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-rw-r--r--arch/sparc/include/uapi/asm/oradax.h91
1 files changed, 91 insertions, 0 deletions
diff --git a/arch/sparc/include/uapi/asm/oradax.h b/arch/sparc/include/uapi/asm/oradax.h
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+++ b/arch/sparc/include/uapi/asm/oradax.h
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+/*
+ * 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 */