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path: root/drivers/net/wireless/bcm43xx/bcm43xx_pio.h
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Diffstat (limited to 'drivers/net/wireless/bcm43xx/bcm43xx_pio.h')
-rw-r--r--drivers/net/wireless/bcm43xx/bcm43xx_pio.h88
1 files changed, 88 insertions, 0 deletions
diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_pio.h b/drivers/net/wireless/bcm43xx/bcm43xx_pio.h
new file mode 100644
index 00000000000..71b92ee3416
--- /dev/null
+++ b/drivers/net/wireless/bcm43xx/bcm43xx_pio.h
@@ -0,0 +1,88 @@
+#ifndef BCM43xx_PIO_H_
+#define BCM43xx_PIO_H_
+
+#include "bcm43xx.h"
+
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/workqueue.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_WRITEHI (1 << 0)
+#define BCM43xx_PIO_TXCTL_WRITELO (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
+
+
+struct bcm43xx_pioqueue;
+struct bcm43xx_xmitstatus;
+
+struct bcm43xx_pio_txpacket {
+ struct bcm43xx_pioqueue *queue;
+ struct ieee80211_txb *txb;
+ struct list_head list;
+
+ u8 xmitted_frags;
+ u16 xmitted_octets;
+};
+
+#define pio_txpacket_getindex(packet) ((int)((packet) - (packet)->queue->__tx_packets_cache))
+
+struct bcm43xx_pioqueue {
+ struct bcm43xx_private *bcm;
+ u16 mmio_base;
+
+ u8 tx_suspended:1;
+
+ /* 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;
+ /* 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;
+ /* Locking of the TX queues and the accounting. */
+ spinlock_t txlock;
+ struct work_struct txwork;
+ struct bcm43xx_pio_txpacket __tx_packets_cache[BCM43xx_PIO_MAXTXPACKETS];
+};
+
+int bcm43xx_pio_init(struct bcm43xx_private *bcm);
+void bcm43xx_pio_free(struct bcm43xx_private *bcm);
+
+int FASTCALL(bcm43xx_pio_transfer_txb(struct bcm43xx_private *bcm,
+ struct ieee80211_txb *txb));
+void FASTCALL(bcm43xx_pio_handle_xmitstatus(struct bcm43xx_private *bcm,
+ struct bcm43xx_xmitstatus *status));
+
+void FASTCALL(bcm43xx_pio_rx(struct bcm43xx_pioqueue *queue));
+#endif /* BCM43xx_PIO_H_ */