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-rw-r--r--drivers/bus/dpaa/include/dpaa_bits.h65
1 files changed, 65 insertions, 0 deletions
diff --git a/drivers/bus/dpaa/include/dpaa_bits.h b/drivers/bus/dpaa/include/dpaa_bits.h
new file mode 100644
index 00000000..71f2d809
--- /dev/null
+++ b/drivers/bus/dpaa/include/dpaa_bits.h
@@ -0,0 +1,65 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright 2017 NXP.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of NXP nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __DPAA_BITS_H
+#define __DPAA_BITS_H
+
+/* Bitfield stuff. */
+#define BITS_PER_ULONG (sizeof(unsigned long) << 3)
+#define SHIFT_PER_ULONG (((1 << 5) == BITS_PER_ULONG) ? 5 : 6)
+#define BITS_MASK(idx) (1UL << ((idx) & (BITS_PER_ULONG - 1)))
+#define BITS_IDX(idx) ((idx) >> SHIFT_PER_ULONG)
+
+static inline void dpaa_set_bits(unsigned long mask,
+ volatile unsigned long *p)
+{
+ *p |= mask;
+}
+
+static inline void dpaa_set_bit(int idx, volatile unsigned long *bits)
+{
+ dpaa_set_bits(BITS_MASK(idx), bits + BITS_IDX(idx));
+}
+
+static inline void dpaa_clear_bits(unsigned long mask,
+ volatile unsigned long *p)
+{
+ *p &= ~mask;
+}
+
+static inline void dpaa_clear_bit(int idx,
+ volatile unsigned long *bits)
+{
+ dpaa_clear_bits(BITS_MASK(idx), bits + BITS_IDX(idx));
+}
+
+#endif /* __DPAA_BITS_H */