---

yaml --- r: 174636 b: refs/heads/master c: 5801ead h: refs/heads/master v: v3
git-mirror · Dec 8, 2009 · b8b71b4 · b8b71b4
1 parent f5e0247
commit b8b71b4
Show file tree

Hide file tree

Showing 7 changed files with 601 additions and 83 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f92a8b6758bdc0f277c4f42aa7d736a205ac9ded
+refs/heads/master: 5801ead6bd6bddf5505d6eab55f84d8ee8106cd8
diff --git a/trunk/drivers/gpu/drm/radeon/atom.c b/trunk/drivers/gpu/drm/radeon/atom.c
@@ -1214,3 +1214,28 @@ void atom_parse_cmd_header(struct atom_context *ctx, int index, uint8_t * frev,
 		*crev = CU8(idx + 3);
 	return;
 }
+
+int atom_allocate_fb_scratch(struct atom_context *ctx)
+{
+	int index = GetIndexIntoMasterTable(DATA, VRAM_UsageByFirmware);
+	uint16_t data_offset;
+	int usage_bytes;
+	struct _ATOM_VRAM_USAGE_BY_FIRMWARE *firmware_usage;
+
+	atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset);
+
+	firmware_usage = (struct _ATOM_VRAM_USAGE_BY_FIRMWARE *)(ctx->bios + data_offset);
+
+	DRM_DEBUG("atom firmware requested %08x %dkb\n",
+		  firmware_usage->asFirmwareVramReserveInfo[0].ulStartAddrUsedByFirmware,
+		  firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb);
+
+	usage_bytes = firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb * 1024;
+	if (usage_bytes == 0)
+		usage_bytes = 20 * 1024;
+	/* allocate some scratch memory */
+	ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL);
+	if (!ctx->scratch)
+		return -ENOMEM;
+	return 0;
+}