1 // SPDX-License-Identifier: GPL-2.0
3 * Texas Instruments Ethernet Switch Driver
5 * Copyright (C) 2012 Texas Instruments
9 #include <linux/kernel.h>
11 #include <linux/clk.h>
12 #include <linux/timer.h>
13 #include <linux/module.h>
14 #include <linux/platform_device.h>
15 #include <linux/irqreturn.h>
16 #include <linux/interrupt.h>
17 #include <linux/if_ether.h>
18 #include <linux/etherdevice.h>
19 #include <linux/netdevice.h>
20 #include <linux/net_tstamp.h>
21 #include <linux/phy.h>
22 #include <linux/phy/phy.h>
23 #include <linux/workqueue.h>
24 #include <linux/delay.h>
25 #include <linux/pm_runtime.h>
26 #include <linux/gpio/consumer.h>
28 #include <linux/of_mdio.h>
29 #include <linux/of_net.h>
30 #include <linux/of_device.h>
31 #include <linux/if_vlan.h>
32 #include <linux/kmemleak.h>
33 #include <linux/sys_soc.h>
34 #include <net/page_pool.h>
35 #include <linux/bpf.h>
36 #include <linux/bpf_trace.h>
38 #include <linux/pinctrl/consumer.h>
39 #include <net/pkt_cls.h>
43 #include "cpsw_priv.h"
46 #include "davinci_cpdma.h"
48 #include <net/pkt_sched.h>
50 static int debug_level;
51 module_param(debug_level, int, 0);
52 MODULE_PARM_DESC(debug_level, "cpsw debug level (NETIF_MSG bits)");
54 static int ale_ageout = 10;
55 module_param(ale_ageout, int, 0);
56 MODULE_PARM_DESC(ale_ageout, "cpsw ale ageout interval (seconds)");
58 static int rx_packet_max = CPSW_MAX_PACKET_SIZE;
59 module_param(rx_packet_max, int, 0);
60 MODULE_PARM_DESC(rx_packet_max, "maximum receive packet size (bytes)");
62 static int descs_pool_size = CPSW_CPDMA_DESCS_POOL_SIZE_DEFAULT;
63 module_param(descs_pool_size, int, 0444);
64 MODULE_PARM_DESC(descs_pool_size, "Number of CPDMA CPPI descriptors in pool");
66 #define for_each_slave(priv, func, arg...) \
68 struct cpsw_slave *slave; \
69 struct cpsw_common *cpsw = (priv)->cpsw; \
71 if (cpsw->data.dual_emac) \
72 (func)((cpsw)->slaves + priv->emac_port, ##arg);\
74 for (n = cpsw->data.slaves, \
75 slave = cpsw->slaves; \
77 (func)(slave++, ##arg); \
80 static int cpsw_slave_index_priv(struct cpsw_common *cpsw,
81 struct cpsw_priv *priv)
83 return cpsw->data.dual_emac ? priv->emac_port : cpsw->data.active_slave;
86 static int cpsw_get_slave_port(u32 slave_num)
91 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
92 __be16 proto, u16 vid);
94 static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
96 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
97 struct cpsw_ale *ale = cpsw->ale;
100 if (cpsw->data.dual_emac) {
103 /* Enabling promiscuous mode for one interface will be
104 * common for both the interface as the interface shares
105 * the same hardware resource.
107 for (i = 0; i < cpsw->data.slaves; i++)
108 if (cpsw->slaves[i].ndev->flags & IFF_PROMISC)
111 if (!enable && flag) {
113 dev_err(&ndev->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
118 cpsw_ale_control_set(ale, 0, ALE_BYPASS, 1);
120 dev_dbg(&ndev->dev, "promiscuity enabled\n");
123 cpsw_ale_control_set(ale, 0, ALE_BYPASS, 0);
124 dev_dbg(&ndev->dev, "promiscuity disabled\n");
128 unsigned long timeout = jiffies + HZ;
130 /* Disable Learn for all ports (host is port 0 and slaves are port 1 and up */
131 for (i = 0; i <= cpsw->data.slaves; i++) {
132 cpsw_ale_control_set(ale, i,
133 ALE_PORT_NOLEARN, 1);
134 cpsw_ale_control_set(ale, i,
135 ALE_PORT_NO_SA_UPDATE, 1);
138 /* Clear All Untouched entries */
139 cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
142 if (cpsw_ale_control_get(ale, 0, ALE_AGEOUT))
144 } while (time_after(timeout, jiffies));
145 cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
147 /* Clear all mcast from ALE */
148 cpsw_ale_flush_multicast(ale, ALE_ALL_PORTS, -1);
149 __hw_addr_ref_unsync_dev(&ndev->mc, ndev, NULL);
151 /* Flood All Unicast Packets to Host port */
152 cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 1);
153 dev_dbg(&ndev->dev, "promiscuity enabled\n");
155 /* Don't Flood All Unicast Packets to Host port */
156 cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 0);
158 /* Enable Learn for all ports (host is port 0 and slaves are port 1 and up */
159 for (i = 0; i <= cpsw->data.slaves; i++) {
160 cpsw_ale_control_set(ale, i,
161 ALE_PORT_NOLEARN, 0);
162 cpsw_ale_control_set(ale, i,
163 ALE_PORT_NO_SA_UPDATE, 0);
165 dev_dbg(&ndev->dev, "promiscuity disabled\n");
171 * cpsw_set_mc - adds multicast entry to the table if it's not added or deletes
172 * if it's not deleted
173 * @ndev: device to sync
174 * @addr: address to be added or deleted
175 * @vid: vlan id, if vid < 0 set/unset address for real device
176 * @add: add address if the flag is set or remove otherwise
178 static int cpsw_set_mc(struct net_device *ndev, const u8 *addr,
181 struct cpsw_priv *priv = netdev_priv(ndev);
182 struct cpsw_common *cpsw = priv->cpsw;
183 int mask, flags, ret;
186 if (cpsw->data.dual_emac)
187 vid = cpsw->slaves[priv->emac_port].port_vlan;
192 mask = cpsw->data.dual_emac ? ALE_PORT_HOST : ALE_ALL_PORTS;
193 flags = vid ? ALE_VLAN : 0;
196 ret = cpsw_ale_add_mcast(cpsw->ale, addr, mask, flags, vid, 0);
198 ret = cpsw_ale_del_mcast(cpsw->ale, addr, 0, flags, vid);
203 static int cpsw_update_vlan_mc(struct net_device *vdev, int vid, void *ctx)
205 struct addr_sync_ctx *sync_ctx = ctx;
206 struct netdev_hw_addr *ha;
207 int found = 0, ret = 0;
209 if (!vdev || !(vdev->flags & IFF_UP))
212 /* vlan address is relevant if its sync_cnt != 0 */
213 netdev_for_each_mc_addr(ha, vdev) {
214 if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
215 found = ha->sync_cnt;
221 sync_ctx->consumed++;
223 if (sync_ctx->flush) {
225 cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
230 ret = cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 1);
235 static int cpsw_add_mc_addr(struct net_device *ndev, const u8 *addr, int num)
237 struct addr_sync_ctx sync_ctx;
240 sync_ctx.consumed = 0;
241 sync_ctx.addr = addr;
242 sync_ctx.ndev = ndev;
245 ret = vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
246 if (sync_ctx.consumed < num && !ret)
247 ret = cpsw_set_mc(ndev, addr, -1, 1);
252 static int cpsw_del_mc_addr(struct net_device *ndev, const u8 *addr, int num)
254 struct addr_sync_ctx sync_ctx;
256 sync_ctx.consumed = 0;
257 sync_ctx.addr = addr;
258 sync_ctx.ndev = ndev;
261 vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
262 if (sync_ctx.consumed == num)
263 cpsw_set_mc(ndev, addr, -1, 0);
268 static int cpsw_purge_vlan_mc(struct net_device *vdev, int vid, void *ctx)
270 struct addr_sync_ctx *sync_ctx = ctx;
271 struct netdev_hw_addr *ha;
274 if (!vdev || !(vdev->flags & IFF_UP))
277 /* vlan address is relevant if its sync_cnt != 0 */
278 netdev_for_each_mc_addr(ha, vdev) {
279 if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
280 found = ha->sync_cnt;
288 sync_ctx->consumed++;
289 cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
293 static int cpsw_purge_all_mc(struct net_device *ndev, const u8 *addr, int num)
295 struct addr_sync_ctx sync_ctx;
297 sync_ctx.addr = addr;
298 sync_ctx.ndev = ndev;
299 sync_ctx.consumed = 0;
301 vlan_for_each(ndev, cpsw_purge_vlan_mc, &sync_ctx);
302 if (sync_ctx.consumed < num)
303 cpsw_set_mc(ndev, addr, -1, 0);
308 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
310 struct cpsw_priv *priv = netdev_priv(ndev);
311 struct cpsw_common *cpsw = priv->cpsw;
314 if (cpsw->data.dual_emac)
315 slave_port = priv->emac_port + 1;
317 if (ndev->flags & IFF_PROMISC) {
318 /* Enable promiscuous mode */
319 cpsw_set_promiscious(ndev, true);
320 cpsw_ale_set_allmulti(cpsw->ale, IFF_ALLMULTI, slave_port);
323 /* Disable promiscuous mode */
324 cpsw_set_promiscious(ndev, false);
327 /* Restore allmulti on vlans if necessary */
328 cpsw_ale_set_allmulti(cpsw->ale,
329 ndev->flags & IFF_ALLMULTI, slave_port);
331 /* add/remove mcast address either for real netdev or for vlan */
332 __hw_addr_ref_sync_dev(&ndev->mc, ndev, cpsw_add_mc_addr,
336 static unsigned int cpsw_rxbuf_total_len(unsigned int len)
338 len += CPSW_HEADROOM;
339 len += SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
341 return SKB_DATA_ALIGN(len);
344 static void cpsw_rx_handler(void *token, int len, int status)
346 struct page *new_page, *page = token;
347 void *pa = page_address(page);
348 struct cpsw_meta_xdp *xmeta = pa + CPSW_XMETA_OFFSET;
349 struct cpsw_common *cpsw = ndev_to_cpsw(xmeta->ndev);
350 int pkt_size = cpsw->rx_packet_max;
351 int ret = 0, port, ch = xmeta->ch;
352 int headroom = CPSW_HEADROOM;
353 struct net_device *ndev = xmeta->ndev;
354 struct cpsw_priv *priv;
355 struct page_pool *pool;
360 if (cpsw->data.dual_emac && status >= 0) {
361 port = CPDMA_RX_SOURCE_PORT(status);
363 ndev = cpsw->slaves[--port].ndev;
366 priv = netdev_priv(ndev);
367 pool = cpsw->page_pool[ch];
368 if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
369 /* In dual emac mode check for all interfaces */
370 if (cpsw->data.dual_emac && cpsw->usage_count &&
372 /* The packet received is for the interface which
373 * is already down and the other interface is up
374 * and running, instead of freeing which results
375 * in reducing of the number of rx descriptor in
376 * DMA engine, requeue page back to cpdma.
382 /* the interface is going down, pages are purged */
383 page_pool_recycle_direct(pool, page);
387 new_page = page_pool_dev_alloc_pages(pool);
388 if (unlikely(!new_page)) {
390 ndev->stats.rx_dropped++;
394 if (priv->xdp_prog) {
395 int headroom = CPSW_HEADROOM, size = len;
397 xdp_init_buff(&xdp, PAGE_SIZE, &priv->xdp_rxq[ch]);
398 if (status & CPDMA_RX_VLAN_ENCAP) {
399 headroom += CPSW_RX_VLAN_ENCAP_HDR_SIZE;
400 size -= CPSW_RX_VLAN_ENCAP_HDR_SIZE;
403 xdp_prepare_buff(&xdp, pa, headroom, size, false);
405 port = priv->emac_port + cpsw->data.dual_emac;
406 ret = cpsw_run_xdp(priv, ch, &xdp, page, port, &len);
407 if (ret != CPSW_XDP_PASS)
410 headroom = xdp.data - xdp.data_hard_start;
412 /* XDP prog can modify vlan tag, so can't use encap header */
413 status &= ~CPDMA_RX_VLAN_ENCAP;
416 /* pass skb to netstack if no XDP prog or returned XDP_PASS */
417 skb = build_skb(pa, cpsw_rxbuf_total_len(pkt_size));
419 ndev->stats.rx_dropped++;
420 page_pool_recycle_direct(pool, page);
424 skb_reserve(skb, headroom);
427 if (status & CPDMA_RX_VLAN_ENCAP)
428 cpsw_rx_vlan_encap(skb);
429 if (priv->rx_ts_enabled)
430 cpts_rx_timestamp(cpsw->cpts, skb);
431 skb->protocol = eth_type_trans(skb, ndev);
433 /* mark skb for recycling */
434 skb_mark_for_recycle(skb, page, pool);
435 netif_receive_skb(skb);
437 ndev->stats.rx_bytes += len;
438 ndev->stats.rx_packets++;
441 xmeta = page_address(new_page) + CPSW_XMETA_OFFSET;
445 dma = page_pool_get_dma_addr(new_page) + CPSW_HEADROOM;
446 ret = cpdma_chan_submit_mapped(cpsw->rxv[ch].ch, new_page, dma,
449 WARN_ON(ret == -ENOMEM);
450 page_pool_recycle_direct(pool, new_page);
454 static void _cpsw_adjust_link(struct cpsw_slave *slave,
455 struct cpsw_priv *priv, bool *link)
457 struct phy_device *phy = slave->phy;
460 struct cpsw_common *cpsw = priv->cpsw;
465 slave_port = cpsw_get_slave_port(slave->slave_num);
468 mac_control = CPSW_SL_CTL_GMII_EN;
470 if (phy->speed == 1000)
471 mac_control |= CPSW_SL_CTL_GIG;
473 mac_control |= CPSW_SL_CTL_FULLDUPLEX;
475 /* set speed_in input in case RMII mode is used in 100Mbps */
476 if (phy->speed == 100)
477 mac_control |= CPSW_SL_CTL_IFCTL_A;
478 /* in band mode only works in 10Mbps RGMII mode */
479 else if ((phy->speed == 10) && phy_interface_is_rgmii(phy))
480 mac_control |= CPSW_SL_CTL_EXT_EN; /* In Band mode */
483 mac_control |= CPSW_SL_CTL_RX_FLOW_EN;
486 mac_control |= CPSW_SL_CTL_TX_FLOW_EN;
488 if (mac_control != slave->mac_control)
489 cpsw_sl_ctl_set(slave->mac_sl, mac_control);
491 /* enable forwarding */
492 cpsw_ale_control_set(cpsw->ale, slave_port,
493 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
497 if (priv->shp_cfg_speed &&
498 priv->shp_cfg_speed != slave->phy->speed &&
499 !cpsw_shp_is_off(priv))
501 "Speed was changed, CBS shaper speeds are changed!");
504 /* disable forwarding */
505 cpsw_ale_control_set(cpsw->ale, slave_port,
506 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
508 cpsw_sl_wait_for_idle(slave->mac_sl, 100);
510 cpsw_sl_ctl_reset(slave->mac_sl);
513 if (mac_control != slave->mac_control)
514 phy_print_status(phy);
516 slave->mac_control = mac_control;
519 static void cpsw_adjust_link(struct net_device *ndev)
521 struct cpsw_priv *priv = netdev_priv(ndev);
522 struct cpsw_common *cpsw = priv->cpsw;
525 for_each_slave(priv, _cpsw_adjust_link, priv, &link);
528 if (cpsw_need_resplit(cpsw))
529 cpsw_split_res(cpsw);
531 netif_carrier_on(ndev);
532 if (netif_running(ndev))
533 netif_tx_wake_all_queues(ndev);
535 netif_carrier_off(ndev);
536 netif_tx_stop_all_queues(ndev);
540 static inline void cpsw_add_dual_emac_def_ale_entries(
541 struct cpsw_priv *priv, struct cpsw_slave *slave,
544 struct cpsw_common *cpsw = priv->cpsw;
545 u32 port_mask = 1 << slave_port | ALE_PORT_HOST;
547 if (cpsw->version == CPSW_VERSION_1)
548 slave_write(slave, slave->port_vlan, CPSW1_PORT_VLAN);
550 slave_write(slave, slave->port_vlan, CPSW2_PORT_VLAN);
551 cpsw_ale_add_vlan(cpsw->ale, slave->port_vlan, port_mask,
552 port_mask, port_mask, 0);
553 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
554 ALE_PORT_HOST, ALE_VLAN, slave->port_vlan, 0);
555 cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
556 HOST_PORT_NUM, ALE_VLAN |
557 ALE_SECURE, slave->port_vlan);
558 cpsw_ale_control_set(cpsw->ale, slave_port,
559 ALE_PORT_DROP_UNKNOWN_VLAN, 1);
562 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
565 struct phy_device *phy;
566 struct cpsw_common *cpsw = priv->cpsw;
568 cpsw_sl_reset(slave->mac_sl, 100);
569 cpsw_sl_ctl_reset(slave->mac_sl);
571 /* setup priority mapping */
572 cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_PRI_MAP,
573 RX_PRIORITY_MAPPING);
575 switch (cpsw->version) {
577 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
578 /* Increase RX FIFO size to 5 for supporting fullduplex
582 (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
583 CPSW_MAX_BLKS_RX, CPSW1_MAX_BLKS);
588 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
589 /* Increase RX FIFO size to 5 for supporting fullduplex
593 (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
594 CPSW_MAX_BLKS_RX, CPSW2_MAX_BLKS);
598 /* setup max packet size, and mac address */
599 cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_MAXLEN,
600 cpsw->rx_packet_max);
601 cpsw_set_slave_mac(slave, priv);
603 slave->mac_control = 0; /* no link yet */
605 slave_port = cpsw_get_slave_port(slave->slave_num);
607 if (cpsw->data.dual_emac)
608 cpsw_add_dual_emac_def_ale_entries(priv, slave, slave_port);
610 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
611 1 << slave_port, 0, 0, ALE_MCAST_FWD_2);
613 if (slave->data->phy_node) {
614 phy = of_phy_connect(priv->ndev, slave->data->phy_node,
615 &cpsw_adjust_link, 0, slave->data->phy_if);
617 dev_err(priv->dev, "phy \"%pOF\" not found on slave %d\n",
618 slave->data->phy_node,
623 phy = phy_connect(priv->ndev, slave->data->phy_id,
624 &cpsw_adjust_link, slave->data->phy_if);
627 "phy \"%s\" not found on slave %d, err %ld\n",
628 slave->data->phy_id, slave->slave_num,
636 phy_attached_info(slave->phy);
638 phy_start(slave->phy);
640 /* Configure GMII_SEL register */
641 if (!IS_ERR(slave->data->ifphy))
642 phy_set_mode_ext(slave->data->ifphy, PHY_MODE_ETHERNET,
643 slave->data->phy_if);
645 cpsw_phy_sel(cpsw->dev, slave->phy->interface,
649 static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)
651 struct cpsw_common *cpsw = priv->cpsw;
652 const int vlan = cpsw->data.default_vlan;
655 int unreg_mcast_mask;
657 reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
660 writel(vlan, &cpsw->host_port_regs->port_vlan);
662 for (i = 0; i < cpsw->data.slaves; i++)
663 slave_write(cpsw->slaves + i, vlan, reg);
665 if (priv->ndev->flags & IFF_ALLMULTI)
666 unreg_mcast_mask = ALE_ALL_PORTS;
668 unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
670 cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS,
671 ALE_ALL_PORTS, ALE_ALL_PORTS,
675 static void cpsw_init_host_port(struct cpsw_priv *priv)
679 struct cpsw_common *cpsw = priv->cpsw;
681 /* soft reset the controller and initialize ale */
682 soft_reset("cpsw", &cpsw->regs->soft_reset);
683 cpsw_ale_start(cpsw->ale);
685 /* switch to vlan unaware mode */
686 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_VLAN_AWARE,
687 CPSW_ALE_VLAN_AWARE);
688 control_reg = readl(&cpsw->regs->control);
689 control_reg |= CPSW_VLAN_AWARE | CPSW_RX_VLAN_ENCAP;
690 writel(control_reg, &cpsw->regs->control);
691 fifo_mode = (cpsw->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :
692 CPSW_FIFO_NORMAL_MODE;
693 writel(fifo_mode, &cpsw->host_port_regs->tx_in_ctl);
695 /* setup host port priority mapping */
696 writel_relaxed(CPDMA_TX_PRIORITY_MAP,
697 &cpsw->host_port_regs->cpdma_tx_pri_map);
698 writel_relaxed(0, &cpsw->host_port_regs->cpdma_rx_chan_map);
700 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
701 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
703 if (!cpsw->data.dual_emac) {
704 cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
706 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
707 ALE_PORT_HOST, 0, 0, ALE_MCAST_FWD_2);
711 static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_common *cpsw)
715 slave_port = cpsw_get_slave_port(slave->slave_num);
719 phy_stop(slave->phy);
720 phy_disconnect(slave->phy);
722 cpsw_ale_control_set(cpsw->ale, slave_port,
723 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
724 cpsw_sl_reset(slave->mac_sl, 100);
725 cpsw_sl_ctl_reset(slave->mac_sl);
728 static int cpsw_restore_vlans(struct net_device *vdev, int vid, void *arg)
730 struct cpsw_priv *priv = arg;
735 cpsw_ndo_vlan_rx_add_vid(priv->ndev, 0, vid);
739 /* restore resources after port reset */
740 static void cpsw_restore(struct cpsw_priv *priv)
742 /* restore vlan configurations */
743 vlan_for_each(priv->ndev, cpsw_restore_vlans, priv);
745 /* restore MQPRIO offload */
746 for_each_slave(priv, cpsw_mqprio_resume, priv);
748 /* restore CBS offload */
749 for_each_slave(priv, cpsw_cbs_resume, priv);
752 static int cpsw_ndo_open(struct net_device *ndev)
754 struct cpsw_priv *priv = netdev_priv(ndev);
755 struct cpsw_common *cpsw = priv->cpsw;
759 ret = pm_runtime_get_sync(cpsw->dev);
761 pm_runtime_put_noidle(cpsw->dev);
765 netif_carrier_off(ndev);
767 /* Notify the stack of the actual queue counts. */
768 ret = netif_set_real_num_tx_queues(ndev, cpsw->tx_ch_num);
770 dev_err(priv->dev, "cannot set real number of tx queues\n");
774 ret = netif_set_real_num_rx_queues(ndev, cpsw->rx_ch_num);
776 dev_err(priv->dev, "cannot set real number of rx queues\n");
782 dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
783 CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
784 CPSW_RTL_VERSION(reg));
786 /* Initialize host and slave ports */
787 if (!cpsw->usage_count)
788 cpsw_init_host_port(priv);
789 for_each_slave(priv, cpsw_slave_open, priv);
791 /* Add default VLAN */
792 if (!cpsw->data.dual_emac)
793 cpsw_add_default_vlan(priv);
795 cpsw_ale_add_vlan(cpsw->ale, cpsw->data.default_vlan,
796 ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0);
798 /* initialize shared resources for every ndev */
799 if (!cpsw->usage_count) {
800 /* disable priority elevation */
801 writel_relaxed(0, &cpsw->regs->ptype);
803 /* enable statistics collection only on all ports */
804 writel_relaxed(0x7, &cpsw->regs->stat_port_en);
806 /* Enable internal fifo flow control */
807 writel(0x7, &cpsw->regs->flow_control);
809 napi_enable(&cpsw->napi_rx);
810 napi_enable(&cpsw->napi_tx);
812 if (cpsw->tx_irq_disabled) {
813 cpsw->tx_irq_disabled = false;
814 enable_irq(cpsw->irqs_table[1]);
817 if (cpsw->rx_irq_disabled) {
818 cpsw->rx_irq_disabled = false;
819 enable_irq(cpsw->irqs_table[0]);
822 /* create rxqs for both infs in dual mac as they use same pool
823 * and must be destroyed together when no users.
825 ret = cpsw_create_xdp_rxqs(cpsw);
829 ret = cpsw_fill_rx_channels(priv);
834 if (cpts_register(cpsw->cpts))
835 dev_err(priv->dev, "error registering cpts device\n");
837 writel(0x10, &cpsw->wr_regs->misc_en);
843 /* Enable Interrupt pacing if configured */
844 if (cpsw->coal_intvl != 0) {
845 struct ethtool_coalesce coal;
847 coal.rx_coalesce_usecs = cpsw->coal_intvl;
848 cpsw_set_coalesce(ndev, &coal);
851 cpdma_ctlr_start(cpsw->dma);
852 cpsw_intr_enable(cpsw);
858 if (!cpsw->usage_count) {
859 cpdma_ctlr_stop(cpsw->dma);
860 cpsw_destroy_xdp_rxqs(cpsw);
863 for_each_slave(priv, cpsw_slave_stop, cpsw);
864 pm_runtime_put_sync(cpsw->dev);
865 netif_carrier_off(priv->ndev);
869 static int cpsw_ndo_stop(struct net_device *ndev)
871 struct cpsw_priv *priv = netdev_priv(ndev);
872 struct cpsw_common *cpsw = priv->cpsw;
874 cpsw_info(priv, ifdown, "shutting down cpsw device\n");
875 __hw_addr_ref_unsync_dev(&ndev->mc, ndev, cpsw_purge_all_mc);
876 netif_tx_stop_all_queues(priv->ndev);
877 netif_carrier_off(priv->ndev);
879 if (cpsw->usage_count <= 1) {
880 napi_disable(&cpsw->napi_rx);
881 napi_disable(&cpsw->napi_tx);
882 cpts_unregister(cpsw->cpts);
883 cpsw_intr_disable(cpsw);
884 cpdma_ctlr_stop(cpsw->dma);
885 cpsw_ale_stop(cpsw->ale);
886 cpsw_destroy_xdp_rxqs(cpsw);
888 for_each_slave(priv, cpsw_slave_stop, cpsw);
890 if (cpsw_need_resplit(cpsw))
891 cpsw_split_res(cpsw);
894 pm_runtime_put_sync(cpsw->dev);
898 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
899 struct net_device *ndev)
901 struct cpsw_priv *priv = netdev_priv(ndev);
902 struct cpsw_common *cpsw = priv->cpsw;
903 struct cpts *cpts = cpsw->cpts;
904 struct netdev_queue *txq;
905 struct cpdma_chan *txch;
908 if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
909 cpsw_err(priv, tx_err, "packet pad failed\n");
910 ndev->stats.tx_dropped++;
911 return NET_XMIT_DROP;
914 if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
915 priv->tx_ts_enabled && cpts_can_timestamp(cpts, skb))
916 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
918 q_idx = skb_get_queue_mapping(skb);
919 if (q_idx >= cpsw->tx_ch_num)
920 q_idx = q_idx % cpsw->tx_ch_num;
922 txch = cpsw->txv[q_idx].ch;
923 txq = netdev_get_tx_queue(ndev, q_idx);
924 skb_tx_timestamp(skb);
925 ret = cpdma_chan_submit(txch, skb, skb->data, skb->len,
926 priv->emac_port + cpsw->data.dual_emac);
927 if (unlikely(ret != 0)) {
928 cpsw_err(priv, tx_err, "desc submit failed\n");
932 /* If there is no more tx desc left free then we need to
933 * tell the kernel to stop sending us tx frames.
935 if (unlikely(!cpdma_check_free_tx_desc(txch))) {
936 netif_tx_stop_queue(txq);
938 /* Barrier, so that stop_queue visible to other cpus */
939 smp_mb__after_atomic();
941 if (cpdma_check_free_tx_desc(txch))
942 netif_tx_wake_queue(txq);
947 ndev->stats.tx_dropped++;
948 netif_tx_stop_queue(txq);
950 /* Barrier, so that stop_queue visible to other cpus */
951 smp_mb__after_atomic();
953 if (cpdma_check_free_tx_desc(txch))
954 netif_tx_wake_queue(txq);
956 return NETDEV_TX_BUSY;
959 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
961 struct cpsw_priv *priv = netdev_priv(ndev);
962 struct sockaddr *addr = (struct sockaddr *)p;
963 struct cpsw_common *cpsw = priv->cpsw;
968 if (!is_valid_ether_addr(addr->sa_data))
969 return -EADDRNOTAVAIL;
971 ret = pm_runtime_get_sync(cpsw->dev);
973 pm_runtime_put_noidle(cpsw->dev);
977 if (cpsw->data.dual_emac) {
978 vid = cpsw->slaves[priv->emac_port].port_vlan;
982 cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
984 cpsw_ale_add_ucast(cpsw->ale, addr->sa_data, HOST_PORT_NUM,
987 memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
988 memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
989 for_each_slave(priv, cpsw_set_slave_mac, priv);
991 pm_runtime_put(cpsw->dev);
996 static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
1000 int unreg_mcast_mask = 0;
1003 struct cpsw_common *cpsw = priv->cpsw;
1005 if (cpsw->data.dual_emac) {
1006 port_mask = (1 << (priv->emac_port + 1)) | ALE_PORT_HOST;
1008 mcast_mask = ALE_PORT_HOST;
1009 if (priv->ndev->flags & IFF_ALLMULTI)
1010 unreg_mcast_mask = mcast_mask;
1012 port_mask = ALE_ALL_PORTS;
1013 mcast_mask = port_mask;
1015 if (priv->ndev->flags & IFF_ALLMULTI)
1016 unreg_mcast_mask = ALE_ALL_PORTS;
1018 unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
1021 ret = cpsw_ale_add_vlan(cpsw->ale, vid, port_mask, 0, port_mask,
1026 ret = cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
1027 HOST_PORT_NUM, ALE_VLAN, vid);
1031 ret = cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
1032 mcast_mask, ALE_VLAN, vid, 0);
1034 goto clean_vlan_ucast;
1038 cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1039 HOST_PORT_NUM, ALE_VLAN, vid);
1041 cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1045 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1046 __be16 proto, u16 vid)
1048 struct cpsw_priv *priv = netdev_priv(ndev);
1049 struct cpsw_common *cpsw = priv->cpsw;
1052 if (vid == cpsw->data.default_vlan)
1055 ret = pm_runtime_get_sync(cpsw->dev);
1057 pm_runtime_put_noidle(cpsw->dev);
1061 if (cpsw->data.dual_emac) {
1062 /* In dual EMAC, reserved VLAN id should not be used for
1063 * creating VLAN interfaces as this can break the dual
1064 * EMAC port separation
1068 for (i = 0; i < cpsw->data.slaves; i++) {
1069 if (vid == cpsw->slaves[i].port_vlan) {
1076 dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1077 ret = cpsw_add_vlan_ale_entry(priv, vid);
1079 pm_runtime_put(cpsw->dev);
1083 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1084 __be16 proto, u16 vid)
1086 struct cpsw_priv *priv = netdev_priv(ndev);
1087 struct cpsw_common *cpsw = priv->cpsw;
1090 if (vid == cpsw->data.default_vlan)
1093 ret = pm_runtime_get_sync(cpsw->dev);
1095 pm_runtime_put_noidle(cpsw->dev);
1099 if (cpsw->data.dual_emac) {
1102 for (i = 0; i < cpsw->data.slaves; i++) {
1103 if (vid == cpsw->slaves[i].port_vlan)
1108 dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1109 ret = cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1110 ret |= cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1111 HOST_PORT_NUM, ALE_VLAN, vid);
1112 ret |= cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
1114 ret |= cpsw_ale_flush_multicast(cpsw->ale, ALE_PORT_HOST, vid);
1116 pm_runtime_put(cpsw->dev);
1120 static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n,
1121 struct xdp_frame **frames, u32 flags)
1123 struct cpsw_priv *priv = netdev_priv(ndev);
1124 struct cpsw_common *cpsw = priv->cpsw;
1125 struct xdp_frame *xdpf;
1126 int i, nxmit = 0, port;
1128 if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
1131 for (i = 0; i < n; i++) {
1133 if (xdpf->len < CPSW_MIN_PACKET_SIZE)
1136 port = priv->emac_port + cpsw->data.dual_emac;
1137 if (cpsw_xdp_tx_frame(priv, xdpf, NULL, port))
1145 #ifdef CONFIG_NET_POLL_CONTROLLER
1146 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1148 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1150 cpsw_intr_disable(cpsw);
1151 cpsw_rx_interrupt(cpsw->irqs_table[0], cpsw);
1152 cpsw_tx_interrupt(cpsw->irqs_table[1], cpsw);
1153 cpsw_intr_enable(cpsw);
1157 static const struct net_device_ops cpsw_netdev_ops = {
1158 .ndo_open = cpsw_ndo_open,
1159 .ndo_stop = cpsw_ndo_stop,
1160 .ndo_start_xmit = cpsw_ndo_start_xmit,
1161 .ndo_set_mac_address = cpsw_ndo_set_mac_address,
1162 .ndo_do_ioctl = cpsw_ndo_ioctl,
1163 .ndo_validate_addr = eth_validate_addr,
1164 .ndo_tx_timeout = cpsw_ndo_tx_timeout,
1165 .ndo_set_rx_mode = cpsw_ndo_set_rx_mode,
1166 .ndo_set_tx_maxrate = cpsw_ndo_set_tx_maxrate,
1167 #ifdef CONFIG_NET_POLL_CONTROLLER
1168 .ndo_poll_controller = cpsw_ndo_poll_controller,
1170 .ndo_vlan_rx_add_vid = cpsw_ndo_vlan_rx_add_vid,
1171 .ndo_vlan_rx_kill_vid = cpsw_ndo_vlan_rx_kill_vid,
1172 .ndo_setup_tc = cpsw_ndo_setup_tc,
1173 .ndo_bpf = cpsw_ndo_bpf,
1174 .ndo_xdp_xmit = cpsw_ndo_xdp_xmit,
1177 static void cpsw_get_drvinfo(struct net_device *ndev,
1178 struct ethtool_drvinfo *info)
1180 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1181 struct platform_device *pdev = to_platform_device(cpsw->dev);
1183 strlcpy(info->driver, "cpsw", sizeof(info->driver));
1184 strlcpy(info->version, "1.0", sizeof(info->version));
1185 strlcpy(info->bus_info, pdev->name, sizeof(info->bus_info));
1188 static int cpsw_set_pauseparam(struct net_device *ndev,
1189 struct ethtool_pauseparam *pause)
1191 struct cpsw_priv *priv = netdev_priv(ndev);
1194 priv->rx_pause = pause->rx_pause ? true : false;
1195 priv->tx_pause = pause->tx_pause ? true : false;
1197 for_each_slave(priv, _cpsw_adjust_link, priv, &link);
1201 static int cpsw_set_channels(struct net_device *ndev,
1202 struct ethtool_channels *chs)
1204 return cpsw_set_channels_common(ndev, chs, cpsw_rx_handler);
1207 static const struct ethtool_ops cpsw_ethtool_ops = {
1208 .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
1209 .get_drvinfo = cpsw_get_drvinfo,
1210 .get_msglevel = cpsw_get_msglevel,
1211 .set_msglevel = cpsw_set_msglevel,
1212 .get_link = ethtool_op_get_link,
1213 .get_ts_info = cpsw_get_ts_info,
1214 .get_coalesce = cpsw_get_coalesce,
1215 .set_coalesce = cpsw_set_coalesce,
1216 .get_sset_count = cpsw_get_sset_count,
1217 .get_strings = cpsw_get_strings,
1218 .get_ethtool_stats = cpsw_get_ethtool_stats,
1219 .get_pauseparam = cpsw_get_pauseparam,
1220 .set_pauseparam = cpsw_set_pauseparam,
1221 .get_wol = cpsw_get_wol,
1222 .set_wol = cpsw_set_wol,
1223 .get_regs_len = cpsw_get_regs_len,
1224 .get_regs = cpsw_get_regs,
1225 .begin = cpsw_ethtool_op_begin,
1226 .complete = cpsw_ethtool_op_complete,
1227 .get_channels = cpsw_get_channels,
1228 .set_channels = cpsw_set_channels,
1229 .get_link_ksettings = cpsw_get_link_ksettings,
1230 .set_link_ksettings = cpsw_set_link_ksettings,
1231 .get_eee = cpsw_get_eee,
1232 .set_eee = cpsw_set_eee,
1233 .nway_reset = cpsw_nway_reset,
1234 .get_ringparam = cpsw_get_ringparam,
1235 .set_ringparam = cpsw_set_ringparam,
1238 static int cpsw_probe_dt(struct cpsw_platform_data *data,
1239 struct platform_device *pdev)
1241 struct device_node *node = pdev->dev.of_node;
1242 struct device_node *slave_node;
1249 if (of_property_read_u32(node, "slaves", &prop)) {
1250 dev_err(&pdev->dev, "Missing slaves property in the DT.\n");
1253 data->slaves = prop;
1255 if (of_property_read_u32(node, "active_slave", &prop)) {
1256 dev_err(&pdev->dev, "Missing active_slave property in the DT.\n");
1259 data->active_slave = prop;
1261 data->slave_data = devm_kcalloc(&pdev->dev,
1263 sizeof(struct cpsw_slave_data),
1265 if (!data->slave_data)
1268 if (of_property_read_u32(node, "cpdma_channels", &prop)) {
1269 dev_err(&pdev->dev, "Missing cpdma_channels property in the DT.\n");
1272 data->channels = prop;
1274 if (of_property_read_u32(node, "bd_ram_size", &prop)) {
1275 dev_err(&pdev->dev, "Missing bd_ram_size property in the DT.\n");
1278 data->bd_ram_size = prop;
1280 if (of_property_read_u32(node, "mac_control", &prop)) {
1281 dev_err(&pdev->dev, "Missing mac_control property in the DT.\n");
1284 data->mac_control = prop;
1286 if (of_property_read_bool(node, "dual_emac"))
1287 data->dual_emac = true;
1290 * Populate all the child nodes here...
1292 ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
1293 /* We do not want to force this, as in some cases may not have child */
1295 dev_warn(&pdev->dev, "Doesn't have any child node\n");
1297 for_each_available_child_of_node(node, slave_node) {
1298 struct cpsw_slave_data *slave_data = data->slave_data + i;
1302 /* This is no slave child node, continue */
1303 if (!of_node_name_eq(slave_node, "slave"))
1306 slave_data->ifphy = devm_of_phy_get(&pdev->dev, slave_node,
1308 if (!IS_ENABLED(CONFIG_TI_CPSW_PHY_SEL) &&
1309 IS_ERR(slave_data->ifphy)) {
1310 ret = PTR_ERR(slave_data->ifphy);
1312 "%d: Error retrieving port phy: %d\n", i, ret);
1316 slave_data->slave_node = slave_node;
1317 slave_data->phy_node = of_parse_phandle(slave_node,
1319 parp = of_get_property(slave_node, "phy_id", &lenp);
1320 if (slave_data->phy_node) {
1322 "slave[%d] using phy-handle=\"%pOF\"\n",
1323 i, slave_data->phy_node);
1324 } else if (of_phy_is_fixed_link(slave_node)) {
1325 /* In the case of a fixed PHY, the DT node associated
1326 * to the PHY is the Ethernet MAC DT node.
1328 ret = of_phy_register_fixed_link(slave_node);
1330 if (ret != -EPROBE_DEFER)
1331 dev_err(&pdev->dev, "failed to register fixed-link phy: %d\n", ret);
1334 slave_data->phy_node = of_node_get(slave_node);
1337 struct device_node *mdio_node;
1338 struct platform_device *mdio;
1340 if (lenp != (sizeof(__be32) * 2)) {
1341 dev_err(&pdev->dev, "Invalid slave[%d] phy_id property\n", i);
1344 mdio_node = of_find_node_by_phandle(be32_to_cpup(parp));
1345 phyid = be32_to_cpup(parp+1);
1346 mdio = of_find_device_by_node(mdio_node);
1347 of_node_put(mdio_node);
1349 dev_err(&pdev->dev, "Missing mdio platform device\n");
1353 snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
1354 PHY_ID_FMT, mdio->name, phyid);
1355 put_device(&mdio->dev);
1358 "No slave[%d] phy_id, phy-handle, or fixed-link property\n",
1362 ret = of_get_phy_mode(slave_node, &slave_data->phy_if);
1364 dev_err(&pdev->dev, "Missing or malformed slave[%d] phy-mode property\n",
1370 ret = of_get_mac_address(slave_node, slave_data->mac_addr);
1372 ret = ti_cm_get_macid(&pdev->dev, i,
1373 slave_data->mac_addr);
1377 if (data->dual_emac) {
1378 if (of_property_read_u32(slave_node, "dual_emac_res_vlan",
1380 dev_err(&pdev->dev, "Missing dual_emac_res_vlan in DT.\n");
1381 slave_data->dual_emac_res_vlan = i+1;
1382 dev_err(&pdev->dev, "Using %d as Reserved VLAN for %d slave\n",
1383 slave_data->dual_emac_res_vlan, i);
1385 slave_data->dual_emac_res_vlan = prop;
1390 if (i == data->slaves) {
1399 of_node_put(slave_node);
1403 static void cpsw_remove_dt(struct platform_device *pdev)
1405 struct cpsw_common *cpsw = platform_get_drvdata(pdev);
1406 struct cpsw_platform_data *data = &cpsw->data;
1407 struct device_node *node = pdev->dev.of_node;
1408 struct device_node *slave_node;
1411 for_each_available_child_of_node(node, slave_node) {
1412 struct cpsw_slave_data *slave_data = &data->slave_data[i];
1414 if (!of_node_name_eq(slave_node, "slave"))
1417 if (of_phy_is_fixed_link(slave_node))
1418 of_phy_deregister_fixed_link(slave_node);
1420 of_node_put(slave_data->phy_node);
1423 if (i == data->slaves) {
1424 of_node_put(slave_node);
1429 of_platform_depopulate(&pdev->dev);
1432 static int cpsw_probe_dual_emac(struct cpsw_priv *priv)
1434 struct cpsw_common *cpsw = priv->cpsw;
1435 struct cpsw_platform_data *data = &cpsw->data;
1436 struct net_device *ndev;
1437 struct cpsw_priv *priv_sl2;
1440 ndev = devm_alloc_etherdev_mqs(cpsw->dev, sizeof(struct cpsw_priv),
1441 CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);
1443 dev_err(cpsw->dev, "cpsw: error allocating net_device\n");
1447 priv_sl2 = netdev_priv(ndev);
1448 priv_sl2->cpsw = cpsw;
1449 priv_sl2->ndev = ndev;
1450 priv_sl2->dev = &ndev->dev;
1451 priv_sl2->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1453 if (is_valid_ether_addr(data->slave_data[1].mac_addr)) {
1454 memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,
1456 dev_info(cpsw->dev, "cpsw: Detected MACID = %pM\n",
1457 priv_sl2->mac_addr);
1459 eth_random_addr(priv_sl2->mac_addr);
1460 dev_info(cpsw->dev, "cpsw: Random MACID = %pM\n",
1461 priv_sl2->mac_addr);
1463 memcpy(ndev->dev_addr, priv_sl2->mac_addr, ETH_ALEN);
1465 priv_sl2->emac_port = 1;
1466 cpsw->slaves[1].ndev = ndev;
1467 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
1469 ndev->netdev_ops = &cpsw_netdev_ops;
1470 ndev->ethtool_ops = &cpsw_ethtool_ops;
1472 /* register the network device */
1473 SET_NETDEV_DEV(ndev, cpsw->dev);
1474 ndev->dev.of_node = cpsw->slaves[1].data->slave_node;
1475 ret = register_netdev(ndev);
1477 dev_err(cpsw->dev, "cpsw: error registering net device\n");
1482 static const struct of_device_id cpsw_of_mtable[] = {
1483 { .compatible = "ti,cpsw"},
1484 { .compatible = "ti,am335x-cpsw"},
1485 { .compatible = "ti,am4372-cpsw"},
1486 { .compatible = "ti,dra7-cpsw"},
1489 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
1491 static const struct soc_device_attribute cpsw_soc_devices[] = {
1492 { .family = "AM33xx", .revision = "ES1.0"},
1496 static int cpsw_probe(struct platform_device *pdev)
1498 struct device *dev = &pdev->dev;
1500 struct cpsw_platform_data *data;
1501 struct net_device *ndev;
1502 struct cpsw_priv *priv;
1503 void __iomem *ss_regs;
1504 struct resource *ss_res;
1505 struct gpio_descs *mode;
1506 const struct soc_device_attribute *soc;
1507 struct cpsw_common *cpsw;
1511 cpsw = devm_kzalloc(dev, sizeof(struct cpsw_common), GFP_KERNEL);
1515 platform_set_drvdata(pdev, cpsw);
1516 cpsw_slave_index = cpsw_slave_index_priv;
1520 mode = devm_gpiod_get_array_optional(dev, "mode", GPIOD_OUT_LOW);
1522 ret = PTR_ERR(mode);
1523 dev_err(dev, "gpio request failed, ret %d\n", ret);
1527 clk = devm_clk_get(dev, "fck");
1530 dev_err(dev, "fck is not found %d\n", ret);
1533 cpsw->bus_freq_mhz = clk_get_rate(clk) / 1000000;
1535 ss_regs = devm_platform_get_and_ioremap_resource(pdev, 0, &ss_res);
1536 if (IS_ERR(ss_regs))
1537 return PTR_ERR(ss_regs);
1538 cpsw->regs = ss_regs;
1540 cpsw->wr_regs = devm_platform_ioremap_resource(pdev, 1);
1541 if (IS_ERR(cpsw->wr_regs))
1542 return PTR_ERR(cpsw->wr_regs);
1545 irq = platform_get_irq(pdev, 1);
1548 cpsw->irqs_table[0] = irq;
1551 irq = platform_get_irq(pdev, 2);
1554 cpsw->irqs_table[1] = irq;
1557 irq = platform_get_irq(pdev, 3);
1560 cpsw->misc_irq = irq;
1563 * This may be required here for child devices.
1565 pm_runtime_enable(dev);
1567 /* Need to enable clocks with runtime PM api to access module
1570 ret = pm_runtime_get_sync(dev);
1572 pm_runtime_put_noidle(dev);
1573 goto clean_runtime_disable_ret;
1576 ret = cpsw_probe_dt(&cpsw->data, pdev);
1580 soc = soc_device_match(cpsw_soc_devices);
1582 cpsw->quirk_irq = true;
1585 cpsw->slaves = devm_kcalloc(dev,
1586 data->slaves, sizeof(struct cpsw_slave),
1588 if (!cpsw->slaves) {
1593 cpsw->rx_packet_max = max(rx_packet_max, CPSW_MAX_PACKET_SIZE);
1594 cpsw->descs_pool_size = descs_pool_size;
1596 ret = cpsw_init_common(cpsw, ss_regs, ale_ageout,
1597 ss_res->start + CPSW2_BD_OFFSET,
1602 ch = cpsw->quirk_irq ? 0 : 7;
1603 cpsw->txv[0].ch = cpdma_chan_create(cpsw->dma, ch, cpsw_tx_handler, 0);
1604 if (IS_ERR(cpsw->txv[0].ch)) {
1605 dev_err(dev, "error initializing tx dma channel\n");
1606 ret = PTR_ERR(cpsw->txv[0].ch);
1610 cpsw->rxv[0].ch = cpdma_chan_create(cpsw->dma, 0, cpsw_rx_handler, 1);
1611 if (IS_ERR(cpsw->rxv[0].ch)) {
1612 dev_err(dev, "error initializing rx dma channel\n");
1613 ret = PTR_ERR(cpsw->rxv[0].ch);
1616 cpsw_split_res(cpsw);
1619 ndev = devm_alloc_etherdev_mqs(dev, sizeof(struct cpsw_priv),
1620 CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);
1622 dev_err(dev, "error allocating net_device\n");
1627 priv = netdev_priv(ndev);
1631 priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1632 priv->emac_port = 0;
1634 if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {
1635 memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
1636 dev_info(dev, "Detected MACID = %pM\n", priv->mac_addr);
1638 eth_random_addr(priv->mac_addr);
1639 dev_info(dev, "Random MACID = %pM\n", priv->mac_addr);
1642 memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
1644 cpsw->slaves[0].ndev = ndev;
1646 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
1648 ndev->netdev_ops = &cpsw_netdev_ops;
1649 ndev->ethtool_ops = &cpsw_ethtool_ops;
1650 netif_napi_add(ndev, &cpsw->napi_rx,
1651 cpsw->quirk_irq ? cpsw_rx_poll : cpsw_rx_mq_poll,
1653 netif_tx_napi_add(ndev, &cpsw->napi_tx,
1654 cpsw->quirk_irq ? cpsw_tx_poll : cpsw_tx_mq_poll,
1657 /* register the network device */
1658 SET_NETDEV_DEV(ndev, dev);
1659 ndev->dev.of_node = cpsw->slaves[0].data->slave_node;
1660 ret = register_netdev(ndev);
1662 dev_err(dev, "error registering net device\n");
1667 if (cpsw->data.dual_emac) {
1668 ret = cpsw_probe_dual_emac(priv);
1670 cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
1671 goto clean_unregister_netdev_ret;
1675 /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
1676 * MISC IRQs which are always kept disabled with this driver so
1677 * we will not request them.
1679 * If anyone wants to implement support for those, make sure to
1680 * first request and append them to irqs_table array.
1682 ret = devm_request_irq(dev, cpsw->irqs_table[0], cpsw_rx_interrupt,
1683 0, dev_name(dev), cpsw);
1685 dev_err(dev, "error attaching irq (%d)\n", ret);
1686 goto clean_unregister_netdev_ret;
1690 ret = devm_request_irq(dev, cpsw->irqs_table[1], cpsw_tx_interrupt,
1691 0, dev_name(&pdev->dev), cpsw);
1693 dev_err(dev, "error attaching irq (%d)\n", ret);
1694 goto clean_unregister_netdev_ret;
1700 ret = devm_request_irq(&pdev->dev, cpsw->misc_irq, cpsw_misc_interrupt,
1701 0, dev_name(&pdev->dev), cpsw);
1703 dev_err(dev, "error attaching misc irq (%d)\n", ret);
1704 goto clean_unregister_netdev_ret;
1707 /* Enable misc CPTS evnt_pend IRQ */
1708 cpts_set_irqpoll(cpsw->cpts, false);
1711 cpsw_notice(priv, probe,
1712 "initialized device (regs %pa, irq %d, pool size %d)\n",
1713 &ss_res->start, cpsw->irqs_table[0], descs_pool_size);
1715 pm_runtime_put(&pdev->dev);
1719 clean_unregister_netdev_ret:
1720 unregister_netdev(ndev);
1722 cpts_release(cpsw->cpts);
1723 cpdma_ctlr_destroy(cpsw->dma);
1725 cpsw_remove_dt(pdev);
1726 pm_runtime_put_sync(&pdev->dev);
1727 clean_runtime_disable_ret:
1728 pm_runtime_disable(&pdev->dev);
1732 static int cpsw_remove(struct platform_device *pdev)
1734 struct cpsw_common *cpsw = platform_get_drvdata(pdev);
1737 ret = pm_runtime_get_sync(&pdev->dev);
1739 pm_runtime_put_noidle(&pdev->dev);
1743 for (i = 0; i < cpsw->data.slaves; i++)
1744 if (cpsw->slaves[i].ndev)
1745 unregister_netdev(cpsw->slaves[i].ndev);
1747 cpts_release(cpsw->cpts);
1748 cpdma_ctlr_destroy(cpsw->dma);
1749 cpsw_remove_dt(pdev);
1750 pm_runtime_put_sync(&pdev->dev);
1751 pm_runtime_disable(&pdev->dev);
1755 #ifdef CONFIG_PM_SLEEP
1756 static int cpsw_suspend(struct device *dev)
1758 struct cpsw_common *cpsw = dev_get_drvdata(dev);
1763 for (i = 0; i < cpsw->data.slaves; i++)
1764 if (cpsw->slaves[i].ndev)
1765 if (netif_running(cpsw->slaves[i].ndev))
1766 cpsw_ndo_stop(cpsw->slaves[i].ndev);
1770 /* Select sleep pin state */
1771 pinctrl_pm_select_sleep_state(dev);
1776 static int cpsw_resume(struct device *dev)
1778 struct cpsw_common *cpsw = dev_get_drvdata(dev);
1781 /* Select default pin state */
1782 pinctrl_pm_select_default_state(dev);
1784 /* shut up ASSERT_RTNL() warning in netif_set_real_num_tx/rx_queues */
1787 for (i = 0; i < cpsw->data.slaves; i++)
1788 if (cpsw->slaves[i].ndev)
1789 if (netif_running(cpsw->slaves[i].ndev))
1790 cpsw_ndo_open(cpsw->slaves[i].ndev);
1798 static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);
1800 static struct platform_driver cpsw_driver = {
1804 .of_match_table = cpsw_of_mtable,
1806 .probe = cpsw_probe,
1807 .remove = cpsw_remove,
1810 module_platform_driver(cpsw_driver);
1812 MODULE_LICENSE("GPL");
1813 MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>");
1814 MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>");
1815 MODULE_DESCRIPTION("TI CPSW Ethernet driver");