sync with 0430.

1 files changed, 89 insertions, 0 deletions

diff --git a/sys/arch/sun3/dev/sivar.h b/sys/arch/sun3/dev/sivar.h
new file mode 100644
index 00000000000..1bbaee4b7b3
--- /dev/null
+++ b/sys/arch/sun3/dev/sivar.h
@@ -0,0 +1,89 @@
+/*	$NetBSD: sivar.h,v 1.1 1996/03/26 15:01:15 gwr Exp $	*/
+
+/*
+ * Copyright (c) 1995 David Jones, Gordon W. Ross
+ * 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.
+ * 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.
+ * 3. The name of the authors may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ * 4. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by
+ *      David Jones and Gordon Ross
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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.
+ */
+
+/*
+ * This file defines the interface between si.c and
+ * the bus-specific files: si_obio.c, si_vme.c
+ */
+
+/*
+ * Transfers smaller than this are done using PIO
+ * (on assumption they're not worth DMA overhead)
+ */
+#define	MIN_DMA_LEN 128
+
+/*
+ * Transfers lager than 65535 bytes need to be split-up.
+ * (Some of the FIFO logic has only 16 bits counters.)
+ * Make the size an integer multiple of the page size
+ * to avoid buf/cluster remap problems.  (paranoid?)
+ */
+#define	MAX_DMA_LEN 0xE000
+
+/*
+ * This structure is used to keep track of mapped DMA requests.
+ */
+struct si_dma_handle {
+	int 		dh_flags;
+#define	SIDH_BUSY	1		/* This DH is in use */
+#define	SIDH_OUT	2		/* DMA does data out (write) */
+	u_char *	dh_addr;	/* KVA of start of buffer */
+	int 		dh_maplen;	/* Length of KVA mapping. */
+	long		dh_dvma;	/* VA of buffer in DVMA space */
+};
+
+/*
+ * The first structure member has to be the ncr5380_softc
+ * so we can just cast to go back and fourth between them.
+ */
+struct si_softc {
+	struct ncr5380_softc	ncr_sc;
+	volatile struct si_regs	*sc_regs;
+	int		sc_adapter_type;
+	int		sc_adapter_iv_am;	/* int. vec + address modifier */
+	int 	sc_reqlen;  		/* requested transfer length */
+	struct si_dma_handle *sc_dma;
+	/* DMA command block for the OBIO controller. */
+	void *sc_dmacmd;
+};
+
+extern int si_debug;
+
+void si_attach __P((struct si_softc *));
+int  si_intr __P((void *));
+
+void si_reset_adapter __P((struct ncr5380_softc *));
+
+void si_dma_alloc __P((struct ncr5380_softc *));
+void si_dma_free __P((struct ncr5380_softc *));
+void si_dma_poll __P((struct ncr5380_softc *));