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