Initial source

1 files changed, 150 insertions, 0 deletions

diff --git a/scsi/adapters/scsi_dma.h b/scsi/adapters/scsi_dma.h
new file mode 100644
index 00000000..9401a164
--- /dev/null
+++ b/scsi/adapters/scsi_dma.h
@@ -0,0 +1,150 @@
+/* 
+ * Mach Operating System
+ * Copyright (c) 1991,1990,1989 Carnegie Mellon University
+ * All Rights Reserved.
+ * 
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS AS-IS
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ * 
+ * Carnegie Mellon requests users of this software to return to
+ * 
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ * 
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+/*
+ *	File: scsi_dma.h
+ * 	Author: Alessandro Forin, Carnegie Mellon University
+ *	Date:	7/91
+ *
+ *	DMA operations that an HBA driver might invoke.
+ *
+ */
+
+/*
+ * This defines much more than usually needed, mainly
+ * to cover for the case of no DMA at all and/or only
+ * DMA from/to a specialized buffer ( which means the
+ * CPU has to copy data into/outof it ).
+ */
+
+typedef struct {
+	opaque_t	(*init)(
+				int 		dev_unit,
+				vm_offset_t 	base,
+				int		*dma_bsizep,
+				boolean_t	*oddbp);
+
+	void		(*new_target)(
+				opaque_t	dma_state,
+				target_info_t	*tgt);
+
+	void		(*map)(
+				opaque_t	dma_state,
+				target_info_t	*tgt);
+
+	int		(*start_cmd)(
+				opaque_t	dma_state,
+				target_info_t	*tgt);
+
+	void		(*end_xfer)(
+				opaque_t	dma_state,
+				target_info_t	*tgt,
+				int		xferred);
+
+	void		(*end_cmd)(
+				opaque_t	dma_state,
+				target_info_t	*tgt,
+				io_req_t	ior);
+
+	int		(*start_datain)(
+				opaque_t	dma_state,
+				target_info_t	*tgt);
+
+	int		(*start_msgin)(
+				opaque_t	dma_state,
+				target_info_t	*tgt);
+
+	void		(*end_msgin)(
+				opaque_t	dma_state,
+				target_info_t	*tgt);
+
+	boolean_t	(*start_dataout)(
+				opaque_t	dma_state,
+				target_info_t	*tgt,
+				volatile unsigned *regp,
+				unsigned	value,
+				unsigned char	*prefetch_count);
+
+	int		(*restart_datain_1)(
+				opaque_t	dma_state,
+				target_info_t	*tgt);
+
+	int		(*restart_datain_2)(
+				opaque_t	dma_state,
+				target_info_t	*tgt,
+				int		xferred);
+
+	void		(*restart_datain_3)(
+				opaque_t	dma_state,
+				target_info_t	*tgt);
+
+	int		(*restart_dataout_1)(
+				opaque_t	dma_state,
+				target_info_t	*tgt);
+
+	int		(*restart_dataout_2)(
+				opaque_t	dma_state,
+				target_info_t	*tgt,
+				int		xferred);
+
+	int		(*restart_dataout_3)(
+				opaque_t	dma_state,
+				target_info_t	*tgt,
+				volatile unsigned *regp);
+
+	void		(*restart_dataout_4)(
+				opaque_t	dma_state,
+				target_info_t	*tgt);
+
+	boolean_t	(*disconn_1)(
+				opaque_t	dma_state,
+				target_info_t	*tgt,
+				int		xferred);
+
+	boolean_t	(*disconn_2)(
+				opaque_t	dma_state,
+				target_info_t	*tgt);
+
+	boolean_t	(*disconn_3)(
+				opaque_t	dma_state,
+				target_info_t	*tgt,
+				int		xferred);
+
+	boolean_t	(*disconn_4)(
+				opaque_t	dma_state,
+				target_info_t	*tgt,
+				int		xferred);
+
+	boolean_t	(*disconn_5)(
+				opaque_t	dma_state,
+				target_info_t	*tgt,
+				int		xferred);
+
+	void		(*disconn_callback)(
+				opaque_t	dma_state,
+				target_info_t	*tgt);
+
+} scsi_dma_ops_t;
+