1/* $NetBSD: ixp425_com.c,v 1.19 2018/12/08 17:46:10 thorpej Exp $ */ 2 3/* 4 * Copyright 2003 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Steve C. Woodford for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38#include <sys/cdefs.h> 39__KERNEL_RCSID(0, "$NetBSD: ixp425_com.c,v 1.19 2018/12/08 17:46:10 thorpej Exp $"); 40 41#include "opt_com.h" 42#ifndef COM_PXA2X0 43#error "You must use options COM_PXA2X0 to get IXP425 serial port support" 44#endif 45 46#include <sys/systm.h> 47#include <sys/param.h> 48#include <sys/device.h> 49#include <sys/termios.h> 50 51#include <machine/intr.h> 52#include <sys/bus.h> 53 54#include <dev/ic/comreg.h> 55#include <dev/ic/comvar.h> 56 57#include <arm/xscale/ixp425reg.h> 58#include <arm/xscale/ixp425var.h> 59#include <arm/xscale/ixp425_sipvar.h> 60 61static int ixsipcom_match(device_t, cfdata_t , void *); 62static void ixsipcom_attach(device_t, device_t, void *); 63 64CFATTACH_DECL_NEW(ixsipcom, sizeof(struct com_softc), 65 ixsipcom_match, ixsipcom_attach, NULL, NULL); 66 67static const int uart_irq[] = {IXP425_INT_UART0, IXP425_INT_UART1}; 68 69static int 70ixsipcom_match(device_t parent, cfdata_t match, void *aux) 71{ 72 struct ixpsip_attach_args *sa = aux; 73 bus_space_tag_t bt = &ixp425_a4x_bs_tag; 74 bus_space_handle_t bh; 75 int rv; 76 77 if (strcmp(match->cf_name, "ixsipcom") == 0) 78 return 1; 79 80 if (com_is_console(bt, sa->sa_addr, NULL)) 81 return (1); 82 83 if (bus_space_map(bt, sa->sa_addr, sa->sa_size, 0, &bh)) 84 return (0); 85 86 /* Make sure the UART is enabled */ 87 bus_space_write_1(bt, bh, com_ier, IER_EUART); 88 89 rv = comprobe1(bt, bh); 90 bus_space_unmap(bt, bh, sa->sa_size); 91 92 return (rv); 93} 94 95static void 96ixsipcom_attach(device_t parent, device_t self, void *aux) 97{ 98 struct com_softc *sc = device_private(self); 99 struct ixpsip_attach_args *sa = aux; 100 bus_space_tag_t iot; 101 bus_space_handle_t ioh; 102 bus_addr_t iobase; 103 104 sc->sc_dev = self; 105 iot = &ixp425_a4x_bs_tag; 106 iobase = sa->sa_addr; 107 sc->sc_frequency = IXP425_UART_FREQ; 108 sc->sc_type = COM_TYPE_PXA2x0; 109 110 if (com_is_console(iot, iobase, &ioh) == 0 && 111 bus_space_map(iot, iobase, sa->sa_size, 0, &ioh)) { 112 aprint_error(": can't map registers\n"); 113 return; 114 } 115 com_init_regs(&sc->sc_regs, iot, ioh, iobase); 116 117 com_attach_subr(sc); 118 119 ixp425_intr_establish(uart_irq[sa->sa_index], IPL_SERIAL, comintr, sc); 120} 121