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qxl: add QXL_IO_FLUSH_{SURFACES,RELEASE} for guest S3&S4 support

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Add two new IOs.
 QXL_IO_FLUSH_SURFACES - equivalent to update area for all surfaces, used
  to reduce vmexits from NumSurfaces to 1 on guest S3, S4 and resolution change (windows
  driver implementation is such that this is done on each of those occasions).
 QXL_IO_FLUSH_RELEASE - used to ensure anything on last_release is put on the release ring
  for the client to free.

Signed-off-by: Yonit Halperin <yhalperi@redhat.com>
Signed-off-by: Alon Levy <alevy@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Alon Levy 2011-07-20 12:20:59 +03:00 committed by Gerd Hoffmann
parent 5ff4e36c80
commit 3e16b9c534
1 changed files with 30 additions and 0 deletions
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30
hw/qxl.c
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@ -185,6 +185,13 @@ static void qxl_spice_destroy_surface_wait(PCIQXLDevice *qxl, uint32_t id,
}
}
#if SPICE_INTERFACE_QXL_MINOR >= 1
static void qxl_spice_flush_surfaces_async(PCIQXLDevice *qxl)
{
spice_qxl_flush_surfaces_async(&qxl->ssd.qxl, 0);
}
#endif
void qxl_spice_loadvm_commands(PCIQXLDevice *qxl, struct QXLCommandExt *ext,
uint32_t count)
{
@ -1184,6 +1191,8 @@ static void ioport_write(void *opaque, uint32_t addr, uint32_t val)
goto async_common;
case QXL_IO_DESTROY_ALL_SURFACES_ASYNC:
io_port = QXL_IO_DESTROY_ALL_SURFACES;
goto async_common;
case QXL_IO_FLUSH_SURFACES_ASYNC:
async_common:
async = QXL_ASYNC;
qemu_mutex_lock(&d->async_lock);
@ -1296,6 +1305,27 @@ async_common:
}
qxl_spice_destroy_surface_wait(d, val, async);
break;
#if SPICE_INTERFACE_QXL_MINOR >= 1
case QXL_IO_FLUSH_RELEASE: {
QXLReleaseRing *ring = &d->ram->release_ring;
if (ring->prod - ring->cons + 1 == ring->num_items) {
fprintf(stderr,
"ERROR: no flush, full release ring [p%d,%dc]\n",
ring->prod, ring->cons);
}
qxl_push_free_res(d, 1 /* flush */);
dprint(d, 1, "QXL_IO_FLUSH_RELEASE exit (%s, s#=%d, res#=%d,%p)\n",
qxl_mode_to_string(d->mode), d->guest_surfaces.count,
d->num_free_res, d->last_release);
break;
}
case QXL_IO_FLUSH_SURFACES_ASYNC:
dprint(d, 1, "QXL_IO_FLUSH_SURFACES_ASYNC (%d) (%s, s#=%d, res#=%d)\n",
val, qxl_mode_to_string(d->mode), d->guest_surfaces.count,
d->num_free_res);
qxl_spice_flush_surfaces_async(d);
break;
#endif
case QXL_IO_DESTROY_ALL_SURFACES:
d->mode = QXL_MODE_UNDEFINED;
qxl_spice_destroy_surfaces(d, async);