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/engine/fifo/nv50.c | 398 ++++++++++++++++++++++++ 1 file changed, 398 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv50.c (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv50.c') diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv50.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv50.c new file mode 100644 index 000000000..954b5f3a7 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/nv50.c @@ -0,0 +1,398 @@ +/* + * 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 "cgrp.h" +#include "chan.h" +#include "chid.h" +#include "runl.h" + +#include +#include + +#include + +void +nv50_eobj_ramht_del(struct nvkm_chan *chan, int hash) +{ + nvkm_ramht_remove(chan->ramht, hash); +} + +int +nv50_eobj_ramht_add(struct nvkm_engn *engn, struct nvkm_object *eobj, struct nvkm_chan *chan) +{ + return nvkm_ramht_insert(chan->ramht, eobj, 0, 4, eobj->handle, engn->id << 20); +} + +void +nv50_chan_stop(struct nvkm_chan *chan) +{ + struct nvkm_device *device = chan->cgrp->runl->fifo->engine.subdev.device; + + nvkm_mask(device, 0x002600 + (chan->id * 4), 0x80000000, 0x00000000); +} + +void +nv50_chan_start(struct nvkm_chan *chan) +{ + struct nvkm_device *device = chan->cgrp->runl->fifo->engine.subdev.device; + + nvkm_mask(device, 0x002600 + (chan->id * 4), 0x80000000, 0x80000000); +} + +void +nv50_chan_unbind(struct nvkm_chan *chan) +{ + struct nvkm_device *device = chan->cgrp->runl->fifo->engine.subdev.device; + + nvkm_wr32(device, 0x002600 + (chan->id * 4), 0x00000000); +} + +static void +nv50_chan_bind(struct nvkm_chan *chan) +{ + struct nvkm_device *device = chan->cgrp->runl->fifo->engine.subdev.device; + + nvkm_wr32(device, 0x002600 + (chan->id * 4), chan->ramfc->addr >> 12); +} + +static int +nv50_chan_ramfc_write(struct nvkm_chan *chan, u64 offset, u64 length, u32 devm, bool priv) +{ + struct nvkm_device *device = chan->cgrp->runl->fifo->engine.subdev.device; + const u32 limit2 = ilog2(length / 8); + int ret; + + ret = nvkm_gpuobj_new(device, 0x0200, 0x1000, true, chan->inst, &chan->ramfc); + if (ret) + return ret; + + ret = nvkm_gpuobj_new(device, 0x1200, 0, true, chan->inst, &chan->eng); + if (ret) + return ret; + + ret = nvkm_gpuobj_new(device, 0x4000, 0, false, chan->inst, &chan->pgd); + if (ret) + return ret; + + ret = nvkm_ramht_new(device, 0x8000, 16, chan->inst, &chan->ramht); + if (ret) + return ret; + + nvkm_kmap(chan->ramfc); + nvkm_wo32(chan->ramfc, 0x3c, 0x403f6078); + nvkm_wo32(chan->ramfc, 0x44, 0x01003fff); + nvkm_wo32(chan->ramfc, 0x48, chan->push->node->offset >> 4); + nvkm_wo32(chan->ramfc, 0x50, lower_32_bits(offset)); + nvkm_wo32(chan->ramfc, 0x54, upper_32_bits(offset) | (limit2 << 16)); + nvkm_wo32(chan->ramfc, 0x60, 0x7fffffff); + nvkm_wo32(chan->ramfc, 0x78, 0x00000000); + nvkm_wo32(chan->ramfc, 0x7c, 0x30000000 | devm); + nvkm_wo32(chan->ramfc, 0x80, ((chan->ramht->bits - 9) << 27) | + (4 << 24) /* SEARCH_FULL */ | + (chan->ramht->gpuobj->node->offset >> 4)); + nvkm_done(chan->ramfc); + return 0; +} + +static const struct nvkm_chan_func_ramfc +nv50_chan_ramfc = { + .write = nv50_chan_ramfc_write, + .ctxdma = true, + .devm = 0xfff, +}; + +const struct nvkm_chan_func_userd +nv50_chan_userd = { + .bar = 0, + .base = 0xc00000, + .size = 0x002000, +}; + +const struct nvkm_chan_func_inst +nv50_chan_inst = { + .size = 0x10000, + .vmm = true, +}; + +static const struct nvkm_chan_func +nv50_chan = { + .inst = &nv50_chan_inst, + .userd = &nv50_chan_userd, + .ramfc = &nv50_chan_ramfc, + .bind = nv50_chan_bind, + .unbind = nv50_chan_unbind, + .start = nv50_chan_start, + .stop = nv50_chan_stop, +}; + +static void +nv50_ectx_bind(struct nvkm_engn *engn, struct nvkm_cctx *cctx, struct nvkm_chan *chan) +{ + struct nvkm_subdev *subdev = &chan->cgrp->runl->fifo->engine.subdev; + struct nvkm_device *device = subdev->device; + u64 start = 0, limit = 0; + u32 flags = 0, ptr0, save; + + switch (engn->engine->subdev.type) { + case NVKM_ENGINE_GR : ptr0 = 0x0000; break; + case NVKM_ENGINE_MPEG : ptr0 = 0x0060; break; + default: + WARN_ON(1); + return; + } + + if (!cctx) { + /* HW bug workaround: + * + * PFIFO will hang forever if the connected engines don't report + * that they've processed the context switch request. + * + * In order for the kickoff to work, we need to ensure all the + * connected engines are in a state where they can answer. + * + * Newer chipsets don't seem to suffer from this issue, and well, + * there's also a "ignore these engines" bitmask reg we can use + * if we hit the issue there.. + */ + save = nvkm_mask(device, 0x00b860, 0x00000001, 0x00000001); + + /* Tell engines to save out contexts. */ + nvkm_wr32(device, 0x0032fc, chan->inst->addr >> 12); + nvkm_msec(device, 2000, + if (nvkm_rd32(device, 0x0032fc) != 0xffffffff) + break; + ); + nvkm_wr32(device, 0x00b860, save); + } else { + flags = 0x00190000; + start = cctx->vctx->inst->addr; + limit = start + cctx->vctx->inst->size - 1; + } + + nvkm_kmap(chan->eng); + nvkm_wo32(chan->eng, ptr0 + 0x00, flags); + nvkm_wo32(chan->eng, ptr0 + 0x04, lower_32_bits(limit)); + nvkm_wo32(chan->eng, ptr0 + 0x08, lower_32_bits(start)); + nvkm_wo32(chan->eng, ptr0 + 0x0c, upper_32_bits(limit) << 24 | + lower_32_bits(start)); + nvkm_wo32(chan->eng, ptr0 + 0x10, 0x00000000); + nvkm_wo32(chan->eng, ptr0 + 0x14, 0x00000000); + nvkm_done(chan->eng); +} + +static const struct nvkm_engn_func +nv50_engn = { + .bind = nv50_ectx_bind, + .ramht_add = nv50_eobj_ramht_add, + .ramht_del = nv50_eobj_ramht_del, +}; + +const struct nvkm_engn_func +nv50_engn_sw = { + .ramht_add = nv50_eobj_ramht_add, + .ramht_del = nv50_eobj_ramht_del, +}; + +static bool +nv50_runl_pending(struct nvkm_runl *runl) +{ + return nvkm_rd32(runl->fifo->engine.subdev.device, 0x0032ec) & 0x00000100; +} + +int +nv50_runl_wait(struct nvkm_runl *runl) +{ + struct nvkm_fifo *fifo = runl->fifo; + + nvkm_msec(fifo->engine.subdev.device, fifo->timeout.chan_msec, + if (!nvkm_runl_update_pending(runl)) + return 0; + usleep_range(1, 2); + ); + + return -ETIMEDOUT; +} + +static void +nv50_runl_commit(struct nvkm_runl *runl, struct nvkm_memory *memory, u32 start, int count) +{ + struct nvkm_device *device = runl->fifo->engine.subdev.device; + u64 addr = nvkm_memory_addr(memory) + start; + + nvkm_wr32(device, 0x0032f4, addr >> 12); + nvkm_wr32(device, 0x0032ec, count); +} + +static void +nv50_runl_insert_chan(struct nvkm_chan *chan, struct nvkm_memory *memory, u64 offset) +{ + nvkm_wo32(memory, offset, chan->id); +} + +static struct nvkm_memory * +nv50_runl_alloc(struct nvkm_runl *runl, u32 *offset) +{ + const u32 segment = ALIGN((runl->cgrp_nr + runl->chan_nr) * runl->func->size, 0x1000); + const u32 maxsize = (runl->cgid ? runl->cgid->nr : 0) + runl->chid->nr; + int ret; + + if (unlikely(!runl->mem)) { + ret = nvkm_memory_new(runl->fifo->engine.subdev.device, NVKM_MEM_TARGET_INST, + maxsize * 2 * runl->func->size, 0, false, &runl->mem); + if (ret) { + RUNL_ERROR(runl, "alloc %d\n", ret); + return ERR_PTR(ret); + } + } else { + if (runl->offset + segment >= nvkm_memory_size(runl->mem)) { + ret = runl->func->wait(runl); + if (ret) { + RUNL_DEBUG(runl, "rewind timeout"); + return ERR_PTR(ret); + } + + runl->offset = 0; + } + } + + *offset = runl->offset; + runl->offset += segment; + return runl->mem; +} + +int +nv50_runl_update(struct nvkm_runl *runl) +{ + struct nvkm_memory *memory; + struct nvkm_cgrp *cgrp; + struct nvkm_chan *chan; + u32 start, offset, count; + + /*TODO: prio, interleaving. */ + + RUNL_TRACE(runl, "RAMRL: update cgrps:%d chans:%d", runl->cgrp_nr, runl->chan_nr); + memory = nv50_runl_alloc(runl, &start); + if (IS_ERR(memory)) + return PTR_ERR(memory); + + RUNL_TRACE(runl, "RAMRL: update start:%08x", start); + offset = start; + + nvkm_kmap(memory); + nvkm_runl_foreach_cgrp(cgrp, runl) { + if (cgrp->hw) { + CGRP_TRACE(cgrp, " RAMRL+%08x: chans:%d", offset, cgrp->chan_nr); + runl->func->insert_cgrp(cgrp, memory, offset); + offset += runl->func->size; + } + + nvkm_cgrp_foreach_chan(chan, cgrp) { + CHAN_TRACE(chan, "RAMRL+%08x: [%s]", offset, chan->name); + runl->func->insert_chan(chan, memory, offset); + offset += runl->func->size; + } + } + nvkm_done(memory); + + /*TODO: look into using features on newer HW to guarantee forward progress. */ + list_rotate_left(&runl->cgrps); + + count = (offset - start) / runl->func->size; + RUNL_TRACE(runl, "RAMRL: commit start:%08x count:%d", start, count); + + runl->func->commit(runl, memory, start, count); + return 0; +} + +const struct nvkm_runl_func +nv50_runl = { + .size = 4, + .update = nv50_runl_update, + .insert_chan = nv50_runl_insert_chan, + .commit = nv50_runl_commit, + .wait = nv50_runl_wait, + .pending = nv50_runl_pending, +}; + +void +nv50_fifo_init(struct nvkm_fifo *fifo) +{ + struct nvkm_runl *runl = nvkm_runl_first(fifo); + struct nvkm_device *device = fifo->engine.subdev.device; + int i; + + nvkm_mask(device, 0x000200, 0x00000100, 0x00000000); + nvkm_mask(device, 0x000200, 0x00000100, 0x00000100); + nvkm_wr32(device, 0x00250c, 0x6f3cfc34); + nvkm_wr32(device, 0x002044, 0x01003fff); + + nvkm_wr32(device, 0x002100, 0xffffffff); + nvkm_wr32(device, 0x002140, 0xbfffffff); + + for (i = 0; i < 128; i++) + nvkm_wr32(device, 0x002600 + (i * 4), 0x00000000); + + atomic_set(&runl->changed, 1); + runl->func->update(runl); + + nvkm_wr32(device, 0x003200, 0x00000001); + nvkm_wr32(device, 0x003250, 0x00000001); + nvkm_wr32(device, 0x002500, 0x00000001); +} + +int +nv50_fifo_chid_ctor(struct nvkm_fifo *fifo, int nr) +{ + /* CHID 0 is unusable (some kind of PIO channel?), 127 is "channel invalid". */ + return nvkm_chid_new(&nvkm_chan_event, &fifo->engine.subdev, nr, 1, nr - 2, &fifo->chid); +} + +int +nv50_fifo_chid_nr(struct nvkm_fifo *fifo) +{ + return 128; +} + +static const struct nvkm_fifo_func +nv50_fifo = { + .chid_nr = nv50_fifo_chid_nr, + .chid_ctor = nv50_fifo_chid_ctor, + .runl_ctor = nv04_fifo_runl_ctor, + .init = nv50_fifo_init, + .intr = nv04_fifo_intr, + .pause = nv04_fifo_pause, + .start = nv04_fifo_start, + .runl = &nv50_runl, + .engn = &nv50_engn, + .engn_sw = &nv50_engn_sw, + .cgrp = {{ }, &nv04_cgrp }, + .chan = {{ 0, 0, NV50_CHANNEL_GPFIFO }, &nv50_chan }, +}; + +int +nv50_fifo_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, + struct nvkm_fifo **pfifo) +{ + return nvkm_fifo_new_(&nv50_fifo, device, type, inst, pfifo); +} -- cgit v1.2.3