Annotation of sys/arch/sparc64/dev/fhc.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: fhc.c,v 1.13 2007/05/01 19:44:56 kettenis 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: 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: getprop(node, "reg", sizeof(struct fhc_reg),
! 109: &fa.fa_nreg, (void **)&fa.fa_reg);
! 110: getprop(node, "interrupts", sizeof(int),
! 111: &fa.fa_nintr, (void **)&fa.fa_intr);
! 112: getprop(node, "address", sizeof(*fa.fa_promvaddrs),
! 113: &fa.fa_npromvaddrs, (void **)&fa.fa_promvaddrs);
! 114:
! 115: (void)config_found(&sc->sc_dv, (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_nintr != NULL)
! 122: free(fa.fa_intr, M_DEVBUF);
! 123: if (fa.fa_promvaddrs != NULL)
! 124: free(fa.fa_promvaddrs, M_DEVBUF);
! 125: }
! 126:
! 127: sc->sc_blink.bl_func = fhc_led_blink;
! 128: sc->sc_blink.bl_arg = sc;
! 129: blink_led_register(&sc->sc_blink);
! 130: }
! 131:
! 132: int
! 133: fhc_print(void *args, const char *busname)
! 134: {
! 135: struct fhc_attach_args *fa = args;
! 136: char *class;
! 137:
! 138: if (busname != NULL) {
! 139: printf("%s at %s", fa->fa_name, busname);
! 140: class = getpropstring(fa->fa_node, "device_type");
! 141: if (*class != '\0')
! 142: printf(" class %s", class);
! 143: }
! 144: return (UNCONF);
! 145: }
! 146:
! 147: int
! 148: fhc_get_string(int node, char *name, char **buf)
! 149: {
! 150: int len;
! 151:
! 152: len = getproplen(node, name);
! 153: if (len < 0)
! 154: return (len);
! 155: *buf = (char *)malloc(len + 1, M_DEVBUF, M_NOWAIT);
! 156: if (*buf == NULL)
! 157: return (-1);
! 158:
! 159: if (len != 0)
! 160: getpropstringA(node, name, *buf);
! 161: (*buf)[len] = '\0';
! 162: return (0);
! 163: }
! 164:
! 165: bus_space_tag_t
! 166: fhc_alloc_bus_tag(struct fhc_softc *sc)
! 167: {
! 168: struct sparc_bus_space_tag *bt;
! 169:
! 170: bt = malloc(sizeof(*bt), M_DEVBUF, M_NOWAIT);
! 171: if (bt == NULL)
! 172: panic("fhc: couldn't alloc bus tag");
! 173:
! 174: bzero(bt, sizeof(*bt));
! 175: snprintf(bt->name, sizeof(bt->name), "%s", sc->sc_dv.dv_xname);
! 176: bt->cookie = sc;
! 177: bt->parent = sc->sc_bt;
! 178: bt->asi = bt->parent->asi;
! 179: bt->sasi = bt->parent->sasi;
! 180: bt->sparc_bus_map = _fhc_bus_map;
! 181: /* XXX bt->sparc_bus_mmap = fhc_bus_mmap; */
! 182: bt->sparc_intr_establish = fhc_intr_establish;
! 183: return (bt);
! 184: }
! 185:
! 186: int
! 187: _fhc_bus_map(bus_space_tag_t t, bus_space_tag_t t0, bus_addr_t addr,
! 188: bus_size_t size, int flags, bus_space_handle_t *hp)
! 189: {
! 190: struct fhc_softc *sc = t->cookie;
! 191: int64_t slot = BUS_ADDR_IOSPACE(addr);
! 192: int64_t offset = BUS_ADDR_PADDR(addr);
! 193: int i;
! 194:
! 195: if (t->parent == NULL || t->parent->sparc_bus_map == NULL) {
! 196: printf("\n_fhc_bus_map: invalid parent");
! 197: return (EINVAL);
! 198: }
! 199:
! 200: if (flags & BUS_SPACE_MAP_PROMADDRESS)
! 201: return ((*t->parent->sparc_bus_map)(t, t0, addr,
! 202: size, flags, hp));
! 203:
! 204: for (i = 0; i < sc->sc_nrange; i++) {
! 205: bus_addr_t paddr;
! 206:
! 207: if (sc->sc_range[i].cspace != slot)
! 208: continue;
! 209:
! 210: paddr = offset - sc->sc_range[i].coffset;
! 211: paddr += sc->sc_range[i].poffset;
! 212: paddr |= ((bus_addr_t)sc->sc_range[i].pspace << 32);
! 213:
! 214: return ((*t->parent->sparc_bus_map)(t->parent, t0, paddr,
! 215: size, flags, hp));
! 216: }
! 217:
! 218: return (EINVAL);
! 219: }
! 220:
! 221: bus_space_handle_t *
! 222: fhc_find_intr_handle(struct fhc_softc *sc, int ino)
! 223: {
! 224: switch (FHC_INO(ino)) {
! 225: case FHC_F_INO:
! 226: return &sc->sc_freg;
! 227: case FHC_S_INO:
! 228: return &sc->sc_sreg;
! 229: case FHC_U_INO:
! 230: return &sc->sc_ureg;
! 231: case FHC_T_INO:
! 232: return &sc->sc_treg;
! 233: default:
! 234: break;
! 235: }
! 236:
! 237: return (NULL);
! 238: }
! 239:
! 240: void *
! 241: fhc_intr_establish(bus_space_tag_t t, bus_space_tag_t t0, int ihandle,
! 242: int level, int flags, int (*handler)(void *), void *arg, const char *what)
! 243: {
! 244: struct fhc_softc *sc = t->cookie;
! 245: volatile u_int64_t *intrmapptr = NULL, *intrclrptr = NULL;
! 246: struct intrhand *ih;
! 247: long vec;
! 248:
! 249: if (level == IPL_NONE)
! 250: level = INTLEV(ihandle);
! 251: if (level == IPL_NONE) {
! 252: printf(": no IPL, setting IPL 2.\n");
! 253: level = 2;
! 254: }
! 255:
! 256: if ((flags & BUS_INTR_ESTABLISH_SOFTINTR) == 0) {
! 257: bus_space_handle_t *hp;
! 258: struct fhc_intr_reg *intrregs;
! 259:
! 260: hp = fhc_find_intr_handle(sc, ihandle);
! 261: if (hp == NULL) {
! 262: printf(": can't find intr handle\n");
! 263: return (NULL);
! 264: }
! 265:
! 266: intrregs = bus_space_vaddr(sc->sc_bt, *hp);
! 267: intrmapptr = &intrregs->imap;
! 268: intrclrptr = &intrregs->iclr;
! 269: vec = ((sc->sc_ign << INTMAP_IGN_SHIFT) & INTMAP_IGN) |
! 270: INTINO(ihandle);
! 271: } else
! 272: vec = INTVEC(ihandle);
! 273:
! 274: ih = bus_intr_allocate(t0, handler, arg, vec, level, intrmapptr,
! 275: intrclrptr, what);
! 276: if (ih == NULL)
! 277: return (NULL);
! 278:
! 279: intr_establish(ih->ih_pil, ih);
! 280:
! 281: if (intrmapptr != NULL) {
! 282: u_int64_t r;
! 283:
! 284: r = *intrmapptr;
! 285: r |= INTMAP_V;
! 286: *intrmapptr = r;
! 287: r = *intrmapptr;
! 288: ih->ih_number |= r & INTMAP_INR;
! 289: }
! 290:
! 291: return (ih);
! 292: }
! 293:
! 294: void
! 295: fhc_led_blink(void *vsc, int on)
! 296: {
! 297: struct fhc_softc *sc = vsc;
! 298: int s;
! 299: u_int32_t r;
! 300:
! 301: s = splhigh();
! 302: r = bus_space_read_4(sc->sc_bt, sc->sc_preg, FHC_P_CTRL);
! 303: if (on)
! 304: r |= FHC_P_CTRL_RLED;
! 305: else
! 306: r &= ~FHC_P_CTRL_RLED;
! 307: r &= ~(FHC_P_CTRL_AOFF | FHC_P_CTRL_BOFF | FHC_P_CTRL_SLINE);
! 308: bus_space_write_4(sc->sc_bt, sc->sc_preg, FHC_P_CTRL, r);
! 309: bus_space_read_4(sc->sc_bt, sc->sc_preg, FHC_P_CTRL);
! 310: splx(s);
! 311: }
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