1 /* $NetBSD: com_puc.c,v 1.3 2001/11/13 07:48:41 lukem 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 ns16x50 serial port ('com') driver attachment to 35 * "PCI 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: com_puc.c,v 1.3 2001/11/13 07:48:41 lukem Exp $"); 42 43 #include <sys/types.h> 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/device.h> 47 #include <sys/tty.h> 48 49 #include <machine/bus.h> 50 51 #include <dev/pci/pcivar.h> 52 #include <dev/pci/pucvar.h> 53 #include <dev/ic/comreg.h> 54 #include <dev/ic/comvar.h> 55 56 struct com_puc_softc { 57 struct com_softc sc_com; /* real "com" softc */ 58 59 /* puc-specific goo. */ 60 void *sc_ih; /* interrupt handler */ 61 }; 62 63 int com_puc_probe __P((struct device *, struct cfdata *, void *)); 64 void com_puc_attach __P((struct device *, struct device *, void *)); 65 66 struct cfattach com_puc_ca = { 67 sizeof(struct com_puc_softc), com_puc_probe, com_puc_attach 68 }; 69 70 int 71 com_puc_probe(parent, match, aux) 72 struct device *parent; 73 struct cfdata *match; 74 void *aux; 75 { 76 struct puc_attach_args *aa = aux; 77 78 /* 79 * Locators already matched, just check the type. 80 */ 81 if (aa->type != PUC_PORT_TYPE_COM) 82 return (0); 83 84 return (1); 85 } 86 87 void 88 com_puc_attach(parent, self, aux) 89 struct device *parent, *self; 90 void *aux; 91 { 92 struct com_puc_softc *psc = (void *)self; 93 struct com_softc *sc = &psc->sc_com; 94 struct puc_attach_args *aa = aux; 95 const char *intrstr; 96 97 /* 98 * XXX This driver assumes that 'com' ports attached to 'puc' 99 * XXX can not be console. That isn't unreasonable, because PCI 100 * XXX devices are supposed to be dynamically mapped, and com 101 * XXX console ports want fixed addresses. When/if baseboard 102 * XXX 'com' ports are identified as PCI/communications/serial 103 * XXX devices and are known to be mapped at the standard 104 * XXX addresses, if they can be the system console then we have 105 * XXX to cope with doing the mapping right. Then this will get 106 * XXX really ugly. Of course, by then we might know the real 107 * XXX definition of PCI/communications/serial, and attach 'com' 108 * XXX directly on PCI. 109 */ 110 111 sc->sc_iobase = aa->a; 112 sc->sc_iot = aa->t; 113 sc->sc_ioh = aa->h; 114 sc->sc_frequency = aa->flags & PUC_COM_CLOCKMASK; 115 116 intrstr = pci_intr_string(aa->pc, aa->intrhandle); 117 psc->sc_ih = pci_intr_establish(aa->pc, aa->intrhandle, IPL_SERIAL, 118 comintr, sc); 119 if (psc->sc_ih == NULL) { 120 printf(": couldn't establish interrupt"); 121 if (intrstr != NULL) 122 printf(" at %s", intrstr); 123 printf("\n"); 124 return; 125 } 126 printf(": interrupting at %s\n", intrstr); 127 printf("%s", sc->sc_dev.dv_xname); 128 129 com_attach_subr(sc); 130 } 131