6 #include <linux/list.h>
7 #include <linux/spinlock.h>
8 #include <linux/workqueue.h>
9 #include <linux/skbuff.h>
12 #define BCM43xx_PIO_TXCTL 0x00
13 #define BCM43xx_PIO_TXDATA 0x02
14 #define BCM43xx_PIO_TXQBUFSIZE 0x04
15 #define BCM43xx_PIO_RXCTL 0x08
16 #define BCM43xx_PIO_RXDATA 0x0A
18 #define BCM43xx_PIO_TXCTL_WRITEHI (1 << 0)
19 #define BCM43xx_PIO_TXCTL_WRITELO (1 << 1)
20 #define BCM43xx_PIO_TXCTL_COMPLETE (1 << 2)
21 #define BCM43xx_PIO_TXCTL_INIT (1 << 3)
22 #define BCM43xx_PIO_TXCTL_SUSPEND (1 << 7)
24 #define BCM43xx_PIO_RXCTL_DATAAVAILABLE (1 << 0)
25 #define BCM43xx_PIO_RXCTL_READY (1 << 1)
28 #define BCM43xx_PIO_MAXTXDEVQPACKETS 31
29 #define BCM43xx_PIO_TXQADJUST 80
31 /* PIO tuning knobs */
32 #define BCM43xx_PIO_MAXTXPACKETS 256
35 struct bcm43xx_pioqueue
;
36 struct bcm43xx_xmitstatus
;
38 struct bcm43xx_pio_txpacket
{
39 struct bcm43xx_pioqueue
*queue
;
40 struct ieee80211_txb
*txb
;
41 struct list_head list
;
47 #define pio_txpacket_getindex(packet) ((int)((packet) - (packet)->queue->__tx_packets_cache))
49 struct bcm43xx_pioqueue
{
50 struct bcm43xx_private
*bcm
;
55 /* Adjusted size of the device internal TX buffer. */
57 /* Used octets of the device internal TX buffer. */
59 /* Used packet slots in the device internal TX buffer. */
61 /* Packets from the txfree list can
62 * be taken on incoming TX requests.
64 struct list_head txfree
;
65 /* Packets on the txqueue are queued,
66 * but not completely written to the chip, yet.
68 struct list_head txqueue
;
69 /* Packets on the txrunning queue are completely
70 * posted to the device. We are waiting for the txstatus.
72 struct list_head txrunning
;
73 /* Locking of the TX queues and the accounting. */
75 struct work_struct txwork
;
76 struct bcm43xx_pio_txpacket __tx_packets_cache
[BCM43xx_PIO_MAXTXPACKETS
];
79 int bcm43xx_pio_init(struct bcm43xx_private
*bcm
);
80 void bcm43xx_pio_free(struct bcm43xx_private
*bcm
);
82 int FASTCALL(bcm43xx_pio_transfer_txb(struct bcm43xx_private
*bcm
,
83 struct ieee80211_txb
*txb
));
84 void FASTCALL(bcm43xx_pio_handle_xmitstatus(struct bcm43xx_private
*bcm
,
85 struct bcm43xx_xmitstatus
*status
));
87 void FASTCALL(bcm43xx_pio_rx(struct bcm43xx_pioqueue
*queue
));
88 #endif /* BCM43xx_PIO_H_ */