__le32 seqnum_seed;
+	} u;
+	__le32 type_tucmd_mlhl;
+	__le32 mss_l4len_idx;
+};
+
+/* Adv Transmit Descriptor Config Masks */
+#define E1000_ADVTXD_DTYP_CTXT	0x00200000 /* Advanced Context Descriptor */
+#define E1000_ADVTXD_DTYP_DATA	0x00300000 /* Advanced Data Descriptor */
+#define E1000_ADVTXD_DCMD_EOP	0x01000000 /* End of Packet */
+#define E1000_ADVTXD_DCMD_IFCS	0x02000000 /* Insert FCS (Ethernet CRC) */
+#define E1000_ADVTXD_DCMD_RS	0x08000000 /* Report Status */
+#define E1000_ADVTXD_DCMD_DDTYP_ISCSI	0x10000000 /* DDP hdr type or iSCSI */
+#define E1000_ADVTXD_DCMD_DEXT	0x20000000 /* Descriptor extension (1=Adv) */
+#define E1000_ADVTXD_DCMD_VLE	0x40000000 /* VLAN pkt enable */
+#define E1000_ADVTXD_DCMD_TSE	0x80000000 /* TCP Seg enable */
+#define E1000_ADVTXD_MAC_LINKSEC	0x00040000 /* Apply LinkSec on pkt */
+#define E1000_ADVTXD_MAC_TSTAMP		0x00080000 /* IEEE1588 Timestamp pkt */
+#define E1000_ADVTXD_STAT_SN_CRC	0x00000002 /* NXTSEQ/SEED prsnt in WB */
+#define E1000_ADVTXD_IDX_SHIFT		4  /* Adv desc Index shift */
+#define E1000_ADVTXD_POPTS_ISCO_1ST	0x00000000 /* 1st TSO of iSCSI PDU */
+#define E1000_ADVTXD_POPTS_ISCO_MDL	0x00000800 /* Middle TSO of iSCSI PDU */
+#define E1000_ADVTXD_POPTS_ISCO_LAST	0x00001000 /* Last TSO of iSCSI PDU */
+/* 1st & Last TSO-full iSCSI PDU*/
+#define E1000_ADVTXD_POPTS_ISCO_FULL	0x00001800
+#define E1000_ADVTXD_POPTS_IPSEC	0x00000400 /* IPSec offload request */
+#define E1000_ADVTXD_PAYLEN_SHIFT	14 /* Adv desc PAYLEN shift */
+
+/* Advanced Transmit Context Descriptor Config */
+#define E1000_ADVTXD_MACLEN_SHIFT	9  /* Adv ctxt desc mac len shift */
+#define E1000_ADVTXD_VLAN_SHIFT		16  /* Adv ctxt vlan tag shift */
+#define E1000_ADVTXD_TUCMD_IPV4		0x00000400  /* IP Packet Type: 1=IPv4 */
+#define E1000_ADVTXD_TUCMD_IPV6		0x00000000  /* IP Packet Type: 0=IPv6 */
+#define E1000_ADVTXD_TUCMD_L4T_UDP	0x00000000  /* L4 Packet TYPE of UDP */
+#define E1000_ADVTXD_TUCMD_L4T_TCP	0x00000800  /* L4 Packet TYPE of TCP */
+#define E1000_ADVTXD_TUCMD_L4T_SCTP	0x00001000  /* L4 Packet TYPE of SCTP */
+#define E1000_ADVTXD_TUCMD_IPSEC_TYPE_ESP	0x00002000 /* IPSec Type ESP */
+/* IPSec Encrypt Enable for ESP */
+#define E1000_ADVTXD_TUCMD_IPSEC_ENCRYPT_EN	0x00004000
+/* Req requires Markers and CRC */
+#define E1000_ADVTXD_TUCMD_MKRREQ	0x00002000
+#define E1000_ADVTXD_L4LEN_SHIFT	8  /* Adv ctxt L4LEN shift */
+#define E1000_ADVTXD_MSS_SHIFT		16  /* Adv ctxt MSS shift */
+/* Adv ctxt IPSec SA IDX mask */
+#define E1000_ADVTXD_IPSEC_SA_INDEX_MASK	0x000000FF
+/* Adv ctxt IPSec ESP len mask */
+#define E1000_ADVTXD_IPSEC_ESP_LEN_MASK		0x000000FF
+
+#define E1000_RAR_ENTRIES_BASE		16
+
+/* Receive Descriptor - Advanced */
+union e1000_adv_rx_desc {
+	struct {
+		__le64 pkt_addr; /* Packet buffer address */
+		__le64 hdr_addr; /* Header buffer address */
+	} read;
+	struct {
+		struct {
+			union {
+				__le32 data;
+				struct {
+					__le16 pkt_info; /*RSS type, Pkt type*/
+					/* Split Header, header buffer len */
+					__le16 hdr_info;
+				} hs_rss;
+			} lo_dword;
+			union {
+				__le32 rss; /* RSS Hash */
+				struct {
+					__le16 ip_id; /* IP id */
+					__le16 csum; /* Packet Checksum */
+				} csum_ip;
+			} hi_dword;
+		} lower;
+		struct {
+			__le32 status_error; /* ext status/error */
+			__le16 length; /* Packet length */
+			__le16 vlan; /* VLAN tag */
+		} upper;
+	} wb;  /* writeback */
+};
+
+/* Additional Transmit Descriptor Control definitions */
+#define E1000_TXDCTL_QUEUE_ENABLE	0x02000000 /* Ena specific Tx Queue */
+
+/* Additional Receive Descriptor Control definitions */
+#define E1000_RXDCTL_QUEUE_ENABLE	0x02000000 /* Ena specific Rx Queue */
+
+/* SRRCTL bit definitions */
+#define E1000_SRRCTL_BSIZEPKT_SHIFT		10 /* Shift _right_ */
+#define E1000_SRRCTL_BSIZEHDRSIZE_SHIFT		2  /* Shift _left_ */
+#define E1000_SRRCTL_DESCTYPE_ADV_ONEBUF	0x02000000
+
+#endif /* _E1000_BASE_H_ */
diff --git a/sys/dev/e1000/e1000_defines.h b/sys/dev/e1000/e1000_defines.h
index ecf68dd0341d..4bd575a81671 100644
--- a/sys/dev/e1000/e1000_defines.h
+++ b/sys/dev/e1000/e1000_defines.h
@@ -281,6 +281,7 @@
 #define E1000_CTRL_SWDPIO0	0x00400000 /* SWDPIN 0 Input or output */
 #define E1000_CTRL_SWDPIO2	0x01000000 /* SWDPIN 2 input or output */
 #define E1000_CTRL_SWDPIO3	0x02000000 /* SWDPIN 3 input or output */
+#define E1000_CTRL_DEV_RST	0x20000000 /* Device reset */
 #define E1000_CTRL_RST		0x04000000 /* Global reset */
 #define E1000_CTRL_RFCE		0x08000000 /* Receive Flow Control enable */
 #define E1000_CTRL_TFCE		0x10000000 /* Transmit flow control enable */
@@ -445,8 +446,8 @@
 #define E1000_RFCTL_LEF			0x00040000
 
 /* Collision related configuration parameters */
-#define E1000_COLLISION_THRESHOLD	15
 #define E1000_CT_SHIFT			4
+#define E1000_COLLISION_THRESHOLD	15
 #define E1000_COLLISION_DISTANCE	63
 #define E1000_COLD_SHIFT		12
 
@@ -804,6 +805,17 @@
 #define E1000_TIMINCA_INCPERIOD_SHIFT	24
 #define E1000_TIMINCA_INCVALUE_MASK	0x00FFFFFF
 
+/* ETQF register bit definitions */
+#define E1000_ETQF_1588			(1 << 30)
+#define E1000_FTQF_VF_BP		0x00008000
+#define E1000_FTQF_1588_TIME_STAMP	0x08000000
+#define E1000_FTQF_MASK			0xF0000000
+#define E1000_FTQF_MASK_PROTO_BP	0x10000000
+/* Immediate Interrupt Rx (A.K.A. Low Latency Interrupt) */
+#define E1000_IMIREXT_CTRL_BP	0x00080000  /* Bypass check of ctrl bits */
+#define E1000_IMIREXT_SIZE_BP	0x00001000  /* Packet size bypass */
+
+#define E1000_RXDADV_STAT_TSIP		0x08000 /* timestamp in packet */
 #define E1000_TSICR_TXTS		0x00000002
 #define E1000_TSIM_TXTS			0x00000002
 /* TUPLE Filtering Configuration */
diff --git a/sys/dev/e1000/e1000_hw.h b/sys/dev/e1000/e1000_hw.h
index 95973e29dbf0..59e51e5c322f 100644
--- a/sys/dev/e1000/e1000_hw.h
+++ b/sys/dev/e1000/e1000_hw.h
@@ -1059,6 +1059,7 @@ struct e1000_hw {
 #include "e1000_ich8lan.h"
 #include "e1000_82575.h"
 #include "e1000_i210.h"
+#include "e1000_base.h"
 
 /* These functions must be implemented by drivers */
 void e1000_pci_clear_mwi(struct e1000_hw *hw);
diff --git a/sys/dev/e1000/e1000_i210.c b/sys/dev/e1000/e1000_i210.c
index c6ca38f0f917..0bdad37e56d3 100644
--- a/sys/dev/e1000/e1000_i210.c
+++ b/sys/dev/e1000/e1000_i210.c
@@ -716,6 +716,6 @@ s32 e1000_init_hw_i210(struct e1000_hw *hw)
 	/* Initialize identification LED */
 	mac->ops.id_led_init(hw);
 
-	ret_val = e1000_init_hw_82575(hw);
+	ret_val = e1000_init_hw_base(hw);
 	return ret_val;
 }
diff --git a/sys/dev/e1000/e1000_regs.h b/sys/dev/e1000/e1000_regs.h
index b3ced9c39505..2b7696ddea62 100644
--- a/sys/dev/e1000/e1000_regs.h
+++ b/sys/dev/e1000/e1000_regs.h
@@ -167,7 +167,8 @@
 #define E1000_RADV	0x0282C  /* Rx Interrupt Absolute Delay Timer - RW */
 #define E1000_EMIADD	0x10     /* Extended Memory Indirect Address */
 #define E1000_EMIDATA	0x11     /* Extended Memory Indirect Data */
-#define E1000_SRWR		0x12018  /* Shadow Ram Write Register - RW */
+/* Shadow Ram Write Register - RW */
+#define E1000_SRWR		0x12018
 #define E1000_I210_FLMNGCTL	0x12038
 #define E1000_I210_FLMNGDATA	0x1203C
 #define E1000_I210_FLMNGCNT	0x12040
@@ -312,6 +313,7 @@
 #define E1000_TIDV	0x03820  /* Tx Interrupt Delay Value - RW */
 #define E1000_TADV	0x0382C  /* Tx Interrupt Absolute Delay Val - RW */
 #define E1000_TSPMT	0x03830  /* TCP Segmentation PAD & Min Threshold - RW */
+/* Statistics Register Descriptions */
 #define E1000_CRCERRS	0x04000  /* CRC Error Count - R/clr */
 #define E1000_ALGNERRC	0x04004  /* Alignment Error Count - R/clr */
 #define E1000_SYMERRS	0x04008  /* Symbol Error Count - R/clr */
@@ -513,17 +515,20 @@
 #define E1000_MANC2H		0x05860 /* Management Control To Host - RW */
 /* Management Decision Filters */
 #define E1000_MDEF(_n)		(0x05890 + (4 * (_n)))
+/* Semaphore registers */
 #define E1000_SW_FW_SYNC	0x05B5C /* SW-FW Synchronization - RW */
 #define E1000_CCMCTL	0x05B48 /* CCM Control Register */
 #define E1000_GIOCTL	0x05B44 /* GIO Analog Control Register */
 #define E1000_SCCTL	0x05B4C /* PCIc PLL Configuration Register */
+/* PCIe Register Description */
 #define E1000_GCR	0x05B00 /* PCI-Ex Control */
 #define E1000_GCR2	0x05B64 /* PCI-Ex Control #2 */
 #define E1000_GSCL_1	0x05B10 /* PCI-Ex Statistic Control #1 */
 #define E1000_GSCL_2	0x05B14 /* PCI-Ex Statistic Control #2 */
 #define E1000_GSCL_3	0x05B18 /* PCI-Ex Statistic Control #3 */
 #define E1000_GSCL_4	0x05B1C /* PCI-Ex Statistic Control #4 */
-#define E1000_FACTPS	0x05B30 /* Function Active and Power State to MNG */
+/* Function Active and Power State to MNG */
+#define E1000_FACTPS	0x05B30
 #define E1000_SWSM	0x05B50 /* SW Semaphore */
 #define E1000_FWSM	0x05B54 /* FW Semaphore */
 /* Driver-only SW semaphore (not used by BOOT agents) */
@@ -542,8 +547,10 @@
 #define E1000_IMIREXT(_i)	(0x05AA0 + ((_i) * 4)) /* Immediate INTR Ext*/
 #define E1000_IMIRVP		0x05AC0 /* Immediate INT Rx VLAN Priority -RW */
 #define E1000_MSIXBM(_i)	(0x01600 + ((_i) * 4)) /* MSI-X Alloc Reg -RW */
-#define E1000_RETA(_i)	(0x05C00 + ((_i) * 4)) /* Redirection Table - RW */
-#define E1000_RSSRK(_i)	(0x05C80 + ((_i) * 4)) /* RSS Random Key - RW */
+/* Redirection Table - RW Array */
+#define E1000_RETA(_i)	(0x05C00 + ((_i) * 4))
+/* RSS Random Key - RW Array */
+#define E1000_RSSRK(_i)	(0x05C80 + ((_i) * 4))
 #define E1000_RSSIM	0x05864 /* RSS Interrupt Mask */
 #define E1000_RSSIR	0x05868 /* RSS Interrupt Request */
 /* VT Registers */
@@ -613,6 +620,14 @@
 #define E1000_SYNQF(_n)	(0x055FC + (4 * (_n))) /* SYN Packet Queue Fltr */
 #define E1000_ETQF(_n)	(0x05CB0 + (4 * (_n))) /* EType Queue Fltr */
 
+/* ETQF register bit definitions */
+#define E1000_ETQF_FILTER_ENABLE	(1 << 26)
+#define E1000_ETQF_IMM_INT		(1 << 29)
+#define E1000_ETQF_QUEUE_ENABLE		(1 << 31)
+#define E1000_ETQF_QUEUE_SHIFT		16
+#define E1000_ETQF_QUEUE_MASK		0x00070000
+#define E1000_ETQF_ETYPE_MASK		0x0000FFFF
+
 #define E1000_RTTDCS	0x3600 /* Reedtown Tx Desc plane control and status */
 #define E1000_RTTPCS	0x3474 /* Reedtown Tx Packet Plane control and status */
 #define E1000_RTRPCS	0x2474 /* Rx packet plane control and status */
diff --git a/sys/dev/e1000/if_em.c b/sys/dev/e1000/if_em.c
index f09e8dd79b0c..5b7437fc5a58 100644
--- a/sys/dev/e1000/if_em.c
+++ b/sys/dev/e1000/if_em.c
@@ -1324,7 +1324,7 @@ em_if_init(if_ctx_t ctx)
 
 	/* Clear bad data from Rx FIFOs */
 	if (adapter->hw.mac.type >= igb_mac_min)
-		e1000_rx_fifo_flush_82575(&adapter->hw);
+		e1000_rx_fifo_flush_base(&adapter->hw);
 
 	/* Configure for OS presence */
 	em_init_manageability(adapter);
diff --git a/sys/dev/e1000/igb_txrx.c b/sys/dev/e1000/igb_txrx.c
index 2252270fa5ea..f7c55137d1f8 100644
--- a/sys/dev/e1000/igb_txrx.c
+++ b/sys/dev/e1000/igb_txrx.c
@@ -136,7 +136,7 @@ igb_tso_setup(struct tx_ring *txr, if_pkt_info_t pi, uint32_t *cmd_type_len,
 		mss_l4len_idx |= txr->me << 4;
 	TXD->mss_l4len_idx = htole32(mss_l4len_idx);
 
-	TXD->seqnum_seed = htole32(0);
+	TXD->u.seqnum_seed = htole32(0);
 	*cmd_type_len |= E1000_ADVTXD_DCMD_TSE;
 	*olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
 	*olinfo_status |= paylen << E1000_ADVTXD_PAYLEN_SHIFT;
@@ -227,7 +227,7 @@ igb_tx_ctx_setup(struct tx_ring *txr, if_pkt_info_t pi, uint32_t *cmd_type_len,
 	/* Now copy bits into descriptor */
 	TXD->vlan_macip_lens = htole32(vlan_macip_lens);
 	TXD->type_tucmd_mlhl = htole32(type_tucmd_mlhl);
-	TXD->seqnum_seed = htole32(0);
+	TXD->u.seqnum_seed = htole32(0);
 	TXD->mss_l4len_idx = htole32(mss_l4len_idx);
 
 	return (1);
diff --git a/sys/modules/em/Makefile b/sys/modules/em/Makefile
index 92aa093f986c..d22d5a2fd7b7 100644
--- a/sys/modules/em/Makefile
+++ b/sys/modules/em/Makefile
@@ -9,11 +9,11 @@ SRCS    += $(CORE_SRC) $(LEGACY_SRC)
 SRCS	+= $(COMMON_SHARED) $(LEGACY_SHARED) $(PCIE_SHARED)
 CORE_SRC = if_em.c em_txrx.c e1000_osdep.c
 CORE_SRC += igb_txrx.c
-# This is the Legacy, pre-PCIE source, it can be
-# undefined when using modular driver if not needed
-COMMON_SHARED = e1000_api.c e1000_phy.c e1000_nvm.c e1000_mac.c \
+COMMON_SHARED = e1000_api.c e1000_base.c e1000_phy.c e1000_nvm.c e1000_mac.c \
 		e1000_manage.c e1000_vf.c e1000_mbx.c e1000_i210.c
 PCIE_SHARED = e1000_80003es2lan.c e1000_ich8lan.c e1000_82571.c e1000_82575.c
+# This is the Legacy, pre-PCIE source, it can be
+# undefined when using modular driver if not needed
 LEGACY_SHARED = e1000_82540.c e1000_82542.c e1000_82541.c e1000_82543.c