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2018-08-24ui: use enum to string helpersMarc-André Lureau
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>
2018-06-12object: fix OBJ_PROP_LINK_UNREF_ON_RELEASE ambivalenceMarc-André Lureau
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>
2018-05-18console: Avoid segfault in screendumpMichal Privoznik
After f771c5440e04626f1 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>
2018-05-15console: use linked list for QemuConsolesGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180507095424.16220-1-kraxel@redhat.com
2018-04-27console: introduce dpy_gfx_update_fullTina Zhang
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>
2018-04-09ui: add ctrl modifier support to kbd_put_qcode_console()Gerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180321135041.15768-2-kraxel@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-03-13console: minimal hotplug suportGerd Hoffmann
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>
2018-03-12qapi: Add device ID and head parameters to screendumpThomas Huth
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>
2018-03-12vnc: deal with surface NULL pointersGerd Hoffmann
Secondary displays in multihead setups are allowed to have a NULL DisplaySurface. Typically user interfaces handle this by hiding the window which shows the display in question. This isn't an option for vnc though because it simply hasn't a concept of windows or outputs. So handle the situation by showing a placeholder DisplaySurface instead. Also check in console_select whenever a surface is preset in the first place before requesting an update. This fixes a segfault which can be triggered by switching to an unused display (via vtrl-alt-<nr>) in a multihead setup, for example using -device virtio-vga,max_outputs=2. Cc: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Message-id: 20180308161803.6152-1-kraxel@redhat.com
2018-03-05Merge remote-tracking branch 'remotes/kraxel/tags/ui-20180305-pull-request' ↵Peter Maydell
into staging ui: build curses, gtk and sdl as modules. # gpg: Signature made Mon 05 Mar 2018 08:48:24 GMT # gpg: using RSA key 4CB6D8EED3E87138 # gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" # gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" # gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" # Primary key fingerprint: A032 8CFF B93A 17A7 9901 FE7D 4CB6 D8EE D3E8 7138 * remotes/kraxel/tags/ui-20180305-pull-request: ui/sdl: build as module audio: rename CONFIG_* to CONFIG_AUDIO_* ui/curses: build as module ui/gtk: build as module configure: opengl doesn't depend on x11 configure: add X11 vars to config-host.mak console: add ui module loading support console: add and use qemu_display_find_default egl-headless: switch over to new display registry curses: switch over to new display registry cocoa: switch over to new display registry sdl: switch over to new display registry console: add qemu display registry, add gtk Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-03-05console: add ui module loading supportGerd Hoffmann
If a requested user interface is not available, try loading it as module, simliar to block layer modules. Needed to keep things working when followup patches start to build user interfaces as modules. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180301100547.18962-8-kraxel@redhat.com
2018-03-05console: add and use qemu_display_find_defaultGerd Hoffmann
Using the new display registry instead of #ifdefs in vl.c. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180301100547.18962-7-kraxel@redhat.com
2018-03-05console: add qemu display registry, add gtkGerd Hoffmann
Add a registry for user interfaces. Add qemu_display_init and qemu_display_early_init helper functions for display initialization. Hook up gtk ui as first user. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180301100547.18962-2-kraxel@redhat.com
2018-03-02Include less of the generated modular QAPI headersMarkus Armbruster
In my "build everything" tree, a change to the types in qapi-schema.json triggers a recompile of about 4800 out of 5100 objects. The previous commit split up qmp-commands.h, qmp-event.h, qmp-visit.h, qapi-types.h. Each of these headers still includes all its shards. Reduce compile time by including just the shards we actually need. To illustrate the benefits: adding a type to qapi/migration.json now recompiles some 2300 instead of 4800 objects. The next commit will improve it further. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180211093607.27351-24-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> [eblake: rebase to master] Signed-off-by: Eric Blake <eblake@redhat.com>
2018-02-22console/opengl: split up dpy_gl_cursor opsGerd Hoffmann
Split the cursor callback into two, one for setting the dmabuf, one for setting the position. Also add hotspot information. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180220110433.20353-2-kraxel@redhat.com
2018-02-09Move include qemu/option.h from qemu-common.h to actual usersMarkus Armbruster
qemu-common.h includes qemu/option.h, but most places that include the former don't actually need the latter. Drop the include, and add it to the places that actually need it. While there, drop superfluous includes of both headers, and separate #include from file comment with a blank line. This cleanup makes the number of objects depending on qemu/option.h drop from 4545 (out of 4743) to 284 in my "build everything" tree. Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180201111846.21846-20-armbru@redhat.com> [Semantic conflict with commit bdd6a90a9e in block/nvme.c resolved]
2018-02-09Include qapi/error.h exactly where neededMarkus Armbruster
This cleanup makes the number of objects depending on qapi/error.h drop from 1910 (out of 4743) to 1612 in my "build everything" tree. While there, separate #include from file comment with a blank line, and drop a useless comment on why qemu/osdep.h is included first. Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180201111846.21846-5-armbru@redhat.com> [Semantic conflict with commit 34e304e975 resolved, OSX breakage fixed]
2017-11-10ui: fix dcl unregisterGerd Hoffmann
register checks for dcl->ds being NULL, to avoid registering the same dcl twice. Therefore dcl->ds must be cleared on unregister, otherwise un-registering and re-registering doesn't work. Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1510809 Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 20171109105154.29414-1-kraxel@redhat.com
2017-10-17console: add support for dmabufsGerd Hoffmann
This patch adds support for dma-bufs to the qemu console interfaces. It adds a new "struct QemuDmaBuf" to represent a dmabuf with accociated metatdata (size, format). It adds three functions (and DisplayChangeListenerOps operations) to set a dma-buf as display scanout, as cursor and to release a dmabuf. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20171010135453.6704-2-kraxel@redhat.com
2017-09-13console: add question-mark escape operatorAlexander Graf
Some termcaps (found using SLES11SP1) use [? sequences. According to man console_codes (http://linux.die.net/man/4/console_codes) the question mark is a nop and should simply be ignored. This patch does exactly that, rendering screen output readable when outputting guest serial consoles to the graphical console emulator. Signed-off-by: Alexander Graf <agraf@suse.de> Message-id: 20170829113818.42482-1-agraf@suse.de Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-09-13console: fix dpy_gfx_replace_surface assertGerd Hoffmann
virtio-gpu can trigger the assert added by commit "6905b93447 console: add same surface replace pre-condition" in multihead setups (where surface can be NULL for secondary displays). Allow surface being NULL. Fixes: 6905b93447a42e606dfd126b90f75f4cd3c6fe94 Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 20170906142109.2685-1-kraxel@redhat.com
2017-06-22Merge remote-tracking branch 'remotes/kraxel/tags/queue/ui-pull-request' ↵Peter Maydell
into staging # gpg: Signature made Wed 21 Jun 2017 14:23:31 BST # gpg: using RSA key 0x4CB6D8EED3E87138 # gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" # gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" # gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" # Primary key fingerprint: A032 8CFF B93A 17A7 9901 FE7D 4CB6 D8EE D3E8 7138 * remotes/kraxel/tags/queue/ui-pull-request: ui: Remove inclusion of "hw/qdev.h" console: remove do_safe_dpy_refresh gtk: use framebuffer helper functions. sdl2: use framebuffer helper functions. egl-headless: use framebuffer helper functions. egl-helpers: add helpers to handle opengl framebuffers Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-06-21console: remove do_safe_dpy_refreshGerd Hoffmann
Drop the temporary workaround for the broken display updates. All display adapters are updated, so this should be safe without causing regressions. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 20170614084538.32480-1-kraxel@redhat.com
2017-06-20console: use get_uint() for "head" propertyMarc-André Lureau
TYPE_QEMU_CONSOLE property "head" is defined with object_property_add_uint*_ptr(). Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20170607163635.17635-41-marcandre.lureau@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2017-06-02char: move CharBackend handling in char-fe unitMarc-André Lureau
Move all the frontend struct and methods to a seperate unit. This avoids accidentally mixing backend and frontend calls, and helps with readabilty. Make qemu_chr_replay() a macro shared by both char and char-fe. Export qemu_chr_write(), and use a macro for qemu_chr_write_all() (nb: yes, CharBackend is for char frontend :) Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2017-06-02chardev: move headers to include/chardevMarc-André Lureau
So they are all in one place. The following patch will move serial & parallel declarations to the respective headers. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2017-05-04char: remove qemu_chr_be_generic_openMarc-André Lureau
The function simply alias and hides the real event function. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2017-04-24console: add same displaychangelistener registration pre-conditionMarc-André Lureau
Catch an invalid state. Mainly useful for documentation purposes. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 20170406120513.638-3-marcandre.lureau@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-04-24console: add same surface replace pre-conditionMarc-André Lureau
Catch an invalid state early, before a potential use-after-free. This is mainly useful for documentation purposes. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 20170406120513.638-2-marcandre.lureau@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-03-28ui/console: use exclusive mechanism directlyAlex Bennée
The previous commit (8bb93c6f99) using async_safe_run_on_cpu() doesn't work on graphics sub-system which restrict which threads can do GUI updates. Rather the special casing MacOS we just directly call the helper and move all the exclusive handling into do_dafe_dpy_refresh(). The unfortunate bouncing of the BQL is to ensure there is no deadlock as vCPUs waiting on the BQL are kicked into their quiescent state. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
2017-03-28ui/console: ensure do_safe_dpy_refresh holds BQLAlex Bennée
I missed the fact that when an exclusive work item runs it drops the BQL to ensure all no vCPUs are stuck waiting for it, hence causing a deadlock. However the actual helper needs to take the BQL especially as we'll be messing with device emulation bits during the update which all assume BQL is held. We make a minor cpu_reloading_memory_map which must try and unlock the RCU if we are actually outside the running context. Reported-by: Laurent Desnogues <laurent.desnogues@gmail.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
2017-03-17ui/console: ensure graphic updates don't race with TCG vCPUsAlex Bennée
Commit 8d04fb55.. tcg: drop global lock during TCG code execution ..broke the assumption that updates to the GUI couldn't happen at the same time as TCG vCPUs where running. As a result the TCG vCPU could still be updating a directly mapped frame-buffer while the display side was updating. This would cause artefacts to appear when the update code assumed that memory block hadn't changed. The simplest solution is to ensure the two things can't happen at the same time like the old BQL locking scheme. Here we use the solution introduced for MTTCG and schedule the update as async_safe_work when we know no vCPUs can be running. Reported-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 20170315144825.3108-1-alex.bennee@linaro.org Cc: BALATON Zoltan <balaton@eik.bme.hu> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> [ kraxel: updated comment clarifying the display adapters are buggy and this is a temporary workaround ] Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-03-16cirrus/vnc: zap bitblit support from console code.Gerd Hoffmann
There is a special code path (dpy_gfx_copy) to allow graphic emulation notify user interface code about bitblit operations carryed out by guests. It is supported by cirrus and vnc server. The intended purpose is to optimize display scrolls and just send over the scroll op instead of a full display update. This is rarely used these days though because modern guests simply don't use the cirrus blitter any more. Any linux guest using the cirrus drm driver doesn't. Any windows guest newer than winxp doesn't ship with a cirrus driver any more and thus uses the cirrus as simple framebuffer. So this code tends to bitrot and bugs can go unnoticed for a long time. See for example commit "3e10c3e vnc: fix qemu crash because of SIGSEGV" which fixes a bug lingering in the code for almost a year, added by commit "c7628bf vnc: only alloc server surface with clients connected". Also the vnc server will throttle the frame rate in case it figures the network can't keep up (send buffers are full). This doesn't work with dpy_gfx_copy, for any copy operation sent to the vnc client we have to send all outstanding updates beforehand, otherwise the vnc client might run the client side blit on outdated data and thereby corrupt the display. So this dpy_gfx_copy "optimization" might even make things worse on slow network links. Lets kill it once for all. Oh, and one more reason: Turns out (after writing the patch) we have a security bug in that code path ... Fixes: CVE-2016-9603 Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 1489494419-14340-1-git-send-email-kraxel@redhat.com
2017-02-27console: add dpy_gl_scanout_disableGerd Hoffmann
Helper function (and DisplayChangeListenerOps ptr) to disable scanouts. Replaces using dpy_gl_scanout_texture with 0x0 size and no texture specified. Allows cleanups to make the io and gfx emulation code more readable. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 1487669841-13668-3-git-send-email-kraxel@redhat.com
2017-02-27console: rename dpy_gl_scanout to dpy_gl_scanout_textureGerd Hoffmann
We'll add a variant which accepts dmabufs soon. Change the name so we can easily disturgish the two variants. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 1487669841-13668-2-git-send-email-kraxel@redhat.com
2017-02-02Merge remote-tracking branch 'remotes/elmarco/tags/chr-split-pull-request' ↵Peter Maydell
into staging # gpg: Signature made Tue 31 Jan 2017 19:32:40 GMT # gpg: using RSA key 0xDAE8E10975969CE5 # gpg: Good signature from "Marc-André Lureau <marcandre.lureau@redhat.com>" # gpg: aka "Marc-André Lureau <marcandre.lureau@gmail.com>" # gpg: WARNING: This key is not certified with sufficiently trusted signatures! # gpg: It is not certain that the signature belongs to the owner. # Primary key fingerprint: 87A9 BD93 3F87 C606 D276 F62D DAE8 E109 7596 9CE5 * remotes/elmarco/tags/chr-split-pull-request: (41 commits) char: headers clean-up char: move parallel chardev in its own file char: move serial chardev to its own file char: move pty chardev in its own file char: move pipe chardev in its own file char: move console in its own file char: move stdio in its own file char: move file chardev in its own file char: move udp chardev in its own file char: move socket chardev to its own file char: move win-stdio into its own file char: move win chardev base class in its own file char: move fd chardev in its own file char: move QIOChannel-related stuff to char-io.h char: remove unused READ_RETRIES char: rename and move to header CHR_READ_BUF_LEN char: move ringbuf/memory to its own file char: move mux to its own file char: move null chardev to its own file char: make null_chr_write() the default method ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-01-31console: fix console resizeGerd Hoffmann
Only skip surface reallocation in case the old surface was created using qemu_alloc_display (via qemu_create_displaysurface) too, otherwise we might end up with a DisplaySurface with the wrong backing storage. Cc: 1658634@bugs.launchpad.net Fixes: cd958edb1fae85d0c7d1e1acbff82d22724e8d64 Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Tested-by: Laszlo Ersek <lersek@redhat.com> Message-id: 1485256239-12219-1-git-send-email-kraxel@redhat.com
2017-01-31char: remove class kind fieldMarc-André Lureau
The class kind is necessary to lookup the chardev name in qmp_chardev_add() after calling qemu_chr_new_from_opts() and to set the appropriate ChardevBackend (mainly to free the right fields). qemu_chr_new_from_opts() can be changed to use a non-qmp function using the chardev class typename. Introduce qemu_chardev_add() to be called from qemu_chr_new_from_opts() and remove the class chardev kind field. Set the backend->type in the parse callback (when non-common fields are added). Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2017-01-31char: get rid of CharDriverMarc-André Lureau
qemu_chr_new_from_opts() is modified to not need CharDriver backend[] array, but uses instead objectified qmp_query_chardev_backends() and char_get_class(). The alias field is moved outside in a ChardevAlias[], similar to QDevAlias for devices. "kind" and "parse" are moved to ChardevClass ("kind" is to be removed next) Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2017-01-27chardev: qom-ifyMarc-André Lureau
Turn Chardev into Object. qemu_chr_alloc() is replaced by the qemu_chardev_new() constructor. It will call qemu_char_open() to open/intialize the chardev with the ChardevCommon *backend settings. The CharDriver::create() callback is turned into a ChardevClass::open() which is called from the newly introduced qemu_chardev_open(). "chardev-gdb" and "chardev-hci" are internal chardev and aren't creatable directly with -chardev. Use a new internal flag to disable them. We may want to use TYPE_USER_CREATABLE interface instead, or perhaps allow -chardev usage. Although in general we keep typename and macros private, unless the type is being used by some other file, in this patch, all types and common helper macros for qemu-char.c are in char.h. This is to help transition now (some types must be declared early, while some aren't shared) and when splitting in several units. This is to be improved later. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-01-27vc: use a common prefix for chr callbacksMarc-André Lureau
vc_chr_write() is more appropriate than _puts() since no newline is appended, even though it's not used only as a callback. Keep "qemu_chr_parse" prefix, most chardev parse functions use this prefix atm. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-01-27gtk: overwrite the console.c char driverMarc-André Lureau
Instead of registering a vc handler to allocate the Gtk VC Chardev, overwrite the console.c char driver. A later patch, when switching to QOM, will register a default console vc QOM class if none has been registered before. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-01-27char: rename CharDriverState ChardevMarc-André Lureau
Pick a uniform chardev type name. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-01-27char: allocate CharDriverState as a single objectMarc-André Lureau
Use a single allocation for CharDriverState, this avoids extra allocations & pointers, and is a step towards more object-oriented CharDriver. Gtk console is a bit peculiar, gd_vc_chr_set_echo() used to have a temporary VirtualConsole to save the echo bit. Instead now, we consider whether vcd->console is set or not, and restore the echo bit saved in VCDriverState when calling gd_vc_vte_init(). The casts added are temporary, they are replaced with QOM type-safe macros in a later patch in this series. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-01-27char: move callbacks in CharDriverMarc-André Lureau
This makes the code more declarative, and avoids duplicating the information on all instances. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-01-27char: use a const CharDriverMarc-André Lureau
No need to allocate & copy fields, let's use static const struct instead. Add an alias field to the CharDriver structure to cover the cases where we previously registered a driver twice under two names. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-01-10console: add API to get underlying gui window IDSamuel Thibault
This adds two console functions, qemu_console_set_window_id and qemu_graphic_console_get_window_id, to let graphical backend record the window id in the QemuConsole structure, and let the baum driver read it. Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Message-id: 20161221003806.22412-2-samuel.thibault@ens-lyon.org Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2016-10-24char: remove explicit_be_open from CharDriverStateMarc-André Lureau
It's only used in qmp_chardev_add(), so use a create() argument instead. Also switched to typedef functions for CharDriverParse/CharDriverCreate. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20161022100951.19562-7-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-10-24char: move front end handlers in CharBackendMarc-André Lureau
Since the hanlders are associated with a CharBackend, rather than the CharDriverState, it is more appropriate to store in CharBackend. This avoids the handler copy dance in qemu_chr_fe_set_handlers() then mux_chr_update_read_handler(), by storing the CharBackend pointer directly. Also a mux CharDriver should go through mux->backends[focused], since chr->be will stay NULL. Before that, it was possible to call chr->handler by mistake with surprising results, for ex through qemu_chr_be_can_write(), which would result in calling the last set handler front end, not the one with focus. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20161022095318.17775-22-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-10-24char: remove init callbackMarc-André Lureau
The CharDriverState.init() callback is no longer set since commit a61ae7f88ce and thus unused. The only user, the malta FGPA display has been converted to use an event "opened" callback instead. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20161022095318.17775-7-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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