fhc.c revision 1.5.18.1
1 /* $NetBSD: fhc.c,v 1.5.18.1 2020/04/13 08:04:08 martin 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 1.5.18.1 2020/04/13 08:04:08 martin 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/bus.h> 41 42 #include <machine/autoconf.h> 43 #include <machine/openfirm.h> 44 45 #include <sparc64/dev/fhcreg.h> 46 #include <sparc64/dev/fhcvar.h> 47 #include <sparc64/dev/iommureg.h> 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_addr_t, bus_size_t, int, vaddr_t, 53 bus_space_handle_t *); 54 void *fhc_intr_establish(bus_space_tag_t, int, int, 55 int (*)(void *), void *, void (*)(void)); 56 bus_space_handle_t *fhc_find_intr_handle(struct fhc_softc *, int); 57 58 void 59 fhc_attach(struct fhc_softc *sc) 60 { 61 int node0, node; 62 u_int32_t ctrl; 63 64 printf(" board %d: %s\n", sc->sc_board, 65 prom_getpropstring(sc->sc_node, "board-model")); 66 67 sc->sc_cbt = fhc_alloc_bus_tag(sc); 68 69 sc->sc_ign = sc->sc_board << 1; 70 bus_space_write_4(sc->sc_bt, sc->sc_ireg, FHC_I_IGN, sc->sc_ign); 71 sc->sc_ign = bus_space_read_4(sc->sc_bt, sc->sc_ireg, FHC_I_IGN); 72 73 ctrl = bus_space_read_4(sc->sc_bt, sc->sc_preg, FHC_P_CTRL); 74 if (!sc->sc_is_central) 75 ctrl |= FHC_P_CTRL_IXIST; 76 ctrl &= ~(FHC_P_CTRL_AOFF | FHC_P_CTRL_BOFF | FHC_P_CTRL_SLINE); 77 bus_space_write_4(sc->sc_bt, sc->sc_preg, FHC_P_CTRL, ctrl); 78 bus_space_read_4(sc->sc_bt, sc->sc_preg, FHC_P_CTRL); 79 80 /* clear interrupts */ 81 bus_space_write_4(sc->sc_bt, sc->sc_freg, FHC_F_ICLR, 0); 82 bus_space_read_4(sc->sc_bt, sc->sc_freg, FHC_F_ICLR); 83 bus_space_write_4(sc->sc_bt, sc->sc_sreg, FHC_S_ICLR, 0); 84 bus_space_read_4(sc->sc_bt, sc->sc_sreg, FHC_S_ICLR); 85 bus_space_write_4(sc->sc_bt, sc->sc_ureg, FHC_U_ICLR, 0); 86 bus_space_read_4(sc->sc_bt, sc->sc_ureg, FHC_U_ICLR); 87 bus_space_write_4(sc->sc_bt, sc->sc_treg, FHC_T_ICLR, 0); 88 bus_space_read_4(sc->sc_bt, sc->sc_treg, FHC_T_ICLR); 89 90 prom_getprop(sc->sc_node, "ranges", sizeof(struct fhc_range), 91 &sc->sc_nrange, (void **)&sc->sc_range); 92 93 node0 = firstchild(sc->sc_node); 94 for (node = node0; node; node = nextsibling(node)) { 95 struct fhc_attach_args fa; 96 97 #if 0 98 if (!checkstatus(node)) 99 continue; 100 #endif 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 prom_getprop(node, "reg", sizeof(struct fhc_reg), 112 &fa.fa_nreg, (void **)&fa.fa_reg); 113 prom_getprop(node, "interrupts", sizeof(int), 114 &fa.fa_nintr, (void **)&fa.fa_intr); 115 prom_getprop(node, "address", sizeof(*fa.fa_promvaddrs), 116 &fa.fa_npromvaddrs, (void **)&fa.fa_promvaddrs); 117 118 (void)config_found(sc->sc_dev, (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 } 130 131 int 132 fhc_print(void *args, const char *busname) 133 { 134 struct fhc_attach_args *fa = args; 135 char *class; 136 137 if (busname != NULL) { 138 printf("\"%s\" at %s", fa->fa_name, busname); 139 class = prom_getpropstring(fa->fa_node, "device_type"); 140 if (*class != '\0') 141 printf(" class %s", class); 142 } 143 return (UNCONF); 144 } 145 146 int 147 fhc_get_string(int node, const char *name, char **buf) 148 { 149 int len; 150 151 len = prom_getproplen(node, name); 152 if (len < 0) 153 return (len); 154 *buf = (char *)malloc(len + 1, M_DEVBUF, M_WAITOK); 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_WAITOK | M_ZERO); 167 bt->cookie = sc; 168 bt->parent = sc->sc_bt; 169 bt->type = 0; /* XXX asi? */ 170 bt->sparc_bus_map = _fhc_bus_map; 171 /* XXX bt->sparc_bus_mmap = fhc_bus_mmap; */ 172 bt->sparc_intr_establish = fhc_intr_establish; 173 return (bt); 174 } 175 176 int 177 _fhc_bus_map(bus_space_tag_t t, bus_addr_t addr, bus_size_t size, 178 int flags, vaddr_t unused, bus_space_handle_t *hp) 179 { 180 struct fhc_softc *sc = t->cookie; 181 int64_t slot = BUS_ADDR_IOSPACE(addr); 182 int64_t offset = BUS_ADDR_PADDR(addr); 183 int i; 184 185 if (t->parent == NULL || t->parent->sparc_bus_map == NULL) { 186 printf("\n_fhc_bus_map: invalid parent"); 187 return (EINVAL); 188 } 189 190 for (i = 0; i < sc->sc_nrange; i++) { 191 bus_addr_t paddr; 192 193 if (sc->sc_range[i].cspace != slot) 194 continue; 195 196 paddr = offset - sc->sc_range[i].coffset; 197 paddr += sc->sc_range[i].poffset; 198 paddr |= ((bus_addr_t)sc->sc_range[i].pspace << 32); 199 200 return bus_space_map(t->parent, paddr, size, flags, hp); 201 } 202 203 return (EINVAL); 204 } 205 206 bus_space_handle_t * 207 fhc_find_intr_handle(struct fhc_softc *sc, int ino) 208 { 209 switch (FHC_INO(ino)) { 210 case FHC_F_INO: 211 return &sc->sc_freg; 212 case FHC_S_INO: 213 return &sc->sc_sreg; 214 case FHC_U_INO: 215 return &sc->sc_ureg; 216 case FHC_T_INO: 217 return &sc->sc_treg; 218 default: 219 break; 220 } 221 222 return (NULL); 223 } 224 225 void * 226 fhc_intr_establish(bus_space_tag_t t, int ihandle, int level, 227 int (*handler)(void *), void *arg, void (*fastvec)(void) /* ignored */) 228 { 229 struct fhc_softc *sc = t->cookie; 230 volatile u_int64_t *intrmapptr = NULL, *intrclrptr = NULL; 231 struct intrhand *ih; 232 long vec; 233 bus_space_handle_t *hp; 234 struct fhc_intr_reg *intrregs; 235 236 hp = fhc_find_intr_handle(sc, ihandle); 237 if (hp == NULL) { 238 printf(": can't find intr handle\n"); 239 return (NULL); 240 } 241 242 intrregs = bus_space_vaddr(sc->sc_bt, *hp); 243 intrmapptr = &intrregs->imap; 244 intrclrptr = &intrregs->iclr; 245 vec = ((sc->sc_ign << INTMAP_IGN_SHIFT) & INTMAP_IGN) | 246 INTINO(ihandle); 247 248 ih = intrhand_alloc(); 249 250 ih->ih_ivec = ihandle; 251 252 /* Register the map and clear intr registers */ 253 ih->ih_map = intrmapptr; 254 ih->ih_clr = intrclrptr; 255 256 ih->ih_fun = handler; 257 ih->ih_arg = arg; 258 ih->ih_pil = level; 259 ih->ih_number = vec; 260 261 intr_establish(ih->ih_pil, level != IPL_VM, ih); 262 263 /* 264 * XXXX --- we really should use bus_space for this. 265 */ 266 if (intrmapptr != NULL) { 267 u_int64_t r; 268 269 r = *intrmapptr; 270 r |= INTMAP_V | (CPU_UPAID << INTMAP_TID_SHIFT); 271 *intrmapptr = r; 272 r = *intrmapptr; 273 ih->ih_number |= r & INTMAP_INR; 274 } 275 276 return (ih); 277 } 278
Indexes created Sat Oct 11 19:10:01 GMT 2025