5f79d3a87b
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@167 a95241bf-73f2-0310-859d-f6bbb57e9c96
154 lines
5.2 KiB
C
154 lines
5.2 KiB
C
#ifndef _DRIVERS_DRIVERS_H
|
|
#define _DRIVERS_DRIVERS_H
|
|
|
|
#include <types.h>
|
|
#include <defines.h>
|
|
#include <sys/uio.h>
|
|
|
|
/* ---
|
|
these hooks are how the kernel accesses the device
|
|
--- */
|
|
|
|
struct selectsync;
|
|
typedef struct selectsync selectsync;
|
|
|
|
typedef status_t (*device_open_hook) (const char *name, uint32 flags, void **cookie);
|
|
typedef status_t (*device_close_hook) (void *cookie);
|
|
typedef status_t (*device_free_hook) (void *cookie);
|
|
typedef status_t (*device_control_hook) (void *cookie, uint32 op, void *data,
|
|
size_t len);
|
|
typedef ssize_t (*device_read_hook) (void *cookie, off_t position, void *data,
|
|
size_t *numBytes);
|
|
typedef ssize_t (*device_write_hook) (void *cookie, off_t position,
|
|
const void *data, size_t *numBytes);
|
|
typedef status_t (*device_select_hook) (void *cookie, uint8 event, uint32 ref,
|
|
selectsync *sync);
|
|
typedef status_t (*device_deselect_hook) (void *cookie, uint8 event,
|
|
selectsync *sync);
|
|
typedef status_t (*device_readv_hook) (void *cookie, off_t position, const iovec *vec,
|
|
size_t count, size_t *numBytes);
|
|
typedef status_t (*device_writev_hook) (void *cookie, off_t position, const iovec *vec,
|
|
size_t count, size_t *numBytes);
|
|
|
|
#define B_CUR_DRIVER_API_VERSION 2
|
|
|
|
/* ---
|
|
the device_hooks structure is a descriptor for the device, giving its
|
|
entry points.
|
|
--- */
|
|
|
|
typedef struct {
|
|
device_open_hook open; /* called to open the device */
|
|
device_close_hook close; /* called to close the device */
|
|
device_free_hook free; /* called to free the cookie */
|
|
device_control_hook control; /* called to control the device */
|
|
device_read_hook read; /* reads from the device */
|
|
device_write_hook write; /* writes to the device */
|
|
device_select_hook select; /* start select */
|
|
device_deselect_hook deselect; /* stop select */
|
|
device_readv_hook readv; /* scatter-gather read from the device */
|
|
device_writev_hook writev; /* scatter-gather write to the device */
|
|
} device_hooks;
|
|
|
|
status_t init_hardware(void);
|
|
const char **publish_devices(void);
|
|
device_hooks *find_device(const char *name);
|
|
status_t init_driver(void);
|
|
void uninit_driver(void);
|
|
|
|
extern int32 api_version;
|
|
|
|
enum {
|
|
// called on partition device to get info
|
|
IOCTL_DEVFS_GET_PARTITION_INFO = 1000,
|
|
// called on raw device to declare one partition
|
|
IOCTL_DEVFS_SET_PARTITION,
|
|
};
|
|
|
|
typedef struct devfs_partition_info {
|
|
// offset and size relative to raw device in bytes
|
|
off_t offset;
|
|
off_t size;
|
|
|
|
// logical block size in bytes
|
|
uint32 logical_block_size;
|
|
|
|
// session/partition id
|
|
uint32 session;
|
|
uint32 partition;
|
|
|
|
// path of raw device (GET_PARTITION_INFO only)
|
|
char raw_device[SYS_MAX_PATH_LEN];
|
|
} devfs_partition_info;
|
|
|
|
enum {
|
|
B_GET_DEVICE_SIZE = 1, /* get # bytes */
|
|
/* returns size_t in *data */
|
|
|
|
B_SET_DEVICE_SIZE, /* set # bytes */
|
|
/* passed size_t in *data */
|
|
|
|
B_SET_NONBLOCKING_IO, /* set to non-blocking i/o */
|
|
|
|
B_SET_BLOCKING_IO, /* set to blocking i/o */
|
|
|
|
B_GET_READ_STATUS, /* check if can read w/o blocking */
|
|
/* returns bool in *data */
|
|
|
|
B_GET_WRITE_STATUS, /* check if can write w/o blocking */
|
|
/* returns bool in *data */
|
|
|
|
B_GET_GEOMETRY, /* get info about device geometry */
|
|
/* returns struct geometry in *data */
|
|
|
|
B_GET_DRIVER_FOR_DEVICE, /* get the path of the executable serving that device */
|
|
|
|
B_GET_PARTITION_INFO, /* get info about a device partition */
|
|
/* returns struct partition_info in *data */
|
|
|
|
B_SET_PARTITION, /* create a user-defined partition */
|
|
|
|
B_FORMAT_DEVICE, /* low-level device format */
|
|
|
|
B_EJECT_DEVICE, /* eject the media if supported */
|
|
|
|
B_GET_ICON, /* return device icon (see struct below) */
|
|
|
|
B_GET_BIOS_GEOMETRY, /* get info about device geometry */
|
|
/* as reported by the bios */
|
|
/* returns struct geometry in *data */
|
|
|
|
B_GET_MEDIA_STATUS, /* get status of media. */
|
|
/* return status_t in *data: */
|
|
/* B_NO_ERROR: media ready */
|
|
/* B_DEV_NO_MEDIA: no media */
|
|
/* B_DEV_NOT_READY: device not ready */
|
|
/* B_DEV_MEDIA_CHANGED: media changed */
|
|
/* since open or last B_GET_MEDIA_STATUS */
|
|
/* B_DEV_MEDIA_CHANGE_REQUESTED: user */
|
|
/* pressed button on drive */
|
|
/* B_DEV_DOOR_OPEN: door open */
|
|
|
|
B_LOAD_MEDIA, /* load the media if supported */
|
|
|
|
B_GET_BIOS_DRIVE_ID, /* get bios id for this device */
|
|
|
|
B_SET_UNINTERRUPTABLE_IO, /* prevent cntl-C from interrupting i/o */
|
|
B_SET_INTERRUPTABLE_IO, /* allow cntl-C to interrupt i/o */
|
|
|
|
B_FLUSH_DRIVE_CACHE, /* flush drive cache */
|
|
|
|
B_GET_NEXT_OPEN_DEVICE = 1000, /* iterate through open devices */
|
|
B_ADD_FIXED_DRIVER, /* private */
|
|
B_REMOVE_FIXED_DRIVER, /* private */
|
|
|
|
B_AUDIO_DRIVER_BASE = 8000, /* base for codes in audio_driver.h */
|
|
B_MIDI_DRIVER_BASE = 8100, /* base for codes in midi_driver.h */
|
|
B_JOYSTICK_DRIVER_BASE = 8200, /* base for codes in joystick.h */
|
|
B_GRAPHIC_DRIVER_BASE = 8300, /* base for codes in graphic_driver.h */
|
|
|
|
B_DEVICE_OP_CODES_END = 9999 /* end of Be-defined contol id's */
|
|
};
|
|
|
|
#endif /* _DRIVERS_DRIVERS_H */
|