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drm/i915: Support readback of stolen objects upon error

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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chris Wilson 2012-11-15 11:32:23 +00:00 committed by Daniel Vetter
parent c1ad11fce8
commit 960e3564bf
1 changed files with 8 additions and 0 deletions
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8
drivers/gpu/drm/i915/i915_irq.c
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@ -929,6 +929,14 @@ i915_error_object_create(struct drm_i915_private *dev_priv,
reloc_offset);
memcpy_fromio(d, s, PAGE_SIZE);
io_mapping_unmap_atomic(s);
} else if (src->stolen) {
unsigned long offset;
offset = dev_priv->mm.stolen_base;
offset += src->stolen->start;
offset += i << PAGE_SHIFT;
memcpy_fromio(d, (void *)offset, PAGE_SIZE);
} else {
struct page *page;
void *s;