1 files changed, 78 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/bios/image.c b/drivers/gpu/drm/nouveau/core/subdev/bios/image.c
new file mode 100644
index 000000000000..373f9a564ac9
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/bios/image.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2014 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs <bskeggs@redhat.com>
+ */
+
+#include <subdev/bios.h>
+#include <subdev/bios/image.h>
+#include <subdev/bios/pcir.h>
+#include <subdev/bios/npde.h>
+
+static bool
+nvbios_imagen(struct nouveau_bios *bios, struct nvbios_image *image)
+{
+	struct nvbios_pcirT pcir;
+	struct nvbios_npdeT npde;
+	u8  ver;
+	u16 hdr;
+	u32 data;
+
+	switch ((data = nv_ro16(bios, image->base + 0x00))) {
+	case 0xaa55:
+	case 0xbb77:
+	case 0x4e56: /* NV */
+		break;
+	default:
+		nv_debug(bios, "%08x: ROM signature (%04x) unknown\n",
+			 image->base, data);
+		return false;
+	}
+
+	if (!(data = nvbios_pcirTp(bios, image->base, &ver, &hdr, &pcir)))
+		return false;
+	image->size = pcir.image_size;
+	image->type = pcir.image_type;
+	image->last = pcir.last;
+
+	if (image->type != 0x70) {
+		if (!(data = nvbios_npdeTp(bios, image->base, &npde)))
+			return true;
+		image->size = npde.image_size;
+		image->last = npde.last;
+	} else {
+		image->last = true;
+	}
+
+	return true;
+}
+
+bool
+nvbios_image(struct nouveau_bios *bios, int idx, struct nvbios_image *image)
+{
+	memset(image, 0x00, sizeof(*image));
+	do {
+		image->base += image->size;
+		if (image->last || !nvbios_imagen(bios, image))
+			return false;
+	} while(idx--);
+	return true;
+}