b43: finish removal of pio support

As suggested in "b43: Remove PIO support"...
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43/pio.h

-#ifndef B43_PIO_H_
-#define B43_PIO_H_
-
-#include "b43.h"
-
-#include <linux/interrupt.h>
-#include <linux/io.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_ */