1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright IBM Corp. 2018
6 #define KMSG_COMPONENT "qeth"
7 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
9 #include <linux/ethtool.h>
10 #include "qeth_core.h"
13 #define QETH_TXQ_STAT(_name, _stat) { \
15 .offset = offsetof(struct qeth_out_q_stats, _stat) \
18 #define QETH_CARD_STAT(_name, _stat) { \
20 .offset = offsetof(struct qeth_card_stats, _stat) \
24 char name[ETH_GSTRING_LEN];
28 static const struct qeth_stats txq_stats[] = {
29 QETH_TXQ_STAT("IO buffers", bufs),
30 QETH_TXQ_STAT("IO buffer elements", buf_elements),
31 QETH_TXQ_STAT("packed IO buffers", bufs_pack),
32 QETH_TXQ_STAT("skbs", tx_packets),
33 QETH_TXQ_STAT("packed skbs", skbs_pack),
34 QETH_TXQ_STAT("SG skbs", skbs_sg),
35 QETH_TXQ_STAT("HW csum skbs", skbs_csum),
36 QETH_TXQ_STAT("TSO skbs", skbs_tso),
37 QETH_TXQ_STAT("linearized skbs", skbs_linearized),
38 QETH_TXQ_STAT("linearized+error skbs", skbs_linearized_fail),
39 QETH_TXQ_STAT("TSO bytes", tso_bytes),
40 QETH_TXQ_STAT("Packing mode switches", packing_mode_switch),
41 QETH_TXQ_STAT("Queue stopped", stopped),
42 QETH_TXQ_STAT("Doorbell", doorbell),
43 QETH_TXQ_STAT("IRQ for frames", coal_frames),
44 QETH_TXQ_STAT("Completion yield", completion_yield),
45 QETH_TXQ_STAT("Completion timer", completion_timer),
48 static const struct qeth_stats card_stats[] = {
49 QETH_CARD_STAT("rx0 IO buffers", rx_bufs),
50 QETH_CARD_STAT("rx0 HW csum skbs", rx_skb_csum),
51 QETH_CARD_STAT("rx0 SG skbs", rx_sg_skbs),
52 QETH_CARD_STAT("rx0 SG page frags", rx_sg_frags),
53 QETH_CARD_STAT("rx0 SG page allocs", rx_sg_alloc_page),
54 QETH_CARD_STAT("rx0 dropped, no memory", rx_dropped_nomem),
55 QETH_CARD_STAT("rx0 dropped, bad format", rx_dropped_notsupp),
56 QETH_CARD_STAT("rx0 dropped, runt", rx_dropped_runt),
59 #define TXQ_STATS_LEN ARRAY_SIZE(txq_stats)
60 #define CARD_STATS_LEN ARRAY_SIZE(card_stats)
62 static void qeth_add_stat_data(u64 **dst, void *src,
63 const struct qeth_stats stats[],
69 for (i = 0; i < size; i++) {
70 stat = (char *)src + stats[i].offset;
76 static void qeth_add_stat_strings(u8 **data, const char *prefix,
77 const struct qeth_stats stats[],
82 for (i = 0; i < size; i++) {
83 snprintf(*data, ETH_GSTRING_LEN, "%s%s", prefix, stats[i].name);
84 *data += ETH_GSTRING_LEN;
88 static int qeth_get_sset_count(struct net_device *dev, int stringset)
90 struct qeth_card *card = dev->ml_priv;
94 return CARD_STATS_LEN +
95 card->qdio.no_out_queues * TXQ_STATS_LEN;
101 static void qeth_get_ethtool_stats(struct net_device *dev,
102 struct ethtool_stats *stats, u64 *data)
104 struct qeth_card *card = dev->ml_priv;
107 qeth_add_stat_data(&data, &card->stats, card_stats, CARD_STATS_LEN);
108 for (i = 0; i < card->qdio.no_out_queues; i++)
109 qeth_add_stat_data(&data, &card->qdio.out_qs[i]->stats,
110 txq_stats, TXQ_STATS_LEN);
113 static void __qeth_set_coalesce(struct net_device *dev,
114 struct qeth_qdio_out_q *queue,
115 struct ethtool_coalesce *coal)
117 WRITE_ONCE(queue->coalesce_usecs, coal->tx_coalesce_usecs);
118 WRITE_ONCE(queue->max_coalesced_frames, coal->tx_max_coalesced_frames);
120 if (coal->tx_coalesce_usecs &&
121 netif_running(dev) &&
122 !qeth_out_queue_is_empty(queue))
123 qeth_tx_arm_timer(queue, coal->tx_coalesce_usecs);
126 static int qeth_set_coalesce(struct net_device *dev,
127 struct ethtool_coalesce *coal)
129 struct qeth_card *card = dev->ml_priv;
130 struct qeth_qdio_out_q *queue;
136 if (!coal->tx_coalesce_usecs && !coal->tx_max_coalesced_frames)
139 qeth_for_each_output_queue(card, queue, i)
140 __qeth_set_coalesce(dev, queue, coal);
145 static void qeth_get_ringparam(struct net_device *dev,
146 struct ethtool_ringparam *param)
148 struct qeth_card *card = dev->ml_priv;
150 param->rx_max_pending = QDIO_MAX_BUFFERS_PER_Q;
151 param->rx_mini_max_pending = 0;
152 param->rx_jumbo_max_pending = 0;
153 param->tx_max_pending = QDIO_MAX_BUFFERS_PER_Q;
155 param->rx_pending = card->qdio.in_buf_pool.buf_count;
156 param->rx_mini_pending = 0;
157 param->rx_jumbo_pending = 0;
158 param->tx_pending = QDIO_MAX_BUFFERS_PER_Q;
161 static void qeth_get_strings(struct net_device *dev, u32 stringset, u8 *data)
163 struct qeth_card *card = dev->ml_priv;
164 char prefix[ETH_GSTRING_LEN] = "";
169 qeth_add_stat_strings(&data, prefix, card_stats,
171 for (i = 0; i < card->qdio.no_out_queues; i++) {
172 snprintf(prefix, ETH_GSTRING_LEN, "tx%u ", i);
173 qeth_add_stat_strings(&data, prefix, txq_stats,
183 static void qeth_get_drvinfo(struct net_device *dev,
184 struct ethtool_drvinfo *info)
186 struct qeth_card *card = dev->ml_priv;
188 strlcpy(info->driver, IS_LAYER2(card) ? "qeth_l2" : "qeth_l3",
189 sizeof(info->driver));
190 strlcpy(info->fw_version, card->info.mcl_level,
191 sizeof(info->fw_version));
192 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
193 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
196 static void qeth_get_channels(struct net_device *dev,
197 struct ethtool_channels *channels)
199 struct qeth_card *card = dev->ml_priv;
201 channels->max_rx = dev->num_rx_queues;
202 channels->max_tx = card->qdio.no_out_queues;
203 channels->max_other = 0;
204 channels->max_combined = 0;
205 channels->rx_count = dev->real_num_rx_queues;
206 channels->tx_count = dev->real_num_tx_queues;
207 channels->other_count = 0;
208 channels->combined_count = 0;
211 static int qeth_set_channels(struct net_device *dev,
212 struct ethtool_channels *channels)
214 struct qeth_card *card = dev->ml_priv;
216 if (channels->rx_count == 0 || channels->tx_count == 0)
218 if (channels->tx_count > card->qdio.no_out_queues)
222 if (channels->tx_count < QETH_IQD_MIN_TXQ)
225 /* Reject downgrade while running. It could push displaced
226 * ucast flows onto txq0, which is reserved for mcast.
228 if (netif_running(dev) &&
229 channels->tx_count < dev->real_num_tx_queues)
232 /* OSA still uses the legacy prio-queue mechanism: */
233 if (!IS_VM_NIC(card))
237 return qeth_set_real_num_tx_queues(card, channels->tx_count);
240 static int qeth_get_ts_info(struct net_device *dev,
241 struct ethtool_ts_info *info)
243 struct qeth_card *card = dev->ml_priv;
248 return ethtool_op_get_ts_info(dev, info);
251 static int qeth_get_tunable(struct net_device *dev,
252 const struct ethtool_tunable *tuna, void *data)
254 struct qeth_priv *priv = netdev_priv(dev);
257 case ETHTOOL_RX_COPYBREAK:
258 *(u32 *)data = priv->rx_copybreak;
265 static int qeth_set_tunable(struct net_device *dev,
266 const struct ethtool_tunable *tuna,
269 struct qeth_priv *priv = netdev_priv(dev);
272 case ETHTOOL_RX_COPYBREAK:
273 WRITE_ONCE(priv->rx_copybreak, *(u32 *)data);
280 static int qeth_get_per_queue_coalesce(struct net_device *dev, u32 __queue,
281 struct ethtool_coalesce *coal)
283 struct qeth_card *card = dev->ml_priv;
284 struct qeth_qdio_out_q *queue;
289 if (__queue >= card->qdio.no_out_queues)
292 queue = card->qdio.out_qs[__queue];
294 coal->tx_coalesce_usecs = queue->coalesce_usecs;
295 coal->tx_max_coalesced_frames = queue->max_coalesced_frames;
299 static int qeth_set_per_queue_coalesce(struct net_device *dev, u32 queue,
300 struct ethtool_coalesce *coal)
302 struct qeth_card *card = dev->ml_priv;
307 if (queue >= card->qdio.no_out_queues)
310 if (!coal->tx_coalesce_usecs && !coal->tx_max_coalesced_frames)
313 __qeth_set_coalesce(dev, card->qdio.out_qs[queue], coal);
317 /* Helper function to fill 'advertising' and 'supported' which are the same. */
318 /* Autoneg and full-duplex are supported and advertised unconditionally. */
319 /* Always advertise and support all speeds up to specified, and only one */
320 /* specified port type. */
321 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
322 int maxspeed, int porttype)
324 ethtool_link_ksettings_zero_link_mode(cmd, supported);
325 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
326 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
328 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
329 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
333 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
334 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
337 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
338 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
341 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
342 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
346 /* partially does fall through, to also select lower speeds */
349 ethtool_link_ksettings_add_link_mode(cmd, supported,
351 ethtool_link_ksettings_add_link_mode(cmd, advertising,
355 ethtool_link_ksettings_add_link_mode(cmd, supported,
357 ethtool_link_ksettings_add_link_mode(cmd, advertising,
361 ethtool_link_ksettings_add_link_mode(cmd, supported,
363 ethtool_link_ksettings_add_link_mode(cmd, advertising,
365 ethtool_link_ksettings_add_link_mode(cmd, supported,
367 ethtool_link_ksettings_add_link_mode(cmd, advertising,
371 ethtool_link_ksettings_add_link_mode(cmd, supported,
373 ethtool_link_ksettings_add_link_mode(cmd, advertising,
375 ethtool_link_ksettings_add_link_mode(cmd, supported,
377 ethtool_link_ksettings_add_link_mode(cmd, advertising,
381 ethtool_link_ksettings_add_link_mode(cmd, supported,
383 ethtool_link_ksettings_add_link_mode(cmd, advertising,
385 ethtool_link_ksettings_add_link_mode(cmd, supported,
387 ethtool_link_ksettings_add_link_mode(cmd, advertising,
391 ethtool_link_ksettings_add_link_mode(cmd, supported,
393 ethtool_link_ksettings_add_link_mode(cmd, advertising,
395 ethtool_link_ksettings_add_link_mode(cmd, supported,
397 ethtool_link_ksettings_add_link_mode(cmd, advertising,
404 static int qeth_get_link_ksettings(struct net_device *netdev,
405 struct ethtool_link_ksettings *cmd)
407 struct qeth_card *card = netdev->ml_priv;
408 enum qeth_link_types link_type;
409 struct carrier_info carrier_info;
412 if (IS_IQD(card) || IS_VM_NIC(card))
413 link_type = QETH_LINK_TYPE_10GBIT_ETH;
415 link_type = card->info.link_type;
417 cmd->base.duplex = DUPLEX_FULL;
418 cmd->base.autoneg = AUTONEG_ENABLE;
419 cmd->base.phy_address = 0;
420 cmd->base.mdio_support = 0;
421 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
422 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
425 case QETH_LINK_TYPE_FAST_ETH:
426 case QETH_LINK_TYPE_LANE_ETH100:
427 cmd->base.speed = SPEED_100;
428 cmd->base.port = PORT_TP;
430 case QETH_LINK_TYPE_GBIT_ETH:
431 case QETH_LINK_TYPE_LANE_ETH1000:
432 cmd->base.speed = SPEED_1000;
433 cmd->base.port = PORT_FIBRE;
435 case QETH_LINK_TYPE_10GBIT_ETH:
436 cmd->base.speed = SPEED_10000;
437 cmd->base.port = PORT_FIBRE;
439 case QETH_LINK_TYPE_25GBIT_ETH:
440 cmd->base.speed = SPEED_25000;
441 cmd->base.port = PORT_FIBRE;
444 cmd->base.speed = SPEED_10;
445 cmd->base.port = PORT_TP;
447 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port);
449 /* Check if we can obtain more accurate information. */
450 /* If QUERY_CARD_INFO command is not supported or fails, */
451 /* just return the heuristics that was filled above. */
452 rc = qeth_query_card_info(card, &carrier_info);
453 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
455 if (rc) /* report error from the hardware operation */
457 /* on success, fill in the information got from the hardware */
460 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
461 carrier_info.card_type,
462 carrier_info.port_mode,
463 carrier_info.port_speed);
465 /* Update attributes for which we've obtained more authoritative */
466 /* information, leave the rest the way they where filled above. */
467 switch (carrier_info.card_type) {
468 case CARD_INFO_TYPE_1G_COPPER_A:
469 case CARD_INFO_TYPE_1G_COPPER_B:
470 cmd->base.port = PORT_TP;
471 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
473 case CARD_INFO_TYPE_1G_FIBRE_A:
474 case CARD_INFO_TYPE_1G_FIBRE_B:
475 cmd->base.port = PORT_FIBRE;
476 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
478 case CARD_INFO_TYPE_10G_FIBRE_A:
479 case CARD_INFO_TYPE_10G_FIBRE_B:
480 cmd->base.port = PORT_FIBRE;
481 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port);
485 switch (carrier_info.port_mode) {
486 case CARD_INFO_PORTM_FULLDUPLEX:
487 cmd->base.duplex = DUPLEX_FULL;
489 case CARD_INFO_PORTM_HALFDUPLEX:
490 cmd->base.duplex = DUPLEX_HALF;
494 switch (carrier_info.port_speed) {
495 case CARD_INFO_PORTS_10M:
496 cmd->base.speed = SPEED_10;
498 case CARD_INFO_PORTS_100M:
499 cmd->base.speed = SPEED_100;
501 case CARD_INFO_PORTS_1G:
502 cmd->base.speed = SPEED_1000;
504 case CARD_INFO_PORTS_10G:
505 cmd->base.speed = SPEED_10000;
507 case CARD_INFO_PORTS_25G:
508 cmd->base.speed = SPEED_25000;
515 const struct ethtool_ops qeth_ethtool_ops = {
516 .supported_coalesce_params = ETHTOOL_COALESCE_TX_USECS |
517 ETHTOOL_COALESCE_TX_MAX_FRAMES,
518 .get_link = ethtool_op_get_link,
519 .set_coalesce = qeth_set_coalesce,
520 .get_ringparam = qeth_get_ringparam,
521 .get_strings = qeth_get_strings,
522 .get_ethtool_stats = qeth_get_ethtool_stats,
523 .get_sset_count = qeth_get_sset_count,
524 .get_drvinfo = qeth_get_drvinfo,
525 .get_channels = qeth_get_channels,
526 .set_channels = qeth_set_channels,
527 .get_ts_info = qeth_get_ts_info,
528 .get_tunable = qeth_get_tunable,
529 .set_tunable = qeth_set_tunable,
530 .get_per_queue_coalesce = qeth_get_per_queue_coalesce,
531 .set_per_queue_coalesce = qeth_set_per_queue_coalesce,
532 .get_link_ksettings = qeth_get_link_ksettings,
535 const struct ethtool_ops qeth_osn_ethtool_ops = {
536 .get_strings = qeth_get_strings,
537 .get_ethtool_stats = qeth_get_ethtool_stats,
538 .get_sset_count = qeth_get_sset_count,
539 .get_drvinfo = qeth_get_drvinfo,