1/* $NetBSD: lpt_puc.c,v 1.19 2018/11/30 16:26:59 jmcneill Exp $ */ 2 3/* 4 * Copyright (c) 1998 Christopher G. Demetriou. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Christopher G. Demetriou 17 * for the NetBSD Project. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33/* 34 * Machine-independent parallel port ('lpt') driver attachment to "PCI 35 * Universal Communications" controller driver. 36 * 37 * Author: Christopher G. Demetriou, May 17, 1998. 38 */ 39 40#include <sys/cdefs.h> 41__KERNEL_RCSID(0, "$NetBSD: lpt_puc.c,v 1.19 2018/11/30 16:26:59 jmcneill Exp $"); 42 43#include <sys/param.h> 44#include <sys/systm.h> 45#include <sys/device.h> 46 47#include <sys/bus.h> 48 49#include <dev/pci/pcivar.h> 50#include <dev/pci/pucvar.h> 51#include <dev/ic/lptvar.h> 52 53static int 54lpt_puc_probe(device_t parent, cfdata_t match, void *aux) 55{ 56 struct puc_attach_args *aa = aux; 57 58 /* 59 * Locators already matched, just check the type. 60 */ 61 if (aa->type != PUC_PORT_TYPE_LPT) 62 return (0); 63 64 return (1); 65} 66 67static void 68lpt_puc_attach(device_t parent, device_t self, void *aux) 69{ 70 struct lpt_softc *sc = device_private(self); 71 struct puc_attach_args *aa = aux; 72 const char *intrstr; 73 char intrbuf[PCI_INTRSTR_LEN]; 74 75 sc->sc_dev = self; 76 sc->sc_iot = aa->t; 77 sc->sc_ioh = aa->h; 78 79 if (aa->poll) { 80 aprint_error(": polling not supported\n"); 81 return; 82 } 83 84 aprint_naive(": Parallel port"); 85 aprint_normal(": "); 86 87 intrstr = pci_intr_string(aa->pc, aa->intrhandle, intrbuf, 88 sizeof(intrbuf)); 89 sc->sc_ih = pci_intr_establish_xname(aa->pc, aa->intrhandle, IPL_TTY, 90 lptintr, sc, device_xname(self)); 91 if (sc->sc_ih == NULL) { 92 aprint_error("couldn't establish interrupt"); 93 if (intrstr != NULL) 94 aprint_error(" at %s", intrstr); 95 aprint_error("\n"); 96 return; 97 } 98 99#if defined(amd64) || defined(i386) 100 /* 101 * Parallel ports are sometimes used for improvised GPIO by 102 * userspace programs which need to know the port's I/O address. 103 * Print the address here so the user doesn't have to dig through 104 * PCI configuration space to find it. 105 */ 106 if (aa->h < 0x10000) 107 aprint_normal("ioaddr 0x%04lx, ", aa->h); 108#endif 109 aprint_normal("interrupting at %s\n", intrstr); 110 111 if (!pmf_device_register(self, NULL, NULL)) 112 aprint_error_dev(self, "couldn't establish power handler\n"); 113 114 lpt_attach_subr(sc); 115} 116 117CFATTACH_DECL_NEW(lpt_puc, sizeof(struct lpt_softc), 118 lpt_puc_probe, lpt_puc_attach, NULL, NULL); 119