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1// SPDX-License-Identifier: GPL-2.02/*3 * Texas Instruments Ethernet Switch Driver4 *5 * Copyright (C) 2012 Texas Instruments6 *7 */8 9#include <linux/kernel.h>10#include <linux/io.h>11#include <linux/clk.h>12#include <linux/timer.h>13#include <linux/module.h>14#include <linux/platform_device.h>15#include <linux/irqreturn.h>16#include <linux/interrupt.h>17#include <linux/if_ether.h>18#include <linux/etherdevice.h>19#include <linux/netdevice.h>20#include <linux/net_tstamp.h>21#include <linux/phy.h>22#include <linux/phy/phy.h>23#include <linux/workqueue.h>24#include <linux/delay.h>25#include <linux/pm_runtime.h>26#include <linux/gpio/consumer.h>27#include <linux/of.h>28#include <linux/of_mdio.h>29#include <linux/of_net.h>30#include <linux/of_platform.h>31#include <linux/if_vlan.h>32#include <linux/kmemleak.h>33#include <linux/sys_soc.h>34#include <net/page_pool/helpers.h>35#include <linux/bpf.h>36#include <linux/bpf_trace.h>37 38#include <linux/pinctrl/consumer.h>39#include <net/pkt_cls.h>40 41#include "cpsw.h"42#include "cpsw_ale.h"43#include "cpsw_priv.h"44#include "cpsw_sl.h"45#include "cpts.h"46#include "davinci_cpdma.h"47 48#include <net/pkt_sched.h>49 50static int debug_level;51module_param(debug_level, int, 0);52MODULE_PARM_DESC(debug_level, "cpsw debug level (NETIF_MSG bits)");53 54static int ale_ageout = 10;55module_param(ale_ageout, int, 0);56MODULE_PARM_DESC(ale_ageout, "cpsw ale ageout interval (seconds)");57 58static int rx_packet_max = CPSW_MAX_PACKET_SIZE;59module_param(rx_packet_max, int, 0);60MODULE_PARM_DESC(rx_packet_max, "maximum receive packet size (bytes)");61 62static int descs_pool_size = CPSW_CPDMA_DESCS_POOL_SIZE_DEFAULT;63module_param(descs_pool_size, int, 0444);64MODULE_PARM_DESC(descs_pool_size, "Number of CPDMA CPPI descriptors in pool");65 66#define for_each_slave(priv, func, arg...) \67 do { \68 struct cpsw_slave *slave; \69 struct cpsw_common *cpsw = (priv)->cpsw; \70 int n; \71 if (cpsw->data.dual_emac) \72 (func)((cpsw)->slaves + priv->emac_port, ##arg);\73 else \74 for (n = cpsw->data.slaves, \75 slave = cpsw->slaves; \76 n; n--) \77 (func)(slave++, ##arg); \78 } while (0)79 80static int cpsw_slave_index_priv(struct cpsw_common *cpsw,81 struct cpsw_priv *priv)82{83 return cpsw->data.dual_emac ? priv->emac_port : cpsw->data.active_slave;84}85 86static int cpsw_get_slave_port(u32 slave_num)87{88 return slave_num + 1;89}90 91static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,92 __be16 proto, u16 vid);93 94static void cpsw_set_promiscious(struct net_device *ndev, bool enable)95{96 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);97 struct cpsw_ale *ale = cpsw->ale;98 int i;99 100 if (cpsw->data.dual_emac) {101 bool flag = false;102 103 /* Enabling promiscuous mode for one interface will be104 * common for both the interface as the interface shares105 * the same hardware resource.106 */107 for (i = 0; i < cpsw->data.slaves; i++)108 if (cpsw->slaves[i].ndev->flags & IFF_PROMISC)109 flag = true;110 111 if (!enable && flag) {112 enable = true;113 dev_err(&ndev->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");114 }115 116 if (enable) {117 /* Enable Bypass */118 cpsw_ale_control_set(ale, 0, ALE_BYPASS, 1);119 120 dev_dbg(&ndev->dev, "promiscuity enabled\n");121 } else {122 /* Disable Bypass */123 cpsw_ale_control_set(ale, 0, ALE_BYPASS, 0);124 dev_dbg(&ndev->dev, "promiscuity disabled\n");125 }126 } else {127 if (enable) {128 unsigned long timeout = jiffies + HZ;129 130 /* 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);136 }137 138 /* Clear All Untouched entries */139 cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);140 do {141 cpu_relax();142 if (cpsw_ale_control_get(ale, 0, ALE_AGEOUT))143 break;144 } while (time_after(timeout, jiffies));145 cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);146 147 /* 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);150 151 /* 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");154 } else {155 /* Don't Flood All Unicast Packets to Host port */156 cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 0);157 158 /* Enable Learn for all ports (host is port 0 and slaves are port 1 and up */159 for (i = 0; i <= cpsw->data.slaves; i++) {160 cpsw_ale_control_set(ale, i,161 ALE_PORT_NOLEARN, 0);162 cpsw_ale_control_set(ale, i,163 ALE_PORT_NO_SA_UPDATE, 0);164 }165 dev_dbg(&ndev->dev, "promiscuity disabled\n");166 }167 }168}169 170/**171 * cpsw_set_mc - adds multicast entry to the table if it's not added or deletes172 * if it's not deleted173 * @ndev: device to sync174 * @addr: address to be added or deleted175 * @vid: vlan id, if vid < 0 set/unset address for real device176 * @add: add address if the flag is set or remove otherwise177 */178static int cpsw_set_mc(struct net_device *ndev, const u8 *addr,179 int vid, int add)180{181 struct cpsw_priv *priv = netdev_priv(ndev);182 struct cpsw_common *cpsw = priv->cpsw;183 int mask, flags, ret;184 185 if (vid < 0) {186 if (cpsw->data.dual_emac)187 vid = cpsw->slaves[priv->emac_port].port_vlan;188 else189 vid = 0;190 }191 192 mask = cpsw->data.dual_emac ? ALE_PORT_HOST : ALE_ALL_PORTS;193 flags = vid ? ALE_VLAN : 0;194 195 if (add)196 ret = cpsw_ale_add_mcast(cpsw->ale, addr, mask, flags, vid, 0);197 else198 ret = cpsw_ale_del_mcast(cpsw->ale, addr, 0, flags, vid);199 200 return ret;201}202 203static int cpsw_update_vlan_mc(struct net_device *vdev, int vid, void *ctx)204{205 struct addr_sync_ctx *sync_ctx = ctx;206 struct netdev_hw_addr *ha;207 int found = 0, ret = 0;208 209 if (!vdev || !(vdev->flags & IFF_UP))210 return 0;211 212 /* 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;216 break;217 }218 }219 220 if (found)221 sync_ctx->consumed++;222 223 if (sync_ctx->flush) {224 if (!found)225 cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);226 return 0;227 }228 229 if (found)230 ret = cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 1);231 232 return ret;233}234 235static int cpsw_add_mc_addr(struct net_device *ndev, const u8 *addr, int num)236{237 struct addr_sync_ctx sync_ctx;238 int ret;239 240 sync_ctx.consumed = 0;241 sync_ctx.addr = addr;242 sync_ctx.ndev = ndev;243 sync_ctx.flush = 0;244 245 ret = vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);246 if (sync_ctx.consumed < num && !ret)247 ret = cpsw_set_mc(ndev, addr, -1, 1);248 249 return ret;250}251 252static int cpsw_del_mc_addr(struct net_device *ndev, const u8 *addr, int num)253{254 struct addr_sync_ctx sync_ctx;255 256 sync_ctx.consumed = 0;257 sync_ctx.addr = addr;258 sync_ctx.ndev = ndev;259 sync_ctx.flush = 1;260 261 vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);262 if (sync_ctx.consumed == num)263 cpsw_set_mc(ndev, addr, -1, 0);264 265 return 0;266}267 268static int cpsw_purge_vlan_mc(struct net_device *vdev, int vid, void *ctx)269{270 struct addr_sync_ctx *sync_ctx = ctx;271 struct netdev_hw_addr *ha;272 int found = 0;273 274 if (!vdev || !(vdev->flags & IFF_UP))275 return 0;276 277 /* 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;281 break;282 }283 }284 285 if (!found)286 return 0;287 288 sync_ctx->consumed++;289 cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);290 return 0;291}292 293static int cpsw_purge_all_mc(struct net_device *ndev, const u8 *addr, int num)294{295 struct addr_sync_ctx sync_ctx;296 297 sync_ctx.addr = addr;298 sync_ctx.ndev = ndev;299 sync_ctx.consumed = 0;300 301 vlan_for_each(ndev, cpsw_purge_vlan_mc, &sync_ctx);302 if (sync_ctx.consumed < num)303 cpsw_set_mc(ndev, addr, -1, 0);304 305 return 0;306}307 308static void cpsw_ndo_set_rx_mode(struct net_device *ndev)309{310 struct cpsw_priv *priv = netdev_priv(ndev);311 struct cpsw_common *cpsw = priv->cpsw;312 int slave_port = -1;313 314 if (cpsw->data.dual_emac)315 slave_port = priv->emac_port + 1;316 317 if (ndev->flags & IFF_PROMISC) {318 /* Enable promiscuous mode */319 cpsw_set_promiscious(ndev, true);320 cpsw_ale_set_allmulti(cpsw->ale, IFF_ALLMULTI, slave_port);321 return;322 } else {323 /* Disable promiscuous mode */324 cpsw_set_promiscious(ndev, false);325 }326 327 /* Restore allmulti on vlans if necessary */328 cpsw_ale_set_allmulti(cpsw->ale,329 ndev->flags & IFF_ALLMULTI, slave_port);330 331 /* add/remove mcast address either for real netdev or for vlan */332 __hw_addr_ref_sync_dev(&ndev->mc, ndev, cpsw_add_mc_addr,333 cpsw_del_mc_addr);334}335 336static unsigned int cpsw_rxbuf_total_len(unsigned int len)337{338 len += CPSW_HEADROOM_NA;339 len += SKB_DATA_ALIGN(sizeof(struct skb_shared_info));340 341 return SKB_DATA_ALIGN(len);342}343 344static void cpsw_rx_handler(void *token, int len, int status)345{346 struct page *new_page, *page = token;347 void *pa = page_address(page);348 struct cpsw_meta_xdp *xmeta = pa + CPSW_XMETA_OFFSET;349 struct cpsw_common *cpsw = ndev_to_cpsw(xmeta->ndev);350 int pkt_size = cpsw->rx_packet_max;351 int ret = 0, port, ch = xmeta->ch;352 int headroom = CPSW_HEADROOM_NA;353 struct net_device *ndev = xmeta->ndev;354 struct cpsw_priv *priv;355 struct page_pool *pool;356 struct sk_buff *skb;357 struct xdp_buff xdp;358 dma_addr_t dma;359 360 if (cpsw->data.dual_emac && status >= 0) {361 port = CPDMA_RX_SOURCE_PORT(status);362 if (port)363 ndev = cpsw->slaves[--port].ndev;364 }365 366 priv = netdev_priv(ndev);367 pool = cpsw->page_pool[ch];368 if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {369 /* In dual emac mode check for all interfaces */370 if (cpsw->data.dual_emac && cpsw->usage_count &&371 (status >= 0)) {372 /* The packet received is for the interface which373 * is already down and the other interface is up374 * and running, instead of freeing which results375 * in reducing of the number of rx descriptor in376 * DMA engine, requeue page back to cpdma.377 */378 new_page = page;379 goto requeue;380 }381 382 /* the interface is going down, pages are purged */383 page_pool_recycle_direct(pool, page);384 return;385 }386 387 new_page = page_pool_dev_alloc_pages(pool);388 if (unlikely(!new_page)) {389 new_page = page;390 ndev->stats.rx_dropped++;391 goto requeue;392 }393 394 if (priv->xdp_prog) {395 int size = len;396 397 xdp_init_buff(&xdp, PAGE_SIZE, &priv->xdp_rxq[ch]);398 if (status & CPDMA_RX_VLAN_ENCAP) {399 headroom += CPSW_RX_VLAN_ENCAP_HDR_SIZE;400 size -= CPSW_RX_VLAN_ENCAP_HDR_SIZE;401 }402 403 xdp_prepare_buff(&xdp, pa, headroom, size, false);404 405 port = priv->emac_port + cpsw->data.dual_emac;406 ret = cpsw_run_xdp(priv, ch, &xdp, page, port, &len);407 if (ret != CPSW_XDP_PASS)408 goto requeue;409 410 headroom = xdp.data - xdp.data_hard_start;411 412 /* XDP prog can modify vlan tag, so can't use encap header */413 status &= ~CPDMA_RX_VLAN_ENCAP;414 }415 416 /* pass skb to netstack if no XDP prog or returned XDP_PASS */417 skb = build_skb(pa, cpsw_rxbuf_total_len(pkt_size));418 if (!skb) {419 ndev->stats.rx_dropped++;420 page_pool_recycle_direct(pool, page);421 goto requeue;422 }423 424 skb_reserve(skb, headroom);425 skb_put(skb, len);426 skb->dev = ndev;427 if (status & CPDMA_RX_VLAN_ENCAP)428 cpsw_rx_vlan_encap(skb);429 if (priv->rx_ts_enabled)430 cpts_rx_timestamp(cpsw->cpts, skb);431 skb->protocol = eth_type_trans(skb, ndev);432 433 /* mark skb for recycling */434 skb_mark_for_recycle(skb);435 netif_receive_skb(skb);436 437 ndev->stats.rx_bytes += len;438 ndev->stats.rx_packets++;439 440requeue:441 xmeta = page_address(new_page) + CPSW_XMETA_OFFSET;442 xmeta->ndev = ndev;443 xmeta->ch = ch;444 445 dma = page_pool_get_dma_addr(new_page) + CPSW_HEADROOM_NA;446 ret = cpdma_chan_submit_mapped(cpsw->rxv[ch].ch, new_page, dma,447 pkt_size, 0);448 if (ret < 0) {449 WARN_ON(ret == -ENOMEM);450 page_pool_recycle_direct(pool, new_page);451 }452}453 454static void _cpsw_adjust_link(struct cpsw_slave *slave,455 struct cpsw_priv *priv, bool *link)456{457 struct phy_device *phy = slave->phy;458 u32 mac_control = 0;459 u32 slave_port;460 struct cpsw_common *cpsw = priv->cpsw;461 462 if (!phy)463 return;464 465 slave_port = cpsw_get_slave_port(slave->slave_num);466 467 if (phy->link) {468 mac_control = CPSW_SL_CTL_GMII_EN;469 470 if (phy->speed == 1000)471 mac_control |= CPSW_SL_CTL_GIG;472 if (phy->duplex)473 mac_control |= CPSW_SL_CTL_FULLDUPLEX;474 475 /* 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 */481 482 if (priv->rx_pause)483 mac_control |= CPSW_SL_CTL_RX_FLOW_EN;484 485 if (priv->tx_pause)486 mac_control |= CPSW_SL_CTL_TX_FLOW_EN;487 488 if (mac_control != slave->mac_control)489 cpsw_sl_ctl_set(slave->mac_sl, mac_control);490 491 /* enable forwarding */492 cpsw_ale_control_set(cpsw->ale, slave_port,493 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);494 495 *link = true;496 497 if (priv->shp_cfg_speed &&498 priv->shp_cfg_speed != slave->phy->speed &&499 !cpsw_shp_is_off(priv))500 dev_warn(priv->dev,501 "Speed was changed, CBS shaper speeds are changed!");502 } else {503 mac_control = 0;504 /* disable forwarding */505 cpsw_ale_control_set(cpsw->ale, slave_port,506 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);507 508 cpsw_sl_wait_for_idle(slave->mac_sl, 100);509 510 cpsw_sl_ctl_reset(slave->mac_sl);511 }512 513 if (mac_control != slave->mac_control)514 phy_print_status(phy);515 516 slave->mac_control = mac_control;517}518 519static void cpsw_adjust_link(struct net_device *ndev)520{521 struct cpsw_priv *priv = netdev_priv(ndev);522 struct cpsw_common *cpsw = priv->cpsw;523 bool link = false;524 525 for_each_slave(priv, _cpsw_adjust_link, priv, &link);526 527 if (link) {528 if (cpsw_need_resplit(cpsw))529 cpsw_split_res(cpsw);530 531 netif_carrier_on(ndev);532 if (netif_running(ndev))533 netif_tx_wake_all_queues(ndev);534 } else {535 netif_carrier_off(ndev);536 netif_tx_stop_all_queues(ndev);537 }538}539 540static inline void cpsw_add_dual_emac_def_ale_entries(541 struct cpsw_priv *priv, struct cpsw_slave *slave,542 u32 slave_port)543{544 struct cpsw_common *cpsw = priv->cpsw;545 u32 port_mask = 1 << slave_port | ALE_PORT_HOST;546 547 if (cpsw->version == CPSW_VERSION_1)548 slave_write(slave, slave->port_vlan, CPSW1_PORT_VLAN);549 else550 slave_write(slave, slave->port_vlan, CPSW2_PORT_VLAN);551 cpsw_ale_add_vlan(cpsw->ale, slave->port_vlan, port_mask,552 port_mask, port_mask, 0);553 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,554 ALE_PORT_HOST, ALE_VLAN, slave->port_vlan, 0);555 cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,556 HOST_PORT_NUM, ALE_VLAN |557 ALE_SECURE, slave->port_vlan);558 cpsw_ale_control_set(cpsw->ale, slave_port,559 ALE_PORT_DROP_UNKNOWN_VLAN, 1);560}561 562static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)563{564 u32 slave_port;565 struct phy_device *phy;566 struct cpsw_common *cpsw = priv->cpsw;567 568 cpsw_sl_reset(slave->mac_sl, 100);569 cpsw_sl_ctl_reset(slave->mac_sl);570 571 /* setup priority mapping */572 cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_PRI_MAP,573 RX_PRIORITY_MAPPING);574 575 switch (cpsw->version) {576 case CPSW_VERSION_1:577 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);578 /* Increase RX FIFO size to 5 for supporting fullduplex579 * flow control mode580 */581 slave_write(slave,582 (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |583 CPSW_MAX_BLKS_RX, CPSW1_MAX_BLKS);584 break;585 case CPSW_VERSION_2:586 case CPSW_VERSION_3:587 case CPSW_VERSION_4:588 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);589 /* Increase RX FIFO size to 5 for supporting fullduplex590 * flow control mode591 */592 slave_write(slave,593 (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |594 CPSW_MAX_BLKS_RX, CPSW2_MAX_BLKS);595 break;596 }597 598 /* 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);602 603 slave->mac_control = 0; /* no link yet */604 605 slave_port = cpsw_get_slave_port(slave->slave_num);606 607 if (cpsw->data.dual_emac)608 cpsw_add_dual_emac_def_ale_entries(priv, slave, slave_port);609 else610 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,611 1 << slave_port, 0, 0, ALE_MCAST_FWD_2);612 613 if (slave->data->phy_node) {614 phy = of_phy_connect(priv->ndev, slave->data->phy_node,615 &cpsw_adjust_link, 0, slave->data->phy_if);616 if (!phy) {617 dev_err(priv->dev, "phy \"%pOF\" not found on slave %d\n",618 slave->data->phy_node,619 slave->slave_num);620 return;621 }622 } else {623 phy = phy_connect(priv->ndev, slave->data->phy_id,624 &cpsw_adjust_link, slave->data->phy_if);625 if (IS_ERR(phy)) {626 dev_err(priv->dev,627 "phy \"%s\" not found on slave %d, err %ld\n",628 slave->data->phy_id, slave->slave_num,629 PTR_ERR(phy));630 return;631 }632 }633 634 phy->mac_managed_pm = true;635 636 slave->phy = phy;637 638 phy_attached_info(slave->phy);639 640 phy_start(slave->phy);641 642 /* Configure GMII_SEL register */643 if (!IS_ERR(slave->data->ifphy))644 phy_set_mode_ext(slave->data->ifphy, PHY_MODE_ETHERNET,645 slave->data->phy_if);646 else647 cpsw_phy_sel(cpsw->dev, slave->phy->interface,648 slave->slave_num);649}650 651static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)652{653 struct cpsw_common *cpsw = priv->cpsw;654 const int vlan = cpsw->data.default_vlan;655 u32 reg;656 int i;657 int unreg_mcast_mask;658 659 reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :660 CPSW2_PORT_VLAN;661 662 writel(vlan, &cpsw->host_port_regs->port_vlan);663 664 for (i = 0; i < cpsw->data.slaves; i++)665 slave_write(cpsw->slaves + i, vlan, reg);666 667 if (priv->ndev->flags & IFF_ALLMULTI)668 unreg_mcast_mask = ALE_ALL_PORTS;669 else670 unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;671 672 cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS,673 ALE_ALL_PORTS, ALE_ALL_PORTS,674 unreg_mcast_mask);675}676 677static void cpsw_init_host_port(struct cpsw_priv *priv)678{679 u32 fifo_mode;680 u32 control_reg;681 struct cpsw_common *cpsw = priv->cpsw;682 683 /* soft reset the controller and initialize ale */684 soft_reset("cpsw", &cpsw->regs->soft_reset);685 cpsw_ale_start(cpsw->ale);686 687 /* switch to vlan unaware mode */688 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_VLAN_AWARE,689 CPSW_ALE_VLAN_AWARE);690 control_reg = readl(&cpsw->regs->control);691 control_reg |= CPSW_VLAN_AWARE | CPSW_RX_VLAN_ENCAP;692 writel(control_reg, &cpsw->regs->control);693 fifo_mode = (cpsw->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :694 CPSW_FIFO_NORMAL_MODE;695 writel(fifo_mode, &cpsw->host_port_regs->tx_in_ctl);696 697 /* setup host port priority mapping */698 writel_relaxed(CPDMA_TX_PRIORITY_MAP,699 &cpsw->host_port_regs->cpdma_tx_pri_map);700 writel_relaxed(0, &cpsw->host_port_regs->cpdma_rx_chan_map);701 702 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,703 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);704 705 if (!cpsw->data.dual_emac) {706 cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,707 0, 0);708 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,709 ALE_PORT_HOST, 0, 0, ALE_MCAST_FWD_2);710 }711}712 713static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_common *cpsw)714{715 u32 slave_port;716 717 slave_port = cpsw_get_slave_port(slave->slave_num);718 719 if (!slave->phy)720 return;721 phy_stop(slave->phy);722 phy_disconnect(slave->phy);723 slave->phy = NULL;724 cpsw_ale_control_set(cpsw->ale, slave_port,725 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);726 cpsw_sl_reset(slave->mac_sl, 100);727 cpsw_sl_ctl_reset(slave->mac_sl);728}729 730static int cpsw_restore_vlans(struct net_device *vdev, int vid, void *arg)731{732 struct cpsw_priv *priv = arg;733 734 if (!vdev)735 return 0;736 737 cpsw_ndo_vlan_rx_add_vid(priv->ndev, 0, vid);738 return 0;739}740 741/* restore resources after port reset */742static void cpsw_restore(struct cpsw_priv *priv)743{744 /* restore vlan configurations */745 vlan_for_each(priv->ndev, cpsw_restore_vlans, priv);746 747 /* restore MQPRIO offload */748 for_each_slave(priv, cpsw_mqprio_resume, priv);749 750 /* restore CBS offload */751 for_each_slave(priv, cpsw_cbs_resume, priv);752}753 754static int cpsw_ndo_open(struct net_device *ndev)755{756 struct cpsw_priv *priv = netdev_priv(ndev);757 struct cpsw_common *cpsw = priv->cpsw;758 int ret;759 u32 reg;760 761 ret = pm_runtime_resume_and_get(cpsw->dev);762 if (ret < 0)763 return ret;764 765 netif_carrier_off(ndev);766 767 /* Notify the stack of the actual queue counts. */768 ret = netif_set_real_num_tx_queues(ndev, cpsw->tx_ch_num);769 if (ret) {770 dev_err(priv->dev, "cannot set real number of tx queues\n");771 goto err_cleanup;772 }773 774 ret = netif_set_real_num_rx_queues(ndev, cpsw->rx_ch_num);775 if (ret) {776 dev_err(priv->dev, "cannot set real number of rx queues\n");777 goto err_cleanup;778 }779 780 reg = cpsw->version;781 782 dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",783 CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),784 CPSW_RTL_VERSION(reg));785 786 /* 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);790 791 /* Add default VLAN */792 if (!cpsw->data.dual_emac)793 cpsw_add_default_vlan(priv);794 else795 cpsw_ale_add_vlan(cpsw->ale, cpsw->data.default_vlan,796 ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0);797 798 /* initialize shared resources for every ndev */799 if (!cpsw->usage_count) {800 /* disable priority elevation */801 writel_relaxed(0, &cpsw->regs->ptype);802 803 /* enable statistics collection only on all ports */804 writel_relaxed(0x7, &cpsw->regs->stat_port_en);805 806 /* Enable internal fifo flow control */807 writel(0x7, &cpsw->regs->flow_control);808 809 napi_enable(&cpsw->napi_rx);810 napi_enable(&cpsw->napi_tx);811 812 if (cpsw->tx_irq_disabled) {813 cpsw->tx_irq_disabled = false;814 enable_irq(cpsw->irqs_table[1]);815 }816 817 if (cpsw->rx_irq_disabled) {818 cpsw->rx_irq_disabled = false;819 enable_irq(cpsw->irqs_table[0]);820 }821 822 /* create rxqs for both infs in dual mac as they use same pool823 * and must be destroyed together when no users.824 */825 ret = cpsw_create_xdp_rxqs(cpsw);826 if (ret < 0)827 goto err_cleanup;828 829 ret = cpsw_fill_rx_channels(priv);830 if (ret < 0)831 goto err_cleanup;832 833 if (cpsw->cpts) {834 if (cpts_register(cpsw->cpts))835 dev_err(priv->dev, "error registering cpts device\n");836 else837 writel(0x10, &cpsw->wr_regs->misc_en);838 }839 }840 841 cpsw_restore(priv);842 843 /* Enable Interrupt pacing if configured */844 if (cpsw->coal_intvl != 0) {845 struct ethtool_coalesce coal;846 847 coal.rx_coalesce_usecs = cpsw->coal_intvl;848 cpsw_set_coalesce(ndev, &coal, NULL, NULL);849 }850 851 cpdma_ctlr_start(cpsw->dma);852 cpsw_intr_enable(cpsw);853 cpsw->usage_count++;854 855 return 0;856 857err_cleanup:858 if (!cpsw->usage_count) {859 napi_disable(&cpsw->napi_rx);860 napi_disable(&cpsw->napi_tx);861 cpdma_ctlr_stop(cpsw->dma);862 cpsw_destroy_xdp_rxqs(cpsw);863 }864 865 for_each_slave(priv, cpsw_slave_stop, cpsw);866 pm_runtime_put_sync(cpsw->dev);867 netif_carrier_off(priv->ndev);868 return ret;869}870 871static int cpsw_ndo_stop(struct net_device *ndev)872{873 struct cpsw_priv *priv = netdev_priv(ndev);874 struct cpsw_common *cpsw = priv->cpsw;875 876 cpsw_info(priv, ifdown, "shutting down cpsw device\n");877 __hw_addr_ref_unsync_dev(&ndev->mc, ndev, cpsw_purge_all_mc);878 netif_tx_stop_all_queues(priv->ndev);879 netif_carrier_off(priv->ndev);880 881 if (cpsw->usage_count <= 1) {882 napi_disable(&cpsw->napi_rx);883 napi_disable(&cpsw->napi_tx);884 cpts_unregister(cpsw->cpts);885 cpsw_intr_disable(cpsw);886 cpdma_ctlr_stop(cpsw->dma);887 cpsw_ale_stop(cpsw->ale);888 cpsw_destroy_xdp_rxqs(cpsw);889 }890 for_each_slave(priv, cpsw_slave_stop, cpsw);891 892 if (cpsw_need_resplit(cpsw))893 cpsw_split_res(cpsw);894 895 cpsw->usage_count--;896 pm_runtime_put_sync(cpsw->dev);897 return 0;898}899 900static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,901 struct net_device *ndev)902{903 struct cpsw_priv *priv = netdev_priv(ndev);904 struct cpsw_common *cpsw = priv->cpsw;905 struct cpts *cpts = cpsw->cpts;906 struct netdev_queue *txq;907 struct cpdma_chan *txch;908 int ret, q_idx;909 910 if (skb_put_padto(skb, CPSW_MIN_PACKET_SIZE)) {911 cpsw_err(priv, tx_err, "packet pad failed\n");912 ndev->stats.tx_dropped++;913 return NET_XMIT_DROP;914 }915 916 if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&917 priv->tx_ts_enabled && cpts_can_timestamp(cpts, skb))918 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;919 920 q_idx = skb_get_queue_mapping(skb);921 if (q_idx >= cpsw->tx_ch_num)922 q_idx = q_idx % cpsw->tx_ch_num;923 924 txch = cpsw->txv[q_idx].ch;925 txq = netdev_get_tx_queue(ndev, q_idx);926 skb_tx_timestamp(skb);927 ret = cpdma_chan_submit(txch, skb, skb->data, skb->len,928 priv->emac_port + cpsw->data.dual_emac);929 if (unlikely(ret != 0)) {930 cpsw_err(priv, tx_err, "desc submit failed\n");931 goto fail;932 }933 934 /* If there is no more tx desc left free then we need to935 * tell the kernel to stop sending us tx frames.936 */937 if (unlikely(!cpdma_check_free_tx_desc(txch))) {938 netif_tx_stop_queue(txq);939 940 /* Barrier, so that stop_queue visible to other cpus */941 smp_mb__after_atomic();942 943 if (cpdma_check_free_tx_desc(txch))944 netif_tx_wake_queue(txq);945 }946 947 return NETDEV_TX_OK;948fail:949 ndev->stats.tx_dropped++;950 netif_tx_stop_queue(txq);951 952 /* Barrier, so that stop_queue visible to other cpus */953 smp_mb__after_atomic();954 955 if (cpdma_check_free_tx_desc(txch))956 netif_tx_wake_queue(txq);957 958 return NETDEV_TX_BUSY;959}960 961static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)962{963 struct cpsw_priv *priv = netdev_priv(ndev);964 struct sockaddr *addr = (struct sockaddr *)p;965 struct cpsw_common *cpsw = priv->cpsw;966 int flags = 0;967 u16 vid = 0;968 int ret;969 970 if (!is_valid_ether_addr(addr->sa_data))971 return -EADDRNOTAVAIL;972 973 ret = pm_runtime_resume_and_get(cpsw->dev);974 if (ret < 0)975 return ret;976 977 if (cpsw->data.dual_emac) {978 vid = cpsw->slaves[priv->emac_port].port_vlan;979 flags = ALE_VLAN;980 }981 982 cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,983 flags, vid);984 cpsw_ale_add_ucast(cpsw->ale, addr->sa_data, HOST_PORT_NUM,985 flags, vid);986 987 memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);988 eth_hw_addr_set(ndev, priv->mac_addr);989 for_each_slave(priv, cpsw_set_slave_mac, priv);990 991 pm_runtime_put(cpsw->dev);992 993 return 0;994}995 996static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,997 unsigned short vid)998{999 int ret;1000 int unreg_mcast_mask = 0;1001 int mcast_mask;1002 u32 port_mask;1003 struct cpsw_common *cpsw = priv->cpsw;1004 1005 if (cpsw->data.dual_emac) {1006 port_mask = (1 << (priv->emac_port + 1)) | ALE_PORT_HOST;1007 1008 mcast_mask = ALE_PORT_HOST;1009 if (priv->ndev->flags & IFF_ALLMULTI)1010 unreg_mcast_mask = mcast_mask;1011 } else {1012 port_mask = ALE_ALL_PORTS;1013 mcast_mask = port_mask;1014 1015 if (priv->ndev->flags & IFF_ALLMULTI)1016 unreg_mcast_mask = ALE_ALL_PORTS;1017 else1018 unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;1019 }1020 1021 ret = cpsw_ale_add_vlan(cpsw->ale, vid, port_mask, 0, port_mask,1022 unreg_mcast_mask);1023 if (ret != 0)1024 return ret;1025 1026 ret = cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,1027 HOST_PORT_NUM, ALE_VLAN, vid);1028 if (ret != 0)1029 goto clean_vid;1030 1031 ret = cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,1032 mcast_mask, ALE_VLAN, vid, 0);1033 if (ret != 0)1034 goto clean_vlan_ucast;1035 return 0;1036 1037clean_vlan_ucast:1038 cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,1039 HOST_PORT_NUM, ALE_VLAN, vid);1040clean_vid:1041 cpsw_ale_del_vlan(cpsw->ale, vid, 0);1042 return ret;1043}1044 1045static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,1046 __be16 proto, u16 vid)1047{1048 struct cpsw_priv *priv = netdev_priv(ndev);1049 struct cpsw_common *cpsw = priv->cpsw;1050 int ret;1051 1052 if (vid == cpsw->data.default_vlan)1053 return 0;1054 1055 ret = pm_runtime_resume_and_get(cpsw->dev);1056 if (ret < 0)1057 return ret;1058 1059 if (cpsw->data.dual_emac) {1060 /* In dual EMAC, reserved VLAN id should not be used for1061 * creating VLAN interfaces as this can break the dual1062 * EMAC port separation1063 */1064 int i;1065 1066 for (i = 0; i < cpsw->data.slaves; i++) {1067 if (vid == cpsw->slaves[i].port_vlan) {1068 ret = -EINVAL;1069 goto err;1070 }1071 }1072 }1073 1074 dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);1075 ret = cpsw_add_vlan_ale_entry(priv, vid);1076err:1077 pm_runtime_put(cpsw->dev);1078 return ret;1079}1080 1081static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,1082 __be16 proto, u16 vid)1083{1084 struct cpsw_priv *priv = netdev_priv(ndev);1085 struct cpsw_common *cpsw = priv->cpsw;1086 int ret;1087 1088 if (vid == cpsw->data.default_vlan)1089 return 0;1090 1091 ret = pm_runtime_resume_and_get(cpsw->dev);1092 if (ret < 0)1093 return ret;1094 1095 if (cpsw->data.dual_emac) {1096 int i;1097 1098 for (i = 0; i < cpsw->data.slaves; i++) {1099 if (vid == cpsw->slaves[i].port_vlan)1100 goto err;1101 }1102 }1103 1104 dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);1105 ret = cpsw_ale_del_vlan(cpsw->ale, vid, 0);1106 ret |= cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,1107 HOST_PORT_NUM, ALE_VLAN, vid);1108 ret |= cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,1109 0, ALE_VLAN, vid);1110 ret |= cpsw_ale_flush_multicast(cpsw->ale, ALE_PORT_HOST, vid);1111err:1112 pm_runtime_put(cpsw->dev);1113 return ret;1114}1115 1116static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n,1117 struct xdp_frame **frames, u32 flags)1118{1119 struct cpsw_priv *priv = netdev_priv(ndev);1120 struct cpsw_common *cpsw = priv->cpsw;1121 struct xdp_frame *xdpf;1122 int i, nxmit = 0, port;1123 1124 if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))1125 return -EINVAL;1126 1127 for (i = 0; i < n; i++) {1128 xdpf = frames[i];1129 if (xdpf->len < CPSW_MIN_PACKET_SIZE)1130 break;1131 1132 port = priv->emac_port + cpsw->data.dual_emac;1133 if (cpsw_xdp_tx_frame(priv, xdpf, NULL, port))1134 break;1135 nxmit++;1136 }1137 1138 return nxmit;1139}1140 1141#ifdef CONFIG_NET_POLL_CONTROLLER1142static void cpsw_ndo_poll_controller(struct net_device *ndev)1143{1144 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);1145 1146 cpsw_intr_disable(cpsw);1147 cpsw_rx_interrupt(cpsw->irqs_table[0], cpsw);1148 cpsw_tx_interrupt(cpsw->irqs_table[1], cpsw);1149 cpsw_intr_enable(cpsw);1150}1151#endif1152 1153static const struct net_device_ops cpsw_netdev_ops = {1154 .ndo_open = cpsw_ndo_open,1155 .ndo_stop = cpsw_ndo_stop,1156 .ndo_start_xmit = cpsw_ndo_start_xmit,1157 .ndo_set_mac_address = cpsw_ndo_set_mac_address,1158 .ndo_eth_ioctl = cpsw_ndo_ioctl,1159 .ndo_validate_addr = eth_validate_addr,1160 .ndo_tx_timeout = cpsw_ndo_tx_timeout,1161 .ndo_set_rx_mode = cpsw_ndo_set_rx_mode,1162 .ndo_set_tx_maxrate = cpsw_ndo_set_tx_maxrate,1163#ifdef CONFIG_NET_POLL_CONTROLLER1164 .ndo_poll_controller = cpsw_ndo_poll_controller,1165#endif1166 .ndo_vlan_rx_add_vid = cpsw_ndo_vlan_rx_add_vid,1167 .ndo_vlan_rx_kill_vid = cpsw_ndo_vlan_rx_kill_vid,1168 .ndo_setup_tc = cpsw_ndo_setup_tc,1169 .ndo_bpf = cpsw_ndo_bpf,1170 .ndo_xdp_xmit = cpsw_ndo_xdp_xmit,1171};1172 1173static void cpsw_get_drvinfo(struct net_device *ndev,1174 struct ethtool_drvinfo *info)1175{1176 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);1177 struct platform_device *pdev = to_platform_device(cpsw->dev);1178 1179 strscpy(info->driver, "cpsw", sizeof(info->driver));1180 strscpy(info->version, "1.0", sizeof(info->version));1181 strscpy(info->bus_info, pdev->name, sizeof(info->bus_info));1182}1183 1184static int cpsw_set_pauseparam(struct net_device *ndev,1185 struct ethtool_pauseparam *pause)1186{1187 struct cpsw_priv *priv = netdev_priv(ndev);1188 bool link;1189 1190 priv->rx_pause = pause->rx_pause ? true : false;1191 priv->tx_pause = pause->tx_pause ? true : false;1192 1193 for_each_slave(priv, _cpsw_adjust_link, priv, &link);1194 return 0;1195}1196 1197static int cpsw_set_channels(struct net_device *ndev,1198 struct ethtool_channels *chs)1199{1200 return cpsw_set_channels_common(ndev, chs, cpsw_rx_handler);1201}1202 1203static const struct ethtool_ops cpsw_ethtool_ops = {1204 .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,1205 .get_drvinfo = cpsw_get_drvinfo,1206 .get_msglevel = cpsw_get_msglevel,1207 .set_msglevel = cpsw_set_msglevel,1208 .get_link = ethtool_op_get_link,1209 .get_ts_info = cpsw_get_ts_info,1210 .get_coalesce = cpsw_get_coalesce,1211 .set_coalesce = cpsw_set_coalesce,1212 .get_sset_count = cpsw_get_sset_count,1213 .get_strings = cpsw_get_strings,1214 .get_ethtool_stats = cpsw_get_ethtool_stats,1215 .get_pauseparam = cpsw_get_pauseparam,1216 .set_pauseparam = cpsw_set_pauseparam,1217 .get_wol = cpsw_get_wol,1218 .set_wol = cpsw_set_wol,1219 .get_regs_len = cpsw_get_regs_len,1220 .get_regs = cpsw_get_regs,1221 .begin = cpsw_ethtool_op_begin,1222 .complete = cpsw_ethtool_op_complete,1223 .get_channels = cpsw_get_channels,1224 .set_channels = cpsw_set_channels,1225 .get_link_ksettings = cpsw_get_link_ksettings,1226 .set_link_ksettings = cpsw_set_link_ksettings,1227 .get_eee = cpsw_get_eee,1228 .set_eee = cpsw_set_eee,1229 .nway_reset = cpsw_nway_reset,1230 .get_ringparam = cpsw_get_ringparam,1231 .set_ringparam = cpsw_set_ringparam,1232};1233 1234static int cpsw_probe_dt(struct cpsw_platform_data *data,1235 struct platform_device *pdev)1236{1237 struct device_node *node = pdev->dev.of_node;1238 struct device_node *slave_node;1239 int i = 0, ret;1240 u32 prop;1241 1242 if (!node)1243 return -EINVAL;1244 1245 if (of_property_read_u32(node, "slaves", &prop)) {1246 dev_err(&pdev->dev, "Missing slaves property in the DT.\n");1247 return -EINVAL;1248 }1249 data->slaves = prop;1250 1251 if (of_property_read_u32(node, "active_slave", &prop)) {1252 dev_err(&pdev->dev, "Missing active_slave property in the DT.\n");1253 return -EINVAL;1254 }1255 data->active_slave = prop;1256 1257 data->slave_data = devm_kcalloc(&pdev->dev,1258 data->slaves,1259 sizeof(struct cpsw_slave_data),1260 GFP_KERNEL);1261 if (!data->slave_data)1262 return -ENOMEM;1263 1264 if (of_property_read_u32(node, "cpdma_channels", &prop)) {1265 dev_err(&pdev->dev, "Missing cpdma_channels property in the DT.\n");1266 return -EINVAL;1267 }1268 data->channels = prop;1269 1270 if (of_property_read_u32(node, "bd_ram_size", &prop)) {1271 dev_err(&pdev->dev, "Missing bd_ram_size property in the DT.\n");1272 return -EINVAL;1273 }1274 data->bd_ram_size = prop;1275 1276 if (of_property_read_u32(node, "mac_control", &prop)) {1277 dev_err(&pdev->dev, "Missing mac_control property in the DT.\n");1278 return -EINVAL;1279 }1280 data->mac_control = prop;1281 1282 if (of_property_read_bool(node, "dual_emac"))1283 data->dual_emac = true;1284 1285 /*1286 * Populate all the child nodes here...1287 */1288 ret = of_platform_populate(node, NULL, NULL, &pdev->dev);1289 /* We do not want to force this, as in some cases may not have child */1290 if (ret)1291 dev_warn(&pdev->dev, "Doesn't have any child node\n");1292 1293 for_each_available_child_of_node(node, slave_node) {1294 struct cpsw_slave_data *slave_data = data->slave_data + i;1295 int lenp;1296 const __be32 *parp;1297 1298 /* This is no slave child node, continue */1299 if (!of_node_name_eq(slave_node, "slave"))1300 continue;1301 1302 slave_data->ifphy = devm_of_phy_get(&pdev->dev, slave_node,1303 NULL);1304 if (!IS_ENABLED(CONFIG_TI_CPSW_PHY_SEL) &&1305 IS_ERR(slave_data->ifphy)) {1306 ret = PTR_ERR(slave_data->ifphy);1307 dev_err(&pdev->dev,1308 "%d: Error retrieving port phy: %d\n", i, ret);1309 goto err_node_put;1310 }1311 1312 slave_data->slave_node = slave_node;1313 slave_data->phy_node = of_parse_phandle(slave_node,1314 "phy-handle", 0);1315 parp = of_get_property(slave_node, "phy_id", &lenp);1316 if (slave_data->phy_node) {1317 dev_dbg(&pdev->dev,1318 "slave[%d] using phy-handle=\"%pOF\"\n",1319 i, slave_data->phy_node);1320 } else if (of_phy_is_fixed_link(slave_node)) {1321 /* In the case of a fixed PHY, the DT node associated1322 * to the PHY is the Ethernet MAC DT node.1323 */1324 ret = of_phy_register_fixed_link(slave_node);1325 if (ret) {1326 dev_err_probe(&pdev->dev, ret, "failed to register fixed-link phy\n");1327 goto err_node_put;1328 }1329 slave_data->phy_node = of_node_get(slave_node);1330 } else if (parp) {1331 u32 phyid;1332 struct device_node *mdio_node;1333 struct platform_device *mdio;1334 1335 if (lenp != (sizeof(__be32) * 2)) {1336 dev_err(&pdev->dev, "Invalid slave[%d] phy_id property\n", i);1337 goto no_phy_slave;1338 }1339 mdio_node = of_find_node_by_phandle(be32_to_cpup(parp));1340 phyid = be32_to_cpup(parp+1);1341 mdio = of_find_device_by_node(mdio_node);1342 of_node_put(mdio_node);1343 if (!mdio) {1344 dev_err(&pdev->dev, "Missing mdio platform device\n");1345 ret = -EINVAL;1346 goto err_node_put;1347 }1348 snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),1349 PHY_ID_FMT, mdio->name, phyid);1350 put_device(&mdio->dev);1351 } else {1352 dev_err(&pdev->dev,1353 "No slave[%d] phy_id, phy-handle, or fixed-link property\n",1354 i);1355 goto no_phy_slave;1356 }1357 ret = of_get_phy_mode(slave_node, &slave_data->phy_if);1358 if (ret) {1359 dev_err(&pdev->dev, "Missing or malformed slave[%d] phy-mode property\n",1360 i);1361 goto err_node_put;1362 }1363 1364no_phy_slave:1365 ret = of_get_mac_address(slave_node, slave_data->mac_addr);1366 if (ret) {1367 ret = ti_cm_get_macid(&pdev->dev, i,1368 slave_data->mac_addr);1369 if (ret)1370 goto err_node_put;1371 }1372 if (data->dual_emac) {1373 if (of_property_read_u32(slave_node, "dual_emac_res_vlan",1374 &prop)) {1375 dev_err(&pdev->dev, "Missing dual_emac_res_vlan in DT.\n");1376 slave_data->dual_emac_res_vlan = i+1;1377 dev_err(&pdev->dev, "Using %d as Reserved VLAN for %d slave\n",1378 slave_data->dual_emac_res_vlan, i);1379 } else {1380 slave_data->dual_emac_res_vlan = prop;1381 }1382 }1383 1384 i++;1385 if (i == data->slaves) {1386 ret = 0;1387 goto err_node_put;1388 }1389 }1390 1391 return 0;1392 1393err_node_put:1394 of_node_put(slave_node);1395 return ret;1396}1397 1398static void cpsw_remove_dt(struct platform_device *pdev)1399{1400 struct cpsw_common *cpsw = platform_get_drvdata(pdev);1401 struct cpsw_platform_data *data = &cpsw->data;1402 struct device_node *node = pdev->dev.of_node;1403 struct device_node *slave_node;1404 int i = 0;1405 1406 for_each_available_child_of_node(node, slave_node) {1407 struct cpsw_slave_data *slave_data = &data->slave_data[i];1408 1409 if (!of_node_name_eq(slave_node, "slave"))1410 continue;1411 1412 if (of_phy_is_fixed_link(slave_node))1413 of_phy_deregister_fixed_link(slave_node);1414 1415 of_node_put(slave_data->phy_node);1416 1417 i++;1418 if (i == data->slaves) {1419 of_node_put(slave_node);1420 break;1421 }1422 }1423 1424 of_platform_depopulate(&pdev->dev);1425}1426 1427static int cpsw_probe_dual_emac(struct cpsw_priv *priv)1428{1429 struct cpsw_common *cpsw = priv->cpsw;1430 struct cpsw_platform_data *data = &cpsw->data;1431 struct net_device *ndev;1432 struct cpsw_priv *priv_sl2;1433 int ret = 0;1434 1435 ndev = devm_alloc_etherdev_mqs(cpsw->dev, sizeof(struct cpsw_priv),1436 CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);1437 if (!ndev) {1438 dev_err(cpsw->dev, "cpsw: error allocating net_device\n");1439 return -ENOMEM;1440 }1441 1442 priv_sl2 = netdev_priv(ndev);1443 priv_sl2->cpsw = cpsw;1444 priv_sl2->ndev = ndev;1445 priv_sl2->dev = &ndev->dev;1446 priv_sl2->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);1447 1448 if (is_valid_ether_addr(data->slave_data[1].mac_addr)) {1449 memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,1450 ETH_ALEN);1451 dev_info(cpsw->dev, "cpsw: Detected MACID = %pM\n",1452 priv_sl2->mac_addr);1453 } else {1454 eth_random_addr(priv_sl2->mac_addr);1455 dev_info(cpsw->dev, "cpsw: Random MACID = %pM\n",1456 priv_sl2->mac_addr);1457 }1458 eth_hw_addr_set(ndev, priv_sl2->mac_addr);1459 1460 priv_sl2->emac_port = 1;1461 cpsw->slaves[1].ndev = ndev;1462 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;1463 ndev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |1464 NETDEV_XDP_ACT_NDO_XMIT;1465 1466 ndev->netdev_ops = &cpsw_netdev_ops;1467 ndev->ethtool_ops = &cpsw_ethtool_ops;1468 1469 /* register the network device */1470 SET_NETDEV_DEV(ndev, cpsw->dev);1471 ndev->dev.of_node = cpsw->slaves[1].data->slave_node;1472 ret = register_netdev(ndev);1473 if (ret)1474 dev_err(cpsw->dev, "cpsw: error registering net device\n");1475 1476 return ret;1477}1478 1479static const struct of_device_id cpsw_of_mtable[] = {1480 { .compatible = "ti,cpsw"},1481 { .compatible = "ti,am335x-cpsw"},1482 { .compatible = "ti,am4372-cpsw"},1483 { .compatible = "ti,dra7-cpsw"},1484 { /* sentinel */ },1485};1486MODULE_DEVICE_TABLE(of, cpsw_of_mtable);1487 1488static const struct soc_device_attribute cpsw_soc_devices[] = {1489 { .family = "AM33xx", .revision = "ES1.0"},1490 { /* sentinel */ }1491};1492 1493static int cpsw_probe(struct platform_device *pdev)1494{1495 struct device *dev = &pdev->dev;1496 struct clk *clk;1497 struct cpsw_platform_data *data;1498 struct net_device *ndev;1499 struct cpsw_priv *priv;1500 void __iomem *ss_regs;1501 struct resource *ss_res;1502 struct gpio_descs *mode;1503 const struct soc_device_attribute *soc;1504 struct cpsw_common *cpsw;1505 int ret = 0, ch;1506 int irq;1507 1508 cpsw = devm_kzalloc(dev, sizeof(struct cpsw_common), GFP_KERNEL);1509 if (!cpsw)1510 return -ENOMEM;1511 1512 platform_set_drvdata(pdev, cpsw);1513 cpsw_slave_index = cpsw_slave_index_priv;1514 1515 cpsw->dev = dev;1516 1517 mode = devm_gpiod_get_array_optional(dev, "mode", GPIOD_OUT_LOW);1518 if (IS_ERR(mode)) {1519 ret = PTR_ERR(mode);1520 dev_err(dev, "gpio request failed, ret %d\n", ret);1521 return ret;1522 }1523 1524 clk = devm_clk_get(dev, "fck");1525 if (IS_ERR(clk)) {1526 ret = PTR_ERR(clk);1527 dev_err(dev, "fck is not found %d\n", ret);1528 return ret;1529 }1530 cpsw->bus_freq_mhz = clk_get_rate(clk) / 1000000;1531 1532 ss_regs = devm_platform_get_and_ioremap_resource(pdev, 0, &ss_res);1533 if (IS_ERR(ss_regs))1534 return PTR_ERR(ss_regs);1535 cpsw->regs = ss_regs;1536 1537 cpsw->wr_regs = devm_platform_ioremap_resource(pdev, 1);1538 if (IS_ERR(cpsw->wr_regs))1539 return PTR_ERR(cpsw->wr_regs);1540 1541 /* RX IRQ */1542 irq = platform_get_irq(pdev, 1);1543 if (irq < 0)1544 return irq;1545 cpsw->irqs_table[0] = irq;1546 1547 /* TX IRQ */1548 irq = platform_get_irq(pdev, 2);1549 if (irq < 0)1550 return irq;1551 cpsw->irqs_table[1] = irq;1552 1553 /* get misc irq*/1554 irq = platform_get_irq(pdev, 3);1555 if (irq <= 0)1556 return irq;1557 cpsw->misc_irq = irq;1558 1559 /*1560 * This may be required here for child devices.1561 */1562 pm_runtime_enable(dev);1563 1564 /* Need to enable clocks with runtime PM api to access module1565 * registers1566 */1567 ret = pm_runtime_resume_and_get(dev);1568 if (ret < 0)1569 goto clean_runtime_disable_ret;1570 1571 ret = cpsw_probe_dt(&cpsw->data, pdev);1572 if (ret)1573 goto clean_dt_ret;1574 1575 soc = soc_device_match(cpsw_soc_devices);1576 if (soc)1577 cpsw->quirk_irq = true;1578 1579 data = &cpsw->data;1580 cpsw->slaves = devm_kcalloc(dev,1581 data->slaves, sizeof(struct cpsw_slave),1582 GFP_KERNEL);1583 if (!cpsw->slaves) {1584 ret = -ENOMEM;1585 goto clean_dt_ret;1586 }1587 1588 cpsw->rx_packet_max = max(rx_packet_max, CPSW_MAX_PACKET_SIZE);1589 cpsw->descs_pool_size = descs_pool_size;1590 1591 ret = cpsw_init_common(cpsw, ss_regs, ale_ageout,1592 ss_res->start + CPSW2_BD_OFFSET,1593 descs_pool_size);1594 if (ret)1595 goto clean_dt_ret;1596 1597 ch = cpsw->quirk_irq ? 0 : 7;1598 cpsw->txv[0].ch = cpdma_chan_create(cpsw->dma, ch, cpsw_tx_handler, 0);1599 if (IS_ERR(cpsw->txv[0].ch)) {1600 dev_err(dev, "error initializing tx dma channel\n");1601 ret = PTR_ERR(cpsw->txv[0].ch);1602 goto clean_cpts;1603 }1604 1605 cpsw->rxv[0].ch = cpdma_chan_create(cpsw->dma, 0, cpsw_rx_handler, 1);1606 if (IS_ERR(cpsw->rxv[0].ch)) {1607 dev_err(dev, "error initializing rx dma channel\n");1608 ret = PTR_ERR(cpsw->rxv[0].ch);1609 goto clean_cpts;1610 }1611 cpsw_split_res(cpsw);1612 1613 /* setup netdev */1614 ndev = devm_alloc_etherdev_mqs(dev, sizeof(struct cpsw_priv),1615 CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);1616 if (!ndev) {1617 dev_err(dev, "error allocating net_device\n");1618 ret = -ENOMEM;1619 goto clean_cpts;1620 }1621 1622 priv = netdev_priv(ndev);1623 priv->cpsw = cpsw;1624 priv->ndev = ndev;1625 priv->dev = dev;1626 priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);1627 priv->emac_port = 0;1628 1629 if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {1630 memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);1631 dev_info(dev, "Detected MACID = %pM\n", priv->mac_addr);1632 } else {1633 eth_random_addr(priv->mac_addr);1634 dev_info(dev, "Random MACID = %pM\n", priv->mac_addr);1635 }1636 1637 eth_hw_addr_set(ndev, priv->mac_addr);1638 1639 cpsw->slaves[0].ndev = ndev;1640 1641 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;1642 ndev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |1643 NETDEV_XDP_ACT_NDO_XMIT;1644 1645 ndev->netdev_ops = &cpsw_netdev_ops;1646 ndev->ethtool_ops = &cpsw_ethtool_ops;1647 netif_napi_add(ndev, &cpsw->napi_rx,1648 cpsw->quirk_irq ? cpsw_rx_poll : cpsw_rx_mq_poll);1649 netif_napi_add_tx(ndev, &cpsw->napi_tx,1650 cpsw->quirk_irq ? cpsw_tx_poll : cpsw_tx_mq_poll);1651 1652 /* register the network device */1653 SET_NETDEV_DEV(ndev, dev);1654 ndev->dev.of_node = cpsw->slaves[0].data->slave_node;1655 ret = register_netdev(ndev);1656 if (ret) {1657 dev_err(dev, "error registering net device\n");1658 ret = -ENODEV;1659 goto clean_cpts;1660 }1661 1662 if (cpsw->data.dual_emac) {1663 ret = cpsw_probe_dual_emac(priv);1664 if (ret) {1665 cpsw_err(priv, probe, "error probe slave 2 emac interface\n");1666 goto clean_unregister_netdev_ret;1667 }1668 }1669 1670 /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and1671 * MISC IRQs which are always kept disabled with this driver so1672 * we will not request them.1673 *1674 * If anyone wants to implement support for those, make sure to1675 * first request and append them to irqs_table array.1676 */1677 ret = devm_request_irq(dev, cpsw->irqs_table[0], cpsw_rx_interrupt,1678 0, dev_name(dev), cpsw);1679 if (ret < 0) {1680 dev_err(dev, "error attaching irq (%d)\n", ret);1681 goto clean_unregister_netdev_ret;1682 }1683 1684 1685 ret = devm_request_irq(dev, cpsw->irqs_table[1], cpsw_tx_interrupt,1686 0, dev_name(&pdev->dev), cpsw);1687 if (ret < 0) {1688 dev_err(dev, "error attaching irq (%d)\n", ret);1689 goto clean_unregister_netdev_ret;1690 }1691 1692 if (!cpsw->cpts)1693 goto skip_cpts;1694 1695 ret = devm_request_irq(&pdev->dev, cpsw->misc_irq, cpsw_misc_interrupt,1696 0, dev_name(&pdev->dev), cpsw);1697 if (ret < 0) {1698 dev_err(dev, "error attaching misc irq (%d)\n", ret);1699 goto clean_unregister_netdev_ret;1700 }1701 1702 /* Enable misc CPTS evnt_pend IRQ */1703 cpts_set_irqpoll(cpsw->cpts, false);1704 1705skip_cpts:1706 cpsw_notice(priv, probe,1707 "initialized device (regs %pa, irq %d, pool size %d)\n",1708 &ss_res->start, cpsw->irqs_table[0], descs_pool_size);1709 1710 pm_runtime_put(&pdev->dev);1711 1712 return 0;1713 1714clean_unregister_netdev_ret:1715 unregister_netdev(ndev);1716clean_cpts:1717 cpts_release(cpsw->cpts);1718 cpdma_ctlr_destroy(cpsw->dma);1719clean_dt_ret:1720 cpsw_remove_dt(pdev);1721 pm_runtime_put_sync(&pdev->dev);1722clean_runtime_disable_ret:1723 pm_runtime_disable(&pdev->dev);1724 return ret;1725}1726 1727static void cpsw_remove(struct platform_device *pdev)1728{1729 struct cpsw_common *cpsw = platform_get_drvdata(pdev);1730 int i, ret;1731 1732 ret = pm_runtime_resume_and_get(&pdev->dev);1733 if (ret < 0) {1734 /* Note, if this error path is taken, we're leaking some1735 * resources.1736 */1737 dev_err(&pdev->dev, "Failed to resume device (%pe)\n",1738 ERR_PTR(ret));1739 return;1740 }1741 1742 for (i = 0; i < cpsw->data.slaves; i++)1743 if (cpsw->slaves[i].ndev)1744 unregister_netdev(cpsw->slaves[i].ndev);1745 1746 cpts_release(cpsw->cpts);1747 cpdma_ctlr_destroy(cpsw->dma);1748 cpsw_remove_dt(pdev);1749 pm_runtime_put_sync(&pdev->dev);1750 pm_runtime_disable(&pdev->dev);1751}1752 1753#ifdef CONFIG_PM_SLEEP1754static int cpsw_suspend(struct device *dev)1755{1756 struct cpsw_common *cpsw = dev_get_drvdata(dev);1757 int i;1758 1759 rtnl_lock();1760 1761 for (i = 0; i < cpsw->data.slaves; i++)1762 if (cpsw->slaves[i].ndev)1763 if (netif_running(cpsw->slaves[i].ndev))1764 cpsw_ndo_stop(cpsw->slaves[i].ndev);1765 1766 rtnl_unlock();1767 1768 /* Select sleep pin state */1769 pinctrl_pm_select_sleep_state(dev);1770 1771 return 0;1772}1773 1774static int cpsw_resume(struct device *dev)1775{1776 struct cpsw_common *cpsw = dev_get_drvdata(dev);1777 int i;1778 1779 /* Select default pin state */1780 pinctrl_pm_select_default_state(dev);1781 1782 /* shut up ASSERT_RTNL() warning in netif_set_real_num_tx/rx_queues */1783 rtnl_lock();1784 1785 for (i = 0; i < cpsw->data.slaves; i++)1786 if (cpsw->slaves[i].ndev)1787 if (netif_running(cpsw->slaves[i].ndev))1788 cpsw_ndo_open(cpsw->slaves[i].ndev);1789 1790 rtnl_unlock();1791 1792 return 0;1793}1794#endif1795 1796static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);1797 1798static struct platform_driver cpsw_driver = {1799 .driver = {1800 .name = "cpsw",1801 .pm = &cpsw_pm_ops,1802 .of_match_table = cpsw_of_mtable,1803 },1804 .probe = cpsw_probe,1805 .remove_new = cpsw_remove,1806};1807 1808module_platform_driver(cpsw_driver);1809 1810MODULE_LICENSE("GPL");1811MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>");1812MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>");1813MODULE_DESCRIPTION("TI CPSW Ethernet driver");1814