在 2024/2/26 10:09, Bitao Hu 写道:
We could use the irq_desc::tot_count member to avoid the summation
loop for interrupts which are not marked as 'PER_CPU' interrupts in
'show_interrupts'. This could reduce the time overhead of reading
/proc/interrupts.
Originally-by: Thomas Gleixner
Le 26/02/2024 à 20:09, Rick Edgecombe a écrit :
> Future changes will need to add a field to struct vm_unmapped_area_info.
> This would cause trouble for any archs that don't initialize the
> struct. Currently every user sets each field, so if new fields are
> added, the core code parsing the
Kunwu Chan writes:
> Thanks for the reply.
>
> On 2024/2/26 18:49, Michael Ellerman wrote:
>> Kunwu Chan writes:
>>> This part was commented from commit 6d492ecc6489
>>> ("powerpc/THP: Add code to handle HPTE faults for hugepages")
>>> in about 11 years before.
>>>
>>> If there are no plans to
在 2024/2/26 10:09, Bitao Hu 写道:
The soft lockup detector lacks a mechanism to identify interrupt storms
as root cause of a lockup. To enable this the detector needs a
mechanism to snapshot the interrupt count statistics on a CPU when the
detector observes a potential lockup scenario and
On Mon, Feb 26, 2024 at 9:55 PM Nicolas Dufresne
wrote:
>
> Le lundi 26 février 2024 à 16:28 +0800, Shengjiu Wang a écrit :
> > The audio sample format definition is from alsa,
> > the header file is include/uapi/sound/asound.h, but
> > don't include this header file directly, because in
> > user
On Mon, Feb 26, 2024 at 9:55 PM Nicolas Dufresne wrote:
>
> Le lundi 26 février 2024 à 16:28 +0800, Shengjiu Wang a écrit :
> > The audio sample format definition is from alsa,
> > the header file is include/uapi/sound/asound.h, but
> > don't include this header file directly, because in
> > user
Thanks for the reply.
On 2024/2/26 18:49, Michael Ellerman wrote:
Kunwu Chan writes:
This part was commented from commit 6d492ecc6489
("powerpc/THP: Add code to handle HPTE faults for hugepages")
in about 11 years before.
If there are no plans to enable this part code in the future,
we can
On 2/25/24 22:55, Stephen Rothwell wrote:
> Hi all,
>
> Changes since 20240223:
>
on powerpc32:
In file included from ./arch/powerpc/include/generated/asm/div64.h:1,
from ../include/linux/math.h:6,
from ../include/linux/kernel.h:27,
from
On Tue, Feb 27, 2024 at 12:15 AM Arnd Bergmann wrote:
>
> From: Arnd Bergmann
>
> Most architectures only support a single hardcoded page size. In order
> to ensure that each one of these sets the corresponding Kconfig symbols,
> change over the PAGE_SHIFT definition to the common one and allow
https://bugzilla.kernel.org/show_bug.cgi?id=207129
--- Comment #9 from Erhard F. (erhar...@mailbox.org) ---
Created attachment 305910
--> https://bugzilla.kernel.org/attachment.cgi?id=305910=edit
kernel .config (6.8-rc6, KASAN_INLINE=y, PowerMac G4 DP)
--
You may reply to this email to add a
https://bugzilla.kernel.org/show_bug.cgi?id=207129
Erhard F. (erhar...@mailbox.org) changed:
What|Removed |Added
Status|CLOSED |REOPENED
Future changes will need to add a field to struct vm_unmapped_area_info.
This would cause trouble for any archs that don't initialize the
struct. Currently every user sets each field, so if new fields are
added, the core code parsing the struct will see garbage in the new
field.
It could be
Le 26/02/2024 à 17:14, Arnd Bergmann a écrit :
> From: Arnd Bergmann
>
> arc, arm64, parisc and powerpc all have their own Kconfig symbols
> in place of the common CONFIG_PAGE_SIZE_4KB symbols. Change these
> so the common symbols are the ones that are actually used, while
> leaving the
Le 26/02/2024 à 17:14, Arnd Bergmann a écrit :
> From: Arnd Bergmann
>
> These four architectures define the same Kconfig symbols for configuring
> the page size. Move the logic into a common place where it can be shared
> with all other architectures.
>
> Signed-off-by: Arnd Bergmann
> ---
Le 26/02/2024 à 17:14, Arnd Bergmann a écrit :
> From: Arnd Bergmann
>
> The recent change to the vdso_data_store broke building compat VDSO
> on at least arm64 because it includes headers outside of the include/vdso/
> namespace:
I understand that powerpc64 also has an issue, see
On Sat, Feb 24, 2024 at 12:24:16PM +0530, Manivannan Sadhasivam wrote:
> All of the APIs are missing the Kernel-doc comments. Hence, add them.
>
> Signed-off-by: Manivannan Sadhasivam
Reviewed-by: Frank Li
> ---
> drivers/pci/controller/dwc/pcie-designware-ep.c | 92
>
On Sat, Feb 24, 2024 at 12:24:15PM +0530, Manivannan Sadhasivam wrote:
> Now that the API is available, let's make use of it. It also handles the
> reinitialization of DWC non-sticky registers in addition to sending the
> notification to EPF drivers.
>
> Signed-off-by: Manivannan Sadhasivam
>
On Sun, 25 Feb 2024 22:01:50 +0530
Sachin Sant wrote:
> While running ftrace specific kernel selftests following warning
> is seen on a Power10 logical partition (LPAR) booted with
> latest mainline kernel.
>
> [ cut here ]
> precision 63492 too large
> WARNING: CPU: 15
On Sat, Feb 24, 2024 at 12:24:14PM +0530, Manivannan Sadhasivam wrote:
> The PCIe link can go to LINK_DOWN state in one of the following scenarios:
>
> 1. Fundamental (PERST#)/hot/warm reset
> 2. Link transition from L2/L3 to L0
>From L0 to L2/l3
>
> In those cases, LINK_DOWN causes some
On Sat, Feb 24, 2024 at 12:24:13PM +0530, Manivannan Sadhasivam wrote:
> "core_init_notifier" flag is set by the glue drivers requiring refclk from
> the host to complete the DWC core initialization. Also, those drivers will
> send a notification to the EPF drivers once the initialization is fully
On Sat, Feb 24, 2024 at 12:24:12PM +0530, Manivannan Sadhasivam wrote:
> Currently, dw_pcie_ep_init_registers() API is directly called by the glue
> drivers requiring active refclk from host. But for the other drivers, it is
> getting called implicitly by dw_pcie_ep_init(). This is due to the fact
On Sat, Feb 24, 2024 at 12:24:11PM +0530, Manivannan Sadhasivam wrote:
> The goal of the dw_pcie_ep_init_complete() API is to initialize the DWC
> specific registers post registering the controller with the EP framework.
>
> But the naming doesn't reflect its functionality and causes confusion.
On Sat, Feb 24, 2024 at 12:24:10PM +0530, Manivannan Sadhasivam wrote:
> The DWC glue drivers requiring an active reference clock from the PCIe host
> for initializing their PCIe EP core, set a flag called 'core_init_notifier'
> to let DWC driver know that these drivers need a special attention
On 2024-02-26 10:14 AM, Arnd Bergmann wrote:
> From: Arnd Bergmann
>
> These four architectures define the same Kconfig symbols for configuring
> the page size. Move the logic into a common place where it can be shared
> with all other architectures.
>
> Signed-off-by: Arnd Bergmann
> ---
>
On Sat, Feb 24, 2024 at 12:24:09PM +0530, Manivannan Sadhasivam wrote:
> For DWC glue drivers supporting PERST# (currently Qcom and Tegra194), some
> of the DWC resources like eDMA should be cleaned up during the PERST#
> assert time.
>
> So let's introduce a dw_pcie_ep_cleanup() API that could
On Sat, Feb 24, 2024 at 12:24:08PM +0530, Manivannan Sadhasivam wrote:
> dw_pcie_ep_exit() API is undoing what the dw_pcie_ep_init() API has done
> already (at least partly). But the API name dw_pcie_ep_exit() is not quite
> reflecting that. So let's rename it to dw_pcie_ep_deinit() to make the
>
On Sat, Feb 24, 2024 at 12:24:07PM +0530, Manivannan Sadhasivam wrote:
> deinit() callback was solely introduced for the pcie-rcar-gen4 driver where
> it is used to do platform specific resource deallocation. And this callback
> is called right at the end of the dw_pcie_ep_exit() API. So it
From: Arnd Bergmann
The recent change to the vdso_data_store broke building compat VDSO
on at least arm64 because it includes headers outside of the include/vdso/
namespace:
In file included from arch/arm64/include/asm/lse.h:5,
from arch/arm64/include/asm/cmpxchg.h:14,
From: Arnd Bergmann
Most architectures only support a single hardcoded page size. In order
to ensure that each one of these sets the corresponding Kconfig symbols,
change over the PAGE_SHIFT definition to the common one and allow
only the hardware page size to be selected.
Signed-off-by: Arnd
From: Arnd Bergmann
arc, arm64, parisc and powerpc all have their own Kconfig symbols
in place of the common CONFIG_PAGE_SIZE_4KB symbols. Change these
so the common symbols are the ones that are actually used, while
leaving the arhcitecture specific ones as the user visible
place for
From: Arnd Bergmann
These four architectures define the same Kconfig symbols for configuring
the page size. Move the logic into a common place where it can be shared
with all other architectures.
Signed-off-by: Arnd Bergmann
---
arch/Kconfig | 58
From: Arnd Bergmann
Naresh noticed that the newly added usage of the PAGE_SIZE macro in
include/vdso/datapage.h introduced a build regression. I had an older
patch that I revived to have this defined through Kconfig rather than
through including asm/page.h, which is not allowed in vdso code.
I
Le lundi 26 février 2024 à 16:28 +0800, Shengjiu Wang a écrit :
> The audio sample format definition is from alsa,
> the header file is include/uapi/sound/asound.h, but
> don't include this header file directly, because in
> user space, there is another copy in alsa-lib.
> There will be conflict
On 26/02/2024 11.11, Nicholas Piggin wrote:
getchar() didn't get the shift value correct and never returned the
first character. This never really mattered since it was only ever
used for press-a-key-to-continue prompts. but it tripped me up when
debugging a QEMU console output problem.
On 26/02/2024 11.11, Nicholas Piggin wrote:
KVM does not like to run on POWER9 hosts without cap-ccf-assist=off.
Signed-off-by: Nicholas Piggin
---
powerpc/run | 2 ++
1 file changed, 2 insertions(+)
diff --git a/powerpc/run b/powerpc/run
index e469f1eb3..5cdb94194 100755
--- a/powerpc/run
https://bugzilla.kernel.org/show_bug.cgi?id=207129
Michael Ellerman (mich...@ellerman.id.au) changed:
What|Removed |Added
Status|RESOLVED|CLOSED
--
https://bugzilla.kernel.org/show_bug.cgi?id=207129
Michael Ellerman (mich...@ellerman.id.au) changed:
What|Removed |Added
Status|NEW |RESOLVED
https://bugzilla.kernel.org/show_bug.cgi?id=155231
Michael Ellerman (mich...@ellerman.id.au) changed:
What|Removed |Added
Status|RESOLVED|CLOSED
--
https://bugzilla.kernel.org/show_bug.cgi?id=155231
Michael Ellerman (mich...@ellerman.id.au) changed:
What|Removed |Added
Status|NEEDINFO|RESOLVED
Kunwu Chan writes:
> This part was commented from commit 6d492ecc6489
> ("powerpc/THP: Add code to handle HPTE faults for hugepages")
> in about 11 years before.
>
> If there are no plans to enable this part code in the future,
> we can remove this dead code.
I agree the code can go. But I'd
CONFIG_KEXEC_FILE does not have to select CONFIG_CRASH_DUMP. Move
some code under CONFIG_CRASH_DUMP to support CONFIG_KEXEC_FILE and
!CONFIG_CRASH_DUMP case.
Signed-off-by: Hari Bathini
---
* No changes in v2.
arch/powerpc/kexec/elf_64.c | 4 +-
arch/powerpc/kexec/file_load_64.c | 269
Remove CONFIG_CRASH_DUMP dependency on CONFIG_KEXEC. CONFIG_KEXEC_CORE
was used at places where CONFIG_CRASH_DUMP or CONFIG_CRASH_RESERVE was
appropriate. Replace with appropriate #ifdefs to support CONFIG_KEXEC
and !CONFIG_CRASH_DUMP configuration option. Also, make CONFIG_FA_DUMP
dependent on
This patch series is a follow-up to [1] based on discussions at [2]
about additional work needed to get it working on powerpc.
The first patch in the series makes struct crash_mem available with or
without CONFIG_CRASH_DUMP enabled. The next patch moves kdump specific
code for kexec_file_load
struct crash_mem defined under include/linux/crash_core.h represents
a list of memory ranges. While it is used to represent memory ranges
for kdump kernel, it can also be used for other kind of memory ranges.
In fact, KEXEC_FILE_LOAD syscall in powerpc uses this structure to
represent reserved
This adds testing for the powernv machine, and adds a gitlab-ci test
group instead of specifying all tests in .gitlab-ci.yml.
Signed-off-by: Nicholas Piggin
---
.gitlab-ci.yml| 16 ++--
powerpc/unittests.cfg | 15 ---
2 files changed, 14 insertions(+), 17
This moves merges ppc64 directories and files into powerpc, and
merges the 3 makefiles into one.
The configure --arch=powerpc option is aliased to ppc64 for
good measure.
Signed-off-by: Nicholas Piggin
---
MAINTAINERS| 1 -
configure
arch_libdir was brought in to improve the heuristic determination of
the lib/ directory based on arch and testdir names, but it did not
entirely clean that mess up.
Remove the arch_libdir->arch->testdir heuristic and just require
everybody sets arch_libdir correctly. Fail if the lib/arch or
configure will accept an unknown arch, and if it is the name of a
directory in the source tree the command will silently succeed. Make
it only accept supported arch names.
Also print the full path of a missing test directory to disambiguate
the error in out of tree builds.
Cc: Alexandru Elisei
Add some initial PMU testing.
- PMC5/6 tests
- PMAE / PMI test
- BHRB basic tests
Signed-off-by: Nicholas Piggin
---
lib/powerpc/asm/processor.h | 2 +
lib/powerpc/asm/reg.h | 9 +
lib/powerpc/asm/setup.h | 1 +
lib/powerpc/setup.c | 23 +++
powerpc/Makefile.common
The biggest difficulty for user mode is MMU support. Otherwise it is
a simple matter of setting and clearing MSR[PR] with rfid and sc
respectively.
Some common harness operations will fail in usermode, so some workarounds
are reqiured (e.g., puts() can't be used directly).
A usermode privileged
Now that sieve copes with lack of MMU support, it can be run by
powerpc.
Signed-off-by: Nicholas Piggin
---
powerpc/Makefile.common | 1 +
powerpc/sieve.c | 1 +
powerpc/unittests.cfg | 3 +++
3 files changed, 5 insertions(+)
create mode 12 powerpc/sieve.c
diff --git
Not all powerpc CPUs provide MMU support. Define vm_available() that is
true by default but archs can override it. Use this to run VM tests.
Cc: Paolo Bonzini
Cc: Thomas Huth
Cc: Andrew Jones
Cc: k...@vger.kernel.org
Signed-off-by: Nicholas Piggin
---
common/sieve.c | 14 --
There is no good reason to put setup_vm in libcflat.h when it's
defined in vmalloc.h.
Cc: Paolo Bonzini
Cc: Thomas Huth
Cc: Andrew Jones
Cc: Janosch Frank
Cc: Claudio Imbrenda
Cc: Nico Böhr
Cc: David Hildenbrand
Cc: k...@vger.kernel.org
Cc: linux-s...@vger.kernel.org
Signed-off-by:
Add support for radix MMU, 4kB and 64kB pages.
This also adds MMU interrupt test cases, and runs the interrupts
test entirely with MMU enabled if it is available (aside from
machine check tests).
Signed-off-by: Nicholas Piggin
---
configure | 39 +++--
This has a known failure on QEMU TCG machines where the decrementer
interrupt is not lowered when the DEC wraps from -ve to +ve.
Signed-off-by: Nicholas Piggin
---
lib/powerpc/asm/reg.h | 1 +
powerpc/Makefile.common | 1 +
powerpc/timebase.c | 330
Signed-off-by: Nicholas Piggin
---
powerpc/Makefile.common | 1 +
powerpc/atomics.c | 373
powerpc/unittests.cfg | 9 +
3 files changed, 383 insertions(+)
create mode 100644 powerpc/atomics.c
diff --git a/powerpc/Makefile.common
The test harness uses spinlocks if they are implemented with larx/stcx.
it can prevent some test scenarios such as testing migration of a
reservation.
Signed-off-by: Nicholas Piggin
---
lib/powerpc/asm/smp.h| 1 +
lib/powerpc/smp.c| 5 +
lib/powerpc/spinlock.c | 28
Modify run script to permit single vs mttcg threading, add a
thread=single smp case to unittests.cfg.
Signed-off-by: Nicholas Piggin
---
powerpc/run | 4 ++--
powerpc/unittests.cfg | 6 ++
2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/powerpc/run b/powerpc/run
powerpc SMP support is very primitive and does not set up a first-class
runtime environment for secondary CPUs.
This reworks SMP support, and provides a complete C and harness
environment for the secondaries, including interrupt handling, as well
as IPI support.
Signed-off-by: Nicholas Piggin
In SMP tests, it's possible for multiple CPUs to print an exit
message if they abort concurrently, confusing the harness:
EXIT: STATUS=127
EXIT: STATUS=127
scripts/arch-run.bash: line 85: [: too many arguments
scripts/arch-run.bash: line 93: return: too many arguments
lib/arch code
The exception stack setup does not work correctly for SMP, because
it is the boot processor that calls cpu_set() which sets SPRG2 to
the exception stack, not the target CPU itself. So secondaries
never got their SPRG2 set to a valid exception stack.
Remove the SMP code and just set an exception
In preparation for improved SMP support, add stop-self support to the
harness. This is non-trivial because it requires an unlocked rtas
call: a CPU can't be holding a spin lock when it goes offline or it
will deadlock other CPUs. rtas permits stop-self to be called without
serialising all other
Add basic testing of various kinds of interrupts, machine check,
page fault, illegal, decrementer, trace, syscall, etc.
This has a known failure on QEMU TCG pseries machines where MSR[ME]
can be incorrectly set to 0.
Signed-off-by: Nicholas Piggin
---
lib/powerpc/asm/processor.h | 4 +
This enables HV privilege registers to be tested with the powernv
machine.
Acked-by: Thomas Huth
Signed-off-by: Nicholas Piggin
---
powerpc/sprs.c | 33 +
1 file changed, 25 insertions(+), 8 deletions(-)
diff --git a/powerpc/sprs.c b/powerpc/sprs.c
index
Illegal instructions cause 0xe40 (HEAI) interrupts rather
than program interrupts.
Acked-by: Thomas Huth
Signed-off-by: Nicholas Piggin
---
lib/powerpc/asm/processor.h | 1 +
lib/powerpc/setup.c | 13 +
powerpc/emulator.c | 21 -
3 files
Add support for QEMU's powernv machine. This uses standard firmware
(skiboot) rather than a minimal firmware shim.
Reviewed-by: Cédric Le Goater
Signed-off-by: Nicholas Piggin
---
lib/powerpc/asm/processor.h | 23 +++
lib/powerpc/asm/reg.h | 4 ++
lib/powerpc/hcall.c |
The QEMU powerpc powernv machine has minor differences that must be
accommodated for in output parsing:
- Summary parsing must search more lines of output for the summary
line, to accommodate OPAL message on shutdown.
- Premature failure testing must tolerate case differences in kernel
load
This allows different machines with different requirements to be
supported by run_tests.sh, similarly to how different accelerators
are handled.
Acked-by: Thomas Huth
Signed-off-by: Nicholas Piggin
---
scripts/common.bash | 8 ++--
scripts/runtime.bash | 16
2 files
Storing certain values in MMCR0 can cause PMU interrupts when msleep
enables MSR[EE], and this crashes the test. Freeze the PMU counters
and clear any PMU exception before calling msleep.
Signed-off-by: Nicholas Piggin
---
lib/powerpc/asm/reg.h | 4
powerpc/sprs.c| 17
SPRs annotated with SPR_HARNESS can change between consecutive reads
because the test harness code has changed them. Avoid failing the
test in this case.
Signed-off-by: Nicholas Piggin
---
powerpc/sprs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/powerpc/sprs.c
A significant rework that builds an array of 'struct spr', where each
element describes an SPR. This makes various metadata about the SPR
like name and access type easier to carry and use.
Hypervisor privileged registers are described despite not being used
at the moment for completeness, but
Move SPR and MSR defines out of ppc_asm.h and processor.h and into a
new include, asm/reg.h.
Add a define for the PVR SPR and various processor versions, and replace
the open coded numbers in the sprs.c test case.
Signed-off-by: Nicholas Piggin
---
lib/powerpc/asm/ppc_asm.h | 8 +---
Add support for backtracing across interrupt stacks, and
add interrupt frame backtrace for unhandled interrupts.
Signed-off-by: Nicholas Piggin
---
lib/powerpc/processor.c | 4 ++-
lib/ppc64/asm/stack.h | 3 +++
lib/ppc64/stack.c | 55 +
The backtrace handler terminates when it sees a NULL caller address,
but the powerpc stack setup does not keep such a NULL caller frame
at the start of the stack.
This happens to work on pseries because the memory at 0 is mapped and
it contains 0 at the location of the return address pointer if
getchar() didn't get the shift value correct and never returned the
first character. This never really mattered since it was only ever
used for press-a-key-to-continue prompts. but it tripped me up when
debugging a QEMU console output problem.
Signed-off-by: Nicholas Piggin
---
KVM does not like to run on POWER9 hosts without cap-ccf-assist=off.
Signed-off-by: Nicholas Piggin
---
powerpc/run | 2 ++
1 file changed, 2 insertions(+)
diff --git a/powerpc/run b/powerpc/run
index e469f1eb3..5cdb94194 100755
--- a/powerpc/run
+++ b/powerpc/run
@@ -24,6 +24,8 @@
This is the same familiar set of powerpc patches, it's taken a
while to get them merged. And unfortunately they keep growing
with fixes and new tests.
This goes on top of the previous migration and other core
patches. Full tree can be found here.
This test stores to a bunch of pages and verifies previous stores,
while being continually migrated. This can fail due to a QEMU TCG
physical memory dirty bitmap bug.
Signed-off-by: Nicholas Piggin
---
common/memory-verify.c | 48 +
The migration harness is complicated and easy to break so CI will
be helpful.
Signed-off-by: Nicholas Piggin
---
.gitlab-ci.yml | 18 +++---
1 file changed, 11 insertions(+), 7 deletions(-)
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 71d986e98..61f196d5d 100644
---
The cooperative migration protocol is very good to control precise
pre and post conditions for a migration event. However in some cases
its intrusiveness to the test program, can mask problems and make
analysis more difficult.
For example to stress test migration vs concurrent complicated
memory
This matches s390x clock and delay APIs, so common test code can start
using time facilities.
Signed-off-by: Nicholas Piggin
---
lib/powerpc/asm/processor.h | 21 -
lib/powerpc/asm/time.h | 30 ++
lib/powerpc/processor.c | 11 +++
Have tests use the new migrate_skip command in skip paths, rather than
calling migrate_once to prevent harness reporting an error.
s390x/migration.c adds a new command that looks like it was missing
previously.
Signed-off-by: Nicholas Piggin
---
arm/gic.c | 21
Tests that are run with MIGRATION=yes but skip due to some requirement
not being met will show as a failure due to the harness requirement to
see one successful migration. The workaround for this is to migrate in
test's skip path. Add a new command that just tells the harness to not
expect a
The infifo fifo that is used to send characters to QEMU console is
only able to receive one character before the cat process exits.
Supporting interactions between test and harness involving multiple
characters requires the fifo to remain open.
This also allows us to let the cat out of the bag,
This series applies on top of the multi-migration patches and just
has assorted things I've been collecting.
- New migrate_skip() command that tidies up the wart of using
migrate_once() to skip migration.
- New "continuous migration" mode where the harness just
migrates the test contually
On Mon Feb 26, 2024 at 12:20 AM EET, Richard Weinberger wrote:
> Mimi, James, Jarkko, David,
>
> you remained silent for a whole release cycle.
> Is there anything we can do to get this forward?
>
> Thanks,
> //richard
Thanks for reminding.
>From my side, I've had pretty busy month as I've
On 26/02/2024 09.10, Nicholas Piggin wrote:
On Fri Feb 23, 2024 at 5:06 PM AEST, Thomas Huth wrote:
On 21/02/2024 04.27, Nicholas Piggin wrote:
Now that strange arm64 hang is found to be QEMU bug, I'll repost.
Since arm64 requires Thomas's uart patch and it is worse affected
by the QEMU bug, I
Add fixed point test controls, one is for Q4.16 format
another one is for Q63 format.
Signed-off-by: Shengjiu Wang
---
drivers/media/test-drivers/vivid/vivid-core.h | 2 ++
.../media/test-drivers/vivid/vivid-ctrls.c| 26 +++
include/media/v4l2-ctrls.h|
The audio sample format definition is from alsa,
the header file is include/uapi/sound/asound.h, but
don't include this header file directly, because in
user space, there is another copy in alsa-lib.
There will be conflict in userspace for include
videodev2.h & asound.h and asoundlib.h
Here still
Audio memory to memory virtual driver use video memory to memory
virtual driver vim2m.c as example. The main difference is
device type is VFL_TYPE_AUDIO and device cap type is V4L2_CAP_AUDIO_M2M.
The device_run function is a dummy function, which is simply
copy the data from input buffer to
Implement the ASRC memory to memory function using
the v4l2 framework, user can use this function with
v4l2 ioctl interface.
User send the output and capture buffer to driver and
driver store the converted data to the capture buffer.
This feature can be shared by ASRC and EASRC drivers
Audio signal processing also has the requirement for memory to
memory similar as Video.
This asrc memory to memory (memory ->asrc->memory) case is a non
real time use case.
User fills the input buffer to the asrc module, after conversion, then asrc
sends back the output buffer to user. So it is
Move fsl_asrc_common.h to include/sound that it can be
included from other drivers.
Signed-off-by: Shengjiu Wang
Acked-by: Mark Brown
---
{sound/soc/fsl => include/sound}/fsl_asrc_common.h | 0
sound/soc/fsl/fsl_asrc.h | 2 +-
sound/soc/fsl/fsl_asrc_dma.c
Add and document a media entity type for an audio resampler.
It is MEDIA_ENT_F_PROC_AUDIO_RESAMPLER.
Signed-off-by: Shengjiu Wang
---
Documentation/userspace-api/media/mediactl/media-types.rst | 6 ++
include/uapi/linux/media.h | 1 +
2 files changed, 7
Audio signal processing has the requirement for memory to
memory similar as Video.
This patch is to add this support in v4l2 framework, defined
new buffer type V4L2_BUF_TYPE_AUDIO_CAPTURE and
V4L2_BUF_TYPE_AUDIO_OUTPUT, defined new format v4l2_audio_format
for audio case usage.
The created audio
The Audio M2M class includes controls for audio memory-to-memory
use cases. The controls can be used for audio codecs, audio
preprocessing, audio postprocessing.
Signed-off-by: Shengjiu Wang
---
.../userspace-api/media/v4l/common.rst| 1 +
.../media/v4l/ext-ctrls-audio-m2m.rst
Add V4L2_CID_M2M_AUDIO_SOURCE_RATE and V4L2_CID_M2M_AUDIO_DEST_RATE
new IDs for rate control.
Add V4L2_CID_M2M_AUDIO_SOURCE_RATE_OFFSET and
V4L2_CID_M2M_AUDIO_DEST_RATE_OFFSET for clock drift.
Signed-off-by: Shengjiu Wang
---
.../media/v4l/ext-ctrls-audio-m2m.rst | 38
Register m2m platform device, that user can
use M2M feature.
Defined platform data structure and platform
driver name.
Signed-off-by: Shengjiu Wang
Acked-by: Mark Brown
---
include/sound/fsl_asrc_common.h | 23 +++
sound/soc/fsl/fsl_asrc.c| 18 ++
2
Register m2m platform device,that user can
use M2M feature.
Signed-off-by: Shengjiu Wang
Acked-by: Mark Brown
---
sound/soc/fsl/fsl_easrc.c | 19 +++
1 file changed, 19 insertions(+)
diff --git a/sound/soc/fsl/fsl_easrc.c b/sound/soc/fsl/fsl_easrc.c
index
From: Hans Verkuil
This adds support for the fraction_bits field, used with integer controls.
This allows fixed point formats to be described.
The fraction_bits field is only exposed through VIDIOC_QUERY_EXT_CTRL.
For a given signed two's complement Qf fixed point value 'f' equals
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