diff options
author | Thomas Bushnell <thomas@gnu.org> | 1997-02-25 21:28:37 +0000 |
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committer | Thomas Bushnell <thomas@gnu.org> | 1997-02-25 21:28:37 +0000 |
commit | f07a4c844da9f0ecae5bbee1ab94be56505f26f7 (patch) | |
tree | 12b07c7e578fc1a5f53dbfde2632408491ff2a70 /device/conf.h |
Initial source
Diffstat (limited to 'device/conf.h')
-rw-r--r-- | device/conf.h | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/device/conf.h b/device/conf.h new file mode 100644 index 0000000..7ca5dd6 --- /dev/null +++ b/device/conf.h @@ -0,0 +1,114 @@ +/* + * 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> + +/* + * Operations list for major device types. + */ +struct dev_ops { + char * d_name; /* name for major device */ + int (*d_open)(); /* open device */ + int (*d_close)(); /* close device */ + int (*d_read)(); /* read */ + int (*d_write)(); /* write */ + int (*d_getstat)(); /* get status/control */ + int (*d_setstat)(); /* set status/control */ + vm_offset_t (*d_mmap)(); /* map memory */ + int (*d_async_in)();/* asynchronous input setup */ + int (*d_reset)(); /* reset device */ + int (*d_port_death)(); + /* 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(); /* no operation - OK */ +extern int nodev(); /* no operation - error */ +extern vm_offset_t nomap(); /* 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++) + +/* + * Exported routine to set indirection. + */ +extern void dev_set_indirect(); + +#endif /* _DEVICE_CONF_H_ */ + |