New upstream version 17.11-rc3

[deb_dpdk.git] / drivers / bus / dpaa / include / dpaa_bits.h

diff --git a/drivers/bus/dpaa/include/dpaa_bits.h b/drivers/bus/dpaa/include/dpaa_bits.h
new file mode 100644 (file)
index 0000000..71f2d80
--- /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 */