Executing a clflush operation on MMIO memory freezes embedded
platforms such as the Celeron N3450 used on the ZimaBlade. Looking into
the current linux code confirms that clflush is only used for ppgtt
entries and not on MMIO memory.
Fixes#5176
Unlike the previous return value of
`Genode::Packet_allocator::need_size_for_free()` indicated, it does need
the size of the object it has to free to work properly.
Before, the current back-most window was not restacked if it was part of
the already, which lead to partially inconsistent view of the window
stack between decorator and nitpicker.
Due to a bug in the original implementation, the size of the MMIO
range covering the 'Request_sense_response' data was set too large
during the MMIO boundary change. This rendered devices that were not
yet ready and required an 'Request_sense' command unusable.
The commit also adapts all other commands where the MMIO size does
not match the expected one.
Fixes#5133.
The dynamic buffer allocation increases the RAM demand slightly beyond
1M on seL4. Use 2M, as is already the default in pkg/terminal_crosslink.
Issue #5135
Replace the USB session API by one that provides a devices ROM only,
which contains information about all USB devices available for this client,
as well as methods to acquire and release a single device.
The acquisition of an USB device returns the capability to a device session
that includes a packet stream buffer to communicate control transfers
in between the client and the USB host controller driver. Moreover,
additional methods to acquire and release an USB interface can be used.
The acquisition of an USB interface returns the capability to an interface
session that includes a packet stream buffer to communicate either
bulk, interrupt, or isochronous transfers in between the client and the
USB host controller driver.
This commit implements the API changes in behalf of the Genode C API's
USB server and client side. Addtionally, it provides Usb::Device,
Usb::Interface, and Usb::Endpoint utilities that can be used by native
C++ clients to use the new API and hide the sophisticated packet stream API.
The adaptations necessary target the following areas:
* lx_emul layer for USB host and client side
* Linux USB host controller driver port for PC
* Linux USB client ports: usb_hid_drv and usb_net_drv, additionally
reduce the Linux tasks used inside these drivers
* Native usb_block_drv
* black_hole component
* Port of libusb, including smartcard and usb_webcam driver depending on it
* Port of Qemu XHCI model library, including vbox5 & vbox6 depending on it
* Adapt all run-scripts and drivers_interactive recipes to work
with the new policy rules of the USB host controller driver
Fixgenodelabs/genode#5021
This patch modifies the mixer's time window allocation by modelling the
drift of the period length over time. This yields a much better
stability of the detected sample rates in the presence of jitter.
Issue #5132
- monitor system ROM changes
- stop processing of new Jobs before suspend
- destruct platform device before suspend, but keep platform DMA buffers
- re-construct platform device and reinit resources (mmio, irq) on resume
- re-start block job scheduling on resume
Fixes#5101
- monitor system ROM changes
- stop processing of new Jobs before suspend
- destruct platform device before suspend, but keep platform DMA buffers
- re-construct platform device and reinit resources (mmio, irq) on resume
- re-start block job scheduling on resume
Issue #5101
This commit is a preparation commit for suspend/resume. The commit
refactors the code in order to consolidate all Platform resources into one
instance. All users within the driver should access the resources with
with_* functions, which checks whether the device resource is usable. The
callers are not allowed to store any references to the provided resources.
Issue #5101
- monitor system ROM changes
- stop processing of new Jobs before suspend
- destruct platform device before suspend, but keep platform DMA buffers
- re-construct platform device and reinit resources (mmio, irq) on resume
- re-start GPU job scheduling on resume
Fixes#5081
- New session interfaces:
- os/include/play_session (for audio playing / mic-input driver)
- os/include/record_session (for audio recording / audio-output driver)
- Mixer at os/src/record_play_mixer providing both play and record services
- Simple waveform player at os/src/app/waveform_player
- Simple audio-signal capturing component at os/src/app/record_rom
- Simple oscilloscpe at gems/src/app/rom_osci (using record_rom)
- Simple test-audio_play for playing raw stereo f32 data
The _gems/run/waveform_player.run_ script illustrates the use of the new
components and interfaces.
Issue #5097
Check if controllers port count matches number of ports found in the
port implemented register. In case counts don't match print a diagnostic
message for debugging purposes.
issue #4081
The <transform> filter configurably transforms touch and absolute-motion event
coordinates by a sequence of translation (move), scaling, rotation, and flipping
primitives in sub-nodes.
Issue #5105
Per default, only key presses and releases are logged. The optional
'motion' attribute (boolean) enables logging of motion and touch events.
Issue #5105
The classes Genode::Mmio, Genode::Register_set, Genode::Attached_mmio, and
Platform::Device::Mmio now receive a template parameter 'size_t SIZE'. In each
type that derives from one of these classes, it is now statically checked that
the range of each Genode::Register::Register- and
Genode::Register_set::Register_array-deriving sub-type is within [0..SIZE).
That said, SIZE is the minimum size of the memory region provided to the above
mentioned Mmio classes in order to avoid page faults or memory corruption when
accessing the registers and register arrays declared inside.
Note, that the range end of a register array is not the end of the last item
but the end of integer access that is used for accessing the last bit in the
last item.
The constructors of Genode::Mmio, Genode::Attached_mmio, and
Platform::Device::Mmio now receive an argument 'Byte_range_ptr range' that is
expected to be the range of the backing memory region. In each type that derives
from on of these classes, it is now dynamically checked that 'range.num_bytes
>= SIZE', thereby implementing the above mention protection against page faults
and memory corruption.
The rest of the commit adapts the code throughout the Genode Labs repositories
regarding the changes. Note that for that code inside Core, the commits mostly
uses a simplified approach by constructing MMIO objects with range
[base..base+SIZE) and not with a mapping- or specification-related range size.
This should be fixed in the future.
Furthermore, there are types that derive from an MMIO class but don't declare
any registers or register arrays (especially with Platform::Device::Mmio). In
this case SIZE is set to 0. This way, the parameters must be actively corrected
by someone who later wants to add registers or register arrays, plus the places
can be easily found by grep'ing for Mmio<0>.
Fix#4081
I2C EEPROMs of the type at24xxx are really slow (ca. 10 kHZ).
This adds the `bus_speed_khz` attribute to the config of the driver and
adapts the i.MX8 driver to support the feature.
Issue gapfruit#1996
Fixes genodelabs#5090
The former implementation relied on input drvdata always pointing to
struct hid_device, which is not true for Wacom touch devices (at least).
Now, we implement the input handler for devices providing LEDs
(evbit[EV_LED] set) only and use input_inject_event() to set the LED
states.
The commit is a preparation commit for suspend/resume. It prepares the GPU
structures relying on gmadr.cap() (MMIO) to be re-constructible by applying
the with* pattern to context, ring_buffer and ggtt mmio map. It removes
the managed dataspace handling of gmadr subsets to make the with_* pattern
possible.
Issue #5081
This commit is a preparation commit for suspend/resume. The commit
refactors the code in order to consolidate all Platform resources into one
instance. All users within the GPU driver should access the resources with
with_* functions, which checks whether the device resource is usable. The
callers are not allowed to store any references to the provided resources.
With this change, it will be possible in follow up commits, to release
the platform device and to re-acquire it and its resources, e.g. mmio, irq,
gmadr.
Issue #5081
The axis IDs correspond to 2x analog sticks with 2 axes and 2x triggers.
While being at it, the commit changes the Axis_id type to Axis::Id.
Fixes#3669
The frame-pointer-based backtrace does not work without enabling
-fno-omit-frame-pointer explicitly and in most cases leads to page
faults because non-pointer stack values are dereferenced during the
walk. The best we can do is to limit the backtrace walk to the stack of
the current thread to prevent page faults unrelated to the system state
without the use of the backtrace utility.
This commit introduces a printable Backtrace class usable in
Genode::log(), Genode::trace(), etc. The class is based on the new
function for_each_return_address(auto const &fn) that walks the stack in
its limits and calls fn() for each discovered return address on the
stack in the new os/include/os/backtrace.h. Archtecture-specific
stack-pointer retrieval and walk loops are implemented in dedicated
os/include/spec/<arch>/os/for_each_return_address.h files. Also, the
well-known Genode::backtrace() function (which logs the return-address
values) is provided for backwards compatibility.
Fixes#5078
