iPXE
edd.c
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1 /*
2  * Copyright (C) 2010 Michael Brown <mbrown@fensystems.co.uk>.
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License as
6  * published by the Free Software Foundation; either version 2 of the
7  * License, or any later version.
8  *
9  * This program is distributed in the hope that it will be useful, but
10  * WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17  * 02110-1301, USA.
18  *
19  * You can also choose to distribute this program under the terms of
20  * the Unmodified Binary Distribution Licence (as given in the file
21  * COPYING.UBDL), provided that you have satisfied its requirements.
22  */
23 
24 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
25 
26 #include <errno.h>
27 #include <ipxe/interface.h>
28 #include <ipxe/edd.h>
29 
30 /** @file
31  *
32  * Enhanced Disk Drive specification
33  *
34  */
35 
36 /**
37  * Describe a disk device using EDD
38  *
39  * @v intf Interface
40  * @v type EDD interface type
41  * @v path EDD device path
42  * @ret rc Return status code
43  */
44 int edd_describe ( struct interface *intf, struct edd_interface_type *type,
45  union edd_device_path *path ) {
46  struct interface *dest;
47  edd_describe_TYPE ( void * ) *op =
49  void *object = intf_object ( dest );
50  int rc;
51 
52  if ( op ) {
53  rc = op ( object, type, path );
54  } else {
55  /* Default is to not support this operation */
56  rc = -ENOTSUP;
57  }
58 
59  intf_put ( dest );
60  return rc;
61 }
struct arbelprm_rc_send_wqe rc
Definition: arbel.h:14
struct san_path path[0]
SAN paths.
Definition: sanboot.h:89
Error codes.
An EDD device path.
Definition: edd.h:98
uint8_t type
Type.
Definition: ena.h:16
#define edd_describe_TYPE(object_type)
Definition: edd.h:189
int edd_describe(struct interface *intf, struct edd_interface_type *type, union edd_device_path *path)
Describe a disk device using EDD.
Definition: edd.c:44
An EDD interface type.
Definition: edd.h:40
void * intf_object(struct interface *intf)
Get pointer to object containing object interface.
Definition: interface.c:154
#define ENOTSUP
Operation not supported.
Definition: errno.h:589
An object interface.
Definition: interface.h:109
Object interfaces.
static void * dest
Definition: strings.h:176
FILE_LICENCE(GPL2_OR_LATER_OR_UBDL)
static uint16_t struct vmbus_xfer_pages_operations * op
Definition: netvsc.h:327
void intf_put(struct interface *intf)
Decrement reference count on an object interface.
Definition: interface.c:144
Enhanced Disk Drive specification.
#define intf_get_dest_op(intf, type, dest)
Get object interface destination and operation method.
Definition: interface.h:214