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Diffstat (limited to 'scsi/compat_30.h')
| -rw-r--r-- | scsi/compat_30.h | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/scsi/compat_30.h b/scsi/compat_30.h new file mode 100644 index 0000000..988aed7 --- /dev/null +++ b/scsi/compat_30.h @@ -0,0 +1,163 @@ +/* + * Mach Operating System + * Copyright (c) 1991,1990 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: compat_30.h + * Author: Alessandro Forin, Carnegie Mellon University + * Date: 4/91 + * + * Compatibility defs to retrofit Mach 3.0 drivers + * into Mach 2.6. + */ + +#ifndef _SCSI_COMPAT_30_ +#define _SCSI_COMPAT_30_ + +#include <kern/assert.h> + +#ifdef MACH_KERNEL +/* + * Mach 3.0 compiles with these definitions + */ + +#include <device/param.h> +#include <device/io_req.h> +#include <device/device_types.h> +#include <device/disk_status.h> + +/* + * Scratch temporary in io_req structure (for error handling) + */ +#define io_temporary io_error + +#else /*MACH_KERNEL*/ +/* + * Mach 2.x compiles with these definitions + */ + +/* ??? */ +typedef int dev_mode_t; +typedef int *dev_status_t; /* Variable-length array of integers */ +/* ??? */ + +/* Buffer structures */ + +typedef int io_return_t; + +#include <sys/param.h> +#include <sys/buf.h> + +#define io_req buf +typedef struct buf *io_req_t; + +#define io_req_alloc(ior,size) ior = geteblk(size) +#define io_req_free(ior) brelse(ior) + +/* + * Redefine fields for drivers using new names + */ +#define io_op b_flags +#define io_count b_bcount +#define io_error b_error +#define io_unit b_dev +#define io_recnum b_blkno +#define io_residual b_resid +#define io_data b_un.b_addr +#define io_done b_iodone + +/* + * Redefine fields for driver request list heads, using new names. + */ +#define io_next av_forw +#define io_prev av_back +/*#define io_next b_actf*/ +/*#define io_prev b_actl*/ +#define io_link b_forw +#define io_rlink b_back +/*#define io_count b_active*/ +/*#define io_residual b_errcnt*/ +#define io_alloc_size b_bufsize + +/* + * Scratch temporary in io_req structure (for error handling) + */ +#define io_temporary b_pfcent + +/* + * Redefine flags + */ +#define IO_WRITE B_WRITE +#define IO_READ B_READ +#define IO_OPEN B_OPEN +#define IO_DONE B_DONE +#define IO_ERROR B_ERROR +#define IO_BUSY B_BUSY +#define IO_WANTED B_WANTED +#define IO_BAD B_BAD +#define IO_CALL B_CALL +#define IO_INTERNAL B_MD1 + +#define IO_SPARE_START B_MD1 + +#include <sys/disklabel.h> + +/* Error codes */ + +#include <sys/errno.h> + +#define D_SUCCESS ESUCCESS +#define D_IO_ERROR EIO +#define D_NO_SUCH_DEVICE ENXIO +#define D_INVALID_SIZE EINVAL +#define D_ALREADY_OPEN EBUSY +#define D_INVALID_OPERATION EINVAL +#define D_NO_MEMORY ENOMEM +#define D_WOULD_BLOCK EWOULDBLOCK +#define D_DEVICE_DOWN EIO +#define D_READ_ONLY EROFS + +/* + * Debugging support + */ +#define db_printf kdbprintf +#define db_printsym(s,m) kdbpsymoff(s,1,"") + +/* + * Miscellaneous utils + */ + +#define check_memory(addr,dow) ((dow) ? wbadaddr(addr,4) : badaddr(addr,4)) + +#include <sys/kernel.h> /* for hz */ +#include <scsi/adapters/scsi_user_dma.h> + +#ifdef DECSTATION +#include <mach/mips/vm_param.h> /* for page size */ +#define ULTRIX_COMPAT 1 /* support for rzdisk disk formatter */ +#endif /*DECSTATION*/ + +#endif /*MACH_KERNEL*/ + +#endif /*_SCSI_COMPAT_30_*/ |