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linux-next/include/net/irda/irda_device.h
Jeff Kirsher a6227e26d9 include/net/: Fix FSF address in file headers 
Several files refer to an old address for the Free Software Foundation
in the file header comment.  Resolve by replacing the address with
the URL <http://www.gnu.org/licenses/> so that we do not have to keep
updating the header comments anytime the address changes.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-06 12:37:56 -05:00

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/*********************************************************************
*
* Filename: irda_device.h
* Version: 0.9
* Description: Contains various declarations used by the drivers
* Status: Experimental.
* Author: Dag Brattli <dagb@cs.uit.no>
* Created at: Tue Apr 14 12:41:42 1998
* Modified at: Mon Mar 20 09:08:57 2000
* Modified by: Dag Brattli <dagb@cs.uit.no>
*
* Copyright (c) 1999-2000 Dag Brattli, All Rights Reserved.
* Copyright (c) 1998 Thomas Davis, <ratbert@radiks.net>,
* Copyright (c) 2000-2002 Jean Tourrilhes <jt@hpl.hp.com>
*
* 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, or (at your option) any later version.
*
* 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/>.
*
********************************************************************/
/*
* This header contains all the IrDA definitions a driver really
* needs, and therefore the driver should not need to include
* any other IrDA headers - Jean II
*/
#ifndef IRDA_DEVICE_H
#define IRDA_DEVICE_H
#include <linux/tty.h>
#include <linux/netdevice.h>
#include <linux/spinlock.h>
#include <linux/skbuff.h> /* struct sk_buff */
#include <linux/irda.h>
#include <linux/types.h>
#include <net/pkt_sched.h>
#include <net/irda/irda.h>
#include <net/irda/qos.h> /* struct qos_info */
#include <net/irda/irqueue.h> /* irda_queue_t */
/* A few forward declarations (to make compiler happy) */
struct irlap_cb;
/* Some non-standard interface flags (should not conflict with any in if.h) */
#define IFF_SIR 0x0001 /* Supports SIR speeds */
#define IFF_MIR 0x0002 /* Supports MIR speeds */
#define IFF_FIR 0x0004 /* Supports FIR speeds */
#define IFF_VFIR 0x0008 /* Supports VFIR speeds */
#define IFF_PIO 0x0010 /* Supports PIO transfer of data */
#define IFF_DMA 0x0020 /* Supports DMA transfer of data */
#define IFF_SHM 0x0040 /* Supports shared memory data transfers */
#define IFF_DONGLE 0x0080 /* Interface has a dongle attached */
#define IFF_AIR 0x0100 /* Supports Advanced IR (AIR) standards */
#define IO_XMIT 0x01
#define IO_RECV 0x02
typedef enum {
IRDA_IRLAP, /* IrDA mode, and deliver to IrLAP */
IRDA_RAW, /* IrDA mode */
SHARP_ASK,
TV_REMOTE, /* Also known as Consumer Electronics IR */
} INFRARED_MODE;
typedef enum {
IRDA_TASK_INIT, /* All tasks are initialized with this state */
IRDA_TASK_DONE, /* Signals that the task is finished */
IRDA_TASK_WAIT,
IRDA_TASK_WAIT1,
IRDA_TASK_WAIT2,
IRDA_TASK_WAIT3,
IRDA_TASK_CHILD_INIT, /* Initializing child task */
IRDA_TASK_CHILD_WAIT, /* Waiting for child task to finish */
IRDA_TASK_CHILD_DONE /* Child task is finished */
} IRDA_TASK_STATE;
struct irda_task;
typedef int (*IRDA_TASK_CALLBACK) (struct irda_task *task);
struct irda_task {
irda_queue_t q;
magic_t magic;
IRDA_TASK_STATE state;
IRDA_TASK_CALLBACK function;
IRDA_TASK_CALLBACK finished;
struct irda_task *parent;
struct timer_list timer;
void *instance; /* Instance being called */
void *param; /* Parameter to be used by instance */
};
/* Dongle info */
struct dongle_reg;
typedef struct {
struct dongle_reg *issue; /* Registration info */
struct net_device *dev; /* Device we are attached to */
struct irda_task *speed_task; /* Task handling speed change */
struct irda_task *reset_task; /* Task handling reset */
__u32 speed; /* Current speed */
/* Callbacks to the IrDA device driver */
int (*set_mode)(struct net_device *, int mode);
int (*read)(struct net_device *dev, __u8 *buf, int len);
int (*write)(struct net_device *dev, __u8 *buf, int len);
int (*set_dtr_rts)(struct net_device *dev, int dtr, int rts);
} dongle_t;
/* Dongle registration info */
struct dongle_reg {
irda_queue_t q; /* Must be first */
IRDA_DONGLE type;
void (*open)(dongle_t *dongle, struct qos_info *qos);
void (*close)(dongle_t *dongle);
int (*reset)(struct irda_task *task);
int (*change_speed)(struct irda_task *task);
struct module *owner;
};
/*
* Per-packet information we need to hide inside sk_buff
* (must not exceed 48 bytes, check with struct sk_buff)
* The default_qdisc_pad field is a temporary hack.
*/
struct irda_skb_cb {
unsigned int default_qdisc_pad;
magic_t magic; /* Be sure that we can trust the information */
__u32 next_speed; /* The Speed to be set *after* this frame */
__u16 mtt; /* Minimum turn around time */
__u16 xbofs; /* Number of xbofs required, used by SIR mode */
__u16 next_xbofs; /* Number of xbofs required *after* this frame */
void *context; /* May be used by drivers */
void (*destructor)(struct sk_buff *skb); /* Used for flow control */
__u16 xbofs_delay; /* Number of xbofs used for generating the mtt */
__u8 line; /* Used by IrCOMM in IrLPT mode */
};
/* Chip specific info */
typedef struct {
int cfg_base; /* Config register IO base */
int sir_base; /* SIR IO base */
int fir_base; /* FIR IO base */
int mem_base; /* Shared memory base */
int sir_ext; /* Length of SIR iobase */
int fir_ext; /* Length of FIR iobase */
int irq, irq2; /* Interrupts used */
int dma, dma2; /* DMA channel(s) used */
int fifo_size; /* FIFO size */
int irqflags; /* interrupt flags (ie, IRQF_SHARED) */
int direction; /* Link direction, used by some FIR drivers */
int enabled; /* Powered on? */
int suspended; /* Suspended by APM */
__u32 speed; /* Currently used speed */
__u32 new_speed; /* Speed we must change to when Tx is finished */
int dongle_id; /* Dongle or transceiver currently used */
} chipio_t;
/* IO buffer specific info (inspired by struct sk_buff) */
typedef struct {
int state; /* Receiving state (transmit state not used) */
int in_frame; /* True if receiving frame */
__u8 *head; /* start of buffer */
__u8 *data; /* start of data in buffer */
int len; /* current length of data */
int truesize; /* total allocated size of buffer */
__u16 fcs;
struct sk_buff *skb; /* ZeroCopy Rx in async_unwrap_char() */
} iobuff_t;
/* Maximum SIR frame (skb) that we expect to receive *unwrapped*.
* Max LAP MTU (I field) is 2048 bytes max (IrLAP 1.1, chapt 6.6.5, p40).
* Max LAP header is 2 bytes (for now).
* Max CRC is 2 bytes at SIR, 4 bytes at FIR.
* Need 1 byte for skb_reserve() to align IP header for IrLAN.
* Add a few extra bytes just to be safe (buffer is power of two anyway)
* Jean II */
#define IRDA_SKB_MAX_MTU 2064
/* Maximum SIR frame that we expect to send, wrapped (i.e. with XBOFS
* and escaped characters on top of above). */
#define IRDA_SIR_MAX_FRAME 4269
/* The SIR unwrapper async_unwrap_char() will use a Rx-copy-break mechanism
* when using the optional ZeroCopy Rx, where only small frames are memcpy
* to a smaller skb to save memory. This is the threshold under which copy
* will happen (and over which it won't happen).
* Some FIR drivers may use this #define as well...
* This is the same value as various Ethernet drivers. - Jean II */
#define IRDA_RX_COPY_THRESHOLD 256
/* Function prototypes */
int irda_device_init(void);
void irda_device_cleanup(void);
/* IrLAP entry points used by the drivers.
* We declare them here to avoid the driver pulling a whole bunch stack
* headers they don't really need - Jean II */
struct irlap_cb *irlap_open(struct net_device *dev, struct qos_info *qos,
const char *hw_name);
void irlap_close(struct irlap_cb *self);
/* Interface to be uses by IrLAP */
void irda_device_set_media_busy(struct net_device *dev, int status);
int irda_device_is_media_busy(struct net_device *dev);
int irda_device_is_receiving(struct net_device *dev);
/* Interface for internal use */
static inline int irda_device_txqueue_empty(const struct net_device *dev)
{
return qdisc_all_tx_empty(dev);
}
int irda_device_set_raw_mode(struct net_device* self, int status);
struct net_device *alloc_irdadev(int sizeof_priv);
void irda_setup_dma(int channel, dma_addr_t buffer, int count, int mode);
/*
* Function irda_get_mtt (skb)
*
* Utility function for getting the minimum turnaround time out of
* the skb, where it has been hidden in the cb field.
*/
static inline __u16 irda_get_mtt(const struct sk_buff *skb)
{
const struct irda_skb_cb *cb = (const struct irda_skb_cb *) skb->cb;
return (cb->magic == LAP_MAGIC) ? cb->mtt : 10000;
}
/*
* Function irda_get_next_speed (skb)
*
* Extract the speed that should be set *after* this frame from the skb
*
* Note : return -1 for user space frames
*/
static inline __u32 irda_get_next_speed(const struct sk_buff *skb)
{
const struct irda_skb_cb *cb = (const struct irda_skb_cb *) skb->cb;
return (cb->magic == LAP_MAGIC) ? cb->next_speed : -1;
}
/*
* Function irda_get_next_xbofs (skb)
*
* Extract the xbofs that should be set for this frame from the skb
*
* Note : default to 10 for user space frames
*/
static inline __u16 irda_get_xbofs(const struct sk_buff *skb)
{
const struct irda_skb_cb *cb = (const struct irda_skb_cb *) skb->cb;
return (cb->magic == LAP_MAGIC) ? cb->xbofs : 10;
}
/*
* Function irda_get_next_xbofs (skb)
*
* Extract the xbofs that should be set *after* this frame from the skb
*
* Note : return -1 for user space frames
*/
static inline __u16 irda_get_next_xbofs(const struct sk_buff *skb)
{
const struct irda_skb_cb *cb = (const struct irda_skb_cb *) skb->cb;
return (cb->magic == LAP_MAGIC) ? cb->next_xbofs : -1;
}
#endif /* IRDA_DEVICE_H */
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