1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Texas Instruments Ethernet Switch Driver
4 *
5 * Copyright (C) 2012 Texas Instruments
6 *
7 */
8
9 #include <linux/kernel.h>
10 #include <linux/io.h>
11 #include <linux/clk.h>
12 #include <linux/timer.h>
13 #include <linux/module.h>
14 #include <linux/platform_device.h>
15 #include <linux/irqreturn.h>
16 #include <linux/interrupt.h>
17 #include <linux/if_ether.h>
18 #include <linux/etherdevice.h>
19 #include <linux/netdevice.h>
20 #include <linux/net_tstamp.h>
21 #include <linux/phy.h>
22 #include <linux/phy/phy.h>
23 #include <linux/workqueue.h>
24 #include <linux/delay.h>
25 #include <linux/pm_runtime.h>
26 #include <linux/gpio/consumer.h>
27 #include <linux/of.h>
28 #include <linux/of_mdio.h>
29 #include <linux/of_net.h>
30 #include <linux/of_platform.h>
31 #include <linux/if_vlan.h>
32 #include <linux/kmemleak.h>
33 #include <linux/sys_soc.h>
34 #include <net/page_pool/helpers.h>
35 #include <linux/bpf.h>
36 #include <linux/bpf_trace.h>
37
38 #include <linux/pinctrl/consumer.h>
39 #include <net/pkt_cls.h>
40
41 #include "cpsw.h"
42 #include "cpsw_ale.h"
43 #include "cpsw_priv.h"
44 #include "cpsw_sl.h"
45 #include "cpts.h"
46 #include "davinci_cpdma.h"
47
48 #include <net/pkt_sched.h>
49
50 static int debug_level;
51 module_param(debug_level, int, 0);
52 MODULE_PARM_DESC(debug_level, "cpsw debug level (NETIF_MSG bits)");
53
54 static int ale_ageout = 10;
55 module_param(ale_ageout, int, 0);
56 MODULE_PARM_DESC(ale_ageout, "cpsw ale ageout interval (seconds)");
57
58 static int rx_packet_max = CPSW_MAX_PACKET_SIZE;
59 module_param(rx_packet_max, int, 0);
60 MODULE_PARM_DESC(rx_packet_max, "maximum receive packet size (bytes)");
61
62 static int descs_pool_size = CPSW_CPDMA_DESCS_POOL_SIZE_DEFAULT;
63 module_param(descs_pool_size, int, 0444);
64 MODULE_PARM_DESC(descs_pool_size, "Number of CPDMA CPPI descriptors in pool");
65
66 #define for_each_slave(priv, func, arg...) \
67 do { \
68 struct cpsw_slave *slave; \
69 struct cpsw_common *cpsw = (priv)->cpsw; \
70 int n; \
71 if (cpsw->data.dual_emac) \
72 (func)((cpsw)->slaves + priv->emac_port, ##arg);\
73 else \
74 for (n = cpsw->data.slaves, \
75 slave = cpsw->slaves; \
76 n; n--) \
77 (func)(slave++, ##arg); \
78 } while (0)
79
cpsw_slave_index_priv(struct cpsw_common * cpsw,struct cpsw_priv * priv)80 static int cpsw_slave_index_priv(struct cpsw_common *cpsw,
81 struct cpsw_priv *priv)
82 {
83 return cpsw->data.dual_emac ? priv->emac_port : cpsw->data.active_slave;
84 }
85
cpsw_get_slave_port(u32 slave_num)86 static int cpsw_get_slave_port(u32 slave_num)
87 {
88 return slave_num + 1;
89 }
90
91 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
92 __be16 proto, u16 vid);
93
cpsw_set_promiscious(struct net_device * ndev,bool enable)94 static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
95 {
96 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
97 struct cpsw_ale *ale = cpsw->ale;
98 int i;
99
100 if (cpsw->data.dual_emac) {
101 bool flag = false;
102
103 /* Enabling promiscuous mode for one interface will be
104 * common for both the interface as the interface shares
105 * the same hardware resource.
106 */
107 for (i = 0; i < cpsw->data.slaves; i++)
108 if (cpsw->slaves[i].ndev->flags & IFF_PROMISC)
109 flag = true;
110
111 if (!enable && flag) {
112 enable = true;
113 dev_err(&ndev->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
114 }
115
116 if (enable) {
117 /* Enable Bypass */
118 cpsw_ale_control_set(ale, 0, ALE_BYPASS, 1);
119
120 dev_dbg(&ndev->dev, "promiscuity enabled\n");
121 } else {
122 /* Disable Bypass */
123 cpsw_ale_control_set(ale, 0, ALE_BYPASS, 0);
124 dev_dbg(&ndev->dev, "promiscuity disabled\n");
125 }
126 } else {
127 if (enable) {
128 unsigned long timeout = jiffies + HZ;
129
130 /* Disable Learn for all ports (host is port 0 and slaves are port 1 and up */
131 for (i = 0; i <= cpsw->data.slaves; i++) {
132 cpsw_ale_control_set(ale, i,
133 ALE_PORT_NOLEARN, 1);
134 cpsw_ale_control_set(ale, i,
135 ALE_PORT_NO_SA_UPDATE, 1);
136 }
137
138 /* Clear All Untouched entries */
139 cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
140 do {
141 cpu_relax();
142 if (cpsw_ale_control_get(ale, 0, ALE_AGEOUT))
143 break;
144 } while (time_after(timeout, jiffies));
145 cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
146
147 /* Clear all mcast from ALE */
148 cpsw_ale_flush_multicast(ale, ALE_ALL_PORTS, -1);
149 __hw_addr_ref_unsync_dev(&ndev->mc, ndev, NULL);
150
151 /* Flood All Unicast Packets to Host port */
152 cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 1);
153 dev_dbg(&ndev->dev, "promiscuity enabled\n");
154 } else {
155 /* Don't Flood All Unicast Packets to Host port */
156 cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 0);
157
158 /* Enable Learn for all ports (host is port 0 and slaves are port 1 and up */
159 for (i = 0; i <= cpsw->data.slaves; i++) {
160 cpsw_ale_control_set(ale, i,
161 ALE_PORT_NOLEARN, 0);
162 cpsw_ale_control_set(ale, i,
163 ALE_PORT_NO_SA_UPDATE, 0);
164 }
165 dev_dbg(&ndev->dev, "promiscuity disabled\n");
166 }
167 }
168 }
169
170 /**
171 * cpsw_set_mc - adds multicast entry to the table if it's not added or deletes
172 * if it's not deleted
173 * @ndev: device to sync
174 * @addr: address to be added or deleted
175 * @vid: vlan id, if vid < 0 set/unset address for real device
176 * @add: add address if the flag is set or remove otherwise
177 */
cpsw_set_mc(struct net_device * ndev,const u8 * addr,int vid,int add)178 static int cpsw_set_mc(struct net_device *ndev, const u8 *addr,
179 int vid, int add)
180 {
181 struct cpsw_priv *priv = netdev_priv(ndev);
182 struct cpsw_common *cpsw = priv->cpsw;
183 int mask, flags, ret;
184
185 if (vid < 0) {
186 if (cpsw->data.dual_emac)
187 vid = cpsw->slaves[priv->emac_port].port_vlan;
188 else
189 vid = 0;
190 }
191
192 mask = cpsw->data.dual_emac ? ALE_PORT_HOST : ALE_ALL_PORTS;
193 flags = vid ? ALE_VLAN : 0;
194
195 if (add)
196 ret = cpsw_ale_add_mcast(cpsw->ale, addr, mask, flags, vid, 0);
197 else
198 ret = cpsw_ale_del_mcast(cpsw->ale, addr, 0, flags, vid);
199
200 return ret;
201 }
202
cpsw_update_vlan_mc(struct net_device * vdev,int vid,void * ctx)203 static int cpsw_update_vlan_mc(struct net_device *vdev, int vid, void *ctx)
204 {
205 struct addr_sync_ctx *sync_ctx = ctx;
206 struct netdev_hw_addr *ha;
207 int found = 0, ret = 0;
208
209 if (!vdev || !(vdev->flags & IFF_UP))
210 return 0;
211
212 /* vlan address is relevant if its sync_cnt != 0 */
213 netdev_for_each_mc_addr(ha, vdev) {
214 if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
215 found = ha->sync_cnt;
216 break;
217 }
218 }
219
220 if (found)
221 sync_ctx->consumed++;
222
223 if (sync_ctx->flush) {
224 if (!found)
225 cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
226 return 0;
227 }
228
229 if (found)
230 ret = cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 1);
231
232 return ret;
233 }
234
cpsw_add_mc_addr(struct net_device * ndev,const u8 * addr,int num)235 static int cpsw_add_mc_addr(struct net_device *ndev, const u8 *addr, int num)
236 {
237 struct addr_sync_ctx sync_ctx;
238 int ret;
239
240 sync_ctx.consumed = 0;
241 sync_ctx.addr = addr;
242 sync_ctx.ndev = ndev;
243 sync_ctx.flush = 0;
244
245 ret = vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
246 if (sync_ctx.consumed < num && !ret)
247 ret = cpsw_set_mc(ndev, addr, -1, 1);
248
249 return ret;
250 }
251
cpsw_del_mc_addr(struct net_device * ndev,const u8 * addr,int num)252 static int cpsw_del_mc_addr(struct net_device *ndev, const u8 *addr, int num)
253 {
254 struct addr_sync_ctx sync_ctx;
255
256 sync_ctx.consumed = 0;
257 sync_ctx.addr = addr;
258 sync_ctx.ndev = ndev;
259 sync_ctx.flush = 1;
260
261 vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
262 if (sync_ctx.consumed == num)
263 cpsw_set_mc(ndev, addr, -1, 0);
264
265 return 0;
266 }
267
cpsw_purge_vlan_mc(struct net_device * vdev,int vid,void * ctx)268 static int cpsw_purge_vlan_mc(struct net_device *vdev, int vid, void *ctx)
269 {
270 struct addr_sync_ctx *sync_ctx = ctx;
271 struct netdev_hw_addr *ha;
272 int found = 0;
273
274 if (!vdev || !(vdev->flags & IFF_UP))
275 return 0;
276
277 /* vlan address is relevant if its sync_cnt != 0 */
278 netdev_for_each_mc_addr(ha, vdev) {
279 if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
280 found = ha->sync_cnt;
281 break;
282 }
283 }
284
285 if (!found)
286 return 0;
287
288 sync_ctx->consumed++;
289 cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
290 return 0;
291 }
292
cpsw_purge_all_mc(struct net_device * ndev,const u8 * addr,int num)293 static int cpsw_purge_all_mc(struct net_device *ndev, const u8 *addr, int num)
294 {
295 struct addr_sync_ctx sync_ctx;
296
297 sync_ctx.addr = addr;
298 sync_ctx.ndev = ndev;
299 sync_ctx.consumed = 0;
300
301 vlan_for_each(ndev, cpsw_purge_vlan_mc, &sync_ctx);
302 if (sync_ctx.consumed < num)
303 cpsw_set_mc(ndev, addr, -1, 0);
304
305 return 0;
306 }
307
cpsw_ndo_set_rx_mode(struct net_device * ndev)308 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
309 {
310 struct cpsw_priv *priv = netdev_priv(ndev);
311 struct cpsw_common *cpsw = priv->cpsw;
312 int slave_port = -1;
313
314 if (cpsw->data.dual_emac)
315 slave_port = priv->emac_port + 1;
316
317 if (ndev->flags & IFF_PROMISC) {
318 /* Enable promiscuous mode */
319 cpsw_set_promiscious(ndev, true);
320 cpsw_ale_set_allmulti(cpsw->ale, IFF_ALLMULTI, slave_port);
321 return;
322 } else {
323 /* Disable promiscuous mode */
324 cpsw_set_promiscious(ndev, false);
325 }
326
327 /* Restore allmulti on vlans if necessary */
328 cpsw_ale_set_allmulti(cpsw->ale,
329 ndev->flags & IFF_ALLMULTI, slave_port);
330
331 /* add/remove mcast address either for real netdev or for vlan */
332 __hw_addr_ref_sync_dev(&ndev->mc, ndev, cpsw_add_mc_addr,
333 cpsw_del_mc_addr);
334 }
335
cpsw_rxbuf_total_len(unsigned int len)336 static unsigned int cpsw_rxbuf_total_len(unsigned int len)
337 {
338 len += CPSW_HEADROOM_NA;
339 len += SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
340
341 return SKB_DATA_ALIGN(len);
342 }
343
cpsw_rx_handler(void * token,int len,int status)344 static void cpsw_rx_handler(void *token, int len, int status)
345 {
346 struct page *new_page, *page = token;
347 void *pa = page_address(page);
348 struct cpsw_meta_xdp *xmeta = pa + CPSW_XMETA_OFFSET;
349 struct cpsw_common *cpsw = ndev_to_cpsw(xmeta->ndev);
350 int pkt_size = cpsw->rx_packet_max;
351 int ret = 0, port, ch = xmeta->ch;
352 int headroom = CPSW_HEADROOM_NA;
353 struct net_device *ndev = xmeta->ndev;
354 u32 metasize = 0;
355 struct cpsw_priv *priv;
356 struct page_pool *pool;
357 struct sk_buff *skb;
358 struct xdp_buff xdp;
359 dma_addr_t dma;
360
361 if (cpsw->data.dual_emac && status >= 0) {
362 port = CPDMA_RX_SOURCE_PORT(status);
363 if (port)
364 ndev = cpsw->slaves[--port].ndev;
365 }
366
367 priv = netdev_priv(ndev);
368 pool = cpsw->page_pool[ch];
369 if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
370 /* In dual emac mode check for all interfaces */
371 if (cpsw->data.dual_emac && cpsw->usage_count &&
372 (status >= 0)) {
373 /* The packet received is for the interface which
374 * is already down and the other interface is up
375 * and running, instead of freeing which results
376 * in reducing of the number of rx descriptor in
377 * DMA engine, requeue page back to cpdma.
378 */
379 new_page = page;
380 goto requeue;
381 }
382
383 /* the interface is going down, pages are purged */
384 page_pool_recycle_direct(pool, page);
385 return;
386 }
387
388 new_page = page_pool_dev_alloc_pages(pool);
389 if (unlikely(!new_page)) {
390 new_page = page;
391 ndev->stats.rx_dropped++;
392 goto requeue;
393 }
394
395 if (priv->xdp_prog) {
396 int size = len;
397
398 xdp_init_buff(&xdp, PAGE_SIZE, &priv->xdp_rxq[ch]);
399 if (status & CPDMA_RX_VLAN_ENCAP) {
400 headroom += CPSW_RX_VLAN_ENCAP_HDR_SIZE;
401 size -= CPSW_RX_VLAN_ENCAP_HDR_SIZE;
402 }
403
404 xdp_prepare_buff(&xdp, pa, headroom, size, true);
405
406 port = priv->emac_port + cpsw->data.dual_emac;
407 ret = cpsw_run_xdp(priv, ch, &xdp, page, port, &len);
408 if (ret != CPSW_XDP_PASS)
409 goto requeue;
410
411 headroom = xdp.data - xdp.data_hard_start;
412 metasize = xdp.data - xdp.data_meta;
413
414 /* XDP prog can modify vlan tag, so can't use encap header */
415 status &= ~CPDMA_RX_VLAN_ENCAP;
416 }
417
418 /* pass skb to netstack if no XDP prog or returned XDP_PASS */
419 skb = build_skb(pa, cpsw_rxbuf_total_len(pkt_size));
420 if (!skb) {
421 ndev->stats.rx_dropped++;
422 page_pool_recycle_direct(pool, page);
423 goto requeue;
424 }
425
426 skb_reserve(skb, headroom);
427 skb_put(skb, len);
428 if (metasize)
429 skb_metadata_set(skb, metasize);
430 skb->dev = ndev;
431 if (status & CPDMA_RX_VLAN_ENCAP)
432 cpsw_rx_vlan_encap(skb);
433 if (priv->rx_ts_enabled)
434 cpts_rx_timestamp(cpsw->cpts, skb);
435 skb->protocol = eth_type_trans(skb, ndev);
436
437 /* mark skb for recycling */
438 skb_mark_for_recycle(skb);
439 netif_receive_skb(skb);
440
441 ndev->stats.rx_bytes += len;
442 ndev->stats.rx_packets++;
443
444 requeue:
445 xmeta = page_address(new_page) + CPSW_XMETA_OFFSET;
446 xmeta->ndev = ndev;
447 xmeta->ch = ch;
448
449 dma = page_pool_get_dma_addr(new_page) + CPSW_HEADROOM_NA;
450 ret = cpdma_chan_submit_mapped(cpsw->rxv[ch].ch, new_page, dma,
451 pkt_size, 0);
452 if (ret < 0) {
453 WARN_ON(ret == -ENOMEM);
454 page_pool_recycle_direct(pool, new_page);
455 }
456 }
457
_cpsw_adjust_link(struct cpsw_slave * slave,struct cpsw_priv * priv,bool * link)458 static void _cpsw_adjust_link(struct cpsw_slave *slave,
459 struct cpsw_priv *priv, bool *link)
460 {
461 struct phy_device *phy = slave->phy;
462 u32 mac_control = 0;
463 u32 slave_port;
464 struct cpsw_common *cpsw = priv->cpsw;
465
466 if (!phy)
467 return;
468
469 slave_port = cpsw_get_slave_port(slave->slave_num);
470
471 if (phy->link) {
472 mac_control = CPSW_SL_CTL_GMII_EN;
473
474 if (phy->speed == 1000)
475 mac_control |= CPSW_SL_CTL_GIG;
476 if (phy->duplex)
477 mac_control |= CPSW_SL_CTL_FULLDUPLEX;
478
479 /* set speed_in input in case RMII mode is used in 100Mbps */
480 if (phy->speed == 100)
481 mac_control |= CPSW_SL_CTL_IFCTL_A;
482 /* in band mode only works in 10Mbps RGMII mode */
483 else if ((phy->speed == 10) && phy_interface_is_rgmii(phy))
484 mac_control |= CPSW_SL_CTL_EXT_EN; /* In Band mode */
485
486 if (priv->rx_pause)
487 mac_control |= CPSW_SL_CTL_RX_FLOW_EN;
488
489 if (priv->tx_pause)
490 mac_control |= CPSW_SL_CTL_TX_FLOW_EN;
491
492 if (mac_control != slave->mac_control)
493 cpsw_sl_ctl_set(slave->mac_sl, mac_control);
494
495 /* enable forwarding */
496 cpsw_ale_control_set(cpsw->ale, slave_port,
497 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
498
499 *link = true;
500
501 if (priv->shp_cfg_speed &&
502 priv->shp_cfg_speed != slave->phy->speed &&
503 !cpsw_shp_is_off(priv))
504 dev_warn(priv->dev,
505 "Speed was changed, CBS shaper speeds are changed!");
506 } else {
507 mac_control = 0;
508 /* disable forwarding */
509 cpsw_ale_control_set(cpsw->ale, slave_port,
510 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
511
512 cpsw_sl_wait_for_idle(slave->mac_sl, 100);
513
514 cpsw_sl_ctl_reset(slave->mac_sl);
515 }
516
517 if (mac_control != slave->mac_control)
518 phy_print_status(phy);
519
520 slave->mac_control = mac_control;
521 }
522
cpsw_adjust_link(struct net_device * ndev)523 static void cpsw_adjust_link(struct net_device *ndev)
524 {
525 struct cpsw_priv *priv = netdev_priv(ndev);
526 struct cpsw_common *cpsw = priv->cpsw;
527 bool link = false;
528
529 for_each_slave(priv, _cpsw_adjust_link, priv, &link);
530
531 if (link) {
532 if (cpsw_need_resplit(cpsw))
533 cpsw_split_res(cpsw);
534
535 netif_carrier_on(ndev);
536 if (netif_running(ndev))
537 netif_tx_wake_all_queues(ndev);
538 } else {
539 netif_carrier_off(ndev);
540 netif_tx_stop_all_queues(ndev);
541 }
542 }
543
cpsw_add_dual_emac_def_ale_entries(struct cpsw_priv * priv,struct cpsw_slave * slave,u32 slave_port)544 static inline void cpsw_add_dual_emac_def_ale_entries(
545 struct cpsw_priv *priv, struct cpsw_slave *slave,
546 u32 slave_port)
547 {
548 struct cpsw_common *cpsw = priv->cpsw;
549 u32 port_mask = 1 << slave_port | ALE_PORT_HOST;
550
551 if (cpsw->version == CPSW_VERSION_1)
552 slave_write(slave, slave->port_vlan, CPSW1_PORT_VLAN);
553 else
554 slave_write(slave, slave->port_vlan, CPSW2_PORT_VLAN);
555 cpsw_ale_add_vlan(cpsw->ale, slave->port_vlan, port_mask,
556 port_mask, port_mask, 0);
557 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
558 ALE_PORT_HOST, ALE_VLAN, slave->port_vlan, 0);
559 cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
560 HOST_PORT_NUM, ALE_VLAN |
561 ALE_SECURE, slave->port_vlan);
562 cpsw_ale_control_set(cpsw->ale, slave_port,
563 ALE_PORT_DROP_UNKNOWN_VLAN, 1);
564 }
565
cpsw_slave_open(struct cpsw_slave * slave,struct cpsw_priv * priv)566 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
567 {
568 u32 slave_port;
569 struct phy_device *phy;
570 struct cpsw_common *cpsw = priv->cpsw;
571
572 cpsw_sl_reset(slave->mac_sl, 100);
573 cpsw_sl_ctl_reset(slave->mac_sl);
574
575 /* setup priority mapping */
576 cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_PRI_MAP,
577 RX_PRIORITY_MAPPING);
578
579 switch (cpsw->version) {
580 case CPSW_VERSION_1:
581 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
582 /* Increase RX FIFO size to 5 for supporting fullduplex
583 * flow control mode
584 */
585 slave_write(slave,
586 (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
587 CPSW_MAX_BLKS_RX, CPSW1_MAX_BLKS);
588 break;
589 case CPSW_VERSION_2:
590 case CPSW_VERSION_3:
591 case CPSW_VERSION_4:
592 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
593 /* Increase RX FIFO size to 5 for supporting fullduplex
594 * flow control mode
595 */
596 slave_write(slave,
597 (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
598 CPSW_MAX_BLKS_RX, CPSW2_MAX_BLKS);
599 break;
600 }
601
602 /* setup max packet size, and mac address */
603 cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_MAXLEN,
604 cpsw->rx_packet_max);
605 cpsw_set_slave_mac(slave, priv);
606
607 slave->mac_control = 0; /* no link yet */
608
609 slave_port = cpsw_get_slave_port(slave->slave_num);
610
611 if (cpsw->data.dual_emac)
612 cpsw_add_dual_emac_def_ale_entries(priv, slave, slave_port);
613 else
614 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
615 1 << slave_port, 0, 0, ALE_MCAST_FWD_2);
616
617 if (slave->data->phy_node) {
618 phy = of_phy_connect(priv->ndev, slave->data->phy_node,
619 &cpsw_adjust_link, 0, slave->data->phy_if);
620 if (!phy) {
621 dev_err(priv->dev, "phy \"%pOF\" not found on slave %d\n",
622 slave->data->phy_node,
623 slave->slave_num);
624 return;
625 }
626 } else {
627 phy = phy_connect(priv->ndev, slave->data->phy_id,
628 &cpsw_adjust_link, slave->data->phy_if);
629 if (IS_ERR(phy)) {
630 dev_err(priv->dev,
631 "phy \"%s\" not found on slave %d, err %ld\n",
632 slave->data->phy_id, slave->slave_num,
633 PTR_ERR(phy));
634 return;
635 }
636 }
637
638 phy->mac_managed_pm = true;
639
640 slave->phy = phy;
641
642 phy_disable_eee(slave->phy);
643
644 phy_attached_info(slave->phy);
645
646 phy_start(slave->phy);
647
648 /* Configure GMII_SEL register */
649 if (!IS_ERR(slave->data->ifphy))
650 phy_set_mode_ext(slave->data->ifphy, PHY_MODE_ETHERNET,
651 slave->data->phy_if);
652 else
653 cpsw_phy_sel(cpsw->dev, slave->phy->interface,
654 slave->slave_num);
655 }
656
cpsw_add_default_vlan(struct cpsw_priv * priv)657 static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)
658 {
659 struct cpsw_common *cpsw = priv->cpsw;
660 const int vlan = cpsw->data.default_vlan;
661 u32 reg;
662 int i;
663 int unreg_mcast_mask;
664
665 reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
666 CPSW2_PORT_VLAN;
667
668 writel(vlan, &cpsw->host_port_regs->port_vlan);
669
670 for (i = 0; i < cpsw->data.slaves; i++)
671 slave_write(cpsw->slaves + i, vlan, reg);
672
673 if (priv->ndev->flags & IFF_ALLMULTI)
674 unreg_mcast_mask = ALE_ALL_PORTS;
675 else
676 unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
677
678 cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS,
679 ALE_ALL_PORTS, ALE_ALL_PORTS,
680 unreg_mcast_mask);
681 }
682
cpsw_init_host_port(struct cpsw_priv * priv)683 static void cpsw_init_host_port(struct cpsw_priv *priv)
684 {
685 u32 fifo_mode;
686 u32 control_reg;
687 struct cpsw_common *cpsw = priv->cpsw;
688
689 /* soft reset the controller and initialize ale */
690 soft_reset("cpsw", &cpsw->regs->soft_reset);
691 cpsw_ale_start(cpsw->ale);
692
693 /* switch to vlan aware mode */
694 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_VLAN_AWARE,
695 CPSW_ALE_VLAN_AWARE);
696 control_reg = readl(&cpsw->regs->control);
697 control_reg |= CPSW_VLAN_AWARE | CPSW_RX_VLAN_ENCAP;
698 writel(control_reg, &cpsw->regs->control);
699 fifo_mode = (cpsw->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :
700 CPSW_FIFO_NORMAL_MODE;
701 writel(fifo_mode, &cpsw->host_port_regs->tx_in_ctl);
702
703 /* setup host port priority mapping */
704 writel_relaxed(CPDMA_TX_PRIORITY_MAP,
705 &cpsw->host_port_regs->cpdma_tx_pri_map);
706 writel_relaxed(0, &cpsw->host_port_regs->cpdma_rx_chan_map);
707
708 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
709 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
710
711 if (!cpsw->data.dual_emac) {
712 cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
713 0, 0);
714 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
715 ALE_PORT_HOST, 0, 0, ALE_MCAST_FWD_2);
716 }
717 }
718
cpsw_slave_stop(struct cpsw_slave * slave,struct cpsw_common * cpsw)719 static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_common *cpsw)
720 {
721 u32 slave_port;
722
723 slave_port = cpsw_get_slave_port(slave->slave_num);
724
725 if (!slave->phy)
726 return;
727 phy_stop(slave->phy);
728 phy_disconnect(slave->phy);
729 slave->phy = NULL;
730 cpsw_ale_control_set(cpsw->ale, slave_port,
731 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
732 cpsw_sl_reset(slave->mac_sl, 100);
733 cpsw_sl_ctl_reset(slave->mac_sl);
734 }
735
cpsw_restore_vlans(struct net_device * vdev,int vid,void * arg)736 static int cpsw_restore_vlans(struct net_device *vdev, int vid, void *arg)
737 {
738 struct cpsw_priv *priv = arg;
739
740 if (!vdev)
741 return 0;
742
743 cpsw_ndo_vlan_rx_add_vid(priv->ndev, 0, vid);
744 return 0;
745 }
746
747 /* restore resources after port reset */
cpsw_restore(struct cpsw_priv * priv)748 static void cpsw_restore(struct cpsw_priv *priv)
749 {
750 /* restore vlan configurations */
751 vlan_for_each(priv->ndev, cpsw_restore_vlans, priv);
752
753 /* restore MQPRIO offload */
754 for_each_slave(priv, cpsw_mqprio_resume, priv);
755
756 /* restore CBS offload */
757 for_each_slave(priv, cpsw_cbs_resume, priv);
758 }
759
cpsw_ndo_open(struct net_device * ndev)760 static int cpsw_ndo_open(struct net_device *ndev)
761 {
762 struct cpsw_priv *priv = netdev_priv(ndev);
763 struct cpsw_common *cpsw = priv->cpsw;
764 int ret;
765 u32 reg;
766
767 ret = pm_runtime_resume_and_get(cpsw->dev);
768 if (ret < 0)
769 return ret;
770
771 netif_carrier_off(ndev);
772
773 /* Notify the stack of the actual queue counts. */
774 ret = netif_set_real_num_tx_queues(ndev, cpsw->tx_ch_num);
775 if (ret) {
776 dev_err(priv->dev, "cannot set real number of tx queues\n");
777 goto err_cleanup;
778 }
779
780 ret = netif_set_real_num_rx_queues(ndev, cpsw->rx_ch_num);
781 if (ret) {
782 dev_err(priv->dev, "cannot set real number of rx queues\n");
783 goto err_cleanup;
784 }
785
786 reg = cpsw->version;
787
788 dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
789 CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
790 CPSW_RTL_VERSION(reg));
791
792 /* Initialize host and slave ports */
793 if (!cpsw->usage_count)
794 cpsw_init_host_port(priv);
795 for_each_slave(priv, cpsw_slave_open, priv);
796
797 /* Add default VLAN */
798 if (!cpsw->data.dual_emac)
799 cpsw_add_default_vlan(priv);
800 else
801 cpsw_ale_add_vlan(cpsw->ale, cpsw->data.default_vlan,
802 ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0);
803
804 /* initialize shared resources for every ndev */
805 if (!cpsw->usage_count) {
806 /* disable priority elevation */
807 writel_relaxed(0, &cpsw->regs->ptype);
808
809 /* enable statistics collection only on all ports */
810 writel_relaxed(0x7, &cpsw->regs->stat_port_en);
811
812 /* Enable internal fifo flow control */
813 writel(0x7, &cpsw->regs->flow_control);
814
815 napi_enable(&cpsw->napi_rx);
816 napi_enable(&cpsw->napi_tx);
817
818 if (cpsw->tx_irq_disabled) {
819 cpsw->tx_irq_disabled = false;
820 enable_irq(cpsw->irqs_table[1]);
821 }
822
823 if (cpsw->rx_irq_disabled) {
824 cpsw->rx_irq_disabled = false;
825 enable_irq(cpsw->irqs_table[0]);
826 }
827
828 /* create rxqs for both infs in dual mac as they use same pool
829 * and must be destroyed together when no users.
830 */
831 ret = cpsw_create_xdp_rxqs(cpsw);
832 if (ret < 0)
833 goto err_cleanup;
834
835 ret = cpsw_fill_rx_channels(priv);
836 if (ret < 0)
837 goto err_cleanup;
838
839 if (cpsw->cpts) {
840 if (cpts_register(cpsw->cpts))
841 dev_err(priv->dev, "error registering cpts device\n");
842 else
843 writel(0x10, &cpsw->wr_regs->misc_en);
844 }
845 }
846
847 cpsw_restore(priv);
848
849 /* Enable Interrupt pacing if configured */
850 if (cpsw->coal_intvl != 0) {
851 struct ethtool_coalesce coal;
852
853 coal.rx_coalesce_usecs = cpsw->coal_intvl;
854 cpsw_set_coalesce(ndev, &coal, NULL, NULL);
855 }
856
857 cpdma_ctlr_start(cpsw->dma);
858 cpsw_intr_enable(cpsw);
859 cpsw->usage_count++;
860
861 return 0;
862
863 err_cleanup:
864 if (!cpsw->usage_count) {
865 napi_disable(&cpsw->napi_rx);
866 napi_disable(&cpsw->napi_tx);
867 cpdma_ctlr_stop(cpsw->dma);
868 cpsw_destroy_xdp_rxqs(cpsw);
869 }
870
871 for_each_slave(priv, cpsw_slave_stop, cpsw);
872 pm_runtime_put_sync(cpsw->dev);
873 netif_carrier_off(priv->ndev);
874 return ret;
875 }
876
cpsw_ndo_stop(struct net_device * ndev)877 static int cpsw_ndo_stop(struct net_device *ndev)
878 {
879 struct cpsw_priv *priv = netdev_priv(ndev);
880 struct cpsw_common *cpsw = priv->cpsw;
881
882 cpsw_info(priv, ifdown, "shutting down cpsw device\n");
883 __hw_addr_ref_unsync_dev(&ndev->mc, ndev, cpsw_purge_all_mc);
884 netif_tx_stop_all_queues(priv->ndev);
885 netif_carrier_off(priv->ndev);
886
887 if (cpsw->usage_count <= 1) {
888 napi_disable(&cpsw->napi_rx);
889 napi_disable(&cpsw->napi_tx);
890 cpts_unregister(cpsw->cpts);
891 cpsw_intr_disable(cpsw);
892 cpdma_ctlr_stop(cpsw->dma);
893 cpsw_ale_stop(cpsw->ale);
894 cpsw_destroy_xdp_rxqs(cpsw);
895 }
896 for_each_slave(priv, cpsw_slave_stop, cpsw);
897
898 if (cpsw_need_resplit(cpsw))
899 cpsw_split_res(cpsw);
900
901 cpsw->usage_count--;
902 pm_runtime_put_sync(cpsw->dev);
903 return 0;
904 }
905
cpsw_ndo_start_xmit(struct sk_buff * skb,struct net_device * ndev)906 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
907 struct net_device *ndev)
908 {
909 struct cpsw_priv *priv = netdev_priv(ndev);
910 struct cpsw_common *cpsw = priv->cpsw;
911 struct cpts *cpts = cpsw->cpts;
912 struct netdev_queue *txq;
913 struct cpdma_chan *txch;
914 int ret, q_idx;
915
916 if (skb_put_padto(skb, CPSW_MIN_PACKET_SIZE)) {
917 cpsw_err(priv, tx_err, "packet pad failed\n");
918 ndev->stats.tx_dropped++;
919 return NET_XMIT_DROP;
920 }
921
922 if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
923 priv->tx_ts_enabled && cpts_can_timestamp(cpts, skb))
924 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
925
926 q_idx = skb_get_queue_mapping(skb);
927 if (q_idx >= cpsw->tx_ch_num)
928 q_idx = q_idx % cpsw->tx_ch_num;
929
930 txch = cpsw->txv[q_idx].ch;
931 txq = netdev_get_tx_queue(ndev, q_idx);
932 skb_tx_timestamp(skb);
933 ret = cpdma_chan_submit(txch, skb, skb->data, skb->len,
934 priv->emac_port + cpsw->data.dual_emac);
935 if (unlikely(ret != 0)) {
936 cpsw_err(priv, tx_err, "desc submit failed\n");
937 goto fail;
938 }
939
940 /* If there is no more tx desc left free then we need to
941 * tell the kernel to stop sending us tx frames.
942 */
943 if (unlikely(!cpdma_check_free_tx_desc(txch))) {
944 netif_tx_stop_queue(txq);
945
946 /* Barrier, so that stop_queue visible to other cpus */
947 smp_mb__after_atomic();
948
949 if (cpdma_check_free_tx_desc(txch))
950 netif_tx_wake_queue(txq);
951 }
952
953 return NETDEV_TX_OK;
954 fail:
955 ndev->stats.tx_dropped++;
956 netif_tx_stop_queue(txq);
957
958 /* Barrier, so that stop_queue visible to other cpus */
959 smp_mb__after_atomic();
960
961 if (cpdma_check_free_tx_desc(txch))
962 netif_tx_wake_queue(txq);
963
964 return NETDEV_TX_BUSY;
965 }
966
cpsw_ndo_set_mac_address(struct net_device * ndev,void * p)967 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
968 {
969 struct cpsw_priv *priv = netdev_priv(ndev);
970 struct sockaddr *addr = (struct sockaddr *)p;
971 struct cpsw_common *cpsw = priv->cpsw;
972 int flags = 0;
973 u16 vid = 0;
974 int ret;
975
976 if (!is_valid_ether_addr(addr->sa_data))
977 return -EADDRNOTAVAIL;
978
979 ret = pm_runtime_resume_and_get(cpsw->dev);
980 if (ret < 0)
981 return ret;
982
983 if (cpsw->data.dual_emac) {
984 vid = cpsw->slaves[priv->emac_port].port_vlan;
985 flags = ALE_VLAN;
986 }
987
988 cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
989 flags, vid);
990 cpsw_ale_add_ucast(cpsw->ale, addr->sa_data, HOST_PORT_NUM,
991 flags, vid);
992
993 memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
994 eth_hw_addr_set(ndev, priv->mac_addr);
995 for_each_slave(priv, cpsw_set_slave_mac, priv);
996
997 pm_runtime_put(cpsw->dev);
998
999 return 0;
1000 }
1001
cpsw_add_vlan_ale_entry(struct cpsw_priv * priv,unsigned short vid)1002 static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
1003 unsigned short vid)
1004 {
1005 int ret;
1006 int unreg_mcast_mask = 0;
1007 int mcast_mask;
1008 u32 port_mask;
1009 struct cpsw_common *cpsw = priv->cpsw;
1010
1011 if (cpsw->data.dual_emac) {
1012 port_mask = (1 << (priv->emac_port + 1)) | ALE_PORT_HOST;
1013
1014 mcast_mask = ALE_PORT_HOST;
1015 if (priv->ndev->flags & IFF_ALLMULTI)
1016 unreg_mcast_mask = mcast_mask;
1017 } else {
1018 port_mask = ALE_ALL_PORTS;
1019 mcast_mask = port_mask;
1020
1021 if (priv->ndev->flags & IFF_ALLMULTI)
1022 unreg_mcast_mask = ALE_ALL_PORTS;
1023 else
1024 unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
1025 }
1026
1027 ret = cpsw_ale_add_vlan(cpsw->ale, vid, port_mask, 0, port_mask,
1028 unreg_mcast_mask);
1029 if (ret != 0)
1030 return ret;
1031
1032 ret = cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
1033 HOST_PORT_NUM, ALE_VLAN, vid);
1034 if (ret != 0)
1035 goto clean_vid;
1036
1037 ret = cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
1038 mcast_mask, ALE_VLAN, vid, 0);
1039 if (ret != 0)
1040 goto clean_vlan_ucast;
1041 return 0;
1042
1043 clean_vlan_ucast:
1044 cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1045 HOST_PORT_NUM, ALE_VLAN, vid);
1046 clean_vid:
1047 cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1048 return ret;
1049 }
1050
cpsw_ndo_vlan_rx_add_vid(struct net_device * ndev,__be16 proto,u16 vid)1051 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1052 __be16 proto, u16 vid)
1053 {
1054 struct cpsw_priv *priv = netdev_priv(ndev);
1055 struct cpsw_common *cpsw = priv->cpsw;
1056 int ret;
1057
1058 if (vid == cpsw->data.default_vlan)
1059 return 0;
1060
1061 ret = pm_runtime_resume_and_get(cpsw->dev);
1062 if (ret < 0)
1063 return ret;
1064
1065 if (cpsw->data.dual_emac) {
1066 /* In dual EMAC, reserved VLAN id should not be used for
1067 * creating VLAN interfaces as this can break the dual
1068 * EMAC port separation
1069 */
1070 int i;
1071
1072 for (i = 0; i < cpsw->data.slaves; i++) {
1073 if (vid == cpsw->slaves[i].port_vlan) {
1074 ret = -EINVAL;
1075 goto err;
1076 }
1077 }
1078 }
1079
1080 dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1081 ret = cpsw_add_vlan_ale_entry(priv, vid);
1082 err:
1083 pm_runtime_put(cpsw->dev);
1084 return ret;
1085 }
1086
cpsw_ndo_vlan_rx_kill_vid(struct net_device * ndev,__be16 proto,u16 vid)1087 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1088 __be16 proto, u16 vid)
1089 {
1090 struct cpsw_priv *priv = netdev_priv(ndev);
1091 struct cpsw_common *cpsw = priv->cpsw;
1092 int ret;
1093
1094 if (vid == cpsw->data.default_vlan)
1095 return 0;
1096
1097 ret = pm_runtime_resume_and_get(cpsw->dev);
1098 if (ret < 0)
1099 return ret;
1100
1101 if (cpsw->data.dual_emac) {
1102 int i;
1103
1104 for (i = 0; i < cpsw->data.slaves; i++) {
1105 if (vid == cpsw->slaves[i].port_vlan)
1106 goto err;
1107 }
1108 }
1109
1110 dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1111 ret = cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1112 ret |= cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1113 HOST_PORT_NUM, ALE_VLAN, vid);
1114 ret |= cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
1115 0, ALE_VLAN, vid);
1116 ret |= cpsw_ale_flush_multicast(cpsw->ale, ALE_PORT_HOST, vid);
1117 err:
1118 pm_runtime_put(cpsw->dev);
1119 return ret;
1120 }
1121
cpsw_ndo_xdp_xmit(struct net_device * ndev,int n,struct xdp_frame ** frames,u32 flags)1122 static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n,
1123 struct xdp_frame **frames, u32 flags)
1124 {
1125 struct cpsw_priv *priv = netdev_priv(ndev);
1126 struct cpsw_common *cpsw = priv->cpsw;
1127 struct xdp_frame *xdpf;
1128 int i, nxmit = 0, port;
1129
1130 if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
1131 return -EINVAL;
1132
1133 for (i = 0; i < n; i++) {
1134 xdpf = frames[i];
1135 if (xdpf->len < CPSW_MIN_PACKET_SIZE)
1136 break;
1137
1138 port = priv->emac_port + cpsw->data.dual_emac;
1139 if (cpsw_xdp_tx_frame(priv, xdpf, NULL, port))
1140 break;
1141 nxmit++;
1142 }
1143
1144 return nxmit;
1145 }
1146
1147 #ifdef CONFIG_NET_POLL_CONTROLLER
cpsw_ndo_poll_controller(struct net_device * ndev)1148 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1149 {
1150 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1151
1152 cpsw_intr_disable(cpsw);
1153 cpsw_rx_interrupt(cpsw->irqs_table[0], cpsw);
1154 cpsw_tx_interrupt(cpsw->irqs_table[1], cpsw);
1155 cpsw_intr_enable(cpsw);
1156 }
1157 #endif
1158
1159 static const struct net_device_ops cpsw_netdev_ops = {
1160 .ndo_open = cpsw_ndo_open,
1161 .ndo_stop = cpsw_ndo_stop,
1162 .ndo_start_xmit = cpsw_ndo_start_xmit,
1163 .ndo_set_mac_address = cpsw_ndo_set_mac_address,
1164 .ndo_eth_ioctl = cpsw_ndo_ioctl,
1165 .ndo_validate_addr = eth_validate_addr,
1166 .ndo_tx_timeout = cpsw_ndo_tx_timeout,
1167 .ndo_set_rx_mode = cpsw_ndo_set_rx_mode,
1168 .ndo_set_tx_maxrate = cpsw_ndo_set_tx_maxrate,
1169 #ifdef CONFIG_NET_POLL_CONTROLLER
1170 .ndo_poll_controller = cpsw_ndo_poll_controller,
1171 #endif
1172 .ndo_vlan_rx_add_vid = cpsw_ndo_vlan_rx_add_vid,
1173 .ndo_vlan_rx_kill_vid = cpsw_ndo_vlan_rx_kill_vid,
1174 .ndo_setup_tc = cpsw_ndo_setup_tc,
1175 .ndo_bpf = cpsw_ndo_bpf,
1176 .ndo_xdp_xmit = cpsw_ndo_xdp_xmit,
1177 };
1178
cpsw_get_drvinfo(struct net_device * ndev,struct ethtool_drvinfo * info)1179 static void cpsw_get_drvinfo(struct net_device *ndev,
1180 struct ethtool_drvinfo *info)
1181 {
1182 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1183 struct platform_device *pdev = to_platform_device(cpsw->dev);
1184
1185 strscpy(info->driver, "cpsw", sizeof(info->driver));
1186 strscpy(info->version, "1.0", sizeof(info->version));
1187 strscpy(info->bus_info, pdev->name, sizeof(info->bus_info));
1188 }
1189
cpsw_set_pauseparam(struct net_device * ndev,struct ethtool_pauseparam * pause)1190 static int cpsw_set_pauseparam(struct net_device *ndev,
1191 struct ethtool_pauseparam *pause)
1192 {
1193 struct cpsw_priv *priv = netdev_priv(ndev);
1194 bool link;
1195
1196 priv->rx_pause = pause->rx_pause ? true : false;
1197 priv->tx_pause = pause->tx_pause ? true : false;
1198
1199 for_each_slave(priv, _cpsw_adjust_link, priv, &link);
1200 return 0;
1201 }
1202
cpsw_set_channels(struct net_device * ndev,struct ethtool_channels * chs)1203 static int cpsw_set_channels(struct net_device *ndev,
1204 struct ethtool_channels *chs)
1205 {
1206 return cpsw_set_channels_common(ndev, chs, cpsw_rx_handler);
1207 }
1208
1209 static const struct ethtool_ops cpsw_ethtool_ops = {
1210 .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
1211 .get_drvinfo = cpsw_get_drvinfo,
1212 .get_msglevel = cpsw_get_msglevel,
1213 .set_msglevel = cpsw_set_msglevel,
1214 .get_link = ethtool_op_get_link,
1215 .get_ts_info = cpsw_get_ts_info,
1216 .get_coalesce = cpsw_get_coalesce,
1217 .set_coalesce = cpsw_set_coalesce,
1218 .get_sset_count = cpsw_get_sset_count,
1219 .get_strings = cpsw_get_strings,
1220 .get_ethtool_stats = cpsw_get_ethtool_stats,
1221 .get_pauseparam = cpsw_get_pauseparam,
1222 .set_pauseparam = cpsw_set_pauseparam,
1223 .get_wol = cpsw_get_wol,
1224 .set_wol = cpsw_set_wol,
1225 .get_regs_len = cpsw_get_regs_len,
1226 .get_regs = cpsw_get_regs,
1227 .begin = cpsw_ethtool_op_begin,
1228 .complete = cpsw_ethtool_op_complete,
1229 .get_channels = cpsw_get_channels,
1230 .set_channels = cpsw_set_channels,
1231 .get_link_ksettings = cpsw_get_link_ksettings,
1232 .set_link_ksettings = cpsw_set_link_ksettings,
1233 .get_eee = cpsw_get_eee,
1234 .nway_reset = cpsw_nway_reset,
1235 .get_ringparam = cpsw_get_ringparam,
1236 .set_ringparam = cpsw_set_ringparam,
1237 };
1238
cpsw_probe_dt(struct cpsw_platform_data * data,struct platform_device * pdev)1239 static int cpsw_probe_dt(struct cpsw_platform_data *data,
1240 struct platform_device *pdev)
1241 {
1242 struct device_node *node = pdev->dev.of_node;
1243 struct device_node *slave_node;
1244 int i = 0, ret;
1245 u32 prop;
1246
1247 if (!node)
1248 return -EINVAL;
1249
1250 if (of_property_read_u32(node, "slaves", &prop)) {
1251 dev_err(&pdev->dev, "Missing slaves property in the DT.\n");
1252 return -EINVAL;
1253 }
1254 data->slaves = prop;
1255
1256 if (of_property_read_u32(node, "active_slave", &prop)) {
1257 dev_err(&pdev->dev, "Missing active_slave property in the DT.\n");
1258 return -EINVAL;
1259 }
1260 data->active_slave = prop;
1261
1262 data->slave_data = devm_kcalloc(&pdev->dev,
1263 data->slaves,
1264 sizeof(struct cpsw_slave_data),
1265 GFP_KERNEL);
1266 if (!data->slave_data)
1267 return -ENOMEM;
1268
1269 if (of_property_read_u32(node, "cpdma_channels", &prop)) {
1270 dev_err(&pdev->dev, "Missing cpdma_channels property in the DT.\n");
1271 return -EINVAL;
1272 }
1273 data->channels = prop;
1274
1275 if (of_property_read_u32(node, "bd_ram_size", &prop)) {
1276 dev_err(&pdev->dev, "Missing bd_ram_size property in the DT.\n");
1277 return -EINVAL;
1278 }
1279 data->bd_ram_size = prop;
1280
1281 if (of_property_read_u32(node, "mac_control", &prop)) {
1282 dev_err(&pdev->dev, "Missing mac_control property in the DT.\n");
1283 return -EINVAL;
1284 }
1285 data->mac_control = prop;
1286
1287 if (of_property_read_bool(node, "dual_emac"))
1288 data->dual_emac = true;
1289
1290 /*
1291 * Populate all the child nodes here...
1292 */
1293 ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
1294 /* We do not want to force this, as in some cases may not have child */
1295 if (ret)
1296 dev_warn(&pdev->dev, "Doesn't have any child node\n");
1297
1298 for_each_available_child_of_node(node, slave_node) {
1299 struct cpsw_slave_data *slave_data = data->slave_data + i;
1300 int lenp;
1301 const __be32 *parp;
1302
1303 /* This is no slave child node, continue */
1304 if (!of_node_name_eq(slave_node, "slave"))
1305 continue;
1306
1307 slave_data->ifphy = devm_of_phy_get(&pdev->dev, slave_node,
1308 NULL);
1309 if (!IS_ENABLED(CONFIG_TI_CPSW_PHY_SEL) &&
1310 IS_ERR(slave_data->ifphy)) {
1311 ret = PTR_ERR(slave_data->ifphy);
1312 dev_err(&pdev->dev,
1313 "%d: Error retrieving port phy: %d\n", i, ret);
1314 goto err_node_put;
1315 }
1316
1317 slave_data->slave_node = slave_node;
1318 slave_data->phy_node = of_parse_phandle(slave_node,
1319 "phy-handle", 0);
1320 parp = of_get_property(slave_node, "phy_id", &lenp);
1321 if (slave_data->phy_node) {
1322 dev_dbg(&pdev->dev,
1323 "slave[%d] using phy-handle=\"%pOF\"\n",
1324 i, slave_data->phy_node);
1325 } else if (of_phy_is_fixed_link(slave_node)) {
1326 /* In the case of a fixed PHY, the DT node associated
1327 * to the PHY is the Ethernet MAC DT node.
1328 */
1329 ret = of_phy_register_fixed_link(slave_node);
1330 if (ret) {
1331 dev_err_probe(&pdev->dev, ret, "failed to register fixed-link phy\n");
1332 goto err_node_put;
1333 }
1334 slave_data->phy_node = of_node_get(slave_node);
1335 } else if (parp) {
1336 u32 phyid;
1337 struct device_node *mdio_node;
1338 struct platform_device *mdio;
1339
1340 if (lenp != (sizeof(__be32) * 2)) {
1341 dev_err(&pdev->dev, "Invalid slave[%d] phy_id property\n", i);
1342 goto no_phy_slave;
1343 }
1344 mdio_node = of_find_node_by_phandle(be32_to_cpup(parp));
1345 phyid = be32_to_cpup(parp+1);
1346 mdio = of_find_device_by_node(mdio_node);
1347 of_node_put(mdio_node);
1348 if (!mdio) {
1349 dev_err(&pdev->dev, "Missing mdio platform device\n");
1350 ret = -EINVAL;
1351 goto err_node_put;
1352 }
1353 snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
1354 PHY_ID_FMT, mdio->name, phyid);
1355 put_device(&mdio->dev);
1356 } else {
1357 dev_err(&pdev->dev,
1358 "No slave[%d] phy_id, phy-handle, or fixed-link property\n",
1359 i);
1360 goto no_phy_slave;
1361 }
1362 ret = of_get_phy_mode(slave_node, &slave_data->phy_if);
1363 if (ret) {
1364 dev_err(&pdev->dev, "Missing or malformed slave[%d] phy-mode property\n",
1365 i);
1366 goto err_node_put;
1367 }
1368
1369 no_phy_slave:
1370 ret = of_get_mac_address(slave_node, slave_data->mac_addr);
1371 if (ret) {
1372 ret = ti_cm_get_macid(&pdev->dev, i,
1373 slave_data->mac_addr);
1374 if (ret)
1375 goto err_node_put;
1376 }
1377 if (data->dual_emac) {
1378 if (of_property_read_u32(slave_node, "dual_emac_res_vlan",
1379 &prop)) {
1380 dev_err(&pdev->dev, "Missing dual_emac_res_vlan in DT.\n");
1381 slave_data->dual_emac_res_vlan = i+1;
1382 dev_err(&pdev->dev, "Using %d as Reserved VLAN for %d slave\n",
1383 slave_data->dual_emac_res_vlan, i);
1384 } else {
1385 slave_data->dual_emac_res_vlan = prop;
1386 }
1387 }
1388
1389 i++;
1390 if (i == data->slaves) {
1391 ret = 0;
1392 goto err_node_put;
1393 }
1394 }
1395
1396 return 0;
1397
1398 err_node_put:
1399 of_node_put(slave_node);
1400 return ret;
1401 }
1402
cpsw_remove_dt(struct platform_device * pdev)1403 static void cpsw_remove_dt(struct platform_device *pdev)
1404 {
1405 struct cpsw_common *cpsw = platform_get_drvdata(pdev);
1406 struct cpsw_platform_data *data = &cpsw->data;
1407 struct device_node *node = pdev->dev.of_node;
1408 struct device_node *slave_node;
1409 int i = 0;
1410
1411 for_each_available_child_of_node(node, slave_node) {
1412 struct cpsw_slave_data *slave_data = &data->slave_data[i];
1413
1414 if (!of_node_name_eq(slave_node, "slave"))
1415 continue;
1416
1417 if (of_phy_is_fixed_link(slave_node))
1418 of_phy_deregister_fixed_link(slave_node);
1419
1420 of_node_put(slave_data->phy_node);
1421
1422 i++;
1423 if (i == data->slaves) {
1424 of_node_put(slave_node);
1425 break;
1426 }
1427 }
1428
1429 of_platform_depopulate(&pdev->dev);
1430 }
1431
cpsw_probe_dual_emac(struct cpsw_priv * priv)1432 static int cpsw_probe_dual_emac(struct cpsw_priv *priv)
1433 {
1434 struct cpsw_common *cpsw = priv->cpsw;
1435 struct cpsw_platform_data *data = &cpsw->data;
1436 struct net_device *ndev;
1437 struct cpsw_priv *priv_sl2;
1438 int ret = 0;
1439
1440 ndev = devm_alloc_etherdev_mqs(cpsw->dev, sizeof(struct cpsw_priv),
1441 CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);
1442 if (!ndev) {
1443 dev_err(cpsw->dev, "cpsw: error allocating net_device\n");
1444 return -ENOMEM;
1445 }
1446
1447 priv_sl2 = netdev_priv(ndev);
1448 priv_sl2->cpsw = cpsw;
1449 priv_sl2->ndev = ndev;
1450 priv_sl2->dev = &ndev->dev;
1451 priv_sl2->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1452
1453 if (is_valid_ether_addr(data->slave_data[1].mac_addr)) {
1454 memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,
1455 ETH_ALEN);
1456 dev_info(cpsw->dev, "cpsw: Detected MACID = %pM\n",
1457 priv_sl2->mac_addr);
1458 } else {
1459 eth_random_addr(priv_sl2->mac_addr);
1460 dev_info(cpsw->dev, "cpsw: Random MACID = %pM\n",
1461 priv_sl2->mac_addr);
1462 }
1463 eth_hw_addr_set(ndev, priv_sl2->mac_addr);
1464
1465 priv_sl2->emac_port = 1;
1466 cpsw->slaves[1].ndev = ndev;
1467 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
1468 ndev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
1469 NETDEV_XDP_ACT_NDO_XMIT;
1470
1471 ndev->netdev_ops = &cpsw_netdev_ops;
1472 ndev->ethtool_ops = &cpsw_ethtool_ops;
1473
1474 /* register the network device */
1475 SET_NETDEV_DEV(ndev, cpsw->dev);
1476 ndev->dev.of_node = cpsw->slaves[1].data->slave_node;
1477 ret = register_netdev(ndev);
1478 if (ret)
1479 dev_err(cpsw->dev, "cpsw: error registering net device\n");
1480
1481 return ret;
1482 }
1483
1484 static const struct of_device_id cpsw_of_mtable[] = {
1485 { .compatible = "ti,cpsw"},
1486 { .compatible = "ti,am335x-cpsw"},
1487 { .compatible = "ti,am4372-cpsw"},
1488 { .compatible = "ti,dra7-cpsw"},
1489 { /* sentinel */ },
1490 };
1491 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
1492
1493 static const struct soc_device_attribute cpsw_soc_devices[] = {
1494 { .family = "AM33xx", .revision = "ES1.0"},
1495 { /* sentinel */ }
1496 };
1497
cpsw_probe(struct platform_device * pdev)1498 static int cpsw_probe(struct platform_device *pdev)
1499 {
1500 struct device *dev = &pdev->dev;
1501 struct clk *clk;
1502 struct cpsw_platform_data *data;
1503 struct net_device *ndev;
1504 struct cpsw_priv *priv;
1505 void __iomem *ss_regs;
1506 struct resource *ss_res;
1507 struct gpio_descs *mode;
1508 const struct soc_device_attribute *soc;
1509 struct cpsw_common *cpsw;
1510 int ret = 0, ch;
1511 int irq;
1512
1513 cpsw = devm_kzalloc(dev, sizeof(struct cpsw_common), GFP_KERNEL);
1514 if (!cpsw)
1515 return -ENOMEM;
1516
1517 platform_set_drvdata(pdev, cpsw);
1518 cpsw_slave_index = cpsw_slave_index_priv;
1519
1520 cpsw->dev = dev;
1521
1522 mode = devm_gpiod_get_array_optional(dev, "mode", GPIOD_OUT_LOW);
1523 if (IS_ERR(mode)) {
1524 ret = PTR_ERR(mode);
1525 dev_err(dev, "gpio request failed, ret %d\n", ret);
1526 return ret;
1527 }
1528
1529 clk = devm_clk_get(dev, "fck");
1530 if (IS_ERR(clk)) {
1531 ret = PTR_ERR(clk);
1532 dev_err(dev, "fck is not found %d\n", ret);
1533 return ret;
1534 }
1535 cpsw->bus_freq_mhz = clk_get_rate(clk) / 1000000;
1536
1537 ss_regs = devm_platform_get_and_ioremap_resource(pdev, 0, &ss_res);
1538 if (IS_ERR(ss_regs))
1539 return PTR_ERR(ss_regs);
1540 cpsw->regs = ss_regs;
1541
1542 cpsw->wr_regs = devm_platform_ioremap_resource(pdev, 1);
1543 if (IS_ERR(cpsw->wr_regs))
1544 return PTR_ERR(cpsw->wr_regs);
1545
1546 /* RX IRQ */
1547 irq = platform_get_irq(pdev, 1);
1548 if (irq < 0)
1549 return irq;
1550 cpsw->irqs_table[0] = irq;
1551
1552 /* TX IRQ */
1553 irq = platform_get_irq(pdev, 2);
1554 if (irq < 0)
1555 return irq;
1556 cpsw->irqs_table[1] = irq;
1557
1558 /* get misc irq*/
1559 irq = platform_get_irq(pdev, 3);
1560 if (irq <= 0)
1561 return irq;
1562 cpsw->misc_irq = irq;
1563
1564 /*
1565 * This may be required here for child devices.
1566 */
1567 pm_runtime_enable(dev);
1568
1569 /* Need to enable clocks with runtime PM api to access module
1570 * registers
1571 */
1572 ret = pm_runtime_resume_and_get(dev);
1573 if (ret < 0)
1574 goto clean_runtime_disable_ret;
1575
1576 ret = cpsw_probe_dt(&cpsw->data, pdev);
1577 if (ret)
1578 goto clean_dt_ret;
1579
1580 soc = soc_device_match(cpsw_soc_devices);
1581 if (soc)
1582 cpsw->quirk_irq = true;
1583
1584 data = &cpsw->data;
1585 cpsw->slaves = devm_kcalloc(dev,
1586 data->slaves, sizeof(struct cpsw_slave),
1587 GFP_KERNEL);
1588 if (!cpsw->slaves) {
1589 ret = -ENOMEM;
1590 goto clean_dt_ret;
1591 }
1592
1593 cpsw->rx_packet_max = max(rx_packet_max, CPSW_MAX_PACKET_SIZE);
1594 cpsw->descs_pool_size = descs_pool_size;
1595
1596 ret = cpsw_init_common(cpsw, ss_regs, ale_ageout,
1597 ss_res->start + CPSW2_BD_OFFSET,
1598 descs_pool_size);
1599 if (ret)
1600 goto clean_dt_ret;
1601
1602 ch = cpsw->quirk_irq ? 0 : 7;
1603 cpsw->txv[0].ch = cpdma_chan_create(cpsw->dma, ch, cpsw_tx_handler, 0);
1604 if (IS_ERR(cpsw->txv[0].ch)) {
1605 dev_err(dev, "error initializing tx dma channel\n");
1606 ret = PTR_ERR(cpsw->txv[0].ch);
1607 goto clean_cpts;
1608 }
1609
1610 cpsw->rxv[0].ch = cpdma_chan_create(cpsw->dma, 0, cpsw_rx_handler, 1);
1611 if (IS_ERR(cpsw->rxv[0].ch)) {
1612 dev_err(dev, "error initializing rx dma channel\n");
1613 ret = PTR_ERR(cpsw->rxv[0].ch);
1614 goto clean_cpts;
1615 }
1616 cpsw_split_res(cpsw);
1617
1618 /* setup netdev */
1619 ndev = devm_alloc_etherdev_mqs(dev, sizeof(struct cpsw_priv),
1620 CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);
1621 if (!ndev) {
1622 dev_err(dev, "error allocating net_device\n");
1623 ret = -ENOMEM;
1624 goto clean_cpts;
1625 }
1626
1627 priv = netdev_priv(ndev);
1628 priv->cpsw = cpsw;
1629 priv->ndev = ndev;
1630 priv->dev = dev;
1631 priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1632 priv->emac_port = 0;
1633
1634 if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {
1635 memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
1636 dev_info(dev, "Detected MACID = %pM\n", priv->mac_addr);
1637 } else {
1638 eth_random_addr(priv->mac_addr);
1639 dev_info(dev, "Random MACID = %pM\n", priv->mac_addr);
1640 }
1641
1642 eth_hw_addr_set(ndev, priv->mac_addr);
1643
1644 cpsw->slaves[0].ndev = ndev;
1645
1646 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
1647 ndev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
1648 NETDEV_XDP_ACT_NDO_XMIT;
1649
1650 ndev->netdev_ops = &cpsw_netdev_ops;
1651 ndev->ethtool_ops = &cpsw_ethtool_ops;
1652 netif_napi_add(ndev, &cpsw->napi_rx,
1653 cpsw->quirk_irq ? cpsw_rx_poll : cpsw_rx_mq_poll);
1654 netif_napi_add_tx(ndev, &cpsw->napi_tx,
1655 cpsw->quirk_irq ? cpsw_tx_poll : cpsw_tx_mq_poll);
1656
1657 /* register the network device */
1658 SET_NETDEV_DEV(ndev, dev);
1659 ndev->dev.of_node = cpsw->slaves[0].data->slave_node;
1660 ret = register_netdev(ndev);
1661 if (ret) {
1662 dev_err(dev, "error registering net device\n");
1663 ret = -ENODEV;
1664 goto clean_cpts;
1665 }
1666
1667 if (cpsw->data.dual_emac) {
1668 ret = cpsw_probe_dual_emac(priv);
1669 if (ret) {
1670 cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
1671 goto clean_unregister_netdev_ret;
1672 }
1673 }
1674
1675 /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
1676 * MISC IRQs which are always kept disabled with this driver so
1677 * we will not request them.
1678 *
1679 * If anyone wants to implement support for those, make sure to
1680 * first request and append them to irqs_table array.
1681 */
1682 ret = devm_request_irq(dev, cpsw->irqs_table[0], cpsw_rx_interrupt,
1683 0, dev_name(dev), cpsw);
1684 if (ret < 0) {
1685 dev_err(dev, "error attaching irq (%d)\n", ret);
1686 goto clean_unregister_netdev_ret;
1687 }
1688
1689
1690 ret = devm_request_irq(dev, cpsw->irqs_table[1], cpsw_tx_interrupt,
1691 0, dev_name(&pdev->dev), cpsw);
1692 if (ret < 0) {
1693 dev_err(dev, "error attaching irq (%d)\n", ret);
1694 goto clean_unregister_netdev_ret;
1695 }
1696
1697 if (!cpsw->cpts)
1698 goto skip_cpts;
1699
1700 ret = devm_request_irq(&pdev->dev, cpsw->misc_irq, cpsw_misc_interrupt,
1701 0, dev_name(&pdev->dev), cpsw);
1702 if (ret < 0) {
1703 dev_err(dev, "error attaching misc irq (%d)\n", ret);
1704 goto clean_unregister_netdev_ret;
1705 }
1706
1707 /* Enable misc CPTS evnt_pend IRQ */
1708 cpts_set_irqpoll(cpsw->cpts, false);
1709
1710 skip_cpts:
1711 cpsw_notice(priv, probe,
1712 "initialized device (regs %pa, irq %d, pool size %d)\n",
1713 &ss_res->start, cpsw->irqs_table[0], descs_pool_size);
1714
1715 pm_runtime_put(&pdev->dev);
1716
1717 return 0;
1718
1719 clean_unregister_netdev_ret:
1720 unregister_netdev(ndev);
1721 clean_cpts:
1722 cpts_release(cpsw->cpts);
1723 cpdma_ctlr_destroy(cpsw->dma);
1724 clean_dt_ret:
1725 cpsw_remove_dt(pdev);
1726 pm_runtime_put_sync(&pdev->dev);
1727 clean_runtime_disable_ret:
1728 pm_runtime_disable(&pdev->dev);
1729 return ret;
1730 }
1731
cpsw_remove(struct platform_device * pdev)1732 static void cpsw_remove(struct platform_device *pdev)
1733 {
1734 struct cpsw_common *cpsw = platform_get_drvdata(pdev);
1735 int i, ret;
1736
1737 ret = pm_runtime_resume_and_get(&pdev->dev);
1738 if (ret < 0) {
1739 /* Note, if this error path is taken, we're leaking some
1740 * resources.
1741 */
1742 dev_err(&pdev->dev, "Failed to resume device (%pe)\n",
1743 ERR_PTR(ret));
1744 return;
1745 }
1746
1747 for (i = 0; i < cpsw->data.slaves; i++)
1748 if (cpsw->slaves[i].ndev)
1749 unregister_netdev(cpsw->slaves[i].ndev);
1750
1751 cpts_release(cpsw->cpts);
1752 cpdma_ctlr_destroy(cpsw->dma);
1753 cpsw_remove_dt(pdev);
1754 pm_runtime_put_sync(&pdev->dev);
1755 pm_runtime_disable(&pdev->dev);
1756 }
1757
1758 #ifdef CONFIG_PM_SLEEP
cpsw_suspend(struct device * dev)1759 static int cpsw_suspend(struct device *dev)
1760 {
1761 struct cpsw_common *cpsw = dev_get_drvdata(dev);
1762 int i;
1763
1764 rtnl_lock();
1765
1766 for (i = 0; i < cpsw->data.slaves; i++)
1767 if (cpsw->slaves[i].ndev)
1768 if (netif_running(cpsw->slaves[i].ndev))
1769 cpsw_ndo_stop(cpsw->slaves[i].ndev);
1770
1771 rtnl_unlock();
1772
1773 /* Select sleep pin state */
1774 pinctrl_pm_select_sleep_state(dev);
1775
1776 return 0;
1777 }
1778
cpsw_resume(struct device * dev)1779 static int cpsw_resume(struct device *dev)
1780 {
1781 struct cpsw_common *cpsw = dev_get_drvdata(dev);
1782 int i;
1783
1784 /* Select default pin state */
1785 pinctrl_pm_select_default_state(dev);
1786
1787 /* shut up ASSERT_RTNL() warning in netif_set_real_num_tx/rx_queues */
1788 rtnl_lock();
1789
1790 for (i = 0; i < cpsw->data.slaves; i++)
1791 if (cpsw->slaves[i].ndev)
1792 if (netif_running(cpsw->slaves[i].ndev))
1793 cpsw_ndo_open(cpsw->slaves[i].ndev);
1794
1795 rtnl_unlock();
1796
1797 return 0;
1798 }
1799 #endif
1800
1801 static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);
1802
1803 static struct platform_driver cpsw_driver = {
1804 .driver = {
1805 .name = "cpsw",
1806 .pm = &cpsw_pm_ops,
1807 .of_match_table = cpsw_of_mtable,
1808 },
1809 .probe = cpsw_probe,
1810 .remove = cpsw_remove,
1811 };
1812
1813 module_platform_driver(cpsw_driver);
1814
1815 MODULE_LICENSE("GPL");
1816 MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>");
1817 MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>");
1818 MODULE_DESCRIPTION("TI CPSW Ethernet driver");
1819