/* * Copyright (c) 2018, Mellanox Technologies. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include "port.h" /* speed in units of 1Mb */ static const u32 mlx5e_link_speed[MLX5E_LINK_MODES_NUMBER] = { [MLX5E_1000BASE_CX_SGMII] = 1000, [MLX5E_1000BASE_KX] = 1000, [MLX5E_10GBASE_CX4] = 10000, [MLX5E_10GBASE_KX4] = 10000, [MLX5E_10GBASE_KR] = 10000, [MLX5E_20GBASE_KR2] = 20000, [MLX5E_40GBASE_CR4] = 40000, [MLX5E_40GBASE_KR4] = 40000, [MLX5E_56GBASE_R4] = 56000, [MLX5E_10GBASE_CR] = 10000, [MLX5E_10GBASE_SR] = 10000, [MLX5E_10GBASE_ER] = 10000, [MLX5E_40GBASE_SR4] = 40000, [MLX5E_40GBASE_LR4] = 40000, [MLX5E_50GBASE_SR2] = 50000, [MLX5E_100GBASE_CR4] = 100000, [MLX5E_100GBASE_SR4] = 100000, [MLX5E_100GBASE_KR4] = 100000, [MLX5E_100GBASE_LR4] = 100000, [MLX5E_100BASE_TX] = 100, [MLX5E_1000BASE_T] = 1000, [MLX5E_10GBASE_T] = 10000, [MLX5E_25GBASE_CR] = 25000, [MLX5E_25GBASE_KR] = 25000, [MLX5E_25GBASE_SR] = 25000, [MLX5E_50GBASE_CR2] = 50000, [MLX5E_50GBASE_KR2] = 50000, }; static const u32 mlx5e_ext_link_speed[MLX5E_EXT_LINK_MODES_NUMBER] = { [MLX5E_SGMII_100M] = 100, [MLX5E_1000BASE_X_SGMII] = 1000, [MLX5E_5GBASE_R] = 5000, [MLX5E_10GBASE_XFI_XAUI_1] = 10000, [MLX5E_40GBASE_XLAUI_4_XLPPI_4] = 40000, [MLX5E_25GAUI_1_25GBASE_CR_KR] = 25000, [MLX5E_50GAUI_2_LAUI_2_50GBASE_CR2_KR2] = 50000, [MLX5E_50GAUI_1_LAUI_1_50GBASE_CR_KR] = 50000, [MLX5E_CAUI_4_100GBASE_CR4_KR4] = 100000, [MLX5E_200GAUI_4_200GBASE_CR4_KR4] = 200000, [MLX5E_400GAUI_8] = 400000, }; static void mlx5e_port_get_speed_arr(struct mlx5_core_dev *mdev, const u32 **arr, u32 *size, bool force_legacy) { bool ext = force_legacy ? false : MLX5_CAP_PCAM_FEATURE(mdev, ptys_extended_ethernet); *size = ext ? ARRAY_SIZE(mlx5e_ext_link_speed) : ARRAY_SIZE(mlx5e_link_speed); *arr = ext ? mlx5e_ext_link_speed : mlx5e_link_speed; } int mlx5_port_query_eth_proto(struct mlx5_core_dev *dev, u8 port, bool ext, struct mlx5e_port_eth_proto *eproto) { u32 out[MLX5_ST_SZ_DW(ptys_reg)]; int err; if (!eproto) return -EINVAL; err = mlx5_query_port_ptys(dev, out, sizeof(out), MLX5_PTYS_EN, port); if (err) return err; eproto->cap = MLX5_GET_ETH_PROTO(ptys_reg, out, ext, eth_proto_capability); eproto->admin = MLX5_GET_ETH_PROTO(ptys_reg, out, ext, eth_proto_admin); eproto->oper = MLX5_GET_ETH_PROTO(ptys_reg, out, ext, eth_proto_oper); return 0; } void mlx5_port_query_eth_autoneg(struct mlx5_core_dev *dev, u8 *an_status, u8 *an_disable_cap, u8 *an_disable_admin) { u32 out[MLX5_ST_SZ_DW(ptys_reg)]; *an_status = 0; *an_disable_cap = 0; *an_disable_admin = 0; if (mlx5_query_port_ptys(dev, out, sizeof(out), MLX5_PTYS_EN, 1)) return; *an_status = MLX5_GET(ptys_reg, out, an_status); *an_disable_cap = MLX5_GET(ptys_reg, out, an_disable_cap); *an_disable_admin = MLX5_GET(ptys_reg, out, an_disable_admin); } int mlx5_port_set_eth_ptys(struct mlx5_core_dev *dev, bool an_disable, u32 proto_admin, bool ext) { u32 out[MLX5_ST_SZ_DW(ptys_reg)]; u32 in[MLX5_ST_SZ_DW(ptys_reg)]; u8 an_disable_admin; u8 an_disable_cap; u8 an_status; mlx5_port_query_eth_autoneg(dev, &an_status, &an_disable_cap, &an_disable_admin); if (!an_disable_cap && an_disable) return -EPERM; memset(in, 0, sizeof(in)); MLX5_SET(ptys_reg, in, local_port, 1); MLX5_SET(ptys_reg, in, an_disable_admin, an_disable); MLX5_SET(ptys_reg, in, proto_mask, MLX5_PTYS_EN); if (ext) MLX5_SET(ptys_reg, in, ext_eth_proto_admin, proto_admin); else MLX5_SET(ptys_reg, in, eth_proto_admin, proto_admin); return mlx5_core_access_reg(dev, in, sizeof(in), out, sizeof(out), MLX5_REG_PTYS, 0, 1); } u32 mlx5e_port_ptys2speed(struct mlx5_core_dev *mdev, u32 eth_proto_oper, bool force_legacy) { unsigned long temp = eth_proto_oper; const u32 *table; u32 speed = 0; u32 max_size; int i; mlx5e_port_get_speed_arr(mdev, &table, &max_size, force_legacy); i = find_first_bit(&temp, max_size); if (i < max_size) speed = table[i]; return speed; } int mlx5e_port_linkspeed(struct mlx5_core_dev *mdev, u32 *speed) { struct mlx5e_port_eth_proto eproto; bool force_legacy = false; bool ext; int err; ext = MLX5_CAP_PCAM_FEATURE(mdev, ptys_extended_ethernet); err = mlx5_port_query_eth_proto(mdev, 1, ext, &eproto); if (err) goto out; if (ext && !eproto.admin) { force_legacy = true; err = mlx5_port_query_eth_proto(mdev, 1, false, &eproto); if (err) goto out; } *speed = mlx5e_port_ptys2speed(mdev, eproto.oper, force_legacy); if (!(*speed)) err = -EINVAL; out: return err; } int mlx5e_port_max_linkspeed(struct mlx5_core_dev *mdev, u32 *speed) { struct mlx5e_port_eth_proto eproto; u32 max_speed = 0; const u32 *table; u32 max_size; bool ext; int err; int i; ext = MLX5_CAP_PCAM_FEATURE(mdev, ptys_extended_ethernet); err = mlx5_port_query_eth_proto(mdev, 1, ext, &eproto); if (err) return err; mlx5e_port_get_speed_arr(mdev, &table, &max_size, false); for (i = 0; i < max_size; ++i) if (eproto.cap & MLX5E_PROT_MASK(i)) max_speed = max(max_speed, table[i]); *speed = max_speed; return 0; } u32 mlx5e_port_speed2linkmodes(struct mlx5_core_dev *mdev, u32 speed, bool force_legacy) { u32 link_modes = 0; const u32 *table; u32 max_size; int i; mlx5e_port_get_speed_arr(mdev, &table, &max_size, force_legacy); for (i = 0; i < max_size; ++i) { if (table[i] == speed) link_modes |= MLX5E_PROT_MASK(i); } return link_modes; } int mlx5e_port_query_pbmc(struct mlx5_core_dev *mdev, void *out) { int sz = MLX5_ST_SZ_BYTES(pbmc_reg); void *in; int err; in = kzalloc(sz, GFP_KERNEL); if (!in) return -ENOMEM; MLX5_SET(pbmc_reg, in, local_port, 1); err = mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_PBMC, 0, 0); kfree(in); return err; } int mlx5e_port_set_pbmc(struct mlx5_core_dev *mdev, void *in) { int sz = MLX5_ST_SZ_BYTES(pbmc_reg); void *out; int err; out = kzalloc(sz, GFP_KERNEL); if (!out) return -ENOMEM; MLX5_SET(pbmc_reg, in, local_port, 1); err = mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_PBMC, 0, 1); kfree(out); return err; } /* buffer[i]: buffer that priority i mapped to */ int mlx5e_port_query_priority2buffer(struct mlx5_core_dev *mdev, u8 *buffer) { int sz = MLX5_ST_SZ_BYTES(pptb_reg); u32 prio_x_buff; void *out; void *in; int prio; int err; in = kzalloc(sz, GFP_KERNEL); out = kzalloc(sz, GFP_KERNEL); if (!in || !out) { err = -ENOMEM; goto out; } MLX5_SET(pptb_reg, in, local_port, 1); err = mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_PPTB, 0, 0); if (err) goto out; prio_x_buff = MLX5_GET(pptb_reg, out, prio_x_buff); for (prio = 0; prio < 8; prio++) { buffer[prio] = (u8)(prio_x_buff >> (4 * prio)) & 0xF; mlx5_core_dbg(mdev, "prio %d, buffer %d\n", prio, buffer[prio]); } out: kfree(in); kfree(out); return err; } int mlx5e_port_set_priority2buffer(struct mlx5_core_dev *mdev, u8 *buffer) { int sz = MLX5_ST_SZ_BYTES(pptb_reg); u32 prio_x_buff; void *out; void *in; int prio; int err; in = kzalloc(sz, GFP_KERNEL); out = kzalloc(sz, GFP_KERNEL); if (!in || !out) { err = -ENOMEM; goto out; } /* First query the pptb register */ MLX5_SET(pptb_reg, in, local_port, 1); err = mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_PPTB, 0, 0); if (err) goto out; memcpy(in, out, sz); MLX5_SET(pptb_reg, in, local_port, 1); /* Update the pm and prio_x_buff */ MLX5_SET(pptb_reg, in, pm, 0xFF); prio_x_buff = 0; for (prio = 0; prio < 8; prio++) prio_x_buff |= (buffer[prio] << (4 * prio)); MLX5_SET(pptb_reg, in, prio_x_buff, prio_x_buff); err = mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_PPTB, 0, 1); out: kfree(in); kfree(out); return err; } static u32 fec_supported_speeds[] = { 10000, 40000, 25000, 50000, 56000, 100000 }; #define MLX5E_FEC_SUPPORTED_SPEEDS ARRAY_SIZE(fec_supported_speeds) /* get/set FEC admin field for a given speed */ static int mlx5e_fec_admin_field(u32 *pplm, u8 *fec_policy, bool write, u32 speed) { switch (speed) { case 10000: case 40000: if (!write) *fec_policy = MLX5_GET(pplm_reg, pplm, fec_override_admin_10g_40g); else MLX5_SET(pplm_reg, pplm, fec_override_admin_10g_40g, *fec_policy); break; case 25000: if (!write) *fec_policy = MLX5_GET(pplm_reg, pplm, fec_override_admin_25g); else MLX5_SET(pplm_reg, pplm, fec_override_admin_25g, *fec_policy); break; case 50000: if (!write) *fec_policy = MLX5_GET(pplm_reg, pplm, fec_override_admin_50g); else MLX5_SET(pplm_reg, pplm, fec_override_admin_50g, *fec_policy); break; case 56000: if (!write) *fec_policy = MLX5_GET(pplm_reg, pplm, fec_override_admin_56g); else MLX5_SET(pplm_reg, pplm, fec_override_admin_56g, *fec_policy); break; case 100000: if (!write) *fec_policy = MLX5_GET(pplm_reg, pplm, fec_override_admin_100g); else MLX5_SET(pplm_reg, pplm, fec_override_admin_100g, *fec_policy); break; default: return -EINVAL; } return 0; } /* returns FEC capabilities for a given speed */ static int mlx5e_get_fec_cap_field(u32 *pplm, u8 *fec_cap, u32 speed) { switch (speed) { case 10000: case 40000: *fec_cap = MLX5_GET(pplm_reg, pplm, fec_override_cap_10g_40g); break; case 25000: *fec_cap = MLX5_GET(pplm_reg, pplm, fec_override_cap_25g); break; case 50000: *fec_cap = MLX5_GET(pplm_reg, pplm, fec_override_cap_50g); break; case 56000: *fec_cap = MLX5_GET(pplm_reg, pplm, fec_override_cap_56g); break; case 100000: *fec_cap = MLX5_GET(pplm_reg, pplm, fec_override_cap_100g); break; default: return -EINVAL; } return 0; } int mlx5e_get_fec_caps(struct mlx5_core_dev *dev, u8 *fec_caps) { u32 out[MLX5_ST_SZ_DW(pplm_reg)] = {}; u32 in[MLX5_ST_SZ_DW(pplm_reg)] = {}; int sz = MLX5_ST_SZ_BYTES(pplm_reg); u32 current_fec_speed; int err; if (!MLX5_CAP_GEN(dev, pcam_reg)) return -EOPNOTSUPP; if (!MLX5_CAP_PCAM_REG(dev, pplm)) return -EOPNOTSUPP; MLX5_SET(pplm_reg, in, local_port, 1); err = mlx5_core_access_reg(dev, in, sz, out, sz, MLX5_REG_PPLM, 0, 0); if (err) return err; err = mlx5e_port_linkspeed(dev, ¤t_fec_speed); if (err) return err; return mlx5e_get_fec_cap_field(out, fec_caps, current_fec_speed); } int mlx5e_get_fec_mode(struct mlx5_core_dev *dev, u32 *fec_mode_active, u8 *fec_configured_mode) { u32 out[MLX5_ST_SZ_DW(pplm_reg)] = {}; u32 in[MLX5_ST_SZ_DW(pplm_reg)] = {}; int sz = MLX5_ST_SZ_BYTES(pplm_reg); u32 link_speed; int err; if (!MLX5_CAP_GEN(dev, pcam_reg)) return -EOPNOTSUPP; if (!MLX5_CAP_PCAM_REG(dev, pplm)) return -EOPNOTSUPP; MLX5_SET(pplm_reg, in, local_port, 1); err = mlx5_core_access_reg(dev, in, sz, out, sz, MLX5_REG_PPLM, 0, 0); if (err) return err; *fec_mode_active = MLX5_GET(pplm_reg, out, fec_mode_active); if (!fec_configured_mode) return 0; err = mlx5e_port_linkspeed(dev, &link_speed); if (err) return err; return mlx5e_fec_admin_field(out, fec_configured_mode, 0, link_speed); } int mlx5e_set_fec_mode(struct mlx5_core_dev *dev, u8 fec_policy) { u8 fec_policy_nofec = BIT(MLX5E_FEC_NOFEC); bool fec_mode_not_supp_in_speed = false; u32 out[MLX5_ST_SZ_DW(pplm_reg)] = {}; u32 in[MLX5_ST_SZ_DW(pplm_reg)] = {}; int sz = MLX5_ST_SZ_BYTES(pplm_reg); u8 fec_policy_auto = 0; u8 fec_caps = 0; int err; int i; if (!MLX5_CAP_GEN(dev, pcam_reg)) return -EOPNOTSUPP; if (!MLX5_CAP_PCAM_REG(dev, pplm)) return -EOPNOTSUPP; MLX5_SET(pplm_reg, in, local_port, 1); err = mlx5_core_access_reg(dev, in, sz, out, sz, MLX5_REG_PPLM, 0, 0); if (err) return err; MLX5_SET(pplm_reg, out, local_port, 1); for (i = 0; i < MLX5E_FEC_SUPPORTED_SPEEDS; i++) { mlx5e_get_fec_cap_field(out, &fec_caps, fec_supported_speeds[i]); /* policy supported for link speed, or policy is auto */ if (fec_caps & fec_policy || fec_policy == fec_policy_auto) { mlx5e_fec_admin_field(out, &fec_policy, 1, fec_supported_speeds[i]); } else { /* turn off FEC if supported. Else, leave it the same */ if (fec_caps & fec_policy_nofec) mlx5e_fec_admin_field(out, &fec_policy_nofec, 1, fec_supported_speeds[i]); fec_mode_not_supp_in_speed = true; } } if (fec_mode_not_supp_in_speed) mlx5_core_dbg(dev, "FEC policy 0x%x is not supported for some speeds", fec_policy); return mlx5_core_access_reg(dev, out, sz, out, sz, MLX5_REG_PPLM, 0, 1); }