Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 | /* fdomain.c -- Future Domain TMC-16x0 SCSI driver * Created: Sun May 3 18:53:19 1992 by faith@cs.unc.edu * Revised: Mon Dec 28 21:59:02 1998 by faith@acm.org * Author: Rickard E. Faith, faith@cs.unc.edu * Copyright 1992-1996, 1998 Rickard E. Faith (faith@acm.org) * Shared IRQ supported added 7/7/2001 Alan Cox <alan@redhat.com> * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2, or (at your option) any * later version. * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 675 Mass Ave, Cambridge, MA 02139, USA. ************************************************************************** SUMMARY: Future Domain BIOS versions supported for autodetect: 2.0, 3.0, 3.2, 3.4 (1.0), 3.5 (2.0), 3.6, 3.61 Chips are supported: TMC-1800, TMC-18C50, TMC-18C30, TMC-36C70 Boards supported: Future Domain TMC-1650, TMC-1660, TMC-1670, TMC-1680, TMC-1610M/MER/MEX Future Domain TMC-3260 (PCI) Quantum ISA-200S, ISA-250MG Adaptec AHA-2920A (PCI) [BUT *NOT* AHA-2920C -- use aic7xxx instead] IBM ? LILO/INSMOD command-line options: fdomain=<PORT_BASE>,<IRQ>[,<ADAPTER_ID>] NOTE: The Adaptec AHA-2920C has an Adaptec AIC-7850 chip on it. Use the aic7xxx driver for this board. The Adaptec AHA-2920A has a Future Domain chip on it, so this is the right driver for that card. Unfortunately, the boxes will probably just say "2920", so you'll have to look on the card for a Future Domain logo, or a letter after the 2920. THANKS: Thanks to Adaptec for providing PCI boards for testing. This finally enabled me to test the PCI detection and correct it for PCI boards that do not have a BIOS at a standard ISA location. For PCI boards, LILO/INSMOD command-line options should no longer be needed. --RF 18Nov98 DESCRIPTION: This is the Linux low-level SCSI driver for Future Domain TMC-1660/1680 TMC-1650/1670, and TMC-3260 SCSI host adapters. The 1650 and 1670 have a 25-pin external connector, whereas the 1660 and 1680 have a SCSI-2 50-pin high-density external connector. The 1670 and 1680 have floppy disk controllers built in. The TMC-3260 is a PCI bus card. Future Domain's older boards are based on the TMC-1800 chip, and this driver was originally written for a TMC-1680 board with the TMC-1800 chip. More recently, boards are being produced with the TMC-18C50 and TMC-18C30 chips. The latest and greatest board may not work with this driver. If you have to patch this driver so that it will recognize your board's BIOS signature, then the driver may fail to function after the board is detected. Please note that the drive ordering that Future Domain implemented in BIOS versions 3.4 and 3.5 is the opposite of the order (currently) used by the rest of the SCSI industry. If you have BIOS version 3.4 or 3.5, and have more then one drive, then the drive ordering will be the reverse of that which you see under DOS. For example, under DOS SCSI ID 0 will be D: and SCSI ID 1 will be C: (the boot device). Under Linux, SCSI ID 0 will be /dev/sda and SCSI ID 1 will be /dev/sdb. The Linux ordering is consistent with that provided by all the other SCSI drivers for Linux. If you want this changed, you will probably have to patch the higher level SCSI code. If you do so, please send me patches that are protected by #ifdefs. If you have a TMC-8xx or TMC-9xx board, then this is not the driver for your board. Please refer to the Seagate driver for more information and possible support. HISTORY: Linux Driver Driver Version Version Date Support/Notes 0.0 3 May 1992 V2.0 BIOS; 1800 chip 0.97 1.9 28 Jul 1992 0.98.6 3.1 27 Nov 1992 0.99 3.2 9 Dec 1992 0.99.3 3.3 10 Jan 1993 V3.0 BIOS 0.99.5 3.5 18 Feb 1993 0.99.10 3.6 15 May 1993 V3.2 BIOS; 18C50 chip 0.99.11 3.17 3 Jul 1993 (now under RCS) 0.99.12 3.18 13 Aug 1993 0.99.14 5.6 31 Oct 1993 (reselection code removed) 0.99.15 5.9 23 Jan 1994 V3.4 BIOS (preliminary) 1.0.8/1.1.1 5.15 1 Apr 1994 V3.4 BIOS; 18C30 chip (preliminary) 1.0.9/1.1.3 5.16 7 Apr 1994 V3.4 BIOS; 18C30 chip 1.1.38 5.18 30 Jul 1994 36C70 chip (PCI version of 18C30) 1.1.62 5.20 2 Nov 1994 V3.5 BIOS 1.1.73 5.22 7 Dec 1994 Quantum ISA-200S board; V2.0 BIOS 1.1.82 5.26 14 Jan 1995 V3.5 BIOS; TMC-1610M/MER/MEX board 1.2.10 5.28 5 Jun 1995 Quantum ISA-250MG board; V2.0, V2.01 BIOS 1.3.4 5.31 23 Jun 1995 PCI BIOS-32 detection (preliminary) 1.3.7 5.33 4 Jul 1995 PCI BIOS-32 detection 1.3.28 5.36 17 Sep 1995 V3.61 BIOS; LILO command-line support 1.3.34 5.39 12 Oct 1995 V3.60 BIOS; /proc 1.3.72 5.39 8 Feb 1996 Adaptec AHA-2920 board 1.3.85 5.41 4 Apr 1996 2.0.12 5.44 8 Aug 1996 Use ID 7 for all PCI cards 2.1.1 5.45 2 Oct 1996 Update ROM accesses for 2.1.x 2.1.97 5.46 23 Apr 1998 Rewritten PCI detection routines [mj] 2.1.11x 5.47 9 Aug 1998 Touched for 8 SCSI disk majors support 5.48 18 Nov 1998 BIOS no longer needed for PCI detection 2.2.0 5.50 28 Dec 1998 Support insmod parameters REFERENCES USED: "TMC-1800 SCSI Chip Specification (FDC-1800T)", Future Domain Corporation, 1990. "Technical Reference Manual: 18C50 SCSI Host Adapter Chip", Future Domain Corporation, January 1992. "LXT SCSI Products: Specifications and OEM Technical Manual (Revision B/September 1991)", Maxtor Corporation, 1991. "7213S product Manual (Revision P3)", Maxtor Corporation, 1992. "Draft Proposed American National Standard: Small Computer System Interface - 2 (SCSI-2)", Global Engineering Documents. (X3T9.2/86-109, revision 10h, October 17, 1991) Private communications, Drew Eckhardt (drew@cs.colorado.edu) and Eric Youngdale (ericy@cais.com), 1992. Private communication, Tuong Le (Future Domain Engineering department), 1994. (Disk geometry computations for Future Domain BIOS version 3.4, and TMC-18C30 detection.) Hogan, Thom. The Programmer's PC Sourcebook. Microsoft Press, 1988. Page 60 (2.39: Disk Partition Table Layout). "18C30 Technical Reference Manual", Future Domain Corporation, 1993, page 6-1. NOTES ON REFERENCES: The Maxtor manuals were free. Maxtor telephone technical support is great! The Future Domain manuals were $25 and $35. They document the chip, not the TMC-16x0 boards, so some information I had to guess at. In 1992, Future Domain sold DOS BIOS source for $250 and the UN*X driver source was $750, but these required a non-disclosure agreement, so even if I could have afforded them, they would *not* have been useful for writing this publically distributable driver. Future Domain technical support has provided some information on the phone and have sent a few useful FAXs. They have been much more helpful since they started to recognize that the word "Linux" refers to an operating system :-). ALPHA TESTERS: There are many other alpha testers that come and go as the driver develops. The people listed here were most helpful in times of greatest need (mostly early on -- I've probably left out a few worthy people in more recent times): Todd Carrico (todd@wutc.wustl.edu), Dan Poirier (poirier@cs.unc.edu ), Ken Corey (kenc@sol.acs.unt.edu), C. de Bruin (bruin@bruin@sterbbs.nl), Sakari Aaltonen (sakaria@vipunen.hit.fi), John Rice (rice@xanth.cs.odu.edu), Brad Yearwood (brad@optilink.com), and Ray Toy (toy@soho.crd.ge.com). Special thanks to Tien-Wan Yang (twyang@cs.uh.edu), who graciously lent me his 18C50-based card for debugging. He is the sole reason that this driver works with the 18C50 chip. Thanks to Dave Newman (dnewman@crl.com) for providing initial patches for the version 3.4 BIOS. Thanks to James T. McKinley (mckinley@msupa.pa.msu.edu) for providing patches that support the TMC-3260, a PCI bus card with the 36C70 chip. The 36C70 chip appears to be "completely compatible" with the 18C30 chip. Thanks to Eric Kasten (tigger@petroglyph.cl.msu.edu) for providing the patch for the version 3.5 BIOS. Thanks for Stephen Henson (shenson@nyx10.cs.du.edu) for providing the patch for the Quantum ISA-200S SCSI adapter. Thanks to Adam Bowen for the signature to the 1610M/MER/MEX scsi cards, to Martin Andrews (andrewm@ccfadm.eeg.ccf.org) for the signature to some random TMC-1680 repackaged by IBM; and to Mintak Ng (mintak@panix.com) for the version 3.61 BIOS signature. Thanks for Mark Singer (elf@netcom.com) and Richard Simpson (rsimpson@ewrcsdra.demon.co.uk) for more Quantum signatures and detective work on the Quantum RAM layout. Special thanks to James T. McKinley (mckinley@msupa.pa.msu.edu) for providing patches for proper PCI BIOS32-mediated detection of the TMC-3260 card (a PCI bus card with the 36C70 chip). Please send James PCI-related bug reports. Thanks to Tom Cavin (tec@usa1.com) for preliminary command-line option patches. New PCI detection code written by Martin Mares <mj@atrey.karlin.mff.cuni.cz> Insmod parameter code based on patches from Daniel Graham <graham@balance.uoregon.edu>. All of the alpha testers deserve much thanks. NOTES ON USER DEFINABLE OPTIONS: DEBUG: This turns on the printing of various debug information. ENABLE_PARITY: This turns on SCSI parity checking. With the current driver, all attached devices must support SCSI parity. If none of your devices support parity, then you can probably get the driver to work by turning this option off. I have no way of testing this, however, and it would appear that no one ever uses this option. FIFO_COUNT: The host adapter has an 8K cache (host adapters based on the 18C30 chip have a 2k cache). When this many 512 byte blocks are filled by the SCSI device, an interrupt will be raised. Therefore, this could be as low as 0, or as high as 16. Note, however, that values which are too high or too low seem to prevent any interrupts from occurring, and thereby lock up the machine. I have found that 2 is a good number, but throughput may be increased by changing this value to values which are close to 2. Please let me know if you try any different values. DO_DETECT: This activates some old scan code which was needed before the high level drivers got fixed. If you are having trouble with the driver, turning this on should not hurt, and might help. Please let me know if this is the case, since this code will be removed from future drivers. RESELECTION: This is no longer an option, since I gave up trying to implement it in version 4.x of this driver. It did not improve performance at all and made the driver unstable (because I never found one of the two race conditions which were introduced by the multiple outstanding command code). The instability seems a very high price to pay just so that you don't have to wait for the tape to rewind. If you want this feature implemented, send me patches. I'll be happy to send a copy of my (broken) driver to anyone who would like to see a copy. **************************************************************************/ #include <linux/module.h> #ifdef PCMCIA #undef MODULE #endif #include <linux/init.h> #include <linux/sched.h> #include <asm/io.h> #include <linux/blk.h> #include "scsi.h" #include "hosts.h" #include "fdomain.h" #include <asm/system.h> #include <linux/spinlock.h> #include <linux/errno.h> #include <linux/string.h> #include <linux/ioport.h> #include <linux/proc_fs.h> #include <linux/pci.h> #include <linux/stat.h> #include <linux/delay.h> #include <linux/config.h> /* for CONFIG_PCI */ #define VERSION "$Revision: 5.50 $" /* START OF USER DEFINABLE OPTIONS */ #define DEBUG 1 /* Enable debugging output */ #define ENABLE_PARITY 1 /* Enable SCSI Parity */ #define FIFO_COUNT 2 /* Number of 512 byte blocks before INTR */ #define DO_DETECT 0 /* Do device detection here (see scsi.c) */ /* END OF USER DEFINABLE OPTIONS */ #if DEBUG #define EVERY_ACCESS 0 /* Write a line on every scsi access */ #define ERRORS_ONLY 1 /* Only write a line if there is an error */ #define DEBUG_DETECT 0 /* Debug fdomain_16x0_detect() */ #define DEBUG_MESSAGES 1 /* Debug MESSAGE IN phase */ #define DEBUG_ABORT 1 /* Debug abort() routine */ #define DEBUG_RESET 1 /* Debug reset() routine */ #define DEBUG_RACE 1 /* Debug interrupt-driven race condition */ #else #define EVERY_ACCESS 0 /* LEAVE THESE ALONE--CHANGE THE ONES ABOVE */ #define ERRORS_ONLY 0 #define DEBUG_DETECT 0 #define DEBUG_MESSAGES 0 #define DEBUG_ABORT 0 #define DEBUG_RESET 0 #define DEBUG_RACE 0 #endif /* Errors are reported on the line, so we don't need to report them again */ #if EVERY_ACCESS #undef ERRORS_ONLY #define ERRORS_ONLY 0 #endif #if ENABLE_PARITY #define PARITY_MASK 0x08 #else #define PARITY_MASK 0x00 #endif enum chip_type { unknown = 0x00, tmc1800 = 0x01, tmc18c50 = 0x02, tmc18c30 = 0x03, }; enum { in_arbitration = 0x02, in_selection = 0x04, in_other = 0x08, disconnect = 0x10, aborted = 0x20, sent_ident = 0x40, }; enum in_port_type { Read_SCSI_Data = 0, SCSI_Status = 1, TMC_Status = 2, FIFO_Status = 3, /* tmc18c50/tmc18c30 only */ Interrupt_Cond = 4, /* tmc18c50/tmc18c30 only */ LSB_ID_Code = 5, MSB_ID_Code = 6, Read_Loopback = 7, SCSI_Data_NoACK = 8, Interrupt_Status = 9, Configuration1 = 10, Configuration2 = 11, /* tmc18c50/tmc18c30 only */ Read_FIFO = 12, FIFO_Data_Count = 14 }; enum out_port_type { Write_SCSI_Data = 0, SCSI_Cntl = 1, Interrupt_Cntl = 2, SCSI_Mode_Cntl = 3, TMC_Cntl = 4, Memory_Cntl = 5, /* tmc18c50/tmc18c30 only */ Write_Loopback = 7, IO_Control = 11, /* tmc18c30 only */ Write_FIFO = 12 }; static int port_base = 0; static unsigned long bios_base = 0; static int bios_major = 0; static int bios_minor = 0; static int PCI_bus = 0; static int Quantum = 0; /* Quantum board variant */ static int interrupt_level = 0; static volatile int in_command = 0; static Scsi_Cmnd *current_SC = NULL; static enum chip_type chip = unknown; static int adapter_mask = 0; static int this_id = 0; static int setup_called = 0; #if DEBUG_RACE static volatile int in_interrupt_flag = 0; #endif static int SCSI_Mode_Cntl_port; static int FIFO_Data_Count_port; static int Interrupt_Cntl_port; static int Interrupt_Status_port; static int Read_FIFO_port; static int Read_SCSI_Data_port; static int SCSI_Cntl_port; static int SCSI_Data_NoACK_port; static int SCSI_Status_port; static int TMC_Cntl_port; static int TMC_Status_port; static int Write_FIFO_port; static int Write_SCSI_Data_port; static int FIFO_Size = 0x2000; /* 8k FIFO for pre-tmc18c30 chips */ extern void do_fdomain_16x0_intr( int irq, void *dev_id, struct pt_regs * regs ); #ifdef MODULE /* Allow insmod parameters to be like LILO parameters. For example: insmod fdomain fdomain=0x140,11 */ static char * fdomain = NULL; MODULE_PARM(fdomain, "s"); #endif static unsigned long addresses[] = { 0xc8000, 0xca000, 0xce000, 0xde000, 0xcc000, /* Extra addresses for PCI boards */ 0xd0000, 0xe0000, }; #define ADDRESS_COUNT (sizeof( addresses ) / sizeof( unsigned )) static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 }; #define PORT_COUNT (sizeof( ports ) / sizeof( unsigned short )) static unsigned short ints[] = { 3, 5, 10, 11, 12, 14, 15, 0 }; /* READ THIS BEFORE YOU ADD A SIGNATURE! READING THIS SHORT NOTE CAN SAVE YOU LOTS OF TIME! READ EVERY WORD, ESPECIALLY THE WORD *NOT* This driver works *ONLY* for Future Domain cards using the TMC-1800, TMC-18C50, or TMC-18C30 chip. This includes models TMC-1650, 1660, 1670, and 1680. These are all 16-bit cards. The following BIOS signature signatures are for boards which do *NOT* work with this driver (these TMC-8xx and TMC-9xx boards may work with the Seagate driver): FUTURE DOMAIN CORP. (C) 1986-1988 V4.0I 03/16/88 FUTURE DOMAIN CORP. (C) 1986-1989 V5.0C2/14/89 FUTURE DOMAIN CORP. (C) 1986-1989 V6.0A7/28/89 FUTURE DOMAIN CORP. (C) 1986-1990 V6.0105/31/90 FUTURE DOMAIN CORP. (C) 1986-1990 V6.0209/18/90 FUTURE DOMAIN CORP. (C) 1986-1990 V7.009/18/90 FUTURE DOMAIN CORP. (C) 1992 V8.00.004/02/92 (The cards which do *NOT* work are all 8-bit cards -- although some of them have a 16-bit form-factor, the upper 8-bits are used only for IRQs and are *NOT* used for data. You can tell the difference by following the tracings on the circuit board -- if only the IRQ lines are involved, you have a "8-bit" card, and should *NOT* use this driver.) */ struct signature { const char *signature; int sig_offset; int sig_length; int major_bios_version; int minor_bios_version; int flag; /* 1 == PCI_bus, 2 == ISA_200S, 3 == ISA_250MG, 4 == ISA_200S */ } signatures[] = { /* 1 2 3 4 5 6 */ /* 123456789012345678901234567890123456789012345678901234567890 */ { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 5, 50, 2, 0, 0 }, { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V1.07/28/89", 5, 50, 2, 0, 0 }, { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 72, 50, 2, 0, 2 }, { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.0", 73, 43, 2, 0, 3 }, { "FUTURE DOMAIN CORP. (C) 1991 1800-V2.0.", 72, 39, 2, 0, 4 }, { "FUTURE DOMAIN CORP. (C) 1992 V3.00.004/02/92", 5, 44, 3, 0, 0 }, { "FUTURE DOMAIN TMC-18XX (C) 1993 V3.203/12/93", 5, 44, 3, 2, 0 }, { "IBM F1 P2 BIOS v1.0104/29/93", 5, 28, 3, -1, 0 }, { "Future Domain Corp. V1.0008/18/93", 5, 33, 3, 4, 0 }, { "Future Domain Corp. V1.0008/18/93", 26, 33, 3, 4, 1 }, { "Adaptec AHA-2920 PCI-SCSI Card", 42, 31, 3, -1, 1 }, { "IBM F1 P264/32", 5, 14, 3, -1, 1 }, /* This next signature may not be a 3.5 bios */ { "Future Domain Corp. V2.0108/18/93", 5, 33, 3, 5, 0 }, { "FUTURE DOMAIN CORP. V3.5008/18/93", 5, 34, 3, 5, 0 }, { "FUTURE DOMAIN 18c30/18c50/1800 (C) 1994 V3.5", 5, 44, 3, 5, 0 }, { "FUTURE DOMAIN CORP. V3.6008/18/93", 5, 34, 3, 6, 0 }, { "FUTURE DOMAIN CORP. V3.6108/18/93", 5, 34, 3, 6, 0 }, { "FUTURE DOMAIN TMC-18XX", 5, 22, -1, -1, 0 }, /* READ NOTICE ABOVE *BEFORE* YOU WASTE YOUR TIME ADDING A SIGNATURE Also, fix the disk geometry code for your signature and send your changes for faith@cs.unc.edu. Above all, do *NOT* change any old signatures! Note that the last line will match a "generic" 18XX bios. Because Future Domain has changed the host SCSI ID and/or the location of the geometry information in the on-board RAM area for each of the first three BIOS's, it is still important to enter a fully qualified signature in the table for any new BIOS's (after the host SCSI ID and geometry location are verified). */ }; #define SIGNATURE_COUNT (sizeof( signatures ) / sizeof( struct signature )) static void print_banner( struct Scsi_Host *shpnt ) { if (!shpnt) return; /* This won't ever happen */ if (bios_major < 0 && bios_minor < 0) { printk( "scsi%d: <fdomain> No BIOS; using scsi id %d\n", shpnt->host_no, shpnt->this_id ); } else { printk( "scsi%d: <fdomain> BIOS version ", shpnt->host_no ); if (bios_major >= 0) printk( "%d.", bios_major ); else printk( "?." ); if (bios_minor >= 0) printk( "%d", bios_minor ); else printk( "?." ); printk( " at 0x%lx using scsi id %d\n", bios_base, shpnt->this_id ); } /* If this driver works for later FD PCI boards, we will have to modify banner for additional PCI cards, but for now if it's PCI it's a TMC-3260 - JTM */ printk( "scsi%d: <fdomain> %s chip at 0x%x irq ", shpnt->host_no, chip == tmc1800 ? "TMC-1800" : (chip == tmc18c50 ? "TMC-18C50" : (chip == tmc18c30 ? (PCI_bus ? "TMC-36C70 (PCI bus)" : "TMC-18C30") : "Unknown")), port_base ); if (interrupt_level) printk( "%d", interrupt_level ); else printk( "<none>" ); printk( "\n" ); } static int __init fdomain_setup( char *str ) { int ints[4]; (void)get_options(str, ARRAY_SIZE(ints), ints); if (setup_called++ || ints[0] < 2 || ints[0] > 3) { printk( "scsi: <fdomain>" " Usage: fdomain=<PORT_BASE>,<IRQ>[,<ADAPTER_ID>]\n" ); printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" ); return 0; } port_base = ints[0] >= 1 ? ints[1] : 0; interrupt_level = ints[0] >= 2 ? ints[2] : 0; this_id = ints[0] >= 3 ? ints[3] : 0; bios_major = bios_minor = -1; /* Use geometry for BIOS version >= 3.4 */ ++setup_called; return 1; } __setup("fdomain=", fdomain_setup); static void do_pause( unsigned amount ) /* Pause for amount*10 milliseconds */ { mdelay(10*amount); } inline static void fdomain_make_bus_idle( void ) { outb( 0, SCSI_Cntl_port ); outb( 0, SCSI_Mode_Cntl_port ); if (chip == tmc18c50 || chip == tmc18c30) outb( 0x21 | PARITY_MASK, TMC_Cntl_port ); /* Clear forced intr. */ else outb( 0x01 | PARITY_MASK, TMC_Cntl_port ); } static int fdomain_is_valid_port( int port ) { #if DEBUG_DETECT printk( " (%x%x),", inb( port + MSB_ID_Code ), inb( port + LSB_ID_Code ) ); #endif /* The MCA ID is a unique id for each MCA compatible board. We are using ISA boards, but Future Domain provides the MCA ID anyway. We can use this ID to ensure that this is a Future Domain TMC-1660/TMC-1680. */ if (inb( port + LSB_ID_Code ) != 0xe9) { /* test for 0x6127 id */ if (inb( port + LSB_ID_Code ) != 0x27) return 0; if (inb( port + MSB_ID_Code ) != 0x61) return 0; chip = tmc1800; } else { /* test for 0xe960 id */ if (inb( port + MSB_ID_Code ) != 0x60) return 0; chip = tmc18c50; /* Try to toggle 32-bit mode. This only works on an 18c30 chip. (User reports say this works, so we should switch to it in the near future.) */ outb( 0x80, port + IO_Control ); if ((inb( port + Configuration2 ) & 0x80) == 0x80) { outb( 0x00, port + IO_Control ); if ((inb( port + Configuration2 ) & 0x80) == 0x00) { chip = tmc18c30; FIFO_Size = 0x800; /* 2k FIFO */ } } /* If that failed, we are an 18c50. */ } return 1; } static int fdomain_test_loopback( void ) { int i; int result; for (i = 0; i < 255; i++) { outb( i, port_base + Write_Loopback ); result = inb( port_base + Read_Loopback ); if (i != result) return 1; } return 0; } /* fdomain_get_irq assumes that we have a valid MCA ID for a TMC-1660/TMC-1680 Future Domain board. Now, check to be sure the bios_base matches these ports. If someone was unlucky enough to have purchased more than one Future Domain board, then they will have to modify this code, as we only detect one board here. [The one with the lowest bios_base.] Note that this routine is only used for systems without a PCI BIOS32 (e.g., ISA bus). For PCI bus systems, this routine will likely fail unless one of the IRQs listed in the ints array is used by the board. Sometimes it is possible to use the computer's BIOS setup screen to configure a PCI system so that one of these IRQs will be used by the Future Domain card. */ static int fdomain_get_irq( int base ) { int options = inb( base + Configuration1 ); #if DEBUG_DETECT printk( "scsi: <fdomain> Options = %x\n", options ); #endif /* Check for board with lowest bios_base -- this isn't valid for the 18c30 or for boards on the PCI bus, so just assume we have the right board. */ if (chip != tmc18c30 && !PCI_bus && addresses[ (options & 0xc0) >> 6 ] != bios_base) return 0; return ints[ (options & 0x0e) >> 1 ]; } static int fdomain_isa_detect( int *irq, int *iobase ) { int i, j; int base = 0xdeadbeef; int flag = 0; #if DEBUG_DETECT printk( "scsi: <fdomain> fdomain_isa_detect:" ); #endif for (i = 0; !bios_base && i < ADDRESS_COUNT; i++) { #if DEBUG_DETECT printk( " %lx(%lx),", addresses[i], bios_base ); #endif for (j = 0; !bios_base && j < SIGNATURE_COUNT; j++) { if (isa_check_signature(addresses[i] + signatures[j].sig_offset, signatures[j].signature, signatures[j].sig_length )) { bios_major = signatures[j].major_bios_version; bios_minor = signatures[j].minor_bios_version; PCI_bus = (signatures[j].flag == 1); Quantum = (signatures[j].flag > 1) ? signatures[j].flag : 0; bios_base = addresses[i]; } } } if (bios_major == 2) { /* The TMC-1660/TMC-1680 has a RAM area just after the BIOS ROM. Assuming the ROM is enabled (otherwise we wouldn't have been able to read the ROM signature :-), then the ROM sets up the RAM area with some magic numbers, such as a list of port base addresses and a list of the disk "geometry" reported to DOS (this geometry has nothing to do with physical geometry). */ switch (Quantum) { case 2: /* ISA_200S */ case 3: /* ISA_250MG */ base = readb(bios_base + 0x1fa2) + (readb(bios_base + 0x1fa3) << 8); break; case 4: /* ISA_200S (another one) */ base = readb(bios_base + 0x1fa3) + (readb(bios_base + 0x1fa4) << 8); break; default: base = readb(bios_base + 0x1fcc) + (readb(bios_base + 0x1fcd) << 8); break; } #if DEBUG_DETECT printk( " %x,", base ); #endif for (flag = 0, i = 0; !flag && i < PORT_COUNT; i++) { if (base == ports[i]) ++flag; } if (flag && fdomain_is_valid_port( base )) { *irq = fdomain_get_irq( base ); *iobase = base; return 1; } /* This is a bad sign. It usually means that someone patched the BIOS signature list (the signatures variable) to contain a BIOS signature for a board *OTHER THAN* the TMC-1660/TMC-1680. */ #if DEBUG_DETECT printk( " RAM FAILED, " ); #endif } /* Anyway, the alternative to finding the address in the RAM is to just search through every possible port address for one that is attached to the Future Domain card. Don't panic, though, about reading all these random port addresses -- there are rumors that the Future Domain BIOS does something very similar. Do not, however, check ports which the kernel knows are being used by another driver. */ for (i = 0; i < PORT_COUNT; i++) { base = ports[i]; if (check_region( base, 0x10 )) { #if DEBUG_DETECT printk( " (%x inuse),", base ); #endif continue; } #if DEBUG_DETECT printk( " %x,", base ); #endif if ((flag = fdomain_is_valid_port( base ))) break; } #if DEBUG_DETECT if (flag) printk( " SUCCESS\n" ); else printk( " FAILURE\n" ); #endif if (!flag) return 0; /* iobase not found */ *irq = fdomain_get_irq( base ); *iobase = base; return 1; /* success */ } /* PCI detection function: int fdomain_pci_bios_detect(int* irq, int* iobase) This function gets the Interrupt Level and I/O base address from the PCI configuration registers. */ #ifdef CONFIG_PCI static int fdomain_pci_bios_detect( int *irq, int *iobase, struct pci_dev **ret_pdev ) { unsigned int pci_irq; /* PCI interrupt line */ unsigned long pci_base; /* PCI I/O base address */ struct pci_dev *pdev = NULL; if (!pci_present()) return 0; #if DEBUG_DETECT /* Tell how to print a list of the known PCI devices from bios32 and list vendor and device IDs being used if in debug mode. */ printk( "scsi: <fdomain> INFO: use lspci -v to see list of PCI devices\n" ); printk( "scsi: <fdomain> TMC-3260 detect:" " Using Vendor ID: 0x%x and Device ID: 0x%x\n", PCI_VENDOR_ID_FD, PCI_DEVICE_ID_FD_36C70 ); #endif if ((pdev = pci_find_device(PCI_VENDOR_ID_FD, PCI_DEVICE_ID_FD_36C70, pdev)) == NULL) return 0; if (pci_enable_device(pdev)) return 0; #if DEBUG_DETECT printk( "scsi: <fdomain> TMC-3260 detect:" " PCI bus %u, device %u, function %u\n", pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); #endif /* We now have the appropriate device function for the FD board so we just read the PCI config info from the registers. */ pci_base = pci_resource_start(pdev, 0); pci_irq = pdev->irq; /* Now we have the I/O base address and interrupt from the PCI configuration registers. */ *irq = pci_irq; *iobase = pci_base; *ret_pdev = pdev; #if DEBUG_DETECT printk( "scsi: <fdomain> TMC-3260 detect:" " IRQ = %d, I/O base = 0x%x [0x%lx]\n", *irq, *iobase, pci_base ); #endif if (!fdomain_is_valid_port( *iobase )) { printk( "scsi: <fdomain>" " PCI card detected, but driver not loaded (invalid port)\n" ); return 0; } /* Fill in a few global variables. Ugh. */ bios_major = bios_minor = -1; PCI_bus = 1; Quantum = 0; bios_base = 0; return 1; } #endif int fdomain_16x0_detect( Scsi_Host_Template *tpnt ) { int retcode; struct Scsi_Host *shpnt; struct pci_dev *pdev = NULL; #if DO_DETECT int i = 0; int j = 0; const int buflen = 255; Scsi_Cmnd SCinit; unsigned char do_inquiry[] = { INQUIRY, 0, 0, 0, buflen, 0 }; unsigned char do_request_sense[] = { REQUEST_SENSE, 0, 0, 0, buflen, 0 }; unsigned char do_read_capacity[] = { READ_CAPACITY, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; unsigned char buf[buflen]; #endif tpnt->proc_name = "fdomain"; #ifdef MODULE if (fdomain) fdomain_setup(fdomain); #endif if (setup_called) { #if DEBUG_DETECT printk( "scsi: <fdomain> No BIOS, using port_base = 0x%x, irq = %d\n", port_base, interrupt_level ); #endif if (!fdomain_is_valid_port( port_base )) { printk( "scsi: <fdomain> Cannot locate chip at port base 0x%x\n", port_base ); printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" ); return 0; } } else { int flag = 0; #ifdef CONFIG_PCI /* Try PCI detection first */ flag = fdomain_pci_bios_detect( &interrupt_level, &port_base, &pdev ); #endif if (!flag) { /* Then try ISA bus detection */ flag = fdomain_isa_detect( &interrupt_level, &port_base ); if (!flag) { printk( "scsi: <fdomain> Detection failed (no card)\n" ); return 0; } } } SCSI_Mode_Cntl_port = port_base + SCSI_Mode_Cntl; FIFO_Data_Count_port = port_base + FIFO_Data_Count; Interrupt_Cntl_port = port_base + Interrupt_Cntl; Interrupt_Status_port = port_base + Interrupt_Status; Read_FIFO_port = port_base + Read_FIFO; Read_SCSI_Data_port = port_base + Read_SCSI_Data; SCSI_Cntl_port = port_base + SCSI_Cntl; SCSI_Data_NoACK_port = port_base + SCSI_Data_NoACK; SCSI_Status_port = port_base + SCSI_Status; TMC_Cntl_port = port_base + TMC_Cntl; TMC_Status_port = port_base + TMC_Status; Write_FIFO_port = port_base + Write_FIFO; Write_SCSI_Data_port = port_base + Write_SCSI_Data; fdomain_16x0_reset( NULL, 0 ); if (fdomain_test_loopback()) { printk( "scsi: <fdomain> Detection failed" " (loopback test failed at port base 0x%x)\n", port_base ); if (setup_called) { printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" ); } return 0; } if (this_id) { tpnt->this_id = (this_id & 0x07); adapter_mask = (1 << tpnt->this_id); } else { if (PCI_bus || (bios_major == 3 && bios_minor >= 2) || bios_major < 0) { tpnt->this_id = 7; adapter_mask = 0x80; } else { tpnt->this_id = 6; adapter_mask = 0x40; } } /* Print out a banner here in case we can't get resources. */ shpnt = scsi_register( tpnt, 0 ); if(shpnt == NULL) return 0; shpnt->irq = interrupt_level; shpnt->io_port = port_base; scsi_set_pci_device(shpnt, pdev); shpnt->n_io_port = 0x10; print_banner( shpnt ); /* Log IRQ with kernel */ if (!interrupt_level) { printk( "scsi: <fdomain>" " Card Detected, but driver not loaded (no IRQ)\n" ); return 0; } else { /* Register the IRQ with the kernel */ retcode = request_irq( interrupt_level, do_fdomain_16x0_intr, pdev?SA_SHIRQ:0, "fdomain", NULL); if (retcode < 0) { if (retcode == -EINVAL) { printk( "scsi: <fdomain> IRQ %d is bad!\n", interrupt_level ); printk( " This shouldn't happen!\n" ); printk( " Send mail to faith@acm.org\n" ); } else if (retcode == -EBUSY) { printk( "scsi: <fdomain> IRQ %d is already in use!\n", interrupt_level ); printk( " Please use another IRQ!\n" ); } else { printk( "scsi: <fdomain> Error getting IRQ %d\n", interrupt_level ); printk( " This shouldn't happen!\n" ); printk( " Send mail to faith@acm.org\n" ); } printk( "scsi: <fdomain> Detected, but driver not loaded (IRQ)\n" ); return 0; } } /* Log I/O ports with kernel */ request_region( port_base, 0x10, "fdomain" ); #if DO_DETECT /* These routines are here because of the way the SCSI bus behaves after a reset. This appropriate behavior was not handled correctly by the higher level SCSI routines when I first wrote this driver. Now, however, correct scan routines are part of scsi.c and these routines are no longer needed. However, this code is still good for debugging. */ SCinit.request_buffer = SCinit.buffer = buf; SCinit.request_bufflen = SCinit.bufflen = sizeof(buf)-1; SCinit.use_sg = 0; SCinit.lun = 0; printk( "scsi: <fdomain> detection routine scanning for devices:\n" ); for (i = 0; i < 8; i++) { SCinit.target = i; if (i == tpnt->this_id) /* Skip host adapter */ continue; memcpy(SCinit.cmnd, do_request_sense, sizeof(do_request_sense)); retcode = fdomain_16x0_command(&SCinit); if (!retcode) { memcpy(SCinit.cmnd, do_inquiry, sizeof(do_inquiry)); retcode = fdomain_16x0_command(&SCinit); if (!retcode) { printk( " SCSI ID %d: ", i ); for (j = 8; j < (buf[4] < 32 ? buf[4] : 32); j++) printk( "%c", buf[j] >= 20 ? buf[j] : ' ' ); memcpy(SCinit.cmnd, do_read_capacity, sizeof(do_read_capacity)); retcode = fdomain_16x0_command(&SCinit); if (!retcode) { unsigned long blocks, size, capacity; blocks = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3]; size = (buf[4] << 24) | (buf[5] << 16) | (buf[6] << 8) | buf[7]; capacity = +( +(blocks / 1024L) * +(size * 10L)) / 1024L; printk( "%lu MB (%lu byte blocks)", ((capacity + 5L) / 10L), size ); } else { memcpy(SCinit.cmnd, do_request_sense, sizeof(do_request_sense)); retcode = fdomain_16x0_command(&SCinit); } printk ("\n" ); } else { memcpy(SCinit.cmnd, do_request_sense, sizeof(do_request_sense)); retcode = fdomain_16x0_command(&SCinit); } } } #endif return 1; /* Maximum of one adapter will be detected. */ } const char *fdomain_16x0_info( struct Scsi_Host *ignore ) { static char buffer[128]; char *pt; strcpy( buffer, "Future Domain 16-bit SCSI Driver Version" ); if (strchr( VERSION, ':')) { /* Assume VERSION is an RCS Revision string */ strcat( buffer, strchr( VERSION, ':' ) + 1 ); pt = strrchr( buffer, '$') - 1; if (!pt) /* Stripped RCS Revision string? */ pt = buffer + strlen( buffer ) - 1; if (*pt != ' ') ++pt; *pt = '\0'; } else { /* Assume VERSION is a number */ strcat( buffer, " " VERSION ); } return buffer; } /* First pass at /proc information routine. */ /* * inout : decides on the direction of the dataflow and the meaning of the * variables * buffer: If inout==FALSE data is being written to it else read from it * *start: If inout==FALSE start of the valid data in the buffer * offset: If inout==FALSE offset from the beginning of the imaginary file * from which we start writing into the buffer * length: If inout==FALSE max number of bytes to be written into the buffer * else number of bytes in the buffer */ int fdomain_16x0_proc_info( char *buffer, char **start, off_t offset, int length, int hostno, int inout ) { const char *info = fdomain_16x0_info( NULL ); int len; int pos; int begin; if (inout) return(-ENOSYS); begin = 0; strcpy( buffer, info ); strcat( buffer, "\n" ); pos = len = strlen( buffer ); if(pos < offset) { len = 0; begin = pos; } *start = buffer + (offset - begin); /* Start of wanted data */ len -= (offset - begin); if(len > length) len = length; return(len); } #if 0 static int fdomain_arbitrate( void ) { int status = 0; unsigned long timeout; #if EVERY_ACCESS printk( "fdomain_arbitrate()\n" ); #endif outb( 0x00, SCSI_Cntl_port ); /* Disable data drivers */ outb( adapter_mask, port_base + SCSI_Data_NoACK ); /* Set our id bit */ outb( 0x04 | PARITY_MASK, TMC_Cntl_port ); /* Start arbitration */ timeout = 500; do { status = inb( TMC_Status_port ); /* Read adapter status */ if (status & 0x02) /* Arbitration complete */ return 0; mdelay(1); /* Wait one millisecond */ } while (--timeout); /* Make bus idle */ fdomain_make_bus_idle(); #if EVERY_ACCESS printk( "Arbitration failed, status = %x\n", status ); #endif #if ERRORS_ONLY printk( "scsi: <fdomain> Arbitration failed, status = %x\n", status ); #endif return 1; } #endif static int fdomain_select( int target ) { int status; unsigned long timeout; static int flag = 0; outb( 0x82, SCSI_Cntl_port ); /* Bus Enable + Select */ outb( adapter_mask | (1 << target), SCSI_Data_NoACK_port ); /* Stop arbitration and enable parity */ outb( PARITY_MASK, TMC_Cntl_port ); timeout = 350; /* 350 msec */ do { status = inb( SCSI_Status_port ); /* Read adapter status */ if (status & 1) { /* Busy asserted */ /* Enable SCSI Bus (on error, should make bus idle with 0) */ outb( 0x80, SCSI_Cntl_port ); return 0; } mdelay(1); /* wait one msec */ } while (--timeout); /* Make bus idle */ fdomain_make_bus_idle(); #if EVERY_ACCESS if (!target) printk( "Selection failed\n" ); #endif #if ERRORS_ONLY if (!target) { if (!flag) /* Skip first failure for all chips. */ ++flag; else printk( "scsi: <fdomain> Selection failed\n" ); } #endif return 1; } void my_done( int error ) { if (in_command) { in_command = 0; outb( 0x00, Interrupt_Cntl_port ); fdomain_make_bus_idle(); current_SC->result = error; if (current_SC->scsi_done) current_SC->scsi_done( current_SC ); else panic( "scsi: <fdomain> current_SC->scsi_done() == NULL" ); } else { panic( "scsi: <fdomain> my_done() called outside of command\n" ); } #if DEBUG_RACE in_interrupt_flag = 0; #endif } void do_fdomain_16x0_intr( int irq, void *dev_id, struct pt_regs * regs ) { unsigned long flags; int status; int done = 0; unsigned data_count; /* The fdomain_16x0_intr is only called via the interrupt handler. The goal of the sti() here is to allow other interruptions while this routine is running. */ /* Check for other IRQ sources */ if((inb(TMC_Status_port)&0x01)==0) return; /* It is our IRQ */ outb( 0x00, Interrupt_Cntl_port ); /* We usually have one spurious interrupt after each command. Ignore it. */ if (!in_command || !current_SC) { /* Spurious interrupt */ #if EVERY_ACCESS printk( "Spurious interrupt, in_command = %d, current_SC = %x\n", in_command, current_SC ); #endif return; } /* Abort calls my_done, so we do nothing here. */ if (current_SC->SCp.phase & aborted) { #if DEBUG_ABORT printk( "scsi: <fdomain> Interrupt after abort, ignoring\n" ); #endif /* return; */ } #if DEBUG_RACE ++in_interrupt_flag; #endif if (current_SC->SCp.phase & in_arbitration) { status = inb( TMC_Status_port ); /* Read adapter status */ if (!(status & 0x02)) { #if EVERY_ACCESS printk( " AFAIL " ); #endif spin_lock_irqsave(&io_request_lock, flags); my_done( DID_BUS_BUSY << 16 ); spin_unlock_irqrestore(&io_request_lock, flags); return; } current_SC->SCp.phase = in_selection; outb( 0x40 | FIFO_COUNT, Interrupt_Cntl_port ); outb( 0x82, SCSI_Cntl_port ); /* Bus Enable + Select */ outb( adapter_mask | (1 << current_SC->target), SCSI_Data_NoACK_port ); /* Stop arbitration and enable parity */ outb( 0x10 | PARITY_MASK, TMC_Cntl_port ); #if DEBUG_RACE in_interrupt_flag = 0; #endif return; } else if (current_SC->SCp.phase & in_selection) { status = inb( SCSI_Status_port ); if (!(status & 0x01)) { /* Try again, for slow devices */ if (fdomain_select( current_SC->target )) { #if EVERY_ACCESS printk( " SFAIL " ); #endif spin_lock_irqsave(&io_request_lock, flags); my_done( DID_NO_CONNECT << 16 ); spin_unlock_irqrestore(&io_request_lock, flags); return; } else { #if EVERY_ACCESS printk( " AltSel " ); #endif /* Stop arbitration and enable parity */ outb( 0x10 | PARITY_MASK, TMC_Cntl_port ); } } current_SC->SCp.phase = in_other; outb( 0x90 | FIFO_COUNT, Interrupt_Cntl_port ); outb( 0x80, SCSI_Cntl_port ); #if DEBUG_RACE in_interrupt_flag = 0; #endif return; } /* current_SC->SCp.phase == in_other: this is the body of the routine */ status = inb( SCSI_Status_port ); if (status & 0x10) { /* REQ */ switch (status & 0x0e) { case 0x08: /* COMMAND OUT */ outb( current_SC->cmnd[current_SC->SCp.sent_command++], Write_SCSI_Data_port ); #if EVERY_ACCESS printk( "CMD = %x,", current_SC->cmnd[ current_SC->SCp.sent_command - 1] ); #endif break; case 0x00: /* DATA OUT -- tmc18c50/tmc18c30 only */ if (chip != tmc1800 && !current_SC->SCp.have_data_in) { current_SC->SCp.have_data_in = -1; outb( 0xd0 | PARITY_MASK, TMC_Cntl_port ); } break; case 0x04: /* DATA IN -- tmc18c50/tmc18c30 only */ if (chip != tmc1800 && !current_SC->SCp.have_data_in) { current_SC->SCp.have_data_in = 1; outb( 0x90 | PARITY_MASK, TMC_Cntl_port ); } break; case 0x0c: /* STATUS IN */ current_SC->SCp.Status = inb( Read_SCSI_Data_port ); #if EVERY_ACCESS printk( "Status = %x, ", current_SC->SCp.Status ); #endif #if ERRORS_ONLY if (current_SC->SCp.Status && current_SC->SCp.Status != 2 && current_SC->SCp.Status != 8) { printk( "scsi: <fdomain> target = %d, command = %x, status = %x\n", current_SC->target, current_SC->cmnd[0], current_SC->SCp.Status ); } #endif break; case 0x0a: /* MESSAGE OUT */ outb( MESSAGE_REJECT, Write_SCSI_Data_port ); /* Reject */ break; case 0x0e: /* MESSAGE IN */ current_SC->SCp.Message = inb( Read_SCSI_Data_port ); #if EVERY_ACCESS printk( "Message = %x, ", current_SC->SCp.Message ); #endif if (!current_SC->SCp.Message) ++done; #if DEBUG_MESSAGES || EVERY_ACCESS if (current_SC->SCp.Message) { printk( "scsi: <fdomain> message = %x\n", current_SC->SCp.Message ); } #endif break; } } if (chip == tmc1800 && !current_SC->SCp.have_data_in && (current_SC->SCp.sent_command >= current_SC->cmd_len)) { /* We have to get the FIFO direction correct, so I've made a table based on the SCSI Standard of which commands appear to require a DATA OUT phase. */ /* p. 94: Command for all device types CHANGE DEFINITION 40 DATA OUT COMPARE 39 DATA OUT COPY 18 DATA OUT COPY AND VERIFY 3a DATA OUT INQUIRY 12 LOG SELECT 4c DATA OUT LOG SENSE 4d MODE SELECT (6) 15 DATA OUT MODE SELECT (10) 55 DATA OUT MODE SENSE (6) 1a MODE SENSE (10) 5a READ BUFFER 3c RECEIVE DIAGNOSTIC RESULTS 1c REQUEST SENSE 03 SEND DIAGNOSTIC 1d DATA OUT TEST UNIT READY 00 WRITE BUFFER 3b DATA OUT p.178: Commands for direct-access devices (not listed on p. 94) FORMAT UNIT 04 DATA OUT LOCK-UNLOCK CACHE 36 PRE-FETCH 34 PREVENT-ALLOW MEDIUM REMOVAL 1e READ (6)/RECEIVE 08 READ (10) 3c READ CAPACITY 25 READ DEFECT DATA (10) 37 READ LONG 3e REASSIGN BLOCKS 07 DATA OUT RELEASE 17 RESERVE 16 DATA OUT REZERO UNIT/REWIND 01 SEARCH DATA EQUAL (10) 31 DATA OUT SEARCH DATA HIGH (10) 30 DATA OUT SEARCH DATA LOW (10) 32 DATA OUT SEEK (6) 0b SEEK (10) 2b SET LIMITS (10) 33 START STOP UNIT 1b SYNCHRONIZE CACHE 35 VERIFY (10) 2f WRITE (6)/PRINT/SEND 0a DATA OUT WRITE (10)/SEND 2a DATA OUT WRITE AND VERIFY (10) 2e DATA OUT WRITE LONG 3f DATA OUT WRITE SAME 41 DATA OUT ? p. 261: Commands for sequential-access devices (not previously listed) ERASE 19 LOAD UNLOAD 1b LOCATE 2b READ BLOCK LIMITS 05 READ POSITION 34 READ REVERSE 0f RECOVER BUFFERED DATA 14 SPACE 11 WRITE FILEMARKS 10 ? p. 298: Commands for printer devices (not previously listed) ****** NOT SUPPORTED BY THIS DRIVER, since 0b is SEEK (6) ***** SLEW AND PRINT 0b DATA OUT -- same as seek STOP PRINT 1b SYNCHRONIZE BUFFER 10 p. 315: Commands for processor devices (not previously listed) p. 321: Commands for write-once devices (not previously listed) MEDIUM SCAN 38 READ (12) a8 SEARCH DATA EQUAL (12) b1 DATA OUT SEARCH DATA HIGH (12) b0 DATA OUT SEARCH DATA LOW (12) b2 DATA OUT SET LIMITS (12) b3 VERIFY (12) af WRITE (12) aa DATA OUT WRITE AND VERIFY (12) ae DATA OUT p. 332: Commands for CD-ROM devices (not previously listed) PAUSE/RESUME 4b PLAY AUDIO (10) 45 PLAY AUDIO (12) a5 PLAY AUDIO MSF 47 PLAY TRACK RELATIVE (10) 49 PLAY TRACK RELATIVE (12) a9 READ HEADER 44 READ SUB-CHANNEL 42 READ TOC 43 p. 370: Commands for scanner devices (not previously listed) GET DATA BUFFER STATUS 34 GET WINDOW 25 OBJECT POSITION 31 SCAN 1b SET WINDOW 24 DATA OUT p. 391: Commands for optical memory devices (not listed) ERASE (10) 2c ERASE (12) ac MEDIUM SCAN 38 DATA OUT READ DEFECT DATA (12) b7 READ GENERATION 29 READ UPDATED BLOCK 2d UPDATE BLOCK 3d DATA OUT p. 419: Commands for medium changer devices (not listed) EXCHANGE MEDIUM 46 INITIALIZE ELEMENT STATUS 07 MOVE MEDIUM a5 POSITION TO ELEMENT 2b READ ELEMENT STATUS b8 REQUEST VOL. ELEMENT ADDRESS b5 SEND VOLUME TAG b6 DATA OUT p. 454: Commands for communications devices (not listed previously) GET MESSAGE (6) 08 GET MESSAGE (10) 28 GET MESSAGE (12) a8 */ switch (current_SC->cmnd[0]) { case CHANGE_DEFINITION: case COMPARE: case COPY: case COPY_VERIFY: case LOG_SELECT: case MODE_SELECT: case MODE_SELECT_10: case SEND_DIAGNOSTIC: case WRITE_BUFFER: case FORMAT_UNIT: case REASSIGN_BLOCKS: case RESERVE: case SEARCH_EQUAL: case SEARCH_HIGH: case SEARCH_LOW: case WRITE_6: case WRITE_10: case WRITE_VERIFY: case 0x3f: case 0x41: case 0xb1: case 0xb0: case 0xb2: case 0xaa: case 0xae: case 0x24: case 0x38: case 0x3d: case 0xb6: case 0xea: /* alternate number for WRITE LONG */ current_SC->SCp.have_data_in = -1; outb( 0xd0 | PARITY_MASK, TMC_Cntl_port ); break; case 0x00: default: current_SC->SCp.have_data_in = 1; outb( 0x90 | PARITY_MASK, TMC_Cntl_port ); break; } } if (current_SC->SCp.have_data_in == -1) { /* DATA OUT */ while ( (data_count = FIFO_Size - inw( FIFO_Data_Count_port )) > 512 ) { #if EVERY_ACCESS printk( "DC=%d, ", data_count ) ; #endif if (data_count > current_SC->SCp.this_residual) data_count = current_SC->SCp.this_residual; if (data_count > 0) { #if EVERY_ACCESS printk( "%d OUT, ", data_count ); #endif if (data_count == 1) { outb( *current_SC->SCp.ptr++, Write_FIFO_port ); --current_SC->SCp.this_residual; } else { data_count >>= 1; outsw( Write_FIFO_port, current_SC->SCp.ptr, data_count ); current_SC->SCp.ptr += 2 * data_count; current_SC->SCp.this_residual -= 2 * data_count; } } if (!current_SC->SCp.this_residual) { if (current_SC->SCp.buffers_residual) { --current_SC->SCp.buffers_residual; ++current_SC->SCp.buffer; current_SC->SCp.ptr = current_SC->SCp.buffer->address; current_SC->SCp.this_residual = current_SC->SCp.buffer->length; } else break; } } } if (current_SC->SCp.have_data_in == 1) { /* DATA IN */ while ((data_count = inw( FIFO_Data_Count_port )) > 0) { #if EVERY_ACCESS printk( "DC=%d, ", data_count ); #endif if (data_count > current_SC->SCp.this_residual) data_count = current_SC->SCp.this_residual; if (data_count) { #if EVERY_ACCESS printk( "%d IN, ", data_count ); #endif if (data_count == 1) { *current_SC->SCp.ptr++ = inb( Read_FIFO_port ); --current_SC->SCp.this_residual; } else { data_count >>= 1; /* Number of words */ insw( Read_FIFO_port, current_SC->SCp.ptr, data_count ); current_SC->SCp.ptr += 2 * data_count; current_SC->SCp.this_residual -= 2 * data_count; } } if (!current_SC->SCp.this_residual && current_SC->SCp.buffers_residual) { --current_SC->SCp.buffers_residual; ++current_SC->SCp.buffer; current_SC->SCp.ptr = current_SC->SCp.buffer->address; current_SC->SCp.this_residual = current_SC->SCp.buffer->length; } } } if (done) { #if EVERY_ACCESS printk( " ** IN DONE %d ** ", current_SC->SCp.have_data_in ); #endif #if ERRORS_ONLY if (current_SC->cmnd[0] == REQUEST_SENSE && !current_SC->SCp.Status) { if ((unsigned char)(*((char *)current_SC->request_buffer+2)) & 0x0f) { unsigned char key; unsigned char code; unsigned char qualifier; key = (unsigned char)(*((char *)current_SC->request_buffer + 2)) & 0x0f; code = (unsigned char)(*((char *)current_SC->request_buffer + 12)); qualifier = (unsigned char)(*((char *)current_SC->request_buffer + 13)); if (key != UNIT_ATTENTION && !(key == NOT_READY && code == 0x04 && (!qualifier || qualifier == 0x02 || qualifier == 0x01)) && !(key == ILLEGAL_REQUEST && (code == 0x25 || code == 0x24 || !code))) printk( "scsi: <fdomain> REQUEST SENSE" " Key = %x, Code = %x, Qualifier = %x\n", key, code, qualifier ); } } #endif #if EVERY_ACCESS printk( "BEFORE MY_DONE. . ." ); #endif spin_lock_irqsave(&io_request_lock, flags); my_done( (current_SC->SCp.Status & 0xff) | ((current_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16) ); spin_unlock_irqrestore(&io_request_lock, flags); #if EVERY_ACCESS printk( "RETURNING.\n" ); #endif } else { if (current_SC->SCp.phase & disconnect) { outb( 0xd0 | FIFO_COUNT, Interrupt_Cntl_port ); outb( 0x00, SCSI_Cntl_port ); } else { outb( 0x90 | FIFO_COUNT, Interrupt_Cntl_port ); } } #if DEBUG_RACE in_interrupt_flag = 0; #endif return; } int fdomain_16x0_queue( Scsi_Cmnd * SCpnt, void (*done)(Scsi_Cmnd *)) { if (in_command) { panic( "scsi: <fdomain> fdomain_16x0_queue() NOT REENTRANT!\n" ); } #if EVERY_ACCESS printk( "queue: target = %d cmnd = 0x%02x pieces = %d size = %u\n", SCpnt->target, *(unsigned char *)SCpnt->cmnd, SCpnt->use_sg, SCpnt->request_bufflen ); #endif fdomain_make_bus_idle(); current_SC = SCpnt; /* Save this for the done function */ current_SC->scsi_done = done; /* Initialize static data */ if (current_SC->use_sg) { current_SC->SCp.buffer = (struct scatterlist *)current_SC->request_buffer; current_SC->SCp.ptr = current_SC->SCp.buffer->address; current_SC->SCp.this_residual = current_SC->SCp.buffer->length; current_SC->SCp.buffers_residual = current_SC->use_sg - 1; } else { current_SC->SCp.ptr = (char *)current_SC->request_buffer; current_SC->SCp.this_residual = current_SC->request_bufflen; current_SC->SCp.buffer = NULL; current_SC->SCp.buffers_residual = 0; } current_SC->SCp.Status = 0; current_SC->SCp.Message = 0; current_SC->SCp.have_data_in = 0; current_SC->SCp.sent_command = 0; current_SC->SCp.phase = in_arbitration; /* Start arbitration */ outb( 0x00, Interrupt_Cntl_port ); outb( 0x00, SCSI_Cntl_port ); /* Disable data drivers */ outb( adapter_mask, SCSI_Data_NoACK_port ); /* Set our id bit */ ++in_command; outb( 0x20, Interrupt_Cntl_port ); outb( 0x14 | PARITY_MASK, TMC_Cntl_port ); /* Start arbitration */ return 0; } /* The following code, which simulates the old-style command function, was taken from Tommy Thorn's aha1542.c file. This code is Copyright (C) 1992 Tommy Thorn. */ static volatile int internal_done_flag = 0; static volatile int internal_done_errcode = 0; static void internal_done( Scsi_Cmnd *SCpnt ) { internal_done_errcode = SCpnt->result; ++internal_done_flag; } int fdomain_16x0_command( Scsi_Cmnd *SCpnt ) { fdomain_16x0_queue( SCpnt, internal_done ); while (!internal_done_flag) ; internal_done_flag = 0; return internal_done_errcode; } /* End of code derived from Tommy Thorn's work. */ void print_info( Scsi_Cmnd *SCpnt ) { unsigned int imr; unsigned int irr; unsigned int isr; if (!SCpnt || !SCpnt->host) { printk( "scsi: <fdomain> Cannot provide detailed information\n" ); return; } printk( "%s\n", fdomain_16x0_info( SCpnt->host ) ); print_banner( SCpnt->host ); switch (SCpnt->SCp.phase) { case in_arbitration: printk( "arbitration " ); break; case in_selection: printk( "selection " ); break; case in_other: printk( "other " ); break; default: printk( "unknown " ); break; } printk( "(%d), target = %d cmnd = 0x%02x pieces = %d size = %u\n", SCpnt->SCp.phase, SCpnt->target, *(unsigned char *)SCpnt->cmnd, SCpnt->use_sg, SCpnt->request_bufflen ); printk( "sent_command = %d, have_data_in = %d, timeout = %d\n", SCpnt->SCp.sent_command, SCpnt->SCp.have_data_in, SCpnt->timeout ); #if DEBUG_RACE printk( "in_interrupt_flag = %d\n", in_interrupt_flag ); #endif imr = (inb( 0x0a1 ) << 8) + inb( 0x21 ); outb( 0x0a, 0xa0 ); irr = inb( 0xa0 ) << 8; outb( 0x0a, 0x20 ); irr += inb( 0x20 ); outb( 0x0b, 0xa0 ); isr = inb( 0xa0 ) << 8; outb( 0x0b, 0x20 ); isr += inb( 0x20 ); /* Print out interesting information */ printk( "IMR = 0x%04x", imr ); if (imr & (1 << interrupt_level)) printk( " (masked)" ); printk( ", IRR = 0x%04x, ISR = 0x%04x\n", irr, isr ); printk( "SCSI Status = 0x%02x\n", inb( SCSI_Status_port ) ); printk( "TMC Status = 0x%02x", inb( TMC_Status_port ) ); if (inb( TMC_Status_port & 1)) printk( " (interrupt)" ); printk( "\n" ); printk( "Interrupt Status = 0x%02x", inb( Interrupt_Status_port ) ); if (inb( Interrupt_Status_port ) & 0x08) printk( " (enabled)" ); printk( "\n" ); if (chip == tmc18c50 || chip == tmc18c30) { printk( "FIFO Status = 0x%02x\n", inb( port_base + FIFO_Status ) ); printk( "Int. Condition = 0x%02x\n", inb( port_base + Interrupt_Cond ) ); } printk( "Configuration 1 = 0x%02x\n", inb( port_base + Configuration1 ) ); if (chip == tmc18c50 || chip == tmc18c30) printk( "Configuration 2 = 0x%02x\n", inb( port_base + Configuration2 ) ); } int fdomain_16x0_abort( Scsi_Cmnd *SCpnt) { unsigned long flags; #if EVERY_ACCESS || ERRORS_ONLY || DEBUG_ABORT printk( "scsi: <fdomain> abort " ); #endif save_flags( flags ); cli(); if (!in_command) { #if EVERY_ACCESS || ERRORS_ONLY printk( " (not in command)\n" ); #endif restore_flags( flags ); return SCSI_ABORT_NOT_RUNNING; } else printk( "\n" ); #if DEBUG_ABORT print_info( SCpnt ); #endif fdomain_make_bus_idle(); current_SC->SCp.phase |= aborted; current_SC->result = DID_ABORT << 16; restore_flags( flags ); /* Aborts are not done well. . . */ my_done( DID_ABORT << 16 ); return SCSI_ABORT_SUCCESS; } int fdomain_16x0_reset( Scsi_Cmnd *SCpnt, unsigned int ignored ) { #if DEBUG_RESET static int called_once = 0; #endif #if ERRORS_ONLY if (SCpnt) printk( "scsi: <fdomain> SCSI Bus Reset\n" ); #endif #if DEBUG_RESET if (called_once) print_info( current_SC ); called_once = 1; #endif outb( 1, SCSI_Cntl_port ); do_pause( 2 ); outb( 0, SCSI_Cntl_port ); do_pause( 115 ); outb( 0, SCSI_Mode_Cntl_port ); outb( PARITY_MASK, TMC_Cntl_port ); /* Unless this is the very first call (i.e., SCPnt == NULL), everything is probably hosed at this point. We will, however, try to keep things going by informing the high-level code that we need help. */ return SCSI_RESET_WAKEUP; } #include "sd.h" #include <scsi/scsi_ioctl.h> int fdomain_16x0_biosparam( Scsi_Disk *disk, kdev_t dev, int *info_array ) { int drive; unsigned char buf[512 + sizeof (Scsi_Ioctl_Command)]; Scsi_Ioctl_Command *sic = (Scsi_Ioctl_Command *) buf; int size = disk->capacity; unsigned char *data = sic->data; unsigned char do_read[] = { READ_6, 0, 0, 0, 1, 0 }; int retcode; unsigned long offset; struct drive_info { unsigned short cylinders; unsigned char heads; unsigned char sectors; } i; /* NOTES: The RAM area starts at 0x1f00 from the bios_base address. For BIOS Version 2.0: The drive parameter table seems to start at 0x1f30. The first byte's purpose is not known. Next is the cylinder, head, and sector information. The last 4 bytes appear to be the drive's size in sectors. The other bytes in the drive parameter table are unknown. If anyone figures them out, please send me mail, and I will update these notes. Tape drives do not get placed in this table. There is another table at 0x1fea: If the byte is 0x01, then the SCSI ID is not in use. If the byte is 0x18 or 0x48, then the SCSI ID is in use, although tapes don't seem to be in this table. I haven't seen any other numbers (in a limited sample). 0x1f2d is a drive count (i.e., not including tapes) The table at 0x1fcc are I/O ports addresses for the various operations. I calculate these by hand in this driver code. For the ISA-200S version of BIOS Version 2.0: The drive parameter table starts at 0x1f33. WARNING: Assume that the table entry is 25 bytes long. Someone needs to check this for the Quantum ISA-200S card. For BIOS Version 3.2: The drive parameter table starts at 0x1f70. Each entry is 0x0a bytes long. Heads are one less than we need to report. */ if (MAJOR(dev) != SCSI_DISK0_MAJOR) { printk("scsi: <fdomain> fdomain_16x0_biosparam: too many disks"); return 0; } drive = MINOR(dev) >> 4; if (bios_major == 2) { switch (Quantum) { case 2: /* ISA_200S */ /* The value of 25 has never been verified. It should probably be 15. */ offset = bios_base + 0x1f33 + drive * 25; break; case 3: /* ISA_250MG */ offset = bios_base + 0x1f36 + drive * 15; break; case 4: /* ISA_200S (another one) */ offset = bios_base + 0x1f34 + drive * 15; break; default: offset = bios_base + 0x1f31 + drive * 25; break; } memcpy_fromio( &i, offset, sizeof( struct drive_info ) ); info_array[0] = i.heads; info_array[1] = i.sectors; info_array[2] = i.cylinders; } else if (bios_major == 3 && bios_minor >= 0 && bios_minor < 4) { /* 3.0 and 3.2 BIOS */ memcpy_fromio( &i, bios_base + 0x1f71 + drive * 10, sizeof( struct drive_info ) ); info_array[0] = i.heads + 1; info_array[1] = i.sectors; info_array[2] = i.cylinders; } else { /* 3.4 BIOS (and up?) */ /* This algorithm was provided by Future Domain (much thanks!). */ sic->inlen = 0; /* zero bytes out */ sic->outlen = 512; /* one sector in */ memcpy( data, do_read, sizeof( do_read ) ); retcode = kernel_scsi_ioctl( disk->device, SCSI_IOCTL_SEND_COMMAND, sic ); if (!retcode /* SCSI command ok */ && data[511] == 0xaa && data[510] == 0x55 /* Partition table valid */ && data[0x1c2]) { /* Partition type */ /* The partition table layout is as follows: Start: 0x1b3h Offset: 0 = partition status 1 = starting head 2 = starting sector and cylinder (word, encoded) 4 = partition type 5 = ending head 6 = ending sector and cylinder (word, encoded) 8 = starting absolute sector (double word) c = number of sectors (double word) Signature: 0x1fe = 0x55aa So, this algorithm assumes: 1) the first partition table is in use, 2) the data in the first entry is correct, and 3) partitions never divide cylinders Note that (1) may be FALSE for NetBSD (and other BSD flavors), as well as for Linux. Note also, that Linux doesn't pay any attention to the fields that are used by this algorithm -- it only uses the absolute sector data. Recent versions of Linux's fdisk(1) will fill this data in correctly, and forthcoming versions will check for consistency. Checking for a non-zero partition type is not part of the Future Domain algorithm, but it seemed to be a reasonable thing to do, especially in the Linux and BSD worlds. */ info_array[0] = data[0x1c3] + 1; /* heads */ info_array[1] = data[0x1c4] & 0x3f; /* sectors */ } else { /* Note that this new method guarantees that there will always be less than 1024 cylinders on a platter. This is good for drives up to approximately 7.85GB (where 1GB = 1024 * 1024 kB). */ if ((unsigned int)size >= 0x7e0000U) { info_array[0] = 0xff; /* heads = 255 */ info_array[1] = 0x3f; /* sectors = 63 */ } else if ((unsigned int)size >= 0x200000U) { info_array[0] = 0x80; /* heads = 128 */ info_array[1] = 0x3f; /* sectors = 63 */ } else { info_array[0] = 0x40; /* heads = 64 */ info_array[1] = 0x20; /* sectors = 32 */ } } /* For both methods, compute the cylinders */ info_array[2] = (unsigned int)size / (info_array[0] * info_array[1] ); } return 0; } MODULE_LICENSE("GPL"); /* Eventually this will go into an include file, but this will be later */ static Scsi_Host_Template driver_template = FDOMAIN_16X0; #include "scsi_module.c" |