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, 165 insertions, 0 deletions

diff --git a/kernel/drivers/net/wireless/b43/pio.h b/kernel/drivers/net/wireless/b43/pio.h
new file mode 100644
index 000000000..1e5161474
--- /dev/null
+++ b/kernel/drivers/net/wireless/b43/pio.h
@@ -0,0 +1,165 @@
+#ifndef B43_PIO_H_
+#define B43_PIO_H_
+
+#include "b43.h"
+
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/list.h>
+#include <linux/skbuff.h>
+
+
+/*** Registers for PIO queues up to revision 7. ***/
+/* TX queue. */
+#define B43_PIO_TXCTL			0x00
+#define  B43_PIO_TXCTL_WRITELO		0x0001
+#define  B43_PIO_TXCTL_WRITEHI		0x0002
+#define  B43_PIO_TXCTL_EOF		0x0004
+#define  B43_PIO_TXCTL_FREADY		0x0008
+#define  B43_PIO_TXCTL_FLUSHREQ		0x0020
+#define  B43_PIO_TXCTL_FLUSHPEND	0x0040
+#define  B43_PIO_TXCTL_SUSPREQ		0x0080
+#define  B43_PIO_TXCTL_QSUSP		0x0100
+#define  B43_PIO_TXCTL_COMMCNT		0xFC00
+#define  B43_PIO_TXCTL_COMMCNT_SHIFT	10
+#define B43_PIO_TXDATA			0x02
+#define B43_PIO_TXQBUFSIZE		0x04
+/* RX queue. */
+#define B43_PIO_RXCTL			0x00
+#define  B43_PIO_RXCTL_FRAMERDY		0x0001
+#define  B43_PIO_RXCTL_DATARDY		0x0002
+#define B43_PIO_RXDATA			0x02
+
+/*** Registers for PIO queues revision 8 and later. ***/
+/* TX queue */
+#define B43_PIO8_TXCTL			0x00
+#define  B43_PIO8_TXCTL_0_7		0x00000001
+#define  B43_PIO8_TXCTL_8_15		0x00000002
+#define  B43_PIO8_TXCTL_16_23		0x00000004
+#define  B43_PIO8_TXCTL_24_31		0x00000008
+#define  B43_PIO8_TXCTL_EOF		0x00000010
+#define  B43_PIO8_TXCTL_FREADY		0x00000080
+#define  B43_PIO8_TXCTL_SUSPREQ		0x00000100
+#define  B43_PIO8_TXCTL_QSUSP		0x00000200
+#define  B43_PIO8_TXCTL_FLUSHREQ	0x00000400
+#define  B43_PIO8_TXCTL_FLUSHPEND	0x00000800
+#define B43_PIO8_TXDATA			0x04
+/* RX queue */
+#define B43_PIO8_RXCTL			0x00
+#define  B43_PIO8_RXCTL_FRAMERDY	0x00000001
+#define  B43_PIO8_RXCTL_DATARDY		0x00000002
+#define B43_PIO8_RXDATA			0x04
+
+
+/* The maximum number of TX-packets the HW can handle. */
+#define B43_PIO_MAX_NR_TXPACKETS	32
+
+
+struct b43_pio_txpacket {
+	/* Pointer to the TX queue we belong to. */
+	struct b43_pio_txqueue *queue;
+	/* The TX data packet. */
+	struct sk_buff *skb;
+	/* Index in the (struct b43_pio_txqueue)->packets array. */
+	u8 index;
+
+	struct list_head list;
+};
+
+struct b43_pio_txqueue {
+	struct b43_wldev *dev;
+	u16 mmio_base;
+
+	/* The device queue buffer size in bytes. */
+	u16 buffer_size;
+	/* The number of used bytes in the device queue buffer. */
+	u16 buffer_used;
+	/* The number of packets that can still get queued.
+	 * This is decremented on queueing a packet and incremented
+	 * after receiving the transmit status. */
+	u16 free_packet_slots;
+
+	/* True, if the mac80211 queue was stopped due to overflow at TX. */
+	bool stopped;
+	/* Our b43 queue index number */
+	u8 index;
+	/* The mac80211 QoS queue priority. */
+	u8 queue_prio;
+
+	/* Buffer for TX packet meta data. */
+	struct b43_pio_txpacket packets[B43_PIO_MAX_NR_TXPACKETS];
+	struct list_head packets_list;
+
+	/* Shortcut to the 802.11 core revision. This is to
+	 * avoid horrible pointer dereferencing in the fastpaths. */
+	u8 rev;
+};
+
+struct b43_pio_rxqueue {
+	struct b43_wldev *dev;
+	u16 mmio_base;
+
+	/* Shortcut to the 802.11 core revision. This is to
+	 * avoid horrible pointer dereferencing in the fastpaths. */
+	u8 rev;
+};
+
+
+static inline u16 b43_piotx_read16(struct b43_pio_txqueue *q, u16 offset)
+{
+	return b43_read16(q->dev, q->mmio_base + offset);
+}
+
+static inline u32 b43_piotx_read32(struct b43_pio_txqueue *q, u16 offset)
+{
+	return b43_read32(q->dev, q->mmio_base + offset);
+}
+
+static inline void b43_piotx_write16(struct b43_pio_txqueue *q,
+				     u16 offset, u16 value)
+{
+	b43_write16(q->dev, q->mmio_base + offset, value);
+}
+
+static inline void b43_piotx_write32(struct b43_pio_txqueue *q,
+				     u16 offset, u32 value)
+{
+	b43_write32(q->dev, q->mmio_base + offset, value);
+}
+
+
+static inline u16 b43_piorx_read16(struct b43_pio_rxqueue *q, u16 offset)
+{
+	return b43_read16(q->dev, q->mmio_base + offset);
+}
+
+static inline u32 b43_piorx_read32(struct b43_pio_rxqueue *q, u16 offset)
+{
+	return b43_read32(q->dev, q->mmio_base + offset);
+}
+
+static inline void b43_piorx_write16(struct b43_pio_rxqueue *q,
+				     u16 offset, u16 value)
+{
+	b43_write16(q->dev, q->mmio_base + offset, value);
+}
+
+static inline void b43_piorx_write32(struct b43_pio_rxqueue *q,
+				     u16 offset, u32 value)
+{
+	b43_write32(q->dev, q->mmio_base + offset, value);
+}
+
+
+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);
+void b43_pio_handle_txstatus(struct b43_wldev *dev,
+			     const struct b43_txstatus *status);
+void b43_pio_rx(struct b43_pio_rxqueue *q);
+
+void b43_pio_tx_suspend(struct b43_wldev *dev);
+void b43_pio_tx_resume(struct b43_wldev *dev);
+
+#endif /* B43_PIO_H_ */