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/* $NetBSD: device.h,v 1.12 1997/01/31 02:00:56 thorpej Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell.
*
* 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 University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
*
* @(#)device.h 8.1 (Berkeley) 6/10/93
*/
/*
* This structure is used to encapsulate the routines for a device driver.
* This allows an "object oriented" approach so a controller device driver
* can support multiple attached devices or a device can be attached to
* different types of controllers.
*/
struct ScsiCmd;
struct device;
struct pmax_driver {
char *d_name; /* device driver name (e.g., "rz") */
/* routine to probe & initialize device */
int (*d_init) __P((void *));
/* routine to start operation */
void (*d_start) __P((struct ScsiCmd *cmd));
/* routine to call when operation complete */
void (*d_done) __P(( int unit, int errno, int buflen,
int status_byte));
/* routine to call when interrupt is seen */
int (*d_intr) __P((void* sc));
};
/*
* This structure describes controllers directly connected to CPU
* and is partially initialized in "ioconf.c" by the 'config' program.
*/
struct pmax_ctlr {
struct pmax_driver *pmax_driver;/* controller driver routines */
int pmax_unit; /* controller number */
char *pmax_addr; /* address of controller */
int pmax_pri; /* interrupt priority */
int pmax_flags; /* flags */
int pmax_alive; /* true if init routine succeeded */
};
/*
* This structure describes devices connected to a SCSI interface
* and is partially initialized in "ioconf.c" by the 'config' program.
*/
struct pmax_scsi_device {
struct pmax_driver *sd_driver; /* SCSI device driver routines */
struct pmax_driver *sd_cdriver; /* SCSI interface driver routines */
int sd_unit; /* device unit number */
int sd_ctlr; /* SCSI interface number */
int sd_drive; /* SCSI address number */
int sd_lun; /* LUN if device has multiple units */
int sd_flags; /* flags */
int sd_alive; /* true if init routine succeeded */
struct device *sd_devp; /* new config glue kludge */
};
/* Define special unit types used by the config program */
#define QUES -1 /* -1 means '?' */
#define UNKNOWN -2 /* -2 means not set yet */
/*
* This structure contains information that a SCSI interface controller
* needs to execute a SCSI command.
*/
typedef struct ScsiCmd {
struct pmax_scsi_device *sd; /* device requesting the command */
int unit; /* unit number passed to device done routine */
int flags; /* control flags for this command (see below) */
int buflen; /* length of the data buffer in bytes */
char *buf; /* pointer to data buffer for this command */
int cmdlen; /* length of data in cmdbuf */
u_char *cmd; /* buffer for the SCSI command */
int error; /* compatibility hack for new scsi */
} ScsiCmd;
/*
* Define flags for controlling the SCSI command.
*
* SCSICMD_DATA_TO_DEVICE
* TRUE -> data is to be transferred to the device.
* FALSE -> data is to be transferred from the device.
* meaningless if buflen is 0.
* SCSICMD_USE_SYNC
* Attempt to negotiate for a synchronous data transfer.
*/
#define SCSICMD_DATA_TO_DEVICE 0x01
#define SCSICMD_USE_SYNC 0x02
#ifdef _KERNEL
extern struct pmax_ctlr pmax_cinit[];
extern struct pmax_scsi_device scsi_dinit[];
/*
* Old-style pmax driver glue:
* Callbacks to add known a controller, and to configure all slaves on
* all known controllers.
*/
void pmax_add_scsi __P((struct pmax_driver *dp, int unit));
void configure_scsi __P((void));
#endif /* _KERNEL */
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