diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2014-04-17 21:04:15 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2014-06-11 11:05:27 +0100 |
| commit | 1217dbc88e0901e4a657ee51e2e3b7d00bb72b77 (patch) | |
| tree | 29b0e1165494e6a0483699c9525c7e75763481d5 | |
| parent | ee7d2e0a8ef882c1d4e0e77a0148b54dcfbf4236 (diff) | |
sna: Support efficient cursor updates for old machines
Given a kernel patch to fix coherency of physical objects, we can use a
more efficient method for updating cursors.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
| -rw-r--r-- | src/sna/sna_display.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/src/sna/sna_display.c b/src/sna/sna_display.c index 12f1e8d2..251d305b 100644 --- a/src/sna/sna_display.c +++ b/src/sna/sna_display.c @@ -4366,6 +4366,7 @@ sna_cursor_pre_init(struct sna *sna) uint64_t name; uint64_t value; } cap; + int v; if (sna->mode.num_real_crtc == 0) return; @@ -4374,6 +4375,8 @@ sna_cursor_pre_init(struct sna *sna) #define DRM_CAP_CURSOR_WIDTH 8 #define DRM_CAP_CURSOR_HEIGHT 9 +#define I915_PARAM_HAS_COHERENT_PHYS_GTT 29 + sna->cursor.max_size = 64; cap.value = 0; @@ -4387,7 +4390,17 @@ sna_cursor_pre_init(struct sna *sna) assert(sna->cursor.max_size == cap.value); #endif - sna->cursor.use_gtt = sna->kgem.gen >= 033; + v = -1; /* No param uses the sign bit, reserve it for errors */ + if (sna->kgem.gen >= 033) { + v = 1; + } else { + drm_i915_getparam_t gp = { + I915_PARAM_HAS_COHERENT_PHYS_GTT, + &v, + }; + (void)drmIoctl(sna->kgem.fd, DRM_IOCTL_I915_GETPARAM, &gp); + } + sna->cursor.use_gtt = v > 0; DBG(("%s: cursor updates use_gtt?=%d\n", __FUNCTION__, sna->cursor.use_gtt)); |