unstub i915_gem_object_create_shmem_from_data()

diff --git a/sys/dev/pci/drm/i915/gem/i915_gem_shmem.c b/sys/dev/pci/drm/i915/gem/i915_gem_shmem.c
index 5d05dcc..49c81fc 100644 (file)
--- a/sys/dev/pci/drm/i915/gem/i915_gem_shmem.c
+++ b/sys/dev/pci/drm/i915/gem/i915_gem_shmem.c
@@ -654,13 +654,11 @@ i915_gem_object_create_shmem(struct drm_i915_private *i915,
 }
 
 /* Allocate a new GEM object and fill it with the supplied data */
+#ifdef __linux__
 struct drm_i915_gem_object *
 i915_gem_object_create_shmem_from_data(struct drm_i915_private *dev_priv,
                                       const void *data, resource_size_t size)
 {
-       STUB();
-       return NULL;
-#ifdef notyet
        struct drm_i915_gem_object *obj;
        struct file *file;
        resource_size_t offset;
@@ -706,8 +704,59 @@ i915_gem_object_create_shmem_from_data(struct drm_i915_private *dev_priv,
 fail:
        i915_gem_object_put(obj);
        return ERR_PTR(err);
-#endif
 }
+#else /* !__linux__ */
+struct drm_i915_gem_object *
+i915_gem_object_create_shmem_from_data(struct drm_i915_private *dev_priv,
+                                      const void *data, resource_size_t size)
+{
+       struct drm_i915_gem_object *obj;
+       struct uvm_object *uao;
+       resource_size_t offset;
+       int err;
+
+       GEM_WARN_ON(IS_DGFX(dev_priv));
+       obj = i915_gem_object_create_shmem(dev_priv, round_up(size, PAGE_SIZE));
+       if (IS_ERR(obj))
+               return obj;
+
+       GEM_BUG_ON(obj->write_domain != I915_GEM_DOMAIN_CPU);
+
+       uao = obj->base.uao;
+       offset = 0;
+       do {
+               unsigned int len = min_t(typeof(size), size, PAGE_SIZE);
+               struct vm_page *page;
+               void *pgdata, *vaddr;
+               struct pglist plist;
+
+               TAILQ_INIT(&plist);
+               if (uvm_obj_wire(uao, trunc_page(offset),
+                   trunc_page(offset) + PAGE_SIZE, &plist)) {
+                       err = -ENOMEM;
+                       goto fail;
+               }
+               page = TAILQ_FIRST(&plist);
+
+               vaddr = kmap(page);
+               memcpy(vaddr, data, len);
+               kunmap_va(vaddr);
+
+               uvm_obj_unwire(uao, trunc_page(offset),
+                   trunc_page(offset) + PAGE_SIZE);
+
+               size -= len;
+               data += len;
+               offset += len;
+       } while (size);
+
+       return obj;
+
+fail:
+       i915_gem_object_put(obj);
+       return ERR_PTR(err);
+}
+#endif
 
 static int init_shmem(struct intel_memory_region *mem)
 {