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author | 2023-02-21 18:24:12 -0800 | |
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committer | 2023-02-21 18:24:12 -0800 | |
commit | 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch) | |
tree | cc5c2d0a898769fd59549594fedb3ee6f84e59a0 /arch/powerpc/include/asm/xive.h | |
download | linux-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/powerpc/include/asm/xive.h')
-rw-r--r-- | arch/powerpc/include/asm/xive.h | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/xive.h b/arch/powerpc/include/asm/xive.h new file mode 100644 index 000000000..92930b0b5 --- /dev/null +++ b/arch/powerpc/include/asm/xive.h @@ -0,0 +1,169 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright 2016,2017 IBM Corporation. + */ +#ifndef _ASM_POWERPC_XIVE_H +#define _ASM_POWERPC_XIVE_H + +#include <asm/opal-api.h> + +#define XIVE_INVALID_VP 0xffffffff + +#ifdef CONFIG_PPC_XIVE + +/* + * Thread Interrupt Management Area (TIMA) + * + * This is a global MMIO region divided in 4 pages of varying access + * permissions, providing access to per-cpu interrupt management + * functions. It always identifies the CPU doing the access based + * on the PowerBus initiator ID, thus we always access via the + * same offset regardless of where the code is executing + */ +extern void __iomem *xive_tima; +extern unsigned long xive_tima_os; + +/* + * Offset in the TM area of our current execution level (provided by + * the backend) + */ +extern u32 xive_tima_offset; + +/* + * Per-irq data (irq_get_handler_data for normal IRQs), IPIs + * have it stored in the xive_cpu structure. We also cache + * for normal interrupts the current target CPU. + * + * This structure is setup by the backend for each interrupt. + */ +struct xive_irq_data { + u64 flags; + u64 eoi_page; + void __iomem *eoi_mmio; + u64 trig_page; + void __iomem *trig_mmio; + u32 esb_shift; + int src_chip; + u32 hw_irq; + + /* Setup/used by frontend */ + int target; + /* + * saved_p means that there is a queue entry for this interrupt + * in some CPU's queue (not including guest vcpu queues), even + * if P is not set in the source ESB. + * stale_p means that there is no queue entry for this interrupt + * in some CPU's queue, even if P is set in the source ESB. + */ + bool saved_p; + bool stale_p; +}; +#define XIVE_IRQ_FLAG_STORE_EOI 0x01 +#define XIVE_IRQ_FLAG_LSI 0x02 +/* #define XIVE_IRQ_FLAG_SHIFT_BUG 0x04 */ /* P9 DD1.0 workaround */ +/* #define XIVE_IRQ_FLAG_MASK_FW 0x08 */ /* P9 DD1.0 workaround */ +/* #define XIVE_IRQ_FLAG_EOI_FW 0x10 */ /* P9 DD1.0 workaround */ +#define XIVE_IRQ_FLAG_H_INT_ESB 0x20 + +/* Special flag set by KVM for excalation interrupts */ +#define XIVE_IRQ_FLAG_NO_EOI 0x80 + +#define XIVE_INVALID_CHIP_ID -1 + +/* A queue tracking structure in a CPU */ +struct xive_q { + __be32 *qpage; + u32 msk; + u32 idx; + u32 toggle; + u64 eoi_phys; + u32 esc_irq; + atomic_t count; + atomic_t pending_count; + u64 guest_qaddr; + u32 guest_qshift; +}; + +/* Global enable flags for the XIVE support */ +extern bool __xive_enabled; + +static inline bool xive_enabled(void) { return __xive_enabled; } + +bool xive_spapr_init(void); +bool xive_native_init(void); +void xive_smp_probe(void); +int xive_smp_prepare_cpu(unsigned int cpu); +void xive_smp_setup_cpu(void); +void xive_smp_disable_cpu(void); +void xive_teardown_cpu(void); +void xive_shutdown(void); +void xive_flush_interrupt(void); + +/* xmon hook */ +void xmon_xive_do_dump(int cpu); +int xmon_xive_get_irq_config(u32 hw_irq, struct irq_data *d); +void xmon_xive_get_irq_all(void); + +/* APIs used by KVM */ +u32 xive_native_default_eq_shift(void); +u32 xive_native_alloc_vp_block(u32 max_vcpus); +void xive_native_free_vp_block(u32 vp_base); +int xive_native_populate_irq_data(u32 hw_irq, + struct xive_irq_data *data); +void xive_cleanup_irq_data(struct xive_irq_data *xd); +void xive_irq_free_data(unsigned int virq); +void xive_native_free_irq(u32 irq); +int xive_native_configure_irq(u32 hw_irq, u32 target, u8 prio, u32 sw_irq); + +int xive_native_configure_queue(u32 vp_id, struct xive_q *q, u8 prio, + __be32 *qpage, u32 order, bool can_escalate); +void xive_native_disable_queue(u32 vp_id, struct xive_q *q, u8 prio); + +void xive_native_sync_source(u32 hw_irq); +void xive_native_sync_queue(u32 hw_irq); +bool is_xive_irq(struct irq_chip *chip); +int xive_native_enable_vp(u32 vp_id, bool single_escalation); +int xive_native_disable_vp(u32 vp_id); +int xive_native_get_vp_info(u32 vp_id, u32 *out_cam_id, u32 *out_chip_id); +bool xive_native_has_single_escalation(void); +bool xive_native_has_save_restore(void); + +int xive_native_get_queue_info(u32 vp_id, uint32_t prio, + u64 *out_qpage, + u64 *out_qsize, + u64 *out_qeoi_page, + u32 *out_escalate_irq, + u64 *out_qflags); + +int xive_native_get_queue_state(u32 vp_id, uint32_t prio, u32 *qtoggle, + u32 *qindex); +int xive_native_set_queue_state(u32 vp_id, uint32_t prio, u32 qtoggle, + u32 qindex); +int xive_native_get_vp_state(u32 vp_id, u64 *out_state); +bool xive_native_has_queue_state_support(void); +extern u32 xive_native_alloc_irq_on_chip(u32 chip_id); + +static inline u32 xive_native_alloc_irq(void) +{ + return xive_native_alloc_irq_on_chip(OPAL_XIVE_ANY_CHIP); +} + +#else + +static inline bool xive_enabled(void) { return false; } + +static inline bool xive_spapr_init(void) { return false; } +static inline bool xive_native_init(void) { return false; } +static inline void xive_smp_probe(void) { } +static inline int xive_smp_prepare_cpu(unsigned int cpu) { return -EINVAL; } +static inline void xive_smp_setup_cpu(void) { } +static inline void xive_smp_disable_cpu(void) { } +static inline void xive_shutdown(void) { } +static inline void xive_flush_interrupt(void) { } + +static inline u32 xive_native_alloc_vp_block(u32 max_vcpus) { return XIVE_INVALID_VP; } +static inline void xive_native_free_vp_block(u32 vp_base) { } + +#endif + +#endif /* _ASM_POWERPC_XIVE_H */ |