1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2009 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26 *******************************************************************************/
29 #include <linux/types.h>
30 #include <linux/module.h>
31 #include <linux/pci.h>
32 #include <linux/netdevice.h>
33 #include <linux/vmalloc.h>
34 #include <linux/string.h>
37 #include <linux/tcp.h>
38 #include <linux/ipv6.h>
39 #ifdef NETIF_F_HW_VLAN_TX
40 #include <linux/if_vlan.h>
45 #include "ixgbe_sriov.h"
47 int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
48 int entries, u16 *hash_list, u32 vf)
50 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
53 /* only so many hash values supported */
54 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
57 * salt away the number of multi cast addresses assigned
58 * to this VF for later use to restore when the PF multi cast
61 vfinfo->num_vf_mc_hashes = entries;
64 * VFs are limited to using the MTA hash table for their multicast
67 for (i = 0; i < entries; i++) {
68 vfinfo->vf_mc_hashes[i] = hash_list[i];;
71 /* Flush and reset the mta with the new values */
72 ixgbe_set_rx_mode(adapter->netdev);
77 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
79 struct ixgbe_hw *hw = &adapter->hw;
80 struct vf_data_storage *vfinfo;
86 for (i = 0; i < adapter->num_vfs; i++) {
87 vfinfo = &adapter->vfinfo[i];
88 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
89 hw->addr_ctrl.mta_in_use++;
90 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
91 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
92 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
93 mta_reg |= (1 << vector_bit);
94 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
99 int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid, u32 vf)
101 return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add);
105 void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
107 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
108 vmolr |= (IXGBE_VMOLR_ROMPE |
112 vmolr |= IXGBE_VMOLR_AUPE;
114 vmolr &= ~IXGBE_VMOLR_AUPE;
115 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
118 static void ixgbe_set_vmvir(struct ixgbe_adapter *adapter, u32 vid, u32 vf)
120 struct ixgbe_hw *hw = &adapter->hw;
123 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf),
124 (vid | IXGBE_VMVIR_VLANA_DEFAULT));
126 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
129 inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
131 struct ixgbe_hw *hw = &adapter->hw;
133 /* reset offloads to defaults */
134 if (adapter->vfinfo[vf].pf_vlan) {
135 ixgbe_set_vf_vlan(adapter, true,
136 adapter->vfinfo[vf].pf_vlan, vf);
137 ixgbe_set_vmvir(adapter,
138 (adapter->vfinfo[vf].pf_vlan |
139 (adapter->vfinfo[vf].pf_qos <<
140 VLAN_PRIO_SHIFT)), vf);
141 ixgbe_set_vmolr(hw, vf, false);
143 ixgbe_set_vmvir(adapter, 0, vf);
144 ixgbe_set_vmolr(hw, vf, true);
147 /* reset multicast table array for vf */
148 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
150 /* Flush and reset the mta with the new values */
151 ixgbe_set_rx_mode(adapter->netdev);
153 if (adapter->vfinfo[vf].rar > 0) {
154 adapter->hw.mac.ops.clear_rar(&adapter->hw,
155 adapter->vfinfo[vf].rar);
156 adapter->vfinfo[vf].rar = -1;
160 int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
161 int vf, unsigned char *mac_addr)
163 struct ixgbe_hw *hw = &adapter->hw;
165 adapter->vfinfo[vf].rar = hw->mac.ops.set_rar(hw, vf + 1, mac_addr,
167 if (adapter->vfinfo[vf].rar < 0) {
168 DPRINTK(DRV, ERR, "Could not set MAC Filter for VF %d\n", vf);
172 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, 6);
177 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
179 unsigned char vf_mac_addr[6];
180 struct net_device *netdev = pci_get_drvdata(pdev);
181 struct ixgbe_adapter *adapter = netdev_priv(netdev);
182 unsigned int vfn = (event_mask & 0x3f);
184 bool enable = ((event_mask & 0x10000000U) != 0);
187 random_ether_addr(vf_mac_addr);
188 DPRINTK(PROBE, INFO, "IOV: VF %d is enabled "
189 "mac %02X:%02X:%02X:%02X:%02X:%02X\n",
191 vf_mac_addr[0], vf_mac_addr[1], vf_mac_addr[2],
192 vf_mac_addr[3], vf_mac_addr[4], vf_mac_addr[5]);
194 * Store away the VF "permananet" MAC address, it will ask
197 memcpy(adapter->vfinfo[vfn].vf_mac_addresses, vf_mac_addr, 6);
203 inline void ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
205 struct ixgbe_hw *hw = &adapter->hw;
207 u32 reg_offset, vf_shift;
210 reg_offset = vf / 32;
212 /* enable transmit and receive for vf */
213 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
214 reg |= (reg | (1 << vf_shift));
215 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg);
217 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
218 reg |= (reg | (1 << vf_shift));
219 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);
221 ixgbe_vf_reset_event(adapter, vf);
224 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
226 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
227 u32 msgbuf[mbx_size];
228 struct ixgbe_hw *hw = &adapter->hw;
234 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
237 printk(KERN_ERR "Error receiving message from VF\n");
239 /* this is a message we already processed, do nothing */
240 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
244 * until the vf completes a virtual function reset it should not be
245 * allowed to start any configuration.
248 if (msgbuf[0] == IXGBE_VF_RESET) {
249 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
250 u8 *addr = (u8 *)(&msgbuf[1]);
251 DPRINTK(PROBE, INFO, "VF Reset msg received from vf %d\n", vf);
252 adapter->vfinfo[vf].clear_to_send = false;
253 ixgbe_vf_reset_msg(adapter, vf);
254 adapter->vfinfo[vf].clear_to_send = true;
256 /* reply to reset with ack and vf mac address */
257 msgbuf[0] = IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK;
258 memcpy(addr, vf_mac, IXGBE_ETH_LENGTH_OF_ADDRESS);
260 * Piggyback the multicast filter type so VF can compute the
263 msgbuf[3] = hw->mac.mc_filter_type;
264 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
269 if (!adapter->vfinfo[vf].clear_to_send) {
270 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
271 ixgbe_write_mbx(hw, msgbuf, 1, vf);
275 switch ((msgbuf[0] & 0xFFFF)) {
276 case IXGBE_VF_SET_MAC_ADDR:
278 u8 *new_mac = ((u8 *)(&msgbuf[1]));
279 if (is_valid_ether_addr(new_mac) &&
280 !adapter->vfinfo[vf].pf_set_mac)
281 ixgbe_set_vf_mac(adapter, vf, new_mac);
283 ixgbe_set_vf_mac(adapter,
284 vf, adapter->vfinfo[vf].vf_mac_addresses);
287 case IXGBE_VF_SET_MULTICAST:
288 entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
289 >> IXGBE_VT_MSGINFO_SHIFT;
290 hash_list = (u16 *)&msgbuf[1];
291 retval = ixgbe_set_vf_multicasts(adapter, entries,
294 case IXGBE_VF_SET_LPE:
295 WARN_ON((msgbuf[0] & 0xFFFF) == IXGBE_VF_SET_LPE);
297 case IXGBE_VF_SET_VLAN:
298 add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
299 >> IXGBE_VT_MSGINFO_SHIFT;
300 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
301 retval = ixgbe_set_vf_vlan(adapter, add, vid, vf);
304 DPRINTK(DRV, ERR, "Unhandled Msg %8.8x\n", msgbuf[0]);
305 retval = IXGBE_ERR_MBX;
309 /* notify the VF of the results of what it sent us */
311 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
313 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
315 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
317 ixgbe_write_mbx(hw, msgbuf, 1, vf);
322 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
324 struct ixgbe_hw *hw = &adapter->hw;
325 u32 msg = IXGBE_VT_MSGTYPE_NACK;
327 /* if device isn't clear to send it shouldn't be reading either */
328 if (!adapter->vfinfo[vf].clear_to_send)
329 ixgbe_write_mbx(hw, &msg, 1, vf);
332 void ixgbe_msg_task(struct ixgbe_adapter *adapter)
334 struct ixgbe_hw *hw = &adapter->hw;
337 for (vf = 0; vf < adapter->num_vfs; vf++) {
338 /* process any reset requests */
339 if (!ixgbe_check_for_rst(hw, vf))
340 ixgbe_vf_reset_event(adapter, vf);
342 /* process any messages pending */
343 if (!ixgbe_check_for_msg(hw, vf))
344 ixgbe_rcv_msg_from_vf(adapter, vf);
346 /* process any acks */
347 if (!ixgbe_check_for_ack(hw, vf))
348 ixgbe_rcv_ack_from_vf(adapter, vf);
352 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter)
354 struct ixgbe_hw *hw = &adapter->hw;
356 /* disable transmit and receive for all vfs */
357 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0);
358 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0);
360 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0);
361 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
364 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
366 struct ixgbe_hw *hw = &adapter->hw;
370 for (i = 0 ; i < adapter->num_vfs; i++) {
371 ping = IXGBE_PF_CONTROL_MSG;
372 if (adapter->vfinfo[i].clear_to_send)
373 ping |= IXGBE_VT_MSGTYPE_CTS;
374 ixgbe_write_mbx(hw, &ping, 1, i);
378 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
380 struct ixgbe_adapter *adapter = netdev_priv(netdev);
381 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs))
383 adapter->vfinfo[vf].pf_set_mac = true;
384 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf);
385 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this"
386 " change effective.");
387 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
388 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set,"
389 " but the PF device is not up.\n");
390 dev_warn(&adapter->pdev->dev, "Bring the PF device up before"
391 " attempting to use the VF device.\n");
393 return ixgbe_set_vf_mac(adapter, vf, mac);
396 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos)
399 struct ixgbe_adapter *adapter = netdev_priv(netdev);
401 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
404 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
407 ixgbe_set_vmvir(adapter, vlan | (qos << VLAN_PRIO_SHIFT), vf);
408 ixgbe_set_vmolr(&adapter->hw, vf, false);
409 adapter->vfinfo[vf].pf_vlan = vlan;
410 adapter->vfinfo[vf].pf_qos = qos;
411 dev_info(&adapter->pdev->dev,
412 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
413 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
414 dev_warn(&adapter->pdev->dev,
415 "The VF VLAN has been set,"
416 " but the PF device is not up.\n");
417 dev_warn(&adapter->pdev->dev,
418 "Bring the PF device up before"
419 " attempting to use the VF device.\n");
422 err = ixgbe_set_vf_vlan(adapter, false,
423 adapter->vfinfo[vf].pf_vlan, vf);
424 ixgbe_set_vmvir(adapter, vlan, vf);
425 ixgbe_set_vmolr(&adapter->hw, vf, true);
426 adapter->vfinfo[vf].pf_vlan = 0;
427 adapter->vfinfo[vf].pf_qos = 0;
433 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate)
438 int ixgbe_ndo_get_vf_config(struct net_device *netdev,
439 int vf, struct ifla_vf_info *ivi)
441 struct ixgbe_adapter *adapter = netdev_priv(netdev);
442 if (vf >= adapter->num_vfs)
445 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
447 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
448 ivi->qos = adapter->vfinfo[vf].pf_qos;