diff options
| author |  Linus Torvalds <torvalds@linux-foundation.org> | 2023-02-21 18:24:12 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-02-21 18:24:12 -0800 |
| commit | 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch) | |
| tree | cc5c2d0a898769fd59549594fedb3ee6f84e59a0 /Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x | |
| 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 'Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x | 526 |
1 files changed, 526 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x new file mode 100644 index 000000000..08b1964f2 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x @@ -0,0 +1,526 @@ +What: /sys/bus/coresight/devices/etm<N>/enable_source +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Enable/disable tracing on this specific trace entiry. + Enabling a source implies the source has been configured + properly and a sink has been identidifed for it. The path + of coresight components linking the source to the sink is + configured and managed automatically by the coresight framework. + +What: /sys/bus/coresight/devices/etm<N>/cpu +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) The CPU this tracing entity is associated with. + +What: /sys/bus/coresight/devices/etm<N>/nr_pe_cmp +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Indicates the number of PE comparator inputs that are + available for tracing. + +What: /sys/bus/coresight/devices/etm<N>/nr_addr_cmp +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Indicates the number of address comparator pairs that are + available for tracing. + +What: /sys/bus/coresight/devices/etm<N>/nr_cntr +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Indicates the number of counters that are available for + tracing. + +What: /sys/bus/coresight/devices/etm<N>/nr_ext_inp +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Indicates how many external inputs are implemented. + +What: /sys/bus/coresight/devices/etm<N>/numcidc +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Indicates the number of Context ID comparators that are + available for tracing. + +What: /sys/bus/coresight/devices/etm<N>/numvmidc +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Indicates the number of VMID comparators that are available + for tracing. + +What: /sys/bus/coresight/devices/etm<N>/nrseqstate +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Indicates the number of sequencer states that are + implemented. + +What: /sys/bus/coresight/devices/etm<N>/nr_resource +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Indicates the number of resource selection pairs that are + available for tracing. + +What: /sys/bus/coresight/devices/etm<N>/nr_ss_cmp +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Indicates the number of single-shot comparator controls that + are available for tracing. + +What: /sys/bus/coresight/devices/etm<N>/reset +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Write) Cancels all configuration on a trace unit and set it back + to its boot configuration. + +What: /sys/bus/coresight/devices/etm<N>/mode +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls various modes supported by this ETM, for example + P0 instruction tracing, branch broadcast, cycle counting and + context ID tracing. + +What: /sys/bus/coresight/devices/etm<N>/pe +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls which PE to trace. + +What: /sys/bus/coresight/devices/etm<N>/event +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls the tracing of arbitrary events from bank 0 to 3. + +What: /sys/bus/coresight/devices/etm<N>/event_instren +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls the behavior of the events in bank 0 to 3. + +What: /sys/bus/coresight/devices/etm<N>/event_ts +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls the insertion of global timestamps in the trace + streams. + +What: /sys/bus/coresight/devices/etm<N>/syncfreq +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls how often trace synchronization requests occur. + +What: /sys/bus/coresight/devices/etm<N>/cyc_threshold +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Sets the threshold value for cycle counting. + +What: /sys/bus/coresight/devices/etm<N>/bb_ctrl +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls which regions in the memory map are enabled to + use branch broadcasting. + +What: /sys/bus/coresight/devices/etm<N>/event_vinst +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls instruction trace filtering. + +What: /sys/bus/coresight/devices/etm<N>/s_exlevel_vinst +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) In Secure state, each bit controls whether instruction + tracing is enabled for the corresponding exception level. + +What: /sys/bus/coresight/devices/etm<N>/ns_exlevel_vinst +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) In non-secure state, each bit controls whether instruction + tracing is enabled for the corresponding exception level. + +What: /sys/bus/coresight/devices/etm<N>/addr_idx +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Select which address comparator or pair (of comparators) to + work with. + +What: /sys/bus/coresight/devices/etm<N>/addr_instdatatype +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls what type of comparison the trace unit performs. + +What: /sys/bus/coresight/devices/etm<N>/addr_single +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Used to setup single address comparator values. + +What: /sys/bus/coresight/devices/etm<N>/addr_range +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Used to setup address range comparator values. + +What: /sys/bus/coresight/devices/etm<N>/seq_idx +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Select which sequensor. + +What: /sys/bus/coresight/devices/etm<N>/seq_state +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Use this to set, or read, the sequencer state. + +What: /sys/bus/coresight/devices/etm<N>/seq_event +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Moves the sequencer state to a specific state. + +What: /sys/bus/coresight/devices/etm<N>/seq_reset_event +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Moves the sequencer to state 0 when a programmed event + occurs. + +What: /sys/bus/coresight/devices/etm<N>/cntr_idx +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Select which counter unit to work with. + +What: /sys/bus/coresight/devices/etm<N>/cntrldvr +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) This sets or returns the reload count value of the + specific counter. + +What: /sys/bus/coresight/devices/etm<N>/cntr_val +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) This sets or returns the current count value of the + specific counter. + +What: /sys/bus/coresight/devices/etm<N>/cntr_ctrl +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls the operation of the selected counter. + +What: /sys/bus/coresight/devices/etm<N>/res_idx +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Select which resource selection unit to work with. + +What: /sys/bus/coresight/devices/etm<N>/res_ctrl +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls the selection of the resources in the trace unit. + +What: /sys/bus/coresight/devices/etm<N>/ctxid_idx +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Select which context ID comparator to work with. + +What: /sys/bus/coresight/devices/etm<N>/ctxid_pid +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Get/Set the context ID comparator value to trigger on. + +What: /sys/bus/coresight/devices/etm<N>/ctxid_masks +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Mask for all 8 context ID comparator value + registers (if implemented). + +What: /sys/bus/coresight/devices/etm<N>/vmid_idx +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Select which virtual machine ID comparator to work with. + +What: /sys/bus/coresight/devices/etm<N>/vmid_val +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Get/Set the virtual machine ID comparator value to + trigger on. + +What: /sys/bus/coresight/devices/etm<N>/vmid_masks +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Mask for all 8 virtual machine ID comparator value + registers (if implemented). + +What: /sys/bus/coresight/devices/etm<N>/addr_exlevel_s_ns +Date: December 2019 +KernelVersion: 5.5 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Set the Exception Level matching bits for secure and + non-secure exception levels. + +What: /sys/bus/coresight/devices/etm<N>/vinst_pe_cmp_start_stop +Date: December 2019 +KernelVersion: 5.5 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Access the start stop control register for PE input + comparators. + +What: /sys/bus/coresight/devices/etm<N>/addr_cmp_view +Date: December 2019 +KernelVersion: 5.5 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Print the current settings for the selected address + comparator. + +What: /sys/bus/coresight/devices/etm<N>/sshot_idx +Date: December 2019 +KernelVersion: 5.5 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Select the single shot control register to access. + +What: /sys/bus/coresight/devices/etm<N>/sshot_ctrl +Date: December 2019 +KernelVersion: 5.5 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Access the selected single shot control register. + +What: /sys/bus/coresight/devices/etm<N>/sshot_status +Date: December 2019 +KernelVersion: 5.5 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Print the current value of the selected single shot + status register. + +What: /sys/bus/coresight/devices/etm<N>/sshot_pe_ctrl +Date: December 2019 +KernelVersion: 5.5 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Access the selected single show PE comparator control + register. + +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcoslsr +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Print the content of the OS Lock Status Register (0x304). + The value it taken directly from the HW. + +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcpdcr +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Print the content of the Power Down Control Register + (0x310). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcpdsr +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Print the content of the Power Down Status Register + (0x314). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/etm<N>/mgmt/trclsr +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Print the content of the SW Lock Status Register + (0xFB4). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcauthstatus +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Print the content of the Authentication Status Register + (0xFB8). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcdevid +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Print the content of the Device ID Register + (0xFC8). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcdevarch +Date: January 2021 +KernelVersion: 5.12 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Print the content of the Device Architecture Register + (offset 0xFBC). The value is taken directly read + from the HW. + +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcdevtype +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Print the content of the Device Type Register + (0xFCC). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcpidr0 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Print the content of the Peripheral ID0 Register + (0xFE0). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcpidr1 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Print the content of the Peripheral ID1 Register + (0xFE4). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcpidr2 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Print the content of the Peripheral ID2 Register + (0xFE8). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcpidr3 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Print the content of the Peripheral ID3 Register + (0xFEC). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcconfig +Date: February 2016 +KernelVersion: 4.07 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Print the content of the trace configuration register + (0x010) as currently set by SW. + +What: /sys/bus/coresight/devices/etm<N>/mgmt/trctraceid +Date: February 2016 +KernelVersion: 4.07 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Print the content of the trace ID register (0x040). + +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr0 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Returns the tracing capabilities of the trace unit (0x1E0). + The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr1 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Returns the tracing capabilities of the trace unit (0x1E4). + The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr2 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Returns the maximum size of the data value, data address, + VMID, context ID and instuction address in the trace unit + (0x1E8). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr3 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Returns the value associated with various resources + available to the trace unit. See the Trace Macrocell + architecture specification for more details (0x1E8). + The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr4 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Returns how many resources the trace unit supports (0x1F0). + The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr5 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Returns how many resources the trace unit supports (0x1F4). + The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr8 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Returns the maximum speculation depth of the instruction + trace stream. (0x180). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr9 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Returns the number of P0 right-hand keys that the trace unit + can use (0x184). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr10 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Returns the number of P1 right-hand keys that the trace unit + can use (0x188). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr11 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Returns the number of special P1 right-hand keys that the + trace unit can use (0x18C). The value is taken directly from + the HW. + +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr12 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Returns the number of conditional P1 right-hand keys that + the trace unit can use (0x190). The value is taken directly + from the HW. + +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr13 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (Read) Returns the number of special conditional P1 right-hand keys + that the trace unit can use (0x194). The value is taken + directly from the HW. + +What: /sys/bus/coresight/devices/etm<N>/ts_source +Date: October 2022 +KernelVersion: 6.1 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> or Suzuki K Poulose <suzuki.poulose@arm.com> +Description: (Read) When FEAT_TRF is implemented, value of TRFCR_ELx.TS used for + trace session. Otherwise -1 indicates an unknown time source. Check + trcidr0.tssize to see if a global timestamp is available. |