diff --git a/drivers/net/ethernet/ti/Kconfig b/drivers/net/ethernet/ti/Kconfig index 137632b09c72..9170572346b5 100644 --- a/drivers/net/ethernet/ti/Kconfig +++ b/drivers/net/ethernet/ti/Kconfig @@ -59,9 +59,24 @@ config TI_CPSW To compile this driver as a module, choose M here: the module will be called cpsw. +config TI_CPSW_SWITCHDEV + tristate "TI CPSW Switch Support with switchdev" + depends on ARCH_DAVINCI || ARCH_OMAP2PLUS || COMPILE_TEST + select NET_SWITCHDEV + select TI_DAVINCI_MDIO + select MFD_SYSCON + select REGMAP + select NET_DEVLINK + imply PHY_TI_GMII_SEL + help + This driver supports TI's CPSW Ethernet Switch. + + To compile this driver as a module, choose M here: the module + will be called cpsw_new. + config TI_CPTS bool "TI Common Platform Time Sync (CPTS) Support" - depends on TI_CPSW || TI_KEYSTONE_NETCP || COMPILE_TEST + depends on TI_CPSW || TI_KEYSTONE_NETCP || TI_CPSW_SWITCHDEV || COMPILE_TEST depends on COMMON_CLK depends on POSIX_TIMERS ---help--- @@ -73,7 +88,7 @@ config TI_CPTS config TI_CPTS_MOD tristate depends on TI_CPTS - default y if TI_CPSW=y || TI_KEYSTONE_NETCP=y + default y if TI_CPSW=y || TI_KEYSTONE_NETCP=y || TI_CPSW_SWITCHDEV=y select NET_PTP_CLASSIFY imply PTP_1588_CLOCK default m diff --git a/drivers/net/ethernet/ti/Makefile b/drivers/net/ethernet/ti/Makefile index ed12e1e5df2f..c59670956ed3 100644 --- a/drivers/net/ethernet/ti/Makefile +++ b/drivers/net/ethernet/ti/Makefile @@ -15,6 +15,8 @@ obj-$(CONFIG_TI_CPSW_PHY_SEL) += cpsw-phy-sel.o obj-$(CONFIG_TI_CPTS_MOD) += cpts.o obj-$(CONFIG_TI_CPSW) += ti_cpsw.o ti_cpsw-y := cpsw.o davinci_cpdma.o cpsw_ale.o cpsw_priv.o cpsw_sl.o cpsw_ethtool.o +obj-$(CONFIG_TI_CPSW_SWITCHDEV) += ti_cpsw_new.o +ti_cpsw_new-y := cpsw_new.o davinci_cpdma.o cpsw_ale.o cpsw_sl.o cpsw_priv.o cpsw_ethtool.o obj-$(CONFIG_TI_KEYSTONE_NETCP) += keystone_netcp.o keystone_netcp-y := netcp_core.o cpsw_ale.o diff --git a/drivers/net/ethernet/ti/cpsw_new.c b/drivers/net/ethernet/ti/cpsw_new.c new file mode 100644 index 000000000000..25e59d328342 --- /dev/null +++ b/drivers/net/ethernet/ti/cpsw_new.c @@ -0,0 +1,1673 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Texas Instruments Ethernet Switch Driver + * + * Copyright (C) 2019 Texas Instruments + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include "cpsw.h" +#include "cpsw_ale.h" +#include "cpsw_priv.h" +#include "cpsw_sl.h" +#include "cpts.h" +#include "davinci_cpdma.h" + +#include + +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"); diff --git a/drivers/net/ethernet/ti/cpsw_priv.c b/drivers/net/ethernet/ti/cpsw_priv.c index bbc9b413b5c3..b833cc1d188c 100644 --- a/drivers/net/ethernet/ti/cpsw_priv.c +++ b/drivers/net/ethernet/ti/cpsw_priv.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include @@ -422,6 +423,7 @@ int cpsw_init_common(struct cpsw_common *cpsw, void __iomem *ss_regs, struct cpsw_platform_data *data; struct cpdma_params dma_params; struct device *dev = cpsw->dev; + struct device_node *cpts_node; void __iomem *cpts_regs; int ret = 0, i; @@ -516,11 +518,16 @@ int cpsw_init_common(struct cpsw_common *cpsw, void __iomem *ss_regs, return -ENOMEM; } - cpsw->cpts = cpts_create(cpsw->dev, cpts_regs, cpsw->dev->of_node); + cpts_node = of_get_child_by_name(cpsw->dev->of_node, "cpts"); + if (!cpts_node) + cpts_node = cpsw->dev->of_node; + + cpsw->cpts = cpts_create(cpsw->dev, cpts_regs, cpts_node); if (IS_ERR(cpsw->cpts)) { ret = PTR_ERR(cpsw->cpts); cpdma_ctlr_destroy(cpsw->dma); } + of_node_put(cpts_node); return ret; } diff --git a/drivers/net/ethernet/ti/cpsw_priv.h b/drivers/net/ethernet/ti/cpsw_priv.h index 0dd70e191cf1..ac84a43cba09 100644 --- a/drivers/net/ethernet/ti/cpsw_priv.h +++ b/drivers/net/ethernet/ti/cpsw_priv.h @@ -54,6 +54,7 @@ do { \ #define HOST_PORT_NUM 0 #define CPSW_ALE_PORTS_NUM 3 +#define CPSW_SLAVE_PORTS_NUM 2 #define SLIVER_SIZE 0x40 #define CPSW1_HOST_PORT_OFFSET 0x028 @@ -65,6 +66,7 @@ do { \ #define CPSW1_CPTS_OFFSET 0x500 #define CPSW1_ALE_OFFSET 0x600 #define CPSW1_SLIVER_OFFSET 0x700 +#define CPSW1_WR_OFFSET 0x900 #define CPSW2_HOST_PORT_OFFSET 0x108 #define CPSW2_SLAVE_OFFSET 0x200 @@ -76,6 +78,7 @@ do { \ #define CPSW2_ALE_OFFSET 0xd00 #define CPSW2_SLIVER_OFFSET 0xd80 #define CPSW2_BD_OFFSET 0x2000 +#define CPSW2_WR_OFFSET 0x1200 #define CPDMA_RXTHRESH 0x0c0 #define CPDMA_RXFREE 0x0e0 @@ -113,12 +116,15 @@ do { \ #define IRQ_NUM 2 #define CPSW_MAX_QUEUES 8 #define CPSW_CPDMA_DESCS_POOL_SIZE_DEFAULT 256 +#define CPSW_ALE_AGEOUT_DEFAULT 10 /* sec */ +#define CPSW_ALE_NUM_ENTRIES 1024 #define CPSW_FIFO_QUEUE_TYPE_SHIFT 16 #define CPSW_FIFO_SHAPE_EN_SHIFT 16 #define CPSW_FIFO_RATE_EN_SHIFT 20 #define CPSW_TC_NUM 4 #define CPSW_FIFO_SHAPERS_NUM (CPSW_TC_NUM - 1) #define CPSW_PCT_MASK 0x7f +#define CPSW_BD_RAM_SIZE 0x2000 #define CPSW_RX_VLAN_ENCAP_HDR_PRIO_SHIFT 29 #define CPSW_RX_VLAN_ENCAP_HDR_PRIO_MSK GENMASK(2, 0) @@ -279,6 +285,7 @@ struct cpsw_slave_data { u8 mac_addr[ETH_ALEN]; u16 dual_emac_res_vlan; /* Reserved VLAN for DualEMAC */ struct phy *ifphy; + bool disabled; }; struct cpsw_platform_data { @@ -286,9 +293,9 @@ struct cpsw_platform_data { u32 ss_reg_ofs; /* Subsystem control register offset */ u32 channels; /* number of cpdma channels (symmetric) */ u32 slaves; /* number of slave cpgmac ports */ - u32 active_slave; /* time stamping, ethtool and SIOCGMIIPHY slave */ + u32 active_slave;/* time stamping, ethtool and SIOCGMIIPHY slave */ u32 ale_entries; /* ale table size */ - u32 bd_ram_size; /*buffer descriptor ram size */ + u32 bd_ram_size; /*buffer descriptor ram size */ u32 mac_control; /* Mac control register */ u16 default_vlan; /* Def VLAN for ALE lookup in VLAN aware mode*/ bool dual_emac; /* Enable Dual EMAC mode */ @@ -344,6 +351,7 @@ struct cpsw_common { bool tx_irq_disabled; u32 irqs_table[IRQ_NUM]; struct cpts *cpts; + struct devlink *devlink; int rx_ch_num, tx_ch_num; int speed; int usage_count;