1 /* $NetBSD: zs_pcctwo.c,v 1.11 2005/12/11 12:18:17 christos 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/cdefs.h> 51 __KERNEL_RCSID(0, "$NetBSD: zs_pcctwo.c,v 1.11 2005/12/11 12:18:17 christos Exp $"); 52 53 #include <sys/param.h> 54 #include <sys/systm.h> 55 #include <sys/proc.h> 56 #include <sys/device.h> 57 #include <sys/conf.h> 58 #include <sys/file.h> 59 #include <sys/ioctl.h> 60 #include <sys/tty.h> 61 #include <sys/time.h> 62 #include <sys/kernel.h> 63 #include <sys/syslog.h> 64 65 #include <dev/cons.h> 66 #include <dev/ic/z8530reg.h> 67 #include <machine/z8530var.h> 68 69 #include <machine/cpu.h> 70 #include <machine/bus.h> 71 72 #include <dev/mvme/pcctworeg.h> 73 #include <dev/mvme/pcctwovar.h> 74 75 #include <mvme68k/dev/mainbus.h> 76 #include <mvme68k/dev/zsvar.h> 77 78 79 /* Definition of the driver for autoconfig. */ 80 static int zsc_pcctwo_match(struct device *, struct cfdata *, void *); 81 static void zsc_pcctwo_attach(struct device *, struct device *, void *); 82 83 CFATTACH_DECL(zsc_pcctwo, sizeof(struct zsc_softc), 84 zsc_pcctwo_match, zsc_pcctwo_attach, NULL, NULL); 85 86 extern struct cfdriver zsc_cd; 87 88 cons_decl(zsc_pcctwo); 89 90 91 /* 92 * Is the zs chip present? 93 */ 94 static int 95 zsc_pcctwo_match(parent, cf, aux) 96 struct device *parent; 97 struct cfdata *cf; 98 void *aux; 99 { 100 struct pcctwo_attach_args *pa = aux; 101 102 if (strcmp(pa->pa_name, zsc_cd.cd_name) || 103 (machineid != MVME_162 && machineid != MVME_172)) 104 return (0); 105 106 pa->pa_ipl = cf->pcctwocf_ipl; 107 if (pa->pa_ipl == -1) 108 pa->pa_ipl = ZSHARD_PRI; 109 return (1); 110 } 111 112 /* 113 * Attach a found zs. 114 */ 115 static void 116 zsc_pcctwo_attach(parent, self, aux) 117 struct device *parent; 118 struct device *self; 119 void *aux; 120 { 121 struct zsc_softc *zsc = (void *) self; 122 struct pcctwo_attach_args *pa = aux; 123 struct zsdevice zs; 124 bus_space_handle_t bush; 125 int zs_level; 126 static int vector = MCCHIPV_ZS0; 127 128 /* Map the device's registers */ 129 bus_space_map(pa->pa_bust, pa->pa_offset, 8, 0, &bush); 130 131 zs_level = pa->pa_ipl; 132 133 /* XXX: This is a gross hack. I need to bus-space zs.c ... */ 134 zs.zs_chan_b.zc_csr = (volatile u_char *) bush + 1; 135 zs.zs_chan_b.zc_data = (volatile u_char *) bush + 3; 136 zs.zs_chan_a.zc_csr = (volatile u_char *) bush + 5; 137 zs.zs_chan_a.zc_data = (volatile u_char *) bush + 7; 138 139 /* Do common parts of SCC configuration. */ 140 zs_config(zsc, &zs, vector + PCCTWO_VECBASE, PCLK_162); 141 142 evcnt_attach_dynamic(&zsc->zsc_evcnt, EVCNT_TYPE_INTR, 143 pcctwointr_evcnt(zs_level), "rs232", zsc->zsc_dev.dv_xname); 144 145 /* 146 * Now safe to install interrupt handlers. 147 */ 148 pcctwointr_establish(vector++, zshard_unshared, zs_level, zsc, NULL); 149 150 /* 151 * Set master interrupt enable. 152 */ 153 zs_write_reg(zsc->zsc_cs[0], 9, zs_init_reg[9]); 154 } 155 156 /**************************************************************** 157 * Console support functions (MVME PCC specific!) 158 ****************************************************************/ 159 160 /* 161 * Check for SCC console. The MVME-1x2 always uses unit 0 chan 0. 162 */ 163 void 164 zsc_pcctwocnprobe(cp) 165 struct consdev *cp; 166 { 167 extern const struct cdevsw zstty_cdevsw; 168 169 if (machineid != MVME_162 && machineid != MVME_172) { 170 cp->cn_pri = CN_DEAD; 171 return; 172 } 173 174 /* Initialize required fields. */ 175 cp->cn_dev = makedev(cdevsw_lookup_major(&zstty_cdevsw), 0); 176 cp->cn_pri = CN_NORMAL; 177 } 178 179 void 180 zsc_pcctwocninit(cp) 181 struct consdev *cp; 182 { 183 bus_space_handle_t bush; 184 struct zsdevice zs; 185 186 bus_space_map(&_mainbus_space_tag, 187 intiobase_phys + MAINBUS_PCCTWO_OFFSET + MCCHIP_ZS0_OFF, 8, 0,&bush); 188 189 /* XXX: This is a gross hack. I need to bus-space zs.c ... */ 190 zs.zs_chan_b.zc_csr = (volatile u_char *) bush + 1; 191 zs.zs_chan_b.zc_data = (volatile u_char *) bush + 3; 192 zs.zs_chan_a.zc_csr = (volatile u_char *) bush + 5; 193 zs.zs_chan_a.zc_data = (volatile u_char *) bush + 7; 194 195 /* Do common parts of console init. */ 196 zs_cnconfig(0, 0, &zs, PCLK_162); 197 } 198