undi.c File Reference

UNDI PCI driver. More...

#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <gpxe/pci.h>
#include <undi.h>
#include <undirom.h>
#include <undiload.h>
#include <undinet.h>
#include <undipreload.h>

Go to the source code of this file.

Functions
	FILE_LICENCE (GPL2_OR_LATER)
static struct undi_rom *	undipci_find_rom (struct pci_device *pci)
	Find UNDI ROM for PCI device.
static int	undipci_probe (struct pci_device *pci, const struct pci_device_id *id __unused)
	Probe PCI device.
static void	undipci_remove (struct pci_device *pci)
	Remove PCI device.
Variables
static struct pci_device_id	undipci_nics []
struct pci_driver undipci_driver	__pci_driver

---

Detailed Description

UNDI PCI driver.

Definition in file undi.c.

---

Function Documentation

FILE_LICENCE

(

GPL2_OR_LATER

)

static struct undi_rom* undipci_find_rom

(

struct pci_device *

pci

)

[static, read]

Find UNDI ROM for PCI device.

Parameters:

pci

PCI device

Return values:

undirom

UNDI ROM, or NULL

Try to find a driver for this device. Try an exact match on the ROM address first, then fall back to a vendor/device ID match only

Definition at line 47 of file undi.c.

References pci_device::device, pci_bar_start(), PCI_ROM_ADDRESS, undirom_find_pci(), and pci_device::vendor.

Referenced by undipci_probe().

                                                                     {
        struct undi_rom *undirom;
        unsigned long rombase;
        
        rombase = pci_bar_start ( pci, PCI_ROM_ADDRESS );
        undirom = undirom_find_pci ( pci->vendor, pci->device, rombase );
        if ( ! undirom )
                undirom = undirom_find_pci ( pci->vendor, pci->device, 0 );
        return undirom;
}

static int undipci_probe	(	struct pci_device *	pci,
		const struct pci_device_id *id	__unused
	)			[static]

Probe PCI device.

Parameters:

	pci	PCI device
	id	PCI ID

Return values:

rc

Return status code

Definition at line 65 of file undi.c.

References pci_device::bus, device::children, pci_device::class, DBGC, device::desc, pci_device::dev, undi_device::dev, pci_device::devfn, ENODEV, ENOMEM, ENOTTY, free(), INIT_LIST_HEAD, list_add, list_del, memcpy, memset(), device::name, NULL, device::parent, PCI_BASE_CLASS, PCI_BASE_CLASS_NETWORK, PCI_BUSDEVFN, pci_set_drvdata(), preloaded_undi, device::siblings, snprintf(), undi_load_pci(), undi_unload(), undinet_probe(), undipci_find_rom(), and zalloc().

                                                                     {
        struct undi_device *undi;
        struct undi_rom *undirom;
        unsigned int busdevfn = PCI_BUSDEVFN ( pci->bus, pci->devfn );
        int rc;

        /* Ignore non-network devices */
        if ( PCI_BASE_CLASS ( pci->class ) != PCI_BASE_CLASS_NETWORK )
                return -ENOTTY;

        /* Allocate UNDI device structure */
        undi = zalloc ( sizeof ( *undi ) );
        if ( ! undi )
                return -ENOMEM;
        pci_set_drvdata ( pci, undi );

        /* Find/create our pixie */
        if ( preloaded_undi.pci_busdevfn == busdevfn ) {
                /* Claim preloaded UNDI device */
                DBGC ( undi, "UNDI %p using preloaded UNDI device\n", undi );
                memcpy ( undi, &preloaded_undi, sizeof ( *undi ) );
                memset ( &preloaded_undi, 0, sizeof ( preloaded_undi ) );
        } else {
                /* Find UNDI ROM for PCI device */
                if ( ! ( undirom = undipci_find_rom ( pci ) ) ) {
                        rc = -ENODEV;
                        goto err_find_rom;
                }

                /* Call UNDI ROM loader to create pixie */
                if ( ( rc = undi_load_pci ( undi, undirom, busdevfn ) ) != 0 )
                        goto err_load_pci;
        }

        /* Add to device hierarchy */
        snprintf ( undi->dev.name, sizeof ( undi->dev.name ),
                   "UNDI-%s", pci->dev.name );
        memcpy ( &undi->dev.desc, &pci->dev.desc, sizeof ( undi->dev.desc ) );
        undi->dev.parent = &pci->dev;
        INIT_LIST_HEAD ( &undi->dev.children );
        list_add ( &undi->dev.siblings, &pci->dev.children );

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

 err_undinet_probe:
        undi_unload ( undi );
        list_del ( &undi->dev.siblings );
 err_find_rom:
 err_load_pci:
        free ( undi );
        pci_set_drvdata ( pci, NULL );
        return rc;
}

static void undipci_remove

(

struct pci_device *

pci

)

[static]

Remove PCI device.

Parameters:

pci

PCI device

Definition at line 129 of file undi.c.

References undi_device::dev, free(), list_del, NULL, pci_get_drvdata(), pci_set_drvdata(), device::siblings, undi_unload(), and undinet_remove().

                                                      {
        struct undi_device *undi = pci_get_drvdata ( pci );

        undinet_remove ( undi );
        undi_unload ( undi );
        list_del ( &undi->dev.siblings );
        free ( undi );
        pci_set_drvdata ( pci, NULL );
}

---

Variable Documentation

struct pci_device_id undipci_nics[] [static]

Initial value:

 {
PCI_ROM ( 0xffff, 0xffff, "undipci", "UNDI (PCI)", 0 ),
}

Definition at line 139 of file undi.c.

struct pci_driver undipci_driver __pci_driver

Initial value:

 {
        .ids = undipci_nics,
        .id_count = ( sizeof ( undipci_nics ) / sizeof ( undipci_nics[0] ) ),
        .probe = undipci_probe,
        .remove = undipci_remove,
}

Definition at line 143 of file undi.c.