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/i2c/auxg94.c | 194 +++++++++++++++++++++++ 1 file changed, 194 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxg94.c (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxg94.c') diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxg94.c b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxg94.c new file mode 100644 index 000000000..47068f6f9 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxg94.c @@ -0,0 +1,194 @@ +/* + * Copyright 2015 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 busions 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 + */ +#define g94_i2c_aux(p) container_of((p), struct g94_i2c_aux, base) +#include "aux.h" + +struct g94_i2c_aux { + struct nvkm_i2c_aux base; + int ch; +}; + +static void +g94_i2c_aux_fini(struct g94_i2c_aux *aux) +{ + struct nvkm_device *device = aux->base.pad->i2c->subdev.device; + nvkm_mask(device, 0x00e4e4 + (aux->ch * 0x50), 0x00310000, 0x00000000); +} + +static int +g94_i2c_aux_init(struct g94_i2c_aux *aux) +{ + struct nvkm_device *device = aux->base.pad->i2c->subdev.device; + const u32 unksel = 1; /* nfi which to use, or if it matters.. */ + const u32 ureq = unksel ? 0x00100000 : 0x00200000; + const u32 urep = unksel ? 0x01000000 : 0x02000000; + u32 ctrl, timeout; + + /* wait up to 1ms for any previous transaction to be done... */ + timeout = 1000; + do { + ctrl = nvkm_rd32(device, 0x00e4e4 + (aux->ch * 0x50)); + udelay(1); + if (!timeout--) { + AUX_ERR(&aux->base, "begin idle timeout %08x", ctrl); + return -EBUSY; + } + } while (ctrl & 0x03010000); + + /* set some magic, and wait up to 1ms for it to appear */ + nvkm_mask(device, 0x00e4e4 + (aux->ch * 0x50), 0x00300000, ureq); + timeout = 1000; + do { + ctrl = nvkm_rd32(device, 0x00e4e4 + (aux->ch * 0x50)); + udelay(1); + if (!timeout--) { + AUX_ERR(&aux->base, "magic wait %08x", ctrl); + g94_i2c_aux_fini(aux); + return -EBUSY; + } + } while ((ctrl & 0x03000000) != urep); + + return 0; +} + +int +g94_i2c_aux_xfer(struct nvkm_i2c_aux *obj, bool retry, + u8 type, u32 addr, u8 *data, u8 *size) +{ + struct g94_i2c_aux *aux = g94_i2c_aux(obj); + struct nvkm_i2c *i2c = aux->base.pad->i2c; + struct nvkm_device *device = i2c->subdev.device; + const u32 base = aux->ch * 0x50; + u32 ctrl, stat, timeout, retries = 0; + u32 xbuf[4] = {}; + int ret, i; + + AUX_TRACE(&aux->base, "%d: %08x %d", type, addr, *size); + + ret = g94_i2c_aux_init(aux); + if (ret < 0) + goto out; + + stat = nvkm_rd32(device, 0x00e4e8 + base); + if (!(stat & 0x10000000)) { + AUX_TRACE(&aux->base, "sink not detected"); + ret = -ENXIO; + goto out; + } + + nvkm_i2c_aux_autodpcd(i2c, aux->ch, false); + + if (!(type & 1)) { + memcpy(xbuf, data, *size); + for (i = 0; i < 16; i += 4) { + AUX_TRACE(&aux->base, "wr %08x", xbuf[i / 4]); + nvkm_wr32(device, 0x00e4c0 + base + i, xbuf[i / 4]); + } + } + + ctrl = nvkm_rd32(device, 0x00e4e4 + base); + ctrl &= ~0x0001f1ff; + ctrl |= type << 12; + ctrl |= (*size ? (*size - 1) : 0x00000100); + nvkm_wr32(device, 0x00e4e0 + base, addr); + + /* (maybe) retry transaction a number of times on failure... */ + do { + /* reset, and delay a while if this is a retry */ + nvkm_wr32(device, 0x00e4e4 + base, 0x80000000 | ctrl); + nvkm_wr32(device, 0x00e4e4 + base, 0x00000000 | ctrl); + if (retries) + udelay(400); + + /* transaction request, wait up to 2ms for it to complete */ + nvkm_wr32(device, 0x00e4e4 + base, 0x00010000 | ctrl); + + timeout = 2000; + do { + ctrl = nvkm_rd32(device, 0x00e4e4 + base); + udelay(1); + if (!timeout--) { + AUX_ERR(&aux->base, "timeout %08x", ctrl); + ret = -EIO; + goto out_err; + } + } while (ctrl & 0x00010000); + ret = 0; + + /* read status, and check if transaction completed ok */ + stat = nvkm_mask(device, 0x00e4e8 + base, 0, 0); + if ((stat & 0x000f0000) == 0x00080000 || + (stat & 0x000f0000) == 0x00020000) + ret = 1; + if ((stat & 0x00000100)) + ret = -ETIMEDOUT; + if ((stat & 0x00000e00)) + ret = -EIO; + + AUX_TRACE(&aux->base, "%02d %08x %08x", retries, ctrl, stat); + } while (ret && retry && retries++ < 32); + + if (type & 1) { + for (i = 0; i < 16; i += 4) { + xbuf[i / 4] = nvkm_rd32(device, 0x00e4d0 + base + i); + AUX_TRACE(&aux->base, "rd %08x", xbuf[i / 4]); + } + memcpy(data, xbuf, *size); + *size = stat & 0x0000001f; + } +out_err: + nvkm_i2c_aux_autodpcd(i2c, aux->ch, true); +out: + g94_i2c_aux_fini(aux); + return ret < 0 ? ret : (stat & 0x000f0000) >> 16; +} + +int +g94_i2c_aux_new_(const struct nvkm_i2c_aux_func *func, + struct nvkm_i2c_pad *pad, int index, u8 drive, + struct nvkm_i2c_aux **paux) +{ + struct g94_i2c_aux *aux; + + if (!(aux = kzalloc(sizeof(*aux), GFP_KERNEL))) + return -ENOMEM; + *paux = &aux->base; + + nvkm_i2c_aux_ctor(func, pad, index, &aux->base); + aux->ch = drive; + aux->base.intr = 1 << aux->ch; + return 0; +} + +static const struct nvkm_i2c_aux_func +g94_i2c_aux = { + .xfer = g94_i2c_aux_xfer, +}; + +int +g94_i2c_aux_new(struct nvkm_i2c_pad *pad, int index, u8 drive, + struct nvkm_i2c_aux **paux) +{ + return g94_i2c_aux_new_(&g94_i2c_aux, pad, index, drive, paux); +} -- cgit v1.2.3