[PATCH] atmel: memset correct range
[linux-2.6] / drivers / net / ibmveth.c
1 /**************************************************************************/
2 /*                                                                        */
3 /* IBM eServer i/pSeries Virtual Ethernet Device Driver                   */
4 /* Copyright (C) 2003 IBM Corp.                                           */
5 /*  Originally written by Dave Larson (larson1@us.ibm.com)                */
6 /*  Maintained by 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 static inline void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter);
100
101 #ifdef CONFIG_PROC_FS
102 #define IBMVETH_PROC_DIR "net/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 #define ibmveth_driver_version "1.03"
109
110 MODULE_AUTHOR("Santiago Leon <santil@us.ibm.com>");
111 MODULE_DESCRIPTION("IBM i/pSeries Virtual Ethernet Driver");
112 MODULE_LICENSE("GPL");
113 MODULE_VERSION(ibmveth_driver_version);
114
115 /* simple methods of getting data from the current rxq entry */
116 static inline int ibmveth_rxq_pending_buffer(struct ibmveth_adapter *adapter)
117 {
118         return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].toggle == adapter->rx_queue.toggle);
119 }
120
121 static inline int ibmveth_rxq_buffer_valid(struct ibmveth_adapter *adapter)
122 {
123         return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].valid);
124 }
125
126 static inline int ibmveth_rxq_frame_offset(struct ibmveth_adapter *adapter)
127 {
128         return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].offset);
129 }
130
131 static inline int ibmveth_rxq_frame_length(struct ibmveth_adapter *adapter)
132 {
133         return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].length);
134 }
135
136 /* setup the initial settings for a buffer pool */
137 static void ibmveth_init_buffer_pool(struct ibmveth_buff_pool *pool, u32 pool_index, u32 pool_size, u32 buff_size)
138 {
139         pool->size = pool_size;
140         pool->index = pool_index;
141         pool->buff_size = buff_size;
142         pool->threshold = pool_size / 2;
143 }
144
145 /* allocate and setup an buffer pool - called during open */
146 static int ibmveth_alloc_buffer_pool(struct ibmveth_buff_pool *pool)
147 {
148         int i;
149
150         pool->free_map = kmalloc(sizeof(u16) * pool->size, GFP_KERNEL); 
151
152         if(!pool->free_map) {
153                 return -1;
154         }
155
156         pool->dma_addr = kmalloc(sizeof(dma_addr_t) * pool->size, GFP_KERNEL); 
157         if(!pool->dma_addr) {
158                 kfree(pool->free_map);
159                 pool->free_map = NULL;
160                 return -1;
161         }
162
163         pool->skbuff = kmalloc(sizeof(void*) * pool->size, GFP_KERNEL);
164
165         if(!pool->skbuff) {
166                 kfree(pool->dma_addr);
167                 pool->dma_addr = NULL;
168
169                 kfree(pool->free_map);
170                 pool->free_map = NULL;
171                 return -1;
172         }
173
174         memset(pool->skbuff, 0, sizeof(void*) * pool->size);
175         memset(pool->dma_addr, 0, sizeof(dma_addr_t) * pool->size);
176
177         for(i = 0; i < pool->size; ++i) {
178                 pool->free_map[i] = i;
179         }
180
181         atomic_set(&pool->available, 0);
182         pool->producer_index = 0;
183         pool->consumer_index = 0;
184         pool->active = 0;
185
186         return 0;
187 }
188
189 /* replenish the buffers for a pool.  note that we don't need to
190  * skb_reserve these since they are used for incoming...
191  */
192 static void ibmveth_replenish_buffer_pool(struct ibmveth_adapter *adapter, struct ibmveth_buff_pool *pool)
193 {
194         u32 i;
195         u32 count = pool->size - atomic_read(&pool->available);
196         u32 buffers_added = 0;
197
198         mb();
199
200         for(i = 0; i < count; ++i) {
201                 struct sk_buff *skb;
202                 unsigned int free_index, index;
203                 u64 correlator;
204                 union ibmveth_buf_desc desc;
205                 unsigned long lpar_rc;
206                 dma_addr_t dma_addr;
207
208                 skb = alloc_skb(pool->buff_size, GFP_ATOMIC);
209
210                 if(!skb) {
211                         ibmveth_debug_printk("replenish: unable to allocate skb\n");
212                         adapter->replenish_no_mem++;
213                         break;
214                 }
215
216                 free_index = pool->consumer_index++ % pool->size;
217                 index = pool->free_map[free_index];
218         
219                 ibmveth_assert(index != IBM_VETH_INVALID_MAP);
220                 ibmveth_assert(pool->skbuff[index] == NULL);
221
222                 dma_addr = dma_map_single(&adapter->vdev->dev, skb->data,
223                                 pool->buff_size, DMA_FROM_DEVICE);
224
225                 pool->free_map[free_index] = IBM_VETH_INVALID_MAP;
226                 pool->dma_addr[index] = dma_addr;
227                 pool->skbuff[index] = skb;
228
229                 correlator = ((u64)pool->index << 32) | index;
230                 *(u64*)skb->data = correlator;
231
232                 desc.desc = 0;
233                 desc.fields.valid = 1;
234                 desc.fields.length = pool->buff_size;
235                 desc.fields.address = dma_addr; 
236
237                 lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc);
238                     
239                 if(lpar_rc != H_Success) {
240                         pool->free_map[free_index] = index;
241                         pool->skbuff[index] = NULL;
242                         pool->consumer_index--;
243                         dma_unmap_single(&adapter->vdev->dev,
244                                         pool->dma_addr[index], pool->buff_size,
245                                         DMA_FROM_DEVICE);
246                         dev_kfree_skb_any(skb);
247                         adapter->replenish_add_buff_failure++;
248                         break;
249                 } else {
250                         buffers_added++;
251                         adapter->replenish_add_buff_success++;
252                 }
253         }
254     
255         mb();
256         atomic_add(buffers_added, &(pool->available));
257 }
258
259 /* replenish routine */
260 static void ibmveth_replenish_task(struct ibmveth_adapter *adapter) 
261 {
262         int i;
263
264         adapter->replenish_task_cycles++;
265
266         for(i = 0; i < IbmVethNumBufferPools; i++)
267                 if(adapter->rx_buff_pool[i].active)
268                         ibmveth_replenish_buffer_pool(adapter, 
269                                                      &adapter->rx_buff_pool[i]);
270
271         adapter->rx_no_buffer = *(u64*)(((char*)adapter->buffer_list_addr) + 4096 - 8);
272 }
273
274 /* empty and free ana buffer pool - also used to do cleanup in error paths */
275 static void ibmveth_free_buffer_pool(struct ibmveth_adapter *adapter, struct ibmveth_buff_pool *pool)
276 {
277         int i;
278
279         kfree(pool->free_map);
280         pool->free_map = NULL;
281
282         if(pool->skbuff && pool->dma_addr) {
283                 for(i = 0; i < pool->size; ++i) {
284                         struct sk_buff *skb = pool->skbuff[i];
285                         if(skb) {
286                                 dma_unmap_single(&adapter->vdev->dev,
287                                                  pool->dma_addr[i],
288                                                  pool->buff_size,
289                                                  DMA_FROM_DEVICE);
290                                 dev_kfree_skb_any(skb);
291                                 pool->skbuff[i] = NULL;
292                         }
293                 }
294         }
295
296         if(pool->dma_addr) {
297                 kfree(pool->dma_addr);
298                 pool->dma_addr = NULL;
299         }
300
301         if(pool->skbuff) {
302                 kfree(pool->skbuff);
303                 pool->skbuff = NULL;
304         }
305         pool->active = 0;
306 }
307
308 /* remove a buffer from a pool */
309 static void ibmveth_remove_buffer_from_pool(struct ibmveth_adapter *adapter, u64 correlator)
310 {
311         unsigned int pool  = correlator >> 32;
312         unsigned int index = correlator & 0xffffffffUL;
313         unsigned int free_index;
314         struct sk_buff *skb;
315
316         ibmveth_assert(pool < IbmVethNumBufferPools);
317         ibmveth_assert(index < adapter->rx_buff_pool[pool].size);
318
319         skb = adapter->rx_buff_pool[pool].skbuff[index];
320
321         ibmveth_assert(skb != NULL);
322
323         adapter->rx_buff_pool[pool].skbuff[index] = NULL;
324
325         dma_unmap_single(&adapter->vdev->dev,
326                          adapter->rx_buff_pool[pool].dma_addr[index],
327                          adapter->rx_buff_pool[pool].buff_size,
328                          DMA_FROM_DEVICE);
329
330         free_index = adapter->rx_buff_pool[pool].producer_index++ % adapter->rx_buff_pool[pool].size;
331         adapter->rx_buff_pool[pool].free_map[free_index] = index;
332
333         mb();
334
335         atomic_dec(&(adapter->rx_buff_pool[pool].available));
336 }
337
338 /* get the current buffer on the rx queue */
339 static inline struct sk_buff *ibmveth_rxq_get_buffer(struct ibmveth_adapter *adapter)
340 {
341         u64 correlator = adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator;
342         unsigned int pool = correlator >> 32;
343         unsigned int index = correlator & 0xffffffffUL;
344
345         ibmveth_assert(pool < IbmVethNumBufferPools);
346         ibmveth_assert(index < adapter->rx_buff_pool[pool].size);
347
348         return adapter->rx_buff_pool[pool].skbuff[index];
349 }
350
351 /* recycle the current buffer on the rx queue */
352 static void ibmveth_rxq_recycle_buffer(struct ibmveth_adapter *adapter)
353 {
354         u32 q_index = adapter->rx_queue.index;
355         u64 correlator = adapter->rx_queue.queue_addr[q_index].correlator;
356         unsigned int pool = correlator >> 32;
357         unsigned int index = correlator & 0xffffffffUL;
358         union ibmveth_buf_desc desc;
359         unsigned long lpar_rc;
360
361         ibmveth_assert(pool < IbmVethNumBufferPools);
362         ibmveth_assert(index < adapter->rx_buff_pool[pool].size);
363
364         if(!adapter->rx_buff_pool[pool].active) {
365                 ibmveth_rxq_harvest_buffer(adapter);
366                 ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[pool]);
367                 return;
368         }
369
370         desc.desc = 0;
371         desc.fields.valid = 1;
372         desc.fields.length = adapter->rx_buff_pool[pool].buff_size;
373         desc.fields.address = adapter->rx_buff_pool[pool].dma_addr[index];
374
375         lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc);
376                     
377         if(lpar_rc != H_Success) {
378                 ibmveth_debug_printk("h_add_logical_lan_buffer failed during recycle rc=%ld", lpar_rc);
379                 ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator);
380         }
381
382         if(++adapter->rx_queue.index == adapter->rx_queue.num_slots) {
383                 adapter->rx_queue.index = 0;
384                 adapter->rx_queue.toggle = !adapter->rx_queue.toggle;
385         }
386 }
387
388 static inline void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter)
389 {
390         ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator);
391
392         if(++adapter->rx_queue.index == adapter->rx_queue.num_slots) {
393                 adapter->rx_queue.index = 0;
394                 adapter->rx_queue.toggle = !adapter->rx_queue.toggle;
395         }
396 }
397
398 static void ibmveth_cleanup(struct ibmveth_adapter *adapter)
399 {
400         int i;
401
402         if(adapter->buffer_list_addr != NULL) {
403                 if(!dma_mapping_error(adapter->buffer_list_dma)) {
404                         dma_unmap_single(&adapter->vdev->dev,
405                                         adapter->buffer_list_dma, 4096,
406                                         DMA_BIDIRECTIONAL);
407                         adapter->buffer_list_dma = DMA_ERROR_CODE;
408                 }
409                 free_page((unsigned long)adapter->buffer_list_addr);
410                 adapter->buffer_list_addr = NULL;
411         } 
412
413         if(adapter->filter_list_addr != NULL) {
414                 if(!dma_mapping_error(adapter->filter_list_dma)) {
415                         dma_unmap_single(&adapter->vdev->dev,
416                                         adapter->filter_list_dma, 4096,
417                                         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                         dma_unmap_single(&adapter->vdev->dev,
427                                         adapter->rx_queue.queue_dma,
428                                         adapter->rx_queue.queue_len,
429                                         DMA_BIDIRECTIONAL);
430                         adapter->rx_queue.queue_dma = DMA_ERROR_CODE;
431                 }
432                 kfree(adapter->rx_queue.queue_addr);
433                 adapter->rx_queue.queue_addr = NULL;
434         }
435
436         for(i = 0; i<IbmVethNumBufferPools; i++)
437                 ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[i]);
438 }
439
440 static int ibmveth_open(struct net_device *netdev)
441 {
442         struct ibmveth_adapter *adapter = netdev->priv;
443         u64 mac_address = 0;
444         int rxq_entries = 1;
445         unsigned long lpar_rc;
446         int rc;
447         union ibmveth_buf_desc rxq_desc;
448         int i;
449
450         ibmveth_debug_printk("open starting\n");
451
452         for(i = 0; i<IbmVethNumBufferPools; i++)
453                 rxq_entries += adapter->rx_buff_pool[i].size;
454     
455         adapter->buffer_list_addr = (void*) get_zeroed_page(GFP_KERNEL);
456         adapter->filter_list_addr = (void*) get_zeroed_page(GFP_KERNEL);
457  
458         if(!adapter->buffer_list_addr || !adapter->filter_list_addr) {
459                 ibmveth_error_printk("unable to allocate filter or buffer list pages\n");
460                 ibmveth_cleanup(adapter);
461                 return -ENOMEM;
462         }
463
464         adapter->rx_queue.queue_len = sizeof(struct ibmveth_rx_q_entry) * rxq_entries;
465         adapter->rx_queue.queue_addr = kmalloc(adapter->rx_queue.queue_len, GFP_KERNEL);
466
467         if(!adapter->rx_queue.queue_addr) {
468                 ibmveth_error_printk("unable to allocate rx queue pages\n");
469                 ibmveth_cleanup(adapter);
470                 return -ENOMEM;
471         }
472
473         adapter->buffer_list_dma = dma_map_single(&adapter->vdev->dev,
474                         adapter->buffer_list_addr, 4096, DMA_BIDIRECTIONAL);
475         adapter->filter_list_dma = dma_map_single(&adapter->vdev->dev,
476                         adapter->filter_list_addr, 4096, DMA_BIDIRECTIONAL);
477         adapter->rx_queue.queue_dma = dma_map_single(&adapter->vdev->dev,
478                         adapter->rx_queue.queue_addr,
479                         adapter->rx_queue.queue_len, DMA_BIDIRECTIONAL);
480
481         if((dma_mapping_error(adapter->buffer_list_dma) ) ||
482            (dma_mapping_error(adapter->filter_list_dma)) ||
483            (dma_mapping_error(adapter->rx_queue.queue_dma))) {
484                 ibmveth_error_printk("unable to map filter or buffer list pages\n");
485                 ibmveth_cleanup(adapter);
486                 return -ENOMEM;
487         }
488
489         adapter->rx_queue.index = 0;
490         adapter->rx_queue.num_slots = rxq_entries;
491         adapter->rx_queue.toggle = 1;
492
493         /* call change_mtu to init the buffer pools based in initial mtu */
494         ibmveth_change_mtu(netdev, netdev->mtu);
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%lx filter TCE:0x%lx 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) || (rc == H_Busy));
532
533                 ibmveth_cleanup(adapter);
534                 return rc;
535         }
536
537         ibmveth_debug_printk("initial replenish cycle\n");
538         ibmveth_interrupt(netdev->irq, netdev, NULL);
539
540         netif_start_queue(netdev);
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         do {
559                 lpar_rc = h_free_logical_lan(adapter->vdev->unit_address);
560         } while (H_isLongBusy(lpar_rc) || (lpar_rc == H_Busy));
561
562         if(lpar_rc != H_Success)
563         {
564                 ibmveth_error_printk("h_free_logical_lan failed with %lx, continuing with close\n",
565                                      lpar_rc);
566         }
567
568         adapter->rx_no_buffer = *(u64*)(((char*)adapter->buffer_list_addr) + 4096 - 8);
569
570         ibmveth_cleanup(adapter);
571
572         ibmveth_debug_printk("close complete\n");
573
574         return 0;
575 }
576
577 static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) {
578         cmd->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE);
579         cmd->advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg | ADVERTISED_FIBRE);
580         cmd->speed = SPEED_1000;
581         cmd->duplex = DUPLEX_FULL;
582         cmd->port = PORT_FIBRE;
583         cmd->phy_address = 0;
584         cmd->transceiver = XCVR_INTERNAL;
585         cmd->autoneg = AUTONEG_ENABLE;
586         cmd->maxtxpkt = 0;
587         cmd->maxrxpkt = 1;
588         return 0;
589 }
590
591 static void netdev_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info) {
592         strncpy(info->driver, ibmveth_driver_name, sizeof(info->driver) - 1);
593         strncpy(info->version, ibmveth_driver_version, sizeof(info->version) - 1);
594 }
595
596 static u32 netdev_get_link(struct net_device *dev) {
597         return 1;
598 }
599
600 static struct ethtool_ops netdev_ethtool_ops = {
601         .get_drvinfo            = netdev_get_drvinfo,
602         .get_settings           = netdev_get_settings,
603         .get_link               = netdev_get_link,
604         .get_sg                 = ethtool_op_get_sg,
605         .get_tx_csum            = ethtool_op_get_tx_csum,
606 };
607
608 static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
609 {
610         return -EOPNOTSUPP;
611 }
612
613 #define page_offset(v) ((unsigned long)(v) & ((1 << 12) - 1))
614
615 static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *netdev)
616 {
617         struct ibmveth_adapter *adapter = netdev->priv;
618         union ibmveth_buf_desc desc[IbmVethMaxSendFrags];
619         unsigned long lpar_rc;
620         int nfrags = 0, curfrag;
621         unsigned long correlator;
622         unsigned long flags;
623         unsigned int retry_count;
624         unsigned int tx_dropped = 0;
625         unsigned int tx_bytes = 0;
626         unsigned int tx_packets = 0;
627         unsigned int tx_send_failed = 0;
628         unsigned int tx_map_failed = 0;
629
630
631         if ((skb_shinfo(skb)->nr_frags + 1) > IbmVethMaxSendFrags) {
632                 tx_dropped++;
633                 goto out;
634         }
635
636         memset(&desc, 0, sizeof(desc));
637
638         /* nfrags = number of frags after the initial fragment */
639         nfrags = skb_shinfo(skb)->nr_frags;
640
641         if(nfrags)
642                 adapter->tx_multidesc_send++;
643
644         /* map the initial fragment */
645         desc[0].fields.length  = nfrags ? skb->len - skb->data_len : skb->len;
646         desc[0].fields.address = dma_map_single(&adapter->vdev->dev, skb->data,
647                                         desc[0].fields.length, DMA_TO_DEVICE);
648         desc[0].fields.valid   = 1;
649
650         if(dma_mapping_error(desc[0].fields.address)) {
651                 ibmveth_error_printk("tx: unable to map initial fragment\n");
652                 tx_map_failed++;
653                 tx_dropped++;
654                 goto out;
655         }
656
657         curfrag = nfrags;
658
659         /* map fragments past the initial portion if there are any */
660         while(curfrag--) {
661                 skb_frag_t *frag = &skb_shinfo(skb)->frags[curfrag];
662                 desc[curfrag+1].fields.address
663                         = dma_map_single(&adapter->vdev->dev,
664                                 page_address(frag->page) + frag->page_offset,
665                                 frag->size, DMA_TO_DEVICE);
666                 desc[curfrag+1].fields.length = frag->size;
667                 desc[curfrag+1].fields.valid  = 1;
668
669                 if(dma_mapping_error(desc[curfrag+1].fields.address)) {
670                         ibmveth_error_printk("tx: unable to map fragment %d\n", curfrag);
671                         tx_map_failed++;
672                         tx_dropped++;
673                         /* Free all the mappings we just created */
674                         while(curfrag < nfrags) {
675                                 dma_unmap_single(&adapter->vdev->dev,
676                                                  desc[curfrag+1].fields.address,
677                                                  desc[curfrag+1].fields.length,
678                                                  DMA_TO_DEVICE);
679                                 curfrag++;
680                         }
681                         goto out;
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                 tx_send_failed++;
707                 tx_dropped++;
708         } else {
709                 tx_packets++;
710                 tx_bytes += skb->len;
711                 netdev->trans_start = jiffies;
712         }
713
714         do {
715                 dma_unmap_single(&adapter->vdev->dev,
716                                 desc[nfrags].fields.address,
717                                 desc[nfrags].fields.length, DMA_TO_DEVICE);
718         } while(--nfrags >= 0);
719
720 out:    spin_lock_irqsave(&adapter->stats_lock, flags);
721         adapter->stats.tx_dropped += tx_dropped;
722         adapter->stats.tx_bytes += tx_bytes;
723         adapter->stats.tx_packets += tx_packets;
724         adapter->tx_send_failed += tx_send_failed;
725         adapter->tx_map_failed += tx_map_failed;
726         spin_unlock_irqrestore(&adapter->stats_lock, flags);
727
728         dev_kfree_skb(skb);
729         return 0;
730 }
731
732 static int ibmveth_poll(struct net_device *netdev, int *budget)
733 {
734         struct ibmveth_adapter *adapter = netdev->priv;
735         int max_frames_to_process = netdev->quota;
736         int frames_processed = 0;
737         int more_work = 1;
738         unsigned long lpar_rc;
739
740  restart_poll:
741         do {
742                 struct net_device *netdev = adapter->netdev;
743
744                 if(ibmveth_rxq_pending_buffer(adapter)) {
745                         struct sk_buff *skb;
746
747                         rmb();
748
749                         if(!ibmveth_rxq_buffer_valid(adapter)) {
750                                 wmb(); /* suggested by larson1 */
751                                 adapter->rx_invalid_buffer++;
752                                 ibmveth_debug_printk("recycling invalid buffer\n");
753                                 ibmveth_rxq_recycle_buffer(adapter);
754                         } else {
755                                 int length = ibmveth_rxq_frame_length(adapter);
756                                 int offset = ibmveth_rxq_frame_offset(adapter);
757                                 skb = ibmveth_rxq_get_buffer(adapter);
758
759                                 ibmveth_rxq_harvest_buffer(adapter);
760
761                                 skb_reserve(skb, offset);
762                                 skb_put(skb, length);
763                                 skb->dev = netdev;
764                                 skb->protocol = eth_type_trans(skb, netdev);
765
766                                 netif_receive_skb(skb); /* send it up */
767
768                                 adapter->stats.rx_packets++;
769                                 adapter->stats.rx_bytes += length;
770                                 frames_processed++;
771                                 netdev->last_rx = jiffies;
772                         }
773                 } else {
774                         more_work = 0;
775                 }
776         } while(more_work && (frames_processed < max_frames_to_process));
777
778         ibmveth_replenish_task(adapter);
779
780         if(more_work) {
781                 /* more work to do - return that we are not done yet */
782                 netdev->quota -= frames_processed;
783                 *budget -= frames_processed;
784                 return 1; 
785         }
786
787         /* we think we are done - reenable interrupts, then check once more to make sure we are done */
788         lpar_rc = h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_ENABLE);
789
790         ibmveth_assert(lpar_rc == H_Success);
791
792         netif_rx_complete(netdev);
793
794         if(ibmveth_rxq_pending_buffer(adapter) && netif_rx_reschedule(netdev, frames_processed))
795         {
796                 lpar_rc = h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE);
797                 ibmveth_assert(lpar_rc == H_Success);
798                 more_work = 1;
799                 goto restart_poll;
800         }
801
802         netdev->quota -= frames_processed;
803         *budget -= frames_processed;
804
805         /* we really are done */
806         return 0;
807 }
808
809 static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance, struct pt_regs *regs)
810 {   
811         struct net_device *netdev = dev_instance;
812         struct ibmveth_adapter *adapter = netdev->priv;
813         unsigned long lpar_rc;
814
815         if(netif_rx_schedule_prep(netdev)) {
816                 lpar_rc = h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE);
817                 ibmveth_assert(lpar_rc == H_Success);
818                 __netif_rx_schedule(netdev);
819         }
820         return IRQ_HANDLED;
821 }
822
823 static struct net_device_stats *ibmveth_get_stats(struct net_device *dev)
824 {
825         struct ibmveth_adapter *adapter = dev->priv;
826         return &adapter->stats;
827 }
828
829 static void ibmveth_set_multicast_list(struct net_device *netdev)
830 {
831         struct ibmveth_adapter *adapter = netdev->priv;
832         unsigned long lpar_rc;
833
834         if((netdev->flags & IFF_PROMISC) || (netdev->mc_count > adapter->mcastFilterSize)) {
835                 lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address,
836                                            IbmVethMcastEnableRecv |
837                                            IbmVethMcastDisableFiltering,
838                                            0);
839                 if(lpar_rc != H_Success) {
840                         ibmveth_error_printk("h_multicast_ctrl rc=%ld when entering promisc mode\n", lpar_rc);
841                 }
842         } else {
843                 struct dev_mc_list *mclist = netdev->mc_list;
844                 int i;
845                 /* clear the filter table & disable filtering */
846                 lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address,
847                                            IbmVethMcastEnableRecv |
848                                            IbmVethMcastDisableFiltering |
849                                            IbmVethMcastClearFilterTable,
850                                            0);
851                 if(lpar_rc != H_Success) {
852                         ibmveth_error_printk("h_multicast_ctrl rc=%ld when attempting to clear filter table\n", lpar_rc);
853                 }
854                 /* add the addresses to the filter table */
855                 for(i = 0; i < netdev->mc_count; ++i, mclist = mclist->next) {
856                         // add the multicast address to the filter table
857                         unsigned long mcast_addr = 0;
858                         memcpy(((char *)&mcast_addr)+2, mclist->dmi_addr, 6);
859                         lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address,
860                                                    IbmVethMcastAddFilter,
861                                                    mcast_addr);
862                         if(lpar_rc != H_Success) {
863                                 ibmveth_error_printk("h_multicast_ctrl rc=%ld when adding an entry to the filter table\n", lpar_rc);
864                         }
865                 }
866         
867                 /* re-enable filtering */
868                 lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address,
869                                            IbmVethMcastEnableFiltering,
870                                            0);
871                 if(lpar_rc != H_Success) {
872                         ibmveth_error_printk("h_multicast_ctrl rc=%ld when enabling filtering\n", lpar_rc);
873                 }
874         }
875 }
876
877 static int ibmveth_change_mtu(struct net_device *dev, int new_mtu)
878 {
879         struct ibmveth_adapter *adapter = dev->priv;
880         int i;
881         int prev_smaller = 1;
882
883         if ((new_mtu < 68) || 
884             (new_mtu > (pool_size[IbmVethNumBufferPools-1]) - IBMVETH_BUFF_OH))
885                 return -EINVAL;
886
887         for(i = 0; i<IbmVethNumBufferPools; i++) {
888                 int activate = 0;
889                 if (new_mtu > (pool_size[i]  - IBMVETH_BUFF_OH)) { 
890                         activate = 1;
891                         prev_smaller= 1;
892                 } else {
893                         if (prev_smaller)
894                                 activate = 1;
895                         prev_smaller= 0;
896                 }
897
898                 if (activate && !adapter->rx_buff_pool[i].active) {
899                         struct ibmveth_buff_pool *pool = 
900                                                 &adapter->rx_buff_pool[i];
901                         if(ibmveth_alloc_buffer_pool(pool)) {
902                                 ibmveth_error_printk("unable to alloc pool\n");
903                                 return -ENOMEM;
904                         }
905                         adapter->rx_buff_pool[i].active = 1;
906                 } else if (!activate && adapter->rx_buff_pool[i].active) {
907                         adapter->rx_buff_pool[i].active = 0;
908                         h_free_logical_lan_buffer(adapter->vdev->unit_address,
909                                           (u64)pool_size[i]);
910                 }
911
912         }
913
914         /* kick the interrupt handler so that the new buffer pools get
915            replenished or deallocated */
916         ibmveth_interrupt(dev->irq, dev, NULL);
917
918         dev->mtu = new_mtu;
919         return 0;       
920 }
921
922 static int __devinit ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id)
923 {
924         int rc, i;
925         struct net_device *netdev;
926         struct ibmveth_adapter *adapter = NULL;
927
928         unsigned char *mac_addr_p;
929         unsigned int *mcastFilterSize_p;
930
931
932         ibmveth_debug_printk_no_adapter("entering ibmveth_probe for UA 0x%x\n", 
933                                         dev->unit_address);
934
935         mac_addr_p = (unsigned char *) vio_get_attribute(dev, VETH_MAC_ADDR, 0);
936         if(!mac_addr_p) {
937                 printk(KERN_ERR "(%s:%3.3d) ERROR: Can't find VETH_MAC_ADDR "
938                                 "attribute\n", __FILE__, __LINE__);
939                 return 0;
940         }
941         
942         mcastFilterSize_p= (unsigned int *) vio_get_attribute(dev, VETH_MCAST_FILTER_SIZE, 0);
943         if(!mcastFilterSize_p) {
944                 printk(KERN_ERR "(%s:%3.3d) ERROR: Can't find "
945                                 "VETH_MCAST_FILTER_SIZE attribute\n",
946                                 __FILE__, __LINE__);
947                 return 0;
948         }
949         
950         netdev = alloc_etherdev(sizeof(struct ibmveth_adapter));
951
952         if(!netdev)
953                 return -ENOMEM;
954
955         SET_MODULE_OWNER(netdev);
956
957         adapter = netdev->priv;
958         memset(adapter, 0, sizeof(adapter));
959         dev->dev.driver_data = netdev;
960
961         adapter->vdev = dev;
962         adapter->netdev = netdev;
963         adapter->mcastFilterSize= *mcastFilterSize_p;
964         
965         /*      Some older boxes running PHYP non-natively have an OF that
966                 returns a 8-byte local-mac-address field (and the first 
967                 2 bytes have to be ignored) while newer boxes' OF return
968                 a 6-byte field. Note that IEEE 1275 specifies that 
969                 local-mac-address must be a 6-byte field.
970                 The RPA doc specifies that the first byte must be 10b, so 
971                 we'll just look for it to solve this 8 vs. 6 byte field issue */
972
973         if ((*mac_addr_p & 0x3) != 0x02)
974                 mac_addr_p += 2;
975
976         adapter->mac_addr = 0;
977         memcpy(&adapter->mac_addr, mac_addr_p, 6);
978
979         adapter->liobn = dev->iommu_table->it_index;
980         
981         netdev->irq = dev->irq;
982         netdev->open               = ibmveth_open;
983         netdev->poll               = ibmveth_poll;
984         netdev->weight             = 16;
985         netdev->stop               = ibmveth_close;
986         netdev->hard_start_xmit    = ibmveth_start_xmit;
987         netdev->get_stats          = ibmveth_get_stats;
988         netdev->set_multicast_list = ibmveth_set_multicast_list;
989         netdev->do_ioctl           = ibmveth_ioctl;
990         netdev->ethtool_ops           = &netdev_ethtool_ops;
991         netdev->change_mtu         = ibmveth_change_mtu;
992         SET_NETDEV_DEV(netdev, &dev->dev);
993         netdev->features |= NETIF_F_LLTX; 
994         spin_lock_init(&adapter->stats_lock);
995
996         memcpy(&netdev->dev_addr, &adapter->mac_addr, netdev->addr_len);
997
998         for(i = 0; i<IbmVethNumBufferPools; i++)
999                 ibmveth_init_buffer_pool(&adapter->rx_buff_pool[i], i, 
1000                                          pool_count[i], pool_size[i]);
1001
1002         ibmveth_debug_printk("adapter @ 0x%p\n", adapter);
1003
1004         adapter->buffer_list_dma = DMA_ERROR_CODE;
1005         adapter->filter_list_dma = DMA_ERROR_CODE;
1006         adapter->rx_queue.queue_dma = DMA_ERROR_CODE;
1007
1008         ibmveth_debug_printk("registering netdev...\n");
1009
1010         rc = register_netdev(netdev);
1011
1012         if(rc) {
1013                 ibmveth_debug_printk("failed to register netdev rc=%d\n", rc);
1014                 free_netdev(netdev);
1015                 return rc;
1016         }
1017
1018         ibmveth_debug_printk("registered\n");
1019
1020         ibmveth_proc_register_adapter(adapter);
1021
1022         return 0;
1023 }
1024
1025 static int __devexit ibmveth_remove(struct vio_dev *dev)
1026 {
1027         struct net_device *netdev = dev->dev.driver_data;
1028         struct ibmveth_adapter *adapter = netdev->priv;
1029
1030         unregister_netdev(netdev);
1031
1032         ibmveth_proc_unregister_adapter(adapter);
1033
1034         free_netdev(netdev);
1035         return 0;
1036 }
1037
1038 #ifdef CONFIG_PROC_FS
1039 static void ibmveth_proc_register_driver(void)
1040 {
1041         ibmveth_proc_dir = proc_mkdir(IBMVETH_PROC_DIR, NULL);
1042         if (ibmveth_proc_dir) {
1043                 SET_MODULE_OWNER(ibmveth_proc_dir);
1044         }
1045 }
1046
1047 static void ibmveth_proc_unregister_driver(void)
1048 {
1049         remove_proc_entry(IBMVETH_PROC_DIR, NULL);
1050 }
1051
1052 static void *ibmveth_seq_start(struct seq_file *seq, loff_t *pos) 
1053 {
1054         if (*pos == 0) {
1055                 return (void *)1;
1056         } else {
1057                 return NULL;
1058         }
1059 }
1060
1061 static void *ibmveth_seq_next(struct seq_file *seq, void *v, loff_t *pos)
1062 {
1063         ++*pos;
1064         return NULL;
1065 }
1066
1067 static void ibmveth_seq_stop(struct seq_file *seq, void *v) 
1068 {
1069 }
1070
1071 static int ibmveth_seq_show(struct seq_file *seq, void *v) 
1072 {
1073         struct ibmveth_adapter *adapter = seq->private;
1074         char *current_mac = ((char*) &adapter->netdev->dev_addr);
1075         char *firmware_mac = ((char*) &adapter->mac_addr) ;
1076
1077         seq_printf(seq, "%s %s\n\n", ibmveth_driver_string, ibmveth_driver_version);
1078         
1079         seq_printf(seq, "Unit Address:    0x%x\n", adapter->vdev->unit_address);
1080         seq_printf(seq, "LIOBN:           0x%lx\n", adapter->liobn);
1081         seq_printf(seq, "Current MAC:     %02X:%02X:%02X:%02X:%02X:%02X\n",
1082                    current_mac[0], current_mac[1], current_mac[2],
1083                    current_mac[3], current_mac[4], current_mac[5]);
1084         seq_printf(seq, "Firmware MAC:    %02X:%02X:%02X:%02X:%02X:%02X\n",
1085                    firmware_mac[0], firmware_mac[1], firmware_mac[2],
1086                    firmware_mac[3], firmware_mac[4], firmware_mac[5]);
1087         
1088         seq_printf(seq, "\nAdapter Statistics:\n");
1089         seq_printf(seq, "  TX:  skbuffs linearized:          %ld\n", adapter->tx_linearized);
1090         seq_printf(seq, "       multi-descriptor sends:      %ld\n", adapter->tx_multidesc_send);
1091         seq_printf(seq, "       skb_linearize failures:      %ld\n", adapter->tx_linearize_failed);
1092         seq_printf(seq, "       vio_map_single failres:      %ld\n", adapter->tx_map_failed);
1093         seq_printf(seq, "       send failures:               %ld\n", adapter->tx_send_failed);
1094         seq_printf(seq, "  RX:  replenish task cycles:       %ld\n", adapter->replenish_task_cycles);
1095         seq_printf(seq, "       alloc_skb_failures:          %ld\n", adapter->replenish_no_mem);
1096         seq_printf(seq, "       add buffer failures:         %ld\n", adapter->replenish_add_buff_failure);
1097         seq_printf(seq, "       invalid buffers:             %ld\n", adapter->rx_invalid_buffer);
1098         seq_printf(seq, "       no buffers:                  %ld\n", adapter->rx_no_buffer);
1099         
1100         return 0;
1101 }
1102 static struct seq_operations ibmveth_seq_ops = {
1103         .start = ibmveth_seq_start,
1104         .next  = ibmveth_seq_next,
1105         .stop  = ibmveth_seq_stop,
1106         .show  = ibmveth_seq_show,
1107 };
1108
1109 static int ibmveth_proc_open(struct inode *inode, struct file *file)
1110 {
1111         struct seq_file *seq;
1112         struct proc_dir_entry *proc;
1113         int rc;
1114
1115         rc = seq_open(file, &ibmveth_seq_ops);
1116         if (!rc) {
1117                 /* recover the pointer buried in proc_dir_entry data */
1118                 seq = file->private_data;
1119                 proc = PDE(inode);
1120                 seq->private = proc->data;
1121         }
1122         return rc;
1123 }
1124
1125 static struct file_operations ibmveth_proc_fops = {
1126         .owner   = THIS_MODULE,
1127         .open    = ibmveth_proc_open,
1128         .read    = seq_read,
1129         .llseek  = seq_lseek,
1130         .release = seq_release,
1131 };
1132
1133 static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter)
1134 {
1135         struct proc_dir_entry *entry;
1136         if (ibmveth_proc_dir) {
1137                 entry = create_proc_entry(adapter->netdev->name, S_IFREG, ibmveth_proc_dir);
1138                 if (!entry) {
1139                         ibmveth_error_printk("Cannot create adapter proc entry");
1140                 } else {
1141                         entry->data = (void *) adapter;
1142                         entry->proc_fops = &ibmveth_proc_fops;
1143                         SET_MODULE_OWNER(entry);
1144                 }
1145         }
1146         return;
1147 }
1148
1149 static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter)
1150 {
1151         if (ibmveth_proc_dir) {
1152                 remove_proc_entry(adapter->netdev->name, ibmveth_proc_dir);
1153         }
1154 }
1155
1156 #else /* CONFIG_PROC_FS */
1157 static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter) 
1158 {
1159 }
1160
1161 static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter) 
1162 {
1163 }
1164 static void ibmveth_proc_register_driver(void)
1165 {
1166 }
1167
1168 static void ibmveth_proc_unregister_driver(void)
1169 {
1170 }
1171 #endif /* CONFIG_PROC_FS */
1172
1173 static struct vio_device_id ibmveth_device_table[] __devinitdata= {
1174         { "network", "IBM,l-lan"},
1175         { "", "" }
1176 };
1177 MODULE_DEVICE_TABLE(vio, ibmveth_device_table);
1178
1179 static struct vio_driver ibmveth_driver = {
1180         .id_table       = ibmveth_device_table,
1181         .probe          = ibmveth_probe,
1182         .remove         = ibmveth_remove,
1183         .driver         = {
1184                 .name   = ibmveth_driver_name,
1185                 .owner  = THIS_MODULE,
1186         }
1187 };
1188
1189 static int __init ibmveth_module_init(void)
1190 {
1191         ibmveth_printk("%s: %s %s\n", ibmveth_driver_name, ibmveth_driver_string, ibmveth_driver_version);
1192
1193         ibmveth_proc_register_driver();
1194
1195         return vio_register_driver(&ibmveth_driver);
1196 }
1197
1198 static void __exit ibmveth_module_exit(void)
1199 {
1200         vio_unregister_driver(&ibmveth_driver);
1201         ibmveth_proc_unregister_driver();
1202 }       
1203
1204 module_init(ibmveth_module_init);
1205 module_exit(ibmveth_module_exit);