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749 lines
18 KiB
749 lines
18 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* Copyright (C) 2020 NovaTech LLC |
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* George McCollister <[email protected]> |
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*/ |
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|
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#include <net/dsa.h> |
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#include <linux/if_bridge.h> |
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#include <linux/of_device.h> |
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#include <linux/netdev_features.h> |
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#include <linux/if_hsr.h> |
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#include "xrs700x.h" |
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#include "xrs700x_reg.h" |
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|
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#define XRS700X_MIB_INTERVAL msecs_to_jiffies(3000) |
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|
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#define XRS7000X_SUPPORTED_HSR_FEATURES \ |
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(NETIF_F_HW_HSR_TAG_INS | NETIF_F_HW_HSR_TAG_RM | \ |
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NETIF_F_HW_HSR_FWD | NETIF_F_HW_HSR_DUP) |
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#define XRS7003E_ID 0x100 |
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#define XRS7003F_ID 0x101 |
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#define XRS7004E_ID 0x200 |
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#define XRS7004F_ID 0x201 |
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const struct xrs700x_info xrs7003e_info = {XRS7003E_ID, "XRS7003E", 3}; |
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EXPORT_SYMBOL(xrs7003e_info); |
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const struct xrs700x_info xrs7003f_info = {XRS7003F_ID, "XRS7003F", 3}; |
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EXPORT_SYMBOL(xrs7003f_info); |
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const struct xrs700x_info xrs7004e_info = {XRS7004E_ID, "XRS7004E", 4}; |
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EXPORT_SYMBOL(xrs7004e_info); |
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const struct xrs700x_info xrs7004f_info = {XRS7004F_ID, "XRS7004F", 4}; |
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EXPORT_SYMBOL(xrs7004f_info); |
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struct xrs700x_regfield { |
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struct reg_field rf; |
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struct regmap_field **rmf; |
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}; |
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|
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struct xrs700x_mib { |
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unsigned int offset; |
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const char *name; |
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int stats64_offset; |
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}; |
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#define XRS700X_MIB_ETHTOOL_ONLY(o, n) {o, n, -1} |
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#define XRS700X_MIB(o, n, m) {o, n, offsetof(struct rtnl_link_stats64, m)} |
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|
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static const struct xrs700x_mib xrs700x_mibs[] = { |
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XRS700X_MIB(XRS_RX_GOOD_OCTETS_L, "rx_good_octets", rx_bytes), |
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XRS700X_MIB_ETHTOOL_ONLY(XRS_RX_BAD_OCTETS_L, "rx_bad_octets"), |
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XRS700X_MIB(XRS_RX_UNICAST_L, "rx_unicast", rx_packets), |
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XRS700X_MIB(XRS_RX_BROADCAST_L, "rx_broadcast", rx_packets), |
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XRS700X_MIB(XRS_RX_MULTICAST_L, "rx_multicast", multicast), |
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XRS700X_MIB(XRS_RX_UNDERSIZE_L, "rx_undersize", rx_length_errors), |
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XRS700X_MIB(XRS_RX_FRAGMENTS_L, "rx_fragments", rx_length_errors), |
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XRS700X_MIB(XRS_RX_OVERSIZE_L, "rx_oversize", rx_length_errors), |
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XRS700X_MIB(XRS_RX_JABBER_L, "rx_jabber", rx_length_errors), |
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XRS700X_MIB(XRS_RX_ERR_L, "rx_err", rx_errors), |
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XRS700X_MIB(XRS_RX_CRC_L, "rx_crc", rx_crc_errors), |
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XRS700X_MIB_ETHTOOL_ONLY(XRS_RX_64_L, "rx_64"), |
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XRS700X_MIB_ETHTOOL_ONLY(XRS_RX_65_127_L, "rx_65_127"), |
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XRS700X_MIB_ETHTOOL_ONLY(XRS_RX_128_255_L, "rx_128_255"), |
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XRS700X_MIB_ETHTOOL_ONLY(XRS_RX_256_511_L, "rx_256_511"), |
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XRS700X_MIB_ETHTOOL_ONLY(XRS_RX_512_1023_L, "rx_512_1023"), |
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XRS700X_MIB_ETHTOOL_ONLY(XRS_RX_1024_1536_L, "rx_1024_1536"), |
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XRS700X_MIB_ETHTOOL_ONLY(XRS_RX_HSR_PRP_L, "rx_hsr_prp"), |
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XRS700X_MIB_ETHTOOL_ONLY(XRS_RX_WRONGLAN_L, "rx_wronglan"), |
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XRS700X_MIB_ETHTOOL_ONLY(XRS_RX_DUPLICATE_L, "rx_duplicate"), |
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XRS700X_MIB(XRS_TX_OCTETS_L, "tx_octets", tx_bytes), |
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XRS700X_MIB(XRS_TX_UNICAST_L, "tx_unicast", tx_packets), |
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XRS700X_MIB(XRS_TX_BROADCAST_L, "tx_broadcast", tx_packets), |
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XRS700X_MIB(XRS_TX_MULTICAST_L, "tx_multicast", tx_packets), |
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XRS700X_MIB_ETHTOOL_ONLY(XRS_TX_HSR_PRP_L, "tx_hsr_prp"), |
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XRS700X_MIB(XRS_PRIQ_DROP_L, "priq_drop", tx_dropped), |
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XRS700X_MIB(XRS_EARLY_DROP_L, "early_drop", tx_dropped), |
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}; |
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|
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static void xrs700x_get_strings(struct dsa_switch *ds, int port, |
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u32 stringset, u8 *data) |
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{ |
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int i; |
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|
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if (stringset != ETH_SS_STATS) |
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return; |
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|
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for (i = 0; i < ARRAY_SIZE(xrs700x_mibs); i++) { |
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strscpy(data, xrs700x_mibs[i].name, ETH_GSTRING_LEN); |
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data += ETH_GSTRING_LEN; |
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} |
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} |
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static int xrs700x_get_sset_count(struct dsa_switch *ds, int port, int sset) |
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{ |
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if (sset != ETH_SS_STATS) |
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return -EOPNOTSUPP; |
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|
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return ARRAY_SIZE(xrs700x_mibs); |
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} |
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static void xrs700x_read_port_counters(struct xrs700x *priv, int port) |
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{ |
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struct xrs700x_port *p = &priv->ports[port]; |
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struct rtnl_link_stats64 stats; |
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int i; |
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|
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memset(&stats, 0, sizeof(stats)); |
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|
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mutex_lock(&p->mib_mutex); |
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|
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/* Capture counter values */ |
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regmap_write(priv->regmap, XRS_CNT_CTRL(port), 1); |
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for (i = 0; i < ARRAY_SIZE(xrs700x_mibs); i++) { |
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unsigned int high = 0, low = 0, reg; |
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|
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reg = xrs700x_mibs[i].offset + XRS_PORT_OFFSET * port; |
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regmap_read(priv->regmap, reg, &low); |
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regmap_read(priv->regmap, reg + 2, &high); |
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p->mib_data[i] += (high << 16) | low; |
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if (xrs700x_mibs[i].stats64_offset >= 0) { |
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u8 *s = (u8 *)&stats + xrs700x_mibs[i].stats64_offset; |
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*(u64 *)s += p->mib_data[i]; |
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} |
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} |
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/* multicast must be added to rx_packets (which already includes |
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* unicast and broadcast) |
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*/ |
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stats.rx_packets += stats.multicast; |
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u64_stats_update_begin(&p->syncp); |
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p->stats64 = stats; |
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u64_stats_update_end(&p->syncp); |
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mutex_unlock(&p->mib_mutex); |
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} |
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|
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static void xrs700x_mib_work(struct work_struct *work) |
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{ |
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struct xrs700x *priv = container_of(work, struct xrs700x, |
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mib_work.work); |
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int i; |
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for (i = 0; i < priv->ds->num_ports; i++) |
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xrs700x_read_port_counters(priv, i); |
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schedule_delayed_work(&priv->mib_work, XRS700X_MIB_INTERVAL); |
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} |
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static void xrs700x_get_ethtool_stats(struct dsa_switch *ds, int port, |
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u64 *data) |
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{ |
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struct xrs700x *priv = ds->priv; |
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struct xrs700x_port *p = &priv->ports[port]; |
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xrs700x_read_port_counters(priv, port); |
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mutex_lock(&p->mib_mutex); |
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memcpy(data, p->mib_data, sizeof(*data) * ARRAY_SIZE(xrs700x_mibs)); |
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mutex_unlock(&p->mib_mutex); |
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} |
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static void xrs700x_get_stats64(struct dsa_switch *ds, int port, |
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struct rtnl_link_stats64 *s) |
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{ |
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struct xrs700x *priv = ds->priv; |
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struct xrs700x_port *p = &priv->ports[port]; |
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unsigned int start; |
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do { |
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start = u64_stats_fetch_begin(&p->syncp); |
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*s = p->stats64; |
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} while (u64_stats_fetch_retry(&p->syncp, start)); |
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} |
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|
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static int xrs700x_setup_regmap_range(struct xrs700x *priv) |
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{ |
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struct xrs700x_regfield regfields[] = { |
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{ |
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.rf = REG_FIELD_ID(XRS_PORT_STATE(0), 0, 1, |
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priv->ds->num_ports, |
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XRS_PORT_OFFSET), |
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.rmf = &priv->ps_forward |
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}, |
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{ |
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.rf = REG_FIELD_ID(XRS_PORT_STATE(0), 2, 3, |
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priv->ds->num_ports, |
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XRS_PORT_OFFSET), |
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.rmf = &priv->ps_management |
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}, |
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{ |
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.rf = REG_FIELD_ID(XRS_PORT_STATE(0), 4, 9, |
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priv->ds->num_ports, |
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XRS_PORT_OFFSET), |
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.rmf = &priv->ps_sel_speed |
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}, |
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{ |
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.rf = REG_FIELD_ID(XRS_PORT_STATE(0), 10, 11, |
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priv->ds->num_ports, |
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XRS_PORT_OFFSET), |
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.rmf = &priv->ps_cur_speed |
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} |
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}; |
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int i = 0; |
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for (; i < ARRAY_SIZE(regfields); i++) { |
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*regfields[i].rmf = devm_regmap_field_alloc(priv->dev, |
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priv->regmap, |
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regfields[i].rf); |
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if (IS_ERR(*regfields[i].rmf)) |
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return PTR_ERR(*regfields[i].rmf); |
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} |
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return 0; |
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} |
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static enum dsa_tag_protocol xrs700x_get_tag_protocol(struct dsa_switch *ds, |
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int port, |
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enum dsa_tag_protocol m) |
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{ |
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return DSA_TAG_PROTO_XRS700X; |
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} |
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static int xrs700x_reset(struct dsa_switch *ds) |
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{ |
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struct xrs700x *priv = ds->priv; |
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unsigned int val; |
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int ret; |
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ret = regmap_write(priv->regmap, XRS_GENERAL, XRS_GENERAL_RESET); |
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if (ret) |
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goto error; |
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ret = regmap_read_poll_timeout(priv->regmap, XRS_GENERAL, |
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val, !(val & XRS_GENERAL_RESET), |
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10, 1000); |
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error: |
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if (ret) { |
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dev_err_ratelimited(priv->dev, "error resetting switch: %d\n", |
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ret); |
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} |
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return ret; |
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} |
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static void xrs700x_port_stp_state_set(struct dsa_switch *ds, int port, |
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u8 state) |
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{ |
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struct xrs700x *priv = ds->priv; |
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unsigned int bpdus = 1; |
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unsigned int val; |
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switch (state) { |
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case BR_STATE_DISABLED: |
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bpdus = 0; |
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fallthrough; |
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case BR_STATE_BLOCKING: |
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case BR_STATE_LISTENING: |
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val = XRS_PORT_DISABLED; |
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break; |
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case BR_STATE_LEARNING: |
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val = XRS_PORT_LEARNING; |
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break; |
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case BR_STATE_FORWARDING: |
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val = XRS_PORT_FORWARDING; |
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break; |
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default: |
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dev_err(ds->dev, "invalid STP state: %d\n", state); |
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return; |
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} |
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regmap_fields_write(priv->ps_forward, port, val); |
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|
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/* Enable/disable inbound policy added by xrs700x_port_add_bpdu_ipf() |
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* which allows BPDU forwarding to the CPU port when the front facing |
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* port is in disabled/learning state. |
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*/ |
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regmap_update_bits(priv->regmap, XRS_ETH_ADDR_CFG(port, 0), 1, bpdus); |
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dev_dbg_ratelimited(priv->dev, "%s - port: %d, state: %u, val: 0x%x\n", |
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__func__, port, state, val); |
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} |
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|
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/* Add an inbound policy filter which matches the BPDU destination MAC |
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* and forwards to the CPU port. Leave the policy disabled, it will be |
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* enabled as needed. |
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*/ |
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static int xrs700x_port_add_bpdu_ipf(struct dsa_switch *ds, int port) |
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{ |
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struct xrs700x *priv = ds->priv; |
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unsigned int val = 0; |
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int i = 0; |
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int ret; |
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|
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/* Compare all 48 bits of the destination MAC address. */ |
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ret = regmap_write(priv->regmap, XRS_ETH_ADDR_CFG(port, 0), 48 << 2); |
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if (ret) |
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return ret; |
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|
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/* match BPDU destination 01:80:c2:00:00:00 */ |
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for (i = 0; i < sizeof(eth_stp_addr); i += 2) { |
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ret = regmap_write(priv->regmap, XRS_ETH_ADDR_0(port, 0) + i, |
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eth_stp_addr[i] | |
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(eth_stp_addr[i + 1] << 8)); |
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if (ret) |
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return ret; |
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} |
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|
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/* Mirror BPDU to CPU port */ |
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for (i = 0; i < ds->num_ports; i++) { |
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if (dsa_is_cpu_port(ds, i)) |
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val |= BIT(i); |
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} |
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ret = regmap_write(priv->regmap, XRS_ETH_ADDR_FWD_MIRROR(port, 0), val); |
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if (ret) |
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return ret; |
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ret = regmap_write(priv->regmap, XRS_ETH_ADDR_FWD_ALLOW(port, 0), 0); |
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if (ret) |
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return ret; |
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|
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return 0; |
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} |
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static int xrs700x_port_setup(struct dsa_switch *ds, int port) |
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{ |
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bool cpu_port = dsa_is_cpu_port(ds, port); |
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struct xrs700x *priv = ds->priv; |
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unsigned int val = 0; |
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int ret, i; |
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xrs700x_port_stp_state_set(ds, port, BR_STATE_DISABLED); |
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|
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/* Disable forwarding to non-CPU ports */ |
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for (i = 0; i < ds->num_ports; i++) { |
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if (!dsa_is_cpu_port(ds, i)) |
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val |= BIT(i); |
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} |
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/* 1 = Disable forwarding to the port */ |
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ret = regmap_write(priv->regmap, XRS_PORT_FWD_MASK(port), val); |
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if (ret) |
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return ret; |
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val = cpu_port ? XRS_PORT_MODE_MANAGEMENT : XRS_PORT_MODE_NORMAL; |
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ret = regmap_fields_write(priv->ps_management, port, val); |
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if (ret) |
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return ret; |
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|
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if (!cpu_port) { |
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ret = xrs700x_port_add_bpdu_ipf(ds, port); |
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if (ret) |
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return ret; |
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} |
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|
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return 0; |
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} |
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static int xrs700x_setup(struct dsa_switch *ds) |
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{ |
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struct xrs700x *priv = ds->priv; |
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int ret, i; |
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ret = xrs700x_reset(ds); |
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if (ret) |
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return ret; |
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for (i = 0; i < ds->num_ports; i++) { |
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ret = xrs700x_port_setup(ds, i); |
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if (ret) |
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return ret; |
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} |
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|
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schedule_delayed_work(&priv->mib_work, XRS700X_MIB_INTERVAL); |
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|
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return 0; |
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} |
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static void xrs700x_teardown(struct dsa_switch *ds) |
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{ |
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struct xrs700x *priv = ds->priv; |
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|
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cancel_delayed_work_sync(&priv->mib_work); |
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} |
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|
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static void xrs700x_phylink_validate(struct dsa_switch *ds, int port, |
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unsigned long *supported, |
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struct phylink_link_state *state) |
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{ |
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__ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, }; |
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|
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switch (port) { |
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case 0: |
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break; |
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case 1: |
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case 2: |
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case 3: |
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phylink_set(mask, 1000baseT_Full); |
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break; |
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default: |
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bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS); |
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dev_err(ds->dev, "Unsupported port: %i\n", port); |
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return; |
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} |
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|
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phylink_set_port_modes(mask); |
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|
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/* The switch only supports full duplex. */ |
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phylink_set(mask, 10baseT_Full); |
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phylink_set(mask, 100baseT_Full); |
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|
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bitmap_and(supported, supported, mask, |
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__ETHTOOL_LINK_MODE_MASK_NBITS); |
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bitmap_and(state->advertising, state->advertising, mask, |
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__ETHTOOL_LINK_MODE_MASK_NBITS); |
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} |
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|
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static void xrs700x_mac_link_up(struct dsa_switch *ds, int port, |
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unsigned int mode, phy_interface_t interface, |
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struct phy_device *phydev, |
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int speed, int duplex, |
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bool tx_pause, bool rx_pause) |
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{ |
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struct xrs700x *priv = ds->priv; |
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unsigned int val; |
|
|
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switch (speed) { |
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case SPEED_1000: |
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val = XRS_PORT_SPEED_1000; |
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break; |
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case SPEED_100: |
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val = XRS_PORT_SPEED_100; |
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break; |
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case SPEED_10: |
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val = XRS_PORT_SPEED_10; |
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break; |
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default: |
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return; |
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} |
|
|
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regmap_fields_write(priv->ps_sel_speed, port, val); |
|
|
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dev_dbg_ratelimited(priv->dev, "%s: port: %d mode: %u speed: %u\n", |
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__func__, port, mode, speed); |
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} |
|
|
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static int xrs700x_bridge_common(struct dsa_switch *ds, int port, |
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struct net_device *bridge, bool join) |
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{ |
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unsigned int i, cpu_mask = 0, mask = 0; |
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struct xrs700x *priv = ds->priv; |
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int ret; |
|
|
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for (i = 0; i < ds->num_ports; i++) { |
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if (dsa_is_cpu_port(ds, i)) |
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continue; |
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|
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cpu_mask |= BIT(i); |
|
|
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if (dsa_to_port(ds, i)->bridge_dev == bridge) |
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continue; |
|
|
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mask |= BIT(i); |
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} |
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|
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for (i = 0; i < ds->num_ports; i++) { |
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if (dsa_to_port(ds, i)->bridge_dev != bridge) |
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continue; |
|
|
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/* 1 = Disable forwarding to the port */ |
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ret = regmap_write(priv->regmap, XRS_PORT_FWD_MASK(i), mask); |
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if (ret) |
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return ret; |
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} |
|
|
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if (!join) { |
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ret = regmap_write(priv->regmap, XRS_PORT_FWD_MASK(port), |
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cpu_mask); |
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if (ret) |
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return ret; |
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} |
|
|
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return 0; |
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} |
|
|
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static int xrs700x_bridge_join(struct dsa_switch *ds, int port, |
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struct net_device *bridge) |
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{ |
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return xrs700x_bridge_common(ds, port, bridge, true); |
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} |
|
|
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static void xrs700x_bridge_leave(struct dsa_switch *ds, int port, |
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struct net_device *bridge) |
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{ |
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xrs700x_bridge_common(ds, port, bridge, false); |
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} |
|
|
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static int xrs700x_hsr_join(struct dsa_switch *ds, int port, |
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struct net_device *hsr) |
|
{ |
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unsigned int val = XRS_HSR_CFG_HSR_PRP; |
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struct dsa_port *partner = NULL, *dp; |
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struct xrs700x *priv = ds->priv; |
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struct net_device *slave; |
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int ret, i, hsr_pair[2]; |
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enum hsr_version ver; |
|
|
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ret = hsr_get_version(hsr, &ver); |
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if (ret) |
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return ret; |
|
|
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/* Only ports 1 and 2 can be HSR/PRP redundant ports. */ |
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if (port != 1 && port != 2) |
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return -EOPNOTSUPP; |
|
|
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if (ver == HSR_V1) |
|
val |= XRS_HSR_CFG_HSR; |
|
else if (ver == PRP_V1) |
|
val |= XRS_HSR_CFG_PRP; |
|
else |
|
return -EOPNOTSUPP; |
|
|
|
dsa_hsr_foreach_port(dp, ds, hsr) { |
|
if (dp->index != port) { |
|
partner = dp; |
|
break; |
|
} |
|
} |
|
|
|
/* We can't enable redundancy on the switch until both |
|
* redundant ports have signed up. |
|
*/ |
|
if (!partner) |
|
return 0; |
|
|
|
regmap_fields_write(priv->ps_forward, partner->index, |
|
XRS_PORT_DISABLED); |
|
regmap_fields_write(priv->ps_forward, port, XRS_PORT_DISABLED); |
|
|
|
regmap_write(priv->regmap, XRS_HSR_CFG(partner->index), |
|
val | XRS_HSR_CFG_LANID_A); |
|
regmap_write(priv->regmap, XRS_HSR_CFG(port), |
|
val | XRS_HSR_CFG_LANID_B); |
|
|
|
/* Clear bits for both redundant ports (HSR only) and the CPU port to |
|
* enable forwarding. |
|
*/ |
|
val = GENMASK(ds->num_ports - 1, 0); |
|
if (ver == HSR_V1) { |
|
val &= ~BIT(partner->index); |
|
val &= ~BIT(port); |
|
} |
|
val &= ~BIT(dsa_upstream_port(ds, port)); |
|
regmap_write(priv->regmap, XRS_PORT_FWD_MASK(partner->index), val); |
|
regmap_write(priv->regmap, XRS_PORT_FWD_MASK(port), val); |
|
|
|
regmap_fields_write(priv->ps_forward, partner->index, |
|
XRS_PORT_FORWARDING); |
|
regmap_fields_write(priv->ps_forward, port, XRS_PORT_FORWARDING); |
|
|
|
hsr_pair[0] = port; |
|
hsr_pair[1] = partner->index; |
|
for (i = 0; i < ARRAY_SIZE(hsr_pair); i++) { |
|
slave = dsa_to_port(ds, hsr_pair[i])->slave; |
|
slave->features |= XRS7000X_SUPPORTED_HSR_FEATURES; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int xrs700x_hsr_leave(struct dsa_switch *ds, int port, |
|
struct net_device *hsr) |
|
{ |
|
struct dsa_port *partner = NULL, *dp; |
|
struct xrs700x *priv = ds->priv; |
|
struct net_device *slave; |
|
int i, hsr_pair[2]; |
|
unsigned int val; |
|
|
|
dsa_hsr_foreach_port(dp, ds, hsr) { |
|
if (dp->index != port) { |
|
partner = dp; |
|
break; |
|
} |
|
} |
|
|
|
if (!partner) |
|
return 0; |
|
|
|
regmap_fields_write(priv->ps_forward, partner->index, |
|
XRS_PORT_DISABLED); |
|
regmap_fields_write(priv->ps_forward, port, XRS_PORT_DISABLED); |
|
|
|
regmap_write(priv->regmap, XRS_HSR_CFG(partner->index), 0); |
|
regmap_write(priv->regmap, XRS_HSR_CFG(port), 0); |
|
|
|
/* Clear bit for the CPU port to enable forwarding. */ |
|
val = GENMASK(ds->num_ports - 1, 0); |
|
val &= ~BIT(dsa_upstream_port(ds, port)); |
|
regmap_write(priv->regmap, XRS_PORT_FWD_MASK(partner->index), val); |
|
regmap_write(priv->regmap, XRS_PORT_FWD_MASK(port), val); |
|
|
|
regmap_fields_write(priv->ps_forward, partner->index, |
|
XRS_PORT_FORWARDING); |
|
regmap_fields_write(priv->ps_forward, port, XRS_PORT_FORWARDING); |
|
|
|
hsr_pair[0] = port; |
|
hsr_pair[1] = partner->index; |
|
for (i = 0; i < ARRAY_SIZE(hsr_pair); i++) { |
|
slave = dsa_to_port(ds, hsr_pair[i])->slave; |
|
slave->features &= ~XRS7000X_SUPPORTED_HSR_FEATURES; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static const struct dsa_switch_ops xrs700x_ops = { |
|
.get_tag_protocol = xrs700x_get_tag_protocol, |
|
.setup = xrs700x_setup, |
|
.teardown = xrs700x_teardown, |
|
.port_stp_state_set = xrs700x_port_stp_state_set, |
|
.phylink_validate = xrs700x_phylink_validate, |
|
.phylink_mac_link_up = xrs700x_mac_link_up, |
|
.get_strings = xrs700x_get_strings, |
|
.get_sset_count = xrs700x_get_sset_count, |
|
.get_ethtool_stats = xrs700x_get_ethtool_stats, |
|
.get_stats64 = xrs700x_get_stats64, |
|
.port_bridge_join = xrs700x_bridge_join, |
|
.port_bridge_leave = xrs700x_bridge_leave, |
|
.port_hsr_join = xrs700x_hsr_join, |
|
.port_hsr_leave = xrs700x_hsr_leave, |
|
}; |
|
|
|
static int xrs700x_detect(struct xrs700x *priv) |
|
{ |
|
const struct xrs700x_info *info; |
|
unsigned int id; |
|
int ret; |
|
|
|
ret = regmap_read(priv->regmap, XRS_DEV_ID0, &id); |
|
if (ret) { |
|
dev_err(priv->dev, "error %d while reading switch id.\n", |
|
ret); |
|
return ret; |
|
} |
|
|
|
info = of_device_get_match_data(priv->dev); |
|
if (!info) |
|
return -EINVAL; |
|
|
|
if (info->id == id) { |
|
priv->ds->num_ports = info->num_ports; |
|
dev_info(priv->dev, "%s detected.\n", info->name); |
|
return 0; |
|
} |
|
|
|
dev_err(priv->dev, "expected switch id 0x%x but found 0x%x.\n", |
|
info->id, id); |
|
|
|
return -ENODEV; |
|
} |
|
|
|
struct xrs700x *xrs700x_switch_alloc(struct device *base, void *devpriv) |
|
{ |
|
struct dsa_switch *ds; |
|
struct xrs700x *priv; |
|
|
|
ds = devm_kzalloc(base, sizeof(*ds), GFP_KERNEL); |
|
if (!ds) |
|
return NULL; |
|
|
|
ds->dev = base; |
|
|
|
priv = devm_kzalloc(base, sizeof(*priv), GFP_KERNEL); |
|
if (!priv) |
|
return NULL; |
|
|
|
INIT_DELAYED_WORK(&priv->mib_work, xrs700x_mib_work); |
|
|
|
ds->ops = &xrs700x_ops; |
|
ds->priv = priv; |
|
priv->dev = base; |
|
|
|
priv->ds = ds; |
|
priv->priv = devpriv; |
|
|
|
return priv; |
|
} |
|
EXPORT_SYMBOL(xrs700x_switch_alloc); |
|
|
|
static int xrs700x_alloc_port_mib(struct xrs700x *priv, int port) |
|
{ |
|
struct xrs700x_port *p = &priv->ports[port]; |
|
|
|
p->mib_data = devm_kcalloc(priv->dev, ARRAY_SIZE(xrs700x_mibs), |
|
sizeof(*p->mib_data), GFP_KERNEL); |
|
if (!p->mib_data) |
|
return -ENOMEM; |
|
|
|
mutex_init(&p->mib_mutex); |
|
u64_stats_init(&p->syncp); |
|
|
|
return 0; |
|
} |
|
|
|
int xrs700x_switch_register(struct xrs700x *priv) |
|
{ |
|
int ret; |
|
int i; |
|
|
|
ret = xrs700x_detect(priv); |
|
if (ret) |
|
return ret; |
|
|
|
ret = xrs700x_setup_regmap_range(priv); |
|
if (ret) |
|
return ret; |
|
|
|
priv->ports = devm_kcalloc(priv->dev, priv->ds->num_ports, |
|
sizeof(*priv->ports), GFP_KERNEL); |
|
if (!priv->ports) |
|
return -ENOMEM; |
|
|
|
for (i = 0; i < priv->ds->num_ports; i++) { |
|
ret = xrs700x_alloc_port_mib(priv, i); |
|
if (ret) |
|
return ret; |
|
} |
|
|
|
return dsa_register_switch(priv->ds); |
|
} |
|
EXPORT_SYMBOL(xrs700x_switch_register); |
|
|
|
void xrs700x_switch_remove(struct xrs700x *priv) |
|
{ |
|
dsa_unregister_switch(priv->ds); |
|
} |
|
EXPORT_SYMBOL(xrs700x_switch_remove); |
|
|
|
MODULE_AUTHOR("George McCollister <[email protected]>"); |
|
MODULE_DESCRIPTION("Arrow SpeedChips XRS700x DSA driver"); |
|
MODULE_LICENSE("GPL v2");
|
|
|