1 files changed, 91 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/display/intel_fbdev_fb.c b/drivers/gpu/drm/xe/display/intel_fbdev_fb.c
new file mode 100644
index 000000000000..7ad76022cb14
--- /dev/null
+++ b/drivers/gpu/drm/xe/display/intel_fbdev_fb.c
@@ -0,0 +1,91 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+
+#include <linux/fb.h>
+
+#include "intel_fbdev_fb.h"
+#include "xe_bo.h"
+#include "xe_ttm_stolen_mgr.h"
+#include "xe_wa.h"
+
+#include <generated/xe_device_wa_oob.h>
+
+/*
+ * FIXME: There shouldn't be any reason to have XE_PAGE_SIZE stride
+ * alignment. The same 64 as i915 uses should be fine, and we shouldn't need to
+ * have driver specific values. However, dropping the stride alignment to 64
+ * leads to underflowing the bo pin count in the atomic cleanup work.
+ */
+u32 intel_fbdev_fb_pitch_align(u32 stride)
+{
+	return ALIGN(stride, XE_PAGE_SIZE);
+}
+
+struct drm_gem_object *intel_fbdev_fb_bo_create(struct drm_device *drm, int size)
+{
+	struct xe_device *xe = to_xe_device(drm);
+	struct xe_bo *obj;
+
+	obj = ERR_PTR(-ENODEV);
+
+	if (!IS_DGFX(xe) && !XE_DEVICE_WA(xe, 22019338487_display)) {
+		obj = xe_bo_create_pin_map_novm(xe, xe_device_get_root_tile(xe),
+						size,
+						ttm_bo_type_kernel, XE_BO_FLAG_SCANOUT |
+						XE_BO_FLAG_STOLEN |
+						XE_BO_FLAG_GGTT, false);
+		if (!IS_ERR(obj))
+			drm_info(&xe->drm, "Allocated fbdev into stolen\n");
+		else
+			drm_info(&xe->drm, "Allocated fbdev into stolen failed: %li\n", PTR_ERR(obj));
+	}
+
+	if (IS_ERR(obj)) {
+		obj = xe_bo_create_pin_map_novm(xe, xe_device_get_root_tile(xe), size,
+						ttm_bo_type_kernel, XE_BO_FLAG_SCANOUT |
+						XE_BO_FLAG_VRAM_IF_DGFX(xe_device_get_root_tile(xe)) |
+						XE_BO_FLAG_GGTT, false);
+	}
+
+	if (IS_ERR(obj)) {
+		drm_err(&xe->drm, "failed to allocate framebuffer (%pe)\n", obj);
+		return ERR_PTR(-ENOMEM);
+	}
+
+	return &obj->ttm.base;
+}
+
+void intel_fbdev_fb_bo_destroy(struct drm_gem_object *obj)
+{
+	xe_bo_unpin_map_no_vm(gem_to_xe_bo(obj));
+}
+
+int intel_fbdev_fb_fill_info(struct drm_device *drm, struct fb_info *info,
+			     struct drm_gem_object *_obj, struct i915_vma *vma)
+{
+	struct xe_bo *obj = gem_to_xe_bo(_obj);
+	struct pci_dev *pdev = to_pci_dev(drm->dev);
+
+	if (!(obj->flags & XE_BO_FLAG_SYSTEM)) {
+		if (obj->flags & XE_BO_FLAG_STOLEN)
+			info->fix.smem_start = xe_ttm_stolen_io_offset(obj, 0);
+		else
+			info->fix.smem_start =
+				pci_resource_start(pdev, 2) +
+				xe_bo_addr(obj, 0, XE_PAGE_SIZE);
+
+		info->fix.smem_len = obj->ttm.base.size;
+	} else {
+		/* XXX: Pure fiction, as the BO may not be physically accessible.. */
+		info->fix.smem_start = 0;
+		info->fix.smem_len = obj->ttm.base.size;
+	}
+	XE_WARN_ON(iosys_map_is_null(&obj->vmap));
+
+	info->screen_base = obj->vmap.vaddr_iomem;
+	info->screen_size = obj->ttm.base.size;
+
+	return 0;
+}