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1// SPDX-License-Identifier: GPL-2.0
2/* Copyright(c) 2013 - 2019 Intel Corporation. */
3
4#include <linux/bitfield.h>
5#include "fm10k_vf.h"
6
7/**
8 * fm10k_stop_hw_vf - Stop Tx/Rx units
9 * @hw: pointer to hardware structure
10 *
11 **/
12static s32 fm10k_stop_hw_vf(struct fm10k_hw *hw)
13{
14 u8 *perm_addr = hw->mac.perm_addr;
15 u32 bal = 0, bah = 0, tdlen;
16 s32 err;
17 u16 i;
18
19 /* we need to disable the queues before taking further steps */
20 err = fm10k_stop_hw_generic(hw);
21 if (err && err != FM10K_ERR_REQUESTS_PENDING)
22 return err;
23
24 /* If permanent address is set then we need to restore it */
25 if (is_valid_ether_addr(perm_addr)) {
26 bal = (((u32)perm_addr[3]) << 24) |
27 (((u32)perm_addr[4]) << 16) |
28 (((u32)perm_addr[5]) << 8);
29 bah = (((u32)0xFF) << 24) |
30 (((u32)perm_addr[0]) << 16) |
31 (((u32)perm_addr[1]) << 8) |
32 ((u32)perm_addr[2]);
33 }
34
35 /* restore default itr_scale for next VF initialization */
36 tdlen = hw->mac.itr_scale << FM10K_TDLEN_ITR_SCALE_SHIFT;
37
38 /* The queues have already been disabled so we just need to
39 * update their base address registers
40 */
41 for (i = 0; i < hw->mac.max_queues; i++) {
42 fm10k_write_reg(hw, FM10K_TDBAL(i), bal);
43 fm10k_write_reg(hw, FM10K_TDBAH(i), bah);
44 fm10k_write_reg(hw, FM10K_RDBAL(i), bal);
45 fm10k_write_reg(hw, FM10K_RDBAH(i), bah);
46 /* Restore ITR scale in software-defined mechanism in TDLEN
47 * for next VF initialization. See definition of
48 * FM10K_TDLEN_ITR_SCALE_SHIFT for more details on the use of
49 * TDLEN here.
50 */
51 fm10k_write_reg(hw, FM10K_TDLEN(i), tdlen);
52 }
53
54 return err;
55}
56
57/**
58 * fm10k_reset_hw_vf - VF hardware reset
59 * @hw: pointer to hardware structure
60 *
61 * This function should return the hardware to a state similar to the
62 * one it is in after just being initialized.
63 **/
64static s32 fm10k_reset_hw_vf(struct fm10k_hw *hw)
65{
66 s32 err;
67
68 /* shut down queues we own and reset DMA configuration */
69 err = fm10k_stop_hw_vf(hw);
70 if (err == FM10K_ERR_REQUESTS_PENDING)
71 hw->mac.reset_while_pending++;
72 else if (err)
73 return err;
74
75 /* Inititate VF reset */
76 fm10k_write_reg(hw, FM10K_VFCTRL, FM10K_VFCTRL_RST);
77
78 /* Flush write and allow 100us for reset to complete */
79 fm10k_write_flush(hw);
80 udelay(FM10K_RESET_TIMEOUT);
81
82 /* Clear reset bit and verify it was cleared */
83 fm10k_write_reg(hw, FM10K_VFCTRL, 0);
84 if (fm10k_read_reg(hw, FM10K_VFCTRL) & FM10K_VFCTRL_RST)
85 return FM10K_ERR_RESET_FAILED;
86
87 return 0;
88}
89
90/**
91 * fm10k_init_hw_vf - VF hardware initialization
92 * @hw: pointer to hardware structure
93 *
94 **/
95static s32 fm10k_init_hw_vf(struct fm10k_hw *hw)
96{
97 u32 tqdloc, tqdloc0 = ~fm10k_read_reg(hw, FM10K_TQDLOC(0));
98 s32 err;
99 u16 i;
100
101 /* verify we have at least 1 queue */
102 if (!~fm10k_read_reg(hw, FM10K_TXQCTL(0)) ||
103 !~fm10k_read_reg(hw, FM10K_RXQCTL(0))) {
104 err = FM10K_ERR_NO_RESOURCES;
105 goto reset_max_queues;
106 }
107
108 /* determine how many queues we have */
109 for (i = 1; tqdloc0 && (i < FM10K_MAX_QUEUES_POOL); i++) {
110 /* verify the Descriptor cache offsets are increasing */
111 tqdloc = ~fm10k_read_reg(hw, FM10K_TQDLOC(i));
112 if (!tqdloc || (tqdloc == tqdloc0))
113 break;
114
115 /* check to verify the PF doesn't own any of our queues */
116 if (!~fm10k_read_reg(hw, FM10K_TXQCTL(i)) ||
117 !~fm10k_read_reg(hw, FM10K_RXQCTL(i)))
118 break;
119 }
120
121 /* shut down queues we own and reset DMA configuration */
122 err = fm10k_disable_queues_generic(hw, i);
123 if (err)
124 goto reset_max_queues;
125
126 /* record maximum queue count */
127 hw->mac.max_queues = i;
128
129 /* fetch default VLAN and ITR scale */
130 hw->mac.default_vid = FIELD_GET(FM10K_TXQCTL_VID_MASK,
131 fm10k_read_reg(hw, FM10K_TXQCTL(0)));
132 /* Read the ITR scale from TDLEN. See the definition of
133 * FM10K_TDLEN_ITR_SCALE_SHIFT for more information about how TDLEN is
134 * used here.
135 */
136 hw->mac.itr_scale = FIELD_GET(FM10K_TDLEN_ITR_SCALE_MASK,
137 fm10k_read_reg(hw, FM10K_TDLEN(0)));
138
139 return 0;
140
141reset_max_queues:
142 hw->mac.max_queues = 0;
143
144 return err;
145}
146
147/* This structure defines the attibutes to be parsed below */
148const struct fm10k_tlv_attr fm10k_mac_vlan_msg_attr[] = {
149 FM10K_TLV_ATTR_U32(FM10K_MAC_VLAN_MSG_VLAN),
150 FM10K_TLV_ATTR_BOOL(FM10K_MAC_VLAN_MSG_SET),
151 FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_MAC),
152 FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_DEFAULT_MAC),
153 FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_MULTICAST),
154 FM10K_TLV_ATTR_LAST
155};
156
157/**
158 * fm10k_update_vlan_vf - Update status of VLAN ID in VLAN filter table
159 * @hw: pointer to hardware structure
160 * @vid: VLAN ID to add to table
161 * @vsi: Reserved, should always be 0
162 * @set: Indicates if this is a set or clear operation
163 *
164 * This function adds or removes the corresponding VLAN ID from the VLAN
165 * filter table for this VF.
166 **/
167static s32 fm10k_update_vlan_vf(struct fm10k_hw *hw, u32 vid, u8 vsi, bool set)
168{
169 struct fm10k_mbx_info *mbx = &hw->mbx;
170 u32 msg[4];
171
172 /* verify the index is not set */
173 if (vsi)
174 return FM10K_ERR_PARAM;
175
176 /* clever trick to verify reserved bits in both vid and length */
177 if ((vid << 16 | vid) >> 28)
178 return FM10K_ERR_PARAM;
179
180 /* encode set bit into the VLAN ID */
181 if (!set)
182 vid |= FM10K_VLAN_CLEAR;
183
184 /* generate VLAN request */
185 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN);
186 fm10k_tlv_attr_put_u32(msg, FM10K_MAC_VLAN_MSG_VLAN, vid);
187
188 /* load onto outgoing mailbox */
189 return mbx->ops.enqueue_tx(hw, mbx, msg);
190}
191
192/**
193 * fm10k_msg_mac_vlan_vf - Read device MAC address from mailbox message
194 * @hw: pointer to the HW structure
195 * @results: Attributes for message
196 * @mbx: unused mailbox data
197 *
198 * This function should determine the MAC address for the VF
199 **/
200s32 fm10k_msg_mac_vlan_vf(struct fm10k_hw *hw, u32 **results,
201 struct fm10k_mbx_info __always_unused *mbx)
202{
203 u8 perm_addr[ETH_ALEN];
204 u16 vid;
205 s32 err;
206
207 /* record MAC address requested */
208 err = fm10k_tlv_attr_get_mac_vlan(
209 results[FM10K_MAC_VLAN_MSG_DEFAULT_MAC],
210 perm_addr, &vid);
211 if (err)
212 return err;
213
214 ether_addr_copy(hw->mac.perm_addr, perm_addr);
215 hw->mac.default_vid = vid & (FM10K_VLAN_TABLE_VID_MAX - 1);
216 hw->mac.vlan_override = !!(vid & FM10K_VLAN_OVERRIDE);
217
218 return 0;
219}
220
221/**
222 * fm10k_read_mac_addr_vf - Read device MAC address
223 * @hw: pointer to the HW structure
224 *
225 * This function should determine the MAC address for the VF
226 **/
227static s32 fm10k_read_mac_addr_vf(struct fm10k_hw *hw)
228{
229 u8 perm_addr[ETH_ALEN];
230 u32 base_addr;
231
232 base_addr = fm10k_read_reg(hw, FM10K_TDBAL(0));
233
234 /* last byte should be 0 */
235 if (base_addr << 24)
236 return FM10K_ERR_INVALID_MAC_ADDR;
237
238 perm_addr[3] = (u8)(base_addr >> 24);
239 perm_addr[4] = (u8)(base_addr >> 16);
240 perm_addr[5] = (u8)(base_addr >> 8);
241
242 base_addr = fm10k_read_reg(hw, FM10K_TDBAH(0));
243
244 /* first byte should be all 1's */
245 if ((~base_addr) >> 24)
246 return FM10K_ERR_INVALID_MAC_ADDR;
247
248 perm_addr[0] = (u8)(base_addr >> 16);
249 perm_addr[1] = (u8)(base_addr >> 8);
250 perm_addr[2] = (u8)(base_addr);
251
252 ether_addr_copy(hw->mac.perm_addr, perm_addr);
253 ether_addr_copy(hw->mac.addr, perm_addr);
254
255 return 0;
256}
257
258/**
259 * fm10k_update_uc_addr_vf - Update device unicast addresses
260 * @hw: pointer to the HW structure
261 * @glort: unused
262 * @mac: MAC address to add/remove from table
263 * @vid: VLAN ID to add/remove from table
264 * @add: Indicates if this is an add or remove operation
265 * @flags: flags field to indicate add and secure - unused
266 *
267 * This function is used to add or remove unicast MAC addresses for
268 * the VF.
269 **/
270static s32 fm10k_update_uc_addr_vf(struct fm10k_hw *hw,
271 u16 __always_unused glort,
272 const u8 *mac, u16 vid, bool add,
273 u8 __always_unused flags)
274{
275 struct fm10k_mbx_info *mbx = &hw->mbx;
276 u32 msg[7];
277
278 /* verify VLAN ID is valid */
279 if (vid >= FM10K_VLAN_TABLE_VID_MAX)
280 return FM10K_ERR_PARAM;
281
282 /* verify MAC address is valid */
283 if (!is_valid_ether_addr(mac))
284 return FM10K_ERR_PARAM;
285
286 /* verify we are not locked down on the MAC address */
287 if (is_valid_ether_addr(hw->mac.perm_addr) &&
288 !ether_addr_equal(hw->mac.perm_addr, mac))
289 return FM10K_ERR_PARAM;
290
291 /* add bit to notify us if this is a set or clear operation */
292 if (!add)
293 vid |= FM10K_VLAN_CLEAR;
294
295 /* generate VLAN request */
296 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN);
297 fm10k_tlv_attr_put_mac_vlan(msg, FM10K_MAC_VLAN_MSG_MAC, mac, vid);
298
299 /* load onto outgoing mailbox */
300 return mbx->ops.enqueue_tx(hw, mbx, msg);
301}
302
303/**
304 * fm10k_update_mc_addr_vf - Update device multicast addresses
305 * @hw: pointer to the HW structure
306 * @glort: unused
307 * @mac: MAC address to add/remove from table
308 * @vid: VLAN ID to add/remove from table
309 * @add: Indicates if this is an add or remove operation
310 *
311 * This function is used to add or remove multicast MAC addresses for
312 * the VF.
313 **/
314static s32 fm10k_update_mc_addr_vf(struct fm10k_hw *hw,
315 u16 __always_unused glort,
316 const u8 *mac, u16 vid, bool add)
317{
318 struct fm10k_mbx_info *mbx = &hw->mbx;
319 u32 msg[7];
320
321 /* verify VLAN ID is valid */
322 if (vid >= FM10K_VLAN_TABLE_VID_MAX)
323 return FM10K_ERR_PARAM;
324
325 /* verify multicast address is valid */
326 if (!is_multicast_ether_addr(mac))
327 return FM10K_ERR_PARAM;
328
329 /* add bit to notify us if this is a set or clear operation */
330 if (!add)
331 vid |= FM10K_VLAN_CLEAR;
332
333 /* generate VLAN request */
334 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN);
335 fm10k_tlv_attr_put_mac_vlan(msg, FM10K_MAC_VLAN_MSG_MULTICAST,
336 mac, vid);
337
338 /* load onto outgoing mailbox */
339 return mbx->ops.enqueue_tx(hw, mbx, msg);
340}
341
342/**
343 * fm10k_update_int_moderator_vf - Request update of interrupt moderator list
344 * @hw: pointer to hardware structure
345 *
346 * This function will issue a request to the PF to rescan our MSI-X table
347 * and to update the interrupt moderator linked list.
348 **/
349static void fm10k_update_int_moderator_vf(struct fm10k_hw *hw)
350{
351 struct fm10k_mbx_info *mbx = &hw->mbx;
352 u32 msg[1];
353
354 /* generate MSI-X request */
355 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MSIX);
356
357 /* load onto outgoing mailbox */
358 mbx->ops.enqueue_tx(hw, mbx, msg);
359}
360
361/* This structure defines the attibutes to be parsed below */
362const struct fm10k_tlv_attr fm10k_lport_state_msg_attr[] = {
363 FM10K_TLV_ATTR_BOOL(FM10K_LPORT_STATE_MSG_DISABLE),
364 FM10K_TLV_ATTR_U8(FM10K_LPORT_STATE_MSG_XCAST_MODE),
365 FM10K_TLV_ATTR_BOOL(FM10K_LPORT_STATE_MSG_READY),
366 FM10K_TLV_ATTR_LAST
367};
368
369/**
370 * fm10k_msg_lport_state_vf - Message handler for lport_state message from PF
371 * @hw: Pointer to hardware structure
372 * @results: pointer array containing parsed data
373 * @mbx: Pointer to mailbox information structure
374 *
375 * This handler is meant to capture the indication from the PF that we
376 * are ready to bring up the interface.
377 **/
378s32 fm10k_msg_lport_state_vf(struct fm10k_hw *hw, u32 **results,
379 struct fm10k_mbx_info __always_unused *mbx)
380{
381 hw->mac.dglort_map = !results[FM10K_LPORT_STATE_MSG_READY] ?
382 FM10K_DGLORTMAP_NONE : FM10K_DGLORTMAP_ZERO;
383
384 return 0;
385}
386
387/**
388 * fm10k_update_lport_state_vf - Update device state in lower device
389 * @hw: pointer to the HW structure
390 * @glort: unused
391 * @count: number of logical ports to enable - unused (always 1)
392 * @enable: boolean value indicating if this is an enable or disable request
393 *
394 * Notify the lower device of a state change. If the lower device is
395 * enabled we can add filters, if it is disabled all filters for this
396 * logical port are flushed.
397 **/
398static s32 fm10k_update_lport_state_vf(struct fm10k_hw *hw,
399 u16 __always_unused glort,
400 u16 __always_unused count, bool enable)
401{
402 struct fm10k_mbx_info *mbx = &hw->mbx;
403 u32 msg[2];
404
405 /* reset glort mask 0 as we have to wait to be enabled */
406 hw->mac.dglort_map = FM10K_DGLORTMAP_NONE;
407
408 /* generate port state request */
409 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_LPORT_STATE);
410 if (!enable)
411 fm10k_tlv_attr_put_bool(msg, FM10K_LPORT_STATE_MSG_DISABLE);
412
413 /* load onto outgoing mailbox */
414 return mbx->ops.enqueue_tx(hw, mbx, msg);
415}
416
417/**
418 * fm10k_update_xcast_mode_vf - Request update of multicast mode
419 * @hw: pointer to hardware structure
420 * @glort: unused
421 * @mode: integer value indicating mode being requested
422 *
423 * This function will attempt to request a higher mode for the port
424 * so that it can enable either multicast, multicast promiscuous, or
425 * promiscuous mode of operation.
426 **/
427static s32 fm10k_update_xcast_mode_vf(struct fm10k_hw *hw,
428 u16 __always_unused glort, u8 mode)
429{
430 struct fm10k_mbx_info *mbx = &hw->mbx;
431 u32 msg[3];
432
433 if (mode > FM10K_XCAST_MODE_NONE)
434 return FM10K_ERR_PARAM;
435
436 /* generate message requesting to change xcast mode */
437 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_LPORT_STATE);
438 fm10k_tlv_attr_put_u8(msg, FM10K_LPORT_STATE_MSG_XCAST_MODE, mode);
439
440 /* load onto outgoing mailbox */
441 return mbx->ops.enqueue_tx(hw, mbx, msg);
442}
443
444/**
445 * fm10k_update_hw_stats_vf - Updates hardware related statistics of VF
446 * @hw: pointer to hardware structure
447 * @stats: pointer to statistics structure
448 *
449 * This function collects and aggregates per queue hardware statistics.
450 **/
451static void fm10k_update_hw_stats_vf(struct fm10k_hw *hw,
452 struct fm10k_hw_stats *stats)
453{
454 fm10k_update_hw_stats_q(hw, stats->q, 0, hw->mac.max_queues);
455}
456
457/**
458 * fm10k_rebind_hw_stats_vf - Resets base for hardware statistics of VF
459 * @hw: pointer to hardware structure
460 * @stats: pointer to the stats structure to update
461 *
462 * This function resets the base for queue hardware statistics.
463 **/
464static void fm10k_rebind_hw_stats_vf(struct fm10k_hw *hw,
465 struct fm10k_hw_stats *stats)
466{
467 /* Unbind Queue Statistics */
468 fm10k_unbind_hw_stats_q(stats->q, 0, hw->mac.max_queues);
469
470 /* Reinitialize bases for all stats */
471 fm10k_update_hw_stats_vf(hw, stats);
472}
473
474/**
475 * fm10k_configure_dglort_map_vf - Configures GLORT entry and queues
476 * @hw: pointer to hardware structure
477 * @dglort: pointer to dglort configuration structure
478 *
479 * Reads the configuration structure contained in dglort_cfg and uses
480 * that information to then populate a DGLORTMAP/DEC entry and the queues
481 * to which it has been assigned.
482 **/
483static s32 fm10k_configure_dglort_map_vf(struct fm10k_hw __always_unused *hw,
484 struct fm10k_dglort_cfg *dglort)
485{
486 /* verify the dglort pointer */
487 if (!dglort)
488 return FM10K_ERR_PARAM;
489
490 /* stub for now until we determine correct message for this */
491
492 return 0;
493}
494
495static const struct fm10k_msg_data fm10k_msg_data_vf[] = {
496 FM10K_TLV_MSG_TEST_HANDLER(fm10k_tlv_msg_test),
497 FM10K_VF_MSG_MAC_VLAN_HANDLER(fm10k_msg_mac_vlan_vf),
498 FM10K_VF_MSG_LPORT_STATE_HANDLER(fm10k_msg_lport_state_vf),
499 FM10K_TLV_MSG_ERROR_HANDLER(fm10k_tlv_msg_error),
500};
501
502static const struct fm10k_mac_ops mac_ops_vf = {
503 .get_bus_info = fm10k_get_bus_info_generic,
504 .reset_hw = fm10k_reset_hw_vf,
505 .init_hw = fm10k_init_hw_vf,
506 .start_hw = fm10k_start_hw_generic,
507 .stop_hw = fm10k_stop_hw_vf,
508 .update_vlan = fm10k_update_vlan_vf,
509 .read_mac_addr = fm10k_read_mac_addr_vf,
510 .update_uc_addr = fm10k_update_uc_addr_vf,
511 .update_mc_addr = fm10k_update_mc_addr_vf,
512 .update_xcast_mode = fm10k_update_xcast_mode_vf,
513 .update_int_moderator = fm10k_update_int_moderator_vf,
514 .update_lport_state = fm10k_update_lport_state_vf,
515 .update_hw_stats = fm10k_update_hw_stats_vf,
516 .rebind_hw_stats = fm10k_rebind_hw_stats_vf,
517 .configure_dglort_map = fm10k_configure_dglort_map_vf,
518 .get_host_state = fm10k_get_host_state_generic,
519};
520
521static s32 fm10k_get_invariants_vf(struct fm10k_hw *hw)
522{
523 fm10k_get_invariants_generic(hw);
524
525 return fm10k_pfvf_mbx_init(hw, &hw->mbx, fm10k_msg_data_vf, 0);
526}
527
528const struct fm10k_info fm10k_vf_info = {
529 .mac = fm10k_mac_vf,
530 .get_invariants = fm10k_get_invariants_vf,
531 .mac_ops = &mac_ops_vf,
532};
1// SPDX-License-Identifier: GPL-2.0
2/* Intel(R) Ethernet Switch Host Interface Driver
3 * Copyright(c) 2013 - 2016 Intel Corporation.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * The full GNU General Public License is included in this distribution in
15 * the file called "COPYING".
16 *
17 * Contact Information:
18 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
19 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
20 */
21
22#include "fm10k_vf.h"
23
24/**
25 * fm10k_stop_hw_vf - Stop Tx/Rx units
26 * @hw: pointer to hardware structure
27 *
28 **/
29static s32 fm10k_stop_hw_vf(struct fm10k_hw *hw)
30{
31 u8 *perm_addr = hw->mac.perm_addr;
32 u32 bal = 0, bah = 0, tdlen;
33 s32 err;
34 u16 i;
35
36 /* we need to disable the queues before taking further steps */
37 err = fm10k_stop_hw_generic(hw);
38 if (err && err != FM10K_ERR_REQUESTS_PENDING)
39 return err;
40
41 /* If permanent address is set then we need to restore it */
42 if (is_valid_ether_addr(perm_addr)) {
43 bal = (((u32)perm_addr[3]) << 24) |
44 (((u32)perm_addr[4]) << 16) |
45 (((u32)perm_addr[5]) << 8);
46 bah = (((u32)0xFF) << 24) |
47 (((u32)perm_addr[0]) << 16) |
48 (((u32)perm_addr[1]) << 8) |
49 ((u32)perm_addr[2]);
50 }
51
52 /* restore default itr_scale for next VF initialization */
53 tdlen = hw->mac.itr_scale << FM10K_TDLEN_ITR_SCALE_SHIFT;
54
55 /* The queues have already been disabled so we just need to
56 * update their base address registers
57 */
58 for (i = 0; i < hw->mac.max_queues; i++) {
59 fm10k_write_reg(hw, FM10K_TDBAL(i), bal);
60 fm10k_write_reg(hw, FM10K_TDBAH(i), bah);
61 fm10k_write_reg(hw, FM10K_RDBAL(i), bal);
62 fm10k_write_reg(hw, FM10K_RDBAH(i), bah);
63 /* Restore ITR scale in software-defined mechanism in TDLEN
64 * for next VF initialization. See definition of
65 * FM10K_TDLEN_ITR_SCALE_SHIFT for more details on the use of
66 * TDLEN here.
67 */
68 fm10k_write_reg(hw, FM10K_TDLEN(i), tdlen);
69 }
70
71 return err;
72}
73
74/**
75 * fm10k_reset_hw_vf - VF hardware reset
76 * @hw: pointer to hardware structure
77 *
78 * This function should return the hardware to a state similar to the
79 * one it is in after just being initialized.
80 **/
81static s32 fm10k_reset_hw_vf(struct fm10k_hw *hw)
82{
83 s32 err;
84
85 /* shut down queues we own and reset DMA configuration */
86 err = fm10k_stop_hw_vf(hw);
87 if (err == FM10K_ERR_REQUESTS_PENDING)
88 hw->mac.reset_while_pending++;
89 else if (err)
90 return err;
91
92 /* Inititate VF reset */
93 fm10k_write_reg(hw, FM10K_VFCTRL, FM10K_VFCTRL_RST);
94
95 /* Flush write and allow 100us for reset to complete */
96 fm10k_write_flush(hw);
97 udelay(FM10K_RESET_TIMEOUT);
98
99 /* Clear reset bit and verify it was cleared */
100 fm10k_write_reg(hw, FM10K_VFCTRL, 0);
101 if (fm10k_read_reg(hw, FM10K_VFCTRL) & FM10K_VFCTRL_RST)
102 return FM10K_ERR_RESET_FAILED;
103
104 return 0;
105}
106
107/**
108 * fm10k_init_hw_vf - VF hardware initialization
109 * @hw: pointer to hardware structure
110 *
111 **/
112static s32 fm10k_init_hw_vf(struct fm10k_hw *hw)
113{
114 u32 tqdloc, tqdloc0 = ~fm10k_read_reg(hw, FM10K_TQDLOC(0));
115 s32 err;
116 u16 i;
117
118 /* verify we have at least 1 queue */
119 if (!~fm10k_read_reg(hw, FM10K_TXQCTL(0)) ||
120 !~fm10k_read_reg(hw, FM10K_RXQCTL(0))) {
121 err = FM10K_ERR_NO_RESOURCES;
122 goto reset_max_queues;
123 }
124
125 /* determine how many queues we have */
126 for (i = 1; tqdloc0 && (i < FM10K_MAX_QUEUES_POOL); i++) {
127 /* verify the Descriptor cache offsets are increasing */
128 tqdloc = ~fm10k_read_reg(hw, FM10K_TQDLOC(i));
129 if (!tqdloc || (tqdloc == tqdloc0))
130 break;
131
132 /* check to verify the PF doesn't own any of our queues */
133 if (!~fm10k_read_reg(hw, FM10K_TXQCTL(i)) ||
134 !~fm10k_read_reg(hw, FM10K_RXQCTL(i)))
135 break;
136 }
137
138 /* shut down queues we own and reset DMA configuration */
139 err = fm10k_disable_queues_generic(hw, i);
140 if (err)
141 goto reset_max_queues;
142
143 /* record maximum queue count */
144 hw->mac.max_queues = i;
145
146 /* fetch default VLAN and ITR scale */
147 hw->mac.default_vid = (fm10k_read_reg(hw, FM10K_TXQCTL(0)) &
148 FM10K_TXQCTL_VID_MASK) >> FM10K_TXQCTL_VID_SHIFT;
149 /* Read the ITR scale from TDLEN. See the definition of
150 * FM10K_TDLEN_ITR_SCALE_SHIFT for more information about how TDLEN is
151 * used here.
152 */
153 hw->mac.itr_scale = (fm10k_read_reg(hw, FM10K_TDLEN(0)) &
154 FM10K_TDLEN_ITR_SCALE_MASK) >>
155 FM10K_TDLEN_ITR_SCALE_SHIFT;
156
157 return 0;
158
159reset_max_queues:
160 hw->mac.max_queues = 0;
161
162 return err;
163}
164
165/* This structure defines the attibutes to be parsed below */
166const struct fm10k_tlv_attr fm10k_mac_vlan_msg_attr[] = {
167 FM10K_TLV_ATTR_U32(FM10K_MAC_VLAN_MSG_VLAN),
168 FM10K_TLV_ATTR_BOOL(FM10K_MAC_VLAN_MSG_SET),
169 FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_MAC),
170 FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_DEFAULT_MAC),
171 FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_MULTICAST),
172 FM10K_TLV_ATTR_LAST
173};
174
175/**
176 * fm10k_update_vlan_vf - Update status of VLAN ID in VLAN filter table
177 * @hw: pointer to hardware structure
178 * @vid: VLAN ID to add to table
179 * @vsi: Reserved, should always be 0
180 * @set: Indicates if this is a set or clear operation
181 *
182 * This function adds or removes the corresponding VLAN ID from the VLAN
183 * filter table for this VF.
184 **/
185static s32 fm10k_update_vlan_vf(struct fm10k_hw *hw, u32 vid, u8 vsi, bool set)
186{
187 struct fm10k_mbx_info *mbx = &hw->mbx;
188 u32 msg[4];
189
190 /* verify the index is not set */
191 if (vsi)
192 return FM10K_ERR_PARAM;
193
194 /* clever trick to verify reserved bits in both vid and length */
195 if ((vid << 16 | vid) >> 28)
196 return FM10K_ERR_PARAM;
197
198 /* encode set bit into the VLAN ID */
199 if (!set)
200 vid |= FM10K_VLAN_CLEAR;
201
202 /* generate VLAN request */
203 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN);
204 fm10k_tlv_attr_put_u32(msg, FM10K_MAC_VLAN_MSG_VLAN, vid);
205
206 /* load onto outgoing mailbox */
207 return mbx->ops.enqueue_tx(hw, mbx, msg);
208}
209
210/**
211 * fm10k_msg_mac_vlan_vf - Read device MAC address from mailbox message
212 * @hw: pointer to the HW structure
213 * @results: Attributes for message
214 * @mbx: unused mailbox data
215 *
216 * This function should determine the MAC address for the VF
217 **/
218s32 fm10k_msg_mac_vlan_vf(struct fm10k_hw *hw, u32 **results,
219 struct fm10k_mbx_info *mbx)
220{
221 u8 perm_addr[ETH_ALEN];
222 u16 vid;
223 s32 err;
224
225 /* record MAC address requested */
226 err = fm10k_tlv_attr_get_mac_vlan(
227 results[FM10K_MAC_VLAN_MSG_DEFAULT_MAC],
228 perm_addr, &vid);
229 if (err)
230 return err;
231
232 ether_addr_copy(hw->mac.perm_addr, perm_addr);
233 hw->mac.default_vid = vid & (FM10K_VLAN_TABLE_VID_MAX - 1);
234 hw->mac.vlan_override = !!(vid & FM10K_VLAN_OVERRIDE);
235
236 return 0;
237}
238
239/**
240 * fm10k_read_mac_addr_vf - Read device MAC address
241 * @hw: pointer to the HW structure
242 *
243 * This function should determine the MAC address for the VF
244 **/
245static s32 fm10k_read_mac_addr_vf(struct fm10k_hw *hw)
246{
247 u8 perm_addr[ETH_ALEN];
248 u32 base_addr;
249
250 base_addr = fm10k_read_reg(hw, FM10K_TDBAL(0));
251
252 /* last byte should be 0 */
253 if (base_addr << 24)
254 return FM10K_ERR_INVALID_MAC_ADDR;
255
256 perm_addr[3] = (u8)(base_addr >> 24);
257 perm_addr[4] = (u8)(base_addr >> 16);
258 perm_addr[5] = (u8)(base_addr >> 8);
259
260 base_addr = fm10k_read_reg(hw, FM10K_TDBAH(0));
261
262 /* first byte should be all 1's */
263 if ((~base_addr) >> 24)
264 return FM10K_ERR_INVALID_MAC_ADDR;
265
266 perm_addr[0] = (u8)(base_addr >> 16);
267 perm_addr[1] = (u8)(base_addr >> 8);
268 perm_addr[2] = (u8)(base_addr);
269
270 ether_addr_copy(hw->mac.perm_addr, perm_addr);
271 ether_addr_copy(hw->mac.addr, perm_addr);
272
273 return 0;
274}
275
276/**
277 * fm10k_update_uc_addr_vf - Update device unicast addresses
278 * @hw: pointer to the HW structure
279 * @glort: unused
280 * @mac: MAC address to add/remove from table
281 * @vid: VLAN ID to add/remove from table
282 * @add: Indicates if this is an add or remove operation
283 * @flags: flags field to indicate add and secure - unused
284 *
285 * This function is used to add or remove unicast MAC addresses for
286 * the VF.
287 **/
288static s32 fm10k_update_uc_addr_vf(struct fm10k_hw *hw, u16 glort,
289 const u8 *mac, u16 vid, bool add, u8 flags)
290{
291 struct fm10k_mbx_info *mbx = &hw->mbx;
292 u32 msg[7];
293
294 /* verify VLAN ID is valid */
295 if (vid >= FM10K_VLAN_TABLE_VID_MAX)
296 return FM10K_ERR_PARAM;
297
298 /* verify MAC address is valid */
299 if (!is_valid_ether_addr(mac))
300 return FM10K_ERR_PARAM;
301
302 /* verify we are not locked down on the MAC address */
303 if (is_valid_ether_addr(hw->mac.perm_addr) &&
304 !ether_addr_equal(hw->mac.perm_addr, mac))
305 return FM10K_ERR_PARAM;
306
307 /* add bit to notify us if this is a set or clear operation */
308 if (!add)
309 vid |= FM10K_VLAN_CLEAR;
310
311 /* generate VLAN request */
312 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN);
313 fm10k_tlv_attr_put_mac_vlan(msg, FM10K_MAC_VLAN_MSG_MAC, mac, vid);
314
315 /* load onto outgoing mailbox */
316 return mbx->ops.enqueue_tx(hw, mbx, msg);
317}
318
319/**
320 * fm10k_update_mc_addr_vf - Update device multicast addresses
321 * @hw: pointer to the HW structure
322 * @glort: unused
323 * @mac: MAC address to add/remove from table
324 * @vid: VLAN ID to add/remove from table
325 * @add: Indicates if this is an add or remove operation
326 *
327 * This function is used to add or remove multicast MAC addresses for
328 * the VF.
329 **/
330static s32 fm10k_update_mc_addr_vf(struct fm10k_hw *hw, u16 glort,
331 const u8 *mac, u16 vid, bool add)
332{
333 struct fm10k_mbx_info *mbx = &hw->mbx;
334 u32 msg[7];
335
336 /* verify VLAN ID is valid */
337 if (vid >= FM10K_VLAN_TABLE_VID_MAX)
338 return FM10K_ERR_PARAM;
339
340 /* verify multicast address is valid */
341 if (!is_multicast_ether_addr(mac))
342 return FM10K_ERR_PARAM;
343
344 /* add bit to notify us if this is a set or clear operation */
345 if (!add)
346 vid |= FM10K_VLAN_CLEAR;
347
348 /* generate VLAN request */
349 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN);
350 fm10k_tlv_attr_put_mac_vlan(msg, FM10K_MAC_VLAN_MSG_MULTICAST,
351 mac, vid);
352
353 /* load onto outgoing mailbox */
354 return mbx->ops.enqueue_tx(hw, mbx, msg);
355}
356
357/**
358 * fm10k_update_int_moderator_vf - Request update of interrupt moderator list
359 * @hw: pointer to hardware structure
360 *
361 * This function will issue a request to the PF to rescan our MSI-X table
362 * and to update the interrupt moderator linked list.
363 **/
364static void fm10k_update_int_moderator_vf(struct fm10k_hw *hw)
365{
366 struct fm10k_mbx_info *mbx = &hw->mbx;
367 u32 msg[1];
368
369 /* generate MSI-X request */
370 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MSIX);
371
372 /* load onto outgoing mailbox */
373 mbx->ops.enqueue_tx(hw, mbx, msg);
374}
375
376/* This structure defines the attibutes to be parsed below */
377const struct fm10k_tlv_attr fm10k_lport_state_msg_attr[] = {
378 FM10K_TLV_ATTR_BOOL(FM10K_LPORT_STATE_MSG_DISABLE),
379 FM10K_TLV_ATTR_U8(FM10K_LPORT_STATE_MSG_XCAST_MODE),
380 FM10K_TLV_ATTR_BOOL(FM10K_LPORT_STATE_MSG_READY),
381 FM10K_TLV_ATTR_LAST
382};
383
384/**
385 * fm10k_msg_lport_state_vf - Message handler for lport_state message from PF
386 * @hw: Pointer to hardware structure
387 * @results: pointer array containing parsed data
388 * @mbx: Pointer to mailbox information structure
389 *
390 * This handler is meant to capture the indication from the PF that we
391 * are ready to bring up the interface.
392 **/
393s32 fm10k_msg_lport_state_vf(struct fm10k_hw *hw, u32 **results,
394 struct fm10k_mbx_info *mbx)
395{
396 hw->mac.dglort_map = !results[FM10K_LPORT_STATE_MSG_READY] ?
397 FM10K_DGLORTMAP_NONE : FM10K_DGLORTMAP_ZERO;
398
399 return 0;
400}
401
402/**
403 * fm10k_update_lport_state_vf - Update device state in lower device
404 * @hw: pointer to the HW structure
405 * @glort: unused
406 * @count: number of logical ports to enable - unused (always 1)
407 * @enable: boolean value indicating if this is an enable or disable request
408 *
409 * Notify the lower device of a state change. If the lower device is
410 * enabled we can add filters, if it is disabled all filters for this
411 * logical port are flushed.
412 **/
413static s32 fm10k_update_lport_state_vf(struct fm10k_hw *hw, u16 glort,
414 u16 count, bool enable)
415{
416 struct fm10k_mbx_info *mbx = &hw->mbx;
417 u32 msg[2];
418
419 /* reset glort mask 0 as we have to wait to be enabled */
420 hw->mac.dglort_map = FM10K_DGLORTMAP_NONE;
421
422 /* generate port state request */
423 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_LPORT_STATE);
424 if (!enable)
425 fm10k_tlv_attr_put_bool(msg, FM10K_LPORT_STATE_MSG_DISABLE);
426
427 /* load onto outgoing mailbox */
428 return mbx->ops.enqueue_tx(hw, mbx, msg);
429}
430
431/**
432 * fm10k_update_xcast_mode_vf - Request update of multicast mode
433 * @hw: pointer to hardware structure
434 * @glort: unused
435 * @mode: integer value indicating mode being requested
436 *
437 * This function will attempt to request a higher mode for the port
438 * so that it can enable either multicast, multicast promiscuous, or
439 * promiscuous mode of operation.
440 **/
441static s32 fm10k_update_xcast_mode_vf(struct fm10k_hw *hw, u16 glort, u8 mode)
442{
443 struct fm10k_mbx_info *mbx = &hw->mbx;
444 u32 msg[3];
445
446 if (mode > FM10K_XCAST_MODE_NONE)
447 return FM10K_ERR_PARAM;
448
449 /* generate message requesting to change xcast mode */
450 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_LPORT_STATE);
451 fm10k_tlv_attr_put_u8(msg, FM10K_LPORT_STATE_MSG_XCAST_MODE, mode);
452
453 /* load onto outgoing mailbox */
454 return mbx->ops.enqueue_tx(hw, mbx, msg);
455}
456
457/**
458 * fm10k_update_hw_stats_vf - Updates hardware related statistics of VF
459 * @hw: pointer to hardware structure
460 * @stats: pointer to statistics structure
461 *
462 * This function collects and aggregates per queue hardware statistics.
463 **/
464static void fm10k_update_hw_stats_vf(struct fm10k_hw *hw,
465 struct fm10k_hw_stats *stats)
466{
467 fm10k_update_hw_stats_q(hw, stats->q, 0, hw->mac.max_queues);
468}
469
470/**
471 * fm10k_rebind_hw_stats_vf - Resets base for hardware statistics of VF
472 * @hw: pointer to hardware structure
473 * @stats: pointer to the stats structure to update
474 *
475 * This function resets the base for queue hardware statistics.
476 **/
477static void fm10k_rebind_hw_stats_vf(struct fm10k_hw *hw,
478 struct fm10k_hw_stats *stats)
479{
480 /* Unbind Queue Statistics */
481 fm10k_unbind_hw_stats_q(stats->q, 0, hw->mac.max_queues);
482
483 /* Reinitialize bases for all stats */
484 fm10k_update_hw_stats_vf(hw, stats);
485}
486
487/**
488 * fm10k_configure_dglort_map_vf - Configures GLORT entry and queues
489 * @hw: pointer to hardware structure
490 * @dglort: pointer to dglort configuration structure
491 *
492 * Reads the configuration structure contained in dglort_cfg and uses
493 * that information to then populate a DGLORTMAP/DEC entry and the queues
494 * to which it has been assigned.
495 **/
496static s32 fm10k_configure_dglort_map_vf(struct fm10k_hw *hw,
497 struct fm10k_dglort_cfg *dglort)
498{
499 /* verify the dglort pointer */
500 if (!dglort)
501 return FM10K_ERR_PARAM;
502
503 /* stub for now until we determine correct message for this */
504
505 return 0;
506}
507
508static const struct fm10k_msg_data fm10k_msg_data_vf[] = {
509 FM10K_TLV_MSG_TEST_HANDLER(fm10k_tlv_msg_test),
510 FM10K_VF_MSG_MAC_VLAN_HANDLER(fm10k_msg_mac_vlan_vf),
511 FM10K_VF_MSG_LPORT_STATE_HANDLER(fm10k_msg_lport_state_vf),
512 FM10K_TLV_MSG_ERROR_HANDLER(fm10k_tlv_msg_error),
513};
514
515static const struct fm10k_mac_ops mac_ops_vf = {
516 .get_bus_info = fm10k_get_bus_info_generic,
517 .reset_hw = fm10k_reset_hw_vf,
518 .init_hw = fm10k_init_hw_vf,
519 .start_hw = fm10k_start_hw_generic,
520 .stop_hw = fm10k_stop_hw_vf,
521 .update_vlan = fm10k_update_vlan_vf,
522 .read_mac_addr = fm10k_read_mac_addr_vf,
523 .update_uc_addr = fm10k_update_uc_addr_vf,
524 .update_mc_addr = fm10k_update_mc_addr_vf,
525 .update_xcast_mode = fm10k_update_xcast_mode_vf,
526 .update_int_moderator = fm10k_update_int_moderator_vf,
527 .update_lport_state = fm10k_update_lport_state_vf,
528 .update_hw_stats = fm10k_update_hw_stats_vf,
529 .rebind_hw_stats = fm10k_rebind_hw_stats_vf,
530 .configure_dglort_map = fm10k_configure_dglort_map_vf,
531 .get_host_state = fm10k_get_host_state_generic,
532};
533
534static s32 fm10k_get_invariants_vf(struct fm10k_hw *hw)
535{
536 fm10k_get_invariants_generic(hw);
537
538 return fm10k_pfvf_mbx_init(hw, &hw->mbx, fm10k_msg_data_vf, 0);
539}
540
541const struct fm10k_info fm10k_vf_info = {
542 .mac = fm10k_mac_vf,
543 .get_invariants = fm10k_get_invariants_vf,
544 .mac_ops = &mac_ops_vf,
545};