bus: fsl-mc: dpio: add global dpaa2 definitions

Create header for global dpaa2 definitions.  Add definitions
for dequeue results.

Signed-off-by: Roy Pledge <Roy.Pledge@nxp.com>
Signed-off-by: Stuart Yoder <stuart.yoder@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/fsl-mc/include/dpaa2-global.h

@@ -0,0 +1,202 @@
+/*
+ * Copyright 2014-2016 Freescale Semiconductor Inc.
+ * Copyright 2016 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 Freescale Semiconductor nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``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 Freescale Semiconductor 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 __FSL_DPAA2_GLOBAL_H
+#define __FSL_DPAA2_GLOBAL_H
+
+#include <linux/types.h>
+#include <linux/cpumask.h>
+#include "dpaa2-fd.h"
+
+struct dpaa2_dq {
+	union {
+		struct common {
+			u8 verb;
+			u8 reserved[63];
+		} common;
+		struct dq {
+			u8 verb;
+			u8 stat;
+			__le16 seqnum;
+			__le16 oprid;
+			u8 reserved;
+			u8 tok;
+			__le32 fqid;
+			u32 reserved2;
+			__le32 fq_byte_cnt;
+			__le32 fq_frm_cnt;
+			__le64 fqd_ctx;
+			u8 fd[32];
+		} dq;
+		struct scn {
+			u8 verb;
+			u8 stat;
+			u8 state;
+			u8 reserved;
+			__le32 rid_tok;
+			__le64 ctx;
+		} scn;
+	};
+};
+
+/* Parsing frame dequeue results */
+/* FQ empty */
+#define DPAA2_DQ_STAT_FQEMPTY       0x80
+/* FQ held active */
+#define DPAA2_DQ_STAT_HELDACTIVE    0x40
+/* FQ force eligible */
+#define DPAA2_DQ_STAT_FORCEELIGIBLE 0x20
+/* valid frame */
+#define DPAA2_DQ_STAT_VALIDFRAME    0x10
+/* FQ ODP enable */
+#define DPAA2_DQ_STAT_ODPVALID      0x04
+/* volatile dequeue */
+#define DPAA2_DQ_STAT_VOLATILE      0x02
+/* volatile dequeue command is expired */
+#define DPAA2_DQ_STAT_EXPIRED       0x01
+
+#define DQ_FQID_MASK		0x00FFFFFF
+#define DQ_FRAME_COUNT_MASK	0x00FFFFFF
+
+/**
+ * dpaa2_dq_flags() - Get the stat field of dequeue response
+ * @dq: the dequeue result.
+ */
+static inline u32 dpaa2_dq_flags(const struct dpaa2_dq *dq)
+{
+	return dq->dq.stat;
+}
+
+/**
+ * dpaa2_dq_is_pull() - Check whether the dq response is from a pull
+ *                      command.
+ * @dq: the dequeue result
+ *
+ * Return 1 for volatile(pull) dequeue, 0 for static dequeue.
+ */
+static inline int dpaa2_dq_is_pull(const struct dpaa2_dq *dq)
+{
+	return (int)(dpaa2_dq_flags(dq) & DPAA2_DQ_STAT_VOLATILE);
+}
+
+/**
+ * dpaa2_dq_is_pull_complete() - Check whether the pull command is completed.
+ * @dq: the dequeue result
+ *
+ * Return boolean.
+ */
+static inline bool dpaa2_dq_is_pull_complete(const struct dpaa2_dq *dq)
+{
+	return !!(dpaa2_dq_flags(dq) & DPAA2_DQ_STAT_EXPIRED);
+}
+
+/**
+ * dpaa2_dq_seqnum() - Get the seqnum field in dequeue response
+ * @dq: the dequeue result
+ *
+ * seqnum is valid only if VALIDFRAME flag is TRUE
+ *
+ * Return seqnum.
+ */
+static inline u16 dpaa2_dq_seqnum(const struct dpaa2_dq *dq)
+{
+	return le16_to_cpu(dq->dq.seqnum);
+}
+
+/**
+ * dpaa2_dq_odpid() - Get the odpid field in dequeue response
+ * @dq: the dequeue result
+ *
+ * odpid is valid only if ODPVALID flag is TRUE.
+ *
+ * Return odpid.
+ */
+static inline u16 dpaa2_dq_odpid(const struct dpaa2_dq *dq)
+{
+	return le16_to_cpu(dq->dq.oprid);
+}
+
+/**
+ * dpaa2_dq_fqid() - Get the fqid in dequeue response
+ * @dq: the dequeue result
+ *
+ * Return fqid.
+ */
+static inline u32 dpaa2_dq_fqid(const struct dpaa2_dq *dq)
+{
+	return le32_to_cpu(dq->dq.fqid) & DQ_FQID_MASK;
+}
+
+/**
+ * dpaa2_dq_byte_count() - Get the byte count in dequeue response
+ * @dq: the dequeue result
+ *
+ * Return the byte count remaining in the FQ.
+ */
+static inline u32 dpaa2_dq_byte_count(const struct dpaa2_dq *dq)
+{
+	return le32_to_cpu(dq->dq.fq_byte_cnt);
+}
+
+/**
+ * dpaa2_dq_frame_count() - Get the frame count in dequeue response
+ * @dq: the dequeue result
+ *
+ * Return the frame count remaining in the FQ.
+ */
+static inline u32 dpaa2_dq_frame_count(const struct dpaa2_dq *dq)
+{
+	return le32_to_cpu(dq->dq.fq_frm_cnt) & DQ_FRAME_COUNT_MASK;
+}
+
+/**
+ * dpaa2_dq_fd_ctx() - Get the frame queue context in dequeue response
+ * @dq: the dequeue result
+ *
+ * Return the frame queue context.
+ */
+static inline u64 dpaa2_dq_fqd_ctx(const struct dpaa2_dq *dq)
+{
+	return le64_to_cpu(dq->dq.fqd_ctx);
+}
+
+/**
+ * dpaa2_dq_fd() - Get the frame descriptor in dequeue response
+ * @dq: the dequeue result
+ *
+ * Return the frame descriptor.
+ */
+static inline const struct dpaa2_fd *dpaa2_dq_fd(const struct dpaa2_dq *dq)
+{
+	return (const struct dpaa2_fd *)&dq->dq.fd[0];
+}
+
+#endif /* __FSL_DPAA2_GLOBAL_H */