Annotation of sys/dev/pci/bktr/bktr_os.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: bktr_os.c,v 1.27 2007/06/18 07:31:14 jakemsr Exp $ */
! 2: /* $FreeBSD: src/sys/dev/bktr/bktr_os.c,v 1.20 2000/10/20 08:16:53 roger Exp $ */
! 3:
! 4: /*
! 5: * This is part of the Driver for Video Capture Cards (Frame grabbers)
! 6: * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879
! 7: * chipset.
! 8: * Copyright Roger Hardiman and Amancio Hasty.
! 9: *
! 10: * bktr_os : This has all the Operating System dependant code,
! 11: * probe/attach and open/close/ioctl/read/mmap
! 12: * memory allocation
! 13: * PCI bus interfacing
! 14: *
! 15: *
! 16: */
! 17:
! 18: /*
! 19: * 1. Redistributions of source code must retain the
! 20: * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman
! 21: * All rights reserved.
! 22: *
! 23: * Redistribution and use in source and binary forms, with or without
! 24: * modification, are permitted provided that the following conditions
! 25: * are met:
! 26: * 1. Redistributions of source code must retain the above copyright
! 27: * notice, this list of conditions and the following disclaimer.
! 28: * 2. Redistributions in binary form must reproduce the above copyright
! 29: * notice, this list of conditions and the following disclaimer in the
! 30: * documentation and/or other materials provided with the distribution.
! 31: * 3. All advertising materials mentioning features or use of this software
! 32: * must display the following acknowledgement:
! 33: * This product includes software developed by Amancio Hasty and
! 34: * Roger Hardiman
! 35: * 4. The name of the author may not be used to endorse or promote products
! 36: * derived from this software without specific prior written permission.
! 37: *
! 38: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 39: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
! 40: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
! 41: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
! 42: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
! 43: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
! 44: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 45: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
! 46: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
! 47: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 48: * POSSIBILITY OF SUCH DAMAGE.
! 49: */
! 50:
! 51: #define FIFO_RISC_DISABLED 0
! 52: #define ALL_INTS_DISABLED 0
! 53:
! 54: #include "radio.h"
! 55:
! 56: #include <sys/param.h>
! 57: #include <sys/systm.h>
! 58: #include <sys/conf.h>
! 59: #include <sys/uio.h>
! 60: #include <sys/kernel.h>
! 61: #include <sys/signalvar.h>
! 62: #include <sys/mman.h>
! 63: #include <sys/poll.h>
! 64: #include <sys/selinfo.h>
! 65: #include <sys/vnode.h>
! 66: #if NRADIO > 0
! 67: #include <sys/radioio.h>
! 68: #include <dev/radio_if.h>
! 69: #endif
! 70:
! 71: #include <uvm/uvm_extern.h>
! 72:
! 73: #include <sys/device.h>
! 74: #include <dev/pci/pcivar.h>
! 75: #include <dev/pci/pcireg.h>
! 76: #include <dev/pci/pcidevs.h>
! 77:
! 78: #ifdef BKTR_DEBUG
! 79: int bktr_debug = 1;
! 80: #define DPR(x) (bktr_debug ? printf x : 0)
! 81: #else
! 82: #define DPR(x)
! 83: #endif
! 84:
! 85: #include <dev/ic/bt8xx.h> /* OpenBSD location for .h files */
! 86: #include <dev/pci/bktr/bktr_reg.h>
! 87: #include <dev/pci/bktr/bktr_tuner.h>
! 88: #include <dev/pci/bktr/bktr_card.h>
! 89: #include <dev/pci/bktr/bktr_audio.h>
! 90: #include <dev/pci/bktr/bktr_core.h>
! 91: #include <dev/pci/bktr/bktr_os.h>
! 92:
! 93: #define IPL_VIDEO IPL_BIO /* XXX */
! 94:
! 95: static int bktr_intr(void *arg) { return common_bktr_intr(arg); }
! 96:
! 97: #define bktr_open bktropen
! 98: #define bktr_close bktrclose
! 99: #define bktr_read bktrread
! 100: #define bktr_write bktrwrite
! 101: #define bktr_ioctl bktrioctl
! 102: #define bktr_mmap bktrmmap
! 103:
! 104: int bktr_open(dev_t, int, int, struct proc *);
! 105: int bktr_close(dev_t, int, int, struct proc *);
! 106: int bktr_read(dev_t, struct uio *, int);
! 107: int bktr_write(dev_t, struct uio *, int);
! 108: int bktr_ioctl(dev_t, ioctl_cmd_t, caddr_t, int, struct proc *);
! 109: paddr_t bktr_mmap(dev_t, off_t, int);
! 110:
! 111: static int bktr_probe(struct device *, void *, void *);
! 112: static void bktr_attach(struct device *, struct device *, void *);
! 113:
! 114: struct cfattach bktr_ca = {
! 115: sizeof(struct bktr_softc), bktr_probe, bktr_attach
! 116: };
! 117:
! 118: struct cfdriver bktr_cd = {
! 119: NULL, "bktr", DV_DULL
! 120: };
! 121:
! 122: #if NRADIO > 0
! 123: /* for radio(4) */
! 124: int bktr_get_info(void *, struct radio_info *);
! 125: int bktr_set_info(void *, struct radio_info *);
! 126:
! 127: struct radio_hw_if bktr_hw_if = {
! 128: NULL, /* open */
! 129: NULL, /* close */
! 130: bktr_get_info,
! 131: bktr_set_info,
! 132: NULL /* search */
! 133: };
! 134: #endif
! 135:
! 136: int
! 137: bktr_probe(parent, match, aux)
! 138: struct device *parent;
! 139: void *match;
! 140: void *aux;
! 141: {
! 142: struct pci_attach_args *pa = aux;
! 143:
! 144: if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_BROOKTREE &&
! 145: (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROOKTREE_BT848 ||
! 146: PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROOKTREE_BT849 ||
! 147: PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROOKTREE_BT878 ||
! 148: PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROOKTREE_BT879))
! 149: return 1;
! 150:
! 151: return 0;
! 152: }
! 153:
! 154:
! 155: /*
! 156: * the attach routine.
! 157: */
! 158: static void
! 159: bktr_attach(struct device *parent, struct device *self, void *aux)
! 160: {
! 161: bktr_ptr_t bktr;
! 162: u_int latency;
! 163: u_int fun;
! 164: unsigned int rev;
! 165: struct pci_attach_args *pa = aux;
! 166: pci_intr_handle_t ih;
! 167: const char *intrstr;
! 168: int retval;
! 169: int unit;
! 170:
! 171: bktr = (bktr_ptr_t)self;
! 172: unit = bktr->bktr_dev.dv_unit;
! 173: bktr->dmat = pa->pa_dmat;
! 174:
! 175: /* Enabled Bus Master
! 176: XXX: check if all old DMA is stopped first (e.g. after warm
! 177: boot) */
! 178: fun = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
! 179: DPR((" fun=%b", fun, PCI_COMMAND_STATUS_BITS));
! 180: pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
! 181: fun | PCI_COMMAND_MEM_ENABLE | PCI_COMMAND_MASTER_ENABLE |
! 182: PCI_COMMAND_BACKTOBACK_ENABLE);
! 183:
! 184: /*
! 185: * map memory
! 186: */
! 187: retval = pci_mapreg_map(pa, PCI_MAPREG_START, PCI_MAPREG_TYPE_MEM |
! 188: PCI_MAPREG_MEM_TYPE_32BIT, 0, &bktr->memt, &bktr->memh, NULL,
! 189: &bktr->obmemsz, 0);
! 190: DPR(("pci_mapreg_map: memt %lx, memh %lx, size %x\n",
! 191: bktr->memt, bktr->memh, bktr->obmemsz));
! 192: if (retval) {
! 193: printf("%s: couldn't map memory\n", bktr_name(bktr));
! 194: return;
! 195: }
! 196:
! 197: /*
! 198: * Disable the brooktree device
! 199: */
! 200: OUTL(bktr, BKTR_INT_MASK, ALL_INTS_DISABLED);
! 201: OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_RISC_DISABLED);
! 202:
! 203: /*
! 204: * map interrupt
! 205: */
! 206: if (pci_intr_map(pa, &ih)) {
! 207: printf("%s: couldn't map interrupt\n",
! 208: bktr_name(bktr));
! 209: return;
! 210: }
! 211: intrstr = pci_intr_string(pa->pa_pc, ih);
! 212: bktr->ih = pci_intr_establish(pa->pa_pc, ih, IPL_VIDEO,
! 213: bktr_intr, bktr, bktr->bktr_dev.dv_xname);
! 214: if (bktr->ih == NULL) {
! 215: printf("%s: couldn't establish interrupt",
! 216: bktr_name(bktr));
! 217: if (intrstr != NULL)
! 218: printf(" at %s", intrstr);
! 219: printf("\n");
! 220: return;
! 221: }
! 222: if (intrstr != NULL)
! 223: printf(": %s\n", intrstr);
! 224:
! 225: /*
! 226: * PCI latency timer. 32 is a good value for 4 bus mastering slots, if
! 227: * you have more than four, then 16 would probably be a better value.
! 228: */
! 229: #ifndef BROOKTREE_DEF_LATENCY_VALUE
! 230: #define BROOKTREE_DEF_LATENCY_VALUE 0x10
! 231: #endif
! 232: latency = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_LATENCY_TIMER);
! 233: latency = (latency >> 8) & 0xff;
! 234:
! 235: if (!latency) {
! 236: if (bootverbose) {
! 237: printf("%s: PCI bus latency was 0 changing to %d",
! 238: bktr_name(bktr), BROOKTREE_DEF_LATENCY_VALUE);
! 239: }
! 240: latency = BROOKTREE_DEF_LATENCY_VALUE;
! 241: pci_conf_write(pa->pa_pc, pa->pa_tag,
! 242: PCI_LATENCY_TIMER, latency<<8);
! 243: }
! 244:
! 245:
! 246: /* read the pci id and determine the card type */
! 247: fun = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_ID_REG);
! 248: rev = PCI_REVISION(pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CLASS_REG));
! 249:
! 250: common_bktr_attach(bktr, unit, fun, rev);
! 251:
! 252: #if NRADIO > 0
! 253: if (bktr->card.tuner->pllControl[3] != 0x00)
! 254: radio_attach_mi(&bktr_hw_if, bktr, &bktr->bktr_dev);
! 255: #endif
! 256: }
! 257:
! 258:
! 259: /*
! 260: * Special Memory Allocation
! 261: */
! 262: vaddr_t
! 263: get_bktr_mem(bktr, dmapp, size)
! 264: bktr_ptr_t bktr;
! 265: bus_dmamap_t *dmapp;
! 266: unsigned int size;
! 267: {
! 268: bus_dma_tag_t dmat = bktr->dmat;
! 269: bus_dma_segment_t seg;
! 270: bus_size_t align;
! 271: int rseg;
! 272: caddr_t kva;
! 273:
! 274: /*
! 275: * Allocate a DMA area
! 276: */
! 277: align = 1 << 24;
! 278: if (bus_dmamem_alloc(dmat, size, align, 0, &seg, 1,
! 279: &rseg, BUS_DMA_NOWAIT)) {
! 280: align = PAGE_SIZE;
! 281: if (bus_dmamem_alloc(dmat, size, align, 0, &seg, 1,
! 282: &rseg, BUS_DMA_NOWAIT)) {
! 283: printf("%s: Unable to dmamem_alloc of %d bytes\n",
! 284: bktr_name(bktr), size);
! 285: return 0;
! 286: }
! 287: }
! 288: if (bus_dmamem_map(dmat, &seg, rseg, size,
! 289: &kva, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
! 290: printf("%s: Unable to dmamem_map of %d bytes\n",
! 291: bktr_name(bktr), size);
! 292: bus_dmamem_free(dmat, &seg, rseg);
! 293: return 0;
! 294: }
! 295: /*
! 296: * Create and locd the DMA map for the DMA area
! 297: */
! 298: if (bus_dmamap_create(dmat, size, 1, size, 0, BUS_DMA_NOWAIT, dmapp)) {
! 299: printf("%s: Unable to dmamap_create of %d bytes\n",
! 300: bktr_name(bktr), size);
! 301: bus_dmamem_unmap(dmat, kva, size);
! 302: bus_dmamem_free(dmat, &seg, rseg);
! 303: return 0;
! 304: }
! 305: if (bus_dmamap_load(dmat, *dmapp, kva, size, NULL, BUS_DMA_NOWAIT)) {
! 306: printf("%s: Unable to dmamap_load of %d bytes\n",
! 307: bktr_name(bktr), size);
! 308: bus_dmamem_unmap(dmat, kva, size);
! 309: bus_dmamem_free(dmat, &seg, rseg);
! 310: bus_dmamap_destroy(dmat, *dmapp);
! 311: return 0;
! 312: }
! 313: return (vaddr_t)kva;
! 314: }
! 315:
! 316: void
! 317: free_bktr_mem(bktr, dmap, kva)
! 318: bktr_ptr_t bktr;
! 319: bus_dmamap_t dmap;
! 320: vaddr_t kva;
! 321: {
! 322: bus_dma_tag_t dmat = bktr->dmat;
! 323:
! 324: bus_dmamem_unmap(dmat, (caddr_t)kva, dmap->dm_mapsize);
! 325: bus_dmamem_free(dmat, dmap->dm_segs, 1);
! 326: bus_dmamap_destroy(dmat, dmap);
! 327: }
! 328:
! 329:
! 330: /*---------------------------------------------------------
! 331: **
! 332: ** BrookTree 848 character device driver routines
! 333: **
! 334: **---------------------------------------------------------
! 335: */
! 336:
! 337:
! 338: #define VIDEO_DEV 0x00
! 339: #define TUNER_DEV 0x01
! 340: #define VBI_DEV 0x02
! 341:
! 342: #define UNIT(x) (minor((x) & 0x0f))
! 343: #define FUNCTION(x) (minor((x >> 4) & 0x0f))
! 344:
! 345: /*
! 346: *
! 347: */
! 348: int
! 349: bktr_open(dev_t dev, int flags, int fmt, struct proc *p)
! 350: {
! 351: bktr_ptr_t bktr;
! 352: int unit;
! 353:
! 354: unit = UNIT(dev);
! 355:
! 356: /* unit out of range */
! 357: if ((unit >= bktr_cd.cd_ndevs) || (bktr_cd.cd_devs[unit] == NULL))
! 358: return(ENXIO);
! 359:
! 360: bktr = bktr_cd.cd_devs[unit];
! 361:
! 362: if (!(bktr->flags & METEOR_INITALIZED)) /* device not found */
! 363: return(ENXIO);
! 364:
! 365: switch (FUNCTION(dev)) {
! 366: case VIDEO_DEV:
! 367: return(video_open(bktr));
! 368: case TUNER_DEV:
! 369: return(tuner_open(bktr));
! 370: case VBI_DEV:
! 371: return(vbi_open(bktr));
! 372: }
! 373:
! 374: return(ENXIO);
! 375: }
! 376:
! 377:
! 378: /*
! 379: *
! 380: */
! 381: int
! 382: bktr_close(dev_t dev, int flags, int fmt, struct proc *p)
! 383: {
! 384: bktr_ptr_t bktr;
! 385: int unit;
! 386:
! 387: unit = UNIT(dev);
! 388:
! 389: bktr = bktr_cd.cd_devs[unit];
! 390:
! 391: switch (FUNCTION(dev)) {
! 392: case VIDEO_DEV:
! 393: return(video_close(bktr));
! 394: case TUNER_DEV:
! 395: return(tuner_close(bktr));
! 396: case VBI_DEV:
! 397: return(vbi_close(bktr));
! 398: }
! 399:
! 400: return(ENXIO);
! 401: }
! 402:
! 403: /*
! 404: *
! 405: */
! 406: int
! 407: bktr_read(dev_t dev, struct uio *uio, int ioflag)
! 408: {
! 409: bktr_ptr_t bktr;
! 410: int unit;
! 411:
! 412: unit = UNIT(dev);
! 413:
! 414: bktr = bktr_cd.cd_devs[unit];
! 415:
! 416: switch (FUNCTION(dev)) {
! 417: case VIDEO_DEV:
! 418: return(video_read(bktr, unit, dev, uio));
! 419: case VBI_DEV:
! 420: return(vbi_read(bktr, uio, ioflag));
! 421: }
! 422:
! 423: return(ENXIO);
! 424: }
! 425:
! 426:
! 427: /*
! 428: *
! 429: */
! 430: int
! 431: bktr_write(dev_t dev, struct uio *uio, int ioflag)
! 432: {
! 433: /* operation not supported */
! 434: return(EOPNOTSUPP);
! 435: }
! 436:
! 437: /*
! 438: *
! 439: */
! 440: int
! 441: bktr_ioctl(dev_t dev, ioctl_cmd_t cmd, caddr_t arg, int flag, struct proc* pr)
! 442: {
! 443: bktr_ptr_t bktr;
! 444: int unit;
! 445:
! 446: unit = UNIT(dev);
! 447:
! 448: bktr = bktr_cd.cd_devs[unit];
! 449:
! 450: if (bktr->bigbuf == 0) /* no frame buffer allocated (ioctl failed) */
! 451: return(ENOMEM);
! 452:
! 453: switch (FUNCTION(dev)) {
! 454: case VIDEO_DEV:
! 455: return(video_ioctl(bktr, unit, cmd, arg, pr));
! 456: case TUNER_DEV:
! 457: return(tuner_ioctl(bktr, unit, cmd, arg, pr));
! 458: }
! 459:
! 460: return(ENXIO);
! 461: }
! 462:
! 463: /*
! 464: *
! 465: */
! 466: paddr_t
! 467: bktr_mmap(dev_t dev, off_t offset, int nprot)
! 468: {
! 469: int unit;
! 470: bktr_ptr_t bktr;
! 471:
! 472: unit = UNIT(dev);
! 473:
! 474: if (FUNCTION(dev) > 0) /* only allow mmap on /dev/bktr[n] */
! 475: return(-1);
! 476:
! 477: bktr = bktr_cd.cd_devs[unit];
! 478:
! 479: if ((vaddr_t)offset < 0)
! 480: return(-1);
! 481:
! 482: if ((vaddr_t)offset >= bktr->alloc_pages * PAGE_SIZE)
! 483: return(-1);
! 484:
! 485: return (bus_dmamem_mmap(bktr->dmat, bktr->dm_mem->dm_segs, 1,
! 486: (vaddr_t)offset, nprot, BUS_DMA_WAITOK));
! 487: }
! 488:
! 489: #if NRADIO > 0
! 490: int
! 491: bktr_set_info(void *v, struct radio_info *ri)
! 492: {
! 493: struct bktr_softc *sc = v;
! 494: struct TVTUNER *tv = &sc->tuner;
! 495: u_int32_t freq;
! 496: u_int32_t chan;
! 497:
! 498: if (ri->mute) {
! 499: /* mute the audio stream by switching the mux */
! 500: set_audio(sc, AUDIO_MUTE);
! 501: } else {
! 502: /* unmute the audio stream */
! 503: set_audio(sc, AUDIO_UNMUTE);
! 504: init_audio_devices(sc);
! 505: }
! 506:
! 507: set_audio(sc, AUDIO_INTERN); /* use internal audio */
! 508: temp_mute(sc, TRUE);
! 509:
! 510: if (ri->tuner_mode == RADIO_TUNER_MODE_TV) {
! 511: if (ri->chan) {
! 512: if (ri->chan < MIN_TV_CHAN)
! 513: ri->chan = MIN_TV_CHAN;
! 514: if (ri->chan > MAX_TV_CHAN)
! 515: ri->chan = MAX_TV_CHAN;
! 516:
! 517: chan = ri->chan;
! 518: ri->chan = tv_channel(sc, chan);
! 519: tv->tuner_mode = BT848_TUNER_MODE_TV;
! 520: } else {
! 521: ri->chan = tv->channel;
! 522: }
! 523: } else {
! 524: if (ri->freq) {
! 525: if (ri->freq < MIN_FM_FREQ)
! 526: ri->freq = MIN_FM_FREQ;
! 527: if (ri->freq > MAX_FM_FREQ)
! 528: ri->freq = MAX_FM_FREQ;
! 529:
! 530: freq = ri->freq / 10;
! 531: ri->freq = tv_freq(sc, freq, FM_RADIO_FREQUENCY) * 10;
! 532: tv->tuner_mode = BT848_TUNER_MODE_RADIO;
! 533: } else {
! 534: ri->freq = tv->frequency;
! 535: }
! 536: }
! 537:
! 538: if (ri->chnlset >= CHNLSET_MIN && ri->chnlset <= CHNLSET_MAX)
! 539: tv->chnlset = ri->chnlset;
! 540: else
! 541: tv->chnlset = DEFAULT_CHNLSET;
! 542:
! 543: temp_mute(sc, FALSE);
! 544:
! 545: return (0);
! 546: }
! 547:
! 548: int
! 549: bktr_get_info(void *v, struct radio_info *ri)
! 550: {
! 551: struct bktr_softc *sc = v;
! 552: struct TVTUNER *tv = &sc->tuner;
! 553: int status;
! 554:
! 555: status = get_tuner_status(sc);
! 556:
! 557: #define STATUSBIT_STEREO 0x10
! 558: ri->mute = (int)sc->audio_mute_state ? 1 : 0;
! 559: ri->caps = RADIO_CAPS_DETECT_STEREO | RADIO_CAPS_HW_AFC;
! 560: ri->info = (status & STATUSBIT_STEREO) ? RADIO_INFO_STEREO : 0;
! 561:
! 562: /* not yet supported */
! 563: ri->volume = ri->rfreq = ri->lock = 0;
! 564:
! 565: switch (tv->tuner_mode) {
! 566: case BT848_TUNER_MODE_TV:
! 567: ri->tuner_mode = RADIO_TUNER_MODE_TV;
! 568: ri->freq = tv->frequency * 1000 / 16;
! 569: break;
! 570: case BT848_TUNER_MODE_RADIO:
! 571: ri->tuner_mode = RADIO_TUNER_MODE_RADIO;
! 572: ri->freq = tv->frequency * 10;
! 573: break;
! 574: }
! 575:
! 576: /*
! 577: * The field ri->stereo is used to forcible switch to
! 578: * mono/stereo, not as an indicator of received signal quality.
! 579: * The ri->info is for that purpose.
! 580: */
! 581: ri->stereo = 1; /* Can't switch to mono, always stereo */
! 582:
! 583: ri->chan = tv->channel;
! 584: ri->chnlset = tv->chnlset;
! 585:
! 586: return (0);
! 587: }
! 588: #endif /* NRADIO */
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