1 /* $OpenBSD: fhc.c,v 1.18 2011/04/07 15:30:16 miod Exp $ */ 2 3 /* 4 * Copyright (c) 2004 Jason L. Wright (jason@thought.net) 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 25 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/types.h> 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/kernel.h> 33 #include <sys/device.h> 34 #include <sys/conf.h> 35 #include <sys/timeout.h> 36 #include <sys/malloc.h> 37 38 #include <machine/bus.h> 39 #include <machine/autoconf.h> 40 #include <machine/openfirm.h> 41 42 #include <sparc64/dev/fhcreg.h> 43 #include <sparc64/dev/fhcvar.h> 44 #include <sparc64/dev/iommureg.h> 45 46 struct cfdriver fhc_cd = { 47 NULL, "fhc", DV_DULL 48 }; 49 50 int fhc_print(void *, const char *); 51 52 bus_space_tag_t fhc_alloc_bus_tag(struct fhc_softc *); 53 int _fhc_bus_map(bus_space_tag_t, bus_space_tag_t, bus_addr_t, bus_size_t, 54 int, bus_space_handle_t *); 55 void *fhc_intr_establish(bus_space_tag_t, bus_space_tag_t, int, int, int, 56 int (*)(void *), void *, const char *); 57 bus_space_handle_t *fhc_find_intr_handle(struct fhc_softc *, int); 58 void fhc_led_blink(void *, int); 59 60 void 61 fhc_attach(struct fhc_softc *sc) 62 { 63 int node0, node; 64 u_int32_t ctrl; 65 66 printf(" board %d: %s\n", sc->sc_board, 67 getpropstring(sc->sc_node, "board-model")); 68 69 sc->sc_cbt = fhc_alloc_bus_tag(sc); 70 71 sc->sc_ign = sc->sc_board << 1; 72 bus_space_write_4(sc->sc_bt, sc->sc_ireg, FHC_I_IGN, sc->sc_ign); 73 sc->sc_ign = bus_space_read_4(sc->sc_bt, sc->sc_ireg, FHC_I_IGN); 74 75 ctrl = bus_space_read_4(sc->sc_bt, sc->sc_preg, FHC_P_CTRL); 76 if (!sc->sc_is_central) 77 ctrl |= FHC_P_CTRL_IXIST; 78 ctrl &= ~(FHC_P_CTRL_AOFF | FHC_P_CTRL_BOFF | FHC_P_CTRL_SLINE); 79 bus_space_write_4(sc->sc_bt, sc->sc_preg, FHC_P_CTRL, ctrl); 80 bus_space_read_4(sc->sc_bt, sc->sc_preg, FHC_P_CTRL); 81 82 /* clear interrupts */ 83 bus_space_write_4(sc->sc_bt, sc->sc_freg, FHC_F_ICLR, 0); 84 bus_space_read_4(sc->sc_bt, sc->sc_freg, FHC_F_ICLR); 85 bus_space_write_4(sc->sc_bt, sc->sc_sreg, FHC_S_ICLR, 0); 86 bus_space_read_4(sc->sc_bt, sc->sc_sreg, FHC_S_ICLR); 87 bus_space_write_4(sc->sc_bt, sc->sc_ureg, FHC_U_ICLR, 0); 88 bus_space_read_4(sc->sc_bt, sc->sc_ureg, FHC_U_ICLR); 89 bus_space_write_4(sc->sc_bt, sc->sc_treg, FHC_T_ICLR, 0); 90 bus_space_read_4(sc->sc_bt, sc->sc_treg, FHC_T_ICLR); 91 92 getprop(sc->sc_node, "ranges", sizeof(struct fhc_range), 93 &sc->sc_nrange, (void **)&sc->sc_range); 94 95 node0 = firstchild(sc->sc_node); 96 for (node = node0; node; node = nextsibling(node)) { 97 struct fhc_attach_args fa; 98 99 if (!checkstatus(node)) 100 continue; 101 102 bzero(&fa, sizeof(fa)); 103 104 fa.fa_node = node; 105 fa.fa_bustag = sc->sc_cbt; 106 107 if (fhc_get_string(fa.fa_node, "name", &fa.fa_name)) { 108 printf("can't fetch name for node 0x%x\n", node); 109 continue; 110 } 111 getprop(node, "reg", sizeof(struct fhc_reg), 112 &fa.fa_nreg, (void **)&fa.fa_reg); 113 getprop(node, "interrupts", sizeof(int), 114 &fa.fa_nintr, (void **)&fa.fa_intr); 115 getprop(node, "address", sizeof(*fa.fa_promvaddrs), 116 &fa.fa_npromvaddrs, (void **)&fa.fa_promvaddrs); 117 118 (void)config_found(&sc->sc_dv, (void *)&fa, fhc_print); 119 120 if (fa.fa_name != NULL) 121 free(fa.fa_name, M_DEVBUF); 122 if (fa.fa_reg != NULL) 123 free(fa.fa_reg, M_DEVBUF); 124 if (fa.fa_intr != NULL) 125 free(fa.fa_intr, M_DEVBUF); 126 if (fa.fa_promvaddrs != NULL) 127 free(fa.fa_promvaddrs, M_DEVBUF); 128 } 129 130 sc->sc_blink.bl_func = fhc_led_blink; 131 sc->sc_blink.bl_arg = sc; 132 blink_led_register(&sc->sc_blink); 133 } 134 135 int 136 fhc_print(void *args, const char *busname) 137 { 138 struct fhc_attach_args *fa = args; 139 char *class; 140 141 if (busname != NULL) { 142 printf("\"%s\" at %s", fa->fa_name, busname); 143 class = getpropstring(fa->fa_node, "device_type"); 144 if (*class != '\0') 145 printf(" class %s", class); 146 } 147 return (UNCONF); 148 } 149 150 int 151 fhc_get_string(int node, char *name, char **buf) 152 { 153 int len; 154 155 len = getproplen(node, name); 156 if (len < 0) 157 return (len); 158 *buf = (char *)malloc(len + 1, M_DEVBUF, M_NOWAIT); 159 if (*buf == NULL) 160 return (-1); 161 162 if (len != 0) 163 getpropstringA(node, name, *buf); 164 (*buf)[len] = '\0'; 165 return (0); 166 } 167 168 bus_space_tag_t 169 fhc_alloc_bus_tag(struct fhc_softc *sc) 170 { 171 struct sparc_bus_space_tag *bt; 172 173 bt = malloc(sizeof(*bt), M_DEVBUF, M_NOWAIT | M_ZERO); 174 if (bt == NULL) 175 panic("fhc: couldn't alloc bus tag"); 176 177 strlcpy(bt->name, sc->sc_dv.dv_xname, sizeof(bt->name)); 178 bt->cookie = sc; 179 bt->parent = sc->sc_bt; 180 bt->asi = bt->parent->asi; 181 bt->sasi = bt->parent->sasi; 182 bt->sparc_bus_map = _fhc_bus_map; 183 /* XXX bt->sparc_bus_mmap = fhc_bus_mmap; */ 184 bt->sparc_intr_establish = fhc_intr_establish; 185 return (bt); 186 } 187 188 int 189 _fhc_bus_map(bus_space_tag_t t, bus_space_tag_t t0, bus_addr_t addr, 190 bus_size_t size, int flags, bus_space_handle_t *hp) 191 { 192 struct fhc_softc *sc = t->cookie; 193 int64_t slot = BUS_ADDR_IOSPACE(addr); 194 int64_t offset = BUS_ADDR_PADDR(addr); 195 int i; 196 197 if (t->parent == NULL || t->parent->sparc_bus_map == NULL) { 198 printf("\n_fhc_bus_map: invalid parent"); 199 return (EINVAL); 200 } 201 202 if (flags & BUS_SPACE_MAP_PROMADDRESS) 203 return ((*t->parent->sparc_bus_map)(t, t0, addr, 204 size, flags, hp)); 205 206 for (i = 0; i < sc->sc_nrange; i++) { 207 bus_addr_t paddr; 208 209 if (sc->sc_range[i].cspace != slot) 210 continue; 211 212 paddr = offset - sc->sc_range[i].coffset; 213 paddr += sc->sc_range[i].poffset; 214 paddr |= ((bus_addr_t)sc->sc_range[i].pspace << 32); 215 216 return ((*t->parent->sparc_bus_map)(t->parent, t0, paddr, 217 size, flags, hp)); 218 } 219 220 return (EINVAL); 221 } 222 223 bus_space_handle_t * 224 fhc_find_intr_handle(struct fhc_softc *sc, int ino) 225 { 226 switch (FHC_INO(ino)) { 227 case FHC_F_INO: 228 return &sc->sc_freg; 229 case FHC_S_INO: 230 return &sc->sc_sreg; 231 case FHC_U_INO: 232 return &sc->sc_ureg; 233 case FHC_T_INO: 234 return &sc->sc_treg; 235 default: 236 break; 237 } 238 239 return (NULL); 240 } 241 242 void * 243 fhc_intr_establish(bus_space_tag_t t, bus_space_tag_t t0, int ihandle, 244 int level, int flags, int (*handler)(void *), void *arg, const char *what) 245 { 246 struct fhc_softc *sc = t->cookie; 247 volatile u_int64_t *intrmapptr = NULL, *intrclrptr = NULL; 248 struct intrhand *ih; 249 long vec; 250 251 if (level == IPL_NONE) 252 level = INTLEV(ihandle); 253 if (level == IPL_NONE) { 254 printf(": no IPL, setting IPL 2.\n"); 255 level = 2; 256 } 257 258 if ((flags & BUS_INTR_ESTABLISH_SOFTINTR) == 0) { 259 bus_space_handle_t *hp; 260 struct fhc_intr_reg *intrregs; 261 262 hp = fhc_find_intr_handle(sc, ihandle); 263 if (hp == NULL) { 264 printf(": can't find intr handle\n"); 265 return (NULL); 266 } 267 268 intrregs = bus_space_vaddr(sc->sc_bt, *hp); 269 intrmapptr = &intrregs->imap; 270 intrclrptr = &intrregs->iclr; 271 vec = ((sc->sc_ign << INTMAP_IGN_SHIFT) & INTMAP_IGN) | 272 INTINO(ihandle); 273 } else 274 vec = INTVEC(ihandle); 275 276 ih = bus_intr_allocate(t0, handler, arg, vec, level, intrmapptr, 277 intrclrptr, what); 278 if (ih == NULL) 279 return (NULL); 280 281 intr_establish(ih->ih_pil, ih); 282 283 if (intrmapptr != NULL) { 284 u_int64_t r; 285 286 r = *intrmapptr; 287 r |= INTMAP_V; 288 *intrmapptr = r; 289 r = *intrmapptr; 290 ih->ih_number |= r & INTMAP_INR; 291 } 292 293 return (ih); 294 } 295 296 void 297 fhc_led_blink(void *vsc, int on) 298 { 299 struct fhc_softc *sc = vsc; 300 int s; 301 u_int32_t r; 302 303 s = splhigh(); 304 r = bus_space_read_4(sc->sc_bt, sc->sc_preg, FHC_P_CTRL); 305 if (on) 306 r |= FHC_P_CTRL_RLED; 307 else 308 r &= ~FHC_P_CTRL_RLED; 309 r &= ~(FHC_P_CTRL_AOFF | FHC_P_CTRL_BOFF | FHC_P_CTRL_SLINE); 310 bus_space_write_4(sc->sc_bt, sc->sc_preg, FHC_P_CTRL, r); 311 bus_space_read_4(sc->sc_bt, sc->sc_preg, FHC_P_CTRL); 312 splx(s); 313 } 314