1
2#ifndef B43legacy_PIO_H_
3#define B43legacy_PIO_H_
4
5#include "b43legacy.h"
6
7#include <linux/interrupt.h>
8#include <linux/list.h>
9#include <linux/skbuff.h>
10
11
12#define B43legacy_PIO_TXCTL 0x00
13#define B43legacy_PIO_TXDATA 0x02
14#define B43legacy_PIO_TXQBUFSIZE 0x04
15#define B43legacy_PIO_RXCTL 0x08
16#define B43legacy_PIO_RXDATA 0x0A
17
18#define B43legacy_PIO_TXCTL_WRITELO (1 << 0)
19#define B43legacy_PIO_TXCTL_WRITEHI (1 << 1)
20#define B43legacy_PIO_TXCTL_COMPLETE (1 << 2)
21#define B43legacy_PIO_TXCTL_INIT (1 << 3)
22#define B43legacy_PIO_TXCTL_SUSPEND (1 << 7)
23
24#define B43legacy_PIO_RXCTL_DATAAVAILABLE (1 << 0)
25#define B43legacy_PIO_RXCTL_READY (1 << 1)
26
27
28#define B43legacy_PIO_MAXTXDEVQPACKETS 31
29#define B43legacy_PIO_TXQADJUST 80
30
31
32#define B43legacy_PIO_MAXTXPACKETS 256
33
34
35
36#ifdef CONFIG_B43LEGACY_PIO
37
38
39struct b43legacy_pioqueue;
40struct b43legacy_xmitstatus;
41
42struct b43legacy_pio_txpacket {
43 struct b43legacy_pioqueue *queue;
44 struct sk_buff *skb;
45 struct list_head list;
46};
47
48#define pio_txpacket_getindex(packet) ((int)((packet) - \
49 (packet)->queue->tx_packets_cache))
50
51struct b43legacy_pioqueue {
52 struct b43legacy_wldev *dev;
53 u16 mmio_base;
54
55 bool tx_suspended;
56 bool tx_frozen;
57 bool need_workarounds;
58
59
60 u16 tx_devq_size;
61
62 u16 tx_devq_used;
63
64 u8 tx_devq_packets;
65
66
67
68 struct list_head txfree;
69 unsigned int nr_txfree;
70
71
72
73 struct list_head txqueue;
74
75
76
77 struct list_head txrunning;
78 struct tasklet_struct txtask;
79 struct b43legacy_pio_txpacket
80 tx_packets_cache[B43legacy_PIO_MAXTXPACKETS];
81};
82
83static inline
84u16 b43legacy_pio_read(struct b43legacy_pioqueue *queue,
85 u16 offset)
86{
87 return b43legacy_read16(queue->dev, queue->mmio_base + offset);
88}
89
90static inline
91void b43legacy_pio_write(struct b43legacy_pioqueue *queue,
92 u16 offset, u16 value)
93{
94 b43legacy_write16(queue->dev, queue->mmio_base + offset, value);
95 mmiowb();
96}
97
98
99int b43legacy_pio_init(struct b43legacy_wldev *dev);
100void b43legacy_pio_free(struct b43legacy_wldev *dev);
101
102int b43legacy_pio_tx(struct b43legacy_wldev *dev,
103 struct sk_buff *skb);
104void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev,
105 const struct b43legacy_txstatus *status);
106void b43legacy_pio_rx(struct b43legacy_pioqueue *queue);
107
108
109void b43legacy_pio_tx_suspend(struct b43legacy_pioqueue *queue);
110void b43legacy_pio_tx_resume(struct b43legacy_pioqueue *queue);
111
112void b43legacy_pio_freeze_txqueues(struct b43legacy_wldev *dev);
113void b43legacy_pio_thaw_txqueues(struct b43legacy_wldev *dev);
114
115#else
116
117static inline
118int b43legacy_pio_init(struct b43legacy_wldev *dev)
119{
120 return 0;
121}
122static inline
123void b43legacy_pio_free(struct b43legacy_wldev *dev)
124{
125}
126static inline
127int b43legacy_pio_tx(struct b43legacy_wldev *dev,
128 struct sk_buff *skb)
129{
130 return 0;
131}
132static inline
133void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev,
134 const struct b43legacy_txstatus *status)
135{
136}
137static inline
138void b43legacy_pio_rx(struct b43legacy_pioqueue *queue)
139{
140}
141static inline
142void b43legacy_pio_tx_suspend(struct b43legacy_pioqueue *queue)
143{
144}
145static inline
146void b43legacy_pio_tx_resume(struct b43legacy_pioqueue *queue)
147{
148}
149static inline
150void b43legacy_pio_freeze_txqueues(struct b43legacy_wldev *dev)
151{
152}
153static inline
154void b43legacy_pio_thaw_txqueues(struct b43legacy_wldev *dev)
155{
156}
157
158#endif
159#endif
160