1 /* $NetBSD: zs_pcctwo.c,v 1.15 2026/04/26 18:02:57 thorpej 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Zilog Z8530 Dual UART driver (machine-dependent part) 34 * 35 * Runs two serial lines per chip using slave drivers. 36 * Plain tty/async lines use the zs_async slave. 37 * 38 * Modified for NetBSD/mvme68k by Jason R. Thorpe <thorpej (at) NetBSD.org> 39 * 40 * Modified to attach to the PCCchip2/MCchip backend by Steve Woodford. 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: zs_pcctwo.c,v 1.15 2026/04/26 18:02:57 thorpej Exp $"); 45 46 #define _M68K_BUS_SPACE_PRIVATE 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/proc.h> 51 #include <sys/device.h> 52 #include <sys/conf.h> 53 #include <sys/file.h> 54 #include <sys/ioctl.h> 55 #include <sys/tty.h> 56 #include <sys/time.h> 57 #include <sys/kernel.h> 58 #include <sys/syslog.h> 59 60 #include <dev/cons.h> 61 #include <dev/ic/z8530reg.h> 62 #include <machine/z8530var.h> 63 64 #include <machine/cpu.h> 65 #include <machine/bus.h> 66 67 #include <dev/mvme/pcctworeg.h> 68 #include <dev/mvme/pcctwovar.h> 69 70 #include <mvme68k/dev/mainbus.h> 71 #include <mvme68k/dev/zsvar.h> 72 73 #include "ioconf.h" 74 75 /* Definition of the driver for autoconfig. */ 76 static int zsc_pcctwo_match(device_t, cfdata_t, void *); 77 static void zsc_pcctwo_attach(device_t, device_t, void *); 78 79 CFATTACH_DECL_NEW(zsc_pcctwo, sizeof(struct zsc_softc), 80 zsc_pcctwo_match, zsc_pcctwo_attach, NULL, NULL); 81 82 cons_decl(zsc_pcctwo); 83 84 85 /* 86 * Is the zs chip present? 87 */ 88 static int 89 zsc_pcctwo_match(device_t parent, cfdata_t cf, void *aux) 90 { 91 struct pcctwo_attach_args *pa = aux; 92 93 if (strcmp(pa->pa_name, zsc_cd.cd_name) || 94 (machineid != MVME_162 && machineid != MVME_172)) 95 return 0; 96 97 pa->pa_ipl = cf->pcctwocf_ipl; 98 if (pa->pa_ipl == -1) 99 pa->pa_ipl = ZSHARD_PRI; 100 return 1; 101 } 102 103 /* 104 * Attach a found zs. 105 */ 106 static void 107 zsc_pcctwo_attach(device_t parent, device_t self, void *aux) 108 { 109 struct zsc_softc *zsc = device_private(self); 110 struct pcctwo_attach_args *pa = aux; 111 struct zsdevice zs; 112 bus_space_handle_t bush; 113 int zs_level; 114 static int vector = MCCHIPV_ZS0; 115 116 zsc->zsc_dev = self; 117 118 /* Map the device's registers */ 119 bus_space_map(pa->pa_bust, pa->pa_offset, 8, 0, &bush); 120 121 zs_level = pa->pa_ipl; 122 123 /* XXX: This is a gross hack. I need to bus-space zs.c ... */ 124 zs.zs_chan_b.zc_csr = (volatile uint8_t *)bush + 1; 125 zs.zs_chan_b.zc_data = (volatile uint8_t *)bush + 3; 126 zs.zs_chan_a.zc_csr = (volatile uint8_t *)bush + 5; 127 zs.zs_chan_a.zc_data = (volatile uint8_t *)bush + 7; 128 129 /* Do common parts of SCC configuration. */ 130 zs_config(zsc, &zs, vector + PCCTWO_VECBASE, PCLK_162); 131 132 evcnt_attach_dynamic(&zsc->zsc_evcnt, EVCNT_TYPE_INTR, 133 pcctwointr_evcnt(zs_level), "rs232", device_xname(zsc->zsc_dev)); 134 135 /* 136 * Now safe to install interrupt handlers. 137 */ 138 pcctwointr_establish(vector++, zshard_unshared, zs_level, zsc, NULL); 139 140 /* 141 * Set master interrupt enable. 142 */ 143 zs_write_reg(zsc->zsc_cs[0], 9, zs_init_reg[9]); 144 } 145 146 /**************************************************************** 147 * Console support functions (MVME PCC specific!) 148 ****************************************************************/ 149 150 /* 151 * Check for SCC console. The MVME-1x2 always uses unit 0 chan 0. 152 */ 153 void 154 zsc_pcctwocnprobe(struct consdev *cp) 155 { 156 extern const struct cdevsw zstty_cdevsw; 157 158 if (machineid != MVME_162 && machineid != MVME_172) { 159 cp->cn_pri = CN_DEAD; 160 return; 161 } 162 163 /* Initialize required fields. */ 164 cp->cn_dev = makedev(cdevsw_lookup_major(&zstty_cdevsw), 0); 165 cp->cn_pri = CN_NORMAL; 166 } 167 168 void 169 zsc_pcctwocninit(struct consdev *cp) 170 { 171 bus_space_handle_t bush; 172 struct zsdevice zs; 173 174 bus_space_map(&m68k_simple_bus_space, 175 intiobase_phys + MAINBUS_PCCTWO_OFFSET + MCCHIP_ZS0_OFF, 8, 0, 176 &bush); 177 178 /* XXX: This is a gross hack. I need to bus-space zs.c ... */ 179 zs.zs_chan_b.zc_csr = (volatile uint8_t *)bush + 1; 180 zs.zs_chan_b.zc_data = (volatile uint8_t *)bush + 3; 181 zs.zs_chan_a.zc_csr = (volatile uint8_t *)bush + 5; 182 zs.zs_chan_a.zc_data = (volatile uint8_t *)bush + 7; 183 184 /* Do common parts of console init. */ 185 zs_cnconfig(0, 0, &zs, PCLK_162); 186 } 187
Indexes created Sun Oct 25 00:26:45 UTC 2026