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lib: Fix querying context GTT size

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We need a new ioctl to find the correct GTT size to use when submitting
execbuffers (as opposed to wishing to know the global GTT size).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2015-10-14 14:17:55 +01:00
parent cd99ddead3
commit a22719358d
1 changed files with 13 additions and 5 deletions
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18
lib/ioctl_wrappers.c
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@ -1091,13 +1091,21 @@ uint64_t gem_aperture_size(int fd)
static uint64_t aperture_size = 0;
if (aperture_size == 0) {
struct drm_i915_gem_get_aperture aperture;
struct local_i915_gem_context_param p;
memset(&aperture, 0, sizeof(aperture));
aperture.aper_size = 256*1024*1024;
do_ioctl(fd, DRM_IOCTL_I915_GEM_GET_APERTURE, &aperture);
memset(&p, 0, sizeof(p));
p.param = 0x3;
if (ioctl(fd, LOCAL_IOCTL_I915_GEM_CONTEXT_GETPARAM, &p) == 0) {
aperture_size = p.value;
} else {
struct drm_i915_gem_get_aperture aperture;
aperture_size = aperture.aper_size;
memset(&aperture, 0, sizeof(aperture));
aperture.aper_size = 256*1024*1024;
do_ioctl(fd, DRM_IOCTL_I915_GEM_GET_APERTURE, &aperture);
aperture_size = aperture.aper_size;
}
}
return aperture_size;