hd64461uart.c revision 1.2.2.2
1 1.2.2.2 bouyer /* $NetBSD: hd64461uart.c,v 1.2.2.2 2001/03/27 15:30:58 bouyer Exp $ */ 2 1.2.2.2 bouyer 3 1.2.2.2 bouyer /*- 4 1.2.2.2 bouyer * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 1.2.2.2 bouyer * All rights reserved. 6 1.2.2.2 bouyer * 7 1.2.2.2 bouyer * Redistribution and use in source and binary forms, with or without 8 1.2.2.2 bouyer * modification, are permitted provided that the following conditions 9 1.2.2.2 bouyer * are met: 10 1.2.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 11 1.2.2.2 bouyer * notice, this list of conditions and the following disclaimer. 12 1.2.2.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 13 1.2.2.2 bouyer * notice, this list of conditions and the following disclaimer in the 14 1.2.2.2 bouyer * documentation and/or other materials provided with the distribution. 15 1.2.2.2 bouyer * 3. All advertising materials mentioning features or use of this software 16 1.2.2.2 bouyer * must display the following acknowledgement: 17 1.2.2.2 bouyer * This product includes software developed by the NetBSD 18 1.2.2.2 bouyer * Foundation, Inc. and its contributors. 19 1.2.2.2 bouyer * 4. Neither the name of The NetBSD Foundation nor the names of its 20 1.2.2.2 bouyer * contributors may be used to endorse or promote products derived 21 1.2.2.2 bouyer * from this software without specific prior written permission. 22 1.2.2.2 bouyer * 23 1.2.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 1.2.2.2 bouyer * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 1.2.2.2 bouyer * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 1.2.2.2 bouyer * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27 1.2.2.2 bouyer * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 1.2.2.2 bouyer * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 1.2.2.2 bouyer * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 1.2.2.2 bouyer * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 1.2.2.2 bouyer * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 1.2.2.2 bouyer * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 1.2.2.2 bouyer * POSSIBILITY OF SUCH DAMAGE. 34 1.2.2.2 bouyer */ 35 1.2.2.2 bouyer 36 1.2.2.2 bouyer #include <sys/param.h> 37 1.2.2.2 bouyer #include <sys/systm.h> 38 1.2.2.2 bouyer #include <sys/reboot.h> 39 1.2.2.2 bouyer #include <sys/malloc.h> 40 1.2.2.2 bouyer #include <sys/device.h> 41 1.2.2.2 bouyer 42 1.2.2.2 bouyer #include <sys/termios.h> 43 1.2.2.2 bouyer #include <dev/cons.h> 44 1.2.2.2 bouyer #include <sys/conf.h> 45 1.2.2.2 bouyer 46 1.2.2.2 bouyer #include <machine/bus.h> 47 1.2.2.2 bouyer #include <machine/intr.h> 48 1.2.2.2 bouyer 49 1.2.2.2 bouyer #include <dev/ic/comvar.h> 50 1.2.2.2 bouyer #include <dev/ic/comreg.h> 51 1.2.2.2 bouyer 52 1.2.2.2 bouyer #ifdef DEBUG 53 1.2.2.2 bouyer #include <hpcsh/hpcsh/debug.h> 54 1.2.2.2 bouyer #endif 55 1.2.2.2 bouyer 56 1.2.2.2 bouyer #include <hpcsh/dev/hd64461/hd64461var.h> 57 1.2.2.2 bouyer #include <hpcsh/dev/hd64461/hd64461reg.h> 58 1.2.2.2 bouyer #include <hpcsh/dev/hd64461/hd64461intcvar.h> 59 1.2.2.2 bouyer 60 1.2.2.2 bouyer static struct hd64461uart_chip { 61 1.2.2.2 bouyer struct hpcsh_bus_space __tag_body; 62 1.2.2.2 bouyer bus_space_tag_t io_tag; 63 1.2.2.2 bouyer int console; 64 1.2.2.2 bouyer } hd64461uart_chip; 65 1.2.2.2 bouyer 66 1.2.2.2 bouyer struct hd64461uart_softc { 67 1.2.2.2 bouyer struct com_softc sc_com; 68 1.2.2.2 bouyer 69 1.2.2.2 bouyer struct hd64461uart_chip *sc_chip; 70 1.2.2.2 bouyer enum hd64461_module_id sc_module_id; 71 1.2.2.2 bouyer }; 72 1.2.2.2 bouyer 73 1.2.2.2 bouyer /* boot console */ 74 1.2.2.2 bouyer cdev_decl(com); 75 1.2.2.2 bouyer void comcnprobe(struct consdev *); 76 1.2.2.2 bouyer void comcninit(struct consdev *); 77 1.2.2.2 bouyer 78 1.2.2.2 bouyer static int hd64461uart_match(struct device *, struct cfdata *, void *); 79 1.2.2.2 bouyer static void hd64461uart_attach(struct device *, struct device *, void *); 80 1.2.2.2 bouyer 81 1.2.2.2 bouyer struct cfattach hd64461uart_ca = { 82 1.2.2.2 bouyer sizeof(struct hd64461uart_softc), hd64461uart_match, 83 1.2.2.2 bouyer hd64461uart_attach 84 1.2.2.2 bouyer }; 85 1.2.2.2 bouyer 86 1.2.2.2 bouyer static void hd64461uart_init(void); 87 1.2.2.2 bouyer static u_int8_t hd64461uart_read_1(void *, bus_space_handle_t, bus_size_t); 88 1.2.2.2 bouyer static void hd64461uart_write_1(void *, bus_space_handle_t, bus_size_t, 89 1.2.2.2 bouyer u_int8_t); 90 1.2.2.2 bouyer 91 1.2.2.2 bouyer #ifdef DEBUG 92 1.2.2.2 bouyer static void hd64461uart_info(struct hd64461uart_softc *); 93 1.2.2.2 bouyer #endif 94 1.2.2.2 bouyer 95 1.2.2.2 bouyer #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 96 1.2.2.2 bouyer #ifndef COMCN_SPEED 97 1.2.2.2 bouyer #define COMCN_SPEED 19200 98 1.2.2.2 bouyer #endif 99 1.2.2.2 bouyer 100 1.2.2.2 bouyer void 101 1.2.2.2 bouyer comcnprobe(struct consdev *cp) 102 1.2.2.2 bouyer { 103 1.2.2.2 bouyer int maj; 104 1.2.2.2 bouyer 105 1.2.2.2 bouyer /* locate the major number */ 106 1.2.2.2 bouyer for (maj = 0; maj < nchrdev; maj++) 107 1.2.2.2 bouyer if (cdevsw[maj].d_open == comopen) 108 1.2.2.2 bouyer break; 109 1.2.2.2 bouyer 110 1.2.2.2 bouyer /* Initialize required fields. */ 111 1.2.2.2 bouyer cp->cn_dev = makedev(maj, 0); 112 1.2.2.2 bouyer cp->cn_pri = CN_NORMAL; 113 1.2.2.2 bouyer } 114 1.2.2.2 bouyer 115 1.2.2.2 bouyer void 116 1.2.2.2 bouyer comcninit(struct consdev *cp) 117 1.2.2.2 bouyer { 118 1.2.2.2 bouyer hd64461uart_init(); 119 1.2.2.2 bouyer 120 1.2.2.2 bouyer comcnattach(hd64461uart_chip.io_tag, 0x0, COMCN_SPEED, COM_FREQ, 121 1.2.2.2 bouyer CONMODE); 122 1.2.2.2 bouyer 123 1.2.2.2 bouyer hd64461uart_chip.console = 1; 124 1.2.2.2 bouyer } 125 1.2.2.2 bouyer 126 1.2.2.2 bouyer static int 127 1.2.2.2 bouyer hd64461uart_match(struct device *parent, struct cfdata *cf, void *aux) 128 1.2.2.2 bouyer { 129 1.2.2.2 bouyer struct hd64461_attach_args *ha = aux; 130 1.2.2.2 bouyer 131 1.2.2.2 bouyer return (ha->ha_module_id == HD64461_MODULE_UART); 132 1.2.2.2 bouyer } 133 1.2.2.2 bouyer 134 1.2.2.2 bouyer static void 135 1.2.2.2 bouyer hd64461uart_attach(struct device *parent, struct device *self, void *aux) 136 1.2.2.2 bouyer { 137 1.2.2.2 bouyer struct hd64461_attach_args *ha = aux; 138 1.2.2.2 bouyer struct hd64461uart_softc *sc = (struct hd64461uart_softc *)self; 139 1.2.2.2 bouyer struct com_softc *csc = &sc->sc_com; 140 1.2.2.2 bouyer u_int16_t r16; 141 1.2.2.2 bouyer 142 1.2.2.2 bouyer sc->sc_chip = &hd64461uart_chip; 143 1.2.2.2 bouyer 144 1.2.2.2 bouyer sc->sc_module_id = ha->ha_module_id; 145 1.2.2.2 bouyer 146 1.2.2.2 bouyer hd64461uart_init(); 147 1.2.2.2 bouyer 148 1.2.2.2 bouyer csc->sc_iot = sc->sc_chip->io_tag; 149 1.2.2.2 bouyer bus_space_map(csc->sc_iot, 0, 8, 0, &csc->sc_ioh); 150 1.2.2.2 bouyer csc->sc_iobase = 0; 151 1.2.2.2 bouyer csc->sc_frequency = COM_FREQ; 152 1.2.2.2 bouyer 153 1.2.2.2 bouyer /* switch port to UART */ 154 1.2.2.2 bouyer 155 1.2.2.2 bouyer /* supply clock */ 156 1.2.2.2 bouyer r16 = hd64461_reg_read_2(HD64461_SYSSTBCR_REG16); 157 1.2.2.2 bouyer r16 &= ~HD64461_SYSSTBCR_SURTSD; 158 1.2.2.2 bouyer hd64461_reg_write_2(HD64461_SYSSTBCR_REG16, r16); 159 1.2.2.2 bouyer 160 1.2.2.2 bouyer #ifdef DEBUG 161 1.2.2.2 bouyer if (bootverbose) 162 1.2.2.2 bouyer hd64461uart_info(sc); 163 1.2.2.2 bouyer #endif 164 1.2.2.2 bouyer /* sanity check */ 165 1.2.2.2 bouyer if (!comprobe1(csc->sc_iot, csc->sc_ioh)) { 166 1.2.2.2 bouyer printf(": device problem. don't attach.\n"); 167 1.2.2.2 bouyer 168 1.2.2.2 bouyer /* stop clock */ 169 1.2.2.2 bouyer r16 |= HD64461_SYSSTBCR_SURTSD; 170 1.2.2.2 bouyer hd64461_reg_write_2(HD64461_SYSSTBCR_REG16, r16); 171 1.2.2.2 bouyer return; 172 1.2.2.2 bouyer } 173 1.2.2.2 bouyer 174 1.2.2.2 bouyer com_attach_subr(csc); 175 1.2.2.2 bouyer 176 1.2.2.2 bouyer hd64461_intr_establish(HD64461_IRQ_UART, IST_LEVEL, IPL_TTY, 177 1.2.2.2 bouyer comintr, self); 178 1.2.2.2 bouyer } 179 1.2.2.2 bouyer 180 1.2.2.2 bouyer static void 181 1.2.2.2 bouyer hd64461uart_init() 182 1.2.2.2 bouyer { 183 1.2.2.2 bouyer if (hd64461uart_chip.io_tag) 184 1.2.2.2 bouyer return; 185 1.2.2.2 bouyer 186 1.2.2.2 bouyer hd64461uart_chip.io_tag = bus_space_create( 187 1.2.2.2 bouyer &hd64461uart_chip.__tag_body, "HD64461 UART I/O", 188 1.2.2.2 bouyer HD64461_UART_REGBASE, 0); /* no extent */ 189 1.2.2.2 bouyer 190 1.2.2.2 bouyer /* override bus_space_read_1, bus_space_write_1 */ 191 1.2.2.2 bouyer hd64461uart_chip.io_tag->hbs_r_1 = hd64461uart_read_1; 192 1.2.2.2 bouyer hd64461uart_chip.io_tag->hbs_w_1 = hd64461uart_write_1; 193 1.2.2.2 bouyer } 194 1.2.2.2 bouyer 195 1.2.2.2 bouyer static u_int8_t 196 1.2.2.2 bouyer hd64461uart_read_1(void *t, bus_space_handle_t h, bus_size_t ofs) 197 1.2.2.2 bouyer { 198 1.2.2.2 bouyer return *(volatile u_int8_t *)(h + (ofs << 1)); 199 1.2.2.2 bouyer } 200 1.2.2.2 bouyer 201 1.2.2.2 bouyer static void 202 1.2.2.2 bouyer hd64461uart_write_1(void *t, bus_space_handle_t h, bus_size_t ofs, 203 1.2.2.2 bouyer u_int8_t val) 204 1.2.2.2 bouyer { 205 1.2.2.2 bouyer 206 1.2.2.2 bouyer *(volatile u_int8_t *)(h + (ofs << 1)) = val; 207 1.2.2.2 bouyer } 208 1.2.2.2 bouyer 209 1.2.2.2 bouyer #ifdef DEBUG 210 1.2.2.2 bouyer static void 211 1.2.2.2 bouyer hd64461uart_info(struct hd64461uart_softc *sc) 212 1.2.2.2 bouyer { 213 1.2.2.2 bouyer const char name[] = __FUNCTION__; 214 1.2.2.2 bouyer 215 1.2.2.2 bouyer dbg_banner_start(name, sizeof name); 216 1.2.2.2 bouyer dbg_banner_end(); 217 1.2.2.2 bouyer } 218 1.2.2.2 bouyer #endif /* DEBUG */ 219
Indexes created Thu Oct 02 14:10:14 GMT 2025