Import of Linux 2.2.12 subset (ipv4 stack and related)

1 files changed, 393 insertions, 0 deletions

diff --git a/pfinet/linux-src/include/linux/parport.h b/pfinet/linux-src/include/linux/parport.h
new file mode 100644
index 00000000..3adbc5ab
--- /dev/null
+++ b/pfinet/linux-src/include/linux/parport.h
@@ -0,0 +1,393 @@
+/* $Id: parport.h,v 1.1 1998/05/17 10:57:52 andrea Exp andrea $ */
+
+#ifndef _PARPORT_H_
+#define _PARPORT_H_
+
+/* Start off with user-visible constants */
+
+/* Maximum of 8 ports per machine */
+#define PARPORT_MAX  8 
+
+/* Magic numbers */
+#define PARPORT_IRQ_NONE  -1
+#define PARPORT_DMA_NONE  -1
+#define PARPORT_IRQ_AUTO  -2
+#define PARPORT_DMA_AUTO  -2
+#define PARPORT_DISABLE   -2
+#define PARPORT_IRQ_PROBEONLY -3
+
+#define PARPORT_CONTROL_STROBE    0x1
+#define PARPORT_CONTROL_AUTOFD    0x2
+#define PARPORT_CONTROL_INIT      0x4
+#define PARPORT_CONTROL_SELECT    0x8
+#define PARPORT_CONTROL_INTEN     0x10
+#define PARPORT_CONTROL_DIRECTION 0x20
+
+#define PARPORT_STATUS_ERROR      0x8
+#define PARPORT_STATUS_SELECT     0x10
+#define PARPORT_STATUS_PAPEROUT   0x20
+#define PARPORT_STATUS_ACK        0x40
+#define PARPORT_STATUS_BUSY       0x80
+
+/* Type classes for Plug-and-Play probe.  */
+typedef enum {
+	PARPORT_CLASS_LEGACY = 0,       /* Non-IEEE1284 device */
+	PARPORT_CLASS_PRINTER,
+	PARPORT_CLASS_MODEM,
+	PARPORT_CLASS_NET,
+	PARPORT_CLASS_HDC,              /* Hard disk controller */
+	PARPORT_CLASS_PCMCIA,
+	PARPORT_CLASS_MEDIA,            /* Multimedia device */
+	PARPORT_CLASS_FDC,              /* Floppy disk controller */
+	PARPORT_CLASS_PORTS,
+	PARPORT_CLASS_SCANNER,
+	PARPORT_CLASS_DIGCAM,
+	PARPORT_CLASS_OTHER,            /* Anything else */
+	PARPORT_CLASS_UNSPEC            /* No CLS field in ID */
+} parport_device_class;
+
+/* The "modes" entry in parport is a bit field representing the following
+ * modes.
+ * Note that PARPORT_MODE_PCECPEPP is for the SMC EPP+ECP mode which is NOT
+ * 100% compatible with EPP.
+ */
+#define PARPORT_MODE_PCSPP	        0x0001
+#define PARPORT_MODE_PCPS2		0x0002
+#define PARPORT_MODE_PCEPP		0x0004
+#define PARPORT_MODE_PCECP		0x0008
+#define PARPORT_MODE_PCECPEPP		0x0010
+#define PARPORT_MODE_PCECR		0x0020  /* ECR Register Exists */
+#define PARPORT_MODE_PCECPPS2		0x0040
+
+/* The rest is for the kernel only */
+#ifdef __KERNEL__
+
+#include <asm/system.h>
+#include <asm/ptrace.h>
+#include <asm/spinlock.h>
+#include <linux/proc_fs.h>
+#include <linux/config.h>
+
+#define PARPORT_NEED_GENERIC_OPS
+
+/* Define this later. */
+struct parport;
+
+struct pc_parport_state {
+	unsigned int ctr;
+	unsigned int ecr;
+};
+
+struct parport_state {
+	union {
+		struct pc_parport_state pc;
+		/* ARC has no state. */
+		/* AX uses same state information as PC */
+		void *misc; 
+	} u;
+};
+
+struct parport_operations {
+	void (*write_data)(struct parport *, unsigned char);
+	unsigned char (*read_data)(struct parport *);
+	void (*write_control)(struct parport *, unsigned char);
+	unsigned char (*read_control)(struct parport *);
+	unsigned char (*frob_control)(struct parport *, unsigned char mask, unsigned char val);
+	void (*write_econtrol)(struct parport *, unsigned char);
+	unsigned char (*read_econtrol)(struct parport *);
+	unsigned char (*frob_econtrol)(struct parport *, unsigned char mask, unsigned char val);
+	void (*write_status)(struct parport *, unsigned char);
+	unsigned char (*read_status)(struct parport *);
+	void (*write_fifo)(struct parport *, unsigned char);
+	unsigned char (*read_fifo)(struct parport *);
+
+	void (*change_mode)(struct parport *, int);
+
+	void (*release_resources)(struct parport *);
+	int (*claim_resources)(struct parport *);
+
+	void (*epp_write_data)(struct parport *, unsigned char);
+	unsigned char (*epp_read_data)(struct parport *);
+	void (*epp_write_addr)(struct parport *, unsigned char);
+	unsigned char (*epp_read_addr)(struct parport *);
+	int (*epp_check_timeout)(struct parport *);
+	size_t (*epp_write_block)(struct parport *, void *, size_t);
+	size_t (*epp_read_block)(struct parport *, void *, size_t);
+
+	int (*ecp_write_block)(struct parport *, void *, size_t, void (*fn)(struct parport *, void *, size_t), void *);
+	int (*ecp_read_block)(struct parport *, void *, size_t, void (*fn)(struct parport *, void *, size_t), void *);
+
+	void (*init_state)(struct parport_state *);
+	void (*save_state)(struct parport *, struct parport_state *);
+	void (*restore_state)(struct parport *, struct parport_state *);
+
+	void (*enable_irq)(struct parport *);
+	void (*disable_irq)(struct parport *);
+	void (*interrupt)(int, void *, struct pt_regs *);
+
+	void (*inc_use_count)(void);
+	void (*dec_use_count)(void);
+	void (*fill_inode)(struct inode *inode, int fill);
+};
+
+struct parport_device_info {
+	parport_device_class class;
+	const char *class_name;
+	const char *mfr;
+	const char *model;
+	const char *cmdset;
+	const char *description;
+};
+
+/* Each device can have two callback functions:
+ *  1) a preemption function, called by the resource manager to request
+ *     that the driver relinquish control of the port.  The driver should
+ *     return zero if it agrees to release the port, and nonzero if it 
+ *     refuses.  Do not call parport_release() - the kernel will do this
+ *     implicitly.
+ *
+ *  2) a wake-up function, called by the resource manager to tell drivers
+ *     that the port is available to be claimed.  If a driver wants to use
+ *     the port, it should call parport_claim() here.
+ */
+
+/* A parallel port device */
+struct pardevice {
+	const char *name;
+	struct parport *port;
+	int (*preempt)(void *);
+	void (*wakeup)(void *);
+	void *private;
+	void (*irq_func)(int, void *, struct pt_regs *);
+	unsigned int flags;
+	struct pardevice *next;
+	struct pardevice *prev;
+	struct parport_state *state;     /* saved status over preemption */
+	struct wait_queue *wait_q;
+	unsigned long int time;
+	unsigned long int timeslice;
+	unsigned int waiting;
+	struct pardevice *waitprev;
+	struct pardevice *waitnext;
+};
+
+/* Directory information for the /proc interface */
+struct parport_dir {
+	struct proc_dir_entry *entry;    /* Directory /proc/parport/X     */
+	struct proc_dir_entry *irq;	/*		.../irq           */
+	struct proc_dir_entry *devices;  /*		.../devices       */
+	struct proc_dir_entry *hardware; /*		.../hardware      */
+	struct proc_dir_entry *probe;	 /*		.../autoprobe	  */
+	char name[4];
+};
+
+/* A parallel port */
+struct parport {
+	unsigned long base;	/* base address */
+	unsigned int size;	/* IO extent */
+	const char *name;
+	int irq;		/* interrupt (or -1 for none) */
+	int dma;
+	unsigned int modes;
+
+	struct pardevice *devices;
+	struct pardevice *cad;	/* port owner */
+
+	struct pardevice *waithead;
+	struct pardevice *waittail;
+	
+	struct parport *next;
+	unsigned int flags;
+
+	struct parport_dir pdir;
+	struct parport_device_info probe_info; 
+
+	struct parport_operations *ops;
+	void *private_data;     /* for lowlevel driver */
+
+	int number;		/* port index - the `n' in `parportn' */
+	spinlock_t pardevice_lock;
+	spinlock_t waitlist_lock;
+	rwlock_t cad_lock;
+};
+
+/* parport_register_port registers a new parallel port at the given address (if
+ * one does not already exist) and returns a pointer to it.  This entails
+ * claiming the I/O region, IRQ and DMA.
+ * NULL is returned if initialisation fails. 
+ */
+struct parport *parport_register_port(unsigned long base, int irq, int dma,
+				      struct parport_operations *ops);
+
+/* Unregister a port. */
+extern void parport_unregister_port(struct parport *port);
+
+/* parport_in_use returns nonzero if there are devices attached to a port. */
+#define parport_in_use(x)  ((x)->devices != NULL)
+
+/* Put a parallel port to sleep; release its hardware resources.  Only possible
+ * if no devices are registered.  */
+extern void parport_quiesce(struct parport *);
+
+/* parport_enumerate returns a pointer to the linked list of all the ports
+ * in this machine.
+ */
+struct parport *parport_enumerate(void);
+
+/* parport_register_device declares that a device is connected to a port, and 
+ * tells the kernel all it needs to know.  
+ * pf is the preemption function (may be NULL for no callback)
+ * kf is the wake-up function (may be NULL for no callback)
+ * irq_func is the interrupt handler (may be NULL for no interrupts)
+ * handle is a user pointer that gets handed to callback functions. 
+ */
+struct pardevice *parport_register_device(struct parport *port, 
+			  const char *name,
+			  int (*pf)(void *), void (*kf)(void *),
+			  void (*irq_func)(int, void *, struct pt_regs *), 
+			  int flags, void *handle);
+
+/* parport_unregister unlinks a device from the chain. */
+extern void parport_unregister_device(struct pardevice *dev);
+
+/* parport_claim tries to gain ownership of the port for a particular driver.
+ * This may fail (return non-zero) if another driver is busy.  If this
+ * driver has registered an interrupt handler, it will be enabled. 
+ */
+extern int parport_claim(struct pardevice *dev);
+
+/* parport_claim_or_block is the same, but sleeps if the port cannot be 
+   claimed.  Return value is 1 if it slept, 0 normally and -errno on error.  */
+extern int parport_claim_or_block(struct pardevice *dev);
+
+/* parport_release reverses a previous parport_claim.  This can never fail, 
+ * though the effects are undefined (except that they are bad) if you didn't
+ * previously own the port.  Once you have released the port you should make
+ * sure that neither your code nor the hardware on the port tries to initiate
+ * any communication without first re-claiming the port.
+ * If you mess with the port state (enabling ECP for example) you should
+ * clean up before releasing the port. 
+ */
+
+extern void parport_release(struct pardevice *dev);
+
+/* parport_yield relinquishes the port if it would be helpful to other
+ * drivers.  The return value is the same as for parport_claim.
+ */
+extern __inline__ int parport_yield(struct pardevice *dev)
+{
+	unsigned long int timeslip = (jiffies - dev->time);
+	if ((dev->port->waithead == NULL) || (timeslip < dev->timeslice))
+		return 0;
+	parport_release(dev);
+	return parport_claim(dev);
+}
+
+/* parport_yield_blocking is the same but uses parport_claim_or_block
+ * instead of parport_claim.
+ */
+extern __inline__ int parport_yield_blocking(struct pardevice *dev)
+{
+	unsigned long int timeslip = (jiffies - dev->time);
+	if ((dev->port->waithead == NULL) || (timeslip < dev->timeslice))
+		return 0;
+	parport_release(dev);
+	return parport_claim_or_block(dev);
+}
+
+/*
+ * Lowlevel drivers _can_ call this support function to handle irqs.
+ */
+extern __inline__ void parport_generic_irq(int irq, struct parport *port,
+					   struct pt_regs *regs)
+{
+	read_lock(&port->cad_lock);
+	if (!port->cad)
+		goto out_unlock;
+	if (port->cad->irq_func)
+		port->cad->irq_func(irq, port->cad->private, regs);
+	else
+		printk(KERN_ERR "%s: irq%d happened with irq_func NULL "
+		       "with %s as cad!\n", port->name, irq, port->cad->name);
+ out_unlock:
+	read_unlock(&port->cad_lock);
+}
+
+/* Flags used to identify what a device does. */
+#define PARPORT_DEV_TRAN		0	/* WARNING !! DEPRECATED !! */
+#define PARPORT_DEV_LURK		(1<<0)	/* WARNING !! DEPRECATED !! */
+#define PARPORT_DEV_EXCL		(1<<1)	/* Need exclusive access. */
+
+#define PARPORT_FLAG_COMA		(1<<0)
+#define PARPORT_FLAG_EXCL		(1<<1)	/* EXCL driver registered. */
+
+extern void parport_parse_irqs(int, const char *[], int irqval[]);
+extern int parport_ieee1284_nibble_mode_ok(struct parport *, unsigned char);
+extern int parport_wait_peripheral(struct parport *, unsigned char, unsigned
+				   char);
+
+/* Prototypes from parport_procfs */
+extern int parport_proc_init(void);
+extern void parport_proc_cleanup(void);
+extern int parport_proc_register(struct parport *pp);
+extern int parport_proc_unregister(struct parport *pp);
+
+extern void dec_parport_count(void);
+extern void inc_parport_count(void);
+
+extern int parport_probe(struct parport *port, char *buffer, int len);
+extern void parport_probe_one(struct parport *port);
+extern void (*parport_probe_hook)(struct parport *port);
+
+/* If PC hardware is the only type supported, we can optimise a bit.  */
+#if (defined(CONFIG_PARPORT_PC) || defined(CONFIG_PARPORT_PC_MODULE)) && !(defined(CONFIG_PARPORT_AX) || defined(CONFIG_PARPORT_AX_MODULE)) && !(defined(CONFIG_PARPORT_ARC) || defined(CONFIG_PARPORT_ARC_MODULE)) && !defined(CONFIG_PARPORT_OTHER)
+#undef PARPORT_NEED_GENERIC_OPS
+#include <linux/parport_pc.h>
+#define parport_write_data(p,x)            parport_pc_write_data(p,x)
+#define parport_read_data(p)               parport_pc_read_data(p)
+#define parport_write_control(p,x)         parport_pc_write_control(p,x)
+#define parport_read_control(p)            parport_pc_read_control(p)
+#define parport_frob_control(p,m,v)        parport_pc_frob_control(p,m,v)
+#define parport_write_econtrol(p,x)        parport_pc_write_econtrol(p,x)
+#define parport_read_econtrol(p)           parport_pc_read_econtrol(p)
+#define parport_frob_econtrol(p,m,v)       parport_pc_frob_econtrol(p,m,v)
+#define parport_write_status(p,v)          parport_pc_write_status(p,v)
+#define parport_read_status(p)             parport_pc_read_status(p)
+#define parport_write_fifo(p,v)            parport_pc_write_fifo(p,v)
+#define parport_read_fifo(p)               parport_pc_read_fifo(p)
+#define parport_change_mode(p,m)           parport_pc_change_mode(p,m)
+#define parport_release_resources(p)       parport_pc_release_resources(p)
+#define parport_claim_resources(p)         parport_pc_claim_resources(p)
+#define parport_epp_write_data(p,x)        parport_pc_write_epp(p,x)
+#define parport_epp_read_data(p)           parport_pc_read_epp(p)
+#define parport_epp_write_addr(p,x)        parport_pc_write_epp_addr(p,x)
+#define parport_epp_read_addr(p)           parport_pc_read_epp_addr(p)
+#define parport_epp_check_timeout(p)       parport_pc_check_epp_timeout(p)
+#endif
+
+#ifdef PARPORT_NEED_GENERIC_OPS
+/* Generic operations vector through the dispatch table. */
+#define parport_write_data(p,x)            (p)->ops->write_data(p,x)
+#define parport_read_data(p)               (p)->ops->read_data(p)
+#define parport_write_control(p,x)         (p)->ops->write_control(p,x)
+#define parport_read_control(p)            (p)->ops->read_control(p)
+#define parport_frob_control(p,m,v)        (p)->ops->frob_control(p,m,v)
+#define parport_write_econtrol(p,x)        (p)->ops->write_econtrol(p,x)
+#define parport_read_econtrol(p)           (p)->ops->read_econtrol(p)
+#define parport_frob_econtrol(p,m,v)       (p)->ops->frob_econtrol(p,m,v)
+#define parport_write_status(p,v)          (p)->ops->write_status(p,v)
+#define parport_read_status(p)             (p)->ops->read_status(p)
+#define parport_write_fifo(p,v)            (p)->ops->write_fifo(p,v)
+#define parport_read_fifo(p)               (p)->ops->read_fifo(p)
+#define parport_change_mode(p,m)           (p)->ops->change_mode(p,m)
+#define parport_release_resources(p)       (p)->ops->release_resources(p)
+#define parport_claim_resources(p)         (p)->ops->claim_resources(p)
+#define parport_epp_write_data(p,x)        (p)->ops->epp_write_data(p,x)
+#define parport_epp_read_data(p)           (p)->ops->epp_read_data(p)
+#define parport_epp_write_addr(p,x)        (p)->ops->epp_write_addr(p,x)
+#define parport_epp_read_addr(p)           (p)->ops->epp_read_addr(p)
+#define parport_epp_check_timeout(p)       (p)->ops->epp_check_timeout(p)
+#endif
+
+#endif /* __KERNEL__ */
+#endif /* _PARPORT_H_ */