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 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 | /* * * (c) 1999 by Computone Corporation * ******************************************************************************** * * PACKAGE: Linux tty Device Driver for IntelliPort family of multiport * serial I/O controllers. * * DESCRIPTION: Mainline code for the device driver * *******************************************************************************/ /************/ /* Includes */ /************/ #include <linux/config.h> #include <linux/module.h> #include <linux/version.h> #include <linux/ctype.h> #include <linux/string.h> #include <linux/fcntl.h> #include <linux/errno.h> #include <linux/signal.h> #include <linux/sched.h> #include <linux/timer.h> #include <linux/interrupt.h> #include <linux/pci.h> #include <linux/mm.h> #include <linux/malloc.h> #include <linux/major.h> #include <linux/wait.h> #include <linux/tty.h> #include <linux/tty_flip.h> #include <linux/termios.h> #include <linux/tty_driver.h> #include <linux/serial.h> #include <linux/ptrace.h> #include <linux/ioport.h> #include <linux/cdk.h> #include <linux/comstats.h> #include <linux/delay.h> #include <asm/system.h> #include <asm/io.h> #include <asm/irq.h> #include <asm/bitops.h> #include <linux/vmalloc.h> #include <linux/init.h> #include <asm/serial.h> #include <asm/uaccess.h> #define pcibios_strerror(status) \ printk( KERN_ERR "IP2: PCI error 0x%x \n", status ); #include "./ip2/ip2types.h" #include "./ip2/ip2trace.h" #include "./ip2/ip2ioctl.h" #include "./ip2/ip2.h" #include "./ip2/i2ellis.h" #include "./ip2/i2lib.h" /***************** * /proc/ip2mem * *****************/ #include <linux/proc_fs.h> static int ip2_read_procmem(char *, char **, off_t, int); int ip2_read_proc(char *, char **, off_t, int, int *, void * ); /********************/ /* Type Definitions */ /********************/ /*************/ /* Constants */ /*************/ /* String constants to identify ourselves */ static char *pcName = "Computone IntelliPort Plus multiport driver"; static char *pcVersion = "1.2.4"; /* String constants for port names */ static char *pcDriver_name = "ip2"; static char *pcTty = "ttyf"; static char *pcCallout = "cuf"; static char *pcIpl = "ip2ipl"; /* Serial subtype definitions */ #define SERIAL_TYPE_NORMAL 1 #define SERIAL_TYPE_CALLOUT 2 // cheezy kludge or genius - you decide? int ip2_loadmain(int *, int *, unsigned char *, int); static unsigned char *Fip_firmware; static int Fip_firmware_size; /***********************/ /* Function Prototypes */ /***********************/ /* Global module entry functions */ #ifdef MODULE int init_module(void); void cleanup_module(void); #endif int old_ip2_init(void); /* Private (static) functions */ static int ip2_open(PTTY, struct file *); static void ip2_close(PTTY, struct file *); static int ip2_write(PTTY, int, const unsigned char *, int); static void ip2_putchar(PTTY, unsigned char); static void ip2_flush_chars(PTTY); static int ip2_write_room(PTTY); static int ip2_chars_in_buf(PTTY); static void ip2_flush_buffer(PTTY); static int ip2_ioctl(PTTY, struct file *, UINT, ULONG); static void ip2_set_termios(PTTY, struct termios *); static void ip2_set_line_discipline(PTTY); static void ip2_throttle(PTTY); static void ip2_unthrottle(PTTY); static void ip2_stop(PTTY); static void ip2_start(PTTY); static void ip2_hangup(PTTY); static void set_irq(int, int); static void ip2_interrupt(int irq, void *dev_id, struct pt_regs * regs); static void ip2_poll(unsigned long arg); static inline void service_all_boards(void); static inline void do_input(i2ChanStrPtr pCh); static inline void do_status(i2ChanStrPtr pCh); static void ip2_wait_until_sent(PTTY,int); static void set_params (i2ChanStrPtr, struct termios *); static int get_modem_info(i2ChanStrPtr, unsigned int *); static int set_modem_info(i2ChanStrPtr, unsigned int, unsigned int *); static int get_serial_info(i2ChanStrPtr, struct serial_struct *); static int set_serial_info(i2ChanStrPtr, struct serial_struct *); static ssize_t ip2_ipl_read(struct file *, char *, size_t, loff_t *) ; static ssize_t ip2_ipl_write(struct file *, const char *, size_t, loff_t *); static int ip2_ipl_ioctl(struct inode *, struct file *, UINT, ULONG); static int ip2_ipl_open(struct inode *, struct file *); void ip2trace(unsigned short,unsigned char,unsigned char,unsigned long,...); static int DumpTraceBuffer(char *, int); static int DumpFifoBuffer( char *, int); static void ip2_init_board(int); static unsigned short find_eisa_board(int); /***************/ /* Static Data */ /***************/ static struct tty_driver ip2_tty_driver; static struct tty_driver ip2_callout_driver; static int ref_count; /* Here, then is a table of board pointers which the interrupt routine should * scan through to determine who it must service. */ static unsigned short i2nBoards = 0; // Number of boards here static i2eBordStrPtr i2BoardPtrTable[IP2_MAX_BOARDS]; static i2ChanStrPtr DevTable[IP2_MAX_PORTS]; //DevTableMem just used to save addresses for kfree static void *DevTableMem[IP2_MAX_BOARDS] = {NULL,NULL,NULL,NULL}; static struct tty_struct * TtyTable[IP2_MAX_PORTS]; static struct termios * Termios[IP2_MAX_PORTS]; static struct termios * TermiosLocked[IP2_MAX_PORTS]; /* This is the driver descriptor for the ip2ipl device, which is used to * download the loadware to the boards. */ static struct file_operations ip2_ipl = { read: ip2_ipl_read, write: ip2_ipl_write, ioctl: ip2_ipl_ioctl, open: ip2_ipl_open, }; static long irq_counter = 0; static long bh_counter = 0; // Use immediate queue to service interrupts //#define USE_IQI // PCI&2.2 needs work //#define USE_IQ // PCI&2.2 needs work /* The timer_list entry for our poll routine. If interrupt operation is not * selected, the board is serviced periodically to see if anything needs doing. */ #define POLL_TIMEOUT (jiffies + 1) static struct timer_list PollTimer = { NULL, NULL, 0, 0, ip2_poll }; // next, prev, expires,data, func() static char TimerOn = 0; #ifdef IP2DEBUG_TRACE /* Trace (debug) buffer data */ #define TRACEMAX 1000 static unsigned long tracebuf[TRACEMAX]; static int tracestuff = 0; static int tracestrip = 0; static int tracewrap = 0; #endif /**********/ /* Macros */ /**********/ #if defined(MODULE) && defined(IP2DEBUG_OPEN) #define DBG_CNT(s) printk(KERN_DEBUG "(%s): [%x] refc=%d, ttyc=%d, modc=%x -> %s\n", \ kdevname(tty->device),(pCh->flags),ref_count, \ tty->count,/*GET_USE_COUNT(module)*/0,s) #else #define DBG_CNT(s) #endif #define MIN(a,b) ( ( (a) < (b) ) ? (a) : (b) ) #define MAX(a,b) ( ( (a) > (b) ) ? (a) : (b) ) /********/ /* Code */ /********/ #include "./ip2/i2ellis.c" /* Extremely low-level interface services */ #include "./ip2/i2cmd.c" /* Standard loadware command definitions */ #include "./ip2/i2lib.c" /* High level interface services */ /* Configuration area for modprobe */ #ifdef MODULE MODULE_AUTHOR("Doug McNash"); MODULE_DESCRIPTION("Computone IntelliPort Plus Driver"); #endif /* MODULE */ static int poll_only = 0; static int Pci_index = 0; static int Eisa_irq = 0; static int Eisa_slot = 0; static int iindx = 0; static char rirqs[IP2_MAX_BOARDS] = {0,}; static int Valid_Irqs[] = { 3, 4, 5, 7, 10, 11, 12, 15, 0}; /******************************************************************************/ /* Initialisation Section */ /******************************************************************************/ int ip2_loadmain(int *iop, int *irqp, unsigned char *firmware, int firmsize) { int i; /* process command line arguments to modprobe or insmod i.e. iop & irqp */ /* otherwise ip2config is initialized by what's in ip2/ip2.h */ /* command line trumps initialization in ip2.h */ /* first two args are null if builtin to kernel */ if ((irqp != NULL) || (iop != NULL)) { for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { if (irqp && irqp[i]) { ip2config.irq[i] = irqp[i]; } if (iop && iop[i]) { ip2config.addr[i] = iop[i]; } } } Fip_firmware = firmware; Fip_firmware_size = firmsize; return old_ip2_init(); } // Some functions to keep track of what irq's we have static int __init is_valid_irq(int irq) { int *i = Valid_Irqs; while ((*i != 0) && (*i != irq)) { i++; } return (*i); } static void __init mark_requested_irq( char irq ) { rirqs[iindx++] = irq; } static int __init clear_requested_irq( char irq ) { int i; for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { if (rirqs[i] == irq) { rirqs[i] = 0; return 1; } } return 0; } static int __init have_requested_irq( char irq ) { // array init to zeros so 0 irq will not be requested as a side effect int i; for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { if (rirqs[i] == irq) return 1; } return 0; } /******************************************************************************/ /* Function: init_module() */ /* Parameters: None */ /* Returns: Success (0) */ /* */ /* Description: */ /* This is a required entry point for an installable module. It simply calls */ /* the driver initialisation function and returns what it returns. */ /******************************************************************************/ #ifdef MODULE int init_module(void) { #ifdef IP2DEBUG_INIT printk (KERN_DEBUG "Loading module ...\n" ); #endif //was return old_ip2_init(); return 0; } #endif /* MODULE */ /******************************************************************************/ /* Function: cleanup_module() */ /* Parameters: None */ /* Returns: Nothing */ /* */ /* Description: */ /* This is a required entry point for an installable module. It has to return */ /* the device and the driver to a passive state. It should not be necessary */ /* to reset the board fully, especially as the loadware is downloaded */ /* externally rather than in the driver. We just want to disable the board */ /* and clear the loadware to a reset state. To allow this there has to be a */ /* way to detect whether the board has the loadware running at init time to */ /* handle subsequent installations of the driver. All memory allocated by the */ /* driver should be returned since it may be unloaded from memory. */ /******************************************************************************/ #ifdef MODULE void cleanup_module(void) { int err; int i; #ifdef IP2DEBUG_INIT printk (KERN_DEBUG "Unloading %s: version %s\n", pcName, pcVersion ); #endif /* Stop poll timer if we had one. */ if ( TimerOn ) { del_timer ( &PollTimer ); TimerOn = 0; } /* Reset the boards we have. */ for( i = 0; i < IP2_MAX_BOARDS; ++i ) { if ( i2BoardPtrTable[i] ) { iiReset ( i2BoardPtrTable[i] ); } } /* The following is done at most once, if any boards were installed. */ for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { if ( i2BoardPtrTable[i] ) { iiResetDelay( i2BoardPtrTable[i] ); /* free io addresses and Tibet */ release_region( ip2config.addr[i], 8 ); } /* Disable and remove interrupt handler. */ if ( (ip2config.irq[i] > 0) && have_requested_irq(ip2config.irq[i]) ) { free_irq ( ip2config.irq[i], (void *)&pcName); clear_requested_irq( ip2config.irq[i]); } } if ( ( err = tty_unregister_driver ( &ip2_tty_driver ) ) ) { printk(KERN_ERR "IP2: failed to unregister tty driver (%d)\n", err); } if ( ( err = tty_unregister_driver ( &ip2_callout_driver ) ) ) { printk(KERN_ERR "IP2: failed to unregister callout driver (%d)\n", err); } if ( ( err = unregister_chrdev ( IP2_IPL_MAJOR, pcIpl ) ) ) { printk(KERN_ERR "IP2: failed to unregister IPL driver (%d)\n", err); } remove_proc_entry("ip2mem", &proc_root); // free memory for (i = 0; i < IP2_MAX_BOARDS; i++) { void *pB; if ((pB = i2BoardPtrTable[i]) != 0 ) { kfree ( pB ); i2BoardPtrTable[i] = NULL; } if ((DevTableMem[i]) != NULL ) { kfree ( DevTableMem[i] ); DevTableMem[i] = NULL; } } /* Cleanup the iiEllis subsystem. */ iiEllisCleanup(); #ifdef IP2DEBUG_INIT printk (KERN_DEBUG "IP2 Unloaded\n" ); #endif } #endif /* MODULE */ /******************************************************************************/ /* Function: old_ip2_init() */ /* Parameters: irq, io from command line of insmod et. al. */ /* Returns: Success (0) */ /* */ /* Description: */ /* This was the required entry point for all drivers (now in ip2.c) */ /* It performs all */ /* initialisation of the devices and driver structures, and registers itself */ /* with the relevant kernel modules. */ /******************************************************************************/ /* SA_INTERRUPT- if set blocks all interrupts else only this line */ /* SA_SHIRQ - for shared irq PCI or maybe EISA only */ /* SA_RANDOM - can be source for cert. random number generators */ #define IP2_SA_FLAGS 0 int __init old_ip2_init(void) { int i; int err; int status = 0; i2eBordStrPtr pB = NULL; int rc = -1; #ifdef IP2DEBUG_TRACE ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_ENTER, 0 ); #endif /* Announce our presence */ printk( KERN_INFO "%s version %s\n", pcName, pcVersion ); /* if all irq config is zero we shall poll_only */ for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { poll_only |= ip2config.irq[i]; } poll_only = !poll_only; /* Initialise the iiEllis subsystem. */ iiEllisInit(); /* Initialize arrays. */ memset( i2BoardPtrTable, 0, sizeof i2BoardPtrTable ); memset( DevTable, 0, sizeof DevTable ); memset( TtyTable, 0, sizeof TtyTable ); memset( Termios, 0, sizeof Termios ); memset( TermiosLocked, 0, sizeof TermiosLocked ); /* Initialise all the boards we can find (up to the maximum). */ for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { switch ( ip2config.addr[i] ) { case 0: /* skip this slot even if card is present */ break; default: /* ISA */ /* ISA address must be specified */ if ( (ip2config.addr[i] < 0x100) || (ip2config.addr[i] > 0x3f8) ) { printk ( KERN_ERR "IP2: Bad ISA board %d address %x\n", i, ip2config.addr[i] ); ip2config.addr[i] = 0; } else { ip2config.type[i] = ISA; /* Check for valid irq argument, set for polling if invalid */ if (ip2config.irq[i] && !is_valid_irq(ip2config.irq[i])) { printk(KERN_ERR "IP2: Bad IRQ(%d) specified\n",ip2config.irq[i]); ip2config.irq[i] = 0;// 0 is polling and is valid in that sense } } break; case PCI: #ifdef CONFIG_PCI if (pci_present()) { struct pci_dev *pci_dev_i = NULL; pci_dev_i = pci_find_device(PCI_VENDOR_ID_COMPUTONE, PCI_DEVICE_ID_COMPUTONE_IP2EX, pci_dev_i); if (pci_dev_i != NULL) { unsigned int addr; unsigned char pci_irq; ip2config.type[i] = PCI; /* * Update Pci_index, so that the next time we go * searching for a PCI board we find a different * one. */ ++Pci_index; status = pci_read_config_dword(pci_dev_i, PCI_BASE_ADDRESS_1, &addr); if ( addr & 1 ) { ip2config.addr[i]=(USHORT)(addr&0xfffe); } else { printk( KERN_ERR "IP2: PCI I/O address error\n"); } status = pci_read_config_byte(pci_dev_i, PCI_INTERRUPT_LINE, &pci_irq); if (!is_valid_irq(pci_irq)) { printk( KERN_ERR "IP2: Bad PCI BIOS IRQ(%d)\n",pci_irq); pci_irq = 0; } ip2config.irq[i] = pci_irq; } else { // ann error ip2config.addr[i] = 0; if (status == PCIBIOS_DEVICE_NOT_FOUND) { printk( KERN_ERR "IP2: PCI board %d not found\n", i ); } else { pcibios_strerror(status); } } } #else printk( KERN_ERR "IP2: PCI card specified but PCI support not\n"); printk( KERN_ERR "IP2: configured in this kernel.\n"); printk( KERN_ERR "IP2: Recompile kernel with CONFIG_PCI defined!\n"); #endif /* CONFIG_PCI */ break; case EISA: if ( (ip2config.addr[i] = find_eisa_board( Eisa_slot + 1 )) != 0) { /* Eisa_irq set as side effect, boo */ ip2config.type[i] = EISA; } ip2config.irq[i] = Eisa_irq; break; } /* switch */ } /* for */ for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { if ( ip2config.addr[i] ) { pB = kmalloc( sizeof(i2eBordStr), GFP_KERNEL); if ( pB != NULL ) { i2BoardPtrTable[i] = pB; memset( pB, 0, sizeof(i2eBordStr) ); iiSetAddress( pB, ip2config.addr[i], ii2DelayTimer ); iiReset( pB ); } else { printk(KERN_ERR "IP2: board memory allocation error\n"); } } } for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { if ( ( pB = i2BoardPtrTable[i] ) != NULL ) { iiResetDelay( pB ); break; } } for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { if ( i2BoardPtrTable[i] != NULL ) { ip2_init_board( i ); } } #ifdef IP2DEBUG_TRACE ip2trace (ITRC_NO_PORT, ITRC_INIT, 2, 0 ); #endif /* Zero out the normal tty device structure. */ memset ( &ip2_tty_driver, 0, sizeof ip2_tty_driver ); /* Initialise the relevant fields. */ ip2_tty_driver.magic = TTY_DRIVER_MAGIC; ip2_tty_driver.name = pcTty; ip2_tty_driver.driver_name = pcDriver_name; ip2_tty_driver.read_proc = ip2_read_proc; ip2_tty_driver.major = IP2_TTY_MAJOR; ip2_tty_driver.minor_start = 0; ip2_tty_driver.num = IP2_MAX_PORTS; ip2_tty_driver.type = TTY_DRIVER_TYPE_SERIAL; ip2_tty_driver.subtype = SERIAL_TYPE_NORMAL; ip2_tty_driver.init_termios = tty_std_termios; ip2_tty_driver.init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL; ip2_tty_driver.flags = TTY_DRIVER_REAL_RAW; ip2_tty_driver.refcount = &ref_count; ip2_tty_driver.table = TtyTable; ip2_tty_driver.termios = Termios; ip2_tty_driver.termios_locked = TermiosLocked; /* Setup the pointers to the implemented functions. */ ip2_tty_driver.open = ip2_open; ip2_tty_driver.close = ip2_close; ip2_tty_driver.write = ip2_write; ip2_tty_driver.put_char = ip2_putchar; ip2_tty_driver.flush_chars = ip2_flush_chars; ip2_tty_driver.write_room = ip2_write_room; ip2_tty_driver.chars_in_buffer = ip2_chars_in_buf; ip2_tty_driver.flush_buffer = ip2_flush_buffer; ip2_tty_driver.ioctl = ip2_ioctl; ip2_tty_driver.throttle = ip2_throttle; ip2_tty_driver.unthrottle = ip2_unthrottle; ip2_tty_driver.set_termios = ip2_set_termios; ip2_tty_driver.set_ldisc = ip2_set_line_discipline; ip2_tty_driver.stop = ip2_stop; ip2_tty_driver.start = ip2_start; ip2_tty_driver.hangup = ip2_hangup; /* Initialise the callout driver structure from the tty driver, and * make the needed adjustments. */ ip2_callout_driver = ip2_tty_driver; ip2_callout_driver.name = pcCallout; ip2_callout_driver.driver_name = pcDriver_name; ip2_callout_driver.read_proc = NULL; ip2_callout_driver.major = IP2_CALLOUT_MAJOR; ip2_callout_driver.subtype = SERIAL_TYPE_CALLOUT; #ifdef IP2DEBUG_TRACE ip2trace (ITRC_NO_PORT, ITRC_INIT, 3, 0 ); #endif /* Register the tty devices. */ if ( ( err = tty_register_driver ( &ip2_tty_driver ) ) ) { printk(KERN_ERR "IP2: failed to register tty driver (%d)\n", err); } else if ( ( err = tty_register_driver ( &ip2_callout_driver ) ) ) { printk(KERN_ERR "IP2: failed to register callout driver (%d)\n", err); } else /* Register the IPL driver. */ if ( ( err = register_chrdev ( IP2_IPL_MAJOR, pcIpl, &ip2_ipl ) ) ) { printk(KERN_ERR "IP2: failed to register IPL device (%d)\n", err ); } else /* Register the read_procmem thing */ if (!create_proc_info_entry("ip2mem",0,&proc_root,ip2_read_procmem)) { printk(KERN_ERR "IP2: failed to register read_procmem\n"); } else { #ifdef IP2DEBUG_TRACE ip2trace (ITRC_NO_PORT, ITRC_INIT, 4, 0 ); #endif /* Register the interrupt handler or poll handler, depending upon the * specified interrupt. */ for( i = 0; i < IP2_MAX_BOARDS; ++i ) { if ( 0 == ip2config.addr[i] ) { continue; } if (poll_only) { ip2config.irq[i] = CIR_POLL; } if ( ip2config.irq[i] == CIR_POLL ) { retry: if (!TimerOn) { PollTimer.expires = POLL_TIMEOUT; add_timer ( &PollTimer ); TimerOn = 1; printk( KERN_INFO "IP2: polling\n"); } } else { if (have_requested_irq(ip2config.irq[i])) continue; rc = request_irq( ip2config.irq[i], ip2_interrupt, IP2_SA_FLAGS | (ip2config.type[i] == PCI ? SA_SHIRQ : 0), pcName, (void *)&pcName); if (rc) { printk(KERN_ERR "IP2: an request_irq failed: error %d\n",rc); ip2config.irq[i] = CIR_POLL; printk( KERN_INFO "IP2: Polling %ld/sec.\n", (POLL_TIMEOUT - jiffies)); goto retry; } mark_requested_irq(ip2config.irq[i]); /* Initialise the interrupt handler bottom half (aka slih). */ } } for( i = 0; i < IP2_MAX_BOARDS; ++i ) { if ( i2BoardPtrTable[i] ) { set_irq( i, ip2config.irq[i] ); /* set and enable board interrupt */ } } } #ifdef IP2DEBUG_TRACE ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_RETURN, 0 ); #endif return 0; } /******************************************************************************/ /* Function: ip2_init_board() */ /* Parameters: Index of board in configuration structure */ /* Returns: Success (0) */ /* */ /* Description: */ /* This function initializes the specified board. The loadware is copied to */ /* the board, the channel structures are initialized, and the board details */ /* are reported on the console. */ /******************************************************************************/ static void __init ip2_init_board( int boardnum ) { int i,rc; int nports = 0, nboxes = 0; i2ChanStrPtr pCh; i2eBordStrPtr pB = i2BoardPtrTable[boardnum]; if ( !iiInitialize ( pB ) ) { printk ( KERN_ERR "IP2: Failed to initialize board at 0x%x, error %d\n", pB->i2eBase, pB->i2eError ); kfree ( pB ); i2BoardPtrTable[boardnum] = NULL; return; } printk(KERN_INFO "Board %d: addr=0x%x irq=%d ", boardnum + 1, ip2config.addr[boardnum], ip2config.irq[boardnum] ); if (0 != ( rc = check_region( ip2config.addr[boardnum], 8))) { i2BoardPtrTable[boardnum] = NULL; printk(KERN_ERR "bad addr=0x%x rc = %d\n", ip2config.addr[boardnum], rc ); return; } request_region( ip2config.addr[boardnum], 8, pcName ); if ( iiDownloadAll ( pB, (loadHdrStrPtr)Fip_firmware, 1, Fip_firmware_size ) != II_DOWN_GOOD ) { printk ( KERN_ERR "IP2:failed to download loadware " ); } else { printk ( KERN_INFO "fv=%d.%d.%d lv=%d.%d.%d\n", pB->i2ePom.e.porVersion, pB->i2ePom.e.porRevision, pB->i2ePom.e.porSubRev, pB->i2eLVersion, pB->i2eLRevision, pB->i2eLSub ); } switch ( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) { default: printk( KERN_ERR "IP2: Unknown board type, ID = %x", pB->i2ePom.e.porID ); nports = 0; goto ex_exit; break; case POR_ID_II_4: /* IntelliPort-II, ISA-4 (4xRJ45) */ printk ( KERN_INFO "ISA-4" ); nports = 4; break; case POR_ID_II_8: /* IntelliPort-II, 8-port using standard brick. */ printk ( KERN_INFO "ISA-8 std" ); nports = 8; break; case POR_ID_II_8R: /* IntelliPort-II, 8-port using RJ11's (no CTS) */ printk ( KERN_INFO "ISA-8 RJ11" ); nports = 8; break; case POR_ID_FIIEX: /* IntelliPort IIEX */ { int portnum = IP2_PORTS_PER_BOARD * boardnum; int box; for( box = 0; box < ABS_MAX_BOXES; ++box ) { if ( pB->i2eChannelMap[box] != 0 ) { ++nboxes; } for( i = 0; i < ABS_BIGGEST_BOX; ++i ) { if ( pB->i2eChannelMap[box] & 1<< i ) { ++nports; } } } DevTableMem[boardnum] = pCh = kmalloc( sizeof(i2ChanStr) * nports, GFP_KERNEL ); if ( !i2InitChannels( pB, nports, pCh ) ) { printk(KERN_ERR "i2InitChannels failed: %d\n",pB->i2eError); } pB->i2eChannelPtr = &DevTable[portnum]; pB->i2eChannelCnt = ABS_MOST_PORTS; for( box = 0; box < ABS_MAX_BOXES; ++box, portnum += ABS_BIGGEST_BOX ) { for( i = 0; i < ABS_BIGGEST_BOX; ++i ) { if ( pB->i2eChannelMap[box] & (1 << i) ) { DevTable[portnum + i] = pCh; pCh->port_index = portnum + i; pCh++; } } } printk(KERN_INFO "IP2: EX box=%d ports=%d %d bit", nboxes, nports, pB->i2eDataWidth16 ? 16 : 8 ); } goto ex_exit; break; } DevTableMem[boardnum] = pCh = kmalloc ( sizeof (i2ChanStr) * nports, GFP_KERNEL ); pB->i2eChannelPtr = pCh; pB->i2eChannelCnt = nports; i2InitChannels ( pB, pB->i2eChannelCnt, pCh ); pB->i2eChannelPtr = &DevTable[IP2_PORTS_PER_BOARD * boardnum]; for( i = 0; i < pB->i2eChannelCnt; ++i ) { DevTable[IP2_PORTS_PER_BOARD * boardnum + i] = pCh; pCh->port_index = (IP2_PORTS_PER_BOARD * boardnum) + i; pCh++; } ex_exit: printk ( KERN_INFO "\n" ); } /******************************************************************************/ /* Function: find_eisa_board ( int start_slot ) */ /* Parameters: First slot to check */ /* Returns: Address of EISA IntelliPort II controller */ /* */ /* Description: */ /* This function searches for an EISA IntelliPort controller, starting */ /* from the specified slot number. If the motherboard is not identified as an */ /* EISA motherboard, or no valid board ID is selected it returns 0. Otherwise */ /* it returns the base address of the controller. */ /******************************************************************************/ static unsigned short __init find_eisa_board( int start_slot ) { int i, j; unsigned int idm = 0; unsigned int idp = 0; unsigned int base = 0; unsigned int value; int setup_address; int setup_irq; int ismine = 0; /* * First a check for an EISA motherboard, which we do by comparing the * EISA ID registers for the system board and the first couple of slots. * No slot ID should match the system board ID, but on an ISA or PCI * machine the odds are that an empty bus will return similar values for * each slot. */ i = 0x0c80; value = (inb(i) << 24) + (inb(i+1) << 16) + (inb(i+2) << 8) + inb(i+3); for( i = 0x1c80; i <= 0x4c80; i += 0x1000 ) { j = (inb(i)<<24)+(inb(i+1)<<16)+(inb(i+2)<<8)+inb(i+3); if ( value == j ) return 0; } /* * OK, so we are inclined to believe that this is an EISA machine. Find * an IntelliPort controller. */ for( i = start_slot; i < 16; i++ ) { base = i << 12; idm = (inb(base + 0xc80) << 8) | (inb(base + 0xc81) & 0xff); idp = (inb(base + 0xc82) << 8) | (inb(base + 0xc83) & 0xff); ismine = 0; if ( idm == 0x0e8e ) { if ( idp == 0x0281 || idp == 0x0218 ) { ismine = 1; } else if ( idp == 0x0282 || idp == 0x0283 ) { ismine = 3; /* Can do edge-trigger */ } if ( ismine ) { Eisa_slot = i; break; } } } if ( !ismine ) return 0; /* It's some sort of EISA card, but at what address is it configured? */ setup_address = base + 0xc88; value = inb(base + 0xc86); setup_irq = (value & 8) ? Valid_Irqs[value & 7] : 0; if ( (ismine & 2) && !(value & 0x10) ) { ismine = 1; /* Could be edging, but not */ } if ( Eisa_irq == 0 ) { Eisa_irq = setup_irq; } else if ( Eisa_irq != setup_irq ) { printk ( KERN_ERR "IP2: EISA irq mismatch between EISA controllers\n" ); } #ifdef IP2DEBUG_INIT printk(KERN_DEBUG "Computone EISA board in slot %d, I.D. 0x%x%x, Address 0x%x", base >> 12, idm, idp, setup_address); if ( Eisa_irq ) { printk(KERN_DEBUG ", Interrupt %d %s\n", setup_irq, (ismine & 2) ? "(edge)" : "(level)"); } else { printk(KERN_DEBUG ", (polled)\n"); } #endif return setup_address; } /******************************************************************************/ /* Function: set_irq() */ /* Parameters: index to board in board table */ /* IRQ to use */ /* Returns: Success (0) */ /* */ /* Description: */ /******************************************************************************/ static void set_irq( int boardnum, int boardIrq ) { i2ChanStrPtr pCh; unsigned char tempCommand[16]; i2eBordStrPtr pB = i2BoardPtrTable[boardnum]; unsigned long flags; /* * Notify the boards they may generate interrupts. This is done by * sending an in-line command to channel 0 on each board. This is why * the channels have to be defined already. For each board, if the * interrupt has never been defined, we must do so NOW, directly, since * board will not send flow control or even give an interrupt until this * is done. If polling we must send 0 as the interrupt parameter. */ pCh = (i2ChanStrPtr) pB->i2eChannelPtr; // We will get an interrupt here at the end of this function iiDisableMailIrq(pB); /* We build up the entire packet header. */ CHANNEL_OF(tempCommand) = 0; PTYPE_OF(tempCommand) = PTYPE_INLINE; CMD_COUNT_OF(tempCommand) = 2; (CMD_OF(tempCommand))[0] = CMDVALUE_IRQ; (CMD_OF(tempCommand))[1] = boardIrq; /* * Write to FIFO; don't bother to adjust fifo capacity for this, since * board will respond almost immediately after SendMail hit. */ WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags); iiWriteBuf(pB, tempCommand, 4); WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags); pB->i2eUsingIrq = boardIrq; pB->i2eOutMailWaiting |= MB_OUT_STUFFED; /* Need to update number of boards before you enable mailbox int */ ++i2nBoards; CHANNEL_OF(tempCommand) = 0; PTYPE_OF(tempCommand) = PTYPE_BYPASS; CMD_COUNT_OF(tempCommand) = 6; (CMD_OF(tempCommand))[0] = 88; // SILO (CMD_OF(tempCommand))[1] = 64; // chars (CMD_OF(tempCommand))[2] = 32; // ms (CMD_OF(tempCommand))[3] = 28; // MAX_BLOCK (CMD_OF(tempCommand))[4] = 64; // chars (CMD_OF(tempCommand))[5] = 87; // HW_TEST WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags); iiWriteBuf(pB, tempCommand, 8); WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags); CHANNEL_OF(tempCommand) = 0; PTYPE_OF(tempCommand) = PTYPE_BYPASS; CMD_COUNT_OF(tempCommand) = 1; (CMD_OF(tempCommand))[0] = 84; /* get BOX_IDS */ iiWriteBuf(pB, tempCommand, 3); #ifdef XXX // enable heartbeat for test porpoises CHANNEL_OF(tempCommand) = 0; PTYPE_OF(tempCommand) = PTYPE_BYPASS; CMD_COUNT_OF(tempCommand) = 2; (CMD_OF(tempCommand))[0] = 44; /* get ping */ (CMD_OF(tempCommand))[1] = 200; /* 200 ms */ WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags); iiWriteBuf(pB, tempCommand, 4); WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags); #endif iiEnableMailIrq(pB); iiSendPendingMail(pB); } /******************************************************************************/ /* Interrupt Handler Section */ /******************************************************************************/ static inline void service_all_boards() { int i; i2eBordStrPtr pB; /* Service every board on the list */ for( i = 0; i < IP2_MAX_BOARDS; ++i ) { pB = i2BoardPtrTable[i]; if ( pB ) { i2ServiceBoard( pB ); } } } #ifdef USE_IQI static struct tq_struct senior_service = { // it's the death that worse than fate NULL, 0, (void(*)(void*)) service_all_boards, NULL, //later - board address XXX }; #endif /******************************************************************************/ /* Function: ip2_interrupt(int irq, void *dev_id, struct pt_regs * regs) */ /* Parameters: irq - interrupt number */ /* pointer to optional device ID structure */ /* pointer to register structure */ /* Returns: Nothing */ /* */ /* Description: */ /* */ /* */ /******************************************************************************/ static void ip2_interrupt(int irq, void *dev_id, struct pt_regs * regs) { int i; i2eBordStrPtr pB; #ifdef IP2DEBUG_TRACE ip2trace (ITRC_NO_PORT, ITRC_INTR, 99, 1, irq ); #endif #ifdef USE_IQI queue_task(&senior_service, &tq_immediate); mark_bh(IMMEDIATE_BH); #else /* Service just the boards on the list using this irq */ for( i = 0; i < i2nBoards; ++i ) { pB = i2BoardPtrTable[i]; if ( pB && (pB->i2eUsingIrq == irq) ) { i2ServiceBoard( pB ); } } #endif /* USE_IQI */ ++irq_counter; #ifdef IP2DEBUG_TRACE ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 ); #endif } /******************************************************************************/ /* Function: ip2_poll(unsigned long arg) */ /* Parameters: ? */ /* Returns: Nothing */ /* */ /* Description: */ /* This function calls the library routine i2ServiceBoard for each board in */ /* the board table. This is used instead of the interrupt routine when polled */ /* mode is specified. */ /******************************************************************************/ static void ip2_poll(unsigned long arg) { #ifdef IP2DEBUG_TRACE ip2trace (ITRC_NO_PORT, ITRC_INTR, 100, 0 ); #endif TimerOn = 0; // it's the truth but not checked in service bh_counter++; #ifdef USE_IQI queue_task(&senior_service, &tq_immediate); mark_bh(IMMEDIATE_BH); #else // Just polled boards, service_all might be better ip2_interrupt(0, NULL, NULL); #endif /* USE_IQI */ PollTimer.expires = POLL_TIMEOUT; add_timer( &PollTimer ); TimerOn = 1; #ifdef IP2DEBUG_TRACE ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 ); #endif } static inline void do_input( i2ChanStrPtr pCh ) { unsigned long flags; #ifdef IP2DEBUG_TRACE ip2trace(PORTN, ITRC_INPUT, 21, 0 ); #endif // Data input if ( pCh->pTTY != NULL ) { READ_LOCK_IRQSAVE(&pCh->Ibuf_spinlock,flags) if (!pCh->throttled && (pCh->Ibuf_stuff != pCh->Ibuf_strip)) { READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags) i2Input( pCh ); } else READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags) } else { #ifdef IP2DEBUG_TRACE ip2trace(PORTN, ITRC_INPUT, 22, 0 ); #endif i2InputFlush( pCh ); } } // code duplicated from n_tty (ldisc) static inline void isig(int sig, struct tty_struct *tty, int flush) { if (tty->pgrp > 0) kill_pg(tty->pgrp, sig, 1); if (flush || !L_NOFLSH(tty)) { if ( tty->ldisc.flush_buffer ) tty->ldisc.flush_buffer(tty); i2InputFlush( tty->driver_data ); } } static inline void do_status( i2ChanStrPtr pCh ) { int status; status = i2GetStatus( pCh, (I2_BRK|I2_PAR|I2_FRA|I2_OVR) ); #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_STATUS, 21, 1, status ); #endif if (pCh->pTTY && (status & (I2_BRK|I2_PAR|I2_FRA|I2_OVR)) ) { if ( (status & I2_BRK) ) { // code duplicated from n_tty (ldisc) if (I_IGNBRK(pCh->pTTY)) goto skip_this; if (I_BRKINT(pCh->pTTY)) { isig(SIGINT, pCh->pTTY, 1); goto skip_this; } wake_up_interruptible(&pCh->pTTY->read_wait); } #ifdef NEVER_HAPPENS_AS_SETUP_XXX // and can't work because we don't know the_char // as the_char is reported on a seperate path // The intelligent board does this stuff as setup { char brkf = TTY_NORMAL; unsigned char brkc = '\0'; unsigned char tmp; if ( (status & I2_BRK) ) { brkf = TTY_BREAK; brkc = '\0'; } else if (status & I2_PAR) { brkf = TTY_PARITY; brkc = the_char; } else if (status & I2_FRA) { brkf = TTY_FRAME; brkc = the_char; } else if (status & I2_OVR) { brkf = TTY_OVERRUN; brkc = the_char; } tmp = pCh->pTTY->real_raw; pCh->pTTY->real_raw = 0; pCh->pTTY->ldisc.receive_buf( pCh->pTTY, &brkc, &brkf, 1 ); pCh->pTTY->real_raw = tmp; } #endif /* NEVER_HAPPENS_AS_SETUP_XXX */ } skip_this: if ( status & (I2_DDCD | I2_DDSR | I2_DCTS | I2_DRI) ) { wake_up_interruptible(&pCh->delta_msr_wait); if ( (pCh->flags & ASYNC_CHECK_CD) && (status & I2_DDCD) ) { if ( status & I2_DCD ) { if ( pCh->wopen ) { wake_up_interruptible ( &pCh->open_wait ); } } else if ( !(pCh->flags & ASYNC_CALLOUT_ACTIVE) ) { if (pCh->pTTY && (!(pCh->pTTY->termios->c_cflag & CLOCAL)) ) { tty_hangup( pCh->pTTY ); } } } } #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_STATUS, 26, 0 ); #endif } /******************************************************************************/ /* Device Open/Close/Ioctl Entry Point Section */ /******************************************************************************/ /******************************************************************************/ /* Function: open_sanity_check() */ /* Parameters: Pointer to tty structure */ /* Pointer to file structure */ /* Returns: Success or failure */ /* */ /* Description: */ /* Verifies the structure magic numbers and cross links. */ /******************************************************************************/ #ifdef IP2DEBUG_OPEN static void open_sanity_check( i2ChanStrPtr pCh, i2eBordStrPtr pBrd ) { if ( pBrd->i2eValid != I2E_MAGIC ) { printk(KERN_ERR "IP2: invalid board structure\n" ); } else if ( pBrd != pCh->pMyBord ) { printk(KERN_ERR "IP2: board structure pointer mismatch (%p)\n", pCh->pMyBord ); } else if ( pBrd->i2eChannelCnt < pCh->port_index ) { printk(KERN_ERR "IP2: bad device index (%d)\n", pCh->port_index ); } else if (&((i2ChanStrPtr)pBrd->i2eChannelPtr)[pCh->port_index] != pCh) { } else { printk(KERN_INFO "IP2: all pointers check out!\n" ); } } #endif /******************************************************************************/ /* Function: ip2_open() */ /* Parameters: Pointer to tty structure */ /* Pointer to file structure */ /* Returns: Success or failure */ /* */ /* Description: (MANDATORY) */ /* A successful device open has to run a gauntlet of checks before it */ /* completes. After some sanity checking and pointer setup, the function */ /* blocks until all conditions are satisfied. It then initialises the port to */ /* the default characteristics and returns. */ /******************************************************************************/ static int ip2_open( PTTY tty, struct file *pFile ) { int rc = 0; int do_clocal = 0; i2ChanStrPtr pCh = DevTable[MINOR(tty->device)]; #ifdef IP2DEBUG_TRACE ip2trace (MINOR(tty->device), ITRC_OPEN, ITRC_ENTER, 0 ); #endif if ( pCh == NULL ) { return -ENODEV; } /* Setup pointer links in device and tty structures */ pCh->pTTY = tty; tty->driver_data = pCh; MOD_INC_USE_COUNT; #ifdef IP2DEBUG_OPEN printk(KERN_DEBUG \ "IP2:open(tty=%p,pFile=%p):dev=%x,maj=%d,min=%d,ch=%d,idx=%d\n", tty, pFile, tty->device, MAJOR(tty->device), MINOR(tty->device), pCh->infl.hd.i2sChannel, pCh->port_index); open_sanity_check ( pCh, pCh->pMyBord ); #endif i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP); pCh->dataSetOut |= (I2_DTR | I2_RTS); i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_REP); i2QueueCommands(PTYPE_INLINE, pCh, 100, 3, CMD_CTS_REP, CMD_DSR_REP, CMD_RI_REP); serviceOutgoingFifo( pCh->pMyBord ); /* Block here until the port is ready (per serial and istallion) */ /* * 1. If the port is in the middle of closing wait for the completion * and then return the appropriate error. */ if ( tty_hung_up_p(pFile) || ( pCh->flags & ASYNC_CLOSING )) { if ( pCh->flags & ASYNC_CLOSING ) { interruptible_sleep_on( &pCh->close_wait); } if ( tty_hung_up_p(pFile) ) { return( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS; } } /* * 2. If this is a callout device, make sure the normal port is not in * use, and that someone else doesn't have the callout device locked. * (These are the only tests the standard serial driver makes for * callout devices.) */ if ( tty->driver.subtype == SERIAL_TYPE_CALLOUT ) { if ( pCh->flags & ASYNC_NORMAL_ACTIVE ) { return -EBUSY; } if ( ( pCh->flags & ASYNC_CALLOUT_ACTIVE ) && ( pCh->flags & ASYNC_SESSION_LOCKOUT ) && ( pCh->session != current->session ) ) { return -EBUSY; } if ( ( pCh->flags & ASYNC_CALLOUT_ACTIVE ) && ( pCh->flags & ASYNC_PGRP_LOCKOUT ) && ( pCh->pgrp != current->pgrp ) ) { return -EBUSY; } pCh->flags |= ASYNC_CALLOUT_ACTIVE; goto noblock; } /* * 3. Handle a non-blocking open of a normal port. */ if ( (pFile->f_flags & O_NONBLOCK) || (tty->flags & (1<<TTY_IO_ERROR) )) { if ( pCh->flags & ASYNC_CALLOUT_ACTIVE ) { return -EBUSY; } pCh->flags |= ASYNC_NORMAL_ACTIVE; goto noblock; } /* * 4. Now loop waiting for the port to be free and carrier present * (if required). */ if ( pCh->flags & ASYNC_CALLOUT_ACTIVE ) { if ( pCh->NormalTermios.c_cflag & CLOCAL ) { do_clocal = 1; } } else { if ( tty->termios->c_cflag & CLOCAL ) { do_clocal = 1; } } #ifdef IP2DEBUG_OPEN printk(KERN_DEBUG "OpenBlock: do_clocal = %d\n", do_clocal); #endif ++pCh->wopen; for(;;) { if ( !(pCh->flags & ASYNC_CALLOUT_ACTIVE)) { i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP); pCh->dataSetOut |= (I2_DTR | I2_RTS); serviceOutgoingFifo( pCh->pMyBord ); } if ( tty_hung_up_p(pFile) ) { return ( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EBUSY : -ERESTARTSYS; } if ( !(pCh->flags & ASYNC_CALLOUT_ACTIVE) && !(pCh->flags & ASYNC_CLOSING) && (do_clocal || (pCh->dataSetIn & I2_DCD) )) { rc = 0; break; } #ifdef IP2DEBUG_OPEN printk(KERN_DEBUG "ASYNC_CALLOUT_ACTIVE = %s\n", (pCh->flags & ASYNC_CALLOUT_ACTIVE)?"True":"False"); printk(KERN_DEBUG "ASYNC_CLOSING = %s\n", (pCh->flags & ASYNC_CLOSING)?"True":"False"); printk(KERN_DEBUG "OpenBlock: waiting for CD or signal\n"); #endif #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_OPEN, 3, 2, (pCh->flags & ASYNC_CALLOUT_ACTIVE), (pCh->flags & ASYNC_CLOSING) ); #endif /* check for signal */ if (signal_pending(current)) { rc = (( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS); break; } interruptible_sleep_on(&pCh->open_wait); } --pCh->wopen; //why count? #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_OPEN, 4, 0 ); #endif if (rc != 0 ) { return rc; } pCh->flags |= ASYNC_NORMAL_ACTIVE; noblock: /* first open - Assign termios structure to port */ if ( tty->count == 1 ) { i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB); if ( pCh->flags & ASYNC_SPLIT_TERMIOS ) { if ( tty->driver.subtype == SERIAL_TYPE_NORMAL ) { *tty->termios = pCh->NormalTermios; } else { *tty->termios = pCh->CalloutTermios; } } /* Now we must send the termios settings to the loadware */ set_params( pCh, NULL ); } /* override previous and never reset ??? */ pCh->session = current->session; pCh->pgrp = current->pgrp; /* * Now set any i2lib options. These may go away if the i2lib code ends * up rolled into the mainline. */ pCh->channelOptions |= CO_NBLOCK_WRITE; #ifdef IP2DEBUG_OPEN printk (KERN_DEBUG "IP2: open completed\n" ); #endif serviceOutgoingFifo( pCh->pMyBord ); #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_OPEN, ITRC_RETURN, 0 ); #endif return 0; } /******************************************************************************/ /* Function: ip2_close() */ /* Parameters: Pointer to tty structure */ /* Pointer to file structure */ /* Returns: Nothing */ /* */ /* Description: */ /* */ /* */ /******************************************************************************/ static void ip2_close( PTTY tty, struct file *pFile ) { i2ChanStrPtr pCh = tty->driver_data; if ( !pCh ) { return; } #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_CLOSE, ITRC_ENTER, 0 ); #endif #ifdef IP2DEBUG_OPEN printk(KERN_DEBUG "IP2:close ttyF%02X:\n",MINOR(tty->device)); #endif if ( tty_hung_up_p ( pFile ) ) { MOD_DEC_USE_COUNT; #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_CLOSE, 2, 1, 2 ); #endif return; } if ( tty->count > 1 ) { /* not the last close */ MOD_DEC_USE_COUNT; #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_CLOSE, 2, 1, 3 ); #endif return; } pCh->flags |= ASYNC_CLOSING; // last close actually /* * Save the termios structure, since this port may have separate termios * for callout and dialin. */ if (pCh->flags & ASYNC_NORMAL_ACTIVE) pCh->NormalTermios = *tty->termios; if (pCh->flags & ASYNC_CALLOUT_ACTIVE) pCh->CalloutTermios = *tty->termios; tty->closing = 1; if (pCh->ClosingWaitTime != ASYNC_CLOSING_WAIT_NONE) { /* * Before we drop DTR, make sure the transmitter has completely drained. * This uses an timeout, after which the close * completes. */ ip2_wait_until_sent(tty, pCh->ClosingWaitTime ); } /* * At this point we stop accepting input. Here we flush the channel * input buffer which will allow the board to send up more data. Any * additional input is tossed at interrupt/poll time. */ i2InputFlush( pCh ); /* disable DSS reporting */ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_NREP); if ( !tty || (tty->termios->c_cflag & HUPCL) ) { i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN); pCh->dataSetOut &= ~(I2_DTR | I2_RTS); i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25)); } i2QueueCommands(PTYPE_INLINE, pCh, 100, 3, CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP); serviceOutgoingFifo ( pCh->pMyBord ); if ( tty->driver.flush_buffer ) tty->driver.flush_buffer(tty); if ( tty->ldisc.flush_buffer ) tty->ldisc.flush_buffer(tty); tty->closing = 0; pCh->pTTY = NULL; if (pCh->wopen) { if (pCh->ClosingDelay) { current->state = TASK_INTERRUPTIBLE; schedule_timeout(pCh->ClosingDelay); } wake_up_interruptible(&pCh->open_wait); } pCh->flags &=~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE|ASYNC_CLOSING); wake_up_interruptible(&pCh->close_wait); #ifdef IP2DEBUG_OPEN DBG_CNT("ip2_close: after wakeups--"); #endif MOD_DEC_USE_COUNT; #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_CLOSE, ITRC_RETURN, 1, 1 ); #endif return; } /******************************************************************************/ /* Function: ip2_hangup() */ /* Parameters: Pointer to tty structure */ /* Returns: Nothing */ /* */ /* Description: */ /* */ /* */ /******************************************************************************/ static void ip2_hangup ( PTTY tty ) { i2ChanStrPtr pCh = tty->driver_data; #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_HANGUP, ITRC_ENTER, 0 ); #endif ip2_flush_buffer(tty); /* disable DSS reporting */ i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_DCD_NREP); i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB); if ( !tty || (tty->termios->c_cflag & HUPCL) ) { i2QueueCommands(PTYPE_BYPASS, pCh, 0, 2, CMD_RTSDN, CMD_DTRDN); pCh->dataSetOut &= ~(I2_DTR | I2_RTS); i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25)); } i2QueueCommands(PTYPE_INLINE, pCh, 1, 3, CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP); serviceOutgoingFifo ( pCh->pMyBord ); wake_up_interruptible ( &pCh->delta_msr_wait ); pCh->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE); pCh->pTTY = NULL; wake_up_interruptible ( &pCh->open_wait ); #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_HANGUP, ITRC_RETURN, 0 ); #endif } /******************************************************************************/ /******************************************************************************/ /* Device Output Section */ /******************************************************************************/ /******************************************************************************/ /******************************************************************************/ /* Function: ip2_write() */ /* Parameters: Pointer to tty structure */ /* Flag denoting data is in user (1) or kernel (0) space */ /* Pointer to data */ /* Number of bytes to write */ /* Returns: Number of bytes actually written */ /* */ /* Description: (MANDATORY) */ /* */ /* */ /******************************************************************************/ static int ip2_write( PTTY tty, int user, const unsigned char *pData, int count) { i2ChanStrPtr pCh = tty->driver_data; int bytesSent = 0; unsigned long flags; #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_WRITE, ITRC_ENTER, 2, count, -1 ); #endif /* Flush out any buffered data left over from ip2_putchar() calls. */ ip2_flush_chars( tty ); /* This is the actual move bit. Make sure it does what we need!!!!! */ WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); bytesSent = i2Output( pCh, pData, count, user ); WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_WRITE, ITRC_RETURN, 1, bytesSent ); #endif return bytesSent > 0 ? bytesSent : 0; } /******************************************************************************/ /* Function: ip2_putchar() */ /* Parameters: Pointer to tty structure */ /* Character to write */ /* Returns: Nothing */ /* */ /* Description: */ /* */ /* */ /******************************************************************************/ static void ip2_putchar( PTTY tty, unsigned char ch ) { i2ChanStrPtr pCh = tty->driver_data; unsigned long flags; #ifdef IP2DEBUG_TRACE // ip2trace (PORTN, ITRC_PUTC, ITRC_ENTER, 1, ch ); #endif WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); pCh->Pbuf[pCh->Pbuf_stuff++] = ch; if ( pCh->Pbuf_stuff == sizeof pCh->Pbuf ) { WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); ip2_flush_chars( tty ); } else WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); #ifdef IP2DEBUG_TRACE // ip2trace (PORTN, ITRC_PUTC, ITRC_RETURN, 1, ch ); #endif } /******************************************************************************/ /* Function: ip2_flush_chars() */ /* Parameters: Pointer to tty structure */ /* Returns: Nothing */ /* */ /* Description: */ /* */ /******************************************************************************/ static void ip2_flush_chars( PTTY tty ) { int strip; i2ChanStrPtr pCh = tty->driver_data; unsigned long flags; WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); if ( pCh->Pbuf_stuff ) { #ifdef IP2DEBUG_TRACE // ip2trace (PORTN, ITRC_PUTC, 10, 1, strip ); #endif // // We may need to restart i2Output if it does not fullfill this request // strip = i2Output( pCh, pCh->Pbuf, pCh->Pbuf_stuff, 0 ); if ( strip != pCh->Pbuf_stuff ) { memmove( pCh->Pbuf, &pCh->Pbuf[strip], pCh->Pbuf_stuff - strip ); } pCh->Pbuf_stuff -= strip; } WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); } /******************************************************************************/ /* Function: ip2_write_room() */ /* Parameters: Pointer to tty structure */ /* Returns: Number of bytes that the driver can accept */ /* */ /* Description: */ /* */ /******************************************************************************/ static int ip2_write_room ( PTTY tty ) { int bytesFree; i2ChanStrPtr pCh = tty->driver_data; unsigned long flags; READ_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); bytesFree = i2OutputFree( pCh ) - pCh->Pbuf_stuff; READ_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_WRITE, 11, 1, bytesFree ); #endif return ((bytesFree > 0) ? bytesFree : 0); } /******************************************************************************/ /* Function: ip2_chars_in_buf() */ /* Parameters: Pointer to tty structure */ /* Returns: Number of bytes queued for transmission */ /* */ /* Description: */ /* */ /* */ /******************************************************************************/ static int ip2_chars_in_buf ( PTTY tty ) { i2ChanStrPtr pCh = tty->driver_data; int rc; unsigned long flags; #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_WRITE, 12, 1, pCh->Obuf_char_count + pCh->Pbuf_stuff ); #endif #ifdef IP2DEBUG_WRITE printk (KERN_DEBUG "IP2: chars in buffer = %d (%d,%d)\n", pCh->Obuf_char_count + pCh->Pbuf_stuff, pCh->Obuf_char_count, pCh->Pbuf_stuff ); #endif READ_LOCK_IRQSAVE(&pCh->Obuf_spinlock,flags); rc = pCh->Obuf_char_count; READ_UNLOCK_IRQRESTORE(&pCh->Obuf_spinlock,flags); READ_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); rc += pCh->Pbuf_stuff; READ_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); return rc; } /******************************************************************************/ /* Function: ip2_flush_buffer() */ /* Parameters: Pointer to tty structure */ /* Returns: Nothing */ /* */ /* Description: */ /* */ /* */ /******************************************************************************/ static void ip2_flush_buffer( PTTY tty ) { i2ChanStrPtr pCh = tty->driver_data; unsigned long flags; #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_FLUSH, ITRC_ENTER, 0 ); #endif #ifdef IP2DEBUG_WRITE printk (KERN_DEBUG "IP2: flush buffer\n" ); #endif WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags); pCh->Pbuf_stuff = 0; WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags); i2FlushOutput( pCh ); ip2_owake(tty); #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_FLUSH, ITRC_RETURN, 0 ); #endif } /******************************************************************************/ /* Function: ip2_wait_until_sent() */ /* Parameters: Pointer to tty structure */ /* Timeout for wait. */ /* Returns: Nothing */ /* */ /* Description: */ /* This function is used in place of the normal tty_wait_until_sent, which */ /* only waits for the driver buffers to be empty (or rather, those buffers */ /* reported by chars_in_buffer) which doesn't work for IP2 due to the */ /* indeterminate number of bytes buffered on the board. */ /******************************************************************************/ static void ip2_wait_until_sent ( PTTY tty, int timeout ) { int i = jiffies; i2ChanStrPtr pCh = tty->driver_data; tty_wait_until_sent(tty, timeout ); if ( (i = timeout - (jiffies -i)) > 0) i2DrainOutput( pCh, i ); } /******************************************************************************/ /******************************************************************************/ /* Device Input Section */ /******************************************************************************/ /******************************************************************************/ /******************************************************************************/ /* Function: ip2_throttle() */ /* Parameters: Pointer to tty structure */ /* Returns: Nothing */ /* */ /* Description: */ /* */ /* */ /******************************************************************************/ static void ip2_throttle ( PTTY tty ) { i2ChanStrPtr pCh = tty->driver_data; #ifdef IP2DEBUG_READ printk (KERN_DEBUG "IP2: throttle\n" ); #endif /* * Signal the poll/interrupt handlers not to forward incoming data to * the line discipline. This will cause the buffers to fill up in the * library and thus cause the library routines to send the flow control * stuff. */ pCh->throttled = 1; } /******************************************************************************/ /* Function: ip2_unthrottle() */ /* Parameters: Pointer to tty structure */ /* Returns: Nothing */ /* */ /* Description: */ /* */ /* */ /******************************************************************************/ static void ip2_unthrottle ( PTTY tty ) { i2ChanStrPtr pCh = tty->driver_data; unsigned long flags; #ifdef IP2DEBUG_READ printk (KERN_DEBUG "IP2: unthrottle\n" ); #endif /* Pass incoming data up to the line discipline again. */ pCh->throttled = 0; i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME); serviceOutgoingFifo( pCh->pMyBord ); READ_LOCK_IRQSAVE(&pCh->Ibuf_spinlock,flags) if ( pCh->Ibuf_stuff != pCh->Ibuf_strip ) { READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags) #ifdef IP2DEBUG_READ printk (KERN_DEBUG "i2Input called from unthrottle\n" ); #endif i2Input( pCh ); } else READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags) } static void ip2_start ( PTTY tty ) { i2ChanStrPtr pCh = DevTable[MINOR(tty->device)]; i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME); i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_UNSUSPEND); i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_RESUME); #ifdef IP2DEBUG_WRITE printk (KERN_DEBUG "IP2: start tx\n" ); #endif } static void ip2_stop ( PTTY tty ) { i2ChanStrPtr pCh = DevTable[MINOR(tty->device)]; i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_SUSPEND); #ifdef IP2DEBUG_WRITE printk (KERN_DEBUG "IP2: stop tx\n" ); #endif } /******************************************************************************/ /* Device Ioctl Section */ /******************************************************************************/ /******************************************************************************/ /* Function: ip2_ioctl() */ /* Parameters: Pointer to tty structure */ /* Pointer to file structure */ /* Command */ /* Argument */ /* Returns: Success or failure */ /* */ /* Description: */ /* */ /* */ /******************************************************************************/ static int ip2_ioctl ( PTTY tty, struct file *pFile, UINT cmd, ULONG arg ) { i2ChanStrPtr pCh = DevTable[MINOR(tty->device)]; struct async_icount cprev, cnow; /* kernel counter temps */ struct serial_icounter_struct *p_cuser; /* user space */ int rc = 0; if ( pCh == NULL ) { return -ENODEV; } #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_IOCTL, ITRC_ENTER, 2, cmd, arg ); #endif #ifdef IP2DEBUG_IOCTL printk(KERN_DEBUG "IP2: ioctl cmd (%x), arg (%lx)\n", cmd, arg ); #endif switch(cmd) { case TIOCGSERIAL: #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_IOCTL, 2, 1, rc ); #endif rc = get_serial_info(pCh, (struct serial_struct *) arg); if (rc) return rc; break; case TIOCSSERIAL: #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_IOCTL, 3, 1, rc ); #endif rc = set_serial_info(pCh, (struct serial_struct *) arg); if (rc) return rc; break; case TCXONC: rc = tty_check_change(tty); if (rc) return rc; switch (arg) { case TCOOFF: //return -ENOIOCTLCMD; break; case TCOON: //return -ENOIOCTLCMD; break; case TCIOFF: if (STOP_CHAR(tty) != __DISABLED_CHAR) { i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1, CMD_XMIT_NOW(STOP_CHAR(tty))); } break; case TCION: if (START_CHAR(tty) != __DISABLED_CHAR) { i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1, CMD_XMIT_NOW(START_CHAR(tty))); } break; default: return -EINVAL; } return 0; case TCSBRK: /* SVID version: non-zero arg --> no break */ rc = tty_check_change(tty); #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_IOCTL, 4, 1, rc ); #endif if (!rc) { ip2_wait_until_sent(tty,0); if (!arg) { i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SEND_BRK(250)); serviceOutgoingFifo( pCh->pMyBord ); } } break; case TCSBRKP: /* support for POSIX tcsendbreak() */ rc = tty_check_change(tty); #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_IOCTL, 5, 1, rc ); #endif if (!rc) { ip2_wait_until_sent(tty,0); i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SEND_BRK(arg ? arg*100 : 250)); serviceOutgoingFifo ( pCh->pMyBord ); } break; case TIOCGSOFTCAR: #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_IOCTL, 6, 1, rc ); #endif rc=put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long *) arg); if (rc) return rc; break; case TIOCSSOFTCAR: #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_IOCTL, 7, 1, rc ); #endif rc=get_user(arg,(unsigned long *) arg); if (rc) return rc; tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0)); break; case TIOCMGET: #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_IOCTL, 8, 1, rc ); #endif rc = get_modem_info(pCh, (unsigned int *) arg); if (rc) return rc; break; case TIOCMBIS: case TIOCMBIC: case TIOCMSET: #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_IOCTL, 9, 0 ); #endif rc = set_modem_info(pCh, cmd, (unsigned int *) arg); break; /* * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change - mask * passed in arg for lines of interest (use |'ed TIOCM_RNG/DSR/CD/CTS * for masking). Caller should use TIOCGICOUNT to see which one it was */ case TIOCMIWAIT: cprev = pCh->icount; /* note the counters on entry */ for(;;) { #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_IOCTL, 10, 0 ); #endif interruptible_sleep_on(&pCh->delta_msr_wait); /* see if a signal did it */ if (signal_pending(current)) { rc = -ERESTARTSYS; break; } cnow = pCh->icount; /* atomic copy */ if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) { rc = -EIO; /* no change => rc */ break; } if ( ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) { rc = 0; break; } cprev = cnow; } /* NOTREACHED */ break; /* * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) * Return: write counters to the user passed counter struct * NB: both 1->0 and 0->1 transitions are counted except for RI where * only 0->1 is counted. The controller is quite capable of counting * both, but this done to preserve compatibility with the standard * serial driver. */ case TIOCGICOUNT: #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_IOCTL, 11, 1, rc ); #endif cnow = pCh->icount; p_cuser = (struct serial_icounter_struct *) arg; put_user(cnow.cts, &p_cuser->cts); put_user(cnow.dsr, &p_cuser->dsr); put_user(cnow.rng, &p_cuser->rng); put_user(cnow.dcd, &p_cuser->dcd); break; /* * The rest are not supported by this driver. By returning -ENOIOCTLCMD they * will be passed to the line discipline for it to handle. */ case TIOCSERCONFIG: case TIOCSERGWILD: case TIOCSERGETLSR: case TIOCSERSWILD: case TIOCSERGSTRUCT: case TIOCSERGETMULTI: case TIOCSERSETMULTI: default: #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_IOCTL, 12, 0 ); #endif rc = -ENOIOCTLCMD; break; } #ifdef IP2DEBUG_TRACE ip2trace (PORTN, ITRC_IOCTL, ITRC_RETURN, 0 ); #endif return rc; } /******************************************************************************/ /* Function: get_modem_info() */ /* Parameters: Pointer to channel structure */ /* Pointer to destination for data */ /* Returns: Nothing */ /* */ /* Description: */ /* This returns the current settings of the dataset signal inputs to the user */ /* program. */ /******************************************************************************/ static int get_modem_info(i2ChanStrPtr pCh, unsigned int *value) { unsigned short status; unsigned int result; int rc; status = pCh->dataSetIn; // snapshot settings result = ((pCh->dataSetOut & I2_RTS) ? TIOCM_RTS : 0) | ((pCh->dataSetOut & I2_DTR) ? TIOCM_DTR : 0) | ((status & I2_DCD) ? TIOCM_CAR : 0) | ((status & I2_RI) ? TIOCM_RNG : 0) | ((status & I2_DSR) ? TIOCM_DSR : 0) | ((status & I2_CTS) ? TIOCM_CTS : 0); rc=put_user(result,value); return rc; } /******************************************************************************/ /* Function: set_modem_info() */ /* Parameters: Pointer to channel structure */ /* Specific ioctl command */ /* Pointer to source for new settings */ /* Returns: Nothing */ /* */ /* Description: */ /* This returns the current settings of the dataset signal inputs to the user */ /* program. */ /******************************************************************************/ static int set_modem_info(i2ChanStrPtr pCh, unsigned cmd, unsigned int *value) { int rc; unsigned int arg; rc=get_user(arg,value); if (rc) return rc; switch(cmd) { case TIOCMBIS: if (arg & TIOCM_RTS) { i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSUP); pCh->dataSetOut |= I2_RTS; } if (arg & TIOCM_DTR) { i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRUP); pCh->dataSetOut |= I2_DTR; } break; case TIOCMBIC: if (arg & TIOCM_RTS) { i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSDN); pCh->dataSetOut &= ~I2_RTS; } if (arg & TIOCM_DTR) { i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRDN); pCh->dataSetOut &= ~I2_DTR; } break; case TIOCMSET: if ( (arg & TIOCM_RTS) && !(pCh->dataSetOut & I2_RTS) ) { i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSUP); pCh->dataSetOut |= I2_RTS; } else if ( !(arg & TIOCM_RTS) && (pCh->dataSetOut & I2_RTS) ) { i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSDN); pCh->dataSetOut &= ~I2_RTS; } if ( (arg & TIOCM_DTR) && !(pCh->dataSetOut & I2_DTR) ) { i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRUP); pCh->dataSetOut |= I2_DTR; } else if ( !(arg & TIOCM_DTR) && (pCh->dataSetOut & I2_DTR) ) { i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRDN); pCh->dataSetOut &= ~I2_DTR; } break; default: return -EINVAL; } serviceOutgoingFifo( pCh->pMyBord ); return 0; } /******************************************************************************/ /* Function: GetSerialInfo() */ /* Parameters: Pointer to channel structure */ /* Pointer to old termios structure */ /* Returns: Nothing */ /* */ /* Description: */ /* This is to support the setserial command, and requires processing of the */ /* standard Linux serial structure. */ /******************************************************************************/ static int get_serial_info ( i2ChanStrPtr pCh, struct serial_struct *retinfo ) { struct serial_struct tmp; int rc=0; if ( !retinfo ) { return -EFAULT; } memset ( &tmp, 0, sizeof(tmp) ); tmp.type = pCh->pMyBord->channelBtypes.bid_value[(pCh->port_index & (IP2_PORTS_PER_BOARD-1))/16]; if (BID_HAS_654(tmp.type)) { tmp.type = PORT_16650; } else { tmp.type = PORT_CIRRUS; } tmp.line = pCh->port_index; tmp.port = pCh->pMyBord->i2eBase; tmp.irq = ip2config.irq[pCh->port_index/64]; tmp.flags = pCh->flags; tmp.baud_base = pCh->BaudBase; tmp.close_delay = pCh->ClosingDelay; tmp.closing_wait = pCh->ClosingWaitTime; tmp.custom_divisor = pCh->BaudDivisor; if(copy_to_user(retinfo,&tmp,sizeof(*retinfo))) rc= -EFAULT; return rc; } /******************************************************************************/ /* Function: SetSerialInfo() */ /* Parameters: Pointer to channel structure */ /* Pointer to old termios structure */ /* Returns: Nothing */ /* */ /* Description: */ /* This function provides support for setserial, which uses the TIOCSSERIAL */ /* ioctl. Not all setserial parameters are relevant. If the user attempts to */ /* change the IRQ, address or type of the port the ioctl fails. */ /******************************************************************************/ static int set_serial_info( i2ChanStrPtr pCh, struct serial_struct *new_info ) { struct serial_struct ns; int old_flags, old_baud_divisor; int rc = 0; if ( !new_info ) { return -EFAULT; } rc=copy_from_user(&ns, new_info, sizeof (ns) ); if (rc) { return rc; } /* * We don't allow setserial to change IRQ, board address, type or baud * base. Also line nunber as such is meaningless but we use it for our * array index so it is fixed also. */ if ( ns.irq != ip2config.irq || (int) ns.port != ((int) pCh->pMyBord->i2eBase) || ns.baud_base != pCh->BaudBase || ns.line != pCh->port_index ) { return -EINVAL; } old_flags = pCh->flags; old_baud_divisor = pCh->BaudDivisor; if ( !suser() ) { if ( ( ns.close_delay != pCh->ClosingDelay ) || ( (ns.flags & ~ASYNC_USR_MASK) != (pCh->flags & ~ASYNC_USR_MASK) ) ) { return -EPERM; } pCh->flags = (pCh->flags & ~ASYNC_USR_MASK) | (ns.flags & ASYNC_USR_MASK); pCh->BaudDivisor = ns.custom_divisor; } else { pCh->flags = (pCh->flags & ~ASYNC_FLAGS) | (ns.flags & ASYNC_FLAGS); pCh->BaudDivisor = ns.custom_divisor; pCh->ClosingDelay = ns.close_delay * HZ/100; pCh->ClosingWaitTime = ns.closing_wait * HZ/100; } if ( ( (old_flags & ASYNC_SPD_MASK) != (pCh->flags & ASYNC_SPD_MASK) ) || (old_baud_divisor != pCh->BaudDivisor) ) { // Invalidate speed and reset parameters set_params( pCh, NULL ); } return rc; } /******************************************************************************/ /* Function: ip2_set_termios() */ /* Parameters: Pointer to tty structure */ /* Pointer to old termios structure */ /* Returns: Nothing */ /* */ /* Description: */ /* */ /* */ /******************************************************************************/ static void ip2_set_termios( PTTY tty, struct termios *old_termios ) { i2ChanStrPtr pCh = (i2ChanStrPtr)tty->driver_data; #ifdef IP2DEBUG_IOCTL printk (KERN_DEBUG "IP2: set termios %p\n", old_termios ); #endif set_params( pCh, old_termios ); } /******************************************************************************/ /* Function: ip2_set_line_discipline() */ /* Parameters: Pointer to tty structure */ /* Returns: Nothing */ /* */ /* Description: Does nothing */ /* */ /* */ /******************************************************************************/ static void ip2_set_line_discipline ( PTTY tty ) { #ifdef IP2DEBUG_IOCTL printk (KERN_DEBUG "IP2: set line discipline\n" ); #endif #ifdef IP2DEBUG_TRACE ip2trace (((i2ChanStrPtr)tty->driver_data)->port_index, ITRC_IOCTL, 16, 0 ); #endif } /******************************************************************************/ /* Function: SetLine Characteristics() */ /* Parameters: Pointer to channel structure */ /* Returns: Nothing */ /* */ /* Description: */ /* This routine is called to update the channel structure with the new line */ /* characteristics, and send the appropriate commands to the board when they */ /* change. */ /******************************************************************************/ static void set_params( i2ChanStrPtr pCh, struct termios *o_tios ) { tcflag_t cflag, iflag, lflag; char stop_char, start_char; struct termios dummy; lflag = pCh->pTTY->termios->c_lflag; cflag = pCh->pTTY->termios->c_cflag; iflag = pCh->pTTY->termios->c_iflag; if (o_tios == NULL) { dummy.c_lflag = ~lflag; dummy.c_cflag = ~cflag; dummy.c_iflag = ~iflag; o_tios = &dummy; } { switch ( cflag & CBAUD ) { case B0: i2QueueCommands( PTYPE_BYPASS, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN); pCh->dataSetOut &= ~(I2_DTR | I2_RTS); i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25)); pCh->pTTY->termios->c_cflag |= (CBAUD & o_tios->c_cflag); goto service_it; break; case B38400: /* * This is the speed that is overloaded with all the other high * speeds, depending upon the flag settings. */ if ( ( pCh->flags & ASYNC_SPD_MASK ) == ASYNC_SPD_HI ) { pCh->speed = CBR_57600; } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI ) { pCh->speed = CBR_115200; } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST ) { pCh->speed = CBR_C1; } else { pCh->speed = CBR_38400; } break; case B50: pCh->speed = CBR_50; break; case B75: pCh->speed = CBR_75; break; case B110: pCh->speed = CBR_110; break; case B134: pCh->speed = CBR_134; break; case B150: pCh->speed = CBR_150; break; case B200: pCh->speed = CBR_200; break; case B300: pCh->speed = CBR_300; break; case B600: pCh->speed = CBR_600; break; case B1200: pCh->speed = CBR_1200; break; case B1800: pCh->speed = CBR_1800; break; case B2400: pCh->speed = CBR_2400; break; case B4800: pCh->speed = CBR_4800; break; case B9600: pCh->speed = CBR_9600; break; case B19200: pCh->speed = CBR_19200; break; case B57600: pCh->speed = CBR_57600; break; case B115200: pCh->speed = CBR_115200; break; case B153600: pCh->speed = CBR_153600; break; case B230400: pCh->speed = CBR_230400; break; case B307200: pCh->speed = CBR_307200; break; case B460800: pCh->speed = CBR_460800; break; case B921600: pCh->speed = CBR_921600; break; default: pCh->speed = CBR_9600; break; } if ( pCh->speed == CBR_C1 ) { // Process the custom speed parameters. int bps = pCh->BaudBase / pCh->BaudDivisor; if ( bps == 921600 ) { pCh->speed = CBR_921600; } else { bps = bps/10; i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_BAUD_DEF1(bps) ); } } i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_SETBAUD(pCh->speed)); i2QueueCommands ( PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP); pCh->dataSetOut |= (I2_DTR | I2_RTS); } if ( (CSTOPB & cflag) ^ (CSTOPB & o_tios->c_cflag)) { i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, CMD_SETSTOP( ( cflag & CSTOPB ) ? CST_2 : CST_1)); } if (((PARENB|PARODD) & cflag) ^ ((PARENB|PARODD) & o_tios->c_cflag)) { i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, CMD_SETPAR( (cflag & PARENB ? (cflag & PARODD ? CSP_OD : CSP_EV) : CSP_NP) ) ); } /* byte size and parity */ if ( (CSIZE & cflag)^(CSIZE & o_tios->c_cflag)) { int datasize; switch ( cflag & CSIZE ) { case CS5: datasize = CSZ_5; break; case CS6: datasize = CSZ_6; break; case CS7: datasize = CSZ_7; break; case CS8: datasize = CSZ_8; break; default: datasize = CSZ_5; break; /* as per serial.c */ } i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, CMD_SETBITS(datasize) ); } /* Process CTS flow control flag setting */ if ( (cflag & CRTSCTS) ) { i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_CTSFL_ENAB, CMD_RTSFL_ENAB); } else { i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB); } // // Process XON/XOFF flow control flags settings // stop_char = STOP_CHAR(pCh->pTTY); start_char = START_CHAR(pCh->pTTY); //////////// can't be \000 if (stop_char == __DISABLED_CHAR ) { stop_char = ~__DISABLED_CHAR; } if (start_char == __DISABLED_CHAR ) { start_char = ~__DISABLED_CHAR; } ///////////////////////////////// if ( o_tios->c_cc[VSTART] != start_char ) { i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXON(start_char)); i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXON(start_char)); } if ( o_tios->c_cc[VSTOP] != stop_char ) { i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXOFF(stop_char)); i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXOFF(stop_char)); } if (stop_char == __DISABLED_CHAR ) { stop_char = ~__DISABLED_CHAR; //TEST123 goto no_xoff; } if ((iflag & (IXOFF))^(o_tios->c_iflag & (IXOFF))) { if ( iflag & IXOFF ) { // Enable XOFF output flow control i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_XON)); } else { // Disable XOFF output flow control no_xoff: i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_NONE)); } } if (start_char == __DISABLED_CHAR ) { goto no_xon; } if ((iflag & (IXON|IXANY)) ^ (o_tios->c_iflag & (IXON|IXANY))) { if ( iflag & IXON ) { if ( iflag & IXANY ) { // Enable XON/XANY output flow control i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XANY)); } else { // Enable XON output flow control i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XON)); } } else { // Disable XON output flow control no_xon: i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_NONE)); } } if ( (iflag & ISTRIP) ^ ( o_tios->c_iflag & (ISTRIP)) ) { i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_ISTRIP_OPT((iflag & ISTRIP ? 1 : 0))); } if ( (iflag & INPCK) ^ ( o_tios->c_iflag & (INPCK)) ) { i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_PARCHK((iflag & INPCK) ? CPK_ENAB : CPK_DSAB)); } if ( (iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) ^ ( o_tios->c_iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) ) { char brkrpt = 0; char parrpt = 0; if ( iflag & IGNBRK ) { /* Ignore breaks altogether */ /* Ignore breaks altogether */ i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_NREP); } else { if ( iflag & BRKINT ) { if ( iflag & PARMRK ) { brkrpt = 0x0a; // exception an inline triple } else { brkrpt = 0x1a; // exception and NULL } brkrpt |= 0x04; // flush input } else { if ( iflag & PARMRK ) { brkrpt = 0x0b; //POSIX triple \0377 \0 \0 } else { brkrpt = 0x01; // Null only } } i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_REP(brkrpt)); } if (iflag & IGNPAR) { parrpt = 0x20; /* would be 2 for not cirrus bug */ /* would be 0x20 cept for cirrus bug */ } else { if ( iflag & PARMRK ) { /* * Replace error characters with 3-byte sequence (\0377,\0,char) */ parrpt = 0x04 ; i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_ISTRIP_OPT((char)0)); } else { parrpt = 0x03; } } i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SET_ERROR(parrpt)); } if (cflag & CLOCAL) { i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_NREP); pCh->flags &= ~ASYNC_CHECK_CD; } else { i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_REP); pCh->flags |= ASYNC_CHECK_CD; } #ifdef XXX do_flags_thing: // This is a test, we don't do the flags thing if ( (cflag & CRTSCTS) ) { cflag |= 014000000000; } i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_UNIX_FLAGS(iflag,cflag,lflag)); #endif service_it: i2DrainOutput( pCh, 100 ); } /******************************************************************************/ /* IPL Device Section */ /******************************************************************************/ /******************************************************************************/ /* Function: ip2_ipl_read() */ /* Parameters: Pointer to device inode */ /* Pointer to file structure */ /* Pointer to data */ /* Number of bytes to read */ /* Returns: Success or failure */ /* */ /* Description: Ugly */ /* */ /* */ /******************************************************************************/ static ssize_t ip2_ipl_read(struct file *pFile, char *pData, size_t count, loff_t *off ) { unsigned int minor = MINOR( pFile->f_dentry->d_inode->i_rdev ); int rc = 0; #ifdef IP2DEBUG_IPL printk (KERN_DEBUG "IP2IPL: read %p, %d bytes\n", pData, count ); #endif switch( minor ) { case 0: // IPL device rc = -EINVAL; break; case 1: // Status dump rc = -EINVAL; break; case 2: // Ping device rc = -EINVAL; break; case 3: // Trace device rc = DumpTraceBuffer ( pData, count ); break; case 4: // Trace device rc = DumpFifoBuffer ( pData, count ); break; default: rc = -ENODEV; break; } return rc; } static int DumpFifoBuffer ( char *pData, int count ) { #ifdef DEBUG_FIFO int rc=0; if(copy_to_user(pData, DBGBuf, count)) rc=-EFAULT; printk(KERN_DEBUG "Last index %d\n", I ); return count; #endif /* DEBUG_FIFO */ return 0; } static int DumpTraceBuffer ( char *pData, int count ) { #ifdef IP2DEBUG_TRACE int rc; int dumpcount; int chunk; int *pIndex = (int*)pData; if ( count < (sizeof(int) * 6) ) { return -EIO; } put_user(tracewrap, pIndex ); put_user(TRACEMAX, ++pIndex ); put_user(tracestrip, ++pIndex ); put_user(tracestuff, ++pIndex ); pData += sizeof(int) * 6; count -= sizeof(int) * 6; dumpcount = tracestuff - tracestrip; if ( dumpcount < 0 ) { dumpcount += TRACEMAX; } if ( dumpcount > count ) { dumpcount = count; } chunk = TRACEMAX - tracestrip; if ( dumpcount > chunk ) { rc=copy_to_user(pData, &tracebuf[tracestrip], chunk * sizeof(tracebuf[0]) )?-EFAULT:0; pData += chunk * sizeof(tracebuf[0]); tracestrip = 0; chunk = dumpcount - chunk; } else { chunk = dumpcount; } rc=copy_to_user(pData, &tracebuf[tracestrip], chunk * sizeof(tracebuf[0]) )?-EFAULT:0 tracestrip += chunk; tracewrap = 0; put_user(tracestrip, ++pIndex ); put_user(tracestuff, ++pIndex ); return dumpcount; #else return 0; #endif } /******************************************************************************/ /* Function: ip2_ipl_write() */ /* Parameters: */ /* Pointer to file structure */ /* Pointer to data */ /* Number of bytes to write */ /* Returns: Success or failure */ /* */ /* Description: */ /* */ /* */ /******************************************************************************/ static ssize_t ip2_ipl_write(struct file *pFile, const char *pData, size_t count, loff_t *off) { #ifdef IP2DEBUG_IPL printk (KERN_DEBUG "IP2IPL: write %p, %d bytes\n", pData, count ); #endif return 0; } /******************************************************************************/ /* Function: ip2_ipl_ioctl() */ /* Parameters: Pointer to device inode */ /* Pointer to file structure */ /* Command */ /* Argument */ /* Returns: Success or failure */ /* */ /* Description: */ /* */ /* */ /******************************************************************************/ static int ip2_ipl_ioctl ( struct inode *pInode, struct file *pFile, UINT cmd, ULONG arg ) { unsigned int iplminor = MINOR(pInode->i_rdev); int rc = 0; ULONG *pIndex = (ULONG*)arg; i2eBordStrPtr pB = i2BoardPtrTable[iplminor / 4]; i2ChanStrPtr pCh; #ifdef IP2DEBUG_IPL printk (KERN_DEBUG "IP2IPL: ioctl cmd %d, arg %ld\n", cmd, arg ); #endif switch ( iplminor ) { case 0: // IPL device rc = -EINVAL; break; case 1: // Status dump case 5: case 9: case 13: switch ( cmd ) { case 64: /* Driver - ip2stat */ put_user(ref_count, pIndex++ ); put_user(irq_counter, pIndex++ ); put_user(bh_counter, pIndex++ ); break; case 65: /* Board - ip2stat */ if ( pB ) { if(copy_to_user((char*)arg, (char*)pB, sizeof(i2eBordStr) )) rc=-EFAULT; put_user(INB(pB->i2eStatus), (ULONG*)(arg + (ULONG)(&pB->i2eStatus) - (ULONG)pB ) ); } else { rc = -ENODEV; } break; default: pCh = DevTable[cmd]; if ( pCh ) { if(copy_to_user((char*)arg, (char*)pCh, sizeof(i2ChanStr) )) rc = -EFAULT; } else { rc = cmd < 64 ? -ENODEV : -EINVAL; } } break; case 2: // Ping device rc = -EINVAL; break; case 3: // Trace device if ( cmd == 1 ) { put_user(iiSendPendingMail, pIndex++ ); put_user(i2InitChannels, pIndex++ ); put_user(i2QueueNeeds, pIndex++ ); put_user(i2QueueCommands, pIndex++ ); put_user(i2GetStatus, pIndex++ ); put_user(i2Input, pIndex++ ); put_user(i2InputFlush, pIndex++ ); put_user(i2Output, pIndex++ ); put_user(i2FlushOutput, pIndex++ ); put_user(i2DrainWakeup, pIndex++ ); put_user(i2DrainOutput, pIndex++ ); put_user(i2OutputFree, pIndex++ ); put_user(i2StripFifo, pIndex++ ); put_user(i2StuffFifoBypass, pIndex++ ); put_user(i2StuffFifoFlow, pIndex++ ); put_user(i2StuffFifoInline, pIndex++ ); put_user(i2ServiceBoard, pIndex++ ); put_user(serviceOutgoingFifo, pIndex++ ); // put_user(ip2_init, pIndex++ ); put_user(ip2_init_board, pIndex++ ); put_user(find_eisa_board, pIndex++ ); put_user(set_irq, pIndex++ ); put_user(ip2_interrupt, pIndex++ ); put_user(ip2_poll, pIndex++ ); put_user(service_all_boards, pIndex++ ); put_user(do_input, pIndex++ ); put_user(do_status, pIndex++ ); #ifndef IP2DEBUG_OPEN put_user(0, pIndex++ ); #else put_user(open_sanity_check, pIndex++ ); #endif put_user(ip2_open, pIndex++ ); put_user(ip2_close, pIndex++ ); put_user(ip2_hangup, pIndex++ ); put_user(ip2_write, pIndex++ ); put_user(ip2_putchar, pIndex++ ); put_user(ip2_flush_chars, pIndex++ ); put_user(ip2_write_room, pIndex++ ); put_user(ip2_chars_in_buf, pIndex++ ); put_user(ip2_flush_buffer, pIndex++ ); //put_user(ip2_wait_until_sent, pIndex++ ); put_user(0, pIndex++ ); put_user(ip2_throttle, pIndex++ ); put_user(ip2_unthrottle, pIndex++ ); put_user(ip2_ioctl, pIndex++ ); put_user(get_modem_info, pIndex++ ); put_user(set_modem_info, pIndex++ ); put_user(get_serial_info, pIndex++ ); put_user(set_serial_info, pIndex++ ); put_user(ip2_set_termios, pIndex++ ); put_user(ip2_set_line_discipline, pIndex++ ); put_user(set_params, pIndex++ ); } else { rc = -EINVAL; } break; default: rc = -ENODEV; break; } return rc; } /******************************************************************************/ /* Function: ip2_ipl_open() */ /* Parameters: Pointer to device inode */ /* Pointer to file structure */ /* Returns: Success or failure */ /* */ /* Description: */ /* */ /* */ /******************************************************************************/ static int ip2_ipl_open( struct inode *pInode, struct file *pFile ) { unsigned int iplminor = MINOR(pInode->i_rdev); i2eBordStrPtr pB; i2ChanStrPtr pCh; #ifdef IP2DEBUG_IPL printk (KERN_DEBUG "IP2IPL: open\n" ); #endif //MOD_INC_USE_COUNT; // Needs close entry with decrement. switch(iplminor) { // These are the IPL devices case 0: case 4: case 8: case 12: break; // These are the status devices case 1: case 5: case 9: case 13: break; // These are the debug devices case 2: case 6: case 10: case 14: pB = i2BoardPtrTable[iplminor / 4]; pCh = (i2ChanStrPtr) pB->i2eChannelPtr; break; // This is the trace device case 3: break; } return 0; } /******************************************************************************/ /* Function: ip2_read_procmem */ /* Parameters: */ /* */ /* Returns: Length of output */ /* */ /* Description: */ /* Supplies some driver operating parameters */ /* Not real useful unless your debugging the fifo */ /* */ /******************************************************************************/ #define LIMIT (PAGE_SIZE - 120) static int ip2_read_procmem(char *buf, char **start, off_t offset, int len) { i2eBordStrPtr pB; i2ChanStrPtr pCh; PTTY tty; int i; len = 0; #define FMTLINE "%3d: 0x%08x 0x%08x 0%011o 0%011o\n" #define FMTLIN2 " 0x%04x 0x%04x tx flow 0x%x\n" #define FMTLIN3 " 0x%04x 0x%04x rc flow\n" len += sprintf(buf+len,"\n"); for( i = 0; i < IP2_MAX_BOARDS; ++i ) { pB = i2BoardPtrTable[i]; if ( pB ) { len += sprintf(buf+len,"board %d:\n",i); len += sprintf(buf+len,"\tFifo rem: %d mty: %x outM %x\n", pB->i2eFifoRemains,pB->i2eWaitingForEmptyFifo,pB->i2eOutMailWaiting); } } len += sprintf(buf+len,"#: tty flags, port flags, cflags, iflags\n"); for (i=0; i < IP2_MAX_PORTS; i++) { if (len > LIMIT) break; pCh = DevTable[i]; if (pCh) { tty = pCh->pTTY; if (tty && tty->count) { len += sprintf(buf+len,FMTLINE,i,(int)tty->flags,pCh->flags, tty->termios->c_cflag,tty->termios->c_iflag); len += sprintf(buf+len,FMTLIN2, pCh->outfl.asof,pCh->outfl.room,pCh->channelNeeds); len += sprintf(buf+len,FMTLIN3,pCh->infl.asof,pCh->infl.room); } } } return len; } /* * This is the handler for /proc/tty/driver/ip2 * * This stretch of code has been largely plagerized from at least three * different sources including ip2mkdev.c and a couple of other drivers. * The bugs are all mine. :-) =mhw= */ int ip2_read_proc(char *page, char **start, off_t off, int count, int *eof, void *data) { int i, j, box; int len = 0; int boxes = 0; int ports = 0; int tports = 0; off_t begin = 0; i2eBordStrPtr pB; len += sprintf(page, "ip2info: 1.0 driver: %s\n", pcVersion ); len += sprintf(page+len, "Driver: SMajor=%d CMajor=%d IMajor=%d MaxBoards=%d MaxBoxes=%d MaxPorts=%d\n", IP2_TTY_MAJOR, IP2_CALLOUT_MAJOR, IP2_IPL_MAJOR, IP2_MAX_BOARDS, ABS_MAX_BOXES, ABS_BIGGEST_BOX); for( i = 0; i < IP2_MAX_BOARDS; ++i ) { /* This need to be reset for a board by board count... */ boxes = 0; pB = i2BoardPtrTable[i]; if( pB ) { switch( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) { case POR_ID_FIIEX: len += sprintf( page+len, "Board %d: EX ports=", i ); for( box = 0; box < ABS_MAX_BOXES; ++box ) { ports = 0; if( pB->i2eChannelMap[box] != 0 ) ++boxes; for( j = 0; j < ABS_BIGGEST_BOX; ++j ) { if( pB->i2eChannelMap[box] & 1<< j ) { ++ports; } } len += sprintf( page+len, "%d,", ports ); tports += ports; } --len; /* Backup over that last comma */ len += sprintf( page+len, " boxes=%d width=%d", boxes, pB->i2eDataWidth16 ? 16 : 8 ); break; case POR_ID_II_4: len += sprintf(page+len, "Board %d: ISA-4 ports=4 boxes=1", i ); tports = ports = 4; break; case POR_ID_II_8: len += sprintf(page+len, "Board %d: ISA-8-std ports=8 boxes=1", i ); tports = ports = 8; break; case POR_ID_II_8R: len += sprintf(page+len, "Board %d: ISA-8-RJ11 ports=8 boxes=1", i ); tports = ports = 8; break; default: len += sprintf(page+len, "Board %d: unknown", i ); /* Don't try and probe for minor numbers */ tports = ports = 0; } } else { /* Don't try and probe for minor numbers */ len += sprintf(page+len, "Board %d: vacant", i ); tports = ports = 0; } if( tports ) { len += sprintf(page+len, " minors=" ); for ( box = 0; box < ABS_MAX_BOXES; ++box ) { for ( j = 0; j < ABS_BIGGEST_BOX; ++j ) { if ( pB->i2eChannelMap[box] & (1 << j) ) { len += sprintf (page+len,"%d,", j + ABS_BIGGEST_BOX * (box+i*ABS_MAX_BOXES)); } } } page[ len - 1 ] = '\n'; /* Overwrite that last comma */ } else { len += sprintf (page+len,"\n" ); } if (len+begin > off+count) break; if (len+begin < off) { begin += len; len = 0; } } if (i >= IP2_MAX_BOARDS) *eof = 1; if (off >= len+begin) return 0; *start = page + (begin-off); return ((count < begin+len-off) ? count : begin+len-off); } /******************************************************************************/ /* Function: ip2trace() */ /* Parameters: Value to add to trace buffer */ /* Returns: Nothing */ /* */ /* Description: */ /* */ /* */ /******************************************************************************/ void ip2trace (unsigned short pn, unsigned char cat, unsigned char label, unsigned long codes, ...) { #ifdef IP2DEBUG_TRACE long flags; unsigned long *pCode = &codes; union ip2breadcrumb bc; i2ChanStrPtr pCh; tracebuf[tracestuff++] = jiffies; if ( tracestuff == TRACEMAX ) { tracestuff = 0; } if ( tracestuff == tracestrip ) { if ( ++tracestrip == TRACEMAX ) { tracestrip = 0; } ++tracewrap; } bc.hdr.port = 0xff & pn; bc.hdr.cat = cat; bc.hdr.codes = (unsigned char)( codes & 0xff ); bc.hdr.label = label; tracebuf[tracestuff++] = bc.value; for (;;) { if ( tracestuff == TRACEMAX ) { tracestuff = 0; } if ( tracestuff == tracestrip ) { if ( ++tracestrip == TRACEMAX ) { tracestrip = 0; } ++tracewrap; } if ( !codes-- ) break; tracebuf[tracestuff++] = *++pCode; } #endif } |