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(). ... --- arch/powerpc/platforms/cell/spider-pci.c | 171 +++++++++++++++++++++++++++++++ 1 file changed, 171 insertions(+) create mode 100644 arch/powerpc/platforms/cell/spider-pci.c (limited to 'arch/powerpc/platforms/cell/spider-pci.c') diff --git a/arch/powerpc/platforms/cell/spider-pci.c b/arch/powerpc/platforms/cell/spider-pci.c new file mode 100644 index 000000000..e36ebd84f --- /dev/null +++ b/arch/powerpc/platforms/cell/spider-pci.c @@ -0,0 +1,171 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * IO workarounds for PCI on Celleb/Cell platform + * + * (C) Copyright 2006-2007 TOSHIBA CORPORATION + */ + +#undef DEBUG + +#include +#include +#include +#include +#include + +#include +#include +#include + +#define SPIDER_PCI_DISABLE_PREFETCH + +struct spiderpci_iowa_private { + void __iomem *regs; +}; + +static void spiderpci_io_flush(struct iowa_bus *bus) +{ + struct spiderpci_iowa_private *priv; + + priv = bus->private; + in_be32(priv->regs + SPIDER_PCI_DUMMY_READ); + iosync(); +} + +#define SPIDER_PCI_MMIO_READ(name, ret) \ +static ret spiderpci_##name(const PCI_IO_ADDR addr) \ +{ \ + ret val = __do_##name(addr); \ + spiderpci_io_flush(iowa_mem_find_bus(addr)); \ + return val; \ +} + +#define SPIDER_PCI_MMIO_READ_STR(name) \ +static void spiderpci_##name(const PCI_IO_ADDR addr, void *buf, \ + unsigned long count) \ +{ \ + __do_##name(addr, buf, count); \ + spiderpci_io_flush(iowa_mem_find_bus(addr)); \ +} + +SPIDER_PCI_MMIO_READ(readb, u8) +SPIDER_PCI_MMIO_READ(readw, u16) +SPIDER_PCI_MMIO_READ(readl, u32) +SPIDER_PCI_MMIO_READ(readq, u64) +SPIDER_PCI_MMIO_READ(readw_be, u16) +SPIDER_PCI_MMIO_READ(readl_be, u32) +SPIDER_PCI_MMIO_READ(readq_be, u64) +SPIDER_PCI_MMIO_READ_STR(readsb) +SPIDER_PCI_MMIO_READ_STR(readsw) +SPIDER_PCI_MMIO_READ_STR(readsl) + +static void spiderpci_memcpy_fromio(void *dest, const PCI_IO_ADDR src, + unsigned long n) +{ + __do_memcpy_fromio(dest, src, n); + spiderpci_io_flush(iowa_mem_find_bus(src)); +} + +static int __init spiderpci_pci_setup_chip(struct pci_controller *phb, + void __iomem *regs) +{ + void *dummy_page_va; + dma_addr_t dummy_page_da; + +#ifdef SPIDER_PCI_DISABLE_PREFETCH + u32 val = in_be32(regs + SPIDER_PCI_VCI_CNTL_STAT); + pr_debug("SPIDER_IOWA:PVCI_Control_Status was 0x%08x\n", val); + out_be32(regs + SPIDER_PCI_VCI_CNTL_STAT, val | 0x8); +#endif /* SPIDER_PCI_DISABLE_PREFETCH */ + + /* setup dummy read */ + /* + * On CellBlade, we can't know that which XDR memory is used by + * kmalloc() to allocate dummy_page_va. + * In order to improve the performance, the XDR which is used to + * allocate dummy_page_va is the nearest the spider-pci. + * We have to select the CBE which is the nearest the spider-pci + * to allocate memory from the best XDR, but I don't know that + * how to do. + * + * Celleb does not have this problem, because it has only one XDR. + */ + dummy_page_va = kmalloc(PAGE_SIZE, GFP_KERNEL); + if (!dummy_page_va) { + pr_err("SPIDERPCI-IOWA:Alloc dummy_page_va failed.\n"); + return -1; + } + + dummy_page_da = dma_map_single(phb->parent, dummy_page_va, + PAGE_SIZE, DMA_FROM_DEVICE); + if (dma_mapping_error(phb->parent, dummy_page_da)) { + pr_err("SPIDER-IOWA:Map dummy page filed.\n"); + kfree(dummy_page_va); + return -1; + } + + out_be32(regs + SPIDER_PCI_DUMMY_READ_BASE, dummy_page_da); + + return 0; +} + +int __init spiderpci_iowa_init(struct iowa_bus *bus, void *data) +{ + void __iomem *regs = NULL; + struct spiderpci_iowa_private *priv; + struct device_node *np = bus->phb->dn; + struct resource r; + unsigned long offset = (unsigned long)data; + + pr_debug("SPIDERPCI-IOWA:Bus initialize for spider(%pOF)\n", + np); + + priv = kzalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) { + pr_err("SPIDERPCI-IOWA:" + "Can't allocate struct spiderpci_iowa_private"); + return -1; + } + + if (of_address_to_resource(np, 0, &r)) { + pr_err("SPIDERPCI-IOWA:Can't get resource.\n"); + goto error; + } + + regs = ioremap(r.start + offset, SPIDER_PCI_REG_SIZE); + if (!regs) { + pr_err("SPIDERPCI-IOWA:ioremap failed.\n"); + goto error; + } + priv->regs = regs; + bus->private = priv; + + if (spiderpci_pci_setup_chip(bus->phb, regs)) + goto error; + + return 0; + +error: + kfree(priv); + bus->private = NULL; + + if (regs) + iounmap(regs); + + return -1; +} + +struct ppc_pci_io spiderpci_ops = { + .readb = spiderpci_readb, + .readw = spiderpci_readw, + .readl = spiderpci_readl, + .readq = spiderpci_readq, + .readw_be = spiderpci_readw_be, + .readl_be = spiderpci_readl_be, + .readq_be = spiderpci_readq_be, + .readsb = spiderpci_readsb, + .readsw = spiderpci_readsw, + .readsl = spiderpci_readsl, + .memcpy_fromio = spiderpci_memcpy_fromio, +}; + -- cgit v1.2.3