153 lines
3.8 KiB
C
153 lines
3.8 KiB
C
#ifndef B43_PIO_H_
|
|
#define B43_PIO_H_
|
|
|
|
#include "b43.h"
|
|
|
|
#include <linux/interrupt.h>
|
|
#include <linux/list.h>
|
|
#include <linux/skbuff.h>
|
|
|
|
#define B43_PIO_TXCTL 0x00
|
|
#define B43_PIO_TXDATA 0x02
|
|
#define B43_PIO_TXQBUFSIZE 0x04
|
|
#define B43_PIO_RXCTL 0x08
|
|
#define B43_PIO_RXDATA 0x0A
|
|
|
|
#define B43_PIO_TXCTL_WRITELO (1 << 0)
|
|
#define B43_PIO_TXCTL_WRITEHI (1 << 1)
|
|
#define B43_PIO_TXCTL_COMPLETE (1 << 2)
|
|
#define B43_PIO_TXCTL_INIT (1 << 3)
|
|
#define B43_PIO_TXCTL_SUSPEND (1 << 7)
|
|
|
|
#define B43_PIO_RXCTL_DATAAVAILABLE (1 << 0)
|
|
#define B43_PIO_RXCTL_READY (1 << 1)
|
|
|
|
/* PIO constants */
|
|
#define B43_PIO_MAXTXDEVQPACKETS 31
|
|
#define B43_PIO_TXQADJUST 80
|
|
|
|
/* PIO tuning knobs */
|
|
#define B43_PIO_MAXTXPACKETS 256
|
|
|
|
#ifdef CONFIG_B43_PIO
|
|
|
|
struct b43_pioqueue;
|
|
struct b43_xmitstatus;
|
|
|
|
struct b43_pio_txpacket {
|
|
struct b43_pioqueue *queue;
|
|
struct sk_buff *skb;
|
|
struct ieee80211_tx_status txstat;
|
|
struct list_head list;
|
|
u16 index; /* Index in the tx_packets_cache */
|
|
};
|
|
|
|
struct b43_pioqueue {
|
|
struct b43_wldev *dev;
|
|
u16 mmio_base;
|
|
|
|
bool tx_suspended;
|
|
bool tx_frozen;
|
|
bool need_workarounds; /* Workarounds needed for core.rev < 3 */
|
|
|
|
/* 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;
|
|
unsigned int nr_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;
|
|
/* Total number or packets sent.
|
|
* (This counter can obviously wrap).
|
|
*/
|
|
unsigned int nr_tx_packets;
|
|
struct tasklet_struct txtask;
|
|
struct b43_pio_txpacket tx_packets_cache[B43_PIO_MAXTXPACKETS];
|
|
};
|
|
|
|
static inline u16 b43_pio_read(struct b43_pioqueue *queue, u16 offset)
|
|
{
|
|
return b43_read16(queue->dev, queue->mmio_base + offset);
|
|
}
|
|
|
|
static inline
|
|
void b43_pio_write(struct b43_pioqueue *queue, u16 offset, u16 value)
|
|
{
|
|
b43_write16(queue->dev, queue->mmio_base + offset, value);
|
|
mmiowb();
|
|
}
|
|
|
|
int b43_pio_init(struct b43_wldev *dev);
|
|
void b43_pio_free(struct b43_wldev *dev);
|
|
|
|
int b43_pio_tx(struct b43_wldev *dev,
|
|
struct sk_buff *skb, struct ieee80211_tx_control *ctl);
|
|
void b43_pio_handle_txstatus(struct b43_wldev *dev,
|
|
const struct b43_txstatus *status);
|
|
void b43_pio_get_tx_stats(struct b43_wldev *dev,
|
|
struct ieee80211_tx_queue_stats *stats);
|
|
void b43_pio_rx(struct b43_pioqueue *queue);
|
|
|
|
/* Suspend TX queue in hardware. */
|
|
void b43_pio_tx_suspend(struct b43_pioqueue *queue);
|
|
void b43_pio_tx_resume(struct b43_pioqueue *queue);
|
|
/* Suspend (freeze) the TX tasklet (software level). */
|
|
void b43_pio_freeze_txqueues(struct b43_wldev *dev);
|
|
void b43_pio_thaw_txqueues(struct b43_wldev *dev);
|
|
|
|
#else /* CONFIG_B43_PIO */
|
|
|
|
static inline int b43_pio_init(struct b43_wldev *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void b43_pio_free(struct b43_wldev *dev)
|
|
{
|
|
}
|
|
static inline
|
|
int b43_pio_tx(struct b43_wldev *dev,
|
|
struct sk_buff *skb, struct ieee80211_tx_control *ctl)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline
|
|
void b43_pio_handle_txstatus(struct b43_wldev *dev,
|
|
const struct b43_txstatus *status)
|
|
{
|
|
}
|
|
static inline
|
|
void b43_pio_get_tx_stats(struct b43_wldev *dev,
|
|
struct ieee80211_tx_queue_stats *stats)
|
|
{
|
|
}
|
|
static inline void b43_pio_rx(struct b43_pioqueue *queue)
|
|
{
|
|
}
|
|
static inline void b43_pio_tx_suspend(struct b43_pioqueue *queue)
|
|
{
|
|
}
|
|
static inline void b43_pio_tx_resume(struct b43_pioqueue *queue)
|
|
{
|
|
}
|
|
static inline void b43_pio_freeze_txqueues(struct b43_wldev *dev)
|
|
{
|
|
}
|
|
static inline void b43_pio_thaw_txqueues(struct b43_wldev *dev)
|
|
{
|
|
}
|
|
|
|
#endif /* CONFIG_B43_PIO */
|
|
#endif /* B43_PIO_H_ */
|