| // SPDX-License-Identifier: GPL-2.0 |
| /* Copyright (c) 2018, Sensor-Technik Wiedemann GmbH |
| * Copyright (c) 2018-2019, Vladimir Oltean <olteanv@gmail.com> |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <linux/delay.h> |
| #include <linux/module.h> |
| #include <linux/printk.h> |
| #include <linux/spi/spi.h> |
| #include <linux/errno.h> |
| #include <linux/gpio/consumer.h> |
| #include <linux/phylink.h> |
| #include <linux/of.h> |
| #include <linux/of_net.h> |
| #include <linux/of_mdio.h> |
| #include <linux/of_device.h> |
| #include <linux/netdev_features.h> |
| #include <linux/netdevice.h> |
| #include <linux/if_bridge.h> |
| #include <linux/if_ether.h> |
| #include <linux/dsa/8021q.h> |
| #include "sja1105.h" |
| #include "sja1105_tas.h" |
| |
| static void sja1105_hw_reset(struct gpio_desc *gpio, unsigned int pulse_len, |
| unsigned int startup_delay) |
| { |
| gpiod_set_value_cansleep(gpio, 1); |
| /* Wait for minimum reset pulse length */ |
| msleep(pulse_len); |
| gpiod_set_value_cansleep(gpio, 0); |
| /* Wait until chip is ready after reset */ |
| msleep(startup_delay); |
| } |
| |
| static void |
| sja1105_port_allow_traffic(struct sja1105_l2_forwarding_entry *l2_fwd, |
| int from, int to, bool allow) |
| { |
| if (allow) { |
| l2_fwd[from].bc_domain |= BIT(to); |
| l2_fwd[from].reach_port |= BIT(to); |
| l2_fwd[from].fl_domain |= BIT(to); |
| } else { |
| l2_fwd[from].bc_domain &= ~BIT(to); |
| l2_fwd[from].reach_port &= ~BIT(to); |
| l2_fwd[from].fl_domain &= ~BIT(to); |
| } |
| } |
| |
| /* Structure used to temporarily transport device tree |
| * settings into sja1105_setup |
| */ |
| struct sja1105_dt_port { |
| phy_interface_t phy_mode; |
| sja1105_mii_role_t role; |
| }; |
| |
| static int sja1105_init_mac_settings(struct sja1105_private *priv) |
| { |
| struct sja1105_mac_config_entry default_mac = { |
| /* Enable all 8 priority queues on egress. |
| * Every queue i holds top[i] - base[i] frames. |
| * Sum of top[i] - base[i] is 511 (max hardware limit). |
| */ |
| .top = {0x3F, 0x7F, 0xBF, 0xFF, 0x13F, 0x17F, 0x1BF, 0x1FF}, |
| .base = {0x0, 0x40, 0x80, 0xC0, 0x100, 0x140, 0x180, 0x1C0}, |
| .enabled = {true, true, true, true, true, true, true, true}, |
| /* Keep standard IFG of 12 bytes on egress. */ |
| .ifg = 0, |
| /* Always put the MAC speed in automatic mode, where it can be |
| * adjusted at runtime by PHYLINK. |
| */ |
| .speed = SJA1105_SPEED_AUTO, |
| /* No static correction for 1-step 1588 events */ |
| .tp_delin = 0, |
| .tp_delout = 0, |
| /* Disable aging for critical TTEthernet traffic */ |
| .maxage = 0xFF, |
| /* Internal VLAN (pvid) to apply to untagged ingress */ |
| .vlanprio = 0, |
| .vlanid = 1, |
| .ing_mirr = false, |
| .egr_mirr = false, |
| /* Don't drop traffic with other EtherType than ETH_P_IP */ |
| .drpnona664 = false, |
| /* Don't drop double-tagged traffic */ |
| .drpdtag = false, |
| /* Don't drop untagged traffic */ |
| .drpuntag = false, |
| /* Don't retag 802.1p (VID 0) traffic with the pvid */ |
| .retag = false, |
| /* Disable learning and I/O on user ports by default - |
| * STP will enable it. |
| */ |
| .dyn_learn = false, |
| .egress = false, |
| .ingress = false, |
| }; |
| struct sja1105_mac_config_entry *mac; |
| struct sja1105_table *table; |
| int i; |
| |
| table = &priv->static_config.tables[BLK_IDX_MAC_CONFIG]; |
| |
| /* Discard previous MAC Configuration Table */ |
| if (table->entry_count) { |
| kfree(table->entries); |
| table->entry_count = 0; |
| } |
| |
| table->entries = kcalloc(SJA1105_NUM_PORTS, |
| table->ops->unpacked_entry_size, GFP_KERNEL); |
| if (!table->entries) |
| return -ENOMEM; |
| |
| table->entry_count = SJA1105_NUM_PORTS; |
| |
| mac = table->entries; |
| |
| for (i = 0; i < SJA1105_NUM_PORTS; i++) { |
| mac[i] = default_mac; |
| if (i == dsa_upstream_port(priv->ds, i)) { |
| /* STP doesn't get called for CPU port, so we need to |
| * set the I/O parameters statically. |
| */ |
| mac[i].dyn_learn = true; |
| mac[i].ingress = true; |
| mac[i].egress = true; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int sja1105_init_mii_settings(struct sja1105_private *priv, |
| struct sja1105_dt_port *ports) |
| { |
| struct device *dev = &priv->spidev->dev; |
| struct sja1105_xmii_params_entry *mii; |
| struct sja1105_table *table; |
| int i; |
| |
| table = &priv->static_config.tables[BLK_IDX_XMII_PARAMS]; |
| |
| /* Discard previous xMII Mode Parameters Table */ |
| if (table->entry_count) { |
| kfree(table->entries); |
| table->entry_count = 0; |
| } |
| |
| table->entries = kcalloc(SJA1105_MAX_XMII_PARAMS_COUNT, |
| table->ops->unpacked_entry_size, GFP_KERNEL); |
| if (!table->entries) |
| return -ENOMEM; |
| |
| /* Override table based on PHYLINK DT bindings */ |
| table->entry_count = SJA1105_MAX_XMII_PARAMS_COUNT; |
| |
| mii = table->entries; |
| |
| for (i = 0; i < SJA1105_NUM_PORTS; i++) { |
| switch (ports[i].phy_mode) { |
| case PHY_INTERFACE_MODE_MII: |
| mii->xmii_mode[i] = XMII_MODE_MII; |
| break; |
| case PHY_INTERFACE_MODE_RMII: |
| mii->xmii_mode[i] = XMII_MODE_RMII; |
| break; |
| case PHY_INTERFACE_MODE_RGMII: |
| case PHY_INTERFACE_MODE_RGMII_ID: |
| case PHY_INTERFACE_MODE_RGMII_RXID: |
| case PHY_INTERFACE_MODE_RGMII_TXID: |
| mii->xmii_mode[i] = XMII_MODE_RGMII; |
| break; |
| default: |
| dev_err(dev, "Unsupported PHY mode %s!\n", |
| phy_modes(ports[i].phy_mode)); |
| } |
| |
| mii->phy_mac[i] = ports[i].role; |
| } |
| return 0; |
| } |
| |
| static int sja1105_init_static_fdb(struct sja1105_private *priv) |
| { |
| struct sja1105_table *table; |
| |
| table = &priv->static_config.tables[BLK_IDX_L2_LOOKUP]; |
| |
| /* We only populate the FDB table through dynamic |
| * L2 Address Lookup entries |
| */ |
| if (table->entry_count) { |
| kfree(table->entries); |
| table->entry_count = 0; |
| } |
| return 0; |
| } |
| |
| static int sja1105_init_l2_lookup_params(struct sja1105_private *priv) |
| { |
| struct sja1105_table *table; |
| u64 max_fdb_entries = SJA1105_MAX_L2_LOOKUP_COUNT / SJA1105_NUM_PORTS; |
| struct sja1105_l2_lookup_params_entry default_l2_lookup_params = { |
| /* Learned FDB entries are forgotten after 300 seconds */ |
| .maxage = SJA1105_AGEING_TIME_MS(300000), |
| /* All entries within a FDB bin are available for learning */ |
| .dyn_tbsz = SJA1105ET_FDB_BIN_SIZE, |
| /* And the P/Q/R/S equivalent setting: */ |
| .start_dynspc = 0, |
| .maxaddrp = {max_fdb_entries, max_fdb_entries, max_fdb_entries, |
| max_fdb_entries, max_fdb_entries, }, |
| /* 2^8 + 2^5 + 2^3 + 2^2 + 2^1 + 1 in Koopman notation */ |
| .poly = 0x97, |
| /* This selects between Independent VLAN Learning (IVL) and |
| * Shared VLAN Learning (SVL) |
| */ |
| .shared_learn = true, |
| /* Don't discard management traffic based on ENFPORT - |
| * we don't perform SMAC port enforcement anyway, so |
| * what we are setting here doesn't matter. |
| */ |
| .no_enf_hostprt = false, |
| /* Don't learn SMAC for mac_fltres1 and mac_fltres0. |
| * Maybe correlate with no_linklocal_learn from bridge driver? |
| */ |
| .no_mgmt_learn = true, |
| /* P/Q/R/S only */ |
| .use_static = true, |
| /* Dynamically learned FDB entries can overwrite other (older) |
| * dynamic FDB entries |
| */ |
| .owr_dyn = true, |
| .drpnolearn = true, |
| }; |
| |
| table = &priv->static_config.tables[BLK_IDX_L2_LOOKUP_PARAMS]; |
| |
| if (table->entry_count) { |
| kfree(table->entries); |
| table->entry_count = 0; |
| } |
| |
| table->entries = kcalloc(SJA1105_MAX_L2_LOOKUP_PARAMS_COUNT, |
| table->ops->unpacked_entry_size, GFP_KERNEL); |
| if (!table->entries) |
| return -ENOMEM; |
| |
| table->entry_count = SJA1105_MAX_L2_LOOKUP_PARAMS_COUNT; |
| |
| /* This table only has a single entry */ |
| ((struct sja1105_l2_lookup_params_entry *)table->entries)[0] = |
| default_l2_lookup_params; |
| |
| return 0; |
| } |
| |
| static int sja1105_init_static_vlan(struct sja1105_private *priv) |
| { |
| struct sja1105_table *table; |
| struct sja1105_vlan_lookup_entry pvid = { |
| .ving_mirr = 0, |
| .vegr_mirr = 0, |
| .vmemb_port = 0, |
| .vlan_bc = 0, |
| .tag_port = 0, |
| .vlanid = 1, |
| }; |
| int i; |
| |
| table = &priv->static_config.tables[BLK_IDX_VLAN_LOOKUP]; |
| |
| /* The static VLAN table will only contain the initial pvid of 1. |
| * All other VLANs are to be configured through dynamic entries, |
| * and kept in the static configuration table as backing memory. |
| */ |
| if (table->entry_count) { |
| kfree(table->entries); |
| table->entry_count = 0; |
| } |
| |
| table->entries = kcalloc(1, table->ops->unpacked_entry_size, |
| GFP_KERNEL); |
| if (!table->entries) |
| return -ENOMEM; |
| |
| table->entry_count = 1; |
| |
| /* VLAN 1: all DT-defined ports are members; no restrictions on |
| * forwarding; always transmit priority-tagged frames as untagged. |
| */ |
| for (i = 0; i < SJA1105_NUM_PORTS; i++) { |
| pvid.vmemb_port |= BIT(i); |
| pvid.vlan_bc |= BIT(i); |
| pvid.tag_port &= ~BIT(i); |
| } |
| |
| ((struct sja1105_vlan_lookup_entry *)table->entries)[0] = pvid; |
| return 0; |
| } |
| |
| static int sja1105_init_l2_forwarding(struct sja1105_private *priv) |
| { |
| struct sja1105_l2_forwarding_entry *l2fwd; |
| struct sja1105_table *table; |
| int i, j; |
| |
| table = &priv->static_config.tables[BLK_IDX_L2_FORWARDING]; |
| |
| if (table->entry_count) { |
| kfree(table->entries); |
| table->entry_count = 0; |
| } |
| |
| table->entries = kcalloc(SJA1105_MAX_L2_FORWARDING_COUNT, |
| table->ops->unpacked_entry_size, GFP_KERNEL); |
| if (!table->entries) |
| return -ENOMEM; |
| |
| table->entry_count = SJA1105_MAX_L2_FORWARDING_COUNT; |
| |
| l2fwd = table->entries; |
| |
| /* First 5 entries define the forwarding rules */ |
| for (i = 0; i < SJA1105_NUM_PORTS; i++) { |
| unsigned int upstream = dsa_upstream_port(priv->ds, i); |
| |
| for (j = 0; j < SJA1105_NUM_TC; j++) |
| l2fwd[i].vlan_pmap[j] = j; |
| |
| if (i == upstream) |
| continue; |
| |
| sja1105_port_allow_traffic(l2fwd, i, upstream, true); |
| sja1105_port_allow_traffic(l2fwd, upstream, i, true); |
| } |
| /* Next 8 entries define VLAN PCP mapping from ingress to egress. |
| * Create a one-to-one mapping. |
| */ |
| for (i = 0; i < SJA1105_NUM_TC; i++) |
| for (j = 0; j < SJA1105_NUM_PORTS; j++) |
| l2fwd[SJA1105_NUM_PORTS + i].vlan_pmap[j] = i; |
| |
| return 0; |
| } |
| |
| static int sja1105_init_l2_forwarding_params(struct sja1105_private *priv) |
| { |
| struct sja1105_l2_forwarding_params_entry default_l2fwd_params = { |
| /* Disallow dynamic reconfiguration of vlan_pmap */ |
| .max_dynp = 0, |
| /* Use a single memory partition for all ingress queues */ |
| .part_spc = { SJA1105_MAX_FRAME_MEMORY, 0, 0, 0, 0, 0, 0, 0 }, |
| }; |
| struct sja1105_table *table; |
| |
| table = &priv->static_config.tables[BLK_IDX_L2_FORWARDING_PARAMS]; |
| |
| if (table->entry_count) { |
| kfree(table->entries); |
| table->entry_count = 0; |
| } |
| |
| table->entries = kcalloc(SJA1105_MAX_L2_FORWARDING_PARAMS_COUNT, |
| table->ops->unpacked_entry_size, GFP_KERNEL); |
| if (!table->entries) |
| return -ENOMEM; |
| |
| table->entry_count = SJA1105_MAX_L2_FORWARDING_PARAMS_COUNT; |
| |
| /* This table only has a single entry */ |
| ((struct sja1105_l2_forwarding_params_entry *)table->entries)[0] = |
| default_l2fwd_params; |
| |
| return 0; |
| } |
| |
| static int sja1105_init_general_params(struct sja1105_private *priv) |
| { |
| struct sja1105_general_params_entry default_general_params = { |
| /* Allow dynamic changing of the mirror port */ |
| .mirr_ptacu = true, |
| .switchid = priv->ds->index, |
| /* Priority queue for link-local management frames |
| * (both ingress to and egress from CPU - PTP, STP etc) |
| */ |
| .hostprio = 7, |
| .mac_fltres1 = SJA1105_LINKLOCAL_FILTER_A, |
| .mac_flt1 = SJA1105_LINKLOCAL_FILTER_A_MASK, |
| .incl_srcpt1 = false, |
| .send_meta1 = false, |
| .mac_fltres0 = SJA1105_LINKLOCAL_FILTER_B, |
| .mac_flt0 = SJA1105_LINKLOCAL_FILTER_B_MASK, |
| .incl_srcpt0 = false, |
| .send_meta0 = false, |
| /* The destination for traffic matching mac_fltres1 and |
| * mac_fltres0 on all ports except host_port. Such traffic |
| * receieved on host_port itself would be dropped, except |
| * by installing a temporary 'management route' |
| */ |
| .host_port = dsa_upstream_port(priv->ds, 0), |
| /* Default to an invalid value */ |
| .mirr_port = SJA1105_NUM_PORTS, |
| /* Link-local traffic received on casc_port will be forwarded |
| * to host_port without embedding the source port and device ID |
| * info in the destination MAC address (presumably because it |
| * is a cascaded port and a downstream SJA switch already did |
| * that). Default to an invalid port (to disable the feature) |
| * and overwrite this if we find any DSA (cascaded) ports. |
| */ |
| .casc_port = SJA1105_NUM_PORTS, |
| /* No TTEthernet */ |
| .vllupformat = 0, |
| .vlmarker = 0, |
| .vlmask = 0, |
| /* Only update correctionField for 1-step PTP (L2 transport) */ |
| .ignore2stf = 0, |
| /* Forcefully disable VLAN filtering by telling |
| * the switch that VLAN has a different EtherType. |
| */ |
| .tpid = ETH_P_SJA1105, |
| .tpid2 = ETH_P_SJA1105, |
| }; |
| struct sja1105_table *table; |
| int i, k = 0; |
| |
| for (i = 0; i < SJA1105_NUM_PORTS; i++) { |
| if (dsa_is_dsa_port(priv->ds, i)) |
| default_general_params.casc_port = i; |
| else if (dsa_is_user_port(priv->ds, i)) |
| priv->ports[i].mgmt_slot = k++; |
| } |
| |
| table = &priv->static_config.tables[BLK_IDX_GENERAL_PARAMS]; |
| |
| if (table->entry_count) { |
| kfree(table->entries); |
| table->entry_count = 0; |
| } |
| |
| table->entries = kcalloc(SJA1105_MAX_GENERAL_PARAMS_COUNT, |
| table->ops->unpacked_entry_size, GFP_KERNEL); |
| if (!table->entries) |
| return -ENOMEM; |
| |
| table->entry_count = SJA1105_MAX_GENERAL_PARAMS_COUNT; |
| |
| /* This table only has a single entry */ |
| ((struct sja1105_general_params_entry *)table->entries)[0] = |
| default_general_params; |
| |
| return 0; |
| } |
| |
| #define SJA1105_RATE_MBPS(speed) (((speed) * 64000) / 1000) |
| |
| static void sja1105_setup_policer(struct sja1105_l2_policing_entry *policing, |
| int index) |
| { |
| policing[index].sharindx = index; |
| policing[index].smax = 65535; /* Burst size in bytes */ |
| policing[index].rate = SJA1105_RATE_MBPS(1000); |
| policing[index].maxlen = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; |
| policing[index].partition = 0; |
| } |
| |
| static int sja1105_init_l2_policing(struct sja1105_private *priv) |
| { |
| struct sja1105_l2_policing_entry *policing; |
| struct sja1105_table *table; |
| int i, j, k; |
| |
| table = &priv->static_config.tables[BLK_IDX_L2_POLICING]; |
| |
| /* Discard previous L2 Policing Table */ |
| if (table->entry_count) { |
| kfree(table->entries); |
| table->entry_count = 0; |
| } |
| |
| table->entries = kcalloc(SJA1105_MAX_L2_POLICING_COUNT, |
| table->ops->unpacked_entry_size, GFP_KERNEL); |
| if (!table->entries) |
| return -ENOMEM; |
| |
| table->entry_count = SJA1105_MAX_L2_POLICING_COUNT; |
| |
| policing = table->entries; |
| |
| /* k sweeps through all unicast policers (0-39). |
| * bcast sweeps through policers 40-44. |
| */ |
| for (i = 0, k = 0; i < SJA1105_NUM_PORTS; i++) { |
| int bcast = (SJA1105_NUM_PORTS * SJA1105_NUM_TC) + i; |
| |
| for (j = 0; j < SJA1105_NUM_TC; j++, k++) |
| sja1105_setup_policer(policing, k); |
| |
| /* Set up this port's policer for broadcast traffic */ |
| sja1105_setup_policer(policing, bcast); |
| } |
| return 0; |
| } |
| |
| static int sja1105_static_config_load(struct sja1105_private *priv, |
| struct sja1105_dt_port *ports) |
| { |
| int rc; |
| |
| sja1105_static_config_free(&priv->static_config); |
| rc = sja1105_static_config_init(&priv->static_config, |
| priv->info->static_ops, |
| priv->info->device_id); |
| if (rc) |
| return rc; |
| |
| /* Build static configuration */ |
| rc = sja1105_init_mac_settings(priv); |
| if (rc < 0) |
| return rc; |
| rc = sja1105_init_mii_settings(priv, ports); |
| if (rc < 0) |
| return rc; |
| rc = sja1105_init_static_fdb(priv); |
| if (rc < 0) |
| return rc; |
| rc = sja1105_init_static_vlan(priv); |
| if (rc < 0) |
| return rc; |
| rc = sja1105_init_l2_lookup_params(priv); |
| if (rc < 0) |
| return rc; |
| rc = sja1105_init_l2_forwarding(priv); |
| if (rc < 0) |
| return rc; |
| rc = sja1105_init_l2_forwarding_params(priv); |
| if (rc < 0) |
| return rc; |
| rc = sja1105_init_l2_policing(priv); |
| if (rc < 0) |
| return rc; |
| rc = sja1105_init_general_params(priv); |
| if (rc < 0) |
| return rc; |
| |
| /* Send initial configuration to hardware via SPI */ |
| return sja1105_static_config_upload(priv); |
| } |
| |
| static int sja1105_parse_rgmii_delays(struct sja1105_private *priv, |
| const struct sja1105_dt_port *ports) |
| { |
| int i; |
| |
| for (i = 0; i < SJA1105_NUM_PORTS; i++) { |
| if (ports[i].role == XMII_MAC) |
| continue; |
| |
| if (ports[i].phy_mode == PHY_INTERFACE_MODE_RGMII_RXID || |
| ports[i].phy_mode == PHY_INTERFACE_MODE_RGMII_ID) |
| priv->rgmii_rx_delay[i] = true; |
| |
| if (ports[i].phy_mode == PHY_INTERFACE_MODE_RGMII_TXID || |
| ports[i].phy_mode == PHY_INTERFACE_MODE_RGMII_ID) |
| priv->rgmii_tx_delay[i] = true; |
| |
| if ((priv->rgmii_rx_delay[i] || priv->rgmii_tx_delay[i]) && |
| !priv->info->setup_rgmii_delay) |
| return -EINVAL; |
| } |
| return 0; |
| } |
| |
| static int sja1105_parse_ports_node(struct sja1105_private *priv, |
| struct sja1105_dt_port *ports, |
| struct device_node *ports_node) |
| { |
| struct device *dev = &priv->spidev->dev; |
| struct device_node *child; |
| |
| for_each_child_of_node(ports_node, child) { |
| struct device_node *phy_node; |
| phy_interface_t phy_mode; |
| u32 index; |
| int err; |
| |
| /* Get switch port number from DT */ |
| if (of_property_read_u32(child, "reg", &index) < 0) { |
| dev_err(dev, "Port number not defined in device tree " |
| "(property \"reg\")\n"); |
| of_node_put(child); |
| return -ENODEV; |
| } |
| |
| /* Get PHY mode from DT */ |
| err = of_get_phy_mode(child, &phy_mode); |
| if (err) { |
| dev_err(dev, "Failed to read phy-mode or " |
| "phy-interface-type property for port %d\n", |
| index); |
| of_node_put(child); |
| return -ENODEV; |
| } |
| ports[index].phy_mode = phy_mode; |
| |
| phy_node = of_parse_phandle(child, "phy-handle", 0); |
| if (!phy_node) { |
| if (!of_phy_is_fixed_link(child)) { |
| dev_err(dev, "phy-handle or fixed-link " |
| "properties missing!\n"); |
| of_node_put(child); |
| return -ENODEV; |
| } |
| /* phy-handle is missing, but fixed-link isn't. |
| * So it's a fixed link. Default to PHY role. |
| */ |
| ports[index].role = XMII_PHY; |
| } else { |
| /* phy-handle present => put port in MAC role */ |
| ports[index].role = XMII_MAC; |
| of_node_put(phy_node); |
| } |
| |
| /* The MAC/PHY role can be overridden with explicit bindings */ |
| if (of_property_read_bool(child, "sja1105,role-mac")) |
| ports[index].role = XMII_MAC; |
| else if (of_property_read_bool(child, "sja1105,role-phy")) |
| ports[index].role = XMII_PHY; |
| } |
| |
| return 0; |
| } |
| |
| static int sja1105_parse_dt(struct sja1105_private *priv, |
| struct sja1105_dt_port *ports) |
| { |
| struct device *dev = &priv->spidev->dev; |
| struct device_node *switch_node = dev->of_node; |
| struct device_node *ports_node; |
| int rc; |
| |
| ports_node = of_get_child_by_name(switch_node, "ports"); |
| if (!ports_node) { |
| dev_err(dev, "Incorrect bindings: absent \"ports\" node\n"); |
| return -ENODEV; |
| } |
| |
| rc = sja1105_parse_ports_node(priv, ports, ports_node); |
| of_node_put(ports_node); |
| |
| return rc; |
| } |
| |
| /* Convert link speed from SJA1105 to ethtool encoding */ |
| static int sja1105_speed[] = { |
| [SJA1105_SPEED_AUTO] = SPEED_UNKNOWN, |
| [SJA1105_SPEED_10MBPS] = SPEED_10, |
| [SJA1105_SPEED_100MBPS] = SPEED_100, |
| [SJA1105_SPEED_1000MBPS] = SPEED_1000, |
| }; |
| |
| /* Set link speed in the MAC configuration for a specific port. */ |
| static int sja1105_adjust_port_config(struct sja1105_private *priv, int port, |
| int speed_mbps) |
| { |
| struct sja1105_xmii_params_entry *mii; |
| struct sja1105_mac_config_entry *mac; |
| struct device *dev = priv->ds->dev; |
| sja1105_phy_interface_t phy_mode; |
| sja1105_speed_t speed; |
| int rc; |
| |
| /* On P/Q/R/S, one can read from the device via the MAC reconfiguration |
| * tables. On E/T, MAC reconfig tables are not readable, only writable. |
| * We have to *know* what the MAC looks like. For the sake of keeping |
| * the code common, we'll use the static configuration tables as a |
| * reasonable approximation for both E/T and P/Q/R/S. |
| */ |
| mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries; |
| mii = priv->static_config.tables[BLK_IDX_XMII_PARAMS].entries; |
| |
| switch (speed_mbps) { |
| case SPEED_UNKNOWN: |
| /* PHYLINK called sja1105_mac_config() to inform us about |
| * the state->interface, but AN has not completed and the |
| * speed is not yet valid. UM10944.pdf says that setting |
| * SJA1105_SPEED_AUTO at runtime disables the port, so that is |
| * ok for power consumption in case AN will never complete - |
| * otherwise PHYLINK should come back with a new update. |
| */ |
| speed = SJA1105_SPEED_AUTO; |
| break; |
| case SPEED_10: |
| speed = SJA1105_SPEED_10MBPS; |
| break; |
| case SPEED_100: |
| speed = SJA1105_SPEED_100MBPS; |
| break; |
| case SPEED_1000: |
| speed = SJA1105_SPEED_1000MBPS; |
| break; |
| default: |
| dev_err(dev, "Invalid speed %iMbps\n", speed_mbps); |
| return -EINVAL; |
| } |
| |
| /* Overwrite SJA1105_SPEED_AUTO from the static MAC configuration |
| * table, since this will be used for the clocking setup, and we no |
| * longer need to store it in the static config (already told hardware |
| * we want auto during upload phase). |
| */ |
| mac[port].speed = speed; |
| |
| /* Write to the dynamic reconfiguration tables */ |
| rc = sja1105_dynamic_config_write(priv, BLK_IDX_MAC_CONFIG, port, |
| &mac[port], true); |
| if (rc < 0) { |
| dev_err(dev, "Failed to write MAC config: %d\n", rc); |
| return rc; |
| } |
| |
| /* Reconfigure the PLLs for the RGMII interfaces (required 125 MHz at |
| * gigabit, 25 MHz at 100 Mbps and 2.5 MHz at 10 Mbps). For MII and |
| * RMII no change of the clock setup is required. Actually, changing |
| * the clock setup does interrupt the clock signal for a certain time |
| * which causes trouble for all PHYs relying on this signal. |
| */ |
| phy_mode = mii->xmii_mode[port]; |
| if (phy_mode != XMII_MODE_RGMII) |
| return 0; |
| |
| return sja1105_clocking_setup_port(priv, port); |
| } |
| |
| /* The SJA1105 MAC programming model is through the static config (the xMII |
| * Mode table cannot be dynamically reconfigured), and we have to program |
| * that early (earlier than PHYLINK calls us, anyway). |
| * So just error out in case the connected PHY attempts to change the initial |
| * system interface MII protocol from what is defined in the DT, at least for |
| * now. |
| */ |
| static bool sja1105_phy_mode_mismatch(struct sja1105_private *priv, int port, |
| phy_interface_t interface) |
| { |
| struct sja1105_xmii_params_entry *mii; |
| sja1105_phy_interface_t phy_mode; |
| |
| mii = priv->static_config.tables[BLK_IDX_XMII_PARAMS].entries; |
| phy_mode = mii->xmii_mode[port]; |
| |
| switch (interface) { |
| case PHY_INTERFACE_MODE_MII: |
| return (phy_mode != XMII_MODE_MII); |
| case PHY_INTERFACE_MODE_RMII: |
| return (phy_mode != XMII_MODE_RMII); |
| case PHY_INTERFACE_MODE_RGMII: |
| case PHY_INTERFACE_MODE_RGMII_ID: |
| case PHY_INTERFACE_MODE_RGMII_RXID: |
| case PHY_INTERFACE_MODE_RGMII_TXID: |
| return (phy_mode != XMII_MODE_RGMII); |
| default: |
| return true; |
| } |
| } |
| |
| static void sja1105_mac_config(struct dsa_switch *ds, int port, |
| unsigned int link_an_mode, |
| const struct phylink_link_state *state) |
| { |
| struct sja1105_private *priv = ds->priv; |
| |
| if (sja1105_phy_mode_mismatch(priv, port, state->interface)) |
| return; |
| |
| if (link_an_mode == MLO_AN_INBAND) { |
| dev_err(ds->dev, "In-band AN not supported!\n"); |
| return; |
| } |
| |
| sja1105_adjust_port_config(priv, port, state->speed); |
| } |
| |
| static void sja1105_mac_link_down(struct dsa_switch *ds, int port, |
| unsigned int mode, |
| phy_interface_t interface) |
| { |
| sja1105_inhibit_tx(ds->priv, BIT(port), true); |
| } |
| |
| static void sja1105_mac_link_up(struct dsa_switch *ds, int port, |
| unsigned int mode, |
| phy_interface_t interface, |
| struct phy_device *phydev) |
| { |
| sja1105_inhibit_tx(ds->priv, BIT(port), false); |
| } |
| |
| static void sja1105_phylink_validate(struct dsa_switch *ds, int port, |
| unsigned long *supported, |
| struct phylink_link_state *state) |
| { |
| /* Construct a new mask which exhaustively contains all link features |
| * supported by the MAC, and then apply that (logical AND) to what will |
| * be sent to the PHY for "marketing". |
| */ |
| __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, }; |
| struct sja1105_private *priv = ds->priv; |
| struct sja1105_xmii_params_entry *mii; |
| |
| mii = priv->static_config.tables[BLK_IDX_XMII_PARAMS].entries; |
| |
| /* include/linux/phylink.h says: |
| * When @state->interface is %PHY_INTERFACE_MODE_NA, phylink |
| * expects the MAC driver to return all supported link modes. |
| */ |
| if (state->interface != PHY_INTERFACE_MODE_NA && |
| sja1105_phy_mode_mismatch(priv, port, state->interface)) { |
| bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS); |
| return; |
| } |
| |
| /* The MAC does not support pause frames, and also doesn't |
| * support half-duplex traffic modes. |
| */ |
| phylink_set(mask, Autoneg); |
| phylink_set(mask, MII); |
| phylink_set(mask, 10baseT_Full); |
| phylink_set(mask, 100baseT_Full); |
| if (mii->xmii_mode[port] == XMII_MODE_RGMII) |
| phylink_set(mask, 1000baseT_Full); |
| |
| bitmap_and(supported, supported, mask, __ETHTOOL_LINK_MODE_MASK_NBITS); |
| bitmap_and(state->advertising, state->advertising, mask, |
| __ETHTOOL_LINK_MODE_MASK_NBITS); |
| } |
| |
| static int |
| sja1105_find_static_fdb_entry(struct sja1105_private *priv, int port, |
| const struct sja1105_l2_lookup_entry *requested) |
| { |
| struct sja1105_l2_lookup_entry *l2_lookup; |
| struct sja1105_table *table; |
| int i; |
| |
| table = &priv->static_config.tables[BLK_IDX_L2_LOOKUP]; |
| l2_lookup = table->entries; |
| |
| for (i = 0; i < table->entry_count; i++) |
| if (l2_lookup[i].macaddr == requested->macaddr && |
| l2_lookup[i].vlanid == requested->vlanid && |
| l2_lookup[i].destports & BIT(port)) |
| return i; |
| |
| return -1; |
| } |
| |
| /* We want FDB entries added statically through the bridge command to persist |
| * across switch resets, which are a common thing during normal SJA1105 |
| * operation. So we have to back them up in the static configuration tables |
| * and hence apply them on next static config upload... yay! |
| */ |
| static int |
| sja1105_static_fdb_change(struct sja1105_private *priv, int port, |
| const struct sja1105_l2_lookup_entry *requested, |
| bool keep) |
| { |
| struct sja1105_l2_lookup_entry *l2_lookup; |
| struct sja1105_table *table; |
| int rc, match; |
| |
| table = &priv->static_config.tables[BLK_IDX_L2_LOOKUP]; |
| |
| match = sja1105_find_static_fdb_entry(priv, port, requested); |
| if (match < 0) { |
| /* Can't delete a missing entry. */ |
| if (!keep) |
| return 0; |
| |
| /* No match => new entry */ |
| rc = sja1105_table_resize(table, table->entry_count + 1); |
| if (rc) |
| return rc; |
| |
| match = table->entry_count - 1; |
| } |
| |
| /* Assign pointer after the resize (it may be new memory) */ |
| l2_lookup = table->entries; |
| |
| /* We have a match. |
| * If the job was to add this FDB entry, it's already done (mostly |
| * anyway, since the port forwarding mask may have changed, case in |
| * which we update it). |
| * Otherwise we have to delete it. |
| */ |
| if (keep) { |
| l2_lookup[match] = *requested; |
| return 0; |
| } |
| |
| /* To remove, the strategy is to overwrite the element with |
| * the last one, and then reduce the array size by 1 |
| */ |
| l2_lookup[match] = l2_lookup[table->entry_count - 1]; |
| return sja1105_table_resize(table, table->entry_count - 1); |
| } |
| |
| /* First-generation switches have a 4-way set associative TCAM that |
| * holds the FDB entries. An FDB index spans from 0 to 1023 and is comprised of |
| * a "bin" (grouping of 4 entries) and a "way" (an entry within a bin). |
| * For the placement of a newly learnt FDB entry, the switch selects the bin |
| * based on a hash function, and the way within that bin incrementally. |
| */ |
| static int sja1105et_fdb_index(int bin, int way) |
| { |
| return bin * SJA1105ET_FDB_BIN_SIZE + way; |
| } |
| |
| static int sja1105et_is_fdb_entry_in_bin(struct sja1105_private *priv, int bin, |
| const u8 *addr, u16 vid, |
| struct sja1105_l2_lookup_entry *match, |
| int *last_unused) |
| { |
| int way; |
| |
| for (way = 0; way < SJA1105ET_FDB_BIN_SIZE; way++) { |
| struct sja1105_l2_lookup_entry l2_lookup = {0}; |
| int index = sja1105et_fdb_index(bin, way); |
| |
| /* Skip unused entries, optionally marking them |
| * into the return value |
| */ |
| if (sja1105_dynamic_config_read(priv, BLK_IDX_L2_LOOKUP, |
| index, &l2_lookup)) { |
| if (last_unused) |
| *last_unused = way; |
| continue; |
| } |
| |
| if (l2_lookup.macaddr == ether_addr_to_u64(addr) && |
| l2_lookup.vlanid == vid) { |
| if (match) |
| *match = l2_lookup; |
| return way; |
| } |
| } |
| /* Return an invalid entry index if not found */ |
| return -1; |
| } |
| |
| int sja1105et_fdb_add(struct dsa_switch *ds, int port, |
| const unsigned char *addr, u16 vid) |
| { |
| struct sja1105_l2_lookup_entry l2_lookup = {0}; |
| struct sja1105_private *priv = ds->priv; |
| struct device *dev = ds->dev; |
| int last_unused = -1; |
| int bin, way, rc; |
| |
| bin = sja1105et_fdb_hash(priv, addr, vid); |
| |
| way = sja1105et_is_fdb_entry_in_bin(priv, bin, addr, vid, |
| &l2_lookup, &last_unused); |
| if (way >= 0) { |
| /* We have an FDB entry. Is our port in the destination |
| * mask? If yes, we need to do nothing. If not, we need |
| * to rewrite the entry by adding this port to it. |
| */ |
| if (l2_lookup.destports & BIT(port)) |
| return 0; |
| l2_lookup.destports |= BIT(port); |
| } else { |
| int index = sja1105et_fdb_index(bin, way); |
| |
| /* We don't have an FDB entry. We construct a new one and |
| * try to find a place for it within the FDB table. |
| */ |
| l2_lookup.macaddr = ether_addr_to_u64(addr); |
| l2_lookup.destports = BIT(port); |
| l2_lookup.vlanid = vid; |
| |
| if (last_unused >= 0) { |
| way = last_unused; |
| } else { |
| /* Bin is full, need to evict somebody. |
| * Choose victim at random. If you get these messages |
| * often, you may need to consider changing the |
| * distribution function: |
| * static_config[BLK_IDX_L2_LOOKUP_PARAMS].entries->poly |
| */ |
| get_random_bytes(&way, sizeof(u8)); |
| way %= SJA1105ET_FDB_BIN_SIZE; |
| dev_warn(dev, "Warning, FDB bin %d full while adding entry for %pM. Evicting entry %u.\n", |
| bin, addr, way); |
| /* Evict entry */ |
| sja1105_dynamic_config_write(priv, BLK_IDX_L2_LOOKUP, |
| index, NULL, false); |
| } |
| } |
| l2_lookup.index = sja1105et_fdb_index(bin, way); |
| |
| rc = sja1105_dynamic_config_write(priv, BLK_IDX_L2_LOOKUP, |
| l2_lookup.index, &l2_lookup, |
| true); |
| if (rc < 0) |
| return rc; |
| |
| return sja1105_static_fdb_change(priv, port, &l2_lookup, true); |
| } |
| |
| int sja1105et_fdb_del(struct dsa_switch *ds, int port, |
| const unsigned char *addr, u16 vid) |
| { |
| struct sja1105_l2_lookup_entry l2_lookup = {0}; |
| struct sja1105_private *priv = ds->priv; |
| int index, bin, way, rc; |
| bool keep; |
| |
| bin = sja1105et_fdb_hash(priv, addr, vid); |
| way = sja1105et_is_fdb_entry_in_bin(priv, bin, addr, vid, |
| &l2_lookup, NULL); |
| if (way < 0) |
| return 0; |
| index = sja1105et_fdb_index(bin, way); |
| |
| /* We have an FDB entry. Is our port in the destination mask? If yes, |
| * we need to remove it. If the resulting port mask becomes empty, we |
| * need to completely evict the FDB entry. |
| * Otherwise we just write it back. |
| */ |
| l2_lookup.destports &= ~BIT(port); |
| |
| if (l2_lookup.destports) |
| keep = true; |
| else |
| keep = false; |
| |
| rc = sja1105_dynamic_config_write(priv, BLK_IDX_L2_LOOKUP, |
| index, &l2_lookup, keep); |
| if (rc < 0) |
| return rc; |
| |
| return sja1105_static_fdb_change(priv, port, &l2_lookup, keep); |
| } |
| |
| int sja1105pqrs_fdb_add(struct dsa_switch *ds, int port, |
| const unsigned char *addr, u16 vid) |
| { |
| struct sja1105_l2_lookup_entry l2_lookup = {0}; |
| struct sja1105_private *priv = ds->priv; |
| int rc, i; |
| |
| /* Search for an existing entry in the FDB table */ |
| l2_lookup.macaddr = ether_addr_to_u64(addr); |
| l2_lookup.vlanid = vid; |
| l2_lookup.iotag = SJA1105_S_TAG; |
| l2_lookup.mask_macaddr = GENMASK_ULL(ETH_ALEN * 8 - 1, 0); |
| if (dsa_port_is_vlan_filtering(dsa_to_port(ds, port))) { |
| l2_lookup.mask_vlanid = VLAN_VID_MASK; |
| l2_lookup.mask_iotag = BIT(0); |
| } else { |
| l2_lookup.mask_vlanid = 0; |
| l2_lookup.mask_iotag = 0; |
| } |
| l2_lookup.destports = BIT(port); |
| |
| rc = sja1105_dynamic_config_read(priv, BLK_IDX_L2_LOOKUP, |
| SJA1105_SEARCH, &l2_lookup); |
| if (rc == 0) { |
| /* Found and this port is already in the entry's |
| * port mask => job done |
| */ |
| if (l2_lookup.destports & BIT(port)) |
| return 0; |
| /* l2_lookup.index is populated by the switch in case it |
| * found something. |
| */ |
| l2_lookup.destports |= BIT(port); |
| goto skip_finding_an_index; |
| } |
| |
| /* Not found, so try to find an unused spot in the FDB. |
| * This is slightly inefficient because the strategy is knock-knock at |
| * every possible position from 0 to 1023. |
| */ |
| for (i = 0; i < SJA1105_MAX_L2_LOOKUP_COUNT; i++) { |
| rc = sja1105_dynamic_config_read(priv, BLK_IDX_L2_LOOKUP, |
| i, NULL); |
| if (rc < 0) |
| break; |
| } |
| if (i == SJA1105_MAX_L2_LOOKUP_COUNT) { |
| dev_err(ds->dev, "FDB is full, cannot add entry.\n"); |
| return -EINVAL; |
| } |
| l2_lookup.lockeds = true; |
| l2_lookup.index = i; |
| |
| skip_finding_an_index: |
| rc = sja1105_dynamic_config_write(priv, BLK_IDX_L2_LOOKUP, |
| l2_lookup.index, &l2_lookup, |
| true); |
| if (rc < 0) |
| return rc; |
| |
| return sja1105_static_fdb_change(priv, port, &l2_lookup, true); |
| } |
| |
| int sja1105pqrs_fdb_del(struct dsa_switch *ds, int port, |
| const unsigned char *addr, u16 vid) |
| { |
| struct sja1105_l2_lookup_entry l2_lookup = {0}; |
| struct sja1105_private *priv = ds->priv; |
| bool keep; |
| int rc; |
| |
| l2_lookup.macaddr = ether_addr_to_u64(addr); |
| l2_lookup.vlanid = vid; |
| l2_lookup.iotag = SJA1105_S_TAG; |
| l2_lookup.mask_macaddr = GENMASK_ULL(ETH_ALEN * 8 - 1, 0); |
| if (dsa_port_is_vlan_filtering(dsa_to_port(ds, port))) { |
| l2_lookup.mask_vlanid = VLAN_VID_MASK; |
| l2_lookup.mask_iotag = BIT(0); |
| } else { |
| l2_lookup.mask_vlanid = 0; |
| l2_lookup.mask_iotag = 0; |
| } |
| l2_lookup.destports = BIT(port); |
| |
| rc = sja1105_dynamic_config_read(priv, BLK_IDX_L2_LOOKUP, |
| SJA1105_SEARCH, &l2_lookup); |
| if (rc < 0) |
| return 0; |
| |
| l2_lookup.destports &= ~BIT(port); |
| |
| /* Decide whether we remove just this port from the FDB entry, |
| * or if we remove it completely. |
| */ |
| if (l2_lookup.destports) |
| keep = true; |
| else |
| keep = false; |
| |
| rc = sja1105_dynamic_config_write(priv, BLK_IDX_L2_LOOKUP, |
| l2_lookup.index, &l2_lookup, keep); |
| if (rc < 0) |
| return rc; |
| |
| return sja1105_static_fdb_change(priv, port, &l2_lookup, keep); |
| } |
| |
| static int sja1105_fdb_add(struct dsa_switch *ds, int port, |
| const unsigned char *addr, u16 vid) |
| { |
| struct sja1105_private *priv = ds->priv; |
| |
| /* dsa_8021q is in effect when the bridge's vlan_filtering isn't, |
| * so the switch still does some VLAN processing internally. |
| * But Shared VLAN Learning (SVL) is also active, and it will take |
| * care of autonomous forwarding between the unique pvid's of each |
| * port. Here we just make sure that users can't add duplicate FDB |
| * entries when in this mode - the actual VID doesn't matter except |
| * for what gets printed in 'bridge fdb show'. In the case of zero, |
| * no VID gets printed at all. |
| */ |
| if (!dsa_port_is_vlan_filtering(dsa_to_port(ds, port))) |
| vid = 0; |
| |
| return priv->info->fdb_add_cmd(ds, port, addr, vid); |
| } |
| |
| static int sja1105_fdb_del(struct dsa_switch *ds, int port, |
| const unsigned char *addr, u16 vid) |
| { |
| struct sja1105_private *priv = ds->priv; |
| |
| if (!dsa_port_is_vlan_filtering(dsa_to_port(ds, port))) |
| vid = 0; |
| |
| return priv->info->fdb_del_cmd(ds, port, addr, vid); |
| } |
| |
| static int sja1105_fdb_dump(struct dsa_switch *ds, int port, |
| dsa_fdb_dump_cb_t *cb, void *data) |
| { |
| struct sja1105_private *priv = ds->priv; |
| struct device *dev = ds->dev; |
| int i; |
| |
| for (i = 0; i < SJA1105_MAX_L2_LOOKUP_COUNT; i++) { |
| struct sja1105_l2_lookup_entry l2_lookup = {0}; |
| u8 macaddr[ETH_ALEN]; |
| int rc; |
| |
| rc = sja1105_dynamic_config_read(priv, BLK_IDX_L2_LOOKUP, |
| i, &l2_lookup); |
| /* No fdb entry at i, not an issue */ |
| if (rc == -ENOENT) |
| continue; |
| if (rc) { |
| dev_err(dev, "Failed to dump FDB: %d\n", rc); |
| return rc; |
| } |
| |
| /* FDB dump callback is per port. This means we have to |
| * disregard a valid entry if it's not for this port, even if |
| * only to revisit it later. This is inefficient because the |
| * 1024-sized FDB table needs to be traversed 4 times through |
| * SPI during a 'bridge fdb show' command. |
| */ |
| if (!(l2_lookup.destports & BIT(port))) |
| continue; |
| u64_to_ether_addr(l2_lookup.macaddr, macaddr); |
| |
| /* We need to hide the dsa_8021q VLANs from the user. */ |
| if (!dsa_port_is_vlan_filtering(dsa_to_port(ds, port))) |
| l2_lookup.vlanid = 0; |
| cb(macaddr, l2_lookup.vlanid, l2_lookup.lockeds, data); |
| } |
| return 0; |
| } |
| |
| /* This callback needs to be present */ |
| static int sja1105_mdb_prepare(struct dsa_switch *ds, int port, |
| const struct switchdev_obj_port_mdb *mdb) |
| { |
| return 0; |
| } |
| |
| static void sja1105_mdb_add(struct dsa_switch *ds, int port, |
| const struct switchdev_obj_port_mdb *mdb) |
| { |
| sja1105_fdb_add(ds, port, mdb->addr, mdb->vid); |
| } |
| |
| static int sja1105_mdb_del(struct dsa_switch *ds, int port, |
| const struct switchdev_obj_port_mdb *mdb) |
| { |
| return sja1105_fdb_del(ds, port, mdb->addr, mdb->vid); |
| } |
| |
| static int sja1105_bridge_member(struct dsa_switch *ds, int port, |
| struct net_device *br, bool member) |
| { |
| struct sja1105_l2_forwarding_entry *l2_fwd; |
| struct sja1105_private *priv = ds->priv; |
| int i, rc; |
| |
| l2_fwd = priv->static_config.tables[BLK_IDX_L2_FORWARDING].entries; |
| |
| for (i = 0; i < SJA1105_NUM_PORTS; i++) { |
| /* Add this port to the forwarding matrix of the |
| * other ports in the same bridge, and viceversa. |
| */ |
| if (!dsa_is_user_port(ds, i)) |
| continue; |
| /* For the ports already under the bridge, only one thing needs |
| * to be done, and that is to add this port to their |
| * reachability domain. So we can perform the SPI write for |
| * them immediately. However, for this port itself (the one |
| * that is new to the bridge), we need to add all other ports |
| * to its reachability domain. So we do that incrementally in |
| * this loop, and perform the SPI write only at the end, once |
| * the domain contains all other bridge ports. |
| */ |
| if (i == port) |
| continue; |
| if (dsa_to_port(ds, i)->bridge_dev != br) |
| continue; |
| sja1105_port_allow_traffic(l2_fwd, i, port, member); |
| sja1105_port_allow_traffic(l2_fwd, port, i, member); |
| |
| rc = sja1105_dynamic_config_write(priv, BLK_IDX_L2_FORWARDING, |
| i, &l2_fwd[i], true); |
| if (rc < 0) |
| return rc; |
| } |
| |
| return sja1105_dynamic_config_write(priv, BLK_IDX_L2_FORWARDING, |
| port, &l2_fwd[port], true); |
| } |
| |
| static void sja1105_bridge_stp_state_set(struct dsa_switch *ds, int port, |
| u8 state) |
| { |
| struct sja1105_private *priv = ds->priv; |
| struct sja1105_mac_config_entry *mac; |
| |
| mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries; |
| |
| switch (state) { |
| case BR_STATE_DISABLED: |
| case BR_STATE_BLOCKING: |
| /* From UM10944 description of DRPDTAG (why put this there?): |
| * "Management traffic flows to the port regardless of the state |
| * of the INGRESS flag". So BPDUs are still be allowed to pass. |
| * At the moment no difference between DISABLED and BLOCKING. |
| */ |
| mac[port].ingress = false; |
| mac[port].egress = false; |
| mac[port].dyn_learn = false; |
| break; |
| case BR_STATE_LISTENING: |
| mac[port].ingress = true; |
| mac[port].egress = false; |
| mac[port].dyn_learn = false; |
| break; |
| case BR_STATE_LEARNING: |
| mac[port].ingress = true; |
| mac[port].egress = false; |
| mac[port].dyn_learn = true; |
| break; |
| case BR_STATE_FORWARDING: |
| mac[port].ingress = true; |
| mac[port].egress = true; |
| mac[port].dyn_learn = true; |
| break; |
| default: |
| dev_err(ds->dev, "invalid STP state: %d\n", state); |
| return; |
| } |
| |
| sja1105_dynamic_config_write(priv, BLK_IDX_MAC_CONFIG, port, |
| &mac[port], true); |
| } |
| |
| static int sja1105_bridge_join(struct dsa_switch *ds, int port, |
| struct net_device *br) |
| { |
| return sja1105_bridge_member(ds, port, br, true); |
| } |
| |
| static void sja1105_bridge_leave(struct dsa_switch *ds, int port, |
| struct net_device *br) |
| { |
| sja1105_bridge_member(ds, port, br, false); |
| } |
| |
| static const char * const sja1105_reset_reasons[] = { |
| [SJA1105_VLAN_FILTERING] = "VLAN filtering", |
| [SJA1105_RX_HWTSTAMPING] = "RX timestamping", |
| [SJA1105_AGEING_TIME] = "Ageing time", |
| [SJA1105_SCHEDULING] = "Time-aware scheduling", |
| }; |
| |
| /* For situations where we need to change a setting at runtime that is only |
| * available through the static configuration, resetting the switch in order |
| * to upload the new static config is unavoidable. Back up the settings we |
| * modify at runtime (currently only MAC) and restore them after uploading, |
| * such that this operation is relatively seamless. |
| */ |
| int sja1105_static_config_reload(struct sja1105_private *priv, |
| enum sja1105_reset_reason reason) |
| { |
| struct ptp_system_timestamp ptp_sts_before; |
| struct ptp_system_timestamp ptp_sts_after; |
| struct sja1105_mac_config_entry *mac; |
| int speed_mbps[SJA1105_NUM_PORTS]; |
| struct dsa_switch *ds = priv->ds; |
| s64 t1, t2, t3, t4; |
| s64 t12, t34; |
| int rc, i; |
| s64 now; |
| |
| mutex_lock(&priv->mgmt_lock); |
| |
| mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries; |
| |
| /* Back up the dynamic link speed changed by sja1105_adjust_port_config |
| * in order to temporarily restore it to SJA1105_SPEED_AUTO - which the |
| * switch wants to see in the static config in order to allow us to |
| * change it through the dynamic interface later. |
| */ |
| for (i = 0; i < SJA1105_NUM_PORTS; i++) { |
| speed_mbps[i] = sja1105_speed[mac[i].speed]; |
| mac[i].speed = SJA1105_SPEED_AUTO; |
| } |
| |
| /* No PTP operations can run right now */ |
| mutex_lock(&priv->ptp_data.lock); |
| |
| rc = __sja1105_ptp_gettimex(ds, &now, &ptp_sts_before); |
| if (rc < 0) |
| goto out_unlock_ptp; |
| |
| /* Reset switch and send updated static configuration */ |
| rc = sja1105_static_config_upload(priv); |
| if (rc < 0) |
| goto out_unlock_ptp; |
| |
| rc = __sja1105_ptp_settime(ds, 0, &ptp_sts_after); |
| if (rc < 0) |
| goto out_unlock_ptp; |
| |
| t1 = timespec64_to_ns(&ptp_sts_before.pre_ts); |
| t2 = timespec64_to_ns(&ptp_sts_before.post_ts); |
| t3 = timespec64_to_ns(&ptp_sts_after.pre_ts); |
| t4 = timespec64_to_ns(&ptp_sts_after.post_ts); |
| /* Mid point, corresponds to pre-reset PTPCLKVAL */ |
| t12 = t1 + (t2 - t1) / 2; |
| /* Mid point, corresponds to post-reset PTPCLKVAL, aka 0 */ |
| t34 = t3 + (t4 - t3) / 2; |
| /* Advance PTPCLKVAL by the time it took since its readout */ |
| now += (t34 - t12); |
| |
| __sja1105_ptp_adjtime(ds, now); |
| |
| out_unlock_ptp: |
| mutex_unlock(&priv->ptp_data.lock); |
| |
| dev_info(priv->ds->dev, |
| "Reset switch and programmed static config. Reason: %s\n", |
| sja1105_reset_reasons[reason]); |
| |
| /* Configure the CGU (PLLs) for MII and RMII PHYs. |
| * For these interfaces there is no dynamic configuration |
| * needed, since PLLs have same settings at all speeds. |
| */ |
| rc = sja1105_clocking_setup(priv); |
| if (rc < 0) |
| goto out; |
| |
| for (i = 0; i < SJA1105_NUM_PORTS; i++) { |
| rc = sja1105_adjust_port_config(priv, i, speed_mbps[i]); |
| if (rc < 0) |
| goto out; |
| } |
| out: |
| mutex_unlock(&priv->mgmt_lock); |
| |
| return rc; |
| } |
| |
| static int sja1105_pvid_apply(struct sja1105_private *priv, int port, u16 pvid) |
| { |
| struct sja1105_mac_config_entry *mac; |
| |
| mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries; |
| |
| mac[port].vlanid = pvid; |
| |
| return sja1105_dynamic_config_write(priv, BLK_IDX_MAC_CONFIG, port, |
| &mac[port], true); |
| } |
| |
| static int sja1105_is_vlan_configured(struct sja1105_private *priv, u16 vid) |
| { |
| struct sja1105_vlan_lookup_entry *vlan; |
| int count, i; |
| |
| vlan = priv->static_config.tables[BLK_IDX_VLAN_LOOKUP].entries; |
| count = priv->static_config.tables[BLK_IDX_VLAN_LOOKUP].entry_count; |
| |
| for (i = 0; i < count; i++) |
| if (vlan[i].vlanid == vid) |
| return i; |
| |
| /* Return an invalid entry index if not found */ |
| return -1; |
| } |
| |
| static int sja1105_vlan_apply(struct sja1105_private *priv, int port, u16 vid, |
| bool enabled, bool untagged) |
| { |
| struct sja1105_vlan_lookup_entry *vlan; |
| struct sja1105_table *table; |
| bool keep = true; |
| int match, rc; |
| |
| table = &priv->static_config.tables[BLK_IDX_VLAN_LOOKUP]; |
| |
| match = sja1105_is_vlan_configured(priv, vid); |
| if (match < 0) { |
| /* Can't delete a missing entry. */ |
| if (!enabled) |
| return 0; |
| rc = sja1105_table_resize(table, table->entry_count + 1); |
| if (rc) |
| return rc; |
| match = table->entry_count - 1; |
| } |
| /* Assign pointer after the resize (it's new memory) */ |
| vlan = table->entries; |
| vlan[match].vlanid = vid; |
| if (enabled) { |
| vlan[match].vlan_bc |= BIT(port); |
| vlan[match].vmemb_port |= BIT(port); |
| } else { |
| vlan[match].vlan_bc &= ~BIT(port); |
| vlan[match].vmemb_port &= ~BIT(port); |
| } |
| /* Also unset tag_port if removing this VLAN was requested, |
| * just so we don't have a confusing bitmap (no practical purpose). |
| */ |
| if (untagged || !enabled) |
| vlan[match].tag_port &= ~BIT(port); |
| else |
| vlan[match].tag_port |= BIT(port); |
| /* If there's no port left as member of this VLAN, |
| * it's time for it to go. |
| */ |
| if (!vlan[match].vmemb_port) |
| keep = false; |
| |
| dev_dbg(priv->ds->dev, |
| "%s: port %d, vid %llu, broadcast domain 0x%llx, " |
| "port members 0x%llx, tagged ports 0x%llx, keep %d\n", |
| __func__, port, vlan[match].vlanid, vlan[match].vlan_bc, |
| vlan[match].vmemb_port, vlan[match].tag_port, keep); |
| |
| rc = sja1105_dynamic_config_write(priv, BLK_IDX_VLAN_LOOKUP, vid, |
| &vlan[match], keep); |
| if (rc < 0) |
| return rc; |
| |
| if (!keep) |
| return sja1105_table_delete_entry(table, match); |
| |
| return 0; |
| } |
| |
| static int sja1105_setup_8021q_tagging(struct dsa_switch *ds, bool enabled) |
| { |
| int rc, i; |
| |
| for (i = 0; i < SJA1105_NUM_PORTS; i++) { |
| rc = dsa_port_setup_8021q_tagging(ds, i, enabled); |
| if (rc < 0) { |
| dev_err(ds->dev, "Failed to setup VLAN tagging for port %d: %d\n", |
| i, rc); |
| return rc; |
| } |
| } |
| dev_info(ds->dev, "%s switch tagging\n", |
| enabled ? "Enabled" : "Disabled"); |
| return 0; |
| } |
| |
| static enum dsa_tag_protocol |
| sja1105_get_tag_protocol(struct dsa_switch *ds, int port) |
| { |
| return DSA_TAG_PROTO_SJA1105; |
| } |
| |
| /* This callback needs to be present */ |
| static int sja1105_vlan_prepare(struct dsa_switch *ds, int port, |
| const struct switchdev_obj_port_vlan *vlan) |
| { |
| return 0; |
| } |
| |
| /* The TPID setting belongs to the General Parameters table, |
| * which can only be partially reconfigured at runtime (and not the TPID). |
| * So a switch reset is required. |
| */ |
| static int sja1105_vlan_filtering(struct dsa_switch *ds, int port, bool enabled) |
| { |
| struct sja1105_l2_lookup_params_entry *l2_lookup_params; |
| struct sja1105_general_params_entry *general_params; |
| struct sja1105_private *priv = ds->priv; |
| struct sja1105_table *table; |
| u16 tpid, tpid2; |
| int rc; |
| |
| if (enabled) { |
| /* Enable VLAN filtering. */ |
| tpid = ETH_P_8021AD; |
| tpid2 = ETH_P_8021Q; |
| } else { |
| /* Disable VLAN filtering. */ |
| tpid = ETH_P_SJA1105; |
| tpid2 = ETH_P_SJA1105; |
| } |
| |
| table = &priv->static_config.tables[BLK_IDX_GENERAL_PARAMS]; |
| general_params = table->entries; |
| /* EtherType used to identify outer tagged (S-tag) VLAN traffic */ |
| general_params->tpid = tpid; |
| /* EtherType used to identify inner tagged (C-tag) VLAN traffic */ |
| general_params->tpid2 = tpid2; |
| /* When VLAN filtering is on, we need to at least be able to |
| * decode management traffic through the "backup plan". |
| */ |
| general_params->incl_srcpt1 = enabled; |
| general_params->incl_srcpt0 = enabled; |
| |
| /* VLAN filtering => independent VLAN learning. |
| * No VLAN filtering => shared VLAN learning. |
| * |
| * In shared VLAN learning mode, untagged traffic still gets |
| * pvid-tagged, and the FDB table gets populated with entries |
| * containing the "real" (pvid or from VLAN tag) VLAN ID. |
| * However the switch performs a masked L2 lookup in the FDB, |
| * effectively only looking up a frame's DMAC (and not VID) for the |
| * forwarding decision. |
| * |
| * This is extremely convenient for us, because in modes with |
| * vlan_filtering=0, dsa_8021q actually installs unique pvid's into |
| * each front panel port. This is good for identification but breaks |
| * learning badly - the VID of the learnt FDB entry is unique, aka |
| * no frames coming from any other port are going to have it. So |
| * for forwarding purposes, this is as though learning was broken |
| * (all frames get flooded). |
| */ |
| table = &priv->static_config.tables[BLK_IDX_L2_LOOKUP_PARAMS]; |
| l2_lookup_params = table->entries; |
| l2_lookup_params->shared_learn = !enabled; |
| |
| rc = sja1105_static_config_reload(priv, SJA1105_VLAN_FILTERING); |
| if (rc) |
| dev_err(ds->dev, "Failed to change VLAN Ethertype\n"); |
| |
| /* Switch port identification based on 802.1Q is only passable |
| * if we are not under a vlan_filtering bridge. So make sure |
| * the two configurations are mutually exclusive. |
| */ |
| return sja1105_setup_8021q_tagging(ds, !enabled); |
| } |
| |
| static void sja1105_vlan_add(struct dsa_switch *ds, int port, |
| const struct switchdev_obj_port_vlan *vlan) |
| { |
| struct sja1105_private *priv = ds->priv; |
| u16 vid; |
| int rc; |
| |
| for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { |
| rc = sja1105_vlan_apply(priv, port, vid, true, vlan->flags & |
| BRIDGE_VLAN_INFO_UNTAGGED); |
| if (rc < 0) { |
| dev_err(ds->dev, "Failed to add VLAN %d to port %d: %d\n", |
| vid, port, rc); |
| return; |
| } |
| if (vlan->flags & BRIDGE_VLAN_INFO_PVID) { |
| rc = sja1105_pvid_apply(ds->priv, port, vid); |
| if (rc < 0) { |
| dev_err(ds->dev, "Failed to set pvid %d on port %d: %d\n", |
| vid, port, rc); |
| return; |
| } |
| } |
| } |
| } |
| |
| static int sja1105_vlan_del(struct dsa_switch *ds, int port, |
| const struct switchdev_obj_port_vlan *vlan) |
| { |
| struct sja1105_private *priv = ds->priv; |
| u16 vid; |
| int rc; |
| |
| for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { |
| rc = sja1105_vlan_apply(priv, port, vid, false, vlan->flags & |
| BRIDGE_VLAN_INFO_UNTAGGED); |
| if (rc < 0) { |
| dev_err(ds->dev, "Failed to remove VLAN %d from port %d: %d\n", |
| vid, port, rc); |
| return rc; |
| } |
| } |
| return 0; |
| } |
| |
| /* The programming model for the SJA1105 switch is "all-at-once" via static |
| * configuration tables. Some of these can be dynamically modified at runtime, |
| * but not the xMII mode parameters table. |
| * Furthermode, some PHYs may not have crystals for generating their clocks |
| * (e.g. RMII). Instead, their 50MHz clock is supplied via the SJA1105 port's |
| * ref_clk pin. So port clocking needs to be initialized early, before |
| * connecting to PHYs is attempted, otherwise they won't respond through MDIO. |
| * Setting correct PHY link speed does not matter now. |
| * But dsa_slave_phy_setup is called later than sja1105_setup, so the PHY |
| * bindings are not yet parsed by DSA core. We need to parse early so that we |
| * can populate the xMII mode parameters table. |
| */ |
| static int sja1105_setup(struct dsa_switch *ds) |
| { |
| struct sja1105_dt_port ports[SJA1105_NUM_PORTS]; |
| struct sja1105_private *priv = ds->priv; |
| int rc; |
| |
| rc = sja1105_parse_dt(priv, ports); |
| if (rc < 0) { |
| dev_err(ds->dev, "Failed to parse DT: %d\n", rc); |
| return rc; |
| } |
| |
| /* Error out early if internal delays are required through DT |
| * and we can't apply them. |
| */ |
| rc = sja1105_parse_rgmii_delays(priv, ports); |
| if (rc < 0) { |
| dev_err(ds->dev, "RGMII delay not supported\n"); |
| return rc; |
| } |
| |
| rc = sja1105_ptp_clock_register(ds); |
| if (rc < 0) { |
| dev_err(ds->dev, "Failed to register PTP clock: %d\n", rc); |
| return rc; |
| } |
| /* Create and send configuration down to device */ |
| rc = sja1105_static_config_load(priv, ports); |
| if (rc < 0) { |
| dev_err(ds->dev, "Failed to load static config: %d\n", rc); |
| return rc; |
| } |
| /* Configure the CGU (PHY link modes and speeds) */ |
| rc = sja1105_clocking_setup(priv); |
| if (rc < 0) { |
| dev_err(ds->dev, "Failed to configure MII clocking: %d\n", rc); |
| return rc; |
| } |
| /* On SJA1105, VLAN filtering per se is always enabled in hardware. |
| * The only thing we can do to disable it is lie about what the 802.1Q |
| * EtherType is. |
| * So it will still try to apply VLAN filtering, but all ingress |
| * traffic (except frames received with EtherType of ETH_P_SJA1105) |
| * will be internally tagged with a distorted VLAN header where the |
| * TPID is ETH_P_SJA1105, and the VLAN ID is the port pvid. |
| */ |
| ds->vlan_filtering_is_global = true; |
| |
| /* Advertise the 8 egress queues */ |
| ds->num_tx_queues = SJA1105_NUM_TC; |
| |
| /* The DSA/switchdev model brings up switch ports in standalone mode by |
| * default, and that means vlan_filtering is 0 since they're not under |
| * a bridge, so it's safe to set up switch tagging at this time. |
| */ |
| return sja1105_setup_8021q_tagging(ds, true); |
| } |
| |
| static void sja1105_teardown(struct dsa_switch *ds) |
| { |
| struct sja1105_private *priv = ds->priv; |
| |
| sja1105_tas_teardown(ds); |
| sja1105_ptp_clock_unregister(ds); |
| sja1105_static_config_free(&priv->static_config); |
| } |
| |
| static int sja1105_port_enable(struct dsa_switch *ds, int port, |
| struct phy_device *phy) |
| { |
| struct net_device *slave; |
| |
| if (!dsa_is_user_port(ds, port)) |
| return 0; |
| |
| slave = dsa_to_port(ds, port)->slave; |
| |
| slave->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; |
| |
| return 0; |
| } |
| |
| static int sja1105_mgmt_xmit(struct dsa_switch *ds, int port, int slot, |
| struct sk_buff *skb, bool takets) |
| { |
| struct sja1105_mgmt_entry mgmt_route = {0}; |
| struct sja1105_private *priv = ds->priv; |
| struct ethhdr *hdr; |
| int timeout = 10; |
| int rc; |
| |
| hdr = eth_hdr(skb); |
| |
| mgmt_route.macaddr = ether_addr_to_u64(hdr->h_dest); |
| mgmt_route.destports = BIT(port); |
| mgmt_route.enfport = 1; |
| mgmt_route.tsreg = 0; |
| mgmt_route.takets = takets; |
| |
| rc = sja1105_dynamic_config_write(priv, BLK_IDX_MGMT_ROUTE, |
| slot, &mgmt_route, true); |
| if (rc < 0) { |
| kfree_skb(skb); |
| return rc; |
| } |
| |
| /* Transfer skb to the host port. */ |
| dsa_enqueue_skb(skb, dsa_to_port(ds, port)->slave); |
| |
| /* Wait until the switch has processed the frame */ |
| do { |
| rc = sja1105_dynamic_config_read(priv, BLK_IDX_MGMT_ROUTE, |
| slot, &mgmt_route); |
| if (rc < 0) { |
| dev_err_ratelimited(priv->ds->dev, |
| "failed to poll for mgmt route\n"); |
| continue; |
| } |
| |
| /* UM10944: The ENFPORT flag of the respective entry is |
| * cleared when a match is found. The host can use this |
| * flag as an acknowledgment. |
| */ |
| cpu_relax(); |
| } while (mgmt_route.enfport && --timeout); |
| |
| if (!timeout) { |
| /* Clean up the management route so that a follow-up |
| * frame may not match on it by mistake. |
| * This is only hardware supported on P/Q/R/S - on E/T it is |
| * a no-op and we are silently discarding the -EOPNOTSUPP. |
| */ |
| sja1105_dynamic_config_write(priv, BLK_IDX_MGMT_ROUTE, |
| slot, &mgmt_route, false); |
| dev_err_ratelimited(priv->ds->dev, "xmit timed out\n"); |
| } |
| |
| return NETDEV_TX_OK; |
| } |
| |
| /* Deferred work is unfortunately necessary because setting up the management |
| * route cannot be done from atomit context (SPI transfer takes a sleepable |
| * lock on the bus) |
| */ |
| static netdev_tx_t sja1105_port_deferred_xmit(struct dsa_switch *ds, int port, |
| struct sk_buff *skb) |
| { |
| struct sja1105_private *priv = ds->priv; |
| struct sja1105_port *sp = &priv->ports[port]; |
| int slot = sp->mgmt_slot; |
| struct sk_buff *clone; |
| |
| /* The tragic fact about the switch having 4x2 slots for installing |
| * management routes is that all of them except one are actually |
| * useless. |
| * If 2 slots are simultaneously configured for two BPDUs sent to the |
| * same (multicast) DMAC but on different egress ports, the switch |
| * would confuse them and redirect first frame it receives on the CPU |
| * port towards the port configured on the numerically first slot |
| * (therefore wrong port), then second received frame on second slot |
| * (also wrong port). |
| * So for all practical purposes, there needs to be a lock that |
| * prevents that from happening. The slot used here is utterly useless |
| * (could have simply been 0 just as fine), but we are doing it |
| * nonetheless, in case a smarter idea ever comes up in the future. |
| */ |
| mutex_lock(&priv->mgmt_lock); |
| |
| /* The clone, if there, was made by dsa_skb_tx_timestamp */ |
| clone = DSA_SKB_CB(skb)->clone; |
| |
| sja1105_mgmt_xmit(ds, port, slot, skb, !!clone); |
| |
| if (!clone) |
| goto out; |
| |
| sja1105_ptp_txtstamp_skb(ds, slot, clone); |
| |
| out: |
| mutex_unlock(&priv->mgmt_lock); |
| return NETDEV_TX_OK; |
| } |
| |
| /* The MAXAGE setting belongs to the L2 Forwarding Parameters table, |
| * which cannot be reconfigured at runtime. So a switch reset is required. |
| */ |
| static int sja1105_set_ageing_time(struct dsa_switch *ds, |
| unsigned int ageing_time) |
| { |
| struct sja1105_l2_lookup_params_entry *l2_lookup_params; |
| struct sja1105_private *priv = ds->priv; |
| struct sja1105_table *table; |
| unsigned int maxage; |
| |
| table = &priv->static_config.tables[BLK_IDX_L2_LOOKUP_PARAMS]; |
| l2_lookup_params = table->entries; |
| |
| maxage = SJA1105_AGEING_TIME_MS(ageing_time); |
| |
| if (l2_lookup_params->maxage == maxage) |
| return 0; |
| |
| l2_lookup_params->maxage = maxage; |
| |
| return sja1105_static_config_reload(priv, SJA1105_AGEING_TIME); |
| } |
| |
| static int sja1105_port_setup_tc(struct dsa_switch *ds, int port, |
| enum tc_setup_type type, |
| void *type_data) |
| { |
| switch (type) { |
| case TC_SETUP_QDISC_TAPRIO: |
| return sja1105_setup_tc_taprio(ds, port, type_data); |
| default: |
| return -EOPNOTSUPP; |
| } |
| } |
| |
| /* We have a single mirror (@to) port, but can configure ingress and egress |
| * mirroring on all other (@from) ports. |
| * We need to allow mirroring rules only as long as the @to port is always the |
| * same, and we need to unset the @to port from mirr_port only when there is no |
| * mirroring rule that references it. |
| */ |
| static int sja1105_mirror_apply(struct sja1105_private *priv, int from, int to, |
| bool ingress, bool enabled) |
| { |
| struct sja1105_general_params_entry *general_params; |
| struct sja1105_mac_config_entry *mac; |
| struct sja1105_table *table; |
| bool already_enabled; |
| u64 new_mirr_port; |
| int rc; |
| |
| table = &priv->static_config.tables[BLK_IDX_GENERAL_PARAMS]; |
| general_params = table->entries; |
| |
| mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries; |
| |
| already_enabled = (general_params->mirr_port != SJA1105_NUM_PORTS); |
| if (already_enabled && enabled && general_params->mirr_port != to) { |
| dev_err(priv->ds->dev, |
| "Delete mirroring rules towards port %llu first\n", |
| general_params->mirr_port); |
| return -EBUSY; |
| } |
| |
| new_mirr_port = to; |
| if (!enabled) { |
| bool keep = false; |
| int port; |
| |
| /* Anybody still referencing mirr_port? */ |
| for (port = 0; port < SJA1105_NUM_PORTS; port++) { |
| if (mac[port].ing_mirr || mac[port].egr_mirr) { |
| keep = true; |
| break; |
| } |
| } |
| /* Unset already_enabled for next time */ |
| if (!keep) |
| new_mirr_port = SJA1105_NUM_PORTS; |
| } |
| if (new_mirr_port != general_params->mirr_port) { |
| general_params->mirr_port = new_mirr_port; |
| |
| rc = sja1105_dynamic_config_write(priv, BLK_IDX_GENERAL_PARAMS, |
| 0, general_params, true); |
| if (rc < 0) |
| return rc; |
| } |
| |
| if (ingress) |
| mac[from].ing_mirr = enabled; |
| else |
| mac[from].egr_mirr = enabled; |
| |
| return sja1105_dynamic_config_write(priv, BLK_IDX_MAC_CONFIG, from, |
| &mac[from], true); |
| } |
| |
| static int sja1105_mirror_add(struct dsa_switch *ds, int port, |
| struct dsa_mall_mirror_tc_entry *mirror, |
| bool ingress) |
| { |
| return sja1105_mirror_apply(ds->priv, port, mirror->to_local_port, |
| ingress, true); |
| } |
| |
| static void sja1105_mirror_del(struct dsa_switch *ds, int port, |
| struct dsa_mall_mirror_tc_entry *mirror) |
| { |
| sja1105_mirror_apply(ds->priv, port, mirror->to_local_port, |
| mirror->ingress, false); |
| } |
| |
| static const struct dsa_switch_ops sja1105_switch_ops = { |
| .get_tag_protocol = sja1105_get_tag_protocol, |
| .setup = sja1105_setup, |
| .teardown = sja1105_teardown, |
| .set_ageing_time = sja1105_set_ageing_time, |
| .phylink_validate = sja1105_phylink_validate, |
| .phylink_mac_config = sja1105_mac_config, |
| .phylink_mac_link_up = sja1105_mac_link_up, |
| .phylink_mac_link_down = sja1105_mac_link_down, |
| .get_strings = sja1105_get_strings, |
| .get_ethtool_stats = sja1105_get_ethtool_stats, |
| .get_sset_count = sja1105_get_sset_count, |
| .get_ts_info = sja1105_get_ts_info, |
| .port_enable = sja1105_port_enable, |
| .port_fdb_dump = sja1105_fdb_dump, |
| .port_fdb_add = sja1105_fdb_add, |
| .port_fdb_del = sja1105_fdb_del, |
| .port_bridge_join = sja1105_bridge_join, |
| .port_bridge_leave = sja1105_bridge_leave, |
| .port_stp_state_set = sja1105_bridge_stp_state_set, |
| .port_vlan_prepare = sja1105_vlan_prepare, |
| .port_vlan_filtering = sja1105_vlan_filtering, |
| .port_vlan_add = sja1105_vlan_add, |
| .port_vlan_del = sja1105_vlan_del, |
| .port_mdb_prepare = sja1105_mdb_prepare, |
| .port_mdb_add = sja1105_mdb_add, |
| .port_mdb_del = sja1105_mdb_del, |
| .port_deferred_xmit = sja1105_port_deferred_xmit, |
| .port_hwtstamp_get = sja1105_hwtstamp_get, |
| .port_hwtstamp_set = sja1105_hwtstamp_set, |
| .port_rxtstamp = sja1105_port_rxtstamp, |
| .port_txtstamp = sja1105_port_txtstamp, |
| .port_setup_tc = sja1105_port_setup_tc, |
| .port_mirror_add = sja1105_mirror_add, |
| .port_mirror_del = sja1105_mirror_del, |
| }; |
| |
| static int sja1105_check_device_id(struct sja1105_private *priv) |
| { |
| const struct sja1105_regs *regs = priv->info->regs; |
| u8 prod_id[SJA1105_SIZE_DEVICE_ID] = {0}; |
| struct device *dev = &priv->spidev->dev; |
| u32 device_id; |
| u64 part_no; |
| int rc; |
| |
| rc = sja1105_xfer_u32(priv, SPI_READ, regs->device_id, &device_id, |
| NULL); |
| if (rc < 0) |
| return rc; |
| |
| if (device_id != priv->info->device_id) { |
| dev_err(dev, "Expected device ID 0x%llx but read 0x%x\n", |
| priv->info->device_id, device_id); |
| return -ENODEV; |
| } |
| |
| rc = sja1105_xfer_buf(priv, SPI_READ, regs->prod_id, prod_id, |
| SJA1105_SIZE_DEVICE_ID); |
| if (rc < 0) |
| return rc; |
| |
| sja1105_unpack(prod_id, &part_no, 19, 4, SJA1105_SIZE_DEVICE_ID); |
| |
| if (part_no != priv->info->part_no) { |
| dev_err(dev, "Expected part number 0x%llx but read 0x%llx\n", |
| priv->info->part_no, part_no); |
| return -ENODEV; |
| } |
| |
| return 0; |
| } |
| |
| static int sja1105_probe(struct spi_device *spi) |
| { |
| struct sja1105_tagger_data *tagger_data; |
| struct device *dev = &spi->dev; |
| struct sja1105_private *priv; |
| struct dsa_switch *ds; |
| int rc, i; |
| |
| if (!dev->of_node) { |
| dev_err(dev, "No DTS bindings for SJA1105 driver\n"); |
| return -EINVAL; |
| } |
| |
| priv = devm_kzalloc(dev, sizeof(struct sja1105_private), GFP_KERNEL); |
| if (!priv) |
| return -ENOMEM; |
| |
| /* Configure the optional reset pin and bring up switch */ |
| priv->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); |
| if (IS_ERR(priv->reset_gpio)) |
| dev_dbg(dev, "reset-gpios not defined, ignoring\n"); |
| else |
| sja1105_hw_reset(priv->reset_gpio, 1, 1); |
| |
| /* Populate our driver private structure (priv) based on |
| * the device tree node that was probed (spi) |
| */ |
| priv->spidev = spi; |
| spi_set_drvdata(spi, priv); |
| |
| /* Configure the SPI bus */ |
| spi->bits_per_word = 8; |
| rc = spi_setup(spi); |
| if (rc < 0) { |
| dev_err(dev, "Could not init SPI\n"); |
| return rc; |
| } |
| |
| priv->info = of_device_get_match_data(dev); |
| |
| /* Detect hardware device */ |
| rc = sja1105_check_device_id(priv); |
| if (rc < 0) { |
| dev_err(dev, "Device ID check failed: %d\n", rc); |
| return rc; |
| } |
| |
| dev_info(dev, "Probed switch chip: %s\n", priv->info->name); |
| |
| ds = devm_kzalloc(dev, sizeof(*ds), GFP_KERNEL); |
| if (!ds) |
| return -ENOMEM; |
| |
| ds->dev = dev; |
| ds->num_ports = SJA1105_NUM_PORTS; |
| ds->ops = &sja1105_switch_ops; |
| ds->priv = priv; |
| priv->ds = ds; |
| |
| tagger_data = &priv->tagger_data; |
| |
| mutex_init(&priv->ptp_data.lock); |
| mutex_init(&priv->mgmt_lock); |
| |
| sja1105_tas_setup(ds); |
| |
| rc = dsa_register_switch(priv->ds); |
| if (rc) |
| return rc; |
| |
| /* Connections between dsa_port and sja1105_port */ |
| for (i = 0; i < SJA1105_NUM_PORTS; i++) { |
| struct sja1105_port *sp = &priv->ports[i]; |
| |
| dsa_to_port(ds, i)->priv = sp; |
| sp->dp = dsa_to_port(ds, i); |
| sp->data = tagger_data; |
| } |
| |
| return 0; |
| } |
| |
| static int sja1105_remove(struct spi_device *spi) |
| { |
| struct sja1105_private *priv = spi_get_drvdata(spi); |
| |
| dsa_unregister_switch(priv->ds); |
| return 0; |
| } |
| |
| static const struct of_device_id sja1105_dt_ids[] = { |
| { .compatible = "nxp,sja1105e", .data = &sja1105e_info }, |
| { .compatible = "nxp,sja1105t", .data = &sja1105t_info }, |
| { .compatible = "nxp,sja1105p", .data = &sja1105p_info }, |
| { .compatible = "nxp,sja1105q", .data = &sja1105q_info }, |
| { .compatible = "nxp,sja1105r", .data = &sja1105r_info }, |
| { .compatible = "nxp,sja1105s", .data = &sja1105s_info }, |
| { /* sentinel */ }, |
| }; |
| MODULE_DEVICE_TABLE(of, sja1105_dt_ids); |
| |
| static struct spi_driver sja1105_driver = { |
| .driver = { |
| .name = "sja1105", |
| .owner = THIS_MODULE, |
| .of_match_table = of_match_ptr(sja1105_dt_ids), |
| }, |
| .probe = sja1105_probe, |
| .remove = sja1105_remove, |
| }; |
| |
| module_spi_driver(sja1105_driver); |
| |
| MODULE_AUTHOR("Vladimir Oltean <olteanv@gmail.com>"); |
| MODULE_AUTHOR("Georg Waibel <georg.waibel@sensor-technik.de>"); |
| MODULE_DESCRIPTION("SJA1105 Driver"); |
| MODULE_LICENSE("GPL v2"); |