1 files changed, 64 insertions, 0 deletions
diff --git a/sys/cam/cam_iosched.h b/sys/cam/cam_iosched.h
new file mode 100644
index 0000000..34c926d
--- /dev/null
+++ b/sys/cam/cam_iosched.h
@@ -0,0 +1,64 @@
+/*-
+ * CAM IO Scheduler Interface
+ *
+ * Copyright (c) 2015 Netflix, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification, immediately at the beginning of the file.
+ * 2. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _CAM_CAM_IOSCHED_H
+#define _CAM_CAM_IOSCHED_H
+
+/* No user-servicable parts in here. */
+#ifdef _KERNEL
+
+/* Forward declare all structs to keep interface thin */
+struct cam_iosched_softc;
+struct sysctl_ctx_list;
+struct sysctl_oid;
+union ccb;
+struct bio;
+
+int cam_iosched_init(struct cam_iosched_softc **, struct cam_periph *periph);
+void cam_iosched_fini(struct cam_iosched_softc *);
+void cam_iosched_sysctl_init(struct cam_iosched_softc *, struct sysctl_ctx_list *, struct sysctl_oid *);
+struct bio *cam_iosched_next_trim(struct cam_iosched_softc *isc);
+struct bio *cam_iosched_get_trim(struct cam_iosched_softc *isc);
+struct bio *cam_iosched_next_bio(struct cam_iosched_softc *isc);
+void cam_iosched_queue_work(struct cam_iosched_softc *isc, struct bio *bp);
+void cam_iosched_flush(struct cam_iosched_softc *isc, struct devstat *stp, int err);
+void cam_iosched_schedule(struct cam_iosched_softc *isc, struct cam_periph *periph);
+void cam_iosched_finish_trim(struct cam_iosched_softc *isc);
+void cam_iosched_submit_trim(struct cam_iosched_softc *isc);
+void cam_iosched_put_back_trim(struct cam_iosched_softc *isc, struct bio *bp);
+void cam_iosched_set_sort_queue(struct cam_iosched_softc *isc, int val);
+int cam_iosched_has_work_flags(struct cam_iosched_softc *isc, uint32_t flags);
+void cam_iosched_set_work_flags(struct cam_iosched_softc *isc, uint32_t flags);
+void cam_iosched_clr_work_flags(struct cam_iosched_softc *isc, uint32_t flags);
+void cam_iosched_trim_done(struct cam_iosched_softc *isc);
+int cam_iosched_bio_complete(struct cam_iosched_softc *isc, struct bio *bp, union ccb *done_ccb);
+
+#endif
+#endif