drivers/net/ibmveth.c

   1 /**************************************************************************/
   2 /*                                                                        */
   3 /* IBM eServer i/pSeries Virtual Ethernet Device Driver                   */
   4 /* Copyright (C) 2003 IBM Corp.                                           */
   5 /*  Dave Larson (larson1@us.ibm.com)                                      */
   6 /*  Santiago Leon (santil@us.ibm.com)                                     */
   7 /*                                                                        */
   8 /*  This program is free software; you can redistribute it and/or modify  */
   9 /*  it under the terms of the GNU General Public License as published by  */
  10 /*  the Free Software Foundation; either version 2 of the License, or     */
  11 /*  (at your option) any later version.                                   */
  12 /*                                                                        */
  13 /*  This program is distributed in the hope that it will be useful,       */
  14 /*  but WITHOUT ANY WARRANTY; without even the implied warranty of        */
  15 /*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         */
  16 /*  GNU General Public License for more details.                          */
  17 /*                                                                        */
  18 /*  You should have received a copy of the GNU General Public License     */
  19 /*  along with this program; if not, write to the Free Software           */
  20 /*  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  */
  21 /*                                                                   USA  */
  22 /*                                                                        */
  23 /* This module contains the implementation of a virtual ethernet device   */
  24 /* for use with IBM i/pSeries LPAR Linux.  It utilizes the logical LAN    */
  25 /* option of the RS/6000 Platform Architechture to interface with virtual */
  26 /* ethernet NICs that are presented to the partition by the hypervisor.   */
  27 /*                                                                        */
  28 /**************************************************************************/
  29 /*
  30   TODO:
  31   - remove frag processing code - no longer needed
  32   - add support for sysfs
  33   - possibly remove procfs support
  34 */
  35
  36 #include <linux/config.h>
  37 #include <linux/module.h>
  38 #include <linux/version.h>
  39 #include <linux/types.h>
  40 #include <linux/errno.h>
  41 #include <linux/ioport.h>
  42 #include <linux/dma-mapping.h>
  43 #include <linux/kernel.h>
  44 #include <linux/netdevice.h>
  45 #include <linux/etherdevice.h>
  46 #include <linux/skbuff.h>
  47 #include <linux/init.h>
  48 #include <linux/delay.h>
  49 #include <linux/mm.h>
  50 #include <linux/ethtool.h>
  51 #include <linux/proc_fs.h>
  52 #include <asm/semaphore.h>
  53 #include <asm/hvcall.h>
  54 #include <asm/atomic.h>
  55 #include <asm/iommu.h>
  56 #include <asm/vio.h>
  57 #include <asm/uaccess.h>
  58 #include <linux/seq_file.h>
  59
  60 #include "ibmveth.h"
  61
  62 #define DEBUG 1
  63
  64 #define ibmveth_printk(fmt, args...) \
  65   printk(KERN_INFO "%s: " fmt, __FILE__, ## args)
  66
  67 #define ibmveth_error_printk(fmt, args...) \
  68   printk(KERN_ERR "(%s:%3.3d ua:%x) ERROR: " fmt, __FILE__, __LINE__ , adapter->vdev->unit_address, ## args)
  69
  70 #ifdef DEBUG
  71 #define ibmveth_debug_printk_no_adapter(fmt, args...) \
  72   printk(KERN_DEBUG "(%s:%3.3d): " fmt, __FILE__, __LINE__ , ## args)
  73 #define ibmveth_debug_printk(fmt, args...) \
  74   printk(KERN_DEBUG "(%s:%3.3d ua:%x): " fmt, __FILE__, __LINE__ , adapter->vdev->unit_address, ## args)
  75 #define ibmveth_assert(expr) \
  76   if(!(expr)) {                                   \
  77     printk(KERN_DEBUG "assertion failed (%s:%3.3d ua:%x): %s\n", __FILE__, __LINE__, adapter->vdev->unit_address, #expr); \
  78     BUG(); \
  79   }
  80 #else
  81 #define ibmveth_debug_printk_no_adapter(fmt, args...)
  82 #define ibmveth_debug_printk(fmt, args...)
  83 #define ibmveth_assert(expr)
  84 #endif
  85
  86 static int ibmveth_open(struct net_device *dev);
  87 static int ibmveth_close(struct net_device *dev);
  88 static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
  89 static int ibmveth_poll(struct net_device *dev, int *budget);
  90 static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *dev);
  91 static struct net_device_stats *ibmveth_get_stats(struct net_device *dev);
  92 static void ibmveth_set_multicast_list(struct net_device *dev);
  93 static int ibmveth_change_mtu(struct net_device *dev, int new_mtu);
  94 static void ibmveth_proc_register_driver(void);
  95 static void ibmveth_proc_unregister_driver(void);
  96 static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter);
  97 static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter);
  98 static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance, struct pt_regs *regs);
  99
 100 #ifdef CONFIG_PROC_FS
 101 #define IBMVETH_PROC_DIR "ibmveth"
 102 static struct proc_dir_entry *ibmveth_proc_dir;
 103 #endif
 104
 105 static const char ibmveth_driver_name[] = "ibmveth";
 106 static const char ibmveth_driver_string[] = "IBM i/pSeries Virtual Ethernet Driver";
 107 static const char ibmveth_driver_version[] = "1.0";
 108
 109 MODULE_AUTHOR("Dave Larson <larson1@us.ibm.com>");
 110 MODULE_DESCRIPTION("IBM i/pSeries Virtual Ethernet Driver");
 111 MODULE_LICENSE("GPL");
 112
 113 /* simple methods of getting data from the current rxq entry */
 114 static inline int ibmveth_rxq_pending_buffer(struct ibmveth_adapter *adapter)
 115 {
 116         return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].toggle == adapter->rx_queue.toggle);
 117 }
 118
 119 static inline int ibmveth_rxq_buffer_valid(struct ibmveth_adapter *adapter)
 120 {
 121         return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].valid);
 122 }
 123
 124 static inline int ibmveth_rxq_frame_offset(struct ibmveth_adapter *adapter)
 125 {
 126         return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].offset);
 127 }
 128
 129 static inline int ibmveth_rxq_frame_length(struct ibmveth_adapter *adapter)
 130 {
 131         return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].length);
 132 }
 133
 134 /* setup the initial settings for a buffer pool */
 135 static void ibmveth_init_buffer_pool(struct ibmveth_buff_pool *pool, u32 pool_index, u32 pool_size, u32 buff_size)
 136 {
 137         pool->size = pool_size;
 138         pool->index = pool_index;
 139         pool->buff_size = buff_size;
 140         pool->threshold = pool_size / 2;
 141 }
 142
 143 /* allocate and setup an buffer pool - called during open */
 144 static int ibmveth_alloc_buffer_pool(struct ibmveth_buff_pool *pool)
 145 {
 146         int i;
 147
 148         pool->free_map = kmalloc(sizeof(u16) * pool->size, GFP_KERNEL);
 149
 150         if(!pool->free_map) {
 151                 return -1;
 152         }
 153
 154         pool->dma_addr = kmalloc(sizeof(dma_addr_t) * pool->size, GFP_KERNEL);
 155         if(!pool->dma_addr) {
 156                 kfree(pool->free_map);
 157                 pool->free_map = NULL;
 158                 return -1;
 159         }
 160
 161         pool->skbuff = kmalloc(sizeof(void*) * pool->size, GFP_KERNEL);
 162
 163         if(!pool->skbuff) {
 164                 kfree(pool->dma_addr);
 165                 pool->dma_addr = NULL;
 166
 167                 kfree(pool->free_map);
 168                 pool->free_map = NULL;
 169                 return -1;
 170         }
 171
 172         memset(pool->skbuff, 0, sizeof(void*) * pool->size);
 173         memset(pool->dma_addr, 0, sizeof(dma_addr_t) * pool->size);
 174
 175         for(i = 0; i < pool->size; ++i) {
 176                 pool->free_map[i] = i;
 177         }
 178
 179         atomic_set(&pool->available, 0);
 180         pool->producer_index = 0;
 181         pool->consumer_index = 0;
 182
 183         return 0;
 184 }
 185
 186 /* replenish the buffers for a pool.  note that we don't need to
 187  * skb_reserve these since they are used for incoming...
 188  */
 189 static void ibmveth_replenish_buffer_pool(struct ibmveth_adapter *adapter, struct ibmveth_buff_pool *pool)
 190 {
 191         u32 i;
 192         u32 count = pool->size - atomic_read(&pool->available);
 193         u32 buffers_added = 0;
 194
 195         mb();
 196
 197         for(i = 0; i < count; ++i) {
 198                 struct sk_buff *skb;
 199                 unsigned int free_index, index;
 200                 u64 correlator;
 201                 union ibmveth_buf_desc desc;
 202                 unsigned long lpar_rc;
 203                 dma_addr_t dma_addr;
 204
 205                 skb = alloc_skb(pool->buff_size, GFP_ATOMIC);
 206
 207                 if(!skb) {
 208                         ibmveth_debug_printk("replenish: unable to allocate skb\n");
 209                         adapter->replenish_no_mem++;
 210                         break;
 211                 }
 212
 213                 free_index = pool->consumer_index++ % pool->size;
 214                 index = pool->free_map[free_index];
 215
 216                 ibmveth_assert(index != 0xffff);
 217                 ibmveth_assert(pool->skbuff[index] == NULL);
 218
 219                 dma_addr = vio_map_single(adapter->vdev, skb->data, pool->buff_size, DMA_FROM_DEVICE);
 220
 221                 pool->dma_addr[index] = dma_addr;
 222                 pool->skbuff[index] = skb;
 223
 224                 correlator = ((u64)pool->index << 32) | index;
 225                 *(u64*)skb->data = correlator;
 226
 227                 desc.desc = 0;
 228                 desc.fields.valid = 1;
 229                 desc.fields.length = pool->buff_size;
 230                 desc.fields.address = dma_addr;
 231
 232                 lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc);
 233
 234                 if(lpar_rc != H_Success) {
 235                         pool->skbuff[index] = NULL;
 236                         pool->consumer_index--;
 237                         vio_unmap_single(adapter->vdev, pool->dma_addr[index], pool->buff_size, DMA_FROM_DEVICE);
 238                         dev_kfree_skb_any(skb);
 239                         adapter->replenish_add_buff_failure++;
 240                         break;
 241                 } else {
 242                         pool->free_map[free_index] = 0xffff;
 243                         buffers_added++;
 244                         adapter->replenish_add_buff_success++;
 245                 }
 246         }
 247
 248         mb();
 249         atomic_add(buffers_added, &(pool->available));
 250 }
 251
 252 /* check if replenishing is needed.  */
 253 static inline int ibmveth_is_replenishing_needed(struct ibmveth_adapter *adapter)
 254 {
 255         return ((atomic_read(&adapter->rx_buff_pool[0].available) < adapter->rx_buff_pool[0].threshold) ||
 256                 (atomic_read(&adapter->rx_buff_pool[1].available) < adapter->rx_buff_pool[1].threshold) ||
 257                 (atomic_read(&adapter->rx_buff_pool[2].available) < adapter->rx_buff_pool[2].threshold));
 258 }
 259
 260 /* replenish tasklet routine */
 261 static void ibmveth_replenish_task(struct ibmveth_adapter *adapter)
 262 {
 263         adapter->replenish_task_cycles++;
 264
 265         ibmveth_replenish_buffer_pool(adapter, &adapter->rx_buff_pool[0]);
 266         ibmveth_replenish_buffer_pool(adapter, &adapter->rx_buff_pool[1]);
 267         ibmveth_replenish_buffer_pool(adapter, &adapter->rx_buff_pool[2]);
 268
 269         adapter->rx_no_buffer = *(u64*)(((char*)adapter->buffer_list_addr) + 4096 - 8);
 270
 271         atomic_inc(&adapter->not_replenishing);
 272         ibmveth_assert(atomic_read(&adapter->not_replenishing) == 1);
 273 }
 274
 275 /* kick the replenish tasklet if we need replenishing and it isn't already running */
 276 static inline void ibmveth_schedule_replenishing(struct ibmveth_adapter *adapter)
 277 {
 278         if(ibmveth_is_replenishing_needed(adapter) &&
 279            (atomic_dec_if_positive(&adapter->not_replenishing) == 0)) {
 280                 schedule_work(&adapter->replenish_task);
 281         }
 282 }
 283
 284 /* empty and free ana buffer pool - also used to do cleanup in error paths */
 285 static void ibmveth_free_buffer_pool(struct ibmveth_adapter *adapter, struct ibmveth_buff_pool *pool)
 286 {
 287         int i;
 288
 289         if(pool->free_map) {
 290                 kfree(pool->free_map);
 291                 pool->free_map  = NULL;
 292         }
 293
 294         if(pool->skbuff && pool->dma_addr) {
 295                 for(i = 0; i < pool->size; ++i) {
 296                         struct sk_buff *skb = pool->skbuff[i];
 297                         if(skb) {
 298                                 vio_unmap_single(adapter->vdev,
 299                                                  pool->dma_addr[i],
 300                                                  pool->buff_size,
 301                                                  DMA_FROM_DEVICE);
 302                                 dev_kfree_skb_any(skb);
 303                                 pool->skbuff[i] = NULL;
 304                         }
 305                 }
 306         }
 307
 308         if(pool->dma_addr) {
 309                 kfree(pool->dma_addr);
 310                 pool->dma_addr = NULL;
 311         }
 312
 313         if(pool->skbuff) {
 314                 kfree(pool->skbuff);
 315                 pool->skbuff = NULL;
 316         }
 317 }
 318
 319 /* remove a buffer from a pool */
 320 static void ibmveth_remove_buffer_from_pool(struct ibmveth_adapter *adapter, u64 correlator)
 321 {
 322         unsigned int pool  = correlator >> 32;
 323         unsigned int index = correlator & 0xffffffffUL;
 324         unsigned int free_index;
 325         struct sk_buff *skb;
 326
 327         ibmveth_assert(pool < IbmVethNumBufferPools);
 328         ibmveth_assert(index < adapter->rx_buff_pool[pool].size);
 329
 330         skb = adapter->rx_buff_pool[pool].skbuff[index];
 331
 332         ibmveth_assert(skb != NULL);
 333
 334         adapter->rx_buff_pool[pool].skbuff[index] = NULL;
 335
 336         vio_unmap_single(adapter->vdev,
 337                          adapter->rx_buff_pool[pool].dma_addr[index],
 338                          adapter->rx_buff_pool[pool].buff_size,
 339                          DMA_FROM_DEVICE);
 340
 341         free_index = adapter->rx_buff_pool[pool].producer_index++ % adapter->rx_buff_pool[pool].size;
 342         adapter->rx_buff_pool[pool].free_map[free_index] = index;
 343
 344         mb();
 345
 346         atomic_dec(&(adapter->rx_buff_pool[pool].available));
 347 }
 348
 349 /* get the current buffer on the rx queue */
 350 static inline struct sk_buff *ibmveth_rxq_get_buffer(struct ibmveth_adapter *adapter)
 351 {
 352         u64 correlator = adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator;
 353         unsigned int pool = correlator >> 32;
 354         unsigned int index = correlator & 0xffffffffUL;
 355
 356         ibmveth_assert(pool < IbmVethNumBufferPools);
 357         ibmveth_assert(index < adapter->rx_buff_pool[pool].size);
 358
 359         return adapter->rx_buff_pool[pool].skbuff[index];
 360 }
 361
 362 /* recycle the current buffer on the rx queue */
 363 static void ibmveth_rxq_recycle_buffer(struct ibmveth_adapter *adapter)
 364 {
 365         u32 q_index = adapter->rx_queue.index;
 366         u64 correlator = adapter->rx_queue.queue_addr[q_index].correlator;
 367         unsigned int pool = correlator >> 32;
 368         unsigned int index = correlator & 0xffffffffUL;
 369         union ibmveth_buf_desc desc;
 370         unsigned long lpar_rc;
 371
 372         ibmveth_assert(pool < IbmVethNumBufferPools);
 373         ibmveth_assert(index < adapter->rx_buff_pool[pool].size);
 374
 375         desc.desc = 0;
 376         desc.fields.valid = 1;
 377         desc.fields.length = adapter->rx_buff_pool[pool].buff_size;
 378         desc.fields.address = adapter->rx_buff_pool[pool].dma_addr[index];
 379
 380         lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc);
 381
 382         if(lpar_rc != H_Success) {
 383                 ibmveth_debug_printk("h_add_logical_lan_buffer failed during recycle rc=%ld", lpar_rc);
 384                 ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator);
 385         }
 386
 387         if(++adapter->rx_queue.index == adapter->rx_queue.num_slots) {
 388                 adapter->rx_queue.index = 0;
 389                 adapter->rx_queue.toggle = !adapter->rx_queue.toggle;
 390         }
 391 }
 392
 393 static inline void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter)
 394 {
 395         ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator);
 396
 397         if(++adapter->rx_queue.index == adapter->rx_queue.num_slots) {
 398                 adapter->rx_queue.index = 0;
 399                 adapter->rx_queue.toggle = !adapter->rx_queue.toggle;
 400         }
 401 }
 402
 403 static void ibmveth_cleanup(struct ibmveth_adapter *adapter)
 404 {
 405         if(adapter->buffer_list_addr != NULL) {
 406                 if(!dma_mapping_error(adapter->buffer_list_dma)) {
 407                         vio_unmap_single(adapter->vdev, adapter->buffer_list_dma, 4096, DMA_BIDIRECTIONAL);
 408                         adapter->buffer_list_dma = DMA_ERROR_CODE;
 409                 }
 410                 free_page((unsigned long)adapter->buffer_list_addr);
 411                 adapter->buffer_list_addr = NULL;
 412         }
 413
 414         if(adapter->filter_list_addr != NULL) {
 415                 if(!dma_mapping_error(adapter->filter_list_dma)) {
 416                         vio_unmap_single(adapter->vdev, adapter->filter_list_dma, 4096, DMA_BIDIRECTIONAL);
 417                         adapter->filter_list_dma = DMA_ERROR_CODE;
 418                 }
 419                 free_page((unsigned long)adapter->filter_list_addr);
 420                 adapter->filter_list_addr = NULL;
 421         }
 422
 423         if(adapter->rx_queue.queue_addr != NULL) {
 424                 if(!dma_mapping_error(adapter->rx_queue.queue_dma)) {
 425                         vio_unmap_single(adapter->vdev, adapter->rx_queue.queue_dma, adapter->rx_queue.queue_len, DMA_BIDIRECTIONAL);
 426                         adapter->rx_queue.queue_dma = DMA_ERROR_CODE;
 427                 }
 428                 kfree(adapter->rx_queue.queue_addr);
 429                 adapter->rx_queue.queue_addr = NULL;
 430         }
 431
 432         ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[0]);
 433         ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[1]);
 434         ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[2]);
 435 }
 436
 437 static int ibmveth_open(struct net_device *netdev)
 438 {
 439         struct ibmveth_adapter *adapter = netdev->priv;
 440         u64 mac_address = 0;
 441         int rxq_entries;
 442         unsigned long lpar_rc;
 443         int rc;
 444         union ibmveth_buf_desc rxq_desc;
 445
 446         ibmveth_debug_printk("open starting\n");
 447
 448         rxq_entries =
 449                 adapter->rx_buff_pool[0].size +
 450                 adapter->rx_buff_pool[1].size +
 451                 adapter->rx_buff_pool[2].size + 1;
 452
 453         adapter->buffer_list_addr = (void*) get_zeroed_page(GFP_KERNEL);
 454         adapter->filter_list_addr = (void*) get_zeroed_page(GFP_KERNEL);
 455
 456         if(!adapter->buffer_list_addr || !adapter->filter_list_addr) {
 457                 ibmveth_error_printk("unable to allocate filter or buffer list pages\n");
 458                 ibmveth_cleanup(adapter);
 459                 return -ENOMEM;
 460         }
 461
 462         adapter->rx_queue.queue_len = sizeof(struct ibmveth_rx_q_entry) * rxq_entries;
 463         adapter->rx_queue.queue_addr = kmalloc(adapter->rx_queue.queue_len, GFP_KERNEL);
 464
 465         if(!adapter->rx_queue.queue_addr) {
 466                 ibmveth_error_printk("unable to allocate rx queue pages\n");
 467                 ibmveth_cleanup(adapter);
 468                 return -ENOMEM;
 469         }
 470
 471         adapter->buffer_list_dma = vio_map_single(adapter->vdev, adapter->buffer_list_addr, 4096, DMA_BIDIRECTIONAL);
 472         adapter->filter_list_dma = vio_map_single(adapter->vdev, adapter->filter_list_addr, 4096, DMA_BIDIRECTIONAL);
 473         adapter->rx_queue.queue_dma = vio_map_single(adapter->vdev, adapter->rx_queue.queue_addr, adapter->rx_queue.queue_len, DMA_BIDIRECTIONAL);
 474
 475         if((dma_mapping_error(adapter->buffer_list_dma) ) ||
 476            (dma_mapping_error(adapter->filter_list_dma)) ||
 477            (dma_mapping_error(adapter->rx_queue.queue_dma))) {
 478                 ibmveth_error_printk("unable to map filter or buffer list pages\n");
 479                 ibmveth_cleanup(adapter);
 480                 return -ENOMEM;
 481         }
 482
 483         adapter->rx_queue.index = 0;
 484         adapter->rx_queue.num_slots = rxq_entries;
 485         adapter->rx_queue.toggle = 1;
 486
 487         if(ibmveth_alloc_buffer_pool(&adapter->rx_buff_pool[0]) ||
 488            ibmveth_alloc_buffer_pool(&adapter->rx_buff_pool[1]) ||
 489            ibmveth_alloc_buffer_pool(&adapter->rx_buff_pool[2]))
 490         {
 491                 ibmveth_error_printk("unable to allocate buffer pools\n");
 492                 ibmveth_cleanup(adapter);
 493                 return -ENOMEM;
 494         }
 495
 496         memcpy(&mac_address, netdev->dev_addr, netdev->addr_len);
 497         mac_address = mac_address >> 16;
 498
 499         rxq_desc.desc = 0;
 500         rxq_desc.fields.valid = 1;
 501         rxq_desc.fields.length = adapter->rx_queue.queue_len;
 502         rxq_desc.fields.address = adapter->rx_queue.queue_dma;
 503
 504         ibmveth_debug_printk("buffer list @ 0x%p\n", adapter->buffer_list_addr);
 505         ibmveth_debug_printk("filter list @ 0x%p\n", adapter->filter_list_addr);
 506         ibmveth_debug_printk("receive q   @ 0x%p\n", adapter->rx_queue.queue_addr);
 507
 508
 509         lpar_rc = h_register_logical_lan(adapter->vdev->unit_address,
 510                                          adapter->buffer_list_dma,
 511                                          rxq_desc.desc,
 512                                          adapter->filter_list_dma,
 513                                          mac_address);
 514
 515         if(lpar_rc != H_Success) {
 516                 ibmveth_error_printk("h_register_logical_lan failed with %ld\n", lpar_rc);
 517                 ibmveth_error_printk("buffer TCE:0x%x filter TCE:0x%x rxq desc:0x%lx MAC:0x%lx\n",
 518                                      adapter->buffer_list_dma,
 519                                      adapter->filter_list_dma,
 520                                      rxq_desc.desc,
 521                                      mac_address);
 522                 ibmveth_cleanup(adapter);
 523                 return -ENONET;
 524         }
 525
 526         ibmveth_debug_printk("registering irq 0x%x\n", netdev->irq);
 527         if((rc = request_irq(netdev->irq, &ibmveth_interrupt, 0, netdev->name, netdev)) != 0) {
 528                 ibmveth_error_printk("unable to request irq 0x%x, rc %d\n", netdev->irq, rc);
 529                 do {
 530                         rc = h_free_logical_lan(adapter->vdev->unit_address);
 531                 } while H_isLongBusy(rc);
 532
 533                 ibmveth_cleanup(adapter);
 534                 return rc;
 535         }
 536
 537         netif_start_queue(netdev);
 538
 539         ibmveth_debug_printk("scheduling initial replenish cycle\n");
 540         ibmveth_schedule_replenishing(adapter);
 541
 542         ibmveth_debug_printk("open complete\n");
 543
 544         return 0;
 545 }
 546
 547 static int ibmveth_close(struct net_device *netdev)
 548 {
 549         struct ibmveth_adapter *adapter = netdev->priv;
 550         long lpar_rc;
 551
 552         ibmveth_debug_printk("close starting\n");
 553
 554         netif_stop_queue(netdev);
 555
 556         free_irq(netdev->irq, netdev);
 557
 558         cancel_delayed_work(&adapter->replenish_task);
 559         flush_scheduled_work();
 560
 561         do {
 562                 lpar_rc = h_free_logical_lan(adapter->vdev->unit_address);
 563         } while H_isLongBusy(lpar_rc);
 564
 565         if(lpar_rc != H_Success)
 566         {
 567                 ibmveth_error_printk("h_free_logical_lan failed with %lx, continuing with close\n",
 568                                      lpar_rc);
 569         }
 570
 571         adapter->rx_no_buffer = *(u64*)(((char*)adapter->buffer_list_addr) + 4096 - 8);
 572
 573         ibmveth_cleanup(adapter);
 574
 575         ibmveth_debug_printk("close complete\n");
 576
 577         return 0;
 578 }
 579
 580 static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) {
 581         cmd->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE);
 582         cmd->advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg | ADVERTISED_FIBRE);
 583         cmd->speed = SPEED_1000;
 584         cmd->duplex = DUPLEX_FULL;
 585         cmd->port = PORT_FIBRE;
 586         cmd->phy_address = 0;
 587         cmd->transceiver = XCVR_INTERNAL;
 588         cmd->autoneg = AUTONEG_ENABLE;
 589         cmd->maxtxpkt = 0;
 590         cmd->maxrxpkt = 1;
 591         return 0;
 592 }
 593
 594 static void netdev_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info) {
 595         strncpy(info->driver, ibmveth_driver_name, sizeof(info->driver) - 1);
 596         strncpy(info->version, ibmveth_driver_version, sizeof(info->version) - 1);
 597 }
 598
 599 static u32 netdev_get_link(struct net_device *dev) {
 600         return 0;
 601 }
 602
 603 static struct ethtool_ops netdev_ethtool_ops = {
 604         .get_drvinfo            = netdev_get_drvinfo,
 605         .get_settings           = netdev_get_settings,
 606         .get_link               = netdev_get_link,
 607         .get_sg                 = ethtool_op_get_sg,
 608         .get_tx_csum            = ethtool_op_get_tx_csum,
 609 };
 610
 611 static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 612 {
 613         return -EOPNOTSUPP;
 614 }
 615
 616 #define page_offset(v) ((unsigned long)(v) & ((1 << 12) - 1))
 617
 618 static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *netdev)
 619 {
 620         struct ibmveth_adapter *adapter = netdev->priv;
 621         union ibmveth_buf_desc desc[IbmVethMaxSendFrags];
 622         unsigned long lpar_rc;
 623         int nfrags = 0, curfrag;
 624         unsigned long correlator;
 625         unsigned int retry_count;
 626
 627         if ((skb_shinfo(skb)->nr_frags + 1) > IbmVethMaxSendFrags) {
 628                 adapter->stats.tx_dropped++;
 629                 dev_kfree_skb(skb);
 630                 return 0;
 631         }
 632
 633         memset(&desc, 0, sizeof(desc));
 634
 635         /* nfrags = number of frags after the initial fragment */
 636         nfrags = skb_shinfo(skb)->nr_frags;
 637
 638         if(nfrags)
 639                 adapter->tx_multidesc_send++;
 640
 641         /* map the initial fragment */
 642         desc[0].fields.length  = nfrags ? skb->len - skb->data_len : skb->len;
 643         desc[0].fields.address = vio_map_single(adapter->vdev, skb->data,
 644                                         desc[0].fields.length, DMA_TO_DEVICE);
 645         desc[0].fields.valid   = 1;
 646
 647         if(dma_mapping_error(desc[0].fields.address)) {
 648                 ibmveth_error_printk("tx: unable to map initial fragment\n");
 649                 adapter->tx_map_failed++;
 650                 adapter->stats.tx_dropped++;
 651                 dev_kfree_skb(skb);
 652                 return 0;
 653         }
 654
 655         curfrag = nfrags;
 656
 657         /* map fragments past the initial portion if there are any */
 658         while(curfrag--) {
 659                 skb_frag_t *frag = &skb_shinfo(skb)->frags[curfrag];
 660                 desc[curfrag+1].fields.address
 661                         = vio_map_single(adapter->vdev,
 662                                 page_address(frag->page) + frag->page_offset,
 663                                 frag->size, DMA_TO_DEVICE);
 664                 desc[curfrag+1].fields.length = frag->size;
 665                 desc[curfrag+1].fields.valid  = 1;
 666
 667                 if(dma_mapping_error(desc[curfrag+1].fields.address)) {
 668                         ibmveth_error_printk("tx: unable to map fragment %d\n", curfrag);
 669                         adapter->tx_map_failed++;
 670                         adapter->stats.tx_dropped++;
 671                         /* Free all the mappings we just created */
 672                         while(curfrag < nfrags) {
 673                                 vio_unmap_single(adapter->vdev,
 674                                                  desc[curfrag+1].fields.address,
 675                                                  desc[curfrag+1].fields.length,
 676                                                  DMA_TO_DEVICE);
 677                                 curfrag++;
 678                         }
 679                         dev_kfree_skb(skb);
 680                         return 0;
 681                 }
 682         }
 683
 684         /* send the frame. Arbitrarily set retrycount to 1024 */
 685         correlator = 0;
 686         retry_count = 1024;
 687         do {
 688                 lpar_rc = h_send_logical_lan(adapter->vdev->unit_address,
 689                                              desc[0].desc,
 690                                              desc[1].desc,
 691                                              desc[2].desc,
 692                                              desc[3].desc,
 693                                              desc[4].desc,
 694                                              desc[5].desc,
 695                                              correlator);
 696         } while ((lpar_rc == H_Busy) && (retry_count--));
 697
 698         if(lpar_rc != H_Success && lpar_rc != H_Dropped) {
 699                 int i;
 700                 ibmveth_error_printk("tx: h_send_logical_lan failed with rc=%ld\n", lpar_rc);
 701                 for(i = 0; i < 6; i++) {
 702                         ibmveth_error_printk("tx: desc[%i] valid=%d, len=%d, address=0x%d\n", i,
 703                                              desc[i].fields.valid, desc[i].fields.length, desc[i].fields.address);
 704                 }
 705                 adapter->tx_send_failed++;
 706                 adapter->stats.tx_dropped++;
 707         } else {
 708                 adapter->stats.tx_packets++;
 709                 adapter->stats.tx_bytes += skb->len;
 710         }
 711
 712         do {
 713                 vio_unmap_single(adapter->vdev, desc[nfrags].fields.address, desc[nfrags].fields.length, DMA_TO_DEVICE);
 714         } while(--nfrags >= 0);
 715
 716         dev_kfree_skb(skb);
 717         return 0;
 718 }
 719
 720 static int ibmveth_poll(struct net_device *netdev, int *budget)
 721 {
 722         struct ibmveth_adapter *adapter = netdev->priv;
 723         int max_frames_to_process = netdev->quota;
 724         int frames_processed = 0;
 725         int more_work = 1;
 726         unsigned long lpar_rc;
 727
 728  restart_poll:
 729         do {
 730                 struct net_device *netdev = adapter->netdev;
 731
 732                 if(ibmveth_rxq_pending_buffer(adapter)) {
 733                         struct sk_buff *skb;
 734
 735                         if(!ibmveth_rxq_buffer_valid(adapter)) {
 736                                 wmb(); /* suggested by larson1 */
 737                                 adapter->rx_invalid_buffer++;
 738                                 ibmveth_debug_printk("recycling invalid buffer\n");
 739                                 ibmveth_rxq_recycle_buffer(adapter);
 740                         } else {
 741                                 int length = ibmveth_rxq_frame_length(adapter);
 742                                 int offset = ibmveth_rxq_frame_offset(adapter);
 743                                 skb = ibmveth_rxq_get_buffer(adapter);
 744
 745                                 ibmveth_rxq_harvest_buffer(adapter);
 746
 747                                 skb_reserve(skb, offset);
 748                                 skb_put(skb, length);
 749                                 skb->dev = netdev;
 750                                 skb->protocol = eth_type_trans(skb, netdev);
 751
 752                                 netif_receive_skb(skb); /* send it up */
 753
 754                                 adapter->stats.rx_packets++;
 755                                 adapter->stats.rx_bytes += length;
 756                                 frames_processed++;
 757                         }
 758                 } else {
 759                         more_work = 0;
 760                 }
 761         } while(more_work && (frames_processed < max_frames_to_process));
 762
 763         ibmveth_schedule_replenishing(adapter);
 764
 765         if(more_work) {
 766                 /* more work to do - return that we are not done yet */
 767                 netdev->quota -= frames_processed;
 768                 *budget -= frames_processed;
 769                 return 1;
 770         }
 771
 772         /* we think we are done - reenable interrupts, then check once more to make sure we are done */
 773         lpar_rc = h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_ENABLE);
 774
 775         ibmveth_assert(lpar_rc == H_Success);
 776
 777         netif_rx_complete(netdev);
 778
 779         if(ibmveth_rxq_pending_buffer(adapter) && netif_rx_reschedule(netdev, frames_processed))
 780         {
 781                 lpar_rc = h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE);
 782                 ibmveth_assert(lpar_rc == H_Success);
 783                 more_work = 1;
 784                 goto restart_poll;
 785         }
 786
 787         netdev->quota -= frames_processed;
 788         *budget -= frames_processed;
 789
 790         /* we really are done */
 791         return 0;
 792 }
 793
 794 static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance, struct pt_regs *regs)
 795 {
 796         struct net_device *netdev = dev_instance;
 797         struct ibmveth_adapter *adapter = netdev->priv;
 798         unsigned long lpar_rc;
 799
 800         if(netif_rx_schedule_prep(netdev)) {
 801                 lpar_rc = h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE);
 802                 ibmveth_assert(lpar_rc == H_Success);
 803                 __netif_rx_schedule(netdev);
 804         }
 805         return IRQ_HANDLED;
 806 }
 807
 808 static struct net_device_stats *ibmveth_get_stats(struct net_device *dev)
 809 {
 810         struct ibmveth_adapter *adapter = dev->priv;
 811         return &adapter->stats;
 812 }
 813
 814 static void ibmveth_set_multicast_list(struct net_device *netdev)
 815 {
 816         struct ibmveth_adapter *adapter = netdev->priv;
 817         unsigned long lpar_rc;
 818
 819         if((netdev->flags & IFF_PROMISC) || (netdev->mc_count > adapter->mcastFilterSize)) {
 820                 lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address,
 821                                            IbmVethMcastEnableRecv |
 822                                            IbmVethMcastDisableFiltering,
 823                                            0);
 824                 if(lpar_rc != H_Success) {
 825                         ibmveth_error_printk("h_multicast_ctrl rc=%ld when entering promisc mode\n", lpar_rc);
 826                 }
 827         } else {
 828                 struct dev_mc_list *mclist = netdev->mc_list;
 829                 int i;
 830                 /* clear the filter table & disable filtering */
 831                 lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address,
 832                                            IbmVethMcastEnableRecv |
 833                                            IbmVethMcastDisableFiltering |
 834                                            IbmVethMcastClearFilterTable,
 835                                            0);
 836                 if(lpar_rc != H_Success) {
 837                         ibmveth_error_printk("h_multicast_ctrl rc=%ld when attempting to clear filter table\n", lpar_rc);
 838                 }
 839                 /* add the addresses to the filter table */
 840                 for(i = 0; i < netdev->mc_count; ++i, mclist = mclist->next) {
 841                         // add the multicast address to the filter table
 842                         unsigned long mcast_addr = 0;
 843                         memcpy(((char *)&mcast_addr)+2, mclist->dmi_addr, 6);
 844                         lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address,
 845                                                    IbmVethMcastAddFilter,
 846                                                    mcast_addr);
 847                         if(lpar_rc != H_Success) {
 848                                 ibmveth_error_printk("h_multicast_ctrl rc=%ld when adding an entry to the filter table\n", lpar_rc);
 849                         }
 850                 }
 851
 852                 /* re-enable filtering */
 853                 lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address,
 854                                            IbmVethMcastEnableFiltering,
 855                                            0);
 856                 if(lpar_rc != H_Success) {
 857                         ibmveth_error_printk("h_multicast_ctrl rc=%ld when enabling filtering\n", lpar_rc);
 858                 }
 859         }
 860 }
 861
 862 static int ibmveth_change_mtu(struct net_device *dev, int new_mtu)
 863 {
 864         if ((new_mtu < 68) || (new_mtu > (1<<20)))
 865                 return -EINVAL;
 866         dev->mtu = new_mtu;
 867         return 0;
 868 }
 869
 870 static int __devinit ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id)
 871 {
 872         int rc;
 873         struct net_device *netdev;
 874         struct ibmveth_adapter *adapter;
 875
 876         unsigned char *mac_addr_p;
 877         unsigned int *mcastFilterSize_p;
 878
 879
 880         ibmveth_debug_printk_no_adapter("entering ibmveth_probe for UA 0x%x\n",
 881                                         dev->unit_address);
 882
 883         mac_addr_p = (unsigned char *) vio_get_attribute(dev, VETH_MAC_ADDR, 0);
 884         if(!mac_addr_p) {
 885                 ibmveth_error_printk("Can't find VETH_MAC_ADDR attribute\n");
 886                 return 0;
 887         }
 888
 889         mcastFilterSize_p= (unsigned int *) vio_get_attribute(dev, VETH_MCAST_FILTER_SIZE, 0);
 890         if(!mcastFilterSize_p) {
 891                 ibmveth_error_printk("Can't find VETH_MCAST_FILTER_SIZE attribute\n");
 892                 return 0;
 893         }
 894
 895         netdev = alloc_etherdev(sizeof(struct ibmveth_adapter));
 896
 897         if(!netdev)
 898                 return -ENOMEM;
 899
 900         SET_MODULE_OWNER(netdev);
 901
 902         adapter = netdev->priv;
 903         memset(adapter, 0, sizeof(adapter));
 904         dev->dev.driver_data = netdev;
 905
 906         adapter->vdev = dev;
 907         adapter->netdev = netdev;
 908         adapter->mcastFilterSize= *mcastFilterSize_p;
 909
 910         /*      Some older boxes running PHYP non-natively have an OF that
 911                 returns a 8-byte local-mac-address field (and the first
 912                 2 bytes have to be ignored) while newer boxes' OF return
 913                 a 6-byte field. Note that IEEE 1275 specifies that
 914                 local-mac-address must be a 6-byte field.
 915                 The RPA doc specifies that the first byte must be 10b, so
 916                 we'll just look for it to solve this 8 vs. 6 byte field issue */
 917
 918         if ((*mac_addr_p & 0x3) != 0x02)
 919                 mac_addr_p += 2;
 920
 921         adapter->mac_addr = 0;
 922         memcpy(&adapter->mac_addr, mac_addr_p, 6);
 923
 924         adapter->liobn = dev->iommu_table->it_index;
 925
 926         netdev->irq = dev->irq;
 927         netdev->open               = ibmveth_open;
 928         netdev->poll               = ibmveth_poll;
 929         netdev->weight             = 16;
 930         netdev->stop               = ibmveth_close;
 931         netdev->hard_start_xmit    = ibmveth_start_xmit;
 932         netdev->get_stats          = ibmveth_get_stats;
 933         netdev->set_multicast_list = ibmveth_set_multicast_list;
 934         netdev->do_ioctl           = ibmveth_ioctl;
 935         netdev->ethtool_ops           = &netdev_ethtool_ops;
 936         netdev->change_mtu         = ibmveth_change_mtu;
 937         SET_NETDEV_DEV(netdev, &dev->dev);
 938
 939         memcpy(&netdev->dev_addr, &adapter->mac_addr, netdev->addr_len);
 940
 941         ibmveth_init_buffer_pool(&adapter->rx_buff_pool[0], 0, IbmVethPool0DftCnt, IbmVethPool0DftSize);
 942         ibmveth_init_buffer_pool(&adapter->rx_buff_pool[1], 1, IbmVethPool1DftCnt, IbmVethPool1DftSize);
 943         ibmveth_init_buffer_pool(&adapter->rx_buff_pool[2], 2, IbmVethPool2DftCnt, IbmVethPool2DftSize);
 944
 945         ibmveth_debug_printk("adapter @ 0x%p\n", adapter);
 946
 947         INIT_WORK(&adapter->replenish_task, (void*)ibmveth_replenish_task, (void*)adapter);
 948
 949         adapter->buffer_list_dma = DMA_ERROR_CODE;
 950         adapter->filter_list_dma = DMA_ERROR_CODE;
 951         adapter->rx_queue.queue_dma = DMA_ERROR_CODE;
 952
 953         atomic_set(&adapter->not_replenishing, 1);
 954
 955         ibmveth_debug_printk("registering netdev...\n");
 956
 957         rc = register_netdev(netdev);
 958
 959         if(rc) {
 960                 ibmveth_debug_printk("failed to register netdev rc=%d\n", rc);
 961                 free_netdev(netdev);
 962                 return rc;
 963         }
 964
 965         ibmveth_debug_printk("registered\n");
 966
 967         ibmveth_proc_register_adapter(adapter);
 968
 969         return 0;
 970 }
 971
 972 static int __devexit ibmveth_remove(struct vio_dev *dev)
 973 {
 974         struct net_device *netdev = dev->dev.driver_data;
 975         struct ibmveth_adapter *adapter = netdev->priv;
 976
 977         unregister_netdev(netdev);
 978
 979         ibmveth_proc_unregister_adapter(adapter);
 980
 981         free_netdev(netdev);
 982         return 0;
 983 }
 984
 985 #ifdef CONFIG_PROC_FS
 986 static void ibmveth_proc_register_driver(void)
 987 {
 988         ibmveth_proc_dir = create_proc_entry(IBMVETH_PROC_DIR, S_IFDIR, proc_net);
 989         if (ibmveth_proc_dir) {
 990                 SET_MODULE_OWNER(ibmveth_proc_dir);
 991         }
 992 }
 993
 994 static void ibmveth_proc_unregister_driver(void)
 995 {
 996         remove_proc_entry(IBMVETH_PROC_DIR, proc_net);
 997 }
 998
 999 static void *ibmveth_seq_start(struct seq_file *seq, loff_t *pos)
1000 {
1001         if (*pos == 0) {
1002                 return (void *)1;
1003         } else {
1004                 return NULL;
1005         }
1006 }
1007
1008 static void *ibmveth_seq_next(struct seq_file *seq, void *v, loff_t *pos)
1009 {
1010         ++*pos;
1011         return NULL;
1012 }
1013
1014 static void ibmveth_seq_stop(struct seq_file *seq, void *v)
1015 {
1016 }
1017
1018 static int ibmveth_seq_show(struct seq_file *seq, void *v)
1019 {
1020         struct ibmveth_adapter *adapter = seq->private;
1021         char *current_mac = ((char*) &adapter->netdev->dev_addr);
1022         char *firmware_mac = ((char*) &adapter->mac_addr) ;
1023
1024         seq_printf(seq, "%s %s\n\n", ibmveth_driver_string, ibmveth_driver_version);
1025
1026         seq_printf(seq, "Unit Address:    0x%x\n", adapter->vdev->unit_address);
1027         seq_printf(seq, "LIOBN:           0x%lx\n", adapter->liobn);
1028         seq_printf(seq, "Current MAC:     %02X:%02X:%02X:%02X:%02X:%02X\n",
1029                    current_mac[0], current_mac[1], current_mac[2],
1030                    current_mac[3], current_mac[4], current_mac[5]);
1031         seq_printf(seq, "Firmware MAC:    %02X:%02X:%02X:%02X:%02X:%02X\n",
1032                    firmware_mac[0], firmware_mac[1], firmware_mac[2],
1033                    firmware_mac[3], firmware_mac[4], firmware_mac[5]);
1034
1035         seq_printf(seq, "\nAdapter Statistics:\n");
1036         seq_printf(seq, "  TX:  skbuffs linearized:          %ld\n", adapter->tx_linearized);
1037         seq_printf(seq, "       multi-descriptor sends:      %ld\n", adapter->tx_multidesc_send);
1038         seq_printf(seq, "       skb_linearize failures:      %ld\n", adapter->tx_linearize_failed);
1039         seq_printf(seq, "       vio_map_single failres:      %ld\n", adapter->tx_map_failed);
1040         seq_printf(seq, "       send failures:               %ld\n", adapter->tx_send_failed);
1041         seq_printf(seq, "  RX:  replenish task cycles:       %ld\n", adapter->replenish_task_cycles);
1042         seq_printf(seq, "       alloc_skb_failures:          %ld\n", adapter->replenish_no_mem);
1043         seq_printf(seq, "       add buffer failures:         %ld\n", adapter->replenish_add_buff_failure);
1044         seq_printf(seq, "       invalid buffers:             %ld\n", adapter->rx_invalid_buffer);
1045         seq_printf(seq, "       no buffers:                  %ld\n", adapter->rx_no_buffer);
1046
1047         return 0;
1048 }
1049 static struct seq_operations ibmveth_seq_ops = {
1050         .start = ibmveth_seq_start,
1051         .next  = ibmveth_seq_next,
1052         .stop  = ibmveth_seq_stop,
1053         .show  = ibmveth_seq_show,
1054 };
1055
1056 static int ibmveth_proc_open(struct inode *inode, struct file *file)
1057 {
1058         struct seq_file *seq;
1059         struct proc_dir_entry *proc;
1060         int rc;
1061
1062         rc = seq_open(file, &ibmveth_seq_ops);
1063         if (!rc) {
1064                 /* recover the pointer buried in proc_dir_entry data */
1065                 seq = file->private_data;
1066                 proc = PDE(inode);
1067                 seq->private = proc->data;
1068         }
1069         return rc;
1070 }
1071
1072 static struct file_operations ibmveth_proc_fops = {
1073         .owner   = THIS_MODULE,
1074         .open    = ibmveth_proc_open,
1075         .read    = seq_read,
1076         .llseek  = seq_lseek,
1077         .release = seq_release,
1078 };
1079
1080 static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter)
1081 {
1082         struct proc_dir_entry *entry;
1083         if (ibmveth_proc_dir) {
1084                 entry = create_proc_entry(adapter->netdev->name, S_IFREG, ibmveth_proc_dir);
1085                 if (!entry) {
1086                         ibmveth_error_printk("Cannot create adapter proc entry");
1087                 } else {
1088                         entry->data = (void *) adapter;
1089                         entry->proc_fops = &ibmveth_proc_fops;
1090                         SET_MODULE_OWNER(entry);
1091                 }
1092         }
1093         return;
1094 }
1095
1096 static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter)
1097 {
1098         if (ibmveth_proc_dir) {
1099                 remove_proc_entry(adapter->netdev->name, ibmveth_proc_dir);
1100         }
1101 }
1102
1103 #else /* CONFIG_PROC_FS */
1104 static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter)
1105 {
1106 }
1107
1108 static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter)
1109 {
1110 }
1111 static void ibmveth_proc_register_driver(void)
1112 {
1113 }
1114
1115 static void ibmveth_proc_unregister_driver(void)
1116 {
1117 }
1118 #endif /* CONFIG_PROC_FS */
1119
1120 static struct vio_device_id ibmveth_device_table[] __devinitdata= {
1121         { "network", "IBM,l-lan"},
1122         { 0,}
1123 };
1124
1125 MODULE_DEVICE_TABLE(vio, ibmveth_device_table);
1126
1127 static struct vio_driver ibmveth_driver = {
1128         .name        = (char *)ibmveth_driver_name,
1129         .id_table    = ibmveth_device_table,
1130         .probe       = ibmveth_probe,
1131         .remove      = ibmveth_remove
1132 };
1133
1134 static int __init ibmveth_module_init(void)
1135 {
1136         ibmveth_printk("%s: %s %s\n", ibmveth_driver_name, ibmveth_driver_string, ibmveth_driver_version);
1137
1138         ibmveth_proc_register_driver();
1139
1140         return vio_register_driver(&ibmveth_driver);
1141 }
1142
1143 static void __exit ibmveth_module_exit(void)
1144 {
1145         vio_unregister_driver(&ibmveth_driver);
1146         ibmveth_proc_unregister_driver();
1147 }
1148
1149 module_init(ibmveth_module_init);
1150 module_exit(ibmveth_module_exit);