[B43]: add mac80211-based driver for modern BCM43xx devices
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wireless/b43/pio.h b/drivers/net/wireless/b43/pio.h
new file mode 100644
index 0000000..46d6d2e
--- /dev/null
+++ b/drivers/net/wireless/b43/pio.h
@@ -0,0 +1,153 @@
+#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;
+};
+
+#define pio_txpacket_getindex(packet) ((int)((packet) - (packet)->queue->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_ */