138 lines
5.1 KiB
C
138 lines
5.1 KiB
C
/* $NetBSD: device.h,v 1.11 1996/10/01 01:04:50 jonathan Exp $ */
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Ralph Campbell.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)device.h 8.1 (Berkeley) 6/10/93
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*/
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/*
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* This structure is used to encapsulate the routines for a device driver.
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* This allows an "object oriented" approach so a controller device driver
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* can support multiple attached devices or a device can be attached to
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* different types of controllers.
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*/
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struct ScsiCmd;
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struct pmax_driver {
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char *d_name; /* device driver name (e.g., "rz") */
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/* routine to probe & initialize device */
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int (*d_init) __P((void *));
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/* routine to start operation */
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void (*d_start) __P((struct ScsiCmd *cmd));
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/* routine to call when operation complete */
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void (*d_done) __P(( int unit, int errno, int buflen,
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int status_byte));
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/* routine to call when interrupt is seen */
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int (*d_intr) __P((void* sc));
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};
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/*
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* This structure describes controllers directly connected to CPU
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* and is partially initialized in "ioconf.c" by the 'config' program.
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*/
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struct pmax_ctlr {
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struct pmax_driver *pmax_driver;/* controller driver routines */
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int pmax_unit; /* controller number */
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char *pmax_addr; /* address of controller */
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int pmax_pri; /* interrupt priority */
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int pmax_flags; /* flags */
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int pmax_alive; /* true if init routine succeeded */
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};
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/*
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* This structure describes devices connected to a SCSI interface
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* and is partially initialized in "ioconf.c" by the 'config' program.
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*/
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struct pmax_scsi_device {
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struct pmax_driver *sd_driver; /* SCSI device driver routines */
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struct pmax_driver *sd_cdriver; /* SCSI interface driver routines */
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int sd_unit; /* device unit number */
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int sd_ctlr; /* SCSI interface number */
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int sd_drive; /* SCSI address number */
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int sd_slave; /* LUN if device has multiple units */
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int sd_flags; /* flags */
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int sd_alive; /* true if init routine succeeded */
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};
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/* Define special unit types used by the config program */
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#define QUES -1 /* -1 means '?' */
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#define UNKNOWN -2 /* -2 means not set yet */
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/*
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* This structure contains information that a SCSI interface controller
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* needs to execute a SCSI command.
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*/
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typedef struct ScsiCmd {
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struct pmax_scsi_device *sd; /* device requesting the command */
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int unit; /* unit number passed to device done routine */
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int flags; /* control flags for this command (see below) */
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int buflen; /* length of the data buffer in bytes */
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char *buf; /* pointer to data buffer for this command */
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int cmdlen; /* length of data in cmdbuf */
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u_char *cmd; /* buffer for the SCSI command */
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int error; /* compatibility hack for new scsi */
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} ScsiCmd;
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/*
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* Define flags for controlling the SCSI command.
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*
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* SCSICMD_DATA_TO_DEVICE
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* TRUE -> data is to be transferred to the device.
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* FALSE -> data is to be transferred from the device.
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* meaningless if buflen is 0.
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* SCSICMD_USE_SYNC
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* Attempt to negotiate for a synchronous data transfer.
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*/
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#define SCSICMD_DATA_TO_DEVICE 0x01
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#define SCSICMD_USE_SYNC 0x02
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#ifdef _KERNEL
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extern struct pmax_ctlr pmax_cinit[];
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extern struct pmax_scsi_device scsi_dinit[];
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/*
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* Old-style pmax driver glue:
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* Callbacks to add known a controller, and to configure all slaves on
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* all known controllers.
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*/
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void pmax_add_scsi __P((struct pmax_driver *dp, int unit));
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void configure_scsi __P((void));
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#endif /* _KERNEL */
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