Before firmware and its modules can be used, they have to be loaded.
Code loading process is complex and is a combination of DMA and IPC
operations. Here, IPC part is being added and accounts for CLDMA and HDA
mechanisms both.
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20220311153544.136854-6-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Implement the IPC between Intel audio firmware and kernel driver. The
IPC allows transmission of requests, handling of responses as well as
unsolicited (i.e. firmware-generated) notifications.
A subscription mechanism is added to enable different parts of the
driver to register for specific notifications.
The part of the DSP boot process that involves sending ROM message
requires an extra step - must be followed by unstall operation of
MAIN_CORE. All other types of messages do not require such specific
handling, so separate set of functions is provided for sending these.
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20220311153544.136854-5-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Declare base structures and core DSP operations for the avs solution.
The base structures describe PCI HDAudio bus device and platform-type
differentiations. First set of operations added controls the lifecycle
of any Audio DSP core: (un)powering, (un)resetting and (un)stalling.
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20220311153544.136854-4-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
To allow for more flexibility i.e. populating component DAIs dynamically
during its initialization, without being limited to topology loading
procedure, expose snd_soc_register(), snd_soc_dapm_new_dai_widgets() and
snd_soc_dapm_free_widget() functions.
Allows users to first check available resources e.g. number of PCMs
supported by HDAudio codec before allocating the number of DAPM
widgets needed. This prevents superfluous objects from being created or
allows driver to adjust to situation when resources are limited.
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20220311153544.136854-3-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
HDAudio drivers make heavy use of I/O operations. Declare a range of
update, read and write helpers similar to those available for HDAudio
legacy driver. These macros are used by AVS driver to improve code
readability.
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20220311153544.136854-2-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
We shouldn't really be keeping track of how many SFC_DONE registers
our platforms can have, but rather how many SFC hardware units there can
be (each SFC unit will have one corresponding SFC_DONE register). So
drop the stray GEN12_SFC_DONE_MAX definition we had in the register
definition file and replace it with an I915_MAX_SFC that follows the
pattern we use for other hardware units. Note that our hardware has a
2:1:1 ratio of VD:VE:SFC, and as far as we know that pattern should
carry forward to future platforms, so we'll define it as #VCS/2.
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220311062835.163744-1-matthew.d.roper@intel.com
On a HP 288 Pro G8, the front mic could not be detected.In order to
get it working, the pin configuration needs to be set correctly, and
the ALC671_FIXUP_HP_HEADSET_MIC2 fixup needs to be applied.
Signed-off-by: huangwenhui <huangwenhuia@uniontech.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220311093836.20754-1-huangwenhuia@uniontech.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
These are the interconnect changes for the 5.18-rc1 merge window
consisting of minor framework and driver updates.
Core changes:
- Added stubs for the bulk API to expand compile testing coverage.
Driver changes:
- imx: Implemented get_bw() function to get initial avg/peak bandwidth.
- msm8939: Fix ioremap collision for snoc-mm.
Signed-off-by: Georgi Djakov <djakov@kernel.org>
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Merge tag 'icc-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/djakov/icc into char-misc-next
Georgi writes:
interconnect changes for 5.18
These are the interconnect changes for the 5.18-rc1 merge window
consisting of minor framework and driver updates.
Core changes:
- Added stubs for the bulk API to expand compile testing coverage.
Driver changes:
- imx: Implemented get_bw() function to get initial avg/peak bandwidth.
- msm8939: Fix ioremap collision for snoc-mm.
Signed-off-by: Georgi Djakov <djakov@kernel.org>
* tag 'icc-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/djakov/icc:
interconnect: Add stubs for the bulk API
interconnect: qcom: msm8939: Remove snoc_mm specific regmap
dt-bindings: interconnect: Convert snoc-mm to a sub-node of snoc
interconnect: imx: Add imx_icc_get_bw function to set initial avg and peak
The Allwinner F1C100 series contains two MMC controller blocks. From
comparing the data sheets, they seem to be compatible with the one used
in the Allwinner A20: the register layout is the same, and they use the
same separate sample and output clocks design.
The only difference is the missing reset line in the A20 version, but
both the binding and the Linux driver make this optional, so it's still
a fit.
Add the new SoC specific name and require it to be paired with the A20
fallback name, as this is all the driver needs to care about.
Signed-off-by: Jesse Taube <Mr.Bossman075@gmail.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Samuel Holland <samuel@sholland.org>
Link: https://lore.kernel.org/r/20220307143421.1106209-8-andre.przywara@arm.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This includes following Thunderbolt/USB4 changes for the v5.18 merge
window:
* Improvements for Intel Alpine and Titan Ridge support
* Replace acpi_bus_get_device() with acpi_fetch_acpi_dev()
* Improvements around DROM handling on AMD hardware
* A couple of cleanups.
All these have been in linux-next with no reported issues.
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Merge tag 'thunderbolt-for-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into usb-next
Mika writes:
thunderbolt: Changes for v5.18 merge window
This includes following Thunderbolt/USB4 changes for the v5.18 merge
window:
* Improvements for Intel Alpine and Titan Ridge support
* Replace acpi_bus_get_device() with acpi_fetch_acpi_dev()
* Improvements around DROM handling on AMD hardware
* A couple of cleanups.
All these have been in linux-next with no reported issues.
* tag 'thunderbolt-for-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt:
thunderbolt: Rename EEPROM handling bits to match USB4 spec
thunderbolt: Clarify register definitions for `tb_cap_plug_events`
thunderbolt: Do not make DROM read success compulsory
thunderbolt: Do not resume routers if UID is not set
thunderbolt: Retry DROM reads for more failure scenarios
thunderbolt: Replace acpi_bus_get_device()
thunderbolt: Add internal xHCI connect flows for Thunderbolt 3 devices
thunderbolt: Add missing device ID to tb_switch_is_alpine_ridge()
thunderbolt: Disable LTTPR on Intel Titan Ridge
thunderbolt: Remove useless DMA-32 fallback configuration
In preparation for supporting validation of DTB files, the full
processed schema will always be needed in order to extract type
information from it. Therefore, the processed schema containing only
what DT_SCHEMA_FILES specifies won't work. Instead, dt-validate has
gained an option, -l or --limit, to specify which schema(s) to use for
validation.
As the command line option is new, we the minimum dtschema version must be
updated.
Cc: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220310160513.1708182-2-robh@kernel.org
Update lock usage of lock_manager_operations' functions to reflect
the changes in commit 6109c85037 ("locks: add a dedicated spinlock
to protect i_flctx lists").
Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
These have been incorrect since the function was introduced.
A proper kerneldoc comment is added since this function, though
static, is part of an external interface.
Reported-by: Dai Ngo <dai.ngo@oracle.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
The common practice is to name function instances the same as the
method names, but with a uniquifying prefix. Commit aef9583b23
("NFSD: Get reference of lockowner when coping file_lock") missed
this -- the new function names should both have been of the form
"nfsd4_lm_*".
Before more lock manager operations are added in NFSD, rename these
two functions for consistency.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Eventually support for NFSv2 in the Linux NFS server is to be
deprecated and then removed.
However, NFSv2 is the "always supported" version that is available
as soon as CONFIG_NFSD is set. Before NFSv2 support can be removed,
we need to choose a different "always supported" version.
This patch removes CONFIG_NFSD_V3 so that NFSv3 is always supported,
as NFSv2 is today. When NFSv2 support is removed, NFSv3 will become
the only "always supported" NFS version.
The defconfigs still need to be updated to remove CONFIG_NFSD_V3=y.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
The top level QEMU virt machine compatible, linux,dummy-virt, has been
in use for a long time, but never documented. Add a schema for it.
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20220310021224.599398-1-robh@kernel.org
Convert the QEMU fw-cfg binding to DT schema format. As this binding is
also used on Risc-V now, drop any architecture references and move to a
common location. The fw-cfg interface has also gained some DMA support
which is coherent, so add the missing 'dma-coherent'.
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Link: https://lore.kernel.org/r/20220310013552.549590-1-robh@kernel.org
Displaying "PREEMPT" on kernel headers when CONFIG_PREEMPT_DYNAMIC=y
can be misleading for anybody involved in remote debugging because it
is then not guaranteed that there is an actual preemption behaviour. It
depends on default Kconfig or boot defined choices.
Therefore, tell about PREEMPT_DYNAMIC on static kernel headers and leave
the search for the actual preemption behaviour to browsing dmesg.
Reviewed-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20220217111240.GA742892@lothringen
PL022 has two input clocks named sspclk and apb_pclk. Current schema
refers to two notations of sspclk which are indeed same and thus one can
be dropped. Update clock-names property to reflect the same.
Signed-off-by: Kuldeep Singh <singh.kuldeep87k@gmail.com>
Link: https://lore.kernel.org/r/20220309171847.5345-1-singh.kuldeep87k@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Fix the missing clk_disable_unprepare() before return
from msm8916_wcd_digital_probe in the error handling case.
Fixes: 150db8c5af ("ASoC: codecs: Add msm8916-wcd digital codec")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Link: https://lore.kernel.org/r/20220307084523.28687-1-linmq006@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Playback or capture errors are seen when clock is reset during an active
stage of DAI. Presently this scenario happens when DAI has both playback
and capture sessions running and one of these finishes first which will
be followed by clock rate reset. The remaining active session will be
affected in such case.
Address this problem by allowing clock rate reset to happen only when
the DAI is no more active.
Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Reviewed-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/1646910999-2501-1-git-send-email-spujar@nvidia.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Add required properties "resets" and "reset_names", which are used to
specify audiosys hw reset for mt8195 afe driver.
Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Link: https://lore.kernel.org/r/20220308072435.22460-3-trevor.wu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Audio hardware is possibly used in the firmware stage, so resetting audio
hardware before regcache records default register values is required.
Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220308072435.22460-2-trevor.wu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
All users have been converted to use the IPC agnostic
set_stream_data_offsett()
Remove all code related to the old API.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220310042720.976809-11-ranjani.sridharan@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Switch from the IPC dependent ipc_pcm_params() ops to the IPC neutral
set_stream_data_offset().
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220310042720.976809-10-ranjani.sridharan@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Switch from the IPC dependent ipc_pcm_params() ops to the IPC neutral
set_stream_data_offset().
Remove the no longer used hda_ipc_pcm_params() function as well.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220310042720.976809-9-ranjani.sridharan@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Add implementation for the generic set_stream_data_offset() callback to be
used by HDA platforms.
Convert the hda_ipc_pcm_params() to a wrapper for the new function.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220310042720.976809-8-ranjani.sridharan@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Add implementation for the generic set_stream_data_offset() callback in
core to be used by platforms.
Convert the sof_ipc_pcm_params() to a wrapper for the new function.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220310042720.976809-7-ranjani.sridharan@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
AMD is only implementing an empty function to pass the required test and
it is going to be deprecated in favor of the IPC agnostic
set_stream_data_offset() callback.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220310042720.976809-6-ranjani.sridharan@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Each running audio stream's data have distinct start offset within the
stream mailbox area from/to where the host can read/write.
Instead of using the struct sof_ipc_pcm_params_reply to configure this
offset, add an optional callback which is IPC agnostic.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220310042720.976809-5-ranjani.sridharan@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Call directly for snd_sof_ipc_pcm_params() from sof_pcm_hw_params() and
remove the wrapper for it.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220310042720.976809-4-ranjani.sridharan@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Do not send IPC structure directly via pcm_hw_params to make it IPC
agnostic.
A new struct is created to retrieve the needed platform parameters and if
there is a need it can be extended with new options.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220310042720.976809-3-ranjani.sridharan@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The implementation for snd_sof_ipc_stream_pcm_params() does not exist,
remove it from the header file.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220310042720.976809-2-ranjani.sridharan@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
RT711 sdca sdw is added with SDW0 link for ADL-PS platform.
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Muralidhar Reddy <muralidhar.reddy@intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220310171651.249385-6-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Taniks has four max98357a on SSP2 with Demux and EQ in topology to
implement a 2-way speaker system.
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Brent Lu <brent.lu@intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220310171651.249385-5-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Buffers allocated with snd_dma_alloc_pages() will have DMA direction
DMA_BIDIRECTIONAL. The trace data memory is only used for one DMA
direction: DMA_FROM_DEVICE, DMA only writes there, never reads.
We also need to do a sync before accessing (reading with CPU) from the
trace data buffer to copy it to user space.
Note: snd_dma_buffer_sync() is also used for normal playback and capture
streams to make sure that the data is available for the DMA or CPU.
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220310171651.249385-4-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
"cstream" is dereferenced but null checked later. Swap their
positions to avoid potential null dereference.
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: Weiguo Li <liwg06@foxmail.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220310171651.249385-3-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Add back logic to mark all playback streams as L1 compatible.
Fixes: 246dd4287d ("ASoC: SOF: Intel: make DMI L1 selection more robust")
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220310171651.249385-2-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The SBI v0.3 specification extends SBI HSM extension by adding SBI HSM
suspend call and related HART states. This patch extends the KVM RISC-V
HSM implementation to provide KVM guest a minimal SBI HSM suspend call
which is equivalent to a WFI instruction.
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
The wait for interrupt (WFI) instruction emulation can share the VCPU
halt logic with SBI HSM suspend emulation so this patch adds a common
kvm_riscv_vcpu_wfi() function for this purpose.
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
We add defines related to SBI HSM suspend call and also update HSM states
naming as-per the latest SBI specification.
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
The SBI v0.3 specification defines SRST (System Reset) extension which
provides a standard poweroff and reboot interface. This patch implements
SRST extension for the KVM Guest.
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
We rename kvm_sbi_system_shutdown() to kvm_riscv_vcpu_sbi_system_reset()
and move it to vcpu_sbi.c so that it can be shared by SBI v0.1 shutdown
and SBI v0.3 SRST extension.
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
We upgrade SBI spec version implemented by KVM RISC-V to v0.3 so
that Guest kernel can probe and use SBI extensions added by the
SBI v0.3 specification.
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
Kernel uses __kvm_riscv_switch_to() and __kvm_switch_return() to switch
the context of host kernel and guest kernel. Several CSRs belonging to the
context will be read and written during the context switch. To ensure
atomic read-modify-write control of CSR and ordering of CSR accesses, some
hardware blocks flush the pipeline when writing a CSR. In this
circumstance, grouping CSR executions together as much as possible can
reduce the performance impact of the pipeline. Therefore, this commit
reorders the CSR instructions to enhance the context switch performance..
Signed-off-by: Vincent Chen <vincent.chen@sifive.com>
Suggested-by: Hsinyi Lee <hsinyi.lee@sifive.com>
Suggested-by: Fu-Ching Yang <fu-ching.yang@sifive.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
Eliminate the following coccicheck warning:
./arch/riscv/kvm/vcpu_sbi_v01.c:117:2-3: Unneeded semicolon
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
