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(). ... --- .../cavium-octeon/executive/cvmx-helper-sgmii.c | 515 +++++++++++++++++++++ 1 file changed, 515 insertions(+) create mode 100644 arch/mips/cavium-octeon/executive/cvmx-helper-sgmii.c (limited to 'arch/mips/cavium-octeon/executive/cvmx-helper-sgmii.c') diff --git a/arch/mips/cavium-octeon/executive/cvmx-helper-sgmii.c b/arch/mips/cavium-octeon/executive/cvmx-helper-sgmii.c new file mode 100644 index 000000000..e07d8f15e --- /dev/null +++ b/arch/mips/cavium-octeon/executive/cvmx-helper-sgmii.c @@ -0,0 +1,515 @@ +/***********************license start*************** + * Author: Cavium Networks + * + * Contact: support@caviumnetworks.com + * This file is part of the OCTEON SDK + * + * Copyright (C) 2003-2018 Cavium, Inc. + * + * This file is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License, Version 2, as + * published by the Free Software Foundation. + * + * This file is distributed in the hope that it will be useful, but + * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or + * NONINFRINGEMENT. See the GNU General Public License for more + * details. + * + * You should have received a copy of the GNU General Public License + * along with this file; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * or visit http://www.gnu.org/licenses/. + * + * This file may also be available under a different license from Cavium. + * Contact Cavium Networks for more information + ***********************license end**************************************/ + +/* + * Functions for SGMII initialization, configuration, + * and monitoring. + */ + +#include + +#include + +#include +#include + +#include +#include +#include + +/** + * Perform initialization required only once for an SGMII port. + * + * @interface: Interface to init + * @index: Index of prot on the interface + * + * Returns Zero on success, negative on failure + */ +static int __cvmx_helper_sgmii_hardware_init_one_time(int interface, int index) +{ + const uint64_t clock_mhz = cvmx_sysinfo_get()->cpu_clock_hz / 1000000; + union cvmx_pcsx_miscx_ctl_reg pcs_misc_ctl_reg; + union cvmx_pcsx_linkx_timer_count_reg pcsx_linkx_timer_count_reg; + union cvmx_gmxx_prtx_cfg gmxx_prtx_cfg; + + /* Disable GMX */ + gmxx_prtx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); + gmxx_prtx_cfg.s.en = 0; + cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmxx_prtx_cfg.u64); + + /* + * Write PCS*_LINK*_TIMER_COUNT_REG[COUNT] with the + * appropriate value. 1000BASE-X specifies a 10ms + * interval. SGMII specifies a 1.6ms interval. + */ + pcs_misc_ctl_reg.u64 = + cvmx_read_csr(CVMX_PCSX_MISCX_CTL_REG(index, interface)); + pcsx_linkx_timer_count_reg.u64 = + cvmx_read_csr(CVMX_PCSX_LINKX_TIMER_COUNT_REG(index, interface)); + if (pcs_misc_ctl_reg.s.mode) { + /* 1000BASE-X */ + pcsx_linkx_timer_count_reg.s.count = + (10000ull * clock_mhz) >> 10; + } else { + /* SGMII */ + pcsx_linkx_timer_count_reg.s.count = + (1600ull * clock_mhz) >> 10; + } + cvmx_write_csr(CVMX_PCSX_LINKX_TIMER_COUNT_REG(index, interface), + pcsx_linkx_timer_count_reg.u64); + + /* + * Write the advertisement register to be used as the + * tx_Config_Reg of the autonegotiation. In + * 1000BASE-X mode, tx_Config_Reg is PCS*_AN*_ADV_REG. + * In SGMII PHY mode, tx_Config_Reg is + * PCS*_SGM*_AN_ADV_REG. In SGMII MAC mode, + * tx_Config_Reg is the fixed value 0x4001, so this + * step can be skipped. + */ + if (pcs_misc_ctl_reg.s.mode) { + /* 1000BASE-X */ + union cvmx_pcsx_anx_adv_reg pcsx_anx_adv_reg; + pcsx_anx_adv_reg.u64 = + cvmx_read_csr(CVMX_PCSX_ANX_ADV_REG(index, interface)); + pcsx_anx_adv_reg.s.rem_flt = 0; + pcsx_anx_adv_reg.s.pause = 3; + pcsx_anx_adv_reg.s.hfd = 1; + pcsx_anx_adv_reg.s.fd = 1; + cvmx_write_csr(CVMX_PCSX_ANX_ADV_REG(index, interface), + pcsx_anx_adv_reg.u64); + } else { + union cvmx_pcsx_miscx_ctl_reg pcsx_miscx_ctl_reg; + pcsx_miscx_ctl_reg.u64 = + cvmx_read_csr(CVMX_PCSX_MISCX_CTL_REG(index, interface)); + if (pcsx_miscx_ctl_reg.s.mac_phy) { + /* PHY Mode */ + union cvmx_pcsx_sgmx_an_adv_reg pcsx_sgmx_an_adv_reg; + pcsx_sgmx_an_adv_reg.u64 = + cvmx_read_csr(CVMX_PCSX_SGMX_AN_ADV_REG + (index, interface)); + pcsx_sgmx_an_adv_reg.s.link = 1; + pcsx_sgmx_an_adv_reg.s.dup = 1; + pcsx_sgmx_an_adv_reg.s.speed = 2; + cvmx_write_csr(CVMX_PCSX_SGMX_AN_ADV_REG + (index, interface), + pcsx_sgmx_an_adv_reg.u64); + } else { + /* MAC Mode - Nothing to do */ + } + } + return 0; +} + +/** + * Initialize the SERTES link for the first time or after a loss + * of link. + * + * @interface: Interface to init + * @index: Index of prot on the interface + * + * Returns Zero on success, negative on failure + */ +static int __cvmx_helper_sgmii_hardware_init_link(int interface, int index) +{ + union cvmx_pcsx_mrx_control_reg control_reg; + + /* + * Take PCS through a reset sequence. + * PCS*_MR*_CONTROL_REG[PWR_DN] should be cleared to zero. + * Write PCS*_MR*_CONTROL_REG[RESET]=1 (while not changing the + * value of the other PCS*_MR*_CONTROL_REG bits). Read + * PCS*_MR*_CONTROL_REG[RESET] until it changes value to + * zero. + */ + control_reg.u64 = + cvmx_read_csr(CVMX_PCSX_MRX_CONTROL_REG(index, interface)); + if (cvmx_sysinfo_get()->board_type != CVMX_BOARD_TYPE_SIM) { + control_reg.s.reset = 1; + cvmx_write_csr(CVMX_PCSX_MRX_CONTROL_REG(index, interface), + control_reg.u64); + if (CVMX_WAIT_FOR_FIELD64 + (CVMX_PCSX_MRX_CONTROL_REG(index, interface), + union cvmx_pcsx_mrx_control_reg, reset, ==, 0, 10000)) { + cvmx_dprintf("SGMII%d: Timeout waiting for port %d " + "to finish reset\n", + interface, index); + return -1; + } + } + + /* + * Write PCS*_MR*_CONTROL_REG[RST_AN]=1 to ensure a fresh + * sgmii negotiation starts. + */ + control_reg.s.rst_an = 1; + control_reg.s.an_en = 1; + control_reg.s.pwr_dn = 0; + cvmx_write_csr(CVMX_PCSX_MRX_CONTROL_REG(index, interface), + control_reg.u64); + + /* + * Wait for PCS*_MR*_STATUS_REG[AN_CPT] to be set, indicating + * that sgmii autonegotiation is complete. In MAC mode this + * isn't an ethernet link, but a link between Octeon and the + * PHY. + */ + if ((cvmx_sysinfo_get()->board_type != CVMX_BOARD_TYPE_SIM) && + CVMX_WAIT_FOR_FIELD64(CVMX_PCSX_MRX_STATUS_REG(index, interface), + union cvmx_pcsx_mrx_status_reg, an_cpt, ==, 1, + 10000)) { + /* cvmx_dprintf("SGMII%d: Port %d link timeout\n", interface, index); */ + return -1; + } + return 0; +} + +/** + * Configure an SGMII link to the specified speed after the SERTES + * link is up. + * + * @interface: Interface to init + * @index: Index of prot on the interface + * @link_info: Link state to configure + * + * Returns Zero on success, negative on failure + */ +static int __cvmx_helper_sgmii_hardware_init_link_speed(int interface, + int index, + union cvmx_helper_link_info + link_info) +{ + int is_enabled; + union cvmx_gmxx_prtx_cfg gmxx_prtx_cfg; + union cvmx_pcsx_miscx_ctl_reg pcsx_miscx_ctl_reg; + + /* Disable GMX before we make any changes. Remember the enable state */ + gmxx_prtx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); + is_enabled = gmxx_prtx_cfg.s.en; + gmxx_prtx_cfg.s.en = 0; + cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmxx_prtx_cfg.u64); + + /* Wait for GMX to be idle */ + if (CVMX_WAIT_FOR_FIELD64 + (CVMX_GMXX_PRTX_CFG(index, interface), union cvmx_gmxx_prtx_cfg, + rx_idle, ==, 1, 10000) + || CVMX_WAIT_FOR_FIELD64(CVMX_GMXX_PRTX_CFG(index, interface), + union cvmx_gmxx_prtx_cfg, tx_idle, ==, 1, + 10000)) { + cvmx_dprintf + ("SGMII%d: Timeout waiting for port %d to be idle\n", + interface, index); + return -1; + } + + /* Read GMX CFG again to make sure the disable completed */ + gmxx_prtx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); + + /* + * Get the misc control for PCS. We will need to set the + * duplication amount. + */ + pcsx_miscx_ctl_reg.u64 = + cvmx_read_csr(CVMX_PCSX_MISCX_CTL_REG(index, interface)); + + /* + * Use GMXENO to force the link down if the status we get says + * it should be down. + */ + pcsx_miscx_ctl_reg.s.gmxeno = !link_info.s.link_up; + + /* Only change the duplex setting if the link is up */ + if (link_info.s.link_up) + gmxx_prtx_cfg.s.duplex = link_info.s.full_duplex; + + /* Do speed based setting for GMX */ + switch (link_info.s.speed) { + case 10: + gmxx_prtx_cfg.s.speed = 0; + gmxx_prtx_cfg.s.speed_msb = 1; + gmxx_prtx_cfg.s.slottime = 0; + /* Setting from GMX-603 */ + pcsx_miscx_ctl_reg.s.samp_pt = 25; + cvmx_write_csr(CVMX_GMXX_TXX_SLOT(index, interface), 64); + cvmx_write_csr(CVMX_GMXX_TXX_BURST(index, interface), 0); + break; + case 100: + gmxx_prtx_cfg.s.speed = 0; + gmxx_prtx_cfg.s.speed_msb = 0; + gmxx_prtx_cfg.s.slottime = 0; + pcsx_miscx_ctl_reg.s.samp_pt = 0x5; + cvmx_write_csr(CVMX_GMXX_TXX_SLOT(index, interface), 64); + cvmx_write_csr(CVMX_GMXX_TXX_BURST(index, interface), 0); + break; + case 1000: + gmxx_prtx_cfg.s.speed = 1; + gmxx_prtx_cfg.s.speed_msb = 0; + gmxx_prtx_cfg.s.slottime = 1; + pcsx_miscx_ctl_reg.s.samp_pt = 1; + cvmx_write_csr(CVMX_GMXX_TXX_SLOT(index, interface), 512); + cvmx_write_csr(CVMX_GMXX_TXX_BURST(index, interface), 8192); + break; + default: + break; + } + + /* Write the new misc control for PCS */ + cvmx_write_csr(CVMX_PCSX_MISCX_CTL_REG(index, interface), + pcsx_miscx_ctl_reg.u64); + + /* Write the new GMX settings with the port still disabled */ + cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmxx_prtx_cfg.u64); + + /* Read GMX CFG again to make sure the config completed */ + gmxx_prtx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); + + /* Restore the enabled / disabled state */ + gmxx_prtx_cfg.s.en = is_enabled; + cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmxx_prtx_cfg.u64); + + return 0; +} + +/** + * Bring up the SGMII interface to be ready for packet I/O but + * leave I/O disabled using the GMX override. This function + * follows the bringup documented in 10.6.3 of the manual. + * + * @interface: Interface to bringup + * @num_ports: Number of ports on the interface + * + * Returns Zero on success, negative on failure + */ +static int __cvmx_helper_sgmii_hardware_init(int interface, int num_ports) +{ + int index; + + __cvmx_helper_setup_gmx(interface, num_ports); + + for (index = 0; index < num_ports; index++) { + int ipd_port = cvmx_helper_get_ipd_port(interface, index); + __cvmx_helper_sgmii_hardware_init_one_time(interface, index); + /* Linux kernel driver will call ....link_set with the + * proper link state. In the simulator there is no + * link state polling and hence it is set from + * here. + */ + if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_SIM) + __cvmx_helper_sgmii_link_set(ipd_port, + __cvmx_helper_sgmii_link_get(ipd_port)); + } + + return 0; +} + +int __cvmx_helper_sgmii_enumerate(int interface) +{ + return 4; +} +/** + * Probe a SGMII interface and determine the number of ports + * connected to it. The SGMII interface should still be down after + * this call. + * + * @interface: Interface to probe + * + * Returns Number of ports on the interface. Zero to disable. + */ +int __cvmx_helper_sgmii_probe(int interface) +{ + union cvmx_gmxx_inf_mode mode; + + /* + * Due to errata GMX-700 on CN56XXp1.x and CN52XXp1.x, the + * interface needs to be enabled before IPD otherwise per port + * backpressure may not work properly + */ + mode.u64 = cvmx_read_csr(CVMX_GMXX_INF_MODE(interface)); + mode.s.en = 1; + cvmx_write_csr(CVMX_GMXX_INF_MODE(interface), mode.u64); + return __cvmx_helper_sgmii_enumerate(interface); +} + +/** + * Bringup and enable a SGMII interface. After this call packet + * I/O should be fully functional. This is called with IPD + * enabled but PKO disabled. + * + * @interface: Interface to bring up + * + * Returns Zero on success, negative on failure + */ +int __cvmx_helper_sgmii_enable(int interface) +{ + int num_ports = cvmx_helper_ports_on_interface(interface); + int index; + + __cvmx_helper_sgmii_hardware_init(interface, num_ports); + + for (index = 0; index < num_ports; index++) { + union cvmx_gmxx_prtx_cfg gmxx_prtx_cfg; + gmxx_prtx_cfg.u64 = + cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); + gmxx_prtx_cfg.s.en = 1; + cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), + gmxx_prtx_cfg.u64); + __cvmx_interrupt_pcsx_intx_en_reg_enable(index, interface); + } + __cvmx_interrupt_pcsxx_int_en_reg_enable(interface); + __cvmx_interrupt_gmxx_enable(interface); + return 0; +} + +/** + * Return the link state of an IPD/PKO port as returned by + * auto negotiation. The result of this function may not match + * Octeon's link config if auto negotiation has changed since + * the last call to cvmx_helper_link_set(). + * + * @ipd_port: IPD/PKO port to query + * + * Returns Link state + */ +union cvmx_helper_link_info __cvmx_helper_sgmii_link_get(int ipd_port) +{ + union cvmx_helper_link_info result; + union cvmx_pcsx_miscx_ctl_reg pcs_misc_ctl_reg; + int interface = cvmx_helper_get_interface_num(ipd_port); + int index = cvmx_helper_get_interface_index_num(ipd_port); + union cvmx_pcsx_mrx_control_reg pcsx_mrx_control_reg; + + result.u64 = 0; + + if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_SIM) { + /* The simulator gives you a simulated 1Gbps full duplex link */ + result.s.link_up = 1; + result.s.full_duplex = 1; + result.s.speed = 1000; + return result; + } + + pcsx_mrx_control_reg.u64 = + cvmx_read_csr(CVMX_PCSX_MRX_CONTROL_REG(index, interface)); + if (pcsx_mrx_control_reg.s.loopbck1) { + /* Force 1Gbps full duplex link for internal loopback */ + result.s.link_up = 1; + result.s.full_duplex = 1; + result.s.speed = 1000; + return result; + } + + pcs_misc_ctl_reg.u64 = + cvmx_read_csr(CVMX_PCSX_MISCX_CTL_REG(index, interface)); + if (pcs_misc_ctl_reg.s.mode) { + /* 1000BASE-X */ + /* FIXME */ + } else { + union cvmx_pcsx_miscx_ctl_reg pcsx_miscx_ctl_reg; + pcsx_miscx_ctl_reg.u64 = + cvmx_read_csr(CVMX_PCSX_MISCX_CTL_REG(index, interface)); + if (pcsx_miscx_ctl_reg.s.mac_phy) { + /* PHY Mode */ + union cvmx_pcsx_mrx_status_reg pcsx_mrx_status_reg; + union cvmx_pcsx_anx_results_reg pcsx_anx_results_reg; + + /* + * Don't bother continuing if the SERTES low + * level link is down + */ + pcsx_mrx_status_reg.u64 = + cvmx_read_csr(CVMX_PCSX_MRX_STATUS_REG + (index, interface)); + if (pcsx_mrx_status_reg.s.lnk_st == 0) { + if (__cvmx_helper_sgmii_hardware_init_link + (interface, index) != 0) + return result; + } + + /* Read the autoneg results */ + pcsx_anx_results_reg.u64 = + cvmx_read_csr(CVMX_PCSX_ANX_RESULTS_REG + (index, interface)); + if (pcsx_anx_results_reg.s.an_cpt) { + /* + * Auto negotiation is complete. Set + * status accordingly. + */ + result.s.full_duplex = + pcsx_anx_results_reg.s.dup; + result.s.link_up = + pcsx_anx_results_reg.s.link_ok; + switch (pcsx_anx_results_reg.s.spd) { + case 0: + result.s.speed = 10; + break; + case 1: + result.s.speed = 100; + break; + case 2: + result.s.speed = 1000; + break; + default: + result.s.speed = 0; + result.s.link_up = 0; + break; + } + } else { + /* + * Auto negotiation isn't + * complete. Return link down. + */ + result.s.speed = 0; + result.s.link_up = 0; + } + } else { /* MAC Mode */ + + result = __cvmx_helper_board_link_get(ipd_port); + } + } + return result; +} + +/** + * Configure an IPD/PKO port for the specified link state. This + * function does not influence auto negotiation at the PHY level. + * The passed link state must always match the link state returned + * by cvmx_helper_link_get(). + * + * @ipd_port: IPD/PKO port to configure + * @link_info: The new link state + * + * Returns Zero on success, negative on failure + */ +int __cvmx_helper_sgmii_link_set(int ipd_port, + union cvmx_helper_link_info link_info) +{ + int interface = cvmx_helper_get_interface_num(ipd_port); + int index = cvmx_helper_get_interface_index_num(ipd_port); + __cvmx_helper_sgmii_hardware_init_link(interface, index); + return __cvmx_helper_sgmii_hardware_init_link_speed(interface, index, + link_info); +} -- cgit v1.2.3