When either makesyscalls.lua or syscalls.master changes, all of the
${GENERATED} targets are now out-of-date. With make jobs > 1, this means we
will run the makesyscalls script in parallel for the same ABI, generating
the same set of output files.
Prior to r356603 , there is a large window for interlacing output for some
of the generated files that we were generating in-place rather than staging
in a temp dir. After that, we still should't need to run the script more
than once per-ABI as the first invocation should update all of them. Add
.ORDER to do so cleanly.
Reviewed by: brooks
Discussed with: sjg
Differential Revision: https://reviews.freebsd.org/D23099
These will reportedly be used in future uma changes.
MFC after: 2 weeks
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D23019
The two switch regulator are always 3.0V.
Add a special case in get_voltage that if min=max we directly
return the value without calculating it.
Reviewed by: mmel
Differential Revision: https://reviews.freebsd.org/D23004
- Add all the Cortex-A CPU ID register values I can find.
- Add the Neoverse-N1 ID regiser value [1]
- Sort macros by register value.
PR: 243065
Submitted by: Ali Saidi <alisaidi AT amazon.com> [1]
Sponsored by: DARPA, AFRL (other than [1])
vm.kvm_size and vm.kvm_free are read only and marked as MPSAFE on i386
already. Mark them as that on amd64 and arm64 too to avoid locking Giant.
Reviewed by: kib (mentor)
Approved by: kib (mentor)
Differential Revision: https://reviews.freebsd.org/D23039
mapping to the old read-only page with a mapping to the new read-write page.
To destroy the old mapping, pmap_enter() must destroy its page table and PV
entries and invalidate its TLB entry. This change simply invalidates that
TLB entry a little earlier, specifically, on amd64 and arm64, before the PV
list lock is held.
Reviewed by: kib, markj
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D23027
syscall is to query the CPU number and the NUMA domain the calling
thread is currently running on. The third argument is ignored.
It doesn't do anything regarding scheduling - it's literally
just a way to query the current state, without any guarantees
you won't get rescheduled an opcode later.
This unbreaks Java from CentOS 8
(java-11-openjdk-11.0.5.10-0.el8_0.x86_64).
Reviewed by: kib
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D22972
entry's access flag and dirty state, and enable this feature when it's
available.
Ensure that we don't overlook a dirty state update that is concurrent
with a call to pmap_enter(). (Previously, all dirty state updates would
have occurred with the containing pmap's lock held, so a page table entry's
dirty state could not have changed while pmap_enter() held that same lock.)
Reviewed by: andrew, markj
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D22907
copy_file_range(2) is implemented natively since r350315, make it available
for Linux binaries too.
Reviewed by: kib (mentor), trasz (previous version)
Approved by: kib (mentor)
Differential Revision: https://reviews.freebsd.org/D22959
This driver configure the registers in the GRF according to the value
of the regulators for the platform.
Some IP can run with either 3.0V or 1.8V, if we don't configure them
correctly according to the external voltage used they will not work.
It's only done at boot time for now and might be needed at runtime for
IP like sdmmc.
Reviewed by: mmel
Tested On: RockPro64, Firefly-RK3399 (gonzo), AIO-3288 (mmel)
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D22854
The RK808 driver was missing the LDO and switch regulators.
Add support for them.
Reviewed by: mmel
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D22852
Due to clang and LLD's tendency to use a PLT for builtins, and as they
don't have full support for EABI, we sometimes have to deal with a PLT in
.ko files in a clang-built kernel.
As such, augment the in-kernel linker to support jump table processing.
As there is no particular reason to support lazy binding in kernel modules,
only implement Secure-PLT immediate binding.
As part of these changes, add elf_cpu_parse_dynamic() to the MD API of the
in-kernel linker (except on platforms that use raw object files.)
The new function will allow MD code to act on MD tags in _DYNAMIC.
Use this new function in the PowerPC MD code to ensure BSS-PLT modules using
PLT will be rejected during insertion, and to poison the runtime resolver to
ensure we get a clear panic reason if a call is made to the resolver.
Reviewed by: jhibbits
Differential Revision: https://reviews.freebsd.org/D22608
off the stack, initialized to default values, and then filled in with
driver-specific values, all without having to worry about the numerous
other fields in the tag. The resulting template is then passed into
busdma and the normal opaque tag object created. See the man page for
details on how to initialize a template.
Templates do not support tag filters. Filters have been broken for many
years, and only existed for an ancient make/model of hardware that had a
quirky DMA engine. Instead of breaking the ABI/API and changing the
arugment signature of bus_dma_tag_create() to remove the filter arguments,
templates allow us to ignore them, and also significantly reduce the
complexity of creating and managing tags.
Reviewed by: imp, kib
Differential Revision: https://reviews.freebsd.org/D22906
On arm64 the eret instruction is used to return from an exception handler.
Some implementations may speculate past this instruction into the next
function. As the user may control many registers in these functions add
a synchronisation barrier sequence after the eret instruction to stop these
CPUs from speculating out of the exception handler.
PR: 242676
Submitted by: Anthony Steinhauser <asteinhauser@google.com> (previous version)
MFC after: 1 week
incrementing (and decrementing) the ref_count on kernel page table pages.
They should not do this. Kernel page table pages are expected to have a
fixed ref_count. Address this problem by refactoring pmap_alloc{_l2,pde}()
and their callers. This also eliminates some duplicated code from the
callers.
Correctly implement PMAP_ENTER_NOREPLACE in pmap_enter_{l2,pde}() on kernel
mappings.
Reduce code duplication by defining a function, pmap_abort_ptp(), for
handling a common error case.
Handle a possible page table page leak in pmap_copy(). Suppose that we are
determining whether to copy a superpage mapping. If we abort because there
is already a mapping in the destination pmap at the current address, then
simply decrementing the page table page's ref_count is correct, because the
page table page must have a ref_count > 1. However, if we abort because we
failed to allocate a PV entry, this might be a just allocated page table
page that has a ref_count = 1, so we should call pmap_abort_ptp().
Simplify error handling in pmap_enter_quick_locked().
Reviewed by: kib, markj (an earlier)
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D22763
The maxpin counter starts at 0, fix one by one error.
This is still not totally correct for some banks in some SoC that have
fewer pins but this will be dealt with in another commit.
MFC after: 3 days
r351187 change the SYSCON_WRITE to SYSCON_MODIFY but didn't changed the
mask variable that used to hold the bitmask in the upper 16 bits of the
register that control which bits are changed. So we ended up clearing
bit from the upper 16bits half which are always 0 after a read.
Use the correct bit mask for bits that we want to clear.
MFC after: 3 days
fix an assert violation introduced in r355784. Without this spinlock_exit()
may see owepreempt and switch before reducing the spinlock count. amd64
had been optimized to do a single critical enter/exit regardless of the
number of spinlocks which avoided the problem and this optimization had
not been applied elsewhere.
Reported by: emaste
Suggested by: rlibby
Discussed with: jhb, rlibby
Tested by: manu (arm64)
than "/compat/linux". Useful when you have several compat directories
with different Linux versions and you don't want to clash with files
installed by linux-c7 packages.
Reviewed by: bcr (manpages)
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D22574
PHYS_TO_VM_PAGE() operation that always returns the same vm_page_t out of
the loop. (Since arm64 is configured as VM_PHYSSEG_SPARSE, the
implementation of PHYS_TO_VM_PAGE() is more costly than that of
VM_PHYSSEG_DENSE platforms, like amd64.)
MFC after: 1 week
Unfortunately, there are some limitations:
- memory aperture of his controller is only 16MiB, so it is nearly
unusable for graphic cards
- every attempt to generate type 1 config cycle always causes trap.
These config cycles are disabled now and we don't support cards
with PCIe switch.
- in some cases, attempt to do config cycle to (probably) not-yet ready
card also causes trap. This cannot be detected at runtime, but it seems
like very rare issue.
MFC after: 3 weeks
Differential Revision: https://reviews.freebsd.org/D22724
over the usual fsync(2).
This silences some warnings when running "apt-get upgrade".
Reviewed by: brooks, emaste
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D22371
This code is non-obvious when reading for the first time. To help with
understanding of it add comments explaining what it's doing.
While here use macros from armreg.h rather than magic numbers.
Sponsored by: DARPA, AFRL
Only bank 0 and bank 2 are different than other rockchip SoC, fix this.
While here remove some debug printfs that where added in r355648
MFC after: 3 days
X-MFC-With: r355648
Those clocks are always enable by default and are not really explained
in the TRM but the reason we had them is that they have the periph clock
as a parent and those parent should never be disable which can happen
if we disable all the childs. The current childs are the sd/emmc/sdio clocks
so the board will hang if we disable them.
MFC after: 1 month
We used to include the hisi version if soc_hisi_hi6220 was present,
include the altera version if dwmmc_altera was present and include
the rockchip version if soc_rockchip_rk3328 was present.
Now every version have it's own device directive.
The rockchip version isn't named dwmmc_rockchip because all other
rockchip driver are named rk_XXX.
MFC after: 1 month
This is a 32-bit structure embedded in each vm_page, consisting mostly
of page queue state. The use of a structure makes it easy to store a
snapshot of a page's queue state in a stack variable and use cmpset
loops to update that state without requiring the page lock.
This change merely adds the structure and updates references to atomic
state fields. No functional change intended.
Reviewed by: alc, jeff, kib
Sponsored by: Netflix, Intel
Differential Revision: https://reviews.freebsd.org/D22650
Partially revert r354741 and r354754 and go back to allocating a
fixed-size chunk of stack space for the auxiliary vector. Keep
sv_copyout_auxargs but change it to accept the address at the end of
the environment vector as an input stack address and no longer
allocate room on the stack. It is now called at the end of
copyout_strings after the argv and environment vectors have been
copied out.
This should fix a regression in r354754 that broke the stack alignment
for newer Linux amd64 binaries (and probably broke Linux arm64 as
well).
Reviewed by: kib
Tested on: amd64 (native, linux64 (only linux-base-c7), and i386)
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D22695
In some cases, like is locked bootstrap or device's inability to boot from
removable media, we cannot use standard boot sequence and is necessary to
boot kernel directly from U-Boot.
Discussed with: jhibbits
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D13861
Use the power of variable to avoid spelling out source and generated
files too many times. The previous Makefiles were hard to read, hard to
edit, and badly formatted.
Reviewed by: kevans, emaste
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D22714
Interrupt based driver, implements SPI mode and clock configuration.
Tested on espressobin and SG-3200.
Sponsored by: Rubicon Communications, LLC (Netgate)
preempted after an "ic" or "tlbi" instruction but before it performed a
"dsb" instruction. The "ic" and "tlbi" instructions have unusual
synchronization requirements. If the old thread migrates to a new
processor, its completion of a "dsb" instruction on that new processor does
not guarantee that the "ic" or "tlbi" instructions performed on the old
processor have completed.
This issue is not restricted to the kernel. Since locore.S sets the UCI bit
in SCTLR, user-space programs can perform "ic ivau" instructions (as well as
some forms of the "dc" instruction).
Reviewed by: andrew, kib, markj, mmel
X-MFC with: r355145
Differential Revision: https://reviews.freebsd.org/D22622
This controller is a bit tricky as the STOP condition must be indicated in
the last tranferred byte, some devices will not like the repeated start
behavior of this controller. A proper fix to this issue is in the works.
This driver works in polling mode, can be used early in the boot (required
in some cases).
Tested on espressobin/SG-1100 and the SG-3200.
Obtained from: pfSense
Sponsored by: Rubicon Communications, LLC (Netgate)
o Remove All Rights Reserved from my notices
o imp@FreeBSD.org everywhere
o regularize punctiation, eliminate date ranges
o Make sure that it's clear that I don't claim All Rights reserved by listing
All Rights Reserved on same line as other copyright holders (but not
me). Other such holders are also listed last where it's clear.
- Use ustringp for the location of the argv and environment strings
and allow destp to travel further down the stack for the stackgap
and auxv regions.
- Update the Linux copyout_strings variants to move destp down the
stack as was done for the native ABIs in r263349.
- Stop allocating a space for a stack gap in the Linux ABIs. This
used to hold translated system call arguments, but hasn't been used
since r159992.
Reviewed by: kib
Tested on: md64 (amd64, i386, linux64), i386 (i386, linux)
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D22501
RK3399 PLLs have three modes :
- Normal, where they behave normally and their freq is calculated based on
the registers values.
- Slow, where the PLL freq is 24Mhz (well, the external oscillator).
- Deep Slow, used for suspend where the freq is 32Khz.
We used to put every CPU related PLL in normal mode but it can cause problem
if the firmware didn't setup the clocks register correctly.
And even if it did but left the pll in slow or deep slow mode that might be
because the PMIC suppling voltage for the CPU haven't been configured yet
and we cannot do that at this point.
So remove the ability to set PLLs to normal mode at boot to avoid any problems.
After discussing with mmel@, it was clear this is insufficient to address
all the needs. mmel@ will commit his original patch, from
https://reviews.freebsd.org/D13861, and the additions needed from r354714
will be made afterward.
Requested by: mmel
Sponsored by: Juniper Networks, Inc.
