ppdev.h

simple MIPS EJTAG u-boot loader

/*
 * linux/drivers/char/ppdev.h
 *
 * User-space parallel port device driver (header file).
 *
 * Copyright (C) 1998-9 Tim Waugh <[e-mail]>
 *
 * 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.
 *
 * Added PPGETTIME/PPSETTIME, Fred Barnes, 1999
 * Added PPGETMODES/PPGETMODE/PPGETPHASE, Fred Barnes <[e-mail]>, 03/01/2001
 */

#define PP_MAJOR	99

#define PP_IOCTL	'p'

/* Set mode for read/write (e.g. IEEE1284_MODE_EPP) */
#define PPSETMODE	_IOW(PP_IOCTL, 0x80, int)

/* Read status */
#define PPRSTATUS	_IOR(PP_IOCTL, 0x81, unsigned char)
#define PPWSTATUS	OBSOLETE__IOW(PP_IOCTL, 0x82, unsigned char)

/* Read/write control */
#define PPRCONTROL	_IOR(PP_IOCTL, 0x83, unsigned char)
#define PPWCONTROL	_IOW(PP_IOCTL, 0x84, unsigned char)

struct ppdev_frob_struct {
	unsigned char mask;
	unsigned char val;
};
#define PPFCONTROL      _IOW(PP_IOCTL, 0x8e, struct ppdev_frob_struct)

/* Read/write data */
#define PPRDATA		_IOR(PP_IOCTL, 0x85, unsigned char)
#define PPWDATA		_IOW(PP_IOCTL, 0x86, unsigned char)

/* Read/write econtrol (not used) */
#define PPRECONTROL	OBSOLETE__IOR(PP_IOCTL, 0x87, unsigned char)
#define PPWECONTROL	OBSOLETE__IOW(PP_IOCTL, 0x88, unsigned char)

/* Read/write FIFO (not used) */
#define PPRFIFO		OBSOLETE__IOR(PP_IOCTL, 0x89, unsigned char)
#define PPWFIFO		OBSOLETE__IOW(PP_IOCTL, 0x8a, unsigned char)

/* Claim the port to start using it */
#define PPCLAIM		_IO(PP_IOCTL, 0x8b)

/* Release the port when you aren't using it */
#define PPRELEASE	_IO(PP_IOCTL, 0x8c)

/* Yield the port (release it if another driver is waiting,
 * then reclaim) */
#define PPYIELD		_IO(PP_IOCTL, 0x8d)

/* Register device exclusively (must be before PPCLAIM). */
#define PPEXCL		_IO(PP_IOCTL, 0x8f)

/* Data line direction: non-zero for input mode. */
#define PPDATADIR	_IOW(PP_IOCTL, 0x90, int)

/* Negotiate a particular IEEE 1284 mode. */
#define PPNEGOT		_IOW(PP_IOCTL, 0x91, int)

/* Set control lines when an interrupt occurs. */
#define PPWCTLONIRQ	_IOW(PP_IOCTL, 0x92, unsigned char)

/* Clear (and return) interrupt count. */
#define PPCLRIRQ	_IOR(PP_IOCTL, 0x93, int)

/* Set the IEEE 1284 phase that we're in (e.g. IEEE1284_PH_FWD_IDLE) */
#define PPSETPHASE	_IOW(PP_IOCTL, 0x94, int)

/* Set and get port timeout (struct timeval's) */
#define PPGETTIME	_IOR(PP_IOCTL, 0x95, struct timeval)
#define PPSETTIME	_IOW(PP_IOCTL, 0x96, struct timeval)

/* Get available modes (what the hardware can do) */
#define PPGETMODES	_IOR(PP_IOCTL, 0x97, unsigned int)

/* Get the current mode and phaze */
#define PPGETMODE	_IOR(PP_IOCTL, 0x98, int)
#define PPGETPHASE	_IOR(PP_IOCTL, 0x99, int)

/* get/set flags */
#define PPGETFLAGS	_IOR(PP_IOCTL, 0x9a, int)
#define PPSETFLAGS	_IOW(PP_IOCTL, 0x9b, int)

/* flags visible to the world */
#define PP_FASTWRITE	(1<<2)
#define PP_FASTREAD	(1<<3)
#define PP_W91284PIC	(1<<4)

/* only masks user-visible flags */
#define PP_FLAGMASK	(PP_FASTWRITE | PP_FASTREAD | PP_W91284PIC)

/*
 * from parport.h
 */

#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 */

/* IEEE1284 phases */
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
};

/* 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 */

struct parport_device_id {
	const char *pattern;
};