Update to xserver 1.20.5. Tested by jsg@

1 files changed, 843 insertions, 0 deletions

diff --git a/xserver/present/present_scmd.c b/xserver/present/present_scmd.c
new file mode 100644
index 000000000..3b7fbd832
--- /dev/null
+++ b/xserver/present/present_scmd.c
@@ -0,0 +1,843 @@
+/*
+ * Copyright © 2013 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include "present_priv.h"
+#include <misync.h>
+#include <misyncstr.h>
+#ifdef MONOTONIC_CLOCK
+#include <time.h>
+#endif
+
+/*
+ * Screen flip mode
+ *
+ * Provides the default mode for drivers, that do not
+ * support flips and the full screen flip mode.
+ *
+ */
+
+static uint64_t         present_event_id;
+static struct xorg_list present_exec_queue;
+static struct xorg_list present_flip_queue;
+
+static void
+present_execute(present_vblank_ptr vblank, uint64_t ust, uint64_t crtc_msc);
+
+static void
+present_scmd_create_event_id(present_window_priv_ptr window_priv,
+                             present_vblank_ptr vblank)
+{
+    vblank->event_id = ++present_event_id;
+}
+
+static inline PixmapPtr
+present_flip_pending_pixmap(ScreenPtr screen)
+{
+    present_screen_priv_ptr     screen_priv = present_screen_priv(screen);
+
+    if (!screen_priv)
+        return NULL;
+
+    if (!screen_priv->flip_pending)
+        return NULL;
+
+    return screen_priv->flip_pending->pixmap;
+}
+
+static Bool
+present_check_flip(RRCrtcPtr            crtc,
+                   WindowPtr            window,
+                   PixmapPtr            pixmap,
+                   Bool                 sync_flip,
+                   RegionPtr            valid,
+                   int16_t              x_off,
+                   int16_t              y_off,
+                   PresentFlipReason   *reason)
+{
+    ScreenPtr                   screen = window->drawable.pScreen;
+    PixmapPtr                   screen_pixmap, window_pixmap;
+    WindowPtr                   root = screen->root;
+    present_screen_priv_ptr     screen_priv = present_screen_priv(screen);
+
+    if (reason)
+        *reason = PRESENT_FLIP_REASON_UNKNOWN;
+
+    if (!screen_priv)
+        return FALSE;
+
+    if (!screen_priv->info)
+        return FALSE;
+
+    if (!crtc)
+        return FALSE;
+
+    /* Check to see if the driver supports flips at all */
+    if (!screen_priv->info->flip)
+        return FALSE;
+
+    /* Make sure the window hasn't been redirected with Composite */
+    screen_pixmap = screen->GetScreenPixmap(screen);
+    window_pixmap = screen->GetWindowPixmap(window);
+    if (window_pixmap != screen_pixmap &&
+        window_pixmap != screen_priv->flip_pixmap &&
+        window_pixmap != present_flip_pending_pixmap(screen))
+        return FALSE;
+
+    /* Check for full-screen window */
+    if (!RegionEqual(&window->clipList, &root->winSize)) {
+        return FALSE;
+    }
+
+    /* Source pixmap must align with window exactly */
+    if (x_off || y_off) {
+        return FALSE;
+    }
+
+    /* Make sure the area marked as valid fills the screen */
+    if (valid && !RegionEqual(valid, &root->winSize)) {
+        return FALSE;
+    }
+
+    /* Does the window match the pixmap exactly? */
+    if (window->drawable.x != 0 || window->drawable.y != 0 ||
+#ifdef COMPOSITE
+        window->drawable.x != pixmap->screen_x || window->drawable.y != pixmap->screen_y ||
+#endif
+        window->drawable.width != pixmap->drawable.width ||
+        window->drawable.height != pixmap->drawable.height ||
+        pixmap->devKind != screen_pixmap->devKind) {
+        return FALSE;
+    }
+
+    /* Ask the driver for permission */
+    if (screen_priv->info->version >= 1 && screen_priv->info->check_flip2) {
+        if (!(*screen_priv->info->check_flip2) (crtc, window, pixmap, sync_flip, reason)) {
+            DebugPresent(("\td %08" PRIx32 " -> %08" PRIx32 "\n", window->drawable.id, pixmap ? pixmap->drawable.id : 0));
+            return FALSE;
+        }
+    } else if (screen_priv->info->check_flip) {
+        if (!(*screen_priv->info->check_flip) (crtc, window, pixmap, sync_flip)) {
+            DebugPresent(("\td %08" PRIx32 " -> %08" PRIx32 "\n", window->drawable.id, pixmap ? pixmap->drawable.id : 0));
+            return FALSE;
+        }
+    }
+
+    return TRUE;
+}
+
+static Bool
+present_flip(RRCrtcPtr crtc,
+             uint64_t event_id,
+             uint64_t target_msc,
+             PixmapPtr pixmap,
+             Bool sync_flip)
+{
+    ScreenPtr                   screen = crtc->pScreen;
+    present_screen_priv_ptr     screen_priv = present_screen_priv(screen);
+
+    return (*screen_priv->info->flip) (crtc, event_id, target_msc, pixmap, sync_flip);
+}
+
+static RRCrtcPtr
+present_scmd_get_crtc(present_screen_priv_ptr screen_priv, WindowPtr window)
+{
+    if (!screen_priv->info)
+        return NULL;
+
+    return (*screen_priv->info->get_crtc)(window);
+}
+
+static uint32_t
+present_scmd_query_capabilities(present_screen_priv_ptr screen_priv)
+{
+    if (!screen_priv->info)
+        return 0;
+
+    return screen_priv->info->capabilities;
+}
+
+static int
+present_get_ust_msc(ScreenPtr screen, RRCrtcPtr crtc, uint64_t *ust, uint64_t *msc)
+{
+    present_screen_priv_ptr     screen_priv = present_screen_priv(screen);
+
+    if (crtc == NULL)
+        return present_fake_get_ust_msc(screen, ust, msc);
+    else
+        return (*screen_priv->info->get_ust_msc)(crtc, ust, msc);
+}
+
+static void
+present_flush(WindowPtr window)
+{
+    ScreenPtr                   screen = window->drawable.pScreen;
+    present_screen_priv_ptr     screen_priv = present_screen_priv(screen);
+
+    if (!screen_priv)
+        return;
+
+    if (!screen_priv->info)
+        return;
+
+    (*screen_priv->info->flush) (window);
+}
+
+static int
+present_queue_vblank(ScreenPtr screen,
+                     WindowPtr window,
+                     RRCrtcPtr crtc,
+                     uint64_t event_id,
+                     uint64_t msc)
+{
+    Bool                        ret;
+
+    if (crtc == NULL)
+        ret = present_fake_queue_vblank(screen, event_id, msc);
+    else
+    {
+        present_screen_priv_ptr     screen_priv = present_screen_priv(screen);
+        ret = (*screen_priv->info->queue_vblank) (crtc, event_id, msc);
+    }
+    return ret;
+}
+
+static uint64_t
+present_window_to_crtc_msc(WindowPtr window, RRCrtcPtr crtc, uint64_t window_msc, uint64_t new_msc)
+{
+    present_window_priv_ptr     window_priv = present_get_window_priv(window, TRUE);
+
+    if (crtc != window_priv->crtc) {
+        uint64_t        old_ust, old_msc;
+
+        if (window_priv->crtc == PresentCrtcNeverSet) {
+            window_priv->msc_offset = 0;
+        } else {
+            /* The old CRTC may have been turned off, in which case
+             * we'll just use whatever previous MSC we'd seen from this CRTC
+             */
+
+            if (present_get_ust_msc(window->drawable.pScreen, window_priv->crtc, &old_ust, &old_msc) != Success)
+                old_msc = window_priv->msc;
+
+            window_priv->msc_offset += new_msc - old_msc;
+        }
+        window_priv->crtc = crtc;
+    }
+
+    return window_msc + window_priv->msc_offset;
+}
+
+/*
+ * When the wait fence or previous flip is completed, it's time
+ * to re-try the request
+ */
+static void
+present_re_execute(present_vblank_ptr vblank)
+{
+    uint64_t            ust = 0, crtc_msc = 0;
+
+    if (vblank->crtc)
+        (void) present_get_ust_msc(vblank->screen, vblank->crtc, &ust, &crtc_msc);
+
+    present_execute(vblank, ust, crtc_msc);
+}
+
+static void
+present_flip_try_ready(ScreenPtr screen)
+{
+    present_vblank_ptr  vblank;
+
+    xorg_list_for_each_entry(vblank, &present_flip_queue, event_queue) {
+        if (vblank->queued) {
+            present_re_execute(vblank);
+            return;
+        }
+    }
+}
+
+static void
+present_flip_idle(ScreenPtr screen)
+{
+    present_screen_priv_ptr screen_priv = present_screen_priv(screen);
+
+    if (screen_priv->flip_pixmap) {
+        present_pixmap_idle(screen_priv->flip_pixmap, screen_priv->flip_window,
+                            screen_priv->flip_serial, screen_priv->flip_idle_fence);
+        if (screen_priv->flip_idle_fence)
+            present_fence_destroy(screen_priv->flip_idle_fence);
+        dixDestroyPixmap(screen_priv->flip_pixmap, screen_priv->flip_pixmap->drawable.id);
+        screen_priv->flip_crtc = NULL;
+        screen_priv->flip_window = NULL;
+        screen_priv->flip_serial = 0;
+        screen_priv->flip_pixmap = NULL;
+        screen_priv->flip_idle_fence = NULL;
+    }
+}
+
+void
+present_restore_screen_pixmap(ScreenPtr screen)
+{
+    present_screen_priv_ptr screen_priv = present_screen_priv(screen);
+    PixmapPtr screen_pixmap = (*screen->GetScreenPixmap)(screen);
+    PixmapPtr flip_pixmap;
+    WindowPtr flip_window;
+
+    if (screen_priv->flip_pending) {
+        flip_window = screen_priv->flip_pending->window;
+        flip_pixmap = screen_priv->flip_pending->pixmap;
+    } else {
+        flip_window = screen_priv->flip_window;
+        flip_pixmap = screen_priv->flip_pixmap;
+    }
+
+    assert (flip_pixmap);
+
+    /* Update the screen pixmap with the current flip pixmap contents
+     * Only do this the first time for a particular unflip operation, or
+     * we'll probably scribble over other windows
+     */
+    if (screen->root && screen->GetWindowPixmap(screen->root) == flip_pixmap)
+        present_copy_region(&screen_pixmap->drawable, flip_pixmap, NULL, 0, 0);
+
+    /* Switch back to using the screen pixmap now to avoid
+     * 2D applications drawing to the wrong pixmap.
+     */
+    if (flip_window)
+        present_set_tree_pixmap(flip_window, flip_pixmap, screen_pixmap);
+    if (screen->root)
+        present_set_tree_pixmap(screen->root, NULL, screen_pixmap);
+}
+
+void
+present_set_abort_flip(ScreenPtr screen)
+{
+    present_screen_priv_ptr screen_priv = present_screen_priv(screen);
+
+    if (!screen_priv->flip_pending->abort_flip) {
+        present_restore_screen_pixmap(screen);
+        screen_priv->flip_pending->abort_flip = TRUE;
+    }
+}
+
+static void
+present_unflip(ScreenPtr screen)
+{
+    present_screen_priv_ptr screen_priv = present_screen_priv(screen);
+
+    assert (!screen_priv->unflip_event_id);
+    assert (!screen_priv->flip_pending);
+
+    present_restore_screen_pixmap(screen);
+
+    screen_priv->unflip_event_id = ++present_event_id;
+    DebugPresent(("u %" PRIu64 "\n", screen_priv->unflip_event_id));
+    (*screen_priv->info->unflip) (screen, screen_priv->unflip_event_id);
+}
+
+static void
+present_flip_notify(present_vblank_ptr vblank, uint64_t ust, uint64_t crtc_msc)
+{
+    ScreenPtr                   screen = vblank->screen;
+    present_screen_priv_ptr     screen_priv = present_screen_priv(screen);
+
+    DebugPresent(("\tn %" PRIu64 " %p %" PRIu64 ": %08" PRIx32 " -> %08" PRIx32 "\n",
+                  vblank->event_id, vblank, vblank->target_msc,
+                  vblank->pixmap ? vblank->pixmap->drawable.id : 0,
+                  vblank->window ? vblank->window->drawable.id : 0));
+
+    assert (vblank == screen_priv->flip_pending);
+
+    present_flip_idle(screen);
+
+    xorg_list_del(&vblank->event_queue);
+
+    /* Transfer reference for pixmap and fence from vblank to screen_priv */
+    screen_priv->flip_crtc = vblank->crtc;
+    screen_priv->flip_window = vblank->window;
+    screen_priv->flip_serial = vblank->serial;
+    screen_priv->flip_pixmap = vblank->pixmap;
+    screen_priv->flip_sync = vblank->sync_flip;
+    screen_priv->flip_idle_fence = vblank->idle_fence;
+
+    vblank->pixmap = NULL;
+    vblank->idle_fence = NULL;
+
+    screen_priv->flip_pending = NULL;
+
+    if (vblank->abort_flip)
+        present_unflip(screen);
+
+    present_vblank_notify(vblank, PresentCompleteKindPixmap, PresentCompleteModeFlip, ust, crtc_msc);
+    present_vblank_destroy(vblank);
+
+    present_flip_try_ready(screen);
+}
+
+void
+present_event_notify(uint64_t event_id, uint64_t ust, uint64_t msc)
+{
+    present_vblank_ptr  vblank;
+    int                 s;
+
+    if (!event_id)
+        return;
+    DebugPresent(("\te %" PRIu64 " ust %" PRIu64 " msc %" PRIu64 "\n", event_id, ust, msc));
+    xorg_list_for_each_entry(vblank, &present_exec_queue, event_queue) {
+        int64_t match = event_id - vblank->event_id;
+        if (match == 0) {
+            present_execute(vblank, ust, msc);
+            return;
+        }
+    }
+    xorg_list_for_each_entry(vblank, &present_flip_queue, event_queue) {
+        if (vblank->event_id == event_id) {
+            if (vblank->queued)
+                present_execute(vblank, ust, msc);
+            else
+                present_flip_notify(vblank, ust, msc);
+            return;
+        }
+    }
+
+    for (s = 0; s < screenInfo.numScreens; s++) {
+        ScreenPtr               screen = screenInfo.screens[s];
+        present_screen_priv_ptr screen_priv = present_screen_priv(screen);
+
+        if (event_id == screen_priv->unflip_event_id) {
+            DebugPresent(("\tun %" PRIu64 "\n", event_id));
+            screen_priv->unflip_event_id = 0;
+            present_flip_idle(screen);
+            present_flip_try_ready(screen);
+            return;
+        }
+    }
+}
+
+/*
+ * 'window' is being reconfigured. Check to see if it is involved
+ * in flipping and clean up as necessary
+ */
+static void
+present_check_flip_window (WindowPtr window)
+{
+    ScreenPtr                   screen = window->drawable.pScreen;
+    present_screen_priv_ptr     screen_priv = present_screen_priv(screen);
+    present_window_priv_ptr     window_priv = present_window_priv(window);
+    present_vblank_ptr          flip_pending = screen_priv->flip_pending;
+    present_vblank_ptr          vblank;
+    PresentFlipReason           reason;
+
+    /* If this window hasn't ever been used with Present, it can't be
+     * flipping
+     */
+    if (!window_priv)
+        return;
+
+    if (screen_priv->unflip_event_id)
+        return;
+
+    if (flip_pending) {
+        /*
+         * Check pending flip
+         */
+        if (flip_pending->window == window) {
+            if (!present_check_flip(flip_pending->crtc, window, flip_pending->pixmap,
+                                    flip_pending->sync_flip, NULL, 0, 0, NULL))
+                present_set_abort_flip(screen);
+        }
+    } else {
+        /*
+         * Check current flip
+         */
+        if (window == screen_priv->flip_window) {
+            if (!present_check_flip(screen_priv->flip_crtc, window, screen_priv->flip_pixmap, screen_priv->flip_sync, NULL, 0, 0, NULL))
+                present_unflip(screen);
+        }
+    }
+
+    /* Now check any queued vblanks */
+    xorg_list_for_each_entry(vblank, &window_priv->vblank, window_list) {
+        if (vblank->queued && vblank->flip && !present_check_flip(vblank->crtc, window, vblank->pixmap, vblank->sync_flip, NULL, 0, 0, &reason)) {
+            vblank->flip = FALSE;
+            vblank->reason = reason;
+            if (vblank->sync_flip)
+                vblank->requeue = TRUE;
+        }
+    }
+}
+
+static Bool
+present_scmd_can_window_flip(WindowPtr window)
+{
+    ScreenPtr                   screen = window->drawable.pScreen;
+    PixmapPtr                   window_pixmap;
+    WindowPtr                   root = screen->root;
+    present_screen_priv_ptr     screen_priv = present_screen_priv(screen);
+
+    if (!screen_priv)
+        return FALSE;
+
+    if (!screen_priv->info)
+        return FALSE;
+
+    /* Check to see if the driver supports flips at all */
+    if (!screen_priv->info->flip)
+        return FALSE;
+
+    /* Make sure the window hasn't been redirected with Composite */
+    window_pixmap = screen->GetWindowPixmap(window);
+    if (window_pixmap != screen->GetScreenPixmap(screen) &&
+        window_pixmap != screen_priv->flip_pixmap &&
+        window_pixmap != present_flip_pending_pixmap(screen))
+        return FALSE;
+
+    /* Check for full-screen window */
+    if (!RegionEqual(&window->clipList, &root->winSize)) {
+        return FALSE;
+    }
+
+    /* Does the window match the pixmap exactly? */
+    if (window->drawable.x != 0 || window->drawable.y != 0) {
+        return FALSE;
+    }
+
+    return TRUE;
+}
+
+/*
+ * Once the required MSC has been reached, execute the pending request.
+ *
+ * For requests to actually present something, either blt contents to
+ * the screen or queue a frame buffer swap.
+ *
+ * For requests to just get the current MSC/UST combo, skip that part and
+ * go straight to event delivery
+ */
+
+static void
+present_execute(present_vblank_ptr vblank, uint64_t ust, uint64_t crtc_msc)
+{
+    WindowPtr                   window = vblank->window;
+    ScreenPtr                   screen = window->drawable.pScreen;
+    present_screen_priv_ptr     screen_priv = present_screen_priv(screen);
+
+    if (present_execute_wait(vblank, crtc_msc))
+        return;
+
+    if (vblank->flip && vblank->pixmap && vblank->window) {
+        if (screen_priv->flip_pending || screen_priv->unflip_event_id) {
+            DebugPresent(("\tr %" PRIu64 " %p (pending %p unflip %" PRIu64 ")\n",
+                          vblank->event_id, vblank,
+                          screen_priv->flip_pending, screen_priv->unflip_event_id));
+            xorg_list_del(&vblank->event_queue);
+            xorg_list_append(&vblank->event_queue, &present_flip_queue);
+            vblank->flip_ready = TRUE;
+            return;
+        }
+    }
+
+    xorg_list_del(&vblank->event_queue);
+    xorg_list_del(&vblank->window_list);
+    vblank->queued = FALSE;
+
+    if (vblank->pixmap && vblank->window) {
+
+        if (vblank->flip) {
+
+            DebugPresent(("\tf %" PRIu64 " %p %" PRIu64 ": %08" PRIx32 " -> %08" PRIx32 "\n",
+                          vblank->event_id, vblank, crtc_msc,
+                          vblank->pixmap->drawable.id, vblank->window->drawable.id));
+
+            /* Prepare to flip by placing it in the flip queue and
+             * and sticking it into the flip_pending field
+             */
+            screen_priv->flip_pending = vblank;
+
+            xorg_list_add(&vblank->event_queue, &present_flip_queue);
+            /* Try to flip
+             */
+            if (present_flip(vblank->crtc, vblank->event_id, vblank->target_msc, vblank->pixmap, vblank->sync_flip)) {
+                RegionPtr damage;
+
+                /* Fix window pixmaps:
+                 *  1) Restore previous flip window pixmap
+                 *  2) Set current flip window pixmap to the new pixmap
+                 */
+                if (screen_priv->flip_window && screen_priv->flip_window != window)
+                    present_set_tree_pixmap(screen_priv->flip_window,
+                                            screen_priv->flip_pixmap,
+                                            (*screen->GetScreenPixmap)(screen));
+                present_set_tree_pixmap(vblank->window, NULL, vblank->pixmap);
+                present_set_tree_pixmap(screen->root, NULL, vblank->pixmap);
+
+                /* Report update region as damaged
+                 */
+                if (vblank->update) {
+                    damage = vblank->update;
+                    RegionIntersect(damage, damage, &window->clipList);
+                } else
+                    damage = &window->clipList;
+
+                DamageDamageRegion(&vblank->window->drawable, damage);
+                return;
+            }
+
+            xorg_list_del(&vblank->event_queue);
+            /* Oops, flip failed. Clear the flip_pending field
+              */
+            screen_priv->flip_pending = NULL;
+            vblank->flip = FALSE;
+        }
+        DebugPresent(("\tc %p %" PRIu64 ": %08" PRIx32 " -> %08" PRIx32 "\n",
+                      vblank, crtc_msc, vblank->pixmap->drawable.id, vblank->window->drawable.id));
+        if (screen_priv->flip_pending) {
+
+            /* Check pending flip
+             */
+            if (window == screen_priv->flip_pending->window)
+                present_set_abort_flip(screen);
+        } else if (!screen_priv->unflip_event_id) {
+
+            /* Check current flip
+             */
+            if (window == screen_priv->flip_window)
+                present_unflip(screen);
+        }
+
+        present_execute_copy(vblank, crtc_msc);
+
+        if (vblank->queued) {
+            xorg_list_add(&vblank->event_queue, &present_exec_queue);
+            xorg_list_append(&vblank->window_list,
+                             &present_get_window_priv(window, TRUE)->vblank);
+            return;
+        }
+    }
+
+    present_execute_post(vblank, ust, crtc_msc);
+}
+
+static int
+present_scmd_pixmap(WindowPtr window,
+                    PixmapPtr pixmap,
+                    CARD32 serial,
+                    RegionPtr valid,
+                    RegionPtr update,
+                    int16_t x_off,
+                    int16_t y_off,
+                    RRCrtcPtr target_crtc,
+                    SyncFence *wait_fence,
+                    SyncFence *idle_fence,
+                    uint32_t options,
+                    uint64_t window_msc,
+                    uint64_t divisor,
+                    uint64_t remainder,
+                    present_notify_ptr notifies,
+                    int num_notifies)
+{
+    uint64_t                    ust = 0;
+    uint64_t                    target_msc;
+    uint64_t                    crtc_msc = 0;
+    int                         ret;
+    present_vblank_ptr          vblank, tmp;
+    ScreenPtr                   screen = window->drawable.pScreen;
+    present_window_priv_ptr     window_priv = present_get_window_priv(window, TRUE);
+    present_screen_priv_ptr     screen_priv = present_screen_priv(screen);
+
+    if (!window_priv)
+        return BadAlloc;
+
+    if (!screen_priv || !screen_priv->info)
+        target_crtc = NULL;
+    else if (!target_crtc) {
+        /* Update the CRTC if we have a pixmap or we don't have a CRTC
+         */
+        if (!pixmap)
+            target_crtc = window_priv->crtc;
+
+        if (!target_crtc || target_crtc == PresentCrtcNeverSet)
+            target_crtc = present_get_crtc(window);
+    }
+
+    ret = present_get_ust_msc(screen, target_crtc, &ust, &crtc_msc);
+
+    target_msc = present_window_to_crtc_msc(window, target_crtc, window_msc, crtc_msc);
+
+    if (ret == Success) {
+        /* Stash the current MSC away in case we need it later
+         */
+        window_priv->msc = crtc_msc;
+    }
+
+    present_adjust_timings(options,
+                           &crtc_msc,
+                           &target_msc,
+                           divisor,
+                           remainder);
+
+    /*
+     * Look for a matching presentation already on the list and
+     * don't bother doing the previous one if this one will overwrite it
+     * in the same frame
+     */
+
+    if (!update && pixmap) {
+        xorg_list_for_each_entry_safe(vblank, tmp, &window_priv->vblank, window_list) {
+
+            if (!vblank->pixmap)
+                continue;
+
+            if (!vblank->queued)
+                continue;
+
+            if (vblank->crtc != target_crtc || vblank->target_msc != target_msc)
+                continue;
+
+            DebugPresent(("\tx %" PRIu64 " %p %" PRIu64 ": %08" PRIx32 " -> %08" PRIx32 " (crtc %p)\n",
+                          vblank->event_id, vblank, vblank->target_msc,
+                          vblank->pixmap->drawable.id, vblank->window->drawable.id,
+                          vblank->crtc));
+
+            present_pixmap_idle(vblank->pixmap, vblank->window, vblank->serial, vblank->idle_fence);
+            present_fence_destroy(vblank->idle_fence);
+            dixDestroyPixmap(vblank->pixmap, vblank->pixmap->drawable.id);
+
+            vblank->pixmap = NULL;
+            vblank->idle_fence = NULL;
+            vblank->flip = FALSE;
+            if (vblank->flip_ready)
+                present_re_execute(vblank);
+        }
+    }
+
+    vblank = present_vblank_create(window,
+                                   pixmap,
+                                   serial,
+                                   valid,
+                                   update,
+                                   x_off,
+                                   y_off,
+                                   target_crtc,
+                                   wait_fence,
+                                   idle_fence,
+                                   options,
+                                   screen_priv->info ? &screen_priv->info->capabilities : NULL,
+                                   notifies,
+                                   num_notifies,
+                                   &target_msc,
+                                   crtc_msc);
+
+    if (!vblank)
+        return BadAlloc;
+
+    xorg_list_append(&vblank->event_queue, &present_exec_queue);
+    vblank->queued = TRUE;
+    if (msc_is_after(target_msc, crtc_msc)) {
+        ret = present_queue_vblank(screen, window, target_crtc, vblank->event_id, target_msc);
+        if (ret == Success)
+            return Success;
+
+        DebugPresent(("present_queue_vblank failed\n"));
+    }
+
+    present_execute(vblank, ust, crtc_msc);
+
+    return Success;
+}
+
+static void
+present_scmd_abort_vblank(ScreenPtr screen, WindowPtr window, RRCrtcPtr crtc, uint64_t event_id, uint64_t msc)
+{
+    present_vblank_ptr  vblank;
+
+    if (crtc == NULL)
+        present_fake_abort_vblank(screen, event_id, msc);
+    else
+    {
+        present_screen_priv_ptr     screen_priv = present_screen_priv(screen);
+
+        (*screen_priv->info->abort_vblank) (crtc, event_id, msc);
+    }
+
+    xorg_list_for_each_entry(vblank, &present_exec_queue, event_queue) {
+        int64_t match = event_id - vblank->event_id;
+        if (match == 0) {
+            xorg_list_del(&vblank->event_queue);
+            vblank->queued = FALSE;
+            return;
+        }
+    }
+    xorg_list_for_each_entry(vblank, &present_flip_queue, event_queue) {
+        if (vblank->event_id == event_id) {
+            xorg_list_del(&vblank->event_queue);
+            vblank->queued = FALSE;
+            return;
+        }
+    }
+}
+
+static void
+present_scmd_flip_destroy(ScreenPtr screen)
+{
+    present_screen_priv_ptr     screen_priv = present_screen_priv(screen);
+
+    /* Reset window pixmaps back to the screen pixmap */
+    if (screen_priv->flip_pending)
+        present_set_abort_flip(screen);
+
+    /* Drop reference to any pending flip or unflip pixmaps. */
+    present_flip_idle(screen);
+}
+
+void
+present_scmd_init_mode_hooks(present_screen_priv_ptr screen_priv)
+{
+    screen_priv->query_capabilities =   &present_scmd_query_capabilities;
+    screen_priv->get_crtc           =   &present_scmd_get_crtc;
+
+    screen_priv->check_flip         =   &present_check_flip;
+    screen_priv->check_flip_window  =   &present_check_flip_window;
+    screen_priv->can_window_flip    =   &present_scmd_can_window_flip;
+
+    screen_priv->present_pixmap     =   &present_scmd_pixmap;
+    screen_priv->create_event_id    =   &present_scmd_create_event_id;
+
+    screen_priv->queue_vblank       =   &present_queue_vblank;
+    screen_priv->flush              =   &present_flush;
+    screen_priv->re_execute         =   &present_re_execute;
+
+    screen_priv->abort_vblank       =   &present_scmd_abort_vblank;
+    screen_priv->flip_destroy       =   &present_scmd_flip_destroy;
+}
+
+Bool
+present_init(void)
+{
+    xorg_list_init(&present_exec_queue);
+    xorg_list_init(&present_flip_queue);
+    present_fake_queue_init();
+    return TRUE;
+}