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   1 /*
   2   $Id: fore200e.c,v 1.5 2000/04/14 10:10:34 davem Exp $
   3
   4   A FORE Systems 200E-series driver for ATM on Linux.
   5   Christophe Lizzi (lizzi@cnam.fr), October 1999-March 2003.
   6
   7   Based on the PCA-200E driver from Uwe Dannowski (Uwe.Dannowski@inf.tu-dresden.de).
   8
   9   This driver simultaneously supports PCA-200E and SBA-200E adapters
  10   on i386, alpha (untested), powerpc, sparc and sparc64 architectures.
  11
  12   This program is free software; you can redistribute it and/or modify
  13   it under the terms of the GNU General Public License as published by
  14   the Free Software Foundation; either version 2 of the License, or
  15   (at your option) any later version.
  16
  17   This program is distributed in the hope that it will be useful,
  18   but WITHOUT ANY WARRANTY; without even the implied warranty of
  19   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20   GNU General Public License for more details.
  21
  22   You should have received a copy of the GNU General Public License
  23   along with this program; if not, write to the Free Software
  24   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  25 */
  26
  27
  28 #include <linux/kernel.h>
  29 #include <linux/slab.h>
  30 #include <linux/init.h>
  31 #include <linux/capability.h>
  32 #include <linux/sched.h>
  33 #include <linux/interrupt.h>
  34 #include <linux/bitops.h>
  35 #include <linux/pci.h>
  36 #include <linux/module.h>
  37 #include <linux/atmdev.h>
  38 #include <linux/sonet.h>
  39 #include <linux/atm_suni.h>
  40 #include <linux/dma-mapping.h>
  41 #include <linux/delay.h>
  42 #include <asm/io.h>
  43 #include <asm/string.h>
  44 #include <asm/page.h>
  45 #include <asm/irq.h>
  46 #include <asm/dma.h>
  47 #include <asm/byteorder.h>
  48 #include <asm/uaccess.h>
  49 #include <asm/atomic.h>
  50
  51 #ifdef CONFIG_ATM_FORE200E_SBA
  52 #include <asm/idprom.h>
  53 #include <asm/sbus.h>
  54 #include <asm/openprom.h>
  55 #include <asm/oplib.h>
  56 #include <asm/pgtable.h>
  57 #endif
  58
  59 #if defined(CONFIG_ATM_FORE200E_USE_TASKLET) /* defer interrupt work to a tasklet */
  60 #define FORE200E_USE_TASKLET
  61 #endif
  62
  63 #if 0 /* enable the debugging code of the buffer supply queues */
  64 #define FORE200E_BSQ_DEBUG
  65 #endif
  66
  67 #if 1 /* ensure correct handling of 52-byte AAL0 SDUs expected by atmdump-like apps */
  68 #define FORE200E_52BYTE_AAL0_SDU
  69 #endif
  70
  71 #include "fore200e.h"
  72 #include "suni.h"
  73
  74 #define FORE200E_VERSION "0.3e"
  75
  76 #define FORE200E         "fore200e: "
  77
  78 #if 0 /* override .config */
  79 #define CONFIG_ATM_FORE200E_DEBUG 1
  80 #endif
  81 #if defined(CONFIG_ATM_FORE200E_DEBUG) && (CONFIG_ATM_FORE200E_DEBUG > 0)
  82 #define DPRINTK(level, format, args...)  do { if (CONFIG_ATM_FORE200E_DEBUG >= (level)) \
  83                                                   printk(FORE200E format, ##args); } while (0)
  84 #else
  85 #define DPRINTK(level, format, args...)  do {} while (0)
  86 #endif
  87
  88
  89 #define FORE200E_ALIGN(addr, alignment) \
  90         ((((unsigned long)(addr) + (alignment - 1)) & ~(alignment - 1)) - (unsigned long)(addr))
  91
  92 #define FORE200E_DMA_INDEX(dma_addr, type, index)  ((dma_addr) + (index) * sizeof(type))
  93
  94 #define FORE200E_INDEX(virt_addr, type, index)     (&((type *)(virt_addr))[ index ])
  95
  96 #define FORE200E_NEXT_ENTRY(index, modulo)         (index = ++(index) % (modulo))
  97
  98 #if 1
  99 #define ASSERT(expr)     if (!(expr)) { \
 100                              printk(FORE200E "assertion failed! %s[%d]: %s\n", \
 101                                     __FUNCTION__, __LINE__, #expr); \
 102                              panic(FORE200E "%s", __FUNCTION__); \
 103                          }
 104 #else
 105 #define ASSERT(expr)     do {} while (0)
 106 #endif
 107
 108
 109 static const struct atmdev_ops   fore200e_ops;
 110 static const struct fore200e_bus fore200e_bus[];
 111
 112 static LIST_HEAD(fore200e_boards);
 113
 114
 115 MODULE_AUTHOR("Christophe Lizzi - credits to Uwe Dannowski and Heikki Vatiainen");
 116 MODULE_DESCRIPTION("FORE Systems 200E-series ATM driver - version " FORE200E_VERSION);
 117 MODULE_SUPPORTED_DEVICE("PCA-200E, SBA-200E");
 118
 119
 120 static const int fore200e_rx_buf_nbr[ BUFFER_SCHEME_NBR ][ BUFFER_MAGN_NBR ] = {
 121     { BUFFER_S1_NBR, BUFFER_L1_NBR },
 122     { BUFFER_S2_NBR, BUFFER_L2_NBR }
 123 };
 124
 125 static const int fore200e_rx_buf_size[ BUFFER_SCHEME_NBR ][ BUFFER_MAGN_NBR ] = {
 126     { BUFFER_S1_SIZE, BUFFER_L1_SIZE },
 127     { BUFFER_S2_SIZE, BUFFER_L2_SIZE }
 128 };
 129
 130
 131 #if defined(CONFIG_ATM_FORE200E_DEBUG) && (CONFIG_ATM_FORE200E_DEBUG > 0)
 132 static const char* fore200e_traffic_class[] = { "NONE", "UBR", "CBR", "VBR", "ABR", "ANY" };
 133 #endif
 134
 135
 136 #if 0 /* currently unused */
 137 static int
 138 fore200e_fore2atm_aal(enum fore200e_aal aal)
 139 {
 140     switch(aal) {
 141     case FORE200E_AAL0:  return ATM_AAL0;
 142     case FORE200E_AAL34: return ATM_AAL34;
 143     case FORE200E_AAL5:  return ATM_AAL5;
 144     }
 145
 146     return -EINVAL;
 147 }
 148 #endif
 149
 150
 151 static enum fore200e_aal
 152 fore200e_atm2fore_aal(int aal)
 153 {
 154     switch(aal) {
 155     case ATM_AAL0:  return FORE200E_AAL0;
 156     case ATM_AAL34: return FORE200E_AAL34;
 157     case ATM_AAL1:
 158     case ATM_AAL2:
 159     case ATM_AAL5:  return FORE200E_AAL5;
 160     }
 161
 162     return -EINVAL;
 163 }
 164
 165
 166 static char*
 167 fore200e_irq_itoa(int irq)
 168 {
 169     static char str[8];
 170     sprintf(str, "%d", irq);
 171     return str;
 172 }
 173
 174
 175 static void*
 176 fore200e_kmalloc(int size, gfp_t flags)
 177 {
 178     void *chunk = kzalloc(size, flags);
 179
 180     if (!chunk)
 181         printk(FORE200E "kmalloc() failed, requested size = %d, flags = 0x%x\n",                        size, flags);
 182
 183     return chunk;
 184 }
 185
 186
 187 static void
 188 fore200e_kfree(void* chunk)
 189 {
 190     kfree(chunk);
 191 }
 192
 193
 194 /* allocate and align a chunk of memory intended to hold the data behing exchanged
 195    between the driver and the adapter (using streaming DVMA) */
 196
 197 static int
 198 fore200e_chunk_alloc(struct fore200e* fore200e, struct chunk* chunk, int size, int alignment, int direction)
 199 {
 200     unsigned long offset = 0;
 201
 202     if (alignment <= sizeof(int))
 203         alignment = 0;
 204
 205     chunk->alloc_size = size + alignment;
 206     chunk->align_size = size;
 207     chunk->direction  = direction;
 208
 209     chunk->alloc_addr = fore200e_kmalloc(chunk->alloc_size, GFP_KERNEL | GFP_DMA);
 210     if (chunk->alloc_addr == NULL)
 211         return -ENOMEM;
 212
 213     if (alignment > 0)
 214         offset = FORE200E_ALIGN(chunk->alloc_addr, alignment);
 215
 216     chunk->align_addr = chunk->alloc_addr + offset;
 217
 218     chunk->dma_addr = fore200e->bus->dma_map(fore200e, chunk->align_addr, chunk->align_size, direction);
 219
 220     return 0;
 221 }
 222
 223
 224 /* free a chunk of memory */
 225
 226 static void
 227 fore200e_chunk_free(struct fore200e* fore200e, struct chunk* chunk)
 228 {
 229     fore200e->bus->dma_unmap(fore200e, chunk->dma_addr, chunk->dma_size, chunk->direction);
 230
 231     fore200e_kfree(chunk->alloc_addr);
 232 }
 233
 234
 235 static void
 236 fore200e_spin(int msecs)
 237 {
 238     unsigned long timeout = jiffies + msecs_to_jiffies(msecs);
 239     while (time_before(jiffies, timeout));
 240 }
 241
 242
 243 static int
 244 fore200e_poll(struct fore200e* fore200e, volatile u32* addr, u32 val, int msecs)
 245 {
 246     unsigned long timeout = jiffies + msecs_to_jiffies(msecs);
 247     int           ok;
 248
 249     mb();
 250     do {
 251         if ((ok = (*addr == val)) || (*addr & STATUS_ERROR))
 252             break;
 253
 254     } while (time_before(jiffies, timeout));
 255
 256 #if 1
 257     if (!ok) {
 258         printk(FORE200E "cmd polling failed, got status 0x%08x, expected 0x%08x\n",
 259                *addr, val);
 260     }
 261 #endif
 262
 263     return ok;
 264 }
 265
 266
 267 static int
 268 fore200e_io_poll(struct fore200e* fore200e, volatile u32 __iomem *addr, u32 val, int msecs)
 269 {
 270     unsigned long timeout = jiffies + msecs_to_jiffies(msecs);
 271     int           ok;
 272
 273     do {
 274         if ((ok = (fore200e->bus->read(addr) == val)))
 275             break;
 276
 277     } while (time_before(jiffies, timeout));
 278
 279 #if 1
 280     if (!ok) {
 281         printk(FORE200E "I/O polling failed, got status 0x%08x, expected 0x%08x\n",
 282                fore200e->bus->read(addr), val);
 283     }
 284 #endif
 285
 286     return ok;
 287 }
 288
 289
 290 static void
 291 fore200e_free_rx_buf(struct fore200e* fore200e)
 292 {
 293     int scheme, magn, nbr;
 294     struct buffer* buffer;
 295
 296     for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) {
 297         for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) {
 298
 299             if ((buffer = fore200e->host_bsq[ scheme ][ magn ].buffer) != NULL) {
 300
 301                 for (nbr = 0; nbr < fore200e_rx_buf_nbr[ scheme ][ magn ]; nbr++) {
 302
 303                     struct chunk* data = &buffer[ nbr ].data;
 304
 305                     if (data->alloc_addr != NULL)
 306                         fore200e_chunk_free(fore200e, data);
 307                 }
 308             }
 309         }
 310     }
 311 }
 312
 313
 314 static void
 315 fore200e_uninit_bs_queue(struct fore200e* fore200e)
 316 {
 317     int scheme, magn;
 318
 319     for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) {
 320         for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) {
 321
 322             struct chunk* status    = &fore200e->host_bsq[ scheme ][ magn ].status;
 323             struct chunk* rbd_block = &fore200e->host_bsq[ scheme ][ magn ].rbd_block;
 324
 325             if (status->alloc_addr)
 326                 fore200e->bus->dma_chunk_free(fore200e, status);
 327
 328             if (rbd_block->alloc_addr)
 329                 fore200e->bus->dma_chunk_free(fore200e, rbd_block);
 330         }
 331     }
 332 }
 333
 334
 335 static int
 336 fore200e_reset(struct fore200e* fore200e, int diag)
 337 {
 338     int ok;
 339
 340     fore200e->cp_monitor = fore200e->virt_base + FORE200E_CP_MONITOR_OFFSET;
 341
 342     fore200e->bus->write(BSTAT_COLD_START, &fore200e->cp_monitor->bstat);
 343
 344     fore200e->bus->reset(fore200e);
 345
 346     if (diag) {
 347         ok = fore200e_io_poll(fore200e, &fore200e->cp_monitor->bstat, BSTAT_SELFTEST_OK, 1000);
 348         if (ok == 0) {
 349
 350             printk(FORE200E "device %s self-test failed\n", fore200e->name);
 351             return -ENODEV;
 352         }
 353
 354         printk(FORE200E "device %s self-test passed\n", fore200e->name);
 355
 356         fore200e->state = FORE200E_STATE_RESET;
 357     }
 358
 359     return 0;
 360 }
 361
 362
 363 static void
 364 fore200e_shutdown(struct fore200e* fore200e)
 365 {
 366     printk(FORE200E "removing device %s at 0x%lx, IRQ %s\n",
 367            fore200e->name, fore200e->phys_base,
 368            fore200e_irq_itoa(fore200e->irq));
 369
 370     if (fore200e->state > FORE200E_STATE_RESET) {
 371         /* first, reset the board to prevent further interrupts or data transfers */
 372         fore200e_reset(fore200e, 0);
 373     }
 374
 375     /* then, release all allocated resources */
 376     switch(fore200e->state) {
 377
 378     case FORE200E_STATE_COMPLETE:
 379         kfree(fore200e->stats);
 380
 381     case FORE200E_STATE_IRQ:
 382         free_irq(fore200e->irq, fore200e->atm_dev);
 383
 384     case FORE200E_STATE_ALLOC_BUF:
 385         fore200e_free_rx_buf(fore200e);
 386
 387     case FORE200E_STATE_INIT_BSQ:
 388         fore200e_uninit_bs_queue(fore200e);
 389
 390     case FORE200E_STATE_INIT_RXQ:
 391         fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_rxq.status);
 392         fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_rxq.rpd);
 393
 394     case FORE200E_STATE_INIT_TXQ:
 395         fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_txq.status);
 396         fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_txq.tpd);
 397
 398     case FORE200E_STATE_INIT_CMDQ:
 399         fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_cmdq.status);
 400
 401     case FORE200E_STATE_INITIALIZE:
 402         /* nothing to do for that state */
 403
 404     case FORE200E_STATE_START_FW:
 405         /* nothing to do for that state */
 406
 407     case FORE200E_STATE_LOAD_FW:
 408         /* nothing to do for that state */
 409
 410     case FORE200E_STATE_RESET:
 411         /* nothing to do for that state */
 412
 413     case FORE200E_STATE_MAP:
 414         fore200e->bus->unmap(fore200e);
 415
 416     case FORE200E_STATE_CONFIGURE:
 417         /* nothing to do for that state */
 418
 419     case FORE200E_STATE_REGISTER:
 420         /* XXX shouldn't we *start* by deregistering the device? */
 421         atm_dev_deregister(fore200e->atm_dev);
 422
 423     case FORE200E_STATE_BLANK:
 424         /* nothing to do for that state */
 425         break;
 426     }
 427 }
 428
 429
 430 #ifdef CONFIG_ATM_FORE200E_PCA
 431
 432 static u32 fore200e_pca_read(volatile u32 __iomem *addr)
 433 {
 434     /* on big-endian hosts, the board is configured to convert
 435        the endianess of slave RAM accesses  */
 436     return le32_to_cpu(readl(addr));
 437 }
 438
 439
 440 static void fore200e_pca_write(u32 val, volatile u32 __iomem *addr)
 441 {
 442     /* on big-endian hosts, the board is configured to convert
 443        the endianess of slave RAM accesses  */
 444     writel(cpu_to_le32(val), addr);
 445 }
 446
 447
 448 static u32
 449 fore200e_pca_dma_map(struct fore200e* fore200e, void* virt_addr, int size, int direction)
 450 {
 451     u32 dma_addr = pci_map_single((struct pci_dev*)fore200e->bus_dev, virt_addr, size, direction);
 452
 453     DPRINTK(3, "PCI DVMA mapping: virt_addr = 0x%p, size = %d, direction = %d,  --> dma_addr = 0x%08x\n",
 454             virt_addr, size, direction, dma_addr);
 455
 456     return dma_addr;
 457 }
 458
 459
 460 static void
 461 fore200e_pca_dma_unmap(struct fore200e* fore200e, u32 dma_addr, int size, int direction)
 462 {
 463     DPRINTK(3, "PCI DVMA unmapping: dma_addr = 0x%08x, size = %d, direction = %d\n",
 464             dma_addr, size, direction);
 465
 466     pci_unmap_single((struct pci_dev*)fore200e->bus_dev, dma_addr, size, direction);
 467 }
 468
 469
 470 static void
 471 fore200e_pca_dma_sync_for_cpu(struct fore200e* fore200e, u32 dma_addr, int size, int direction)
 472 {
 473     DPRINTK(3, "PCI DVMA sync: dma_addr = 0x%08x, size = %d, direction = %d\n", dma_addr, size, direction);
 474
 475     pci_dma_sync_single_for_cpu((struct pci_dev*)fore200e->bus_dev, dma_addr, size, direction);
 476 }
 477
 478 static void
 479 fore200e_pca_dma_sync_for_device(struct fore200e* fore200e, u32 dma_addr, int size, int direction)
 480 {
 481     DPRINTK(3, "PCI DVMA sync: dma_addr = 0x%08x, size = %d, direction = %d\n", dma_addr, size, direction);
 482
 483     pci_dma_sync_single_for_device((struct pci_dev*)fore200e->bus_dev, dma_addr, size, direction);
 484 }
 485
 486
 487 /* allocate a DMA consistent chunk of memory intended to act as a communication mechanism
 488    (to hold descriptors, status, queues, etc.) shared by the driver and the adapter */
 489
 490 static int
 491 fore200e_pca_dma_chunk_alloc(struct fore200e* fore200e, struct chunk* chunk,
 492                              int size, int nbr, int alignment)
 493 {
 494     /* returned chunks are page-aligned */
 495     chunk->alloc_size = size * nbr;
 496     chunk->alloc_addr = pci_alloc_consistent((struct pci_dev*)fore200e->bus_dev,
 497                                              chunk->alloc_size,
 498                                              &chunk->dma_addr);
 499
 500     if ((chunk->alloc_addr == NULL) || (chunk->dma_addr == 0))
 501         return -ENOMEM;
 502
 503     chunk->align_addr = chunk->alloc_addr;
 504
 505     return 0;
 506 }
 507
 508
 509 /* free a DMA consistent chunk of memory */
 510
 511 static void
 512 fore200e_pca_dma_chunk_free(struct fore200e* fore200e, struct chunk* chunk)
 513 {
 514     pci_free_consistent((struct pci_dev*)fore200e->bus_dev,
 515                         chunk->alloc_size,
 516                         chunk->alloc_addr,
 517                         chunk->dma_addr);
 518 }
 519
 520
 521 static int
 522 fore200e_pca_irq_check(struct fore200e* fore200e)
 523 {
 524     /* this is a 1 bit register */
 525     int irq_posted = readl(fore200e->regs.pca.psr);
 526
 527 #if defined(CONFIG_ATM_FORE200E_DEBUG) && (CONFIG_ATM_FORE200E_DEBUG == 2)
 528     if (irq_posted && (readl(fore200e->regs.pca.hcr) & PCA200E_HCR_OUTFULL)) {
 529         DPRINTK(2,"FIFO OUT full, device %d\n", fore200e->atm_dev->number);
 530     }
 531 #endif
 532
 533     return irq_posted;
 534 }
 535
 536
 537 static void
 538 fore200e_pca_irq_ack(struct fore200e* fore200e)
 539 {
 540     writel(PCA200E_HCR_CLRINTR, fore200e->regs.pca.hcr);
 541 }
 542
 543
 544 static void
 545 fore200e_pca_reset(struct fore200e* fore200e)
 546 {
 547     writel(PCA200E_HCR_RESET, fore200e->regs.pca.hcr);
 548     fore200e_spin(10);
 549     writel(0, fore200e->regs.pca.hcr);
 550 }
 551
 552
 553 static int __devinit
 554 fore200e_pca_map(struct fore200e* fore200e)
 555 {
 556     DPRINTK(2, "device %s being mapped in memory\n", fore200e->name);
 557
 558     fore200e->virt_base = ioremap(fore200e->phys_base, PCA200E_IOSPACE_LENGTH);
 559
 560     if (fore200e->virt_base == NULL) {
 561         printk(FORE200E "can't map device %s\n", fore200e->name);
 562         return -EFAULT;
 563     }
 564
 565     DPRINTK(1, "device %s mapped to 0x%p\n", fore200e->name, fore200e->virt_base);
 566
 567     /* gain access to the PCA specific registers  */
 568     fore200e->regs.pca.hcr = fore200e->virt_base + PCA200E_HCR_OFFSET;
 569     fore200e->regs.pca.imr = fore200e->virt_base + PCA200E_IMR_OFFSET;
 570     fore200e->regs.pca.psr = fore200e->virt_base + PCA200E_PSR_OFFSET;
 571
 572     fore200e->state = FORE200E_STATE_MAP;
 573     return 0;
 574 }
 575
 576
 577 static void
 578 fore200e_pca_unmap(struct fore200e* fore200e)
 579 {
 580     DPRINTK(2, "device %s being unmapped from memory\n", fore200e->name);
 581
 582     if (fore200e->virt_base != NULL)
 583         iounmap(fore200e->virt_base);
 584 }
 585
 586
 587 static int __devinit
 588 fore200e_pca_configure(struct fore200e* fore200e)
 589 {
 590     struct pci_dev* pci_dev = (struct pci_dev*)fore200e->bus_dev;
 591     u8              master_ctrl, latency;
 592
 593     DPRINTK(2, "device %s being configured\n", fore200e->name);
 594
 595     if ((pci_dev->irq == 0) || (pci_dev->irq == 0xFF)) {
 596         printk(FORE200E "incorrect IRQ setting - misconfigured PCI-PCI bridge?\n");
 597         return -EIO;
 598     }
 599
 600     pci_read_config_byte(pci_dev, PCA200E_PCI_MASTER_CTRL, &master_ctrl);
 601
 602     master_ctrl = master_ctrl
 603 #if defined(__BIG_ENDIAN)
 604         /* request the PCA board to convert the endianess of slave RAM accesses */
 605         | PCA200E_CTRL_CONVERT_ENDIAN
 606 #endif
 607 #if 0
 608         | PCA200E_CTRL_DIS_CACHE_RD
 609         | PCA200E_CTRL_DIS_WRT_INVAL
 610         | PCA200E_CTRL_ENA_CONT_REQ_MODE
 611         | PCA200E_CTRL_2_CACHE_WRT_INVAL
 612 #endif
 613         | PCA200E_CTRL_LARGE_PCI_BURSTS;
 614
 615     pci_write_config_byte(pci_dev, PCA200E_PCI_MASTER_CTRL, master_ctrl);
 616
 617     /* raise latency from 32 (default) to 192, as this seems to prevent NIC
 618        lockups (under heavy rx loads) due to continuous 'FIFO OUT full' condition.
 619        this may impact the performances of other PCI devices on the same bus, though */
 620     latency = 192;
 621     pci_write_config_byte(pci_dev, PCI_LATENCY_TIMER, latency);
 622
 623     fore200e->state = FORE200E_STATE_CONFIGURE;
 624     return 0;
 625 }
 626
 627
 628 static int __init
 629 fore200e_pca_prom_read(struct fore200e* fore200e, struct prom_data* prom)
 630 {
 631     struct host_cmdq*       cmdq  = &fore200e->host_cmdq;
 632     struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ];
 633     struct prom_opcode      opcode;
 634     int                     ok;
 635     u32                     prom_dma;
 636
 637     FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD);
 638
 639     opcode.opcode = OPCODE_GET_PROM;
 640     opcode.pad    = 0;
 641
 642     prom_dma = fore200e->bus->dma_map(fore200e, prom, sizeof(struct prom_data), DMA_FROM_DEVICE);
 643
 644     fore200e->bus->write(prom_dma, &entry->cp_entry->cmd.prom_block.prom_haddr);
 645
 646     *entry->status = STATUS_PENDING;
 647
 648     fore200e->bus->write(*(u32*)&opcode, (u32 __iomem *)&entry->cp_entry->cmd.prom_block.opcode);
 649
 650     ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400);
 651
 652     *entry->status = STATUS_FREE;
 653
 654     fore200e->bus->dma_unmap(fore200e, prom_dma, sizeof(struct prom_data), DMA_FROM_DEVICE);
 655
 656     if (ok == 0) {
 657         printk(FORE200E "unable to get PROM data from device %s\n", fore200e->name);
 658         return -EIO;
 659     }
 660
 661 #if defined(__BIG_ENDIAN)
 662
 663 #define swap_here(addr) (*((u32*)(addr)) = swab32( *((u32*)(addr)) ))
 664
 665     /* MAC address is stored as little-endian */
 666     swap_here(&prom->mac_addr[0]);
 667     swap_here(&prom->mac_addr[4]);
 668 #endif
 669
 670     return 0;
 671 }
 672
 673
 674 static int
 675 fore200e_pca_proc_read(struct fore200e* fore200e, char *page)
 676 {
 677     struct pci_dev* pci_dev = (struct pci_dev*)fore200e->bus_dev;
 678
 679     return sprintf(page, "   PCI bus/slot/function:\t%d/%d/%d\n",
 680                    pci_dev->bus->number, PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
 681 }
 682
 683 #endif /* CONFIG_ATM_FORE200E_PCA */
 684
 685
 686 #ifdef CONFIG_ATM_FORE200E_SBA
 687
 688 static u32
 689 fore200e_sba_read(volatile u32 __iomem *addr)
 690 {
 691     return sbus_readl(addr);
 692 }
 693
 694
 695 static void
 696 fore200e_sba_write(u32 val, volatile u32 __iomem *addr)
 697 {
 698     sbus_writel(val, addr);
 699 }
 700
 701
 702 static u32
 703 fore200e_sba_dma_map(struct fore200e* fore200e, void* virt_addr, int size, int direction)
 704 {
 705     u32 dma_addr = sbus_map_single((struct sbus_dev*)fore200e->bus_dev, virt_addr, size, direction);
 706
 707     DPRINTK(3, "SBUS DVMA mapping: virt_addr = 0x%p, size = %d, direction = %d --> dma_addr = 0x%08x\n",
 708             virt_addr, size, direction, dma_addr);
 709
 710     return dma_addr;
 711 }
 712
 713
 714 static void
 715 fore200e_sba_dma_unmap(struct fore200e* fore200e, u32 dma_addr, int size, int direction)
 716 {
 717     DPRINTK(3, "SBUS DVMA unmapping: dma_addr = 0x%08x, size = %d, direction = %d,\n",
 718             dma_addr, size, direction);
 719
 720     sbus_unmap_single((struct sbus_dev*)fore200e->bus_dev, dma_addr, size, direction);
 721 }
 722
 723
 724 static void
 725 fore200e_sba_dma_sync_for_cpu(struct fore200e* fore200e, u32 dma_addr, int size, int direction)
 726 {
 727     DPRINTK(3, "SBUS DVMA sync: dma_addr = 0x%08x, size = %d, direction = %d\n", dma_addr, size, direction);
 728
 729     sbus_dma_sync_single_for_cpu((struct sbus_dev*)fore200e->bus_dev, dma_addr, size, direction);
 730 }
 731
 732 static void
 733 fore200e_sba_dma_sync_for_device(struct fore200e* fore200e, u32 dma_addr, int size, int direction)
 734 {
 735     DPRINTK(3, "SBUS DVMA sync: dma_addr = 0x%08x, size = %d, direction = %d\n", dma_addr, size, direction);
 736
 737     sbus_dma_sync_single_for_device((struct sbus_dev*)fore200e->bus_dev, dma_addr, size, direction);
 738 }
 739
 740
 741 /* allocate a DVMA consistent chunk of memory intended to act as a communication mechanism
 742    (to hold descriptors, status, queues, etc.) shared by the driver and the adapter */
 743
 744 static int
 745 fore200e_sba_dma_chunk_alloc(struct fore200e* fore200e, struct chunk* chunk,
 746                              int size, int nbr, int alignment)
 747 {
 748     chunk->alloc_size = chunk->align_size = size * nbr;
 749
 750     /* returned chunks are page-aligned */
 751     chunk->alloc_addr = sbus_alloc_consistent((struct sbus_dev*)fore200e->bus_dev,
 752                                               chunk->alloc_size,
 753                                               &chunk->dma_addr);
 754
 755     if ((chunk->alloc_addr == NULL) || (chunk->dma_addr == 0))
 756         return -ENOMEM;
 757
 758     chunk->align_addr = chunk->alloc_addr;
 759
 760     return 0;
 761 }
 762
 763
 764 /* free a DVMA consistent chunk of memory */
 765
 766 static void
 767 fore200e_sba_dma_chunk_free(struct fore200e* fore200e, struct chunk* chunk)
 768 {
 769     sbus_free_consistent((struct sbus_dev*)fore200e->bus_dev,
 770                          chunk->alloc_size,
 771                          chunk->alloc_addr,
 772                          chunk->dma_addr);
 773 }
 774
 775
 776 static void
 777 fore200e_sba_irq_enable(struct fore200e* fore200e)
 778 {
 779     u32 hcr = fore200e->bus->read(fore200e->regs.sba.hcr) & SBA200E_HCR_STICKY;
 780     fore200e->bus->write(hcr | SBA200E_HCR_INTR_ENA, fore200e->regs.sba.hcr);
 781 }
 782
 783
 784 static int
 785 fore200e_sba_irq_check(struct fore200e* fore200e)
 786 {
 787     return fore200e->bus->read(fore200e->regs.sba.hcr) & SBA200E_HCR_INTR_REQ;
 788 }
 789
 790
 791 static void
 792 fore200e_sba_irq_ack(struct fore200e* fore200e)
 793 {
 794     u32 hcr = fore200e->bus->read(fore200e->regs.sba.hcr) & SBA200E_HCR_STICKY;
 795     fore200e->bus->write(hcr | SBA200E_HCR_INTR_CLR, fore200e->regs.sba.hcr);
 796 }
 797
 798
 799 static void
 800 fore200e_sba_reset(struct fore200e* fore200e)
 801 {
 802     fore200e->bus->write(SBA200E_HCR_RESET, fore200e->regs.sba.hcr);
 803     fore200e_spin(10);
 804     fore200e->bus->write(0, fore200e->regs.sba.hcr);
 805 }
 806
 807
 808 static int __init
 809 fore200e_sba_map(struct fore200e* fore200e)
 810 {
 811     struct sbus_dev* sbus_dev = (struct sbus_dev*)fore200e->bus_dev;
 812     unsigned int bursts;
 813
 814     /* gain access to the SBA specific registers  */
 815     fore200e->regs.sba.hcr = sbus_ioremap(&sbus_dev->resource[0], 0, SBA200E_HCR_LENGTH, "SBA HCR");
 816     fore200e->regs.sba.bsr = sbus_ioremap(&sbus_dev->resource[1], 0, SBA200E_BSR_LENGTH, "SBA BSR");
 817     fore200e->regs.sba.isr = sbus_ioremap(&sbus_dev->resource[2], 0, SBA200E_ISR_LENGTH, "SBA ISR");
 818     fore200e->virt_base    = sbus_ioremap(&sbus_dev->resource[3], 0, SBA200E_RAM_LENGTH, "SBA RAM");
 819
 820     if (fore200e->virt_base == NULL) {
 821         printk(FORE200E "unable to map RAM of device %s\n", fore200e->name);
 822         return -EFAULT;
 823     }
 824
 825     DPRINTK(1, "device %s mapped to 0x%p\n", fore200e->name, fore200e->virt_base);
 826
 827     fore200e->bus->write(0x02, fore200e->regs.sba.isr); /* XXX hardwired interrupt level */
 828
 829     /* get the supported DVMA burst sizes */
 830     bursts = prom_getintdefault(sbus_dev->bus->prom_node, "burst-sizes", 0x00);
 831
 832     if (sbus_can_dma_64bit(sbus_dev))
 833         sbus_set_sbus64(sbus_dev, bursts);
 834
 835     fore200e->state = FORE200E_STATE_MAP;
 836     return 0;
 837 }
 838
 839
 840 static void
 841 fore200e_sba_unmap(struct fore200e* fore200e)
 842 {
 843     sbus_iounmap(fore200e->regs.sba.hcr, SBA200E_HCR_LENGTH);
 844     sbus_iounmap(fore200e->regs.sba.bsr, SBA200E_BSR_LENGTH);
 845     sbus_iounmap(fore200e->regs.sba.isr, SBA200E_ISR_LENGTH);
 846     sbus_iounmap(fore200e->virt_base,    SBA200E_RAM_LENGTH);
 847 }
 848
 849
 850 static int __init
 851 fore200e_sba_configure(struct fore200e* fore200e)
 852 {
 853     fore200e->state = FORE200E_STATE_CONFIGURE;
 854     return 0;
 855 }
 856
 857
 858 static struct fore200e* __init
 859 fore200e_sba_detect(const struct fore200e_bus* bus, int index)
 860 {
 861     struct fore200e*          fore200e;
 862     struct sbus_bus* sbus_bus;
 863     struct sbus_dev* sbus_dev = NULL;
 864
 865     unsigned int     count = 0;
 866
 867     for_each_sbus (sbus_bus) {
 868         for_each_sbusdev (sbus_dev, sbus_bus) {
 869             if (strcmp(sbus_dev->prom_name, SBA200E_PROM_NAME) == 0) {
 870                 if (count >= index)
 871                     goto found;
 872                 count++;
 873             }
 874         }
 875     }
 876     return NULL;
 877
 878   found:
 879     if (sbus_dev->num_registers != 4) {
 880         printk(FORE200E "this %s device has %d instead of 4 registers\n",
 881                bus->model_name, sbus_dev->num_registers);
 882         return NULL;
 883     }
 884
 885     fore200e = fore200e_kmalloc(sizeof(struct fore200e), GFP_KERNEL);
 886     if (fore200e == NULL)
 887         return NULL;
 888
 889     fore200e->bus     = bus;
 890     fore200e->bus_dev = sbus_dev;
 891     fore200e->irq     = sbus_dev->irqs[ 0 ];
 892
 893     fore200e->phys_base = (unsigned long)sbus_dev;
 894
 895     sprintf(fore200e->name, "%s-%d", bus->model_name, index - 1);
 896
 897     return fore200e;
 898 }
 899
 900
 901 static int __init
 902 fore200e_sba_prom_read(struct fore200e* fore200e, struct prom_data* prom)
 903 {
 904     struct sbus_dev* sbus_dev = (struct sbus_dev*) fore200e->bus_dev;
 905     int                       len;
 906
 907     len = prom_getproperty(sbus_dev->prom_node, "macaddrlo2", &prom->mac_addr[ 4 ], 4);
 908     if (len < 0)
 909         return -EBUSY;
 910
 911     len = prom_getproperty(sbus_dev->prom_node, "macaddrhi4", &prom->mac_addr[ 2 ], 4);
 912     if (len < 0)
 913         return -EBUSY;
 914
 915     prom_getproperty(sbus_dev->prom_node, "serialnumber",
 916                      (char*)&prom->serial_number, sizeof(prom->serial_number));
 917
 918     prom_getproperty(sbus_dev->prom_node, "promversion",
 919                      (char*)&prom->hw_revision, sizeof(prom->hw_revision));
 920
 921     return 0;
 922 }
 923
 924
 925 static int
 926 fore200e_sba_proc_read(struct fore200e* fore200e, char *page)
 927 {
 928     struct sbus_dev* sbus_dev = (struct sbus_dev*)fore200e->bus_dev;
 929
 930     return sprintf(page, "   SBUS slot/device:\t\t%d/'%s'\n", sbus_dev->slot, sbus_dev->prom_name);
 931 }
 932 #endif /* CONFIG_ATM_FORE200E_SBA */
 933
 934
 935 static void
 936 fore200e_tx_irq(struct fore200e* fore200e)
 937 {
 938     struct host_txq*        txq = &fore200e->host_txq;
 939     struct host_txq_entry*  entry;
 940     struct atm_vcc*         vcc;
 941     struct fore200e_vc_map* vc_map;
 942
 943     if (fore200e->host_txq.txing == 0)
 944         return;
 945
 946     for (;;) {
 947
 948         entry = &txq->host_entry[ txq->tail ];
 949
 950         if ((*entry->status & STATUS_COMPLETE) == 0) {
 951             break;
 952         }
 953
 954         DPRINTK(3, "TX COMPLETED: entry = %p [tail = %d], vc_map = %p, skb = %p\n",
 955                 entry, txq->tail, entry->vc_map, entry->skb);
 956
 957         /* free copy of misaligned data */
 958         kfree(entry->data);
 959
 960         /* remove DMA mapping */
 961         fore200e->bus->dma_unmap(fore200e, entry->tpd->tsd[ 0 ].buffer, entry->tpd->tsd[ 0 ].length,
 962                                  DMA_TO_DEVICE);
 963
 964         vc_map = entry->vc_map;
 965
 966         /* vcc closed since the time the entry was submitted for tx? */
 967         if ((vc_map->vcc == NULL) ||
 968             (test_bit(ATM_VF_READY, &vc_map->vcc->flags) == 0)) {
 969
 970             DPRINTK(1, "no ready vcc found for PDU sent on device %d\n",
 971                     fore200e->atm_dev->number);
 972
 973             dev_kfree_skb_any(entry->skb);
 974         }
 975         else {
 976             ASSERT(vc_map->vcc);
 977
 978             /* vcc closed then immediately re-opened? */
 979             if (vc_map->incarn != entry->incarn) {
 980
 981                 /* when a vcc is closed, some PDUs may be still pending in the tx queue.
 982                    if the same vcc is immediately re-opened, those pending PDUs must
 983                    not be popped after the completion of their emission, as they refer
 984                    to the prior incarnation of that vcc. otherwise, sk_atm(vcc)->sk_wmem_alloc
 985                    would be decremented by the size of the (unrelated) skb, possibly
 986                    leading to a negative sk->sk_wmem_alloc count, ultimately freezing the vcc.
 987                    we thus bind the tx entry to the current incarnation of the vcc
 988                    when the entry is submitted for tx. When the tx later completes,
 989                    if the incarnation number of the tx entry does not match the one
 990                    of the vcc, then this implies that the vcc has been closed then re-opened.
 991                    we thus just drop the skb here. */
 992
 993                 DPRINTK(1, "vcc closed-then-re-opened; dropping PDU sent on device %d\n",
 994                         fore200e->atm_dev->number);
 995
 996                 dev_kfree_skb_any(entry->skb);
 997             }
 998             else {
 999                 vcc = vc_map->vcc;
1000                 ASSERT(vcc);
1001
1002                 /* notify tx completion */
1003                 if (vcc->pop) {
1004                     vcc->pop(vcc, entry->skb);
1005                 }
1006                 else {
1007                     dev_kfree_skb_any(entry->skb);
1008                 }
1009 #if 1
1010                 /* race fixed by the above incarnation mechanism, but... */
1011                 if (atomic_read(&sk_atm(vcc)->sk_wmem_alloc) < 0) {
1012                     atomic_set(&sk_atm(vcc)->sk_wmem_alloc, 0);
1013                 }
1014 #endif
1015                 /* check error condition */
1016                 if (*entry->status & STATUS_ERROR)
1017                     atomic_inc(&vcc->stats->tx_err);
1018                 else
1019                     atomic_inc(&vcc->stats->tx);
1020             }
1021         }
1022
1023         *entry->status = STATUS_FREE;
1024
1025         fore200e->host_txq.txing--;
1026
1027         FORE200E_NEXT_ENTRY(txq->tail, QUEUE_SIZE_TX);
1028     }
1029 }
1030
1031
1032 #ifdef FORE200E_BSQ_DEBUG
1033 int bsq_audit(int where, struct host_bsq* bsq, int scheme, int magn)
1034 {
1035     struct buffer* buffer;
1036     int count = 0;
1037
1038     buffer = bsq->freebuf;
1039     while (buffer) {
1040
1041         if (buffer->supplied) {
1042             printk(FORE200E "bsq_audit(%d): queue %d.%d, buffer %ld supplied but in free list!\n",
1043                    where, scheme, magn, buffer->index);
1044         }
1045
1046         if (buffer->magn != magn) {
1047             printk(FORE200E "bsq_audit(%d): queue %d.%d, buffer %ld, unexpected magn = %d\n",
1048                    where, scheme, magn, buffer->index, buffer->magn);
1049         }
1050
1051         if (buffer->scheme != scheme) {
1052             printk(FORE200E "bsq_audit(%d): queue %d.%d, buffer %ld, unexpected scheme = %d\n",
1053                    where, scheme, magn, buffer->index, buffer->scheme);
1054         }
1055
1056         if ((buffer->index < 0) || (buffer->index >= fore200e_rx_buf_nbr[ scheme ][ magn ])) {
1057             printk(FORE200E "bsq_audit(%d): queue %d.%d, out of range buffer index = %ld !\n",
1058                    where, scheme, magn, buffer->index);
1059         }
1060
1061         count++;
1062         buffer = buffer->next;
1063     }
1064
1065     if (count != bsq->freebuf_count) {
1066         printk(FORE200E "bsq_audit(%d): queue %d.%d, %d bufs in free list, but freebuf_count = %d\n",
1067                where, scheme, magn, count, bsq->freebuf_count);
1068     }
1069     return 0;
1070 }
1071 #endif
1072
1073
1074 static void
1075 fore200e_supply(struct fore200e* fore200e)
1076 {
1077     int  scheme, magn, i;
1078
1079     struct host_bsq*       bsq;
1080     struct host_bsq_entry* entry;
1081     struct buffer*         buffer;
1082
1083     for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) {
1084         for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) {
1085
1086             bsq = &fore200e->host_bsq[ scheme ][ magn ];
1087
1088 #ifdef FORE200E_BSQ_DEBUG
1089             bsq_audit(1, bsq, scheme, magn);
1090 #endif
1091             while (bsq->freebuf_count >= RBD_BLK_SIZE) {
1092
1093                 DPRINTK(2, "supplying %d rx buffers to queue %d / %d, freebuf_count = %d\n",
1094                         RBD_BLK_SIZE, scheme, magn, bsq->freebuf_count);
1095
1096                 entry = &bsq->host_entry[ bsq->head ];
1097
1098                 for (i = 0; i < RBD_BLK_SIZE; i++) {
1099
1100                     /* take the first buffer in the free buffer list */
1101                     buffer = bsq->freebuf;
1102                     if (!buffer) {
1103                         printk(FORE200E "no more free bufs in queue %d.%d, but freebuf_count = %d\n",
1104                                scheme, magn, bsq->freebuf_count);
1105                         return;
1106                     }
1107                     bsq->freebuf = buffer->next;
1108
1109 #ifdef FORE200E_BSQ_DEBUG
1110                     if (buffer->supplied)
1111                         printk(FORE200E "queue %d.%d, buffer %lu already supplied\n",
1112                                scheme, magn, buffer->index);
1113                     buffer->supplied = 1;
1114 #endif
1115                     entry->rbd_block->rbd[ i ].buffer_haddr = buffer->data.dma_addr;
1116                     entry->rbd_block->rbd[ i ].handle       = FORE200E_BUF2HDL(buffer);
1117                 }
1118
1119                 FORE200E_NEXT_ENTRY(bsq->head, QUEUE_SIZE_BS);
1120
1121                 /* decrease accordingly the number of free rx buffers */
1122                 bsq->freebuf_count -= RBD_BLK_SIZE;
1123
1124                 *entry->status = STATUS_PENDING;
1125                 fore200e->bus->write(entry->rbd_block_dma, &entry->cp_entry->rbd_block_haddr);
1126             }
1127         }
1128     }
1129 }
1130
1131
1132 static int
1133 fore200e_push_rpd(struct fore200e* fore200e, struct atm_vcc* vcc, struct rpd* rpd)
1134 {
1135     struct sk_buff*      skb;
1136     struct buffer*       buffer;
1137     struct fore200e_vcc* fore200e_vcc;
1138     int                  i, pdu_len = 0;
1139 #ifdef FORE200E_52BYTE_AAL0_SDU
1140     u32                  cell_header = 0;
1141 #endif
1142
1143     ASSERT(vcc);
1144
1145     fore200e_vcc = FORE200E_VCC(vcc);
1146     ASSERT(fore200e_vcc);
1147
1148 #ifdef FORE200E_52BYTE_AAL0_SDU
1149     if ((vcc->qos.aal == ATM_AAL0) && (vcc->qos.rxtp.max_sdu == ATM_AAL0_SDU)) {
1150
1151         cell_header = (rpd->atm_header.gfc << ATM_HDR_GFC_SHIFT) |
1152                       (rpd->atm_header.vpi << ATM_HDR_VPI_SHIFT) |
1153                       (rpd->atm_header.vci << ATM_HDR_VCI_SHIFT) |
1154                       (rpd->atm_header.plt << ATM_HDR_PTI_SHIFT) |
1155                        rpd->atm_header.clp;
1156         pdu_len = 4;
1157     }
1158 #endif
1159
1160     /* compute total PDU length */
1161     for (i = 0; i < rpd->nseg; i++)
1162         pdu_len += rpd->rsd[ i ].length;
1163
1164     skb = alloc_skb(pdu_len, GFP_ATOMIC);
1165     if (skb == NULL) {
1166         DPRINTK(2, "unable to alloc new skb, rx PDU length = %d\n", pdu_len);
1167
1168         atomic_inc(&vcc->stats->rx_drop);
1169         return -ENOMEM;
1170     }
1171
1172     __net_timestamp(skb);
1173
1174 #ifdef FORE200E_52BYTE_AAL0_SDU
1175     if (cell_header) {
1176         *((u32*)skb_put(skb, 4)) = cell_header;
1177     }
1178 #endif
1179
1180     /* reassemble segments */
1181     for (i = 0; i < rpd->nseg; i++) {
1182
1183         /* rebuild rx buffer address from rsd handle */
1184         buffer = FORE200E_HDL2BUF(rpd->rsd[ i ].handle);
1185
1186         /* Make device DMA transfer visible to CPU.  */
1187         fore200e->bus->dma_sync_for_cpu(fore200e, buffer->data.dma_addr, rpd->rsd[ i ].length, DMA_FROM_DEVICE);
1188
1189         memcpy(skb_put(skb, rpd->rsd[ i ].length), buffer->data.align_addr, rpd->rsd[ i ].length);
1190
1191         /* Now let the device get at it again.  */
1192         fore200e->bus->dma_sync_for_device(fore200e, buffer->data.dma_addr, rpd->rsd[ i ].length, DMA_FROM_DEVICE);
1193     }
1194
1195     DPRINTK(3, "rx skb: len = %d, truesize = %d\n", skb->len, skb->truesize);
1196
1197     if (pdu_len < fore200e_vcc->rx_min_pdu)
1198         fore200e_vcc->rx_min_pdu = pdu_len;
1199     if (pdu_len > fore200e_vcc->rx_max_pdu)
1200         fore200e_vcc->rx_max_pdu = pdu_len;
1201     fore200e_vcc->rx_pdu++;
1202
1203     /* push PDU */
1204     if (atm_charge(vcc, skb->truesize) == 0) {
1205
1206         DPRINTK(2, "receive buffers saturated for %d.%d.%d - PDU dropped\n",
1207                 vcc->itf, vcc->vpi, vcc->vci);
1208
1209         dev_kfree_skb_any(skb);
1210
1211         atomic_inc(&vcc->stats->rx_drop);
1212         return -ENOMEM;
1213     }
1214
1215     ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0);
1216
1217     vcc->push(vcc, skb);
1218     atomic_inc(&vcc->stats->rx);
1219
1220     ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0);
1221
1222     return 0;
1223 }
1224
1225
1226 static void
1227 fore200e_collect_rpd(struct fore200e* fore200e, struct rpd* rpd)
1228 {
1229     struct host_bsq* bsq;
1230     struct buffer*   buffer;
1231     int              i;
1232
1233     for (i = 0; i < rpd->nseg; i++) {
1234
1235         /* rebuild rx buffer address from rsd handle */
1236         buffer = FORE200E_HDL2BUF(rpd->rsd[ i ].handle);
1237
1238         bsq = &fore200e->host_bsq[ buffer->scheme ][ buffer->magn ];
1239
1240 #ifdef FORE200E_BSQ_DEBUG
1241         bsq_audit(2, bsq, buffer->scheme, buffer->magn);
1242
1243         if (buffer->supplied == 0)
1244             printk(FORE200E "queue %d.%d, buffer %ld was not supplied\n",
1245                    buffer->scheme, buffer->magn, buffer->index);
1246         buffer->supplied = 0;
1247 #endif
1248
1249         /* re-insert the buffer into the free buffer list */
1250         buffer->next = bsq->freebuf;
1251         bsq->freebuf = buffer;
1252
1253         /* then increment the number of free rx buffers */
1254         bsq->freebuf_count++;
1255     }
1256 }
1257
1258
1259 static void
1260 fore200e_rx_irq(struct fore200e* fore200e)
1261 {
1262     struct host_rxq*        rxq = &fore200e->host_rxq;
1263     struct host_rxq_entry*  entry;
1264     struct atm_vcc*         vcc;
1265     struct fore200e_vc_map* vc_map;
1266
1267     for (;;) {
1268
1269         entry = &rxq->host_entry[ rxq->head ];
1270
1271         /* no more received PDUs */
1272         if ((*entry->status & STATUS_COMPLETE) == 0)
1273             break;
1274
1275         vc_map = FORE200E_VC_MAP(fore200e, entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci);
1276
1277         if ((vc_map->vcc == NULL) ||
1278             (test_bit(ATM_VF_READY, &vc_map->vcc->flags) == 0)) {
1279
1280             DPRINTK(1, "no ready VC found for PDU received on %d.%d.%d\n",
1281                     fore200e->atm_dev->number,
1282                     entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci);
1283         }
1284         else {
1285             vcc = vc_map->vcc;
1286             ASSERT(vcc);
1287
1288             if ((*entry->status & STATUS_ERROR) == 0) {
1289
1290                 fore200e_push_rpd(fore200e, vcc, entry->rpd);
1291             }
1292             else {
1293                 DPRINTK(2, "damaged PDU on %d.%d.%d\n",
1294                         fore200e->atm_dev->number,
1295                         entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci);
1296                 atomic_inc(&vcc->stats->rx_err);
1297             }
1298         }
1299
1300         FORE200E_NEXT_ENTRY(rxq->head, QUEUE_SIZE_RX);
1301
1302         fore200e_collect_rpd(fore200e, entry->rpd);
1303
1304         /* rewrite the rpd address to ack the received PDU */
1305         fore200e->bus->write(entry->rpd_dma, &entry->cp_entry->rpd_haddr);
1306         *entry->status = STATUS_FREE;
1307
1308         fore200e_supply(fore200e);
1309     }
1310 }
1311
1312
1313 #ifndef FORE200E_USE_TASKLET
1314 static void
1315 fore200e_irq(struct fore200e* fore200e)
1316 {
1317     unsigned long flags;
1318
1319     spin_lock_irqsave(&fore200e->q_lock, flags);
1320     fore200e_rx_irq(fore200e);
1321     spin_unlock_irqrestore(&fore200e->q_lock, flags);
1322
1323     spin_lock_irqsave(&fore200e->q_lock, flags);
1324     fore200e_tx_irq(fore200e);
1325     spin_unlock_irqrestore(&fore200e->q_lock, flags);
1326 }
1327 #endif
1328
1329
1330 static irqreturn_t
1331 fore200e_interrupt(int irq, void* dev)
1332 {
1333     struct fore200e* fore200e = FORE200E_DEV((struct atm_dev*)dev);
1334
1335     if (fore200e->bus->irq_check(fore200e) == 0) {
1336
1337         DPRINTK(3, "interrupt NOT triggered by device %d\n", fore200e->atm_dev->number);
1338         return IRQ_NONE;
1339     }
1340     DPRINTK(3, "interrupt triggered by device %d\n", fore200e->atm_dev->number);
1341
1342 #ifdef FORE200E_USE_TASKLET
1343     tasklet_schedule(&fore200e->tx_tasklet);
1344     tasklet_schedule(&fore200e->rx_tasklet);
1345 #else
1346     fore200e_irq(fore200e);
1347 #endif
1348
1349     fore200e->bus->irq_ack(fore200e);
1350     return IRQ_HANDLED;
1351 }
1352
1353
1354 #ifdef FORE200E_USE_TASKLET
1355 static void
1356 fore200e_tx_tasklet(unsigned long data)
1357 {
1358     struct fore200e* fore200e = (struct fore200e*) data;
1359     unsigned long flags;
1360
1361     DPRINTK(3, "tx tasklet scheduled for device %d\n", fore200e->atm_dev->number);
1362
1363     spin_lock_irqsave(&fore200e->q_lock, flags);
1364     fore200e_tx_irq(fore200e);
1365     spin_unlock_irqrestore(&fore200e->q_lock, flags);
1366 }
1367
1368
1369 static void
1370 fore200e_rx_tasklet(unsigned long data)
1371 {
1372     struct fore200e* fore200e = (struct fore200e*) data;
1373     unsigned long    flags;
1374
1375     DPRINTK(3, "rx tasklet scheduled for device %d\n", fore200e->atm_dev->number);
1376
1377     spin_lock_irqsave(&fore200e->q_lock, flags);
1378     fore200e_rx_irq((struct fore200e*) data);
1379     spin_unlock_irqrestore(&fore200e->q_lock, flags);
1380 }
1381 #endif
1382
1383
1384 static int
1385 fore200e_select_scheme(struct atm_vcc* vcc)
1386 {
1387     /* fairly balance the VCs over (identical) buffer schemes */
1388     int scheme = vcc->vci % 2 ? BUFFER_SCHEME_ONE : BUFFER_SCHEME_TWO;
1389
1390     DPRINTK(1, "VC %d.%d.%d uses buffer scheme %d\n",
1391             vcc->itf, vcc->vpi, vcc->vci, scheme);
1392
1393     return scheme;
1394 }
1395
1396
1397 static int
1398 fore200e_activate_vcin(struct fore200e* fore200e, int activate, struct atm_vcc* vcc, int mtu)
1399 {
1400     struct host_cmdq*        cmdq  = &fore200e->host_cmdq;
1401     struct host_cmdq_entry*  entry = &cmdq->host_entry[ cmdq->head ];
1402     struct activate_opcode   activ_opcode;
1403     struct deactivate_opcode deactiv_opcode;
1404     struct vpvc              vpvc;
1405     int                      ok;
1406     enum fore200e_aal        aal = fore200e_atm2fore_aal(vcc->qos.aal);
1407
1408     FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD);
1409
1410     if (activate) {
1411         FORE200E_VCC(vcc)->scheme = fore200e_select_scheme(vcc);
1412
1413         activ_opcode.opcode = OPCODE_ACTIVATE_VCIN;
1414         activ_opcode.aal    = aal;
1415         activ_opcode.scheme = FORE200E_VCC(vcc)->scheme;
1416         activ_opcode.pad    = 0;
1417     }
1418     else {
1419         deactiv_opcode.opcode = OPCODE_DEACTIVATE_VCIN;
1420         deactiv_opcode.pad    = 0;
1421     }
1422
1423     vpvc.vci = vcc->vci;
1424     vpvc.vpi = vcc->vpi;
1425
1426     *entry->status = STATUS_PENDING;
1427
1428     if (activate) {
1429
1430 #ifdef FORE200E_52BYTE_AAL0_SDU
1431         mtu = 48;
1432 #endif
1433         /* the MTU is not used by the cp, except in the case of AAL0 */
1434         fore200e->bus->write(mtu,                        &entry->cp_entry->cmd.activate_block.mtu);
1435         fore200e->bus->write(*(u32*)&vpvc,         (u32 __iomem *)&entry->cp_entry->cmd.activate_block.vpvc);
1436         fore200e->bus->write(*(u32*)&activ_opcode, (u32 __iomem *)&entry->cp_entry->cmd.activate_block.opcode);
1437     }
1438     else {
1439         fore200e->bus->write(*(u32*)&vpvc,         (u32 __iomem *)&entry->cp_entry->cmd.deactivate_block.vpvc);
1440         fore200e->bus->write(*(u32*)&deactiv_opcode, (u32 __iomem *)&entry->cp_entry->cmd.deactivate_block.opcode);
1441     }
1442
1443     ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400);
1444
1445     *entry->status = STATUS_FREE;
1446
1447     if (ok == 0) {
1448         printk(FORE200E "unable to %s VC %d.%d.%d\n",
1449                activate ? "open" : "close", vcc->itf, vcc->vpi, vcc->vci);
1450         return -EIO;
1451     }
1452
1453     DPRINTK(1, "VC %d.%d.%d %sed\n", vcc->itf, vcc->vpi, vcc->vci,
1454             activate ? "open" : "clos");
1455
1456     return 0;
1457 }
1458
1459
1460 #define FORE200E_MAX_BACK2BACK_CELLS 255    /* XXX depends on CDVT */
1461
1462 static void
1463 fore200e_rate_ctrl(struct atm_qos* qos, struct tpd_rate* rate)
1464 {
1465     if (qos->txtp.max_pcr < ATM_OC3_PCR) {
1466
1467         /* compute the data cells to idle cells ratio from the tx PCR */
1468         rate->data_cells = qos->txtp.max_pcr * FORE200E_MAX_BACK2BACK_CELLS / ATM_OC3_PCR;
1469         rate->idle_cells = FORE200E_MAX_BACK2BACK_CELLS - rate->data_cells;
1470     }
1471     else {
1472         /* disable rate control */
1473         rate->data_cells = rate->idle_cells = 0;
1474     }
1475 }
1476
1477
1478 static int
1479 fore200e_open(struct atm_vcc *vcc)
1480 {
1481     struct fore200e*        fore200e = FORE200E_DEV(vcc->dev);
1482     struct fore200e_vcc*    fore200e_vcc;
1483     struct fore200e_vc_map* vc_map;
1484     unsigned long           flags;
1485     int                     vci = vcc->vci;
1486     short                   vpi = vcc->vpi;
1487
1488     ASSERT((vpi >= 0) && (vpi < 1<<FORE200E_VPI_BITS));
1489     ASSERT((vci >= 0) && (vci < 1<<FORE200E_VCI_BITS));
1490
1491     spin_lock_irqsave(&fore200e->q_lock, flags);
1492
1493     vc_map = FORE200E_VC_MAP(fore200e, vpi, vci);
1494     if (vc_map->vcc) {
1495
1496         spin_unlock_irqrestore(&fore200e->q_lock, flags);
1497
1498         printk(FORE200E "VC %d.%d.%d already in use\n",
1499                fore200e->atm_dev->number, vpi, vci);
1500
1501         return -EINVAL;
1502     }
1503
1504     vc_map->vcc = vcc;
1505
1506     spin_unlock_irqrestore(&fore200e->q_lock, flags);
1507
1508     fore200e_vcc = fore200e_kmalloc(sizeof(struct fore200e_vcc), GFP_ATOMIC);
1509     if (fore200e_vcc == NULL) {
1510         vc_map->vcc = NULL;
1511         return -ENOMEM;
1512     }
1513
1514     DPRINTK(2, "opening %d.%d.%d:%d QoS = (tx: cl=%s, pcr=%d-%d, cdv=%d, max_sdu=%d; "
1515             "rx: cl=%s, pcr=%d-%d, cdv=%d, max_sdu=%d)\n",
1516             vcc->itf, vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal),
1517             fore200e_traffic_class[ vcc->qos.txtp.traffic_class ],
1518             vcc->qos.txtp.min_pcr, vcc->qos.txtp.max_pcr, vcc->qos.txtp.max_cdv, vcc->qos.txtp.max_sdu,
1519             fore200e_traffic_class[ vcc->qos.rxtp.traffic_class ],
1520             vcc->qos.rxtp.min_pcr, vcc->qos.rxtp.max_pcr, vcc->qos.rxtp.max_cdv, vcc->qos.rxtp.max_sdu);
1521
1522     /* pseudo-CBR bandwidth requested? */
1523     if ((vcc->qos.txtp.traffic_class == ATM_CBR) && (vcc->qos.txtp.max_pcr > 0)) {
1524
1525         down(&fore200e->rate_sf);
1526         if (fore200e->available_cell_rate < vcc->qos.txtp.max_pcr) {
1527             up(&fore200e->rate_sf);
1528
1529             fore200e_kfree(fore200e_vcc);
1530             vc_map->vcc = NULL;
1531             return -EAGAIN;
1532         }
1533
1534         /* reserve bandwidth */
1535         fore200e->available_cell_rate -= vcc->qos.txtp.max_pcr;
1536         up(&fore200e->rate_sf);
1537     }
1538
1539     vcc->itf = vcc->dev->number;
1540
1541     set_bit(ATM_VF_PARTIAL,&vcc->flags);
1542     set_bit(ATM_VF_ADDR, &vcc->flags);
1543
1544     vcc->dev_data = fore200e_vcc;
1545
1546     if (fore200e_activate_vcin(fore200e, 1, vcc, vcc->qos.rxtp.max_sdu) < 0) {
1547
1548         vc_map->vcc = NULL;
1549
1550         clear_bit(ATM_VF_ADDR, &vcc->flags);
1551         clear_bit(ATM_VF_PARTIAL,&vcc->flags);
1552
1553         vcc->dev_data = NULL;
1554
1555         fore200e->available_cell_rate += vcc->qos.txtp.max_pcr;
1556
1557         fore200e_kfree(fore200e_vcc);
1558         return -EINVAL;
1559     }
1560
1561     /* compute rate control parameters */
1562     if ((vcc->qos.txtp.traffic_class == ATM_CBR) && (vcc->qos.txtp.max_pcr > 0)) {
1563
1564         fore200e_rate_ctrl(&vcc->qos, &fore200e_vcc->rate);
1565         set_bit(ATM_VF_HASQOS, &vcc->flags);
1566
1567         DPRINTK(3, "tx on %d.%d.%d:%d, tx PCR = %d, rx PCR = %d, data_cells = %u, idle_cells = %u\n",
1568                 vcc->itf, vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal),
1569                 vcc->qos.txtp.max_pcr, vcc->qos.rxtp.max_pcr,
1570                 fore200e_vcc->rate.data_cells, fore200e_vcc->rate.idle_cells);
1571     }
1572
1573     fore200e_vcc->tx_min_pdu = fore200e_vcc->rx_min_pdu = MAX_PDU_SIZE + 1;
1574     fore200e_vcc->tx_max_pdu = fore200e_vcc->rx_max_pdu = 0;
1575     fore200e_vcc->tx_pdu     = fore200e_vcc->rx_pdu     = 0;
1576
1577     /* new incarnation of the vcc */
1578     vc_map->incarn = ++fore200e->incarn_count;
1579
1580     /* VC unusable before this flag is set */
1581     set_bit(ATM_VF_READY, &vcc->flags);
1582
1583     return 0;
1584 }
1585
1586
1587 static void
1588 fore200e_close(struct atm_vcc* vcc)
1589 {
1590     struct fore200e*        fore200e = FORE200E_DEV(vcc->dev);
1591     struct fore200e_vcc*    fore200e_vcc;
1592     struct fore200e_vc_map* vc_map;
1593     unsigned long           flags;
1594
1595     ASSERT(vcc);
1596     ASSERT((vcc->vpi >= 0) && (vcc->vpi < 1<<FORE200E_VPI_BITS));
1597     ASSERT((vcc->vci >= 0) && (vcc->vci < 1<<FORE200E_VCI_BITS));
1598
1599     DPRINTK(2, "closing %d.%d.%d:%d\n", vcc->itf, vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal));
1600
1601     clear_bit(ATM_VF_READY, &vcc->flags);
1602
1603     fore200e_activate_vcin(fore200e, 0, vcc, 0);
1604
1605     spin_lock_irqsave(&fore200e->q_lock, flags);
1606
1607     vc_map = FORE200E_VC_MAP(fore200e, vcc->vpi, vcc->vci);
1608
1609     /* the vc is no longer considered as "in use" by fore200e_open() */
1610     vc_map->vcc = NULL;
1611
1612     vcc->itf = vcc->vci = vcc->vpi = 0;
1613
1614     fore200e_vcc = FORE200E_VCC(vcc);
1615     vcc->dev_data = NULL;
1616
1617     spin_unlock_irqrestore(&fore200e->q_lock, flags);
1618
1619     /* release reserved bandwidth, if any */
1620     if ((vcc->qos.txtp.traffic_class == ATM_CBR) && (vcc->qos.txtp.max_pcr > 0)) {
1621
1622         down(&fore200e->rate_sf);
1623         fore200e->available_cell_rate += vcc->qos.txtp.max_pcr;
1624         up(&fore200e->rate_sf);
1625
1626         clear_bit(ATM_VF_HASQOS, &vcc->flags);
1627     }
1628
1629     clear_bit(ATM_VF_ADDR, &vcc->flags);
1630     clear_bit(ATM_VF_PARTIAL,&vcc->flags);
1631
1632     ASSERT(fore200e_vcc);
1633     fore200e_kfree(fore200e_vcc);
1634 }
1635
1636
1637 static int
1638 fore200e_send(struct atm_vcc *vcc, struct sk_buff *skb)
1639 {
1640     struct fore200e*        fore200e     = FORE200E_DEV(vcc->dev);
1641     struct fore200e_vcc*    fore200e_vcc = FORE200E_VCC(vcc);
1642     struct fore200e_vc_map* vc_map;
1643     struct host_txq*        txq          = &fore200e->host_txq;
1644     struct host_txq_entry*  entry;
1645     struct tpd*             tpd;
1646     struct tpd_haddr        tpd_haddr;
1647     int                     retry        = CONFIG_ATM_FORE200E_TX_RETRY;
1648     int                     tx_copy      = 0;
1649     int                     tx_len       = skb->len;
1650     u32*                    cell_header  = NULL;
1651     unsigned char*          skb_data;
1652     int                     skb_len;
1653     unsigned char*          data;
1654     unsigned long           flags;
1655
1656     ASSERT(vcc);
1657     ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0);
1658     ASSERT(fore200e);
1659     ASSERT(fore200e_vcc);
1660
1661     if (!test_bit(ATM_VF_READY, &vcc->flags)) {
1662         DPRINTK(1, "VC %d.%d.%d not ready for tx\n", vcc->itf, vcc->vpi, vcc->vpi);
1663         dev_kfree_skb_any(skb);
1664         return -EINVAL;
1665     }
1666
1667 #ifdef FORE200E_52BYTE_AAL0_SDU
1668     if ((vcc->qos.aal == ATM_AAL0) && (vcc->qos.txtp.max_sdu == ATM_AAL0_SDU)) {
1669         cell_header = (u32*) skb->data;
1670         skb_data    = skb->data + 4;    /* skip 4-byte cell header */
1671         skb_len     = tx_len = skb->len  - 4;
1672
1673         DPRINTK(3, "user-supplied cell header = 0x%08x\n", *cell_header);
1674     }
1675     else
1676 #endif
1677     {
1678         skb_data = skb->data;
1679         skb_len  = skb->len;
1680     }
1681
1682     if (((unsigned long)skb_data) & 0x3) {
1683
1684         DPRINTK(2, "misaligned tx PDU on device %s\n", fore200e->name);
1685         tx_copy = 1;
1686         tx_len  = skb_len;
1687     }
1688
1689     if ((vcc->qos.aal == ATM_AAL0) && (skb_len % ATM_CELL_PAYLOAD)) {
1690
1691         /* this simply NUKES the PCA board */
1692         DPRINTK(2, "incomplete tx AAL0 PDU on device %s\n", fore200e->name);
1693         tx_copy = 1;
1694         tx_len  = ((skb_len / ATM_CELL_PAYLOAD) + 1) * ATM_CELL_PAYLOAD;
1695     }
1696
1697     if (tx_copy) {
1698         data = kmalloc(tx_len, GFP_ATOMIC | GFP_DMA);
1699         if (data == NULL) {
1700             if (vcc->pop) {
1701                 vcc->pop(vcc, skb);
1702             }
1703             else {
1704                 dev_kfree_skb_any(skb);
1705             }
1706             return -ENOMEM;
1707         }
1708
1709         memcpy(data, skb_data, skb_len);
1710         if (skb_len < tx_len)
1711             memset(data + skb_len, 0x00, tx_len - skb_len);
1712     }
1713     else {
1714         data = skb_data;
1715     }
1716
1717     vc_map = FORE200E_VC_MAP(fore200e, vcc->vpi, vcc->vci);
1718     ASSERT(vc_map->vcc == vcc);
1719
1720   retry_here:
1721
1722     spin_lock_irqsave(&fore200e->q_lock, flags);
1723
1724     entry = &txq->host_entry[ txq->head ];
1725
1726     if ((*entry->status != STATUS_FREE) || (txq->txing >= QUEUE_SIZE_TX - 2)) {
1727
1728         /* try to free completed tx queue entries */
1729         fore200e_tx_irq(fore200e);
1730
1731         if (*entry->status != STATUS_FREE) {
1732
1733             spin_unlock_irqrestore(&fore200e->q_lock, flags);
1734
1735             /* retry once again? */
1736             if (--retry > 0) {
1737                 udelay(50);
1738                 goto retry_here;
1739             }
1740
1741             atomic_inc(&vcc->stats->tx_err);
1742
1743             fore200e->tx_sat++;
1744             DPRINTK(2, "tx queue of device %s is saturated, PDU dropped - heartbeat is %08x\n",
1745                     fore200e->name, fore200e->cp_queues->heartbeat);
1746             if (vcc->pop) {
1747                 vcc->pop(vcc, skb);
1748             }
1749             else {
1750                 dev_kfree_skb_any(skb);
1751             }
1752
1753             if (tx_copy)
1754                 kfree(data);
1755
1756             return -ENOBUFS;
1757         }
1758     }
1759
1760     entry->incarn = vc_map->incarn;
1761     entry->vc_map = vc_map;
1762     entry->skb    = skb;
1763     entry->data   = tx_copy ? data : NULL;
1764
1765     tpd = entry->tpd;
1766     tpd->tsd[ 0 ].buffer = fore200e->bus->dma_map(fore200e, data, tx_len, DMA_TO_DEVICE);
1767     tpd->tsd[ 0 ].length = tx_len;
1768
1769     FORE200E_NEXT_ENTRY(txq->head, QUEUE_SIZE_TX);
1770     txq->txing++;
1771
1772     /* The dma_map call above implies a dma_sync so the device can use it,
1773      * thus no explicit dma_sync call is necessary here.
1774      */
1775
1776     DPRINTK(3, "tx on %d.%d.%d:%d, len = %u (%u)\n",
1777             vcc->itf, vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal),
1778             tpd->tsd[0].length, skb_len);
1779
1780     if (skb_len < fore200e_vcc->tx_min_pdu)
1781         fore200e_vcc->tx_min_pdu = skb_len;
1782     if (skb_len > fore200e_vcc->tx_max_pdu)
1783         fore200e_vcc->tx_max_pdu = skb_len;
1784     fore200e_vcc->tx_pdu++;
1785
1786     /* set tx rate control information */
1787     tpd->rate.data_cells = fore200e_vcc->rate.data_cells;
1788     tpd->rate.idle_cells = fore200e_vcc->rate.idle_cells;
1789
1790     if (cell_header) {
1791         tpd->atm_header.clp = (*cell_header & ATM_HDR_CLP);
1792         tpd->atm_header.plt = (*cell_header & ATM_HDR_PTI_MASK) >> ATM_HDR_PTI_SHIFT;
1793         tpd->atm_header.vci = (*cell_header & ATM_HDR_VCI_MASK) >> ATM_HDR_VCI_SHIFT;
1794         tpd->atm_header.vpi = (*cell_header & ATM_HDR_VPI_MASK) >> ATM_HDR_VPI_SHIFT;
1795         tpd->atm_header.gfc = (*cell_header & ATM_HDR_GFC_MASK) >> ATM_HDR_GFC_SHIFT;
1796     }
1797     else {
1798         /* set the ATM header, common to all cells conveying the PDU */
1799         tpd->atm_header.clp = 0;
1800         tpd->atm_header.plt = 0;
1801         tpd->atm_header.vci = vcc->vci;
1802         tpd->atm_header.vpi = vcc->vpi;
1803         tpd->atm_header.gfc = 0;
1804     }
1805
1806     tpd->spec.length = tx_len;
1807     tpd->spec.nseg   = 1;
1808     tpd->spec.aal    = fore200e_atm2fore_aal(vcc->qos.aal);
1809     tpd->spec.intr   = 1;
1810
1811     tpd_haddr.size  = sizeof(struct tpd) / (1<<TPD_HADDR_SHIFT);  /* size is expressed in 32 byte blocks */
1812     tpd_haddr.pad   = 0;
1813     tpd_haddr.haddr = entry->tpd_dma >> TPD_HADDR_SHIFT;          /* shift the address, as we are in a bitfield */
1814
1815     *entry->status = STATUS_PENDING;
1816     fore200e->bus->write(*(u32*)&tpd_haddr, (u32 __iomem *)&entry->cp_entry->tpd_haddr);
1817
1818     spin_unlock_irqrestore(&fore200e->q_lock, flags);
1819
1820     return 0;
1821 }
1822
1823
1824 static int
1825 fore200e_getstats(struct fore200e* fore200e)
1826 {
1827     struct host_cmdq*       cmdq  = &fore200e->host_cmdq;
1828     struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ];
1829     struct stats_opcode     opcode;
1830     int                     ok;
1831     u32                     stats_dma_addr;
1832
1833     if (fore200e->stats == NULL) {
1834         fore200e->stats = fore200e_kmalloc(sizeof(struct stats), GFP_KERNEL | GFP_DMA);
1835         if (fore200e->stats == NULL)
1836             return -ENOMEM;
1837     }
1838
1839     stats_dma_addr = fore200e->bus->dma_map(fore200e, fore200e->stats,
1840                                             sizeof(struct stats), DMA_FROM_DEVICE);
1841
1842     FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD);
1843
1844     opcode.opcode = OPCODE_GET_STATS;
1845     opcode.pad    = 0;
1846
1847     fore200e->bus->write(stats_dma_addr, &entry->cp_entry->cmd.stats_block.stats_haddr);
1848
1849     *entry->status = STATUS_PENDING;
1850
1851     fore200e->bus->write(*(u32*)&opcode, (u32 __iomem *)&entry->cp_entry->cmd.stats_block.opcode);
1852
1853     ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400);
1854
1855     *entry->status = STATUS_FREE;
1856
1857     fore200e->bus->dma_unmap(fore200e, stats_dma_addr, sizeof(struct stats), DMA_FROM_DEVICE);
1858
1859     if (ok == 0) {
1860         printk(FORE200E "unable to get statistics from device %s\n", fore200e->name);
1861         return -EIO;
1862     }
1863
1864     return 0;
1865 }
1866
1867
1868 static int
1869 fore200e_getsockopt(struct atm_vcc* vcc, int level, int optname, void __user *optval, int optlen)
1870 {
1871     /* struct fore200e* fore200e = FORE200E_DEV(vcc->dev); */
1872
1873     DPRINTK(2, "getsockopt %d.%d.%d, level = %d, optname = 0x%x, optval = 0x%p, optlen = %d\n",
1874             vcc->itf, vcc->vpi, vcc->vci, level, optname, optval, optlen);
1875
1876     return -EINVAL;
1877 }
1878
1879
1880 static int
1881 fore200e_setsockopt(struct atm_vcc* vcc, int level, int optname, void __user *optval, int optlen)
1882 {
1883     /* struct fore200e* fore200e = FORE200E_DEV(vcc->dev); */
1884
1885     DPRINTK(2, "setsockopt %d.%d.%d, level = %d, optname = 0x%x, optval = 0x%p, optlen = %d\n",
1886             vcc->itf, vcc->vpi, vcc->vci, level, optname, optval, optlen);
1887
1888     return -EINVAL;
1889 }
1890
1891
1892 #if 0 /* currently unused */
1893 static int
1894 fore200e_get_oc3(struct fore200e* fore200e, struct oc3_regs* regs)
1895 {
1896     struct host_cmdq*       cmdq  = &fore200e->host_cmdq;
1897     struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ];
1898     struct oc3_opcode       opcode;
1899     int                     ok;
1900     u32                     oc3_regs_dma_addr;
1901
1902     oc3_regs_dma_addr = fore200e->bus->dma_map(fore200e, regs, sizeof(struct oc3_regs), DMA_FROM_DEVICE);
1903
1904     FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD);
1905
1906     opcode.opcode = OPCODE_GET_OC3;
1907     opcode.reg    = 0;
1908     opcode.value  = 0;
1909     opcode.mask   = 0;
1910
1911     fore200e->bus->write(oc3_regs_dma_addr, &entry->cp_entry->cmd.oc3_block.regs_haddr);
1912
1913     *entry->status = STATUS_PENDING;
1914
1915     fore200e->bus->write(*(u32*)&opcode, (u32*)&entry->cp_entry->cmd.oc3_block.opcode);
1916
1917     ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400);
1918
1919     *entry->status = STATUS_FREE;
1920
1921     fore200e->bus->dma_unmap(fore200e, oc3_regs_dma_addr, sizeof(struct oc3_regs), DMA_FROM_DEVICE);
1922
1923     if (ok == 0) {
1924         printk(FORE200E "unable to get OC-3 regs of device %s\n", fore200e->name);
1925         return -EIO;
1926     }
1927
1928     return 0;
1929 }
1930 #endif
1931
1932
1933 static int
1934 fore200e_set_oc3(struct fore200e* fore200e, u32 reg, u32 value, u32 mask)
1935 {
1936     struct host_cmdq*       cmdq  = &fore200e->host_cmdq;
1937     struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ];
1938     struct oc3_opcode       opcode;
1939     int                     ok;
1940
1941     DPRINTK(2, "set OC-3 reg = 0x%02x, value = 0x%02x, mask = 0x%02x\n", reg, value, mask);
1942
1943     FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD);
1944
1945     opcode.opcode = OPCODE_SET_OC3;
1946     opcode.reg    = reg;
1947     opcode.value  = value;
1948     opcode.mask   = mask;
1949
1950     fore200e->bus->write(0, &entry->cp_entry->cmd.oc3_block.regs_haddr);
1951
1952     *entry->status = STATUS_PENDING;
1953
1954     fore200e->bus->write(*(u32*)&opcode, (u32 __iomem *)&entry->cp_entry->cmd.oc3_block.opcode);
1955
1956     ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400);
1957
1958     *entry->status = STATUS_FREE;
1959
1960     if (ok == 0) {
1961         printk(FORE200E "unable to set OC-3 reg 0x%02x of device %s\n", reg, fore200e->name);
1962         return -EIO;
1963     }
1964
1965     return 0;
1966 }
1967
1968
1969 static int
1970 fore200e_setloop(struct fore200e* fore200e, int loop_mode)
1971 {
1972     u32 mct_value, mct_mask;
1973     int error;
1974
1975     if (!capable(CAP_NET_ADMIN))
1976         return -EPERM;
1977
1978     switch (loop_mode) {
1979
1980     case ATM_LM_NONE:
1981         mct_value = 0;
1982         mct_mask  = SUNI_MCT_DLE | SUNI_MCT_LLE;
1983         break;
1984
1985     case ATM_LM_LOC_PHY:
1986         mct_value = mct_mask = SUNI_MCT_DLE;
1987         break;
1988
1989     case ATM_LM_RMT_PHY:
1990         mct_value = mct_mask = SUNI_MCT_LLE;
1991         break;
1992
1993     default:
1994         return -EINVAL;
1995     }
1996
1997     error = fore200e_set_oc3(fore200e, SUNI_MCT, mct_value, mct_mask);
1998     if (error == 0)
1999         fore200e->loop_mode = loop_mode;
2000
2001     return error;
2002 }
2003
2004
2005 static inline unsigned int
2006 fore200e_swap(unsigned int in)
2007 {
2008 #if defined(__LITTLE_ENDIAN)
2009     return swab32(in);
2010 #else
2011     return in;
2012 #endif
2013 }
2014
2015
2016 static int
2017 fore200e_fetch_stats(struct fore200e* fore200e, struct sonet_stats __user *arg)
2018 {
2019     struct sonet_stats tmp;
2020
2021     if (fore200e_getstats(fore200e) < 0)
2022         return -EIO;
2023
2024     tmp.section_bip = fore200e_swap(fore200e->stats->oc3.section_bip8_errors);
2025     tmp.line_bip    = fore200e_swap(fore200e->stats->oc3.line_bip24_errors);
2026     tmp.path_bip    = fore200e_swap(fore200e->stats->oc3.path_bip8_errors);
2027     tmp.line_febe   = fore200e_swap(fore200e->stats->oc3.line_febe_errors);
2028     tmp.path_febe   = fore200e_swap(fore200e->stats->oc3.path_febe_errors);
2029     tmp.corr_hcs    = fore200e_swap(fore200e->stats->oc3.corr_hcs_errors);
2030     tmp.uncorr_hcs  = fore200e_swap(fore200e->stats->oc3.ucorr_hcs_errors);
2031     tmp.tx_cells    = fore200e_swap(fore200e->stats->aal0.cells_transmitted)  +
2032                       fore200e_swap(fore200e->stats->aal34.cells_transmitted) +
2033                       fore200e_swap(fore200e->stats->aal5.cells_transmitted);
2034     tmp.rx_cells    = fore200e_swap(fore200e->stats->aal0.cells_received)     +
2035                       fore200e_swap(fore200e->stats->aal34.cells_received)    +
2036                       fore200e_swap(fore200e->stats->aal5.cells_received);
2037
2038     if (arg)
2039         return copy_to_user(arg, &tmp, sizeof(struct sonet_stats)) ? -EFAULT : 0;
2040
2041     return 0;
2042 }
2043
2044
2045 static int
2046 fore200e_ioctl(struct atm_dev* dev, unsigned int cmd, void __user * arg)
2047 {
2048     struct fore200e* fore200e = FORE200E_DEV(dev);
2049
2050     DPRINTK(2, "ioctl cmd = 0x%x (%u), arg = 0x%p (%lu)\n", cmd, cmd, arg, (unsigned long)arg);
2051
2052     switch (cmd) {
2053
2054     case SONET_GETSTAT:
2055         return fore200e_fetch_stats(fore200e, (struct sonet_stats __user *)arg);
2056
2057     case SONET_GETDIAG:
2058         return put_user(0, (int __user *)arg) ? -EFAULT : 0;
2059
2060     case ATM_SETLOOP:
2061         return fore200e_setloop(fore200e, (int)(unsigned long)arg);
2062
2063     case ATM_GETLOOP:
2064         return put_user(fore200e->loop_mode, (int __user *)arg) ? -EFAULT : 0;
2065
2066     case ATM_QUERYLOOP:
2067         return put_user(ATM_LM_LOC_PHY | ATM_LM_RMT_PHY, (int __user *)arg) ? -EFAULT : 0;
2068     }
2069
2070     return -ENOSYS; /* not implemented */
2071 }
2072
2073
2074 static int
2075 fore200e_change_qos(struct atm_vcc* vcc,struct atm_qos* qos, int flags)
2076 {
2077     struct fore200e_vcc* fore200e_vcc = FORE200E_VCC(vcc);
2078     struct fore200e*     fore200e     = FORE200E_DEV(vcc->dev);
2079
2080     if (!test_bit(ATM_VF_READY, &vcc->flags)) {
2081         DPRINTK(1, "VC %d.%d.%d not ready for QoS change\n", vcc->itf, vcc->vpi, vcc->vpi);
2082         return -EINVAL;
2083     }
2084
2085     DPRINTK(2, "change_qos %d.%d.%d, "
2086             "(tx: cl=%s, pcr=%d-%d, cdv=%d, max_sdu=%d; "
2087             "rx: cl=%s, pcr=%d-%d, cdv=%d, max_sdu=%d), flags = 0x%x\n"
2088             "available_cell_rate = %u",
2089             vcc->itf, vcc->vpi, vcc->vci,
2090             fore200e_traffic_class[ qos->txtp.traffic_class ],
2091             qos->txtp.min_pcr, qos->txtp.max_pcr, qos->txtp.max_cdv, qos->txtp.max_sdu,
2092             fore200e_traffic_class[ qos->rxtp.traffic_class ],
2093             qos->rxtp.min_pcr, qos->rxtp.max_pcr, qos->rxtp.max_cdv, qos->rxtp.max_sdu,
2094             flags, fore200e->available_cell_rate);
2095
2096     if ((qos->txtp.traffic_class == ATM_CBR) && (qos->txtp.max_pcr > 0)) {
2097
2098         down(&fore200e->rate_sf);
2099         if (fore200e->available_cell_rate + vcc->qos.txtp.max_pcr < qos->txtp.max_pcr) {
2100             up(&fore200e->rate_sf);
2101             return -EAGAIN;
2102         }
2103
2104         fore200e->available_cell_rate += vcc->qos.txtp.max_pcr;
2105         fore200e->available_cell_rate -= qos->txtp.max_pcr;
2106
2107         up(&fore200e->rate_sf);
2108
2109         memcpy(&vcc->qos, qos, sizeof(struct atm_qos));
2110
2111         /* update rate control parameters */
2112         fore200e_rate_ctrl(qos, &fore200e_vcc->rate);
2113
2114         set_bit(ATM_VF_HASQOS, &vcc->flags);
2115
2116         return 0;
2117     }
2118
2119     return -EINVAL;
2120 }
2121
2122
2123 static int __devinit
2124 fore200e_irq_request(struct fore200e* fore200e)
2125 {
2126     if (request_irq(fore200e->irq, fore200e_interrupt, IRQF_SHARED, fore200e->name, fore200e->atm_dev) < 0) {
2127
2128         printk(FORE200E "unable to reserve IRQ %s for device %s\n",
2129                fore200e_irq_itoa(fore200e->irq), fore200e->name);
2130         return -EBUSY;
2131     }
2132
2133     printk(FORE200E "IRQ %s reserved for device %s\n",
2134            fore200e_irq_itoa(fore200e->irq), fore200e->name);
2135
2136 #ifdef FORE200E_USE_TASKLET
2137     tasklet_init(&fore200e->tx_tasklet, fore200e_tx_tasklet, (unsigned long)fore200e);
2138     tasklet_init(&fore200e->rx_tasklet, fore200e_rx_tasklet, (unsigned long)fore200e);
2139 #endif
2140
2141     fore200e->state = FORE200E_STATE_IRQ;
2142     return 0;
2143 }
2144
2145
2146 static int __devinit
2147 fore200e_get_esi(struct fore200e* fore200e)
2148 {
2149     struct prom_data* prom = fore200e_kmalloc(sizeof(struct prom_data), GFP_KERNEL | GFP_DMA);
2150     int ok, i;
2151
2152     if (!prom)
2153         return -ENOMEM;
2154
2155     ok = fore200e->bus->prom_read(fore200e, prom);
2156     if (ok < 0) {
2157         fore200e_kfree(prom);
2158         return -EBUSY;
2159     }
2160
2161     printk(FORE200E "device %s, rev. %c, S/N: %d, ESI: %02x:%02x:%02x:%02x:%02x:%02x\n",
2162            fore200e->name,
2163            (prom->hw_revision & 0xFF) + '@',    /* probably meaningless with SBA boards */
2164            prom->serial_number & 0xFFFF,
2165            prom->mac_addr[ 2 ], prom->mac_addr[ 3 ], prom->mac_addr[ 4 ],
2166            prom->mac_addr[ 5 ], prom->mac_addr[ 6 ], prom->mac_addr[ 7 ]);
2167
2168     for (i = 0; i < ESI_LEN; i++) {
2169         fore200e->esi[ i ] = fore200e->atm_dev->esi[ i ] = prom->mac_addr[ i + 2 ];
2170     }
2171
2172     fore200e_kfree(prom);
2173
2174     return 0;
2175 }
2176
2177
2178 static int __devinit
2179 fore200e_alloc_rx_buf(struct fore200e* fore200e)
2180 {
2181     int scheme, magn, nbr, size, i;
2182
2183     struct host_bsq* bsq;
2184     struct buffer*   buffer;
2185
2186     for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) {
2187         for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) {
2188
2189             bsq = &fore200e->host_bsq[ scheme ][ magn ];
2190
2191             nbr  = fore200e_rx_buf_nbr[ scheme ][ magn ];
2192             size = fore200e_rx_buf_size[ scheme ][ magn ];
2193
2194             DPRINTK(2, "rx buffers %d / %d are being allocated\n", scheme, magn);
2195
2196             /* allocate the array of receive buffers */
2197             buffer = bsq->buffer = fore200e_kmalloc(nbr * sizeof(struct buffer), GFP_KERNEL);
2198
2199             if (buffer == NULL)
2200                 return -ENOMEM;
2201
2202             bsq->freebuf = NULL;
2203
2204             for (i = 0; i < nbr; i++) {
2205
2206                 buffer[ i ].scheme = scheme;
2207                 buffer[ i ].magn   = magn;
2208 #ifdef FORE200E_BSQ_DEBUG
2209                 buffer[ i ].index  = i;
2210                 buffer[ i ].supplied = 0;
2211 #endif
2212
2213                 /* allocate the receive buffer body */
2214                 if (fore200e_chunk_alloc(fore200e,
2215                                          &buffer[ i ].data, size, fore200e->bus->buffer_alignment,
2216                                          DMA_FROM_DEVICE) < 0) {
2217
2218                     while (i > 0)
2219                         fore200e_chunk_free(fore200e, &buffer[ --i ].data);
2220                     fore200e_kfree(buffer);
2221
2222                     return -ENOMEM;
2223                 }
2224
2225                 /* insert the buffer into the free buffer list */
2226                 buffer[ i ].next = bsq->freebuf;
2227                 bsq->freebuf = &buffer[ i ];
2228             }
2229             /* all the buffers are free, initially */
2230             bsq->freebuf_count = nbr;
2231
2232 #ifdef FORE200E_BSQ_DEBUG
2233             bsq_audit(3, bsq, scheme, magn);
2234 #endif
2235         }
2236     }
2237
2238     fore200e->state = FORE200E_STATE_ALLOC_BUF;
2239     return 0;
2240 }
2241
2242
2243 static int __devinit
2244 fore200e_init_bs_queue(struct fore200e* fore200e)
2245 {
2246     int scheme, magn, i;
2247
2248     struct host_bsq*     bsq;
2249     struct cp_bsq_entry __iomem * cp_entry;
2250
2251     for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) {
2252         for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) {
2253
2254             DPRINTK(2, "buffer supply queue %d / %d is being initialized\n", scheme, magn);
2255
2256             bsq = &fore200e->host_bsq[ scheme ][ magn ];
2257
2258             /* allocate and align the array of status words */
2259             if (fore200e->bus->dma_chunk_alloc(fore200e,
2260                                                &bsq->status,
2261                                                sizeof(enum status),
2262                                                QUEUE_SIZE_BS,
2263                                                fore200e->bus->status_alignment) < 0) {
2264                 return -ENOMEM;
2265             }
2266
2267             /* allocate and align the array of receive buffer descriptors */
2268             if (fore200e->bus->dma_chunk_alloc(fore200e,
2269                                                &bsq->rbd_block,
2270                                                sizeof(struct rbd_block),
2271                                                QUEUE_SIZE_BS,
2272                                                fore200e->bus->descr_alignment) < 0) {
2273
2274                 fore200e->bus->dma_chunk_free(fore200e, &bsq->status);
2275                 return -ENOMEM;
2276             }
2277
2278             /* get the base address of the cp resident buffer supply queue entries */
2279             cp_entry = fore200e->virt_base +
2280                        fore200e->bus->read(&fore200e->cp_queues->cp_bsq[ scheme ][ magn ]);
2281
2282             /* fill the host resident and cp resident buffer supply queue entries */
2283             for (i = 0; i < QUEUE_SIZE_BS; i++) {
2284
2285                 bsq->host_entry[ i ].status =
2286                                      FORE200E_INDEX(bsq->status.align_addr, enum status, i);
2287                 bsq->host_entry[ i ].rbd_block =
2288                                      FORE200E_INDEX(bsq->rbd_block.align_addr, struct rbd_block, i);
2289                 bsq->host_entry[ i ].rbd_block_dma =
2290                                      FORE200E_DMA_INDEX(bsq->rbd_block.dma_addr, struct rbd_block, i);
2291                 bsq->host_entry[ i ].cp_entry = &cp_entry[ i ];
2292
2293                 *bsq->host_entry[ i ].status = STATUS_FREE;
2294
2295                 fore200e->bus->write(FORE200E_DMA_INDEX(bsq->status.dma_addr, enum status, i),
2296                                      &cp_entry[ i ].status_haddr);
2297             }
2298         }
2299     }
2300
2301     fore200e->state = FORE200E_STATE_INIT_BSQ;
2302     return 0;
2303 }
2304
2305
2306 static int __devinit
2307 fore200e_init_rx_queue(struct fore200e* fore200e)
2308 {
2309     struct host_rxq*     rxq =  &fore200e->host_rxq;
2310     struct cp_rxq_entry __iomem * cp_entry;
2311     int i;
2312
2313     DPRINTK(2, "receive queue is being initialized\n");
2314
2315     /* allocate and align the array of status words */
2316     if (fore200e->bus->dma_chunk_alloc(fore200e,
2317                                        &rxq->status,
2318                                        sizeof(enum status),
2319                                        QUEUE_SIZE_RX,
2320                                        fore200e->bus->status_alignment) < 0) {
2321         return -ENOMEM;
2322     }
2323
2324     /* allocate and align the array of receive PDU descriptors */
2325     if (fore200e->bus->dma_chunk_alloc(fore200e,
2326                                        &rxq->rpd,
2327                                        sizeof(struct rpd),
2328                                        QUEUE_SIZE_RX,
2329                                        fore200e->bus->descr_alignment) < 0) {
2330
2331         fore200e->bus->dma_chunk_free(fore200e, &rxq->status);
2332         return -ENOMEM;
2333     }
2334
2335     /* get the base address of the cp resident rx queue entries */
2336     cp_entry = fore200e->virt_base + fore200e->bus->read(&fore200e->cp_queues->cp_rxq);
2337
2338     /* fill the host resident and cp resident rx entries */
2339     for (i=0; i < QUEUE_SIZE_RX; i++) {
2340
2341         rxq->host_entry[ i ].status =
2342                              FORE200E_INDEX(rxq->status.align_addr, enum status, i);
2343         rxq->host_entry[ i ].rpd =
2344                              FORE200E_INDEX(rxq->rpd.align_addr, struct rpd, i);
2345         rxq->host_entry[ i ].rpd_dma =
2346                              FORE200E_DMA_INDEX(rxq->rpd.dma_addr, struct rpd, i);
2347         rxq->host_entry[ i ].cp_entry = &cp_entry[ i ];
2348
2349         *rxq->host_entry[ i ].status = STATUS_FREE;
2350
2351         fore200e->bus->write(FORE200E_DMA_INDEX(rxq->status.dma_addr, enum status, i),
2352                              &cp_entry[ i ].status_haddr);
2353
2354         fore200e->bus->write(FORE200E_DMA_INDEX(rxq->rpd.dma_addr, struct rpd, i),
2355                              &cp_entry[ i ].rpd_haddr);
2356     }
2357
2358     /* set the head entry of the queue */
2359     rxq->head = 0;
2360
2361     fore200e->state = FORE200E_STATE_INIT_RXQ;
2362     return 0;
2363 }
2364
2365
2366 static int __devinit
2367 fore200e_init_tx_queue(struct fore200e* fore200e)
2368 {
2369     struct host_txq*     txq =  &fore200e->host_txq;
2370     struct cp_txq_entry __iomem * cp_entry;
2371     int i;
2372
2373     DPRINTK(2, "transmit queue is being initialized\n");
2374
2375     /* allocate and align the array of status words */
2376     if (fore200e->bus->dma_chunk_alloc(fore200e,
2377                                        &txq->status,
2378                                        sizeof(enum status),
2379                                        QUEUE_SIZE_TX,
2380                                        fore200e->bus->status_alignment) < 0) {
2381         return -ENOMEM;
2382     }
2383
2384     /* allocate and align the array of transmit PDU descriptors */
2385     if (fore200e->bus->dma_chunk_alloc(fore200e,
2386                                        &txq->tpd,
2387                                        sizeof(struct tpd),
2388                                        QUEUE_SIZE_TX,
2389                                        fore200e->bus->descr_alignment) < 0) {
2390
2391         fore200e->bus->dma_chunk_free(fore200e, &txq->status);
2392         return -ENOMEM;
2393     }
2394
2395     /* get the base address of the cp resident tx queue entries */
2396     cp_entry = fore200e->virt_base + fore200e->bus->read(&fore200e->cp_queues->cp_txq);
2397
2398     /* fill the host resident and cp resident tx entries */
2399     for (i=0; i < QUEUE_SIZE_TX; i++) {
2400
2401         txq->host_entry[ i ].status =
2402                              FORE200E_INDEX(txq->status.align_addr, enum status, i);
2403         txq->host_entry[ i ].tpd =
2404                              FORE200E_INDEX(txq->tpd.align_addr, struct tpd, i);
2405         txq->host_entry[ i ].tpd_dma  =
2406                              FORE200E_DMA_INDEX(txq->tpd.dma_addr, struct tpd, i);
2407         txq->host_entry[ i ].cp_entry = &cp_entry[ i ];
2408
2409         *txq->host_entry[ i ].status = STATUS_FREE;
2410
2411         fore200e->bus->write(FORE200E_DMA_INDEX(txq->status.dma_addr, enum status, i),
2412                              &cp_entry[ i ].status_haddr);
2413
2414         /* although there is a one-to-one mapping of tx queue entries and tpds,
2415            we do not write here the DMA (physical) base address of each tpd into
2416            the related cp resident entry, because the cp relies on this write
2417            operation to detect that a new pdu has been submitted for tx */
2418     }
2419
2420     /* set the head and tail entries of the queue */
2421     txq->head = 0;
2422     txq->tail = 0;
2423
2424     fore200e->state = FORE200E_STATE_INIT_TXQ;
2425     return 0;
2426 }
2427
2428
2429 static int __devinit
2430 fore200e_init_cmd_queue(struct fore200e* fore200e)
2431 {
2432     struct host_cmdq*     cmdq =  &fore200e->host_cmdq;
2433     struct cp_cmdq_entry __iomem * cp_entry;
2434     int i;
2435
2436     DPRINTK(2, "command queue is being initialized\n");
2437
2438     /* allocate and align the array of status words */
2439     if (fore200e->bus->dma_chunk_alloc(fore200e,
2440                                        &cmdq->status,
2441                                        sizeof(enum status),
2442                                        QUEUE_SIZE_CMD,
2443                                        fore200e->bus->status_alignment) < 0) {
2444         return -ENOMEM;
2445     }
2446
2447     /* get the base address of the cp resident cmd queue entries */
2448     cp_entry = fore200e->virt_base + fore200e->bus->read(&fore200e->cp_queues->cp_cmdq);
2449
2450     /* fill the host resident and cp resident cmd entries */
2451     for (i=0; i < QUEUE_SIZE_CMD; i++) {
2452
2453         cmdq->host_entry[ i ].status   =
2454                               FORE200E_INDEX(cmdq->status.align_addr, enum status, i);
2455         cmdq->host_entry[ i ].cp_entry = &cp_entry[ i ];
2456
2457         *cmdq->host_entry[ i ].status = STATUS_FREE;
2458
2459         fore200e->bus->write(FORE200E_DMA_INDEX(cmdq->status.dma_addr, enum status, i),
2460                              &cp_entry[ i ].status_haddr);
2461     }
2462
2463     /* set the head entry of the queue */
2464     cmdq->head = 0;
2465
2466     fore200e->state = FORE200E_STATE_INIT_CMDQ;
2467     return 0;
2468 }
2469
2470
2471 static void __init
2472 fore200e_param_bs_queue(struct fore200e* fore200e,
2473                         enum buffer_scheme scheme, enum buffer_magn magn,
2474                         int queue_length, int pool_size, int supply_blksize)
2475 {
2476     struct bs_spec __iomem * bs_spec = &fore200e->cp_queues->init.bs_spec[ scheme ][ magn ];
2477
2478     fore200e->bus->write(queue_length,                           &bs_spec->queue_length);
2479     fore200e->bus->write(fore200e_rx_buf_size[ scheme ][ magn ], &bs_spec->buffer_size);
2480     fore200e->bus->write(pool_size,                              &bs_spec->pool_size);
2481     fore200e->bus->write(supply_blksize,                         &bs_spec->supply_blksize);
2482 }
2483
2484
2485 static int __devinit
2486 fore200e_initialize(struct fore200e* fore200e)
2487 {
2488     struct cp_queues __iomem * cpq;
2489     int               ok, scheme, magn;
2490
2491     DPRINTK(2, "device %s being initialized\n", fore200e->name);
2492
2493     init_MUTEX(&fore200e->rate_sf);
2494     spin_lock_init(&fore200e->q_lock);
2495
2496     cpq = fore200e->cp_queues = fore200e->virt_base + FORE200E_CP_QUEUES_OFFSET;
2497
2498     /* enable cp to host interrupts */
2499     fore200e->bus->write(1, &cpq->imask);
2500
2501     if (fore200e->bus->irq_enable)
2502         fore200e->bus->irq_enable(fore200e);
2503
2504     fore200e->bus->write(NBR_CONNECT, &cpq->init.num_connect);
2505
2506     fore200e->bus->write(QUEUE_SIZE_CMD, &cpq->init.cmd_queue_len);
2507     fore200e->bus->write(QUEUE_SIZE_RX,  &cpq->init.rx_queue_len);
2508     fore200e->bus->write(QUEUE_SIZE_TX,  &cpq->init.tx_queue_len);
2509
2510     fore200e->bus->write(RSD_EXTENSION,  &cpq->init.rsd_extension);
2511     fore200e->bus->write(TSD_EXTENSION,  &cpq->init.tsd_extension);
2512
2513     for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++)
2514         for (magn = 0; magn < BUFFER_MAGN_NBR; magn++)
2515             fore200e_param_bs_queue(fore200e, scheme, magn,
2516                                     QUEUE_SIZE_BS,
2517                                     fore200e_rx_buf_nbr[ scheme ][ magn ],
2518                                     RBD_BLK_SIZE);
2519
2520     /* issue the initialize command */
2521     fore200e->bus->write(STATUS_PENDING,    &cpq->init.status);
2522     fore200e->bus->write(OPCODE_INITIALIZE, &cpq->init.opcode);
2523
2524     ok = fore200e_io_poll(fore200e, &cpq->init.status, STATUS_COMPLETE, 3000);
2525     if (ok == 0) {
2526         printk(FORE200E "device %s initialization failed\n", fore200e->name);
2527         return -ENODEV;
2528     }
2529
2530     printk(FORE200E "device %s initialized\n", fore200e->name);
2531
2532     fore200e->state = FORE200E_STATE_INITIALIZE;
2533     return 0;
2534 }
2535
2536
2537 static void __devinit
2538 fore200e_monitor_putc(struct fore200e* fore200e, char c)
2539 {
2540     struct cp_monitor __iomem * monitor = fore200e->cp_monitor;
2541
2542 #if 0
2543     printk("%c", c);
2544 #endif
2545     fore200e->bus->write(((u32) c) | FORE200E_CP_MONITOR_UART_AVAIL, &monitor->soft_uart.send);
2546 }
2547
2548
2549 static int __devinit
2550 fore200e_monitor_getc(struct fore200e* fore200e)
2551 {
2552     struct cp_monitor __iomem * monitor = fore200e->cp_monitor;
2553     unsigned long      timeout = jiffies + msecs_to_jiffies(50);
2554     int                c;
2555
2556     while (time_before(jiffies, timeout)) {
2557
2558         c = (int) fore200e->bus->read(&monitor->soft_uart.recv);
2559
2560         if (c & FORE200E_CP_MONITOR_UART_AVAIL) {
2561
2562             fore200e->bus->write(FORE200E_CP_MONITOR_UART_FREE, &monitor->soft_uart.recv);
2563 #if 0
2564             printk("%c", c & 0xFF);
2565 #endif
2566             return c & 0xFF;
2567         }
2568     }
2569
2570     return -1;
2571 }
2572
2573
2574 static void __devinit
2575 fore200e_monitor_puts(struct fore200e* fore200e, char* str)
2576 {
2577     while (*str) {
2578
2579         /* the i960 monitor doesn't accept any new character if it has something to say */
2580         while (fore200e_monitor_getc(fore200e) >= 0);
2581
2582         fore200e_monitor_putc(fore200e, *str++);
2583     }
2584
2585     while (fore200e_monitor_getc(fore200e) >= 0);
2586 }
2587
2588
2589 static int __devinit
2590 fore200e_start_fw(struct fore200e* fore200e)
2591 {
2592     int               ok;
2593     char              cmd[ 48 ];
2594     struct fw_header* fw_header = (struct fw_header*) fore200e->bus->fw_data;
2595
2596     DPRINTK(2, "device %s firmware being started\n", fore200e->name);
2597
2598 #if defined(__sparc_v9__)
2599     /* reported to be required by SBA cards on some sparc64 hosts */
2600     fore200e_spin(100);
2601 #endif
2602
2603     sprintf(cmd, "\rgo %x\r", le32_to_cpu(fw_header->start_offset));
2604
2605     fore200e_monitor_puts(fore200e, cmd);
2606
2607     ok = fore200e_io_poll(fore200e, &fore200e->cp_monitor->bstat, BSTAT_CP_RUNNING, 1000);
2608     if (ok == 0) {
2609         printk(FORE200E "device %s firmware didn't start\n", fore200e->name);
2610         return -ENODEV;
2611     }
2612
2613     printk(FORE200E "device %s firmware started\n", fore200e->name);
2614
2615     fore200e->state = FORE200E_STATE_START_FW;
2616     return 0;
2617 }
2618
2619
2620 static int __devinit
2621 fore200e_load_fw(struct fore200e* fore200e)
2622 {
2623     u32* fw_data = (u32*) fore200e->bus->fw_data;
2624     u32  fw_size = (u32) *fore200e->bus->fw_size / sizeof(u32);
2625
2626     struct fw_header* fw_header = (struct fw_header*) fw_data;
2627
2628     u32 __iomem *load_addr = fore200e->virt_base + le32_to_cpu(fw_header->load_offset);
2629
2630     DPRINTK(2, "device %s firmware being loaded at 0x%p (%d words)\n",
2631             fore200e->name, load_addr, fw_size);
2632
2633     if (le32_to_cpu(fw_header->magic) != FW_HEADER_MAGIC) {
2634         printk(FORE200E "corrupted %s firmware image\n", fore200e->bus->model_name);
2635         return -ENODEV;
2636     }
2637
2638     for (; fw_size--; fw_data++, load_addr++)
2639         fore200e->bus->write(le32_to_cpu(*fw_data), load_addr);
2640
2641     fore200e->state = FORE200E_STATE_LOAD_FW;
2642     return 0;
2643 }
2644
2645
2646 static int __devinit
2647 fore200e_register(struct fore200e* fore200e)
2648 {
2649     struct atm_dev* atm_dev;
2650
2651     DPRINTK(2, "device %s being registered\n", fore200e->name);
2652
2653     atm_dev = atm_dev_register(fore200e->bus->proc_name, &fore200e_ops, -1,
2654       NULL);
2655     if (atm_dev == NULL) {
2656         printk(FORE200E "unable to register device %s\n", fore200e->name);
2657         return -ENODEV;
2658     }
2659
2660     atm_dev->dev_data = fore200e;
2661     fore200e->atm_dev = atm_dev;
2662
2663     atm_dev->ci_range.vpi_bits = FORE200E_VPI_BITS;
2664     atm_dev->ci_range.vci_bits = FORE200E_VCI_BITS;
2665
2666     fore200e->available_cell_rate = ATM_OC3_PCR;
2667
2668     fore200e->state = FORE200E_STATE_REGISTER;
2669     return 0;
2670 }
2671
2672
2673 static int __devinit
2674 fore200e_init(struct fore200e* fore200e)
2675 {
2676     if (fore200e_register(fore200e) < 0)
2677         return -ENODEV;
2678
2679     if (fore200e->bus->configure(fore200e) < 0)
2680         return -ENODEV;
2681
2682     if (fore200e->bus->map(fore200e) < 0)
2683         return -ENODEV;
2684
2685     if (fore200e_reset(fore200e, 1) < 0)
2686         return -ENODEV;
2687
2688     if (fore200e_load_fw(fore200e) < 0)
2689         return -ENODEV;
2690
2691     if (fore200e_start_fw(fore200e) < 0)
2692         return -ENODEV;
2693
2694     if (fore200e_initialize(fore200e) < 0)
2695         return -ENODEV;
2696
2697     if (fore200e_init_cmd_queue(fore200e) < 0)
2698         return -ENOMEM;
2699
2700     if (fore200e_init_tx_queue(fore200e) < 0)
2701         return -ENOMEM;
2702
2703     if (fore200e_init_rx_queue(fore200e) < 0)
2704         return -ENOMEM;
2705
2706     if (fore200e_init_bs_queue(fore200e) < 0)
2707         return -ENOMEM;
2708
2709     if (fore200e_alloc_rx_buf(fore200e) < 0)
2710         return -ENOMEM;
2711
2712     if (fore200e_get_esi(fore200e) < 0)
2713         return -EIO;
2714
2715     if (fore200e_irq_request(fore200e) < 0)
2716         return -EBUSY;
2717
2718     fore200e_supply(fore200e);
2719
2720     /* all done, board initialization is now complete */
2721     fore200e->state = FORE200E_STATE_COMPLETE;
2722     return 0;
2723 }
2724
2725
2726 static int __devinit
2727 fore200e_pca_detect(struct pci_dev *pci_dev, const struct pci_device_id *pci_ent)
2728 {
2729     const struct fore200e_bus* bus = (struct fore200e_bus*) pci_ent->driver_data;
2730     struct fore200e* fore200e;
2731     int err = 0;
2732     static int index = 0;
2733
2734     if (pci_enable_device(pci_dev)) {
2735         err = -EINVAL;
2736         goto out;
2737     }
2738
2739     fore200e = fore200e_kmalloc(sizeof(struct fore200e), GFP_KERNEL);
2740     if (fore200e == NULL) {
2741         err = -ENOMEM;
2742         goto out_disable;
2743     }
2744
2745     fore200e->bus       = bus;
2746     fore200e->bus_dev   = pci_dev;
2747     fore200e->irq       = pci_dev->irq;
2748     fore200e->phys_base = pci_resource_start(pci_dev, 0);
2749
2750     sprintf(fore200e->name, "%s-%d", bus->model_name, index - 1);
2751
2752     pci_set_master(pci_dev);
2753
2754     printk(FORE200E "device %s found at 0x%lx, IRQ %s\n",
2755            fore200e->bus->model_name,
2756            fore200e->phys_base, fore200e_irq_itoa(fore200e->irq));
2757
2758     sprintf(fore200e->name, "%s-%d", bus->model_name, index);
2759
2760     err = fore200e_init(fore200e);
2761     if (err < 0) {
2762         fore200e_shutdown(fore200e);
2763         goto out_free;
2764     }
2765
2766     ++index;
2767     pci_set_drvdata(pci_dev, fore200e);
2768
2769 out:
2770     return err;
2771
2772 out_free:
2773     kfree(fore200e);
2774 out_disable:
2775     pci_disable_device(pci_dev);
2776     goto out;
2777 }
2778
2779
2780 static void __devexit fore200e_pca_remove_one(struct pci_dev *pci_dev)
2781 {
2782     struct fore200e *fore200e;
2783
2784     fore200e = pci_get_drvdata(pci_dev);
2785
2786     fore200e_shutdown(fore200e);
2787     kfree(fore200e);
2788     pci_disable_device(pci_dev);
2789 }
2790
2791
2792 #ifdef CONFIG_ATM_FORE200E_PCA
2793 static struct pci_device_id fore200e_pca_tbl[] = {
2794     { PCI_VENDOR_ID_FORE, PCI_DEVICE_ID_FORE_PCA200E, PCI_ANY_ID, PCI_ANY_ID,
2795       0, 0, (unsigned long) &fore200e_bus[0] },
2796     { 0, }
2797 };
2798
2799 MODULE_DEVICE_TABLE(pci, fore200e_pca_tbl);
2800
2801 static struct pci_driver fore200e_pca_driver = {
2802     .name =     "fore_200e",
2803     .probe =    fore200e_pca_detect,
2804     .remove =   __devexit_p(fore200e_pca_remove_one),
2805     .id_table = fore200e_pca_tbl,
2806 };
2807 #endif
2808
2809
2810 static int __init
2811 fore200e_module_init(void)
2812 {
2813     const struct fore200e_bus* bus;
2814     struct       fore200e*     fore200e;
2815     int                        index;
2816
2817     printk(FORE200E "FORE Systems 200E-series ATM driver - version " FORE200E_VERSION "\n");
2818
2819     /* for each configured bus interface */
2820     for (bus = fore200e_bus; bus->model_name; bus++) {
2821
2822         /* detect all boards present on that bus */
2823         for (index = 0; bus->detect && (fore200e = bus->detect(bus, index)); index++) {
2824
2825             printk(FORE200E "device %s found at 0x%lx, IRQ %s\n",
2826                    fore200e->bus->model_name,
2827                    fore200e->phys_base, fore200e_irq_itoa(fore200e->irq));
2828
2829             sprintf(fore200e->name, "%s-%d", bus->model_name, index);
2830
2831             if (fore200e_init(fore200e) < 0) {
2832
2833                 fore200e_shutdown(fore200e);
2834                 break;
2835             }
2836
2837             list_add(&fore200e->entry, &fore200e_boards);
2838         }
2839     }
2840
2841 #ifdef CONFIG_ATM_FORE200E_PCA
2842     if (!pci_register_driver(&fore200e_pca_driver))
2843         return 0;
2844 #endif
2845
2846     if (!list_empty(&fore200e_boards))
2847         return 0;
2848
2849     return -ENODEV;
2850 }
2851
2852
2853 static void __exit
2854 fore200e_module_cleanup(void)
2855 {
2856     struct fore200e *fore200e, *next;
2857
2858 #ifdef CONFIG_ATM_FORE200E_PCA
2859     pci_unregister_driver(&fore200e_pca_driver);
2860 #endif
2861
2862     list_for_each_entry_safe(fore200e, next, &fore200e_boards, entry) {
2863         fore200e_shutdown(fore200e);
2864         kfree(fore200e);
2865     }
2866     DPRINTK(1, "module being removed\n");
2867 }
2868
2869
2870 static int
2871 fore200e_proc_read(struct atm_dev *dev, loff_t* pos, char* page)
2872 {
2873     struct fore200e*     fore200e  = FORE200E_DEV(dev);
2874     struct fore200e_vcc* fore200e_vcc;
2875     struct atm_vcc*      vcc;
2876     int                  i, len, left = *pos;
2877     unsigned long        flags;
2878
2879     if (!left--) {
2880
2881         if (fore200e_getstats(fore200e) < 0)
2882             return -EIO;
2883
2884         len = sprintf(page,"\n"
2885                        " device:\n"
2886                        "   internal name:\t\t%s\n", fore200e->name);
2887
2888         /* print bus-specific information */
2889         if (fore200e->bus->proc_read)
2890             len += fore200e->bus->proc_read(fore200e, page + len);
2891
2892         len += sprintf(page + len,
2893                 "   interrupt line:\t\t%s\n"
2894                 "   physical base address:\t0x%p\n"
2895                 "   virtual base address:\t0x%p\n"
2896                 "   factory address (ESI):\t%02x:%02x:%02x:%02x:%02x:%02x\n"
2897                 "   board serial number:\t\t%d\n\n",
2898                 fore200e_irq_itoa(fore200e->irq),
2899                 (void*)fore200e->phys_base,
2900                 fore200e->virt_base,
2901                 fore200e->esi[0], fore200e->esi[1], fore200e->esi[2],
2902                 fore200e->esi[3], fore200e->esi[4], fore200e->esi[5],
2903                 fore200e->esi[4] * 256 + fore200e->esi[5]);
2904
2905         return len;
2906     }
2907
2908     if (!left--)
2909         return sprintf(page,
2910                        "   free small bufs, scheme 1:\t%d\n"
2911                        "   free large bufs, scheme 1:\t%d\n"
2912                        "   free small bufs, scheme 2:\t%d\n"
2913                        "   free large bufs, scheme 2:\t%d\n",
2914                        fore200e->host_bsq[ BUFFER_SCHEME_ONE ][ BUFFER_MAGN_SMALL ].freebuf_count,
2915                        fore200e->host_bsq[ BUFFER_SCHEME_ONE ][ BUFFER_MAGN_LARGE ].freebuf_count,
2916                        fore200e->host_bsq[ BUFFER_SCHEME_TWO ][ BUFFER_MAGN_SMALL ].freebuf_count,
2917                        fore200e->host_bsq[ BUFFER_SCHEME_TWO ][ BUFFER_MAGN_LARGE ].freebuf_count);
2918
2919     if (!left--) {
2920         u32 hb = fore200e->bus->read(&fore200e->cp_queues->heartbeat);
2921
2922         len = sprintf(page,"\n\n"
2923                       " cell processor:\n"
2924                       "   heartbeat state:\t\t");
2925
2926         if (hb >> 16 != 0xDEAD)
2927             len += sprintf(page + len, "0x%08x\n", hb);
2928         else
2929             len += sprintf(page + len, "*** FATAL ERROR %04x ***\n", hb & 0xFFFF);
2930
2931         return len;
2932     }
2933
2934     if (!left--) {
2935         static const char* media_name[] = {
2936             "unshielded twisted pair",
2937             "multimode optical fiber ST",
2938             "multimode optical fiber SC",
2939             "single-mode optical fiber ST",
2940             "single-mode optical fiber SC",
2941             "unknown"
2942         };
2943
2944         static const char* oc3_mode[] = {
2945             "normal operation",
2946             "diagnostic loopback",
2947             "line loopback",
2948             "unknown"
2949         };
2950
2951         u32 fw_release     = fore200e->bus->read(&fore200e->cp_queues->fw_release);
2952         u32 mon960_release = fore200e->bus->read(&fore200e->cp_queues->mon960_release);
2953         u32 oc3_revision   = fore200e->bus->read(&fore200e->cp_queues->oc3_revision);
2954         u32 media_index    = FORE200E_MEDIA_INDEX(fore200e->bus->read(&fore200e->cp_queues->media_type));
2955         u32 oc3_index;
2956
2957         if ((media_index < 0) || (media_index > 4))
2958             media_index = 5;
2959
2960         switch (fore200e->loop_mode) {
2961             case ATM_LM_NONE:    oc3_index = 0;
2962                                  break;
2963             case ATM_LM_LOC_PHY: oc3_index = 1;
2964                                  break;
2965             case ATM_LM_RMT_PHY: oc3_index = 2;
2966                                  break;
2967             default:             oc3_index = 3;
2968         }
2969
2970         return sprintf(page,
2971                        "   firmware release:\t\t%d.%d.%d\n"
2972                        "   monitor release:\t\t%d.%d\n"
2973                        "   media type:\t\t\t%s\n"
2974                        "   OC-3 revision:\t\t0x%x\n"
2975                        "   OC-3 mode:\t\t\t%s",
2976                        fw_release >> 16, fw_release << 16 >> 24,  fw_release << 24 >> 24,
2977                        mon960_release >> 16, mon960_release << 16 >> 16,
2978                        media_name[ media_index ],
2979                        oc3_revision,
2980                        oc3_mode[ oc3_index ]);
2981     }
2982
2983     if (!left--) {
2984         struct cp_monitor __iomem * cp_monitor = fore200e->cp_monitor;
2985
2986         return sprintf(page,
2987                        "\n\n"
2988                        " monitor:\n"
2989                        "   version number:\t\t%d\n"
2990                        "   boot status word:\t\t0x%08x\n",
2991                        fore200e->bus->read(&cp_monitor->mon_version),
2992                        fore200e->bus->read(&cp_monitor->bstat));
2993     }
2994
2995     if (!left--)
2996         return sprintf(page,
2997                        "\n"
2998                        " device statistics:\n"
2999                        "  4b5b:\n"
3000                        "     crc_header_errors:\t\t%10u\n"
3001                        "     framing_errors:\t\t%10u\n",
3002                        fore200e_swap(fore200e->stats->phy.crc_header_errors),
3003                        fore200e_swap(fore200e->stats->phy.framing_errors));
3004
3005     if (!left--)
3006         return sprintf(page, "\n"
3007                        "  OC-3:\n"
3008                        "     section_bip8_errors:\t%10u\n"
3009                        "     path_bip8_errors:\t\t%10u\n"
3010                        "     line_bip24_errors:\t\t%10u\n"
3011                        "     line_febe_errors:\t\t%10u\n"
3012                        "     path_febe_errors:\t\t%10u\n"
3013                        "     corr_hcs_errors:\t\t%10u\n"
3014                        "     ucorr_hcs_errors:\t\t%10u\n",
3015                        fore200e_swap(fore200e->stats->oc3.section_bip8_errors),
3016                        fore200e_swap(fore200e->stats->oc3.path_bip8_errors),
3017                        fore200e_swap(fore200e->stats->oc3.line_bip24_errors),
3018                        fore200e_swap(fore200e->stats->oc3.line_febe_errors),
3019                        fore200e_swap(fore200e->stats->oc3.path_febe_errors),
3020                        fore200e_swap(fore200e->stats->oc3.corr_hcs_errors),
3021                        fore200e_swap(fore200e->stats->oc3.ucorr_hcs_errors));
3022
3023     if (!left--)
3024         return sprintf(page,"\n"
3025                        "   ATM:\t\t\t\t     cells\n"
3026                        "     TX:\t\t\t%10u\n"
3027                        "     RX:\t\t\t%10u\n"
3028                        "     vpi out of range:\t\t%10u\n"
3029                        "     vpi no conn:\t\t%10u\n"
3030                        "     vci out of range:\t\t%10u\n"
3031                        "     vci no conn:\t\t%10u\n",
3032                        fore200e_swap(fore200e->stats->atm.cells_transmitted),
3033                        fore200e_swap(fore200e->stats->atm.cells_received),
3034                        fore200e_swap(fore200e->stats->atm.vpi_bad_range),
3035                        fore200e_swap(fore200e->stats->atm.vpi_no_conn),
3036                        fore200e_swap(fore200e->stats->atm.vci_bad_range),
3037                        fore200e_swap(fore200e->stats->atm.vci_no_conn));
3038
3039     if (!left--)
3040         return sprintf(page,"\n"
3041                        "   AAL0:\t\t\t     cells\n"
3042                        "     TX:\t\t\t%10u\n"
3043                        "     RX:\t\t\t%10u\n"
3044                        "     dropped:\t\t\t%10u\n",
3045                        fore200e_swap(fore200e->stats->aal0.cells_transmitted),
3046                        fore200e_swap(fore200e->stats->aal0.cells_received),
3047                        fore200e_swap(fore200e->stats->aal0.cells_dropped));
3048
3049     if (!left--)
3050         return sprintf(page,"\n"
3051                        "   AAL3/4:\n"
3052                        "     SAR sublayer:\t\t     cells\n"
3053                        "       TX:\t\t\t%10u\n"
3054                        "       RX:\t\t\t%10u\n"
3055                        "       dropped:\t\t\t%10u\n"
3056                        "       CRC errors:\t\t%10u\n"
3057                        "       protocol errors:\t\t%10u\n\n"
3058                        "     CS  sublayer:\t\t      PDUs\n"
3059                        "       TX:\t\t\t%10u\n"
3060                        "       RX:\t\t\t%10u\n"
3061                        "       dropped:\t\t\t%10u\n"
3062                        "       protocol errors:\t\t%10u\n",
3063                        fore200e_swap(fore200e->stats->aal34.cells_transmitted),
3064                        fore200e_swap(fore200e->stats->aal34.cells_received),
3065                        fore200e_swap(fore200e->stats->aal34.cells_dropped),
3066                        fore200e_swap(fore200e->stats->aal34.cells_crc_errors),
3067                        fore200e_swap(fore200e->stats->aal34.cells_protocol_errors),
3068                        fore200e_swap(fore200e->stats->aal34.cspdus_transmitted),
3069                        fore200e_swap(fore200e->stats->aal34.cspdus_received),
3070                        fore200e_swap(fore200e->stats->aal34.cspdus_dropped),
3071                        fore200e_swap(fore200e->stats->aal34.cspdus_protocol_errors));
3072
3073     if (!left--)
3074         return sprintf(page,"\n"
3075                        "   AAL5:\n"
3076                        "     SAR sublayer:\t\t     cells\n"
3077                        "       TX:\t\t\t%10u\n"
3078                        "       RX:\t\t\t%10u\n"
3079                        "       dropped:\t\t\t%10u\n"
3080                        "       congestions:\t\t%10u\n\n"
3081                        "     CS  sublayer:\t\t      PDUs\n"
3082                        "       TX:\t\t\t%10u\n"
3083                        "       RX:\t\t\t%10u\n"
3084                        "       dropped:\t\t\t%10u\n"
3085                        "       CRC errors:\t\t%10u\n"
3086                        "       protocol errors:\t\t%10u\n",
3087                        fore200e_swap(fore200e->stats->aal5.cells_transmitted),
3088                        fore200e_swap(fore200e->stats->aal5.cells_received),
3089                        fore200e_swap(fore200e->stats->aal5.cells_dropped),
3090                        fore200e_swap(fore200e->stats->aal5.congestion_experienced),
3091                        fore200e_swap(fore200e->stats->aal5.cspdus_transmitted),
3092                        fore200e_swap(fore200e->stats->aal5.cspdus_received),
3093                        fore200e_swap(fore200e->stats->aal5.cspdus_dropped),
3094                        fore200e_swap(fore200e->stats->aal5.cspdus_crc_errors),
3095                        fore200e_swap(fore200e->stats->aal5.cspdus_protocol_errors));
3096
3097     if (!left--)
3098         return sprintf(page,"\n"
3099                        "   AUX:\t\t       allocation failures\n"
3100                        "     small b1:\t\t\t%10u\n"
3101                        "     large b1:\t\t\t%10u\n"
3102                        "     small b2:\t\t\t%10u\n"
3103                        "     large b2:\t\t\t%10u\n"
3104                        "     RX PDUs:\t\t\t%10u\n"
3105                        "     TX PDUs:\t\t\t%10lu\n",
3106                        fore200e_swap(fore200e->stats->aux.small_b1_failed),
3107                        fore200e_swap(fore200e->stats->aux.large_b1_failed),
3108                        fore200e_swap(fore200e->stats->aux.small_b2_failed),
3109                        fore200e_swap(fore200e->stats->aux.large_b2_failed),
3110                        fore200e_swap(fore200e->stats->aux.rpd_alloc_failed),
3111                        fore200e->tx_sat);
3112
3113     if (!left--)
3114         return sprintf(page,"\n"
3115                        " receive carrier:\t\t\t%s\n",
3116                        fore200e->stats->aux.receive_carrier ? "ON" : "OFF!");
3117
3118     if (!left--) {
3119         return sprintf(page,"\n"
3120                        " VCCs:\n  address   VPI VCI   AAL "
3121                        "TX PDUs   TX min/max size  RX PDUs   RX min/max size\n");
3122     }
3123
3124     for (i = 0; i < NBR_CONNECT; i++) {
3125
3126         vcc = fore200e->vc_map[i].vcc;
3127
3128         if (vcc == NULL)
3129             continue;
3130
3131         spin_lock_irqsave(&fore200e->q_lock, flags);
3132
3133         if (vcc && test_bit(ATM_VF_READY, &vcc->flags) && !left--) {
3134
3135             fore200e_vcc = FORE200E_VCC(vcc);
3136             ASSERT(fore200e_vcc);
3137
3138             len = sprintf(page,
3139                           "  %08x  %03d %05d %1d   %09lu %05d/%05d      %09lu %05d/%05d\n",
3140                           (u32)(unsigned long)vcc,
3141                           vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal),
3142                           fore200e_vcc->tx_pdu,
3143                           fore200e_vcc->tx_min_pdu > 0xFFFF ? 0 : fore200e_vcc->tx_min_pdu,
3144                           fore200e_vcc->tx_max_pdu,
3145                           fore200e_vcc->rx_pdu,
3146                           fore200e_vcc->rx_min_pdu > 0xFFFF ? 0 : fore200e_vcc->rx_min_pdu,
3147                           fore200e_vcc->rx_max_pdu);
3148
3149             spin_unlock_irqrestore(&fore200e->q_lock, flags);
3150             return len;
3151         }
3152
3153         spin_unlock_irqrestore(&fore200e->q_lock, flags);
3154     }
3155
3156     return 0;
3157 }
3158
3159 module_init(fore200e_module_init);
3160 module_exit(fore200e_module_cleanup);
3161
3162
3163 static const struct atmdev_ops fore200e_ops =
3164 {
3165         .open       = fore200e_open,
3166         .close      = fore200e_close,
3167         .ioctl      = fore200e_ioctl,
3168         .getsockopt = fore200e_getsockopt,
3169         .setsockopt = fore200e_setsockopt,
3170         .send       = fore200e_send,
3171         .change_qos = fore200e_change_qos,
3172         .proc_read  = fore200e_proc_read,
3173         .owner      = THIS_MODULE
3174 };
3175
3176
3177 #ifdef CONFIG_ATM_FORE200E_PCA
3178 extern const unsigned char _fore200e_pca_fw_data[];
3179 extern const unsigned int  _fore200e_pca_fw_size;
3180 #endif
3181 #ifdef CONFIG_ATM_FORE200E_SBA
3182 extern const unsigned char _fore200e_sba_fw_data[];
3183 extern const unsigned int  _fore200e_sba_fw_size;
3184 #endif
3185
3186 static const struct fore200e_bus fore200e_bus[] = {
3187 #ifdef CONFIG_ATM_FORE200E_PCA
3188     { "PCA-200E", "pca200e", 32, 4, 32,
3189       _fore200e_pca_fw_data, &_fore200e_pca_fw_size,
3190       fore200e_pca_read,
3191       fore200e_pca_write,
3192       fore200e_pca_dma_map,
3193       fore200e_pca_dma_unmap,
3194       fore200e_pca_dma_sync_for_cpu,
3195       fore200e_pca_dma_sync_for_device,
3196       fore200e_pca_dma_chunk_alloc,
3197       fore200e_pca_dma_chunk_free,
3198       NULL,
3199       fore200e_pca_configure,
3200       fore200e_pca_map,
3201       fore200e_pca_reset,
3202       fore200e_pca_prom_read,
3203       fore200e_pca_unmap,
3204       NULL,
3205       fore200e_pca_irq_check,
3206       fore200e_pca_irq_ack,
3207       fore200e_pca_proc_read,
3208     },
3209 #endif
3210 #ifdef CONFIG_ATM_FORE200E_SBA
3211     { "SBA-200E", "sba200e", 32, 64, 32,
3212       _fore200e_sba_fw_data, &_fore200e_sba_fw_size,
3213       fore200e_sba_read,
3214       fore200e_sba_write,
3215       fore200e_sba_dma_map,
3216       fore200e_sba_dma_unmap,
3217       fore200e_sba_dma_sync_for_cpu,
3218       fore200e_sba_dma_sync_for_device,
3219       fore200e_sba_dma_chunk_alloc,
3220       fore200e_sba_dma_chunk_free,
3221       fore200e_sba_detect,
3222       fore200e_sba_configure,
3223       fore200e_sba_map,
3224       fore200e_sba_reset,
3225       fore200e_sba_prom_read,
3226       fore200e_sba_unmap,
3227       fore200e_sba_irq_enable,
3228       fore200e_sba_irq_check,
3229       fore200e_sba_irq_ack,
3230       fore200e_sba_proc_read,
3231     },
3232 #endif
3233     {}
3234 };
3235
3236 #ifdef MODULE_LICENSE
3237 MODULE_LICENSE("GPL");
3238 #endif