linux/drivers/net/tokenring/smctr.c
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   1/*
   2 *  smctr.c: A network driver for the SMC Token Ring Adapters.
   3 *
   4 *  Written by Jay Schulist <jschlst@samba.org>
   5 *
   6 *  This software may be used and distributed according to the terms
   7 *  of the GNU General Public License, incorporated herein by reference.
   8 *
   9 *  This device driver works with the following SMC adapters:
  10 *      - SMC TokenCard Elite   (8115T, chips 825/584)
  11 *      - SMC TokenCard Elite/A MCA (8115T/A, chips 825/594)
  12 *
  13 *  Source(s):
  14 *      - SMC TokenCard SDK.
  15 *
  16 *  Maintainer(s):
  17 *    JS        Jay Schulist <jschlst@samba.org>
  18 *
  19 * Changes:
  20 *    07102000          JS      Fixed a timing problem in smctr_wait_cmd();
  21 *                              Also added a bit more discriptive error msgs.
  22 *    07122000          JS      Fixed problem with detecting a card with
  23 *                              module io/irq/mem specified.
  24 *
  25 *  To do:
  26 *    1. Multicast support.
  27 *
  28 *  Initial 2.5 cleanup Alan Cox <alan@redhat.com>  2002/10/28
  29 */
  30
  31#include <linux/module.h>
  32#include <linux/kernel.h>
  33#include <linux/types.h>
  34#include <linux/fcntl.h>
  35#include <linux/interrupt.h>
  36#include <linux/ptrace.h>
  37#include <linux/ioport.h>
  38#include <linux/in.h>
  39#include <linux/slab.h>
  40#include <linux/string.h>
  41#include <linux/time.h>
  42#include <linux/errno.h>
  43#include <linux/init.h>
  44#include <linux/mca-legacy.h>
  45#include <linux/delay.h>
  46#include <linux/netdevice.h>
  47#include <linux/etherdevice.h>
  48#include <linux/skbuff.h>
  49#include <linux/trdevice.h>
  50#include <linux/bitops.h>
  51
  52#include <asm/system.h>
  53#include <asm/io.h>
  54#include <asm/dma.h>
  55#include <asm/irq.h>
  56
  57#if BITS_PER_LONG == 64
  58#error FIXME: driver does not support 64-bit platforms
  59#endif
  60
  61#include "smctr.h"               /* Our Stuff */
  62#include "smctr_firmware.h"      /* SMC adapter firmware */
  63
  64static char version[] __initdata = KERN_INFO "smctr.c: v1.4 7/12/00 by jschlst@samba.org\n";
  65static const char cardname[] = "smctr";
  66
  67
  68#define SMCTR_IO_EXTENT   20
  69
  70#ifdef CONFIG_MCA_LEGACY
  71static unsigned int smctr_posid = 0x6ec6;
  72#endif
  73
  74static int ringspeed;
  75
  76/* SMC Name of the Adapter. */
  77static char smctr_name[] = "SMC TokenCard";
  78static char *smctr_model = "Unknown";
  79
  80/* Use 0 for production, 1 for verification, 2 for debug, and
  81 * 3 for very verbose debug.
  82 */
  83#ifndef SMCTR_DEBUG
  84#define SMCTR_DEBUG 1
  85#endif
  86static unsigned int smctr_debug = SMCTR_DEBUG;
  87
  88/* smctr.c prototypes and functions are arranged alphabeticly 
  89 * for clearity, maintainability and pure old fashion fun. 
  90 */
  91/* A */
  92static int smctr_alloc_shared_memory(struct net_device *dev);
  93
  94/* B */
  95static int smctr_bypass_state(struct net_device *dev);
  96
  97/* C */
  98static int smctr_checksum_firmware(struct net_device *dev);
  99static int __init smctr_chk_isa(struct net_device *dev);
 100static int smctr_chg_rx_mask(struct net_device *dev);
 101static int smctr_clear_int(struct net_device *dev);
 102static int smctr_clear_trc_reset(int ioaddr);
 103static int smctr_close(struct net_device *dev);
 104
 105/* D */
 106static int smctr_decode_firmware(struct net_device *dev);
 107static int smctr_disable_16bit(struct net_device *dev);
 108static int smctr_disable_adapter_ctrl_store(struct net_device *dev);
 109static int smctr_disable_bic_int(struct net_device *dev);
 110
 111/* E */
 112static int smctr_enable_16bit(struct net_device *dev);
 113static int smctr_enable_adapter_ctrl_store(struct net_device *dev);
 114static int smctr_enable_adapter_ram(struct net_device *dev);
 115static int smctr_enable_bic_int(struct net_device *dev);
 116
 117/* G */
 118static int __init smctr_get_boardid(struct net_device *dev, int mca);
 119static int smctr_get_group_address(struct net_device *dev);
 120static int smctr_get_functional_address(struct net_device *dev);
 121static unsigned int smctr_get_num_rx_bdbs(struct net_device *dev);
 122static int smctr_get_physical_drop_number(struct net_device *dev);
 123static __u8 *smctr_get_rx_pointer(struct net_device *dev, short queue);
 124static int smctr_get_station_id(struct net_device *dev);
 125static struct net_device_stats *smctr_get_stats(struct net_device *dev);
 126static FCBlock *smctr_get_tx_fcb(struct net_device *dev, __u16 queue,
 127        __u16 bytes_count);
 128static int smctr_get_upstream_neighbor_addr(struct net_device *dev);
 129
 130/* H */
 131static int smctr_hardware_send_packet(struct net_device *dev,
 132        struct net_local *tp);
 133/* I */
 134static int smctr_init_acbs(struct net_device *dev);
 135static int smctr_init_adapter(struct net_device *dev);
 136static int smctr_init_card_real(struct net_device *dev);
 137static int smctr_init_rx_bdbs(struct net_device *dev);
 138static int smctr_init_rx_fcbs(struct net_device *dev);
 139static int smctr_init_shared_memory(struct net_device *dev);
 140static int smctr_init_tx_bdbs(struct net_device *dev);
 141static int smctr_init_tx_fcbs(struct net_device *dev);
 142static int smctr_internal_self_test(struct net_device *dev);
 143static irqreturn_t smctr_interrupt(int irq, void *dev_id);
 144static int smctr_issue_enable_int_cmd(struct net_device *dev,
 145        __u16 interrupt_enable_mask);
 146static int smctr_issue_int_ack(struct net_device *dev, __u16 iack_code,
 147        __u16 ibits);
 148static int smctr_issue_init_timers_cmd(struct net_device *dev);
 149static int smctr_issue_init_txrx_cmd(struct net_device *dev);
 150static int smctr_issue_insert_cmd(struct net_device *dev);
 151static int smctr_issue_read_ring_status_cmd(struct net_device *dev);
 152static int smctr_issue_read_word_cmd(struct net_device *dev, __u16 aword_cnt);
 153static int smctr_issue_remove_cmd(struct net_device *dev);
 154static int smctr_issue_resume_acb_cmd(struct net_device *dev);
 155static int smctr_issue_resume_rx_bdb_cmd(struct net_device *dev, __u16 queue);
 156static int smctr_issue_resume_rx_fcb_cmd(struct net_device *dev, __u16 queue);
 157static int smctr_issue_resume_tx_fcb_cmd(struct net_device *dev, __u16 queue);
 158static int smctr_issue_test_internal_rom_cmd(struct net_device *dev);
 159static int smctr_issue_test_hic_cmd(struct net_device *dev);
 160static int smctr_issue_test_mac_reg_cmd(struct net_device *dev);
 161static int smctr_issue_trc_loopback_cmd(struct net_device *dev);
 162static int smctr_issue_tri_loopback_cmd(struct net_device *dev);
 163static int smctr_issue_write_byte_cmd(struct net_device *dev,
 164        short aword_cnt, void *byte);
 165static int smctr_issue_write_word_cmd(struct net_device *dev,
 166        short aword_cnt, void *word);
 167
 168/* J */
 169static int smctr_join_complete_state(struct net_device *dev);
 170
 171/* L */
 172static int smctr_link_tx_fcbs_to_bdbs(struct net_device *dev);
 173static int smctr_load_firmware(struct net_device *dev);
 174static int smctr_load_node_addr(struct net_device *dev);
 175static int smctr_lobe_media_test(struct net_device *dev);
 176static int smctr_lobe_media_test_cmd(struct net_device *dev);
 177static int smctr_lobe_media_test_state(struct net_device *dev);
 178
 179/* M */
 180static int smctr_make_8025_hdr(struct net_device *dev,
 181        MAC_HEADER *rmf, MAC_HEADER *tmf, __u16 ac_fc);
 182static int smctr_make_access_pri(struct net_device *dev,
 183        MAC_SUB_VECTOR *tsv);
 184static int smctr_make_addr_mod(struct net_device *dev, MAC_SUB_VECTOR *tsv);
 185static int smctr_make_auth_funct_class(struct net_device *dev,
 186        MAC_SUB_VECTOR *tsv);
 187static int smctr_make_corr(struct net_device *dev,
 188        MAC_SUB_VECTOR *tsv, __u16 correlator);
 189static int smctr_make_funct_addr(struct net_device *dev,
 190        MAC_SUB_VECTOR *tsv);
 191static int smctr_make_group_addr(struct net_device *dev,
 192        MAC_SUB_VECTOR *tsv);
 193static int smctr_make_phy_drop_num(struct net_device *dev,
 194        MAC_SUB_VECTOR *tsv);
 195static int smctr_make_product_id(struct net_device *dev, MAC_SUB_VECTOR *tsv);
 196static int smctr_make_station_id(struct net_device *dev, MAC_SUB_VECTOR *tsv);
 197static int smctr_make_ring_station_status(struct net_device *dev,
 198        MAC_SUB_VECTOR *tsv);
 199static int smctr_make_ring_station_version(struct net_device *dev,
 200        MAC_SUB_VECTOR *tsv);
 201static int smctr_make_tx_status_code(struct net_device *dev,
 202        MAC_SUB_VECTOR *tsv, __u16 tx_fstatus);
 203static int smctr_make_upstream_neighbor_addr(struct net_device *dev,
 204        MAC_SUB_VECTOR *tsv);
 205static int smctr_make_wrap_data(struct net_device *dev,
 206        MAC_SUB_VECTOR *tsv);
 207
 208/* O */
 209static int smctr_open(struct net_device *dev);
 210static int smctr_open_tr(struct net_device *dev);
 211
 212/* P */
 213struct net_device *smctr_probe(int unit);
 214static int __init smctr_probe1(struct net_device *dev, int ioaddr);
 215static int smctr_process_rx_packet(MAC_HEADER *rmf, __u16 size,
 216        struct net_device *dev, __u16 rx_status);
 217
 218/* R */
 219static int smctr_ram_memory_test(struct net_device *dev);
 220static int smctr_rcv_chg_param(struct net_device *dev, MAC_HEADER *rmf,
 221        __u16 *correlator);
 222static int smctr_rcv_init(struct net_device *dev, MAC_HEADER *rmf,
 223        __u16 *correlator);
 224static int smctr_rcv_tx_forward(struct net_device *dev, MAC_HEADER *rmf);
 225static int smctr_rcv_rq_addr_state_attch(struct net_device *dev,
 226        MAC_HEADER *rmf, __u16 *correlator);
 227static int smctr_rcv_unknown(struct net_device *dev, MAC_HEADER *rmf,
 228        __u16 *correlator);
 229static int smctr_reset_adapter(struct net_device *dev);
 230static int smctr_restart_tx_chain(struct net_device *dev, short queue);
 231static int smctr_ring_status_chg(struct net_device *dev);
 232static int smctr_rx_frame(struct net_device *dev);
 233
 234/* S */
 235static int smctr_send_dat(struct net_device *dev);
 236static int smctr_send_packet(struct sk_buff *skb, struct net_device *dev);
 237static int smctr_send_lobe_media_test(struct net_device *dev);
 238static int smctr_send_rpt_addr(struct net_device *dev, MAC_HEADER *rmf,
 239        __u16 correlator);
 240static int smctr_send_rpt_attch(struct net_device *dev, MAC_HEADER *rmf,
 241        __u16 correlator);
 242static int smctr_send_rpt_state(struct net_device *dev, MAC_HEADER *rmf,
 243        __u16 correlator);
 244static int smctr_send_rpt_tx_forward(struct net_device *dev,
 245        MAC_HEADER *rmf, __u16 tx_fstatus);
 246static int smctr_send_rsp(struct net_device *dev, MAC_HEADER *rmf,
 247        __u16 rcode, __u16 correlator);
 248static int smctr_send_rq_init(struct net_device *dev);
 249static int smctr_send_tx_forward(struct net_device *dev, MAC_HEADER *rmf,
 250        __u16 *tx_fstatus);
 251static int smctr_set_auth_access_pri(struct net_device *dev,
 252        MAC_SUB_VECTOR *rsv);
 253static int smctr_set_auth_funct_class(struct net_device *dev,
 254        MAC_SUB_VECTOR *rsv);
 255static int smctr_set_corr(struct net_device *dev, MAC_SUB_VECTOR *rsv,
 256        __u16 *correlator);
 257static int smctr_set_error_timer_value(struct net_device *dev,
 258        MAC_SUB_VECTOR *rsv);
 259static int smctr_set_frame_forward(struct net_device *dev,
 260        MAC_SUB_VECTOR *rsv, __u8 dc_sc);
 261static int smctr_set_local_ring_num(struct net_device *dev,
 262        MAC_SUB_VECTOR *rsv);
 263static unsigned short smctr_set_ctrl_attention(struct net_device *dev);
 264static void smctr_set_multicast_list(struct net_device *dev);
 265static int smctr_set_page(struct net_device *dev, __u8 *buf);
 266static int smctr_set_phy_drop(struct net_device *dev,
 267        MAC_SUB_VECTOR *rsv);
 268static int smctr_set_ring_speed(struct net_device *dev);
 269static int smctr_set_rx_look_ahead(struct net_device *dev);
 270static int smctr_set_trc_reset(int ioaddr);
 271static int smctr_setup_single_cmd(struct net_device *dev,
 272        __u16 command, __u16 subcommand);
 273static int smctr_setup_single_cmd_w_data(struct net_device *dev,
 274        __u16 command, __u16 subcommand);
 275static char *smctr_malloc(struct net_device *dev, __u16 size);
 276static int smctr_status_chg(struct net_device *dev);
 277
 278/* T */
 279static void smctr_timeout(struct net_device *dev);
 280static int smctr_trc_send_packet(struct net_device *dev, FCBlock *fcb,
 281        __u16 queue);
 282static __u16 smctr_tx_complete(struct net_device *dev, __u16 queue);
 283static unsigned short smctr_tx_move_frame(struct net_device *dev,
 284        struct sk_buff *skb, __u8 *pbuff, unsigned int bytes);
 285
 286/* U */
 287static int smctr_update_err_stats(struct net_device *dev);
 288static int smctr_update_rx_chain(struct net_device *dev, __u16 queue);
 289static int smctr_update_tx_chain(struct net_device *dev, FCBlock *fcb,
 290        __u16 queue);
 291
 292/* W */
 293static int smctr_wait_cmd(struct net_device *dev);
 294static int smctr_wait_while_cbusy(struct net_device *dev);
 295
 296#define TO_256_BYTE_BOUNDRY(X)  (((X + 0xff) & 0xff00) - X)
 297#define TO_PARAGRAPH_BOUNDRY(X) (((X + 0x0f) & 0xfff0) - X)
 298#define PARAGRAPH_BOUNDRY(X)    smctr_malloc(dev, TO_PARAGRAPH_BOUNDRY(X))
 299
 300/* Allocate Adapter Shared Memory.
 301 * IMPORTANT NOTE: Any changes to this function MUST be mirrored in the
 302 * function "get_num_rx_bdbs" below!!!
 303 *
 304 * Order of memory allocation:
 305 *
 306 *       0. Initial System Configuration Block Pointer
 307 *       1. System Configuration Block
 308 *       2. System Control Block
 309 *       3. Action Command Block
 310 *       4. Interrupt Status Block
 311 *
 312 *       5. MAC TX FCB'S
 313 *       6. NON-MAC TX FCB'S
 314 *       7. MAC TX BDB'S
 315 *       8. NON-MAC TX BDB'S
 316 *       9. MAC RX FCB'S
 317 *      10. NON-MAC RX FCB'S
 318 *      11. MAC RX BDB'S
 319 *      12. NON-MAC RX BDB'S
 320 *      13. MAC TX Data Buffer( 1, 256 byte buffer)
 321 *      14. MAC RX Data Buffer( 1, 256 byte buffer)
 322 *
 323 *      15. NON-MAC TX Data Buffer
 324 *      16. NON-MAC RX Data Buffer
 325 */
 326static int smctr_alloc_shared_memory(struct net_device *dev)
 327{
 328        struct net_local *tp = netdev_priv(dev);
 329
 330        if(smctr_debug > 10)
 331                printk(KERN_DEBUG "%s: smctr_alloc_shared_memory\n", dev->name);
 332
 333        /* Allocate initial System Control Block pointer.
 334         * This pointer is located in the last page, last offset - 4.
 335         */
 336        tp->iscpb_ptr = (ISCPBlock *)(tp->ram_access + ((__u32)64 * 0x400)
 337                - (long)ISCP_BLOCK_SIZE);
 338
 339        /* Allocate System Control Blocks. */
 340        tp->scgb_ptr = (SCGBlock *)smctr_malloc(dev, sizeof(SCGBlock));
 341        PARAGRAPH_BOUNDRY(tp->sh_mem_used);
 342
 343        tp->sclb_ptr = (SCLBlock *)smctr_malloc(dev, sizeof(SCLBlock));
 344        PARAGRAPH_BOUNDRY(tp->sh_mem_used);
 345
 346        tp->acb_head = (ACBlock *)smctr_malloc(dev,
 347                sizeof(ACBlock)*tp->num_acbs);
 348        PARAGRAPH_BOUNDRY(tp->sh_mem_used);
 349
 350        tp->isb_ptr = (ISBlock *)smctr_malloc(dev, sizeof(ISBlock));
 351        PARAGRAPH_BOUNDRY(tp->sh_mem_used);
 352
 353        tp->misc_command_data = (__u16 *)smctr_malloc(dev, MISC_DATA_SIZE);
 354        PARAGRAPH_BOUNDRY(tp->sh_mem_used);
 355
 356        /* Allocate transmit FCBs. */
 357        tp->tx_fcb_head[MAC_QUEUE] = (FCBlock *)smctr_malloc(dev,
 358                sizeof(FCBlock) * tp->num_tx_fcbs[MAC_QUEUE]);
 359
 360        tp->tx_fcb_head[NON_MAC_QUEUE] = (FCBlock *)smctr_malloc(dev,
 361                sizeof(FCBlock) * tp->num_tx_fcbs[NON_MAC_QUEUE]);
 362
 363        tp->tx_fcb_head[BUG_QUEUE] = (FCBlock *)smctr_malloc(dev,
 364                sizeof(FCBlock) * tp->num_tx_fcbs[BUG_QUEUE]);
 365
 366        /* Allocate transmit BDBs. */
 367        tp->tx_bdb_head[MAC_QUEUE] = (BDBlock *)smctr_malloc(dev,
 368                sizeof(BDBlock) * tp->num_tx_bdbs[MAC_QUEUE]);
 369
 370        tp->tx_bdb_head[NON_MAC_QUEUE] = (BDBlock *)smctr_malloc(dev,
 371                sizeof(BDBlock) * tp->num_tx_bdbs[NON_MAC_QUEUE]);
 372
 373        tp->tx_bdb_head[BUG_QUEUE] = (BDBlock *)smctr_malloc(dev,
 374                sizeof(BDBlock) * tp->num_tx_bdbs[BUG_QUEUE]);
 375
 376        /* Allocate receive FCBs. */
 377        tp->rx_fcb_head[MAC_QUEUE] = (FCBlock *)smctr_malloc(dev,
 378                sizeof(FCBlock) * tp->num_rx_fcbs[MAC_QUEUE]);
 379
 380        tp->rx_fcb_head[NON_MAC_QUEUE] = (FCBlock *)smctr_malloc(dev,
 381                sizeof(FCBlock) * tp->num_rx_fcbs[NON_MAC_QUEUE]);
 382
 383        /* Allocate receive BDBs. */
 384        tp->rx_bdb_head[MAC_QUEUE] = (BDBlock *)smctr_malloc(dev,
 385                sizeof(BDBlock) * tp->num_rx_bdbs[MAC_QUEUE]);
 386
 387        tp->rx_bdb_end[MAC_QUEUE] = (BDBlock *)smctr_malloc(dev, 0);
 388
 389        tp->rx_bdb_head[NON_MAC_QUEUE] = (BDBlock *)smctr_malloc(dev,
 390                sizeof(BDBlock) * tp->num_rx_bdbs[NON_MAC_QUEUE]);
 391
 392        tp->rx_bdb_end[NON_MAC_QUEUE] = (BDBlock *)smctr_malloc(dev, 0);
 393
 394        /* Allocate MAC transmit buffers.
 395         * MAC Tx Buffers doen't have to be on an ODD Boundry.
 396         */
 397        tp->tx_buff_head[MAC_QUEUE]
 398                = (__u16 *)smctr_malloc(dev, tp->tx_buff_size[MAC_QUEUE]);
 399        tp->tx_buff_curr[MAC_QUEUE] = tp->tx_buff_head[MAC_QUEUE];
 400        tp->tx_buff_end [MAC_QUEUE] = (__u16 *)smctr_malloc(dev, 0);
 401
 402        /* Allocate BUG transmit buffers. */
 403        tp->tx_buff_head[BUG_QUEUE]
 404                = (__u16 *)smctr_malloc(dev, tp->tx_buff_size[BUG_QUEUE]);
 405        tp->tx_buff_curr[BUG_QUEUE] = tp->tx_buff_head[BUG_QUEUE];
 406        tp->tx_buff_end[BUG_QUEUE] = (__u16 *)smctr_malloc(dev, 0);
 407
 408        /* Allocate MAC receive data buffers.
 409         * MAC Rx buffer doesn't have to be on a 256 byte boundary.
 410         */
 411        tp->rx_buff_head[MAC_QUEUE] = (__u16 *)smctr_malloc(dev,
 412                RX_DATA_BUFFER_SIZE * tp->num_rx_bdbs[MAC_QUEUE]);
 413        tp->rx_buff_end[MAC_QUEUE] = (__u16 *)smctr_malloc(dev, 0);
 414
 415        /* Allocate Non-MAC transmit buffers.
 416         * ?? For maximum Netware performance, put Tx Buffers on
 417         * ODD Boundry and then restore malloc to Even Boundrys.
 418         */
 419        smctr_malloc(dev, 1L);
 420        tp->tx_buff_head[NON_MAC_QUEUE]
 421                = (__u16 *)smctr_malloc(dev, tp->tx_buff_size[NON_MAC_QUEUE]);
 422        tp->tx_buff_curr[NON_MAC_QUEUE] = tp->tx_buff_head[NON_MAC_QUEUE];
 423        tp->tx_buff_end [NON_MAC_QUEUE] = (__u16 *)smctr_malloc(dev, 0);
 424        smctr_malloc(dev, 1L);
 425
 426        /* Allocate Non-MAC receive data buffers.
 427         * To guarantee a minimum of 256 contigous memory to
 428         * UM_Receive_Packet's lookahead pointer, before a page
 429         * change or ring end is encountered, place each rx buffer on
 430         * a 256 byte boundary.
 431         */
 432        smctr_malloc(dev, TO_256_BYTE_BOUNDRY(tp->sh_mem_used));
 433        tp->rx_buff_head[NON_MAC_QUEUE] = (__u16 *)smctr_malloc(dev,
 434                RX_DATA_BUFFER_SIZE * tp->num_rx_bdbs[NON_MAC_QUEUE]);
 435        tp->rx_buff_end[NON_MAC_QUEUE] = (__u16 *)smctr_malloc(dev, 0);
 436
 437        return (0);
 438}
 439
 440/* Enter Bypass state. */
 441static int smctr_bypass_state(struct net_device *dev)
 442{
 443        int err;
 444
 445        if(smctr_debug > 10)
 446                printk(KERN_DEBUG "%s: smctr_bypass_state\n", dev->name);
 447
 448        err = smctr_setup_single_cmd(dev, ACB_CMD_CHANGE_JOIN_STATE, JS_BYPASS_STATE);
 449
 450        return (err);
 451}
 452
 453static int smctr_checksum_firmware(struct net_device *dev)
 454{
 455        struct net_local *tp = netdev_priv(dev);
 456        __u16 i, checksum = 0;
 457
 458        if(smctr_debug > 10)
 459                printk(KERN_DEBUG "%s: smctr_checksum_firmware\n", dev->name);
 460
 461        smctr_enable_adapter_ctrl_store(dev);
 462
 463        for(i = 0; i < CS_RAM_SIZE; i += 2)
 464                checksum += *((__u16 *)(tp->ram_access + i));
 465
 466        tp->microcode_version = *(__u16 *)(tp->ram_access
 467                + CS_RAM_VERSION_OFFSET);
 468        tp->microcode_version >>= 8;
 469
 470        smctr_disable_adapter_ctrl_store(dev);
 471
 472        if(checksum)
 473                return (checksum);
 474
 475        return (0);
 476}
 477
 478static int __init smctr_chk_mca(struct net_device *dev)
 479{
 480#ifdef CONFIG_MCA_LEGACY
 481        struct net_local *tp = netdev_priv(dev);
 482        int current_slot;
 483        __u8 r1, r2, r3, r4, r5;
 484
 485        current_slot = mca_find_unused_adapter(smctr_posid, 0);
 486        if(current_slot == MCA_NOTFOUND)
 487                return (-ENODEV);
 488
 489        mca_set_adapter_name(current_slot, smctr_name);
 490        mca_mark_as_used(current_slot);
 491        tp->slot_num = current_slot;
 492
 493        r1 = mca_read_stored_pos(tp->slot_num, 2);
 494        r2 = mca_read_stored_pos(tp->slot_num, 3);
 495
 496        if(tp->slot_num)
 497                outb(CNFG_POS_CONTROL_REG, (__u8)((tp->slot_num - 1) | CNFG_SLOT_ENABLE_BIT));
 498        else
 499                outb(CNFG_POS_CONTROL_REG, (__u8)((tp->slot_num) | CNFG_SLOT_ENABLE_BIT));
 500
 501        r1 = inb(CNFG_POS_REG1);
 502        r2 = inb(CNFG_POS_REG0);
 503
 504        tp->bic_type = BIC_594_CHIP;
 505
 506        /* IO */
 507        r2 = mca_read_stored_pos(tp->slot_num, 2);
 508        r2 &= 0xF0;
 509        dev->base_addr = ((__u16)r2 << 8) + (__u16)0x800;
 510        request_region(dev->base_addr, SMCTR_IO_EXTENT, smctr_name);
 511
 512        /* IRQ */
 513        r5 = mca_read_stored_pos(tp->slot_num, 5);
 514        r5 &= 0xC;
 515        switch(r5)
 516        {
 517                case 0:
 518                        dev->irq = 3;
 519                        break;
 520
 521                case 0x4:
 522                        dev->irq = 4;
 523                        break;
 524
 525                case 0x8:
 526                        dev->irq = 10;
 527                        break;
 528
 529                default:
 530                        dev->irq = 15;
 531                        break;
 532        }
 533        if (request_irq(dev->irq, smctr_interrupt, IRQF_SHARED, smctr_name, dev)) {
 534                release_region(dev->base_addr, SMCTR_IO_EXTENT);
 535                return -ENODEV;
 536        }
 537
 538        /* Get RAM base */
 539        r3 = mca_read_stored_pos(tp->slot_num, 3);
 540        tp->ram_base = ((__u32)(r3 & 0x7) << 13) + 0x0C0000;
 541        if (r3 & 0x8)
 542                tp->ram_base += 0x010000;
 543        if (r3 & 0x80)
 544                tp->ram_base += 0xF00000;
 545
 546        /* Get Ram Size */
 547        r3 &= 0x30;
 548        r3 >>= 4;
 549
 550        tp->ram_usable = (__u16)CNFG_SIZE_8KB << r3;
 551        tp->ram_size = (__u16)CNFG_SIZE_64KB;
 552        tp->board_id |= TOKEN_MEDIA;
 553
 554        r4 = mca_read_stored_pos(tp->slot_num, 4);
 555        tp->rom_base = ((__u32)(r4 & 0x7) << 13) + 0x0C0000;
 556        if (r4 & 0x8)
 557                tp->rom_base += 0x010000;
 558
 559        /* Get ROM size. */
 560        r4 >>= 4;
 561        switch (r4) {
 562                case 0:
 563                        tp->rom_size = CNFG_SIZE_8KB;
 564                        break;
 565                case 1:
 566                        tp->rom_size = CNFG_SIZE_16KB;
 567                        break;
 568                case 2:
 569                        tp->rom_size = CNFG_SIZE_32KB;
 570                        break;
 571                default:
 572                        tp->rom_size = ROM_DISABLE;
 573        }
 574
 575        /* Get Media Type. */
 576        r5 = mca_read_stored_pos(tp->slot_num, 5);
 577        r5 &= CNFG_MEDIA_TYPE_MASK;
 578        switch(r5)
 579        {
 580                case (0):
 581                        tp->media_type = MEDIA_STP_4;
 582                        break;
 583
 584                case (1):
 585                        tp->media_type = MEDIA_STP_16;
 586                        break;
 587
 588                case (3):
 589                        tp->media_type = MEDIA_UTP_16;
 590                        break;
 591
 592                default:
 593                        tp->media_type = MEDIA_UTP_4;
 594                        break;
 595        }
 596        tp->media_menu = 14;
 597
 598        r2 = mca_read_stored_pos(tp->slot_num, 2);
 599        if(!(r2 & 0x02))
 600                tp->mode_bits |= EARLY_TOKEN_REL;
 601
 602        /* Disable slot */
 603        outb(CNFG_POS_CONTROL_REG, 0);
 604
 605        tp->board_id = smctr_get_boardid(dev, 1);
 606        switch(tp->board_id & 0xffff)
 607        {
 608                case WD8115TA:
 609                        smctr_model = "8115T/A";
 610                        break;
 611
 612                case WD8115T:
 613                        if(tp->extra_info & CHIP_REV_MASK)
 614                                smctr_model = "8115T rev XE";
 615                        else
 616                                smctr_model = "8115T rev XD";
 617                        break;
 618
 619                default:
 620                        smctr_model = "Unknown";
 621                        break;
 622        }
 623
 624        return (0);
 625#else
 626        return (-1);
 627#endif /* CONFIG_MCA_LEGACY */
 628}
 629
 630static int smctr_chg_rx_mask(struct net_device *dev)
 631{
 632        struct net_local *tp = netdev_priv(dev);
 633        int err = 0;
 634
 635        if(smctr_debug > 10)
 636                printk(KERN_DEBUG "%s: smctr_chg_rx_mask\n", dev->name);
 637
 638        smctr_enable_16bit(dev);
 639        smctr_set_page(dev, (__u8 *)tp->ram_access);
 640
 641        if(tp->mode_bits & LOOPING_MODE_MASK)
 642                tp->config_word0 |= RX_OWN_BIT;
 643        else
 644                tp->config_word0 &= ~RX_OWN_BIT;
 645
 646        if(tp->receive_mask & PROMISCUOUS_MODE)
 647                tp->config_word0 |= PROMISCUOUS_BIT;
 648        else
 649                tp->config_word0 &= ~PROMISCUOUS_BIT;
 650
 651        if(tp->receive_mask & ACCEPT_ERR_PACKETS)
 652                tp->config_word0 |= SAVBAD_BIT;
 653        else
 654                tp->config_word0 &= ~SAVBAD_BIT;
 655
 656        if(tp->receive_mask & ACCEPT_ATT_MAC_FRAMES)
 657                tp->config_word0 |= RXATMAC;
 658        else
 659                tp->config_word0 &= ~RXATMAC;
 660
 661        if(tp->receive_mask & ACCEPT_MULTI_PROM)
 662                tp->config_word1 |= MULTICAST_ADDRESS_BIT;
 663        else
 664                tp->config_word1 &= ~MULTICAST_ADDRESS_BIT;
 665
 666        if(tp->receive_mask & ACCEPT_SOURCE_ROUTING_SPANNING)
 667                tp->config_word1 |= SOURCE_ROUTING_SPANNING_BITS;
 668        else
 669        {
 670                if(tp->receive_mask & ACCEPT_SOURCE_ROUTING)
 671                        tp->config_word1 |= SOURCE_ROUTING_EXPLORER_BIT;
 672                else
 673                        tp->config_word1 &= ~SOURCE_ROUTING_SPANNING_BITS;
 674        }
 675
 676        if((err = smctr_issue_write_word_cmd(dev, RW_CONFIG_REGISTER_0,
 677                &tp->config_word0)))
 678        {
 679                return (err);
 680        }
 681
 682        if((err = smctr_issue_write_word_cmd(dev, RW_CONFIG_REGISTER_1,
 683                &tp->config_word1)))
 684        {
 685                return (err);
 686        }
 687
 688        smctr_disable_16bit(dev);
 689
 690        return (0);
 691}
 692
 693static int smctr_clear_int(struct net_device *dev)
 694{
 695        struct net_local *tp = netdev_priv(dev);
 696
 697        outb((tp->trc_mask | CSR_CLRTINT), dev->base_addr + CSR);
 698
 699        return (0);
 700}
 701
 702static int smctr_clear_trc_reset(int ioaddr)
 703{
 704        __u8 r;
 705
 706        r = inb(ioaddr + MSR);
 707        outb(~MSR_RST & r, ioaddr + MSR);
 708
 709        return (0);
 710}
 711
 712/*
 713 * The inverse routine to smctr_open().
 714 */
 715static int smctr_close(struct net_device *dev)
 716{
 717        struct net_local *tp = netdev_priv(dev);
 718        struct sk_buff *skb;
 719        int err;
 720
 721        netif_stop_queue(dev);
 722        
 723        tp->cleanup = 1;
 724
 725        /* Check to see if adapter is already in a closed state. */
 726        if(tp->status != OPEN)
 727                return (0);
 728
 729        smctr_enable_16bit(dev);
 730        smctr_set_page(dev, (__u8 *)tp->ram_access);
 731
 732        if((err = smctr_issue_remove_cmd(dev)))
 733        {
 734                smctr_disable_16bit(dev);
 735                return (err);
 736        }
 737
 738        for(;;)
 739        {
 740                skb = skb_dequeue(&tp->SendSkbQueue);
 741                if(skb == NULL)
 742                        break;
 743                tp->QueueSkb++;
 744                dev_kfree_skb(skb);
 745        }
 746
 747
 748        return (0);
 749}
 750
 751static int smctr_decode_firmware(struct net_device *dev)
 752{
 753        struct net_local *tp = netdev_priv(dev);
 754        short bit = 0x80, shift = 12;
 755        DECODE_TREE_NODE *tree;
 756        short branch, tsize;
 757        __u16 buff = 0;
 758        long weight;
 759        __u8 *ucode;
 760        __u16 *mem;
 761
 762        if(smctr_debug > 10)
 763                printk(KERN_DEBUG "%s: smctr_decode_firmware\n", dev->name);
 764
 765        weight  = *(long *)(tp->ptr_ucode + WEIGHT_OFFSET);
 766        tsize   = *(__u8 *)(tp->ptr_ucode + TREE_SIZE_OFFSET);
 767        tree    = (DECODE_TREE_NODE *)(tp->ptr_ucode + TREE_OFFSET);
 768        ucode   = (__u8 *)(tp->ptr_ucode + TREE_OFFSET
 769                        + (tsize * sizeof(DECODE_TREE_NODE)));
 770        mem     = (__u16 *)(tp->ram_access);
 771
 772        while(weight)
 773        {
 774                branch = ROOT;
 775                while((tree + branch)->tag != LEAF && weight)
 776                {
 777                        branch = *ucode & bit ? (tree + branch)->llink
 778                                : (tree + branch)->rlink;
 779
 780                        bit >>= 1;
 781                        weight--;
 782
 783                        if(bit == 0)
 784                        {
 785                                bit = 0x80;
 786                                ucode++;
 787                        }
 788                }
 789
 790                buff |= (tree + branch)->info << shift;
 791                shift -= 4;
 792
 793                if(shift < 0)
 794                {
 795                        *(mem++) = SWAP_BYTES(buff);
 796                        buff    = 0;
 797                        shift   = 12;
 798                }
 799        }
 800
 801        /* The following assumes the Control Store Memory has
 802         * been initialized to zero. If the last partial word
 803         * is zero, it will not be written.
 804         */
 805        if(buff)
 806                *(mem++) = SWAP_BYTES(buff);
 807
 808        return (0);
 809}
 810
 811static int smctr_disable_16bit(struct net_device *dev)
 812{
 813        return (0);
 814}
 815
 816/*
 817 * On Exit, Adapter is:
 818 * 1. TRC is in a reset state and un-initialized.
 819 * 2. Adapter memory is enabled.
 820 * 3. Control Store memory is out of context (-WCSS is 1).
 821 */
 822static int smctr_disable_adapter_ctrl_store(struct net_device *dev)
 823{
 824        struct net_local *tp = netdev_priv(dev);
 825        int ioaddr = dev->base_addr;
 826
 827        if(smctr_debug > 10)
 828                printk(KERN_DEBUG "%s: smctr_disable_adapter_ctrl_store\n", dev->name);
 829
 830        tp->trc_mask |= CSR_WCSS;
 831        outb(tp->trc_mask, ioaddr + CSR);
 832
 833        return (0);
 834}
 835
 836static int smctr_disable_bic_int(struct net_device *dev)
 837{
 838        struct net_local *tp = netdev_priv(dev);
 839        int ioaddr = dev->base_addr;
 840
 841        tp->trc_mask = CSR_MSK_ALL | CSR_MSKCBUSY
 842                | CSR_MSKTINT | CSR_WCSS;
 843        outb(tp->trc_mask, ioaddr + CSR);
 844
 845        return (0);
 846}
 847
 848static int smctr_enable_16bit(struct net_device *dev)
 849{
 850        struct net_local *tp = netdev_priv(dev);
 851        __u8    r;
 852
 853        if(tp->adapter_bus == BUS_ISA16_TYPE)
 854        {
 855                r = inb(dev->base_addr + LAAR);
 856                outb((r | LAAR_MEM16ENB), dev->base_addr + LAAR);
 857        }
 858
 859        return (0);
 860}
 861
 862/*
 863 * To enable the adapter control store memory:
 864 * 1. Adapter must be in a RESET state.
 865 * 2. Adapter memory must be enabled.
 866 * 3. Control Store Memory is in context (-WCSS is 0).
 867 */
 868static int smctr_enable_adapter_ctrl_store(struct net_device *dev)
 869{
 870        struct net_local *tp = netdev_priv(dev);
 871        int ioaddr = dev->base_addr;
 872
 873        if(smctr_debug > 10)
 874                printk(KERN_DEBUG "%s: smctr_enable_adapter_ctrl_store\n", dev->name);
 875
 876        smctr_set_trc_reset(ioaddr);
 877        smctr_enable_adapter_ram(dev);
 878
 879        tp->trc_mask &= ~CSR_WCSS;
 880        outb(tp->trc_mask, ioaddr + CSR);
 881
 882        return (0);
 883}
 884
 885static int smctr_enable_adapter_ram(struct net_device *dev)
 886{
 887        int ioaddr = dev->base_addr;
 888        __u8 r;
 889
 890        if(smctr_debug > 10)
 891                printk(KERN_DEBUG "%s: smctr_enable_adapter_ram\n", dev->name);
 892
 893        r = inb(ioaddr + MSR);
 894        outb(MSR_MEMB | r, ioaddr + MSR);
 895
 896        return (0);
 897}
 898
 899static int smctr_enable_bic_int(struct net_device *dev)
 900{
 901        struct net_local *tp = netdev_priv(dev);
 902        int ioaddr = dev->base_addr;
 903        __u8 r;
 904
 905        switch(tp->bic_type)
 906        {
 907                case (BIC_584_CHIP):
 908                        tp->trc_mask = CSR_MSKCBUSY | CSR_WCSS;
 909                        outb(tp->trc_mask, ioaddr + CSR);
 910                        r = inb(ioaddr + IRR);
 911                        outb(r | IRR_IEN, ioaddr + IRR);
 912                        break;
 913
 914                case (BIC_594_CHIP):
 915                        tp->trc_mask = CSR_MSKCBUSY | CSR_WCSS;
 916                        outb(tp->trc_mask, ioaddr + CSR);
 917                        r = inb(ioaddr + IMCCR);
 918                        outb(r | IMCCR_EIL, ioaddr + IMCCR);
 919                        break;
 920        }
 921
 922        return (0);
 923}
 924
 925static int __init smctr_chk_isa(struct net_device *dev)
 926{
 927        struct net_local *tp = netdev_priv(dev);
 928        int ioaddr = dev->base_addr;
 929        __u8 r1, r2, b, chksum = 0;
 930        __u16 r;
 931        int i;
 932        int err = -ENODEV;
 933
 934        if(smctr_debug > 10)
 935                printk(KERN_DEBUG "%s: smctr_chk_isa %#4x\n", dev->name, ioaddr);
 936
 937        if((ioaddr & 0x1F) != 0)
 938                goto out;
 939
 940        /* Grab the region so that no one else tries to probe our ioports. */
 941        if (!request_region(ioaddr, SMCTR_IO_EXTENT, smctr_name)) {
 942                err = -EBUSY;
 943                goto out;
 944        }
 945
 946        /* Checksum SMC node address */
 947        for(i = 0; i < 8; i++)
 948        {
 949                b = inb(ioaddr + LAR0 + i);
 950                chksum += b;
 951        }
 952
 953        if (chksum != NODE_ADDR_CKSUM)
 954                goto out2;
 955
 956        b = inb(ioaddr + BDID);
 957        if(b != BRD_ID_8115T)
 958        {
 959                printk(KERN_ERR "%s: The adapter found is not supported\n", dev->name);
 960                goto out2;
 961        }
 962
 963        /* Check for 8115T Board ID */
 964        r2 = 0;
 965        for(r = 0; r < 8; r++)
 966        {
 967            r1 = inb(ioaddr + 0x8 + r);
 968            r2 += r1;
 969        }
 970
 971        /* value of RegF adds up the sum to 0xFF */
 972        if((r2 != 0xFF) && (r2 != 0xEE))
 973                goto out2;
 974
 975        /* Get adapter ID */
 976        tp->board_id = smctr_get_boardid(dev, 0);
 977        switch(tp->board_id & 0xffff)
 978        {
 979                case WD8115TA:
 980                        smctr_model = "8115T/A";
 981                        break;
 982
 983                case WD8115T:
 984                        if(tp->extra_info & CHIP_REV_MASK)
 985                                smctr_model = "8115T rev XE";
 986                        else
 987                                smctr_model = "8115T rev XD";
 988                        break;
 989
 990                default:
 991                        smctr_model = "Unknown";
 992                        break;
 993        }
 994
 995        /* Store BIC type. */
 996        tp->bic_type = BIC_584_CHIP;
 997        tp->nic_type = NIC_825_CHIP;
 998
 999        /* Copy Ram Size */
1000        tp->ram_usable  = CNFG_SIZE_16KB;
1001        tp->ram_size    = CNFG_SIZE_64KB;
1002
1003        /* Get 58x Ram Base */
1004        r1 = inb(ioaddr);
1005        r1 &= 0x3F;
1006
1007        r2 = inb(ioaddr + CNFG_LAAR_584);
1008        r2 &= CNFG_LAAR_MASK;
1009        r2 <<= 3;
1010        r2 |= ((r1 & 0x38) >> 3);
1011
1012        tp->ram_base = ((__u32)r2 << 16) + (((__u32)(r1 & 0x7)) << 13);
1013
1014        /* Get 584 Irq */
1015        r1 = 0;
1016        r1 = inb(ioaddr + CNFG_ICR_583);
1017        r1 &= CNFG_ICR_IR2_584;
1018
1019        r2 = inb(ioaddr + CNFG_IRR_583);
1020        r2 &= CNFG_IRR_IRQS;     /* 0x60 */
1021        r2 >>= 5;
1022
1023        switch(r2)
1024        {
1025                case 0:
1026                        if(r1 == 0)
1027                                dev->irq = 2;
1028                        else
1029                                dev->irq = 10;
1030                        break;
1031
1032                case 1:
1033                        if(r1 == 0)
1034                                dev->irq = 3;
1035                        else
1036                                dev->irq = 11;
1037                        break;
1038
1039                case 2:
1040                        if(r1 == 0)
1041                        {
1042                                if(tp->extra_info & ALTERNATE_IRQ_BIT)
1043                                        dev->irq = 5;
1044                                else
1045                                        dev->irq = 4;
1046                        }
1047                        else
1048                                dev->irq = 15;
1049                        break;
1050
1051                case 3:
1052                        if(r1 == 0)
1053                                dev->irq = 7;
1054                        else
1055                                dev->irq = 4;
1056                        break;
1057
1058                default:
1059                        printk(KERN_ERR "%s: No IRQ found aborting\n", dev->name);
1060                        goto out2;
1061         }
1062
1063        if (request_irq(dev->irq, smctr_interrupt, IRQF_SHARED, smctr_name, dev))
1064                goto out2;
1065
1066        /* Get 58x Rom Base */
1067        r1 = inb(ioaddr + CNFG_BIO_583);
1068        r1 &= 0x3E;
1069        r1 |= 0x40;
1070
1071        tp->rom_base = (__u32)r1 << 13;
1072
1073        /* Get 58x Rom Size */
1074        r1 = inb(ioaddr + CNFG_BIO_583);
1075        r1 &= 0xC0;
1076        if(r1 == 0)
1077                tp->rom_size = ROM_DISABLE;
1078        else
1079        {
1080                r1 >>= 6;
1081                tp->rom_size = (__u16)CNFG_SIZE_8KB << r1;
1082        }
1083
1084        /* Get 58x Boot Status */
1085        r1 = inb(ioaddr + CNFG_GP2);
1086
1087        tp->mode_bits &= (~BOOT_STATUS_MASK);
1088
1089        if(r1 & CNFG_GP2_BOOT_NIBBLE)
1090                tp->mode_bits |= BOOT_TYPE_1;
1091
1092        /* Get 58x Zero Wait State */
1093        tp->mode_bits &= (~ZERO_WAIT_STATE_MASK);
1094
1095        r1 = inb(ioaddr + CNFG_IRR_583);
1096
1097        if(r1 & CNFG_IRR_ZWS)
1098                 tp->mode_bits |= ZERO_WAIT_STATE_8_BIT;
1099
1100        if(tp->board_id & BOARD_16BIT)
1101        {
1102                r1 = inb(ioaddr + CNFG_LAAR_584);
1103
1104                if(r1 & CNFG_LAAR_ZWS)
1105                        tp->mode_bits |= ZERO_WAIT_STATE_16_BIT;
1106        }
1107
1108        /* Get 584 Media Menu */
1109        tp->media_menu = 14;
1110        r1 = inb(ioaddr + CNFG_IRR_583);
1111
1112        tp->mode_bits &= 0xf8ff;       /* (~CNFG_INTERFACE_TYPE_MASK) */
1113        if((tp->board_id & TOKEN_MEDIA) == TOKEN_MEDIA)
1114        {
1115                /* Get Advanced Features */
1116                if(((r1 & 0x6) >> 1) == 0x3)
1117                        tp->media_type |= MEDIA_UTP_16;
1118                else
1119                {
1120                        if(((r1 & 0x6) >> 1) == 0x2)
1121                                tp->media_type |= MEDIA_STP_16;
1122                        else
1123                        {
1124                                if(((r1 & 0x6) >> 1) == 0x1)
1125                                        tp->media_type |= MEDIA_UTP_4;
1126
1127                                else
1128                                        tp->media_type |= MEDIA_STP_4;
1129                        }
1130                }
1131
1132                r1 = inb(ioaddr + CNFG_GP2);
1133                if(!(r1 & 0x2) )           /* GP2_ETRD */
1134                        tp->mode_bits |= EARLY_TOKEN_REL;
1135
1136                /* see if the chip is corrupted
1137                if(smctr_read_584_chksum(ioaddr))
1138                {
1139                        printk(KERN_ERR "%s: EEPROM Checksum Failure\n", dev->name);
1140                        free_irq(dev->irq, dev);
1141                        goto out2;
1142                }
1143                */
1144        }
1145
1146        return (0);
1147
1148out2:
1149        release_region(ioaddr, SMCTR_IO_EXTENT);
1150out:
1151        return err;
1152}
1153
1154static int __init smctr_get_boardid(struct net_device *dev, int mca)
1155{
1156        struct net_local *tp = netdev_priv(dev);
1157        int ioaddr = dev->base_addr;
1158        __u8 r, r1, IdByte;
1159        __u16 BoardIdMask;
1160
1161        tp->board_id = BoardIdMask = 0;
1162
1163        if(mca)
1164        {
1165                BoardIdMask |= (MICROCHANNEL+INTERFACE_CHIP+TOKEN_MEDIA+PAGED_RAM+BOARD_16BIT);
1166                tp->extra_info |= (INTERFACE_594_CHIP+RAM_SIZE_64K+NIC_825_BIT+ALTERNATE_IRQ_BIT+SLOT_16BIT);
1167        }
1168        else
1169        {
1170                BoardIdMask|=(INTERFACE_CHIP+TOKEN_MEDIA+PAGED_RAM+BOARD_16BIT);
1171                tp->extra_info |= (INTERFACE_584_CHIP + RAM_SIZE_64K
1172                        + NIC_825_BIT + ALTERNATE_IRQ_BIT);
1173        }
1174
1175        if(!mca)
1176        {
1177                r = inb(ioaddr + BID_REG_1);
1178                r &= 0x0c;
1179                outb(r, ioaddr + BID_REG_1);
1180                r = inb(ioaddr + BID_REG_1);
1181
1182                if(r & BID_SIXTEEN_BIT_BIT)
1183                {
1184                        tp->extra_info |= SLOT_16BIT;
1185                        tp->adapter_bus = BUS_ISA16_TYPE;
1186                }
1187                else
1188                        tp->adapter_bus = BUS_ISA8_TYPE;
1189        }
1190        else
1191                tp->adapter_bus = BUS_MCA_TYPE;
1192
1193        /* Get Board Id Byte */
1194        IdByte = inb(ioaddr + BID_BOARD_ID_BYTE);
1195
1196        /* if Major version > 1.0 then
1197         *      return;
1198         */
1199        if(IdByte & 0xF8)
1200                return (-1);
1201
1202        r1 = inb(ioaddr + BID_REG_1);
1203        r1 &= BID_ICR_MASK;
1204        r1 |= BID_OTHER_BIT;
1205
1206        outb(r1, ioaddr + BID_REG_1);
1207        r1 = inb(ioaddr + BID_REG_3);
1208
1209        r1 &= BID_EAR_MASK;
1210        r1 |= BID_ENGR_PAGE;
1211
1212        outb(r1, ioaddr + BID_REG_3);
1213        r1 = inb(ioaddr + BID_REG_1);
1214        r1 &= BID_ICR_MASK;
1215        r1 |= (BID_RLA | BID_OTHER_BIT);
1216
1217        outb(r1, ioaddr + BID_REG_1);
1218
1219        r1 = inb(ioaddr + BID_REG_1);
1220        while(r1 & BID_RECALL_DONE_MASK)
1221                r1 = inb(ioaddr + BID_REG_1);
1222
1223        r = inb(ioaddr + BID_LAR_0 + BID_REG_6);
1224
1225        /* clear chip rev bits */
1226        tp->extra_info &= ~CHIP_REV_MASK;
1227        tp->extra_info |= ((r & BID_EEPROM_CHIP_REV_MASK) << 6);
1228
1229        r1 = inb(ioaddr + BID_REG_1);
1230        r1 &= BID_ICR_MASK;
1231        r1 |= BID_OTHER_BIT;
1232
1233        outb(r1, ioaddr + BID_REG_1);
1234        r1 = inb(ioaddr + BID_REG_3);
1235
1236        r1 &= BID_EAR_MASK;
1237        r1 |= BID_EA6;
1238
1239        outb(r1, ioaddr + BID_REG_3);
1240        r1 = inb(ioaddr + BID_REG_1);
1241
1242        r1 &= BID_ICR_MASK;
1243        r1 |= BID_RLA;
1244
1245        outb(r1, ioaddr + BID_REG_1);
1246        r1 = inb(ioaddr + BID_REG_1);
1247
1248        while(r1 & BID_RECALL_DONE_MASK)
1249                r1 = inb(ioaddr + BID_REG_1);
1250
1251        return (BoardIdMask);
1252}
1253
1254static int smctr_get_group_address(struct net_device *dev)
1255{
1256        smctr_issue_read_word_cmd(dev, RW_INDIVIDUAL_GROUP_ADDR);
1257
1258        return(smctr_wait_cmd(dev));
1259}
1260
1261static int smctr_get_functional_address(struct net_device *dev)
1262{
1263        smctr_issue_read_word_cmd(dev, RW_FUNCTIONAL_ADDR);
1264
1265        return(smctr_wait_cmd(dev));
1266}
1267
1268/* Calculate number of Non-MAC receive BDB's and data buffers.
1269 * This function must simulate allocateing shared memory exactly
1270 * as the allocate_shared_memory function above.
1271 */
1272static unsigned int smctr_get_num_rx_bdbs(struct net_device *dev)
1273{
1274        struct net_local *tp = netdev_priv(dev);
1275        unsigned int mem_used = 0;
1276
1277        /* Allocate System Control Blocks. */
1278        mem_used += sizeof(SCGBlock);
1279
1280        mem_used += TO_PARAGRAPH_BOUNDRY(mem_used);
1281        mem_used += sizeof(SCLBlock);
1282
1283        mem_used += TO_PARAGRAPH_BOUNDRY(mem_used);
1284        mem_used += sizeof(ACBlock) * tp->num_acbs;
1285
1286        mem_used += TO_PARAGRAPH_BOUNDRY(mem_used);
1287        mem_used += sizeof(ISBlock);
1288
1289        mem_used += TO_PARAGRAPH_BOUNDRY(mem_used);
1290        mem_used += MISC_DATA_SIZE;
1291
1292        /* Allocate transmit FCB's. */
1293        mem_used += TO_PARAGRAPH_BOUNDRY(mem_used);
1294
1295        mem_used += sizeof(FCBlock) * tp->num_tx_fcbs[MAC_QUEUE];
1296        mem_used += sizeof(FCBlock) * tp->num_tx_fcbs[NON_MAC_QUEUE];
1297        mem_used += sizeof(FCBlock) * tp->num_tx_fcbs[BUG_QUEUE];
1298
1299        /* Allocate transmit BDBs. */
1300        mem_used += sizeof(BDBlock) * tp->num_tx_bdbs[MAC_QUEUE];
1301        mem_used += sizeof(BDBlock) * tp->num_tx_bdbs[NON_MAC_QUEUE];
1302        mem_used += sizeof(BDBlock) * tp->num_tx_bdbs[BUG_QUEUE];
1303
1304        /* Allocate receive FCBs. */
1305        mem_used += sizeof(FCBlock) * tp->num_rx_fcbs[MAC_QUEUE];
1306        mem_used += sizeof(FCBlock) * tp->num_rx_fcbs[NON_MAC_QUEUE];
1307
1308        /* Allocate receive BDBs. */
1309        mem_used += sizeof(BDBlock) * tp->num_rx_bdbs[MAC_QUEUE];
1310
1311        /* Allocate MAC transmit buffers.
1312         * MAC transmit buffers don't have to be on an ODD Boundry.
1313         */
1314        mem_used += tp->tx_buff_size[MAC_QUEUE];
1315
1316        /* Allocate BUG transmit buffers. */
1317        mem_used += tp->tx_buff_size[BUG_QUEUE];
1318
1319        /* Allocate MAC receive data buffers.
1320         * MAC receive buffers don't have to be on a 256 byte boundary.
1321         */
1322        mem_used += RX_DATA_BUFFER_SIZE * tp->num_rx_bdbs[MAC_QUEUE];
1323
1324        /* Allocate Non-MAC transmit buffers.
1325         * For maximum Netware performance, put Tx Buffers on
1326         * ODD Boundry,and then restore malloc to Even Boundrys.
1327         */
1328        mem_used += 1L;
1329        mem_used += tp->tx_buff_size[NON_MAC_QUEUE];
1330        mem_used += 1L;
1331
1332        /* CALCULATE NUMBER OF NON-MAC RX BDB'S
1333         * AND NON-MAC RX DATA BUFFERS
1334         *
1335         * Make sure the mem_used offset at this point is the
1336         * same as in allocate_shared memory or the following
1337         * boundary adjustment will be incorrect (i.e. not allocating
1338         * the non-mac receive buffers above cannot change the 256
1339         * byte offset).
1340         *
1341         * Since this cannot be guaranteed, adding the full 256 bytes
1342         * to the amount of shared memory used at this point will guaranteed
1343         * that the rx data buffers do not overflow shared memory.
1344         */
1345        mem_used += 0x100;
1346
1347        return((0xffff - mem_used) / (RX_DATA_BUFFER_SIZE + sizeof(BDBlock)));
1348}
1349
1350static int smctr_get_physical_drop_number(struct net_device *dev)
1351{
1352        smctr_issue_read_word_cmd(dev, RW_PHYSICAL_DROP_NUMBER);
1353
1354        return(smctr_wait_cmd(dev));
1355}
1356
1357static __u8 * smctr_get_rx_pointer(struct net_device *dev, short queue)
1358{
1359        struct net_local *tp = netdev_priv(dev);
1360        BDBlock *bdb;
1361
1362        bdb = (BDBlock *)((__u32)tp->ram_access
1363                + (__u32)(tp->rx_fcb_curr[queue]->trc_bdb_ptr));
1364
1365        tp->rx_fcb_curr[queue]->bdb_ptr = bdb;
1366
1367        return ((__u8 *)bdb->data_block_ptr);
1368}
1369
1370static int smctr_get_station_id(struct net_device *dev)
1371{
1372        smctr_issue_read_word_cmd(dev, RW_INDIVIDUAL_MAC_ADDRESS);
1373
1374        return(smctr_wait_cmd(dev));
1375}
1376
1377/*
1378 * Get the current statistics. This may be called with the card open
1379 * or closed.
1380 */
1381static struct net_device_stats *smctr_get_stats(struct net_device *dev)
1382{
1383        struct net_local *tp = netdev_priv(dev);
1384
1385        return ((struct net_device_stats *)&tp->MacStat);
1386}
1387
1388static FCBlock *smctr_get_tx_fcb(struct net_device *dev, __u16 queue,
1389        __u16 bytes_count)
1390{
1391        struct net_local *tp = netdev_priv(dev);
1392        FCBlock *pFCB;
1393        BDBlock *pbdb;
1394        unsigned short alloc_size;
1395        unsigned short *temp;
1396
1397        if(smctr_debug > 20)
1398                printk(KERN_DEBUG "smctr_get_tx_fcb\n");
1399
1400        /* check if there is enough FCB blocks */
1401        if(tp->num_tx_fcbs_used[queue] >= tp->num_tx_fcbs[queue])
1402                return ((FCBlock *)(-1L));
1403
1404        /* round off the input pkt size to the nearest even number */
1405        alloc_size = (bytes_count + 1) & 0xfffe;
1406
1407        /* check if enough mem */
1408        if((tp->tx_buff_used[queue] + alloc_size) > tp->tx_buff_size[queue])
1409                return ((FCBlock *)(-1L));
1410
1411        /* check if past the end ;
1412         * if exactly enough mem to end of ring, alloc from front.
1413         * this avoids update of curr when curr = end
1414         */
1415        if(((unsigned long)(tp->tx_buff_curr[queue]) + alloc_size)
1416                >= (unsigned long)(tp->tx_buff_end[queue]))
1417        {
1418                /* check if enough memory from ring head */
1419                alloc_size = alloc_size +
1420                        (__u16)((__u32)tp->tx_buff_end[queue]
1421                        - (__u32)tp->tx_buff_curr[queue]);
1422
1423                if((tp->tx_buff_used[queue] + alloc_size)
1424                        > tp->tx_buff_size[queue])
1425                {
1426                        return ((FCBlock *)(-1L));
1427                }
1428
1429                /* ring wrap */
1430                tp->tx_buff_curr[queue] = tp->tx_buff_head[queue];
1431        }
1432
1433        tp->tx_buff_used[queue] += alloc_size;
1434        tp->num_tx_fcbs_used[queue]++;
1435        tp->tx_fcb_curr[queue]->frame_length = bytes_count;
1436        tp->tx_fcb_curr[queue]->memory_alloc = alloc_size;
1437        temp = tp->tx_buff_curr[queue];
1438        tp->tx_buff_curr[queue]
1439                = (__u16 *)((__u32)temp + (__u32)((bytes_count + 1) & 0xfffe));
1440
1441        pbdb = tp->tx_fcb_curr[queue]->bdb_ptr;
1442        pbdb->buffer_length = bytes_count;
1443        pbdb->data_block_ptr = temp;
1444        pbdb->trc_data_block_ptr = TRC_POINTER(temp);
1445
1446        pFCB = tp->tx_fcb_curr[queue];
1447        tp->tx_fcb_curr[queue] = tp->tx_fcb_curr[queue]->next_ptr;
1448
1449        return (pFCB);
1450}
1451
1452static int smctr_get_upstream_neighbor_addr(struct net_device *dev)
1453{
1454        smctr_issue_read_word_cmd(dev, RW_UPSTREAM_NEIGHBOR_ADDRESS);
1455
1456        return(smctr_wait_cmd(dev));
1457}
1458
1459static int smctr_hardware_send_packet(struct net_device *dev,
1460        struct net_local *tp)
1461{
1462        struct tr_statistics *tstat = &tp->MacStat;
1463        struct sk_buff *skb;
1464        FCBlock *fcb;
1465
1466        if(smctr_debug > 10)
1467                printk(KERN_DEBUG"%s: smctr_hardware_send_packet\n", dev->name);
1468
1469        if(tp->status != OPEN)
1470                return (-1);
1471
1472        if(tp->monitor_state_ready != 1)
1473                return (-1);
1474
1475        for(;;)
1476        {
1477                /* Send first buffer from queue */
1478                skb = skb_dequeue(&tp->SendSkbQueue);
1479                if(skb == NULL)
1480                        return (-1);
1481
1482                tp->QueueSkb++;
1483
1484                if(skb->len < SMC_HEADER_SIZE || skb->len > tp->max_packet_size)                        return (-1);
1485
1486                smctr_enable_16bit(dev);
1487                smctr_set_page(dev, (__u8 *)tp->ram_access);
1488
1489                if((fcb = smctr_get_tx_fcb(dev, NON_MAC_QUEUE, skb->len))
1490                        == (FCBlock *)(-1L))
1491                {
1492                        smctr_disable_16bit(dev);
1493                        return (-1);
1494                }
1495
1496                smctr_tx_move_frame(dev, skb,
1497                        (__u8 *)fcb->bdb_ptr->data_block_ptr, skb->len);
1498
1499                smctr_set_page(dev, (__u8 *)fcb);
1500
1501                smctr_trc_send_packet(dev, fcb, NON_MAC_QUEUE);
1502                dev_kfree_skb(skb);
1503
1504                tstat->tx_packets++;
1505
1506                smctr_disable_16bit(dev);
1507        }
1508
1509        return (0);
1510}
1511
1512static int smctr_init_acbs(struct net_device *dev)
1513{
1514        struct net_local *tp = netdev_priv(dev);
1515        unsigned int i;
1516        ACBlock *acb;
1517
1518        if(smctr_debug > 10)
1519                printk(KERN_DEBUG "%s: smctr_init_acbs\n", dev->name);
1520
1521        acb                     = tp->acb_head;
1522        acb->cmd_done_status    = (ACB_COMMAND_DONE | ACB_COMMAND_SUCCESSFUL);
1523        acb->cmd_info           = ACB_CHAIN_END;
1524        acb->cmd                = 0;
1525        acb->subcmd             = 0;
1526        acb->data_offset_lo     = 0;
1527        acb->data_offset_hi     = 0;
1528        acb->next_ptr
1529                = (ACBlock *)(((char *)acb) + sizeof(ACBlock));
1530        acb->trc_next_ptr       = TRC_POINTER(acb->next_ptr);
1531
1532        for(i = 1; i < tp->num_acbs; i++)
1533        {
1534                acb             = acb->next_ptr;
1535                acb->cmd_done_status
1536                        = (ACB_COMMAND_DONE | ACB_COMMAND_SUCCESSFUL);
1537                acb->cmd_info = ACB_CHAIN_END;
1538                acb->cmd        = 0;
1539                acb->subcmd     = 0;
1540                acb->data_offset_lo = 0;
1541                acb->data_offset_hi = 0;
1542                acb->next_ptr
1543                        = (ACBlock *)(((char *)acb) + sizeof(ACBlock));
1544                acb->trc_next_ptr = TRC_POINTER(acb->next_ptr);
1545        }
1546
1547        acb->next_ptr           = tp->acb_head;
1548        acb->trc_next_ptr       = TRC_POINTER(tp->acb_head);
1549        tp->acb_next            = tp->acb_head->next_ptr;
1550        tp->acb_curr            = tp->acb_head->next_ptr;
1551        tp->num_acbs_used       = 0;
1552
1553        return (0);
1554}
1555
1556static int smctr_init_adapter(struct net_device *dev)
1557{
1558        struct net_local *tp = netdev_priv(dev);
1559        int err;
1560
1561        if(smctr_debug > 10)
1562                printk(KERN_DEBUG "%s: smctr_init_adapter\n", dev->name);
1563
1564        tp->status              = CLOSED;
1565        tp->page_offset_mask    = (tp->ram_usable * 1024) - 1;
1566        skb_queue_head_init(&tp->SendSkbQueue);
1567        tp->QueueSkb = MAX_TX_QUEUE;
1568
1569        if(!(tp->group_address_0 & 0x0080))
1570                tp->group_address_0 |= 0x00C0;
1571
1572        if(!(tp->functional_address_0 & 0x00C0))
1573                tp->functional_address_0 |= 0x00C0;
1574
1575        tp->functional_address[0] &= 0xFF7F;
1576
1577        if(tp->authorized_function_classes == 0)
1578                tp->authorized_function_classes = 0x7FFF;
1579
1580        if(tp->authorized_access_priority == 0)
1581                tp->authorized_access_priority = 0x06;
1582
1583        smctr_disable_bic_int(dev);
1584        smctr_set_trc_reset(dev->base_addr);
1585
1586        smctr_enable_16bit(dev);
1587        smctr_set_page(dev, (__u8 *)tp->ram_access);
1588
1589        if(smctr_checksum_firmware(dev))
1590        {
1591                printk(KERN_ERR "%s: Previously loaded firmware is missing\n",dev->name);                return (-ENOENT);
1592        }
1593
1594        if((err = smctr_ram_memory_test(dev)))
1595        {
1596                printk(KERN_ERR "%s: RAM memory test failed.\n", dev->name);
1597                return (-EIO);
1598        }
1599
1600        smctr_set_rx_look_ahead(dev);
1601        smctr_load_node_addr(dev);
1602
1603        /* Initialize adapter for Internal Self Test. */
1604        smctr_reset_adapter(dev);
1605        if((err = smctr_init_card_real(dev)))
1606        {
1607                printk(KERN_ERR "%s: Initialization of card failed (%d)\n",
1608                        dev->name, err);
1609                return (-EINVAL);
1610        }
1611
1612        /* This routine clobbers the TRC's internal registers. */
1613        if((err = smctr_internal_self_test(dev)))
1614        {
1615                printk(KERN_ERR "%s: Card failed internal self test (%d)\n",
1616                        dev->name, err);
1617                return (-EINVAL);
1618        }
1619
1620        /* Re-Initialize adapter's internal registers */
1621        smctr_reset_adapter(dev);
1622        if((err = smctr_init_card_real(dev)))
1623        {
1624                printk(KERN_ERR "%s: Initialization of card failed (%d)\n",
1625                        dev->name, err);
1626                return (-EINVAL);
1627        }
1628
1629        smctr_enable_bic_int(dev);
1630
1631        if((err = smctr_issue_enable_int_cmd(dev, TRC_INTERRUPT_ENABLE_MASK)))
1632                return (err);
1633
1634        smctr_disable_16bit(dev);
1635
1636        return (0);
1637}
1638
1639static int smctr_init_card_real(struct net_device *dev)
1640{
1641        struct net_local *tp = netdev_priv(dev);
1642        int err = 0;
1643
1644        if(smctr_debug > 10)
1645                printk(KERN_DEBUG "%s: smctr_init_card_real\n", dev->name);
1646
1647        tp->sh_mem_used = 0;
1648        tp->num_acbs    = NUM_OF_ACBS;
1649
1650        /* Range Check Max Packet Size */
1651        if(tp->max_packet_size < 256)
1652                tp->max_packet_size = 256;
1653        else
1654        {
1655                if(tp->max_packet_size > NON_MAC_TX_BUFFER_MEMORY)
1656                        tp->max_packet_size = NON_MAC_TX_BUFFER_MEMORY;
1657        }
1658
1659        tp->num_of_tx_buffs = (NON_MAC_TX_BUFFER_MEMORY
1660                / tp->max_packet_size) - 1;
1661
1662        if(tp->num_of_tx_buffs > NUM_NON_MAC_TX_FCBS)
1663                tp->num_of_tx_buffs = NUM_NON_MAC_TX_FCBS;
1664        else
1665        {
1666                if(tp->num_of_tx_buffs == 0)
1667                        tp->num_of_tx_buffs = 1;
1668        }
1669
1670        /* Tx queue constants */
1671        tp->num_tx_fcbs        [BUG_QUEUE]     = NUM_BUG_TX_FCBS;
1672        tp->num_tx_bdbs        [BUG_QUEUE]     = NUM_BUG_TX_BDBS;
1673        tp->tx_buff_size       [BUG_QUEUE]     = BUG_TX_BUFFER_MEMORY;
1674        tp->tx_buff_used       [BUG_QUEUE]     = 0;
1675        tp->tx_queue_status    [BUG_QUEUE]     = NOT_TRANSMITING;
1676
1677        tp->num_tx_fcbs        [MAC_QUEUE]     = NUM_MAC_TX_FCBS;
1678        tp->num_tx_bdbs        [MAC_QUEUE]     = NUM_MAC_TX_BDBS;
1679        tp->tx_buff_size       [MAC_QUEUE]     = MAC_TX_BUFFER_MEMORY;
1680        tp->tx_buff_used       [MAC_QUEUE]     = 0;
1681        tp->tx_queue_status    [MAC_QUEUE]     = NOT_TRANSMITING;
1682
1683        tp->num_tx_fcbs        [NON_MAC_QUEUE] = NUM_NON_MAC_TX_FCBS;
1684        tp->num_tx_bdbs        [NON_MAC_QUEUE] = NUM_NON_MAC_TX_BDBS;
1685        tp->tx_buff_size       [NON_MAC_QUEUE] = NON_MAC_TX_BUFFER_MEMORY;
1686        tp->tx_buff_used       [NON_MAC_QUEUE] = 0;
1687        tp->tx_queue_status    [NON_MAC_QUEUE] = NOT_TRANSMITING;
1688
1689        /* Receive Queue Constants */
1690        tp->num_rx_fcbs[MAC_QUEUE] = NUM_MAC_RX_FCBS;
1691        tp->num_rx_bdbs[MAC_QUEUE] = NUM_MAC_RX_BDBS;
1692
1693        if(tp->extra_info & CHIP_REV_MASK)
1694                tp->num_rx_fcbs[NON_MAC_QUEUE] = 78;    /* 825 Rev. XE */
1695        else
1696                tp->num_rx_fcbs[NON_MAC_QUEUE] = 7;     /* 825 Rev. XD */
1697
1698        tp->num_rx_bdbs[NON_MAC_QUEUE] = smctr_get_num_rx_bdbs(dev);
1699
1700        smctr_alloc_shared_memory(dev);
1701        smctr_init_shared_memory(dev);
1702
1703        if((err = smctr_issue_init_timers_cmd(dev)))
1704                return (err);
1705
1706        if((err = smctr_issue_init_txrx_cmd(dev)))
1707        {
1708                printk(KERN_ERR "%s: Hardware failure\n", dev->name);
1709                return (err);
1710        }
1711
1712        return (0);
1713}
1714
1715static int smctr_init_rx_bdbs(struct net_device *dev)
1716{
1717        struct net_local *tp = netdev_priv(dev);
1718        unsigned int i, j;
1719        BDBlock *bdb;
1720        __u16 *buf;
1721
1722        if(smctr_debug > 10)
1723                printk(KERN_DEBUG "%s: smctr_init_rx_bdbs\n", dev->name);
1724
1725        for(i = 0; i < NUM_RX_QS_USED; i++)
1726        {
1727                bdb = tp->rx_bdb_head[i];
1728                buf = tp->rx_buff_head[i];
1729                bdb->info = (BDB_CHAIN_END | BDB_NO_WARNING);
1730                bdb->buffer_length = RX_DATA_BUFFER_SIZE;
1731                bdb->next_ptr = (BDBlock *)(((char *)bdb) + sizeof(BDBlock));
1732                bdb->data_block_ptr = buf;
1733                bdb->trc_next_ptr = TRC_POINTER(bdb->next_ptr);
1734
1735                if(i == NON_MAC_QUEUE)
1736                        bdb->trc_data_block_ptr = RX_BUFF_TRC_POINTER(buf);
1737                else
1738                        bdb->trc_data_block_ptr = TRC_POINTER(buf);
1739
1740                for(j = 1; j < tp->num_rx_bdbs[i]; j++)
1741                {
1742                        bdb->next_ptr->back_ptr = bdb;
1743                        bdb = bdb->next_ptr;
1744                        buf = (__u16 *)((char *)buf + RX_DATA_BUFFER_SIZE);
1745                        bdb->info = (BDB_NOT_CHAIN_END | BDB_NO_WARNING);
1746                        bdb->buffer_length = RX_DATA_BUFFER_SIZE;
1747                        bdb->next_ptr = (BDBlock *)(((char *)bdb) + sizeof(BDBlock));
1748                        bdb->data_block_ptr = buf;
1749                        bdb->trc_next_ptr = TRC_POINTER(bdb->next_ptr);
1750
1751                        if(i == NON_MAC_QUEUE)
1752                                bdb->trc_data_block_ptr = RX_BUFF_TRC_POINTER(buf);
1753                        else
1754                                bdb->trc_data_block_ptr = TRC_POINTER(buf);
1755                }
1756
1757                bdb->next_ptr           = tp->rx_bdb_head[i];
1758                bdb->trc_next_ptr       = TRC_POINTER(tp->rx_bdb_head[i]);
1759
1760                tp->rx_bdb_head[i]->back_ptr    = bdb;
1761                tp->rx_bdb_curr[i]              = tp->rx_bdb_head[i]->next_ptr;
1762        }
1763
1764        return (0);
1765}
1766
1767static int smctr_init_rx_fcbs(struct net_device *dev)
1768{
1769        struct net_local *tp = netdev_priv(dev);
1770        unsigned int i, j;
1771        FCBlock *fcb;
1772
1773        for(i = 0; i < NUM_RX_QS_USED; i++)
1774        {
1775                fcb               = tp->rx_fcb_head[i];
1776                fcb->frame_status = 0;
1777                fcb->frame_length = 0;
1778                fcb->info         = FCB_CHAIN_END;
1779                fcb->next_ptr     = (FCBlock *)(((char*)fcb) + sizeof(FCBlock));
1780                if(i == NON_MAC_QUEUE)
1781                        fcb->trc_next_ptr = RX_FCB_TRC_POINTER(fcb->next_ptr);
1782                else
1783                        fcb->trc_next_ptr = TRC_POINTER(fcb->next_ptr);
1784
1785                for(j = 1; j < tp->num_rx_fcbs[i]; j++)
1786                {
1787                        fcb->next_ptr->back_ptr = fcb;
1788                        fcb                     = fcb->next_ptr;
1789                        fcb->frame_status       = 0;
1790                        fcb->frame_length       = 0;
1791                        fcb->info               = FCB_WARNING;
1792                        fcb->next_ptr
1793                                = (FCBlock *)(((char *)fcb) + sizeof(FCBlock));
1794
1795                        if(i == NON_MAC_QUEUE)
1796                                fcb->trc_next_ptr
1797                                        = RX_FCB_TRC_POINTER(fcb->next_ptr);
1798                        else
1799                                fcb->trc_next_ptr
1800                                        = TRC_POINTER(fcb->next_ptr);
1801                }
1802
1803                fcb->next_ptr = tp->rx_fcb_head[i];
1804
1805                if(i == NON_MAC_QUEUE)
1806                        fcb->trc_next_ptr = RX_FCB_TRC_POINTER(fcb->next_ptr);
1807                else
1808                        fcb->trc_next_ptr = TRC_POINTER(fcb->next_ptr);
1809
1810                tp->rx_fcb_head[i]->back_ptr    = fcb;
1811                tp->rx_fcb_curr[i]              = tp->rx_fcb_head[i]->next_ptr;
1812        }
1813
1814        return(0);
1815}
1816
1817static int smctr_init_shared_memory(struct net_device *dev)
1818{
1819        struct net_local *tp = netdev_priv(dev);
1820        unsigned int i;
1821        __u32 *iscpb;
1822
1823        if(smctr_debug > 10)
1824                printk(KERN_DEBUG "%s: smctr_init_shared_memory\n", dev->name);
1825
1826        smctr_set_page(dev, (__u8 *)(unsigned int)tp->iscpb_ptr);
1827
1828        /* Initialize Initial System Configuration Point. (ISCP) */
1829        iscpb = (__u32 *)PAGE_POINTER(&tp->iscpb_ptr->trc_scgb_ptr);
1830        *iscpb = (__u32)(SWAP_WORDS(TRC_POINTER(tp->scgb_ptr)));
1831
1832        smctr_set_page(dev, (__u8 *)tp->ram_access);
1833
1834        /* Initialize System Configuration Pointers. (SCP) */
1835        tp->scgb_ptr->config = (SCGB_ADDRESS_POINTER_FORMAT
1836                | SCGB_MULTI_WORD_CONTROL | SCGB_DATA_FORMAT
1837                | SCGB_BURST_LENGTH);
1838
1839        tp->scgb_ptr->trc_sclb_ptr      = TRC_POINTER(tp->sclb_ptr);
1840        tp->scgb_ptr->trc_acb_ptr       = TRC_POINTER(tp->acb_head);
1841        tp->scgb_ptr->trc_isb_ptr       = TRC_POINTER(tp->isb_ptr);
1842        tp->scgb_ptr->isbsiz            = (sizeof(ISBlock)) - 2;
1843
1844        /* Initialize System Control Block. (SCB) */
1845        tp->sclb_ptr->valid_command    = SCLB_VALID | SCLB_CMD_NOP;
1846        tp->sclb_ptr->iack_code        = 0;
1847        tp->sclb_ptr->resume_control   = 0;
1848        tp->sclb_ptr->int_mask_control = 0;
1849        tp->sclb_ptr->int_mask_state   = 0;
1850
1851        /* Initialize Interrupt Status Block. (ISB) */
1852        for(i = 0; i < NUM_OF_INTERRUPTS; i++)
1853        {
1854                tp->isb_ptr->IStatus[i].IType = 0xf0;
1855                tp->isb_ptr->IStatus[i].ISubtype = 0;
1856        }
1857
1858        tp->current_isb_index = 0;
1859
1860        /* Initialize Action Command Block. (ACB) */
1861        smctr_init_acbs(dev);
1862
1863        /* Initialize transmit FCB's and BDB's. */
1864        smctr_link_tx_fcbs_to_bdbs(dev);
1865        smctr_init_tx_bdbs(dev);
1866        smctr_init_tx_fcbs(dev);
1867
1868        /* Initialize receive FCB's and BDB's. */
1869        smctr_init_rx_bdbs(dev);
1870        smctr_init_rx_fcbs(dev);
1871
1872        return (0);
1873}
1874
1875static int smctr_init_tx_bdbs(struct net_device *dev)
1876{
1877        struct net_local *tp = netdev_priv(dev);
1878        unsigned int i, j;
1879        BDBlock *bdb;
1880
1881        for(i = 0; i < NUM_TX_QS_USED; i++)
1882        {
1883                bdb = tp->tx_bdb_head[i];
1884                bdb->info = (BDB_NOT_CHAIN_END | BDB_NO_WARNING);
1885                bdb->next_ptr = (BDBlock *)(((char *)bdb) + sizeof(BDBlock));
1886                bdb->trc_next_ptr = TRC_POINTER(bdb->next_ptr);
1887
1888                for(j = 1; j < tp->num_tx_bdbs[i]; j++)
1889                {
1890                        bdb->next_ptr->back_ptr = bdb;
1891                        bdb = bdb->next_ptr;
1892                        bdb->info = (BDB_NOT_CHAIN_END | BDB_NO_WARNING);
1893                        bdb->next_ptr
1894                                = (BDBlock *)(((char *)bdb) + sizeof( BDBlock));                        bdb->trc_next_ptr = TRC_POINTER(bdb->next_ptr);
1895                }
1896
1897                bdb->next_ptr = tp->tx_bdb_head[i];
1898                bdb->trc_next_ptr = TRC_POINTER(tp->tx_bdb_head[i]);
1899                tp->tx_bdb_head[i]->back_ptr = bdb;
1900        }
1901
1902        return (0);
1903}
1904
1905static int smctr_init_tx_fcbs(struct net_device *dev)
1906{
1907        struct net_local *tp = netdev_priv(dev);
1908        unsigned int i, j;
1909        FCBlock *fcb;
1910
1911        for(i = 0; i < NUM_TX_QS_USED; i++)
1912        {
1913                fcb               = tp->tx_fcb_head[i];
1914                fcb->frame_status = 0;
1915                fcb->frame_length = 0;
1916                fcb->info         = FCB_CHAIN_END;
1917                fcb->next_ptr = (FCBlock *)(((char *)fcb) + sizeof(FCBlock));
1918                fcb->trc_next_ptr = TRC_POINTER(fcb->next_ptr);
1919
1920                for(j = 1; j < tp->num_tx_fcbs[i]; j++)
1921                {
1922                        fcb->next_ptr->back_ptr = fcb;
1923                        fcb                     = fcb->next_ptr;
1924                        fcb->frame_status       = 0;
1925                        fcb->frame_length       = 0;
1926                        fcb->info               = FCB_CHAIN_END;
1927                        fcb->next_ptr
1928                                = (FCBlock *)(((char *)fcb) + sizeof(FCBlock));
1929                        fcb->trc_next_ptr = TRC_POINTER(fcb->next_ptr);
1930                }
1931
1932                fcb->next_ptr           = tp->tx_fcb_head[i];
1933                fcb->trc_next_ptr       = TRC_POINTER(tp->tx_fcb_head[i]);
1934
1935                tp->tx_fcb_head[i]->back_ptr    = fcb;
1936                tp->tx_fcb_end[i]               = tp->tx_fcb_head[i]->next_ptr;
1937                tp->tx_fcb_curr[i]              = tp->tx_fcb_head[i]->next_ptr;
1938                tp->num_tx_fcbs_used[i]         = 0;
1939        }
1940
1941        return (0);
1942}
1943
1944static int smctr_internal_self_test(struct net_device *dev)
1945{
1946        struct net_local *tp = netdev_priv(dev);
1947        int err;
1948
1949        if((err = smctr_issue_test_internal_rom_cmd(dev)))
1950                return (err);
1951
1952        if((err = smctr_wait_cmd(dev)))
1953                return (err);
1954
1955        if(tp->acb_head->cmd_done_status & 0xff)
1956                return (-1);
1957
1958        if((err = smctr_issue_test_hic_cmd(dev)))
1959                return (err);
1960
1961        if((err = smctr_wait_cmd(dev)))
1962                return (err);
1963
1964        if(tp->acb_head->cmd_done_status & 0xff)
1965                return (-1);
1966
1967        if((err = smctr_issue_test_mac_reg_cmd(dev)))
1968                return (err);
1969
1970        if((err = smctr_wait_cmd(dev)))
1971                return (err);
1972
1973        if(tp->acb_head->cmd_done_status & 0xff)
1974                return (-1);
1975
1976        return (0);
1977}
1978
1979/*
1980 * The typical workload of the driver: Handle the network interface interrupts.
1981 */
1982static irqreturn_t smctr_interrupt(int irq, void *dev_id)
1983{
1984        struct net_device *dev = dev_id;
1985        struct net_local *tp;
1986        int ioaddr;
1987        __u16 interrupt_unmask_bits = 0, interrupt_ack_code = 0xff00;
1988        __u16 err1, err = NOT_MY_INTERRUPT;
1989        __u8 isb_type, isb_subtype;
1990        __u16 isb_index;
1991
1992        ioaddr = dev->base_addr;
1993        tp = netdev_priv(dev);
1994
1995        if(tp->status == NOT_INITIALIZED)
1996                return IRQ_NONE;
1997
1998        spin_lock(&tp->lock);
1999        
2000        smctr_disable_bic_int(dev);
2001        smctr_enable_16bit(dev);
2002
2003        smctr_clear_int(dev);
2004
2005        /* First read the LSB */
2006        while((tp->isb_ptr->IStatus[tp->current_isb_index].IType & 0xf0) == 0)
2007        {
2008                isb_index       = tp->current_isb_index;
2009                isb_type        = tp->isb_ptr->IStatus[isb_index].IType;
2010                isb_subtype     = tp->isb_ptr->IStatus[isb_index].ISubtype;
2011
2012                (tp->current_isb_index)++;
2013                if(tp->current_isb_index == NUM_OF_INTERRUPTS)
2014                        tp->current_isb_index = 0;
2015
2016                if(isb_type >= 0x10)
2017                {
2018                        smctr_disable_16bit(dev);
2019                        spin_unlock(&tp->lock);
2020                        return IRQ_HANDLED;
2021                }
2022
2023                err = HARDWARE_FAILED;
2024                interrupt_ack_code = isb_index;
2025                tp->isb_ptr->IStatus[isb_index].IType |= 0xf0;
2026
2027                interrupt_unmask_bits |= (1 << (__u16)isb_type);
2028
2029                switch(isb_type)
2030                {
2031                        case ISB_IMC_MAC_TYPE_3:
2032                                smctr_disable_16bit(dev);
2033
2034                                switch(isb_subtype)
2035                                {
2036                                        case 0:
2037                                                tp->monitor_state = MS_MONITOR_FSM_INACTIVE;
2038                                               break;
2039
2040                                        case 1:
2041                                                tp->monitor_state = MS_REPEAT_BEACON_STATE;
2042                                                break;
2043
2044                                        case 2:
2045                                                tp->monitor_state = MS_REPEAT_CLAIM_TOKEN_STATE;
2046                                                break;
2047
2048                                        case 3:
2049                                                tp->monitor_state = MS_TRANSMIT_CLAIM_TOKEN_STATE;                                                break;
2050
2051                                        case 4:
2052                                                tp->monitor_state = MS_STANDBY_MONITOR_STATE;
2053                                                break;
2054
2055                                        case 5:
2056                                                tp->monitor_state = MS_TRANSMIT_BEACON_STATE;
2057                                                break;
2058
2059                                        case 6:
2060                                                tp->monitor_state = MS_ACTIVE_MONITOR_STATE;
2061                                                break;
2062
2063                                        case 7:
2064                                                tp->monitor_state = MS_TRANSMIT_RING_PURGE_STATE;
2065                                                break;
2066
2067                                        case 8:   /* diagnostic state */
2068                                                break;
2069
2070                                        case 9:
2071                                                tp->monitor_state = MS_BEACON_TEST_STATE;
2072                                                if(smctr_lobe_media_test(dev))
2073                                                {
2074                                                        tp->ring_status_flags = RING_STATUS_CHANGED;
2075                                                        tp->ring_status = AUTO_REMOVAL_ERROR;
2076                                                        smctr_ring_status_chg(dev);
2077                                                        smctr_bypass_state(dev);
2078                                                }
2079                                                else
2080                                                        smctr_issue_insert_cmd(dev);
2081                                                break;
2082
2083                                        /* case 0x0a-0xff, illegal states */
2084                                        default:
2085                                                break;
2086                                }
2087
2088                                tp->ring_status_flags = MONITOR_STATE_CHANGED;
2089                                err = smctr_ring_status_chg(dev);
2090
2091                                smctr_enable_16bit(dev);
2092                                break;
2093
2094                        /* Type 0x02 - MAC Error Counters Interrupt
2095                         * One or more MAC Error Counter is half full
2096                         *      MAC Error Counters
2097                         *      Lost_FR_Error_Counter
2098                         *      RCV_Congestion_Counter
2099                         *      FR_copied_Error_Counter
2100                         *      FREQ_Error_Counter
2101                         *      Token_Error_Counter
2102                         *      Line_Error_Counter
2103                         *      Internal_Error_Count
2104                         */
2105                        case ISB_IMC_MAC_ERROR_COUNTERS:
2106                                /* Read 802.5 Error Counters */
2107                                err = smctr_issue_read_ring_status_cmd(dev);
2108                                break;
2109
2110                        /* Type 0x04 - MAC Type 2 Interrupt
2111                         * HOST needs to enqueue MAC Frame for transmission
2112                         * SubType Bit 15 - RQ_INIT_PDU( Request Initialization)                         * Changed from RQ_INIT_PDU to
2113                         * TRC_Status_Changed_Indicate
2114                         */
2115                        case ISB_IMC_MAC_TYPE_2:
2116                                err = smctr_issue_read_ring_status_cmd(dev);
2117                                break;
2118
2119
2120                        /* Type 0x05 - TX Frame Interrupt (FI). */
2121                        case ISB_IMC_TX_FRAME:
2122                                /* BUG QUEUE for TRC stuck receive BUG */
2123                                if(isb_subtype & TX_PENDING_PRIORITY_2)
2124                                {
2125                                        if((err = smctr_tx_complete(dev, BUG_QUEUE)) != SUCCESS)
2126                                                break;
2127                                }
2128
2129                                /* NON-MAC frames only */
2130                                if(isb_subtype & TX_PENDING_PRIORITY_1)
2131                                {
2132                                        if((err = smctr_tx_complete(dev, NON_MAC_QUEUE)) != SUCCESS)
2133                                                break;
2134                                }
2135
2136                                /* MAC frames only */
2137                                if(isb_subtype & TX_PENDING_PRIORITY_0)
2138                                        err = smctr_tx_complete(dev, MAC_QUEUE);                                break;
2139
2140                        /* Type 0x06 - TX END OF QUEUE (FE) */
2141                        case ISB_IMC_END_OF_TX_QUEUE:
2142                                /* BUG queue */
2143                                if(isb_subtype & TX_PENDING_PRIORITY_2)
2144                                {
2145                                        /* ok to clear Receive FIFO overrun
2146                                         * imask send_BUG now completes.
2147                                         */
2148                                        interrupt_unmask_bits |= 0x800;
2149
2150                                        tp->tx_queue_status[BUG_QUEUE] = NOT_TRANSMITING;
2151                                        if((err = smctr_tx_complete(dev, BUG_QUEUE)) != SUCCESS)
2152                                                break;
2153                                        if((err = smctr_restart_tx_chain(dev, BUG_QUEUE)) != SUCCESS)
2154                                                break;
2155                                }
2156
2157                                /* NON-MAC queue only */
2158                                if(isb_subtype & TX_PENDING_PRIORITY_1)
2159                                {
2160                                        tp->tx_queue_status[NON_MAC_QUEUE] = NOT_TRANSMITING;
2161                                        if((err = smctr_tx_complete(dev, NON_MAC_QUEUE)) != SUCCESS)
2162                                                break;
2163                                        if((err = smctr_restart_tx_chain(dev, NON_MAC_QUEUE)) != SUCCESS)
2164                                                break;
2165                                }
2166
2167                                /* MAC queue only */
2168                                if(isb_subtype & TX_PENDING_PRIORITY_0)
2169                                {
2170                                        tp->tx_queue_status[MAC_QUEUE] = NOT_TRANSMITING;
2171                                        if((err = smctr_tx_complete(dev, MAC_QUEUE)) != SUCCESS)
2172                                                break;
2173
2174                                        err = smctr_restart_tx_chain(dev, MAC_QUEUE);
2175                                }
2176                                break;
2177
2178                        /* Type 0x07 - NON-MAC RX Resource Interrupt
2179                         *   Subtype bit 12 - (BW) BDB warning
2180                         *   Subtype bit 13 - (FW) FCB warning
2181                         *   Subtype bit 14 - (BE) BDB End of chain
2182                         *   Subtype bit 15 - (FE) FCB End of chain
2183                         */
2184                        case ISB_IMC_NON_MAC_RX_RESOURCE:
2185                                tp->rx_fifo_overrun_count = 0;
2186                                tp->receive_queue_number = NON_MAC_QUEUE;
2187                                err1 = smctr_rx_frame(dev);
2188
2189                                if(isb_subtype & NON_MAC_RX_RESOURCE_FE)
2190                                {
2191                                        if((err = smctr_issue_resume_rx_fcb_cmd(                                                dev, NON_MAC_QUEUE)) != SUCCESS)                                                break;
2192
2193                                        if(tp->ptr_rx_fcb_overruns)
2194                                                (*tp->ptr_rx_fcb_overruns)++;
2195                                }
2196
2197                                if(isb_subtype & NON_MAC_RX_RESOURCE_BE)
2198                                {
2199                                        if((err = smctr_issue_resume_rx_bdb_cmd(                                                dev, NON_MAC_QUEUE)) != SUCCESS)                                                break;
2200
2201                                        if(tp->ptr_rx_bdb_overruns)
2202                                                (*tp->ptr_rx_bdb_overruns)++;
2203                                }
2204                                err = err1;
2205                                break;
2206
2207                        /* Type 0x08 - MAC RX Resource Interrupt
2208                         *   Subtype bit 12 - (BW) BDB warning
2209                         *   Subtype bit 13 - (FW) FCB warning
2210                         *   Subtype bit 14 - (BE) BDB End of chain
2211                         *   Subtype bit 15 - (FE) FCB End of chain
2212                         */
2213                        case ISB_IMC_MAC_RX_RESOURCE:
2214                                tp->receive_queue_number = MAC_QUEUE;
2215                                err1 = smctr_rx_frame(dev);
2216
2217                                if(isb_subtype & MAC_RX_RESOURCE_FE)
2218                                {
2219                                        if((err = smctr_issue_resume_rx_fcb_cmd(                                                dev, MAC_QUEUE)) != SUCCESS)
2220                                                break;
2221
2222                                        if(tp->ptr_rx_fcb_overruns)
2223                                                (*tp->ptr_rx_fcb_overruns)++;
2224                                }
2225
2226                                if(isb_subtype & MAC_RX_RESOURCE_BE)
2227                                {
2228                                        if((err = smctr_issue_resume_rx_bdb_cmd(                                                dev, MAC_QUEUE)) != SUCCESS)
2229                                                break;
2230
2231                                        if(tp->ptr_rx_bdb_overruns)
2232                                                (*tp->ptr_rx_bdb_overruns)++;
2233                                }
2234                                err = err1;
2235                                break;
2236
2237                        /* Type 0x09 - NON_MAC RX Frame Interrupt */
2238                        case ISB_IMC_NON_MAC_RX_FRAME:
2239                                tp->rx_fifo_overrun_count = 0;
2240                                tp->receive_queue_number = NON_MAC_QUEUE;
2241                                err = smctr_rx_frame(dev);
2242                                break;
2243
2244                        /* Type 0x0A - MAC RX Frame Interrupt */
2245                        case ISB_IMC_MAC_RX_FRAME:
2246                                tp->receive_queue_number = MAC_QUEUE;
2247                                err = smctr_rx_frame(dev);
2248                                break;
2249
2250                        /* Type 0x0B - TRC status
2251                         * TRC has encountered an error condition
2252                         * subtype bit 14 - transmit FIFO underrun
2253                         * subtype bit 15 - receive FIFO overrun
2254                         */
2255                        case ISB_IMC_TRC_FIFO_STATUS:
2256                                if(isb_subtype & TRC_FIFO_STATUS_TX_UNDERRUN)
2257                                {
2258                                        if(tp->ptr_tx_fifo_underruns)
2259                                                (*tp->ptr_tx_fifo_underruns)++;
2260                                }
2261
2262                                if(isb_subtype & TRC_FIFO_STATUS_RX_OVERRUN)
2263                                {
2264                                        /* update overrun stuck receive counter
2265                                         * if >= 3, has to clear it by sending
2266                                         * back to back frames. We pick
2267                                         * DAT(duplicate address MAC frame)
2268                                         */
2269                                        tp->rx_fifo_overrun_count++;
2270
2271                                        if(tp->rx_fifo_overrun_count >= 3)
2272                                        {
2273                                                tp->rx_fifo_overrun_count = 0;
2274
2275                                                /* delay clearing fifo overrun
2276                                                 * imask till send_BUG tx
2277                                                 * complete posted
2278                                                 */
2279                                                interrupt_unmask_bits &= (~0x800);
2280                                                printk(KERN_CRIT "Jay please send bug\n");//                                              smctr_send_bug(dev);
2281                                        }
2282
2283                                        if(tp->ptr_rx_fifo_overruns)
2284                                                (*tp->ptr_rx_fifo_overruns)++;
2285                                }
2286
2287                                err = SUCCESS;
2288                                break;
2289
2290                        /* Type 0x0C - Action Command Status Interrupt
2291                         * Subtype bit 14 - CB end of command chain (CE)
2292                         * Subtype bit 15 - CB command interrupt (CI)
2293                         */
2294                        case ISB_IMC_COMMAND_STATUS:
2295                                err = SUCCESS;
2296                                if(tp->acb_head->cmd == ACB_CMD_HIC_NOP)
2297                                {
2298                                        printk(KERN_ERR "i1\n");
2299                                        smctr_disable_16bit(dev);
2300
2301                                        /* XXXXXXXXXXXXXXXXX */
2302                                /*      err = UM_Interrupt(dev); */
2303
2304                                        smctr_enable_16bit(dev);
2305                                }
2306                                else
2307                                {
2308                                        if((tp->acb_head->cmd
2309                                                == ACB_CMD_READ_TRC_STATUS)
2310                                                && (tp->acb_head->subcmd
2311                                                == RW_TRC_STATUS_BLOCK))
2312                                        {
2313                                                if(tp->ptr_bcn_type != 0)
2314                                                {
2315                                                        *(tp->ptr_bcn_type)
2316                                                                = (__u32)((SBlock *)tp->misc_command_data)->BCN_Type;
2317                                                }
2318
2319                                                if(((SBlock *)tp->misc_command_data)->Status_CHG_Indicate & ERROR_COUNTERS_CHANGED)
2320                                                {
2321                                                        smctr_update_err_stats(dev);
2322                                                }
2323
2324                                                if(((SBlock *)tp->misc_command_data)->Status_CHG_Indicate & TI_NDIS_RING_STATUS_CHANGED)
2325                                                {
2326                                                        tp->ring_status
2327                                                                = ((SBlock*)tp->misc_command_data)->TI_NDIS_Ring_Status;
2328                                                        smctr_disable_16bit(dev);
2329                                                        err = smctr_ring_status_chg(dev);
2330                                                        smctr_enable_16bit(dev);
2331                                                        if((tp->ring_status & REMOVE_RECEIVED)
2332                                                                && (tp->config_word0 & NO_AUTOREMOVE))
2333                                                        {
2334                                                                smctr_issue_remove_cmd(dev);
2335                                                        }
2336
2337                                                        if(err != SUCCESS)
2338                                                        {
2339                                                                tp->acb_pending = 0;
2340                                                                break;
2341                                                        }
2342                                                }
2343
2344                                                if(((SBlock *)tp->misc_command_data)->Status_CHG_Indicate & UNA_CHANGED)
2345                                                {
2346                                                        if(tp->ptr_una)
2347                                                        {
2348                                                                tp->ptr_una[0] = SWAP_BYTES(((SBlock *)tp->misc_command_data)->UNA[0]);
2349                                                                tp->ptr_una[1] = SWAP_BYTES(((SBlock *)tp->misc_command_data)->UNA[1]);
2350                                                                tp->ptr_una[2] = SWAP_BYTES(((SBlock *)tp->misc_command_data)->UNA[2]);
2351                                                        }
2352
2353                                                }
2354
2355                                                if(((SBlock *)tp->misc_command_data)->Status_CHG_Indicate & READY_TO_SEND_RQ_INIT)                                                {
2356                                                        err = smctr_send_rq_init(dev);
2357                                                }
2358                                        }
2359                                }
2360
2361                                tp->acb_pending = 0;
2362                                break;
2363
2364                        /* Type 0x0D - MAC Type 1 interrupt
2365                         * Subtype -- 00 FR_BCN received at S12
2366                         *            01 FR_BCN received at S21
2367                         *            02 FR_DAT(DA=MA, A<>0) received at S21
2368                         *            03 TSM_EXP at S21
2369                         *            04 FR_REMOVE received at S42
2370                         *            05 TBR_EXP, BR_FLAG_SET at S42
2371                         *            06 TBT_EXP at S53
2372                         */
2373                        case ISB_IMC_MAC_TYPE_1:
2374                                if(isb_subtype > 8)
2375                                {
2376                                        err = HARDWARE_FAILED;
2377                                        break;
2378                                }
2379
2380                                err = SUCCESS;
2381                                switch(isb_subtype)
2382                                {
2383                                        case 0:
2384                                                tp->join_state = JS_BYPASS_STATE;
2385                                                if(tp->status != CLOSED)
2386                                                {
2387                                                        tp->status = CLOSED;
2388                                                        err = smctr_status_chg(dev);
2389                                                }
2390                                                break;
2391
2392                                        case 1:
2393                                                tp->join_state = JS_LOBE_TEST_STATE;
2394                                                break;
2395
2396                                        case 2:
2397                                                tp->join_state = JS_DETECT_MONITOR_PRESENT_STATE;
2398                                                break;
2399
2400                                        case 3:
2401                                                tp->join_state = JS_AWAIT_NEW_MONITOR_STATE;
2402                                                break;
2403
2404                                        case 4:
2405                                                tp->join_state = JS_DUPLICATE_ADDRESS_TEST_STATE;
2406                                                break;
2407
2408                                        case 5:
2409                                                tp->join_state = JS_NEIGHBOR_NOTIFICATION_STATE;
2410                                                break;
2411
2412                                        case 6:
2413                                                tp->join_state = JS_REQUEST_INITIALIZATION_STATE;
2414                                                break;
2415
2416                                        case 7:
2417                                                tp->join_state = JS_JOIN_COMPLETE_STATE;
2418                                                tp->status = OPEN;
2419                                                err = smctr_status_chg(dev);
2420                                                break;
2421
2422                                        case 8:
2423                                                tp->join_state = JS_BYPASS_WAIT_STATE;
2424                                                break;
2425                                }
2426                                break ;
2427
2428                        /* Type 0x0E - TRC Initialization Sequence Interrupt
2429                         * Subtype -- 00-FF Initializatin sequence complete
2430                         */
2431                        case ISB_IMC_TRC_INTRNL_TST_STATUS:
2432                                tp->status = INITIALIZED;
2433                                smctr_disable_16bit(dev);
2434                                err = smctr_status_chg(dev);
2435                                smctr_enable_16bit(dev);
2436                                break;
2437
2438                        /* other interrupt types, illegal */
2439                        default:
2440                                break;
2441                }
2442
2443                if(err != SUCCESS)
2444                        break;
2445        }
2446
2447        /* Checking the ack code instead of the unmask bits here is because :
2448         * while fixing the stuck receive, DAT frame are sent and mask off
2449         * FIFO overrun interrupt temporarily (interrupt_unmask_bits = 0)
2450         * but we still want to issue ack to ISB
2451         */
2452        if(!(interrupt_ack_code & 0xff00))
2453                smctr_issue_int_ack(dev, interrupt_ack_code, interrupt_unmask_bits);
2454
2455        smctr_disable_16bit(dev);
2456        smctr_enable_bic_int(dev);
2457        spin_unlock(&tp->lock);
2458
2459        return IRQ_HANDLED;
2460}
2461
2462static int smctr_issue_enable_int_cmd(struct net_device *dev,
2463        __u16 interrupt_enable_mask)
2464{
2465        struct net_local *tp = netdev_priv(dev);
2466        int err;
2467
2468        if((err = smctr_wait_while_cbusy(dev)))
2469                return (err);
2470
2471        tp->sclb_ptr->int_mask_control  = interrupt_enable_mask;
2472        tp->sclb_ptr->valid_command     = SCLB_VALID | SCLB_CMD_CLEAR_INTERRUPT_MASK;
2473
2474        smctr_set_ctrl_attention(dev);
2475
2476        return (0);
2477}
2478
2479static int smctr_issue_int_ack(struct net_device *dev, __u16 iack_code, __u16 ibits)
2480{
2481        struct net_local *tp = netdev_priv(dev);
2482
2483        if(smctr_wait_while_cbusy(dev))
2484                return (-1);
2485
2486        tp->sclb_ptr->int_mask_control = ibits;
2487        tp->sclb_ptr->iack_code = iack_code << 1; /* use the offset from base */        tp->sclb_ptr->resume_control = 0;
2488        tp->sclb_ptr->valid_command = SCLB_VALID | SCLB_IACK_CODE_VALID | SCLB_CMD_CLEAR_INTERRUPT_MASK;
2489
2490        smctr_set_ctrl_attention(dev);
2491
2492        return (0);
2493}
2494
2495static int smctr_issue_init_timers_cmd(struct net_device *dev)
2496{
2497        struct net_local *tp = netdev_priv(dev);
2498        unsigned int i;
2499        int err;
2500        __u16 *pTimer_Struc = (__u16 *)tp->misc_command_data;
2501
2502        if((err = smctr_wait_while_cbusy(dev)))
2503                return (err);
2504
2505        if((err = smctr_wait_cmd(dev)))
2506                return (err);
2507
2508        tp->config_word0 = THDREN | DMA_TRIGGER | USETPT | NO_AUTOREMOVE;
2509        tp->config_word1 = 0;
2510
2511        if((tp->media_type == MEDIA_STP_16)
2512                || (tp->media_type == MEDIA_UTP_16)
2513                || (tp->media_type == MEDIA_STP_16_UTP_16))
2514        {
2515                tp->config_word0 |= FREQ_16MB_BIT;
2516        }
2517
2518        if(tp->mode_bits & EARLY_TOKEN_REL)
2519                tp->config_word0 |= ETREN;
2520
2521        if(tp->mode_bits & LOOPING_MODE_MASK)
2522                tp->config_word0 |= RX_OWN_BIT;
2523        else
2524                tp->config_word0 &= ~RX_OWN_BIT;
2525
2526        if(tp->receive_mask & PROMISCUOUS_MODE)
2527                tp->config_word0 |= PROMISCUOUS_BIT;
2528        else
2529                tp->config_word0 &= ~PROMISCUOUS_BIT;
2530
2531        if(tp->receive_mask & ACCEPT_ERR_PACKETS)
2532                tp->config_word0 |= SAVBAD_BIT;
2533        else
2534                tp->config_word0 &= ~SAVBAD_BIT;
2535
2536        if(tp->receive_mask & ACCEPT_ATT_MAC_FRAMES)
2537                tp->config_word0 |= RXATMAC;
2538        else
2539                tp->config_word0 &= ~RXATMAC;
2540
2541        if(tp->receive_mask & ACCEPT_MULTI_PROM)
2542                tp->config_word1 |= MULTICAST_ADDRESS_BIT;
2543        else
2544                tp->config_word1 &= ~MULTICAST_ADDRESS_BIT;
2545
2546        if(tp->receive_mask & ACCEPT_SOURCE_ROUTING_SPANNING)
2547                tp->config_word1 |= SOURCE_ROUTING_SPANNING_BITS;
2548        else
2549        {
2550                if(tp->receive_mask & ACCEPT_SOURCE_ROUTING)
2551                        tp->config_word1 |= SOURCE_ROUTING_EXPLORER_BIT;
2552                else
2553                        tp->config_word1 &= ~SOURCE_ROUTING_SPANNING_BITS;
2554        }
2555
2556        if((tp->media_type == MEDIA_STP_16)
2557                || (tp->media_type == MEDIA_UTP_16)
2558                || (tp->media_type == MEDIA_STP_16_UTP_16))
2559        {
2560                tp->config_word1 |= INTERFRAME_SPACING_16;
2561        }
2562        else
2563                tp->config_word1 |= INTERFRAME_SPACING_4;
2564
2565        *pTimer_Struc++ = tp->config_word0;
2566        *pTimer_Struc++ = tp->config_word1;
2567
2568        if((tp->media_type == MEDIA_STP_4)
2569                || (tp->media_type == MEDIA_UTP_4)
2570                || (tp->media_type == MEDIA_STP_4_UTP_4))
2571        {
2572                *pTimer_Struc++ = 0x00FA;       /* prescale */
2573                *pTimer_Struc++ = 0x2710;       /* TPT_limit */
2574                *pTimer_Struc++ = 0x2710;       /* TQP_limit */
2575                *pTimer_Struc++ = 0x0A28;       /* TNT_limit */
2576                *pTimer_Struc++ = 0x3E80;       /* TBT_limit */
2577                *pTimer_Struc++ = 0x3A98;       /* TSM_limit */
2578                *pTimer_Struc++ = 0x1B58;       /* TAM_limit */
2579                *pTimer_Struc++ = 0x00C8;       /* TBR_limit */
2580                *pTimer_Struc++ = 0x07D0;       /* TER_limit */
2581                *pTimer_Struc++ = 0x000A;       /* TGT_limit */
2582                *pTimer_Struc++ = 0x1162;       /* THT_limit */
2583                *pTimer_Struc++ = 0x07D0;       /* TRR_limit */
2584                *pTimer_Struc++ = 0x1388;       /* TVX_limit */
2585                *pTimer_Struc++ = 0x0000;       /* reserved */
2586        }
2587        else
2588        {
2589                *pTimer_Struc++ = 0x03E8;       /* prescale */
2590                *pTimer_Struc++ = 0x9C40;       /* TPT_limit */
2591                *pTimer_Struc++ = 0x9C40;       /* TQP_limit */
2592                *pTimer_Struc++ = 0x0A28;       /* TNT_limit */
2593                *pTimer_Struc++ = 0x3E80;       /* TBT_limit */
2594                *pTimer_Struc++ = 0x3A98;       /* TSM_limit */
2595                *pTimer_Struc++ = 0x1B58;       /* TAM_limit */
2596                *pTimer_Struc++ = 0x00C8;       /* TBR_limit */
2597                *pTimer_Struc++ = 0x07D0;       /* TER_limit */
2598                *pTimer_Struc++ = 0x000A;       /* TGT_limit */
2599                *pTimer_Struc++ = 0x4588;       /* THT_limit */
2600                *pTimer_Struc++ = 0x1F40;       /* TRR_limit */
2601                *pTimer_Struc++ = 0x4E20;       /* TVX_limit */
2602                *pTimer_Struc++ = 0x0000;       /* reserved */
2603        }
2604
2605        /* Set node address. */
2606        *pTimer_Struc++ = dev->dev_addr[0] << 8
2607                | (dev->dev_addr[1] & 0xFF);
2608        *pTimer_Struc++ = dev->dev_addr[2] << 8
2609                | (dev->dev_addr[3] & 0xFF);
2610        *pTimer_Struc++ = dev->dev_addr[4] << 8
2611                | (dev->dev_addr[5] & 0xFF);
2612
2613        /* Set group address. */
2614        *pTimer_Struc++ = tp->group_address_0 << 8
2615                | tp->group_address_0 >> 8;
2616        *pTimer_Struc++ = tp->group_address[0] << 8
2617                | tp->group_address[0] >> 8;
2618        *pTimer_Struc++ = tp->group_address[1] << 8
2619                | tp->group_address[1] >> 8;
2620
2621        /* Set functional address. */
2622        *pTimer_Struc++ = tp->functional_address_0 << 8
2623                | tp->functional_address_0 >> 8;
2624        *pTimer_Struc++ = tp->functional_address[0] << 8
2625                | tp->functional_address[0] >> 8;
2626        *pTimer_Struc++ = tp->functional_address[1] << 8
2627                | tp->functional_address[1] >> 8;
2628
2629        /* Set Bit-Wise group address. */
2630        *pTimer_Struc++ = tp->bitwise_group_address[0] << 8
2631                | tp->bitwise_group_address[0] >> 8;
2632        *pTimer_Struc++ = tp->bitwise_group_address[1] << 8
2633                | tp->bitwise_group_address[1] >> 8;
2634
2635        /* Set ring number address. */
2636        *pTimer_Struc++ = tp->source_ring_number;
2637        *pTimer_Struc++ = tp->target_ring_number;
2638
2639        /* Physical drop number. */
2640        *pTimer_Struc++ = (unsigned short)0;
2641        *pTimer_Struc++ = (unsigned short)0;
2642
2643        /* Product instance ID. */
2644        for(i = 0; i < 9; i++)
2645                *pTimer_Struc++ = (unsigned short)0;
2646
2647        err = smctr_setup_single_cmd_w_data(dev, ACB_CMD_INIT_TRC_TIMERS, 0);
2648
2649        return (err);
2650}
2651
2652static int smctr_issue_init_txrx_cmd(struct net_device *dev)
2653{
2654        struct net_local *tp = netdev_priv(dev);
2655        unsigned int i;
2656        int err;
2657        void **txrx_ptrs = (void *)tp->misc_command_data;
2658
2659        if((err = smctr_wait_while_cbusy(dev)))
2660                return (err);
2661
2662        if((err = smctr_wait_cmd(dev)))
2663        {
2664                printk(KERN_ERR "%s: Hardware failure\n", dev->name);
2665                return (err);
2666        }
2667
2668        /* Initialize Transmit Queue Pointers that are used, to point to
2669         * a single FCB.
2670         */
2671        for(i = 0; i < NUM_TX_QS_USED; i++)
2672                *txrx_ptrs++ = (void *)TRC_POINTER(tp->tx_fcb_head[i]);
2673
2674        /* Initialize Transmit Queue Pointers that are NOT used to ZERO. */
2675        for(; i < MAX_TX_QS; i++)
2676                *txrx_ptrs++ = (void *)0;
2677
2678        /* Initialize Receive Queue Pointers (MAC and Non-MAC) that are
2679         * used, to point to a single FCB and a BDB chain of buffers.
2680         */
2681        for(i = 0; i < NUM_RX_QS_USED; i++)
2682        {
2683                *txrx_ptrs++ = (void *)TRC_POINTER(tp->rx_fcb_head[i]);
2684                *txrx_ptrs++ = (void *)TRC_POINTER(tp->rx_bdb_head[i]);
2685        }
2686
2687        /* Initialize Receive Queue Pointers that are NOT used to ZERO. */
2688        for(; i < MAX_RX_QS; i++)
2689        {
2690                *txrx_ptrs++ = (void *)0;
2691                *txrx_ptrs++ = (void *)0;
2692        }
2693
2694        err = smctr_setup_single_cmd_w_data(dev, ACB_CMD_INIT_TX_RX, 0);
2695
2696        return (err);
2697}
2698
2699static int smctr_issue_insert_cmd(struct net_device *dev)
2700{
2701        int err;
2702
2703        err = smctr_setup_single_cmd(dev, ACB_CMD_INSERT, ACB_SUB_CMD_NOP);
2704
2705        return (err);
2706}
2707
2708static int smctr_issue_read_ring_status_cmd(struct net_device *dev)
2709{
2710        int err;
2711
2712        if((err = smctr_wait_while_cbusy(dev)))
2713                return (err);
2714
2715        if((err = smctr_wait_cmd(dev)))
2716                return (err);
2717
2718        err = smctr_setup_single_cmd_w_data(dev, ACB_CMD_READ_TRC_STATUS,
2719                RW_TRC_STATUS_BLOCK);
2720
2721        return (err);
2722}
2723
2724static int smctr_issue_read_word_cmd(struct net_device *dev, __u16 aword_cnt)
2725{
2726        int err;
2727
2728        if((err = smctr_wait_while_cbusy(dev)))
2729                return (err);
2730
2731        if((err = smctr_wait_cmd(dev)))
2732                return (err);
2733
2734        err = smctr_setup_single_cmd_w_data(dev, ACB_CMD_MCT_READ_VALUE,
2735                aword_cnt);
2736
2737        return (err);
2738}
2739
2740static int smctr_issue_remove_cmd(struct net_device *dev)
2741{
2742        struct net_local *tp = netdev_priv(dev);
2743        int err;
2744
2745        if((err = smctr_wait_while_cbusy(dev)))
2746                return (err);
2747
2748        tp->sclb_ptr->resume_control    = 0;
2749        tp->sclb_ptr->valid_command     = SCLB_VALID | SCLB_CMD_REMOVE;
2750
2751        smctr_set_ctrl_attention(dev);
2752
2753        return (0);
2754}
2755
2756static int smctr_issue_resume_acb_cmd(struct net_device *dev)
2757{
2758        struct net_local *tp = netdev_priv(dev);
2759        int err;
2760
2761        if((err = smctr_wait_while_cbusy(dev)))
2762                return (err);
2763
2764        tp->sclb_ptr->resume_control = SCLB_RC_ACB;
2765        tp->sclb_ptr->valid_command  = SCLB_VALID | SCLB_RESUME_CONTROL_VALID;
2766
2767        tp->acb_pending = 1;
2768
2769        smctr_set_ctrl_attention(dev);
2770
2771        return (0);
2772}
2773
2774static int smctr_issue_resume_rx_bdb_cmd(struct net_device *dev, __u16 queue)
2775{
2776        struct net_local *tp = netdev_priv(dev);
2777        int err;
2778
2779        if((err = smctr_wait_while_cbusy(dev)))
2780                return (err);
2781
2782        if(queue == MAC_QUEUE)
2783                tp->sclb_ptr->resume_control = SCLB_RC_RX_MAC_BDB;
2784        else
2785                tp->sclb_ptr->resume_control = SCLB_RC_RX_NON_MAC_BDB;
2786
2787        tp->sclb_ptr->valid_command = SCLB_VALID | SCLB_RESUME_CONTROL_VALID;
2788
2789        smctr_set_ctrl_attention(dev);
2790
2791        return (0);
2792}
2793
2794static int smctr_issue_resume_rx_fcb_cmd(struct net_device *dev, __u16 queue)
2795{
2796        struct net_local *tp = netdev_priv(dev);
2797
2798        if(smctr_debug > 10)
2799                printk(KERN_DEBUG "%s: smctr_issue_resume_rx_fcb_cmd\n", dev->name);
2800
2801        if(smctr_wait_while_cbusy(dev))
2802                return (-1);
2803
2804        if(queue == MAC_QUEUE)
2805                tp->sclb_ptr->resume_control = SCLB_RC_RX_MAC_FCB;
2806        else
2807                tp->sclb_ptr->resume_control = SCLB_RC_RX_NON_MAC_FCB;
2808
2809        tp->sclb_ptr->valid_command = SCLB_VALID | SCLB_RESUME_CONTROL_VALID;
2810
2811        smctr_set_ctrl_attention(dev);
2812
2813        return (0);
2814}
2815
2816static int smctr_issue_resume_tx_fcb_cmd(struct net_device *dev, __u16 queue)
2817{
2818        struct net_local *tp = netdev_priv(dev);
2819
2820        if(smctr_debug > 10)
2821                printk(KERN_DEBUG "%s: smctr_issue_resume_tx_fcb_cmd\n", dev->name);
2822
2823        if(smctr_wait_while_cbusy(dev))
2824                return (-1);
2825
2826        tp->sclb_ptr->resume_control = (SCLB_RC_TFCB0 << queue);
2827        tp->sclb_ptr->valid_command = SCLB_RESUME_CONTROL_VALID | SCLB_VALID;
2828
2829        smctr_set_ctrl_attention(dev);
2830
2831        return (0);
2832}
2833
2834static int smctr_issue_test_internal_rom_cmd(struct net_device *dev)
2835{
2836        int err;
2837
2838        err = smctr_setup_single_cmd(dev, ACB_CMD_MCT_TEST,
2839                TRC_INTERNAL_ROM_TEST);
2840
2841        return (err);
2842}
2843
2844static int smctr_issue_test_hic_cmd(struct net_device *dev)
2845{
2846        int err;
2847
2848        err = smctr_setup_single_cmd(dev, ACB_CMD_HIC_TEST,
2849                TRC_HOST_INTERFACE_REG_TEST);
2850
2851        return (err);
2852}
2853
2854static int smctr_issue_test_mac_reg_cmd(struct net_device *dev)
2855{
2856        int err;
2857
2858        err = smctr_setup_single_cmd(dev, ACB_CMD_MCT_TEST,
2859                TRC_MAC_REGISTERS_TEST);
2860
2861        return (err);
2862}
2863
2864static int smctr_issue_trc_loopback_cmd(struct net_device *dev)
2865{
2866        int err;
2867
2868        err = smctr_setup_single_cmd(dev, ACB_CMD_MCT_TEST,
2869                TRC_INTERNAL_LOOPBACK);
2870
2871        return (err);
2872}
2873
2874static int smctr_issue_tri_loopback_cmd(struct net_device *dev)
2875{
2876        int err;
2877
2878        err = smctr_setup_single_cmd(dev, ACB_CMD_MCT_TEST,
2879                TRC_TRI_LOOPBACK);
2880
2881        return (err);
2882}
2883
2884static int smctr_issue_write_byte_cmd(struct net_device *dev,
2885        short aword_cnt, void *byte)
2886{
2887        struct net_local *tp = netdev_priv(dev);
2888        unsigned int iword, ibyte;
2889        int err;
2890
2891        if((err = smctr_wait_while_cbusy(dev)))
2892                return (err);
2893
2894        if((err = smctr_wait_cmd(dev)))
2895                return (err);
2896
2897        for(iword = 0, ibyte = 0; iword < (unsigned int)(aword_cnt & 0xff);
2898                iword++, ibyte += 2)
2899        {
2900                tp->misc_command_data[iword] = (*((__u8 *)byte + ibyte) << 8)
2901                        | (*((__u8 *)byte + ibyte + 1));
2902        }
2903
2904        return (smctr_setup_single_cmd_w_data(dev, ACB_CMD_MCT_WRITE_VALUE, 
2905                aword_cnt));
2906}
2907
2908static int smctr_issue_write_word_cmd(struct net_device *dev,
2909        short aword_cnt, void *word)
2910{
2911        struct net_local *tp = netdev_priv(dev);
2912        unsigned int i, err;
2913
2914        if((err = smctr_wait_while_cbusy(dev)))
2915                return (err);
2916
2917        if((err = smctr_wait_cmd(dev)))
2918                return (err);
2919
2920        for(i = 0; i < (unsigned int)(aword_cnt & 0xff); i++)
2921                tp->misc_command_data[i] = *((__u16 *)word + i);
2922
2923        err = smctr_setup_single_cmd_w_data(dev, ACB_CMD_MCT_WRITE_VALUE,
2924                aword_cnt);
2925
2926        return (err);
2927}
2928
2929static int smctr_join_complete_state(struct net_device *dev)
2930{
2931        int err;
2932
2933        err = smctr_setup_single_cmd(dev, ACB_CMD_CHANGE_JOIN_STATE,
2934                JS_JOIN_COMPLETE_STATE);
2935
2936        return (err);
2937}
2938
2939static int smctr_link_tx_fcbs_to_bdbs(struct net_device *dev)
2940{
2941        struct net_local *tp = netdev_priv(dev);
2942        unsigned int i, j;
2943        FCBlock *fcb;
2944        BDBlock *bdb;
2945
2946        for(i = 0; i < NUM_TX_QS_USED; i++)
2947        {
2948                fcb = tp->tx_fcb_head[i];
2949                bdb = tp->tx_bdb_head[i];
2950
2951                for(j = 0; j < tp->num_tx_fcbs[i]; j++)
2952                {
2953                        fcb->bdb_ptr            = bdb;
2954                        fcb->trc_bdb_ptr        = TRC_POINTER(bdb);
2955                        fcb = (FCBlock *)((char *)fcb + sizeof(FCBlock));
2956                        bdb = (BDBlock *)((char *)bdb + sizeof(BDBlock));
2957                }
2958        }
2959
2960        return (0);
2961}
2962
2963static int smctr_load_firmware(struct net_device *dev)
2964{
2965        struct net_local *tp = netdev_priv(dev);
2966        __u16 i, checksum = 0;
2967        int err = 0;
2968
2969        if(smctr_debug > 10)
2970                printk(KERN_DEBUG "%s: smctr_load_firmware\n", dev->name);
2971
2972        tp->ptr_ucode           = smctr_code;
2973        tp->num_of_tx_buffs     = 4;
2974        tp->mode_bits          |= UMAC;
2975        tp->receive_mask        = 0;
2976        tp->max_packet_size     = 4177;
2977
2978        /* Can only upload the firmware once per adapter reset. */
2979        if(tp->microcode_version != 0)
2980                return (UCODE_PRESENT);
2981
2982        /* Verify the firmware exists and is there in the right amount. */
2983        if((tp->ptr_ucode == 0L)
2984                || (*(tp->ptr_ucode + UCODE_VERSION_OFFSET) < UCODE_VERSION))
2985        {
2986                return (UCODE_NOT_PRESENT);
2987        }
2988
2989        /* UCODE_SIZE is not included in Checksum. */
2990        for(i = 0; i < *((__u16 *)(tp->ptr_ucode + UCODE_SIZE_OFFSET)); i += 2)
2991                checksum += *((__u16 *)(tp->ptr_ucode + 2 + i));
2992        if(checksum)
2993                return (UCODE_NOT_PRESENT);
2994
2995        /* At this point we have a valid firmware image, lets kick it on up. */
2996        smctr_enable_adapter_ram(dev);
2997        smctr_enable_16bit(dev);
2998        smctr_set_page(dev, (__u8 *)tp->ram_access);
2999
3000        if((smctr_checksum_firmware(dev))
3001                || (*(tp->ptr_ucode + UCODE_VERSION_OFFSET)
3002                > tp->microcode_version))
3003        {
3004                smctr_enable_adapter_ctrl_store(dev);
3005
3006                /* Zero out ram space for firmware. */
3007                for(i = 0; i < CS_RAM_SIZE; i += 2)
3008                        *((__u16 *)(tp->ram_access + i)) = 0;
3009
3010                smctr_decode_firmware(dev);
3011
3012                tp->microcode_version = *(tp->ptr_ucode + UCODE_VERSION_OFFSET);                *((__u16 *)(tp->ram_access + CS_RAM_VERSION_OFFSET))
3013                        = (tp->microcode_version << 8);
3014                *((__u16 *)(tp->ram_access + CS_RAM_CHECKSUM_OFFSET))
3015                        = ~(tp->microcode_version << 8) + 1;
3016
3017                smctr_disable_adapter_ctrl_store(dev);
3018
3019                if(smctr_checksum_firmware(dev))
3020                        err = HARDWARE_FAILED;
3021        }
3022        else
3023                err = UCODE_PRESENT;
3024
3025        smctr_disable_16bit(dev);
3026
3027        return (err);
3028}
3029
3030static int smctr_load_node_addr(struct net_device *dev)
3031{
3032        int ioaddr = dev->base_addr;
3033        unsigned int i;
3034        __u8 r;
3035
3036        for(i = 0; i < 6; i++)
3037        {
3038                r = inb(ioaddr + LAR0 + i);
3039                dev->dev_addr[i] = (char)r;
3040        }
3041        dev->addr_len = 6;
3042
3043        return (0);
3044}
3045
3046/* Lobe Media Test.
3047 * During the transmission of the initial 1500 lobe media MAC frames,
3048 * the phase lock loop in the 805 chip may lock, and then un-lock, causing
3049 * the 825 to go into a PURGE state. When performing a PURGE, the MCT
3050 * microcode will not transmit any frames given to it by the host, and
3051 * will consequently cause a timeout.
3052 *
3053 * NOTE 1: If the monitor_state is MS_BEACON_TEST_STATE, all transmit
3054 * queues other then the one used for the lobe_media_test should be
3055 * disabled.!?
3056 *
3057 * NOTE 2: If the monitor_state is MS_BEACON_TEST_STATE and the receive_mask
3058 * has any multi-cast or promiscous bits set, the receive_mask needs to
3059 * be changed to clear the multi-cast or promiscous mode bits, the lobe_test
3060 * run, and then the receive mask set back to its original value if the test
3061 * is successful.
3062 */
3063static int smctr_lobe_media_test(struct net_device *dev)
3064{
3065        struct net_local *tp = netdev_priv(dev);
3066        unsigned int i, perror = 0;
3067        unsigned short saved_rcv_mask;
3068
3069        if(smctr_debug > 10)
3070                printk(KERN_DEBUG "%s: smctr_lobe_media_test\n", dev->name);
3071
3072        /* Clear receive mask for lobe test. */
3073        saved_rcv_mask          = tp->receive_mask;
3074        tp->receive_mask        = 0;
3075
3076        smctr_chg_rx_mask(dev);
3077
3078        /* Setup the lobe media test. */
3079        smctr_lobe_media_test_cmd(dev);
3080        if(smctr_wait_cmd(dev))
3081        {
3082                smctr_reset_adapter(dev);
3083                tp->status = CLOSED;
3084                return (LOBE_MEDIA_TEST_FAILED);
3085        }
3086
3087        /* Tx lobe media test frames. */
3088        for(i = 0; i < 1500; ++i)
3089        {
3090                if(smctr_send_lobe_media_test(dev))
3091                {
3092                        if(perror)
3093                        {
3094                                smctr_reset_adapter(dev);
3095                                tp->state = CLOSED;
3096                                return (LOBE_MEDIA_TEST_FAILED);
3097                        }
3098                        else
3099                        {
3100                                perror = 1;
3101                                if(smctr_lobe_media_test_cmd(dev))
3102                                {
3103                                        smctr_reset_adapter(dev);
3104                                        tp->state = CLOSED;
3105                                        return (LOBE_MEDIA_TEST_FAILED);
3106                                }
3107                        }
3108                }
3109        }
3110
3111        if(smctr_send_dat(dev))
3112        {
3113                if(smctr_send_dat(dev))
3114                {
3115                        smctr_reset_adapter(dev);
3116                        tp->state = CLOSED;
3117                        return (LOBE_MEDIA_TEST_FAILED);
3118                }
3119        }
3120
3121        /* Check if any frames received during test. */
3122        if((tp->rx_fcb_curr[MAC_QUEUE]->frame_status)
3123                || (tp->rx_fcb_curr[NON_MAC_QUEUE]->frame_status))
3124        {
3125                smctr_reset_adapter(dev);
3126                tp->state = CLOSED;
3127                return (LOBE_MEDIA_TEST_FAILED);
3128        }
3129
3130        /* Set receive mask to "Promisc" mode. */
3131        tp->receive_mask = saved_rcv_mask;
3132
3133        smctr_chg_rx_mask(dev);
3134
3135        return (0);
3136}
3137
3138static int smctr_lobe_media_test_cmd(struct net_device *dev)
3139{
3140        struct net_local *tp = netdev_priv(dev);
3141        int err;
3142
3143        if(smctr_debug > 10)
3144                printk(KERN_DEBUG "%s: smctr_lobe_media_test_cmd\n", dev->name);
3145
3146        /* Change to lobe media test state. */
3147        if(tp->monitor_state != MS_BEACON_TEST_STATE)
3148        {
3149                smctr_lobe_media_test_state(dev);
3150                if(smctr_wait_cmd(dev))
3151                {
3152                        printk(KERN_ERR "Lobe Failed test state\n");
3153                        return (LOBE_MEDIA_TEST_FAILED);
3154                }
3155        }
3156
3157        err = smctr_setup_single_cmd(dev, ACB_CMD_MCT_TEST,
3158                TRC_LOBE_MEDIA_TEST);
3159
3160        return (err);
3161}
3162
3163static int smctr_lobe_media_test_state(struct net_device *dev)
3164{
3165        int err;
3166
3167        err = smctr_setup_single_cmd(dev, ACB_CMD_CHANGE_JOIN_STATE,
3168                JS_LOBE_TEST_STATE);
3169
3170        return (err);
3171}
3172
3173static int smctr_make_8025_hdr(struct net_device *dev,
3174        MAC_HEADER *rmf, MAC_HEADER *tmf, __u16 ac_fc)
3175{
3176        tmf->ac = MSB(ac_fc);                 /* msb is access control */
3177        tmf->fc = LSB(ac_fc);                 /* lsb is frame control */
3178
3179        tmf->sa[0] = dev->dev_addr[0];
3180        tmf->sa[1] = dev->dev_addr[1];
3181        tmf->sa[2] = dev->dev_addr[2];
3182        tmf->sa[3] = dev->dev_addr[3];
3183        tmf->sa[4] = dev->dev_addr[4];
3184        tmf->sa[5] = dev->dev_addr[5];
3185
3186        switch(tmf->vc)
3187        {
3188                /* Send RQ_INIT to RPS */
3189                case RQ_INIT:
3190                        tmf->da[0] = 0xc0;
3191                        tmf->da[1] = 0x00;
3192                        tmf->da[2] = 0x00;
3193                        tmf->da[3] = 0x00;
3194                        tmf->da[4] = 0x00;
3195                        tmf->da[5] = 0x02;
3196                        break;
3197
3198                /* Send RPT_TX_FORWARD to CRS */
3199                case RPT_TX_FORWARD:
3200                        tmf->da[0] = 0xc0;
3201                        tmf->da[1] = 0x00;
3202                        tmf->da[2] = 0x00;
3203                        tmf->da[3] = 0x00;
3204                        tmf->da[4] = 0x00;
3205                        tmf->da[5] = 0x10;
3206                        break;
3207
3208                /* Everything else goes to sender */
3209                default:
3210                        tmf->da[0] = rmf->sa[0];
3211                        tmf->da[1] = rmf->sa[1];
3212                        tmf->da[2] = rmf->sa[2];
3213                        tmf->da[3] = rmf->sa[3];
3214                        tmf->da[4] = rmf->sa[4];
3215                        tmf->da[5] = rmf->sa[5];
3216                        break;
3217        }
3218
3219        return (0);
3220}
3221
3222static int smctr_make_access_pri(struct net_device *dev, MAC_SUB_VECTOR *tsv)
3223{
3224        struct net_local *tp = netdev_priv(dev);
3225
3226        tsv->svi = AUTHORIZED_ACCESS_PRIORITY;
3227        tsv->svl = S_AUTHORIZED_ACCESS_PRIORITY;
3228
3229        tsv->svv[0] = MSB(tp->authorized_access_priority);
3230        tsv->svv[1] = LSB(tp->authorized_access_priority);
3231
3232        return (0);
3233}
3234
3235static int smctr_make_addr_mod(struct net_device *dev, MAC_SUB_VECTOR *tsv)
3236{
3237        tsv->svi = ADDRESS_MODIFER;
3238        tsv->svl = S_ADDRESS_MODIFER;
3239
3240        tsv->svv[0] = 0;
3241        tsv->svv[1] = 0;
3242
3243        return (0);
3244}
3245
3246static int smctr_make_auth_funct_class(struct net_device *dev,
3247        MAC_SUB_VECTOR *tsv)
3248{
3249        struct net_local *tp = netdev_priv(dev);
3250
3251        tsv->svi = AUTHORIZED_FUNCTION_CLASS;
3252        tsv->svl = S_AUTHORIZED_FUNCTION_CLASS;
3253
3254        tsv->svv[0] = MSB(tp->authorized_function_classes);
3255        tsv->svv[1] = LSB(tp->authorized_function_classes);
3256
3257        return (0);
3258}
3259
3260static int smctr_make_corr(struct net_device *dev,
3261        MAC_SUB_VECTOR *tsv, __u16 correlator)
3262{
3263        tsv->svi = CORRELATOR;
3264        tsv->svl = S_CORRELATOR;
3265
3266        tsv->svv[0] = MSB(correlator);
3267        tsv->svv[1] = LSB(correlator);
3268
3269        return (0);
3270}
3271
3272static int smctr_make_funct_addr(struct net_device *dev, MAC_SUB_VECTOR *tsv)
3273{
3274        struct net_local *tp = netdev_priv(dev);
3275
3276        smctr_get_functional_address(dev);
3277
3278        tsv->svi = FUNCTIONAL_ADDRESS;
3279        tsv->svl = S_FUNCTIONAL_ADDRESS;
3280
3281        tsv->svv[0] = MSB(tp->misc_command_data[0]);
3282        tsv->svv[1] = LSB(tp->misc_command_data[0]);
3283
3284        tsv->svv[2] = MSB(tp->misc_command_data[1]);
3285        tsv->svv[3] = LSB(tp->misc_command_data[1]);
3286
3287        return (0);
3288}
3289
3290static int smctr_make_group_addr(struct net_device *dev, MAC_SUB_VECTOR *tsv)
3291{
3292        struct net_local *tp = netdev_priv(dev);
3293
3294        smctr_get_group_address(dev);
3295
3296        tsv->svi = GROUP_ADDRESS;
3297        tsv->svl = S_GROUP_ADDRESS;
3298
3299        tsv->svv[0] = MSB(tp->misc_command_data[0]);
3300        tsv->svv[1] = LSB(tp->misc_command_data[0]);
3301
3302        tsv->svv[2] = MSB(tp->misc_command_data[1]);
3303        tsv->svv[3] = LSB(tp->misc_command_data[1]);
3304
3305        /* Set Group Address Sub-vector to all zeros if only the
3306         * Group Address/Functional Address Indicator is set.
3307         */
3308        if(tsv->svv[0] == 0x80 && tsv->svv[1] == 0x00
3309                && tsv->svv[2] == 0x00 && tsv->svv[3] == 0x00)
3310                tsv->svv[0] = 0x00;
3311
3312        return (0);
3313}
3314
3315static int smctr_make_phy_drop_num(struct net_device *dev,
3316        MAC_SUB_VECTOR *tsv)
3317{
3318        struct net_local *tp = netdev_priv(dev);
3319
3320        smctr_get_physical_drop_number(dev);
3321
3322        tsv->svi = PHYSICAL_DROP;
3323        tsv->svl = S_PHYSICAL_DROP;
3324
3325        tsv->svv[0] = MSB(tp->misc_command_data[0]);
3326        tsv->svv[1] = LSB(tp->misc_command_data[0]);
3327
3328        tsv->svv[2] = MSB(tp->misc_command_data[1]);
3329        tsv->svv[3] = LSB(tp->misc_command_data[1]);
3330
3331        return (0);
3332}
3333
3334static int smctr_make_product_id(struct net_device *dev, MAC_SUB_VECTOR *tsv)
3335{
3336        int i;
3337
3338        tsv->svi = PRODUCT_INSTANCE_ID;
3339        tsv->svl = S_PRODUCT_INSTANCE_ID;
3340
3341        for(i = 0; i < 18; i++)
3342                tsv->svv[i] = 0xF0;
3343
3344        return (0);
3345}
3346
3347static int smctr_make_station_id(struct net_device *dev, MAC_SUB_VECTOR *tsv)
3348{
3349        struct net_local *tp = netdev_priv(dev);
3350
3351        smctr_get_station_id(dev);
3352
3353        tsv->svi = STATION_IDENTIFER;
3354        tsv->svl = S_STATION_IDENTIFER;
3355
3356        tsv->svv[0] = MSB(tp->misc_command_data[0]);
3357        tsv->svv[1] = LSB(tp->misc_command_data[0]);
3358
3359        tsv->svv[2] = MSB(tp->misc_command_data[1]);
3360        tsv->svv[3] = LSB(tp->misc_command_data[1]);
3361
3362        tsv->svv[4] = MSB(tp->misc_command_data[2]);
3363        tsv->svv[5] = LSB(tp->misc_command_data[2]);
3364
3365        return (0);
3366}
3367
3368static int smctr_make_ring_station_status(struct net_device *dev,
3369        MAC_SUB_VECTOR * tsv)
3370{
3371        tsv->svi = RING_STATION_STATUS;
3372        tsv->svl = S_RING_STATION_STATUS;
3373
3374        tsv->svv[0] = 0;
3375        tsv->svv[1] = 0;
3376        tsv->svv[2] = 0;
3377        tsv->svv[3] = 0;
3378        tsv->svv[4] = 0;
3379        tsv->svv[5] = 0;
3380
3381        return (0);
3382}
3383
3384static int smctr_make_ring_station_version(struct net_device *dev,
3385        MAC_SUB_VECTOR *tsv)
3386{
3387        struct net_local *tp = netdev_priv(dev);
3388
3389        tsv->svi = RING_STATION_VERSION_NUMBER;
3390        tsv->svl = S_RING_STATION_VERSION_NUMBER;
3391
3392        tsv->svv[0] = 0xe2;            /* EBCDIC - S */
3393        tsv->svv[1] = 0xd4;            /* EBCDIC - M */
3394        tsv->svv[2] = 0xc3;            /* EBCDIC - C */
3395        tsv->svv[3] = 0x40;            /* EBCDIC -   */
3396        tsv->svv[4] = 0xe5;            /* EBCDIC - V */
3397        tsv->svv[5] = 0xF0 + (tp->microcode_version >> 4);
3398        tsv->svv[6] = 0xF0 + (tp->microcode_version & 0x0f);
3399        tsv->svv[7] = 0x40;            /* EBCDIC -   */
3400        tsv->svv[8] = 0xe7;            /* EBCDIC - X */
3401
3402        if(tp->extra_info & CHIP_REV_MASK)
3403                tsv->svv[9] = 0xc5;    /* EBCDIC - E */
3404        else
3405                tsv->svv[9] = 0xc4;    /* EBCDIC - D */
3406
3407        return (0);
3408}
3409
3410static int smctr_make_tx_status_code(struct net_device *dev,
3411        MAC_SUB_VECTOR *tsv, __u16 tx_fstatus)
3412{
3413        tsv->svi = TRANSMIT_STATUS_CODE;
3414        tsv->svl = S_TRANSMIT_STATUS_CODE;
3415
3416        tsv->svv[0] = ((tx_fstatus & 0x0100 >> 6) || IBM_PASS_SOURCE_ADDR);
3417
3418        /* Stripped frame status of Transmitted Frame */
3419        tsv->svv[1] = tx_fstatus & 0xff;
3420
3421        return (0);
3422}
3423
3424static int smctr_make_upstream_neighbor_addr(struct net_device *dev,
3425        MAC_SUB_VECTOR *tsv)
3426{
3427        struct net_local *tp = netdev_priv(dev);
3428
3429        smctr_get_upstream_neighbor_addr(dev);
3430
3431        tsv->svi = UPSTREAM_NEIGHBOR_ADDRESS;
3432        tsv->svl = S_UPSTREAM_NEIGHBOR_ADDRESS;
3433
3434        tsv->svv[0] = MSB(tp->misc_command_data[0]);
3435        tsv->svv[1] = LSB(tp->misc_command_data[0]);
3436
3437        tsv->svv[2] = MSB(tp->misc_command_data[1]);
3438        tsv->svv[3] = LSB(tp->misc_command_data[1]);
3439
3440        tsv->svv[4] = MSB(tp->misc_command_data[2]);
3441        tsv->svv[5] = LSB(tp->misc_command_data[2]);
3442
3443        return (0);
3444}
3445
3446static int smctr_make_wrap_data(struct net_device *dev, MAC_SUB_VECTOR *tsv)
3447{
3448        tsv->svi = WRAP_DATA;
3449        tsv->svl = S_WRAP_DATA;
3450
3451        return (0);
3452}
3453
3454/*
3455 * Open/initialize the board. This is called sometime after
3456 * booting when the 'ifconfig' program is run.
3457 *
3458 * This routine should set everything up anew at each open, even
3459 * registers that "should" only need to be set once at boot, so that
3460 * there is non-reboot way to recover if something goes wrong.
3461 */
3462static int smctr_open(struct net_device *dev)
3463{
3464        int err;
3465
3466        if(smctr_debug > 10)
3467                printk(KERN_DEBUG "%s: smctr_open\n", dev->name);
3468
3469        err = smctr_init_adapter(dev);
3470        if(err < 0)
3471                return (err);
3472
3473        return (err);
3474}
3475
3476/* Interrupt driven open of Token card. */
3477static int smctr_open_tr(struct net_device *dev)
3478{
3479        struct net_local *tp = netdev_priv(dev);
3480        unsigned long flags;
3481        int err;
3482
3483        if(smctr_debug > 10)
3484                printk(KERN_DEBUG "%s: smctr_open_tr\n", dev->name);
3485
3486        /* Now we can actually open the adapter. */
3487        if(tp->status == OPEN)
3488                return (0);
3489        if(tp->status != INITIALIZED)
3490                return (-1);
3491
3492        /* FIXME: it would work a lot better if we masked the irq sources
3493           on the card here, then we could skip the locking and poll nicely */
3494        spin_lock_irqsave(&tp->lock, flags);
3495        
3496        smctr_set_page(dev, (__u8 *)tp->ram_access);
3497
3498        if((err = smctr_issue_resume_rx_fcb_cmd(dev, (short)MAC_QUEUE)))
3499                goto out;
3500
3501        if((err = smctr_issue_resume_rx_bdb_cmd(dev, (short)MAC_QUEUE)))
3502                goto out;
3503
3504        if((err = smctr_issue_resume_rx_fcb_cmd(dev, (short)NON_MAC_QUEUE)))
3505                goto out;
3506
3507        if((err = smctr_issue_resume_rx_bdb_cmd(dev, (short)NON_MAC_QUEUE)))
3508                goto out;
3509
3510        tp->status = CLOSED;
3511
3512        /* Insert into the Ring or Enter Loopback Mode. */
3513        if((tp->mode_bits & LOOPING_MODE_MASK) == LOOPBACK_MODE_1)
3514        {
3515                tp->status = CLOSED;
3516
3517                if(!(err = smctr_issue_trc_loopback_cmd(dev)))
3518                {
3519                        if(!(err = smctr_wait_cmd(dev)))
3520                                tp->status = OPEN;
3521                }
3522
3523                smctr_status_chg(dev);
3524        }
3525        else
3526        {
3527                if((tp->mode_bits & LOOPING_MODE_MASK) == LOOPBACK_MODE_2)
3528                {
3529                        tp->status = CLOSED;
3530                        if(!(err = smctr_issue_tri_loopback_cmd(dev)))
3531                        {
3532                                if(!(err = smctr_wait_cmd(dev)))
3533                                        tp->status = OPEN;
3534                        }
3535
3536                        smctr_status_chg(dev);
3537                }
3538                else
3539                {
3540                        if((tp->mode_bits & LOOPING_MODE_MASK)
3541                                == LOOPBACK_MODE_3)
3542                        {
3543                                tp->status = CLOSED;
3544                                if(!(err = smctr_lobe_media_test_cmd(dev)))
3545                                {
3546                                        if(!(err = smctr_wait_cmd(dev)))
3547                                                tp->status = OPEN;
3548                                }
3549                                smctr_status_chg(dev);
3550                        }
3551                        else
3552                        {
3553                                if(!(err = smctr_lobe_media_test(dev)))
3554                                        err = smctr_issue_insert_cmd(dev);
3555                                else
3556                                {
3557                                        if(err == LOBE_MEDIA_TEST_FAILED)
3558                                                printk(KERN_WARNING "%s: Lobe Media Test Failure - Check cable?\n", dev->name);
3559                                }
3560                        }
3561                }
3562        }
3563
3564out:
3565        spin_unlock_irqrestore(&tp->lock, flags);
3566
3567        return (err);
3568}
3569
3570/* Check for a network adapter of this type, 
3571 * and return device structure if one exists.
3572 */
3573struct net_device __init *smctr_probe(int unit)
3574{
3575        struct net_device *dev = alloc_trdev(sizeof(struct net_local));
3576        static const unsigned ports[] = {
3577                0x200, 0x220, 0x240, 0x260, 0x280, 0x2A0, 0x2C0, 0x2E0, 0x300,
3578                0x320, 0x340, 0x360, 0x380, 0
3579        };
3580        const unsigned *port;
3581        int err = 0;
3582
3583        if (!dev)
3584                return ERR_PTR(-ENOMEM);
3585
3586        if (unit >= 0) {
3587                sprintf(dev->name, "tr%d", unit);
3588                netdev_boot_setup_check(dev);
3589        }
3590
3591        if (dev->base_addr > 0x1ff)    /* Check a single specified location. */
3592                err = smctr_probe1(dev, dev->base_addr);
3593        else if(dev->base_addr != 0)  /* Don't probe at all. */
3594                err =-ENXIO;
3595        else {
3596                for (port = ports; *port; port++) {
3597                        err = smctr_probe1(dev, *port);
3598                        if (!err)
3599                                break;
3600                }
3601        }
3602        if (err)
3603                goto out;
3604        err = register_netdev(dev);
3605        if (err)
3606                goto out1;
3607        return dev;
3608out1:
3609#ifdef CONFIG_MCA_LEGACY
3610        { struct net_local *tp = netdev_priv(dev);
3611          if (tp->slot_num)
3612                mca_mark_as_unused(tp->slot_num);
3613        }
3614#endif
3615        release_region(dev->base_addr, SMCTR_IO_EXTENT);
3616        free_irq(dev->irq, dev);
3617out:
3618        free_netdev(dev);
3619        return ERR_PTR(err);
3620}
3621
3622
3623static int __init smctr_probe1(struct net_device *dev, int ioaddr)
3624{
3625        static unsigned version_printed;
3626        struct net_local *tp = netdev_priv(dev);
3627        int err;
3628        __u32 *ram;
3629
3630        if(smctr_debug && version_printed++ == 0)
3631                printk(version);
3632
3633        spin_lock_init(&tp->lock);
3634        dev->base_addr = ioaddr;
3635
3636        /* Actually detect an adapter now. */
3637        err = smctr_chk_isa(dev);
3638        if(err < 0)
3639        {
3640                if ((err = smctr_chk_mca(dev)) < 0) {
3641                        err = -ENODEV;
3642                        goto out;
3643                }
3644        }
3645
3646        tp = netdev_priv(dev);
3647        dev->mem_start = tp->ram_base;
3648        dev->mem_end = dev->mem_start + 0x10000;
3649        ram = (__u32 *)phys_to_virt(dev->mem_start);
3650        tp->ram_access = *(__u32 *)&ram;
3651        tp->status = NOT_INITIALIZED;
3652
3653        err = smctr_load_firmware(dev);
3654        if(err != UCODE_PRESENT && err != SUCCESS)
3655        {
3656                printk(KERN_ERR "%s: Firmware load failed (%d)\n", dev->name, err);
3657                err = -EIO;
3658                goto out;
3659        }
3660
3661        /* Allow user to specify ring speed on module insert. */
3662        if(ringspeed == 4)
3663                tp->media_type = MEDIA_UTP_4;
3664        else
3665                tp->media_type = MEDIA_UTP_16;
3666
3667        printk(KERN_INFO "%s: %s %s at Io %#4x, Irq %d, Rom %#4x, Ram %#4x.\n",
3668                dev->name, smctr_name, smctr_model,
3669                (unsigned int)dev->base_addr,
3670                dev->irq, tp->rom_base, tp->ram_base);
3671
3672        dev->open               = smctr_open;
3673        dev->stop               = smctr_close;
3674        dev->hard_start_xmit    = smctr_send_packet;
3675        dev->tx_timeout         = smctr_timeout;
3676        dev->watchdog_timeo     = HZ;
3677        dev->get_stats          = smctr_get_stats;
3678        dev->set_multicast_list = &smctr_set_multicast_list;
3679        return (0);
3680
3681out:
3682        return err;
3683}
3684
3685static int smctr_process_rx_packet(MAC_HEADER *rmf, __u16 size,
3686        struct net_device *dev, __u16 rx_status)
3687{
3688        struct net_local *tp = netdev_priv(dev);
3689        struct sk_buff *skb;
3690        __u16 rcode, correlator;
3691        int err = 0;
3692        __u8 xframe = 1;
3693
3694        rmf->vl = SWAP_BYTES(rmf->vl);
3695        if(rx_status & FCB_RX_STATUS_DA_MATCHED)
3696        {
3697                switch(rmf->vc)
3698                {
3699                        /* Received MAC Frames Processed by RS. */
3700                        case INIT:
3701                                if((rcode = smctr_rcv_init(dev, rmf, &correlator)) == HARDWARE_FAILED)
3702                                {
3703                                        return (rcode);
3704                                }
3705
3706                                if((err = smctr_send_rsp(dev, rmf, rcode,
3707                                        correlator)))
3708                                {
3709                                        return (err);
3710                                }
3711                                break;
3712
3713                        case CHG_PARM:
3714                                if((rcode = smctr_rcv_chg_param(dev, rmf,
3715                                        &correlator)) ==HARDWARE_FAILED)
3716                                {
3717                                        return (rcode);
3718                                }
3719
3720                                if((err = smctr_send_rsp(dev, rmf, rcode,
3721                                        correlator)))
3722                                {
3723                                        return (err);
3724                                }
3725                                break;
3726
3727                        case RQ_ADDR:
3728                                if((rcode = smctr_rcv_rq_addr_state_attch(dev,
3729                                        rmf, &correlator)) != POSITIVE_ACK)
3730                                {
3731                                        if(rcode == HARDWARE_FAILED)
3732                                                return (rcode);
3733                                        else
3734                                                return (smctr_send_rsp(dev, rmf,
3735                                                        rcode, correlator));
3736                                }
3737
3738                                if((err = smctr_send_rpt_addr(dev, rmf,
3739                                        correlator)))
3740                                {
3741                                        return (err);
3742                                }
3743                                break;
3744
3745                        case RQ_ATTCH:
3746                                if((rcode = smctr_rcv_rq_addr_state_attch(dev,
3747                                        rmf, &correlator)) != POSITIVE_ACK)
3748                                {
3749                                        if(rcode == HARDWARE_FAILED)
3750                                                return (rcode);
3751                                        else
3752                                                return (smctr_send_rsp(dev, rmf,
3753                                                        rcode,
3754                                                        correlator));
3755                                }
3756
3757                                if((err = smctr_send_rpt_attch(dev, rmf,
3758                                        correlator)))
3759                                {
3760                                        return (err);
3761                                }
3762                                break;
3763
3764                        case RQ_STATE:
3765                                if((rcode = smctr_rcv_rq_addr_state_attch(dev,
3766                                        rmf, &correlator)) != POSITIVE_ACK)
3767                                {
3768                                        if(rcode == HARDWARE_FAILED)
3769                                                return (rcode);
3770                                        else
3771                                                return (smctr_send_rsp(dev, rmf,
3772                                                        rcode,
3773                                                        correlator));
3774                                }
3775
3776                                if((err = smctr_send_rpt_state(dev, rmf,
3777                                        correlator)))
3778                                {
3779                                        return (err);
3780                                }
3781                                break;
3782
3783                        case TX_FORWARD: {
3784                                __u16 uninitialized_var(tx_fstatus);
3785
3786                                if((rcode = smctr_rcv_tx_forward(dev, rmf))
3787                                        != POSITIVE_ACK)
3788                                {
3789                                        if(rcode == HARDWARE_FAILED)
3790                                                return (rcode);
3791                                        else
3792                                                return (smctr_send_rsp(dev, rmf,
3793                                                        rcode,
3794                                                        correlator));
3795                                }
3796
3797                                if((err = smctr_send_tx_forward(dev, rmf,
3798                                        &tx_fstatus)) == HARDWARE_FAILED)
3799                                {
3800                                        return (err);
3801                                }
3802
3803                                if(err == A_FRAME_WAS_FORWARDED)
3804                                {
3805                                        if((err = smctr_send_rpt_tx_forward(dev,
3806                                                rmf, tx_fstatus))
3807                                                == HARDWARE_FAILED)
3808                                        {
3809                                                return (err);
3810                                        }
3811                                }
3812                                break;
3813                        }
3814
3815                        /* Received MAC Frames Processed by CRS/REM/RPS. */
3816                        case RSP:
3817                        case RQ_INIT:
3818                        case RPT_NEW_MON:
3819                        case RPT_SUA_CHG:
3820                        case RPT_ACTIVE_ERR:
3821                        case RPT_NN_INCMP:
3822                        case RPT_ERROR:
3823                        case RPT_ATTCH:
3824                        case RPT_STATE:
3825                        case RPT_ADDR:
3826                                break;
3827
3828                        /* Rcvd Att. MAC Frame (if RXATMAC set) or UNKNOWN */
3829                        default:
3830                                xframe = 0;
3831                                if(!(tp->receive_mask & ACCEPT_ATT_MAC_FRAMES))
3832                                {
3833                                        rcode = smctr_rcv_unknown(dev, rmf,
3834                                                &correlator);
3835                                        if((err = smctr_send_rsp(dev, rmf,rcode,
3836                                                correlator)))
3837                                        {
3838                                                return (err);
3839                                        }
3840                                }
3841
3842                                break;
3843                }
3844        }
3845        else
3846        {
3847                /* 1. DA doesn't match (Promiscuous Mode).
3848                 * 2. Parse for Extended MAC Frame Type.
3849                 */
3850                switch(rmf->vc)
3851                {
3852                        case RSP:
3853                        case INIT:
3854                        case RQ_INIT:
3855                        case RQ_ADDR:
3856                        case RQ_ATTCH:
3857                        case RQ_STATE:
3858                        case CHG_PARM:
3859                        case RPT_ADDR:
3860                        case RPT_ERROR:
3861                        case RPT_ATTCH:
3862                        case RPT_STATE:
3863                        case RPT_NEW_MON:
3864                        case RPT_SUA_CHG:
3865                        case RPT_NN_INCMP:
3866                        case RPT_ACTIVE_ERR:
3867                                break;
3868
3869                        default:
3870                                xframe = 0;
3871                                break;
3872                }
3873        }
3874
3875        /* NOTE: UNKNOWN MAC frames will NOT be passed up unless
3876         * ACCEPT_ATT_MAC_FRAMES is set.
3877         */
3878        if(((tp->receive_mask & ACCEPT_ATT_MAC_FRAMES)
3879                && (xframe == (__u8)0))
3880                || ((tp->receive_mask & ACCEPT_EXT_MAC_FRAMES)
3881                && (xframe == (__u8)1)))
3882        {
3883                rmf->vl = SWAP_BYTES(rmf->vl);
3884
3885                if (!(skb = dev_alloc_skb(size)))
3886                        return -ENOMEM;
3887                skb->len = size;
3888
3889                /* Slide data into a sleek skb. */
3890                skb_put(skb, skb->len);
3891                skb_copy_to_linear_data(skb, rmf, skb->len);
3892
3893                /* Update Counters */
3894                tp->MacStat.rx_packets++;
3895                tp->MacStat.rx_bytes += skb->len;
3896
3897                /* Kick the packet on up. */
3898                skb->protocol = tr_type_trans(skb, dev);
3899                netif_rx(skb);
3900                dev->last_rx = jiffies;
3901                err = 0;
3902        }
3903
3904        return (err);
3905}
3906
3907/* Adapter RAM test. Incremental word ODD boundary data test. */
3908static int smctr_ram_memory_test(struct net_device *dev)
3909{
3910        struct net_local *tp = netdev_priv(dev);
3911        __u16 page, pages_of_ram, start_pattern = 0, word_pattern = 0,
3912                word_read = 0, err_word = 0, err_pattern = 0;
3913        unsigned int err_offset;
3914        __u32 j, pword;
3915        __u8 err = 0;
3916
3917        if(smctr_debug > 10)
3918                printk(KERN_DEBUG "%s: smctr_ram_memory_test\n", dev->name);
3919
3920        start_pattern   = 0x0001;
3921        pages_of_ram    = tp->ram_size / tp->ram_usable;
3922        pword           = tp->ram_access;
3923
3924        /* Incremental word ODD boundary test. */
3925        for(page = 0; (page < pages_of_ram) && (~err);
3926                page++, start_pattern += 0x8000)
3927        {
3928                smctr_set_page(dev, (__u8 *)(tp->ram_access
3929                        + (page * tp->ram_usable * 1024) + 1));
3930                word_pattern = start_pattern;
3931
3932                for(j = 1; j < (__u32)(tp->ram_usable * 1024) - 1; j += 2)
3933                        *(__u16 *)(pword + j) = word_pattern++;
3934
3935                word_pattern = start_pattern;
3936
3937                for(j = 1; j < (__u32)(tp->ram_usable * 1024) - 1
3938                        && (~err); j += 2, word_pattern++)
3939                {
3940                        word_read = *(__u16 *)(pword + j);
3941                        if(word_read != word_pattern)
3942                        {
3943                                err             = (__u8)1;
3944                                err_offset      = j;
3945                                err_word        = word_read;
3946                                err_pattern     = word_pattern;
3947                                return (RAM_TEST_FAILED);
3948                        }
3949                }
3950        }
3951
3952        /* Zero out memory. */
3953        for(page = 0; page < pages_of_ram && (~err); page++)
3954        {
3955                smctr_set_page(dev, (__u8 *)(tp->ram_access
3956                        + (page * tp->ram_usable * 1024)));
3957                word_pattern = 0;
3958
3959                for(j = 0; j < (__u32)tp->ram_usable * 1024; j +=2)
3960                        *(__u16 *)(pword + j) = word_pattern;
3961
3962                for(j =0; j < (__u32)tp->ram_usable * 1024
3963                        && (~err); j += 2)
3964                {
3965                        word_read = *(__u16 *)(pword + j);
3966                        if(word_read != word_pattern)
3967                        {
3968                                err             = (__u8)1;
3969                                err_offset      = j;
3970                                err_word        = word_read;
3971                                err_pattern     = word_pattern;
3972                                return (RAM_TEST_FAILED);
3973                        }
3974                }
3975        }
3976
3977        smctr_set_page(dev, (__u8 *)tp->ram_access);
3978
3979        return (0);
3980}
3981
3982static int smctr_rcv_chg_param(struct net_device *dev, MAC_HEADER *rmf,
3983        __u16 *correlator)
3984{
3985        MAC_SUB_VECTOR *rsv;
3986        signed short vlen;
3987        __u16 rcode = POSITIVE_ACK;
3988        unsigned int svectors = F_NO_SUB_VECTORS_FOUND;
3989
3990        /* This Frame can only come from a CRS */
3991        if((rmf->dc_sc & SC_MASK) != SC_CRS)
3992                return(E_INAPPROPRIATE_SOURCE_CLASS);
3993
3994        /* Remove MVID Length from total length. */
3995        vlen = (signed short)rmf->vl - 4;
3996
3997        /* Point to First SVID */
3998        rsv = (MAC_SUB_VECTOR *)((__u32)rmf + sizeof(MAC_HEADER));
3999
4000        /* Search for Appropriate SVID's. */
4001        while((vlen > 0) && (rcode == POSITIVE_ACK))
4002        {
4003                switch(rsv->svi)
4004                {
4005                        case CORRELATOR:
4006                                svectors |= F_CORRELATOR;
4007                                rcode = smctr_set_corr(dev, rsv, correlator);
4008                                break;
4009
4010                        case LOCAL_RING_NUMBER:
4011                                svectors |= F_LOCAL_RING_NUMBER;
4012                                rcode = smctr_set_local_ring_num(dev, rsv);
4013                                break;
4014
4015                        case ASSIGN_PHYSICAL_DROP:
4016                                svectors |= F_ASSIGN_PHYSICAL_DROP;
4017                                rcode = smctr_set_phy_drop(dev, rsv);
4018                                break;
4019
4020                        case ERROR_TIMER_VALUE:
4021                                svectors |= F_ERROR_TIMER_VALUE;
4022                                rcode = smctr_set_error_timer_value(dev, rsv);
4023                                break;
4024
4025                        case AUTHORIZED_FUNCTION_CLASS:
4026                                svectors |= F_AUTHORIZED_FUNCTION_CLASS;
4027                                rcode = smctr_set_auth_funct_class(dev, rsv);
4028                                break;
4029
4030                        case AUTHORIZED_ACCESS_PRIORITY:
4031                                svectors |= F_AUTHORIZED_ACCESS_PRIORITY;
4032                                rcode = smctr_set_auth_access_pri(dev, rsv);
4033                                break;
4034
4035                        default:
4036                                rcode = E_SUB_VECTOR_UNKNOWN;
4037                                break;
4038                }
4039
4040                /* Let Sender Know if SUM of SV length's is
4041                 * larger then length in MVID length field
4042                 */
4043                if((vlen -= rsv->svl) < 0)
4044                        rcode = E_VECTOR_LENGTH_ERROR;
4045
4046                rsv = (MAC_SUB_VECTOR *)((__u32)rsv + rsv->svl);
4047        }
4048
4049        if(rcode == POSITIVE_ACK)
4050        {
4051                /* Let Sender Know if MVID length field
4052                 * is larger then SUM of SV length's
4053                 */
4054                if(vlen != 0)
4055                        rcode = E_VECTOR_LENGTH_ERROR;
4056                else
4057                {
4058                        /* Let Sender Know if Expected SVID Missing */
4059                        if((svectors & R_CHG_PARM) ^ R_CHG_PARM)
4060                                rcode = E_MISSING_SUB_VECTOR;
4061                }
4062        }
4063
4064        return (rcode);
4065}
4066
4067static int smctr_rcv_init(struct net_device *dev, MAC_HEADER *rmf,
4068        __u16 *correlator)
4069{
4070        MAC_SUB_VECTOR *rsv;
4071        signed short vlen;
4072        __u16 rcode = POSITIVE_ACK;
4073        unsigned int svectors = F_NO_SUB_VECTORS_FOUND;
4074
4075        /* This Frame can only come from a RPS */
4076        if((rmf->dc_sc & SC_MASK) != SC_RPS)
4077                return (E_INAPPROPRIATE_SOURCE_CLASS);
4078
4079        /* Remove MVID Length from total length. */
4080        vlen = (signed short)rmf->vl - 4;
4081
4082        /* Point to First SVID */
4083        rsv = (MAC_SUB_VECTOR *)((__u32)rmf + sizeof(MAC_HEADER));
4084
4085        /* Search for Appropriate SVID's */
4086        while((vlen > 0) && (rcode == POSITIVE_ACK))
4087        {
4088                switch(rsv->svi)
4089                {
4090                        case CORRELATOR:
4091                                svectors |= F_CORRELATOR;
4092                                rcode = smctr_set_corr(dev, rsv, correlator);
4093                                break;
4094
4095                        case LOCAL_RING_NUMBER:
4096                                svectors |= F_LOCAL_RING_NUMBER;
4097                                rcode = smctr_set_local_ring_num(dev, rsv);
4098                                break;
4099
4100                        case ASSIGN_PHYSICAL_DROP:
4101                                svectors |= F_ASSIGN_PHYSICAL_DROP;
4102                                rcode = smctr_set_phy_drop(dev, rsv);
4103                                break;
4104
4105                        case ERROR_TIMER_VALUE:
4106                                svectors |= F_ERROR_TIMER_VALUE;
4107                                rcode = smctr_set_error_timer_value(dev, rsv);
4108                                break;
4109
4110                        default:
4111                                rcode = E_SUB_VECTOR_UNKNOWN;
4112                                break;
4113                }
4114
4115                /* Let Sender Know if SUM of SV length's is
4116                 * larger then length in MVID length field
4117                 */
4118                if((vlen -= rsv->svl) < 0)
4119                        rcode = E_VECTOR_LENGTH_ERROR;
4120
4121                rsv = (MAC_SUB_VECTOR *)((__u32)rsv + rsv->svl);
4122        }
4123
4124        if(rcode == POSITIVE_ACK)
4125        {
4126                /* Let Sender Know if MVID length field
4127                 * is larger then SUM of SV length's
4128                 */
4129                if(vlen != 0)
4130                        rcode = E_VECTOR_LENGTH_ERROR;
4131                else
4132                {
4133                        /* Let Sender Know if Expected SV Missing */
4134                        if((svectors & R_INIT) ^ R_INIT)
4135                                rcode = E_MISSING_SUB_VECTOR;
4136                }
4137        }
4138
4139        return (rcode);
4140}
4141
4142static int smctr_rcv_tx_forward(struct net_device *dev, MAC_HEADER *rmf)
4143{
4144        MAC_SUB_VECTOR *rsv;
4145        signed short vlen;
4146        __u16 rcode = POSITIVE_ACK;
4147        unsigned int svectors = F_NO_SUB_VECTORS_FOUND;
4148
4149        /* This Frame can only come from a CRS */
4150        if((rmf->dc_sc & SC_MASK) != SC_CRS)
4151                return (E_INAPPROPRIATE_SOURCE_CLASS);
4152
4153        /* Remove MVID Length from total length */
4154        vlen = (signed short)rmf->vl - 4;
4155
4156        /* Point to First SVID */
4157        rsv = (MAC_SUB_VECTOR *)((__u32)rmf + sizeof(MAC_HEADER));
4158
4159        /* Search for Appropriate SVID's */
4160        while((vlen > 0) && (rcode == POSITIVE_ACK))
4161        {
4162                switch(rsv->svi)
4163                {
4164                        case FRAME_FORWARD:
4165                                svectors |= F_FRAME_FORWARD;
4166                                rcode = smctr_set_frame_forward(dev, rsv, 
4167                                        rmf->dc_sc);
4168                                break;
4169
4170                        default:
4171                                rcode = E_SUB_VECTOR_UNKNOWN;
4172                                break;
4173                }
4174
4175                /* Let Sender Know if SUM of SV length's is
4176                 * larger then length in MVID length field
4177                 */
4178                if((vlen -= rsv->svl) < 0)
4179                        rcode = E_VECTOR_LENGTH_ERROR;
4180
4181                rsv = (MAC_SUB_VECTOR *)((__u32)rsv + rsv->svl);
4182        }
4183
4184        if(rcode == POSITIVE_ACK)
4185        {
4186                /* Let Sender Know if MVID length field
4187                 * is larger then SUM of SV length's
4188                 */
4189                if(vlen != 0)
4190                        rcode = E_VECTOR_LENGTH_ERROR;
4191                else
4192                {
4193                        /* Let Sender Know if Expected SV Missing */
4194                        if((svectors & R_TX_FORWARD) ^ R_TX_FORWARD)
4195                                rcode = E_MISSING_SUB_VECTOR;
4196                }
4197        }
4198
4199        return (rcode);
4200}
4201
4202static int smctr_rcv_rq_addr_state_attch(struct net_device *dev,
4203        MAC_HEADER *rmf, __u16 *correlator)
4204{
4205        MAC_SUB_VECTOR *rsv;
4206        signed short vlen;
4207        __u16 rcode = POSITIVE_ACK;
4208        unsigned int svectors = F_NO_SUB_VECTORS_FOUND;
4209
4210        /* Remove MVID Length from total length */
4211        vlen = (signed short)rmf->vl - 4;
4212
4213        /* Point to First SVID */
4214        rsv = (MAC_SUB_VECTOR *)((__u32)rmf + sizeof(MAC_HEADER));
4215
4216        /* Search for Appropriate SVID's */
4217        while((vlen > 0) && (rcode == POSITIVE_ACK))
4218        {
4219                switch(rsv->svi)
4220                {
4221                        case CORRELATOR:
4222                                svectors |= F_CORRELATOR;
4223                                rcode = smctr_set_corr(dev, rsv, correlator);
4224                                break;
4225
4226                        default:
4227                                rcode = E_SUB_VECTOR_UNKNOWN;
4228                                break;
4229                }
4230
4231                /* Let Sender Know if SUM of SV length's is
4232                 * larger then length in MVID length field
4233                 */
4234                if((vlen -= rsv->svl) < 0)
4235                        rcode = E_VECTOR_LENGTH_ERROR;
4236
4237                rsv = (MAC_SUB_VECTOR *)((__u32)rsv + rsv->svl);
4238        }
4239
4240        if(rcode == POSITIVE_ACK)
4241        {
4242                /* Let Sender Know if MVID length field
4243                 * is larger then SUM of SV length's
4244                 */
4245                if(vlen != 0)
4246                        rcode = E_VECTOR_LENGTH_ERROR;
4247                else
4248                {
4249                        /* Let Sender Know if Expected SVID Missing */
4250                        if((svectors & R_RQ_ATTCH_STATE_ADDR) 
4251                                ^ R_RQ_ATTCH_STATE_ADDR)
4252                                rcode = E_MISSING_SUB_VECTOR;
4253                        }
4254        }
4255
4256        return (rcode);
4257}
4258
4259static int smctr_rcv_unknown(struct net_device *dev, MAC_HEADER *rmf,
4260        __u16 *correlator)
4261{
4262        MAC_SUB_VECTOR *rsv;
4263        signed short vlen;
4264
4265        *correlator = 0;
4266
4267        /* Remove MVID Length from total length */
4268        vlen = (signed short)rmf->vl - 4;
4269
4270        /* Point to First SVID */
4271        rsv = (MAC_SUB_VECTOR *)((__u32)rmf + sizeof(MAC_HEADER));
4272
4273        /* Search for CORRELATOR for RSP to UNKNOWN */
4274        while((vlen > 0) && (*correlator == 0))
4275        {
4276                switch(rsv->svi)
4277                {
4278                        case CORRELATOR:
4279                                smctr_set_corr(dev, rsv, correlator);
4280                                break;
4281
4282                        default:
4283                                break;
4284                }
4285
4286                vlen -= rsv->svl;
4287                rsv = (MAC_SUB_VECTOR *)((__u32)rsv + rsv->svl);
4288        }
4289
4290        return (E_UNRECOGNIZED_VECTOR_ID);
4291}
4292
4293/*
4294 * Reset the 825 NIC and exit w:
4295 * 1. The NIC reset cleared (non-reset state), halted and un-initialized.
4296 * 2. TINT masked.
4297 * 3. CBUSY masked.
4298 * 4. TINT clear.
4299 * 5. CBUSY clear.
4300 */
4301static int smctr_reset_adapter(struct net_device *dev)
4302{
4303        struct net_local *tp = netdev_priv(dev);
4304        int ioaddr = dev->base_addr;
4305
4306        /* Reseting the NIC will put it in a halted and un-initialized state. */        smctr_set_trc_reset(ioaddr);
4307        mdelay(200); /* ~2 ms */
4308
4309        smctr_clear_trc_reset(ioaddr);
4310        mdelay(200); /* ~2 ms */
4311
4312        /* Remove any latched interrupts that occurred prior to reseting the
4313         * adapter or possibily caused by line glitches due to the reset.
4314         */
4315        outb(tp->trc_mask | CSR_CLRTINT | CSR_CLRCBUSY, ioaddr + CSR);
4316
4317        return (0);
4318}
4319
4320static int smctr_restart_tx_chain(struct net_device *dev, short queue)
4321{
4322        struct net_local *tp = netdev_priv(dev);
4323        int err = 0;
4324
4325        if(smctr_debug > 10)
4326                printk(KERN_DEBUG "%s: smctr_restart_tx_chain\n", dev->name);
4327
4328        if(tp->num_tx_fcbs_used[queue] != 0
4329                && tp->tx_queue_status[queue] == NOT_TRANSMITING)
4330        {
4331                tp->tx_queue_status[queue] = TRANSMITING;
4332                err = smctr_issue_resume_tx_fcb_cmd(dev, queue);
4333        }
4334
4335        return (err);
4336}
4337
4338static int smctr_ring_status_chg(struct net_device *dev)
4339{
4340        struct net_local *tp = netdev_priv(dev);
4341
4342        if(smctr_debug > 10)
4343                printk(KERN_DEBUG "%s: smctr_ring_status_chg\n", dev->name);
4344
4345        /* Check for ring_status_flag: whenever MONITOR_STATE_BIT
4346         * Bit is set, check value of monitor_state, only then we
4347         * enable and start transmit/receive timeout (if and only
4348         * if it is MS_ACTIVE_MONITOR_STATE or MS_STANDBY_MONITOR_STATE)
4349         */
4350        if(tp->ring_status_flags == MONITOR_STATE_CHANGED)
4351        {
4352                if((tp->monitor_state == MS_ACTIVE_MONITOR_STATE)
4353                        || (tp->monitor_state == MS_STANDBY_MONITOR_STATE))
4354                {
4355                        tp->monitor_state_ready = 1;
4356                }
4357                else
4358                {
4359                        /* if adapter is NOT in either active monitor
4360                         * or standby monitor state => Disable
4361                         * transmit/receive timeout.
4362                         */
4363                        tp->monitor_state_ready = 0;
4364
4365                        /* Ring speed problem, switching to auto mode. */
4366                        if(tp->monitor_state == MS_MONITOR_FSM_INACTIVE
4367                                && !tp->cleanup)
4368                        {
4369                                printk(KERN_INFO "%s: Incorrect ring speed switching.\n",
4370                                        dev->name);
4371                                smctr_set_ring_speed(dev);
4372                        }
4373                }
4374        }
4375
4376        if(!(tp->ring_status_flags & RING_STATUS_CHANGED))
4377                return (0);
4378
4379        switch(tp->ring_status)
4380        {
4381                case RING_RECOVERY:
4382                        printk(KERN_INFO "%s: Ring Recovery\n", dev->name);
4383                        tp->current_ring_status |= RING_RECOVERY;
4384                        break;
4385
4386                case SINGLE_STATION:
4387                        printk(KERN_INFO "%s: Single Statinon\n", dev->name);
4388                        tp->current_ring_status |= SINGLE_STATION;
4389                        break;
4390
4391                case COUNTER_OVERFLOW:
4392                        printk(KERN_INFO "%s: Counter Overflow\n", dev->name);
4393                        tp->current_ring_status |= COUNTER_OVERFLOW;
4394                        break;
4395
4396                case REMOVE_RECEIVED:
4397                        printk(KERN_INFO "%s: Remove Received\n", dev->name);
4398                        tp->current_ring_status |= REMOVE_RECEIVED;
4399                        break;
4400
4401                case AUTO_REMOVAL_ERROR:
4402                        printk(KERN_INFO "%s: Auto Remove Error\n", dev->name);
4403                        tp->current_ring_status |= AUTO_REMOVAL_ERROR;
4404                        break;
4405
4406                case LOBE_WIRE_FAULT:
4407                        printk(KERN_INFO "%s: Lobe Wire Fault\n", dev->name);
4408                        tp->current_ring_status |= LOBE_WIRE_FAULT;
4409                        break;
4410
4411                case TRANSMIT_BEACON:
4412                        printk(KERN_INFO "%s: Transmit Beacon\n", dev->name);
4413                        tp->current_ring_status |= TRANSMIT_BEACON;
4414                        break;
4415
4416                case SOFT_ERROR:
4417                        printk(KERN_INFO "%s: Soft Error\n", dev->name);
4418                        tp->current_ring_status |= SOFT_ERROR;
4419                        break;
4420
4421                case HARD_ERROR:
4422                        printk(KERN_INFO "%s: Hard Error\n", dev->name);
4423                        tp->current_ring_status |= HARD_ERROR;
4424                        break;
4425
4426                case SIGNAL_LOSS:
4427                        printk(KERN_INFO "%s: Signal Loss\n", dev->name);
4428                        tp->current_ring_status |= SIGNAL_LOSS;
4429                        break;
4430
4431                default:
4432                        printk(KERN_INFO "%s: Unknown ring status change\n",
4433                                dev->name);
4434                        break;
4435        }
4436
4437        return (0);
4438}
4439
4440static int smctr_rx_frame(struct net_device *dev)
4441{
4442        struct net_local *tp = netdev_priv(dev);
4443        __u16 queue, status, rx_size, err = 0;
4444        __u8 *pbuff;
4445
4446        if(smctr_debug > 10)
4447                printk(KERN_DEBUG "%s: smctr_rx_frame\n", dev->name);
4448
4449        queue = tp->receive_queue_number;
4450
4451        while((status = tp->rx_fcb_curr[queue]->frame_status) != SUCCESS)
4452        {
4453                err = HARDWARE_FAILED;
4454
4455                if(((status & 0x007f) == 0)
4456                        || ((tp->receive_mask & ACCEPT_ERR_PACKETS) != 0))
4457                {
4458                        /* frame length less the CRC (4 bytes) + FS (1 byte) */
4459                        rx_size = tp->rx_fcb_curr[queue]->frame_length - 5;
4460
4461                        pbuff = smctr_get_rx_pointer(dev, queue);
4462
4463                        smctr_set_page(dev, pbuff);
4464                        smctr_disable_16bit(dev);
4465
4466                        /* pbuff points to addr within one page */
4467                        pbuff = (__u8 *)PAGE_POINTER(pbuff);
4468
4469                        if(queue == NON_MAC_QUEUE)
4470                        {
4471                                struct sk_buff *skb;
4472
4473                                skb = dev_alloc_skb(rx_size);
4474                                if (skb) {
4475                                        skb_put(skb, rx_size);
4476
4477                                        skb_copy_to_linear_data(skb, pbuff, rx_size);
4478
4479                                        /* Update Counters */
4480                                        tp->MacStat.rx_packets++;
4481                                        tp->MacStat.rx_bytes += skb->len;
4482
4483                                        /* Kick the packet on up. */
4484                                        skb->protocol = tr_type_trans(skb, dev);
4485                                        netif_rx(skb);
4486                                        dev->last_rx = jiffies;
4487                                } else {
4488                                }
4489                        }
4490                        else
4491                                smctr_process_rx_packet((MAC_HEADER *)pbuff,
4492                                        rx_size, dev, status);
4493                }
4494
4495                smctr_enable_16bit(dev);
4496                smctr_set_page(dev, (__u8 *)tp->ram_access);
4497                smctr_update_rx_chain(dev, queue);
4498
4499                if(err != SUCCESS)
4500                        break;
4501        }
4502
4503        return (err);
4504}
4505
4506static int smctr_send_dat(struct net_device *dev)
4507{
4508        struct net_local *tp = netdev_priv(dev);
4509        unsigned int i, err;
4510        MAC_HEADER *tmf;
4511        FCBlock *fcb;
4512
4513        if(smctr_debug > 10)
4514                printk(KERN_DEBUG "%s: smctr_send_dat\n", dev->name);
4515
4516        if((fcb = smctr_get_tx_fcb(dev, MAC_QUEUE,
4517                sizeof(MAC_HEADER))) == (FCBlock *)(-1L))
4518        {
4519                return (OUT_OF_RESOURCES);
4520        }
4521
4522        /* Initialize DAT Data Fields. */
4523        tmf = (MAC_HEADER *)fcb->bdb_ptr->data_block_ptr;
4524        tmf->ac = MSB(AC_FC_DAT);
4525        tmf->fc = LSB(AC_FC_DAT);
4526
4527        for(i = 0; i < 6; i++)
4528        {
4529                tmf->sa[i] = dev->dev_addr[i];
4530                tmf->da[i] = dev->dev_addr[i];
4531
4532        }
4533
4534        tmf->vc        = DAT;
4535        tmf->dc_sc     = DC_RS | SC_RS;
4536        tmf->vl        = 4;
4537        tmf->vl        = SWAP_BYTES(tmf->vl);
4538
4539        /* Start Transmit. */
4540        if((err = smctr_trc_send_packet(dev, fcb, MAC_QUEUE)))
4541                return (err);
4542
4543        /* Wait for Transmit to Complete */
4544        for(i = 0; i < 10000; i++)
4545        {
4546                if(fcb->frame_status & FCB_COMMAND_DONE)
4547                        break;
4548                mdelay(1);
4549        }
4550
4551        /* Check if GOOD frame Tx'ed. */
4552        if(!(fcb->frame_status &  FCB_COMMAND_DONE)
4553                || fcb->frame_status & (FCB_TX_STATUS_E | FCB_TX_AC_BITS))
4554        {
4555                return (INITIALIZE_FAILED);
4556        }
4557
4558        /* De-allocated Tx FCB and Frame Buffer
4559         * The FCB must be de-allocated manually if executing with
4560         * interrupts disabled, other wise the ISR (LM_Service_Events)
4561         * will de-allocate it when the interrupt occurs.
4562         */
4563        tp->tx_queue_status[MAC_QUEUE] = NOT_TRANSMITING;
4564        smctr_update_tx_chain(dev, fcb, MAC_QUEUE);
4565
4566        return (0);
4567}
4568
4569static void smctr_timeout(struct net_device *dev)
4570{
4571        /*
4572         * If we get here, some higher level has decided we are broken.
4573         * There should really be a "kick me" function call instead.
4574         *
4575         * Resetting the token ring adapter takes a long time so just
4576         * fake transmission time and go on trying. Our own timeout
4577         * routine is in sktr_timer_chk()
4578         */
4579        dev->trans_start = jiffies;
4580        netif_wake_queue(dev);
4581}
4582
4583/*
4584 * Gets skb from system, queues it and checks if it can be sent
4585 */
4586static int smctr_send_packet(struct sk_buff *skb, struct net_device *dev)
4587{
4588        struct net_local *tp = netdev_priv(dev);
4589
4590        if(smctr_debug > 10)
4591                printk(KERN_DEBUG "%s: smctr_send_packet\n", dev->name);
4592
4593        /*
4594         * Block a transmit overlap
4595         */
4596         
4597        netif_stop_queue(dev);
4598
4599        if(tp->QueueSkb == 0)
4600                return (1);     /* Return with tbusy set: queue full */
4601
4602        tp->QueueSkb--;
4603        skb_queue_tail(&tp->SendSkbQueue, skb);
4604        smctr_hardware_send_packet(dev, tp);
4605        if(tp->QueueSkb > 0)
4606                netif_wake_queue(dev);
4607                
4608        return (0);
4609}
4610
4611static int smctr_send_lobe_media_test(struct net_device *dev)
4612{
4613        struct net_local *tp = netdev_priv(dev);
4614        MAC_SUB_VECTOR *tsv;
4615        MAC_HEADER *tmf;
4616        FCBlock *fcb;
4617        __u32 i;
4618        int err;
4619
4620        if(smctr_debug > 15)
4621                printk(KERN_DEBUG "%s: smctr_send_lobe_media_test\n", dev->name);
4622
4623        if((fcb = smctr_get_tx_fcb(dev, MAC_QUEUE, sizeof(struct trh_hdr)
4624                + S_WRAP_DATA + S_WRAP_DATA)) == (FCBlock *)(-1L))
4625        {
4626                return (OUT_OF_RESOURCES);
4627        }
4628
4629        /* Initialize DAT Data Fields. */
4630        tmf = (MAC_HEADER *)fcb->bdb_ptr->data_block_ptr;
4631        tmf->ac = MSB(AC_FC_LOBE_MEDIA_TEST);
4632        tmf->fc = LSB(AC_FC_LOBE_MEDIA_TEST);
4633
4634        for(i = 0; i < 6; i++)
4635        {
4636                tmf->da[i] = 0;
4637                tmf->sa[i] = dev->dev_addr[i];
4638        }
4639
4640        tmf->vc        = LOBE_MEDIA_TEST;
4641        tmf->dc_sc     = DC_RS | SC_RS;
4642        tmf->vl        = 4;
4643
4644        tsv = (MAC_SUB_VECTOR *)((__u32)tmf + sizeof(MAC_HEADER));
4645        smctr_make_wrap_data(dev, tsv);
4646        tmf->vl += tsv->svl;
4647
4648        tsv = (MAC_SUB_VECTOR *)((__u32)tsv + tsv->svl);
4649        smctr_make_wrap_data(dev, tsv);
4650        tmf->vl += tsv->svl;
4651
4652        /* Start Transmit. */
4653        tmf->vl = SWAP_BYTES(tmf->vl);
4654        if((err = smctr_trc_send_packet(dev, fcb, MAC_QUEUE)))
4655                return (err);
4656
4657        /* Wait for Transmit to Complete. (10 ms). */
4658        for(i=0; i < 10000; i++)
4659        {
4660                if(fcb->frame_status & FCB_COMMAND_DONE)
4661                        break;
4662                mdelay(1);
4663        }
4664
4665        /* Check if GOOD frame Tx'ed */
4666        if(!(fcb->frame_status & FCB_COMMAND_DONE)
4667                || fcb->frame_status & (FCB_TX_STATUS_E | FCB_TX_AC_BITS))
4668        {
4669                return (LOBE_MEDIA_TEST_FAILED);
4670        }
4671
4672        /* De-allocated Tx FCB and Frame Buffer
4673         * The FCB must be de-allocated manually if executing with
4674         * interrupts disabled, other wise the ISR (LM_Service_Events)
4675         * will de-allocate it when the interrupt occurs.
4676         */
4677        tp->tx_queue_status[MAC_QUEUE] = NOT_TRANSMITING;
4678        smctr_update_tx_chain(dev, fcb, MAC_QUEUE);
4679
4680        return (0);
4681}
4682
4683static int smctr_send_rpt_addr(struct net_device *dev, MAC_HEADER *rmf,
4684        __u16 correlator)
4685{
4686        MAC_HEADER *tmf;
4687        MAC_SUB_VECTOR *tsv;
4688        FCBlock *fcb;
4689
4690        if((fcb = smctr_get_tx_fcb(dev, MAC_QUEUE, sizeof(MAC_HEADER)
4691                + S_CORRELATOR + S_PHYSICAL_DROP + S_UPSTREAM_NEIGHBOR_ADDRESS
4692                + S_ADDRESS_MODIFER + S_GROUP_ADDRESS + S_FUNCTIONAL_ADDRESS))
4693                == (FCBlock *)(-1L))
4694        {
4695                return (0);
4696        }
4697
4698        tmf             = (MAC_HEADER *)fcb->bdb_ptr->data_block_ptr;
4699        tmf->vc         = RPT_ADDR;
4700        tmf->dc_sc      = (rmf->dc_sc & SC_MASK) << 4;
4701        tmf->vl         = 4;
4702
4703        smctr_make_8025_hdr(dev, rmf, tmf, AC_FC_RPT_ADDR);
4704
4705        tsv = (MAC_SUB_VECTOR *)((__u32)tmf + sizeof(MAC_HEADER));
4706        smctr_make_corr(dev, tsv, correlator);
4707
4708        tmf->vl += tsv->svl;
4709        tsv = (MAC_SUB_VECTOR *)((__u32)tsv + tsv->svl);
4710        smctr_make_phy_drop_num(dev, tsv);
4711
4712        tmf->vl += tsv->svl;
4713        tsv = (MAC_SUB_VECTOR *)((__u32)tsv + tsv->svl);
4714        smctr_make_upstream_neighbor_addr(dev, tsv);
4715
4716        tmf->vl += tsv->svl;
4717        tsv = (MAC_SUB_VECTOR *)((__u32)tsv + tsv->svl);
4718        smctr_make_addr_mod(dev, tsv);
4719
4720        tmf->vl += tsv->svl;
4721        tsv = (MAC_SUB_VECTOR *)((__u32)tsv + tsv->svl);
4722        smctr_make_group_addr(dev, tsv);
4723
4724        tmf->vl += tsv->svl;
4725        tsv = (MAC_SUB_VECTOR *)((__u32)tsv + tsv->svl);
4726        smctr_make_funct_addr(dev, tsv);
4727
4728        tmf->vl += tsv->svl;
4729
4730        /* Subtract out MVID and MVL which is
4731         * include in both vl and MAC_HEADER
4732         */
4733/*      fcb->frame_length           = tmf->vl + sizeof(MAC_HEADER) - 4;
4734        fcb->bdb_ptr->buffer_length = tmf->vl + sizeof(MAC_HEADER) - 4;
4735*/
4736        tmf->vl = SWAP_BYTES(tmf->vl);
4737
4738        return (smctr_trc_send_packet(dev, fcb, MAC_QUEUE));
4739}
4740
4741static int smctr_send_rpt_attch(struct net_device *dev, MAC_HEADER *rmf,
4742        __u16 correlator)
4743{
4744        MAC_HEADER *tmf;
4745        MAC_SUB_VECTOR *tsv;
4746        FCBlock *fcb;
4747
4748        if((fcb = smctr_get_tx_fcb(dev, MAC_QUEUE, sizeof(MAC_HEADER)
4749                + S_CORRELATOR + S_PRODUCT_INSTANCE_ID + S_FUNCTIONAL_ADDRESS
4750                + S_AUTHORIZED_FUNCTION_CLASS + S_AUTHORIZED_ACCESS_PRIORITY))
4751                == (FCBlock *)(-1L))
4752        {
4753                return (0);
4754        }
4755
4756        tmf        = (MAC_HEADER *)fcb->bdb_ptr->data_block_ptr;
4757        tmf->vc    = RPT_ATTCH;
4758        tmf->dc_sc = (rmf->dc_sc & SC_MASK) << 4;
4759        tmf->vl    = 4;
4760
4761        smctr_make_8025_hdr(dev, rmf, tmf, AC_FC_RPT_ATTCH);
4762
4763        tsv = (MAC_SUB_VECTOR *)((__u32)tmf + sizeof(MAC_HEADER));
4764        smctr_make_corr(dev, tsv, correlator);
4765
4766        tmf->vl += tsv->svl;
4767        tsv = (MAC_SUB_VECTOR *)((__u32)tsv + tsv->svl);
4768        smctr_make_product_id(dev, tsv);
4769
4770        tmf->vl += tsv->svl;
4771        tsv = (MAC_SUB_VECTOR *)((__u32)tsv + tsv->svl);
4772        smctr_make_funct_addr(dev, tsv);
4773
4774        tmf->vl += tsv->svl;
4775        tsv = (MAC_SUB_VECTOR *)((__u32)tsv + tsv->svl);
4776        smctr_make_auth_funct_class(dev, tsv);
4777
4778        tmf->vl += tsv->svl;
4779        tsv = (MAC_SUB_VECTOR *)((__u32)tsv + tsv->svl);
4780        smctr_make_access_pri(dev, tsv);
4781
4782        tmf->vl += tsv->svl;
4783
4784        /* Subtract out MVID and MVL which is
4785         * include in both vl and MAC_HEADER
4786         */
4787/*      fcb->frame_length           = tmf->vl + sizeof(MAC_HEADER) - 4;
4788        fcb->bdb_ptr->buffer_length = tmf->vl + sizeof(MAC_HEADER) - 4;
4789*/
4790        tmf->vl = SWAP_BYTES(tmf->vl);
4791
4792        return (smctr_trc_send_packet(dev, fcb, MAC_QUEUE));
4793}
4794
4795static int smctr_send_rpt_state(struct net_device *dev, MAC_HEADER *rmf,
4796        __u16 correlator)
4797{
4798        MAC_HEADER *tmf;
4799        MAC_SUB_VECTOR *tsv;
4800        FCBlock *fcb;
4801
4802        if((fcb = smctr_get_tx_fcb(dev, MAC_QUEUE, sizeof(MAC_HEADER)
4803                + S_CORRELATOR + S_RING_STATION_VERSION_NUMBER
4804                + S_RING_STATION_STATUS + S_STATION_IDENTIFER))
4805                == (FCBlock *)(-1L))
4806        {
4807                return (0);
4808        }
4809
4810        tmf        = (MAC_HEADER *)fcb->bdb_ptr->data_block_ptr;
4811        tmf->vc    = RPT_STATE;
4812        tmf->dc_sc = (rmf->dc_sc & SC_MASK) << 4;
4813        tmf->vl    = 4;
4814
4815        smctr_make_8025_hdr(dev, rmf, tmf, AC_FC_RPT_STATE);
4816
4817        tsv = (MAC_SUB_VECTOR *)((__u32)tmf + sizeof(MAC_HEADER));
4818        smctr_make_corr(dev, tsv, correlator);
4819
4820        tmf->vl += tsv->svl;
4821        tsv = (MAC_SUB_VECTOR *)((__u32)tsv + tsv->svl);
4822        smctr_make_ring_station_version(dev, tsv);
4823
4824        tmf->vl += tsv->svl;
4825        tsv = (MAC_SUB_VECTOR *)((__u32)tsv + tsv->svl);
4826        smctr_make_ring_station_status(dev, tsv);
4827
4828        tmf->vl += tsv->svl;
4829        tsv = (MAC_SUB_VECTOR *)((__u32)tsv + tsv->svl);
4830        smctr_make_station_id(dev, tsv);
4831
4832        tmf->vl += tsv->svl;
4833
4834        /* Subtract out MVID and MVL which is
4835         * include in both vl and MAC_HEADER
4836         */
4837/*      fcb->frame_length           = tmf->vl + sizeof(MAC_HEADER) - 4;
4838        fcb->bdb_ptr->buffer_length = tmf->vl + sizeof(MAC_HEADER) - 4;
4839*/
4840        tmf->vl = SWAP_BYTES(tmf->vl);
4841
4842        return (smctr_trc_send_packet(dev, fcb, MAC_QUEUE));
4843}
4844
4845static int smctr_send_rpt_tx_forward(struct net_device *dev,
4846        MAC_HEADER *rmf, __u16 tx_fstatus)
4847{
4848        MAC_HEADER *tmf;
4849        MAC_SUB_VECTOR *tsv;
4850        FCBlock *fcb;
4851
4852        if((fcb = smctr_get_tx_fcb(dev, MAC_QUEUE, sizeof(MAC_HEADER)
4853                + S_TRANSMIT_STATUS_CODE)) == (FCBlock *)(-1L))
4854        {
4855                return (0);
4856        }
4857
4858        tmf        = (MAC_HEADER *)fcb->bdb_ptr->data_block_ptr;
4859        tmf->vc    = RPT_TX_FORWARD;
4860        tmf->dc_sc = (rmf->dc_sc & SC_MASK) << 4;
4861        tmf->vl    = 4;
4862
4863        smctr_make_8025_hdr(dev, rmf, tmf, AC_FC_RPT_TX_FORWARD);
4864
4865        tsv = (MAC_SUB_VECTOR *)((__u32)tmf + sizeof(MAC_HEADER));
4866        smctr_make_tx_status_code(dev, tsv, tx_fstatus);
4867
4868        tmf->vl += tsv->svl;
4869
4870        /* Subtract out MVID and MVL which is
4871         * include in both vl and MAC_HEADER
4872         */
4873/*      fcb->frame_length           = tmf->vl + sizeof(MAC_HEADER) - 4;
4874        fcb->bdb_ptr->buffer_length = tmf->vl + sizeof(MAC_HEADER) - 4;
4875*/
4876        tmf->vl = SWAP_BYTES(tmf->vl);
4877
4878        return(smctr_trc_send_packet(dev, fcb, MAC_QUEUE));
4879}
4880
4881static int smctr_send_rsp(struct net_device *dev, MAC_HEADER *rmf,
4882        __u16 rcode, __u16 correlator)
4883{
4884        MAC_HEADER *tmf;
4885        MAC_SUB_VECTOR *tsv;
4886        FCBlock *fcb;
4887
4888        if((fcb = smctr_get_tx_fcb(dev, MAC_QUEUE, sizeof(MAC_HEADER)
4889                + S_CORRELATOR + S_RESPONSE_CODE)) == (FCBlock *)(-1L))
4890        {
4891                return (0);
4892        }
4893
4894        tmf        = (MAC_HEADER *)fcb->bdb_ptr->data_block_ptr;
4895        tmf->vc    = RSP;
4896        tmf->dc_sc = (rmf->dc_sc & SC_MASK) << 4;
4897        tmf->vl    = 4;
4898
4899        smctr_make_8025_hdr(dev, rmf, tmf, AC_FC_RSP);
4900
4901        tsv = (MAC_SUB_VECTOR *)((__u32)tmf + sizeof(MAC_HEADER));
4902        smctr_make_corr(dev, tsv, correlator);
4903
4904        return (0);
4905}
4906
4907static int smctr_send_rq_init(struct net_device *dev)
4908{
4909        struct net_local *tp = netdev_priv(dev);
4910        MAC_HEADER *tmf;
4911        MAC_SUB_VECTOR *tsv;
4912        FCBlock *fcb;
4913        unsigned int i, count = 0;
4914        __u16 fstatus;
4915        int err;
4916
4917        do {
4918                if(((fcb = smctr_get_tx_fcb(dev, MAC_QUEUE, sizeof(MAC_HEADER)
4919                        + S_PRODUCT_INSTANCE_ID + S_UPSTREAM_NEIGHBOR_ADDRESS
4920                        + S_RING_STATION_VERSION_NUMBER + S_ADDRESS_MODIFER))
4921                        == (FCBlock *)(-1L)))
4922                {
4923                        return (0);
4924                }
4925
4926                tmf        = (MAC_HEADER *)fcb->bdb_ptr->data_block_ptr;
4927                tmf->vc    = RQ_INIT;
4928                tmf->dc_sc = DC_RPS | SC_RS;
4929                tmf->vl    = 4;
4930
4931                smctr_make_8025_hdr(dev, NULL, tmf, AC_FC_RQ_INIT);
4932
4933                tsv = (MAC_SUB_VECTOR *)((__u32)tmf + sizeof(MAC_HEADER));
4934                smctr_make_product_id(dev, tsv);
4935
4936                tmf->vl += tsv->svl;
4937                tsv = (MAC_SUB_VECTOR *)((__u32)tsv + tsv->svl);
4938                smctr_make_upstream_neighbor_addr(dev, tsv);
4939
4940                tmf->vl += tsv->svl;
4941                tsv = (MAC_SUB_VECTOR *)((__u32)tsv + tsv->svl);
4942                smctr_make_ring_station_version(dev, tsv);
4943
4944                tmf->vl += tsv->svl;
4945                tsv = (MAC_SUB_VECTOR *)((__u32)tsv + tsv->svl);
4946                smctr_make_addr_mod(dev, tsv);
4947
4948                tmf->vl += tsv->svl;
4949
4950                /* Subtract out MVID and MVL which is
4951                 * include in both vl and MAC_HEADER
4952                 */
4953/*              fcb->frame_length           = tmf->vl + sizeof(MAC_HEADER) - 4;
4954                fcb->bdb_ptr->buffer_length = tmf->vl + sizeof(MAC_HEADER) - 4;
4955*/
4956                tmf->vl = SWAP_BYTES(tmf->vl);
4957
4958                if((err = smctr_trc_send_packet(dev, fcb, MAC_QUEUE)))
4959                        return (err);
4960
4961                /* Wait for Transmit to Complete */
4962                for(i = 0; i < 10000; i++) 
4963                {
4964                        if(fcb->frame_status & FCB_COMMAND_DONE)
4965                                break;
4966                        mdelay(1);
4967                }
4968
4969                /* Check if GOOD frame Tx'ed */
4970                fstatus = fcb->frame_status;
4971
4972                if(!(fstatus & FCB_COMMAND_DONE))
4973                        return (HARDWARE_FAILED);
4974
4975                if(!(fstatus & FCB_TX_STATUS_E))
4976                        count++;
4977
4978                /* De-allocated Tx FCB and Frame Buffer
4979                 * The FCB must be de-allocated manually if executing with
4980                 * interrupts disabled, other wise the ISR (LM_Service_Events)
4981                 * will de-allocate it when the interrupt occurs.
4982                 */
4983                tp->tx_queue_status[MAC_QUEUE] = NOT_TRANSMITING;
4984                smctr_update_tx_chain(dev, fcb, MAC_QUEUE);
4985        } while(count < 4 && ((fstatus & FCB_TX_AC_BITS) ^ FCB_TX_AC_BITS));
4986
4987        return (smctr_join_complete_state(dev));
4988}
4989
4990static int smctr_send_tx_forward(struct net_device *dev, MAC_HEADER *rmf,
4991        __u16 *tx_fstatus)
4992{
4993        struct net_local *tp = netdev_priv(dev);
4994        FCBlock *fcb;
4995        unsigned int i;
4996        int err;
4997
4998        /* Check if this is the END POINT of the Transmit Forward Chain. */
4999        if(rmf->vl <= 18)
5000                return (0);
5001
5002        /* Allocate Transmit FCB only by requesting 0 bytes
5003         * of data buffer.
5004         */
5005        if((fcb = smctr_get_tx_fcb(dev, MAC_QUEUE, 0)) == (FCBlock *)(-1L))
5006                return (0);
5007
5008        /* Set pointer to Transmit Frame Buffer to the data
5009         * portion of the received TX Forward frame, making
5010         * sure to skip over the Vector Code (vc) and Vector
5011         * length (vl).
5012         */
5013        fcb->bdb_ptr->trc_data_block_ptr = TRC_POINTER((__u32)rmf 
5014                + sizeof(MAC_HEADER) + 2);
5015        fcb->bdb_ptr->data_block_ptr     = (__u16 *)((__u32)rmf 
5016                + sizeof(MAC_HEADER) + 2);
5017
5018        fcb->frame_length                = rmf->vl - 4 - 2;
5019        fcb->bdb_ptr->buffer_length      = rmf->vl - 4 - 2;
5020
5021        if((err = smctr_trc_send_packet(dev, fcb, MAC_QUEUE)))
5022                return (err);
5023
5024        /* Wait for Transmit to Complete */
5025        for(i = 0; i < 10000; i++) 
5026        {
5027                if(fcb->frame_status & FCB_COMMAND_DONE)
5028                        break;
5029                mdelay(1);
5030        }
5031
5032        /* Check if GOOD frame Tx'ed */
5033        if(!(fcb->frame_status & FCB_COMMAND_DONE))
5034        {
5035                if((err = smctr_issue_resume_tx_fcb_cmd(dev, MAC_QUEUE)))
5036                        return (err);
5037
5038                for(i = 0; i < 10000; i++) 
5039                {
5040                        if(fcb->frame_status & FCB_COMMAND_DONE)
5041                                break;
5042                        mdelay(1);
5043                }
5044
5045                if(!(fcb->frame_status & FCB_COMMAND_DONE))
5046                        return (HARDWARE_FAILED);
5047        }
5048
5049        *tx_fstatus = fcb->frame_status;
5050
5051        return (A_FRAME_WAS_FORWARDED);
5052}
5053
5054static int smctr_set_auth_access_pri(struct net_device *dev,
5055        MAC_SUB_VECTOR *rsv)
5056{
5057        struct net_local *tp = netdev_priv(dev);
5058
5059        if(rsv->svl != S_AUTHORIZED_ACCESS_PRIORITY)
5060                return (E_SUB_VECTOR_LENGTH_ERROR);
5061
5062        tp->authorized_access_priority = (rsv->svv[0] << 8 | rsv->svv[1]);
5063
5064        return (POSITIVE_ACK);
5065}
5066
5067static int smctr_set_auth_funct_class(struct net_device *dev,
5068        MAC_SUB_VECTOR *rsv)
5069{
5070        struct net_local *tp = netdev_priv(dev);
5071
5072        if(rsv->svl != S_AUTHORIZED_FUNCTION_CLASS)
5073                return (E_SUB_VECTOR_LENGTH_ERROR);
5074
5075        tp->authorized_function_classes = (rsv->svv[0] << 8 | rsv->svv[1]);
5076
5077        return (POSITIVE_ACK);
5078}
5079
5080static int smctr_set_corr(struct net_device *dev, MAC_SUB_VECTOR *rsv,
5081        __u16 *correlator)
5082{
5083        if(rsv->svl != S_CORRELATOR)
5084                return (E_SUB_VECTOR_LENGTH_ERROR);
5085
5086        *correlator = (rsv->svv[0] << 8 | rsv->svv[1]);
5087
5088        return (POSITIVE_ACK);
5089}
5090
5091static int smctr_set_error_timer_value(struct net_device *dev,
5092        MAC_SUB_VECTOR *rsv)
5093{
5094        __u16 err_tval;
5095        int err;
5096
5097        if(rsv->svl != S_ERROR_TIMER_VALUE)
5098                return (E_SUB_VECTOR_LENGTH_ERROR);
5099
5100        err_tval = (rsv->svv[0] << 8 | rsv->svv[1])*10;
5101
5102        smctr_issue_write_word_cmd(dev, RW_TER_THRESHOLD, &err_tval);
5103
5104        if((err = smctr_wait_cmd(dev)))
5105                return (err);
5106
5107        return (POSITIVE_ACK);
5108}
5109
5110static int smctr_set_frame_forward(struct net_device *dev,
5111        MAC_SUB_VECTOR *rsv, __u8 dc_sc)
5112{
5113        if((rsv->svl < 2) || (rsv->svl > S_FRAME_FORWARD))
5114                return (E_SUB_VECTOR_LENGTH_ERROR);
5115
5116        if((dc_sc & DC_MASK) != DC_CRS)
5117        {
5118                if(rsv->svl >= 2 && rsv->svl < 20)
5119                        return (E_TRANSMIT_FORWARD_INVALID);
5120
5121                if((rsv->svv[0] != 0) || (rsv->svv[1] != 0))
5122                        return (E_TRANSMIT_FORWARD_INVALID);
5123        }
5124
5125        return (POSITIVE_ACK);
5126}
5127
5128static int smctr_set_local_ring_num(struct net_device *dev,
5129        MAC_SUB_VECTOR *rsv)
5130{
5131        struct net_local *tp = netdev_priv(dev);
5132
5133        if(rsv->svl != S_LOCAL_RING_NUMBER)
5134                return (E_SUB_VECTOR_LENGTH_ERROR);
5135
5136        if(tp->ptr_local_ring_num)
5137                *(__u16 *)(tp->ptr_local_ring_num) 
5138                        = (rsv->svv[0] << 8 | rsv->svv[1]);
5139
5140        return (POSITIVE_ACK);
5141}
5142
5143static unsigned short smctr_set_ctrl_attention(struct net_device *dev)
5144{
5145        struct net_local *tp = netdev_priv(dev);
5146        int ioaddr = dev->base_addr;
5147
5148        if(tp->bic_type == BIC_585_CHIP)
5149                outb((tp->trc_mask | HWR_CA), ioaddr + HWR);
5150        else
5151        {
5152                outb((tp->trc_mask | CSR_CA), ioaddr + CSR);
5153                outb(tp->trc_mask, ioaddr + CSR);
5154        }
5155
5156        return (0);
5157}
5158
5159static void smctr_set_multicast_list(struct net_device *dev)
5160{
5161        if(smctr_debug > 10)
5162                printk(KERN_DEBUG "%s: smctr_set_multicast_list\n", dev->name);
5163
5164        return;
5165}
5166
5167static int smctr_set_page(struct net_device *dev, __u8 *buf)
5168{
5169        struct net_local *tp = netdev_priv(dev);
5170        __u8 amask;
5171        __u32 tptr;
5172
5173        tptr = (__u32)buf - (__u32)tp->ram_access;
5174        amask = (__u8)((tptr & PR_PAGE_MASK) >> 8);
5175        outb(amask, dev->base_addr + PR);
5176
5177        return (0);
5178}
5179
5180static int smctr_set_phy_drop(struct net_device *dev, MAC_SUB_VECTOR *rsv)
5181{
5182        int err;
5183
5184        if(rsv->svl != S_PHYSICAL_DROP)
5185                return (E_SUB_VECTOR_LENGTH_ERROR);
5186
5187        smctr_issue_write_byte_cmd(dev, RW_PHYSICAL_DROP_NUMBER, &rsv->svv[0]);
5188        if((err = smctr_wait_cmd(dev)))
5189                return (err);
5190
5191        return (POSITIVE_ACK);
5192}
5193
5194/* Reset the ring speed to the opposite of what it was. This auto-pilot
5195 * mode requires a complete reset and re-init of the adapter.
5196 */
5197static int smctr_set_ring_speed(struct net_device *dev)
5198{
5199        struct net_local *tp = netdev_priv(dev);
5200        int err;
5201
5202        if(tp->media_type == MEDIA_UTP_16)
5203                tp->media_type = MEDIA_UTP_4;
5204        else
5205                tp->media_type = MEDIA_UTP_16;
5206
5207        smctr_enable_16bit(dev);
5208
5209        /* Re-Initialize adapter's internal registers */
5210        smctr_reset_adapter(dev);
5211
5212        if((err = smctr_init_card_real(dev)))
5213                return (err);
5214
5215        smctr_enable_bic_int(dev);
5216
5217        if((err = smctr_issue_enable_int_cmd(dev, TRC_INTERRUPT_ENABLE_MASK)))
5218                return (err);
5219
5220        smctr_disable_16bit(dev);
5221
5222        return (0);
5223}
5224
5225static int smctr_set_rx_look_ahead(struct net_device *dev)
5226{
5227        struct net_local *tp = netdev_priv(dev);
5228        __u16 sword, rword;
5229
5230        if(smctr_debug > 10)
5231                printk(KERN_DEBUG "%s: smctr_set_rx_look_ahead_flag\n", dev->name);
5232
5233        tp->adapter_flags &= ~(FORCED_16BIT_MODE);
5234        tp->adapter_flags |= RX_VALID_LOOKAHEAD;
5235
5236        if(tp->adapter_bus == BUS_ISA16_TYPE)
5237        {
5238                sword = *((__u16 *)(tp->ram_access));
5239                *((__u16 *)(tp->ram_access)) = 0x1234;
5240
5241                smctr_disable_16bit(dev);
5242                rword = *((__u16 *)(tp->ram_access));
5243                smctr_enable_16bit(dev);
5244
5245                if(rword != 0x1234)
5246                        tp->adapter_flags |= FORCED_16BIT_MODE;
5247
5248                *((__u16 *)(tp->ram_access)) = sword;
5249        }
5250
5251        return (0);
5252}
5253
5254static int smctr_set_trc_reset(int ioaddr)
5255{
5256        __u8 r;
5257
5258        r = inb(ioaddr + MSR);
5259        outb(MSR_RST | r, ioaddr + MSR);
5260
5261        return (0);
5262}
5263
5264/*
5265 * This function can be called if the adapter is busy or not.
5266 */
5267static int smctr_setup_single_cmd(struct net_device *dev,
5268        __u16 command, __u16 subcommand)
5269{
5270        struct net_local *tp = netdev_priv(dev);
5271        unsigned int err;
5272
5273        if(smctr_debug > 10)
5274                printk(KERN_DEBUG "%s: smctr_setup_single_cmd\n", dev->name);
5275
5276        if((err = smctr_wait_while_cbusy(dev)))
5277                return (err);
5278
5279        if((err = (unsigned int)smctr_wait_cmd(dev)))
5280                return (err);
5281
5282        tp->acb_head->cmd_done_status   = 0;
5283        tp->acb_head->cmd               = command;
5284        tp->acb_head->subcmd            = subcommand;
5285
5286        err = smctr_issue_resume_acb_cmd(dev);
5287
5288        return (err);
5289}
5290
5291/*
5292 * This function can not be called with the adapter busy.
5293 */
5294static int smctr_setup_single_cmd_w_data(struct net_device *dev,
5295        __u16 command, __u16 subcommand)
5296{
5297        struct net_local *tp = netdev_priv(dev);
5298
5299        tp->acb_head->cmd_done_status   = ACB_COMMAND_NOT_DONE;
5300        tp->acb_head->cmd               = command;
5301        tp->acb_head->subcmd            = subcommand;
5302        tp->acb_head->data_offset_lo
5303                = (__u16)TRC_POINTER(tp->misc_command_data);
5304
5305        return(smctr_issue_resume_acb_cmd(dev));
5306}
5307
5308static char *smctr_malloc(struct net_device *dev, __u16 size)
5309{
5310        struct net_local *tp = netdev_priv(dev);
5311        char *m;
5312
5313        m = (char *)(tp->ram_access + tp->sh_mem_used);
5314        tp->sh_mem_used += (__u32)size;
5315
5316        return (m);
5317}
5318
5319static int smctr_status_chg(struct net_device *dev)
5320{
5321        struct net_local *tp = netdev_priv(dev);
5322
5323        if(smctr_debug > 10)
5324                printk(KERN_DEBUG "%s: smctr_status_chg\n", dev->name);
5325
5326        switch(tp->status)
5327        {
5328                case OPEN:
5329                        break;
5330
5331                case CLOSED:
5332                        break;
5333
5334                /* Interrupt driven open() completion. XXX */
5335                case INITIALIZED:
5336                        tp->group_address_0 = 0;
5337                        tp->group_address[0] = 0;
5338                        tp->group_address[1] = 0;
5339                        tp->functional_address_0 = 0;
5340                        tp->functional_address[0] = 0;
5341                        tp->functional_address[1] = 0;
5342                        smctr_open_tr(dev);
5343                        break;
5344
5345                default:
5346                        printk(KERN_INFO "%s: status change unknown %x\n",
5347                                dev->name, tp->status);
5348                        break;
5349        }
5350
5351        return (0);
5352}
5353
5354static int smctr_trc_send_packet(struct net_device *dev, FCBlock *fcb,
5355        __u16 queue)
5356{
5357        struct net_local *tp = netdev_priv(dev);
5358        int err = 0;
5359
5360        if(smctr_debug > 10)
5361                printk(KERN_DEBUG "%s: smctr_trc_send_packet\n", dev->name);
5362
5363        fcb->info = FCB_CHAIN_END | FCB_ENABLE_TFS;
5364        if(tp->num_tx_fcbs[queue] != 1)
5365                fcb->back_ptr->info = FCB_INTERRUPT_ENABLE | FCB_ENABLE_TFS;
5366
5367        if(tp->tx_queue_status[queue] == NOT_TRANSMITING)
5368        {
5369                tp->tx_queue_status[queue] = TRANSMITING;
5370                err = smctr_issue_resume_tx_fcb_cmd(dev, queue);
5371        }
5372
5373        return (err);
5374}
5375
5376static __u16 smctr_tx_complete(struct net_device *dev, __u16 queue)
5377{
5378        struct net_local *tp = netdev_priv(dev);
5379        __u16 status, err = 0;
5380        int cstatus;
5381
5382        if(smctr_debug > 10)
5383                printk(KERN_DEBUG "%s: smctr_tx_complete\n", dev->name);
5384
5385        while((status = tp->tx_fcb_end[queue]->frame_status) != SUCCESS)
5386        {
5387                if(status & 0x7e00 )
5388                {
5389                        err = HARDWARE_FAILED;
5390                        break;
5391                }
5392
5393                if((err = smctr_update_tx_chain(dev, tp->tx_fcb_end[queue],
5394                        queue)) != SUCCESS)
5395                        break;
5396
5397                smctr_disable_16bit(dev);
5398
5399                if(tp->mode_bits & UMAC)
5400                {
5401                        if(!(status & (FCB_TX_STATUS_AR1 | FCB_TX_STATUS_AR2)))
5402                                cstatus = NO_SUCH_DESTINATION;
5403                        else
5404                        {
5405                                if(!(status & (FCB_TX_STATUS_CR1 | FCB_TX_STATUS_CR2)))
5406                                        cstatus = DEST_OUT_OF_RESOURCES;
5407                                else
5408                                {
5409                                        if(status & FCB_TX_STATUS_E)
5410                                                cstatus = MAX_COLLISIONS;
5411                                        else
5412                                                cstatus = SUCCESS;
5413                                }
5414                        }
5415                }
5416                else
5417                        cstatus = SUCCESS;
5418
5419                if(queue == BUG_QUEUE)
5420                        err = SUCCESS;
5421
5422                smctr_enable_16bit(dev);
5423                if(err != SUCCESS)
5424                        break;
5425        }
5426
5427        return (err);
5428}
5429
5430static unsigned short smctr_tx_move_frame(struct net_device *dev,
5431        struct sk_buff *skb, __u8 *pbuff, unsigned int bytes)
5432{
5433        struct net_local *tp = netdev_priv(dev);
5434        unsigned int ram_usable;
5435        __u32 flen, len, offset = 0;
5436        __u8 *frag, *page;
5437
5438        if(smctr_debug > 10)
5439                printk(KERN_DEBUG "%s: smctr_tx_move_frame\n", dev->name);
5440
5441        ram_usable = ((unsigned int)tp->ram_usable) << 10;
5442        frag       = skb->data;
5443        flen       = skb->len;
5444
5445        while(flen > 0 && bytes > 0)
5446        {
5447                smctr_set_page(dev, pbuff);
5448
5449                offset = SMC_PAGE_OFFSET(pbuff);
5450
5451                if(offset + flen > ram_usable)
5452                        len = ram_usable - offset;
5453                else
5454                        len = flen;
5455
5456                if(len > bytes)
5457                        len = bytes;
5458
5459                page = (char *) (offset + tp->ram_access);
5460                memcpy(page, frag, len);
5461
5462                flen -=len;
5463                bytes -= len;
5464                frag += len;
5465                pbuff += len;
5466        }
5467
5468        return (0);
5469}
5470
5471/* Update the error statistic counters for this adapter. */
5472static int smctr_update_err_stats(struct net_device *dev)
5473{
5474        struct net_local *tp = netdev_priv(dev);
5475        struct tr_statistics *tstat = &tp->MacStat;
5476
5477        if(tstat->internal_errors)
5478                tstat->internal_errors
5479                        += *(tp->misc_command_data + 0) & 0x00ff;
5480
5481        if(tstat->line_errors)
5482                tstat->line_errors += *(tp->misc_command_data + 0) >> 8;
5483
5484        if(tstat->A_C_errors)
5485                tstat->A_C_errors += *(tp->misc_command_data + 1) & 0x00ff;
5486
5487        if(tstat->burst_errors)
5488                tstat->burst_errors += *(tp->misc_command_data + 1) >> 8;
5489
5490        if(tstat->abort_delimiters)
5491                tstat->abort_delimiters += *(tp->misc_command_data + 2) >> 8;
5492
5493        if(tstat->recv_congest_count)
5494                tstat->recv_congest_count
5495                        += *(tp->misc_command_data + 3) & 0x00ff;
5496
5497        if(tstat->lost_frames)
5498                tstat->lost_frames
5499                        += *(tp->misc_command_data + 3) >> 8;
5500
5501        if(tstat->frequency_errors)
5502                tstat->frequency_errors += *(tp->misc_command_data + 4) & 0x00ff;
5503
5504        if(tstat->frame_copied_errors)
5505                 tstat->frame_copied_errors
5506                        += *(tp->misc_command_data + 4) >> 8;
5507
5508        if(tstat->token_errors)
5509                tstat->token_errors += *(tp->misc_command_data + 5) >> 8;
5510
5511        return (0);
5512}
5513
5514static int smctr_update_rx_chain(struct net_device *dev, __u16 queue)
5515{
5516        struct net_local *tp = netdev_priv(dev);
5517        FCBlock *fcb;
5518        BDBlock *bdb;
5519        __u16 size, len;
5520
5521        fcb = tp->rx_fcb_curr[queue];
5522        len = fcb->frame_length;
5523
5524        fcb->frame_status = 0;
5525        fcb->info = FCB_CHAIN_END;
5526        fcb->back_ptr->info = FCB_WARNING;
5527
5528        tp->rx_fcb_curr[queue] = tp->rx_fcb_curr[queue]->next_ptr;
5529
5530        /* update RX BDBs */
5531        size = (len >> RX_BDB_SIZE_SHIFT);
5532        if(len & RX_DATA_BUFFER_SIZE_MASK)
5533                size += sizeof(BDBlock);
5534        size &= (~RX_BDB_SIZE_MASK);
5535
5536        /* check if wrap around */
5537        bdb = (BDBlock *)((__u32)(tp->rx_bdb_curr[queue]) + (__u32)(size));
5538        if((__u32)bdb >= (__u32)tp->rx_bdb_end[queue])
5539        {
5540                bdb = (BDBlock *)((__u32)(tp->rx_bdb_head[queue])
5541                        + (__u32)(bdb) - (__u32)(tp->rx_bdb_end[queue]));
5542        }
5543
5544        bdb->back_ptr->info = BDB_CHAIN_END;
5545        tp->rx_bdb_curr[queue]->back_ptr->info = BDB_NOT_CHAIN_END;
5546        tp->rx_bdb_curr[queue] = bdb;
5547
5548        return (0);
5549}
5550
5551static int smctr_update_tx_chain(struct net_device *dev, FCBlock *fcb,
5552        __u16 queue)
5553{
5554        struct net_local *tp = netdev_priv(dev);
5555
5556        if(smctr_debug > 20)
5557                printk(KERN_DEBUG "smctr_update_tx_chain\n");
5558
5559        if(tp->num_tx_fcbs_used[queue] <= 0)
5560                return (HARDWARE_FAILED);
5561        else
5562        {
5563                if(tp->tx_buff_used[queue] < fcb->memory_alloc)
5564                {
5565                        tp->tx_buff_used[queue] = 0;
5566                        return (HARDWARE_FAILED);
5567                }
5568
5569                tp->tx_buff_used[queue] -= fcb->memory_alloc;
5570
5571                /* if all transmit buffer are cleared
5572                 * need to set the tx_buff_curr[] to tx_buff_head[]
5573                 * otherwise, tx buffer will be segregate and cannot
5574                 * accommodate and buffer greater than (curr - head) and
5575                 * (end - curr) since we do not allow wrap around allocation.
5576                 */
5577                if(tp->tx_buff_used[queue] == 0)
5578                        tp->tx_buff_curr[queue] = tp->tx_buff_head[queue];
5579
5580                tp->num_tx_fcbs_used[queue]--;
5581                fcb->frame_status = 0;
5582                tp->tx_fcb_end[queue] = fcb->next_ptr;
5583                netif_wake_queue(dev);
5584                return (0);
5585        }
5586}
5587
5588static int smctr_wait_cmd(struct net_device *dev)
5589{
5590        struct net_local *tp = netdev_priv(dev);
5591        unsigned int loop_count = 0x20000;
5592
5593        if(smctr_debug > 10)
5594                printk(KERN_DEBUG "%s: smctr_wait_cmd\n", dev->name);
5595
5596        while(loop_count)
5597        {
5598                if(tp->acb_head->cmd_done_status & ACB_COMMAND_DONE)
5599                        break;
5600                udelay(1);
5601                loop_count--;
5602        }
5603
5604        if(loop_count == 0)
5605                return(HARDWARE_FAILED);
5606
5607        if(tp->acb_head->cmd_done_status & 0xff)
5608                return(HARDWARE_FAILED);
5609
5610        return (0);
5611}
5612
5613static int smctr_wait_while_cbusy(struct net_device *dev)
5614{
5615        struct net_local *tp = netdev_priv(dev);
5616        unsigned int timeout = 0x20000;
5617        int ioaddr = dev->base_addr;
5618        __u8 r;
5619
5620        if(tp->bic_type == BIC_585_CHIP)
5621        {
5622                while(timeout)
5623                {
5624                        r = inb(ioaddr + HWR);
5625                        if((r & HWR_CBUSY) == 0)
5626                                break;
5627                        timeout--;
5628                }
5629        }
5630        else
5631        {
5632                while(timeout)
5633                {
5634                        r = inb(ioaddr + CSR);
5635                        if((r & CSR_CBUSY) == 0)
5636                                break;
5637                        timeout--;
5638                }
5639        }
5640
5641        if(timeout)
5642                return (0);
5643        else
5644                return (HARDWARE_FAILED);
5645}
5646
5647#ifdef MODULE
5648
5649static struct net_device* dev_smctr[SMCTR_MAX_ADAPTERS];
5650static int io[SMCTR_MAX_ADAPTERS];
5651static int irq[SMCTR_MAX_ADAPTERS];
5652
5653MODULE_LICENSE("GPL");
5654
5655module_param_array(io, int, NULL, 0);
5656module_param_array(irq, int, NULL, 0);
5657module_param(ringspeed, int, 0);
5658
5659static struct net_device * __init setup_card(int n)
5660{
5661        struct net_device *dev = alloc_trdev(sizeof(struct net_local));
5662        int err;
5663        
5664        if (!dev)
5665                return ERR_PTR(-ENOMEM);
5666
5667        dev->irq = irq[n];
5668        err = smctr_probe1(dev, io[n]);
5669        if (err) 
5670                goto out;
5671                
5672        err = register_netdev(dev);
5673        if (err)
5674                goto out1;
5675        return dev;
5676 out1:
5677#ifdef CONFIG_MCA_LEGACY
5678        { struct net_local *tp = netdev_priv(dev);
5679          if (tp->slot_num)
5680                mca_mark_as_unused(tp->slot_num);
5681        }
5682#endif
5683        release_region(dev->base_addr, SMCTR_IO_EXTENT);
5684        free_irq(dev->irq, dev);
5685out:
5686        free_netdev(dev);
5687        return ERR_PTR(err);
5688}
5689
5690int __init init_module(void)
5691{
5692        int i, found = 0;
5693        struct net_device *dev;
5694
5695        for(i = 0; i < SMCTR_MAX_ADAPTERS; i++) {
5696                dev = io[0]? setup_card(i) : smctr_probe(-1);
5697                if (!IS_ERR(dev)) {
5698                        ++found;
5699                        dev_smctr[i] = dev;
5700                }
5701        }
5702
5703        return found ? 0 : -ENODEV;
5704}
5705
5706void __exit cleanup_module(void)
5707{
5708        int i;
5709
5710        for(i = 0; i < SMCTR_MAX_ADAPTERS; i++) {
5711                struct net_device *dev = dev_smctr[i];
5712
5713                if (dev) {
5714
5715                        unregister_netdev(dev);
5716#ifdef CONFIG_MCA_LEGACY
5717                        { struct net_local *tp = netdev_priv(dev);
5718                        if (tp->slot_num)
5719                                mca_mark_as_unused(tp->slot_num);
5720                        }
5721#endif
5722                        release_region(dev->base_addr, SMCTR_IO_EXTENT);
5723                        if (dev->irq)
5724                                free_irq(dev->irq, dev);
5725
5726                        free_netdev(dev);
5727                }
5728        }
5729}
5730#endif /* MODULE */
5731