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authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /arch/sparc/lib/divdi3.S
downloadlinux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz
linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip
Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
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(). ...
Diffstat (limited to 'arch/sparc/lib/divdi3.S')
-rw-r--r--arch/sparc/lib/divdi3.S271
1 files changed, 271 insertions, 0 deletions
diff --git a/arch/sparc/lib/divdi3.S b/arch/sparc/lib/divdi3.S
new file mode 100644
index 000000000..a7389409d
--- /dev/null
+++ b/arch/sparc/lib/divdi3.S
@@ -0,0 +1,271 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+ */
+
+#include <asm/export.h>
+ .text
+ .align 4
+ .globl __divdi3
+__divdi3:
+ save %sp,-104,%sp
+ cmp %i0,0
+ bge .LL40
+ mov 0,%l4
+ mov -1,%l4
+ sub %g0,%i1,%o0
+ mov %o0,%o5
+ subcc %g0,%o0,%g0
+ sub %g0,%i0,%o0
+ subx %o0,0,%o4
+ mov %o4,%i0
+ mov %o5,%i1
+.LL40:
+ cmp %i2,0
+ bge .LL84
+ mov %i3,%o4
+ xnor %g0,%l4,%l4
+ sub %g0,%i3,%o0
+ mov %o0,%o3
+ subcc %g0,%o0,%g0
+ sub %g0,%i2,%o0
+ subx %o0,0,%o2
+ mov %o2,%i2
+ mov %o3,%i3
+ mov %i3,%o4
+.LL84:
+ cmp %i2,0
+ bne .LL45
+ mov %i1,%i3
+ cmp %o4,%i0
+ bleu .LL46
+ mov %i3,%o1
+ mov 32,%g1
+ subcc %i0,%o4,%g0
+1: bcs 5f
+ addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
+ sub %i0,%o4,%i0 ! this kills msb of n
+ addx %i0,%i0,%i0 ! so this cannot give carry
+ subcc %g1,1,%g1
+2: bne 1b
+ subcc %i0,%o4,%g0
+ bcs 3f
+ addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
+ b 3f
+ sub %i0,%o4,%i0 ! this kills msb of n
+4: sub %i0,%o4,%i0
+5: addxcc %i0,%i0,%i0
+ bcc 2b
+ subcc %g1,1,%g1
+! Got carry from n. Subtract next step to cancel this carry.
+ bne 4b
+ addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
+ sub %i0,%o4,%i0
+3: xnor %o1,0,%o1
+ b .LL50
+ mov 0,%o2
+.LL46:
+ cmp %o4,0
+ bne .LL85
+ mov %i0,%o2
+ mov 1,%o0
+ mov 0,%o1
+ wr %g0, 0, %y
+ udiv %o0, %o1, %o0
+ mov %o0,%o4
+ mov %i0,%o2
+.LL85:
+ mov 0,%g3
+ mov 32,%g1
+ subcc %g3,%o4,%g0
+1: bcs 5f
+ addxcc %o2,%o2,%o2 ! shift n1n0 and a q-bit in lsb
+ sub %g3,%o4,%g3 ! this kills msb of n
+ addx %g3,%g3,%g3 ! so this cannot give carry
+ subcc %g1,1,%g1
+2: bne 1b
+ subcc %g3,%o4,%g0
+ bcs 3f
+ addxcc %o2,%o2,%o2 ! shift n1n0 and a q-bit in lsb
+ b 3f
+ sub %g3,%o4,%g3 ! this kills msb of n
+4: sub %g3,%o4,%g3
+5: addxcc %g3,%g3,%g3
+ bcc 2b
+ subcc %g1,1,%g1
+! Got carry from n. Subtract next step to cancel this carry.
+ bne 4b
+ addcc %o2,%o2,%o2 ! shift n1n0 and a 0-bit in lsb
+ sub %g3,%o4,%g3
+3: xnor %o2,0,%o2
+ mov %g3,%i0
+ mov %i3,%o1
+ mov 32,%g1
+ subcc %i0,%o4,%g0
+1: bcs 5f
+ addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
+ sub %i0,%o4,%i0 ! this kills msb of n
+ addx %i0,%i0,%i0 ! so this cannot give carry
+ subcc %g1,1,%g1
+2: bne 1b
+ subcc %i0,%o4,%g0
+ bcs 3f
+ addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
+ b 3f
+ sub %i0,%o4,%i0 ! this kills msb of n
+4: sub %i0,%o4,%i0
+5: addxcc %i0,%i0,%i0
+ bcc 2b
+ subcc %g1,1,%g1
+! Got carry from n. Subtract next step to cancel this carry.
+ bne 4b
+ addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
+ sub %i0,%o4,%i0
+3: xnor %o1,0,%o1
+ b .LL86
+ mov %o1,%l1
+.LL45:
+ cmp %i2,%i0
+ bleu .LL51
+ sethi %hi(65535),%o0
+ b .LL78
+ mov 0,%o1
+.LL51:
+ or %o0,%lo(65535),%o0
+ cmp %i2,%o0
+ bgu .LL58
+ mov %i2,%o1
+ cmp %i2,256
+ addx %g0,-1,%o0
+ b .LL64
+ and %o0,8,%o2
+.LL58:
+ sethi %hi(16777215),%o0
+ or %o0,%lo(16777215),%o0
+ cmp %i2,%o0
+ bgu .LL64
+ mov 24,%o2
+ mov 16,%o2
+.LL64:
+ srl %o1,%o2,%o0
+ sethi %hi(__clz_tab),%o1
+ or %o1,%lo(__clz_tab),%o1
+ ldub [%o0+%o1],%o0
+ add %o0,%o2,%o0
+ mov 32,%o1
+ subcc %o1,%o0,%o3
+ bne,a .LL72
+ sub %o1,%o3,%o1
+ cmp %i0,%i2
+ bgu .LL74
+ cmp %i3,%o4
+ blu .LL78
+ mov 0,%o1
+.LL74:
+ b .LL78
+ mov 1,%o1
+.LL72:
+ sll %i2,%o3,%o2
+ srl %o4,%o1,%o0
+ or %o2,%o0,%i2
+ sll %o4,%o3,%o4
+ srl %i0,%o1,%o2
+ sll %i0,%o3,%o0
+ srl %i3,%o1,%o1
+ or %o0,%o1,%i0
+ sll %i3,%o3,%i3
+ mov %i0,%o1
+ mov 32,%g1
+ subcc %o2,%i2,%g0
+1: bcs 5f
+ addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
+ sub %o2,%i2,%o2 ! this kills msb of n
+ addx %o2,%o2,%o2 ! so this cannot give carry
+ subcc %g1,1,%g1
+2: bne 1b
+ subcc %o2,%i2,%g0
+ bcs 3f
+ addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
+ b 3f
+ sub %o2,%i2,%o2 ! this kills msb of n
+4: sub %o2,%i2,%o2
+5: addxcc %o2,%o2,%o2
+ bcc 2b
+ subcc %g1,1,%g1
+! Got carry from n. Subtract next step to cancel this carry.
+ bne 4b
+ addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
+ sub %o2,%i2,%o2
+3: xnor %o1,0,%o1
+ mov %o2,%i0
+ wr %g0,%o1,%y ! SPARC has 0-3 delay insn after a wr
+ sra %o4,31,%g2 ! Do not move this insn
+ and %o1,%g2,%g2 ! Do not move this insn
+ andcc %g0,0,%g1 ! Do not move this insn
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,%o4,%g1
+ mulscc %g1,0,%g1
+ add %g1,%g2,%o0
+ rd %y,%o2
+ cmp %o0,%i0
+ bgu,a .LL78
+ add %o1,-1,%o1
+ bne,a .LL50
+ mov 0,%o2
+ cmp %o2,%i3
+ bleu .LL50
+ mov 0,%o2
+ add %o1,-1,%o1
+.LL78:
+ mov 0,%o2
+.LL50:
+ mov %o1,%l1
+.LL86:
+ mov %o2,%l0
+ mov %l0,%i0
+ mov %l1,%i1
+ cmp %l4,0
+ be .LL81
+ sub %g0,%i1,%o0
+ mov %o0,%l3
+ subcc %g0,%o0,%g0
+ sub %g0,%i0,%o0
+ subx %o0,0,%l2
+ mov %l2,%i0
+ mov %l3,%i1
+.LL81:
+ ret
+ restore
+EXPORT_SYMBOL(__divdi3)