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[J-linux.git] / drivers / net / ethernet / intel / ixgbevf / ethtool.c
1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 1999 - 2018 Intel Corporation. */
3
4 /* ethtool support for ixgbevf */
5
6 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
7
8 #include <linux/types.h>
9 #include <linux/module.h>
10 #include <linux/slab.h>
11 #include <linux/pci.h>
12 #include <linux/netdevice.h>
13 #include <linux/ethtool.h>
14 #include <linux/vmalloc.h>
15 #include <linux/if_vlan.h>
16 #include <linux/uaccess.h>
17
18 #include "ixgbevf.h"
19
20 enum {NETDEV_STATS, IXGBEVF_STATS};
21
22 struct ixgbe_stats {
23         char stat_string[ETH_GSTRING_LEN];
24         int type;
25         int sizeof_stat;
26         int stat_offset;
27 };
28
29 #define IXGBEVF_STAT(_name, _stat) { \
30         .stat_string = _name, \
31         .type = IXGBEVF_STATS, \
32         .sizeof_stat = sizeof_field(struct ixgbevf_adapter, _stat), \
33         .stat_offset = offsetof(struct ixgbevf_adapter, _stat) \
34 }
35
36 #define IXGBEVF_NETDEV_STAT(_net_stat) { \
37         .stat_string = #_net_stat, \
38         .type = NETDEV_STATS, \
39         .sizeof_stat = sizeof_field(struct net_device_stats, _net_stat), \
40         .stat_offset = offsetof(struct net_device_stats, _net_stat) \
41 }
42
43 static struct ixgbe_stats ixgbevf_gstrings_stats[] = {
44         IXGBEVF_NETDEV_STAT(rx_packets),
45         IXGBEVF_NETDEV_STAT(tx_packets),
46         IXGBEVF_NETDEV_STAT(rx_bytes),
47         IXGBEVF_NETDEV_STAT(tx_bytes),
48         IXGBEVF_STAT("tx_busy", tx_busy),
49         IXGBEVF_STAT("tx_restart_queue", restart_queue),
50         IXGBEVF_STAT("tx_timeout_count", tx_timeout_count),
51         IXGBEVF_NETDEV_STAT(multicast),
52         IXGBEVF_STAT("rx_csum_offload_errors", hw_csum_rx_error),
53         IXGBEVF_STAT("alloc_rx_page", alloc_rx_page),
54         IXGBEVF_STAT("alloc_rx_page_failed", alloc_rx_page_failed),
55         IXGBEVF_STAT("alloc_rx_buff_failed", alloc_rx_buff_failed),
56         IXGBEVF_STAT("tx_ipsec", tx_ipsec),
57         IXGBEVF_STAT("rx_ipsec", rx_ipsec),
58 };
59
60 #define IXGBEVF_QUEUE_STATS_LEN ( \
61         (((struct ixgbevf_adapter *)netdev_priv(netdev))->num_tx_queues + \
62          ((struct ixgbevf_adapter *)netdev_priv(netdev))->num_xdp_queues + \
63          ((struct ixgbevf_adapter *)netdev_priv(netdev))->num_rx_queues) * \
64          (sizeof(struct ixgbevf_stats) / sizeof(u64)))
65 #define IXGBEVF_GLOBAL_STATS_LEN ARRAY_SIZE(ixgbevf_gstrings_stats)
66
67 #define IXGBEVF_STATS_LEN (IXGBEVF_GLOBAL_STATS_LEN + IXGBEVF_QUEUE_STATS_LEN)
68 static const char ixgbe_gstrings_test[][ETH_GSTRING_LEN] = {
69         "Register test  (offline)",
70         "Link test   (on/offline)"
71 };
72
73 #define IXGBEVF_TEST_LEN (sizeof(ixgbe_gstrings_test) / ETH_GSTRING_LEN)
74
75 static const char ixgbevf_priv_flags_strings[][ETH_GSTRING_LEN] = {
76 #define IXGBEVF_PRIV_FLAGS_LEGACY_RX    BIT(0)
77         "legacy-rx",
78 };
79
80 #define IXGBEVF_PRIV_FLAGS_STR_LEN ARRAY_SIZE(ixgbevf_priv_flags_strings)
81
82 static int ixgbevf_get_link_ksettings(struct net_device *netdev,
83                                       struct ethtool_link_ksettings *cmd)
84 {
85         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
86
87         ethtool_link_ksettings_zero_link_mode(cmd, supported);
88         ethtool_link_ksettings_add_link_mode(cmd, supported, 10000baseT_Full);
89         cmd->base.autoneg = AUTONEG_DISABLE;
90         cmd->base.port = -1;
91
92         if (adapter->link_up) {
93                 __u32 speed = SPEED_10000;
94
95                 switch (adapter->link_speed) {
96                 case IXGBE_LINK_SPEED_10GB_FULL:
97                         speed = SPEED_10000;
98                         break;
99                 case IXGBE_LINK_SPEED_1GB_FULL:
100                         speed = SPEED_1000;
101                         break;
102                 case IXGBE_LINK_SPEED_100_FULL:
103                         speed = SPEED_100;
104                         break;
105                 }
106
107                 cmd->base.speed = speed;
108                 cmd->base.duplex = DUPLEX_FULL;
109         } else {
110                 cmd->base.speed = SPEED_UNKNOWN;
111                 cmd->base.duplex = DUPLEX_UNKNOWN;
112         }
113
114         return 0;
115 }
116
117 static u32 ixgbevf_get_msglevel(struct net_device *netdev)
118 {
119         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
120
121         return adapter->msg_enable;
122 }
123
124 static void ixgbevf_set_msglevel(struct net_device *netdev, u32 data)
125 {
126         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
127
128         adapter->msg_enable = data;
129 }
130
131 static int ixgbevf_get_regs_len(struct net_device *netdev)
132 {
133 #define IXGBE_REGS_LEN 45
134         return IXGBE_REGS_LEN * sizeof(u32);
135 }
136
137 static void ixgbevf_get_regs(struct net_device *netdev,
138                              struct ethtool_regs *regs,
139                              void *p)
140 {
141         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
142         struct ixgbe_hw *hw = &adapter->hw;
143         u32 *regs_buff = p;
144         u32 regs_len = ixgbevf_get_regs_len(netdev);
145         u8 i;
146
147         memset(p, 0, regs_len);
148
149         /* generate a number suitable for ethtool's register version */
150         regs->version = (1u << 24) | (hw->revision_id << 16) | hw->device_id;
151
152         /* General Registers */
153         regs_buff[0] = IXGBE_READ_REG(hw, IXGBE_VFCTRL);
154         regs_buff[1] = IXGBE_READ_REG(hw, IXGBE_VFSTATUS);
155         regs_buff[2] = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
156         regs_buff[3] = IXGBE_READ_REG(hw, IXGBE_VFRXMEMWRAP);
157         regs_buff[4] = IXGBE_READ_REG(hw, IXGBE_VFFRTIMER);
158
159         /* Interrupt */
160         /* don't read EICR because it can clear interrupt causes, instead
161          * read EICS which is a shadow but doesn't clear EICR
162          */
163         regs_buff[5] = IXGBE_READ_REG(hw, IXGBE_VTEICS);
164         regs_buff[6] = IXGBE_READ_REG(hw, IXGBE_VTEICS);
165         regs_buff[7] = IXGBE_READ_REG(hw, IXGBE_VTEIMS);
166         regs_buff[8] = IXGBE_READ_REG(hw, IXGBE_VTEIMC);
167         regs_buff[9] = IXGBE_READ_REG(hw, IXGBE_VTEIAC);
168         regs_buff[10] = IXGBE_READ_REG(hw, IXGBE_VTEIAM);
169         regs_buff[11] = IXGBE_READ_REG(hw, IXGBE_VTEITR(0));
170         regs_buff[12] = IXGBE_READ_REG(hw, IXGBE_VTIVAR(0));
171         regs_buff[13] = IXGBE_READ_REG(hw, IXGBE_VTIVAR_MISC);
172
173         /* Receive DMA */
174         for (i = 0; i < 2; i++)
175                 regs_buff[14 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDBAL(i));
176         for (i = 0; i < 2; i++)
177                 regs_buff[16 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDBAH(i));
178         for (i = 0; i < 2; i++)
179                 regs_buff[18 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDLEN(i));
180         for (i = 0; i < 2; i++)
181                 regs_buff[20 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDH(i));
182         for (i = 0; i < 2; i++)
183                 regs_buff[22 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDT(i));
184         for (i = 0; i < 2; i++)
185                 regs_buff[24 + i] = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
186         for (i = 0; i < 2; i++)
187                 regs_buff[26 + i] = IXGBE_READ_REG(hw, IXGBE_VFSRRCTL(i));
188
189         /* Receive */
190         regs_buff[28] = IXGBE_READ_REG(hw, IXGBE_VFPSRTYPE);
191
192         /* Transmit */
193         for (i = 0; i < 2; i++)
194                 regs_buff[29 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDBAL(i));
195         for (i = 0; i < 2; i++)
196                 regs_buff[31 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDBAH(i));
197         for (i = 0; i < 2; i++)
198                 regs_buff[33 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDLEN(i));
199         for (i = 0; i < 2; i++)
200                 regs_buff[35 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDH(i));
201         for (i = 0; i < 2; i++)
202                 regs_buff[37 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDT(i));
203         for (i = 0; i < 2; i++)
204                 regs_buff[39 + i] = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
205         for (i = 0; i < 2; i++)
206                 regs_buff[41 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDWBAL(i));
207         for (i = 0; i < 2; i++)
208                 regs_buff[43 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDWBAH(i));
209 }
210
211 static void ixgbevf_get_drvinfo(struct net_device *netdev,
212                                 struct ethtool_drvinfo *drvinfo)
213 {
214         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
215
216         strscpy(drvinfo->driver, ixgbevf_driver_name, sizeof(drvinfo->driver));
217         strscpy(drvinfo->bus_info, pci_name(adapter->pdev),
218                 sizeof(drvinfo->bus_info));
219
220         drvinfo->n_priv_flags = IXGBEVF_PRIV_FLAGS_STR_LEN;
221 }
222
223 static void ixgbevf_get_ringparam(struct net_device *netdev,
224                                   struct ethtool_ringparam *ring,
225                                   struct kernel_ethtool_ringparam *kernel_ring,
226                                   struct netlink_ext_ack *extack)
227 {
228         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
229
230         ring->rx_max_pending = IXGBEVF_MAX_RXD;
231         ring->tx_max_pending = IXGBEVF_MAX_TXD;
232         ring->rx_pending = adapter->rx_ring_count;
233         ring->tx_pending = adapter->tx_ring_count;
234 }
235
236 static int ixgbevf_set_ringparam(struct net_device *netdev,
237                                  struct ethtool_ringparam *ring,
238                                  struct kernel_ethtool_ringparam *kernel_ring,
239                                  struct netlink_ext_ack *extack)
240 {
241         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
242         struct ixgbevf_ring *tx_ring = NULL, *rx_ring = NULL;
243         u32 new_rx_count, new_tx_count;
244         int i, j, err = 0;
245
246         if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
247                 return -EINVAL;
248
249         new_tx_count = max_t(u32, ring->tx_pending, IXGBEVF_MIN_TXD);
250         new_tx_count = min_t(u32, new_tx_count, IXGBEVF_MAX_TXD);
251         new_tx_count = ALIGN(new_tx_count, IXGBE_REQ_TX_DESCRIPTOR_MULTIPLE);
252
253         new_rx_count = max_t(u32, ring->rx_pending, IXGBEVF_MIN_RXD);
254         new_rx_count = min_t(u32, new_rx_count, IXGBEVF_MAX_RXD);
255         new_rx_count = ALIGN(new_rx_count, IXGBE_REQ_RX_DESCRIPTOR_MULTIPLE);
256
257         /* if nothing to do return success */
258         if ((new_tx_count == adapter->tx_ring_count) &&
259             (new_rx_count == adapter->rx_ring_count))
260                 return 0;
261
262         while (test_and_set_bit(__IXGBEVF_RESETTING, &adapter->state))
263                 usleep_range(1000, 2000);
264
265         if (!netif_running(adapter->netdev)) {
266                 for (i = 0; i < adapter->num_tx_queues; i++)
267                         adapter->tx_ring[i]->count = new_tx_count;
268                 for (i = 0; i < adapter->num_xdp_queues; i++)
269                         adapter->xdp_ring[i]->count = new_tx_count;
270                 for (i = 0; i < adapter->num_rx_queues; i++)
271                         adapter->rx_ring[i]->count = new_rx_count;
272                 adapter->tx_ring_count = new_tx_count;
273                 adapter->xdp_ring_count = new_tx_count;
274                 adapter->rx_ring_count = new_rx_count;
275                 goto clear_reset;
276         }
277
278         if (new_tx_count != adapter->tx_ring_count) {
279                 tx_ring = vmalloc(array_size(sizeof(*tx_ring),
280                                              adapter->num_tx_queues +
281                                                 adapter->num_xdp_queues));
282                 if (!tx_ring) {
283                         err = -ENOMEM;
284                         goto clear_reset;
285                 }
286
287                 for (i = 0; i < adapter->num_tx_queues; i++) {
288                         /* clone ring and setup updated count */
289                         tx_ring[i] = *adapter->tx_ring[i];
290                         tx_ring[i].count = new_tx_count;
291                         err = ixgbevf_setup_tx_resources(&tx_ring[i]);
292                         if (err) {
293                                 while (i) {
294                                         i--;
295                                         ixgbevf_free_tx_resources(&tx_ring[i]);
296                                 }
297
298                                 vfree(tx_ring);
299                                 tx_ring = NULL;
300
301                                 goto clear_reset;
302                         }
303                 }
304
305                 for (j = 0; j < adapter->num_xdp_queues; i++, j++) {
306                         /* clone ring and setup updated count */
307                         tx_ring[i] = *adapter->xdp_ring[j];
308                         tx_ring[i].count = new_tx_count;
309                         err = ixgbevf_setup_tx_resources(&tx_ring[i]);
310                         if (err) {
311                                 while (i) {
312                                         i--;
313                                         ixgbevf_free_tx_resources(&tx_ring[i]);
314                                 }
315
316                                 vfree(tx_ring);
317                                 tx_ring = NULL;
318
319                                 goto clear_reset;
320                         }
321                 }
322         }
323
324         if (new_rx_count != adapter->rx_ring_count) {
325                 rx_ring = vmalloc(array_size(sizeof(*rx_ring),
326                                              adapter->num_rx_queues));
327                 if (!rx_ring) {
328                         err = -ENOMEM;
329                         goto clear_reset;
330                 }
331
332                 for (i = 0; i < adapter->num_rx_queues; i++) {
333                         /* clone ring and setup updated count */
334                         rx_ring[i] = *adapter->rx_ring[i];
335
336                         /* Clear copied XDP RX-queue info */
337                         memset(&rx_ring[i].xdp_rxq, 0,
338                                sizeof(rx_ring[i].xdp_rxq));
339
340                         rx_ring[i].count = new_rx_count;
341                         err = ixgbevf_setup_rx_resources(adapter, &rx_ring[i]);
342                         if (err) {
343                                 while (i) {
344                                         i--;
345                                         ixgbevf_free_rx_resources(&rx_ring[i]);
346                                 }
347
348                                 vfree(rx_ring);
349                                 rx_ring = NULL;
350
351                                 goto clear_reset;
352                         }
353                 }
354         }
355
356         /* bring interface down to prepare for update */
357         ixgbevf_down(adapter);
358
359         /* Tx */
360         if (tx_ring) {
361                 for (i = 0; i < adapter->num_tx_queues; i++) {
362                         ixgbevf_free_tx_resources(adapter->tx_ring[i]);
363                         *adapter->tx_ring[i] = tx_ring[i];
364                 }
365                 adapter->tx_ring_count = new_tx_count;
366
367                 for (j = 0; j < adapter->num_xdp_queues; i++, j++) {
368                         ixgbevf_free_tx_resources(adapter->xdp_ring[j]);
369                         *adapter->xdp_ring[j] = tx_ring[i];
370                 }
371                 adapter->xdp_ring_count = new_tx_count;
372
373                 vfree(tx_ring);
374                 tx_ring = NULL;
375         }
376
377         /* Rx */
378         if (rx_ring) {
379                 for (i = 0; i < adapter->num_rx_queues; i++) {
380                         ixgbevf_free_rx_resources(adapter->rx_ring[i]);
381                         *adapter->rx_ring[i] = rx_ring[i];
382                 }
383                 adapter->rx_ring_count = new_rx_count;
384
385                 vfree(rx_ring);
386                 rx_ring = NULL;
387         }
388
389         /* restore interface using new values */
390         ixgbevf_up(adapter);
391
392 clear_reset:
393         /* free Tx resources if Rx error is encountered */
394         if (tx_ring) {
395                 for (i = 0;
396                      i < adapter->num_tx_queues + adapter->num_xdp_queues; i++)
397                         ixgbevf_free_tx_resources(&tx_ring[i]);
398                 vfree(tx_ring);
399         }
400
401         clear_bit(__IXGBEVF_RESETTING, &adapter->state);
402         return err;
403 }
404
405 static int ixgbevf_get_sset_count(struct net_device *netdev, int stringset)
406 {
407         switch (stringset) {
408         case ETH_SS_TEST:
409                 return IXGBEVF_TEST_LEN;
410         case ETH_SS_STATS:
411                 return IXGBEVF_STATS_LEN;
412         case ETH_SS_PRIV_FLAGS:
413                 return IXGBEVF_PRIV_FLAGS_STR_LEN;
414         default:
415                 return -EINVAL;
416         }
417 }
418
419 static void ixgbevf_get_ethtool_stats(struct net_device *netdev,
420                                       struct ethtool_stats *stats, u64 *data)
421 {
422         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
423         struct rtnl_link_stats64 temp;
424         const struct rtnl_link_stats64 *net_stats;
425         unsigned int start;
426         struct ixgbevf_ring *ring;
427         int i, j;
428         char *p;
429
430         ixgbevf_update_stats(adapter);
431         net_stats = dev_get_stats(netdev, &temp);
432         for (i = 0; i < IXGBEVF_GLOBAL_STATS_LEN; i++) {
433                 switch (ixgbevf_gstrings_stats[i].type) {
434                 case NETDEV_STATS:
435                         p = (char *)net_stats +
436                                         ixgbevf_gstrings_stats[i].stat_offset;
437                         break;
438                 case IXGBEVF_STATS:
439                         p = (char *)adapter +
440                                         ixgbevf_gstrings_stats[i].stat_offset;
441                         break;
442                 default:
443                         data[i] = 0;
444                         continue;
445                 }
446
447                 data[i] = (ixgbevf_gstrings_stats[i].sizeof_stat ==
448                            sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
449         }
450
451         /* populate Tx queue data */
452         for (j = 0; j < adapter->num_tx_queues; j++) {
453                 ring = adapter->tx_ring[j];
454                 if (!ring) {
455                         data[i++] = 0;
456                         data[i++] = 0;
457                         continue;
458                 }
459
460                 do {
461                         start = u64_stats_fetch_begin(&ring->syncp);
462                         data[i]   = ring->stats.packets;
463                         data[i + 1] = ring->stats.bytes;
464                 } while (u64_stats_fetch_retry(&ring->syncp, start));
465                 i += 2;
466         }
467
468         /* populate XDP queue data */
469         for (j = 0; j < adapter->num_xdp_queues; j++) {
470                 ring = adapter->xdp_ring[j];
471                 if (!ring) {
472                         data[i++] = 0;
473                         data[i++] = 0;
474                         continue;
475                 }
476
477                 do {
478                         start = u64_stats_fetch_begin(&ring->syncp);
479                         data[i] = ring->stats.packets;
480                         data[i + 1] = ring->stats.bytes;
481                 } while (u64_stats_fetch_retry(&ring->syncp, start));
482                 i += 2;
483         }
484
485         /* populate Rx queue data */
486         for (j = 0; j < adapter->num_rx_queues; j++) {
487                 ring = adapter->rx_ring[j];
488                 if (!ring) {
489                         data[i++] = 0;
490                         data[i++] = 0;
491                         continue;
492                 }
493
494                 do {
495                         start = u64_stats_fetch_begin(&ring->syncp);
496                         data[i]   = ring->stats.packets;
497                         data[i + 1] = ring->stats.bytes;
498                 } while (u64_stats_fetch_retry(&ring->syncp, start));
499                 i += 2;
500         }
501 }
502
503 static void ixgbevf_get_strings(struct net_device *netdev, u32 stringset,
504                                 u8 *data)
505 {
506         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
507         char *p = (char *)data;
508         int i;
509
510         switch (stringset) {
511         case ETH_SS_TEST:
512                 memcpy(data, *ixgbe_gstrings_test,
513                        IXGBEVF_TEST_LEN * ETH_GSTRING_LEN);
514                 break;
515         case ETH_SS_STATS:
516                 for (i = 0; i < IXGBEVF_GLOBAL_STATS_LEN; i++) {
517                         memcpy(p, ixgbevf_gstrings_stats[i].stat_string,
518                                ETH_GSTRING_LEN);
519                         p += ETH_GSTRING_LEN;
520                 }
521
522                 for (i = 0; i < adapter->num_tx_queues; i++) {
523                         sprintf(p, "tx_queue_%u_packets", i);
524                         p += ETH_GSTRING_LEN;
525                         sprintf(p, "tx_queue_%u_bytes", i);
526                         p += ETH_GSTRING_LEN;
527                 }
528                 for (i = 0; i < adapter->num_xdp_queues; i++) {
529                         sprintf(p, "xdp_queue_%u_packets", i);
530                         p += ETH_GSTRING_LEN;
531                         sprintf(p, "xdp_queue_%u_bytes", i);
532                         p += ETH_GSTRING_LEN;
533                 }
534                 for (i = 0; i < adapter->num_rx_queues; i++) {
535                         sprintf(p, "rx_queue_%u_packets", i);
536                         p += ETH_GSTRING_LEN;
537                         sprintf(p, "rx_queue_%u_bytes", i);
538                         p += ETH_GSTRING_LEN;
539                 }
540                 break;
541         case ETH_SS_PRIV_FLAGS:
542                 memcpy(data, ixgbevf_priv_flags_strings,
543                        IXGBEVF_PRIV_FLAGS_STR_LEN * ETH_GSTRING_LEN);
544                 break;
545         }
546 }
547
548 static int ixgbevf_link_test(struct ixgbevf_adapter *adapter, u64 *data)
549 {
550         struct ixgbe_hw *hw = &adapter->hw;
551         bool link_up;
552         u32 link_speed = 0;
553         *data = 0;
554
555         hw->mac.ops.check_link(hw, &link_speed, &link_up, true);
556         if (!link_up)
557                 *data = 1;
558
559         return *data;
560 }
561
562 /* ethtool register test data */
563 struct ixgbevf_reg_test {
564         u16 reg;
565         u8  array_len;
566         u8  test_type;
567         u32 mask;
568         u32 write;
569 };
570
571 /* In the hardware, registers are laid out either singly, in arrays
572  * spaced 0x40 bytes apart, or in contiguous tables.  We assume
573  * most tests take place on arrays or single registers (handled
574  * as a single-element array) and special-case the tables.
575  * Table tests are always pattern tests.
576  *
577  * We also make provision for some required setup steps by specifying
578  * registers to be written without any read-back testing.
579  */
580
581 #define PATTERN_TEST    1
582 #define SET_READ_TEST   2
583 #define WRITE_NO_TEST   3
584 #define TABLE32_TEST    4
585 #define TABLE64_TEST_LO 5
586 #define TABLE64_TEST_HI 6
587
588 /* default VF register test */
589 static const struct ixgbevf_reg_test reg_test_vf[] = {
590         { IXGBE_VFRDBAL(0), 2, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFF80 },
591         { IXGBE_VFRDBAH(0), 2, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
592         { IXGBE_VFRDLEN(0), 2, PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
593         { IXGBE_VFRXDCTL(0), 2, WRITE_NO_TEST, 0, IXGBE_RXDCTL_ENABLE },
594         { IXGBE_VFRDT(0), 2, PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
595         { IXGBE_VFRXDCTL(0), 2, WRITE_NO_TEST, 0, 0 },
596         { IXGBE_VFTDBAL(0), 2, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
597         { IXGBE_VFTDBAH(0), 2, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
598         { IXGBE_VFTDLEN(0), 2, PATTERN_TEST, 0x000FFF80, 0x000FFF80 },
599         { .reg = 0 }
600 };
601
602 static const u32 register_test_patterns[] = {
603         0x5A5A5A5A, 0xA5A5A5A5, 0x00000000, 0xFFFFFFFF
604 };
605
606 static bool reg_pattern_test(struct ixgbevf_adapter *adapter, u64 *data,
607                              int reg, u32 mask, u32 write)
608 {
609         u32 pat, val, before;
610
611         if (IXGBE_REMOVED(adapter->hw.hw_addr)) {
612                 *data = 1;
613                 return true;
614         }
615         for (pat = 0; pat < ARRAY_SIZE(register_test_patterns); pat++) {
616                 before = ixgbevf_read_reg(&adapter->hw, reg);
617                 ixgbe_write_reg(&adapter->hw, reg,
618                                 register_test_patterns[pat] & write);
619                 val = ixgbevf_read_reg(&adapter->hw, reg);
620                 if (val != (register_test_patterns[pat] & write & mask)) {
621                         hw_dbg(&adapter->hw,
622                                "pattern test reg %04X failed: got 0x%08X expected 0x%08X\n",
623                                reg, val,
624                                register_test_patterns[pat] & write & mask);
625                         *data = reg;
626                         ixgbe_write_reg(&adapter->hw, reg, before);
627                         return true;
628                 }
629                 ixgbe_write_reg(&adapter->hw, reg, before);
630         }
631         return false;
632 }
633
634 static bool reg_set_and_check(struct ixgbevf_adapter *adapter, u64 *data,
635                               int reg, u32 mask, u32 write)
636 {
637         u32 val, before;
638
639         if (IXGBE_REMOVED(adapter->hw.hw_addr)) {
640                 *data = 1;
641                 return true;
642         }
643         before = ixgbevf_read_reg(&adapter->hw, reg);
644         ixgbe_write_reg(&adapter->hw, reg, write & mask);
645         val = ixgbevf_read_reg(&adapter->hw, reg);
646         if ((write & mask) != (val & mask)) {
647                 pr_err("set/check reg %04X test failed: got 0x%08X expected 0x%08X\n",
648                        reg, (val & mask), write & mask);
649                 *data = reg;
650                 ixgbe_write_reg(&adapter->hw, reg, before);
651                 return true;
652         }
653         ixgbe_write_reg(&adapter->hw, reg, before);
654         return false;
655 }
656
657 static int ixgbevf_reg_test(struct ixgbevf_adapter *adapter, u64 *data)
658 {
659         const struct ixgbevf_reg_test *test;
660         u32 i;
661
662         if (IXGBE_REMOVED(adapter->hw.hw_addr)) {
663                 dev_err(&adapter->pdev->dev,
664                         "Adapter removed - register test blocked\n");
665                 *data = 1;
666                 return 1;
667         }
668         test = reg_test_vf;
669
670         /* Perform the register test, looping through the test table
671          * until we either fail or reach the null entry.
672          */
673         while (test->reg) {
674                 for (i = 0; i < test->array_len; i++) {
675                         bool b = false;
676
677                         switch (test->test_type) {
678                         case PATTERN_TEST:
679                                 b = reg_pattern_test(adapter, data,
680                                                      test->reg + (i * 0x40),
681                                                      test->mask,
682                                                      test->write);
683                                 break;
684                         case SET_READ_TEST:
685                                 b = reg_set_and_check(adapter, data,
686                                                       test->reg + (i * 0x40),
687                                                       test->mask,
688                                                       test->write);
689                                 break;
690                         case WRITE_NO_TEST:
691                                 ixgbe_write_reg(&adapter->hw,
692                                                 test->reg + (i * 0x40),
693                                                 test->write);
694                                 break;
695                         case TABLE32_TEST:
696                                 b = reg_pattern_test(adapter, data,
697                                                      test->reg + (i * 4),
698                                                      test->mask,
699                                                      test->write);
700                                 break;
701                         case TABLE64_TEST_LO:
702                                 b = reg_pattern_test(adapter, data,
703                                                      test->reg + (i * 8),
704                                                      test->mask,
705                                                      test->write);
706                                 break;
707                         case TABLE64_TEST_HI:
708                                 b = reg_pattern_test(adapter, data,
709                                                      test->reg + 4 + (i * 8),
710                                                      test->mask,
711                                                      test->write);
712                                 break;
713                         }
714                         if (b)
715                                 return 1;
716                 }
717                 test++;
718         }
719
720         *data = 0;
721         return *data;
722 }
723
724 static void ixgbevf_diag_test(struct net_device *netdev,
725                               struct ethtool_test *eth_test, u64 *data)
726 {
727         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
728         bool if_running = netif_running(netdev);
729
730         if (IXGBE_REMOVED(adapter->hw.hw_addr)) {
731                 dev_err(&adapter->pdev->dev,
732                         "Adapter removed - test blocked\n");
733                 data[0] = 1;
734                 data[1] = 1;
735                 eth_test->flags |= ETH_TEST_FL_FAILED;
736                 return;
737         }
738         set_bit(__IXGBEVF_TESTING, &adapter->state);
739         if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
740                 /* Offline tests */
741
742                 hw_dbg(&adapter->hw, "offline testing starting\n");
743
744                 /* Link test performed before hardware reset so autoneg doesn't
745                  * interfere with test result
746                  */
747                 if (ixgbevf_link_test(adapter, &data[1]))
748                         eth_test->flags |= ETH_TEST_FL_FAILED;
749
750                 if (if_running)
751                         /* indicate we're in test mode */
752                         ixgbevf_close(netdev);
753                 else
754                         ixgbevf_reset(adapter);
755
756                 hw_dbg(&adapter->hw, "register testing starting\n");
757                 if (ixgbevf_reg_test(adapter, &data[0]))
758                         eth_test->flags |= ETH_TEST_FL_FAILED;
759
760                 ixgbevf_reset(adapter);
761
762                 clear_bit(__IXGBEVF_TESTING, &adapter->state);
763                 if (if_running)
764                         ixgbevf_open(netdev);
765         } else {
766                 hw_dbg(&adapter->hw, "online testing starting\n");
767                 /* Online tests */
768                 if (ixgbevf_link_test(adapter, &data[1]))
769                         eth_test->flags |= ETH_TEST_FL_FAILED;
770
771                 /* Online tests aren't run; pass by default */
772                 data[0] = 0;
773
774                 clear_bit(__IXGBEVF_TESTING, &adapter->state);
775         }
776         msleep_interruptible(4 * 1000);
777 }
778
779 static int ixgbevf_nway_reset(struct net_device *netdev)
780 {
781         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
782
783         if (netif_running(netdev))
784                 ixgbevf_reinit_locked(adapter);
785
786         return 0;
787 }
788
789 static int ixgbevf_get_coalesce(struct net_device *netdev,
790                                 struct ethtool_coalesce *ec,
791                                 struct kernel_ethtool_coalesce *kernel_coal,
792                                 struct netlink_ext_ack *extack)
793 {
794         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
795
796         /* only valid if in constant ITR mode */
797         if (adapter->rx_itr_setting <= 1)
798                 ec->rx_coalesce_usecs = adapter->rx_itr_setting;
799         else
800                 ec->rx_coalesce_usecs = adapter->rx_itr_setting >> 2;
801
802         /* if in mixed Tx/Rx queues per vector mode, report only Rx settings */
803         if (adapter->q_vector[0]->tx.count && adapter->q_vector[0]->rx.count)
804                 return 0;
805
806         /* only valid if in constant ITR mode */
807         if (adapter->tx_itr_setting <= 1)
808                 ec->tx_coalesce_usecs = adapter->tx_itr_setting;
809         else
810                 ec->tx_coalesce_usecs = adapter->tx_itr_setting >> 2;
811
812         return 0;
813 }
814
815 static int ixgbevf_set_coalesce(struct net_device *netdev,
816                                 struct ethtool_coalesce *ec,
817                                 struct kernel_ethtool_coalesce *kernel_coal,
818                                 struct netlink_ext_ack *extack)
819 {
820         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
821         struct ixgbevf_q_vector *q_vector;
822         int num_vectors, i;
823         u16 tx_itr_param, rx_itr_param;
824
825         /* don't accept Tx specific changes if we've got mixed RxTx vectors */
826         if (adapter->q_vector[0]->tx.count &&
827             adapter->q_vector[0]->rx.count && ec->tx_coalesce_usecs)
828                 return -EINVAL;
829
830         if ((ec->rx_coalesce_usecs > (IXGBE_MAX_EITR >> 2)) ||
831             (ec->tx_coalesce_usecs > (IXGBE_MAX_EITR >> 2)))
832                 return -EINVAL;
833
834         if (ec->rx_coalesce_usecs > 1)
835                 adapter->rx_itr_setting = ec->rx_coalesce_usecs << 2;
836         else
837                 adapter->rx_itr_setting = ec->rx_coalesce_usecs;
838
839         if (adapter->rx_itr_setting == 1)
840                 rx_itr_param = IXGBE_20K_ITR;
841         else
842                 rx_itr_param = adapter->rx_itr_setting;
843
844         if (ec->tx_coalesce_usecs > 1)
845                 adapter->tx_itr_setting = ec->tx_coalesce_usecs << 2;
846         else
847                 adapter->tx_itr_setting = ec->tx_coalesce_usecs;
848
849         if (adapter->tx_itr_setting == 1)
850                 tx_itr_param = IXGBE_12K_ITR;
851         else
852                 tx_itr_param = adapter->tx_itr_setting;
853
854         num_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
855
856         for (i = 0; i < num_vectors; i++) {
857                 q_vector = adapter->q_vector[i];
858                 if (q_vector->tx.count && !q_vector->rx.count)
859                         /* Tx only */
860                         q_vector->itr = tx_itr_param;
861                 else
862                         /* Rx only or mixed */
863                         q_vector->itr = rx_itr_param;
864                 ixgbevf_write_eitr(q_vector);
865         }
866
867         return 0;
868 }
869
870 static int ixgbevf_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info,
871                              u32 *rules __always_unused)
872 {
873         struct ixgbevf_adapter *adapter = netdev_priv(dev);
874
875         switch (info->cmd) {
876         case ETHTOOL_GRXRINGS:
877                 info->data = adapter->num_rx_queues;
878                 return 0;
879         default:
880                 hw_dbg(&adapter->hw, "Command parameters not supported\n");
881                 return -EOPNOTSUPP;
882         }
883 }
884
885 static u32 ixgbevf_get_rxfh_indir_size(struct net_device *netdev)
886 {
887         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
888
889         if (adapter->hw.mac.type >= ixgbe_mac_X550_vf)
890                 return IXGBEVF_X550_VFRETA_SIZE;
891
892         return IXGBEVF_82599_RETA_SIZE;
893 }
894
895 static u32 ixgbevf_get_rxfh_key_size(struct net_device *netdev)
896 {
897         return IXGBEVF_RSS_HASH_KEY_SIZE;
898 }
899
900 static int ixgbevf_get_rxfh(struct net_device *netdev,
901                             struct ethtool_rxfh_param *rxfh)
902 {
903         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
904         int err = 0;
905
906         rxfh->hfunc = ETH_RSS_HASH_TOP;
907
908         if (adapter->hw.mac.type >= ixgbe_mac_X550_vf) {
909                 if (rxfh->key)
910                         memcpy(rxfh->key, adapter->rss_key,
911                                ixgbevf_get_rxfh_key_size(netdev));
912
913                 if (rxfh->indir) {
914                         int i;
915
916                         for (i = 0; i < IXGBEVF_X550_VFRETA_SIZE; i++)
917                                 rxfh->indir[i] = adapter->rss_indir_tbl[i];
918                 }
919         } else {
920                 /* If neither indirection table nor hash key was requested
921                  *  - just return a success avoiding taking any locks.
922                  */
923                 if (!rxfh->indir && !rxfh->key)
924                         return 0;
925
926                 spin_lock_bh(&adapter->mbx_lock);
927                 if (rxfh->indir)
928                         err = ixgbevf_get_reta_locked(&adapter->hw,
929                                                       rxfh->indir,
930                                                       adapter->num_rx_queues);
931
932                 if (!err && rxfh->key)
933                         err = ixgbevf_get_rss_key_locked(&adapter->hw,
934                                                          rxfh->key);
935
936                 spin_unlock_bh(&adapter->mbx_lock);
937         }
938
939         return err;
940 }
941
942 static u32 ixgbevf_get_priv_flags(struct net_device *netdev)
943 {
944         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
945         u32 priv_flags = 0;
946
947         if (adapter->flags & IXGBEVF_FLAGS_LEGACY_RX)
948                 priv_flags |= IXGBEVF_PRIV_FLAGS_LEGACY_RX;
949
950         return priv_flags;
951 }
952
953 static int ixgbevf_set_priv_flags(struct net_device *netdev, u32 priv_flags)
954 {
955         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
956         unsigned int flags = adapter->flags;
957
958         flags &= ~IXGBEVF_FLAGS_LEGACY_RX;
959         if (priv_flags & IXGBEVF_PRIV_FLAGS_LEGACY_RX)
960                 flags |= IXGBEVF_FLAGS_LEGACY_RX;
961
962         if (flags != adapter->flags) {
963                 adapter->flags = flags;
964
965                 /* reset interface to repopulate queues */
966                 if (netif_running(netdev))
967                         ixgbevf_reinit_locked(adapter);
968         }
969
970         return 0;
971 }
972
973 static const struct ethtool_ops ixgbevf_ethtool_ops = {
974         .supported_coalesce_params = ETHTOOL_COALESCE_USECS,
975         .get_drvinfo            = ixgbevf_get_drvinfo,
976         .get_regs_len           = ixgbevf_get_regs_len,
977         .get_regs               = ixgbevf_get_regs,
978         .nway_reset             = ixgbevf_nway_reset,
979         .get_link               = ethtool_op_get_link,
980         .get_ringparam          = ixgbevf_get_ringparam,
981         .set_ringparam          = ixgbevf_set_ringparam,
982         .get_msglevel           = ixgbevf_get_msglevel,
983         .set_msglevel           = ixgbevf_set_msglevel,
984         .self_test              = ixgbevf_diag_test,
985         .get_sset_count         = ixgbevf_get_sset_count,
986         .get_strings            = ixgbevf_get_strings,
987         .get_ethtool_stats      = ixgbevf_get_ethtool_stats,
988         .get_coalesce           = ixgbevf_get_coalesce,
989         .set_coalesce           = ixgbevf_set_coalesce,
990         .get_rxnfc              = ixgbevf_get_rxnfc,
991         .get_rxfh_indir_size    = ixgbevf_get_rxfh_indir_size,
992         .get_rxfh_key_size      = ixgbevf_get_rxfh_key_size,
993         .get_rxfh               = ixgbevf_get_rxfh,
994         .get_link_ksettings     = ixgbevf_get_link_ksettings,
995         .get_priv_flags         = ixgbevf_get_priv_flags,
996         .set_priv_flags         = ixgbevf_set_priv_flags,
997 };
998
999 void ixgbevf_set_ethtool_ops(struct net_device *netdev)
1000 {
1001         netdev->ethtool_ops = &ixgbevf_ethtool_ops;
1002 }
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