void
vivante_dri2_vblank(int fd, unsigned frame, unsigned tv_sec, unsigned tv_usec,
void *event)
{
struct vivante_dri_wait *wait = event;
DrawablePtr draw;
if (!wait->drawable_id)
goto out;
if (dixLookupDrawable(&draw, wait->drawable_id, serverClient, M_ANY,
DixWriteAccess) != Success)
goto out;
switch (wait->type) {
case DRI2_FLIP:
if (can_exchange(draw, wait->front, wait->back) &&
vivante_dri2_ScheduleFlip(draw, wait))
return;
/* FALLTHROUGH */
case DRI2_SWAP:
vivante_dri2_blit(wait->client, draw, wait->front, wait->back,
frame, tv_sec, tv_usec,
wait->client ? wait->event_func : NULL,
wait->event_data);
break;
case DRI2_WAITMSC:
if (wait->client)
DRI2WaitMSCComplete(wait->client, draw, frame, tv_sec, tv_usec);
break;
default:
xf86DrvMsg(xf86ScreenToScrn(draw->pScreen)->scrnIndex,
X_WARNING, "%s: unknown vblank event received\n",
__FUNCTION__);
break;
}
out:
del_wait_info(wait);
}
static void
nouveau_dri2_vblank_handler(void *priv, uint64_t name, uint64_t ust, uint32_t frame)
{
struct dri2_vblank *event = priv;
struct nouveau_dri2_vblank_state *s = event->s;
uint32_t tv_sec = ust / 1000000;
uint32_t tv_usec = ust % 1000000;
DrawablePtr draw;
int ret;
ret = dixLookupDrawable(&draw, s->draw, serverClient,
M_ANY, DixWriteAccess);
if (ret) {
free(s);
return;
}
switch (s->action) {
case SWAP:
nouveau_dri2_finish_swap(draw, frame, tv_sec, tv_usec, s);
#if DRI2INFOREC_VERSION >= 6
/* Restore real swap limit on drawable, now that it is safe. */
ScrnInfoPtr scrn = xf86ScreenToScrn(draw->pScreen);
DRI2SwapLimit(draw, NVPTR(scrn)->swap_limit);
#endif
break;
case WAIT:
DRI2WaitMSCComplete(s->client, draw, frame, tv_sec, tv_usec);
free(s);
break;
case BLIT:
DRI2SwapComplete(s->client, draw, frame, tv_sec, tv_usec,
DRI2_BLIT_COMPLETE, s->func, s->data);
free(s);
break;
}
}
static int
vivante_dri2_ScheduleWaitMSC(ClientPtr client, DrawablePtr draw,
CARD64 target_msc, CARD64 divisor, CARD64 remainder)
{
struct vivante *vivante = vivante_get_screen_priv(draw->pScreen);
struct vivante_dri_wait *wait;
drmVBlank vbl;
int ret, crtc;
CARD64 cur_msc;
target_msc &= 0xffffffff;
divisor &= 0xffffffff;
remainder &= 0xffffffff;
crtc = vivante_dri2_drawable_crtc(draw);
/* Drawable not displayed, just complete */
if (crtc < 0)
goto out;
wait = new_wait_info(client, draw, DRI2_WAITMSC);
if (!wait)
goto out;
/* Get current count */
ret = vivante_dri2_waitvblank(vivante, &vbl, crtc, __FUNCTION__);
if (ret)
goto out_free;
cur_msc = vbl.reply.sequence;
/*
* If the divisor is zero, or cur_msc is smaller than target_msc, we
* just need to make sure target_msc passes before waking up the client.
*/
if (divisor == 0 || cur_msc < target_msc) {
if (cur_msc >= target_msc)
target_msc = cur_msc;
vbl.request.sequence = target_msc;
} else {
/*
* If we get here, target_msc has already passed or we
* don't have one, so queue an event that will satisfy
* the divisor/remainder equation.
*/
vbl.request.sequence = cur_msc - (cur_msc % divisor) + remainder;
/*
* If calculated remainder is larger than requested
* remainder, it means we've passed the point where
* seq % divisor == remainder, so we need to wait for
* the next time that will happen.
*/
if ((cur_msc & divisor) >= remainder)
vbl.request.sequence += divisor;
}
vbl.request.type = DRM_VBLANK_ABSOLUTE | DRM_VBLANK_EVENT | drm_req_crtc(crtc);
vbl.request.signal = (unsigned long)wait;
ret = drmWaitVBlank(vivante->drm_fd, &vbl);
if (ret) {
xf86DrvMsg(vivante->scrnIndex, X_WARNING,
"%s: get vblank counter failed: %s\n",
__FUNCTION__, strerror(errno));
goto out_free;
}
wait->frame = vbl.reply.sequence;
DRI2BlockClient(client, draw);
return TRUE;
out_free:
del_wait_info(wait);
out:
DRI2WaitMSCComplete(client, draw, target_msc, 0, 0);
return TRUE;
}