Eric Lee / smarc-fsl-linux-kernel

cyclades.c 111 KB
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 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 
#undef	BLOCKMOVE
#define	Z_WAKE
#undef	Z_EXT_CHARS_IN_BUFFER

/*
 * This file contains the driver for the Cyclades async multiport
 * serial boards.
 *
 * Initially written by Randolph Bentson <bentson@grieg.seaslug.org>.
 * Modified and maintained by Marcio Saito <marcio@cyclades.com>.
 *
 * Copyright (C) 2007-2009 Jiri Slaby <jirislaby@gmail.com>
 *
 * Much of the design and some of the code came from serial.c
 * which was copyright (C) 1991, 1992  Linus Torvalds.  It was
 * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92,
 * and then fixed as suggested by Michael K. Johnson 12/12/92.
 * Converted to pci probing and cleaned up by Jiri Slaby.
 *
 */

#define CY_VERSION	"2.6"

/* If you need to install more boards than NR_CARDS, change the constant
   in the definition below. No other change is necessary to support up to
   eight boards. Beyond that you'll have to extend cy_isa_addresses. */

#define NR_CARDS	4

/*
   If the total number of ports is larger than NR_PORTS, change this
   constant in the definition below. No other change is necessary to
   support more boards/ports. */

#define NR_PORTS	256

#define ZO_V1	0
#define ZO_V2	1
#define ZE_V1	2

#define	SERIAL_PARANOIA_CHECK
#undef	CY_DEBUG_OPEN
#undef	CY_DEBUG_THROTTLE
#undef	CY_DEBUG_OTHER
#undef	CY_DEBUG_IO
#undef	CY_DEBUG_COUNT
#undef	CY_DEBUG_DTR
#undef	CY_DEBUG_INTERRUPTS
#undef	CY_16Y_HACK
#undef	CY_ENABLE_MONITORING
#undef	CY_PCI_DEBUG

/*
 * Include section
 */
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/serial.h>
#include <linux/major.h>
#include <linux/string.h>
#include <linux/fcntl.h>
#include <linux/ptrace.h>
#include <linux/cyclades.h>
#include <linux/mm.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/spinlock.h>
#include <linux/bitops.h>
#include <linux/firmware.h>
#include <linux/device.h>
#include <linux/slab.h>

#include <linux/io.h>
#include <linux/uaccess.h>

#include <linux/kernel.h>
#include <linux/pci.h>

#include <linux/stat.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>

static void cy_send_xchar(struct tty_struct *tty, char ch);

#ifndef SERIAL_XMIT_SIZE
#define	SERIAL_XMIT_SIZE	(min(PAGE_SIZE, 4096))
#endif

#define STD_COM_FLAGS (0)

/* firmware stuff */
#define ZL_MAX_BLOCKS	16
#define DRIVER_VERSION	0x02010203
#define RAM_SIZE 0x80000

enum zblock_type {
	ZBLOCK_PRG = 0,
	ZBLOCK_FPGA = 1
};

struct zfile_header {
	char name[64];
	char date[32];
	char aux[32];
	u32 n_config;
	u32 config_offset;
	u32 n_blocks;
	u32 block_offset;
	u32 reserved[9];
} __attribute__ ((packed));

struct zfile_config {
	char name[64];
	u32 mailbox;
	u32 function;
	u32 n_blocks;
	u32 block_list[ZL_MAX_BLOCKS];
} __attribute__ ((packed));

struct zfile_block {
	u32 type;
	u32 file_offset;
	u32 ram_offset;
	u32 size;
} __attribute__ ((packed));

static struct tty_driver *cy_serial_driver;

#ifdef CONFIG_ISA
/* This is the address lookup table. The driver will probe for
   Cyclom-Y/ISA boards at all addresses in here. If you want the
   driver to probe addresses at a different address, add it to
   this table.  If the driver is probing some other board and
   causing problems, remove the offending address from this table.
*/

static unsigned int cy_isa_addresses[] = {
	0xD0000,
	0xD2000,
	0xD4000,
	0xD6000,
	0xD8000,
	0xDA000,
	0xDC000,
	0xDE000,
	0, 0, 0, 0, 0, 0, 0, 0
};

#define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses)

static long maddr[NR_CARDS];
static int irq[NR_CARDS];

module_param_array(maddr, long, NULL, 0);
module_param_array(irq, int, NULL, 0);

#endif				/* CONFIG_ISA */

/* This is the per-card data structure containing address, irq, number of
   channels, etc. This driver supports a maximum of NR_CARDS cards.
*/
static struct cyclades_card cy_card[NR_CARDS];

static int cy_next_channel;	/* next minor available */

/*
 * This is used to look up the divisor speeds and the timeouts
 * We're normally limited to 15 distinct baud rates.  The extra
 * are accessed via settings in info->port.flags.
 *      0,     1,     2,     3,     4,     5,     6,     7,     8,     9,
 *     10,    11,    12,    13,    14,    15,    16,    17,    18,    19,
 *                                               HI            VHI
 *     20
 */
static const int baud_table[] = {
	0, 50, 75, 110, 134, 150, 200, 300, 600, 1200,
	1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000,
	230400, 0
};

static const char baud_co_25[] = {	/* 25 MHz clock option table */
	/* value =>    00    01   02    03    04 */
	/* divide by    8    32   128   512  2048 */
	0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02,
	0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};

static const char baud_bpr_25[] = {	/* 25 MHz baud rate period table */
	0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3,
	0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15
};

static const char baud_co_60[] = {	/* 60 MHz clock option table (CD1400 J) */
	/* value =>    00    01   02    03    04 */
	/* divide by    8    32   128   512  2048 */
	0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03,
	0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00
};

static const char baud_bpr_60[] = {	/* 60 MHz baud rate period table (CD1400 J) */
	0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62,
	0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32,
	0x21
};

static const char baud_cor3[] = {	/* receive threshold */
	0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
	0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07,
	0x07
};

/*
 * The Cyclades driver implements HW flow control as any serial driver.
 * The cyclades_port structure member rflow and the vector rflow_thr
 * allows us to take advantage of a special feature in the CD1400 to avoid
 * data loss even when the system interrupt latency is too high. These flags
 * are to be used only with very special applications. Setting these flags
 * requires the use of a special cable (DTR and RTS reversed). In the new
 * CD1400-based boards (rev. 6.00 or later), there is no need for special
 * cables.
 */

static const char rflow_thr[] = {	/* rflow threshold */
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
	0x0a
};

/*  The Cyclom-Ye has placed the sequential chips in non-sequential
 *  address order.  This look-up table overcomes that problem.
 */
static const unsigned int cy_chip_offset[] = { 0x0000,
	0x0400,
	0x0800,
	0x0C00,
	0x0200,
	0x0600,
	0x0A00,
	0x0E00
};

/* PCI related definitions */

#ifdef CONFIG_PCI
static const struct pci_device_id cy_pci_dev_id[] = {
	/* PCI < 1Mb */
	{ PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) },
	/* PCI > 1Mb */
	{ PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) },
	/* 4Y PCI < 1Mb */
	{ PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) },
	/* 4Y PCI > 1Mb */
	{ PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) },
	/* 8Y PCI < 1Mb */
	{ PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) },
	/* 8Y PCI > 1Mb */
	{ PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) },
	/* Z PCI < 1Mb */
	{ PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) },
	/* Z PCI > 1Mb */
	{ PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) },
	{ }			/* end of table */
};
MODULE_DEVICE_TABLE(pci, cy_pci_dev_id);
#endif

static void cy_start(struct tty_struct *);
static void cy_set_line_char(struct cyclades_port *, struct tty_struct *);
static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32);
#ifdef CONFIG_ISA
static unsigned detect_isa_irq(void __iomem *);
#endif				/* CONFIG_ISA */

#ifndef CONFIG_CYZ_INTR
static void cyz_poll(unsigned long);

/* The Cyclades-Z polling cycle is defined by this variable */
static long cyz_polling_cycle = CZ_DEF_POLL;

static DEFINE_TIMER(cyz_timerlist, cyz_poll, 0, 0);

#else				/* CONFIG_CYZ_INTR */
static void cyz_rx_restart(unsigned long);
static struct timer_list cyz_rx_full_timer[NR_PORTS];
#endif				/* CONFIG_CYZ_INTR */

static inline void cyy_writeb(struct cyclades_port *port, u32 reg, u8 val)
{
	struct cyclades_card *card = port->card;

	cy_writeb(port->u.cyy.base_addr + (reg << card->bus_index), val);
}

static inline u8 cyy_readb(struct cyclades_port *port, u32 reg)
{
	struct cyclades_card *card = port->card;

	return readb(port->u.cyy.base_addr + (reg << card->bus_index));
}

static inline bool cy_is_Z(struct cyclades_card *card)
{
	return card->num_chips == (unsigned int)-1;
}

static inline bool __cyz_fpga_loaded(struct RUNTIME_9060 __iomem *ctl_addr)
{
	return readl(&ctl_addr->init_ctrl) & (1 << 17);
}

static inline bool cyz_fpga_loaded(struct cyclades_card *card)
{
	return __cyz_fpga_loaded(card->ctl_addr.p9060);
}

static inline bool cyz_is_loaded(struct cyclades_card *card)
{
	struct FIRM_ID __iomem *fw_id = card->base_addr + ID_ADDRESS;

	return (card->hw_ver == ZO_V1 || cyz_fpga_loaded(card)) &&
			readl(&fw_id->signature) == ZFIRM_ID;
}

static inline int serial_paranoia_check(struct cyclades_port *info,
		const char *name, const char *routine)
{
#ifdef SERIAL_PARANOIA_CHECK
	if (!info) {
		printk(KERN_WARNING "cyc Warning: null cyclades_port for (%s) "
				"in %s\n", name, routine);
		return 1;
	}

	if (info->magic != CYCLADES_MAGIC) {
		printk(KERN_WARNING "cyc Warning: bad magic number for serial "
				"struct (%s) in %s\n", name, routine);
		return 1;
	}
#endif
	return 0;
}

/***********************************************************/
/********* Start of block of Cyclom-Y specific code ********/

/* This routine waits up to 1000 micro-seconds for the previous
   command to the Cirrus chip to complete and then issues the
   new command.  An error is returned if the previous command
   didn't finish within the time limit.

   This function is only called from inside spinlock-protected code.
 */
static int __cyy_issue_cmd(void __iomem *base_addr, u8 cmd, int index)
{
	void __iomem *ccr = base_addr + (CyCCR << index);
	unsigned int i;

	/* Check to see that the previous command has completed */
	for (i = 0; i < 100; i++) {
		if (readb(ccr) == 0)
			break;
		udelay(10L);
	}
	/* if the CCR never cleared, the previous command
	   didn't finish within the "reasonable time" */
	if (i == 100)
		return -1;

	/* Issue the new command */
	cy_writeb(ccr, cmd);

	return 0;
}

static inline int cyy_issue_cmd(struct cyclades_port *port, u8 cmd)
{
	return __cyy_issue_cmd(port->u.cyy.base_addr, cmd,
			port->card->bus_index);
}

#ifdef CONFIG_ISA
/* ISA interrupt detection code */
static unsigned detect_isa_irq(void __iomem *address)
{
	int irq;
	unsigned long irqs, flags;
	int save_xir, save_car;
	int index = 0;		/* IRQ probing is only for ISA */

	/* forget possible initially masked and pending IRQ */
	irq = probe_irq_off(probe_irq_on());

	/* Clear interrupts on the board first */
	cy_writeb(address + (Cy_ClrIntr << index), 0);
	/* Cy_ClrIntr is 0x1800 */

	irqs = probe_irq_on();
	/* Wait ... */
	msleep(5);

	/* Enable the Tx interrupts on the CD1400 */
	local_irq_save(flags);
	cy_writeb(address + (CyCAR << index), 0);
	__cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index);

	cy_writeb(address + (CyCAR << index), 0);
	cy_writeb(address + (CySRER << index),
		  readb(address + (CySRER << index)) | CyTxRdy);
	local_irq_restore(flags);

	/* Wait ... */
	msleep(5);

	/* Check which interrupt is in use */
	irq = probe_irq_off(irqs);

	/* Clean up */
	save_xir = (u_char) readb(address + (CyTIR << index));
	save_car = readb(address + (CyCAR << index));
	cy_writeb(address + (CyCAR << index), (save_xir & 0x3));
	cy_writeb(address + (CySRER << index),
		  readb(address + (CySRER << index)) & ~CyTxRdy);
	cy_writeb(address + (CyTIR << index), (save_xir & 0x3f));
	cy_writeb(address + (CyCAR << index), (save_car));
	cy_writeb(address + (Cy_ClrIntr << index), 0);
	/* Cy_ClrIntr is 0x1800 */

	return (irq > 0) ? irq : 0;
}
#endif				/* CONFIG_ISA */

static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
		void __iomem *base_addr)
{
	struct cyclades_port *info;
	struct tty_struct *tty;
	int len, index = cinfo->bus_index;
	u8 ivr, save_xir, channel, save_car, data, char_count;

#ifdef CY_DEBUG_INTERRUPTS
	printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip);
#endif
	/* determine the channel & change to that context */
	save_xir = readb(base_addr + (CyRIR << index));
	channel = save_xir & CyIRChannel;
	info = &cinfo->ports[channel + chip * 4];
	save_car = cyy_readb(info, CyCAR);
	cyy_writeb(info, CyCAR, save_xir);
	ivr = cyy_readb(info, CyRIVR) & CyIVRMask;

	tty = tty_port_tty_get(&info->port);
	/* if there is nowhere to put the data, discard it */
	if (tty == NULL) {
		if (ivr == CyIVRRxEx) {	/* exception */
			data = cyy_readb(info, CyRDSR);
		} else {	/* normal character reception */
			char_count = cyy_readb(info, CyRDCR);
			while (char_count--)
				data = cyy_readb(info, CyRDSR);
		}
		goto end;
	}
	/* there is an open port for this data */
	if (ivr == CyIVRRxEx) {	/* exception */
		data = cyy_readb(info, CyRDSR);

		/* For statistics only */
		if (data & CyBREAK)
			info->icount.brk++;
		else if (data & CyFRAME)
			info->icount.frame++;
		else if (data & CyPARITY)
			info->icount.parity++;
		else if (data & CyOVERRUN)
			info->icount.overrun++;

		if (data & info->ignore_status_mask) {
			info->icount.rx++;
			tty_kref_put(tty);
			return;
		}
		if (tty_buffer_request_room(tty, 1)) {
			if (data & info->read_status_mask) {
				if (data & CyBREAK) {
					tty_insert_flip_char(tty,
						cyy_readb(info, CyRDSR),
						TTY_BREAK);
					info->icount.rx++;
					if (info->port.flags & ASYNC_SAK)
						do_SAK(tty);
				} else if (data & CyFRAME) {
					tty_insert_flip_char(tty,
						cyy_readb(info, CyRDSR),
						TTY_FRAME);
					info->icount.rx++;
					info->idle_stats.frame_errs++;
				} else if (data & CyPARITY) {
					/* Pieces of seven... */
					tty_insert_flip_char(tty,
						cyy_readb(info, CyRDSR),
						TTY_PARITY);
					info->icount.rx++;
					info->idle_stats.parity_errs++;
				} else if (data & CyOVERRUN) {
					tty_insert_flip_char(tty, 0,
							TTY_OVERRUN);
					info->icount.rx++;
					/* If the flip buffer itself is
					   overflowing, we still lose
					   the next incoming character.
					 */
					tty_insert_flip_char(tty,
						cyy_readb(info, CyRDSR),
						TTY_FRAME);
					info->icount.rx++;
					info->idle_stats.overruns++;
				/* These two conditions may imply */
				/* a normal read should be done. */
				/* } else if(data & CyTIMEOUT) { */
				/* } else if(data & CySPECHAR) { */
				} else {
					tty_insert_flip_char(tty, 0,
							TTY_NORMAL);
					info->icount.rx++;
				}
			} else {
				tty_insert_flip_char(tty, 0, TTY_NORMAL);
				info->icount.rx++;
			}
		} else {
			/* there was a software buffer overrun and nothing
			 * could be done about it!!! */
			info->icount.buf_overrun++;
			info->idle_stats.overruns++;
		}
	} else {	/* normal character reception */
		/* load # chars available from the chip */
		char_count = cyy_readb(info, CyRDCR);

#ifdef CY_ENABLE_MONITORING
		++info->mon.int_count;
		info->mon.char_count += char_count;
		if (char_count > info->mon.char_max)
			info->mon.char_max = char_count;
		info->mon.char_last = char_count;
#endif
		len = tty_buffer_request_room(tty, char_count);
		while (len--) {
			data = cyy_readb(info, CyRDSR);
			tty_insert_flip_char(tty, data, TTY_NORMAL);
			info->idle_stats.recv_bytes++;
			info->icount.rx++;
#ifdef CY_16Y_HACK
			udelay(10L);
#endif
		}
		info->idle_stats.recv_idle = jiffies;
	}
	tty_schedule_flip(tty);
	tty_kref_put(tty);
end:
	/* end of service */
	cyy_writeb(info, CyRIR, save_xir & 0x3f);
	cyy_writeb(info, CyCAR, save_car);
}

static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
		void __iomem *base_addr)
{
	struct cyclades_port *info;
	struct tty_struct *tty;
	int char_count, index = cinfo->bus_index;
	u8 save_xir, channel, save_car, outch;

	/* Since we only get here when the transmit buffer
	   is empty, we know we can always stuff a dozen
	   characters. */
#ifdef CY_DEBUG_INTERRUPTS
	printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip);
#endif

	/* determine the channel & change to that context */
	save_xir = readb(base_addr + (CyTIR << index));
	channel = save_xir & CyIRChannel;
	save_car = readb(base_addr + (CyCAR << index));
	cy_writeb(base_addr + (CyCAR << index), save_xir);

	info = &cinfo->ports[channel + chip * 4];
	tty = tty_port_tty_get(&info->port);
	if (tty == NULL) {
		cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy);
		goto end;
	}

	/* load the on-chip space for outbound data */
	char_count = info->xmit_fifo_size;

	if (info->x_char) {	/* send special char */
		outch = info->x_char;
		cyy_writeb(info, CyTDR, outch);
		char_count--;
		info->icount.tx++;
		info->x_char = 0;
	}

	if (info->breakon || info->breakoff) {
		if (info->breakon) {
			cyy_writeb(info, CyTDR, 0);
			cyy_writeb(info, CyTDR, 0x81);
			info->breakon = 0;
			char_count -= 2;
		}
		if (info->breakoff) {
			cyy_writeb(info, CyTDR, 0);
			cyy_writeb(info, CyTDR, 0x83);
			info->breakoff = 0;
			char_count -= 2;
		}
	}

	while (char_count-- > 0) {
		if (!info->xmit_cnt) {
			if (cyy_readb(info, CySRER) & CyTxMpty) {
				cyy_writeb(info, CySRER,
					cyy_readb(info, CySRER) & ~CyTxMpty);
			} else {
				cyy_writeb(info, CySRER, CyTxMpty |
					(cyy_readb(info, CySRER) & ~CyTxRdy));
			}
			goto done;
		}
		if (info->port.xmit_buf == NULL) {
			cyy_writeb(info, CySRER,
				cyy_readb(info, CySRER) & ~CyTxRdy);
			goto done;
		}
		if (tty->stopped || tty->hw_stopped) {
			cyy_writeb(info, CySRER,
				cyy_readb(info, CySRER) & ~CyTxRdy);
			goto done;
		}
		/* Because the Embedded Transmit Commands have been enabled,
		 * we must check to see if the escape character, NULL, is being
		 * sent. If it is, we must ensure that there is room for it to
		 * be doubled in the output stream.  Therefore we no longer
		 * advance the pointer when the character is fetched, but
		 * rather wait until after the check for a NULL output
		 * character. This is necessary because there may not be room
		 * for the two chars needed to send a NULL.)
		 */
		outch = info->port.xmit_buf[info->xmit_tail];
		if (outch) {
			info->xmit_cnt--;
			info->xmit_tail = (info->xmit_tail + 1) &
					(SERIAL_XMIT_SIZE - 1);
			cyy_writeb(info, CyTDR, outch);
			info->icount.tx++;
		} else {
			if (char_count > 1) {
				info->xmit_cnt--;
				info->xmit_tail = (info->xmit_tail + 1) &
					(SERIAL_XMIT_SIZE - 1);
				cyy_writeb(info, CyTDR, outch);
				cyy_writeb(info, CyTDR, 0);
				info->icount.tx++;
				char_count--;
			}
		}
	}

done:
	tty_wakeup(tty);
	tty_kref_put(tty);
end:
	/* end of service */
	cyy_writeb(info, CyTIR, save_xir & 0x3f);
	cyy_writeb(info, CyCAR, save_car);
}

static void cyy_chip_modem(struct cyclades_card *cinfo, int chip,
		void __iomem *base_addr)
{
	struct cyclades_port *info;
	struct tty_struct *tty;
	int index = cinfo->bus_index;
	u8 save_xir, channel, save_car, mdm_change, mdm_status;

	/* determine the channel & change to that context */
	save_xir = readb(base_addr + (CyMIR << index));
	channel = save_xir & CyIRChannel;
	info = &cinfo->ports[channel + chip * 4];
	save_car = cyy_readb(info, CyCAR);
	cyy_writeb(info, CyCAR, save_xir);

	mdm_change = cyy_readb(info, CyMISR);
	mdm_status = cyy_readb(info, CyMSVR1);

	tty = tty_port_tty_get(&info->port);
	if (!tty)
		goto end;

	if (mdm_change & CyANY_DELTA) {
		/* For statistics only */
		if (mdm_change & CyDCD)
			info->icount.dcd++;
		if (mdm_change & CyCTS)
			info->icount.cts++;
		if (mdm_change & CyDSR)
			info->icount.dsr++;
		if (mdm_change & CyRI)
			info->icount.rng++;

		wake_up_interruptible(&info->port.delta_msr_wait);
	}

	if ((mdm_change & CyDCD) && (info->port.flags & ASYNC_CHECK_CD)) {
		if (mdm_status & CyDCD)
			wake_up_interruptible(&info->port.open_wait);
		else
			tty_hangup(tty);
	}
	if ((mdm_change & CyCTS) && (info->port.flags & ASYNC_CTS_FLOW)) {
		if (tty->hw_stopped) {
			if (mdm_status & CyCTS) {
				/* cy_start isn't used
				   because... !!! */
				tty->hw_stopped = 0;
				cyy_writeb(info, CySRER,
					cyy_readb(info, CySRER) | CyTxRdy);
				tty_wakeup(tty);
			}
		} else {
			if (!(mdm_status & CyCTS)) {
				/* cy_stop isn't used
				   because ... !!! */
				tty->hw_stopped = 1;
				cyy_writeb(info, CySRER,
					cyy_readb(info, CySRER) & ~CyTxRdy);
			}
		}
	}
/*	if (mdm_change & CyDSR) {
	}
	if (mdm_change & CyRI) {
	}*/
	tty_kref_put(tty);
end:
	/* end of service */
	cyy_writeb(info, CyMIR, save_xir & 0x3f);
	cyy_writeb(info, CyCAR, save_car);
}

/* The real interrupt service routine is called
   whenever the card wants its hand held--chars
   received, out buffer empty, modem change, etc.
 */
static irqreturn_t cyy_interrupt(int irq, void *dev_id)
{
	int status;
	struct cyclades_card *cinfo = dev_id;
	void __iomem *base_addr, *card_base_addr;
	unsigned int chip, too_many, had_work;
	int index;

	if (unlikely(cinfo == NULL)) {
#ifdef CY_DEBUG_INTERRUPTS
		printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n",
				irq);
#endif
		return IRQ_NONE;	/* spurious interrupt */
	}

	card_base_addr = cinfo->base_addr;
	index = cinfo->bus_index;

	/* card was not initialized yet (e.g. DEBUG_SHIRQ) */
	if (unlikely(card_base_addr == NULL))
		return IRQ_HANDLED;

	/* This loop checks all chips in the card.  Make a note whenever
	   _any_ chip had some work to do, as this is considered an
	   indication that there will be more to do.  Only when no chip
	   has any work does this outermost loop exit.
	 */
	do {
		had_work = 0;
		for (chip = 0; chip < cinfo->num_chips; chip++) {
			base_addr = cinfo->base_addr +
					(cy_chip_offset[chip] << index);
			too_many = 0;
			while ((status = readb(base_addr +
						(CySVRR << index))) != 0x00) {
				had_work++;
			/* The purpose of the following test is to ensure that
			   no chip can monopolize the driver.  This forces the
			   chips to be checked in a round-robin fashion (after
			   draining each of a bunch (1000) of characters).
			 */
				if (1000 < too_many++)
					break;
				spin_lock(&cinfo->card_lock);
				if (status & CySRReceive) /* rx intr */
					cyy_chip_rx(cinfo, chip, base_addr);
				if (status & CySRTransmit) /* tx intr */
					cyy_chip_tx(cinfo, chip, base_addr);
				if (status & CySRModem) /* modem intr */
					cyy_chip_modem(cinfo, chip, base_addr);
				spin_unlock(&cinfo->card_lock);
			}
		}
	} while (had_work);

	/* clear interrupts */
	spin_lock(&cinfo->card_lock);
	cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0);
	/* Cy_ClrIntr is 0x1800 */
	spin_unlock(&cinfo->card_lock);
	return IRQ_HANDLED;
}				/* cyy_interrupt */

static void cyy_change_rts_dtr(struct cyclades_port *info, unsigned int set,
		unsigned int clear)
{
	struct cyclades_card *card = info->card;
	int channel = info->line - card->first_line;
	u32 rts, dtr, msvrr, msvrd;

	channel &= 0x03;

	if (info->rtsdtr_inv) {
		msvrr = CyMSVR2;
		msvrd = CyMSVR1;
		rts = CyDTR;
		dtr = CyRTS;
	} else {
		msvrr = CyMSVR1;
		msvrd = CyMSVR2;
		rts = CyRTS;
		dtr = CyDTR;
	}
	if (set & TIOCM_RTS) {
		cyy_writeb(info, CyCAR, channel);
		cyy_writeb(info, msvrr, rts);
	}
	if (clear & TIOCM_RTS) {
		cyy_writeb(info, CyCAR, channel);
		cyy_writeb(info, msvrr, ~rts);
	}
	if (set & TIOCM_DTR) {
		cyy_writeb(info, CyCAR, channel);
		cyy_writeb(info, msvrd, dtr);
#ifdef CY_DEBUG_DTR
		printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n");
		printk(KERN_DEBUG "     status: 0x%x, 0x%x\n",
			cyy_readb(info, CyMSVR1),
			cyy_readb(info, CyMSVR2));
#endif
	}
	if (clear & TIOCM_DTR) {
		cyy_writeb(info, CyCAR, channel);
		cyy_writeb(info, msvrd, ~dtr);
#ifdef CY_DEBUG_DTR
		printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n");
		printk(KERN_DEBUG "     status: 0x%x, 0x%x\n",
			cyy_readb(info, CyMSVR1),
			cyy_readb(info, CyMSVR2));
#endif
	}
}

/***********************************************************/
/********* End of block of Cyclom-Y specific code **********/
/******** Start of block of Cyclades-Z specific code *******/
/***********************************************************/

static int
cyz_fetch_msg(struct cyclades_card *cinfo,
		__u32 *channel, __u8 *cmd, __u32 *param)
{
	struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl;
	unsigned long loc_doorbell;

	loc_doorbell = readl(&cinfo->ctl_addr.p9060->loc_doorbell);
	if (loc_doorbell) {
		*cmd = (char)(0xff & loc_doorbell);
		*channel = readl(&board_ctrl->fwcmd_channel);
		*param = (__u32) readl(&board_ctrl->fwcmd_param);
		cy_writel(&cinfo->ctl_addr.p9060->loc_doorbell, 0xffffffff);
		return 1;
	}
	return 0;
}				/* cyz_fetch_msg */

static int
cyz_issue_cmd(struct cyclades_card *cinfo,
		__u32 channel, __u8 cmd, __u32 param)
{
	struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl;
	__u32 __iomem *pci_doorbell;
	unsigned int index;

	if (!cyz_is_loaded(cinfo))
		return -1;

	index = 0;
	pci_doorbell = &cinfo->ctl_addr.p9060->pci_doorbell;
	while ((readl(pci_doorbell) & 0xff) != 0) {
		if (index++ == 1000)
			return (int)(readl(pci_doorbell) & 0xff);
		udelay(50L);
	}
	cy_writel(&board_ctrl->hcmd_channel, channel);
	cy_writel(&board_ctrl->hcmd_param, param);
	cy_writel(pci_doorbell, (long)cmd);

	return 0;
}				/* cyz_issue_cmd */

static void cyz_handle_rx(struct cyclades_port *info, struct tty_struct *tty)
{
	struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl;
	struct cyclades_card *cinfo = info->card;
	unsigned int char_count;
	int len;
#ifdef BLOCKMOVE
	unsigned char *buf;
#else
	char data;
#endif
	__u32 rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr;

	rx_get = new_rx_get = readl(&buf_ctrl->rx_get);
	rx_put = readl(&buf_ctrl->rx_put);
	rx_bufsize = readl(&buf_ctrl->rx_bufsize);
	rx_bufaddr = readl(&buf_ctrl->rx_bufaddr);
	if (rx_put >= rx_get)
		char_count = rx_put - rx_get;
	else
		char_count = rx_put - rx_get + rx_bufsize;

	if (char_count) {
#ifdef CY_ENABLE_MONITORING
		info->mon.int_count++;
		info->mon.char_count += char_count;
		if (char_count > info->mon.char_max)
			info->mon.char_max = char_count;
		info->mon.char_last = char_count;
#endif
		if (tty == NULL) {
			/* flush received characters */
			new_rx_get = (new_rx_get + char_count) &
					(rx_bufsize - 1);
			info->rflush_count++;
		} else {
#ifdef BLOCKMOVE
		/* we'd like to use memcpy(t, f, n) and memset(s, c, count)
		   for performance, but because of buffer boundaries, there
		   may be several steps to the operation */
			while (1) {
				len = tty_prepare_flip_string(tty, &buf,
						char_count);
				if (!len)
					break;

				len = min_t(unsigned int, min(len, char_count),
						rx_bufsize - new_rx_get);

				memcpy_fromio(buf, cinfo->base_addr +
						rx_bufaddr + new_rx_get, len);

				new_rx_get = (new_rx_get + len) &
						(rx_bufsize - 1);
				char_count -= len;
				info->icount.rx += len;
				info->idle_stats.recv_bytes += len;
			}
#else
			len = tty_buffer_request_room(tty, char_count);
			while (len--) {
				data = readb(cinfo->base_addr + rx_bufaddr +
						new_rx_get);
				new_rx_get = (new_rx_get + 1) &
							(rx_bufsize - 1);
				tty_insert_flip_char(tty, data, TTY_NORMAL);
				info->idle_stats.recv_bytes++;
				info->icount.rx++;
			}
#endif
#ifdef CONFIG_CYZ_INTR
		/* Recalculate the number of chars in the RX buffer and issue
		   a cmd in case it's higher than the RX high water mark */
			rx_put = readl(&buf_ctrl->rx_put);
			if (rx_put >= rx_get)
				char_count = rx_put - rx_get;
			else
				char_count = rx_put - rx_get + rx_bufsize;
			if (char_count >= readl(&buf_ctrl->rx_threshold) &&
					!timer_pending(&cyz_rx_full_timer[
							info->line]))
				mod_timer(&cyz_rx_full_timer[info->line],
						jiffies + 1);
#endif
			info->idle_stats.recv_idle = jiffies;
			tty_schedule_flip(tty);
		}
		/* Update rx_get */
		cy_writel(&buf_ctrl->rx_get, new_rx_get);
	}
}

static void cyz_handle_tx(struct cyclades_port *info, struct tty_struct *tty)
{
	struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl;
	struct cyclades_card *cinfo = info->card;
	u8 data;
	unsigned int char_count;
#ifdef BLOCKMOVE
	int small_count;
#endif
	__u32 tx_put, tx_get, tx_bufsize, tx_bufaddr;

	if (info->xmit_cnt <= 0)	/* Nothing to transmit */
		return;

	tx_get = readl(&buf_ctrl->tx_get);
	tx_put = readl(&buf_ctrl->tx_put);
	tx_bufsize = readl(&buf_ctrl->tx_bufsize);
	tx_bufaddr = readl(&buf_ctrl->tx_bufaddr);
	if (tx_put >= tx_get)
		char_count = tx_get - tx_put - 1 + tx_bufsize;
	else
		char_count = tx_get - tx_put - 1;

	if (char_count) {

		if (tty == NULL)
			goto ztxdone;

		if (info->x_char) {	/* send special char */
			data = info->x_char;

			cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data);
			tx_put = (tx_put + 1) & (tx_bufsize - 1);
			info->x_char = 0;
			char_count--;
			info->icount.tx++;
		}
#ifdef BLOCKMOVE
		while (0 < (small_count = min_t(unsigned int,
				tx_bufsize - tx_put, min_t(unsigned int,
					(SERIAL_XMIT_SIZE - info->xmit_tail),
					min_t(unsigned int, info->xmit_cnt,
						char_count))))) {

			memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr +
					tx_put),
					&info->port.xmit_buf[info->xmit_tail],
					small_count);

			tx_put = (tx_put + small_count) & (tx_bufsize - 1);
			char_count -= small_count;
			info->icount.tx += small_count;
			info->xmit_cnt -= small_count;
			info->xmit_tail = (info->xmit_tail + small_count) &
					(SERIAL_XMIT_SIZE - 1);
		}
#else
		while (info->xmit_cnt && char_count) {
			data = info->port.xmit_buf[info->xmit_tail];
			info->xmit_cnt--;
			info->xmit_tail = (info->xmit_tail + 1) &
					(SERIAL_XMIT_SIZE - 1);

			cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data);
			tx_put = (tx_put + 1) & (tx_bufsize - 1);
			char_count--;
			info->icount.tx++;
		}
#endif
		tty_wakeup(tty);
ztxdone:
		/* Update tx_put */
		cy_writel(&buf_ctrl->tx_put, tx_put);
	}
}

static void cyz_handle_cmd(struct cyclades_card *cinfo)
{
	struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl;
	struct tty_struct *tty;
	struct cyclades_port *info;
	__u32 channel, param, fw_ver;
	__u8 cmd;
	int special_count;
	int delta_count;

	fw_ver = readl(&board_ctrl->fw_version);

	while (cyz_fetch_msg(cinfo, &channel, &cmd, &param) == 1) {
		special_count = 0;
		delta_count = 0;
		info = &cinfo->ports[channel];
		tty = tty_port_tty_get(&info->port);
		if (tty == NULL)
			continue;

		switch (cmd) {
		case C_CM_PR_ERROR:
			tty_insert_flip_char(tty, 0, TTY_PARITY);
			info->icount.rx++;
			special_count++;
			break;
		case C_CM_FR_ERROR:
			tty_insert_flip_char(tty, 0, TTY_FRAME);
			info->icount.rx++;
			special_count++;
			break;
		case C_CM_RXBRK:
			tty_insert_flip_char(tty, 0, TTY_BREAK);
			info->icount.rx++;
			special_count++;
			break;
		case C_CM_MDCD:
			info->icount.dcd++;
			delta_count++;
			if (info->port.flags & ASYNC_CHECK_CD) {
				u32 dcd = fw_ver > 241 ? param :
					readl(&info->u.cyz.ch_ctrl->rs_status);
				if (dcd & C_RS_DCD)
					wake_up_interruptible(&info->port.open_wait);
				else
					tty_hangup(tty);
			}
			break;
		case C_CM_MCTS:
			info->icount.cts++;
			delta_count++;
			break;
		case C_CM_MRI:
			info->icount.rng++;
			delta_count++;
			break;
		case C_CM_MDSR:
			info->icount.dsr++;
			delta_count++;
			break;
#ifdef Z_WAKE
		case C_CM_IOCTLW:
			complete(&info->shutdown_wait);
			break;
#endif
#ifdef CONFIG_CYZ_INTR
		case C_CM_RXHIWM:
		case C_CM_RXNNDT:
		case C_CM_INTBACK2:
			/* Reception Interrupt */
#ifdef CY_DEBUG_INTERRUPTS
			printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, "
					"port %ld\n", info->card, channel);
#endif
			cyz_handle_rx(info, tty);
			break;
		case C_CM_TXBEMPTY:
		case C_CM_TXLOWWM:
		case C_CM_INTBACK:
			/* Transmission Interrupt */
#ifdef CY_DEBUG_INTERRUPTS
			printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, "
					"port %ld\n", info->card, channel);
#endif
			cyz_handle_tx(info, tty);
			break;
#endif				/* CONFIG_CYZ_INTR */
		case C_CM_FATAL:
			/* should do something with this !!! */
			break;
		default:
			break;
		}
		if (delta_count)
			wake_up_interruptible(&info->port.delta_msr_wait);
		if (special_count)
			tty_schedule_flip(tty);
		tty_kref_put(tty);
	}
}

#ifdef CONFIG_CYZ_INTR
static irqreturn_t cyz_interrupt(int irq, void *dev_id)
{
	struct cyclades_card *cinfo = dev_id;

	if (unlikely(!cyz_is_loaded(cinfo))) {
#ifdef CY_DEBUG_INTERRUPTS
		printk(KERN_DEBUG "cyz_interrupt: board not yet loaded "
				"(IRQ%d).\n", irq);
#endif
		return IRQ_NONE;
	}

	/* Handle the interrupts */
	cyz_handle_cmd(cinfo);

	return IRQ_HANDLED;
}				/* cyz_interrupt */

static void cyz_rx_restart(unsigned long arg)
{
	struct cyclades_port *info = (struct cyclades_port *)arg;
	struct cyclades_card *card = info->card;
	int retval;
	__u32 channel = info->line - card->first_line;
	unsigned long flags;

	spin_lock_irqsave(&card->card_lock, flags);
	retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L);
	if (retval != 0) {
		printk(KERN_ERR "cyc:cyz_rx_restart retval on ttyC%d was %x\n",
			info->line, retval);
	}
	spin_unlock_irqrestore(&card->card_lock, flags);
}

#else				/* CONFIG_CYZ_INTR */

static void cyz_poll(unsigned long arg)
{
	struct cyclades_card *cinfo;
	struct cyclades_port *info;
	unsigned long expires = jiffies + HZ;
	unsigned int port, card;

	for (card = 0; card < NR_CARDS; card++) {
		cinfo = &cy_card[card];

		if (!cy_is_Z(cinfo))
			continue;
		if (!cyz_is_loaded(cinfo))
			continue;

	/* Skip first polling cycle to avoid racing conditions with the FW */
		if (!cinfo->intr_enabled) {
			cinfo->intr_enabled = 1;
			continue;
		}

		cyz_handle_cmd(cinfo);

		for (port = 0; port < cinfo->nports; port++) {
			struct tty_struct *tty;

			info = &cinfo->ports[port];
			tty = tty_port_tty_get(&info->port);
			/* OK to pass NULL to the handle functions below.
			   They need to drop the data in that case. */

			if (!info->throttle)
				cyz_handle_rx(info, tty);
			cyz_handle_tx(info, tty);
			tty_kref_put(tty);
		}
		/* poll every 'cyz_polling_cycle' period */
		expires = jiffies + cyz_polling_cycle;
	}
	mod_timer(&cyz_timerlist, expires);
}				/* cyz_poll */

#endif				/* CONFIG_CYZ_INTR */

/********** End of block of Cyclades-Z specific code *********/
/***********************************************************/

/* This is called whenever a port becomes active;
   interrupts are enabled and DTR & RTS are turned on.
 */
static int cy_startup(struct cyclades_port *info, struct tty_struct *tty)
{
	struct cyclades_card *card;
	unsigned long flags;
	int retval = 0;
	int channel;
	unsigned long page;

	card = info->card;
	channel = info->line - card->first_line;

	page = get_zeroed_page(GFP_KERNEL);
	if (!page)
		return -ENOMEM;

	spin_lock_irqsave(&card->card_lock, flags);

	if (info->port.flags & ASYNC_INITIALIZED)
		goto errout;

	if (!info->type) {
		set_bit(TTY_IO_ERROR, &tty->flags);
		goto errout;
	}

	if (info->port.xmit_buf)
		free_page(page);
	else
		info->port.xmit_buf = (unsigned char *)page;

	spin_unlock_irqrestore(&card->card_lock, flags);

	cy_set_line_char(info, tty);

	if (!cy_is_Z(card)) {
		channel &= 0x03;

		spin_lock_irqsave(&card->card_lock, flags);

		cyy_writeb(info, CyCAR, channel);

		cyy_writeb(info, CyRTPR,
			(info->default_timeout ? info->default_timeout : 0x02));
		/* 10ms rx timeout */

		cyy_issue_cmd(info, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR);

		cyy_change_rts_dtr(info, TIOCM_RTS | TIOCM_DTR, 0);

		cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyRxData);
	} else {
		struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;

		if (!cyz_is_loaded(card))
			return -ENODEV;

#ifdef CY_DEBUG_OPEN
		printk(KERN_DEBUG "cyc startup Z card %d, channel %d, "
			"base_addr %p\n", card, channel, card->base_addr);
#endif
		spin_lock_irqsave(&card->card_lock, flags);

		cy_writel(&ch_ctrl->op_mode, C_CH_ENABLE);
#ifdef Z_WAKE
#ifdef CONFIG_CYZ_INTR
		cy_writel(&ch_ctrl->intr_enable,
			  C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM |
			  C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD);
#else
		cy_writel(&ch_ctrl->intr_enable,
			  C_IN_IOCTLW | C_IN_MDCD);
#endif				/* CONFIG_CYZ_INTR */
#else
#ifdef CONFIG_CYZ_INTR
		cy_writel(&ch_ctrl->intr_enable,
			  C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM |
			  C_IN_RXNNDT | C_IN_MDCD);
#else
		cy_writel(&ch_ctrl->intr_enable, C_IN_MDCD);
#endif				/* CONFIG_CYZ_INTR */
#endif				/* Z_WAKE */

		retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L);
		if (retval != 0) {
			printk(KERN_ERR "cyc:startup(1) retval on ttyC%d was "
				"%x\n", info->line, retval);
		}

		/* Flush RX buffers before raising DTR and RTS */
		retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_RX, 0L);
		if (retval != 0) {
			printk(KERN_ERR "cyc:startup(2) retval on ttyC%d was "
				"%x\n", info->line, retval);
		}

		/* set timeout !!! */
		/* set RTS and DTR !!! */
		tty_port_raise_dtr_rts(&info->port);

		/* enable send, recv, modem !!! */
	}

	info->port.flags |= ASYNC_INITIALIZED;

	clear_bit(TTY_IO_ERROR, &tty->flags);
	info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
	info->breakon = info->breakoff = 0;
	memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats));
	info->idle_stats.in_use =
	info->idle_stats.recv_idle =
	info->idle_stats.xmit_idle = jiffies;

	spin_unlock_irqrestore(&card->card_lock, flags);

#ifdef CY_DEBUG_OPEN
	printk(KERN_DEBUG "cyc startup done\n");
#endif
	return 0;

errout:
	spin_unlock_irqrestore(&card->card_lock, flags);
	free_page(page);
	return retval;
}				/* startup */

static void start_xmit(struct cyclades_port *info)
{
	struct cyclades_card *card = info->card;
	unsigned long flags;
	int channel = info->line - card->first_line;

	if (!cy_is_Z(card)) {
		spin_lock_irqsave(&card->card_lock, flags);
		cyy_writeb(info, CyCAR, channel & 0x03);
		cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy);
		spin_unlock_irqrestore(&card->card_lock, flags);
	} else {
#ifdef CONFIG_CYZ_INTR
		int retval;

		spin_lock_irqsave(&card->card_lock, flags);
		retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L);
		if (retval != 0) {
			printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was "
				"%x\n", info->line, retval);
		}
		spin_unlock_irqrestore(&card->card_lock, flags);
#else				/* CONFIG_CYZ_INTR */
		/* Don't have to do anything at this time */
#endif				/* CONFIG_CYZ_INTR */
	}
}				/* start_xmit */

/*
 * This routine shuts down a serial port; interrupts are disabled,
 * and DTR is dropped if the hangup on close termio flag is on.
 */
static void cy_shutdown(struct cyclades_port *info, struct tty_struct *tty)
{
	struct cyclades_card *card;
	unsigned long flags;

	if (!(info->port.flags & ASYNC_INITIALIZED))
		return;

	card = info->card;
	if (!cy_is_Z(card)) {
		spin_lock_irqsave(&card->card_lock, flags);

		/* Clear delta_msr_wait queue to avoid mem leaks. */
		wake_up_interruptible(&info->port.delta_msr_wait);

		if (info->port.xmit_buf) {
			unsigned char *temp;
			temp = info->port.xmit_buf;
			info->port.xmit_buf = NULL;
			free_page((unsigned long)temp);
		}
		if (tty->termios->c_cflag & HUPCL)
			cyy_change_rts_dtr(info, 0, TIOCM_RTS | TIOCM_DTR);

		cyy_issue_cmd(info, CyCHAN_CTL | CyDIS_RCVR);
		/* it may be appropriate to clear _XMIT at
		   some later date (after testing)!!! */

		set_bit(TTY_IO_ERROR, &tty->flags);
		info->port.flags &= ~ASYNC_INITIALIZED;
		spin_unlock_irqrestore(&card->card_lock, flags);
	} else {
#ifdef CY_DEBUG_OPEN
		int channel = info->line - card->first_line;
		printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, "
			"base_addr %p\n", card, channel, card->base_addr);
#endif

		if (!cyz_is_loaded(card))
			return;

		spin_lock_irqsave(&card->card_lock, flags);

		if (info->port.xmit_buf) {
			unsigned char *temp;
			temp = info->port.xmit_buf;
			info->port.xmit_buf = NULL;
			free_page((unsigned long)temp);
		}

		if (tty->termios->c_cflag & HUPCL)
			tty_port_lower_dtr_rts(&info->port);

		set_bit(TTY_IO_ERROR, &tty->flags);
		info->port.flags &= ~ASYNC_INITIALIZED;

		spin_unlock_irqrestore(&card->card_lock, flags);
	}

#ifdef CY_DEBUG_OPEN
	printk(KERN_DEBUG "cyc shutdown done\n");
#endif
}				/* shutdown */

/*
 * ------------------------------------------------------------
 * cy_open() and friends
 * ------------------------------------------------------------
 */

/*
 * This routine is called whenever a serial port is opened.  It
 * performs the serial-specific initialization for the tty structure.
 */
static int cy_open(struct tty_struct *tty, struct file *filp)
{
	struct cyclades_port *info;
	unsigned int i, line;
	int retval;

	line = tty->index;
	if (tty->index < 0 || NR_PORTS <= line)
		return -ENODEV;

	for (i = 0; i < NR_CARDS; i++)
		if (line < cy_card[i].first_line + cy_card[i].nports &&
				line >= cy_card[i].first_line)
			break;
	if (i >= NR_CARDS)
		return -ENODEV;
	info = &cy_card[i].ports[line - cy_card[i].first_line];
	if (info->line < 0)
		return -ENODEV;

	/* If the card's firmware hasn't been loaded,
	   treat it as absent from the system.  This
	   will make the user pay attention.
	 */
	if (cy_is_Z(info->card)) {
		struct cyclades_card *cinfo = info->card;
		struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS;

		if (!cyz_is_loaded(cinfo)) {
			if (cinfo->hw_ver == ZE_V1 && cyz_fpga_loaded(cinfo) &&
					readl(&firm_id->signature) ==
					ZFIRM_HLT) {
				printk(KERN_ERR "cyc:Cyclades-Z Error: you "
					"need an external power supply for "
					"this number of ports.\nFirmware "
					"halted.\n");
			} else {
				printk(KERN_ERR "cyc:Cyclades-Z firmware not "
					"yet loaded\n");
			}
			return -ENODEV;
		}
#ifdef CONFIG_CYZ_INTR
		else {
		/* In case this Z board is operating in interrupt mode, its
		   interrupts should be enabled as soon as the first open
		   happens to one of its ports. */
			if (!cinfo->intr_enabled) {
				u16 intr;

				/* Enable interrupts on the PLX chip */
				intr = readw(&cinfo->ctl_addr.p9060->
						intr_ctrl_stat) | 0x0900;
				cy_writew(&cinfo->ctl_addr.p9060->
						intr_ctrl_stat, intr);
				/* Enable interrupts on the FW */
				retval = cyz_issue_cmd(cinfo, 0,
						C_CM_IRQ_ENBL, 0L);
				if (retval != 0) {
					printk(KERN_ERR "cyc:IRQ enable retval "
						"was %x\n", retval);
				}
				cinfo->intr_enabled = 1;
			}
		}
#endif				/* CONFIG_CYZ_INTR */
		/* Make sure this Z port really exists in hardware */
		if (info->line > (cinfo->first_line + cinfo->nports - 1))
			return -ENODEV;
	}
#ifdef CY_DEBUG_OTHER
	printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line);
#endif
	tty->driver_data = info;
	if (serial_paranoia_check(info, tty->name, "cy_open"))
		return -ENODEV;

#ifdef CY_DEBUG_OPEN
	printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line,
			info->port.count);
#endif
	info->port.count++;
#ifdef CY_DEBUG_COUNT
	printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n",
		current->pid, info->port.count);
#endif

	/*
	 * If the port is the middle of closing, bail out now
	 */
	if (tty_hung_up_p(filp) || (info->port.flags & ASYNC_CLOSING)) {
		wait_event_interruptible_tty(info->port.close_wait,
				!(info->port.flags & ASYNC_CLOSING));
		return (info->port.flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS;
	}

	/*
	 * Start up serial port
	 */
	retval = cy_startup(info, tty);
	if (retval)
		return retval;

	retval = tty_port_block_til_ready(&info->port, tty, filp);
	if (retval) {
#ifdef CY_DEBUG_OPEN
		printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready "
			"with %d\n", retval);
#endif
		return retval;
	}

	info->throttle = 0;
	tty_port_tty_set(&info->port, tty);

#ifdef CY_DEBUG_OPEN
	printk(KERN_DEBUG "cyc:cy_open done\n");
#endif
	return 0;
}				/* cy_open */

/*
 * cy_wait_until_sent() --- wait until the transmitter is empty
 */
static void cy_wait_until_sent(struct tty_struct *tty, int timeout)
{
	struct cyclades_card *card;
	struct cyclades_port *info = tty->driver_data;
	unsigned long orig_jiffies;
	int char_time;

	if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent"))
		return;

	if (info->xmit_fifo_size == 0)
		return;		/* Just in case.... */

	orig_jiffies = jiffies;
	/*
	 * Set the check interval to be 1/5 of the estimated time to
	 * send a single character, and make it at least 1.  The check
	 * interval should also be less than the timeout.
	 *
	 * Note: we have to use pretty tight timings here to satisfy
	 * the NIST-PCTS.
	 */
	char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size;
	char_time = char_time / 5;
	if (char_time <= 0)
		char_time = 1;
	if (timeout < 0)
		timeout = 0;
	if (timeout)
		char_time = min(char_time, timeout);
	/*
	 * If the transmitter hasn't cleared in twice the approximate
	 * amount of time to send the entire FIFO, it probably won't
	 * ever clear.  This assumes the UART isn't doing flow
	 * control, which is currently the case.  Hence, if it ever
	 * takes longer than info->timeout, this is probably due to a
	 * UART bug of some kind.  So, we clamp the timeout parameter at
	 * 2*info->timeout.
	 */
	if (!timeout || timeout > 2 * info->timeout)
		timeout = 2 * info->timeout;

	card = info->card;
	if (!cy_is_Z(card)) {
		while (cyy_readb(info, CySRER) & CyTxRdy) {
			if (msleep_interruptible(jiffies_to_msecs(char_time)))
				break;
			if (timeout && time_after(jiffies, orig_jiffies +
					timeout))
				break;
		}
	}
	/* Run one more char cycle */
	msleep_interruptible(jiffies_to_msecs(char_time * 5));
}

static void cy_flush_buffer(struct tty_struct *tty)
{
	struct cyclades_port *info = tty->driver_data;
	struct cyclades_card *card;
	int channel, retval;
	unsigned long flags;

#ifdef CY_DEBUG_IO
	printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line);
#endif

	if (serial_paranoia_check(info, tty->name, "cy_flush_buffer"))
		return;

	card = info->card;
	channel = info->line - card->first_line;

	spin_lock_irqsave(&card->card_lock, flags);
	info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
	spin_unlock_irqrestore(&card->card_lock, flags);

	if (cy_is_Z(card)) {	/* If it is a Z card, flush the on-board
					   buffers as well */
		spin_lock_irqsave(&card->card_lock, flags);
		retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L);
		if (retval != 0) {
			printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d "
				"was %x\n", info->line, retval);
		}
		spin_unlock_irqrestore(&card->card_lock, flags);
	}
	tty_wakeup(tty);
}				/* cy_flush_buffer */


static void cy_do_close(struct tty_port *port)
{
	struct cyclades_port *info = container_of(port, struct cyclades_port,
								port);
	struct cyclades_card *card;
	unsigned long flags;
	int channel;

	card = info->card;
	channel = info->line - card->first_line;
	spin_lock_irqsave(&card->card_lock, flags);

	if (!cy_is_Z(card)) {
		/* Stop accepting input */
		cyy_writeb(info, CyCAR, channel & 0x03);
		cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyRxData);
		if (info->port.flags & ASYNC_INITIALIZED) {
			/* Waiting for on-board buffers to be empty before
			   closing the port */
			spin_unlock_irqrestore(&card->card_lock, flags);
			cy_wait_until_sent(port->tty, info->timeout);
			spin_lock_irqsave(&card->card_lock, flags);
		}
	} else {
#ifdef Z_WAKE
		/* Waiting for on-board buffers to be empty before closing
		   the port */
		struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
		int retval;

		if (readl(&ch_ctrl->flow_status) != C_FS_TXIDLE) {
			retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L);
			if (retval != 0) {
				printk(KERN_DEBUG "cyc:cy_close retval on "
					"ttyC%d was %x\n", info->line, retval);
			}
			spin_unlock_irqrestore(&card->card_lock, flags);
			wait_for_completion_interruptible(&info->shutdown_wait);
			spin_lock_irqsave(&card->card_lock, flags);
		}
#endif
	}
	spin_unlock_irqrestore(&card->card_lock, flags);
	cy_shutdown(info, port->tty);
}

/*
 * This routine is called when a particular tty device is closed.
 */
static void cy_close(struct tty_struct *tty, struct file *filp)
{
	struct cyclades_port *info = tty->driver_data;
	if (!info || serial_paranoia_check(info, tty->name, "cy_close"))
		return;
	tty_port_close(&info->port, tty, filp);
}				/* cy_close */

/* This routine gets called when tty_write has put something into
 * the write_queue.  The characters may come from user space or
 * kernel space.
 *
 * This routine will return the number of characters actually
 * accepted for writing.
 *
 * If the port is not already transmitting stuff, start it off by
 * enabling interrupts.  The interrupt service routine will then
 * ensure that the characters are sent.
 * If the port is already active, there is no need to kick it.
 *
 */
static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count)
{
	struct cyclades_port *info = tty->driver_data;
	unsigned long flags;
	int c, ret = 0;

#ifdef CY_DEBUG_IO
	printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line);
#endif

	if (serial_paranoia_check(info, tty->name, "cy_write"))
		return 0;

	if (!info->port.xmit_buf)
		return 0;

	spin_lock_irqsave(&info->card->card_lock, flags);
	while (1) {
		c = min(count, (int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1));
		c = min(c, (int)(SERIAL_XMIT_SIZE - info->xmit_head));

		if (c <= 0)
			break;

		memcpy(info->port.xmit_buf + info->xmit_head, buf, c);
		info->xmit_head = (info->xmit_head + c) &
			(SERIAL_XMIT_SIZE - 1);
		info->xmit_cnt += c;
		buf += c;
		count -= c;
		ret += c;
	}
	spin_unlock_irqrestore(&info->card->card_lock, flags);

	info->idle_stats.xmit_bytes += ret;
	info->idle_stats.xmit_idle = jiffies;

	if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped)
		start_xmit(info);

	return ret;
}				/* cy_write */

/*
 * This routine is called by the kernel to write a single
 * character to the tty device.  If the kernel uses this routine,
 * it must call the flush_chars() routine (if defined) when it is
 * done stuffing characters into the driver.  If there is no room
 * in the queue, the character is ignored.
 */
static int cy_put_char(struct tty_struct *tty, unsigned char ch)
{
	struct cyclades_port *info = tty->driver_data;
	unsigned long flags;

#ifdef CY_DEBUG_IO
	printk(KERN_DEBUG "cyc:cy_put_char ttyC%d\n", info->line);
#endif

	if (serial_paranoia_check(info, tty->name, "cy_put_char"))
		return 0;

	if (!info->port.xmit_buf)
		return 0;

	spin_lock_irqsave(&info->card->card_lock, flags);
	if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) {
		spin_unlock_irqrestore(&info->card->card_lock, flags);
		return 0;
	}

	info->port.xmit_buf[info->xmit_head++] = ch;
	info->xmit_head &= SERIAL_XMIT_SIZE - 1;
	info->xmit_cnt++;
	info->idle_stats.xmit_bytes++;
	info->idle_stats.xmit_idle = jiffies;
	spin_unlock_irqrestore(&info->card->card_lock, flags);
	return 1;
}				/* cy_put_char */

/*
 * This routine is called by the kernel after it has written a
 * series of characters to the tty device using put_char().
 */
static void cy_flush_chars(struct tty_struct *tty)
{
	struct cyclades_port *info = tty->driver_data;

#ifdef CY_DEBUG_IO
	printk(KERN_DEBUG "cyc:cy_flush_chars ttyC%d\n", info->line);
#endif

	if (serial_paranoia_check(info, tty->name, "cy_flush_chars"))
		return;

	if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
			!info->port.xmit_buf)
		return;

	start_xmit(info);
}				/* cy_flush_chars */

/*
 * This routine returns the numbers of characters the tty driver
 * will accept for queuing to be written.  This number is subject
 * to change as output buffers get emptied, or if the output flow
 * control is activated.
 */
static int cy_write_room(struct tty_struct *tty)
{
	struct cyclades_port *info = tty->driver_data;
	int ret;

#ifdef CY_DEBUG_IO
	printk(KERN_DEBUG "cyc:cy_write_room ttyC%d\n", info->line);
#endif

	if (serial_paranoia_check(info, tty->name, "cy_write_room"))
		return 0;
	ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1;
	if (ret < 0)
		ret = 0;
	return ret;
}				/* cy_write_room */

static int cy_chars_in_buffer(struct tty_struct *tty)
{
	struct cyclades_port *info = tty->driver_data;

	if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer"))
		return 0;

#ifdef Z_EXT_CHARS_IN_BUFFER
	if (!cy_is_Z(info->card)) {
#endif				/* Z_EXT_CHARS_IN_BUFFER */
#ifdef CY_DEBUG_IO
		printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n",
			info->line, info->xmit_cnt);
#endif
		return info->xmit_cnt;
#ifdef Z_EXT_CHARS_IN_BUFFER
	} else {
		struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl;
		int char_count;
		__u32 tx_put, tx_get, tx_bufsize;

		tx_get = readl(&buf_ctrl->tx_get);
		tx_put = readl(&buf_ctrl->tx_put);
		tx_bufsize = readl(&buf_ctrl->tx_bufsize);
		if (tx_put >= tx_get)
			char_count = tx_put - tx_get;
		else
			char_count = tx_put - tx_get + tx_bufsize;
#ifdef CY_DEBUG_IO
		printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n",
			info->line, info->xmit_cnt + char_count);
#endif
		return info->xmit_cnt + char_count;
	}
#endif				/* Z_EXT_CHARS_IN_BUFFER */
}				/* cy_chars_in_buffer */

/*
 * ------------------------------------------------------------
 * cy_ioctl() and friends
 * ------------------------------------------------------------
 */

static void cyy_baud_calc(struct cyclades_port *info, __u32 baud)
{
	int co, co_val, bpr;
	__u32 cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 :
			25000000);

	if (baud == 0) {
		info->tbpr = info->tco = info->rbpr = info->rco = 0;
		return;
	}

	/* determine which prescaler to use */
	for (co = 4, co_val = 2048; co; co--, co_val >>= 2) {
		if (cy_clock / co_val / baud > 63)
			break;
	}

	bpr = (cy_clock / co_val * 2 / baud + 1) / 2;
	if (bpr > 255)
		bpr = 255;

	info->tbpr = info->rbpr = bpr;
	info->tco = info->rco = co;
}

/*
 * This routine finds or computes the various line characteristics.
 * It used to be called config_setup
 */
static void cy_set_line_char(struct cyclades_port *info, struct tty_struct *tty)
{
	struct cyclades_card *card;
	unsigned long flags;
	int channel;
	unsigned cflag, iflag;
	int baud, baud_rate = 0;
	int i;

	if (!tty->termios) /* XXX can this happen at all? */
		return;

	if (info->line == -1)
		return;

	cflag = tty->termios->c_cflag;
	iflag = tty->termios->c_iflag;

	/*
	 * Set up the tty->alt_speed kludge
	 */
	if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
		tty->alt_speed = 57600;
	if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
		tty->alt_speed = 115200;
	if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
		tty->alt_speed = 230400;
	if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
		tty->alt_speed = 460800;

	card = info->card;
	channel = info->line - card->first_line;

	if (!cy_is_Z(card)) {
		u32 cflags;

		/* baud rate */
		baud = tty_get_baud_rate(tty);
		if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
				ASYNC_SPD_CUST) {
			if (info->custom_divisor)
				baud_rate = info->baud / info->custom_divisor;
			else
				baud_rate = info->baud;
		} else if (baud > CD1400_MAX_SPEED) {
			baud = CD1400_MAX_SPEED;
		}
		/* find the baud index */
		for (i = 0; i < 20; i++) {
			if (baud == baud_table[i])
				break;
		}
		if (i == 20)
			i = 19;	/* CD1400_MAX_SPEED */

		if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
				ASYNC_SPD_CUST) {
			cyy_baud_calc(info, baud_rate);
		} else {
			if (info->chip_rev >= CD1400_REV_J) {
				/* It is a CD1400 rev. J or later */
				info->tbpr = baud_bpr_60[i];	/* Tx BPR */
				info->tco = baud_co_60[i];	/* Tx CO */
				info->rbpr = baud_bpr_60[i];	/* Rx BPR */
				info->rco = baud_co_60[i];	/* Rx CO */
			} else {
				info->tbpr = baud_bpr_25[i];	/* Tx BPR */
				info->tco = baud_co_25[i];	/* Tx CO */
				info->rbpr = baud_bpr_25[i];	/* Rx BPR */
				info->rco = baud_co_25[i];	/* Rx CO */
			}
		}
		if (baud_table[i] == 134) {
			/* get it right for 134.5 baud */
			info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) +
					2;
		} else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
				ASYNC_SPD_CUST) {
			info->timeout = (info->xmit_fifo_size * HZ * 15 /
					baud_rate) + 2;
		} else if (baud_table[i]) {
			info->timeout = (info->xmit_fifo_size * HZ * 15 /
					baud_table[i]) + 2;
			/* this needs to be propagated into the card info */
		} else {
			info->timeout = 0;
		}
		/* By tradition (is it a standard?) a baud rate of zero
		   implies the line should be/has been closed.  A bit
		   later in this routine such a test is performed. */

		/* byte size and parity */
		info->cor5 = 0;
		info->cor4 = 0;
		/* receive threshold */
		info->cor3 = (info->default_threshold ?
				info->default_threshold : baud_cor3[i]);
		info->cor2 = CyETC;
		switch (cflag & CSIZE) {
		case CS5:
			info->cor1 = Cy_5_BITS;
			break;
		case CS6:
			info->cor1 = Cy_6_BITS;
			break;
		case CS7:
			info->cor1 = Cy_7_BITS;
			break;
		case CS8:
			info->cor1 = Cy_8_BITS;
			break;
		}
		if (cflag & CSTOPB)
			info->cor1 |= Cy_2_STOP;

		if (cflag & PARENB) {
			if (cflag & PARODD)
				info->cor1 |= CyPARITY_O;
			else
				info->cor1 |= CyPARITY_E;
		} else
			info->cor1 |= CyPARITY_NONE;

		/* CTS flow control flag */
		if (cflag & CRTSCTS) {
			info->port.flags |= ASYNC_CTS_FLOW;
			info->cor2 |= CyCtsAE;
		} else {
			info->port.flags &= ~ASYNC_CTS_FLOW;
			info->cor2 &= ~CyCtsAE;
		}
		if (cflag & CLOCAL)
			info->port.flags &= ~ASYNC_CHECK_CD;
		else
			info->port.flags |= ASYNC_CHECK_CD;

	 /***********************************************
	    The hardware option, CyRtsAO, presents RTS when
	    the chip has characters to send.  Since most modems
	    use RTS as reverse (inbound) flow control, this
	    option is not used.  If inbound flow control is
	    necessary, DTR can be programmed to provide the
	    appropriate signals for use with a non-standard
	    cable.  Contact Marcio Saito for details.
	 ***********************************************/

		channel &= 0x03;

		spin_lock_irqsave(&card->card_lock, flags);
		cyy_writeb(info, CyCAR, channel);

		/* tx and rx baud rate */

		cyy_writeb(info, CyTCOR, info->tco);
		cyy_writeb(info, CyTBPR, info->tbpr);
		cyy_writeb(info, CyRCOR, info->rco);
		cyy_writeb(info, CyRBPR, info->rbpr);

		/* set line characteristics  according configuration */

		cyy_writeb(info, CySCHR1, START_CHAR(tty));
		cyy_writeb(info, CySCHR2, STOP_CHAR(tty));
		cyy_writeb(info, CyCOR1, info->cor1);
		cyy_writeb(info, CyCOR2, info->cor2);
		cyy_writeb(info, CyCOR3, info->cor3);
		cyy_writeb(info, CyCOR4, info->cor4);
		cyy_writeb(info, CyCOR5, info->cor5);

		cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch |
				CyCOR3ch);

		/* !!! Is this needed? */
		cyy_writeb(info, CyCAR, channel);
		cyy_writeb(info, CyRTPR,
			(info->default_timeout ? info->default_timeout : 0x02));
		/* 10ms rx timeout */

		cflags = CyCTS;
		if (!C_CLOCAL(tty))
			cflags |= CyDSR | CyRI | CyDCD;
		/* without modem intr */
		cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyMdmCh);
		/* act on 1->0 modem transitions */
		if ((cflag & CRTSCTS) && info->rflow)
			cyy_writeb(info, CyMCOR1, cflags | rflow_thr[i]);
		else
			cyy_writeb(info, CyMCOR1, cflags);
		/* act on 0->1 modem transitions */
		cyy_writeb(info, CyMCOR2, cflags);

		if (i == 0)	/* baud rate is zero, turn off line */
			cyy_change_rts_dtr(info, 0, TIOCM_DTR);
		else
			cyy_change_rts_dtr(info, TIOCM_DTR, 0);

		clear_bit(TTY_IO_ERROR, &tty->flags);
		spin_unlock_irqrestore(&card->card_lock, flags);

	} else {
		struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
		__u32 sw_flow;
		int retval;

		if (!cyz_is_loaded(card))
			return;

		/* baud rate */
		baud = tty_get_baud_rate(tty);
		if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
				ASYNC_SPD_CUST) {
			if (info->custom_divisor)
				baud_rate = info->baud / info->custom_divisor;
			else
				baud_rate = info->baud;
		} else if (baud > CYZ_MAX_SPEED) {
			baud = CYZ_MAX_SPEED;
		}
		cy_writel(&ch_ctrl->comm_baud, baud);

		if (baud == 134) {
			/* get it right for 134.5 baud */
			info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) +
					2;
		} else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
				ASYNC_SPD_CUST) {
			info->timeout = (info->xmit_fifo_size * HZ * 15 /
					baud_rate) + 2;
		} else if (baud) {
			info->timeout = (info->xmit_fifo_size * HZ * 15 /
					baud) + 2;
			/* this needs to be propagated into the card info */
		} else {
			info->timeout = 0;
		}

		/* byte size and parity */
		switch (cflag & CSIZE) {
		case CS5:
			cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5);
			break;
		case CS6:
			cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6);
			break;
		case CS7:
			cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7);
			break;
		case CS8:
			cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8);
			break;
		}
		if (cflag & CSTOPB) {
			cy_writel(&ch_ctrl->comm_data_l,
				  readl(&ch_ctrl->comm_data_l) | C_DL_2STOP);
		} else {
			cy_writel(&ch_ctrl->comm_data_l,
				  readl(&ch_ctrl->comm_data_l) | C_DL_1STOP);
		}
		if (cflag & PARENB) {
			if (cflag & PARODD)
				cy_writel(&ch_ctrl->comm_parity, C_PR_ODD);
			else
				cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN);
		} else
			cy_writel(&ch_ctrl->comm_parity, C_PR_NONE);

		/* CTS flow control flag */
		if (cflag & CRTSCTS) {
			cy_writel(&ch_ctrl->hw_flow,
				readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS);
		} else {
			cy_writel(&ch_ctrl->hw_flow, readl(&ch_ctrl->hw_flow) &
					~(C_RS_CTS | C_RS_RTS));
		}
		/* As the HW flow control is done in firmware, the driver
		   doesn't need to care about it */
		info->port.flags &= ~ASYNC_CTS_FLOW;

		/* XON/XOFF/XANY flow control flags */
		sw_flow = 0;
		if (iflag & IXON) {
			sw_flow |= C_FL_OXX;
			if (iflag & IXANY)
				sw_flow |= C_FL_OIXANY;
		}
		cy_writel(&ch_ctrl->sw_flow, sw_flow);

		retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L);
		if (retval != 0) {
			printk(KERN_ERR "cyc:set_line_char retval on ttyC%d "
				"was %x\n", info->line, retval);
		}

		/* CD sensitivity */
		if (cflag & CLOCAL)
			info->port.flags &= ~ASYNC_CHECK_CD;
		else
			info->port.flags |= ASYNC_CHECK_CD;

		if (baud == 0) {	/* baud rate is zero, turn off line */
			cy_writel(&ch_ctrl->rs_control,
				  readl(&ch_ctrl->rs_control) & ~C_RS_DTR);
#ifdef CY_DEBUG_DTR
			printk(KERN_DEBUG "cyc:set_line_char dropping Z DTR\n");
#endif
		} else {
			cy_writel(&ch_ctrl->rs_control,
				  readl(&ch_ctrl->rs_control) | C_RS_DTR);
#ifdef CY_DEBUG_DTR
			printk(KERN_DEBUG "cyc:set_line_char raising Z DTR\n");
#endif
		}

		retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L);
		if (retval != 0) {
			printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d "
				"was %x\n", info->line, retval);
		}

		clear_bit(TTY_IO_ERROR, &tty->flags);
	}
}				/* set_line_char */

static int cy_get_serial_info(struct cyclades_port *info,
		struct serial_struct __user *retinfo)
{
	struct cyclades_card *cinfo = info->card;
	struct serial_struct tmp = {
		.type = info->type,
		.line = info->line,
		.port = (info->card - cy_card) * 0x100 + info->line -
			cinfo->first_line,
		.irq = cinfo->irq,
		.flags = info->port.flags,
		.close_delay = info->port.close_delay,
		.closing_wait = info->port.closing_wait,
		.baud_base = info->baud,
		.custom_divisor = info->custom_divisor,
		.hub6 = 0,		/*!!! */
	};
	return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0;
}

static int
cy_set_serial_info(struct cyclades_port *info, struct tty_struct *tty,
		struct serial_struct __user *new_info)
{
	struct serial_struct new_serial;
	int ret;

	if (copy_from_user(&new_serial, new_info, sizeof(new_serial)))
		return -EFAULT;

	mutex_lock(&info->port.mutex);
	if (!capable(CAP_SYS_ADMIN)) {
		if (new_serial.close_delay != info->port.close_delay ||
				new_serial.baud_base != info->baud ||
				(new_serial.flags & ASYNC_FLAGS &
					~ASYNC_USR_MASK) !=
				(info->port.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK))
		{
			mutex_unlock(&info->port.mutex);
			return -EPERM;
		}
		info->port.flags = (info->port.flags & ~ASYNC_USR_MASK) |
				(new_serial.flags & ASYNC_USR_MASK);
		info->baud = new_serial.baud_base;
		info->custom_divisor = new_serial.custom_divisor;
		goto check_and_exit;
	}

	/*
	 * OK, past this point, all the error checking has been done.
	 * At this point, we start making changes.....
	 */

	info->baud = new_serial.baud_base;
	info->custom_divisor = new_serial.custom_divisor;
	info->port.flags = (info->port.flags & ~ASYNC_FLAGS) |
			(new_serial.flags & ASYNC_FLAGS);
	info->port.close_delay = new_serial.close_delay * HZ / 100;
	info->port.closing_wait = new_serial.closing_wait * HZ / 100;

check_and_exit:
	if (info->port.flags & ASYNC_INITIALIZED) {
		cy_set_line_char(info, tty);
		ret = 0;
	} else {
		ret = cy_startup(info, tty);
	}
	mutex_unlock(&info->port.mutex);
	return ret;
}				/* set_serial_info */

/*
 * get_lsr_info - get line status register info
 *
 * Purpose: Let user call ioctl() to get info when the UART physically
 *	    is emptied.  On bus types like RS485, the transmitter must
 *	    release the bus after transmitting. This must be done when
 *	    the transmit shift register is empty, not be done when the
 *	    transmit holding register is empty.  This functionality
 *	    allows an RS485 driver to be written in user space.
 */
static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value)
{
	struct cyclades_card *card = info->card;
	unsigned int result;
	unsigned long flags;
	u8 status;

	if (!cy_is_Z(card)) {
		spin_lock_irqsave(&card->card_lock, flags);
		status = cyy_readb(info, CySRER) & (CyTxRdy | CyTxMpty);
		spin_unlock_irqrestore(&card->card_lock, flags);
		result = (status ? 0 : TIOCSER_TEMT);
	} else {
		/* Not supported yet */
		return -EINVAL;
	}
	return put_user(result, (unsigned long __user *)value);
}

static int cy_tiocmget(struct tty_struct *tty)
{
	struct cyclades_port *info = tty->driver_data;
	struct cyclades_card *card;
	int result;

	if (serial_paranoia_check(info, tty->name, __func__))
		return -ENODEV;

	card = info->card;

	if (!cy_is_Z(card)) {
		unsigned long flags;
		int channel = info->line - card->first_line;
		u8 status;

		spin_lock_irqsave(&card->card_lock, flags);
		cyy_writeb(info, CyCAR, channel & 0x03);
		status = cyy_readb(info, CyMSVR1);
		status |= cyy_readb(info, CyMSVR2);
		spin_unlock_irqrestore(&card->card_lock, flags);

		if (info->rtsdtr_inv) {
			result = ((status & CyRTS) ? TIOCM_DTR : 0) |
				((status & CyDTR) ? TIOCM_RTS : 0);
		} else {
			result = ((status & CyRTS) ? TIOCM_RTS : 0) |
				((status & CyDTR) ? TIOCM_DTR : 0);
		}
		result |= ((status & CyDCD) ? TIOCM_CAR : 0) |
			((status & CyRI) ? TIOCM_RNG : 0) |
			((status & CyDSR) ? TIOCM_DSR : 0) |
			((status & CyCTS) ? TIOCM_CTS : 0);
	} else {
		u32 lstatus;

		if (!cyz_is_loaded(card)) {
			result = -ENODEV;
			goto end;
		}

		lstatus = readl(&info->u.cyz.ch_ctrl->rs_status);
		result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) |
			((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) |
			((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) |
			((lstatus & C_RS_RI) ? TIOCM_RNG : 0) |
			((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) |
			((lstatus & C_RS_CTS) ? TIOCM_CTS : 0);
	}
end:
	return result;
}				/* cy_tiomget */

static int
cy_tiocmset(struct tty_struct *tty,
		unsigned int set, unsigned int clear)
{
	struct cyclades_port *info = tty->driver_data;
	struct cyclades_card *card;
	unsigned long flags;

	if (serial_paranoia_check(info, tty->name, __func__))
		return -ENODEV;

	card = info->card;
	if (!cy_is_Z(card)) {
		spin_lock_irqsave(&card->card_lock, flags);
		cyy_change_rts_dtr(info, set, clear);
		spin_unlock_irqrestore(&card->card_lock, flags);
	} else {
		struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
		int retval, channel = info->line - card->first_line;
		u32 rs;

		if (!cyz_is_loaded(card))
			return -ENODEV;

		spin_lock_irqsave(&card->card_lock, flags);
		rs = readl(&ch_ctrl->rs_control);
		if (set & TIOCM_RTS)
			rs |= C_RS_RTS;
		if (clear & TIOCM_RTS)
			rs &= ~C_RS_RTS;
		if (set & TIOCM_DTR) {
			rs |= C_RS_DTR;
#ifdef CY_DEBUG_DTR
			printk(KERN_DEBUG "cyc:set_modem_info raising Z DTR\n");
#endif
		}
		if (clear & TIOCM_DTR) {
			rs &= ~C_RS_DTR;
#ifdef CY_DEBUG_DTR
			printk(KERN_DEBUG "cyc:set_modem_info clearing "
				"Z DTR\n");
#endif
		}
		cy_writel(&ch_ctrl->rs_control, rs);
		retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L);
		spin_unlock_irqrestore(&card->card_lock, flags);
		if (retval != 0) {
			printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d "
				"was %x\n", info->line, retval);
		}
	}
	return 0;
}

/*
 * cy_break() --- routine which turns the break handling on or off
 */
static int cy_break(struct tty_struct *tty, int break_state)
{
	struct cyclades_port *info = tty->driver_data;
	struct cyclades_card *card;
	unsigned long flags;
	int retval = 0;

	if (serial_paranoia_check(info, tty->name, "cy_break"))
		return -EINVAL;

	card = info->card;

	spin_lock_irqsave(&card->card_lock, flags);
	if (!cy_is_Z(card)) {
		/* Let the transmit ISR take care of this (since it
		   requires stuffing characters into the output stream).
		 */
		if (break_state == -1) {
			if (!info->breakon) {
				info->breakon = 1;
				if (!info->xmit_cnt) {
					spin_unlock_irqrestore(&card->card_lock, flags);
					start_xmit(info);
					spin_lock_irqsave(&card->card_lock, flags);
				}
			}
		} else {
			if (!info->breakoff) {
				info->breakoff = 1;
				if (!info->xmit_cnt) {
					spin_unlock_irqrestore(&card->card_lock, flags);
					start_xmit(info);
					spin_lock_irqsave(&card->card_lock, flags);
				}
			}
		}
	} else {
		if (break_state == -1) {
			retval = cyz_issue_cmd(card,
				info->line - card->first_line,
				C_CM_SET_BREAK, 0L);
			if (retval != 0) {
				printk(KERN_ERR "cyc:cy_break (set) retval on "
					"ttyC%d was %x\n", info->line, retval);
			}
		} else {
			retval = cyz_issue_cmd(card,
				info->line - card->first_line,
				C_CM_CLR_BREAK, 0L);
			if (retval != 0) {
				printk(KERN_DEBUG "cyc:cy_break (clr) retval "
					"on ttyC%d was %x\n", info->line,
					retval);
			}
		}
	}
	spin_unlock_irqrestore(&card->card_lock, flags);
	return retval;
}				/* cy_break */

static int set_threshold(struct cyclades_port *info, unsigned long value)
{
	struct cyclades_card *card = info->card;
	unsigned long flags;

	if (!cy_is_Z(card)) {
		info->cor3 &= ~CyREC_FIFO;
		info->cor3 |= value & CyREC_FIFO;

		spin_lock_irqsave(&card->card_lock, flags);
		cyy_writeb(info, CyCOR3, info->cor3);
		cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR3ch);
		spin_unlock_irqrestore(&card->card_lock, flags);
	}
	return 0;
}				/* set_threshold */

static int get_threshold(struct cyclades_port *info,
						unsigned long __user *value)
{
	struct cyclades_card *card = info->card;

	if (!cy_is_Z(card)) {
		u8 tmp = cyy_readb(info, CyCOR3) & CyREC_FIFO;
		return put_user(tmp, value);
	}
	return 0;
}				/* get_threshold */

static int set_timeout(struct cyclades_port *info, unsigned long value)
{
	struct cyclades_card *card = info->card;
	unsigned long flags;

	if (!cy_is_Z(card)) {
		spin_lock_irqsave(&card->card_lock, flags);
		cyy_writeb(info, CyRTPR, value & 0xff);
		spin_unlock_irqrestore(&card->card_lock, flags);
	}
	return 0;
}				/* set_timeout */

static int get_timeout(struct cyclades_port *info,
						unsigned long __user *value)
{
	struct cyclades_card *card = info->card;

	if (!cy_is_Z(card)) {
		u8 tmp = cyy_readb(info, CyRTPR);
		return put_user(tmp, value);
	}
	return 0;
}				/* get_timeout */

static int cy_cflags_changed(struct cyclades_port *info, unsigned long arg,
		struct cyclades_icount *cprev)
{
	struct cyclades_icount cnow;
	unsigned long flags;
	int ret;

	spin_lock_irqsave(&info->card->card_lock, flags);
	cnow = info->icount;	/* atomic copy */
	spin_unlock_irqrestore(&info->card->card_lock, flags);

	ret =	((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));

	*cprev = cnow;

	return ret;
}

/*
 * This routine allows the tty driver to implement device-
 * specific ioctl's.  If the ioctl number passed in cmd is
 * not recognized by the driver, it should return ENOIOCTLCMD.
 */
static int
cy_ioctl(struct tty_struct *tty,
	 unsigned int cmd, unsigned long arg)
{
	struct cyclades_port *info = tty->driver_data;
	struct cyclades_icount cnow;	/* kernel counter temps */
	int ret_val = 0;
	unsigned long flags;
	void __user *argp = (void __user *)arg;

	if (serial_paranoia_check(info, tty->name, "cy_ioctl"))
		return -ENODEV;

#ifdef CY_DEBUG_OTHER
	printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n",
		info->line, cmd, arg);
#endif

	switch (cmd) {
	case CYGETMON:
		if (copy_to_user(argp, &info->mon, sizeof(info->mon))) {
			ret_val = -EFAULT;
			break;
		}
		memset(&info->mon, 0, sizeof(info->mon));
		break;
	case CYGETTHRESH:
		ret_val = get_threshold(info, argp);
		break;
	case CYSETTHRESH:
		ret_val = set_threshold(info, arg);
		break;
	case CYGETDEFTHRESH:
		ret_val = put_user(info->default_threshold,
				(unsigned long __user *)argp);
		break;
	case CYSETDEFTHRESH:
		info->default_threshold = arg & 0x0f;
		break;
	case CYGETTIMEOUT:
		ret_val = get_timeout(info, argp);
		break;
	case CYSETTIMEOUT:
		ret_val = set_timeout(info, arg);
		break;
	case CYGETDEFTIMEOUT:
		ret_val = put_user(info->default_timeout,
				(unsigned long __user *)argp);
		break;
	case CYSETDEFTIMEOUT:
		info->default_timeout = arg & 0xff;
		break;
	case CYSETRFLOW:
		info->rflow = (int)arg;
		break;
	case CYGETRFLOW:
		ret_val = info->rflow;
		break;
	case CYSETRTSDTR_INV:
		info->rtsdtr_inv = (int)arg;
		break;
	case CYGETRTSDTR_INV:
		ret_val = info->rtsdtr_inv;
		break;
	case CYGETCD1400VER:
		ret_val = info->chip_rev;
		break;
#ifndef CONFIG_CYZ_INTR
	case CYZSETPOLLCYCLE:
		cyz_polling_cycle = (arg * HZ) / 1000;
		break;
	case CYZGETPOLLCYCLE:
		ret_val = (cyz_polling_cycle * 1000) / HZ;
		break;
#endif				/* CONFIG_CYZ_INTR */
	case CYSETWAIT:
		info->port.closing_wait = (unsigned short)arg * HZ / 100;
		break;
	case CYGETWAIT:
		ret_val = info->port.closing_wait / (HZ / 100);
		break;
	case TIOCGSERIAL:
		ret_val = cy_get_serial_info(info, argp);
		break;
	case TIOCSSERIAL:
		ret_val = cy_set_serial_info(info, tty, argp);
		break;
	case TIOCSERGETLSR:	/* Get line status register */
		ret_val = get_lsr_info(info, argp);
		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:
		spin_lock_irqsave(&info->card->card_lock, flags);
		/* note the counters on entry */
		cnow = info->icount;
		spin_unlock_irqrestore(&info->card->card_lock, flags);
		ret_val = wait_event_interruptible(info->port.delta_msr_wait,
				cy_cflags_changed(info, arg, &cnow));
		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.
		 */
	default:
		ret_val = -ENOIOCTLCMD;
	}

#ifdef CY_DEBUG_OTHER
	printk(KERN_DEBUG "cyc:cy_ioctl done\n");
#endif
	return ret_val;
}				/* cy_ioctl */

static int cy_get_icount(struct tty_struct *tty,
				struct serial_icounter_struct *sic)
{
	struct cyclades_port *info = tty->driver_data;
	struct cyclades_icount cnow;	/* Used to snapshot */
	unsigned long flags;

	spin_lock_irqsave(&info->card->card_lock, flags);
	cnow = info->icount;
	spin_unlock_irqrestore(&info->card->card_lock, flags);

	sic->cts = cnow.cts;
	sic->dsr = cnow.dsr;
	sic->rng = cnow.rng;
	sic->dcd = cnow.dcd;
	sic->rx = cnow.rx;
	sic->tx = cnow.tx;
	sic->frame = cnow.frame;
	sic->overrun = cnow.overrun;
	sic->parity = cnow.parity;
	sic->brk = cnow.brk;
	sic->buf_overrun = cnow.buf_overrun;
	return 0;
}

/*
 * This routine allows the tty driver to be notified when
 * device's termios settings have changed.  Note that a
 * well-designed tty driver should be prepared to accept the case
 * where old == NULL, and try to do something rational.
 */
static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
{
	struct cyclades_port *info = tty->driver_data;

#ifdef CY_DEBUG_OTHER
	printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line);
#endif

	cy_set_line_char(info, tty);

	if ((old_termios->c_cflag & CRTSCTS) &&
			!(tty->termios->c_cflag & CRTSCTS)) {
		tty->hw_stopped = 0;
		cy_start(tty);
	}
#if 0
	/*
	 * No need to wake up processes in open wait, since they
	 * sample the CLOCAL flag once, and don't recheck it.
	 * XXX  It's not clear whether the current behavior is correct
	 * or not.  Hence, this may change.....
	 */
	if (!(old_termios->c_cflag & CLOCAL) &&
	    (tty->termios->c_cflag & CLOCAL))
		wake_up_interruptible(&info->port.open_wait);
#endif
}				/* cy_set_termios */

/* This function is used to send a high-priority XON/XOFF character to
   the device.
*/
static void cy_send_xchar(struct tty_struct *tty, char ch)
{
	struct cyclades_port *info = tty->driver_data;
	struct cyclades_card *card;
	int channel;

	if (serial_paranoia_check(info, tty->name, "cy_send_xchar"))
		return;

	info->x_char = ch;

	if (ch)
		cy_start(tty);

	card = info->card;
	channel = info->line - card->first_line;

	if (cy_is_Z(card)) {
		if (ch == STOP_CHAR(tty))
			cyz_issue_cmd(card, channel, C_CM_SENDXOFF, 0L);
		else if (ch == START_CHAR(tty))
			cyz_issue_cmd(card, channel, C_CM_SENDXON, 0L);
	}
}

/* This routine is called by the upper-layer tty layer to signal
   that incoming characters should be throttled because the input
   buffers are close to full.
 */
static void cy_throttle(struct tty_struct *tty)
{
	struct cyclades_port *info = tty->driver_data;
	struct cyclades_card *card;
	unsigned long flags;

#ifdef CY_DEBUG_THROTTLE
	char buf[64];

	printk(KERN_DEBUG "cyc:throttle %s: %ld...ttyC%d\n", tty_name(tty, buf),
			tty->ldisc.chars_in_buffer(tty), info->line);
#endif

	if (serial_paranoia_check(info, tty->name, "cy_throttle"))
		return;

	card = info->card;

	if (I_IXOFF(tty)) {
		if (!cy_is_Z(card))
			cy_send_xchar(tty, STOP_CHAR(tty));
		else
			info->throttle = 1;
	}

	if (tty->termios->c_cflag & CRTSCTS) {
		if (!cy_is_Z(card)) {
			spin_lock_irqsave(&card->card_lock, flags);
			cyy_change_rts_dtr(info, 0, TIOCM_RTS);
			spin_unlock_irqrestore(&card->card_lock, flags);
		} else {
			info->throttle = 1;
		}
	}
}				/* cy_throttle */

/*
 * This routine notifies the tty driver that it should signal
 * that characters can now be sent to the tty without fear of
 * overrunning the input buffers of the line disciplines.
 */
static void cy_unthrottle(struct tty_struct *tty)
{
	struct cyclades_port *info = tty->driver_data;
	struct cyclades_card *card;
	unsigned long flags;

#ifdef CY_DEBUG_THROTTLE
	char buf[64];

	printk(KERN_DEBUG "cyc:unthrottle %s: %ld...ttyC%d\n",
		tty_name(tty, buf), tty_chars_in_buffer(tty), info->line);
#endif

	if (serial_paranoia_check(info, tty->name, "cy_unthrottle"))
		return;

	if (I_IXOFF(tty)) {
		if (info->x_char)
			info->x_char = 0;
		else
			cy_send_xchar(tty, START_CHAR(tty));
	}

	if (tty->termios->c_cflag & CRTSCTS) {
		card = info->card;
		if (!cy_is_Z(card)) {
			spin_lock_irqsave(&card->card_lock, flags);
			cyy_change_rts_dtr(info, TIOCM_RTS, 0);
			spin_unlock_irqrestore(&card->card_lock, flags);
		} else {
			info->throttle = 0;
		}
	}
}				/* cy_unthrottle */

/* cy_start and cy_stop provide software output flow control as a
   function of XON/XOFF, software CTS, and other such stuff.
*/
static void cy_stop(struct tty_struct *tty)
{
	struct cyclades_card *cinfo;
	struct cyclades_port *info = tty->driver_data;
	int channel;
	unsigned long flags;

#ifdef CY_DEBUG_OTHER
	printk(KERN_DEBUG "cyc:cy_stop ttyC%d\n", info->line);
#endif

	if (serial_paranoia_check(info, tty->name, "cy_stop"))
		return;

	cinfo = info->card;
	channel = info->line - cinfo->first_line;
	if (!cy_is_Z(cinfo)) {
		spin_lock_irqsave(&cinfo->card_lock, flags);
		cyy_writeb(info, CyCAR, channel & 0x03);
		cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy);
		spin_unlock_irqrestore(&cinfo->card_lock, flags);
	}
}				/* cy_stop */

static void cy_start(struct tty_struct *tty)
{
	struct cyclades_card *cinfo;
	struct cyclades_port *info = tty->driver_data;
	int channel;
	unsigned long flags;

#ifdef CY_DEBUG_OTHER
	printk(KERN_DEBUG "cyc:cy_start ttyC%d\n", info->line);
#endif

	if (serial_paranoia_check(info, tty->name, "cy_start"))
		return;

	cinfo = info->card;
	channel = info->line - cinfo->first_line;
	if (!cy_is_Z(cinfo)) {
		spin_lock_irqsave(&cinfo->card_lock, flags);
		cyy_writeb(info, CyCAR, channel & 0x03);
		cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy);
		spin_unlock_irqrestore(&cinfo->card_lock, flags);
	}
}				/* cy_start */

/*
 * cy_hangup() --- called by tty_hangup() when a hangup is signaled.
 */
static void cy_hangup(struct tty_struct *tty)
{
	struct cyclades_port *info = tty->driver_data;

#ifdef CY_DEBUG_OTHER
	printk(KERN_DEBUG "cyc:cy_hangup ttyC%d\n", info->line);
#endif

	if (serial_paranoia_check(info, tty->name, "cy_hangup"))
		return;

	cy_flush_buffer(tty);
	cy_shutdown(info, tty);
	tty_port_hangup(&info->port);
}				/* cy_hangup */

static int cyy_carrier_raised(struct tty_port *port)
{
	struct cyclades_port *info = container_of(port, struct cyclades_port,
			port);
	struct cyclades_card *cinfo = info->card;
	unsigned long flags;
	int channel = info->line - cinfo->first_line;
	u32 cd;

	spin_lock_irqsave(&cinfo->card_lock, flags);
	cyy_writeb(info, CyCAR, channel & 0x03);
	cd = cyy_readb(info, CyMSVR1) & CyDCD;
	spin_unlock_irqrestore(&cinfo->card_lock, flags);

	return cd;
}

static void cyy_dtr_rts(struct tty_port *port, int raise)
{
	struct cyclades_port *info = container_of(port, struct cyclades_port,
			port);
	struct cyclades_card *cinfo = info->card;
	unsigned long flags;

	spin_lock_irqsave(&cinfo->card_lock, flags);
	cyy_change_rts_dtr(info, raise ? TIOCM_RTS | TIOCM_DTR : 0,
			raise ? 0 : TIOCM_RTS | TIOCM_DTR);
	spin_unlock_irqrestore(&cinfo->card_lock, flags);
}

static int cyz_carrier_raised(struct tty_port *port)
{
	struct cyclades_port *info = container_of(port, struct cyclades_port,
			port);

	return readl(&info->u.cyz.ch_ctrl->rs_status) & C_RS_DCD;
}

static void cyz_dtr_rts(struct tty_port *port, int raise)
{
	struct cyclades_port *info = container_of(port, struct cyclades_port,
			port);
	struct cyclades_card *cinfo = info->card;
	struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
	int ret, channel = info->line - cinfo->first_line;
	u32 rs;

	rs = readl(&ch_ctrl->rs_control);
	if (raise)
		rs |= C_RS_RTS | C_RS_DTR;
	else
		rs &= ~(C_RS_RTS | C_RS_DTR);
	cy_writel(&ch_ctrl->rs_control, rs);
	ret = cyz_issue_cmd(cinfo, channel, C_CM_IOCTLM, 0L);
	if (ret != 0)
		printk(KERN_ERR "%s: retval on ttyC%d was %x\n",
				__func__, info->line, ret);
#ifdef CY_DEBUG_DTR
	printk(KERN_DEBUG "%s: raising Z DTR\n", __func__);
#endif
}

static const struct tty_port_operations cyy_port_ops = {
	.carrier_raised = cyy_carrier_raised,
	.dtr_rts = cyy_dtr_rts,
	.shutdown = cy_do_close,
};

static const struct tty_port_operations cyz_port_ops = {
	.carrier_raised = cyz_carrier_raised,
	.dtr_rts = cyz_dtr_rts,
	.shutdown = cy_do_close,
};

/*
 * ---------------------------------------------------------------------
 * cy_init() and friends
 *
 * cy_init() is called at boot-time to initialize the serial driver.
 * ---------------------------------------------------------------------
 */

static int __devinit cy_init_card(struct cyclades_card *cinfo)
{
	struct cyclades_port *info;
	unsigned int channel, port;

	spin_lock_init(&cinfo->card_lock);
	cinfo->intr_enabled = 0;

	cinfo->ports = kcalloc(cinfo->nports, sizeof(*cinfo->ports),
			GFP_KERNEL);
	if (cinfo->ports == NULL) {
		printk(KERN_ERR "Cyclades: cannot allocate ports\n");
		return -ENOMEM;
	}

	for (channel = 0, port = cinfo->first_line; channel < cinfo->nports;
			channel++, port++) {
		info = &cinfo->ports[channel];
		tty_port_init(&info->port);
		info->magic = CYCLADES_MAGIC;
		info->card = cinfo;
		info->line = port;

		info->port.closing_wait = CLOSING_WAIT_DELAY;
		info->port.close_delay = 5 * HZ / 10;
		info->port.flags = STD_COM_FLAGS;
		init_completion(&info->shutdown_wait);

		if (cy_is_Z(cinfo)) {
			struct FIRM_ID *firm_id = cinfo->base_addr + ID_ADDRESS;
			struct ZFW_CTRL *zfw_ctrl;

			info->port.ops = &cyz_port_ops;
			info->type = PORT_STARTECH;

			zfw_ctrl = cinfo->base_addr +
				(readl(&firm_id->zfwctrl_addr) & 0xfffff);
			info->u.cyz.ch_ctrl = &zfw_ctrl->ch_ctrl[channel];
			info->u.cyz.buf_ctrl = &zfw_ctrl->buf_ctrl[channel];

			if (cinfo->hw_ver == ZO_V1)
				info->xmit_fifo_size = CYZ_FIFO_SIZE;
			else
				info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE;
#ifdef CONFIG_CYZ_INTR
			setup_timer(&cyz_rx_full_timer[port],
				cyz_rx_restart, (unsigned long)info);
#endif
		} else {
			unsigned short chip_number;
			int index = cinfo->bus_index;

			info->port.ops = &cyy_port_ops;
			info->type = PORT_CIRRUS;
			info->xmit_fifo_size = CyMAX_CHAR_FIFO;
			info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS;
			info->cor2 = CyETC;
			info->cor3 = 0x08;	/* _very_ small rcv threshold */

			chip_number = channel / CyPORTS_PER_CHIP;
			info->u.cyy.base_addr = cinfo->base_addr +
				(cy_chip_offset[chip_number] << index);
			info->chip_rev = cyy_readb(info, CyGFRCR);

			if (info->chip_rev >= CD1400_REV_J) {
				/* It is a CD1400 rev. J or later */
				info->tbpr = baud_bpr_60[13];	/* Tx BPR */
				info->tco = baud_co_60[13];	/* Tx CO */
				info->rbpr = baud_bpr_60[13];	/* Rx BPR */
				info->rco = baud_co_60[13];	/* Rx CO */
				info->rtsdtr_inv = 1;
			} else {
				info->tbpr = baud_bpr_25[13];	/* Tx BPR */
				info->tco = baud_co_25[13];	/* Tx CO */
				info->rbpr = baud_bpr_25[13];	/* Rx BPR */
				info->rco = baud_co_25[13];	/* Rx CO */
				info->rtsdtr_inv = 0;
			}
			info->read_status_mask = CyTIMEOUT | CySPECHAR |
				CyBREAK | CyPARITY | CyFRAME | CyOVERRUN;
		}

	}

#ifndef CONFIG_CYZ_INTR
	if (cy_is_Z(cinfo) && !timer_pending(&cyz_timerlist)) {
		mod_timer(&cyz_timerlist, jiffies + 1);
#ifdef CY_PCI_DEBUG
		printk(KERN_DEBUG "Cyclades-Z polling initialized\n");
#endif
	}
#endif
	return 0;
}

/* initialize chips on Cyclom-Y card -- return number of valid
   chips (which is number of ports/4) */
static unsigned short __devinit cyy_init_card(void __iomem *true_base_addr,
		int index)
{
	unsigned int chip_number;
	void __iomem *base_addr;

	cy_writeb(true_base_addr + (Cy_HwReset << index), 0);
	/* Cy_HwReset is 0x1400 */
	cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0);
	/* Cy_ClrIntr is 0x1800 */
	udelay(500L);

	for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD;
							chip_number++) {
		base_addr =
		    true_base_addr + (cy_chip_offset[chip_number] << index);
		mdelay(1);
		if (readb(base_addr + (CyCCR << index)) != 0x00) {
			/*************
			printk(" chip #%d at %#6lx is never idle (CCR != 0)\n",
			chip_number, (unsigned long)base_addr);
			*************/
			return chip_number;
		}

		cy_writeb(base_addr + (CyGFRCR << index), 0);
		udelay(10L);

		/* The Cyclom-16Y does not decode address bit 9 and therefore
		   cannot distinguish between references to chip 0 and a non-
		   existent chip 4.  If the preceding clearing of the supposed
		   chip 4 GFRCR register appears at chip 0, there is no chip 4
		   and this must be a Cyclom-16Y, not a Cyclom-32Ye.
		 */
		if (chip_number == 4 && readb(true_base_addr +
				(cy_chip_offset[0] << index) +
				(CyGFRCR << index)) == 0) {
			return chip_number;
		}

		cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET);
		mdelay(1);

		if (readb(base_addr + (CyGFRCR << index)) == 0x00) {
			/*
			   printk(" chip #%d at %#6lx is not responding ",
			   chip_number, (unsigned long)base_addr);
			   printk("(GFRCR stayed 0)\n",
			 */
			return chip_number;
		}
		if ((0xf0 & (readb(base_addr + (CyGFRCR << index)))) !=
				0x40) {
			/*
			printk(" chip #%d at %#6lx is not valid (GFRCR == "
					"%#2x)\n",
					chip_number, (unsigned long)base_addr,
					base_addr[CyGFRCR<<index]);
			 */
			return chip_number;
		}
		cy_writeb(base_addr + (CyGCR << index), CyCH0_SERIAL);
		if (readb(base_addr + (CyGFRCR << index)) >= CD1400_REV_J) {
			/* It is a CD1400 rev. J or later */
			/* Impossible to reach 5ms with this chip.
			   Changed to 2ms instead (f = 500 Hz). */
			cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS);
		} else {
			/* f = 200 Hz */
			cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS);
		}

		/*
		   printk(" chip #%d at %#6lx is rev 0x%2x\n",
		   chip_number, (unsigned long)base_addr,
		   readb(base_addr+(CyGFRCR<<index)));
		 */
	}
	return chip_number;
}				/* cyy_init_card */

/*
 * ---------------------------------------------------------------------
 * cy_detect_isa() - Probe for Cyclom-Y/ISA boards.
 * sets global variables and return the number of ISA boards found.
 * ---------------------------------------------------------------------
 */
static int __init cy_detect_isa(void)
{
#ifdef CONFIG_ISA
	unsigned short cy_isa_irq, nboard;
	void __iomem *cy_isa_address;
	unsigned short i, j, cy_isa_nchan;
	int isparam = 0;

	nboard = 0;

	/* Check for module parameters */
	for (i = 0; i < NR_CARDS; i++) {
		if (maddr[i] || i) {
			isparam = 1;
			cy_isa_addresses[i] = maddr[i];
		}
		if (!maddr[i])
			break;
	}

	/* scan the address table probing for Cyclom-Y/ISA boards */
	for (i = 0; i < NR_ISA_ADDRS; i++) {
		unsigned int isa_address = cy_isa_addresses[i];
		if (isa_address == 0x0000)
			return nboard;

		/* probe for CD1400... */
		cy_isa_address = ioremap_nocache(isa_address, CyISA_Ywin);
		if (cy_isa_address == NULL) {
			printk(KERN_ERR "Cyclom-Y/ISA: can't remap base "
					"address\n");
			continue;
		}
		cy_isa_nchan = CyPORTS_PER_CHIP *
			cyy_init_card(cy_isa_address, 0);
		if (cy_isa_nchan == 0) {
			iounmap(cy_isa_address);
			continue;
		}

		if (isparam && i < NR_CARDS && irq[i])
			cy_isa_irq = irq[i];
		else
			/* find out the board's irq by probing */
			cy_isa_irq = detect_isa_irq(cy_isa_address);
		if (cy_isa_irq == 0) {
			printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the "
				"IRQ could not be detected.\n",
				(unsigned long)cy_isa_address);
			iounmap(cy_isa_address);
			continue;
		}

		if ((cy_next_channel + cy_isa_nchan) > NR_PORTS) {
			printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no "
				"more channels are available. Change NR_PORTS "
				"in cyclades.c and recompile kernel.\n",
				(unsigned long)cy_isa_address);
			iounmap(cy_isa_address);
			return nboard;
		}
		/* fill the next cy_card structure available */
		for (j = 0; j < NR_CARDS; j++) {
			if (cy_card[j].base_addr == NULL)
				break;
		}
		if (j == NR_CARDS) {	/* no more cy_cards available */
			printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no "
				"more cards can be used. Change NR_CARDS in "
				"cyclades.c and recompile kernel.\n",
				(unsigned long)cy_isa_address);
			iounmap(cy_isa_address);
			return nboard;
		}

		/* allocate IRQ */
		if (request_irq(cy_isa_irq, cyy_interrupt,
				0, "Cyclom-Y", &cy_card[j])) {
			printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but "
				"could not allocate IRQ#%d.\n",
				(unsigned long)cy_isa_address, cy_isa_irq);
			iounmap(cy_isa_address);
			return nboard;
		}

		/* set cy_card */
		cy_card[j].base_addr = cy_isa_address;
		cy_card[j].ctl_addr.p9050 = NULL;
		cy_card[j].irq = (int)cy_isa_irq;
		cy_card[j].bus_index = 0;
		cy_card[j].first_line = cy_next_channel;
		cy_card[j].num_chips = cy_isa_nchan / CyPORTS_PER_CHIP;
		cy_card[j].nports = cy_isa_nchan;
		if (cy_init_card(&cy_card[j])) {
			cy_card[j].base_addr = NULL;
			free_irq(cy_isa_irq, &cy_card[j]);
			iounmap(cy_isa_address);
			continue;
		}
		nboard++;

		printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: "
			"%d channels starting from port %d\n",
			j + 1, (unsigned long)cy_isa_address,
			(unsigned long)(cy_isa_address + (CyISA_Ywin - 1)),
			cy_isa_irq, cy_isa_nchan, cy_next_channel);

		for (j = cy_next_channel;
				j < cy_next_channel + cy_isa_nchan; j++)
			tty_register_device(cy_serial_driver, j, NULL);
		cy_next_channel += cy_isa_nchan;
	}
	return nboard;
#else
	return 0;
#endif				/* CONFIG_ISA */
}				/* cy_detect_isa */

#ifdef CONFIG_PCI
static inline int __devinit cyc_isfwstr(const char *str, unsigned int size)
{
	unsigned int a;

	for (a = 0; a < size && *str; a++, str++)
		if (*str & 0x80)
			return -EINVAL;

	for (; a < size; a++, str++)
		if (*str)
			return -EINVAL;

	return 0;
}

static inline void __devinit cyz_fpga_copy(void __iomem *fpga, const u8 *data,
		unsigned int size)
{
	for (; size > 0; size--) {
		cy_writel(fpga, *data++);
		udelay(10);
	}
}

static void __devinit plx_init(struct pci_dev *pdev, int irq,
		struct RUNTIME_9060 __iomem *addr)
{
	/* Reset PLX */
	cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x40000000);
	udelay(100L);
	cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x40000000);

	/* Reload Config. Registers from EEPROM */
	cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x20000000);
	udelay(100L);
	cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x20000000);

	/* For some yet unknown reason, once the PLX9060 reloads the EEPROM,
	 * the IRQ is lost and, thus, we have to re-write it to the PCI config.
	 * registers. This will remain here until we find a permanent fix.
	 */
	pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq);
}

static int __devinit __cyz_load_fw(const struct firmware *fw,
		const char *name, const u32 mailbox, void __iomem *base,
		void __iomem *fpga)
{
	const void *ptr = fw->data;
	const struct zfile_header *h = ptr;
	const struct zfile_config *c, *cs;
	const struct zfile_block *b, *bs;
	unsigned int a, tmp, len = fw->size;
#define BAD_FW KERN_ERR "Bad firmware: "
	if (len < sizeof(*h)) {
		printk(BAD_FW "too short: %u<%zu\n", len, sizeof(*h));
		return -EINVAL;
	}

	cs = ptr + h->config_offset;
	bs = ptr + h->block_offset;

	if ((void *)(cs + h->n_config) > ptr + len ||
			(void *)(bs + h->n_blocks) > ptr + len) {
		printk(BAD_FW "too short");
		return  -EINVAL;
	}

	if (cyc_isfwstr(h->name, sizeof(h->name)) ||
			cyc_isfwstr(h->date, sizeof(h->date))) {
		printk(BAD_FW "bad formatted header string\n");
		return -EINVAL;
	}

	if (strncmp(name, h->name, sizeof(h->name))) {
		printk(BAD_FW "bad name '%s' (expected '%s')\n", h->name, name);
		return -EINVAL;
	}

	tmp = 0;
	for (c = cs; c < cs + h->n_config; c++) {
		for (a = 0; a < c->n_blocks; a++)
			if (c->block_list[a] > h->n_blocks) {
				printk(BAD_FW "bad block ref number in cfgs\n");
				return -EINVAL;
			}
		if (c->mailbox == mailbox && c->function == 0) /* 0 is normal */
			tmp++;
	}
	if (!tmp) {
		printk(BAD_FW "nothing appropriate\n");
		return -EINVAL;
	}

	for (b = bs; b < bs + h->n_blocks; b++)
		if (b->file_offset + b->size > len) {
			printk(BAD_FW "bad block data offset\n");
			return -EINVAL;
		}

	/* everything is OK, let's seek'n'load it */
	for (c = cs; c < cs + h->n_config; c++)
		if (c->mailbox == mailbox && c->function == 0)
			break;

	for (a = 0; a < c->n_blocks; a++) {
		b = &bs[c->block_list[a]];
		if (b->type == ZBLOCK_FPGA) {
			if (fpga != NULL)
				cyz_fpga_copy(fpga, ptr + b->file_offset,
						b->size);
		} else {
			if (base != NULL)
				memcpy_toio(base + b->ram_offset,
					       ptr + b->file_offset, b->size);
		}
	}
#undef BAD_FW
	return 0;
}

static int __devinit cyz_load_fw(struct pci_dev *pdev, void __iomem *base_addr,
		struct RUNTIME_9060 __iomem *ctl_addr, int irq)
{
	const struct firmware *fw;
	struct FIRM_ID __iomem *fid = base_addr + ID_ADDRESS;
	struct CUSTOM_REG __iomem *cust = base_addr;
	struct ZFW_CTRL __iomem *pt_zfwctrl;
	void __iomem *tmp;
	u32 mailbox, status, nchan;
	unsigned int i;
	int retval;

	retval = request_firmware(&fw, "cyzfirm.bin", &pdev->dev);
	if (retval) {
		dev_err(&pdev->dev, "can't get firmware\n");
		goto err;
	}

	/* Check whether the firmware is already loaded and running. If
	   positive, skip this board */
	if (__cyz_fpga_loaded(ctl_addr) && readl(&fid->signature) == ZFIRM_ID) {
		u32 cntval = readl(base_addr + 0x190);

		udelay(100);
		if (cntval != readl(base_addr + 0x190)) {
			/* FW counter is working, FW is running */
			dev_dbg(&pdev->dev, "Cyclades-Z FW already loaded. "
					"Skipping board.\n");
			retval = 0;
			goto err_rel;
		}
	}

	/* start boot */
	cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) &
			~0x00030800UL);

	mailbox = readl(&ctl_addr->mail_box_0);

	if (mailbox == 0 || __cyz_fpga_loaded(ctl_addr)) {
		/* stops CPU and set window to beginning of RAM */
		cy_writel(&ctl_addr->loc_addr_base, WIN_CREG);
		cy_writel(&cust->cpu_stop, 0);
		cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
		udelay(100);
	}

	plx_init(pdev, irq, ctl_addr);

	if (mailbox != 0) {
		/* load FPGA */
		retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, NULL,
				base_addr);
		if (retval)
			goto err_rel;
		if (!__cyz_fpga_loaded(ctl_addr)) {
			dev_err(&pdev->dev, "fw upload successful, but fw is "
					"not loaded\n");
			goto err_rel;
		}
	}

	/* stops CPU and set window to beginning of RAM */
	cy_writel(&ctl_addr->loc_addr_base, WIN_CREG);
	cy_writel(&cust->cpu_stop, 0);
	cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
	udelay(100);

	/* clear memory */
	for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++)
		cy_writeb(tmp, 255);
	if (mailbox != 0) {
		/* set window to last 512K of RAM */
		cy_writel(&ctl_addr->loc_addr_base, WIN_RAM + RAM_SIZE);
		for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++)
			cy_writeb(tmp, 255);
		/* set window to beginning of RAM */
		cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
	}

	retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, base_addr, NULL);
	release_firmware(fw);
	if (retval)
		goto err;

	/* finish boot and start boards */
	cy_writel(&ctl_addr->loc_addr_base, WIN_CREG);
	cy_writel(&cust->cpu_start, 0);
	cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
	i = 0;
	while ((status = readl(&fid->signature)) != ZFIRM_ID && i++ < 40)
		msleep(100);
	if (status != ZFIRM_ID) {
		if (status == ZFIRM_HLT) {
			dev_err(&pdev->dev, "you need an external power supply "
				"for this number of ports. Firmware halted and "
				"board reset.\n");
			retval = -EIO;
			goto err;
		}
		dev_warn(&pdev->dev, "fid->signature = 0x%x... Waiting "
				"some more time\n", status);
		while ((status = readl(&fid->signature)) != ZFIRM_ID &&
				i++ < 200)
			msleep(100);
		if (status != ZFIRM_ID) {
			dev_err(&pdev->dev, "Board not started in 20 seconds! "
					"Giving up. (fid->signature = 0x%x)\n",
					status);
			dev_info(&pdev->dev, "*** Warning ***: if you are "
				"upgrading the FW, please power cycle the "
				"system before loading the new FW to the "
				"Cyclades-Z.\n");

			if (__cyz_fpga_loaded(ctl_addr))
				plx_init(pdev, irq, ctl_addr);

			retval = -EIO;
			goto err;
		}
		dev_dbg(&pdev->dev, "Firmware started after %d seconds.\n",
				i / 10);
	}
	pt_zfwctrl = base_addr + readl(&fid->zfwctrl_addr);

	dev_dbg(&pdev->dev, "fid=> %p, zfwctrl_addr=> %x, npt_zfwctrl=> %p\n",
			base_addr + ID_ADDRESS, readl(&fid->zfwctrl_addr),
			base_addr + readl(&fid->zfwctrl_addr));

	nchan = readl(&pt_zfwctrl->board_ctrl.n_channel);
	dev_info(&pdev->dev, "Cyclades-Z FW loaded: version = %x, ports = %u\n",
		readl(&pt_zfwctrl->board_ctrl.fw_version), nchan);

	if (nchan == 0) {
		dev_warn(&pdev->dev, "no Cyclades-Z ports were found. Please "
			"check the connection between the Z host card and the "
			"serial expanders.\n");

		if (__cyz_fpga_loaded(ctl_addr))
			plx_init(pdev, irq, ctl_addr);

		dev_info(&pdev->dev, "Null number of ports detected. Board "
				"reset.\n");
		retval = 0;
		goto err;
	}

	cy_writel(&pt_zfwctrl->board_ctrl.op_system, C_OS_LINUX);
	cy_writel(&pt_zfwctrl->board_ctrl.dr_version, DRIVER_VERSION);

	/*
	   Early firmware failed to start looking for commands.
	   This enables firmware interrupts for those commands.
	 */
	cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) |
			(1 << 17));
	cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) |
			0x00030800UL);

	return nchan;
err_rel:
	release_firmware(fw);
err:
	return retval;
}

static int __devinit cy_pci_probe(struct pci_dev *pdev,
		const struct pci_device_id *ent)
{
	void __iomem *addr0 = NULL, *addr2 = NULL;
	char *card_name = NULL;
	u32 uninitialized_var(mailbox);
	unsigned int device_id, nchan = 0, card_no, i;
	unsigned char plx_ver;
	int retval, irq;

	retval = pci_enable_device(pdev);
	if (retval) {
		dev_err(&pdev->dev, "cannot enable device\n");
		goto err;
	}

	/* read PCI configuration area */
	irq = pdev->irq;
	device_id = pdev->device & ~PCI_DEVICE_ID_MASK;

#if defined(__alpha__)
	if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) {	/* below 1M? */
		dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for low "
			"addresses on Alpha systems.\n");
		retval = -EIO;
		goto err_dis;
	}
#endif
	if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) {
		dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for low "
			"addresses\n");
		retval = -EIO;
		goto err_dis;
	}

	if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) {
		dev_warn(&pdev->dev, "PCI I/O bit incorrectly set. Ignoring "
				"it...\n");
		pdev->resource[2].flags &= ~IORESOURCE_IO;
	}

	retval = pci_request_regions(pdev, "cyclades");
	if (retval) {
		dev_err(&pdev->dev, "failed to reserve resources\n");
		goto err_dis;
	}

	retval = -EIO;
	if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo ||
			device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) {
		card_name = "Cyclom-Y";

		addr0 = ioremap_nocache(pci_resource_start(pdev, 0),
				CyPCI_Yctl);
		if (addr0 == NULL) {
			dev_err(&pdev->dev, "can't remap ctl region\n");
			goto err_reg;
		}
		addr2 = ioremap_nocache(pci_resource_start(pdev, 2),
				CyPCI_Ywin);
		if (addr2 == NULL) {
			dev_err(&pdev->dev, "can't remap base region\n");
			goto err_unmap;
		}

		nchan = CyPORTS_PER_CHIP * cyy_init_card(addr2, 1);
		if (nchan == 0) {
			dev_err(&pdev->dev, "Cyclom-Y PCI host card with no "
					"Serial-Modules\n");
			goto err_unmap;
		}
	} else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) {
		struct RUNTIME_9060 __iomem *ctl_addr;

		ctl_addr = addr0 = ioremap_nocache(pci_resource_start(pdev, 0),
				CyPCI_Zctl);
		if (addr0 == NULL) {
			dev_err(&pdev->dev, "can't remap ctl region\n");
			goto err_reg;
		}

		/* Disable interrupts on the PLX before resetting it */
		cy_writew(&ctl_addr->intr_ctrl_stat,
				readw(&ctl_addr->intr_ctrl_stat) & ~0x0900);

		plx_init(pdev, irq, addr0);

		mailbox = readl(&ctl_addr->mail_box_0);

		addr2 = ioremap_nocache(pci_resource_start(pdev, 2),
				mailbox == ZE_V1 ? CyPCI_Ze_win : CyPCI_Zwin);
		if (addr2 == NULL) {
			dev_err(&pdev->dev, "can't remap base region\n");
			goto err_unmap;
		}

		if (mailbox == ZE_V1) {
			card_name = "Cyclades-Ze";
		} else {
			card_name = "Cyclades-8Zo";
#ifdef CY_PCI_DEBUG
			if (mailbox == ZO_V1) {
				cy_writel(&ctl_addr->loc_addr_base, WIN_CREG);
				dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA "
					"id %lx, ver %lx\n", (ulong)(0xff &
					readl(&((struct CUSTOM_REG *)addr2)->
						fpga_id)), (ulong)(0xff &
					readl(&((struct CUSTOM_REG *)addr2)->
						fpga_version)));
				cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
			} else {
				dev_info(&pdev->dev, "Cyclades-Z/PCI: New "
					"Cyclades-Z board.  FPGA not loaded\n");
			}
#endif
			/* The following clears the firmware id word.  This
			   ensures that the driver will not attempt to talk to
			   the board until it has been properly initialized.
			 */
			if ((mailbox == ZO_V1) || (mailbox == ZO_V2))
				cy_writel(addr2 + ID_ADDRESS, 0L);
		}

		retval = cyz_load_fw(pdev, addr2, addr0, irq);
		if (retval <= 0)
			goto err_unmap;
		nchan = retval;
	}

	if ((cy_next_channel + nchan) > NR_PORTS) {
		dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no "
			"channels are available. Change NR_PORTS in "
			"cyclades.c and recompile kernel.\n");
		goto err_unmap;
	}
	/* fill the next cy_card structure available */
	for (card_no = 0; card_no < NR_CARDS; card_no++) {
		if (cy_card[card_no].base_addr == NULL)
			break;
	}
	if (card_no == NR_CARDS) {	/* no more cy_cards available */
		dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no "
			"more cards can be used. Change NR_CARDS in "
			"cyclades.c and recompile kernel.\n");
		goto err_unmap;
	}

	if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo ||
			device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) {
		/* allocate IRQ */
		retval = request_irq(irq, cyy_interrupt,
				IRQF_SHARED, "Cyclom-Y", &cy_card[card_no]);
		if (retval) {
			dev_err(&pdev->dev, "could not allocate IRQ\n");
			goto err_unmap;
		}
		cy_card[card_no].num_chips = nchan / CyPORTS_PER_CHIP;
	} else {
		struct FIRM_ID __iomem *firm_id = addr2 + ID_ADDRESS;
		struct ZFW_CTRL __iomem *zfw_ctrl;

		zfw_ctrl = addr2 + (readl(&firm_id->zfwctrl_addr) & 0xfffff);

		cy_card[card_no].hw_ver = mailbox;
		cy_card[card_no].num_chips = (unsigned int)-1;
		cy_card[card_no].board_ctrl = &zfw_ctrl->board_ctrl;
#ifdef CONFIG_CYZ_INTR
		/* allocate IRQ only if board has an IRQ */
		if (irq != 0 && irq != 255) {
			retval = request_irq(irq, cyz_interrupt,
					IRQF_SHARED, "Cyclades-Z",
					&cy_card[card_no]);
			if (retval) {
				dev_err(&pdev->dev, "could not allocate IRQ\n");
				goto err_unmap;
			}
		}
#endif				/* CONFIG_CYZ_INTR */
	}

	/* set cy_card */
	cy_card[card_no].base_addr = addr2;
	cy_card[card_no].ctl_addr.p9050 = addr0;
	cy_card[card_no].irq = irq;
	cy_card[card_no].bus_index = 1;
	cy_card[card_no].first_line = cy_next_channel;
	cy_card[card_no].nports = nchan;
	retval = cy_init_card(&cy_card[card_no]);
	if (retval)
		goto err_null;

	pci_set_drvdata(pdev, &cy_card[card_no]);

	if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo ||
			device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) {
		/* enable interrupts in the PCI interface */
		plx_ver = readb(addr2 + CyPLX_VER) & 0x0f;
		switch (plx_ver) {
		case PLX_9050:
			cy_writeb(addr0 + 0x4c, 0x43);
			break;

		case PLX_9060:
		case PLX_9080:
		default:	/* Old boards, use PLX_9060 */
		{
			struct RUNTIME_9060 __iomem *ctl_addr = addr0;
			plx_init(pdev, irq, ctl_addr);
			cy_writew(&ctl_addr->intr_ctrl_stat,
				readw(&ctl_addr->intr_ctrl_stat) | 0x0900);
			break;
		}
		}
	}

	dev_info(&pdev->dev, "%s/PCI #%d found: %d channels starting from "
		"port %d.\n", card_name, card_no + 1, nchan, cy_next_channel);
	for (i = cy_next_channel; i < cy_next_channel + nchan; i++)
		tty_register_device(cy_serial_driver, i, &pdev->dev);
	cy_next_channel += nchan;

	return 0;
err_null:
	cy_card[card_no].base_addr = NULL;
	free_irq(irq, &cy_card[card_no]);
err_unmap:
	iounmap(addr0);
	if (addr2)
		iounmap(addr2);
err_reg:
	pci_release_regions(pdev);
err_dis:
	pci_disable_device(pdev);
err:
	return retval;
}

static void __devexit cy_pci_remove(struct pci_dev *pdev)
{
	struct cyclades_card *cinfo = pci_get_drvdata(pdev);
	unsigned int i;

	/* non-Z with old PLX */
	if (!cy_is_Z(cinfo) && (readb(cinfo->base_addr + CyPLX_VER) & 0x0f) ==
			PLX_9050)
		cy_writeb(cinfo->ctl_addr.p9050 + 0x4c, 0);
	else
#ifndef CONFIG_CYZ_INTR
		if (!cy_is_Z(cinfo))
#endif
		cy_writew(&cinfo->ctl_addr.p9060->intr_ctrl_stat,
			readw(&cinfo->ctl_addr.p9060->intr_ctrl_stat) &
			~0x0900);

	iounmap(cinfo->base_addr);
	if (cinfo->ctl_addr.p9050)
		iounmap(cinfo->ctl_addr.p9050);
	if (cinfo->irq
#ifndef CONFIG_CYZ_INTR
		&& !cy_is_Z(cinfo)
#endif /* CONFIG_CYZ_INTR */
		)
		free_irq(cinfo->irq, cinfo);
	pci_release_regions(pdev);

	cinfo->base_addr = NULL;
	for (i = cinfo->first_line; i < cinfo->first_line +
			cinfo->nports; i++)
		tty_unregister_device(cy_serial_driver, i);
	cinfo->nports = 0;
	kfree(cinfo->ports);
}

static struct pci_driver cy_pci_driver = {
	.name = "cyclades",
	.id_table = cy_pci_dev_id,
	.probe = cy_pci_probe,
	.remove = __devexit_p(cy_pci_remove)
};
#endif

static int cyclades_proc_show(struct seq_file *m, void *v)
{
	struct cyclades_port *info;
	unsigned int i, j;
	__u32 cur_jifs = jiffies;

	seq_puts(m, "Dev TimeOpen   BytesOut  IdleOut    BytesIn   "
			"IdleIn  Overruns  Ldisc\n");

	/* Output one line for each known port */
	for (i = 0; i < NR_CARDS; i++)
		for (j = 0; j < cy_card[i].nports; j++) {
			info = &cy_card[i].ports[j];

			if (info->port.count) {
				/* XXX is the ldisc num worth this? */
				struct tty_struct *tty;
				struct tty_ldisc *ld;
				int num = 0;
				tty = tty_port_tty_get(&info->port);
				if (tty) {
					ld = tty_ldisc_ref(tty);
					if (ld) {
						num = ld->ops->num;
						tty_ldisc_deref(ld);
					}
					tty_kref_put(tty);
				}
				seq_printf(m, "%3d %8lu %10lu %8lu "
					"%10lu %8lu %9lu %6d\n", info->line,
					(cur_jifs - info->idle_stats.in_use) /
					HZ, info->idle_stats.xmit_bytes,
					(cur_jifs - info->idle_stats.xmit_idle)/
					HZ, info->idle_stats.recv_bytes,
					(cur_jifs - info->idle_stats.recv_idle)/
					HZ, info->idle_stats.overruns,
					num);
			} else
				seq_printf(m, "%3d %8lu %10lu %8lu "
					"%10lu %8lu %9lu %6ld\n",
					info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L);
		}
	return 0;
}

static int cyclades_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, cyclades_proc_show, NULL);
}

static const struct file_operations cyclades_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= cyclades_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
};

/* The serial driver boot-time initialization code!
    Hardware I/O ports are mapped to character special devices on a
    first found, first allocated manner.  That is, this code searches
    for Cyclom cards in the system.  As each is found, it is probed
    to discover how many chips (and thus how many ports) are present.
    These ports are mapped to the tty ports 32 and upward in monotonic
    fashion.  If an 8-port card is replaced with a 16-port card, the
    port mapping on a following card will shift.

    This approach is different from what is used in the other serial
    device driver because the Cyclom is more properly a multiplexer,
    not just an aggregation of serial ports on one card.

    If there are more cards with more ports than have been
    statically allocated above, a warning is printed and the
    extra ports are ignored.
 */

static const struct tty_operations cy_ops = {
	.open = cy_open,
	.close = cy_close,
	.write = cy_write,
	.put_char = cy_put_char,
	.flush_chars = cy_flush_chars,
	.write_room = cy_write_room,
	.chars_in_buffer = cy_chars_in_buffer,
	.flush_buffer = cy_flush_buffer,
	.ioctl = cy_ioctl,
	.throttle = cy_throttle,
	.unthrottle = cy_unthrottle,
	.set_termios = cy_set_termios,
	.stop = cy_stop,
	.start = cy_start,
	.hangup = cy_hangup,
	.break_ctl = cy_break,
	.wait_until_sent = cy_wait_until_sent,
	.tiocmget = cy_tiocmget,
	.tiocmset = cy_tiocmset,
	.get_icount = cy_get_icount,
	.proc_fops = &cyclades_proc_fops,
};

static int __init cy_init(void)
{
	unsigned int nboards;
	int retval = -ENOMEM;

	cy_serial_driver = alloc_tty_driver(NR_PORTS);
	if (!cy_serial_driver)
		goto err;

	printk(KERN_INFO "Cyclades driver " CY_VERSION "\n");

	/* Initialize the tty_driver structure */

	cy_serial_driver->owner = THIS_MODULE;
	cy_serial_driver->driver_name = "cyclades";
	cy_serial_driver->name = "ttyC";
	cy_serial_driver->major = CYCLADES_MAJOR;
	cy_serial_driver->minor_start = 0;
	cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL;
	cy_serial_driver->subtype = SERIAL_TYPE_NORMAL;
	cy_serial_driver->init_termios = tty_std_termios;
	cy_serial_driver->init_termios.c_cflag =
	    B9600 | CS8 | CREAD | HUPCL | CLOCAL;
	cy_serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
	tty_set_operations(cy_serial_driver, &cy_ops);

	retval = tty_register_driver(cy_serial_driver);
	if (retval) {
		printk(KERN_ERR "Couldn't register Cyclades serial driver\n");
		goto err_frtty;
	}

	/* the code below is responsible to find the boards. Each different
	   type of board has its own detection routine. If a board is found,
	   the next cy_card structure available is set by the detection
	   routine. These functions are responsible for checking the
	   availability of cy_card and cy_port data structures and updating
	   the cy_next_channel. */

	/* look for isa boards */
	nboards = cy_detect_isa();

#ifdef CONFIG_PCI
	/* look for pci boards */
	retval = pci_register_driver(&cy_pci_driver);
	if (retval && !nboards) {
		tty_unregister_driver(cy_serial_driver);
		goto err_frtty;
	}
#endif

	return 0;
err_frtty:
	put_tty_driver(cy_serial_driver);
err:
	return retval;
}				/* cy_init */

static void __exit cy_cleanup_module(void)
{
	struct cyclades_card *card;
	unsigned int i, e1;

#ifndef CONFIG_CYZ_INTR
	del_timer_sync(&cyz_timerlist);
#endif /* CONFIG_CYZ_INTR */

	e1 = tty_unregister_driver(cy_serial_driver);
	if (e1)
		printk(KERN_ERR "failed to unregister Cyclades serial "
				"driver(%d)\n", e1);

#ifdef CONFIG_PCI
	pci_unregister_driver(&cy_pci_driver);
#endif

	for (i = 0; i < NR_CARDS; i++) {
		card = &cy_card[i];
		if (card->base_addr) {
			/* clear interrupt */
			cy_writeb(card->base_addr + Cy_ClrIntr, 0);
			iounmap(card->base_addr);
			if (card->ctl_addr.p9050)
				iounmap(card->ctl_addr.p9050);
			if (card->irq
#ifndef CONFIG_CYZ_INTR
				&& !cy_is_Z(card)
#endif /* CONFIG_CYZ_INTR */
				)
				free_irq(card->irq, card);
			for (e1 = card->first_line; e1 < card->first_line +
					card->nports; e1++)
				tty_unregister_device(cy_serial_driver, e1);
			kfree(card->ports);
		}
	}

	put_tty_driver(cy_serial_driver);
} /* cy_cleanup_module */

module_init(cy_init);
module_exit(cy_cleanup_module);

MODULE_LICENSE("GPL");
MODULE_VERSION(CY_VERSION);
MODULE_ALIAS_CHARDEV_MAJOR(CYCLADES_MAJOR);
MODULE_FIRMWARE("cyzfirm.bin");