From 7996a3d79d55b7f879dfd62e202bbfe2963718d3 Mon Sep 17 00:00:00 2001
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Sat, 27 Jul 2013 22:15:01 +0000
Subject: really properly move files
---
libdde-linux26/contrib/include/linux/parport.h | 565 +++++++++++++++++++++++++
1 file changed, 565 insertions(+)
create mode 100644 libdde-linux26/contrib/include/linux/parport.h
(limited to 'libdde-linux26/contrib/include/linux/parport.h')
diff --git a/libdde-linux26/contrib/include/linux/parport.h b/libdde-linux26/contrib/include/linux/parport.h
new file mode 100644
index 00000000..e1f83c50
--- /dev/null
+++ b/libdde-linux26/contrib/include/linux/parport.h
@@ -0,0 +1,565 @@
+/*
+ * Any part of this program may be used in documents licensed under
+ * the GNU Free Documentation License, Version 1.1 or any later version
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _PARPORT_H_
+#define _PARPORT_H_
+
+/* Start off with user-visible constants */
+
+/* Maximum of 16 ports per machine */
+#define PARPORT_MAX 16
+
+/* Magic numbers */
+#define PARPORT_IRQ_NONE -1
+#define PARPORT_DMA_NONE -1
+#define PARPORT_IRQ_AUTO -2
+#define PARPORT_DMA_AUTO -2
+#define PARPORT_DMA_NOFIFO -3
+#define PARPORT_DISABLE -2
+#define PARPORT_IRQ_PROBEONLY -3
+#define PARPORT_IOHI_AUTO -1
+
+#define PARPORT_CONTROL_STROBE 0x1
+#define PARPORT_CONTROL_AUTOFD 0x2
+#define PARPORT_CONTROL_INIT 0x4
+#define PARPORT_CONTROL_SELECT 0x8
+
+#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_CLASS_SCSIADAPTER
+} parport_device_class;
+
+/* The "modes" entry in parport is a bit field representing the
+ capabilities of the hardware. */
+#define PARPORT_MODE_PCSPP (1<<0) /* IBM PC registers available. */
+#define PARPORT_MODE_TRISTATE (1<<1) /* Can tristate. */
+#define PARPORT_MODE_EPP (1<<2) /* Hardware EPP. */
+#define PARPORT_MODE_ECP (1<<3) /* Hardware ECP. */
+#define PARPORT_MODE_COMPAT (1<<4) /* Hardware 'printer protocol'. */
+#define PARPORT_MODE_DMA (1<<5) /* Hardware can DMA. */
+#define PARPORT_MODE_SAFEININT (1<<6) /* SPP registers accessible in IRQ. */
+
+/* IEEE1284 modes:
+ Nibble mode, byte mode, ECP, ECPRLE and EPP are their own
+ 'extensibility request' values. Others are special.
+ 'Real' ECP modes must have the IEEE1284_MODE_ECP bit set. */
+#define IEEE1284_MODE_NIBBLE 0
+#define IEEE1284_MODE_BYTE (1<<0)
+#define IEEE1284_MODE_COMPAT (1<<8)
+#define IEEE1284_MODE_BECP (1<<9) /* Bounded ECP mode */
+#define IEEE1284_MODE_ECP (1<<4)
+#define IEEE1284_MODE_ECPRLE (IEEE1284_MODE_ECP | (1<<5))
+#define IEEE1284_MODE_ECPSWE (1<<10) /* Software-emulated */
+#define IEEE1284_MODE_EPP (1<<6)
+#define IEEE1284_MODE_EPPSL (1<<11) /* EPP 1.7 */
+#define IEEE1284_MODE_EPPSWE (1<<12) /* Software-emulated */
+#define IEEE1284_DEVICEID (1<<2) /* This is a flag */
+#define IEEE1284_EXT_LINK (1<<14) /* This flag causes the
+ * extensibility link to
+ * be requested, using
+ * bits 0-6. */
+
+/* For the benefit of parport_read/write, you can use these with
+ * parport_negotiate to use address operations. They have no effect
+ * other than to make parport_read/write use address transfers. */
+#define IEEE1284_ADDR (1<<13) /* This is a flag */
+#define IEEE1284_DATA 0 /* So is this */
+
+/* Flags for block transfer operations. */
+#define PARPORT_EPP_FAST (1<<0) /* Unreliable counts. */
+#define PARPORT_W91284PIC (1<<1) /* have a Warp9 w91284pic in the device */
+
+/* The rest is for the kernel only */
+#ifdef __KERNEL__
+
+#include <linux/jiffies.h>
+#include <linux/proc_fs.h>
+#include <linux/spinlock.h>
+#include <linux/wait.h>
+#include <linux/irqreturn.h>
+#include <linux/semaphore.h>
+#include <asm/system.h>
+#include <asm/ptrace.h>
+
+/* Define this later. */
+struct parport;
+struct pardevice;
+
+struct pc_parport_state {
+ unsigned int ctr;
+ unsigned int ecr;
+};
+
+struct ax_parport_state {
+ unsigned int ctr;
+ unsigned int ecr;
+ unsigned int dcsr;
+};
+
+/* used by both parport_amiga and parport_mfc3 */
+struct amiga_parport_state {
+ unsigned char data; /* ciaa.prb */
+ unsigned char datadir; /* ciaa.ddrb */
+ unsigned char status; /* ciab.pra & 7 */
+ unsigned char statusdir;/* ciab.ddrb & 7 */
+};
+
+struct ax88796_parport_state {
+ unsigned char cpr;
+};
+
+struct ip32_parport_state {
+ unsigned int dcr;
+ unsigned int ecr;
+};
+
+struct parport_state {
+ union {
+ struct pc_parport_state pc;
+ /* ARC has no state. */
+ struct ax_parport_state ax;
+ struct amiga_parport_state amiga;
+ struct ax88796_parport_state ax88796;
+ /* Atari has not state. */
+ struct ip32_parport_state ip32;
+ void *misc;
+ } u;
+};
+
+struct parport_operations {
+ /* IBM PC-style virtual registers. */
+ 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);
+
+ unsigned char (*read_status)(struct parport *);
+
+ /* IRQs. */
+ void (*enable_irq)(struct parport *);
+ void (*disable_irq)(struct parport *);
+
+ /* Data direction. */
+ void (*data_forward) (struct parport *);
+ void (*data_reverse) (struct parport *);
+
+ /* For core parport code. */
+ void (*init_state)(struct pardevice *, struct parport_state *);
+ void (*save_state)(struct parport *, struct parport_state *);
+ void (*restore_state)(struct parport *, struct parport_state *);
+
+ /* Block read/write */
+ size_t (*epp_write_data) (struct parport *port, const void *buf,
+ size_t len, int flags);
+ size_t (*epp_read_data) (struct parport *port, void *buf, size_t len,
+ int flags);
+ size_t (*epp_write_addr) (struct parport *port, const void *buf,
+ size_t len, int flags);
+ size_t (*epp_read_addr) (struct parport *port, void *buf, size_t len,
+ int flags);
+
+ size_t (*ecp_write_data) (struct parport *port, const void *buf,
+ size_t len, int flags);
+ size_t (*ecp_read_data) (struct parport *port, void *buf, size_t len,
+ int flags);
+ size_t (*ecp_write_addr) (struct parport *port, const void *buf,
+ size_t len, int flags);
+
+ size_t (*compat_write_data) (struct parport *port, const void *buf,
+ size_t len, int flags);
+ size_t (*nibble_read_data) (struct parport *port, void *buf,
+ size_t len, int flags);
+ size_t (*byte_read_data) (struct parport *port, void *buf,
+ size_t len, int flags);
+ struct module *owner;
+};
+
+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 daisy;
+ int (*preempt)(void *);
+ void (*wakeup)(void *);
+ void *private;
+ void (*irq_func)(void *);
+ unsigned int flags;
+ struct pardevice *next;
+ struct pardevice *prev;
+ struct parport_state *state; /* saved status over preemption */
+ wait_queue_head_t wait_q;
+ unsigned long int time;
+ unsigned long int timeslice;
+ volatile long int timeout;
+ unsigned long waiting; /* long req'd for set_bit --RR */
+ struct pardevice *waitprev;
+ struct pardevice *waitnext;
+ void * sysctl_table;
+};
+
+/* IEEE1284 information */
+
+/* IEEE1284 phases. These are exposed to userland through ppdev IOCTL
+ * PP[GS]ETPHASE, so do not change existing values. */
+enum ieee1284_phase {
+ IEEE1284_PH_FWD_DATA,
+ IEEE1284_PH_FWD_IDLE,
+ IEEE1284_PH_TERMINATE,
+ IEEE1284_PH_NEGOTIATION,
+ IEEE1284_PH_HBUSY_DNA,
+ IEEE1284_PH_REV_IDLE,
+ IEEE1284_PH_HBUSY_DAVAIL,
+ IEEE1284_PH_REV_DATA,
+ IEEE1284_PH_ECP_SETUP,
+ IEEE1284_PH_ECP_FWD_TO_REV,
+ IEEE1284_PH_ECP_REV_TO_FWD,
+ IEEE1284_PH_ECP_DIR_UNKNOWN,
+};
+struct ieee1284_info {
+ int mode;
+ volatile enum ieee1284_phase phase;
+ struct semaphore irq;
+};
+
+/* A parallel port */
+struct parport {
+ unsigned long base; /* base address */
+ unsigned long base_hi; /* base address (hi - ECR) */
+ unsigned int size; /* IO extent */
+ const char *name;
+ unsigned int modes;
+ int irq; /* interrupt (or -1 for none) */
+ int dma;
+ int muxport; /* which muxport (if any) this is */
+ int portnum; /* which physical parallel port (not mux) */
+ struct device *dev; /* Physical device associated with IO/DMA.
+ * This may unfortulately be null if the
+ * port has a legacy driver.
+ */
+
+ struct parport *physport;
+ /* If this is a non-default mux
+ parport, i.e. we're a clone of a real
+ physical port, this is a pointer to that
+ port. The locking is only done in the
+ real port. For a clone port, the
+ following structure members are
+ meaningless: devices, cad, muxsel,
+ waithead, waittail, flags, pdir,
+ dev, ieee1284, *_lock.
+
+ It this is a default mux parport, or
+ there is no mux involved, this points to
+ ourself. */
+
+ struct pardevice *devices;
+ struct pardevice *cad; /* port owner */
+ int daisy; /* currently selected daisy addr */
+ int muxsel; /* currently selected mux port */
+
+ struct pardevice *waithead;
+ struct pardevice *waittail;
+
+ struct list_head list;
+ unsigned int flags;
+
+ void *sysctl_table;
+ struct parport_device_info probe_info[5]; /* 0-3 + non-IEEE1284.3 */
+ struct ieee1284_info ieee1284;
+
+ 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;
+
+ int spintime;
+ atomic_t ref_count;
+
+ struct list_head full_list;
+ struct parport *slaves[3];
+};
+
+#define DEFAULT_SPIN_TIME 500 /* us */
+
+struct parport_driver {
+ const char *name;
+ void (*attach) (struct parport *);
+ void (*detach) (struct parport *);
+ struct list_head list;
+};
+
+/* 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);
+
+/* Once a registered port is ready for high-level drivers to use, the
+ low-level driver that registered it should announce it. This will
+ call the high-level drivers' attach() functions (after things like
+ determining the IEEE 1284.3 topology of the port and collecting
+ DeviceIDs). */
+void parport_announce_port (struct parport *port);
+
+/* Unregister a port. */
+extern void parport_remove_port(struct parport *port);
+
+/* Register a new high-level driver. */
+extern int parport_register_driver (struct parport_driver *);
+
+/* Unregister a high-level driver. */
+extern void parport_unregister_driver (struct parport_driver *);
+
+/* If parport_register_driver doesn't fit your needs, perhaps
+ * parport_find_xxx does. */
+extern struct parport *parport_find_number (int);
+extern struct parport *parport_find_base (unsigned long);
+
+/* generic irq handler, if it suits your needs */
+extern irqreturn_t parport_irq_handler(int irq, void *dev_id);
+
+/* Reference counting for ports. */
+extern struct parport *parport_get_port (struct parport *);
+extern void parport_put_port (struct parport *);
+
+/* 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)(void *),
+ 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 - relinquish a parallel port temporarily
+ * @dev: a device on the parallel port
+ *
+ * This function relinquishes the port if it would be helpful to other
+ * drivers to do so. Afterwards it tries to reclaim the port using
+ * parport_claim(), and the return value is the same as for
+ * parport_claim(). If it fails, the port is left unclaimed and it is
+ * the driver's responsibility to reclaim the port.
+ *
+ * The parport_yield() and parport_yield_blocking() functions are for
+ * marking points in the driver at which other drivers may claim the
+ * port and use their devices. Yielding the port is similar to
+ * releasing it and reclaiming it, but is more efficient because no
+ * action is taken if there are no other devices needing the port. In
+ * fact, nothing is done even if there are other devices waiting but
+ * the current device is still within its "timeslice". The default
+ * timeslice is half a second, but it can be adjusted via the /proc
+ * interface.
+ **/
+static __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 - relinquish a parallel port temporarily
+ * @dev: a device on the parallel port
+ *
+ * This function relinquishes the port if it would be helpful to other
+ * drivers to do so. Afterwards it tries to reclaim the port using
+ * parport_claim_or_block(), and the return value is the same as for
+ * parport_claim_or_block().
+ **/
+static __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);
+}
+
+/* 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_EXCL (1<<1) /* EXCL driver registered. */
+
+/* IEEE1284 functions */
+extern void parport_ieee1284_interrupt (void *);
+extern int parport_negotiate (struct parport *, int mode);
+extern ssize_t parport_write (struct parport *, const void *buf, size_t len);
+extern ssize_t parport_read (struct parport *, void *buf, size_t len);
+
+#define PARPORT_INACTIVITY_O_NONBLOCK 1
+extern long parport_set_timeout (struct pardevice *, long inactivity);
+
+extern int parport_wait_event (struct parport *, long timeout);
+extern int parport_wait_peripheral (struct parport *port,
+ unsigned char mask,
+ unsigned char val);
+extern int parport_poll_peripheral (struct parport *port,
+ unsigned char mask,
+ unsigned char val,
+ int usec);
+
+/* For architectural drivers */
+extern size_t parport_ieee1284_write_compat (struct parport *,
+ const void *, size_t, int);
+extern size_t parport_ieee1284_read_nibble (struct parport *,
+ void *, size_t, int);
+extern size_t parport_ieee1284_read_byte (struct parport *,
+ void *, size_t, int);
+extern size_t parport_ieee1284_ecp_read_data (struct parport *,
+ void *, size_t, int);
+extern size_t parport_ieee1284_ecp_write_data (struct parport *,
+ const void *, size_t, int);
+extern size_t parport_ieee1284_ecp_write_addr (struct parport *,
+ const void *, size_t, int);
+extern size_t parport_ieee1284_epp_write_data (struct parport *,
+ const void *, size_t, int);
+extern size_t parport_ieee1284_epp_read_data (struct parport *,
+ void *, size_t, int);
+extern size_t parport_ieee1284_epp_write_addr (struct parport *,
+ const void *, size_t, int);
+extern size_t parport_ieee1284_epp_read_addr (struct parport *,
+ void *, size_t, int);
+
+/* IEEE1284.3 functions */
+extern int parport_daisy_init (struct parport *port);
+extern void parport_daisy_fini (struct parport *port);
+extern struct pardevice *parport_open (int devnum, const char *name);
+extern void parport_close (struct pardevice *dev);
+extern ssize_t parport_device_id (int devnum, char *buffer, size_t len);
+extern void parport_daisy_deselect_all (struct parport *port);
+extern int parport_daisy_select (struct parport *port, int daisy, int mode);
+
+/* Lowlevel drivers _can_ call this support function to handle irqs. */
+static inline void parport_generic_irq(struct parport *port)
+{
+ parport_ieee1284_interrupt (port);
+ read_lock(&port->cad_lock);
+ if (port->cad && port->cad->irq_func)
+ port->cad->irq_func(port->cad->private);
+ read_unlock(&port->cad_lock);
+}
+
+/* Prototypes from parport_procfs */
+extern int parport_proc_register(struct parport *pp);
+extern int parport_proc_unregister(struct parport *pp);
+extern int parport_device_proc_register(struct pardevice *device);
+extern int parport_device_proc_unregister(struct pardevice *device);
+
+/* If PC hardware is the only type supported, we can optimise a bit. */
+#if !defined(CONFIG_PARPORT_NOT_PC)
+
+#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_read_status(p) parport_pc_read_status(p)
+#define parport_enable_irq(p) parport_pc_enable_irq(p)
+#define parport_disable_irq(p) parport_pc_disable_irq(p)
+#define parport_data_forward(p) parport_pc_data_forward(p)
+#define parport_data_reverse(p) parport_pc_data_reverse(p)
+
+#else /* !CONFIG_PARPORT_NOT_PC */
+
+/* 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_read_status(p) (p)->ops->read_status(p)
+#define parport_enable_irq(p) (p)->ops->enable_irq(p)
+#define parport_disable_irq(p) (p)->ops->disable_irq(p)
+#define parport_data_forward(p) (p)->ops->data_forward(p)
+#define parport_data_reverse(p) (p)->ops->data_reverse(p)
+
+#endif /* !CONFIG_PARPORT_NOT_PC */
+
+extern unsigned long parport_default_timeslice;
+extern int parport_default_spintime;
+
+#endif /* __KERNEL__ */
+#endif /* _PARPORT_H_ */
--
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