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
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
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
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, port: 0, control: ALE_BYPASS, value: 1);
119
120	dev_dbg(&ndev->dev, "promiscuity enabled\n");
121	} else {
122	/* Disable Bypass */
123	cpsw_ale_control_set(ale, port: 0, control: ALE_BYPASS, value: 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, port: i,
133	control: ALE_PORT_NOLEARN, value: 1);
134	cpsw_ale_control_set(ale, port: i,
135	control: ALE_PORT_NO_SA_UPDATE, value: 1);
136	}
137
138	/* Clear All Untouched entries */
139	cpsw_ale_control_set(ale, port: 0, control: ALE_AGEOUT, value: 1);
140	do {
141	cpu_relax();
142	if (cpsw_ale_control_get(ale, port: 0, control: ALE_AGEOUT))
143	break;
144	} while (time_after(timeout, jiffies));
145	cpsw_ale_control_set(ale, port: 0, control: ALE_AGEOUT, value: 1);
146
147	/* Clear all mcast from ALE */
148	cpsw_ale_flush_multicast(ale, ALE_ALL_PORTS, vid: -1);
149	__hw_addr_ref_unsync_dev(list: &ndev->mc, dev: ndev, NULL);
150
151	/* Flood All Unicast Packets to Host port */
152	cpsw_ale_control_set(ale, port: 0, control: ALE_P0_UNI_FLOOD, value: 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, port: 0, control: ALE_P0_UNI_FLOOD, value: 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, port: i,
161	control: ALE_PORT_NOLEARN, value: 0);
162	cpsw_ale_control_set(ale, port: i,
163	control: ALE_PORT_NO_SA_UPDATE, value: 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	*/
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(dev: 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(ale: cpsw->ale, addr, port_mask: mask, flags, vid, mcast_state: 0);
197	else
198	ret = cpsw_ale_del_mcast(ale: cpsw->ale, addr, port_mask: 0, flags, vid);
199
200	return ret;
201	}
202
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(addr1: ha->addr, addr2: 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(ndev: sync_ctx->ndev, addr: sync_ctx->addr, vid, add: 0);
226	return 0;
227	}
228
229	if (found)
230	ret = cpsw_set_mc(ndev: sync_ctx->ndev, addr: sync_ctx->addr, vid, add: 1);
231
232	return ret;
233	}
234
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(dev: ndev, action: cpsw_update_vlan_mc, arg: &sync_ctx);
246	if (sync_ctx.consumed < num && !ret)
247	ret = cpsw_set_mc(ndev, addr, vid: -1, add: 1);
248
249	return ret;
250	}
251
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(dev: ndev, action: cpsw_update_vlan_mc, arg: &sync_ctx);
262	if (sync_ctx.consumed == num)
263	cpsw_set_mc(ndev, addr, vid: -1, add: 0);
264
265	return 0;
266	}
267
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(addr1: ha->addr, addr2: 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(ndev: sync_ctx->ndev, addr: sync_ctx->addr, vid, add: 0);
290	return 0;
291	}
292
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(dev: ndev, action: cpsw_purge_vlan_mc, arg: &sync_ctx);
302	if (sync_ctx.consumed < num)
303	cpsw_set_mc(ndev, addr, vid: -1, add: 0);
304
305	return 0;
306	}
307
308	static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
309	{
310	struct cpsw_priv *priv = netdev_priv(dev: 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, enable: true);
320	cpsw_ale_set_allmulti(ale: cpsw->ale, IFF_ALLMULTI, port: slave_port);
321	return;
322	} else {
323	/* Disable promiscuous mode */
324	cpsw_set_promiscious(ndev, enable: false);
325	}
326
327	/* Restore allmulti on vlans if necessary */
328	cpsw_ale_set_allmulti(ale: cpsw->ale,
329	allmulti: ndev->flags & IFF_ALLMULTI, port: slave_port);
330
331	/* add/remove mcast address either for real netdev or for vlan */
332	__hw_addr_ref_sync_dev(list: &ndev->mc, dev: ndev, sync: cpsw_add_mc_addr,
333	unsync: cpsw_del_mc_addr);
334	}
335
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
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	struct cpsw_priv *priv;
355	struct page_pool *pool;
356	struct sk_buff *skb;
357	struct xdp_buff xdp;
358	dma_addr_t dma;
359
360	if (cpsw->data.dual_emac && status >= 0) {
361	port = CPDMA_RX_SOURCE_PORT(status);
362	if (port)
363	ndev = cpsw->slaves[--port].ndev;
364	}
365
366	priv = netdev_priv(dev: ndev);
367	pool = cpsw->page_pool[ch];
368	if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
369	/* In dual emac mode check for all interfaces */
370	if (cpsw->data.dual_emac && cpsw->usage_count &&
371	(status >= 0)) {
372	/* The packet received is for the interface which
373	* is already down and the other interface is up
374	* and running, instead of freeing which results
375	* in reducing of the number of rx descriptor in
376	* DMA engine, requeue page back to cpdma.
377	*/
378	new_page = page;
379	goto requeue;
380	}
381
382	/* the interface is going down, pages are purged */
383	page_pool_recycle_direct(pool, page);
384	return;
385	}
386
387	new_page = page_pool_dev_alloc_pages(pool);
388	if (unlikely(!new_page)) {
389	new_page = page;
390	ndev->stats.rx_dropped++;
391	goto requeue;
392	}
393
394	if (priv->xdp_prog) {
395	int size = len;
396
397	xdp_init_buff(xdp: &xdp, PAGE_SIZE, rxq: &priv->xdp_rxq[ch]);
398	if (status & CPDMA_RX_VLAN_ENCAP) {
399	headroom += CPSW_RX_VLAN_ENCAP_HDR_SIZE;
400	size -= CPSW_RX_VLAN_ENCAP_HDR_SIZE;
401	}
402
403	xdp_prepare_buff(xdp: &xdp, hard_start: pa, headroom, data_len: size, meta_valid: false);
404
405	port = priv->emac_port + cpsw->data.dual_emac;
406	ret = cpsw_run_xdp(priv, ch, xdp: &xdp, page, port, len: &len);
407	if (ret != CPSW_XDP_PASS)
408	goto requeue;
409
410	headroom = xdp.data - xdp.data_hard_start;
411
412	/* XDP prog can modify vlan tag, so can't use encap header */
413	status &= ~CPDMA_RX_VLAN_ENCAP;
414	}
415
416	/* pass skb to netstack if no XDP prog or returned XDP_PASS */
417	skb = build_skb(data: pa, frag_size: cpsw_rxbuf_total_len(len: pkt_size));
418	if (!skb) {
419	ndev->stats.rx_dropped++;
420	page_pool_recycle_direct(pool, page);
421	goto requeue;
422	}
423
424	skb_reserve(skb, len: headroom);
425	skb_put(skb, len);
426	skb->dev = ndev;
427	if (status & CPDMA_RX_VLAN_ENCAP)
428	cpsw_rx_vlan_encap(skb);
429	if (priv->rx_ts_enabled)
430	cpts_rx_timestamp(cpts: cpsw->cpts, skb);
431	skb->protocol = eth_type_trans(skb, dev: ndev);
432
433	/* mark skb for recycling */
434	skb_mark_for_recycle(skb);
435	netif_receive_skb(skb);
436
437	ndev->stats.rx_bytes += len;
438	ndev->stats.rx_packets++;
439
440	requeue:
441	xmeta = page_address(new_page) + CPSW_XMETA_OFFSET;
442	xmeta->ndev = ndev;
443	xmeta->ch = ch;
444
445	dma = page_pool_get_dma_addr(page: new_page) + CPSW_HEADROOM_NA;
446	ret = cpdma_chan_submit_mapped(chan: cpsw->rxv[ch].ch, token: new_page, data: dma,
447	len: pkt_size, directed: 0);
448	if (ret < 0) {
449	WARN_ON(ret == -ENOMEM);
450	page_pool_recycle_direct(pool, page: new_page);
451	}
452	}
453
454	static void _cpsw_adjust_link(struct cpsw_slave *slave,
455	struct cpsw_priv *priv, bool *link)
456	{
457	struct phy_device *phy = slave->phy;
458	u32 mac_control = 0;
459	u32 slave_port;
460	struct cpsw_common *cpsw = priv->cpsw;
461
462	if (!phy)
463	return;
464
465	slave_port = cpsw_get_slave_port(slave_num: slave->slave_num);
466
467	if (phy->link) {
468	mac_control = CPSW_SL_CTL_GMII_EN;
469
470	if (phy->speed == 1000)
471	mac_control |= CPSW_SL_CTL_GIG;
472	if (phy->duplex)
473	mac_control |= CPSW_SL_CTL_FULLDUPLEX;
474
475	/* set speed_in input in case RMII mode is used in 100Mbps */
476	if (phy->speed == 100)
477	mac_control |= CPSW_SL_CTL_IFCTL_A;
478	/* in band mode only works in 10Mbps RGMII mode */
479	else if ((phy->speed == 10) && phy_interface_is_rgmii(phydev: phy))
480	mac_control |= CPSW_SL_CTL_EXT_EN; /* In Band mode */
481
482	if (priv->rx_pause)
483	mac_control |= CPSW_SL_CTL_RX_FLOW_EN;
484
485	if (priv->tx_pause)
486	mac_control |= CPSW_SL_CTL_TX_FLOW_EN;
487
488	if (mac_control != slave->mac_control)
489	cpsw_sl_ctl_set(sl: slave->mac_sl, ctl_funcs: mac_control);
490
491	/* enable forwarding */
492	cpsw_ale_control_set(ale: cpsw->ale, port: slave_port,
493	control: ALE_PORT_STATE, value: ALE_PORT_STATE_FORWARD);
494
495	*link = true;
496
497	if (priv->shp_cfg_speed &&
498	priv->shp_cfg_speed != slave->phy->speed &&
499	!cpsw_shp_is_off(priv))
500	dev_warn(priv->dev,
501	"Speed was changed, CBS shaper speeds are changed!");
502	} else {
503	mac_control = 0;
504	/* disable forwarding */
505	cpsw_ale_control_set(ale: cpsw->ale, port: slave_port,
506	control: ALE_PORT_STATE, value: ALE_PORT_STATE_DISABLE);
507
508	cpsw_sl_wait_for_idle(sl: slave->mac_sl, tmo: 100);
509
510	cpsw_sl_ctl_reset(sl: slave->mac_sl);
511	}
512
513	if (mac_control != slave->mac_control)
514	phy_print_status(phydev: phy);
515
516	slave->mac_control = mac_control;
517	}
518
519	static void cpsw_adjust_link(struct net_device *ndev)
520	{
521	struct cpsw_priv *priv = netdev_priv(dev: ndev);
522	struct cpsw_common *cpsw = priv->cpsw;
523	bool link = false;
524
525	for_each_slave(priv, _cpsw_adjust_link, priv, &link);
526
527	if (link) {
528	if (cpsw_need_resplit(cpsw))
529	cpsw_split_res(cpsw);
530
531	netif_carrier_on(dev: ndev);
532	if (netif_running(dev: ndev))
533	netif_tx_wake_all_queues(dev: ndev);
534	} else {
535	netif_carrier_off(dev: ndev);
536	netif_tx_stop_all_queues(dev: ndev);
537	}
538	}
539
540	static inline void cpsw_add_dual_emac_def_ale_entries(
541	struct cpsw_priv *priv, struct cpsw_slave *slave,
542	u32 slave_port)
543	{
544	struct cpsw_common *cpsw = priv->cpsw;
545	u32 port_mask = 1 << slave_port | ALE_PORT_HOST;
546
547	if (cpsw->version == CPSW_VERSION_1)
548	slave_write(slave, val: slave->port_vlan, CPSW1_PORT_VLAN);
549	else
550	slave_write(slave, val: slave->port_vlan, CPSW2_PORT_VLAN);
551	cpsw_ale_add_vlan(ale: cpsw->ale, vid: slave->port_vlan, port: port_mask,
552	untag: port_mask, reg_mcast: port_mask, unreg_mcast: 0);
553	cpsw_ale_add_mcast(ale: cpsw->ale, addr: priv->ndev->broadcast,
554	ALE_PORT_HOST, ALE_VLAN, vid: slave->port_vlan, mcast_state: 0);
555	cpsw_ale_add_ucast(ale: cpsw->ale, addr: priv->mac_addr,
556	HOST_PORT_NUM, ALE_VLAN |
557	ALE_SECURE, vid: slave->port_vlan);
558	cpsw_ale_control_set(ale: cpsw->ale, port: slave_port,
559	control: ALE_PORT_DROP_UNKNOWN_VLAN, value: 1);
560	}
561
562	static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
563	{
564	u32 slave_port;
565	struct phy_device *phy;
566	struct cpsw_common *cpsw = priv->cpsw;
567
568	cpsw_sl_reset(sl: slave->mac_sl, tmo: 100);
569	cpsw_sl_ctl_reset(sl: slave->mac_sl);
570
571	/* setup priority mapping */
572	cpsw_sl_reg_write(sl: slave->mac_sl, reg: CPSW_SL_RX_PRI_MAP,
573	RX_PRIORITY_MAPPING);
574
575	switch (cpsw->version) {
576	case CPSW_VERSION_1:
577	slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
578	/* Increase RX FIFO size to 5 for supporting fullduplex
579	* flow control mode
580	*/
581	slave_write(slave,
582	val: (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
583	CPSW_MAX_BLKS_RX, CPSW1_MAX_BLKS);
584	break;
585	case CPSW_VERSION_2:
586	case CPSW_VERSION_3:
587	case CPSW_VERSION_4:
588	slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
589	/* Increase RX FIFO size to 5 for supporting fullduplex
590	* flow control mode
591	*/
592	slave_write(slave,
593	val: (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
594	CPSW_MAX_BLKS_RX, CPSW2_MAX_BLKS);
595	break;
596	}
597
598	/* setup max packet size, and mac address */
599	cpsw_sl_reg_write(sl: slave->mac_sl, reg: CPSW_SL_RX_MAXLEN,
600	val: cpsw->rx_packet_max);
601	cpsw_set_slave_mac(slave, priv);
602
603	slave->mac_control = 0; /* no link yet */
604
605	slave_port = cpsw_get_slave_port(slave_num: slave->slave_num);
606
607	if (cpsw->data.dual_emac)
608	cpsw_add_dual_emac_def_ale_entries(priv, slave, slave_port);
609	else
610	cpsw_ale_add_mcast(ale: cpsw->ale, addr: priv->ndev->broadcast,
611	port_mask: 1 << slave_port, flags: 0, vid: 0, ALE_MCAST_FWD_2);
612
613	if (slave->data->phy_node) {
614	phy = of_phy_connect(dev: priv->ndev, phy_np: slave->data->phy_node,
615	hndlr: &cpsw_adjust_link, flags: 0, iface: slave->data->phy_if);
616	if (!phy) {
617	dev_err(priv->dev, "phy \"%pOF\" not found on slave %d\n",
618	slave->data->phy_node,
619	slave->slave_num);
620	return;
621	}
622	} else {
623	phy = phy_connect(dev: priv->ndev, bus_id: slave->data->phy_id,
624	handler: &cpsw_adjust_link, interface: slave->data->phy_if);
625	if (IS_ERR(ptr: phy)) {
626	dev_err(priv->dev,
627	"phy \"%s\" not found on slave %d, err %ld\n",
628	slave->data->phy_id, slave->slave_num,
629	PTR_ERR(phy));
630	return;
631	}
632	}
633
634	slave->phy = phy;
635
636	phy_attached_info(phydev: slave->phy);
637
638	phy_start(phydev: slave->phy);
639
640	/* Configure GMII_SEL register */
641	if (!IS_ERR(ptr: slave->data->ifphy))
642	phy_set_mode_ext(phy: slave->data->ifphy, mode: PHY_MODE_ETHERNET,
643	submode: slave->data->phy_if);
644	else
645	cpsw_phy_sel(dev: cpsw->dev, phy_mode: slave->phy->interface,
646	slave: slave->slave_num);
647	}
648
649	static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)
650	{
651	struct cpsw_common *cpsw = priv->cpsw;
652	const int vlan = cpsw->data.default_vlan;
653	u32 reg;
654	int i;
655	int unreg_mcast_mask;
656
657	reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
658	CPSW2_PORT_VLAN;
659
660	writel(val: vlan, addr: &cpsw->host_port_regs->port_vlan);
661
662	for (i = 0; i < cpsw->data.slaves; i++)
663	slave_write(slave: cpsw->slaves + i, val: vlan, offset: reg);
664
665	if (priv->ndev->flags & IFF_ALLMULTI)
666	unreg_mcast_mask = ALE_ALL_PORTS;
667	else
668	unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
669
670	cpsw_ale_add_vlan(ale: cpsw->ale, vid: vlan, ALE_ALL_PORTS,
671	ALE_ALL_PORTS, ALE_ALL_PORTS,
672	unreg_mcast: unreg_mcast_mask);
673	}
674
675	static void cpsw_init_host_port(struct cpsw_priv *priv)
676	{
677	u32 fifo_mode;
678	u32 control_reg;
679	struct cpsw_common *cpsw = priv->cpsw;
680
681	/* soft reset the controller and initialize ale */
682	soft_reset(module: "cpsw", reg: &cpsw->regs->soft_reset);
683	cpsw_ale_start(ale: cpsw->ale);
684
685	/* switch to vlan unaware mode */
686	cpsw_ale_control_set(ale: cpsw->ale, HOST_PORT_NUM, control: ALE_VLAN_AWARE,
687	CPSW_ALE_VLAN_AWARE);
688	control_reg = readl(addr: &cpsw->regs->control);
689	control_reg |= CPSW_VLAN_AWARE | CPSW_RX_VLAN_ENCAP;
690	writel(val: control_reg, addr: &cpsw->regs->control);
691	fifo_mode = (cpsw->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :
692	CPSW_FIFO_NORMAL_MODE;
693	writel(val: fifo_mode, addr: &cpsw->host_port_regs->tx_in_ctl);
694
695	/* setup host port priority mapping */
696	writel_relaxed(CPDMA_TX_PRIORITY_MAP,
697	&cpsw->host_port_regs->cpdma_tx_pri_map);
698	writel_relaxed(0, &cpsw->host_port_regs->cpdma_rx_chan_map);
699
700	cpsw_ale_control_set(ale: cpsw->ale, HOST_PORT_NUM,
701	control: ALE_PORT_STATE, value: ALE_PORT_STATE_FORWARD);
702
703	if (!cpsw->data.dual_emac) {
704	cpsw_ale_add_ucast(ale: cpsw->ale, addr: priv->mac_addr, HOST_PORT_NUM,
705	flags: 0, vid: 0);
706	cpsw_ale_add_mcast(ale: cpsw->ale, addr: priv->ndev->broadcast,
707	ALE_PORT_HOST, flags: 0, vid: 0, ALE_MCAST_FWD_2);
708	}
709	}
710
711	static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_common *cpsw)
712	{
713	u32 slave_port;
714
715	slave_port = cpsw_get_slave_port(slave_num: slave->slave_num);
716
717	if (!slave->phy)
718	return;
719	phy_stop(phydev: slave->phy);
720	phy_disconnect(phydev: slave->phy);
721	slave->phy = NULL;
722	cpsw_ale_control_set(ale: cpsw->ale, port: slave_port,
723	control: ALE_PORT_STATE, value: ALE_PORT_STATE_DISABLE);
724	cpsw_sl_reset(sl: slave->mac_sl, tmo: 100);
725	cpsw_sl_ctl_reset(sl: slave->mac_sl);
726	}
727
728	static int cpsw_restore_vlans(struct net_device *vdev, int vid, void *arg)
729	{
730	struct cpsw_priv *priv = arg;
731
732	if (!vdev)
733	return 0;
734
735	cpsw_ndo_vlan_rx_add_vid(ndev: priv->ndev, proto: 0, vid);
736	return 0;
737	}
738
739	/* restore resources after port reset */
740	static void cpsw_restore(struct cpsw_priv *priv)
741	{
742	/* restore vlan configurations */
743	vlan_for_each(dev: priv->ndev, action: cpsw_restore_vlans, arg: priv);
744
745	/* restore MQPRIO offload */
746	for_each_slave(priv, cpsw_mqprio_resume, priv);
747
748	/* restore CBS offload */
749	for_each_slave(priv, cpsw_cbs_resume, priv);
750	}
751
752	static int cpsw_ndo_open(struct net_device *ndev)
753	{
754	struct cpsw_priv *priv = netdev_priv(dev: ndev);
755	struct cpsw_common *cpsw = priv->cpsw;
756	int ret;
757	u32 reg;
758
759	ret = pm_runtime_resume_and_get(dev: cpsw->dev);
760	if (ret < 0)
761	return ret;
762
763	netif_carrier_off(dev: ndev);
764
765	/* Notify the stack of the actual queue counts. */
766	ret = netif_set_real_num_tx_queues(dev: ndev, txq: cpsw->tx_ch_num);
767	if (ret) {
768	dev_err(priv->dev, "cannot set real number of tx queues\n");
769	goto err_cleanup;
770	}
771
772	ret = netif_set_real_num_rx_queues(dev: ndev, rxq: cpsw->rx_ch_num);
773	if (ret) {
774	dev_err(priv->dev, "cannot set real number of rx queues\n");
775	goto err_cleanup;
776	}
777
778	reg = cpsw->version;
779
780	dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
781	CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
782	CPSW_RTL_VERSION(reg));
783
784	/* Initialize host and slave ports */
785	if (!cpsw->usage_count)
786	cpsw_init_host_port(priv);
787	for_each_slave(priv, cpsw_slave_open, priv);
788
789	/* Add default VLAN */
790	if (!cpsw->data.dual_emac)
791	cpsw_add_default_vlan(priv);
792	else
793	cpsw_ale_add_vlan(ale: cpsw->ale, vid: cpsw->data.default_vlan,
794	ALE_ALL_PORTS, ALE_ALL_PORTS, reg_mcast: 0, unreg_mcast: 0);
795
796	/* initialize shared resources for every ndev */
797	if (!cpsw->usage_count) {
798	/* disable priority elevation */
799	writel_relaxed(0, &cpsw->regs->ptype);
800
801	/* enable statistics collection only on all ports */
802	writel_relaxed(0x7, &cpsw->regs->stat_port_en);
803
804	/* Enable internal fifo flow control */
805	writel(val: 0x7, addr: &cpsw->regs->flow_control);
806
807	napi_enable(n: &cpsw->napi_rx);
808	napi_enable(n: &cpsw->napi_tx);
809
810	if (cpsw->tx_irq_disabled) {
811	cpsw->tx_irq_disabled = false;
812	enable_irq(irq: cpsw->irqs_table[1]);
813	}
814
815	if (cpsw->rx_irq_disabled) {
816	cpsw->rx_irq_disabled = false;
817	enable_irq(irq: cpsw->irqs_table[0]);
818	}
819
820	/* create rxqs for both infs in dual mac as they use same pool
821	* and must be destroyed together when no users.
822	*/
823	ret = cpsw_create_xdp_rxqs(cpsw);
824	if (ret < 0)
825	goto err_cleanup;
826
827	ret = cpsw_fill_rx_channels(priv);
828	if (ret < 0)
829	goto err_cleanup;
830
831	if (cpsw->cpts) {
832	if (cpts_register(cpts: cpsw->cpts))
833	dev_err(priv->dev, "error registering cpts device\n");
834	else
835	writel(val: 0x10, addr: &cpsw->wr_regs->misc_en);
836	}
837	}
838
839	cpsw_restore(priv);
840
841	/* Enable Interrupt pacing if configured */
842	if (cpsw->coal_intvl != 0) {
843	struct ethtool_coalesce coal;
844
845	coal.rx_coalesce_usecs = cpsw->coal_intvl;
846	cpsw_set_coalesce(ndev, coal: &coal, NULL, NULL);
847	}
848
849	cpdma_ctlr_start(ctlr: cpsw->dma);
850	cpsw_intr_enable(cpsw);
851	cpsw->usage_count++;
852
853	return 0;
854
855	err_cleanup:
856	if (!cpsw->usage_count) {
857	napi_disable(n: &cpsw->napi_rx);
858	napi_disable(n: &cpsw->napi_tx);
859	cpdma_ctlr_stop(ctlr: cpsw->dma);
860	cpsw_destroy_xdp_rxqs(cpsw);
861	}
862
863	for_each_slave(priv, cpsw_slave_stop, cpsw);
864	pm_runtime_put_sync(dev: cpsw->dev);
865	netif_carrier_off(dev: priv->ndev);
866	return ret;
867	}
868
869	static int cpsw_ndo_stop(struct net_device *ndev)
870	{
871	struct cpsw_priv *priv = netdev_priv(dev: ndev);
872	struct cpsw_common *cpsw = priv->cpsw;
873
874	cpsw_info(priv, ifdown, "shutting down cpsw device\n");
875	__hw_addr_ref_unsync_dev(list: &ndev->mc, dev: ndev, unsync: cpsw_purge_all_mc);
876	netif_tx_stop_all_queues(dev: priv->ndev);
877	netif_carrier_off(dev: priv->ndev);
878
879	if (cpsw->usage_count <= 1) {
880	napi_disable(n: &cpsw->napi_rx);
881	napi_disable(n: &cpsw->napi_tx);
882	cpts_unregister(cpts: cpsw->cpts);
883	cpsw_intr_disable(cpsw);
884	cpdma_ctlr_stop(ctlr: cpsw->dma);
885	cpsw_ale_stop(ale: cpsw->ale);
886	cpsw_destroy_xdp_rxqs(cpsw);
887	}
888	for_each_slave(priv, cpsw_slave_stop, cpsw);
889
890	if (cpsw_need_resplit(cpsw))
891	cpsw_split_res(cpsw);
892
893	cpsw->usage_count--;
894	pm_runtime_put_sync(dev: cpsw->dev);
895	return 0;
896	}
897
898	static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
899	struct net_device *ndev)
900	{
901	struct cpsw_priv *priv = netdev_priv(dev: ndev);
902	struct cpsw_common *cpsw = priv->cpsw;
903	struct cpts *cpts = cpsw->cpts;
904	struct netdev_queue *txq;
905	struct cpdma_chan *txch;
906	int ret, q_idx;
907
908	if (skb_put_padto(skb, CPSW_MIN_PACKET_SIZE)) {
909	cpsw_err(priv, tx_err, "packet pad failed\n");
910	ndev->stats.tx_dropped++;
911	return NET_XMIT_DROP;
912	}
913
914	if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
915	priv->tx_ts_enabled && cpts_can_timestamp(cpts, skb))
916	skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
917
918	q_idx = skb_get_queue_mapping(skb);
919	if (q_idx >= cpsw->tx_ch_num)
920	q_idx = q_idx % cpsw->tx_ch_num;
921
922	txch = cpsw->txv[q_idx].ch;
923	txq = netdev_get_tx_queue(dev: ndev, index: q_idx);
924	skb_tx_timestamp(skb);
925	ret = cpdma_chan_submit(chan: txch, token: skb, data: skb->data, len: skb->len,
926	directed: priv->emac_port + cpsw->data.dual_emac);
927	if (unlikely(ret != 0)) {
928	cpsw_err(priv, tx_err, "desc submit failed\n");
929	goto fail;
930	}
931
932	/* If there is no more tx desc left free then we need to
933	* tell the kernel to stop sending us tx frames.
934	*/
935	if (unlikely(!cpdma_check_free_tx_desc(txch))) {
936	netif_tx_stop_queue(dev_queue: txq);
937
938	/* Barrier, so that stop_queue visible to other cpus */
939	smp_mb__after_atomic();
940
941	if (cpdma_check_free_tx_desc(chan: txch))
942	netif_tx_wake_queue(dev_queue: txq);
943	}
944
945	return NETDEV_TX_OK;
946	fail:
947	ndev->stats.tx_dropped++;
948	netif_tx_stop_queue(dev_queue: txq);
949
950	/* Barrier, so that stop_queue visible to other cpus */
951	smp_mb__after_atomic();
952
953	if (cpdma_check_free_tx_desc(chan: txch))
954	netif_tx_wake_queue(dev_queue: txq);
955
956	return NETDEV_TX_BUSY;
957	}
958
959	static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
960	{
961	struct cpsw_priv *priv = netdev_priv(dev: ndev);
962	struct sockaddr *addr = (struct sockaddr *)p;
963	struct cpsw_common *cpsw = priv->cpsw;
964	int flags = 0;
965	u16 vid = 0;
966	int ret;
967
968	if (!is_valid_ether_addr(addr: addr->sa_data))
969	return -EADDRNOTAVAIL;
970
971	ret = pm_runtime_resume_and_get(dev: cpsw->dev);
972	if (ret < 0)
973	return ret;
974
975	if (cpsw->data.dual_emac) {
976	vid = cpsw->slaves[priv->emac_port].port_vlan;
977	flags = ALE_VLAN;
978	}
979
980	cpsw_ale_del_ucast(ale: cpsw->ale, addr: priv->mac_addr, HOST_PORT_NUM,
981	flags, vid);
982	cpsw_ale_add_ucast(ale: cpsw->ale, addr: addr->sa_data, HOST_PORT_NUM,
983	flags, vid);
984
985	memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
986	eth_hw_addr_set(dev: ndev, addr: priv->mac_addr);
987	for_each_slave(priv, cpsw_set_slave_mac, priv);
988
989	pm_runtime_put(dev: cpsw->dev);
990
991	return 0;
992	}
993
994	static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
995	unsigned short vid)
996	{
997	int ret;
998	int unreg_mcast_mask = 0;
999	int mcast_mask;
1000	u32 port_mask;
1001	struct cpsw_common *cpsw = priv->cpsw;
1002
1003	if (cpsw->data.dual_emac) {
1004	port_mask = (1 << (priv->emac_port + 1)) | ALE_PORT_HOST;
1005
1006	mcast_mask = ALE_PORT_HOST;
1007	if (priv->ndev->flags & IFF_ALLMULTI)
1008	unreg_mcast_mask = mcast_mask;
1009	} else {
1010	port_mask = ALE_ALL_PORTS;
1011	mcast_mask = port_mask;
1012
1013	if (priv->ndev->flags & IFF_ALLMULTI)
1014	unreg_mcast_mask = ALE_ALL_PORTS;
1015	else
1016	unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
1017	}
1018
1019	ret = cpsw_ale_add_vlan(ale: cpsw->ale, vid, port: port_mask, untag: 0, reg_mcast: port_mask,
1020	unreg_mcast: unreg_mcast_mask);
1021	if (ret != 0)
1022	return ret;
1023
1024	ret = cpsw_ale_add_ucast(ale: cpsw->ale, addr: priv->mac_addr,
1025	HOST_PORT_NUM, ALE_VLAN, vid);
1026	if (ret != 0)
1027	goto clean_vid;
1028
1029	ret = cpsw_ale_add_mcast(ale: cpsw->ale, addr: priv->ndev->broadcast,
1030	port_mask: mcast_mask, ALE_VLAN, vid, mcast_state: 0);
1031	if (ret != 0)
1032	goto clean_vlan_ucast;
1033	return 0;
1034
1035	clean_vlan_ucast:
1036	cpsw_ale_del_ucast(ale: cpsw->ale, addr: priv->mac_addr,
1037	HOST_PORT_NUM, ALE_VLAN, vid);
1038	clean_vid:
1039	cpsw_ale_del_vlan(ale: cpsw->ale, vid, port: 0);
1040	return ret;
1041	}
1042
1043	static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1044	__be16 proto, u16 vid)
1045	{
1046	struct cpsw_priv *priv = netdev_priv(dev: ndev);
1047	struct cpsw_common *cpsw = priv->cpsw;
1048	int ret;
1049
1050	if (vid == cpsw->data.default_vlan)
1051	return 0;
1052
1053	ret = pm_runtime_resume_and_get(dev: cpsw->dev);
1054	if (ret < 0)
1055	return ret;
1056
1057	if (cpsw->data.dual_emac) {
1058	/* In dual EMAC, reserved VLAN id should not be used for
1059	* creating VLAN interfaces as this can break the dual
1060	* EMAC port separation
1061	*/
1062	int i;
1063
1064	for (i = 0; i < cpsw->data.slaves; i++) {
1065	if (vid == cpsw->slaves[i].port_vlan) {
1066	ret = -EINVAL;
1067	goto err;
1068	}
1069	}
1070	}
1071
1072	dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1073	ret = cpsw_add_vlan_ale_entry(priv, vid);
1074	err:
1075	pm_runtime_put(dev: cpsw->dev);
1076	return ret;
1077	}
1078
1079	static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1080	__be16 proto, u16 vid)
1081	{
1082	struct cpsw_priv *priv = netdev_priv(dev: ndev);
1083	struct cpsw_common *cpsw = priv->cpsw;
1084	int ret;
1085
1086	if (vid == cpsw->data.default_vlan)
1087	return 0;
1088
1089	ret = pm_runtime_resume_and_get(dev: cpsw->dev);
1090	if (ret < 0)
1091	return ret;
1092
1093	if (cpsw->data.dual_emac) {
1094	int i;
1095
1096	for (i = 0; i < cpsw->data.slaves; i++) {
1097	if (vid == cpsw->slaves[i].port_vlan)
1098	goto err;
1099	}
1100	}
1101
1102	dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1103	ret = cpsw_ale_del_vlan(ale: cpsw->ale, vid, port: 0);
1104	ret |= cpsw_ale_del_ucast(ale: cpsw->ale, addr: priv->mac_addr,
1105	HOST_PORT_NUM, ALE_VLAN, vid);
1106	ret |= cpsw_ale_del_mcast(ale: cpsw->ale, addr: priv->ndev->broadcast,
1107	port_mask: 0, ALE_VLAN, vid);
1108	ret |= cpsw_ale_flush_multicast(ale: cpsw->ale, ALE_PORT_HOST, vid);
1109	err:
1110	pm_runtime_put(dev: cpsw->dev);
1111	return ret;
1112	}
1113
1114	static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n,
1115	struct xdp_frame **frames, u32 flags)
1116	{
1117	struct cpsw_priv *priv = netdev_priv(dev: ndev);
1118	struct cpsw_common *cpsw = priv->cpsw;
1119	struct xdp_frame *xdpf;
1120	int i, nxmit = 0, port;
1121
1122	if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
1123	return -EINVAL;
1124
1125	for (i = 0; i < n; i++) {
1126	xdpf = frames[i];
1127	if (xdpf->len < CPSW_MIN_PACKET_SIZE)
1128	break;
1129
1130	port = priv->emac_port + cpsw->data.dual_emac;
1131	if (cpsw_xdp_tx_frame(priv, xdpf, NULL, port))
1132	break;
1133	nxmit++;
1134	}
1135
1136	return nxmit;
1137	}
1138
1139	#ifdef CONFIG_NET_POLL_CONTROLLER
1140	static void cpsw_ndo_poll_controller(struct net_device *ndev)
1141	{
1142	struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1143
1144	cpsw_intr_disable(cpsw);
1145	cpsw_rx_interrupt(irq: cpsw->irqs_table[0], dev_id: cpsw);
1146	cpsw_tx_interrupt(irq: cpsw->irqs_table[1], dev_id: cpsw);
1147	cpsw_intr_enable(cpsw);
1148	}
1149	#endif
1150
1151	static const struct net_device_ops cpsw_netdev_ops = {
1152	.ndo_open = cpsw_ndo_open,
1153	.ndo_stop = cpsw_ndo_stop,
1154	.ndo_start_xmit = cpsw_ndo_start_xmit,
1155	.ndo_set_mac_address = cpsw_ndo_set_mac_address,
1156	.ndo_eth_ioctl = cpsw_ndo_ioctl,
1157	.ndo_validate_addr = eth_validate_addr,
1158	.ndo_tx_timeout = cpsw_ndo_tx_timeout,
1159	.ndo_set_rx_mode = cpsw_ndo_set_rx_mode,
1160	.ndo_set_tx_maxrate = cpsw_ndo_set_tx_maxrate,
1161	#ifdef CONFIG_NET_POLL_CONTROLLER
1162	.ndo_poll_controller = cpsw_ndo_poll_controller,
1163	#endif
1164	.ndo_vlan_rx_add_vid = cpsw_ndo_vlan_rx_add_vid,
1165	.ndo_vlan_rx_kill_vid = cpsw_ndo_vlan_rx_kill_vid,
1166	.ndo_setup_tc = cpsw_ndo_setup_tc,
1167	.ndo_bpf = cpsw_ndo_bpf,
1168	.ndo_xdp_xmit = cpsw_ndo_xdp_xmit,
1169	};
1170
1171	static void cpsw_get_drvinfo(struct net_device *ndev,
1172	struct ethtool_drvinfo *info)
1173	{
1174	struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1175	struct platform_device *pdev = to_platform_device(cpsw->dev);
1176
1177	strscpy(p: info->driver, q: "cpsw", size: sizeof(info->driver));
1178	strscpy(p: info->version, q: "1.0", size: sizeof(info->version));
1179	strscpy(p: info->bus_info, q: pdev->name, size: sizeof(info->bus_info));
1180	}
1181
1182	static int cpsw_set_pauseparam(struct net_device *ndev,
1183	struct ethtool_pauseparam *pause)
1184	{
1185	struct cpsw_priv *priv = netdev_priv(dev: ndev);
1186	bool link;
1187
1188	priv->rx_pause = pause->rx_pause ? true : false;
1189	priv->tx_pause = pause->tx_pause ? true : false;
1190
1191	for_each_slave(priv, _cpsw_adjust_link, priv, &link);
1192	return 0;
1193	}
1194
1195	static int cpsw_set_channels(struct net_device *ndev,
1196	struct ethtool_channels *chs)
1197	{
1198	return cpsw_set_channels_common(ndev, chs, rx_handler: cpsw_rx_handler);
1199	}
1200
1201	static const struct ethtool_ops cpsw_ethtool_ops = {
1202	.supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
1203	.get_drvinfo = cpsw_get_drvinfo,
1204	.get_msglevel = cpsw_get_msglevel,
1205	.set_msglevel = cpsw_set_msglevel,
1206	.get_link = ethtool_op_get_link,
1207	.get_ts_info = cpsw_get_ts_info,
1208	.get_coalesce = cpsw_get_coalesce,
1209	.set_coalesce = cpsw_set_coalesce,
1210	.get_sset_count = cpsw_get_sset_count,
1211	.get_strings = cpsw_get_strings,
1212	.get_ethtool_stats = cpsw_get_ethtool_stats,
1213	.get_pauseparam = cpsw_get_pauseparam,
1214	.set_pauseparam = cpsw_set_pauseparam,
1215	.get_wol = cpsw_get_wol,
1216	.set_wol = cpsw_set_wol,
1217	.get_regs_len = cpsw_get_regs_len,
1218	.get_regs = cpsw_get_regs,
1219	.begin = cpsw_ethtool_op_begin,
1220	.complete = cpsw_ethtool_op_complete,
1221	.get_channels = cpsw_get_channels,
1222	.set_channels = cpsw_set_channels,
1223	.get_link_ksettings = cpsw_get_link_ksettings,
1224	.set_link_ksettings = cpsw_set_link_ksettings,
1225	.get_eee = cpsw_get_eee,
1226	.set_eee = cpsw_set_eee,
1227	.nway_reset = cpsw_nway_reset,
1228	.get_ringparam = cpsw_get_ringparam,
1229	.set_ringparam = cpsw_set_ringparam,
1230	};
1231
1232	static int cpsw_probe_dt(struct cpsw_platform_data *data,
1233	struct platform_device *pdev)
1234	{
1235	struct device_node *node = pdev->dev.of_node;
1236	struct device_node *slave_node;
1237	int i = 0, ret;
1238	u32 prop;
1239
1240	if (!node)
1241	return -EINVAL;
1242
1243	if (of_property_read_u32(np: node, propname: "slaves", out_value: &prop)) {
1244	dev_err(&pdev->dev, "Missing slaves property in the DT.\n");
1245	return -EINVAL;
1246	}
1247	data->slaves = prop;
1248
1249	if (of_property_read_u32(np: node, propname: "active_slave", out_value: &prop)) {
1250	dev_err(&pdev->dev, "Missing active_slave property in the DT.\n");
1251	return -EINVAL;
1252	}
1253	data->active_slave = prop;
1254
1255	data->slave_data = devm_kcalloc(dev: &pdev->dev,
1256	n: data->slaves,
1257	size: sizeof(struct cpsw_slave_data),
1258	GFP_KERNEL);
1259	if (!data->slave_data)
1260	return -ENOMEM;
1261
1262	if (of_property_read_u32(np: node, propname: "cpdma_channels", out_value: &prop)) {
1263	dev_err(&pdev->dev, "Missing cpdma_channels property in the DT.\n");
1264	return -EINVAL;
1265	}
1266	data->channels = prop;
1267
1268	if (of_property_read_u32(np: node, propname: "bd_ram_size", out_value: &prop)) {
1269	dev_err(&pdev->dev, "Missing bd_ram_size property in the DT.\n");
1270	return -EINVAL;
1271	}
1272	data->bd_ram_size = prop;
1273
1274	if (of_property_read_u32(np: node, propname: "mac_control", out_value: &prop)) {
1275	dev_err(&pdev->dev, "Missing mac_control property in the DT.\n");
1276	return -EINVAL;
1277	}
1278	data->mac_control = prop;
1279
1280	if (of_property_read_bool(np: node, propname: "dual_emac"))
1281	data->dual_emac = true;
1282
1283	/*
1284	* Populate all the child nodes here...
1285	*/
1286	ret = of_platform_populate(root: node, NULL, NULL, parent: &pdev->dev);
1287	/* We do not want to force this, as in some cases may not have child */
1288	if (ret)
1289	dev_warn(&pdev->dev, "Doesn't have any child node\n");
1290
1291	for_each_available_child_of_node(node, slave_node) {
1292	struct cpsw_slave_data *slave_data = data->slave_data + i;
1293	int lenp;
1294	const __be32 *parp;
1295
1296	/* This is no slave child node, continue */
1297	if (!of_node_name_eq(np: slave_node, name: "slave"))
1298	continue;
1299
1300	slave_data->ifphy = devm_of_phy_get(dev: &pdev->dev, np: slave_node,
1301	NULL);
1302	if (!IS_ENABLED(CONFIG_TI_CPSW_PHY_SEL) &&
1303	IS_ERR(ptr: slave_data->ifphy)) {
1304	ret = PTR_ERR(ptr: slave_data->ifphy);
1305	dev_err(&pdev->dev,
1306	"%d: Error retrieving port phy: %d\n", i, ret);
1307	goto err_node_put;
1308	}
1309
1310	slave_data->slave_node = slave_node;
1311	slave_data->phy_node = of_parse_phandle(np: slave_node,
1312	phandle_name: "phy-handle", index: 0);
1313	parp = of_get_property(node: slave_node, name: "phy_id", lenp: &lenp);
1314	if (slave_data->phy_node) {
1315	dev_dbg(&pdev->dev,
1316	"slave[%d] using phy-handle=\"%pOF\"\n",
1317	i, slave_data->phy_node);
1318	} else if (of_phy_is_fixed_link(np: slave_node)) {
1319	/* In the case of a fixed PHY, the DT node associated
1320	* to the PHY is the Ethernet MAC DT node.
1321	*/
1322	ret = of_phy_register_fixed_link(np: slave_node);
1323	if (ret) {
1324	dev_err_probe(dev: &pdev->dev, err: ret, fmt: "failed to register fixed-link phy\n");
1325	goto err_node_put;
1326	}
1327	slave_data->phy_node = of_node_get(node: slave_node);
1328	} else if (parp) {
1329	u32 phyid;
1330	struct device_node *mdio_node;
1331	struct platform_device *mdio;
1332
1333	if (lenp != (sizeof(__be32) * 2)) {
1334	dev_err(&pdev->dev, "Invalid slave[%d] phy_id property\n", i);
1335	goto no_phy_slave;
1336	}
1337	mdio_node = of_find_node_by_phandle(be32_to_cpup(p: parp));
1338	phyid = be32_to_cpup(p: parp+1);
1339	mdio = of_find_device_by_node(np: mdio_node);
1340	of_node_put(node: mdio_node);
1341	if (!mdio) {
1342	dev_err(&pdev->dev, "Missing mdio platform device\n");
1343	ret = -EINVAL;
1344	goto err_node_put;
1345	}
1346	snprintf(buf: slave_data->phy_id, size: sizeof(slave_data->phy_id),
1347	PHY_ID_FMT, mdio->name, phyid);
1348	put_device(dev: &mdio->dev);
1349	} else {
1350	dev_err(&pdev->dev,
1351	"No slave[%d] phy_id, phy-handle, or fixed-link property\n",
1352	i);
1353	goto no_phy_slave;
1354	}
1355	ret = of_get_phy_mode(np: slave_node, interface: &slave_data->phy_if);
1356	if (ret) {
1357	dev_err(&pdev->dev, "Missing or malformed slave[%d] phy-mode property\n",
1358	i);
1359	goto err_node_put;
1360	}
1361
1362	no_phy_slave:
1363	ret = of_get_mac_address(np: slave_node, mac: slave_data->mac_addr);
1364	if (ret) {
1365	ret = ti_cm_get_macid(dev: &pdev->dev, slave: i,
1366	mac_addr: slave_data->mac_addr);
1367	if (ret)
1368	goto err_node_put;
1369	}
1370	if (data->dual_emac) {
1371	if (of_property_read_u32(np: slave_node, propname: "dual_emac_res_vlan",
1372	out_value: &prop)) {
1373	dev_err(&pdev->dev, "Missing dual_emac_res_vlan in DT.\n");
1374	slave_data->dual_emac_res_vlan = i+1;
1375	dev_err(&pdev->dev, "Using %d as Reserved VLAN for %d slave\n",
1376	slave_data->dual_emac_res_vlan, i);
1377	} else {
1378	slave_data->dual_emac_res_vlan = prop;
1379	}
1380	}
1381
1382	i++;
1383	if (i == data->slaves) {
1384	ret = 0;
1385	goto err_node_put;
1386	}
1387	}
1388
1389	return 0;
1390
1391	err_node_put:
1392	of_node_put(node: slave_node);
1393	return ret;
1394	}
1395
1396	static void cpsw_remove_dt(struct platform_device *pdev)
1397	{
1398	struct cpsw_common *cpsw = platform_get_drvdata(pdev);
1399	struct cpsw_platform_data *data = &cpsw->data;
1400	struct device_node *node = pdev->dev.of_node;
1401	struct device_node *slave_node;
1402	int i = 0;
1403
1404	for_each_available_child_of_node(node, slave_node) {
1405	struct cpsw_slave_data *slave_data = &data->slave_data[i];
1406
1407	if (!of_node_name_eq(np: slave_node, name: "slave"))
1408	continue;
1409
1410	if (of_phy_is_fixed_link(np: slave_node))
1411	of_phy_deregister_fixed_link(np: slave_node);
1412
1413	of_node_put(node: slave_data->phy_node);
1414
1415	i++;
1416	if (i == data->slaves) {
1417	of_node_put(node: slave_node);
1418	break;
1419	}
1420	}
1421
1422	of_platform_depopulate(parent: &pdev->dev);
1423	}
1424
1425	static int cpsw_probe_dual_emac(struct cpsw_priv *priv)
1426	{
1427	struct cpsw_common *cpsw = priv->cpsw;
1428	struct cpsw_platform_data *data = &cpsw->data;
1429	struct net_device *ndev;
1430	struct cpsw_priv *priv_sl2;
1431	int ret = 0;
1432
1433	ndev = devm_alloc_etherdev_mqs(dev: cpsw->dev, sizeof_priv: sizeof(struct cpsw_priv),
1434	CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);
1435	if (!ndev) {
1436	dev_err(cpsw->dev, "cpsw: error allocating net_device\n");
1437	return -ENOMEM;
1438	}
1439
1440	priv_sl2 = netdev_priv(dev: ndev);
1441	priv_sl2->cpsw = cpsw;
1442	priv_sl2->ndev = ndev;
1443	priv_sl2->dev = &ndev->dev;
1444	priv_sl2->msg_enable = netif_msg_init(debug_value: debug_level, CPSW_DEBUG);
1445
1446	if (is_valid_ether_addr(addr: data->slave_data[1].mac_addr)) {
1447	memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,
1448	ETH_ALEN);
1449	dev_info(cpsw->dev, "cpsw: Detected MACID = %pM\n",
1450	priv_sl2->mac_addr);
1451	} else {
1452	eth_random_addr(addr: priv_sl2->mac_addr);
1453	dev_info(cpsw->dev, "cpsw: Random MACID = %pM\n",
1454	priv_sl2->mac_addr);
1455	}
1456	eth_hw_addr_set(dev: ndev, addr: priv_sl2->mac_addr);
1457
1458	priv_sl2->emac_port = 1;
1459	cpsw->slaves[1].ndev = ndev;
1460	ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
1461	ndev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
1462	NETDEV_XDP_ACT_NDO_XMIT;
1463
1464	ndev->netdev_ops = &cpsw_netdev_ops;
1465	ndev->ethtool_ops = &cpsw_ethtool_ops;
1466
1467	/* register the network device */
1468	SET_NETDEV_DEV(ndev, cpsw->dev);
1469	ndev->dev.of_node = cpsw->slaves[1].data->slave_node;
1470	ret = register_netdev(dev: ndev);
1471	if (ret)
1472	dev_err(cpsw->dev, "cpsw: error registering net device\n");
1473
1474	return ret;
1475	}
1476
1477	static const struct of_device_id cpsw_of_mtable[] = {
1478	{ .compatible = "ti,cpsw"},
1479	{ .compatible = "ti,am335x-cpsw"},
1480	{ .compatible = "ti,am4372-cpsw"},
1481	{ .compatible = "ti,dra7-cpsw"},
1482	{ /* sentinel */ },
1483	};
1484	MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
1485
1486	static const struct soc_device_attribute cpsw_soc_devices[] = {
1487	{ .family = "AM33xx", .revision = "ES1.0"},
1488	{ /* sentinel */ }
1489	};
1490
1491	static int cpsw_probe(struct platform_device *pdev)
1492	{
1493	struct device *dev = &pdev->dev;
1494	struct clk *clk;
1495	struct cpsw_platform_data *data;
1496	struct net_device *ndev;
1497	struct cpsw_priv *priv;
1498	void __iomem *ss_regs;
1499	struct resource *ss_res;
1500	struct gpio_descs *mode;
1501	const struct soc_device_attribute *soc;
1502	struct cpsw_common *cpsw;
1503	int ret = 0, ch;
1504	int irq;
1505
1506	cpsw = devm_kzalloc(dev, size: sizeof(struct cpsw_common), GFP_KERNEL);
1507	if (!cpsw)
1508	return -ENOMEM;
1509
1510	platform_set_drvdata(pdev, data: cpsw);
1511	cpsw_slave_index = cpsw_slave_index_priv;
1512
1513	cpsw->dev = dev;
1514
1515	mode = devm_gpiod_get_array_optional(dev, con_id: "mode", flags: GPIOD_OUT_LOW);
1516	if (IS_ERR(ptr: mode)) {
1517	ret = PTR_ERR(ptr: mode);
1518	dev_err(dev, "gpio request failed, ret %d\n", ret);
1519	return ret;
1520	}
1521
1522	clk = devm_clk_get(dev, id: "fck");
1523	if (IS_ERR(ptr: clk)) {
1524	ret = PTR_ERR(ptr: clk);
1525	dev_err(dev, "fck is not found %d\n", ret);
1526	return ret;
1527	}
1528	cpsw->bus_freq_mhz = clk_get_rate(clk) / 1000000;
1529
1530	ss_regs = devm_platform_get_and_ioremap_resource(pdev, index: 0, res: &ss_res);
1531	if (IS_ERR(ptr: ss_regs))
1532	return PTR_ERR(ptr: ss_regs);
1533	cpsw->regs = ss_regs;
1534
1535	cpsw->wr_regs = devm_platform_ioremap_resource(pdev, index: 1);
1536	if (IS_ERR(ptr: cpsw->wr_regs))
1537	return PTR_ERR(ptr: cpsw->wr_regs);
1538
1539	/* RX IRQ */
1540	irq = platform_get_irq(pdev, 1);
1541	if (irq < 0)
1542	return irq;
1543	cpsw->irqs_table[0] = irq;
1544
1545	/* TX IRQ */
1546	irq = platform_get_irq(pdev, 2);
1547	if (irq < 0)
1548	return irq;
1549	cpsw->irqs_table[1] = irq;
1550
1551	/* get misc irq*/
1552	irq = platform_get_irq(pdev, 3);
1553	if (irq <= 0)
1554	return irq;
1555	cpsw->misc_irq = irq;
1556
1557	/*
1558	* This may be required here for child devices.
1559	*/
1560	pm_runtime_enable(dev);
1561
1562	/* Need to enable clocks with runtime PM api to access module
1563	* registers
1564	*/
1565	ret = pm_runtime_resume_and_get(dev);
1566	if (ret < 0)
1567	goto clean_runtime_disable_ret;
1568
1569	ret = cpsw_probe_dt(data: &cpsw->data, pdev);
1570	if (ret)
1571	goto clean_dt_ret;
1572
1573	soc = soc_device_match(matches: cpsw_soc_devices);
1574	if (soc)
1575	cpsw->quirk_irq = true;
1576
1577	data = &cpsw->data;
1578	cpsw->slaves = devm_kcalloc(dev,
1579	n: data->slaves, size: sizeof(struct cpsw_slave),
1580	GFP_KERNEL);
1581	if (!cpsw->slaves) {
1582	ret = -ENOMEM;
1583	goto clean_dt_ret;
1584	}
1585
1586	cpsw->rx_packet_max = max(rx_packet_max, CPSW_MAX_PACKET_SIZE);
1587	cpsw->descs_pool_size = descs_pool_size;
1588
1589	ret = cpsw_init_common(cpsw, ss_regs, ale_ageout,
1590	desc_mem_phys: ss_res->start + CPSW2_BD_OFFSET,
1591	descs_pool_size);
1592	if (ret)
1593	goto clean_dt_ret;
1594
1595	ch = cpsw->quirk_irq ? 0 : 7;
1596	cpsw->txv[0].ch = cpdma_chan_create(ctlr: cpsw->dma, chan_num: ch, handler: cpsw_tx_handler, rx_type: 0);
1597	if (IS_ERR(ptr: cpsw->txv[0].ch)) {
1598	dev_err(dev, "error initializing tx dma channel\n");
1599	ret = PTR_ERR(ptr: cpsw->txv[0].ch);
1600	goto clean_cpts;
1601	}
1602
1603	cpsw->rxv[0].ch = cpdma_chan_create(ctlr: cpsw->dma, chan_num: 0, handler: cpsw_rx_handler, rx_type: 1);
1604	if (IS_ERR(ptr: cpsw->rxv[0].ch)) {
1605	dev_err(dev, "error initializing rx dma channel\n");
1606	ret = PTR_ERR(ptr: cpsw->rxv[0].ch);
1607	goto clean_cpts;
1608	}
1609	cpsw_split_res(cpsw);
1610
1611	/* setup netdev */
1612	ndev = devm_alloc_etherdev_mqs(dev, sizeof_priv: sizeof(struct cpsw_priv),
1613	CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);
1614	if (!ndev) {
1615	dev_err(dev, "error allocating net_device\n");
1616	ret = -ENOMEM;
1617	goto clean_cpts;
1618	}
1619
1620	priv = netdev_priv(dev: ndev);
1621	priv->cpsw = cpsw;
1622	priv->ndev = ndev;
1623	priv->dev = dev;
1624	priv->msg_enable = netif_msg_init(debug_value: debug_level, CPSW_DEBUG);
1625	priv->emac_port = 0;
1626
1627	if (is_valid_ether_addr(addr: data->slave_data[0].mac_addr)) {
1628	memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
1629	dev_info(dev, "Detected MACID = %pM\n", priv->mac_addr);
1630	} else {
1631	eth_random_addr(addr: priv->mac_addr);
1632	dev_info(dev, "Random MACID = %pM\n", priv->mac_addr);
1633	}
1634
1635	eth_hw_addr_set(dev: ndev, addr: priv->mac_addr);
1636
1637	cpsw->slaves[0].ndev = ndev;
1638
1639	ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
1640	ndev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
1641	NETDEV_XDP_ACT_NDO_XMIT;
1642
1643	ndev->netdev_ops = &cpsw_netdev_ops;
1644	ndev->ethtool_ops = &cpsw_ethtool_ops;
1645	netif_napi_add(dev: ndev, napi: &cpsw->napi_rx,
1646	poll: cpsw->quirk_irq ? cpsw_rx_poll : cpsw_rx_mq_poll);
1647	netif_napi_add_tx(dev: ndev, napi: &cpsw->napi_tx,
1648	poll: cpsw->quirk_irq ? cpsw_tx_poll : cpsw_tx_mq_poll);
1649
1650	/* register the network device */
1651	SET_NETDEV_DEV(ndev, dev);
1652	ndev->dev.of_node = cpsw->slaves[0].data->slave_node;
1653	ret = register_netdev(dev: ndev);
1654	if (ret) {
1655	dev_err(dev, "error registering net device\n");
1656	ret = -ENODEV;
1657	goto clean_cpts;
1658	}
1659
1660	if (cpsw->data.dual_emac) {
1661	ret = cpsw_probe_dual_emac(priv);
1662	if (ret) {
1663	cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
1664	goto clean_unregister_netdev_ret;
1665	}
1666	}
1667
1668	/* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
1669	* MISC IRQs which are always kept disabled with this driver so
1670	* we will not request them.
1671	*
1672	* If anyone wants to implement support for those, make sure to
1673	* first request and append them to irqs_table array.
1674	*/
1675	ret = devm_request_irq(dev, irq: cpsw->irqs_table[0], handler: cpsw_rx_interrupt,
1676	irqflags: 0, devname: dev_name(dev), dev_id: cpsw);
1677	if (ret < 0) {
1678	dev_err(dev, "error attaching irq (%d)\n", ret);
1679	goto clean_unregister_netdev_ret;
1680	}
1681
1682
1683	ret = devm_request_irq(dev, irq: cpsw->irqs_table[1], handler: cpsw_tx_interrupt,
1684	irqflags: 0, devname: dev_name(dev: &pdev->dev), dev_id: cpsw);
1685	if (ret < 0) {
1686	dev_err(dev, "error attaching irq (%d)\n", ret);
1687	goto clean_unregister_netdev_ret;
1688	}
1689
1690	if (!cpsw->cpts)
1691	goto skip_cpts;
1692
1693	ret = devm_request_irq(dev: &pdev->dev, irq: cpsw->misc_irq, handler: cpsw_misc_interrupt,
1694	irqflags: 0, devname: dev_name(dev: &pdev->dev), dev_id: cpsw);
1695	if (ret < 0) {
1696	dev_err(dev, "error attaching misc irq (%d)\n", ret);
1697	goto clean_unregister_netdev_ret;
1698	}
1699
1700	/* Enable misc CPTS evnt_pend IRQ */
1701	cpts_set_irqpoll(cpts: cpsw->cpts, en: false);
1702
1703	skip_cpts:
1704	cpsw_notice(priv, probe,
1705	"initialized device (regs %pa, irq %d, pool size %d)\n",
1706	&ss_res->start, cpsw->irqs_table[0], descs_pool_size);
1707
1708	pm_runtime_put(dev: &pdev->dev);
1709
1710	return 0;
1711
1712	clean_unregister_netdev_ret:
1713	unregister_netdev(dev: ndev);
1714	clean_cpts:
1715	cpts_release(cpts: cpsw->cpts);
1716	cpdma_ctlr_destroy(ctlr: cpsw->dma);
1717	clean_dt_ret:
1718	cpsw_remove_dt(pdev);
1719	pm_runtime_put_sync(dev: &pdev->dev);
1720	clean_runtime_disable_ret:
1721	pm_runtime_disable(dev: &pdev->dev);
1722	return ret;
1723	}
1724
1725	static int cpsw_remove(struct platform_device *pdev)
1726	{
1727	struct cpsw_common *cpsw = platform_get_drvdata(pdev);
1728	int i, ret;
1729
1730	ret = pm_runtime_resume_and_get(dev: &pdev->dev);
1731	if (ret < 0)
1732	return ret;
1733
1734	for (i = 0; i < cpsw->data.slaves; i++)
1735	if (cpsw->slaves[i].ndev)
1736	unregister_netdev(dev: cpsw->slaves[i].ndev);
1737
1738	cpts_release(cpts: cpsw->cpts);
1739	cpdma_ctlr_destroy(ctlr: cpsw->dma);
1740	cpsw_remove_dt(pdev);
1741	pm_runtime_put_sync(dev: &pdev->dev);
1742	pm_runtime_disable(dev: &pdev->dev);
1743	return 0;
1744	}
1745
1746	#ifdef CONFIG_PM_SLEEP
1747	static int cpsw_suspend(struct device *dev)
1748	{
1749	struct cpsw_common *cpsw = dev_get_drvdata(dev);
1750	int i;
1751
1752	rtnl_lock();
1753
1754	for (i = 0; i < cpsw->data.slaves; i++)
1755	if (cpsw->slaves[i].ndev)
1756	if (netif_running(dev: cpsw->slaves[i].ndev))
1757	cpsw_ndo_stop(ndev: cpsw->slaves[i].ndev);
1758
1759	rtnl_unlock();
1760
1761	/* Select sleep pin state */
1762	pinctrl_pm_select_sleep_state(dev);
1763
1764	return 0;
1765	}
1766
1767	static int cpsw_resume(struct device *dev)
1768	{
1769	struct cpsw_common *cpsw = dev_get_drvdata(dev);
1770	int i;
1771
1772	/* Select default pin state */
1773	pinctrl_pm_select_default_state(dev);
1774
1775	/* shut up ASSERT_RTNL() warning in netif_set_real_num_tx/rx_queues */
1776	rtnl_lock();
1777
1778	for (i = 0; i < cpsw->data.slaves; i++)
1779	if (cpsw->slaves[i].ndev)
1780	if (netif_running(dev: cpsw->slaves[i].ndev))
1781	cpsw_ndo_open(ndev: cpsw->slaves[i].ndev);
1782
1783	rtnl_unlock();
1784
1785	return 0;
1786	}
1787	#endif
1788
1789	static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);
1790
1791	static struct platform_driver cpsw_driver = {
1792	.driver = {
1793	.name = "cpsw",
1794	.pm = &cpsw_pm_ops,
1795	.of_match_table = cpsw_of_mtable,
1796	},
1797	.probe = cpsw_probe,
1798	.remove = cpsw_remove,
1799	};
1800
1801	module_platform_driver(cpsw_driver);
1802
1803	MODULE_LICENSE("GPL");
1804	MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>");
1805	MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>");
1806	MODULE_DESCRIPTION("TI CPSW Ethernet driver");
1807