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 list_head list;
47 #define pio_txpacket_getindex(packet) ((int)((packet) - \
48 (packet)->queue->tx_packets_cache))
50 struct b43legacy_pioqueue {
51 struct b43legacy_wldev *dev;
56 bool need_workarounds; /* Workarounds needed for core.rev < 3 */
58 /* Adjusted size of the device internal TX buffer. */
60 /* Used octets of the device internal TX buffer. */
62 /* Used packet slots in the device internal TX buffer. */
64 /* Packets from the txfree list can
65 * be taken on incoming TX requests.
67 struct list_head txfree;
68 unsigned int nr_txfree;
69 /* Packets on the txqueue are queued,
70 * but not completely written to the chip, yet.
72 struct list_head txqueue;
73 /* Packets on the txrunning queue are completely
74 * posted to the device. We are waiting for the txstatus.
76 struct list_head txrunning;
77 /* Total number or packets sent.
78 * (This counter can obviously wrap).
80 unsigned int nr_tx_packets;
81 struct tasklet_struct txtask;
82 struct b43legacy_pio_txpacket
83 tx_packets_cache[B43legacy_PIO_MAXTXPACKETS];
87 u16 b43legacy_pio_read(struct b43legacy_pioqueue *queue,
90 return b43legacy_read16(queue->dev, queue->mmio_base + offset);
94 void b43legacy_pio_write(struct b43legacy_pioqueue *queue,
95 u16 offset, u16 value)
97 b43legacy_write16(queue->dev, queue->mmio_base + offset, value);
102 int b43legacy_pio_init(struct b43legacy_wldev *dev);
103 void b43legacy_pio_free(struct b43legacy_wldev *dev);
105 int b43legacy_pio_tx(struct b43legacy_wldev *dev,
106 struct sk_buff *skb);
107 void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev,
108 const struct b43legacy_txstatus *status);
109 void b43legacy_pio_get_tx_stats(struct b43legacy_wldev *dev,
110 struct ieee80211_tx_queue_stats *stats);
111 void b43legacy_pio_rx(struct b43legacy_pioqueue *queue);
113 /* Suspend TX queue in hardware. */
114 void b43legacy_pio_tx_suspend(struct b43legacy_pioqueue *queue);
115 void b43legacy_pio_tx_resume(struct b43legacy_pioqueue *queue);
116 /* Suspend (freeze) the TX tasklet (software level). */
117 void b43legacy_pio_freeze_txqueues(struct b43legacy_wldev *dev);
118 void b43legacy_pio_thaw_txqueues(struct b43legacy_wldev *dev);
120 #else /* CONFIG_B43LEGACY_PIO */
123 int b43legacy_pio_init(struct b43legacy_wldev *dev)
128 void b43legacy_pio_free(struct b43legacy_wldev *dev)
132 int b43legacy_pio_tx(struct b43legacy_wldev *dev,
138 void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev,
139 const struct b43legacy_txstatus *status)
143 void b43legacy_pio_get_tx_stats(struct b43legacy_wldev *dev,
144 struct ieee80211_tx_queue_stats *stats)
148 void b43legacy_pio_rx(struct b43legacy_pioqueue *queue)
152 void b43legacy_pio_tx_suspend(struct b43legacy_pioqueue *queue)
156 void b43legacy_pio_tx_resume(struct b43legacy_pioqueue *queue)
160 void b43legacy_pio_freeze_txqueues(struct b43legacy_wldev *dev)
164 void b43legacy_pio_thaw_txqueues(struct b43legacy_wldev *dev)
168 #endif /* CONFIG_B43LEGACY_PIO */
169 #endif /* B43legacy_PIO_H_ */