staging: fsl-mc: Move DPIO from staging to drivers/soc/fsl

Move the NXP DPIO (Datapath I/O Driver) out of the
drivers/staging directory and into the drivers/soc/fsl directory.

The DPIO driver enables access to Queue and Buffer Manager (QBMAN)
hardware on NXP DPAA2 devices. This is a prerequisite to moving the
DPAA2 Ethernet driver out of staging.

Signed-off-by: Roy Pledge <roy.pledge@nxp.com>
Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
Reviewed-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>

1 files changed, 83 insertions, 0 deletions

diff --git a/drivers/soc/fsl/dpio/dpio.h b/drivers/soc/fsl/dpio/dpio.h
new file mode 100644
index 000000000000..49194c8e45f1
--- /dev/null
+++ b/drivers/soc/fsl/dpio/dpio.h
@@ -0,0 +1,83 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
+/*
+ * Copyright 2013-2016 Freescale Semiconductor Inc.
+ * Copyright 2016 NXP
+ *
+ */
+#ifndef __FSL_DPIO_H
+#define __FSL_DPIO_H
+
+struct fsl_mc_io;
+
+int dpio_open(struct fsl_mc_io	*mc_io,
+	      u32		cmd_flags,
+	      int		dpio_id,
+	      u16		*token);
+
+int dpio_close(struct fsl_mc_io	*mc_io,
+	       u32		cmd_flags,
+	       u16		token);
+
+/**
+ * enum dpio_channel_mode - DPIO notification channel mode
+ * @DPIO_NO_CHANNEL: No support for notification channel
+ * @DPIO_LOCAL_CHANNEL: Notifications on data availability can be received by a
+ *	dedicated channel in the DPIO; user should point the queue's
+ *	destination in the relevant interface to this DPIO
+ */
+enum dpio_channel_mode {
+	DPIO_NO_CHANNEL = 0,
+	DPIO_LOCAL_CHANNEL = 1,
+};
+
+/**
+ * struct dpio_cfg - Structure representing DPIO configuration
+ * @channel_mode: Notification channel mode
+ * @num_priorities: Number of priorities for the notification channel (1-8);
+ *			relevant only if 'channel_mode = DPIO_LOCAL_CHANNEL'
+ */
+struct dpio_cfg {
+	enum dpio_channel_mode	channel_mode;
+	u8		num_priorities;
+};
+
+int dpio_enable(struct fsl_mc_io	*mc_io,
+		u32		cmd_flags,
+		u16		token);
+
+int dpio_disable(struct fsl_mc_io	*mc_io,
+		 u32		cmd_flags,
+		 u16		token);
+
+/**
+ * struct dpio_attr - Structure representing DPIO attributes
+ * @id: DPIO object ID
+ * @qbman_portal_ce_offset: offset of the software portal cache-enabled area
+ * @qbman_portal_ci_offset: offset of the software portal cache-inhibited area
+ * @qbman_portal_id: Software portal ID
+ * @channel_mode: Notification channel mode
+ * @num_priorities: Number of priorities for the notification channel (1-8);
+ *			relevant only if 'channel_mode = DPIO_LOCAL_CHANNEL'
+ * @qbman_version: QBMAN version
+ */
+struct dpio_attr {
+	int			id;
+	u64		qbman_portal_ce_offset;
+	u64		qbman_portal_ci_offset;
+	u16		qbman_portal_id;
+	enum dpio_channel_mode	channel_mode;
+	u8			num_priorities;
+	u32		qbman_version;
+};
+
+int dpio_get_attributes(struct fsl_mc_io	*mc_io,
+			u32		cmd_flags,
+			u16		token,
+			struct dpio_attr	*attr);
+
+int dpio_get_api_version(struct fsl_mc_io *mc_io,
+			 u32 cmd_flags,
+			 u16 *major_ver,
+			 u16 *minor_ver);
+
+#endif /* __FSL_DPIO_H */