tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (C) 2007, 2008, 2009 Siemens AG
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2
6 * as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
16 *
17 * Written by:
18 * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
19 */
20
21#ifndef WPAN_PHY_H
22#define WPAN_PHY_H
23
24#include <linux/netdevice.h>
25#include <linux/mutex.h>
26#include <linux/bug.h>
27
28/* According to the IEEE 802.15.4 stadard the upper most significant bits of
29 * the 32-bit channel bitmaps shall be used as an integer value to specify 32
30 * possible channel pages. The lower 27 bits of the channel bit map shall be
31 * used as a bit mask to specify channel numbers within a channel page.
32 */
33#define WPAN_NUM_CHANNELS 27
34#define WPAN_NUM_PAGES 32
35
36struct wpan_phy {
37 struct mutex pib_lock;
38
39 /*
40 * This is a PIB according to 802.15.4-2006.
41 * We do not provide timing-related variables, as they
42 * aren't used outside of driver
43 */
44 u8 current_channel;
45 u8 current_page;
46 u32 channels_supported[32];
47 u8 transmit_power;
48 u8 cca_mode;
49
50 struct device dev;
51 int idx;
52
53 struct net_device *(*add_iface)(struct wpan_phy *phy,
54 const char *name, int type);
55 void (*del_iface)(struct wpan_phy *phy, struct net_device *dev);
56
57 char priv[0] __attribute__((__aligned__(NETDEV_ALIGN)));
58};
59
60#define to_phy(_dev) container_of(_dev, struct wpan_phy, dev)
61
62struct wpan_phy *wpan_phy_alloc(size_t priv_size);
63static inline void wpan_phy_set_dev(struct wpan_phy *phy, struct device *dev)
64{
65 phy->dev.parent = dev;
66}
67int wpan_phy_register(struct wpan_phy *phy);
68void wpan_phy_unregister(struct wpan_phy *phy);
69void wpan_phy_free(struct wpan_phy *phy);
70/* Same semantics as for class_for_each_device */
71int wpan_phy_for_each(int (*fn)(struct wpan_phy *phy, void *data), void *data);
72
73static inline void *wpan_phy_priv(struct wpan_phy *phy)
74{
75 BUG_ON(!phy);
76 return &phy->priv;
77}
78
79struct wpan_phy *wpan_phy_find(const char *str);
80
81static inline void wpan_phy_put(struct wpan_phy *phy)
82{
83 put_device(&phy->dev);
84}
85
86static inline const char *wpan_phy_name(struct wpan_phy *phy)
87{
88 return dev_name(&phy->dev);
89}
90#endif