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/*-
* Copyright (c) 1997, 1998, 1999 Nicolas Souchu
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*
*/
#ifndef __PPBCONF_H
#define __PPBCONF_H
#include <sys/queue.h>
/*
* Parallel Port Bus sleep/wakeup queue.
*/
#define PPBPRI (PZERO+8)
/*
* Parallel Port Chipset mode masks.
* NIBBLE mode is supposed to be available under each other modes.
*/
#define PPB_COMPATIBLE 0x0 /* Centronics compatible mode */
#define PPB_NIBBLE 0x1 /* reverse 4 bit mode */
#define PPB_PS2 0x2 /* PS/2 byte mode */
#define PPB_EPP 0x4 /* EPP mode, 32 bit */
#define PPB_ECP 0x8 /* ECP mode */
/* mode aliases */
#define PPB_SPP PPB_NIBBLE|PPB_PS2
#define PPB_BYTE PPB_PS2
#define PPB_MASK 0x0f
#define PPB_OPTIONS_MASK 0xf0
#define PPB_IS_EPP(mode) (mode & PPB_EPP)
#define PPB_IN_EPP_MODE(bus) (PPB_IS_EPP (ppb_get_mode (bus)))
#define PPB_IN_NIBBLE_MODE(bus) (ppb_get_mode (bus) & PPB_NIBBLE)
#define PPB_IN_PS2_MODE(bus) (ppb_get_mode (bus) & PPB_PS2)
#define n(flags) (~(flags) & (flags))
/*
* Parallel Port Chipset control bits.
*/
#define STROBE 0x01
#define AUTOFEED 0x02
#define nINIT 0x04
#define SELECTIN 0x08
#define IRQENABLE 0x10
#define PCD 0x20
#define nSTROBE n(STROBE)
#define nAUTOFEED n(AUTOFEED)
#define INIT n(nINIT)
#define nSELECTIN n(SELECTIN)
#define nPCD n(PCD)
/*
* Parallel Port Chipset status bits.
*/
#define TIMEOUT 0x01
#define nFAULT 0x08
#define SELECT 0x10
#define PERROR 0x20
#define nACK 0x40
#define nBUSY 0x80
/*
* Structure to store status information.
*/
struct ppb_status {
unsigned char status;
unsigned int timeout:1;
unsigned int error:1;
unsigned int select:1;
unsigned int paper_end:1;
unsigned int ack:1;
unsigned int busy:1;
};
/* Parallel port bus I/O opcodes */
#define PPB_OUTSB_EPP 1
#define PPB_OUTSW_EPP 2
#define PPB_OUTSL_EPP 3
#define PPB_INSB_EPP 4
#define PPB_INSW_EPP 5
#define PPB_INSL_EPP 6
#define PPB_RDTR 7
#define PPB_RSTR 8
#define PPB_RCTR 9
#define PPB_REPP_A 10
#define PPB_REPP_D 11
#define PPB_RECR 12
#define PPB_RFIFO 13
#define PPB_WDTR 14
#define PPB_WSTR 15
#define PPB_WCTR 16
#define PPB_WEPP_A 17
#define PPB_WEPP_D 18
#define PPB_WECR 19
#define PPB_WFIFO 20
/*
* How tsleep() is called in ppb_request_bus().
*/
#define PPB_DONTWAIT 0
#define PPB_NOINTR 0
#define PPB_WAIT 0x1
#define PPB_INTR 0x2
#define PPB_POLL 0x4
#define PPB_FOREVER -1
/*
* Microsequence stuff.
*/
#define PPB_MS_MAXLEN 64 /* XXX according to MS_INS_MASK */
#define PPB_MS_MAXARGS 3 /* according to MS_ARG_MASK */
/* maximum number of mode dependent
* submicrosequences for in/out operations
*/
#define PPB_MAX_XFER 6
union ppb_insarg {
int i;
void *p;
char *c;
int (* f)(void *, char *);
};
struct ppb_microseq {
int opcode; /* microins. opcode */
union ppb_insarg arg[PPB_MS_MAXARGS]; /* arguments */
};
/* microseqences used for GET/PUT operations */
struct ppb_xfer {
struct ppb_microseq *loop; /* the loop microsequence */
};
/*
* Parallel Port Bus Device structure.
*/
struct ppb_data; /* see below */
struct ppb_context {
int valid; /* 1 if the struct is valid */
int mode; /* XXX chipset operating mode */
struct microseq *curpc; /* pc in curmsq */
struct microseq *curmsq; /* currently executed microseqence */
};
/*
* List of IVARS available to ppb device drivers
*/
#define PPBUS_IVAR_MODE 0
/* other fields are reserved to the ppbus internals */
struct ppb_device {
const char *name; /* name of the device */
u_int flags; /* flags */
struct ppb_context ctx; /* context of the device */
/* mode dependent get msq. If NULL,
* IEEE1284 code is used */
struct ppb_xfer
get_xfer[PPB_MAX_XFER];
/* mode dependent put msq. If NULL,
* IEEE1284 code is used */
struct ppb_xfer
put_xfer[PPB_MAX_XFER];
driver_intr_t *intr_hook;
void *intr_arg;
};
/* EPP standards */
#define EPP_1_9 0x0 /* default */
#define EPP_1_7 0x1
/* Parallel Port Chipset IVARS */ /* elsewhere XXX */
#define PPC_IVAR_EPP_PROTO 0
#define PPC_IVAR_LOCK 1
#define PPC_IVAR_INTR_HANDLER 2
/*
* Maximum size of the PnP info string
*/
#define PPB_PnP_STRING_SIZE 256 /* XXX */
/*
* Parallel Port Bus structure.
*/
struct ppb_data {
#define PPB_PnP_PRINTER 0
#define PPB_PnP_MODEM 1
#define PPB_PnP_NET 2
#define PPB_PnP_HDC 3
#define PPB_PnP_PCMCIA 4
#define PPB_PnP_MEDIA 5
#define PPB_PnP_FDC 6
#define PPB_PnP_PORTS 7
#define PPB_PnP_SCANNER 8
#define PPB_PnP_DIGICAM 9
#define PPB_PnP_UNKNOWN 10
int class_id; /* not a PnP device if class_id < 0 */
int state; /* current IEEE1284 state */
int error; /* last IEEE1284 error */
int mode; /* IEEE 1284-1994 mode
* NIBBLE, PS2, EPP or ECP */
device_t ppb_owner; /* device which owns the bus */
struct mtx *ppc_lock; /* lock of parent device */
struct resource *ppc_irq_res;
};
struct callout;
typedef int (*ppc_intr_handler)(void *);
#ifdef _KERNEL
extern int ppb_attach_device(device_t);
extern int ppb_request_bus(device_t, device_t, int);
extern int ppb_release_bus(device_t, device_t);
/* bus related functions */
extern void ppb_lock(device_t);
extern void ppb_unlock(device_t);
extern void _ppb_assert_locked(device_t, const char *, int);
extern void ppb_init_callout(device_t, struct callout *, int);
extern int ppb_sleep(device_t, void *, int, const char *, int);
extern int ppb_get_status(device_t, struct ppb_status *);
extern int ppb_poll_bus(device_t, int, char, char, int);
extern int ppb_reset_epp_timeout(device_t);
extern int ppb_ecp_sync(device_t);
extern int ppb_get_epp_protocol(device_t);
extern int ppb_set_mode(device_t, int); /* returns old mode */
extern int ppb_get_mode(device_t); /* returns current mode */
extern int ppb_write(device_t, char *, int, int);
#ifdef INVARIANTS
#define ppb_assert_locked(dev) _ppb_assert_locked(dev, __FILE__, __LINE__)
#else
#define ppb_assert_locked(dev)
#endif
#endif /* _KERNEL */
#endif /* !__PPBCONF_H */
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