drm/i915/lmem: add the fake lmem region

[linux-2.6-microblaze.git] / drivers / gpu / drm / i915 / i915_drv.c

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 21273b5..480e205 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -1483,6 +1483,21 @@ int i915_driver_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
        if (!i915_modparams.nuclear_pageflip && match_info->gen < 5)
                dev_priv->drm.driver_features &= ~DRIVER_ATOMIC;
 
+       /*
+        * Check if we support fake LMEM -- for now we only unleash this for
+        * the live selftests(test-and-exit).
+        */
+       if (IS_ENABLED(CONFIG_DRM_I915_UNSTABLE_FAKE_LMEM)) {
+               if (INTEL_GEN(dev_priv) >= 9 && i915_selftest.live < 0 &&
+                   i915_modparams.fake_lmem_start) {
+                       mkwrite_device_info(dev_priv)->memory_regions =
+                               REGION_SMEM | REGION_LMEM | REGION_STOLEN;
+                       mkwrite_device_info(dev_priv)->is_dgfx = true;
+                       GEM_BUG_ON(!HAS_LMEM(dev_priv));
+                       GEM_BUG_ON(!IS_DGFX(dev_priv));
+               }
+       }
+
        ret = pci_enable_device(pdev);
        if (ret)
                goto out_fini;