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-rw-r--r--package/bcm43xx-mac80211/src/bcm43xx/bcm43xx_pio.h170
1 files changed, 170 insertions, 0 deletions
diff --git a/package/bcm43xx-mac80211/src/bcm43xx/bcm43xx_pio.h b/package/bcm43xx-mac80211/src/bcm43xx/bcm43xx_pio.h
new file mode 100644
index 0000000000..b9d919b750
--- /dev/null
+++ b/package/bcm43xx-mac80211/src/bcm43xx/bcm43xx_pio.h
@@ -0,0 +1,170 @@
+#ifndef BCM43xx_PIO_H_
+#define BCM43xx_PIO_H_
+
+#include "bcm43xx.h"
+
+#include <linux/interrupt.h>
+#include <linux/list.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_WRITELO (1 << 0)
+#define BCM43xx_PIO_TXCTL_WRITEHI (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
+
+
+
+#ifdef CONFIG_BCM43XX_MAC80211_PIO
+
+
+struct bcm43xx_pioqueue;
+struct bcm43xx_xmitstatus;
+
+struct bcm43xx_pio_txpacket {
+ struct bcm43xx_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 bcm43xx_pioqueue {
+ struct bcm43xx_wldev *dev;
+ u16 mmio_base;
+
+ u8 tx_suspended:1,
+ tx_frozen:1,
+ need_workarounds:1; /* 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 bcm43xx_pio_txpacket tx_packets_cache[BCM43xx_PIO_MAXTXPACKETS];
+};
+
+static inline
+u16 bcm43xx_pio_read(struct bcm43xx_pioqueue *queue,
+ u16 offset)
+{
+ return bcm43xx_read16(queue->dev, queue->mmio_base + offset);
+}
+
+static inline
+void bcm43xx_pio_write(struct bcm43xx_pioqueue *queue,
+ u16 offset, u16 value)
+{
+ bcm43xx_write16(queue->dev, queue->mmio_base + offset, value);
+ mmiowb();
+}
+
+
+int bcm43xx_pio_init(struct bcm43xx_wldev *dev);
+void bcm43xx_pio_free(struct bcm43xx_wldev *dev);
+
+int bcm43xx_pio_tx(struct bcm43xx_wldev *dev,
+ struct sk_buff *skb,
+ struct ieee80211_tx_control *ctl);
+void bcm43xx_pio_handle_txstatus(struct bcm43xx_wldev *dev,
+ const struct bcm43xx_txstatus *status);
+void bcm43xx_pio_get_tx_stats(struct bcm43xx_wldev *dev,
+ struct ieee80211_tx_queue_stats *stats);
+void bcm43xx_pio_rx(struct bcm43xx_pioqueue *queue);
+
+/* Suspend TX queue in hardware. */
+void bcm43xx_pio_tx_suspend(struct bcm43xx_pioqueue *queue);
+void bcm43xx_pio_tx_resume(struct bcm43xx_pioqueue *queue);
+/* Suspend (freeze) the TX tasklet (software level). */
+void bcm43xx_pio_freeze_txqueues(struct bcm43xx_wldev *dev);
+void bcm43xx_pio_thaw_txqueues(struct bcm43xx_wldev *dev);
+
+#else /* CONFIG_BCM43XX_MAC80211_PIO */
+
+static inline
+int bcm43xx_pio_init(struct bcm43xx_wldev *dev)
+{
+ return 0;
+}
+static inline
+void bcm43xx_pio_free(struct bcm43xx_wldev *dev)
+{
+}
+static inline
+int bcm43xx_pio_tx(struct bcm43xx_wldev *dev,
+ struct sk_buff *skb,
+ struct ieee80211_tx_control *ctl)
+{
+ return 0;
+}
+static inline
+void bcm43xx_pio_handle_txstatus(struct bcm43xx_wldev *dev,
+ const struct bcm43xx_txstatus *status)
+{
+}
+static inline
+void bcm43xx_pio_get_tx_stats(struct bcm43xx_wldev *dev,
+ struct ieee80211_tx_queue_stats *stats)
+{
+}
+static inline
+void bcm43xx_pio_rx(struct bcm43xx_pioqueue *queue)
+{
+}
+static inline
+void bcm43xx_pio_tx_suspend(struct bcm43xx_pioqueue *queue)
+{
+}
+static inline
+void bcm43xx_pio_tx_resume(struct bcm43xx_pioqueue *queue)
+{
+}
+static inline
+void bcm43xx_pio_freeze_txqueues(struct bcm43xx_wldev *dev)
+{
+}
+static inline
+void bcm43xx_pio_thaw_txqueues(struct bcm43xx_wldev *dev)
+{
+}
+
+#endif /* CONFIG_BCM43XX_MAC80211_PIO */
+#endif /* BCM43xx_PIO_H_ */