From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- drivers/net/ethernet/amd/xgbe/xgbe-main.c | 490 ++++++++++++++++++++++++++++++ 1 file changed, 490 insertions(+) create mode 100644 drivers/net/ethernet/amd/xgbe/xgbe-main.c (limited to 'drivers/net/ethernet/amd/xgbe/xgbe-main.c') diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-main.c b/drivers/net/ethernet/amd/xgbe/xgbe-main.c new file mode 100644 index 000000000..0e8698928 --- /dev/null +++ b/drivers/net/ethernet/amd/xgbe/xgbe-main.c @@ -0,0 +1,490 @@ +/* + * AMD 10Gb Ethernet driver + * + * This file is available to you under your choice of the following two + * licenses: + * + * License 1: GPLv2 + * + * Copyright (c) 2014-2016 Advanced Micro Devices, Inc. + * + * This file is free software; you may copy, redistribute and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or (at + * your option) any later version. + * + * This file is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + * + * This file incorporates work covered by the following copyright and + * permission notice: + * The Synopsys DWC ETHER XGMAC Software Driver and documentation + * (hereinafter "Software") is an unsupported proprietary work of Synopsys, + * Inc. unless otherwise expressly agreed to in writing between Synopsys + * and you. + * + * The Software IS NOT an item of Licensed Software or Licensed Product + * under any End User Software License Agreement or Agreement for Licensed + * Product with Synopsys or any supplement thereto. Permission is hereby + * granted, free of charge, to any person obtaining a copy of this software + * annotated with this license and the Software, to deal in the Software + * without restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is furnished + * to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" + * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF + * THE POSSIBILITY OF SUCH DAMAGE. + * + * + * License 2: Modified BSD + * + * Copyright (c) 2014-2016 Advanced Micro Devices, Inc. + * All rights reserved. + * + * 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. + * * Neither the name of Advanced Micro Devices, Inc. nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file incorporates work covered by the following copyright and + * permission notice: + * The Synopsys DWC ETHER XGMAC Software Driver and documentation + * (hereinafter "Software") is an unsupported proprietary work of Synopsys, + * Inc. unless otherwise expressly agreed to in writing between Synopsys + * and you. + * + * The Software IS NOT an item of Licensed Software or Licensed Product + * under any End User Software License Agreement or Agreement for Licensed + * Product with Synopsys or any supplement thereto. Permission is hereby + * granted, free of charge, to any person obtaining a copy of this software + * annotated with this license and the Software, to deal in the Software + * without restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is furnished + * to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" + * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF + * THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "xgbe.h" +#include "xgbe-common.h" + +MODULE_AUTHOR("Tom Lendacky "); +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_DESCRIPTION(XGBE_DRV_DESC); + +static int debug = -1; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, " Network interface message level setting"); + +static const u32 default_msg_level = (NETIF_MSG_LINK | NETIF_MSG_IFDOWN | + NETIF_MSG_IFUP); + +static void xgbe_default_config(struct xgbe_prv_data *pdata) +{ + DBGPR("-->xgbe_default_config\n"); + + pdata->blen = DMA_SBMR_BLEN_64; + pdata->pbl = DMA_PBL_128; + pdata->aal = 1; + pdata->rd_osr_limit = 8; + pdata->wr_osr_limit = 8; + pdata->tx_sf_mode = MTL_TSF_ENABLE; + pdata->tx_threshold = MTL_TX_THRESHOLD_64; + pdata->tx_osp_mode = DMA_OSP_ENABLE; + pdata->rx_sf_mode = MTL_RSF_DISABLE; + pdata->rx_threshold = MTL_RX_THRESHOLD_64; + pdata->pause_autoneg = 1; + pdata->tx_pause = 1; + pdata->rx_pause = 1; + pdata->phy_speed = SPEED_UNKNOWN; + pdata->power_down = 0; + + DBGPR("<--xgbe_default_config\n"); +} + +static void xgbe_init_all_fptrs(struct xgbe_prv_data *pdata) +{ + xgbe_init_function_ptrs_dev(&pdata->hw_if); + xgbe_init_function_ptrs_phy(&pdata->phy_if); + xgbe_init_function_ptrs_i2c(&pdata->i2c_if); + xgbe_init_function_ptrs_desc(&pdata->desc_if); + + pdata->vdata->init_function_ptrs_phy_impl(&pdata->phy_if); +} + +struct xgbe_prv_data *xgbe_alloc_pdata(struct device *dev) +{ + struct xgbe_prv_data *pdata; + struct net_device *netdev; + + netdev = alloc_etherdev_mq(sizeof(struct xgbe_prv_data), + XGBE_MAX_DMA_CHANNELS); + if (!netdev) { + dev_err(dev, "alloc_etherdev_mq failed\n"); + return ERR_PTR(-ENOMEM); + } + SET_NETDEV_DEV(netdev, dev); + pdata = netdev_priv(netdev); + pdata->netdev = netdev; + pdata->dev = dev; + + spin_lock_init(&pdata->lock); + spin_lock_init(&pdata->xpcs_lock); + mutex_init(&pdata->rss_mutex); + spin_lock_init(&pdata->tstamp_lock); + mutex_init(&pdata->i2c_mutex); + init_completion(&pdata->i2c_complete); + init_completion(&pdata->mdio_complete); + + pdata->msg_enable = netif_msg_init(debug, default_msg_level); + + set_bit(XGBE_DOWN, &pdata->dev_state); + set_bit(XGBE_STOPPED, &pdata->dev_state); + + return pdata; +} + +void xgbe_free_pdata(struct xgbe_prv_data *pdata) +{ + struct net_device *netdev = pdata->netdev; + + free_netdev(netdev); +} + +void xgbe_set_counts(struct xgbe_prv_data *pdata) +{ + /* Set all the function pointers */ + xgbe_init_all_fptrs(pdata); + + /* Populate the hardware features */ + xgbe_get_all_hw_features(pdata); + + /* Set default max values if not provided */ + if (!pdata->tx_max_channel_count) + pdata->tx_max_channel_count = pdata->hw_feat.tx_ch_cnt; + if (!pdata->rx_max_channel_count) + pdata->rx_max_channel_count = pdata->hw_feat.rx_ch_cnt; + + if (!pdata->tx_max_q_count) + pdata->tx_max_q_count = pdata->hw_feat.tx_q_cnt; + if (!pdata->rx_max_q_count) + pdata->rx_max_q_count = pdata->hw_feat.rx_q_cnt; + + /* Calculate the number of Tx and Rx rings to be created + * -Tx (DMA) Channels map 1-to-1 to Tx Queues so set + * the number of Tx queues to the number of Tx channels + * enabled + * -Rx (DMA) Channels do not map 1-to-1 so use the actual + * number of Rx queues or maximum allowed + */ + pdata->tx_ring_count = min_t(unsigned int, num_online_cpus(), + pdata->hw_feat.tx_ch_cnt); + pdata->tx_ring_count = min_t(unsigned int, pdata->tx_ring_count, + pdata->tx_max_channel_count); + pdata->tx_ring_count = min_t(unsigned int, pdata->tx_ring_count, + pdata->tx_max_q_count); + + pdata->tx_q_count = pdata->tx_ring_count; + + pdata->rx_ring_count = min_t(unsigned int, num_online_cpus(), + pdata->hw_feat.rx_ch_cnt); + pdata->rx_ring_count = min_t(unsigned int, pdata->rx_ring_count, + pdata->rx_max_channel_count); + + pdata->rx_q_count = min_t(unsigned int, pdata->hw_feat.rx_q_cnt, + pdata->rx_max_q_count); + + if (netif_msg_probe(pdata)) { + dev_dbg(pdata->dev, "TX/RX DMA channel count = %u/%u\n", + pdata->tx_ring_count, pdata->rx_ring_count); + dev_dbg(pdata->dev, "TX/RX hardware queue count = %u/%u\n", + pdata->tx_q_count, pdata->rx_q_count); + } +} + +int xgbe_config_netdev(struct xgbe_prv_data *pdata) +{ + struct net_device *netdev = pdata->netdev; + struct device *dev = pdata->dev; + int ret; + + netdev->irq = pdata->dev_irq; + netdev->base_addr = (unsigned long)pdata->xgmac_regs; + eth_hw_addr_set(netdev, pdata->mac_addr); + + /* Initialize ECC timestamps */ + pdata->tx_sec_period = jiffies; + pdata->tx_ded_period = jiffies; + pdata->rx_sec_period = jiffies; + pdata->rx_ded_period = jiffies; + pdata->desc_sec_period = jiffies; + pdata->desc_ded_period = jiffies; + + /* Issue software reset to device */ + ret = pdata->hw_if.exit(pdata); + if (ret) { + dev_err(dev, "software reset failed\n"); + return ret; + } + + /* Set default configuration data */ + xgbe_default_config(pdata); + + /* Set the DMA mask */ + ret = dma_set_mask_and_coherent(dev, + DMA_BIT_MASK(pdata->hw_feat.dma_width)); + if (ret) { + dev_err(dev, "dma_set_mask_and_coherent failed\n"); + return ret; + } + + /* Set default max values if not provided */ + if (!pdata->tx_max_fifo_size) + pdata->tx_max_fifo_size = pdata->hw_feat.tx_fifo_size; + if (!pdata->rx_max_fifo_size) + pdata->rx_max_fifo_size = pdata->hw_feat.rx_fifo_size; + + /* Set and validate the number of descriptors for a ring */ + BUILD_BUG_ON_NOT_POWER_OF_2(XGBE_TX_DESC_CNT); + pdata->tx_desc_count = XGBE_TX_DESC_CNT; + + BUILD_BUG_ON_NOT_POWER_OF_2(XGBE_RX_DESC_CNT); + pdata->rx_desc_count = XGBE_RX_DESC_CNT; + + /* Adjust the number of queues based on interrupts assigned */ + if (pdata->channel_irq_count) { + pdata->tx_ring_count = min_t(unsigned int, pdata->tx_ring_count, + pdata->channel_irq_count); + pdata->rx_ring_count = min_t(unsigned int, pdata->rx_ring_count, + pdata->channel_irq_count); + + if (netif_msg_probe(pdata)) + dev_dbg(pdata->dev, + "adjusted TX/RX DMA channel count = %u/%u\n", + pdata->tx_ring_count, pdata->rx_ring_count); + } + + /* Initialize RSS hash key */ + netdev_rss_key_fill(pdata->rss_key, sizeof(pdata->rss_key)); + + XGMAC_SET_BITS(pdata->rss_options, MAC_RSSCR, IP2TE, 1); + XGMAC_SET_BITS(pdata->rss_options, MAC_RSSCR, TCP4TE, 1); + XGMAC_SET_BITS(pdata->rss_options, MAC_RSSCR, UDP4TE, 1); + + /* Call MDIO/PHY initialization routine */ + pdata->debugfs_an_cdr_workaround = pdata->vdata->an_cdr_workaround; + ret = pdata->phy_if.phy_init(pdata); + if (ret) + return ret; + + /* Set device operations */ + netdev->netdev_ops = xgbe_get_netdev_ops(); + netdev->ethtool_ops = xgbe_get_ethtool_ops(); +#ifdef CONFIG_AMD_XGBE_DCB + netdev->dcbnl_ops = xgbe_get_dcbnl_ops(); +#endif + + /* Set device features */ + netdev->hw_features = NETIF_F_SG | + NETIF_F_IP_CSUM | + NETIF_F_IPV6_CSUM | + NETIF_F_RXCSUM | + NETIF_F_TSO | + NETIF_F_TSO6 | + NETIF_F_GRO | + NETIF_F_HW_VLAN_CTAG_RX | + NETIF_F_HW_VLAN_CTAG_TX | + NETIF_F_HW_VLAN_CTAG_FILTER; + + if (pdata->hw_feat.rss) + netdev->hw_features |= NETIF_F_RXHASH; + + if (pdata->hw_feat.vxn) { + netdev->hw_enc_features = NETIF_F_SG | + NETIF_F_IP_CSUM | + NETIF_F_IPV6_CSUM | + NETIF_F_RXCSUM | + NETIF_F_TSO | + NETIF_F_TSO6 | + NETIF_F_GRO | + NETIF_F_GSO_UDP_TUNNEL | + NETIF_F_GSO_UDP_TUNNEL_CSUM; + + netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL | + NETIF_F_GSO_UDP_TUNNEL_CSUM; + + netdev->udp_tunnel_nic_info = xgbe_get_udp_tunnel_info(); + } + + netdev->vlan_features |= NETIF_F_SG | + NETIF_F_IP_CSUM | + NETIF_F_IPV6_CSUM | + NETIF_F_TSO | + NETIF_F_TSO6; + + netdev->features |= netdev->hw_features; + pdata->netdev_features = netdev->features; + + netdev->priv_flags |= IFF_UNICAST_FLT; + netdev->min_mtu = 0; + netdev->max_mtu = XGMAC_JUMBO_PACKET_MTU; + + /* Use default watchdog timeout */ + netdev->watchdog_timeo = 0; + + xgbe_init_rx_coalesce(pdata); + xgbe_init_tx_coalesce(pdata); + + netif_carrier_off(netdev); + ret = register_netdev(netdev); + if (ret) { + dev_err(dev, "net device registration failed\n"); + return ret; + } + + if (IS_REACHABLE(CONFIG_PTP_1588_CLOCK)) + xgbe_ptp_register(pdata); + + xgbe_debugfs_init(pdata); + + netif_dbg(pdata, drv, pdata->netdev, "%u Tx software queues\n", + pdata->tx_ring_count); + netif_dbg(pdata, drv, pdata->netdev, "%u Rx software queues\n", + pdata->rx_ring_count); + + return 0; +} + +void xgbe_deconfig_netdev(struct xgbe_prv_data *pdata) +{ + struct net_device *netdev = pdata->netdev; + + xgbe_debugfs_exit(pdata); + + if (IS_REACHABLE(CONFIG_PTP_1588_CLOCK)) + xgbe_ptp_unregister(pdata); + + unregister_netdev(netdev); + + pdata->phy_if.phy_exit(pdata); +} + +static int xgbe_netdev_event(struct notifier_block *nb, unsigned long event, + void *data) +{ + struct net_device *netdev = netdev_notifier_info_to_dev(data); + struct xgbe_prv_data *pdata = netdev_priv(netdev); + + if (netdev->netdev_ops != xgbe_get_netdev_ops()) + goto out; + + switch (event) { + case NETDEV_CHANGENAME: + xgbe_debugfs_rename(pdata); + break; + + default: + break; + } + +out: + return NOTIFY_DONE; +} + +static struct notifier_block xgbe_netdev_notifier = { + .notifier_call = xgbe_netdev_event, +}; + +static int __init xgbe_mod_init(void) +{ + int ret; + + ret = register_netdevice_notifier(&xgbe_netdev_notifier); + if (ret) + return ret; + + ret = xgbe_platform_init(); + if (ret) + goto err_platform_init; + + ret = xgbe_pci_init(); + if (ret) + goto err_pci_init; + + return 0; + +err_pci_init: + xgbe_platform_exit(); +err_platform_init: + unregister_netdevice_notifier(&xgbe_netdev_notifier); + return ret; +} + +static void __exit xgbe_mod_exit(void) +{ + xgbe_pci_exit(); + + xgbe_platform_exit(); + + unregister_netdevice_notifier(&xgbe_netdev_notifier); +} + +module_init(xgbe_mod_init); +module_exit(xgbe_mod_exit); -- cgit v1.2.3