3128fa9a5a
sys/dev/ppbus/ppb_1284.c:296:46: error: implicit conversion from 'int'
to 'char' changes value from 144 to -112 [-Werror,-Wconstant-conversion]
if ((error = do_peripheral_wait(bus, SELECT | nBUSY, 0))) {
~~~~~~~~~~~~~~~~~~ ~~~~~~~^~~~~~~
sys/dev/ppbus/ppb_1284.c:785:48: error: implicit conversion from 'int'
to 'char' changes value from 240 to -16 [-Werror,-Wconstant-conversion]
if (do_1284_wait(bus, nACK | SELECT | PERROR | nBUSY,
~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
sys/dev/ppbus/ppb_1284.c:786:29: error: implicit conversion from 'int'
to 'char' changes value from 240 to -16 [-Werror,-Wconstant-conversion]
nACK | SELECT | PERROR | nBUSY)) {
~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
This is because nBUSY is 0x80, so the plain char argument is wrapped to
a negative value. Fix this in a minimal fashion, by using uint8_t in a
few places.
Reviewed by: emaste
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D7771
282 lines
7.0 KiB
C
282 lines
7.0 KiB
C
/*-
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* Copyright (c) 1997, 1998, 1999 Nicolas Souchu
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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#ifndef __PPBCONF_H
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#define __PPBCONF_H
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#define n(flags) (~(flags) & (flags))
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/*
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* Parallel Port Chipset control bits.
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*/
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#define STROBE 0x01
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#define AUTOFEED 0x02
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#define nINIT 0x04
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#define SELECTIN 0x08
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#define IRQENABLE 0x10
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#define PCD 0x20
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#define nSTROBE n(STROBE)
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#define nAUTOFEED n(AUTOFEED)
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#define INIT n(nINIT)
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#define nSELECTIN n(SELECTIN)
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#define nPCD n(PCD)
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/*
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* Parallel Port Chipset status bits.
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*/
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#define TIMEOUT 0x01
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#define nFAULT 0x08
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#define SELECT 0x10
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#define PERROR 0x20
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#define nACK 0x40
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#define nBUSY 0x80
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#ifdef _KERNEL
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#include <sys/queue.h>
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/*
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* Parallel Port Bus sleep/wakeup queue.
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*/
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#define PPBPRI (PZERO+8)
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/*
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* Parallel Port Chipset mode masks.
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* NIBBLE mode is supposed to be available under each other modes.
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*/
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#define PPB_COMPATIBLE 0x0 /* Centronics compatible mode */
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#define PPB_NIBBLE 0x1 /* reverse 4 bit mode */
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#define PPB_PS2 0x2 /* PS/2 byte mode */
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#define PPB_EPP 0x4 /* EPP mode, 32 bit */
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#define PPB_ECP 0x8 /* ECP mode */
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/* mode aliases */
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#define PPB_SPP PPB_NIBBLE|PPB_PS2
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#define PPB_BYTE PPB_PS2
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#define PPB_MASK 0x0f
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#define PPB_OPTIONS_MASK 0xf0
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#define PPB_IS_EPP(mode) (mode & PPB_EPP)
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#define PPB_IN_EPP_MODE(bus) (PPB_IS_EPP (ppb_get_mode (bus)))
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#define PPB_IN_NIBBLE_MODE(bus) (ppb_get_mode (bus) & PPB_NIBBLE)
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#define PPB_IN_PS2_MODE(bus) (ppb_get_mode (bus) & PPB_PS2)
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/*
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* Structure to store status information.
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*/
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struct ppb_status {
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unsigned char status;
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unsigned int timeout:1;
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unsigned int error:1;
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unsigned int select:1;
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unsigned int paper_end:1;
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unsigned int ack:1;
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unsigned int busy:1;
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};
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/* Parallel port bus I/O opcodes */
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#define PPB_OUTSB_EPP 1
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#define PPB_OUTSW_EPP 2
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#define PPB_OUTSL_EPP 3
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#define PPB_INSB_EPP 4
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#define PPB_INSW_EPP 5
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#define PPB_INSL_EPP 6
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#define PPB_RDTR 7
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#define PPB_RSTR 8
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#define PPB_RCTR 9
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#define PPB_REPP_A 10
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#define PPB_REPP_D 11
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#define PPB_RECR 12
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#define PPB_RFIFO 13
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#define PPB_WDTR 14
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#define PPB_WSTR 15
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#define PPB_WCTR 16
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#define PPB_WEPP_A 17
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#define PPB_WEPP_D 18
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#define PPB_WECR 19
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#define PPB_WFIFO 20
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/*
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* How tsleep() is called in ppb_request_bus().
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*/
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#define PPB_DONTWAIT 0
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#define PPB_NOINTR 0
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#define PPB_WAIT 0x1
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#define PPB_INTR 0x2
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#define PPB_POLL 0x4
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#define PPB_FOREVER -1
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/*
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* Microsequence stuff.
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*/
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#define PPB_MS_MAXLEN 64 /* XXX according to MS_INS_MASK */
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#define PPB_MS_MAXARGS 3 /* according to MS_ARG_MASK */
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/* maximum number of mode dependent
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* submicrosequences for in/out operations
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*/
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#define PPB_MAX_XFER 6
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union ppb_insarg {
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int i;
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void *p;
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char *c;
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int (* f)(void *, char *);
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};
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struct ppb_microseq {
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int opcode; /* microins. opcode */
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union ppb_insarg arg[PPB_MS_MAXARGS]; /* arguments */
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};
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/* microseqences used for GET/PUT operations */
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struct ppb_xfer {
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struct ppb_microseq *loop; /* the loop microsequence */
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};
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/*
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* Parallel Port Bus Device structure.
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*/
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struct ppb_data; /* see below */
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struct ppb_context {
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int valid; /* 1 if the struct is valid */
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int mode; /* XXX chipset operating mode */
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struct microseq *curpc; /* pc in curmsq */
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struct microseq *curmsq; /* currently executed microseqence */
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};
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/*
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* List of IVARS available to ppb device drivers
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*/
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#define PPBUS_IVAR_MODE 0
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/* other fields are reserved to the ppbus internals */
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struct ppb_device {
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const char *name; /* name of the device */
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u_int flags; /* flags */
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struct ppb_context ctx; /* context of the device */
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/* mode dependent get msq. If NULL,
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* IEEE1284 code is used */
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struct ppb_xfer
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get_xfer[PPB_MAX_XFER];
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/* mode dependent put msq. If NULL,
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* IEEE1284 code is used */
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struct ppb_xfer
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put_xfer[PPB_MAX_XFER];
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driver_intr_t *intr_hook;
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void *intr_arg;
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};
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/* EPP standards */
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#define EPP_1_9 0x0 /* default */
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#define EPP_1_7 0x1
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/* Parallel Port Chipset IVARS */ /* elsewhere XXX */
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#define PPC_IVAR_EPP_PROTO 0
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#define PPC_IVAR_LOCK 1
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#define PPC_IVAR_INTR_HANDLER 2
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/*
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* Maximum size of the PnP info string
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*/
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#define PPB_PnP_STRING_SIZE 256 /* XXX */
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/*
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* Parallel Port Bus structure.
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*/
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struct ppb_data {
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#define PPB_PnP_PRINTER 0
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#define PPB_PnP_MODEM 1
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#define PPB_PnP_NET 2
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#define PPB_PnP_HDC 3
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#define PPB_PnP_PCMCIA 4
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#define PPB_PnP_MEDIA 5
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#define PPB_PnP_FDC 6
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#define PPB_PnP_PORTS 7
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#define PPB_PnP_SCANNER 8
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#define PPB_PnP_DIGICAM 9
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#define PPB_PnP_UNKNOWN 10
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int class_id; /* not a PnP device if class_id < 0 */
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int state; /* current IEEE1284 state */
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int error; /* last IEEE1284 error */
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int mode; /* IEEE 1284-1994 mode
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* NIBBLE, PS2, EPP or ECP */
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device_t ppb_owner; /* device which owns the bus */
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struct mtx *ppc_lock; /* lock of parent device */
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struct resource *ppc_irq_res;
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};
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struct callout;
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typedef int (*ppc_intr_handler)(void *);
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extern int ppb_attach_device(device_t);
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extern int ppb_request_bus(device_t, device_t, int);
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extern int ppb_release_bus(device_t, device_t);
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/* bus related functions */
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extern void ppb_lock(device_t);
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extern void ppb_unlock(device_t);
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extern void _ppb_assert_locked(device_t, const char *, int);
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extern void ppb_init_callout(device_t, struct callout *, int);
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extern int ppb_sleep(device_t, void *, int, const char *, int);
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extern int ppb_get_status(device_t, struct ppb_status *);
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extern int ppb_poll_bus(device_t, int, uint8_t, uint8_t, int);
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extern int ppb_reset_epp_timeout(device_t);
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extern int ppb_ecp_sync(device_t);
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extern int ppb_get_epp_protocol(device_t);
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extern int ppb_set_mode(device_t, int); /* returns old mode */
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extern int ppb_get_mode(device_t); /* returns current mode */
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extern int ppb_write(device_t, char *, int, int);
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#ifdef INVARIANTS
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#define ppb_assert_locked(dev) _ppb_assert_locked(dev, __FILE__, __LINE__)
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#else
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#define ppb_assert_locked(dev)
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#endif
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#endif /* _KERNEL */
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#endif /* !__PPBCONF_H */
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