drvmgr.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <drvmgr/drvmgr.h>
#include <drvmgr/drvmgr_confdefs.h>
#include "drvmgr_internal.h"

Include dependency graph for drvmgr.c:

Macros
#define	DBG(x...)

Functions
void	_DRV_Manager_init_level (int level)
	Take all devices into init level 'level', all devices registered later will directly be taken into this level as well, ensuring that all registerd devices has been taken into the level.
void	_DRV_Manager_initialization (void)
	Initialize data structures of the driver management system. More...
void	drvmgr_init_update (void)
int	drvmgr_root_drv_register (struct drvmgr_drv *drv)
	Register Root Bus device driver.
int	drvmgr_drv_register (struct drvmgr_drv *drv)
	Register a driver.
int	drvmgr_dev_register (struct drvmgr_dev *dev)
	Register a device.
int	drvmgr_bus_register (struct drvmgr_bus *bus)
	Register a bus.
int	drvmgr_alloc_dev (struct drvmgr_dev **pdev, int extra)
	Allocate a device structure, if no memory available rtems_error_fatal_occurred is called. More...
int	drvmgr_alloc_bus (struct drvmgr_bus **pbus, int extra)
	Allocate a bus structure, if no memory available rtems_error_fatal_occurred is called. More...
void	drvmgr_bus_res_add (struct drvmgr_bus *bus, struct drvmgr_bus_res *bres)
	Add resources to a bus, typically used by a bus driver. More...

Variables
struct drvmgr	drvmgr

Function Documentation

_DRV_Manager_initialization()

void _DRV_Manager_initialization

(

void

)

Initialize data structures of the driver management system.

Calls predefined register driver functions so that drivers can register themselves.

Referenced by drvmgr_init(), and rtems_initialize_before_drivers().

drvmgr_alloc_bus()

int drvmgr_alloc_bus	(	struct drvmgr_bus **	pbus,
		int	extra
	)

Allocate a bus structure, if no memory available rtems_error_fatal_occurred is called.

The 'extra' argment tells how many bytes extra space is to be allocated after the device structure, this is typically used for "businfo" structures. The extra space is always aligned to a 4-byte boundary.

drvmgr_alloc_dev()

int drvmgr_alloc_dev	(	struct drvmgr_dev **	pdev,
		int	extra
	)

Allocate a device structure, if no memory available rtems_error_fatal_occurred is called.

The 'extra' argment tells how many bytes extra space is to be allocated after the device structure, this is typically used for "businfo" structures. The extra space is always aligned to a 4-byte boundary.

drvmgr_bus_res_add()

void drvmgr_bus_res_add	(	struct drvmgr_bus *	bus,
		struct drvmgr_bus_res *	bres
	)

Add resources to a bus, typically used by a bus driver.

Parameters

bus	The Bus to add the resources to.
res	An array with Driver resources, all together are called bus resources.

References drvmgr_bus_res::next, and drvmgr_bus::reslist.

Variable Documentation

drvmgr

struct drvmgr drvmgr

Initial value:

= {
        .level =                0,
        .initializing_objs =    0,
        .lock =                 0,
        .root_dev =             {0},
        .root_drv =             NULL,

        .drivers =      LIST_INITIALIZER(struct drvmgr_drv, next),

        .buses = {
                LIST_INITIALIZER(struct drvmgr_bus, next),
                LIST_INITIALIZER(struct drvmgr_bus, next),
                LIST_INITIALIZER(struct drvmgr_bus, next),
                LIST_INITIALIZER(struct drvmgr_bus, next),
                LIST_INITIALIZER(struct drvmgr_bus, next),
        },
        .buses_inactive =       LIST_INITIALIZER(struct drvmgr_bus, next),

        .devices = {
                LIST_INITIALIZER(struct drvmgr_dev, next),
                LIST_INITIALIZER(struct drvmgr_dev, next),
                LIST_INITIALIZER(struct drvmgr_dev, next),
                LIST_INITIALIZER(struct drvmgr_dev, next),
                LIST_INITIALIZER(struct drvmgr_dev, next),
        },
        .devices_inactive =     LIST_INITIALIZER(struct drvmgr_dev, next),
}