From f07a4c844da9f0ecae5bbee1ab94be56505f26f7 Mon Sep 17 00:00:00 2001 From: Thomas Bushnell Date: Tue, 25 Feb 1997 21:28:37 +0000 Subject: Initial source --- scsi/adapters/scsi_dma.h | 150 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 150 insertions(+) create mode 100644 scsi/adapters/scsi_dma.h (limited to 'scsi/adapters/scsi_dma.h') diff --git a/scsi/adapters/scsi_dma.h b/scsi/adapters/scsi_dma.h new file mode 100644 index 0000000..9401a16 --- /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; + -- cgit v1.2.3