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/pinctrl/consumer.h>
21 #include <linux/pm_runtime.h>
22 #include <linux/gpio/consumer.h>
24 #include <linux/of_mdio.h>
25 #include <linux/of_net.h>
26 #include <linux/of_device.h>
27 #include <linux/if_vlan.h>
28 #include <linux/kmemleak.h>
29 #include <linux/sys_soc.h>
31 #include <net/page_pool.h>
32 #include <net/pkt_cls.h>
33 #include <net/devlink.h>
37 #include "cpsw_priv.h"
39 #include "cpsw_switchdev.h"
41 #include "davinci_cpdma.h"
43 #include <net/pkt_sched.h>
45 static int debug_level;
46 static int ale_ageout = CPSW_ALE_AGEOUT_DEFAULT;
47 static int rx_packet_max = CPSW_MAX_PACKET_SIZE;
48 static int descs_pool_size = CPSW_CPDMA_DESCS_POOL_SIZE_DEFAULT;
51 struct cpsw_common *cpsw;
54 enum cpsw_devlink_param_id {
55 CPSW_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
56 CPSW_DL_PARAM_SWITCH_MODE,
57 CPSW_DL_PARAM_ALE_BYPASS,
60 /* struct cpsw_common is not needed, kept here for compatibility
61 * reasons witrh the old driver
63 static int cpsw_slave_index_priv(struct cpsw_common *cpsw,
64 struct cpsw_priv *priv)
66 if (priv->emac_port == HOST_PORT_NUM)
69 return priv->emac_port - 1;
72 static bool cpsw_is_switch_en(struct cpsw_common *cpsw)
74 return !cpsw->data.dual_emac;
77 static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
79 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
80 bool enable_uni = false;
83 if (cpsw_is_switch_en(cpsw))
86 /* Enabling promiscuous mode for one interface will be
87 * common for both the interface as the interface shares
88 * the same hardware resource.
90 for (i = 0; i < cpsw->data.slaves; i++)
91 if (cpsw->slaves[i].ndev &&
92 (cpsw->slaves[i].ndev->flags & IFF_PROMISC))
95 if (!enable && enable_uni) {
97 dev_dbg(cpsw->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
101 /* Enable unknown unicast, reg/unreg mcast */
102 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
103 ALE_P0_UNI_FLOOD, 1);
105 dev_dbg(cpsw->dev, "promiscuity enabled\n");
107 /* Disable unknown unicast */
108 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
109 ALE_P0_UNI_FLOOD, 0);
110 dev_dbg(cpsw->dev, "promiscuity disabled\n");
115 * cpsw_set_mc - adds multicast entry to the table if it's not added or deletes
116 * if it's not deleted
117 * @ndev: device to sync
118 * @addr: address to be added or deleted
119 * @vid: vlan id, if vid < 0 set/unset address for real device
120 * @add: add address if the flag is set or remove otherwise
122 static int cpsw_set_mc(struct net_device *ndev, const u8 *addr,
125 struct cpsw_priv *priv = netdev_priv(ndev);
126 struct cpsw_common *cpsw = priv->cpsw;
127 int mask, flags, ret, slave_no;
129 slave_no = cpsw_slave_index(cpsw, priv);
131 vid = cpsw->slaves[slave_no].port_vlan;
133 mask = ALE_PORT_HOST;
134 flags = vid ? ALE_VLAN : 0;
137 ret = cpsw_ale_add_mcast(cpsw->ale, addr, mask, flags, vid, 0);
139 ret = cpsw_ale_del_mcast(cpsw->ale, addr, 0, flags, vid);
144 static int cpsw_update_vlan_mc(struct net_device *vdev, int vid, void *ctx)
146 struct addr_sync_ctx *sync_ctx = ctx;
147 struct netdev_hw_addr *ha;
148 int found = 0, ret = 0;
150 if (!vdev || !(vdev->flags & IFF_UP))
153 /* vlan address is relevant if its sync_cnt != 0 */
154 netdev_for_each_mc_addr(ha, vdev) {
155 if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
156 found = ha->sync_cnt;
162 sync_ctx->consumed++;
164 if (sync_ctx->flush) {
166 cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
171 ret = cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 1);
176 static int cpsw_add_mc_addr(struct net_device *ndev, const u8 *addr, int num)
178 struct addr_sync_ctx sync_ctx;
181 sync_ctx.consumed = 0;
182 sync_ctx.addr = addr;
183 sync_ctx.ndev = ndev;
186 ret = vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
187 if (sync_ctx.consumed < num && !ret)
188 ret = cpsw_set_mc(ndev, addr, -1, 1);
193 static int cpsw_del_mc_addr(struct net_device *ndev, const u8 *addr, int num)
195 struct addr_sync_ctx sync_ctx;
197 sync_ctx.consumed = 0;
198 sync_ctx.addr = addr;
199 sync_ctx.ndev = ndev;
202 vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
203 if (sync_ctx.consumed == num)
204 cpsw_set_mc(ndev, addr, -1, 0);
209 static int cpsw_purge_vlan_mc(struct net_device *vdev, int vid, void *ctx)
211 struct addr_sync_ctx *sync_ctx = ctx;
212 struct netdev_hw_addr *ha;
215 if (!vdev || !(vdev->flags & IFF_UP))
218 /* vlan address is relevant if its sync_cnt != 0 */
219 netdev_for_each_mc_addr(ha, vdev) {
220 if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
221 found = ha->sync_cnt;
229 sync_ctx->consumed++;
230 cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
234 static int cpsw_purge_all_mc(struct net_device *ndev, const u8 *addr, int num)
236 struct addr_sync_ctx sync_ctx;
238 sync_ctx.addr = addr;
239 sync_ctx.ndev = ndev;
240 sync_ctx.consumed = 0;
242 vlan_for_each(ndev, cpsw_purge_vlan_mc, &sync_ctx);
243 if (sync_ctx.consumed < num)
244 cpsw_set_mc(ndev, addr, -1, 0);
249 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
251 struct cpsw_priv *priv = netdev_priv(ndev);
252 struct cpsw_common *cpsw = priv->cpsw;
254 if (ndev->flags & IFF_PROMISC) {
255 /* Enable promiscuous mode */
256 cpsw_set_promiscious(ndev, true);
257 cpsw_ale_set_allmulti(cpsw->ale, IFF_ALLMULTI, priv->emac_port);
261 /* Disable promiscuous mode */
262 cpsw_set_promiscious(ndev, false);
264 /* Restore allmulti on vlans if necessary */
265 cpsw_ale_set_allmulti(cpsw->ale,
266 ndev->flags & IFF_ALLMULTI, priv->emac_port);
268 /* add/remove mcast address either for real netdev or for vlan */
269 __hw_addr_ref_sync_dev(&ndev->mc, ndev, cpsw_add_mc_addr,
273 static unsigned int cpsw_rxbuf_total_len(unsigned int len)
275 len += CPSW_HEADROOM;
276 len += SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
278 return SKB_DATA_ALIGN(len);
281 static void cpsw_rx_handler(void *token, int len, int status)
283 struct page *new_page, *page = token;
284 void *pa = page_address(page);
285 int headroom = CPSW_HEADROOM;
286 struct cpsw_meta_xdp *xmeta;
287 struct cpsw_common *cpsw;
288 struct net_device *ndev;
289 int port, ch, pkt_size;
290 struct cpsw_priv *priv;
291 struct page_pool *pool;
297 xmeta = pa + CPSW_XMETA_OFFSET;
298 cpsw = ndev_to_cpsw(xmeta->ndev);
300 pkt_size = cpsw->rx_packet_max;
304 port = CPDMA_RX_SOURCE_PORT(status);
306 ndev = cpsw->slaves[--port].ndev;
309 priv = netdev_priv(ndev);
310 pool = cpsw->page_pool[ch];
312 if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
313 /* In dual emac mode check for all interfaces */
314 if (cpsw->usage_count && status >= 0) {
315 /* The packet received is for the interface which
316 * is already down and the other interface is up
317 * and running, instead of freeing which results
318 * in reducing of the number of rx descriptor in
319 * DMA engine, requeue page back to cpdma.
325 /* the interface is going down, pages are purged */
326 page_pool_recycle_direct(pool, page);
330 new_page = page_pool_dev_alloc_pages(pool);
331 if (unlikely(!new_page)) {
333 ndev->stats.rx_dropped++;
337 if (priv->xdp_prog) {
338 int headroom = CPSW_HEADROOM, size = len;
340 xdp_init_buff(&xdp, PAGE_SIZE, &priv->xdp_rxq[ch]);
341 if (status & CPDMA_RX_VLAN_ENCAP) {
342 headroom += CPSW_RX_VLAN_ENCAP_HDR_SIZE;
343 size -= CPSW_RX_VLAN_ENCAP_HDR_SIZE;
346 xdp_prepare_buff(&xdp, pa, headroom, size, false);
348 ret = cpsw_run_xdp(priv, ch, &xdp, page, priv->emac_port, &len);
349 if (ret != CPSW_XDP_PASS)
352 headroom = xdp.data - xdp.data_hard_start;
354 /* XDP prog can modify vlan tag, so can't use encap header */
355 status &= ~CPDMA_RX_VLAN_ENCAP;
358 /* pass skb to netstack if no XDP prog or returned XDP_PASS */
359 skb = build_skb(pa, cpsw_rxbuf_total_len(pkt_size));
361 ndev->stats.rx_dropped++;
362 page_pool_recycle_direct(pool, page);
366 skb->offload_fwd_mark = priv->offload_fwd_mark;
367 skb_reserve(skb, headroom);
370 if (status & CPDMA_RX_VLAN_ENCAP)
371 cpsw_rx_vlan_encap(skb);
372 if (priv->rx_ts_enabled)
373 cpts_rx_timestamp(cpsw->cpts, skb);
374 skb->protocol = eth_type_trans(skb, ndev);
376 /* mark skb for recycling */
377 skb_mark_for_recycle(skb, page, pool);
378 netif_receive_skb(skb);
380 ndev->stats.rx_bytes += len;
381 ndev->stats.rx_packets++;
384 xmeta = page_address(new_page) + CPSW_XMETA_OFFSET;
388 dma = page_pool_get_dma_addr(new_page) + CPSW_HEADROOM;
389 ret = cpdma_chan_submit_mapped(cpsw->rxv[ch].ch, new_page, dma,
392 WARN_ON(ret == -ENOMEM);
393 page_pool_recycle_direct(pool, new_page);
397 static int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
400 struct cpsw_common *cpsw = priv->cpsw;
401 int unreg_mcast_mask = 0;
406 port_mask = (1 << priv->emac_port) | ALE_PORT_HOST;
408 mcast_mask = ALE_PORT_HOST;
409 if (priv->ndev->flags & IFF_ALLMULTI)
410 unreg_mcast_mask = mcast_mask;
412 ret = cpsw_ale_add_vlan(cpsw->ale, vid, port_mask, 0, port_mask,
417 ret = cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
418 HOST_PORT_NUM, ALE_VLAN, vid);
422 ret = cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
423 mcast_mask, ALE_VLAN, vid, 0);
425 goto clean_vlan_ucast;
429 cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
430 HOST_PORT_NUM, ALE_VLAN, vid);
432 cpsw_ale_del_vlan(cpsw->ale, vid, 0);
436 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
437 __be16 proto, u16 vid)
439 struct cpsw_priv *priv = netdev_priv(ndev);
440 struct cpsw_common *cpsw = priv->cpsw;
443 if (cpsw_is_switch_en(cpsw)) {
444 dev_dbg(cpsw->dev, ".ndo_vlan_rx_add_vid called in switch mode\n");
448 if (vid == cpsw->data.default_vlan)
451 ret = pm_runtime_get_sync(cpsw->dev);
453 pm_runtime_put_noidle(cpsw->dev);
457 /* In dual EMAC, reserved VLAN id should not be used for
458 * creating VLAN interfaces as this can break the dual
459 * EMAC port separation
461 for (i = 0; i < cpsw->data.slaves; i++) {
462 if (cpsw->slaves[i].ndev &&
463 vid == cpsw->slaves[i].port_vlan) {
469 dev_dbg(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
470 ret = cpsw_add_vlan_ale_entry(priv, vid);
472 pm_runtime_put(cpsw->dev);
476 static int cpsw_restore_vlans(struct net_device *vdev, int vid, void *arg)
478 struct cpsw_priv *priv = arg;
483 cpsw_ndo_vlan_rx_add_vid(priv->ndev, 0, vid);
487 /* restore resources after port reset */
488 static void cpsw_restore(struct cpsw_priv *priv)
490 struct cpsw_common *cpsw = priv->cpsw;
492 /* restore vlan configurations */
493 vlan_for_each(priv->ndev, cpsw_restore_vlans, priv);
495 /* restore MQPRIO offload */
496 cpsw_mqprio_resume(&cpsw->slaves[priv->emac_port - 1], priv);
498 /* restore CBS offload */
499 cpsw_cbs_resume(&cpsw->slaves[priv->emac_port - 1], priv);
502 static void cpsw_init_stp_ale_entry(struct cpsw_common *cpsw)
504 char stpa[] = {0x01, 0x80, 0xc2, 0x0, 0x0, 0x0};
506 cpsw_ale_add_mcast(cpsw->ale, stpa,
507 ALE_PORT_HOST, ALE_SUPER, 0,
508 ALE_MCAST_BLOCK_LEARN_FWD);
511 static void cpsw_init_host_port_switch(struct cpsw_common *cpsw)
513 int vlan = cpsw->data.default_vlan;
515 writel(CPSW_FIFO_NORMAL_MODE, &cpsw->host_port_regs->tx_in_ctl);
517 writel(vlan, &cpsw->host_port_regs->port_vlan);
519 cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS,
520 ALE_ALL_PORTS, ALE_ALL_PORTS,
521 ALE_PORT_1 | ALE_PORT_2);
523 cpsw_init_stp_ale_entry(cpsw);
525 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_P0_UNI_FLOOD, 1);
526 dev_dbg(cpsw->dev, "Set P0_UNI_FLOOD\n");
527 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_PORT_NOLEARN, 0);
530 static void cpsw_init_host_port_dual_mac(struct cpsw_common *cpsw)
532 int vlan = cpsw->data.default_vlan;
534 writel(CPSW_FIFO_DUAL_MAC_MODE, &cpsw->host_port_regs->tx_in_ctl);
536 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_P0_UNI_FLOOD, 0);
537 dev_dbg(cpsw->dev, "unset P0_UNI_FLOOD\n");
539 writel(vlan, &cpsw->host_port_regs->port_vlan);
541 cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0);
542 /* learning make no sense in dual_mac mode */
543 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_PORT_NOLEARN, 1);
546 static void cpsw_init_host_port(struct cpsw_priv *priv)
548 struct cpsw_common *cpsw = priv->cpsw;
551 /* soft reset the controller and initialize ale */
552 soft_reset("cpsw", &cpsw->regs->soft_reset);
553 cpsw_ale_start(cpsw->ale);
555 /* switch to vlan unaware mode */
556 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_VLAN_AWARE,
557 CPSW_ALE_VLAN_AWARE);
558 control_reg = readl(&cpsw->regs->control);
559 control_reg |= CPSW_VLAN_AWARE | CPSW_RX_VLAN_ENCAP;
560 writel(control_reg, &cpsw->regs->control);
562 /* setup host port priority mapping */
563 writel_relaxed(CPDMA_TX_PRIORITY_MAP,
564 &cpsw->host_port_regs->cpdma_tx_pri_map);
565 writel_relaxed(0, &cpsw->host_port_regs->cpdma_rx_chan_map);
567 /* disable priority elevation */
568 writel_relaxed(0, &cpsw->regs->ptype);
570 /* enable statistics collection only on all ports */
571 writel_relaxed(0x7, &cpsw->regs->stat_port_en);
573 /* Enable internal fifo flow control */
574 writel(0x7, &cpsw->regs->flow_control);
576 if (cpsw_is_switch_en(cpsw))
577 cpsw_init_host_port_switch(cpsw);
579 cpsw_init_host_port_dual_mac(cpsw);
581 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
582 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
585 static void cpsw_port_add_dual_emac_def_ale_entries(struct cpsw_priv *priv,
586 struct cpsw_slave *slave)
588 u32 port_mask = 1 << priv->emac_port | ALE_PORT_HOST;
589 struct cpsw_common *cpsw = priv->cpsw;
592 reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
594 slave_write(slave, slave->port_vlan, reg);
596 cpsw_ale_add_vlan(cpsw->ale, slave->port_vlan, port_mask,
597 port_mask, port_mask, 0);
598 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
599 ALE_PORT_HOST, ALE_VLAN, slave->port_vlan,
601 cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
602 HOST_PORT_NUM, ALE_VLAN |
603 ALE_SECURE, slave->port_vlan);
604 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
605 ALE_PORT_DROP_UNKNOWN_VLAN, 1);
606 /* learning make no sense in dual_mac mode */
607 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
608 ALE_PORT_NOLEARN, 1);
611 static void cpsw_port_add_switch_def_ale_entries(struct cpsw_priv *priv,
612 struct cpsw_slave *slave)
614 u32 port_mask = 1 << priv->emac_port | ALE_PORT_HOST;
615 struct cpsw_common *cpsw = priv->cpsw;
618 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
619 ALE_PORT_DROP_UNKNOWN_VLAN, 0);
620 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
621 ALE_PORT_NOLEARN, 0);
622 /* disabling SA_UPDATE required to make stp work, without this setting
623 * Host MAC addresses will jump between ports.
624 * As per TRM MAC address can be defined as unicast supervisory (super)
625 * by setting both (ALE_BLOCKED | ALE_SECURE) which should prevent
626 * SA_UPDATE, but HW seems works incorrectly and setting ALE_SECURE
627 * causes STP packets to be dropped due to ingress filter
628 * if (source address found) and (secure) and
629 * (receive port number != port_number))
630 * then discard the packet
632 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
633 ALE_PORT_NO_SA_UPDATE, 1);
635 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
636 port_mask, ALE_VLAN, slave->port_vlan,
638 cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
639 HOST_PORT_NUM, ALE_VLAN, slave->port_vlan);
641 reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
643 slave_write(slave, slave->port_vlan, reg);
646 static void cpsw_adjust_link(struct net_device *ndev)
648 struct cpsw_priv *priv = netdev_priv(ndev);
649 struct cpsw_common *cpsw = priv->cpsw;
650 struct cpsw_slave *slave;
651 struct phy_device *phy;
654 slave = &cpsw->slaves[priv->emac_port - 1];
661 mac_control = CPSW_SL_CTL_GMII_EN;
663 if (phy->speed == 1000)
664 mac_control |= CPSW_SL_CTL_GIG;
666 mac_control |= CPSW_SL_CTL_FULLDUPLEX;
668 /* set speed_in input in case RMII mode is used in 100Mbps */
669 if (phy->speed == 100)
670 mac_control |= CPSW_SL_CTL_IFCTL_A;
671 /* in band mode only works in 10Mbps RGMII mode */
672 else if ((phy->speed == 10) && phy_interface_is_rgmii(phy))
673 mac_control |= CPSW_SL_CTL_EXT_EN; /* In Band mode */
676 mac_control |= CPSW_SL_CTL_RX_FLOW_EN;
679 mac_control |= CPSW_SL_CTL_TX_FLOW_EN;
681 if (mac_control != slave->mac_control)
682 cpsw_sl_ctl_set(slave->mac_sl, mac_control);
684 /* enable forwarding */
685 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
686 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
688 netif_tx_wake_all_queues(ndev);
690 if (priv->shp_cfg_speed &&
691 priv->shp_cfg_speed != slave->phy->speed &&
692 !cpsw_shp_is_off(priv))
693 dev_warn(priv->dev, "Speed was changed, CBS shaper speeds are changed!");
695 netif_tx_stop_all_queues(ndev);
698 /* disable forwarding */
699 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
700 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
702 cpsw_sl_wait_for_idle(slave->mac_sl, 100);
704 cpsw_sl_ctl_reset(slave->mac_sl);
707 if (mac_control != slave->mac_control)
708 phy_print_status(phy);
710 slave->mac_control = mac_control;
712 if (phy->link && cpsw_need_resplit(cpsw))
713 cpsw_split_res(cpsw);
716 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
718 struct cpsw_common *cpsw = priv->cpsw;
719 struct phy_device *phy;
721 cpsw_sl_reset(slave->mac_sl, 100);
722 cpsw_sl_ctl_reset(slave->mac_sl);
724 /* setup priority mapping */
725 cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_PRI_MAP,
726 RX_PRIORITY_MAPPING);
728 switch (cpsw->version) {
730 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
731 /* Increase RX FIFO size to 5 for supporting fullduplex
735 (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
736 CPSW_MAX_BLKS_RX, CPSW1_MAX_BLKS);
741 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
742 /* Increase RX FIFO size to 5 for supporting fullduplex
746 (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
747 CPSW_MAX_BLKS_RX, CPSW2_MAX_BLKS);
751 /* setup max packet size, and mac address */
752 cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_MAXLEN,
753 cpsw->rx_packet_max);
754 cpsw_set_slave_mac(slave, priv);
756 slave->mac_control = 0; /* no link yet */
758 if (cpsw_is_switch_en(cpsw))
759 cpsw_port_add_switch_def_ale_entries(priv, slave);
761 cpsw_port_add_dual_emac_def_ale_entries(priv, slave);
763 if (!slave->data->phy_node)
764 dev_err(priv->dev, "no phy found on slave %d\n",
766 phy = of_phy_connect(priv->ndev, slave->data->phy_node,
767 &cpsw_adjust_link, 0, slave->data->phy_if);
769 dev_err(priv->dev, "phy \"%pOF\" not found on slave %d\n",
770 slave->data->phy_node,
776 phy_attached_info(slave->phy);
778 phy_start(slave->phy);
780 /* Configure GMII_SEL register */
781 phy_set_mode_ext(slave->data->ifphy, PHY_MODE_ETHERNET,
782 slave->data->phy_if);
785 static int cpsw_ndo_stop(struct net_device *ndev)
787 struct cpsw_priv *priv = netdev_priv(ndev);
788 struct cpsw_common *cpsw = priv->cpsw;
789 struct cpsw_slave *slave;
791 cpsw_info(priv, ifdown, "shutting down ndev\n");
792 slave = &cpsw->slaves[priv->emac_port - 1];
794 phy_stop(slave->phy);
796 netif_tx_stop_all_queues(priv->ndev);
799 phy_disconnect(slave->phy);
803 __hw_addr_ref_unsync_dev(&ndev->mc, ndev, cpsw_purge_all_mc);
805 if (cpsw->usage_count <= 1) {
806 napi_disable(&cpsw->napi_rx);
807 napi_disable(&cpsw->napi_tx);
808 cpts_unregister(cpsw->cpts);
809 cpsw_intr_disable(cpsw);
810 cpdma_ctlr_stop(cpsw->dma);
811 cpsw_ale_stop(cpsw->ale);
812 cpsw_destroy_xdp_rxqs(cpsw);
815 if (cpsw_need_resplit(cpsw))
816 cpsw_split_res(cpsw);
819 pm_runtime_put_sync(cpsw->dev);
823 static int cpsw_ndo_open(struct net_device *ndev)
825 struct cpsw_priv *priv = netdev_priv(ndev);
826 struct cpsw_common *cpsw = priv->cpsw;
829 dev_info(priv->dev, "starting ndev. mode: %s\n",
830 cpsw_is_switch_en(cpsw) ? "switch" : "dual_mac");
831 ret = pm_runtime_get_sync(cpsw->dev);
833 pm_runtime_put_noidle(cpsw->dev);
837 /* Notify the stack of the actual queue counts. */
838 ret = netif_set_real_num_tx_queues(ndev, cpsw->tx_ch_num);
840 dev_err(priv->dev, "cannot set real number of tx queues\n");
844 ret = netif_set_real_num_rx_queues(ndev, cpsw->rx_ch_num);
846 dev_err(priv->dev, "cannot set real number of rx queues\n");
850 /* Initialize host and slave ports */
851 if (!cpsw->usage_count)
852 cpsw_init_host_port(priv);
853 cpsw_slave_open(&cpsw->slaves[priv->emac_port - 1], priv);
855 /* initialize shared resources for every ndev */
856 if (!cpsw->usage_count) {
857 /* create rxqs for both infs in dual mac as they use same pool
858 * and must be destroyed together when no users.
860 ret = cpsw_create_xdp_rxqs(cpsw);
864 ret = cpsw_fill_rx_channels(priv);
869 if (cpts_register(cpsw->cpts))
870 dev_err(priv->dev, "error registering cpts device\n");
872 writel(0x10, &cpsw->wr_regs->misc_en);
875 napi_enable(&cpsw->napi_rx);
876 napi_enable(&cpsw->napi_tx);
878 if (cpsw->tx_irq_disabled) {
879 cpsw->tx_irq_disabled = false;
880 enable_irq(cpsw->irqs_table[1]);
883 if (cpsw->rx_irq_disabled) {
884 cpsw->rx_irq_disabled = false;
885 enable_irq(cpsw->irqs_table[0]);
891 /* Enable Interrupt pacing if configured */
892 if (cpsw->coal_intvl != 0) {
893 struct ethtool_coalesce coal;
895 coal.rx_coalesce_usecs = cpsw->coal_intvl;
896 cpsw_set_coalesce(ndev, &coal);
899 cpdma_ctlr_start(cpsw->dma);
900 cpsw_intr_enable(cpsw);
909 pm_runtime_put_sync(cpsw->dev);
913 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
914 struct net_device *ndev)
916 struct cpsw_priv *priv = netdev_priv(ndev);
917 struct cpsw_common *cpsw = priv->cpsw;
918 struct cpts *cpts = cpsw->cpts;
919 struct netdev_queue *txq;
920 struct cpdma_chan *txch;
923 if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
924 cpsw_err(priv, tx_err, "packet pad failed\n");
925 ndev->stats.tx_dropped++;
926 return NET_XMIT_DROP;
929 if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
930 priv->tx_ts_enabled && cpts_can_timestamp(cpts, skb))
931 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
933 q_idx = skb_get_queue_mapping(skb);
934 if (q_idx >= cpsw->tx_ch_num)
935 q_idx = q_idx % cpsw->tx_ch_num;
937 txch = cpsw->txv[q_idx].ch;
938 txq = netdev_get_tx_queue(ndev, q_idx);
939 skb_tx_timestamp(skb);
940 ret = cpdma_chan_submit(txch, skb, skb->data, skb->len,
942 if (unlikely(ret != 0)) {
943 cpsw_err(priv, tx_err, "desc submit failed\n");
947 /* If there is no more tx desc left free then we need to
948 * tell the kernel to stop sending us tx frames.
950 if (unlikely(!cpdma_check_free_tx_desc(txch))) {
951 netif_tx_stop_queue(txq);
953 /* Barrier, so that stop_queue visible to other cpus */
954 smp_mb__after_atomic();
956 if (cpdma_check_free_tx_desc(txch))
957 netif_tx_wake_queue(txq);
962 ndev->stats.tx_dropped++;
963 netif_tx_stop_queue(txq);
965 /* Barrier, so that stop_queue visible to other cpus */
966 smp_mb__after_atomic();
968 if (cpdma_check_free_tx_desc(txch))
969 netif_tx_wake_queue(txq);
971 return NETDEV_TX_BUSY;
974 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
976 struct sockaddr *addr = (struct sockaddr *)p;
977 struct cpsw_priv *priv = netdev_priv(ndev);
978 struct cpsw_common *cpsw = priv->cpsw;
983 slave_no = cpsw_slave_index(cpsw, priv);
984 if (!is_valid_ether_addr(addr->sa_data))
985 return -EADDRNOTAVAIL;
987 ret = pm_runtime_get_sync(cpsw->dev);
989 pm_runtime_put_noidle(cpsw->dev);
993 vid = cpsw->slaves[slave_no].port_vlan;
994 flags = ALE_VLAN | ALE_SECURE;
996 cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
998 cpsw_ale_add_ucast(cpsw->ale, addr->sa_data, HOST_PORT_NUM,
1001 ether_addr_copy(priv->mac_addr, addr->sa_data);
1002 ether_addr_copy(ndev->dev_addr, priv->mac_addr);
1003 cpsw_set_slave_mac(&cpsw->slaves[slave_no], priv);
1005 pm_runtime_put(cpsw->dev);
1010 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1011 __be16 proto, u16 vid)
1013 struct cpsw_priv *priv = netdev_priv(ndev);
1014 struct cpsw_common *cpsw = priv->cpsw;
1018 if (cpsw_is_switch_en(cpsw)) {
1019 dev_dbg(cpsw->dev, "ndo del vlan is called in switch mode\n");
1023 if (vid == cpsw->data.default_vlan)
1026 ret = pm_runtime_get_sync(cpsw->dev);
1028 pm_runtime_put_noidle(cpsw->dev);
1032 /* reset the return code as pm_runtime_get_sync() can return
1033 * non zero values as well.
1036 for (i = 0; i < cpsw->data.slaves; i++) {
1037 if (cpsw->slaves[i].ndev &&
1038 vid == cpsw->slaves[i].port_vlan) {
1044 dev_dbg(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1045 ret = cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1047 dev_err(priv->dev, "cpsw_ale_del_vlan() failed: ret %d\n", ret);
1048 ret = cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1049 HOST_PORT_NUM, ALE_VLAN, vid);
1051 dev_err(priv->dev, "cpsw_ale_del_ucast() failed: ret %d\n",
1053 ret = cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
1056 dev_err(priv->dev, "cpsw_ale_del_mcast failed. ret %d\n",
1058 cpsw_ale_flush_multicast(cpsw->ale, ALE_PORT_HOST, vid);
1061 pm_runtime_put(cpsw->dev);
1065 static int cpsw_ndo_get_phys_port_name(struct net_device *ndev, char *name,
1068 struct cpsw_priv *priv = netdev_priv(ndev);
1071 err = snprintf(name, len, "p%d", priv->emac_port);
1079 #ifdef CONFIG_NET_POLL_CONTROLLER
1080 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1082 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1084 cpsw_intr_disable(cpsw);
1085 cpsw_rx_interrupt(cpsw->irqs_table[0], cpsw);
1086 cpsw_tx_interrupt(cpsw->irqs_table[1], cpsw);
1087 cpsw_intr_enable(cpsw);
1091 static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n,
1092 struct xdp_frame **frames, u32 flags)
1094 struct cpsw_priv *priv = netdev_priv(ndev);
1095 struct xdp_frame *xdpf;
1098 if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
1101 for (i = 0; i < n; i++) {
1103 if (xdpf->len < CPSW_MIN_PACKET_SIZE)
1106 if (cpsw_xdp_tx_frame(priv, xdpf, NULL, priv->emac_port))
1114 static int cpsw_get_port_parent_id(struct net_device *ndev,
1115 struct netdev_phys_item_id *ppid)
1117 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1119 ppid->id_len = sizeof(cpsw->base_mac);
1120 memcpy(&ppid->id, &cpsw->base_mac, ppid->id_len);
1125 static const struct net_device_ops cpsw_netdev_ops = {
1126 .ndo_open = cpsw_ndo_open,
1127 .ndo_stop = cpsw_ndo_stop,
1128 .ndo_start_xmit = cpsw_ndo_start_xmit,
1129 .ndo_set_mac_address = cpsw_ndo_set_mac_address,
1130 .ndo_do_ioctl = cpsw_ndo_ioctl,
1131 .ndo_validate_addr = eth_validate_addr,
1132 .ndo_tx_timeout = cpsw_ndo_tx_timeout,
1133 .ndo_set_rx_mode = cpsw_ndo_set_rx_mode,
1134 .ndo_set_tx_maxrate = cpsw_ndo_set_tx_maxrate,
1135 #ifdef CONFIG_NET_POLL_CONTROLLER
1136 .ndo_poll_controller = cpsw_ndo_poll_controller,
1138 .ndo_vlan_rx_add_vid = cpsw_ndo_vlan_rx_add_vid,
1139 .ndo_vlan_rx_kill_vid = cpsw_ndo_vlan_rx_kill_vid,
1140 .ndo_setup_tc = cpsw_ndo_setup_tc,
1141 .ndo_get_phys_port_name = cpsw_ndo_get_phys_port_name,
1142 .ndo_bpf = cpsw_ndo_bpf,
1143 .ndo_xdp_xmit = cpsw_ndo_xdp_xmit,
1144 .ndo_get_port_parent_id = cpsw_get_port_parent_id,
1147 static void cpsw_get_drvinfo(struct net_device *ndev,
1148 struct ethtool_drvinfo *info)
1150 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1151 struct platform_device *pdev;
1153 pdev = to_platform_device(cpsw->dev);
1154 strlcpy(info->driver, "cpsw-switch", sizeof(info->driver));
1155 strlcpy(info->version, "2.0", sizeof(info->version));
1156 strlcpy(info->bus_info, pdev->name, sizeof(info->bus_info));
1159 static int cpsw_set_pauseparam(struct net_device *ndev,
1160 struct ethtool_pauseparam *pause)
1162 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1163 struct cpsw_priv *priv = netdev_priv(ndev);
1166 slave_no = cpsw_slave_index(cpsw, priv);
1167 if (!cpsw->slaves[slave_no].phy)
1170 if (!phy_validate_pause(cpsw->slaves[slave_no].phy, pause))
1173 priv->rx_pause = pause->rx_pause ? true : false;
1174 priv->tx_pause = pause->tx_pause ? true : false;
1176 phy_set_asym_pause(cpsw->slaves[slave_no].phy,
1177 priv->rx_pause, priv->tx_pause);
1182 static int cpsw_set_channels(struct net_device *ndev,
1183 struct ethtool_channels *chs)
1185 return cpsw_set_channels_common(ndev, chs, cpsw_rx_handler);
1188 static const struct ethtool_ops cpsw_ethtool_ops = {
1189 .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
1190 .get_drvinfo = cpsw_get_drvinfo,
1191 .get_msglevel = cpsw_get_msglevel,
1192 .set_msglevel = cpsw_set_msglevel,
1193 .get_link = ethtool_op_get_link,
1194 .get_ts_info = cpsw_get_ts_info,
1195 .get_coalesce = cpsw_get_coalesce,
1196 .set_coalesce = cpsw_set_coalesce,
1197 .get_sset_count = cpsw_get_sset_count,
1198 .get_strings = cpsw_get_strings,
1199 .get_ethtool_stats = cpsw_get_ethtool_stats,
1200 .get_pauseparam = cpsw_get_pauseparam,
1201 .set_pauseparam = cpsw_set_pauseparam,
1202 .get_wol = cpsw_get_wol,
1203 .set_wol = cpsw_set_wol,
1204 .get_regs_len = cpsw_get_regs_len,
1205 .get_regs = cpsw_get_regs,
1206 .begin = cpsw_ethtool_op_begin,
1207 .complete = cpsw_ethtool_op_complete,
1208 .get_channels = cpsw_get_channels,
1209 .set_channels = cpsw_set_channels,
1210 .get_link_ksettings = cpsw_get_link_ksettings,
1211 .set_link_ksettings = cpsw_set_link_ksettings,
1212 .get_eee = cpsw_get_eee,
1213 .set_eee = cpsw_set_eee,
1214 .nway_reset = cpsw_nway_reset,
1215 .get_ringparam = cpsw_get_ringparam,
1216 .set_ringparam = cpsw_set_ringparam,
1219 static int cpsw_probe_dt(struct cpsw_common *cpsw)
1221 struct device_node *node = cpsw->dev->of_node, *tmp_node, *port_np;
1222 struct cpsw_platform_data *data = &cpsw->data;
1223 struct device *dev = cpsw->dev;
1230 tmp_node = of_get_child_by_name(node, "ethernet-ports");
1233 data->slaves = of_get_child_count(tmp_node);
1234 if (data->slaves != CPSW_SLAVE_PORTS_NUM) {
1235 of_node_put(tmp_node);
1239 data->active_slave = 0;
1240 data->channels = CPSW_MAX_QUEUES;
1241 data->dual_emac = true;
1242 data->bd_ram_size = CPSW_BD_RAM_SIZE;
1243 data->mac_control = 0;
1245 data->slave_data = devm_kcalloc(dev, CPSW_SLAVE_PORTS_NUM,
1246 sizeof(struct cpsw_slave_data),
1248 if (!data->slave_data)
1251 /* Populate all the child nodes here...
1253 ret = devm_of_platform_populate(dev);
1254 /* We do not want to force this, as in some cases may not have child */
1256 dev_warn(dev, "Doesn't have any child node\n");
1258 for_each_child_of_node(tmp_node, port_np) {
1259 struct cpsw_slave_data *slave_data;
1262 ret = of_property_read_u32(port_np, "reg", &port_id);
1264 dev_err(dev, "%pOF error reading port_id %d\n",
1269 if (!port_id || port_id > CPSW_SLAVE_PORTS_NUM) {
1270 dev_err(dev, "%pOF has invalid port_id %u\n",
1276 slave_data = &data->slave_data[port_id - 1];
1278 slave_data->disabled = !of_device_is_available(port_np);
1279 if (slave_data->disabled)
1282 slave_data->slave_node = port_np;
1283 slave_data->ifphy = devm_of_phy_get(dev, port_np, NULL);
1284 if (IS_ERR(slave_data->ifphy)) {
1285 ret = PTR_ERR(slave_data->ifphy);
1286 dev_err(dev, "%pOF: Error retrieving port phy: %d\n",
1291 if (of_phy_is_fixed_link(port_np)) {
1292 ret = of_phy_register_fixed_link(port_np);
1294 if (ret != -EPROBE_DEFER)
1295 dev_err(dev, "%pOF failed to register fixed-link phy: %d\n",
1299 slave_data->phy_node = of_node_get(port_np);
1301 slave_data->phy_node =
1302 of_parse_phandle(port_np, "phy-handle", 0);
1305 if (!slave_data->phy_node) {
1306 dev_err(dev, "%pOF no phy found\n", port_np);
1311 ret = of_get_phy_mode(port_np, &slave_data->phy_if);
1313 dev_err(dev, "%pOF read phy-mode err %d\n",
1318 ret = of_get_mac_address(port_np, slave_data->mac_addr);
1320 ret = ti_cm_get_macid(dev, port_id - 1,
1321 slave_data->mac_addr);
1326 if (of_property_read_u32(port_np, "ti,dual-emac-pvid",
1328 dev_err(dev, "%pOF Missing dual_emac_res_vlan in DT.\n",
1330 slave_data->dual_emac_res_vlan = port_id;
1331 dev_err(dev, "%pOF Using %d as Reserved VLAN\n",
1332 port_np, slave_data->dual_emac_res_vlan);
1334 slave_data->dual_emac_res_vlan = prop;
1338 of_node_put(tmp_node);
1342 of_node_put(port_np);
1346 static void cpsw_remove_dt(struct cpsw_common *cpsw)
1348 struct cpsw_platform_data *data = &cpsw->data;
1351 for (i = 0; i < cpsw->data.slaves; i++) {
1352 struct cpsw_slave_data *slave_data = &data->slave_data[i];
1353 struct device_node *port_np = slave_data->phy_node;
1356 if (of_phy_is_fixed_link(port_np))
1357 of_phy_deregister_fixed_link(port_np);
1359 of_node_put(port_np);
1364 static int cpsw_create_ports(struct cpsw_common *cpsw)
1366 struct cpsw_platform_data *data = &cpsw->data;
1367 struct net_device *ndev, *napi_ndev = NULL;
1368 struct device *dev = cpsw->dev;
1369 struct cpsw_priv *priv;
1372 for (i = 0; i < cpsw->data.slaves; i++) {
1373 struct cpsw_slave_data *slave_data = &data->slave_data[i];
1375 if (slave_data->disabled)
1378 ndev = devm_alloc_etherdev_mqs(dev, sizeof(struct cpsw_priv),
1382 dev_err(dev, "error allocating net_device\n");
1386 priv = netdev_priv(ndev);
1390 priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1391 priv->emac_port = i + 1;
1393 if (is_valid_ether_addr(slave_data->mac_addr)) {
1394 ether_addr_copy(priv->mac_addr, slave_data->mac_addr);
1395 dev_info(cpsw->dev, "Detected MACID = %pM\n",
1398 eth_random_addr(slave_data->mac_addr);
1399 dev_info(cpsw->dev, "Random MACID = %pM\n",
1402 ether_addr_copy(ndev->dev_addr, slave_data->mac_addr);
1403 ether_addr_copy(priv->mac_addr, slave_data->mac_addr);
1405 cpsw->slaves[i].ndev = ndev;
1407 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER |
1408 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_NETNS_LOCAL;
1410 ndev->netdev_ops = &cpsw_netdev_ops;
1411 ndev->ethtool_ops = &cpsw_ethtool_ops;
1412 SET_NETDEV_DEV(ndev, dev);
1415 /* CPSW Host port CPDMA interface is shared between
1416 * ports and there is only one TX and one RX IRQs
1417 * available for all possible TX and RX channels
1420 netif_napi_add(ndev, &cpsw->napi_rx,
1422 cpsw_rx_poll : cpsw_rx_mq_poll,
1424 netif_tx_napi_add(ndev, &cpsw->napi_tx,
1426 cpsw_tx_poll : cpsw_tx_mq_poll,
1436 static void cpsw_unregister_ports(struct cpsw_common *cpsw)
1440 for (i = 0; i < cpsw->data.slaves; i++) {
1441 if (!cpsw->slaves[i].ndev)
1444 unregister_netdev(cpsw->slaves[i].ndev);
1448 static int cpsw_register_ports(struct cpsw_common *cpsw)
1452 for (i = 0; i < cpsw->data.slaves; i++) {
1453 if (!cpsw->slaves[i].ndev)
1456 /* register the network device */
1457 ret = register_netdev(cpsw->slaves[i].ndev);
1460 "cpsw: err registering net device%d\n", i);
1461 cpsw->slaves[i].ndev = NULL;
1467 cpsw_unregister_ports(cpsw);
1471 bool cpsw_port_dev_check(const struct net_device *ndev)
1473 if (ndev->netdev_ops == &cpsw_netdev_ops) {
1474 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1476 return !cpsw->data.dual_emac;
1482 static void cpsw_port_offload_fwd_mark_update(struct cpsw_common *cpsw)
1487 if (!cpsw->ale_bypass &&
1488 (cpsw->br_members == (ALE_PORT_1 | ALE_PORT_2)))
1491 dev_dbg(cpsw->dev, "set offload_fwd_mark %d\n", set_val);
1493 for (i = 0; i < cpsw->data.slaves; i++) {
1494 struct net_device *sl_ndev = cpsw->slaves[i].ndev;
1495 struct cpsw_priv *priv = netdev_priv(sl_ndev);
1497 priv->offload_fwd_mark = set_val;
1501 static int cpsw_netdevice_port_link(struct net_device *ndev,
1502 struct net_device *br_ndev)
1504 struct cpsw_priv *priv = netdev_priv(ndev);
1505 struct cpsw_common *cpsw = priv->cpsw;
1507 if (!cpsw->br_members) {
1508 cpsw->hw_bridge_dev = br_ndev;
1510 /* This is adding the port to a second bridge, this is
1513 if (cpsw->hw_bridge_dev != br_ndev)
1517 cpsw->br_members |= BIT(priv->emac_port);
1519 cpsw_port_offload_fwd_mark_update(cpsw);
1524 static void cpsw_netdevice_port_unlink(struct net_device *ndev)
1526 struct cpsw_priv *priv = netdev_priv(ndev);
1527 struct cpsw_common *cpsw = priv->cpsw;
1529 cpsw->br_members &= ~BIT(priv->emac_port);
1531 cpsw_port_offload_fwd_mark_update(cpsw);
1533 if (!cpsw->br_members)
1534 cpsw->hw_bridge_dev = NULL;
1537 /* netdev notifier */
1538 static int cpsw_netdevice_event(struct notifier_block *unused,
1539 unsigned long event, void *ptr)
1541 struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
1542 struct netdev_notifier_changeupper_info *info;
1543 int ret = NOTIFY_DONE;
1545 if (!cpsw_port_dev_check(ndev))
1549 case NETDEV_CHANGEUPPER:
1552 if (netif_is_bridge_master(info->upper_dev)) {
1554 ret = cpsw_netdevice_port_link(ndev,
1557 cpsw_netdevice_port_unlink(ndev);
1564 return notifier_from_errno(ret);
1567 static struct notifier_block cpsw_netdevice_nb __read_mostly = {
1568 .notifier_call = cpsw_netdevice_event,
1571 static int cpsw_register_notifiers(struct cpsw_common *cpsw)
1575 ret = register_netdevice_notifier(&cpsw_netdevice_nb);
1577 dev_err(cpsw->dev, "can't register netdevice notifier\n");
1581 ret = cpsw_switchdev_register_notifiers(cpsw);
1583 unregister_netdevice_notifier(&cpsw_netdevice_nb);
1588 static void cpsw_unregister_notifiers(struct cpsw_common *cpsw)
1590 cpsw_switchdev_unregister_notifiers(cpsw);
1591 unregister_netdevice_notifier(&cpsw_netdevice_nb);
1594 static const struct devlink_ops cpsw_devlink_ops = {
1597 static int cpsw_dl_switch_mode_get(struct devlink *dl, u32 id,
1598 struct devlink_param_gset_ctx *ctx)
1600 struct cpsw_devlink *dl_priv = devlink_priv(dl);
1601 struct cpsw_common *cpsw = dl_priv->cpsw;
1603 dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1605 if (id != CPSW_DL_PARAM_SWITCH_MODE)
1608 ctx->val.vbool = !cpsw->data.dual_emac;
1613 static int cpsw_dl_switch_mode_set(struct devlink *dl, u32 id,
1614 struct devlink_param_gset_ctx *ctx)
1616 struct cpsw_devlink *dl_priv = devlink_priv(dl);
1617 struct cpsw_common *cpsw = dl_priv->cpsw;
1618 int vlan = cpsw->data.default_vlan;
1619 bool switch_en = ctx->val.vbool;
1620 bool if_running = false;
1623 dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1625 if (id != CPSW_DL_PARAM_SWITCH_MODE)
1628 if (switch_en == !cpsw->data.dual_emac)
1631 if (!switch_en && cpsw->br_members) {
1632 dev_err(cpsw->dev, "Remove ports from BR before disabling switch mode\n");
1638 for (i = 0; i < cpsw->data.slaves; i++) {
1639 struct cpsw_slave *slave = &cpsw->slaves[i];
1640 struct net_device *sl_ndev = slave->ndev;
1642 if (!sl_ndev || !netif_running(sl_ndev))
1649 /* all ndevs are down */
1650 cpsw->data.dual_emac = !switch_en;
1651 for (i = 0; i < cpsw->data.slaves; i++) {
1652 struct cpsw_slave *slave = &cpsw->slaves[i];
1653 struct net_device *sl_ndev = slave->ndev;
1659 vlan = cpsw->data.default_vlan;
1661 vlan = slave->data->dual_emac_res_vlan;
1662 slave->port_vlan = vlan;
1668 dev_info(cpsw->dev, "Enable switch mode\n");
1670 /* enable bypass - no forwarding; all traffic goes to Host */
1671 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 1);
1673 /* clean up ALE table */
1674 cpsw_ale_control_set(cpsw->ale, 0, ALE_CLEAR, 1);
1675 cpsw_ale_control_get(cpsw->ale, 0, ALE_AGEOUT);
1677 cpsw_init_host_port_switch(cpsw);
1679 for (i = 0; i < cpsw->data.slaves; i++) {
1680 struct cpsw_slave *slave = &cpsw->slaves[i];
1681 struct net_device *sl_ndev = slave->ndev;
1682 struct cpsw_priv *priv;
1687 priv = netdev_priv(sl_ndev);
1688 slave->port_vlan = vlan;
1689 if (netif_running(sl_ndev))
1690 cpsw_port_add_switch_def_ale_entries(priv,
1694 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 0);
1695 cpsw->data.dual_emac = false;
1697 dev_info(cpsw->dev, "Disable switch mode\n");
1699 /* enable bypass - no forwarding; all traffic goes to Host */
1700 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 1);
1702 cpsw_ale_control_set(cpsw->ale, 0, ALE_CLEAR, 1);
1703 cpsw_ale_control_get(cpsw->ale, 0, ALE_AGEOUT);
1705 cpsw_init_host_port_dual_mac(cpsw);
1707 for (i = 0; i < cpsw->data.slaves; i++) {
1708 struct cpsw_slave *slave = &cpsw->slaves[i];
1709 struct net_device *sl_ndev = slave->ndev;
1710 struct cpsw_priv *priv;
1715 priv = netdev_priv(slave->ndev);
1716 slave->port_vlan = slave->data->dual_emac_res_vlan;
1717 cpsw_port_add_dual_emac_def_ale_entries(priv, slave);
1720 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 0);
1721 cpsw->data.dual_emac = true;
1729 static int cpsw_dl_ale_ctrl_get(struct devlink *dl, u32 id,
1730 struct devlink_param_gset_ctx *ctx)
1732 struct cpsw_devlink *dl_priv = devlink_priv(dl);
1733 struct cpsw_common *cpsw = dl_priv->cpsw;
1735 dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1738 case CPSW_DL_PARAM_ALE_BYPASS:
1739 ctx->val.vbool = cpsw_ale_control_get(cpsw->ale, 0, ALE_BYPASS);
1748 static int cpsw_dl_ale_ctrl_set(struct devlink *dl, u32 id,
1749 struct devlink_param_gset_ctx *ctx)
1751 struct cpsw_devlink *dl_priv = devlink_priv(dl);
1752 struct cpsw_common *cpsw = dl_priv->cpsw;
1753 int ret = -EOPNOTSUPP;
1755 dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1758 case CPSW_DL_PARAM_ALE_BYPASS:
1759 ret = cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS,
1762 cpsw->ale_bypass = ctx->val.vbool;
1763 cpsw_port_offload_fwd_mark_update(cpsw);
1773 static const struct devlink_param cpsw_devlink_params[] = {
1774 DEVLINK_PARAM_DRIVER(CPSW_DL_PARAM_SWITCH_MODE,
1775 "switch_mode", DEVLINK_PARAM_TYPE_BOOL,
1776 BIT(DEVLINK_PARAM_CMODE_RUNTIME),
1777 cpsw_dl_switch_mode_get, cpsw_dl_switch_mode_set,
1779 DEVLINK_PARAM_DRIVER(CPSW_DL_PARAM_ALE_BYPASS,
1780 "ale_bypass", DEVLINK_PARAM_TYPE_BOOL,
1781 BIT(DEVLINK_PARAM_CMODE_RUNTIME),
1782 cpsw_dl_ale_ctrl_get, cpsw_dl_ale_ctrl_set, NULL),
1785 static int cpsw_register_devlink(struct cpsw_common *cpsw)
1787 struct device *dev = cpsw->dev;
1788 struct cpsw_devlink *dl_priv;
1791 cpsw->devlink = devlink_alloc(&cpsw_devlink_ops, sizeof(*dl_priv));
1795 dl_priv = devlink_priv(cpsw->devlink);
1796 dl_priv->cpsw = cpsw;
1798 ret = devlink_register(cpsw->devlink, dev);
1800 dev_err(dev, "DL reg fail ret:%d\n", ret);
1804 ret = devlink_params_register(cpsw->devlink, cpsw_devlink_params,
1805 ARRAY_SIZE(cpsw_devlink_params));
1807 dev_err(dev, "DL params reg fail ret:%d\n", ret);
1811 devlink_params_publish(cpsw->devlink);
1815 devlink_unregister(cpsw->devlink);
1817 devlink_free(cpsw->devlink);
1821 static void cpsw_unregister_devlink(struct cpsw_common *cpsw)
1823 devlink_params_unpublish(cpsw->devlink);
1824 devlink_params_unregister(cpsw->devlink, cpsw_devlink_params,
1825 ARRAY_SIZE(cpsw_devlink_params));
1826 devlink_unregister(cpsw->devlink);
1827 devlink_free(cpsw->devlink);
1830 static const struct of_device_id cpsw_of_mtable[] = {
1831 { .compatible = "ti,cpsw-switch"},
1832 { .compatible = "ti,am335x-cpsw-switch"},
1833 { .compatible = "ti,am4372-cpsw-switch"},
1834 { .compatible = "ti,dra7-cpsw-switch"},
1837 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
1839 static const struct soc_device_attribute cpsw_soc_devices[] = {
1840 { .family = "AM33xx", .revision = "ES1.0"},
1844 static int cpsw_probe(struct platform_device *pdev)
1846 const struct soc_device_attribute *soc;
1847 struct device *dev = &pdev->dev;
1848 struct cpsw_common *cpsw;
1849 struct resource *ss_res;
1850 struct gpio_descs *mode;
1851 void __iomem *ss_regs;
1856 cpsw = devm_kzalloc(dev, sizeof(struct cpsw_common), GFP_KERNEL);
1860 cpsw_slave_index = cpsw_slave_index_priv;
1864 cpsw->slaves = devm_kcalloc(dev,
1865 CPSW_SLAVE_PORTS_NUM,
1866 sizeof(struct cpsw_slave),
1871 mode = devm_gpiod_get_array_optional(dev, "mode", GPIOD_OUT_LOW);
1873 ret = PTR_ERR(mode);
1874 dev_err(dev, "gpio request failed, ret %d\n", ret);
1878 clk = devm_clk_get(dev, "fck");
1881 dev_err(dev, "fck is not found %d\n", ret);
1884 cpsw->bus_freq_mhz = clk_get_rate(clk) / 1000000;
1886 ss_regs = devm_platform_get_and_ioremap_resource(pdev, 0, &ss_res);
1887 if (IS_ERR(ss_regs)) {
1888 ret = PTR_ERR(ss_regs);
1891 cpsw->regs = ss_regs;
1893 irq = platform_get_irq_byname(pdev, "rx");
1896 cpsw->irqs_table[0] = irq;
1898 irq = platform_get_irq_byname(pdev, "tx");
1901 cpsw->irqs_table[1] = irq;
1903 irq = platform_get_irq_byname(pdev, "misc");
1906 cpsw->misc_irq = irq;
1908 platform_set_drvdata(pdev, cpsw);
1909 /* This may be required here for child devices. */
1910 pm_runtime_enable(dev);
1912 /* Need to enable clocks with runtime PM api to access module
1915 ret = pm_runtime_get_sync(dev);
1917 pm_runtime_put_noidle(dev);
1918 pm_runtime_disable(dev);
1922 ret = cpsw_probe_dt(cpsw);
1926 soc = soc_device_match(cpsw_soc_devices);
1928 cpsw->quirk_irq = true;
1930 cpsw->rx_packet_max = rx_packet_max;
1931 cpsw->descs_pool_size = descs_pool_size;
1932 eth_random_addr(cpsw->base_mac);
1934 ret = cpsw_init_common(cpsw, ss_regs, ale_ageout,
1935 (u32 __force)ss_res->start + CPSW2_BD_OFFSET,
1940 cpsw->wr_regs = cpsw->version == CPSW_VERSION_1 ?
1941 ss_regs + CPSW1_WR_OFFSET :
1942 ss_regs + CPSW2_WR_OFFSET;
1944 ch = cpsw->quirk_irq ? 0 : 7;
1945 cpsw->txv[0].ch = cpdma_chan_create(cpsw->dma, ch, cpsw_tx_handler, 0);
1946 if (IS_ERR(cpsw->txv[0].ch)) {
1947 dev_err(dev, "error initializing tx dma channel\n");
1948 ret = PTR_ERR(cpsw->txv[0].ch);
1952 cpsw->rxv[0].ch = cpdma_chan_create(cpsw->dma, 0, cpsw_rx_handler, 1);
1953 if (IS_ERR(cpsw->rxv[0].ch)) {
1954 dev_err(dev, "error initializing rx dma channel\n");
1955 ret = PTR_ERR(cpsw->rxv[0].ch);
1958 cpsw_split_res(cpsw);
1961 ret = cpsw_create_ports(cpsw);
1963 goto clean_unregister_netdev;
1965 /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
1966 * MISC IRQs which are always kept disabled with this driver so
1967 * we will not request them.
1969 * If anyone wants to implement support for those, make sure to
1970 * first request and append them to irqs_table array.
1973 ret = devm_request_irq(dev, cpsw->irqs_table[0], cpsw_rx_interrupt,
1974 0, dev_name(dev), cpsw);
1976 dev_err(dev, "error attaching irq (%d)\n", ret);
1977 goto clean_unregister_netdev;
1980 ret = devm_request_irq(dev, cpsw->irqs_table[1], cpsw_tx_interrupt,
1981 0, dev_name(dev), cpsw);
1983 dev_err(dev, "error attaching irq (%d)\n", ret);
1984 goto clean_unregister_netdev;
1990 ret = devm_request_irq(dev, cpsw->misc_irq, cpsw_misc_interrupt,
1991 0, dev_name(&pdev->dev), cpsw);
1993 dev_err(dev, "error attaching misc irq (%d)\n", ret);
1994 goto clean_unregister_netdev;
1997 /* Enable misc CPTS evnt_pend IRQ */
1998 cpts_set_irqpoll(cpsw->cpts, false);
2001 ret = cpsw_register_notifiers(cpsw);
2003 goto clean_unregister_netdev;
2005 ret = cpsw_register_devlink(cpsw);
2007 goto clean_unregister_notifiers;
2009 ret = cpsw_register_ports(cpsw);
2011 goto clean_unregister_notifiers;
2013 dev_notice(dev, "initialized (regs %pa, pool size %d) hw_ver:%08X %d.%d (%d)\n",
2014 &ss_res->start, descs_pool_size,
2015 cpsw->version, CPSW_MAJOR_VERSION(cpsw->version),
2016 CPSW_MINOR_VERSION(cpsw->version),
2017 CPSW_RTL_VERSION(cpsw->version));
2019 pm_runtime_put(dev);
2023 clean_unregister_notifiers:
2024 cpsw_unregister_notifiers(cpsw);
2025 clean_unregister_netdev:
2026 cpsw_unregister_ports(cpsw);
2028 cpts_release(cpsw->cpts);
2029 cpdma_ctlr_destroy(cpsw->dma);
2031 cpsw_remove_dt(cpsw);
2032 pm_runtime_put_sync(dev);
2033 pm_runtime_disable(dev);
2037 static int cpsw_remove(struct platform_device *pdev)
2039 struct cpsw_common *cpsw = platform_get_drvdata(pdev);
2042 ret = pm_runtime_get_sync(&pdev->dev);
2044 pm_runtime_put_noidle(&pdev->dev);
2048 cpsw_unregister_notifiers(cpsw);
2049 cpsw_unregister_devlink(cpsw);
2050 cpsw_unregister_ports(cpsw);
2052 cpts_release(cpsw->cpts);
2053 cpdma_ctlr_destroy(cpsw->dma);
2054 cpsw_remove_dt(cpsw);
2055 pm_runtime_put_sync(&pdev->dev);
2056 pm_runtime_disable(&pdev->dev);
2060 static int __maybe_unused cpsw_suspend(struct device *dev)
2062 struct cpsw_common *cpsw = dev_get_drvdata(dev);
2067 for (i = 0; i < cpsw->data.slaves; i++) {
2068 struct net_device *ndev = cpsw->slaves[i].ndev;
2070 if (!(ndev && netif_running(ndev)))
2073 cpsw_ndo_stop(ndev);
2078 /* Select sleep pin state */
2079 pinctrl_pm_select_sleep_state(dev);
2084 static int __maybe_unused cpsw_resume(struct device *dev)
2086 struct cpsw_common *cpsw = dev_get_drvdata(dev);
2089 /* Select default pin state */
2090 pinctrl_pm_select_default_state(dev);
2092 /* shut up ASSERT_RTNL() warning in netif_set_real_num_tx/rx_queues */
2095 for (i = 0; i < cpsw->data.slaves; i++) {
2096 struct net_device *ndev = cpsw->slaves[i].ndev;
2098 if (!(ndev && netif_running(ndev)))
2101 cpsw_ndo_open(ndev);
2109 static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);
2111 static struct platform_driver cpsw_driver = {
2113 .name = "cpsw-switch",
2115 .of_match_table = cpsw_of_mtable,
2117 .probe = cpsw_probe,
2118 .remove = cpsw_remove,
2121 module_platform_driver(cpsw_driver);
2123 MODULE_LICENSE("GPL");
2124 MODULE_DESCRIPTION("TI CPSW switchdev Ethernet driver");