Annotation of sys/arch/hppa/gsc/gscbus.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: gscbus.c,v 1.27 2005/06/09 18:01:36 mickey Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1998 Michael Shalayeff
! 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 WARRANTIES
! 18: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 19: * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES 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 MIND, 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
! 25: * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
! 26: * THE POSSIBILITY OF SUCH DAMAGE.
! 27: */
! 28:
! 29: /* #define GSCDEBUG */
! 30:
! 31: #include <sys/param.h>
! 32: #include <sys/systm.h>
! 33: #include <sys/device.h>
! 34: #include <sys/malloc.h>
! 35: #include <sys/user.h>
! 36: #include <sys/mbuf.h>
! 37: #include <sys/reboot.h>
! 38:
! 39: #include <machine/iomod.h>
! 40: #include <machine/autoconf.h>
! 41: #include <machine/cpufunc.h>
! 42:
! 43: #include <hppa/gsc/gscbusvar.h>
! 44:
! 45: int gscmatch(struct device *, void *, void *);
! 46: void gscattach(struct device *, struct device *, void *);
! 47:
! 48: struct cfattach gsc_ca = {
! 49: sizeof(struct gsc_softc), gscmatch, gscattach
! 50: };
! 51:
! 52: struct cfdriver gsc_cd = {
! 53: NULL, "gsc", DV_DULL
! 54: };
! 55:
! 56: int gsc_dmamap_create(void *, bus_size_t, int,
! 57: bus_size_t, bus_size_t, int, bus_dmamap_t *);
! 58: void gsc_dmamap_destroy(void *, bus_dmamap_t);
! 59: int gsc_dmamap_load(void *, bus_dmamap_t, void *,
! 60: bus_size_t, struct proc *, int);
! 61: int gsc_dmamap_load_mbuf(void *, bus_dmamap_t, struct mbuf *, int);
! 62: int gsc_dmamap_load_uio(void *, bus_dmamap_t, struct uio *, int);
! 63: int gsc_dmamap_load_raw(void *, bus_dmamap_t,
! 64: bus_dma_segment_t *, int, bus_size_t, int);
! 65: void gsc_dmamap_unload(void *, bus_dmamap_t);
! 66: void gsc_dmamap_sync(void *, bus_dmamap_t, bus_addr_t, bus_size_t,
! 67: int);
! 68:
! 69: int gsc_dmamem_alloc(void *, bus_size_t, bus_size_t,
! 70: bus_size_t, bus_dma_segment_t *, int, int *, int);
! 71: void gsc_dmamem_free(void *, bus_dma_segment_t *, int);
! 72: int gsc_dmamem_map(void *, bus_dma_segment_t *,
! 73: int, size_t, caddr_t *, int);
! 74: void gsc_dmamem_unmap(void *, caddr_t, size_t);
! 75: paddr_t gsc_dmamem_mmap(void *, bus_dma_segment_t *, int, off_t, int, int);
! 76:
! 77: int
! 78: gscmatch(parent, cfdata, aux)
! 79: struct device *parent;
! 80: void *cfdata;
! 81: void *aux;
! 82: {
! 83: struct confargs *ca = aux;
! 84:
! 85: return !strcmp(ca->ca_name, "gsc");
! 86: }
! 87:
! 88: void
! 89: gscattach(parent, self, aux)
! 90: struct device *parent;
! 91: struct device *self;
! 92: void *aux;
! 93: {
! 94: struct gsc_softc *sc = (struct gsc_softc *)self;
! 95: struct gsc_attach_args *ga = aux;
! 96:
! 97: sc->sc_iot = ga->ga_iot;
! 98: sc->sc_ic = ga->ga_ic;
! 99:
! 100: #ifdef USELEDS
! 101: if (machine_ledaddr)
! 102: printf(": %sleds", machine_ledword? "word" : "");
! 103: #endif
! 104: printf ("\n");
! 105:
! 106: sc->sc_ih = cpu_intr_establish(IPL_NESTED, ga->ga_irq,
! 107: gsc_intr, (void *)sc->sc_ic->gsc_base, sc->sc_dev.dv_xname);
! 108:
! 109: /* DMA guts */
! 110: sc->sc_dmatag._cookie = sc;
! 111: sc->sc_dmatag._dmamap_create = gsc_dmamap_create;
! 112: sc->sc_dmatag._dmamap_destroy = gsc_dmamap_destroy;
! 113: sc->sc_dmatag._dmamap_load = gsc_dmamap_load;
! 114: sc->sc_dmatag._dmamap_load_mbuf = gsc_dmamap_load_mbuf;
! 115: sc->sc_dmatag._dmamap_load_uio = gsc_dmamap_load_uio;
! 116: sc->sc_dmatag._dmamap_load_raw = gsc_dmamap_load_raw;
! 117: sc->sc_dmatag._dmamap_unload = gsc_dmamap_unload;
! 118: sc->sc_dmatag._dmamap_sync = gsc_dmamap_sync;
! 119:
! 120: sc->sc_dmatag._dmamem_alloc = gsc_dmamem_alloc;
! 121: sc->sc_dmatag._dmamem_free = gsc_dmamem_free;
! 122: sc->sc_dmatag._dmamem_map = gsc_dmamem_map;
! 123: sc->sc_dmatag._dmamem_unmap = gsc_dmamem_unmap;
! 124: sc->sc_dmatag._dmamem_mmap = gsc_dmamem_mmap;
! 125:
! 126: pdc_scanbus(self, &ga->ga_ca, MAXMODBUS, 0);
! 127: }
! 128:
! 129: int
! 130: gscprint(aux, pnp)
! 131: void *aux;
! 132: const char *pnp;
! 133: {
! 134: struct gsc_attach_args *ga = aux;
! 135:
! 136: if (pnp)
! 137: printf("%s at %s", ga->ga_name, pnp);
! 138: return (UNCONF);
! 139: }
! 140:
! 141: void *
! 142: gsc_intr_establish(sc, irq, pri, handler, arg, name)
! 143: struct gsc_softc *sc;
! 144: int pri;
! 145: int irq;
! 146: int (*handler)(void *v);
! 147: void *arg;
! 148: const char *name;
! 149: {
! 150: volatile u_int32_t *r = sc->sc_ic->gsc_base;
! 151: void *iv;
! 152:
! 153: if ((iv = cpu_intr_map(sc->sc_ih, pri, irq, handler, arg, name)))
! 154: r[1] |= (1 << irq);
! 155: else {
! 156: #ifdef GSCDEBUG
! 157: printf("%s: attaching irq %d, already occupied\n",
! 158: sc->sc_dev.dv_xname, irq);
! 159: #endif
! 160: }
! 161:
! 162: return (iv);
! 163: }
! 164:
! 165: void
! 166: gsc_intr_disestablish(sc, v)
! 167: struct gsc_softc *sc;
! 168: void *v;
! 169: {
! 170: #if notyet
! 171: volatile u_int32_t *r = sc->sc_ic->gsc_base;
! 172:
! 173: r[1] &= ~(1 << irq);
! 174:
! 175: cpu_intr_unmap(sc->sc_ih, v);
! 176: #endif
! 177: }
! 178:
! 179: int
! 180: gsc_dmamap_create(v, size, nseg, maxsegsz, boundary, flags, dmamp)
! 181: void *v;
! 182: bus_size_t size;
! 183: int nseg;
! 184: bus_size_t maxsegsz;
! 185: bus_size_t boundary;
! 186: int flags;
! 187: bus_dmamap_t *dmamp;
! 188: {
! 189: return 0;
! 190: }
! 191:
! 192: void
! 193: gsc_dmamap_destroy(v, map)
! 194: void *v;
! 195: bus_dmamap_t map;
! 196: {
! 197: }
! 198:
! 199: int
! 200: gsc_dmamap_load(v, map, buf, buflen, p, flags)
! 201: void *v;
! 202: bus_dmamap_t map;
! 203: void *buf;
! 204: bus_size_t buflen;
! 205: struct proc *p;
! 206: int flags;
! 207: {
! 208: return 0;
! 209: }
! 210:
! 211: int
! 212: gsc_dmamap_load_mbuf(v, map, mbuf, flags)
! 213: void *v;
! 214: bus_dmamap_t map;
! 215: struct mbuf *mbuf;
! 216: int flags;
! 217: {
! 218: return 0;
! 219: }
! 220:
! 221: int
! 222: gsc_dmamap_load_uio(v, map, uio, flags)
! 223: void *v;
! 224: bus_dmamap_t map;
! 225: struct uio *uio;
! 226: int flags;
! 227: {
! 228: return 0;
! 229: }
! 230:
! 231: int
! 232: gsc_dmamap_load_raw(v, map, segs, nsegs, size, flags)
! 233: void *v;
! 234: bus_dmamap_t map;
! 235: bus_dma_segment_t *segs;
! 236: int nsegs;
! 237: bus_size_t size;
! 238: int flags;
! 239: {
! 240: return 0;
! 241: }
! 242:
! 243: void
! 244: gsc_dmamap_unload(v, map)
! 245: void *v;
! 246: bus_dmamap_t map;
! 247: {
! 248:
! 249: }
! 250:
! 251: void
! 252: gsc_dmamap_sync(v, map, offset, len, op)
! 253: void *v;
! 254: bus_dmamap_t map;
! 255: bus_addr_t offset;
! 256: bus_size_t len;
! 257: int op;
! 258: {
! 259:
! 260: }
! 261:
! 262: int
! 263: gsc_dmamem_alloc(v, size, alignment, boundary, segs, nsegs, rsegs, flags)
! 264: void *v;
! 265: bus_size_t size;
! 266: bus_size_t alignment;
! 267: bus_size_t boundary;
! 268: bus_dma_segment_t *segs;
! 269: int nsegs;
! 270: int *rsegs;
! 271: int flags;
! 272: {
! 273: return 0;
! 274: }
! 275:
! 276: void
! 277: gsc_dmamem_free(v, segs, nsegs)
! 278: void *v;
! 279: bus_dma_segment_t *segs;
! 280: int nsegs;
! 281: {
! 282:
! 283: }
! 284:
! 285: int
! 286: gsc_dmamem_map(v, segs, nsegs, size, kvap, flags)
! 287: void *v;
! 288: bus_dma_segment_t *segs;
! 289: int nsegs;
! 290: size_t size;
! 291: caddr_t *kvap;
! 292: int flags;
! 293: {
! 294: return 0;
! 295: }
! 296:
! 297: void
! 298: gsc_dmamem_unmap(v, kva, size)
! 299: void *v;
! 300: caddr_t kva;
! 301: size_t size;
! 302: {
! 303:
! 304: }
! 305:
! 306: paddr_t
! 307: gsc_dmamem_mmap(v, segs, nsegs, off, prot, flags)
! 308: void *v;
! 309: bus_dma_segment_t *segs;
! 310: int nsegs;
! 311: off_t off;
! 312: int prot;
! 313: int flags;
! 314: {
! 315: return (-1);
! 316: }
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