Support for AMD Am53c974 SCSI controllers; from NetBSD.

Thanks to Quentin Barnes <qbarnes@urbana.css.mot.com> for his help.

1 files changed, 72 insertions, 0 deletions

diff --git a/sys/dev/pci/pcscpreg.h b/sys/dev/pci/pcscpreg.h
new file mode 100644
index 00000000000..6558e57ebdd
--- /dev/null
+++ b/sys/dev/pci/pcscpreg.h
@@ -0,0 +1,72 @@
+/*	$NetBSD$	*/
+
+/*-
+ * Copyright (c) 1998 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Izumi Tsutsui.
+ *
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the NetBSD
+ *	Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+
+/*
+ * Am53c974 DMA engine registers
+ */
+
+#define	DMA_CMD		0x40 		/* Command */
+#define	 DMACMD_RSVD	0xFFFFFF28	/* reserved */
+#define	 DMACMD_DIR	0x00000080	/* Transfer Direction (read:1) */
+#define	 DMACMD_INTE	0x00000040	/* DMA Interrupt Enable	*/
+#define	 DMACMD_MDL	0x00000010	/* Map to Memory Description List */
+#define	 DMACMD_DIAG	0x00000004	/* Diagnostic */
+#define	 DMACMD_CMD	0x00000003	/* Command Code Bit */
+#define	  DMACMD_IDLE	0x00000000	/*  Idle */
+#define	  DMACMD_BLAST	0x00000001	/*  Blast */
+#define	  DMACMD_ABORT	0x00000002	/*  Abort */
+#define	  DMACMD_START	0x00000003	/*  Start */
+
+#define	DMA_STC		0x44		/* Start Transfer Count */
+#define	DMA_SPA		0x48		/* Start Physical Address */
+#define	DMA_WBC		0x4C		/* Working Byte Counter */
+#define	DMA_WAC		0x50		/* Working Address Counter */
+
+#define	DMA_STAT	0x54		/* Status Register */
+#define	 DMASTAT_RSVD	0xFFFFFF80	/* reserved */
+#define	 DMASTAT_PABT	0x00000040	/* PCI master/target Abort */
+#define	 DMASTAT_BCMP	0x00000020	/* BLAST Complete */
+#define	 DMASTAT_SINT	0x00000010	/* SCSI Interrupt */
+#define	 DMASTAT_DONE	0x00000008	/* DMA Transfer Terminated */
+#define	 DMASTAT_ABT	0x00000004	/* DMA Transfer Aborted */
+#define	 DMASTAT_ERR	0x00000002	/* DMA Transfer Error */
+#define	 DMASTAT_PWDN	0x00000001	/* Power Down Indicator */
+
+#define	DMA_SMDLA	0x58	/* Starting Memory Descpritor List Address */
+#define	DMA_WMAC	0x5C	/* Working MDL Counter */
+#define	DMA_SBAC	0x70	/* SCSI Bus and Control */