1 /* $Id: rmixl_com.c,v 1.8 2018/12/11 06:34:00 thorpej Exp $ */ 2 /*- 3 * Copyright (c) 2006 Urbana-Champaign Independent Media Center. 4 * Copyright (c) 2006 Garrett D'Amore. 5 * All rights reserved. 6 * 7 * Portions of this code were written by Garrett D'Amore for the 8 * Champaign-Urbana Community Wireless Network Project. 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions 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 16 * copyright notice, this list of conditions and the following 17 * disclaimer in the documentation and/or other materials provided 18 * with the distribution. 19 * 3. All advertising materials mentioning features or use of this 20 * software must display the following acknowledgements: 21 * This product includes software developed by the Urbana-Champaign 22 * Independent Media Center. 23 * This product includes software developed by Garrett D'Amore. 24 * 4. Urbana-Champaign Independent Media Center's name and Garrett 25 * D'Amore's name may not be used to endorse or promote products 26 * derived from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE URBANA-CHAMPAIGN INDEPENDENT 29 * MEDIA CENTER AND GARRETT D'AMORE ``AS IS'' AND ANY EXPRESS OR 30 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 31 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE URBANA-CHAMPAIGN INDEPENDENT 33 * MEDIA CENTER OR GARRETT D'AMORE BE LIABLE FOR ANY DIRECT, INDIRECT, 34 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 35 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 36 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 37 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 38 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 39 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 40 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 41 */ 42 43 /*- 44 * Copyright (c) 1998 The NetBSD Foundation, Inc. 45 * All rights reserved. 46 * 47 * This code is derived from software contributed to The NetBSD Foundation 48 * by Charles M. Hannum. 49 * 50 * Redistribution and use in source and binary forms, with or without 51 * modification, are permitted provided that the following conditions 52 * are met: 53 * 1. Redistributions of source code must retain the above copyright 54 * notice, this list of conditions and the following disclaimer. 55 * 2. Redistributions in binary form must reproduce the above copyright 56 * notice, this list of conditions and the following disclaimer in the 57 * documentation and/or other materials provided with the distribution. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 60 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 61 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 62 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 63 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 64 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 65 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 66 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 67 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 68 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 69 * POSSIBILITY OF SUCH DAMAGE. 70 */ 71 72 /*- 73 * Copyright (c) 1991 The Regents of the University of California. 74 * All rights reserved. 75 * 76 * Redistribution and use in source and binary forms, with or without 77 * modification, are permitted provided that the following conditions 78 * are met: 79 * 1. Redistributions of source code must retain the above copyright 80 * notice, this list of conditions and the following disclaimer. 81 * 2. Redistributions in binary form must reproduce the above copyright 82 * notice, this list of conditions and the following disclaimer in the 83 * documentation and/or other materials provided with the distribution. 84 * 3. Neither the name of the University nor the names of its contributors 85 * may be used to endorse or promote products derived from this software 86 * without specific prior written permission. 87 * 88 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 89 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 90 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 91 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 92 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 93 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 94 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 95 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 96 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 97 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 98 * SUCH DAMAGE. 99 * 100 * @(#)com.c 7.5 (Berkeley) 5/16/91 101 */ 102 103 #include <sys/cdefs.h> 104 __KERNEL_RCSID(0, "$NetBSD: rmixl_com.c,v 1.8 2018/12/11 06:34:00 thorpej Exp $"); 105 106 #include <sys/param.h> 107 #include <sys/systm.h> 108 #include <sys/device.h> 109 #include <sys/kernel.h> 110 #include <sys/termios.h> 111 #include <sys/ttydefaults.h> 112 #include <sys/types.h> 113 114 #include <sys/bus.h> 115 116 #include <dev/cons.h> 117 #include <dev/ic/comreg.h> 118 #include <dev/ic/comvar.h> 119 120 #include <mips/cpuregs.h> 121 122 #include <mips/rmi/rmixlvar.h> 123 #include <mips/rmi/rmixl_intr.h> 124 #include <mips/rmi/rmixl_obiovar.h> 125 #include <mips/rmi/rmixl_comvar.h> 126 127 /* span of UART regs in bytes */ 128 #define RMIXL_IO_DEV_UART_SIZE (COM_NPORTS * sizeof(uint32_t)) 129 130 struct rmixl_com_softc { 131 struct com_softc sc_com; 132 }; 133 134 static void rmixl_com_init_regs(struct com_regs *, bus_space_tag_t, 135 bus_space_handle_t, bus_addr_t); 136 static int rmixl_com_match(device_t, cfdata_t , void *); 137 static void rmixl_com_attach(device_t, device_t, void *); 138 139 CFATTACH_DECL_NEW(com_rmixl, sizeof(struct rmixl_com_softc), 140 rmixl_com_match, rmixl_com_attach, NULL, NULL); 141 142 volatile int32_t *com0addr = (int32_t *) 143 MIPS_PHYS_TO_KSEG1(RMIXL_IO_DEV_PBASE + RMIXL_IO_DEV_UART_1); 144 145 extern int comcnfreq; 146 extern int comcnspeed; 147 148 void 149 rmixl_putchar_init(uint64_t io_pbase) 150 { 151 int rate; 152 extern int comspeed(long, long, int); 153 154 com0addr = (uint32_t *) 155 MIPS_PHYS_TO_KSEG1(io_pbase + RMIXL_IO_DEV_UART_1); 156 157 if (comcnfreq != -1) { 158 rate = comspeed(comcnspeed, comcnfreq, COM_TYPE_NORMAL); 159 if (rate < 0) 160 return; /* XXX */ 161 162 com0addr[com_ier] = 0; 163 com0addr[com_lctl] = htobe32(LCR_DLAB); 164 com0addr[com_dlbl] = htobe32(rate & 0xff); 165 com0addr[com_dlbh] = htobe32(rate >> 8); 166 com0addr[com_lctl] = htobe32(LCR_8BITS); /* XXX */ 167 com0addr[com_mcr] = htobe32(MCR_DTR|MCR_RTS); 168 com0addr[com_fifo] = htobe32( 169 FIFO_ENABLE|FIFO_RCV_RST|FIFO_XMT_RST|FIFO_TRIGGER_1); 170 } 171 } 172 173 174 void 175 rmixl_putchar(char c) 176 { 177 int timo = 150000; 178 179 while ((be32toh(com0addr[com_lsr]) & LSR_TXRDY) == 0) 180 if (--timo == 0) 181 break; 182 183 com0addr[com_data] = htobe32((uint32_t)c); 184 185 while ((be32toh(com0addr[com_lsr]) & LSR_TSRE) == 0) 186 if (--timo == 0) 187 break; 188 } 189 190 void 191 rmixl_puts(const char *restrict s) 192 { 193 char c; 194 195 while ((c = *s++) != 0) 196 rmixl_putchar(c); 197 } 198 199 static char hexc[] = "0123456789abcdef"; 200 201 #define RMIXL_PUTHEX \ 202 u_int shift = sizeof(val) * 8; \ 203 rmixl_putchar('0'); \ 204 rmixl_putchar('x'); \ 205 do { \ 206 shift -= 4; \ 207 rmixl_putchar(hexc[(val >> shift) & 0xf]); \ 208 } while(shift != 0) 209 210 void 211 rmixl_puthex32(uint32_t val) 212 { 213 RMIXL_PUTHEX; 214 } 215 216 void 217 rmixl_puthex64(uint64_t val) 218 { 219 RMIXL_PUTHEX; 220 } 221 222 int 223 rmixl_com_match(device_t parent, cfdata_t cf, void *aux) 224 { 225 struct obio_attach_args *obio = aux; 226 bus_space_tag_t bst; 227 bus_space_handle_t ioh; 228 bus_addr_t addr; 229 bus_size_t size; 230 struct com_regs regs; 231 int rv; 232 233 bst = obio->obio_eb_bst; 234 addr = obio->obio_addr; 235 size = (bus_size_t)RMIXL_IO_DEV_UART_SIZE; 236 237 if (com_is_console(bst, addr, ®s.cr_ioh)) 238 return 1; 239 240 if (bus_space_map(bst, addr, size, 0, &ioh)) 241 return 0; /* FAIL */ 242 243 rmixl_com_init_regs(®s, bst, ioh, addr); 244 245 rv = com_probe_subr(®s); 246 247 bus_space_unmap(bst, ioh, size); 248 249 return rv; 250 } 251 252 void 253 rmixl_com_attach(device_t parent, device_t self, void *aux) 254 { 255 struct rmixl_com_softc *rsc = device_private(self); 256 struct com_softc *sc = &rsc->sc_com; 257 struct obio_attach_args *obio = aux; 258 bus_space_tag_t bst; 259 bus_space_handle_t ioh; 260 bus_addr_t addr; 261 bus_size_t size; 262 263 sc->sc_dev = self; 264 sc->sc_frequency = comcnfreq; 265 266 bst = obio->obio_eb_bst; 267 addr = obio->obio_addr; 268 size = (bus_size_t)RMIXL_IO_DEV_UART_SIZE; 269 270 if (!com_is_console(bst, addr, &ioh) 271 && bus_space_map(bst, addr, size, 0, &ioh) != 0) { 272 aprint_error(": can't map registers\n"); 273 return; 274 } 275 276 rmixl_com_init_regs(&sc->sc_regs, bst, ioh, addr); 277 278 com_attach_subr(sc); 279 280 rmixl_intr_establish(obio->obio_intr, obio->obio_tmsk, 281 IPL_VM, RMIXL_TRIG_LEVEL, RMIXL_POLR_HIGH, 282 comintr, sc, true); 283 284 } 285 286 void 287 rmixl_com_init_regs(struct com_regs *regsp, bus_space_tag_t st, 288 bus_space_handle_t sh, bus_addr_t addr) 289 { 290 291 com_init_regs_stride(regsp, st, sh, addr, 2); 292 } 293 294 void 295 rmixl_com_cnattach(bus_addr_t addr, int speed, int freq, 296 int type, tcflag_t mode) 297 { 298 bus_space_tag_t bst; 299 struct com_regs regs; 300 301 bst = (bus_space_tag_t)&rmixl_configuration.rc_obio_eb_memt; 302 303 rmixl_com_init_regs(®s, bst, 0, addr); 304 305 comcnattach1(®s, speed, freq, type, mode); 306 } 307
Indexes created Sat Sep 20 22:09:52 GMT 2025