Back to home page

OSCL-LXR
 
 

     

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * Texas Instruments Ethernet Switch Driver
0004  *
0005  * Copyright (C) 2012 Texas Instruments
0006  *
0007  */
0008 
0009 #include <linux/kernel.h>
0010 #include <linux/io.h>
0011 #include <linux/clk.h>
0012 #include <linux/timer.h>
0013 #include <linux/module.h>
0014 #include <linux/platform_device.h>
0015 #include <linux/irqreturn.h>
0016 #include <linux/interrupt.h>
0017 #include <linux/if_ether.h>
0018 #include <linux/etherdevice.h>
0019 #include <linux/netdevice.h>
0020 #include <linux/net_tstamp.h>
0021 #include <linux/phy.h>
0022 #include <linux/phy/phy.h>
0023 #include <linux/workqueue.h>
0024 #include <linux/delay.h>
0025 #include <linux/pm_runtime.h>
0026 #include <linux/gpio/consumer.h>
0027 #include <linux/of.h>
0028 #include <linux/of_mdio.h>
0029 #include <linux/of_net.h>
0030 #include <linux/of_device.h>
0031 #include <linux/if_vlan.h>
0032 #include <linux/kmemleak.h>
0033 #include <linux/sys_soc.h>
0034 #include <net/page_pool.h>
0035 #include <linux/bpf.h>
0036 #include <linux/bpf_trace.h>
0037 
0038 #include <linux/pinctrl/consumer.h>
0039 #include <net/pkt_cls.h>
0040 
0041 #include "cpsw.h"
0042 #include "cpsw_ale.h"
0043 #include "cpsw_priv.h"
0044 #include "cpsw_sl.h"
0045 #include "cpts.h"
0046 #include "davinci_cpdma.h"
0047 
0048 #include <net/pkt_sched.h>
0049 
0050 static int debug_level;
0051 module_param(debug_level, int, 0);
0052 MODULE_PARM_DESC(debug_level, "cpsw debug level (NETIF_MSG bits)");
0053 
0054 static int ale_ageout = 10;
0055 module_param(ale_ageout, int, 0);
0056 MODULE_PARM_DESC(ale_ageout, "cpsw ale ageout interval (seconds)");
0057 
0058 static int rx_packet_max = CPSW_MAX_PACKET_SIZE;
0059 module_param(rx_packet_max, int, 0);
0060 MODULE_PARM_DESC(rx_packet_max, "maximum receive packet size (bytes)");
0061 
0062 static int descs_pool_size = CPSW_CPDMA_DESCS_POOL_SIZE_DEFAULT;
0063 module_param(descs_pool_size, int, 0444);
0064 MODULE_PARM_DESC(descs_pool_size, "Number of CPDMA CPPI descriptors in pool");
0065 
0066 #define for_each_slave(priv, func, arg...)              \
0067     do {                                \
0068         struct cpsw_slave *slave;               \
0069         struct cpsw_common *cpsw = (priv)->cpsw;        \
0070         int n;                          \
0071         if (cpsw->data.dual_emac)               \
0072             (func)((cpsw)->slaves + priv->emac_port, ##arg);\
0073         else                            \
0074             for (n = cpsw->data.slaves,         \
0075                     slave = cpsw->slaves;       \
0076                     n; n--)             \
0077                 (func)(slave++, ##arg);         \
0078     } while (0)
0079 
0080 static int cpsw_slave_index_priv(struct cpsw_common *cpsw,
0081                  struct cpsw_priv *priv)
0082 {
0083     return cpsw->data.dual_emac ? priv->emac_port : cpsw->data.active_slave;
0084 }
0085 
0086 static int cpsw_get_slave_port(u32 slave_num)
0087 {
0088     return slave_num + 1;
0089 }
0090 
0091 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
0092                     __be16 proto, u16 vid);
0093 
0094 static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
0095 {
0096     struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
0097     struct cpsw_ale *ale = cpsw->ale;
0098     int i;
0099 
0100     if (cpsw->data.dual_emac) {
0101         bool flag = false;
0102 
0103         /* Enabling promiscuous mode for one interface will be
0104          * common for both the interface as the interface shares
0105          * the same hardware resource.
0106          */
0107         for (i = 0; i < cpsw->data.slaves; i++)
0108             if (cpsw->slaves[i].ndev->flags & IFF_PROMISC)
0109                 flag = true;
0110 
0111         if (!enable && flag) {
0112             enable = true;
0113             dev_err(&ndev->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
0114         }
0115 
0116         if (enable) {
0117             /* Enable Bypass */
0118             cpsw_ale_control_set(ale, 0, ALE_BYPASS, 1);
0119 
0120             dev_dbg(&ndev->dev, "promiscuity enabled\n");
0121         } else {
0122             /* Disable Bypass */
0123             cpsw_ale_control_set(ale, 0, ALE_BYPASS, 0);
0124             dev_dbg(&ndev->dev, "promiscuity disabled\n");
0125         }
0126     } else {
0127         if (enable) {
0128             unsigned long timeout = jiffies + HZ;
0129 
0130             /* Disable Learn for all ports (host is port 0 and slaves are port 1 and up */
0131             for (i = 0; i <= cpsw->data.slaves; i++) {
0132                 cpsw_ale_control_set(ale, i,
0133                              ALE_PORT_NOLEARN, 1);
0134                 cpsw_ale_control_set(ale, i,
0135                              ALE_PORT_NO_SA_UPDATE, 1);
0136             }
0137 
0138             /* Clear All Untouched entries */
0139             cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
0140             do {
0141                 cpu_relax();
0142                 if (cpsw_ale_control_get(ale, 0, ALE_AGEOUT))
0143                     break;
0144             } while (time_after(timeout, jiffies));
0145             cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
0146 
0147             /* Clear all mcast from ALE */
0148             cpsw_ale_flush_multicast(ale, ALE_ALL_PORTS, -1);
0149             __hw_addr_ref_unsync_dev(&ndev->mc, ndev, NULL);
0150 
0151             /* Flood All Unicast Packets to Host port */
0152             cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 1);
0153             dev_dbg(&ndev->dev, "promiscuity enabled\n");
0154         } else {
0155             /* Don't Flood All Unicast Packets to Host port */
0156             cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 0);
0157 
0158             /* Enable Learn for all ports (host is port 0 and slaves are port 1 and up */
0159             for (i = 0; i <= cpsw->data.slaves; i++) {
0160                 cpsw_ale_control_set(ale, i,
0161                              ALE_PORT_NOLEARN, 0);
0162                 cpsw_ale_control_set(ale, i,
0163                              ALE_PORT_NO_SA_UPDATE, 0);
0164             }
0165             dev_dbg(&ndev->dev, "promiscuity disabled\n");
0166         }
0167     }
0168 }
0169 
0170 /**
0171  * cpsw_set_mc - adds multicast entry to the table if it's not added or deletes
0172  * if it's not deleted
0173  * @ndev: device to sync
0174  * @addr: address to be added or deleted
0175  * @vid: vlan id, if vid < 0 set/unset address for real device
0176  * @add: add address if the flag is set or remove otherwise
0177  */
0178 static int cpsw_set_mc(struct net_device *ndev, const u8 *addr,
0179                int vid, int add)
0180 {
0181     struct cpsw_priv *priv = netdev_priv(ndev);
0182     struct cpsw_common *cpsw = priv->cpsw;
0183     int mask, flags, ret;
0184 
0185     if (vid < 0) {
0186         if (cpsw->data.dual_emac)
0187             vid = cpsw->slaves[priv->emac_port].port_vlan;
0188         else
0189             vid = 0;
0190     }
0191 
0192     mask = cpsw->data.dual_emac ? ALE_PORT_HOST : ALE_ALL_PORTS;
0193     flags = vid ? ALE_VLAN : 0;
0194 
0195     if (add)
0196         ret = cpsw_ale_add_mcast(cpsw->ale, addr, mask, flags, vid, 0);
0197     else
0198         ret = cpsw_ale_del_mcast(cpsw->ale, addr, 0, flags, vid);
0199 
0200     return ret;
0201 }
0202 
0203 static int cpsw_update_vlan_mc(struct net_device *vdev, int vid, void *ctx)
0204 {
0205     struct addr_sync_ctx *sync_ctx = ctx;
0206     struct netdev_hw_addr *ha;
0207     int found = 0, ret = 0;
0208 
0209     if (!vdev || !(vdev->flags & IFF_UP))
0210         return 0;
0211 
0212     /* vlan address is relevant if its sync_cnt != 0 */
0213     netdev_for_each_mc_addr(ha, vdev) {
0214         if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
0215             found = ha->sync_cnt;
0216             break;
0217         }
0218     }
0219 
0220     if (found)
0221         sync_ctx->consumed++;
0222 
0223     if (sync_ctx->flush) {
0224         if (!found)
0225             cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
0226         return 0;
0227     }
0228 
0229     if (found)
0230         ret = cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 1);
0231 
0232     return ret;
0233 }
0234 
0235 static int cpsw_add_mc_addr(struct net_device *ndev, const u8 *addr, int num)
0236 {
0237     struct addr_sync_ctx sync_ctx;
0238     int ret;
0239 
0240     sync_ctx.consumed = 0;
0241     sync_ctx.addr = addr;
0242     sync_ctx.ndev = ndev;
0243     sync_ctx.flush = 0;
0244 
0245     ret = vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
0246     if (sync_ctx.consumed < num && !ret)
0247         ret = cpsw_set_mc(ndev, addr, -1, 1);
0248 
0249     return ret;
0250 }
0251 
0252 static int cpsw_del_mc_addr(struct net_device *ndev, const u8 *addr, int num)
0253 {
0254     struct addr_sync_ctx sync_ctx;
0255 
0256     sync_ctx.consumed = 0;
0257     sync_ctx.addr = addr;
0258     sync_ctx.ndev = ndev;
0259     sync_ctx.flush = 1;
0260 
0261     vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
0262     if (sync_ctx.consumed == num)
0263         cpsw_set_mc(ndev, addr, -1, 0);
0264 
0265     return 0;
0266 }
0267 
0268 static int cpsw_purge_vlan_mc(struct net_device *vdev, int vid, void *ctx)
0269 {
0270     struct addr_sync_ctx *sync_ctx = ctx;
0271     struct netdev_hw_addr *ha;
0272     int found = 0;
0273 
0274     if (!vdev || !(vdev->flags & IFF_UP))
0275         return 0;
0276 
0277     /* vlan address is relevant if its sync_cnt != 0 */
0278     netdev_for_each_mc_addr(ha, vdev) {
0279         if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
0280             found = ha->sync_cnt;
0281             break;
0282         }
0283     }
0284 
0285     if (!found)
0286         return 0;
0287 
0288     sync_ctx->consumed++;
0289     cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
0290     return 0;
0291 }
0292 
0293 static int cpsw_purge_all_mc(struct net_device *ndev, const u8 *addr, int num)
0294 {
0295     struct addr_sync_ctx sync_ctx;
0296 
0297     sync_ctx.addr = addr;
0298     sync_ctx.ndev = ndev;
0299     sync_ctx.consumed = 0;
0300 
0301     vlan_for_each(ndev, cpsw_purge_vlan_mc, &sync_ctx);
0302     if (sync_ctx.consumed < num)
0303         cpsw_set_mc(ndev, addr, -1, 0);
0304 
0305     return 0;
0306 }
0307 
0308 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
0309 {
0310     struct cpsw_priv *priv = netdev_priv(ndev);
0311     struct cpsw_common *cpsw = priv->cpsw;
0312     int slave_port = -1;
0313 
0314     if (cpsw->data.dual_emac)
0315         slave_port = priv->emac_port + 1;
0316 
0317     if (ndev->flags & IFF_PROMISC) {
0318         /* Enable promiscuous mode */
0319         cpsw_set_promiscious(ndev, true);
0320         cpsw_ale_set_allmulti(cpsw->ale, IFF_ALLMULTI, slave_port);
0321         return;
0322     } else {
0323         /* Disable promiscuous mode */
0324         cpsw_set_promiscious(ndev, false);
0325     }
0326 
0327     /* Restore allmulti on vlans if necessary */
0328     cpsw_ale_set_allmulti(cpsw->ale,
0329                   ndev->flags & IFF_ALLMULTI, slave_port);
0330 
0331     /* add/remove mcast address either for real netdev or for vlan */
0332     __hw_addr_ref_sync_dev(&ndev->mc, ndev, cpsw_add_mc_addr,
0333                    cpsw_del_mc_addr);
0334 }
0335 
0336 static unsigned int cpsw_rxbuf_total_len(unsigned int len)
0337 {
0338     len += CPSW_HEADROOM_NA;
0339     len += SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
0340 
0341     return SKB_DATA_ALIGN(len);
0342 }
0343 
0344 static void cpsw_rx_handler(void *token, int len, int status)
0345 {
0346     struct page     *new_page, *page = token;
0347     void            *pa = page_address(page);
0348     struct cpsw_meta_xdp    *xmeta = pa + CPSW_XMETA_OFFSET;
0349     struct cpsw_common  *cpsw = ndev_to_cpsw(xmeta->ndev);
0350     int         pkt_size = cpsw->rx_packet_max;
0351     int         ret = 0, port, ch = xmeta->ch;
0352     int         headroom = CPSW_HEADROOM_NA;
0353     struct net_device   *ndev = xmeta->ndev;
0354     struct cpsw_priv    *priv;
0355     struct page_pool    *pool;
0356     struct sk_buff      *skb;
0357     struct xdp_buff     xdp;
0358     dma_addr_t      dma;
0359 
0360     if (cpsw->data.dual_emac && status >= 0) {
0361         port = CPDMA_RX_SOURCE_PORT(status);
0362         if (port)
0363             ndev = cpsw->slaves[--port].ndev;
0364     }
0365 
0366     priv = netdev_priv(ndev);
0367     pool = cpsw->page_pool[ch];
0368     if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
0369         /* In dual emac mode check for all interfaces */
0370         if (cpsw->data.dual_emac && cpsw->usage_count &&
0371             (status >= 0)) {
0372             /* The packet received is for the interface which
0373              * is already down and the other interface is up
0374              * and running, instead of freeing which results
0375              * in reducing of the number of rx descriptor in
0376              * DMA engine, requeue page back to cpdma.
0377              */
0378             new_page = page;
0379             goto requeue;
0380         }
0381 
0382         /* the interface is going down, pages are purged */
0383         page_pool_recycle_direct(pool, page);
0384         return;
0385     }
0386 
0387     new_page = page_pool_dev_alloc_pages(pool);
0388     if (unlikely(!new_page)) {
0389         new_page = page;
0390         ndev->stats.rx_dropped++;
0391         goto requeue;
0392     }
0393 
0394     if (priv->xdp_prog) {
0395         int size = len;
0396 
0397         xdp_init_buff(&xdp, PAGE_SIZE, &priv->xdp_rxq[ch]);
0398         if (status & CPDMA_RX_VLAN_ENCAP) {
0399             headroom += CPSW_RX_VLAN_ENCAP_HDR_SIZE;
0400             size -= CPSW_RX_VLAN_ENCAP_HDR_SIZE;
0401         }
0402 
0403         xdp_prepare_buff(&xdp, pa, headroom, size, false);
0404 
0405         port = priv->emac_port + cpsw->data.dual_emac;
0406         ret = cpsw_run_xdp(priv, ch, &xdp, page, port, &len);
0407         if (ret != CPSW_XDP_PASS)
0408             goto requeue;
0409 
0410         headroom = xdp.data - xdp.data_hard_start;
0411 
0412         /* XDP prog can modify vlan tag, so can't use encap header */
0413         status &= ~CPDMA_RX_VLAN_ENCAP;
0414     }
0415 
0416     /* pass skb to netstack if no XDP prog or returned XDP_PASS */
0417     skb = build_skb(pa, cpsw_rxbuf_total_len(pkt_size));
0418     if (!skb) {
0419         ndev->stats.rx_dropped++;
0420         page_pool_recycle_direct(pool, page);
0421         goto requeue;
0422     }
0423 
0424     skb_reserve(skb, headroom);
0425     skb_put(skb, len);
0426     skb->dev = ndev;
0427     if (status & CPDMA_RX_VLAN_ENCAP)
0428         cpsw_rx_vlan_encap(skb);
0429     if (priv->rx_ts_enabled)
0430         cpts_rx_timestamp(cpsw->cpts, skb);
0431     skb->protocol = eth_type_trans(skb, ndev);
0432 
0433     /* mark skb for recycling */
0434     skb_mark_for_recycle(skb);
0435     netif_receive_skb(skb);
0436 
0437     ndev->stats.rx_bytes += len;
0438     ndev->stats.rx_packets++;
0439 
0440 requeue:
0441     xmeta = page_address(new_page) + CPSW_XMETA_OFFSET;
0442     xmeta->ndev = ndev;
0443     xmeta->ch = ch;
0444 
0445     dma = page_pool_get_dma_addr(new_page) + CPSW_HEADROOM_NA;
0446     ret = cpdma_chan_submit_mapped(cpsw->rxv[ch].ch, new_page, dma,
0447                        pkt_size, 0);
0448     if (ret < 0) {
0449         WARN_ON(ret == -ENOMEM);
0450         page_pool_recycle_direct(pool, new_page);
0451     }
0452 }
0453 
0454 static void _cpsw_adjust_link(struct cpsw_slave *slave,
0455                   struct cpsw_priv *priv, bool *link)
0456 {
0457     struct phy_device   *phy = slave->phy;
0458     u32         mac_control = 0;
0459     u32         slave_port;
0460     struct cpsw_common *cpsw = priv->cpsw;
0461 
0462     if (!phy)
0463         return;
0464 
0465     slave_port = cpsw_get_slave_port(slave->slave_num);
0466 
0467     if (phy->link) {
0468         mac_control = CPSW_SL_CTL_GMII_EN;
0469 
0470         if (phy->speed == 1000)
0471             mac_control |= CPSW_SL_CTL_GIG;
0472         if (phy->duplex)
0473             mac_control |= CPSW_SL_CTL_FULLDUPLEX;
0474 
0475         /* set speed_in input in case RMII mode is used in 100Mbps */
0476         if (phy->speed == 100)
0477             mac_control |= CPSW_SL_CTL_IFCTL_A;
0478         /* in band mode only works in 10Mbps RGMII mode */
0479         else if ((phy->speed == 10) && phy_interface_is_rgmii(phy))
0480             mac_control |= CPSW_SL_CTL_EXT_EN; /* In Band mode */
0481 
0482         if (priv->rx_pause)
0483             mac_control |= CPSW_SL_CTL_RX_FLOW_EN;
0484 
0485         if (priv->tx_pause)
0486             mac_control |= CPSW_SL_CTL_TX_FLOW_EN;
0487 
0488         if (mac_control != slave->mac_control)
0489             cpsw_sl_ctl_set(slave->mac_sl, mac_control);
0490 
0491         /* enable forwarding */
0492         cpsw_ale_control_set(cpsw->ale, slave_port,
0493                      ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
0494 
0495         *link = true;
0496 
0497         if (priv->shp_cfg_speed &&
0498             priv->shp_cfg_speed != slave->phy->speed &&
0499             !cpsw_shp_is_off(priv))
0500             dev_warn(priv->dev,
0501                  "Speed was changed, CBS shaper speeds are changed!");
0502     } else {
0503         mac_control = 0;
0504         /* disable forwarding */
0505         cpsw_ale_control_set(cpsw->ale, slave_port,
0506                      ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
0507 
0508         cpsw_sl_wait_for_idle(slave->mac_sl, 100);
0509 
0510         cpsw_sl_ctl_reset(slave->mac_sl);
0511     }
0512 
0513     if (mac_control != slave->mac_control)
0514         phy_print_status(phy);
0515 
0516     slave->mac_control = mac_control;
0517 }
0518 
0519 static void cpsw_adjust_link(struct net_device *ndev)
0520 {
0521     struct cpsw_priv    *priv = netdev_priv(ndev);
0522     struct cpsw_common  *cpsw = priv->cpsw;
0523     bool            link = false;
0524 
0525     for_each_slave(priv, _cpsw_adjust_link, priv, &link);
0526 
0527     if (link) {
0528         if (cpsw_need_resplit(cpsw))
0529             cpsw_split_res(cpsw);
0530 
0531         netif_carrier_on(ndev);
0532         if (netif_running(ndev))
0533             netif_tx_wake_all_queues(ndev);
0534     } else {
0535         netif_carrier_off(ndev);
0536         netif_tx_stop_all_queues(ndev);
0537     }
0538 }
0539 
0540 static inline void cpsw_add_dual_emac_def_ale_entries(
0541         struct cpsw_priv *priv, struct cpsw_slave *slave,
0542         u32 slave_port)
0543 {
0544     struct cpsw_common *cpsw = priv->cpsw;
0545     u32 port_mask = 1 << slave_port | ALE_PORT_HOST;
0546 
0547     if (cpsw->version == CPSW_VERSION_1)
0548         slave_write(slave, slave->port_vlan, CPSW1_PORT_VLAN);
0549     else
0550         slave_write(slave, slave->port_vlan, CPSW2_PORT_VLAN);
0551     cpsw_ale_add_vlan(cpsw->ale, slave->port_vlan, port_mask,
0552               port_mask, port_mask, 0);
0553     cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
0554                ALE_PORT_HOST, ALE_VLAN, slave->port_vlan, 0);
0555     cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
0556                HOST_PORT_NUM, ALE_VLAN |
0557                ALE_SECURE, slave->port_vlan);
0558     cpsw_ale_control_set(cpsw->ale, slave_port,
0559                  ALE_PORT_DROP_UNKNOWN_VLAN, 1);
0560 }
0561 
0562 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
0563 {
0564     u32 slave_port;
0565     struct phy_device *phy;
0566     struct cpsw_common *cpsw = priv->cpsw;
0567 
0568     cpsw_sl_reset(slave->mac_sl, 100);
0569     cpsw_sl_ctl_reset(slave->mac_sl);
0570 
0571     /* setup priority mapping */
0572     cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_PRI_MAP,
0573               RX_PRIORITY_MAPPING);
0574 
0575     switch (cpsw->version) {
0576     case CPSW_VERSION_1:
0577         slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
0578         /* Increase RX FIFO size to 5 for supporting fullduplex
0579          * flow control mode
0580          */
0581         slave_write(slave,
0582                 (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
0583                 CPSW_MAX_BLKS_RX, CPSW1_MAX_BLKS);
0584         break;
0585     case CPSW_VERSION_2:
0586     case CPSW_VERSION_3:
0587     case CPSW_VERSION_4:
0588         slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
0589         /* Increase RX FIFO size to 5 for supporting fullduplex
0590          * flow control mode
0591          */
0592         slave_write(slave,
0593                 (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
0594                 CPSW_MAX_BLKS_RX, CPSW2_MAX_BLKS);
0595         break;
0596     }
0597 
0598     /* setup max packet size, and mac address */
0599     cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_MAXLEN,
0600               cpsw->rx_packet_max);
0601     cpsw_set_slave_mac(slave, priv);
0602 
0603     slave->mac_control = 0; /* no link yet */
0604 
0605     slave_port = cpsw_get_slave_port(slave->slave_num);
0606 
0607     if (cpsw->data.dual_emac)
0608         cpsw_add_dual_emac_def_ale_entries(priv, slave, slave_port);
0609     else
0610         cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
0611                    1 << slave_port, 0, 0, ALE_MCAST_FWD_2);
0612 
0613     if (slave->data->phy_node) {
0614         phy = of_phy_connect(priv->ndev, slave->data->phy_node,
0615                  &cpsw_adjust_link, 0, slave->data->phy_if);
0616         if (!phy) {
0617             dev_err(priv->dev, "phy \"%pOF\" not found on slave %d\n",
0618                 slave->data->phy_node,
0619                 slave->slave_num);
0620             return;
0621         }
0622     } else {
0623         phy = phy_connect(priv->ndev, slave->data->phy_id,
0624                  &cpsw_adjust_link, slave->data->phy_if);
0625         if (IS_ERR(phy)) {
0626             dev_err(priv->dev,
0627                 "phy \"%s\" not found on slave %d, err %ld\n",
0628                 slave->data->phy_id, slave->slave_num,
0629                 PTR_ERR(phy));
0630             return;
0631         }
0632     }
0633 
0634     slave->phy = phy;
0635 
0636     phy_attached_info(slave->phy);
0637 
0638     phy_start(slave->phy);
0639 
0640     /* Configure GMII_SEL register */
0641     if (!IS_ERR(slave->data->ifphy))
0642         phy_set_mode_ext(slave->data->ifphy, PHY_MODE_ETHERNET,
0643                  slave->data->phy_if);
0644     else
0645         cpsw_phy_sel(cpsw->dev, slave->phy->interface,
0646                  slave->slave_num);
0647 }
0648 
0649 static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)
0650 {
0651     struct cpsw_common *cpsw = priv->cpsw;
0652     const int vlan = cpsw->data.default_vlan;
0653     u32 reg;
0654     int i;
0655     int unreg_mcast_mask;
0656 
0657     reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
0658            CPSW2_PORT_VLAN;
0659 
0660     writel(vlan, &cpsw->host_port_regs->port_vlan);
0661 
0662     for (i = 0; i < cpsw->data.slaves; i++)
0663         slave_write(cpsw->slaves + i, vlan, reg);
0664 
0665     if (priv->ndev->flags & IFF_ALLMULTI)
0666         unreg_mcast_mask = ALE_ALL_PORTS;
0667     else
0668         unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
0669 
0670     cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS,
0671               ALE_ALL_PORTS, ALE_ALL_PORTS,
0672               unreg_mcast_mask);
0673 }
0674 
0675 static void cpsw_init_host_port(struct cpsw_priv *priv)
0676 {
0677     u32 fifo_mode;
0678     u32 control_reg;
0679     struct cpsw_common *cpsw = priv->cpsw;
0680 
0681     /* soft reset the controller and initialize ale */
0682     soft_reset("cpsw", &cpsw->regs->soft_reset);
0683     cpsw_ale_start(cpsw->ale);
0684 
0685     /* switch to vlan unaware mode */
0686     cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_VLAN_AWARE,
0687                  CPSW_ALE_VLAN_AWARE);
0688     control_reg = readl(&cpsw->regs->control);
0689     control_reg |= CPSW_VLAN_AWARE | CPSW_RX_VLAN_ENCAP;
0690     writel(control_reg, &cpsw->regs->control);
0691     fifo_mode = (cpsw->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :
0692              CPSW_FIFO_NORMAL_MODE;
0693     writel(fifo_mode, &cpsw->host_port_regs->tx_in_ctl);
0694 
0695     /* setup host port priority mapping */
0696     writel_relaxed(CPDMA_TX_PRIORITY_MAP,
0697                &cpsw->host_port_regs->cpdma_tx_pri_map);
0698     writel_relaxed(0, &cpsw->host_port_regs->cpdma_rx_chan_map);
0699 
0700     cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
0701                  ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
0702 
0703     if (!cpsw->data.dual_emac) {
0704         cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
0705                    0, 0);
0706         cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
0707                    ALE_PORT_HOST, 0, 0, ALE_MCAST_FWD_2);
0708     }
0709 }
0710 
0711 static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_common *cpsw)
0712 {
0713     u32 slave_port;
0714 
0715     slave_port = cpsw_get_slave_port(slave->slave_num);
0716 
0717     if (!slave->phy)
0718         return;
0719     phy_stop(slave->phy);
0720     phy_disconnect(slave->phy);
0721     slave->phy = NULL;
0722     cpsw_ale_control_set(cpsw->ale, slave_port,
0723                  ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
0724     cpsw_sl_reset(slave->mac_sl, 100);
0725     cpsw_sl_ctl_reset(slave->mac_sl);
0726 }
0727 
0728 static int cpsw_restore_vlans(struct net_device *vdev, int vid, void *arg)
0729 {
0730     struct cpsw_priv *priv = arg;
0731 
0732     if (!vdev)
0733         return 0;
0734 
0735     cpsw_ndo_vlan_rx_add_vid(priv->ndev, 0, vid);
0736     return 0;
0737 }
0738 
0739 /* restore resources after port reset */
0740 static void cpsw_restore(struct cpsw_priv *priv)
0741 {
0742     /* restore vlan configurations */
0743     vlan_for_each(priv->ndev, cpsw_restore_vlans, priv);
0744 
0745     /* restore MQPRIO offload */
0746     for_each_slave(priv, cpsw_mqprio_resume, priv);
0747 
0748     /* restore CBS offload */
0749     for_each_slave(priv, cpsw_cbs_resume, priv);
0750 }
0751 
0752 static int cpsw_ndo_open(struct net_device *ndev)
0753 {
0754     struct cpsw_priv *priv = netdev_priv(ndev);
0755     struct cpsw_common *cpsw = priv->cpsw;
0756     int ret;
0757     u32 reg;
0758 
0759     ret = pm_runtime_resume_and_get(cpsw->dev);
0760     if (ret < 0)
0761         return ret;
0762 
0763     netif_carrier_off(ndev);
0764 
0765     /* Notify the stack of the actual queue counts. */
0766     ret = netif_set_real_num_tx_queues(ndev, cpsw->tx_ch_num);
0767     if (ret) {
0768         dev_err(priv->dev, "cannot set real number of tx queues\n");
0769         goto err_cleanup;
0770     }
0771 
0772     ret = netif_set_real_num_rx_queues(ndev, cpsw->rx_ch_num);
0773     if (ret) {
0774         dev_err(priv->dev, "cannot set real number of rx queues\n");
0775         goto err_cleanup;
0776     }
0777 
0778     reg = cpsw->version;
0779 
0780     dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
0781          CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
0782          CPSW_RTL_VERSION(reg));
0783 
0784     /* Initialize host and slave ports */
0785     if (!cpsw->usage_count)
0786         cpsw_init_host_port(priv);
0787     for_each_slave(priv, cpsw_slave_open, priv);
0788 
0789     /* Add default VLAN */
0790     if (!cpsw->data.dual_emac)
0791         cpsw_add_default_vlan(priv);
0792     else
0793         cpsw_ale_add_vlan(cpsw->ale, cpsw->data.default_vlan,
0794                   ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0);
0795 
0796     /* initialize shared resources for every ndev */
0797     if (!cpsw->usage_count) {
0798         /* disable priority elevation */
0799         writel_relaxed(0, &cpsw->regs->ptype);
0800 
0801         /* enable statistics collection only on all ports */
0802         writel_relaxed(0x7, &cpsw->regs->stat_port_en);
0803 
0804         /* Enable internal fifo flow control */
0805         writel(0x7, &cpsw->regs->flow_control);
0806 
0807         napi_enable(&cpsw->napi_rx);
0808         napi_enable(&cpsw->napi_tx);
0809 
0810         if (cpsw->tx_irq_disabled) {
0811             cpsw->tx_irq_disabled = false;
0812             enable_irq(cpsw->irqs_table[1]);
0813         }
0814 
0815         if (cpsw->rx_irq_disabled) {
0816             cpsw->rx_irq_disabled = false;
0817             enable_irq(cpsw->irqs_table[0]);
0818         }
0819 
0820         /* create rxqs for both infs in dual mac as they use same pool
0821          * and must be destroyed together when no users.
0822          */
0823         ret = cpsw_create_xdp_rxqs(cpsw);
0824         if (ret < 0)
0825             goto err_cleanup;
0826 
0827         ret = cpsw_fill_rx_channels(priv);
0828         if (ret < 0)
0829             goto err_cleanup;
0830 
0831         if (cpsw->cpts) {
0832             if (cpts_register(cpsw->cpts))
0833                 dev_err(priv->dev, "error registering cpts device\n");
0834             else
0835                 writel(0x10, &cpsw->wr_regs->misc_en);
0836         }
0837     }
0838 
0839     cpsw_restore(priv);
0840 
0841     /* Enable Interrupt pacing if configured */
0842     if (cpsw->coal_intvl != 0) {
0843         struct ethtool_coalesce coal;
0844 
0845         coal.rx_coalesce_usecs = cpsw->coal_intvl;
0846         cpsw_set_coalesce(ndev, &coal, NULL, NULL);
0847     }
0848 
0849     cpdma_ctlr_start(cpsw->dma);
0850     cpsw_intr_enable(cpsw);
0851     cpsw->usage_count++;
0852 
0853     return 0;
0854 
0855 err_cleanup:
0856     if (!cpsw->usage_count) {
0857         cpdma_ctlr_stop(cpsw->dma);
0858         cpsw_destroy_xdp_rxqs(cpsw);
0859     }
0860 
0861     for_each_slave(priv, cpsw_slave_stop, cpsw);
0862     pm_runtime_put_sync(cpsw->dev);
0863     netif_carrier_off(priv->ndev);
0864     return ret;
0865 }
0866 
0867 static int cpsw_ndo_stop(struct net_device *ndev)
0868 {
0869     struct cpsw_priv *priv = netdev_priv(ndev);
0870     struct cpsw_common *cpsw = priv->cpsw;
0871 
0872     cpsw_info(priv, ifdown, "shutting down cpsw device\n");
0873     __hw_addr_ref_unsync_dev(&ndev->mc, ndev, cpsw_purge_all_mc);
0874     netif_tx_stop_all_queues(priv->ndev);
0875     netif_carrier_off(priv->ndev);
0876 
0877     if (cpsw->usage_count <= 1) {
0878         napi_disable(&cpsw->napi_rx);
0879         napi_disable(&cpsw->napi_tx);
0880         cpts_unregister(cpsw->cpts);
0881         cpsw_intr_disable(cpsw);
0882         cpdma_ctlr_stop(cpsw->dma);
0883         cpsw_ale_stop(cpsw->ale);
0884         cpsw_destroy_xdp_rxqs(cpsw);
0885     }
0886     for_each_slave(priv, cpsw_slave_stop, cpsw);
0887 
0888     if (cpsw_need_resplit(cpsw))
0889         cpsw_split_res(cpsw);
0890 
0891     cpsw->usage_count--;
0892     pm_runtime_put_sync(cpsw->dev);
0893     return 0;
0894 }
0895 
0896 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
0897                        struct net_device *ndev)
0898 {
0899     struct cpsw_priv *priv = netdev_priv(ndev);
0900     struct cpsw_common *cpsw = priv->cpsw;
0901     struct cpts *cpts = cpsw->cpts;
0902     struct netdev_queue *txq;
0903     struct cpdma_chan *txch;
0904     int ret, q_idx;
0905 
0906     if (skb_put_padto(skb, CPSW_MIN_PACKET_SIZE)) {
0907         cpsw_err(priv, tx_err, "packet pad failed\n");
0908         ndev->stats.tx_dropped++;
0909         return NET_XMIT_DROP;
0910     }
0911 
0912     if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
0913         priv->tx_ts_enabled && cpts_can_timestamp(cpts, skb))
0914         skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
0915 
0916     q_idx = skb_get_queue_mapping(skb);
0917     if (q_idx >= cpsw->tx_ch_num)
0918         q_idx = q_idx % cpsw->tx_ch_num;
0919 
0920     txch = cpsw->txv[q_idx].ch;
0921     txq = netdev_get_tx_queue(ndev, q_idx);
0922     skb_tx_timestamp(skb);
0923     ret = cpdma_chan_submit(txch, skb, skb->data, skb->len,
0924                 priv->emac_port + cpsw->data.dual_emac);
0925     if (unlikely(ret != 0)) {
0926         cpsw_err(priv, tx_err, "desc submit failed\n");
0927         goto fail;
0928     }
0929 
0930     /* If there is no more tx desc left free then we need to
0931      * tell the kernel to stop sending us tx frames.
0932      */
0933     if (unlikely(!cpdma_check_free_tx_desc(txch))) {
0934         netif_tx_stop_queue(txq);
0935 
0936         /* Barrier, so that stop_queue visible to other cpus */
0937         smp_mb__after_atomic();
0938 
0939         if (cpdma_check_free_tx_desc(txch))
0940             netif_tx_wake_queue(txq);
0941     }
0942 
0943     return NETDEV_TX_OK;
0944 fail:
0945     ndev->stats.tx_dropped++;
0946     netif_tx_stop_queue(txq);
0947 
0948     /* Barrier, so that stop_queue visible to other cpus */
0949     smp_mb__after_atomic();
0950 
0951     if (cpdma_check_free_tx_desc(txch))
0952         netif_tx_wake_queue(txq);
0953 
0954     return NETDEV_TX_BUSY;
0955 }
0956 
0957 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
0958 {
0959     struct cpsw_priv *priv = netdev_priv(ndev);
0960     struct sockaddr *addr = (struct sockaddr *)p;
0961     struct cpsw_common *cpsw = priv->cpsw;
0962     int flags = 0;
0963     u16 vid = 0;
0964     int ret;
0965 
0966     if (!is_valid_ether_addr(addr->sa_data))
0967         return -EADDRNOTAVAIL;
0968 
0969     ret = pm_runtime_resume_and_get(cpsw->dev);
0970     if (ret < 0)
0971         return ret;
0972 
0973     if (cpsw->data.dual_emac) {
0974         vid = cpsw->slaves[priv->emac_port].port_vlan;
0975         flags = ALE_VLAN;
0976     }
0977 
0978     cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
0979                flags, vid);
0980     cpsw_ale_add_ucast(cpsw->ale, addr->sa_data, HOST_PORT_NUM,
0981                flags, vid);
0982 
0983     memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
0984     eth_hw_addr_set(ndev, priv->mac_addr);
0985     for_each_slave(priv, cpsw_set_slave_mac, priv);
0986 
0987     pm_runtime_put(cpsw->dev);
0988 
0989     return 0;
0990 }
0991 
0992 static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
0993                 unsigned short vid)
0994 {
0995     int ret;
0996     int unreg_mcast_mask = 0;
0997     int mcast_mask;
0998     u32 port_mask;
0999     struct cpsw_common *cpsw = priv->cpsw;
1000 
1001     if (cpsw->data.dual_emac) {
1002         port_mask = (1 << (priv->emac_port + 1)) | ALE_PORT_HOST;
1003 
1004         mcast_mask = ALE_PORT_HOST;
1005         if (priv->ndev->flags & IFF_ALLMULTI)
1006             unreg_mcast_mask = mcast_mask;
1007     } else {
1008         port_mask = ALE_ALL_PORTS;
1009         mcast_mask = port_mask;
1010 
1011         if (priv->ndev->flags & IFF_ALLMULTI)
1012             unreg_mcast_mask = ALE_ALL_PORTS;
1013         else
1014             unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
1015     }
1016 
1017     ret = cpsw_ale_add_vlan(cpsw->ale, vid, port_mask, 0, port_mask,
1018                 unreg_mcast_mask);
1019     if (ret != 0)
1020         return ret;
1021 
1022     ret = cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
1023                  HOST_PORT_NUM, ALE_VLAN, vid);
1024     if (ret != 0)
1025         goto clean_vid;
1026 
1027     ret = cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
1028                  mcast_mask, ALE_VLAN, vid, 0);
1029     if (ret != 0)
1030         goto clean_vlan_ucast;
1031     return 0;
1032 
1033 clean_vlan_ucast:
1034     cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1035                HOST_PORT_NUM, ALE_VLAN, vid);
1036 clean_vid:
1037     cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1038     return ret;
1039 }
1040 
1041 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1042                     __be16 proto, u16 vid)
1043 {
1044     struct cpsw_priv *priv = netdev_priv(ndev);
1045     struct cpsw_common *cpsw = priv->cpsw;
1046     int ret;
1047 
1048     if (vid == cpsw->data.default_vlan)
1049         return 0;
1050 
1051     ret = pm_runtime_resume_and_get(cpsw->dev);
1052     if (ret < 0)
1053         return ret;
1054 
1055     if (cpsw->data.dual_emac) {
1056         /* In dual EMAC, reserved VLAN id should not be used for
1057          * creating VLAN interfaces as this can break the dual
1058          * EMAC port separation
1059          */
1060         int i;
1061 
1062         for (i = 0; i < cpsw->data.slaves; i++) {
1063             if (vid == cpsw->slaves[i].port_vlan) {
1064                 ret = -EINVAL;
1065                 goto err;
1066             }
1067         }
1068     }
1069 
1070     dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1071     ret = cpsw_add_vlan_ale_entry(priv, vid);
1072 err:
1073     pm_runtime_put(cpsw->dev);
1074     return ret;
1075 }
1076 
1077 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1078                      __be16 proto, u16 vid)
1079 {
1080     struct cpsw_priv *priv = netdev_priv(ndev);
1081     struct cpsw_common *cpsw = priv->cpsw;
1082     int ret;
1083 
1084     if (vid == cpsw->data.default_vlan)
1085         return 0;
1086 
1087     ret = pm_runtime_resume_and_get(cpsw->dev);
1088     if (ret < 0)
1089         return ret;
1090 
1091     if (cpsw->data.dual_emac) {
1092         int i;
1093 
1094         for (i = 0; i < cpsw->data.slaves; i++) {
1095             if (vid == cpsw->slaves[i].port_vlan)
1096                 goto err;
1097         }
1098     }
1099 
1100     dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1101     ret = cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1102     ret |= cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1103                   HOST_PORT_NUM, ALE_VLAN, vid);
1104     ret |= cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
1105                   0, ALE_VLAN, vid);
1106     ret |= cpsw_ale_flush_multicast(cpsw->ale, ALE_PORT_HOST, vid);
1107 err:
1108     pm_runtime_put(cpsw->dev);
1109     return ret;
1110 }
1111 
1112 static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n,
1113                  struct xdp_frame **frames, u32 flags)
1114 {
1115     struct cpsw_priv *priv = netdev_priv(ndev);
1116     struct cpsw_common *cpsw = priv->cpsw;
1117     struct xdp_frame *xdpf;
1118     int i, nxmit = 0, port;
1119 
1120     if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
1121         return -EINVAL;
1122 
1123     for (i = 0; i < n; i++) {
1124         xdpf = frames[i];
1125         if (xdpf->len < CPSW_MIN_PACKET_SIZE)
1126             break;
1127 
1128         port = priv->emac_port + cpsw->data.dual_emac;
1129         if (cpsw_xdp_tx_frame(priv, xdpf, NULL, port))
1130             break;
1131         nxmit++;
1132     }
1133 
1134     return nxmit;
1135 }
1136 
1137 #ifdef CONFIG_NET_POLL_CONTROLLER
1138 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1139 {
1140     struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1141 
1142     cpsw_intr_disable(cpsw);
1143     cpsw_rx_interrupt(cpsw->irqs_table[0], cpsw);
1144     cpsw_tx_interrupt(cpsw->irqs_table[1], cpsw);
1145     cpsw_intr_enable(cpsw);
1146 }
1147 #endif
1148 
1149 static const struct net_device_ops cpsw_netdev_ops = {
1150     .ndo_open       = cpsw_ndo_open,
1151     .ndo_stop       = cpsw_ndo_stop,
1152     .ndo_start_xmit     = cpsw_ndo_start_xmit,
1153     .ndo_set_mac_address    = cpsw_ndo_set_mac_address,
1154     .ndo_eth_ioctl      = cpsw_ndo_ioctl,
1155     .ndo_validate_addr  = eth_validate_addr,
1156     .ndo_tx_timeout     = cpsw_ndo_tx_timeout,
1157     .ndo_set_rx_mode    = cpsw_ndo_set_rx_mode,
1158     .ndo_set_tx_maxrate = cpsw_ndo_set_tx_maxrate,
1159 #ifdef CONFIG_NET_POLL_CONTROLLER
1160     .ndo_poll_controller    = cpsw_ndo_poll_controller,
1161 #endif
1162     .ndo_vlan_rx_add_vid    = cpsw_ndo_vlan_rx_add_vid,
1163     .ndo_vlan_rx_kill_vid   = cpsw_ndo_vlan_rx_kill_vid,
1164     .ndo_setup_tc           = cpsw_ndo_setup_tc,
1165     .ndo_bpf        = cpsw_ndo_bpf,
1166     .ndo_xdp_xmit       = cpsw_ndo_xdp_xmit,
1167 };
1168 
1169 static void cpsw_get_drvinfo(struct net_device *ndev,
1170                  struct ethtool_drvinfo *info)
1171 {
1172     struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1173     struct platform_device  *pdev = to_platform_device(cpsw->dev);
1174 
1175     strlcpy(info->driver, "cpsw", sizeof(info->driver));
1176     strlcpy(info->version, "1.0", sizeof(info->version));
1177     strlcpy(info->bus_info, pdev->name, sizeof(info->bus_info));
1178 }
1179 
1180 static int cpsw_set_pauseparam(struct net_device *ndev,
1181                    struct ethtool_pauseparam *pause)
1182 {
1183     struct cpsw_priv *priv = netdev_priv(ndev);
1184     bool link;
1185 
1186     priv->rx_pause = pause->rx_pause ? true : false;
1187     priv->tx_pause = pause->tx_pause ? true : false;
1188 
1189     for_each_slave(priv, _cpsw_adjust_link, priv, &link);
1190     return 0;
1191 }
1192 
1193 static int cpsw_set_channels(struct net_device *ndev,
1194                  struct ethtool_channels *chs)
1195 {
1196     return cpsw_set_channels_common(ndev, chs, cpsw_rx_handler);
1197 }
1198 
1199 static const struct ethtool_ops cpsw_ethtool_ops = {
1200     .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
1201     .get_drvinfo    = cpsw_get_drvinfo,
1202     .get_msglevel   = cpsw_get_msglevel,
1203     .set_msglevel   = cpsw_set_msglevel,
1204     .get_link   = ethtool_op_get_link,
1205     .get_ts_info    = cpsw_get_ts_info,
1206     .get_coalesce   = cpsw_get_coalesce,
1207     .set_coalesce   = cpsw_set_coalesce,
1208     .get_sset_count     = cpsw_get_sset_count,
1209     .get_strings        = cpsw_get_strings,
1210     .get_ethtool_stats  = cpsw_get_ethtool_stats,
1211     .get_pauseparam     = cpsw_get_pauseparam,
1212     .set_pauseparam     = cpsw_set_pauseparam,
1213     .get_wol    = cpsw_get_wol,
1214     .set_wol    = cpsw_set_wol,
1215     .get_regs_len   = cpsw_get_regs_len,
1216     .get_regs   = cpsw_get_regs,
1217     .begin      = cpsw_ethtool_op_begin,
1218     .complete   = cpsw_ethtool_op_complete,
1219     .get_channels   = cpsw_get_channels,
1220     .set_channels   = cpsw_set_channels,
1221     .get_link_ksettings = cpsw_get_link_ksettings,
1222     .set_link_ksettings = cpsw_set_link_ksettings,
1223     .get_eee    = cpsw_get_eee,
1224     .set_eee    = cpsw_set_eee,
1225     .nway_reset = cpsw_nway_reset,
1226     .get_ringparam = cpsw_get_ringparam,
1227     .set_ringparam = cpsw_set_ringparam,
1228 };
1229 
1230 static int cpsw_probe_dt(struct cpsw_platform_data *data,
1231              struct platform_device *pdev)
1232 {
1233     struct device_node *node = pdev->dev.of_node;
1234     struct device_node *slave_node;
1235     int i = 0, ret;
1236     u32 prop;
1237 
1238     if (!node)
1239         return -EINVAL;
1240 
1241     if (of_property_read_u32(node, "slaves", &prop)) {
1242         dev_err(&pdev->dev, "Missing slaves property in the DT.\n");
1243         return -EINVAL;
1244     }
1245     data->slaves = prop;
1246 
1247     if (of_property_read_u32(node, "active_slave", &prop)) {
1248         dev_err(&pdev->dev, "Missing active_slave property in the DT.\n");
1249         return -EINVAL;
1250     }
1251     data->active_slave = prop;
1252 
1253     data->slave_data = devm_kcalloc(&pdev->dev,
1254                     data->slaves,
1255                     sizeof(struct cpsw_slave_data),
1256                     GFP_KERNEL);
1257     if (!data->slave_data)
1258         return -ENOMEM;
1259 
1260     if (of_property_read_u32(node, "cpdma_channels", &prop)) {
1261         dev_err(&pdev->dev, "Missing cpdma_channels property in the DT.\n");
1262         return -EINVAL;
1263     }
1264     data->channels = prop;
1265 
1266     if (of_property_read_u32(node, "bd_ram_size", &prop)) {
1267         dev_err(&pdev->dev, "Missing bd_ram_size property in the DT.\n");
1268         return -EINVAL;
1269     }
1270     data->bd_ram_size = prop;
1271 
1272     if (of_property_read_u32(node, "mac_control", &prop)) {
1273         dev_err(&pdev->dev, "Missing mac_control property in the DT.\n");
1274         return -EINVAL;
1275     }
1276     data->mac_control = prop;
1277 
1278     if (of_property_read_bool(node, "dual_emac"))
1279         data->dual_emac = true;
1280 
1281     /*
1282      * Populate all the child nodes here...
1283      */
1284     ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
1285     /* We do not want to force this, as in some cases may not have child */
1286     if (ret)
1287         dev_warn(&pdev->dev, "Doesn't have any child node\n");
1288 
1289     for_each_available_child_of_node(node, slave_node) {
1290         struct cpsw_slave_data *slave_data = data->slave_data + i;
1291         int lenp;
1292         const __be32 *parp;
1293 
1294         /* This is no slave child node, continue */
1295         if (!of_node_name_eq(slave_node, "slave"))
1296             continue;
1297 
1298         slave_data->ifphy = devm_of_phy_get(&pdev->dev, slave_node,
1299                             NULL);
1300         if (!IS_ENABLED(CONFIG_TI_CPSW_PHY_SEL) &&
1301             IS_ERR(slave_data->ifphy)) {
1302             ret = PTR_ERR(slave_data->ifphy);
1303             dev_err(&pdev->dev,
1304                 "%d: Error retrieving port phy: %d\n", i, ret);
1305             goto err_node_put;
1306         }
1307 
1308         slave_data->slave_node = slave_node;
1309         slave_data->phy_node = of_parse_phandle(slave_node,
1310                             "phy-handle", 0);
1311         parp = of_get_property(slave_node, "phy_id", &lenp);
1312         if (slave_data->phy_node) {
1313             dev_dbg(&pdev->dev,
1314                 "slave[%d] using phy-handle=\"%pOF\"\n",
1315                 i, slave_data->phy_node);
1316         } else if (of_phy_is_fixed_link(slave_node)) {
1317             /* In the case of a fixed PHY, the DT node associated
1318              * to the PHY is the Ethernet MAC DT node.
1319              */
1320             ret = of_phy_register_fixed_link(slave_node);
1321             if (ret) {
1322                 if (ret != -EPROBE_DEFER)
1323                     dev_err(&pdev->dev, "failed to register fixed-link phy: %d\n", ret);
1324                 goto err_node_put;
1325             }
1326             slave_data->phy_node = of_node_get(slave_node);
1327         } else if (parp) {
1328             u32 phyid;
1329             struct device_node *mdio_node;
1330             struct platform_device *mdio;
1331 
1332             if (lenp != (sizeof(__be32) * 2)) {
1333                 dev_err(&pdev->dev, "Invalid slave[%d] phy_id property\n", i);
1334                 goto no_phy_slave;
1335             }
1336             mdio_node = of_find_node_by_phandle(be32_to_cpup(parp));
1337             phyid = be32_to_cpup(parp+1);
1338             mdio = of_find_device_by_node(mdio_node);
1339             of_node_put(mdio_node);
1340             if (!mdio) {
1341                 dev_err(&pdev->dev, "Missing mdio platform device\n");
1342                 ret = -EINVAL;
1343                 goto err_node_put;
1344             }
1345             snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
1346                  PHY_ID_FMT, mdio->name, phyid);
1347             put_device(&mdio->dev);
1348         } else {
1349             dev_err(&pdev->dev,
1350                 "No slave[%d] phy_id, phy-handle, or fixed-link property\n",
1351                 i);
1352             goto no_phy_slave;
1353         }
1354         ret = of_get_phy_mode(slave_node, &slave_data->phy_if);
1355         if (ret) {
1356             dev_err(&pdev->dev, "Missing or malformed slave[%d] phy-mode property\n",
1357                 i);
1358             goto err_node_put;
1359         }
1360 
1361 no_phy_slave:
1362         ret = of_get_mac_address(slave_node, slave_data->mac_addr);
1363         if (ret) {
1364             ret = ti_cm_get_macid(&pdev->dev, i,
1365                           slave_data->mac_addr);
1366             if (ret)
1367                 goto err_node_put;
1368         }
1369         if (data->dual_emac) {
1370             if (of_property_read_u32(slave_node, "dual_emac_res_vlan",
1371                          &prop)) {
1372                 dev_err(&pdev->dev, "Missing dual_emac_res_vlan in DT.\n");
1373                 slave_data->dual_emac_res_vlan = i+1;
1374                 dev_err(&pdev->dev, "Using %d as Reserved VLAN for %d slave\n",
1375                     slave_data->dual_emac_res_vlan, i);
1376             } else {
1377                 slave_data->dual_emac_res_vlan = prop;
1378             }
1379         }
1380 
1381         i++;
1382         if (i == data->slaves) {
1383             ret = 0;
1384             goto err_node_put;
1385         }
1386     }
1387 
1388     return 0;
1389 
1390 err_node_put:
1391     of_node_put(slave_node);
1392     return ret;
1393 }
1394 
1395 static void cpsw_remove_dt(struct platform_device *pdev)
1396 {
1397     struct cpsw_common *cpsw = platform_get_drvdata(pdev);
1398     struct cpsw_platform_data *data = &cpsw->data;
1399     struct device_node *node = pdev->dev.of_node;
1400     struct device_node *slave_node;
1401     int i = 0;
1402 
1403     for_each_available_child_of_node(node, slave_node) {
1404         struct cpsw_slave_data *slave_data = &data->slave_data[i];
1405 
1406         if (!of_node_name_eq(slave_node, "slave"))
1407             continue;
1408 
1409         if (of_phy_is_fixed_link(slave_node))
1410             of_phy_deregister_fixed_link(slave_node);
1411 
1412         of_node_put(slave_data->phy_node);
1413 
1414         i++;
1415         if (i == data->slaves) {
1416             of_node_put(slave_node);
1417             break;
1418         }
1419     }
1420 
1421     of_platform_depopulate(&pdev->dev);
1422 }
1423 
1424 static int cpsw_probe_dual_emac(struct cpsw_priv *priv)
1425 {
1426     struct cpsw_common      *cpsw = priv->cpsw;
1427     struct cpsw_platform_data   *data = &cpsw->data;
1428     struct net_device       *ndev;
1429     struct cpsw_priv        *priv_sl2;
1430     int ret = 0;
1431 
1432     ndev = devm_alloc_etherdev_mqs(cpsw->dev, sizeof(struct cpsw_priv),
1433                        CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);
1434     if (!ndev) {
1435         dev_err(cpsw->dev, "cpsw: error allocating net_device\n");
1436         return -ENOMEM;
1437     }
1438 
1439     priv_sl2 = netdev_priv(ndev);
1440     priv_sl2->cpsw = cpsw;
1441     priv_sl2->ndev = ndev;
1442     priv_sl2->dev  = &ndev->dev;
1443     priv_sl2->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1444 
1445     if (is_valid_ether_addr(data->slave_data[1].mac_addr)) {
1446         memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,
1447             ETH_ALEN);
1448         dev_info(cpsw->dev, "cpsw: Detected MACID = %pM\n",
1449              priv_sl2->mac_addr);
1450     } else {
1451         eth_random_addr(priv_sl2->mac_addr);
1452         dev_info(cpsw->dev, "cpsw: Random MACID = %pM\n",
1453              priv_sl2->mac_addr);
1454     }
1455     eth_hw_addr_set(ndev, priv_sl2->mac_addr);
1456 
1457     priv_sl2->emac_port = 1;
1458     cpsw->slaves[1].ndev = ndev;
1459     ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
1460 
1461     ndev->netdev_ops = &cpsw_netdev_ops;
1462     ndev->ethtool_ops = &cpsw_ethtool_ops;
1463 
1464     /* register the network device */
1465     SET_NETDEV_DEV(ndev, cpsw->dev);
1466     ndev->dev.of_node = cpsw->slaves[1].data->slave_node;
1467     ret = register_netdev(ndev);
1468     if (ret)
1469         dev_err(cpsw->dev, "cpsw: error registering net device\n");
1470 
1471     return ret;
1472 }
1473 
1474 static const struct of_device_id cpsw_of_mtable[] = {
1475     { .compatible = "ti,cpsw"},
1476     { .compatible = "ti,am335x-cpsw"},
1477     { .compatible = "ti,am4372-cpsw"},
1478     { .compatible = "ti,dra7-cpsw"},
1479     { /* sentinel */ },
1480 };
1481 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
1482 
1483 static const struct soc_device_attribute cpsw_soc_devices[] = {
1484     { .family = "AM33xx", .revision = "ES1.0"},
1485     { /* sentinel */ }
1486 };
1487 
1488 static int cpsw_probe(struct platform_device *pdev)
1489 {
1490     struct device           *dev = &pdev->dev;
1491     struct clk          *clk;
1492     struct cpsw_platform_data   *data;
1493     struct net_device       *ndev;
1494     struct cpsw_priv        *priv;
1495     void __iomem            *ss_regs;
1496     struct resource         *ss_res;
1497     struct gpio_descs       *mode;
1498     const struct soc_device_attribute *soc;
1499     struct cpsw_common      *cpsw;
1500     int ret = 0, ch;
1501     int irq;
1502 
1503     cpsw = devm_kzalloc(dev, sizeof(struct cpsw_common), GFP_KERNEL);
1504     if (!cpsw)
1505         return -ENOMEM;
1506 
1507     platform_set_drvdata(pdev, cpsw);
1508     cpsw_slave_index = cpsw_slave_index_priv;
1509 
1510     cpsw->dev = dev;
1511 
1512     mode = devm_gpiod_get_array_optional(dev, "mode", GPIOD_OUT_LOW);
1513     if (IS_ERR(mode)) {
1514         ret = PTR_ERR(mode);
1515         dev_err(dev, "gpio request failed, ret %d\n", ret);
1516         return ret;
1517     }
1518 
1519     clk = devm_clk_get(dev, "fck");
1520     if (IS_ERR(clk)) {
1521         ret = PTR_ERR(clk);
1522         dev_err(dev, "fck is not found %d\n", ret);
1523         return ret;
1524     }
1525     cpsw->bus_freq_mhz = clk_get_rate(clk) / 1000000;
1526 
1527     ss_regs = devm_platform_get_and_ioremap_resource(pdev, 0, &ss_res);
1528     if (IS_ERR(ss_regs))
1529         return PTR_ERR(ss_regs);
1530     cpsw->regs = ss_regs;
1531 
1532     cpsw->wr_regs = devm_platform_ioremap_resource(pdev, 1);
1533     if (IS_ERR(cpsw->wr_regs))
1534         return PTR_ERR(cpsw->wr_regs);
1535 
1536     /* RX IRQ */
1537     irq = platform_get_irq(pdev, 1);
1538     if (irq < 0)
1539         return irq;
1540     cpsw->irqs_table[0] = irq;
1541 
1542     /* TX IRQ */
1543     irq = platform_get_irq(pdev, 2);
1544     if (irq < 0)
1545         return irq;
1546     cpsw->irqs_table[1] = irq;
1547 
1548     /* get misc irq*/
1549     irq = platform_get_irq(pdev, 3);
1550     if (irq <= 0)
1551         return irq;
1552     cpsw->misc_irq = irq;
1553 
1554     /*
1555      * This may be required here for child devices.
1556      */
1557     pm_runtime_enable(dev);
1558 
1559     /* Need to enable clocks with runtime PM api to access module
1560      * registers
1561      */
1562     ret = pm_runtime_resume_and_get(dev);
1563     if (ret < 0)
1564         goto clean_runtime_disable_ret;
1565 
1566     ret = cpsw_probe_dt(&cpsw->data, pdev);
1567     if (ret)
1568         goto clean_dt_ret;
1569 
1570     soc = soc_device_match(cpsw_soc_devices);
1571     if (soc)
1572         cpsw->quirk_irq = true;
1573 
1574     data = &cpsw->data;
1575     cpsw->slaves = devm_kcalloc(dev,
1576                     data->slaves, sizeof(struct cpsw_slave),
1577                     GFP_KERNEL);
1578     if (!cpsw->slaves) {
1579         ret = -ENOMEM;
1580         goto clean_dt_ret;
1581     }
1582 
1583     cpsw->rx_packet_max = max(rx_packet_max, CPSW_MAX_PACKET_SIZE);
1584     cpsw->descs_pool_size = descs_pool_size;
1585 
1586     ret = cpsw_init_common(cpsw, ss_regs, ale_ageout,
1587                    ss_res->start + CPSW2_BD_OFFSET,
1588                    descs_pool_size);
1589     if (ret)
1590         goto clean_dt_ret;
1591 
1592     ch = cpsw->quirk_irq ? 0 : 7;
1593     cpsw->txv[0].ch = cpdma_chan_create(cpsw->dma, ch, cpsw_tx_handler, 0);
1594     if (IS_ERR(cpsw->txv[0].ch)) {
1595         dev_err(dev, "error initializing tx dma channel\n");
1596         ret = PTR_ERR(cpsw->txv[0].ch);
1597         goto clean_cpts;
1598     }
1599 
1600     cpsw->rxv[0].ch = cpdma_chan_create(cpsw->dma, 0, cpsw_rx_handler, 1);
1601     if (IS_ERR(cpsw->rxv[0].ch)) {
1602         dev_err(dev, "error initializing rx dma channel\n");
1603         ret = PTR_ERR(cpsw->rxv[0].ch);
1604         goto clean_cpts;
1605     }
1606     cpsw_split_res(cpsw);
1607 
1608     /* setup netdev */
1609     ndev = devm_alloc_etherdev_mqs(dev, sizeof(struct cpsw_priv),
1610                        CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);
1611     if (!ndev) {
1612         dev_err(dev, "error allocating net_device\n");
1613         ret = -ENOMEM;
1614         goto clean_cpts;
1615     }
1616 
1617     priv = netdev_priv(ndev);
1618     priv->cpsw = cpsw;
1619     priv->ndev = ndev;
1620     priv->dev  = dev;
1621     priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1622     priv->emac_port = 0;
1623 
1624     if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {
1625         memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
1626         dev_info(dev, "Detected MACID = %pM\n", priv->mac_addr);
1627     } else {
1628         eth_random_addr(priv->mac_addr);
1629         dev_info(dev, "Random MACID = %pM\n", priv->mac_addr);
1630     }
1631 
1632     eth_hw_addr_set(ndev, priv->mac_addr);
1633 
1634     cpsw->slaves[0].ndev = ndev;
1635 
1636     ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
1637 
1638     ndev->netdev_ops = &cpsw_netdev_ops;
1639     ndev->ethtool_ops = &cpsw_ethtool_ops;
1640     netif_napi_add(ndev, &cpsw->napi_rx,
1641                cpsw->quirk_irq ? cpsw_rx_poll : cpsw_rx_mq_poll,
1642                NAPI_POLL_WEIGHT);
1643     netif_napi_add_tx(ndev, &cpsw->napi_tx,
1644               cpsw->quirk_irq ? cpsw_tx_poll : cpsw_tx_mq_poll);
1645 
1646     /* register the network device */
1647     SET_NETDEV_DEV(ndev, dev);
1648     ndev->dev.of_node = cpsw->slaves[0].data->slave_node;
1649     ret = register_netdev(ndev);
1650     if (ret) {
1651         dev_err(dev, "error registering net device\n");
1652         ret = -ENODEV;
1653         goto clean_cpts;
1654     }
1655 
1656     if (cpsw->data.dual_emac) {
1657         ret = cpsw_probe_dual_emac(priv);
1658         if (ret) {
1659             cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
1660             goto clean_unregister_netdev_ret;
1661         }
1662     }
1663 
1664     /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
1665      * MISC IRQs which are always kept disabled with this driver so
1666      * we will not request them.
1667      *
1668      * If anyone wants to implement support for those, make sure to
1669      * first request and append them to irqs_table array.
1670      */
1671     ret = devm_request_irq(dev, cpsw->irqs_table[0], cpsw_rx_interrupt,
1672                    0, dev_name(dev), cpsw);
1673     if (ret < 0) {
1674         dev_err(dev, "error attaching irq (%d)\n", ret);
1675         goto clean_unregister_netdev_ret;
1676     }
1677 
1678 
1679     ret = devm_request_irq(dev, cpsw->irqs_table[1], cpsw_tx_interrupt,
1680                    0, dev_name(&pdev->dev), cpsw);
1681     if (ret < 0) {
1682         dev_err(dev, "error attaching irq (%d)\n", ret);
1683         goto clean_unregister_netdev_ret;
1684     }
1685 
1686     if (!cpsw->cpts)
1687         goto skip_cpts;
1688 
1689     ret = devm_request_irq(&pdev->dev, cpsw->misc_irq, cpsw_misc_interrupt,
1690                    0, dev_name(&pdev->dev), cpsw);
1691     if (ret < 0) {
1692         dev_err(dev, "error attaching misc irq (%d)\n", ret);
1693         goto clean_unregister_netdev_ret;
1694     }
1695 
1696     /* Enable misc CPTS evnt_pend IRQ */
1697     cpts_set_irqpoll(cpsw->cpts, false);
1698 
1699 skip_cpts:
1700     cpsw_notice(priv, probe,
1701             "initialized device (regs %pa, irq %d, pool size %d)\n",
1702             &ss_res->start, cpsw->irqs_table[0], descs_pool_size);
1703 
1704     pm_runtime_put(&pdev->dev);
1705 
1706     return 0;
1707 
1708 clean_unregister_netdev_ret:
1709     unregister_netdev(ndev);
1710 clean_cpts:
1711     cpts_release(cpsw->cpts);
1712     cpdma_ctlr_destroy(cpsw->dma);
1713 clean_dt_ret:
1714     cpsw_remove_dt(pdev);
1715     pm_runtime_put_sync(&pdev->dev);
1716 clean_runtime_disable_ret:
1717     pm_runtime_disable(&pdev->dev);
1718     return ret;
1719 }
1720 
1721 static int cpsw_remove(struct platform_device *pdev)
1722 {
1723     struct cpsw_common *cpsw = platform_get_drvdata(pdev);
1724     int i, ret;
1725 
1726     ret = pm_runtime_resume_and_get(&pdev->dev);
1727     if (ret < 0)
1728         return ret;
1729 
1730     for (i = 0; i < cpsw->data.slaves; i++)
1731         if (cpsw->slaves[i].ndev)
1732             unregister_netdev(cpsw->slaves[i].ndev);
1733 
1734     cpts_release(cpsw->cpts);
1735     cpdma_ctlr_destroy(cpsw->dma);
1736     cpsw_remove_dt(pdev);
1737     pm_runtime_put_sync(&pdev->dev);
1738     pm_runtime_disable(&pdev->dev);
1739     return 0;
1740 }
1741 
1742 #ifdef CONFIG_PM_SLEEP
1743 static int cpsw_suspend(struct device *dev)
1744 {
1745     struct cpsw_common *cpsw = dev_get_drvdata(dev);
1746     int i;
1747 
1748     rtnl_lock();
1749 
1750     for (i = 0; i < cpsw->data.slaves; i++)
1751         if (cpsw->slaves[i].ndev)
1752             if (netif_running(cpsw->slaves[i].ndev))
1753                 cpsw_ndo_stop(cpsw->slaves[i].ndev);
1754 
1755     rtnl_unlock();
1756 
1757     /* Select sleep pin state */
1758     pinctrl_pm_select_sleep_state(dev);
1759 
1760     return 0;
1761 }
1762 
1763 static int cpsw_resume(struct device *dev)
1764 {
1765     struct cpsw_common *cpsw = dev_get_drvdata(dev);
1766     int i;
1767 
1768     /* Select default pin state */
1769     pinctrl_pm_select_default_state(dev);
1770 
1771     /* shut up ASSERT_RTNL() warning in netif_set_real_num_tx/rx_queues */
1772     rtnl_lock();
1773 
1774     for (i = 0; i < cpsw->data.slaves; i++)
1775         if (cpsw->slaves[i].ndev)
1776             if (netif_running(cpsw->slaves[i].ndev))
1777                 cpsw_ndo_open(cpsw->slaves[i].ndev);
1778 
1779     rtnl_unlock();
1780 
1781     return 0;
1782 }
1783 #endif
1784 
1785 static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);
1786 
1787 static struct platform_driver cpsw_driver = {
1788     .driver = {
1789         .name    = "cpsw",
1790         .pm  = &cpsw_pm_ops,
1791         .of_match_table = cpsw_of_mtable,
1792     },
1793     .probe = cpsw_probe,
1794     .remove = cpsw_remove,
1795 };
1796 
1797 module_platform_driver(cpsw_driver);
1798 
1799 MODULE_LICENSE("GPL");
1800 MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>");
1801 MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>");
1802 MODULE_DESCRIPTION("TI CPSW Ethernet driver");
[ Source navigation ] [ Diff markup ] [ Identifier search ] [ general search ]

This page was automatically generated by the 2.1.0 LXR engine.

The LXR team
Valid CSS 2.1! Valid HTML 4.01!