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ixgbe: Add support for GET_QUEUES message to get DCB configuration
[linux-2.6/cjktty.git] / drivers / net / ethernet / intel / ixgbe / ixgbe_sriov.c
blob8bf467b94d124297fccc1332505d26a5edd30032
1 /*******************************************************************************
2
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2012 Intel Corporation.
5
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.
9
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
13 more details.
14
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.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Contact Information:
23 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25
26 *******************************************************************************/
27
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>
34 #include <linux/in.h>
35 #include <linux/ip.h>
36 #include <linux/tcp.h>
37 #include <linux/ipv6.h>
38 #ifdef NETIF_F_HW_VLAN_TX
39 #include <linux/if_vlan.h>
40 #endif
41
42 #include "ixgbe.h"
43 #include "ixgbe_type.h"
44 #include "ixgbe_sriov.h"
45
46 #ifdef CONFIG_PCI_IOV
47 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter,
48 const struct ixgbe_info *ii)
49 {
50 struct ixgbe_hw *hw = &adapter->hw;
51 int num_vf_macvlans, i;
52 struct vf_macvlans *mv_list;
53 int pre_existing_vfs = 0;
54
55 pre_existing_vfs = pci_num_vf(adapter->pdev);
56 if (!pre_existing_vfs && !adapter->num_vfs)
57 return;
58
59 /* If there are pre-existing VFs then we have to force
60 * use of that many because they were not deleted the last
61 * time someone removed the PF driver. That would have
62 * been because they were allocated to guest VMs and can't
63 * be removed. Go ahead and just re-enable the old amount.
64 * If the user wants to change the number of VFs they can
65 * use ethtool while making sure no VFs are allocated to
66 * guest VMs... i.e. the right way.
67 */
68 if (pre_existing_vfs) {
69 adapter->num_vfs = pre_existing_vfs;
70 dev_warn(&adapter->pdev->dev, "Virtual Functions already "
71 "enabled for this device - Please reload all "
72 "VF drivers to avoid spoofed packet errors\n");
73 } else {
74 int err;
75 /*
76 * The 82599 supports up to 64 VFs per physical function
77 * but this implementation limits allocation to 63 so that
78 * basic networking resources are still available to the
79 * physical function. If the user requests greater thn
80 * 63 VFs then it is an error - reset to default of zero.
81 */
82 adapter->num_vfs = min_t(unsigned int, adapter->num_vfs, 63);
83
84 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
85 if (err) {
86 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
87 adapter->num_vfs = 0;
88 return;
89 }
90 }
91
92 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED;
93 e_info(probe, "SR-IOV enabled with %d VFs\n", adapter->num_vfs);
94
95 /* Enable VMDq flag so device will be set in VM mode */
96 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED;
97 if (!adapter->ring_feature[RING_F_VMDQ].limit)
98 adapter->ring_feature[RING_F_VMDQ].limit = 1;
99 adapter->ring_feature[RING_F_VMDQ].offset = adapter->num_vfs;
100
101 num_vf_macvlans = hw->mac.num_rar_entries -
102 (IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs);
103
104 adapter->mv_list = mv_list = kcalloc(num_vf_macvlans,
105 sizeof(struct vf_macvlans),
106 GFP_KERNEL);
107 if (mv_list) {
108 /* Initialize list of VF macvlans */
109 INIT_LIST_HEAD(&adapter->vf_mvs.l);
110 for (i = 0; i < num_vf_macvlans; i++) {
111 mv_list->vf = -1;
112 mv_list->free = true;
113 mv_list->rar_entry = hw->mac.num_rar_entries -
114 (i + adapter->num_vfs + 1);
115 list_add(&mv_list->l, &adapter->vf_mvs.l);
116 mv_list++;
117 }
118 }
119
120 /* If call to enable VFs succeeded then allocate memory
121 * for per VF control structures.
122 */
123 adapter->vfinfo =
124 kcalloc(adapter->num_vfs,
125 sizeof(struct vf_data_storage), GFP_KERNEL);
126 if (adapter->vfinfo) {
127 /* Now that we're sure SR-IOV is enabled
128 * and memory allocated set up the mailbox parameters
129 */
130 ixgbe_init_mbx_params_pf(hw);
131 memcpy(&hw->mbx.ops, ii->mbx_ops, sizeof(hw->mbx.ops));
132
133 /* limit trafffic classes based on VFs enabled */
134 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) &&
135 (adapter->num_vfs < 16)) {
136 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
137 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
138 } else if (adapter->num_vfs < 32) {
139 adapter->dcb_cfg.num_tcs.pg_tcs = 4;
140 adapter->dcb_cfg.num_tcs.pfc_tcs = 4;
141 } else {
142 adapter->dcb_cfg.num_tcs.pg_tcs = 1;
143 adapter->dcb_cfg.num_tcs.pfc_tcs = 1;
144 }
145
146 /* We do not support RSS w/ SR-IOV */
147 adapter->ring_feature[RING_F_RSS].limit = 1;
148
149 /* Disable RSC when in SR-IOV mode */
150 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
151 IXGBE_FLAG2_RSC_ENABLED);
152
153 /* enable spoof checking for all VFs */
154 for (i = 0; i < adapter->num_vfs; i++)
155 adapter->vfinfo[i].spoofchk_enabled = true;
156 return;
157 }
158
159 /* Oh oh */
160 e_err(probe, "Unable to allocate memory for VF Data Storage - "
161 "SRIOV disabled\n");
162 ixgbe_disable_sriov(adapter);
163 }
164
165 static bool ixgbe_vfs_are_assigned(struct ixgbe_adapter *adapter)
166 {
167 struct pci_dev *pdev = adapter->pdev;
168 struct pci_dev *vfdev;
169 int dev_id;
170
171 switch (adapter->hw.mac.type) {
172 case ixgbe_mac_82599EB:
173 dev_id = IXGBE_DEV_ID_82599_VF;
174 break;
175 case ixgbe_mac_X540:
176 dev_id = IXGBE_DEV_ID_X540_VF;
177 break;
178 default:
179 return false;
180 }
181
182 /* loop through all the VFs to see if we own any that are assigned */
183 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, NULL);
184 while (vfdev) {
185 /* if we don't own it we don't care */
186 if (vfdev->is_virtfn && vfdev->physfn == pdev) {
187 /* if it is assigned we cannot release it */
188 if (vfdev->dev_flags & PCI_DEV_FLAGS_ASSIGNED)
189 return true;
190 }
191
192 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, vfdev);
193 }
194
195 return false;
196 }
197
198 #endif /* #ifdef CONFIG_PCI_IOV */
199 void ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
200 {
201 struct ixgbe_hw *hw = &adapter->hw;
202 u32 gpie;
203 u32 vmdctl;
204
205 /* set num VFs to 0 to prevent access to vfinfo */
206 adapter->num_vfs = 0;
207
208 /* free VF control structures */
209 kfree(adapter->vfinfo);
210 adapter->vfinfo = NULL;
211
212 /* free macvlan list */
213 kfree(adapter->mv_list);
214 adapter->mv_list = NULL;
215
216 /* if SR-IOV is already disabled then there is nothing to do */
217 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
218 return;
219
220 #ifdef CONFIG_PCI_IOV
221 /*
222 * If our VFs are assigned we cannot shut down SR-IOV
223 * without causing issues, so just leave the hardware
224 * available but disabled
225 */
226 if (ixgbe_vfs_are_assigned(adapter)) {
227 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n");
228 return;
229 }
230 /* disable iov and allow time for transactions to clear */
231 pci_disable_sriov(adapter->pdev);
232 #endif
233
234 /* turn off device IOV mode */
235 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 0);
236 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
237 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
238 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
239
240 /* set default pool back to 0 */
241 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
242 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
243 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
244 IXGBE_WRITE_FLUSH(hw);
245
246 /* Disable VMDq flag so device will be set in VM mode */
247 if (adapter->ring_feature[RING_F_VMDQ].limit == 1)
248 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
249 adapter->ring_feature[RING_F_VMDQ].offset = 0;
250
251 /* take a breather then clean up driver data */
252 msleep(100);
253
254 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
255 }
256
257 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
258 u32 *msgbuf, u32 vf)
259 {
260 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
261 >> IXGBE_VT_MSGINFO_SHIFT;
262 u16 *hash_list = (u16 *)&msgbuf[1];
263 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
264 struct ixgbe_hw *hw = &adapter->hw;
265 int i;
266 u32 vector_bit;
267 u32 vector_reg;
268 u32 mta_reg;
269
270 /* only so many hash values supported */
271 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
272
273 /*
274 * salt away the number of multi cast addresses assigned
275 * to this VF for later use to restore when the PF multi cast
276 * list changes
277 */
278 vfinfo->num_vf_mc_hashes = entries;
279
280 /*
281 * VFs are limited to using the MTA hash table for their multicast
282 * addresses
283 */
284 for (i = 0; i < entries; i++) {
285 vfinfo->vf_mc_hashes[i] = hash_list[i];
286 }
287
288 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
289 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
290 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
291 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
292 mta_reg |= (1 << vector_bit);
293 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
294 }
295
296 return 0;
297 }
298
299 static void ixgbe_restore_vf_macvlans(struct ixgbe_adapter *adapter)
300 {
301 struct ixgbe_hw *hw = &adapter->hw;
302 struct list_head *pos;
303 struct vf_macvlans *entry;
304
305 list_for_each(pos, &adapter->vf_mvs.l) {
306 entry = list_entry(pos, struct vf_macvlans, l);
307 if (!entry->free)
308 hw->mac.ops.set_rar(hw, entry->rar_entry,
309 entry->vf_macvlan,
310 entry->vf, IXGBE_RAH_AV);
311 }
312 }
313
314 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
315 {
316 struct ixgbe_hw *hw = &adapter->hw;
317 struct vf_data_storage *vfinfo;
318 int i, j;
319 u32 vector_bit;
320 u32 vector_reg;
321 u32 mta_reg;
322
323 for (i = 0; i < adapter->num_vfs; i++) {
324 vfinfo = &adapter->vfinfo[i];
325 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
326 hw->addr_ctrl.mta_in_use++;
327 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
328 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
329 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
330 mta_reg |= (1 << vector_bit);
331 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
332 }
333 }
334
335 /* Restore any VF macvlans */
336 ixgbe_restore_vf_macvlans(adapter);
337 }
338
339 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
340 u32 vf)
341 {
342 /* VLAN 0 is a special case, don't allow it to be removed */
343 if (!vid && !add)
344 return 0;
345
346 return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add);
347 }
348
349 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
350 {
351 struct ixgbe_hw *hw = &adapter->hw;
352 int max_frame = msgbuf[1];
353 u32 max_frs;
354
355 /*
356 * For 82599EB we have to keep all PFs and VFs operating with
357 * the same max_frame value in order to avoid sending an oversize
358 * frame to a VF. In order to guarantee this is handled correctly
359 * for all cases we have several special exceptions to take into
360 * account before we can enable the VF for receive
361 */
362 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
363 struct net_device *dev = adapter->netdev;
364 int pf_max_frame = dev->mtu + ETH_HLEN;
365 u32 reg_offset, vf_shift, vfre;
366 s32 err = 0;
367
368 #ifdef CONFIG_FCOE
369 if (dev->features & NETIF_F_FCOE_MTU)
370 pf_max_frame = max_t(int, pf_max_frame,
371 IXGBE_FCOE_JUMBO_FRAME_SIZE);
372
373 #endif /* CONFIG_FCOE */
374 /*
375 * If the PF or VF are running w/ jumbo frames enabled we
376 * need to shut down the VF Rx path as we cannot support
377 * jumbo frames on legacy VFs
378 */
379 if ((pf_max_frame > ETH_FRAME_LEN) ||
380 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
381 err = -EINVAL;
382
383 /* determine VF receive enable location */
384 vf_shift = vf % 32;
385 reg_offset = vf / 32;
386
387 /* enable or disable receive depending on error */
388 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
389 if (err)
390 vfre &= ~(1 << vf_shift);
391 else
392 vfre |= 1 << vf_shift;
393 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);
394
395 if (err) {
396 e_err(drv, "VF max_frame %d out of range\n", max_frame);
397 return err;
398 }
399 }
400
401 /* MTU < 68 is an error and causes problems on some kernels */
402 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
403 e_err(drv, "VF max_frame %d out of range\n", max_frame);
404 return -EINVAL;
405 }
406
407 /* pull current max frame size from hardware */
408 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
409 max_frs &= IXGBE_MHADD_MFS_MASK;
410 max_frs >>= IXGBE_MHADD_MFS_SHIFT;
411
412 if (max_frs < max_frame) {
413 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
414 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
415 }
416
417 e_info(hw, "VF requests change max MTU to %d\n", max_frame);
418
419 return 0;
420 }
421
422 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
423 {
424 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
425 vmolr |= (IXGBE_VMOLR_ROMPE |
426 IXGBE_VMOLR_BAM);
427 if (aupe)
428 vmolr |= IXGBE_VMOLR_AUPE;
429 else
430 vmolr &= ~IXGBE_VMOLR_AUPE;
431 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
432 }
433
434 static void ixgbe_set_vmvir(struct ixgbe_adapter *adapter,
435 u16 vid, u16 qos, u32 vf)
436 {
437 struct ixgbe_hw *hw = &adapter->hw;
438 u32 vmvir = vid | (qos << VLAN_PRIO_SHIFT) | IXGBE_VMVIR_VLANA_DEFAULT;
439
440 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), vmvir);
441 }
442
443 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
444 {
445 struct ixgbe_hw *hw = &adapter->hw;
446
447 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
448 }
449 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
450 {
451 struct ixgbe_hw *hw = &adapter->hw;
452 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
453 int rar_entry = hw->mac.num_rar_entries - (vf + 1);
454 u8 num_tcs = netdev_get_num_tc(adapter->netdev);
455
456 /* add PF assigned VLAN or VLAN 0 */
457 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);
458
459 /* reset offloads to defaults */
460 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);
461
462 /* set outgoing tags for VFs */
463 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
464 ixgbe_clear_vmvir(adapter, vf);
465 } else {
466 if (vfinfo->pf_qos || !num_tcs)
467 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
468 vfinfo->pf_qos, vf);
469 else
470 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
471 adapter->default_up, vf);
472
473 if (vfinfo->spoofchk_enabled)
474 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
475 }
476
477 /* reset multicast table array for vf */
478 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
479
480 /* Flush and reset the mta with the new values */
481 ixgbe_set_rx_mode(adapter->netdev);
482
483 hw->mac.ops.clear_rar(hw, rar_entry);
484
485 /* reset VF api back to unknown */
486 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;
487 }
488
489 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
490 int vf, unsigned char *mac_addr)
491 {
492 struct ixgbe_hw *hw = &adapter->hw;
493 int rar_entry = hw->mac.num_rar_entries - (vf + 1);
494
495 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, 6);
496 hw->mac.ops.set_rar(hw, rar_entry, mac_addr, vf, IXGBE_RAH_AV);
497
498 return 0;
499 }
500
501 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
502 int vf, int index, unsigned char *mac_addr)
503 {
504 struct ixgbe_hw *hw = &adapter->hw;
505 struct list_head *pos;
506 struct vf_macvlans *entry;
507
508 if (index <= 1) {
509 list_for_each(pos, &adapter->vf_mvs.l) {
510 entry = list_entry(pos, struct vf_macvlans, l);
511 if (entry->vf == vf) {
512 entry->vf = -1;
513 entry->free = true;
514 entry->is_macvlan = false;
515 hw->mac.ops.clear_rar(hw, entry->rar_entry);
516 }
517 }
518 }
519
520 /*
521 * If index was zero then we were asked to clear the uc list
522 * for the VF. We're done.
523 */
524 if (!index)
525 return 0;
526
527 entry = NULL;
528
529 list_for_each(pos, &adapter->vf_mvs.l) {
530 entry = list_entry(pos, struct vf_macvlans, l);
531 if (entry->free)
532 break;
533 }
534
535 /*
536 * If we traversed the entire list and didn't find a free entry
537 * then we're out of space on the RAR table. Also entry may
538 * be NULL because the original memory allocation for the list
539 * failed, which is not fatal but does mean we can't support
540 * VF requests for MACVLAN because we couldn't allocate
541 * memory for the list management required.
542 */
543 if (!entry || !entry->free)
544 return -ENOSPC;
545
546 entry->free = false;
547 entry->is_macvlan = true;
548 entry->vf = vf;
549 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
550
551 hw->mac.ops.set_rar(hw, entry->rar_entry, mac_addr, vf, IXGBE_RAH_AV);
552
553 return 0;
554 }
555
556 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
557 {
558 unsigned char vf_mac_addr[6];
559 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
560 unsigned int vfn = (event_mask & 0x3f);
561
562 bool enable = ((event_mask & 0x10000000U) != 0);
563
564 if (enable) {
565 eth_random_addr(vf_mac_addr);
566 e_info(probe, "IOV: VF %d is enabled MAC %pM\n",
567 vfn, vf_mac_addr);
568 /*
569 * Store away the VF "permananet" MAC address, it will ask
570 * for it later.
571 */
572 memcpy(adapter->vfinfo[vfn].vf_mac_addresses, vf_mac_addr, 6);
573 }
574
575 return 0;
576 }
577
578 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
579 {
580 struct ixgbe_hw *hw = &adapter->hw;
581 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
582 u32 reg, msgbuf[4];
583 u32 reg_offset, vf_shift;
584 u8 *addr = (u8 *)(&msgbuf[1]);
585
586 e_info(probe, "VF Reset msg received from vf %d\n", vf);
587
588 /* reset the filters for the device */
589 ixgbe_vf_reset_event(adapter, vf);
590
591 /* set vf mac address */
592 ixgbe_set_vf_mac(adapter, vf, vf_mac);
593
594 vf_shift = vf % 32;
595 reg_offset = vf / 32;
596
597 /* enable transmit for vf */
598 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
599 reg |= 1 << vf_shift;
600 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg);
601
602 /* enable receive for vf */
603 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
604 reg |= 1 << vf_shift;
605 /*
606 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.
607 * For more info take a look at ixgbe_set_vf_lpe
608 */
609 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
610 struct net_device *dev = adapter->netdev;
611 int pf_max_frame = dev->mtu + ETH_HLEN;
612
613 #ifdef CONFIG_FCOE
614 if (dev->features & NETIF_F_FCOE_MTU)
615 pf_max_frame = max_t(int, pf_max_frame,
616 IXGBE_FCOE_JUMBO_FRAME_SIZE);
617
618 #endif /* CONFIG_FCOE */
619 if (pf_max_frame > ETH_FRAME_LEN)
620 reg &= ~(1 << vf_shift);
621 }
622 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);
623
624 /* enable VF mailbox for further messages */
625 adapter->vfinfo[vf].clear_to_send = true;
626
627 /* Enable counting of spoofed packets in the SSVPC register */
628 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
629 reg |= (1 << vf_shift);
630 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
631
632 /* reply to reset with ack and vf mac address */
633 msgbuf[0] = IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK;
634 memcpy(addr, vf_mac, ETH_ALEN);
635
636 /*
637 * Piggyback the multicast filter type so VF can compute the
638 * correct vectors
639 */
640 msgbuf[3] = hw->mac.mc_filter_type;
641 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
642
643 return 0;
644 }
645
646 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
647 u32 *msgbuf, u32 vf)
648 {
649 u8 *new_mac = ((u8 *)(&msgbuf[1]));
650
651 if (!is_valid_ether_addr(new_mac)) {
652 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
653 return -1;
654 }
655
656 if (adapter->vfinfo[vf].pf_set_mac &&
657 memcmp(adapter->vfinfo[vf].vf_mac_addresses, new_mac,
658 ETH_ALEN)) {
659 e_warn(drv,
660 "VF %d attempted to override administratively set MAC address\n"
661 "Reload the VF driver to resume operations\n",
662 vf);
663 return -1;
664 }
665
666 return ixgbe_set_vf_mac(adapter, vf, new_mac);
667 }
668
669 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
670 u32 *msgbuf, u32 vf)
671 {
672 struct ixgbe_hw *hw = &adapter->hw;
673 int add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT;
674 int vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
675 int err;
676 u8 tcs = netdev_get_num_tc(adapter->netdev);
677
678 if (adapter->vfinfo[vf].pf_vlan || tcs) {
679 e_warn(drv,
680 "VF %d attempted to override administratively set VLAN configuration\n"
681 "Reload the VF driver to resume operations\n",
682 vf);
683 return -1;
684 }
685
686 if (add)
687 adapter->vfinfo[vf].vlan_count++;
688 else if (adapter->vfinfo[vf].vlan_count)
689 adapter->vfinfo[vf].vlan_count--;
690
691 err = ixgbe_set_vf_vlan(adapter, add, vid, vf);
692 if (!err && adapter->vfinfo[vf].spoofchk_enabled)
693 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
694
695 return err;
696 }
697
698 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
699 u32 *msgbuf, u32 vf)
700 {
701 u8 *new_mac = ((u8 *)(&msgbuf[1]));
702 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >>
703 IXGBE_VT_MSGINFO_SHIFT;
704 int err;
705
706 if (adapter->vfinfo[vf].pf_set_mac && index > 0) {
707 e_warn(drv,
708 "VF %d requested MACVLAN filter but is administratively denied\n",
709 vf);
710 return -1;
711 }
712
713 /* An non-zero index indicates the VF is setting a filter */
714 if (index) {
715 if (!is_valid_ether_addr(new_mac)) {
716 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
717 return -1;
718 }
719
720 /*
721 * If the VF is allowed to set MAC filters then turn off
722 * anti-spoofing to avoid false positives.
723 */
724 if (adapter->vfinfo[vf].spoofchk_enabled)
725 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, vf, false);
726 }
727
728 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
729 if (err == -ENOSPC)
730 e_warn(drv,
731 "VF %d has requested a MACVLAN filter but there is no space for it\n",
732 vf);
733 return err;
734 }
735
736 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
737 u32 *msgbuf, u32 vf)
738 {
739 int api = msgbuf[1];
740
741 switch (api) {
742 case ixgbe_mbox_api_10:
743 adapter->vfinfo[vf].vf_api = api;
744 return 0;
745 default:
746 break;
747 }
748
749 e_info(drv, "VF %d requested invalid api version %u\n", vf, api);
750
751 return -1;
752 }
753
754 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
755 u32 *msgbuf, u32 vf)
756 {
757 struct net_device *dev = adapter->netdev;
758 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
759 unsigned int default_tc = 0;
760 u8 num_tcs = netdev_get_num_tc(dev);
761
762 /* verify the PF is supporting the correct APIs */
763 switch (adapter->vfinfo[vf].vf_api) {
764 case ixgbe_mbox_api_20:
765 case ixgbe_mbox_api_11:
766 break;
767 default:
768 return -1;
769 }
770
771 /* only allow 1 Tx queue for bandwidth limiting */
772 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
773 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
774
775 /* if TCs > 1 determine which TC belongs to default user priority */
776 if (num_tcs > 1)
777 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
778
779 /* notify VF of need for VLAN tag stripping, and correct queue */
780 if (num_tcs)
781 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
782 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
783 msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
784 else
785 msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
786
787 /* notify VF of default queue */
788 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
789
790 return 0;
791 }
792
793 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
794 {
795 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
796 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
797 struct ixgbe_hw *hw = &adapter->hw;
798 s32 retval;
799
800 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
801
802 if (retval) {
803 pr_err("Error receiving message from VF\n");
804 return retval;
805 }
806
807 /* this is a message we already processed, do nothing */
808 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
809 return retval;
810
811 /* flush the ack before we write any messages back */
812 IXGBE_WRITE_FLUSH(hw);
813
814 if (msgbuf[0] == IXGBE_VF_RESET)
815 return ixgbe_vf_reset_msg(adapter, vf);
816
817 /*
818 * until the vf completes a virtual function reset it should not be
819 * allowed to start any configuration.
820 */
821 if (!adapter->vfinfo[vf].clear_to_send) {
822 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
823 ixgbe_write_mbx(hw, msgbuf, 1, vf);
824 return retval;
825 }
826
827 switch ((msgbuf[0] & 0xFFFF)) {
828 case IXGBE_VF_SET_MAC_ADDR:
829 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
830 break;
831 case IXGBE_VF_SET_MULTICAST:
832 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
833 break;
834 case IXGBE_VF_SET_VLAN:
835 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
836 break;
837 case IXGBE_VF_SET_LPE:
838 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf);
839 break;
840 case IXGBE_VF_SET_MACVLAN:
841 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
842 break;
843 case IXGBE_VF_API_NEGOTIATE:
844 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
845 break;
846 case IXGBE_VF_GET_QUEUES:
847 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
848 break;
849 default:
850 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
851 retval = IXGBE_ERR_MBX;
852 break;
853 }
854
855 /* notify the VF of the results of what it sent us */
856 if (retval)
857 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
858 else
859 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
860
861 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
862
863 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);
864
865 return retval;
866 }
867
868 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
869 {
870 struct ixgbe_hw *hw = &adapter->hw;
871 u32 msg = IXGBE_VT_MSGTYPE_NACK;
872
873 /* if device isn't clear to send it shouldn't be reading either */
874 if (!adapter->vfinfo[vf].clear_to_send)
875 ixgbe_write_mbx(hw, &msg, 1, vf);
876 }
877
878 void ixgbe_msg_task(struct ixgbe_adapter *adapter)
879 {
880 struct ixgbe_hw *hw = &adapter->hw;
881 u32 vf;
882
883 for (vf = 0; vf < adapter->num_vfs; vf++) {
884 /* process any reset requests */
885 if (!ixgbe_check_for_rst(hw, vf))
886 ixgbe_vf_reset_event(adapter, vf);
887
888 /* process any messages pending */
889 if (!ixgbe_check_for_msg(hw, vf))
890 ixgbe_rcv_msg_from_vf(adapter, vf);
891
892 /* process any acks */
893 if (!ixgbe_check_for_ack(hw, vf))
894 ixgbe_rcv_ack_from_vf(adapter, vf);
895 }
896 }
897
898 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter)
899 {
900 struct ixgbe_hw *hw = &adapter->hw;
901
902 /* disable transmit and receive for all vfs */
903 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0);
904 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0);
905
906 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0);
907 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
908 }
909
910 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
911 {
912 struct ixgbe_hw *hw = &adapter->hw;
913 u32 ping;
914 int i;
915
916 for (i = 0 ; i < adapter->num_vfs; i++) {
917 ping = IXGBE_PF_CONTROL_MSG;
918 if (adapter->vfinfo[i].clear_to_send)
919 ping |= IXGBE_VT_MSGTYPE_CTS;
920 ixgbe_write_mbx(hw, &ping, 1, i);
921 }
922 }
923
924 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
925 {
926 struct ixgbe_adapter *adapter = netdev_priv(netdev);
927 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs))
928 return -EINVAL;
929 adapter->vfinfo[vf].pf_set_mac = true;
930 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf);
931 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this"
932 " change effective.");
933 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
934 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set,"
935 " but the PF device is not up.\n");
936 dev_warn(&adapter->pdev->dev, "Bring the PF device up before"
937 " attempting to use the VF device.\n");
938 }
939 return ixgbe_set_vf_mac(adapter, vf, mac);
940 }
941
942 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos)
943 {
944 int err = 0;
945 struct ixgbe_adapter *adapter = netdev_priv(netdev);
946 struct ixgbe_hw *hw = &adapter->hw;
947
948 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
949 return -EINVAL;
950 if (vlan || qos) {
951 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
952 if (err)
953 goto out;
954 ixgbe_set_vmvir(adapter, vlan, qos, vf);
955 ixgbe_set_vmolr(hw, vf, false);
956 if (adapter->vfinfo[vf].spoofchk_enabled)
957 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
958 adapter->vfinfo[vf].vlan_count++;
959 adapter->vfinfo[vf].pf_vlan = vlan;
960 adapter->vfinfo[vf].pf_qos = qos;
961 dev_info(&adapter->pdev->dev,
962 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
963 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
964 dev_warn(&adapter->pdev->dev,
965 "The VF VLAN has been set,"
966 " but the PF device is not up.\n");
967 dev_warn(&adapter->pdev->dev,
968 "Bring the PF device up before"
969 " attempting to use the VF device.\n");
970 }
971 } else {
972 err = ixgbe_set_vf_vlan(adapter, false,
973 adapter->vfinfo[vf].pf_vlan, vf);
974 ixgbe_clear_vmvir(adapter, vf);
975 ixgbe_set_vmolr(hw, vf, true);
976 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
977 if (adapter->vfinfo[vf].vlan_count)
978 adapter->vfinfo[vf].vlan_count--;
979 adapter->vfinfo[vf].pf_vlan = 0;
980 adapter->vfinfo[vf].pf_qos = 0;
981 }
982 out:
983 return err;
984 }
985
986 static int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
987 {
988 switch (adapter->link_speed) {
989 case IXGBE_LINK_SPEED_100_FULL:
990 return 100;
991 case IXGBE_LINK_SPEED_1GB_FULL:
992 return 1000;
993 case IXGBE_LINK_SPEED_10GB_FULL:
994 return 10000;
995 default:
996 return 0;
997 }
998 }
999
1000 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
1001 {
1002 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1003 struct ixgbe_hw *hw = &adapter->hw;
1004 u32 bcnrc_val = 0;
1005 u16 queue, queues_per_pool;
1006 u16 tx_rate = adapter->vfinfo[vf].tx_rate;
1007
1008 if (tx_rate) {
1009 /* start with base link speed value */
1010 bcnrc_val = adapter->vf_rate_link_speed;
1011
1012 /* Calculate the rate factor values to set */
1013 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1014 bcnrc_val /= tx_rate;
1015
1016 /* clear everything but the rate factor */
1017 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1018 IXGBE_RTTBCNRC_RF_DEC_MASK;
1019
1020 /* enable the rate scheduler */
1021 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1022 }
1023
1024 /*
1025 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
1026 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
1027 * and 0x004 otherwise.
1028 */
1029 switch (hw->mac.type) {
1030 case ixgbe_mac_82599EB:
1031 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
1032 break;
1033 case ixgbe_mac_X540:
1034 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
1035 break;
1036 default:
1037 break;
1038 }
1039
1040 /* determine how many queues per pool based on VMDq mask */
1041 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
1042
1043 /* write value for all Tx queues belonging to VF */
1044 for (queue = 0; queue < queues_per_pool; queue++) {
1045 unsigned int reg_idx = (vf * queues_per_pool) + queue;
1046
1047 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
1048 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1049 }
1050 }
1051
1052 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
1053 {
1054 int i;
1055
1056 /* VF Tx rate limit was not set */
1057 if (!adapter->vf_rate_link_speed)
1058 return;
1059
1060 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
1061 adapter->vf_rate_link_speed = 0;
1062 dev_info(&adapter->pdev->dev,
1063 "Link speed has been changed. VF Transmit rate is disabled\n");
1064 }
1065
1066 for (i = 0; i < adapter->num_vfs; i++) {
1067 if (!adapter->vf_rate_link_speed)
1068 adapter->vfinfo[i].tx_rate = 0;
1069
1070 ixgbe_set_vf_rate_limit(adapter, i);
1071 }
1072 }
1073
1074 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate)
1075 {
1076 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1077 int link_speed;
1078
1079 /* verify VF is active */
1080 if (vf >= adapter->num_vfs)
1081 return -EINVAL;
1082
1083 /* verify link is up */
1084 if (!adapter->link_up)
1085 return -EINVAL;
1086
1087 /* verify we are linked at 10Gbps */
1088 link_speed = ixgbe_link_mbps(adapter);
1089 if (link_speed != 10000)
1090 return -EINVAL;
1091
1092 /* rate limit cannot be less than 10Mbs or greater than link speed */
1093 if (tx_rate && ((tx_rate <= 10) || (tx_rate > link_speed)))
1094 return -EINVAL;
1095
1096 /* store values */
1097 adapter->vf_rate_link_speed = link_speed;
1098 adapter->vfinfo[vf].tx_rate = tx_rate;
1099
1100 /* update hardware configuration */
1101 ixgbe_set_vf_rate_limit(adapter, vf);
1102
1103 return 0;
1104 }
1105
1106 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1107 {
1108 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1109 int vf_target_reg = vf >> 3;
1110 int vf_target_shift = vf % 8;
1111 struct ixgbe_hw *hw = &adapter->hw;
1112 u32 regval;
1113
1114 adapter->vfinfo[vf].spoofchk_enabled = setting;
1115
1116 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
1117 regval &= ~(1 << vf_target_shift);
1118 regval |= (setting << vf_target_shift);
1119 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);
1120
1121 if (adapter->vfinfo[vf].vlan_count) {
1122 vf_target_shift += IXGBE_SPOOF_VLANAS_SHIFT;
1123 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
1124 regval &= ~(1 << vf_target_shift);
1125 regval |= (setting << vf_target_shift);
1126 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);
1127 }
1128
1129 return 0;
1130 }
1131
1132 int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1133 int vf, struct ifla_vf_info *ivi)
1134 {
1135 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1136 if (vf >= adapter->num_vfs)
1137 return -EINVAL;
1138 ivi->vf = vf;
1139 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
1140 ivi->tx_rate = adapter->vfinfo[vf].tx_rate;
1141 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1142 ivi->qos = adapter->vfinfo[vf].pf_qos;
1143 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;
1144 return 0;
1145 }
CJK support for tty framebuffer vt