1 // SPDX-License-Identifier: GPL-2.0
3 * Texas Instruments Ethernet Switch Driver
5 * Copyright (C) 2019 Texas Instruments
10 #include <linux/timer.h>
11 #include <linux/module.h>
12 #include <linux/irqreturn.h>
13 #include <linux/interrupt.h>
14 #include <linux/if_ether.h>
15 #include <linux/etherdevice.h>
16 #include <linux/net_tstamp.h>
17 #include <linux/phy.h>
18 #include <linux/phy/phy.h>
19 #include <linux/delay.h>
20 #include <linux/pm_runtime.h>
21 #include <linux/gpio/consumer.h>
23 #include <linux/of_mdio.h>
24 #include <linux/of_net.h>
25 #include <linux/of_device.h>
26 #include <linux/if_vlan.h>
27 #include <linux/kmemleak.h>
28 #include <linux/sys_soc.h>
30 #include <net/page_pool.h>
31 #include <net/pkt_cls.h>
32 #include <net/devlink.h>
36 #include "cpsw_priv.h"
38 #include "cpsw_switchdev.h"
40 #include "davinci_cpdma.h"
42 #include <net/pkt_sched.h>
44 static int debug_level;
45 static int ale_ageout = CPSW_ALE_AGEOUT_DEFAULT;
46 static int rx_packet_max = CPSW_MAX_PACKET_SIZE;
47 static int descs_pool_size = CPSW_CPDMA_DESCS_POOL_SIZE_DEFAULT;
50 struct cpsw_common *cpsw;
53 enum cpsw_devlink_param_id {
54 CPSW_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
55 CPSW_DL_PARAM_SWITCH_MODE,
56 CPSW_DL_PARAM_ALE_BYPASS,
59 /* struct cpsw_common is not needed, kept here for compatibility
60 * reasons witrh the old driver
62 static int cpsw_slave_index_priv(struct cpsw_common *cpsw,
63 struct cpsw_priv *priv)
65 if (priv->emac_port == HOST_PORT_NUM)
68 return priv->emac_port - 1;
71 static bool cpsw_is_switch_en(struct cpsw_common *cpsw)
73 return !cpsw->data.dual_emac;
76 static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
78 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
79 bool enable_uni = false;
82 if (cpsw_is_switch_en(cpsw))
85 /* Enabling promiscuous mode for one interface will be
86 * common for both the interface as the interface shares
87 * the same hardware resource.
89 for (i = 0; i < cpsw->data.slaves; i++)
90 if (cpsw->slaves[i].ndev &&
91 (cpsw->slaves[i].ndev->flags & IFF_PROMISC))
94 if (!enable && enable_uni) {
96 dev_dbg(cpsw->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
100 /* Enable unknown unicast, reg/unreg mcast */
101 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
102 ALE_P0_UNI_FLOOD, 1);
104 dev_dbg(cpsw->dev, "promiscuity enabled\n");
106 /* Disable unknown unicast */
107 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
108 ALE_P0_UNI_FLOOD, 0);
109 dev_dbg(cpsw->dev, "promiscuity disabled\n");
114 * cpsw_set_mc - adds multicast entry to the table if it's not added or deletes
115 * if it's not deleted
116 * @ndev: device to sync
117 * @addr: address to be added or deleted
118 * @vid: vlan id, if vid < 0 set/unset address for real device
119 * @add: add address if the flag is set or remove otherwise
121 static int cpsw_set_mc(struct net_device *ndev, const u8 *addr,
124 struct cpsw_priv *priv = netdev_priv(ndev);
125 struct cpsw_common *cpsw = priv->cpsw;
126 int mask, flags, ret, slave_no;
128 slave_no = cpsw_slave_index(cpsw, priv);
130 vid = cpsw->slaves[slave_no].port_vlan;
132 mask = ALE_PORT_HOST;
133 flags = vid ? ALE_VLAN : 0;
136 ret = cpsw_ale_add_mcast(cpsw->ale, addr, mask, flags, vid, 0);
138 ret = cpsw_ale_del_mcast(cpsw->ale, addr, 0, flags, vid);
143 static int cpsw_update_vlan_mc(struct net_device *vdev, int vid, void *ctx)
145 struct addr_sync_ctx *sync_ctx = ctx;
146 struct netdev_hw_addr *ha;
147 int found = 0, ret = 0;
149 if (!vdev || !(vdev->flags & IFF_UP))
152 /* vlan address is relevant if its sync_cnt != 0 */
153 netdev_for_each_mc_addr(ha, vdev) {
154 if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
155 found = ha->sync_cnt;
161 sync_ctx->consumed++;
163 if (sync_ctx->flush) {
165 cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
170 ret = cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 1);
175 static int cpsw_add_mc_addr(struct net_device *ndev, const u8 *addr, int num)
177 struct addr_sync_ctx sync_ctx;
180 sync_ctx.consumed = 0;
181 sync_ctx.addr = addr;
182 sync_ctx.ndev = ndev;
185 ret = vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
186 if (sync_ctx.consumed < num && !ret)
187 ret = cpsw_set_mc(ndev, addr, -1, 1);
192 static int cpsw_del_mc_addr(struct net_device *ndev, const u8 *addr, int num)
194 struct addr_sync_ctx sync_ctx;
196 sync_ctx.consumed = 0;
197 sync_ctx.addr = addr;
198 sync_ctx.ndev = ndev;
201 vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
202 if (sync_ctx.consumed == num)
203 cpsw_set_mc(ndev, addr, -1, 0);
208 static int cpsw_purge_vlan_mc(struct net_device *vdev, int vid, void *ctx)
210 struct addr_sync_ctx *sync_ctx = ctx;
211 struct netdev_hw_addr *ha;
214 if (!vdev || !(vdev->flags & IFF_UP))
217 /* vlan address is relevant if its sync_cnt != 0 */
218 netdev_for_each_mc_addr(ha, vdev) {
219 if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
220 found = ha->sync_cnt;
228 sync_ctx->consumed++;
229 cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
233 static int cpsw_purge_all_mc(struct net_device *ndev, const u8 *addr, int num)
235 struct addr_sync_ctx sync_ctx;
237 sync_ctx.addr = addr;
238 sync_ctx.ndev = ndev;
239 sync_ctx.consumed = 0;
241 vlan_for_each(ndev, cpsw_purge_vlan_mc, &sync_ctx);
242 if (sync_ctx.consumed < num)
243 cpsw_set_mc(ndev, addr, -1, 0);
248 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
250 struct cpsw_priv *priv = netdev_priv(ndev);
251 struct cpsw_common *cpsw = priv->cpsw;
253 if (ndev->flags & IFF_PROMISC) {
254 /* Enable promiscuous mode */
255 cpsw_set_promiscious(ndev, true);
256 cpsw_ale_set_allmulti(cpsw->ale, IFF_ALLMULTI, priv->emac_port);
260 /* Disable promiscuous mode */
261 cpsw_set_promiscious(ndev, false);
263 /* Restore allmulti on vlans if necessary */
264 cpsw_ale_set_allmulti(cpsw->ale,
265 ndev->flags & IFF_ALLMULTI, priv->emac_port);
267 /* add/remove mcast address either for real netdev or for vlan */
268 __hw_addr_ref_sync_dev(&ndev->mc, ndev, cpsw_add_mc_addr,
272 static unsigned int cpsw_rxbuf_total_len(unsigned int len)
274 len += CPSW_HEADROOM;
275 len += SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
277 return SKB_DATA_ALIGN(len);
280 static void cpsw_rx_handler(void *token, int len, int status)
282 struct page *new_page, *page = token;
283 void *pa = page_address(page);
284 int headroom = CPSW_HEADROOM;
285 struct cpsw_meta_xdp *xmeta;
286 struct cpsw_common *cpsw;
287 struct net_device *ndev;
288 int port, ch, pkt_size;
289 struct cpsw_priv *priv;
290 struct page_pool *pool;
296 xmeta = pa + CPSW_XMETA_OFFSET;
297 cpsw = ndev_to_cpsw(xmeta->ndev);
299 pkt_size = cpsw->rx_packet_max;
303 port = CPDMA_RX_SOURCE_PORT(status);
305 ndev = cpsw->slaves[--port].ndev;
308 priv = netdev_priv(ndev);
309 pool = cpsw->page_pool[ch];
311 if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
312 /* In dual emac mode check for all interfaces */
313 if (cpsw->usage_count && status >= 0) {
314 /* The packet received is for the interface which
315 * is already down and the other interface is up
316 * and running, instead of freeing which results
317 * in reducing of the number of rx descriptor in
318 * DMA engine, requeue page back to cpdma.
324 /* the interface is going down, pages are purged */
325 page_pool_recycle_direct(pool, page);
329 new_page = page_pool_dev_alloc_pages(pool);
330 if (unlikely(!new_page)) {
332 ndev->stats.rx_dropped++;
336 if (priv->xdp_prog) {
337 if (status & CPDMA_RX_VLAN_ENCAP) {
338 xdp.data = pa + CPSW_HEADROOM +
339 CPSW_RX_VLAN_ENCAP_HDR_SIZE;
340 xdp.data_end = xdp.data + len -
341 CPSW_RX_VLAN_ENCAP_HDR_SIZE;
343 xdp.data = pa + CPSW_HEADROOM;
344 xdp.data_end = xdp.data + len;
347 xdp_set_data_meta_invalid(&xdp);
349 xdp.data_hard_start = pa;
350 xdp.rxq = &priv->xdp_rxq[ch];
351 xdp.frame_sz = PAGE_SIZE;
353 ret = cpsw_run_xdp(priv, ch, &xdp, page, priv->emac_port);
354 if (ret != CPSW_XDP_PASS)
357 /* XDP prog might have changed packet data and boundaries */
358 len = xdp.data_end - xdp.data;
359 headroom = xdp.data - xdp.data_hard_start;
361 /* XDP prog can modify vlan tag, so can't use encap header */
362 status &= ~CPDMA_RX_VLAN_ENCAP;
365 /* pass skb to netstack if no XDP prog or returned XDP_PASS */
366 skb = build_skb(pa, cpsw_rxbuf_total_len(pkt_size));
368 ndev->stats.rx_dropped++;
369 page_pool_recycle_direct(pool, page);
373 skb->offload_fwd_mark = priv->offload_fwd_mark;
374 skb_reserve(skb, headroom);
377 if (status & CPDMA_RX_VLAN_ENCAP)
378 cpsw_rx_vlan_encap(skb);
379 if (priv->rx_ts_enabled)
380 cpts_rx_timestamp(cpsw->cpts, skb);
381 skb->protocol = eth_type_trans(skb, ndev);
383 /* unmap page as no netstack skb page recycling */
384 page_pool_release_page(pool, page);
385 netif_receive_skb(skb);
387 ndev->stats.rx_bytes += len;
388 ndev->stats.rx_packets++;
391 xmeta = page_address(new_page) + CPSW_XMETA_OFFSET;
395 dma = page_pool_get_dma_addr(new_page) + CPSW_HEADROOM;
396 ret = cpdma_chan_submit_mapped(cpsw->rxv[ch].ch, new_page, dma,
399 WARN_ON(ret == -ENOMEM);
400 page_pool_recycle_direct(pool, new_page);
404 static int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
407 struct cpsw_common *cpsw = priv->cpsw;
408 int unreg_mcast_mask = 0;
413 port_mask = (1 << priv->emac_port) | ALE_PORT_HOST;
415 mcast_mask = ALE_PORT_HOST;
416 if (priv->ndev->flags & IFF_ALLMULTI)
417 unreg_mcast_mask = mcast_mask;
419 ret = cpsw_ale_add_vlan(cpsw->ale, vid, port_mask, 0, port_mask,
424 ret = cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
425 HOST_PORT_NUM, ALE_VLAN, vid);
429 ret = cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
430 mcast_mask, ALE_VLAN, vid, 0);
432 goto clean_vlan_ucast;
436 cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
437 HOST_PORT_NUM, ALE_VLAN, vid);
439 cpsw_ale_del_vlan(cpsw->ale, vid, 0);
443 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
444 __be16 proto, u16 vid)
446 struct cpsw_priv *priv = netdev_priv(ndev);
447 struct cpsw_common *cpsw = priv->cpsw;
450 if (cpsw_is_switch_en(cpsw)) {
451 dev_dbg(cpsw->dev, ".ndo_vlan_rx_add_vid called in switch mode\n");
455 if (vid == cpsw->data.default_vlan)
458 ret = pm_runtime_get_sync(cpsw->dev);
460 pm_runtime_put_noidle(cpsw->dev);
464 /* In dual EMAC, reserved VLAN id should not be used for
465 * creating VLAN interfaces as this can break the dual
466 * EMAC port separation
468 for (i = 0; i < cpsw->data.slaves; i++) {
469 if (cpsw->slaves[i].ndev &&
470 vid == cpsw->slaves[i].port_vlan) {
476 dev_dbg(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
477 ret = cpsw_add_vlan_ale_entry(priv, vid);
479 pm_runtime_put(cpsw->dev);
483 static int cpsw_restore_vlans(struct net_device *vdev, int vid, void *arg)
485 struct cpsw_priv *priv = arg;
490 cpsw_ndo_vlan_rx_add_vid(priv->ndev, 0, vid);
494 /* restore resources after port reset */
495 static void cpsw_restore(struct cpsw_priv *priv)
497 struct cpsw_common *cpsw = priv->cpsw;
499 /* restore vlan configurations */
500 vlan_for_each(priv->ndev, cpsw_restore_vlans, priv);
502 /* restore MQPRIO offload */
503 cpsw_mqprio_resume(&cpsw->slaves[priv->emac_port - 1], priv);
505 /* restore CBS offload */
506 cpsw_cbs_resume(&cpsw->slaves[priv->emac_port - 1], priv);
509 static void cpsw_init_stp_ale_entry(struct cpsw_common *cpsw)
511 char stpa[] = {0x01, 0x80, 0xc2, 0x0, 0x0, 0x0};
513 cpsw_ale_add_mcast(cpsw->ale, stpa,
514 ALE_PORT_HOST, ALE_SUPER, 0,
515 ALE_MCAST_BLOCK_LEARN_FWD);
518 static void cpsw_init_host_port_switch(struct cpsw_common *cpsw)
520 int vlan = cpsw->data.default_vlan;
522 writel(CPSW_FIFO_NORMAL_MODE, &cpsw->host_port_regs->tx_in_ctl);
524 writel(vlan, &cpsw->host_port_regs->port_vlan);
526 cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS,
527 ALE_ALL_PORTS, ALE_ALL_PORTS,
528 ALE_PORT_1 | ALE_PORT_2);
530 cpsw_init_stp_ale_entry(cpsw);
532 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_P0_UNI_FLOOD, 1);
533 dev_dbg(cpsw->dev, "Set P0_UNI_FLOOD\n");
534 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_PORT_NOLEARN, 0);
537 static void cpsw_init_host_port_dual_mac(struct cpsw_common *cpsw)
539 int vlan = cpsw->data.default_vlan;
541 writel(CPSW_FIFO_DUAL_MAC_MODE, &cpsw->host_port_regs->tx_in_ctl);
543 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_P0_UNI_FLOOD, 0);
544 dev_dbg(cpsw->dev, "unset P0_UNI_FLOOD\n");
546 writel(vlan, &cpsw->host_port_regs->port_vlan);
548 cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0);
549 /* learning make no sense in dual_mac mode */
550 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_PORT_NOLEARN, 1);
553 static void cpsw_init_host_port(struct cpsw_priv *priv)
555 struct cpsw_common *cpsw = priv->cpsw;
558 /* soft reset the controller and initialize ale */
559 soft_reset("cpsw", &cpsw->regs->soft_reset);
560 cpsw_ale_start(cpsw->ale);
562 /* switch to vlan unaware mode */
563 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_VLAN_AWARE,
564 CPSW_ALE_VLAN_AWARE);
565 control_reg = readl(&cpsw->regs->control);
566 control_reg |= CPSW_VLAN_AWARE | CPSW_RX_VLAN_ENCAP;
567 writel(control_reg, &cpsw->regs->control);
569 /* setup host port priority mapping */
570 writel_relaxed(CPDMA_TX_PRIORITY_MAP,
571 &cpsw->host_port_regs->cpdma_tx_pri_map);
572 writel_relaxed(0, &cpsw->host_port_regs->cpdma_rx_chan_map);
574 /* disable priority elevation */
575 writel_relaxed(0, &cpsw->regs->ptype);
577 /* enable statistics collection only on all ports */
578 writel_relaxed(0x7, &cpsw->regs->stat_port_en);
580 /* Enable internal fifo flow control */
581 writel(0x7, &cpsw->regs->flow_control);
583 if (cpsw_is_switch_en(cpsw))
584 cpsw_init_host_port_switch(cpsw);
586 cpsw_init_host_port_dual_mac(cpsw);
588 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
589 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
592 static void cpsw_port_add_dual_emac_def_ale_entries(struct cpsw_priv *priv,
593 struct cpsw_slave *slave)
595 u32 port_mask = 1 << priv->emac_port | ALE_PORT_HOST;
596 struct cpsw_common *cpsw = priv->cpsw;
599 reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
601 slave_write(slave, slave->port_vlan, reg);
603 cpsw_ale_add_vlan(cpsw->ale, slave->port_vlan, port_mask,
604 port_mask, port_mask, 0);
605 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
606 ALE_PORT_HOST, ALE_VLAN, slave->port_vlan,
608 cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
609 HOST_PORT_NUM, ALE_VLAN |
610 ALE_SECURE, slave->port_vlan);
611 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
612 ALE_PORT_DROP_UNKNOWN_VLAN, 1);
613 /* learning make no sense in dual_mac mode */
614 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
615 ALE_PORT_NOLEARN, 1);
618 static void cpsw_port_add_switch_def_ale_entries(struct cpsw_priv *priv,
619 struct cpsw_slave *slave)
621 u32 port_mask = 1 << priv->emac_port | ALE_PORT_HOST;
622 struct cpsw_common *cpsw = priv->cpsw;
625 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
626 ALE_PORT_DROP_UNKNOWN_VLAN, 0);
627 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
628 ALE_PORT_NOLEARN, 0);
629 /* disabling SA_UPDATE required to make stp work, without this setting
630 * Host MAC addresses will jump between ports.
631 * As per TRM MAC address can be defined as unicast supervisory (super)
632 * by setting both (ALE_BLOCKED | ALE_SECURE) which should prevent
633 * SA_UPDATE, but HW seems works incorrectly and setting ALE_SECURE
634 * causes STP packets to be dropped due to ingress filter
635 * if (source address found) and (secure) and
636 * (receive port number != port_number))
637 * then discard the packet
639 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
640 ALE_PORT_NO_SA_UPDATE, 1);
642 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
643 port_mask, ALE_VLAN, slave->port_vlan,
645 cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
646 HOST_PORT_NUM, ALE_VLAN, slave->port_vlan);
648 reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
650 slave_write(slave, slave->port_vlan, reg);
653 static void cpsw_adjust_link(struct net_device *ndev)
655 struct cpsw_priv *priv = netdev_priv(ndev);
656 struct cpsw_common *cpsw = priv->cpsw;
657 struct cpsw_slave *slave;
658 struct phy_device *phy;
661 slave = &cpsw->slaves[priv->emac_port - 1];
668 mac_control = CPSW_SL_CTL_GMII_EN;
670 if (phy->speed == 1000)
671 mac_control |= CPSW_SL_CTL_GIG;
673 mac_control |= CPSW_SL_CTL_FULLDUPLEX;
675 /* set speed_in input in case RMII mode is used in 100Mbps */
676 if (phy->speed == 100)
677 mac_control |= CPSW_SL_CTL_IFCTL_A;
678 /* in band mode only works in 10Mbps RGMII mode */
679 else if ((phy->speed == 10) && phy_interface_is_rgmii(phy))
680 mac_control |= CPSW_SL_CTL_EXT_EN; /* In Band mode */
683 mac_control |= CPSW_SL_CTL_RX_FLOW_EN;
686 mac_control |= CPSW_SL_CTL_TX_FLOW_EN;
688 if (mac_control != slave->mac_control)
689 cpsw_sl_ctl_set(slave->mac_sl, mac_control);
691 /* enable forwarding */
692 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
693 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
695 netif_tx_wake_all_queues(ndev);
697 if (priv->shp_cfg_speed &&
698 priv->shp_cfg_speed != slave->phy->speed &&
699 !cpsw_shp_is_off(priv))
700 dev_warn(priv->dev, "Speed was changed, CBS shaper speeds are changed!");
702 netif_tx_stop_all_queues(ndev);
705 /* disable forwarding */
706 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
707 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
709 cpsw_sl_wait_for_idle(slave->mac_sl, 100);
711 cpsw_sl_ctl_reset(slave->mac_sl);
714 if (mac_control != slave->mac_control)
715 phy_print_status(phy);
717 slave->mac_control = mac_control;
719 if (phy->link && cpsw_need_resplit(cpsw))
720 cpsw_split_res(cpsw);
723 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
725 struct cpsw_common *cpsw = priv->cpsw;
726 struct phy_device *phy;
728 cpsw_sl_reset(slave->mac_sl, 100);
729 cpsw_sl_ctl_reset(slave->mac_sl);
731 /* setup priority mapping */
732 cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_PRI_MAP,
733 RX_PRIORITY_MAPPING);
735 switch (cpsw->version) {
737 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
738 /* Increase RX FIFO size to 5 for supporting fullduplex
742 (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
743 CPSW_MAX_BLKS_RX, CPSW1_MAX_BLKS);
748 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
749 /* Increase RX FIFO size to 5 for supporting fullduplex
753 (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
754 CPSW_MAX_BLKS_RX, CPSW2_MAX_BLKS);
758 /* setup max packet size, and mac address */
759 cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_MAXLEN,
760 cpsw->rx_packet_max);
761 cpsw_set_slave_mac(slave, priv);
763 slave->mac_control = 0; /* no link yet */
765 if (cpsw_is_switch_en(cpsw))
766 cpsw_port_add_switch_def_ale_entries(priv, slave);
768 cpsw_port_add_dual_emac_def_ale_entries(priv, slave);
770 if (!slave->data->phy_node)
771 dev_err(priv->dev, "no phy found on slave %d\n",
773 phy = of_phy_connect(priv->ndev, slave->data->phy_node,
774 &cpsw_adjust_link, 0, slave->data->phy_if);
776 dev_err(priv->dev, "phy \"%pOF\" not found on slave %d\n",
777 slave->data->phy_node,
783 phy_attached_info(slave->phy);
785 phy_start(slave->phy);
787 /* Configure GMII_SEL register */
788 phy_set_mode_ext(slave->data->ifphy, PHY_MODE_ETHERNET,
789 slave->data->phy_if);
792 static int cpsw_ndo_stop(struct net_device *ndev)
794 struct cpsw_priv *priv = netdev_priv(ndev);
795 struct cpsw_common *cpsw = priv->cpsw;
796 struct cpsw_slave *slave;
798 cpsw_info(priv, ifdown, "shutting down ndev\n");
799 slave = &cpsw->slaves[priv->emac_port - 1];
801 phy_stop(slave->phy);
803 netif_tx_stop_all_queues(priv->ndev);
806 phy_disconnect(slave->phy);
810 __hw_addr_ref_unsync_dev(&ndev->mc, ndev, cpsw_purge_all_mc);
812 if (cpsw->usage_count <= 1) {
813 napi_disable(&cpsw->napi_rx);
814 napi_disable(&cpsw->napi_tx);
815 cpts_unregister(cpsw->cpts);
816 cpsw_intr_disable(cpsw);
817 cpdma_ctlr_stop(cpsw->dma);
818 cpsw_ale_stop(cpsw->ale);
819 cpsw_destroy_xdp_rxqs(cpsw);
822 if (cpsw_need_resplit(cpsw))
823 cpsw_split_res(cpsw);
826 pm_runtime_put_sync(cpsw->dev);
830 static int cpsw_ndo_open(struct net_device *ndev)
832 struct cpsw_priv *priv = netdev_priv(ndev);
833 struct cpsw_common *cpsw = priv->cpsw;
836 dev_info(priv->dev, "starting ndev. mode: %s\n",
837 cpsw_is_switch_en(cpsw) ? "switch" : "dual_mac");
838 ret = pm_runtime_get_sync(cpsw->dev);
840 pm_runtime_put_noidle(cpsw->dev);
844 /* Notify the stack of the actual queue counts. */
845 ret = netif_set_real_num_tx_queues(ndev, cpsw->tx_ch_num);
847 dev_err(priv->dev, "cannot set real number of tx queues\n");
851 ret = netif_set_real_num_rx_queues(ndev, cpsw->rx_ch_num);
853 dev_err(priv->dev, "cannot set real number of rx queues\n");
857 /* Initialize host and slave ports */
858 if (!cpsw->usage_count)
859 cpsw_init_host_port(priv);
860 cpsw_slave_open(&cpsw->slaves[priv->emac_port - 1], priv);
862 /* initialize shared resources for every ndev */
863 if (!cpsw->usage_count) {
864 /* create rxqs for both infs in dual mac as they use same pool
865 * and must be destroyed together when no users.
867 ret = cpsw_create_xdp_rxqs(cpsw);
871 ret = cpsw_fill_rx_channels(priv);
875 if (cpts_register(cpsw->cpts))
876 dev_err(priv->dev, "error registering cpts device\n");
878 napi_enable(&cpsw->napi_rx);
879 napi_enable(&cpsw->napi_tx);
881 if (cpsw->tx_irq_disabled) {
882 cpsw->tx_irq_disabled = false;
883 enable_irq(cpsw->irqs_table[1]);
886 if (cpsw->rx_irq_disabled) {
887 cpsw->rx_irq_disabled = false;
888 enable_irq(cpsw->irqs_table[0]);
894 /* Enable Interrupt pacing if configured */
895 if (cpsw->coal_intvl != 0) {
896 struct ethtool_coalesce coal;
898 coal.rx_coalesce_usecs = cpsw->coal_intvl;
899 cpsw_set_coalesce(ndev, &coal);
902 cpdma_ctlr_start(cpsw->dma);
903 cpsw_intr_enable(cpsw);
912 pm_runtime_put_sync(cpsw->dev);
916 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
917 struct net_device *ndev)
919 struct cpsw_priv *priv = netdev_priv(ndev);
920 struct cpsw_common *cpsw = priv->cpsw;
921 struct cpts *cpts = cpsw->cpts;
922 struct netdev_queue *txq;
923 struct cpdma_chan *txch;
926 if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
927 cpsw_err(priv, tx_err, "packet pad failed\n");
928 ndev->stats.tx_dropped++;
929 return NET_XMIT_DROP;
932 if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
933 priv->tx_ts_enabled && cpts_can_timestamp(cpts, skb))
934 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
936 q_idx = skb_get_queue_mapping(skb);
937 if (q_idx >= cpsw->tx_ch_num)
938 q_idx = q_idx % cpsw->tx_ch_num;
940 txch = cpsw->txv[q_idx].ch;
941 txq = netdev_get_tx_queue(ndev, q_idx);
942 skb_tx_timestamp(skb);
943 ret = cpdma_chan_submit(txch, skb, skb->data, skb->len,
945 if (unlikely(ret != 0)) {
946 cpsw_err(priv, tx_err, "desc submit failed\n");
950 /* If there is no more tx desc left free then we need to
951 * tell the kernel to stop sending us tx frames.
953 if (unlikely(!cpdma_check_free_tx_desc(txch))) {
954 netif_tx_stop_queue(txq);
956 /* Barrier, so that stop_queue visible to other cpus */
957 smp_mb__after_atomic();
959 if (cpdma_check_free_tx_desc(txch))
960 netif_tx_wake_queue(txq);
965 ndev->stats.tx_dropped++;
966 netif_tx_stop_queue(txq);
968 /* Barrier, so that stop_queue visible to other cpus */
969 smp_mb__after_atomic();
971 if (cpdma_check_free_tx_desc(txch))
972 netif_tx_wake_queue(txq);
974 return NETDEV_TX_BUSY;
977 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
979 struct sockaddr *addr = (struct sockaddr *)p;
980 struct cpsw_priv *priv = netdev_priv(ndev);
981 struct cpsw_common *cpsw = priv->cpsw;
986 slave_no = cpsw_slave_index(cpsw, priv);
987 if (!is_valid_ether_addr(addr->sa_data))
988 return -EADDRNOTAVAIL;
990 ret = pm_runtime_get_sync(cpsw->dev);
992 pm_runtime_put_noidle(cpsw->dev);
996 vid = cpsw->slaves[slave_no].port_vlan;
997 flags = ALE_VLAN | ALE_SECURE;
999 cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
1001 cpsw_ale_add_ucast(cpsw->ale, addr->sa_data, HOST_PORT_NUM,
1004 ether_addr_copy(priv->mac_addr, addr->sa_data);
1005 ether_addr_copy(ndev->dev_addr, priv->mac_addr);
1006 cpsw_set_slave_mac(&cpsw->slaves[slave_no], priv);
1008 pm_runtime_put(cpsw->dev);
1013 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1014 __be16 proto, u16 vid)
1016 struct cpsw_priv *priv = netdev_priv(ndev);
1017 struct cpsw_common *cpsw = priv->cpsw;
1021 if (cpsw_is_switch_en(cpsw)) {
1022 dev_dbg(cpsw->dev, "ndo del vlan is called in switch mode\n");
1026 if (vid == cpsw->data.default_vlan)
1029 ret = pm_runtime_get_sync(cpsw->dev);
1031 pm_runtime_put_noidle(cpsw->dev);
1035 for (i = 0; i < cpsw->data.slaves; i++) {
1036 if (cpsw->slaves[i].ndev &&
1037 vid == cpsw->slaves[i].port_vlan)
1041 dev_dbg(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1042 cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1043 cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1044 HOST_PORT_NUM, ALE_VLAN, vid);
1045 cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
1047 cpsw_ale_flush_multicast(cpsw->ale, 0, vid);
1049 pm_runtime_put(cpsw->dev);
1053 static int cpsw_ndo_get_phys_port_name(struct net_device *ndev, char *name,
1056 struct cpsw_priv *priv = netdev_priv(ndev);
1059 err = snprintf(name, len, "p%d", priv->emac_port);
1067 #ifdef CONFIG_NET_POLL_CONTROLLER
1068 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1070 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1072 cpsw_intr_disable(cpsw);
1073 cpsw_rx_interrupt(cpsw->irqs_table[0], cpsw);
1074 cpsw_tx_interrupt(cpsw->irqs_table[1], cpsw);
1075 cpsw_intr_enable(cpsw);
1079 static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n,
1080 struct xdp_frame **frames, u32 flags)
1082 struct cpsw_priv *priv = netdev_priv(ndev);
1083 struct xdp_frame *xdpf;
1086 if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
1089 for (i = 0; i < n; i++) {
1091 if (xdpf->len < CPSW_MIN_PACKET_SIZE) {
1092 xdp_return_frame_rx_napi(xdpf);
1097 if (cpsw_xdp_tx_frame(priv, xdpf, NULL, priv->emac_port))
1104 static int cpsw_get_port_parent_id(struct net_device *ndev,
1105 struct netdev_phys_item_id *ppid)
1107 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1109 ppid->id_len = sizeof(cpsw->base_mac);
1110 memcpy(&ppid->id, &cpsw->base_mac, ppid->id_len);
1115 static const struct net_device_ops cpsw_netdev_ops = {
1116 .ndo_open = cpsw_ndo_open,
1117 .ndo_stop = cpsw_ndo_stop,
1118 .ndo_start_xmit = cpsw_ndo_start_xmit,
1119 .ndo_set_mac_address = cpsw_ndo_set_mac_address,
1120 .ndo_do_ioctl = cpsw_ndo_ioctl,
1121 .ndo_validate_addr = eth_validate_addr,
1122 .ndo_tx_timeout = cpsw_ndo_tx_timeout,
1123 .ndo_set_rx_mode = cpsw_ndo_set_rx_mode,
1124 .ndo_set_tx_maxrate = cpsw_ndo_set_tx_maxrate,
1125 #ifdef CONFIG_NET_POLL_CONTROLLER
1126 .ndo_poll_controller = cpsw_ndo_poll_controller,
1128 .ndo_vlan_rx_add_vid = cpsw_ndo_vlan_rx_add_vid,
1129 .ndo_vlan_rx_kill_vid = cpsw_ndo_vlan_rx_kill_vid,
1130 .ndo_setup_tc = cpsw_ndo_setup_tc,
1131 .ndo_get_phys_port_name = cpsw_ndo_get_phys_port_name,
1132 .ndo_bpf = cpsw_ndo_bpf,
1133 .ndo_xdp_xmit = cpsw_ndo_xdp_xmit,
1134 .ndo_get_port_parent_id = cpsw_get_port_parent_id,
1137 static void cpsw_get_drvinfo(struct net_device *ndev,
1138 struct ethtool_drvinfo *info)
1140 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1141 struct platform_device *pdev;
1143 pdev = to_platform_device(cpsw->dev);
1144 strlcpy(info->driver, "cpsw-switch", sizeof(info->driver));
1145 strlcpy(info->version, "2.0", sizeof(info->version));
1146 strlcpy(info->bus_info, pdev->name, sizeof(info->bus_info));
1149 static int cpsw_set_pauseparam(struct net_device *ndev,
1150 struct ethtool_pauseparam *pause)
1152 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1153 struct cpsw_priv *priv = netdev_priv(ndev);
1156 slave_no = cpsw_slave_index(cpsw, priv);
1157 if (!cpsw->slaves[slave_no].phy)
1160 if (!phy_validate_pause(cpsw->slaves[slave_no].phy, pause))
1163 priv->rx_pause = pause->rx_pause ? true : false;
1164 priv->tx_pause = pause->tx_pause ? true : false;
1166 phy_set_asym_pause(cpsw->slaves[slave_no].phy,
1167 priv->rx_pause, priv->tx_pause);
1172 static int cpsw_set_channels(struct net_device *ndev,
1173 struct ethtool_channels *chs)
1175 return cpsw_set_channels_common(ndev, chs, cpsw_rx_handler);
1178 static const struct ethtool_ops cpsw_ethtool_ops = {
1179 .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
1180 .get_drvinfo = cpsw_get_drvinfo,
1181 .get_msglevel = cpsw_get_msglevel,
1182 .set_msglevel = cpsw_set_msglevel,
1183 .get_link = ethtool_op_get_link,
1184 .get_ts_info = cpsw_get_ts_info,
1185 .get_coalesce = cpsw_get_coalesce,
1186 .set_coalesce = cpsw_set_coalesce,
1187 .get_sset_count = cpsw_get_sset_count,
1188 .get_strings = cpsw_get_strings,
1189 .get_ethtool_stats = cpsw_get_ethtool_stats,
1190 .get_pauseparam = cpsw_get_pauseparam,
1191 .set_pauseparam = cpsw_set_pauseparam,
1192 .get_wol = cpsw_get_wol,
1193 .set_wol = cpsw_set_wol,
1194 .get_regs_len = cpsw_get_regs_len,
1195 .get_regs = cpsw_get_regs,
1196 .begin = cpsw_ethtool_op_begin,
1197 .complete = cpsw_ethtool_op_complete,
1198 .get_channels = cpsw_get_channels,
1199 .set_channels = cpsw_set_channels,
1200 .get_link_ksettings = cpsw_get_link_ksettings,
1201 .set_link_ksettings = cpsw_set_link_ksettings,
1202 .get_eee = cpsw_get_eee,
1203 .set_eee = cpsw_set_eee,
1204 .nway_reset = cpsw_nway_reset,
1205 .get_ringparam = cpsw_get_ringparam,
1206 .set_ringparam = cpsw_set_ringparam,
1209 static int cpsw_probe_dt(struct cpsw_common *cpsw)
1211 struct device_node *node = cpsw->dev->of_node, *tmp_node, *port_np;
1212 struct cpsw_platform_data *data = &cpsw->data;
1213 struct device *dev = cpsw->dev;
1220 tmp_node = of_get_child_by_name(node, "ethernet-ports");
1223 data->slaves = of_get_child_count(tmp_node);
1224 if (data->slaves != CPSW_SLAVE_PORTS_NUM) {
1225 of_node_put(tmp_node);
1229 data->active_slave = 0;
1230 data->channels = CPSW_MAX_QUEUES;
1231 data->ale_entries = CPSW_ALE_NUM_ENTRIES;
1232 data->dual_emac = true;
1233 data->bd_ram_size = CPSW_BD_RAM_SIZE;
1234 data->mac_control = 0;
1236 data->slave_data = devm_kcalloc(dev, CPSW_SLAVE_PORTS_NUM,
1237 sizeof(struct cpsw_slave_data),
1239 if (!data->slave_data)
1242 /* Populate all the child nodes here...
1244 ret = devm_of_platform_populate(dev);
1245 /* We do not want to force this, as in some cases may not have child */
1247 dev_warn(dev, "Doesn't have any child node\n");
1249 for_each_child_of_node(tmp_node, port_np) {
1250 struct cpsw_slave_data *slave_data;
1251 const void *mac_addr;
1254 ret = of_property_read_u32(port_np, "reg", &port_id);
1256 dev_err(dev, "%pOF error reading port_id %d\n",
1261 if (!port_id || port_id > CPSW_SLAVE_PORTS_NUM) {
1262 dev_err(dev, "%pOF has invalid port_id %u\n",
1268 slave_data = &data->slave_data[port_id - 1];
1270 slave_data->disabled = !of_device_is_available(port_np);
1271 if (slave_data->disabled)
1274 slave_data->slave_node = port_np;
1275 slave_data->ifphy = devm_of_phy_get(dev, port_np, NULL);
1276 if (IS_ERR(slave_data->ifphy)) {
1277 ret = PTR_ERR(slave_data->ifphy);
1278 dev_err(dev, "%pOF: Error retrieving port phy: %d\n",
1283 if (of_phy_is_fixed_link(port_np)) {
1284 ret = of_phy_register_fixed_link(port_np);
1286 if (ret != -EPROBE_DEFER)
1287 dev_err(dev, "%pOF failed to register fixed-link phy: %d\n",
1291 slave_data->phy_node = of_node_get(port_np);
1293 slave_data->phy_node =
1294 of_parse_phandle(port_np, "phy-handle", 0);
1297 if (!slave_data->phy_node) {
1298 dev_err(dev, "%pOF no phy found\n", port_np);
1303 ret = of_get_phy_mode(port_np, &slave_data->phy_if);
1305 dev_err(dev, "%pOF read phy-mode err %d\n",
1310 mac_addr = of_get_mac_address(port_np);
1311 if (!IS_ERR(mac_addr)) {
1312 ether_addr_copy(slave_data->mac_addr, mac_addr);
1314 ret = ti_cm_get_macid(dev, port_id - 1,
1315 slave_data->mac_addr);
1320 if (of_property_read_u32(port_np, "ti,dual-emac-pvid",
1322 dev_err(dev, "%pOF Missing dual_emac_res_vlan in DT.\n",
1324 slave_data->dual_emac_res_vlan = port_id;
1325 dev_err(dev, "%pOF Using %d as Reserved VLAN\n",
1326 port_np, slave_data->dual_emac_res_vlan);
1328 slave_data->dual_emac_res_vlan = prop;
1332 of_node_put(tmp_node);
1336 of_node_put(port_np);
1340 static void cpsw_remove_dt(struct cpsw_common *cpsw)
1342 struct cpsw_platform_data *data = &cpsw->data;
1345 for (i = 0; i < cpsw->data.slaves; i++) {
1346 struct cpsw_slave_data *slave_data = &data->slave_data[i];
1347 struct device_node *port_np = slave_data->phy_node;
1350 if (of_phy_is_fixed_link(port_np))
1351 of_phy_deregister_fixed_link(port_np);
1353 of_node_put(port_np);
1358 static int cpsw_create_ports(struct cpsw_common *cpsw)
1360 struct cpsw_platform_data *data = &cpsw->data;
1361 struct net_device *ndev, *napi_ndev = NULL;
1362 struct device *dev = cpsw->dev;
1363 struct cpsw_priv *priv;
1366 for (i = 0; i < cpsw->data.slaves; i++) {
1367 struct cpsw_slave_data *slave_data = &data->slave_data[i];
1369 if (slave_data->disabled)
1372 ndev = devm_alloc_etherdev_mqs(dev, sizeof(struct cpsw_priv),
1376 dev_err(dev, "error allocating net_device\n");
1380 priv = netdev_priv(ndev);
1384 priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1385 priv->emac_port = i + 1;
1387 if (is_valid_ether_addr(slave_data->mac_addr)) {
1388 ether_addr_copy(priv->mac_addr, slave_data->mac_addr);
1389 dev_info(cpsw->dev, "Detected MACID = %pM\n",
1392 eth_random_addr(slave_data->mac_addr);
1393 dev_info(cpsw->dev, "Random MACID = %pM\n",
1396 ether_addr_copy(ndev->dev_addr, slave_data->mac_addr);
1397 ether_addr_copy(priv->mac_addr, slave_data->mac_addr);
1399 cpsw->slaves[i].ndev = ndev;
1401 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER |
1402 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_NETNS_LOCAL;
1404 ndev->netdev_ops = &cpsw_netdev_ops;
1405 ndev->ethtool_ops = &cpsw_ethtool_ops;
1406 SET_NETDEV_DEV(ndev, dev);
1409 /* CPSW Host port CPDMA interface is shared between
1410 * ports and there is only one TX and one RX IRQs
1411 * available for all possible TX and RX channels
1414 netif_napi_add(ndev, &cpsw->napi_rx,
1416 cpsw_rx_poll : cpsw_rx_mq_poll,
1418 netif_tx_napi_add(ndev, &cpsw->napi_tx,
1420 cpsw_tx_poll : cpsw_tx_mq_poll,
1430 static void cpsw_unregister_ports(struct cpsw_common *cpsw)
1434 for (i = 0; i < cpsw->data.slaves; i++) {
1435 if (!cpsw->slaves[i].ndev)
1438 unregister_netdev(cpsw->slaves[i].ndev);
1442 static int cpsw_register_ports(struct cpsw_common *cpsw)
1446 for (i = 0; i < cpsw->data.slaves; i++) {
1447 if (!cpsw->slaves[i].ndev)
1450 /* register the network device */
1451 ret = register_netdev(cpsw->slaves[i].ndev);
1454 "cpsw: err registering net device%d\n", i);
1455 cpsw->slaves[i].ndev = NULL;
1461 cpsw_unregister_ports(cpsw);
1465 bool cpsw_port_dev_check(const struct net_device *ndev)
1467 if (ndev->netdev_ops == &cpsw_netdev_ops) {
1468 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1470 return !cpsw->data.dual_emac;
1476 static void cpsw_port_offload_fwd_mark_update(struct cpsw_common *cpsw)
1481 if (!cpsw->ale_bypass &&
1482 (cpsw->br_members == (ALE_PORT_1 | ALE_PORT_2)))
1485 dev_dbg(cpsw->dev, "set offload_fwd_mark %d\n", set_val);
1487 for (i = 0; i < cpsw->data.slaves; i++) {
1488 struct net_device *sl_ndev = cpsw->slaves[i].ndev;
1489 struct cpsw_priv *priv = netdev_priv(sl_ndev);
1491 priv->offload_fwd_mark = set_val;
1495 static int cpsw_netdevice_port_link(struct net_device *ndev,
1496 struct net_device *br_ndev)
1498 struct cpsw_priv *priv = netdev_priv(ndev);
1499 struct cpsw_common *cpsw = priv->cpsw;
1501 if (!cpsw->br_members) {
1502 cpsw->hw_bridge_dev = br_ndev;
1504 /* This is adding the port to a second bridge, this is
1507 if (cpsw->hw_bridge_dev != br_ndev)
1511 cpsw->br_members |= BIT(priv->emac_port);
1513 cpsw_port_offload_fwd_mark_update(cpsw);
1518 static void cpsw_netdevice_port_unlink(struct net_device *ndev)
1520 struct cpsw_priv *priv = netdev_priv(ndev);
1521 struct cpsw_common *cpsw = priv->cpsw;
1523 cpsw->br_members &= ~BIT(priv->emac_port);
1525 cpsw_port_offload_fwd_mark_update(cpsw);
1527 if (!cpsw->br_members)
1528 cpsw->hw_bridge_dev = NULL;
1531 /* netdev notifier */
1532 static int cpsw_netdevice_event(struct notifier_block *unused,
1533 unsigned long event, void *ptr)
1535 struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
1536 struct netdev_notifier_changeupper_info *info;
1537 int ret = NOTIFY_DONE;
1539 if (!cpsw_port_dev_check(ndev))
1543 case NETDEV_CHANGEUPPER:
1546 if (netif_is_bridge_master(info->upper_dev)) {
1548 ret = cpsw_netdevice_port_link(ndev,
1551 cpsw_netdevice_port_unlink(ndev);
1558 return notifier_from_errno(ret);
1561 static struct notifier_block cpsw_netdevice_nb __read_mostly = {
1562 .notifier_call = cpsw_netdevice_event,
1565 static int cpsw_register_notifiers(struct cpsw_common *cpsw)
1569 ret = register_netdevice_notifier(&cpsw_netdevice_nb);
1571 dev_err(cpsw->dev, "can't register netdevice notifier\n");
1575 ret = cpsw_switchdev_register_notifiers(cpsw);
1577 unregister_netdevice_notifier(&cpsw_netdevice_nb);
1582 static void cpsw_unregister_notifiers(struct cpsw_common *cpsw)
1584 cpsw_switchdev_unregister_notifiers(cpsw);
1585 unregister_netdevice_notifier(&cpsw_netdevice_nb);
1588 static const struct devlink_ops cpsw_devlink_ops = {
1591 static int cpsw_dl_switch_mode_get(struct devlink *dl, u32 id,
1592 struct devlink_param_gset_ctx *ctx)
1594 struct cpsw_devlink *dl_priv = devlink_priv(dl);
1595 struct cpsw_common *cpsw = dl_priv->cpsw;
1597 dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1599 if (id != CPSW_DL_PARAM_SWITCH_MODE)
1602 ctx->val.vbool = !cpsw->data.dual_emac;
1607 static int cpsw_dl_switch_mode_set(struct devlink *dl, u32 id,
1608 struct devlink_param_gset_ctx *ctx)
1610 struct cpsw_devlink *dl_priv = devlink_priv(dl);
1611 struct cpsw_common *cpsw = dl_priv->cpsw;
1612 int vlan = cpsw->data.default_vlan;
1613 bool switch_en = ctx->val.vbool;
1614 bool if_running = false;
1617 dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1619 if (id != CPSW_DL_PARAM_SWITCH_MODE)
1622 if (switch_en == !cpsw->data.dual_emac)
1625 if (!switch_en && cpsw->br_members) {
1626 dev_err(cpsw->dev, "Remove ports from BR before disabling switch mode\n");
1632 for (i = 0; i < cpsw->data.slaves; i++) {
1633 struct cpsw_slave *slave = &cpsw->slaves[i];
1634 struct net_device *sl_ndev = slave->ndev;
1636 if (!sl_ndev || !netif_running(sl_ndev))
1643 /* all ndevs are down */
1644 cpsw->data.dual_emac = !switch_en;
1645 for (i = 0; i < cpsw->data.slaves; i++) {
1646 struct cpsw_slave *slave = &cpsw->slaves[i];
1647 struct net_device *sl_ndev = slave->ndev;
1648 struct cpsw_priv *priv;
1653 priv = netdev_priv(sl_ndev);
1655 vlan = cpsw->data.default_vlan;
1657 vlan = slave->data->dual_emac_res_vlan;
1658 slave->port_vlan = vlan;
1664 dev_info(cpsw->dev, "Enable switch mode\n");
1666 /* enable bypass - no forwarding; all traffic goes to Host */
1667 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 1);
1669 /* clean up ALE table */
1670 cpsw_ale_control_set(cpsw->ale, 0, ALE_CLEAR, 1);
1671 cpsw_ale_control_get(cpsw->ale, 0, ALE_AGEOUT);
1673 cpsw_init_host_port_switch(cpsw);
1675 for (i = 0; i < cpsw->data.slaves; i++) {
1676 struct cpsw_slave *slave = &cpsw->slaves[i];
1677 struct net_device *sl_ndev = slave->ndev;
1678 struct cpsw_priv *priv;
1683 priv = netdev_priv(sl_ndev);
1684 slave->port_vlan = vlan;
1685 if (netif_running(sl_ndev))
1686 cpsw_port_add_switch_def_ale_entries(priv,
1690 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 0);
1691 cpsw->data.dual_emac = false;
1693 dev_info(cpsw->dev, "Disable switch mode\n");
1695 /* enable bypass - no forwarding; all traffic goes to Host */
1696 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 1);
1698 cpsw_ale_control_set(cpsw->ale, 0, ALE_CLEAR, 1);
1699 cpsw_ale_control_get(cpsw->ale, 0, ALE_AGEOUT);
1701 cpsw_init_host_port_dual_mac(cpsw);
1703 for (i = 0; i < cpsw->data.slaves; i++) {
1704 struct cpsw_slave *slave = &cpsw->slaves[i];
1705 struct net_device *sl_ndev = slave->ndev;
1706 struct cpsw_priv *priv;
1711 priv = netdev_priv(slave->ndev);
1712 slave->port_vlan = slave->data->dual_emac_res_vlan;
1713 cpsw_port_add_dual_emac_def_ale_entries(priv, slave);
1716 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 0);
1717 cpsw->data.dual_emac = true;
1725 static int cpsw_dl_ale_ctrl_get(struct devlink *dl, u32 id,
1726 struct devlink_param_gset_ctx *ctx)
1728 struct cpsw_devlink *dl_priv = devlink_priv(dl);
1729 struct cpsw_common *cpsw = dl_priv->cpsw;
1731 dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1734 case CPSW_DL_PARAM_ALE_BYPASS:
1735 ctx->val.vbool = cpsw_ale_control_get(cpsw->ale, 0, ALE_BYPASS);
1744 static int cpsw_dl_ale_ctrl_set(struct devlink *dl, u32 id,
1745 struct devlink_param_gset_ctx *ctx)
1747 struct cpsw_devlink *dl_priv = devlink_priv(dl);
1748 struct cpsw_common *cpsw = dl_priv->cpsw;
1749 int ret = -EOPNOTSUPP;
1751 dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1754 case CPSW_DL_PARAM_ALE_BYPASS:
1755 ret = cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS,
1758 cpsw->ale_bypass = ctx->val.vbool;
1759 cpsw_port_offload_fwd_mark_update(cpsw);
1769 static const struct devlink_param cpsw_devlink_params[] = {
1770 DEVLINK_PARAM_DRIVER(CPSW_DL_PARAM_SWITCH_MODE,
1771 "switch_mode", DEVLINK_PARAM_TYPE_BOOL,
1772 BIT(DEVLINK_PARAM_CMODE_RUNTIME),
1773 cpsw_dl_switch_mode_get, cpsw_dl_switch_mode_set,
1775 DEVLINK_PARAM_DRIVER(CPSW_DL_PARAM_ALE_BYPASS,
1776 "ale_bypass", DEVLINK_PARAM_TYPE_BOOL,
1777 BIT(DEVLINK_PARAM_CMODE_RUNTIME),
1778 cpsw_dl_ale_ctrl_get, cpsw_dl_ale_ctrl_set, NULL),
1781 static int cpsw_register_devlink(struct cpsw_common *cpsw)
1783 struct device *dev = cpsw->dev;
1784 struct cpsw_devlink *dl_priv;
1787 cpsw->devlink = devlink_alloc(&cpsw_devlink_ops, sizeof(*dl_priv));
1791 dl_priv = devlink_priv(cpsw->devlink);
1792 dl_priv->cpsw = cpsw;
1794 ret = devlink_register(cpsw->devlink, dev);
1796 dev_err(dev, "DL reg fail ret:%d\n", ret);
1800 ret = devlink_params_register(cpsw->devlink, cpsw_devlink_params,
1801 ARRAY_SIZE(cpsw_devlink_params));
1803 dev_err(dev, "DL params reg fail ret:%d\n", ret);
1807 devlink_params_publish(cpsw->devlink);
1811 devlink_unregister(cpsw->devlink);
1813 devlink_free(cpsw->devlink);
1817 static void cpsw_unregister_devlink(struct cpsw_common *cpsw)
1819 devlink_params_unpublish(cpsw->devlink);
1820 devlink_params_unregister(cpsw->devlink, cpsw_devlink_params,
1821 ARRAY_SIZE(cpsw_devlink_params));
1822 devlink_unregister(cpsw->devlink);
1823 devlink_free(cpsw->devlink);
1826 static const struct of_device_id cpsw_of_mtable[] = {
1827 { .compatible = "ti,cpsw-switch"},
1828 { .compatible = "ti,am335x-cpsw-switch"},
1829 { .compatible = "ti,am4372-cpsw-switch"},
1830 { .compatible = "ti,dra7-cpsw-switch"},
1833 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
1835 static const struct soc_device_attribute cpsw_soc_devices[] = {
1836 { .family = "AM33xx", .revision = "ES1.0"},
1840 static int cpsw_probe(struct platform_device *pdev)
1842 const struct soc_device_attribute *soc;
1843 struct device *dev = &pdev->dev;
1844 struct cpsw_common *cpsw;
1845 struct resource *ss_res;
1846 struct gpio_descs *mode;
1847 void __iomem *ss_regs;
1852 cpsw = devm_kzalloc(dev, sizeof(struct cpsw_common), GFP_KERNEL);
1856 cpsw_slave_index = cpsw_slave_index_priv;
1860 cpsw->slaves = devm_kcalloc(dev,
1861 CPSW_SLAVE_PORTS_NUM,
1862 sizeof(struct cpsw_slave),
1867 mode = devm_gpiod_get_array_optional(dev, "mode", GPIOD_OUT_LOW);
1869 ret = PTR_ERR(mode);
1870 dev_err(dev, "gpio request failed, ret %d\n", ret);
1874 clk = devm_clk_get(dev, "fck");
1877 dev_err(dev, "fck is not found %d\n", ret);
1880 cpsw->bus_freq_mhz = clk_get_rate(clk) / 1000000;
1882 ss_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1883 ss_regs = devm_ioremap_resource(dev, ss_res);
1884 if (IS_ERR(ss_regs)) {
1885 ret = PTR_ERR(ss_regs);
1888 cpsw->regs = ss_regs;
1890 irq = platform_get_irq_byname(pdev, "rx");
1893 cpsw->irqs_table[0] = irq;
1895 irq = platform_get_irq_byname(pdev, "tx");
1898 cpsw->irqs_table[1] = irq;
1900 irq = platform_get_irq_byname(pdev, "misc");
1903 cpsw->misc_irq = irq;
1905 platform_set_drvdata(pdev, cpsw);
1906 /* This may be required here for child devices. */
1907 pm_runtime_enable(dev);
1909 /* Need to enable clocks with runtime PM api to access module
1912 ret = pm_runtime_get_sync(dev);
1914 pm_runtime_put_noidle(dev);
1915 pm_runtime_disable(dev);
1919 ret = cpsw_probe_dt(cpsw);
1923 soc = soc_device_match(cpsw_soc_devices);
1925 cpsw->quirk_irq = true;
1927 cpsw->rx_packet_max = rx_packet_max;
1928 cpsw->descs_pool_size = descs_pool_size;
1929 eth_random_addr(cpsw->base_mac);
1931 ret = cpsw_init_common(cpsw, ss_regs, ale_ageout,
1932 (u32 __force)ss_res->start + CPSW2_BD_OFFSET,
1937 cpsw->wr_regs = cpsw->version == CPSW_VERSION_1 ?
1938 ss_regs + CPSW1_WR_OFFSET :
1939 ss_regs + CPSW2_WR_OFFSET;
1941 ch = cpsw->quirk_irq ? 0 : 7;
1942 cpsw->txv[0].ch = cpdma_chan_create(cpsw->dma, ch, cpsw_tx_handler, 0);
1943 if (IS_ERR(cpsw->txv[0].ch)) {
1944 dev_err(dev, "error initializing tx dma channel\n");
1945 ret = PTR_ERR(cpsw->txv[0].ch);
1949 cpsw->rxv[0].ch = cpdma_chan_create(cpsw->dma, 0, cpsw_rx_handler, 1);
1950 if (IS_ERR(cpsw->rxv[0].ch)) {
1951 dev_err(dev, "error initializing rx dma channel\n");
1952 ret = PTR_ERR(cpsw->rxv[0].ch);
1955 cpsw_split_res(cpsw);
1958 ret = cpsw_create_ports(cpsw);
1960 goto clean_unregister_netdev;
1962 /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
1963 * MISC IRQs which are always kept disabled with this driver so
1964 * we will not request them.
1966 * If anyone wants to implement support for those, make sure to
1967 * first request and append them to irqs_table array.
1970 ret = devm_request_irq(dev, cpsw->irqs_table[0], cpsw_rx_interrupt,
1971 0, dev_name(dev), cpsw);
1973 dev_err(dev, "error attaching irq (%d)\n", ret);
1974 goto clean_unregister_netdev;
1977 ret = devm_request_irq(dev, cpsw->irqs_table[1], cpsw_tx_interrupt,
1978 0, dev_name(dev), cpsw);
1980 dev_err(dev, "error attaching irq (%d)\n", ret);
1981 goto clean_unregister_netdev;
1987 ret = devm_request_irq(dev, cpsw->misc_irq, cpsw_misc_interrupt,
1988 0, dev_name(&pdev->dev), cpsw);
1990 dev_err(dev, "error attaching misc irq (%d)\n", ret);
1991 goto clean_unregister_netdev;
1994 /* Enable misc CPTS evnt_pend IRQ */
1995 cpts_set_irqpoll(cpsw->cpts, false);
1996 writel(0x10, &cpsw->wr_regs->misc_en);
1999 ret = cpsw_register_notifiers(cpsw);
2001 goto clean_unregister_netdev;
2003 ret = cpsw_register_devlink(cpsw);
2005 goto clean_unregister_notifiers;
2007 ret = cpsw_register_ports(cpsw);
2009 goto clean_unregister_notifiers;
2011 dev_notice(dev, "initialized (regs %pa, pool size %d) hw_ver:%08X %d.%d (%d)\n",
2012 &ss_res->start, descs_pool_size,
2013 cpsw->version, CPSW_MAJOR_VERSION(cpsw->version),
2014 CPSW_MINOR_VERSION(cpsw->version),
2015 CPSW_RTL_VERSION(cpsw->version));
2017 pm_runtime_put(dev);
2021 clean_unregister_notifiers:
2022 cpsw_unregister_notifiers(cpsw);
2023 clean_unregister_netdev:
2024 cpsw_unregister_ports(cpsw);
2026 cpts_release(cpsw->cpts);
2027 cpdma_ctlr_destroy(cpsw->dma);
2029 cpsw_remove_dt(cpsw);
2030 pm_runtime_put_sync(dev);
2031 pm_runtime_disable(dev);
2035 static int cpsw_remove(struct platform_device *pdev)
2037 struct cpsw_common *cpsw = platform_get_drvdata(pdev);
2040 ret = pm_runtime_get_sync(&pdev->dev);
2042 pm_runtime_put_noidle(&pdev->dev);
2046 cpsw_unregister_notifiers(cpsw);
2047 cpsw_unregister_devlink(cpsw);
2048 cpsw_unregister_ports(cpsw);
2050 cpts_release(cpsw->cpts);
2051 cpdma_ctlr_destroy(cpsw->dma);
2052 cpsw_remove_dt(cpsw);
2053 pm_runtime_put_sync(&pdev->dev);
2054 pm_runtime_disable(&pdev->dev);
2058 static struct platform_driver cpsw_driver = {
2060 .name = "cpsw-switch",
2061 .of_match_table = cpsw_of_mtable,
2063 .probe = cpsw_probe,
2064 .remove = cpsw_remove,
2067 module_platform_driver(cpsw_driver);
2069 MODULE_LICENSE("GPL");
2070 MODULE_DESCRIPTION("TI CPSW switchdev Ethernet driver");