plum.c revision 1.12.74.1
1 /* $NetBSD: plum.c,v 1.12.74.1 2008/06/02 13:22:10 mjf 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 1.12.74.1 2008/06/02 13:22:10 mjf Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/device.h> 38 #include <sys/malloc.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(struct device *, struct cfdata *, void *); 49 void plum_attach(struct device *, struct device *, void *); 50 int plum_print(void *, const char *); 51 int plum_search(struct device *, struct cfdata *, const int *, void *); 52 53 struct plum_softc { 54 struct device sc_dev; 55 plum_chipset_tag_t sc_pc; 56 bus_space_tag_t sc_csregt; 57 bus_space_tag_t sc_csiot; 58 bus_space_tag_t sc_csmemt; 59 int sc_irq; 60 int sc_pri; 61 }; 62 63 CFATTACH_DECL(plum, sizeof(struct plum_softc), 64 plum_match, plum_attach, NULL, NULL); 65 66 plumreg_t plum_idcheck(bus_space_tag_t); 67 68 int 69 plum_match(struct device *parent, struct cfdata *cf, void *aux) 70 { 71 struct cs_attach_args *ca = aux; 72 73 switch (plum_idcheck(ca->ca_csreg.cstag)) { 74 default: 75 return (0); 76 case PLUM2_1: 77 case PLUM2_2: 78 /* nothing */; 79 } 80 81 return (1); 82 } 83 84 void 85 plum_attach(struct device *parent, struct device *self, void *aux) 86 { 87 struct cs_attach_args *ca = aux; 88 struct plum_softc *sc = (void*)self; 89 plumreg_t reg; 90 91 sc->sc_csregt = ca->ca_csreg.cstag; 92 sc->sc_csiot = ca->ca_csio.cstag; 93 sc->sc_csmemt = ca->ca_csmem.cstag; 94 sc->sc_irq = ca->ca_irq1; 95 96 switch (reg = plum_idcheck(sc->sc_csregt)) { 97 default: 98 printf(": unknown revision %#x\n", reg); 99 return; 100 case PLUM2_1: 101 printf(": Plum2 #1\n"); 102 break; 103 case PLUM2_2: 104 printf(": Plum2 #2\n"); 105 break; 106 } 107 if (!(sc->sc_pc = malloc(sizeof(struct plum_chipset_tag), 108 M_DEVBUF, M_NOWAIT))) { 109 panic("no memory"); 110 } 111 memset(sc->sc_pc, 0, sizeof(struct plum_chipset_tag)); 112 sc->sc_pc->pc_tc = ca->ca_tc; 113 114 /* Attach Plum devices */ 115 /* 116 * interrupt, power/clock module is used by other plum module. 117 * attach first. 118 */ 119 sc->sc_pri = 2; 120 config_search_ia(plum_search, self, "plumif", plum_print); 121 /* 122 * Other plum module. 123 */ 124 sc->sc_pri = 1; 125 config_search_ia(plum_search, self, "plumif", plum_print); 126 } 127 128 plumreg_t 129 plum_idcheck(bus_space_tag_t regt) 130 { 131 bus_space_handle_t regh; 132 plumreg_t reg; 133 134 if (bus_space_map(regt, PLUM_ID_REGBASE, 135 PLUM_ID_REGSIZE, 0, ®h)) { 136 printf("ID register map failed\n"); 137 return (0); 138 } 139 reg = plum_conf_read(regt, regh, PLUM_ID_REG); 140 bus_space_unmap(regt, regh, PLUM_ID_REGSIZE); 141 142 return (reg); 143 } 144 145 int 146 plum_print(void *aux, const char *pnp) 147 { 148 149 return (pnp ? QUIET : UNCONF); 150 } 151 152 int 153 plum_search(struct device *parent, struct cfdata *cf, 154 const int *ldesc, void *aux) 155 { 156 struct plum_softc *sc = (void*)parent; 157 struct plum_attach_args pa; 158 159 pa.pa_pc = sc->sc_pc; 160 pa.pa_regt = sc->sc_csregt; 161 pa.pa_iot = sc->sc_csiot; 162 pa.pa_memt = sc->sc_csmemt; 163 pa.pa_irq = sc->sc_irq; 164 165 if (config_match(parent, cf, &pa) == sc->sc_pri) { 166 config_attach(parent, cf, &pa, plum_print); 167 } 168 169 return 0; 170 } 171 172 plumreg_t 173 plum_conf_read(bus_space_tag_t t, bus_space_handle_t h, int o) 174 { 175 plumreg_t reg; 176 177 reg = bus_space_read_4(t, h, o); 178 179 return (reg); 180 } 181 182 void 183 plum_conf_write(bus_space_tag_t t, bus_space_handle_t h, int o, plumreg_t v) 184 { 185 186 bus_space_write_4(t, h, o, v); 187 } 188 189 void 190 plum_conf_register_intr(plum_chipset_tag_t t, void *intrt) 191 { 192 193 if (t->pc_intrt) { 194 panic("duplicate intrt"); 195 } 196 197 t->pc_intrt = intrt; 198 } 199 200 void 201 plum_conf_register_power(plum_chipset_tag_t t, void *powert) 202 { 203 204 if (t->pc_powert) { 205 panic("duplicate powert"); 206 } 207 208 t->pc_powert = powert; 209 } 210
Indexes created Tue Oct 07 21:09:53 GMT 2025