1/* $NetBSD: gemini_com.c,v 1.4 2018/12/08 17:46:09 thorpej Exp $ */ 2 3/* adapted from: 4 * NetBSD: omap_com.c,v 1.2 2008/03/14 15:09:09 cube Exp 5 */ 6 7/* 8 * Based on arch/arm/xscale/pxa2x0_com.c 9 * 10 * Copyright 2003 Wasabi Systems, Inc. 11 * All rights reserved. 12 * 13 * Written by Steve C. Woodford for Wasabi Systems, Inc. 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * 1. Redistributions of source code must retain the above copyright 19 * notice, this list of conditions and the following disclaimer. 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in the 22 * documentation and/or other materials provided with the distribution. 23 * 3. All advertising materials mentioning features or use of this software 24 * must display the following acknowledgement: 25 * This product includes software developed for the NetBSD Project by 26 * Wasabi Systems, Inc. 27 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 28 * or promote products derived from this software without specific prior 29 * written permission. 30 * 31 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 32 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 33 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 34 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 35 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 36 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 37 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 38 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 39 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 40 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 * POSSIBILITY OF SUCH DAMAGE. 42 */ 43 44#include <sys/cdefs.h> 45__KERNEL_RCSID(0, "$NetBSD: gemini_com.c,v 1.4 2018/12/08 17:46:09 thorpej Exp $"); 46 47#include "opt_com.h" 48 49#include <sys/param.h> 50#include <sys/systm.h> 51#include <sys/device.h> 52#include <sys/termios.h> 53 54#include <machine/intr.h> 55#include <sys/bus.h> 56 57#include <arm/pic/picvar.h> 58 59#include <dev/ic/comreg.h> 60#include <dev/ic/comvar.h> 61 62#include <arm/gemini/gemini_reg.h> 63#include <arm/gemini/gemini_obiovar.h> 64 65#include <arm/gemini/gemini_com.h> 66 67#include "locators.h" 68 69static int gemini_com_match(device_t, cfdata_t , void *); 70static void gemini_com_attach(device_t, device_t, void *); 71 72CFATTACH_DECL_NEW(gemini_com, sizeof(struct com_softc), 73 gemini_com_match, gemini_com_attach, NULL, NULL); 74 75static int 76gemini_com_match(device_t parent, cfdata_t cf, void *aux) 77{ 78 struct obio_attach_args *obio = aux; 79 bus_space_handle_t bh; 80 int rv; 81 82 if (obio->obio_addr == -1 || obio->obio_intr == -1) 83 panic("gemini_com must have addr and intr specified in config."); 84 85 if (obio->obio_size == 0) 86 obio->obio_size = GEMINI_UART_SIZE; 87 88 if (com_is_console(obio->obio_iot, obio->obio_addr, NULL)) 89 return (1); 90 91 if (bus_space_map(obio->obio_iot, obio->obio_addr, obio->obio_size, 92 0, &bh)) 93 return (0); 94 95 rv = comprobe1(obio->obio_iot, bh); 96 97 bus_space_unmap(obio->obio_iot, bh, obio->obio_size); 98 99 return (rv); 100} 101 102static void 103gemini_com_attach(device_t parent, device_t self, void *aux) 104{ 105 struct com_softc *sc = device_private(self); 106 struct obio_attach_args *obio = aux; 107 bus_space_tag_t iot; 108 bus_space_handle_t ioh; 109 bus_addr_t iobase; 110 111 sc->sc_dev = self; 112 iot = obio->obio_iot; 113 iobase = obio->obio_addr; 114 sc->sc_frequency = GEMINI_COM_FREQ; 115 sc->sc_type = COM_TYPE_16550_NOERS; 116 117 if (com_is_console(iot, iobase, &ioh) == 0 && 118 bus_space_map(iot, iobase, obio->obio_size, 0, &ioh)) { 119 panic(": can't map registers\n"); 120 return; 121 } 122 com_init_regs(&sc->sc_regs, iot, ioh, iobase); 123 124 com_attach_subr(sc); 125 aprint_naive("\n"); 126 127 intr_establish(obio->obio_intr, IPL_SERIAL, IST_LEVEL_HIGH, 128 comintr, sc); 129} 130