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/*
* Copyright (C) 2014 Michael Brown <mbrown@fensystems.co.uk>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
* You can also choose to distribute this program under the terms of
* the Unmodified Binary Distribution Licence (as given in the file
* COPYING.UBDL), provided that you have satisfied its requirements.
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <errno.h>
#include <ipxe/efi/efi.h>
#include <ipxe/efi/efi_driver.h>
#include <ipxe/efi/efi_snp.h>
#include "snpnet.h"
#include "nii.h"
/** @file
*
* SNP driver
*
*/
/**
* Check to see if driver supports a device
*
* @v device EFI device handle
* @ret rc Return status code
*/
static int snp_supported ( EFI_HANDLE device ) {
EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
EFI_STATUS efirc;
/* Check that this is not a device we are providing ourselves */
if ( find_snpdev ( device ) != NULL ) {
DBGCP ( device, "SNP %p %s is provided by this binary\n",
device, efi_handle_name ( device ) );
return -ENOTTY;
}
/* Test for presence of simple network protocol */
if ( ( efirc = bs->OpenProtocol ( device,
&efi_simple_network_protocol_guid,
NULL, efi_image_handle, device,
EFI_OPEN_PROTOCOL_TEST_PROTOCOL))!=0){
DBGCP ( device, "SNP %p %s is not an SNP device\n",
device, efi_handle_name ( device ) );
return -EEFI ( efirc );
}
DBGC ( device, "SNP %p %s is an SNP device\n",
device, efi_handle_name ( device ) );
return 0;
}
/**
* Check to see if driver supports a device
*
* @v device EFI device handle
* @ret rc Return status code
*/
static int nii_supported ( EFI_HANDLE device ) {
EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
EFI_STATUS efirc;
/* Check that this is not a device we are providing ourselves */
if ( find_snpdev ( device ) != NULL ) {
DBGCP ( device, "NII %p %s is provided by this binary\n",
device, efi_handle_name ( device ) );
return -ENOTTY;
}
/* Test for presence of NII protocol */
if ( ( efirc = bs->OpenProtocol ( device,
&efi_nii31_protocol_guid,
NULL, efi_image_handle, device,
EFI_OPEN_PROTOCOL_TEST_PROTOCOL))!=0){
DBGCP ( device, "NII %p %s is not an NII device\n",
device, efi_handle_name ( device ) );
return -EEFI ( efirc );
}
DBGC ( device, "NII %p %s is an NII device\n",
device, efi_handle_name ( device ) );
return 0;
}
/** EFI SNP driver */
struct efi_driver snp_driver __efi_driver ( EFI_DRIVER_NORMAL ) = {
.name = "SNP",
.supported = snp_supported,
.start = snpnet_start,
.stop = snpnet_stop,
};
/** EFI NII driver */
struct efi_driver nii_driver __efi_driver ( EFI_DRIVER_NORMAL ) = {
.name = "NII",
.supported = nii_supported,
.start = nii_start,
.stop = nii_stop,
};
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