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 | /* lasi_82596.c -- driver for the intel 82596 ethernet controller, as munged into HPPA boxen . This driver is based upon 82596.c, original credits are below... but there were too many hoops which HP wants jumped through to keep this code in there in a sane manner. 3 primary sources of the mess -- 1) hppa needs *lots* of cacheline flushing to keep this kind of MMIO running. 2) The 82596 needs to see all of its pointers as their physical address. Thus virt_to_bus/bus_to_virt are *everywhere*. 3) The implementation HP is using seems to be significantly pickier about when and how the command and RX units are started. some command ordering was changed. Examination of the mach driver leads one to believe that there might be a saner way to pull this off... anyone who feels like a full rewrite can be my guest. Split 02/13/2000 Sam Creasey (sammy@oh.verio.com) 02/01/2000 Initial modifications for parisc by Helge Deller (deller@gmx.de) 03/02/2000 changes for better/correct(?) cache-flushing (deller) */ /* 82596.c: A generic 82596 ethernet driver for linux. */ /* Based on Apricot.c Written 1994 by Mark Evans. This driver is for the Apricot 82596 bus-master interface Modularised 12/94 Mark Evans Modified to support the 82596 ethernet chips on 680x0 VME boards. by Richard Hirst <richard@sleepie.demon.co.uk> Renamed to be 82596.c 980825: Changed to receive directly in to sk_buffs which are allocated at open() time. Eliminates copy on incoming frames (small ones are still copied). Shared data now held in a non-cached page, so we can run on 68060 in copyback mode. TBD: * look at deferring rx frames rather than discarding (as per tulip) * handle tx ring full as per tulip * performace test to tune rx_copybreak Most of my modifications relate to the braindead big-endian implementation by Intel. When the i596 is operating in 'big-endian' mode, it thinks a 32 bit value of 0x12345678 should be stored as 0x56781234. This is a real pain, when you have linked lists which are shared by the 680x0 and the i596. Driver skeleton Written 1993 by Donald Becker. Copyright 1993 United States Government as represented by the Director, National Security Agency. This software may only be used and distributed according to the terms of the GNU General Public License as modified by SRC, incorporated herein by reference. The author may be reached as becker@scyld.com, or C/O Scyld Computing Corporation, 410 Severn Ave., Suite 210, Annapolis MD 21403 */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/string.h> #include <linux/ptrace.h> #include <linux/errno.h> #include <linux/ioport.h> #include <linux/slab.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/skbuff.h> #include <linux/init.h> #include <linux/pci.h> #include <linux/types.h> #include <linux/bitops.h> #include <asm/io.h> #include <asm/pgtable.h> #include <asm/irq.h> #include <asm/pdc.h> #include <asm/cache.h> #include <asm/parisc-device.h> #define LASI_82596_DRIVER_VERSION "LASI 82596 driver - Revision: 1.30" /* DEBUG flags */ #define DEB_INIT 0x0001 #define DEB_PROBE 0x0002 #define DEB_SERIOUS 0x0004 #define DEB_ERRORS 0x0008 #define DEB_MULTI 0x0010 #define DEB_TDR 0x0020 #define DEB_OPEN 0x0040 #define DEB_RESET 0x0080 #define DEB_ADDCMD 0x0100 #define DEB_STATUS 0x0200 #define DEB_STARTTX 0x0400 #define DEB_RXADDR 0x0800 #define DEB_TXADDR 0x1000 #define DEB_RXFRAME 0x2000 #define DEB_INTS 0x4000 #define DEB_STRUCT 0x8000 #define DEB_ANY 0xffff #define DEB(x,y) if (i596_debug & (x)) { y; } #define CHECK_WBACK(addr,len) \ do { dma_cache_sync((void *)addr, len, DMA_TO_DEVICE); } while (0) #define CHECK_INV(addr,len) \ do { dma_cache_sync((void *)addr, len, DMA_FROM_DEVICE); } while(0) #define CHECK_WBACK_INV(addr,len) \ do { dma_cache_sync((void *)addr, len, DMA_BIDIRECTIONAL); } while (0) #define PA_I82596_RESET 0 /* Offsets relative to LASI-LAN-Addr.*/ #define PA_CPU_PORT_L_ACCESS 4 #define PA_CHANNEL_ATTENTION 8 /* * Define various macros for Channel Attention, word swapping etc., dependent * on architecture. MVME and BVME are 680x0 based, otherwise it is Intel. */ #ifdef __BIG_ENDIAN #define WSWAPrfd(x) (((u32)(x)<<16) | ((((u32)(x)))>>16)) #define WSWAPrbd(x) (((u32)(x)<<16) | ((((u32)(x)))>>16)) #define WSWAPiscp(x) (((u32)(x)<<16) | ((((u32)(x)))>>16)) #define WSWAPscb(x) (((u32)(x)<<16) | ((((u32)(x)))>>16)) #define WSWAPcmd(x) (((u32)(x)<<16) | ((((u32)(x)))>>16)) #define WSWAPtbd(x) (((u32)(x)<<16) | ((((u32)(x)))>>16)) #define WSWAPchar(x) (((u32)(x)<<16) | ((((u32)(x)))>>16)) #define ISCP_BUSY 0x00010000 #define MACH_IS_APRICOT 0 #else #define WSWAPrfd(x) ((struct i596_rfd *)(x)) #define WSWAPrbd(x) ((struct i596_rbd *)(x)) #define WSWAPiscp(x) ((struct i596_iscp *)(x)) #define WSWAPscb(x) ((struct i596_scb *)(x)) #define WSWAPcmd(x) ((struct i596_cmd *)(x)) #define WSWAPtbd(x) ((struct i596_tbd *)(x)) #define WSWAPchar(x) ((char *)(x)) #define ISCP_BUSY 0x0001 #define MACH_IS_APRICOT 1 #endif /* * The MPU_PORT command allows direct access to the 82596. With PORT access * the following commands are available (p5-18). The 32-bit port command * must be word-swapped with the most significant word written first. * This only applies to VME boards. */ #define PORT_RESET 0x00 /* reset 82596 */ #define PORT_SELFTEST 0x01 /* selftest */ #define PORT_ALTSCP 0x02 /* alternate SCB address */ #define PORT_ALTDUMP 0x03 /* Alternate DUMP address */ static int i596_debug = (DEB_SERIOUS|DEB_PROBE); MODULE_AUTHOR("Richard Hirst"); MODULE_DESCRIPTION("i82596 driver"); MODULE_LICENSE("GPL"); module_param(i596_debug, int, 0); MODULE_PARM_DESC(i596_debug, "lasi_82596 debug mask"); /* Copy frames shorter than rx_copybreak, otherwise pass on up in * a full sized sk_buff. Value of 100 stolen from tulip.c (!alpha). */ static int rx_copybreak = 100; #define MAX_DRIVERS 4 /* max count of drivers */ #define PKT_BUF_SZ 1536 #define MAX_MC_CNT 64 #define I596_NULL ((u32)0xffffffff) #define CMD_EOL 0x8000 /* The last command of the list, stop. */ #define CMD_SUSP 0x4000 /* Suspend after doing cmd. */ #define CMD_INTR 0x2000 /* Interrupt after doing cmd. */ #define CMD_FLEX 0x0008 /* Enable flexible memory model */ enum commands { CmdNOp = 0, CmdSASetup = 1, CmdConfigure = 2, CmdMulticastList = 3, CmdTx = 4, CmdTDR = 5, CmdDump = 6, CmdDiagnose = 7 }; #define STAT_C 0x8000 /* Set to 0 after execution */ #define STAT_B 0x4000 /* Command being executed */ #define STAT_OK 0x2000 /* Command executed ok */ #define STAT_A 0x1000 /* Command aborted */ #define CUC_START 0x0100 #define CUC_RESUME 0x0200 #define CUC_SUSPEND 0x0300 #define CUC_ABORT 0x0400 #define RX_START 0x0010 #define RX_RESUME 0x0020 #define RX_SUSPEND 0x0030 #define RX_ABORT 0x0040 #define TX_TIMEOUT 5 #define OPT_SWAP_PORT 0x0001 /* Need to wordswp on the MPU port */ struct i596_reg { unsigned short porthi; unsigned short portlo; u32 ca; }; #define EOF 0x8000 #define SIZE_MASK 0x3fff struct i596_tbd { unsigned short size; unsigned short pad; dma_addr_t next; dma_addr_t data; u32 cache_pad[5]; /* Total 32 bytes... */ }; /* The command structure has two 'next' pointers; v_next is the address of * the next command as seen by the CPU, b_next is the address of the next * command as seen by the 82596. The b_next pointer, as used by the 82596 * always references the status field of the next command, rather than the * v_next field, because the 82596 is unaware of v_next. It may seem more * logical to put v_next at the end of the structure, but we cannot do that * because the 82596 expects other fields to be there, depending on command * type. */ struct i596_cmd { struct i596_cmd *v_next; /* Address from CPUs viewpoint */ unsigned short status; unsigned short command; dma_addr_t b_next; /* Address from i596 viewpoint */ }; struct tx_cmd { struct i596_cmd cmd; dma_addr_t tbd; unsigned short size; unsigned short pad; struct sk_buff *skb; /* So we can free it after tx */ dma_addr_t dma_addr; #ifdef __LP64__ u32 cache_pad[6]; /* Total 64 bytes... */ #else u32 cache_pad[1]; /* Total 32 bytes... */ #endif }; struct tdr_cmd { struct i596_cmd cmd; unsigned short status; unsigned short pad; }; struct mc_cmd { struct i596_cmd cmd; short mc_cnt; char mc_addrs[MAX_MC_CNT*6]; }; struct sa_cmd { struct i596_cmd cmd; char eth_addr[8]; }; struct cf_cmd { struct i596_cmd cmd; char i596_config[16]; }; struct i596_rfd { unsigned short stat; unsigned short cmd; dma_addr_t b_next; /* Address from i596 viewpoint */ dma_addr_t rbd; unsigned short count; unsigned short size; struct i596_rfd *v_next; /* Address from CPUs viewpoint */ struct i596_rfd *v_prev; #ifndef __LP64__ u32 cache_pad[2]; /* Total 32 bytes... */ #endif }; struct i596_rbd { /* hardware data */ unsigned short count; unsigned short zero1; dma_addr_t b_next; dma_addr_t b_data; /* Address from i596 viewpoint */ unsigned short size; unsigned short zero2; /* driver data */ struct sk_buff *skb; struct i596_rbd *v_next; dma_addr_t b_addr; /* This rbd addr from i596 view */ unsigned char *v_data; /* Address from CPUs viewpoint */ /* Total 32 bytes... */ #ifdef __LP64__ u32 cache_pad[4]; #endif }; /* These values as chosen so struct i596_private fits in one page... */ #define TX_RING_SIZE 32 #define RX_RING_SIZE 16 struct i596_scb { unsigned short status; unsigned short command; dma_addr_t cmd; dma_addr_t rfd; u32 crc_err; u32 align_err; u32 resource_err; u32 over_err; u32 rcvdt_err; u32 short_err; unsigned short t_on; unsigned short t_off; }; struct i596_iscp { u32 stat; dma_addr_t scb; }; struct i596_scp { u32 sysbus; u32 pad; dma_addr_t iscp; }; struct i596_private { volatile struct i596_scp scp __attribute__((aligned(32))); volatile struct i596_iscp iscp __attribute__((aligned(32))); volatile struct i596_scb scb __attribute__((aligned(32))); struct sa_cmd sa_cmd __attribute__((aligned(32))); struct cf_cmd cf_cmd __attribute__((aligned(32))); struct tdr_cmd tdr_cmd __attribute__((aligned(32))); struct mc_cmd mc_cmd __attribute__((aligned(32))); struct i596_rfd rfds[RX_RING_SIZE] __attribute__((aligned(32))); struct i596_rbd rbds[RX_RING_SIZE] __attribute__((aligned(32))); struct tx_cmd tx_cmds[TX_RING_SIZE] __attribute__((aligned(32))); struct i596_tbd tbds[TX_RING_SIZE] __attribute__((aligned(32))); u32 stat; int last_restart; struct i596_rfd *rfd_head; struct i596_rbd *rbd_head; struct i596_cmd *cmd_tail; struct i596_cmd *cmd_head; int cmd_backlog; u32 last_cmd; struct net_device_stats stats; int next_tx_cmd; int options; spinlock_t lock; dma_addr_t dma_addr; struct device *dev; }; static char init_setup[] = { 0x8E, /* length, prefetch on */ 0xC8, /* fifo to 8, monitor off */ 0x80, /* don't save bad frames */ 0x2E, /* No source address insertion, 8 byte preamble */ 0x00, /* priority and backoff defaults */ 0x60, /* interframe spacing */ 0x00, /* slot time LSB */ 0xf2, /* slot time and retries */ 0x00, /* promiscuous mode */ 0x00, /* collision detect */ 0x40, /* minimum frame length */ 0xff, 0x00, 0x7f /* *multi IA */ }; static int i596_open(struct net_device *dev); static int i596_start_xmit(struct sk_buff *skb, struct net_device *dev); static irqreturn_t i596_interrupt(int irq, void *dev_id); static int i596_close(struct net_device *dev); static struct net_device_stats *i596_get_stats(struct net_device *dev); static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd); static void i596_tx_timeout (struct net_device *dev); static void print_eth(unsigned char *buf, char *str); static void set_multicast_list(struct net_device *dev); static int rx_ring_size = RX_RING_SIZE; static int ticks_limit = 100; static int max_cmd_backlog = TX_RING_SIZE-1; #ifdef CONFIG_NET_POLL_CONTROLLER static void i596_poll_controller(struct net_device *dev); #endif static inline void CA(struct net_device *dev) { gsc_writel(0, dev->base_addr + PA_CHANNEL_ATTENTION); } static inline void MPU_PORT(struct net_device *dev, int c, dma_addr_t x) { struct i596_private *lp = dev->priv; u32 v = (u32) (c) | (u32) (x); u16 a, b; if (lp->options & OPT_SWAP_PORT) { a = v >> 16; b = v & 0xffff; } else { a = v & 0xffff; b = v >> 16; } gsc_writel(a, dev->base_addr + PA_CPU_PORT_L_ACCESS); udelay(1); gsc_writel(b, dev->base_addr + PA_CPU_PORT_L_ACCESS); } static inline int wait_istat(struct net_device *dev, struct i596_private *lp, int delcnt, char *str) { CHECK_INV(&(lp->iscp), sizeof(struct i596_iscp)); while (--delcnt && lp->iscp.stat) { udelay(10); CHECK_INV(&(lp->iscp), sizeof(struct i596_iscp)); } if (!delcnt) { printk("%s: %s, iscp.stat %04x, didn't clear\n", dev->name, str, lp->iscp.stat); return -1; } else return 0; } static inline int wait_cmd(struct net_device *dev, struct i596_private *lp, int delcnt, char *str) { CHECK_INV(&(lp->scb), sizeof(struct i596_scb)); while (--delcnt && lp->scb.command) { udelay(10); CHECK_INV(&(lp->scb), sizeof(struct i596_scb)); } if (!delcnt) { printk("%s: %s, status %4.4x, cmd %4.4x.\n", dev->name, str, lp->scb.status, lp->scb.command); return -1; } else return 0; } static void i596_display_data(struct net_device *dev) { struct i596_private *lp = dev->priv; struct i596_cmd *cmd; struct i596_rfd *rfd; struct i596_rbd *rbd; printk("lp and scp at %p, .sysbus = %08x, .iscp = %08x\n", &lp->scp, lp->scp.sysbus, lp->scp.iscp); printk("iscp at %p, iscp.stat = %08x, .scb = %08x\n", &lp->iscp, lp->iscp.stat, lp->iscp.scb); printk("scb at %p, scb.status = %04x, .command = %04x," " .cmd = %08x, .rfd = %08x\n", &lp->scb, lp->scb.status, lp->scb.command, lp->scb.cmd, lp->scb.rfd); printk(" errors: crc %x, align %x, resource %x," " over %x, rcvdt %x, short %x\n", lp->scb.crc_err, lp->scb.align_err, lp->scb.resource_err, lp->scb.over_err, lp->scb.rcvdt_err, lp->scb.short_err); cmd = lp->cmd_head; while (cmd != NULL) { printk("cmd at %p, .status = %04x, .command = %04x, .b_next = %08x\n", cmd, cmd->status, cmd->command, cmd->b_next); cmd = cmd->v_next; } rfd = lp->rfd_head; printk("rfd_head = %p\n", rfd); do { printk(" %p .stat %04x, .cmd %04x, b_next %08x, rbd %08x," " count %04x\n", rfd, rfd->stat, rfd->cmd, rfd->b_next, rfd->rbd, rfd->count); rfd = rfd->v_next; } while (rfd != lp->rfd_head); rbd = lp->rbd_head; printk("rbd_head = %p\n", rbd); do { printk(" %p .count %04x, b_next %08x, b_data %08x, size %04x\n", rbd, rbd->count, rbd->b_next, rbd->b_data, rbd->size); rbd = rbd->v_next; } while (rbd != lp->rbd_head); CHECK_INV(lp, sizeof(struct i596_private)); } #if defined(ENABLE_MVME16x_NET) || defined(ENABLE_BVME6000_NET) static void i596_error(int irq, void *dev_id) { struct net_device *dev = dev_id; volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000; pcc2[0x28] = 1; pcc2[0x2b] = 0x1d; printk("%s: Error interrupt\n", dev->name); i596_display_data(dev); } #endif #define virt_to_dma(lp,v) ((lp)->dma_addr + (dma_addr_t)((unsigned long)(v)-(unsigned long)(lp))) static inline void init_rx_bufs(struct net_device *dev) { struct i596_private *lp = dev->priv; int i; struct i596_rfd *rfd; struct i596_rbd *rbd; /* First build the Receive Buffer Descriptor List */ for (i = 0, rbd = lp->rbds; i < rx_ring_size; i++, rbd++) { dma_addr_t dma_addr; struct sk_buff *skb = dev_alloc_skb(PKT_BUF_SZ + 4); if (skb == NULL) panic("%s: alloc_skb() failed", __FILE__); skb_reserve(skb, 2); dma_addr = dma_map_single(lp->dev, skb->data,PKT_BUF_SZ, DMA_FROM_DEVICE); skb->dev = dev; rbd->v_next = rbd+1; rbd->b_next = WSWAPrbd(virt_to_dma(lp,rbd+1)); rbd->b_addr = WSWAPrbd(virt_to_dma(lp,rbd)); rbd->skb = skb; rbd->v_data = skb->data; rbd->b_data = WSWAPchar(dma_addr); rbd->size = PKT_BUF_SZ; } lp->rbd_head = lp->rbds; rbd = lp->rbds + rx_ring_size - 1; rbd->v_next = lp->rbds; rbd->b_next = WSWAPrbd(virt_to_dma(lp,lp->rbds)); /* Now build the Receive Frame Descriptor List */ for (i = 0, rfd = lp->rfds; i < rx_ring_size; i++, rfd++) { rfd->rbd = I596_NULL; rfd->v_next = rfd+1; rfd->v_prev = rfd-1; rfd->b_next = WSWAPrfd(virt_to_dma(lp,rfd+1)); rfd->cmd = CMD_FLEX; } lp->rfd_head = lp->rfds; lp->scb.rfd = WSWAPrfd(virt_to_dma(lp,lp->rfds)); rfd = lp->rfds; rfd->rbd = WSWAPrbd(virt_to_dma(lp,lp->rbd_head)); rfd->v_prev = lp->rfds + rx_ring_size - 1; rfd = lp->rfds + rx_ring_size - 1; rfd->v_next = lp->rfds; rfd->b_next = WSWAPrfd(virt_to_dma(lp,lp->rfds)); rfd->cmd = CMD_EOL|CMD_FLEX; CHECK_WBACK_INV(lp, sizeof(struct i596_private)); } static inline void remove_rx_bufs(struct net_device *dev) { struct i596_private *lp = dev->priv; struct i596_rbd *rbd; int i; for (i = 0, rbd = lp->rbds; i < rx_ring_size; i++, rbd++) { if (rbd->skb == NULL) break; dma_unmap_single(lp->dev, (dma_addr_t)WSWAPchar(rbd->b_data), PKT_BUF_SZ, DMA_FROM_DEVICE); dev_kfree_skb(rbd->skb); } } static void rebuild_rx_bufs(struct net_device *dev) { struct i596_private *lp = dev->priv; int i; /* Ensure rx frame/buffer descriptors are tidy */ for (i = 0; i < rx_ring_size; i++) { lp->rfds[i].rbd = I596_NULL; lp->rfds[i].cmd = CMD_FLEX; } lp->rfds[rx_ring_size-1].cmd = CMD_EOL|CMD_FLEX; lp->rfd_head = lp->rfds; lp->scb.rfd = WSWAPrfd(virt_to_dma(lp,lp->rfds)); lp->rbd_head = lp->rbds; lp->rfds[0].rbd = WSWAPrbd(virt_to_dma(lp,lp->rbds)); CHECK_WBACK_INV(lp, sizeof(struct i596_private)); } static int init_i596_mem(struct net_device *dev) { struct i596_private *lp = dev->priv; unsigned long flags; disable_irq(dev->irq); /* disable IRQs from LAN */ DEB(DEB_INIT, printk("RESET 82596 port: %lx (with IRQ %d disabled)\n", (dev->base_addr + PA_I82596_RESET), dev->irq)); gsc_writel(0, (dev->base_addr + PA_I82596_RESET)); /* Hard Reset */ udelay(100); /* Wait 100us - seems to help */ /* change the scp address */ lp->last_cmd = jiffies; lp->scp.sysbus = 0x0000006c; lp->scp.iscp = WSWAPiscp(virt_to_dma(lp,&(lp->iscp))); lp->iscp.scb = WSWAPscb(virt_to_dma(lp,&(lp->scb))); lp->iscp.stat = ISCP_BUSY; lp->cmd_backlog = 0; lp->cmd_head = NULL; lp->scb.cmd = I596_NULL; DEB(DEB_INIT, printk("%s: starting i82596.\n", dev->name)); CHECK_WBACK(&(lp->scp), sizeof(struct i596_scp)); CHECK_WBACK(&(lp->iscp), sizeof(struct i596_iscp)); MPU_PORT(dev, PORT_ALTSCP, virt_to_dma(lp,&lp->scp)); CA(dev); if (wait_istat(dev, lp, 1000, "initialization timed out")) goto failed; DEB(DEB_INIT, printk("%s: i82596 initialization successful\n", dev->name)); /* Ensure rx frame/buffer descriptors are tidy */ rebuild_rx_bufs(dev); lp->scb.command = 0; CHECK_WBACK(&(lp->scb), sizeof(struct i596_scb)); enable_irq(dev->irq); /* enable IRQs from LAN */ DEB(DEB_INIT, printk("%s: queuing CmdConfigure\n", dev->name)); memcpy(lp->cf_cmd.i596_config, init_setup, 14); lp->cf_cmd.cmd.command = CmdConfigure; CHECK_WBACK(&(lp->cf_cmd), sizeof(struct cf_cmd)); i596_add_cmd(dev, &lp->cf_cmd.cmd); DEB(DEB_INIT, printk("%s: queuing CmdSASetup\n", dev->name)); memcpy(lp->sa_cmd.eth_addr, dev->dev_addr, 6); lp->sa_cmd.cmd.command = CmdSASetup; CHECK_WBACK(&(lp->sa_cmd), sizeof(struct sa_cmd)); i596_add_cmd(dev, &lp->sa_cmd.cmd); DEB(DEB_INIT, printk("%s: queuing CmdTDR\n", dev->name)); lp->tdr_cmd.cmd.command = CmdTDR; CHECK_WBACK(&(lp->tdr_cmd), sizeof(struct tdr_cmd)); i596_add_cmd(dev, &lp->tdr_cmd.cmd); spin_lock_irqsave (&lp->lock, flags); if (wait_cmd(dev, lp, 1000, "timed out waiting to issue RX_START")) { spin_unlock_irqrestore (&lp->lock, flags); goto failed; } DEB(DEB_INIT, printk("%s: Issuing RX_START\n", dev->name)); lp->scb.command = RX_START; lp->scb.rfd = WSWAPrfd(virt_to_dma(lp,lp->rfds)); CHECK_WBACK(&(lp->scb), sizeof(struct i596_scb)); CA(dev); spin_unlock_irqrestore (&lp->lock, flags); if (wait_cmd(dev, lp, 1000, "RX_START not processed")) goto failed; DEB(DEB_INIT, printk("%s: Receive unit started OK\n", dev->name)); return 0; failed: printk("%s: Failed to initialise 82596\n", dev->name); MPU_PORT(dev, PORT_RESET, 0); return -1; } static inline int i596_rx(struct net_device *dev) { struct i596_private *lp = dev->priv; struct i596_rfd *rfd; struct i596_rbd *rbd; int frames = 0; DEB(DEB_RXFRAME, printk("i596_rx(), rfd_head %p, rbd_head %p\n", lp->rfd_head, lp->rbd_head)); rfd = lp->rfd_head; /* Ref next frame to check */ CHECK_INV(rfd, sizeof(struct i596_rfd)); while ((rfd->stat) & STAT_C) { /* Loop while complete frames */ if (rfd->rbd == I596_NULL) rbd = NULL; else if (rfd->rbd == lp->rbd_head->b_addr) { rbd = lp->rbd_head; CHECK_INV(rbd, sizeof(struct i596_rbd)); } else { printk("%s: rbd chain broken!\n", dev->name); /* XXX Now what? */ rbd = NULL; } DEB(DEB_RXFRAME, printk(" rfd %p, rfd.rbd %08x, rfd.stat %04x\n", rfd, rfd->rbd, rfd->stat)); if (rbd != NULL && ((rfd->stat) & STAT_OK)) { /* a good frame */ int pkt_len = rbd->count & 0x3fff; struct sk_buff *skb = rbd->skb; int rx_in_place = 0; DEB(DEB_RXADDR,print_eth(rbd->v_data, "received")); frames++; /* Check if the packet is long enough to just accept * without copying to a properly sized skbuff. */ if (pkt_len > rx_copybreak) { struct sk_buff *newskb; dma_addr_t dma_addr; dma_unmap_single(lp->dev,(dma_addr_t)WSWAPchar(rbd->b_data), PKT_BUF_SZ, DMA_FROM_DEVICE); /* Get fresh skbuff to replace filled one. */ newskb = dev_alloc_skb(PKT_BUF_SZ + 4); if (newskb == NULL) { skb = NULL; /* drop pkt */ goto memory_squeeze; } skb_reserve(newskb, 2); /* Pass up the skb already on the Rx ring. */ skb_put(skb, pkt_len); rx_in_place = 1; rbd->skb = newskb; newskb->dev = dev; dma_addr = dma_map_single(lp->dev, newskb->data, PKT_BUF_SZ, DMA_FROM_DEVICE); rbd->v_data = newskb->data; rbd->b_data = WSWAPchar(dma_addr); CHECK_WBACK_INV(rbd, sizeof(struct i596_rbd)); } else skb = dev_alloc_skb(pkt_len + 2); memory_squeeze: if (skb == NULL) { /* XXX tulip.c can defer packets here!! */ printk("%s: i596_rx Memory squeeze, dropping packet.\n", dev->name); lp->stats.rx_dropped++; } else { skb->dev = dev; if (!rx_in_place) { /* 16 byte align the data fields */ dma_sync_single_for_cpu(lp->dev, (dma_addr_t)WSWAPchar(rbd->b_data), PKT_BUF_SZ, DMA_FROM_DEVICE); skb_reserve(skb, 2); memcpy(skb_put(skb,pkt_len), rbd->v_data, pkt_len); dma_sync_single_for_device(lp->dev, (dma_addr_t)WSWAPchar(rbd->b_data), PKT_BUF_SZ, DMA_FROM_DEVICE); } skb->len = pkt_len; skb->protocol=eth_type_trans(skb,dev); netif_rx(skb); dev->last_rx = jiffies; lp->stats.rx_packets++; lp->stats.rx_bytes+=pkt_len; } } else { DEB(DEB_ERRORS, printk("%s: Error, rfd.stat = 0x%04x\n", dev->name, rfd->stat)); lp->stats.rx_errors++; if ((rfd->stat) & 0x0001) lp->stats.collisions++; if ((rfd->stat) & 0x0080) lp->stats.rx_length_errors++; if ((rfd->stat) & 0x0100) lp->stats.rx_over_errors++; if ((rfd->stat) & 0x0200) lp->stats.rx_fifo_errors++; if ((rfd->stat) & 0x0400) lp->stats.rx_frame_errors++; if ((rfd->stat) & 0x0800) lp->stats.rx_crc_errors++; if ((rfd->stat) & 0x1000) lp->stats.rx_length_errors++; } /* Clear the buffer descriptor count and EOF + F flags */ if (rbd != NULL && (rbd->count & 0x4000)) { rbd->count = 0; lp->rbd_head = rbd->v_next; CHECK_WBACK_INV(rbd, sizeof(struct i596_rbd)); } /* Tidy the frame descriptor, marking it as end of list */ rfd->rbd = I596_NULL; rfd->stat = 0; rfd->cmd = CMD_EOL|CMD_FLEX; rfd->count = 0; /* Remove end-of-list from old end descriptor */ rfd->v_prev->cmd = CMD_FLEX; /* Update record of next frame descriptor to process */ lp->scb.rfd = rfd->b_next; lp->rfd_head = rfd->v_next; CHECK_WBACK_INV(rfd->v_prev, sizeof(struct i596_rfd)); CHECK_WBACK_INV(rfd, sizeof(struct i596_rfd)); rfd = lp->rfd_head; CHECK_INV(rfd, sizeof(struct i596_rfd)); } DEB(DEB_RXFRAME, printk("frames %d\n", frames)); return 0; } static inline void i596_cleanup_cmd(struct net_device *dev, struct i596_private *lp) { struct i596_cmd *ptr; while (lp->cmd_head != NULL) { ptr = lp->cmd_head; lp->cmd_head = ptr->v_next; lp->cmd_backlog--; switch ((ptr->command) & 0x7) { case CmdTx: { struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr; struct sk_buff *skb = tx_cmd->skb; dma_unmap_single(lp->dev, tx_cmd->dma_addr, skb->len, DMA_TO_DEVICE); dev_kfree_skb(skb); lp->stats.tx_errors++; lp->stats.tx_aborted_errors++; ptr->v_next = NULL; ptr->b_next = I596_NULL; tx_cmd->cmd.command = 0; /* Mark as free */ break; } default: ptr->v_next = NULL; ptr->b_next = I596_NULL; } CHECK_WBACK_INV(ptr, sizeof(struct i596_cmd)); } wait_cmd(dev, lp, 100, "i596_cleanup_cmd timed out"); lp->scb.cmd = I596_NULL; CHECK_WBACK(&(lp->scb), sizeof(struct i596_scb)); } static inline void i596_reset(struct net_device *dev, struct i596_private *lp) { unsigned long flags; DEB(DEB_RESET, printk("i596_reset\n")); spin_lock_irqsave (&lp->lock, flags); wait_cmd(dev, lp, 100, "i596_reset timed out"); netif_stop_queue(dev); /* FIXME: this command might cause an lpmc */ lp->scb.command = CUC_ABORT | RX_ABORT; CHECK_WBACK(&(lp->scb), sizeof(struct i596_scb)); CA(dev); /* wait for shutdown */ wait_cmd(dev, lp, 1000, "i596_reset 2 timed out"); spin_unlock_irqrestore (&lp->lock, flags); i596_cleanup_cmd(dev,lp); i596_rx(dev); netif_start_queue(dev); init_i596_mem(dev); } static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd) { struct i596_private *lp = dev->priv; unsigned long flags; DEB(DEB_ADDCMD, printk("i596_add_cmd cmd_head %p\n", lp->cmd_head)); cmd->status = 0; cmd->command |= (CMD_EOL | CMD_INTR); cmd->v_next = NULL; cmd->b_next = I596_NULL; CHECK_WBACK(cmd, sizeof(struct i596_cmd)); spin_lock_irqsave (&lp->lock, flags); if (lp->cmd_head != NULL) { lp->cmd_tail->v_next = cmd; lp->cmd_tail->b_next = WSWAPcmd(virt_to_dma(lp,&cmd->status)); CHECK_WBACK(lp->cmd_tail, sizeof(struct i596_cmd)); } else { lp->cmd_head = cmd; wait_cmd(dev, lp, 100, "i596_add_cmd timed out"); lp->scb.cmd = WSWAPcmd(virt_to_dma(lp,&cmd->status)); lp->scb.command = CUC_START; CHECK_WBACK(&(lp->scb), sizeof(struct i596_scb)); CA(dev); } lp->cmd_tail = cmd; lp->cmd_backlog++; spin_unlock_irqrestore (&lp->lock, flags); if (lp->cmd_backlog > max_cmd_backlog) { unsigned long tickssofar = jiffies - lp->last_cmd; if (tickssofar < ticks_limit) return; printk("%s: command unit timed out, status resetting.\n", dev->name); #if 1 i596_reset(dev, lp); #endif } } #if 0 /* this function makes a perfectly adequate probe... but we have a device list */ static int i596_test(struct net_device *dev) { struct i596_private *lp = dev->priv; volatile int *tint; u32 data; tint = (volatile int *)(&(lp->scp)); data = virt_to_dma(lp,tint); tint[1] = -1; CHECK_WBACK(tint,PAGE_SIZE); MPU_PORT(dev, 1, data); for(data = 1000000; data; data--) { CHECK_INV(tint,PAGE_SIZE); if(tint[1] != -1) break; } printk("i596_test result %d\n", tint[1]); } #endif static int i596_open(struct net_device *dev) { DEB(DEB_OPEN, printk("%s: i596_open() irq %d.\n", dev->name, dev->irq)); if (request_irq(dev->irq, &i596_interrupt, 0, "i82596", dev)) { printk("%s: IRQ %d not free\n", dev->name, dev->irq); goto out; } init_rx_bufs(dev); if (init_i596_mem(dev)) { printk("%s: Failed to init memory\n", dev->name); goto out_remove_rx_bufs; } netif_start_queue(dev); return 0; out_remove_rx_bufs: remove_rx_bufs(dev); free_irq(dev->irq, dev); out: return -EAGAIN; } static void i596_tx_timeout (struct net_device *dev) { struct i596_private *lp = dev->priv; /* Transmitter timeout, serious problems. */ DEB(DEB_ERRORS, printk("%s: transmit timed out, status resetting.\n", dev->name)); lp->stats.tx_errors++; /* Try to restart the adaptor */ if (lp->last_restart == lp->stats.tx_packets) { DEB(DEB_ERRORS, printk("Resetting board.\n")); /* Shutdown and restart */ i596_reset (dev, lp); } else { /* Issue a channel attention signal */ DEB(DEB_ERRORS, printk("Kicking board.\n")); lp->scb.command = CUC_START | RX_START; CHECK_WBACK_INV(&(lp->scb), sizeof(struct i596_scb)); CA (dev); lp->last_restart = lp->stats.tx_packets; } dev->trans_start = jiffies; netif_wake_queue (dev); } static int i596_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct i596_private *lp = dev->priv; struct tx_cmd *tx_cmd; struct i596_tbd *tbd; short length = skb->len; dev->trans_start = jiffies; DEB(DEB_STARTTX, printk("%s: i596_start_xmit(%x,%p) called\n", dev->name, skb->len, skb->data)); if (length < ETH_ZLEN) { if (skb_padto(skb, ETH_ZLEN)) return 0; length = ETH_ZLEN; } netif_stop_queue(dev); tx_cmd = lp->tx_cmds + lp->next_tx_cmd; tbd = lp->tbds + lp->next_tx_cmd; if (tx_cmd->cmd.command) { DEB(DEB_ERRORS, printk("%s: xmit ring full, dropping packet.\n", dev->name)); lp->stats.tx_dropped++; dev_kfree_skb(skb); } else { if (++lp->next_tx_cmd == TX_RING_SIZE) lp->next_tx_cmd = 0; tx_cmd->tbd = WSWAPtbd(virt_to_dma(lp,tbd)); tbd->next = I596_NULL; tx_cmd->cmd.command = CMD_FLEX | CmdTx; tx_cmd->skb = skb; tx_cmd->pad = 0; tx_cmd->size = 0; tbd->pad = 0; tbd->size = EOF | length; tx_cmd->dma_addr = dma_map_single(lp->dev, skb->data, skb->len, DMA_TO_DEVICE); tbd->data = WSWAPchar(tx_cmd->dma_addr); DEB(DEB_TXADDR,print_eth(skb->data, "tx-queued")); CHECK_WBACK_INV(tx_cmd, sizeof(struct tx_cmd)); CHECK_WBACK_INV(tbd, sizeof(struct i596_tbd)); i596_add_cmd(dev, &tx_cmd->cmd); lp->stats.tx_packets++; lp->stats.tx_bytes += length; } netif_start_queue(dev); return 0; } static void print_eth(unsigned char *add, char *str) { int i; printk("i596 0x%p, ", add); for (i = 0; i < 6; i++) printk(" %02X", add[i + 6]); printk(" -->"); for (i = 0; i < 6; i++) printk(" %02X", add[i]); printk(" %02X%02X, %s\n", add[12], add[13], str); } #define LAN_PROM_ADDR 0xF0810000 static int __devinit i82596_probe(struct net_device *dev, struct device *gen_dev) { int i; struct i596_private *lp; char eth_addr[6]; dma_addr_t dma_addr; /* This lot is ensure things have been cache line aligned. */ if (sizeof(struct i596_rfd) != 32) { printk("82596: sizeof(struct i596_rfd) = %d\n", (int)sizeof(struct i596_rfd)); return -ENODEV; } if ((sizeof(struct i596_rbd) % 32) != 0) { printk("82596: sizeof(struct i596_rbd) = %d\n", (int)sizeof(struct i596_rbd)); return -ENODEV; } if ((sizeof(struct tx_cmd) % 32) != 0) { printk("82596: sizeof(struct tx_cmd) = %d\n", (int)sizeof(struct tx_cmd)); return -ENODEV; } if (sizeof(struct i596_tbd) != 32) { printk("82596: sizeof(struct i596_tbd) = %d\n", (int)sizeof(struct i596_tbd)); return -ENODEV; } #ifndef __LP64__ if (sizeof(struct i596_private) > 4096) { printk("82596: sizeof(struct i596_private) = %d\n", (int)sizeof(struct i596_private)); return -ENODEV; } #endif if (!dev->base_addr || !dev->irq) return -ENODEV; if (pdc_lan_station_id(eth_addr, dev->base_addr)) { for (i=0; i < 6; i++) { eth_addr[i] = gsc_readb(LAN_PROM_ADDR + i); } printk(KERN_INFO "%s: MAC of HP700 LAN read from EEPROM\n", __FILE__); } dev->mem_start = (unsigned long) dma_alloc_noncoherent(gen_dev, sizeof(struct i596_private), &dma_addr, GFP_KERNEL); if (!dev->mem_start) { printk(KERN_ERR "%s: Couldn't get shared memory\n", __FILE__); return -ENOMEM; } for (i = 0; i < 6; i++) dev->dev_addr[i] = eth_addr[i]; /* The 82596-specific entries in the device structure. */ dev->open = i596_open; dev->stop = i596_close; dev->hard_start_xmit = i596_start_xmit; dev->get_stats = i596_get_stats; dev->set_multicast_list = set_multicast_list; dev->tx_timeout = i596_tx_timeout; dev->watchdog_timeo = TX_TIMEOUT; #ifdef CONFIG_NET_POLL_CONTROLLER dev->poll_controller = i596_poll_controller; #endif dev->priv = (void *)(dev->mem_start); lp = dev->priv; memset(lp, 0, sizeof(struct i596_private)); lp->scb.command = 0; lp->scb.cmd = I596_NULL; lp->scb.rfd = I596_NULL; spin_lock_init(&lp->lock); lp->dma_addr = dma_addr; lp->dev = gen_dev; CHECK_WBACK_INV(dev->mem_start, sizeof(struct i596_private)); i = register_netdev(dev); if (i) { lp = dev->priv; dma_free_noncoherent(lp->dev, sizeof(struct i596_private), (void *)dev->mem_start, lp->dma_addr); return i; }; DEB(DEB_PROBE, printk(KERN_INFO "%s: 82596 at %#3lx,", dev->name, dev->base_addr)); for (i = 0; i < 6; i++) DEB(DEB_PROBE, printk(" %2.2X", dev->dev_addr[i])); DEB(DEB_PROBE, printk(" IRQ %d.\n", dev->irq)); DEB(DEB_INIT, printk(KERN_INFO "%s: lp at 0x%p (%d bytes), lp->scb at 0x%p\n", dev->name, lp, (int)sizeof(struct i596_private), &lp->scb)); return 0; } #ifdef CONFIG_NET_POLL_CONTROLLER static void i596_poll_controller(struct net_device *dev) { disable_irq(dev->irq); i596_interrupt(dev->irq, dev); enable_irq(dev->irq); } #endif static irqreturn_t i596_interrupt(int irq, void *dev_id) { struct net_device *dev = dev_id; struct i596_private *lp; unsigned short status, ack_cmd = 0; if (dev == NULL) { printk("%s: irq %d for unknown device.\n", __FUNCTION__, irq); return IRQ_NONE; } lp = dev->priv; spin_lock (&lp->lock); wait_cmd(dev, lp, 100, "i596 interrupt, timeout"); status = lp->scb.status; DEB(DEB_INTS, printk("%s: i596 interrupt, IRQ %d, status %4.4x.\n", dev->name, irq, status)); ack_cmd = status & 0xf000; if (!ack_cmd) { DEB(DEB_ERRORS, printk("%s: interrupt with no events\n", dev->name)); spin_unlock (&lp->lock); return IRQ_NONE; } if ((status & 0x8000) || (status & 0x2000)) { struct i596_cmd *ptr; if ((status & 0x8000)) DEB(DEB_INTS, printk("%s: i596 interrupt completed command.\n", dev->name)); if ((status & 0x2000)) DEB(DEB_INTS, printk("%s: i596 interrupt command unit inactive %x.\n", dev->name, status & 0x0700)); while (lp->cmd_head != NULL) { CHECK_INV(lp->cmd_head, sizeof(struct i596_cmd)); if (!(lp->cmd_head->status & STAT_C)) break; ptr = lp->cmd_head; DEB(DEB_STATUS, printk("cmd_head->status = %04x, ->command = %04x\n", lp->cmd_head->status, lp->cmd_head->command)); lp->cmd_head = ptr->v_next; lp->cmd_backlog--; switch ((ptr->command) & 0x7) { case CmdTx: { struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr; struct sk_buff *skb = tx_cmd->skb; if ((ptr->status) & STAT_OK) { DEB(DEB_TXADDR, print_eth(skb->data, "tx-done")); } else { lp->stats.tx_errors++; if ((ptr->status) & 0x0020) lp->stats.collisions++; if (!((ptr->status) & 0x0040)) lp->stats.tx_heartbeat_errors++; if ((ptr->status) & 0x0400) lp->stats.tx_carrier_errors++; if ((ptr->status) & 0x0800) lp->stats.collisions++; if ((ptr->status) & 0x1000) lp->stats.tx_aborted_errors++; } dma_unmap_single(lp->dev, tx_cmd->dma_addr, skb->len, DMA_TO_DEVICE); dev_kfree_skb_irq(skb); tx_cmd->cmd.command = 0; /* Mark free */ break; } case CmdTDR: { unsigned short status = ((struct tdr_cmd *)ptr)->status; if (status & 0x8000) { DEB(DEB_ANY, printk("%s: link ok.\n", dev->name)); } else { if (status & 0x4000) printk("%s: Transceiver problem.\n", dev->name); if (status & 0x2000) printk("%s: Termination problem.\n", dev->name); if (status & 0x1000) printk("%s: Short circuit.\n", dev->name); DEB(DEB_TDR, printk("%s: Time %d.\n", dev->name, status & 0x07ff)); } break; } case CmdConfigure: /* Zap command so set_multicast_list() knows it is free */ ptr->command = 0; break; } ptr->v_next = NULL; ptr->b_next = I596_NULL; CHECK_WBACK(ptr, sizeof(struct i596_cmd)); lp->last_cmd = jiffies; } /* This mess is arranging that only the last of any outstanding * commands has the interrupt bit set. Should probably really * only add to the cmd queue when the CU is stopped. */ ptr = lp->cmd_head; while ((ptr != NULL) && (ptr != lp->cmd_tail)) { struct i596_cmd *prev = ptr; ptr->command &= 0x1fff; ptr = ptr->v_next; CHECK_WBACK_INV(prev, sizeof(struct i596_cmd)); } if ((lp->cmd_head != NULL)) ack_cmd |= CUC_START; lp->scb.cmd = WSWAPcmd(virt_to_dma(lp,&lp->cmd_head->status)); CHECK_WBACK_INV(&lp->scb, sizeof(struct i596_scb)); } if ((status & 0x1000) || (status & 0x4000)) { if ((status & 0x4000)) DEB(DEB_INTS, printk("%s: i596 interrupt received a frame.\n", dev->name)); i596_rx(dev); /* Only RX_START if stopped - RGH 07-07-96 */ if (status & 0x1000) { if (netif_running(dev)) { DEB(DEB_ERRORS, printk("%s: i596 interrupt receive unit inactive, status 0x%x\n", dev->name, status)); ack_cmd |= RX_START; lp->stats.rx_errors++; lp->stats.rx_fifo_errors++; rebuild_rx_bufs(dev); } } } wait_cmd(dev, lp, 100, "i596 interrupt, timeout"); lp->scb.command = ack_cmd; CHECK_WBACK(&lp->scb, sizeof(struct i596_scb)); /* DANGER: I suspect that some kind of interrupt acknowledgement aside from acking the 82596 might be needed here... but it's running acceptably without */ CA(dev); wait_cmd(dev, lp, 100, "i596 interrupt, exit timeout"); DEB(DEB_INTS, printk("%s: exiting interrupt.\n", dev->name)); spin_unlock (&lp->lock); return IRQ_HANDLED; } static int i596_close(struct net_device *dev) { struct i596_private *lp = dev->priv; unsigned long flags; netif_stop_queue(dev); DEB(DEB_INIT, printk("%s: Shutting down ethercard, status was %4.4x.\n", dev->name, lp->scb.status)); spin_lock_irqsave(&lp->lock, flags); wait_cmd(dev, lp, 100, "close1 timed out"); lp->scb.command = CUC_ABORT | RX_ABORT; CHECK_WBACK(&lp->scb, sizeof(struct i596_scb)); CA(dev); wait_cmd(dev, lp, 100, "close2 timed out"); spin_unlock_irqrestore(&lp->lock, flags); DEB(DEB_STRUCT,i596_display_data(dev)); i596_cleanup_cmd(dev,lp); disable_irq(dev->irq); free_irq(dev->irq, dev); remove_rx_bufs(dev); return 0; } static struct net_device_stats * i596_get_stats(struct net_device *dev) { struct i596_private *lp = dev->priv; return &lp->stats; } /* * Set or clear the multicast filter for this adaptor. */ static void set_multicast_list(struct net_device *dev) { struct i596_private *lp = dev->priv; int config = 0, cnt; DEB(DEB_MULTI, printk("%s: set multicast list, %d entries, promisc %s, allmulti %s\n", dev->name, dev->mc_count, dev->flags & IFF_PROMISC ? "ON" : "OFF", dev->flags & IFF_ALLMULTI ? "ON" : "OFF")); if ((dev->flags & IFF_PROMISC) && !(lp->cf_cmd.i596_config[8] & 0x01)) { lp->cf_cmd.i596_config[8] |= 0x01; config = 1; } if (!(dev->flags & IFF_PROMISC) && (lp->cf_cmd.i596_config[8] & 0x01)) { lp->cf_cmd.i596_config[8] &= ~0x01; config = 1; } if ((dev->flags & IFF_ALLMULTI) && (lp->cf_cmd.i596_config[11] & 0x20)) { lp->cf_cmd.i596_config[11] &= ~0x20; config = 1; } if (!(dev->flags & IFF_ALLMULTI) && !(lp->cf_cmd.i596_config[11] & 0x20)) { lp->cf_cmd.i596_config[11] |= 0x20; config = 1; } if (config) { if (lp->cf_cmd.cmd.command) printk("%s: config change request already queued\n", dev->name); else { lp->cf_cmd.cmd.command = CmdConfigure; CHECK_WBACK_INV(&lp->cf_cmd, sizeof(struct cf_cmd)); i596_add_cmd(dev, &lp->cf_cmd.cmd); } } cnt = dev->mc_count; if (cnt > MAX_MC_CNT) { cnt = MAX_MC_CNT; printk("%s: Only %d multicast addresses supported", dev->name, cnt); } if (dev->mc_count > 0) { struct dev_mc_list *dmi; unsigned char *cp; struct mc_cmd *cmd; cmd = &lp->mc_cmd; cmd->cmd.command = CmdMulticastList; cmd->mc_cnt = dev->mc_count * 6; cp = cmd->mc_addrs; for (dmi = dev->mc_list; cnt && dmi != NULL; dmi = dmi->next, cnt--, cp += 6) { memcpy(cp, dmi->dmi_addr, 6); if (i596_debug > 1) DEB(DEB_MULTI, printk("%s: Adding address %02x:%02x:%02x:%02x:%02x:%02x\n", dev->name, cp[0],cp[1],cp[2],cp[3],cp[4],cp[5])); } CHECK_WBACK_INV(&lp->mc_cmd, sizeof(struct mc_cmd)); i596_add_cmd(dev, &cmd->cmd); } } static int debug = -1; module_param(debug, int, 0); MODULE_PARM_DESC(debug, "lasi_82596 debug mask"); static int num_drivers; static struct net_device *netdevs[MAX_DRIVERS]; static int __devinit lan_init_chip(struct parisc_device *dev) { struct net_device *netdevice; int retval; if (num_drivers >= MAX_DRIVERS) { /* max count of possible i82596 drivers reached */ return -ENOMEM; } if (num_drivers == 0) printk(KERN_INFO LASI_82596_DRIVER_VERSION "\n"); if (!dev->irq) { printk(KERN_ERR "%s: IRQ not found for i82596 at 0x%lx\n", __FILE__, dev->hpa.start); return -ENODEV; } printk(KERN_INFO "Found i82596 at 0x%lx, IRQ %d\n", dev->hpa.start, dev->irq); netdevice = alloc_etherdev(0); if (!netdevice) return -ENOMEM; netdevice->base_addr = dev->hpa.start; netdevice->irq = dev->irq; retval = i82596_probe(netdevice, &dev->dev); if (retval) { free_netdev(netdevice); return -ENODEV; } if (dev->id.sversion == 0x72) { ((struct i596_private *)netdevice->priv)->options = OPT_SWAP_PORT; } netdevs[num_drivers++] = netdevice; return retval; } static struct parisc_device_id lan_tbl[] = { { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008a }, { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00072 }, { 0, } }; MODULE_DEVICE_TABLE(parisc, lan_tbl); static struct parisc_driver lan_driver = { .name = "lasi_82596", .id_table = lan_tbl, .probe = lan_init_chip, }; static int __devinit lasi_82596_init(void) { if (debug >= 0) i596_debug = debug; return register_parisc_driver(&lan_driver); } module_init(lasi_82596_init); static void __exit lasi_82596_exit(void) { int i; for (i=0; i<MAX_DRIVERS; i++) { struct i596_private *lp; struct net_device *netdevice; netdevice = netdevs[i]; if (!netdevice) continue; unregister_netdev(netdevice); lp = netdevice->priv; dma_free_noncoherent(lp->dev, sizeof(struct i596_private), (void *)netdevice->mem_start, lp->dma_addr); free_netdev(netdevice); } num_drivers = 0; unregister_parisc_driver(&lan_driver); } module_exit(lasi_82596_exit); |