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/gpu/drm/nouveau/nvkm/subdev/instmem/base.c | 258 +++++++++++++++++++++ 1 file changed, 258 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/instmem/base.c (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/instmem/base.c') diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/base.c new file mode 100644 index 000000000..e0e4f97be --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/base.c @@ -0,0 +1,258 @@ +/* + * Copyright 2012 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (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. + * + * 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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. + * + * Authors: Ben Skeggs + */ +#include "priv.h" + +#include + +/****************************************************************************** + * instmem object base implementation + *****************************************************************************/ +static void +nvkm_instobj_load(struct nvkm_instobj *iobj) +{ + struct nvkm_memory *memory = &iobj->memory; + const u64 size = nvkm_memory_size(memory); + void __iomem *map; + int i; + + if (!(map = nvkm_kmap(memory))) { + for (i = 0; i < size; i += 4) + nvkm_wo32(memory, i, iobj->suspend[i / 4]); + } else { + memcpy_toio(map, iobj->suspend, size); + } + nvkm_done(memory); + + kvfree(iobj->suspend); + iobj->suspend = NULL; +} + +static int +nvkm_instobj_save(struct nvkm_instobj *iobj) +{ + struct nvkm_memory *memory = &iobj->memory; + const u64 size = nvkm_memory_size(memory); + void __iomem *map; + int i; + + iobj->suspend = kvmalloc(size, GFP_KERNEL); + if (!iobj->suspend) + return -ENOMEM; + + if (!(map = nvkm_kmap(memory))) { + for (i = 0; i < size; i += 4) + iobj->suspend[i / 4] = nvkm_ro32(memory, i); + } else { + memcpy_fromio(iobj->suspend, map, size); + } + nvkm_done(memory); + return 0; +} + +void +nvkm_instobj_dtor(struct nvkm_instmem *imem, struct nvkm_instobj *iobj) +{ + spin_lock(&imem->lock); + list_del(&iobj->head); + spin_unlock(&imem->lock); +} + +void +nvkm_instobj_ctor(const struct nvkm_memory_func *func, + struct nvkm_instmem *imem, struct nvkm_instobj *iobj) +{ + nvkm_memory_ctor(func, &iobj->memory); + iobj->suspend = NULL; + spin_lock(&imem->lock); + list_add_tail(&iobj->head, &imem->list); + spin_unlock(&imem->lock); +} + +int +nvkm_instobj_wrap(struct nvkm_device *device, + struct nvkm_memory *memory, struct nvkm_memory **pmemory) +{ + struct nvkm_instmem *imem = device->imem; + + if (!imem->func->memory_wrap) + return -ENOSYS; + + return imem->func->memory_wrap(imem, memory, pmemory); +} + +int +nvkm_instobj_new(struct nvkm_instmem *imem, u32 size, u32 align, bool zero, + struct nvkm_memory **pmemory) +{ + struct nvkm_subdev *subdev = &imem->subdev; + struct nvkm_memory *memory = NULL; + u32 offset; + int ret; + + ret = imem->func->memory_new(imem, size, align, zero, &memory); + if (ret) { + nvkm_error(subdev, "OOM: %08x %08x %d\n", size, align, ret); + goto done; + } + + nvkm_trace(subdev, "new %08x %08x %d: %010llx %010llx\n", size, align, + zero, nvkm_memory_addr(memory), nvkm_memory_size(memory)); + + if (!imem->func->zero && zero) { + void __iomem *map = nvkm_kmap(memory); + if (unlikely(!map)) { + for (offset = 0; offset < size; offset += 4) + nvkm_wo32(memory, offset, 0x00000000); + } else { + memset_io(map, 0x00, size); + } + nvkm_done(memory); + } + +done: + if (ret) + nvkm_memory_unref(&memory); + *pmemory = memory; + return ret; +} + +/****************************************************************************** + * instmem subdev base implementation + *****************************************************************************/ + +u32 +nvkm_instmem_rd32(struct nvkm_instmem *imem, u32 addr) +{ + return imem->func->rd32(imem, addr); +} + +void +nvkm_instmem_wr32(struct nvkm_instmem *imem, u32 addr, u32 data) +{ + return imem->func->wr32(imem, addr, data); +} + +void +nvkm_instmem_boot(struct nvkm_instmem *imem) +{ + /* Separate bootstrapped objects from normal list, as we need + * to make sure they're accessed with the slowpath on suspend + * and resume. + */ + struct nvkm_instobj *iobj, *itmp; + spin_lock(&imem->lock); + list_for_each_entry_safe(iobj, itmp, &imem->list, head) { + list_move_tail(&iobj->head, &imem->boot); + } + spin_unlock(&imem->lock); +} + +static int +nvkm_instmem_fini(struct nvkm_subdev *subdev, bool suspend) +{ + struct nvkm_instmem *imem = nvkm_instmem(subdev); + struct nvkm_instobj *iobj; + + if (suspend) { + list_for_each_entry(iobj, &imem->list, head) { + int ret = nvkm_instobj_save(iobj); + if (ret) + return ret; + } + + nvkm_bar_bar2_fini(subdev->device); + + list_for_each_entry(iobj, &imem->boot, head) { + int ret = nvkm_instobj_save(iobj); + if (ret) + return ret; + } + } + + if (imem->func->fini) + imem->func->fini(imem); + + return 0; +} + +static int +nvkm_instmem_init(struct nvkm_subdev *subdev) +{ + struct nvkm_instmem *imem = nvkm_instmem(subdev); + struct nvkm_instobj *iobj; + + list_for_each_entry(iobj, &imem->boot, head) { + if (iobj->suspend) + nvkm_instobj_load(iobj); + } + + nvkm_bar_bar2_init(subdev->device); + + list_for_each_entry(iobj, &imem->list, head) { + if (iobj->suspend) + nvkm_instobj_load(iobj); + } + + return 0; +} + +static int +nvkm_instmem_oneinit(struct nvkm_subdev *subdev) +{ + struct nvkm_instmem *imem = nvkm_instmem(subdev); + if (imem->func->oneinit) + return imem->func->oneinit(imem); + return 0; +} + +static void * +nvkm_instmem_dtor(struct nvkm_subdev *subdev) +{ + struct nvkm_instmem *imem = nvkm_instmem(subdev); + void *data = imem; + if (imem->func->dtor) + data = imem->func->dtor(imem); + mutex_destroy(&imem->mutex); + return data; +} + +static const struct nvkm_subdev_func +nvkm_instmem = { + .dtor = nvkm_instmem_dtor, + .oneinit = nvkm_instmem_oneinit, + .init = nvkm_instmem_init, + .fini = nvkm_instmem_fini, +}; + +void +nvkm_instmem_ctor(const struct nvkm_instmem_func *func, struct nvkm_device *device, + enum nvkm_subdev_type type, int inst, struct nvkm_instmem *imem) +{ + nvkm_subdev_ctor(&nvkm_instmem, device, type, inst, &imem->subdev); + imem->func = func; + spin_lock_init(&imem->lock); + INIT_LIST_HEAD(&imem->list); + INIT_LIST_HEAD(&imem->boot); + mutex_init(&imem->mutex); +} -- cgit v1.2.3