1 /* $NetBSD: zs_pcctwo.c,v 1.5 2002/02/12 20:38:34 scw Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Gordon W. Ross, Jason R. Thorpe and Steve C. Woodford. 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 /* 40 * Zilog Z8530 Dual UART driver (machine-dependent part) 41 * 42 * Runs two serial lines per chip using slave drivers. 43 * Plain tty/async lines use the zs_async slave. 44 * 45 * Modified for NetBSD/mvme68k by Jason R. Thorpe <thorpej@NetBSD.ORG> 46 * 47 * Modified to attach to the PCCchip2/MCchip backend by Steve Woodford. 48 */ 49 50 #include <sys/param.h> 51 #include <sys/systm.h> 52 #include <sys/proc.h> 53 #include <sys/device.h> 54 #include <sys/conf.h> 55 #include <sys/file.h> 56 #include <sys/ioctl.h> 57 #include <sys/tty.h> 58 #include <sys/time.h> 59 #include <sys/kernel.h> 60 #include <sys/syslog.h> 61 62 #include <dev/cons.h> 63 #include <dev/ic/z8530reg.h> 64 #include <machine/z8530var.h> 65 66 #include <machine/cpu.h> 67 #include <machine/bus.h> 68 69 #include <dev/mvme/pcctworeg.h> 70 #include <dev/mvme/pcctwovar.h> 71 72 #include <mvme68k/dev/mainbus.h> 73 #include <mvme68k/dev/zsvar.h> 74 75 76 /* Definition of the driver for autoconfig. */ 77 static int zsc_pcctwo_match(struct device *, struct cfdata *, void *); 78 static void zsc_pcctwo_attach(struct device *, struct device *, void *); 79 80 struct cfattach zsc_pcctwo_ca = { 81 sizeof(struct zsc_softc), zsc_pcctwo_match, zsc_pcctwo_attach 82 }; 83 84 extern struct cfdriver zsc_cd; 85 86 cons_decl(zsc_pcctwo); 87 88 89 /* 90 * Is the zs chip present? 91 */ 92 static int 93 zsc_pcctwo_match(parent, cf, aux) 94 struct device *parent; 95 struct cfdata *cf; 96 void *aux; 97 { 98 struct pcctwo_attach_args *pa = aux; 99 100 if (strcmp(pa->pa_name, zsc_cd.cd_name) || 101 (machineid != MVME_162 && machineid != MVME_172)) 102 return (0); 103 104 pa->pa_ipl = cf->pcctwocf_ipl; 105 if (pa->pa_ipl == -1) 106 pa->pa_ipl = ZSHARD_PRI; 107 return (1); 108 } 109 110 /* 111 * Attach a found zs. 112 */ 113 static void 114 zsc_pcctwo_attach(parent, self, aux) 115 struct device *parent; 116 struct device *self; 117 void *aux; 118 { 119 struct zsc_softc *zsc = (void *) self; 120 struct pcctwo_attach_args *pa = aux; 121 struct zsdevice zs; 122 bus_space_handle_t bush; 123 int zs_level; 124 static int vector = MCCHIPV_ZS0; 125 126 /* Map the device's registers */ 127 bus_space_map(pa->pa_bust, pa->pa_offset, 8, 0, &bush); 128 129 zs_level = pa->pa_ipl; 130 131 /* XXX: This is a gross hack. I need to bus-space zs.c ... */ 132 zs.zs_chan_b.zc_csr = (volatile u_char *) bush + 1; 133 zs.zs_chan_b.zc_data = (volatile u_char *) bush + 3; 134 zs.zs_chan_a.zc_csr = (volatile u_char *) bush + 5; 135 zs.zs_chan_a.zc_data = (volatile u_char *) bush + 7; 136 137 /* Do common parts of SCC configuration. */ 138 zs_config(zsc, &zs, vector + PCCTWO_VECBASE, PCLK_162); 139 140 evcnt_attach_dynamic(&zsc->zsc_evcnt, EVCNT_TYPE_INTR, 141 pcctwointr_evcnt(zs_level), "rs232", zsc->zsc_dev.dv_xname); 142 143 /* 144 * Now safe to install interrupt handlers. 145 */ 146 pcctwointr_establish(vector++, zshard_unshared, zs_level, zsc, NULL); 147 148 /* 149 * Set master interrupt enable. 150 */ 151 zs_write_reg(zsc->zsc_cs[0], 9, zs_init_reg[9]); 152 } 153 154 /**************************************************************** 155 * Console support functions (MVME PCC specific!) 156 ****************************************************************/ 157 158 /* 159 * Check for SCC console. The MVME-1x2 always uses unit 0 chan 0. 160 */ 161 void 162 zsc_pcctwocnprobe(cp) 163 struct consdev *cp; 164 { 165 if (machineid != MVME_162 && machineid != MVME_172) { 166 cp->cn_pri = CN_DEAD; 167 return; 168 } 169 170 /* Initialize required fields. */ 171 cp->cn_dev = makedev(zs_major, 0); 172 cp->cn_pri = CN_NORMAL; 173 } 174 175 void 176 zsc_pcctwocninit(cp) 177 struct consdev *cp; 178 { 179 bus_space_handle_t bush; 180 struct zsdevice zs; 181 182 bus_space_map(&_mainbus_space_tag, 183 intiobase_phys + MAINBUS_PCCTWO_OFFSET + MCCHIP_ZS0_OFF, 8, 0,&bush); 184 185 /* XXX: This is a gross hack. I need to bus-space zs.c ... */ 186 zs.zs_chan_b.zc_csr = (volatile u_char *) bush + 1; 187 zs.zs_chan_b.zc_data = (volatile u_char *) bush + 3; 188 zs.zs_chan_a.zc_csr = (volatile u_char *) bush + 5; 189 zs.zs_chan_a.zc_data = (volatile u_char *) bush + 7; 190 191 /* Do common parts of console init. */ 192 zs_cnconfig(0, 0, &zs, PCLK_162); 193 } 194