1/*- 2 * Copyright (c) 2012 The NetBSD Foundation, Inc. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to The NetBSD Foundation 6 * by Paul Fleischer <paul@xpg.dk> 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30/* Derived from sscom_s3c2410.c */ 31 32/* 33 * Copyright (c) 2002, 2003 Fujitsu Component Limited 34 * Copyright (c) 2002, 2003 Genetec Corporation 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. Neither the name of The Fujitsu Component Limited nor the name of 46 * Genetec corporation may not be used to endorse or promote products 47 * derived from this software without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY FUJITSU COMPONENT LIMITED AND GENETEC 50 * CORPORATION ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 51 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 52 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 53 * DISCLAIMED. IN NO EVENT SHALL FUJITSU COMPONENT LIMITED OR GENETEC 54 * CORPORATION BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 57 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 58 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 59 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 60 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 */ 63 64#include <sys/cdefs.h> 65__KERNEL_RCSID(0, "$NetBSD: sscom_s3c2440.c,v 1.3 2012/10/27 17:17:40 chs Exp $"); 66 67#include "opt_sscom.h" 68#include "opt_ddb.h" 69#include "opt_kgdb.h" 70 71#include <sys/param.h> 72#include <sys/systm.h> 73#include <sys/device.h> 74 75#include <sys/bus.h> 76#include <machine/intr.h> 77 78#include <arm/s3c2xx0/s3c2440reg.h> 79#include <arm/s3c2xx0/s3c2440var.h> 80#include <arm/s3c2xx0/sscom_var.h> 81 82#include "locators.h" 83 84static int sscom_match(device_t, cfdata_t, void *); 85static void sscom_attach(device_t, device_t, void *); 86 87CFATTACH_DECL_NEW(sscom, sizeof(struct sscom_softc), sscom_match, 88 sscom_attach, NULL, NULL); 89 90const static struct sscom_uart_info s3c2440_uart_config[] = { 91 /* UART 0 */ 92 { 93 0, 94 S3C2440_INT_TXD0, 95 S3C2440_INT_RXD0, 96 S3C2440_INT_ERR0, 97 S3C2440_UART_BASE(0), 98 }, 99 /* UART 1 */ 100 { 101 1, 102 S3C2440_INT_TXD1, 103 S3C2440_INT_RXD1, 104 S3C2440_INT_ERR1, 105 S3C2440_UART_BASE(1), 106 }, 107 /* UART 2 */ 108 { 109 2, 110 S3C2440_INT_TXD2, 111 S3C2440_INT_RXD2, 112 S3C2440_INT_ERR2, 113 S3C2440_UART_BASE(2), 114 }, 115}; 116static int found; 117 118static int 119sscom_match(device_t parent, struct cfdata *cf, void *aux) 120{ 121 struct s3c2xx0_attach_args *sa = aux; 122 int unit = sa->sa_index; 123 124 if (unit == SSIOCF_INDEX_DEFAULT && found == 0) 125 return 1; 126 return (unit == 0 || unit == 1 || unit == 2); 127} 128 129#define _sscom_intbit(irqno) (1<<((irqno)-S3C2440_SUBIRQ_MIN)) 130 131static void 132s3c2440_change_txrx_interrupts(struct sscom_softc *sc, bool unmask_p, 133 u_int flags) 134{ 135 int intrbits = 0; 136 if (flags & SSCOM_HW_RXINT) 137 intrbits |= _sscom_intbit((sc)->sc_rx_irqno); 138 if (flags & SSCOM_HW_TXINT) 139 intrbits |= _sscom_intbit((sc)->sc_tx_irqno); 140 if (unmask_p) { 141 s3c2440_unmask_subinterrupts(intrbits); 142 } else { 143 s3c2440_mask_subinterrupts(intrbits); 144 } 145} 146 147static void 148sscom_attach(device_t parent, device_t self, void *aux) 149{ 150 struct sscom_softc *sc = device_private(self); 151 struct s3c2xx0_attach_args *sa = aux; 152 int unit; 153 bus_addr_t iobase; 154 155 found = 1; 156 unit = (sa->sa_index == SSIOCF_INDEX_DEFAULT) ? 0 : sa->sa_index; 157 iobase = s3c2440_uart_config[unit].iobase; 158 159 sc->sc_dev = self; 160 sc->sc_iot = s3c2xx0_softc->sc_iot; 161 sc->sc_unit = unit; 162 sc->sc_frequency = s3c2xx0_softc->sc_pclk; 163 164 sc->sc_change_txrx_interrupts = s3c2440_change_txrx_interrupts; 165 166 sc->sc_rx_irqno = s3c2440_uart_config[unit].rx_int; 167 sc->sc_tx_irqno = s3c2440_uart_config[unit].tx_int; 168 169 if (bus_space_map(sc->sc_iot, iobase, SSCOM_SIZE, 0, &sc->sc_ioh)) { 170 printf( ": failed to map registers\n" ); 171 return; 172 } 173 174 printf("\n"); 175 176 s3c24x0_intr_establish(s3c2440_uart_config[unit].tx_int, 177 IPL_SERIAL, IST_LEVEL, sscomtxintr, sc); 178 s3c24x0_intr_establish(s3c2440_uart_config[unit].rx_int, 179 IPL_SERIAL, IST_LEVEL, sscomrxintr, sc); 180 s3c24x0_intr_establish(s3c2440_uart_config[unit].err_int, 181 IPL_SERIAL, IST_LEVEL, sscomrxintr, sc); 182 sscom_disable_txrxint(sc); 183 184 sscom_attach_subr(sc); 185} 186 187int 188s3c2440_sscom_cnattach(bus_space_tag_t iot, int unit, int rate, 189 int frequency, tcflag_t cflag) 190{ 191#if defined(SSCOM0CONSOLE) || defined(SSCOM1CONSOLE) 192 return sscom_cnattach(iot, s3c2440_uart_config + unit, 193 rate, frequency, cflag); 194#else 195 return 0; 196#endif 197} 198 199#ifdef KGDB 200int 201s3c2440_sscom_kgdb_attach(bus_space_tag_t iot, int unit, int rate, 202 int frequency, tcflag_t cflag) 203{ 204 return sscom_kgdb_attach(iot, s3c2440_uart_config + unit, 205 rate, frequency, cflag); 206} 207#endif /* KGDB */ 208