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freebsd-skq/sys/dev/ppbus/ppbconf.h
Mike Smith 46f3ff7986 Major ppbus updates from the author. 
- ppbus now supports PLIP via the if_plip driver
 - ieee1284 infrastructure added, including parallel-port PnP
 - port microsequencer added, for scripting the sort of port I/O
   that is common with parallel devices without endless calls up and down
   through the driver structure.
 - improved bus ownership behaviour among the ppbus-using drivers.
 - improved I/O chipset feature detection

The vpo driver is now implemented using the microsequencer, leading to
some performance improvements as well as providing an extensive example
of its use.

Reviewed by:	msmith
Submitted by:	Nicolas Souchu <Nicolas.Souchu@prism.uvsq.fr>
1998-08-03 19:14:33 +00:00

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/*-
* Copyright (c) 1997, 1998 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.
*
* $Id: ppbconf.h,v 1.6 1998/06/07 19:44:21 phk Exp $
*
*/
#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 */
#define PPB_SPP PPB_NIBBLE|PPB_PS2
#define PPB_IS_EPP(mode) (mode & PPB_EPP)
#define PPB_IN_EPP_MODE(dev) (PPB_IS_EPP (ppb_get_mode (dev)))
#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 ERROR 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;
};
/*
* How tsleep() is called in ppb_request_bus().
*/
#define PPB_DONTWAIT 0
#define PPB_NOINTR 0
#define PPB_WAIT 0x1
#define PPB_INTR 0x2
/*
* 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;
char c;
void *p;
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 */
};
struct ppb_device {
int id_unit; /* unit of the device */
char *name; /* name of the device */
ushort mode; /* current mode of the device */
ushort avm; /* available modes of the device */
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];
void (*intr)(int); /* interrupt handler */
struct ppb_data *ppb; /* link to the ppbus */
LIST_ENTRY(ppb_device) chain; /* list of devices on the bus */
};
/*
* Parallel Port Bus Adapter structure.
*/
struct ppb_adapter {
void (*intr_handler)(int);
void (*reset_epp_timeout)(int);
void (*ecp_sync)(int);
int (*exec_microseq)(int, struct ppb_microseq *, int *);
int (*setmode)(int, int);
void (*outsb_epp)(int, char *, int);
void (*outsw_epp)(int, char *, int);
void (*outsl_epp)(int, char *, int);
void (*insb_epp)(int, char *, int);
void (*insw_epp)(int, char *, int);
void (*insl_epp)(int, char *, int);
char (*r_dtr)(int);
char (*r_str)(int);
char (*r_ctr)(int);
char (*r_epp)(int);
char (*r_ecr)(int);
char (*r_fifo)(int);
void (*w_dtr)(int, char);
void (*w_str)(int, char);
void (*w_ctr)(int, char);
void (*w_epp)(int, char);
void (*w_ecr)(int, char);
void (*w_fifo)(int, char);
};
/*
* ppb_link structure.
*/
struct ppb_link {
int adapter_unit; /* unit of the adapter */
int base; /* base address of the port */
int id_irq; /* != 0 if irq enabled */
#define EPP_1_9 0x0 /* default */
#define EPP_1_7 0x1
int epp_protocol; /* EPP protocol: 0=1.9, 1=1.7 */
struct ppb_adapter *adapter; /* link to the ppc adapter */
struct ppb_data *ppbus; /* link to the ppbus */
};
/*
* Maximum size of the PnP info string
*/
#define PPB_PnP_STRING_SIZE 128 /* 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 */
ushort mode; /* IEEE 1284-1994 mode
* NIBBLE, PS2, EPP or ECP */
ushort avm; /* IEEE 1284-1994 available
* modes */
struct ppb_link *ppb_link; /* link to the adapter */
struct ppb_device *ppb_owner; /* device which owns the bus */
LIST_HEAD(, ppb_device) ppb_devs; /* list of devices on the bus */
LIST_ENTRY(ppb_data) ppb_chain; /* list of busses */
};
/*
* Parallel Port Bus driver structure.
*/
struct ppb_driver
{
struct ppb_device *(*probe)(struct ppb_data *ppb);
int (*attach)(struct ppb_device *pdp);
char *name;
};
extern struct linker_set ppbdriver_set;
extern struct ppb_data *ppb_alloc_bus(void);
extern struct ppb_data *ppb_next_bus(struct ppb_data *);
extern struct ppb_data *ppb_lookup_bus(int);
extern struct ppb_data *ppb_lookup_link(int);
extern int ppb_attach_device(struct ppb_device *);
extern void ppb_remove_device(struct ppb_device *);
extern int ppb_attachdevs(struct ppb_data *);
extern int ppb_request_bus(struct ppb_device *, int);
extern int ppb_release_bus(struct ppb_device *);
extern void ppb_intr(struct ppb_link *);
extern int ppb_poll_device(struct ppb_device *, int, char, char, int);
extern int ppb_reset_epp_timeout(struct ppb_device *);
extern int ppb_ecp_sync(struct ppb_device *);
extern int ppb_get_status(struct ppb_device *, struct ppb_status *);
extern int ppb_set_mode(struct ppb_device *, int);
/*
* These are defined as macros for speedup.
*/
#define ppb_get_base_addr(dev) ((dev)->ppb->ppb_link->base)
#define ppb_get_epp_protocol(dev) ((dev)->ppb->ppb_link->epp_protocol)
#define ppb_get_irq(dev) ((dev)->ppb->ppb_link->id_irq)
#define ppb_get_mode(dev) ((dev)->mode)
#define ppb_outsb_epp(dev,buf,cnt) \
(*(dev)->ppb->ppb_link->adapter->outsb_epp) \
((dev)->ppb->ppb_link->adapter_unit, buf, cnt)
#define ppb_outsw_epp(dev,buf,cnt) \
(*(dev)->ppb->ppb_link->adapter->outsw_epp) \
((dev)->ppb->ppb_link->adapter_unit, buf, cnt)
#define ppb_outsl_epp(dev,buf,cnt) \
(*(dev)->ppb->ppb_link->adapter->outsl_epp) \
((dev)->ppb->ppb_link->adapter_unit, buf, cnt)
#define ppb_insb_epp(dev,buf,cnt) \
(*(dev)->ppb->ppb_link->adapter->insb_epp) \
((dev)->ppb->ppb_link->adapter_unit, buf, cnt)
#define ppb_insw_epp(dev,buf,cnt) \
(*(dev)->ppb->ppb_link->adapter->insw_epp) \
((dev)->ppb->ppb_link->adapter_unit, buf, cnt)
#define ppb_insl_epp(dev,buf,cnt) \
(*(dev)->ppb->ppb_link->adapter->insl_epp) \
((dev)->ppb->ppb_link->adapter_unit, buf, cnt)
#define ppb_repp(dev) (*(dev)->ppb->ppb_link->adapter->r_epp) \
((dev)->ppb->ppb_link->adapter_unit)
#define ppb_recr(dev) (*(dev)->ppb->ppb_link->adapter->r_ecr) \
((dev)->ppb->ppb_link->adapter_unit)
#define ppb_rfifo(dev) (*(dev)->ppb->ppb_link->adapter->r_fifo) \
((dev)->ppb->ppb_link->adapter_unit)
#define ppb_wepp(dev,byte) (*(dev)->ppb->ppb_link->adapter->w_epp) \
((dev)->ppb->ppb_link->adapter_unit, byte)
#define ppb_wecr(dev,byte) (*(dev)->ppb->ppb_link->adapter->w_ecr) \
((dev)->ppb->ppb_link->adapter_unit, byte)
#define ppb_wfifo(dev,byte) (*(dev)->ppb->ppb_link->adapter->w_fifo) \
((dev)->ppb->ppb_link->adapter_unit, byte)
#define ppb_rdtr(dev) (*(dev)->ppb->ppb_link->adapter->r_dtr) \
((dev)->ppb->ppb_link->adapter_unit)
#define ppb_rstr(dev) (*(dev)->ppb->ppb_link->adapter->r_str) \
((dev)->ppb->ppb_link->adapter_unit)
#define ppb_rctr(dev) (*(dev)->ppb->ppb_link->adapter->r_ctr) \
((dev)->ppb->ppb_link->adapter_unit)
#define ppb_wdtr(dev,byte) (*(dev)->ppb->ppb_link->adapter->w_dtr) \
((dev)->ppb->ppb_link->adapter_unit, byte)
#define ppb_wstr(dev,byte) (*(dev)->ppb->ppb_link->adapter->w_str) \
((dev)->ppb->ppb_link->adapter_unit, byte)
#define ppb_wctr(dev,byte) (*(dev)->ppb->ppb_link->adapter->w_ctr) \
((dev)->ppb->ppb_link->adapter_unit, byte)
#endif
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