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, 216 insertions, 0 deletions

diff --git a/kernel/drivers/net/wireless/prism54/islpci_dev.h b/kernel/drivers/net/wireless/prism54/islpci_dev.h
new file mode 100644
index 000000000..f6f088e05
--- /dev/null
+++ b/kernel/drivers/net/wireless/prism54/islpci_dev.h
@@ -0,0 +1,216 @@
+/*
+ *  Copyright (C) 2002 Intersil Americas Inc.
+ *  Copyright (C) 2003 Herbert Valerio Riedel <hvr@gnu.org>
+ *  Copyright (C) 2003 Luis R. Rodriguez <mcgrof@ruslug.rutgers.edu>
+ *  Copyright (C) 2003 Aurelien Alleaume <slts@free.fr>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef _ISLPCI_DEV_H
+#define _ISLPCI_DEV_H
+
+#include <linux/irqreturn.h>
+#include <linux/netdevice.h>
+#include <linux/wireless.h>
+#include <net/iw_handler.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+
+#include "isl_38xx.h"
+#include "isl_oid.h"
+#include "islpci_mgt.h"
+
+/* some states might not be superflous and may be removed when
+   design is finalized (hvr) */
+typedef enum {
+	PRV_STATE_OFF = 0,	/* this means hw_unavailable is != 0 */
+	PRV_STATE_PREBOOT,	/* we are in a pre-boot state (empty RAM) */
+	PRV_STATE_BOOT,		/* boot state (fw upload, run fw) */
+	PRV_STATE_POSTBOOT,	/* after boot state, need reset now */
+	PRV_STATE_PREINIT,	/* pre-init state */
+	PRV_STATE_INIT,		/* init state (restore MIB backup to device) */
+	PRV_STATE_READY,	/* driver&device are in operational state */
+	PRV_STATE_SLEEP		/* device in sleep mode */
+} islpci_state_t;
+
+/* ACL using MAC address */
+struct mac_entry {
+   struct list_head _list;
+   char addr[ETH_ALEN];
+};
+
+struct islpci_acl {
+   enum { MAC_POLICY_OPEN=0, MAC_POLICY_ACCEPT=1, MAC_POLICY_REJECT=2 } policy;
+   struct list_head mac_list;  /* a list of mac_entry */
+   int size;   /* size of queue */
+   struct mutex lock;   /* accessed in ioctls and trap_work */
+};
+
+struct islpci_membuf {
+	int size;                   /* size of memory */
+	void *mem;                  /* address of memory as seen by CPU */
+	dma_addr_t pci_addr;        /* address of memory as seen by device */
+};
+
+#define MAX_BSS_WPA_IE_COUNT 64
+#define MAX_WPA_IE_LEN 64
+struct islpci_bss_wpa_ie {
+	struct list_head list;
+	unsigned long last_update;
+	u8 bssid[ETH_ALEN];
+	u8 wpa_ie[MAX_WPA_IE_LEN];
+	size_t wpa_ie_len;
+
+};
+
+typedef struct {
+	spinlock_t slock;	/* generic spinlock; */
+
+	u32 priv_oid;
+
+	/* our mib cache */
+	u32 iw_mode;
+        struct rw_semaphore mib_sem;
+	void **mib;
+	char nickname[IW_ESSID_MAX_SIZE+1];
+
+	/* Take care of the wireless stats */
+	struct work_struct stats_work;
+	struct mutex stats_lock;
+	/* remember when we last updated the stats */
+	unsigned long stats_timestamp;
+	/* The first is accessed under semaphore locking.
+	 * The second is the clean one we return to iwconfig.
+	 */
+	struct iw_statistics local_iwstatistics;
+	struct iw_statistics iwstatistics;
+
+	struct iw_spy_data spy_data; /* iwspy support */
+
+	struct iw_public_data wireless_data;
+
+	int monitor_type; /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_PRISM */
+
+	struct islpci_acl acl;
+
+	/* PCI bus allocation & configuration members */
+	struct pci_dev *pdev;	/* PCI structure information */
+	char firmware[33];
+
+	void __iomem *device_base;	/* ioremapped device base address */
+
+	/* consistent DMA region */
+	void *driver_mem_address;	/* base DMA address */
+	dma_addr_t device_host_address;	/* base DMA address (bus address) */
+	dma_addr_t device_psm_buffer;	/* host memory for PSM buffering (bus address) */
+
+	/* our network_device structure  */
+	struct net_device *ndev;
+
+	/* device queue interface members */
+	struct isl38xx_cb *control_block;	/* device control block
+							   (== driver_mem_address!) */
+
+	/* Each queue has three indexes:
+	 *   free/index_mgmt/data_rx/tx (called index, see below),
+	 *   driver_curr_frag, and device_curr_frag (in the control block)
+	 * All indexes are ever-increasing, but interpreted modulo the
+	 * device queue size when used.
+	 *   index <= device_curr_frag <= driver_curr_frag  at all times
+	 * For rx queues, [index, device_curr_frag) contains fragments
+	 * that the interrupt processing needs to handle (owned by driver).
+	 * [device_curr_frag, driver_curr_frag) is the free space in the
+	 * rx queue, waiting for data (owned by device).  The driver
+	 * increments driver_curr_frag to indicate to the device that more
+	 * buffers are available.
+	 * If device_curr_frag == driver_curr_frag, no more rx buffers are
+	 * available, and the rx DMA engine of the device is halted.
+	 * For tx queues, [index, device_curr_frag) contains fragments
+	 * where tx is done; they need to be freed (owned by driver).
+	 * [device_curr_frag, driver_curr_frag) contains the frames
+	 * that are being transferred (owned by device).  The driver
+	 * increments driver_curr_frag to indicate that more tx work
+	 * needs to be done.
+	 */
+	u32 index_mgmt_rx;              /* real index mgmt rx queue */
+	u32 index_mgmt_tx;              /* read index mgmt tx queue */
+	u32 free_data_rx;	/* free pointer data rx queue */
+	u32 free_data_tx;	/* free pointer data tx queue */
+	u32 data_low_tx_full;	/* full detected flag */
+
+	/* frame memory buffers for the device queues */
+	struct islpci_membuf mgmt_tx[ISL38XX_CB_MGMT_QSIZE];
+	struct islpci_membuf mgmt_rx[ISL38XX_CB_MGMT_QSIZE];
+	struct sk_buff *data_low_tx[ISL38XX_CB_TX_QSIZE];
+	struct sk_buff *data_low_rx[ISL38XX_CB_RX_QSIZE];
+	dma_addr_t pci_map_tx_address[ISL38XX_CB_TX_QSIZE];
+	dma_addr_t pci_map_rx_address[ISL38XX_CB_RX_QSIZE];
+
+	/* wait for a reset interrupt */
+	wait_queue_head_t reset_done;
+
+	/* used by islpci_mgt_transaction */
+	struct mutex mgmt_lock; /* serialize access to mailbox and wqueue */
+	struct islpci_mgmtframe *mgmt_received;	  /* mbox for incoming frame */
+	wait_queue_head_t mgmt_wqueue;            /* waitqueue for mbox */
+
+	/* state machine */
+	islpci_state_t state;
+	int state_off;		/* enumeration of off-state, if 0 then
+				 * we're not in any off-state */
+
+	/* WPA stuff */
+	int wpa; /* WPA mode enabled */
+	struct list_head bss_wpa_list;
+	int num_bss_wpa;
+	struct mutex wpa_lock;
+	u8 wpa_ie[MAX_WPA_IE_LEN];
+	size_t wpa_ie_len;
+
+	struct work_struct reset_task;
+	int reset_task_pending;
+} islpci_private;
+
+static inline islpci_state_t
+islpci_get_state(islpci_private *priv)
+{
+	/* lock */
+	return priv->state;
+	/* unlock */
+}
+
+islpci_state_t islpci_set_state(islpci_private *priv, islpci_state_t new_state);
+
+#define ISLPCI_TX_TIMEOUT               (2*HZ)
+
+irqreturn_t islpci_interrupt(int, void *);
+
+int prism54_post_setup(islpci_private *, int);
+int islpci_reset(islpci_private *, int);
+
+static inline void
+islpci_trigger(islpci_private *priv)
+{
+	isl38xx_trigger_device(islpci_get_state(priv) == PRV_STATE_SLEEP,
+			       priv->device_base);
+}
+
+int islpci_free_memory(islpci_private *);
+struct net_device *islpci_setup(struct pci_dev *);
+
+#define DRV_NAME	"prism54"
+#define DRV_VERSION	"1.2"
+
+#endif				/* _ISLPCI_DEV_H */