1 /* -----------------------------------------------------------------------------
2 * Copyright (c) 2011 Ozmo Inc
3 * Released under the GNU General Public License Version 2 (GPLv2).
4 * -----------------------------------------------------------------------------
9 #include <linux/interrupt.h>
14 #define OZ_PD_S_IDLE 0x1
15 #define OZ_PD_S_CONNECTED 0x2
16 #define OZ_PD_S_SLEEP 0x4
17 #define OZ_PD_S_STOPPED 0x8
21 #define OZ_TIMER_TOUT 1
22 #define OZ_TIMER_HEARTBEAT 2
23 #define OZ_TIMER_STOP 3
25 /* Data structure that hold information on a frame for transmisson. This is
26 * built when the frame is first transmitted and is used to rebuild the frame
27 * if a re-transmission is required.
30 struct list_head link;
31 struct list_head elt_list;
37 struct oz_isoc_stream {
38 struct list_head link;
44 struct oz_hdr *oz_hdr;
48 struct list_head link;
55 /* Data structure that holds information on a specific peripheral device (PD).
58 struct list_head link;
60 u8 mac_addr[ETH_ALEN];
72 struct timespec last_rx_timestamp;
74 unsigned long pulse_time;
75 unsigned long pulse_period;
76 unsigned long presleep;
77 unsigned long keep_alive;
78 struct oz_elt_buf elt_buff;
79 void *app_ctx[OZ_APPID_MAX];
80 spinlock_t app_lock[OZ_APPID_MAX];
84 unsigned isoc_latency;
85 unsigned max_stream_buffering;
87 int nb_queued_isoc_frames;
88 struct list_head *tx_pool;
90 spinlock_t tx_frame_lock;
91 struct list_head *last_sent_frame;
92 struct list_head tx_queue;
93 struct list_head farewell_list;
94 spinlock_t stream_lock;
95 struct list_head stream_list;
96 struct net_device *net_dev;
97 struct hrtimer heartbeat;
98 struct hrtimer timeout;
100 struct tasklet_struct heartbeat_tasklet;
101 struct tasklet_struct timeout_tasklet;
102 struct work_struct workitem;
105 #define OZ_MAX_QUEUED_FRAMES 4
107 struct oz_pd *oz_pd_alloc(const u8 *mac_addr);
108 void oz_pd_destroy(struct oz_pd *pd);
109 void oz_pd_get(struct oz_pd *pd);
110 void oz_pd_put(struct oz_pd *pd);
111 void oz_pd_set_state(struct oz_pd *pd, unsigned state);
112 void oz_pd_indicate_farewells(struct oz_pd *pd);
113 int oz_pd_sleep(struct oz_pd *pd);
114 void oz_pd_stop(struct oz_pd *pd);
115 void oz_pd_heartbeat(struct oz_pd *pd, u16 apps);
116 int oz_services_start(struct oz_pd *pd, u16 apps, int resume);
117 void oz_services_stop(struct oz_pd *pd, u16 apps, int pause);
118 int oz_prepare_frame(struct oz_pd *pd, int empty);
119 void oz_send_queued_frames(struct oz_pd *pd, int backlog);
120 void oz_retire_tx_frames(struct oz_pd *pd, u8 lpn);
121 int oz_isoc_stream_create(struct oz_pd *pd, u8 ep_num);
122 int oz_isoc_stream_delete(struct oz_pd *pd, u8 ep_num);
123 int oz_send_isoc_unit(struct oz_pd *pd, u8 ep_num, const u8 *data, int len);
124 void oz_handle_app_elt(struct oz_pd *pd, u8 app_id, struct oz_elt *elt);
125 void oz_apps_init(void);
126 void oz_apps_term(void);