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Only update drmmode_crtc->flip_pending after actually submitting a flip

Browse Source 
And only clear it if it matches the framebuffer of the completed flip
being processed.

Fixes

 (WW) RADEON(0): flip queue failed: Device or resource busy
 (WW) RADEON(0): Page flip failed: Device or resource busy
 (EE) RADEON(0): present flip failed

due to clobbering drmmode_crtc->flip_pending.

Reproducer: Enable TearFree, run warzone2100 fullscreen, toggle
Vertical sync on/off under Video Options. Discovered while investigating
https://bugs.freedesktop.org/109364 .

(Ported from amdgpu commit e72a02ba1d35743fefd939458b9d8cddce86e7f5)
This commit is contained in:
Michel Dänzer
2019-01-28 18:11:10 +01:00
parent dcd3527299
commit 1bfdccf763
2 changed files with 43 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
src/drmmode_display.c
View File

@@ -2651,12 +2651,14 @@ drmmode_flip_handler(xf86CrtcPtr crtc, uint32_t frame, uint64_t usec, void *even
flipdata->fe_usec = usec;
}
if (drmmode_crtc->flip_pending == *fb) {
drmmode_fb_reference(pRADEONEnt->fd,
&drmmode_crtc->flip_pending, NULL);
if (*fb) {
if (drmmode_crtc->flip_pending == *fb) {
drmmode_fb_reference(pRADEONEnt->fd,
&drmmode_crtc->flip_pending, NULL);
}
drmmode_fb_reference(pRADEONEnt->fd, &drmmode_crtc->fb, *fb);
drmmode_fb_reference(pRADEONEnt->fd, fb, NULL);
}
drmmode_fb_reference(pRADEONEnt->fd, &drmmode_crtc->fb, *fb);
drmmode_fb_reference(pRADEONEnt->fd, fb, NULL);
if (--flipdata->flip_count == 0) {
/* Deliver MSC & UST from reference/current CRTC to flip event
@@ -3492,9 +3494,10 @@ Bool radeon_do_pageflip(ScrnInfoPtr scrn, ClientPtr client,
drmmode_crtc->ignore_damage = TRUE;
}
next:
drmmode_fb_reference(pRADEONEnt->fd, &drmmode_crtc->flip_pending,
flipdata->fb[crtc_id]);
next:
drm_queue_seq = 0;
}

66
src/radeon_kms.c
View File

@@ -526,10 +526,14 @@ radeon_scanout_flip_abort(xf86CrtcPtr crtc, void *event_data)
{
RADEONEntPtr pRADEONEnt = RADEONEntPriv(crtc->scrn);
drmmode_crtc_private_ptr drmmode_crtc = crtc->driver_private;
struct drmmode_fb *fb = event_data;
drmmode_crtc->scanout_update_pending = 0;
drmmode_fb_reference(pRADEONEnt->fd, &drmmode_crtc->flip_pending,
NULL);
if (drmmode_crtc->flip_pending == fb) {
drmmode_fb_reference(pRADEONEnt->fd, &drmmode_crtc->flip_pending,
NULL);
}
}
static void
@@ -538,9 +542,9 @@ radeon_scanout_flip_handler(xf86CrtcPtr crtc, uint32_t msc, uint64_t usec,
{
RADEONEntPtr pRADEONEnt = RADEONEntPriv(crtc->scrn);
drmmode_crtc_private_ptr drmmode_crtc = crtc->driver_private;
struct drmmode_fb *fb = event_data;
drmmode_fb_reference(pRADEONEnt->fd, &drmmode_crtc->fb,
drmmode_crtc->flip_pending);
drmmode_fb_reference(pRADEONEnt->fd, &drmmode_crtc->fb, fb);
radeon_scanout_flip_abort(crtc, event_data);
}
@@ -821,24 +825,31 @@ radeon_prime_scanout_flip(PixmapDirtyUpdatePtr ent)
drmmode_crtc_private_ptr drmmode_crtc;
uintptr_t drm_queue_seq;
unsigned scanout_id;
struct drmmode_fb *fb;
if (!crtc || !crtc->enabled)
return;
drmmode_crtc = crtc->driver_private;
scanout_id = drmmode_crtc->scanout_id ^ 1;
if (drmmode_crtc->scanout_update_pending ||
!drmmode_crtc->scanout[drmmode_crtc->scanout_id].pixmap ||
!drmmode_crtc->scanout[scanout_id].pixmap ||
drmmode_crtc->dpms_mode != DPMSModeOn)
return;
scanout_id = drmmode_crtc->scanout_id ^ 1;
if (!radeon_prime_scanout_do_update(crtc, scanout_id))
return;
fb = radeon_pixmap_get_fb(drmmode_crtc->scanout[scanout_id].pixmap);
if (!fb) {
xf86DrvMsg(scrn->scrnIndex, X_WARNING,
"Failed to get FB for PRIME flip.\n");
return;
}
drm_queue_seq = radeon_drm_queue_alloc(crtc,
RADEON_DRM_QUEUE_CLIENT_DEFAULT,
RADEON_DRM_QUEUE_ID_DEFAULT,
NULL,
RADEON_DRM_QUEUE_ID_DEFAULT, fb,
radeon_scanout_flip_handler,
radeon_scanout_flip_abort, TRUE);
if (drm_queue_seq == RADEON_DRM_QUEUE_ERROR) {
@@ -847,18 +858,9 @@ radeon_prime_scanout_flip(PixmapDirtyUpdatePtr ent)
return;
}
drmmode_fb_reference(pRADEONEnt->fd, &drmmode_crtc->flip_pending,
radeon_pixmap_get_fb(drmmode_crtc->scanout[scanout_id].pixmap));
if (!drmmode_crtc->flip_pending) {
xf86DrvMsg(scrn->scrnIndex, X_WARNING,
"Failed to get FB for PRIME flip.\n");
radeon_drm_abort_entry(drm_queue_seq);
return;
}
if (drmmode_page_flip_target_relative(pRADEONEnt, drmmode_crtc,
drmmode_crtc->flip_pending->handle,
0, drm_queue_seq, 1) != 0) {
fb->handle, 0, drm_queue_seq, 1)
!= 0) {
if (!(drmmode_crtc->scanout_status & DRMMODE_SCANOUT_FLIP_FAILED)) {
xf86DrvMsg(scrn->scrnIndex, X_WARNING,
"flip queue failed in %s: %s, TearFree inactive\n",
@@ -877,6 +879,7 @@ radeon_prime_scanout_flip(PixmapDirtyUpdatePtr ent)
drmmode_crtc->scanout_id = scanout_id;
drmmode_crtc->scanout_update_pending = drm_queue_seq;
drmmode_fb_reference(pRADEONEnt->fd, &drmmode_crtc->flip_pending, fb);
}
static void
@@ -1137,6 +1140,7 @@ radeon_scanout_flip(ScreenPtr pScreen, RADEONInfoPtr info,
RADEONEntPtr pRADEONEnt = RADEONEntPriv(scrn);
uintptr_t drm_queue_seq;
unsigned scanout_id;
struct drmmode_fb *fb;
if (drmmode_crtc->scanout_update_pending ||
drmmode_crtc->flip_pending ||
@@ -1152,10 +1156,16 @@ radeon_scanout_flip(ScreenPtr pScreen, RADEONInfoPtr info,
radeon_cs_flush_indirect(scrn);
RegionEmpty(region);
fb = radeon_pixmap_get_fb(drmmode_crtc->scanout[scanout_id].pixmap);
if (!fb) {
xf86DrvMsg(scrn->scrnIndex, X_WARNING,
"Failed to get FB for scanout flip.\n");
return;
}
drm_queue_seq = radeon_drm_queue_alloc(xf86_crtc,
RADEON_DRM_QUEUE_CLIENT_DEFAULT,
RADEON_DRM_QUEUE_ID_DEFAULT,
NULL,
RADEON_DRM_QUEUE_ID_DEFAULT, fb,
radeon_scanout_flip_handler,
radeon_scanout_flip_abort, TRUE);
if (drm_queue_seq == RADEON_DRM_QUEUE_ERROR) {
@@ -1164,18 +1174,9 @@ radeon_scanout_flip(ScreenPtr pScreen, RADEONInfoPtr info,
return;
}
drmmode_fb_reference(pRADEONEnt->fd, &drmmode_crtc->flip_pending,
radeon_pixmap_get_fb(drmmode_crtc->scanout[scanout_id].pixmap));
if (!drmmode_crtc->flip_pending) {
xf86DrvMsg(scrn->scrnIndex, X_WARNING,
"Failed to get FB for scanout flip.\n");
radeon_drm_abort_entry(drm_queue_seq);
return;
}
if (drmmode_page_flip_target_relative(pRADEONEnt, drmmode_crtc,
drmmode_crtc->flip_pending->handle,
0, drm_queue_seq, 1) != 0) {
fb->handle, 0, drm_queue_seq, 1)
!= 0) {
if (!(drmmode_crtc->scanout_status & DRMMODE_SCANOUT_FLIP_FAILED)) {
xf86DrvMsg(scrn->scrnIndex, X_WARNING,
"flip queue failed in %s: %s, TearFree inactive\n",
@@ -1201,6 +1202,7 @@ radeon_scanout_flip(ScreenPtr pScreen, RADEONInfoPtr info,
drmmode_crtc->scanout_id = scanout_id;
drmmode_crtc->scanout_update_pending = drm_queue_seq;
drmmode_fb_reference(pRADEONEnt->fd, &drmmode_crtc->flip_pending, fb);
}
static void RADEONBlockHandler_KMS(BLOCKHANDLER_ARGS_DECL)