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#ifndef BCM43xx_PIO_H_
#define BCM43xx_PIO_H_
#include "bcm43xx.h"
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/workqueue.h>
#include <linux/skbuff.h>
#define BCM43xx_PIO_TXCTL 0x00
#define BCM43xx_PIO_TXDATA 0x02
#define BCM43xx_PIO_TXQBUFSIZE 0x04
#define BCM43xx_PIO_RXCTL 0x08
#define BCM43xx_PIO_RXDATA 0x0A
#define BCM43xx_PIO_TXCTL_WRITEHI (1 << 0)
#define BCM43xx_PIO_TXCTL_WRITELO (1 << 1)
#define BCM43xx_PIO_TXCTL_COMPLETE (1 << 2)
#define BCM43xx_PIO_TXCTL_INIT (1 << 3)
#define BCM43xx_PIO_TXCTL_SUSPEND (1 << 7)
#define BCM43xx_PIO_RXCTL_DATAAVAILABLE (1 << 0)
#define BCM43xx_PIO_RXCTL_READY (1 << 1)
/* PIO constants */
#define BCM43xx_PIO_MAXTXDEVQPACKETS 31
#define BCM43xx_PIO_TXQADJUST 80
/* PIO tuning knobs */
#define BCM43xx_PIO_MAXTXPACKETS 256
struct bcm43xx_pioqueue;
struct bcm43xx_xmitstatus;
struct bcm43xx_pio_txpacket {
struct bcm43xx_pioqueue *queue;
struct ieee80211_txb *txb;
struct list_head list;
u8 xmitted_frags;
u16 xmitted_octets;
};
#define pio_txpacket_getindex(packet) ((int)((packet) - (packet)->queue->__tx_packets_cache))
struct bcm43xx_pioqueue {
struct bcm43xx_private *bcm;
u16 mmio_base;
u8 tx_suspended:1;
/* Adjusted size of the device internal TX buffer. */
u16 tx_devq_size;
/* Used octets of the device internal TX buffer. */
u16 tx_devq_used;
/* Used packet slots in the device internal TX buffer. */
u8 tx_devq_packets;
/* Packets from the txfree list can
* be taken on incoming TX requests.
*/
struct list_head txfree;
/* Packets on the txqueue are queued,
* but not completely written to the chip, yet.
*/
struct list_head txqueue;
/* Packets on the txrunning queue are completely
* posted to the device. We are waiting for the txstatus.
*/
struct list_head txrunning;
/* Locking of the TX queues and the accounting. */
spinlock_t txlock;
struct work_struct txwork;
struct bcm43xx_pio_txpacket __tx_packets_cache[BCM43xx_PIO_MAXTXPACKETS];
};
int bcm43xx_pio_init(struct bcm43xx_private *bcm);
void bcm43xx_pio_free(struct bcm43xx_private *bcm);
int FASTCALL(bcm43xx_pio_transfer_txb(struct bcm43xx_private *bcm,
struct ieee80211_txb *txb));
void FASTCALL(bcm43xx_pio_handle_xmitstatus(struct bcm43xx_private *bcm,
struct bcm43xx_xmitstatus *status));
void FASTCALL(bcm43xx_pio_rx(struct bcm43xx_pioqueue *queue));
#endif /* BCM43xx_PIO_H_ */
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