X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=drivers%2Fnet%2Fe1000%2Fbase%2Fe1000_vf.c;fp=drivers%2Fnet%2Fe1000%2Fbase%2Fe1000_vf.c;h=7845b48e75a60678b767cc36eb2d91d1168fd480;hb=97f17497d162afdb82c8704bf097f0fee3724b2e;hp=0000000000000000000000000000000000000000;hpb=e04be89c2409570e0055b2cda60bd11395bb93b0;p=deb_dpdk.git

diff --git a/drivers/net/e1000/base/e1000_vf.c b/drivers/net/e1000/base/e1000_vf.c
new file mode 100644
index 00000000..7845b48e
--- /dev/null
+++ b/drivers/net/e1000/base/e1000_vf.c
@@ -0,0 +1,588 @@
+/*******************************************************************************
+
+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 "e1000_api.h"
+
+
+STATIC s32 e1000_init_phy_params_vf(struct e1000_hw *hw);
+STATIC s32 e1000_init_nvm_params_vf(struct e1000_hw *hw);
+STATIC void e1000_release_vf(struct e1000_hw *hw);
+STATIC s32 e1000_acquire_vf(struct e1000_hw *hw);
+STATIC s32 e1000_setup_link_vf(struct e1000_hw *hw);
+STATIC s32 e1000_get_bus_info_pcie_vf(struct e1000_hw *hw);
+STATIC s32 e1000_init_mac_params_vf(struct e1000_hw *hw);
+STATIC s32 e1000_check_for_link_vf(struct e1000_hw *hw);
+STATIC s32 e1000_get_link_up_info_vf(struct e1000_hw *hw, u16 *speed,
+				     u16 *duplex);
+STATIC s32 e1000_init_hw_vf(struct e1000_hw *hw);
+STATIC s32 e1000_reset_hw_vf(struct e1000_hw *hw);
+STATIC void e1000_update_mc_addr_list_vf(struct e1000_hw *hw, u8 *, u32);
+STATIC int  e1000_rar_set_vf(struct e1000_hw *, u8 *, u32);
+STATIC s32 e1000_read_mac_addr_vf(struct e1000_hw *);
+
+/**
+ *  e1000_init_phy_params_vf - Inits PHY params
+ *  @hw: pointer to the HW structure
+ *
+ *  Doesn't do much - there's no PHY available to the VF.
+ **/
+STATIC s32 e1000_init_phy_params_vf(struct e1000_hw *hw)
+{
+	DEBUGFUNC("e1000_init_phy_params_vf");
+	hw->phy.type = e1000_phy_vf;
+	hw->phy.ops.acquire = e1000_acquire_vf;
+	hw->phy.ops.release = e1000_release_vf;
+
+	return E1000_SUCCESS;
+}
+
+/**
+ *  e1000_init_nvm_params_vf - Inits NVM params
+ *  @hw: pointer to the HW structure
+ *
+ *  Doesn't do much - there's no NVM available to the VF.
+ **/
+STATIC s32 e1000_init_nvm_params_vf(struct e1000_hw *hw)
+{
+	DEBUGFUNC("e1000_init_nvm_params_vf");
+	hw->nvm.type = e1000_nvm_none;
+	hw->nvm.ops.acquire = e1000_acquire_vf;
+	hw->nvm.ops.release = e1000_release_vf;
+
+	return E1000_SUCCESS;
+}
+
+/**
+ *  e1000_init_mac_params_vf - Inits MAC params
+ *  @hw: pointer to the HW structure
+ **/
+STATIC s32 e1000_init_mac_params_vf(struct e1000_hw *hw)
+{
+	struct e1000_mac_info *mac = &hw->mac;
+
+	DEBUGFUNC("e1000_init_mac_params_vf");
+
+	/* Set media type */
+	/*
+	 * Virtual functions don't care what they're media type is as they
+	 * have no direct access to the PHY, or the media.  That is handled
+	 * by the physical function driver.
+	 */
+	hw->phy.media_type = e1000_media_type_unknown;
+
+	/* No ASF features for the VF driver */
+	mac->asf_firmware_present = false;
+	/* ARC subsystem not supported */
+	mac->arc_subsystem_valid = false;
+	/* Disable adaptive IFS mode so the generic funcs don't do anything */
+	mac->adaptive_ifs = false;
+	/* VF's have no MTA Registers - PF feature only */
+	mac->mta_reg_count = 128;
+	/* VF's have no access to RAR entries  */
+	mac->rar_entry_count = 1;
+
+	/* Function pointers */
+	/* link setup */
+	mac->ops.setup_link = e1000_setup_link_vf;
+	/* bus type/speed/width */
+	mac->ops.get_bus_info = e1000_get_bus_info_pcie_vf;
+	/* reset */
+	mac->ops.reset_hw = e1000_reset_hw_vf;
+	/* hw initialization */
+	mac->ops.init_hw = e1000_init_hw_vf;
+	/* check for link */
+	mac->ops.check_for_link = e1000_check_for_link_vf;
+	/* link info */
+	mac->ops.get_link_up_info = e1000_get_link_up_info_vf;
+	/* multicast address update */
+	mac->ops.update_mc_addr_list = e1000_update_mc_addr_list_vf;
+	/* set mac address */
+	mac->ops.rar_set = e1000_rar_set_vf;
+	/* read mac address */
+	mac->ops.read_mac_addr = e1000_read_mac_addr_vf;
+
+
+	return E1000_SUCCESS;
+}
+
+/**
+ *  e1000_init_function_pointers_vf - Inits function pointers
+ *  @hw: pointer to the HW structure
+ **/
+void e1000_init_function_pointers_vf(struct e1000_hw *hw)
+{
+	DEBUGFUNC("e1000_init_function_pointers_vf");
+
+	hw->mac.ops.init_params = e1000_init_mac_params_vf;
+	hw->nvm.ops.init_params = e1000_init_nvm_params_vf;
+	hw->phy.ops.init_params = e1000_init_phy_params_vf;
+	hw->mbx.ops.init_params = e1000_init_mbx_params_vf;
+}
+
+/**
+ *  e1000_acquire_vf - Acquire rights to access PHY or NVM.
+ *  @hw: pointer to the HW structure
+ *
+ *  There is no PHY or NVM so we want all attempts to acquire these to fail.
+ *  In addition, the MAC registers to access PHY/NVM don't exist so we don't
+ *  even want any SW to attempt to use them.
+ **/
+STATIC s32 e1000_acquire_vf(struct e1000_hw E1000_UNUSEDARG *hw)
+{
+	UNREFERENCED_1PARAMETER(hw);
+	return -E1000_ERR_PHY;
+}
+
+/**
+ *  e1000_release_vf - Release PHY or NVM
+ *  @hw: pointer to the HW structure
+ *
+ *  There is no PHY or NVM so we want all attempts to acquire these to fail.
+ *  In addition, the MAC registers to access PHY/NVM don't exist so we don't
+ *  even want any SW to attempt to use them.
+ **/
+STATIC void e1000_release_vf(struct e1000_hw E1000_UNUSEDARG *hw)
+{
+	UNREFERENCED_1PARAMETER(hw);
+	return;
+}
+
+/**
+ *  e1000_setup_link_vf - Sets up link.
+ *  @hw: pointer to the HW structure
+ *
+ *  Virtual functions cannot change link.
+ **/
+STATIC s32 e1000_setup_link_vf(struct e1000_hw E1000_UNUSEDARG *hw)
+{
+	DEBUGFUNC("e1000_setup_link_vf");
+	UNREFERENCED_1PARAMETER(hw);
+
+	return E1000_SUCCESS;
+}
+
+/**
+ *  e1000_get_bus_info_pcie_vf - Gets the bus info.
+ *  @hw: pointer to the HW structure
+ *
+ *  Virtual functions are not really on their own bus.
+ **/
+STATIC s32 e1000_get_bus_info_pcie_vf(struct e1000_hw *hw)
+{
+	struct e1000_bus_info *bus = &hw->bus;
+
+	DEBUGFUNC("e1000_get_bus_info_pcie_vf");
+
+	/* Do not set type PCI-E because we don't want disable master to run */
+	bus->type = e1000_bus_type_reserved;
+	bus->speed = e1000_bus_speed_2500;
+
+	return 0;
+}
+
+/**
+ *  e1000_get_link_up_info_vf - Gets link info.
+ *  @hw: pointer to the HW structure
+ *  @speed: pointer to 16 bit value to store link speed.
+ *  @duplex: pointer to 16 bit value to store duplex.
+ *
+ *  Since we cannot read the PHY and get accurate link info, we must rely upon
+ *  the status register's data which is often stale and inaccurate.
+ **/
+STATIC s32 e1000_get_link_up_info_vf(struct e1000_hw *hw, u16 *speed,
+				     u16 *duplex)
+{
+	s32 status;
+
+	DEBUGFUNC("e1000_get_link_up_info_vf");
+
+	status = E1000_READ_REG(hw, E1000_STATUS);
+	if (status & E1000_STATUS_SPEED_1000) {
+		*speed = SPEED_1000;
+		DEBUGOUT("1000 Mbs, ");
+	} else if (status & E1000_STATUS_SPEED_100) {
+		*speed = SPEED_100;
+		DEBUGOUT("100 Mbs, ");
+	} else {
+		*speed = SPEED_10;
+		DEBUGOUT("10 Mbs, ");
+	}
+
+	if (status & E1000_STATUS_FD) {
+		*duplex = FULL_DUPLEX;
+		DEBUGOUT("Full Duplex\n");
+	} else {
+		*duplex = HALF_DUPLEX;
+		DEBUGOUT("Half Duplex\n");
+	}
+
+	return E1000_SUCCESS;
+}
+
+/**
+ *  e1000_reset_hw_vf - Resets the HW
+ *  @hw: pointer to the HW structure
+ *
+ *  VF's provide a function level reset. This is done using bit 26 of ctrl_reg.
+ *  This is all the reset we can perform on a VF.
+ **/
+STATIC s32 e1000_reset_hw_vf(struct e1000_hw *hw)
+{
+	struct e1000_mbx_info *mbx = &hw->mbx;
+	u32 timeout = E1000_VF_INIT_TIMEOUT;
+	s32 ret_val = -E1000_ERR_MAC_INIT;
+	u32 ctrl, msgbuf[3];
+	u8 *addr = (u8 *)(&msgbuf[1]);
+
+	DEBUGFUNC("e1000_reset_hw_vf");
+
+	DEBUGOUT("Issuing a function level reset to MAC\n");
+	ctrl = E1000_READ_REG(hw, E1000_CTRL);
+	E1000_WRITE_REG(hw, E1000_CTRL, ctrl | E1000_CTRL_RST);
+
+	/* we cannot reset while the RSTI / RSTD bits are asserted */
+	while (!mbx->ops.check_for_rst(hw, 0) && timeout) {
+		timeout--;
+		usec_delay(5);
+	}
+
+	if (timeout) {
+		/* mailbox timeout can now become active */
+		mbx->timeout = E1000_VF_MBX_INIT_TIMEOUT;
+
+		msgbuf[0] = E1000_VF_RESET;
+		mbx->ops.write_posted(hw, msgbuf, 1, 0);
+
+		msec_delay(10);
+
+		/* set our "perm_addr" based on info provided by PF */
+		ret_val = mbx->ops.read_posted(hw, msgbuf, 3, 0);
+		if (!ret_val) {
+			if (msgbuf[0] == (E1000_VF_RESET |
+			    E1000_VT_MSGTYPE_ACK))
+				memcpy(hw->mac.perm_addr, addr, 6);
+			else
+				ret_val = -E1000_ERR_MAC_INIT;
+		}
+	}
+
+	return ret_val;
+}
+
+/**
+ *  e1000_init_hw_vf - Inits the HW
+ *  @hw: pointer to the HW structure
+ *
+ *  Not much to do here except clear the PF Reset indication if there is one.
+ **/
+STATIC s32 e1000_init_hw_vf(struct e1000_hw *hw)
+{
+	DEBUGFUNC("e1000_init_hw_vf");
+
+	/* attempt to set and restore our mac address */
+	e1000_rar_set_vf(hw, hw->mac.addr, 0);
+
+	return E1000_SUCCESS;
+}
+
+/**
+ *  e1000_rar_set_vf - set device MAC address
+ *  @hw: pointer to the HW structure
+ *  @addr: pointer to the receive address
+ *  @index receive address array register
+ **/
+STATIC int e1000_rar_set_vf(struct e1000_hw *hw, u8 *addr,
+			     u32 E1000_UNUSEDARG index)
+{
+	struct e1000_mbx_info *mbx = &hw->mbx;
+	u32 msgbuf[3];
+	u8 *msg_addr = (u8 *)(&msgbuf[1]);
+	s32 ret_val;
+
+	UNREFERENCED_1PARAMETER(index);
+	memset(msgbuf, 0, 12);
+	msgbuf[0] = E1000_VF_SET_MAC_ADDR;
+	memcpy(msg_addr, addr, 6);
+	ret_val = mbx->ops.write_posted(hw, msgbuf, 3, 0);
+
+	if (!ret_val)
+		ret_val = mbx->ops.read_posted(hw, msgbuf, 3, 0);
+
+	msgbuf[0] &= ~E1000_VT_MSGTYPE_CTS;
+
+	/* if nacked the address was rejected, use "perm_addr" */
+	if (!ret_val &&
+	    (msgbuf[0] == (E1000_VF_SET_MAC_ADDR | E1000_VT_MSGTYPE_NACK)))
+		e1000_read_mac_addr_vf(hw);
+
+	return E1000_SUCCESS;
+}
+
+/**
+ *  e1000_hash_mc_addr_vf - Generate a multicast hash value
+ *  @hw: pointer to the HW structure
+ *  @mc_addr: pointer to a multicast address
+ *
+ *  Generates a multicast address hash value which is used to determine
+ *  the multicast filter table array address and new table value.
+ **/
+STATIC u32 e1000_hash_mc_addr_vf(struct e1000_hw *hw, u8 *mc_addr)
+{
+	u32 hash_value, hash_mask;
+	u8 bit_shift = 0;
+
+	DEBUGFUNC("e1000_hash_mc_addr_generic");
+
+	/* Register count multiplied by bits per register */
+	hash_mask = (hw->mac.mta_reg_count * 32) - 1;
+
+	/*
+	 * The bit_shift is the number of left-shifts
+	 * where 0xFF would still fall within the hash mask.
+	 */
+	while (hash_mask >> bit_shift != 0xFF)
+		bit_shift++;
+
+	hash_value = hash_mask & (((mc_addr[4] >> (8 - bit_shift)) |
+				  (((u16) mc_addr[5]) << bit_shift)));
+
+	return hash_value;
+}
+
+STATIC void e1000_write_msg_read_ack(struct e1000_hw *hw,
+				     u32 *msg, u16 size)
+{
+	struct e1000_mbx_info *mbx = &hw->mbx;
+	u32 retmsg[E1000_VFMAILBOX_SIZE];
+	s32 retval = mbx->ops.write_posted(hw, msg, size, 0);
+
+	if (!retval)
+		mbx->ops.read_posted(hw, retmsg, E1000_VFMAILBOX_SIZE, 0);
+}
+
+/**
+ *  e1000_update_mc_addr_list_vf - Update Multicast addresses
+ *  @hw: pointer to the HW structure
+ *  @mc_addr_list: array of multicast addresses to program
+ *  @mc_addr_count: number of multicast addresses to program
+ *
+ *  Updates the Multicast Table Array.
+ *  The caller must have a packed mc_addr_list of multicast addresses.
+ **/
+void e1000_update_mc_addr_list_vf(struct e1000_hw *hw,
+				  u8 *mc_addr_list, u32 mc_addr_count)
+{
+	u32 msgbuf[E1000_VFMAILBOX_SIZE];
+	u16 *hash_list = (u16 *)&msgbuf[1];
+	u32 hash_value;
+	u32 i;
+
+	DEBUGFUNC("e1000_update_mc_addr_list_vf");
+
+	/* Each entry in the list uses 1 16 bit word.  We have 30
+	 * 16 bit words available in our HW msg buffer (minus 1 for the
+	 * msg type).  That's 30 hash values if we pack 'em right.  If
+	 * there are more than 30 MC addresses to add then punt the
+	 * extras for now and then add code to handle more than 30 later.
+	 * It would be unusual for a server to request that many multi-cast
+	 * addresses except for in large enterprise network environments.
+	 */
+
+	DEBUGOUT1("MC Addr Count = %d\n", mc_addr_count);
+
+	if (mc_addr_count > 30) {
+		msgbuf[0] |= E1000_VF_SET_MULTICAST_OVERFLOW;
+		mc_addr_count = 30;
+	}
+
+	msgbuf[0] = E1000_VF_SET_MULTICAST;
+	msgbuf[0] |= mc_addr_count << E1000_VT_MSGINFO_SHIFT;
+
+	for (i = 0; i < mc_addr_count; i++) {
+		hash_value = e1000_hash_mc_addr_vf(hw, mc_addr_list);
+		DEBUGOUT1("Hash value = 0x%03X\n", hash_value);
+		hash_list[i] = hash_value & 0x0FFF;
+		mc_addr_list += ETH_ADDR_LEN;
+	}
+
+	e1000_write_msg_read_ack(hw, msgbuf, E1000_VFMAILBOX_SIZE);
+}
+
+/**
+ *  e1000_vfta_set_vf - Set/Unset vlan filter table address
+ *  @hw: pointer to the HW structure
+ *  @vid: determines the vfta register and bit to set/unset
+ *  @set: if true then set bit, else clear bit
+ **/
+void e1000_vfta_set_vf(struct e1000_hw *hw, u16 vid, bool set)
+{
+	u32 msgbuf[2];
+
+	msgbuf[0] = E1000_VF_SET_VLAN;
+	msgbuf[1] = vid;
+	/* Setting the 8 bit field MSG INFO to TRUE indicates "add" */
+	if (set)
+		msgbuf[0] |= E1000_VF_SET_VLAN_ADD;
+
+	e1000_write_msg_read_ack(hw, msgbuf, 2);
+}
+
+/** e1000_rlpml_set_vf - Set the maximum receive packet length
+ *  @hw: pointer to the HW structure
+ *  @max_size: value to assign to max frame size
+ **/
+void e1000_rlpml_set_vf(struct e1000_hw *hw, u16 max_size)
+{
+	u32 msgbuf[2];
+
+	msgbuf[0] = E1000_VF_SET_LPE;
+	msgbuf[1] = max_size;
+
+	e1000_write_msg_read_ack(hw, msgbuf, 2);
+}
+
+/**
+ *  e1000_promisc_set_vf - Set flags for Unicast or Multicast promisc
+ *  @hw: pointer to the HW structure
+ *  @uni: boolean indicating unicast promisc status
+ *  @multi: boolean indicating multicast promisc status
+ **/
+s32 e1000_promisc_set_vf(struct e1000_hw *hw, enum e1000_promisc_type type)
+{
+	struct e1000_mbx_info *mbx = &hw->mbx;
+	u32 msgbuf = E1000_VF_SET_PROMISC;
+	s32 ret_val;
+
+	switch (type) {
+	case e1000_promisc_multicast:
+		msgbuf |= E1000_VF_SET_PROMISC_MULTICAST;
+		break;
+	case e1000_promisc_enabled:
+		msgbuf |= E1000_VF_SET_PROMISC_MULTICAST;
+	case e1000_promisc_unicast:
+		msgbuf |= E1000_VF_SET_PROMISC_UNICAST;
+	case e1000_promisc_disabled:
+		break;
+	default:
+		return -E1000_ERR_MAC_INIT;
+	}
+
+	 ret_val = mbx->ops.write_posted(hw, &msgbuf, 1, 0);
+
+	if (!ret_val)
+		ret_val = mbx->ops.read_posted(hw, &msgbuf, 1, 0);
+
+	if (!ret_val && !(msgbuf & E1000_VT_MSGTYPE_ACK))
+		ret_val = -E1000_ERR_MAC_INIT;
+
+	return ret_val;
+}
+
+/**
+ *  e1000_read_mac_addr_vf - Read device MAC address
+ *  @hw: pointer to the HW structure
+ **/
+STATIC s32 e1000_read_mac_addr_vf(struct e1000_hw *hw)
+{
+	int i;
+
+	for (i = 0; i < ETH_ADDR_LEN; i++)
+		hw->mac.addr[i] = hw->mac.perm_addr[i];
+
+	return E1000_SUCCESS;
+}
+
+/**
+ *  e1000_check_for_link_vf - Check for link for a virtual interface
+ *  @hw: pointer to the HW structure
+ *
+ *  Checks to see if the underlying PF is still talking to the VF and
+ *  if it is then it reports the link state to the hardware, otherwise
+ *  it reports link down and returns an error.
+ **/
+STATIC s32 e1000_check_for_link_vf(struct e1000_hw *hw)
+{
+	struct e1000_mbx_info *mbx = &hw->mbx;
+	struct e1000_mac_info *mac = &hw->mac;
+	s32 ret_val = E1000_SUCCESS;
+	u32 in_msg = 0;
+
+	DEBUGFUNC("e1000_check_for_link_vf");
+
+	/*
+	 * We only want to run this if there has been a rst asserted.
+	 * in this case that could mean a link change, device reset,
+	 * or a virtual function reset
+	 */
+
+	/* If we were hit with a reset or timeout 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 */
+	if (!(E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU))
+		goto out;
+
+	/* if the read failed it could just be a mailbox collision, best wait
+	 * until we are called again and don't report an error */
+	if (mbx->ops.read(hw, &in_msg, 1, 0))
+		goto out;
+
+	/* if incoming message isn't clear to send we are waiting on response */
+	if (!(in_msg & E1000_VT_MSGTYPE_CTS)) {
+		/* message is not CTS and is NACK we have lost CTS status */
+		if (in_msg & E1000_VT_MSGTYPE_NACK)
+			ret_val = -E1000_ERR_MAC_INIT;
+		goto out;
+	}
+
+	/* at this point we know the PF is talking to us, check and see if
+	 * we are still accepting timeout or if we had a timeout failure.
+	 * if we failed then we will need to reinit */
+	if (!mbx->timeout) {
+		ret_val = -E1000_ERR_MAC_INIT;
+		goto out;
+	}
+
+	/* 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:
+	return ret_val;
+}
+