1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2014 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 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
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_CTAG_TX
40 #include <linux/if_vlan.h>
44 #include "ixgbe_type.h"
45 #include "ixgbe_sriov.h"
48 static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter)
50 struct ixgbe_hw *hw = &adapter->hw;
51 int num_vf_macvlans, i;
52 struct vf_macvlans *mv_list;
54 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED;
55 e_info(probe, "SR-IOV enabled with %d VFs\n", adapter->num_vfs);
57 /* Enable VMDq flag so device will be set in VM mode */
58 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED;
59 if (!adapter->ring_feature[RING_F_VMDQ].limit)
60 adapter->ring_feature[RING_F_VMDQ].limit = 1;
61 adapter->ring_feature[RING_F_VMDQ].offset = adapter->num_vfs;
63 num_vf_macvlans = hw->mac.num_rar_entries -
64 (IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs);
66 adapter->mv_list = mv_list = kcalloc(num_vf_macvlans,
67 sizeof(struct vf_macvlans),
70 /* Initialize list of VF macvlans */
71 INIT_LIST_HEAD(&adapter->vf_mvs.l);
72 for (i = 0; i < num_vf_macvlans; i++) {
75 list_add(&mv_list->l, &adapter->vf_mvs.l);
80 /* Initialize default switching mode VEB */
81 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
82 adapter->flags2 |= IXGBE_FLAG2_BRIDGE_MODE_VEB;
84 /* If call to enable VFs succeeded then allocate memory
85 * for per VF control structures.
88 kcalloc(adapter->num_vfs,
89 sizeof(struct vf_data_storage), GFP_KERNEL);
90 if (adapter->vfinfo) {
91 /* limit trafffic classes based on VFs enabled */
92 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) &&
93 (adapter->num_vfs < 16)) {
94 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
95 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
96 } else if (adapter->num_vfs < 32) {
97 adapter->dcb_cfg.num_tcs.pg_tcs = 4;
98 adapter->dcb_cfg.num_tcs.pfc_tcs = 4;
100 adapter->dcb_cfg.num_tcs.pg_tcs = 1;
101 adapter->dcb_cfg.num_tcs.pfc_tcs = 1;
104 /* We do not support RSS w/ SR-IOV */
105 adapter->ring_feature[RING_F_RSS].limit = 1;
107 /* Disable RSC when in SR-IOV mode */
108 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
109 IXGBE_FLAG2_RSC_ENABLED);
111 /* enable spoof checking for all VFs */
112 for (i = 0; i < adapter->num_vfs; i++)
113 adapter->vfinfo[i].spoofchk_enabled = true;
120 /* Note this function is called when the user wants to enable SR-IOV
121 * VFs using the now deprecated module parameter
123 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter)
125 int pre_existing_vfs = 0;
127 pre_existing_vfs = pci_num_vf(adapter->pdev);
128 if (!pre_existing_vfs && !adapter->num_vfs)
131 /* If there are pre-existing VFs then we have to force
132 * use of that many - over ride any module parameter value.
133 * This may result from the user unloading the PF driver
134 * while VFs were assigned to guest VMs or because the VFs
135 * have been created via the new PCI SR-IOV sysfs interface.
137 if (pre_existing_vfs) {
138 adapter->num_vfs = pre_existing_vfs;
139 dev_warn(&adapter->pdev->dev,
140 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n");
144 * The 82599 supports up to 64 VFs per physical function
145 * but this implementation limits allocation to 63 so that
146 * basic networking resources are still available to the
147 * physical function. If the user requests greater thn
148 * 63 VFs then it is an error - reset to default of zero.
150 adapter->num_vfs = min_t(unsigned int, adapter->num_vfs, IXGBE_MAX_VFS_DRV_LIMIT);
152 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
154 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
155 adapter->num_vfs = 0;
160 if (!__ixgbe_enable_sriov(adapter))
163 /* If we have gotten to this point then there is no memory available
164 * to manage the VF devices - print message and bail.
166 e_err(probe, "Unable to allocate memory for VF Data Storage - "
168 ixgbe_disable_sriov(adapter);
171 #endif /* #ifdef CONFIG_PCI_IOV */
172 int ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
174 struct ixgbe_hw *hw = &adapter->hw;
179 /* set num VFs to 0 to prevent access to vfinfo */
180 adapter->num_vfs = 0;
182 /* free VF control structures */
183 kfree(adapter->vfinfo);
184 adapter->vfinfo = NULL;
186 /* free macvlan list */
187 kfree(adapter->mv_list);
188 adapter->mv_list = NULL;
190 /* if SR-IOV is already disabled then there is nothing to do */
191 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
194 #ifdef CONFIG_PCI_IOV
196 * If our VFs are assigned we cannot shut down SR-IOV
197 * without causing issues, so just leave the hardware
198 * available but disabled
200 if (pci_vfs_assigned(adapter->pdev)) {
201 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n");
204 /* disable iov and allow time for transactions to clear */
205 pci_disable_sriov(adapter->pdev);
208 /* turn off device IOV mode */
209 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 0);
210 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
211 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
212 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
214 /* set default pool back to 0 */
215 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
216 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
217 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
218 IXGBE_WRITE_FLUSH(hw);
220 /* Disable VMDq flag so device will be set in VM mode */
221 if (adapter->ring_feature[RING_F_VMDQ].limit == 1) {
222 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
223 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
224 rss = min_t(int, ixgbe_max_rss_indices(adapter),
227 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus());
230 adapter->ring_feature[RING_F_VMDQ].offset = 0;
231 adapter->ring_feature[RING_F_RSS].limit = rss;
233 /* take a breather then clean up driver data */
238 static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs)
240 #ifdef CONFIG_PCI_IOV
241 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
244 int pre_existing_vfs = pci_num_vf(dev);
246 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
247 err = ixgbe_disable_sriov(adapter);
248 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
254 /* While the SR-IOV capability structure reports total VFs to be 64,
255 * we have to limit the actual number allocated based on two factors.
256 * First, we reserve some transmit/receive resources for the PF.
257 * Second, VMDQ also uses the same pools that SR-IOV does. We need to
258 * account for this, so that we don't accidentally allocate more VFs
259 * than we have available pools. The PCI bus driver already checks for
260 * other values out of range.
262 if ((num_vfs + adapter->num_rx_pools) > IXGBE_MAX_VF_FUNCTIONS)
265 adapter->num_vfs = num_vfs;
267 err = __ixgbe_enable_sriov(adapter);
271 for (i = 0; i < adapter->num_vfs; i++)
272 ixgbe_vf_configuration(dev, (i | 0x10000000));
274 err = pci_enable_sriov(dev, num_vfs);
276 e_dev_warn("Failed to enable PCI sriov: %d\n", err);
279 ixgbe_sriov_reinit(adapter);
287 static int ixgbe_pci_sriov_disable(struct pci_dev *dev)
289 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
291 #ifdef CONFIG_PCI_IOV
292 u32 current_flags = adapter->flags;
295 err = ixgbe_disable_sriov(adapter);
297 /* Only reinit if no error and state changed */
298 #ifdef CONFIG_PCI_IOV
299 if (!err && current_flags != adapter->flags)
300 ixgbe_sriov_reinit(adapter);
306 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
309 return ixgbe_pci_sriov_disable(dev);
311 return ixgbe_pci_sriov_enable(dev, num_vfs);
314 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
317 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
318 >> IXGBE_VT_MSGINFO_SHIFT;
319 u16 *hash_list = (u16 *)&msgbuf[1];
320 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
321 struct ixgbe_hw *hw = &adapter->hw;
326 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
328 /* only so many hash values supported */
329 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
332 * salt away the number of multi cast addresses assigned
333 * to this VF for later use to restore when the PF multi cast
336 vfinfo->num_vf_mc_hashes = entries;
339 * VFs are limited to using the MTA hash table for their multicast
342 for (i = 0; i < entries; i++) {
343 vfinfo->vf_mc_hashes[i] = hash_list[i];
346 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
347 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
348 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
349 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
350 mta_reg |= (1 << vector_bit);
351 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
353 vmolr |= IXGBE_VMOLR_ROMPE;
354 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
359 #ifdef CONFIG_PCI_IOV
360 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
362 struct ixgbe_hw *hw = &adapter->hw;
363 struct vf_data_storage *vfinfo;
369 for (i = 0; i < adapter->num_vfs; i++) {
370 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i));
371 vfinfo = &adapter->vfinfo[i];
372 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
373 hw->addr_ctrl.mta_in_use++;
374 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
375 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
376 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
377 mta_reg |= (1 << vector_bit);
378 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
381 if (vfinfo->num_vf_mc_hashes)
382 vmolr |= IXGBE_VMOLR_ROMPE;
384 vmolr &= ~IXGBE_VMOLR_ROMPE;
385 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr);
388 /* Restore any VF macvlans */
389 ixgbe_full_sync_mac_table(adapter);
393 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
396 /* VLAN 0 is a special case, don't allow it to be removed */
400 return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add);
403 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
405 struct ixgbe_hw *hw = &adapter->hw;
406 int max_frame = msgbuf[1];
410 * For 82599EB we have to keep all PFs and VFs operating with
411 * the same max_frame value in order to avoid sending an oversize
412 * frame to a VF. In order to guarantee this is handled correctly
413 * for all cases we have several special exceptions to take into
414 * account before we can enable the VF for receive
416 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
417 struct net_device *dev = adapter->netdev;
418 int pf_max_frame = dev->mtu + ETH_HLEN;
419 u32 reg_offset, vf_shift, vfre;
423 if (dev->features & NETIF_F_FCOE_MTU)
424 pf_max_frame = max_t(int, pf_max_frame,
425 IXGBE_FCOE_JUMBO_FRAME_SIZE);
427 #endif /* CONFIG_FCOE */
428 switch (adapter->vfinfo[vf].vf_api) {
429 case ixgbe_mbox_api_11:
431 * Version 1.1 supports jumbo frames on VFs if PF has
432 * jumbo frames enabled which means legacy VFs are
435 if (pf_max_frame > ETH_FRAME_LEN)
439 * If the PF or VF are running w/ jumbo frames enabled
440 * we need to shut down the VF Rx path as we cannot
441 * support jumbo frames on legacy VFs
443 if ((pf_max_frame > ETH_FRAME_LEN) ||
444 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
449 /* determine VF receive enable location */
451 reg_offset = vf / 32;
453 /* enable or disable receive depending on error */
454 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
456 vfre &= ~(1 << vf_shift);
458 vfre |= 1 << vf_shift;
459 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);
462 e_err(drv, "VF max_frame %d out of range\n", max_frame);
467 /* MTU < 68 is an error and causes problems on some kernels */
468 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
469 e_err(drv, "VF max_frame %d out of range\n", max_frame);
473 /* pull current max frame size from hardware */
474 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
475 max_frs &= IXGBE_MHADD_MFS_MASK;
476 max_frs >>= IXGBE_MHADD_MFS_SHIFT;
478 if (max_frs < max_frame) {
479 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
480 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
483 e_info(hw, "VF requests change max MTU to %d\n", max_frame);
488 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
490 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
491 vmolr |= IXGBE_VMOLR_BAM;
493 vmolr |= IXGBE_VMOLR_AUPE;
495 vmolr &= ~IXGBE_VMOLR_AUPE;
496 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
499 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
501 struct ixgbe_hw *hw = &adapter->hw;
503 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
505 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
507 struct ixgbe_hw *hw = &adapter->hw;
508 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
509 u8 num_tcs = netdev_get_num_tc(adapter->netdev);
511 /* add PF assigned VLAN or VLAN 0 */
512 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);
514 /* reset offloads to defaults */
515 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);
517 /* set outgoing tags for VFs */
518 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
519 ixgbe_clear_vmvir(adapter, vf);
521 if (vfinfo->pf_qos || !num_tcs)
522 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
525 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
526 adapter->default_up, vf);
528 if (vfinfo->spoofchk_enabled)
529 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
532 /* reset multicast table array for vf */
533 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
535 /* Flush and reset the mta with the new values */
536 ixgbe_set_rx_mode(adapter->netdev);
538 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
540 /* reset VF api back to unknown */
541 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;
544 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
545 int vf, unsigned char *mac_addr)
547 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
548 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, ETH_ALEN);
549 ixgbe_add_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
554 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
555 int vf, int index, unsigned char *mac_addr)
557 struct list_head *pos;
558 struct vf_macvlans *entry;
561 list_for_each(pos, &adapter->vf_mvs.l) {
562 entry = list_entry(pos, struct vf_macvlans, l);
563 if (entry->vf == vf) {
566 entry->is_macvlan = false;
567 ixgbe_del_mac_filter(adapter,
568 entry->vf_macvlan, vf);
574 * If index was zero then we were asked to clear the uc list
575 * for the VF. We're done.
582 list_for_each(pos, &adapter->vf_mvs.l) {
583 entry = list_entry(pos, struct vf_macvlans, l);
589 * If we traversed the entire list and didn't find a free entry
590 * then we're out of space on the RAR table. Also entry may
591 * be NULL because the original memory allocation for the list
592 * failed, which is not fatal but does mean we can't support
593 * VF requests for MACVLAN because we couldn't allocate
594 * memory for the list management required.
596 if (!entry || !entry->free)
600 entry->is_macvlan = true;
602 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
604 ixgbe_add_mac_filter(adapter, mac_addr, vf);
609 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
611 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
612 unsigned int vfn = (event_mask & 0x3f);
614 bool enable = ((event_mask & 0x10000000U) != 0);
617 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses);
622 static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf,
625 struct ixgbe_hw *hw = &adapter->hw;
626 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
627 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
630 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) {
633 /* flush previous write */
634 IXGBE_WRITE_FLUSH(hw);
636 /* indicate to hardware that we want to set drop enable */
637 reg = IXGBE_QDE_WRITE | IXGBE_QDE_ENABLE;
638 reg |= i << IXGBE_QDE_IDX_SHIFT;
639 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg);
643 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
645 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
646 struct ixgbe_hw *hw = &adapter->hw;
647 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
648 u32 reg, reg_offset, vf_shift;
649 u32 msgbuf[4] = {0, 0, 0, 0};
650 u8 *addr = (u8 *)(&msgbuf[1]);
651 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
654 e_info(probe, "VF Reset msg received from vf %d\n", vf);
656 /* reset the filters for the device */
657 ixgbe_vf_reset_event(adapter, vf);
659 /* set vf mac address */
660 if (!is_zero_ether_addr(vf_mac))
661 ixgbe_set_vf_mac(adapter, vf, vf_mac);
664 reg_offset = vf / 32;
666 /* enable transmit for vf */
667 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
668 reg |= 1 << vf_shift;
669 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg);
671 /* force drop enable for all VF Rx queues */
672 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
674 /* enable receive for vf */
675 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
676 reg |= 1 << vf_shift;
678 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.
679 * For more info take a look at ixgbe_set_vf_lpe
681 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
682 struct net_device *dev = adapter->netdev;
683 int pf_max_frame = dev->mtu + ETH_HLEN;
686 if (dev->features & NETIF_F_FCOE_MTU)
687 pf_max_frame = max_t(int, pf_max_frame,
688 IXGBE_FCOE_JUMBO_FRAME_SIZE);
690 #endif /* CONFIG_FCOE */
691 if (pf_max_frame > ETH_FRAME_LEN)
692 reg &= ~(1 << vf_shift);
694 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);
696 /* enable VF mailbox for further messages */
697 adapter->vfinfo[vf].clear_to_send = true;
699 /* Enable counting of spoofed packets in the SSVPC register */
700 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
701 reg |= (1 << vf_shift);
702 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
705 * Reset the VFs TDWBAL and TDWBAH registers
706 * which are not cleared by an FLR
708 for (i = 0; i < q_per_pool; i++) {
709 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0);
710 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0);
713 /* reply to reset with ack and vf mac address */
714 msgbuf[0] = IXGBE_VF_RESET;
715 if (!is_zero_ether_addr(vf_mac)) {
716 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
717 memcpy(addr, vf_mac, ETH_ALEN);
719 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
720 dev_warn(&adapter->pdev->dev,
721 "VF %d has no MAC address assigned, you may have to assign one manually\n",
726 * Piggyback the multicast filter type so VF can compute the
729 msgbuf[3] = hw->mac.mc_filter_type;
730 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
735 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
738 u8 *new_mac = ((u8 *)(&msgbuf[1]));
740 if (!is_valid_ether_addr(new_mac)) {
741 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
745 if (adapter->vfinfo[vf].pf_set_mac &&
746 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) {
748 "VF %d attempted to override administratively set MAC address\n"
749 "Reload the VF driver to resume operations\n",
754 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0;
757 static int ixgbe_find_vlvf_entry(struct ixgbe_hw *hw, u32 vlan)
762 /* short cut the special case */
766 /* Search for the vlan id in the VLVF entries */
767 for (regindex = 1; regindex < IXGBE_VLVF_ENTRIES; regindex++) {
768 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex));
769 if ((vlvf & VLAN_VID_MASK) == vlan)
773 /* Return a negative value if not found */
774 if (regindex >= IXGBE_VLVF_ENTRIES)
780 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
783 struct ixgbe_hw *hw = &adapter->hw;
784 int add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT;
785 int vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
790 u8 tcs = netdev_get_num_tc(adapter->netdev);
792 if (adapter->vfinfo[vf].pf_vlan || tcs) {
794 "VF %d attempted to override administratively set VLAN configuration\n"
795 "Reload the VF driver to resume operations\n",
801 adapter->vfinfo[vf].vlan_count++;
802 else if (adapter->vfinfo[vf].vlan_count)
803 adapter->vfinfo[vf].vlan_count--;
805 /* in case of promiscuous mode any VLAN filter set for a VF must
806 * also have the PF pool added to it.
808 if (add && adapter->netdev->flags & IFF_PROMISC)
809 err = ixgbe_set_vf_vlan(adapter, add, vid, VMDQ_P(0));
811 err = ixgbe_set_vf_vlan(adapter, add, vid, vf);
812 if (!err && adapter->vfinfo[vf].spoofchk_enabled)
813 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
815 /* Go through all the checks to see if the VLAN filter should
816 * be wiped completely.
818 if (!add && adapter->netdev->flags & IFF_PROMISC) {
819 reg_ndx = ixgbe_find_vlvf_entry(hw, vid);
822 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(reg_ndx));
823 /* See if any other pools are set for this VLAN filter
824 * entry other than the PF.
826 if (VMDQ_P(0) < 32) {
827 bits = IXGBE_READ_REG(hw, IXGBE_VLVFB(reg_ndx * 2));
828 bits &= ~(1 << VMDQ_P(0));
829 bits |= IXGBE_READ_REG(hw,
830 IXGBE_VLVFB(reg_ndx * 2) + 1);
832 bits = IXGBE_READ_REG(hw,
833 IXGBE_VLVFB(reg_ndx * 2) + 1);
834 bits &= ~(1 << (VMDQ_P(0) - 32));
835 bits |= IXGBE_READ_REG(hw, IXGBE_VLVFB(reg_ndx * 2));
838 /* If the filter was removed then ensure PF pool bit
839 * is cleared if the PF only added itself to the pool
840 * because the PF is in promiscuous mode.
842 if ((vlvf & VLAN_VID_MASK) == vid &&
843 !test_bit(vid, adapter->active_vlans) && !bits)
844 ixgbe_set_vf_vlan(adapter, add, vid, VMDQ_P(0));
850 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
853 u8 *new_mac = ((u8 *)(&msgbuf[1]));
854 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >>
855 IXGBE_VT_MSGINFO_SHIFT;
858 if (adapter->vfinfo[vf].pf_set_mac && index > 0) {
860 "VF %d requested MACVLAN filter but is administratively denied\n",
865 /* An non-zero index indicates the VF is setting a filter */
867 if (!is_valid_ether_addr(new_mac)) {
868 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
873 * If the VF is allowed to set MAC filters then turn off
874 * anti-spoofing to avoid false positives.
876 if (adapter->vfinfo[vf].spoofchk_enabled)
877 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, vf, false);
880 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
883 "VF %d has requested a MACVLAN filter but there is no space for it\n",
889 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
895 case ixgbe_mbox_api_10:
896 case ixgbe_mbox_api_11:
897 adapter->vfinfo[vf].vf_api = api;
903 e_info(drv, "VF %d requested invalid api version %u\n", vf, api);
908 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
911 struct net_device *dev = adapter->netdev;
912 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
913 unsigned int default_tc = 0;
914 u8 num_tcs = netdev_get_num_tc(dev);
916 /* verify the PF is supporting the correct APIs */
917 switch (adapter->vfinfo[vf].vf_api) {
918 case ixgbe_mbox_api_20:
919 case ixgbe_mbox_api_11:
925 /* only allow 1 Tx queue for bandwidth limiting */
926 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
927 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
929 /* if TCs > 1 determine which TC belongs to default user priority */
931 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
933 /* notify VF of need for VLAN tag stripping, and correct queue */
935 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
936 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
937 msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
939 msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
941 /* notify VF of default queue */
942 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
947 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
949 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
950 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
951 struct ixgbe_hw *hw = &adapter->hw;
954 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
957 pr_err("Error receiving message from VF\n");
961 /* this is a message we already processed, do nothing */
962 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
965 /* flush the ack before we write any messages back */
966 IXGBE_WRITE_FLUSH(hw);
968 if (msgbuf[0] == IXGBE_VF_RESET)
969 return ixgbe_vf_reset_msg(adapter, vf);
972 * until the vf completes a virtual function reset it should not be
973 * allowed to start any configuration.
975 if (!adapter->vfinfo[vf].clear_to_send) {
976 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
977 ixgbe_write_mbx(hw, msgbuf, 1, vf);
981 switch ((msgbuf[0] & 0xFFFF)) {
982 case IXGBE_VF_SET_MAC_ADDR:
983 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
985 case IXGBE_VF_SET_MULTICAST:
986 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
988 case IXGBE_VF_SET_VLAN:
989 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
991 case IXGBE_VF_SET_LPE:
992 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf);
994 case IXGBE_VF_SET_MACVLAN:
995 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
997 case IXGBE_VF_API_NEGOTIATE:
998 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
1000 case IXGBE_VF_GET_QUEUES:
1001 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
1004 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
1005 retval = IXGBE_ERR_MBX;
1009 /* notify the VF of the results of what it sent us */
1011 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1013 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
1015 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
1017 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);
1022 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1024 struct ixgbe_hw *hw = &adapter->hw;
1025 u32 msg = IXGBE_VT_MSGTYPE_NACK;
1027 /* if device isn't clear to send it shouldn't be reading either */
1028 if (!adapter->vfinfo[vf].clear_to_send)
1029 ixgbe_write_mbx(hw, &msg, 1, vf);
1032 void ixgbe_msg_task(struct ixgbe_adapter *adapter)
1034 struct ixgbe_hw *hw = &adapter->hw;
1037 for (vf = 0; vf < adapter->num_vfs; vf++) {
1038 /* process any reset requests */
1039 if (!ixgbe_check_for_rst(hw, vf))
1040 ixgbe_vf_reset_event(adapter, vf);
1042 /* process any messages pending */
1043 if (!ixgbe_check_for_msg(hw, vf))
1044 ixgbe_rcv_msg_from_vf(adapter, vf);
1046 /* process any acks */
1047 if (!ixgbe_check_for_ack(hw, vf))
1048 ixgbe_rcv_ack_from_vf(adapter, vf);
1052 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter)
1054 struct ixgbe_hw *hw = &adapter->hw;
1056 /* disable transmit and receive for all vfs */
1057 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0);
1058 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0);
1060 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0);
1061 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
1064 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
1066 struct ixgbe_hw *hw = &adapter->hw;
1070 for (i = 0 ; i < adapter->num_vfs; i++) {
1071 ping = IXGBE_PF_CONTROL_MSG;
1072 if (adapter->vfinfo[i].clear_to_send)
1073 ping |= IXGBE_VT_MSGTYPE_CTS;
1074 ixgbe_write_mbx(hw, &ping, 1, i);
1078 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1080 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1081 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs))
1083 adapter->vfinfo[vf].pf_set_mac = true;
1084 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf);
1085 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this"
1086 " change effective.");
1087 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1088 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set,"
1089 " but the PF device is not up.\n");
1090 dev_warn(&adapter->pdev->dev, "Bring the PF device up before"
1091 " attempting to use the VF device.\n");
1093 return ixgbe_set_vf_mac(adapter, vf, mac);
1096 static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf,
1099 struct ixgbe_hw *hw = &adapter->hw;
1102 if (adapter->vfinfo[vf].pf_vlan)
1103 err = ixgbe_set_vf_vlan(adapter, false,
1104 adapter->vfinfo[vf].pf_vlan,
1108 ixgbe_set_vmvir(adapter, vlan, qos, vf);
1109 ixgbe_set_vmolr(hw, vf, false);
1110 if (adapter->vfinfo[vf].spoofchk_enabled)
1111 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
1112 adapter->vfinfo[vf].vlan_count++;
1114 /* enable hide vlan on X550 */
1115 if (hw->mac.type >= ixgbe_mac_X550)
1116 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE |
1117 IXGBE_QDE_HIDE_VLAN);
1119 adapter->vfinfo[vf].pf_vlan = vlan;
1120 adapter->vfinfo[vf].pf_qos = qos;
1121 dev_info(&adapter->pdev->dev,
1122 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
1123 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1124 dev_warn(&adapter->pdev->dev,
1125 "The VF VLAN has been set, but the PF device is not up.\n");
1126 dev_warn(&adapter->pdev->dev,
1127 "Bring the PF device up before attempting to use the VF device.\n");
1134 static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf)
1136 struct ixgbe_hw *hw = &adapter->hw;
1139 err = ixgbe_set_vf_vlan(adapter, false,
1140 adapter->vfinfo[vf].pf_vlan, vf);
1141 ixgbe_clear_vmvir(adapter, vf);
1142 ixgbe_set_vmolr(hw, vf, true);
1143 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
1144 if (adapter->vfinfo[vf].vlan_count)
1145 adapter->vfinfo[vf].vlan_count--;
1146 adapter->vfinfo[vf].pf_vlan = 0;
1147 adapter->vfinfo[vf].pf_qos = 0;
1152 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos)
1155 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1157 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
1160 /* Check if there is already a port VLAN set, if so
1161 * we have to delete the old one first before we
1162 * can set the new one. The usage model had
1163 * previously assumed the user would delete the
1164 * old port VLAN before setting a new one but this
1165 * is not necessarily the case.
1167 if (adapter->vfinfo[vf].pf_vlan)
1168 err = ixgbe_disable_port_vlan(adapter, vf);
1171 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos);
1173 err = ixgbe_disable_port_vlan(adapter, vf);
1180 static int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
1182 switch (adapter->link_speed) {
1183 case IXGBE_LINK_SPEED_100_FULL:
1185 case IXGBE_LINK_SPEED_1GB_FULL:
1187 case IXGBE_LINK_SPEED_10GB_FULL:
1194 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
1196 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1197 struct ixgbe_hw *hw = &adapter->hw;
1199 u16 queue, queues_per_pool;
1200 u16 tx_rate = adapter->vfinfo[vf].tx_rate;
1203 /* start with base link speed value */
1204 bcnrc_val = adapter->vf_rate_link_speed;
1206 /* Calculate the rate factor values to set */
1207 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1208 bcnrc_val /= tx_rate;
1210 /* clear everything but the rate factor */
1211 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1212 IXGBE_RTTBCNRC_RF_DEC_MASK;
1214 /* enable the rate scheduler */
1215 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1219 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
1220 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
1221 * and 0x004 otherwise.
1223 switch (hw->mac.type) {
1224 case ixgbe_mac_82599EB:
1225 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
1227 case ixgbe_mac_X540:
1228 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
1234 /* determine how many queues per pool based on VMDq mask */
1235 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
1237 /* write value for all Tx queues belonging to VF */
1238 for (queue = 0; queue < queues_per_pool; queue++) {
1239 unsigned int reg_idx = (vf * queues_per_pool) + queue;
1241 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
1242 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1246 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
1250 /* VF Tx rate limit was not set */
1251 if (!adapter->vf_rate_link_speed)
1254 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
1255 adapter->vf_rate_link_speed = 0;
1256 dev_info(&adapter->pdev->dev,
1257 "Link speed has been changed. VF Transmit rate is disabled\n");
1260 for (i = 0; i < adapter->num_vfs; i++) {
1261 if (!adapter->vf_rate_link_speed)
1262 adapter->vfinfo[i].tx_rate = 0;
1264 ixgbe_set_vf_rate_limit(adapter, i);
1268 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate,
1271 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1274 /* verify VF is active */
1275 if (vf >= adapter->num_vfs)
1278 /* verify link is up */
1279 if (!adapter->link_up)
1282 /* verify we are linked at 10Gbps */
1283 link_speed = ixgbe_link_mbps(adapter);
1284 if (link_speed != 10000)
1290 /* rate limit cannot be less than 10Mbs or greater than link speed */
1291 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed)))
1295 adapter->vf_rate_link_speed = link_speed;
1296 adapter->vfinfo[vf].tx_rate = max_tx_rate;
1298 /* update hardware configuration */
1299 ixgbe_set_vf_rate_limit(adapter, vf);
1304 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1306 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1307 int vf_target_reg = vf >> 3;
1308 int vf_target_shift = vf % 8;
1309 struct ixgbe_hw *hw = &adapter->hw;
1312 if (vf >= adapter->num_vfs)
1315 adapter->vfinfo[vf].spoofchk_enabled = setting;
1317 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
1318 regval &= ~(1 << vf_target_shift);
1319 regval |= (setting << vf_target_shift);
1320 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);
1322 if (adapter->vfinfo[vf].vlan_count) {
1323 vf_target_shift += IXGBE_SPOOF_VLANAS_SHIFT;
1324 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
1325 regval &= ~(1 << vf_target_shift);
1326 regval |= (setting << vf_target_shift);
1327 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);
1333 int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1334 int vf, struct ifla_vf_info *ivi)
1336 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1337 if (vf >= adapter->num_vfs)
1340 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
1341 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate;
1342 ivi->min_tx_rate = 0;
1343 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1344 ivi->qos = adapter->vfinfo[vf].pf_qos;
1345 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;