diff options
Diffstat (limited to 'drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c')
| -rw-r--r-- | drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c | 246 |
1 files changed, 191 insertions, 55 deletions
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c index 623d113b6581..422ce13a7c94 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c @@ -3,6 +3,7 @@ #include <linux/acpi.h> #include <linux/pcs-lynx.h> +#include <linux/phy/phy.h> #include <linux/property.h> #include "dpaa2-eth.h" @@ -11,6 +12,28 @@ #define phylink_to_dpaa2_mac(config) \ container_of((config), struct dpaa2_mac, phylink_config) +#define DPMAC_PROTOCOL_CHANGE_VER_MAJOR 4 +#define DPMAC_PROTOCOL_CHANGE_VER_MINOR 8 + +#define DPAA2_MAC_FEATURE_PROTOCOL_CHANGE BIT(0) + +static int dpaa2_mac_cmp_ver(struct dpaa2_mac *mac, + u16 ver_major, u16 ver_minor) +{ + if (mac->ver_major == ver_major) + return mac->ver_minor - ver_minor; + return mac->ver_major - ver_major; +} + +static void dpaa2_mac_detect_features(struct dpaa2_mac *mac) +{ + mac->features = 0; + + if (dpaa2_mac_cmp_ver(mac, DPMAC_PROTOCOL_CHANGE_VER_MAJOR, + DPMAC_PROTOCOL_CHANGE_VER_MINOR) >= 0) + mac->features |= DPAA2_MAC_FEATURE_PROTOCOL_CHANGE; +} + static int phy_mode(enum dpmac_eth_if eth_if, phy_interface_t *if_mode) { *if_mode = PHY_INTERFACE_MODE_NA; @@ -31,6 +54,9 @@ static int phy_mode(enum dpmac_eth_if eth_if, phy_interface_t *if_mode) case DPMAC_ETH_IF_XFI: *if_mode = PHY_INTERFACE_MODE_10GBASER; break; + case DPMAC_ETH_IF_CAUI: + *if_mode = PHY_INTERFACE_MODE_25GBASER; + break; default: return -EINVAL; } @@ -38,6 +64,31 @@ static int phy_mode(enum dpmac_eth_if eth_if, phy_interface_t *if_mode) return 0; } +static enum dpmac_eth_if dpmac_eth_if_mode(phy_interface_t if_mode) +{ + switch (if_mode) { + case PHY_INTERFACE_MODE_RGMII: + case PHY_INTERFACE_MODE_RGMII_ID: + case PHY_INTERFACE_MODE_RGMII_RXID: + case PHY_INTERFACE_MODE_RGMII_TXID: + return DPMAC_ETH_IF_RGMII; + case PHY_INTERFACE_MODE_USXGMII: + return DPMAC_ETH_IF_USXGMII; + case PHY_INTERFACE_MODE_QSGMII: + return DPMAC_ETH_IF_QSGMII; + case PHY_INTERFACE_MODE_SGMII: + return DPMAC_ETH_IF_SGMII; + case PHY_INTERFACE_MODE_10GBASER: + return DPMAC_ETH_IF_XFI; + case PHY_INTERFACE_MODE_1000BASEX: + return DPMAC_ETH_IF_1000BASEX; + case PHY_INTERFACE_MODE_25GBASER: + return DPMAC_ETH_IF_CAUI; + default: + return DPMAC_ETH_IF_MII; + } +} + static struct fwnode_handle *dpaa2_mac_get_node(struct device *dev, u16 dpmac_id) { @@ -59,12 +110,10 @@ static struct fwnode_handle *dpaa2_mac_get_node(struct device *dev, * thus the fwnode field is not yet set. Defer probe if we are * facing this situation. */ + dev_dbg(dev, "dprc not finished probing\n"); return ERR_PTR(-EPROBE_DEFER); } - if (!parent) - return NULL; - fwnode_for_each_child_node(parent, child) { err = -EINVAL; if (is_acpi_device_node(child)) @@ -100,6 +149,14 @@ static int dpaa2_mac_get_if_mode(struct fwnode_handle *dpmac_node, return err; } +static struct phylink_pcs *dpaa2_mac_select_pcs(struct phylink_config *config, + phy_interface_t interface) +{ + struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config); + + return mac->pcs; +} + static void dpaa2_mac_config(struct phylink_config *config, unsigned int mode, const struct phylink_link_state *state) { @@ -107,7 +164,8 @@ static void dpaa2_mac_config(struct phylink_config *config, unsigned int mode, struct dpmac_link_state *dpmac_state = &mac->state; int err; - if (state->an_enabled) + if (linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, + state->advertising)) dpmac_state->options |= DPMAC_LINK_OPT_AUTONEG; else dpmac_state->options &= ~DPMAC_LINK_OPT_AUTONEG; @@ -117,6 +175,19 @@ static void dpaa2_mac_config(struct phylink_config *config, unsigned int mode, if (err) netdev_err(mac->net_dev, "%s: dpmac_set_link_state() = %d\n", __func__, err); + + if (!mac->serdes_phy) + return; + + /* This happens only if we support changing of protocol at runtime */ + err = dpmac_set_protocol(mac->mc_io, 0, mac->mc_dev->mc_handle, + dpmac_eth_if_mode(state->interface)); + if (err) + netdev_err(mac->net_dev, "dpmac_set_protocol() = %d\n", err); + + err = phy_set_mode_ext(mac->serdes_phy, PHY_MODE_ETHERNET, state->interface); + if (err) + netdev_err(mac->net_dev, "phy_set_mode_ext() = %d\n", err); } static void dpaa2_mac_link_up(struct phylink_config *config, @@ -171,7 +242,7 @@ static void dpaa2_mac_link_down(struct phylink_config *config, } static const struct phylink_mac_ops dpaa2_mac_phylink_ops = { - .validate = phylink_generic_validate, + .mac_select_pcs = dpaa2_mac_select_pcs, .mac_config = dpaa2_mac_config, .mac_link_up = dpaa2_mac_link_up, .mac_link_down = dpaa2_mac_link_down, @@ -181,8 +252,8 @@ static int dpaa2_pcs_create(struct dpaa2_mac *mac, struct fwnode_handle *dpmac_node, int id) { - struct mdio_device *mdiodev; struct fwnode_handle *node; + struct phylink_pcs *pcs; node = fwnode_find_reference(dpmac_node, "pcs-handle", 0); if (IS_ERR(node)) { @@ -191,24 +262,27 @@ static int dpaa2_pcs_create(struct dpaa2_mac *mac, return 0; } - if (!fwnode_device_is_available(node)) { - netdev_err(mac->net_dev, "pcs-handle node not available\n"); - fwnode_handle_put(node); - return -ENODEV; - } - - mdiodev = fwnode_mdio_find_device(node); + pcs = lynx_pcs_create_fwnode(node); fwnode_handle_put(node); - if (!mdiodev) + + if (pcs == ERR_PTR(-EPROBE_DEFER)) { + netdev_dbg(mac->net_dev, "missing PCS device\n"); return -EPROBE_DEFER; + } + + if (pcs == ERR_PTR(-ENODEV)) { + netdev_err(mac->net_dev, "pcs-handle node not available\n"); + return PTR_ERR(pcs); + } - mac->pcs = lynx_pcs_create(mdiodev); - if (!mac->pcs) { - netdev_err(mac->net_dev, "lynx_pcs_create() failed\n"); - put_device(&mdiodev->dev); - return -ENOMEM; + if (IS_ERR(pcs)) { + netdev_err(mac->net_dev, + "lynx_pcs_create_fwnode() failed: %pe\n", pcs); + return PTR_ERR(pcs); } + mac->pcs = pcs; + return 0; } @@ -217,19 +291,79 @@ static void dpaa2_pcs_destroy(struct dpaa2_mac *mac) struct phylink_pcs *phylink_pcs = mac->pcs; if (phylink_pcs) { - struct mdio_device *mdio = lynx_get_mdio_device(phylink_pcs); - struct device *dev = &mdio->dev; - lynx_pcs_destroy(phylink_pcs); - put_device(dev); mac->pcs = NULL; } } +static void dpaa2_mac_set_supported_interfaces(struct dpaa2_mac *mac) +{ + int intf, err; + + /* We support the current interface mode, and if we have a PCS + * similar interface modes that do not require the SerDes lane to be + * reconfigured. + */ + __set_bit(mac->if_mode, mac->phylink_config.supported_interfaces); + if (mac->pcs) { + switch (mac->if_mode) { + case PHY_INTERFACE_MODE_1000BASEX: + case PHY_INTERFACE_MODE_SGMII: + __set_bit(PHY_INTERFACE_MODE_1000BASEX, + mac->phylink_config.supported_interfaces); + __set_bit(PHY_INTERFACE_MODE_SGMII, + mac->phylink_config.supported_interfaces); + break; + + default: + break; + } + } + + if (!mac->serdes_phy) + return; + + /* In case we have access to the SerDes phy/lane, then ask the SerDes + * driver what interfaces are supported based on the current PLL + * configuration. + */ + for (intf = 0; intf < PHY_INTERFACE_MODE_MAX; intf++) { + if (intf == PHY_INTERFACE_MODE_NA) + continue; + + err = phy_validate(mac->serdes_phy, PHY_MODE_ETHERNET, intf, NULL); + if (err) + continue; + + __set_bit(intf, mac->phylink_config.supported_interfaces); + } +} + +void dpaa2_mac_start(struct dpaa2_mac *mac) +{ + ASSERT_RTNL(); + + if (mac->serdes_phy) + phy_power_on(mac->serdes_phy); + + phylink_start(mac->phylink); +} + +void dpaa2_mac_stop(struct dpaa2_mac *mac) +{ + ASSERT_RTNL(); + + phylink_stop(mac->phylink); + + if (mac->serdes_phy) + phy_power_off(mac->serdes_phy); +} + int dpaa2_mac_connect(struct dpaa2_mac *mac) { struct net_device *net_dev = mac->net_dev; struct fwnode_handle *dpmac_node; + struct phy *serdes_phy = NULL; struct phylink *phylink; int err; @@ -246,6 +380,20 @@ int dpaa2_mac_connect(struct dpaa2_mac *mac) 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 @@ -272,27 +420,9 @@ int dpaa2_mac_connect(struct dpaa2_mac *mac) mac->phylink_config.mac_capabilities = MAC_SYM_PAUSE | MAC_ASYM_PAUSE | MAC_10FD | MAC_100FD | MAC_1000FD | MAC_2500FD | MAC_5000FD | - MAC_10000FD; + MAC_10000FD | MAC_25000FD; - /* We support the current interface mode, and if we have a PCS - * similar interface modes that do not require the PLLs to be - * reconfigured. - */ - __set_bit(mac->if_mode, mac->phylink_config.supported_interfaces); - if (mac->pcs) { - switch (mac->if_mode) { - case PHY_INTERFACE_MODE_1000BASEX: - case PHY_INTERFACE_MODE_SGMII: - __set_bit(PHY_INTERFACE_MODE_1000BASEX, - mac->phylink_config.supported_interfaces); - __set_bit(PHY_INTERFACE_MODE_SGMII, - mac->phylink_config.supported_interfaces); - break; - - default: - break; - } - } + dpaa2_mac_set_supported_interfaces(mac); phylink = phylink_create(&mac->phylink_config, dpmac_node, mac->if_mode, @@ -303,10 +433,9 @@ int dpaa2_mac_connect(struct dpaa2_mac *mac) } mac->phylink = phylink; - if (mac->pcs) - phylink_set_pcs(mac->phylink, mac->pcs); - + rtnl_lock(); err = phylink_fwnode_phy_connect(mac->phylink, dpmac_node, 0); + rtnl_unlock(); if (err) { netdev_err(net_dev, "phylink_fwnode_phy_connect() = %d\n", err); goto err_phylink_destroy; @@ -324,12 +453,14 @@ err_pcs_destroy: void dpaa2_mac_disconnect(struct dpaa2_mac *mac) { - if (!mac->phylink) - return; - + rtnl_lock(); phylink_disconnect_phy(mac->phylink); + rtnl_unlock(); + 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) @@ -353,6 +484,14 @@ int dpaa2_mac_open(struct dpaa2_mac *mac) 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. */ @@ -419,15 +558,12 @@ int dpaa2_mac_get_sset_count(void) return DPAA2_MAC_NUM_STATS; } -void dpaa2_mac_get_strings(u8 *data) +void dpaa2_mac_get_strings(u8 **data) { - u8 *p = data; int i; - for (i = 0; i < DPAA2_MAC_NUM_STATS; i++) { - strlcpy(p, dpaa2_mac_ethtool_stats[i], ETH_GSTRING_LEN); - p += ETH_GSTRING_LEN; - } + for (i = 0; i < DPAA2_MAC_NUM_STATS; i++) + ethtool_puts(data, dpaa2_mac_ethtool_stats[i]); } void dpaa2_mac_get_ethtool_stats(struct dpaa2_mac *mac, u64 *data) |