hd64461uart.c revision 1.10.6.2
1 1.10.6.2 nathanw /* $NetBSD: hd64461uart.c,v 1.10.6.2 2002/09/17 21:14:52 nathanw Exp $ */ 2 1.10.6.2 nathanw 3 1.10.6.2 nathanw /*- 4 1.10.6.2 nathanw * Copyright (c) 2001, 2002 The NetBSD Foundation, Inc. 5 1.10.6.2 nathanw * All rights reserved. 6 1.10.6.2 nathanw * 7 1.10.6.2 nathanw * Redistribution and use in source and binary forms, with or without 8 1.10.6.2 nathanw * modification, are permitted provided that the following conditions 9 1.10.6.2 nathanw * are met: 10 1.10.6.2 nathanw * 1. Redistributions of source code must retain the above copyright 11 1.10.6.2 nathanw * notice, this list of conditions and the following disclaimer. 12 1.10.6.2 nathanw * 2. Redistributions in binary form must reproduce the above copyright 13 1.10.6.2 nathanw * notice, this list of conditions and the following disclaimer in the 14 1.10.6.2 nathanw * documentation and/or other materials provided with the distribution. 15 1.10.6.2 nathanw * 3. All advertising materials mentioning features or use of this software 16 1.10.6.2 nathanw * must display the following acknowledgement: 17 1.10.6.2 nathanw * This product includes software developed by the NetBSD 18 1.10.6.2 nathanw * Foundation, Inc. and its contributors. 19 1.10.6.2 nathanw * 4. Neither the name of The NetBSD Foundation nor the names of its 20 1.10.6.2 nathanw * contributors may be used to endorse or promote products derived 21 1.10.6.2 nathanw * from this software without specific prior written permission. 22 1.10.6.2 nathanw * 23 1.10.6.2 nathanw * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 1.10.6.2 nathanw * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 1.10.6.2 nathanw * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 1.10.6.2 nathanw * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27 1.10.6.2 nathanw * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 1.10.6.2 nathanw * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 1.10.6.2 nathanw * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 1.10.6.2 nathanw * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 1.10.6.2 nathanw * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 1.10.6.2 nathanw * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 1.10.6.2 nathanw * POSSIBILITY OF SUCH DAMAGE. 34 1.10.6.2 nathanw */ 35 1.10.6.2 nathanw 36 1.10.6.2 nathanw #include "opt_kgdb.h" 37 1.10.6.2 nathanw 38 1.10.6.2 nathanw #include <sys/param.h> 39 1.10.6.2 nathanw #include <sys/systm.h> 40 1.10.6.2 nathanw #include <sys/reboot.h> 41 1.10.6.2 nathanw #include <sys/malloc.h> 42 1.10.6.2 nathanw #include <sys/device.h> 43 1.10.6.2 nathanw #include <sys/kgdb.h> 44 1.10.6.2 nathanw 45 1.10.6.2 nathanw #include <sys/termios.h> 46 1.10.6.2 nathanw #include <dev/cons.h> 47 1.10.6.2 nathanw #include <sys/conf.h> 48 1.10.6.2 nathanw 49 1.10.6.2 nathanw #include <machine/bus.h> 50 1.10.6.2 nathanw #include <machine/intr.h> 51 1.10.6.2 nathanw #include <machine/console.h> 52 1.10.6.2 nathanw 53 1.10.6.2 nathanw #include <dev/ic/comvar.h> 54 1.10.6.2 nathanw #include <dev/ic/comreg.h> 55 1.10.6.2 nathanw 56 1.10.6.2 nathanw #include <machine/debug.h> 57 1.10.6.2 nathanw 58 1.10.6.2 nathanw #include <hpcsh/dev/hd64461/hd64461var.h> 59 1.10.6.2 nathanw #include <hpcsh/dev/hd64461/hd64461reg.h> 60 1.10.6.2 nathanw #include <hpcsh/dev/hd64461/hd64461intcreg.h> 61 1.10.6.2 nathanw #include <hpcsh/dev/hd64461/hd64461uartvar.h> 62 1.10.6.2 nathanw #include <hpcsh/dev/hd64461/hd64461uartreg.h> 63 1.10.6.2 nathanw 64 1.10.6.2 nathanw STATIC struct hd64461uart_chip { 65 1.10.6.2 nathanw struct hpcsh_bus_space __tag_body; 66 1.10.6.2 nathanw bus_space_tag_t io_tag; 67 1.10.6.2 nathanw int console; 68 1.10.6.2 nathanw } hd64461uart_chip; 69 1.10.6.2 nathanw 70 1.10.6.2 nathanw struct hd64461uart_softc { 71 1.10.6.2 nathanw struct com_softc sc_com; 72 1.10.6.2 nathanw 73 1.10.6.2 nathanw struct hd64461uart_chip *sc_chip; 74 1.10.6.2 nathanw enum hd64461_module_id sc_module_id; 75 1.10.6.2 nathanw }; 76 1.10.6.2 nathanw 77 1.10.6.2 nathanw /* boot console */ 78 1.10.6.2 nathanw void hd64461uartcnprobe(struct consdev *); 79 1.10.6.2 nathanw void hd64461uartcninit(struct consdev *); 80 1.10.6.2 nathanw 81 1.10.6.2 nathanw STATIC int hd64461uart_match(struct device *, struct cfdata *, void *); 82 1.10.6.2 nathanw STATIC void hd64461uart_attach(struct device *, struct device *, void *); 83 1.10.6.2 nathanw 84 1.10.6.2 nathanw struct cfattach hd64461uart_ca = { 85 1.10.6.2 nathanw sizeof(struct hd64461uart_softc), hd64461uart_match, 86 1.10.6.2 nathanw hd64461uart_attach 87 1.10.6.2 nathanw }; 88 1.10.6.2 nathanw 89 1.10.6.2 nathanw STATIC void hd64461uart_init(void); 90 1.10.6.2 nathanw STATIC u_int8_t hd64461uart_read_1(void *, bus_space_handle_t, bus_size_t); 91 1.10.6.2 nathanw STATIC void hd64461uart_write_1(void *, bus_space_handle_t, bus_size_t, 92 1.10.6.2 nathanw u_int8_t); 93 1.10.6.2 nathanw 94 1.10.6.2 nathanw #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 95 1.10.6.2 nathanw #ifndef COMCN_SPEED 96 1.10.6.2 nathanw #define COMCN_SPEED 19200 97 1.10.6.2 nathanw #endif 98 1.10.6.2 nathanw 99 1.10.6.2 nathanw void 100 1.10.6.2 nathanw hd64461uartcnprobe(struct consdev *cp) 101 1.10.6.2 nathanw { 102 1.10.6.2 nathanw extern const struct cdevsw com_cdevsw; 103 1.10.6.2 nathanw int maj; 104 1.10.6.2 nathanw 105 1.10.6.2 nathanw /* locate the major number */ 106 1.10.6.2 nathanw maj = cdevsw_lookup_major(&com_cdevsw); 107 1.10.6.2 nathanw 108 1.10.6.2 nathanw /* Initialize required fields. */ 109 1.10.6.2 nathanw cp->cn_dev = makedev(maj, 0); 110 1.10.6.2 nathanw cp->cn_pri = CN_NORMAL; 111 1.10.6.2 nathanw } 112 1.10.6.2 nathanw 113 1.10.6.2 nathanw void 114 1.10.6.2 nathanw hd64461uartcninit(struct consdev *cp) 115 1.10.6.2 nathanw { 116 1.10.6.2 nathanw 117 1.10.6.2 nathanw hd64461uart_init(); 118 1.10.6.2 nathanw 119 1.10.6.2 nathanw comcnattach(hd64461uart_chip.io_tag, 0x0, COMCN_SPEED, COM_FREQ, 120 1.10.6.2 nathanw CONMODE); 121 1.10.6.2 nathanw 122 1.10.6.2 nathanw hd64461uart_chip.console = 1; 123 1.10.6.2 nathanw } 124 1.10.6.2 nathanw 125 1.10.6.2 nathanw #ifdef KGDB 126 1.10.6.2 nathanw int 127 1.10.6.2 nathanw hd64461uart_kgdb_init() 128 1.10.6.2 nathanw { 129 1.10.6.2 nathanw 130 1.10.6.2 nathanw if (strcmp(kgdb_devname, "hd64461uart") != 0) 131 1.10.6.2 nathanw return (1); 132 1.10.6.2 nathanw 133 1.10.6.2 nathanw if (hd64461uart_chip.console) 134 1.10.6.2 nathanw return (1); /* can't share with console */ 135 1.10.6.2 nathanw 136 1.10.6.2 nathanw hd64461uart_init(); 137 1.10.6.2 nathanw 138 1.10.6.2 nathanw if (com_kgdb_attach(hd64461uart_chip.io_tag, 0x0, kgdb_rate, 139 1.10.6.2 nathanw COM_FREQ, CONMODE) != 0) { 140 1.10.6.2 nathanw printf("%s: KGDB console open failed.\n", __FUNCTION__); 141 1.10.6.2 nathanw return (1); 142 1.10.6.2 nathanw } 143 1.10.6.2 nathanw 144 1.10.6.2 nathanw return (0); 145 1.10.6.2 nathanw } 146 1.10.6.2 nathanw #endif /* KGDB */ 147 1.10.6.2 nathanw 148 1.10.6.2 nathanw int 149 1.10.6.2 nathanw hd64461uart_match(struct device *parent, struct cfdata *cf, void *aux) 150 1.10.6.2 nathanw { 151 1.10.6.2 nathanw struct hd64461_attach_args *ha = aux; 152 1.10.6.2 nathanw 153 1.10.6.2 nathanw return (ha->ha_module_id == HD64461_MODULE_UART); 154 1.10.6.2 nathanw } 155 1.10.6.2 nathanw 156 1.10.6.2 nathanw void 157 1.10.6.2 nathanw hd64461uart_attach(struct device *parent, struct device *self, void *aux) 158 1.10.6.2 nathanw { 159 1.10.6.2 nathanw struct hd64461_attach_args *ha = aux; 160 1.10.6.2 nathanw struct hd64461uart_softc *sc = (struct hd64461uart_softc *)self; 161 1.10.6.2 nathanw struct com_softc *csc = &sc->sc_com; 162 1.10.6.2 nathanw u_int16_t r16; 163 1.10.6.2 nathanw 164 1.10.6.2 nathanw sc->sc_chip = &hd64461uart_chip; 165 1.10.6.2 nathanw 166 1.10.6.2 nathanw sc->sc_module_id = ha->ha_module_id; 167 1.10.6.2 nathanw 168 1.10.6.2 nathanw if (!sc->sc_chip->console) 169 1.10.6.2 nathanw hd64461uart_init(); 170 1.10.6.2 nathanw 171 1.10.6.2 nathanw csc->sc_iot = sc->sc_chip->io_tag; 172 1.10.6.2 nathanw bus_space_map(csc->sc_iot, 0, 8, 0, &csc->sc_ioh); 173 1.10.6.2 nathanw csc->sc_iobase = 0; 174 1.10.6.2 nathanw csc->sc_frequency = COM_FREQ; 175 1.10.6.2 nathanw 176 1.10.6.2 nathanw /* switch port to UART */ 177 1.10.6.2 nathanw 178 1.10.6.2 nathanw /* supply clock */ 179 1.10.6.2 nathanw r16 = hd64461_reg_read_2(HD64461_SYSSTBCR_REG16); 180 1.10.6.2 nathanw r16 &= ~HD64461_SYSSTBCR_SURTSD; 181 1.10.6.2 nathanw hd64461_reg_write_2(HD64461_SYSSTBCR_REG16, r16); 182 1.10.6.2 nathanw 183 1.10.6.2 nathanw /* sanity check */ 184 1.10.6.2 nathanw if (!comprobe1(csc->sc_iot, csc->sc_ioh)) { 185 1.10.6.2 nathanw printf(": device problem. don't attach.\n"); 186 1.10.6.2 nathanw 187 1.10.6.2 nathanw /* stop clock */ 188 1.10.6.2 nathanw r16 |= HD64461_SYSSTBCR_SURTSD; 189 1.10.6.2 nathanw hd64461_reg_write_2(HD64461_SYSSTBCR_REG16, r16); 190 1.10.6.2 nathanw return; 191 1.10.6.2 nathanw } 192 1.10.6.2 nathanw 193 1.10.6.2 nathanw com_attach_subr(csc); 194 1.10.6.2 nathanw 195 1.10.6.2 nathanw hd6446x_intr_establish(HD64461_INTC_UART, IST_LEVEL, IPL_TTY, 196 1.10.6.2 nathanw comintr, self); 197 1.10.6.2 nathanw } 198 1.10.6.2 nathanw 199 1.10.6.2 nathanw void 200 1.10.6.2 nathanw hd64461uart_init() 201 1.10.6.2 nathanw { 202 1.10.6.2 nathanw 203 1.10.6.2 nathanw if (hd64461uart_chip.io_tag) 204 1.10.6.2 nathanw return; 205 1.10.6.2 nathanw 206 1.10.6.2 nathanw hd64461uart_chip.io_tag = bus_space_create( 207 1.10.6.2 nathanw &hd64461uart_chip.__tag_body, "HD64461 UART I/O", 208 1.10.6.2 nathanw HD64461_UART_REGBASE, 0); /* no extent */ 209 1.10.6.2 nathanw 210 1.10.6.2 nathanw /* override bus_space_read_1, bus_space_write_1 */ 211 1.10.6.2 nathanw hd64461uart_chip.io_tag->hbs_r_1 = hd64461uart_read_1; 212 1.10.6.2 nathanw hd64461uart_chip.io_tag->hbs_w_1 = hd64461uart_write_1; 213 1.10.6.2 nathanw } 214 1.10.6.2 nathanw 215 1.10.6.2 nathanw u_int8_t 216 1.10.6.2 nathanw hd64461uart_read_1(void *t, bus_space_handle_t h, bus_size_t ofs) 217 1.10.6.2 nathanw { 218 1.10.6.2 nathanw 219 1.10.6.2 nathanw return *(__volatile__ u_int8_t *)(h + (ofs << 1)); 220 1.10.6.2 nathanw } 221 1.10.6.2 nathanw 222 1.10.6.2 nathanw void 223 1.10.6.2 nathanw hd64461uart_write_1(void *t, bus_space_handle_t h, bus_size_t ofs, 224 1.10.6.2 nathanw u_int8_t val) 225 1.10.6.2 nathanw { 226 1.10.6.2 nathanw 227 1.10.6.2 nathanw *(__volatile__ u_int8_t *)(h + (ofs << 1)) = val; 228 1.10.6.2 nathanw } 229
Indexes created Thu Oct 02 14:10:14 GMT 2025