Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / net / ethernet / altera / altera_utils.c

diff --git a/kernel/drivers/net/ethernet/altera/altera_utils.c b/kernel/drivers/net/ethernet/altera/altera_utils.c
new file mode 100644 (file)
index 0000000..d7eeb17
--- /dev/null
+++ b/kernel/drivers/net/ethernet/altera/altera_utils.c
@@ -0,0 +1,44 @@
+/* Altera TSE SGDMA and MSGDMA Linux driver
+ * Copyright (C) 2014 Altera Corporation. All rights reserved
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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 "altera_tse.h"
+#include "altera_utils.h"
+
+void tse_set_bit(void __iomem *ioaddr, size_t offs, u32 bit_mask)
+{
+       u32 value = csrrd32(ioaddr, offs);
+       value |= bit_mask;
+       csrwr32(value, ioaddr, offs);
+}
+
+void tse_clear_bit(void __iomem *ioaddr, size_t offs, u32 bit_mask)
+{
+       u32 value = csrrd32(ioaddr, offs);
+       value &= ~bit_mask;
+       csrwr32(value, ioaddr, offs);
+}
+
+int tse_bit_is_set(void __iomem *ioaddr, size_t offs, u32 bit_mask)
+{
+       u32 value = csrrd32(ioaddr, offs);
+       return (value & bit_mask) ? 1 : 0;
+}
+
+int tse_bit_is_clear(void __iomem *ioaddr, size_t offs, u32 bit_mask)
+{
+       u32 value = csrrd32(ioaddr, offs);
+       return (value & bit_mask) ? 0 : 1;
+}