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snb,ivb: Workaround unknown blitter death 

The first workaround was a performance killing MI_FLUSH_DW after every
op. This workaround appears to be a stable compromise instead, only
requiring a redundant command after every BLT command with little
impact on throughput.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=27892
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=39524
Tested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2011-10-16 21:40:15 +01:00
parent 71bf291e56
commit 46f97127c2
1 changed files with 14 additions and 11 deletions
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25
src/intel_uxa.c
View File

@ -340,13 +340,6 @@ static void intel_uxa_solid(PixmapPtr pixmap, int x1, int y1, int x2, int y2)
}
}
static void intel_uxa_done_solid(PixmapPtr pixmap)
{
ScrnInfoPtr scrn = xf86Screens[pixmap->drawable.pScreen->myNum];
intel_debug_flush(scrn);
}
/**
* TODO:
* - support planemask using FULL_BLT_CMD?
@ -501,9 +494,19 @@ intel_uxa_copy(PixmapPtr dest, int src_x1, int src_y1, int dst_x1,
}
}
static void intel_uxa_done_copy(PixmapPtr dest)
static void intel_uxa_done(PixmapPtr pixmap)
{
ScrnInfoPtr scrn = xf86Screens[dest->drawable.pScreen->myNum];
ScrnInfoPtr scrn = xf86Screens[pixmap->drawable.pScreen->myNum];
intel_screen_private *intel = intel_get_screen_private(scrn);
if (IS_GEN6(intel) || IS_GEN7(intel)) {
/* workaround a random BLT hang */
BEGIN_BATCH_BLT(3);
OUT_BATCH(XY_SETUP_CLIP_BLT_CMD);
OUT_BATCH(0);
OUT_BATCH(0);
ADVANCE_BATCH();
}
intel_debug_flush(scrn);
}
@ -1225,13 +1228,13 @@ Bool intel_uxa_init(ScreenPtr screen)
intel->uxa_driver->check_solid = intel_uxa_check_solid;
intel->uxa_driver->prepare_solid = intel_uxa_prepare_solid;
intel->uxa_driver->solid = intel_uxa_solid;
intel->uxa_driver->done_solid = intel_uxa_done_solid;
intel->uxa_driver->done_solid = intel_uxa_done;
/* Copy */
intel->uxa_driver->check_copy = intel_uxa_check_copy;
intel->uxa_driver->prepare_copy = intel_uxa_prepare_copy;
intel->uxa_driver->copy = intel_uxa_copy;
intel->uxa_driver->done_copy = intel_uxa_done_copy;
intel->uxa_driver->done_copy = intel_uxa_done;
/* Composite */
if (IS_GEN2(intel)) {