86 lines
2.2 KiB
C
86 lines
2.2 KiB
C
/*
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* Copyright 2004-2005, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _KERNEL_DEVICE_MANAGER_H
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#define _KERNEL_DEVICE_MANAGER_H
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#include <SupportDefs.h>
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#include <device_manager.h>
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#include <util/list.h>
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typedef struct device_node_info device_node_info;
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// info about a device node
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struct device_node_info {
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struct list_link siblings;
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device_node_info *parent;
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struct list children;
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int32 ref_count;
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driver_module_info *driver;
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void *cookie;
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bool registered; // true, if device is officially existent
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bool blocked_by_rescan; // true, if device is blocked because of rescan
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int32 num_waiting_hooks; // number of waiting hook calls
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sem_id hook_sem; // sem for waiting hook calls
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int32 load_block_count; // load-block nest count
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int32 num_blocked_loads; // number of waiting load calls
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sem_id load_block_sem; // sem for waiting load calls
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int32 load_count; // # of finished load_driver() calls
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int32 loading; // # of active (un)load_driver() calls
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uint32 rescan_depth; // > 0 if scanning is active
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struct device_attr_info *attributes; // list of attributes
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uint32 num_io_resources; // number of I/O resources
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io_resource_handle *io_resources; // array of I/O resource (NULL-terminated)
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bool automatically_loaded; // loaded automatically because PNP_DRIVER_ALWAYS_LOADED
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uint32 internal_id; // internal identifier
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};
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struct kernel_args;
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern status_t probe_for_device_type(const char *type);
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extern status_t device_manager_init(struct kernel_args *args);
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extern status_t device_manager_init_post_modules(struct kernel_args *args);
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// temporary/optional device manager syscall API
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#define DEVICE_MANAGER_SYSCALLS "device_manager"
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#define DM_GET_ROOT 1
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#define DM_GET_CHILD 2
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#define DM_GET_NEXT_CHILD 3
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#define DM_GET_NEXT_ATTRIBUTE 4
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struct dev_attr {
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uint32 node_cookie;
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uint32 cookie;
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char name[255];
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type_code type;
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union {
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uint8 ui8;
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uint16 ui16;
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uint32 ui32;
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uint64 ui64;
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char string[255];
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struct {
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void *data;
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size_t length;
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} raw;
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} value;
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};
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#ifdef __cplusplus
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}
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#endif
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#endif /* _KRENEL_DEVICE_MANAGER_H */
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