I2C communication is done by a combination of driving a line low or
letting it float, so that it is either pulled up or driven low by
another party.
r355276 besides the stated goal of the change -- using the new GPIO API
-- also changed the logic, so that active state is signaled by actively
driving a line.
That worked with iicbb prior to r362042, but stopped working after that
commit on at least some hardware. My guess that the breakage was
related to getting an ACK bit. A device expected to be able to drive
SDA actively low, but controller was actively driving it high for some
time.
Anyway, this change seems to fix the problem.
Tested using gpioiic on Orange Pi PC Plus with HTU21 sensor.
Reported by: Nick Kostirya <nikolay.kostirya@i11.co>
Reviewed by: manu
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D25684
This new function allows us to find the SMMU instance assigned
for a particular PCI RID.
Reviewed by: andrew
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D25687
If the hypervisor advertises support for the DISCARD command then the
guest can perform TRIM commands, freeing space on the backing store.
If VIRTIO_BLK_F_DISCARD is enabled, advertise DISKFLAG_CANDELETE
Tested with FreeBSD guests on bhyve and KVM
Reviewed by: jhb
Tested by: freqlabs
MFC after: 1 month
Relnotes: yes
Sponsored by: Klara Inc.
Differential Revision: https://reviews.freebsd.org/D21708
pmc_cpuid was uninitialized for most AMD processor families. We can still
populate this string for unimplemented families.
Also added a CPUID_TO_STEPPING macro and converted existing code to use it.
Reviewed by: mav
MFC after: 2 weeks
Sponsored by: iXsystems, Inc.
Differential Revision: https://reviews.freebsd.org/D25673
It follows the equivalent Linux change to be able to differentiate
skylakex and cascadelakex, sharing the same model but not stepping.
This fixes skylakex handling broken by r363144.
MFC after: 6 days
The EIP-97 is a packet processing module found on the ESPRESSObin. This
commit adds a crypto(9) driver for the crypto and hash engine in this
device. An initial skeleton driver that could attach and submit
requests was written by loos and others at Netgate, and the driver was
finished by me.
Support for separate AAD and output buffers will be added in a separate
commit, to simplify merging to stable/12 (where those features don't
exist).
Reviewed by: gnn, jhb
Feedback from: andrew, cem, manu
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC (Netgate)
Differential Revision: https://reviews.freebsd.org/D25417
to coalesce tx work requests.
Note that Coverity will still treat this as an out-of-bounds access. We
do want to compare 16B starting from ethmacdst but cmp_l2hdr was was
going beyond that by 2B.
cmp_l2hdr was introduced in r362905.
Reported by: Coverity (CID 1430284)
Sponsored by: Chelsio Communications
Linux processes these clocks in reverse order and some DT relies
on this fact. For example, the frequency setting for a given PLL
is the last in the list, preceded by the frequency setting of its
following divider or so...
MFC after: 1 week
Every revision of twsi after the A20 have a bug where we need to
write again the control register after each interrupts. We also need
to add some delay before writing to this register, a simple read of the
same register does the job so do that.
Also fix the case when we have finish sending all the bytes, it only worked
for 1 byte transfer (the same kind that we do for talking to the PMIC on A20
boards).
While here add more debug messages and rework some of them.
This was tested by talking to a AT23C32 eeprom and a DS3231 RTC from an
H3 and A20 board.
PR: 247576
Reported by: Manuel Stühn (freebsd@justmail.de)
MFC after: 1 week
On some boards there is a lot of of syscon node that are unused as
more specific drivers is probed before, no need to flood the console
for the mostly-unused generic ones.
MFC after: 1 week
This adds support for the Broadcom bcm2711 PCI express controller, found
on the Raspberry Pi 4 (aka the bcm2838 SoC). The driver has only been
developed against the soldered-on VIA XHCI controller and not tested
with other end points.
Submitted by: Robert Crowston <crowston_protonmail.com>
Differential Revision: https://reviews.freebsd.org/D25068
Currently the linking order of the infiniband, IB, modules decide in which
order the clients are attached and detached. For example one IB client may
use resources from another IB client. This can lead to a potential deadlock
at shutdown. For example if the ipoib is unregistered after the ib_multicast
client is detached, then if ipoib is using multicast addresses a deadlock may
happen, because ib_multicast will wait for all its resources to be freed before
returning from the remove method.
Fix this by using module_xxx_order() instead of module_xxx().
Differential Revision: https://reviews.freebsd.org/D23973
MFC after: 1 week
Sponsored by: Mellanox Technologies
- Ask the firmware for the number of frames that can be stuffed in one
work request.
- Modify mp_ring to increase the likelihood of tx coalescing when there
are just one or two threads that are doing most of the tx. Add teeth
to the abdication mechanism by pushing the consumer lock into mp_ring.
This reduces the likelihood that a consumer will get stuck with all
the work even though it is above its budget.
- Add support for coalesced tx WR to the VF driver. This, with the
changes above, results in a 7x improvement in the tx pps of the VF
driver for some common cases. The firmware vets the L2 headers
submitted by the VF driver and it's a big win if the checks are
performed for a batch of packets and not each one individually.
Reviewed by: jhb@
MFC after: 2 weeks
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D25454
Use fence instead of barrier, which is optimized to take advantage of
the x86 TSO memory model.
Reviewed by: hselasky
Sponsored by: Mellanox Technologies
MFC after: 1 week
- Add CCM driver and clocks implementations for i.MX 8M
- Add GPC driver for iMX8
- Add clock tree for i.MX 8M Quad
- Add clocks support and new compat strings (where required) for existing i.MX 6 UART, I2C, and GPIO drivers
- Enable aarch64-compatible drivers form i.MX 6 in arm64 GENERIC kernel config
- Add dtb/imx8 kernel module with DTBs for Nitrogen8M and iMX8MQ EVK
With this patch both Nitrogen8M and iMX8MQ EVK boot with NFS root up to multiuser login prompt
Reviewed by: manu
Differential Revision: https://reviews.freebsd.org/D25274
Create an acpi attachment for the DWC USB OTG device. This is present in
the Raspberry Pi 4 in the USB-C port normally used to power the board. Some
firmware presents the kernel with ACPI tables rather than FDT so we need
an ACPI attachment.
Submitted by: Greg V <greg_unrelenting.technology>
Approved by: hselasky (removal of All rights reserved)
Differential Revision: https://reviews.freebsd.org/D25203
This is a flag from the MAC that says the received packet didn't match
a keycache slot. This isn't technically a problem as WEP keys don't
match keycache slots (they're "global" keys), but it could be useful
for tracking down CCMP decryption failures.
Right now it's a no-op - it mirrors what the AR9300 HAL does and it
just increments a counter. But, hey, maybe one day I'll use it for
diagnosing keycache/CCMP decrypt issues.
The only thing this tunable enables now is reporting to ACPI _OSC that
Active State Power Management and Clock Power Management Capability are
"supported" by the OS.
I've found that at least some Supermicro server boards do not allow OS
to support native PCIe hot-plug unless it reports those capabilities.
After spending significant time in PCIe specs I have found very little
motivation for that, and none of it applies to those motherboards, not
enabling ASPM themselves. So unless OS explicitly wants to save power,
I see nothing for it to do there actually.
I guess it may get sense to support ASPM when we get Thunderbolt support.
Otherwise I have no system with PCIe hot-plug where power saving matters.
It would be nice to enable this by default, but I worry that it affect
power saving of some laptops, even though I haven't noticed that myself.
Not all interrupt sources that affect CIS bit were acknowledged.
Specifically, bits in STATESTS (aka WAKESTS) were left set.
The fix is to disable WAKEEN and clear STATESTS bits before the HDA
interrupt is enabled. This way we should never get any STATESTS bits.
I also added placeholders for all event bits that we currently do not
enable, do not handle and do not clear. This might get useful when / if
we enable any of them.
Reported by: kib (Apollo Lake hardware)
Tested by: kib (earlier, different change)
MFC after: 2 weeks
X-MFC with: r362294
- Move temporary sglists into the session structure and protect them
with a per-session lock instead of a per-adapter lock.
- Retire an unused session field, and move a debugging field under
INVARIANTS to avoid using the session lock for completion handling
when INVARIANTS isn't enabled.
- Use counter_u64 for per-adapter statistics.
Note that this helps for cases where multiple sessions are used
(e.g. multiple IPsec SAs or multiple KTLS connections). It does not
help for workloads that use a single session (e.g. a single GELI
volume).
Reviewed by: np
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D25457
These bzero's should have been explicit_bzero's.
Reviewed by: cem, delphij
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D25437
In addition to reducing lines of code, this also ensures that the full
allocation is always zeroed avoiding possible bugs with incorrect
lengths passed to explicit_bzero().
Suggested by: cem
Reviewed by: cem, delphij
Approved by: csprng (cem)
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D25435
There were quite a few places where port_info was being accessed only to
get to the adapter.
Reviewed by: jhb@
MFC after: 1 week
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D25432
All vm_object_page_remove() callers, except
linux_invalidate_mapping_pages() in the LinuxKPI, free swap space when
removing a range of pages from an object. The LinuxKPI case appears to
be an unintentional omission that could result in leaked swap blocks, so
unconditionally free swap space in vm_object_page_remove() to protect
against similar bugs in the future.
Reviewed by: alc, kib
Tested by: pho
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25329
This is the key on the right side of the function keys, with the
"hamburger menu" icon on it.
Submitted by: GregV <greg@unrelenting.technology>
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D25390
This mode was added in r362496. Rename it to make the meaning more
clear.
PR: 247306
Suggested by: rpokala
Submitted by: Ali Abdallah <ali.abdallah@suse.com>
MFC with: r362496
The ACPI Specification defines a Generic Address Structure (GAS),
which is used to describe UART controller register layout in the
SPCR table. The driver responsible for parsing it (uart_cpu_acpi)
wrongly associates the Access Size field to the uart_bas's regshft
and the register BitWidth to the regiowidth - according to
the definitions it should be opposite.
This problem remained hidden most likely because the majority of platforms
use 32-bit registers (BitWidth) which are accessed with the according
size (Dword). However on Marvell Armada 8k / Cn913x platforms,
the 32-bit registers should be accessed with Byte granulity, which
unveiled the issue.
This patch fixes above by proper values assignment and slightly improved
parsing.
Note that handling of the AccessWidth set to EFI_ACPI_6_0_UNDEFINED is
needed to work around a buggy SPCR table on EC2 x86 "bare metal" instances.
Reviewed by: manu, imp, cperciva, greg_unrelenting.technology
Obtained from: Semihalf
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D25373
Networking is broken if the driver configures its (virtual) hardware to
use a hash algorithm (or a key) different from the one that the network
stack (software RSS) uses. This can be seen with connections initiated
from the host. The PCB will be placed into the hash table based on the
hash value calculated by the software. The hardware-calculated hash
value in reponse packets will be different, so the PCB won't be found.
Tested with a kernel compiled with 'options RSS' on an instance with ena
driver.
Reviewed by: mw, adrian
MFC after: 2 weeks
Sponsored by: Panzura
Differential Revision: https://reviews.freebsd.org/D24733
When the PCI address != physical address we need to translate from the
former to the latter before passing to the parent to map into the kernels
virtual address space.
Sponsored by: Innovate UK
It's interesting that similar messages from gpiobus_acquire_pin never
had any prefix while gpiobus_release_pin messages were prefixed with
"gpiobus_acquire_pin".
Anyway, the prefix is not that useful and can be deduced from context.
MFC after: 2 weeks
fibX_lookup_nh_ext().
fibX_lookup_nh_ represents pre-epoch generation of fib kpi,
providing less guarantees over pointer validness and requiring
on-stack data copying.
Reviewed by: np
Differential Revision: https://reviews.freebsd.org/D24975
