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/char/agp/alpha-agp.c | 220 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 220 insertions(+) create mode 100644 drivers/char/agp/alpha-agp.c (limited to 'drivers/char/agp/alpha-agp.c') diff --git a/drivers/char/agp/alpha-agp.c b/drivers/char/agp/alpha-agp.c new file mode 100644 index 000000000..c9bf2c219 --- /dev/null +++ b/drivers/char/agp/alpha-agp.c @@ -0,0 +1,220 @@ +#include +#include +#include +#include +#include +#include + +#include +#include +#include "../../../arch/alpha/kernel/pci_impl.h" + +#include "agp.h" + +static vm_fault_t alpha_core_agp_vm_fault(struct vm_fault *vmf) +{ + alpha_agp_info *agp = agp_bridge->dev_private_data; + dma_addr_t dma_addr; + unsigned long pa; + struct page *page; + + dma_addr = vmf->address - vmf->vma->vm_start + agp->aperture.bus_base; + pa = agp->ops->translate(agp, dma_addr); + + if (pa == (unsigned long)-EINVAL) + return VM_FAULT_SIGBUS; /* no translation */ + + /* + * Get the page, inc the use count, and return it + */ + page = virt_to_page(__va(pa)); + get_page(page); + vmf->page = page; + return 0; +} + +static struct aper_size_info_fixed alpha_core_agp_sizes[] = +{ + { 0, 0, 0 }, /* filled in by alpha_core_agp_setup */ +}; + +static const struct vm_operations_struct alpha_core_agp_vm_ops = { + .fault = alpha_core_agp_vm_fault, +}; + + +static int alpha_core_agp_fetch_size(void) +{ + return alpha_core_agp_sizes[0].size; +} + +static int alpha_core_agp_configure(void) +{ + alpha_agp_info *agp = agp_bridge->dev_private_data; + agp_bridge->gart_bus_addr = agp->aperture.bus_base; + return 0; +} + +static void alpha_core_agp_cleanup(void) +{ + alpha_agp_info *agp = agp_bridge->dev_private_data; + + agp->ops->cleanup(agp); +} + +static void alpha_core_agp_tlbflush(struct agp_memory *mem) +{ + alpha_agp_info *agp = agp_bridge->dev_private_data; + alpha_mv.mv_pci_tbi(agp->hose, 0, -1); +} + +static void alpha_core_agp_enable(struct agp_bridge_data *bridge, u32 mode) +{ + alpha_agp_info *agp = bridge->dev_private_data; + + agp->mode.lw = agp_collect_device_status(bridge, mode, + agp->capability.lw); + + agp->mode.bits.enable = 1; + agp->ops->configure(agp); + + agp_device_command(agp->mode.lw, false); +} + +static int alpha_core_agp_insert_memory(struct agp_memory *mem, off_t pg_start, + int type) +{ + alpha_agp_info *agp = agp_bridge->dev_private_data; + int num_entries, status; + void *temp; + + if (type >= AGP_USER_TYPES || mem->type >= AGP_USER_TYPES) + return -EINVAL; + + temp = agp_bridge->current_size; + num_entries = A_SIZE_FIX(temp)->num_entries; + if ((pg_start + mem->page_count) > num_entries) + return -EINVAL; + + status = agp->ops->bind(agp, pg_start, mem); + mb(); + alpha_core_agp_tlbflush(mem); + + return status; +} + +static int alpha_core_agp_remove_memory(struct agp_memory *mem, off_t pg_start, + int type) +{ + alpha_agp_info *agp = agp_bridge->dev_private_data; + int status; + + status = agp->ops->unbind(agp, pg_start, mem); + alpha_core_agp_tlbflush(mem); + return status; +} + +static int alpha_core_agp_create_free_gatt_table(struct agp_bridge_data *a) +{ + return 0; +} + +struct agp_bridge_driver alpha_core_agp_driver = { + .owner = THIS_MODULE, + .aperture_sizes = alpha_core_agp_sizes, + .num_aperture_sizes = 1, + .size_type = FIXED_APER_SIZE, + .cant_use_aperture = true, + .masks = NULL, + + .fetch_size = alpha_core_agp_fetch_size, + .configure = alpha_core_agp_configure, + .agp_enable = alpha_core_agp_enable, + .cleanup = alpha_core_agp_cleanup, + .tlb_flush = alpha_core_agp_tlbflush, + .mask_memory = agp_generic_mask_memory, + .cache_flush = global_cache_flush, + .create_gatt_table = alpha_core_agp_create_free_gatt_table, + .free_gatt_table = alpha_core_agp_create_free_gatt_table, + .insert_memory = alpha_core_agp_insert_memory, + .remove_memory = alpha_core_agp_remove_memory, + .alloc_by_type = agp_generic_alloc_by_type, + .free_by_type = agp_generic_free_by_type, + .agp_alloc_page = agp_generic_alloc_page, + .agp_alloc_pages = agp_generic_alloc_pages, + .agp_destroy_page = agp_generic_destroy_page, + .agp_destroy_pages = agp_generic_destroy_pages, + .agp_type_to_mask_type = agp_generic_type_to_mask_type, +}; + +struct agp_bridge_data *alpha_bridge; + +int __init +alpha_core_agp_setup(void) +{ + alpha_agp_info *agp = alpha_mv.agp_info(); + struct pci_dev *pdev; /* faked */ + struct aper_size_info_fixed *aper_size; + + if (!agp) + return -ENODEV; + if (agp->ops->setup(agp)) + return -ENODEV; + + /* + * Build the aperture size descriptor + */ + aper_size = alpha_core_agp_sizes; + aper_size->size = agp->aperture.size / (1024 * 1024); + aper_size->num_entries = agp->aperture.size / PAGE_SIZE; + aper_size->page_order = __ffs(aper_size->num_entries / 1024); + + /* + * Build a fake pci_dev struct + */ + pdev = pci_alloc_dev(NULL); + if (!pdev) + return -ENOMEM; + pdev->vendor = 0xffff; + pdev->device = 0xffff; + pdev->sysdata = agp->hose; + + alpha_bridge = agp_alloc_bridge(); + if (!alpha_bridge) + goto fail; + + alpha_bridge->driver = &alpha_core_agp_driver; + alpha_bridge->vm_ops = &alpha_core_agp_vm_ops; + alpha_bridge->current_size = aper_size; /* only 1 size */ + alpha_bridge->dev_private_data = agp; + alpha_bridge->dev = pdev; + alpha_bridge->mode = agp->capability.lw; + + printk(KERN_INFO PFX "Detected AGP on hose %d\n", agp->hose->index); + return agp_add_bridge(alpha_bridge); + + fail: + kfree(pdev); + return -ENOMEM; +} + +static int __init agp_alpha_core_init(void) +{ + if (agp_off) + return -EINVAL; + if (alpha_mv.agp_info) + return alpha_core_agp_setup(); + return -ENODEV; +} + +static void __exit agp_alpha_core_cleanup(void) +{ + agp_remove_bridge(alpha_bridge); + agp_put_bridge(alpha_bridge); +} + +module_init(agp_alpha_core_init); +module_exit(agp_alpha_core_cleanup); + +MODULE_AUTHOR("Jeff Wiedemeier "); +MODULE_LICENSE("GPL and additional rights"); -- cgit v1.2.3