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 * 2628219Smsmith * 2728219Smsmith */ 28119418Sobrien 29119418Sobrien#include <sys/cdefs.h> 30119418Sobrien__FBSDID("$FreeBSD$"); 3155939Snsouch#include "opt_ppb_1284.h" 3255939Snsouch 3328219Smsmith#include <sys/param.h> 3428219Smsmith#include <sys/systm.h> 3555939Snsouch#include <sys/module.h> 3655939Snsouch#include <sys/bus.h> 3728219Smsmith#include <sys/conf.h> 3828219Smsmith#include <sys/kernel.h> 39187576Sjhb#include <sys/lock.h> 40187576Sjhb#include <sys/sx.h> 4142475Snsouch#include <sys/uio.h> 4232178Smsmith#include <sys/fcntl.h> 4328219Smsmith 4455939Snsouch#include <machine/bus.h> 4555939Snsouch#include <machine/resource.h> 4655939Snsouch#include <sys/rman.h> 4742475Snsouch 4828219Smsmith#include <dev/ppbus/ppbconf.h> 4942475Snsouch#include <dev/ppbus/ppb_msq.h> 5042475Snsouch 5142475Snsouch#ifdef PERIPH_1284 52187576Sjhb#include <sys/malloc.h> 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 { 65184130Sjhb device_t ppi_device; 66184130Sjhb struct cdev *ppi_cdev; 67187576Sjhb struct sx ppi_lock; 6832178Smsmith int ppi_flags; 6932178Smsmith#define HAVE_PPBUS (1<<0) 7028257Smsmith 7142475Snsouch int ppi_mode; /* IEEE1284 mode */ 7242475Snsouch char ppi_buffer[BUFSIZE]; 7342475Snsouch 7460194Sn_hibma#ifdef PERIPH_1284 7555939Snsouch struct resource *intr_resource; /* interrupt resource */ 7655939Snsouch void *intr_cookie; /* interrupt registration cookie */ 7760194Sn_hibma#endif /* PERIPH_1284 */ 7828257Smsmith}; 7928257Smsmith 8055939Snsouch#define DEVTOSOFTC(dev) \ 8155939Snsouch ((struct ppi_data *)device_get_softc(dev)) 8228219Smsmith 8355939Snsouchstatic devclass_t ppi_devclass; 8428219Smsmith 85187576Sjhb#ifdef PERIPH_1284 86187576Sjhbstatic void ppiintr(void *arg); 87187576Sjhb#endif 88187576Sjhb 8928219Smsmithstatic d_open_t ppiopen; 9028219Smsmithstatic d_close_t ppiclose; 9128219Smsmithstatic d_ioctl_t ppiioctl; 9242475Snsouchstatic d_write_t ppiwrite; 9342475Snsouchstatic d_read_t ppiread; 9428219Smsmith 9547625Sphkstatic struct cdevsw ppi_cdevsw = { 96126080Sphk .d_version = D_VERSION, 97111815Sphk .d_open = ppiopen, 98111815Sphk .d_close = ppiclose, 99111815Sphk .d_read = ppiread, 100111815Sphk .d_write = ppiwrite, 101111815Sphk .d_ioctl = ppiioctl, 102111815Sphk .d_name = "ppi", 10347625Sphk}; 10428219Smsmith 10542475Snsouch#ifdef PERIPH_1284 10642475Snsouch 10742475Snsouchstatic void 10855939Snsouchppi_enable_intr(device_t ppidev) 10942475Snsouch{ 11042475Snsouch char r; 11155939Snsouch device_t ppbus = device_get_parent(ppidev); 11242475Snsouch 11355939Snsouch r = ppb_rctr(ppbus); 11455939Snsouch ppb_wctr(ppbus, r | IRQENABLE); 11542475Snsouch 11642475Snsouch return; 11742475Snsouch} 11842475Snsouch 11942475Snsouchstatic void 12055939Snsouchppi_disable_intr(device_t ppidev) 12142475Snsouch{ 12242475Snsouch char r; 123185003Sjhb device_t ppbus = device_get_parent(ppidev); 12442475Snsouch 12555939Snsouch r = ppb_rctr(ppbus); 12655939Snsouch ppb_wctr(ppbus, r & ~IRQENABLE); 12742475Snsouch 12842475Snsouch return; 12942475Snsouch} 13042475Snsouch 13142475Snsouch#endif /* PERIPH_1284 */ 13242475Snsouch 13356455Speterstatic void 13456455Speterppi_identify(driver_t *driver, device_t parent) 13556455Speter{ 13656455Speter 137127189Sguido device_t dev; 138127189Sguido 139155921Sjhb dev = device_find_child(parent, "ppi", -1); 140127189Sguido if (!dev) 141127189Sguido BUS_ADD_CHILD(parent, 0, "ppi", -1); 14256455Speter} 14356455Speter 14428219Smsmith/* 14555939Snsouch * ppi_probe() 14628219Smsmith */ 14755939Snsouchstatic int 14855939Snsouchppi_probe(device_t dev) 14928219Smsmith{ 15028219Smsmith struct ppi_data *ppi; 15128219Smsmith 15255939Snsouch /* probe is always ok */ 15355939Snsouch device_set_desc(dev, "Parallel I/O"); 15455939Snsouch 15555939Snsouch ppi = DEVTOSOFTC(dev); 15628219Smsmith 15755939Snsouch return (0); 15855939Snsouch} 15928219Smsmith 16055939Snsouch/* 16155939Snsouch * ppi_attach() 16255939Snsouch */ 16355939Snsouchstatic int 16455939Snsouchppi_attach(device_t dev) 16555939Snsouch{ 166184130Sjhb struct ppi_data *ppi = DEVTOSOFTC(dev); 16760194Sn_hibma#ifdef PERIPH_1284 168187576Sjhb int error, rid = 0; 16928219Smsmith 17055939Snsouch /* declare our interrupt handler */ 171183053Sjhb ppi->intr_resource = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 172183053Sjhb RF_ACTIVE); 173187576Sjhb if (ppi->intr_resource) { 174187576Sjhb /* register our interrupt handler */ 175187576Sjhb error = bus_setup_intr(dev, ppi->intr_resource, 176187576Sjhb INTR_TYPE_TTY | INTR_MPSAFE, NULL, ppiintr, dev, 177187576Sjhb &ppi->intr_cookie); 178187576Sjhb if (error) { 179187576Sjhb bus_release_resource(dev, SYS_RES_IRQ, rid, 180187576Sjhb ppi->intr_resource); 181187576Sjhb device_printf(dev, 182187576Sjhb "Unable to register interrupt handler\n"); 183187576Sjhb return (error); 184187576Sjhb } 185187576Sjhb } 18660194Sn_hibma#endif /* PERIPH_1284 */ 18728219Smsmith 188187576Sjhb sx_init(&ppi->ppi_lock, "ppi"); 189184130Sjhb ppi->ppi_cdev = make_dev(&ppi_cdevsw, device_get_unit(dev), 19055939Snsouch UID_ROOT, GID_WHEEL, 19155939Snsouch 0600, "ppi%d", device_get_unit(dev)); 192184130Sjhb if (ppi->ppi_cdev == NULL) { 193184164Sjhb device_printf(dev, "Failed to create character device\n"); 194184130Sjhb return (ENXIO); 195184130Sjhb } 196184130Sjhb ppi->ppi_cdev->si_drv1 = ppi; 197184130Sjhb ppi->ppi_device = dev; 19828219Smsmith 19955939Snsouch return (0); 20028219Smsmith} 20128219Smsmith 202187576Sjhbstatic int 203187576Sjhbppi_detach(device_t dev) 204187576Sjhb{ 205187576Sjhb struct ppi_data *ppi = DEVTOSOFTC(dev); 206187576Sjhb 207187576Sjhb destroy_dev(ppi->ppi_cdev); 20860194Sn_hibma#ifdef PERIPH_1284 209187576Sjhb if (ppi->intr_resource != NULL) { 210187576Sjhb bus_teardown_intr(dev, ppi->intr_resource, ppi->intr_cookie); 211187576Sjhb bus_release_resource(dev, SYS_RES_IRQ, 0, ppi->intr_resource); 212187576Sjhb } 213187576Sjhb#endif 214187576Sjhb sx_destroy(&ppi->ppi_lock); 215187576Sjhb return (0); 216187576Sjhb} 217187576Sjhb 218187576Sjhb#ifdef PERIPH_1284 21942475Snsouch/* 22042475Snsouch * Cable 22142475Snsouch * ----- 22242475Snsouch * 22342475Snsouch * Use an IEEE1284 compliant (DB25/DB25) cable with the following tricks: 22442475Snsouch * 22542475Snsouch * nStrobe <-> nAck 1 <-> 10 22642475Snsouch * nAutofd <-> Busy 11 <-> 14 22742475Snsouch * nSelectin <-> Select 17 <-> 13 22842475Snsouch * nInit <-> nFault 15 <-> 16 22942475Snsouch * 23042475Snsouch */ 23128219Smsmithstatic void 23255939Snsouchppiintr(void *arg) 23328219Smsmith{ 23455939Snsouch device_t ppidev = (device_t)arg; 235185003Sjhb device_t ppbus = device_get_parent(ppidev); 23655939Snsouch struct ppi_data *ppi = DEVTOSOFTC(ppidev); 23742475Snsouch 238187576Sjhb ppb_assert_locked(ppbus); 23955939Snsouch ppi_disable_intr(ppidev); 24042475Snsouch 24155939Snsouch switch (ppb_1284_get_state(ppbus)) { 24242475Snsouch 243108470Sschweikh /* accept IEEE1284 negotiation then wakeup a waiting process to 244108470Sschweikh * continue negotiation at process level */ 24542475Snsouch case PPB_FORWARD_IDLE: 24642475Snsouch /* Event 1 */ 24755939Snsouch if ((ppb_rstr(ppbus) & (SELECT | nBUSY)) == 24842475Snsouch (SELECT | nBUSY)) { 249108470Sschweikh /* IEEE1284 negotiation */ 25042475Snsouch#ifdef DEBUG_1284 25142475Snsouch printf("N"); 25242475Snsouch#endif 25342475Snsouch 25442475Snsouch /* Event 2 - prepare for reading the ext. value */ 25555939Snsouch ppb_wctr(ppbus, (PCD | STROBE | nINIT) & ~SELECTIN); 25642475Snsouch 25755939Snsouch ppb_1284_set_state(ppbus, PPB_NEGOCIATION); 25842475Snsouch 25942475Snsouch } else { 26042475Snsouch#ifdef DEBUG_1284 26155939Snsouch printf("0x%x", ppb_rstr(ppbus)); 26242475Snsouch#endif 26355939Snsouch ppb_peripheral_terminate(ppbus, PPB_DONTWAIT); 26442475Snsouch break; 26542475Snsouch } 26642475Snsouch 267108470Sschweikh /* wake up any process waiting for negotiation from 26842475Snsouch * remote master host */ 26942475Snsouch 27042475Snsouch /* XXX should set a variable to warn the process about 27142475Snsouch * the interrupt */ 27242475Snsouch 27342475Snsouch wakeup(ppi); 27442475Snsouch break; 27542475Snsouch default: 27642475Snsouch#ifdef DEBUG_1284 27755977Speter printf("?%d", ppb_1284_get_state(ppbus)); 27842475Snsouch#endif 27955939Snsouch ppb_1284_set_state(ppbus, PPB_FORWARD_IDLE); 28055939Snsouch ppb_set_mode(ppbus, PPB_COMPATIBLE); 28142475Snsouch break; 28242475Snsouch } 28342475Snsouch 28455939Snsouch ppi_enable_intr(ppidev); 28542475Snsouch 28628219Smsmith return; 28728219Smsmith} 28860194Sn_hibma#endif /* PERIPH_1284 */ 28928219Smsmith 29028219Smsmithstatic int 291130585Sphkppiopen(struct cdev *dev, int flags, int fmt, struct thread *td) 29228219Smsmith{ 293184130Sjhb struct ppi_data *ppi = dev->si_drv1; 294184130Sjhb device_t ppidev = ppi->ppi_device; 295185003Sjhb device_t ppbus = device_get_parent(ppidev); 29632178Smsmith int res; 29728257Smsmith 298187576Sjhb sx_xlock(&ppi->ppi_lock); 29942475Snsouch if (!(ppi->ppi_flags & HAVE_PPBUS)) { 300187576Sjhb ppb_lock(ppbus); 301187576Sjhb res = ppb_request_bus(ppbus, ppidev, 302187576Sjhb (flags & O_NONBLOCK) ? PPB_DONTWAIT : PPB_WAIT | PPB_INTR); 303187576Sjhb ppb_unlock(ppbus); 304187576Sjhb if (res) { 305187576Sjhb sx_xunlock(&ppi->ppi_lock); 30632178Smsmith return (res); 307187576Sjhb } 30828257Smsmith 30942475Snsouch ppi->ppi_flags |= HAVE_PPBUS; 31042475Snsouch } 311187576Sjhb sx_xunlock(&ppi->ppi_lock); 31242475Snsouch 31332178Smsmith return (0); 31428219Smsmith} 31528219Smsmith 31628219Smsmithstatic int 317130585Sphkppiclose(struct cdev *dev, int flags, int fmt, struct thread *td) 31828219Smsmith{ 319184130Sjhb struct ppi_data *ppi = dev->si_drv1; 320184130Sjhb device_t ppidev = ppi->ppi_device; 321185003Sjhb device_t ppbus = device_get_parent(ppidev); 32232178Smsmith 323187576Sjhb sx_xlock(&ppi->ppi_lock); 324187576Sjhb ppb_lock(ppbus); 32542475Snsouch#ifdef PERIPH_1284 326187576Sjhb switch (ppb_1284_get_state(ppbus)) { 327187576Sjhb case PPB_PERIPHERAL_IDLE: 328187576Sjhb ppb_peripheral_terminate(ppbus, 0); 329187576Sjhb break; 330187576Sjhb case PPB_REVERSE_IDLE: 331187576Sjhb case PPB_EPP_IDLE: 332187576Sjhb case PPB_ECP_FORWARD_IDLE: 333187576Sjhb default: 334187576Sjhb ppb_1284_terminate(ppbus); 335187576Sjhb break; 336187576Sjhb } 33742475Snsouch#endif /* PERIPH_1284 */ 33842475Snsouch 339187576Sjhb /* unregistration of interrupt forced by release */ 340187576Sjhb ppb_release_bus(ppbus, ppidev); 341187576Sjhb ppb_unlock(ppbus); 34255939Snsouch 343187576Sjhb ppi->ppi_flags &= ~HAVE_PPBUS; 344187576Sjhb sx_xunlock(&ppi->ppi_lock); 34542475Snsouch 34632178Smsmith return (0); 34728219Smsmith} 34828219Smsmith 34942475Snsouch/* 35042475Snsouch * ppiread() 35142475Snsouch * 35242475Snsouch * IEEE1284 compliant read. 35342475Snsouch * 354108470Sschweikh * First, try negotiation to BYTE then NIBBLE mode 35542475Snsouch * If no data is available, wait for it otherwise transfer as much as possible 35642475Snsouch */ 35728219Smsmithstatic int 358130585Sphkppiread(struct cdev *dev, struct uio *uio, int ioflag) 35942475Snsouch{ 36042475Snsouch#ifdef PERIPH_1284 361184130Sjhb struct ppi_data *ppi = dev->si_drv1; 362184130Sjhb device_t ppidev = ppi->ppi_device; 363185003Sjhb device_t ppbus = device_get_parent(ppidev); 36442475Snsouch int len, error = 0; 365187576Sjhb char *buffer; 36642475Snsouch 367187576Sjhb buffer = malloc(BUFSIZE, M_DEVBUF, M_WAITOK); 368187576Sjhb 369187576Sjhb ppb_lock(ppbus); 37055939Snsouch switch (ppb_1284_get_state(ppbus)) { 37142475Snsouch case PPB_PERIPHERAL_IDLE: 37255939Snsouch ppb_peripheral_terminate(ppbus, 0); 373102412Scharnier /* FALLTHROUGH */ 37442475Snsouch 37542475Snsouch case PPB_FORWARD_IDLE: 376108470Sschweikh /* if can't negotiate NIBBLE mode then try BYTE mode, 37742475Snsouch * the peripheral may be a computer 37842475Snsouch */ 37955939Snsouch if ((ppb_1284_negociate(ppbus, 38042475Snsouch ppi->ppi_mode = PPB_NIBBLE, 0))) { 38142475Snsouch 38242475Snsouch /* XXX Wait 2 seconds to let the remote host some 38342475Snsouch * time to terminate its interrupt 38442475Snsouch */ 385187576Sjhb ppb_sleep(ppbus, ppi, PPBPRI, "ppiread", 2 * hz); 386185003Sjhb 38755939Snsouch if ((error = ppb_1284_negociate(ppbus, 388187576Sjhb ppi->ppi_mode = PPB_BYTE, 0))) { 389187576Sjhb ppb_unlock(ppbus); 390187576Sjhb free(buffer, M_DEVBUF); 39142475Snsouch return (error); 392187576Sjhb } 39342475Snsouch } 39442475Snsouch break; 39542475Snsouch 39642475Snsouch case PPB_REVERSE_IDLE: 39742475Snsouch case PPB_EPP_IDLE: 39842475Snsouch case PPB_ECP_FORWARD_IDLE: 39942475Snsouch default: 40042475Snsouch break; 40142475Snsouch } 40242475Snsouch 40342475Snsouch#ifdef DEBUG_1284 40442475Snsouch printf("N"); 40542475Snsouch#endif 40642475Snsouch /* read data */ 40742475Snsouch len = 0; 40842475Snsouch while (uio->uio_resid) { 409187576Sjhb error = ppb_1284_read(ppbus, ppi->ppi_mode, 410187576Sjhb buffer, min(BUFSIZE, uio->uio_resid), &len); 411187576Sjhb ppb_unlock(ppbus); 412187576Sjhb if (error) 41342475Snsouch goto error; 41442475Snsouch 41542475Snsouch if (!len) 41642475Snsouch goto error; /* no more data */ 41742475Snsouch 41842475Snsouch#ifdef DEBUG_1284 41942475Snsouch printf("d"); 42042475Snsouch#endif 421187576Sjhb if ((error = uiomove(buffer, len, uio))) 42242475Snsouch goto error; 423187576Sjhb ppb_lock(ppbus); 42442475Snsouch } 425187576Sjhb ppb_unlock(ppbus); 42642475Snsouch 42742475Snsoucherror: 428187576Sjhb free(buffer, M_DEVBUF); 42942475Snsouch#else /* PERIPH_1284 */ 43042475Snsouch int error = ENODEV; 43142475Snsouch#endif 43242475Snsouch 43342475Snsouch return (error); 43442475Snsouch} 43542475Snsouch 43642475Snsouch/* 43742475Snsouch * ppiwrite() 43842475Snsouch * 43942475Snsouch * IEEE1284 compliant write 44042475Snsouch * 44142475Snsouch * Actually, this is the peripheral side of a remote IEEE1284 read 44242475Snsouch * 443108470Sschweikh * The first part of the negotiation (IEEE1284 device detection) is 44442475Snsouch * done at interrupt level, then the remaining is done by the writing 44542475Snsouch * process 44642475Snsouch * 447108470Sschweikh * Once negotiation done, transfer data 44842475Snsouch */ 44942475Snsouchstatic int 450130585Sphkppiwrite(struct cdev *dev, struct uio *uio, int ioflag) 45142475Snsouch{ 45242475Snsouch#ifdef PERIPH_1284 453184130Sjhb struct ppi_data *ppi = dev->si_drv1; 454184130Sjhb device_t ppidev = ppi->ppi_device; 455185003Sjhb device_t ppbus = device_get_parent(ppidev); 45642475Snsouch int len, error = 0, sent; 457187576Sjhb char *buffer; 45842475Snsouch 45942475Snsouch#if 0 46042475Snsouch int ret; 46142475Snsouch 46242475Snsouch #define ADDRESS MS_PARAM(0, 0, MS_TYP_PTR) 46342475Snsouch #define LENGTH MS_PARAM(0, 1, MS_TYP_INT) 46442475Snsouch 46542475Snsouch struct ppb_microseq msq[] = { 46642475Snsouch { MS_OP_PUT, { MS_UNKNOWN, MS_UNKNOWN, MS_UNKNOWN } }, 46742475Snsouch MS_RET(0) 46842475Snsouch }; 46942475Snsouch 470187576Sjhb buffer = malloc(BUFSIZE, M_DEVBUF, M_WAITOK); 471187576Sjhb ppb_lock(ppbus); 472187576Sjhb 473108470Sschweikh /* negotiate ECP mode */ 47455939Snsouch if (ppb_1284_negociate(ppbus, PPB_ECP, 0)) { 475108470Sschweikh printf("ppiwrite: ECP negotiation failed\n"); 47642475Snsouch } 47742475Snsouch 47842475Snsouch while (!error && (len = min(uio->uio_resid, BUFSIZE))) { 479187576Sjhb ppb_unlock(ppbus); 480187576Sjhb uiomove(buffer, len, uio); 48142475Snsouch 482187576Sjhb ppb_MS_init_msq(msq, 2, ADDRESS, buffer, LENGTH, len); 48342475Snsouch 484187576Sjhb ppb_lock(ppbus); 48555939Snsouch error = ppb_MS_microseq(ppbus, msq, &ret); 48642475Snsouch } 487187576Sjhb#else 488187576Sjhb buffer = malloc(BUFSIZE, M_DEVBUF, M_WAITOK); 489187576Sjhb ppb_lock(ppbus); 49042475Snsouch#endif 49142475Snsouch 49242475Snsouch /* we have to be peripheral to be able to send data, so 49342475Snsouch * wait for the appropriate state 49442475Snsouch */ 49555957Snsouch if (ppb_1284_get_state(ppbus) < PPB_PERIPHERAL_NEGOCIATION) 49655939Snsouch ppb_1284_terminate(ppbus); 49742475Snsouch 49855957Snsouch while (ppb_1284_get_state(ppbus) != PPB_PERIPHERAL_IDLE) { 49942475Snsouch /* XXX should check a variable before sleeping */ 50042475Snsouch#ifdef DEBUG_1284 50142475Snsouch printf("s"); 50242475Snsouch#endif 50342475Snsouch 50455939Snsouch ppi_enable_intr(ppidev); 50542475Snsouch 506108470Sschweikh /* sleep until IEEE1284 negotiation starts */ 507187576Sjhb error = ppb_sleep(ppbus, ppi, PCATCH | PPBPRI, "ppiwrite", 0); 50842475Snsouch 50942475Snsouch switch (error) { 51042475Snsouch case 0: 511108470Sschweikh /* negotiate peripheral side with BYTE mode */ 51255939Snsouch ppb_peripheral_negociate(ppbus, PPB_BYTE, 0); 51342475Snsouch break; 51442475Snsouch case EWOULDBLOCK: 51542475Snsouch break; 51642475Snsouch default: 51742475Snsouch goto error; 51842475Snsouch } 51942475Snsouch } 52042475Snsouch#ifdef DEBUG_1284 52142475Snsouch printf("N"); 52242475Snsouch#endif 52342475Snsouch 524108470Sschweikh /* negotiation done, write bytes to master host */ 52543301Sdillon while ((len = min(uio->uio_resid, BUFSIZE)) != 0) { 526187576Sjhb ppb_unlock(ppbus); 527187576Sjhb uiomove(buffer, len, uio); 528187576Sjhb ppb_lock(ppbus); 52955939Snsouch if ((error = byte_peripheral_write(ppbus, 530187576Sjhb buffer, len, &sent))) 53142475Snsouch goto error; 53242475Snsouch#ifdef DEBUG_1284 53342475Snsouch printf("d"); 53442475Snsouch#endif 53542475Snsouch } 53642475Snsouch 53742475Snsoucherror: 538187576Sjhb ppb_unlock(ppbus); 539187576Sjhb free(buffer, M_DEVBUF); 54042475Snsouch#else /* PERIPH_1284 */ 54142475Snsouch int error = ENODEV; 54242475Snsouch#endif 54342475Snsouch 54442475Snsouch return (error); 54542475Snsouch} 54642475Snsouch 54742475Snsouchstatic int 548130585Sphkppiioctl(struct cdev *dev, u_long cmd, caddr_t data, int flags, struct thread *td) 54928219Smsmith{ 550184130Sjhb struct ppi_data *ppi = dev->si_drv1; 551184130Sjhb device_t ppidev = ppi->ppi_device; 552184164Sjhb device_t ppbus = device_get_parent(ppidev); 55332178Smsmith int error = 0; 55432178Smsmith u_int8_t *val = (u_int8_t *)data; 55532178Smsmith 556187576Sjhb ppb_lock(ppbus); 55732178Smsmith switch (cmd) { 55832178Smsmith 55932178Smsmith case PPIGDATA: /* get data register */ 56055939Snsouch *val = ppb_rdtr(ppbus); 56132178Smsmith break; 56232178Smsmith case PPIGSTATUS: /* get status bits */ 56355939Snsouch *val = ppb_rstr(ppbus); 56432178Smsmith break; 56532178Smsmith case PPIGCTRL: /* get control bits */ 56655939Snsouch *val = ppb_rctr(ppbus); 56732178Smsmith break; 56843433Snsouch case PPIGEPPD: /* get EPP data bits */ 56955939Snsouch *val = ppb_repp_D(ppbus); 57032178Smsmith break; 57132178Smsmith case PPIGECR: /* get ECP bits */ 57255939Snsouch *val = ppb_recr(ppbus); 57332178Smsmith break; 57432178Smsmith case PPIGFIFO: /* read FIFO */ 57555939Snsouch *val = ppb_rfifo(ppbus); 57632178Smsmith break; 57732178Smsmith case PPISDATA: /* set data register */ 57855939Snsouch ppb_wdtr(ppbus, *val); 57932178Smsmith break; 58032178Smsmith case PPISSTATUS: /* set status bits */ 58155939Snsouch ppb_wstr(ppbus, *val); 58232178Smsmith break; 58332178Smsmith case PPISCTRL: /* set control bits */ 58455939Snsouch ppb_wctr(ppbus, *val); 58532178Smsmith break; 58643433Snsouch case PPISEPPD: /* set EPP data bits */ 58755939Snsouch ppb_wepp_D(ppbus, *val); 58832178Smsmith break; 58932178Smsmith case PPISECR: /* set ECP bits */ 59055939Snsouch ppb_wecr(ppbus, *val); 59132178Smsmith break; 59232178Smsmith case PPISFIFO: /* write FIFO */ 59355939Snsouch ppb_wfifo(ppbus, *val); 59432178Smsmith break; 59543433Snsouch case PPIGEPPA: /* get EPP address bits */ 59655939Snsouch *val = ppb_repp_A(ppbus); 59743433Snsouch break; 59843433Snsouch case PPISEPPA: /* set EPP address bits */ 59955939Snsouch ppb_wepp_A(ppbus, *val); 60043433Snsouch break; 60132178Smsmith default: 60232178Smsmith error = ENOTTY; 60332178Smsmith break; 60432178Smsmith } 605187576Sjhb ppb_unlock(ppbus); 606185003Sjhb 60732178Smsmith return (error); 60828219Smsmith} 60928219Smsmith 61056455Speterstatic device_method_t ppi_methods[] = { 61156455Speter /* device interface */ 61256455Speter DEVMETHOD(device_identify, ppi_identify), 61356455Speter DEVMETHOD(device_probe, ppi_probe), 61456455Speter DEVMETHOD(device_attach, ppi_attach), 615187576Sjhb DEVMETHOD(device_detach, ppi_detach), 61656455Speter 61756455Speter { 0, 0 } 61856455Speter}; 61956455Speter 62056455Speterstatic driver_t ppi_driver = { 62156455Speter "ppi", 62256455Speter ppi_methods, 62356455Speter sizeof(struct ppi_data), 62456455Speter}; 62555939SnsouchDRIVER_MODULE(ppi, ppbus, ppi_driver, ppi_devclass, 0, 0); 626153610SruMODULE_DEPEND(ppi, ppbus, 1, 1, 1); 627