xserver: Branch 'master' - 4 commits

Adam Jackson ajax at kemper.freedesktop.org
Fri Sep 2 18:01:15 UTC 2016


 hw/xfree86/drivers/modesetting/Makefile.am       |    1 
 hw/xfree86/drivers/modesetting/dri2.c            |  237 +++++++++++++++
 hw/xfree86/drivers/modesetting/driver.h          |   21 +
 hw/xfree86/drivers/modesetting/drmmode_display.h |    3 
 hw/xfree86/drivers/modesetting/pageflip.c        |  344 +++++++++++++++++++++++
 hw/xfree86/drivers/modesetting/present.c         |  335 ++--------------------
 6 files changed, 630 insertions(+), 311 deletions(-)

New commits:
commit f06aef31c0b2ab62d915a469a399d82a1a73ac28
Author: Qiang Yu <Qiang.Yu at amd.com>
Date:   Mon Aug 22 18:14:18 2016 +0800

    modesetting: add DRI2 page flip support
    
    Signed-off-by: Qiang Yu <Qiang.Yu at amd.com>
    Reviewed-by: Michel Dänzer <michel.daenzer at amd.com>

diff --git a/hw/xfree86/drivers/modesetting/dri2.c b/hw/xfree86/drivers/modesetting/dri2.c
index 83cb3e0..65f2ecf 100644
--- a/hw/xfree86/drivers/modesetting/dri2.c
+++ b/hw/xfree86/drivers/modesetting/dri2.c
@@ -46,6 +46,7 @@
 
 enum ms_dri2_frame_event_type {
     MS_DRI2_QUEUE_SWAP,
+    MS_DRI2_QUEUE_FLIP,
     MS_DRI2_WAIT_MSC,
 };
 
@@ -399,6 +400,197 @@ ms_dri2_blit_swap(DrawablePtr drawable,
     ms_dri2_copy_region(drawable, &region, dst, src);
 }
 
+struct ms_dri2_vblank_event {
+    XID drawable_id;
+    ClientPtr client;
+    DRI2SwapEventPtr event_complete;
+    void *event_data;
+};
+
+static void
+ms_dri2_flip_abort(modesettingPtr ms, void *data)
+{
+    struct ms_present_vblank_event *event = data;
+
+    ms->drmmode.dri2_flipping = FALSE;
+    free(event);
+}
+
+static void
+ms_dri2_flip_handler(modesettingPtr ms, uint64_t msc,
+                     uint64_t ust, void *data)
+{
+    struct ms_dri2_vblank_event *event = data;
+    uint32_t frame = msc;
+    uint32_t tv_sec = ust / 1000000;
+    uint32_t tv_usec = ust % 1000000;
+    DrawablePtr drawable;
+    int status;
+
+    status = dixLookupDrawable(&drawable, event->drawable_id, serverClient,
+                               M_ANY, DixWriteAccess);
+    if (status == Success)
+        DRI2SwapComplete(event->client, drawable, frame, tv_sec, tv_usec,
+                         DRI2_FLIP_COMPLETE, event->event_complete,
+                         event->event_data);
+
+    ms->drmmode.dri2_flipping = FALSE;
+    free(event);
+}
+
+static Bool
+ms_dri2_schedule_flip(ms_dri2_frame_event_ptr info)
+{
+    DrawablePtr draw = info->drawable;
+    ScreenPtr screen = draw->pScreen;
+    ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
+    modesettingPtr ms = modesettingPTR(scrn);
+    ms_dri2_buffer_private_ptr back_priv = info->back->driverPrivate;
+    struct ms_dri2_vblank_event *event;
+    drmmode_crtc_private_ptr drmmode_crtc = info->crtc->driver_private;
+
+    event = calloc(1, sizeof(struct ms_dri2_vblank_event));
+    if (!event)
+        return FALSE;
+
+    event->drawable_id = draw->id;
+    event->client = info->client;
+    event->event_complete = info->event_complete;
+    event->event_data = info->event_data;
+
+    if (ms_do_pageflip(screen, back_priv->pixmap, event,
+                       drmmode_crtc->vblank_pipe, FALSE,
+                       ms_dri2_flip_handler,
+                       ms_dri2_flip_abort)) {
+        ms->drmmode.dri2_flipping = TRUE;
+        return TRUE;
+    }
+    return FALSE;
+}
+
+static Bool
+update_front(DrawablePtr draw, DRI2BufferPtr front)
+{
+    ScreenPtr screen = draw->pScreen;
+    PixmapPtr pixmap = get_drawable_pixmap(draw);
+    ms_dri2_buffer_private_ptr priv = front->driverPrivate;
+    CARD32 size;
+    CARD16 pitch;
+
+    front->name = glamor_name_from_pixmap(pixmap, &pitch, &size);
+    if (front->name < 0)
+        return FALSE;
+
+    (*screen->DestroyPixmap) (priv->pixmap);
+    front->pitch = pixmap->devKind;
+    front->cpp = pixmap->drawable.bitsPerPixel / 8;
+    priv->pixmap = pixmap;
+    pixmap->refcnt++;
+
+    return TRUE;
+}
+
+static Bool
+can_exchange(ScrnInfoPtr scrn, DrawablePtr draw,
+	     DRI2BufferPtr front, DRI2BufferPtr back)
+{
+    ms_dri2_buffer_private_ptr front_priv = front->driverPrivate;
+    ms_dri2_buffer_private_ptr back_priv = back->driverPrivate;
+    PixmapPtr front_pixmap;
+    PixmapPtr back_pixmap = back_priv->pixmap;
+    xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(scrn);
+    int num_crtcs_on = 0;
+    int i;
+
+    for (i = 0; i < config->num_crtc; i++) {
+        drmmode_crtc_private_ptr drmmode_crtc = config->crtc[i]->driver_private;
+
+        /* Don't do pageflipping if CRTCs are rotated. */
+#ifdef GLAMOR_HAS_GBM
+        if (drmmode_crtc->rotate_bo.gbm)
+            return FALSE;
+#endif
+
+        if (ms_crtc_on(config->crtc[i]))
+            num_crtcs_on++;
+    }
+
+    /* We can't do pageflipping if all the CRTCs are off. */
+    if (num_crtcs_on == 0)
+        return FALSE;
+
+    if (!update_front(draw, front))
+        return FALSE;
+
+    front_pixmap = front_priv->pixmap;
+
+    if (front_pixmap->drawable.width != back_pixmap->drawable.width)
+        return FALSE;
+
+    if (front_pixmap->drawable.height != back_pixmap->drawable.height)
+        return FALSE;
+
+    if (front_pixmap->drawable.bitsPerPixel !=
+        back_pixmap->drawable.bitsPerPixel)
+        return FALSE;
+
+    if (front_pixmap->devKind != back_pixmap->devKind)
+        return FALSE;
+
+    return TRUE;
+}
+
+static Bool
+can_flip(ScrnInfoPtr scrn, DrawablePtr draw,
+	 DRI2BufferPtr front, DRI2BufferPtr back)
+{
+    modesettingPtr ms = modesettingPTR(scrn);
+
+    return draw->type == DRAWABLE_WINDOW &&
+        ms->drmmode.pageflip &&
+        !ms->drmmode.present_flipping &&
+        scrn->vtSema &&
+        DRI2CanFlip(draw) && can_exchange(scrn, draw, front, back);
+}
+
+static void
+ms_dri2_exchange_buffers(DrawablePtr draw, DRI2BufferPtr front,
+                         DRI2BufferPtr back)
+{
+    ms_dri2_buffer_private_ptr front_priv = front->driverPrivate;
+    ms_dri2_buffer_private_ptr back_priv = back->driverPrivate;
+    ScreenPtr screen = draw->pScreen;
+    ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
+    modesettingPtr ms = modesettingPTR(scrn);
+    msPixmapPrivPtr front_pix = msGetPixmapPriv(&ms->drmmode, front_priv->pixmap);
+    msPixmapPrivPtr back_pix = msGetPixmapPriv(&ms->drmmode, back_priv->pixmap);
+    msPixmapPrivRec tmp_pix;
+    RegionRec region;
+    int tmp;
+
+    /* Swap BO names so DRI works */
+    tmp = front->name;
+    front->name = back->name;
+    back->name = tmp;
+
+    /* Swap pixmap privates */
+    tmp_pix = *front_pix;
+    *front_pix = *back_pix;
+    *back_pix = tmp_pix;
+
+    glamor_egl_exchange_buffers(front_priv->pixmap, back_priv->pixmap);
+
+    /* Post damage on the front buffer so that listeners, such
+     * as DisplayLink know take a copy and shove it over the USB.
+     */
+    region.extents.x1 = region.extents.y1 = 0;
+    region.extents.x2 = front_priv->pixmap->drawable.width;
+    region.extents.y2 = front_priv->pixmap->drawable.height;
+    region.data = NULL;
+    DamageRegionAppend(&front_priv->pixmap->drawable, &region);
+    DamageRegionProcessPending(&front_priv->pixmap->drawable);
+}
+
 static void
 ms_dri2_frame_event_handler(uint64_t msc,
                             uint64_t usec,
@@ -417,6 +609,13 @@ ms_dri2_frame_event_handler(uint64_t msc,
     }
 
     switch (frame_info->type) {
+    case MS_DRI2_QUEUE_FLIP:
+        if (can_flip(scrn, drawable, frame_info->front, frame_info->back) &&
+            ms_dri2_schedule_flip(frame_info)) {
+            ms_dri2_exchange_buffers(drawable, frame_info->front, frame_info->back);
+            break;
+        }
+        /* else fall through to blit */
     case MS_DRI2_QUEUE_SWAP:
         ms_dri2_blit_swap(drawable, frame_info->front, frame_info->back);
         DRI2SwapComplete(frame_info->client, drawable, msc, tv_sec, tv_usec,
@@ -607,7 +806,7 @@ ms_dri2_schedule_swap(ClientPtr client, DrawablePtr draw,
     ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
     modesettingPtr ms = modesettingPTR(scrn);
     drmVBlank vbl;
-    int ret;
+    int ret, flip = 0;
     xf86CrtcPtr crtc = ms_dri2_crtc_covering_drawable(draw);
     drmmode_crtc_private_ptr drmmode_crtc;
     ms_dri2_frame_event_ptr frame_info = NULL;
@@ -645,20 +844,36 @@ ms_dri2_schedule_swap(ClientPtr client, DrawablePtr draw,
 
     ret = ms_get_crtc_ust_msc(crtc, &current_ust, &current_msc);
 
+    /* Flips need to be submitted one frame before */
+    if (can_flip(scrn, draw, front, back)) {
+        frame_info->type = MS_DRI2_QUEUE_FLIP;
+        flip = 1;
+    }
+
+    /* Correct target_msc by 'flip' if frame_info->type == MS_DRI2_QUEUE_FLIP.
+     * Do it early, so handling of different timing constraints
+     * for divisor, remainder and msc vs. target_msc works.
+     */
+    if (*target_msc > 0)
+        *target_msc -= flip;
+
     /*
      * If divisor is zero, or current_msc is smaller than target_msc
      * we just need to make sure target_msc passes before initiating
      * the swap.
      */
     if (divisor == 0 || current_msc < *target_msc) {
-        /* We need to use DRM_VBLANK_NEXTONMISS to avoid unreliable
-         * timestamping later on.
-         */
         vbl.request.type = (DRM_VBLANK_ABSOLUTE |
-                            DRM_VBLANK_NEXTONMISS |
                             DRM_VBLANK_EVENT |
                             drmmode_crtc->vblank_pipe);
 
+        /* If non-pageflipping, but blitting/exchanging, we need to use
+         * DRM_VBLANK_NEXTONMISS to avoid unreliable timestamping later
+         * on.
+         */
+        if (flip == 0)
+            vbl.request.type |= DRM_VBLANK_NEXTONMISS;
+
         /* If target_msc already reached or passed, set it to
          * current_msc to ensure we return a reasonable value back
          * to the caller. This makes swap_interval logic more robust.
@@ -683,7 +898,8 @@ ms_dri2_schedule_swap(ClientPtr client, DrawablePtr draw,
             goto blit_fallback;
         }
 
-        *target_msc = ms_kernel_msc_to_crtc_msc(crtc, vbl.reply.sequence);
+        *target_msc = ms_kernel_msc_to_crtc_msc(crtc,
+                                                vbl.reply.sequence + flip);
         frame_info->frame = *target_msc;
 
         return TRUE;
@@ -695,9 +911,10 @@ ms_dri2_schedule_swap(ClientPtr client, DrawablePtr draw,
      * equation.
      */
     vbl.request.type = (DRM_VBLANK_ABSOLUTE |
-                        DRM_VBLANK_NEXTONMISS |
                         DRM_VBLANK_EVENT |
                         drmmode_crtc->vblank_pipe);
+    if (flip == 0)
+        vbl.request.type |= DRM_VBLANK_NEXTONMISS;
 
     request_msc = current_msc - (current_msc % divisor) +
         remainder;
@@ -721,7 +938,8 @@ ms_dri2_schedule_swap(ClientPtr client, DrawablePtr draw,
     if (!seq)
         goto blit_fallback;
 
-    vbl.request.sequence = ms_crtc_msc_to_kernel_msc(crtc, request_msc);
+    /* Account for 1 frame extra pageflip delay if flip > 0 */
+    vbl.request.sequence = ms_crtc_msc_to_kernel_msc(crtc, request_msc) - flip;
     vbl.request.signal = (unsigned long)seq;
 
     ret = drmWaitVBlank(ms->fd, &vbl);
@@ -732,7 +950,8 @@ ms_dri2_schedule_swap(ClientPtr client, DrawablePtr draw,
         goto blit_fallback;
     }
 
-    *target_msc = ms_kernel_msc_to_crtc_msc(crtc, vbl.reply.sequence);
+    /* Adjust returned value for 1 fame pageflip offset of flip > 0 */
+    *target_msc = ms_kernel_msc_to_crtc_msc(crtc, vbl.reply.sequence + flip);
     frame_info->frame = *target_msc;
 
     return TRUE;
diff --git a/hw/xfree86/drivers/modesetting/driver.h b/hw/xfree86/drivers/modesetting/driver.h
index 38f0ec0..761490a 100644
--- a/hw/xfree86/drivers/modesetting/driver.h
+++ b/hw/xfree86/drivers/modesetting/driver.h
@@ -156,11 +156,12 @@ Bool ms_present_screen_init(ScreenPtr screen);
 
 #ifdef GLAMOR
 
-typedef void (*ms_pageflip_handler_proc)(uint64_t frame,
+typedef void (*ms_pageflip_handler_proc)(modesettingPtr ms,
+                                         uint64_t frame,
                                          uint64_t usec,
                                          void *data);
 
-typedef void (*ms_pageflip_abort_proc)(void *data);
+typedef void (*ms_pageflip_abort_proc)(modesettingPtr ms, void *data);
 
 int ms_flush_drm_events(ScreenPtr screen);
 
diff --git a/hw/xfree86/drivers/modesetting/drmmode_display.h b/hw/xfree86/drivers/modesetting/drmmode_display.h
index 6d05ec4..50976b8 100644
--- a/hw/xfree86/drivers/modesetting/drmmode_display.h
+++ b/hw/xfree86/drivers/modesetting/drmmode_display.h
@@ -80,6 +80,9 @@ typedef struct {
     Bool is_secondary;
 
     PixmapPtr fbcon_pixmap;
+
+    Bool dri2_flipping;
+    Bool present_flipping;
 } drmmode_rec, *drmmode_ptr;
 
 typedef struct {
diff --git a/hw/xfree86/drivers/modesetting/pageflip.c b/hw/xfree86/drivers/modesetting/pageflip.c
index 5f35999..a82e0d6 100644
--- a/hw/xfree86/drivers/modesetting/pageflip.c
+++ b/hw/xfree86/drivers/modesetting/pageflip.c
@@ -98,7 +98,7 @@ ms_pageflip_handler(uint64_t msc, uint64_t ust, void *data)
     }
 
     if (flipdata->flip_count == 1) {
-        flipdata->event_handler(flipdata->fe_msc,
+        flipdata->event_handler(ms, flipdata->fe_msc,
                                 flipdata->fe_usec,
                                 flipdata->event);
 
@@ -115,9 +115,12 @@ ms_pageflip_abort(void *data)
 {
     struct ms_crtc_pageflip *flip = data;
     struct ms_flipdata *flipdata = flip->flipdata;
+    ScreenPtr screen = flipdata->screen;
+    ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
+    modesettingPtr ms = modesettingPTR(scrn);
 
     if (flipdata->flip_count == 1)
-        flipdata->abort_handler(flipdata->event);
+        flipdata->abort_handler(ms, flipdata->event);
 
     ms_pageflip_free(flip);
 }
diff --git a/hw/xfree86/drivers/modesetting/present.c b/hw/xfree86/drivers/modesetting/present.c
index 0a7e75a..55b622c 100644
--- a/hw/xfree86/drivers/modesetting/present.c
+++ b/hw/xfree86/drivers/modesetting/present.c
@@ -53,6 +53,7 @@
 
 struct ms_present_vblank_event {
     uint64_t        event_id;
+    Bool            unflip;
 };
 
 static RRCrtcPtr
@@ -197,7 +198,8 @@ ms_present_flush(WindowPtr window)
  * Notify the extension code
  */
 static void
-ms_present_flip_handler(uint64_t msc, uint64_t ust, void *data)
+ms_present_flip_handler(modesettingPtr ms, uint64_t msc,
+                        uint64_t ust, void *data)
 {
     struct ms_present_vblank_event *event = data;
 
@@ -205,6 +207,9 @@ ms_present_flip_handler(uint64_t msc, uint64_t ust, void *data)
                   (long long) event->event_id,
                   (long long) msc, (long long) ust));
 
+    if (event->unflip)
+        ms->drmmode.present_flipping = FALSE;
+
     ms_present_vblank_handler(msc, ust, event);
 }
 
@@ -212,7 +217,7 @@ ms_present_flip_handler(uint64_t msc, uint64_t ust, void *data)
  * Callback for the DRM queue abort code.  A flip has been aborted.
  */
 static void
-ms_present_flip_abort(void *data)
+ms_present_flip_abort(modesettingPtr ms, void *data)
 {
     struct ms_present_vblank_event *event = data;
 
@@ -240,6 +245,9 @@ ms_present_check_flip(RRCrtcPtr crtc,
     if (!ms->drmmode.pageflip)
         return FALSE;
 
+    if (ms->drmmode.dri2_flipping)
+        return FALSE;
+
     if (!scrn->vtSema)
         return FALSE;
 
@@ -286,6 +294,7 @@ ms_present_flip(RRCrtcPtr crtc,
 {
     ScreenPtr screen = crtc->pScreen;
     ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
+    modesettingPtr ms = modesettingPTR(scrn);
     xf86CrtcPtr xf86_crtc = crtc->devPrivate;
     drmmode_crtc_private_ptr drmmode_crtc = xf86_crtc->driver_private;
     Bool ret;
@@ -302,10 +311,14 @@ ms_present_flip(RRCrtcPtr crtc,
                   (long long) event_id, (long long) target_msc));
 
     event->event_id = event_id;
+    event->unflip = FALSE;
+
     ret = ms_do_pageflip(screen, pixmap, event, drmmode_crtc->vblank_pipe, !sync_flip,
                          ms_present_flip_handler, ms_present_flip_abort);
     if (!ret)
         xf86DrvMsg(scrn->scrnIndex, X_ERROR, "present flip failed\n");
+    else
+        ms->drmmode.present_flipping = TRUE;
 
     return ret;
 }
@@ -317,6 +330,7 @@ static void
 ms_present_unflip(ScreenPtr screen, uint64_t event_id)
 {
     ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
+    modesettingPtr ms = modesettingPTR(scrn);
     PixmapPtr pixmap = screen->GetScreenPixmap(screen);
     xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(scrn);
     int i;
@@ -327,6 +341,7 @@ ms_present_unflip(ScreenPtr screen, uint64_t event_id)
         return;
 
     event->event_id = event_id;
+    event->unflip = TRUE;
 
     if (ms_present_check_flip(NULL, screen->root, pixmap, TRUE) &&
         ms_do_pageflip(screen, pixmap, event, -1, FALSE,
@@ -358,6 +373,7 @@ ms_present_unflip(ScreenPtr screen, uint64_t event_id)
     }
 
     present_event_notify(event_id, 0, 0);
+    ms->drmmode.present_flipping = FALSE;
 }
 #endif
 
commit 4a839da6274b76424ee7cbc2deba2693e97e8186
Author: Qiang Yu <Qiang.Yu at amd.com>
Date:   Mon Aug 22 18:14:17 2016 +0800

    modesetting: move common page flip handle to pageflip.c
    
    The common page flip handle framework can be shared with DRI2
    page flip.
    
    Signed-off-by: Qiang Yu <Qiang.Yu at amd.com>
    Reviewed-by: Michel Dänzer <michel.daenzer at amd.com>

diff --git a/hw/xfree86/drivers/modesetting/driver.h b/hw/xfree86/drivers/modesetting/driver.h
index c0d80a8..38f0ec0 100644
--- a/hw/xfree86/drivers/modesetting/driver.h
+++ b/hw/xfree86/drivers/modesetting/driver.h
@@ -156,34 +156,6 @@ Bool ms_present_screen_init(ScreenPtr screen);
 
 #ifdef GLAMOR
 
-/*
- * Event data for an in progress flip.
- * This contains a pointer to the vblank event,
- * and information about the flip in progress.
- * a reference to this is stored in the per-crtc
- * flips.
- */
-struct ms_flipdata {
-    ScreenPtr screen;
-    void *event;
-    /* number of CRTC events referencing this */
-    int flip_count;
-    uint64_t fe_msc;
-    uint64_t fe_usec;
-    uint32_t old_fb_id;
-};
-
-/*
- * Per crtc pageflipping infomation,
- * These are submitted to the queuing code
- * one of them per crtc per flip.
- */
-struct ms_crtc_pageflip {
-    Bool on_reference_crtc;
-    /* reference to the ms_flipdata */
-    struct ms_flipdata *flipdata;
-};
-
 typedef void (*ms_pageflip_handler_proc)(uint64_t frame,
                                          uint64_t usec,
                                          void *data);
diff --git a/hw/xfree86/drivers/modesetting/pageflip.c b/hw/xfree86/drivers/modesetting/pageflip.c
index 4549792..5f35999 100644
--- a/hw/xfree86/drivers/modesetting/pageflip.c
+++ b/hw/xfree86/drivers/modesetting/pageflip.c
@@ -32,6 +32,97 @@
 #ifdef GLAMOR
 
 /*
+ * Event data for an in progress flip.
+ * This contains a pointer to the vblank event,
+ * and information about the flip in progress.
+ * a reference to this is stored in the per-crtc
+ * flips.
+ */
+struct ms_flipdata {
+    ScreenPtr screen;
+    void *event;
+    ms_pageflip_handler_proc event_handler;
+    ms_pageflip_abort_proc abort_handler;
+    /* number of CRTC events referencing this */
+    int flip_count;
+    uint64_t fe_msc;
+    uint64_t fe_usec;
+    uint32_t old_fb_id;
+};
+
+/*
+ * Per crtc pageflipping infomation,
+ * These are submitted to the queuing code
+ * one of them per crtc per flip.
+ */
+struct ms_crtc_pageflip {
+    Bool on_reference_crtc;
+    /* reference to the ms_flipdata */
+    struct ms_flipdata *flipdata;
+};
+
+/**
+ * Free an ms_crtc_pageflip.
+ *
+ * Drops the reference count on the flipdata.
+ */
+static void
+ms_pageflip_free(struct ms_crtc_pageflip *flip)
+{
+    struct ms_flipdata *flipdata = flip->flipdata;
+
+    free(flip);
+    if (--flipdata->flip_count > 0)
+        return;
+    free(flipdata);
+}
+
+/**
+ * Callback for the DRM event queue when a single flip has completed
+ *
+ * Once the flip has been completed on all pipes, notify the
+ * extension code telling it when that happened
+ */
+static void
+ms_pageflip_handler(uint64_t msc, uint64_t ust, void *data)
+{
+    struct ms_crtc_pageflip *flip = data;
+    struct ms_flipdata *flipdata = flip->flipdata;
+    ScreenPtr screen = flipdata->screen;
+    ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
+    modesettingPtr ms = modesettingPTR(scrn);
+
+    if (flip->on_reference_crtc) {
+        flipdata->fe_msc = msc;
+        flipdata->fe_usec = ust;
+    }
+
+    if (flipdata->flip_count == 1) {
+        flipdata->event_handler(flipdata->fe_msc,
+                                flipdata->fe_usec,
+                                flipdata->event);
+
+        drmModeRmFB(ms->fd, flipdata->old_fb_id);
+    }
+    ms_pageflip_free(flip);
+}
+
+/*
+ * Callback for the DRM queue abort code.  A flip has been aborted.
+ */
+static void
+ms_pageflip_abort(void *data)
+{
+    struct ms_crtc_pageflip *flip = data;
+    struct ms_flipdata *flipdata = flip->flipdata;
+
+    if (flipdata->flip_count == 1)
+        flipdata->abort_handler(flipdata->event);
+
+    ms_pageflip_free(flip);
+}
+
+/*
  * Flush the DRM event queue when full; makes space for new events.
  *
  * Returns a negative value on error, 0 if there was nothing to process,
@@ -68,9 +159,7 @@ ms_flush_drm_events(ScreenPtr screen)
 static Bool
 queue_flip_on_crtc(ScreenPtr screen, xf86CrtcPtr crtc,
                    struct ms_flipdata *flipdata,
-                   int ref_crtc_vblank_pipe, uint32_t flags,
-                   ms_pageflip_handler_proc pageflip_handler,
-                   ms_pageflip_abort_proc pageflip_abort)
+                   int ref_crtc_vblank_pipe, uint32_t flags)
 {
     ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
     modesettingPtr ms = modesettingPTR(scrn);
@@ -92,7 +181,7 @@ queue_flip_on_crtc(ScreenPtr screen, xf86CrtcPtr crtc,
     flip->on_reference_crtc = (drmmode_crtc->vblank_pipe == ref_crtc_vblank_pipe);
     flip->flipdata = flipdata;
 
-    seq = ms_drm_queue_alloc(crtc, flip, pageflip_handler, pageflip_abort);
+    seq = ms_drm_queue_alloc(crtc, flip, ms_pageflip_handler, ms_pageflip_abort);
     if (!seq) {
         free(flip);
         return FALSE;
@@ -164,6 +253,8 @@ ms_do_pageflip(ScreenPtr screen,
 
     flipdata->event = event;
     flipdata->screen = screen;
+    flipdata->event_handler = pageflip_handler;
+    flipdata->abort_handler = pageflip_abort;
 
     /*
      * Take a local reference on flipdata.
@@ -206,8 +297,7 @@ ms_do_pageflip(ScreenPtr screen,
 
         if (!queue_flip_on_crtc(screen, crtc, flipdata,
                                 ref_crtc_vblank_pipe,
-                                flags, pageflip_handler,
-                                pageflip_abort)) {
+                                flags)) {
             goto error_undo;
         }
     }
diff --git a/hw/xfree86/drivers/modesetting/present.c b/hw/xfree86/drivers/modesetting/present.c
index 51f98fe..0a7e75a 100644
--- a/hw/xfree86/drivers/modesetting/present.c
+++ b/hw/xfree86/drivers/modesetting/present.c
@@ -192,60 +192,20 @@ ms_present_flush(WindowPtr window)
 #ifdef GLAMOR
 
 /**
- * Free an ms_crtc_pageflip.
+ * Callback for the DRM event queue when a flip has completed on all pipes
  *
- * Drops the reference count on the flipdata.
- */
-static void
-ms_present_flip_free(struct ms_crtc_pageflip *flip)
-{
-    struct ms_flipdata *flipdata = flip->flipdata;
-
-    free(flip);
-    if (--flipdata->flip_count > 0)
-        return;
-    free(flipdata);
-}
-
-/**
- * Callback for the DRM event queue when a single flip has completed
- *
- * Once the flip has been completed on all pipes, notify the
- * extension code telling it when that happened
+ * Notify the extension code
  */
 static void
 ms_present_flip_handler(uint64_t msc, uint64_t ust, void *data)
 {
-    struct ms_crtc_pageflip *flip = data;
-    ScreenPtr screen = flip->flipdata->screen;
-    ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
-    modesettingPtr ms = modesettingPTR(scrn);
-    struct ms_flipdata *flipdata = flip->flipdata;
+    struct ms_present_vblank_event *event = data;
 
-    DebugPresent(("\t\tms:fh %lld c %d msc %llu ust %llu\n",
-                  (long long) flipdata->event->event_id,
-                  flipdata->flip_count,
+    DebugPresent(("\t\tms:fc %lld msc %llu ust %llu\n",
+                  (long long) event->event_id,
                   (long long) msc, (long long) ust));
 
-    if (flip->on_reference_crtc) {
-        flipdata->fe_msc = msc;
-        flipdata->fe_usec = ust;
-    }
-
-    if (flipdata->flip_count == 1) {
-        DebugPresent(("\t\tms:fc %lld c %d msc %llu ust %llu\n",
-                      (long long) flipdata->event->event_id,
-                      flipdata->flip_count,
-                      (long long) flipdata->fe_msc, (long long) flipdata->fe_usec));
-
-
-        ms_present_vblank_handler(flipdata->fe_msc,
-                                  flipdata->fe_usec,
-                                  flipdata->event);
-
-        drmModeRmFB(ms->fd, flipdata->old_fb_id);
-    }
-    ms_present_flip_free(flip);
+    ms_present_vblank_handler(msc, ust, event);
 }
 
 /*
@@ -254,15 +214,11 @@ ms_present_flip_handler(uint64_t msc, uint64_t ust, void *data)
 static void
 ms_present_flip_abort(void *data)
 {
-    struct ms_crtc_pageflip *flip = data;
-    struct ms_flipdata *flipdata = flip->flipdata;
-
-    DebugPresent(("\t\tms:fa %lld c %d\n", (long long) flipdata->event->event_id, flipdata->flip_count));
+    struct ms_present_vblank_event *event = data;
 
-    if (flipdata->flip_count == 1)
-        free(flipdata->event);
+    DebugPresent(("\t\tms:fa %lld\n", (long long) event->event_id));
 
-    ms_present_flip_free(flip);
+    free(event);
 }
 
 /*
commit 4f1eb7864b61d0c992c5eff3339085e887792048
Author: Qiang Yu <Qiang.Yu at amd.com>
Date:   Mon Aug 22 18:14:16 2016 +0800

    modesetting: move ms_do_pageflip to pageflip.c
    
    Signed-off-by: Qiang Yu <Qiang.Yu at amd.com>
    Reviewed-by: Michel Dänzer <michel.daenzer at amd.com>

diff --git a/hw/xfree86/drivers/modesetting/Makefile.am b/hw/xfree86/drivers/modesetting/Makefile.am
index ca7e05a..44823b0 100644
--- a/hw/xfree86/drivers/modesetting/Makefile.am
+++ b/hw/xfree86/drivers/modesetting/Makefile.am
@@ -54,6 +54,7 @@ modesetting_drv_la_SOURCES = \
 	 sh3224.c \
 	 sh3224.h \
 	 vblank.c \
+	 pageflip.c \
 	 $(NULL)
 
 drivermandir = $(DRIVER_MAN_DIR)
diff --git a/hw/xfree86/drivers/modesetting/driver.h b/hw/xfree86/drivers/modesetting/driver.h
index 498b9bf..c0d80a8 100644
--- a/hw/xfree86/drivers/modesetting/driver.h
+++ b/hw/xfree86/drivers/modesetting/driver.h
@@ -153,3 +153,51 @@ Bool ms_vblank_screen_init(ScreenPtr screen);
 void ms_vblank_close_screen(ScreenPtr screen);
 
 Bool ms_present_screen_init(ScreenPtr screen);
+
+#ifdef GLAMOR
+
+/*
+ * Event data for an in progress flip.
+ * This contains a pointer to the vblank event,
+ * and information about the flip in progress.
+ * a reference to this is stored in the per-crtc
+ * flips.
+ */
+struct ms_flipdata {
+    ScreenPtr screen;
+    void *event;
+    /* number of CRTC events referencing this */
+    int flip_count;
+    uint64_t fe_msc;
+    uint64_t fe_usec;
+    uint32_t old_fb_id;
+};
+
+/*
+ * Per crtc pageflipping infomation,
+ * These are submitted to the queuing code
+ * one of them per crtc per flip.
+ */
+struct ms_crtc_pageflip {
+    Bool on_reference_crtc;
+    /* reference to the ms_flipdata */
+    struct ms_flipdata *flipdata;
+};
+
+typedef void (*ms_pageflip_handler_proc)(uint64_t frame,
+                                         uint64_t usec,
+                                         void *data);
+
+typedef void (*ms_pageflip_abort_proc)(void *data);
+
+int ms_flush_drm_events(ScreenPtr screen);
+
+Bool ms_do_pageflip(ScreenPtr screen,
+                    PixmapPtr new_front,
+                    void *event,
+                    int ref_crtc_vblank_pipe,
+                    Bool async,
+                    ms_pageflip_handler_proc pageflip_handler,
+                    ms_pageflip_abort_proc pageflip_abort);
+
+#endif
diff --git a/hw/xfree86/drivers/modesetting/pageflip.c b/hw/xfree86/drivers/modesetting/pageflip.c
new file mode 100644
index 0000000..4549792
--- /dev/null
+++ b/hw/xfree86/drivers/modesetting/pageflip.c
@@ -0,0 +1,251 @@
+/*
+ * Copyright © 2014 Intel Corporation
+ *
+ * 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_DIX_CONFIG_H
+#include "dix-config.h"
+#endif
+
+#include <xserver_poll.h>
+#include <xf86drm.h>
+
+#include "driver.h"
+
+#ifdef GLAMOR
+
+/*
+ * Flush the DRM event queue when full; makes space for new events.
+ *
+ * Returns a negative value on error, 0 if there was nothing to process,
+ * or 1 if we handled any events.
+ */
+int
+ms_flush_drm_events(ScreenPtr screen)
+{
+    ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
+    modesettingPtr ms = modesettingPTR(scrn);
+
+    struct pollfd p = { .fd = ms->fd, .events = POLLIN };
+    int r;
+
+    do {
+            r = xserver_poll(&p, 1, 0);
+    } while (r == -1 && (errno == EINTR || errno == EAGAIN));
+
+    /* If there was an error, r will be < 0.  Return that.  If there was
+     * nothing to process, r == 0.  Return that.
+     */
+    if (r <= 0)
+        return r;
+
+    /* Try to handle the event.  If there was an error, return it. */
+    r = drmHandleEvent(ms->fd, &ms->event_context);
+    if (r < 0)
+        return r;
+
+    /* Otherwise return 1 to indicate that we handled an event. */
+    return 1;
+}
+
+static Bool
+queue_flip_on_crtc(ScreenPtr screen, xf86CrtcPtr crtc,
+                   struct ms_flipdata *flipdata,
+                   int ref_crtc_vblank_pipe, uint32_t flags,
+                   ms_pageflip_handler_proc pageflip_handler,
+                   ms_pageflip_abort_proc pageflip_abort)
+{
+    ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
+    modesettingPtr ms = modesettingPTR(scrn);
+    drmmode_crtc_private_ptr drmmode_crtc = crtc->driver_private;
+    struct ms_crtc_pageflip *flip;
+    uint32_t seq;
+    int err;
+
+    flip = calloc(1, sizeof(struct ms_crtc_pageflip));
+    if (flip == NULL) {
+        xf86DrvMsg(scrn->scrnIndex, X_WARNING,
+                   "flip queue: carrier alloc failed.\n");
+        return FALSE;
+    }
+
+    /* Only the reference crtc will finally deliver its page flip
+     * completion event. All other crtc's events will be discarded.
+     */
+    flip->on_reference_crtc = (drmmode_crtc->vblank_pipe == ref_crtc_vblank_pipe);
+    flip->flipdata = flipdata;
+
+    seq = ms_drm_queue_alloc(crtc, flip, pageflip_handler, pageflip_abort);
+    if (!seq) {
+        free(flip);
+        return FALSE;
+    }
+
+    /* take a reference on flipdata for use in flip */
+    flipdata->flip_count++;
+
+    while (drmModePageFlip(ms->fd, drmmode_crtc->mode_crtc->crtc_id,
+                           ms->drmmode.fb_id, flags, (void *) (uintptr_t) seq)) {
+        err = errno;
+        /* We may have failed because the event queue was full.  Flush it
+         * and retry.  If there was nothing to flush, then we failed for
+         * some other reason and should just return an error.
+         */
+        if (ms_flush_drm_events(screen) <= 0) {
+            xf86DrvMsg(scrn->scrnIndex, X_WARNING,
+                       "flip queue failed: %s\n", strerror(err));
+            /* Aborting will also decrement flip_count and free(flip). */
+            ms_drm_abort_seq(scrn, seq);
+            return FALSE;
+        }
+
+        /* We flushed some events, so try again. */
+        xf86DrvMsg(scrn->scrnIndex, X_WARNING, "flip queue retry\n");
+    }
+
+    /* The page flip succeded. */
+    return TRUE;
+}
+
+
+Bool
+ms_do_pageflip(ScreenPtr screen,
+               PixmapPtr new_front,
+               void *event,
+               int ref_crtc_vblank_pipe,
+               Bool async,
+               ms_pageflip_handler_proc pageflip_handler,
+               ms_pageflip_abort_proc pageflip_abort)
+{
+#ifndef GLAMOR_HAS_GBM
+    return FALSE;
+#else
+    ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
+    modesettingPtr ms = modesettingPTR(scrn);
+    xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(scrn);
+    drmmode_bo new_front_bo;
+    uint32_t flags;
+    int i;
+    struct ms_flipdata *flipdata;
+    glamor_block_handler(screen);
+
+    new_front_bo.gbm = glamor_gbm_bo_from_pixmap(screen, new_front);
+    new_front_bo.dumb = NULL;
+    if (!new_front_bo.gbm) {
+        xf86DrvMsg(scrn->scrnIndex, X_ERROR,
+                   "Failed to get GBM bo for flip to new front.\n");
+        return FALSE;
+    }
+
+    flipdata = calloc(1, sizeof(struct ms_flipdata));
+    if (!flipdata) {
+        drmmode_bo_destroy(&ms->drmmode, &new_front_bo);
+        xf86DrvMsg(scrn->scrnIndex, X_ERROR,
+                   "Failed to allocate flipdata.\n");
+        return FALSE;
+    }
+
+    flipdata->event = event;
+    flipdata->screen = screen;
+
+    /*
+     * Take a local reference on flipdata.
+     * if the first flip fails, the sequence abort
+     * code will free the crtc flip data, and drop
+     * it's reference which would cause this to be
+     * freed when we still required it.
+     */
+    flipdata->flip_count++;
+
+    /* Create a new handle for the back buffer */
+    flipdata->old_fb_id = ms->drmmode.fb_id;
+    if (drmModeAddFB(ms->fd, scrn->virtualX, scrn->virtualY,
+                     scrn->depth, scrn->bitsPerPixel,
+                     drmmode_bo_get_pitch(&new_front_bo),
+                     drmmode_bo_get_handle(&new_front_bo), &ms->drmmode.fb_id)) {
+        goto error_out;
+    }
+
+    drmmode_bo_destroy(&ms->drmmode, &new_front_bo);
+
+    flags = DRM_MODE_PAGE_FLIP_EVENT;
+    if (async)
+        flags |= DRM_MODE_PAGE_FLIP_ASYNC;
+
+    /* Queue flips on all enabled CRTCs.
+     *
+     * Note that if/when we get per-CRTC buffers, we'll have to update this.
+     * Right now it assumes a single shared fb across all CRTCs, with the
+     * kernel fixing up the offset of each CRTC as necessary.
+     *
+     * Also, flips queued on disabled or incorrectly configured displays
+     * may never complete; this is a configuration error.
+     */
+    for (i = 0; i < config->num_crtc; i++) {
+        xf86CrtcPtr crtc = config->crtc[i];
+
+        if (!ms_crtc_on(crtc))
+            continue;
+
+        if (!queue_flip_on_crtc(screen, crtc, flipdata,
+                                ref_crtc_vblank_pipe,
+                                flags, pageflip_handler,
+                                pageflip_abort)) {
+            goto error_undo;
+        }
+    }
+
+    /*
+     * Do we have more than our local reference,
+     * if so and no errors, then drop our local
+     * reference and return now.
+     */
+    if (flipdata->flip_count > 1) {
+        flipdata->flip_count--;
+        return TRUE;
+    }
+
+error_undo:
+
+    /*
+     * Have we just got the local reference?
+     * free the framebuffer if so since nobody successfully
+     * submitted anything
+     */
+    if (flipdata->flip_count == 1) {
+        drmModeRmFB(ms->fd, ms->drmmode.fb_id);
+        ms->drmmode.fb_id = flipdata->old_fb_id;
+    }
+
+error_out:
+    xf86DrvMsg(scrn->scrnIndex, X_WARNING, "Page flip failed: %s\n",
+               strerror(errno));
+    /* if only the local reference - free the structure,
+     * else drop the local reference and return */
+    if (flipdata->flip_count == 1)
+        free(flipdata);
+    else
+        flipdata->flip_count--;
+
+    return FALSE;
+#endif /* GLAMOR_HAS_GBM */
+}
+
+#endif
diff --git a/hw/xfree86/drivers/modesetting/present.c b/hw/xfree86/drivers/modesetting/present.c
index 8b60c07..51f98fe 100644
--- a/hw/xfree86/drivers/modesetting/present.c
+++ b/hw/xfree86/drivers/modesetting/present.c
@@ -27,7 +27,6 @@
 #include <assert.h>
 #include <errno.h>
 #include <fcntl.h>
-#include <xserver_poll.h>
 #include <unistd.h>
 #include <stdio.h>
 #include <stdint.h>
@@ -72,40 +71,6 @@ ms_present_get_ust_msc(RRCrtcPtr crtc, CARD64 *ust, CARD64 *msc)
 }
 
 /*
- * Flush the DRM event queue when full; makes space for new events.
- *
- * Returns a negative value on error, 0 if there was nothing to process,
- * or 1 if we handled any events.
- */
-static int
-ms_flush_drm_events(ScreenPtr screen)
-{
-    ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
-    modesettingPtr ms = modesettingPTR(scrn);
-
-    struct pollfd p = { .fd = ms->fd, .events = POLLIN };
-    int r;
-
-    do {
-            r = xserver_poll(&p, 1, 0);
-    } while (r == -1 && (errno == EINTR || errno == EAGAIN));
-
-    /* If there was an error, r will be < 0.  Return that.  If there was
-     * nothing to process, r == 0.  Return that.
-     */
-    if (r <= 0)
-        return r;
-
-    /* Try to handle the event.  If there was an error, return it. */
-    r = drmHandleEvent(ms->fd, &ms->event_context);
-    if (r < 0)
-        return r;
-
-    /* Otherwise return 1 to indicate that we handled an event. */
-    return 1;
-}
-
-/*
  * Called when the queued vblank event has occurred
  */
 static void
@@ -226,40 +191,6 @@ ms_present_flush(WindowPtr window)
 
 #ifdef GLAMOR
 
-/*
- * Event data for an in progress flip.
- * This contains a pointer to the vblank event,
- * and information about the flip in progress.
- * a reference to this is stored in the per-crtc
- * flips.
- */
-struct ms_flipdata {
-    ScreenPtr screen;
-    void *event;
-    /* number of CRTC events referencing this */
-    int flip_count;
-    uint64_t fe_msc;
-    uint64_t fe_usec;
-    uint32_t old_fb_id;
-};
-
-/*
- * Per crtc pageflipping infomation,
- * These are submitted to the queuing code
- * one of them per crtc per flip.
- */
-struct ms_crtc_pageflip {
-    Bool on_reference_crtc;
-    /* reference to the ms_flipdata */
-    struct ms_flipdata *flipdata;
-};
-
-typedef void (*ms_pageflip_handler_proc)(uint64_t frame,
-                                         uint64_t usec,
-                                         void *data);
-
-typedef void (*ms_pageflip_abort_proc)(void *data);
-
 /**
  * Free an ms_crtc_pageflip.
  *
@@ -334,189 +265,6 @@ ms_present_flip_abort(void *data)
     ms_present_flip_free(flip);
 }
 
-static Bool
-queue_flip_on_crtc(ScreenPtr screen, xf86CrtcPtr crtc,
-                   struct ms_flipdata *flipdata,
-                   int ref_crtc_vblank_pipe, uint32_t flags,
-                   ms_pageflip_handler_proc pageflip_handler,
-                   ms_pageflip_abort_proc pageflip_abort)
-{
-    ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
-    modesettingPtr ms = modesettingPTR(scrn);
-    drmmode_crtc_private_ptr drmmode_crtc = crtc->driver_private;
-    struct ms_crtc_pageflip *flip;
-    uint32_t seq;
-    int err;
-
-    flip = calloc(1, sizeof(struct ms_crtc_pageflip));
-    if (flip == NULL) {
-        xf86DrvMsg(scrn->scrnIndex, X_WARNING,
-                   "flip queue: carrier alloc failed.\n");
-        return FALSE;
-    }
-
-    /* Only the reference crtc will finally deliver its page flip
-     * completion event. All other crtc's events will be discarded.
-     */
-    flip->on_reference_crtc = (drmmode_crtc->vblank_pipe == ref_crtc_vblank_pipe);
-    flip->flipdata = flipdata;
-
-    seq = ms_drm_queue_alloc(crtc, flip, pageflip_handler, pageflip_abort);
-    if (!seq) {
-        free(flip);
-        return FALSE;
-    }
-
-    /* take a reference on flipdata for use in flip */
-    flipdata->flip_count++;
-
-    while (drmModePageFlip(ms->fd, drmmode_crtc->mode_crtc->crtc_id,
-                           ms->drmmode.fb_id, flags, (void *) (uintptr_t) seq)) {
-        err = errno;
-        /* We may have failed because the event queue was full.  Flush it
-         * and retry.  If there was nothing to flush, then we failed for
-         * some other reason and should just return an error.
-         */
-        if (ms_flush_drm_events(screen) <= 0) {
-            xf86DrvMsg(scrn->scrnIndex, X_WARNING,
-                       "flip queue failed: %s\n", strerror(err));
-            /* Aborting will also decrement flip_count and free(flip). */
-            ms_drm_abort_seq(scrn, seq);
-            return FALSE;
-        }
-
-        /* We flushed some events, so try again. */
-        xf86DrvMsg(scrn->scrnIndex, X_WARNING, "flip queue retry\n");
-    }
-
-    /* The page flip succeded. */
-    return TRUE;
-}
-
-
-static Bool
-ms_do_pageflip(ScreenPtr screen,
-               PixmapPtr new_front,
-               void *event,
-               int ref_crtc_vblank_pipe,
-               Bool async,
-               ms_pageflip_handler_proc pageflip_handler,
-               ms_pageflip_abort_proc pageflip_abort)
-{
-#ifndef GLAMOR_HAS_GBM
-    return FALSE;
-#else
-    ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
-    modesettingPtr ms = modesettingPTR(scrn);
-    xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(scrn);
-    drmmode_bo new_front_bo;
-    uint32_t flags;
-    int i;
-    struct ms_flipdata *flipdata;
-    glamor_block_handler(screen);
-
-    new_front_bo.gbm = glamor_gbm_bo_from_pixmap(screen, new_front);
-    new_front_bo.dumb = NULL;
-    if (!new_front_bo.gbm) {
-        xf86DrvMsg(scrn->scrnIndex, X_ERROR,
-                   "Failed to get GBM bo for flip to new front.\n");
-        return FALSE;
-    }
-
-    flipdata = calloc(1, sizeof(struct ms_flipdata));
-    if (!flipdata) {
-        drmmode_bo_destroy(&ms->drmmode, &new_front_bo);
-        xf86DrvMsg(scrn->scrnIndex, X_ERROR,
-                   "Failed to allocate flipdata.\n");
-        return FALSE;
-    }
-
-    flipdata->event = event;
-    flipdata->screen = screen;
-
-    /*
-     * Take a local reference on flipdata.
-     * if the first flip fails, the sequence abort
-     * code will free the crtc flip data, and drop
-     * it's reference which would cause this to be
-     * freed when we still required it.
-     */
-    flipdata->flip_count++;
-
-    /* Create a new handle for the back buffer */
-    flipdata->old_fb_id = ms->drmmode.fb_id;
-    if (drmModeAddFB(ms->fd, scrn->virtualX, scrn->virtualY,
-                     scrn->depth, scrn->bitsPerPixel,
-                     drmmode_bo_get_pitch(&new_front_bo),
-                     drmmode_bo_get_handle(&new_front_bo), &ms->drmmode.fb_id)) {
-        goto error_out;
-    }
-
-    drmmode_bo_destroy(&ms->drmmode, &new_front_bo);
-
-    flags = DRM_MODE_PAGE_FLIP_EVENT;
-    if (async)
-        flags |= DRM_MODE_PAGE_FLIP_ASYNC;
-
-    /* Queue flips on all enabled CRTCs.
-     *
-     * Note that if/when we get per-CRTC buffers, we'll have to update this.
-     * Right now it assumes a single shared fb across all CRTCs, with the
-     * kernel fixing up the offset of each CRTC as necessary.
-     *
-     * Also, flips queued on disabled or incorrectly configured displays
-     * may never complete; this is a configuration error.
-     */
-    for (i = 0; i < config->num_crtc; i++) {
-        xf86CrtcPtr crtc = config->crtc[i];
-
-        if (!ms_crtc_on(crtc))
-            continue;
-
-        if (!queue_flip_on_crtc(screen, crtc, flipdata,
-                                ref_crtc_vblank_pipe,
-                                flags, pageflip_handler,
-                                pageflip_abort)) {
-            goto error_undo;
-        }
-    }
-
-    /*
-     * Do we have more than our local reference,
-     * if so and no errors, then drop our local
-     * reference and return now.
-     */
-    if (flipdata->flip_count > 1) {
-        flipdata->flip_count--;
-        return TRUE;
-    }
-
-error_undo:
-
-    /*
-     * Have we just got the local reference?
-     * free the framebuffer if so since nobody successfully
-     * submitted anything
-     */
-    if (flipdata->flip_count == 1) {
-        drmModeRmFB(ms->fd, ms->drmmode.fb_id);
-        ms->drmmode.fb_id = flipdata->old_fb_id;
-    }
-
-error_out:
-    xf86DrvMsg(scrn->scrnIndex, X_WARNING, "Page flip failed: %s\n",
-               strerror(errno));
-    /* if only the local reference - free the structure,
-     * else drop the local reference and return */
-    if (flipdata->flip_count == 1)
-        free(flipdata);
-    else
-        flipdata->flip_count--;
-
-    return FALSE;
-#endif /* GLAMOR_HAS_GBM */
-}
-
 /*
  * Test to see if page flipping is possible on the target crtc
  */
commit a586bf9ccf60b2cc66953555e82eeb6a8e0b4ca9
Author: Qiang Yu <Qiang.Yu at amd.com>
Date:   Mon Aug 22 18:14:15 2016 +0800

    modesetting: make ms_do_pageflip generic for share with DRI2
    
    Signed-off-by: Qiang Yu <Qiang.Yu at amd.com>
    Reviewed-by: Michel Dänzer <michel.daenzer at amd.com>

diff --git a/hw/xfree86/drivers/modesetting/present.c b/hw/xfree86/drivers/modesetting/present.c
index 0093fb5..8b60c07 100644
--- a/hw/xfree86/drivers/modesetting/present.c
+++ b/hw/xfree86/drivers/modesetting/present.c
@@ -235,7 +235,7 @@ ms_present_flush(WindowPtr window)
  */
 struct ms_flipdata {
     ScreenPtr screen;
-    struct ms_present_vblank_event *event;
+    void *event;
     /* number of CRTC events referencing this */
     int flip_count;
     uint64_t fe_msc;
@@ -254,6 +254,12 @@ struct ms_crtc_pageflip {
     struct ms_flipdata *flipdata;
 };
 
+typedef void (*ms_pageflip_handler_proc)(uint64_t frame,
+                                         uint64_t usec,
+                                         void *data);
+
+typedef void (*ms_pageflip_abort_proc)(void *data);
+
 /**
  * Free an ms_crtc_pageflip.
  *
@@ -277,7 +283,7 @@ ms_present_flip_free(struct ms_crtc_pageflip *flip)
  * extension code telling it when that happened
  */
 static void
-ms_flip_handler(uint64_t msc, uint64_t ust, void *data)
+ms_present_flip_handler(uint64_t msc, uint64_t ust, void *data)
 {
     struct ms_crtc_pageflip *flip = data;
     ScreenPtr screen = flip->flipdata->screen;
@@ -331,7 +337,9 @@ ms_present_flip_abort(void *data)
 static Bool
 queue_flip_on_crtc(ScreenPtr screen, xf86CrtcPtr crtc,
                    struct ms_flipdata *flipdata,
-                   int ref_crtc_vblank_pipe, uint32_t flags)
+                   int ref_crtc_vblank_pipe, uint32_t flags,
+                   ms_pageflip_handler_proc pageflip_handler,
+                   ms_pageflip_abort_proc pageflip_abort)
 {
     ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
     modesettingPtr ms = modesettingPTR(scrn);
@@ -353,17 +361,12 @@ queue_flip_on_crtc(ScreenPtr screen, xf86CrtcPtr crtc,
     flip->on_reference_crtc = (drmmode_crtc->vblank_pipe == ref_crtc_vblank_pipe);
     flip->flipdata = flipdata;
 
-    seq = ms_drm_queue_alloc(crtc, flip, ms_flip_handler, ms_present_flip_abort);
+    seq = ms_drm_queue_alloc(crtc, flip, pageflip_handler, pageflip_abort);
     if (!seq) {
         free(flip);
         return FALSE;
     }
 
-    DebugPresent(("\t\tms:fq %lld c %d -> %d seq %llu\n",
-                  (long long) flipdata->event->event_id,
-                  flipdata->flip_count, flipdata->flip_count + 1,
-                  (long long) seq));
-
     /* take a reference on flipdata for use in flip */
     flipdata->flip_count++;
 
@@ -394,9 +397,11 @@ queue_flip_on_crtc(ScreenPtr screen, xf86CrtcPtr crtc,
 static Bool
 ms_do_pageflip(ScreenPtr screen,
                PixmapPtr new_front,
-               struct ms_present_vblank_event *event,
+               void *event,
                int ref_crtc_vblank_pipe,
-               Bool async)
+               Bool async,
+               ms_pageflip_handler_proc pageflip_handler,
+               ms_pageflip_abort_proc pageflip_abort)
 {
 #ifndef GLAMOR_HAS_GBM
     return FALSE;
@@ -470,7 +475,8 @@ ms_do_pageflip(ScreenPtr screen,
 
         if (!queue_flip_on_crtc(screen, crtc, flipdata,
                                 ref_crtc_vblank_pipe,
-                                flags)) {
+                                flags, pageflip_handler,
+                                pageflip_abort)) {
             goto error_undo;
         }
     }
@@ -588,8 +594,12 @@ ms_present_flip(RRCrtcPtr crtc,
     if (!event)
         return FALSE;
 
+    DebugPresent(("\t\tms:pf %lld msc %llu\n",
+                  (long long) event_id, (long long) target_msc));
+
     event->event_id = event_id;
-    ret = ms_do_pageflip(screen, pixmap, event, drmmode_crtc->vblank_pipe, !sync_flip);
+    ret = ms_do_pageflip(screen, pixmap, event, drmmode_crtc->vblank_pipe, !sync_flip,
+                         ms_present_flip_handler, ms_present_flip_abort);
     if (!ret)
         xf86DrvMsg(scrn->scrnIndex, X_ERROR, "present flip failed\n");
 
@@ -615,7 +625,8 @@ ms_present_unflip(ScreenPtr screen, uint64_t event_id)
     event->event_id = event_id;
 
     if (ms_present_check_flip(NULL, screen->root, pixmap, TRUE) &&
-        ms_do_pageflip(screen, pixmap, event, -1, FALSE)) {
+        ms_do_pageflip(screen, pixmap, event, -1, FALSE,
+                       ms_present_flip_handler, ms_present_flip_abort)) {
         return;
     }
 


More information about the xorg-commit mailing list