olpt.c revision 58142
148006Skato/* 248006Skato * Copyright (c) 1990 William F. Jolitz, TeleMuse 348006Skato * All rights reserved. 448006Skato * 548006Skato * Redistribution and use in source and binary forms, with or without 648006Skato * modification, are permitted provided that the following conditions 748006Skato * are met: 848006Skato * 1. Redistributions of source code must retain the above copyright 948006Skato * notice, this list of conditions and the following disclaimer. 1048006Skato * 2. Redistributions in binary form must reproduce the above copyright 1148006Skato * notice, this list of conditions and the following disclaimer in the 1248006Skato * documentation and/or other materials provided with the distribution. 1348006Skato * 3. All advertising materials mentioning features or use of this software 1448006Skato * must display the following acknowledgement: 1548006Skato * This software is a component of "386BSD" developed by 1648006Skato * William F. Jolitz, TeleMuse. 1748006Skato * 4. Neither the name of the developer nor the name "386BSD" 1848006Skato * may be used to endorse or promote products derived from this software 1948006Skato * without specific prior written permission. 2048006Skato * 2148006Skato * THIS SOFTWARE IS A COMPONENT OF 386BSD DEVELOPED BY WILLIAM F. JOLITZ 2248006Skato * AND IS INTENDED FOR RESEARCH AND EDUCATIONAL PURPOSES ONLY. THIS 2348006Skato * SOFTWARE SHOULD NOT BE CONSIDERED TO BE A COMMERCIAL PRODUCT. 2448006Skato * THE DEVELOPER URGES THAT USERS WHO REQUIRE A COMMERCIAL PRODUCT 2548006Skato * NOT MAKE USE OF THIS WORK. 2648006Skato * 2748006Skato * FOR USERS WHO WISH TO UNDERSTAND THE 386BSD SYSTEM DEVELOPED 2848006Skato * BY WILLIAM F. JOLITZ, WE RECOMMEND THE USER STUDY WRITTEN 2948006Skato * REFERENCES SUCH AS THE "PORTING UNIX TO THE 386" SERIES 3048006Skato * (BEGINNING JANUARY 1991 "DR. DOBBS JOURNAL", USA AND BEGINNING 3148006Skato * JUNE 1991 "UNIX MAGAZIN", GERMANY) BY WILLIAM F. JOLITZ AND 3248006Skato * LYNNE GREER JOLITZ, AS WELL AS OTHER BOOKS ON UNIX AND THE 3348006Skato * ON-LINE 386BSD USER MANUAL BEFORE USE. A BOOK DISCUSSING THE INTERNALS 3448006Skato * OF 386BSD ENTITLED "386BSD FROM THE INSIDE OUT" WILL BE AVAILABLE LATE 1992. 3548006Skato * 3648006Skato * THIS SOFTWARE IS PROVIDED BY THE DEVELOPER ``AS IS'' AND 3748006Skato * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 3848006Skato * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 3948006Skato * ARE DISCLAIMED. IN NO EVENT SHALL THE DEVELOPER BE LIABLE 4048006Skato * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4148006Skato * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4248006Skato * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4348006Skato * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 4448006Skato * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 4548006Skato * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 4648006Skato * SUCH DAMAGE. 4748006Skato * 4848006Skato * from: unknown origin, 386BSD 0.1 4950477Speter * $FreeBSD: head/sys/pc98/cbus/olpt.c 58142 2000-03-16 12:06:29Z nyan $ 5048006Skato */ 5148006Skato 5248006Skato/* 5348006Skato * Device Driver for AT parallel printer port 5448006Skato * Written by William Jolitz 12/18/90 5548006Skato */ 5648006Skato 5748006Skato/* 5848006Skato * Parallel port TCP/IP interfaces added. I looked at the driver from 5948006Skato * MACH but this is a complete rewrite, and btw. incompatible, and it 6048006Skato * should perform better too. I have never run the MACH driver though. 6148006Skato * 6248006Skato * This driver sends two bytes (0x08, 0x00) in front of each packet, 6348006Skato * to allow us to distinguish another format later. 6448006Skato * 6548006Skato * Now added an Linux/Crynwr compatibility mode which is enabled using 6648006Skato * IF_LINK0 - Tim Wilkinson. 6748006Skato * 6848006Skato * TODO: 6948006Skato * Make HDLC/PPP mode, use IF_LLC1 to enable. 7048006Skato * 7148006Skato * Connect the two computers using a Laplink parallel cable to use this 7248006Skato * feature: 7348006Skato * 7448006Skato * +----------------------------------------+ 7548006Skato * |A-name A-End B-End Descr. Port/Bit | 7648006Skato * +----------------------------------------+ 7748006Skato * |DATA0 2 15 Data 0/0x01 | 7848006Skato * |-ERROR 15 2 1/0x08 | 7948006Skato * +----------------------------------------+ 8048006Skato * |DATA1 3 13 Data 0/0x02 | 8148006Skato * |+SLCT 13 3 1/0x10 | 8248006Skato * +----------------------------------------+ 8348006Skato * |DATA2 4 12 Data 0/0x04 | 8448006Skato * |+PE 12 4 1/0x20 | 8548006Skato * +----------------------------------------+ 8648006Skato * |DATA3 5 10 Strobe 0/0x08 | 8748006Skato * |-ACK 10 5 1/0x40 | 8848006Skato * +----------------------------------------+ 8948006Skato * |DATA4 6 11 Data 0/0x10 | 9048006Skato * |BUSY 11 6 1/~0x80 | 9148006Skato * +----------------------------------------+ 9248006Skato * |GND 18-25 18-25 GND - | 9348006Skato * +----------------------------------------+ 9448006Skato * 9548006Skato * Expect transfer-rates up to 75 kbyte/sec. 9648006Skato * 9748006Skato * If GCC could correctly grok 9848006Skato * register int port asm("edx") 9948006Skato * the code would be cleaner 10048006Skato * 10148006Skato * Poul-Henning Kamp <phk@freebsd.org> 10248006Skato */ 10348006Skato 10448006Skato#include "olpt.h" 10548006Skato#include "opt_inet.h" 10648006Skato#ifdef PC98 10748006Skato#undef INET /* PLIP is not supported for old PC-98 */ 10858142Snyan#define LPT_DRVINIT_AT_ATTACH /* avoid conflicting with lpt on ppbus */ 10948006Skato#endif 11048006Skato 11148006Skato#include <sys/param.h> 11248006Skato#include <sys/systm.h> 11348006Skato#include <sys/conf.h> 11448006Skato#include <sys/buf.h> 11548006Skato#include <sys/kernel.h> 11648006Skato#include <sys/uio.h> 11748006Skato#include <sys/syslog.h> 11848006Skato#include <machine/clock.h> 11948006Skato#include <machine/lpt.h> 12048006Skato 12148006Skato#include <i386/isa/isa_device.h> 12248006Skato#include <i386/isa/lptreg.h> 12348006Skato 12448006Skato#ifdef INET 12548006Skato#include <sys/malloc.h> 12648006Skato#include <sys/mbuf.h> 12748006Skato#include <sys/socket.h> 12848006Skato#include <sys/sockio.h> 12948006Skato 13048006Skato#include <net/if.h> 13148006Skato#include <net/if_types.h> 13248006Skato#include <net/netisr.h> 13348006Skato#include <netinet/in.h> 13448006Skato#include <netinet/in_var.h> 13548006Skato#include <net/bpf.h> 13648006Skato#endif /* INET */ 13748006Skato 13848006Skato 13948006Skato#define LPINITRDY 4 /* wait up to 4 seconds for a ready */ 14048006Skato#define LPTOUTINITIAL 10 /* initial timeout to wait for ready 1/10 s */ 14148006Skato#define LPTOUTMAX 1 /* maximal timeout 1 s */ 14248006Skato#define LPPRI (PZERO+8) 14348006Skato#define BUFSIZE 1024 14448006Skato 14548006Skato#ifdef INET 14648006Skato#ifndef LPMTU /* MTU for the lp# interfaces */ 14748006Skato#define LPMTU 1500 14848006Skato#endif 14948006Skato 15048006Skato#ifndef LPMAXSPIN1 /* DELAY factor for the lp# interfaces */ 15148006Skato#define LPMAXSPIN1 8000 /* Spinning for remote intr to happen */ 15248006Skato#endif 15348006Skato 15448006Skato#ifndef LPMAXSPIN2 /* DELAY factor for the lp# interfaces */ 15548006Skato#define LPMAXSPIN2 500 /* Spinning for remote handshake to happen */ 15648006Skato#endif 15748006Skato 15848006Skato#ifndef LPMAXERRS /* Max errors before !RUNNING */ 15948006Skato#define LPMAXERRS 100 16048006Skato#endif 16148006Skato 16248006Skato#define CLPIPHDRLEN 14 /* We send dummy ethernet addresses (two) + packet type in front of packet */ 16348006Skato#define CLPIP_SHAKE 0x80 /* This bit toggles between nibble reception */ 16448006Skato#define MLPIPHDRLEN CLPIPHDRLEN 16548006Skato 16648006Skato#define LPIPHDRLEN 2 /* We send 0x08, 0x00 in front of packet */ 16748006Skato#define LPIP_SHAKE 0x40 /* This bit toggles between nibble reception */ 16848006Skato#if !defined(MLPIPHDRLEN) || LPIPHDRLEN > MLPIPHDRLEN 16948006Skato#define MLPIPHDRLEN LPIPHDRLEN 17048006Skato#endif 17148006Skato 17248006Skato#define LPIPTBLSIZE 256 /* Size of octet translation table */ 17348006Skato 17448006Skato#endif /* INET */ 17548006Skato 17648006Skato#ifndef PC98 17748006Skato/* BIOS printer list - used by BIOS probe*/ 17848006Skato#define BIOS_LPT_PORTS 0x408 17948006Skato#define BIOS_PORTS (short *)(KERNBASE+BIOS_LPT_PORTS) 18048006Skato#define BIOS_MAX_LPT 4 18148006Skato#endif 18248006Skato 18348006Skato 18448006Skato#ifndef DEBUG 18548006Skato#define lprintf(args) 18648006Skato#else 18748006Skato#define lprintf(args) do { \ 18848006Skato if (lptflag) \ 18948006Skato printf args; \ 19048006Skato } while (0) 19148006Skatostatic int volatile lptflag = 1; 19248006Skato#endif 19348006Skato 19448006Skato#define LPTUNIT(s) ((s)&0x03) 19548006Skato#define LPTFLAGS(s) ((s)&0xfc) 19648006Skato 19748006Skatostatic struct lpt_softc { 19848006Skato int sc_port; 19948006Skato short sc_state; 20048006Skato /* default case: negative prime, negative ack, handshake strobe, 20148006Skato prime once */ 20248006Skato u_char sc_control; 20348006Skato char sc_flags; 20448006Skato#define LP_POS_INIT 0x04 /* if we are a postive init signal */ 20548006Skato#define LP_POS_ACK 0x08 /* if we are a positive going ack */ 20648006Skato#define LP_NO_PRIME 0x10 /* don't prime the printer at all */ 20748006Skato#define LP_PRIMEOPEN 0x20 /* prime on every open */ 20848006Skato#define LP_AUTOLF 0x40 /* tell printer to do an automatic lf */ 20948006Skato#define LP_BYPASS 0x80 /* bypass printer ready checks */ 21048006Skato struct buf *sc_inbuf; 21148006Skato short sc_xfercnt ; 21248006Skato char sc_primed; 21348006Skato char *sc_cp ; 21448006Skato u_char sc_irq ; /* IRQ status of port */ 21548006Skato#define LP_HAS_IRQ 0x01 /* we have an irq available */ 21648006Skato#define LP_USE_IRQ 0x02 /* we are using our irq */ 21748006Skato#define LP_ENABLE_IRQ 0x04 /* enable IRQ on open */ 21848006Skato u_char sc_backoff ; /* time to call lptout() again */ 21948006Skato 22048006Skato#ifdef INET 22148006Skato struct ifnet sc_if; 22248006Skato u_char *sc_ifbuf; 22348006Skato int sc_iferrs; 22448006Skato#endif 22548006Skato} lpt_sc[NOLPT] ; 22648006Skato 22748006Skato/* bits for state */ 22848006Skato#define OPEN (1<<0) /* device is open */ 22948006Skato#define ASLP (1<<1) /* awaiting draining of printer */ 23048006Skato#define ERROR (1<<2) /* error was received from printer */ 23148006Skato#define OBUSY (1<<3) /* printer is busy doing output */ 23248006Skato#define LPTOUT (1<<4) /* timeout while not selected */ 23348006Skato#define TOUT (1<<5) /* timeout while not selected */ 23448006Skato#define INIT (1<<6) /* waiting to initialize for open */ 23548006Skato#define INTERRUPTED (1<<7) /* write call was interrupted */ 23648006Skato 23748006Skato 23848006Skato/* status masks to interrogate printer status */ 23948006Skato#define RDY_MASK (LPS_SEL|LPS_OUT|LPS_NBSY|LPS_NERR) /* ready ? */ 24048006Skato#define LP_READY (LPS_SEL|LPS_NBSY|LPS_NERR) 24148006Skato 24248006Skato/* Printer Ready condition - from lpa.c */ 24348006Skato/* Only used in polling code */ 24448006Skato#ifdef PC98 24548006Skato#define NOT_READY(x) ((inb(x) & LPS_NBSY) != LPS_NBSY) 24648006Skato#else /* IBM-PC */ 24748006Skato#define LPS_INVERT (LPS_NBSY | LPS_NACK | LPS_SEL | LPS_NERR) 24848006Skato#define LPS_MASK (LPS_NBSY | LPS_NACK | LPS_OUT | LPS_SEL | LPS_NERR) 24948006Skato#define NOT_READY(x) ((inb(x)^LPS_INVERT)&LPS_MASK) 25048006Skato#endif 25148006Skato 25248006Skato#define MAX_SLEEP (hz*5) /* Timeout while waiting for device ready */ 25348006Skato#define MAX_SPIN 20 /* Max delay for device ready in usecs */ 25448006Skato 25548006Skatostatic timeout_t lptout; 25648006Skatostatic int lptprobe (struct isa_device *dvp); 25748006Skatostatic int lptattach (struct isa_device *isdp); 25848006Skatostatic ointhand2_t lptintr; 25958142Snyanstatic void lpt_drvinit(void *unused); 26048006Skato 26148006Skato#ifdef INET 26248006Skato 26348006Skato/* Tables for the lp# interface */ 26448006Skatostatic u_char *txmith; 26548006Skato#define txmitl (txmith+(1*LPIPTBLSIZE)) 26648006Skato#define trecvh (txmith+(2*LPIPTBLSIZE)) 26748006Skato#define trecvl (txmith+(3*LPIPTBLSIZE)) 26848006Skato 26948006Skatostatic u_char *ctxmith; 27048006Skato#define ctxmitl (ctxmith+(1*LPIPTBLSIZE)) 27148006Skato#define ctrecvh (ctxmith+(2*LPIPTBLSIZE)) 27248006Skato#define ctrecvl (ctxmith+(3*LPIPTBLSIZE)) 27348006Skato 27448006Skato/* Functions for the lp# interface */ 27548006Skatostatic void lpattach(struct lpt_softc *,int); 27648006Skato#ifndef PC98 27748006Skatostatic int lpinittables(void); 27848006Skato#endif 27948006Skatostatic int lpioctl(struct ifnet *, u_long, caddr_t); 28048006Skatostatic int lpoutput(struct ifnet *, struct mbuf *, struct sockaddr *, 28148006Skato struct rtentry *); 28248006Skatostatic void lpintr(int); 28348006Skato#endif /* INET */ 28448006Skato 28548006Skatostruct isa_driver olptdriver = { 28648006Skato lptprobe, lptattach, "olpt" 28748006Skato}; 28848006Skato 28948006Skatostatic d_open_t lptopen; 29048006Skatostatic d_close_t lptclose; 29148006Skatostatic d_write_t lptwrite; 29248006Skatostatic d_ioctl_t lptioctl; 29348006Skato 29448006Skato#define CDEV_MAJOR 16 29548006Skatostatic struct cdevsw lpt_cdevsw = { 29648006Skato /* open */ lptopen, 29748006Skato /* close */ lptclose, 29848006Skato /* read */ noread, 29948006Skato /* write */ lptwrite, 30048006Skato /* ioctl */ lptioctl, 30148006Skato /* poll */ nopoll, 30248006Skato /* mmap */ nommap, 30348006Skato /* strategy */ nostrategy, 30448006Skato /* name */ "lpt", 30548006Skato /* maj */ CDEV_MAJOR, 30648006Skato /* dump */ nodump, 30748006Skato /* psize */ nopsize, 30848006Skato /* flags */ 0, 30948006Skato /* bmaj */ -1 31048006Skato}; 31148006Skato 31248006Skato#ifndef PC98 31348006Skato/* 31448006Skato * Internal routine to lptprobe to do port tests of one byte value 31548006Skato */ 31648006Skatostatic int 31748006Skatolpt_port_test (int port, u_char data, u_char mask) 31848006Skato{ 31948006Skato int temp, timeout; 32048006Skato 32148006Skato data = data & mask; 32248006Skato outb(port, data); 32348006Skato timeout = 10000; 32448006Skato do { 32548006Skato DELAY(10); 32648006Skato temp = inb(port) & mask; 32748006Skato } 32848006Skato while (temp != data && --timeout); 32948006Skato lprintf(("Port 0x%x\tout=%x\tin=%x\ttout=%d\n", 33048006Skato port, data, temp, timeout)); 33148006Skato return (temp == data); 33248006Skato} 33348006Skato#endif /* PC98 */ 33448006Skato 33548006Skato/* 33648006Skato * New lpt port probe Geoff Rehmet - Rhodes University - 14/2/94 33748006Skato * Based partially on Rod Grimes' printer probe 33848006Skato * 33948006Skato * Logic: 34048006Skato * 1) If no port address was given, use the bios detected ports 34148006Skato * and autodetect what ports the printers are on. 34248006Skato * 2) Otherwise, probe the data port at the address given, 34348006Skato * using the method in Rod Grimes' port probe. 34448006Skato * (Much code ripped off directly from Rod's probe.) 34548006Skato * 34648006Skato * Comments from Rod's probe: 34748006Skato * Logic: 34848006Skato * 1) You should be able to write to and read back the same value 34948006Skato * to the data port. Do an alternating zeros, alternating ones, 35048006Skato * walking zero, and walking one test to check for stuck bits. 35148006Skato * 35248006Skato * 2) You should be able to write to and read back the same value 35348006Skato * to the control port lower 5 bits, the upper 3 bits are reserved 35448006Skato * per the IBM PC technical reference manauls and different boards 35548006Skato * do different things with them. Do an alternating zeros, alternating 35648006Skato * ones, walking zero, and walking one test to check for stuck bits. 35748006Skato * 35848006Skato * Some printers drag the strobe line down when the are powered off 35948006Skato * so this bit has been masked out of the control port test. 36048006Skato * 36148006Skato * XXX Some printers may not like a fast pulse on init or strobe, I 36248006Skato * don't know at this point, if that becomes a problem these bits 36348006Skato * should be turned off in the mask byte for the control port test. 36448006Skato * 36548006Skato * We are finally left with a mask of 0x14, due to some printers 36648006Skato * being adamant about holding other bits high ........ 36748006Skato * 36848006Skato * Before probing the control port, we write a 0 to the data port - 36948006Skato * If not, some printers chuck out garbage when the strobe line 37048006Skato * gets toggled. 37148006Skato * 37248006Skato * 3) Set the data and control ports to a value of 0 37348006Skato * 37448006Skato * This probe routine has been tested on Epson Lx-800, HP LJ3P, 37548006Skato * Epson FX-1170 and C.Itoh 8510RM 37648006Skato * printers. 37748006Skato * Quick exit on fail added. 37848006Skato */ 37948006Skato 38048006Skatoint 38148006Skatolptprobe(struct isa_device *dvp) 38248006Skato{ 38348006Skato#ifdef PC98 38448006Skato#define PC98_OLD_LPT 0x40 38548006Skato#define PC98_IEEE_1284_FUNCTION 0x149 38648006Skato unsigned int pc98_ieee_mode, tmp; 38748006Skato 38848006Skato if (dvp->id_iobase == PC98_OLD_LPT) { 38948006Skato tmp = inb(PC98_IEEE_1284_FUNCTION); 39048006Skato pc98_ieee_mode = tmp; 39148006Skato if ((tmp & 0x10) == 0x10) { 39248006Skato outb(PC98_IEEE_1284_FUNCTION, tmp & ~0x10); 39348006Skato tmp = inb(PC98_IEEE_1284_FUNCTION); 39448006Skato if ((tmp & 0x10) != 0x10) { 39548006Skato outb(PC98_IEEE_1284_FUNCTION, pc98_ieee_mode); 39648006Skato return 0; 39748006Skato } 39848006Skato } 39948006Skato } 40048006Skato return 8; 40148006Skato#else 40248006Skato int port; 40348006Skato static short next_bios_lpt = 0; 40448006Skato int status; 40548006Skato static u_char testbyte[18] = { 40648006Skato 0x55, /* alternating zeros */ 40748006Skato 0xaa, /* alternating ones */ 40848006Skato 0xfe, 0xfd, 0xfb, 0xf7, 40948006Skato 0xef, 0xdf, 0xbf, 0x7f, /* walking zero */ 41048006Skato 0x01, 0x02, 0x04, 0x08, 41148006Skato 0x10, 0x20, 0x40, 0x80 /* walking one */ 41248006Skato }; 41348006Skato int i; 41448006Skato 41548006Skato /* 41648006Skato * Make sure there is some way for lptopen to see that 41748006Skato * the port is not configured 41848006Skato * This 0 will remain if the port isn't attached 41948006Skato */ 42048006Skato (lpt_sc + dvp->id_unit)->sc_port = 0; 42148006Skato 42248006Skato status = IO_LPTSIZE; 42348006Skato /* If port not specified, use bios list */ 42448006Skato if(dvp->id_iobase < 0) { /* port? */ 42548006Skato if((next_bios_lpt < BIOS_MAX_LPT) && 42648006Skato (*(BIOS_PORTS+next_bios_lpt) != 0) ) { 42748006Skato dvp->id_iobase = *(BIOS_PORTS+next_bios_lpt++); 42848006Skato goto end_probe; 42948006Skato } else 43048006Skato return (0); 43148006Skato } 43248006Skato 43348006Skato /* Port was explicitly specified */ 43448006Skato /* This allows probing of ports unknown to the BIOS */ 43548006Skato port = dvp->id_iobase + lpt_data; 43648006Skato for (i = 0; i < 18; i++) { 43748006Skato if (!lpt_port_test(port, testbyte[i], 0xff)) { 43848006Skato status = 0; 43948006Skato goto end_probe; 44048006Skato } 44148006Skato } 44248006Skato 44348006Skatoend_probe: 44448006Skato /* write 0's to control and data ports */ 44548006Skato outb(dvp->id_iobase+lpt_data, 0); 44648006Skato outb(dvp->id_iobase+lpt_control, 0); 44748006Skato 44848006Skato return (status); 44948006Skato#endif 45048006Skato} 45148006Skato 45248006Skato/* XXX Todo - try and detect if interrupt is working */ 45348006Skatoint 45448006Skatolptattach(struct isa_device *isdp) 45548006Skato{ 45648006Skato struct lpt_softc *sc; 45748006Skato int unit; 45848006Skato 45948006Skato isdp->id_ointr = lptintr; 46048006Skato unit = isdp->id_unit; 46148006Skato sc = lpt_sc + unit; 46248006Skato sc->sc_port = isdp->id_iobase; 46348006Skato sc->sc_primed = 0; /* not primed yet */ 46448006Skato#ifdef PC98 46548006Skato outb(sc->sc_port+lpt_pstb_ctrl, LPC_DIS_PSTB); /* PSTB disable */ 46648006Skato outb(sc->sc_port+lpt_control, LPC_MODE8255); /* 8255 mode set */ 46748006Skato outb(sc->sc_port+lpt_control, LPC_NIRQ8); /* IRQ8 inactive */ 46848006Skato outb(sc->sc_port+lpt_control, LPC_NPSTB); /* PSTB inactive */ 46948006Skato outb(sc->sc_port+lpt_pstb_ctrl, LPC_EN_PSTB); /* PSTB enable */ 47048006Skato#else 47148006Skato outb(sc->sc_port+lpt_control, LPC_NINIT); 47248006Skato#endif 47348006Skato 47448006Skato /* check if we can use interrupt */ 47548006Skato lprintf(("oldirq %x\n", sc->sc_irq)); 47648006Skato if (isdp->id_irq) { 47748006Skato sc->sc_irq = LP_HAS_IRQ | LP_USE_IRQ | LP_ENABLE_IRQ; 47848006Skato printf("lpt%d: Interrupt-driven port\n", unit); 47948006Skato#ifdef INET 48048006Skato lpattach(sc, unit); 48148006Skato#endif 48248006Skato } else { 48348006Skato sc->sc_irq = 0; 48448006Skato lprintf(("lpt%d: Polled port\n", unit)); 48548006Skato } 48648006Skato lprintf(("irq %x\n", sc->sc_irq)); 48748006Skato 48848006Skato /* XXX what to do about the flags in the minor number? */ 48950436Sjulian make_dev(&lpt_cdevsw, unit, UID_ROOT, GID_WHEEL, 0600, "lpt%d", unit); 49050436Sjulian make_dev(&lpt_cdevsw, unit | LP_BYPASS, 49150436Sjulian UID_ROOT, GID_WHEEL, 0600, "lpctl%d", unit); 49258142Snyan 49358142Snyan#ifdef LPT_DRVINIT_AT_ATTACH 49458142Snyan lpt_drvinit(NULL); 49558142Snyan#endif 49648006Skato return (1); 49748006Skato} 49848006Skato 49948006Skato/* 50048006Skato * lptopen -- reset the printer, then wait until it's selected and not busy. 50148006Skato * If LP_BYPASS flag is selected, then we do not try to select the 50248006Skato * printer -- this is just used for passing ioctls. 50348006Skato */ 50448006Skato 50548006Skatostatic int 50648006Skatolptopen (dev_t dev, int flags, int fmt, struct proc *p) 50748006Skato{ 50848006Skato struct lpt_softc *sc; 50948006Skato int s; 51048006Skato#ifdef PC98 51148006Skato int port; 51248006Skato#else 51348006Skato int trys, port; 51448006Skato#endif 51548006Skato u_int unit = LPTUNIT(minor(dev)); 51648006Skato 51748006Skato sc = lpt_sc + unit; 51848006Skato if ((unit >= NOLPT) || (sc->sc_port == 0)) 51948006Skato return (ENXIO); 52048006Skato 52148006Skato#ifdef INET 52248006Skato if (sc->sc_if.if_flags & IFF_UP) 52348006Skato return(EBUSY); 52448006Skato#endif 52548006Skato 52648006Skato if (sc->sc_state) { 52748006Skato lprintf(("lp: still open %x\n", sc->sc_state)); 52848006Skato return(EBUSY); 52948006Skato } else 53048006Skato sc->sc_state |= INIT; 53148006Skato 53248006Skato sc->sc_flags = LPTFLAGS(minor(dev)); 53348006Skato 53448006Skato /* Check for open with BYPASS flag set. */ 53548006Skato if (sc->sc_flags & LP_BYPASS) { 53648006Skato sc->sc_state = OPEN; 53748006Skato return(0); 53848006Skato } 53948006Skato 54048006Skato s = spltty(); 54148006Skato lprintf(("lp flags 0x%x\n", sc->sc_flags)); 54248006Skato port = sc->sc_port; 54348006Skato 54448006Skato /* set IRQ status according to ENABLE_IRQ flag */ 54548006Skato if (sc->sc_irq & LP_ENABLE_IRQ) 54648006Skato sc->sc_irq |= LP_USE_IRQ; 54748006Skato else 54848006Skato sc->sc_irq &= ~LP_USE_IRQ; 54948006Skato 55048006Skato /* init printer */ 55148006Skato#ifndef PC98 55248006Skato if ((sc->sc_flags & LP_NO_PRIME) == 0) { 55348006Skato if((sc->sc_flags & LP_PRIMEOPEN) || sc->sc_primed == 0) { 55448006Skato outb(port+lpt_control, 0); 55548006Skato sc->sc_primed++; 55648006Skato DELAY(500); 55748006Skato } 55848006Skato } 55948006Skato 56048006Skato outb (port+lpt_control, LPC_SEL|LPC_NINIT); 56148006Skato 56248006Skato /* wait till ready (printer running diagnostics) */ 56348006Skato trys = 0; 56448006Skato do { 56548006Skato /* ran out of waiting for the printer */ 56648006Skato if (trys++ >= LPINITRDY*4) { 56748006Skato splx(s); 56848006Skato sc->sc_state = 0; 56948006Skato lprintf(("status %x\n", inb(port+lpt_status))); 57048006Skato return (EBUSY); 57148006Skato } 57248006Skato 57348006Skato /* wait 1/4 second, give up if we get a signal */ 57448006Skato if (tsleep ((caddr_t)sc, LPPRI|PCATCH, "lptinit", hz/4) != 57548006Skato EWOULDBLOCK) { 57648006Skato sc->sc_state = 0; 57748006Skato splx(s); 57848006Skato return (EBUSY); 57948006Skato } 58048006Skato 58148006Skato /* is printer online and ready for output */ 58248006Skato } while ((inb(port+lpt_status) & (LPS_SEL|LPS_OUT|LPS_NBSY|LPS_NERR)) != 58348006Skato (LPS_SEL|LPS_NBSY|LPS_NERR)); 58448006Skato 58548006Skato sc->sc_control = LPC_SEL|LPC_NINIT; 58648006Skato if (sc->sc_flags & LP_AUTOLF) 58748006Skato sc->sc_control |= LPC_AUTOL; 58848006Skato 58948006Skato /* enable interrupt if interrupt-driven */ 59048006Skato if (sc->sc_irq & LP_USE_IRQ) 59148006Skato sc->sc_control |= LPC_ENA; 59248006Skato 59348006Skato outb(port+lpt_control, sc->sc_control); 59448006Skato#endif 59548006Skato 59648006Skato sc->sc_state = OPEN; 59748006Skato sc->sc_inbuf = geteblk(BUFSIZE); 59848006Skato sc->sc_xfercnt = 0; 59948006Skato splx(s); 60048006Skato 60148006Skato /* only use timeout if using interrupt */ 60248006Skato lprintf(("irq %x\n", sc->sc_irq)); 60348006Skato if (sc->sc_irq & LP_USE_IRQ) { 60448006Skato sc->sc_state |= TOUT; 60548006Skato timeout (lptout, (caddr_t)sc, 60648006Skato (sc->sc_backoff = hz/LPTOUTINITIAL)); 60748006Skato } 60848006Skato 60948006Skato lprintf(("opened.\n")); 61048006Skato return(0); 61148006Skato} 61248006Skato 61348006Skatostatic void 61448006Skatolptout (void *arg) 61548006Skato{ 61648006Skato struct lpt_softc *sc = arg; 61748006Skato int pl; 61848006Skato 61948006Skato lprintf(("T %x ", inb(sc->sc_port+lpt_status))); 62048006Skato if (sc->sc_state & OPEN) { 62148006Skato sc->sc_backoff++; 62248006Skato if (sc->sc_backoff > hz/LPTOUTMAX) 62348006Skato sc->sc_backoff = sc->sc_backoff > hz/LPTOUTMAX; 62448006Skato timeout (lptout, (caddr_t)sc, sc->sc_backoff); 62548006Skato } else 62648006Skato sc->sc_state &= ~TOUT; 62748006Skato 62848006Skato if (sc->sc_state & ERROR) 62948006Skato sc->sc_state &= ~ERROR; 63048006Skato 63148006Skato /* 63248006Skato * Avoid possible hangs do to missed interrupts 63348006Skato */ 63448006Skato if (sc->sc_xfercnt) { 63548006Skato pl = spltty(); 63648006Skato lptintr(sc - lpt_sc); 63748006Skato splx(pl); 63848006Skato } else { 63948006Skato sc->sc_state &= ~OBUSY; 64048006Skato wakeup((caddr_t)sc); 64148006Skato } 64248006Skato} 64348006Skato 64448006Skato/* 64548006Skato * lptclose -- close the device, free the local line buffer. 64648006Skato * 64748006Skato * Check for interrupted write call added. 64848006Skato */ 64948006Skato 65048006Skatostatic int 65148006Skatolptclose(dev_t dev, int flags, int fmt, struct proc *p) 65248006Skato{ 65348006Skato struct lpt_softc *sc = lpt_sc + LPTUNIT(minor(dev)); 65448006Skato#ifndef PC98 65548006Skato int port = sc->sc_port; 65648006Skato#endif 65748006Skato 65848006Skato if(sc->sc_flags & LP_BYPASS) 65948006Skato goto end_close; 66048006Skato 66148006Skato sc->sc_state &= ~OPEN; 66248006Skato 66348006Skato#ifndef PC98 66448006Skato /* if the last write was interrupted, don't complete it */ 66548006Skato if((!(sc->sc_state & INTERRUPTED)) && (sc->sc_irq & LP_USE_IRQ)) 66648006Skato while ((inb(port+lpt_status) & (LPS_SEL|LPS_OUT|LPS_NBSY|LPS_NERR)) != 66748006Skato (LPS_SEL|LPS_NBSY|LPS_NERR) || sc->sc_xfercnt) 66848006Skato /* wait 1/4 second, give up if we get a signal */ 66948006Skato if (tsleep ((caddr_t)sc, LPPRI|PCATCH, 67048006Skato "lpclose", hz) != EWOULDBLOCK) 67148006Skato break; 67248006Skato 67348006Skato outb(sc->sc_port+lpt_control, LPC_NINIT); 67448006Skato#endif 67548006Skato brelse(sc->sc_inbuf); 67648006Skato 67748006Skatoend_close: 67848006Skato sc->sc_state = 0; 67948006Skato sc->sc_xfercnt = 0; 68048006Skato lprintf(("closed.\n")); 68148006Skato return(0); 68248006Skato} 68348006Skato 68448006Skato/* 68548006Skato * pushbytes() 68648006Skato * Workhorse for actually spinning and writing bytes to printer 68748006Skato * Derived from lpa.c 68848006Skato * Originally by ? 68948006Skato * 69048006Skato * This code is only used when we are polling the port 69148006Skato */ 69248006Skatostatic int 69348006Skatopushbytes(struct lpt_softc * sc) 69448006Skato{ 69548006Skato int spin, err, tic; 69648006Skato char ch; 69748006Skato int port = sc->sc_port; 69848006Skato 69948006Skato lprintf(("p")); 70048006Skato /* loop for every character .. */ 70148006Skato while (sc->sc_xfercnt > 0) { 70248006Skato /* printer data */ 70348006Skato ch = *(sc->sc_cp); 70448006Skato sc->sc_cp++; 70548006Skato sc->sc_xfercnt--; 70648006Skato 70748006Skato /* 70848006Skato * Wait for printer ready. 70948006Skato * Loop 20 usecs testing BUSY bit, then sleep 71048006Skato * for exponentially increasing timeout. (vak) 71148006Skato */ 71248006Skato for (spin=0; NOT_READY(port+lpt_status) && spin<MAX_SPIN; ++spin) 71348006Skato DELAY(1); /* XXX delay is NOT this accurate! */ 71448006Skato if (spin >= MAX_SPIN) { 71548006Skato tic = 0; 71648006Skato while (NOT_READY(port+lpt_status)) { 71748006Skato /* 71848006Skato * Now sleep, every cycle a 71948006Skato * little longer .. 72048006Skato */ 72148006Skato tic = tic + tic + 1; 72248006Skato /* 72348006Skato * But no more than 10 seconds. (vak) 72448006Skato */ 72548006Skato if (tic > MAX_SLEEP) 72648006Skato tic = MAX_SLEEP; 72748006Skato err = tsleep((caddr_t)sc, LPPRI, 72848006Skato "lptpoll", tic); 72948006Skato if (err != EWOULDBLOCK) { 73048006Skato return (err); 73148006Skato } 73248006Skato } 73348006Skato } 73448006Skato 73548006Skato /* output data */ 73648006Skato outb(port+lpt_data, ch); 73748006Skato#ifdef PC98 73848006Skato DELAY(1); 73948006Skato outb(port+lpt_control, LPC_PSTB); 74048006Skato DELAY(1); 74148006Skato outb(port+lpt_control, LPC_NPSTB); 74248006Skato#else 74348006Skato /* strobe */ 74448006Skato outb(port+lpt_control, sc->sc_control|LPC_STB); 74548006Skato outb(port+lpt_control, sc->sc_control); 74648006Skato#endif 74748006Skato 74848006Skato } 74948006Skato return(0); 75048006Skato} 75148006Skato 75248006Skato/* 75348006Skato * lptwrite --copy a line from user space to a local buffer, then call 75448006Skato * putc to get the chars moved to the output queue. 75548006Skato * 75648006Skato * Flagging of interrupted write added. 75748006Skato */ 75848006Skato 75948006Skatostatic int 76048006Skatolptwrite(dev_t dev, struct uio * uio, int ioflag) 76148006Skato{ 76248006Skato register unsigned n; 76348006Skato int pl, err; 76448006Skato struct lpt_softc *sc = lpt_sc + LPTUNIT(minor(dev)); 76548006Skato 76648006Skato if(sc->sc_flags & LP_BYPASS) { 76748006Skato /* we can't do writes in bypass mode */ 76848006Skato return(EPERM); 76948006Skato } 77048006Skato 77148006Skato sc->sc_state &= ~INTERRUPTED; 77248006Skato while ((n = min(BUFSIZE, uio->uio_resid)) != 0) { 77348006Skato sc->sc_cp = sc->sc_inbuf->b_data ; 77448006Skato uiomove(sc->sc_cp, n, uio); 77548006Skato sc->sc_xfercnt = n ; 77648006Skato while ((sc->sc_xfercnt > 0)&&(sc->sc_irq & LP_USE_IRQ)) { 77748006Skato lprintf(("i")); 77848006Skato /* if the printer is ready for a char, */ 77948006Skato /* give it one */ 78048006Skato if ((sc->sc_state & OBUSY) == 0){ 78148006Skato lprintf(("\nC %d. ", sc->sc_xfercnt)); 78248006Skato pl = spltty(); 78348006Skato lptintr(sc - lpt_sc); 78448006Skato (void) splx(pl); 78548006Skato } 78648006Skato lprintf(("W ")); 78748006Skato if (sc->sc_state & OBUSY) 78848006Skato if ((err = tsleep ((caddr_t)sc, 78948006Skato LPPRI|PCATCH, "lpwrite", 0))) { 79048006Skato sc->sc_state |= INTERRUPTED; 79148006Skato return(err); 79248006Skato } 79348006Skato } 79448006Skato /* check to see if we must do a polled write */ 79548006Skato if(!(sc->sc_irq & LP_USE_IRQ) && (sc->sc_xfercnt)) { 79648006Skato lprintf(("p")); 79748006Skato if((err = pushbytes(sc))) 79848006Skato return(err); 79948006Skato } 80048006Skato } 80148006Skato return(0); 80248006Skato} 80348006Skato 80448006Skato/* 80548006Skato * lptintr -- handle printer interrupts which occur when the printer is 80648006Skato * ready to accept another char. 80748006Skato * 80848006Skato * do checking for interrupted write call. 80948006Skato */ 81048006Skato 81148006Skatostatic void 81248006Skatolptintr(int unit) 81348006Skato{ 81455391Snyan#if defined(INET) || !defined(PC98) 81548006Skato struct lpt_softc *sc = lpt_sc + unit; 81655391Snyan#endif 81748006Skato#ifndef PC98 81848006Skato int port = sc->sc_port, sts; 81948006Skato int i; 82048006Skato#endif 82148006Skato 82248006Skato#ifdef INET 82348006Skato if(sc->sc_if.if_flags & IFF_UP) { 82448006Skato lpintr(unit); 82548006Skato return; 82648006Skato } 82748006Skato#endif /* INET */ 82848006Skato 82948006Skato#ifndef PC98 83048006Skato /* 83148006Skato * Is printer online and ready for output? 83248006Skato * 83348006Skato * Avoid falling back to lptout() too quickly. First spin-loop 83448006Skato * to see if the printer will become ready ``really soon now''. 83548006Skato */ 83648006Skato for (i = 0; 83748006Skato i < 100 && 83848006Skato ((sts=inb(port+lpt_status)) & RDY_MASK) != LP_READY; 83948006Skato i++) ; 84048006Skato if ((sts & RDY_MASK) == LP_READY) { 84148006Skato sc->sc_state = (sc->sc_state | OBUSY) & ~ERROR; 84248006Skato sc->sc_backoff = hz/LPTOUTINITIAL; 84348006Skato 84448006Skato if (sc->sc_xfercnt) { 84548006Skato /* send char */ 84648006Skato /*lprintf(("%x ", *sc->sc_cp)); */ 84748006Skato outb(port+lpt_data, *sc->sc_cp++) ; 84848006Skato outb(port+lpt_control, sc->sc_control|LPC_STB); 84948006Skato /* DELAY(X) */ 85048006Skato outb(port+lpt_control, sc->sc_control); 85148006Skato 85248006Skato /* any more data for printer */ 85348006Skato if(--(sc->sc_xfercnt) > 0) return; 85448006Skato } 85548006Skato 85648006Skato /* 85748006Skato * No more data waiting for printer. 85848006Skato * Wakeup is not done if write call was interrupted. 85948006Skato */ 86048006Skato sc->sc_state &= ~OBUSY; 86148006Skato if(!(sc->sc_state & INTERRUPTED)) 86248006Skato wakeup((caddr_t)sc); 86348006Skato lprintf(("w ")); 86448006Skato return; 86548006Skato } else { /* check for error */ 86648006Skato if(((sts & (LPS_NERR | LPS_OUT) ) != LPS_NERR) && 86748006Skato (sc->sc_state & OPEN)) 86848006Skato sc->sc_state |= ERROR; 86948006Skato /* lptout() will jump in and try to restart. */ 87048006Skato } 87148006Skato#endif 87248006Skato lprintf(("sts %x ", sts)); 87348006Skato} 87448006Skato 87548006Skatostatic int 87648006Skatolptioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct proc *p) 87748006Skato{ 87848006Skato int error = 0; 87948006Skato struct lpt_softc *sc; 88048006Skato u_int unit = LPTUNIT(minor(dev)); 88148006Skato u_char old_sc_irq; /* old printer IRQ status */ 88248006Skato 88348006Skato sc = lpt_sc + unit; 88448006Skato 88548006Skato switch (cmd) { 88648006Skato case LPT_IRQ : 88748006Skato if(sc->sc_irq & LP_HAS_IRQ) { 88848006Skato /* 88948006Skato * NOTE: 89048006Skato * If the IRQ status is changed, 89148006Skato * this will only be visible on the 89248006Skato * next open. 89348006Skato * 89448006Skato * If interrupt status changes, 89548006Skato * this gets syslog'd. 89648006Skato */ 89748006Skato old_sc_irq = sc->sc_irq; 89848006Skato if(*(int*)data == 0) 89948006Skato sc->sc_irq &= (~LP_ENABLE_IRQ); 90048006Skato else 90148006Skato sc->sc_irq |= LP_ENABLE_IRQ; 90248006Skato if (old_sc_irq != sc->sc_irq ) 90348006Skato log(LOG_NOTICE, "lpt%c switched to %s mode\n", 90448006Skato (char)unit+'0', 90548006Skato (sc->sc_irq & LP_ENABLE_IRQ)? 90648006Skato "interrupt-driven":"polled"); 90748006Skato } else /* polled port */ 90848006Skato error = EOPNOTSUPP; 90948006Skato break; 91048006Skato default: 91148006Skato error = ENODEV; 91248006Skato } 91348006Skato 91448006Skato return(error); 91548006Skato} 91648006Skato 91748006Skato#ifdef INET 91848006Skato 91948006Skatostatic void 92048006Skatolpattach (struct lpt_softc *sc, int unit) 92148006Skato{ 92248006Skato struct ifnet *ifp = &sc->sc_if; 92348006Skato 92448006Skato ifp->if_softc = sc; 92548006Skato ifp->if_name = "lp"; 92648006Skato ifp->if_unit = unit; 92748006Skato ifp->if_mtu = LPMTU; 92848006Skato ifp->if_flags = IFF_SIMPLEX | IFF_POINTOPOINT | IFF_MULTICAST; 92948006Skato ifp->if_ioctl = lpioctl; 93048006Skato ifp->if_output = lpoutput; 93148006Skato ifp->if_type = IFT_PARA; 93248006Skato ifp->if_hdrlen = 0; 93348006Skato ifp->if_addrlen = 0; 93448006Skato ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; 93548006Skato if_attach(ifp); 93648006Skato printf("lp%d: TCP/IP capable interface\n", unit); 93748006Skato 93848006Skato bpfattach(ifp, DLT_NULL, LPIPHDRLEN); 93948006Skato} 94048006Skato 94148006Skato#ifndef PC98 94248006Skato/* 94348006Skato * Build the translation tables for the LPIP (BSD unix) protocol. 94448006Skato * We don't want to calculate these nasties in our tight loop, so we 94548006Skato * precalculate them when we initialize. 94648006Skato */ 94748006Skatostatic int 94848006Skatolpinittables (void) 94948006Skato{ 95048006Skato int i; 95148006Skato 95248006Skato if (!txmith) 95348006Skato txmith = malloc(4*LPIPTBLSIZE, M_DEVBUF, M_NOWAIT); 95448006Skato 95548006Skato if (!txmith) 95648006Skato return 1; 95748006Skato 95848006Skato if (!ctxmith) 95948006Skato ctxmith = malloc(4*LPIPTBLSIZE, M_DEVBUF, M_NOWAIT); 96048006Skato 96148006Skato if (!ctxmith) 96248006Skato return 1; 96348006Skato 96448006Skato for (i=0; i < LPIPTBLSIZE; i++) { 96548006Skato ctxmith[i] = (i & 0xF0) >> 4; 96648006Skato ctxmitl[i] = 0x10 | (i & 0x0F); 96748006Skato ctrecvh[i] = (i & 0x78) << 1; 96848006Skato ctrecvl[i] = (i & 0x78) >> 3; 96948006Skato } 97048006Skato 97148006Skato for (i=0; i < LPIPTBLSIZE; i++) { 97248006Skato txmith[i] = ((i & 0x80) >> 3) | ((i & 0x70) >> 4) | 0x08; 97348006Skato txmitl[i] = ((i & 0x08) << 1) | (i & 0x07); 97448006Skato trecvh[i] = ((~i) & 0x80) | ((i & 0x38) << 1); 97548006Skato trecvl[i] = (((~i) & 0x80) >> 4) | ((i & 0x38) >> 3); 97648006Skato } 97748006Skato 97848006Skato return 0; 97948006Skato} 98048006Skato#endif /* PC98 */ 98148006Skato 98248006Skato/* 98348006Skato * Process an ioctl request. 98448006Skato */ 98548006Skato 98648006Skatostatic int 98748006Skatolpioctl (struct ifnet *ifp, u_long cmd, caddr_t data) 98848006Skato{ 98948006Skato struct lpt_softc *sc = lpt_sc + ifp->if_unit; 99048006Skato struct ifaddr *ifa = (struct ifaddr *)data; 99148006Skato struct ifreq *ifr = (struct ifreq *)data; 99248006Skato u_char *ptr; 99348006Skato 99448006Skato switch (cmd) { 99548006Skato 99648006Skato case SIOCSIFDSTADDR: 99748006Skato case SIOCAIFADDR: 99848006Skato case SIOCSIFADDR: 99948006Skato if (ifa->ifa_addr->sa_family != AF_INET) 100048006Skato return EAFNOSUPPORT; 100148006Skato ifp->if_flags |= IFF_UP; 100248006Skato /* FALLTHROUGH */ 100348006Skato case SIOCSIFFLAGS: 100448006Skato if ((!(ifp->if_flags & IFF_UP)) && (ifp->if_flags & IFF_RUNNING)) { 100548006Skato outb(sc->sc_port + lpt_control, 0x00); 100648006Skato ifp->if_flags &= ~IFF_RUNNING; 100748006Skato break; 100848006Skato } 100948006Skato#ifdef PC98 101048006Skato /* XXX */ 101148006Skato return ENOBUFS; 101248006Skato#else 101348006Skato if (((ifp->if_flags & IFF_UP)) && (!(ifp->if_flags & IFF_RUNNING))) { 101448006Skato if (lpinittables()) 101548006Skato return ENOBUFS; 101648006Skato sc->sc_ifbuf = malloc(sc->sc_if.if_mtu + MLPIPHDRLEN, 101748006Skato M_DEVBUF, M_WAITOK); 101848006Skato if (!sc->sc_ifbuf) 101948006Skato return ENOBUFS; 102048006Skato 102148006Skato outb(sc->sc_port + lpt_control, LPC_ENA); 102248006Skato ifp->if_flags |= IFF_RUNNING; 102348006Skato } 102448006Skato break; 102548006Skato#endif 102648006Skato case SIOCSIFMTU: 102748006Skato ptr = sc->sc_ifbuf; 102848006Skato sc->sc_ifbuf = malloc(ifr->ifr_mtu+MLPIPHDRLEN, M_DEVBUF, M_NOWAIT); 102948006Skato if (!sc->sc_ifbuf) { 103048006Skato sc->sc_ifbuf = ptr; 103148006Skato return ENOBUFS; 103248006Skato } 103348006Skato if (ptr) 103448006Skato free(ptr,M_DEVBUF); 103548006Skato sc->sc_if.if_mtu = ifr->ifr_mtu; 103648006Skato break; 103748006Skato 103848006Skato case SIOCGIFMTU: 103948006Skato ifr->ifr_mtu = sc->sc_if.if_mtu; 104048006Skato break; 104148006Skato 104248006Skato case SIOCADDMULTI: 104348006Skato case SIOCDELMULTI: 104448006Skato if (ifr == 0) { 104548006Skato return EAFNOSUPPORT; /* XXX */ 104648006Skato } 104748006Skato switch (ifr->ifr_addr.sa_family) { 104848006Skato 104948006Skato#ifdef INET 105048006Skato case AF_INET: 105148006Skato break; 105248006Skato#endif 105348006Skato 105448006Skato default: 105548006Skato return EAFNOSUPPORT; 105648006Skato } 105748006Skato break; 105848006Skato 105948006Skato default: 106048006Skato lprintf(("LP:ioctl(0x%lx)\n", cmd)); 106148006Skato return EINVAL; 106248006Skato } 106348006Skato return 0; 106448006Skato} 106548006Skato 106648006Skatostatic __inline int 106748006Skatoclpoutbyte (u_char byte, int spin, int data_port, int status_port) 106848006Skato{ 106948006Skato outb(data_port, ctxmitl[byte]); 107048006Skato while (inb(status_port) & CLPIP_SHAKE) 107148006Skato if (--spin == 0) { 107248006Skato return 1; 107348006Skato } 107448006Skato outb(data_port, ctxmith[byte]); 107548006Skato while (!(inb(status_port) & CLPIP_SHAKE)) 107648006Skato if (--spin == 0) { 107748006Skato return 1; 107848006Skato } 107948006Skato return 0; 108048006Skato} 108148006Skato 108248006Skatostatic __inline int 108348006Skatoclpinbyte (int spin, int data_port, int status_port) 108448006Skato{ 108548006Skato int c, cl; 108648006Skato 108748006Skato while((inb(status_port) & CLPIP_SHAKE)) 108848006Skato if(!--spin) { 108948006Skato return -1; 109048006Skato } 109148006Skato cl = inb(status_port); 109248006Skato outb(data_port, 0x10); 109348006Skato 109448006Skato while(!(inb(status_port) & CLPIP_SHAKE)) 109548006Skato if(!--spin) { 109648006Skato return -1; 109748006Skato } 109848006Skato c = inb(status_port); 109948006Skato outb(data_port, 0x00); 110048006Skato 110148006Skato return (ctrecvl[cl] | ctrecvh[c]); 110248006Skato} 110348006Skato 110448006Skatostatic void 110548006Skatolpintr (int unit) 110648006Skato{ 110748006Skato struct lpt_softc *sc = lpt_sc + unit; 110848006Skato register int lpt_data_port = sc->sc_port + lpt_data; 110948006Skato register int lpt_stat_port = sc->sc_port + lpt_status; 111048006Skato int lpt_ctrl_port = sc->sc_port + lpt_control; 111148006Skato int len, s, j; 111248006Skato u_char *bp; 111348006Skato u_char c, cl; 111448006Skato struct mbuf *top; 111548006Skato 111648006Skato s = splhigh(); 111748006Skato 111848006Skato if (sc->sc_if.if_flags & IFF_LINK0) { 111948006Skato 112048006Skato /* Ack. the request */ 112148006Skato outb(lpt_data_port, 0x01); 112248006Skato 112348006Skato /* Get the packet length */ 112448006Skato j = clpinbyte(LPMAXSPIN2, lpt_data_port, lpt_stat_port); 112548006Skato if (j == -1) 112648006Skato goto err; 112748006Skato len = j; 112848006Skato j = clpinbyte(LPMAXSPIN2, lpt_data_port, lpt_stat_port); 112948006Skato if (j == -1) 113048006Skato goto err; 113148006Skato len = len + (j << 8); 113248006Skato if (len > sc->sc_if.if_mtu + MLPIPHDRLEN) 113348006Skato goto err; 113448006Skato 113548006Skato bp = sc->sc_ifbuf; 113648006Skato 113748006Skato while (len--) { 113848006Skato j = clpinbyte(LPMAXSPIN2, lpt_data_port, lpt_stat_port); 113948006Skato if (j == -1) { 114048006Skato goto err; 114148006Skato } 114248006Skato *bp++ = j; 114348006Skato } 114448006Skato /* Get and ignore checksum */ 114548006Skato j = clpinbyte(LPMAXSPIN2, lpt_data_port, lpt_stat_port); 114648006Skato if (j == -1) { 114748006Skato goto err; 114848006Skato } 114948006Skato 115048006Skato len = bp - sc->sc_ifbuf; 115148006Skato if (len <= CLPIPHDRLEN) 115248006Skato goto err; 115348006Skato 115448006Skato sc->sc_iferrs = 0; 115548006Skato 115648006Skato if (IF_QFULL(&ipintrq)) { 115748006Skato lprintf(("DROP")); 115848006Skato IF_DROP(&ipintrq); 115948006Skato goto done; 116048006Skato } 116148006Skato len -= CLPIPHDRLEN; 116248006Skato sc->sc_if.if_ipackets++; 116348006Skato sc->sc_if.if_ibytes += len; 116448006Skato top = m_devget(sc->sc_ifbuf + CLPIPHDRLEN, len, 0, &sc->sc_if, 0); 116548006Skato if (top) { 116648006Skato IF_ENQUEUE(&ipintrq, top); 116748006Skato schednetisr(NETISR_IP); 116848006Skato } 116948006Skato goto done; 117048006Skato } 117148006Skato while ((inb(lpt_stat_port) & LPIP_SHAKE)) { 117248006Skato len = sc->sc_if.if_mtu + LPIPHDRLEN; 117348006Skato bp = sc->sc_ifbuf; 117448006Skato while (len--) { 117548006Skato 117648006Skato cl = inb(lpt_stat_port); 117748006Skato outb(lpt_data_port, 8); 117848006Skato 117948006Skato j = LPMAXSPIN2; 118048006Skato while((inb(lpt_stat_port) & LPIP_SHAKE)) 118148006Skato if(!--j) goto err; 118248006Skato 118348006Skato c = inb(lpt_stat_port); 118448006Skato outb(lpt_data_port, 0); 118548006Skato 118648006Skato *bp++= trecvh[cl] | trecvl[c]; 118748006Skato 118848006Skato j = LPMAXSPIN2; 118948006Skato while (!((cl=inb(lpt_stat_port)) & LPIP_SHAKE)) { 119048006Skato if (cl != c && 119148006Skato (((cl = inb(lpt_stat_port)) ^ 0xb8) & 0xf8) == 119248006Skato (c & 0xf8)) 119348006Skato goto end; 119448006Skato if (!--j) goto err; 119548006Skato } 119648006Skato } 119748006Skato 119848006Skato end: 119948006Skato len = bp - sc->sc_ifbuf; 120048006Skato if (len <= LPIPHDRLEN) 120148006Skato goto err; 120248006Skato 120348006Skato sc->sc_iferrs = 0; 120448006Skato 120548006Skato if (IF_QFULL(&ipintrq)) { 120648006Skato lprintf(("DROP")); 120748006Skato IF_DROP(&ipintrq); 120848006Skato goto done; 120948006Skato } 121048006Skato if (sc->sc_if.if_bpf) { 121148006Skato bpf_tap(&sc->sc_if, sc->sc_ifbuf, len); 121248006Skato } 121348006Skato len -= LPIPHDRLEN; 121448006Skato sc->sc_if.if_ipackets++; 121548006Skato sc->sc_if.if_ibytes += len; 121648006Skato top = m_devget(sc->sc_ifbuf + LPIPHDRLEN, len, 0, &sc->sc_if, 0); 121748006Skato if (top) { 121848006Skato IF_ENQUEUE(&ipintrq, top); 121948006Skato schednetisr(NETISR_IP); 122048006Skato } 122148006Skato } 122248006Skato goto done; 122348006Skato 122448006Skato err: 122548006Skato outb(lpt_data_port, 0); 122648006Skato lprintf(("R")); 122748006Skato sc->sc_if.if_ierrors++; 122848006Skato sc->sc_iferrs++; 122948006Skato 123048006Skato /* 123148006Skato * We are not able to send receive anything for now, 123248006Skato * so stop wasting our time 123348006Skato */ 123448006Skato if (sc->sc_iferrs > LPMAXERRS) { 123548006Skato printf("lp%d: Too many errors, Going off-line.\n", unit); 123648006Skato outb(lpt_ctrl_port, 0x00); 123748006Skato sc->sc_if.if_flags &= ~IFF_RUNNING; 123848006Skato sc->sc_iferrs=0; 123948006Skato } 124048006Skato 124148006Skato done: 124248006Skato splx(s); 124348006Skato return; 124448006Skato} 124548006Skato 124648006Skatostatic __inline int 124748006Skatolpoutbyte (u_char byte, int spin, int data_port, int status_port) 124848006Skato{ 124948006Skato outb(data_port, txmith[byte]); 125048006Skato while (!(inb(status_port) & LPIP_SHAKE)) 125148006Skato if (--spin == 0) 125248006Skato return 1; 125348006Skato outb(data_port, txmitl[byte]); 125448006Skato while (inb(status_port) & LPIP_SHAKE) 125548006Skato if (--spin == 0) 125648006Skato return 1; 125748006Skato return 0; 125848006Skato} 125948006Skato 126048006Skatostatic int 126148006Skatolpoutput (struct ifnet *ifp, struct mbuf *m, 126248006Skato struct sockaddr *dst, struct rtentry *rt) 126348006Skato{ 126448006Skato register int lpt_data_port = lpt_sc[ifp->if_unit].sc_port + lpt_data; 126548006Skato register int lpt_stat_port = lpt_sc[ifp->if_unit].sc_port + lpt_status; 126648006Skato#ifndef PC98 126748006Skato int lpt_ctrl_port = lpt_sc[ifp->if_unit].sc_port + lpt_control; 126848006Skato#endif 126948006Skato 127048006Skato int s, err; 127148006Skato struct mbuf *mm; 127248006Skato u_char *cp = "\0\0"; 127348006Skato u_char chksum = 0; 127448006Skato int count = 0; 127548006Skato int i; 127648006Skato int spin; 127748006Skato 127848006Skato /* We need a sensible value if we abort */ 127948006Skato cp++; 128048006Skato ifp->if_flags |= IFF_RUNNING; 128148006Skato 128248006Skato err = 1; /* assume we're aborting because of an error */ 128348006Skato 128448006Skato s = splhigh(); 128548006Skato 128648006Skato#ifndef PC98 128748006Skato /* Suspend (on laptops) or receive-errors might have taken us offline */ 128848006Skato outb(lpt_ctrl_port, LPC_ENA); 128948006Skato#endif 129048006Skato 129148006Skato if (ifp->if_flags & IFF_LINK0) { 129248006Skato 129348006Skato if (!(inb(lpt_stat_port) & CLPIP_SHAKE)) { 129448006Skato lprintf(("&")); 129548006Skato lptintr(ifp->if_unit); 129648006Skato } 129748006Skato 129848006Skato /* Alert other end to pending packet */ 129948006Skato spin = LPMAXSPIN1; 130048006Skato outb(lpt_data_port, 0x08); 130148006Skato while ((inb(lpt_stat_port) & 0x08) == 0) 130248006Skato if (--spin == 0) { 130348006Skato goto nend; 130448006Skato } 130548006Skato 130648006Skato /* Calculate length of packet, then send that */ 130748006Skato 130848006Skato count += 14; /* Ethernet header len */ 130948006Skato 131048006Skato mm = m; 131148006Skato for (mm = m; mm; mm = mm->m_next) { 131248006Skato count += mm->m_len; 131348006Skato } 131448006Skato if (clpoutbyte(count & 0xFF, LPMAXSPIN1, lpt_data_port, lpt_stat_port)) 131548006Skato goto nend; 131648006Skato if (clpoutbyte((count >> 8) & 0xFF, LPMAXSPIN1, lpt_data_port, lpt_stat_port)) 131748006Skato goto nend; 131848006Skato 131948006Skato /* Send dummy ethernet header */ 132048006Skato for (i = 0; i < 12; i++) { 132148006Skato if (clpoutbyte(i, LPMAXSPIN1, lpt_data_port, lpt_stat_port)) 132248006Skato goto nend; 132348006Skato chksum += i; 132448006Skato } 132548006Skato 132648006Skato if (clpoutbyte(0x08, LPMAXSPIN1, lpt_data_port, lpt_stat_port)) 132748006Skato goto nend; 132848006Skato if (clpoutbyte(0x00, LPMAXSPIN1, lpt_data_port, lpt_stat_port)) 132948006Skato goto nend; 133048006Skato chksum += 0x08 + 0x00; /* Add into checksum */ 133148006Skato 133248006Skato mm = m; 133348006Skato do { 133448006Skato cp = mtod(mm, u_char *); 133548006Skato while (mm->m_len--) { 133648006Skato chksum += *cp; 133748006Skato if (clpoutbyte(*cp++, LPMAXSPIN2, lpt_data_port, lpt_stat_port)) 133848006Skato goto nend; 133948006Skato } 134048006Skato } while ((mm = mm->m_next)); 134148006Skato 134248006Skato /* Send checksum */ 134348006Skato if (clpoutbyte(chksum, LPMAXSPIN2, lpt_data_port, lpt_stat_port)) 134448006Skato goto nend; 134548006Skato 134648006Skato /* Go quiescent */ 134748006Skato outb(lpt_data_port, 0); 134848006Skato 134948006Skato err = 0; /* No errors */ 135048006Skato 135148006Skato nend: 135248006Skato if (err) { /* if we didn't timeout... */ 135348006Skato ifp->if_oerrors++; 135448006Skato lprintf(("X")); 135548006Skato } else { 135648006Skato ifp->if_opackets++; 135748006Skato ifp->if_obytes += m->m_pkthdr.len; 135848006Skato } 135948006Skato 136048006Skato m_freem(m); 136148006Skato 136248006Skato if (!(inb(lpt_stat_port) & CLPIP_SHAKE)) { 136348006Skato lprintf(("^")); 136448006Skato lptintr(ifp->if_unit); 136548006Skato } 136648006Skato (void) splx(s); 136748006Skato return 0; 136848006Skato } 136948006Skato 137048006Skato if (inb(lpt_stat_port) & LPIP_SHAKE) { 137148006Skato lprintf(("&")); 137248006Skato lptintr(ifp->if_unit); 137348006Skato } 137448006Skato 137548006Skato if (lpoutbyte(0x08, LPMAXSPIN1, lpt_data_port, lpt_stat_port)) 137648006Skato goto end; 137748006Skato if (lpoutbyte(0x00, LPMAXSPIN2, lpt_data_port, lpt_stat_port)) 137848006Skato goto end; 137948006Skato 138048006Skato mm = m; 138148006Skato do { 138248006Skato cp = mtod(mm,u_char *); 138348006Skato while (mm->m_len--) 138448006Skato if (lpoutbyte(*cp++, LPMAXSPIN2, lpt_data_port, lpt_stat_port)) 138548006Skato goto end; 138648006Skato } while ((mm = mm->m_next)); 138748006Skato 138848006Skato err = 0; /* no errors were encountered */ 138948006Skato 139048006Skato end: 139148006Skato --cp; 139248006Skato outb(lpt_data_port, txmitl[*cp] ^ 0x17); 139348006Skato 139448006Skato if (err) { /* if we didn't timeout... */ 139548006Skato ifp->if_oerrors++; 139648006Skato lprintf(("X")); 139748006Skato } else { 139848006Skato ifp->if_opackets++; 139948006Skato ifp->if_obytes += m->m_pkthdr.len; 140048006Skato if (ifp->if_bpf) { 140148006Skato /* 140248006Skato * We need to prepend the packet type as 140348006Skato * a two byte field. Cons up a dummy header 140448006Skato * to pacify bpf. This is safe because bpf 140548006Skato * will only read from the mbuf (i.e., it won't 140648006Skato * try to free it or keep a pointer to it). 140748006Skato */ 140848006Skato struct mbuf m0; 140948006Skato u_short hdr = 0x800; 141048006Skato 141148006Skato m0.m_next = m; 141248006Skato m0.m_len = 2; 141348006Skato m0.m_data = (char *)&hdr; 141448006Skato 141548006Skato bpf_mtap(ifp, &m0); 141648006Skato } 141748006Skato } 141848006Skato 141948006Skato m_freem(m); 142048006Skato 142148006Skato if (inb(lpt_stat_port) & LPIP_SHAKE) { 142248006Skato lprintf(("^")); 142348006Skato lptintr(ifp->if_unit); 142448006Skato } 142548006Skato 142648006Skato (void) splx(s); 142748006Skato return 0; 142848006Skato} 142948006Skato 143048006Skato#endif /* INET */ 143148006Skato 143248006Skatostatic int lpt_devsw_installed; 143348006Skato 143448006Skatostatic void lpt_drvinit(void *unused) 143548006Skato{ 143648006Skato 143748006Skato if( ! lpt_devsw_installed ) { 143848006Skato cdevsw_add(&lpt_cdevsw); 143948006Skato lpt_devsw_installed = 1; 144048006Skato } 144148006Skato} 144258142Snyan#ifndef LPT_DRVINIT_AT_ATTACH 144348006SkatoSYSINIT(lptdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,lpt_drvinit,NULL) 144458142Snyan#endif 1445