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Spotted by Coverity.
https://bugzilla.redhat.com/show_bug.cgi?id=885644
Cc: qemu-stable@nongnu.org
Reported-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Stop abusing displaysurface fields for text mode displays.
(bpp = 0, width = cols, height = lines).
Add flags to displaystate indicating whenever text mode display
(curses) or gfx mode displays (sdl, vnc, ...) are present.
Add separate displaychangelistener callbacks for text / gfx mode
resize & updates.
This allows to enable gfx and txt diplays at the same time and also
paves the way for more cleanups in the future.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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When adding DisplayChangeListeners the set_mouse and cursor_define
callbacks have been left in DisplayState for some reason. Fix it.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Don't try to be clever and skip displaysurface reinitialization in case
the size hasn't changed. Other parameters might have changed
nevertheless, for example depth or stride, resulting in rendering being
broken then.
Trigger: boot linux guest with vesafb, start X11, make sure both vesafb
and X11 use the display same resolution. Then watch X11 screen being
upside down.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Alon Levy <alevy@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Notify any listeners such as vnc that the displaysurface has been
changed, otherwise they will segfault when first accessing the freed old
displaysurface data.
Signed-off-by: Alon Levy <alevy@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Alon Levy <alevy@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Although qxl creates a shared displaysurface when the qxl surface is
upright and doesn't need to be flipped there is no guarantee that the
surface doesn't become unshared for some reason. Rename qxl_flip to
qxl_blit and fix it to handle both flip and non-flip cases.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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RHBZ# 747011
Removes the last user of QXL_SYNC when using update drivers that use the
_ASYNC io ports.
The last user is qxl_render_update, it is called both by qxl_hw_update
which is the vga_hw_update_ptr passed to graphic_console_init, and by
qxl_hw_screen_dump.
At the same time the QXLRect area being passed to the red_worker thread
is passed as a copy, as part of the QXLCookie.
The implementation uses interface_update_area_complete with a bh to make
sure dpy_update and qxl_flip are called from the io thread, otherwise
the vga->ds->surface.data can change under our feet.
With this patch sdl+spice works fine. But spice by itself doesn't
produce the expected screendumps unless repeated a few times, due to
ppm_save being called before update_area (rendering done in spice server
thread) having a chance to complete. Fixed by next patch, but see commit
message for problem introduced by it.
Signed-off-by: Alon Levy <alevy@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Will be used in the next patch.
Signed-off-by: Alon Levy <alevy@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Tested on linux and windows guests. For negative stride, qxl_flip copies
directly to vga->ds->surface->data, for positive it's reallocated to
share qxl->guest_primary.data
Signed-off-by: Alon Levy <alevy@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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This patch fixes the local qxl renderer to not kick spice-server
in case the vm is stopped. First it is largely pointless because
we ask spice-server to process all not-yet processed commands when
the vm is stopped, so there isn't much do do anyway. Second we
avoid triggering an assert in spice-server.
The patch makes sure we still honor redraw requests, even if we don't
ask spice-server for updates. This is needed to handle displaysurface
changes with a stopped vm correctly.
With this patch applied it is possible to take screen shots (via
screendump monitor command) from a qxl gpu even in case the guest
is stopped.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Just for cleanliness; it would take a truly gigantic cursor to break.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
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The qxl renderer works only with a shared displaysurface. So better
make sure we actually have one and restore it when needed.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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spice uses negative stride value to signal the bitmap is upside down.
The qxl renderer (used for scl, vnc and screenshots) wants a positive
value because it is easier to work with. The positive value is then
stored in the very same variable, which has the drawback that the
upside-down test works only once. Fix by using two variables.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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qemu_malloc/qemu_free no longer exist after this commit.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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Convert all vga memory to the memory API. Note we need to fall back to
get_system_memory(), since the various buses don't pass the vga window
as a memory region.
We no longer need to sync the dirty bitmap of the cirrus mapped memory
banks, since the memory API takes care of that for us.
[jan: fix vga-pci logging]
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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Some of the QXL port i/o commands are waiting for the spice server to
complete certain actions. Add async versions for these commands, so we
don't block the vcpu while the spice server processses the command.
Instead the qxl device will raise an IRQ when done.
The async command processing relies on an added QXLInterface::async_complete
and added QXLWorker::*_async additions, in spice server qxl >= 3.1
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Alon Levy <alevy@redhat.com>
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Move the wrapper functions which are used by qxl only to qxl.c.
Rename them from qemu_spice_* to qxl_spice_*. Also pass in a
qxl state pointer instead of a SimpleSpiceDisplay pointer.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Add wrapper functions for all spice worker calls.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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This patch moves the displaystate callback calls for setting the cursor
and the mouse pointer from spice server to qemu (iothread) context.
This allows us to simplify locking.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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qxl is a paravirtual graphics card. The qxl device is the bridge
between the guest and the spice server (aka libspice-server). The
spice server will send the rendering commands to the spice client, which
will actually render them.
The spice server is also able to render locally, which is done in case
the guest wants read something from video memory. Local rendering is
also used to support display over vnc and sdl.
qxl is activated using "-vga qxl". qxl supports multihead, additional
cards can be added via '-device qxl".
[ v2: add copyright to files ]
[ v2: use qemu-common.h for standard includes ]
[ v2: create separate qxl-vga device for primary ]
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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