1 /* $NetBSD: pq3duart.c,v 1.8 2021/08/07 16:19:02 thorpej Exp $ */ 2 /*- 3 * Copyright (c) 2010, 2011 The NetBSD Foundation, Inc. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Raytheon BBN Technologies Corp and Defense Advanced Research Projects 8 * Agency and which was developed by Matt Thomas of 3am Software Foundry. 9 * 10 * This material is based upon work supported by the Defense Advanced Research 11 * Projects Agency and Space and Naval Warfare Systems Center, Pacific, under 12 * Contract No. N66001-09-C-2073. 13 * Approved for Public Release, Distribution Unlimited 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * 1. Redistributions of source code must retain the above copyright 19 * notice, this list of conditions and the following disclaimer. 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in the 22 * documentation and/or other materials provided with the distribution. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 25 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 26 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 34 * POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: pq3duart.c,v 1.8 2021/08/07 16:19:02 thorpej Exp $"); 39 40 #include "ioconf.h" 41 42 #include <sys/param.h> 43 #include <sys/cpu.h> 44 #include <sys/device.h> 45 #include <sys/tty.h> 46 47 #include <sys/intr.h> 48 #include <sys/bus.h> 49 50 #include <dev/ic/comreg.h> 51 #include <dev/ic/comvar.h> 52 53 #include <powerpc/booke/cpuvar.h> 54 #include <powerpc/booke/e500var.h> 55 #include <powerpc/booke/e500reg.h> 56 57 struct pq3duart_softc { 58 device_t dsc_dev; 59 struct com_softc *dsc_sc[2]; 60 bus_space_tag_t dsc_memt; 61 bus_addr_t dsc_base; 62 void *dsc_ih; 63 }; 64 65 struct pq3duart_attach_args { 66 const char *da_busname; 67 bus_space_tag_t da_memt; 68 bus_addr_t da_addr; 69 bus_addr_t da_size; 70 u_int da_port; 71 }; 72 73 static int pq3duart_match(device_t, cfdata_t, void *); 74 static void pq3duart_attach(device_t, device_t, void *); 75 static int com_pq3duart_match(device_t, cfdata_t, void *); 76 static void com_pq3duart_attach(device_t, device_t, void *); 77 78 CFATTACH_DECL_NEW(pq3duart, sizeof(struct pq3duart_softc), 79 pq3duart_match, pq3duart_attach, NULL, NULL); 80 81 CFATTACH_DECL_NEW(com_pq3duart, sizeof(struct com_softc), 82 com_pq3duart_match, com_pq3duart_attach, NULL, NULL); 83 84 static int 85 pq3duart_match(device_t parent, cfdata_t cf, void *aux) 86 { 87 88 if (!e500_cpunode_submatch(parent, cf, cf->cf_name, aux)) 89 return 0; 90 91 return 1; 92 } 93 94 static int 95 com_pq3duart_match(device_t parent, cfdata_t cfdata, void *aux) 96 { 97 struct pq3duart_softc * const dsc = device_private(parent); 98 struct pq3duart_attach_args * const da = aux; 99 struct com_regs regs; 100 101 if ((da->da_port != 1 && da->da_port != 2) 102 || dsc->dsc_sc[da->da_port-1] != NULL) 103 return 0; 104 105 bus_space_tag_t memt = da->da_memt; 106 bus_addr_t addr = da->da_addr; 107 bus_addr_t size = da->da_size; 108 bus_space_handle_t memh; 109 110 if (com_is_console(memt, addr, &memh)) 111 return 1; 112 113 if (bus_space_map(memt, addr, size, 0, &memh)) 114 return 0; 115 116 com_init_regs(®s, memt, memh, addr); 117 118 int rv = com_probe_subr(®s); 119 120 bus_space_unmap(memt, memh, size); 121 122 return rv; 123 } 124 125 static int 126 pq3duart_intr(void *arg) 127 { 128 struct pq3duart_softc * const dsc = arg; 129 int rv = 0; 130 131 if (dsc->dsc_sc[0] != NULL) 132 rv += comintr(dsc->dsc_sc[0]); 133 if (dsc->dsc_sc[1] != NULL) 134 rv += comintr(dsc->dsc_sc[1]); 135 136 return rv; 137 } 138 139 static int 140 pq3duart_print(void *aux, const char *pnp) 141 { 142 struct pq3duart_attach_args * const da = aux; 143 144 if (pnp != NULL) 145 return QUIET; 146 147 aprint_normal(" port %d", da->da_port); 148 149 return UNCONF; 150 } 151 152 static void 153 pq3duart_attach(device_t parent, device_t self, void *aux) 154 { 155 struct cpunode_softc * const psc = device_private(parent); 156 struct pq3duart_softc * const dsc = device_private(self); 157 struct cpunode_attach_args * const cna = aux; 158 struct cpunode_locators * const cnl = &cna->cna_locs; 159 struct pq3duart_attach_args da; 160 u_int nports = cnl->cnl_size / DUART_SIZE; 161 162 psc->sc_children |= cna->cna_childmask; 163 dsc->dsc_dev = self; 164 165 aprint_normal(": %u ports\n", nports); 166 167 for (u_int port = 1; port <= uimin(2, nports); port++) { 168 da.da_memt = cna->cna_memt; 169 da.da_port = port; 170 da.da_addr = cnl->cnl_addr + (port - 1) * DUART_SIZE; 171 da.da_size = COM_NPORTS; 172 config_found(self, &da, pq3duart_print, CFARGS_NONE); 173 } 174 175 if (dsc->dsc_sc[0] != NULL || dsc->dsc_sc[1] != NULL) { 176 dsc->dsc_ih = intr_establish(cnl->cnl_intrs[0], IPL_SERIAL, 177 IST_ONCHIP, pq3duart_intr, dsc); 178 if (dsc->dsc_ih == NULL) 179 aprint_error_dev(self, 180 "failed to establish interrupt %d\n", 181 cnl->cnl_intrs[0]); 182 else 183 aprint_normal_dev(self, 184 "interrupting on irq %d\n", 185 cnl->cnl_intrs[0]); 186 } 187 } 188 189 static void 190 com_pq3duart_attach(device_t parent, device_t self, void *aux) 191 { 192 struct pq3duart_softc * const dsc = device_private(parent); 193 struct com_softc * const sc = device_private(self); 194 struct pq3duart_attach_args * const da = aux; 195 196 dsc->dsc_sc[da->da_port-1] = sc; 197 sc->sc_dev = self; 198 sc->sc_frequency = (int) board_info_get_number("bus-frequency"); 199 200 bus_space_tag_t memt = da->da_memt; 201 bus_addr_t addr = da->da_addr; 202 bus_addr_t size = da->da_size; 203 bus_space_handle_t memh; 204 205 if (!com_is_console(memt, addr, &memh)) { 206 int error = bus_space_map(memt, addr, size, 0, &memh); 207 if (error) { 208 aprint_error(": failed to map registers: %d\n", error); 209 return; 210 } 211 } 212 213 com_init_regs(&sc->sc_regs, memt, memh, addr); 214 sc->sc_regs.cr_nports = size; 215 216 com_attach_subr(sc); 217 218 } 219
Indexes created Tue Sep 30 11:09:46 GMT 2025