1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2013 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 *******************************************************************************/
28 #include <linux/types.h>
29 #include <linux/module.h>
30 #include <linux/pci.h>
31 #include <linux/netdevice.h>
32 #include <linux/vmalloc.h>
33 #include <linux/string.h>
36 #include <linux/tcp.h>
37 #include <linux/ipv6.h>
38 #ifdef NETIF_F_HW_VLAN_TX
39 #include <linux/if_vlan.h>
43 #include "ixgbe_type.h"
44 #include "ixgbe_sriov.h"
47 static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter)
49 struct ixgbe_hw *hw = &adapter->hw;
50 int num_vf_macvlans, i;
51 struct vf_macvlans *mv_list;
53 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED;
54 e_info(probe, "SR-IOV enabled with %d VFs\n", adapter->num_vfs);
56 /* Enable VMDq flag so device will be set in VM mode */
57 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED;
58 if (!adapter->ring_feature[RING_F_VMDQ].limit)
59 adapter->ring_feature[RING_F_VMDQ].limit = 1;
60 adapter->ring_feature[RING_F_VMDQ].offset = adapter->num_vfs;
62 num_vf_macvlans = hw->mac.num_rar_entries -
63 (IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs);
65 adapter->mv_list = mv_list = kcalloc(num_vf_macvlans,
66 sizeof(struct vf_macvlans),
69 /* Initialize list of VF macvlans */
70 INIT_LIST_HEAD(&adapter->vf_mvs.l);
71 for (i = 0; i < num_vf_macvlans; i++) {
74 mv_list->rar_entry = hw->mac.num_rar_entries -
75 (i + adapter->num_vfs + 1);
76 list_add(&mv_list->l, &adapter->vf_mvs.l);
81 /* Initialize default switching mode VEB */
82 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
83 adapter->flags2 |= IXGBE_FLAG2_BRIDGE_MODE_VEB;
85 /* If call to enable VFs succeeded then allocate memory
86 * for per VF control structures.
89 kcalloc(adapter->num_vfs,
90 sizeof(struct vf_data_storage), GFP_KERNEL);
91 if (adapter->vfinfo) {
92 /* limit trafffic classes based on VFs enabled */
93 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) &&
94 (adapter->num_vfs < 16)) {
95 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
96 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
97 } else if (adapter->num_vfs < 32) {
98 adapter->dcb_cfg.num_tcs.pg_tcs = 4;
99 adapter->dcb_cfg.num_tcs.pfc_tcs = 4;
101 adapter->dcb_cfg.num_tcs.pg_tcs = 1;
102 adapter->dcb_cfg.num_tcs.pfc_tcs = 1;
105 /* We do not support RSS w/ SR-IOV */
106 adapter->ring_feature[RING_F_RSS].limit = 1;
108 /* Disable RSC when in SR-IOV mode */
109 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
110 IXGBE_FLAG2_RSC_ENABLED);
112 /* enable spoof checking for all VFs */
113 for (i = 0; i < adapter->num_vfs; i++)
114 adapter->vfinfo[i].spoofchk_enabled = true;
121 /* Note this function is called when the user wants to enable SR-IOV
122 * VFs using the now deprecated module parameter
124 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter)
126 int pre_existing_vfs = 0;
128 pre_existing_vfs = pci_num_vf(adapter->pdev);
129 if (!pre_existing_vfs && !adapter->num_vfs)
132 if (!pre_existing_vfs)
133 dev_warn(&adapter->pdev->dev,
134 "Enabling SR-IOV VFs using the module parameter is deprecated - please use the pci sysfs interface.\n");
136 /* If there are pre-existing VFs then we have to force
137 * use of that many - over ride any module parameter value.
138 * This may result from the user unloading the PF driver
139 * while VFs were assigned to guest VMs or because the VFs
140 * have been created via the new PCI SR-IOV sysfs interface.
142 if (pre_existing_vfs) {
143 adapter->num_vfs = pre_existing_vfs;
144 dev_warn(&adapter->pdev->dev,
145 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n");
149 * The 82599 supports up to 64 VFs per physical function
150 * but this implementation limits allocation to 63 so that
151 * basic networking resources are still available to the
152 * physical function. If the user requests greater thn
153 * 63 VFs then it is an error - reset to default of zero.
155 adapter->num_vfs = min_t(unsigned int, adapter->num_vfs, 63);
157 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
159 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
160 adapter->num_vfs = 0;
165 if (!__ixgbe_enable_sriov(adapter))
168 /* If we have gotten to this point then there is no memory available
169 * to manage the VF devices - print message and bail.
171 e_err(probe, "Unable to allocate memory for VF Data Storage - "
173 ixgbe_disable_sriov(adapter);
176 static bool ixgbe_vfs_are_assigned(struct ixgbe_adapter *adapter)
178 struct pci_dev *pdev = adapter->pdev;
179 struct pci_dev *vfdev;
182 switch (adapter->hw.mac.type) {
183 case ixgbe_mac_82599EB:
184 dev_id = IXGBE_DEV_ID_82599_VF;
187 dev_id = IXGBE_DEV_ID_X540_VF;
193 /* loop through all the VFs to see if we own any that are assigned */
194 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, NULL);
196 /* if we don't own it we don't care */
197 if (vfdev->is_virtfn && vfdev->physfn == pdev) {
198 /* if it is assigned we cannot release it */
199 if (vfdev->dev_flags & PCI_DEV_FLAGS_ASSIGNED)
203 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, vfdev);
209 #endif /* #ifdef CONFIG_PCI_IOV */
210 int ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
212 struct ixgbe_hw *hw = &adapter->hw;
217 /* set num VFs to 0 to prevent access to vfinfo */
218 adapter->num_vfs = 0;
220 /* free VF control structures */
221 kfree(adapter->vfinfo);
222 adapter->vfinfo = NULL;
224 /* free macvlan list */
225 kfree(adapter->mv_list);
226 adapter->mv_list = NULL;
228 /* if SR-IOV is already disabled then there is nothing to do */
229 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
232 #ifdef CONFIG_PCI_IOV
234 * If our VFs are assigned we cannot shut down SR-IOV
235 * without causing issues, so just leave the hardware
236 * available but disabled
238 if (ixgbe_vfs_are_assigned(adapter)) {
239 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n");
242 /* disable iov and allow time for transactions to clear */
243 pci_disable_sriov(adapter->pdev);
246 /* turn off device IOV mode */
247 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 0);
248 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
249 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
250 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
252 /* set default pool back to 0 */
253 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
254 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
255 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
256 IXGBE_WRITE_FLUSH(hw);
258 /* Disable VMDq flag so device will be set in VM mode */
259 if (adapter->ring_feature[RING_F_VMDQ].limit == 1)
260 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
261 adapter->ring_feature[RING_F_VMDQ].offset = 0;
263 rss = min_t(int, IXGBE_MAX_RSS_INDICES, num_online_cpus());
264 adapter->ring_feature[RING_F_RSS].limit = rss;
266 /* take a breather then clean up driver data */
269 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
273 static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs)
275 #ifdef CONFIG_PCI_IOV
276 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
279 int pre_existing_vfs = pci_num_vf(dev);
281 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
282 err = ixgbe_disable_sriov(adapter);
283 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
289 /* While the SR-IOV capability structure reports total VFs to be
290 * 64 we limit the actual number that can be allocated to 63 so
291 * that some transmit/receive resources can be reserved to the
292 * PF. The PCI bus driver already checks for other values out of
300 adapter->num_vfs = num_vfs;
302 err = __ixgbe_enable_sriov(adapter);
306 for (i = 0; i < adapter->num_vfs; i++)
307 ixgbe_vf_configuration(dev, (i | 0x10000000));
309 err = pci_enable_sriov(dev, num_vfs);
311 e_dev_warn("Failed to enable PCI sriov: %d\n", err);
314 ixgbe_sriov_reinit(adapter);
325 static int ixgbe_pci_sriov_disable(struct pci_dev *dev)
327 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
329 u32 current_flags = adapter->flags;
331 err = ixgbe_disable_sriov(adapter);
333 /* Only reinit if no error and state changed */
334 if (!err && current_flags != adapter->flags) {
335 /* ixgbe_disable_sriov() doesn't clear VMDQ flag */
336 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
337 #ifdef CONFIG_PCI_IOV
338 ixgbe_sriov_reinit(adapter);
345 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
348 return ixgbe_pci_sriov_disable(dev);
350 return ixgbe_pci_sriov_enable(dev, num_vfs);
353 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
356 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
357 >> IXGBE_VT_MSGINFO_SHIFT;
358 u16 *hash_list = (u16 *)&msgbuf[1];
359 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
360 struct ixgbe_hw *hw = &adapter->hw;
366 /* only so many hash values supported */
367 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
370 * salt away the number of multi cast addresses assigned
371 * to this VF for later use to restore when the PF multi cast
374 vfinfo->num_vf_mc_hashes = entries;
377 * VFs are limited to using the MTA hash table for their multicast
380 for (i = 0; i < entries; i++) {
381 vfinfo->vf_mc_hashes[i] = hash_list[i];
384 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
385 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
386 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
387 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
388 mta_reg |= (1 << vector_bit);
389 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
395 static void ixgbe_restore_vf_macvlans(struct ixgbe_adapter *adapter)
397 struct ixgbe_hw *hw = &adapter->hw;
398 struct list_head *pos;
399 struct vf_macvlans *entry;
401 list_for_each(pos, &adapter->vf_mvs.l) {
402 entry = list_entry(pos, struct vf_macvlans, l);
404 hw->mac.ops.set_rar(hw, entry->rar_entry,
406 entry->vf, IXGBE_RAH_AV);
410 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
412 struct ixgbe_hw *hw = &adapter->hw;
413 struct vf_data_storage *vfinfo;
419 for (i = 0; i < adapter->num_vfs; i++) {
420 vfinfo = &adapter->vfinfo[i];
421 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
422 hw->addr_ctrl.mta_in_use++;
423 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
424 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
425 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
426 mta_reg |= (1 << vector_bit);
427 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
431 /* Restore any VF macvlans */
432 ixgbe_restore_vf_macvlans(adapter);
435 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
438 /* VLAN 0 is a special case, don't allow it to be removed */
442 return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add);
445 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
447 struct ixgbe_hw *hw = &adapter->hw;
448 int max_frame = msgbuf[1];
452 * For 82599EB we have to keep all PFs and VFs operating with
453 * the same max_frame value in order to avoid sending an oversize
454 * frame to a VF. In order to guarantee this is handled correctly
455 * for all cases we have several special exceptions to take into
456 * account before we can enable the VF for receive
458 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
459 struct net_device *dev = adapter->netdev;
460 int pf_max_frame = dev->mtu + ETH_HLEN;
461 u32 reg_offset, vf_shift, vfre;
465 if (dev->features & NETIF_F_FCOE_MTU)
466 pf_max_frame = max_t(int, pf_max_frame,
467 IXGBE_FCOE_JUMBO_FRAME_SIZE);
469 #endif /* CONFIG_FCOE */
470 switch (adapter->vfinfo[vf].vf_api) {
471 case ixgbe_mbox_api_11:
473 * Version 1.1 supports jumbo frames on VFs if PF has
474 * jumbo frames enabled which means legacy VFs are
477 if (pf_max_frame > ETH_FRAME_LEN)
481 * If the PF or VF are running w/ jumbo frames enabled
482 * we need to shut down the VF Rx path as we cannot
483 * support jumbo frames on legacy VFs
485 if ((pf_max_frame > ETH_FRAME_LEN) ||
486 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
491 /* determine VF receive enable location */
493 reg_offset = vf / 32;
495 /* enable or disable receive depending on error */
496 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
498 vfre &= ~(1 << vf_shift);
500 vfre |= 1 << vf_shift;
501 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);
504 e_err(drv, "VF max_frame %d out of range\n", max_frame);
509 /* MTU < 68 is an error and causes problems on some kernels */
510 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
511 e_err(drv, "VF max_frame %d out of range\n", max_frame);
515 /* pull current max frame size from hardware */
516 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
517 max_frs &= IXGBE_MHADD_MFS_MASK;
518 max_frs >>= IXGBE_MHADD_MFS_SHIFT;
520 if (max_frs < max_frame) {
521 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
522 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
525 e_info(hw, "VF requests change max MTU to %d\n", max_frame);
530 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
532 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
533 vmolr |= (IXGBE_VMOLR_ROMPE |
536 vmolr |= IXGBE_VMOLR_AUPE;
538 vmolr &= ~IXGBE_VMOLR_AUPE;
539 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
542 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
544 struct ixgbe_hw *hw = &adapter->hw;
546 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
548 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
550 struct ixgbe_hw *hw = &adapter->hw;
551 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
552 int rar_entry = hw->mac.num_rar_entries - (vf + 1);
553 u8 num_tcs = netdev_get_num_tc(adapter->netdev);
555 /* add PF assigned VLAN or VLAN 0 */
556 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);
558 /* reset offloads to defaults */
559 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);
561 /* set outgoing tags for VFs */
562 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
563 ixgbe_clear_vmvir(adapter, vf);
565 if (vfinfo->pf_qos || !num_tcs)
566 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
569 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
570 adapter->default_up, vf);
572 if (vfinfo->spoofchk_enabled)
573 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
576 /* reset multicast table array for vf */
577 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
579 /* Flush and reset the mta with the new values */
580 ixgbe_set_rx_mode(adapter->netdev);
582 hw->mac.ops.clear_rar(hw, rar_entry);
584 /* reset VF api back to unknown */
585 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;
588 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
589 int vf, unsigned char *mac_addr)
591 struct ixgbe_hw *hw = &adapter->hw;
592 int rar_entry = hw->mac.num_rar_entries - (vf + 1);
594 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, 6);
595 hw->mac.ops.set_rar(hw, rar_entry, mac_addr, vf, IXGBE_RAH_AV);
600 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
601 int vf, int index, unsigned char *mac_addr)
603 struct ixgbe_hw *hw = &adapter->hw;
604 struct list_head *pos;
605 struct vf_macvlans *entry;
608 list_for_each(pos, &adapter->vf_mvs.l) {
609 entry = list_entry(pos, struct vf_macvlans, l);
610 if (entry->vf == vf) {
613 entry->is_macvlan = false;
614 hw->mac.ops.clear_rar(hw, entry->rar_entry);
620 * If index was zero then we were asked to clear the uc list
621 * for the VF. We're done.
628 list_for_each(pos, &adapter->vf_mvs.l) {
629 entry = list_entry(pos, struct vf_macvlans, l);
635 * If we traversed the entire list and didn't find a free entry
636 * then we're out of space on the RAR table. Also entry may
637 * be NULL because the original memory allocation for the list
638 * failed, which is not fatal but does mean we can't support
639 * VF requests for MACVLAN because we couldn't allocate
640 * memory for the list management required.
642 if (!entry || !entry->free)
646 entry->is_macvlan = true;
648 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
650 hw->mac.ops.set_rar(hw, entry->rar_entry, mac_addr, vf, IXGBE_RAH_AV);
655 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
657 unsigned char vf_mac_addr[6];
658 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
659 unsigned int vfn = (event_mask & 0x3f);
661 bool enable = ((event_mask & 0x10000000U) != 0);
664 eth_random_addr(vf_mac_addr);
665 e_info(probe, "IOV: VF %d is enabled MAC %pM\n",
668 * Store away the VF "permananet" MAC address, it will ask
671 memcpy(adapter->vfinfo[vfn].vf_mac_addresses, vf_mac_addr, 6);
677 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
679 struct ixgbe_hw *hw = &adapter->hw;
680 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
682 u32 reg_offset, vf_shift;
683 u8 *addr = (u8 *)(&msgbuf[1]);
685 e_info(probe, "VF Reset msg received from vf %d\n", vf);
687 /* reset the filters for the device */
688 ixgbe_vf_reset_event(adapter, vf);
690 /* set vf mac address */
691 ixgbe_set_vf_mac(adapter, vf, vf_mac);
694 reg_offset = vf / 32;
696 /* enable transmit for vf */
697 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
698 reg |= 1 << vf_shift;
699 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg);
701 /* enable receive for vf */
702 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
703 reg |= 1 << vf_shift;
705 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.
706 * For more info take a look at ixgbe_set_vf_lpe
708 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
709 struct net_device *dev = adapter->netdev;
710 int pf_max_frame = dev->mtu + ETH_HLEN;
713 if (dev->features & NETIF_F_FCOE_MTU)
714 pf_max_frame = max_t(int, pf_max_frame,
715 IXGBE_FCOE_JUMBO_FRAME_SIZE);
717 #endif /* CONFIG_FCOE */
718 if (pf_max_frame > ETH_FRAME_LEN)
719 reg &= ~(1 << vf_shift);
721 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);
723 /* enable VF mailbox for further messages */
724 adapter->vfinfo[vf].clear_to_send = true;
726 /* Enable counting of spoofed packets in the SSVPC register */
727 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
728 reg |= (1 << vf_shift);
729 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
731 /* reply to reset with ack and vf mac address */
732 msgbuf[0] = IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK;
733 memcpy(addr, vf_mac, ETH_ALEN);
736 * Piggyback the multicast filter type so VF can compute the
739 msgbuf[3] = hw->mac.mc_filter_type;
740 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
745 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
748 u8 *new_mac = ((u8 *)(&msgbuf[1]));
750 if (!is_valid_ether_addr(new_mac)) {
751 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
755 if (adapter->vfinfo[vf].pf_set_mac &&
756 memcmp(adapter->vfinfo[vf].vf_mac_addresses, new_mac,
759 "VF %d attempted to override administratively set MAC address\n"
760 "Reload the VF driver to resume operations\n",
765 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0;
768 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
771 struct ixgbe_hw *hw = &adapter->hw;
772 int add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT;
773 int vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
775 u8 tcs = netdev_get_num_tc(adapter->netdev);
777 if (adapter->vfinfo[vf].pf_vlan || tcs) {
779 "VF %d attempted to override administratively set VLAN configuration\n"
780 "Reload the VF driver to resume operations\n",
786 adapter->vfinfo[vf].vlan_count++;
787 else if (adapter->vfinfo[vf].vlan_count)
788 adapter->vfinfo[vf].vlan_count--;
790 err = ixgbe_set_vf_vlan(adapter, add, vid, vf);
791 if (!err && adapter->vfinfo[vf].spoofchk_enabled)
792 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
797 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
800 u8 *new_mac = ((u8 *)(&msgbuf[1]));
801 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >>
802 IXGBE_VT_MSGINFO_SHIFT;
805 if (adapter->vfinfo[vf].pf_set_mac && index > 0) {
807 "VF %d requested MACVLAN filter but is administratively denied\n",
812 /* An non-zero index indicates the VF is setting a filter */
814 if (!is_valid_ether_addr(new_mac)) {
815 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
820 * If the VF is allowed to set MAC filters then turn off
821 * anti-spoofing to avoid false positives.
823 if (adapter->vfinfo[vf].spoofchk_enabled)
824 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, vf, false);
827 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
830 "VF %d has requested a MACVLAN filter but there is no space for it\n",
836 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
842 case ixgbe_mbox_api_10:
843 case ixgbe_mbox_api_11:
844 adapter->vfinfo[vf].vf_api = api;
850 e_info(drv, "VF %d requested invalid api version %u\n", vf, api);
855 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
858 struct net_device *dev = adapter->netdev;
859 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
860 unsigned int default_tc = 0;
861 u8 num_tcs = netdev_get_num_tc(dev);
863 /* verify the PF is supporting the correct APIs */
864 switch (adapter->vfinfo[vf].vf_api) {
865 case ixgbe_mbox_api_20:
866 case ixgbe_mbox_api_11:
872 /* only allow 1 Tx queue for bandwidth limiting */
873 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
874 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
876 /* if TCs > 1 determine which TC belongs to default user priority */
878 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
880 /* notify VF of need for VLAN tag stripping, and correct queue */
882 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
883 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
884 msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
886 msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
888 /* notify VF of default queue */
889 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
894 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
896 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
897 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
898 struct ixgbe_hw *hw = &adapter->hw;
901 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
904 pr_err("Error receiving message from VF\n");
908 /* this is a message we already processed, do nothing */
909 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
912 /* flush the ack before we write any messages back */
913 IXGBE_WRITE_FLUSH(hw);
915 if (msgbuf[0] == IXGBE_VF_RESET)
916 return ixgbe_vf_reset_msg(adapter, vf);
919 * until the vf completes a virtual function reset it should not be
920 * allowed to start any configuration.
922 if (!adapter->vfinfo[vf].clear_to_send) {
923 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
924 ixgbe_write_mbx(hw, msgbuf, 1, vf);
928 switch ((msgbuf[0] & 0xFFFF)) {
929 case IXGBE_VF_SET_MAC_ADDR:
930 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
932 case IXGBE_VF_SET_MULTICAST:
933 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
935 case IXGBE_VF_SET_VLAN:
936 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
938 case IXGBE_VF_SET_LPE:
939 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf);
941 case IXGBE_VF_SET_MACVLAN:
942 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
944 case IXGBE_VF_API_NEGOTIATE:
945 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
947 case IXGBE_VF_GET_QUEUES:
948 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
951 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
952 retval = IXGBE_ERR_MBX;
956 /* notify the VF of the results of what it sent us */
958 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
960 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
962 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
964 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);
969 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
971 struct ixgbe_hw *hw = &adapter->hw;
972 u32 msg = IXGBE_VT_MSGTYPE_NACK;
974 /* if device isn't clear to send it shouldn't be reading either */
975 if (!adapter->vfinfo[vf].clear_to_send)
976 ixgbe_write_mbx(hw, &msg, 1, vf);
979 void ixgbe_msg_task(struct ixgbe_adapter *adapter)
981 struct ixgbe_hw *hw = &adapter->hw;
984 for (vf = 0; vf < adapter->num_vfs; vf++) {
985 /* process any reset requests */
986 if (!ixgbe_check_for_rst(hw, vf))
987 ixgbe_vf_reset_event(adapter, vf);
989 /* process any messages pending */
990 if (!ixgbe_check_for_msg(hw, vf))
991 ixgbe_rcv_msg_from_vf(adapter, vf);
993 /* process any acks */
994 if (!ixgbe_check_for_ack(hw, vf))
995 ixgbe_rcv_ack_from_vf(adapter, vf);
999 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter)
1001 struct ixgbe_hw *hw = &adapter->hw;
1003 /* disable transmit and receive for all vfs */
1004 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0);
1005 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0);
1007 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0);
1008 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
1011 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
1013 struct ixgbe_hw *hw = &adapter->hw;
1017 for (i = 0 ; i < adapter->num_vfs; i++) {
1018 ping = IXGBE_PF_CONTROL_MSG;
1019 if (adapter->vfinfo[i].clear_to_send)
1020 ping |= IXGBE_VT_MSGTYPE_CTS;
1021 ixgbe_write_mbx(hw, &ping, 1, i);
1025 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1027 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1028 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs))
1030 adapter->vfinfo[vf].pf_set_mac = true;
1031 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf);
1032 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this"
1033 " change effective.");
1034 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1035 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set,"
1036 " but the PF device is not up.\n");
1037 dev_warn(&adapter->pdev->dev, "Bring the PF device up before"
1038 " attempting to use the VF device.\n");
1040 return ixgbe_set_vf_mac(adapter, vf, mac);
1043 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos)
1046 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1047 struct ixgbe_hw *hw = &adapter->hw;
1049 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
1052 if (adapter->vfinfo[vf].pf_vlan)
1053 err = ixgbe_set_vf_vlan(adapter, false,
1054 adapter->vfinfo[vf].pf_vlan,
1058 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
1061 ixgbe_set_vmvir(adapter, vlan, qos, vf);
1062 ixgbe_set_vmolr(hw, vf, false);
1063 if (adapter->vfinfo[vf].spoofchk_enabled)
1064 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
1065 adapter->vfinfo[vf].vlan_count++;
1066 adapter->vfinfo[vf].pf_vlan = vlan;
1067 adapter->vfinfo[vf].pf_qos = qos;
1068 dev_info(&adapter->pdev->dev,
1069 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
1070 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1071 dev_warn(&adapter->pdev->dev,
1072 "The VF VLAN has been set,"
1073 " but the PF device is not up.\n");
1074 dev_warn(&adapter->pdev->dev,
1075 "Bring the PF device up before"
1076 " attempting to use the VF device.\n");
1079 err = ixgbe_set_vf_vlan(adapter, false,
1080 adapter->vfinfo[vf].pf_vlan, vf);
1081 ixgbe_clear_vmvir(adapter, vf);
1082 ixgbe_set_vmolr(hw, vf, true);
1083 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
1084 if (adapter->vfinfo[vf].vlan_count)
1085 adapter->vfinfo[vf].vlan_count--;
1086 adapter->vfinfo[vf].pf_vlan = 0;
1087 adapter->vfinfo[vf].pf_qos = 0;
1093 static int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
1095 switch (adapter->link_speed) {
1096 case IXGBE_LINK_SPEED_100_FULL:
1098 case IXGBE_LINK_SPEED_1GB_FULL:
1100 case IXGBE_LINK_SPEED_10GB_FULL:
1107 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
1109 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1110 struct ixgbe_hw *hw = &adapter->hw;
1112 u16 queue, queues_per_pool;
1113 u16 tx_rate = adapter->vfinfo[vf].tx_rate;
1116 /* start with base link speed value */
1117 bcnrc_val = adapter->vf_rate_link_speed;
1119 /* Calculate the rate factor values to set */
1120 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1121 bcnrc_val /= tx_rate;
1123 /* clear everything but the rate factor */
1124 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1125 IXGBE_RTTBCNRC_RF_DEC_MASK;
1127 /* enable the rate scheduler */
1128 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1132 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
1133 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
1134 * and 0x004 otherwise.
1136 switch (hw->mac.type) {
1137 case ixgbe_mac_82599EB:
1138 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
1140 case ixgbe_mac_X540:
1141 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
1147 /* determine how many queues per pool based on VMDq mask */
1148 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
1150 /* write value for all Tx queues belonging to VF */
1151 for (queue = 0; queue < queues_per_pool; queue++) {
1152 unsigned int reg_idx = (vf * queues_per_pool) + queue;
1154 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
1155 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1159 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
1163 /* VF Tx rate limit was not set */
1164 if (!adapter->vf_rate_link_speed)
1167 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
1168 adapter->vf_rate_link_speed = 0;
1169 dev_info(&adapter->pdev->dev,
1170 "Link speed has been changed. VF Transmit rate is disabled\n");
1173 for (i = 0; i < adapter->num_vfs; i++) {
1174 if (!adapter->vf_rate_link_speed)
1175 adapter->vfinfo[i].tx_rate = 0;
1177 ixgbe_set_vf_rate_limit(adapter, i);
1181 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate)
1183 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1186 /* verify VF is active */
1187 if (vf >= adapter->num_vfs)
1190 /* verify link is up */
1191 if (!adapter->link_up)
1194 /* verify we are linked at 10Gbps */
1195 link_speed = ixgbe_link_mbps(adapter);
1196 if (link_speed != 10000)
1199 /* rate limit cannot be less than 10Mbs or greater than link speed */
1200 if (tx_rate && ((tx_rate <= 10) || (tx_rate > link_speed)))
1204 adapter->vf_rate_link_speed = link_speed;
1205 adapter->vfinfo[vf].tx_rate = tx_rate;
1207 /* update hardware configuration */
1208 ixgbe_set_vf_rate_limit(adapter, vf);
1213 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1215 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1216 int vf_target_reg = vf >> 3;
1217 int vf_target_shift = vf % 8;
1218 struct ixgbe_hw *hw = &adapter->hw;
1221 adapter->vfinfo[vf].spoofchk_enabled = setting;
1223 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
1224 regval &= ~(1 << vf_target_shift);
1225 regval |= (setting << vf_target_shift);
1226 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);
1228 if (adapter->vfinfo[vf].vlan_count) {
1229 vf_target_shift += IXGBE_SPOOF_VLANAS_SHIFT;
1230 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
1231 regval &= ~(1 << vf_target_shift);
1232 regval |= (setting << vf_target_shift);
1233 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);
1239 int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1240 int vf, struct ifla_vf_info *ivi)
1242 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1243 if (vf >= adapter->num_vfs)
1246 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
1247 ivi->tx_rate = adapter->vfinfo[vf].tx_rate;
1248 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1249 ivi->qos = adapter->vfinfo[vf].pf_qos;
1250 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;