1 /* $NetBSD: com_sableio.c,v 1.4 2002/10/02 04:06:39 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 40 41 __KERNEL_RCSID(0, "$NetBSD: com_sableio.c,v 1.4 2002/10/02 04:06:39 thorpej Exp $"); 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/ioctl.h> 46 #include <sys/select.h> 47 #include <sys/tty.h> 48 #include <sys/proc.h> 49 #include <sys/user.h> 50 #include <sys/conf.h> 51 #include <sys/file.h> 52 #include <sys/uio.h> 53 #include <sys/kernel.h> 54 #include <sys/syslog.h> 55 #include <sys/types.h> 56 #include <sys/device.h> 57 58 #include <machine/intr.h> 59 #include <machine/bus.h> 60 61 #include <dev/ic/comreg.h> 62 #include <dev/ic/comvar.h> 63 64 #include <dev/pci/pcivar.h> 65 #include <dev/isa/isavar.h> 66 67 #include <alpha/sableio/sableiovar.h> 68 69 struct com_sableio_softc { 70 struct com_softc sc_com; /* real "com" softc */ 71 72 /* STDIO-specific goo. */ 73 void *sc_ih; /* interrupt handler */ 74 }; 75 76 int com_sableio_match(struct device *, struct cfdata *, void *); 77 void com_sableio_attach(struct device *, struct device *, void *); 78 void com_sableio_cleanup(void *); 79 80 CFATTACH_DECL(com_sableio, sizeof(struct com_sableio_softc), 81 com_sableio_match, com_sableio_attach, NULL, NULL); 82 83 int 84 com_sableio_match(struct device *parent, struct cfdata *match, void *aux) 85 { 86 struct sableio_attach_args *sa = aux; 87 88 /* Always present. */ 89 if (strcmp(sa->sa_name, match->cf_name) == 0) 90 return (1); 91 92 return (0); 93 } 94 95 void 96 com_sableio_attach(struct device *parent, struct device *self, void *aux) 97 { 98 struct com_sableio_softc *ssc = (void *)self; 99 struct com_softc *sc = &ssc->sc_com; 100 struct sableio_attach_args *sa = aux; 101 const char *intrstr; 102 103 sc->sc_iot = sa->sa_iot; 104 sc->sc_iobase = sa->sa_ioaddr; 105 106 if (com_is_console(sc->sc_iot, sc->sc_iobase, &sc->sc_ioh) == 0 && 107 bus_space_map(sc->sc_iot, sc->sc_iobase, COM_NPORTS, 0, 108 &sc->sc_ioh) != 0) { 109 printf(": can't map i/o space\n"); 110 return; 111 } 112 113 sc->sc_frequency = COM_FREQ; 114 115 com_attach_subr(sc); 116 117 intrstr = pci_intr_string(sa->sa_pc, sa->sa_sableirq[0]); 118 ssc->sc_ih = pci_intr_establish(sa->sa_pc, sa->sa_sableirq[0], 119 IPL_SERIAL, comintr, sc); 120 if (ssc->sc_ih == NULL) { 121 printf("%s: unable to establish interrupt", 122 sc->sc_dev.dv_xname); 123 if (intrstr != NULL) 124 printf(" at %s", intrstr); 125 printf("\n"); 126 return; 127 } 128 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 129 130 /* 131 * Shutdown hook for buggy BIOSs that don't recognize the UART 132 * without a disabled FIFO. 133 */ 134 if (shutdownhook_establish(com_sableio_cleanup, sc) == NULL) 135 panic("com_sableio_attach: could not establish shutdown hook"); 136 } 137 138 void 139 com_sableio_cleanup(void *arg) 140 { 141 struct com_softc *sc = arg; 142 143 if (ISSET(sc->sc_hwflags, COM_HW_FIFO)) 144 bus_space_write_1(sc->sc_iot, sc->sc_ioh, com_fifo, 0); 145 } 146