became unused in FreeBSD 12.x as a side-effect of the NUMA-related
changes.)
Reviewed by: kib, markj
Discussed with: jeff, re@
Differential Revision: https://reviews.freebsd.org/D16825
This is an amalgam of a patch by Doug Ambrisko to
generalize uart_acpi_find_device, imp moving the
ACPI table to uart_dev_ns8250.c and advice by jhb
to work around a bug in the EPYC 3151 BIOS
(the BIOS incorrectly marks the serial ports as
disabled)
Reviewed by: imp
MFC after: 8 weeks
Differential Revision: https://reviews.freebsd.org/D16432
Rather than hard-coding the number of CPUs to 2, look up the PVPE field
in MVPConf0, as the valid VPE numbers are from 0 to PVPE inclusive.
Submitted by: "James Clarke" <jrtc4@cam.ac.uk>
Reviewed by: br
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D16644
Move definitions from cpuregs.h into the cca.h, and include cca.h into vm.h.
This is required to make MIPS MD memattr definitions usable in userspace.
Sponsored by: The FreeBSD Foundation, Mellanox Technologies
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D15583
The timespecadd(3) family of macros were imported from NetBSD back in
r35029. However, they were initially guarded by #ifdef _KERNEL. In the
meantime, we have grown at least 28 syscalls that use timespecs in some
way, leading many programs both inside and outside of the base system to
redefine those macros. It's better just to make the definitions public.
Our kernel currently defines two-argument versions of timespecadd and
timespecsub. NetBSD, OpenBSD, and FreeDesktop.org's libbsd, however, define
three-argument versions. Solaris also defines a three-argument version, but
only in its kernel. This revision changes our definition to match the
common three-argument version.
Bump _FreeBSD_version due to the breaking KPI change.
Discussed with: cem, jilles, ian, bde
Differential Revision: https://reviews.freebsd.org/D14725
Track session objects in the framework, and pass handles between the
framework (OCF), consumers, and drivers. Avoid redundancy and complexity in
individual drivers by allocating session memory in the framework and
providing it to drivers in ::newsession().
Session handles are no longer integers with information encoded in various
high bits. Use of the CRYPTO_SESID2FOO() macros should be replaced with the
appropriate crypto_ses2foo() function on the opaque session handle.
Convert OCF drivers (in particular, cryptosoft, as well as myriad others) to
the opaque handle interface. Discard existing session tracking as much as
possible (quick pass). There may be additional code ripe for deletion.
Convert OCF consumers (ipsec, geom_eli, krb5, cryptodev) to handle-style
interface. The conversion is largely mechnical.
The change is documented in crypto.9.
Inspired by
https://lists.freebsd.org/pipermail/freebsd-arch/2018-January/018835.html .
No objection from: ae (ipsec portion)
Reported by: jhb
Doing so ensures that all threads sharing the pmap have a consistent
view of the mapping. This fixes the problem described in the commit
log message for r329254 without the overhead of an extra fault in the
common case. (Once the riscv pmap_enter() implementation is similarly
modified, the workaround added in r329254 can be removed, reducing the
overhead of CoW faults.)
See also r335784 for amd64. The mips implementation of pmap_enter()
already reused the PV entry from the old mapping.
Reviewed by: kib, markj
MFC after: 3 weeks
Differential Revision: https://reviews.freebsd.org/D16199
- Change pcpu zone consumers to use a stride size of PAGE_SIZE.
(defined as UMA_PCPU_ALLOC_SIZE to make future identification easier)
- Allocate page from the correct domain for a given cpu.
- Don't initialize pc_domain to non-zero value if NUMA is not defined
There are some misconceptions surrounding this field. It is the
_VM_ NUMA domain and should only ever correspond to valid domain
values as understood by the VM.
The former slab size of sizeof(struct pcpu) was somewhat arbitrary.
The new value is PAGE_SIZE because that's the smallest granularity
which the VM can allocate a slab for a given domain. If you have
fewer than PAGE_SIZE/8 counters on your system there will be some
memory wasted, but this is obviously something where you want the
cache line to be coming from the correct domain.
Reviewed by: jeff
Sponsored by: Limelight Networks
Differential Revision: https://reviews.freebsd.org/D15933
On arm64 (and possible other architectures) we are unable to use static
DPCPU data in kernel modules. This is because the compiler will generate
PC-relative accesses, however the runtime-linker expects to be able to
relocate these.
In preparation to fix this create two macros depending on if the data is
global or static.
Reviewed by: bz, emaste, markj
Sponsored by: ABT Systems Ltd
Differential Revision: https://reviews.freebsd.org/D16140
It looks like the intent was to allow ZSTD support to be
compiled into the kernel with options ZSTDIO. But it doesn't look
like that was ever implemented or I'm missing how to do it.
I did a cursory audit of kernel config files and made a decision to
enable ZSTDIO in riscv GENERIC and mips MALTA configurations. All other
kernel configurations already had this option in their kernel configs
but they didn't do anything useful as the feature was declared as
"standard" prior to this.
Reviewed by: cem allanjude
Differential Revision: https://reviews.freebsd.org/D16007
When 2GB of memory is enabled for QEMU's Malta emulation, the physical
memory ends at an address of 2^32 - 1. This causes an integer overflow
to zero when computing the upper bound of the second phys_avail[] range.
As a result, FreeBSD/mips kernels were only using the first 256MB of
RAM and ignoring the remaining 1.75GB. To work around this, truncate
the extended memory size to 2GB minus one page for 32-bit mips kernels.
Sponsored by: DARPA / AFRL
Differential Revision: https://reviews.freebsd.org/D16027
pmc_process_interrupt takes 5 arguments when only 3 are needed.
cpu is always available in curcpu and inuserspace can always be
derived from the passed trapframe.
While facially a reasonable cleanup this change was motivated
by the need to workaround a compiler bug.
core2_intr(cpu, tf) ->
pmc_process_interrupt(cpu, ring, pmc, tf, inuserspace) ->
pmc_add_sample(cpu, ring, pm, tf, inuserspace)
In the process of optimizing the tail call the tf pointer was getting
clobbered:
(kgdb) up
at /storage/mmacy/devel/freebsd/sys/dev/hwpmc/hwpmc_mod.c:4709
4709 pmc_save_kernel_callchain(ps->ps_pc,
(kgdb) up
1205 error = pmc_process_interrupt(cpu, PMC_HR, pm, tf,
resulting in a crash in pmc_save_kernel_callchain.
memcpy was an alias for bcopy with arg swap. This code handles
overlapping copies, so making memmove an alias is safe. We can
eliminate the call from libkern's memmove to this bcopy as a result.
Differential Revision: https://reviews.freebsd.org/D15374
This change updates arm, arm64 and mips achitectures. Additionally, it
removes redundant checks for kdb_active where it already results in
kdb_reenter() and adds kdb_reenter() calls where they were missing.
Some architectures check the return value of kdb_trap(), but some don't.
I haven't changed any of that.
Some trap handling routines have a return code. I am not sure if I
provided correct ones for returns after kdb_reenter(). kdb_reenter
should never return unless kdb_jmpbufp is NULL for some reason.
Only compile tested for all affected architectures. There can be bugs
resulting from my poor understanding of architecture specific details.
Reported by: jhb
Reviewed by: jhb, eadler
MFC after: 4 weeks
Differential Revision: https://reviews.freebsd.org/D15431
Dumpers may wish to print messages from an initialization hook; this
change ensures that such messages aren't mixed with output from the
generic dump code.
MFC after: 1 week
Note that GDB at least implements single stepping for MIPS using software
breakpoints explicitly rather than using PT_STEP, so this has only been
tested via tests in ptrace_test which now pass rather than fail.
- Fix several places to use uintptr_t instead of int for virtual addresses.
- Check for errors from ptrace_read_int() when setting a breakpoint for a
step.
- Properly check for errors from ptrace_write_int() as it returns non-zero,
not negative values on failure.
- Change the error returns for ptrace_read_int() and ptrace_write_int() from
ENOMEM to EFAULT.
- Clear a single step breakpoint when it traps rather than waiting for it
to be cleared from ptrace(). This matches the behavior of the arm port
and in general seems a bit more reliable than waiting for ptrace() to
clear it via FIX_SSTEP.
- Drop the PROC_LOCK around ptrace_write_int() in ptrace_clear_single_step()
since it can sleep.
- Reorder the breakpoint handler in trap() to only read the instruction if
the address matches the current thread's breakpoint address.
- Replace various #if 0'd debugging printfs with KTR_PTRACE traces.
Tested on: mips64
The MIPS ptrace_single_step() unlocks the PROC_LOCK while reading and
writing instructions from userland. One failure case was not reacquiring
the lock before returning.
- Use TRAP_TRACE for traps after stepping via PT_STEP.
- Use TRAP_BRKPT for software breakpoint traps and watchpoint traps.
This was tested via the recently added siginfo ptrace() tests. PT_STEP on
MIPS has several bugs that prevent it from working yet, but this does fix
the ptrace__breakpoint_siginfo test on MIPS.
Half of implementations always failed (returned (-1)) and they were
previously used in only one place.
Reviewed by: kib, andrew
Obtained from: CheriBSD
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D15102
Also remove the commented out documentation. The documentation arrived
with the import of the copy.9 manpage. I suspect the implementations
came from NetBSD while bootstrapping the Arm and MIPS ports.
Reviewed by: andrew, jmallett
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D15108
xdma(4) interface.
This allows us to switch between Altera mSGDMA or SoftDMA engines used by
atse(4) device.
This also makes atse(4) driver become 25% smaller.
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D9618
Change OF_getencprop_alloc semantics to be combination of malloc and
OF_getencprop and return size of the property, not number of elements
allocated.
For the use cases where number of elements is preferred introduce
OF_getencprop_alloc_multi helper function that copies semantics
of OF_getencprop_alloc prior to this change.
This is to make OF_getencprop_alloc and OF_getencprop_alloc_multi
function signatures consistent with OF_getencprop_alloc and
OF_getencprop_alloc_multi.
Functionality-wise this patch is mostly rename of OF_getencprop_alloc
to OF_getencprop_alloc_multi except two calls in ofw_bus_setup_iinfo
where 1 was used as a block size.
OF_getprop_alloc takes element size argument and returns number of
elements in the property. There are valid use cases for such behavior
but mostly API consumers pass 1 as element size to get string
properties. What API users would expect from OF_getprop_alloc is to be
a combination of malloc + OF_getprop with the same semantic of return
value. This patch modifies API signature to match these expectations.
For the valid use cases with element size != 1 and to reduce
modification scope new OF_getprop_alloc_multi function has been
introduced that behaves the same way OF_getprop_alloc behaved prior to
this patch.
Reviewed by: ian, manu
Differential Revision: https://reviews.freebsd.org/D14850
opt_compat.h is mentioned in nearly 180 files. In-progress network
driver compabibility improvements may add over 100 more so this is
closer to "just about everywhere" than "only some files" per the
guidance in sys/conf/options.
Keep COMPAT_LINUX32 in opt_compat.h as it is confined to a subset of
sys/compat/linux/*.c. A fake _COMPAT_LINUX option ensure opt_compat.h
is created on all architectures.
Move COMPAT_LINUXKPI to opt_dontuse.h as it is only used to control the
set of compiled files.
Reviewed by: kib, cem, jhb, jtl
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D14941
assym is only to be included by other .s files, and should never
actually be assembled by itself.
Reviewed by: imp, bdrewery (earlier)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D14180
Remove NO_FUEWORD so the 'e' variants are wrapped by the non-'e'
variants. This is more correct and leaves sparc64 as the outlier.
Reviewed by: jmallett, kib
Obtained from: CheriBSD
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D14603
correctly for the data contained on each memory page.
There are several components to this change:
* Add a variable to indicate the start of the R/W portion of the
initial memory.
* Stop detecting NX bit support for each AP. Instead, use the value
from the BSP and, if supported, activate the feature on the other
APs just before loading the correct page table. (Functionally, we
already assume that the BSP and all APs had the same support or
lack of support for the NX bit.)
* Set the RW and NX bits correctly for the kernel text, data, and
BSS (subject to some caveats below).
* Ensure DDB can write to memory when necessary (such as to set a
breakpoint).
* Ensure GDB can write to memory when necessary (such as to set a
breakpoint). For this purpose, add new MD functions gdb_begin_write()
and gdb_end_write() which the GDB support code can call before and
after writing to memory.
This change is not comprehensive:
* It doesn't do anything to protect modules.
* It doesn't do anything for kernel memory allocated after the kernel
starts running.
* In order to avoid excessive memory inefficiency, it may let multiple
types of data share a 2M page, and assigns the most permissions
needed for data on that page.
Reviewed by: jhb, kib
Discussed with: emaste
MFC after: 2 weeks
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D14282
We don't support float in the boot loaders, so don't include
interfaces for float or double in systems headers. In addition, take
the unusual step of spiking double and float to prevent any more
accidental seepage.
Make vm_wait() take the vm_object argument which specifies the domain
set to wait for the min condition pass. If there is no object
associated with the wait, use curthread' policy domainset. The
mechanics of the wait in vm_wait() and vm_wait_domain() is supplied by
the new helper vm_wait_doms(), which directly takes the bitmask of the
domains to wait for passing min condition.
Eliminate pagedaemon_wait(). vm_domain_clear() handles the same
operations.
Eliminate VM_WAIT and VM_WAITPFAULT macros, the direct functions calls
are enough.
Eliminate several control state variables from vm_domain, unneeded
after the vm_wait() conversion.
Scetched and reviewed by: jeff
Tested by: pho
Sponsored by: The FreeBSD Foundation, Mellanox Technologies
Differential revision: https://reviews.freebsd.org/D14384
significant source of cache line contention from vm_page_alloc(). Use
accessors and vm_page_unwire_noq() so that the mechanism can be easily
changed in the future.
Reviewed by: markj
Discussed with: kib, glebius
Tested by: pho (earlier version)
Sponsored by: Netflix, Dell/EMC Isilon
Differential Revision: https://reviews.freebsd.org/D14273
We don't support older compilers. Most of the code in these files is
for pre-3.0 gcc, which is at least 15 years obsolete. Move to using
phk's sys/_stdargs.h for all these platforms.
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D14323
The _Alignas specifier must come before the declaration and not after. It
works if _Alignas() expands to __attribute__(aligned(x)) which was the only
case I tested before.
Approved By: jhb (mentor)
global to per-domain state. Protect reservations with the free lock
from the domain that they belong to. Refactor to make vm domains more
of a first class object.
Reviewed by: markj, kib, gallatin
Tested by: pho
Sponsored by: Netflix, Dell/EMC Isilon
Differential Revision: https://reviews.freebsd.org/D14000
The compiler/linker can align fake_preload anyway it would like. When
building the kernel with gcc+bfd this always happened to be a multiple of 8.
When I built the kernel with clang and linked with lld fake_preload
happened to only be aligned to 4 bytes which caused a an ADDRS trap because
the compiler will emit sd instructions to store to this buffer.
Reviewed By: jhb, imp
Approved By: jhb (mentor)
Differential Revision: https://reviews.freebsd.org/D14018
The old way required the data to be present really early and copied it from
memory mapped NOR flash; this only worked during kernel boot but not for
ath/ath_hal modules.
Tested:
* AR9331, Carambola2, ath/hal modules.
- Add a new <machine/abi.h> header to hold constants shared between C
and assembly such as CALLFRAME_SZ.
- Add a new STACK_ALIGN constant to <machine/abi.h> and use it to
replace hardcoded constants in the kernel and makecontext(). As a
result of this, ensure the stack pointer on N32 and N64 is 16-byte
aligned for N32 and N64 after exec(), after pthread_create(), and
when sending signals rather than 8-byte aligned.
Reviewed by: jmallett
Sponsored by: DARPA / AFRL
Differential Revision: https://reviews.freebsd.org/D13875
Uses of mallocarray(9).
The use of mallocarray(9) has rocketed the required swap to build FreeBSD.
This is likely caused by the allocation size attributes which put extra pressure
on the compiler.
Given that most of these checks are superfluous we have to choose better
where to use mallocarray(9). We still have more uses of mallocarray(9) but
hopefully this is enough to bring swap usage to a reasonable level.
Reported by: wosch
PR: 225197
kernel by PHYS_TO_DMAP() as previously present on amd64, arm64, riscv, and
powerpc64. This introduces a new MI macro (PMAP_HAS_DMAP) that can be
evaluated at runtime to determine if the architecture has a direct map;
if it does not (or does) unconditionally and PMAP_HAS_DMAP is either 0 or
1, the compiler can remove the conditional logic.
As part of this, implement PHYS_TO_DMAP() on sparc64 and mips64, which had
similar things but spelled differently. 32-bit MIPS has a partial direct-map
that maps poorly to this concept and is unchanged.
Reviewed by: kib
Suggestions from: marius, alc, kib
Runtime tested on: amd64, powerpc64, powerpc, mips64
Focus on code where we are doing multiplications within malloc(9). None of
these ire likely to overflow, however the change is still useful as some
static checkers can benefit from the allocation attributes we use for
mallocarray.
This initial sweep only covers malloc(9) calls with M_NOWAIT. No good
reason but I started doing the changes before r327796 and at that time it
was convenient to make sure the sorrounding code could handle NULL values.
X-Differential revision: https://reviews.freebsd.org/D13837
allocated with a tag to come from the specified domain if it meets the
other constraints provided by the tag. Automatically create a tag at
the root of each bus specifying the domain local to that bus if
available.
Reviewed by: jhb, kib
Tested by: pho
Sponsored by: Netflix, Dell/EMC Isilon
Differential Revision: https://reviews.freebsd.org/D13545
domains can be done by the _domain() API variants. UMA also supports a
first-touch policy via the NUMA zone flag.
The slab layer is now segregated by VM domains and is precise. It handles
iteration for round-robin directly. The per-cpu cache layer remains
a mix of domains according to where memory is allocated and freed. Well
behaved clients can achieve perfect locality with no performance penalty.
The direct domain allocation functions have to visit the slab layer and
so require per-zone locks which come at some expense.
Reviewed by: Attilio (a slightly older version)
Tested by: pho
Sponsored by: Netflix, Dell/EMC Isilon
This permits N32 hard-float binaries to use 64-bit floating point
registers (which is what N32 binaries expect) matching the N64 ABI.
Reviewed by: imp, jmallett
Sponsored by: DARPA / AFRL
Differential Revision: https://reviews.freebsd.org/D13830
is now unobtanium. It's only had API changes in the last 7 years, and
is responsible for a very large number of them. In addition, there's a
lot of code that reimplements base FreeBSD functionality, diminishing
the chances it still works. Without hardware to teset it on, or
prospects of obtaining such hardware and without vendor support, it's
time to move on.
Suggested by: kan@ in mips@ retirement discussion
it's at least 5 years out of production. I couldn't find a used one on
ebay and other secondary markets just now, nor when I tried 4 years
ago. It dates from the initial project/mips2 merge 8 years ago, and
hasn't been updated since.
Discussed on: mips@ (with some dissent)
It came into the tree with the project/mips merge 8 years ago. At the
time, it was hard to find a board with enough RAM to run. Now FreeBSD
requires at least 2x the RAM it did then. No changes have happened to
this port apart from API churn and license tagging since then. It ran
OK at the time it was committed, but no sightings in the wild have
happened since shortly after it was committed.
https://www.linux-mips.org/wiki/Adm5120_devices lists a bunch of
boards that were available 5 years ago (but are no longer
available). The beefiest one had only 64MB of RAM which is too
small. The Mirktik RB1xx never had more than 32MB.
Also remove confusing QEMU config file that never ever worked in QEMU
for mips. MALTA is used for that. Another of my past mistakes, false
starts that never amounted to anything.
Discussed on: mips@ (with some dissent)
never got better. It never worked on real hardware and is still mostly
stubs after 8 years when I added it. It has had no real update in that
time apart from API churn. It was added just so it didn't get lost in
the project/mips merge, but maybe it should have been lost as nothing
has come of it. It is time to give up the ghost on this one.
Approved by: me, shooting my own dog
Discussed on: mips@
This compilation issue has been found thanks to freebsd-wifi-build:
- gpioiic requires "gpio_if.h", so "device gpio" is mandatory
- rtl8366rb works over MDIO interface, so "device mdio" is mandatory
Compilation is checked on FreeBSD 12-CURRENT machine.
The only users of the functions were db_read_bytes() and
db_write_bytes() ddb(4) interfaces. Replace the calls with direct
reads and writes, which are automatically atomic on 64bits and n32.
Note that removed assembler implementation for mips32 is not atomic
anyway.
Reviewed by: jhb
Discussed with: imp
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D13586
and atomic_store_64.
The MD definitions are provided for LP64 only, while mips also uses
them for 32bit and n32. Only define mips variants for 32bit and n32
and change the syntax to match common definitions.
Note that this commit does not fix 32bit asm implementation to follow
new KBI, this will be fixed later. The functions are only used for 8
byte ddb accesses so the known bug does not prevent normal kernel
operations.
Sponsored by: The FreeBSD Foundation
They provide relaxed-ordered atomic access semantic. Due to the
FreeBSD memory model, the operations are syntaxical wrappers around
the volatile accesses. The volatile qualifier is used to ensure that
the access not optimized out and in turn depends on the volatile
semantic as implemented by supported compilers.
The motivation for adding the operation is to help people coming from
other systems or knowing the C11/C++ standards where atomics have
special type and require use of the special access operations. It is
still the case that FreeBSD requires plain load and stores of aligned
integer types to be atomic.
Suggested by: jhb
Reviewed by: alc, jhb
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D13534
the expected default board_vendor value on MIPS SoCs.
This is required by bwn(4) to differentiate between single-band and
dual-band device variants that otherwise share a common chip ID.
Approved by: adrian (mentor, implicit)
Sponsored by: The FreeBSD Foundation
This variable should be pure MI except possibly for reading it in MD
dump routines. Its initialization was pure MD in 4.4BSD, but FreeBSD
changed this in r36441 in 1998. There were many imperfections in
r36441. This commit fixes only a small one, to simplify fixing the
others 1 arch at a time. (r47678 added support for
special/early/multiple message buffer initialization which I want in
a more general form, but this was too fragile to use because hacking
on the msgbufp global corrupted it, and was only used for 5 hours in
-current...)
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.
The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
The driver is functional on both BHND Wi-Fi adapters and MIPS SoCs, but
does not currently include support for features not required by bwn(4),
including GPIO interrupt handling.
Approved by: adrian (mentor, implicit)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D12708
The bwn(4) driver requires a number of extensions to the bhnd(4) PMU
interface to support external configuration of PLLs, LDOs, and other
parameters that require chipset or PHY-specific workarounds.
These changes add support for:
- Writing raw voltage register values to PHY-specific LDO regulator
registers (required by LP-PHY).
- Enabling/disabling PHY-specific LDOs (required by LP-PHY)
- Writing to arbitrary PMU chipctrl registers (required for common PHY PLL
reset support).
- Requesting chipset/PLL-specific spurious signal avoidance modes.
- Querying clock frequency and latency.
Additionally, rather than updating legacy PWRCTL support to conform to the
new PMU interface:
- PWRCTL API is now provided by a bhnd_pwrctl_if.m interface.
- Since PWRCTL is only found in older SSB-based chipsets, translation from
bhnd(4) bus APIs to corresponding PWRCTL operations is now handled
entirely within the siba(4) driver.
- The PWRCTL-specific host bridge clock gating APIs in bhnd_bus_if.m have
been lifted out into a standalone bhnd_pwrctl_hostb_if.m interface.
Approved by: adrian (mentor, implicit)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D12664
BHND Wi-Fi chipsets and SoCs share a common DMA engine, operating within
backplane address space. To support host DMA on Wi-Fi chipsets, the bridge
core maps host address space onto the backplane; any host addresses must
be translated to their corresponding backplane address.
- Defines a new bhnd_get_dma_translation(9) API to support querying DMA
address translation parameters from the bhnd(4) bus.
- Extends bhndb(4) to provide DMA translation descriptors from a DMA
address translation table defined in the host bridge-specific
bhndb_hwcfg.
- Defines bhndb(4) DMA address translation tables for all supported host
bridge cores.
- Extends mips/broadcom's bhnd_nexus driver to return an identity (no-op)
DMA translation descriptor; no translation is required when addressing
the SoC backplane.
Approved by: adrian (mentor)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D12582
On BHND MIPS SoCs, this replaces the use of hard-coded MIPS IRQ#s in the
common bhnd(4) core drivers; we now register an INTRNG child PIC that
handles routing of backplane interrupt vectors via the MIPS core.
On BHND PCI devices, backplane interrupt vectors are now routed to the
PCI/PCIe host bridge core when bus_setup_intr() is called, where they are
dispatched by the PCI core via a host interrupt (e.g. INTx/MSI).
The bhndb(4) bridge driver tracks registered interrupt handlers for the
bridged bhnd(4) devices and manages backplane interrupt routing, while
delegating actual bus interrupt setup/teardown to the parent bus on behalf
of the bridged cores.
Approved by: adrian (mentor, implicit)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D12518
This replaces a partial workaround introduced in r305527 that was
incompatible with nested INTRNG interrupt controllers if not also using
FDT.
On non-FDT MIPS INTRNG targets, we now preemptively produce a set of fixed
mappings for the MIPS IRQ range during nexus attach. On FDT targets,
OFW_BUS_MAP_INTR() remains responsible for mapping the MIPS IRQs.
Approved by: adrian (mentor)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D12385
Mainly focus on files that use BSD 3-Clause license.
The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.
The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.
Initially, only tag files that use BSD 4-Clause "Original" license.
RelNotes: yes
Differential Revision: https://reviews.freebsd.org/D13133
Summary:
ofw_parse_bootargs() was added in r306065 as an attempt to unify the
various copies of the same code. This simply migrates BERI to use it.
Reviewed By: brooks
Differential Revision: https://reviews.freebsd.org/D12962
similar to the kernel memory allocator.
This simplifies NUMA allocation because the domain will be known at wait
time and races between failure and sleeping are eliminated. This also
reduces boilerplate code and simplifies callers.
A wait primitive is supplied for uma zones for similar reasons. This
eliminates some non-specific VM_WAIT calls in favor of more explicit
sleeps that may be satisfied without new pages.
Reviewed by: alc, kib, markj
Tested by: pho
Sponsored by: Netflix, Dell/EMC Isilon
Failure modes of the modern (that is, produced in the last 25 years)
hard drives and SSDs made the utility outdated. Since the kernel
interface to support it was removed in r324853, cut the userspace
remnants as well.
Discussed with: bde (who does not like the removal)
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
RT2880 is MIPS4Kc SoC used in many SOHO routers. This commits adds GPIO pin
control configuration of RT2880.
Submitted by: Hiroki Mori <yamori83@yahoo.co.jp>
Reviewed by: mizhka, sgalabov
Differential Revision: https://reviews.freebsd.org/D12648
- allocate value for new AT_HWCAP2 auxiliary vector on all platforms.
- expand 'struct sysentvec' by new 'u_long *sv_hwcap2', in exactly
same way as for AT_HWCAP.
MFC after: 1 month
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D12699
HEAD. Enable VIMAGE in GENERIC kernels and some others (where GENERIC does
not exist) on HEAD.
Disable building LINT-VIMAGE with VIMAGE being default.
This should give it a lot more exposure in the run-up to 12 to help
us evaluate whether to keep it on by default or not.
We are also hoping to get better performance testing.
The feature can be disabled using nooptions.
Requested by: many
Reviewed by: kristof, emaste, hiren
X-MFC after: never
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D12639
Instead, use a runtime decision to handle COP1 traps. If floating point
support is present in the current CPU, enable saving of the floating point
state. If support is not present, fail with SIGILL.
Reviewed by: imp, br
Sponsored by: DARPA / AFRL
Differential Revision: https://reviews.freebsd.org/D12707
All of the kernel dump implementations keep track of the current offset
("dumplo") within the dump device. However, except for textdumps, they
all write the dump sequentially, so we can reduce code duplication by
having the MI code keep track of the current offset. The new
dump_append() API can be used to write at the current offset.
This is needed to implement support for kernel dump compression in the
MI kernel dump code.
Also simplify dump_encrypted_write() somewhat: use dump_write() instead
of duplicating its bounds checks, and get rid of the redundant offset
tracking.
Reviewed by: cem
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D11722
parser.
This allows us to use the EROM parser API in cases where the standard bus
space I/O APIs are unsuitable. In particular, this will allow us to parse
the device enumeration table directly from bhndb(4) drivers, prior to
full attach and configuration of the bridge.
Approved by: adrian (mentor)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D12510
Add bhnd(4) API for explicitly registering BHND platform devices (ChipCommon,
PMU, NVRAM, etc) with the bus, rather than walking the newbus hierarchy to
discover platform devices. These devices are now also refcounted; attempting
to deregister an actively used platform device will return EBUSY.
This resolves a lock ordering incompatibility with bwn(4)'s firmware loading
threads; previously it was necessary to acquire Giant to protect newbus access
when locating and querying the NVRAM device.
Approved by: adrian (mentor)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D12392
A new 'u_long *sv_hwcap' field is added to 'struct sysentvec'. A
process ABI can set this field to point to a value holding a mask of
architecture-specific CPU feature flags. If an ABI does not wish to
supply AT_HWCAP to processes the field can be left as NULL.
The support code for AT_EHDRFLAGS was already present on all systems,
just the #define was not present. This is a step towards unifying the
AT_* constants across platforms.
Reviewed by: kib
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D12290
in favor of just rendering the manpage instead of relying on pre-formatted
catpages. Note, this does not impede the ability to use existing catpages,
it just removes the utility to generate them.
Reviewed by: imp, allanjude
Approved by: emaste (mentor)
Differential Revision: https://reviews.freebsd.org/D12317
Turn on the required options in the ERL config file, and ensure
that the fbt module is listed as a dependency for mips in
the modules/dtrace/dtraceall/dtraceall.c file.
PR: 220346
Reviewed by: gnn, markj
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D12227
In particular, MIPS now has COMPAT_FREEBSD32 for n64 kernels so this
cannot be ignored for n64. On the other hand, it is unneeded for o32
MIPS kernels as the issue is only present when using 64-bit registers,
so remove the workaround from o32 kernels.
Reviewed by: jmallett
Sponsored by: DARPA / AFRL
redundant initializations.
Hard-code base = 0, height = (approx. 1/8 of the boot-time font height)
in all cases, and remove the BIOS/MD support for setting these values.
This asks for an underline cursor sized for the boot-time font instead
of various less hard-coded but worse values. I used that think that
the x86 BIOS always gave the same values as the above hard-coding, but
on 1 of my systems it gives the wrong value of base = 1.
The remaining BIOS fields are shift_state and bell_pitch. These are now
consistently not explicitly reinitialized to 0. All sc_get_bios_value()
functions except x86's are now empty, and the only useful thing that x86
returns is shift_state. This really belongs in atkbdc, but heavier
use of the BIOS to read the more useful typematic rate has been removed
there. fb still makes much heavier use of the BIOS.
This helps simplify the code in kern_shutdown.c and reduces the number
of globally visible functions.
No functional change intended.
Reviewed by: cem, def
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D11603
dump_start() and dump_finish() are responsible for writing kernel dump
headers, optionally writing the key when encryption is enabled, and
initializing the initial offset into the dump device.
Also remove the unused dump_pad(), and make some functions static now that
they're only called from kern_shutdown.c.
No functional change intended.
Reviewed by: cem, def
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D11584
* Add in the hints needed for AR933x ath(4) support - this is the nicer way
that allows ath to be a module;
* ATH_EEPROM_FIRMWARE is also required for all AR933x chipsets.
Tested:
* Carambola2, AR933x
--Remove special-case handling of sparc64 bus_dmamap* functions.
Replace with a more generic mechanism that allows MD busdma
implementations to generate inline mapping functions by
defining WANT_INLINE_DMAMAP in <machine/bus_dma.h>. This
is currently useful for sparc64, x86, and arm64, which all
implement non-load dmamap operations as simple wrappers
around map objects which may be bus- or device-specific.
--Remove NULL-checked bus_dmamap macros. Implement the
equivalent NULL checks in the inlined x86 implementation.
For non-x86 platforms, these checks are a minor pessimization
as those platforms do not currently allow NULL maps. NULL
maps were originally allowed on arm64, which appears to have
been the motivation behind adding arm[64]-specific barriers
to bus_dma.h, but that support was removed in r299463.
--Simplify the internal interface used by the bus_dmamap_load*
variants and move it to bus_dma_internal.h
--Fix some drivers that directly include sys/bus_dma.h
despite the recommendations of bus_dma(9)
Reviewed by: kib (previous revision), marius
Differential Revision: https://reviews.freebsd.org/D10729
This brings the default configurations (drivers, net80211 settings, etc) and some
of the shared configuration into std.AR_MIPS_BASE. I haven't yet moved the
-current settings (witness, memguard, etc) into it.
This should simplify building a lot of the same test images for my MIPS AP board
development and testing.
This is a work in progress; it's not designed to be perfect!
struct thread.
For all architectures, the syscall trap handlers have to allocate the
structure on the stack. The structure takes 88 bytes on 64bit arches
which is not negligible. Also, it cannot be easily found by other
code, which e.g. caused duplication of some members of the structure
to struct thread already. The change removes td_dbg_sc_code and
td_dbg_sc_nargs which were directly copied from syscall_args.
The structure is put into the copied on fork part of the struct thread
to make the syscall arguments information correct in the child after
fork.
This move will also allow several more uses shortly.
Reviewed by: jhb (previous version)
Sponsored by: The FreeBSD Foundation
MFC after: 3 weeks
X-Differential revision: https://reviews.freebsd.org/D11080
from machine/proc.h, consistently on all architectures.
Reviewed by: jhb
Sponsored by: The FreeBSD Foundation
MFC after: 3 weeks
X-Differential revision: https://reviews.freebsd.org/D11080
