Eric Lee / smarc-fsl-linux-kernel

lpfc_bsg.c 146 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 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609 4610 4611 4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667 4668 4669 4670 4671 4672 4673 4674 4675 4676 4677 4678 4679 4680 4681 4682 4683 4684 4685 4686 4687 4688 4689 4690 4691 4692 4693 4694 4695 4696 4697 4698 4699 4700 4701 4702 4703 4704 4705 4706 4707 4708 4709 4710 4711 4712 4713 4714 4715 4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743 4744 4745 4746 4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769 4770 4771 4772 4773 4774 4775 4776 4777 4778 4779 4780 4781 4782 4783 4784 4785 4786 4787 4788 4789 4790 4791 4792 4793 4794 4795 4796 4797 4798 4799 4800 4801 4802 4803 4804 4805 4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818 4819 4820 4821 4822 4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870 4871 4872 4873 4874 4875 4876 4877 4878 4879 4880 4881 4882 4883 4884 4885 4886 4887 4888 4889 4890 4891 4892 4893 4894 4895 4896 4897 4898 4899 4900 4901 4902 4903 4904 4905 4906 4907 4908 4909 4910 4911 4912 4913 4914 4915 4916 4917 4918 4919 4920 4921 4922 4923 4924 4925 4926 4927 4928 4929 4930 4931 4932 4933 4934 4935 4936 4937 4938 4939 4940 4941 4942 4943 4944 4945 4946 4947 4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960 4961 4962 4963 4964 4965 4966 4967 4968 4969 4970 4971 4972 4973 4974 4975 4976 4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987 4988 4989 4990 4991 4992 4993 4994 4995 4996 4997 4998 4999 5000 5001 5002 5003 5004 5005 5006 5007 5008 5009 5010 5011 5012 5013 5014 5015 5016 5017 5018 5019 5020 5021 5022 5023 5024 5025 5026 5027 5028 5029 5030 5031 5032 5033 5034 5035 5036 5037 5038 5039 5040 5041 5042 5043 5044 5045 5046 5047 5048 5049 5050 5051 5052 5053 5054 5055 5056 5057 5058 5059 5060 5061 5062 5063 5064 5065 5066 5067 5068 5069 5070 5071 5072 5073 5074 5075 5076 5077 5078 5079 5080 5081 5082 5083 5084 5085 5086 5087 5088 5089 5090 5091 5092 5093 5094 5095 5096 5097 5098 5099 5100 5101 5102 5103 5104 5105 5106 5107 5108 5109 5110 5111 5112 5113 5114 5115 5116 5117 5118 5119 5120 5121 5122 5123 5124 5125 5126 5127 5128 5129 5130 5131 5132 5133 5134 5135 5136 5137 5138 5139 5140 5141 5142 5143 5144 5145 5146 5147 5148 5149 5150 5151 5152 5153 5154 5155 5156 5157 5158 5159 5160 5161 5162 5163 5164 5165 5166 5167 5168 5169 5170 5171 5172 5173 5174 5175 5176 5177 5178 5179 5180 5181 5182 5183 5184 5185 5186 5187 
/*******************************************************************
 * This file is part of the Emulex Linux Device Driver for         *
 * Fibre Channel Host Bus Adapters.                                *
 * Copyright (C) 2009-2011 Emulex.  All rights reserved.           *
 * EMULEX and SLI are trademarks of Emulex.                        *
 * www.emulex.com                                                  *
 *                                                                 *
 * This program is free software; you can redistribute it and/or   *
 * modify it under the terms of version 2 of the GNU General       *
 * Public License as published by the Free Software Foundation.    *
 * This program is distributed in the hope that it will be useful. *
 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
 * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
 * more details, a copy of which can be found in the file COPYING  *
 * included with this package.                                     *
 *******************************************************************/

#include <linux/interrupt.h>
#include <linux/mempool.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/list.h>

#include <scsi/scsi.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_fc.h>
#include <scsi/scsi_bsg_fc.h>
#include <scsi/fc/fc_fs.h>

#include "lpfc_hw4.h"
#include "lpfc_hw.h"
#include "lpfc_sli.h"
#include "lpfc_sli4.h"
#include "lpfc_nl.h"
#include "lpfc_bsg.h"
#include "lpfc_disc.h"
#include "lpfc_scsi.h"
#include "lpfc.h"
#include "lpfc_logmsg.h"
#include "lpfc_crtn.h"
#include "lpfc_debugfs.h"
#include "lpfc_vport.h"
#include "lpfc_version.h"

struct lpfc_bsg_event {
	struct list_head node;
	struct kref kref;
	wait_queue_head_t wq;

	/* Event type and waiter identifiers */
	uint32_t type_mask;
	uint32_t req_id;
	uint32_t reg_id;

	/* next two flags are here for the auto-delete logic */
	unsigned long wait_time_stamp;
	int waiting;

	/* seen and not seen events */
	struct list_head events_to_get;
	struct list_head events_to_see;

	/* job waiting for this event to finish */
	struct fc_bsg_job *set_job;
};

struct lpfc_bsg_iocb {
	struct lpfc_iocbq *cmdiocbq;
	struct lpfc_iocbq *rspiocbq;
	struct lpfc_dmabuf *bmp;
	struct lpfc_nodelist *ndlp;

	/* job waiting for this iocb to finish */
	struct fc_bsg_job *set_job;
};

struct lpfc_bsg_mbox {
	LPFC_MBOXQ_t *pmboxq;
	MAILBOX_t *mb;
	struct lpfc_dmabuf *dmabuffers; /* for BIU diags */
	uint8_t *ext; /* extended mailbox data */
	uint32_t mbOffset; /* from app */
	uint32_t inExtWLen; /* from app */
	uint32_t outExtWLen; /* from app */

	/* job waiting for this mbox command to finish */
	struct fc_bsg_job *set_job;
};

#define MENLO_DID 0x0000FC0E

struct lpfc_bsg_menlo {
	struct lpfc_iocbq *cmdiocbq;
	struct lpfc_iocbq *rspiocbq;
	struct lpfc_dmabuf *bmp;

	/* job waiting for this iocb to finish */
	struct fc_bsg_job *set_job;
};

#define TYPE_EVT 	1
#define TYPE_IOCB	2
#define TYPE_MBOX	3
#define TYPE_MENLO	4
struct bsg_job_data {
	uint32_t type;
	union {
		struct lpfc_bsg_event *evt;
		struct lpfc_bsg_iocb iocb;
		struct lpfc_bsg_mbox mbox;
		struct lpfc_bsg_menlo menlo;
	} context_un;
};

struct event_data {
	struct list_head node;
	uint32_t type;
	uint32_t immed_dat;
	void *data;
	uint32_t len;
};

#define BUF_SZ_4K 4096
#define SLI_CT_ELX_LOOPBACK 0x10

enum ELX_LOOPBACK_CMD {
	ELX_LOOPBACK_XRI_SETUP,
	ELX_LOOPBACK_DATA,
};

#define ELX_LOOPBACK_HEADER_SZ \
	(size_t)(&((struct lpfc_sli_ct_request *)NULL)->un)

struct lpfc_dmabufext {
	struct lpfc_dmabuf dma;
	uint32_t size;
	uint32_t flag;
};

/**
 * lpfc_bsg_send_mgmt_cmd_cmp - lpfc_bsg_send_mgmt_cmd's completion handler
 * @phba: Pointer to HBA context object.
 * @cmdiocbq: Pointer to command iocb.
 * @rspiocbq: Pointer to response iocb.
 *
 * This function is the completion handler for iocbs issued using
 * lpfc_bsg_send_mgmt_cmd function. This function is called by the
 * ring event handler function without any lock held. This function
 * can be called from both worker thread context and interrupt
 * context. This function also can be called from another thread which
 * cleans up the SLI layer objects.
 * This function copies the contents of the response iocb to the
 * response iocb memory object provided by the caller of
 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
 * sleeps for the iocb completion.
 **/
static void
lpfc_bsg_send_mgmt_cmd_cmp(struct lpfc_hba *phba,
			struct lpfc_iocbq *cmdiocbq,
			struct lpfc_iocbq *rspiocbq)
{
	struct bsg_job_data *dd_data;
	struct fc_bsg_job *job;
	IOCB_t *rsp;
	struct lpfc_dmabuf *bmp;
	struct lpfc_nodelist *ndlp;
	struct lpfc_bsg_iocb *iocb;
	unsigned long flags;
	int rc = 0;

	spin_lock_irqsave(&phba->ct_ev_lock, flags);
	dd_data = cmdiocbq->context2;
	if (!dd_data) {
		spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
		lpfc_sli_release_iocbq(phba, cmdiocbq);
		return;
	}

	iocb = &dd_data->context_un.iocb;
	job = iocb->set_job;
	job->dd_data = NULL; /* so timeout handler does not reply */

	bmp = iocb->bmp;
	rsp = &rspiocbq->iocb;
	ndlp = cmdiocbq->context1;

	pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
		     job->request_payload.sg_cnt, DMA_TO_DEVICE);
	pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
		     job->reply_payload.sg_cnt, DMA_FROM_DEVICE);

	if (rsp->ulpStatus) {
		if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
			switch (rsp->un.ulpWord[4] & 0xff) {
			case IOERR_SEQUENCE_TIMEOUT:
				rc = -ETIMEDOUT;
				break;
			case IOERR_INVALID_RPI:
				rc = -EFAULT;
				break;
			default:
				rc = -EACCES;
				break;
			}
		} else
			rc = -EACCES;
	} else
		job->reply->reply_payload_rcv_len =
			rsp->un.genreq64.bdl.bdeSize;

	lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
	lpfc_sli_release_iocbq(phba, cmdiocbq);
	lpfc_nlp_put(ndlp);
	kfree(bmp);
	kfree(dd_data);
	/* make error code available to userspace */
	job->reply->result = rc;
	/* complete the job back to userspace */
	job->job_done(job);
	spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
	return;
}

/**
 * lpfc_bsg_send_mgmt_cmd - send a CT command from a bsg request
 * @job: fc_bsg_job to handle
 **/
static int
lpfc_bsg_send_mgmt_cmd(struct fc_bsg_job *job)
{
	struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
	struct lpfc_hba *phba = vport->phba;
	struct lpfc_rport_data *rdata = job->rport->dd_data;
	struct lpfc_nodelist *ndlp = rdata->pnode;
	struct ulp_bde64 *bpl = NULL;
	uint32_t timeout;
	struct lpfc_iocbq *cmdiocbq = NULL;
	IOCB_t *cmd;
	struct lpfc_dmabuf *bmp = NULL;
	int request_nseg;
	int reply_nseg;
	struct scatterlist *sgel = NULL;
	int numbde;
	dma_addr_t busaddr;
	struct bsg_job_data *dd_data;
	uint32_t creg_val;
	int rc = 0;
	int iocb_stat;

	/* in case no data is transferred */
	job->reply->reply_payload_rcv_len = 0;

	/* allocate our bsg tracking structure */
	dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
	if (!dd_data) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"2733 Failed allocation of dd_data\n");
		rc = -ENOMEM;
		goto no_dd_data;
	}

	if (!lpfc_nlp_get(ndlp)) {
		rc = -ENODEV;
		goto no_ndlp;
	}

	bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
	if (!bmp) {
		rc = -ENOMEM;
		goto free_ndlp;
	}

	if (ndlp->nlp_flag & NLP_ELS_SND_MASK) {
		rc = -ENODEV;
		goto free_bmp;
	}

	cmdiocbq = lpfc_sli_get_iocbq(phba);
	if (!cmdiocbq) {
		rc = -ENOMEM;
		goto free_bmp;
	}

	cmd = &cmdiocbq->iocb;
	bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
	if (!bmp->virt) {
		rc = -ENOMEM;
		goto free_cmdiocbq;
	}

	INIT_LIST_HEAD(&bmp->list);
	bpl = (struct ulp_bde64 *) bmp->virt;
	request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list,
				  job->request_payload.sg_cnt, DMA_TO_DEVICE);
	for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) {
		busaddr = sg_dma_address(sgel);
		bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
		bpl->tus.f.bdeSize = sg_dma_len(sgel);
		bpl->tus.w = cpu_to_le32(bpl->tus.w);
		bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
		bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
		bpl++;
	}

	reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list,
				job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
	for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) {
		busaddr = sg_dma_address(sgel);
		bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
		bpl->tus.f.bdeSize = sg_dma_len(sgel);
		bpl->tus.w = cpu_to_le32(bpl->tus.w);
		bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
		bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
		bpl++;
	}

	cmd->un.genreq64.bdl.ulpIoTag32 = 0;
	cmd->un.genreq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
	cmd->un.genreq64.bdl.addrLow = putPaddrLow(bmp->phys);
	cmd->un.genreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
	cmd->un.genreq64.bdl.bdeSize =
		(request_nseg + reply_nseg) * sizeof(struct ulp_bde64);
	cmd->ulpCommand = CMD_GEN_REQUEST64_CR;
	cmd->un.genreq64.w5.hcsw.Fctl = (SI | LA);
	cmd->un.genreq64.w5.hcsw.Dfctl = 0;
	cmd->un.genreq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
	cmd->un.genreq64.w5.hcsw.Type = FC_TYPE_CT;
	cmd->ulpBdeCount = 1;
	cmd->ulpLe = 1;
	cmd->ulpClass = CLASS3;
	cmd->ulpContext = ndlp->nlp_rpi;
	if (phba->sli_rev == LPFC_SLI_REV4)
		cmd->ulpContext = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
	cmd->ulpOwner = OWN_CHIP;
	cmdiocbq->vport = phba->pport;
	cmdiocbq->context3 = bmp;
	cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
	timeout = phba->fc_ratov * 2;
	cmd->ulpTimeout = timeout;

	cmdiocbq->iocb_cmpl = lpfc_bsg_send_mgmt_cmd_cmp;
	cmdiocbq->context1 = ndlp;
	cmdiocbq->context2 = dd_data;
	dd_data->type = TYPE_IOCB;
	dd_data->context_un.iocb.cmdiocbq = cmdiocbq;
	dd_data->context_un.iocb.set_job = job;
	dd_data->context_un.iocb.bmp = bmp;

	if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
		if (lpfc_readl(phba->HCregaddr, &creg_val)) {
			rc = -EIO ;
			goto free_cmdiocbq;
		}
		creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
		writel(creg_val, phba->HCregaddr);
		readl(phba->HCregaddr); /* flush */
	}

	iocb_stat = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
	if (iocb_stat == IOCB_SUCCESS)
		return 0; /* done for now */
	else if (iocb_stat == IOCB_BUSY)
		rc = -EAGAIN;
	else
		rc = -EIO;


	/* iocb failed so cleanup */
	pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
		     job->request_payload.sg_cnt, DMA_TO_DEVICE);
	pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
		     job->reply_payload.sg_cnt, DMA_FROM_DEVICE);

	lpfc_mbuf_free(phba, bmp->virt, bmp->phys);

free_cmdiocbq:
	lpfc_sli_release_iocbq(phba, cmdiocbq);
free_bmp:
	kfree(bmp);
free_ndlp:
	lpfc_nlp_put(ndlp);
no_ndlp:
	kfree(dd_data);
no_dd_data:
	/* make error code available to userspace */
	job->reply->result = rc;
	job->dd_data = NULL;
	return rc;
}

/**
 * lpfc_bsg_rport_els_cmp - lpfc_bsg_rport_els's completion handler
 * @phba: Pointer to HBA context object.
 * @cmdiocbq: Pointer to command iocb.
 * @rspiocbq: Pointer to response iocb.
 *
 * This function is the completion handler for iocbs issued using
 * lpfc_bsg_rport_els_cmp function. This function is called by the
 * ring event handler function without any lock held. This function
 * can be called from both worker thread context and interrupt
 * context. This function also can be called from other thread which
 * cleans up the SLI layer objects.
 * This function copies the contents of the response iocb to the
 * response iocb memory object provided by the caller of
 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
 * sleeps for the iocb completion.
 **/
static void
lpfc_bsg_rport_els_cmp(struct lpfc_hba *phba,
			struct lpfc_iocbq *cmdiocbq,
			struct lpfc_iocbq *rspiocbq)
{
	struct bsg_job_data *dd_data;
	struct fc_bsg_job *job;
	IOCB_t *rsp;
	struct lpfc_nodelist *ndlp;
	struct lpfc_dmabuf *pbuflist = NULL;
	struct fc_bsg_ctels_reply *els_reply;
	uint8_t *rjt_data;
	unsigned long flags;
	int rc = 0;

	spin_lock_irqsave(&phba->ct_ev_lock, flags);
	dd_data = cmdiocbq->context1;
	/* normal completion and timeout crossed paths, already done */
	if (!dd_data) {
		spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
		return;
	}

	cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
	if (cmdiocbq->context2 && rspiocbq)
		memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
		       &rspiocbq->iocb, sizeof(IOCB_t));

	job = dd_data->context_un.iocb.set_job;
	cmdiocbq = dd_data->context_un.iocb.cmdiocbq;
	rspiocbq = dd_data->context_un.iocb.rspiocbq;
	rsp = &rspiocbq->iocb;
	ndlp = dd_data->context_un.iocb.ndlp;

	pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
		     job->request_payload.sg_cnt, DMA_TO_DEVICE);
	pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
		     job->reply_payload.sg_cnt, DMA_FROM_DEVICE);

	if (job->reply->result == -EAGAIN)
		rc = -EAGAIN;
	else if (rsp->ulpStatus == IOSTAT_SUCCESS)
		job->reply->reply_payload_rcv_len =
			rsp->un.elsreq64.bdl.bdeSize;
	else if (rsp->ulpStatus == IOSTAT_LS_RJT) {
		job->reply->reply_payload_rcv_len =
			sizeof(struct fc_bsg_ctels_reply);
		/* LS_RJT data returned in word 4 */
		rjt_data = (uint8_t *)&rsp->un.ulpWord[4];
		els_reply = &job->reply->reply_data.ctels_reply;
		els_reply->status = FC_CTELS_STATUS_REJECT;
		els_reply->rjt_data.action = rjt_data[3];
		els_reply->rjt_data.reason_code = rjt_data[2];
		els_reply->rjt_data.reason_explanation = rjt_data[1];
		els_reply->rjt_data.vendor_unique = rjt_data[0];
	} else
		rc = -EIO;

	pbuflist = (struct lpfc_dmabuf *) cmdiocbq->context3;
	lpfc_mbuf_free(phba, pbuflist->virt, pbuflist->phys);
	lpfc_sli_release_iocbq(phba, rspiocbq);
	lpfc_sli_release_iocbq(phba, cmdiocbq);
	lpfc_nlp_put(ndlp);
	kfree(dd_data);
	/* make error code available to userspace */
	job->reply->result = rc;
	job->dd_data = NULL;
	/* complete the job back to userspace */
	job->job_done(job);
	spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
	return;
}

/**
 * lpfc_bsg_rport_els - send an ELS command from a bsg request
 * @job: fc_bsg_job to handle
 **/
static int
lpfc_bsg_rport_els(struct fc_bsg_job *job)
{
	struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
	struct lpfc_hba *phba = vport->phba;
	struct lpfc_rport_data *rdata = job->rport->dd_data;
	struct lpfc_nodelist *ndlp = rdata->pnode;
	uint32_t elscmd;
	uint32_t cmdsize;
	uint32_t rspsize;
	struct lpfc_iocbq *rspiocbq;
	struct lpfc_iocbq *cmdiocbq;
	IOCB_t *rsp;
	uint16_t rpi = 0;
	struct lpfc_dmabuf *pcmd;
	struct lpfc_dmabuf *prsp;
	struct lpfc_dmabuf *pbuflist = NULL;
	struct ulp_bde64 *bpl;
	int request_nseg;
	int reply_nseg;
	struct scatterlist *sgel = NULL;
	int numbde;
	dma_addr_t busaddr;
	struct bsg_job_data *dd_data;
	uint32_t creg_val;
	int rc = 0;

	/* in case no data is transferred */
	job->reply->reply_payload_rcv_len = 0;

	/* allocate our bsg tracking structure */
	dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
	if (!dd_data) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"2735 Failed allocation of dd_data\n");
		rc = -ENOMEM;
		goto no_dd_data;
	}

	if (!lpfc_nlp_get(ndlp)) {
		rc = -ENODEV;
		goto free_dd_data;
	}

	elscmd = job->request->rqst_data.r_els.els_code;
	cmdsize = job->request_payload.payload_len;
	rspsize = job->reply_payload.payload_len;
	rspiocbq = lpfc_sli_get_iocbq(phba);
	if (!rspiocbq) {
		lpfc_nlp_put(ndlp);
		rc = -ENOMEM;
		goto free_dd_data;
	}

	rsp = &rspiocbq->iocb;
	rpi = ndlp->nlp_rpi;

	cmdiocbq = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp,
				      ndlp->nlp_DID, elscmd);
	if (!cmdiocbq) {
		rc = -EIO;
		goto free_rspiocbq;
	}

	/* prep els iocb set context1 to the ndlp, context2 to the command
	 * dmabuf, context3 holds the data dmabuf
	 */
	pcmd = (struct lpfc_dmabuf *) cmdiocbq->context2;
	prsp = (struct lpfc_dmabuf *) pcmd->list.next;
	lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
	kfree(pcmd);
	lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
	kfree(prsp);
	cmdiocbq->context2 = NULL;

	pbuflist = (struct lpfc_dmabuf *) cmdiocbq->context3;
	bpl = (struct ulp_bde64 *) pbuflist->virt;

	request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list,
				  job->request_payload.sg_cnt, DMA_TO_DEVICE);
	for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) {
		busaddr = sg_dma_address(sgel);
		bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
		bpl->tus.f.bdeSize = sg_dma_len(sgel);
		bpl->tus.w = cpu_to_le32(bpl->tus.w);
		bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
		bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
		bpl++;
	}

	reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list,
				job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
	for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) {
		busaddr = sg_dma_address(sgel);
		bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
		bpl->tus.f.bdeSize = sg_dma_len(sgel);
		bpl->tus.w = cpu_to_le32(bpl->tus.w);
		bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
		bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
		bpl++;
	}
	cmdiocbq->iocb.un.elsreq64.bdl.bdeSize =
		(request_nseg + reply_nseg) * sizeof(struct ulp_bde64);
	cmdiocbq->iocb.ulpContext = rpi;
	cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
	cmdiocbq->context1 = NULL;
	cmdiocbq->context2 = NULL;

	cmdiocbq->iocb_cmpl = lpfc_bsg_rport_els_cmp;
	cmdiocbq->context1 = dd_data;
	cmdiocbq->context2 = rspiocbq;
	dd_data->type = TYPE_IOCB;
	dd_data->context_un.iocb.cmdiocbq = cmdiocbq;
	dd_data->context_un.iocb.rspiocbq = rspiocbq;
	dd_data->context_un.iocb.set_job = job;
	dd_data->context_un.iocb.bmp = NULL;
	dd_data->context_un.iocb.ndlp = ndlp;

	if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
		if (lpfc_readl(phba->HCregaddr, &creg_val)) {
			rc = -EIO;
			goto linkdown_err;
		}
		creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
		writel(creg_val, phba->HCregaddr);
		readl(phba->HCregaddr); /* flush */
	}
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
	lpfc_nlp_put(ndlp);
	if (rc == IOCB_SUCCESS)
		return 0; /* done for now */
	else if (rc == IOCB_BUSY)
		rc = -EAGAIN;
	else
		rc = -EIO;

linkdown_err:
	pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
		     job->request_payload.sg_cnt, DMA_TO_DEVICE);
	pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
		     job->reply_payload.sg_cnt, DMA_FROM_DEVICE);

	lpfc_mbuf_free(phba, pbuflist->virt, pbuflist->phys);

	lpfc_sli_release_iocbq(phba, cmdiocbq);

free_rspiocbq:
	lpfc_sli_release_iocbq(phba, rspiocbq);

free_dd_data:
	kfree(dd_data);

no_dd_data:
	/* make error code available to userspace */
	job->reply->result = rc;
	job->dd_data = NULL;
	return rc;
}

/**
 * lpfc_bsg_event_free - frees an allocated event structure
 * @kref: Pointer to a kref.
 *
 * Called from kref_put. Back cast the kref into an event structure address.
 * Free any events to get, delete associated nodes, free any events to see,
 * free any data then free the event itself.
 **/
static void
lpfc_bsg_event_free(struct kref *kref)
{
	struct lpfc_bsg_event *evt = container_of(kref, struct lpfc_bsg_event,
						  kref);
	struct event_data *ed;

	list_del(&evt->node);

	while (!list_empty(&evt->events_to_get)) {
		ed = list_entry(evt->events_to_get.next, typeof(*ed), node);
		list_del(&ed->node);
		kfree(ed->data);
		kfree(ed);
	}

	while (!list_empty(&evt->events_to_see)) {
		ed = list_entry(evt->events_to_see.next, typeof(*ed), node);
		list_del(&ed->node);
		kfree(ed->data);
		kfree(ed);
	}

	kfree(evt);
}

/**
 * lpfc_bsg_event_ref - increments the kref for an event
 * @evt: Pointer to an event structure.
 **/
static inline void
lpfc_bsg_event_ref(struct lpfc_bsg_event *evt)
{
	kref_get(&evt->kref);
}

/**
 * lpfc_bsg_event_unref - Uses kref_put to free an event structure
 * @evt: Pointer to an event structure.
 **/
static inline void
lpfc_bsg_event_unref(struct lpfc_bsg_event *evt)
{
	kref_put(&evt->kref, lpfc_bsg_event_free);
}

/**
 * lpfc_bsg_event_new - allocate and initialize a event structure
 * @ev_mask: Mask of events.
 * @ev_reg_id: Event reg id.
 * @ev_req_id: Event request id.
 **/
static struct lpfc_bsg_event *
lpfc_bsg_event_new(uint32_t ev_mask, int ev_reg_id, uint32_t ev_req_id)
{
	struct lpfc_bsg_event *evt = kzalloc(sizeof(*evt), GFP_KERNEL);

	if (!evt)
		return NULL;

	INIT_LIST_HEAD(&evt->events_to_get);
	INIT_LIST_HEAD(&evt->events_to_see);
	evt->type_mask = ev_mask;
	evt->req_id = ev_req_id;
	evt->reg_id = ev_reg_id;
	evt->wait_time_stamp = jiffies;
	init_waitqueue_head(&evt->wq);
	kref_init(&evt->kref);
	return evt;
}

/**
 * diag_cmd_data_free - Frees an lpfc dma buffer extension
 * @phba: Pointer to HBA context object.
 * @mlist: Pointer to an lpfc dma buffer extension.
 **/
static int
diag_cmd_data_free(struct lpfc_hba *phba, struct lpfc_dmabufext *mlist)
{
	struct lpfc_dmabufext *mlast;
	struct pci_dev *pcidev;
	struct list_head head, *curr, *next;

	if ((!mlist) || (!lpfc_is_link_up(phba) &&
		(phba->link_flag & LS_LOOPBACK_MODE))) {
		return 0;
	}

	pcidev = phba->pcidev;
	list_add_tail(&head, &mlist->dma.list);

	list_for_each_safe(curr, next, &head) {
		mlast = list_entry(curr, struct lpfc_dmabufext , dma.list);
		if (mlast->dma.virt)
			dma_free_coherent(&pcidev->dev,
					  mlast->size,
					  mlast->dma.virt,
					  mlast->dma.phys);
		kfree(mlast);
	}
	return 0;
}

/**
 * lpfc_bsg_ct_unsol_event - process an unsolicited CT command
 * @phba:
 * @pring:
 * @piocbq:
 *
 * This function is called when an unsolicited CT command is received.  It
 * forwards the event to any processes registered to receive CT events.
 **/
int
lpfc_bsg_ct_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
			struct lpfc_iocbq *piocbq)
{
	uint32_t evt_req_id = 0;
	uint32_t cmd;
	uint32_t len;
	struct lpfc_dmabuf *dmabuf = NULL;
	struct lpfc_bsg_event *evt;
	struct event_data *evt_dat = NULL;
	struct lpfc_iocbq *iocbq;
	size_t offset = 0;
	struct list_head head;
	struct ulp_bde64 *bde;
	dma_addr_t dma_addr;
	int i;
	struct lpfc_dmabuf *bdeBuf1 = piocbq->context2;
	struct lpfc_dmabuf *bdeBuf2 = piocbq->context3;
	struct lpfc_hbq_entry *hbqe;
	struct lpfc_sli_ct_request *ct_req;
	struct fc_bsg_job *job = NULL;
	unsigned long flags;
	int size = 0;

	INIT_LIST_HEAD(&head);
	list_add_tail(&head, &piocbq->list);

	if (piocbq->iocb.ulpBdeCount == 0 ||
	    piocbq->iocb.un.cont64[0].tus.f.bdeSize == 0)
		goto error_ct_unsol_exit;

	if (phba->link_state == LPFC_HBA_ERROR ||
		(!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)))
		goto error_ct_unsol_exit;

	if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
		dmabuf = bdeBuf1;
	else {
		dma_addr = getPaddr(piocbq->iocb.un.cont64[0].addrHigh,
				    piocbq->iocb.un.cont64[0].addrLow);
		dmabuf = lpfc_sli_ringpostbuf_get(phba, pring, dma_addr);
	}
	if (dmabuf == NULL)
		goto error_ct_unsol_exit;
	ct_req = (struct lpfc_sli_ct_request *)dmabuf->virt;
	evt_req_id = ct_req->FsType;
	cmd = ct_req->CommandResponse.bits.CmdRsp;
	len = ct_req->CommandResponse.bits.Size;
	if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
		lpfc_sli_ringpostbuf_put(phba, pring, dmabuf);

	spin_lock_irqsave(&phba->ct_ev_lock, flags);
	list_for_each_entry(evt, &phba->ct_ev_waiters, node) {
		if (!(evt->type_mask & FC_REG_CT_EVENT) ||
			evt->req_id != evt_req_id)
			continue;

		lpfc_bsg_event_ref(evt);
		spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
		evt_dat = kzalloc(sizeof(*evt_dat), GFP_KERNEL);
		if (evt_dat == NULL) {
			spin_lock_irqsave(&phba->ct_ev_lock, flags);
			lpfc_bsg_event_unref(evt);
			lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
					"2614 Memory allocation failed for "
					"CT event\n");
			break;
		}

		if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
			/* take accumulated byte count from the last iocbq */
			iocbq = list_entry(head.prev, typeof(*iocbq), list);
			evt_dat->len = iocbq->iocb.unsli3.rcvsli3.acc_len;
		} else {
			list_for_each_entry(iocbq, &head, list) {
				for (i = 0; i < iocbq->iocb.ulpBdeCount; i++)
					evt_dat->len +=
					iocbq->iocb.un.cont64[i].tus.f.bdeSize;
			}
		}

		evt_dat->data = kzalloc(evt_dat->len, GFP_KERNEL);
		if (evt_dat->data == NULL) {
			lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
					"2615 Memory allocation failed for "
					"CT event data, size %d\n",
					evt_dat->len);
			kfree(evt_dat);
			spin_lock_irqsave(&phba->ct_ev_lock, flags);
			lpfc_bsg_event_unref(evt);
			spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
			goto error_ct_unsol_exit;
		}

		list_for_each_entry(iocbq, &head, list) {
			size = 0;
			if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
				bdeBuf1 = iocbq->context2;
				bdeBuf2 = iocbq->context3;
			}
			for (i = 0; i < iocbq->iocb.ulpBdeCount; i++) {
				if (phba->sli3_options &
				    LPFC_SLI3_HBQ_ENABLED) {
					if (i == 0) {
						hbqe = (struct lpfc_hbq_entry *)
						  &iocbq->iocb.un.ulpWord[0];
						size = hbqe->bde.tus.f.bdeSize;
						dmabuf = bdeBuf1;
					} else if (i == 1) {
						hbqe = (struct lpfc_hbq_entry *)
							&iocbq->iocb.unsli3.
							sli3Words[4];
						size = hbqe->bde.tus.f.bdeSize;
						dmabuf = bdeBuf2;
					}
					if ((offset + size) > evt_dat->len)
						size = evt_dat->len - offset;
				} else {
					size = iocbq->iocb.un.cont64[i].
						tus.f.bdeSize;
					bde = &iocbq->iocb.un.cont64[i];
					dma_addr = getPaddr(bde->addrHigh,
							    bde->addrLow);
					dmabuf = lpfc_sli_ringpostbuf_get(phba,
							pring, dma_addr);
				}
				if (!dmabuf) {
					lpfc_printf_log(phba, KERN_ERR,
						LOG_LIBDFC, "2616 No dmabuf "
						"found for iocbq 0x%p\n",
						iocbq);
					kfree(evt_dat->data);
					kfree(evt_dat);
					spin_lock_irqsave(&phba->ct_ev_lock,
						flags);
					lpfc_bsg_event_unref(evt);
					spin_unlock_irqrestore(
						&phba->ct_ev_lock, flags);
					goto error_ct_unsol_exit;
				}
				memcpy((char *)(evt_dat->data) + offset,
				       dmabuf->virt, size);
				offset += size;
				if (evt_req_id != SLI_CT_ELX_LOOPBACK &&
				    !(phba->sli3_options &
				      LPFC_SLI3_HBQ_ENABLED)) {
					lpfc_sli_ringpostbuf_put(phba, pring,
								 dmabuf);
				} else {
					switch (cmd) {
					case ELX_LOOPBACK_DATA:
						if (phba->sli_rev <
						    LPFC_SLI_REV4)
							diag_cmd_data_free(phba,
							(struct lpfc_dmabufext
							 *)dmabuf);
						break;
					case ELX_LOOPBACK_XRI_SETUP:
						if ((phba->sli_rev ==
							LPFC_SLI_REV2) ||
							(phba->sli3_options &
							LPFC_SLI3_HBQ_ENABLED
							)) {
							lpfc_in_buf_free(phba,
									dmabuf);
						} else {
							lpfc_post_buffer(phba,
									 pring,
									 1);
						}
						break;
					default:
						if (!(phba->sli3_options &
						      LPFC_SLI3_HBQ_ENABLED))
							lpfc_post_buffer(phba,
									 pring,
									 1);
						break;
					}
				}
			}
		}

		spin_lock_irqsave(&phba->ct_ev_lock, flags);
		if (phba->sli_rev == LPFC_SLI_REV4) {
			evt_dat->immed_dat = phba->ctx_idx;
			phba->ctx_idx = (phba->ctx_idx + 1) % 64;
			/* Provide warning for over-run of the ct_ctx array */
			if (phba->ct_ctx[evt_dat->immed_dat].flags &
			    UNSOL_VALID)
				lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
						"2717 CT context array entry "
						"[%d] over-run: oxid:x%x, "
						"sid:x%x\n", phba->ctx_idx,
						phba->ct_ctx[
						    evt_dat->immed_dat].oxid,
						phba->ct_ctx[
						    evt_dat->immed_dat].SID);
			phba->ct_ctx[evt_dat->immed_dat].rxid =
				piocbq->iocb.ulpContext;
			phba->ct_ctx[evt_dat->immed_dat].oxid =
				piocbq->iocb.unsli3.rcvsli3.ox_id;
			phba->ct_ctx[evt_dat->immed_dat].SID =
				piocbq->iocb.un.rcvels.remoteID;
			phba->ct_ctx[evt_dat->immed_dat].flags = UNSOL_VALID;
		} else
			evt_dat->immed_dat = piocbq->iocb.ulpContext;

		evt_dat->type = FC_REG_CT_EVENT;
		list_add(&evt_dat->node, &evt->events_to_see);
		if (evt_req_id == SLI_CT_ELX_LOOPBACK) {
			wake_up_interruptible(&evt->wq);
			lpfc_bsg_event_unref(evt);
			break;
		}

		list_move(evt->events_to_see.prev, &evt->events_to_get);
		lpfc_bsg_event_unref(evt);

		job = evt->set_job;
		evt->set_job = NULL;
		if (job) {
			job->reply->reply_payload_rcv_len = size;
			/* make error code available to userspace */
			job->reply->result = 0;
			job->dd_data = NULL;
			/* complete the job back to userspace */
			spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
			job->job_done(job);
			spin_lock_irqsave(&phba->ct_ev_lock, flags);
		}
	}
	spin_unlock_irqrestore(&phba->ct_ev_lock, flags);

error_ct_unsol_exit:
	if (!list_empty(&head))
		list_del(&head);
	if ((phba->sli_rev < LPFC_SLI_REV4) &&
	    (evt_req_id == SLI_CT_ELX_LOOPBACK))
		return 0;
	return 1;
}

/**
 * lpfc_bsg_hba_set_event - process a SET_EVENT bsg vendor command
 * @job: SET_EVENT fc_bsg_job
 **/
static int
lpfc_bsg_hba_set_event(struct fc_bsg_job *job)
{
	struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
	struct lpfc_hba *phba = vport->phba;
	struct set_ct_event *event_req;
	struct lpfc_bsg_event *evt;
	int rc = 0;
	struct bsg_job_data *dd_data = NULL;
	uint32_t ev_mask;
	unsigned long flags;

	if (job->request_len <
	    sizeof(struct fc_bsg_request) + sizeof(struct set_ct_event)) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"2612 Received SET_CT_EVENT below minimum "
				"size\n");
		rc = -EINVAL;
		goto job_error;
	}

	dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
	if (dd_data == NULL) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"2734 Failed allocation of dd_data\n");
		rc = -ENOMEM;
		goto job_error;
	}

	event_req = (struct set_ct_event *)
		job->request->rqst_data.h_vendor.vendor_cmd;
	ev_mask = ((uint32_t)(unsigned long)event_req->type_mask &
				FC_REG_EVENT_MASK);
	spin_lock_irqsave(&phba->ct_ev_lock, flags);
	list_for_each_entry(evt, &phba->ct_ev_waiters, node) {
		if (evt->reg_id == event_req->ev_reg_id) {
			lpfc_bsg_event_ref(evt);
			evt->wait_time_stamp = jiffies;
			break;
		}
	}
	spin_unlock_irqrestore(&phba->ct_ev_lock, flags);

	if (&evt->node == &phba->ct_ev_waiters) {
		/* no event waiting struct yet - first call */
		evt = lpfc_bsg_event_new(ev_mask, event_req->ev_reg_id,
					event_req->ev_req_id);
		if (!evt) {
			lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
					"2617 Failed allocation of event "
					"waiter\n");
			rc = -ENOMEM;
			goto job_error;
		}

		spin_lock_irqsave(&phba->ct_ev_lock, flags);
		list_add(&evt->node, &phba->ct_ev_waiters);
		lpfc_bsg_event_ref(evt);
		evt->wait_time_stamp = jiffies;
		spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
	}

	spin_lock_irqsave(&phba->ct_ev_lock, flags);
	evt->waiting = 1;
	dd_data->type = TYPE_EVT;
	dd_data->context_un.evt = evt;
	evt->set_job = job; /* for unsolicited command */
	job->dd_data = dd_data; /* for fc transport timeout callback*/
	spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
	return 0; /* call job done later */

job_error:
	if (dd_data != NULL)
		kfree(dd_data);

	job->dd_data = NULL;
	return rc;
}

/**
 * lpfc_bsg_hba_get_event - process a GET_EVENT bsg vendor command
 * @job: GET_EVENT fc_bsg_job
 **/
static int
lpfc_bsg_hba_get_event(struct fc_bsg_job *job)
{
	struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
	struct lpfc_hba *phba = vport->phba;
	struct get_ct_event *event_req;
	struct get_ct_event_reply *event_reply;
	struct lpfc_bsg_event *evt;
	struct event_data *evt_dat = NULL;
	unsigned long flags;
	uint32_t rc = 0;

	if (job->request_len <
	    sizeof(struct fc_bsg_request) + sizeof(struct get_ct_event)) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"2613 Received GET_CT_EVENT request below "
				"minimum size\n");
		rc = -EINVAL;
		goto job_error;
	}

	event_req = (struct get_ct_event *)
		job->request->rqst_data.h_vendor.vendor_cmd;

	event_reply = (struct get_ct_event_reply *)
		job->reply->reply_data.vendor_reply.vendor_rsp;
	spin_lock_irqsave(&phba->ct_ev_lock, flags);
	list_for_each_entry(evt, &phba->ct_ev_waiters, node) {
		if (evt->reg_id == event_req->ev_reg_id) {
			if (list_empty(&evt->events_to_get))
				break;
			lpfc_bsg_event_ref(evt);
			evt->wait_time_stamp = jiffies;
			evt_dat = list_entry(evt->events_to_get.prev,
					     struct event_data, node);
			list_del(&evt_dat->node);
			break;
		}
	}
	spin_unlock_irqrestore(&phba->ct_ev_lock, flags);

	/* The app may continue to ask for event data until it gets
	 * an error indicating that there isn't anymore
	 */
	if (evt_dat == NULL) {
		job->reply->reply_payload_rcv_len = 0;
		rc = -ENOENT;
		goto job_error;
	}

	if (evt_dat->len > job->request_payload.payload_len) {
		evt_dat->len = job->request_payload.payload_len;
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"2618 Truncated event data at %d "
				"bytes\n",
				job->request_payload.payload_len);
	}

	event_reply->type = evt_dat->type;
	event_reply->immed_data = evt_dat->immed_dat;
	if (evt_dat->len > 0)
		job->reply->reply_payload_rcv_len =
			sg_copy_from_buffer(job->request_payload.sg_list,
					    job->request_payload.sg_cnt,
					    evt_dat->data, evt_dat->len);
	else
		job->reply->reply_payload_rcv_len = 0;

	if (evt_dat) {
		kfree(evt_dat->data);
		kfree(evt_dat);
	}

	spin_lock_irqsave(&phba->ct_ev_lock, flags);
	lpfc_bsg_event_unref(evt);
	spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
	job->dd_data = NULL;
	job->reply->result = 0;
	job->job_done(job);
	return 0;

job_error:
	job->dd_data = NULL;
	job->reply->result = rc;
	return rc;
}

/**
 * lpfc_issue_ct_rsp_cmp - lpfc_issue_ct_rsp's completion handler
 * @phba: Pointer to HBA context object.
 * @cmdiocbq: Pointer to command iocb.
 * @rspiocbq: Pointer to response iocb.
 *
 * This function is the completion handler for iocbs issued using
 * lpfc_issue_ct_rsp_cmp function. This function is called by the
 * ring event handler function without any lock held. This function
 * can be called from both worker thread context and interrupt
 * context. This function also can be called from other thread which
 * cleans up the SLI layer objects.
 * This function copy the contents of the response iocb to the
 * response iocb memory object provided by the caller of
 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
 * sleeps for the iocb completion.
 **/
static void
lpfc_issue_ct_rsp_cmp(struct lpfc_hba *phba,
			struct lpfc_iocbq *cmdiocbq,
			struct lpfc_iocbq *rspiocbq)
{
	struct bsg_job_data *dd_data;
	struct fc_bsg_job *job;
	IOCB_t *rsp;
	struct lpfc_dmabuf *bmp;
	struct lpfc_nodelist *ndlp;
	unsigned long flags;
	int rc = 0;

	spin_lock_irqsave(&phba->ct_ev_lock, flags);
	dd_data = cmdiocbq->context2;
	/* normal completion and timeout crossed paths, already done */
	if (!dd_data) {
		spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
		return;
	}

	job = dd_data->context_un.iocb.set_job;
	bmp = dd_data->context_un.iocb.bmp;
	rsp = &rspiocbq->iocb;
	ndlp = dd_data->context_un.iocb.ndlp;

	pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
		     job->request_payload.sg_cnt, DMA_TO_DEVICE);

	if (rsp->ulpStatus) {
		if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
			switch (rsp->un.ulpWord[4] & 0xff) {
			case IOERR_SEQUENCE_TIMEOUT:
				rc = -ETIMEDOUT;
				break;
			case IOERR_INVALID_RPI:
				rc = -EFAULT;
				break;
			default:
				rc = -EACCES;
				break;
			}
		} else
			rc = -EACCES;
	} else
		job->reply->reply_payload_rcv_len =
			rsp->un.genreq64.bdl.bdeSize;

	lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
	lpfc_sli_release_iocbq(phba, cmdiocbq);
	lpfc_nlp_put(ndlp);
	kfree(bmp);
	kfree(dd_data);
	/* make error code available to userspace */
	job->reply->result = rc;
	job->dd_data = NULL;
	/* complete the job back to userspace */
	job->job_done(job);
	spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
	return;
}

/**
 * lpfc_issue_ct_rsp - issue a ct response
 * @phba: Pointer to HBA context object.
 * @job: Pointer to the job object.
 * @tag: tag index value into the ports context exchange array.
 * @bmp: Pointer to a dma buffer descriptor.
 * @num_entry: Number of enties in the bde.
 **/
static int
lpfc_issue_ct_rsp(struct lpfc_hba *phba, struct fc_bsg_job *job, uint32_t tag,
		  struct lpfc_dmabuf *bmp, int num_entry)
{
	IOCB_t *icmd;
	struct lpfc_iocbq *ctiocb = NULL;
	int rc = 0;
	struct lpfc_nodelist *ndlp = NULL;
	struct bsg_job_data *dd_data;
	uint32_t creg_val;

	/* allocate our bsg tracking structure */
	dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
	if (!dd_data) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"2736 Failed allocation of dd_data\n");
		rc = -ENOMEM;
		goto no_dd_data;
	}

	/* Allocate buffer for  command iocb */
	ctiocb = lpfc_sli_get_iocbq(phba);
	if (!ctiocb) {
		rc = -ENOMEM;
		goto no_ctiocb;
	}

	icmd = &ctiocb->iocb;
	icmd->un.xseq64.bdl.ulpIoTag32 = 0;
	icmd->un.xseq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
	icmd->un.xseq64.bdl.addrLow = putPaddrLow(bmp->phys);
	icmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
	icmd->un.xseq64.bdl.bdeSize = (num_entry * sizeof(struct ulp_bde64));
	icmd->un.xseq64.w5.hcsw.Fctl = (LS | LA);
	icmd->un.xseq64.w5.hcsw.Dfctl = 0;
	icmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_SOL_CTL;
	icmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;

	/* Fill in rest of iocb */
	icmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX;
	icmd->ulpBdeCount = 1;
	icmd->ulpLe = 1;
	icmd->ulpClass = CLASS3;
	if (phba->sli_rev == LPFC_SLI_REV4) {
		/* Do not issue unsol response if oxid not marked as valid */
		if (!(phba->ct_ctx[tag].flags & UNSOL_VALID)) {
			rc = IOCB_ERROR;
			goto issue_ct_rsp_exit;
		}
		icmd->ulpContext = phba->ct_ctx[tag].rxid;
		icmd->unsli3.rcvsli3.ox_id = phba->ct_ctx[tag].oxid;
		ndlp = lpfc_findnode_did(phba->pport, phba->ct_ctx[tag].SID);
		if (!ndlp) {
			lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
				 "2721 ndlp null for oxid %x SID %x\n",
					icmd->ulpContext,
					phba->ct_ctx[tag].SID);
			rc = IOCB_ERROR;
			goto issue_ct_rsp_exit;
		}

		/* Check if the ndlp is active */
		if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
			rc = -IOCB_ERROR;
			goto issue_ct_rsp_exit;
		}

		/* get a refernece count so the ndlp doesn't go away while
		 * we respond
		 */
		if (!lpfc_nlp_get(ndlp)) {
			rc = -IOCB_ERROR;
			goto issue_ct_rsp_exit;
		}

		icmd->un.ulpWord[3] =
				phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];

		/* The exchange is done, mark the entry as invalid */
		phba->ct_ctx[tag].flags &= ~UNSOL_VALID;
	} else
		icmd->ulpContext = (ushort) tag;

	icmd->ulpTimeout = phba->fc_ratov * 2;

	/* Xmit CT response on exchange <xid> */
	lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
		"2722 Xmit CT response on exchange x%x Data: x%x x%x x%x\n",
		icmd->ulpContext, icmd->ulpIoTag, tag, phba->link_state);

	ctiocb->iocb_cmpl = NULL;
	ctiocb->iocb_flag |= LPFC_IO_LIBDFC;
	ctiocb->vport = phba->pport;
	ctiocb->context3 = bmp;

	ctiocb->iocb_cmpl = lpfc_issue_ct_rsp_cmp;
	ctiocb->context2 = dd_data;
	ctiocb->context1 = ndlp;
	dd_data->type = TYPE_IOCB;
	dd_data->context_un.iocb.cmdiocbq = ctiocb;
	dd_data->context_un.iocb.rspiocbq = NULL;
	dd_data->context_un.iocb.set_job = job;
	dd_data->context_un.iocb.bmp = bmp;
	dd_data->context_un.iocb.ndlp = ndlp;

	if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
		if (lpfc_readl(phba->HCregaddr, &creg_val)) {
			rc = -IOCB_ERROR;
			goto issue_ct_rsp_exit;
		}
		creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
		writel(creg_val, phba->HCregaddr);
		readl(phba->HCregaddr); /* flush */
	}

	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0);

	if (rc == IOCB_SUCCESS)
		return 0; /* done for now */

issue_ct_rsp_exit:
	lpfc_sli_release_iocbq(phba, ctiocb);
no_ctiocb:
	kfree(dd_data);
no_dd_data:
	return rc;
}

/**
 * lpfc_bsg_send_mgmt_rsp - process a SEND_MGMT_RESP bsg vendor command
 * @job: SEND_MGMT_RESP fc_bsg_job
 **/
static int
lpfc_bsg_send_mgmt_rsp(struct fc_bsg_job *job)
{
	struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
	struct lpfc_hba *phba = vport->phba;
	struct send_mgmt_resp *mgmt_resp = (struct send_mgmt_resp *)
		job->request->rqst_data.h_vendor.vendor_cmd;
	struct ulp_bde64 *bpl;
	struct lpfc_dmabuf *bmp = NULL;
	struct scatterlist *sgel = NULL;
	int request_nseg;
	int numbde;
	dma_addr_t busaddr;
	uint32_t tag = mgmt_resp->tag;
	unsigned long reqbfrcnt =
			(unsigned long)job->request_payload.payload_len;
	int rc = 0;

	/* in case no data is transferred */
	job->reply->reply_payload_rcv_len = 0;

	if (!reqbfrcnt || (reqbfrcnt > (80 * BUF_SZ_4K))) {
		rc = -ERANGE;
		goto send_mgmt_rsp_exit;
	}

	bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
	if (!bmp) {
		rc = -ENOMEM;
		goto send_mgmt_rsp_exit;
	}

	bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
	if (!bmp->virt) {
		rc = -ENOMEM;
		goto send_mgmt_rsp_free_bmp;
	}

	INIT_LIST_HEAD(&bmp->list);
	bpl = (struct ulp_bde64 *) bmp->virt;
	request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list,
				  job->request_payload.sg_cnt, DMA_TO_DEVICE);
	for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) {
		busaddr = sg_dma_address(sgel);
		bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
		bpl->tus.f.bdeSize = sg_dma_len(sgel);
		bpl->tus.w = cpu_to_le32(bpl->tus.w);
		bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
		bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
		bpl++;
	}

	rc = lpfc_issue_ct_rsp(phba, job, tag, bmp, request_nseg);

	if (rc == IOCB_SUCCESS)
		return 0; /* done for now */

	/* TBD need to handle a timeout */
	pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
			  job->request_payload.sg_cnt, DMA_TO_DEVICE);
	rc = -EACCES;
	lpfc_mbuf_free(phba, bmp->virt, bmp->phys);

send_mgmt_rsp_free_bmp:
	kfree(bmp);
send_mgmt_rsp_exit:
	/* make error code available to userspace */
	job->reply->result = rc;
	job->dd_data = NULL;
	return rc;
}

/**
 * lpfc_bsg_diag_mode_enter - process preparing into device diag loopback mode
 * @phba: Pointer to HBA context object.
 *
 * This function is responsible for preparing driver for diag loopback
 * on device.
 */
static int
lpfc_bsg_diag_mode_enter(struct lpfc_hba *phba)
{
	struct lpfc_vport **vports;
	struct Scsi_Host *shost;
	struct lpfc_sli *psli;
	struct lpfc_sli_ring *pring;
	int i = 0;

	psli = &phba->sli;
	if (!psli)
		return -ENODEV;

	pring = &psli->ring[LPFC_FCP_RING];
	if (!pring)
		return -ENODEV;

	if ((phba->link_state == LPFC_HBA_ERROR) ||
	    (psli->sli_flag & LPFC_BLOCK_MGMT_IO) ||
	    (!(psli->sli_flag & LPFC_SLI_ACTIVE)))
		return -EACCES;

	vports = lpfc_create_vport_work_array(phba);
	if (vports) {
		for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
			shost = lpfc_shost_from_vport(vports[i]);
			scsi_block_requests(shost);
		}
		lpfc_destroy_vport_work_array(phba, vports);
	} else {
		shost = lpfc_shost_from_vport(phba->pport);
		scsi_block_requests(shost);
	}

	while (pring->txcmplq_cnt) {
		if (i++ > 500)  /* wait up to 5 seconds */
			break;
		msleep(10);
	}
	return 0;
}

/**
 * lpfc_bsg_diag_mode_exit - exit process from device diag loopback mode
 * @phba: Pointer to HBA context object.
 *
 * This function is responsible for driver exit processing of setting up
 * diag loopback mode on device.
 */
static void
lpfc_bsg_diag_mode_exit(struct lpfc_hba *phba)
{
	struct Scsi_Host *shost;
	struct lpfc_vport **vports;
	int i;

	vports = lpfc_create_vport_work_array(phba);
	if (vports) {
		for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
			shost = lpfc_shost_from_vport(vports[i]);
			scsi_unblock_requests(shost);
		}
		lpfc_destroy_vport_work_array(phba, vports);
	} else {
		shost = lpfc_shost_from_vport(phba->pport);
		scsi_unblock_requests(shost);
	}
	return;
}

/**
 * lpfc_sli3_bsg_diag_loopback_mode - process an sli3 bsg vendor command
 * @phba: Pointer to HBA context object.
 * @job: LPFC_BSG_VENDOR_DIAG_MODE
 *
 * This function is responsible for placing an sli3  port into diagnostic
 * loopback mode in order to perform a diagnostic loopback test.
 * All new scsi requests are blocked, a small delay is used to allow the
 * scsi requests to complete then the link is brought down. If the link is
 * is placed in loopback mode then scsi requests are again allowed
 * so the scsi mid-layer doesn't give up on the port.
 * All of this is done in-line.
 */
static int
lpfc_sli3_bsg_diag_loopback_mode(struct lpfc_hba *phba, struct fc_bsg_job *job)
{
	struct diag_mode_set *loopback_mode;
	uint32_t link_flags;
	uint32_t timeout;
	LPFC_MBOXQ_t *pmboxq  = NULL;
	int mbxstatus = MBX_SUCCESS;
	int i = 0;
	int rc = 0;

	/* no data to return just the return code */
	job->reply->reply_payload_rcv_len = 0;

	if (job->request_len < sizeof(struct fc_bsg_request) +
	    sizeof(struct diag_mode_set)) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"2738 Received DIAG MODE request size:%d "
				"below the minimum size:%d\n",
				job->request_len,
				(int)(sizeof(struct fc_bsg_request) +
				sizeof(struct diag_mode_set)));
		rc = -EINVAL;
		goto job_error;
	}

	rc = lpfc_bsg_diag_mode_enter(phba);
	if (rc)
		goto job_error;

	/* bring the link to diagnostic mode */
	loopback_mode = (struct diag_mode_set *)
		job->request->rqst_data.h_vendor.vendor_cmd;
	link_flags = loopback_mode->type;
	timeout = loopback_mode->timeout * 100;

	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (!pmboxq) {
		rc = -ENOMEM;
		goto loopback_mode_exit;
	}
	memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t));
	pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK;
	pmboxq->u.mb.mbxOwner = OWN_HOST;

	mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);

	if ((mbxstatus == MBX_SUCCESS) && (pmboxq->u.mb.mbxStatus == 0)) {
		/* wait for link down before proceeding */
		i = 0;
		while (phba->link_state != LPFC_LINK_DOWN) {
			if (i++ > timeout) {
				rc = -ETIMEDOUT;
				goto loopback_mode_exit;
			}
			msleep(10);
		}

		memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t));
		if (link_flags == INTERNAL_LOOP_BACK)
			pmboxq->u.mb.un.varInitLnk.link_flags = FLAGS_LOCAL_LB;
		else
			pmboxq->u.mb.un.varInitLnk.link_flags =
				FLAGS_TOPOLOGY_MODE_LOOP;

		pmboxq->u.mb.mbxCommand = MBX_INIT_LINK;
		pmboxq->u.mb.mbxOwner = OWN_HOST;

		mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq,
						     LPFC_MBOX_TMO);

		if ((mbxstatus != MBX_SUCCESS) || (pmboxq->u.mb.mbxStatus))
			rc = -ENODEV;
		else {
			spin_lock_irq(&phba->hbalock);
			phba->link_flag |= LS_LOOPBACK_MODE;
			spin_unlock_irq(&phba->hbalock);
			/* wait for the link attention interrupt */
			msleep(100);

			i = 0;
			while (phba->link_state != LPFC_HBA_READY) {
				if (i++ > timeout) {
					rc = -ETIMEDOUT;
					break;
				}

				msleep(10);
			}
		}

	} else
		rc = -ENODEV;

loopback_mode_exit:
	lpfc_bsg_diag_mode_exit(phba);

	/*
	 * Let SLI layer release mboxq if mbox command completed after timeout.
	 */
	if (pmboxq && mbxstatus != MBX_TIMEOUT)
		mempool_free(pmboxq, phba->mbox_mem_pool);

job_error:
	/* make error code available to userspace */
	job->reply->result = rc;
	/* complete the job back to userspace if no error */
	if (rc == 0)
		job->job_done(job);
	return rc;
}

/**
 * lpfc_sli4_bsg_set_link_diag_state - set sli4 link diag state
 * @phba: Pointer to HBA context object.
 * @diag: Flag for set link to diag or nomral operation state.
 *
 * This function is responsible for issuing a sli4 mailbox command for setting
 * link to either diag state or normal operation state.
 */
static int
lpfc_sli4_bsg_set_link_diag_state(struct lpfc_hba *phba, uint32_t diag)
{
	LPFC_MBOXQ_t *pmboxq;
	struct lpfc_mbx_set_link_diag_state *link_diag_state;
	uint32_t req_len, alloc_len;
	int mbxstatus = MBX_SUCCESS, rc;

	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (!pmboxq)
		return -ENOMEM;

	req_len = (sizeof(struct lpfc_mbx_set_link_diag_state) -
		   sizeof(struct lpfc_sli4_cfg_mhdr));
	alloc_len = lpfc_sli4_config(phba, pmboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
				LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_STATE,
				req_len, LPFC_SLI4_MBX_EMBED);
	if (alloc_len != req_len) {
		rc = -ENOMEM;
		goto link_diag_state_set_out;
	}
	lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
			"3128 Set link to diagnostic state:x%x (x%x/x%x)\n",
			diag, phba->sli4_hba.lnk_info.lnk_tp,
			phba->sli4_hba.lnk_info.lnk_no);

	link_diag_state = &pmboxq->u.mqe.un.link_diag_state;
	bf_set(lpfc_mbx_set_diag_state_link_num, &link_diag_state->u.req,
	       phba->sli4_hba.lnk_info.lnk_no);
	bf_set(lpfc_mbx_set_diag_state_link_type, &link_diag_state->u.req,
	       phba->sli4_hba.lnk_info.lnk_tp);
	if (diag)
		bf_set(lpfc_mbx_set_diag_state_diag,
		       &link_diag_state->u.req, 1);
	else
		bf_set(lpfc_mbx_set_diag_state_diag,
		       &link_diag_state->u.req, 0);

	mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);

	if ((mbxstatus == MBX_SUCCESS) && (pmboxq->u.mb.mbxStatus == 0))
		rc = 0;
	else
		rc = -ENODEV;

link_diag_state_set_out:
	if (pmboxq && (mbxstatus != MBX_TIMEOUT))
		mempool_free(pmboxq, phba->mbox_mem_pool);

	return rc;
}

/**
 * lpfc_sli4_bsg_set_internal_loopback - set sli4 internal loopback diagnostic
 * @phba: Pointer to HBA context object.
 *
 * This function is responsible for issuing a sli4 mailbox command for setting
 * up internal loopback diagnostic.
 */
static int
lpfc_sli4_bsg_set_internal_loopback(struct lpfc_hba *phba)
{
	LPFC_MBOXQ_t *pmboxq;
	uint32_t req_len, alloc_len;
	struct lpfc_mbx_set_link_diag_loopback *link_diag_loopback;
	int mbxstatus = MBX_SUCCESS, rc = 0;

	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (!pmboxq)
		return -ENOMEM;
	req_len = (sizeof(struct lpfc_mbx_set_link_diag_loopback) -
		   sizeof(struct lpfc_sli4_cfg_mhdr));
	alloc_len = lpfc_sli4_config(phba, pmboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
				LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_LOOPBACK,
				req_len, LPFC_SLI4_MBX_EMBED);
	if (alloc_len != req_len) {
		mempool_free(pmboxq, phba->mbox_mem_pool);
		return -ENOMEM;
	}
	link_diag_loopback = &pmboxq->u.mqe.un.link_diag_loopback;
	bf_set(lpfc_mbx_set_diag_state_link_num,
	       &link_diag_loopback->u.req, phba->sli4_hba.lnk_info.lnk_no);
	bf_set(lpfc_mbx_set_diag_state_link_type,
	       &link_diag_loopback->u.req, phba->sli4_hba.lnk_info.lnk_tp);
	bf_set(lpfc_mbx_set_diag_lpbk_type, &link_diag_loopback->u.req,
	       LPFC_DIAG_LOOPBACK_TYPE_SERDES);

	mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);
	if ((mbxstatus != MBX_SUCCESS) || (pmboxq->u.mb.mbxStatus)) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"3127 Failed setup loopback mode mailbox "
				"command, rc:x%x, status:x%x\n", mbxstatus,
				pmboxq->u.mb.mbxStatus);
		rc = -ENODEV;
	}
	if (pmboxq && (mbxstatus != MBX_TIMEOUT))
		mempool_free(pmboxq, phba->mbox_mem_pool);
	return rc;
}

/**
 * lpfc_sli4_diag_fcport_reg_setup - setup port registrations for diagnostic
 * @phba: Pointer to HBA context object.
 *
 * This function set up SLI4 FC port registrations for diagnostic run, which
 * includes all the rpis, vfi, and also vpi.
 */
static int
lpfc_sli4_diag_fcport_reg_setup(struct lpfc_hba *phba)
{
	int rc;

	if (phba->pport->fc_flag & FC_VFI_REGISTERED) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"3136 Port still had vfi registered: "
				"mydid:x%x, fcfi:%d, vfi:%d, vpi:%d\n",
				phba->pport->fc_myDID, phba->fcf.fcfi,
				phba->sli4_hba.vfi_ids[phba->pport->vfi],
				phba->vpi_ids[phba->pport->vpi]);
		return -EINVAL;
	}
	rc = lpfc_issue_reg_vfi(phba->pport);
	return rc;
}

/**
 * lpfc_sli4_bsg_diag_loopback_mode - process an sli4 bsg vendor command
 * @phba: Pointer to HBA context object.
 * @job: LPFC_BSG_VENDOR_DIAG_MODE
 *
 * This function is responsible for placing an sli4 port into diagnostic
 * loopback mode in order to perform a diagnostic loopback test.
 */
static int
lpfc_sli4_bsg_diag_loopback_mode(struct lpfc_hba *phba, struct fc_bsg_job *job)
{
	struct diag_mode_set *loopback_mode;
	uint32_t link_flags, timeout;
	int i, rc = 0;

	/* no data to return just the return code */
	job->reply->reply_payload_rcv_len = 0;

	if (job->request_len < sizeof(struct fc_bsg_request) +
	    sizeof(struct diag_mode_set)) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"3011 Received DIAG MODE request size:%d "
				"below the minimum size:%d\n",
				job->request_len,
				(int)(sizeof(struct fc_bsg_request) +
				sizeof(struct diag_mode_set)));
		rc = -EINVAL;
		goto job_error;
	}

	rc = lpfc_bsg_diag_mode_enter(phba);
	if (rc)
		goto job_error;

	/* indicate we are in loobpack diagnostic mode */
	spin_lock_irq(&phba->hbalock);
	phba->link_flag |= LS_LOOPBACK_MODE;
	spin_unlock_irq(&phba->hbalock);

	/* reset port to start frome scratch */
	rc = lpfc_selective_reset(phba);
	if (rc)
		goto job_error;

	/* bring the link to diagnostic mode */
	lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
			"3129 Bring link to diagnostic state.\n");
	loopback_mode = (struct diag_mode_set *)
		job->request->rqst_data.h_vendor.vendor_cmd;
	link_flags = loopback_mode->type;
	timeout = loopback_mode->timeout * 100;

	rc = lpfc_sli4_bsg_set_link_diag_state(phba, 1);
	if (rc) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"3130 Failed to bring link to diagnostic "
				"state, rc:x%x\n", rc);
		goto loopback_mode_exit;
	}

	/* wait for link down before proceeding */
	i = 0;
	while (phba->link_state != LPFC_LINK_DOWN) {
		if (i++ > timeout) {
			rc = -ETIMEDOUT;
			lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
					"3131 Timeout waiting for link to "
					"diagnostic mode, timeout:%d ms\n",
					timeout * 10);
			goto loopback_mode_exit;
		}
		msleep(10);
	}

	/* set up loopback mode */
	lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
			"3132 Set up loopback mode:x%x\n", link_flags);

	if (link_flags == INTERNAL_LOOP_BACK)
		rc = lpfc_sli4_bsg_set_internal_loopback(phba);
	else if (link_flags == EXTERNAL_LOOP_BACK)
		rc = lpfc_hba_init_link_fc_topology(phba,
						    FLAGS_TOPOLOGY_MODE_PT_PT,
						    MBX_NOWAIT);
	else {
		rc = -EINVAL;
		lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
				"3141 Loopback mode:x%x not supported\n",
				link_flags);
		goto loopback_mode_exit;
	}

	if (!rc) {
		/* wait for the link attention interrupt */
		msleep(100);
		i = 0;
		while (phba->link_state < LPFC_LINK_UP) {
			if (i++ > timeout) {
				rc = -ETIMEDOUT;
				lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
					"3137 Timeout waiting for link up "
					"in loopback mode, timeout:%d ms\n",
					timeout * 10);
				break;
			}
			msleep(10);
		}
	}

	/* port resource registration setup for loopback diagnostic */
	if (!rc) {
		/* set up a none zero myDID for loopback test */
		phba->pport->fc_myDID = 1;
		rc = lpfc_sli4_diag_fcport_reg_setup(phba);
	} else
		goto loopback_mode_exit;

	if (!rc) {
		/* wait for the port ready */
		msleep(100);
		i = 0;
		while (phba->link_state != LPFC_HBA_READY) {
			if (i++ > timeout) {
				rc = -ETIMEDOUT;
				lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
					"3133 Timeout waiting for port "
					"loopback mode ready, timeout:%d ms\n",
					timeout * 10);
				break;
			}
			msleep(10);
		}
	}

loopback_mode_exit:
	/* clear loopback diagnostic mode */
	if (rc) {
		spin_lock_irq(&phba->hbalock);
		phba->link_flag &= ~LS_LOOPBACK_MODE;
		spin_unlock_irq(&phba->hbalock);
	}
	lpfc_bsg_diag_mode_exit(phba);

job_error:
	/* make error code available to userspace */
	job->reply->result = rc;
	/* complete the job back to userspace if no error */
	if (rc == 0)
		job->job_done(job);
	return rc;
}

/**
 * lpfc_bsg_diag_loopback_mode - bsg vendor command for diag loopback mode
 * @job: LPFC_BSG_VENDOR_DIAG_MODE
 *
 * This function is responsible for responding to check and dispatch bsg diag
 * command from the user to proper driver action routines.
 */
static int
lpfc_bsg_diag_loopback_mode(struct fc_bsg_job *job)
{
	struct Scsi_Host *shost;
	struct lpfc_vport *vport;
	struct lpfc_hba *phba;
	int rc;

	shost = job->shost;
	if (!shost)
		return -ENODEV;
	vport = (struct lpfc_vport *)job->shost->hostdata;
	if (!vport)
		return -ENODEV;
	phba = vport->phba;
	if (!phba)
		return -ENODEV;

	if (phba->sli_rev < LPFC_SLI_REV4)
		rc = lpfc_sli3_bsg_diag_loopback_mode(phba, job);
	else if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
		 LPFC_SLI_INTF_IF_TYPE_2)
		rc = lpfc_sli4_bsg_diag_loopback_mode(phba, job);
	else
		rc = -ENODEV;

	return rc;
}

/**
 * lpfc_sli4_bsg_diag_mode_end - sli4 bsg vendor command for ending diag mode
 * @job: LPFC_BSG_VENDOR_DIAG_MODE_END
 *
 * This function is responsible for responding to check and dispatch bsg diag
 * command from the user to proper driver action routines.
 */
static int
lpfc_sli4_bsg_diag_mode_end(struct fc_bsg_job *job)
{
	struct Scsi_Host *shost;
	struct lpfc_vport *vport;
	struct lpfc_hba *phba;
	struct diag_mode_set *loopback_mode_end_cmd;
	uint32_t timeout;
	int rc, i;

	shost = job->shost;
	if (!shost)
		return -ENODEV;
	vport = (struct lpfc_vport *)job->shost->hostdata;
	if (!vport)
		return -ENODEV;
	phba = vport->phba;
	if (!phba)
		return -ENODEV;

	if (phba->sli_rev < LPFC_SLI_REV4)
		return -ENODEV;
	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
	    LPFC_SLI_INTF_IF_TYPE_2)
		return -ENODEV;

	/* clear loopback diagnostic mode */
	spin_lock_irq(&phba->hbalock);
	phba->link_flag &= ~LS_LOOPBACK_MODE;
	spin_unlock_irq(&phba->hbalock);
	loopback_mode_end_cmd = (struct diag_mode_set *)
			job->request->rqst_data.h_vendor.vendor_cmd;
	timeout = loopback_mode_end_cmd->timeout * 100;

	rc = lpfc_sli4_bsg_set_link_diag_state(phba, 0);
	if (rc) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"3139 Failed to bring link to diagnostic "
				"state, rc:x%x\n", rc);
		goto loopback_mode_end_exit;
	}

	/* wait for link down before proceeding */
	i = 0;
	while (phba->link_state != LPFC_LINK_DOWN) {
		if (i++ > timeout) {
			rc = -ETIMEDOUT;
			lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
					"3140 Timeout waiting for link to "
					"diagnostic mode_end, timeout:%d ms\n",
					timeout * 10);
			/* there is nothing much we can do here */
			break;
		}
		msleep(10);
	}

	/* reset port resource registrations */
	rc = lpfc_selective_reset(phba);
	phba->pport->fc_myDID = 0;

loopback_mode_end_exit:
	/* make return code available to userspace */
	job->reply->result = rc;
	/* complete the job back to userspace if no error */
	if (rc == 0)
		job->job_done(job);
	return rc;
}

/**
 * lpfc_sli4_bsg_link_diag_test - sli4 bsg vendor command for diag link test
 * @job: LPFC_BSG_VENDOR_DIAG_LINK_TEST
 *
 * This function is to perform SLI4 diag link test request from the user
 * applicaiton.
 */
static int
lpfc_sli4_bsg_link_diag_test(struct fc_bsg_job *job)
{
	struct Scsi_Host *shost;
	struct lpfc_vport *vport;
	struct lpfc_hba *phba;
	LPFC_MBOXQ_t *pmboxq;
	struct sli4_link_diag *link_diag_test_cmd;
	uint32_t req_len, alloc_len;
	uint32_t timeout;
	struct lpfc_mbx_run_link_diag_test *run_link_diag_test;
	union lpfc_sli4_cfg_shdr *shdr;
	uint32_t shdr_status, shdr_add_status;
	struct diag_status *diag_status_reply;
	int mbxstatus, rc = 0;

	shost = job->shost;
	if (!shost) {
		rc = -ENODEV;
		goto job_error;
	}
	vport = (struct lpfc_vport *)job->shost->hostdata;
	if (!vport) {
		rc = -ENODEV;
		goto job_error;
	}
	phba = vport->phba;
	if (!phba) {
		rc = -ENODEV;
		goto job_error;
	}

	if (phba->sli_rev < LPFC_SLI_REV4) {
		rc = -ENODEV;
		goto job_error;
	}
	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
	    LPFC_SLI_INTF_IF_TYPE_2) {
		rc = -ENODEV;
		goto job_error;
	}

	if (job->request_len < sizeof(struct fc_bsg_request) +
	    sizeof(struct sli4_link_diag)) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"3013 Received LINK DIAG TEST request "
				" size:%d below the minimum size:%d\n",
				job->request_len,
				(int)(sizeof(struct fc_bsg_request) +
				sizeof(struct sli4_link_diag)));
		rc = -EINVAL;
		goto job_error;
	}

	rc = lpfc_bsg_diag_mode_enter(phba);
	if (rc)
		goto job_error;

	link_diag_test_cmd = (struct sli4_link_diag *)
			 job->request->rqst_data.h_vendor.vendor_cmd;
	timeout = link_diag_test_cmd->timeout * 100;

	rc = lpfc_sli4_bsg_set_link_diag_state(phba, 1);

	if (rc)
		goto job_error;

	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (!pmboxq) {
		rc = -ENOMEM;
		goto link_diag_test_exit;
	}

	req_len = (sizeof(struct lpfc_mbx_set_link_diag_state) -
		   sizeof(struct lpfc_sli4_cfg_mhdr));
	alloc_len = lpfc_sli4_config(phba, pmboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
				     LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_STATE,
				     req_len, LPFC_SLI4_MBX_EMBED);
	if (alloc_len != req_len) {
		rc = -ENOMEM;
		goto link_diag_test_exit;
	}
	run_link_diag_test = &pmboxq->u.mqe.un.link_diag_test;
	bf_set(lpfc_mbx_run_diag_test_link_num, &run_link_diag_test->u.req,
	       phba->sli4_hba.lnk_info.lnk_no);
	bf_set(lpfc_mbx_run_diag_test_link_type, &run_link_diag_test->u.req,
	       phba->sli4_hba.lnk_info.lnk_tp);
	bf_set(lpfc_mbx_run_diag_test_test_id, &run_link_diag_test->u.req,
	       link_diag_test_cmd->test_id);
	bf_set(lpfc_mbx_run_diag_test_loops, &run_link_diag_test->u.req,
	       link_diag_test_cmd->loops);
	bf_set(lpfc_mbx_run_diag_test_test_ver, &run_link_diag_test->u.req,
	       link_diag_test_cmd->test_version);
	bf_set(lpfc_mbx_run_diag_test_err_act, &run_link_diag_test->u.req,
	       link_diag_test_cmd->error_action);

	mbxstatus = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);

	shdr = (union lpfc_sli4_cfg_shdr *)
		&pmboxq->u.mqe.un.sli4_config.header.cfg_shdr;
	shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
	shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
	if (shdr_status || shdr_add_status || mbxstatus) {
		lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
				"3010 Run link diag test mailbox failed with "
				"mbx_status x%x status x%x, add_status x%x\n",
				mbxstatus, shdr_status, shdr_add_status);
	}

	diag_status_reply = (struct diag_status *)
			    job->reply->reply_data.vendor_reply.vendor_rsp;

	if (job->reply_len <
	    sizeof(struct fc_bsg_request) + sizeof(struct diag_status)) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"3012 Received Run link diag test reply "
				"below minimum size (%d): reply_len:%d\n",
				(int)(sizeof(struct fc_bsg_request) +
				sizeof(struct diag_status)),
				job->reply_len);
		rc = -EINVAL;
		goto job_error;
	}

	diag_status_reply->mbox_status = mbxstatus;
	diag_status_reply->shdr_status = shdr_status;
	diag_status_reply->shdr_add_status = shdr_add_status;

link_diag_test_exit:
	rc = lpfc_sli4_bsg_set_link_diag_state(phba, 0);

	if (pmboxq)
		mempool_free(pmboxq, phba->mbox_mem_pool);

	lpfc_bsg_diag_mode_exit(phba);

job_error:
	/* make error code available to userspace */
	job->reply->result = rc;
	/* complete the job back to userspace if no error */
	if (rc == 0)
		job->job_done(job);
	return rc;
}

/**
 * lpfcdiag_loop_self_reg - obtains a remote port login id
 * @phba: Pointer to HBA context object
 * @rpi: Pointer to a remote port login id
 *
 * This function obtains a remote port login id so the diag loopback test
 * can send and receive its own unsolicited CT command.
 **/
static int lpfcdiag_loop_self_reg(struct lpfc_hba *phba, uint16_t *rpi)
{
	LPFC_MBOXQ_t *mbox;
	struct lpfc_dmabuf *dmabuff;
	int status;

	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (!mbox)
		return -ENOMEM;

	if (phba->sli_rev < LPFC_SLI_REV4)
		status = lpfc_reg_rpi(phba, 0, phba->pport->fc_myDID,
				(uint8_t *)&phba->pport->fc_sparam,
				mbox, *rpi);
	else {
		*rpi = lpfc_sli4_alloc_rpi(phba);
		status = lpfc_reg_rpi(phba, phba->pport->vpi,
				phba->pport->fc_myDID,
				(uint8_t *)&phba->pport->fc_sparam,
				mbox, *rpi);
	}

	if (status) {
		mempool_free(mbox, phba->mbox_mem_pool);
		if (phba->sli_rev == LPFC_SLI_REV4)
			lpfc_sli4_free_rpi(phba, *rpi);
		return -ENOMEM;
	}

	dmabuff = (struct lpfc_dmabuf *) mbox->context1;
	mbox->context1 = NULL;
	mbox->context2 = NULL;
	status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);

	if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) {
		lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys);
		kfree(dmabuff);
		if (status != MBX_TIMEOUT)
			mempool_free(mbox, phba->mbox_mem_pool);
		if (phba->sli_rev == LPFC_SLI_REV4)
			lpfc_sli4_free_rpi(phba, *rpi);
		return -ENODEV;
	}

	if (phba->sli_rev < LPFC_SLI_REV4)
		*rpi = mbox->u.mb.un.varWords[0];

	lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys);
	kfree(dmabuff);
	mempool_free(mbox, phba->mbox_mem_pool);
	return 0;
}

/**
 * lpfcdiag_loop_self_unreg - unregs from the rpi
 * @phba: Pointer to HBA context object
 * @rpi: Remote port login id
 *
 * This function unregisters the rpi obtained in lpfcdiag_loop_self_reg
 **/
static int lpfcdiag_loop_self_unreg(struct lpfc_hba *phba, uint16_t rpi)
{
	LPFC_MBOXQ_t *mbox;
	int status;

	/* Allocate mboxq structure */
	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (mbox == NULL)
		return -ENOMEM;

	if (phba->sli_rev < LPFC_SLI_REV4)
		lpfc_unreg_login(phba, 0, rpi, mbox);
	else
		lpfc_unreg_login(phba, phba->pport->vpi,
				 phba->sli4_hba.rpi_ids[rpi], mbox);

	status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);

	if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) {
		if (status != MBX_TIMEOUT)
			mempool_free(mbox, phba->mbox_mem_pool);
		return -EIO;
	}
	mempool_free(mbox, phba->mbox_mem_pool);
	if (phba->sli_rev == LPFC_SLI_REV4)
		lpfc_sli4_free_rpi(phba, rpi);
	return 0;
}

/**
 * lpfcdiag_loop_get_xri - obtains the transmit and receive ids
 * @phba: Pointer to HBA context object
 * @rpi: Remote port login id
 * @txxri: Pointer to transmit exchange id
 * @rxxri: Pointer to response exchabge id
 *
 * This function obtains the transmit and receive ids required to send
 * an unsolicited ct command with a payload. A special lpfc FsType and CmdRsp
 * flags are used to the unsolicted response handler is able to process
 * the ct command sent on the same port.
 **/
static int lpfcdiag_loop_get_xri(struct lpfc_hba *phba, uint16_t rpi,
			 uint16_t *txxri, uint16_t * rxxri)
{
	struct lpfc_bsg_event *evt;
	struct lpfc_iocbq *cmdiocbq, *rspiocbq;
	IOCB_t *cmd, *rsp;
	struct lpfc_dmabuf *dmabuf;
	struct ulp_bde64 *bpl = NULL;
	struct lpfc_sli_ct_request *ctreq = NULL;
	int ret_val = 0;
	int time_left;
	int iocb_stat = 0;
	unsigned long flags;

	*txxri = 0;
	*rxxri = 0;
	evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid,
				SLI_CT_ELX_LOOPBACK);
	if (!evt)
		return -ENOMEM;

	spin_lock_irqsave(&phba->ct_ev_lock, flags);
	list_add(&evt->node, &phba->ct_ev_waiters);
	lpfc_bsg_event_ref(evt);
	spin_unlock_irqrestore(&phba->ct_ev_lock, flags);

	cmdiocbq = lpfc_sli_get_iocbq(phba);
	rspiocbq = lpfc_sli_get_iocbq(phba);

	dmabuf = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
	if (dmabuf) {
		dmabuf->virt = lpfc_mbuf_alloc(phba, 0, &dmabuf->phys);
		if (dmabuf->virt) {
			INIT_LIST_HEAD(&dmabuf->list);
			bpl = (struct ulp_bde64 *) dmabuf->virt;
			memset(bpl, 0, sizeof(*bpl));
			ctreq = (struct lpfc_sli_ct_request *)(bpl + 1);
			bpl->addrHigh =
				le32_to_cpu(putPaddrHigh(dmabuf->phys +
					sizeof(*bpl)));
			bpl->addrLow =
				le32_to_cpu(putPaddrLow(dmabuf->phys +
					sizeof(*bpl)));
			bpl->tus.f.bdeFlags = 0;
			bpl->tus.f.bdeSize = ELX_LOOPBACK_HEADER_SZ;
			bpl->tus.w = le32_to_cpu(bpl->tus.w);
		}
	}

	if (cmdiocbq == NULL || rspiocbq == NULL ||
	    dmabuf == NULL || bpl == NULL || ctreq == NULL ||
		dmabuf->virt == NULL) {
		ret_val = -ENOMEM;
		goto err_get_xri_exit;
	}

	cmd = &cmdiocbq->iocb;
	rsp = &rspiocbq->iocb;

	memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ);

	ctreq->RevisionId.bits.Revision = SLI_CT_REVISION;
	ctreq->RevisionId.bits.InId = 0;
	ctreq->FsType = SLI_CT_ELX_LOOPBACK;
	ctreq->FsSubType = 0;
	ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_XRI_SETUP;
	ctreq->CommandResponse.bits.Size = 0;


	cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(dmabuf->phys);
	cmd->un.xseq64.bdl.addrLow = putPaddrLow(dmabuf->phys);
	cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
	cmd->un.xseq64.bdl.bdeSize = sizeof(*bpl);

	cmd->un.xseq64.w5.hcsw.Fctl = LA;
	cmd->un.xseq64.w5.hcsw.Dfctl = 0;
	cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
	cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;

	cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CR;
	cmd->ulpBdeCount = 1;
	cmd->ulpLe = 1;
	cmd->ulpClass = CLASS3;
	cmd->ulpContext = rpi;

	cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
	cmdiocbq->vport = phba->pport;

	iocb_stat = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq,
				rspiocbq,
				(phba->fc_ratov * 2)
				+ LPFC_DRVR_TIMEOUT);
	if (iocb_stat) {
		ret_val = -EIO;
		goto err_get_xri_exit;
	}
	*txxri =  rsp->ulpContext;

	evt->waiting = 1;
	evt->wait_time_stamp = jiffies;
	time_left = wait_event_interruptible_timeout(
		evt->wq, !list_empty(&evt->events_to_see),
		((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT) * HZ);
	if (list_empty(&evt->events_to_see))
		ret_val = (time_left) ? -EINTR : -ETIMEDOUT;
	else {
		spin_lock_irqsave(&phba->ct_ev_lock, flags);
		list_move(evt->events_to_see.prev, &evt->events_to_get);
		spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
		*rxxri = (list_entry(evt->events_to_get.prev,
				     typeof(struct event_data),
				     node))->immed_dat;
	}
	evt->waiting = 0;

err_get_xri_exit:
	spin_lock_irqsave(&phba->ct_ev_lock, flags);
	lpfc_bsg_event_unref(evt); /* release ref */
	lpfc_bsg_event_unref(evt); /* delete */
	spin_unlock_irqrestore(&phba->ct_ev_lock, flags);

	if (dmabuf) {
		if (dmabuf->virt)
			lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
		kfree(dmabuf);
	}

	if (cmdiocbq && (iocb_stat != IOCB_TIMEDOUT))
		lpfc_sli_release_iocbq(phba, cmdiocbq);
	if (rspiocbq)
		lpfc_sli_release_iocbq(phba, rspiocbq);
	return ret_val;
}

/**
 * lpfc_bsg_dma_page_alloc - allocate a bsg mbox page sized dma buffers
 * @phba: Pointer to HBA context object
 *
 * This function allocates BSG_MBOX_SIZE (4KB) page size dma buffer and.
 * retruns the pointer to the buffer.
 **/
static struct lpfc_dmabuf *
lpfc_bsg_dma_page_alloc(struct lpfc_hba *phba)
{
	struct lpfc_dmabuf *dmabuf;
	struct pci_dev *pcidev = phba->pcidev;

	/* allocate dma buffer struct */
	dmabuf = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
	if (!dmabuf)
		return NULL;

	INIT_LIST_HEAD(&dmabuf->list);

	/* now, allocate dma buffer */
	dmabuf->virt = dma_alloc_coherent(&pcidev->dev, BSG_MBOX_SIZE,
					  &(dmabuf->phys), GFP_KERNEL);

	if (!dmabuf->virt) {
		kfree(dmabuf);
		return NULL;
	}
	memset((uint8_t *)dmabuf->virt, 0, BSG_MBOX_SIZE);

	return dmabuf;
}

/**
 * lpfc_bsg_dma_page_free - free a bsg mbox page sized dma buffer
 * @phba: Pointer to HBA context object.
 * @dmabuf: Pointer to the bsg mbox page sized dma buffer descriptor.
 *
 * This routine just simply frees a dma buffer and its associated buffer
 * descriptor referred by @dmabuf.
 **/
static void
lpfc_bsg_dma_page_free(struct lpfc_hba *phba, struct lpfc_dmabuf *dmabuf)
{
	struct pci_dev *pcidev = phba->pcidev;

	if (!dmabuf)
		return;

	if (dmabuf->virt)
		dma_free_coherent(&pcidev->dev, BSG_MBOX_SIZE,
				  dmabuf->virt, dmabuf->phys);
	kfree(dmabuf);
	return;
}

/**
 * lpfc_bsg_dma_page_list_free - free a list of bsg mbox page sized dma buffers
 * @phba: Pointer to HBA context object.
 * @dmabuf_list: Pointer to a list of bsg mbox page sized dma buffer descs.
 *
 * This routine just simply frees all dma buffers and their associated buffer
 * descriptors referred by @dmabuf_list.
 **/
static void
lpfc_bsg_dma_page_list_free(struct lpfc_hba *phba,
			    struct list_head *dmabuf_list)
{
	struct lpfc_dmabuf *dmabuf, *next_dmabuf;

	if (list_empty(dmabuf_list))
		return;

	list_for_each_entry_safe(dmabuf, next_dmabuf, dmabuf_list, list) {
		list_del_init(&dmabuf->list);
		lpfc_bsg_dma_page_free(phba, dmabuf);
	}
	return;
}

/**
 * diag_cmd_data_alloc - fills in a bde struct with dma buffers
 * @phba: Pointer to HBA context object
 * @bpl: Pointer to 64 bit bde structure
 * @size: Number of bytes to process
 * @nocopydata: Flag to copy user data into the allocated buffer
 *
 * This function allocates page size buffers and populates an lpfc_dmabufext.
 * If allowed the user data pointed to with indataptr is copied into the kernel
 * memory. The chained list of page size buffers is returned.
 **/
static struct lpfc_dmabufext *
diag_cmd_data_alloc(struct lpfc_hba *phba,
		   struct ulp_bde64 *bpl, uint32_t size,
		   int nocopydata)
{
	struct lpfc_dmabufext *mlist = NULL;
	struct lpfc_dmabufext *dmp;
	int cnt, offset = 0, i = 0;
	struct pci_dev *pcidev;

	pcidev = phba->pcidev;

	while (size) {
		/* We get chunks of 4K */
		if (size > BUF_SZ_4K)
			cnt = BUF_SZ_4K;
		else
			cnt = size;

		/* allocate struct lpfc_dmabufext buffer header */
		dmp = kmalloc(sizeof(struct lpfc_dmabufext), GFP_KERNEL);
		if (!dmp)
			goto out;

		INIT_LIST_HEAD(&dmp->dma.list);

		/* Queue it to a linked list */
		if (mlist)
			list_add_tail(&dmp->dma.list, &mlist->dma.list);
		else
			mlist = dmp;

		/* allocate buffer */
		dmp->dma.virt = dma_alloc_coherent(&pcidev->dev,
						   cnt,
						   &(dmp->dma.phys),
						   GFP_KERNEL);

		if (!dmp->dma.virt)
			goto out;

		dmp->size = cnt;

		if (nocopydata) {
			bpl->tus.f.bdeFlags = 0;
			pci_dma_sync_single_for_device(phba->pcidev,
				dmp->dma.phys, LPFC_BPL_SIZE, PCI_DMA_TODEVICE);

		} else {
			memset((uint8_t *)dmp->dma.virt, 0, cnt);
			bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
		}

		/* build buffer ptr list for IOCB */
		bpl->addrLow = le32_to_cpu(putPaddrLow(dmp->dma.phys));
		bpl->addrHigh = le32_to_cpu(putPaddrHigh(dmp->dma.phys));
		bpl->tus.f.bdeSize = (ushort) cnt;
		bpl->tus.w = le32_to_cpu(bpl->tus.w);
		bpl++;

		i++;
		offset += cnt;
		size -= cnt;
	}

	mlist->flag = i;
	return mlist;
out:
	diag_cmd_data_free(phba, mlist);
	return NULL;
}

/**
 * lpfcdiag_loop_post_rxbufs - post the receive buffers for an unsol CT cmd
 * @phba: Pointer to HBA context object
 * @rxxri: Receive exchange id
 * @len: Number of data bytes
 *
 * This function allocates and posts a data buffer of sufficient size to receive
 * an unsolicted CT command.
 **/
static int lpfcdiag_loop_post_rxbufs(struct lpfc_hba *phba, uint16_t rxxri,
			     size_t len)
{
	struct lpfc_sli *psli = &phba->sli;
	struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
	struct lpfc_iocbq *cmdiocbq;
	IOCB_t *cmd = NULL;
	struct list_head head, *curr, *next;
	struct lpfc_dmabuf *rxbmp;
	struct lpfc_dmabuf *dmp;
	struct lpfc_dmabuf *mp[2] = {NULL, NULL};
	struct ulp_bde64 *rxbpl = NULL;
	uint32_t num_bde;
	struct lpfc_dmabufext *rxbuffer = NULL;
	int ret_val = 0;
	int iocb_stat;
	int i = 0;

	cmdiocbq = lpfc_sli_get_iocbq(phba);
	rxbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
	if (rxbmp != NULL) {
		rxbmp->virt = lpfc_mbuf_alloc(phba, 0, &rxbmp->phys);
		if (rxbmp->virt) {
			INIT_LIST_HEAD(&rxbmp->list);
			rxbpl = (struct ulp_bde64 *) rxbmp->virt;
			rxbuffer = diag_cmd_data_alloc(phba, rxbpl, len, 0);
		}
	}

	if (!cmdiocbq || !rxbmp || !rxbpl || !rxbuffer) {
		ret_val = -ENOMEM;
		goto err_post_rxbufs_exit;
	}

	/* Queue buffers for the receive exchange */
	num_bde = (uint32_t)rxbuffer->flag;
	dmp = &rxbuffer->dma;

	cmd = &cmdiocbq->iocb;
	i = 0;

	INIT_LIST_HEAD(&head);
	list_add_tail(&head, &dmp->list);
	list_for_each_safe(curr, next, &head) {
		mp[i] = list_entry(curr, struct lpfc_dmabuf, list);
		list_del(curr);

		if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
			mp[i]->buffer_tag = lpfc_sli_get_buffer_tag(phba);
			cmd->un.quexri64cx.buff.bde.addrHigh =
				putPaddrHigh(mp[i]->phys);
			cmd->un.quexri64cx.buff.bde.addrLow =
				putPaddrLow(mp[i]->phys);
			cmd->un.quexri64cx.buff.bde.tus.f.bdeSize =
				((struct lpfc_dmabufext *)mp[i])->size;
			cmd->un.quexri64cx.buff.buffer_tag = mp[i]->buffer_tag;
			cmd->ulpCommand = CMD_QUE_XRI64_CX;
			cmd->ulpPU = 0;
			cmd->ulpLe = 1;
			cmd->ulpBdeCount = 1;
			cmd->unsli3.que_xri64cx_ext_words.ebde_count = 0;

		} else {
			cmd->un.cont64[i].addrHigh = putPaddrHigh(mp[i]->phys);
			cmd->un.cont64[i].addrLow = putPaddrLow(mp[i]->phys);
			cmd->un.cont64[i].tus.f.bdeSize =
				((struct lpfc_dmabufext *)mp[i])->size;
					cmd->ulpBdeCount = ++i;

			if ((--num_bde > 0) && (i < 2))
				continue;

			cmd->ulpCommand = CMD_QUE_XRI_BUF64_CX;
			cmd->ulpLe = 1;
		}

		cmd->ulpClass = CLASS3;
		cmd->ulpContext = rxxri;

		iocb_stat = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq,
						0);
		if (iocb_stat == IOCB_ERROR) {
			diag_cmd_data_free(phba,
				(struct lpfc_dmabufext *)mp[0]);
			if (mp[1])
				diag_cmd_data_free(phba,
					  (struct lpfc_dmabufext *)mp[1]);
			dmp = list_entry(next, struct lpfc_dmabuf, list);
			ret_val = -EIO;
			goto err_post_rxbufs_exit;
		}

		lpfc_sli_ringpostbuf_put(phba, pring, mp[0]);
		if (mp[1]) {
			lpfc_sli_ringpostbuf_put(phba, pring, mp[1]);
			mp[1] = NULL;
		}

		/* The iocb was freed by lpfc_sli_issue_iocb */
		cmdiocbq = lpfc_sli_get_iocbq(phba);
		if (!cmdiocbq) {
			dmp = list_entry(next, struct lpfc_dmabuf, list);
			ret_val = -EIO;
			goto err_post_rxbufs_exit;
		}

		cmd = &cmdiocbq->iocb;
		i = 0;
	}
	list_del(&head);

err_post_rxbufs_exit:

	if (rxbmp) {
		if (rxbmp->virt)
			lpfc_mbuf_free(phba, rxbmp->virt, rxbmp->phys);
		kfree(rxbmp);
	}

	if (cmdiocbq)
		lpfc_sli_release_iocbq(phba, cmdiocbq);
	return ret_val;
}

/**
 * lpfc_bsg_diag_loopback_run - run loopback on a port by issue ct cmd to itself
 * @job: LPFC_BSG_VENDOR_DIAG_TEST fc_bsg_job
 *
 * This function receives a user data buffer to be transmitted and received on
 * the same port, the link must be up and in loopback mode prior
 * to being called.
 * 1. A kernel buffer is allocated to copy the user data into.
 * 2. The port registers with "itself".
 * 3. The transmit and receive exchange ids are obtained.
 * 4. The receive exchange id is posted.
 * 5. A new els loopback event is created.
 * 6. The command and response iocbs are allocated.
 * 7. The cmd iocb FsType is set to elx loopback and the CmdRsp to looppback.
 *
 * This function is meant to be called n times while the port is in loopback
 * so it is the apps responsibility to issue a reset to take the port out
 * of loopback mode.
 **/
static int
lpfc_bsg_diag_loopback_run(struct fc_bsg_job *job)
{
	struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
	struct lpfc_hba *phba = vport->phba;
	struct diag_mode_test *diag_mode;
	struct lpfc_bsg_event *evt;
	struct event_data *evdat;
	struct lpfc_sli *psli = &phba->sli;
	uint32_t size;
	uint32_t full_size;
	size_t segment_len = 0, segment_offset = 0, current_offset = 0;
	uint16_t rpi = 0;
	struct lpfc_iocbq *cmdiocbq, *rspiocbq = NULL;
	IOCB_t *cmd, *rsp = NULL;
	struct lpfc_sli_ct_request *ctreq;
	struct lpfc_dmabuf *txbmp;
	struct ulp_bde64 *txbpl = NULL;
	struct lpfc_dmabufext *txbuffer = NULL;
	struct list_head head;
	struct lpfc_dmabuf  *curr;
	uint16_t txxri = 0, rxxri;
	uint32_t num_bde;
	uint8_t *ptr = NULL, *rx_databuf = NULL;
	int rc = 0;
	int time_left;
	int iocb_stat;
	unsigned long flags;
	void *dataout = NULL;
	uint32_t total_mem;

	/* in case no data is returned return just the return code */
	job->reply->reply_payload_rcv_len = 0;

	if (job->request_len <
	    sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_test)) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"2739 Received DIAG TEST request below minimum "
				"size\n");
		rc = -EINVAL;
		goto loopback_test_exit;
	}

	if (job->request_payload.payload_len !=
		job->reply_payload.payload_len) {
		rc = -EINVAL;
		goto loopback_test_exit;
	}
	diag_mode = (struct diag_mode_test *)
		job->request->rqst_data.h_vendor.vendor_cmd;

	if ((phba->link_state == LPFC_HBA_ERROR) ||
	    (psli->sli_flag & LPFC_BLOCK_MGMT_IO) ||
	    (!(psli->sli_flag & LPFC_SLI_ACTIVE))) {
		rc = -EACCES;
		goto loopback_test_exit;
	}

	if (!lpfc_is_link_up(phba) || !(phba->link_flag & LS_LOOPBACK_MODE)) {
		rc = -EACCES;
		goto loopback_test_exit;
	}

	size = job->request_payload.payload_len;
	full_size = size + ELX_LOOPBACK_HEADER_SZ; /* plus the header */

	if ((size == 0) || (size > 80 * BUF_SZ_4K)) {
		rc = -ERANGE;
		goto loopback_test_exit;
	}

	if (full_size >= BUF_SZ_4K) {
		/*
		 * Allocate memory for ioctl data. If buffer is bigger than 64k,
		 * then we allocate 64k and re-use that buffer over and over to
		 * xfer the whole block. This is because Linux kernel has a
		 * problem allocating more than 120k of kernel space memory. Saw
		 * problem with GET_FCPTARGETMAPPING...
		 */
		if (size <= (64 * 1024))
			total_mem = full_size;
		else
			total_mem = 64 * 1024;
	} else
		/* Allocate memory for ioctl data */
		total_mem = BUF_SZ_4K;

	dataout = kmalloc(total_mem, GFP_KERNEL);
	if (dataout == NULL) {
		rc = -ENOMEM;
		goto loopback_test_exit;
	}

	ptr = dataout;
	ptr += ELX_LOOPBACK_HEADER_SZ;
	sg_copy_to_buffer(job->request_payload.sg_list,
				job->request_payload.sg_cnt,
				ptr, size);
	rc = lpfcdiag_loop_self_reg(phba, &rpi);
	if (rc)
		goto loopback_test_exit;

	if (phba->sli_rev < LPFC_SLI_REV4) {
		rc = lpfcdiag_loop_get_xri(phba, rpi, &txxri, &rxxri);
		if (rc) {
			lpfcdiag_loop_self_unreg(phba, rpi);
			goto loopback_test_exit;
		}

		rc = lpfcdiag_loop_post_rxbufs(phba, rxxri, full_size);
		if (rc) {
			lpfcdiag_loop_self_unreg(phba, rpi);
			goto loopback_test_exit;
		}
	}
	evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid,
				SLI_CT_ELX_LOOPBACK);
	if (!evt) {
		lpfcdiag_loop_self_unreg(phba, rpi);
		rc = -ENOMEM;
		goto loopback_test_exit;
	}

	spin_lock_irqsave(&phba->ct_ev_lock, flags);
	list_add(&evt->node, &phba->ct_ev_waiters);
	lpfc_bsg_event_ref(evt);
	spin_unlock_irqrestore(&phba->ct_ev_lock, flags);

	cmdiocbq = lpfc_sli_get_iocbq(phba);
	if (phba->sli_rev < LPFC_SLI_REV4)
		rspiocbq = lpfc_sli_get_iocbq(phba);
	txbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);

	if (txbmp) {
		txbmp->virt = lpfc_mbuf_alloc(phba, 0, &txbmp->phys);
		if (txbmp->virt) {
			INIT_LIST_HEAD(&txbmp->list);
			txbpl = (struct ulp_bde64 *) txbmp->virt;
			txbuffer = diag_cmd_data_alloc(phba,
							txbpl, full_size, 0);
		}
	}

	if (!cmdiocbq || !txbmp || !txbpl || !txbuffer || !txbmp->virt) {
		rc = -ENOMEM;
		goto err_loopback_test_exit;
	}
	if ((phba->sli_rev < LPFC_SLI_REV4) && !rspiocbq) {
		rc = -ENOMEM;
		goto err_loopback_test_exit;
	}

	cmd = &cmdiocbq->iocb;
	if (phba->sli_rev < LPFC_SLI_REV4)
		rsp = &rspiocbq->iocb;

	INIT_LIST_HEAD(&head);
	list_add_tail(&head, &txbuffer->dma.list);
	list_for_each_entry(curr, &head, list) {
		segment_len = ((struct lpfc_dmabufext *)curr)->size;
		if (current_offset == 0) {
			ctreq = curr->virt;
			memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ);
			ctreq->RevisionId.bits.Revision = SLI_CT_REVISION;
			ctreq->RevisionId.bits.InId = 0;
			ctreq->FsType = SLI_CT_ELX_LOOPBACK;
			ctreq->FsSubType = 0;
			ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_DATA;
			ctreq->CommandResponse.bits.Size   = size;
			segment_offset = ELX_LOOPBACK_HEADER_SZ;
		} else
			segment_offset = 0;

		BUG_ON(segment_offset >= segment_len);
		memcpy(curr->virt + segment_offset,
			ptr + current_offset,
			segment_len - segment_offset);

		current_offset += segment_len - segment_offset;
		BUG_ON(current_offset > size);
	}
	list_del(&head);

	/* Build the XMIT_SEQUENCE iocb */
	num_bde = (uint32_t)txbuffer->flag;

	cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(txbmp->phys);
	cmd->un.xseq64.bdl.addrLow = putPaddrLow(txbmp->phys);
	cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
	cmd->un.xseq64.bdl.bdeSize = (num_bde * sizeof(struct ulp_bde64));

	cmd->un.xseq64.w5.hcsw.Fctl = (LS | LA);
	cmd->un.xseq64.w5.hcsw.Dfctl = 0;
	cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
	cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;

	cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX;
	cmd->ulpBdeCount = 1;
	cmd->ulpLe = 1;
	cmd->ulpClass = CLASS3;

	if (phba->sli_rev < LPFC_SLI_REV4) {
		cmd->ulpContext = txxri;
	} else {
		cmd->un.xseq64.bdl.ulpIoTag32 = 0;
		cmd->un.ulpWord[3] = phba->sli4_hba.rpi_ids[rpi];
		cmdiocbq->context3 = txbmp;
		cmdiocbq->sli4_xritag = NO_XRI;
		cmd->unsli3.rcvsli3.ox_id = 0xffff;
	}
	cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
	cmdiocbq->vport = phba->pport;
	iocb_stat = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq,
					     rspiocbq, (phba->fc_ratov * 2) +
					     LPFC_DRVR_TIMEOUT);

	if ((iocb_stat != IOCB_SUCCESS) || ((phba->sli_rev < LPFC_SLI_REV4) &&
					   (rsp->ulpStatus != IOCB_SUCCESS))) {
		lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
				"3126 Failed loopback test issue iocb: "
				"iocb_stat:x%x\n", iocb_stat);
		rc = -EIO;
		goto err_loopback_test_exit;
	}

	evt->waiting = 1;
	time_left = wait_event_interruptible_timeout(
		evt->wq, !list_empty(&evt->events_to_see),
		((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT) * HZ);
	evt->waiting = 0;
	if (list_empty(&evt->events_to_see)) {
		rc = (time_left) ? -EINTR : -ETIMEDOUT;
		lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
				"3125 Not receiving unsolicited event, "
				"rc:x%x\n", rc);
	} else {
		spin_lock_irqsave(&phba->ct_ev_lock, flags);
		list_move(evt->events_to_see.prev, &evt->events_to_get);
		evdat = list_entry(evt->events_to_get.prev,
				   typeof(*evdat), node);
		spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
		rx_databuf = evdat->data;
		if (evdat->len != full_size) {
			lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
				"1603 Loopback test did not receive expected "
				"data length. actual length 0x%x expected "
				"length 0x%x\n",
				evdat->len, full_size);
			rc = -EIO;
		} else if (rx_databuf == NULL)
			rc = -EIO;
		else {
			rc = IOCB_SUCCESS;
			/* skip over elx loopback header */
			rx_databuf += ELX_LOOPBACK_HEADER_SZ;
			job->reply->reply_payload_rcv_len =
				sg_copy_from_buffer(job->reply_payload.sg_list,
						    job->reply_payload.sg_cnt,
						    rx_databuf, size);
			job->reply->reply_payload_rcv_len = size;
		}
	}

err_loopback_test_exit:
	lpfcdiag_loop_self_unreg(phba, rpi);

	spin_lock_irqsave(&phba->ct_ev_lock, flags);
	lpfc_bsg_event_unref(evt); /* release ref */
	lpfc_bsg_event_unref(evt); /* delete */
	spin_unlock_irqrestore(&phba->ct_ev_lock, flags);

	if (cmdiocbq != NULL)
		lpfc_sli_release_iocbq(phba, cmdiocbq);

	if (rspiocbq != NULL)
		lpfc_sli_release_iocbq(phba, rspiocbq);

	if (txbmp != NULL) {
		if (txbpl != NULL) {
			if (txbuffer != NULL)
				diag_cmd_data_free(phba, txbuffer);
			lpfc_mbuf_free(phba, txbmp->virt, txbmp->phys);
		}
		kfree(txbmp);
	}

loopback_test_exit:
	kfree(dataout);
	/* make error code available to userspace */
	job->reply->result = rc;
	job->dd_data = NULL;
	/* complete the job back to userspace if no error */
	if (rc == IOCB_SUCCESS)
		job->job_done(job);
	return rc;
}

/**
 * lpfc_bsg_get_dfc_rev - process a GET_DFC_REV bsg vendor command
 * @job: GET_DFC_REV fc_bsg_job
 **/
static int
lpfc_bsg_get_dfc_rev(struct fc_bsg_job *job)
{
	struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
	struct lpfc_hba *phba = vport->phba;
	struct get_mgmt_rev *event_req;
	struct get_mgmt_rev_reply *event_reply;
	int rc = 0;

	if (job->request_len <
	    sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev)) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"2740 Received GET_DFC_REV request below "
				"minimum size\n");
		rc = -EINVAL;
		goto job_error;
	}

	event_req = (struct get_mgmt_rev *)
		job->request->rqst_data.h_vendor.vendor_cmd;

	event_reply = (struct get_mgmt_rev_reply *)
		job->reply->reply_data.vendor_reply.vendor_rsp;

	if (job->reply_len <
	    sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev_reply)) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"2741 Received GET_DFC_REV reply below "
				"minimum size\n");
		rc = -EINVAL;
		goto job_error;
	}

	event_reply->info.a_Major = MANAGEMENT_MAJOR_REV;
	event_reply->info.a_Minor = MANAGEMENT_MINOR_REV;
job_error:
	job->reply->result = rc;
	if (rc == 0)
		job->job_done(job);
	return rc;
}

/**
 * lpfc_bsg_issue_mbox_cmpl - lpfc_bsg_issue_mbox mbox completion handler
 * @phba: Pointer to HBA context object.
 * @pmboxq: Pointer to mailbox command.
 *
 * This is completion handler function for mailbox commands issued from
 * lpfc_bsg_issue_mbox function. This function is called by the
 * mailbox event handler function with no lock held. This function
 * will wake up thread waiting on the wait queue pointed by context1
 * of the mailbox.
 **/
void
lpfc_bsg_issue_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
{
	struct bsg_job_data *dd_data;
	struct fc_bsg_job *job;
	uint32_t size;
	unsigned long flags;
	uint8_t *pmb, *pmb_buf;

	spin_lock_irqsave(&phba->ct_ev_lock, flags);
	dd_data = pmboxq->context1;
	/* job already timed out? */
	if (!dd_data) {
		spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
		return;
	}

	/*
	 * The outgoing buffer is readily referred from the dma buffer,
	 * just need to get header part from mailboxq structure.
	 */
	pmb = (uint8_t *)&pmboxq->u.mb;
	pmb_buf = (uint8_t *)dd_data->context_un.mbox.mb;
	memcpy(pmb_buf, pmb, sizeof(MAILBOX_t));

	job = dd_data->context_un.mbox.set_job;
	if (job) {
		size = job->reply_payload.payload_len;
		job->reply->reply_payload_rcv_len =
			sg_copy_from_buffer(job->reply_payload.sg_list,
					    job->reply_payload.sg_cnt,
					    pmb_buf, size);
		/* need to hold the lock until we set job->dd_data to NULL
		 * to hold off the timeout handler returning to the mid-layer
		 * while we are still processing the job.
		 */
		job->dd_data = NULL;
		dd_data->context_un.mbox.set_job = NULL;
		spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
	} else {
		dd_data->context_un.mbox.set_job = NULL;
		spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
	}

	mempool_free(dd_data->context_un.mbox.pmboxq, phba->mbox_mem_pool);
	lpfc_bsg_dma_page_free(phba, dd_data->context_un.mbox.dmabuffers);
	kfree(dd_data);

	if (job) {
		job->reply->result = 0;
		job->job_done(job);
	}
	return;
}

/**
 * lpfc_bsg_check_cmd_access - test for a supported mailbox command
 * @phba: Pointer to HBA context object.
 * @mb: Pointer to a mailbox object.
 * @vport: Pointer to a vport object.
 *
 * Some commands require the port to be offline, some may not be called from
 * the application.
 **/
static int lpfc_bsg_check_cmd_access(struct lpfc_hba *phba,
	MAILBOX_t *mb, struct lpfc_vport *vport)
{
	/* return negative error values for bsg job */
	switch (mb->mbxCommand) {
	/* Offline only */
	case MBX_INIT_LINK:
	case MBX_DOWN_LINK:
	case MBX_CONFIG_LINK:
	case MBX_CONFIG_RING:
	case MBX_RESET_RING:
	case MBX_UNREG_LOGIN:
	case MBX_CLEAR_LA:
	case MBX_DUMP_CONTEXT:
	case MBX_RUN_DIAGS:
	case MBX_RESTART:
	case MBX_SET_MASK:
		if (!(vport->fc_flag & FC_OFFLINE_MODE)) {
			lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"2743 Command 0x%x is illegal in on-line "
				"state\n",
				mb->mbxCommand);
			return -EPERM;
		}
	case MBX_WRITE_NV:
	case MBX_WRITE_VPARMS:
	case MBX_LOAD_SM:
	case MBX_READ_NV:
	case MBX_READ_CONFIG:
	case MBX_READ_RCONFIG:
	case MBX_READ_STATUS:
	case MBX_READ_XRI:
	case MBX_READ_REV:
	case MBX_READ_LNK_STAT:
	case MBX_DUMP_MEMORY:
	case MBX_DOWN_LOAD:
	case MBX_UPDATE_CFG:
	case MBX_KILL_BOARD:
	case MBX_LOAD_AREA:
	case MBX_LOAD_EXP_ROM:
	case MBX_BEACON:
	case MBX_DEL_LD_ENTRY:
	case MBX_SET_DEBUG:
	case MBX_WRITE_WWN:
	case MBX_SLI4_CONFIG:
	case MBX_READ_EVENT_LOG:
	case MBX_READ_EVENT_LOG_STATUS:
	case MBX_WRITE_EVENT_LOG:
	case MBX_PORT_CAPABILITIES:
	case MBX_PORT_IOV_CONTROL:
	case MBX_RUN_BIU_DIAG64:
		break;
	case MBX_SET_VARIABLE:
		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
			"1226 mbox: set_variable 0x%x, 0x%x\n",
			mb->un.varWords[0],
			mb->un.varWords[1]);
		if ((mb->un.varWords[0] == SETVAR_MLOMNT)
			&& (mb->un.varWords[1] == 1)) {
			phba->wait_4_mlo_maint_flg = 1;
		} else if (mb->un.varWords[0] == SETVAR_MLORST) {
			spin_lock_irq(&phba->hbalock);
			phba->link_flag &= ~LS_LOOPBACK_MODE;
			spin_unlock_irq(&phba->hbalock);
			phba->fc_topology = LPFC_TOPOLOGY_PT_PT;
		}
		break;
	case MBX_READ_SPARM64:
	case MBX_READ_TOPOLOGY:
	case MBX_REG_LOGIN:
	case MBX_REG_LOGIN64:
	case MBX_CONFIG_PORT:
	case MBX_RUN_BIU_DIAG:
	default:
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
			"2742 Unknown Command 0x%x\n",
			mb->mbxCommand);
		return -EPERM;
	}

	return 0; /* ok */
}

/**
 * lpfc_bsg_mbox_ext_cleanup - clean up context of multi-buffer mbox session
 * @phba: Pointer to HBA context object.
 *
 * This is routine clean up and reset BSG handling of multi-buffer mbox
 * command session.
 **/
static void
lpfc_bsg_mbox_ext_session_reset(struct lpfc_hba *phba)
{
	if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_IDLE)
		return;

	/* free all memory, including dma buffers */
	lpfc_bsg_dma_page_list_free(phba,
				    &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
	lpfc_bsg_dma_page_free(phba, phba->mbox_ext_buf_ctx.mbx_dmabuf);
	/* multi-buffer write mailbox command pass-through complete */
	memset((char *)&phba->mbox_ext_buf_ctx, 0,
	       sizeof(struct lpfc_mbox_ext_buf_ctx));
	INIT_LIST_HEAD(&phba->mbox_ext_buf_ctx.ext_dmabuf_list);

	return;
}

/**
 * lpfc_bsg_issue_mbox_ext_handle_job - job handler for multi-buffer mbox cmpl
 * @phba: Pointer to HBA context object.
 * @pmboxq: Pointer to mailbox command.
 *
 * This is routine handles BSG job for mailbox commands completions with
 * multiple external buffers.
 **/
static struct fc_bsg_job *
lpfc_bsg_issue_mbox_ext_handle_job(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
{
	struct bsg_job_data *dd_data;
	struct fc_bsg_job *job;
	uint8_t *pmb, *pmb_buf;
	unsigned long flags;
	uint32_t size;
	int rc = 0;
	struct lpfc_dmabuf *dmabuf;
	struct lpfc_sli_config_mbox *sli_cfg_mbx;
	uint8_t *pmbx;

	spin_lock_irqsave(&phba->ct_ev_lock, flags);
	dd_data = pmboxq->context1;
	/* has the job already timed out? */
	if (!dd_data) {
		spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
		job = NULL;
		goto job_done_out;
	}

	/*
	 * The outgoing buffer is readily referred from the dma buffer,
	 * just need to get header part from mailboxq structure.
	 */
	pmb = (uint8_t *)&pmboxq->u.mb;
	pmb_buf = (uint8_t *)dd_data->context_un.mbox.mb;
	/* Copy the byte swapped response mailbox back to the user */
	memcpy(pmb_buf, pmb, sizeof(MAILBOX_t));
	/* if there is any non-embedded extended data copy that too */
	dmabuf = phba->mbox_ext_buf_ctx.mbx_dmabuf;
	sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;
	if (!bsg_bf_get(lpfc_mbox_hdr_emb,
	    &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr)) {
		pmbx = (uint8_t *)dmabuf->virt;
		/* byte swap the extended data following the mailbox command */
		lpfc_sli_pcimem_bcopy(&pmbx[sizeof(MAILBOX_t)],
			&pmbx[sizeof(MAILBOX_t)],
			sli_cfg_mbx->un.sli_config_emb0_subsys.mse[0].buf_len);
	}

	job = dd_data->context_un.mbox.set_job;
	if (job) {
		size = job->reply_payload.payload_len;
		job->reply->reply_payload_rcv_len =
			sg_copy_from_buffer(job->reply_payload.sg_list,
					    job->reply_payload.sg_cnt,
					    pmb_buf, size);
		/* result for successful */
		job->reply->result = 0;
		job->dd_data = NULL;
		/* need to hold the lock util we set job->dd_data to NULL
		 * to hold off the timeout handler from midlayer to take
		 * any action.
		 */
		spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
		lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
				"2937 SLI_CONFIG ext-buffer maibox command "
				"(x%x/x%x) complete bsg job done, bsize:%d\n",
				phba->mbox_ext_buf_ctx.nembType,
				phba->mbox_ext_buf_ctx.mboxType, size);
		lpfc_idiag_mbxacc_dump_bsg_mbox(phba,
					phba->mbox_ext_buf_ctx.nembType,
					phba->mbox_ext_buf_ctx.mboxType,
					dma_ebuf, sta_pos_addr,
					phba->mbox_ext_buf_ctx.mbx_dmabuf, 0);
	} else
		spin_unlock_irqrestore(&phba->ct_ev_lock, flags);

job_done_out:
	if (!job)
		lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
				"2938 SLI_CONFIG ext-buffer maibox "
				"command (x%x/x%x) failure, rc:x%x\n",
				phba->mbox_ext_buf_ctx.nembType,
				phba->mbox_ext_buf_ctx.mboxType, rc);
	/* state change */
	phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_DONE;
	kfree(dd_data);

	return job;
}

/**
 * lpfc_bsg_issue_read_mbox_ext_cmpl - compl handler for multi-buffer read mbox
 * @phba: Pointer to HBA context object.
 * @pmboxq: Pointer to mailbox command.
 *
 * This is completion handler function for mailbox read commands with multiple
 * external buffers.
 **/
static void
lpfc_bsg_issue_read_mbox_ext_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
{
	struct fc_bsg_job *job;

	/* handle the BSG job with mailbox command */
	if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_ABTS)
		pmboxq->u.mb.mbxStatus = MBXERR_ERROR;

	lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
			"2939 SLI_CONFIG ext-buffer rd maibox command "
			"complete, ctxState:x%x, mbxStatus:x%x\n",
			phba->mbox_ext_buf_ctx.state, pmboxq->u.mb.mbxStatus);

	job = lpfc_bsg_issue_mbox_ext_handle_job(phba, pmboxq);

	if (pmboxq->u.mb.mbxStatus || phba->mbox_ext_buf_ctx.numBuf == 1)
		lpfc_bsg_mbox_ext_session_reset(phba);

	/* free base driver mailbox structure memory */
	mempool_free(pmboxq, phba->mbox_mem_pool);

	/* complete the bsg job if we have it */
	if (job)
		job->job_done(job);

	return;
}

/**
 * lpfc_bsg_issue_write_mbox_ext_cmpl - cmpl handler for multi-buffer write mbox
 * @phba: Pointer to HBA context object.
 * @pmboxq: Pointer to mailbox command.
 *
 * This is completion handler function for mailbox write commands with multiple
 * external buffers.
 **/
static void
lpfc_bsg_issue_write_mbox_ext_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
{
	struct fc_bsg_job *job;

	/* handle the BSG job with the mailbox command */
	if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_ABTS)
		pmboxq->u.mb.mbxStatus = MBXERR_ERROR;

	lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
			"2940 SLI_CONFIG ext-buffer wr maibox command "
			"complete, ctxState:x%x, mbxStatus:x%x\n",
			phba->mbox_ext_buf_ctx.state, pmboxq->u.mb.mbxStatus);

	job = lpfc_bsg_issue_mbox_ext_handle_job(phba, pmboxq);

	/* free all memory, including dma buffers */
	mempool_free(pmboxq, phba->mbox_mem_pool);
	lpfc_bsg_mbox_ext_session_reset(phba);

	/* complete the bsg job if we have it */
	if (job)
		job->job_done(job);

	return;
}

static void
lpfc_bsg_sli_cfg_dma_desc_setup(struct lpfc_hba *phba, enum nemb_type nemb_tp,
				uint32_t index, struct lpfc_dmabuf *mbx_dmabuf,
				struct lpfc_dmabuf *ext_dmabuf)
{
	struct lpfc_sli_config_mbox *sli_cfg_mbx;

	/* pointer to the start of mailbox command */
	sli_cfg_mbx = (struct lpfc_sli_config_mbox *)mbx_dmabuf->virt;

	if (nemb_tp == nemb_mse) {
		if (index == 0) {
			sli_cfg_mbx->un.sli_config_emb0_subsys.
				mse[index].pa_hi =
				putPaddrHigh(mbx_dmabuf->phys +
					     sizeof(MAILBOX_t));
			sli_cfg_mbx->un.sli_config_emb0_subsys.
				mse[index].pa_lo =
				putPaddrLow(mbx_dmabuf->phys +
					    sizeof(MAILBOX_t));
			lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
					"2943 SLI_CONFIG(mse)[%d], "
					"bufLen:%d, addrHi:x%x, addrLo:x%x\n",
					index,
					sli_cfg_mbx->un.sli_config_emb0_subsys.
					mse[index].buf_len,
					sli_cfg_mbx->un.sli_config_emb0_subsys.
					mse[index].pa_hi,
					sli_cfg_mbx->un.sli_config_emb0_subsys.
					mse[index].pa_lo);
		} else {
			sli_cfg_mbx->un.sli_config_emb0_subsys.
				mse[index].pa_hi =
				putPaddrHigh(ext_dmabuf->phys);
			sli_cfg_mbx->un.sli_config_emb0_subsys.
				mse[index].pa_lo =
				putPaddrLow(ext_dmabuf->phys);
			lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
					"2944 SLI_CONFIG(mse)[%d], "
					"bufLen:%d, addrHi:x%x, addrLo:x%x\n",
					index,
					sli_cfg_mbx->un.sli_config_emb0_subsys.
					mse[index].buf_len,
					sli_cfg_mbx->un.sli_config_emb0_subsys.
					mse[index].pa_hi,
					sli_cfg_mbx->un.sli_config_emb0_subsys.
					mse[index].pa_lo);
		}
	} else {
		if (index == 0) {
			sli_cfg_mbx->un.sli_config_emb1_subsys.
				hbd[index].pa_hi =
				putPaddrHigh(mbx_dmabuf->phys +
					     sizeof(MAILBOX_t));
			sli_cfg_mbx->un.sli_config_emb1_subsys.
				hbd[index].pa_lo =
				putPaddrLow(mbx_dmabuf->phys +
					    sizeof(MAILBOX_t));
			lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
					"3007 SLI_CONFIG(hbd)[%d], "
					"bufLen:%d, addrHi:x%x, addrLo:x%x\n",
				index,
				bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
				&sli_cfg_mbx->un.
				sli_config_emb1_subsys.hbd[index]),
				sli_cfg_mbx->un.sli_config_emb1_subsys.
				hbd[index].pa_hi,
				sli_cfg_mbx->un.sli_config_emb1_subsys.
				hbd[index].pa_lo);

		} else {
			sli_cfg_mbx->un.sli_config_emb1_subsys.
				hbd[index].pa_hi =
				putPaddrHigh(ext_dmabuf->phys);
			sli_cfg_mbx->un.sli_config_emb1_subsys.
				hbd[index].pa_lo =
				putPaddrLow(ext_dmabuf->phys);
			lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
					"3008 SLI_CONFIG(hbd)[%d], "
					"bufLen:%d, addrHi:x%x, addrLo:x%x\n",
				index,
				bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
				&sli_cfg_mbx->un.
				sli_config_emb1_subsys.hbd[index]),
				sli_cfg_mbx->un.sli_config_emb1_subsys.
				hbd[index].pa_hi,
				sli_cfg_mbx->un.sli_config_emb1_subsys.
				hbd[index].pa_lo);
		}
	}
	return;
}

/**
 * lpfc_bsg_sli_cfg_mse_read_cmd_ext - sli_config non-embedded mailbox cmd read
 * @phba: Pointer to HBA context object.
 * @mb: Pointer to a BSG mailbox object.
 * @nemb_tp: Enumerate of non-embedded mailbox command type.
 * @dmabuff: Pointer to a DMA buffer descriptor.
 *
 * This routine performs SLI_CONFIG (0x9B) read mailbox command operation with
 * non-embedded external bufffers.
 **/
static int
lpfc_bsg_sli_cfg_read_cmd_ext(struct lpfc_hba *phba, struct fc_bsg_job *job,
			      enum nemb_type nemb_tp,
			      struct lpfc_dmabuf *dmabuf)
{
	struct lpfc_sli_config_mbox *sli_cfg_mbx;
	struct dfc_mbox_req *mbox_req;
	struct lpfc_dmabuf *curr_dmabuf, *next_dmabuf;
	uint32_t ext_buf_cnt, ext_buf_index;
	struct lpfc_dmabuf *ext_dmabuf = NULL;
	struct bsg_job_data *dd_data = NULL;
	LPFC_MBOXQ_t *pmboxq = NULL;
	MAILBOX_t *pmb;
	uint8_t *pmbx;
	int rc, i;

	mbox_req =
	   (struct dfc_mbox_req *)job->request->rqst_data.h_vendor.vendor_cmd;

	/* pointer to the start of mailbox command */
	sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;

	if (nemb_tp == nemb_mse) {
		ext_buf_cnt = bsg_bf_get(lpfc_mbox_hdr_mse_cnt,
			&sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr);
		if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_MSE) {
			lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
					"2945 Handled SLI_CONFIG(mse) rd, "
					"ext_buf_cnt(%d) out of range(%d)\n",
					ext_buf_cnt,
					LPFC_MBX_SLI_CONFIG_MAX_MSE);
			rc = -ERANGE;
			goto job_error;
		}
		lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
				"2941 Handled SLI_CONFIG(mse) rd, "
				"ext_buf_cnt:%d\n", ext_buf_cnt);
	} else {
		/* sanity check on interface type for support */
		if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
		    LPFC_SLI_INTF_IF_TYPE_2) {
			rc = -ENODEV;
			goto job_error;
		}
		/* nemb_tp == nemb_hbd */
		ext_buf_cnt = sli_cfg_mbx->un.sli_config_emb1_subsys.hbd_count;
		if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_HBD) {
			lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
					"2946 Handled SLI_CONFIG(hbd) rd, "
					"ext_buf_cnt(%d) out of range(%d)\n",
					ext_buf_cnt,
					LPFC_MBX_SLI_CONFIG_MAX_HBD);
			rc = -ERANGE;
			goto job_error;
		}
		lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
				"2942 Handled SLI_CONFIG(hbd) rd, "
				"ext_buf_cnt:%d\n", ext_buf_cnt);
	}

	/* before dma descriptor setup */
	lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_rd, dma_mbox,
					sta_pre_addr, dmabuf, ext_buf_cnt);

	/* reject non-embedded mailbox command with none external buffer */
	if (ext_buf_cnt == 0) {
		rc = -EPERM;
		goto job_error;
	} else if (ext_buf_cnt > 1) {
		/* additional external read buffers */
		for (i = 1; i < ext_buf_cnt; i++) {
			ext_dmabuf = lpfc_bsg_dma_page_alloc(phba);
			if (!ext_dmabuf) {
				rc = -ENOMEM;
				goto job_error;
			}
			list_add_tail(&ext_dmabuf->list,
				      &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
		}
	}

	/* bsg tracking structure */
	dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
	if (!dd_data) {
		rc = -ENOMEM;
		goto job_error;
	}

	/* mailbox command structure for base driver */
	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (!pmboxq) {
		rc = -ENOMEM;
		goto job_error;
	}
	memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));

	/* for the first external buffer */
	lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, 0, dmabuf, dmabuf);

	/* for the rest of external buffer descriptors if any */
	if (ext_buf_cnt > 1) {
		ext_buf_index = 1;
		list_for_each_entry_safe(curr_dmabuf, next_dmabuf,
				&phba->mbox_ext_buf_ctx.ext_dmabuf_list, list) {
			lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp,
						ext_buf_index, dmabuf,
						curr_dmabuf);
			ext_buf_index++;
		}
	}

	/* after dma descriptor setup */
	lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_rd, dma_mbox,
					sta_pos_addr, dmabuf, ext_buf_cnt);

	/* construct base driver mbox command */
	pmb = &pmboxq->u.mb;
	pmbx = (uint8_t *)dmabuf->virt;
	memcpy(pmb, pmbx, sizeof(*pmb));
	pmb->mbxOwner = OWN_HOST;
	pmboxq->vport = phba->pport;

	/* multi-buffer handling context */
	phba->mbox_ext_buf_ctx.nembType = nemb_tp;
	phba->mbox_ext_buf_ctx.mboxType = mbox_rd;
	phba->mbox_ext_buf_ctx.numBuf = ext_buf_cnt;
	phba->mbox_ext_buf_ctx.mbxTag = mbox_req->extMboxTag;
	phba->mbox_ext_buf_ctx.seqNum = mbox_req->extSeqNum;
	phba->mbox_ext_buf_ctx.mbx_dmabuf = dmabuf;

	/* callback for multi-buffer read mailbox command */
	pmboxq->mbox_cmpl = lpfc_bsg_issue_read_mbox_ext_cmpl;

	/* context fields to callback function */
	pmboxq->context1 = dd_data;
	dd_data->type = TYPE_MBOX;
	dd_data->context_un.mbox.pmboxq = pmboxq;
	dd_data->context_un.mbox.mb = (MAILBOX_t *)pmbx;
	dd_data->context_un.mbox.set_job = job;
	job->dd_data = dd_data;

	/* state change */
	phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_PORT;

	/*
	 * Non-embedded mailbox subcommand data gets byte swapped here because
	 * the lower level driver code only does the first 64 mailbox words.
	 */
	if ((!bsg_bf_get(lpfc_mbox_hdr_emb,
	    &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr)) &&
		(nemb_tp == nemb_mse))
		lpfc_sli_pcimem_bcopy(&pmbx[sizeof(MAILBOX_t)],
			&pmbx[sizeof(MAILBOX_t)],
				sli_cfg_mbx->un.sli_config_emb0_subsys.
					mse[0].buf_len);

	rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
	if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) {
		lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
				"2947 Issued SLI_CONFIG ext-buffer "
				"maibox command, rc:x%x\n", rc);
		return SLI_CONFIG_HANDLED;
	}
	lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
			"2948 Failed to issue SLI_CONFIG ext-buffer "
			"maibox command, rc:x%x\n", rc);
	rc = -EPIPE;

job_error:
	if (pmboxq)
		mempool_free(pmboxq, phba->mbox_mem_pool);
	lpfc_bsg_dma_page_list_free(phba,
				    &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
	kfree(dd_data);
	phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_IDLE;
	return rc;
}

/**
 * lpfc_bsg_sli_cfg_write_cmd_ext - sli_config non-embedded mailbox cmd write
 * @phba: Pointer to HBA context object.
 * @mb: Pointer to a BSG mailbox object.
 * @dmabuff: Pointer to a DMA buffer descriptor.
 *
 * This routine performs SLI_CONFIG (0x9B) write mailbox command operation with
 * non-embedded external bufffers.
 **/
static int
lpfc_bsg_sli_cfg_write_cmd_ext(struct lpfc_hba *phba, struct fc_bsg_job *job,
			       enum nemb_type nemb_tp,
			       struct lpfc_dmabuf *dmabuf)
{
	struct dfc_mbox_req *mbox_req;
	struct lpfc_sli_config_mbox *sli_cfg_mbx;
	uint32_t ext_buf_cnt;
	struct bsg_job_data *dd_data = NULL;
	LPFC_MBOXQ_t *pmboxq = NULL;
	MAILBOX_t *pmb;
	uint8_t *mbx;
	int rc = SLI_CONFIG_NOT_HANDLED, i;

	mbox_req =
	   (struct dfc_mbox_req *)job->request->rqst_data.h_vendor.vendor_cmd;

	/* pointer to the start of mailbox command */
	sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;

	if (nemb_tp == nemb_mse) {
		ext_buf_cnt = bsg_bf_get(lpfc_mbox_hdr_mse_cnt,
			&sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr);
		if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_MSE) {
			lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
					"2953 Failed SLI_CONFIG(mse) wr, "
					"ext_buf_cnt(%d) out of range(%d)\n",
					ext_buf_cnt,
					LPFC_MBX_SLI_CONFIG_MAX_MSE);
			return -ERANGE;
		}
		lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
				"2949 Handled SLI_CONFIG(mse) wr, "
				"ext_buf_cnt:%d\n", ext_buf_cnt);
	} else {
		/* sanity check on interface type for support */
		if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
		    LPFC_SLI_INTF_IF_TYPE_2)
			return -ENODEV;
		/* nemb_tp == nemb_hbd */
		ext_buf_cnt = sli_cfg_mbx->un.sli_config_emb1_subsys.hbd_count;
		if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_HBD) {
			lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
					"2954 Failed SLI_CONFIG(hbd) wr, "
					"ext_buf_cnt(%d) out of range(%d)\n",
					ext_buf_cnt,
					LPFC_MBX_SLI_CONFIG_MAX_HBD);
			return -ERANGE;
		}
		lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
				"2950 Handled SLI_CONFIG(hbd) wr, "
				"ext_buf_cnt:%d\n", ext_buf_cnt);
	}

	/* before dma buffer descriptor setup */
	lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_wr, dma_mbox,
					sta_pre_addr, dmabuf, ext_buf_cnt);

	if (ext_buf_cnt == 0)
		return -EPERM;

	/* for the first external buffer */
	lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, 0, dmabuf, dmabuf);

	/* after dma descriptor setup */
	lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_wr, dma_mbox,
					sta_pos_addr, dmabuf, ext_buf_cnt);

	/* log for looking forward */
	for (i = 1; i < ext_buf_cnt; i++) {
		if (nemb_tp == nemb_mse)
			lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
				"2951 SLI_CONFIG(mse), buf[%d]-length:%d\n",
				i, sli_cfg_mbx->un.sli_config_emb0_subsys.
				mse[i].buf_len);
		else
			lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
				"2952 SLI_CONFIG(hbd), buf[%d]-length:%d\n",
				i, bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
				&sli_cfg_mbx->un.sli_config_emb1_subsys.
				hbd[i]));
	}

	/* multi-buffer handling context */
	phba->mbox_ext_buf_ctx.nembType = nemb_tp;
	phba->mbox_ext_buf_ctx.mboxType = mbox_wr;
	phba->mbox_ext_buf_ctx.numBuf = ext_buf_cnt;
	phba->mbox_ext_buf_ctx.mbxTag = mbox_req->extMboxTag;
	phba->mbox_ext_buf_ctx.seqNum = mbox_req->extSeqNum;
	phba->mbox_ext_buf_ctx.mbx_dmabuf = dmabuf;

	if (ext_buf_cnt == 1) {
		/* bsg tracking structure */
		dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
		if (!dd_data) {
			rc = -ENOMEM;
			goto job_error;
		}

		/* mailbox command structure for base driver */
		pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
		if (!pmboxq) {
			rc = -ENOMEM;
			goto job_error;
		}
		memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
		pmb = &pmboxq->u.mb;
		mbx = (uint8_t *)dmabuf->virt;
		memcpy(pmb, mbx, sizeof(*pmb));
		pmb->mbxOwner = OWN_HOST;
		pmboxq->vport = phba->pport;

		/* callback for multi-buffer read mailbox command */
		pmboxq->mbox_cmpl = lpfc_bsg_issue_write_mbox_ext_cmpl;

		/* context fields to callback function */
		pmboxq->context1 = dd_data;
		dd_data->type = TYPE_MBOX;
		dd_data->context_un.mbox.pmboxq = pmboxq;
		dd_data->context_un.mbox.mb = (MAILBOX_t *)mbx;
		dd_data->context_un.mbox.set_job = job;
		job->dd_data = dd_data;

		/* state change */
		phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_PORT;

		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
		if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) {
			lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
					"2955 Issued SLI_CONFIG ext-buffer "
					"maibox command, rc:x%x\n", rc);
			return SLI_CONFIG_HANDLED;
		}
		lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
				"2956 Failed to issue SLI_CONFIG ext-buffer "
				"maibox command, rc:x%x\n", rc);
		rc = -EPIPE;
		goto job_error;
	}

	/* wait for additoinal external buffers */
	job->reply->result = 0;
	job->job_done(job);
	return SLI_CONFIG_HANDLED;

job_error:
	if (pmboxq)
		mempool_free(pmboxq, phba->mbox_mem_pool);
	kfree(dd_data);

	return rc;
}

/**
 * lpfc_bsg_handle_sli_cfg_mbox - handle sli-cfg mailbox cmd with ext buffer
 * @phba: Pointer to HBA context object.
 * @mb: Pointer to a BSG mailbox object.
 * @dmabuff: Pointer to a DMA buffer descriptor.
 *
 * This routine handles SLI_CONFIG (0x9B) mailbox command with non-embedded
 * external bufffers, including both 0x9B with non-embedded MSEs and 0x9B
 * with embedded sussystem 0x1 and opcodes with external HBDs.
 **/
static int
lpfc_bsg_handle_sli_cfg_mbox(struct lpfc_hba *phba, struct fc_bsg_job *job,
			     struct lpfc_dmabuf *dmabuf)
{
	struct lpfc_sli_config_mbox *sli_cfg_mbx;
	uint32_t subsys;
	uint32_t opcode;
	int rc = SLI_CONFIG_NOT_HANDLED;

	/* state change on new multi-buffer pass-through mailbox command */
	phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_HOST;

	sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;

	if (!bsg_bf_get(lpfc_mbox_hdr_emb,
	    &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr)) {
		subsys = bsg_bf_get(lpfc_emb0_subcmnd_subsys,
				    &sli_cfg_mbx->un.sli_config_emb0_subsys);
		opcode = bsg_bf_get(lpfc_emb0_subcmnd_opcode,
				    &sli_cfg_mbx->un.sli_config_emb0_subsys);
		if (subsys == SLI_CONFIG_SUBSYS_FCOE) {
			switch (opcode) {
			case FCOE_OPCODE_READ_FCF:
				lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
						"2957 Handled SLI_CONFIG "
						"subsys_fcoe, opcode:x%x\n",
						opcode);
				rc = lpfc_bsg_sli_cfg_read_cmd_ext(phba, job,
							nemb_mse, dmabuf);
				break;
			case FCOE_OPCODE_ADD_FCF:
				lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
						"2958 Handled SLI_CONFIG "
						"subsys_fcoe, opcode:x%x\n",
						opcode);
				rc = lpfc_bsg_sli_cfg_write_cmd_ext(phba, job,
							nemb_mse, dmabuf);
				break;
			default:
				lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
						"2959 Reject SLI_CONFIG "
						"subsys_fcoe, opcode:x%x\n",
						opcode);
				rc = -EPERM;
				break;
			}
		} else if (subsys == SLI_CONFIG_SUBSYS_COMN) {
			switch (opcode) {
			case COMN_OPCODE_GET_CNTL_ADDL_ATTRIBUTES:
				lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
						"3106 Handled SLI_CONFIG "
						"subsys_fcoe, opcode:x%x\n",
						opcode);
				rc = lpfc_bsg_sli_cfg_read_cmd_ext(phba, job,
							nemb_mse, dmabuf);
				break;
			default:
				lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
						"3107 Reject SLI_CONFIG "
						"subsys_fcoe, opcode:x%x\n",
						opcode);
				rc = -EPERM;
				break;
			}
		} else {
			lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
					"2977 Reject SLI_CONFIG "
					"subsys:x%d, opcode:x%x\n",
					subsys, opcode);
			rc = -EPERM;
		}
	} else {
		subsys = bsg_bf_get(lpfc_emb1_subcmnd_subsys,
				    &sli_cfg_mbx->un.sli_config_emb1_subsys);
		opcode = bsg_bf_get(lpfc_emb1_subcmnd_opcode,
				    &sli_cfg_mbx->un.sli_config_emb1_subsys);
		if (subsys == SLI_CONFIG_SUBSYS_COMN) {
			switch (opcode) {
			case COMN_OPCODE_READ_OBJECT:
			case COMN_OPCODE_READ_OBJECT_LIST:
				lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
						"2960 Handled SLI_CONFIG "
						"subsys_comn, opcode:x%x\n",
						opcode);
				rc = lpfc_bsg_sli_cfg_read_cmd_ext(phba, job,
							nemb_hbd, dmabuf);
				break;
			case COMN_OPCODE_WRITE_OBJECT:
				lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
						"2961 Handled SLI_CONFIG "
						"subsys_comn, opcode:x%x\n",
						opcode);
				rc = lpfc_bsg_sli_cfg_write_cmd_ext(phba, job,
							nemb_hbd, dmabuf);
				break;
			default:
				lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
						"2962 Not handled SLI_CONFIG "
						"subsys_comn, opcode:x%x\n",
						opcode);
				rc = SLI_CONFIG_NOT_HANDLED;
				break;
			}
		} else {
			lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
					"2978 Not handled SLI_CONFIG "
					"subsys:x%d, opcode:x%x\n",
					subsys, opcode);
			rc = SLI_CONFIG_NOT_HANDLED;
		}
	}

	/* state reset on not handled new multi-buffer mailbox command */
	if (rc != SLI_CONFIG_HANDLED)
		phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_IDLE;

	return rc;
}

/**
 * lpfc_bsg_mbox_ext_abort_req - request to abort mbox command with ext buffers
 * @phba: Pointer to HBA context object.
 *
 * This routine is for requesting to abort a pass-through mailbox command with
 * multiple external buffers due to error condition.
 **/
static void
lpfc_bsg_mbox_ext_abort(struct lpfc_hba *phba)
{
	if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_PORT)
		phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_ABTS;
	else
		lpfc_bsg_mbox_ext_session_reset(phba);
	return;
}

/**
 * lpfc_bsg_read_ebuf_get - get the next mailbox read external buffer
 * @phba: Pointer to HBA context object.
 * @dmabuf: Pointer to a DMA buffer descriptor.
 *
 * This routine extracts the next mailbox read external buffer back to
 * user space through BSG.
 **/
static int
lpfc_bsg_read_ebuf_get(struct lpfc_hba *phba, struct fc_bsg_job *job)
{
	struct lpfc_sli_config_mbox *sli_cfg_mbx;
	struct lpfc_dmabuf *dmabuf;
	uint8_t *pbuf;
	uint32_t size;
	uint32_t index;

	index = phba->mbox_ext_buf_ctx.seqNum;
	phba->mbox_ext_buf_ctx.seqNum++;

	sli_cfg_mbx = (struct lpfc_sli_config_mbox *)
			phba->mbox_ext_buf_ctx.mbx_dmabuf->virt;

	if (phba->mbox_ext_buf_ctx.nembType == nemb_mse) {
		size = bsg_bf_get(lpfc_mbox_sli_config_mse_len,
			&sli_cfg_mbx->un.sli_config_emb0_subsys.mse[index]);
		lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
				"2963 SLI_CONFIG (mse) ext-buffer rd get "
				"buffer[%d], size:%d\n", index, size);
	} else {
		size = bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
			&sli_cfg_mbx->un.sli_config_emb1_subsys.hbd[index]);
		lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
				"2964 SLI_CONFIG (hbd) ext-buffer rd get "
				"buffer[%d], size:%d\n", index, size);
	}
	if (list_empty(&phba->mbox_ext_buf_ctx.ext_dmabuf_list))
		return -EPIPE;
	dmabuf = list_first_entry(&phba->mbox_ext_buf_ctx.ext_dmabuf_list,
				  struct lpfc_dmabuf, list);
	list_del_init(&dmabuf->list);

	/* after dma buffer descriptor setup */
	lpfc_idiag_mbxacc_dump_bsg_mbox(phba, phba->mbox_ext_buf_ctx.nembType,
					mbox_rd, dma_ebuf, sta_pos_addr,
					dmabuf, index);

	pbuf = (uint8_t *)dmabuf->virt;
	job->reply->reply_payload_rcv_len =
		sg_copy_from_buffer(job->reply_payload.sg_list,
				    job->reply_payload.sg_cnt,
				    pbuf, size);

	lpfc_bsg_dma_page_free(phba, dmabuf);

	if (phba->mbox_ext_buf_ctx.seqNum == phba->mbox_ext_buf_ctx.numBuf) {
		lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
				"2965 SLI_CONFIG (hbd) ext-buffer rd mbox "
				"command session done\n");
		lpfc_bsg_mbox_ext_session_reset(phba);
	}

	job->reply->result = 0;
	job->job_done(job);

	return SLI_CONFIG_HANDLED;
}

/**
 * lpfc_bsg_write_ebuf_set - set the next mailbox write external buffer
 * @phba: Pointer to HBA context object.
 * @dmabuf: Pointer to a DMA buffer descriptor.
 *
 * This routine sets up the next mailbox read external buffer obtained
 * from user space through BSG.
 **/
static int
lpfc_bsg_write_ebuf_set(struct lpfc_hba *phba, struct fc_bsg_job *job,
			struct lpfc_dmabuf *dmabuf)
{
	struct lpfc_sli_config_mbox *sli_cfg_mbx;
	struct bsg_job_data *dd_data = NULL;
	LPFC_MBOXQ_t *pmboxq = NULL;
	MAILBOX_t *pmb;
	enum nemb_type nemb_tp;
	uint8_t *pbuf;
	uint32_t size;
	uint32_t index;
	int rc;

	index = phba->mbox_ext_buf_ctx.seqNum;
	phba->mbox_ext_buf_ctx.seqNum++;
	nemb_tp = phba->mbox_ext_buf_ctx.nembType;

	sli_cfg_mbx = (struct lpfc_sli_config_mbox *)
			phba->mbox_ext_buf_ctx.mbx_dmabuf->virt;

	dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
	if (!dd_data) {
		rc = -ENOMEM;
		goto job_error;
	}

	pbuf = (uint8_t *)dmabuf->virt;
	size = job->request_payload.payload_len;
	sg_copy_to_buffer(job->request_payload.sg_list,
			  job->request_payload.sg_cnt,
			  pbuf, size);

	if (phba->mbox_ext_buf_ctx.nembType == nemb_mse) {
		lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
				"2966 SLI_CONFIG (mse) ext-buffer wr set "
				"buffer[%d], size:%d\n",
				phba->mbox_ext_buf_ctx.seqNum, size);

	} else {
		lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
				"2967 SLI_CONFIG (hbd) ext-buffer wr set "
				"buffer[%d], size:%d\n",
				phba->mbox_ext_buf_ctx.seqNum, size);

	}

	/* set up external buffer descriptor and add to external buffer list */
	lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, index,
					phba->mbox_ext_buf_ctx.mbx_dmabuf,
					dmabuf);
	list_add_tail(&dmabuf->list, &phba->mbox_ext_buf_ctx.ext_dmabuf_list);

	/* after write dma buffer */
	lpfc_idiag_mbxacc_dump_bsg_mbox(phba, phba->mbox_ext_buf_ctx.nembType,
					mbox_wr, dma_ebuf, sta_pos_addr,
					dmabuf, index);

	if (phba->mbox_ext_buf_ctx.seqNum == phba->mbox_ext_buf_ctx.numBuf) {
		lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
				"2968 SLI_CONFIG ext-buffer wr all %d "
				"ebuffers received\n",
				phba->mbox_ext_buf_ctx.numBuf);
		/* mailbox command structure for base driver */
		pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
		if (!pmboxq) {
			rc = -ENOMEM;
			goto job_error;
		}
		memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
		pbuf = (uint8_t *)phba->mbox_ext_buf_ctx.mbx_dmabuf->virt;
		pmb = &pmboxq->u.mb;
		memcpy(pmb, pbuf, sizeof(*pmb));
		pmb->mbxOwner = OWN_HOST;
		pmboxq->vport = phba->pport;

		/* callback for multi-buffer write mailbox command */
		pmboxq->mbox_cmpl = lpfc_bsg_issue_write_mbox_ext_cmpl;

		/* context fields to callback function */
		pmboxq->context1 = dd_data;
		dd_data->type = TYPE_MBOX;
		dd_data->context_un.mbox.pmboxq = pmboxq;
		dd_data->context_un.mbox.mb = (MAILBOX_t *)pbuf;
		dd_data->context_un.mbox.set_job = job;
		job->dd_data = dd_data;

		/* state change */
		phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_PORT;

		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
		if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) {
			lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
					"2969 Issued SLI_CONFIG ext-buffer "
					"maibox command, rc:x%x\n", rc);
			return SLI_CONFIG_HANDLED;
		}
		lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
				"2970 Failed to issue SLI_CONFIG ext-buffer "
				"maibox command, rc:x%x\n", rc);
		rc = -EPIPE;
		goto job_error;
	}

	/* wait for additoinal external buffers */
	job->reply->result = 0;
	job->job_done(job);
	return SLI_CONFIG_HANDLED;

job_error:
	lpfc_bsg_dma_page_free(phba, dmabuf);
	kfree(dd_data);

	return rc;
}

/**
 * lpfc_bsg_handle_sli_cfg_ebuf - handle ext buffer with sli-cfg mailbox cmd
 * @phba: Pointer to HBA context object.
 * @mb: Pointer to a BSG mailbox object.
 * @dmabuff: Pointer to a DMA buffer descriptor.
 *
 * This routine handles the external buffer with SLI_CONFIG (0x9B) mailbox
 * command with multiple non-embedded external buffers.
 **/
static int
lpfc_bsg_handle_sli_cfg_ebuf(struct lpfc_hba *phba, struct fc_bsg_job *job,
			     struct lpfc_dmabuf *dmabuf)
{
	int rc;

	lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
			"2971 SLI_CONFIG buffer (type:x%x)\n",
			phba->mbox_ext_buf_ctx.mboxType);

	if (phba->mbox_ext_buf_ctx.mboxType == mbox_rd) {
		if (phba->mbox_ext_buf_ctx.state != LPFC_BSG_MBOX_DONE) {
			lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
					"2972 SLI_CONFIG rd buffer state "
					"mismatch:x%x\n",
					phba->mbox_ext_buf_ctx.state);
			lpfc_bsg_mbox_ext_abort(phba);
			return -EPIPE;
		}
		rc = lpfc_bsg_read_ebuf_get(phba, job);
		if (rc == SLI_CONFIG_HANDLED)
			lpfc_bsg_dma_page_free(phba, dmabuf);
	} else { /* phba->mbox_ext_buf_ctx.mboxType == mbox_wr */
		if (phba->mbox_ext_buf_ctx.state != LPFC_BSG_MBOX_HOST) {
			lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
					"2973 SLI_CONFIG wr buffer state "
					"mismatch:x%x\n",
					phba->mbox_ext_buf_ctx.state);
			lpfc_bsg_mbox_ext_abort(phba);
			return -EPIPE;
		}
		rc = lpfc_bsg_write_ebuf_set(phba, job, dmabuf);
	}
	return rc;
}

/**
 * lpfc_bsg_handle_sli_cfg_ext - handle sli-cfg mailbox with external buffer
 * @phba: Pointer to HBA context object.
 * @mb: Pointer to a BSG mailbox object.
 * @dmabuff: Pointer to a DMA buffer descriptor.
 *
 * This routine checkes and handles non-embedded multi-buffer SLI_CONFIG
 * (0x9B) mailbox commands and external buffers.
 **/
static int
lpfc_bsg_handle_sli_cfg_ext(struct lpfc_hba *phba, struct fc_bsg_job *job,
			    struct lpfc_dmabuf *dmabuf)
{
	struct dfc_mbox_req *mbox_req;
	int rc = SLI_CONFIG_NOT_HANDLED;

	mbox_req =
	   (struct dfc_mbox_req *)job->request->rqst_data.h_vendor.vendor_cmd;

	/* mbox command with/without single external buffer */
	if (mbox_req->extMboxTag == 0 && mbox_req->extSeqNum == 0)
		return rc;

	/* mbox command and first external buffer */
	if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_IDLE) {
		if (mbox_req->extSeqNum == 1) {
			lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
					"2974 SLI_CONFIG mailbox: tag:%d, "
					"seq:%d\n", mbox_req->extMboxTag,
					mbox_req->extSeqNum);
			rc = lpfc_bsg_handle_sli_cfg_mbox(phba, job, dmabuf);
			return rc;
		} else
			goto sli_cfg_ext_error;
	}

	/*
	 * handle additional external buffers
	 */

	/* check broken pipe conditions */
	if (mbox_req->extMboxTag != phba->mbox_ext_buf_ctx.mbxTag)
		goto sli_cfg_ext_error;
	if (mbox_req->extSeqNum > phba->mbox_ext_buf_ctx.numBuf)
		goto sli_cfg_ext_error;
	if (mbox_req->extSeqNum != phba->mbox_ext_buf_ctx.seqNum + 1)
		goto sli_cfg_ext_error;

	lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
			"2975 SLI_CONFIG mailbox external buffer: "
			"extSta:x%x, tag:%d, seq:%d\n",
			phba->mbox_ext_buf_ctx.state, mbox_req->extMboxTag,
			mbox_req->extSeqNum);
	rc = lpfc_bsg_handle_sli_cfg_ebuf(phba, job, dmabuf);
	return rc;

sli_cfg_ext_error:
	/* all other cases, broken pipe */
	lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
			"2976 SLI_CONFIG mailbox broken pipe: "
			"ctxSta:x%x, ctxNumBuf:%d "
			"ctxTag:%d, ctxSeq:%d, tag:%d, seq:%d\n",
			phba->mbox_ext_buf_ctx.state,
			phba->mbox_ext_buf_ctx.numBuf,
			phba->mbox_ext_buf_ctx.mbxTag,
			phba->mbox_ext_buf_ctx.seqNum,
			mbox_req->extMboxTag, mbox_req->extSeqNum);

	lpfc_bsg_mbox_ext_session_reset(phba);

	return -EPIPE;
}

/**
 * lpfc_bsg_issue_mbox - issues a mailbox command on behalf of an app
 * @phba: Pointer to HBA context object.
 * @mb: Pointer to a mailbox object.
 * @vport: Pointer to a vport object.
 *
 * Allocate a tracking object, mailbox command memory, get a mailbox
 * from the mailbox pool, copy the caller mailbox command.
 *
 * If offline and the sli is active we need to poll for the command (port is
 * being reset) and com-plete the job, otherwise issue the mailbox command and
 * let our completion handler finish the command.
 **/
static uint32_t
lpfc_bsg_issue_mbox(struct lpfc_hba *phba, struct fc_bsg_job *job,
	struct lpfc_vport *vport)
{
	LPFC_MBOXQ_t *pmboxq = NULL; /* internal mailbox queue */
	MAILBOX_t *pmb; /* shortcut to the pmboxq mailbox */
	/* a 4k buffer to hold the mb and extended data from/to the bsg */
	uint8_t *pmbx = NULL;
	struct bsg_job_data *dd_data = NULL; /* bsg data tracking structure */
	struct lpfc_dmabuf *dmabuf = NULL;
	struct dfc_mbox_req *mbox_req;
	struct READ_EVENT_LOG_VAR *rdEventLog;
	uint32_t transmit_length, receive_length, mode;
	struct lpfc_mbx_sli4_config *sli4_config;
	struct lpfc_mbx_nembed_cmd *nembed_sge;
	struct mbox_header *header;
	struct ulp_bde64 *bde;
	uint8_t *ext = NULL;
	int rc = 0;
	uint8_t *from;
	uint32_t size;


	/* in case no data is transferred */
	job->reply->reply_payload_rcv_len = 0;

	/* sanity check to protect driver */
	if (job->reply_payload.payload_len > BSG_MBOX_SIZE ||
	    job->request_payload.payload_len > BSG_MBOX_SIZE) {
		rc = -ERANGE;
		goto job_done;
	}

	/*
	 * Don't allow mailbox commands to be sent when blocked or when in
	 * the middle of discovery
	 */
	 if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) {
		rc = -EAGAIN;
		goto job_done;
	}

	mbox_req =
	    (struct dfc_mbox_req *)job->request->rqst_data.h_vendor.vendor_cmd;

	/* check if requested extended data lengths are valid */
	if ((mbox_req->inExtWLen > BSG_MBOX_SIZE/sizeof(uint32_t)) ||
	    (mbox_req->outExtWLen > BSG_MBOX_SIZE/sizeof(uint32_t))) {
		rc = -ERANGE;
		goto job_done;
	}

	dmabuf = lpfc_bsg_dma_page_alloc(phba);
	if (!dmabuf || !dmabuf->virt) {
		rc = -ENOMEM;
		goto job_done;
	}

	/* Get the mailbox command or external buffer from BSG */
	pmbx = (uint8_t *)dmabuf->virt;
	size = job->request_payload.payload_len;
	sg_copy_to_buffer(job->request_payload.sg_list,
			  job->request_payload.sg_cnt, pmbx, size);

	/* Handle possible SLI_CONFIG with non-embedded payloads */
	if (phba->sli_rev == LPFC_SLI_REV4) {
		rc = lpfc_bsg_handle_sli_cfg_ext(phba, job, dmabuf);
		if (rc == SLI_CONFIG_HANDLED)
			goto job_cont;
		if (rc)
			goto job_done;
		/* SLI_CONFIG_NOT_HANDLED for other mailbox commands */
	}

	rc = lpfc_bsg_check_cmd_access(phba, (MAILBOX_t *)pmbx, vport);
	if (rc != 0)
		goto job_done; /* must be negative */

	/* allocate our bsg tracking structure */
	dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
	if (!dd_data) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"2727 Failed allocation of dd_data\n");
		rc = -ENOMEM;
		goto job_done;
	}

	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (!pmboxq) {
		rc = -ENOMEM;
		goto job_done;
	}
	memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));

	pmb = &pmboxq->u.mb;
	memcpy(pmb, pmbx, sizeof(*pmb));
	pmb->mbxOwner = OWN_HOST;
	pmboxq->vport = vport;

	/* If HBA encountered an error attention, allow only DUMP
	 * or RESTART mailbox commands until the HBA is restarted.
	 */
	if (phba->pport->stopped &&
	    pmb->mbxCommand != MBX_DUMP_MEMORY &&
	    pmb->mbxCommand != MBX_RESTART &&
	    pmb->mbxCommand != MBX_WRITE_VPARMS &&
	    pmb->mbxCommand != MBX_WRITE_WWN)
		lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
				"2797 mbox: Issued mailbox cmd "
				"0x%x while in stopped state.\n",
				pmb->mbxCommand);

	/* extended mailbox commands will need an extended buffer */
	if (mbox_req->inExtWLen || mbox_req->outExtWLen) {
		from = pmbx;
		ext = from + sizeof(MAILBOX_t);
		pmboxq->context2 = ext;
		pmboxq->in_ext_byte_len =
			mbox_req->inExtWLen * sizeof(uint32_t);
		pmboxq->out_ext_byte_len =
			mbox_req->outExtWLen * sizeof(uint32_t);
		pmboxq->mbox_offset_word = mbox_req->mbOffset;
	}

	/* biu diag will need a kernel buffer to transfer the data
	 * allocate our own buffer and setup the mailbox command to
	 * use ours
	 */
	if (pmb->mbxCommand == MBX_RUN_BIU_DIAG64) {
		transmit_length = pmb->un.varWords[1];
		receive_length = pmb->un.varWords[4];
		/* transmit length cannot be greater than receive length or
		 * mailbox extension size
		 */
		if ((transmit_length > receive_length) ||
			(transmit_length > BSG_MBOX_SIZE - sizeof(MAILBOX_t))) {
			rc = -ERANGE;
			goto job_done;
		}
		pmb->un.varBIUdiag.un.s2.xmit_bde64.addrHigh =
			putPaddrHigh(dmabuf->phys + sizeof(MAILBOX_t));
		pmb->un.varBIUdiag.un.s2.xmit_bde64.addrLow =
			putPaddrLow(dmabuf->phys + sizeof(MAILBOX_t));

		pmb->un.varBIUdiag.un.s2.rcv_bde64.addrHigh =
			putPaddrHigh(dmabuf->phys + sizeof(MAILBOX_t)
			  + pmb->un.varBIUdiag.un.s2.xmit_bde64.tus.f.bdeSize);
		pmb->un.varBIUdiag.un.s2.rcv_bde64.addrLow =
			putPaddrLow(dmabuf->phys + sizeof(MAILBOX_t)
			  + pmb->un.varBIUdiag.un.s2.xmit_bde64.tus.f.bdeSize);
	} else if (pmb->mbxCommand == MBX_READ_EVENT_LOG) {
		rdEventLog = &pmb->un.varRdEventLog;
		receive_length = rdEventLog->rcv_bde64.tus.f.bdeSize;
		mode = bf_get(lpfc_event_log, rdEventLog);

		/* receive length cannot be greater than mailbox
		 * extension size
		 */
		if (receive_length > BSG_MBOX_SIZE - sizeof(MAILBOX_t)) {
			rc = -ERANGE;
			goto job_done;
		}

		/* mode zero uses a bde like biu diags command */
		if (mode == 0) {
			pmb->un.varWords[3] = putPaddrLow(dmabuf->phys
							+ sizeof(MAILBOX_t));
			pmb->un.varWords[4] = putPaddrHigh(dmabuf->phys
							+ sizeof(MAILBOX_t));
		}
	} else if (phba->sli_rev == LPFC_SLI_REV4) {
		if (pmb->mbxCommand == MBX_DUMP_MEMORY) {
			/* rebuild the command for sli4 using our own buffers
			* like we do for biu diags
			*/
			receive_length = pmb->un.varWords[2];
			/* receive length cannot be greater than mailbox
			 * extension size
			 */
			if (receive_length == 0) {
				rc = -ERANGE;
				goto job_done;
			}
			pmb->un.varWords[3] = putPaddrLow(dmabuf->phys
						+ sizeof(MAILBOX_t));
			pmb->un.varWords[4] = putPaddrHigh(dmabuf->phys
						+ sizeof(MAILBOX_t));
		} else if ((pmb->mbxCommand == MBX_UPDATE_CFG) &&
			pmb->un.varUpdateCfg.co) {
			bde = (struct ulp_bde64 *)&pmb->un.varWords[4];

			/* bde size cannot be greater than mailbox ext size */
			if (bde->tus.f.bdeSize >
			    BSG_MBOX_SIZE - sizeof(MAILBOX_t)) {
				rc = -ERANGE;
				goto job_done;
			}
			bde->addrHigh = putPaddrHigh(dmabuf->phys
						+ sizeof(MAILBOX_t));
			bde->addrLow = putPaddrLow(dmabuf->phys
						+ sizeof(MAILBOX_t));
		} else if (pmb->mbxCommand == MBX_SLI4_CONFIG) {
			/* Handling non-embedded SLI_CONFIG mailbox command */
			sli4_config = &pmboxq->u.mqe.un.sli4_config;
			if (!bf_get(lpfc_mbox_hdr_emb,
			    &sli4_config->header.cfg_mhdr)) {
				/* rebuild the command for sli4 using our
				 * own buffers like we do for biu diags
				 */
				header = (struct mbox_header *)
						&pmb->un.varWords[0];
				nembed_sge = (struct lpfc_mbx_nembed_cmd *)
						&pmb->un.varWords[0];
				receive_length = nembed_sge->sge[0].length;

				/* receive length cannot be greater than
				 * mailbox extension size
				 */
				if ((receive_length == 0) ||
				    (receive_length >
				     BSG_MBOX_SIZE - sizeof(MAILBOX_t))) {
					rc = -ERANGE;
					goto job_done;
				}

				nembed_sge->sge[0].pa_hi =
						putPaddrHigh(dmabuf->phys
						   + sizeof(MAILBOX_t));
				nembed_sge->sge[0].pa_lo =
						putPaddrLow(dmabuf->phys
						   + sizeof(MAILBOX_t));
			}
		}
	}

	dd_data->context_un.mbox.dmabuffers = dmabuf;

	/* setup wake call as IOCB callback */
	pmboxq->mbox_cmpl = lpfc_bsg_issue_mbox_cmpl;

	/* setup context field to pass wait_queue pointer to wake function */
	pmboxq->context1 = dd_data;
	dd_data->type = TYPE_MBOX;
	dd_data->context_un.mbox.pmboxq = pmboxq;
	dd_data->context_un.mbox.mb = (MAILBOX_t *)pmbx;
	dd_data->context_un.mbox.set_job = job;
	dd_data->context_un.mbox.ext = ext;
	dd_data->context_un.mbox.mbOffset = mbox_req->mbOffset;
	dd_data->context_un.mbox.inExtWLen = mbox_req->inExtWLen;
	dd_data->context_un.mbox.outExtWLen = mbox_req->outExtWLen;
	job->dd_data = dd_data;

	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
	    (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE))) {
		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
		if (rc != MBX_SUCCESS) {
			rc = (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV;
			goto job_done;
		}

		/* job finished, copy the data */
		memcpy(pmbx, pmb, sizeof(*pmb));
		job->reply->reply_payload_rcv_len =
			sg_copy_from_buffer(job->reply_payload.sg_list,
					    job->reply_payload.sg_cnt,
					    pmbx, size);
		/* not waiting mbox already done */
		rc = 0;
		goto job_done;
	}

	rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
	if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY))
		return 1; /* job started */

job_done:
	/* common exit for error or job completed inline */
	if (pmboxq)
		mempool_free(pmboxq, phba->mbox_mem_pool);
	lpfc_bsg_dma_page_free(phba, dmabuf);
	kfree(dd_data);

job_cont:
	return rc;
}

/**
 * lpfc_bsg_mbox_cmd - process an fc bsg LPFC_BSG_VENDOR_MBOX command
 * @job: MBOX fc_bsg_job for LPFC_BSG_VENDOR_MBOX.
 **/
static int
lpfc_bsg_mbox_cmd(struct fc_bsg_job *job)
{
	struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
	struct lpfc_hba *phba = vport->phba;
	struct dfc_mbox_req *mbox_req;
	int rc = 0;

	/* mix-and-match backward compatibility */
	job->reply->reply_payload_rcv_len = 0;
	if (job->request_len <
	    sizeof(struct fc_bsg_request) + sizeof(struct dfc_mbox_req)) {
		lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
				"2737 Mix-and-match backward compability "
				"between MBOX_REQ old size:%d and "
				"new request size:%d\n",
				(int)(job->request_len -
				      sizeof(struct fc_bsg_request)),
				(int)sizeof(struct dfc_mbox_req));
		mbox_req = (struct dfc_mbox_req *)
				job->request->rqst_data.h_vendor.vendor_cmd;
		mbox_req->extMboxTag = 0;
		mbox_req->extSeqNum = 0;
	}

	rc = lpfc_bsg_issue_mbox(phba, job, vport);

	if (rc == 0) {
		/* job done */
		job->reply->result = 0;
		job->dd_data = NULL;
		job->job_done(job);
	} else if (rc == 1)
		/* job submitted, will complete later*/
		rc = 0; /* return zero, no error */
	else {
		/* some error occurred */
		job->reply->result = rc;
		job->dd_data = NULL;
	}

	return rc;
}

/**
 * lpfc_bsg_menlo_cmd_cmp - lpfc_menlo_cmd completion handler
 * @phba: Pointer to HBA context object.
 * @cmdiocbq: Pointer to command iocb.
 * @rspiocbq: Pointer to response iocb.
 *
 * This function is the completion handler for iocbs issued using
 * lpfc_menlo_cmd function. This function is called by the
 * ring event handler function without any lock held. This function
 * can be called from both worker thread context and interrupt
 * context. This function also can be called from another thread which
 * cleans up the SLI layer objects.
 * This function copies the contents of the response iocb to the
 * response iocb memory object provided by the caller of
 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
 * sleeps for the iocb completion.
 **/
static void
lpfc_bsg_menlo_cmd_cmp(struct lpfc_hba *phba,
			struct lpfc_iocbq *cmdiocbq,
			struct lpfc_iocbq *rspiocbq)
{
	struct bsg_job_data *dd_data;
	struct fc_bsg_job *job;
	IOCB_t *rsp;
	struct lpfc_dmabuf *bmp;
	struct lpfc_bsg_menlo *menlo;
	unsigned long flags;
	struct menlo_response *menlo_resp;
	int rc = 0;

	spin_lock_irqsave(&phba->ct_ev_lock, flags);
	dd_data = cmdiocbq->context1;
	if (!dd_data) {
		spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
		return;
	}

	menlo = &dd_data->context_un.menlo;
	job = menlo->set_job;
	job->dd_data = NULL; /* so timeout handler does not reply */

	spin_lock(&phba->hbalock);
	cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
	if (cmdiocbq->context2 && rspiocbq)
		memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
		       &rspiocbq->iocb, sizeof(IOCB_t));
	spin_unlock(&phba->hbalock);

	bmp = menlo->bmp;
	rspiocbq = menlo->rspiocbq;
	rsp = &rspiocbq->iocb;

	pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
		     job->request_payload.sg_cnt, DMA_TO_DEVICE);
	pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
		     job->reply_payload.sg_cnt, DMA_FROM_DEVICE);

	/* always return the xri, this would be used in the case
	 * of a menlo download to allow the data to be sent as a continuation
	 * of the exchange.
	 */
	menlo_resp = (struct menlo_response *)
		job->reply->reply_data.vendor_reply.vendor_rsp;
	menlo_resp->xri = rsp->ulpContext;
	if (rsp->ulpStatus) {
		if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
			switch (rsp->un.ulpWord[4] & 0xff) {
			case IOERR_SEQUENCE_TIMEOUT:
				rc = -ETIMEDOUT;
				break;
			case IOERR_INVALID_RPI:
				rc = -EFAULT;
				break;
			default:
				rc = -EACCES;
				break;
			}
		} else
			rc = -EACCES;
	} else
		job->reply->reply_payload_rcv_len =
			rsp->un.genreq64.bdl.bdeSize;

	lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
	lpfc_sli_release_iocbq(phba, rspiocbq);
	lpfc_sli_release_iocbq(phba, cmdiocbq);
	kfree(bmp);
	kfree(dd_data);
	/* make error code available to userspace */
	job->reply->result = rc;
	/* complete the job back to userspace */
	job->job_done(job);
	spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
	return;
}

/**
 * lpfc_menlo_cmd - send an ioctl for menlo hardware
 * @job: fc_bsg_job to handle
 *
 * This function issues a gen request 64 CR ioctl for all menlo cmd requests,
 * all the command completions will return the xri for the command.
 * For menlo data requests a gen request 64 CX is used to continue the exchange
 * supplied in the menlo request header xri field.
 **/
static int
lpfc_menlo_cmd(struct fc_bsg_job *job)
{
	struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
	struct lpfc_hba *phba = vport->phba;
	struct lpfc_iocbq *cmdiocbq, *rspiocbq;
	IOCB_t *cmd, *rsp;
	int rc = 0;
	struct menlo_command *menlo_cmd;
	struct menlo_response *menlo_resp;
	struct lpfc_dmabuf *bmp = NULL;
	int request_nseg;
	int reply_nseg;
	struct scatterlist *sgel = NULL;
	int numbde;
	dma_addr_t busaddr;
	struct bsg_job_data *dd_data;
	struct ulp_bde64 *bpl = NULL;

	/* in case no data is returned return just the return code */
	job->reply->reply_payload_rcv_len = 0;

	if (job->request_len <
	    sizeof(struct fc_bsg_request) +
		sizeof(struct menlo_command)) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"2784 Received MENLO_CMD request below "
				"minimum size\n");
		rc = -ERANGE;
		goto no_dd_data;
	}

	if (job->reply_len <
	    sizeof(struct fc_bsg_request) + sizeof(struct menlo_response)) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"2785 Received MENLO_CMD reply below "
				"minimum size\n");
		rc = -ERANGE;
		goto no_dd_data;
	}

	if (!(phba->menlo_flag & HBA_MENLO_SUPPORT)) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"2786 Adapter does not support menlo "
				"commands\n");
		rc = -EPERM;
		goto no_dd_data;
	}

	menlo_cmd = (struct menlo_command *)
		job->request->rqst_data.h_vendor.vendor_cmd;

	menlo_resp = (struct menlo_response *)
		job->reply->reply_data.vendor_reply.vendor_rsp;

	/* allocate our bsg tracking structure */
	dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
	if (!dd_data) {
		lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
				"2787 Failed allocation of dd_data\n");
		rc = -ENOMEM;
		goto no_dd_data;
	}

	bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
	if (!bmp) {
		rc = -ENOMEM;
		goto free_dd;
	}

	cmdiocbq = lpfc_sli_get_iocbq(phba);
	if (!cmdiocbq) {
		rc = -ENOMEM;
		goto free_bmp;
	}

	rspiocbq = lpfc_sli_get_iocbq(phba);
	if (!rspiocbq) {
		rc = -ENOMEM;
		goto free_cmdiocbq;
	}

	rsp = &rspiocbq->iocb;

	bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
	if (!bmp->virt) {
		rc = -ENOMEM;
		goto free_rspiocbq;
	}

	INIT_LIST_HEAD(&bmp->list);
	bpl = (struct ulp_bde64 *) bmp->virt;
	request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list,
				  job->request_payload.sg_cnt, DMA_TO_DEVICE);
	for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) {
		busaddr = sg_dma_address(sgel);
		bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
		bpl->tus.f.bdeSize = sg_dma_len(sgel);
		bpl->tus.w = cpu_to_le32(bpl->tus.w);
		bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
		bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
		bpl++;
	}

	reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list,
				job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
	for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) {
		busaddr = sg_dma_address(sgel);
		bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
		bpl->tus.f.bdeSize = sg_dma_len(sgel);
		bpl->tus.w = cpu_to_le32(bpl->tus.w);
		bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
		bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
		bpl++;
	}

	cmd = &cmdiocbq->iocb;
	cmd->un.genreq64.bdl.ulpIoTag32 = 0;
	cmd->un.genreq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
	cmd->un.genreq64.bdl.addrLow = putPaddrLow(bmp->phys);
	cmd->un.genreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
	cmd->un.genreq64.bdl.bdeSize =
	    (request_nseg + reply_nseg) * sizeof(struct ulp_bde64);
	cmd->un.genreq64.w5.hcsw.Fctl = (SI | LA);
	cmd->un.genreq64.w5.hcsw.Dfctl = 0;
	cmd->un.genreq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CMD;
	cmd->un.genreq64.w5.hcsw.Type = MENLO_TRANSPORT_TYPE; /* 0xfe */
	cmd->ulpBdeCount = 1;
	cmd->ulpClass = CLASS3;
	cmd->ulpOwner = OWN_CHIP;
	cmd->ulpLe = 1; /* Limited Edition */
	cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
	cmdiocbq->vport = phba->pport;
	/* We want the firmware to timeout before we do */
	cmd->ulpTimeout = MENLO_TIMEOUT - 5;
	cmdiocbq->context3 = bmp;
	cmdiocbq->context2 = rspiocbq;
	cmdiocbq->iocb_cmpl = lpfc_bsg_menlo_cmd_cmp;
	cmdiocbq->context1 = dd_data;
	cmdiocbq->context2 = rspiocbq;
	if (menlo_cmd->cmd == LPFC_BSG_VENDOR_MENLO_CMD) {
		cmd->ulpCommand = CMD_GEN_REQUEST64_CR;
		cmd->ulpPU = MENLO_PU; /* 3 */
		cmd->un.ulpWord[4] = MENLO_DID; /* 0x0000FC0E */
		cmd->ulpContext = MENLO_CONTEXT; /* 0 */
	} else {
		cmd->ulpCommand = CMD_GEN_REQUEST64_CX;
		cmd->ulpPU = 1;
		cmd->un.ulpWord[4] = 0;
		cmd->ulpContext = menlo_cmd->xri;
	}

	dd_data->type = TYPE_MENLO;
	dd_data->context_un.menlo.cmdiocbq = cmdiocbq;
	dd_data->context_un.menlo.rspiocbq = rspiocbq;
	dd_data->context_un.menlo.set_job = job;
	dd_data->context_un.menlo.bmp = bmp;

	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq,
		MENLO_TIMEOUT - 5);
	if (rc == IOCB_SUCCESS)
		return 0; /* done for now */

	/* iocb failed so cleanup */
	pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
		     job->request_payload.sg_cnt, DMA_TO_DEVICE);
	pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
		     job->reply_payload.sg_cnt, DMA_FROM_DEVICE);

	lpfc_mbuf_free(phba, bmp->virt, bmp->phys);

free_rspiocbq:
	lpfc_sli_release_iocbq(phba, rspiocbq);
free_cmdiocbq:
	lpfc_sli_release_iocbq(phba, cmdiocbq);
free_bmp:
	kfree(bmp);
free_dd:
	kfree(dd_data);
no_dd_data:
	/* make error code available to userspace */
	job->reply->result = rc;
	job->dd_data = NULL;
	return rc;
}

/**
 * lpfc_bsg_hst_vendor - process a vendor-specific fc_bsg_job
 * @job: fc_bsg_job to handle
 **/
static int
lpfc_bsg_hst_vendor(struct fc_bsg_job *job)
{
	int command = job->request->rqst_data.h_vendor.vendor_cmd[0];
	int rc;

	switch (command) {
	case LPFC_BSG_VENDOR_SET_CT_EVENT:
		rc = lpfc_bsg_hba_set_event(job);
		break;
	case LPFC_BSG_VENDOR_GET_CT_EVENT:
		rc = lpfc_bsg_hba_get_event(job);
		break;
	case LPFC_BSG_VENDOR_SEND_MGMT_RESP:
		rc = lpfc_bsg_send_mgmt_rsp(job);
		break;
	case LPFC_BSG_VENDOR_DIAG_MODE:
		rc = lpfc_bsg_diag_loopback_mode(job);
		break;
	case LPFC_BSG_VENDOR_DIAG_MODE_END:
		rc = lpfc_sli4_bsg_diag_mode_end(job);
		break;
	case LPFC_BSG_VENDOR_DIAG_RUN_LOOPBACK:
		rc = lpfc_bsg_diag_loopback_run(job);
		break;
	case LPFC_BSG_VENDOR_LINK_DIAG_TEST:
		rc = lpfc_sli4_bsg_link_diag_test(job);
		break;
	case LPFC_BSG_VENDOR_GET_MGMT_REV:
		rc = lpfc_bsg_get_dfc_rev(job);
		break;
	case LPFC_BSG_VENDOR_MBOX:
		rc = lpfc_bsg_mbox_cmd(job);
		break;
	case LPFC_BSG_VENDOR_MENLO_CMD:
	case LPFC_BSG_VENDOR_MENLO_DATA:
		rc = lpfc_menlo_cmd(job);
		break;
	default:
		rc = -EINVAL;
		job->reply->reply_payload_rcv_len = 0;
		/* make error code available to userspace */
		job->reply->result = rc;
		break;
	}

	return rc;
}

/**
 * lpfc_bsg_request - handle a bsg request from the FC transport
 * @job: fc_bsg_job to handle
 **/
int
lpfc_bsg_request(struct fc_bsg_job *job)
{
	uint32_t msgcode;
	int rc;

	msgcode = job->request->msgcode;
	switch (msgcode) {
	case FC_BSG_HST_VENDOR:
		rc = lpfc_bsg_hst_vendor(job);
		break;
	case FC_BSG_RPT_ELS:
		rc = lpfc_bsg_rport_els(job);
		break;
	case FC_BSG_RPT_CT:
		rc = lpfc_bsg_send_mgmt_cmd(job);
		break;
	default:
		rc = -EINVAL;
		job->reply->reply_payload_rcv_len = 0;
		/* make error code available to userspace */
		job->reply->result = rc;
		break;
	}

	return rc;
}

/**
 * lpfc_bsg_timeout - handle timeout of a bsg request from the FC transport
 * @job: fc_bsg_job that has timed out
 *
 * This function just aborts the job's IOCB.  The aborted IOCB will return to
 * the waiting function which will handle passing the error back to userspace
 **/
int
lpfc_bsg_timeout(struct fc_bsg_job *job)
{
	struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
	struct lpfc_hba *phba = vport->phba;
	struct lpfc_iocbq *cmdiocb;
	struct lpfc_bsg_event *evt;
	struct lpfc_bsg_iocb *iocb;
	struct lpfc_bsg_mbox *mbox;
	struct lpfc_bsg_menlo *menlo;
	struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
	struct bsg_job_data *dd_data;
	unsigned long flags;

	spin_lock_irqsave(&phba->ct_ev_lock, flags);
	dd_data = (struct bsg_job_data *)job->dd_data;
	/* timeout and completion crossed paths if no dd_data */
	if (!dd_data) {
		spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
		return 0;
	}

	switch (dd_data->type) {
	case TYPE_IOCB:
		iocb = &dd_data->context_un.iocb;
		cmdiocb = iocb->cmdiocbq;
		/* hint to completion handler that the job timed out */
		job->reply->result = -EAGAIN;
		spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
		/* this will call our completion handler */
		spin_lock_irq(&phba->hbalock);
		lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb);
		spin_unlock_irq(&phba->hbalock);
		break;
	case TYPE_EVT:
		evt = dd_data->context_un.evt;
		/* this event has no job anymore */
		evt->set_job = NULL;
		job->dd_data = NULL;
		job->reply->reply_payload_rcv_len = 0;
		/* Return -EAGAIN which is our way of signallying the
		 * app to retry.
		 */
		job->reply->result = -EAGAIN;
		spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
		job->job_done(job);
		break;
	case TYPE_MBOX:
		mbox = &dd_data->context_un.mbox;
		/* this mbox has no job anymore */
		mbox->set_job = NULL;
		job->dd_data = NULL;
		job->reply->reply_payload_rcv_len = 0;
		job->reply->result = -EAGAIN;
		/* the mbox completion handler can now be run */
		spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
		job->job_done(job);
		if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_PORT)
			phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_ABTS;
		break;
	case TYPE_MENLO:
		menlo = &dd_data->context_un.menlo;
		cmdiocb = menlo->cmdiocbq;
		/* hint to completion handler that the job timed out */
		job->reply->result = -EAGAIN;
		spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
		/* this will call our completion handler */
		spin_lock_irq(&phba->hbalock);
		lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb);
		spin_unlock_irq(&phba->hbalock);
		break;
	default:
		spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
		break;
	}

	/* scsi transport fc fc_bsg_job_timeout expects a zero return code,
	 * otherwise an error message will be displayed on the console
	 * so always return success (zero)
	 */
	return 0;
}