1 files changed, 100 insertions, 0 deletions
diff --git a/freebsd/sys/dev/xdma/xdma_bank.c b/freebsd/sys/dev/xdma/xdma_bank.c
new file mode 100644
index 00000000..96ddef97
--- /dev/null
+++ b/freebsd/sys/dev/xdma/xdma_bank.c
@@ -0,0 +1,100 @@
+#include <machine/rtems-bsd-kernel-space.h>
+
+/*-
+ * Copyright (c) 2018-2019 Ruslan Bukin <br@bsdpad.com>
+ * All rights reserved.
+ *
+ * This software was developed by SRI International and the University of
+ * Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237
+ * ("CTSRD"), as part of the DARPA CRASH research programme.
+ *
+ * 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.
+ * 2. 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.
+ *
+ * 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <rtems/bsd/local/opt_platform.h>
+#include <sys/param.h>
+#include <sys/conf.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+
+#include <machine/bus.h>
+
+#include <dev/xdma/xdma.h>
+
+void
+xchan_bank_init(xdma_channel_t *xchan)
+{
+	struct xdma_request *xr;
+	xdma_controller_t *xdma;
+	int i;
+
+	xdma = xchan->xdma;
+	KASSERT(xdma != NULL, ("xdma is NULL"));
+
+	xchan->xr_mem = malloc(sizeof(struct xdma_request) * xchan->xr_num,
+	    M_XDMA, M_WAITOK | M_ZERO);
+
+	for (i = 0; i < xchan->xr_num; i++) {
+		xr = &xchan->xr_mem[i];
+		TAILQ_INSERT_TAIL(&xchan->bank, xr, xr_next);
+	}
+}
+
+int
+xchan_bank_free(xdma_channel_t *xchan)
+{
+
+	free(xchan->xr_mem, M_XDMA);
+
+	return (0);
+}
+
+struct xdma_request *
+xchan_bank_get(xdma_channel_t *xchan)
+{
+	struct xdma_request *xr;
+	struct xdma_request *xr_tmp;
+
+	QUEUE_BANK_LOCK(xchan);
+	TAILQ_FOREACH_SAFE(xr, &xchan->bank, xr_next, xr_tmp) {
+		TAILQ_REMOVE(&xchan->bank, xr, xr_next);
+		break;
+	}
+	QUEUE_BANK_UNLOCK(xchan);
+
+	return (xr);
+}
+
+int
+xchan_bank_put(xdma_channel_t *xchan, struct xdma_request *xr)
+{
+
+	QUEUE_BANK_LOCK(xchan);
+	TAILQ_INSERT_TAIL(&xchan->bank, xr, xr_next);
+	QUEUE_BANK_UNLOCK(xchan);
+
+	return (0);
+}