[B43LEGACY]: add mac80211-based driver for legacy BCM43xx devices
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wireless/b43legacy/pio.h b/drivers/net/wireless/b43legacy/pio.h
new file mode 100644
index 0000000..5bfed0c
--- /dev/null
+++ b/drivers/net/wireless/b43legacy/pio.h
@@ -0,0 +1,172 @@
+#ifndef B43legacy_PIO_H_
+#define B43legacy_PIO_H_
+
+#include "b43legacy.h"
+
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/skbuff.h>
+
+
+#define B43legacy_PIO_TXCTL 0x00
+#define B43legacy_PIO_TXDATA 0x02
+#define B43legacy_PIO_TXQBUFSIZE 0x04
+#define B43legacy_PIO_RXCTL 0x08
+#define B43legacy_PIO_RXDATA 0x0A
+
+#define B43legacy_PIO_TXCTL_WRITELO (1 << 0)
+#define B43legacy_PIO_TXCTL_WRITEHI (1 << 1)
+#define B43legacy_PIO_TXCTL_COMPLETE (1 << 2)
+#define B43legacy_PIO_TXCTL_INIT (1 << 3)
+#define B43legacy_PIO_TXCTL_SUSPEND (1 << 7)
+
+#define B43legacy_PIO_RXCTL_DATAAVAILABLE (1 << 0)
+#define B43legacy_PIO_RXCTL_READY (1 << 1)
+
+/* PIO constants */
+#define B43legacy_PIO_MAXTXDEVQPACKETS 31
+#define B43legacy_PIO_TXQADJUST 80
+
+/* PIO tuning knobs */
+#define B43legacy_PIO_MAXTXPACKETS 256
+
+
+
+#ifdef CONFIG_B43LEGACY_PIO
+
+
+struct b43legacy_pioqueue;
+struct b43legacy_xmitstatus;
+
+struct b43legacy_pio_txpacket {
+ struct b43legacy_pioqueue *queue;
+ struct sk_buff *skb;
+ struct ieee80211_tx_status txstat;
+ struct list_head list;
+};
+
+#define pio_txpacket_getindex(packet) ((int)((packet) - \
+ (packet)->queue->tx_packets_cache))
+
+struct b43legacy_pioqueue {
+ struct b43legacy_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 b43legacy_pio_txpacket
+ tx_packets_cache[B43legacy_PIO_MAXTXPACKETS];
+};
+
+static inline
+u16 b43legacy_pio_read(struct b43legacy_pioqueue *queue,
+ u16 offset)
+{
+ return b43legacy_read16(queue->dev, queue->mmio_base + offset);
+}
+
+static inline
+void b43legacy_pio_write(struct b43legacy_pioqueue *queue,
+ u16 offset, u16 value)
+{
+ b43legacy_write16(queue->dev, queue->mmio_base + offset, value);
+ mmiowb();
+}
+
+
+int b43legacy_pio_init(struct b43legacy_wldev *dev);
+void b43legacy_pio_free(struct b43legacy_wldev *dev);
+
+int b43legacy_pio_tx(struct b43legacy_wldev *dev,
+ struct sk_buff *skb,
+ struct ieee80211_tx_control *ctl);
+void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev,
+ const struct b43legacy_txstatus *status);
+void b43legacy_pio_get_tx_stats(struct b43legacy_wldev *dev,
+ struct ieee80211_tx_queue_stats *stats);
+void b43legacy_pio_rx(struct b43legacy_pioqueue *queue);
+
+/* Suspend TX queue in hardware. */
+void b43legacy_pio_tx_suspend(struct b43legacy_pioqueue *queue);
+void b43legacy_pio_tx_resume(struct b43legacy_pioqueue *queue);
+/* Suspend (freeze) the TX tasklet (software level). */
+void b43legacy_pio_freeze_txqueues(struct b43legacy_wldev *dev);
+void b43legacy_pio_thaw_txqueues(struct b43legacy_wldev *dev);
+
+#else /* CONFIG_B43LEGACY_PIO */
+
+static inline
+int b43legacy_pio_init(struct b43legacy_wldev *dev)
+{
+ return 0;
+}
+static inline
+void b43legacy_pio_free(struct b43legacy_wldev *dev)
+{
+}
+static inline
+int b43legacy_pio_tx(struct b43legacy_wldev *dev,
+ struct sk_buff *skb,
+ struct ieee80211_tx_control *ctl)
+{
+ return 0;
+}
+static inline
+void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev,
+ const struct b43legacy_txstatus *status)
+{
+}
+static inline
+void b43legacy_pio_get_tx_stats(struct b43legacy_wldev *dev,
+ struct ieee80211_tx_queue_stats *stats)
+{
+}
+static inline
+void b43legacy_pio_rx(struct b43legacy_pioqueue *queue)
+{
+}
+static inline
+void b43legacy_pio_tx_suspend(struct b43legacy_pioqueue *queue)
+{
+}
+static inline
+void b43legacy_pio_tx_resume(struct b43legacy_pioqueue *queue)
+{
+}
+static inline
+void b43legacy_pio_freeze_txqueues(struct b43legacy_wldev *dev)
+{
+}
+static inline
+void b43legacy_pio_thaw_txqueues(struct b43legacy_wldev *dev)
+{
+}
+
+#endif /* CONFIG_B43LEGACY_PIO */
+#endif /* B43legacy_PIO_H_ */