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/proc_fs.h>
  59 #include <linux/seq_file.h>
  60
  61 #include "ibmveth.h"
  62
  63 #define DEBUG 1
  64
  65 #define ibmveth_printk(fmt, args...) \
  66   printk(KERN_INFO "%s: " fmt, __FILE__, ## args)
  67
  68 #define ibmveth_error_printk(fmt, args...) \
  69   printk(KERN_ERR "(%s:%3.3d ua:%x) ERROR: " fmt, __FILE__, __LINE__ , adapter->vdev->unit_address, ## args)
  70
  71 #ifdef DEBUG
  72 #define ibmveth_debug_printk_no_adapter(fmt, args...) \
  73   printk(KERN_DEBUG "(%s:%3.3d): " fmt, __FILE__, __LINE__ , ## args)
  74 #define ibmveth_debug_printk(fmt, args...) \
  75   printk(KERN_DEBUG "(%s:%3.3d ua:%x): " fmt, __FILE__, __LINE__ , adapter->vdev->unit_address, ## args)
  76 #define ibmveth_assert(expr) \
  77   if(!(expr)) {                                   \
  78     printk(KERN_DEBUG "assertion failed (%s:%3.3d ua:%x): %s\n", __FILE__, __LINE__, adapter->vdev->unit_address, #expr); \
  79     BUG(); \
  80   }
  81 #else
  82 #define ibmveth_debug_printk_no_adapter(fmt, args...)
  83 #define ibmveth_debug_printk(fmt, args...)
  84 #define ibmveth_assert(expr)
  85 #endif
  86
  87 static int ibmveth_open(struct net_device *dev);
  88 static int ibmveth_close(struct net_device *dev);
  89 static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
  90 static int ibmveth_poll(struct net_device *dev, int *budget);
  91 static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *dev);
  92 static struct net_device_stats *ibmveth_get_stats(struct net_device *dev);
  93 static void ibmveth_set_multicast_list(struct net_device *dev);
  94 static int ibmveth_change_mtu(struct net_device *dev, int new_mtu);
  95 static void ibmveth_proc_register_driver(void);
  96 static void ibmveth_proc_unregister_driver(void);
  97 static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter);
  98 static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter);
  99 static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance, struct pt_regs *regs);
 100
 101 #ifdef CONFIG_PROC_FS
 102 #define IBMVETH_PROC_DIR "ibmveth"
 103 static struct proc_dir_entry *ibmveth_proc_dir;
 104 #endif
 105
 106 static const char ibmveth_driver_name[] = "ibmveth";
 107 static const char ibmveth_driver_string[] = "IBM i/pSeries Virtual Ethernet Driver";
 108 static const char ibmveth_driver_version[] = "1.0";
 109
 110 MODULE_AUTHOR("Dave Larson <larson1@us.ibm.com>");
 111 MODULE_DESCRIPTION("IBM i/pSeries Virtual Ethernet Driver");
 112 MODULE_LICENSE("GPL");
 113
 114 /* simple methods of getting data from the current rxq entry */
 115 static inline int ibmveth_rxq_pending_buffer(struct ibmveth_adapter *adapter)
 116 {
 117         return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].toggle == adapter->rx_queue.toggle);
 118 }
 119
 120 static inline int ibmveth_rxq_buffer_valid(struct ibmveth_adapter *adapter)
 121 {
 122         return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].valid);
 123 }
 124
 125 static inline int ibmveth_rxq_frame_offset(struct ibmveth_adapter *adapter)
 126 {
 127         return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].offset);
 128 }
 129
 130 static inline int ibmveth_rxq_frame_length(struct ibmveth_adapter *adapter)
 131 {
 132         return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].length);
 133 }
 134
 135 /* setup the initial settings for a buffer pool */
 136 static void ibmveth_init_buffer_pool(struct ibmveth_buff_pool *pool, u32 pool_index, u32 pool_size, u32 buff_size)
 137 {
 138         pool->size = pool_size;
 139         pool->index = pool_index;
 140         pool->buff_size = buff_size;
 141         pool->threshold = pool_size / 2;
 142 }
 143
 144 /* allocate and setup an buffer pool - called during open */
 145 static int ibmveth_alloc_buffer_pool(struct ibmveth_buff_pool *pool)
 146 {
 147         int i;
 148
 149         pool->free_map = kmalloc(sizeof(u16) * pool->size, GFP_KERNEL);
 150
 151         if(!pool->free_map) {
 152                 return -1;
 153         }
 154
 155         pool->dma_addr = kmalloc(sizeof(dma_addr_t) * pool->size, GFP_KERNEL);
 156         if(!pool->dma_addr) {
 157                 kfree(pool->free_map);
 158                 pool->free_map = NULL;
 159                 return -1;
 160         }
 161
 162         pool->skbuff = kmalloc(sizeof(void*) * pool->size, GFP_KERNEL);
 163
 164         if(!pool->skbuff) {
 165                 kfree(pool->dma_addr);
 166                 pool->dma_addr = NULL;
 167
 168                 kfree(pool->free_map);
 169                 pool->free_map = NULL;
 170                 return -1;
 171         }
 172
 173         memset(pool->skbuff, 0, sizeof(void*) * pool->size);
 174         memset(pool->dma_addr, 0, sizeof(dma_addr_t) * pool->size);
 175
 176         for(i = 0; i < pool->size; ++i) {
 177                 pool->free_map[i] = i;
 178         }
 179
 180         atomic_set(&pool->available, 0);
 181         pool->producer_index = 0;
 182         pool->consumer_index = 0;
 183
 184         return 0;
 185 }
 186
 187 /* replenish the buffers for a pool.  note that we don't need to
 188  * skb_reserve these since they are used for incoming...
 189  */
 190 static void ibmveth_replenish_buffer_pool(struct ibmveth_adapter *adapter, struct ibmveth_buff_pool *pool)
 191 {
 192         u32 i;
 193         u32 count = pool->size - atomic_read(&pool->available);
 194         u32 buffers_added = 0;
 195
 196         mb();
 197
 198         for(i = 0; i < count; ++i) {
 199                 struct sk_buff *skb;
 200                 unsigned int free_index, index;
 201                 u64 correlator;
 202                 union ibmveth_buf_desc desc;
 203                 unsigned long lpar_rc;
 204                 dma_addr_t dma_addr;
 205
 206                 skb = alloc_skb(pool->buff_size, GFP_ATOMIC);
 207
 208                 if(!skb) {
 209                         ibmveth_debug_printk("replenish: unable to allocate skb\n");
 210                         adapter->replenish_no_mem++;
 211                         break;
 212                 }
 213
 214                 free_index = pool->consumer_index++ % pool->size;
 215                 index = pool->free_map[free_index];
 216
 217                 ibmveth_assert(index != 0xffff);
 218                 ibmveth_assert(pool->skbuff[index] == NULL);
 219
 220                 dma_addr = vio_map_single(adapter->vdev, skb->data, pool->buff_size, DMA_FROM_DEVICE);
 221
 222                 pool->dma_addr[index] = dma_addr;
 223                 pool->skbuff[index] = skb;
 224
 225                 correlator = ((u64)pool->index << 32) | index;
 226                 *(u64*)skb->data = correlator;
 227
 228                 desc.desc = 0;
 229                 desc.fields.valid = 1;
 230                 desc.fields.length = pool->buff_size;
 231                 desc.fields.address = dma_addr;
 232
 233                 lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc);
 234
 235                 if(lpar_rc != H_Success) {
 236                         pool->skbuff[index] = NULL;
 237                         pool->consumer_index--;
 238                         vio_unmap_single(adapter->vdev, pool->dma_addr[index], pool->buff_size, DMA_FROM_DEVICE);
 239                         dev_kfree_skb_any(skb);
 240                         adapter->replenish_add_buff_failure++;
 241                         break;
 242                 } else {
 243                         pool->free_map[free_index] = 0xffff;
 244                         buffers_added++;
 245                         adapter->replenish_add_buff_success++;
 246                 }
 247         }
 248
 249         mb();
 250         atomic_add(buffers_added, &(pool->available));
 251 }
 252
 253 /* check if replenishing is needed.  */
 254 static inline int ibmveth_is_replenishing_needed(struct ibmveth_adapter *adapter)
 255 {
 256         return ((atomic_read(&adapter->rx_buff_pool[0].available) < adapter->rx_buff_pool[0].threshold) ||
 257                 (atomic_read(&adapter->rx_buff_pool[1].available) < adapter->rx_buff_pool[1].threshold) ||
 258                 (atomic_read(&adapter->rx_buff_pool[2].available) < adapter->rx_buff_pool[2].threshold));
 259 }
 260
 261 /* replenish tasklet routine */
 262 static void ibmveth_replenish_task(struct ibmveth_adapter *adapter)
 263 {
 264         adapter->replenish_task_cycles++;
 265
 266         ibmveth_replenish_buffer_pool(adapter, &adapter->rx_buff_pool[0]);
 267         ibmveth_replenish_buffer_pool(adapter, &adapter->rx_buff_pool[1]);
 268         ibmveth_replenish_buffer_pool(adapter, &adapter->rx_buff_pool[2]);
 269
 270         adapter->rx_no_buffer = *(u64*)(((char*)adapter->buffer_list_addr) + 4096 - 8);
 271
 272         atomic_inc(&adapter->not_replenishing);
 273         ibmveth_assert(atomic_read(&adapter->not_replenishing) == 1);
 274 }
 275
 276 /* kick the replenish tasklet if we need replenishing and it isn't already running */
 277 static inline void ibmveth_schedule_replenishing(struct ibmveth_adapter *adapter)
 278 {
 279         if(ibmveth_is_replenishing_needed(adapter) &&
 280            (atomic_dec_if_positive(&adapter->not_replenishing) == 0)) {
 281                 schedule_work(&adapter->replenish_task);
 282         }
 283 }
 284
 285 /* empty and free ana buffer pool - also used to do cleanup in error paths */
 286 static void ibmveth_free_buffer_pool(struct ibmveth_adapter *adapter, struct ibmveth_buff_pool *pool)
 287 {
 288         int i;
 289
 290         if(pool->free_map) {
 291                 kfree(pool->free_map);
 292                 pool->free_map  = NULL;
 293         }
 294
 295         if(pool->skbuff && pool->dma_addr) {
 296                 for(i = 0; i < pool->size; ++i) {
 297                         struct sk_buff *skb = pool->skbuff[i];
 298                         if(skb) {
 299                                 vio_unmap_single(adapter->vdev,
 300                                                  pool->dma_addr[i],
 301                                                  pool->buff_size,
 302                                                  DMA_FROM_DEVICE);
 303                                 dev_kfree_skb_any(skb);
 304                                 pool->skbuff[i] = NULL;
 305                         }
 306                 }
 307         }
 308
 309         if(pool->dma_addr) {
 310                 kfree(pool->dma_addr);
 311                 pool->dma_addr = NULL;
 312         }
 313
 314         if(pool->skbuff) {
 315                 kfree(pool->skbuff);
 316                 pool->skbuff = NULL;
 317         }
 318 }
 319
 320 /* remove a buffer from a pool */
 321 static void ibmveth_remove_buffer_from_pool(struct ibmveth_adapter *adapter, u64 correlator)
 322 {
 323         unsigned int pool  = correlator >> 32;
 324         unsigned int index = correlator & 0xffffffffUL;
 325         unsigned int free_index;
 326         struct sk_buff *skb;
 327
 328         ibmveth_assert(pool < IbmVethNumBufferPools);
 329         ibmveth_assert(index < adapter->rx_buff_pool[pool].size);
 330
 331         skb = adapter->rx_buff_pool[pool].skbuff[index];
 332
 333         ibmveth_assert(skb != NULL);
 334
 335         adapter->rx_buff_pool[pool].skbuff[index] = NULL;
 336
 337         vio_unmap_single(adapter->vdev,
 338                          adapter->rx_buff_pool[pool].dma_addr[index],
 339                          adapter->rx_buff_pool[pool].buff_size,
 340                          DMA_FROM_DEVICE);
 341
 342         free_index = adapter->rx_buff_pool[pool].producer_index++ % adapter->rx_buff_pool[pool].size;
 343         adapter->rx_buff_pool[pool].free_map[free_index] = index;
 344
 345         mb();
 346
 347         atomic_dec(&(adapter->rx_buff_pool[pool].available));
 348 }
 349
 350 /* get the current buffer on the rx queue */
 351 static inline struct sk_buff *ibmveth_rxq_get_buffer(struct ibmveth_adapter *adapter)
 352 {
 353         u64 correlator = adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator;
 354         unsigned int pool = correlator >> 32;
 355         unsigned int index = correlator & 0xffffffffUL;
 356
 357         ibmveth_assert(pool < IbmVethNumBufferPools);
 358         ibmveth_assert(index < adapter->rx_buff_pool[pool].size);
 359
 360         return adapter->rx_buff_pool[pool].skbuff[index];
 361 }
 362
 363 /* recycle the current buffer on the rx queue */
 364 static void ibmveth_rxq_recycle_buffer(struct ibmveth_adapter *adapter)
 365 {
 366         u32 q_index = adapter->rx_queue.index;
 367         u64 correlator = adapter->rx_queue.queue_addr[q_index].correlator;
 368         unsigned int pool = correlator >> 32;
 369         unsigned int index = correlator & 0xffffffffUL;
 370         union ibmveth_buf_desc desc;
 371         unsigned long lpar_rc;
 372
 373         ibmveth_assert(pool < IbmVethNumBufferPools);
 374         ibmveth_assert(index < adapter->rx_buff_pool[pool].size);
 375
 376         desc.desc = 0;
 377         desc.fields.valid = 1;
 378         desc.fields.length = adapter->rx_buff_pool[pool].buff_size;
 379         desc.fields.address = adapter->rx_buff_pool[pool].dma_addr[index];
 380
 381         lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc);
 382
 383         if(lpar_rc != H_Success) {
 384                 ibmveth_debug_printk("h_add_logical_lan_buffer failed during recycle rc=%ld", lpar_rc);
 385                 ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator);
 386         }
 387
 388         if(++adapter->rx_queue.index == adapter->rx_queue.num_slots) {
 389                 adapter->rx_queue.index = 0;
 390                 adapter->rx_queue.toggle = !adapter->rx_queue.toggle;
 391         }
 392 }
 393
 394 static inline void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter)
 395 {
 396         ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator);
 397
 398         if(++adapter->rx_queue.index == adapter->rx_queue.num_slots) {
 399                 adapter->rx_queue.index = 0;
 400                 adapter->rx_queue.toggle = !adapter->rx_queue.toggle;
 401         }
 402 }
 403
 404 static void ibmveth_cleanup(struct ibmveth_adapter *adapter)
 405 {
 406         if(adapter->buffer_list_addr != NULL) {
 407                 if(!dma_mapping_error(adapter->buffer_list_dma)) {
 408                         vio_unmap_single(adapter->vdev, adapter->buffer_list_dma, 4096, DMA_BIDIRECTIONAL);
 409                         adapter->buffer_list_dma = DMA_ERROR_CODE;
 410                 }
 411                 free_page((unsigned long)adapter->buffer_list_addr);
 412                 adapter->buffer_list_addr = NULL;
 413         }
 414
 415         if(adapter->filter_list_addr != NULL) {
 416                 if(!dma_mapping_error(adapter->filter_list_dma)) {
 417                         vio_unmap_single(adapter->vdev, adapter->filter_list_dma, 4096, DMA_BIDIRECTIONAL);
 418                         adapter->filter_list_dma = DMA_ERROR_CODE;
 419                 }
 420                 free_page((unsigned long)adapter->filter_list_addr);
 421                 adapter->filter_list_addr = NULL;
 422         }
 423
 424         if(adapter->rx_queue.queue_addr != NULL) {
 425                 if(!dma_mapping_error(adapter->rx_queue.queue_dma)) {
 426                         vio_unmap_single(adapter->vdev, adapter->rx_queue.queue_dma, adapter->rx_queue.queue_len, DMA_BIDIRECTIONAL);
 427                         adapter->rx_queue.queue_dma = DMA_ERROR_CODE;
 428                 }
 429                 kfree(adapter->rx_queue.queue_addr);
 430                 adapter->rx_queue.queue_addr = NULL;
 431         }
 432
 433         ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[0]);
 434         ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[1]);
 435         ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[2]);
 436 }
 437
 438 static int ibmveth_open(struct net_device *netdev)
 439 {
 440         struct ibmveth_adapter *adapter = netdev->priv;
 441         u64 mac_address = 0;
 442         int rxq_entries;
 443         unsigned long lpar_rc;
 444         int rc;
 445         union ibmveth_buf_desc rxq_desc;
 446
 447         ibmveth_debug_printk("open starting\n");
 448
 449         rxq_entries =
 450                 adapter->rx_buff_pool[0].size +
 451                 adapter->rx_buff_pool[1].size +
 452                 adapter->rx_buff_pool[2].size + 1;
 453
 454         adapter->buffer_list_addr = (void*) get_zeroed_page(GFP_KERNEL);
 455         adapter->filter_list_addr = (void*) get_zeroed_page(GFP_KERNEL);
 456
 457         if(!adapter->buffer_list_addr || !adapter->filter_list_addr) {
 458                 ibmveth_error_printk("unable to allocate filter or buffer list pages\n");
 459                 ibmveth_cleanup(adapter);
 460                 return -ENOMEM;
 461         }
 462
 463         adapter->rx_queue.queue_len = sizeof(struct ibmveth_rx_q_entry) * rxq_entries;
 464         adapter->rx_queue.queue_addr = kmalloc(adapter->rx_queue.queue_len, GFP_KERNEL);
 465
 466         if(!adapter->rx_queue.queue_addr) {
 467                 ibmveth_error_printk("unable to allocate rx queue pages\n");
 468                 ibmveth_cleanup(adapter);
 469                 return -ENOMEM;
 470         }
 471
 472         adapter->buffer_list_dma = vio_map_single(adapter->vdev, adapter->buffer_list_addr, 4096, DMA_BIDIRECTIONAL);
 473         adapter->filter_list_dma = vio_map_single(adapter->vdev, adapter->filter_list_addr, 4096, DMA_BIDIRECTIONAL);
 474         adapter->rx_queue.queue_dma = vio_map_single(adapter->vdev, adapter->rx_queue.queue_addr, adapter->rx_queue.queue_len, DMA_BIDIRECTIONAL);
 475
 476         if((dma_mapping_error(adapter->buffer_list_dma) ) ||
 477            (dma_mapping_error(adapter->filter_list_dma)) ||
 478            (dma_mapping_error(adapter->rx_queue.queue_dma))) {
 479                 ibmveth_error_printk("unable to map filter or buffer list pages\n");
 480                 ibmveth_cleanup(adapter);
 481                 return -ENOMEM;
 482         }
 483
 484         adapter->rx_queue.index = 0;
 485         adapter->rx_queue.num_slots = rxq_entries;
 486         adapter->rx_queue.toggle = 1;
 487
 488         if(ibmveth_alloc_buffer_pool(&adapter->rx_buff_pool[0]) ||
 489            ibmveth_alloc_buffer_pool(&adapter->rx_buff_pool[1]) ||
 490            ibmveth_alloc_buffer_pool(&adapter->rx_buff_pool[2]))
 491         {
 492                 ibmveth_error_printk("unable to allocate buffer pools\n");
 493                 ibmveth_cleanup(adapter);
 494                 return -ENOMEM;
 495         }
 496
 497         memcpy(&mac_address, netdev->dev_addr, netdev->addr_len);
 498         mac_address = mac_address >> 16;
 499
 500         rxq_desc.desc = 0;
 501         rxq_desc.fields.valid = 1;
 502         rxq_desc.fields.length = adapter->rx_queue.queue_len;
 503         rxq_desc.fields.address = adapter->rx_queue.queue_dma;
 504
 505         ibmveth_debug_printk("buffer list @ 0x%p\n", adapter->buffer_list_addr);
 506         ibmveth_debug_printk("filter list @ 0x%p\n", adapter->filter_list_addr);
 507         ibmveth_debug_printk("receive q   @ 0x%p\n", adapter->rx_queue.queue_addr);
 508
 509
 510         lpar_rc = h_register_logical_lan(adapter->vdev->unit_address,
 511                                          adapter->buffer_list_dma,
 512                                          rxq_desc.desc,
 513                                          adapter->filter_list_dma,
 514                                          mac_address);
 515
 516         if(lpar_rc != H_Success) {
 517                 ibmveth_error_printk("h_register_logical_lan failed with %ld\n", lpar_rc);
 518                 ibmveth_error_printk("buffer TCE:0x%x filter TCE:0x%x rxq desc:0x%lx MAC:0x%lx\n",
 519                                      adapter->buffer_list_dma,
 520                                      adapter->filter_list_dma,
 521                                      rxq_desc.desc,
 522                                      mac_address);
 523                 ibmveth_cleanup(adapter);
 524                 return -ENONET;
 525         }
 526
 527         ibmveth_debug_printk("registering irq 0x%x\n", netdev->irq);
 528         if((rc = request_irq(netdev->irq, &ibmveth_interrupt, 0, netdev->name, netdev)) != 0) {
 529                 ibmveth_error_printk("unable to request irq 0x%x, rc %d\n", netdev->irq, rc);
 530                 do {
 531                         rc = h_free_logical_lan(adapter->vdev->unit_address);
 532                 } while H_isLongBusy(rc);
 533
 534                 ibmveth_cleanup(adapter);
 535                 return rc;
 536         }
 537
 538         netif_start_queue(netdev);
 539
 540         ibmveth_debug_printk("scheduling initial replenish cycle\n");
 541         ibmveth_schedule_replenishing(adapter);
 542
 543         ibmveth_debug_printk("open complete\n");
 544
 545         return 0;
 546 }
 547
 548 static int ibmveth_close(struct net_device *netdev)
 549 {
 550         struct ibmveth_adapter *adapter = netdev->priv;
 551         long lpar_rc;
 552
 553         ibmveth_debug_printk("close starting\n");
 554
 555         netif_stop_queue(netdev);
 556
 557         free_irq(netdev->irq, netdev);
 558
 559         cancel_delayed_work(&adapter->replenish_task);
 560         flush_scheduled_work();
 561
 562         do {
 563                 lpar_rc = h_free_logical_lan(adapter->vdev->unit_address);
 564         } while H_isLongBusy(lpar_rc);
 565
 566         if(lpar_rc != H_Success)
 567         {
 568                 ibmveth_error_printk("h_free_logical_lan failed with %lx, continuing with close\n",
 569                                      lpar_rc);
 570         }
 571
 572         adapter->rx_no_buffer = *(u64*)(((char*)adapter->buffer_list_addr) + 4096 - 8);
 573
 574         ibmveth_cleanup(adapter);
 575
 576         ibmveth_debug_printk("close complete\n");
 577
 578         return 0;
 579 }
 580
 581 static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) {
 582         cmd->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE);
 583         cmd->advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg | ADVERTISED_FIBRE);
 584         cmd->speed = SPEED_1000;
 585         cmd->duplex = DUPLEX_FULL;
 586         cmd->port = PORT_FIBRE;
 587         cmd->phy_address = 0;
 588         cmd->transceiver = XCVR_INTERNAL;
 589         cmd->autoneg = AUTONEG_ENABLE;
 590         cmd->maxtxpkt = 0;
 591         cmd->maxrxpkt = 1;
 592         return 0;
 593 }
 594
 595 static void netdev_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info) {
 596         strncpy(info->driver, ibmveth_driver_name, sizeof(info->driver) - 1);
 597         strncpy(info->version, ibmveth_driver_version, sizeof(info->version) - 1);
 598 }
 599
 600 static u32 netdev_get_link(struct net_device *dev) {
 601         return 0;
 602 }
 603
 604 static struct ethtool_ops netdev_ethtool_ops = {
 605         .get_drvinfo            = netdev_get_drvinfo,
 606         .get_settings           = netdev_get_settings,
 607         .get_link               = netdev_get_link,
 608         .get_sg                 = ethtool_op_get_sg,
 609         .get_tx_csum            = ethtool_op_get_tx_csum,
 610 };
 611
 612 static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 613 {
 614         return -EOPNOTSUPP;
 615 }
 616
 617 #define page_offset(v) ((unsigned long)(v) & ((1 << 12) - 1))
 618
 619 static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *netdev)
 620 {
 621         struct ibmveth_adapter *adapter = netdev->priv;
 622         union ibmveth_buf_desc desc[IbmVethMaxSendFrags];
 623         unsigned long lpar_rc;
 624         int nfrags = 0, curfrag;
 625         unsigned long correlator;
 626         unsigned int retry_count;
 627
 628         if ((skb_shinfo(skb)->nr_frags + 1) > IbmVethMaxSendFrags) {
 629                 adapter->stats.tx_dropped++;
 630                 dev_kfree_skb(skb);
 631                 return 0;
 632         }
 633
 634         memset(&desc, 0, sizeof(desc));
 635
 636         /* nfrags = number of frags after the initial fragment */
 637         nfrags = skb_shinfo(skb)->nr_frags;
 638
 639         if(nfrags)
 640                 adapter->tx_multidesc_send++;
 641
 642         /* map the initial fragment */
 643         desc[0].fields.length  = nfrags ? skb->len - skb->data_len : skb->len;
 644         desc[0].fields.address = vio_map_single(adapter->vdev, skb->data,
 645                                         desc[0].fields.length, DMA_TO_DEVICE);
 646         desc[0].fields.valid   = 1;
 647
 648         if(dma_mapping_error(desc[0].fields.address)) {
 649                 ibmveth_error_printk("tx: unable to map initial fragment\n");
 650                 adapter->tx_map_failed++;
 651                 adapter->stats.tx_dropped++;
 652                 dev_kfree_skb(skb);
 653                 return 0;
 654         }
 655
 656         curfrag = nfrags;
 657
 658         /* map fragments past the initial portion if there are any */
 659         while(curfrag--) {
 660                 skb_frag_t *frag = &skb_shinfo(skb)->frags[curfrag];
 661                 desc[curfrag+1].fields.address
 662                         = vio_map_single(adapter->vdev,
 663                                 page_address(frag->page) + frag->page_offset,
 664                                 frag->size, DMA_TO_DEVICE);
 665                 desc[curfrag+1].fields.length = frag->size;
 666                 desc[curfrag+1].fields.valid  = 1;
 667
 668                 if(dma_mapping_error(desc[curfrag+1].fields.address)) {
 669                         ibmveth_error_printk("tx: unable to map fragment %d\n", curfrag);
 670                         adapter->tx_map_failed++;
 671                         adapter->stats.tx_dropped++;
 672                         /* Free all the mappings we just created */
 673                         while(curfrag < nfrags) {
 674                                 vio_unmap_single(adapter->vdev,
 675                                                  desc[curfrag+1].fields.address,
 676                                                  desc[curfrag+1].fields.length,
 677                                                  DMA_TO_DEVICE);
 678                                 curfrag++;
 679                         }
 680                         dev_kfree_skb(skb);
 681                         return 0;
 682                 }
 683         }
 684
 685         /* send the frame. Arbitrarily set retrycount to 1024 */
 686         correlator = 0;
 687         retry_count = 1024;
 688         do {
 689                 lpar_rc = h_send_logical_lan(adapter->vdev->unit_address,
 690                                              desc[0].desc,
 691                                              desc[1].desc,
 692                                              desc[2].desc,
 693                                              desc[3].desc,
 694                                              desc[4].desc,
 695                                              desc[5].desc,
 696                                              correlator);
 697         } while ((lpar_rc == H_Busy) && (retry_count--));
 698
 699         if(lpar_rc != H_Success && lpar_rc != H_Dropped) {
 700                 int i;
 701                 ibmveth_error_printk("tx: h_send_logical_lan failed with rc=%ld\n", lpar_rc);
 702                 for(i = 0; i < 6; i++) {
 703                         ibmveth_error_printk("tx: desc[%i] valid=%d, len=%d, address=0x%d\n", i,
 704                                              desc[i].fields.valid, desc[i].fields.length, desc[i].fields.address);
 705                 }
 706                 adapter->tx_send_failed++;
 707                 adapter->stats.tx_dropped++;
 708         } else {
 709                 adapter->stats.tx_packets++;
 710                 adapter->stats.tx_bytes += skb->len;
 711         }
 712
 713         do {
 714                 vio_unmap_single(adapter->vdev, desc[nfrags].fields.address, desc[nfrags].fields.length, DMA_TO_DEVICE);
 715         } while(--nfrags >= 0);
 716
 717         dev_kfree_skb(skb);
 718         return 0;
 719 }
 720
 721 static int ibmveth_poll(struct net_device *netdev, int *budget)
 722 {
 723         struct ibmveth_adapter *adapter = netdev->priv;
 724         int max_frames_to_process = netdev->quota;
 725         int frames_processed = 0;
 726         int more_work = 1;
 727         unsigned long lpar_rc;
 728
 729  restart_poll:
 730         do {
 731                 struct net_device *netdev = adapter->netdev;
 732
 733                 if(ibmveth_rxq_pending_buffer(adapter)) {
 734                         struct sk_buff *skb;
 735
 736                         if(!ibmveth_rxq_buffer_valid(adapter)) {
 737                                 wmb(); /* suggested by larson1 */
 738                                 adapter->rx_invalid_buffer++;
 739                                 ibmveth_debug_printk("recycling invalid buffer\n");
 740                                 ibmveth_rxq_recycle_buffer(adapter);
 741                         } else {
 742                                 int length = ibmveth_rxq_frame_length(adapter);
 743                                 int offset = ibmveth_rxq_frame_offset(adapter);
 744                                 skb = ibmveth_rxq_get_buffer(adapter);
 745
 746                                 ibmveth_rxq_harvest_buffer(adapter);
 747
 748                                 skb_reserve(skb, offset);
 749                                 skb_put(skb, length);
 750                                 skb->dev = netdev;
 751                                 skb->protocol = eth_type_trans(skb, netdev);
 752
 753                                 netif_receive_skb(skb); /* send it up */
 754
 755                                 adapter->stats.rx_packets++;
 756                                 adapter->stats.rx_bytes += length;
 757                                 frames_processed++;
 758                         }
 759                 } else {
 760                         more_work = 0;
 761                 }
 762         } while(more_work && (frames_processed < max_frames_to_process));
 763
 764         ibmveth_schedule_replenishing(adapter);
 765
 766         if(more_work) {
 767                 /* more work to do - return that we are not done yet */
 768                 netdev->quota -= frames_processed;
 769                 *budget -= frames_processed;
 770                 return 1;
 771         }
 772
 773         /* we think we are done - reenable interrupts, then check once more to make sure we are done */
 774         lpar_rc = h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_ENABLE);
 775
 776         ibmveth_assert(lpar_rc == H_Success);
 777
 778         netif_rx_complete(netdev);
 779
 780         if(ibmveth_rxq_pending_buffer(adapter) && netif_rx_reschedule(netdev, frames_processed))
 781         {
 782                 lpar_rc = h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE);
 783                 ibmveth_assert(lpar_rc == H_Success);
 784                 more_work = 1;
 785                 goto restart_poll;
 786         }
 787
 788         netdev->quota -= frames_processed;
 789         *budget -= frames_processed;
 790
 791         /* we really are done */
 792         return 0;
 793 }
 794
 795 static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance, struct pt_regs *regs)
 796 {
 797         struct net_device *netdev = dev_instance;
 798         struct ibmveth_adapter *adapter = netdev->priv;
 799         unsigned long lpar_rc;
 800
 801         if(netif_rx_schedule_prep(netdev)) {
 802                 lpar_rc = h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE);
 803                 ibmveth_assert(lpar_rc == H_Success);
 804                 __netif_rx_schedule(netdev);
 805         }
 806         return IRQ_HANDLED;
 807 }
 808
 809 static struct net_device_stats *ibmveth_get_stats(struct net_device *dev)
 810 {
 811         struct ibmveth_adapter *adapter = dev->priv;
 812         return &adapter->stats;
 813 }
 814
 815 static void ibmveth_set_multicast_list(struct net_device *netdev)
 816 {
 817         struct ibmveth_adapter *adapter = netdev->priv;
 818         unsigned long lpar_rc;
 819
 820         if((netdev->flags & IFF_PROMISC) || (netdev->mc_count > adapter->mcastFilterSize)) {
 821                 lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address,
 822                                            IbmVethMcastEnableRecv |
 823                                            IbmVethMcastDisableFiltering,
 824                                            0);
 825                 if(lpar_rc != H_Success) {
 826                         ibmveth_error_printk("h_multicast_ctrl rc=%ld when entering promisc mode\n", lpar_rc);
 827                 }
 828         } else {
 829                 struct dev_mc_list *mclist = netdev->mc_list;
 830                 int i;
 831                 /* clear the filter table & disable filtering */
 832                 lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address,
 833                                            IbmVethMcastEnableRecv |
 834                                            IbmVethMcastDisableFiltering |
 835                                            IbmVethMcastClearFilterTable,
 836                                            0);
 837                 if(lpar_rc != H_Success) {
 838                         ibmveth_error_printk("h_multicast_ctrl rc=%ld when attempting to clear filter table\n", lpar_rc);
 839                 }
 840                 /* add the addresses to the filter table */
 841                 for(i = 0; i < netdev->mc_count; ++i, mclist = mclist->next) {
 842                         // add the multicast address to the filter table
 843                         unsigned long mcast_addr = 0;
 844                         memcpy(((char *)&mcast_addr)+2, mclist->dmi_addr, 6);
 845                         lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address,
 846                                                    IbmVethMcastAddFilter,
 847                                                    mcast_addr);
 848                         if(lpar_rc != H_Success) {
 849                                 ibmveth_error_printk("h_multicast_ctrl rc=%ld when adding an entry to the filter table\n", lpar_rc);
 850                         }
 851                 }
 852
 853                 /* re-enable filtering */
 854                 lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address,
 855                                            IbmVethMcastEnableFiltering,
 856                                            0);
 857                 if(lpar_rc != H_Success) {
 858                         ibmveth_error_printk("h_multicast_ctrl rc=%ld when enabling filtering\n", lpar_rc);
 859                 }
 860         }
 861 }
 862
 863 static int ibmveth_change_mtu(struct net_device *dev, int new_mtu)
 864 {
 865         if ((new_mtu < 68) || (new_mtu > (1<<20)))
 866                 return -EINVAL;
 867         dev->mtu = new_mtu;
 868         return 0;
 869 }
 870
 871 static int __devinit ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id)
 872 {
 873         int rc;
 874         struct net_device *netdev;
 875         struct ibmveth_adapter *adapter;
 876
 877         unsigned int *mac_addr_p;
 878         unsigned int *mcastFilterSize_p;
 879
 880
 881         ibmveth_debug_printk_no_adapter("entering ibmveth_probe for UA 0x%x\n",
 882                                         dev->unit_address);
 883
 884         mac_addr_p = (unsigned int *) vio_get_attribute(dev, VETH_MAC_ADDR, 0);
 885         if(!mac_addr_p) {
 886                 ibmveth_error_printk("Can't find VETH_MAC_ADDR attribute\n");
 887                 return 0;
 888         }
 889
 890         mcastFilterSize_p= (unsigned int *) vio_get_attribute(dev, VETH_MCAST_FILTER_SIZE, 0);
 891         if(!mcastFilterSize_p) {
 892                 ibmveth_error_printk("Can't find VETH_MCAST_FILTER_SIZE attribute\n");
 893                 return 0;
 894         }
 895
 896         netdev = alloc_etherdev(sizeof(struct ibmveth_adapter));
 897
 898         if(!netdev)
 899                 return -ENOMEM;
 900
 901         SET_MODULE_OWNER(netdev);
 902
 903         adapter = netdev->priv;
 904         memset(adapter, 0, sizeof(adapter));
 905         dev->driver_data = netdev;
 906
 907         adapter->vdev = dev;
 908         adapter->netdev = netdev;
 909         adapter->mcastFilterSize= *mcastFilterSize_p;
 910
 911         /*      Some older boxes running PHYP non-natively have an OF that
 912                 returns a 8-byte local-mac-address field (and the first
 913                 2 bytes have to be ignored) while newer boxes' OF return
 914                 a 6-byte field. Note that IEEE 1275 specifies that
 915                 local-mac-address must be a 6-byte field.
 916                 The RPA doc specifies that the first byte must be 10b, so
 917                 we'll just look for it to solve this 8 vs. 6 byte field issue */
 918
 919         while (*((char*)mac_addr_p) != (char)(0x02))
 920                 ((char*)mac_addr_p)++;
 921
 922         adapter->mac_addr = 0;
 923         memcpy(&adapter->mac_addr, mac_addr_p, 6);
 924
 925         adapter->liobn = dev->iommu_table->it_index;
 926
 927         netdev->irq = dev->irq;
 928         netdev->open               = ibmveth_open;
 929         netdev->poll               = ibmveth_poll;
 930         netdev->weight             = 16;
 931         netdev->stop               = ibmveth_close;
 932         netdev->hard_start_xmit    = ibmveth_start_xmit;
 933         netdev->get_stats          = ibmveth_get_stats;
 934         netdev->set_multicast_list = ibmveth_set_multicast_list;
 935         netdev->do_ioctl           = ibmveth_ioctl;
 936         netdev->ethtool_ops           = &netdev_ethtool_ops;
 937         netdev->change_mtu         = ibmveth_change_mtu;
 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->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);