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- /*
- * Mach Operating System
- * Copyright (c) 1993,1991,1990,1989 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.
- */
- /*
- * Author: David B. Golub, Carnegie Mellon University
- * Date: 8/88
- */
- #ifndef _DEVICE_CONF_H_
- #define _DEVICE_CONF_H_
- #include <mach/machine/vm_types.h>
- #include <sys/types.h>
- #include <mach/port.h>
- #include <mach/vm_prot.h>
- struct io_req;
- typedef struct io_req *io_req_t;
- typedef int io_return_t;
- /*
- * Operations list for major device types.
- */
- struct dev_ops {
- char * d_name; /* name for major device */
- int (*d_open)(dev_t, int, io_req_t);/* open device */
- void (*d_close)(dev_t, int); /* close device */
- int (*d_read)(dev_t, io_req_t); /* read */
- int (*d_write)(dev_t, io_req_t); /* write */
- int (*d_getstat)(dev_t, int, int *, natural_t *); /* get status/control */
- int (*d_setstat)(dev_t, int, int *, natural_t); /* set status/control */
- int (*d_mmap)(dev_t, vm_offset_t, vm_prot_t); /* map memory */
- int (*d_async_in)(); /* asynchronous input setup */
- int (*d_reset)(); /* reset device */
- int (*d_port_death)(dev_t, mach_port_t);
- /* clean up reply ports */
- int d_subdev; /* number of sub-devices per
- unit */
- int (*d_dev_info)(); /* driver info for kernel */
- };
- typedef struct dev_ops *dev_ops_t;
- /*
- * Routines for null entries.
- */
- extern int nulldev(void); /* no operation - OK */
- extern int nulldev_open(dev_t dev, int flag, io_req_t ior);
- extern void nulldev_close(dev_t dev, int flags);
- extern int nulldev_read(dev_t dev, io_req_t ior);
- extern int nulldev_write(dev_t dev, io_req_t ior);
- extern io_return_t nulldev_getstat(dev_t dev, int flavor, int *data, natural_t *count);
- extern io_return_t nulldev_setstat(dev_t dev, int flavor, int *data, natural_t count);
- extern io_return_t nulldev_portdeath(dev_t dev, mach_port_t port);
- extern int nodev(void); /* no operation - error */
- extern int nomap(dev_t dev, vm_offset_t off, int prot); /* no operation - error */
- /*
- * Flavor constants for d_dev_info routine
- */
- #define D_INFO_BLOCK_SIZE 1
- /*
- * Head of list of attached devices
- */
- extern struct dev_ops dev_name_list[];
- extern int dev_name_count;
- /*
- * Macro to search device list
- */
- #define dev_search(dp) \
- for (dp = dev_name_list; \
- dp < &dev_name_list[dev_name_count]; \
- dp++)
- /*
- * Indirection vectors for certain devices.
- */
- struct dev_indirect {
- char * d_name; /* name for device */
- dev_ops_t d_ops; /* operations (major device) */
- int d_unit; /* and unit number */
- };
- typedef struct dev_indirect *dev_indirect_t;
- /*
- * List of indirect devices.
- */
- extern struct dev_indirect dev_indirect_list[];
- extern int dev_indirect_count;
- /*
- * Macro to search indirect list
- */
- #define dev_indirect_search(di) \
- for (di = dev_indirect_list; \
- di < &dev_indirect_list[dev_indirect_count]; \
- di++)
- #endif /* _DEVICE_CONF_H_ */
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