Commit Graph

289 Commits

Author SHA1 Message Date
Marc-André Lureau
2fd319cff0 ui/console: get the DisplayState from new_console()
There is no obvious reason to defer text console initialization. We can
simply take the global display state in new_console().

This simplify somewhat the code to allow moving the VC to a separate unit.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230830093843.3531473-10-marcandre.lureau@redhat.com>
2023-09-04 12:37:45 +04:00
Marc-André Lureau
cbcf0fa8fd ui/console: drop have_gfx
All usages have been removed.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230830093843.3531473-9-marcandre.lureau@redhat.com>
2023-09-01 17:21:04 +00:00
Marc-André Lureau
bc9b8bc93c ui/console: call dpy_gfx_update() regardless of have_gfx
The function will handle the case when no listeners are gfx, without
extra meaningful cost.

This allows to get rid of DisplayState dependency in VC implementation.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230830093843.3531473-8-marcandre.lureau@redhat.com>
2023-09-01 17:21:04 +00:00
Marc-André Lureau
074b24094f ui/console: console_select() regardless of have_gfx
Even if we don't have a gfx listener, we should call
displaychangelistener_display_console() which handle that case correctly.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230830093843.3531473-7-marcandre.lureau@redhat.com>
2023-09-01 17:21:04 +00:00
Marc-André Lureau
177422789b ui/vc: drop have_text
If there are no "text" listener, the callback will simply be ignored.
The rest of text handling can be done cheaply.

This allows to remove some dependency on DisplayState from VC
implementation.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230830093843.3531473-6-marcandre.lureau@redhat.com>
2023-09-01 17:21:04 +00:00
Marc-André Lureau
f1f7a1e2cf ui/vc: replace vc_chr_write() with generic qemu_chr_write()
We shouldn't call the callback directly, but use the chardev API, unless
there is a clear reason.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230830093843.3531473-5-marcandre.lureau@redhat.com>
2023-09-01 17:21:04 +00:00
Marc-André Lureau
4f2c765ba6 ui/qmp: move screendump to ui-qmp-cmds.c
console.c unit is over-crowded. This code is specific to the handling of
the QMP screendump command, so move it in ui-qmp-cmds.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230830093843.3531473-4-marcandre.lureau@redhat.com>
2023-09-01 17:21:04 +00:00
Dongwon Kim
0d0be87659 virtio-gpu: replace the surface with null surface when resetting
The primary guest scanout shows the booting screen right after reboot
but additional guest displays (i.e. max_ouptuts > 1) will keep displaying
the old frames until the guest virtio gpu driver gets initialized, which
could cause some confusion. A better way is to to replace the surface with
a place holder that tells the display is not active during the reset of
virtio-gpu device.

And to immediately update the surface with the place holder image after
the switch, displaychangelistener_gfx_switch needs to be called with
'update == TRUE' in dpy_gfx_replace_surface when the new surface is NULL.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Cc: Vivek Kasireddy <vivek.kasireddy@intel.com>
Signed-off-by: Dongwon Kim <dongwon.kim@intel.com>
Acked-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20230627224451.11739-1-dongwon.kim@intel.com>
2023-07-17 15:20:56 +04:00
Marc-André Lureau
bf41ab6190 ui: add optional d3d texture pointer to scanout texture
The following patch will get the underlying D3D11 Texture2D from the
virgl renderer scanout. Pass it along to the texture scanout callbacks
as a priliminary step, to simplify review.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230606115658.677673-20-marcandre.lureau@redhat.com>
2023-06-27 17:08:56 +02:00
Marc-André Lureau
09b4c198b8 console/win32: allocate shareable display surface
Introduce qemu_win32_map_alloc() and qemu_win32_map_free() to allocate
shared memory mapping. The handle can be used to share the mapping with
another process.

Teach qemu_create_displaysurface() to allocate shared memory. Following
patches will introduce other places for shared memory allocation.

Other patches for -display dbus will share the memory when possible with
the client, to avoid expensive memory copy between the processes.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230606115658.677673-10-marcandre.lureau@redhat.com>
2023-06-27 17:08:56 +02:00
Bilal Elmoussaoui
b659678598 ui/touch: Move event handling to a common helper
To share code between the GTK and DBus UI bakcends
see the next commit for details

Signed-off-by: Bilal Elmoussaoui <belmouss@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230619095337.9899-2-belmouss@redhat.com>
2023-06-27 17:08:56 +02:00
Marc-André Lureau
333e7599a0 ui: return NULL when getting cursor without a console
VNC may try to get the current cursor even when there are no consoles
and crashes. Simple reproducer is qemu with -nodefaults.

Fixes: (again)
https://gitlab.com/qemu-project/qemu/-/issues/1548

Fixes: commit 385ac97f8 ("ui: keep current cursor with QemuConsole")
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230428154807.2143652-1-marcandre.lureau@redhat.com>
2023-06-27 12:31:15 +02:00
Peter Maydell
cd22a0f520 ui: Fix pixel colour channel order for PNG screenshots
When we take a PNG screenshot the ordering of the colour channels in
the data is not correct, resulting in the image having weird
colouring compared to the actual display.  (Specifically, on a
little-endian host the blue and red channels are swapped; on
big-endian everything is wrong.)

This happens because the pixman idea of the pixel data and the libpng
idea differ.  PIXMAN_a8r8g8b8 defines that pixels are 32-bit values,
with A in bits 24-31, R in bits 16-23, G in bits 8-15 and B in bits
0-7.  This means that on little-endian systems the bytes in memory
are
   B G R A
and on big-endian systems they are
   A R G B

libpng, on the other hand, thinks of pixels as being a series of
values for each channel, so its format PNG_COLOR_TYPE_RGB_ALPHA
always wants bytes in the order
   R G B A

This isn't the same as the pixman order for either big or little
endian hosts.

The alpha channel is also unnecessary bulk in the output PNG file,
because there is no alpha information in a screenshot.

To handle the endianness issue, we already define in ui/qemu-pixman.h
various PIXMAN_BE_* and PIXMAN_LE_* values that give consistent
byte-order pixel channel formats.  So we can use PIXMAN_BE_r8g8b8 and
PNG_COLOR_TYPE_RGB, which both have an in-memory byte order of
    R G B
and 3 bytes per pixel.

(PPM format screenshots get this right; they already use the
PIXMAN_BE_r8g8b8 format.)

Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1622
Fixes: 9a0a119a38 ("Added parameter to take screenshot with screendump as PNG")
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20230502135548.2451309-1-peter.maydell@linaro.org
2023-05-12 15:43:38 +01:00
Marc-André Lureau
3c293a4662 ui: return the default console cursor when con == NULL
VNC code relies on con==NULL to mean the default console.

Fixes:
https://gitlab.com/qemu-project/qemu/-/issues/1548

Fixes: commit 385ac97f8 ("ui: keep current cursor with QemuConsole")
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reported-by: Helge Konetzka <hk@zapateado.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230319111017.1319880-1-marcandre.lureau@redhat.com>
2023-03-21 11:17:44 +04:00
Marc-André Lureau
6effaa16ac ui: set cursor position upon listener registration
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2023-03-13 23:48:35 +04:00
Marc-André Lureau
de00b60db4 ui: set cursor upon listener registration
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2023-03-13 23:45:56 +04:00
Marc-André Lureau
385ac97f8f ui: keep current cursor with QemuConsole
Keeping the current cursor around is useful, not only for VNC, but for
other displays. Let's move it down, see the following patches for other
usages.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2023-03-13 22:57:39 +04:00
Thomas Huth
5feed38c21 Do not include "qemu/error-report.h" in headers that do not need it
Include it in the .c files instead that use the error reporting
functions.

Message-Id: <20230210111931.1115489-1-thuth@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-02-14 09:11:27 +01:00
Markus Armbruster
68ba85cecc coroutine: Split qemu/coroutine-core.h off qemu/coroutine.h
qemu/coroutine.h and qemu/lockable.h include each other.

They need each other only in macro expansions, so we could simply drop
both inclusions to break the loop, and add suitable includes to files
that expand the macros.

Instead, move a part of qemu/coroutine.h to new qemu/coroutine-core.h
so that qemu/coroutine-core.h doesn't need qemu/lockable.h, and
qemu/lockable.h only needs qemu/coroutine-core.h.  Result:
qemu/coroutine.h includes qemu/lockable.h includes
qemu/coroutine-core.h.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221221131435.3851212-5-armbru@redhat.com>
[Semantic rebase conflict with 7c10cb38cc "accel/tcg: Add debuginfo
support" resolved]
2023-01-20 07:21:46 +01:00
Markus Armbruster
3f41a3adb4 qapi ui: Elide redundant has_FOO in generated C
The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/ui.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20221104160712.3005652-28-armbru@redhat.com>
2022-12-14 20:05:07 +01:00
Claudio Fontana
c551fb0b53 module: add Error arguments to module_load and module_load_qom
improve error handling during module load, by changing:

bool module_load(const char *prefix, const char *lib_name);
void module_load_qom(const char *type);

to:

int module_load(const char *prefix, const char *name, Error **errp);
int module_load_qom(const char *type, Error **errp);

where the return value is:

 -1 on module load error, and errp is set with the error
  0 on module or one of its dependencies are not installed
  1 on module load success
  2 on module load success (module already loaded or built-in)

module_load_qom_one has been introduced in:

commit 28457744c3 ("module: qom module support"), which built on top of
module_load_one, but discarded the bool return value. Restore it.

Adapt all callers to emit errors, or ignore them, or fail hard,
as appropriate in each context.

Replace the previous emission of errors via fprintf in _some_ error
conditions with Error and error_report, so as to emit to the appropriate
target.

A memory leak is also fixed as part of the module_load changes.

audio: when attempting to load an audio module, report module load errors.
Note that still for some callers, a single issue may generate multiple
error reports, and this could be improved further.
Regarding the audio code itself, audio_add() seems to ignore errors,
and this should probably be improved.

block: when attempting to load a block module, report module load errors.
For the code paths that already use the Error API, take advantage of those
to report module load errors into the Error parameter.
For the other code paths, we currently emit the error, but this could be
improved further by adding Error parameters to all possible code paths.

console: when attempting to load a display module, report module load errors.

qdev: when creating a new qdev Device object (DeviceState), report load errors.
      If a module cannot be loaded to create that device, now abort execution
      (if no CONFIG_MODULE) or exit (if CONFIG_MODULE).

qom/object.c: when initializing a QOM object, or looking up class_by_name,
              report module load errors.

qtest: when processing the "module_load" qtest command, report errors
       in the load of the module.

Signed-off-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220929093035.4231-4-cfontana@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-11-06 09:48:50 +01:00
Claudio Fontana
dbc0e80553 module: rename module_load_one to module_load
Signed-off-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220929093035.4231-3-cfontana@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-11-06 09:48:50 +01:00
Volker Rümelin
cf6280b99b ui: remove useless typecasts
Commit 8f9abdf586 ("chardev: src buffer const for write functions")
changed the type of the second parameter of qemu_chr_be_write()
from uint8_t * to const uint8_t *. Remove the now useless type
casts from qemu_chr_be_write() function calls in ui/console.c and
ui/gtk.c.

Cc: qemu-trivial@nongnu.org
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Claudio Fontana <cfontana@suse.de>
Message-Id: <20221022141204.29358-1-vr_qemu@t-online.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-10-24 13:42:52 +02:00
Volker Rümelin
17b55372b5 ui/console: fix three double frees in png_save()
The png_destroy_write_struct() function frees all memory used by
libpng. Don't use the glib auto cleanup mechanism to free the
memory allocated by libpng again. For the pixman image, use only the
auto cleanup mechanism and remove the qemu_pixman_image_unref()
function call to prevent another double free.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1210
Fixes: 9a0a119a38 ("Added parameter to take screenshot with screendump as PNG")
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-Id: <20220919061956.30929-1-vr_qemu@t-online.de>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-09-23 14:38:27 +02:00
Cal Peake
df6322a897 ui/console: Get tab completion working again in the SDL monitor vc
Define a QEMU special key constant for the tab key and add an entry for
it in the qcode_to_keysym table. This allows tab completion to work again
in the SDL monitor virtual console, which has been broken ever since the
migration from SDL1 to SDL2.

Signed-off-by: Cal Peake <cp@absolutedigital.net>
Message-Id: <7054816e-99c-7e2-6737-7cf98cc56e2@absolutedigital.net>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-09-23 13:42:09 +02:00
Marc-André Lureau
88738ea40b ui/console: fix qemu_console_resize() regression
The display may be corrupted when changing screen colour depth in
qemu-system-ppc/MacOS since 7.0.

Do not short-cut qemu_console_resize() if the surface is backed by vga
vram. When the scanout isn't set, or it is already allocated, or opengl,
and the size is fitting, we still avoid the reallocation & replace path.

Fixes: commit cb8962c1 ("ui: do not create a surface when resizing a GL scanout")

Reported-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20220725115815.2461322-1-marcandre.lureau@redhat.com>
2022-08-18 10:46:55 +04:00
Wen, Jianxian
839a482695 ui/console: allow display device to be labeled with given id
The update makes it easier to find and specify devices.
They can only be found by device type name without the id field,
for example, devices of the same type have the same label.
The update also adds a head field,
which is useful for devices that support multiple heads,
such as virtio-gpu.

Signed-off-by: Jianxian Wen <jianxian.wen@verisilicon.com>
Signed-off-by: Lu Gao <lu.gao@verisilicon.com>
Message-Id: <4C23C17B8E87E74E906A25A3254A03F4018FC045B0@SHASXM06.verisilicon.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-07-01 12:33:51 +02:00
Akihiko Odaki
aeffd071ed ui: Deliver refresh rate via QemuUIInfo
This change adds a new member, refresh_rate to QemuUIInfo in
include/ui/console.h. It represents the refresh rate of the
physical display backend, and it is more appropriate than
GUI update interval as the refresh rate which the emulated device
reports:
- sdl may set GUI update interval shorter than the refresh rate
  of the physical display to respond to user-generated events.
- sdl and vnc aggressively changes GUI update interval, but
  a guests is typically not designed to respond to frequent
  refresh rate changes, or frequent "display mode" changes in
  general. The frequency of refresh rate changes of the physical
  display backend matches better to the guest's expectation.

QemuUIInfo also has other members representing "display mode",
which makes it suitable for refresh rate representation. It has
a throttling of update notifications, and prevents frequent changes
of the display mode.

Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Message-Id: <20220226115516.59830-3-akihiko.odaki@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-06-14 10:34:37 +02:00
Paolo Bonzini
d6ee15adec coroutine-lock: introduce qemu_co_queue_enter_all
Because qemu_co_queue_restart_all does not release the lock, it should
be used only in coroutine context.  Introduce a new function that,
like qemu_co_enter_next, does release the lock, and use it whenever
qemu_co_queue_restart_all was used outside coroutine context.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20220427130830.150180-3-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-05-12 12:29:44 +02:00
Kshitij Suri
9a0a119a38 Added parameter to take screenshot with screendump as PNG
Currently screendump only supports PPM format, which is un-compressed. Added
a "format" parameter to QMP and HMP screendump command to support PNG image
capture using libpng.

QMP example usage:
{ "execute": "screendump", "arguments": { "filename": "/tmp/image",
"format":"png" } }

HMP example usage:
screendump /tmp/image -f png

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/718

Signed-off-by: Kshitij Suri <kshitij.suri@nutanix.com>

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20220408071336.99839-3-kshitij.suri@nutanix.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-04-27 07:51:01 +02:00
Akihiko Odaki
1699d00e5b ui/console: Check console before emitting GL event
Without this change, The GL output of a console overwrites the
other consoles and makes them unusable.

Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220325161216.74582-1-akihiko.odaki@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2022-03-29 00:41:50 +02:00
Marc-André Lureau
e1c676a254 ui/console: call gfx_switch() even if the current scanout is GL
egl-headless depends on the backing surface to be set before texture are
set and updated. Display it (update=true) iff the current scanout kind
is SURFACE.

Reported-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2022-03-15 12:55:02 +04:00
Marc-André Lureau
589089feee ui/dbus: fix texture sharing
The DBus listener naively create, update and destroy textures without
taking into account other listeners. The texture were shared, but
texture update was unnecessarily duplicated.

Teach DisplayGLCtx to do optionally shared texture handling. This is
only implemented for DBus display at this point, however the same
infrastructure could potentially be used for other future combinations.

Reported-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2022-03-15 12:54:55 +04:00
Marc-André Lureau
c84ab0a500 ui/console: optionally update after gfx switch
When switching to the dummy surface, we should also call gfx_update.
But when using GL, we shouldn't call it.

By making it an argument to displaychangelistener_gfx_switch(), it will
be explicit, and cannot be forgotten that easily.

Fixes: commit ebced091 ("console: save current scanout details")
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2022-03-14 15:16:21 +04:00
Marc-André Lureau
26b032b9b7 ui/console: add a dpy_gfx_switch callback helper
Slight code improvement.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2022-03-14 15:16:19 +04:00
Marc-André Lureau
4b7b661d8f ui/console: move console compatibility check to dcl_display_console()
The current checks are done at registration time only. However, if a DCL
has no specific console specified, it may be switched dynamically with
console_select() later on.

Let's move the checks when displaychangelistener_display_console() is
called, which includes registration time and remains fatal if the
specified console is incompatible.

Note: we may want to display the compatibility error to the DCL, this is
left for a future improvement.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2022-03-14 15:16:11 +04:00
Marc-André Lureau
a62c4a178f ui/console: move dcl compatiblity check to a callback
As expected from the "compatible_dcl" comment, a simple comparison of
ops isn't enough. The following patch will fix a regression introduced
by this limited check by extending the compatibility callback for
egl-headless.

For now, this patch simply replaces the the "compatible_dcl" ops pointer
with a "dpy_gl_ctx_is_compatible_ctx" callback.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2022-03-14 15:16:01 +04:00
Marc-André Lureau
398d1c91ed ui/console: move check for compatible GL context
Move GL context compatibility check in dpy_compatible_with(), and use
recommended error reporting.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2022-03-14 15:15:34 +04:00
Marc-André Lureau
cb8962c146 ui: do not create a surface when resizing a GL scanout
qemu_console_resize() will create a blank surface and replace the
current scanout with it if called while the current scanout is
GL (texture or dmabuf).

This is not only very costly, but also can produce glitches on the
display/listener side.

Instead, compare the current console size with the fitting console
functions, which also works when the scanout is GL.

Note: there might be still an unnecessary surface creation on calling
qemu_console_resize() when the size is actually changing, but display
backends currently rely on DisplaySurface details during
dpy_gfx_switch() to handle various resize aspects. We would need more
refactoring to handle resize without DisplaySurface, this is left for a
future improvement.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20220214201337.1814787-4-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-03-04 11:28:37 +01:00
Marc-André Lureau
a9fbce5e94 ui/console: fix crash when using gl context with non-gl listeners
The commit 7cc712e98 ("ui: dispatch GL events to all listener")
mechanically replaced the dpy_gl calls with a dispatch loop, using the
same pre-conditions. However, it didn't take into account that all
listeners do not have to implement the GL callbacks.

Add the missing pre-conditions before calling the callbacks.

Fix crash when running a GL-enabled VM with "-device virtio-gpu-gl-pci
-display egl-headless -vnc :0".

Fixes: 7cc712e98 ("ui: dispatch GL events to all listener")
Reported-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220214201337.1814787-2-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-03-04 11:28:37 +01:00
Marc-André Lureau
ebced09185 console: save current scanout details
Add a new DisplayScanout structure to save the current scanout details.
This allows to attach later UI backends and set the scanout.

Introduce displaychangelistener_display_console() helper function to
handle the dpy_gfx_switch/gl_scanout() & dpy_gfx_update() calls.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2021-12-21 10:50:21 +04:00
Marc-André Lureau
5e79d516e8 ui: split the GL context in a different object
This will allow to have one GL context but a variable number of
listeners.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2021-12-21 10:50:21 +04:00
Marc-André Lureau
7cc712e986 ui: dispatch GL events to all listeners
For now, only one listener can receive GL events. Let's dispatch to all
listeners. (preliminary check ensure there is a single listener now
during regitration, and in next patches, compatible listeners only)

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2021-12-21 10:50:21 +04:00
Marc-André Lureau
f6413cbfd0 ui: simplify gl unblock & flush
GraphicHw.gl_flushed was introduced to notify the
device (vhost-user-gpu) that the GL resources (the display scanout) are
no longer needed.

It was decoupled from QEMU own gl-blocking mechanism, but that
difference isn't helping. Instead, we can reuse QEMU gl-blocking and
notify virtio_gpu_gl_flushed() when unblocking (to unlock
vhost-user-gpu).

An extra block/unblock is added arount dpy_gl_update() so existing
backends that don't block will have the flush event handled. It will
also help when there are no backends associated.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2021-12-21 10:50:21 +04:00
Marc-André Lureau
a9b1e471e1 ui: add a gl-unblock warning timer
Similar to the one that exists for Spice, so we can investigate if
something is locked.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2021-12-21 10:50:21 +04:00
Marc-André Lureau
a4ddc31417 ui: make gl_block use a counter
Track multiple callers blocking requests.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2021-12-21 10:50:21 +04:00
Marc-André Lureau
ac32b2fff1 ui: associate GL context outside of display listener registration
Consoles can have an associated GL context, without listeners (they may
be added or removed later on).

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2021-12-21 10:50:21 +04:00
Marc-André Lureau
4f41814991 ui: factor out qemu_console_set_display_gl_ctx()
The next patch will make use of this function to dissociate
DisplayChangeListener from GL context.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2021-12-21 10:50:21 +04:00
Marc-André Lureau
ca19ef5299 ui: do not delay further remote resize
A remote client, such as Spice, will already avoid flooding the stream
by delaying the resize requests.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2021-12-21 10:50:21 +04:00
Volker Rümelin
014b00cc0a ui/console: remove chardev frontend connected test
The test if the chardev frontend is connected in
kbd_put_keysym_console() is redundant, because the call
to qemu_chr_be_can_write() in kbd_send_chars() tests
the connected condition again.

Remove the redundant test whether the chardev frontend
is connected.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-Id: <20210916192239.18742-3-vr_qemu@t-online.de>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-11-02 17:24:18 +01:00
Volker Rümelin
ec22251904 ui/console: replace kbd_timer with chr_accept_input callback
There's a ChardevClass chr_accept_input() callback function that
can replace the write retry timer.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-Id: <20210916192239.18742-2-vr_qemu@t-online.de>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-11-02 17:24:18 +01:00
Volker Rümelin
0c9d0641ac ui/console: replace QEMUFIFO with Fifo8
One of the two FIFO implementations QEMUFIFO and Fifo8 is
redundant. Replace QEMUFIFO with Fifo8.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210916192239.18742-1-vr_qemu@t-online.de>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-11-02 17:24:18 +01:00
Markus Armbruster
fff0e451f3 Remove superfluous ERRP_GUARD()
Macro ERRP_GUARD() is only needed when we want to dereference @errp or
pass it to error_prepend() or error_append_hint().  Delete superfluous
ones.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20210720125408.387910-15-armbru@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
2021-08-26 17:15:28 +02:00
Markus Armbruster
f9734d5d40 error: Use error_fatal to simplify obvious fatal errors (again)
We did this with scripts/coccinelle/use-error_fatal.cocci before, in
commit 50beeb6809 and 007b06578a.  This commit cleans up rarer
variations that don't seem worth matching with Coccinelle.

Cc: Thomas Huth <thuth@redhat.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Juan Quintela <quintela@redhat.com>
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20210720125408.387910-2-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2021-08-26 17:15:28 +02:00
Thomas Huth
66c2207fd2 ui: Make the DisplayType enum entries conditional
Libvirt's "domcapabilities" command has a way to state whether certain
graphic frontends are available in QEMU or not. Originally, libvirt
looked at the "--help" output of the QEMU binary to determine whether
SDL was available or not (by looking for the "-sdl" parameter in the
help text), but since libvirt stopped doing this analysis of the help
text, the detection of SDL is currently broken, see:

 https://bugzilla.redhat.com/show_bug.cgi?id=1790902

QEMU should provide a way via the QMP interface instead. A simple way,
without introducing additional commands, is to make the DisplayType
enum entries conditional, so that the enum only contains the entries if
the corresponding CONFIG_xxx switches have been set. This of course
only gives an indication which possibilities have been enabled during
compile-time of QEMU (and does not take into account whether modules
are later available or not for example - for this we'd need a separate
command), but anyway, this should already be good enough for the above
bug ticket, and it's a good idea anyway to make the QMP interface
conditional here, so let's simply do it.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210615090439.70926-1-thuth@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-06-23 14:42:30 +02:00
Marc-André Lureau
eb69442a06 ui: fold qemu_alloc_display in only caller
A minor code simplification.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210312100108.2706195-2-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-03-16 06:36:39 +01:00
Philippe Mathieu-Daudé
75ae7c465d ui: Replace the word 'whitelist'
Follow the inclusive terminology from the "Conscious Language in your
Open Source Projects" guidelines [*] and replace the words "whitelist"
appropriately.

[*] https://github.com/conscious-lang/conscious-lang-docs/blob/main/faq.md

Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210303184644.1639691-2-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-03-09 22:13:32 +01:00
Akihiko Odaki
c821a58ee7 ui/console: Pass placeholder surface to displays
ui/console used to accept NULL as graphic console surface, but its
semantics was inconsistent among displays:
- cocoa and gtk-egl perform NULL dereference.
- egl-headless, spice and spice-egl do nothing.
- gtk releases underlying resources.
- sdl2-2d and sdl2-gl destroys the window.
- vnc shows a message, "Display output is not active."

Fortunately, only virtio-gpu and virtio-gpu-3d assign NULL so
we can study them to figure out the desired behavior. They assign
NULL *except* for the primary display when the device is realized,
reset, or its scanout is disabled. This effectively destroys
windows for the (uninitialized) secondary displays.

To implement the consistent behavior of display device
realization/reset, this change embeds it to the operation
switching the surface. When NULL was given as a new surface when
switching, ui/console will instead passes a placeholder down
to each display listeners.

sdl destroys the window for a secondary console if its surface is a
placeholder. The other displays simply shows the placeholder.

Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Message-Id: <20210225101316.83940-2-akihiko.odaki@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-03-04 09:35:36 +01:00
Akihiko Odaki
b5a087b071 ui/console: Add placeholder flag to message surface
The surfaces created with former qemu_create_message_surface
did not display the content from the guest and always contained
simple messages describing the reason.

A display backend may want to hide the window showing such a
surface. This change renames the function to
qemu_create_placeholder_surface, and adds "placeholder" flag; the
display can check the flag to decide to do anything special like
hiding the window.

Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Message-Id: <20210225101316.83940-1-akihiko.odaki@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-03-04 09:35:36 +01:00
Marc-André Lureau
3cddb8b9e0 display/ui: add a callback to indicate GL state is flushed
Displaying rendered resources requires blocking qemu GPU to avoid extra
framebuffer copies. For an external display, via Spice currently, there
is a callback to block/unblock the rendering in the same thread.

But with the vhost-user-gpu backend, the qemu process doesn't handle
the rendering itself, and the blocking callback isn't effective.
Instead, the backend must be notified when the display code is done.

Fix this by adding a new GraphicHwOps callback to indicate the GL state
is flushed, and we are done manipulating the shared GL resources. Call
it from gtk and spice display.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210204105232.834642-19-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-02-04 15:58:54 +01:00
Marc-André Lureau
5983fdf1dc ui: check hw requirements during DCL registration
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210204105232.834642-14-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-02-04 15:58:54 +01:00
Marc-André Lureau
d0e137bc9a ui: add a DCLOps callback to check dmabuf support
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210204105232.834642-13-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-02-04 15:58:54 +01:00
Marc-André Lureau
2cc002483e ui: remove console_has_gl_dmabuf()
This check is currently limited. It only is used by vhost-user-gpu (not
by vfio-display), and will print an error repeatedly during run-time.

We are going to dissociate the GL context from the
DisplayChangeListener, and listeners may come and go. The following
patches will address this differently.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210204105232.834642-10-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-02-04 15:58:54 +01:00
Marc-André Lureau
568b12fccf ui: add gd_gl_area_scanout_disable
Require the callback, drop the fallback path.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210204105232.834642-8-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-02-04 15:58:54 +01:00
Marc-André Lureau
c110d949b8 ui: remove gl_ctx_get_current
There are no users left.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210204105232.834642-7-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-02-04 15:58:54 +01:00
Peter Maydell
729cc68373 Remove superfluous timer_del() calls
This commit is the result of running the timer-del-timer-free.cocci
script on the whole source tree.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Corey Minyard <cminyard@mvista.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201215154107.3255-4-peter.maydell@linaro.org
2021-01-08 15:13:38 +00:00
Paolo Bonzini
2f181fbd5a machine: introduce MachineInitPhase
Generalize the qdev_hotplug variable to the different phases of
machine initialization.  We would like to allow different
monitor commands depending on the phase.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-12-15 12:51:52 -05:00
Gerd Hoffmann
5c4b107f88 console: allow con==NULL in dpy_{get, set}_ui_info and dpy_ui_info_supported
Use active_console in that case like we do in many other places.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20201208115737.18581-3-kraxel@redhat.com
2020-12-11 08:06:39 +01:00
Gerd Hoffmann
c7b22c0a7c console: drop qemu_console_get_ui_info
Unused and duplicate (there is dpy_get_ui_info).

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20201208115737.18581-2-kraxel@redhat.com
2020-12-11 08:06:39 +01:00
Gerd Hoffmann
6fc5183a65 qxl: fix segfault
Add missing sanity check.
Reproducer: run qemu with "-device qxl" but without "-spice ..."

Fixes: 0d9b90ce5c ("console: make QMP/HMP screendump run in coroutine")
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20201124122936.30588-1-kraxel@redhat.com
2020-11-25 12:33:21 +01:00
lichun
1cd8b94870 console: avoid passing con=NULL to graphic_hw_update_done()
In graphic_hw_update(), first select an existing console,
a specific-console or active_console(if not specified),
then updating the console.

Signed-off-by: lichun <lichun@ruijie.com.cn>
Message-id: 1604682219-114389-1-git-send-email-lichun@ruijie.com.cn
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-11-13 07:36:33 +01:00
Marc-André Lureau
0d9b90ce5c console: make QMP/HMP screendump run in coroutine
Thanks to the monitors' coroutine support (merge commit b7092cda1b),
the screendump handler can trigger a graphic_hw_update(), yield and let
the main loop run until update is done. Then the handler is resumed, and
ppm_save() will write the screen image to disk in the coroutine context.

The IO is still blocking though, as the file is set blocking so far,
this could be addressed by some future change (with other caveats).

Related to:
https://bugzilla.redhat.com/show_bug.cgi?id=1230527

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-id: 20201027133602.3038018-4-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-11-04 08:02:25 +01:00
Marc-André Lureau
d00ec2fe86 console: modify ppm_save to take a pixman image ref
The function is going to be called from a coroutine, and may yield.
Let's ensure our image reference doesn't change over time (due to resize
etc) by keeping a ref.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20201027133602.3038018-3-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-11-04 08:02:24 +01:00
Samuel Thibault
41d004d8af ui: Fix default window_id value
./chardev/baum.c expects the default window_id value to be -1, and not 0
which could be confused with a proper window id (when numbered from 0 by
the ui backend).

This fixes getting Braille output with the curses and gtk frontends.

Fixes: f29b3431f6 ("console: move window ID code from baum to sdl")
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200914100637.eeommoflirxrgaeh@function>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-10-14 10:20:26 +02:00
Marc-André Lureau
5eaf1e48ff ui: add getter for UIInfo
The following patch is going to introduce extra fields / details to
UIInfo. Add a getter and keep the current values, instead of memset(0)

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20200927145751.365446-4-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-09-29 10:08:25 +02:00
Daniel P. Berrangé
448058aa99 util: rename qemu_open() to qemu_open_old()
We want to introduce a new version of qemu_open() that uses an Error
object for reporting problems and make this it the preferred interface.
Rename the existing method to release the namespace for the new impl.

Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-09-16 10:33:48 +01:00
Eduardo Habkost
8110fa1d94 Use DECLARE_*CHECKER* macros
Generated using:

 $ ./scripts/codeconverter/converter.py -i \
   --pattern=TypeCheckMacro $(git grep -l '' -- '*.[ch]')

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20200831210740.126168-12-ehabkost@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20200831210740.126168-13-ehabkost@redhat.com>
Message-Id: <20200831210740.126168-14-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2020-09-09 09:27:09 -04:00
Eduardo Habkost
db1015e92e Move QOM typedefs and add missing includes
Some typedefs and macros are defined after the type check macros.
This makes it difficult to automatically replace their
definitions with OBJECT_DECLARE_TYPE.

Patch generated using:

 $ ./scripts/codeconverter/converter.py -i \
   --pattern=QOMStructTypedefSplit $(git grep -l '' -- '*.[ch]')

which will split "typdef struct { ... } TypedefName"
declarations.

Followed by:

 $ ./scripts/codeconverter/converter.py -i --pattern=MoveSymbols \
    $(git grep -l '' -- '*.[ch]')

which will:
- move the typedefs and #defines above the type check macros
- add missing #include "qom/object.h" lines if necessary

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20200831210740.126168-9-ehabkost@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20200831210740.126168-10-ehabkost@redhat.com>
Message-Id: <20200831210740.126168-11-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2020-09-09 09:26:43 -04:00
Gerd Hoffmann
185951817d ui: fix vc_chr_write call in text_console_do_init
In case the string doesn't fit into the buffer snprintf returns the size
it would need, so len can be larger than the buffer.  Fix this by simply
using g_strdup_printf() instead of a static buffer.

Reported-by: Wenxiang Qian <leonwxqian@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20200701181801.27935-1-kraxel@redhat.com
2020-07-13 11:46:35 +02:00
Markus Armbruster
5325cc34a2 qom: Put name parameter before value / visitor parameter
The object_property_set_FOO() setters take property name and value in
an unusual order:

    void object_property_set_FOO(Object *obj, FOO_TYPE value,
                                 const char *name, Error **errp)

Having to pass value before name feels grating.  Swap them.

Same for object_property_set(), object_property_get(), and
object_property_parse().

Convert callers with this Coccinelle script:

    @@
    identifier fun = {
        object_property_get, object_property_parse, object_property_set_str,
        object_property_set_link, object_property_set_bool,
        object_property_set_int, object_property_set_uint, object_property_set,
        object_property_set_qobject
    };
    expression obj, v, name, errp;
    @@
    -    fun(obj, v, name, errp)
    +    fun(obj, name, v, errp)

Chokes on hw/arm/musicpal.c's lcd_refresh() with the unhelpful error
message "no position information".  Convert that one manually.

Fails to convert hw/arm/armsse.c, because Coccinelle gets confused by
ARMSSE being used both as typedef and function-like macro there.
Convert manually.

Fails to convert hw/rx/rx-gdbsim.c, because Coccinelle gets confused
by RXCPU being used both as typedef and function-like macro there.
Convert manually.  The other files using RXCPU that way don't need
conversion.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200707160613.848843-27-armbru@redhat.com>
[Straightforwad conflict with commit 2336172d9b "audio: set default
value for pcspk.iobase property" resolved]
2020-07-10 15:18:08 +02:00
Markus Armbruster
d2623129a7 qom: Drop parameter @errp of object_property_add() & friends
The only way object_property_add() can fail is when a property with
the same name already exists.  Since our property names are all
hardcoded, failure is a programming error, and the appropriate way to
handle it is passing &error_abort.

Same for its variants, except for object_property_add_child(), which
additionally fails when the child already has a parent.  Parentage is
also under program control, so this is a programming error, too.

We have a bit over 500 callers.  Almost half of them pass
&error_abort, slightly fewer ignore errors, one test case handles
errors, and the remaining few callers pass them to their own callers.

The previous few commits demonstrated once again that ignoring
programming errors is a bad idea.

Of the few ones that pass on errors, several violate the Error API.
The Error ** argument must be NULL, &error_abort, &error_fatal, or a
pointer to a variable containing NULL.  Passing an argument of the
latter kind twice without clearing it in between is wrong: if the
first call sets an error, it no longer points to NULL for the second
call.  ich9_pm_add_properties(), sparc32_ledma_realize(),
sparc32_dma_realize(), xilinx_axidma_realize(), xilinx_enet_realize()
are wrong that way.

When the one appropriate choice of argument is &error_abort, letting
users pick the argument is a bad idea.

Drop parameter @errp and assert the preconditions instead.

There's one exception to "duplicate property name is a programming
error": the way object_property_add() implements the magic (and
undocumented) "automatic arrayification".  Don't drop @errp there.
Instead, rename object_property_add() to object_property_try_add(),
and add the obvious wrapper object_property_add().

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200505152926.18877-15-armbru@redhat.com>
[Two semantic rebase conflicts resolved]
2020-05-15 07:07:58 +02:00
Felipe Franciosi
836e1b3813 qom/object: enable setter for uint types
Traditionally, the uint-specific property helpers only offer getters.
When adding object (or class) uint types, one must therefore use the
generic property helper if a setter is needed (and probably duplicate
some code writing their own getters/setters).

This enhances the uint-specific property helper APIs by adding a
bitwise-or'd 'flags' field and modifying all clients of that API to set
this paramater to OBJ_PROP_FLAG_READ. This maintains the current
behaviour whilst allowing others to also set OBJ_PROP_FLAG_WRITE (or use
the more convenient OBJ_PROP_FLAG_READWRITE) in the future (which will
automatically install a setter). Other flags may be added later.

Signed-off-by: Felipe Franciosi <felipe@nutanix.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-03-16 23:02:23 +01:00
Philippe Mathieu-Daudé
a1e8853ed2 ui/console: Display the 'none' backend in '-display help'
Commit c388f408b5 added the possibility to list the display
backends using '-display help'. Since the 'none' backend is
is not implemented as a DisplayChangeListenerOps, it is not
registered to the dpys[] array with qemu_display_register(),
and is not listed in the help output.

This might be confusing, as we list it in the man page:

  -display type
      Select type of display to use. This option is a replacement for
      the old style -sdl/-curses/... options. Valid values for type are

      none
          Do not display video output. The guest will still see an
          emulated graphics card, but its output will not be displayed
          to the QEMU user. This option differs from the -nographic
          option in that it only affects what is done with video
          output; -nographic also changes the destination of the serial
          and parallel port data.

Fix by manually listing the special 'none' backend in the help.

Suggested-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20200120192947.31613-1-philmd@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-01-21 07:29:40 +01:00
Thomas Huth
c388f408b5 ui: Print available display backends with '-display help'
We already print availabled devices with "-device help", or available
backends with "-netdev help" or "-chardev help". Let's provide a way
for the users to query the available display backends, too.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-id: 20200108144702.29969-1-thuth@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-01-14 07:26:36 +01:00
Marc-André Lureau
53a61ecbb1 screendump: use qemu_unlink()
Don't attempt to remove /dev/fdset files.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2020-01-02 16:29:32 +04:00
Marc-André Lureau
c5f2bce5ee screendump: replace FILE with QIOChannel and fix close()/qemu_close()
The file opened for ppm_save() may be a /dev/fdset, in which case a
dup fd is added to the fdset. It should be removed by calling
qemu_close(), instead of the implicit close() on fclose().

I don't see a convenient way to solve that with stdio streams, so I
switched the code to QIOChannel which uses qemu_close().

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2020-01-02 16:29:32 +04:00
Marc-André Lureau
46e5841cd2 ppm-save: pass opened fd
This will allow to pre-open the file before running the async finish
handler and avoid potential monitor fdset races.

(note: this is preliminary work for asynchronous screendump support)

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2020-01-02 13:54:57 +04:00
Marc-André Lureau
4d6316218b console: add graphic_hw_update_done()
Add a function to be called when a graphic update is done.

Declare the QXL renderer as async: render_update_cookie_num counts the
number of outstanding updates, and graphic_hw_update_done() is called
when it reaches none.

(note: this is preliminary work for asynchronous screendump support)

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2020-01-02 13:54:57 +04:00
Gerd Hoffmann
5b8541c6c7 console: fix cell overflow
Linux terminal behavior (coming from vt100 I think) is somewhat strange
when it comes to line wraps:  When a character is printed to the last
char cell of a line the cursor does NOT jump to the next line but stays
where it is.  The line feed happens when the next character is printed.

So the valid range for the cursor position is not 0 .. width-1 but
0 .. width, where x == width represents the state where the line is
full but the cursor didn't jump to the next line yet.

The code for the 'clear from start of line' control sequence (ESC[1K)
fails to handle this corner case correctly and may call
console_clear_xy() with x == width.  That will incorrectly clear the
first char cell of the next line, or in case the cursor happens to be on
the last line overflow the cell buffer by one character (three bytes).

Add a check to the loop to fix that.

Didn't spot any other places with the same problem.  But it's easy to
miss that corner case, so also allocate one extra cell as precaution, so
in case we have simliar issues lurking elsewhere it at least wouldn't be
a buffer overflow.

v2: squashed in additional checks suggested by Christophe de Dinechin.

Reported-by: Alexander Oleinik <alxndr@bu.edu>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Christophe de Dinechin <dinechin@redhat.com>
Message-id: 20190701075301.14165-1-kraxel@redhat.com
2019-07-03 10:57:12 +02:00
Markus Armbruster
0b8fa32f55 Include qemu/module.h where needed, drop it from qemu-common.h
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190523143508.25387-4-armbru@redhat.com>
[Rebased with conflicts resolved automatically, except for
hw/usb/dev-hub.c hw/misc/exynos4210_rng.c hw/misc/bcm2835_rng.c
hw/misc/aspeed_scu.c hw/display/virtio-vga.c hw/arm/stm32f205_soc.c;
ui/cocoa.m fixed up]
2019-06-12 13:18:33 +02:00
Paolo Bonzini
eae3eb3e18 qemu/queue.h: simplify reverse access to QTAILQ
The new definition of QTAILQ does not require passing the headname,
remove it.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11 15:46:55 +01:00
Peter Maydell
22571ffa0c ui/console: Remove qemu_create_display_surface_guestmem()
The qemu_create_display_surface_guestmem() function was added in
commit a77549b3ff but apparently never used. Remove it.

(The API of this function is in any case awkward as a generic
function: it assumes that a physical address uniquely identifies
a piece of memory in the system, which is mostly but not
always true.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20181122170309.4856-1-peter.maydell@linaro.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2019-01-10 08:55:17 +01:00
Marc-André Lureau
c809d1d2f4 ui: use enum to string helpers
Minor code simplification.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-id: 20180801092508.4927-1-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-08-24 08:40:10 +02:00
Marc-André Lureau
265b578c58 object: fix OBJ_PROP_LINK_UNREF_ON_RELEASE ambivalence
A link property can be set during creation, with
object_property_add_link() and later with object_property_set_link().

add_link() doesn't add a reference to the target object, while
set_link() does.

Furthemore, OBJ_PROP_LINK_UNREF_ON_RELEASE flags, set during add_link,
says whether a reference must be released when the property is destroyed.
This can lead to leaks if the property was later set_link(), as the
added reference is never released.

Instead, rename OBJ_PROP_LINK_UNREF_ON_RELEASE to OBJ_PROP_LINK_STRONG
and use that has an indication on how the link handle reference
management in set_link().

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20180531195119.22021-3-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-06-12 12:07:30 +02:00
Michal Privoznik
08d9864fa4 console: Avoid segfault in screendump
After f771c5440e it is possible to select device and
head which to take screendump from. And even though we check if
provided head number falls within range, it may still happen that
the console has no surface yet leading to SIGSEGV:

  qemu.git $ ./x86_64-softmmu/qemu-system-x86_64 \
    -qmp stdio \
    -device virtio-vga,id=video0,max_outputs=4

  {"execute":"qmp_capabilities"}
  {"execute":"screendump", "arguments":{"filename":"/tmp/screen.ppm", "device":"video0", "head":1}}
  Segmentation fault

 #0  0x00005628249dda88 in ppm_save (filename=0x56282826cbc0 "/tmp/screen.ppm", ds=0x0, errp=0x7fff52a6fae0) at ui/console.c:304
 #1  0x00005628249ddd9b in qmp_screendump (filename=0x56282826cbc0 "/tmp/screen.ppm", has_device=true, device=0x5628276902d0 "video0", has_head=true, head=1, errp=0x7fff52a6fae0) at ui/console.c:375
 #2  0x00005628247740df in qmp_marshal_screendump (args=0x562828265e00, ret=0x7fff52a6fb68, errp=0x7fff52a6fb60) at qapi/qapi-commands-ui.c:110

Here, @ds from frame #0 (or @surface from frame #1) is
dereferenced at the very beginning of ppm_save(). And because
it's NULL crash happens.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-id: cb05bb1909daa6ba62145c0194aafa05a14ed3d1.1526569138.git.mprivozn@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-05-18 09:01:14 +02:00
Gerd Hoffmann
cd6cd8fa0d console: use linked list for QemuConsoles
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20180507095424.16220-1-kraxel@redhat.com
2018-05-15 10:37:46 +02:00
Tina Zhang
7cd0afe69f console: introduce dpy_gfx_update_full
dpy_gfx_update_full is used to do the whole display surface update.

This function is proposed by Gerd Hoffmann.

Signed-off-by: Tina Zhang <tina.zhang@intel.com>
Message-id: 1524820266-27079-2-git-send-email-tina.zhang@intel.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-04-27 11:36:34 +02:00
Gerd Hoffmann
da024b1ed2 ui: add ctrl modifier support to kbd_put_qcode_console()
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20180321135041.15768-2-kraxel@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-04-09 10:40:47 +02:00
Gerd Hoffmann
9588d67e72 console: minimal hotplug suport
This patch allows to unbind devices from QemuConsoles, using the new
graphic_console_close() function.  The QemuConsole will show a static
display then, saying the device was unplugged.  When re-plugging a
display later on the QemuConsole will be reused.

Eventually we will allocate and release QemuConsoles dynamically at some
point in the future, that'll need more infrastructure though to notify
user interfaces (gtk, sdl, spice, ...) about QemuConsoles coming and
going.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-03-13 11:17:29 -06:00
Thomas Huth
f771c5440e qapi: Add device ID and head parameters to screendump
QEMU's screendump command can only take dumps from the primary display.
When using multiple VGA cards, there is no way to get a dump from a
secondary card or other display heads yet. So let's add a 'device' and
a 'head' parameter to the HMP and QMP commands to be able to specify
alternative devices and heads with the screendump command, too.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1520267868-31778-1-git-send-email-thuth@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-03-12 09:03:15 +01:00