Create empty hints files for these platforms. They don't normally need a
hints file, but people use them for device instance wiring. It's less
confusing if they always exist.
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D49052
This adds the ESS EDMA driver introduced by the IPQ4018/IPQ4019.
It provides a number of transmit and receive rings which can be mapped
into virtual ethernet devices, which this driver supports.
It's partially integrated into the ar40xx etherswitch which supplies
the port and some filtering/VPN offload functionality. This driver
only currently supports the per-port options which allow for the
virtual ethernet driver mapping.
This was written by reverse engineering the functionality of the
ethernet switch and ethernet driver support provided by Qualcomm
Atheros via their OpenWRT contributions. The code is all originally
authored by myself.
Differential Revision: https://reviews.freebsd.org/D49027
Use a wfet, rather than a busy wait, in DELAY() when the FEAT_WFxT
extension is available.
Reviewed by: andrew
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D48580
Signed-off-by: Harry Moulton <harry.moulton@arm.com>
This patch refactors the 'sdhci_fdt.c' driver by moving all vendor
specific routines into separate files and making the base 'sdhci_fdt'
driver subclassable. The goal is to make adding new FDT-based drivers
easier and more maintainable. No functional change intended.
Reviewed by: manu, imp
Differential Revision: https://reviews.freebsd.org/D48527
This MD function is invoked before dumping register set notes when
writing out a core dump to ensure that the PCB for a given thread is
up to date. This provides a centralized place to update the PCB with
values of the current thread for each arch rather than doing this work
in each register set's get method.
Discussed with: jrtc27
Reviewed by: kib, markj
Sponsored by: AFRL, DARPA
Differential Revision: https://reviews.freebsd.org/D44910
The SBI timer functionality is partially broken on the Allwinner D1, so
we require this driver to provide an eventtimer/system timer interrupts.
The timecounter interface, on the other hand, is not required. The
generic RISC-V timer driver uses the native rdtime instruction, and
implements vdso, so this should be preferred.
Reviewed by: manu, ganbold
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D48672
This reflects its expanded support for platforms other than the A10.
Functions specific to A10/A13 retain the a10 prefix, but the majority of
names in the driver are changed, e.g. a10_timer_softc becomes
aw_timer_softc.
Reviewed by: manu, ganbold
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D48671
In preparation for enabling the driver on the D1 platform (riscv).
- Better isolate armv7-only portions of the driver
- Move a10 timecounter setup into a helper function
- Small style tweaks
Reviewed by: manu, ganbold
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D48670
Initialize the globals with macros so we can use the same values in the
loader.
Also remove unnecessary "elfN module" checks.
Reviewed by: imp, kib
Pull Request: https://github.com/freebsd/freebsd-src/pull/1394
The way we got the kernel metadata pointer was by calling
preload_search_by_type with one of the following three: "elf kernel",
"elf32 kernel" and "elf64 kernel". Which one(s) we used wasn't
consistent though. Sometimes we would only try "elf kernel", and other
times we would try one of the latter two if the first failed. However,
the loader only ever sets "elf kernel" as the kernel type.
Now, the kmdp is a global, preload_kmdp, and it's initialized using
preload_initkmdp in machdep.c (or machdep_boot.c on arm/64).
preload_initkmdp takes a single boolean argument that tells us whether
not finding the kmdp is fatal or not.
Reviewed by: imp, kib
Pull Request: https://github.com/freebsd/freebsd-src/pull/1394
This flag was used as a transition for differing pcib implementations.
Today it is defined for all supported architectures, and can be removed.
Reviewed by: imp, jhb
Differential Revision: https://reviews.freebsd.org/D48485
Implement basic clkdev methods required by the generic clk_gate device.
This should make it functional, and prevent panics when invoking the
clock's CLKNODE_GET_GATE method (e.g. with `sysctl -a`).
Additionally, we need to fill in other key fields of the clk_gate_def
structure before registering each clk.
PR: 278188
Reported by: solo_code@protonmail.com
Tested by: solo_code@protonmail.com
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D48419
These macros have substantially identical implementations on each
platform. Use roundup2/rounddown2 for round_page/trunc_page.
This version standardizes on not using explicit casts and instead
preserving the original type. A couple of tweaks were required to
make this work.
Reviewed by: brooks, kib, markj
Obtained from: CheriBSD
Differential Revision: https://reviews.freebsd.org/D48450
Add the generic USB drivers and FDT glue to the build.
Make small tweaks to the aw_usbphy and aw_musb drivers for the Allwinner
D1.
Reviewed by: manu
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D48126
While here, check for errors from bus_generic_detach and move it to
the start of detach if necessary.
Differential Revision: https://reviews.freebsd.org/D47969
In some cases, move the call to bus_generic_detach earlier so that any
detach failures from child devices do not leave the parent device
partially detached.
Differential Revision: https://reviews.freebsd.org/D47966
Deleting a child explicitly before calling bus_generic_detach is now
redundant, so remove those calls and rely on bus_generic_detach to
delete children instead.
Differential Revision: https://reviews.freebsd.org/D47961
This provides better semantics as a standalone DEVMETHOD for
device_attach as bus drivers should remove child devices they created
as part of detach cleanup. The implementation calls
bus_detach_children() first to permit child devices an opportunity to
veto the detach operation. If that succeeds, device_delete_children()
is used to delete the child devices.
This requires fixing various drivers that were deleting devices
explicitly (via a device_t pointer cached in the softc) after calling
bus_generic_detach to stop doing that and just rely on
bus_generic_detach to remove child devices.
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D47959
This is simpler and more robust in the face of potential double-frees
(e.g. if called after bus_generic_detach which will delete devices in
a future commit).
Reviewed by: manu, imp
Differential Revision: https://reviews.freebsd.org/D47958
These drivers perform additional teardown steps in between detaching
child devices and deleting child devices.
Differential Revision: https://reviews.freebsd.org/D47957
Switch to INTR_ROOT_COUNT as this name better describes its purpose.
Remove the default INTR_ROOT_IRQ from the core. Define it (redundantly)
in each architecture's header, but now placed alongside its sibling
values (if defined by the platform, e.g. arm64 INTR_ROOT_FIQ).
Reviewed by: mhorne
Pull Request: https://github.com/freebsd/freebsd-src/pull/1280
In order to match reality, allow using these functions with pointers on
const objects, and bring us closer to C11.
Remove the '+' modifier in the atomic_load_acq_64_i586()'s inline asm
statement's constraint for '*p' (the value to load). CMPXCHG8B always
writes back some value, even when the value exchange does not happen in
which case what was read is written back. atomic_load_acq_64_i586()
further takes care of the operation atomically writing back the same
value that was read in any case. All in all, this makes the inline
asm's write back undetectable by any other code, whether executing on
other CPUs or code on the same CPU before and after the call to
atomic_load_acq_64_i586(), except for the fact that CMPXCHG8B will
trigger a #GP(0) if the memory address is part of a read-only mapping.
This unfortunate property is however out of scope of the C abstract
machine, and in particular independent of whether the 'uint64_t' pointed
to is declared 'const' or not.
Approved by: markj (mentor)
MFC after: 5 days
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D46887
The GPIO controls the multiplexing of the D1 pins to its peripherals,
so this adds the definitions needed by the aw_gpio driver to support
the D1.
Also, this modifies the aw_gpio driver to support the differences of
the D1 controller:
- pins can have up to 15 functions
- each port is mapped with an alignment of 0x30
- CFG registers have 4 bits per pin
- DRV registers have 4 bits per pin
- the offset of PULL registers is 0x24
Signed-off-by: Julien Cassette <julien.cassette@gmail.com>
Reviewed by: mhorne
Differential Revision: https://reviews.freebsd.org/D35593
Enable the driver and dependencies (aw_sid, nvmem). Add compat strings,
etc.
Found on the Allwinner D1.
Reviewed by: manu
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D47923
Pass the to-be-freed page to vm_page_iter_remove as a parameter,
rather than computing it from the iterator parameter, to improve
performance.
Reviewed by: alc
Differential Revision: https://reviews.freebsd.org/D47730
The drivers have been disconnected from the build since the removal of
the SOCFPGA kernel configs.
Reviewed by: manu, imp, andrew
Sponsored by: AFRL, DARPA
Differential Revision: https://reviews.freebsd.org/D47885
We can now include sys/intr.h to get these constants rather than using
genassym. Opt for this simpler method.
PR: 283041
Sponsored by: Netflix
Reviewed by: mmel, andrew
Differential Revision: https://reviews.freebsd.org/D47847
Sometimes we need defines from this file in assembler code. Today we do
the heavyweight approach of using genassym for that. However, they are
just #defines, so in the future we want to include sys/intr.h to pick up
the needed constants in exception.S.
PR: 283041
Sponsored by: Netflix
Reviewed by: mmel, andrew
Differential Revision: https://reviews.freebsd.org/D47846
D37419 corrupts VFP context store on signal delivery and D38696 corrupts PCB
because it performs a binary copy between structures with different layouts.
Revert the problematic parts of these commits to have signals delivery
working. Unfortunately, there are more problems with these revisions and
more fixes need to be developed.
Fixes: 6926e2699a
Fixes: 4d2427f2c4
MFC after: 4 weeks
Change cdev_mgtdev_page_free_page to take an iterator, rather than an
object and page, so that removing the page from the object radix tree
can take advantage of locality with iterators. Define a
general-purpose function to free all pages, which can be used in
several places.
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D47692
For current architectures, these are just aliases for the existing
operation on the relevant scalar integer.
Reviewed by: imp, kib
Obtained from: CheriBSD
Sponsored by: AFRL, DARPA
Differential Revision: https://reviews.freebsd.org/D47631
Use a memory barrier after calling the existing atomic_testandset_long
rather than using the fcmpset-based fallback version from
<sys/_atomic_subword.h>.
Reviewed by: kib
Sponsored by: AFRL, DARPA
Differential Revision: https://reviews.freebsd.org/D47628
Otherwise it may cause system reset before the watchdog can be pat. This
is consistent with other watchdog drivers.
Tested on Allwinner D1.
Reviewed by: manu
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D47517
Add the relevant compatible string and build glue. Update the man page
with relevant compat strings.
Reviewed by: manu
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D47516
For the Allwinner D1 (Nehza) SBC.
This RTC driver is also a clock provider, which registers two fixed
clocks. In all the devices we currently support, the names of the clocks
are present in the "clock-output-names" property of the device tree.
This is not the case for the D1 DTS, as this property does not appear in
upstream. Therefore the clock definitions are statically assigned a
name, which is overridden when specified.
Reviewed by: manu
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D47514
The BUSDMA buffer is treated as normal memory during compilation and compiler
is free to inline/optimize basic functions (i.e. memset, memcpy) accessing
buffers, including when an instruction is generated that performs a word
access to unaligned data. We support this, but only if the buffer in question
is mapped as normal memory (cached or not), but not to memory mapped as
strongly ordered or device type.
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D47485
These detach routines in these drivers all ended with 'return
(bus_generic_detach())' meaning that if any child device failed to
detach, the parent driver was left in a mostly destroyed state, but
still marked attached. Instead, bus drivers should detach child
drivers first and return errors before destroying driver state in the
parent.
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D47387
