LinuxKPI: implement dma_sync_sg_for_{cpu, device}()
Implement dma_sync_sg_for_{cpu, device}() and
dma_sync_sgtable_for_device().
These functions are useful for my GSoC 2026 project, udmabuf.
Reviewed by: bz
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D57766
LinuxKPI: Correct nents passed to dma_{un,}map_sg_attrs()
According to Linux documentation the nents argument to dma_unmap_sg()
must be the number one passed in, not the number of DMA addresses.
In LinuxKPI this means orig_nents and not nents, so adjust this.
Given nents and orig_nents should always be the same in LinuxKPI,
this should only be a NOP for correctness.
Reviewed by: bz, aokblast (LGTM)
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D57842
pciconf: extend tree mode to also print numerical IDs
Also print the vendor/device and subvendor/subdevice IDs in addition
to any strings from the database found if the -v flag is given more
than once.
This helps with device identification if the strings resolve to
identical values for entire product families as well as when the
exact card cannot be determined from the string.
In theory a second call to pciconf could present that information in
non-tree mode but that kind-of defeats the purpose.
Reviewed by: jhb
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D56248
libmagic: Add swap.c and magic.h to SRCS.
file 5.48 added swap.c and swap.h for byte-swapping operations, which are
required on hosts that lack <byteswap.h> or <sys/bswap.h> (e.g. macOS cross-building
or older FreeBSD bootstrap environments).
Also add magic.h to SRCS so object files depend on the generated header
before compiling, avoiding falling back to the host's /usr/include/magic.h
during parallel builds.
Reported by: wosch
MFC after: 1 week
Fixes: 7af41682a96b ("MFV: file 5.48")
asmc: add system state and board identity sysctls
Add dev.asmc.0.system subtree with read-only sysctls for SMC diagnostic
and identity keys: shutdown_cause (MSSD), sleep_cause (MSSP),
thermal_status (MSAL), time_of_day (CLKT), power_state (MSPS),
board_id (RPlt), and chip_gen (RGEN).
Each sysctl is registered only if the key exists on the hardware.
Reviewed by: adrian
Differential Revision: https://reviews.freebsd.org/D57853
(cherry picked from commit 6a1bd5212f290933d1429a6d4787394ee53e3181)
asmc: deduplicate sensor converters and cause sysctls
Replace per-type spXX_to_milli() functions with a table-driven
asmc_sensor_convert() that looks up the divisor by SMC type string.
Reviewed by: adrian
Differential Revision: https://reviews.freebsd.org/D57854
(cherry picked from commit 126f82a3eb613976f477aa8326a208459f60465d)
asmc: prefer MMIO backend over PIO when both are present
T2, T1, and some pre-T1 Macs advertise a legacy PIO
range in the SMC ACPI _CRS alongside a live MMIO window, but the
silicon behind the PIO range is bogus.
Try MMIO first, validate via LDKN >= 2, fall back to PIO if that
fails or no MMIO resource is present. Drop "(T2)" from the backend
message since MMIO isn't T2-exclusive.
MFC: 1 week
Reviewed by: ngie
Differential Revision: https://reviews.freebsd.org/D58839
(cherry picked from commit 37826269b41b46c72264191d35b09baf24e055b9)
asmc: try PIO before MMIO to avoid false T2 detection
Add hw.asmc.system-state and hw.asmc.board-id read-only sysctls to
expose the T2 system state register and Mac board identifier via SMC.
Try PIO access before MMIO during probe to prevent false T2 detection
on Macs that happen to have something mapped at the T2 BAR address.
Reviewed by: adrian
Differential Revision: https://reviews.freebsd.org/D57844
(cherry picked from commit bb1e071be47fa03accadace587784c85654de91e)
asmc: replace hardcoded model table with universal probing
Probe SMC keys at attach time to detect hardware capabilities,
supporting all Intel Apple machines without per-model entries.
Sensors are discovered by scanning sorted SMC key ranges for
known prefixes and types. Capabilities such as SMS, fan safe
speed, and ambient light are detected by key presence.
A global key description table provides human-readable names
for well-known temperature sensors.
Tested on:
- MacBook Pro (Early 2007, Mid 2014, Mid 2015)
- MacBook Air (Early 2015, Mid 2017)
- iMac (Mid 2011, Late 2013)
- Mac mini (Mid 2011)
Reviewed by: adrian
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asmc: add MMIO backend for T2 Macs
T2 Macs (2018+) expose the SMC via memory-mapped registers instead of
I/O ports. Add asmcmmio.c/asmcmmio.h implementing the MMIO transport:
key read/write, getinfo, getbyindex, and a poll-based wait with
exponential backoff.
The driver probes for MMIO at attach time by checking the LDKN firmware
version key; if MMIO is available it is used, otherwise the standard
I/O port backend is used.
T2 fan speeds use IEEE 754 floats instead of fpe2 fixed-point.
Per-fan manual mode uses F%dMd keys instead of the FS! bitmask.
Battery charge limit is exposed via dev.asmc.N.battery_charge_limit.
Tested on:
MacBookPro16,2 (A2251, iBridge2,10)
MacBookPro15,4 (A2159, iBridge2,8)
MacBookAir8,2 (A1932, iBridge2,5)
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asmc: fix asmc_key_dump() page fault on T2 MMIO backend
asmc_key_dump() used I/O port macros (ASMC_DATAPORT_WRITE/READ,
asmc_command()) unconditionally. On T2 Macs, sc_ioport is NULL
(MMIO backend is used instead), causing a page fault when
ASMC_DEBUG triggers asmc_dumpall() during attach.
Add an MMIO guard at the top of asmc_key_dump(): delegate to
asmc_key_dump_by_index() + asmc_key_read() for MMIO devices,
consistent with the rest of the T2 code paths.
Reviewed by: adrian
Differential Revision: https://reviews.freebsd.org/D56748
(cherry picked from commit e37e49bfaa2763f0ce522a3e54de9b494e346465)
asmc: rename wol sysctl to auto_poweron
Older SMC firmware exposed AUPO as a Wake-on-LAN control. On updated
firmware, the key controls automatic power-on when AC power is restored
after a power loss; WoL is handled by the GBE controller instead.
Rename the sysctl to reflect the current semantics. No compatibility
alias is provided as the sysctl has not appeared in any release.
Reviewed by: ziaee, adrian
Differential Revision: https://reviews.freebsd.org/D56747
(cherry picked from commit 36b399f55e3fa16063188b6f8ad8eaaf8c2215ab)
asmc: add raw SMC key read/write interface
This patch adds a debugging interface to read and write arbitrary
Apple SMC keys by name through sysctl, enabling hardware exploration
and control of undocumented features.
The interface provides four sysctls under dev.asmc.0.raw.*:
- key - Set the 4-character SMC key name (e.g., "AUPO")
- value - Read/write key value as a hex string
- len - Auto-detected key value length (can be overridden)
- type - Read-only 4-character type string (e.g., "ui8", "flt")
Implementation includes a new asmc_key_getinfo() function using SMC
command 0x13 to query key metadata. The interface automatically
detects key lengths and types, uses hex string encoding for
arbitrary binary values, and is safe for concurrent access via
CTLFLAG_NEEDGIANT.
This interface was essential for discovering that the AUPO key
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asmc: add support for MacBookPro13,1
This commit adds support for the MacBookPro13,1 (late 2016, 13-inch). The SMC
keys were collected from https://logi.wiki/index.php/SMC_Sensor_Codes. Two
temperature keys are omitted because they fail to be read: TI0P (IO Proximity)
and Ta0P (Ambient Air).
Note that the with this model the `dev.asmc.0.fan.0.minspeed` setting only
applies when the fans have been activated by the system. In my testing, the fans
did not spin up until CPU temperatures hit about 80C. At lower temperatures, the
fans will happily ignore the minimum speed and remain at 0 rpm.
Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/2137
(cherry picked from commit b5b9c65a689457e608cc31831ed690d303d63ffa)
rtld: explain the use of rtld_bind_lock in rtld_get_addr_slow()
Discussed with: jrtc27
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D59269
rtld i386: use macro for the 'GNU ABI' calling convention of TLS resolver
Discussed with: jrtc27
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D59269
dns/wdns: Upgrade to 0.13.0
0.13.0:
* Remove strict aliasing violations.
* Replace Python dependency with shell script.
* Fix various off-by-one errors in bounds checking.
* Various small build and test fixes.
MFH: 2026Q3
Sponsored by: DomainTools LLC
(cherry picked from commit 8a8a26d3b2c0dcdc01a60e11a07ef069338ac1ab)
