diff options
| -rw-r--r-- | drivers/gpu/drm/xe/display/xe_fb_pin.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/display/xe_fb_pin.c b/drivers/gpu/drm/xe/display/xe_fb_pin.c index 67b956a6da8d..16e04b24daee 100644 --- a/drivers/gpu/drm/xe/display/xe_fb_pin.c +++ b/drivers/gpu/drm/xe/display/xe_fb_pin.c @@ -217,6 +217,23 @@ static struct i915_vma *__xe_pin_fb_vma(struct intel_framebuffer *fb, goto err; } + if (IS_DGFX(to_xe_device(bo->ttm.base.dev)) && + intel_fb_rc_ccs_cc_plane(&fb->base) >= 0 && + !(bo->flags & XE_BO_NEEDS_CPU_ACCESS)) { + struct xe_tile *tile = xe_device_get_root_tile(xe); + + /* + * If we need to able to access the clear-color value stored in + * the buffer, then we require that such buffers are also CPU + * accessible. This is important on small-bar systems where + * only some subset of VRAM is CPU accessible. + */ + if (tile->mem.vram.io_size < tile->mem.vram.usable_size) { + ret = -EINVAL; + goto err; + } + } + /* * Pin the framebuffer, we can't use xe_bo_(un)pin functions as the * assumptions are incorrect for framebuffers |