device.c File Reference

Device model. More...

#include <string.h>
#include <gpxe/list.h>
#include <gpxe/tables.h>
#include <gpxe/device.h>
#include <gpxe/init.h>

Go to the source code of this file.

Functions
	FILE_LICENCE (GPL2_OR_LATER)
static	LIST_HEAD (devices)
	Registered root devices.
static int	rootdev_probe (struct root_device *rootdev)
	Probe a root device.
static void	rootdev_remove (struct root_device *rootdev)
	Remove a root device.
static void	probe_devices (void)
	Probe all devices.
static void	remove_devices (int flags)
	Remove all devices.
struct startup_fn startup_devices	__startup_fn (STARTUP_NORMAL)

---

Detailed Description

Device model.

Definition in file device.c.

---

Function Documentation

FILE_LICENCE

(

GPL2_OR_LATER

)

static LIST_HEAD

(

devices

)

[static]

Registered root devices.

static int rootdev_probe

(

struct root_device *

rootdev

)

[static]

Probe a root device.

Parameters:

rootdev

Root device

Return values:

rc

Return status code

Definition at line 43 of file device.c.

References DBG, root_device::dev, root_device::driver, device::name, root_driver::probe, and strerror().

Referenced by probe_devices().

                                                         {
        int rc;

        DBG ( "Adding %s root bus\n", rootdev->dev.name );
        if ( ( rc = rootdev->driver->probe ( rootdev ) ) != 0 ) {
                DBG ( "Failed to add %s root bus: %s\n",
                      rootdev->dev.name, strerror ( rc ) );
                return rc;
        }

        return 0;
}

static void rootdev_remove

(

struct root_device *

rootdev

)

[static]

Remove a root device.

Parameters:

rootdev

Root device

Definition at line 61 of file device.c.

References DBG, root_device::dev, root_device::driver, device::name, and root_driver::remove.

Referenced by remove_devices().

                                                           {
        rootdev->driver->remove ( rootdev );
        DBG ( "Removed %s root bus\n", rootdev->dev.name );
}

static void probe_devices

(

void

)

[static]

Probe all devices.

This initiates probing for all devices in the system. After this call, the device hierarchy will be populated, and all hardware should be ready to use.

Definition at line 73 of file device.c.

References device::children, root_device::dev, for_each_table_entry, INIT_LIST_HEAD, list_add, list_del, ROOT_DEVICES, rootdev_probe(), and device::siblings.

                                   {
        struct root_device *rootdev;
        int rc;

        for_each_table_entry ( rootdev, ROOT_DEVICES ) {
                list_add ( &rootdev->dev.siblings, &devices );
                INIT_LIST_HEAD ( &rootdev->dev.children );
                if ( ( rc = rootdev_probe ( rootdev ) ) != 0 )
                        list_del ( &rootdev->dev.siblings );
        }
}

static void remove_devices

(

int

flags

)

[static]

Remove all devices.

Definition at line 89 of file device.c.

References DBG, root_device::dev, list_del, list_for_each_entry_safe, rootdev_remove(), SHUTDOWN_KEEP_DEVICES, and device::siblings.

                                         {
        struct root_device *rootdev;
        struct root_device *tmp;

        if ( flags & SHUTDOWN_KEEP_DEVICES ) {
                DBG ( "Refusing to remove devices on shutdown\n" );
                return;
        }

        list_for_each_entry_safe ( rootdev, tmp, &devices, dev.siblings ) {
                rootdev_remove ( rootdev );
                list_del ( &rootdev->dev.siblings );
        }
}

struct startup_fn startup_devices __startup_fn

(

STARTUP_NORMAL

)

[read]