575 lines
15 KiB
C
575 lines
15 KiB
C
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// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
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/* Copyright 2019 NXP */
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#include <linux/acpi.h>
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#include <linux/pcs-lynx.h>
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#include <linux/phy/phy.h>
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#include <linux/property.h>
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#include "dpaa2-eth.h"
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#include "dpaa2-mac.h"
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#define phylink_to_dpaa2_mac(config) \
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container_of((config), struct dpaa2_mac, phylink_config)
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#define DPMAC_PROTOCOL_CHANGE_VER_MAJOR 4
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#define DPMAC_PROTOCOL_CHANGE_VER_MINOR 8
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#define DPAA2_MAC_FEATURE_PROTOCOL_CHANGE BIT(0)
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static int dpaa2_mac_cmp_ver(struct dpaa2_mac *mac,
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u16 ver_major, u16 ver_minor)
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{
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if (mac->ver_major == ver_major)
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return mac->ver_minor - ver_minor;
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return mac->ver_major - ver_major;
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}
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static void dpaa2_mac_detect_features(struct dpaa2_mac *mac)
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{
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mac->features = 0;
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if (dpaa2_mac_cmp_ver(mac, DPMAC_PROTOCOL_CHANGE_VER_MAJOR,
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DPMAC_PROTOCOL_CHANGE_VER_MINOR) >= 0)
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mac->features |= DPAA2_MAC_FEATURE_PROTOCOL_CHANGE;
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}
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static int phy_mode(enum dpmac_eth_if eth_if, phy_interface_t *if_mode)
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{
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*if_mode = PHY_INTERFACE_MODE_NA;
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switch (eth_if) {
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case DPMAC_ETH_IF_RGMII:
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*if_mode = PHY_INTERFACE_MODE_RGMII;
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break;
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case DPMAC_ETH_IF_USXGMII:
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*if_mode = PHY_INTERFACE_MODE_USXGMII;
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break;
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case DPMAC_ETH_IF_QSGMII:
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*if_mode = PHY_INTERFACE_MODE_QSGMII;
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break;
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case DPMAC_ETH_IF_SGMII:
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*if_mode = PHY_INTERFACE_MODE_SGMII;
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break;
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case DPMAC_ETH_IF_XFI:
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*if_mode = PHY_INTERFACE_MODE_10GBASER;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static enum dpmac_eth_if dpmac_eth_if_mode(phy_interface_t if_mode)
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{
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switch (if_mode) {
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case PHY_INTERFACE_MODE_RGMII:
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case PHY_INTERFACE_MODE_RGMII_ID:
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case PHY_INTERFACE_MODE_RGMII_RXID:
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case PHY_INTERFACE_MODE_RGMII_TXID:
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return DPMAC_ETH_IF_RGMII;
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case PHY_INTERFACE_MODE_USXGMII:
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return DPMAC_ETH_IF_USXGMII;
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case PHY_INTERFACE_MODE_QSGMII:
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return DPMAC_ETH_IF_QSGMII;
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case PHY_INTERFACE_MODE_SGMII:
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return DPMAC_ETH_IF_SGMII;
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case PHY_INTERFACE_MODE_10GBASER:
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return DPMAC_ETH_IF_XFI;
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case PHY_INTERFACE_MODE_1000BASEX:
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return DPMAC_ETH_IF_1000BASEX;
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default:
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return DPMAC_ETH_IF_MII;
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}
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}
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static struct fwnode_handle *dpaa2_mac_get_node(struct device *dev,
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u16 dpmac_id)
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{
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struct fwnode_handle *fwnode, *parent = NULL, *child = NULL;
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struct device_node *dpmacs = NULL;
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int err;
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u32 id;
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fwnode = dev_fwnode(dev->parent);
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if (is_of_node(fwnode)) {
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dpmacs = of_find_node_by_name(NULL, "dpmacs");
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if (!dpmacs)
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return NULL;
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parent = of_fwnode_handle(dpmacs);
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} else if (is_acpi_node(fwnode)) {
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parent = fwnode;
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} else {
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/* The root dprc device didn't yet get to finalize it's probe,
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* thus the fwnode field is not yet set. Defer probe if we are
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* facing this situation.
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*/
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return ERR_PTR(-EPROBE_DEFER);
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}
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fwnode_for_each_child_node(parent, child) {
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err = -EINVAL;
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if (is_acpi_device_node(child))
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err = acpi_get_local_address(ACPI_HANDLE_FWNODE(child), &id);
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else if (is_of_node(child))
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err = of_property_read_u32(to_of_node(child), "reg", &id);
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if (err)
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continue;
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if (id == dpmac_id) {
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of_node_put(dpmacs);
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return child;
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}
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}
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of_node_put(dpmacs);
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return NULL;
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}
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static int dpaa2_mac_get_if_mode(struct fwnode_handle *dpmac_node,
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struct dpmac_attr attr)
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{
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phy_interface_t if_mode;
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int err;
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err = fwnode_get_phy_mode(dpmac_node);
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if (err > 0)
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return err;
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err = phy_mode(attr.eth_if, &if_mode);
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if (!err)
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return if_mode;
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return err;
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}
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static struct phylink_pcs *dpaa2_mac_select_pcs(struct phylink_config *config,
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phy_interface_t interface)
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{
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struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
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return mac->pcs;
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}
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static void dpaa2_mac_config(struct phylink_config *config, unsigned int mode,
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const struct phylink_link_state *state)
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{
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struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
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struct dpmac_link_state *dpmac_state = &mac->state;
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int err;
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if (state->an_enabled)
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dpmac_state->options |= DPMAC_LINK_OPT_AUTONEG;
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else
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dpmac_state->options &= ~DPMAC_LINK_OPT_AUTONEG;
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err = dpmac_set_link_state(mac->mc_io, 0,
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mac->mc_dev->mc_handle, dpmac_state);
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if (err)
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netdev_err(mac->net_dev, "%s: dpmac_set_link_state() = %d\n",
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__func__, err);
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if (!mac->serdes_phy)
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return;
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/* This happens only if we support changing of protocol at runtime */
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err = dpmac_set_protocol(mac->mc_io, 0, mac->mc_dev->mc_handle,
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dpmac_eth_if_mode(state->interface));
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if (err)
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netdev_err(mac->net_dev, "dpmac_set_protocol() = %d\n", err);
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err = phy_set_mode_ext(mac->serdes_phy, PHY_MODE_ETHERNET, state->interface);
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if (err)
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netdev_err(mac->net_dev, "phy_set_mode_ext() = %d\n", err);
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}
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static void dpaa2_mac_link_up(struct phylink_config *config,
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struct phy_device *phy,
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unsigned int mode, phy_interface_t interface,
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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 dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
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struct dpmac_link_state *dpmac_state = &mac->state;
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int err;
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dpmac_state->up = 1;
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dpmac_state->rate = speed;
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if (duplex == DUPLEX_HALF)
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dpmac_state->options |= DPMAC_LINK_OPT_HALF_DUPLEX;
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else if (duplex == DUPLEX_FULL)
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dpmac_state->options &= ~DPMAC_LINK_OPT_HALF_DUPLEX;
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if (rx_pause)
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dpmac_state->options |= DPMAC_LINK_OPT_PAUSE;
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else
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dpmac_state->options &= ~DPMAC_LINK_OPT_PAUSE;
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if (rx_pause ^ tx_pause)
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dpmac_state->options |= DPMAC_LINK_OPT_ASYM_PAUSE;
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else
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dpmac_state->options &= ~DPMAC_LINK_OPT_ASYM_PAUSE;
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err = dpmac_set_link_state(mac->mc_io, 0,
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mac->mc_dev->mc_handle, dpmac_state);
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if (err)
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netdev_err(mac->net_dev, "%s: dpmac_set_link_state() = %d\n",
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__func__, err);
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}
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static void dpaa2_mac_link_down(struct phylink_config *config,
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unsigned int mode,
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phy_interface_t interface)
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{
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struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
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struct dpmac_link_state *dpmac_state = &mac->state;
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int err;
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dpmac_state->up = 0;
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err = dpmac_set_link_state(mac->mc_io, 0,
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mac->mc_dev->mc_handle, dpmac_state);
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if (err)
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netdev_err(mac->net_dev, "dpmac_set_link_state() = %d\n", err);
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}
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static const struct phylink_mac_ops dpaa2_mac_phylink_ops = {
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.validate = phylink_generic_validate,
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.mac_select_pcs = dpaa2_mac_select_pcs,
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.mac_config = dpaa2_mac_config,
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.mac_link_up = dpaa2_mac_link_up,
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.mac_link_down = dpaa2_mac_link_down,
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};
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static int dpaa2_pcs_create(struct dpaa2_mac *mac,
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struct fwnode_handle *dpmac_node,
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int id)
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{
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struct mdio_device *mdiodev;
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struct fwnode_handle *node;
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node = fwnode_find_reference(dpmac_node, "pcs-handle", 0);
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if (IS_ERR(node)) {
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/* do not error out on old DTS files */
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netdev_warn(mac->net_dev, "pcs-handle node not found\n");
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return 0;
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}
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if (!fwnode_device_is_available(node)) {
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netdev_err(mac->net_dev, "pcs-handle node not available\n");
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fwnode_handle_put(node);
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return -ENODEV;
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}
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mdiodev = fwnode_mdio_find_device(node);
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fwnode_handle_put(node);
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if (!mdiodev)
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return -EPROBE_DEFER;
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mac->pcs = lynx_pcs_create(mdiodev);
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if (!mac->pcs) {
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netdev_err(mac->net_dev, "lynx_pcs_create() failed\n");
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put_device(&mdiodev->dev);
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return -ENOMEM;
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}
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return 0;
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}
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static void dpaa2_pcs_destroy(struct dpaa2_mac *mac)
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{
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struct phylink_pcs *phylink_pcs = mac->pcs;
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if (phylink_pcs) {
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struct mdio_device *mdio = lynx_get_mdio_device(phylink_pcs);
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struct device *dev = &mdio->dev;
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lynx_pcs_destroy(phylink_pcs);
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put_device(dev);
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mac->pcs = NULL;
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}
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}
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static void dpaa2_mac_set_supported_interfaces(struct dpaa2_mac *mac)
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{
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int intf, err;
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/* We support the current interface mode, and if we have a PCS
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* similar interface modes that do not require the SerDes lane to be
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* reconfigured.
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*/
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__set_bit(mac->if_mode, mac->phylink_config.supported_interfaces);
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if (mac->pcs) {
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switch (mac->if_mode) {
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case PHY_INTERFACE_MODE_1000BASEX:
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case PHY_INTERFACE_MODE_SGMII:
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__set_bit(PHY_INTERFACE_MODE_1000BASEX,
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mac->phylink_config.supported_interfaces);
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__set_bit(PHY_INTERFACE_MODE_SGMII,
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mac->phylink_config.supported_interfaces);
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break;
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default:
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break;
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}
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}
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if (!mac->serdes_phy)
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return;
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/* In case we have access to the SerDes phy/lane, then ask the SerDes
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* driver what interfaces are supported based on the current PLL
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* configuration.
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*/
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for (intf = 0; intf < PHY_INTERFACE_MODE_MAX; intf++) {
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if (intf == PHY_INTERFACE_MODE_NA)
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continue;
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err = phy_validate(mac->serdes_phy, PHY_MODE_ETHERNET, intf, NULL);
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if (err)
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continue;
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__set_bit(intf, mac->phylink_config.supported_interfaces);
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}
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}
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void dpaa2_mac_start(struct dpaa2_mac *mac)
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{
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if (mac->serdes_phy)
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phy_power_on(mac->serdes_phy);
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}
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void dpaa2_mac_stop(struct dpaa2_mac *mac)
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{
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if (mac->serdes_phy)
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phy_power_off(mac->serdes_phy);
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}
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int dpaa2_mac_connect(struct dpaa2_mac *mac)
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{
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struct net_device *net_dev = mac->net_dev;
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struct fwnode_handle *dpmac_node;
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struct phy *serdes_phy = NULL;
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struct phylink *phylink;
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int err;
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mac->if_link_type = mac->attr.link_type;
|
||
|
|
|
||
|
|
dpmac_node = mac->fw_node;
|
||
|
|
if (!dpmac_node) {
|
||
|
|
netdev_err(net_dev, "No dpmac@%d node found.\n", mac->attr.id);
|
||
|
|
return -ENODEV;
|
||
|
|
}
|
||
|
|
|
||
|
|
err = dpaa2_mac_get_if_mode(dpmac_node, mac->attr);
|
||
|
|
if (err < 0)
|
||
|
|
return -EINVAL;
|
||
|
|
mac->if_mode = err;
|
||
|
|
|
||
|
|
if (mac->features & DPAA2_MAC_FEATURE_PROTOCOL_CHANGE &&
|
||
|
|
!phy_interface_mode_is_rgmii(mac->if_mode) &&
|
||
|
|
is_of_node(dpmac_node)) {
|
||
|
|
serdes_phy = of_phy_get(to_of_node(dpmac_node), NULL);
|
||
|
|
|
||
|
|
if (serdes_phy == ERR_PTR(-ENODEV))
|
||
|
|
serdes_phy = NULL;
|
||
|
|
else if (IS_ERR(serdes_phy))
|
||
|
|
return PTR_ERR(serdes_phy);
|
||
|
|
else
|
||
|
|
phy_init(serdes_phy);
|
||
|
|
}
|
||
|
|
mac->serdes_phy = serdes_phy;
|
||
|
|
|
||
|
|
/* The MAC does not have the capability to add RGMII delays so
|
||
|
|
* error out if the interface mode requests them and there is no PHY
|
||
|
|
* to act upon them
|
||
|
|
*/
|
||
|
|
if (of_phy_is_fixed_link(to_of_node(dpmac_node)) &&
|
||
|
|
(mac->if_mode == PHY_INTERFACE_MODE_RGMII_ID ||
|
||
|
|
mac->if_mode == PHY_INTERFACE_MODE_RGMII_RXID ||
|
||
|
|
mac->if_mode == PHY_INTERFACE_MODE_RGMII_TXID)) {
|
||
|
|
netdev_err(net_dev, "RGMII delay not supported\n");
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ((mac->attr.link_type == DPMAC_LINK_TYPE_PHY &&
|
||
|
|
mac->attr.eth_if != DPMAC_ETH_IF_RGMII) ||
|
||
|
|
mac->attr.link_type == DPMAC_LINK_TYPE_BACKPLANE) {
|
||
|
|
err = dpaa2_pcs_create(mac, dpmac_node, mac->attr.id);
|
||
|
|
if (err)
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
memset(&mac->phylink_config, 0, sizeof(mac->phylink_config));
|
||
|
|
mac->phylink_config.dev = &net_dev->dev;
|
||
|
|
mac->phylink_config.type = PHYLINK_NETDEV;
|
||
|
|
|
||
|
|
mac->phylink_config.mac_capabilities = MAC_SYM_PAUSE | MAC_ASYM_PAUSE |
|
||
|
|
MAC_10FD | MAC_100FD | MAC_1000FD | MAC_2500FD | MAC_5000FD |
|
||
|
|
MAC_10000FD;
|
||
|
|
|
||
|
|
dpaa2_mac_set_supported_interfaces(mac);
|
||
|
|
|
||
|
|
phylink = phylink_create(&mac->phylink_config,
|
||
|
|
dpmac_node, mac->if_mode,
|
||
|
|
&dpaa2_mac_phylink_ops);
|
||
|
|
if (IS_ERR(phylink)) {
|
||
|
|
err = PTR_ERR(phylink);
|
||
|
|
goto err_pcs_destroy;
|
||
|
|
}
|
||
|
|
mac->phylink = phylink;
|
||
|
|
|
||
|
|
err = phylink_fwnode_phy_connect(mac->phylink, dpmac_node, 0);
|
||
|
|
if (err) {
|
||
|
|
netdev_err(net_dev, "phylink_fwnode_phy_connect() = %d\n", err);
|
||
|
|
goto err_phylink_destroy;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
err_phylink_destroy:
|
||
|
|
phylink_destroy(mac->phylink);
|
||
|
|
err_pcs_destroy:
|
||
|
|
dpaa2_pcs_destroy(mac);
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
void dpaa2_mac_disconnect(struct dpaa2_mac *mac)
|
||
|
|
{
|
||
|
|
if (!mac->phylink)
|
||
|
|
return;
|
||
|
|
|
||
|
|
phylink_disconnect_phy(mac->phylink);
|
||
|
|
phylink_destroy(mac->phylink);
|
||
|
|
dpaa2_pcs_destroy(mac);
|
||
|
|
of_phy_put(mac->serdes_phy);
|
||
|
|
mac->serdes_phy = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
int dpaa2_mac_open(struct dpaa2_mac *mac)
|
||
|
|
{
|
||
|
|
struct fsl_mc_device *dpmac_dev = mac->mc_dev;
|
||
|
|
struct net_device *net_dev = mac->net_dev;
|
||
|
|
struct fwnode_handle *fw_node;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
err = dpmac_open(mac->mc_io, 0, dpmac_dev->obj_desc.id,
|
||
|
|
&dpmac_dev->mc_handle);
|
||
|
|
if (err || !dpmac_dev->mc_handle) {
|
||
|
|
netdev_err(net_dev, "dpmac_open() = %d\n", err);
|
||
|
|
return -ENODEV;
|
||
|
|
}
|
||
|
|
|
||
|
|
err = dpmac_get_attributes(mac->mc_io, 0, dpmac_dev->mc_handle,
|
||
|
|
&mac->attr);
|
||
|
|
if (err) {
|
||
|
|
netdev_err(net_dev, "dpmac_get_attributes() = %d\n", err);
|
||
|
|
goto err_close_dpmac;
|
||
|
|
}
|
||
|
|
|
||
|
|
err = dpmac_get_api_version(mac->mc_io, 0, &mac->ver_major, &mac->ver_minor);
|
||
|
|
if (err) {
|
||
|
|
netdev_err(net_dev, "dpmac_get_api_version() = %d\n", err);
|
||
|
|
goto err_close_dpmac;
|
||
|
|
}
|
||
|
|
|
||
|
|
dpaa2_mac_detect_features(mac);
|
||
|
|
|
||
|
|
/* Find the device node representing the MAC device and link the device
|
||
|
|
* behind the associated netdev to it.
|
||
|
|
*/
|
||
|
|
fw_node = dpaa2_mac_get_node(&mac->mc_dev->dev, mac->attr.id);
|
||
|
|
if (IS_ERR(fw_node)) {
|
||
|
|
err = PTR_ERR(fw_node);
|
||
|
|
goto err_close_dpmac;
|
||
|
|
}
|
||
|
|
|
||
|
|
mac->fw_node = fw_node;
|
||
|
|
net_dev->dev.of_node = to_of_node(mac->fw_node);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
err_close_dpmac:
|
||
|
|
dpmac_close(mac->mc_io, 0, dpmac_dev->mc_handle);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
void dpaa2_mac_close(struct dpaa2_mac *mac)
|
||
|
|
{
|
||
|
|
struct fsl_mc_device *dpmac_dev = mac->mc_dev;
|
||
|
|
|
||
|
|
dpmac_close(mac->mc_io, 0, dpmac_dev->mc_handle);
|
||
|
|
if (mac->fw_node)
|
||
|
|
fwnode_handle_put(mac->fw_node);
|
||
|
|
}
|
||
|
|
|
||
|
|
static char dpaa2_mac_ethtool_stats[][ETH_GSTRING_LEN] = {
|
||
|
|
[DPMAC_CNT_ING_ALL_FRAME] = "[mac] rx all frames",
|
||
|
|
[DPMAC_CNT_ING_GOOD_FRAME] = "[mac] rx frames ok",
|
||
|
|
[DPMAC_CNT_ING_ERR_FRAME] = "[mac] rx frame errors",
|
||
|
|
[DPMAC_CNT_ING_FRAME_DISCARD] = "[mac] rx frame discards",
|
||
|
|
[DPMAC_CNT_ING_UCAST_FRAME] = "[mac] rx u-cast",
|
||
|
|
[DPMAC_CNT_ING_BCAST_FRAME] = "[mac] rx b-cast",
|
||
|
|
[DPMAC_CNT_ING_MCAST_FRAME] = "[mac] rx m-cast",
|
||
|
|
[DPMAC_CNT_ING_FRAME_64] = "[mac] rx 64 bytes",
|
||
|
|
[DPMAC_CNT_ING_FRAME_127] = "[mac] rx 65-127 bytes",
|
||
|
|
[DPMAC_CNT_ING_FRAME_255] = "[mac] rx 128-255 bytes",
|
||
|
|
[DPMAC_CNT_ING_FRAME_511] = "[mac] rx 256-511 bytes",
|
||
|
|
[DPMAC_CNT_ING_FRAME_1023] = "[mac] rx 512-1023 bytes",
|
||
|
|
[DPMAC_CNT_ING_FRAME_1518] = "[mac] rx 1024-1518 bytes",
|
||
|
|
[DPMAC_CNT_ING_FRAME_1519_MAX] = "[mac] rx 1519-max bytes",
|
||
|
|
[DPMAC_CNT_ING_FRAG] = "[mac] rx frags",
|
||
|
|
[DPMAC_CNT_ING_JABBER] = "[mac] rx jabber",
|
||
|
|
[DPMAC_CNT_ING_ALIGN_ERR] = "[mac] rx align errors",
|
||
|
|
[DPMAC_CNT_ING_OVERSIZED] = "[mac] rx oversized",
|
||
|
|
[DPMAC_CNT_ING_VALID_PAUSE_FRAME] = "[mac] rx pause",
|
||
|
|
[DPMAC_CNT_ING_BYTE] = "[mac] rx bytes",
|
||
|
|
[DPMAC_CNT_EGR_GOOD_FRAME] = "[mac] tx frames ok",
|
||
|
|
[DPMAC_CNT_EGR_UCAST_FRAME] = "[mac] tx u-cast",
|
||
|
|
[DPMAC_CNT_EGR_MCAST_FRAME] = "[mac] tx m-cast",
|
||
|
|
[DPMAC_CNT_EGR_BCAST_FRAME] = "[mac] tx b-cast",
|
||
|
|
[DPMAC_CNT_EGR_ERR_FRAME] = "[mac] tx frame errors",
|
||
|
|
[DPMAC_CNT_EGR_UNDERSIZED] = "[mac] tx undersized",
|
||
|
|
[DPMAC_CNT_EGR_VALID_PAUSE_FRAME] = "[mac] tx b-pause",
|
||
|
|
[DPMAC_CNT_EGR_BYTE] = "[mac] tx bytes",
|
||
|
|
};
|
||
|
|
|
||
|
|
#define DPAA2_MAC_NUM_STATS ARRAY_SIZE(dpaa2_mac_ethtool_stats)
|
||
|
|
|
||
|
|
int dpaa2_mac_get_sset_count(void)
|
||
|
|
{
|
||
|
|
return DPAA2_MAC_NUM_STATS;
|
||
|
|
}
|
||
|
|
|
||
|
|
void dpaa2_mac_get_strings(u8 *data)
|
||
|
|
{
|
||
|
|
u8 *p = data;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
for (i = 0; i < DPAA2_MAC_NUM_STATS; i++) {
|
||
|
|
strscpy(p, dpaa2_mac_ethtool_stats[i], ETH_GSTRING_LEN);
|
||
|
|
p += ETH_GSTRING_LEN;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void dpaa2_mac_get_ethtool_stats(struct dpaa2_mac *mac, u64 *data)
|
||
|
|
{
|
||
|
|
struct fsl_mc_device *dpmac_dev = mac->mc_dev;
|
||
|
|
int i, err;
|
||
|
|
u64 value;
|
||
|
|
|
||
|
|
for (i = 0; i < DPAA2_MAC_NUM_STATS; i++) {
|
||
|
|
err = dpmac_get_counter(mac->mc_io, 0, dpmac_dev->mc_handle,
|
||
|
|
i, &value);
|
||
|
|
if (err) {
|
||
|
|
netdev_err_once(mac->net_dev,
|
||
|
|
"dpmac_get_counter error %d\n", err);
|
||
|
|
*(data + i) = U64_MAX;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
*(data + i) = value;
|
||
|
|
}
|
||
|
|
}
|