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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_device.h>
31#include <linux/if_vlan.h>
32#include <linux/kmemleak.h>
33#include <linux/sys_soc.h>
34#include <net/page_pool.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
50static int debug_level;
51module_param(debug_level, int, 0);
52MODULE_PARM_DESC(debug_level, "cpsw debug level (NETIF_MSG bits)");
53
54static int ale_ageout = 10;
55module_param(ale_ageout, int, 0);
56MODULE_PARM_DESC(ale_ageout, "cpsw ale ageout interval (seconds)");
57
58static int rx_packet_max = CPSW_MAX_PACKET_SIZE;
59module_param(rx_packet_max, int, 0);
60MODULE_PARM_DESC(rx_packet_max, "maximum receive packet size (bytes)");
61
62static int descs_pool_size = CPSW_CPDMA_DESCS_POOL_SIZE_DEFAULT;
63module_param(descs_pool_size, int, 0444);
64MODULE_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
80static 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
86static int cpsw_get_slave_port(u32 slave_num)
87{
88 return slave_num + 1;
89}
90
91static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
92 __be16 proto, u16 vid);
93
94static 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
104
105
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
118 cpsw_ale_control_set(ale, 0, ALE_BYPASS, 1);
119
120 dev_dbg(&ndev->dev, "promiscuity enabled\n");
121 } else {
122
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
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
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
148 cpsw_ale_flush_multicast(ale, ALE_ALL_PORTS, -1);
149 __hw_addr_ref_unsync_dev(&ndev->mc, ndev, NULL);
150
151
152 cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 1);
153 dev_dbg(&ndev->dev, "promiscuity enabled\n");
154 } else {
155
156 cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 0);
157
158
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
172
173
174
175
176
177
178static 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
203static 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
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
235static 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
252static 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
268static 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
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
293static 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
308static 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
319 cpsw_set_promiscious(ndev, true);
320 cpsw_ale_set_allmulti(cpsw->ale, IFF_ALLMULTI, slave_port);
321 return;
322 } else {
323
324 cpsw_set_promiscious(ndev, false);
325 }
326
327
328 cpsw_ale_set_allmulti(cpsw->ale,
329 ndev->flags & IFF_ALLMULTI, slave_port);
330
331
332 __hw_addr_ref_sync_dev(&ndev->mc, ndev, cpsw_add_mc_addr,
333 cpsw_del_mc_addr);
334}
335
336static unsigned int cpsw_rxbuf_total_len(unsigned int len)
337{
338 len += CPSW_HEADROOM;
339 len += SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
340
341 return SKB_DATA_ALIGN(len);
342}
343
344static 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;
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(ndev);
367 pool = cpsw->page_pool[ch];
368 if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
369
370 if (cpsw->data.dual_emac && cpsw->usage_count &&
371 (status >= 0)) {
372
373
374
375
376
377
378 new_page = page;
379 goto requeue;
380 }
381
382
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 headroom = CPSW_HEADROOM, size = len;
396
397 xdp_init_buff(&xdp, PAGE_SIZE, &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, pa, headroom, size, false);
404
405 port = priv->emac_port + cpsw->data.dual_emac;
406 ret = cpsw_run_xdp(priv, ch, &xdp, page, port, &len);
407 if (ret != CPSW_XDP_PASS)
408 goto requeue;
409
410 headroom = xdp.data - xdp.data_hard_start;
411
412
413 status &= ~CPDMA_RX_VLAN_ENCAP;
414 }
415
416
417 skb = build_skb(pa, cpsw_rxbuf_total_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, 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(cpsw->cpts, skb);
431 skb->protocol = eth_type_trans(skb, ndev);
432
433
434 page_pool_release_page(pool, page);
435 netif_receive_skb(skb);
436
437 ndev->stats.rx_bytes += len;
438 ndev->stats.rx_packets++;
439
440requeue:
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(new_page) + CPSW_HEADROOM;
446 ret = cpdma_chan_submit_mapped(cpsw->rxv[ch].ch, new_page, dma,
447 pkt_size, 0);
448 if (ret < 0) {
449 WARN_ON(ret == -ENOMEM);
450 page_pool_recycle_direct(pool, new_page);
451 }
452}
453
454static 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->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
476 if (phy->speed == 100)
477 mac_control |= CPSW_SL_CTL_IFCTL_A;
478
479 else if ((phy->speed == 10) && phy_interface_is_rgmii(phy))
480 mac_control |= CPSW_SL_CTL_EXT_EN;
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(slave->mac_sl, mac_control);
490
491
492 cpsw_ale_control_set(cpsw->ale, slave_port,
493 ALE_PORT_STATE, 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
505 cpsw_ale_control_set(cpsw->ale, slave_port,
506 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
507
508 cpsw_sl_wait_for_idle(slave->mac_sl, 100);
509
510 cpsw_sl_ctl_reset(slave->mac_sl);
511 }
512
513 if (mac_control != slave->mac_control)
514 phy_print_status(phy);
515
516 slave->mac_control = mac_control;
517}
518
519static void cpsw_adjust_link(struct net_device *ndev)
520{
521 struct cpsw_priv *priv = netdev_priv(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(ndev);
532 if (netif_running(ndev))
533 netif_tx_wake_all_queues(ndev);
534 } else {
535 netif_carrier_off(ndev);
536 netif_tx_stop_all_queues(ndev);
537 }
538}
539
540static 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, slave->port_vlan, CPSW1_PORT_VLAN);
549 else
550 slave_write(slave, slave->port_vlan, CPSW2_PORT_VLAN);
551 cpsw_ale_add_vlan(cpsw->ale, slave->port_vlan, port_mask,
552 port_mask, port_mask, 0);
553 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
554 ALE_PORT_HOST, ALE_VLAN, slave->port_vlan, 0);
555 cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
556 HOST_PORT_NUM, ALE_VLAN |
557 ALE_SECURE, slave->port_vlan);
558 cpsw_ale_control_set(cpsw->ale, slave_port,
559 ALE_PORT_DROP_UNKNOWN_VLAN, 1);
560}
561
562static 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(slave->mac_sl, 100);
569 cpsw_sl_ctl_reset(slave->mac_sl);
570
571
572 cpsw_sl_reg_write(slave->mac_sl, 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
579
580
581 slave_write(slave,
582 (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
590
591
592 slave_write(slave,
593 (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
594 CPSW_MAX_BLKS_RX, CPSW2_MAX_BLKS);
595 break;
596 }
597
598
599 cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_MAXLEN,
600 cpsw->rx_packet_max);
601 cpsw_set_slave_mac(slave, priv);
602
603 slave->mac_control = 0;
604
605 slave_port = cpsw_get_slave_port(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(cpsw->ale, priv->ndev->broadcast,
611 1 << slave_port, 0, 0, ALE_MCAST_FWD_2);
612
613 if (slave->data->phy_node) {
614 phy = of_phy_connect(priv->ndev, slave->data->phy_node,
615 &cpsw_adjust_link, 0, 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(priv->ndev, slave->data->phy_id,
624 &cpsw_adjust_link, slave->data->phy_if);
625 if (IS_ERR(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(slave->phy);
637
638 phy_start(slave->phy);
639
640
641 if (!IS_ERR(slave->data->ifphy))
642 phy_set_mode_ext(slave->data->ifphy, PHY_MODE_ETHERNET,
643 slave->data->phy_if);
644 else
645 cpsw_phy_sel(cpsw->dev, slave->phy->interface,
646 slave->slave_num);
647}
648
649static 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(vlan, &cpsw->host_port_regs->port_vlan);
661
662 for (i = 0; i < cpsw->data.slaves; i++)
663 slave_write(cpsw->slaves + i, vlan, 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(cpsw->ale, vlan, ALE_ALL_PORTS,
671 ALE_ALL_PORTS, ALE_ALL_PORTS,
672 unreg_mcast_mask);
673}
674
675static 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
682 soft_reset("cpsw", &cpsw->regs->soft_reset);
683 cpsw_ale_start(cpsw->ale);
684
685
686 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_VLAN_AWARE,
687 CPSW_ALE_VLAN_AWARE);
688 control_reg = readl(&cpsw->regs->control);
689 control_reg |= CPSW_VLAN_AWARE | CPSW_RX_VLAN_ENCAP;
690 writel(control_reg, &cpsw->regs->control);
691 fifo_mode = (cpsw->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :
692 CPSW_FIFO_NORMAL_MODE;
693 writel(fifo_mode, &cpsw->host_port_regs->tx_in_ctl);
694
695
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(cpsw->ale, HOST_PORT_NUM,
701 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
702
703 if (!cpsw->data.dual_emac) {
704 cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
705 0, 0);
706 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
707 ALE_PORT_HOST, 0, 0, ALE_MCAST_FWD_2);
708 }
709}
710
711static 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->slave_num);
716
717 if (!slave->phy)
718 return;
719 phy_stop(slave->phy);
720 phy_disconnect(slave->phy);
721 slave->phy = NULL;
722 cpsw_ale_control_set(cpsw->ale, slave_port,
723 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
724 cpsw_sl_reset(slave->mac_sl, 100);
725 cpsw_sl_ctl_reset(slave->mac_sl);
726}
727
728static 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(priv->ndev, 0, vid);
736 return 0;
737}
738
739
740static void cpsw_restore(struct cpsw_priv *priv)
741{
742
743 vlan_for_each(priv->ndev, cpsw_restore_vlans, priv);
744
745
746 for_each_slave(priv, cpsw_mqprio_resume, priv);
747
748
749 for_each_slave(priv, cpsw_cbs_resume, priv);
750}
751
752static int cpsw_ndo_open(struct net_device *ndev)
753{
754 struct cpsw_priv *priv = netdev_priv(ndev);
755 struct cpsw_common *cpsw = priv->cpsw;
756 int ret;
757 u32 reg;
758
759 ret = pm_runtime_get_sync(cpsw->dev);
760 if (ret < 0) {
761 pm_runtime_put_noidle(cpsw->dev);
762 return ret;
763 }
764
765 netif_carrier_off(ndev);
766
767
768 ret = netif_set_real_num_tx_queues(ndev, cpsw->tx_ch_num);
769 if (ret) {
770 dev_err(priv->dev, "cannot set real number of tx queues\n");
771 goto err_cleanup;
772 }
773
774 ret = netif_set_real_num_rx_queues(ndev, cpsw->rx_ch_num);
775 if (ret) {
776 dev_err(priv->dev, "cannot set real number of rx queues\n");
777 goto err_cleanup;
778 }
779
780 reg = cpsw->version;
781
782 dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
783 CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
784 CPSW_RTL_VERSION(reg));
785
786
787 if (!cpsw->usage_count)
788 cpsw_init_host_port(priv);
789 for_each_slave(priv, cpsw_slave_open, priv);
790
791
792 if (!cpsw->data.dual_emac)
793 cpsw_add_default_vlan(priv);
794 else
795 cpsw_ale_add_vlan(cpsw->ale, cpsw->data.default_vlan,
796 ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0);
797
798
799 if (!cpsw->usage_count) {
800
801 writel_relaxed(0, &cpsw->regs->ptype);
802
803
804 writel_relaxed(0x7, &cpsw->regs->stat_port_en);
805
806
807 writel(0x7, &cpsw->regs->flow_control);
808
809 napi_enable(&cpsw->napi_rx);
810 napi_enable(&cpsw->napi_tx);
811
812 if (cpsw->tx_irq_disabled) {
813 cpsw->tx_irq_disabled = false;
814 enable_irq(cpsw->irqs_table[1]);
815 }
816
817 if (cpsw->rx_irq_disabled) {
818 cpsw->rx_irq_disabled = false;
819 enable_irq(cpsw->irqs_table[0]);
820 }
821
822
823
824
825 ret = cpsw_create_xdp_rxqs(cpsw);
826 if (ret < 0)
827 goto err_cleanup;
828
829 ret = cpsw_fill_rx_channels(priv);
830 if (ret < 0)
831 goto err_cleanup;
832
833 if (cpsw->cpts) {
834 if (cpts_register(cpsw->cpts))
835 dev_err(priv->dev, "error registering cpts device\n");
836 else
837 writel(0x10, &cpsw->wr_regs->misc_en);
838 }
839 }
840
841 cpsw_restore(priv);
842
843
844 if (cpsw->coal_intvl != 0) {
845 struct ethtool_coalesce coal;
846
847 coal.rx_coalesce_usecs = cpsw->coal_intvl;
848 cpsw_set_coalesce(ndev, &coal);
849 }
850
851 cpdma_ctlr_start(cpsw->dma);
852 cpsw_intr_enable(cpsw);
853 cpsw->usage_count++;
854
855 return 0;
856
857err_cleanup:
858 if (!cpsw->usage_count) {
859 cpdma_ctlr_stop(cpsw->dma);
860 cpsw_destroy_xdp_rxqs(cpsw);
861 }
862
863 for_each_slave(priv, cpsw_slave_stop, cpsw);
864 pm_runtime_put_sync(cpsw->dev);
865 netif_carrier_off(priv->ndev);
866 return ret;
867}
868
869static int cpsw_ndo_stop(struct net_device *ndev)
870{
871 struct cpsw_priv *priv = netdev_priv(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(&ndev->mc, ndev, cpsw_purge_all_mc);
876 netif_tx_stop_all_queues(priv->ndev);
877 netif_carrier_off(priv->ndev);
878
879 if (cpsw->usage_count <= 1) {
880 napi_disable(&cpsw->napi_rx);
881 napi_disable(&cpsw->napi_tx);
882 cpts_unregister(cpsw->cpts);
883 cpsw_intr_disable(cpsw);
884 cpdma_ctlr_stop(cpsw->dma);
885 cpsw_ale_stop(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(cpsw->dev);
895 return 0;
896}
897
898static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
899 struct net_device *ndev)
900{
901 struct cpsw_priv *priv = netdev_priv(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_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(ndev, q_idx);
924 skb_tx_timestamp(skb);
925 ret = cpdma_chan_submit(txch, skb, skb->data, skb->len,
926 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
933
934
935 if (unlikely(!cpdma_check_free_tx_desc(txch))) {
936 netif_tx_stop_queue(txq);
937
938
939 smp_mb__after_atomic();
940
941 if (cpdma_check_free_tx_desc(txch))
942 netif_tx_wake_queue(txq);
943 }
944
945 return NETDEV_TX_OK;
946fail:
947 ndev->stats.tx_dropped++;
948 netif_tx_stop_queue(txq);
949
950
951 smp_mb__after_atomic();
952
953 if (cpdma_check_free_tx_desc(txch))
954 netif_tx_wake_queue(txq);
955
956 return NETDEV_TX_BUSY;
957}
958
959static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
960{
961 struct cpsw_priv *priv = netdev_priv(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->sa_data))
969 return -EADDRNOTAVAIL;
970
971 ret = pm_runtime_get_sync(cpsw->dev);
972 if (ret < 0) {
973 pm_runtime_put_noidle(cpsw->dev);
974 return ret;
975 }
976
977 if (cpsw->data.dual_emac) {
978 vid = cpsw->slaves[priv->emac_port].port_vlan;
979 flags = ALE_VLAN;
980 }
981
982 cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
983 flags, vid);
984 cpsw_ale_add_ucast(cpsw->ale, addr->sa_data, HOST_PORT_NUM,
985 flags, vid);
986
987 memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
988 memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
989 for_each_slave(priv, cpsw_set_slave_mac, priv);
990
991 pm_runtime_put(cpsw->dev);
992
993 return 0;
994}
995
996static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
997 unsigned short vid)
998{
999 int ret;
1000 int unreg_mcast_mask = 0;
1001 int mcast_mask;
1002 u32 port_mask;
1003 struct cpsw_common *cpsw = priv->cpsw;
1004
1005 if (cpsw->data.dual_emac) {
1006 port_mask = (1 << (priv->emac_port + 1)) | ALE_PORT_HOST;
1007
1008 mcast_mask = ALE_PORT_HOST;
1009 if (priv->ndev->flags & IFF_ALLMULTI)
1010 unreg_mcast_mask = mcast_mask;
1011 } else {
1012 port_mask = ALE_ALL_PORTS;
1013 mcast_mask = port_mask;
1014
1015 if (priv->ndev->flags & IFF_ALLMULTI)
1016 unreg_mcast_mask = ALE_ALL_PORTS;
1017 else
1018 unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
1019 }
1020
1021 ret = cpsw_ale_add_vlan(cpsw->ale, vid, port_mask, 0, port_mask,
1022 unreg_mcast_mask);
1023 if (ret != 0)
1024 return ret;
1025
1026 ret = cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
1027 HOST_PORT_NUM, ALE_VLAN, vid);
1028 if (ret != 0)
1029 goto clean_vid;
1030
1031 ret = cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
1032 mcast_mask, ALE_VLAN, vid, 0);
1033 if (ret != 0)
1034 goto clean_vlan_ucast;
1035 return 0;
1036
1037clean_vlan_ucast:
1038 cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1039 HOST_PORT_NUM, ALE_VLAN, vid);
1040clean_vid:
1041 cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1042 return ret;
1043}
1044
1045static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1046 __be16 proto, u16 vid)
1047{
1048 struct cpsw_priv *priv = netdev_priv(ndev);
1049 struct cpsw_common *cpsw = priv->cpsw;
1050 int ret;
1051
1052 if (vid == cpsw->data.default_vlan)
1053 return 0;
1054
1055 ret = pm_runtime_get_sync(cpsw->dev);
1056 if (ret < 0) {
1057 pm_runtime_put_noidle(cpsw->dev);
1058 return ret;
1059 }
1060
1061 if (cpsw->data.dual_emac) {
1062
1063
1064
1065
1066 int i;
1067
1068 for (i = 0; i < cpsw->data.slaves; i++) {
1069 if (vid == cpsw->slaves[i].port_vlan) {
1070 ret = -EINVAL;
1071 goto err;
1072 }
1073 }
1074 }
1075
1076 dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1077 ret = cpsw_add_vlan_ale_entry(priv, vid);
1078err:
1079 pm_runtime_put(cpsw->dev);
1080 return ret;
1081}
1082
1083static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1084 __be16 proto, u16 vid)
1085{
1086 struct cpsw_priv *priv = netdev_priv(ndev);
1087 struct cpsw_common *cpsw = priv->cpsw;
1088 int ret;
1089
1090 if (vid == cpsw->data.default_vlan)
1091 return 0;
1092
1093 ret = pm_runtime_get_sync(cpsw->dev);
1094 if (ret < 0) {
1095 pm_runtime_put_noidle(cpsw->dev);
1096 return ret;
1097 }
1098
1099 if (cpsw->data.dual_emac) {
1100 int i;
1101
1102 for (i = 0; i < cpsw->data.slaves; i++) {
1103 if (vid == cpsw->slaves[i].port_vlan)
1104 goto err;
1105 }
1106 }
1107
1108 dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1109 ret = cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1110 ret |= cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1111 HOST_PORT_NUM, ALE_VLAN, vid);
1112 ret |= cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
1113 0, ALE_VLAN, vid);
1114 ret |= cpsw_ale_flush_multicast(cpsw->ale, ALE_PORT_HOST, vid);
1115err:
1116 pm_runtime_put(cpsw->dev);
1117 return ret;
1118}
1119
1120static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n,
1121 struct xdp_frame **frames, u32 flags)
1122{
1123 struct cpsw_priv *priv = netdev_priv(ndev);
1124 struct cpsw_common *cpsw = priv->cpsw;
1125 struct xdp_frame *xdpf;
1126 int i, nxmit = 0, port;
1127
1128 if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
1129 return -EINVAL;
1130
1131 for (i = 0; i < n; i++) {
1132 xdpf = frames[i];
1133 if (xdpf->len < CPSW_MIN_PACKET_SIZE)
1134 break;
1135
1136 port = priv->emac_port + cpsw->data.dual_emac;
1137 if (cpsw_xdp_tx_frame(priv, xdpf, NULL, port))
1138 break;
1139 nxmit++;
1140 }
1141
1142 return nxmit;
1143}
1144
1145#ifdef CONFIG_NET_POLL_CONTROLLER
1146static void cpsw_ndo_poll_controller(struct net_device *ndev)
1147{
1148 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1149
1150 cpsw_intr_disable(cpsw);
1151 cpsw_rx_interrupt(cpsw->irqs_table[0], cpsw);
1152 cpsw_tx_interrupt(cpsw->irqs_table[1], cpsw);
1153 cpsw_intr_enable(cpsw);
1154}
1155#endif
1156
1157static const struct net_device_ops cpsw_netdev_ops = {
1158 .ndo_open = cpsw_ndo_open,
1159 .ndo_stop = cpsw_ndo_stop,
1160 .ndo_start_xmit = cpsw_ndo_start_xmit,
1161 .ndo_set_mac_address = cpsw_ndo_set_mac_address,
1162 .ndo_do_ioctl = cpsw_ndo_ioctl,
1163 .ndo_validate_addr = eth_validate_addr,
1164 .ndo_tx_timeout = cpsw_ndo_tx_timeout,
1165 .ndo_set_rx_mode = cpsw_ndo_set_rx_mode,
1166 .ndo_set_tx_maxrate = cpsw_ndo_set_tx_maxrate,
1167#ifdef CONFIG_NET_POLL_CONTROLLER
1168 .ndo_poll_controller = cpsw_ndo_poll_controller,
1169#endif
1170 .ndo_vlan_rx_add_vid = cpsw_ndo_vlan_rx_add_vid,
1171 .ndo_vlan_rx_kill_vid = cpsw_ndo_vlan_rx_kill_vid,
1172 .ndo_setup_tc = cpsw_ndo_setup_tc,
1173 .ndo_bpf = cpsw_ndo_bpf,
1174 .ndo_xdp_xmit = cpsw_ndo_xdp_xmit,
1175};
1176
1177static void cpsw_get_drvinfo(struct net_device *ndev,
1178 struct ethtool_drvinfo *info)
1179{
1180 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1181 struct platform_device *pdev = to_platform_device(cpsw->dev);
1182
1183 strlcpy(info->driver, "cpsw", sizeof(info->driver));
1184 strlcpy(info->version, "1.0", sizeof(info->version));
1185 strlcpy(info->bus_info, pdev->name, sizeof(info->bus_info));
1186}
1187
1188static int cpsw_set_pauseparam(struct net_device *ndev,
1189 struct ethtool_pauseparam *pause)
1190{
1191 struct cpsw_priv *priv = netdev_priv(ndev);
1192 bool link;
1193
1194 priv->rx_pause = pause->rx_pause ? true : false;
1195 priv->tx_pause = pause->tx_pause ? true : false;
1196
1197 for_each_slave(priv, _cpsw_adjust_link, priv, &link);
1198 return 0;
1199}
1200
1201static int cpsw_set_channels(struct net_device *ndev,
1202 struct ethtool_channels *chs)
1203{
1204 return cpsw_set_channels_common(ndev, chs, cpsw_rx_handler);
1205}
1206
1207static const struct ethtool_ops cpsw_ethtool_ops = {
1208 .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
1209 .get_drvinfo = cpsw_get_drvinfo,
1210 .get_msglevel = cpsw_get_msglevel,
1211 .set_msglevel = cpsw_set_msglevel,
1212 .get_link = ethtool_op_get_link,
1213 .get_ts_info = cpsw_get_ts_info,
1214 .get_coalesce = cpsw_get_coalesce,
1215 .set_coalesce = cpsw_set_coalesce,
1216 .get_sset_count = cpsw_get_sset_count,
1217 .get_strings = cpsw_get_strings,
1218 .get_ethtool_stats = cpsw_get_ethtool_stats,
1219 .get_pauseparam = cpsw_get_pauseparam,
1220 .set_pauseparam = cpsw_set_pauseparam,
1221 .get_wol = cpsw_get_wol,
1222 .set_wol = cpsw_set_wol,
1223 .get_regs_len = cpsw_get_regs_len,
1224 .get_regs = cpsw_get_regs,
1225 .begin = cpsw_ethtool_op_begin,
1226 .complete = cpsw_ethtool_op_complete,
1227 .get_channels = cpsw_get_channels,
1228 .set_channels = cpsw_set_channels,
1229 .get_link_ksettings = cpsw_get_link_ksettings,
1230 .set_link_ksettings = cpsw_set_link_ksettings,
1231 .get_eee = cpsw_get_eee,
1232 .set_eee = cpsw_set_eee,
1233 .nway_reset = cpsw_nway_reset,
1234 .get_ringparam = cpsw_get_ringparam,
1235 .set_ringparam = cpsw_set_ringparam,
1236};
1237
1238static int cpsw_probe_dt(struct cpsw_platform_data *data,
1239 struct platform_device *pdev)
1240{
1241 struct device_node *node = pdev->dev.of_node;
1242 struct device_node *slave_node;
1243 int i = 0, ret;
1244 u32 prop;
1245
1246 if (!node)
1247 return -EINVAL;
1248
1249 if (of_property_read_u32(node, "slaves", &prop)) {
1250 dev_err(&pdev->dev, "Missing slaves property in the DT.\n");
1251 return -EINVAL;
1252 }
1253 data->slaves = prop;
1254
1255 if (of_property_read_u32(node, "active_slave", &prop)) {
1256 dev_err(&pdev->dev, "Missing active_slave property in the DT.\n");
1257 return -EINVAL;
1258 }
1259 data->active_slave = prop;
1260
1261 data->slave_data = devm_kcalloc(&pdev->dev,
1262 data->slaves,
1263 sizeof(struct cpsw_slave_data),
1264 GFP_KERNEL);
1265 if (!data->slave_data)
1266 return -ENOMEM;
1267
1268 if (of_property_read_u32(node, "cpdma_channels", &prop)) {
1269 dev_err(&pdev->dev, "Missing cpdma_channels property in the DT.\n");
1270 return -EINVAL;
1271 }
1272 data->channels = prop;
1273
1274 if (of_property_read_u32(node, "bd_ram_size", &prop)) {
1275 dev_err(&pdev->dev, "Missing bd_ram_size property in the DT.\n");
1276 return -EINVAL;
1277 }
1278 data->bd_ram_size = prop;
1279
1280 if (of_property_read_u32(node, "mac_control", &prop)) {
1281 dev_err(&pdev->dev, "Missing mac_control property in the DT.\n");
1282 return -EINVAL;
1283 }
1284 data->mac_control = prop;
1285
1286 if (of_property_read_bool(node, "dual_emac"))
1287 data->dual_emac = true;
1288
1289
1290
1291
1292 ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
1293
1294 if (ret)
1295 dev_warn(&pdev->dev, "Doesn't have any child node\n");
1296
1297 for_each_available_child_of_node(node, slave_node) {
1298 struct cpsw_slave_data *slave_data = data->slave_data + i;
1299 int lenp;
1300 const __be32 *parp;
1301
1302
1303 if (!of_node_name_eq(slave_node, "slave"))
1304 continue;
1305
1306 slave_data->ifphy = devm_of_phy_get(&pdev->dev, slave_node,
1307 NULL);
1308 if (!IS_ENABLED(CONFIG_TI_CPSW_PHY_SEL) &&
1309 IS_ERR(slave_data->ifphy)) {
1310 ret = PTR_ERR(slave_data->ifphy);
1311 dev_err(&pdev->dev,
1312 "%d: Error retrieving port phy: %d\n", i, ret);
1313 goto err_node_put;
1314 }
1315
1316 slave_data->slave_node = slave_node;
1317 slave_data->phy_node = of_parse_phandle(slave_node,
1318 "phy-handle", 0);
1319 parp = of_get_property(slave_node, "phy_id", &lenp);
1320 if (slave_data->phy_node) {
1321 dev_dbg(&pdev->dev,
1322 "slave[%d] using phy-handle=\"%pOF\"\n",
1323 i, slave_data->phy_node);
1324 } else if (of_phy_is_fixed_link(slave_node)) {
1325
1326
1327
1328 ret = of_phy_register_fixed_link(slave_node);
1329 if (ret) {
1330 if (ret != -EPROBE_DEFER)
1331 dev_err(&pdev->dev, "failed to register fixed-link phy: %d\n", ret);
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
1369no_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
1398err_node_put:
1399 of_node_put(slave_node);
1400 return ret;
1401}
1402
1403static 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
1432static 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 memcpy(ndev->dev_addr, priv_sl2->mac_addr, ETH_ALEN);
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
1469 ndev->netdev_ops = &cpsw_netdev_ops;
1470 ndev->ethtool_ops = &cpsw_ethtool_ops;
1471
1472
1473 SET_NETDEV_DEV(ndev, cpsw->dev);
1474 ndev->dev.of_node = cpsw->slaves[1].data->slave_node;
1475 ret = register_netdev(ndev);
1476 if (ret)
1477 dev_err(cpsw->dev, "cpsw: error registering net device\n");
1478
1479 return ret;
1480}
1481
1482static const struct of_device_id cpsw_of_mtable[] = {
1483 { .compatible = "ti,cpsw"},
1484 { .compatible = "ti,am335x-cpsw"},
1485 { .compatible = "ti,am4372-cpsw"},
1486 { .compatible = "ti,dra7-cpsw"},
1487 { },
1488};
1489MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
1490
1491static const struct soc_device_attribute cpsw_soc_devices[] = {
1492 { .family = "AM33xx", .revision = "ES1.0"},
1493 { }
1494};
1495
1496static int cpsw_probe(struct platform_device *pdev)
1497{
1498 struct device *dev = &pdev->dev;
1499 struct clk *clk;
1500 struct cpsw_platform_data *data;
1501 struct net_device *ndev;
1502 struct cpsw_priv *priv;
1503 void __iomem *ss_regs;
1504 struct resource *ss_res;
1505 struct gpio_descs *mode;
1506 const struct soc_device_attribute *soc;
1507 struct cpsw_common *cpsw;
1508 int ret = 0, ch;
1509 int irq;
1510
1511 cpsw = devm_kzalloc(dev, sizeof(struct cpsw_common), GFP_KERNEL);
1512 if (!cpsw)
1513 return -ENOMEM;
1514
1515 platform_set_drvdata(pdev, cpsw);
1516 cpsw_slave_index = cpsw_slave_index_priv;
1517
1518 cpsw->dev = dev;
1519
1520 mode = devm_gpiod_get_array_optional(dev, "mode", GPIOD_OUT_LOW);
1521 if (IS_ERR(mode)) {
1522 ret = PTR_ERR(mode);
1523 dev_err(dev, "gpio request failed, ret %d\n", ret);
1524 return ret;
1525 }
1526
1527 clk = devm_clk_get(dev, "fck");
1528 if (IS_ERR(clk)) {
1529 ret = PTR_ERR(clk);
1530 dev_err(dev, "fck is not found %d\n", ret);
1531 return ret;
1532 }
1533 cpsw->bus_freq_mhz = clk_get_rate(clk) / 1000000;
1534
1535 ss_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1536 ss_regs = devm_ioremap_resource(dev, ss_res);
1537 if (IS_ERR(ss_regs))
1538 return PTR_ERR(ss_regs);
1539 cpsw->regs = ss_regs;
1540
1541 cpsw->wr_regs = devm_platform_ioremap_resource(pdev, 1);
1542 if (IS_ERR(cpsw->wr_regs))
1543 return PTR_ERR(cpsw->wr_regs);
1544
1545
1546 irq = platform_get_irq(pdev, 1);
1547 if (irq < 0)
1548 return irq;
1549 cpsw->irqs_table[0] = irq;
1550
1551
1552 irq = platform_get_irq(pdev, 2);
1553 if (irq < 0)
1554 return irq;
1555 cpsw->irqs_table[1] = irq;
1556
1557
1558 irq = platform_get_irq(pdev, 3);
1559 if (irq <= 0)
1560 return irq;
1561 cpsw->misc_irq = irq;
1562
1563
1564
1565
1566 pm_runtime_enable(dev);
1567
1568
1569
1570
1571 ret = pm_runtime_get_sync(dev);
1572 if (ret < 0) {
1573 pm_runtime_put_noidle(dev);
1574 goto clean_runtime_disable_ret;
1575 }
1576
1577 ret = cpsw_probe_dt(&cpsw->data, pdev);
1578 if (ret)
1579 goto clean_dt_ret;
1580
1581 soc = soc_device_match(cpsw_soc_devices);
1582 if (soc)
1583 cpsw->quirk_irq = true;
1584
1585 data = &cpsw->data;
1586 cpsw->slaves = devm_kcalloc(dev,
1587 data->slaves, sizeof(struct cpsw_slave),
1588 GFP_KERNEL);
1589 if (!cpsw->slaves) {
1590 ret = -ENOMEM;
1591 goto clean_dt_ret;
1592 }
1593
1594 cpsw->rx_packet_max = max(rx_packet_max, CPSW_MAX_PACKET_SIZE);
1595 cpsw->descs_pool_size = descs_pool_size;
1596
1597 ret = cpsw_init_common(cpsw, ss_regs, ale_ageout,
1598 ss_res->start + CPSW2_BD_OFFSET,
1599 descs_pool_size);
1600 if (ret)
1601 goto clean_dt_ret;
1602
1603 ch = cpsw->quirk_irq ? 0 : 7;
1604 cpsw->txv[0].ch = cpdma_chan_create(cpsw->dma, ch, cpsw_tx_handler, 0);
1605 if (IS_ERR(cpsw->txv[0].ch)) {
1606 dev_err(dev, "error initializing tx dma channel\n");
1607 ret = PTR_ERR(cpsw->txv[0].ch);
1608 goto clean_cpts;
1609 }
1610
1611 cpsw->rxv[0].ch = cpdma_chan_create(cpsw->dma, 0, cpsw_rx_handler, 1);
1612 if (IS_ERR(cpsw->rxv[0].ch)) {
1613 dev_err(dev, "error initializing rx dma channel\n");
1614 ret = PTR_ERR(cpsw->rxv[0].ch);
1615 goto clean_cpts;
1616 }
1617 cpsw_split_res(cpsw);
1618
1619
1620 ndev = devm_alloc_etherdev_mqs(dev, sizeof(struct cpsw_priv),
1621 CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);
1622 if (!ndev) {
1623 dev_err(dev, "error allocating net_device\n");
1624 ret = -ENOMEM;
1625 goto clean_cpts;
1626 }
1627
1628 priv = netdev_priv(ndev);
1629 priv->cpsw = cpsw;
1630 priv->ndev = ndev;
1631 priv->dev = dev;
1632 priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1633 priv->emac_port = 0;
1634
1635 if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {
1636 memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
1637 dev_info(dev, "Detected MACID = %pM\n", priv->mac_addr);
1638 } else {
1639 eth_random_addr(priv->mac_addr);
1640 dev_info(dev, "Random MACID = %pM\n", priv->mac_addr);
1641 }
1642
1643 memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
1644
1645 cpsw->slaves[0].ndev = ndev;
1646
1647 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
1648
1649 ndev->netdev_ops = &cpsw_netdev_ops;
1650 ndev->ethtool_ops = &cpsw_ethtool_ops;
1651 netif_napi_add(ndev, &cpsw->napi_rx,
1652 cpsw->quirk_irq ? cpsw_rx_poll : cpsw_rx_mq_poll,
1653 CPSW_POLL_WEIGHT);
1654 netif_tx_napi_add(ndev, &cpsw->napi_tx,
1655 cpsw->quirk_irq ? cpsw_tx_poll : cpsw_tx_mq_poll,
1656 CPSW_POLL_WEIGHT);
1657
1658
1659 SET_NETDEV_DEV(ndev, dev);
1660 ndev->dev.of_node = cpsw->slaves[0].data->slave_node;
1661 ret = register_netdev(ndev);
1662 if (ret) {
1663 dev_err(dev, "error registering net device\n");
1664 ret = -ENODEV;
1665 goto clean_cpts;
1666 }
1667
1668 if (cpsw->data.dual_emac) {
1669 ret = cpsw_probe_dual_emac(priv);
1670 if (ret) {
1671 cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
1672 goto clean_unregister_netdev_ret;
1673 }
1674 }
1675
1676
1677
1678
1679
1680
1681
1682
1683 ret = devm_request_irq(dev, cpsw->irqs_table[0], cpsw_rx_interrupt,
1684 0, dev_name(dev), cpsw);
1685 if (ret < 0) {
1686 dev_err(dev, "error attaching irq (%d)\n", ret);
1687 goto clean_unregister_netdev_ret;
1688 }
1689
1690
1691 ret = devm_request_irq(dev, cpsw->irqs_table[1], cpsw_tx_interrupt,
1692 0, dev_name(&pdev->dev), cpsw);
1693 if (ret < 0) {
1694 dev_err(dev, "error attaching irq (%d)\n", ret);
1695 goto clean_unregister_netdev_ret;
1696 }
1697
1698 if (!cpsw->cpts)
1699 goto skip_cpts;
1700
1701 ret = devm_request_irq(&pdev->dev, cpsw->misc_irq, cpsw_misc_interrupt,
1702 0, dev_name(&pdev->dev), cpsw);
1703 if (ret < 0) {
1704 dev_err(dev, "error attaching misc irq (%d)\n", ret);
1705 goto clean_unregister_netdev_ret;
1706 }
1707
1708
1709 cpts_set_irqpoll(cpsw->cpts, false);
1710
1711skip_cpts:
1712 cpsw_notice(priv, probe,
1713 "initialized device (regs %pa, irq %d, pool size %d)\n",
1714 &ss_res->start, cpsw->irqs_table[0], descs_pool_size);
1715
1716 pm_runtime_put(&pdev->dev);
1717
1718 return 0;
1719
1720clean_unregister_netdev_ret:
1721 unregister_netdev(ndev);
1722clean_cpts:
1723 cpts_release(cpsw->cpts);
1724 cpdma_ctlr_destroy(cpsw->dma);
1725clean_dt_ret:
1726 cpsw_remove_dt(pdev);
1727 pm_runtime_put_sync(&pdev->dev);
1728clean_runtime_disable_ret:
1729 pm_runtime_disable(&pdev->dev);
1730 return ret;
1731}
1732
1733static int cpsw_remove(struct platform_device *pdev)
1734{
1735 struct cpsw_common *cpsw = platform_get_drvdata(pdev);
1736 int i, ret;
1737
1738 ret = pm_runtime_get_sync(&pdev->dev);
1739 if (ret < 0) {
1740 pm_runtime_put_noidle(&pdev->dev);
1741 return ret;
1742 }
1743
1744 for (i = 0; i < cpsw->data.slaves; i++)
1745 if (cpsw->slaves[i].ndev)
1746 unregister_netdev(cpsw->slaves[i].ndev);
1747
1748 cpts_release(cpsw->cpts);
1749 cpdma_ctlr_destroy(cpsw->dma);
1750 cpsw_remove_dt(pdev);
1751 pm_runtime_put_sync(&pdev->dev);
1752 pm_runtime_disable(&pdev->dev);
1753 return 0;
1754}
1755
1756#ifdef CONFIG_PM_SLEEP
1757static int cpsw_suspend(struct device *dev)
1758{
1759 struct cpsw_common *cpsw = dev_get_drvdata(dev);
1760 int i;
1761
1762 rtnl_lock();
1763
1764 for (i = 0; i < cpsw->data.slaves; i++)
1765 if (cpsw->slaves[i].ndev)
1766 if (netif_running(cpsw->slaves[i].ndev))
1767 cpsw_ndo_stop(cpsw->slaves[i].ndev);
1768
1769 rtnl_unlock();
1770
1771
1772 pinctrl_pm_select_sleep_state(dev);
1773
1774 return 0;
1775}
1776
1777static int cpsw_resume(struct device *dev)
1778{
1779 struct cpsw_common *cpsw = dev_get_drvdata(dev);
1780 int i;
1781
1782
1783 pinctrl_pm_select_default_state(dev);
1784
1785
1786 rtnl_lock();
1787
1788 for (i = 0; i < cpsw->data.slaves; i++)
1789 if (cpsw->slaves[i].ndev)
1790 if (netif_running(cpsw->slaves[i].ndev))
1791 cpsw_ndo_open(cpsw->slaves[i].ndev);
1792
1793 rtnl_unlock();
1794
1795 return 0;
1796}
1797#endif
1798
1799static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);
1800
1801static struct platform_driver cpsw_driver = {
1802 .driver = {
1803 .name = "cpsw",
1804 .pm = &cpsw_pm_ops,
1805 .of_match_table = cpsw_of_mtable,
1806 },
1807 .probe = cpsw_probe,
1808 .remove = cpsw_remove,
1809};
1810
1811module_platform_driver(cpsw_driver);
1812
1813MODULE_LICENSE("GPL");
1814MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>");
1815MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>");
1816MODULE_DESCRIPTION("TI CPSW Ethernet driver");
1817
