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1da177e4 LT |
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_schedule_replenishing(struct ibmveth_adapter*); | |
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 | #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 | ||
185 | return 0; | |
186 | } | |
187 | ||
188 | /* replenish the buffers for a pool. note that we don't need to | |
189 | * skb_reserve these since they are used for incoming... | |
190 | */ | |
191 | static void ibmveth_replenish_buffer_pool(struct ibmveth_adapter *adapter, struct ibmveth_buff_pool *pool) | |
192 | { | |
193 | u32 i; | |
194 | u32 count = pool->size - atomic_read(&pool->available); | |
195 | u32 buffers_added = 0; | |
196 | ||
197 | mb(); | |
198 | ||
199 | for(i = 0; i < count; ++i) { | |
200 | struct sk_buff *skb; | |
201 | unsigned int free_index, index; | |
202 | u64 correlator; | |
203 | union ibmveth_buf_desc desc; | |
204 | unsigned long lpar_rc; | |
205 | dma_addr_t dma_addr; | |
206 | ||
207 | skb = alloc_skb(pool->buff_size, GFP_ATOMIC); | |
208 | ||
209 | if(!skb) { | |
210 | ibmveth_debug_printk("replenish: unable to allocate skb\n"); | |
211 | adapter->replenish_no_mem++; | |
212 | break; | |
213 | } | |
214 | ||
215 | free_index = pool->consumer_index++ % pool->size; | |
216 | index = pool->free_map[free_index]; | |
217 | ||
218 | ibmveth_assert(index != IBM_VETH_INVALID_MAP); | |
219 | ibmveth_assert(pool->skbuff[index] == NULL); | |
220 | ||
221 | dma_addr = dma_map_single(&adapter->vdev->dev, skb->data, | |
222 | pool->buff_size, DMA_FROM_DEVICE); | |
223 | ||
224 | pool->free_map[free_index] = IBM_VETH_INVALID_MAP; | |
225 | pool->dma_addr[index] = dma_addr; | |
226 | pool->skbuff[index] = skb; | |
227 | ||
228 | correlator = ((u64)pool->index << 32) | index; | |
229 | *(u64*)skb->data = correlator; | |
230 | ||
231 | desc.desc = 0; | |
232 | desc.fields.valid = 1; | |
233 | desc.fields.length = pool->buff_size; | |
234 | desc.fields.address = dma_addr; | |
235 | ||
236 | lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc); | |
237 | ||
238 | if(lpar_rc != H_Success) { | |
239 | pool->free_map[free_index] = IBM_VETH_INVALID_MAP; | |
240 | pool->skbuff[index] = NULL; | |
241 | pool->consumer_index--; | |
242 | dma_unmap_single(&adapter->vdev->dev, | |
243 | pool->dma_addr[index], pool->buff_size, | |
244 | DMA_FROM_DEVICE); | |
245 | dev_kfree_skb_any(skb); | |
246 | adapter->replenish_add_buff_failure++; | |
247 | break; | |
248 | } else { | |
249 | buffers_added++; | |
250 | adapter->replenish_add_buff_success++; | |
251 | } | |
252 | } | |
253 | ||
254 | mb(); | |
255 | atomic_add(buffers_added, &(pool->available)); | |
256 | } | |
257 | ||
258 | /* check if replenishing is needed. */ | |
259 | static inline int ibmveth_is_replenishing_needed(struct ibmveth_adapter *adapter) | |
260 | { | |
261 | return ((atomic_read(&adapter->rx_buff_pool[0].available) < adapter->rx_buff_pool[0].threshold) || | |
262 | (atomic_read(&adapter->rx_buff_pool[1].available) < adapter->rx_buff_pool[1].threshold) || | |
263 | (atomic_read(&adapter->rx_buff_pool[2].available) < adapter->rx_buff_pool[2].threshold)); | |
264 | } | |
265 | ||
266 | /* kick the replenish tasklet if we need replenishing and it isn't already running */ | |
267 | static inline void ibmveth_schedule_replenishing(struct ibmveth_adapter *adapter) | |
268 | { | |
269 | if(ibmveth_is_replenishing_needed(adapter) && | |
270 | (atomic_dec_if_positive(&adapter->not_replenishing) == 0)) { | |
271 | schedule_work(&adapter->replenish_task); | |
272 | } | |
273 | } | |
274 | ||
275 | /* replenish tasklet routine */ | |
276 | static void ibmveth_replenish_task(struct ibmveth_adapter *adapter) | |
277 | { | |
278 | adapter->replenish_task_cycles++; | |
279 | ||
280 | ibmveth_replenish_buffer_pool(adapter, &adapter->rx_buff_pool[0]); | |
281 | ibmveth_replenish_buffer_pool(adapter, &adapter->rx_buff_pool[1]); | |
282 | ibmveth_replenish_buffer_pool(adapter, &adapter->rx_buff_pool[2]); | |
283 | ||
284 | adapter->rx_no_buffer = *(u64*)(((char*)adapter->buffer_list_addr) + 4096 - 8); | |
285 | ||
286 | atomic_inc(&adapter->not_replenishing); | |
287 | ||
288 | ibmveth_schedule_replenishing(adapter); | |
289 | } | |
290 | ||
291 | /* empty and free ana buffer pool - also used to do cleanup in error paths */ | |
292 | static void ibmveth_free_buffer_pool(struct ibmveth_adapter *adapter, struct ibmveth_buff_pool *pool) | |
293 | { | |
294 | int i; | |
295 | ||
296 | if(pool->free_map) { | |
297 | kfree(pool->free_map); | |
298 | pool->free_map = NULL; | |
299 | } | |
300 | ||
301 | if(pool->skbuff && pool->dma_addr) { | |
302 | for(i = 0; i < pool->size; ++i) { | |
303 | struct sk_buff *skb = pool->skbuff[i]; | |
304 | if(skb) { | |
305 | dma_unmap_single(&adapter->vdev->dev, | |
306 | pool->dma_addr[i], | |
307 | pool->buff_size, | |
308 | DMA_FROM_DEVICE); | |
309 | dev_kfree_skb_any(skb); | |
310 | pool->skbuff[i] = NULL; | |
311 | } | |
312 | } | |
313 | } | |
314 | ||
315 | if(pool->dma_addr) { | |
316 | kfree(pool->dma_addr); | |
317 | pool->dma_addr = NULL; | |
318 | } | |
319 | ||
320 | if(pool->skbuff) { | |
321 | kfree(pool->skbuff); | |
322 | pool->skbuff = NULL; | |
323 | } | |
324 | } | |
325 | ||
326 | /* remove a buffer from a pool */ | |
327 | static void ibmveth_remove_buffer_from_pool(struct ibmveth_adapter *adapter, u64 correlator) | |
328 | { | |
329 | unsigned int pool = correlator >> 32; | |
330 | unsigned int index = correlator & 0xffffffffUL; | |
331 | unsigned int free_index; | |
332 | struct sk_buff *skb; | |
333 | ||
334 | ibmveth_assert(pool < IbmVethNumBufferPools); | |
335 | ibmveth_assert(index < adapter->rx_buff_pool[pool].size); | |
336 | ||
337 | skb = adapter->rx_buff_pool[pool].skbuff[index]; | |
338 | ||
339 | ibmveth_assert(skb != NULL); | |
340 | ||
341 | adapter->rx_buff_pool[pool].skbuff[index] = NULL; | |
342 | ||
343 | dma_unmap_single(&adapter->vdev->dev, | |
344 | adapter->rx_buff_pool[pool].dma_addr[index], | |
345 | adapter->rx_buff_pool[pool].buff_size, | |
346 | DMA_FROM_DEVICE); | |
347 | ||
348 | free_index = adapter->rx_buff_pool[pool].producer_index++ % adapter->rx_buff_pool[pool].size; | |
349 | adapter->rx_buff_pool[pool].free_map[free_index] = index; | |
350 | ||
351 | mb(); | |
352 | ||
353 | atomic_dec(&(adapter->rx_buff_pool[pool].available)); | |
354 | } | |
355 | ||
356 | /* get the current buffer on the rx queue */ | |
357 | static inline struct sk_buff *ibmveth_rxq_get_buffer(struct ibmveth_adapter *adapter) | |
358 | { | |
359 | u64 correlator = adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator; | |
360 | unsigned int pool = correlator >> 32; | |
361 | unsigned int index = correlator & 0xffffffffUL; | |
362 | ||
363 | ibmveth_assert(pool < IbmVethNumBufferPools); | |
364 | ibmveth_assert(index < adapter->rx_buff_pool[pool].size); | |
365 | ||
366 | return adapter->rx_buff_pool[pool].skbuff[index]; | |
367 | } | |
368 | ||
369 | /* recycle the current buffer on the rx queue */ | |
370 | static void ibmveth_rxq_recycle_buffer(struct ibmveth_adapter *adapter) | |
371 | { | |
372 | u32 q_index = adapter->rx_queue.index; | |
373 | u64 correlator = adapter->rx_queue.queue_addr[q_index].correlator; | |
374 | unsigned int pool = correlator >> 32; | |
375 | unsigned int index = correlator & 0xffffffffUL; | |
376 | union ibmveth_buf_desc desc; | |
377 | unsigned long lpar_rc; | |
378 | ||
379 | ibmveth_assert(pool < IbmVethNumBufferPools); | |
380 | ibmveth_assert(index < adapter->rx_buff_pool[pool].size); | |
381 | ||
382 | desc.desc = 0; | |
383 | desc.fields.valid = 1; | |
384 | desc.fields.length = adapter->rx_buff_pool[pool].buff_size; | |
385 | desc.fields.address = adapter->rx_buff_pool[pool].dma_addr[index]; | |
386 | ||
387 | lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc); | |
388 | ||
389 | if(lpar_rc != H_Success) { | |
390 | ibmveth_debug_printk("h_add_logical_lan_buffer failed during recycle rc=%ld", lpar_rc); | |
391 | ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator); | |
392 | } | |
393 | ||
394 | if(++adapter->rx_queue.index == adapter->rx_queue.num_slots) { | |
395 | adapter->rx_queue.index = 0; | |
396 | adapter->rx_queue.toggle = !adapter->rx_queue.toggle; | |
397 | } | |
398 | } | |
399 | ||
400 | static inline void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter) | |
401 | { | |
402 | ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator); | |
403 | ||
404 | if(++adapter->rx_queue.index == adapter->rx_queue.num_slots) { | |
405 | adapter->rx_queue.index = 0; | |
406 | adapter->rx_queue.toggle = !adapter->rx_queue.toggle; | |
407 | } | |
408 | } | |
409 | ||
410 | static void ibmveth_cleanup(struct ibmveth_adapter *adapter) | |
411 | { | |
412 | if(adapter->buffer_list_addr != NULL) { | |
413 | if(!dma_mapping_error(adapter->buffer_list_dma)) { | |
414 | dma_unmap_single(&adapter->vdev->dev, | |
415 | adapter->buffer_list_dma, 4096, | |
416 | DMA_BIDIRECTIONAL); | |
417 | adapter->buffer_list_dma = DMA_ERROR_CODE; | |
418 | } | |
419 | free_page((unsigned long)adapter->buffer_list_addr); | |
420 | adapter->buffer_list_addr = NULL; | |
421 | } | |
422 | ||
423 | if(adapter->filter_list_addr != NULL) { | |
424 | if(!dma_mapping_error(adapter->filter_list_dma)) { | |
425 | dma_unmap_single(&adapter->vdev->dev, | |
426 | adapter->filter_list_dma, 4096, | |
427 | DMA_BIDIRECTIONAL); | |
428 | adapter->filter_list_dma = DMA_ERROR_CODE; | |
429 | } | |
430 | free_page((unsigned long)adapter->filter_list_addr); | |
431 | adapter->filter_list_addr = NULL; | |
432 | } | |
433 | ||
434 | if(adapter->rx_queue.queue_addr != NULL) { | |
435 | if(!dma_mapping_error(adapter->rx_queue.queue_dma)) { | |
436 | dma_unmap_single(&adapter->vdev->dev, | |
437 | adapter->rx_queue.queue_dma, | |
438 | adapter->rx_queue.queue_len, | |
439 | DMA_BIDIRECTIONAL); | |
440 | adapter->rx_queue.queue_dma = DMA_ERROR_CODE; | |
441 | } | |
442 | kfree(adapter->rx_queue.queue_addr); | |
443 | adapter->rx_queue.queue_addr = NULL; | |
444 | } | |
445 | ||
446 | ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[0]); | |
447 | ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[1]); | |
448 | ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[2]); | |
449 | } | |
450 | ||
451 | static int ibmveth_open(struct net_device *netdev) | |
452 | { | |
453 | struct ibmveth_adapter *adapter = netdev->priv; | |
454 | u64 mac_address = 0; | |
455 | int rxq_entries; | |
456 | unsigned long lpar_rc; | |
457 | int rc; | |
458 | union ibmveth_buf_desc rxq_desc; | |
459 | ||
460 | ibmveth_debug_printk("open starting\n"); | |
461 | ||
462 | rxq_entries = | |
463 | adapter->rx_buff_pool[0].size + | |
464 | adapter->rx_buff_pool[1].size + | |
465 | adapter->rx_buff_pool[2].size + 1; | |
466 | ||
467 | adapter->buffer_list_addr = (void*) get_zeroed_page(GFP_KERNEL); | |
468 | adapter->filter_list_addr = (void*) get_zeroed_page(GFP_KERNEL); | |
469 | ||
470 | if(!adapter->buffer_list_addr || !adapter->filter_list_addr) { | |
471 | ibmveth_error_printk("unable to allocate filter or buffer list pages\n"); | |
472 | ibmveth_cleanup(adapter); | |
473 | return -ENOMEM; | |
474 | } | |
475 | ||
476 | adapter->rx_queue.queue_len = sizeof(struct ibmveth_rx_q_entry) * rxq_entries; | |
477 | adapter->rx_queue.queue_addr = kmalloc(adapter->rx_queue.queue_len, GFP_KERNEL); | |
478 | ||
479 | if(!adapter->rx_queue.queue_addr) { | |
480 | ibmveth_error_printk("unable to allocate rx queue pages\n"); | |
481 | ibmveth_cleanup(adapter); | |
482 | return -ENOMEM; | |
483 | } | |
484 | ||
485 | adapter->buffer_list_dma = dma_map_single(&adapter->vdev->dev, | |
486 | adapter->buffer_list_addr, 4096, DMA_BIDIRECTIONAL); | |
487 | adapter->filter_list_dma = dma_map_single(&adapter->vdev->dev, | |
488 | adapter->filter_list_addr, 4096, DMA_BIDIRECTIONAL); | |
489 | adapter->rx_queue.queue_dma = dma_map_single(&adapter->vdev->dev, | |
490 | adapter->rx_queue.queue_addr, | |
491 | adapter->rx_queue.queue_len, DMA_BIDIRECTIONAL); | |
492 | ||
493 | if((dma_mapping_error(adapter->buffer_list_dma) ) || | |
494 | (dma_mapping_error(adapter->filter_list_dma)) || | |
495 | (dma_mapping_error(adapter->rx_queue.queue_dma))) { | |
496 | ibmveth_error_printk("unable to map filter or buffer list pages\n"); | |
497 | ibmveth_cleanup(adapter); | |
498 | return -ENOMEM; | |
499 | } | |
500 | ||
501 | adapter->rx_queue.index = 0; | |
502 | adapter->rx_queue.num_slots = rxq_entries; | |
503 | adapter->rx_queue.toggle = 1; | |
504 | ||
505 | if(ibmveth_alloc_buffer_pool(&adapter->rx_buff_pool[0]) || | |
506 | ibmveth_alloc_buffer_pool(&adapter->rx_buff_pool[1]) || | |
507 | ibmveth_alloc_buffer_pool(&adapter->rx_buff_pool[2])) | |
508 | { | |
509 | ibmveth_error_printk("unable to allocate buffer pools\n"); | |
510 | ibmveth_cleanup(adapter); | |
511 | return -ENOMEM; | |
512 | } | |
513 | ||
514 | memcpy(&mac_address, netdev->dev_addr, netdev->addr_len); | |
515 | mac_address = mac_address >> 16; | |
516 | ||
517 | rxq_desc.desc = 0; | |
518 | rxq_desc.fields.valid = 1; | |
519 | rxq_desc.fields.length = adapter->rx_queue.queue_len; | |
520 | rxq_desc.fields.address = adapter->rx_queue.queue_dma; | |
521 | ||
522 | ibmveth_debug_printk("buffer list @ 0x%p\n", adapter->buffer_list_addr); | |
523 | ibmveth_debug_printk("filter list @ 0x%p\n", adapter->filter_list_addr); | |
524 | ibmveth_debug_printk("receive q @ 0x%p\n", adapter->rx_queue.queue_addr); | |
525 | ||
526 | ||
527 | lpar_rc = h_register_logical_lan(adapter->vdev->unit_address, | |
528 | adapter->buffer_list_dma, | |
529 | rxq_desc.desc, | |
530 | adapter->filter_list_dma, | |
531 | mac_address); | |
532 | ||
533 | if(lpar_rc != H_Success) { | |
534 | ibmveth_error_printk("h_register_logical_lan failed with %ld\n", lpar_rc); | |
535 | ibmveth_error_printk("buffer TCE:0x%x filter TCE:0x%x rxq desc:0x%lx MAC:0x%lx\n", | |
536 | adapter->buffer_list_dma, | |
537 | adapter->filter_list_dma, | |
538 | rxq_desc.desc, | |
539 | mac_address); | |
540 | ibmveth_cleanup(adapter); | |
541 | return -ENONET; | |
542 | } | |
543 | ||
544 | ibmveth_debug_printk("registering irq 0x%x\n", netdev->irq); | |
545 | if((rc = request_irq(netdev->irq, &ibmveth_interrupt, 0, netdev->name, netdev)) != 0) { | |
546 | ibmveth_error_printk("unable to request irq 0x%x, rc %d\n", netdev->irq, rc); | |
547 | do { | |
548 | rc = h_free_logical_lan(adapter->vdev->unit_address); | |
549 | } while (H_isLongBusy(rc) || (rc == H_Busy)); | |
550 | ||
551 | ibmveth_cleanup(adapter); | |
552 | return rc; | |
553 | } | |
554 | ||
555 | netif_start_queue(netdev); | |
556 | ||
557 | ibmveth_debug_printk("scheduling initial replenish cycle\n"); | |
558 | ibmveth_schedule_replenishing(adapter); | |
559 | ||
560 | ibmveth_debug_printk("open complete\n"); | |
561 | ||
562 | return 0; | |
563 | } | |
564 | ||
565 | static int ibmveth_close(struct net_device *netdev) | |
566 | { | |
567 | struct ibmveth_adapter *adapter = netdev->priv; | |
568 | long lpar_rc; | |
569 | ||
570 | ibmveth_debug_printk("close starting\n"); | |
571 | ||
572 | netif_stop_queue(netdev); | |
573 | ||
574 | free_irq(netdev->irq, netdev); | |
575 | ||
576 | cancel_delayed_work(&adapter->replenish_task); | |
577 | flush_scheduled_work(); | |
578 | ||
579 | do { | |
580 | lpar_rc = h_free_logical_lan(adapter->vdev->unit_address); | |
581 | } while (H_isLongBusy(lpar_rc) || (lpar_rc == H_Busy)); | |
582 | ||
583 | if(lpar_rc != H_Success) | |
584 | { | |
585 | ibmveth_error_printk("h_free_logical_lan failed with %lx, continuing with close\n", | |
586 | lpar_rc); | |
587 | } | |
588 | ||
589 | adapter->rx_no_buffer = *(u64*)(((char*)adapter->buffer_list_addr) + 4096 - 8); | |
590 | ||
591 | ibmveth_cleanup(adapter); | |
592 | ||
593 | ibmveth_debug_printk("close complete\n"); | |
594 | ||
595 | return 0; | |
596 | } | |
597 | ||
598 | static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) { | |
599 | cmd->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE); | |
600 | cmd->advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg | ADVERTISED_FIBRE); | |
601 | cmd->speed = SPEED_1000; | |
602 | cmd->duplex = DUPLEX_FULL; | |
603 | cmd->port = PORT_FIBRE; | |
604 | cmd->phy_address = 0; | |
605 | cmd->transceiver = XCVR_INTERNAL; | |
606 | cmd->autoneg = AUTONEG_ENABLE; | |
607 | cmd->maxtxpkt = 0; | |
608 | cmd->maxrxpkt = 1; | |
609 | return 0; | |
610 | } | |
611 | ||
612 | static void netdev_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info) { | |
613 | strncpy(info->driver, ibmveth_driver_name, sizeof(info->driver) - 1); | |
614 | strncpy(info->version, ibmveth_driver_version, sizeof(info->version) - 1); | |
615 | } | |
616 | ||
617 | static u32 netdev_get_link(struct net_device *dev) { | |
618 | return 1; | |
619 | } | |
620 | ||
621 | static struct ethtool_ops netdev_ethtool_ops = { | |
622 | .get_drvinfo = netdev_get_drvinfo, | |
623 | .get_settings = netdev_get_settings, | |
624 | .get_link = netdev_get_link, | |
625 | .get_sg = ethtool_op_get_sg, | |
626 | .get_tx_csum = ethtool_op_get_tx_csum, | |
627 | }; | |
628 | ||
629 | static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
630 | { | |
631 | return -EOPNOTSUPP; | |
632 | } | |
633 | ||
634 | #define page_offset(v) ((unsigned long)(v) & ((1 << 12) - 1)) | |
635 | ||
636 | static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *netdev) | |
637 | { | |
638 | struct ibmveth_adapter *adapter = netdev->priv; | |
639 | union ibmveth_buf_desc desc[IbmVethMaxSendFrags]; | |
640 | unsigned long lpar_rc; | |
641 | int nfrags = 0, curfrag; | |
642 | unsigned long correlator; | |
643 | unsigned int retry_count; | |
644 | ||
645 | if ((skb_shinfo(skb)->nr_frags + 1) > IbmVethMaxSendFrags) { | |
646 | adapter->stats.tx_dropped++; | |
647 | dev_kfree_skb(skb); | |
648 | return 0; | |
649 | } | |
650 | ||
651 | memset(&desc, 0, sizeof(desc)); | |
652 | ||
653 | /* nfrags = number of frags after the initial fragment */ | |
654 | nfrags = skb_shinfo(skb)->nr_frags; | |
655 | ||
656 | if(nfrags) | |
657 | adapter->tx_multidesc_send++; | |
658 | ||
659 | /* map the initial fragment */ | |
660 | desc[0].fields.length = nfrags ? skb->len - skb->data_len : skb->len; | |
661 | desc[0].fields.address = dma_map_single(&adapter->vdev->dev, skb->data, | |
662 | desc[0].fields.length, DMA_TO_DEVICE); | |
663 | desc[0].fields.valid = 1; | |
664 | ||
665 | if(dma_mapping_error(desc[0].fields.address)) { | |
666 | ibmveth_error_printk("tx: unable to map initial fragment\n"); | |
667 | adapter->tx_map_failed++; | |
668 | adapter->stats.tx_dropped++; | |
669 | dev_kfree_skb(skb); | |
670 | return 0; | |
671 | } | |
672 | ||
673 | curfrag = nfrags; | |
674 | ||
675 | /* map fragments past the initial portion if there are any */ | |
676 | while(curfrag--) { | |
677 | skb_frag_t *frag = &skb_shinfo(skb)->frags[curfrag]; | |
678 | desc[curfrag+1].fields.address | |
679 | = dma_map_single(&adapter->vdev->dev, | |
680 | page_address(frag->page) + frag->page_offset, | |
681 | frag->size, DMA_TO_DEVICE); | |
682 | desc[curfrag+1].fields.length = frag->size; | |
683 | desc[curfrag+1].fields.valid = 1; | |
684 | ||
685 | if(dma_mapping_error(desc[curfrag+1].fields.address)) { | |
686 | ibmveth_error_printk("tx: unable to map fragment %d\n", curfrag); | |
687 | adapter->tx_map_failed++; | |
688 | adapter->stats.tx_dropped++; | |
689 | /* Free all the mappings we just created */ | |
690 | while(curfrag < nfrags) { | |
691 | dma_unmap_single(&adapter->vdev->dev, | |
692 | desc[curfrag+1].fields.address, | |
693 | desc[curfrag+1].fields.length, | |
694 | DMA_TO_DEVICE); | |
695 | curfrag++; | |
696 | } | |
697 | dev_kfree_skb(skb); | |
698 | return 0; | |
699 | } | |
700 | } | |
701 | ||
702 | /* send the frame. Arbitrarily set retrycount to 1024 */ | |
703 | correlator = 0; | |
704 | retry_count = 1024; | |
705 | do { | |
706 | lpar_rc = h_send_logical_lan(adapter->vdev->unit_address, | |
707 | desc[0].desc, | |
708 | desc[1].desc, | |
709 | desc[2].desc, | |
710 | desc[3].desc, | |
711 | desc[4].desc, | |
712 | desc[5].desc, | |
713 | correlator); | |
714 | } while ((lpar_rc == H_Busy) && (retry_count--)); | |
715 | ||
716 | if(lpar_rc != H_Success && lpar_rc != H_Dropped) { | |
717 | int i; | |
718 | ibmveth_error_printk("tx: h_send_logical_lan failed with rc=%ld\n", lpar_rc); | |
719 | for(i = 0; i < 6; i++) { | |
720 | ibmveth_error_printk("tx: desc[%i] valid=%d, len=%d, address=0x%d\n", i, | |
721 | desc[i].fields.valid, desc[i].fields.length, desc[i].fields.address); | |
722 | } | |
723 | adapter->tx_send_failed++; | |
724 | adapter->stats.tx_dropped++; | |
725 | } else { | |
726 | adapter->stats.tx_packets++; | |
727 | adapter->stats.tx_bytes += skb->len; | |
728 | } | |
729 | ||
730 | do { | |
731 | dma_unmap_single(&adapter->vdev->dev, | |
732 | desc[nfrags].fields.address, | |
733 | desc[nfrags].fields.length, DMA_TO_DEVICE); | |
734 | } while(--nfrags >= 0); | |
735 | ||
736 | dev_kfree_skb(skb); | |
737 | return 0; | |
738 | } | |
739 | ||
740 | static int ibmveth_poll(struct net_device *netdev, int *budget) | |
741 | { | |
742 | struct ibmveth_adapter *adapter = netdev->priv; | |
743 | int max_frames_to_process = netdev->quota; | |
744 | int frames_processed = 0; | |
745 | int more_work = 1; | |
746 | unsigned long lpar_rc; | |
747 | ||
748 | restart_poll: | |
749 | do { | |
750 | struct net_device *netdev = adapter->netdev; | |
751 | ||
752 | if(ibmveth_rxq_pending_buffer(adapter)) { | |
753 | struct sk_buff *skb; | |
754 | ||
755 | rmb(); | |
756 | ||
757 | if(!ibmveth_rxq_buffer_valid(adapter)) { | |
758 | wmb(); /* suggested by larson1 */ | |
759 | adapter->rx_invalid_buffer++; | |
760 | ibmveth_debug_printk("recycling invalid buffer\n"); | |
761 | ibmveth_rxq_recycle_buffer(adapter); | |
762 | } else { | |
763 | int length = ibmveth_rxq_frame_length(adapter); | |
764 | int offset = ibmveth_rxq_frame_offset(adapter); | |
765 | skb = ibmveth_rxq_get_buffer(adapter); | |
766 | ||
767 | ibmveth_rxq_harvest_buffer(adapter); | |
768 | ||
769 | skb_reserve(skb, offset); | |
770 | skb_put(skb, length); | |
771 | skb->dev = netdev; | |
772 | skb->protocol = eth_type_trans(skb, netdev); | |
773 | ||
774 | netif_receive_skb(skb); /* send it up */ | |
775 | ||
776 | adapter->stats.rx_packets++; | |
777 | adapter->stats.rx_bytes += length; | |
778 | frames_processed++; | |
779 | } | |
780 | } else { | |
781 | more_work = 0; | |
782 | } | |
783 | } while(more_work && (frames_processed < max_frames_to_process)); | |
784 | ||
785 | ibmveth_schedule_replenishing(adapter); | |
786 | ||
787 | if(more_work) { | |
788 | /* more work to do - return that we are not done yet */ | |
789 | netdev->quota -= frames_processed; | |
790 | *budget -= frames_processed; | |
791 | return 1; | |
792 | } | |
793 | ||
794 | /* we think we are done - reenable interrupts, then check once more to make sure we are done */ | |
795 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_ENABLE); | |
796 | ||
797 | ibmveth_assert(lpar_rc == H_Success); | |
798 | ||
799 | netif_rx_complete(netdev); | |
800 | ||
801 | if(ibmveth_rxq_pending_buffer(adapter) && netif_rx_reschedule(netdev, frames_processed)) | |
802 | { | |
803 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE); | |
804 | ibmveth_assert(lpar_rc == H_Success); | |
805 | more_work = 1; | |
806 | goto restart_poll; | |
807 | } | |
808 | ||
809 | netdev->quota -= frames_processed; | |
810 | *budget -= frames_processed; | |
811 | ||
812 | /* we really are done */ | |
813 | return 0; | |
814 | } | |
815 | ||
816 | static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance, struct pt_regs *regs) | |
817 | { | |
818 | struct net_device *netdev = dev_instance; | |
819 | struct ibmveth_adapter *adapter = netdev->priv; | |
820 | unsigned long lpar_rc; | |
821 | ||
822 | if(netif_rx_schedule_prep(netdev)) { | |
823 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE); | |
824 | ibmveth_assert(lpar_rc == H_Success); | |
825 | __netif_rx_schedule(netdev); | |
826 | } | |
827 | return IRQ_HANDLED; | |
828 | } | |
829 | ||
830 | static struct net_device_stats *ibmveth_get_stats(struct net_device *dev) | |
831 | { | |
832 | struct ibmveth_adapter *adapter = dev->priv; | |
833 | return &adapter->stats; | |
834 | } | |
835 | ||
836 | static void ibmveth_set_multicast_list(struct net_device *netdev) | |
837 | { | |
838 | struct ibmveth_adapter *adapter = netdev->priv; | |
839 | unsigned long lpar_rc; | |
840 | ||
841 | if((netdev->flags & IFF_PROMISC) || (netdev->mc_count > adapter->mcastFilterSize)) { | |
842 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, | |
843 | IbmVethMcastEnableRecv | | |
844 | IbmVethMcastDisableFiltering, | |
845 | 0); | |
846 | if(lpar_rc != H_Success) { | |
847 | ibmveth_error_printk("h_multicast_ctrl rc=%ld when entering promisc mode\n", lpar_rc); | |
848 | } | |
849 | } else { | |
850 | struct dev_mc_list *mclist = netdev->mc_list; | |
851 | int i; | |
852 | /* clear the filter table & disable filtering */ | |
853 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, | |
854 | IbmVethMcastEnableRecv | | |
855 | IbmVethMcastDisableFiltering | | |
856 | IbmVethMcastClearFilterTable, | |
857 | 0); | |
858 | if(lpar_rc != H_Success) { | |
859 | ibmveth_error_printk("h_multicast_ctrl rc=%ld when attempting to clear filter table\n", lpar_rc); | |
860 | } | |
861 | /* add the addresses to the filter table */ | |
862 | for(i = 0; i < netdev->mc_count; ++i, mclist = mclist->next) { | |
863 | // add the multicast address to the filter table | |
864 | unsigned long mcast_addr = 0; | |
865 | memcpy(((char *)&mcast_addr)+2, mclist->dmi_addr, 6); | |
866 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, | |
867 | IbmVethMcastAddFilter, | |
868 | mcast_addr); | |
869 | if(lpar_rc != H_Success) { | |
870 | ibmveth_error_printk("h_multicast_ctrl rc=%ld when adding an entry to the filter table\n", lpar_rc); | |
871 | } | |
872 | } | |
873 | ||
874 | /* re-enable filtering */ | |
875 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, | |
876 | IbmVethMcastEnableFiltering, | |
877 | 0); | |
878 | if(lpar_rc != H_Success) { | |
879 | ibmveth_error_printk("h_multicast_ctrl rc=%ld when enabling filtering\n", lpar_rc); | |
880 | } | |
881 | } | |
882 | } | |
883 | ||
884 | static int ibmveth_change_mtu(struct net_device *dev, int new_mtu) | |
885 | { | |
886 | if ((new_mtu < 68) || (new_mtu > (1<<20))) | |
887 | return -EINVAL; | |
888 | dev->mtu = new_mtu; | |
889 | return 0; | |
890 | } | |
891 | ||
892 | static int __devinit ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id) | |
893 | { | |
894 | int rc; | |
895 | struct net_device *netdev; | |
896 | struct ibmveth_adapter *adapter; | |
897 | ||
898 | unsigned char *mac_addr_p; | |
899 | unsigned int *mcastFilterSize_p; | |
900 | ||
901 | ||
902 | ibmveth_debug_printk_no_adapter("entering ibmveth_probe for UA 0x%x\n", | |
903 | dev->unit_address); | |
904 | ||
905 | mac_addr_p = (unsigned char *) vio_get_attribute(dev, VETH_MAC_ADDR, 0); | |
906 | if(!mac_addr_p) { | |
907 | printk(KERN_ERR "(%s:%3.3d) ERROR: Can't find VETH_MAC_ADDR " | |
908 | "attribute\n", __FILE__, __LINE__); | |
909 | return 0; | |
910 | } | |
911 | ||
912 | mcastFilterSize_p= (unsigned int *) vio_get_attribute(dev, VETH_MCAST_FILTER_SIZE, 0); | |
913 | if(!mcastFilterSize_p) { | |
914 | printk(KERN_ERR "(%s:%3.3d) ERROR: Can't find " | |
915 | "VETH_MCAST_FILTER_SIZE attribute\n", | |
916 | __FILE__, __LINE__); | |
917 | return 0; | |
918 | } | |
919 | ||
920 | netdev = alloc_etherdev(sizeof(struct ibmveth_adapter)); | |
921 | ||
922 | if(!netdev) | |
923 | return -ENOMEM; | |
924 | ||
925 | SET_MODULE_OWNER(netdev); | |
926 | ||
927 | adapter = netdev->priv; | |
928 | memset(adapter, 0, sizeof(adapter)); | |
929 | dev->dev.driver_data = netdev; | |
930 | ||
931 | adapter->vdev = dev; | |
932 | adapter->netdev = netdev; | |
933 | adapter->mcastFilterSize= *mcastFilterSize_p; | |
934 | ||
935 | /* Some older boxes running PHYP non-natively have an OF that | |
936 | returns a 8-byte local-mac-address field (and the first | |
937 | 2 bytes have to be ignored) while newer boxes' OF return | |
938 | a 6-byte field. Note that IEEE 1275 specifies that | |
939 | local-mac-address must be a 6-byte field. | |
940 | The RPA doc specifies that the first byte must be 10b, so | |
941 | we'll just look for it to solve this 8 vs. 6 byte field issue */ | |
942 | ||
943 | if ((*mac_addr_p & 0x3) != 0x02) | |
944 | mac_addr_p += 2; | |
945 | ||
946 | adapter->mac_addr = 0; | |
947 | memcpy(&adapter->mac_addr, mac_addr_p, 6); | |
948 | ||
949 | adapter->liobn = dev->iommu_table->it_index; | |
950 | ||
951 | netdev->irq = dev->irq; | |
952 | netdev->open = ibmveth_open; | |
953 | netdev->poll = ibmveth_poll; | |
954 | netdev->weight = 16; | |
955 | netdev->stop = ibmveth_close; | |
956 | netdev->hard_start_xmit = ibmveth_start_xmit; | |
957 | netdev->get_stats = ibmveth_get_stats; | |
958 | netdev->set_multicast_list = ibmveth_set_multicast_list; | |
959 | netdev->do_ioctl = ibmveth_ioctl; | |
960 | netdev->ethtool_ops = &netdev_ethtool_ops; | |
961 | netdev->change_mtu = ibmveth_change_mtu; | |
962 | SET_NETDEV_DEV(netdev, &dev->dev); | |
963 | ||
964 | memcpy(&netdev->dev_addr, &adapter->mac_addr, netdev->addr_len); | |
965 | ||
966 | ibmveth_init_buffer_pool(&adapter->rx_buff_pool[0], 0, IbmVethPool0DftCnt, IbmVethPool0DftSize); | |
967 | ibmveth_init_buffer_pool(&adapter->rx_buff_pool[1], 1, IbmVethPool1DftCnt, IbmVethPool1DftSize); | |
968 | ibmveth_init_buffer_pool(&adapter->rx_buff_pool[2], 2, IbmVethPool2DftCnt, IbmVethPool2DftSize); | |
969 | ||
970 | ibmveth_debug_printk("adapter @ 0x%p\n", adapter); | |
971 | ||
972 | INIT_WORK(&adapter->replenish_task, (void*)ibmveth_replenish_task, (void*)adapter); | |
973 | ||
974 | adapter->buffer_list_dma = DMA_ERROR_CODE; | |
975 | adapter->filter_list_dma = DMA_ERROR_CODE; | |
976 | adapter->rx_queue.queue_dma = DMA_ERROR_CODE; | |
977 | ||
978 | atomic_set(&adapter->not_replenishing, 1); | |
979 | ||
980 | ibmveth_debug_printk("registering netdev...\n"); | |
981 | ||
982 | rc = register_netdev(netdev); | |
983 | ||
984 | if(rc) { | |
985 | ibmveth_debug_printk("failed to register netdev rc=%d\n", rc); | |
986 | free_netdev(netdev); | |
987 | return rc; | |
988 | } | |
989 | ||
990 | ibmveth_debug_printk("registered\n"); | |
991 | ||
992 | ibmveth_proc_register_adapter(adapter); | |
993 | ||
994 | return 0; | |
995 | } | |
996 | ||
997 | static int __devexit ibmveth_remove(struct vio_dev *dev) | |
998 | { | |
999 | struct net_device *netdev = dev->dev.driver_data; | |
1000 | struct ibmveth_adapter *adapter = netdev->priv; | |
1001 | ||
1002 | unregister_netdev(netdev); | |
1003 | ||
1004 | ibmveth_proc_unregister_adapter(adapter); | |
1005 | ||
1006 | free_netdev(netdev); | |
1007 | return 0; | |
1008 | } | |
1009 | ||
1010 | #ifdef CONFIG_PROC_FS | |
1011 | static void ibmveth_proc_register_driver(void) | |
1012 | { | |
1013 | ibmveth_proc_dir = create_proc_entry(IBMVETH_PROC_DIR, S_IFDIR, proc_net); | |
1014 | if (ibmveth_proc_dir) { | |
1015 | SET_MODULE_OWNER(ibmveth_proc_dir); | |
1016 | } | |
1017 | } | |
1018 | ||
1019 | static void ibmveth_proc_unregister_driver(void) | |
1020 | { | |
1021 | remove_proc_entry(IBMVETH_PROC_DIR, proc_net); | |
1022 | } | |
1023 | ||
1024 | static void *ibmveth_seq_start(struct seq_file *seq, loff_t *pos) | |
1025 | { | |
1026 | if (*pos == 0) { | |
1027 | return (void *)1; | |
1028 | } else { | |
1029 | return NULL; | |
1030 | } | |
1031 | } | |
1032 | ||
1033 | static void *ibmveth_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
1034 | { | |
1035 | ++*pos; | |
1036 | return NULL; | |
1037 | } | |
1038 | ||
1039 | static void ibmveth_seq_stop(struct seq_file *seq, void *v) | |
1040 | { | |
1041 | } | |
1042 | ||
1043 | static int ibmveth_seq_show(struct seq_file *seq, void *v) | |
1044 | { | |
1045 | struct ibmveth_adapter *adapter = seq->private; | |
1046 | char *current_mac = ((char*) &adapter->netdev->dev_addr); | |
1047 | char *firmware_mac = ((char*) &adapter->mac_addr) ; | |
1048 | ||
1049 | seq_printf(seq, "%s %s\n\n", ibmveth_driver_string, ibmveth_driver_version); | |
1050 | ||
1051 | seq_printf(seq, "Unit Address: 0x%x\n", adapter->vdev->unit_address); | |
1052 | seq_printf(seq, "LIOBN: 0x%lx\n", adapter->liobn); | |
1053 | seq_printf(seq, "Current MAC: %02X:%02X:%02X:%02X:%02X:%02X\n", | |
1054 | current_mac[0], current_mac[1], current_mac[2], | |
1055 | current_mac[3], current_mac[4], current_mac[5]); | |
1056 | seq_printf(seq, "Firmware MAC: %02X:%02X:%02X:%02X:%02X:%02X\n", | |
1057 | firmware_mac[0], firmware_mac[1], firmware_mac[2], | |
1058 | firmware_mac[3], firmware_mac[4], firmware_mac[5]); | |
1059 | ||
1060 | seq_printf(seq, "\nAdapter Statistics:\n"); | |
1061 | seq_printf(seq, " TX: skbuffs linearized: %ld\n", adapter->tx_linearized); | |
1062 | seq_printf(seq, " multi-descriptor sends: %ld\n", adapter->tx_multidesc_send); | |
1063 | seq_printf(seq, " skb_linearize failures: %ld\n", adapter->tx_linearize_failed); | |
1064 | seq_printf(seq, " vio_map_single failres: %ld\n", adapter->tx_map_failed); | |
1065 | seq_printf(seq, " send failures: %ld\n", adapter->tx_send_failed); | |
1066 | seq_printf(seq, " RX: replenish task cycles: %ld\n", adapter->replenish_task_cycles); | |
1067 | seq_printf(seq, " alloc_skb_failures: %ld\n", adapter->replenish_no_mem); | |
1068 | seq_printf(seq, " add buffer failures: %ld\n", adapter->replenish_add_buff_failure); | |
1069 | seq_printf(seq, " invalid buffers: %ld\n", adapter->rx_invalid_buffer); | |
1070 | seq_printf(seq, " no buffers: %ld\n", adapter->rx_no_buffer); | |
1071 | ||
1072 | return 0; | |
1073 | } | |
1074 | static struct seq_operations ibmveth_seq_ops = { | |
1075 | .start = ibmveth_seq_start, | |
1076 | .next = ibmveth_seq_next, | |
1077 | .stop = ibmveth_seq_stop, | |
1078 | .show = ibmveth_seq_show, | |
1079 | }; | |
1080 | ||
1081 | static int ibmveth_proc_open(struct inode *inode, struct file *file) | |
1082 | { | |
1083 | struct seq_file *seq; | |
1084 | struct proc_dir_entry *proc; | |
1085 | int rc; | |
1086 | ||
1087 | rc = seq_open(file, &ibmveth_seq_ops); | |
1088 | if (!rc) { | |
1089 | /* recover the pointer buried in proc_dir_entry data */ | |
1090 | seq = file->private_data; | |
1091 | proc = PDE(inode); | |
1092 | seq->private = proc->data; | |
1093 | } | |
1094 | return rc; | |
1095 | } | |
1096 | ||
1097 | static struct file_operations ibmveth_proc_fops = { | |
1098 | .owner = THIS_MODULE, | |
1099 | .open = ibmveth_proc_open, | |
1100 | .read = seq_read, | |
1101 | .llseek = seq_lseek, | |
1102 | .release = seq_release, | |
1103 | }; | |
1104 | ||
1105 | static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter) | |
1106 | { | |
1107 | struct proc_dir_entry *entry; | |
1108 | if (ibmveth_proc_dir) { | |
1109 | entry = create_proc_entry(adapter->netdev->name, S_IFREG, ibmveth_proc_dir); | |
1110 | if (!entry) { | |
1111 | ibmveth_error_printk("Cannot create adapter proc entry"); | |
1112 | } else { | |
1113 | entry->data = (void *) adapter; | |
1114 | entry->proc_fops = &ibmveth_proc_fops; | |
1115 | SET_MODULE_OWNER(entry); | |
1116 | } | |
1117 | } | |
1118 | return; | |
1119 | } | |
1120 | ||
1121 | static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter) | |
1122 | { | |
1123 | if (ibmveth_proc_dir) { | |
1124 | remove_proc_entry(adapter->netdev->name, ibmveth_proc_dir); | |
1125 | } | |
1126 | } | |
1127 | ||
1128 | #else /* CONFIG_PROC_FS */ | |
1129 | static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter) | |
1130 | { | |
1131 | } | |
1132 | ||
1133 | static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter) | |
1134 | { | |
1135 | } | |
1136 | static void ibmveth_proc_register_driver(void) | |
1137 | { | |
1138 | } | |
1139 | ||
1140 | static void ibmveth_proc_unregister_driver(void) | |
1141 | { | |
1142 | } | |
1143 | #endif /* CONFIG_PROC_FS */ | |
1144 | ||
1145 | static struct vio_device_id ibmveth_device_table[] __devinitdata= { | |
1146 | { "network", "IBM,l-lan"}, | |
fb120da6 | 1147 | { "", "" } |
1da177e4 LT |
1148 | }; |
1149 | ||
1150 | MODULE_DEVICE_TABLE(vio, ibmveth_device_table); | |
1151 | ||
1152 | static struct vio_driver ibmveth_driver = { | |
1153 | .name = (char *)ibmveth_driver_name, | |
1154 | .id_table = ibmveth_device_table, | |
1155 | .probe = ibmveth_probe, | |
1156 | .remove = ibmveth_remove | |
1157 | }; | |
1158 | ||
1159 | static int __init ibmveth_module_init(void) | |
1160 | { | |
1161 | ibmveth_printk("%s: %s %s\n", ibmveth_driver_name, ibmveth_driver_string, ibmveth_driver_version); | |
1162 | ||
1163 | ibmveth_proc_register_driver(); | |
1164 | ||
1165 | return vio_register_driver(&ibmveth_driver); | |
1166 | } | |
1167 | ||
1168 | static void __exit ibmveth_module_exit(void) | |
1169 | { | |
1170 | vio_unregister_driver(&ibmveth_driver); | |
1171 | ibmveth_proc_unregister_driver(); | |
1172 | } | |
1173 | ||
1174 | module_init(ibmveth_module_init); | |
1175 | module_exit(ibmveth_module_exit); |