ixgbe: Add SR-IOV specific features
This module and header file add functions to support SR-IOV features of the 82599 10Gbe controller. Signed-off-by: Greg Rose <gregory.v.rose@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Greg Rose
David S. Miller
parent
7f870475c8
commit
17367270b1
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/*******************************************************************************
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Intel 10 Gigabit PCI Express Linux driver
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Copyright(c) 1999 - 2009 Intel Corporation.
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This program is free software; you can redistribute it and/or modify it
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under the terms and conditions of the GNU General Public License,
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version 2, as published by the Free Software Foundation.
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This program is distributed in the hope it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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The full GNU General Public License is included in this distribution in
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the file called "COPYING".
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Contact Information:
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e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*******************************************************************************/
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#include <linux/types.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/netdevice.h>
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#include <linux/vmalloc.h>
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#include <linux/string.h>
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#include <linux/in.h>
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#include <linux/ip.h>
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#include <linux/tcp.h>
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#include <linux/ipv6.h>
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#ifdef NETIF_F_HW_VLAN_TX
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#include <linux/if_vlan.h>
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#endif
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#include "ixgbe.h"
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#include "ixgbe_sriov.h"
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int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
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int entries, u16 *hash_list, u32 vf)
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{
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struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
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int i;
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/* only so many hash values supported */
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entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
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/*
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* salt away the number of multi cast addresses assigned
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* to this VF for later use to restore when the PF multi cast
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* list changes
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*/
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vfinfo->num_vf_mc_hashes = entries;
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/*
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* VFs are limited to using the MTA hash table for their multicast
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* addresses
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*/
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for (i = 0; i < entries; i++) {
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vfinfo->vf_mc_hashes[i] = hash_list[i];;
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}
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/* Flush and reset the mta with the new values */
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ixgbe_set_rx_mode(adapter->netdev);
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return 0;
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}
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void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
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{
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struct ixgbe_hw *hw = &adapter->hw;
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struct vf_data_storage *vfinfo;
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int i, j;
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u32 vector_bit;
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u32 vector_reg;
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u32 mta_reg;
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for (i = 0; i < adapter->num_vfs; i++) {
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vfinfo = &adapter->vfinfo[i];
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for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
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hw->addr_ctrl.mta_in_use++;
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vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
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vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
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mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
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mta_reg |= (1 << vector_bit);
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IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
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}
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}
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}
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int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid, u32 vf)
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{
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u32 ctrl;
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/* Check if global VLAN already set, if not set it */
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ctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_VLNCTRL);
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if (!(ctrl & IXGBE_VLNCTRL_VFE)) {
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/* enable VLAN tag insert/strip */
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ctrl |= IXGBE_VLNCTRL_VFE;
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ctrl &= ~IXGBE_VLNCTRL_CFIEN;
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IXGBE_WRITE_REG(&adapter->hw, IXGBE_VLNCTRL, ctrl);
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}
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return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add);
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}
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void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf)
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{
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u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
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vmolr |= (IXGBE_VMOLR_AUPE |
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IXGBE_VMOLR_ROMPE |
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IXGBE_VMOLR_ROPE |
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IXGBE_VMOLR_BAM);
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IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
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}
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inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
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{
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struct ixgbe_hw *hw = &adapter->hw;
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/* reset offloads to defaults */
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ixgbe_set_vmolr(hw, vf);
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/* reset multicast table array for vf */
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adapter->vfinfo[vf].num_vf_mc_hashes = 0;
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/* Flush and reset the mta with the new values */
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ixgbe_set_rx_mode(adapter->netdev);
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if (adapter->vfinfo[vf].rar > 0) {
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adapter->hw.mac.ops.clear_rar(&adapter->hw,
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adapter->vfinfo[vf].rar);
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adapter->vfinfo[vf].rar = -1;
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}
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}
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int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
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int vf, unsigned char *mac_addr)
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{
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struct ixgbe_hw *hw = &adapter->hw;
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adapter->vfinfo[vf].rar = hw->mac.ops.set_rar(hw, vf + 1, mac_addr,
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vf, IXGBE_RAH_AV);
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if (adapter->vfinfo[vf].rar < 0) {
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DPRINTK(DRV, ERR, "Could not set MAC Filter for VF %d\n", vf);
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return -1;
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}
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memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, 6);
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return 0;
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}
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int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
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{
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unsigned char vf_mac_addr[6];
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struct net_device *netdev = pci_get_drvdata(pdev);
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struct ixgbe_adapter *adapter = netdev_priv(netdev);
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unsigned int vfn = (event_mask & 0x3f);
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bool enable = ((event_mask & 0x10000000U) != 0);
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if (enable) {
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random_ether_addr(vf_mac_addr);
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DPRINTK(PROBE, INFO, "IOV: VF %d is enabled "
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"mac %02X:%02X:%02X:%02X:%02X:%02X\n",
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vfn,
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vf_mac_addr[0], vf_mac_addr[1], vf_mac_addr[2],
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vf_mac_addr[3], vf_mac_addr[4], vf_mac_addr[5]);
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/*
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* Store away the VF "permananet" MAC address, it will ask
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* for it later.
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*/
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memcpy(adapter->vfinfo[vfn].vf_mac_addresses, vf_mac_addr, 6);
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}
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return 0;
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}
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inline void ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
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{
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struct ixgbe_hw *hw = &adapter->hw;
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u32 reg;
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u32 reg_offset, vf_shift;
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vf_shift = vf % 32;
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reg_offset = vf / 32;
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/* enable transmit and receive for vf */
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reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
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reg |= (reg | (1 << vf_shift));
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IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg);
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reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
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reg |= (reg | (1 << vf_shift));
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IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);
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ixgbe_vf_reset_event(adapter, vf);
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}
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static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
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{
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u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
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u32 msgbuf[mbx_size];
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struct ixgbe_hw *hw = &adapter->hw;
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s32 retval;
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int entries;
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u16 *hash_list;
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int add, vid;
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retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
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if (retval)
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printk(KERN_ERR "Error receiving message from VF\n");
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/* this is a message we already processed, do nothing */
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if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
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return retval;
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/*
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* until the vf completes a virtual function reset it should not be
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* allowed to start any configuration.
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*/
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if (msgbuf[0] == IXGBE_VF_RESET) {
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unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
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u8 *addr = (u8 *)(&msgbuf[1]);
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DPRINTK(PROBE, INFO, "VF Reset msg received from vf %d\n", vf);
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adapter->vfinfo[vf].clear_to_send = false;
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ixgbe_vf_reset_msg(adapter, vf);
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adapter->vfinfo[vf].clear_to_send = true;
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/* reply to reset with ack and vf mac address */
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msgbuf[0] = IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK;
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memcpy(addr, vf_mac, IXGBE_ETH_LENGTH_OF_ADDRESS);
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/*
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* Piggyback the multicast filter type so VF can compute the
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* correct vectors
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*/
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msgbuf[3] = hw->mac.mc_filter_type;
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ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
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return retval;
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}
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if (!adapter->vfinfo[vf].clear_to_send) {
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msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
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ixgbe_write_mbx(hw, msgbuf, 1, vf);
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return retval;
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}
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switch ((msgbuf[0] & 0xFFFF)) {
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case IXGBE_VF_SET_MAC_ADDR:
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{
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u8 *new_mac = ((u8 *)(&msgbuf[1]));
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if (is_valid_ether_addr(new_mac))
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ixgbe_set_vf_mac(adapter, vf, new_mac);
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else
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retval = -1;
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}
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break;
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case IXGBE_VF_SET_MULTICAST:
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entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
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>> IXGBE_VT_MSGINFO_SHIFT;
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hash_list = (u16 *)&msgbuf[1];
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retval = ixgbe_set_vf_multicasts(adapter, entries,
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hash_list, vf);
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break;
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case IXGBE_VF_SET_LPE:
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WARN_ON((msgbuf[0] & 0xFFFF) == IXGBE_VF_SET_LPE);
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break;
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case IXGBE_VF_SET_VLAN:
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add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
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>> IXGBE_VT_MSGINFO_SHIFT;
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vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
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retval = ixgbe_set_vf_vlan(adapter, add, vid, vf);
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break;
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default:
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DPRINTK(DRV, ERR, "Unhandled Msg %8.8x\n", msgbuf[0]);
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retval = IXGBE_ERR_MBX;
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break;
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}
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/* notify the VF of the results of what it sent us */
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if (retval)
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msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
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else
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msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
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msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
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ixgbe_write_mbx(hw, msgbuf, 1, vf);
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return retval;
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}
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static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
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{
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struct ixgbe_hw *hw = &adapter->hw;
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u32 msg = IXGBE_VT_MSGTYPE_NACK;
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/* if device isn't clear to send it shouldn't be reading either */
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if (!adapter->vfinfo[vf].clear_to_send)
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ixgbe_write_mbx(hw, &msg, 1, vf);
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}
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void ixgbe_msg_task(struct ixgbe_adapter *adapter)
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{
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struct ixgbe_hw *hw = &adapter->hw;
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u32 vf;
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for (vf = 0; vf < adapter->num_vfs; vf++) {
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/* process any reset requests */
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if (!ixgbe_check_for_rst(hw, vf))
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ixgbe_vf_reset_event(adapter, vf);
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/* process any messages pending */
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if (!ixgbe_check_for_msg(hw, vf))
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ixgbe_rcv_msg_from_vf(adapter, vf);
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/* process any acks */
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if (!ixgbe_check_for_ack(hw, vf))
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ixgbe_rcv_ack_from_vf(adapter, vf);
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}
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}
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@ -0,0 +1,45 @@
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/*******************************************************************************
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Intel 10 Gigabit PCI Express Linux driver
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Copyright(c) 1999 - 2009 Intel Corporation.
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This program is free software; you can redistribute it and/or modify it
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under the terms and conditions of the GNU General Public License,
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version 2, as published by the Free Software Foundation.
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This program is distributed in the hope it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
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more details.
|
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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The full GNU General Public License is included in this distribution in
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the file called "COPYING".
|
||||
|
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Contact Information:
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||||
e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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||||
Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*******************************************************************************/
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#ifndef _IXGBE_SRIOV_H_
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#define _IXGBE_SRIOV_H_
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int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
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int entries, u16 *hash_list, u32 vf);
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void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter);
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int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid, u32 vf);
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void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf);
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void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf);
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void ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf);
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void ixgbe_msg_task(struct ixgbe_adapter *adapter);
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int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
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int vf, unsigned char *mac_addr);
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int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask);
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void ixgbe_dump_registers(struct ixgbe_adapter *adapter);
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#endif /* _IXGBE_SRIOV_H_ */
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