1 #ifndef B43legacy_PIO_H_
2 #define B43legacy_PIO_H_
6 #include <linux/interrupt.h>
7 #include <linux/list.h>
8 #include <linux/skbuff.h>
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
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)
23 #define B43legacy_PIO_RXCTL_DATAAVAILABLE (1 << 0)
24 #define B43legacy_PIO_RXCTL_READY (1 << 1)
27 #define B43legacy_PIO_MAXTXDEVQPACKETS 31
28 #define B43legacy_PIO_TXQADJUST 80
30 /* PIO tuning knobs */
31 #define B43legacy_PIO_MAXTXPACKETS 256
35 #ifdef CONFIG_B43LEGACY_PIO
38 struct b43legacy_pioqueue;
39 struct b43legacy_xmitstatus;
41 struct b43legacy_pio_txpacket {
42 struct b43legacy_pioqueue *queue;
44 struct ieee80211_tx_status txstat;
45 struct list_head list;
48 #define pio_txpacket_getindex(packet) ((int)((packet) - \
49 (packet)->queue->tx_packets_cache))
51 struct b43legacy_pioqueue {
52 struct b43legacy_wldev *dev;
57 bool need_workarounds; /* Workarounds needed for core.rev < 3 */
59 /* Adjusted size of the device internal TX buffer. */
61 /* Used octets of the device internal TX buffer. */
63 /* Used packet slots in the device internal TX buffer. */
65 /* Packets from the txfree list can
66 * be taken on incoming TX requests.
68 struct list_head txfree;
69 unsigned int nr_txfree;
70 /* Packets on the txqueue are queued,
71 * but not completely written to the chip, yet.
73 struct list_head txqueue;
74 /* Packets on the txrunning queue are completely
75 * posted to the device. We are waiting for the txstatus.
77 struct list_head txrunning;
78 /* Total number or packets sent.
79 * (This counter can obviously wrap).
81 unsigned int nr_tx_packets;
82 struct tasklet_struct txtask;
83 struct b43legacy_pio_txpacket
84 tx_packets_cache[B43legacy_PIO_MAXTXPACKETS];
88 u16 b43legacy_pio_read(struct b43legacy_pioqueue *queue,
91 return b43legacy_read16(queue->dev, queue->mmio_base + offset);
95 void b43legacy_pio_write(struct b43legacy_pioqueue *queue,
96 u16 offset, u16 value)
98 b43legacy_write16(queue->dev, queue->mmio_base + offset, value);
103 int b43legacy_pio_init(struct b43legacy_wldev *dev);
104 void b43legacy_pio_free(struct b43legacy_wldev *dev);
106 int b43legacy_pio_tx(struct b43legacy_wldev *dev,
108 struct ieee80211_tx_control *ctl);
109 void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev,
110 const struct b43legacy_txstatus *status);
111 void b43legacy_pio_get_tx_stats(struct b43legacy_wldev *dev,
112 struct ieee80211_tx_queue_stats *stats);
113 void b43legacy_pio_rx(struct b43legacy_pioqueue *queue);
115 /* Suspend TX queue in hardware. */
116 void b43legacy_pio_tx_suspend(struct b43legacy_pioqueue *queue);
117 void b43legacy_pio_tx_resume(struct b43legacy_pioqueue *queue);
118 /* Suspend (freeze) the TX tasklet (software level). */
119 void b43legacy_pio_freeze_txqueues(struct b43legacy_wldev *dev);
120 void b43legacy_pio_thaw_txqueues(struct b43legacy_wldev *dev);
122 #else /* CONFIG_B43LEGACY_PIO */
125 int b43legacy_pio_init(struct b43legacy_wldev *dev)
130 void b43legacy_pio_free(struct b43legacy_wldev *dev)
134 int b43legacy_pio_tx(struct b43legacy_wldev *dev,
136 struct ieee80211_tx_control *ctl)
141 void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev,
142 const struct b43legacy_txstatus *status)
146 void b43legacy_pio_get_tx_stats(struct b43legacy_wldev *dev,
147 struct ieee80211_tx_queue_stats *stats)
151 void b43legacy_pio_rx(struct b43legacy_pioqueue *queue)
155 void b43legacy_pio_tx_suspend(struct b43legacy_pioqueue *queue)
159 void b43legacy_pio_tx_resume(struct b43legacy_pioqueue *queue)
163 void b43legacy_pio_freeze_txqueues(struct b43legacy_wldev *dev)
167 void b43legacy_pio_thaw_txqueues(struct b43legacy_wldev *dev)
171 #endif /* CONFIG_B43LEGACY_PIO */
172 #endif /* B43legacy_PIO_H_ */