Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next

Pull sparc updates from David Miller:
 "Of note is the addition of a driver for the Data Analytics
  Accelerator, and some small cleanups"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next:
  oradax: Fix return value check in dax_attach()
  sparc: vDSO: remove an extra tab
  sparc64: drop unneeded compat include
  sparc64: Oracle DAX driver
  sparc64: Oracle DAX infrastructure

arch/sparc/include/uapi/asm/oradax.h

@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that 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/>.
+ */
+
+/*
+ * Oracle DAX driver API definitions
+ */
+
+#ifndef _ORADAX_H
+#define	_ORADAX_H
+
+#include <linux/types.h>
+
+#define	CCB_KILL 0
+#define	CCB_INFO 1
+#define	CCB_DEQUEUE 2
+
+struct dax_command {
+	__u16 command;		/* CCB_KILL/INFO/DEQUEUE */
+	__u16 ca_offset;	/* offset into mmapped completion area */
+};
+
+struct ccb_kill_result {
+	__u16 action;		/* action taken to kill ccb */
+};
+
+struct ccb_info_result {
+	__u16 state;		/* state of enqueued ccb */
+	__u16 inst_num;		/* dax instance number of enqueued ccb */
+	__u16 q_num;		/* queue number of enqueued ccb */
+	__u16 q_pos;		/* ccb position in queue */
+};
+
+struct ccb_exec_result {
+	__u64	status_data;	/* additional status data (e.g. bad VA) */
+	__u32	status;		/* one of DAX_SUBMIT_* */
+};
+
+union ccb_result {
+	struct ccb_exec_result exec;
+	struct ccb_info_result info;
+	struct ccb_kill_result kill;
+};
+
+#define	DAX_MMAP_LEN		(16 * 1024)
+#define	DAX_MAX_CCBS		15
+#define	DAX_CCB_BUF_MAXLEN	(DAX_MAX_CCBS * 64)
+#define	DAX_NAME		"oradax"
+
+/* CCB_EXEC status */
+#define	DAX_SUBMIT_OK			0
+#define	DAX_SUBMIT_ERR_RETRY		1
+#define	DAX_SUBMIT_ERR_WOULDBLOCK	2
+#define	DAX_SUBMIT_ERR_BUSY		3
+#define	DAX_SUBMIT_ERR_THR_INIT		4
+#define	DAX_SUBMIT_ERR_ARG_INVAL	5
+#define	DAX_SUBMIT_ERR_CCB_INVAL	6
+#define	DAX_SUBMIT_ERR_NO_CA_AVAIL	7
+#define	DAX_SUBMIT_ERR_CCB_ARR_MMU_MISS	8
+#define	DAX_SUBMIT_ERR_NOMAP		9
+#define	DAX_SUBMIT_ERR_NOACCESS		10
+#define	DAX_SUBMIT_ERR_TOOMANY		11
+#define	DAX_SUBMIT_ERR_UNAVAIL		12
+#define	DAX_SUBMIT_ERR_INTERNAL		13
+
+/* CCB_INFO states - must match HV_CCB_STATE_* definitions */
+#define	DAX_CCB_COMPLETED	0
+#define	DAX_CCB_ENQUEUED	1
+#define	DAX_CCB_INPROGRESS	2
+#define	DAX_CCB_NOTFOUND	3
+
+/* CCB_KILL actions - must match HV_CCB_KILL_* definitions */
+#define	DAX_KILL_COMPLETED	0
+#define	DAX_KILL_DEQUEUED	1
+#define	DAX_KILL_KILLED		2
+#define	DAX_KILL_NOTFOUND	3
+
+#endif /* _ORADAX_H */