fhc.c revision 1.8
1 /* $NetBSD: fhc.c,v 1.8 2021/04/24 23:36:49 thorpej 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 (at) 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/cdefs.h> 31 __KERNEL_RCSID(0, "$NetBSD: fhc.c,v 1.8 2021/04/24 23:36:49 thorpej Exp $"); 32 33 #include <sys/types.h> 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #include <sys/device.h> 38 #include <sys/conf.h> 39 #include <sys/malloc.h> 40 #include <sys/kmem.h> 41 #include <sys/bus.h> 42 43 #include <machine/autoconf.h> 44 #include <machine/openfirm.h> 45 46 #include <sparc64/dev/fhcreg.h> 47 #include <sparc64/dev/fhcvar.h> 48 #include <sparc64/dev/iommureg.h> 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_addr_t, bus_size_t, int, vaddr_t, 54 bus_space_handle_t *); 55 void *fhc_intr_establish(bus_space_tag_t, int, int, 56 int (*)(void *), void *, void (*)(void)); 57 bus_space_handle_t *fhc_find_intr_handle(struct fhc_softc *, 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 prom_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 prom_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 0 99 if (!checkstatus(node)) 100 continue; 101 #endif 102 103 bzero(&fa, sizeof(fa)); 104 105 fa.fa_node = node; 106 fa.fa_bustag = sc->sc_cbt; 107 108 if (fhc_get_string(fa.fa_node, "name", &fa.fa_name)) { 109 printf("can't fetch name for node 0x%x\n", node); 110 continue; 111 } 112 prom_getprop(node, "reg", sizeof(struct fhc_reg), 113 &fa.fa_nreg, (void **)&fa.fa_reg); 114 prom_getprop(node, "interrupts", sizeof(int), 115 &fa.fa_nintr, (void **)&fa.fa_intr); 116 prom_getprop(node, "address", sizeof(*fa.fa_promvaddrs), 117 &fa.fa_npromvaddrs, (void **)&fa.fa_promvaddrs); 118 119 (void)config_found(sc->sc_dev, (void *)&fa, fhc_print, 120 CFARG_EOL); 121 122 if (fa.fa_name != NULL) 123 free(fa.fa_name, M_DEVBUF); 124 if (fa.fa_reg != NULL) 125 free(fa.fa_reg, M_DEVBUF); 126 if (fa.fa_intr != NULL) 127 free(fa.fa_intr, M_DEVBUF); 128 if (fa.fa_promvaddrs != NULL) 129 free(fa.fa_promvaddrs, M_DEVBUF); 130 } 131 } 132 133 int 134 fhc_print(void *args, const char *busname) 135 { 136 struct fhc_attach_args *fa = args; 137 char *class; 138 139 if (busname != NULL) { 140 printf("\"%s\" at %s", fa->fa_name, busname); 141 class = prom_getpropstring(fa->fa_node, "device_type"); 142 if (*class != '\0') 143 printf(" class %s", class); 144 } 145 return (UNCONF); 146 } 147 148 int 149 fhc_get_string(int node, const char *name, char **buf) 150 { 151 int len; 152 153 len = prom_getproplen(node, name); 154 if (len < 0) 155 return (len); 156 *buf = (char *)malloc(len + 1, M_DEVBUF, M_WAITOK); 157 if (len != 0) 158 prom_getpropstringA(node, name, *buf, len + 1); 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 = kmem_zalloc(sizeof(*bt), KM_SLEEP); 169 bt->cookie = sc; 170 bt->parent = sc->sc_bt; 171 bt->type = 0; /* XXX asi? */ 172 bt->sparc_bus_map = _fhc_bus_map; 173 /* XXX bt->sparc_bus_mmap = fhc_bus_mmap; */ 174 bt->sparc_intr_establish = fhc_intr_establish; 175 return (bt); 176 } 177 178 int 179 _fhc_bus_map(bus_space_tag_t t, bus_addr_t addr, bus_size_t size, 180 int flags, vaddr_t unused, bus_space_handle_t *hp) 181 { 182 struct fhc_softc *sc = t->cookie; 183 int64_t slot = BUS_ADDR_IOSPACE(addr); 184 int64_t offset = BUS_ADDR_PADDR(addr); 185 int i; 186 187 if (t->parent == NULL || t->parent->sparc_bus_map == NULL) { 188 printf("\n_fhc_bus_map: invalid parent"); 189 return (EINVAL); 190 } 191 192 for (i = 0; i < sc->sc_nrange; i++) { 193 bus_addr_t paddr; 194 195 if (sc->sc_range[i].cspace != slot) 196 continue; 197 198 paddr = offset - sc->sc_range[i].coffset; 199 paddr += sc->sc_range[i].poffset; 200 paddr |= ((bus_addr_t)sc->sc_range[i].pspace << 32); 201 202 return bus_space_map(t->parent, paddr, size, flags, hp); 203 } 204 205 return (EINVAL); 206 } 207 208 bus_space_handle_t * 209 fhc_find_intr_handle(struct fhc_softc *sc, int ino) 210 { 211 switch (FHC_INO(ino)) { 212 case FHC_F_INO: 213 return &sc->sc_freg; 214 case FHC_S_INO: 215 return &sc->sc_sreg; 216 case FHC_U_INO: 217 return &sc->sc_ureg; 218 case FHC_T_INO: 219 return &sc->sc_treg; 220 default: 221 break; 222 } 223 224 return (NULL); 225 } 226 227 void * 228 fhc_intr_establish(bus_space_tag_t t, int ihandle, int level, 229 int (*handler)(void *), void *arg, void (*fastvec)(void) /* ignored */) 230 { 231 struct fhc_softc *sc = t->cookie; 232 volatile u_int64_t *intrmapptr = NULL, *intrclrptr = NULL; 233 struct intrhand *ih; 234 long vec; 235 bus_space_handle_t *hp; 236 struct fhc_intr_reg *intrregs; 237 238 hp = fhc_find_intr_handle(sc, ihandle); 239 if (hp == NULL) { 240 printf(": can't find intr handle\n"); 241 return (NULL); 242 } 243 244 intrregs = bus_space_vaddr(sc->sc_bt, *hp); 245 intrmapptr = &intrregs->imap; 246 intrclrptr = &intrregs->iclr; 247 vec = ((sc->sc_ign << INTMAP_IGN_SHIFT) & INTMAP_IGN) | 248 INTINO(ihandle); 249 250 ih = intrhand_alloc(); 251 252 ih->ih_ivec = ihandle; 253 254 /* Register the map and clear intr registers */ 255 ih->ih_map = intrmapptr; 256 ih->ih_clr = intrclrptr; 257 258 ih->ih_fun = handler; 259 ih->ih_arg = arg; 260 ih->ih_pil = level; 261 ih->ih_number = vec; 262 263 intr_establish(ih->ih_pil, level != IPL_VM, ih); 264 265 /* 266 * XXXX --- we really should use bus_space for this. 267 */ 268 if (intrmapptr != NULL) { 269 u_int64_t r; 270 271 r = *intrmapptr; 272 r |= INTMAP_V | (CPU_UPAID << INTMAP_TID_SHIFT); 273 *intrmapptr = r; 274 r = *intrmapptr; 275 ih->ih_number |= r & INTMAP_INR; 276 } 277 278 return (ih); 279 } 280
Indexes created Thu Sep 25 16:09:42 GMT 2025