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_priv *priv = netdev_priv(dev);
215 struct qeth_card *card = dev->ml_priv;
218 if (channels->rx_count == 0 || channels->tx_count == 0)
220 if (channels->tx_count > card->qdio.no_out_queues)
223 /* Prio-queueing needs all TX queues: */
224 if (qeth_uses_tx_prio_queueing(card))
228 if (channels->tx_count < QETH_IQD_MIN_TXQ)
231 /* Reject downgrade while running. It could push displaced
232 * ucast flows onto txq0, which is reserved for mcast.
234 if (netif_running(dev) &&
235 channels->tx_count < dev->real_num_tx_queues)
239 rc = qeth_set_real_num_tx_queues(card, channels->tx_count);
241 priv->tx_wanted_queues = channels->tx_count;
246 static int qeth_get_ts_info(struct net_device *dev,
247 struct ethtool_ts_info *info)
249 struct qeth_card *card = dev->ml_priv;
254 return ethtool_op_get_ts_info(dev, info);
257 static int qeth_get_tunable(struct net_device *dev,
258 const struct ethtool_tunable *tuna, void *data)
260 struct qeth_priv *priv = netdev_priv(dev);
263 case ETHTOOL_RX_COPYBREAK:
264 *(u32 *)data = priv->rx_copybreak;
271 static int qeth_set_tunable(struct net_device *dev,
272 const struct ethtool_tunable *tuna,
275 struct qeth_priv *priv = netdev_priv(dev);
278 case ETHTOOL_RX_COPYBREAK:
279 WRITE_ONCE(priv->rx_copybreak, *(u32 *)data);
286 static int qeth_get_per_queue_coalesce(struct net_device *dev, u32 __queue,
287 struct ethtool_coalesce *coal)
289 struct qeth_card *card = dev->ml_priv;
290 struct qeth_qdio_out_q *queue;
295 if (__queue >= card->qdio.no_out_queues)
298 queue = card->qdio.out_qs[__queue];
300 coal->tx_coalesce_usecs = queue->coalesce_usecs;
301 coal->tx_max_coalesced_frames = queue->max_coalesced_frames;
305 static int qeth_set_per_queue_coalesce(struct net_device *dev, u32 queue,
306 struct ethtool_coalesce *coal)
308 struct qeth_card *card = dev->ml_priv;
313 if (queue >= card->qdio.no_out_queues)
316 if (!coal->tx_coalesce_usecs && !coal->tx_max_coalesced_frames)
319 __qeth_set_coalesce(dev, card->qdio.out_qs[queue], coal);
323 /* Helper function to fill 'advertising' and 'supported' which are the same. */
324 /* Autoneg and full-duplex are supported and advertised unconditionally. */
325 /* Always advertise and support all speeds up to specified, and only one */
326 /* specified port type. */
327 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
328 int maxspeed, int porttype)
330 ethtool_link_ksettings_zero_link_mode(cmd, supported);
331 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
332 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
334 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
335 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
339 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
340 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
343 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
344 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
347 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
348 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
352 /* partially does fall through, to also select lower speeds */
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,
367 ethtool_link_ksettings_add_link_mode(cmd, supported,
369 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,
377 ethtool_link_ksettings_add_link_mode(cmd, supported,
379 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,
387 ethtool_link_ksettings_add_link_mode(cmd, supported,
389 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,
397 ethtool_link_ksettings_add_link_mode(cmd, supported,
399 ethtool_link_ksettings_add_link_mode(cmd, advertising,
401 ethtool_link_ksettings_add_link_mode(cmd, supported,
403 ethtool_link_ksettings_add_link_mode(cmd, advertising,
410 static int qeth_get_link_ksettings(struct net_device *netdev,
411 struct ethtool_link_ksettings *cmd)
413 struct qeth_card *card = netdev->ml_priv;
414 enum qeth_link_types link_type;
415 struct carrier_info carrier_info;
418 if (IS_IQD(card) || IS_VM_NIC(card))
419 link_type = QETH_LINK_TYPE_10GBIT_ETH;
421 link_type = card->info.link_type;
423 cmd->base.duplex = DUPLEX_FULL;
424 cmd->base.autoneg = AUTONEG_ENABLE;
425 cmd->base.phy_address = 0;
426 cmd->base.mdio_support = 0;
427 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
428 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
431 case QETH_LINK_TYPE_FAST_ETH:
432 case QETH_LINK_TYPE_LANE_ETH100:
433 cmd->base.speed = SPEED_100;
434 cmd->base.port = PORT_TP;
436 case QETH_LINK_TYPE_GBIT_ETH:
437 case QETH_LINK_TYPE_LANE_ETH1000:
438 cmd->base.speed = SPEED_1000;
439 cmd->base.port = PORT_FIBRE;
441 case QETH_LINK_TYPE_10GBIT_ETH:
442 cmd->base.speed = SPEED_10000;
443 cmd->base.port = PORT_FIBRE;
445 case QETH_LINK_TYPE_25GBIT_ETH:
446 cmd->base.speed = SPEED_25000;
447 cmd->base.port = PORT_FIBRE;
450 cmd->base.speed = SPEED_10;
451 cmd->base.port = PORT_TP;
453 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port);
455 /* Check if we can obtain more accurate information. */
456 /* If QUERY_CARD_INFO command is not supported or fails, */
457 /* just return the heuristics that was filled above. */
458 rc = qeth_query_card_info(card, &carrier_info);
459 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
461 if (rc) /* report error from the hardware operation */
463 /* on success, fill in the information got from the hardware */
466 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
467 carrier_info.card_type,
468 carrier_info.port_mode,
469 carrier_info.port_speed);
471 /* Update attributes for which we've obtained more authoritative */
472 /* information, leave the rest the way they where filled above. */
473 switch (carrier_info.card_type) {
474 case CARD_INFO_TYPE_1G_COPPER_A:
475 case CARD_INFO_TYPE_1G_COPPER_B:
476 cmd->base.port = PORT_TP;
477 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
479 case CARD_INFO_TYPE_1G_FIBRE_A:
480 case CARD_INFO_TYPE_1G_FIBRE_B:
481 cmd->base.port = PORT_FIBRE;
482 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
484 case CARD_INFO_TYPE_10G_FIBRE_A:
485 case CARD_INFO_TYPE_10G_FIBRE_B:
486 cmd->base.port = PORT_FIBRE;
487 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port);
491 switch (carrier_info.port_mode) {
492 case CARD_INFO_PORTM_FULLDUPLEX:
493 cmd->base.duplex = DUPLEX_FULL;
495 case CARD_INFO_PORTM_HALFDUPLEX:
496 cmd->base.duplex = DUPLEX_HALF;
500 switch (carrier_info.port_speed) {
501 case CARD_INFO_PORTS_10M:
502 cmd->base.speed = SPEED_10;
504 case CARD_INFO_PORTS_100M:
505 cmd->base.speed = SPEED_100;
507 case CARD_INFO_PORTS_1G:
508 cmd->base.speed = SPEED_1000;
510 case CARD_INFO_PORTS_10G:
511 cmd->base.speed = SPEED_10000;
513 case CARD_INFO_PORTS_25G:
514 cmd->base.speed = SPEED_25000;
521 const struct ethtool_ops qeth_ethtool_ops = {
522 .supported_coalesce_params = ETHTOOL_COALESCE_TX_USECS |
523 ETHTOOL_COALESCE_TX_MAX_FRAMES,
524 .get_link = ethtool_op_get_link,
525 .set_coalesce = qeth_set_coalesce,
526 .get_ringparam = qeth_get_ringparam,
527 .get_strings = qeth_get_strings,
528 .get_ethtool_stats = qeth_get_ethtool_stats,
529 .get_sset_count = qeth_get_sset_count,
530 .get_drvinfo = qeth_get_drvinfo,
531 .get_channels = qeth_get_channels,
532 .set_channels = qeth_set_channels,
533 .get_ts_info = qeth_get_ts_info,
534 .get_tunable = qeth_get_tunable,
535 .set_tunable = qeth_set_tunable,
536 .get_per_queue_coalesce = qeth_get_per_queue_coalesce,
537 .set_per_queue_coalesce = qeth_set_per_queue_coalesce,
538 .get_link_ksettings = qeth_get_link_ksettings,
541 const struct ethtool_ops qeth_osn_ethtool_ops = {
542 .get_strings = qeth_get_strings,
543 .get_ethtool_stats = qeth_get_ethtool_stats,
544 .get_sset_count = qeth_get_sset_count,
545 .get_drvinfo = qeth_get_drvinfo,