ppi.c revision 55977
128219Smsmith/*- 255939Snsouch * Copyright (c) 1997, 1998, 1999 Nicolas Souchu, Michael Smith 328219Smsmith * All rights reserved. 428219Smsmith * 528219Smsmith * Redistribution and use in source and binary forms, with or without 628219Smsmith * modification, are permitted provided that the following conditions 728219Smsmith * are met: 828219Smsmith * 1. Redistributions of source code must retain the above copyright 928219Smsmith * notice, this list of conditions and the following disclaimer. 1028219Smsmith * 2. Redistributions in binary form must reproduce the above copyright 1128219Smsmith * notice, this list of conditions and the following disclaimer in the 1228219Smsmith * documentation and/or other materials provided with the distribution. 1328219Smsmith * 1428219Smsmith * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1528219Smsmith * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1628219Smsmith * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1728219Smsmith * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1828219Smsmith * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1928219Smsmith * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2028219Smsmith * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2128219Smsmith * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2228219Smsmith * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2328219Smsmith * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2428219Smsmith * SUCH DAMAGE. 2528219Smsmith * 2650477Speter * $FreeBSD: head/sys/dev/ppbus/ppi.c 55977 2000-01-14 15:54:45Z peter $ 2728219Smsmith * 2828219Smsmith */ 2928257Smsmith#include "ppi.h" 3028257Smsmith 3128257Smsmith#if NPPI > 0 3228257Smsmith 3355939Snsouch#include "opt_ppb_1284.h" 3455939Snsouch 3528219Smsmith#include <sys/param.h> 3628219Smsmith#include <sys/systm.h> 3755939Snsouch#include <sys/module.h> 3855939Snsouch#include <sys/bus.h> 3928219Smsmith#include <sys/conf.h> 4028219Smsmith#include <sys/kernel.h> 4142475Snsouch#include <sys/uio.h> 4232178Smsmith#include <sys/fcntl.h> 4328219Smsmith 4442475Snsouch#include <machine/clock.h> 4555939Snsouch#include <machine/bus.h> 4655939Snsouch#include <machine/resource.h> 4755939Snsouch#include <sys/rman.h> 4842475Snsouch 4928219Smsmith#include <dev/ppbus/ppbconf.h> 5042475Snsouch#include <dev/ppbus/ppb_msq.h> 5142475Snsouch 5242475Snsouch#ifdef PERIPH_1284 5342475Snsouch#include <dev/ppbus/ppb_1284.h> 5442475Snsouch#endif 5542475Snsouch 5632178Smsmith#include <dev/ppbus/ppi.h> 5728219Smsmith 5855939Snsouch#include "ppbus_if.h" 5955939Snsouch 6055939Snsouch#include <dev/ppbus/ppbio.h> 6155939Snsouch 6242475Snsouch#define BUFSIZE 512 6332178Smsmith 6428257Smsmithstruct ppi_data { 6528257Smsmith 6632178Smsmith int ppi_unit; 6732178Smsmith int ppi_flags; 6832178Smsmith#define HAVE_PPBUS (1<<0) 6942475Snsouch#define HAD_PPBUS (1<<1) 7028257Smsmith 7142475Snsouch int ppi_count; 7242475Snsouch int ppi_mode; /* IEEE1284 mode */ 7342475Snsouch char ppi_buffer[BUFSIZE]; 7442475Snsouch 7555939Snsouch struct resource *intr_resource; /* interrupt resource */ 7655939Snsouch void *intr_cookie; /* interrupt registration cookie */ 7728257Smsmith}; 7828257Smsmith 7955939Snsouch#define DEVTOSOFTC(dev) \ 8055939Snsouch ((struct ppi_data *)device_get_softc(dev)) 8155939Snsouch#define UNITOSOFTC(unit) \ 8255939Snsouch ((struct ppi_data *)devclass_get_softc(ppi_devclass, (unit))) 8355939Snsouch#define UNITODEVICE(unit) \ 8455939Snsouch (devclass_get_device(ppi_devclass, (unit))) 8528219Smsmith 8655939Snsouchstatic int ppi_probe(device_t); 8755939Snsouchstatic int ppi_attach(device_t); 8855939Snsouchstatic void ppiintr(void *arg); 8928219Smsmith 9055939Snsouchstatic devclass_t ppi_devclass; 9128219Smsmith 9255939Snsouchstatic device_method_t ppi_methods[] = { 9355939Snsouch /* device interface */ 9455939Snsouch DEVMETHOD(device_probe, ppi_probe), 9555939Snsouch DEVMETHOD(device_attach, ppi_attach), 9655939Snsouch 9755939Snsouch { 0, 0 } 9828219Smsmith}; 9928219Smsmith 10055939Snsouchstatic driver_t ppi_driver = { 10155939Snsouch "ppi", 10255939Snsouch ppi_methods, 10355939Snsouch sizeof(struct ppi_data), 10455939Snsouch}; 10555939Snsouch 10628219Smsmithstatic d_open_t ppiopen; 10728219Smsmithstatic d_close_t ppiclose; 10828219Smsmithstatic d_ioctl_t ppiioctl; 10942475Snsouchstatic d_write_t ppiwrite; 11042475Snsouchstatic d_read_t ppiread; 11128219Smsmith 11228261Smsmith#define CDEV_MAJOR 82 11347625Sphkstatic struct cdevsw ppi_cdevsw = { 11447625Sphk /* open */ ppiopen, 11547625Sphk /* close */ ppiclose, 11647625Sphk /* read */ ppiread, 11747625Sphk /* write */ ppiwrite, 11847625Sphk /* ioctl */ ppiioctl, 11947625Sphk /* poll */ nopoll, 12047625Sphk /* mmap */ nommap, 12147625Sphk /* strategy */ nostrategy, 12247625Sphk /* name */ "ppi", 12347625Sphk /* maj */ CDEV_MAJOR, 12447625Sphk /* dump */ nodump, 12547625Sphk /* psize */ nopsize, 12647625Sphk /* flags */ 0, 12747625Sphk /* bmaj */ -1 12847625Sphk}; 12928219Smsmith 13042475Snsouch#ifdef PERIPH_1284 13142475Snsouch 13242475Snsouchstatic void 13355939Snsouchppi_enable_intr(device_t ppidev) 13442475Snsouch{ 13542475Snsouch char r; 13655939Snsouch device_t ppbus = device_get_parent(ppidev); 13742475Snsouch 13855939Snsouch r = ppb_rctr(ppbus); 13955939Snsouch ppb_wctr(ppbus, r | IRQENABLE); 14042475Snsouch 14142475Snsouch return; 14242475Snsouch} 14342475Snsouch 14442475Snsouchstatic void 14555939Snsouchppi_disable_intr(device_t ppidev) 14642475Snsouch{ 14742475Snsouch char r; 14855939Snsouch device_t ppbus = device_get_parent(ppidev); 14942475Snsouch 15055939Snsouch r = ppb_rctr(ppbus); 15155939Snsouch ppb_wctr(ppbus, r & ~IRQENABLE); 15242475Snsouch 15342475Snsouch return; 15442475Snsouch} 15542475Snsouch 15642475Snsouch#endif /* PERIPH_1284 */ 15742475Snsouch 15828219Smsmith/* 15955939Snsouch * ppi_probe() 16028219Smsmith */ 16155939Snsouchstatic int 16255939Snsouchppi_probe(device_t dev) 16328219Smsmith{ 16428219Smsmith struct ppi_data *ppi; 16547640Sphk static int once; 16628219Smsmith 16755939Snsouch /* probe is always ok */ 16855939Snsouch device_set_desc(dev, "Parallel I/O"); 16955939Snsouch 17047640Sphk if (!once++) 17147640Sphk cdevsw_add(&ppi_cdevsw); 17247640Sphk 17355939Snsouch ppi = DEVTOSOFTC(dev); 17428219Smsmith bzero(ppi, sizeof(struct ppi_data)); 17528219Smsmith 17655939Snsouch return (0); 17755939Snsouch} 17828219Smsmith 17955939Snsouch/* 18055939Snsouch * ppi_attach() 18155939Snsouch */ 18255939Snsouchstatic int 18355939Snsouchppi_attach(device_t dev) 18455939Snsouch{ 18555939Snsouch uintptr_t irq; 18655939Snsouch int zero = 0; 18755939Snsouch struct ppi_data *ppi = DEVTOSOFTC(dev); 18828219Smsmith 18955939Snsouch /* retrive the irq */ 19055939Snsouch BUS_READ_IVAR(device_get_parent(dev), dev, PPBUS_IVAR_IRQ, &irq); 19128219Smsmith 19255939Snsouch /* declare our interrupt handler */ 19355939Snsouch ppi->intr_resource = bus_alloc_resource(dev, SYS_RES_IRQ, 19455939Snsouch &zero, irq, irq, 1, RF_ACTIVE); 19528219Smsmith 19655939Snsouch make_dev(&ppi_cdevsw, device_get_unit(dev), /* XXX cleanup */ 19755939Snsouch UID_ROOT, GID_WHEEL, 19855939Snsouch 0600, "ppi%d", device_get_unit(dev)); 19928219Smsmith 20055939Snsouch return (0); 20128219Smsmith} 20228219Smsmith 20342475Snsouch/* 20442475Snsouch * Cable 20542475Snsouch * ----- 20642475Snsouch * 20742475Snsouch * Use an IEEE1284 compliant (DB25/DB25) cable with the following tricks: 20842475Snsouch * 20942475Snsouch * nStrobe <-> nAck 1 <-> 10 21042475Snsouch * nAutofd <-> Busy 11 <-> 14 21142475Snsouch * nSelectin <-> Select 17 <-> 13 21242475Snsouch * nInit <-> nFault 15 <-> 16 21342475Snsouch * 21442475Snsouch */ 21528219Smsmithstatic void 21655939Snsouchppiintr(void *arg) 21728219Smsmith{ 21842475Snsouch#ifdef PERIPH_1284 21955939Snsouch device_t ppidev = (device_t)arg; 22055939Snsouch device_t ppbus = device_get_parent(ppidev); 22155939Snsouch struct ppi_data *ppi = DEVTOSOFTC(ppidev); 22242475Snsouch 22355939Snsouch ppi_disable_intr(ppidev); 22442475Snsouch 22555939Snsouch switch (ppb_1284_get_state(ppbus)) { 22642475Snsouch 22742475Snsouch /* accept IEEE1284 negociation then wakeup an waiting process to 22842475Snsouch * continue negociation at process level */ 22942475Snsouch case PPB_FORWARD_IDLE: 23042475Snsouch /* Event 1 */ 23155939Snsouch if ((ppb_rstr(ppbus) & (SELECT | nBUSY)) == 23242475Snsouch (SELECT | nBUSY)) { 23342475Snsouch /* IEEE1284 negociation */ 23442475Snsouch#ifdef DEBUG_1284 23542475Snsouch printf("N"); 23642475Snsouch#endif 23742475Snsouch 23842475Snsouch /* Event 2 - prepare for reading the ext. value */ 23955939Snsouch ppb_wctr(ppbus, (PCD | STROBE | nINIT) & ~SELECTIN); 24042475Snsouch 24155939Snsouch ppb_1284_set_state(ppbus, PPB_NEGOCIATION); 24242475Snsouch 24342475Snsouch } else { 24442475Snsouch#ifdef DEBUG_1284 24555939Snsouch printf("0x%x", ppb_rstr(ppbus)); 24642475Snsouch#endif 24755939Snsouch ppb_peripheral_terminate(ppbus, PPB_DONTWAIT); 24842475Snsouch break; 24942475Snsouch } 25042475Snsouch 25142475Snsouch /* wake up any process waiting for negociation from 25242475Snsouch * remote master host */ 25342475Snsouch 25442475Snsouch /* XXX should set a variable to warn the process about 25542475Snsouch * the interrupt */ 25642475Snsouch 25742475Snsouch wakeup(ppi); 25842475Snsouch break; 25942475Snsouch default: 26042475Snsouch#ifdef DEBUG_1284 26155977Speter printf("?%d", ppb_1284_get_state(ppbus)); 26242475Snsouch#endif 26355939Snsouch ppb_1284_set_state(ppbus, PPB_FORWARD_IDLE); 26455939Snsouch ppb_set_mode(ppbus, PPB_COMPATIBLE); 26542475Snsouch break; 26642475Snsouch } 26742475Snsouch 26855939Snsouch ppi_enable_intr(ppidev); 26942475Snsouch#endif /* PERIPH_1284 */ 27042475Snsouch 27128219Smsmith return; 27228219Smsmith} 27328219Smsmith 27428219Smsmithstatic int 27528219Smsmithppiopen(dev_t dev, int flags, int fmt, struct proc *p) 27628219Smsmith{ 27728257Smsmith u_int unit = minor(dev); 27855939Snsouch struct ppi_data *ppi = UNITOSOFTC(unit); 27955939Snsouch device_t ppidev = UNITODEVICE(unit); 28055939Snsouch device_t ppbus = device_get_parent(ppidev); 28132178Smsmith int res; 28228257Smsmith 28355939Snsouch if (!ppi) 28428257Smsmith return (ENXIO); 28528257Smsmith 28642475Snsouch if (!(ppi->ppi_flags & HAVE_PPBUS)) { 28755939Snsouch if ((res = ppb_request_bus(ppbus, ppidev, 28842475Snsouch (flags & O_NONBLOCK) ? PPB_DONTWAIT : 28942475Snsouch (PPB_WAIT | PPB_INTR)))) 29032178Smsmith return (res); 29128257Smsmith 29242475Snsouch ppi->ppi_flags |= HAVE_PPBUS; 29355939Snsouch 29455939Snsouch /* register our interrupt handler */ 29555939Snsouch BUS_SETUP_INTR(device_get_parent(ppidev), ppidev, ppi->intr_resource, 29655939Snsouch INTR_TYPE_TTY, ppiintr, dev, &ppi->intr_cookie); 29742475Snsouch } 29842475Snsouch ppi->ppi_count += 1; 29942475Snsouch 30032178Smsmith return (0); 30128219Smsmith} 30228219Smsmith 30328219Smsmithstatic int 30428219Smsmithppiclose(dev_t dev, int flags, int fmt, struct proc *p) 30528219Smsmith{ 30632178Smsmith u_int unit = minor(dev); 30755939Snsouch struct ppi_data *ppi = UNITOSOFTC(unit); 30855939Snsouch device_t ppidev = UNITODEVICE(unit); 30955939Snsouch device_t ppbus = device_get_parent(ppidev); 31032178Smsmith 31142475Snsouch ppi->ppi_count --; 31242475Snsouch if (!ppi->ppi_count) { 31342475Snsouch 31442475Snsouch#ifdef PERIPH_1284 31555939Snsouch switch (ppb_1284_get_state(ppbus)) { 31642475Snsouch case PPB_PERIPHERAL_IDLE: 31755939Snsouch ppb_peripheral_terminate(ppbus, 0); 31842475Snsouch break; 31942475Snsouch case PPB_REVERSE_IDLE: 32042475Snsouch case PPB_EPP_IDLE: 32142475Snsouch case PPB_ECP_FORWARD_IDLE: 32242475Snsouch default: 32355939Snsouch ppb_1284_terminate(ppbus); 32442475Snsouch break; 32542475Snsouch } 32642475Snsouch#endif /* PERIPH_1284 */ 32742475Snsouch 32855939Snsouch /* unregistration of interrupt forced by release */ 32955939Snsouch ppb_release_bus(ppbus, ppidev); 33055939Snsouch 33142475Snsouch ppi->ppi_flags &= ~HAVE_PPBUS; 33242475Snsouch } 33342475Snsouch 33432178Smsmith return (0); 33528219Smsmith} 33628219Smsmith 33742475Snsouch/* 33842475Snsouch * ppiread() 33942475Snsouch * 34042475Snsouch * IEEE1284 compliant read. 34142475Snsouch * 34242475Snsouch * First, try negociation to BYTE then NIBBLE mode 34342475Snsouch * If no data is available, wait for it otherwise transfer as much as possible 34442475Snsouch */ 34528219Smsmithstatic int 34642475Snsouchppiread(dev_t dev, struct uio *uio, int ioflag) 34742475Snsouch{ 34842475Snsouch#ifdef PERIPH_1284 34942475Snsouch u_int unit = minor(dev); 35055939Snsouch struct ppi_data *ppi = UNITOSOFTC(unit); 35155939Snsouch device_t ppidev = UNITODEVICE(unit); 35255939Snsouch device_t ppbus = device_get_parent(ppidev); 35342475Snsouch int len, error = 0; 35442475Snsouch 35555939Snsouch switch (ppb_1284_get_state(ppbus)) { 35642475Snsouch case PPB_PERIPHERAL_IDLE: 35755939Snsouch ppb_peripheral_terminate(ppbus, 0); 35842475Snsouch /* fall throught */ 35942475Snsouch 36042475Snsouch case PPB_FORWARD_IDLE: 36142475Snsouch /* if can't negociate NIBBLE mode then try BYTE mode, 36242475Snsouch * the peripheral may be a computer 36342475Snsouch */ 36455939Snsouch if ((ppb_1284_negociate(ppbus, 36542475Snsouch ppi->ppi_mode = PPB_NIBBLE, 0))) { 36642475Snsouch 36742475Snsouch /* XXX Wait 2 seconds to let the remote host some 36842475Snsouch * time to terminate its interrupt 36942475Snsouch */ 37042475Snsouch tsleep(ppi, PPBPRI, "ppiread", 2*hz); 37142475Snsouch 37255939Snsouch if ((error = ppb_1284_negociate(ppbus, 37342475Snsouch ppi->ppi_mode = PPB_BYTE, 0))) 37442475Snsouch return (error); 37542475Snsouch } 37642475Snsouch break; 37742475Snsouch 37842475Snsouch case PPB_REVERSE_IDLE: 37942475Snsouch case PPB_EPP_IDLE: 38042475Snsouch case PPB_ECP_FORWARD_IDLE: 38142475Snsouch default: 38242475Snsouch break; 38342475Snsouch } 38442475Snsouch 38542475Snsouch#ifdef DEBUG_1284 38642475Snsouch printf("N"); 38742475Snsouch#endif 38842475Snsouch /* read data */ 38942475Snsouch len = 0; 39042475Snsouch while (uio->uio_resid) { 39155939Snsouch if ((error = ppb_1284_read(ppbus, ppi->ppi_mode, 39242475Snsouch ppi->ppi_buffer, min(BUFSIZE, uio->uio_resid), 39342475Snsouch &len))) { 39442475Snsouch goto error; 39542475Snsouch } 39642475Snsouch 39742475Snsouch if (!len) 39842475Snsouch goto error; /* no more data */ 39942475Snsouch 40042475Snsouch#ifdef DEBUG_1284 40142475Snsouch printf("d"); 40242475Snsouch#endif 40342475Snsouch if ((error = uiomove(ppi->ppi_buffer, len, uio))) 40442475Snsouch goto error; 40542475Snsouch } 40642475Snsouch 40742475Snsoucherror: 40842475Snsouch 40942475Snsouch#else /* PERIPH_1284 */ 41042475Snsouch int error = ENODEV; 41142475Snsouch#endif 41242475Snsouch 41342475Snsouch return (error); 41442475Snsouch} 41542475Snsouch 41642475Snsouch/* 41742475Snsouch * ppiwrite() 41842475Snsouch * 41942475Snsouch * IEEE1284 compliant write 42042475Snsouch * 42142475Snsouch * Actually, this is the peripheral side of a remote IEEE1284 read 42242475Snsouch * 42342475Snsouch * The first part of the negociation (IEEE1284 device detection) is 42442475Snsouch * done at interrupt level, then the remaining is done by the writing 42542475Snsouch * process 42642475Snsouch * 42742475Snsouch * Once negociation done, transfer data 42842475Snsouch */ 42942475Snsouchstatic int 43042475Snsouchppiwrite(dev_t dev, struct uio *uio, int ioflag) 43142475Snsouch{ 43242475Snsouch#ifdef PERIPH_1284 43342475Snsouch u_int unit = minor(dev); 43455939Snsouch struct ppi_data *ppi = UNITOSOFTC(unit); 43555939Snsouch device_t ppidev = UNITODEVICE(unit); 43655939Snsouch device_t ppbus = device_get_parent(ppidev); 43742475Snsouch int len, error = 0, sent; 43842475Snsouch 43942475Snsouch#if 0 44042475Snsouch int ret; 44142475Snsouch 44242475Snsouch #define ADDRESS MS_PARAM(0, 0, MS_TYP_PTR) 44342475Snsouch #define LENGTH MS_PARAM(0, 1, MS_TYP_INT) 44442475Snsouch 44542475Snsouch struct ppb_microseq msq[] = { 44642475Snsouch { MS_OP_PUT, { MS_UNKNOWN, MS_UNKNOWN, MS_UNKNOWN } }, 44742475Snsouch MS_RET(0) 44842475Snsouch }; 44942475Snsouch 45042475Snsouch /* negociate ECP mode */ 45155939Snsouch if (ppb_1284_negociate(ppbus, PPB_ECP, 0)) { 45242475Snsouch printf("ppiwrite: ECP negociation failed\n"); 45342475Snsouch } 45442475Snsouch 45542475Snsouch while (!error && (len = min(uio->uio_resid, BUFSIZE))) { 45642475Snsouch uiomove(ppi->ppi_buffer, len, uio); 45742475Snsouch 45842475Snsouch ppb_MS_init_msq(msq, 2, ADDRESS, ppi->ppi_buffer, LENGTH, len); 45942475Snsouch 46055939Snsouch error = ppb_MS_microseq(ppbus, msq, &ret); 46142475Snsouch } 46242475Snsouch#endif 46342475Snsouch 46442475Snsouch /* we have to be peripheral to be able to send data, so 46542475Snsouch * wait for the appropriate state 46642475Snsouch */ 46755957Snsouch if (ppb_1284_get_state(ppbus) < PPB_PERIPHERAL_NEGOCIATION) 46855939Snsouch ppb_1284_terminate(ppbus); 46942475Snsouch 47055957Snsouch while (ppb_1284_get_state(ppbus) != PPB_PERIPHERAL_IDLE) { 47142475Snsouch /* XXX should check a variable before sleeping */ 47242475Snsouch#ifdef DEBUG_1284 47342475Snsouch printf("s"); 47442475Snsouch#endif 47542475Snsouch 47655939Snsouch ppi_enable_intr(ppidev); 47742475Snsouch 47842475Snsouch /* sleep until IEEE1284 negociation starts */ 47942475Snsouch error = tsleep(ppi, PCATCH | PPBPRI, "ppiwrite", 0); 48042475Snsouch 48142475Snsouch switch (error) { 48242475Snsouch case 0: 48342475Snsouch /* negociate peripheral side with BYTE mode */ 48455939Snsouch ppb_peripheral_negociate(ppbus, PPB_BYTE, 0); 48542475Snsouch break; 48642475Snsouch case EWOULDBLOCK: 48742475Snsouch break; 48842475Snsouch default: 48942475Snsouch goto error; 49042475Snsouch } 49142475Snsouch } 49242475Snsouch#ifdef DEBUG_1284 49342475Snsouch printf("N"); 49442475Snsouch#endif 49542475Snsouch 49642475Snsouch /* negociation done, write bytes to master host */ 49743301Sdillon while ((len = min(uio->uio_resid, BUFSIZE)) != 0) { 49842475Snsouch uiomove(ppi->ppi_buffer, len, uio); 49955939Snsouch if ((error = byte_peripheral_write(ppbus, 50042475Snsouch ppi->ppi_buffer, len, &sent))) 50142475Snsouch goto error; 50242475Snsouch#ifdef DEBUG_1284 50342475Snsouch printf("d"); 50442475Snsouch#endif 50542475Snsouch } 50642475Snsouch 50742475Snsoucherror: 50842475Snsouch 50942475Snsouch#else /* PERIPH_1284 */ 51042475Snsouch int error = ENODEV; 51142475Snsouch#endif 51242475Snsouch 51342475Snsouch return (error); 51442475Snsouch} 51542475Snsouch 51642475Snsouchstatic int 51736735Sdfrppiioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct proc *p) 51828219Smsmith{ 51932178Smsmith u_int unit = minor(dev); 52055939Snsouch device_t ppidev = UNITODEVICE(unit); 52155939Snsouch device_t ppbus = device_get_parent(ppidev); 52232178Smsmith int error = 0; 52332178Smsmith u_int8_t *val = (u_int8_t *)data; 52432178Smsmith 52532178Smsmith switch (cmd) { 52632178Smsmith 52732178Smsmith case PPIGDATA: /* get data register */ 52855939Snsouch *val = ppb_rdtr(ppbus); 52932178Smsmith break; 53032178Smsmith case PPIGSTATUS: /* get status bits */ 53155939Snsouch *val = ppb_rstr(ppbus); 53232178Smsmith break; 53332178Smsmith case PPIGCTRL: /* get control bits */ 53455939Snsouch *val = ppb_rctr(ppbus); 53532178Smsmith break; 53643433Snsouch case PPIGEPPD: /* get EPP data bits */ 53755939Snsouch *val = ppb_repp_D(ppbus); 53832178Smsmith break; 53932178Smsmith case PPIGECR: /* get ECP bits */ 54055939Snsouch *val = ppb_recr(ppbus); 54132178Smsmith break; 54232178Smsmith case PPIGFIFO: /* read FIFO */ 54355939Snsouch *val = ppb_rfifo(ppbus); 54432178Smsmith break; 54532178Smsmith case PPISDATA: /* set data register */ 54655939Snsouch ppb_wdtr(ppbus, *val); 54732178Smsmith break; 54832178Smsmith case PPISSTATUS: /* set status bits */ 54955939Snsouch ppb_wstr(ppbus, *val); 55032178Smsmith break; 55132178Smsmith case PPISCTRL: /* set control bits */ 55255939Snsouch ppb_wctr(ppbus, *val); 55332178Smsmith break; 55443433Snsouch case PPISEPPD: /* set EPP data bits */ 55555939Snsouch ppb_wepp_D(ppbus, *val); 55632178Smsmith break; 55732178Smsmith case PPISECR: /* set ECP bits */ 55855939Snsouch ppb_wecr(ppbus, *val); 55932178Smsmith break; 56032178Smsmith case PPISFIFO: /* write FIFO */ 56155939Snsouch ppb_wfifo(ppbus, *val); 56232178Smsmith break; 56343433Snsouch case PPIGEPPA: /* get EPP address bits */ 56455939Snsouch *val = ppb_repp_A(ppbus); 56543433Snsouch break; 56643433Snsouch case PPISEPPA: /* set EPP address bits */ 56755939Snsouch ppb_wepp_A(ppbus, *val); 56843433Snsouch break; 56932178Smsmith default: 57032178Smsmith error = ENOTTY; 57132178Smsmith break; 57232178Smsmith } 57332178Smsmith 57432178Smsmith return (error); 57528219Smsmith} 57628219Smsmith 57755939SnsouchDRIVER_MODULE(ppi, ppbus, ppi_driver, ppi_devclass, 0, 0); 57855939Snsouch 57928257Smsmith#endif /* NPPI */ 580