--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Texas Instruments Ethernet Switch Driver
+ *
+ * Copyright (C) 2019 Texas Instruments
+ */
+
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/timer.h>
+#include <linux/module.h>
+#include <linux/irqreturn.h>
+#include <linux/interrupt.h>
+#include <linux/if_ether.h>
+#include <linux/etherdevice.h>
+#include <linux/net_tstamp.h>
+#include <linux/phy.h>
+#include <linux/phy/phy.h>
+#include <linux/delay.h>
+#include <linux/pm_runtime.h>
+#include <linux/gpio/consumer.h>
+#include <linux/of.h>
+#include <linux/of_mdio.h>
+#include <linux/of_net.h>
+#include <linux/of_device.h>
+#include <linux/if_vlan.h>
+#include <linux/kmemleak.h>
+#include <linux/sys_soc.h>
+
+#include <net/page_pool.h>
+#include <net/pkt_cls.h>
+#include <net/devlink.h>
+
+#include "cpsw.h"
+#include "cpsw_ale.h"
+#include "cpsw_priv.h"
+#include "cpsw_sl.h"
+#include "cpts.h"
+#include "davinci_cpdma.h"
+
+#include <net/pkt_sched.h>
+
+static int debug_level;
+static int ale_ageout = CPSW_ALE_AGEOUT_DEFAULT;
+static int rx_packet_max = CPSW_MAX_PACKET_SIZE;
+static int descs_pool_size = CPSW_CPDMA_DESCS_POOL_SIZE_DEFAULT;
+
+struct cpsw_devlink {
+ struct cpsw_common *cpsw;
+};
+
+enum cpsw_devlink_param_id {
+ CPSW_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
+ CPSW_DL_PARAM_ALE_BYPASS,
+};
+
+/* struct cpsw_common is not needed, kept here for compatibility
+ * reasons witrh the old driver
+ */
+static int cpsw_slave_index_priv(struct cpsw_common *cpsw,
+ struct cpsw_priv *priv)
+{
+ if (priv->emac_port == HOST_PORT_NUM)
+ return -1;
+
+ return priv->emac_port - 1;
+}
+
+static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
+{
+ struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
+ bool enable_uni = false;
+ int i;
+
+ /* Enabling promiscuous mode for one interface will be
+ * common for both the interface as the interface shares
+ * the same hardware resource.
+ */
+ for (i = 0; i < cpsw->data.slaves; i++)
+ if (cpsw->slaves[i].ndev &&
+ (cpsw->slaves[i].ndev->flags & IFF_PROMISC))
+ enable_uni = true;
+
+ if (!enable && enable_uni) {
+ enable = enable_uni;
+ dev_dbg(cpsw->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
+ }
+
+ if (enable) {
+ /* Enable unknown unicast, reg/unreg mcast */
+ cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
+ ALE_P0_UNI_FLOOD, 1);
+
+ dev_dbg(cpsw->dev, "promiscuity enabled\n");
+ } else {
+ /* Disable unknown unicast */
+ cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
+ ALE_P0_UNI_FLOOD, 0);
+ dev_dbg(cpsw->dev, "promiscuity disabled\n");
+ }
+}
+
+/**
+ * cpsw_set_mc - adds multicast entry to the table if it's not added or deletes
+ * if it's not deleted
+ * @ndev: device to sync
+ * @addr: address to be added or deleted
+ * @vid: vlan id, if vid < 0 set/unset address for real device
+ * @add: add address if the flag is set or remove otherwise
+ */
+static int cpsw_set_mc(struct net_device *ndev, const u8 *addr,
+ int vid, int add)
+{
+ struct cpsw_priv *priv = netdev_priv(ndev);
+ struct cpsw_common *cpsw = priv->cpsw;
+ int mask, flags, ret, slave_no;
+
+ slave_no = cpsw_slave_index(cpsw, priv);
+ if (vid < 0)
+ vid = cpsw->slaves[slave_no].port_vlan;
+
+ mask = ALE_PORT_HOST;
+ flags = vid ? ALE_VLAN : 0;
+
+ if (add)
+ ret = cpsw_ale_add_mcast(cpsw->ale, addr, mask, flags, vid, 0);
+ else
+ ret = cpsw_ale_del_mcast(cpsw->ale, addr, 0, flags, vid);
+
+ return ret;
+}
+
+static int cpsw_update_vlan_mc(struct net_device *vdev, int vid, void *ctx)
+{
+ struct addr_sync_ctx *sync_ctx = ctx;
+ struct netdev_hw_addr *ha;
+ int found = 0, ret = 0;
+
+ if (!vdev || !(vdev->flags & IFF_UP))
+ return 0;
+
+ /* vlan address is relevant if its sync_cnt != 0 */
+ netdev_for_each_mc_addr(ha, vdev) {
+ if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
+ found = ha->sync_cnt;
+ break;
+ }
+ }
+
+ if (found)
+ sync_ctx->consumed++;
+
+ if (sync_ctx->flush) {
+ if (!found)
+ cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
+ return 0;
+ }
+
+ if (found)
+ ret = cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 1);
+
+ return ret;
+}
+
+static int cpsw_add_mc_addr(struct net_device *ndev, const u8 *addr, int num)
+{
+ struct addr_sync_ctx sync_ctx;
+ int ret;
+
+ sync_ctx.consumed = 0;
+ sync_ctx.addr = addr;
+ sync_ctx.ndev = ndev;
+ sync_ctx.flush = 0;
+
+ ret = vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
+ if (sync_ctx.consumed < num && !ret)
+ ret = cpsw_set_mc(ndev, addr, -1, 1);
+
+ return ret;
+}
+
+static int cpsw_del_mc_addr(struct net_device *ndev, const u8 *addr, int num)
+{
+ struct addr_sync_ctx sync_ctx;
+
+ sync_ctx.consumed = 0;
+ sync_ctx.addr = addr;
+ sync_ctx.ndev = ndev;
+ sync_ctx.flush = 1;
+
+ vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
+ if (sync_ctx.consumed == num)
+ cpsw_set_mc(ndev, addr, -1, 0);
+
+ return 0;
+}
+
+static int cpsw_purge_vlan_mc(struct net_device *vdev, int vid, void *ctx)
+{
+ struct addr_sync_ctx *sync_ctx = ctx;
+ struct netdev_hw_addr *ha;
+ int found = 0;
+
+ if (!vdev || !(vdev->flags & IFF_UP))
+ return 0;
+
+ /* vlan address is relevant if its sync_cnt != 0 */
+ netdev_for_each_mc_addr(ha, vdev) {
+ if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
+ found = ha->sync_cnt;
+ break;
+ }
+ }
+
+ if (!found)
+ return 0;
+
+ sync_ctx->consumed++;
+ cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
+ return 0;
+}
+
+static int cpsw_purge_all_mc(struct net_device *ndev, const u8 *addr, int num)
+{
+ struct addr_sync_ctx sync_ctx;
+
+ sync_ctx.addr = addr;
+ sync_ctx.ndev = ndev;
+ sync_ctx.consumed = 0;
+
+ vlan_for_each(ndev, cpsw_purge_vlan_mc, &sync_ctx);
+ if (sync_ctx.consumed < num)
+ cpsw_set_mc(ndev, addr, -1, 0);
+
+ return 0;
+}
+
+static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
+{
+ struct cpsw_priv *priv = netdev_priv(ndev);
+ struct cpsw_common *cpsw = priv->cpsw;
+
+ if (ndev->flags & IFF_PROMISC) {
+ /* Enable promiscuous mode */
+ cpsw_set_promiscious(ndev, true);
+ cpsw_ale_set_allmulti(cpsw->ale, IFF_ALLMULTI, priv->emac_port);
+ return;
+ }
+
+ /* Disable promiscuous mode */
+ cpsw_set_promiscious(ndev, false);
+
+ /* Restore allmulti on vlans if necessary */
+ cpsw_ale_set_allmulti(cpsw->ale,
+ ndev->flags & IFF_ALLMULTI, priv->emac_port);
+
+ /* add/remove mcast address either for real netdev or for vlan */
+ __hw_addr_ref_sync_dev(&ndev->mc, ndev, cpsw_add_mc_addr,
+ cpsw_del_mc_addr);
+}
+
+static unsigned int cpsw_rxbuf_total_len(unsigned int len)
+{
+ len += CPSW_HEADROOM;
+ len += SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
+
+ return SKB_DATA_ALIGN(len);
+}
+
+static void cpsw_rx_handler(void *token, int len, int status)
+{
+ struct page *new_page, *page = token;
+ void *pa = page_address(page);
+ int headroom = CPSW_HEADROOM;
+ struct cpsw_meta_xdp *xmeta;
+ struct cpsw_common *cpsw;
+ struct net_device *ndev;
+ int port, ch, pkt_size;
+ struct cpsw_priv *priv;
+ struct page_pool *pool;
+ struct sk_buff *skb;
+ struct xdp_buff xdp;
+ int ret = 0;
+ dma_addr_t dma;
+
+ xmeta = pa + CPSW_XMETA_OFFSET;
+ cpsw = ndev_to_cpsw(xmeta->ndev);
+ ndev = xmeta->ndev;
+ pkt_size = cpsw->rx_packet_max;
+ ch = xmeta->ch;
+
+ if (status >= 0) {
+ port = CPDMA_RX_SOURCE_PORT(status);
+ if (port)
+ ndev = cpsw->slaves[--port].ndev;
+ }
+
+ priv = netdev_priv(ndev);
+ pool = cpsw->page_pool[ch];
+
+ if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
+ /* In dual emac mode check for all interfaces */
+ if (cpsw->usage_count && status >= 0) {
+ /* The packet received is for the interface which
+ * is already down and the other interface is up
+ * and running, instead of freeing which results
+ * in reducing of the number of rx descriptor in
+ * DMA engine, requeue page back to cpdma.
+ */
+ new_page = page;
+ goto requeue;
+ }
+
+ /* the interface is going down, pages are purged */
+ page_pool_recycle_direct(pool, page);
+ return;
+ }
+
+ new_page = page_pool_dev_alloc_pages(pool);
+ if (unlikely(!new_page)) {
+ new_page = page;
+ ndev->stats.rx_dropped++;
+ goto requeue;
+ }
+
+ if (priv->xdp_prog) {
+ if (status & CPDMA_RX_VLAN_ENCAP) {
+ xdp.data = pa + CPSW_HEADROOM +
+ CPSW_RX_VLAN_ENCAP_HDR_SIZE;
+ xdp.data_end = xdp.data + len -
+ CPSW_RX_VLAN_ENCAP_HDR_SIZE;
+ } else {
+ xdp.data = pa + CPSW_HEADROOM;
+ xdp.data_end = xdp.data + len;
+ }
+
+ xdp_set_data_meta_invalid(&xdp);
+
+ xdp.data_hard_start = pa;
+ xdp.rxq = &priv->xdp_rxq[ch];
+
+ ret = cpsw_run_xdp(priv, ch, &xdp, page, priv->emac_port);
+ if (ret != CPSW_XDP_PASS)
+ goto requeue;
+
+ /* XDP prog might have changed packet data and boundaries */
+ len = xdp.data_end - xdp.data;
+ headroom = xdp.data - xdp.data_hard_start;
+
+ /* XDP prog can modify vlan tag, so can't use encap header */
+ status &= ~CPDMA_RX_VLAN_ENCAP;
+ }
+
+ /* pass skb to netstack if no XDP prog or returned XDP_PASS */
+ skb = build_skb(pa, cpsw_rxbuf_total_len(pkt_size));
+ if (!skb) {
+ ndev->stats.rx_dropped++;
+ page_pool_recycle_direct(pool, page);
+ goto requeue;
+ }
+
+ skb_reserve(skb, headroom);
+ skb_put(skb, len);
+ skb->dev = ndev;
+ if (status & CPDMA_RX_VLAN_ENCAP)
+ cpsw_rx_vlan_encap(skb);
+ if (priv->rx_ts_enabled)
+ cpts_rx_timestamp(cpsw->cpts, skb);
+ skb->protocol = eth_type_trans(skb, ndev);
+
+ /* unmap page as no netstack skb page recycling */
+ page_pool_release_page(pool, page);
+ netif_receive_skb(skb);
+
+ ndev->stats.rx_bytes += len;
+ ndev->stats.rx_packets++;
+
+requeue:
+ xmeta = page_address(new_page) + CPSW_XMETA_OFFSET;
+ xmeta->ndev = ndev;
+ xmeta->ch = ch;
+
+ dma = page_pool_get_dma_addr(new_page) + CPSW_HEADROOM;
+ ret = cpdma_chan_submit_mapped(cpsw->rxv[ch].ch, new_page, dma,
+ pkt_size, 0);
+ if (ret < 0) {
+ WARN_ON(ret == -ENOMEM);
+ page_pool_recycle_direct(pool, new_page);
+ }
+}
+
+static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
+ unsigned short vid)
+{
+ struct cpsw_common *cpsw = priv->cpsw;
+ int unreg_mcast_mask = 0;
+ int mcast_mask;
+ u32 port_mask;
+ int ret;
+
+ port_mask = (1 << priv->emac_port) | ALE_PORT_HOST;
+
+ mcast_mask = ALE_PORT_HOST;
+ if (priv->ndev->flags & IFF_ALLMULTI)
+ unreg_mcast_mask = mcast_mask;
+
+ ret = cpsw_ale_add_vlan(cpsw->ale, vid, port_mask, 0, port_mask,
+ unreg_mcast_mask);
+ if (ret != 0)
+ return ret;
+
+ ret = cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
+ HOST_PORT_NUM, ALE_VLAN, vid);
+ if (ret != 0)
+ goto clean_vid;
+
+ ret = cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
+ mcast_mask, ALE_VLAN, vid, 0);
+ if (ret != 0)
+ goto clean_vlan_ucast;
+ return 0;
+
+clean_vlan_ucast:
+ cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
+ HOST_PORT_NUM, ALE_VLAN, vid);
+clean_vid:
+ cpsw_ale_del_vlan(cpsw->ale, vid, 0);
+ return ret;
+}
+
+static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
+ __be16 proto, u16 vid)
+{
+ struct cpsw_priv *priv = netdev_priv(ndev);
+ struct cpsw_common *cpsw = priv->cpsw;
+ int ret, i;
+
+ if (vid == cpsw->data.default_vlan)
+ return 0;
+
+ ret = pm_runtime_get_sync(cpsw->dev);
+ if (ret < 0) {
+ pm_runtime_put_noidle(cpsw->dev);
+ return ret;
+ }
+
+ /* In dual EMAC, reserved VLAN id should not be used for
+ * creating VLAN interfaces as this can break the dual
+ * EMAC port separation
+ */
+ for (i = 0; i < cpsw->data.slaves; i++) {
+ if (cpsw->slaves[i].ndev &&
+ vid == cpsw->slaves[i].port_vlan) {
+ ret = -EINVAL;
+ goto err;
+ }
+ }
+
+ dev_dbg(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
+ ret = cpsw_add_vlan_ale_entry(priv, vid);
+err:
+ pm_runtime_put(cpsw->dev);
+ return ret;
+}
+
+static int cpsw_restore_vlans(struct net_device *vdev, int vid, void *arg)
+{
+ struct cpsw_priv *priv = arg;
+
+ if (!vdev || !vid)
+ return 0;
+
+ cpsw_ndo_vlan_rx_add_vid(priv->ndev, 0, vid);
+ return 0;
+}
+
+/* restore resources after port reset */
+static void cpsw_restore(struct cpsw_priv *priv)
+{
+ struct cpsw_common *cpsw = priv->cpsw;
+
+ /* restore vlan configurations */
+ vlan_for_each(priv->ndev, cpsw_restore_vlans, priv);
+
+ /* restore MQPRIO offload */
+ cpsw_mqprio_resume(&cpsw->slaves[priv->emac_port - 1], priv);
+
+ /* restore CBS offload */
+ cpsw_cbs_resume(&cpsw->slaves[priv->emac_port - 1], priv);
+}
+
+static void cpsw_init_host_port_dual_mac(struct cpsw_priv *priv)
+{
+ struct cpsw_common *cpsw = priv->cpsw;
+ int vlan = cpsw->data.default_vlan;
+
+ writel(CPSW_FIFO_DUAL_MAC_MODE, &cpsw->host_port_regs->tx_in_ctl);
+
+ cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_P0_UNI_FLOOD, 0);
+ dev_dbg(cpsw->dev, "unset P0_UNI_FLOOD\n");
+
+ writel(vlan, &cpsw->host_port_regs->port_vlan);
+
+ cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0);
+ /* learning make no sense in dual_mac mode */
+ cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_PORT_NOLEARN, 1);
+}
+
+static void cpsw_init_host_port(struct cpsw_priv *priv)
+{
+ struct cpsw_common *cpsw = priv->cpsw;
+ u32 control_reg;
+
+ /* soft reset the controller and initialize ale */
+ soft_reset("cpsw", &cpsw->regs->soft_reset);
+ cpsw_ale_start(cpsw->ale);
+
+ /* switch to vlan unaware mode */
+ cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_VLAN_AWARE,
+ CPSW_ALE_VLAN_AWARE);
+ control_reg = readl(&cpsw->regs->control);
+ control_reg |= CPSW_VLAN_AWARE | CPSW_RX_VLAN_ENCAP;
+ writel(control_reg, &cpsw->regs->control);
+
+ /* setup host port priority mapping */
+ writel_relaxed(CPDMA_TX_PRIORITY_MAP,
+ &cpsw->host_port_regs->cpdma_tx_pri_map);
+ writel_relaxed(0, &cpsw->host_port_regs->cpdma_rx_chan_map);
+
+ /* disable priority elevation */
+ writel_relaxed(0, &cpsw->regs->ptype);
+
+ /* enable statistics collection only on all ports */
+ writel_relaxed(0x7, &cpsw->regs->stat_port_en);
+
+ /* Enable internal fifo flow control */
+ writel(0x7, &cpsw->regs->flow_control);
+
+ cpsw_init_host_port_dual_mac(priv);
+
+ cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
+ ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
+}
+
+static void cpsw_port_add_dual_emac_def_ale_entries(struct cpsw_priv *priv,
+ struct cpsw_slave *slave)
+{
+ u32 port_mask = 1 << priv->emac_port | ALE_PORT_HOST;
+ struct cpsw_common *cpsw = priv->cpsw;
+ u32 reg;
+
+ reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
+ CPSW2_PORT_VLAN;
+ slave_write(slave, slave->port_vlan, reg);
+
+ cpsw_ale_add_vlan(cpsw->ale, slave->port_vlan, port_mask,
+ port_mask, port_mask, 0);
+ cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
+ ALE_PORT_HOST, ALE_VLAN, slave->port_vlan,
+ ALE_MCAST_FWD);
+ cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
+ HOST_PORT_NUM, ALE_VLAN |
+ ALE_SECURE, slave->port_vlan);
+ cpsw_ale_control_set(cpsw->ale, priv->emac_port,
+ ALE_PORT_DROP_UNKNOWN_VLAN, 1);
+ /* learning make no sense in dual_mac mode */
+ cpsw_ale_control_set(cpsw->ale, priv->emac_port,
+ ALE_PORT_NOLEARN, 1);
+}
+
+static void cpsw_adjust_link(struct net_device *ndev)
+{
+ struct cpsw_priv *priv = netdev_priv(ndev);
+ struct cpsw_common *cpsw = priv->cpsw;
+ struct cpsw_slave *slave;
+ struct phy_device *phy;
+ u32 mac_control = 0;
+
+ slave = &cpsw->slaves[priv->emac_port - 1];
+ phy = slave->phy;
+
+ if (!phy)
+ return;
+
+ if (phy->link) {
+ mac_control = CPSW_SL_CTL_GMII_EN;
+
+ if (phy->speed == 1000)
+ mac_control |= CPSW_SL_CTL_GIG;
+ if (phy->duplex)
+ mac_control |= CPSW_SL_CTL_FULLDUPLEX;
+
+ /* set speed_in input in case RMII mode is used in 100Mbps */
+ if (phy->speed == 100)
+ mac_control |= CPSW_SL_CTL_IFCTL_A;
+ /* in band mode only works in 10Mbps RGMII mode */
+ else if ((phy->speed == 10) && phy_interface_is_rgmii(phy))
+ mac_control |= CPSW_SL_CTL_EXT_EN; /* In Band mode */
+
+ if (priv->rx_pause)
+ mac_control |= CPSW_SL_CTL_RX_FLOW_EN;
+
+ if (priv->tx_pause)
+ mac_control |= CPSW_SL_CTL_TX_FLOW_EN;
+
+ if (mac_control != slave->mac_control)
+ cpsw_sl_ctl_set(slave->mac_sl, mac_control);
+
+ /* enable forwarding */
+ cpsw_ale_control_set(cpsw->ale, priv->emac_port,
+ ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
+
+ netif_tx_wake_all_queues(ndev);
+
+ if (priv->shp_cfg_speed &&
+ priv->shp_cfg_speed != slave->phy->speed &&
+ !cpsw_shp_is_off(priv))
+ dev_warn(priv->dev, "Speed was changed, CBS shaper speeds are changed!");
+ } else {
+ netif_tx_stop_all_queues(ndev);
+
+ mac_control = 0;
+ /* disable forwarding */
+ cpsw_ale_control_set(cpsw->ale, priv->emac_port,
+ ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
+
+ cpsw_sl_wait_for_idle(slave->mac_sl, 100);
+
+ cpsw_sl_ctl_reset(slave->mac_sl);
+ }
+
+ if (mac_control != slave->mac_control)
+ phy_print_status(phy);
+
+ slave->mac_control = mac_control;
+
+ if (phy->link && cpsw_need_resplit(cpsw))
+ cpsw_split_res(cpsw);
+}
+
+static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
+{
+ struct cpsw_common *cpsw = priv->cpsw;
+ struct phy_device *phy;
+
+ cpsw_sl_reset(slave->mac_sl, 100);
+ cpsw_sl_ctl_reset(slave->mac_sl);
+
+ /* setup priority mapping */
+ cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_PRI_MAP,
+ RX_PRIORITY_MAPPING);
+
+ switch (cpsw->version) {
+ case CPSW_VERSION_1:
+ slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
+ /* Increase RX FIFO size to 5 for supporting fullduplex
+ * flow control mode
+ */
+ slave_write(slave,
+ (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
+ CPSW_MAX_BLKS_RX, CPSW1_MAX_BLKS);
+ break;
+ case CPSW_VERSION_2:
+ case CPSW_VERSION_3:
+ case CPSW_VERSION_4:
+ slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
+ /* Increase RX FIFO size to 5 for supporting fullduplex
+ * flow control mode
+ */
+ slave_write(slave,
+ (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
+ CPSW_MAX_BLKS_RX, CPSW2_MAX_BLKS);
+ break;
+ }
+
+ /* setup max packet size, and mac address */
+ cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_MAXLEN,
+ cpsw->rx_packet_max);
+ cpsw_set_slave_mac(slave, priv);
+
+ slave->mac_control = 0; /* no link yet */
+
+ cpsw_port_add_dual_emac_def_ale_entries(priv, slave);
+
+ if (!slave->data->phy_node)
+ dev_err(priv->dev, "no phy found on slave %d\n",
+ slave->slave_num);
+ phy = of_phy_connect(priv->ndev, slave->data->phy_node,
+ &cpsw_adjust_link, 0, slave->data->phy_if);
+ if (!phy) {
+ dev_err(priv->dev, "phy \"%pOF\" not found on slave %d\n",
+ slave->data->phy_node,
+ slave->slave_num);
+ return;
+ }
+ slave->phy = phy;
+
+ phy_attached_info(slave->phy);
+
+ phy_start(slave->phy);
+
+ /* Configure GMII_SEL register */
+ phy_set_mode_ext(slave->data->ifphy, PHY_MODE_ETHERNET,
+ slave->data->phy_if);
+}
+
+static int cpsw_ndo_stop(struct net_device *ndev)
+{
+ struct cpsw_priv *priv = netdev_priv(ndev);
+ struct cpsw_common *cpsw = priv->cpsw;
+ struct cpsw_slave *slave;
+
+ cpsw_info(priv, ifdown, "shutting down ndev\n");
+ slave = &cpsw->slaves[priv->emac_port - 1];
+ if (slave->phy)
+ phy_stop(slave->phy);
+
+ netif_tx_stop_all_queues(priv->ndev);
+
+ if (slave->phy) {
+ phy_disconnect(slave->phy);
+ slave->phy = NULL;
+ }
+
+ __hw_addr_ref_unsync_dev(&ndev->mc, ndev, cpsw_purge_all_mc);
+
+ if (cpsw->usage_count <= 1) {
+ napi_disable(&cpsw->napi_rx);
+ napi_disable(&cpsw->napi_tx);
+ cpts_unregister(cpsw->cpts);
+ cpsw_intr_disable(cpsw);
+ cpdma_ctlr_stop(cpsw->dma);
+ cpsw_ale_stop(cpsw->ale);
+ cpsw_destroy_xdp_rxqs(cpsw);
+ }
+
+ if (cpsw_need_resplit(cpsw))
+ cpsw_split_res(cpsw);
+
+ cpsw->usage_count--;
+ pm_runtime_put_sync(cpsw->dev);
+ return 0;
+}
+
+static int cpsw_ndo_open(struct net_device *ndev)
+{
+ struct cpsw_priv *priv = netdev_priv(ndev);
+ struct cpsw_common *cpsw = priv->cpsw;
+ int ret;
+
+ cpsw_info(priv, ifdown, "starting ndev\n");
+ ret = pm_runtime_get_sync(cpsw->dev);
+ if (ret < 0) {
+ pm_runtime_put_noidle(cpsw->dev);
+ return ret;
+ }
+
+ /* Notify the stack of the actual queue counts. */
+ ret = netif_set_real_num_tx_queues(ndev, cpsw->tx_ch_num);
+ if (ret) {
+ dev_err(priv->dev, "cannot set real number of tx queues\n");
+ goto pm_cleanup;
+ }
+
+ ret = netif_set_real_num_rx_queues(ndev, cpsw->rx_ch_num);
+ if (ret) {
+ dev_err(priv->dev, "cannot set real number of rx queues\n");
+ goto pm_cleanup;
+ }
+
+ /* Initialize host and slave ports */
+ if (!cpsw->usage_count)
+ cpsw_init_host_port(priv);
+ cpsw_slave_open(&cpsw->slaves[priv->emac_port - 1], priv);
+
+ /* initialize shared resources for every ndev */
+ if (!cpsw->usage_count) {
+ /* create rxqs for both infs in dual mac as they use same pool
+ * and must be destroyed together when no users.
+ */
+ ret = cpsw_create_xdp_rxqs(cpsw);
+ if (ret < 0)
+ goto err_cleanup;
+
+ ret = cpsw_fill_rx_channels(priv);
+ if (ret < 0)
+ goto err_cleanup;
+
+ if (cpts_register(cpsw->cpts))
+ dev_err(priv->dev, "error registering cpts device\n");
+
+ napi_enable(&cpsw->napi_rx);
+ napi_enable(&cpsw->napi_tx);
+
+ if (cpsw->tx_irq_disabled) {
+ cpsw->tx_irq_disabled = false;
+ enable_irq(cpsw->irqs_table[1]);
+ }
+
+ if (cpsw->rx_irq_disabled) {
+ cpsw->rx_irq_disabled = false;
+ enable_irq(cpsw->irqs_table[0]);
+ }
+ }
+
+ cpsw_restore(priv);
+
+ /* Enable Interrupt pacing if configured */
+ if (cpsw->coal_intvl != 0) {
+ struct ethtool_coalesce coal;
+
+ coal.rx_coalesce_usecs = cpsw->coal_intvl;
+ cpsw_set_coalesce(ndev, &coal);
+ }
+
+ cpdma_ctlr_start(cpsw->dma);
+ cpsw_intr_enable(cpsw);
+ cpsw->usage_count++;
+
+ return 0;
+
+err_cleanup:
+ cpsw_ndo_stop(ndev);
+
+pm_cleanup:
+ pm_runtime_put_sync(cpsw->dev);
+ return ret;
+}
+
+static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
+ struct net_device *ndev)
+{
+ struct cpsw_priv *priv = netdev_priv(ndev);
+ struct cpsw_common *cpsw = priv->cpsw;
+ struct cpts *cpts = cpsw->cpts;
+ struct netdev_queue *txq;
+ struct cpdma_chan *txch;
+ int ret, q_idx;
+
+ if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
+ cpsw_err(priv, tx_err, "packet pad failed\n");
+ ndev->stats.tx_dropped++;
+ return NET_XMIT_DROP;
+ }
+
+ if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
+ priv->tx_ts_enabled && cpts_can_timestamp(cpts, skb))
+ skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
+
+ q_idx = skb_get_queue_mapping(skb);
+ if (q_idx >= cpsw->tx_ch_num)
+ q_idx = q_idx % cpsw->tx_ch_num;
+
+ txch = cpsw->txv[q_idx].ch;
+ txq = netdev_get_tx_queue(ndev, q_idx);
+ skb_tx_timestamp(skb);
+ ret = cpdma_chan_submit(txch, skb, skb->data, skb->len,
+ priv->emac_port);
+ if (unlikely(ret != 0)) {
+ cpsw_err(priv, tx_err, "desc submit failed\n");
+ goto fail;
+ }
+
+ /* If there is no more tx desc left free then we need to
+ * tell the kernel to stop sending us tx frames.
+ */
+ if (unlikely(!cpdma_check_free_tx_desc(txch))) {
+ netif_tx_stop_queue(txq);
+
+ /* Barrier, so that stop_queue visible to other cpus */
+ smp_mb__after_atomic();
+
+ if (cpdma_check_free_tx_desc(txch))
+ netif_tx_wake_queue(txq);
+ }
+
+ return NETDEV_TX_OK;
+fail:
+ ndev->stats.tx_dropped++;
+ netif_tx_stop_queue(txq);
+
+ /* Barrier, so that stop_queue visible to other cpus */
+ smp_mb__after_atomic();
+
+ if (cpdma_check_free_tx_desc(txch))
+ netif_tx_wake_queue(txq);
+
+ return NETDEV_TX_BUSY;
+}
+
+static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
+{
+ struct sockaddr *addr = (struct sockaddr *)p;
+ struct cpsw_priv *priv = netdev_priv(ndev);
+ struct cpsw_common *cpsw = priv->cpsw;
+ int ret, slave_no;
+ int flags = 0;
+ u16 vid = 0;
+
+ slave_no = cpsw_slave_index(cpsw, priv);
+ if (!is_valid_ether_addr(addr->sa_data))
+ return -EADDRNOTAVAIL;
+
+ ret = pm_runtime_get_sync(cpsw->dev);
+ if (ret < 0) {
+ pm_runtime_put_noidle(cpsw->dev);
+ return ret;
+ }
+
+ vid = cpsw->slaves[slave_no].port_vlan;
+ flags = ALE_VLAN | ALE_SECURE;
+
+ cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
+ flags, vid);
+ cpsw_ale_add_ucast(cpsw->ale, addr->sa_data, HOST_PORT_NUM,
+ flags, vid);
+
+ ether_addr_copy(priv->mac_addr, addr->sa_data);
+ ether_addr_copy(ndev->dev_addr, priv->mac_addr);
+ cpsw_set_slave_mac(&cpsw->slaves[slave_no], priv);
+
+ pm_runtime_put(cpsw->dev);
+
+ return 0;
+}
+
+static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
+ __be16 proto, u16 vid)
+{
+ struct cpsw_priv *priv = netdev_priv(ndev);
+ struct cpsw_common *cpsw = priv->cpsw;
+ int ret;
+ int i;
+
+ if (vid == cpsw->data.default_vlan)
+ return 0;
+
+ ret = pm_runtime_get_sync(cpsw->dev);
+ if (ret < 0) {
+ pm_runtime_put_noidle(cpsw->dev);
+ return ret;
+ }
+
+ for (i = 0; i < cpsw->data.slaves; i++) {
+ if (cpsw->slaves[i].ndev &&
+ vid == cpsw->slaves[i].port_vlan)
+ goto err;
+ }
+
+ dev_dbg(priv->dev, "removing vlanid %d from vlan filter\n", vid);
+ cpsw_ale_del_vlan(cpsw->ale, vid, 0);
+ cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
+ HOST_PORT_NUM, ALE_VLAN, vid);
+ cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
+ 0, ALE_VLAN, vid);
+ cpsw_ale_flush_multicast(cpsw->ale, 0, vid);
+err:
+ pm_runtime_put(cpsw->dev);
+ return ret;
+}
+
+static int cpsw_ndo_get_phys_port_name(struct net_device *ndev, char *name,
+ size_t len)
+{
+ struct cpsw_priv *priv = netdev_priv(ndev);
+ int err;
+
+ err = snprintf(name, len, "p%d", priv->emac_port);
+
+ if (err >= len)
+ return -EINVAL;
+
+ return 0;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void cpsw_ndo_poll_controller(struct net_device *ndev)
+{
+ struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
+
+ cpsw_intr_disable(cpsw);
+ cpsw_rx_interrupt(cpsw->irqs_table[0], cpsw);
+ cpsw_tx_interrupt(cpsw->irqs_table[1], cpsw);
+ cpsw_intr_enable(cpsw);
+}
+#endif
+
+static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n,
+ struct xdp_frame **frames, u32 flags)
+{
+ struct cpsw_priv *priv = netdev_priv(ndev);
+ struct xdp_frame *xdpf;
+ int i, drops = 0;
+
+ if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
+ return -EINVAL;
+
+ for (i = 0; i < n; i++) {
+ xdpf = frames[i];
+ if (xdpf->len < CPSW_MIN_PACKET_SIZE) {
+ xdp_return_frame_rx_napi(xdpf);
+ drops++;
+ continue;
+ }
+
+ if (cpsw_xdp_tx_frame(priv, xdpf, NULL, priv->emac_port))
+ drops++;
+ }
+
+ return n - drops;
+}
+
+static const struct net_device_ops cpsw_netdev_ops = {
+ .ndo_open = cpsw_ndo_open,
+ .ndo_stop = cpsw_ndo_stop,
+ .ndo_start_xmit = cpsw_ndo_start_xmit,
+ .ndo_set_mac_address = cpsw_ndo_set_mac_address,
+ .ndo_do_ioctl = cpsw_ndo_ioctl,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_tx_timeout = cpsw_ndo_tx_timeout,
+ .ndo_set_rx_mode = cpsw_ndo_set_rx_mode,
+ .ndo_set_tx_maxrate = cpsw_ndo_set_tx_maxrate,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = cpsw_ndo_poll_controller,
+#endif
+ .ndo_vlan_rx_add_vid = cpsw_ndo_vlan_rx_add_vid,
+ .ndo_vlan_rx_kill_vid = cpsw_ndo_vlan_rx_kill_vid,
+ .ndo_setup_tc = cpsw_ndo_setup_tc,
+ .ndo_get_phys_port_name = cpsw_ndo_get_phys_port_name,
+ .ndo_bpf = cpsw_ndo_bpf,
+ .ndo_xdp_xmit = cpsw_ndo_xdp_xmit,
+};
+
+static void cpsw_get_drvinfo(struct net_device *ndev,
+ struct ethtool_drvinfo *info)
+{
+ struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
+ struct platform_device *pdev;
+
+ pdev = to_platform_device(cpsw->dev);
+ strlcpy(info->driver, "cpsw-switch", sizeof(info->driver));
+ strlcpy(info->version, "2.0", sizeof(info->version));
+ strlcpy(info->bus_info, pdev->name, sizeof(info->bus_info));
+}
+
+static int cpsw_set_pauseparam(struct net_device *ndev,
+ struct ethtool_pauseparam *pause)
+{
+ struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
+ struct cpsw_priv *priv = netdev_priv(ndev);
+ int slave_no;
+
+ slave_no = cpsw_slave_index(cpsw, priv);
+ if (!cpsw->slaves[slave_no].phy)
+ return -EINVAL;
+
+ if (!phy_validate_pause(cpsw->slaves[slave_no].phy, pause))
+ return -EINVAL;
+
+ priv->rx_pause = pause->rx_pause ? true : false;
+ priv->tx_pause = pause->tx_pause ? true : false;
+
+ phy_set_asym_pause(cpsw->slaves[slave_no].phy,
+ priv->rx_pause, priv->tx_pause);
+
+ return 0;
+}
+
+static int cpsw_set_channels(struct net_device *ndev,
+ struct ethtool_channels *chs)
+{
+ return cpsw_set_channels_common(ndev, chs, cpsw_rx_handler);
+}
+
+static const struct ethtool_ops cpsw_ethtool_ops = {
+ .get_drvinfo = cpsw_get_drvinfo,
+ .get_msglevel = cpsw_get_msglevel,
+ .set_msglevel = cpsw_set_msglevel,
+ .get_link = ethtool_op_get_link,
+ .get_ts_info = cpsw_get_ts_info,
+ .get_coalesce = cpsw_get_coalesce,
+ .set_coalesce = cpsw_set_coalesce,
+ .get_sset_count = cpsw_get_sset_count,
+ .get_strings = cpsw_get_strings,
+ .get_ethtool_stats = cpsw_get_ethtool_stats,
+ .get_pauseparam = cpsw_get_pauseparam,
+ .set_pauseparam = cpsw_set_pauseparam,
+ .get_wol = cpsw_get_wol,
+ .set_wol = cpsw_set_wol,
+ .get_regs_len = cpsw_get_regs_len,
+ .get_regs = cpsw_get_regs,
+ .begin = cpsw_ethtool_op_begin,
+ .complete = cpsw_ethtool_op_complete,
+ .get_channels = cpsw_get_channels,
+ .set_channels = cpsw_set_channels,
+ .get_link_ksettings = cpsw_get_link_ksettings,
+ .set_link_ksettings = cpsw_set_link_ksettings,
+ .get_eee = cpsw_get_eee,
+ .set_eee = cpsw_set_eee,
+ .nway_reset = cpsw_nway_reset,
+ .get_ringparam = cpsw_get_ringparam,
+ .set_ringparam = cpsw_set_ringparam,
+};
+
+static int cpsw_probe_dt(struct cpsw_common *cpsw)
+{
+ struct device_node *node = cpsw->dev->of_node, *tmp_node, *port_np;
+ struct cpsw_platform_data *data = &cpsw->data;
+ struct device *dev = cpsw->dev;
+ int ret;
+ u32 prop;
+
+ if (!node)
+ return -EINVAL;
+
+ tmp_node = of_get_child_by_name(node, "ethernet-ports");
+ if (!tmp_node)
+ return -ENOENT;
+ data->slaves = of_get_child_count(tmp_node);
+ if (data->slaves != CPSW_SLAVE_PORTS_NUM) {
+ of_node_put(tmp_node);
+ return -ENOENT;
+ }
+
+ data->active_slave = 0;
+ data->channels = CPSW_MAX_QUEUES;
+ data->ale_entries = CPSW_ALE_NUM_ENTRIES;
+ data->dual_emac = 1;
+ data->bd_ram_size = CPSW_BD_RAM_SIZE;
+ data->mac_control = 0;
+
+ data->slave_data = devm_kcalloc(dev, CPSW_SLAVE_PORTS_NUM,
+ sizeof(struct cpsw_slave_data),
+ GFP_KERNEL);
+ if (!data->slave_data)
+ return -ENOMEM;
+
+ /* Populate all the child nodes here...
+ */
+ ret = devm_of_platform_populate(dev);
+ /* We do not want to force this, as in some cases may not have child */
+ if (ret)
+ dev_warn(dev, "Doesn't have any child node\n");
+
+ for_each_child_of_node(tmp_node, port_np) {
+ struct cpsw_slave_data *slave_data;
+ const void *mac_addr;
+ u32 port_id;
+
+ ret = of_property_read_u32(port_np, "reg", &port_id);
+ if (ret < 0) {
+ dev_err(dev, "%pOF error reading port_id %d\n",
+ port_np, ret);
+ goto err_node_put;
+ }
+
+ if (!port_id || port_id > CPSW_SLAVE_PORTS_NUM) {
+ dev_err(dev, "%pOF has invalid port_id %u\n",
+ port_np, port_id);
+ ret = -EINVAL;
+ goto err_node_put;
+ }
+
+ slave_data = &data->slave_data[port_id - 1];
+
+ slave_data->disabled = !of_device_is_available(port_np);
+ if (slave_data->disabled)
+ continue;
+
+ slave_data->slave_node = port_np;
+ slave_data->ifphy = devm_of_phy_get(dev, port_np, NULL);
+ if (IS_ERR(slave_data->ifphy)) {
+ ret = PTR_ERR(slave_data->ifphy);
+ dev_err(dev, "%pOF: Error retrieving port phy: %d\n",
+ port_np, ret);
+ goto err_node_put;
+ }
+
+ if (of_phy_is_fixed_link(port_np)) {
+ ret = of_phy_register_fixed_link(port_np);
+ if (ret) {
+ if (ret != -EPROBE_DEFER)
+ dev_err(dev, "%pOF failed to register fixed-link phy: %d\n",
+ port_np, ret);
+ goto err_node_put;
+ }
+ slave_data->phy_node = of_node_get(port_np);
+ } else {
+ slave_data->phy_node =
+ of_parse_phandle(port_np, "phy-handle", 0);
+ }
+
+ if (!slave_data->phy_node) {
+ dev_err(dev, "%pOF no phy found\n", port_np);
+ ret = -ENODEV;
+ goto err_node_put;
+ }
+
+ ret = of_get_phy_mode(port_np, &slave_data->phy_if);
+ if (ret) {
+ dev_err(dev, "%pOF read phy-mode err %d\n",
+ port_np, ret);
+ goto err_node_put;
+ }
+
+ mac_addr = of_get_mac_address(port_np);
+ if (!IS_ERR(mac_addr)) {
+ ether_addr_copy(slave_data->mac_addr, mac_addr);
+ } else {
+ ret = ti_cm_get_macid(dev, port_id - 1,
+ slave_data->mac_addr);
+ if (ret)
+ goto err_node_put;
+ }
+
+ if (of_property_read_u32(port_np, "ti,dual-emac-pvid",
+ &prop)) {
+ dev_err(dev, "%pOF Missing dual_emac_res_vlan in DT.\n",
+ port_np);
+ slave_data->dual_emac_res_vlan = port_id;
+ dev_err(dev, "%pOF Using %d as Reserved VLAN\n",
+ port_np, slave_data->dual_emac_res_vlan);
+ } else {
+ slave_data->dual_emac_res_vlan = prop;
+ }
+ }
+
+ of_node_put(tmp_node);
+ return 0;
+
+err_node_put:
+ of_node_put(port_np);
+ return ret;
+}
+
+static void cpsw_remove_dt(struct cpsw_common *cpsw)
+{
+ struct cpsw_platform_data *data = &cpsw->data;
+ int i = 0;
+
+ for (i = 0; i < cpsw->data.slaves; i++) {
+ struct cpsw_slave_data *slave_data = &data->slave_data[i];
+ struct device_node *port_np = slave_data->phy_node;
+
+ if (port_np) {
+ if (of_phy_is_fixed_link(port_np))
+ of_phy_deregister_fixed_link(port_np);
+
+ of_node_put(port_np);
+ }
+ }
+}
+
+static int cpsw_create_ports(struct cpsw_common *cpsw)
+{
+ struct cpsw_platform_data *data = &cpsw->data;
+ struct net_device *ndev, *napi_ndev = NULL;
+ struct device *dev = cpsw->dev;
+ struct cpsw_priv *priv;
+ int ret = 0, i = 0;
+
+ for (i = 0; i < cpsw->data.slaves; i++) {
+ struct cpsw_slave_data *slave_data = &data->slave_data[i];
+
+ if (slave_data->disabled)
+ continue;
+
+ ndev = devm_alloc_etherdev_mqs(dev, sizeof(struct cpsw_priv),
+ CPSW_MAX_QUEUES,
+ CPSW_MAX_QUEUES);
+ if (!ndev) {
+ dev_err(dev, "error allocating net_device\n");
+ return -ENOMEM;
+ }
+
+ priv = netdev_priv(ndev);
+ priv->cpsw = cpsw;
+ priv->ndev = ndev;
+ priv->dev = dev;
+ priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
+ priv->emac_port = i + 1;
+
+ if (is_valid_ether_addr(slave_data->mac_addr)) {
+ ether_addr_copy(priv->mac_addr, slave_data->mac_addr);
+ dev_info(cpsw->dev, "Detected MACID = %pM\n",
+ priv->mac_addr);
+ } else {
+ eth_random_addr(slave_data->mac_addr);
+ dev_info(cpsw->dev, "Random MACID = %pM\n",
+ priv->mac_addr);
+ }
+ ether_addr_copy(ndev->dev_addr, slave_data->mac_addr);
+ ether_addr_copy(priv->mac_addr, slave_data->mac_addr);
+
+ cpsw->slaves[i].ndev = ndev;
+
+ ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER |
+ NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_NETNS_LOCAL;
+
+ ndev->netdev_ops = &cpsw_netdev_ops;
+ ndev->ethtool_ops = &cpsw_ethtool_ops;
+ SET_NETDEV_DEV(ndev, dev);
+
+ if (!napi_ndev) {
+ /* CPSW Host port CPDMA interface is shared between
+ * ports and there is only one TX and one RX IRQs
+ * available for all possible TX and RX channels
+ * accordingly.
+ */
+ netif_napi_add(ndev, &cpsw->napi_rx,
+ cpsw->quirk_irq ?
+ cpsw_rx_poll : cpsw_rx_mq_poll,
+ CPSW_POLL_WEIGHT);
+ netif_tx_napi_add(ndev, &cpsw->napi_tx,
+ cpsw->quirk_irq ?
+ cpsw_tx_poll : cpsw_tx_mq_poll,
+ CPSW_POLL_WEIGHT);
+ }
+
+ napi_ndev = ndev;
+ }
+
+ return ret;
+}
+
+static void cpsw_unregister_ports(struct cpsw_common *cpsw)
+{
+ int i = 0;
+
+ for (i = 0; i < cpsw->data.slaves; i++) {
+ if (!cpsw->slaves[i].ndev)
+ continue;
+
+ unregister_netdev(cpsw->slaves[i].ndev);
+ }
+}
+
+static int cpsw_register_ports(struct cpsw_common *cpsw)
+{
+ int ret = 0, i = 0;
+
+ for (i = 0; i < cpsw->data.slaves; i++) {
+ if (!cpsw->slaves[i].ndev)
+ continue;
+
+ /* register the network device */
+ ret = register_netdev(cpsw->slaves[i].ndev);
+ if (ret) {
+ dev_err(cpsw->dev,
+ "cpsw: err registering net device%d\n", i);
+ cpsw->slaves[i].ndev = NULL;
+ break;
+ }
+ }
+
+ if (ret)
+ cpsw_unregister_ports(cpsw);
+ return ret;
+}
+
+static const struct devlink_ops cpsw_devlink_ops;
+
+static int cpsw_dl_ale_ctrl_get(struct devlink *dl, u32 id,
+ struct devlink_param_gset_ctx *ctx)
+{
+ struct cpsw_devlink *dl_priv = devlink_priv(dl);
+ struct cpsw_common *cpsw = dl_priv->cpsw;
+
+ dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
+
+ switch (id) {
+ case CPSW_DL_PARAM_ALE_BYPASS:
+ ctx->val.vbool = cpsw_ale_control_get(cpsw->ale, 0, ALE_BYPASS);
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static int cpsw_dl_ale_ctrl_set(struct devlink *dl, u32 id,
+ struct devlink_param_gset_ctx *ctx)
+{
+ struct cpsw_devlink *dl_priv = devlink_priv(dl);
+ struct cpsw_common *cpsw = dl_priv->cpsw;
+ int ret = -EOPNOTSUPP;
+
+ dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
+
+ switch (id) {
+ case CPSW_DL_PARAM_ALE_BYPASS:
+ ret = cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS,
+ ctx->val.vbool);
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static const struct devlink_param cpsw_devlink_params[] = {
+ DEVLINK_PARAM_DRIVER(CPSW_DL_PARAM_ALE_BYPASS,
+ "ale_bypass", DEVLINK_PARAM_TYPE_BOOL,
+ BIT(DEVLINK_PARAM_CMODE_RUNTIME),
+ cpsw_dl_ale_ctrl_get, cpsw_dl_ale_ctrl_set, NULL),
+};
+
+static int cpsw_register_devlink(struct cpsw_common *cpsw)
+{
+ struct device *dev = cpsw->dev;
+ struct cpsw_devlink *dl_priv;
+ int ret = 0;
+
+ cpsw->devlink = devlink_alloc(&cpsw_devlink_ops, sizeof(*dl_priv));
+ if (!cpsw->devlink)
+ return -ENOMEM;
+
+ dl_priv = devlink_priv(cpsw->devlink);
+ dl_priv->cpsw = cpsw;
+
+ ret = devlink_register(cpsw->devlink, dev);
+ if (ret) {
+ dev_err(dev, "DL reg fail ret:%d\n", ret);
+ goto dl_free;
+ }
+
+ ret = devlink_params_register(cpsw->devlink, cpsw_devlink_params,
+ ARRAY_SIZE(cpsw_devlink_params));
+ if (ret) {
+ dev_err(dev, "DL params reg fail ret:%d\n", ret);
+ goto dl_unreg;
+ }
+
+ devlink_params_publish(cpsw->devlink);
+ return ret;
+
+dl_unreg:
+ devlink_unregister(cpsw->devlink);
+dl_free:
+ devlink_free(cpsw->devlink);
+ return ret;
+}
+
+static void cpsw_unregister_devlink(struct cpsw_common *cpsw)
+{
+ devlink_params_unpublish(cpsw->devlink);
+ devlink_params_unregister(cpsw->devlink, cpsw_devlink_params,
+ ARRAY_SIZE(cpsw_devlink_params));
+ devlink_unregister(cpsw->devlink);
+ devlink_free(cpsw->devlink);
+}
+
+static const struct of_device_id cpsw_of_mtable[] = {
+ { .compatible = "ti,cpsw-switch"},
+ { .compatible = "ti,am335x-cpsw-switch"},
+ { .compatible = "ti,am4372-cpsw-switch"},
+ { .compatible = "ti,dra7-cpsw-switch"},
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
+
+static const struct soc_device_attribute cpsw_soc_devices[] = {
+ { .family = "AM33xx", .revision = "ES1.0"},
+ { /* sentinel */ }
+};
+
+static int cpsw_probe(struct platform_device *pdev)
+{
+ const struct soc_device_attribute *soc;
+ struct device *dev = &pdev->dev;
+ struct cpsw_common *cpsw;
+ struct resource *ss_res;
+ struct gpio_descs *mode;
+ void __iomem *ss_regs;
+ int ret = 0, ch;
+ struct clk *clk;
+ int irq;
+
+ cpsw = devm_kzalloc(dev, sizeof(struct cpsw_common), GFP_KERNEL);
+ if (!cpsw)
+ return -ENOMEM;
+
+ cpsw_slave_index = cpsw_slave_index_priv;
+
+ cpsw->dev = dev;
+
+ cpsw->slaves = devm_kcalloc(dev,
+ CPSW_SLAVE_PORTS_NUM,
+ sizeof(struct cpsw_slave),
+ GFP_KERNEL);
+ if (!cpsw->slaves)
+ return -ENOMEM;
+
+ mode = devm_gpiod_get_array_optional(dev, "mode", GPIOD_OUT_LOW);
+ if (IS_ERR(mode)) {
+ ret = PTR_ERR(mode);
+ dev_err(dev, "gpio request failed, ret %d\n", ret);
+ return ret;
+ }
+
+ clk = devm_clk_get(dev, "fck");
+ if (IS_ERR(clk)) {
+ ret = PTR_ERR(clk);
+ dev_err(dev, "fck is not found %d\n", ret);
+ return ret;
+ }
+ cpsw->bus_freq_mhz = clk_get_rate(clk) / 1000000;
+
+ ss_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ ss_regs = devm_ioremap_resource(dev, ss_res);
+ if (IS_ERR(ss_regs)) {
+ ret = PTR_ERR(ss_regs);
+ return ret;
+ }
+ cpsw->regs = ss_regs;
+
+ irq = platform_get_irq_byname(pdev, "rx");
+ if (irq < 0)
+ return irq;
+ cpsw->irqs_table[0] = irq;
+
+ irq = platform_get_irq_byname(pdev, "tx");
+ if (irq < 0)
+ return irq;
+ cpsw->irqs_table[1] = irq;
+
+ platform_set_drvdata(pdev, cpsw);
+ /* This may be required here for child devices. */
+ pm_runtime_enable(dev);
+
+ /* Need to enable clocks with runtime PM api to access module
+ * registers
+ */
+ ret = pm_runtime_get_sync(dev);
+ if (ret < 0) {
+ pm_runtime_put_noidle(dev);
+ pm_runtime_disable(dev);
+ return ret;
+ }
+
+ ret = cpsw_probe_dt(cpsw);
+ if (ret)
+ goto clean_dt_ret;
+
+ soc = soc_device_match(cpsw_soc_devices);
+ if (soc)
+ cpsw->quirk_irq = 1;
+
+ cpsw->rx_packet_max = rx_packet_max;
+ cpsw->descs_pool_size = descs_pool_size;
+
+ ret = cpsw_init_common(cpsw, ss_regs, ale_ageout,
+ (u32 __force)ss_res->start + CPSW2_BD_OFFSET,
+ descs_pool_size);
+ if (ret)
+ goto clean_dt_ret;
+
+ cpsw->wr_regs = cpsw->version == CPSW_VERSION_1 ?
+ ss_regs + CPSW1_WR_OFFSET :
+ ss_regs + CPSW2_WR_OFFSET;
+
+ ch = cpsw->quirk_irq ? 0 : 7;
+ cpsw->txv[0].ch = cpdma_chan_create(cpsw->dma, ch, cpsw_tx_handler, 0);
+ if (IS_ERR(cpsw->txv[0].ch)) {
+ dev_err(dev, "error initializing tx dma channel\n");
+ ret = PTR_ERR(cpsw->txv[0].ch);
+ goto clean_cpts;
+ }
+
+ cpsw->rxv[0].ch = cpdma_chan_create(cpsw->dma, 0, cpsw_rx_handler, 1);
+ if (IS_ERR(cpsw->rxv[0].ch)) {
+ dev_err(dev, "error initializing rx dma channel\n");
+ ret = PTR_ERR(cpsw->rxv[0].ch);
+ goto clean_cpts;
+ }
+ cpsw_split_res(cpsw);
+
+ /* setup netdevs */
+ ret = cpsw_create_ports(cpsw);
+ if (ret)
+ goto clean_unregister_netdev;
+
+ /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
+ * MISC IRQs which are always kept disabled with this driver so
+ * we will not request them.
+ *
+ * If anyone wants to implement support for those, make sure to
+ * first request and append them to irqs_table array.
+ */
+
+ ret = devm_request_irq(dev, cpsw->irqs_table[0], cpsw_rx_interrupt,
+ 0, dev_name(dev), cpsw);
+ if (ret < 0) {
+ dev_err(dev, "error attaching irq (%d)\n", ret);
+ goto clean_unregister_netdev;
+ }
+
+ ret = devm_request_irq(dev, cpsw->irqs_table[1], cpsw_tx_interrupt,
+ 0, dev_name(dev), cpsw);
+ if (ret < 0) {
+ dev_err(dev, "error attaching irq (%d)\n", ret);
+ goto clean_unregister_netdev;
+ }
+
+ ret = cpsw_register_devlink(cpsw);
+ if (ret)
+ goto clean_unregister_notifiers;
+
+ ret = cpsw_register_ports(cpsw);
+ if (ret)
+ goto clean_unregister_notifiers;
+
+ dev_notice(dev, "initialized (regs %pa, pool size %d) hw_ver:%08X %d.%d (%d)\n",
+ &ss_res->start, descs_pool_size,
+ cpsw->version, CPSW_MAJOR_VERSION(cpsw->version),
+ CPSW_MINOR_VERSION(cpsw->version),
+ CPSW_RTL_VERSION(cpsw->version));
+
+ pm_runtime_put(dev);
+
+ return 0;
+
+clean_unregister_notifiers:
+ cpsw_unregister_notifiers(cpsw);
+clean_unregister_netdev:
+ cpsw_unregister_ports(cpsw);
+clean_cpts:
+ cpts_release(cpsw->cpts);
+ cpdma_ctlr_destroy(cpsw->dma);
+clean_dt_ret:
+ cpsw_remove_dt(cpsw);
+ pm_runtime_put_sync(dev);
+ pm_runtime_disable(dev);
+ return ret;
+}
+
+static int cpsw_remove(struct platform_device *pdev)
+{
+ struct cpsw_common *cpsw = platform_get_drvdata(pdev);
+ int ret;
+
+ ret = pm_runtime_get_sync(&pdev->dev);
+ if (ret < 0) {
+ pm_runtime_put_noidle(&pdev->dev);
+ return ret;
+ }
+
+ cpsw_unregister_devlink(cpsw);
+ cpsw_unregister_ports(cpsw);
+
+ cpts_release(cpsw->cpts);
+ cpdma_ctlr_destroy(cpsw->dma);
+ cpsw_remove_dt(cpsw);
+ pm_runtime_put_sync(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
+ return 0;
+}
+
+static struct platform_driver cpsw_driver = {
+ .driver = {
+ .name = "cpsw-switch",
+ .of_match_table = cpsw_of_mtable,
+ },
+ .probe = cpsw_probe,
+ .remove = cpsw_remove,
+};
+
+module_platform_driver(cpsw_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("TI CPSW switchdev Ethernet driver");
projects / linux.git / commitdiff