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