undionly.c File Reference

"Pure" UNDI driver More...

#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <gpxe/device.h>
#include <gpxe/init.h>
#include <undi.h>
#include <undinet.h>
#include <undipreload.h>

Go to the source code of this file.

Functions
	FILE_LICENCE (GPL2_OR_LATER)
static int	undibus_probe (struct root_device *rootdev)
	Probe UNDI root bus.
static void	undibus_remove (struct root_device *rootdev __unused)
	Remove UNDI root bus.
static void	undionly_shutdown (int flags)
	Prepare for exit.
struct startup_fn startup_undionly	__startup_fn (STARTUP_LATE)
Variables
static struct root_driver	undi_root_driver
	UNDI bus root device driver.
struct root_device undi_root_device	__root_device
	UNDI bus root device.

---

Detailed Description

"Pure" UNDI driver

This is the UNDI driver without explicit support for PCI or any other bus type. It is capable only of using the preloaded UNDI device. It must not be combined in an image with any other drivers.

If you want a PXE-loadable image that contains only the UNDI driver, build "bin/undionly.kpxe".

If you want any other image format, or any other drivers in addition to the UNDI driver, build e.g. "bin/undi.dsk".

Definition in file undionly.c.

---

Function Documentation

FILE_LICENCE

(

GPL2_OR_LATER

)

static int undibus_probe

(

struct root_device *

rootdev

)

[static]

Probe UNDI root bus.

Parameters:

rootdev

UNDI bus root device

Scans the UNDI bus for devices and registers all devices it can find.

Definition at line 54 of file undionly.c.

References device_description::bus_type, BUS_TYPE_ISAPNP, BUS_TYPE_PCI, device::children, DBG, device::desc, root_device::dev, undi_device::dev, device_description::device, ENODEV, undi_device::entry, INIT_LIST_HEAD, undi_device::isapnp_csn, list_add, list_del, device_description::location, device::name, device::parent, undi_device::pci_busdevfn, undi_device::pci_device, undi_device::pci_vendor, preloaded_undi, s_SEGOFF16::segment, device::siblings, strncpy(), UNDI_NO_ISAPNP_CSN, UNDI_NO_PCI_BUSDEVFN, undinet_probe(), and device_description::vendor.

                                                         {
        struct undi_device *undi = &preloaded_undi;
        int rc;

        /* Check for a valie preloaded UNDI device */
        if ( ! undi->entry.segment ) {
                DBG ( "No preloaded UNDI device found!\n" );
                return -ENODEV;
        }

        /* Add to device hierarchy */
        strncpy ( undi->dev.name, "UNDI",
                  ( sizeof ( undi->dev.name ) - 1 ) );
        if ( undi->pci_busdevfn != UNDI_NO_PCI_BUSDEVFN ) {
                undi->dev.desc.bus_type = BUS_TYPE_PCI;
                undi->dev.desc.location = undi->pci_busdevfn;
                undi->dev.desc.vendor = undi->pci_vendor;
                undi->dev.desc.device = undi->pci_device;
        } else if ( undi->isapnp_csn != UNDI_NO_ISAPNP_CSN ) {
                undi->dev.desc.bus_type = BUS_TYPE_ISAPNP;
        }
        undi->dev.parent = &rootdev->dev;
        list_add ( &undi->dev.siblings, &rootdev->dev.children);
        INIT_LIST_HEAD ( &undi->dev.children );

        /* Create network device */
        if ( ( rc = undinet_probe ( undi ) ) != 0 )
                goto err;

        return 0;

 err:
        list_del ( &undi->dev.siblings );
        return rc;
}

static void undibus_remove

(

struct root_device *rootdev

__unused

)

[static]

Remove UNDI root bus.

Parameters:

rootdev

UNDI bus root device

Definition at line 95 of file undionly.c.

References undi_device::dev, list_del, preloaded_undi, device::siblings, and undinet_remove().

                                                                    {
        struct undi_device *undi = &preloaded_undi;

        undinet_remove ( undi );
        list_del ( &undi->dev.siblings );
}

static void undionly_shutdown

(

int

flags

)

[static]

Prepare for exit.

Parameters:

flags

Shutdown flags

Definition at line 119 of file undionly.c.

References preloaded_undi, SHUTDOWN_BOOT, and UNDI_FL_KEEP_ALL.

                                            {
        /* If we are shutting down to boot an OS, clear the "keep PXE
         * stack" flag.
         */
        if ( flags & SHUTDOWN_BOOT )
                preloaded_undi.flags &= ~UNDI_FL_KEEP_ALL;
}

struct startup_fn startup_undionly __startup_fn

(

STARTUP_LATE

)

[read]

---

Variable Documentation

struct root_driver undi_root_driver [static]

Initial value:

 {
        .probe = undibus_probe,
        .remove = undibus_remove,
}

UNDI bus root device driver.

Definition at line 103 of file undionly.c.

struct root_device undi_root_device __root_device

Initial value:

 {
        .dev = { .name = "UNDI" },
        .driver = &undi_root_driver,
}

UNDI bus root device.

Definition at line 109 of file undionly.c.