plum.c revision 1.18.2.2
1 /* $NetBSD: plum.c,v 1.18.2.2 2021/03/20 20:49:43 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 1.18.2.2 2021/03/20 20:49:43 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 CFARG_SUBMATCH, plum_search, 117 CFARG_IATTR, "plumif", 118 CFARG_EOL); 119 120 /* 121 * Other plum module. 122 */ 123 sc->sc_pri = 1; 124 config_search(self, NULL, 125 CFARG_SUBMATCH, plum_search, 126 CFARG_IATTR, "plumif", 127 CFARG_EOL); 128 } 129 130 plumreg_t 131 plum_idcheck(bus_space_tag_t regt) 132 { 133 bus_space_handle_t regh; 134 plumreg_t reg; 135 136 if (bus_space_map(regt, PLUM_ID_REGBASE, 137 PLUM_ID_REGSIZE, 0, ®h)) { 138 printf("ID register map failed\n"); 139 return (0); 140 } 141 reg = plum_conf_read(regt, regh, PLUM_ID_REG); 142 bus_space_unmap(regt, regh, PLUM_ID_REGSIZE); 143 144 return (reg); 145 } 146 147 int 148 plum_print(void *aux, const char *pnp) 149 { 150 151 return (pnp ? QUIET : UNCONF); 152 } 153 154 int 155 plum_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 156 { 157 struct plum_softc *sc = device_private(parent); 158 struct plum_attach_args pa; 159 160 pa.pa_pc = sc->sc_pc; 161 pa.pa_regt = sc->sc_csregt; 162 pa.pa_iot = sc->sc_csiot; 163 pa.pa_memt = sc->sc_csmemt; 164 pa.pa_irq = sc->sc_irq; 165 166 if (config_match(parent, cf, &pa) == sc->sc_pri) { 167 config_attach(parent, cf, &pa, plum_print); 168 } 169 170 return 0; 171 } 172 173 plumreg_t 174 plum_conf_read(bus_space_tag_t t, bus_space_handle_t h, int o) 175 { 176 plumreg_t reg; 177 178 reg = bus_space_read_4(t, h, o); 179 180 return (reg); 181 } 182 183 void 184 plum_conf_write(bus_space_tag_t t, bus_space_handle_t h, int o, plumreg_t v) 185 { 186 187 bus_space_write_4(t, h, o, v); 188 } 189 190 void 191 plum_conf_register_intr(plum_chipset_tag_t t, void *intrt) 192 { 193 194 if (t->pc_intrt) { 195 panic("duplicate intrt"); 196 } 197 198 t->pc_intrt = intrt; 199 } 200 201 void 202 plum_conf_register_power(plum_chipset_tag_t t, void *powert) 203 { 204 205 if (t->pc_powert) { 206 panic("duplicate powert"); 207 } 208 209 t->pc_powert = powert; 210 } 211
Indexes created Tue Oct 07 21:09:53 GMT 2025