1 /* $NetBSD: plum.c,v 1.20 2021/08/07 16:18:54 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by UCHIYAMA Yasushi. 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 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: plum.c,v 1.20 2021/08/07 16:18:54 thorpej Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/device.h> 38 #include <sys/kmem.h> 39 40 #include <machine/bus.h> 41 #include <machine/intr.h> 42 43 #include <hpcmips/tx/tx39var.h> 44 #include <hpcmips/tx/txcsbusvar.h> 45 #include <hpcmips/dev/plumvar.h> 46 #include <hpcmips/dev/plumreg.h> 47 48 int plum_match(device_t, cfdata_t, void *); 49 void plum_attach(device_t, device_t, void *); 50 int plum_print(void *, const char *); 51 int plum_search(device_t, cfdata_t, const int *, void *); 52 53 struct plum_softc { 54 plum_chipset_tag_t sc_pc; 55 bus_space_tag_t sc_csregt; 56 bus_space_tag_t sc_csiot; 57 bus_space_tag_t sc_csmemt; 58 int sc_irq; 59 int sc_pri; 60 }; 61 62 CFATTACH_DECL_NEW(plum, sizeof(struct plum_softc), 63 plum_match, plum_attach, NULL, NULL); 64 65 plumreg_t plum_idcheck(bus_space_tag_t); 66 67 int 68 plum_match(device_t parent, cfdata_t cf, void *aux) 69 { 70 struct cs_attach_args *ca = aux; 71 72 switch (plum_idcheck(ca->ca_csreg.cstag)) { 73 default: 74 return (0); 75 case PLUM2_1: 76 case PLUM2_2: 77 /* nothing */; 78 } 79 80 return (1); 81 } 82 83 void 84 plum_attach(device_t parent, device_t self, void *aux) 85 { 86 struct cs_attach_args *ca = aux; 87 struct plum_softc *sc = device_private(self); 88 plumreg_t reg; 89 90 sc->sc_csregt = ca->ca_csreg.cstag; 91 sc->sc_csiot = ca->ca_csio.cstag; 92 sc->sc_csmemt = ca->ca_csmem.cstag; 93 sc->sc_irq = ca->ca_irq1; 94 95 switch (reg = plum_idcheck(sc->sc_csregt)) { 96 default: 97 printf(": unknown revision %#x\n", reg); 98 return; 99 case PLUM2_1: 100 printf(": Plum2 #1\n"); 101 break; 102 case PLUM2_2: 103 printf(": Plum2 #2\n"); 104 break; 105 } 106 sc->sc_pc = kmem_zalloc(sizeof(struct plum_chipset_tag), KM_SLEEP); 107 sc->sc_pc->pc_tc = ca->ca_tc; 108 109 /* Attach Plum devices */ 110 /* 111 * interrupt, power/clock module is used by other plum module. 112 * attach first. 113 */ 114 sc->sc_pri = 2; 115 config_search(self, NULL, 116 CFARGS(.search = plum_search)); 117 118 /* 119 * Other plum module. 120 */ 121 sc->sc_pri = 1; 122 config_search(self, NULL, 123 CFARGS(.search = plum_search)); 124 } 125 126 plumreg_t 127 plum_idcheck(bus_space_tag_t regt) 128 { 129 bus_space_handle_t regh; 130 plumreg_t reg; 131 132 if (bus_space_map(regt, PLUM_ID_REGBASE, 133 PLUM_ID_REGSIZE, 0, ®h)) { 134 printf("ID register map failed\n"); 135 return (0); 136 } 137 reg = plum_conf_read(regt, regh, PLUM_ID_REG); 138 bus_space_unmap(regt, regh, PLUM_ID_REGSIZE); 139 140 return (reg); 141 } 142 143 int 144 plum_print(void *aux, const char *pnp) 145 { 146 147 return (pnp ? QUIET : UNCONF); 148 } 149 150 int 151 plum_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 152 { 153 struct plum_softc *sc = device_private(parent); 154 struct plum_attach_args pa; 155 156 pa.pa_pc = sc->sc_pc; 157 pa.pa_regt = sc->sc_csregt; 158 pa.pa_iot = sc->sc_csiot; 159 pa.pa_memt = sc->sc_csmemt; 160 pa.pa_irq = sc->sc_irq; 161 162 if (/*XXX*/config_probe(parent, cf, &pa) == sc->sc_pri) { 163 config_attach(parent, cf, &pa, plum_print, CFARGS_NONE); 164 } 165 166 return 0; 167 } 168 169 plumreg_t 170 plum_conf_read(bus_space_tag_t t, bus_space_handle_t h, int o) 171 { 172 plumreg_t reg; 173 174 reg = bus_space_read_4(t, h, o); 175 176 return (reg); 177 } 178 179 void 180 plum_conf_write(bus_space_tag_t t, bus_space_handle_t h, int o, plumreg_t v) 181 { 182 183 bus_space_write_4(t, h, o, v); 184 } 185 186 void 187 plum_conf_register_intr(plum_chipset_tag_t t, void *intrt) 188 { 189 190 if (t->pc_intrt) { 191 panic("duplicate intrt"); 192 } 193 194 t->pc_intrt = intrt; 195 } 196 197 void 198 plum_conf_register_power(plum_chipset_tag_t t, void *powert) 199 { 200 201 if (t->pc_powert) { 202 panic("duplicate powert"); 203 } 204 205 t->pc_powert = powert; 206 } 207
Indexes created Sun Sep 21 16:09:51 GMT 2025