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/boot/devtree.c | 377 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 377 insertions(+) create mode 100644 arch/powerpc/boot/devtree.c (limited to 'arch/powerpc/boot/devtree.c') diff --git a/arch/powerpc/boot/devtree.c b/arch/powerpc/boot/devtree.c new file mode 100644 index 000000000..58fbcfcc9 --- /dev/null +++ b/arch/powerpc/boot/devtree.c @@ -0,0 +1,377 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * devtree.c - convenience functions for device tree manipulation + * Copyright 2007 David Gibson, IBM Corporation. + * Copyright (c) 2007 Freescale Semiconductor, Inc. + * + * Authors: David Gibson + * Scott Wood + */ +#include +#include +#include "types.h" +#include "string.h" +#include "stdio.h" +#include "ops.h" +#include "of.h" + +void dt_fixup_memory(u64 start, u64 size) +{ + void *root, *memory; + int naddr, nsize, i; + u32 memreg[4]; + + root = finddevice("/"); + if (getprop(root, "#address-cells", &naddr, sizeof(naddr)) < 0) + naddr = 2; + else + naddr = be32_to_cpu(naddr); + if (naddr < 1 || naddr > 2) + fatal("Can't cope with #address-cells == %d in /\n\r", naddr); + + if (getprop(root, "#size-cells", &nsize, sizeof(nsize)) < 0) + nsize = 1; + else + nsize = be32_to_cpu(nsize); + if (nsize < 1 || nsize > 2) + fatal("Can't cope with #size-cells == %d in /\n\r", nsize); + + i = 0; + if (naddr == 2) + memreg[i++] = cpu_to_be32(start >> 32); + memreg[i++] = cpu_to_be32(start & 0xffffffff); + if (nsize == 2) + memreg[i++] = cpu_to_be32(size >> 32); + memreg[i++] = cpu_to_be32(size & 0xffffffff); + + memory = finddevice("/memory"); + if (! memory) { + memory = create_node(NULL, "memory"); + setprop_str(memory, "device_type", "memory"); + } + + printf("Memory <- <0x%x", be32_to_cpu(memreg[0])); + for (i = 1; i < (naddr + nsize); i++) + printf(" 0x%x", be32_to_cpu(memreg[i])); + printf("> (%ldMB)\n\r", (unsigned long)(size >> 20)); + + setprop(memory, "reg", memreg, (naddr + nsize)*sizeof(u32)); +} + +#define MHZ(x) ((x + 500000) / 1000000) + +void dt_fixup_cpu_clocks(u32 cpu, u32 tb, u32 bus) +{ + void *devp = NULL; + + printf("CPU clock-frequency <- 0x%x (%dMHz)\n\r", cpu, MHZ(cpu)); + printf("CPU timebase-frequency <- 0x%x (%dMHz)\n\r", tb, MHZ(tb)); + if (bus > 0) + printf("CPU bus-frequency <- 0x%x (%dMHz)\n\r", bus, MHZ(bus)); + + while ((devp = find_node_by_devtype(devp, "cpu"))) { + setprop_val(devp, "clock-frequency", cpu_to_be32(cpu)); + setprop_val(devp, "timebase-frequency", cpu_to_be32(tb)); + if (bus > 0) + setprop_val(devp, "bus-frequency", cpu_to_be32(bus)); + } + + timebase_period_ns = 1000000000 / tb; +} + +void dt_fixup_clock(const char *path, u32 freq) +{ + void *devp = finddevice(path); + + if (devp) { + printf("%s: clock-frequency <- %x (%dMHz)\n\r", path, freq, MHZ(freq)); + setprop_val(devp, "clock-frequency", cpu_to_be32(freq)); + } +} + +void dt_fixup_mac_address_by_alias(const char *alias, const u8 *addr) +{ + void *devp = find_node_by_alias(alias); + + if (devp) { + printf("%s: local-mac-address <-" + " %02x:%02x:%02x:%02x:%02x:%02x\n\r", alias, + addr[0], addr[1], addr[2], + addr[3], addr[4], addr[5]); + + setprop(devp, "local-mac-address", addr, 6); + } +} + +void dt_fixup_mac_address(u32 index, const u8 *addr) +{ + void *devp = find_node_by_prop_value(NULL, "linux,network-index", + (void*)&index, sizeof(index)); + + if (devp) { + printf("ENET%d: local-mac-address <-" + " %02x:%02x:%02x:%02x:%02x:%02x\n\r", index, + addr[0], addr[1], addr[2], + addr[3], addr[4], addr[5]); + + setprop(devp, "local-mac-address", addr, 6); + } +} + +void __dt_fixup_mac_addresses(u32 startindex, ...) +{ + va_list ap; + u32 index = startindex; + const u8 *addr; + + va_start(ap, startindex); + + while ((addr = va_arg(ap, const u8 *))) + dt_fixup_mac_address(index++, addr); + + va_end(ap); +} + +#define MAX_ADDR_CELLS 4 + +void dt_get_reg_format(void *node, u32 *naddr, u32 *nsize) +{ + if (getprop(node, "#address-cells", naddr, 4) != 4) + *naddr = 2; + else + *naddr = be32_to_cpu(*naddr); + if (getprop(node, "#size-cells", nsize, 4) != 4) + *nsize = 1; + else + *nsize = be32_to_cpu(*nsize); +} + +static void copy_val(u32 *dest, u32 *src, int naddr) +{ + int pad = MAX_ADDR_CELLS - naddr; + + memset(dest, 0, pad * 4); + memcpy(dest + pad, src, naddr * 4); +} + +static int sub_reg(u32 *reg, u32 *sub) +{ + int i, borrow = 0; + + for (i = MAX_ADDR_CELLS - 1; i >= 0; i--) { + int prev_borrow = borrow; + borrow = reg[i] < sub[i] + prev_borrow; + reg[i] -= sub[i] + prev_borrow; + } + + return !borrow; +} + +static int add_reg(u32 *reg, u32 *add, int naddr) +{ + int i, carry = 0; + + for (i = MAX_ADDR_CELLS - 1; i >= MAX_ADDR_CELLS - naddr; i--) { + u64 tmp = (u64)be32_to_cpu(reg[i]) + be32_to_cpu(add[i]) + carry; + carry = tmp >> 32; + reg[i] = cpu_to_be32((u32)tmp); + } + + return !carry; +} + +/* It is assumed that if the first byte of reg fits in a + * range, then the whole reg block fits. + */ +static int compare_reg(u32 *reg, u32 *range, u32 *rangesize) +{ + int i; + u32 end; + + for (i = 0; i < MAX_ADDR_CELLS; i++) { + if (be32_to_cpu(reg[i]) < be32_to_cpu(range[i])) + return 0; + if (be32_to_cpu(reg[i]) > be32_to_cpu(range[i])) + break; + } + + for (i = 0; i < MAX_ADDR_CELLS; i++) { + end = be32_to_cpu(range[i]) + be32_to_cpu(rangesize[i]); + + if (be32_to_cpu(reg[i]) < end) + break; + if (be32_to_cpu(reg[i]) > end) + return 0; + } + + return reg[i] != end; +} + +/* reg must be MAX_ADDR_CELLS */ +static int find_range(u32 *reg, u32 *ranges, int nregaddr, + int naddr, int nsize, int buflen) +{ + int nrange = nregaddr + naddr + nsize; + int i; + + for (i = 0; i + nrange <= buflen; i += nrange) { + u32 range_addr[MAX_ADDR_CELLS]; + u32 range_size[MAX_ADDR_CELLS]; + + copy_val(range_addr, ranges + i, nregaddr); + copy_val(range_size, ranges + i + nregaddr + naddr, nsize); + + if (compare_reg(reg, range_addr, range_size)) + return i; + } + + return -1; +} + +/* Currently only generic buses without special encodings are supported. + * In particular, PCI is not supported. Also, only the beginning of the + * reg block is tracked; size is ignored except in ranges. + */ +static u32 prop_buf[MAX_PROP_LEN / 4]; + +static int dt_xlate(void *node, int res, int reglen, unsigned long *addr, + unsigned long *size) +{ + u32 last_addr[MAX_ADDR_CELLS]; + u32 this_addr[MAX_ADDR_CELLS]; + void *parent; + u64 ret_addr, ret_size; + u32 naddr, nsize, prev_naddr, prev_nsize; + int buflen, offset; + + parent = get_parent(node); + if (!parent) + return 0; + + dt_get_reg_format(parent, &naddr, &nsize); + if (nsize > 2) + return 0; + + offset = (naddr + nsize) * res; + + if (reglen < offset + naddr + nsize || + MAX_PROP_LEN < (offset + naddr + nsize) * 4) + return 0; + + copy_val(last_addr, prop_buf + offset, naddr); + + ret_size = be32_to_cpu(prop_buf[offset + naddr]); + if (nsize == 2) { + ret_size <<= 32; + ret_size |= be32_to_cpu(prop_buf[offset + naddr + 1]); + } + + for (;;) { + prev_naddr = naddr; + prev_nsize = nsize; + node = parent; + + parent = get_parent(node); + if (!parent) + break; + + dt_get_reg_format(parent, &naddr, &nsize); + + buflen = getprop(node, "ranges", prop_buf, + sizeof(prop_buf)); + if (buflen == 0) + continue; + if (buflen < 0 || buflen > sizeof(prop_buf)) + return 0; + + offset = find_range(last_addr, prop_buf, prev_naddr, + naddr, prev_nsize, buflen / 4); + if (offset < 0) + return 0; + + copy_val(this_addr, prop_buf + offset, prev_naddr); + + if (!sub_reg(last_addr, this_addr)) + return 0; + + copy_val(this_addr, prop_buf + offset + prev_naddr, naddr); + + if (!add_reg(last_addr, this_addr, naddr)) + return 0; + } + + if (naddr > 2) + return 0; + + ret_addr = ((u64)be32_to_cpu(last_addr[2]) << 32) | be32_to_cpu(last_addr[3]); + if (sizeof(void *) == 4 && + (ret_addr >= 0x100000000ULL || ret_size > 0x100000000ULL || + ret_addr + ret_size > 0x100000000ULL)) + return 0; + + *addr = ret_addr; + if (size) + *size = ret_size; + + return 1; +} + +int dt_xlate_reg(void *node, int res, unsigned long *addr, unsigned long *size) +{ + int reglen; + + reglen = getprop(node, "reg", prop_buf, sizeof(prop_buf)) / 4; + return dt_xlate(node, res, reglen, addr, size); +} + +int dt_xlate_addr(void *node, u32 *buf, int buflen, unsigned long *xlated_addr) +{ + + if (buflen > sizeof(prop_buf)) + return 0; + + memcpy(prop_buf, buf, buflen); + return dt_xlate(node, 0, buflen / 4, xlated_addr, NULL); +} + +int dt_is_compatible(void *node, const char *compat) +{ + char *buf = (char *)prop_buf; + int len, pos; + + len = getprop(node, "compatible", buf, MAX_PROP_LEN); + if (len < 0) + return 0; + + for (pos = 0; pos < len; pos++) { + if (!strcmp(buf + pos, compat)) + return 1; + + pos += strnlen(&buf[pos], len - pos); + } + + return 0; +} + +int dt_get_virtual_reg(void *node, void **addr, int nres) +{ + unsigned long xaddr; + int n, i; + + n = getprop(node, "virtual-reg", addr, nres * 4); + if (n > 0) { + for (i = 0; i < n/4; i ++) + ((u32 *)addr)[i] = be32_to_cpu(((u32 *)addr)[i]); + return n / 4; + } + + for (n = 0; n < nres; n++) { + if (!dt_xlate_reg(node, n, &xaddr, NULL)) + break; + + addr[n] = (void *)xaddr; + } + + return n; +} + -- cgit v1.2.3