1 /* $NetBSD: fhc.c,v 1.2 2011/08/12 08:24:01 jdc Exp $ */ 2 /* $OpenBSD: fhc.c,v 1.17 2010/11/11 17:58:23 miod Exp $ */ 3 4 /* 5 * Copyright (c) 2004 Jason L. Wright (jason@thought.net) 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 21 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 26 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include <sys/types.h> 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/kernel.h> 34 #include <sys/device.h> 35 #include <sys/conf.h> 36 #include <sys/malloc.h> 37 #include <sys/bus.h> 38 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 int fhc_print(void *, const char *); 47 48 bus_space_tag_t fhc_alloc_bus_tag(struct fhc_softc *); 49 int _fhc_bus_map(bus_space_tag_t, bus_addr_t, bus_size_t, int, vaddr_t, 50 bus_space_handle_t *); 51 void *fhc_intr_establish(bus_space_tag_t, int, int, 52 int (*)(void *), void *, void (*)(void)); 53 bus_space_handle_t *fhc_find_intr_handle(struct fhc_softc *, int); 54 55 void 56 fhc_attach(struct fhc_softc *sc) 57 { 58 int node0, node; 59 u_int32_t ctrl; 60 61 printf(" board %d: %s\n", sc->sc_board, 62 prom_getpropstring(sc->sc_node, "board-model")); 63 64 sc->sc_cbt = fhc_alloc_bus_tag(sc); 65 66 sc->sc_ign = sc->sc_board << 1; 67 bus_space_write_4(sc->sc_bt, sc->sc_ireg, FHC_I_IGN, sc->sc_ign); 68 sc->sc_ign = bus_space_read_4(sc->sc_bt, sc->sc_ireg, FHC_I_IGN); 69 70 ctrl = bus_space_read_4(sc->sc_bt, sc->sc_preg, FHC_P_CTRL); 71 if (!sc->sc_is_central) 72 ctrl |= FHC_P_CTRL_IXIST; 73 ctrl &= ~(FHC_P_CTRL_AOFF | FHC_P_CTRL_BOFF | FHC_P_CTRL_SLINE); 74 bus_space_write_4(sc->sc_bt, sc->sc_preg, FHC_P_CTRL, ctrl); 75 bus_space_read_4(sc->sc_bt, sc->sc_preg, FHC_P_CTRL); 76 77 /* clear interrupts */ 78 bus_space_write_4(sc->sc_bt, sc->sc_freg, FHC_F_ICLR, 0); 79 bus_space_read_4(sc->sc_bt, sc->sc_freg, FHC_F_ICLR); 80 bus_space_write_4(sc->sc_bt, sc->sc_sreg, FHC_S_ICLR, 0); 81 bus_space_read_4(sc->sc_bt, sc->sc_sreg, FHC_S_ICLR); 82 bus_space_write_4(sc->sc_bt, sc->sc_ureg, FHC_U_ICLR, 0); 83 bus_space_read_4(sc->sc_bt, sc->sc_ureg, FHC_U_ICLR); 84 bus_space_write_4(sc->sc_bt, sc->sc_treg, FHC_T_ICLR, 0); 85 bus_space_read_4(sc->sc_bt, sc->sc_treg, FHC_T_ICLR); 86 87 prom_getprop(sc->sc_node, "ranges", sizeof(struct fhc_range), 88 &sc->sc_nrange, (void **)&sc->sc_range); 89 90 node0 = firstchild(sc->sc_node); 91 for (node = node0; node; node = nextsibling(node)) { 92 struct fhc_attach_args fa; 93 94 #if 0 95 if (!checkstatus(node)) 96 continue; 97 #endif 98 99 bzero(&fa, sizeof(fa)); 100 101 fa.fa_node = node; 102 fa.fa_bustag = sc->sc_cbt; 103 104 if (fhc_get_string(fa.fa_node, "name", &fa.fa_name)) { 105 printf("can't fetch name for node 0x%x\n", node); 106 continue; 107 } 108 prom_getprop(node, "reg", sizeof(struct fhc_reg), 109 &fa.fa_nreg, (void **)&fa.fa_reg); 110 prom_getprop(node, "interrupts", sizeof(int), 111 &fa.fa_nintr, (void **)&fa.fa_intr); 112 prom_getprop(node, "address", sizeof(*fa.fa_promvaddrs), 113 &fa.fa_npromvaddrs, (void **)&fa.fa_promvaddrs); 114 115 (void)config_found(sc->sc_dev, (void *)&fa, fhc_print); 116 117 if (fa.fa_name != NULL) 118 free(fa.fa_name, M_DEVBUF); 119 if (fa.fa_reg != NULL) 120 free(fa.fa_reg, M_DEVBUF); 121 if (fa.fa_intr != NULL) 122 free(fa.fa_intr, M_DEVBUF); 123 if (fa.fa_promvaddrs != NULL) 124 free(fa.fa_promvaddrs, M_DEVBUF); 125 } 126 } 127 128 int 129 fhc_print(void *args, const char *busname) 130 { 131 struct fhc_attach_args *fa = args; 132 char *class; 133 134 if (busname != NULL) { 135 printf("\"%s\" at %s", fa->fa_name, busname); 136 class = prom_getpropstring(fa->fa_node, "device_type"); 137 if (*class != '\0') 138 printf(" class %s", class); 139 } 140 return (UNCONF); 141 } 142 143 int 144 fhc_get_string(int node, const char *name, char **buf) 145 { 146 int len; 147 148 len = prom_getproplen(node, name); 149 if (len < 0) 150 return (len); 151 *buf = (char *)malloc(len + 1, M_DEVBUF, M_NOWAIT); 152 if (*buf == NULL) 153 return (-1); 154 155 if (len != 0) 156 prom_getpropstringA(node, name, *buf, len + 1); 157 (*buf)[len] = '\0'; 158 return (0); 159 } 160 161 bus_space_tag_t 162 fhc_alloc_bus_tag(struct fhc_softc *sc) 163 { 164 struct sparc_bus_space_tag *bt; 165 166 bt = malloc(sizeof(*bt), M_DEVBUF, M_NOWAIT | M_ZERO); 167 if (bt == NULL) 168 panic("fhc: couldn't alloc bus tag"); 169 170 bt->cookie = sc; 171 bt->parent = sc->sc_bt; 172 bt->type = 0; /* XXX asi? */ 173 bt->sparc_bus_map = _fhc_bus_map; 174 /* XXX bt->sparc_bus_mmap = fhc_bus_mmap; */ 175 bt->sparc_intr_establish = fhc_intr_establish; 176 return (bt); 177 } 178 179 int 180 _fhc_bus_map(bus_space_tag_t t, bus_addr_t addr, bus_size_t size, 181 int flags, vaddr_t unused, bus_space_handle_t *hp) 182 { 183 struct fhc_softc *sc = t->cookie; 184 int64_t slot = BUS_ADDR_IOSPACE(addr); 185 int64_t offset = BUS_ADDR_PADDR(addr); 186 int i; 187 188 if (t->parent == NULL || t->parent->sparc_bus_map == NULL) { 189 printf("\n_fhc_bus_map: invalid parent"); 190 return (EINVAL); 191 } 192 193 for (i = 0; i < sc->sc_nrange; i++) { 194 bus_addr_t paddr; 195 196 if (sc->sc_range[i].cspace != slot) 197 continue; 198 199 paddr = offset - sc->sc_range[i].coffset; 200 paddr += sc->sc_range[i].poffset; 201 paddr |= ((bus_addr_t)sc->sc_range[i].pspace << 32); 202 203 return bus_space_map(t->parent, paddr, size, flags, hp); 204 } 205 206 return (EINVAL); 207 } 208 209 bus_space_handle_t * 210 fhc_find_intr_handle(struct fhc_softc *sc, int ino) 211 { 212 switch (FHC_INO(ino)) { 213 case FHC_F_INO: 214 return &sc->sc_freg; 215 case FHC_S_INO: 216 return &sc->sc_sreg; 217 case FHC_U_INO: 218 return &sc->sc_ureg; 219 case FHC_T_INO: 220 return &sc->sc_treg; 221 default: 222 break; 223 } 224 225 return (NULL); 226 } 227 228 void * 229 fhc_intr_establish(bus_space_tag_t t, int ihandle, int level, 230 int (*handler)(void *), void *arg, void (*fastvec)(void) /* ignored */) 231 { 232 struct fhc_softc *sc = t->cookie; 233 volatile u_int64_t *intrmapptr = NULL, *intrclrptr = NULL; 234 struct intrhand *ih; 235 long vec; 236 bus_space_handle_t *hp; 237 struct fhc_intr_reg *intrregs; 238 239 hp = fhc_find_intr_handle(sc, ihandle); 240 if (hp == NULL) { 241 printf(": can't find intr handle\n"); 242 return (NULL); 243 } 244 245 intrregs = bus_space_vaddr(sc->sc_bt, *hp); 246 intrmapptr = &intrregs->imap; 247 intrclrptr = &intrregs->iclr; 248 vec = ((sc->sc_ign << INTMAP_IGN_SHIFT) & INTMAP_IGN) | 249 INTINO(ihandle); 250 251 ih = (struct intrhand *) 252 malloc(sizeof(struct intrhand), M_DEVBUF, M_NOWAIT); 253 if (ih == NULL) 254 return (NULL); 255 256 ih->ih_ivec = ihandle; 257 258 /* Register the map and clear intr registers */ 259 ih->ih_map = intrmapptr; 260 ih->ih_clr = intrclrptr; 261 262 ih->ih_fun = handler; 263 ih->ih_arg = arg; 264 ih->ih_pil = level; 265 ih->ih_number = vec; 266 267 intr_establish(ih->ih_pil, level != IPL_VM, ih); 268 269 /* 270 * XXXX --- we really should use bus_space for this. 271 */ 272 if (intrmapptr != NULL) { 273 u_int64_t r; 274 275 r = *intrmapptr; 276 r |= INTMAP_V | (CPU_UPAID << INTMAP_TID_SHIFT); 277 *intrmapptr = r; 278 r = *intrmapptr; 279 ih->ih_number |= r & INTMAP_INR; 280 } 281 282 return (ih); 283 } 284