Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 | /* $Id: c4.c,v 1.1.4.1.2.1 2001/12/21 15:00:17 kai Exp $ * * Module for AVM C4 & C2 card. * * Copyright 1999 by Carsten Paeth <calle@calle.de> * * This software may be used and distributed according to the terms * of the GNU General Public License, incorporated herein by reference. * */ #include <linux/config.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/skbuff.h> #include <linux/delay.h> #include <linux/mm.h> #include <linux/interrupt.h> #include <linux/ioport.h> #include <linux/pci.h> #include <linux/capi.h> #include <linux/kernelcapi.h> #include <linux/init.h> #include <asm/io.h> #include <asm/uaccess.h> #include <linux/netdevice.h> #include "capicmd.h" #include "capiutil.h" #include "capilli.h" #include "avmcard.h" static char *revision = "$Revision: 1.1.4.1.2.1 $"; #undef CONFIG_C4_DEBUG #undef CONFIG_C4_POLLDEBUG /* ------------------------------------------------------------- */ static int suppress_pollack; static struct pci_device_id c4_pci_tbl[] __devinitdata = { { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_21285, PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_C4, 4 }, { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_21285, PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_C2, 2 }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(pci, c4_pci_tbl); MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM C2/C4 cards"); MODULE_AUTHOR("Carsten Paeth"); MODULE_LICENSE("GPL"); MODULE_PARM(suppress_pollack, "0-1i"); /* ------------------------------------------------------------- */ static struct capi_driver_interface *di; /* ------------------------------------------------------------- */ static void c4_dispatch_tx(avmcard *card); /* ------------------------------------------------------------- */ #define DC21285_DRAM_A0MR 0x40000000 #define DC21285_DRAM_A1MR 0x40004000 #define DC21285_DRAM_A2MR 0x40008000 #define DC21285_DRAM_A3MR 0x4000C000 #define CAS_OFFSET 0x88 #define DC21285_ARMCSR_BASE 0x42000000 #define PCI_OUT_INT_STATUS 0x30 #define PCI_OUT_INT_MASK 0x34 #define MAILBOX_0 0x50 #define MAILBOX_1 0x54 #define MAILBOX_2 0x58 #define MAILBOX_3 0x5C #define DOORBELL 0x60 #define DOORBELL_SETUP 0x64 #define CHAN_1_CONTROL 0x90 #define CHAN_2_CONTROL 0xB0 #define DRAM_TIMING 0x10C #define DRAM_ADDR_SIZE_0 0x110 #define DRAM_ADDR_SIZE_1 0x114 #define DRAM_ADDR_SIZE_2 0x118 #define DRAM_ADDR_SIZE_3 0x11C #define SA_CONTROL 0x13C #define XBUS_CYCLE 0x148 #define XBUS_STROBE 0x14C #define DBELL_PCI_MASK 0x150 #define DBELL_SA_MASK 0x154 #define SDRAM_SIZE 0x1000000 /* ------------------------------------------------------------- */ #define MBOX_PEEK_POKE MAILBOX_0 #define DBELL_ADDR 0x01 #define DBELL_DATA 0x02 #define DBELL_RNWR 0x40 #define DBELL_INIT 0x80 /* ------------------------------------------------------------- */ #define MBOX_UP_ADDR MAILBOX_0 #define MBOX_UP_LEN MAILBOX_1 #define MBOX_DOWN_ADDR MAILBOX_2 #define MBOX_DOWN_LEN MAILBOX_3 #define DBELL_UP_HOST 0x00000100 #define DBELL_UP_ARM 0x00000200 #define DBELL_DOWN_HOST 0x00000400 #define DBELL_DOWN_ARM 0x00000800 #define DBELL_RESET_HOST 0x40000000 #define DBELL_RESET_ARM 0x80000000 /* ------------------------------------------------------------- */ #define DRAM_TIMING_DEF 0x001A01A5 #define DRAM_AD_SZ_DEF0 0x00000045 #define DRAM_AD_SZ_NULL 0x00000000 #define SA_CTL_ALLRIGHT 0x64AA0271 #define INIT_XBUS_CYCLE 0x100016DB #define INIT_XBUS_STROBE 0xF1F1F1F1 /* ------------------------------------------------------------- */ #define RESET_TIMEOUT (15*HZ) /* 15 sec */ #define PEEK_POKE_TIMEOUT (HZ/10) /* 0.1 sec */ /* ------------------------------------------------------------- */ #define c4outmeml(addr, value) writel(value, addr) #define c4inmeml(addr) readl(addr) #define c4outmemw(addr, value) writew(value, addr) #define c4inmemw(addr) readw(addr) #define c4outmemb(addr, value) writeb(value, addr) #define c4inmemb(addr) readb(addr) /* ------------------------------------------------------------- */ static inline int wait_for_doorbell(avmcard *card, unsigned long t) { unsigned long stop; stop = jiffies + t; while (c4inmeml(card->mbase+DOORBELL) != 0xffffffff) { if (!time_before(jiffies, stop)) return -1; } return 0; } static int c4_poke(avmcard *card, unsigned long off, unsigned long value) { if (wait_for_doorbell(card, HZ/10) < 0) return -1; c4outmeml(card->mbase+MBOX_PEEK_POKE, off); c4outmeml(card->mbase+DOORBELL, DBELL_ADDR); if (wait_for_doorbell(card, HZ/10) < 0) return -1; c4outmeml(card->mbase+MBOX_PEEK_POKE, value); c4outmeml(card->mbase+DOORBELL, DBELL_DATA | DBELL_ADDR); return 0; } static int c4_peek(avmcard *card, unsigned long off, unsigned long *valuep) { if (wait_for_doorbell(card, HZ/10) < 0) return -1; c4outmeml(card->mbase+MBOX_PEEK_POKE, off); c4outmeml(card->mbase+DOORBELL, DBELL_RNWR | DBELL_ADDR); if (wait_for_doorbell(card, HZ/10) < 0) return -1; *valuep = c4inmeml(card->mbase+MBOX_PEEK_POKE); return 0; } /* ------------------------------------------------------------- */ static int c4_load_t4file(avmcard *card, capiloaddatapart * t4file) { __u32 val; unsigned char *dp; int left, retval; __u32 loadoff = 0; dp = t4file->data; left = t4file->len; while (left >= sizeof(__u32)) { if (t4file->user) { retval = copy_from_user(&val, dp, sizeof(val)); if (retval) return -EFAULT; } else { memcpy(&val, dp, sizeof(val)); } if (c4_poke(card, loadoff, val)) { printk(KERN_ERR "%s: corrupted firmware file ?\n", card->name); return -EIO; } left -= sizeof(__u32); dp += sizeof(__u32); loadoff += sizeof(__u32); } if (left) { val = 0; if (t4file->user) { retval = copy_from_user(&val, dp, left); if (retval) return -EFAULT; } else { memcpy(&val, dp, left); } if (c4_poke(card, loadoff, val)) { printk(KERN_ERR "%s: corrupted firmware file ?\n", card->name); return -EIO; } } return 0; } /* ------------------------------------------------------------- */ static inline void _put_byte(void **pp, __u8 val) { __u8 *s = *pp; *s++ = val; *pp = s; } static inline void _put_word(void **pp, __u32 val) { __u8 *s = *pp; *s++ = val & 0xff; *s++ = (val >> 8) & 0xff; *s++ = (val >> 16) & 0xff; *s++ = (val >> 24) & 0xff; *pp = s; } static inline void _put_slice(void **pp, unsigned char *dp, unsigned int len) { unsigned i = len; _put_word(pp, i); while (i-- > 0) _put_byte(pp, *dp++); } static inline __u8 _get_byte(void **pp) { __u8 *s = *pp; __u8 val; val = *s++; *pp = s; return val; } static inline __u32 _get_word(void **pp) { __u8 *s = *pp; __u32 val; val = *s++; val |= (*s++ << 8); val |= (*s++ << 16); val |= (*s++ << 24); *pp = s; return val; } static inline __u32 _get_slice(void **pp, unsigned char *dp) { unsigned int len, i; len = i = _get_word(pp); while (i-- > 0) *dp++ = _get_byte(pp); return len; } /* ------------------------------------------------------------- */ static void c4_reset(avmcard *card) { unsigned long stop; c4outmeml(card->mbase+DOORBELL, DBELL_RESET_ARM); stop = jiffies + HZ*10; while (c4inmeml(card->mbase+DOORBELL) != 0xffffffff) { if (!time_before(jiffies, stop)) return; c4outmeml(card->mbase+DOORBELL, DBELL_ADDR); } c4_poke(card, DC21285_ARMCSR_BASE + CHAN_1_CONTROL, 0); c4_poke(card, DC21285_ARMCSR_BASE + CHAN_2_CONTROL, 0); } /* ------------------------------------------------------------- */ static int c4_detect(avmcard *card) { unsigned long stop, dummy; c4outmeml(card->mbase+PCI_OUT_INT_MASK, 0x0c); if (c4inmeml(card->mbase+PCI_OUT_INT_MASK) != 0x0c) return 1; c4outmeml(card->mbase+DOORBELL, DBELL_RESET_ARM); stop = jiffies + HZ*10; while (c4inmeml(card->mbase+DOORBELL) != 0xffffffff) { if (!time_before(jiffies, stop)) return 2; c4outmeml(card->mbase+DOORBELL, DBELL_ADDR); } c4_poke(card, DC21285_ARMCSR_BASE + CHAN_1_CONTROL, 0); c4_poke(card, DC21285_ARMCSR_BASE + CHAN_2_CONTROL, 0); c4outmeml(card->mbase+MAILBOX_0, 0x55aa55aa); if (c4inmeml(card->mbase+MAILBOX_0) != 0x55aa55aa) return 3; c4outmeml(card->mbase+MAILBOX_0, 0xaa55aa55); if (c4inmeml(card->mbase+MAILBOX_0) != 0xaa55aa55) return 4; if (c4_poke(card, DC21285_ARMCSR_BASE+DBELL_SA_MASK, 0)) return 5; if (c4_poke(card, DC21285_ARMCSR_BASE+DBELL_PCI_MASK, 0)) return 6; if (c4_poke(card, DC21285_ARMCSR_BASE+SA_CONTROL, SA_CTL_ALLRIGHT)) return 7; if (c4_poke(card, DC21285_ARMCSR_BASE+XBUS_CYCLE, INIT_XBUS_CYCLE)) return 8; if (c4_poke(card, DC21285_ARMCSR_BASE+XBUS_STROBE, INIT_XBUS_STROBE)) return 8; if (c4_poke(card, DC21285_ARMCSR_BASE+DRAM_TIMING, 0)) return 9; mdelay(1); if (c4_peek(card, DC21285_DRAM_A0MR, &dummy)) return 10; if (c4_peek(card, DC21285_DRAM_A1MR, &dummy)) return 11; if (c4_peek(card, DC21285_DRAM_A2MR, &dummy)) return 12; if (c4_peek(card, DC21285_DRAM_A3MR, &dummy)) return 13; if (c4_poke(card, DC21285_DRAM_A0MR+CAS_OFFSET, 0)) return 14; if (c4_poke(card, DC21285_DRAM_A1MR+CAS_OFFSET, 0)) return 15; if (c4_poke(card, DC21285_DRAM_A2MR+CAS_OFFSET, 0)) return 16; if (c4_poke(card, DC21285_DRAM_A3MR+CAS_OFFSET, 0)) return 17; mdelay(1); if (c4_poke(card, DC21285_ARMCSR_BASE+DRAM_TIMING, DRAM_TIMING_DEF)) return 18; if (c4_poke(card, DC21285_ARMCSR_BASE+DRAM_ADDR_SIZE_0,DRAM_AD_SZ_DEF0)) return 19; if (c4_poke(card, DC21285_ARMCSR_BASE+DRAM_ADDR_SIZE_1,DRAM_AD_SZ_NULL)) return 20; if (c4_poke(card, DC21285_ARMCSR_BASE+DRAM_ADDR_SIZE_2,DRAM_AD_SZ_NULL)) return 21; if (c4_poke(card, DC21285_ARMCSR_BASE+DRAM_ADDR_SIZE_3,DRAM_AD_SZ_NULL)) return 22; /* Transputer test */ if ( c4_poke(card, 0x000000, 0x11111111) || c4_poke(card, 0x400000, 0x22222222) || c4_poke(card, 0x800000, 0x33333333) || c4_poke(card, 0xC00000, 0x44444444)) return 23; if ( c4_peek(card, 0x000000, &dummy) || dummy != 0x11111111 || c4_peek(card, 0x400000, &dummy) || dummy != 0x22222222 || c4_peek(card, 0x800000, &dummy) || dummy != 0x33333333 || c4_peek(card, 0xC00000, &dummy) || dummy != 0x44444444) return 24; if ( c4_poke(card, 0x000000, 0x55555555) || c4_poke(card, 0x400000, 0x66666666) || c4_poke(card, 0x800000, 0x77777777) || c4_poke(card, 0xC00000, 0x88888888)) return 25; if ( c4_peek(card, 0x000000, &dummy) || dummy != 0x55555555 || c4_peek(card, 0x400000, &dummy) || dummy != 0x66666666 || c4_peek(card, 0x800000, &dummy) || dummy != 0x77777777 || c4_peek(card, 0xC00000, &dummy) || dummy != 0x88888888) return 26; return 0; } /* ------------------------------------------------------------- */ static void c4_dispatch_tx(avmcard *card) { avmcard_dmainfo *dma = card->dma; unsigned long flags; struct sk_buff *skb; __u8 cmd, subcmd; __u16 len; __u32 txlen; void *p; save_flags(flags); cli(); if (card->csr & DBELL_DOWN_ARM) { /* tx busy */ restore_flags(flags); return; } skb = skb_dequeue(&dma->send_queue); if (!skb) { #ifdef CONFIG_C4_DEBUG printk(KERN_DEBUG "%s: tx underrun\n", card->name); #endif restore_flags(flags); return; } len = CAPIMSG_LEN(skb->data); if (len) { cmd = CAPIMSG_COMMAND(skb->data); subcmd = CAPIMSG_SUBCOMMAND(skb->data); p = dma->sendbuf.dmabuf; if (CAPICMD(cmd, subcmd) == CAPI_DATA_B3_REQ) { __u16 dlen = CAPIMSG_DATALEN(skb->data); _put_byte(&p, SEND_DATA_B3_REQ); _put_slice(&p, skb->data, len); _put_slice(&p, skb->data + len, dlen); } else { _put_byte(&p, SEND_MESSAGE); _put_slice(&p, skb->data, len); } txlen = (__u8 *)p - (__u8 *)dma->sendbuf.dmabuf; #ifdef CONFIG_C4_DEBUG printk(KERN_DEBUG "%s: tx put msg len=%d\n", card->name, txlen); #endif } else { txlen = skb->len-2; #ifdef CONFIG_C4_POLLDEBUG if (skb->data[2] == SEND_POLLACK) printk(KERN_INFO "%s: ack to c4\n", card->name); #endif #ifdef CONFIG_C4_DEBUG printk(KERN_DEBUG "%s: tx put 0x%x len=%d\n", card->name, skb->data[2], txlen); #endif memcpy(dma->sendbuf.dmabuf, skb->data+2, skb->len-2); } txlen = (txlen + 3) & ~3; c4outmeml(card->mbase+MBOX_DOWN_ADDR, dma->sendbuf.dmaaddr); c4outmeml(card->mbase+MBOX_DOWN_LEN, txlen); card->csr |= DBELL_DOWN_ARM; c4outmeml(card->mbase+DOORBELL, DBELL_DOWN_ARM); restore_flags(flags); dev_kfree_skb_any(skb); } /* ------------------------------------------------------------- */ static void queue_pollack(avmcard *card) { struct sk_buff *skb; void *p; skb = alloc_skb(3, GFP_ATOMIC); if (!skb) { printk(KERN_CRIT "%s: no memory, lost poll ack\n", card->name); return; } p = skb->data; _put_byte(&p, 0); _put_byte(&p, 0); _put_byte(&p, SEND_POLLACK); skb_put(skb, (__u8 *)p - (__u8 *)skb->data); skb_queue_tail(&card->dma->send_queue, skb); c4_dispatch_tx(card); } /* ------------------------------------------------------------- */ static void c4_handle_rx(avmcard *card) { avmcard_dmainfo *dma = card->dma; struct capi_ctr *ctrl; avmctrl_info *cinfo; struct sk_buff *skb; void *p = dma->recvbuf.dmabuf; __u32 ApplId, MsgLen, DataB3Len, NCCI, WindowSize; __u8 b1cmd = _get_byte(&p); __u32 cidx; #ifdef CONFIG_C4_DEBUG printk(KERN_DEBUG "%s: rx 0x%x len=%lu\n", card->name, b1cmd, (unsigned long)dma->recvlen); #endif switch (b1cmd) { case RECEIVE_DATA_B3_IND: ApplId = (unsigned) _get_word(&p); MsgLen = _get_slice(&p, card->msgbuf); DataB3Len = _get_slice(&p, card->databuf); cidx = CAPIMSG_CONTROLLER(card->msgbuf)-card->cardnr; if (cidx >= card->nlogcontr) cidx = 0; ctrl = card->ctrlinfo[cidx].capi_ctrl; if (MsgLen < 30) { /* not CAPI 64Bit */ memset(card->msgbuf+MsgLen, 0, 30-MsgLen); MsgLen = 30; CAPIMSG_SETLEN(card->msgbuf, 30); } if (!(skb = alloc_skb(DataB3Len+MsgLen, GFP_ATOMIC))) { printk(KERN_ERR "%s: incoming packet dropped\n", card->name); } else { memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen); memcpy(skb_put(skb, DataB3Len), card->databuf, DataB3Len); ctrl->handle_capimsg(ctrl, ApplId, skb); } break; case RECEIVE_MESSAGE: ApplId = (unsigned) _get_word(&p); MsgLen = _get_slice(&p, card->msgbuf); cidx = CAPIMSG_CONTROLLER(card->msgbuf)-card->cardnr; if (cidx >= card->nlogcontr) cidx = 0; ctrl = card->ctrlinfo[cidx].capi_ctrl; if (!(skb = alloc_skb(MsgLen, GFP_ATOMIC))) { printk(KERN_ERR "%s: incoming packet dropped\n", card->name); } else { memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen); ctrl->handle_capimsg(ctrl, ApplId, skb); } break; case RECEIVE_NEW_NCCI: ApplId = _get_word(&p); NCCI = _get_word(&p); WindowSize = _get_word(&p); cidx = (NCCI&0x7f) - card->cardnr; if (cidx >= card->nlogcontr) cidx = 0; ctrl = card->ctrlinfo[cidx].capi_ctrl; ctrl->new_ncci(ctrl, ApplId, NCCI, WindowSize); break; case RECEIVE_FREE_NCCI: ApplId = _get_word(&p); NCCI = _get_word(&p); if (NCCI != 0xffffffff) { cidx = (NCCI&0x7f) - card->cardnr; if (cidx >= card->nlogcontr) cidx = 0; ctrl = card->ctrlinfo[cidx].capi_ctrl; if (ctrl) ctrl->free_ncci(ctrl, ApplId, NCCI); } else { for (cidx=0; cidx < 4; cidx++) { ctrl = card->ctrlinfo[cidx].capi_ctrl; if (ctrl) ctrl->appl_released(ctrl, ApplId); } } break; case RECEIVE_START: #ifdef CONFIG_C4_POLLDEBUG printk(KERN_INFO "%s: poll from c4\n", card->name); #endif if (!suppress_pollack) queue_pollack(card); for (cidx=0; cidx < 4; cidx++) { ctrl = card->ctrlinfo[cidx].capi_ctrl; if (ctrl) ctrl->resume_output(ctrl); } break; case RECEIVE_STOP: for (cidx=0; cidx < 4; cidx++) { ctrl = card->ctrlinfo[cidx].capi_ctrl; if (ctrl) ctrl->suspend_output(ctrl); } break; case RECEIVE_INIT: cidx = card->nlogcontr; if (cidx >= 4 || !card->ctrlinfo[cidx].capi_ctrl) { printk(KERN_ERR "%s: card with %d controllers ??\n", card->name, cidx+1); break; } card->nlogcontr++; cinfo = &card->ctrlinfo[cidx]; ctrl = cinfo->capi_ctrl; cinfo->versionlen = _get_slice(&p, cinfo->versionbuf); b1_parse_version(cinfo); printk(KERN_INFO "%s: %s-card (%s) now active\n", card->name, cinfo->version[VER_CARDTYPE], cinfo->version[VER_DRIVER]); ctrl->ready(cinfo->capi_ctrl); break; case RECEIVE_TASK_READY: ApplId = (unsigned) _get_word(&p); MsgLen = _get_slice(&p, card->msgbuf); card->msgbuf[MsgLen] = 0; while ( MsgLen > 0 && ( card->msgbuf[MsgLen-1] == '\n' || card->msgbuf[MsgLen-1] == '\r')) { card->msgbuf[MsgLen-1] = 0; MsgLen--; } printk(KERN_INFO "%s: task %d \"%s\" ready.\n", card->name, ApplId, card->msgbuf); break; case RECEIVE_DEBUGMSG: MsgLen = _get_slice(&p, card->msgbuf); card->msgbuf[MsgLen] = 0; while ( MsgLen > 0 && ( card->msgbuf[MsgLen-1] == '\n' || card->msgbuf[MsgLen-1] == '\r')) { card->msgbuf[MsgLen-1] = 0; MsgLen--; } printk(KERN_INFO "%s: DEBUG: %s\n", card->name, card->msgbuf); break; default: printk(KERN_ERR "%s: c4_interrupt: 0x%x ???\n", card->name, b1cmd); return; } } /* ------------------------------------------------------------- */ static void c4_handle_interrupt(avmcard *card) { __u32 status = c4inmeml(card->mbase+DOORBELL); if (status & DBELL_RESET_HOST) { int i; c4outmeml(card->mbase+PCI_OUT_INT_MASK, 0x0c); if (card->nlogcontr == 0) return; printk(KERN_ERR "%s: unexpected reset\n", card->name); for (i=0; i < 4; i++) { avmctrl_info *cinfo = &card->ctrlinfo[i]; memset(cinfo->version, 0, sizeof(cinfo->version)); if (cinfo->capi_ctrl) cinfo->capi_ctrl->reseted(cinfo->capi_ctrl); } card->nlogcontr = 0; return; } status &= (DBELL_UP_HOST | DBELL_DOWN_HOST); if (!status) return; c4outmeml(card->mbase+DOORBELL, status); if ((status & DBELL_UP_HOST) != 0) { card->dma->recvlen = c4inmeml(card->mbase+MBOX_UP_LEN); c4outmeml(card->mbase+MBOX_UP_LEN, 0); c4_handle_rx(card); card->dma->recvlen = 0; c4outmeml(card->mbase+MBOX_UP_LEN, card->dma->recvbuf.size); c4outmeml(card->mbase+DOORBELL, DBELL_UP_ARM); } if ((status & DBELL_DOWN_HOST) != 0) { card->csr &= ~DBELL_DOWN_ARM; c4_dispatch_tx(card); } else if (card->csr & DBELL_DOWN_HOST) { if (c4inmeml(card->mbase+MBOX_DOWN_LEN) == 0) { card->csr &= ~DBELL_DOWN_ARM; c4_dispatch_tx(card); } } } static void c4_interrupt(int interrupt, void *devptr, struct pt_regs *regs) { avmcard *card; card = (avmcard *) devptr; if (!card) { printk(KERN_WARNING "%s: interrupt: wrong device\n", card->name); return; } if (card->interrupt) { printk(KERN_ERR "%s: reentering interrupt hander\n", card->name); return; } card->interrupt = 1; c4_handle_interrupt(card); card->interrupt = 0; } /* ------------------------------------------------------------- */ static void c4_send_init(avmcard *card) { struct sk_buff *skb; void *p; skb = alloc_skb(15, GFP_ATOMIC); if (!skb) { printk(KERN_CRIT "%s: no memory, lost register appl.\n", card->name); return; } p = skb->data; _put_byte(&p, 0); _put_byte(&p, 0); _put_byte(&p, SEND_INIT); _put_word(&p, CAPI_MAXAPPL); _put_word(&p, AVM_NCCI_PER_CHANNEL*30); _put_word(&p, card->cardnr - 1); skb_put(skb, (__u8 *)p - (__u8 *)skb->data); skb_queue_tail(&card->dma->send_queue, skb); c4_dispatch_tx(card); } static int queue_sendconfigword(avmcard *card, __u32 val) { struct sk_buff *skb; void *p; skb = alloc_skb(3+4, GFP_ATOMIC); if (!skb) { printk(KERN_CRIT "%s: no memory, send config\n", card->name); return -ENOMEM; } p = skb->data; _put_byte(&p, 0); _put_byte(&p, 0); _put_byte(&p, SEND_CONFIG); _put_word(&p, val); skb_put(skb, (__u8 *)p - (__u8 *)skb->data); skb_queue_tail(&card->dma->send_queue, skb); c4_dispatch_tx(card); return 0; } static int queue_sendconfig(avmcard *card, char cval[4]) { struct sk_buff *skb; void *p; skb = alloc_skb(3+4, GFP_ATOMIC); if (!skb) { printk(KERN_CRIT "%s: no memory, send config\n", card->name); return -ENOMEM; } p = skb->data; _put_byte(&p, 0); _put_byte(&p, 0); _put_byte(&p, SEND_CONFIG); _put_byte(&p, cval[0]); _put_byte(&p, cval[1]); _put_byte(&p, cval[2]); _put_byte(&p, cval[3]); skb_put(skb, (__u8 *)p - (__u8 *)skb->data); skb_queue_tail(&card->dma->send_queue, skb); c4_dispatch_tx(card); return 0; } static int c4_send_config(avmcard *card, capiloaddatapart * config) { __u8 val[4]; unsigned char *dp; int left, retval; if ((retval = queue_sendconfigword(card, 1)) != 0) return retval; if ((retval = queue_sendconfigword(card, config->len)) != 0) return retval; dp = config->data; left = config->len; while (left >= sizeof(__u32)) { if (config->user) { retval = copy_from_user(val, dp, sizeof(val)); if (retval) return -EFAULT; } else { memcpy(val, dp, sizeof(val)); } if ((retval = queue_sendconfig(card, val)) != 0) return retval; left -= sizeof(val); dp += sizeof(val); } if (left) { memset(val, 0, sizeof(val)); if (config->user) { retval = copy_from_user(&val, dp, left); if (retval) return -EFAULT; } else { memcpy(&val, dp, left); } if ((retval = queue_sendconfig(card, val)) != 0) return retval; } return 0; } static int c4_load_firmware(struct capi_ctr *ctrl, capiloaddata *data) { avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); avmcard *card = cinfo->card; unsigned long flags; int retval; if ((retval = c4_load_t4file(card, &data->firmware))) { printk(KERN_ERR "%s: failed to load t4file!!\n", card->name); c4_reset(card); return retval; } save_flags(flags); cli(); card->csr = 0; c4outmeml(card->mbase+MBOX_UP_LEN, 0); c4outmeml(card->mbase+MBOX_DOWN_LEN, 0); c4outmeml(card->mbase+DOORBELL, DBELL_INIT); mdelay(1); c4outmeml(card->mbase+DOORBELL, DBELL_UP_HOST | DBELL_DOWN_HOST | DBELL_RESET_HOST); c4outmeml(card->mbase+PCI_OUT_INT_MASK, 0x08); card->dma->recvlen = 0; c4outmeml(card->mbase+MBOX_UP_ADDR, card->dma->recvbuf.dmaaddr); c4outmeml(card->mbase+MBOX_UP_LEN, card->dma->recvbuf.size); c4outmeml(card->mbase+DOORBELL, DBELL_UP_ARM); restore_flags(flags); if (data->configuration.len > 0 && data->configuration.data) { retval = c4_send_config(card, &data->configuration); if (retval) { printk(KERN_ERR "%s: failed to set config!!\n", card->name); c4_reset(card); return retval; } } c4_send_init(card); return 0; } void c4_reset_ctr(struct capi_ctr *ctrl) { avmcard *card = ((avmctrl_info *)(ctrl->driverdata))->card; avmctrl_info *cinfo; int i; c4_reset(card); for (i=0; i < 4; i++) { cinfo = &card->ctrlinfo[i]; memset(cinfo->version, 0, sizeof(cinfo->version)); if (cinfo->capi_ctrl) cinfo->capi_ctrl->reseted(cinfo->capi_ctrl); } card->nlogcontr = 0; } static void c4_remove_ctr(struct capi_ctr *ctrl) { avmcard *card = ((avmctrl_info *)(ctrl->driverdata))->card; avmctrl_info *cinfo; int i; c4_reset(card); for (i=0; i < 4; i++) { cinfo = &card->ctrlinfo[i]; if (cinfo->capi_ctrl) { di->detach_ctr(cinfo->capi_ctrl); cinfo->capi_ctrl = NULL; } } free_irq(card->irq, card); iounmap(card->mbase); release_region(card->port, AVMB1_PORTLEN); ctrl->driverdata = 0; kfree(card->ctrlinfo); avmcard_dma_free(card->dma); kfree(card); MOD_DEC_USE_COUNT; } /* ------------------------------------------------------------- */ void c4_register_appl(struct capi_ctr *ctrl, __u16 appl, capi_register_params *rp) { avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); avmcard *card = cinfo->card; struct sk_buff *skb; int want = rp->level3cnt; int nconn; void *p; if (ctrl->cnr == card->cardnr) { if (want > 0) nconn = want; else nconn = ctrl->profile.nbchannel * 4 * -want; if (nconn == 0) nconn = ctrl->profile.nbchannel * 4; skb = alloc_skb(23, GFP_ATOMIC); if (!skb) { printk(KERN_CRIT "%s: no memory, lost register appl.\n", card->name); return; } p = skb->data; _put_byte(&p, 0); _put_byte(&p, 0); _put_byte(&p, SEND_REGISTER); _put_word(&p, appl); _put_word(&p, 1024 * (nconn+1)); _put_word(&p, nconn); _put_word(&p, rp->datablkcnt); _put_word(&p, rp->datablklen); skb_put(skb, (__u8 *)p - (__u8 *)skb->data); skb_queue_tail(&card->dma->send_queue, skb); c4_dispatch_tx(card); } ctrl->appl_registered(ctrl, appl); } /* ------------------------------------------------------------- */ void c4_release_appl(struct capi_ctr *ctrl, __u16 appl) { avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); avmcard *card = cinfo->card; struct sk_buff *skb; void *p; if (ctrl->cnr == card->cardnr) { skb = alloc_skb(7, GFP_ATOMIC); if (!skb) { printk(KERN_CRIT "%s: no memory, lost release appl.\n", card->name); return; } p = skb->data; _put_byte(&p, 0); _put_byte(&p, 0); _put_byte(&p, SEND_RELEASE); _put_word(&p, appl); skb_put(skb, (__u8 *)p - (__u8 *)skb->data); skb_queue_tail(&card->dma->send_queue, skb); c4_dispatch_tx(card); } } /* ------------------------------------------------------------- */ static void c4_send_message(struct capi_ctr *ctrl, struct sk_buff *skb) { avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); avmcard *card = cinfo->card; skb_queue_tail(&card->dma->send_queue, skb); c4_dispatch_tx(card); } /* ------------------------------------------------------------- */ static char *c4_procinfo(struct capi_ctr *ctrl) { avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); if (!cinfo) return ""; sprintf(cinfo->infobuf, "%s %s 0x%x %d 0x%lx", cinfo->cardname[0] ? cinfo->cardname : "-", cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-", cinfo->card ? cinfo->card->port : 0x0, cinfo->card ? cinfo->card->irq : 0, cinfo->card ? cinfo->card->membase : 0 ); return cinfo->infobuf; } static int c4_read_proc(char *page, char **start, off_t off, int count, int *eof, struct capi_ctr *ctrl) { avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); avmcard *card = cinfo->card; __u8 flag; int len = 0; char *s; len += sprintf(page+len, "%-16s %s\n", "name", card->name); len += sprintf(page+len, "%-16s 0x%x\n", "io", card->port); len += sprintf(page+len, "%-16s %d\n", "irq", card->irq); len += sprintf(page+len, "%-16s 0x%lx\n", "membase", card->membase); switch (card->cardtype) { case avm_b1isa: s = "B1 ISA"; break; case avm_b1pci: s = "B1 PCI"; break; case avm_b1pcmcia: s = "B1 PCMCIA"; break; case avm_m1: s = "M1"; break; case avm_m2: s = "M2"; break; case avm_t1isa: s = "T1 ISA (HEMA)"; break; case avm_t1pci: s = "T1 PCI"; break; case avm_c4: s = "C4"; break; case avm_c2: s = "C2"; break; default: s = "???"; break; } len += sprintf(page+len, "%-16s %s\n", "type", s); if ((s = cinfo->version[VER_DRIVER]) != 0) len += sprintf(page+len, "%-16s %s\n", "ver_driver", s); if ((s = cinfo->version[VER_CARDTYPE]) != 0) len += sprintf(page+len, "%-16s %s\n", "ver_cardtype", s); if ((s = cinfo->version[VER_SERIAL]) != 0) len += sprintf(page+len, "%-16s %s\n", "ver_serial", s); if (card->cardtype != avm_m1) { flag = ((__u8 *)(ctrl->profile.manu))[3]; if (flag) len += sprintf(page+len, "%-16s%s%s%s%s%s%s%s\n", "protocol", (flag & 0x01) ? " DSS1" : "", (flag & 0x02) ? " CT1" : "", (flag & 0x04) ? " VN3" : "", (flag & 0x08) ? " NI1" : "", (flag & 0x10) ? " AUSTEL" : "", (flag & 0x20) ? " ESS" : "", (flag & 0x40) ? " 1TR6" : "" ); } if (card->cardtype != avm_m1) { flag = ((__u8 *)(ctrl->profile.manu))[5]; if (flag) len += sprintf(page+len, "%-16s%s%s%s%s\n", "linetype", (flag & 0x01) ? " point to point" : "", (flag & 0x02) ? " point to multipoint" : "", (flag & 0x08) ? " leased line without D-channel" : "", (flag & 0x04) ? " leased line with D-channel" : "" ); } len += sprintf(page+len, "%-16s %s\n", "cardname", cinfo->cardname); if (off+count >= len) *eof = 1; if (len < off) return 0; *start = page + off; return ((count < len-off) ? count : len-off); } /* ------------------------------------------------------------- */ static int c4_add_card(struct capi_driver *driver, struct capicardparams *p, struct pci_dev *dev, int nr) { avmctrl_info *cinfo; avmcard *card; int retval; int i; MOD_INC_USE_COUNT; retval = -ENOMEM; card = kmalloc(sizeof(avmcard), GFP_ATOMIC); if (!card) { printk(KERN_WARNING "%s: no memory.\n", driver->name); goto err; } memset(card, 0, sizeof(avmcard)); card->dma = avmcard_dma_alloc(driver->name, dev, 2048+128, 2048+128); if (!card->dma) { printk(KERN_WARNING "%s: no memory.\n", driver->name); goto err_kfree; } cinfo = (avmctrl_info *) kmalloc(sizeof(avmctrl_info)*4, GFP_ATOMIC); if (!cinfo) { printk(KERN_WARNING "%s: no memory.\n", driver->name); goto err_dma_free; } memset(cinfo, 0, sizeof(avmctrl_info)*4); card->ctrlinfo = cinfo; for (i=0; i < 4; i++) { cinfo = &card->ctrlinfo[i]; cinfo->card = card; } sprintf(card->name, "%s-%x", driver->name, p->port); card->port = p->port; card->irq = p->irq; card->membase = p->membase; card->cardtype = nr == 4 ? avm_c4 : avm_c2; if (!request_region(card->port, AVMB1_PORTLEN, card->name)) { printk(KERN_WARNING "%s: ports 0x%03x-0x%03x in use.\n", driver->name, card->port, card->port + AVMB1_PORTLEN); retval = -EBUSY; goto err_kfree_ctrlinfo; } card->mbase = ioremap_nocache(card->membase, 128); if (card->mbase == 0) { printk(KERN_NOTICE "%s: can't remap memory at 0x%lx\n", driver->name, card->membase); retval = -EIO; goto err_release_region; } retval = c4_detect(card); if (retval != 0) { printk(KERN_NOTICE "%s: NO card at 0x%x (%d)\n", driver->name, card->port, retval); retval = -EIO; goto err_unmap; } c4_reset(card); retval = request_irq(card->irq, c4_interrupt, SA_SHIRQ, card->name, card); if (retval) { printk(KERN_ERR "%s: unable to get IRQ %d.\n", driver->name, card->irq); retval = -EBUSY; goto err_unmap; } for (i=0; i < nr ; i++) { cinfo = &card->ctrlinfo[i]; cinfo->card = card; cinfo->capi_ctrl = di->attach_ctr(driver, card->name, cinfo); if (!cinfo->capi_ctrl) { printk(KERN_ERR "%s: attach controller failed (%d).\n", driver->name, i); for (i--; i >= 0; i--) { cinfo = &card->ctrlinfo[i]; di->detach_ctr(cinfo->capi_ctrl); } goto err_free_irq; } if (i == 0) card->cardnr = cinfo->capi_ctrl->cnr; } printk(KERN_INFO "%s: AVM C%d at i/o %#x, irq %d, mem %#lx\n", driver->name, nr, card->port, card->irq, card->membase); return 0; err_free_irq: free_irq(card->irq, card); err_unmap: iounmap(card->mbase); err_release_region: release_region(card->port, AVMB1_PORTLEN); err_kfree_ctrlinfo: kfree(card->ctrlinfo); err_dma_free: avmcard_dma_free(card->dma); err_kfree: kfree(card); err: MOD_DEC_USE_COUNT; return retval; } /* ------------------------------------------------------------- */ static struct capi_driver c2_driver = { name: "c2", revision: "0.0", load_firmware: c4_load_firmware, reset_ctr: c4_reset_ctr, remove_ctr: c4_remove_ctr, register_appl: c4_register_appl, release_appl: c4_release_appl, send_message: c4_send_message, procinfo: c4_procinfo, ctr_read_proc: c4_read_proc, driver_read_proc: 0, /* use standard driver_read_proc */ add_card: 0, /* no add_card function */ }; static struct capi_driver c4_driver = { name: "c4", revision: "0.0", load_firmware: c4_load_firmware, reset_ctr: c4_reset_ctr, remove_ctr: c4_remove_ctr, register_appl: c4_register_appl, release_appl: c4_release_appl, send_message: c4_send_message, procinfo: c4_procinfo, ctr_read_proc: c4_read_proc, driver_read_proc: 0, /* use standard driver_read_proc */ add_card: 0, /* no add_card function */ }; static int c4_attach_driver (struct capi_driver * driver) { char *p; if ((p = strchr(revision, ':')) != 0 && p[1]) { strncpy(driver->revision, p + 2, sizeof(driver->revision)); driver->revision[sizeof(driver->revision)-1] = 0; if ((p = strchr(driver->revision, '$')) != 0 && p > driver->revision) *(p-1) = 0; } printk(KERN_INFO "%s: revision %s\n", driver->name, driver->revision); di = attach_capi_driver(driver); if (!di) { printk(KERN_ERR "%s: failed to attach capi_driver\n", driver->name); MOD_DEC_USE_COUNT; return -ENODEV; } return 0; } static int __devinit c4_probe(struct pci_dev *dev, const struct pci_device_id *ent) { int nr = ent->driver_data; struct capi_driver *driver = (nr == 2) ? &c2_driver : &c4_driver; int retval = 0; struct capicardparams param; if (pci_enable_device(dev) < 0) { printk(KERN_ERR "%s: failed to enable AVM-C%d\n", driver->name, nr); return -ENODEV; } pci_set_master(dev); param.port = pci_resource_start(dev, 1); param.irq = dev->irq; param.membase = pci_resource_start(dev, 0); printk(KERN_INFO "%s: PCI BIOS reports AVM-C%d at i/o %#x, irq %d, mem %#x\n", driver->name, nr, param.port, param.irq, param.membase); retval = c4_add_card(driver, ¶m, dev, nr); if (retval != 0) { printk(KERN_ERR "%s: no AVM-C%d at i/o %#x, irq %d detected, mem %#x\n", driver->name, nr, param.port, param.irq, param.membase); return -ENODEV; } return 0; } static struct pci_driver c4_pci_driver = { name: "c4", id_table: c4_pci_tbl, probe: c4_probe, }; static int __init c4_init(void) { int retval; int ncards; MOD_INC_USE_COUNT; retval = c4_attach_driver (&c4_driver); if (retval) { MOD_DEC_USE_COUNT; return retval; } retval = c4_attach_driver (&c2_driver); if (retval) { MOD_DEC_USE_COUNT; return retval; } ncards = pci_register_driver(&c4_pci_driver); if (ncards) { printk(KERN_INFO "%s: %d C4/C2 card(s) detected\n", c4_driver.name, ncards); MOD_DEC_USE_COUNT; return 0; } printk(KERN_ERR "%s: NO C4/C2 card detected\n", c4_driver.name); pci_unregister_driver(&c4_pci_driver); detach_capi_driver(&c4_driver); detach_capi_driver(&c2_driver); MOD_DEC_USE_COUNT; return -ENODEV; } static void __exit c4_exit(void) { pci_unregister_driver(&c4_pci_driver); detach_capi_driver(&c2_driver); detach_capi_driver(&c4_driver); } module_init(c4_init); module_exit(c4_exit); |