Eric Lee / smarc-fsl-linux-kernel

atmel.c 130 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 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499 4500 4501 4502 4503 4504 4505 4506 4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546 4547 4548 4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 
/*** -*- linux-c -*- **********************************************************

     Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.

	Copyright 2000-2001 ATMEL Corporation.
	Copyright 2003-2004 Simon Kelley.

    This code was developed from version 2.1.1 of the Atmel drivers,
    released by Atmel corp. under the GPL in December 2002. It also
    includes code from the Linux aironet drivers (C) Benjamin Reed,
    and the Linux PCMCIA package, (C) David Hinds and the Linux wireless
    extensions, (C) Jean Tourrilhes.

    The firmware module for reading the MAC address of the card comes from
    net.russotto.AtmelMACFW, written by Matthew T. Russotto and copyright
    by him. net.russotto.AtmelMACFW is used under the GPL license version 2.
    This file contains the module in binary form and, under the terms
    of the GPL, in source form. The source is located at the end of the file.

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This software is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with Atmel wireless lan drivers; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    For all queries about this code, please contact the current author,
    Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.

    Credit is due to HP UK and Cambridge Online Systems Ltd for supplying
    hardware used during development of this driver.

******************************************************************************/

#include <linux/init.h>
#include <linux/interrupt.h>

#include <linux/kernel.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/timer.h>
#include <asm/byteorder.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/uaccess.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/if_arp.h>
#include <linux/ioport.h>
#include <linux/fcntl.h>
#include <linux/delay.h>
#include <linux/wireless.h>
#include <net/iw_handler.h>
#include <linux/crc32.h>
#include <linux/proc_fs.h>
#include <linux/device.h>
#include <linux/moduleparam.h>
#include <linux/firmware.h>
#include <linux/jiffies.h>
#include <linux/ieee80211.h>
#include "atmel.h"

#define DRIVER_MAJOR 0
#define DRIVER_MINOR 98

MODULE_AUTHOR("Simon Kelley");
MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("Atmel at76c50x wireless cards");

/* The name of the firmware file to be loaded
   over-rides any automatic selection */
static char *firmware = NULL;
module_param(firmware, charp, 0);

/* table of firmware file names */
static struct {
	AtmelFWType fw_type;
	const char *fw_file;
	const char *fw_file_ext;
} fw_table[] = {
	{ ATMEL_FW_TYPE_502,		"atmel_at76c502",	"bin" },
	{ ATMEL_FW_TYPE_502D,		"atmel_at76c502d",	"bin" },
	{ ATMEL_FW_TYPE_502E,		"atmel_at76c502e",	"bin" },
	{ ATMEL_FW_TYPE_502_3COM,	"atmel_at76c502_3com",	"bin" },
	{ ATMEL_FW_TYPE_504,		"atmel_at76c504",	"bin" },
	{ ATMEL_FW_TYPE_504_2958,	"atmel_at76c504_2958",	"bin" },
	{ ATMEL_FW_TYPE_504A_2958,	"atmel_at76c504a_2958",	"bin" },
	{ ATMEL_FW_TYPE_506,		"atmel_at76c506",	"bin" },
	{ ATMEL_FW_TYPE_NONE,		NULL,			NULL }
};
MODULE_FIRMWARE("atmel_at76c502-wpa.bin");
MODULE_FIRMWARE("atmel_at76c502.bin");
MODULE_FIRMWARE("atmel_at76c502d-wpa.bin");
MODULE_FIRMWARE("atmel_at76c502d.bin");
MODULE_FIRMWARE("atmel_at76c502e-wpa.bin");
MODULE_FIRMWARE("atmel_at76c502e.bin");
MODULE_FIRMWARE("atmel_at76c502_3com-wpa.bin");
MODULE_FIRMWARE("atmel_at76c502_3com.bin");
MODULE_FIRMWARE("atmel_at76c504-wpa.bin");
MODULE_FIRMWARE("atmel_at76c504.bin");
MODULE_FIRMWARE("atmel_at76c504_2958-wpa.bin");
MODULE_FIRMWARE("atmel_at76c504_2958.bin");
MODULE_FIRMWARE("atmel_at76c504a_2958-wpa.bin");
MODULE_FIRMWARE("atmel_at76c504a_2958.bin");
MODULE_FIRMWARE("atmel_at76c506-wpa.bin");
MODULE_FIRMWARE("atmel_at76c506.bin");

#define MAX_SSID_LENGTH 32
#define MGMT_JIFFIES (256 * HZ / 100)

#define MAX_BSS_ENTRIES	64

/* registers */
#define GCR  0x00    /* (SIR0)  General Configuration Register */
#define BSR  0x02    /* (SIR1)  Bank Switching Select Register */
#define AR   0x04
#define DR   0x08
#define MR1  0x12    /* Mirror Register 1 */
#define MR2  0x14    /* Mirror Register 2 */
#define MR3  0x16    /* Mirror Register 3 */
#define MR4  0x18    /* Mirror Register 4 */

#define GPR1                            0x0c
#define GPR2                            0x0e
#define GPR3                            0x10
/*
 * Constants for the GCR register.
 */
#define GCR_REMAP     0x0400          /* Remap internal SRAM to 0 */
#define GCR_SWRES     0x0080          /* BIU reset (ARM and PAI are NOT reset) */
#define GCR_CORES     0x0060          /* Core Reset (ARM and PAI are reset) */
#define GCR_ENINT     0x0002          /* Enable Interrupts */
#define GCR_ACKINT    0x0008          /* Acknowledge Interrupts */

#define BSS_SRAM      0x0200          /* AMBA module selection --> SRAM */
#define BSS_IRAM      0x0100          /* AMBA module selection --> IRAM */
/*
 *Constants for the MR registers.
 */
#define MAC_INIT_COMPLETE       0x0001        /* MAC init has been completed */
#define MAC_BOOT_COMPLETE       0x0010        /* MAC boot has been completed */
#define MAC_INIT_OK             0x0002        /* MAC boot has been completed */

#define MIB_MAX_DATA_BYTES    212
#define MIB_HEADER_SIZE       4    /* first four fields */

struct get_set_mib {
	u8 type;
	u8 size;
	u8 index;
	u8 reserved;
	u8 data[MIB_MAX_DATA_BYTES];
};

struct rx_desc {
	u32          Next;
	u16          MsduPos;
	u16          MsduSize;

	u8           State;
	u8           Status;
	u8           Rate;
	u8           Rssi;
	u8           LinkQuality;
	u8           PreambleType;
	u16          Duration;
	u32          RxTime;
};

#define RX_DESC_FLAG_VALID       0x80
#define RX_DESC_FLAG_CONSUMED    0x40
#define RX_DESC_FLAG_IDLE        0x00

#define RX_STATUS_SUCCESS        0x00

#define RX_DESC_MSDU_POS_OFFSET      4
#define RX_DESC_MSDU_SIZE_OFFSET     6
#define RX_DESC_FLAGS_OFFSET         8
#define RX_DESC_STATUS_OFFSET        9
#define RX_DESC_RSSI_OFFSET          11
#define RX_DESC_LINK_QUALITY_OFFSET  12
#define RX_DESC_PREAMBLE_TYPE_OFFSET 13
#define RX_DESC_DURATION_OFFSET      14
#define RX_DESC_RX_TIME_OFFSET       16

struct tx_desc {
	u32       NextDescriptor;
	u16       TxStartOfFrame;
	u16       TxLength;

	u8        TxState;
	u8        TxStatus;
	u8        RetryCount;

	u8        TxRate;

	u8        KeyIndex;
	u8        ChiperType;
	u8        ChipreLength;
	u8        Reserved1;

	u8        Reserved;
	u8        PacketType;
	u16       HostTxLength;
};

#define TX_DESC_NEXT_OFFSET          0
#define TX_DESC_POS_OFFSET           4
#define TX_DESC_SIZE_OFFSET          6
#define TX_DESC_FLAGS_OFFSET         8
#define TX_DESC_STATUS_OFFSET        9
#define TX_DESC_RETRY_OFFSET         10
#define TX_DESC_RATE_OFFSET          11
#define TX_DESC_KEY_INDEX_OFFSET     12
#define TX_DESC_CIPHER_TYPE_OFFSET   13
#define TX_DESC_CIPHER_LENGTH_OFFSET 14
#define TX_DESC_PACKET_TYPE_OFFSET   17
#define TX_DESC_HOST_LENGTH_OFFSET   18

/*
 * Host-MAC interface
 */

#define TX_STATUS_SUCCESS       0x00

#define TX_FIRM_OWN             0x80
#define TX_DONE                 0x40

#define TX_ERROR                0x01

#define TX_PACKET_TYPE_DATA     0x01
#define TX_PACKET_TYPE_MGMT     0x02

#define ISR_EMPTY               0x00        /* no bits set in ISR */
#define ISR_TxCOMPLETE          0x01        /* packet transmitted */
#define ISR_RxCOMPLETE          0x02        /* packet received */
#define ISR_RxFRAMELOST         0x04        /* Rx Frame lost */
#define ISR_FATAL_ERROR         0x08        /* Fatal error */
#define ISR_COMMAND_COMPLETE    0x10        /* command completed */
#define ISR_OUT_OF_RANGE        0x20        /* command completed */
#define ISR_IBSS_MERGE          0x40        /* (4.1.2.30): IBSS merge */
#define ISR_GENERIC_IRQ         0x80

#define Local_Mib_Type          0x01
#define Mac_Address_Mib_Type    0x02
#define Mac_Mib_Type            0x03
#define Statistics_Mib_Type     0x04
#define Mac_Mgmt_Mib_Type       0x05
#define Mac_Wep_Mib_Type        0x06
#define Phy_Mib_Type            0x07
#define Multi_Domain_MIB        0x08

#define MAC_MGMT_MIB_CUR_BSSID_POS            14
#define MAC_MIB_FRAG_THRESHOLD_POS            8
#define MAC_MIB_RTS_THRESHOLD_POS             10
#define MAC_MIB_SHORT_RETRY_POS               16
#define MAC_MIB_LONG_RETRY_POS                17
#define MAC_MIB_SHORT_RETRY_LIMIT_POS         16
#define MAC_MGMT_MIB_BEACON_PER_POS           0
#define MAC_MGMT_MIB_STATION_ID_POS           6
#define MAC_MGMT_MIB_CUR_PRIVACY_POS          11
#define MAC_MGMT_MIB_CUR_BSSID_POS            14
#define MAC_MGMT_MIB_PS_MODE_POS              53
#define MAC_MGMT_MIB_LISTEN_INTERVAL_POS      54
#define MAC_MGMT_MIB_MULTI_DOMAIN_IMPLEMENTED 56
#define MAC_MGMT_MIB_MULTI_DOMAIN_ENABLED     57
#define PHY_MIB_CHANNEL_POS                   14
#define PHY_MIB_RATE_SET_POS                  20
#define PHY_MIB_REG_DOMAIN_POS                26
#define LOCAL_MIB_AUTO_TX_RATE_POS            3
#define LOCAL_MIB_SSID_SIZE                   5
#define LOCAL_MIB_TX_PROMISCUOUS_POS          6
#define LOCAL_MIB_TX_MGMT_RATE_POS            7
#define LOCAL_MIB_TX_CONTROL_RATE_POS         8
#define LOCAL_MIB_PREAMBLE_TYPE               9
#define MAC_ADDR_MIB_MAC_ADDR_POS             0

#define         CMD_Set_MIB_Vars              0x01
#define         CMD_Get_MIB_Vars              0x02
#define         CMD_Scan                      0x03
#define         CMD_Join                      0x04
#define         CMD_Start                     0x05
#define         CMD_EnableRadio               0x06
#define         CMD_DisableRadio              0x07
#define         CMD_SiteSurvey                0x0B

#define         CMD_STATUS_IDLE                   0x00
#define         CMD_STATUS_COMPLETE               0x01
#define         CMD_STATUS_UNKNOWN                0x02
#define         CMD_STATUS_INVALID_PARAMETER      0x03
#define         CMD_STATUS_FUNCTION_NOT_SUPPORTED 0x04
#define         CMD_STATUS_TIME_OUT               0x07
#define         CMD_STATUS_IN_PROGRESS            0x08
#define         CMD_STATUS_REJECTED_RADIO_OFF     0x09
#define         CMD_STATUS_HOST_ERROR             0xFF
#define         CMD_STATUS_BUSY                   0xFE

#define CMD_BLOCK_COMMAND_OFFSET        0
#define CMD_BLOCK_STATUS_OFFSET         1
#define CMD_BLOCK_PARAMETERS_OFFSET     4

#define SCAN_OPTIONS_SITE_SURVEY        0x80

#define MGMT_FRAME_BODY_OFFSET		24
#define MAX_AUTHENTICATION_RETRIES	3
#define MAX_ASSOCIATION_RETRIES		3

#define AUTHENTICATION_RESPONSE_TIME_OUT  1000

#define MAX_WIRELESS_BODY  2316 /* mtu is 2312, CRC is 4 */
#define LOOP_RETRY_LIMIT   500000

#define ACTIVE_MODE	1
#define PS_MODE		2

#define MAX_ENCRYPTION_KEYS 4
#define MAX_ENCRYPTION_KEY_SIZE 40

/*
 * 802.11 related definitions
 */

/*
 * Regulatory Domains
 */

#define REG_DOMAIN_FCC		0x10	/* Channels	1-11	USA				*/
#define REG_DOMAIN_DOC		0x20	/* Channel	1-11	Canada				*/
#define REG_DOMAIN_ETSI		0x30	/* Channel	1-13	Europe (ex Spain/France)	*/
#define REG_DOMAIN_SPAIN	0x31	/* Channel	10-11	Spain				*/
#define REG_DOMAIN_FRANCE	0x32	/* Channel	10-13	France				*/
#define REG_DOMAIN_MKK		0x40	/* Channel	14	Japan				*/
#define REG_DOMAIN_MKK1		0x41	/* Channel	1-14	Japan(MKK1)			*/
#define REG_DOMAIN_ISRAEL	0x50	/* Channel	3-9	ISRAEL				*/

#define BSS_TYPE_AD_HOC		1
#define BSS_TYPE_INFRASTRUCTURE 2

#define SCAN_TYPE_ACTIVE	0
#define SCAN_TYPE_PASSIVE	1

#define LONG_PREAMBLE		0
#define SHORT_PREAMBLE		1
#define AUTO_PREAMBLE		2

#define DATA_FRAME_WS_HEADER_SIZE   30

/* promiscuous mode control */
#define PROM_MODE_OFF			0x0
#define PROM_MODE_UNKNOWN		0x1
#define PROM_MODE_CRC_FAILED		0x2
#define PROM_MODE_DUPLICATED		0x4
#define PROM_MODE_MGMT			0x8
#define PROM_MODE_CTRL			0x10
#define PROM_MODE_BAD_PROTOCOL		0x20

#define IFACE_INT_STATUS_OFFSET		0
#define IFACE_INT_MASK_OFFSET		1
#define IFACE_LOCKOUT_HOST_OFFSET	2
#define IFACE_LOCKOUT_MAC_OFFSET	3
#define IFACE_FUNC_CTRL_OFFSET		28
#define IFACE_MAC_STAT_OFFSET		30
#define IFACE_GENERIC_INT_TYPE_OFFSET	32

#define CIPHER_SUITE_NONE     0
#define CIPHER_SUITE_WEP_64   1
#define CIPHER_SUITE_TKIP     2
#define CIPHER_SUITE_AES      3
#define CIPHER_SUITE_CCX      4
#define CIPHER_SUITE_WEP_128  5

/*
 * IFACE MACROS & definitions
 */

/*
 * FuncCtrl field:
 */
#define FUNC_CTRL_TxENABLE		0x10
#define FUNC_CTRL_RxENABLE		0x20
#define FUNC_CTRL_INIT_COMPLETE		0x01

/* A stub firmware image which reads the MAC address from NVRAM on the card.
   For copyright information and source see the end of this file. */
static u8 mac_reader[] = {
	0x06, 0x00, 0x00, 0xea, 0x04, 0x00, 0x00, 0xea, 0x03, 0x00, 0x00, 0xea, 0x02, 0x00, 0x00, 0xea,
	0x01, 0x00, 0x00, 0xea, 0x00, 0x00, 0x00, 0xea, 0xff, 0xff, 0xff, 0xea, 0xfe, 0xff, 0xff, 0xea,
	0xd3, 0x00, 0xa0, 0xe3, 0x00, 0xf0, 0x21, 0xe1, 0x0e, 0x04, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
	0x81, 0x11, 0xa0, 0xe1, 0x00, 0x10, 0x81, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x1c, 0x10, 0x90, 0xe5,
	0x10, 0x10, 0xc1, 0xe3, 0x1c, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3, 0x08, 0x10, 0x80, 0xe5,
	0x02, 0x03, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3, 0xb0, 0x10, 0xc0, 0xe1, 0xb4, 0x10, 0xc0, 0xe1,
	0xb8, 0x10, 0xc0, 0xe1, 0xbc, 0x10, 0xc0, 0xe1, 0x56, 0xdc, 0xa0, 0xe3, 0x21, 0x00, 0x00, 0xeb,
	0x0a, 0x00, 0xa0, 0xe3, 0x1a, 0x00, 0x00, 0xeb, 0x10, 0x00, 0x00, 0xeb, 0x07, 0x00, 0x00, 0xeb,
	0x02, 0x03, 0xa0, 0xe3, 0x02, 0x14, 0xa0, 0xe3, 0xb4, 0x10, 0xc0, 0xe1, 0x4c, 0x10, 0x9f, 0xe5,
	0xbc, 0x10, 0xc0, 0xe1, 0x10, 0x10, 0xa0, 0xe3, 0xb8, 0x10, 0xc0, 0xe1, 0xfe, 0xff, 0xff, 0xea,
	0x00, 0x40, 0x2d, 0xe9, 0x00, 0x20, 0xa0, 0xe3, 0x02, 0x3c, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
	0x28, 0x00, 0x9f, 0xe5, 0x37, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
	0x00, 0x40, 0x2d, 0xe9, 0x12, 0x2e, 0xa0, 0xe3, 0x06, 0x30, 0xa0, 0xe3, 0x00, 0x10, 0xa0, 0xe3,
	0x02, 0x04, 0xa0, 0xe3, 0x2f, 0x00, 0x00, 0xeb, 0x00, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1,
	0x00, 0x02, 0x00, 0x02, 0x80, 0x01, 0x90, 0xe0, 0x01, 0x00, 0x00, 0x0a, 0x01, 0x00, 0x50, 0xe2,
	0xfc, 0xff, 0xff, 0xea, 0x1e, 0xff, 0x2f, 0xe1, 0x80, 0x10, 0xa0, 0xe3, 0xf3, 0x06, 0xa0, 0xe3,
	0x00, 0x10, 0x80, 0xe5, 0x00, 0x10, 0xa0, 0xe3, 0x00, 0x10, 0x80, 0xe5, 0x01, 0x10, 0xa0, 0xe3,
	0x04, 0x10, 0x80, 0xe5, 0x00, 0x10, 0x80, 0xe5, 0x0e, 0x34, 0xa0, 0xe3, 0x1c, 0x10, 0x93, 0xe5,
	0x02, 0x1a, 0x81, 0xe3, 0x1c, 0x10, 0x83, 0xe5, 0x58, 0x11, 0x9f, 0xe5, 0x30, 0x10, 0x80, 0xe5,
	0x54, 0x11, 0x9f, 0xe5, 0x34, 0x10, 0x80, 0xe5, 0x38, 0x10, 0x80, 0xe5, 0x3c, 0x10, 0x80, 0xe5,
	0x10, 0x10, 0x90, 0xe5, 0x08, 0x00, 0x90, 0xe5, 0x1e, 0xff, 0x2f, 0xe1, 0xf3, 0x16, 0xa0, 0xe3,
	0x08, 0x00, 0x91, 0xe5, 0x05, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5, 0x10, 0x00, 0x91, 0xe5,
	0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0xff, 0x00, 0xa0, 0xe3, 0x0c, 0x00, 0x81, 0xe5,
	0x10, 0x00, 0x91, 0xe5, 0x02, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5,
	0x10, 0x00, 0x91, 0xe5, 0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x91, 0xe5,
	0xff, 0x00, 0x00, 0xe2, 0x1e, 0xff, 0x2f, 0xe1, 0x30, 0x40, 0x2d, 0xe9, 0x00, 0x50, 0xa0, 0xe1,
	0x03, 0x40, 0xa0, 0xe1, 0xa2, 0x02, 0xa0, 0xe1, 0x08, 0x00, 0x00, 0xe2, 0x03, 0x00, 0x80, 0xe2,
	0xd8, 0x10, 0x9f, 0xe5, 0x00, 0x00, 0xc1, 0xe5, 0x01, 0x20, 0xc1, 0xe5, 0xe2, 0xff, 0xff, 0xeb,
	0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x1a, 0x14, 0x00, 0xa0, 0xe3, 0xc4, 0xff, 0xff, 0xeb,
	0x04, 0x20, 0xa0, 0xe1, 0x05, 0x10, 0xa0, 0xe1, 0x02, 0x00, 0xa0, 0xe3, 0x01, 0x00, 0x00, 0xeb,
	0x30, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x70, 0x40, 0x2d, 0xe9, 0xf3, 0x46, 0xa0, 0xe3,
	0x00, 0x30, 0xa0, 0xe3, 0x00, 0x00, 0x50, 0xe3, 0x08, 0x00, 0x00, 0x9a, 0x8c, 0x50, 0x9f, 0xe5,
	0x03, 0x60, 0xd5, 0xe7, 0x0c, 0x60, 0x84, 0xe5, 0x10, 0x60, 0x94, 0xe5, 0x02, 0x00, 0x16, 0xe3,
	0xfc, 0xff, 0xff, 0x0a, 0x01, 0x30, 0x83, 0xe2, 0x00, 0x00, 0x53, 0xe1, 0xf7, 0xff, 0xff, 0x3a,
	0xff, 0x30, 0xa0, 0xe3, 0x0c, 0x30, 0x84, 0xe5, 0x08, 0x00, 0x94, 0xe5, 0x10, 0x00, 0x94, 0xe5,
	0x01, 0x00, 0x10, 0xe3, 0xfc, 0xff, 0xff, 0x0a, 0x08, 0x00, 0x94, 0xe5, 0x00, 0x00, 0xa0, 0xe3,
	0x00, 0x00, 0x52, 0xe3, 0x0b, 0x00, 0x00, 0x9a, 0x10, 0x50, 0x94, 0xe5, 0x02, 0x00, 0x15, 0xe3,
	0xfc, 0xff, 0xff, 0x0a, 0x0c, 0x30, 0x84, 0xe5, 0x10, 0x50, 0x94, 0xe5, 0x01, 0x00, 0x15, 0xe3,
	0xfc, 0xff, 0xff, 0x0a, 0x08, 0x50, 0x94, 0xe5, 0x01, 0x50, 0xc1, 0xe4, 0x01, 0x00, 0x80, 0xe2,
	0x02, 0x00, 0x50, 0xe1, 0xf3, 0xff, 0xff, 0x3a, 0xc8, 0x00, 0xa0, 0xe3, 0x98, 0xff, 0xff, 0xeb,
	0x70, 0x40, 0xbd, 0xe8, 0x1e, 0xff, 0x2f, 0xe1, 0x01, 0x0c, 0x00, 0x02, 0x01, 0x02, 0x00, 0x02,
	0x00, 0x01, 0x00, 0x02
};

struct atmel_private {
	void *card; /* Bus dependent structure varies for PCcard */
	int (*present_callback)(void *); /* And callback which uses it */
	char firmware_id[32];
	AtmelFWType firmware_type;
	u8 *firmware;
	int firmware_length;
	struct timer_list management_timer;
	struct net_device *dev;
	struct device *sys_dev;
	struct iw_statistics wstats;
	spinlock_t irqlock, timerlock;	/* spinlocks */
	enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
	enum {
		CARD_TYPE_PARALLEL_FLASH,
		CARD_TYPE_SPI_FLASH,
		CARD_TYPE_EEPROM
	} card_type;
	int do_rx_crc; /* If we need to CRC incoming packets */
	int probe_crc; /* set if we don't yet know */
	int crc_ok_cnt, crc_ko_cnt; /* counters for probing */
	u16 rx_desc_head;
	u16 tx_desc_free, tx_desc_head, tx_desc_tail, tx_desc_previous;
	u16 tx_free_mem, tx_buff_head, tx_buff_tail;

	u16 frag_seq, frag_len, frag_no;
	u8 frag_source[6];

	u8 wep_is_on, default_key, exclude_unencrypted, encryption_level;
	u8 group_cipher_suite, pairwise_cipher_suite;
	u8 wep_keys[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
	int wep_key_len[MAX_ENCRYPTION_KEYS];
	int use_wpa, radio_on_broken; /* firmware dependent stuff. */

	u16 host_info_base;
	struct host_info_struct {
		/* NB this is matched to the hardware, don't change. */
		u8 volatile int_status;
		u8 volatile int_mask;
		u8 volatile lockout_host;
		u8 volatile lockout_mac;

		u16 tx_buff_pos;
		u16 tx_buff_size;
		u16 tx_desc_pos;
		u16 tx_desc_count;

		u16 rx_buff_pos;
		u16 rx_buff_size;
		u16 rx_desc_pos;
		u16 rx_desc_count;

		u16 build_version;
		u16 command_pos;

		u16 major_version;
		u16 minor_version;

		u16 func_ctrl;
		u16 mac_status;
		u16 generic_IRQ_type;
		u8  reserved[2];
	} host_info;

	enum {
		STATION_STATE_SCANNING,
		STATION_STATE_JOINNING,
		STATION_STATE_AUTHENTICATING,
		STATION_STATE_ASSOCIATING,
		STATION_STATE_READY,
		STATION_STATE_REASSOCIATING,
		STATION_STATE_DOWN,
		STATION_STATE_MGMT_ERROR
	} station_state;

	int operating_mode, power_mode;
	time_t last_qual;
	int beacons_this_sec;
	int channel;
	int reg_domain, config_reg_domain;
	int tx_rate;
	int auto_tx_rate;
	int rts_threshold;
	int frag_threshold;
	int long_retry, short_retry;
	int preamble;
	int default_beacon_period, beacon_period, listen_interval;
	int CurrentAuthentTransactionSeqNum, ExpectedAuthentTransactionSeqNum;
	int AuthenticationRequestRetryCnt, AssociationRequestRetryCnt, ReAssociationRequestRetryCnt;
	enum {
		SITE_SURVEY_IDLE,
		SITE_SURVEY_IN_PROGRESS,
		SITE_SURVEY_COMPLETED
	} site_survey_state;
	unsigned long last_survey;

	int station_was_associated, station_is_associated;
	int fast_scan;

	struct bss_info {
		int channel;
		int SSIDsize;
		int RSSI;
		int UsingWEP;
		int preamble;
		int beacon_period;
		int BSStype;
		u8 BSSID[6];
		u8 SSID[MAX_SSID_LENGTH];
	} BSSinfo[MAX_BSS_ENTRIES];
	int BSS_list_entries, current_BSS;
	int connect_to_any_BSS;
	int SSID_size, new_SSID_size;
	u8 CurrentBSSID[6], BSSID[6];
	u8 SSID[MAX_SSID_LENGTH], new_SSID[MAX_SSID_LENGTH];
	u64 last_beacon_timestamp;
	u8 rx_buf[MAX_WIRELESS_BODY];
};

static u8 atmel_basic_rates[4] = {0x82, 0x84, 0x0b, 0x16};

static const struct {
	int reg_domain;
	int min, max;
	char *name;
} channel_table[] = { { REG_DOMAIN_FCC, 1, 11, "USA" },
		      { REG_DOMAIN_DOC, 1, 11, "Canada" },
		      { REG_DOMAIN_ETSI, 1, 13, "Europe" },
		      { REG_DOMAIN_SPAIN, 10, 11, "Spain" },
		      { REG_DOMAIN_FRANCE, 10, 13, "France" },
		      { REG_DOMAIN_MKK, 14, 14, "MKK" },
		      { REG_DOMAIN_MKK1, 1, 14, "MKK1" },
		      { REG_DOMAIN_ISRAEL, 3, 9, "Israel"} };

static void build_wpa_mib(struct atmel_private *priv);
static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
static void atmel_copy_to_card(struct net_device *dev, u16 dest,
			       const unsigned char *src, u16 len);
static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
			       u16 src, u16 len);
static void atmel_set_gcr(struct net_device *dev, u16 mask);
static void atmel_clear_gcr(struct net_device *dev, u16 mask);
static int atmel_lock_mac(struct atmel_private *priv);
static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
static void atmel_command_irq(struct atmel_private *priv);
static int atmel_validate_channel(struct atmel_private *priv, int channel);
static void atmel_management_frame(struct atmel_private *priv,
				   struct ieee80211_hdr *header,
				   u16 frame_len, u8 rssi);
static void atmel_management_timer(u_long a);
static void atmel_send_command(struct atmel_private *priv, int command,
			       void *cmd, int cmd_size);
static int atmel_send_command_wait(struct atmel_private *priv, int command,
				   void *cmd, int cmd_size);
static void atmel_transmit_management_frame(struct atmel_private *priv,
					    struct ieee80211_hdr *header,
					    u8 *body, int body_len);

static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index,
			   u8 data);
static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
			    u16 data);
static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
			  u8 *data, int data_len);
static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
			  u8 *data, int data_len);
static void atmel_scan(struct atmel_private *priv, int specific_ssid);
static void atmel_join_bss(struct atmel_private *priv, int bss_index);
static void atmel_smooth_qual(struct atmel_private *priv);
static void atmel_writeAR(struct net_device *dev, u16 data);
static int probe_atmel_card(struct net_device *dev);
static int reset_atmel_card(struct net_device *dev);
static void atmel_enter_state(struct atmel_private *priv, int new_state);
int atmel_open (struct net_device *dev);

static inline u16 atmel_hi(struct atmel_private *priv, u16 offset)
{
	return priv->host_info_base + offset;
}

static inline u16 atmel_co(struct atmel_private *priv, u16 offset)
{
	return priv->host_info.command_pos + offset;
}

static inline u16 atmel_rx(struct atmel_private *priv, u16 offset, u16 desc)
{
	return priv->host_info.rx_desc_pos + (sizeof(struct rx_desc) * desc) + offset;
}

static inline u16 atmel_tx(struct atmel_private *priv, u16 offset, u16 desc)
{
	return priv->host_info.tx_desc_pos + (sizeof(struct tx_desc) * desc) + offset;
}

static inline u8 atmel_read8(struct net_device *dev, u16 offset)
{
	return inb(dev->base_addr + offset);
}

static inline void atmel_write8(struct net_device *dev, u16 offset, u8 data)
{
	outb(data, dev->base_addr + offset);
}

static inline u16 atmel_read16(struct net_device *dev, u16 offset)
{
	return inw(dev->base_addr + offset);
}

static inline void atmel_write16(struct net_device *dev, u16 offset, u16 data)
{
	outw(data, dev->base_addr + offset);
}

static inline u8 atmel_rmem8(struct atmel_private *priv, u16 pos)
{
	atmel_writeAR(priv->dev, pos);
	return atmel_read8(priv->dev, DR);
}

static inline void atmel_wmem8(struct atmel_private *priv, u16 pos, u16 data)
{
	atmel_writeAR(priv->dev, pos);
	atmel_write8(priv->dev, DR, data);
}

static inline u16 atmel_rmem16(struct atmel_private *priv, u16 pos)
{
	atmel_writeAR(priv->dev, pos);
	return atmel_read16(priv->dev, DR);
}

static inline void atmel_wmem16(struct atmel_private *priv, u16 pos, u16 data)
{
	atmel_writeAR(priv->dev, pos);
	atmel_write16(priv->dev, DR, data);
}

static const struct iw_handler_def atmel_handler_def;

static void tx_done_irq(struct atmel_private *priv)
{
	int i;

	for (i = 0;
	     atmel_rmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head)) == TX_DONE &&
		     i < priv->host_info.tx_desc_count;
	     i++) {
		u8 status = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_STATUS_OFFSET, priv->tx_desc_head));
		u16 msdu_size = atmel_rmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_head));
		u8 type = atmel_rmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_head));

		atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_head), 0);

		priv->tx_free_mem += msdu_size;
		priv->tx_desc_free++;

		if (priv->tx_buff_head + msdu_size > (priv->host_info.tx_buff_pos + priv->host_info.tx_buff_size))
			priv->tx_buff_head = 0;
		else
			priv->tx_buff_head += msdu_size;

		if (priv->tx_desc_head < (priv->host_info.tx_desc_count - 1))
			priv->tx_desc_head++ ;
		else
			priv->tx_desc_head = 0;

		if (type == TX_PACKET_TYPE_DATA) {
			if (status == TX_STATUS_SUCCESS)
				priv->dev->stats.tx_packets++;
			else
				priv->dev->stats.tx_errors++;
			netif_wake_queue(priv->dev);
		}
	}
}

static u16 find_tx_buff(struct atmel_private *priv, u16 len)
{
	u16 bottom_free = priv->host_info.tx_buff_size - priv->tx_buff_tail;

	if (priv->tx_desc_free == 3 || priv->tx_free_mem < len)
		return 0;

	if (bottom_free >= len)
		return priv->host_info.tx_buff_pos + priv->tx_buff_tail;

	if (priv->tx_free_mem - bottom_free >= len) {
		priv->tx_buff_tail = 0;
		return priv->host_info.tx_buff_pos;
	}

	return 0;
}

static void tx_update_descriptor(struct atmel_private *priv, int is_bcast,
				 u16 len, u16 buff, u8 type)
{
	atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, priv->tx_desc_tail), buff);
	atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, priv->tx_desc_tail), len);
	if (!priv->use_wpa)
		atmel_wmem16(priv, atmel_tx(priv, TX_DESC_HOST_LENGTH_OFFSET, priv->tx_desc_tail), len);
	atmel_wmem8(priv, atmel_tx(priv, TX_DESC_PACKET_TYPE_OFFSET, priv->tx_desc_tail), type);
	atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RATE_OFFSET, priv->tx_desc_tail), priv->tx_rate);
	atmel_wmem8(priv, atmel_tx(priv, TX_DESC_RETRY_OFFSET, priv->tx_desc_tail), 0);
	if (priv->use_wpa) {
		int cipher_type, cipher_length;
		if (is_bcast) {
			cipher_type = priv->group_cipher_suite;
			if (cipher_type == CIPHER_SUITE_WEP_64 ||
			    cipher_type == CIPHER_SUITE_WEP_128)
				cipher_length = 8;
			else if (cipher_type == CIPHER_SUITE_TKIP)
				cipher_length = 12;
			else if (priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_64 ||
				 priv->pairwise_cipher_suite == CIPHER_SUITE_WEP_128) {
				cipher_type = priv->pairwise_cipher_suite;
				cipher_length = 8;
			} else {
				cipher_type = CIPHER_SUITE_NONE;
				cipher_length = 0;
			}
		} else {
			cipher_type = priv->pairwise_cipher_suite;
			if (cipher_type == CIPHER_SUITE_WEP_64 ||
			    cipher_type == CIPHER_SUITE_WEP_128)
				cipher_length = 8;
			else if (cipher_type == CIPHER_SUITE_TKIP)
				cipher_length = 12;
			else if (priv->group_cipher_suite == CIPHER_SUITE_WEP_64 ||
				 priv->group_cipher_suite == CIPHER_SUITE_WEP_128) {
				cipher_type = priv->group_cipher_suite;
				cipher_length = 8;
			} else {
				cipher_type = CIPHER_SUITE_NONE;
				cipher_length = 0;
			}
		}

		atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_TYPE_OFFSET, priv->tx_desc_tail),
			    cipher_type);
		atmel_wmem8(priv, atmel_tx(priv, TX_DESC_CIPHER_LENGTH_OFFSET, priv->tx_desc_tail),
			    cipher_length);
	}
	atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_tail), 0x80000000L);
	atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, priv->tx_desc_tail), TX_FIRM_OWN);
	if (priv->tx_desc_previous != priv->tx_desc_tail)
		atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, priv->tx_desc_previous), 0);
	priv->tx_desc_previous = priv->tx_desc_tail;
	if (priv->tx_desc_tail < (priv->host_info.tx_desc_count - 1))
		priv->tx_desc_tail++;
	else
		priv->tx_desc_tail = 0;
	priv->tx_desc_free--;
	priv->tx_free_mem -= len;
}

static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev)
{
	static const u8 SNAP_RFC1024[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
	struct atmel_private *priv = netdev_priv(dev);
	struct ieee80211_hdr header;
	unsigned long flags;
	u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;

	if (priv->card && priv->present_callback &&
	    !(*priv->present_callback)(priv->card)) {
		dev->stats.tx_errors++;
		dev_kfree_skb(skb);
		return NETDEV_TX_OK;
	}

	if (priv->station_state != STATION_STATE_READY) {
		dev->stats.tx_errors++;
		dev_kfree_skb(skb);
		return NETDEV_TX_OK;
	}

	/* first ensure the timer func cannot run */
	spin_lock_bh(&priv->timerlock);
	/* then stop the hardware ISR */
	spin_lock_irqsave(&priv->irqlock, flags);
	/* nb doing the above in the opposite order will deadlock */

	/* The Wireless Header is 30 bytes. In the Ethernet packet we "cut" the
	   12 first bytes (containing DA/SA) and put them in the appropriate
	   fields of the Wireless Header. Thus the packet length is then the
	   initial + 18 (+30-12) */

	if (!(buff = find_tx_buff(priv, len + 18))) {
		dev->stats.tx_dropped++;
		spin_unlock_irqrestore(&priv->irqlock, flags);
		spin_unlock_bh(&priv->timerlock);
		netif_stop_queue(dev);
		return NETDEV_TX_BUSY;
	}

	frame_ctl = IEEE80211_FTYPE_DATA;
	header.duration_id = 0;
	header.seq_ctrl = 0;
	if (priv->wep_is_on)
		frame_ctl |= IEEE80211_FCTL_PROTECTED;
	if (priv->operating_mode == IW_MODE_ADHOC) {
		skb_copy_from_linear_data(skb, &header.addr1, 6);
		memcpy(&header.addr2, dev->dev_addr, 6);
		memcpy(&header.addr3, priv->BSSID, 6);
	} else {
		frame_ctl |= IEEE80211_FCTL_TODS;
		memcpy(&header.addr1, priv->CurrentBSSID, 6);
		memcpy(&header.addr2, dev->dev_addr, 6);
		skb_copy_from_linear_data(skb, &header.addr3, 6);
	}

	if (priv->use_wpa)
		memcpy(&header.addr4, SNAP_RFC1024, 6);

	header.frame_control = cpu_to_le16(frame_ctl);
	/* Copy the wireless header into the card */
	atmel_copy_to_card(dev, buff, (unsigned char *)&header, DATA_FRAME_WS_HEADER_SIZE);
	/* Copy the packet sans its 802.3 header addresses which have been replaced */
	atmel_copy_to_card(dev, buff + DATA_FRAME_WS_HEADER_SIZE, skb->data + 12, len - 12);
	priv->tx_buff_tail += len - 12 + DATA_FRAME_WS_HEADER_SIZE;

	/* low bit of first byte of destination tells us if broadcast */
	tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA);
	dev->stats.tx_bytes += len;

	spin_unlock_irqrestore(&priv->irqlock, flags);
	spin_unlock_bh(&priv->timerlock);
	dev_kfree_skb(skb);

	return NETDEV_TX_OK;
}

static void atmel_transmit_management_frame(struct atmel_private *priv,
					    struct ieee80211_hdr *header,
					    u8 *body, int body_len)
{
	u16 buff;
	int len = MGMT_FRAME_BODY_OFFSET + body_len;

	if (!(buff = find_tx_buff(priv, len)))
		return;

	atmel_copy_to_card(priv->dev, buff, (u8 *)header, MGMT_FRAME_BODY_OFFSET);
	atmel_copy_to_card(priv->dev, buff + MGMT_FRAME_BODY_OFFSET, body, body_len);
	priv->tx_buff_tail += len;
	tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
}

static void fast_rx_path(struct atmel_private *priv,
			 struct ieee80211_hdr *header,
			 u16 msdu_size, u16 rx_packet_loc, u32 crc)
{
	/* fast path: unfragmented packet copy directly into skbuf */
	u8 mac4[6];
	struct sk_buff	*skb;
	unsigned char *skbp;

	/* get the final, mac 4 header field, this tells us encapsulation */
	atmel_copy_to_host(priv->dev, mac4, rx_packet_loc + 24, 6);
	msdu_size -= 6;

	if (priv->do_rx_crc) {
		crc = crc32_le(crc, mac4, 6);
		msdu_size -= 4;
	}

	if (!(skb = dev_alloc_skb(msdu_size + 14))) {
		priv->dev->stats.rx_dropped++;
		return;
	}

	skb_reserve(skb, 2);
	skbp = skb_put(skb, msdu_size + 12);
	atmel_copy_to_host(priv->dev, skbp + 12, rx_packet_loc + 30, msdu_size);

	if (priv->do_rx_crc) {
		u32 netcrc;
		crc = crc32_le(crc, skbp + 12, msdu_size);
		atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4);
		if ((crc ^ 0xffffffff) != netcrc) {
			priv->dev->stats.rx_crc_errors++;
			dev_kfree_skb(skb);
			return;
		}
	}

	memcpy(skbp, header->addr1, 6); /* destination address */
	if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
		memcpy(&skbp[6], header->addr3, 6);
	else
		memcpy(&skbp[6], header->addr2, 6); /* source address */

	skb->protocol = eth_type_trans(skb, priv->dev);
	skb->ip_summed = CHECKSUM_NONE;
	netif_rx(skb);
	priv->dev->stats.rx_bytes += 12 + msdu_size;
	priv->dev->stats.rx_packets++;
}

/* Test to see if the packet in card memory at packet_loc has a valid CRC
   It doesn't matter that this is slow: it is only used to proble the first few
   packets. */
static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size)
{
	int i = msdu_size - 4;
	u32 netcrc, crc = 0xffffffff;

	if (msdu_size < 4)
		return 0;

	atmel_copy_to_host(priv->dev, (void *)&netcrc, packet_loc + i, 4);

	atmel_writeAR(priv->dev, packet_loc);
	while (i--) {
		u8 octet = atmel_read8(priv->dev, DR);
		crc = crc32_le(crc, &octet, 1);
	}

	return (crc ^ 0xffffffff) == netcrc;
}

static void frag_rx_path(struct atmel_private *priv,
			 struct ieee80211_hdr *header,
			 u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no,
			 u8 frag_no, int more_frags)
{
	u8 mac4[6];
	u8 source[6];
	struct sk_buff *skb;

	if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
		memcpy(source, header->addr3, 6);
	else
		memcpy(source, header->addr2, 6);

	rx_packet_loc += 24; /* skip header */

	if (priv->do_rx_crc)
		msdu_size -= 4;

	if (frag_no == 0) { /* first fragment */
		atmel_copy_to_host(priv->dev, mac4, rx_packet_loc, 6);
		msdu_size -= 6;
		rx_packet_loc += 6;

		if (priv->do_rx_crc)
			crc = crc32_le(crc, mac4, 6);

		priv->frag_seq = seq_no;
		priv->frag_no = 1;
		priv->frag_len = msdu_size;
		memcpy(priv->frag_source, source, 6);
		memcpy(&priv->rx_buf[6], source, 6);
		memcpy(priv->rx_buf, header->addr1, 6);

		atmel_copy_to_host(priv->dev, &priv->rx_buf[12], rx_packet_loc, msdu_size);

		if (priv->do_rx_crc) {
			u32 netcrc;
			crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
			atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
			if ((crc ^ 0xffffffff) != netcrc) {
				priv->dev->stats.rx_crc_errors++;
				memset(priv->frag_source, 0xff, 6);
			}
		}

	} else if (priv->frag_no == frag_no &&
		   priv->frag_seq == seq_no &&
		   memcmp(priv->frag_source, source, 6) == 0) {

		atmel_copy_to_host(priv->dev, &priv->rx_buf[12 + priv->frag_len],
				   rx_packet_loc, msdu_size);
		if (priv->do_rx_crc) {
			u32 netcrc;
			crc = crc32_le(crc,
				       &priv->rx_buf[12 + priv->frag_len],
				       msdu_size);
			atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
			if ((crc ^ 0xffffffff) != netcrc) {
				priv->dev->stats.rx_crc_errors++;
				memset(priv->frag_source, 0xff, 6);
				more_frags = 1; /* don't send broken assembly */
			}
		}

		priv->frag_len += msdu_size;
		priv->frag_no++;

		if (!more_frags) { /* last one */
			memset(priv->frag_source, 0xff, 6);
			if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
				priv->dev->stats.rx_dropped++;
			} else {
				skb_reserve(skb, 2);
				memcpy(skb_put(skb, priv->frag_len + 12),
				       priv->rx_buf,
				       priv->frag_len + 12);
				skb->protocol = eth_type_trans(skb, priv->dev);
				skb->ip_summed = CHECKSUM_NONE;
				netif_rx(skb);
				priv->dev->stats.rx_bytes += priv->frag_len + 12;
				priv->dev->stats.rx_packets++;
			}
		}
	} else
		priv->wstats.discard.fragment++;
}

static void rx_done_irq(struct atmel_private *priv)
{
	int i;
	struct ieee80211_hdr header;

	for (i = 0;
	     atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
		     i < priv->host_info.rx_desc_count;
	     i++) {

		u16 msdu_size, rx_packet_loc, frame_ctl, seq_control;
		u8 status = atmel_rmem8(priv, atmel_rx(priv, RX_DESC_STATUS_OFFSET, priv->rx_desc_head));
		u32 crc = 0xffffffff;

		if (status != RX_STATUS_SUCCESS) {
			if (status == 0xc1) /* determined by experiment */
				priv->wstats.discard.nwid++;
			else
				priv->dev->stats.rx_errors++;
			goto next;
		}

		msdu_size = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_SIZE_OFFSET, priv->rx_desc_head));
		rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));

		if (msdu_size < 30) {
			priv->dev->stats.rx_errors++;
			goto next;
		}

		/* Get header as far as end of seq_ctrl */
		atmel_copy_to_host(priv->dev, (char *)&header, rx_packet_loc, 24);
		frame_ctl = le16_to_cpu(header.frame_control);
		seq_control = le16_to_cpu(header.seq_ctrl);

		/* probe for CRC use here if needed  once five packets have
		   arrived with the same crc status, we assume we know what's
		   happening and stop probing */
		if (priv->probe_crc) {
			if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED)) {
				priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
			} else {
				priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
			}
			if (priv->do_rx_crc) {
				if (priv->crc_ok_cnt++ > 5)
					priv->probe_crc = 0;
			} else {
				if (priv->crc_ko_cnt++ > 5)
					priv->probe_crc = 0;
			}
		}

		/* don't CRC header when WEP in use */
		if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_PROTECTED))) {
			crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
		}
		msdu_size -= 24; /* header */

		if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
			int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS;
			u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG;
			u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4;

			if (!more_fragments && packet_fragment_no == 0) {
				fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
			} else {
				frag_rx_path(priv, &header, msdu_size, rx_packet_loc, crc,
					     packet_sequence_no, packet_fragment_no, more_fragments);
			}
		}

		if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
			/* copy rest of packet into buffer */
			atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);

			/* we use the same buffer for frag reassembly and control packets */
			memset(priv->frag_source, 0xff, 6);

			if (priv->do_rx_crc) {
				/* last 4 octets is crc */
				msdu_size -= 4;
				crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
				if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
					priv->dev->stats.rx_crc_errors++;
					goto next;
				}
			}

			atmel_management_frame(priv, &header, msdu_size,
					       atmel_rmem8(priv, atmel_rx(priv, RX_DESC_RSSI_OFFSET, priv->rx_desc_head)));
		}

next:
		/* release descriptor */
		atmel_wmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head), RX_DESC_FLAG_CONSUMED);

		if (priv->rx_desc_head < (priv->host_info.rx_desc_count - 1))
			priv->rx_desc_head++;
		else
			priv->rx_desc_head = 0;
	}
}

static irqreturn_t service_interrupt(int irq, void *dev_id)
{
	struct net_device *dev = (struct net_device *) dev_id;
	struct atmel_private *priv = netdev_priv(dev);
	u8 isr;
	int i = -1;
	static const u8 irq_order[] = {
		ISR_OUT_OF_RANGE,
		ISR_RxCOMPLETE,
		ISR_TxCOMPLETE,
		ISR_RxFRAMELOST,
		ISR_FATAL_ERROR,
		ISR_COMMAND_COMPLETE,
		ISR_IBSS_MERGE,
		ISR_GENERIC_IRQ
	};

	if (priv->card && priv->present_callback &&
	    !(*priv->present_callback)(priv->card))
		return IRQ_HANDLED;

	/* In this state upper-level code assumes it can mess with
	   the card unhampered by interrupts which may change register state.
	   Note that even though the card shouldn't generate interrupts
	   the inturrupt line may be shared. This allows card setup
	   to go on without disabling interrupts for a long time. */
	if (priv->station_state == STATION_STATE_DOWN)
		return IRQ_NONE;

	atmel_clear_gcr(dev, GCR_ENINT); /* disable interrupts */

	while (1) {
		if (!atmel_lock_mac(priv)) {
			/* failed to contact card */
			printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
			return IRQ_HANDLED;
		}

		isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
		atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);

		if (!isr) {
			atmel_set_gcr(dev, GCR_ENINT); /* enable interrupts */
			return i == -1 ? IRQ_NONE : IRQ_HANDLED;
		}

		atmel_set_gcr(dev, GCR_ACKINT); /* acknowledge interrupt */

		for (i = 0; i < ARRAY_SIZE(irq_order); i++)
			if (isr & irq_order[i])
				break;

		if (!atmel_lock_mac(priv)) {
			/* failed to contact card */
			printk(KERN_ALERT "%s: failed to contact MAC.\n", dev->name);
			return IRQ_HANDLED;
		}

		isr = atmel_rmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET));
		isr ^= irq_order[i];
		atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_STATUS_OFFSET), isr);
		atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);

		switch (irq_order[i]) {

		case ISR_OUT_OF_RANGE:
			if (priv->operating_mode == IW_MODE_INFRA &&
			    priv->station_state == STATION_STATE_READY) {
				priv->station_is_associated = 0;
				atmel_scan(priv, 1);
			}
			break;

		case ISR_RxFRAMELOST:
			priv->wstats.discard.misc++;
			/* fall through */
		case ISR_RxCOMPLETE:
			rx_done_irq(priv);
			break;

		case ISR_TxCOMPLETE:
			tx_done_irq(priv);
			break;

		case ISR_FATAL_ERROR:
			printk(KERN_ALERT "%s: *** FATAL error interrupt ***\n", dev->name);
			atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
			break;

		case ISR_COMMAND_COMPLETE:
			atmel_command_irq(priv);
			break;

		case ISR_IBSS_MERGE:
			atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
				      priv->CurrentBSSID, 6);
			/* The WPA stuff cares about the current AP address */
			if (priv->use_wpa)
				build_wpa_mib(priv);
			break;
		case ISR_GENERIC_IRQ:
			printk(KERN_INFO "%s: Generic_irq received.\n", dev->name);
			break;
		}
	}
}

static struct iw_statistics *atmel_get_wireless_stats(struct net_device *dev)
{
	struct atmel_private *priv = netdev_priv(dev);

	/* update the link quality here in case we are seeing no beacons
	   at all to drive the process */
	atmel_smooth_qual(priv);

	priv->wstats.status = priv->station_state;

	if (priv->operating_mode == IW_MODE_INFRA) {
		if (priv->station_state != STATION_STATE_READY) {
			priv->wstats.qual.qual = 0;
			priv->wstats.qual.level = 0;
			priv->wstats.qual.updated = (IW_QUAL_QUAL_INVALID
					| IW_QUAL_LEVEL_INVALID);
		}
		priv->wstats.qual.noise = 0;
		priv->wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
	} else {
		/* Quality levels cannot be determined in ad-hoc mode,
		   because we can 'hear' more that one remote station. */
		priv->wstats.qual.qual = 0;
		priv->wstats.qual.level	= 0;
		priv->wstats.qual.noise	= 0;
		priv->wstats.qual.updated = IW_QUAL_QUAL_INVALID
					| IW_QUAL_LEVEL_INVALID
					| IW_QUAL_NOISE_INVALID;
		priv->wstats.miss.beacon = 0;
	}

	return &priv->wstats;
}

static int atmel_change_mtu(struct net_device *dev, int new_mtu)
{
	if ((new_mtu < 68) || (new_mtu > 2312))
		return -EINVAL;
	dev->mtu = new_mtu;
	return 0;
}

static int atmel_set_mac_address(struct net_device *dev, void *p)
{
	struct sockaddr *addr = p;

	memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
	return atmel_open(dev);
}

EXPORT_SYMBOL(atmel_open);

int atmel_open(struct net_device *dev)
{
	struct atmel_private *priv = netdev_priv(dev);
	int i, channel, err;

	/* any scheduled timer is no longer needed and might screw things up.. */
	del_timer_sync(&priv->management_timer);

	/* Interrupts will not touch the card once in this state... */
	priv->station_state = STATION_STATE_DOWN;

	if (priv->new_SSID_size) {
		memcpy(priv->SSID, priv->new_SSID, priv->new_SSID_size);
		priv->SSID_size = priv->new_SSID_size;
		priv->new_SSID_size = 0;
	}
	priv->BSS_list_entries = 0;

	priv->AuthenticationRequestRetryCnt = 0;
	priv->AssociationRequestRetryCnt = 0;
	priv->ReAssociationRequestRetryCnt = 0;
	priv->CurrentAuthentTransactionSeqNum = 0x0001;
	priv->ExpectedAuthentTransactionSeqNum = 0x0002;

	priv->site_survey_state = SITE_SURVEY_IDLE;
	priv->station_is_associated = 0;

	err = reset_atmel_card(dev);
	if (err)
		return err;

	if (priv->config_reg_domain) {
		priv->reg_domain = priv->config_reg_domain;
		atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS, priv->reg_domain);
	} else {
		priv->reg_domain = atmel_get_mib8(priv, Phy_Mib_Type, PHY_MIB_REG_DOMAIN_POS);
		for (i = 0; i < ARRAY_SIZE(channel_table); i++)
			if (priv->reg_domain == channel_table[i].reg_domain)
				break;
		if (i == ARRAY_SIZE(channel_table)) {
			priv->reg_domain = REG_DOMAIN_MKK1;
			printk(KERN_ALERT "%s: failed to get regulatory domain: assuming MKK1.\n", dev->name);
		}
	}

	if ((channel = atmel_validate_channel(priv, priv->channel)))
		priv->channel = channel;

	/* this moves station_state on.... */
	atmel_scan(priv, 1);

	atmel_set_gcr(priv->dev, GCR_ENINT); /* enable interrupts */
	return 0;
}

static int atmel_close(struct net_device *dev)
{
	struct atmel_private *priv = netdev_priv(dev);

	/* Send event to userspace that we are disassociating */
	if (priv->station_state == STATION_STATE_READY) {
		union iwreq_data wrqu;

		wrqu.data.length = 0;
		wrqu.data.flags = 0;
		wrqu.ap_addr.sa_family = ARPHRD_ETHER;
		memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
		wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
	}

	atmel_enter_state(priv, STATION_STATE_DOWN);

	if (priv->bus_type == BUS_TYPE_PCCARD)
		atmel_write16(dev, GCR, 0x0060);
	atmel_write16(dev, GCR, 0x0040);
	return 0;
}

static int atmel_validate_channel(struct atmel_private *priv, int channel)
{
	/* check that channel is OK, if so return zero,
	   else return suitable default channel */
	int i;

	for (i = 0; i < ARRAY_SIZE(channel_table); i++)
		if (priv->reg_domain == channel_table[i].reg_domain) {
			if (channel >= channel_table[i].min &&
			    channel <= channel_table[i].max)
				return 0;
			else
				return channel_table[i].min;
		}
	return 0;
}

static int atmel_proc_output (char *buf, struct atmel_private *priv)
{
	int i;
	char *p = buf;
	char *s, *r, *c;

	p += sprintf(p, "Driver version:\t\t%d.%d\n",
		     DRIVER_MAJOR, DRIVER_MINOR);

	if (priv->station_state != STATION_STATE_DOWN) {
		p += sprintf(p, "Firmware version:\t%d.%d build %d\n"
				"Firmware location:\t",
			     priv->host_info.major_version,
			     priv->host_info.minor_version,
			     priv->host_info.build_version);

		if (priv->card_type != CARD_TYPE_EEPROM)
			p += sprintf(p, "on card\n");
		else if (priv->firmware)
			p += sprintf(p, "%s loaded by host\n",
				     priv->firmware_id);
		else
			p += sprintf(p, "%s loaded by hotplug\n",
				     priv->firmware_id);

		switch (priv->card_type) {
		case CARD_TYPE_PARALLEL_FLASH:
			c = "Parallel flash";
			break;
		case CARD_TYPE_SPI_FLASH:
			c = "SPI flash\n";
			break;
		case CARD_TYPE_EEPROM:
			c = "EEPROM";
			break;
		default:
			c = "<unknown>";
		}

		r = "<unknown>";
		for (i = 0; i < ARRAY_SIZE(channel_table); i++)
			if (priv->reg_domain == channel_table[i].reg_domain)
				r = channel_table[i].name;

		p += sprintf(p, "MAC memory type:\t%s\n", c);
		p += sprintf(p, "Regulatory domain:\t%s\n", r);
		p += sprintf(p, "Host CRC checking:\t%s\n",
			     priv->do_rx_crc ? "On" : "Off");
		p += sprintf(p, "WPA-capable firmware:\t%s\n",
			     priv->use_wpa ? "Yes" : "No");
	}

	switch (priv->station_state) {
	case STATION_STATE_SCANNING:
		s = "Scanning";
		break;
	case STATION_STATE_JOINNING:
		s = "Joining";
		break;
	case STATION_STATE_AUTHENTICATING:
		s = "Authenticating";
		break;
	case STATION_STATE_ASSOCIATING:
		s = "Associating";
		break;
	case STATION_STATE_READY:
		s = "Ready";
		break;
	case STATION_STATE_REASSOCIATING:
		s = "Reassociating";
		break;
	case STATION_STATE_MGMT_ERROR:
		s = "Management error";
		break;
	case STATION_STATE_DOWN:
		s = "Down";
		break;
	default:
		s = "<unknown>";
	}

	p += sprintf(p, "Current state:\t\t%s\n", s);
	return p - buf;
}

static int atmel_read_proc(char *page, char **start, off_t off,
			   int count, int *eof, void *data)
{
	struct atmel_private *priv = data;
	int len = atmel_proc_output (page, priv);
	if (len <= off+count)
		*eof = 1;
	*start = page + off;
	len -= off;
	if (len > count)
		len = count;
	if (len < 0)
		len = 0;
	return len;
}

static const struct net_device_ops atmel_netdev_ops = {
	.ndo_open 		= atmel_open,
	.ndo_stop		= atmel_close,
	.ndo_change_mtu 	= atmel_change_mtu,
	.ndo_set_mac_address 	= atmel_set_mac_address,
	.ndo_start_xmit 	= start_tx,
	.ndo_do_ioctl 		= atmel_ioctl,
	.ndo_validate_addr	= eth_validate_addr,
};

struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
				   const AtmelFWType fw_type,
				   struct device *sys_dev,
				   int (*card_present)(void *), void *card)
{
	struct proc_dir_entry *ent;
	struct net_device *dev;
	struct atmel_private *priv;
	int rc;

	/* Create the network device object. */
	dev = alloc_etherdev(sizeof(*priv));
	if (!dev) {
		printk(KERN_ERR "atmel: Couldn't alloc_etherdev\n");
		return NULL;
	}
	if (dev_alloc_name(dev, dev->name) < 0) {
		printk(KERN_ERR "atmel: Couldn't get name!\n");
		goto err_out_free;
	}

	priv = netdev_priv(dev);
	priv->dev = dev;
	priv->sys_dev = sys_dev;
	priv->present_callback = card_present;
	priv->card = card;
	priv->firmware = NULL;
	priv->firmware_id[0] = '\0';
	priv->firmware_type = fw_type;
	if (firmware) /* module parameter */
		strcpy(priv->firmware_id, firmware);
	priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
	priv->station_state = STATION_STATE_DOWN;
	priv->do_rx_crc = 0;
	/* For PCMCIA cards, some chips need CRC, some don't
	   so we have to probe. */
	if (priv->bus_type == BUS_TYPE_PCCARD) {
		priv->probe_crc = 1;
		priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
	} else
		priv->probe_crc = 0;
	priv->last_qual = jiffies;
	priv->last_beacon_timestamp = 0;
	memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
	memset(priv->BSSID, 0, 6);
	priv->CurrentBSSID[0] = 0xFF; /* Initialize to something invalid.... */
	priv->station_was_associated = 0;

	priv->last_survey = jiffies;
	priv->preamble = LONG_PREAMBLE;
	priv->operating_mode = IW_MODE_INFRA;
	priv->connect_to_any_BSS = 0;
	priv->config_reg_domain = 0;
	priv->reg_domain = 0;
	priv->tx_rate = 3;
	priv->auto_tx_rate = 1;
	priv->channel = 4;
	priv->power_mode = 0;
	priv->SSID[0] = '\0';
	priv->SSID_size = 0;
	priv->new_SSID_size = 0;
	priv->frag_threshold = 2346;
	priv->rts_threshold = 2347;
	priv->short_retry = 7;
	priv->long_retry = 4;

	priv->wep_is_on = 0;
	priv->default_key = 0;
	priv->encryption_level = 0;
	priv->exclude_unencrypted = 0;
	priv->group_cipher_suite = priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
	priv->use_wpa = 0;
	memset(priv->wep_keys, 0, sizeof(priv->wep_keys));
	memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));

	priv->default_beacon_period = priv->beacon_period = 100;
	priv->listen_interval = 1;

	init_timer(&priv->management_timer);
	spin_lock_init(&priv->irqlock);
	spin_lock_init(&priv->timerlock);
	priv->management_timer.function = atmel_management_timer;
	priv->management_timer.data = (unsigned long) dev;

	dev->netdev_ops = &atmel_netdev_ops;
	dev->wireless_handlers = &atmel_handler_def;
	dev->irq = irq;
	dev->base_addr = port;

	SET_NETDEV_DEV(dev, sys_dev);

	if ((rc = request_irq(dev->irq, service_interrupt, IRQF_SHARED, dev->name, dev))) {
		printk(KERN_ERR "%s: register interrupt %d failed, rc %d\n", dev->name, irq, rc);
		goto err_out_free;
	}

	if (!request_region(dev->base_addr, 32,
			    priv->bus_type == BUS_TYPE_PCCARD ?  "atmel_cs" : "atmel_pci")) {
		goto err_out_irq;
	}

	if (register_netdev(dev))
		goto err_out_res;

	if (!probe_atmel_card(dev)) {
		unregister_netdev(dev);
		goto err_out_res;
	}

	netif_carrier_off(dev);

	ent = create_proc_read_entry ("driver/atmel", 0, NULL, atmel_read_proc, priv);
	if (!ent)
		printk(KERN_WARNING "atmel: unable to create /proc entry.\n");

	printk(KERN_INFO "%s: Atmel at76c50x. Version %d.%d. MAC %pM\n",
	       dev->name, DRIVER_MAJOR, DRIVER_MINOR, dev->dev_addr);

	return dev;

err_out_res:
	release_region(dev->base_addr, 32);
err_out_irq:
	free_irq(dev->irq, dev);
err_out_free:
	free_netdev(dev);
	return NULL;
}

EXPORT_SYMBOL(init_atmel_card);

void stop_atmel_card(struct net_device *dev)
{
	struct atmel_private *priv = netdev_priv(dev);

	/* put a brick on it... */
	if (priv->bus_type == BUS_TYPE_PCCARD)
		atmel_write16(dev, GCR, 0x0060);
	atmel_write16(dev, GCR, 0x0040);

	del_timer_sync(&priv->management_timer);
	unregister_netdev(dev);
	remove_proc_entry("driver/atmel", NULL);
	free_irq(dev->irq, dev);
	kfree(priv->firmware);
	release_region(dev->base_addr, 32);
	free_netdev(dev);
}

EXPORT_SYMBOL(stop_atmel_card);

static int atmel_set_essid(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_point *dwrq,
			   char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	/* Check if we asked for `any' */
	if (dwrq->flags == 0) {
		priv->connect_to_any_BSS = 1;
	} else {
		int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;

		priv->connect_to_any_BSS = 0;

		/* Check the size of the string */
		if (dwrq->length > MAX_SSID_LENGTH)
			 return -E2BIG;
		if (index != 0)
			return -EINVAL;

		memcpy(priv->new_SSID, extra, dwrq->length);
		priv->new_SSID_size = dwrq->length;
	}

	return -EINPROGRESS;
}

static int atmel_get_essid(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_point *dwrq,
			   char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	/* Get the current SSID */
	if (priv->new_SSID_size != 0) {
		memcpy(extra, priv->new_SSID, priv->new_SSID_size);
		dwrq->length = priv->new_SSID_size;
	} else {
		memcpy(extra, priv->SSID, priv->SSID_size);
		dwrq->length = priv->SSID_size;
	}

	dwrq->flags = !priv->connect_to_any_BSS; /* active */

	return 0;
}

static int atmel_get_wap(struct net_device *dev,
			 struct iw_request_info *info,
			 struct sockaddr *awrq,
			 char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	memcpy(awrq->sa_data, priv->CurrentBSSID, 6);
	awrq->sa_family = ARPHRD_ETHER;

	return 0;
}

static int atmel_set_encode(struct net_device *dev,
			    struct iw_request_info *info,
			    struct iw_point *dwrq,
			    char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	/* Basic checking: do we have a key to set ?
	 * Note : with the new API, it's impossible to get a NULL pointer.
	 * Therefore, we need to check a key size == 0 instead.
	 * New version of iwconfig properly set the IW_ENCODE_NOKEY flag
	 * when no key is present (only change flags), but older versions
	 * don't do it. - Jean II */
	if (dwrq->length > 0) {
		int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
		int current_index = priv->default_key;
		/* Check the size of the key */
		if (dwrq->length > 13) {
			return -EINVAL;
		}
		/* Check the index (none -> use current) */
		if (index < 0 || index >= 4)
			index = current_index;
		else
			priv->default_key = index;
		/* Set the length */
		if (dwrq->length > 5)
			priv->wep_key_len[index] = 13;
		else
			if (dwrq->length > 0)
				priv->wep_key_len[index] = 5;
			else
				/* Disable the key */
				priv->wep_key_len[index] = 0;
		/* Check if the key is not marked as invalid */
		if (!(dwrq->flags & IW_ENCODE_NOKEY)) {
			/* Cleanup */
			memset(priv->wep_keys[index], 0, 13);
			/* Copy the key in the driver */
			memcpy(priv->wep_keys[index], extra, dwrq->length);
		}
		/* WE specify that if a valid key is set, encryption
		 * should be enabled (user may turn it off later)
		 * This is also how "iwconfig ethX key on" works */
		if (index == current_index &&
		    priv->wep_key_len[index] > 0) {
			priv->wep_is_on = 1;
			priv->exclude_unencrypted = 1;
			if (priv->wep_key_len[index] > 5) {
				priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
				priv->encryption_level = 2;
			} else {
				priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
				priv->encryption_level = 1;
			}
		}
	} else {
		/* Do we want to just set the transmit key index ? */
		int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
		if (index >= 0 && index < 4) {
			priv->default_key = index;
		} else
			/* Don't complain if only change the mode */
			if (!(dwrq->flags & IW_ENCODE_MODE))
				return -EINVAL;
	}
	/* Read the flags */
	if (dwrq->flags & IW_ENCODE_DISABLED) {
		priv->wep_is_on = 0;
		priv->encryption_level = 0;
		priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
	} else {
		priv->wep_is_on = 1;
		if (priv->wep_key_len[priv->default_key] > 5) {
			priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
			priv->encryption_level = 2;
		} else {
			priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
			priv->encryption_level = 1;
		}
	}
	if (dwrq->flags & IW_ENCODE_RESTRICTED)
		priv->exclude_unencrypted = 1;
	if (dwrq->flags & IW_ENCODE_OPEN)
		priv->exclude_unencrypted = 0;

	return -EINPROGRESS;		/* Call commit handler */
}

static int atmel_get_encode(struct net_device *dev,
			    struct iw_request_info *info,
			    struct iw_point *dwrq,
			    char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;

	if (!priv->wep_is_on)
		dwrq->flags = IW_ENCODE_DISABLED;
	else {
		if (priv->exclude_unencrypted)
			dwrq->flags = IW_ENCODE_RESTRICTED;
		else
			dwrq->flags = IW_ENCODE_OPEN;
	}
		/* Which key do we want ? -1 -> tx index */
	if (index < 0 || index >= 4)
		index = priv->default_key;
	dwrq->flags |= index + 1;
	/* Copy the key to the user buffer */
	dwrq->length = priv->wep_key_len[index];
	if (dwrq->length > 16) {
		dwrq->length = 0;
	} else {
		memset(extra, 0, 16);
		memcpy(extra, priv->wep_keys[index], dwrq->length);
	}

	return 0;
}

static int atmel_set_encodeext(struct net_device *dev,
			    struct iw_request_info *info,
			    union iwreq_data *wrqu,
			    char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	struct iw_point *encoding = &wrqu->encoding;
	struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
	int idx, key_len, alg = ext->alg, set_key = 1;

	/* Determine and validate the key index */
	idx = encoding->flags & IW_ENCODE_INDEX;
	if (idx) {
		if (idx < 1 || idx > 4)
			return -EINVAL;
		idx--;
	} else
		idx = priv->default_key;

	if (encoding->flags & IW_ENCODE_DISABLED)
	    alg = IW_ENCODE_ALG_NONE;

	if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
		priv->default_key = idx;
		set_key = ext->key_len > 0 ? 1 : 0;
	}

	if (set_key) {
		/* Set the requested key first */
		switch (alg) {
		case IW_ENCODE_ALG_NONE:
			priv->wep_is_on = 0;
			priv->encryption_level = 0;
			priv->pairwise_cipher_suite = CIPHER_SUITE_NONE;
			break;
		case IW_ENCODE_ALG_WEP:
			if (ext->key_len > 5) {
				priv->wep_key_len[idx] = 13;
				priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_128;
				priv->encryption_level = 2;
			} else if (ext->key_len > 0) {
				priv->wep_key_len[idx] = 5;
				priv->pairwise_cipher_suite = CIPHER_SUITE_WEP_64;
				priv->encryption_level = 1;
			} else {
				return -EINVAL;
			}
			priv->wep_is_on = 1;
			memset(priv->wep_keys[idx], 0, 13);
			key_len = min ((int)ext->key_len, priv->wep_key_len[idx]);
			memcpy(priv->wep_keys[idx], ext->key, key_len);
			break;
		default:
			return -EINVAL;
		}
	}

	return -EINPROGRESS;
}

static int atmel_get_encodeext(struct net_device *dev,
			    struct iw_request_info *info,
			    union iwreq_data *wrqu,
			    char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	struct iw_point *encoding = &wrqu->encoding;
	struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
	int idx, max_key_len;

	max_key_len = encoding->length - sizeof(*ext);
	if (max_key_len < 0)
		return -EINVAL;

	idx = encoding->flags & IW_ENCODE_INDEX;
	if (idx) {
		if (idx < 1 || idx > 4)
			return -EINVAL;
		idx--;
	} else
		idx = priv->default_key;

	encoding->flags = idx + 1;
	memset(ext, 0, sizeof(*ext));

	if (!priv->wep_is_on) {
		ext->alg = IW_ENCODE_ALG_NONE;
		ext->key_len = 0;
		encoding->flags |= IW_ENCODE_DISABLED;
	} else {
		if (priv->encryption_level > 0)
			ext->alg = IW_ENCODE_ALG_WEP;
		else
			return -EINVAL;

		ext->key_len = priv->wep_key_len[idx];
		memcpy(ext->key, priv->wep_keys[idx], ext->key_len);
		encoding->flags |= IW_ENCODE_ENABLED;
	}

	return 0;
}

static int atmel_set_auth(struct net_device *dev,
			       struct iw_request_info *info,
			       union iwreq_data *wrqu, char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	struct iw_param *param = &wrqu->param;

	switch (param->flags & IW_AUTH_INDEX) {
	case IW_AUTH_WPA_VERSION:
	case IW_AUTH_CIPHER_PAIRWISE:
	case IW_AUTH_CIPHER_GROUP:
	case IW_AUTH_KEY_MGMT:
	case IW_AUTH_RX_UNENCRYPTED_EAPOL:
	case IW_AUTH_PRIVACY_INVOKED:
		/*
		 * atmel does not use these parameters
		 */
		break;

	case IW_AUTH_DROP_UNENCRYPTED:
		priv->exclude_unencrypted = param->value ? 1 : 0;
		break;

	case IW_AUTH_80211_AUTH_ALG: {
			if (param->value & IW_AUTH_ALG_SHARED_KEY) {
				priv->exclude_unencrypted = 1;
			} else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
				priv->exclude_unencrypted = 0;
			} else
				return -EINVAL;
			break;
		}

	case IW_AUTH_WPA_ENABLED:
		/* Silently accept disable of WPA */
		if (param->value > 0)
			return -EOPNOTSUPP;
		break;

	default:
		return -EOPNOTSUPP;
	}
	return -EINPROGRESS;
}

static int atmel_get_auth(struct net_device *dev,
			       struct iw_request_info *info,
			       union iwreq_data *wrqu, char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	struct iw_param *param = &wrqu->param;

	switch (param->flags & IW_AUTH_INDEX) {
	case IW_AUTH_DROP_UNENCRYPTED:
		param->value = priv->exclude_unencrypted;
		break;

	case IW_AUTH_80211_AUTH_ALG:
		if (priv->exclude_unencrypted == 1)
			param->value = IW_AUTH_ALG_SHARED_KEY;
		else
			param->value = IW_AUTH_ALG_OPEN_SYSTEM;
		break;

	case IW_AUTH_WPA_ENABLED:
		param->value = 0;
		break;

	default:
		return -EOPNOTSUPP;
	}
	return 0;
}


static int atmel_get_name(struct net_device *dev,
			  struct iw_request_info *info,
			  char *cwrq,
			  char *extra)
{
	strcpy(cwrq, "IEEE 802.11-DS");
	return 0;
}

static int atmel_set_rate(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_param *vwrq,
			  char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	if (vwrq->fixed == 0) {
		priv->tx_rate = 3;
		priv->auto_tx_rate = 1;
	} else {
		priv->auto_tx_rate = 0;

		/* Which type of value ? */
		if ((vwrq->value < 4) && (vwrq->value >= 0)) {
			/* Setting by rate index */
			priv->tx_rate = vwrq->value;
		} else {
		/* Setting by frequency value */
			switch (vwrq->value) {
			case  1000000:
				priv->tx_rate = 0;
				break;
			case  2000000:
				priv->tx_rate = 1;
				break;
			case  5500000:
				priv->tx_rate = 2;
				break;
			case 11000000:
				priv->tx_rate = 3;
				break;
			default:
				return -EINVAL;
			}
		}
	}

	return -EINPROGRESS;
}

static int atmel_set_mode(struct net_device *dev,
			  struct iw_request_info *info,
			  __u32 *uwrq,
			  char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	if (*uwrq != IW_MODE_ADHOC && *uwrq != IW_MODE_INFRA)
		return -EINVAL;

	priv->operating_mode = *uwrq;
	return -EINPROGRESS;
}

static int atmel_get_mode(struct net_device *dev,
			  struct iw_request_info *info,
			  __u32 *uwrq,
			  char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	*uwrq = priv->operating_mode;
	return 0;
}

static int atmel_get_rate(struct net_device *dev,
			 struct iw_request_info *info,
			 struct iw_param *vwrq,
			 char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	if (priv->auto_tx_rate) {
		vwrq->fixed = 0;
		vwrq->value = 11000000;
	} else {
		vwrq->fixed = 1;
		switch (priv->tx_rate) {
		case 0:
			vwrq->value =  1000000;
			break;
		case 1:
			vwrq->value =  2000000;
			break;
		case 2:
			vwrq->value =  5500000;
			break;
		case 3:
			vwrq->value = 11000000;
			break;
		}
	}
	return 0;
}

static int atmel_set_power(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_param *vwrq,
			   char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	priv->power_mode = vwrq->disabled ? 0 : 1;
	return -EINPROGRESS;
}

static int atmel_get_power(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_param *vwrq,
			   char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	vwrq->disabled = priv->power_mode ? 0 : 1;
	vwrq->flags = IW_POWER_ON;
	return 0;
}

static int atmel_set_retry(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_param *vwrq,
			   char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	if (!vwrq->disabled && (vwrq->flags & IW_RETRY_LIMIT)) {
		if (vwrq->flags & IW_RETRY_LONG)
			priv->long_retry = vwrq->value;
		else if (vwrq->flags & IW_RETRY_SHORT)
			priv->short_retry = vwrq->value;
		else {
			/* No modifier : set both */
			priv->long_retry = vwrq->value;
			priv->short_retry = vwrq->value;
		}
		return -EINPROGRESS;
	}

	return -EINVAL;
}

static int atmel_get_retry(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_param *vwrq,
			   char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	vwrq->disabled = 0;      /* Can't be disabled */

	/* Note : by default, display the short retry number */
	if (vwrq->flags & IW_RETRY_LONG) {
		vwrq->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
		vwrq->value = priv->long_retry;
	} else {
		vwrq->flags = IW_RETRY_LIMIT;
		vwrq->value = priv->short_retry;
		if (priv->long_retry != priv->short_retry)
			vwrq->flags |= IW_RETRY_SHORT;
	}

	return 0;
}

static int atmel_set_rts(struct net_device *dev,
			 struct iw_request_info *info,
			 struct iw_param *vwrq,
			 char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	int rthr = vwrq->value;

	if (vwrq->disabled)
		rthr = 2347;
	if ((rthr < 0) || (rthr > 2347)) {
		return -EINVAL;
	}
	priv->rts_threshold = rthr;

	return -EINPROGRESS;		/* Call commit handler */
}

static int atmel_get_rts(struct net_device *dev,
			 struct iw_request_info *info,
			 struct iw_param *vwrq,
			 char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	vwrq->value = priv->rts_threshold;
	vwrq->disabled = (vwrq->value >= 2347);
	vwrq->fixed = 1;

	return 0;
}

static int atmel_set_frag(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_param *vwrq,
			  char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	int fthr = vwrq->value;

	if (vwrq->disabled)
		fthr = 2346;
	if ((fthr < 256) || (fthr > 2346)) {
		return -EINVAL;
	}
	fthr &= ~0x1;	/* Get an even value - is it really needed ??? */
	priv->frag_threshold = fthr;

	return -EINPROGRESS;		/* Call commit handler */
}

static int atmel_get_frag(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_param *vwrq,
			  char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	vwrq->value = priv->frag_threshold;
	vwrq->disabled = (vwrq->value >= 2346);
	vwrq->fixed = 1;

	return 0;
}

static int atmel_set_freq(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_freq *fwrq,
			  char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	int rc = -EINPROGRESS;		/* Call commit handler */

	/* If setting by frequency, convert to a channel */
	if (fwrq->e == 1) {
		int f = fwrq->m / 100000;

		/* Hack to fall through... */
		fwrq->e = 0;
		fwrq->m = ieee80211_freq_to_dsss_chan(f);
	}
	/* Setting by channel number */
	if ((fwrq->m > 1000) || (fwrq->e > 0))
		rc = -EOPNOTSUPP;
	else {
		int channel = fwrq->m;
		if (atmel_validate_channel(priv, channel) == 0) {
			priv->channel = channel;
		} else {
			rc = -EINVAL;
		}
	}
	return rc;
}

static int atmel_get_freq(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_freq *fwrq,
			  char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);

	fwrq->m = priv->channel;
	fwrq->e = 0;
	return 0;
}

static int atmel_set_scan(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_point *dwrq,
			  char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	unsigned long flags;

	/* Note : you may have realised that, as this is a SET operation,
	 * this is privileged and therefore a normal user can't
	 * perform scanning.
	 * This is not an error, while the device perform scanning,
	 * traffic doesn't flow, so it's a perfect DoS...
	 * Jean II */

	if (priv->station_state == STATION_STATE_DOWN)
		return -EAGAIN;

	/* Timeout old surveys. */
	if (time_after(jiffies, priv->last_survey + 20 * HZ))
		priv->site_survey_state = SITE_SURVEY_IDLE;
	priv->last_survey = jiffies;

	/* Initiate a scan command */
	if (priv->site_survey_state == SITE_SURVEY_IN_PROGRESS)
		return -EBUSY;

	del_timer_sync(&priv->management_timer);
	spin_lock_irqsave(&priv->irqlock, flags);

	priv->site_survey_state = SITE_SURVEY_IN_PROGRESS;
	priv->fast_scan = 0;
	atmel_scan(priv, 0);
	spin_unlock_irqrestore(&priv->irqlock, flags);

	return 0;
}

static int atmel_get_scan(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_point *dwrq,
			  char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	int i;
	char *current_ev = extra;
	struct iw_event	iwe;

	if (priv->site_survey_state != SITE_SURVEY_COMPLETED)
		return -EAGAIN;

	for (i = 0; i < priv->BSS_list_entries; i++) {
		iwe.cmd = SIOCGIWAP;
		iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
		memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, 6);
		current_ev = iwe_stream_add_event(info, current_ev,
						  extra + IW_SCAN_MAX_DATA,
						  &iwe, IW_EV_ADDR_LEN);

		iwe.u.data.length =  priv->BSSinfo[i].SSIDsize;
		if (iwe.u.data.length > 32)
			iwe.u.data.length = 32;
		iwe.cmd = SIOCGIWESSID;
		iwe.u.data.flags = 1;
		current_ev = iwe_stream_add_point(info, current_ev,
						  extra + IW_SCAN_MAX_DATA,
						  &iwe, priv->BSSinfo[i].SSID);

		iwe.cmd = SIOCGIWMODE;
		iwe.u.mode = priv->BSSinfo[i].BSStype;
		current_ev = iwe_stream_add_event(info, current_ev,
						  extra + IW_SCAN_MAX_DATA,
						  &iwe, IW_EV_UINT_LEN);

		iwe.cmd = SIOCGIWFREQ;
		iwe.u.freq.m = priv->BSSinfo[i].channel;
		iwe.u.freq.e = 0;
		current_ev = iwe_stream_add_event(info, current_ev,
						  extra + IW_SCAN_MAX_DATA,
						  &iwe, IW_EV_FREQ_LEN);

		/* Add quality statistics */
		iwe.cmd = IWEVQUAL;
		iwe.u.qual.level = priv->BSSinfo[i].RSSI;
		iwe.u.qual.qual  = iwe.u.qual.level;
		/* iwe.u.qual.noise  = SOMETHING */
		current_ev = iwe_stream_add_event(info, current_ev,
						  extra + IW_SCAN_MAX_DATA,
						  &iwe, IW_EV_QUAL_LEN);


		iwe.cmd = SIOCGIWENCODE;
		if (priv->BSSinfo[i].UsingWEP)
			iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
		else
			iwe.u.data.flags = IW_ENCODE_DISABLED;
		iwe.u.data.length = 0;
		current_ev = iwe_stream_add_point(info, current_ev,
						  extra + IW_SCAN_MAX_DATA,
						  &iwe, NULL);
	}

	/* Length of data */
	dwrq->length = (current_ev - extra);
	dwrq->flags = 0;

	return 0;
}

static int atmel_get_range(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_point *dwrq,
			   char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	struct iw_range *range = (struct iw_range *) extra;
	int k, i, j;

	dwrq->length = sizeof(struct iw_range);
	memset(range, 0, sizeof(struct iw_range));
	range->min_nwid = 0x0000;
	range->max_nwid = 0x0000;
	range->num_channels = 0;
	for (j = 0; j < ARRAY_SIZE(channel_table); j++)
		if (priv->reg_domain == channel_table[j].reg_domain) {
			range->num_channels = channel_table[j].max - channel_table[j].min + 1;
			break;
		}
	if (range->num_channels != 0) {
		for (k = 0, i = channel_table[j].min; i <= channel_table[j].max; i++) {
			range->freq[k].i = i; /* List index */

			/* Values in MHz -> * 10^5 * 10 */
			range->freq[k].m = (ieee80211_dsss_chan_to_freq(i) *
					    100000);
			range->freq[k++].e = 1;
		}
		range->num_frequency = k;
	}

	range->max_qual.qual = 100;
	range->max_qual.level = 100;
	range->max_qual.noise = 0;
	range->max_qual.updated = IW_QUAL_NOISE_INVALID;

	range->avg_qual.qual = 50;
	range->avg_qual.level = 50;
	range->avg_qual.noise = 0;
	range->avg_qual.updated = IW_QUAL_NOISE_INVALID;

	range->sensitivity = 0;

	range->bitrate[0] =  1000000;
	range->bitrate[1] =  2000000;
	range->bitrate[2] =  5500000;
	range->bitrate[3] = 11000000;
	range->num_bitrates = 4;

	range->min_rts = 0;
	range->max_rts = 2347;
	range->min_frag = 256;
	range->max_frag = 2346;

	range->encoding_size[0] = 5;
	range->encoding_size[1] = 13;
	range->num_encoding_sizes = 2;
	range->max_encoding_tokens = 4;

	range->pmp_flags = IW_POWER_ON;
	range->pmt_flags = IW_POWER_ON;
	range->pm_capa = 0;

	range->we_version_source = WIRELESS_EXT;
	range->we_version_compiled = WIRELESS_EXT;
	range->retry_capa = IW_RETRY_LIMIT ;
	range->retry_flags = IW_RETRY_LIMIT;
	range->r_time_flags = 0;
	range->min_retry = 1;
	range->max_retry = 65535;

	return 0;
}

static int atmel_set_wap(struct net_device *dev,
			 struct iw_request_info *info,
			 struct sockaddr *awrq,
			 char *extra)
{
	struct atmel_private *priv = netdev_priv(dev);
	int i;
	static const u8 any[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
	static const u8 off[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
	unsigned long flags;

	if (awrq->sa_family != ARPHRD_ETHER)
		return -EINVAL;

	if (!memcmp(any, awrq->sa_data, 6) ||
	    !memcmp(off, awrq->sa_data, 6)) {
		del_timer_sync(&priv->management_timer);
		spin_lock_irqsave(&priv->irqlock, flags);
		atmel_scan(priv, 1);
		spin_unlock_irqrestore(&priv->irqlock, flags);
		return 0;
	}

	for (i = 0; i < priv->BSS_list_entries; i++) {
		if (memcmp(priv->BSSinfo[i].BSSID, awrq->sa_data, 6) == 0) {
			if (!priv->wep_is_on && priv->BSSinfo[i].UsingWEP) {
				return -EINVAL;
			} else if  (priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) {
				return -EINVAL;
			} else {
				del_timer_sync(&priv->management_timer);
				spin_lock_irqsave(&priv->irqlock, flags);
				atmel_join_bss(priv, i);
				spin_unlock_irqrestore(&priv->irqlock, flags);
				return 0;
			}
		}
	}

	return -EINVAL;
}

static int atmel_config_commit(struct net_device *dev,
			       struct iw_request_info *info,	/* NULL */
			       void *zwrq,			/* NULL */
			       char *extra)			/* NULL */
{
	return atmel_open(dev);
}

static const iw_handler atmel_handler[] =
{
	(iw_handler) atmel_config_commit,	/* SIOCSIWCOMMIT */
	(iw_handler) atmel_get_name,		/* SIOCGIWNAME */
	(iw_handler) NULL,			/* SIOCSIWNWID */
	(iw_handler) NULL,			/* SIOCGIWNWID */
	(iw_handler) atmel_set_freq,		/* SIOCSIWFREQ */
	(iw_handler) atmel_get_freq,		/* SIOCGIWFREQ */
	(iw_handler) atmel_set_mode,		/* SIOCSIWMODE */
	(iw_handler) atmel_get_mode,		/* SIOCGIWMODE */
	(iw_handler) NULL,			/* SIOCSIWSENS */
	(iw_handler) NULL,			/* SIOCGIWSENS */
	(iw_handler) NULL,			/* SIOCSIWRANGE */
	(iw_handler) atmel_get_range,           /* SIOCGIWRANGE */
	(iw_handler) NULL,			/* SIOCSIWPRIV */
	(iw_handler) NULL,			/* SIOCGIWPRIV */
	(iw_handler) NULL,			/* SIOCSIWSTATS */
	(iw_handler) NULL,			/* SIOCGIWSTATS */
	(iw_handler) NULL,			/* SIOCSIWSPY */
	(iw_handler) NULL,			/* SIOCGIWSPY */
	(iw_handler) NULL,			/* -- hole -- */
	(iw_handler) NULL,			/* -- hole -- */
	(iw_handler) atmel_set_wap,		/* SIOCSIWAP */
	(iw_handler) atmel_get_wap,		/* SIOCGIWAP */
	(iw_handler) NULL,			/* -- hole -- */
	(iw_handler) NULL,			/* SIOCGIWAPLIST */
	(iw_handler) atmel_set_scan,		/* SIOCSIWSCAN */
	(iw_handler) atmel_get_scan,		/* SIOCGIWSCAN */
	(iw_handler) atmel_set_essid,		/* SIOCSIWESSID */
	(iw_handler) atmel_get_essid,		/* SIOCGIWESSID */
	(iw_handler) NULL,			/* SIOCSIWNICKN */
	(iw_handler) NULL,			/* SIOCGIWNICKN */
	(iw_handler) NULL,			/* -- hole -- */
	(iw_handler) NULL,			/* -- hole -- */
	(iw_handler) atmel_set_rate,		/* SIOCSIWRATE */
	(iw_handler) atmel_get_rate,		/* SIOCGIWRATE */
	(iw_handler) atmel_set_rts,		/* SIOCSIWRTS */
	(iw_handler) atmel_get_rts,		/* SIOCGIWRTS */
	(iw_handler) atmel_set_frag,		/* SIOCSIWFRAG */
	(iw_handler) atmel_get_frag,		/* SIOCGIWFRAG */
	(iw_handler) NULL,			/* SIOCSIWTXPOW */
	(iw_handler) NULL,			/* SIOCGIWTXPOW */
	(iw_handler) atmel_set_retry,		/* SIOCSIWRETRY */
	(iw_handler) atmel_get_retry,		/* SIOCGIWRETRY */
	(iw_handler) atmel_set_encode,		/* SIOCSIWENCODE */
	(iw_handler) atmel_get_encode,		/* SIOCGIWENCODE */
	(iw_handler) atmel_set_power,		/* SIOCSIWPOWER */
	(iw_handler) atmel_get_power,		/* SIOCGIWPOWER */
	(iw_handler) NULL,			/* -- hole -- */
	(iw_handler) NULL,			/* -- hole -- */
	(iw_handler) NULL,			/* SIOCSIWGENIE */
	(iw_handler) NULL,			/* SIOCGIWGENIE */
	(iw_handler) atmel_set_auth,		/* SIOCSIWAUTH */
	(iw_handler) atmel_get_auth,		/* SIOCGIWAUTH */
	(iw_handler) atmel_set_encodeext,	/* SIOCSIWENCODEEXT */
	(iw_handler) atmel_get_encodeext,	/* SIOCGIWENCODEEXT */
	(iw_handler) NULL,			/* SIOCSIWPMKSA */
};

static const iw_handler atmel_private_handler[] =
{
	NULL,				/* SIOCIWFIRSTPRIV */
};

typedef struct atmel_priv_ioctl {
	char id[32];
	unsigned char __user *data;
	unsigned short len;
} atmel_priv_ioctl;

#define ATMELFWL	SIOCIWFIRSTPRIV
#define ATMELIDIFC	ATMELFWL + 1
#define ATMELRD		ATMELFWL + 2
#define ATMELMAGIC 0x51807
#define REGDOMAINSZ 20

static const struct iw_priv_args atmel_private_args[] = {
	{
		.cmd = ATMELFWL,
		.set_args = IW_PRIV_TYPE_BYTE
				| IW_PRIV_SIZE_FIXED
				| sizeof (atmel_priv_ioctl),
		.get_args = IW_PRIV_TYPE_NONE,
		.name = "atmelfwl"
	}, {
		.cmd = ATMELIDIFC,
		.set_args = IW_PRIV_TYPE_NONE,
		.get_args = IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
		.name = "atmelidifc"
	}, {
		.cmd = ATMELRD,
		.set_args = IW_PRIV_TYPE_CHAR | REGDOMAINSZ,
		.get_args = IW_PRIV_TYPE_NONE,
		.name = "regdomain"
	},
};

static const struct iw_handler_def atmel_handler_def = {
	.num_standard	= ARRAY_SIZE(atmel_handler),
	.num_private	= ARRAY_SIZE(atmel_private_handler),
	.num_private_args = ARRAY_SIZE(atmel_private_args),
	.standard	= (iw_handler *) atmel_handler,
	.private	= (iw_handler *) atmel_private_handler,
	.private_args	= (struct iw_priv_args *) atmel_private_args,
	.get_wireless_stats = atmel_get_wireless_stats
};

static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
	int i, rc = 0;
	struct atmel_private *priv = netdev_priv(dev);
	atmel_priv_ioctl com;
	struct iwreq *wrq = (struct iwreq *) rq;
	unsigned char *new_firmware;
	char domain[REGDOMAINSZ + 1];

	switch (cmd) {
	case ATMELIDIFC:
		wrq->u.param.value = ATMELMAGIC;
		break;

	case ATMELFWL:
		if (copy_from_user(&com, rq->ifr_data, sizeof(com))) {
			rc = -EFAULT;
			break;
		}

		if (!capable(CAP_NET_ADMIN)) {
			rc = -EPERM;
			break;
		}

		if (!(new_firmware = kmalloc(com.len, GFP_KERNEL))) {
			rc = -ENOMEM;
			break;
		}

		if (copy_from_user(new_firmware, com.data, com.len)) {
			kfree(new_firmware);
			rc = -EFAULT;
			break;
		}

		kfree(priv->firmware);

		priv->firmware = new_firmware;
		priv->firmware_length = com.len;
		strncpy(priv->firmware_id, com.id, 31);
		priv->firmware_id[31] = '\0';
		break;

	case ATMELRD:
		if (copy_from_user(domain, rq->ifr_data, REGDOMAINSZ)) {
			rc = -EFAULT;
			break;
		}

		if (!capable(CAP_NET_ADMIN)) {
			rc = -EPERM;
			break;
		}

		domain[REGDOMAINSZ] = 0;
		rc = -EINVAL;
		for (i = 0; i < ARRAY_SIZE(channel_table); i++) {
			/* strcasecmp doesn't exist in the library */
			char *a = channel_table[i].name;
			char *b = domain;
			while (*a) {
				char c1 = *a++;
				char c2 = *b++;
				if (tolower(c1) != tolower(c2))
					break;
			}
			if (!*a && !*b) {
				priv->config_reg_domain = channel_table[i].reg_domain;
				rc = 0;
			}
		}

		if (rc == 0 &&  priv->station_state != STATION_STATE_DOWN)
			rc = atmel_open(dev);
		break;

	default:
		rc = -EOPNOTSUPP;
	}

	return rc;
}

struct auth_body {
	__le16 alg;
	__le16 trans_seq;
	__le16 status;
	u8 el_id;
	u8 chall_text_len;
	u8 chall_text[253];
};

static void atmel_enter_state(struct atmel_private *priv, int new_state)
{
	int old_state = priv->station_state;

	if (new_state == old_state)
		return;

	priv->station_state = new_state;

	if (new_state == STATION_STATE_READY) {
		netif_start_queue(priv->dev);
		netif_carrier_on(priv->dev);
	}

	if (old_state == STATION_STATE_READY) {
		netif_carrier_off(priv->dev);
		if (netif_running(priv->dev))
			netif_stop_queue(priv->dev);
		priv->last_beacon_timestamp = 0;
	}
}

static void atmel_scan(struct atmel_private *priv, int specific_ssid)
{
	struct {
		u8 BSSID[6];
		u8 SSID[MAX_SSID_LENGTH];
		u8 scan_type;
		u8 channel;
		__le16 BSS_type;
		__le16 min_channel_time;
		__le16 max_channel_time;
		u8 options;
		u8 SSID_size;
	} cmd;

	memset(cmd.BSSID, 0xff, 6);

	if (priv->fast_scan) {
		cmd.SSID_size = priv->SSID_size;
		memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
		cmd.min_channel_time = cpu_to_le16(10);
		cmd.max_channel_time = cpu_to_le16(50);
	} else {
		priv->BSS_list_entries = 0;
		cmd.SSID_size = 0;
		cmd.min_channel_time = cpu_to_le16(10);
		cmd.max_channel_time = cpu_to_le16(120);
	}

	cmd.options = 0;

	if (!specific_ssid)
		cmd.options |= SCAN_OPTIONS_SITE_SURVEY;

	cmd.channel = (priv->channel & 0x7f);
	cmd.scan_type = SCAN_TYPE_ACTIVE;
	cmd.BSS_type = cpu_to_le16(priv->operating_mode == IW_MODE_ADHOC ?
		BSS_TYPE_AD_HOC : BSS_TYPE_INFRASTRUCTURE);

	atmel_send_command(priv, CMD_Scan, &cmd, sizeof(cmd));

	/* This must come after all hardware access to avoid being messed up
	   by stuff happening in interrupt context after we leave STATE_DOWN */
	atmel_enter_state(priv, STATION_STATE_SCANNING);
}

static void join(struct atmel_private *priv, int type)
{
	struct {
		u8 BSSID[6];
		u8 SSID[MAX_SSID_LENGTH];
		u8 BSS_type; /* this is a short in a scan command - weird */
		u8 channel;
		__le16 timeout;
		u8 SSID_size;
		u8 reserved;
	} cmd;

	cmd.SSID_size = priv->SSID_size;
	memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
	memcpy(cmd.BSSID, priv->CurrentBSSID, 6);
	cmd.channel = (priv->channel & 0x7f);
	cmd.BSS_type = type;
	cmd.timeout = cpu_to_le16(2000);

	atmel_send_command(priv, CMD_Join, &cmd, sizeof(cmd));
}

static void start(struct atmel_private *priv, int type)
{
	struct {
		u8 BSSID[6];
		u8 SSID[MAX_SSID_LENGTH];
		u8 BSS_type;
		u8 channel;
		u8 SSID_size;
		u8 reserved[3];
	} cmd;

	cmd.SSID_size = priv->SSID_size;
	memcpy(cmd.SSID, priv->SSID, priv->SSID_size);
	memcpy(cmd.BSSID, priv->BSSID, 6);
	cmd.BSS_type = type;
	cmd.channel = (priv->channel & 0x7f);

	atmel_send_command(priv, CMD_Start, &cmd, sizeof(cmd));
}

static void handle_beacon_probe(struct atmel_private *priv, u16 capability,
				u8 channel)
{
	int rejoin = 0;
	int new = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
		SHORT_PREAMBLE : LONG_PREAMBLE;

	if (priv->preamble != new) {
		priv->preamble = new;
		rejoin = 1;
		atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, new);
	}

	if (priv->channel != channel) {
		priv->channel = channel;
		rejoin = 1;
		atmel_set_mib8(priv, Phy_Mib_Type, PHY_MIB_CHANNEL_POS, channel);
	}

	if (rejoin) {
		priv->station_is_associated = 0;
		atmel_enter_state(priv, STATION_STATE_JOINNING);

		if (priv->operating_mode == IW_MODE_INFRA)
			join(priv, BSS_TYPE_INFRASTRUCTURE);
		else
			join(priv, BSS_TYPE_AD_HOC);
	}
}

static void send_authentication_request(struct atmel_private *priv, u16 system,
					u8 *challenge, int challenge_len)
{
	struct ieee80211_hdr header;
	struct auth_body auth;

	header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
	header.duration_id = cpu_to_le16(0x8000);
	header.seq_ctrl = 0;
	memcpy(header.addr1, priv->CurrentBSSID, 6);
	memcpy(header.addr2, priv->dev->dev_addr, 6);
	memcpy(header.addr3, priv->CurrentBSSID, 6);

	if (priv->wep_is_on && priv->CurrentAuthentTransactionSeqNum != 1)
		/* no WEP for authentication frames with TrSeqNo 1 */
		header.frame_control |=  cpu_to_le16(IEEE80211_FCTL_PROTECTED);

	auth.alg = cpu_to_le16(system);

	auth.status = 0;
	auth.trans_seq = cpu_to_le16(priv->CurrentAuthentTransactionSeqNum);
	priv->ExpectedAuthentTransactionSeqNum = priv->CurrentAuthentTransactionSeqNum+1;
	priv->CurrentAuthentTransactionSeqNum += 2;

	if (challenge_len != 0)	{
		auth.el_id = 16; /* challenge_text */
		auth.chall_text_len = challenge_len;
		memcpy(auth.chall_text, challenge, challenge_len);
		atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 8 + challenge_len);
	} else {
		atmel_transmit_management_frame(priv, &header, (u8 *)&auth, 6);
	}
}

static void send_association_request(struct atmel_private *priv, int is_reassoc)
{
	u8 *ssid_el_p;
	int bodysize;
	struct ieee80211_hdr header;
	struct ass_req_format {
		__le16 capability;
		__le16 listen_interval;
		u8 ap[6]; /* nothing after here directly accessible */
		u8 ssid_el_id;
		u8 ssid_len;
		u8 ssid[MAX_SSID_LENGTH];
		u8 sup_rates_el_id;
		u8 sup_rates_len;
		u8 rates[4];
	} body;

	header.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
		(is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
	header.duration_id = cpu_to_le16(0x8000);
	header.seq_ctrl = 0;

	memcpy(header.addr1, priv->CurrentBSSID, 6);
	memcpy(header.addr2, priv->dev->dev_addr, 6);
	memcpy(header.addr3, priv->CurrentBSSID, 6);

	body.capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
	if (priv->wep_is_on)
		body.capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
	if (priv->preamble == SHORT_PREAMBLE)
		body.capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);

	body.listen_interval = cpu_to_le16(priv->listen_interval * priv->beacon_period);

	/* current AP address - only in reassoc frame */
	if (is_reassoc) {
		memcpy(body.ap, priv->CurrentBSSID, 6);
		ssid_el_p = (u8 *)&body.ssid_el_id;
		bodysize = 18 + priv->SSID_size;
	} else {
		ssid_el_p = (u8 *)&body.ap[0];
		bodysize = 12 + priv->SSID_size;
	}

	ssid_el_p[0] = WLAN_EID_SSID;
	ssid_el_p[1] = priv->SSID_size;
	memcpy(ssid_el_p + 2, priv->SSID, priv->SSID_size);
	ssid_el_p[2 + priv->SSID_size] = WLAN_EID_SUPP_RATES;
	ssid_el_p[3 + priv->SSID_size] = 4; /* len of suported rates */
	memcpy(ssid_el_p + 4 + priv->SSID_size, atmel_basic_rates, 4);

	atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
}

static int is_frame_from_current_bss(struct atmel_private *priv,
				     struct ieee80211_hdr *header)
{
	if (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FROMDS)
		return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
	else
		return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
}

static int retrieve_bss(struct atmel_private *priv)
{
	int i;
	int max_rssi = -128;
	int max_index = -1;

	if (priv->BSS_list_entries == 0)
		return -1;

	if (priv->connect_to_any_BSS) {
		/* Select a BSS with the max-RSSI but of the same type and of
		   the same WEP mode and that it is not marked as 'bad' (i.e.
		   we had previously failed to connect to this BSS with the
		   settings that we currently use) */
		priv->current_BSS = 0;
		for (i = 0; i < priv->BSS_list_entries; i++) {
			if (priv->operating_mode == priv->BSSinfo[i].BSStype &&
			    ((!priv->wep_is_on && !priv->BSSinfo[i].UsingWEP) ||
			     (priv->wep_is_on && priv->BSSinfo[i].UsingWEP)) &&
			    !(priv->BSSinfo[i].channel & 0x80)) {
				max_rssi = priv->BSSinfo[i].RSSI;
				priv->current_BSS = max_index = i;
			}
		}
		return max_index;
	}

	for (i = 0; i < priv->BSS_list_entries; i++) {
		if (priv->SSID_size == priv->BSSinfo[i].SSIDsize &&
		    memcmp(priv->SSID, priv->BSSinfo[i].SSID, priv->SSID_size) == 0 &&
		    priv->operating_mode == priv->BSSinfo[i].BSStype &&
		    atmel_validate_channel(priv, priv->BSSinfo[i].channel) == 0) {
			if (priv->BSSinfo[i].RSSI >= max_rssi) {
				max_rssi = priv->BSSinfo[i].RSSI;
				max_index = i;
			}
		}
	}
	return max_index;
}

static void store_bss_info(struct atmel_private *priv,
			   struct ieee80211_hdr *header, u16 capability,
			   u16 beacon_period, u8 channel, u8 rssi, u8 ssid_len,
			   u8 *ssid, int is_beacon)
{
	u8 *bss = capability & WLAN_CAPABILITY_ESS ? header->addr2 : header->addr3;
	int i, index;

	for (index = -1, i = 0; i < priv->BSS_list_entries; i++)
		if (memcmp(bss, priv->BSSinfo[i].BSSID, 6) == 0)
			index = i;

	/* If we process a probe and an entry from this BSS exists
	   we will update the BSS entry with the info from this BSS.
	   If we process a beacon we will only update RSSI */

	if (index == -1) {
		if (priv->BSS_list_entries == MAX_BSS_ENTRIES)
			return;
		index = priv->BSS_list_entries++;
		memcpy(priv->BSSinfo[index].BSSID, bss, 6);
		priv->BSSinfo[index].RSSI = rssi;
	} else {
		if (rssi > priv->BSSinfo[index].RSSI)
			priv->BSSinfo[index].RSSI = rssi;
		if (is_beacon)
			return;
	}

	priv->BSSinfo[index].channel = channel;
	priv->BSSinfo[index].beacon_period = beacon_period;
	priv->BSSinfo[index].UsingWEP = capability & WLAN_CAPABILITY_PRIVACY;
	memcpy(priv->BSSinfo[index].SSID, ssid, ssid_len);
	priv->BSSinfo[index].SSIDsize = ssid_len;

	if (capability & WLAN_CAPABILITY_IBSS)
		priv->BSSinfo[index].BSStype = IW_MODE_ADHOC;
	else if (capability & WLAN_CAPABILITY_ESS)
		priv->BSSinfo[index].BSStype = IW_MODE_INFRA;

	priv->BSSinfo[index].preamble = capability & WLAN_CAPABILITY_SHORT_PREAMBLE ?
		SHORT_PREAMBLE : LONG_PREAMBLE;
}

static void authenticate(struct atmel_private *priv, u16 frame_len)
{
	struct auth_body *auth = (struct auth_body *)priv->rx_buf;
	u16 status = le16_to_cpu(auth->status);
	u16 trans_seq_no = le16_to_cpu(auth->trans_seq);
	u16 system = le16_to_cpu(auth->alg);

	if (status == WLAN_STATUS_SUCCESS && !priv->wep_is_on) {
		/* no WEP */
		if (priv->station_was_associated) {
			atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
			send_association_request(priv, 1);
			return;
		} else {
			atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
			send_association_request(priv, 0);
			return;
		}
	}

	if (status == WLAN_STATUS_SUCCESS && priv->wep_is_on) {
		int should_associate = 0;
		/* WEP */
		if (trans_seq_no != priv->ExpectedAuthentTransactionSeqNum)
			return;

		if (system == WLAN_AUTH_OPEN) {
			if (trans_seq_no == 0x0002) {
				should_associate = 1;
			}
		} else if (system == WLAN_AUTH_SHARED_KEY) {
			if (trans_seq_no == 0x0002 &&
			    auth->el_id == WLAN_EID_CHALLENGE) {
				send_authentication_request(priv, system, auth->chall_text, auth->chall_text_len);
				return;
			} else if (trans_seq_no == 0x0004) {
				should_associate = 1;
			}
		}

		if (should_associate) {
			if (priv->station_was_associated) {
				atmel_enter_state(priv, STATION_STATE_REASSOCIATING);
				send_association_request(priv, 1);
				return;
			} else {
				atmel_enter_state(priv, STATION_STATE_ASSOCIATING);
				send_association_request(priv, 0);
				return;
			}
		}
	}

	if (status == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
		/* Flip back and forth between WEP auth modes until the max
		 * authentication tries has been exceeded.
		 */
		if (system == WLAN_AUTH_OPEN) {
			priv->CurrentAuthentTransactionSeqNum = 0x001;
			priv->exclude_unencrypted = 1;
			send_authentication_request(priv, WLAN_AUTH_SHARED_KEY, NULL, 0);
			return;
		} else if (system == WLAN_AUTH_SHARED_KEY
			   && priv->wep_is_on) {
			priv->CurrentAuthentTransactionSeqNum = 0x001;
			priv->exclude_unencrypted = 0;
			send_authentication_request(priv, WLAN_AUTH_OPEN, NULL, 0);
			return;
		} else if (priv->connect_to_any_BSS) {
			int bss_index;

			priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;

			if ((bss_index  = retrieve_bss(priv)) != -1) {
				atmel_join_bss(priv, bss_index);
				return;
			}
		}
	}

	priv->AuthenticationRequestRetryCnt = 0;
	atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
	priv->station_is_associated = 0;
}

static void associate(struct atmel_private *priv, u16 frame_len, u16 subtype)
{
	struct ass_resp_format {
		__le16 capability;
		__le16 status;
		__le16 ass_id;
		u8 el_id;
		u8 length;
		u8 rates[4];
	} *ass_resp = (struct ass_resp_format *)priv->rx_buf;

	u16 status = le16_to_cpu(ass_resp->status);
	u16 ass_id = le16_to_cpu(ass_resp->ass_id);
	u16 rates_len = ass_resp->length > 4 ? 4 : ass_resp->length;

	union iwreq_data wrqu;

	if (frame_len < 8 + rates_len)
		return;

	if (status == WLAN_STATUS_SUCCESS) {
		if (subtype == IEEE80211_STYPE_ASSOC_RESP)
			priv->AssociationRequestRetryCnt = 0;
		else
			priv->ReAssociationRequestRetryCnt = 0;

		atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
				MAC_MGMT_MIB_STATION_ID_POS, ass_id & 0x3fff);
		atmel_set_mib(priv, Phy_Mib_Type,
			      PHY_MIB_RATE_SET_POS, ass_resp->rates, rates_len);
		if (priv->power_mode == 0) {
			priv->listen_interval = 1;
			atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
				       MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
			atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
					MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
		} else {
			priv->listen_interval = 2;
			atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
				       MAC_MGMT_MIB_PS_MODE_POS,  PS_MODE);
			atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
					MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 2);
		}

		priv->station_is_associated = 1;
		priv->station_was_associated = 1;
		atmel_enter_state(priv, STATION_STATE_READY);

		/* Send association event to userspace */
		wrqu.data.length = 0;
		wrqu.data.flags = 0;
		memcpy(wrqu.ap_addr.sa_data, priv->CurrentBSSID, ETH_ALEN);
		wrqu.ap_addr.sa_family = ARPHRD_ETHER;
		wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);

		return;
	}

	if (subtype == IEEE80211_STYPE_ASSOC_RESP &&
	    status != WLAN_STATUS_ASSOC_DENIED_RATES &&
	    status != WLAN_STATUS_CAPS_UNSUPPORTED &&
	    priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
		mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
		priv->AssociationRequestRetryCnt++;
		send_association_request(priv, 0);
		return;
	}

	if (subtype == IEEE80211_STYPE_REASSOC_RESP &&
	    status != WLAN_STATUS_ASSOC_DENIED_RATES &&
	    status != WLAN_STATUS_CAPS_UNSUPPORTED &&
	    priv->AssociationRequestRetryCnt < MAX_ASSOCIATION_RETRIES) {
		mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
		priv->ReAssociationRequestRetryCnt++;
		send_association_request(priv, 1);
		return;
	}

	atmel_enter_state(priv,  STATION_STATE_MGMT_ERROR);
	priv->station_is_associated = 0;

	if (priv->connect_to_any_BSS) {
		int bss_index;
		priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;

		if ((bss_index = retrieve_bss(priv)) != -1)
			atmel_join_bss(priv, bss_index);
	}
}

static void atmel_join_bss(struct atmel_private *priv, int bss_index)
{
	struct bss_info *bss =  &priv->BSSinfo[bss_index];

	memcpy(priv->CurrentBSSID, bss->BSSID, 6);
	memcpy(priv->SSID, bss->SSID, priv->SSID_size = bss->SSIDsize);

	/* The WPA stuff cares about the current AP address */
	if (priv->use_wpa)
		build_wpa_mib(priv);

	/* When switching to AdHoc turn OFF Power Save if needed */

	if (bss->BSStype == IW_MODE_ADHOC &&
	    priv->operating_mode != IW_MODE_ADHOC &&
	    priv->power_mode) {
		priv->power_mode = 0;
		priv->listen_interval = 1;
		atmel_set_mib8(priv, Mac_Mgmt_Mib_Type,
			       MAC_MGMT_MIB_PS_MODE_POS,  ACTIVE_MODE);
		atmel_set_mib16(priv, Mac_Mgmt_Mib_Type,
				MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
	}

	priv->operating_mode = bss->BSStype;
	priv->channel = bss->channel & 0x7f;
	priv->beacon_period = bss->beacon_period;

	if (priv->preamble != bss->preamble) {
		priv->preamble = bss->preamble;
		atmel_set_mib8(priv, Local_Mib_Type,
			       LOCAL_MIB_PREAMBLE_TYPE, bss->preamble);
	}

	if (!priv->wep_is_on && bss->UsingWEP) {
		atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
		priv->station_is_associated = 0;
		return;
	}

	if (priv->wep_is_on && !bss->UsingWEP) {
		atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
		priv->station_is_associated = 0;
		return;
	}

	atmel_enter_state(priv, STATION_STATE_JOINNING);

	if (priv->operating_mode == IW_MODE_INFRA)
		join(priv, BSS_TYPE_INFRASTRUCTURE);
	else
		join(priv, BSS_TYPE_AD_HOC);
}

static void restart_search(struct atmel_private *priv)
{
	int bss_index;

	if (!priv->connect_to_any_BSS) {
		atmel_scan(priv, 1);
	} else {
		priv->BSSinfo[(int)(priv->current_BSS)].channel |= 0x80;

		if ((bss_index = retrieve_bss(priv)) != -1)
			atmel_join_bss(priv, bss_index);
		else
			atmel_scan(priv, 0);
	}
}

static void smooth_rssi(struct atmel_private *priv, u8 rssi)
{
	u8 old = priv->wstats.qual.level;
	u8 max_rssi = 42; /* 502-rmfd-revd max by experiment, default for now */

	switch (priv->firmware_type) {
	case ATMEL_FW_TYPE_502E:
		max_rssi = 63; /* 502-rmfd-reve max by experiment */
		break;
	default:
		break;
	}

	rssi = rssi * 100 / max_rssi;
	if ((rssi + old) % 2)
		priv->wstats.qual.level = (rssi + old) / 2 + 1;
	else
		priv->wstats.qual.level = (rssi + old) / 2;
	priv->wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
	priv->wstats.qual.updated &= ~IW_QUAL_LEVEL_INVALID;
}

static void atmel_smooth_qual(struct atmel_private *priv)
{
	unsigned long time_diff = (jiffies - priv->last_qual) / HZ;
	while (time_diff--) {
		priv->last_qual += HZ;
		priv->wstats.qual.qual = priv->wstats.qual.qual / 2;
		priv->wstats.qual.qual +=
			priv->beacons_this_sec * priv->beacon_period * (priv->wstats.qual.level + 100) / 4000;
		priv->beacons_this_sec = 0;
	}
	priv->wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
	priv->wstats.qual.updated &= ~IW_QUAL_QUAL_INVALID;
}

/* deals with incoming management frames. */
static void atmel_management_frame(struct atmel_private *priv,
				   struct ieee80211_hdr *header,
				   u16 frame_len, u8 rssi)
{
	u16 subtype;

	subtype = le16_to_cpu(header->frame_control) & IEEE80211_FCTL_STYPE;
	switch (subtype) {
	case IEEE80211_STYPE_BEACON:
	case IEEE80211_STYPE_PROBE_RESP:

		/* beacon frame has multiple variable-length fields -
		   never let an engineer loose with a data structure design. */
		{
			struct beacon_format {
				__le64 timestamp;
				__le16 interval;
				__le16 capability;
				u8 ssid_el_id;
				u8 ssid_length;
				/* ssid here */
				u8 rates_el_id;
				u8 rates_length;
				/* rates here */
				u8 ds_el_id;
				u8 ds_length;
				/* ds here */
			} *beacon = (struct beacon_format *)priv->rx_buf;

			u8 channel, rates_length, ssid_length;
			u64 timestamp = le64_to_cpu(beacon->timestamp);
			u16 beacon_interval = le16_to_cpu(beacon->interval);
			u16 capability = le16_to_cpu(beacon->capability);
			u8 *beaconp = priv->rx_buf;
			ssid_length = beacon->ssid_length;
			/* this blows chunks. */
			if (frame_len < 14 || frame_len < ssid_length + 15)
				return;
			rates_length = beaconp[beacon->ssid_length + 15];
			if (frame_len < ssid_length + rates_length + 18)
				return;
			if (ssid_length >  MAX_SSID_LENGTH)
				return;
			channel = beaconp[ssid_length + rates_length + 18];

			if (priv->station_state == STATION_STATE_READY) {
				smooth_rssi(priv, rssi);
				if (is_frame_from_current_bss(priv, header)) {
					priv->beacons_this_sec++;
					atmel_smooth_qual(priv);
					if (priv->last_beacon_timestamp) {
						/* Note truncate this to 32 bits - kernel can't divide a long long */
						u32 beacon_delay = timestamp - priv->last_beacon_timestamp;
						int beacons = beacon_delay / (beacon_interval * 1000);
						if (beacons > 1)
							priv->wstats.miss.beacon += beacons - 1;
					}
					priv->last_beacon_timestamp = timestamp;
					handle_beacon_probe(priv, capability, channel);
				}
			}

			if (priv->station_state == STATION_STATE_SCANNING)
				store_bss_info(priv, header, capability,
					       beacon_interval, channel, rssi,
					       ssid_length,
					       &beacon->rates_el_id,
					       subtype == IEEE80211_STYPE_BEACON);
		}
		break;

	case IEEE80211_STYPE_AUTH:

		if (priv->station_state == STATION_STATE_AUTHENTICATING)
			authenticate(priv, frame_len);

		break;

	case IEEE80211_STYPE_ASSOC_RESP:
	case IEEE80211_STYPE_REASSOC_RESP:

		if (priv->station_state == STATION_STATE_ASSOCIATING ||
		    priv->station_state == STATION_STATE_REASSOCIATING)
			associate(priv, frame_len, subtype);

		break;

	case IEEE80211_STYPE_DISASSOC:
		if (priv->station_is_associated &&
		    priv->operating_mode == IW_MODE_INFRA &&
		    is_frame_from_current_bss(priv, header)) {
			priv->station_was_associated = 0;
			priv->station_is_associated = 0;

			atmel_enter_state(priv, STATION_STATE_JOINNING);
			join(priv, BSS_TYPE_INFRASTRUCTURE);
		}

		break;

	case IEEE80211_STYPE_DEAUTH:
		if (priv->operating_mode == IW_MODE_INFRA &&
		    is_frame_from_current_bss(priv, header)) {
			priv->station_was_associated = 0;

			atmel_enter_state(priv, STATION_STATE_JOINNING);
			join(priv, BSS_TYPE_INFRASTRUCTURE);
		}

		break;
	}
}

/* run when timer expires */
static void atmel_management_timer(u_long a)
{
	struct net_device *dev = (struct net_device *) a;
	struct atmel_private *priv = netdev_priv(dev);
	unsigned long flags;

	/* Check if the card has been yanked. */
	if (priv->card && priv->present_callback &&
		!(*priv->present_callback)(priv->card))
		return;

	spin_lock_irqsave(&priv->irqlock, flags);

	switch (priv->station_state) {

	case STATION_STATE_AUTHENTICATING:
		if (priv->AuthenticationRequestRetryCnt >= MAX_AUTHENTICATION_RETRIES) {
			atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
			priv->station_is_associated = 0;
			priv->AuthenticationRequestRetryCnt = 0;
			restart_search(priv);
		} else {
			int auth = WLAN_AUTH_OPEN;
			priv->AuthenticationRequestRetryCnt++;
			priv->CurrentAuthentTransactionSeqNum = 0x0001;
			mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
			if (priv->wep_is_on && priv->exclude_unencrypted)
				auth = WLAN_AUTH_SHARED_KEY;
			send_authentication_request(priv, auth, NULL, 0);
	  }
	  break;

	case STATION_STATE_ASSOCIATING:
		if (priv->AssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
			atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
			priv->station_is_associated = 0;
			priv->AssociationRequestRetryCnt = 0;
			restart_search(priv);
		} else {
			priv->AssociationRequestRetryCnt++;
			mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
			send_association_request(priv, 0);
		}
	  break;

	case STATION_STATE_REASSOCIATING:
		if (priv->ReAssociationRequestRetryCnt == MAX_ASSOCIATION_RETRIES) {
			atmel_enter_state(priv, STATION_STATE_MGMT_ERROR);
			priv->station_is_associated = 0;
			priv->ReAssociationRequestRetryCnt = 0;
			restart_search(priv);
		} else {
			priv->ReAssociationRequestRetryCnt++;
			mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
			send_association_request(priv, 1);
		}
		break;

	default:
		break;
	}

	spin_unlock_irqrestore(&priv->irqlock, flags);
}

static void atmel_command_irq(struct atmel_private *priv)
{
	u8 status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
	u8 command = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET));
	int fast_scan;
	union iwreq_data wrqu;

	if (status == CMD_STATUS_IDLE ||
	    status == CMD_STATUS_IN_PROGRESS)
		return;

	switch (command) {
	case CMD_Start:
		if (status == CMD_STATUS_COMPLETE) {
			priv->station_was_associated = priv->station_is_associated;
			atmel_get_mib(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_BSSID_POS,
				      (u8 *)priv->CurrentBSSID, 6);
			atmel_enter_state(priv, STATION_STATE_READY);
		}
		break;

	case CMD_Scan:
		fast_scan = priv->fast_scan;
		priv->fast_scan = 0;

		if (status != CMD_STATUS_COMPLETE) {
			atmel_scan(priv, 1);
		} else {
			int bss_index = retrieve_bss(priv);
			int notify_scan_complete = 1;
			if (bss_index != -1) {
				atmel_join_bss(priv, bss_index);
			} else if (priv->operating_mode == IW_MODE_ADHOC &&
				   priv->SSID_size != 0) {
				start(priv, BSS_TYPE_AD_HOC);
			} else {
				priv->fast_scan = !fast_scan;
				atmel_scan(priv, 1);
				notify_scan_complete = 0;
			}
			priv->site_survey_state = SITE_SURVEY_COMPLETED;
			if (notify_scan_complete) {
				wrqu.data.length = 0;
				wrqu.data.flags = 0;
				wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
			}
		}
		break;

	case CMD_SiteSurvey:
		priv->fast_scan = 0;

		if (status != CMD_STATUS_COMPLETE)
			return;

		priv->site_survey_state = SITE_SURVEY_COMPLETED;
		if (priv->station_is_associated) {
			atmel_enter_state(priv, STATION_STATE_READY);
			wrqu.data.length = 0;
			wrqu.data.flags = 0;
			wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
		} else {
			atmel_scan(priv, 1);
		}
		break;

	case CMD_Join:
		if (status == CMD_STATUS_COMPLETE) {
			if (priv->operating_mode == IW_MODE_ADHOC) {
				priv->station_was_associated = priv->station_is_associated;
				atmel_enter_state(priv, STATION_STATE_READY);
			} else {
				int auth = WLAN_AUTH_OPEN;
				priv->AuthenticationRequestRetryCnt = 0;
				atmel_enter_state(priv, STATION_STATE_AUTHENTICATING);

				mod_timer(&priv->management_timer, jiffies + MGMT_JIFFIES);
				priv->CurrentAuthentTransactionSeqNum = 0x0001;
				if (priv->wep_is_on && priv->exclude_unencrypted)
					auth = WLAN_AUTH_SHARED_KEY;
				send_authentication_request(priv, auth, NULL, 0);
			}
			return;
		}

		atmel_scan(priv, 1);
	}
}

static int atmel_wakeup_firmware(struct atmel_private *priv)
{
	struct host_info_struct *iface = &priv->host_info;
	u16 mr1, mr3;
	int i;

	if (priv->card_type == CARD_TYPE_SPI_FLASH)
		atmel_set_gcr(priv->dev, GCR_REMAP);

	/* wake up on-board processor */
	atmel_clear_gcr(priv->dev, 0x0040);
	atmel_write16(priv->dev, BSR, BSS_SRAM);

	if (priv->card_type == CARD_TYPE_SPI_FLASH)
		mdelay(100);

	/* and wait for it */
	for (i = LOOP_RETRY_LIMIT; i; i--) {
		mr1 = atmel_read16(priv->dev, MR1);
		mr3 = atmel_read16(priv->dev, MR3);

		if (mr3 & MAC_BOOT_COMPLETE)
			break;
		if (mr1 & MAC_BOOT_COMPLETE &&
		    priv->bus_type == BUS_TYPE_PCCARD)
			break;
	}

	if (i == 0) {
		printk(KERN_ALERT "%s: MAC failed to boot.\n", priv->dev->name);
		return -EIO;
	}

	if ((priv->host_info_base = atmel_read16(priv->dev, MR2)) == 0xffff) {
		printk(KERN_ALERT "%s: card missing.\n", priv->dev->name);
		return -ENODEV;
	}

	/* now check for completion of MAC initialization through
	   the FunCtrl field of the IFACE, poll MR1 to detect completion of
	   MAC initialization, check completion status, set interrupt mask,
	   enables interrupts and calls Tx and Rx initialization functions */

	atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET), FUNC_CTRL_INIT_COMPLETE);

	for (i = LOOP_RETRY_LIMIT; i; i--) {
		mr1 = atmel_read16(priv->dev, MR1);
		mr3 = atmel_read16(priv->dev, MR3);

		if (mr3 & MAC_INIT_COMPLETE)
			break;
		if (mr1 & MAC_INIT_COMPLETE &&
		    priv->bus_type == BUS_TYPE_PCCARD)
			break;
	}

	if (i == 0) {
		printk(KERN_ALERT "%s: MAC failed to initialise.\n",
				priv->dev->name);
		return -EIO;
	}

	/* Check for MAC_INIT_OK only on the register that the MAC_INIT_OK was set */
	if ((mr3 & MAC_INIT_COMPLETE) &&
	    !(atmel_read16(priv->dev, MR3) & MAC_INIT_OK)) {
		printk(KERN_ALERT "%s: MAC failed MR3 self-test.\n", priv->dev->name);
		return -EIO;
	}
	if ((mr1 & MAC_INIT_COMPLETE) &&
	    !(atmel_read16(priv->dev, MR1) & MAC_INIT_OK)) {
		printk(KERN_ALERT "%s: MAC failed MR1 self-test.\n", priv->dev->name);
		return -EIO;
	}

	atmel_copy_to_host(priv->dev, (unsigned char *)iface,
			   priv->host_info_base, sizeof(*iface));

	iface->tx_buff_pos = le16_to_cpu(iface->tx_buff_pos);
	iface->tx_buff_size = le16_to_cpu(iface->tx_buff_size);
	iface->tx_desc_pos = le16_to_cpu(iface->tx_desc_pos);
	iface->tx_desc_count = le16_to_cpu(iface->tx_desc_count);
	iface->rx_buff_pos = le16_to_cpu(iface->rx_buff_pos);
	iface->rx_buff_size = le16_to_cpu(iface->rx_buff_size);
	iface->rx_desc_pos = le16_to_cpu(iface->rx_desc_pos);
	iface->rx_desc_count = le16_to_cpu(iface->rx_desc_count);
	iface->build_version = le16_to_cpu(iface->build_version);
	iface->command_pos = le16_to_cpu(iface->command_pos);
	iface->major_version = le16_to_cpu(iface->major_version);
	iface->minor_version = le16_to_cpu(iface->minor_version);
	iface->func_ctrl = le16_to_cpu(iface->func_ctrl);
	iface->mac_status = le16_to_cpu(iface->mac_status);

	return 0;
}

/* determine type of memory and MAC address */
static int probe_atmel_card(struct net_device *dev)
{
	int rc = 0;
	struct atmel_private *priv = netdev_priv(dev);

	/* reset pccard */
	if (priv->bus_type == BUS_TYPE_PCCARD)
		atmel_write16(dev, GCR, 0x0060);

	atmel_write16(dev, GCR, 0x0040);
	mdelay(500);

	if (atmel_read16(dev, MR2) == 0) {
		/* No stored firmware so load a small stub which just
		   tells us the MAC address */
		int i;
		priv->card_type = CARD_TYPE_EEPROM;
		atmel_write16(dev, BSR, BSS_IRAM);
		atmel_copy_to_card(dev, 0, mac_reader, sizeof(mac_reader));
		atmel_set_gcr(dev, GCR_REMAP);
		atmel_clear_gcr(priv->dev, 0x0040);
		atmel_write16(dev, BSR, BSS_SRAM);
		for (i = LOOP_RETRY_LIMIT; i; i--)
			if (atmel_read16(dev, MR3) & MAC_BOOT_COMPLETE)
				break;
		if (i == 0) {
			printk(KERN_ALERT "%s: MAC failed to boot MAC address reader.\n", dev->name);
		} else {
			atmel_copy_to_host(dev, dev->dev_addr, atmel_read16(dev, MR2), 6);
			/* got address, now squash it again until the network
			   interface is opened */
			if (priv->bus_type == BUS_TYPE_PCCARD)
				atmel_write16(dev, GCR, 0x0060);
			atmel_write16(dev, GCR, 0x0040);
			rc = 1;
		}
	} else if (atmel_read16(dev, MR4) == 0) {
		/* Mac address easy in this case. */
		priv->card_type = CARD_TYPE_PARALLEL_FLASH;
		atmel_write16(dev,  BSR, 1);
		atmel_copy_to_host(dev, dev->dev_addr, 0xc000, 6);
		atmel_write16(dev,  BSR, 0x200);
		rc = 1;
	} else {
		/* Standard firmware in flash, boot it up and ask
		   for the Mac Address */
		priv->card_type = CARD_TYPE_SPI_FLASH;
		if (atmel_wakeup_firmware(priv) == 0) {
			atmel_get_mib(priv, Mac_Address_Mib_Type, 0, dev->dev_addr, 6);

			/* got address, now squash it again until the network
			   interface is opened */
			if (priv->bus_type == BUS_TYPE_PCCARD)
				atmel_write16(dev, GCR, 0x0060);
			atmel_write16(dev, GCR, 0x0040);
			rc = 1;
		}
	}

	if (rc) {
		if (dev->dev_addr[0] == 0xFF) {
			static const u8 default_mac[] = {
				0x00, 0x04, 0x25, 0x00, 0x00, 0x00
			};
			printk(KERN_ALERT "%s: *** Invalid MAC address. UPGRADE Firmware ****\n", dev->name);
			memcpy(dev->dev_addr, default_mac, 6);
		}
	}

	return rc;
}

/* Move the encyption information on the MIB structure.
   This routine is for the pre-WPA firmware: later firmware has
   a different format MIB and a different routine. */
static void build_wep_mib(struct atmel_private *priv)
{
	struct { /* NB this is matched to the hardware, don't change. */
		u8 wep_is_on;
		u8 default_key; /* 0..3 */
		u8 reserved;
		u8 exclude_unencrypted;

		u32 WEPICV_error_count;
		u32 WEP_excluded_count;

		u8 wep_keys[MAX_ENCRYPTION_KEYS][13];
		u8 encryption_level; /* 0, 1, 2 */
		u8 reserved2[3];
	} mib;
	int i;

	mib.wep_is_on = priv->wep_is_on;
	if (priv->wep_is_on) {
		if (priv->wep_key_len[priv->default_key] > 5)
			mib.encryption_level = 2;
		else
			mib.encryption_level = 1;
	} else {
		mib.encryption_level = 0;
	}

	mib.default_key = priv->default_key;
	mib.exclude_unencrypted = priv->exclude_unencrypted;

	for (i = 0; i < MAX_ENCRYPTION_KEYS; i++)
		memcpy(mib.wep_keys[i], priv->wep_keys[i], 13);

	atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
}

static void build_wpa_mib(struct atmel_private *priv)
{
	/* This is for the later (WPA enabled) firmware. */

	struct { /* NB this is matched to the hardware, don't change. */
		u8 cipher_default_key_value[MAX_ENCRYPTION_KEYS][MAX_ENCRYPTION_KEY_SIZE];
		u8 receiver_address[6];
		u8 wep_is_on;
		u8 default_key; /* 0..3 */
		u8 group_key;
		u8 exclude_unencrypted;
		u8 encryption_type;
		u8 reserved;

		u32 WEPICV_error_count;
		u32 WEP_excluded_count;

		u8 key_RSC[4][8];
	} mib;

	int i;

	mib.wep_is_on = priv->wep_is_on;
	mib.exclude_unencrypted = priv->exclude_unencrypted;
	memcpy(mib.receiver_address, priv->CurrentBSSID, 6);

	/* zero all the keys before adding in valid ones. */
	memset(mib.cipher_default_key_value, 0, sizeof(mib.cipher_default_key_value));

	if (priv->wep_is_on) {
		/* There's a comment in the Atmel code to the effect that this
		   is only valid when still using WEP, it may need to be set to
		   something to use WPA */
		memset(mib.key_RSC, 0, sizeof(mib.key_RSC));

		mib.default_key = mib.group_key = 255;
		for (i = 0; i < MAX_ENCRYPTION_KEYS; i++) {
			if (priv->wep_key_len[i] > 0) {
				memcpy(mib.cipher_default_key_value[i], priv->wep_keys[i], MAX_ENCRYPTION_KEY_SIZE);
				if (i == priv->default_key) {
					mib.default_key = i;
					mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 7;
					mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->pairwise_cipher_suite;
				} else {
					mib.group_key = i;
					priv->group_cipher_suite = priv->pairwise_cipher_suite;
					mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-1] = 1;
					mib.cipher_default_key_value[i][MAX_ENCRYPTION_KEY_SIZE-2] = priv->group_cipher_suite;
				}
			}
		}
		if (mib.default_key == 255)
			mib.default_key = mib.group_key != 255 ? mib.group_key : 0;
		if (mib.group_key == 255)
			mib.group_key = mib.default_key;

	}

	atmel_set_mib(priv, Mac_Wep_Mib_Type, 0, (u8 *)&mib, sizeof(mib));
}

static int reset_atmel_card(struct net_device *dev)
{
	/* do everything necessary to wake up the hardware, including
	   waiting for the lightning strike and throwing the knife switch....

	   set all the Mib values which matter in the card to match
	   their settings in the atmel_private structure. Some of these
	   can be altered on the fly, but many (WEP, infrastucture or ad-hoc)
	   can only be changed by tearing down the world and coming back through
	   here.

	   This routine is also responsible for initialising some
	   hardware-specific fields in the atmel_private structure,
	   including a copy of the firmware's hostinfo structure
	   which is the route into the rest of the firmware datastructures. */

	struct atmel_private *priv = netdev_priv(dev);
	u8 configuration;
	int old_state = priv->station_state;
	int err = 0;

	/* data to add to the firmware names, in priority order
	   this implemenents firmware versioning */

	static char *firmware_modifier[] = {
		"-wpa",
		"",
		NULL
	};

	/* reset pccard */
	if (priv->bus_type == BUS_TYPE_PCCARD)
		atmel_write16(priv->dev, GCR, 0x0060);

	/* stop card , disable interrupts */
	atmel_write16(priv->dev, GCR, 0x0040);

	if (priv->card_type == CARD_TYPE_EEPROM) {
		/* copy in firmware if needed */
		const struct firmware *fw_entry = NULL;
		const unsigned char *fw;
		int len = priv->firmware_length;
		if (!(fw = priv->firmware)) {
			if (priv->firmware_type == ATMEL_FW_TYPE_NONE) {
				if (strlen(priv->firmware_id) == 0) {
					printk(KERN_INFO
					       "%s: card type is unknown: assuming at76c502 firmware is OK.\n",
					       dev->name);
					printk(KERN_INFO
					       "%s: if not, use the firmware= module parameter.\n",
					       dev->name);
					strcpy(priv->firmware_id, "atmel_at76c502.bin");
				}
				err = request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev);
				if (err != 0) {
					printk(KERN_ALERT
					       "%s: firmware %s is missing, cannot continue.\n",
					       dev->name, priv->firmware_id);
					return err;
				}
			} else {
				int fw_index = 0;
				int success = 0;

				/* get firmware filename entry based on firmware type ID */
				while (fw_table[fw_index].fw_type != priv->firmware_type
						&& fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE)
					fw_index++;

				/* construct the actual firmware file name */
				if (fw_table[fw_index].fw_type != ATMEL_FW_TYPE_NONE) {
					int i;
					for (i = 0; firmware_modifier[i]; i++) {
						snprintf(priv->firmware_id, 32, "%s%s.%s", fw_table[fw_index].fw_file,
							firmware_modifier[i], fw_table[fw_index].fw_file_ext);
						priv->firmware_id[31] = '\0';
						if (request_firmware(&fw_entry, priv->firmware_id, priv->sys_dev) == 0) {
							success = 1;
							break;
						}
					}
				}
				if (!success) {
					printk(KERN_ALERT
					       "%s: firmware %s is missing, cannot start.\n",
					       dev->name, priv->firmware_id);
					priv->firmware_id[0] = '\0';
					return -ENOENT;
				}
			}

			fw = fw_entry->data;
			len = fw_entry->size;
		}

		if (len <= 0x6000) {
			atmel_write16(priv->dev, BSR, BSS_IRAM);
			atmel_copy_to_card(priv->dev, 0, fw, len);
			atmel_set_gcr(priv->dev, GCR_REMAP);
		} else {
			/* Remap */
			atmel_set_gcr(priv->dev, GCR_REMAP);
			atmel_write16(priv->dev, BSR, BSS_IRAM);
			atmel_copy_to_card(priv->dev, 0, fw, 0x6000);
			atmel_write16(priv->dev, BSR, 0x2ff);
			atmel_copy_to_card(priv->dev, 0x8000, &fw[0x6000], len - 0x6000);
		}

		if (fw_entry)
			release_firmware(fw_entry);
	}

	err = atmel_wakeup_firmware(priv);
	if (err != 0)
		return err;

	/* Check the version and set the correct flag for wpa stuff,
	   old and new firmware is incompatible.
	   The pre-wpa 3com firmware reports major version 5,
	   the wpa 3com firmware is major version 4 and doesn't need
	   the 3com broken-ness filter. */
	priv->use_wpa = (priv->host_info.major_version == 4);
	priv->radio_on_broken = (priv->host_info.major_version == 5);

	/* unmask all irq sources */
	atmel_wmem8(priv, atmel_hi(priv, IFACE_INT_MASK_OFFSET), 0xff);

	/* int Tx system and enable Tx */
	atmel_wmem8(priv, atmel_tx(priv, TX_DESC_FLAGS_OFFSET, 0), 0);
	atmel_wmem32(priv, atmel_tx(priv, TX_DESC_NEXT_OFFSET, 0), 0x80000000L);
	atmel_wmem16(priv, atmel_tx(priv, TX_DESC_POS_OFFSET, 0), 0);
	atmel_wmem16(priv, atmel_tx(priv, TX_DESC_SIZE_OFFSET, 0), 0);

	priv->tx_desc_free = priv->host_info.tx_desc_count;
	priv->tx_desc_head = 0;
	priv->tx_desc_tail = 0;
	priv->tx_desc_previous = 0;
	priv->tx_free_mem = priv->host_info.tx_buff_size;
	priv->tx_buff_head = 0;
	priv->tx_buff_tail = 0;

	configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
	atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
				   configuration | FUNC_CTRL_TxENABLE);

	/* init Rx system and enable */
	priv->rx_desc_head = 0;

	configuration = atmel_rmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET));
	atmel_wmem8(priv, atmel_hi(priv, IFACE_FUNC_CTRL_OFFSET),
				   configuration | FUNC_CTRL_RxENABLE);

	if (!priv->radio_on_broken) {
		if (atmel_send_command_wait(priv, CMD_EnableRadio, NULL, 0) ==
		    CMD_STATUS_REJECTED_RADIO_OFF) {
			printk(KERN_INFO "%s: cannot turn the radio on.\n",
			       dev->name);
			return -EIO;
		}
	}

	/* set up enough MIB values to run. */
	atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_AUTO_TX_RATE_POS, priv->auto_tx_rate);
	atmel_set_mib8(priv, Local_Mib_Type,  LOCAL_MIB_TX_PROMISCUOUS_POS,  PROM_MODE_OFF);
	atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_RTS_THRESHOLD_POS, priv->rts_threshold);
	atmel_set_mib16(priv, Mac_Mib_Type, MAC_MIB_FRAG_THRESHOLD_POS, priv->frag_threshold);
	atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_SHORT_RETRY_POS, priv->short_retry);
	atmel_set_mib8(priv, Mac_Mib_Type, MAC_MIB_LONG_RETRY_POS, priv->long_retry);
	atmel_set_mib8(priv, Local_Mib_Type, LOCAL_MIB_PREAMBLE_TYPE, priv->preamble);
	atmel_set_mib(priv, Mac_Address_Mib_Type, MAC_ADDR_MIB_MAC_ADDR_POS,
		      priv->dev->dev_addr, 6);
	atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_PS_MODE_POS, ACTIVE_MODE);
	atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_LISTEN_INTERVAL_POS, 1);
	atmel_set_mib16(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_BEACON_PER_POS, priv->default_beacon_period);
	atmel_set_mib(priv, Phy_Mib_Type, PHY_MIB_RATE_SET_POS, atmel_basic_rates, 4);
	atmel_set_mib8(priv, Mac_Mgmt_Mib_Type, MAC_MGMT_MIB_CUR_PRIVACY_POS, priv->wep_is_on);
	if (priv->use_wpa)
		build_wpa_mib(priv);
	else
		build_wep_mib(priv);

	if (old_state == STATION_STATE_READY) {
		union iwreq_data wrqu;

		wrqu.data.length = 0;
		wrqu.data.flags = 0;
		wrqu.ap_addr.sa_family = ARPHRD_ETHER;
		memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
		wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
	}

	return 0;
}

static void atmel_send_command(struct atmel_private *priv, int command,
			       void *cmd, int cmd_size)
{
	if (cmd)
		atmel_copy_to_card(priv->dev, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET),
				   cmd, cmd_size);

	atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_COMMAND_OFFSET), command);
	atmel_wmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET), 0);
}

static int atmel_send_command_wait(struct atmel_private *priv, int command,
				   void *cmd, int cmd_size)
{
	int i, status;

	atmel_send_command(priv, command, cmd, cmd_size);

	for (i = 5000; i; i--) {
		status = atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_STATUS_OFFSET));
		if (status != CMD_STATUS_IDLE &&
		    status != CMD_STATUS_IN_PROGRESS)
			break;
		udelay(20);
	}

	if (i == 0) {
		printk(KERN_ALERT "%s: failed to contact MAC.\n", priv->dev->name);
		status =  CMD_STATUS_HOST_ERROR;
	} else {
		if (command != CMD_EnableRadio)
			status = CMD_STATUS_COMPLETE;
	}

	return status;
}

static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index)
{
	struct get_set_mib m;
	m.type = type;
	m.size = 1;
	m.index = index;

	atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
	return atmel_rmem8(priv, atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE));
}

static void atmel_set_mib8(struct atmel_private *priv, u8 type, u8 index, u8 data)
{
	struct get_set_mib m;
	m.type = type;
	m.size = 1;
	m.index = index;
	m.data[0] = data;

	atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 1);
}

static void atmel_set_mib16(struct atmel_private *priv, u8 type, u8 index,
			    u16 data)
{
	struct get_set_mib m;
	m.type = type;
	m.size = 2;
	m.index = index;
	m.data[0] = data;
	m.data[1] = data >> 8;

	atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + 2);
}

static void atmel_set_mib(struct atmel_private *priv, u8 type, u8 index,
			  u8 *data, int data_len)
{
	struct get_set_mib m;
	m.type = type;
	m.size = data_len;
	m.index = index;

	if (data_len > MIB_MAX_DATA_BYTES)
		printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);

	memcpy(m.data, data, data_len);
	atmel_send_command_wait(priv, CMD_Set_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
}

static void atmel_get_mib(struct atmel_private *priv, u8 type, u8 index,
			  u8 *data, int data_len)
{
	struct get_set_mib m;
	m.type = type;
	m.size = data_len;
	m.index = index;

	if (data_len > MIB_MAX_DATA_BYTES)
		printk(KERN_ALERT "%s: MIB buffer too small.\n", priv->dev->name);

	atmel_send_command_wait(priv, CMD_Get_MIB_Vars, &m, MIB_HEADER_SIZE + data_len);
	atmel_copy_to_host(priv->dev, data,
			   atmel_co(priv, CMD_BLOCK_PARAMETERS_OFFSET + MIB_HEADER_SIZE), data_len);
}

static void atmel_writeAR(struct net_device *dev, u16 data)
{
	int i;
	outw(data, dev->base_addr + AR);
	/* Address register appears to need some convincing..... */
	for (i = 0; data != inw(dev->base_addr + AR) && i < 10; i++)
		outw(data, dev->base_addr + AR);
}

static void atmel_copy_to_card(struct net_device *dev, u16 dest,
			       const unsigned char *src, u16 len)
{
	int i;
	atmel_writeAR(dev, dest);
	if (dest % 2) {
		atmel_write8(dev, DR, *src);
		src++; len--;
	}
	for (i = len; i > 1 ; i -= 2) {
		u8 lb = *src++;
		u8 hb = *src++;
		atmel_write16(dev, DR, lb | (hb << 8));
	}
	if (i)
		atmel_write8(dev, DR, *src);
}

static void atmel_copy_to_host(struct net_device *dev, unsigned char *dest,
			       u16 src, u16 len)
{
	int i;
	atmel_writeAR(dev, src);
	if (src % 2) {
		*dest = atmel_read8(dev, DR);
		dest++; len--;
	}
	for (i = len; i > 1 ; i -= 2) {
		u16 hw = atmel_read16(dev, DR);
		*dest++ = hw;
		*dest++ = hw >> 8;
	}
	if (i)
		*dest = atmel_read8(dev, DR);
}

static void atmel_set_gcr(struct net_device *dev, u16 mask)
{
	outw(inw(dev->base_addr + GCR) | mask, dev->base_addr + GCR);
}

static void atmel_clear_gcr(struct net_device *dev, u16 mask)
{
	outw(inw(dev->base_addr + GCR) & ~mask, dev->base_addr + GCR);
}

static int atmel_lock_mac(struct atmel_private *priv)
{
	int i, j = 20;
 retry:
	for (i = 5000; i; i--) {
		if (!atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET)))
			break;
		udelay(20);
	}

	if (!i)
		return 0; /* timed out */

	atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 1);
	if (atmel_rmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_HOST_OFFSET))) {
		atmel_wmem8(priv, atmel_hi(priv, IFACE_LOCKOUT_MAC_OFFSET), 0);
		if (!j--)
			return 0; /* timed out */
		goto retry;
	}

	return 1;
}

static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data)
{
	atmel_writeAR(priv->dev, pos);
	atmel_write16(priv->dev, DR, data); /* card is little-endian */
	atmel_write16(priv->dev, DR, data >> 16);
}

/***************************************************************************/
/* There follows the source form of the MAC address reading firmware       */
/***************************************************************************/
#if 0

/* Copyright 2003 Matthew T. Russotto                                      */
/* But derived from the Atmel 76C502 firmware written by Atmel and         */
/* included in "atmel wireless lan drivers" package                        */
/**
    This file is part of net.russotto.AtmelMACFW, hereto referred to
    as AtmelMACFW

    AtmelMACFW is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License version 2
    as published by the Free Software Foundation.

    AtmelMACFW is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with AtmelMACFW; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

****************************************************************************/
/* This firmware should work on the 76C502 RFMD, RFMD_D, and RFMD_E        */
/* It will probably work on the 76C504 and 76C502 RFMD_3COM                */
/* It only works on SPI EEPROM versions of the card.                       */

/* This firmware initializes the SPI controller and clock, reads the MAC   */
/* address from the EEPROM into SRAM, and puts the SRAM offset of the MAC  */
/* address in MR2, and sets MR3 to 0x10 to indicate it is done             */
/* It also puts a complete copy of the EEPROM in SRAM with the offset in   */
/* MR4, for investigational purposes (maybe we can determine chip type     */
/* from that?)                                                             */

	.org 0
    .set MRBASE, 0x8000000
	.set CPSR_INITIAL, 0xD3 /* IRQ/FIQ disabled, ARM mode, Supervisor state */
	.set CPSR_USER, 0xD1 /* IRQ/FIQ disabled, ARM mode, USER state */
	.set SRAM_BASE,  0x02000000
	.set SP_BASE,    0x0F300000
	.set UNK_BASE,   0x0F000000 /* Some internal device, but which one? */
	.set SPI_CGEN_BASE,  0x0E000000 /* Some internal device, but which one? */
	.set UNK3_BASE,  0x02014000 /* Some internal device, but which one? */
	.set STACK_BASE, 0x5600
	.set SP_SR, 0x10
	.set SP_TDRE, 2 /* status register bit -- TDR empty */
	.set SP_RDRF, 1 /* status register bit -- RDR full */
	.set SP_SWRST, 0x80
	.set SP_SPIEN, 0x1
	.set SP_CR, 0   /* control register */
	.set SP_MR, 4   /* mode register */
	.set SP_RDR, 0x08 /* Read Data Register */
	.set SP_TDR, 0x0C /* Transmit Data Register */
	.set SP_CSR0, 0x30 /* chip select registers */
	.set SP_CSR1, 0x34
	.set SP_CSR2, 0x38
	.set SP_CSR3, 0x3C
	.set NVRAM_CMD_RDSR, 5 /* read status register */
	.set NVRAM_CMD_READ, 3 /* read data */
	.set NVRAM_SR_RDY, 1 /* RDY bit.  This bit is inverted */
	.set SPI_8CLOCKS, 0xFF /* Writing this to the TDR doesn't do anything to the
				  serial output, since SO is normally high.  But it
				  does cause 8 clock cycles and thus 8 bits to be
				  clocked in to the chip.  See Atmel's SPI
				  controller (e.g. AT91M55800) timing and 4K
				  SPI EEPROM manuals */

	.set NVRAM_SCRATCH, 0x02000100  /* arbitrary area for scratchpad memory */
	.set NVRAM_IMAGE, 0x02000200
	.set NVRAM_LENGTH, 0x0200
	.set MAC_ADDRESS_MIB, SRAM_BASE
	.set MAC_ADDRESS_LENGTH, 6
	.set MAC_BOOT_FLAG, 0x10
	.set MR1, 0
	.set MR2, 4
	.set MR3, 8
	.set MR4, 0xC
RESET_VECTOR:
	b RESET_HANDLER
UNDEF_VECTOR:
	b HALT1
SWI_VECTOR:
	b HALT1
IABORT_VECTOR:
	b HALT1
DABORT_VECTOR:
RESERVED_VECTOR:
	b HALT1
IRQ_VECTOR:
	b HALT1
FIQ_VECTOR:
	b HALT1
HALT1:	b HALT1
RESET_HANDLER:
	mov     r0, #CPSR_INITIAL
	msr	CPSR_c, r0	/* This is probably unnecessary */

/* I'm guessing this is initializing clock generator electronics for SPI */
	ldr	r0, =SPI_CGEN_BASE
	mov	r1, #0
	mov	r1, r1, lsl #3
	orr	r1, r1, #0
	str	r1, [r0]
	ldr	r1, [r0, #28]
	bic	r1, r1, #16
	str	r1, [r0, #28]
	mov	r1, #1
	str	r1, [r0, #8]

	ldr	r0, =MRBASE
	mov	r1, #0
	strh	r1, [r0, #MR1]
	strh	r1, [r0, #MR2]
	strh	r1, [r0, #MR3]
	strh	r1, [r0, #MR4]

	mov	sp, #STACK_BASE
	bl	SP_INIT
	mov	r0, #10
	bl	DELAY9
	bl	GET_MAC_ADDR
	bl	GET_WHOLE_NVRAM
	ldr	r0, =MRBASE
	ldr	r1, =MAC_ADDRESS_MIB
	strh	r1, [r0, #MR2]
	ldr	r1, =NVRAM_IMAGE
	strh	r1, [r0, #MR4]
	mov	r1, #MAC_BOOT_FLAG
	strh	r1, [r0, #MR3]
HALT2:	b HALT2
.func Get_Whole_NVRAM, GET_WHOLE_NVRAM
GET_WHOLE_NVRAM:
	stmdb	sp!, {lr}
	mov	r2, #0 /* 0th bytes of NVRAM */
	mov	r3, #NVRAM_LENGTH
	mov	r1, #0		/* not used in routine */
	ldr	r0, =NVRAM_IMAGE
	bl	NVRAM_XFER
	ldmia	sp!, {lr}
	bx	lr
.endfunc

.func Get_MAC_Addr, GET_MAC_ADDR
GET_MAC_ADDR:
	stmdb	sp!, {lr}
	mov	r2, #0x120	/* address of MAC Address within NVRAM */
	mov	r3, #MAC_ADDRESS_LENGTH
	mov	r1, #0		/* not used in routine */
	ldr	r0, =MAC_ADDRESS_MIB
	bl	NVRAM_XFER
	ldmia	sp!, {lr}
	bx	lr
.endfunc
.ltorg
.func Delay9, DELAY9
DELAY9:
	adds	r0, r0, r0, LSL #3   /* r0 = r0 * 9 */
DELAYLOOP:
	beq	DELAY9_done
	subs	r0, r0, #1
	b	DELAYLOOP
DELAY9_done:
	bx	lr
.endfunc

.func SP_Init, SP_INIT
SP_INIT:
	mov	r1, #SP_SWRST
	ldr	r0, =SP_BASE
	str	r1, [r0, #SP_CR] /* reset the SPI */
	mov	r1, #0
	str	r1, [r0, #SP_CR] /* release SPI from reset state */
	mov	r1, #SP_SPIEN
	str	r1, [r0, #SP_MR] /* set the SPI to MASTER mode*/
	str	r1, [r0, #SP_CR] /* enable the SPI */

/*  My guess would be this turns on the SPI clock */
	ldr	r3, =SPI_CGEN_BASE
	ldr	r1, [r3, #28]
	orr	r1, r1, #0x2000
	str	r1, [r3, #28]

	ldr	r1, =0x2000c01
	str	r1, [r0, #SP_CSR0]
	ldr	r1, =0x2000201
	str	r1, [r0, #SP_CSR1]
	str	r1, [r0, #SP_CSR2]
	str	r1, [r0, #SP_CSR3]
	ldr	r1, [r0, #SP_SR]
	ldr	r0, [r0, #SP_RDR]
	bx	lr
.endfunc
.func NVRAM_Init, NVRAM_INIT
NVRAM_INIT:
	ldr	r1, =SP_BASE
	ldr	r0, [r1, #SP_RDR]
	mov	r0, #NVRAM_CMD_RDSR
	str	r0, [r1, #SP_TDR]
SP_loop1:
	ldr	r0, [r1, #SP_SR]
	tst	r0, #SP_TDRE
	beq	SP_loop1

	mov	r0, #SPI_8CLOCKS
	str	r0, [r1, #SP_TDR]
SP_loop2:
	ldr	r0, [r1, #SP_SR]
	tst	r0, #SP_TDRE
	beq	SP_loop2

	ldr	r0, [r1, #SP_RDR]
SP_loop3:
	ldr	r0, [r1, #SP_SR]
	tst	r0, #SP_RDRF
	beq	SP_loop3

	ldr	r0, [r1, #SP_RDR]
	and	r0, r0, #255
	bx	lr
.endfunc

.func NVRAM_Xfer, NVRAM_XFER
	/* r0 = dest address */
	/* r1 = not used */
	/* r2 = src address within NVRAM */
	/* r3 = length */
NVRAM_XFER:
	stmdb	sp!, {r4, r5, lr}
	mov	r5, r0		/* save r0 (dest address) */
	mov	r4, r3		/* save r3 (length) */
	mov	r0, r2, LSR #5 /*  SPI memories put A8 in the command field */
	and	r0, r0, #8
	add	r0, r0, #NVRAM_CMD_READ
	ldr	r1, =NVRAM_SCRATCH
	strb	r0, [r1, #0]	/* save command in NVRAM_SCRATCH[0] */
	strb	r2, [r1, #1]    /* save low byte of source address in NVRAM_SCRATCH[1] */
_local1:
	bl	NVRAM_INIT
	tst	r0, #NVRAM_SR_RDY
	bne	_local1
	mov	r0, #20
	bl	DELAY9
	mov	r2, r4		/* length */
	mov	r1, r5		/* dest address */
	mov	r0, #2		/* bytes to transfer in command */
	bl	NVRAM_XFER2
	ldmia	sp!, {r4, r5, lr}
	bx	lr
.endfunc

.func NVRAM_Xfer2, NVRAM_XFER2
NVRAM_XFER2:
	stmdb	sp!, {r4, r5, r6, lr}
	ldr	r4, =SP_BASE
	mov	r3, #0
	cmp	r0, #0
	bls	_local2
	ldr	r5, =NVRAM_SCRATCH
_local4:
	ldrb	r6, [r5, r3]
	str	r6, [r4, #SP_TDR]
_local3:
	ldr	r6, [r4, #SP_SR]
	tst	r6, #SP_TDRE
	beq	_local3
	add	r3, r3, #1
	cmp	r3, r0 /* r0 is # of bytes to send out (command+addr) */
	blo	_local4
_local2:
	mov	r3, #SPI_8CLOCKS
	str	r3, [r4, #SP_TDR]
	ldr	r0, [r4, #SP_RDR]
_local5:
	ldr	r0, [r4, #SP_SR]
	tst	r0, #SP_RDRF
	beq	_local5
	ldr	r0, [r4, #SP_RDR] /* what's this byte?  It's the byte read while writing the TDR -- nonsense, because the NVRAM doesn't read and write at the same time */
	mov	r0, #0
	cmp	r2, #0  /* r2 is # of bytes to copy in */
	bls	_local6
_local7:
	ldr	r5, [r4, #SP_SR]
	tst	r5, #SP_TDRE
	beq	_local7
	str	r3, [r4, #SP_TDR]  /* r3 has SPI_8CLOCKS */
_local8:
	ldr	r5, [r4, #SP_SR]
	tst	r5, #SP_RDRF
	beq	_local8
	ldr	r5, [r4, #SP_RDR] /* but didn't we read this byte above? */
	strb	r5, [r1], #1 /* postindexed */
	add	r0, r0, #1
	cmp	r0, r2
	blo	_local7 /* since we don't send another address, the NVRAM must be capable of sequential reads */
_local6:
	mov	r0, #200
	bl	DELAY9
	ldmia	sp!, {r4, r5, r6, lr}
	bx	lr
#endif