1 /* $OpenBSD: fhc.c,v 1.21 2017/09/08 05:36:52 deraadt 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/param.h> 30 #include <sys/systm.h> 31 #include <sys/kernel.h> 32 #include <sys/device.h> 33 #include <sys/conf.h> 34 #include <sys/timeout.h> 35 #include <sys/malloc.h> 36 37 #include <machine/bus.h> 38 #include <machine/autoconf.h> 39 #include <machine/openfirm.h> 40 41 #include <sparc64/dev/fhcreg.h> 42 #include <sparc64/dev/fhcvar.h> 43 #include <sparc64/dev/iommureg.h> 44 45 struct cfdriver fhc_cd = { 46 NULL, "fhc", DV_DULL 47 }; 48 49 int fhc_print(void *, const char *); 50 51 bus_space_tag_t fhc_alloc_bus_tag(struct fhc_softc *); 52 int _fhc_bus_map(bus_space_tag_t, bus_space_tag_t, bus_addr_t, bus_size_t, 53 int, bus_space_handle_t *); 54 void *fhc_intr_establish(bus_space_tag_t, bus_space_tag_t, int, int, int, 55 int (*)(void *), void *, const char *); 56 bus_space_handle_t *fhc_find_intr_handle(struct fhc_softc *, int); 57 void fhc_led_blink(void *, int); 58 59 void 60 fhc_attach(struct fhc_softc *sc) 61 { 62 int node0, node; 63 u_int32_t ctrl; 64 65 printf(" board %d: %s\n", sc->sc_board, 66 getpropstring(sc->sc_node, "board-model")); 67 68 sc->sc_cbt = fhc_alloc_bus_tag(sc); 69 70 sc->sc_ign = sc->sc_board << 1; 71 bus_space_write_4(sc->sc_bt, sc->sc_ireg, FHC_I_IGN, sc->sc_ign); 72 sc->sc_ign = bus_space_read_4(sc->sc_bt, sc->sc_ireg, FHC_I_IGN); 73 74 ctrl = bus_space_read_4(sc->sc_bt, sc->sc_preg, FHC_P_CTRL); 75 if (!sc->sc_is_central) 76 ctrl |= FHC_P_CTRL_IXIST; 77 ctrl &= ~(FHC_P_CTRL_AOFF | FHC_P_CTRL_BOFF | FHC_P_CTRL_SLINE); 78 bus_space_write_4(sc->sc_bt, sc->sc_preg, FHC_P_CTRL, ctrl); 79 bus_space_read_4(sc->sc_bt, sc->sc_preg, FHC_P_CTRL); 80 81 /* clear interrupts */ 82 bus_space_write_4(sc->sc_bt, sc->sc_freg, FHC_F_ICLR, 0); 83 bus_space_read_4(sc->sc_bt, sc->sc_freg, FHC_F_ICLR); 84 bus_space_write_4(sc->sc_bt, sc->sc_sreg, FHC_S_ICLR, 0); 85 bus_space_read_4(sc->sc_bt, sc->sc_sreg, FHC_S_ICLR); 86 bus_space_write_4(sc->sc_bt, sc->sc_ureg, FHC_U_ICLR, 0); 87 bus_space_read_4(sc->sc_bt, sc->sc_ureg, FHC_U_ICLR); 88 bus_space_write_4(sc->sc_bt, sc->sc_treg, FHC_T_ICLR, 0); 89 bus_space_read_4(sc->sc_bt, sc->sc_treg, FHC_T_ICLR); 90 91 getprop(sc->sc_node, "ranges", sizeof(struct fhc_range), 92 &sc->sc_nrange, (void **)&sc->sc_range); 93 94 node0 = firstchild(sc->sc_node); 95 for (node = node0; node; node = nextsibling(node)) { 96 struct fhc_attach_args fa; 97 98 if (!checkstatus(node)) 99 continue; 100 101 bzero(&fa, sizeof(fa)); 102 103 fa.fa_node = node; 104 fa.fa_bustag = sc->sc_cbt; 105 106 if (fhc_get_string(fa.fa_node, "name", &fa.fa_name)) { 107 printf("can't fetch name for node 0x%x\n", node); 108 continue; 109 } 110 getprop(node, "reg", sizeof(struct fhc_reg), 111 &fa.fa_nreg, (void **)&fa.fa_reg); 112 getprop(node, "interrupts", sizeof(int), 113 &fa.fa_nintr, (void **)&fa.fa_intr); 114 getprop(node, "address", sizeof(*fa.fa_promvaddrs), 115 &fa.fa_npromvaddrs, (void **)&fa.fa_promvaddrs); 116 117 (void)config_found(&sc->sc_dv, (void *)&fa, fhc_print); 118 119 free(fa.fa_name, M_DEVBUF, 0); 120 free(fa.fa_reg, M_DEVBUF, 0); 121 free(fa.fa_intr, M_DEVBUF, 0); 122 free(fa.fa_promvaddrs, M_DEVBUF, 0); 123 } 124 125 sc->sc_blink.bl_func = fhc_led_blink; 126 sc->sc_blink.bl_arg = sc; 127 blink_led_register(&sc->sc_blink); 128 } 129 130 int 131 fhc_print(void *args, const char *busname) 132 { 133 struct fhc_attach_args *fa = args; 134 char *class; 135 136 if (busname != NULL) { 137 printf("\"%s\" at %s", fa->fa_name, busname); 138 class = getpropstring(fa->fa_node, "device_type"); 139 if (*class != '\0') 140 printf(" class %s", class); 141 } 142 return (UNCONF); 143 } 144 145 int 146 fhc_get_string(int node, char *name, char **buf) 147 { 148 int len; 149 150 len = getproplen(node, name); 151 if (len < 0) 152 return (len); 153 *buf = (char *)malloc(len + 1, M_DEVBUF, M_NOWAIT); 154 if (*buf == NULL) 155 return (-1); 156 157 if (len != 0) 158 getpropstringA(node, name, *buf); 159 (*buf)[len] = '\0'; 160 return (0); 161 } 162 163 bus_space_tag_t 164 fhc_alloc_bus_tag(struct fhc_softc *sc) 165 { 166 struct sparc_bus_space_tag *bt; 167 168 bt = malloc(sizeof(*bt), M_DEVBUF, M_NOWAIT | M_ZERO); 169 if (bt == NULL) 170 panic("fhc: couldn't alloc bus tag"); 171 172 strlcpy(bt->name, sc->sc_dv.dv_xname, sizeof(bt->name)); 173 bt->cookie = sc; 174 bt->parent = sc->sc_bt; 175 bt->asi = bt->parent->asi; 176 bt->sasi = bt->parent->sasi; 177 bt->sparc_bus_map = _fhc_bus_map; 178 /* XXX bt->sparc_bus_mmap = fhc_bus_mmap; */ 179 bt->sparc_intr_establish = fhc_intr_establish; 180 return (bt); 181 } 182 183 int 184 _fhc_bus_map(bus_space_tag_t t, bus_space_tag_t t0, bus_addr_t addr, 185 bus_size_t size, int flags, bus_space_handle_t *hp) 186 { 187 struct fhc_softc *sc = t->cookie; 188 int64_t slot = BUS_ADDR_IOSPACE(addr); 189 int64_t offset = BUS_ADDR_PADDR(addr); 190 int i; 191 192 if (t->parent == NULL || t->parent->sparc_bus_map == NULL) { 193 printf("\n_fhc_bus_map: invalid parent"); 194 return (EINVAL); 195 } 196 197 if (flags & BUS_SPACE_MAP_PROMADDRESS) 198 return ((*t->parent->sparc_bus_map)(t, t0, addr, 199 size, flags, hp)); 200 201 for (i = 0; i < sc->sc_nrange; i++) { 202 bus_addr_t paddr; 203 204 if (sc->sc_range[i].cspace != slot) 205 continue; 206 207 paddr = offset - sc->sc_range[i].coffset; 208 paddr += sc->sc_range[i].poffset; 209 paddr |= ((bus_addr_t)sc->sc_range[i].pspace << 32); 210 211 return ((*t->parent->sparc_bus_map)(t->parent, t0, paddr, 212 size, flags, hp)); 213 } 214 215 return (EINVAL); 216 } 217 218 bus_space_handle_t * 219 fhc_find_intr_handle(struct fhc_softc *sc, int ino) 220 { 221 switch (FHC_INO(ino)) { 222 case FHC_F_INO: 223 return &sc->sc_freg; 224 case FHC_S_INO: 225 return &sc->sc_sreg; 226 case FHC_U_INO: 227 return &sc->sc_ureg; 228 case FHC_T_INO: 229 return &sc->sc_treg; 230 default: 231 break; 232 } 233 234 return (NULL); 235 } 236 237 void * 238 fhc_intr_establish(bus_space_tag_t t, bus_space_tag_t t0, int ihandle, 239 int level, int flags, int (*handler)(void *), void *arg, const char *what) 240 { 241 struct fhc_softc *sc = t->cookie; 242 volatile u_int64_t *intrmapptr = NULL, *intrclrptr = NULL; 243 struct intrhand *ih; 244 long vec; 245 246 if (level == IPL_NONE) 247 level = INTLEV(ihandle); 248 if (level == IPL_NONE) { 249 printf(": no IPL, setting IPL 2.\n"); 250 level = 2; 251 } 252 253 if ((flags & BUS_INTR_ESTABLISH_SOFTINTR) == 0) { 254 bus_space_handle_t *hp; 255 struct fhc_intr_reg *intrregs; 256 257 hp = fhc_find_intr_handle(sc, ihandle); 258 if (hp == NULL) { 259 printf(": can't find intr handle\n"); 260 return (NULL); 261 } 262 263 intrregs = bus_space_vaddr(sc->sc_bt, *hp); 264 intrmapptr = &intrregs->imap; 265 intrclrptr = &intrregs->iclr; 266 vec = ((sc->sc_ign << INTMAP_IGN_SHIFT) & INTMAP_IGN) | 267 INTINO(ihandle); 268 } else 269 vec = INTVEC(ihandle); 270 271 ih = bus_intr_allocate(t0, handler, arg, vec, level, intrmapptr, 272 intrclrptr, what); 273 if (ih == NULL) 274 return (NULL); 275 276 intr_establish(ih->ih_pil, ih); 277 278 if (intrmapptr != NULL) { 279 u_int64_t r; 280 281 r = *intrmapptr; 282 r |= INTMAP_V; 283 *intrmapptr = r; 284 r = *intrmapptr; 285 ih->ih_number |= r & INTMAP_INR; 286 } 287 288 return (ih); 289 } 290 291 void 292 fhc_led_blink(void *vsc, int on) 293 { 294 struct fhc_softc *sc = vsc; 295 int s; 296 u_int32_t r; 297 298 s = splhigh(); 299 r = bus_space_read_4(sc->sc_bt, sc->sc_preg, FHC_P_CTRL); 300 if (on) 301 r |= FHC_P_CTRL_RLED; 302 else 303 r &= ~FHC_P_CTRL_RLED; 304 r &= ~(FHC_P_CTRL_AOFF | FHC_P_CTRL_BOFF | FHC_P_CTRL_SLINE); 305 bus_space_write_4(sc->sc_bt, sc->sc_preg, FHC_P_CTRL, r); 306 bus_space_read_4(sc->sc_bt, sc->sc_preg, FHC_P_CTRL); 307 splx(s); 308 } 309