include/linux/parport.h

   1 /* $Id: parport.h,v 1.1 1998/05/17 10:57:52 andrea Exp andrea $ */
   2
   3 /*
   4  * Any part of this program may be used in documents licensed under
   5  * the GNU Free Documentation License, Version 1.1 or any later version
   6  * published by the Free Software Foundation.
   7  */
   8
   9 #ifndef _PARPORT_H_
  10 #define _PARPORT_H_
  11
  12 /* Start off with user-visible constants */
  13
  14 /* Maximum of 16 ports per machine */
  15 #define PARPORT_MAX  16
  16
  17 /* Magic numbers */
  18 #define PARPORT_IRQ_NONE  -1
  19 #define PARPORT_DMA_NONE  -1
  20 #define PARPORT_IRQ_AUTO  -2
  21 #define PARPORT_DMA_AUTO  -2
  22 #define PARPORT_DMA_NOFIFO -3
  23 #define PARPORT_DISABLE   -2
  24 #define PARPORT_IRQ_PROBEONLY -3
  25 #define PARPORT_IOHI_AUTO -1
  26
  27 #define PARPORT_CONTROL_STROBE    0x1
  28 #define PARPORT_CONTROL_AUTOFD    0x2
  29 #define PARPORT_CONTROL_INIT      0x4
  30 #define PARPORT_CONTROL_SELECT    0x8
  31
  32 #define PARPORT_STATUS_ERROR      0x8
  33 #define PARPORT_STATUS_SELECT     0x10
  34 #define PARPORT_STATUS_PAPEROUT   0x20
  35 #define PARPORT_STATUS_ACK        0x40
  36 #define PARPORT_STATUS_BUSY       0x80
  37
  38 /* Type classes for Plug-and-Play probe.  */
  39 typedef enum {
  40         PARPORT_CLASS_LEGACY = 0,       /* Non-IEEE1284 device */
  41         PARPORT_CLASS_PRINTER,
  42         PARPORT_CLASS_MODEM,
  43         PARPORT_CLASS_NET,
  44         PARPORT_CLASS_HDC,              /* Hard disk controller */
  45         PARPORT_CLASS_PCMCIA,
  46         PARPORT_CLASS_MEDIA,            /* Multimedia device */
  47         PARPORT_CLASS_FDC,              /* Floppy disk controller */
  48         PARPORT_CLASS_PORTS,
  49         PARPORT_CLASS_SCANNER,
  50         PARPORT_CLASS_DIGCAM,
  51         PARPORT_CLASS_OTHER,            /* Anything else */
  52         PARPORT_CLASS_UNSPEC,           /* No CLS field in ID */
  53         PARPORT_CLASS_SCSIADAPTER
  54 } parport_device_class;
  55
  56 /* The "modes" entry in parport is a bit field representing the
  57    capabilities of the hardware. */
  58 #define PARPORT_MODE_PCSPP      (1<<0) /* IBM PC registers available. */
  59 #define PARPORT_MODE_TRISTATE   (1<<1) /* Can tristate. */
  60 #define PARPORT_MODE_EPP        (1<<2) /* Hardware EPP. */
  61 #define PARPORT_MODE_ECP        (1<<3) /* Hardware ECP. */
  62 #define PARPORT_MODE_COMPAT     (1<<4) /* Hardware 'printer protocol'. */
  63 #define PARPORT_MODE_DMA        (1<<5) /* Hardware can DMA. */
  64 #define PARPORT_MODE_SAFEININT  (1<<6) /* SPP registers accessible in IRQ. */
  65
  66 /* IEEE1284 modes:
  67    Nibble mode, byte mode, ECP, ECPRLE and EPP are their own
  68    'extensibility request' values.  Others are special.
  69    'Real' ECP modes must have the IEEE1284_MODE_ECP bit set.  */
  70 #define IEEE1284_MODE_NIBBLE             0
  71 #define IEEE1284_MODE_BYTE              (1<<0)
  72 #define IEEE1284_MODE_COMPAT            (1<<8)
  73 #define IEEE1284_MODE_BECP              (1<<9) /* Bounded ECP mode */
  74 #define IEEE1284_MODE_ECP               (1<<4)
  75 #define IEEE1284_MODE_ECPRLE            (IEEE1284_MODE_ECP | (1<<5))
  76 #define IEEE1284_MODE_ECPSWE            (1<<10) /* Software-emulated */
  77 #define IEEE1284_MODE_EPP               (1<<6)
  78 #define IEEE1284_MODE_EPPSL             (1<<11) /* EPP 1.7 */
  79 #define IEEE1284_MODE_EPPSWE            (1<<12) /* Software-emulated */
  80 #define IEEE1284_DEVICEID               (1<<2)  /* This is a flag */
  81 #define IEEE1284_EXT_LINK               (1<<14) /* This flag causes the
  82                                                  * extensibility link to
  83                                                  * be requested, using
  84                                                  * bits 0-6. */
  85
  86 /* For the benefit of parport_read/write, you can use these with
  87  * parport_negotiate to use address operations.  They have no effect
  88  * other than to make parport_read/write use address transfers. */
  89 #define IEEE1284_ADDR                   (1<<13) /* This is a flag */
  90 #define IEEE1284_DATA                    0      /* So is this */
  91
  92 /* Flags for block transfer operations. */
  93 #define PARPORT_EPP_FAST                (1<<0) /* Unreliable counts. */
  94 #define PARPORT_W91284PIC               (1<<1) /* have a Warp9 w91284pic in the device */
  95
  96 /* The rest is for the kernel only */
  97 #ifdef __KERNEL__
  98
  99 #include <linux/jiffies.h>
 100 #include <linux/proc_fs.h>
 101 #include <linux/spinlock.h>
 102 #include <linux/wait.h>
 103 #include <asm/system.h>
 104 #include <asm/ptrace.h>
 105 #include <asm/semaphore.h>
 106
 107 /* Define this later. */
 108 struct parport;
 109 struct pardevice;
 110
 111 struct pc_parport_state {
 112         unsigned int ctr;
 113         unsigned int ecr;
 114 };
 115
 116 struct ax_parport_state {
 117         unsigned int ctr;
 118         unsigned int ecr;
 119         unsigned int dcsr;
 120 };
 121
 122 /* used by both parport_amiga and parport_mfc3 */
 123 struct amiga_parport_state {
 124        unsigned char data;     /* ciaa.prb */
 125        unsigned char datadir;  /* ciaa.ddrb */
 126        unsigned char status;   /* ciab.pra & 7 */
 127        unsigned char statusdir;/* ciab.ddrb & 7 */
 128 };
 129
 130 struct ax88796_parport_state {
 131         unsigned char cpr;
 132 };
 133
 134 struct ip32_parport_state {
 135         unsigned int dcr;
 136         unsigned int ecr;
 137 };
 138
 139 struct parport_state {
 140         union {
 141                 struct pc_parport_state pc;
 142                 /* ARC has no state. */
 143                 struct ax_parport_state ax;
 144                 struct amiga_parport_state amiga;
 145                 struct ax88796_parport_state ax88796;
 146                 /* Atari has not state. */
 147                 struct ip32_parport_state ip32;
 148                 void *misc;
 149         } u;
 150 };
 151
 152 struct parport_operations {
 153         /* IBM PC-style virtual registers. */
 154         void (*write_data)(struct parport *, unsigned char);
 155         unsigned char (*read_data)(struct parport *);
 156
 157         void (*write_control)(struct parport *, unsigned char);
 158         unsigned char (*read_control)(struct parport *);
 159         unsigned char (*frob_control)(struct parport *, unsigned char mask,
 160                                       unsigned char val);
 161
 162         unsigned char (*read_status)(struct parport *);
 163
 164         /* IRQs. */
 165         void (*enable_irq)(struct parport *);
 166         void (*disable_irq)(struct parport *);
 167
 168         /* Data direction. */
 169         void (*data_forward) (struct parport *);
 170         void (*data_reverse) (struct parport *);
 171
 172         /* For core parport code. */
 173         void (*init_state)(struct pardevice *, struct parport_state *);
 174         void (*save_state)(struct parport *, struct parport_state *);
 175         void (*restore_state)(struct parport *, struct parport_state *);
 176
 177         /* Block read/write */
 178         size_t (*epp_write_data) (struct parport *port, const void *buf,
 179                                   size_t len, int flags);
 180         size_t (*epp_read_data) (struct parport *port, void *buf, size_t len,
 181                                  int flags);
 182         size_t (*epp_write_addr) (struct parport *port, const void *buf,
 183                                   size_t len, int flags);
 184         size_t (*epp_read_addr) (struct parport *port, void *buf, size_t len,
 185                                  int flags);
 186
 187         size_t (*ecp_write_data) (struct parport *port, const void *buf,
 188                                   size_t len, int flags);
 189         size_t (*ecp_read_data) (struct parport *port, void *buf, size_t len,
 190                                  int flags);
 191         size_t (*ecp_write_addr) (struct parport *port, const void *buf,
 192                                   size_t len, int flags);
 193
 194         size_t (*compat_write_data) (struct parport *port, const void *buf,
 195                                      size_t len, int flags);
 196         size_t (*nibble_read_data) (struct parport *port, void *buf,
 197                                     size_t len, int flags);
 198         size_t (*byte_read_data) (struct parport *port, void *buf,
 199                                   size_t len, int flags);
 200         struct module *owner;
 201 };
 202
 203 struct parport_device_info {
 204         parport_device_class class;
 205         const char *class_name;
 206         const char *mfr;
 207         const char *model;
 208         const char *cmdset;
 209         const char *description;
 210 };
 211
 212 /* Each device can have two callback functions:
 213  *  1) a preemption function, called by the resource manager to request
 214  *     that the driver relinquish control of the port.  The driver should
 215  *     return zero if it agrees to release the port, and nonzero if it
 216  *     refuses.  Do not call parport_release() - the kernel will do this
 217  *     implicitly.
 218  *
 219  *  2) a wake-up function, called by the resource manager to tell drivers
 220  *     that the port is available to be claimed.  If a driver wants to use
 221  *     the port, it should call parport_claim() here.
 222  */
 223
 224 /* A parallel port device */
 225 struct pardevice {
 226         const char *name;
 227         struct parport *port;
 228         int daisy;
 229         int (*preempt)(void *);
 230         void (*wakeup)(void *);
 231         void *private;
 232         void (*irq_func)(int, void *);
 233         unsigned int flags;
 234         struct pardevice *next;
 235         struct pardevice *prev;
 236         struct parport_state *state;     /* saved status over preemption */
 237         wait_queue_head_t wait_q;
 238         unsigned long int time;
 239         unsigned long int timeslice;
 240         volatile long int timeout;
 241         unsigned long waiting;           /* long req'd for set_bit --RR */
 242         struct pardevice *waitprev;
 243         struct pardevice *waitnext;
 244         void * sysctl_table;
 245 };
 246
 247 /* IEEE1284 information */
 248
 249 /* IEEE1284 phases. These are exposed to userland through ppdev IOCTL
 250  * PP[GS]ETPHASE, so do not change existing values. */
 251 enum ieee1284_phase {
 252         IEEE1284_PH_FWD_DATA,
 253         IEEE1284_PH_FWD_IDLE,
 254         IEEE1284_PH_TERMINATE,
 255         IEEE1284_PH_NEGOTIATION,
 256         IEEE1284_PH_HBUSY_DNA,
 257         IEEE1284_PH_REV_IDLE,
 258         IEEE1284_PH_HBUSY_DAVAIL,
 259         IEEE1284_PH_REV_DATA,
 260         IEEE1284_PH_ECP_SETUP,
 261         IEEE1284_PH_ECP_FWD_TO_REV,
 262         IEEE1284_PH_ECP_REV_TO_FWD,
 263         IEEE1284_PH_ECP_DIR_UNKNOWN,
 264 };
 265 struct ieee1284_info {
 266         int mode;
 267         volatile enum ieee1284_phase phase;
 268         struct semaphore irq;
 269 };
 270
 271 /* A parallel port */
 272 struct parport {
 273         unsigned long base;     /* base address */
 274         unsigned long base_hi;  /* base address (hi - ECR) */
 275         unsigned int size;      /* IO extent */
 276         const char *name;
 277         unsigned int modes;
 278         int irq;                /* interrupt (or -1 for none) */
 279         int dma;
 280         int muxport;            /* which muxport (if any) this is */
 281         int portnum;            /* which physical parallel port (not mux) */
 282
 283         struct parport *physport;
 284                                 /* If this is a non-default mux
 285                                    parport, i.e. we're a clone of a real
 286                                    physical port, this is a pointer to that
 287                                    port. The locking is only done in the
 288                                    real port.  For a clone port, the
 289                                    following structure members are
 290                                    meaningless: devices, cad, muxsel,
 291                                    waithead, waittail, flags, pdir,
 292                                    ieee1284, *_lock.
 293
 294                                    It this is a default mux parport, or
 295                                    there is no mux involved, this points to
 296                                    ourself. */
 297
 298         struct pardevice *devices;
 299         struct pardevice *cad;  /* port owner */
 300         int daisy;              /* currently selected daisy addr */
 301         int muxsel;             /* currently selected mux port */
 302
 303         struct pardevice *waithead;
 304         struct pardevice *waittail;
 305
 306         struct list_head list;
 307         unsigned int flags;
 308
 309         void *sysctl_table;
 310         struct parport_device_info probe_info[5]; /* 0-3 + non-IEEE1284.3 */
 311         struct ieee1284_info ieee1284;
 312
 313         struct parport_operations *ops;
 314         void *private_data;     /* for lowlevel driver */
 315
 316         int number;             /* port index - the `n' in `parportn' */
 317         spinlock_t pardevice_lock;
 318         spinlock_t waitlist_lock;
 319         rwlock_t cad_lock;
 320
 321         int spintime;
 322         atomic_t ref_count;
 323
 324         struct list_head full_list;
 325         struct parport *slaves[3];
 326 };
 327
 328 #define DEFAULT_SPIN_TIME 500 /* us */
 329
 330 struct parport_driver {
 331         const char *name;
 332         void (*attach) (struct parport *);
 333         void (*detach) (struct parport *);
 334         struct list_head list;
 335 };
 336
 337 /* parport_register_port registers a new parallel port at the given
 338    address (if one does not already exist) and returns a pointer to it.
 339    This entails claiming the I/O region, IRQ and DMA.  NULL is returned
 340    if initialisation fails. */
 341 struct parport *parport_register_port(unsigned long base, int irq, int dma,
 342                                       struct parport_operations *ops);
 343
 344 /* Once a registered port is ready for high-level drivers to use, the
 345    low-level driver that registered it should announce it.  This will
 346    call the high-level drivers' attach() functions (after things like
 347    determining the IEEE 1284.3 topology of the port and collecting
 348    DeviceIDs). */
 349 void parport_announce_port (struct parport *port);
 350
 351 /* Unregister a port. */
 352 extern void parport_remove_port(struct parport *port);
 353
 354 /* Register a new high-level driver. */
 355 extern int parport_register_driver (struct parport_driver *);
 356
 357 /* Unregister a high-level driver. */
 358 extern void parport_unregister_driver (struct parport_driver *);
 359
 360 /* If parport_register_driver doesn't fit your needs, perhaps
 361  * parport_find_xxx does. */
 362 extern struct parport *parport_find_number (int);
 363 extern struct parport *parport_find_base (unsigned long);
 364
 365 /* Reference counting for ports. */
 366 extern struct parport *parport_get_port (struct parport *);
 367 extern void parport_put_port (struct parport *);
 368
 369 /* parport_register_device declares that a device is connected to a
 370    port, and tells the kernel all it needs to know.
 371    - pf is the preemption function (may be NULL for no callback)
 372    - kf is the wake-up function (may be NULL for no callback)
 373    - irq_func is the interrupt handler (may be NULL for no interrupts)
 374    - handle is a user pointer that gets handed to callback functions.  */
 375 struct pardevice *parport_register_device(struct parport *port,
 376                           const char *name,
 377                           int (*pf)(void *), void (*kf)(void *),
 378                           void (*irq_func)(int, void *),
 379                           int flags, void *handle);
 380
 381 /* parport_unregister unlinks a device from the chain. */
 382 extern void parport_unregister_device(struct pardevice *dev);
 383
 384 /* parport_claim tries to gain ownership of the port for a particular
 385    driver.  This may fail (return non-zero) if another driver is busy.
 386    If this driver has registered an interrupt handler, it will be
 387    enabled.  */
 388 extern int parport_claim(struct pardevice *dev);
 389
 390 /* parport_claim_or_block is the same, but sleeps if the port cannot
 391    be claimed.  Return value is 1 if it slept, 0 normally and -errno
 392    on error.  */
 393 extern int parport_claim_or_block(struct pardevice *dev);
 394
 395 /* parport_release reverses a previous parport_claim.  This can never
 396    fail, though the effects are undefined (except that they are bad)
 397    if you didn't previously own the port.  Once you have released the
 398    port you should make sure that neither your code nor the hardware
 399    on the port tries to initiate any communication without first
 400    re-claiming the port.  If you mess with the port state (enabling
 401    ECP for example) you should clean up before releasing the port. */
 402
 403 extern void parport_release(struct pardevice *dev);
 404
 405 /**
 406  * parport_yield - relinquish a parallel port temporarily
 407  * @dev: a device on the parallel port
 408  *
 409  * This function relinquishes the port if it would be helpful to other
 410  * drivers to do so.  Afterwards it tries to reclaim the port using
 411  * parport_claim(), and the return value is the same as for
 412  * parport_claim().  If it fails, the port is left unclaimed and it is
 413  * the driver's responsibility to reclaim the port.
 414  *
 415  * The parport_yield() and parport_yield_blocking() functions are for
 416  * marking points in the driver at which other drivers may claim the
 417  * port and use their devices.  Yielding the port is similar to
 418  * releasing it and reclaiming it, but is more efficient because no
 419  * action is taken if there are no other devices needing the port.  In
 420  * fact, nothing is done even if there are other devices waiting but
 421  * the current device is still within its "timeslice".  The default
 422  * timeslice is half a second, but it can be adjusted via the /proc
 423  * interface.
 424  **/
 425 static __inline__ int parport_yield(struct pardevice *dev)
 426 {
 427         unsigned long int timeslip = (jiffies - dev->time);
 428         if ((dev->port->waithead == NULL) || (timeslip < dev->timeslice))
 429                 return 0;
 430         parport_release(dev);
 431         return parport_claim(dev);
 432 }
 433
 434 /**
 435  * parport_yield_blocking - relinquish a parallel port temporarily
 436  * @dev: a device on the parallel port
 437  *
 438  * This function relinquishes the port if it would be helpful to other
 439  * drivers to do so.  Afterwards it tries to reclaim the port using
 440  * parport_claim_or_block(), and the return value is the same as for
 441  * parport_claim_or_block().
 442  **/
 443 static __inline__ int parport_yield_blocking(struct pardevice *dev)
 444 {
 445         unsigned long int timeslip = (jiffies - dev->time);
 446         if ((dev->port->waithead == NULL) || (timeslip < dev->timeslice))
 447                 return 0;
 448         parport_release(dev);
 449         return parport_claim_or_block(dev);
 450 }
 451
 452 /* Flags used to identify what a device does. */
 453 #define PARPORT_DEV_TRAN                0       /* WARNING !! DEPRECATED !! */
 454 #define PARPORT_DEV_LURK                (1<<0)  /* WARNING !! DEPRECATED !! */
 455 #define PARPORT_DEV_EXCL                (1<<1)  /* Need exclusive access. */
 456
 457 #define PARPORT_FLAG_EXCL               (1<<1)  /* EXCL driver registered. */
 458
 459 /* IEEE1284 functions */
 460 extern void parport_ieee1284_interrupt (int, void *);
 461 extern int parport_negotiate (struct parport *, int mode);
 462 extern ssize_t parport_write (struct parport *, const void *buf, size_t len);
 463 extern ssize_t parport_read (struct parport *, void *buf, size_t len);
 464
 465 #define PARPORT_INACTIVITY_O_NONBLOCK 1
 466 extern long parport_set_timeout (struct pardevice *, long inactivity);
 467
 468 extern int parport_wait_event (struct parport *, long timeout);
 469 extern int parport_wait_peripheral (struct parport *port,
 470                                     unsigned char mask,
 471                                     unsigned char val);
 472 extern int parport_poll_peripheral (struct parport *port,
 473                                     unsigned char mask,
 474                                     unsigned char val,
 475                                     int usec);
 476
 477 /* For architectural drivers */
 478 extern size_t parport_ieee1284_write_compat (struct parport *,
 479                                              const void *, size_t, int);
 480 extern size_t parport_ieee1284_read_nibble (struct parport *,
 481                                             void *, size_t, int);
 482 extern size_t parport_ieee1284_read_byte (struct parport *,
 483                                           void *, size_t, int);
 484 extern size_t parport_ieee1284_ecp_read_data (struct parport *,
 485                                               void *, size_t, int);
 486 extern size_t parport_ieee1284_ecp_write_data (struct parport *,
 487                                                const void *, size_t, int);
 488 extern size_t parport_ieee1284_ecp_write_addr (struct parport *,
 489                                                const void *, size_t, int);
 490 extern size_t parport_ieee1284_epp_write_data (struct parport *,
 491                                                const void *, size_t, int);
 492 extern size_t parport_ieee1284_epp_read_data (struct parport *,
 493                                               void *, size_t, int);
 494 extern size_t parport_ieee1284_epp_write_addr (struct parport *,
 495                                                const void *, size_t, int);
 496 extern size_t parport_ieee1284_epp_read_addr (struct parport *,
 497                                               void *, size_t, int);
 498
 499 /* IEEE1284.3 functions */
 500 extern int parport_daisy_init (struct parport *port);
 501 extern void parport_daisy_fini (struct parport *port);
 502 extern struct pardevice *parport_open (int devnum, const char *name,
 503                                        int (*pf) (void *),
 504                                        void (*kf) (void *),
 505                                        void (*irqf) (int, void *),
 506                                        int flags, void *handle);
 507 extern void parport_close (struct pardevice *dev);
 508 extern ssize_t parport_device_id (int devnum, char *buffer, size_t len);
 509 extern int parport_device_num (int parport, int mux, int daisy);
 510 extern void parport_daisy_deselect_all (struct parport *port);
 511 extern int parport_daisy_select (struct parport *port, int daisy, int mode);
 512
 513 /* Lowlevel drivers _can_ call this support function to handle irqs.  */
 514 static __inline__ void parport_generic_irq(int irq, struct parport *port)
 515 {
 516         parport_ieee1284_interrupt (irq, port);
 517         read_lock(&port->cad_lock);
 518         if (port->cad && port->cad->irq_func)
 519                 port->cad->irq_func(irq, port->cad->private);
 520         read_unlock(&port->cad_lock);
 521 }
 522
 523 /* Prototypes from parport_procfs */
 524 extern int parport_proc_register(struct parport *pp);
 525 extern int parport_proc_unregister(struct parport *pp);
 526 extern int parport_device_proc_register(struct pardevice *device);
 527 extern int parport_device_proc_unregister(struct pardevice *device);
 528
 529 /* If PC hardware is the only type supported, we can optimise a bit.  */
 530 #if !defined(CONFIG_PARPORT_NOT_PC)
 531
 532 #include <linux/parport_pc.h>
 533 #define parport_write_data(p,x)            parport_pc_write_data(p,x)
 534 #define parport_read_data(p)               parport_pc_read_data(p)
 535 #define parport_write_control(p,x)         parport_pc_write_control(p,x)
 536 #define parport_read_control(p)            parport_pc_read_control(p)
 537 #define parport_frob_control(p,m,v)        parport_pc_frob_control(p,m,v)
 538 #define parport_read_status(p)             parport_pc_read_status(p)
 539 #define parport_enable_irq(p)              parport_pc_enable_irq(p)
 540 #define parport_disable_irq(p)             parport_pc_disable_irq(p)
 541 #define parport_data_forward(p)            parport_pc_data_forward(p)
 542 #define parport_data_reverse(p)            parport_pc_data_reverse(p)
 543
 544 #else  /*  !CONFIG_PARPORT_NOT_PC  */
 545
 546 /* Generic operations vector through the dispatch table. */
 547 #define parport_write_data(p,x)            (p)->ops->write_data(p,x)
 548 #define parport_read_data(p)               (p)->ops->read_data(p)
 549 #define parport_write_control(p,x)         (p)->ops->write_control(p,x)
 550 #define parport_read_control(p)            (p)->ops->read_control(p)
 551 #define parport_frob_control(p,m,v)        (p)->ops->frob_control(p,m,v)
 552 #define parport_read_status(p)             (p)->ops->read_status(p)
 553 #define parport_enable_irq(p)              (p)->ops->enable_irq(p)
 554 #define parport_disable_irq(p)             (p)->ops->disable_irq(p)
 555 #define parport_data_forward(p)            (p)->ops->data_forward(p)
 556 #define parport_data_reverse(p)            (p)->ops->data_reverse(p)
 557
 558 #endif /*  !CONFIG_PARPORT_NOT_PC  */
 559
 560 #endif /* __KERNEL__ */
 561 #endif /* _PARPORT_H_ */