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wpan-phy.h
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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 <[email protected]>
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 
36 struct 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  */
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 
62 struct wpan_phy *wpan_phy_alloc(size_t priv_size);
63 static inline void wpan_phy_set_dev(struct wpan_phy *phy, struct device *dev)
64 {
65  phy->dev.parent = dev;
66 }
67 int wpan_phy_register(struct wpan_phy *phy);
68 void wpan_phy_unregister(struct wpan_phy *phy);
69 void wpan_phy_free(struct wpan_phy *phy);
70 /* Same semantics as for class_for_each_device */
71 int wpan_phy_for_each(int (*fn)(struct wpan_phy *phy, void *data), void *data);
72 
73 static inline void *wpan_phy_priv(struct wpan_phy *phy)
74 {
75  BUG_ON(!phy);
76  return &phy->priv;
77 }
78 
79 struct wpan_phy *wpan_phy_find(const char *str);
80 
81 static inline void wpan_phy_put(struct wpan_phy *phy)
82 {
83  put_device(&phy->dev);
84 }
85 
86 static inline const char *wpan_phy_name(struct wpan_phy *phy)
87 {
88  return dev_name(&phy->dev);
89 }
90 #endif