Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 158 insertions, 0 deletions

diff --git a/kernel/drivers/net/wireless/b43legacy/pio.h b/kernel/drivers/net/wireless/b43legacy/pio.h
new file mode 100644
index 000000000..8e6773ea6
--- /dev/null
+++ b/kernel/drivers/net/wireless/b43legacy/pio.h
@@ -0,0 +1,158 @@
+#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 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;
+	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);
+void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev,
+				 const struct b43legacy_txstatus *status);
+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)
+{
+	return 0;
+}
+static inline
+void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev,
+				 const struct b43legacy_txstatus *status)
+{
+}
+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_ */