1 /* $NetBSD: zs_pcctwo.c,v 1.14 2008/04/28 20:23:29 martin 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 1.14 2008/04/28 20:23:29 martin Exp $"); 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/proc.h> 49 #include <sys/device.h> 50 #include <sys/conf.h> 51 #include <sys/file.h> 52 #include <sys/ioctl.h> 53 #include <sys/tty.h> 54 #include <sys/time.h> 55 #include <sys/kernel.h> 56 #include <sys/syslog.h> 57 58 #include <dev/cons.h> 59 #include <dev/ic/z8530reg.h> 60 #include <machine/z8530var.h> 61 62 #include <machine/cpu.h> 63 #include <machine/bus.h> 64 65 #include <dev/mvme/pcctworeg.h> 66 #include <dev/mvme/pcctwovar.h> 67 68 #include <mvme68k/dev/mainbus.h> 69 #include <mvme68k/dev/zsvar.h> 70 71 #include "ioconf.h" 72 73 /* Definition of the driver for autoconfig. */ 74 static int zsc_pcctwo_match(device_t, cfdata_t, void *); 75 static void zsc_pcctwo_attach(device_t, device_t, void *); 76 77 CFATTACH_DECL_NEW(zsc_pcctwo, sizeof(struct zsc_softc), 78 zsc_pcctwo_match, zsc_pcctwo_attach, NULL, NULL); 79 80 cons_decl(zsc_pcctwo); 81 82 83 /* 84 * Is the zs chip present? 85 */ 86 static int 87 zsc_pcctwo_match(device_t parent, cfdata_t cf, void *aux) 88 { 89 struct pcctwo_attach_args *pa = aux; 90 91 if (strcmp(pa->pa_name, zsc_cd.cd_name) || 92 (machineid != MVME_162 && machineid != MVME_172)) 93 return 0; 94 95 pa->pa_ipl = cf->pcctwocf_ipl; 96 if (pa->pa_ipl == -1) 97 pa->pa_ipl = ZSHARD_PRI; 98 return 1; 99 } 100 101 /* 102 * Attach a found zs. 103 */ 104 static void 105 zsc_pcctwo_attach(device_t parent, device_t self, void *aux) 106 { 107 struct zsc_softc *zsc = device_private(self); 108 struct pcctwo_attach_args *pa = aux; 109 struct zsdevice zs; 110 bus_space_handle_t bush; 111 int zs_level; 112 static int vector = MCCHIPV_ZS0; 113 114 zsc->zsc_dev = self; 115 116 /* Map the device's registers */ 117 bus_space_map(pa->pa_bust, pa->pa_offset, 8, 0, &bush); 118 119 zs_level = pa->pa_ipl; 120 121 /* XXX: This is a gross hack. I need to bus-space zs.c ... */ 122 zs.zs_chan_b.zc_csr = (volatile uint8_t *)bush + 1; 123 zs.zs_chan_b.zc_data = (volatile uint8_t *)bush + 3; 124 zs.zs_chan_a.zc_csr = (volatile uint8_t *)bush + 5; 125 zs.zs_chan_a.zc_data = (volatile uint8_t *)bush + 7; 126 127 /* Do common parts of SCC configuration. */ 128 zs_config(zsc, &zs, vector + PCCTWO_VECBASE, PCLK_162); 129 130 evcnt_attach_dynamic(&zsc->zsc_evcnt, EVCNT_TYPE_INTR, 131 pcctwointr_evcnt(zs_level), "rs232", device_xname(zsc->zsc_dev)); 132 133 /* 134 * Now safe to install interrupt handlers. 135 */ 136 pcctwointr_establish(vector++, zshard_unshared, zs_level, zsc, NULL); 137 138 /* 139 * Set master interrupt enable. 140 */ 141 zs_write_reg(zsc->zsc_cs[0], 9, zs_init_reg[9]); 142 } 143 144 /**************************************************************** 145 * Console support functions (MVME PCC specific!) 146 ****************************************************************/ 147 148 /* 149 * Check for SCC console. The MVME-1x2 always uses unit 0 chan 0. 150 */ 151 void 152 zsc_pcctwocnprobe(struct consdev *cp) 153 { 154 extern const struct cdevsw zstty_cdevsw; 155 156 if (machineid != MVME_162 && machineid != MVME_172) { 157 cp->cn_pri = CN_DEAD; 158 return; 159 } 160 161 /* Initialize required fields. */ 162 cp->cn_dev = makedev(cdevsw_lookup_major(&zstty_cdevsw), 0); 163 cp->cn_pri = CN_NORMAL; 164 } 165 166 void 167 zsc_pcctwocninit(struct consdev *cp) 168 { 169 bus_space_handle_t bush; 170 struct zsdevice zs; 171 172 bus_space_map(&_mainbus_space_tag, 173 intiobase_phys + MAINBUS_PCCTWO_OFFSET + MCCHIP_ZS0_OFF, 8, 0, 174 &bush); 175 176 /* XXX: This is a gross hack. I need to bus-space zs.c ... */ 177 zs.zs_chan_b.zc_csr = (volatile uint8_t *)bush + 1; 178 zs.zs_chan_b.zc_data = (volatile uint8_t *)bush + 3; 179 zs.zs_chan_a.zc_csr = (volatile uint8_t *)bush + 5; 180 zs.zs_chan_a.zc_data = (volatile uint8_t *)bush + 7; 181 182 /* Do common parts of console init. */ 183 zs_cnconfig(0, 0, &zs, PCLK_162); 184 } 185
Indexes created Sat Sep 20 22:09:52 GMT 2025