1 files changed, 31 insertions, 0 deletions
diff --git a/src/southbridge/via/common/early_smbus_is_busy.c b/src/southbridge/via/common/early_smbus_is_busy.c
new file mode 100644
index 0000000000..1462141210
--- /dev/null
+++ b/src/southbridge/via/common/early_smbus_is_busy.c
@@ -0,0 +1,31 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013  Alexandru Gagniuc <mr.nuke.me@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "via_early_smbus.h"
+
+/**
+ * \brief Checks if the SMBus is currently busy with a transaction
+ *
+ * @param smbus_dev The base SMBus IO port
+ */
+int smbus_is_busy(u32 smbus_dev)
+{
+	/* Check if bit 0 of the status register is 1 (busy) or 0 (ready) */
+	return ((inb(SMBHSTSTAT(smbus_dev)) & (1 << 0)) == 1);
+}