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Diffstat (limited to 'device/conf.h')
| -rw-r--r-- | device/conf.h | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/device/conf.h b/device/conf.h new file mode 100644 index 0000000..8177966 --- /dev/null +++ b/device/conf.h @@ -0,0 +1,127 @@ +/* + * 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> +#include <device/device_types.h> +#include <device/net_status.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, dev_flavor_t, dev_status_t, mach_msg_type_number_t *); /* get status/control */ + int (*d_setstat)(dev_t, dev_flavor_t, dev_status_t, mach_msg_type_number_t); /* set status/control */ + vm_offset_t (*d_mmap)(dev_t, vm_offset_t, vm_prot_t); /* map memory */ + int (*d_async_in)(dev_t, const ipc_port_t, int, filter_t*, unsigned int); /* asynchronous input setup */ + int (*d_reset)(dev_t); /* 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)(dev_t, int, int*); /* driver info for kernel */ +}; +typedef struct dev_ops *dev_ops_t; + +/* + * Routines for null entries. + */ +extern int nulldev_reset(dev_t dev); +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, dev_flavor_t flavor, dev_status_t data, mach_msg_type_number_t *count); +extern io_return_t nulldev_setstat(dev_t dev, dev_flavor_t flavor, dev_status_t data, mach_msg_type_number_t count); +extern io_return_t nulldev_portdeath(dev_t dev, mach_port_t port); +extern int nodev_async_in(dev_t, const ipc_port_t, int, filter_t*, unsigned int); /* no operation - error */ +extern int nodev_info(dev_t, int, int*); /* no operation - error */ +extern vm_offset_t 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_ */ + |