1 /* $OpenBSD: com_puc.c,v 1.22 2014/09/14 14:17:25 jsg Exp $ */ 2 3 /* 4 * Copyright (c) 1997 - 1999, Jason Downs. 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. Neither the name(s) of the author(s) nor the name OpenBSD 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS 19 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, 22 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/ioctl.h> 34 #include <sys/selinfo.h> 35 #include <sys/tty.h> 36 #include <sys/conf.h> 37 #include <sys/file.h> 38 #include <sys/uio.h> 39 #include <sys/kernel.h> 40 #include <sys/syslog.h> 41 #include <sys/device.h> 42 43 #include <machine/intr.h> 44 #include <machine/bus.h> 45 46 #include <dev/pci/pucvar.h> 47 48 #include "com.h" 49 50 #include <dev/ic/comreg.h> 51 #include <dev/ic/comvar.h> 52 #include <dev/ic/ns16550reg.h> 53 54 #define com_lcr com_cfcr 55 56 int com_puc_match(struct device *, void *, void *); 57 void com_puc_attach(struct device *, struct device *, void *); 58 int com_puc_detach(struct device *, int); 59 60 struct cfattach com_puc_ca = { 61 sizeof(struct com_softc), com_puc_match, 62 com_puc_attach, com_puc_detach, com_activate 63 }; 64 65 int 66 com_puc_match(parent, match, aux) 67 struct device *parent; 68 void *match, *aux; 69 { 70 struct puc_attach_args *pa = aux; 71 72 if (PUC_IS_COM(pa->type)) 73 return(1); 74 75 return(0); 76 } 77 78 void 79 com_puc_attach(parent, self, aux) 80 struct device *parent, *self; 81 void *aux; 82 { 83 struct com_softc *sc = (void *)self; 84 struct puc_attach_args *pa = aux; 85 const char *intrstr; 86 87 /* Grab a PCI interrupt. */ 88 intrstr = pa->intr_string(pa); 89 sc->sc_ih = pa->intr_establish(pa, IPL_TTY, comintr, sc, 90 sc->sc_dev.dv_xname); 91 if (sc->sc_ih == NULL) { 92 printf(": couldn't establish interrupt"); 93 if (intrstr != NULL) 94 printf(" at %s", intrstr); 95 printf("\n"); 96 return; 97 } 98 printf(" %s", intrstr); 99 100 sc->sc_iot = pa->t; 101 sc->sc_ioh = pa->h; 102 sc->sc_iobase = pa->a; 103 if (PUC_IS_COM_MUL(pa->type)) 104 sc->sc_frequency = COM_FREQ * PUC_COM_GET_MUL(pa->type); 105 else 106 sc->sc_frequency = COM_FREQ * (1 << PUC_COM_GET_POW2(pa->type)); 107 108 com_attach_subr(sc); 109 } 110 111 int 112 com_puc_detach(struct device *self, int flags) 113 { 114 return com_detach(self, flags); 115 } 116