Commit | Line | Data |
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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. */ | |
d7fbeba6 | 27 | /* */ |
1da177e4 LT |
28 | /**************************************************************************/ |
29 | /* | |
30 | TODO: | |
1da177e4 LT |
31 | - add support for sysfs |
32 | - possibly remove procfs support | |
33 | */ | |
34 | ||
1da177e4 | 35 | #include <linux/module.h> |
1096d63d | 36 | #include <linux/moduleparam.h> |
1da177e4 LT |
37 | #include <linux/types.h> |
38 | #include <linux/errno.h> | |
39 | #include <linux/ioport.h> | |
40 | #include <linux/dma-mapping.h> | |
41 | #include <linux/kernel.h> | |
42 | #include <linux/netdevice.h> | |
43 | #include <linux/etherdevice.h> | |
44 | #include <linux/skbuff.h> | |
45 | #include <linux/init.h> | |
46 | #include <linux/delay.h> | |
47 | #include <linux/mm.h> | |
48 | #include <linux/ethtool.h> | |
49 | #include <linux/proc_fs.h> | |
f4ff2872 BK |
50 | #include <linux/in.h> |
51 | #include <linux/ip.h> | |
457c4cbc | 52 | #include <net/net_namespace.h> |
1da177e4 LT |
53 | #include <asm/hvcall.h> |
54 | #include <asm/atomic.h> | |
1da177e4 | 55 | #include <asm/vio.h> |
1096d63d | 56 | #include <asm/iommu.h> |
1da177e4 | 57 | #include <asm/uaccess.h> |
1096d63d | 58 | #include <asm/firmware.h> |
1da177e4 LT |
59 | #include <linux/seq_file.h> |
60 | ||
61 | #include "ibmveth.h" | |
62 | ||
6af37fa9 | 63 | #undef DEBUG |
1da177e4 LT |
64 | |
65 | #define ibmveth_printk(fmt, args...) \ | |
f98baffb | 66 | printk(KERN_DEBUG "%s: " fmt, __FILE__, ## args) |
1da177e4 LT |
67 | |
68 | #define ibmveth_error_printk(fmt, args...) \ | |
69 | printk(KERN_ERR "(%s:%3.3d ua:%x) ERROR: " fmt, __FILE__, __LINE__ , adapter->vdev->unit_address, ## args) | |
70 | ||
71 | #ifdef DEBUG | |
72 | #define ibmveth_debug_printk_no_adapter(fmt, args...) \ | |
73 | printk(KERN_DEBUG "(%s:%3.3d): " fmt, __FILE__, __LINE__ , ## args) | |
74 | #define ibmveth_debug_printk(fmt, args...) \ | |
75 | printk(KERN_DEBUG "(%s:%3.3d ua:%x): " fmt, __FILE__, __LINE__ , adapter->vdev->unit_address, ## args) | |
76 | #define ibmveth_assert(expr) \ | |
77 | if(!(expr)) { \ | |
78 | printk(KERN_DEBUG "assertion failed (%s:%3.3d ua:%x): %s\n", __FILE__, __LINE__, adapter->vdev->unit_address, #expr); \ | |
79 | BUG(); \ | |
80 | } | |
81 | #else | |
82 | #define ibmveth_debug_printk_no_adapter(fmt, args...) | |
83 | #define ibmveth_debug_printk(fmt, args...) | |
d7fbeba6 | 84 | #define ibmveth_assert(expr) |
1da177e4 LT |
85 | #endif |
86 | ||
87 | static int ibmveth_open(struct net_device *dev); | |
88 | static int ibmveth_close(struct net_device *dev); | |
89 | static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd); | |
bea3348e | 90 | static int ibmveth_poll(struct napi_struct *napi, int budget); |
1da177e4 | 91 | static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *dev); |
1da177e4 LT |
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); | |
7d12e780 | 98 | static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance); |
493a684a | 99 | static void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter); |
1096d63d | 100 | static unsigned long ibmveth_get_desired_dma(struct vio_dev *vdev); |
860f242e | 101 | static struct kobj_type ktype_veth_pool; |
1da177e4 | 102 | |
1096d63d | 103 | |
1da177e4 | 104 | #ifdef CONFIG_PROC_FS |
457c4cbc | 105 | #define IBMVETH_PROC_DIR "ibmveth" |
1da177e4 LT |
106 | static struct proc_dir_entry *ibmveth_proc_dir; |
107 | #endif | |
108 | ||
109 | static const char ibmveth_driver_name[] = "ibmveth"; | |
110 | static const char ibmveth_driver_string[] = "IBM i/pSeries Virtual Ethernet Driver"; | |
111 | #define ibmveth_driver_version "1.03" | |
112 | ||
113 | MODULE_AUTHOR("Santiago Leon <santil@us.ibm.com>"); | |
114 | MODULE_DESCRIPTION("IBM i/pSeries Virtual Ethernet Driver"); | |
115 | MODULE_LICENSE("GPL"); | |
116 | MODULE_VERSION(ibmveth_driver_version); | |
117 | ||
ddbb4de9 BK |
118 | struct ibmveth_stat { |
119 | char name[ETH_GSTRING_LEN]; | |
120 | int offset; | |
121 | }; | |
122 | ||
123 | #define IBMVETH_STAT_OFF(stat) offsetof(struct ibmveth_adapter, stat) | |
124 | #define IBMVETH_GET_STAT(a, off) *((u64 *)(((unsigned long)(a)) + off)) | |
125 | ||
126 | struct ibmveth_stat ibmveth_stats[] = { | |
127 | { "replenish_task_cycles", IBMVETH_STAT_OFF(replenish_task_cycles) }, | |
128 | { "replenish_no_mem", IBMVETH_STAT_OFF(replenish_no_mem) }, | |
129 | { "replenish_add_buff_failure", IBMVETH_STAT_OFF(replenish_add_buff_failure) }, | |
130 | { "replenish_add_buff_success", IBMVETH_STAT_OFF(replenish_add_buff_success) }, | |
131 | { "rx_invalid_buffer", IBMVETH_STAT_OFF(rx_invalid_buffer) }, | |
132 | { "rx_no_buffer", IBMVETH_STAT_OFF(rx_no_buffer) }, | |
ddbb4de9 BK |
133 | { "tx_map_failed", IBMVETH_STAT_OFF(tx_map_failed) }, |
134 | { "tx_send_failed", IBMVETH_STAT_OFF(tx_send_failed) }, | |
135 | }; | |
136 | ||
1da177e4 | 137 | /* simple methods of getting data from the current rxq entry */ |
79ef4a4d BK |
138 | static inline u32 ibmveth_rxq_flags(struct ibmveth_adapter *adapter) |
139 | { | |
140 | return adapter->rx_queue.queue_addr[adapter->rx_queue.index].flags_off; | |
141 | } | |
142 | ||
143 | static inline int ibmveth_rxq_toggle(struct ibmveth_adapter *adapter) | |
144 | { | |
145 | return (ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_TOGGLE) >> IBMVETH_RXQ_TOGGLE_SHIFT; | |
146 | } | |
147 | ||
1da177e4 LT |
148 | static inline int ibmveth_rxq_pending_buffer(struct ibmveth_adapter *adapter) |
149 | { | |
79ef4a4d | 150 | return (ibmveth_rxq_toggle(adapter) == adapter->rx_queue.toggle); |
1da177e4 LT |
151 | } |
152 | ||
153 | static inline int ibmveth_rxq_buffer_valid(struct ibmveth_adapter *adapter) | |
154 | { | |
79ef4a4d | 155 | return (ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_VALID); |
1da177e4 LT |
156 | } |
157 | ||
158 | static inline int ibmveth_rxq_frame_offset(struct ibmveth_adapter *adapter) | |
159 | { | |
79ef4a4d | 160 | return (ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_OFF_MASK); |
1da177e4 LT |
161 | } |
162 | ||
163 | static inline int ibmveth_rxq_frame_length(struct ibmveth_adapter *adapter) | |
164 | { | |
165 | return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].length); | |
166 | } | |
167 | ||
f4ff2872 BK |
168 | static inline int ibmveth_rxq_csum_good(struct ibmveth_adapter *adapter) |
169 | { | |
79ef4a4d | 170 | return (ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_CSUM_GOOD); |
f4ff2872 BK |
171 | } |
172 | ||
1da177e4 | 173 | /* setup the initial settings for a buffer pool */ |
860f242e | 174 | static void ibmveth_init_buffer_pool(struct ibmveth_buff_pool *pool, u32 pool_index, u32 pool_size, u32 buff_size, u32 pool_active) |
1da177e4 LT |
175 | { |
176 | pool->size = pool_size; | |
177 | pool->index = pool_index; | |
178 | pool->buff_size = buff_size; | |
179 | pool->threshold = pool_size / 2; | |
860f242e | 180 | pool->active = pool_active; |
1da177e4 LT |
181 | } |
182 | ||
183 | /* allocate and setup an buffer pool - called during open */ | |
184 | static int ibmveth_alloc_buffer_pool(struct ibmveth_buff_pool *pool) | |
185 | { | |
186 | int i; | |
187 | ||
d7fbeba6 | 188 | pool->free_map = kmalloc(sizeof(u16) * pool->size, GFP_KERNEL); |
1da177e4 LT |
189 | |
190 | if(!pool->free_map) { | |
191 | return -1; | |
192 | } | |
193 | ||
d7fbeba6 | 194 | pool->dma_addr = kmalloc(sizeof(dma_addr_t) * pool->size, GFP_KERNEL); |
1da177e4 LT |
195 | if(!pool->dma_addr) { |
196 | kfree(pool->free_map); | |
197 | pool->free_map = NULL; | |
198 | return -1; | |
199 | } | |
200 | ||
201 | pool->skbuff = kmalloc(sizeof(void*) * pool->size, GFP_KERNEL); | |
202 | ||
203 | if(!pool->skbuff) { | |
204 | kfree(pool->dma_addr); | |
205 | pool->dma_addr = NULL; | |
206 | ||
207 | kfree(pool->free_map); | |
208 | pool->free_map = NULL; | |
209 | return -1; | |
210 | } | |
211 | ||
212 | memset(pool->skbuff, 0, sizeof(void*) * pool->size); | |
213 | memset(pool->dma_addr, 0, sizeof(dma_addr_t) * pool->size); | |
214 | ||
215 | for(i = 0; i < pool->size; ++i) { | |
216 | pool->free_map[i] = i; | |
217 | } | |
218 | ||
219 | atomic_set(&pool->available, 0); | |
220 | pool->producer_index = 0; | |
221 | pool->consumer_index = 0; | |
222 | ||
223 | return 0; | |
224 | } | |
225 | ||
226 | /* replenish the buffers for a pool. note that we don't need to | |
227 | * skb_reserve these since they are used for incoming... | |
228 | */ | |
229 | static void ibmveth_replenish_buffer_pool(struct ibmveth_adapter *adapter, struct ibmveth_buff_pool *pool) | |
230 | { | |
231 | u32 i; | |
232 | u32 count = pool->size - atomic_read(&pool->available); | |
233 | u32 buffers_added = 0; | |
1096d63d RJ |
234 | struct sk_buff *skb; |
235 | unsigned int free_index, index; | |
236 | u64 correlator; | |
237 | unsigned long lpar_rc; | |
238 | dma_addr_t dma_addr; | |
1da177e4 LT |
239 | |
240 | mb(); | |
241 | ||
242 | for(i = 0; i < count; ++i) { | |
1da177e4 | 243 | union ibmveth_buf_desc desc; |
1da177e4 LT |
244 | |
245 | skb = alloc_skb(pool->buff_size, GFP_ATOMIC); | |
246 | ||
247 | if(!skb) { | |
248 | ibmveth_debug_printk("replenish: unable to allocate skb\n"); | |
249 | adapter->replenish_no_mem++; | |
250 | break; | |
251 | } | |
252 | ||
047a66d4 DG |
253 | free_index = pool->consumer_index; |
254 | pool->consumer_index = (pool->consumer_index + 1) % pool->size; | |
1da177e4 | 255 | index = pool->free_map[free_index]; |
d7fbeba6 | 256 | |
1da177e4 LT |
257 | ibmveth_assert(index != IBM_VETH_INVALID_MAP); |
258 | ibmveth_assert(pool->skbuff[index] == NULL); | |
259 | ||
260 | dma_addr = dma_map_single(&adapter->vdev->dev, skb->data, | |
261 | pool->buff_size, DMA_FROM_DEVICE); | |
262 | ||
c713e7cb | 263 | if (dma_mapping_error(&adapter->vdev->dev, dma_addr)) |
1096d63d RJ |
264 | goto failure; |
265 | ||
1da177e4 LT |
266 | pool->free_map[free_index] = IBM_VETH_INVALID_MAP; |
267 | pool->dma_addr[index] = dma_addr; | |
268 | pool->skbuff[index] = skb; | |
269 | ||
270 | correlator = ((u64)pool->index << 32) | index; | |
271 | *(u64*)skb->data = correlator; | |
272 | ||
79ef4a4d | 273 | desc.fields.flags_len = IBMVETH_BUF_VALID | pool->buff_size; |
d7fbeba6 | 274 | desc.fields.address = dma_addr; |
1da177e4 LT |
275 | |
276 | lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc); | |
d7fbeba6 | 277 | |
1096d63d RJ |
278 | if (lpar_rc != H_SUCCESS) |
279 | goto failure; | |
280 | else { | |
1da177e4 LT |
281 | buffers_added++; |
282 | adapter->replenish_add_buff_success++; | |
283 | } | |
284 | } | |
d7fbeba6 | 285 | |
1096d63d RJ |
286 | mb(); |
287 | atomic_add(buffers_added, &(pool->available)); | |
288 | return; | |
289 | ||
290 | failure: | |
291 | pool->free_map[free_index] = index; | |
292 | pool->skbuff[index] = NULL; | |
293 | if (pool->consumer_index == 0) | |
294 | pool->consumer_index = pool->size - 1; | |
295 | else | |
296 | pool->consumer_index--; | |
c713e7cb | 297 | if (!dma_mapping_error(&adapter->vdev->dev, dma_addr)) |
1096d63d RJ |
298 | dma_unmap_single(&adapter->vdev->dev, |
299 | pool->dma_addr[index], pool->buff_size, | |
300 | DMA_FROM_DEVICE); | |
301 | dev_kfree_skb_any(skb); | |
302 | adapter->replenish_add_buff_failure++; | |
303 | ||
1da177e4 LT |
304 | mb(); |
305 | atomic_add(buffers_added, &(pool->available)); | |
306 | } | |
307 | ||
e2adbcb4 | 308 | /* replenish routine */ |
d7fbeba6 | 309 | static void ibmveth_replenish_task(struct ibmveth_adapter *adapter) |
1da177e4 | 310 | { |
b6d35182 SL |
311 | int i; |
312 | ||
1da177e4 LT |
313 | adapter->replenish_task_cycles++; |
314 | ||
1096d63d | 315 | for (i = (IbmVethNumBufferPools - 1); i >= 0; i--) |
b6d35182 | 316 | if(adapter->rx_buff_pool[i].active) |
d7fbeba6 | 317 | ibmveth_replenish_buffer_pool(adapter, |
b6d35182 | 318 | &adapter->rx_buff_pool[i]); |
1da177e4 LT |
319 | |
320 | adapter->rx_no_buffer = *(u64*)(((char*)adapter->buffer_list_addr) + 4096 - 8); | |
1da177e4 LT |
321 | } |
322 | ||
323 | /* empty and free ana buffer pool - also used to do cleanup in error paths */ | |
324 | static void ibmveth_free_buffer_pool(struct ibmveth_adapter *adapter, struct ibmveth_buff_pool *pool) | |
325 | { | |
326 | int i; | |
327 | ||
b4558ea9 JJ |
328 | kfree(pool->free_map); |
329 | pool->free_map = NULL; | |
1da177e4 LT |
330 | |
331 | if(pool->skbuff && pool->dma_addr) { | |
332 | for(i = 0; i < pool->size; ++i) { | |
333 | struct sk_buff *skb = pool->skbuff[i]; | |
334 | if(skb) { | |
335 | dma_unmap_single(&adapter->vdev->dev, | |
336 | pool->dma_addr[i], | |
337 | pool->buff_size, | |
338 | DMA_FROM_DEVICE); | |
339 | dev_kfree_skb_any(skb); | |
340 | pool->skbuff[i] = NULL; | |
341 | } | |
342 | } | |
343 | } | |
344 | ||
345 | if(pool->dma_addr) { | |
346 | kfree(pool->dma_addr); | |
347 | pool->dma_addr = NULL; | |
348 | } | |
349 | ||
350 | if(pool->skbuff) { | |
351 | kfree(pool->skbuff); | |
352 | pool->skbuff = NULL; | |
353 | } | |
354 | } | |
355 | ||
356 | /* remove a buffer from a pool */ | |
357 | static void ibmveth_remove_buffer_from_pool(struct ibmveth_adapter *adapter, u64 correlator) | |
358 | { | |
359 | unsigned int pool = correlator >> 32; | |
360 | unsigned int index = correlator & 0xffffffffUL; | |
361 | unsigned int free_index; | |
362 | struct sk_buff *skb; | |
363 | ||
364 | ibmveth_assert(pool < IbmVethNumBufferPools); | |
365 | ibmveth_assert(index < adapter->rx_buff_pool[pool].size); | |
366 | ||
367 | skb = adapter->rx_buff_pool[pool].skbuff[index]; | |
368 | ||
369 | ibmveth_assert(skb != NULL); | |
370 | ||
371 | adapter->rx_buff_pool[pool].skbuff[index] = NULL; | |
372 | ||
373 | dma_unmap_single(&adapter->vdev->dev, | |
374 | adapter->rx_buff_pool[pool].dma_addr[index], | |
375 | adapter->rx_buff_pool[pool].buff_size, | |
376 | DMA_FROM_DEVICE); | |
377 | ||
047a66d4 DG |
378 | free_index = adapter->rx_buff_pool[pool].producer_index; |
379 | adapter->rx_buff_pool[pool].producer_index | |
380 | = (adapter->rx_buff_pool[pool].producer_index + 1) | |
381 | % adapter->rx_buff_pool[pool].size; | |
1da177e4 LT |
382 | adapter->rx_buff_pool[pool].free_map[free_index] = index; |
383 | ||
384 | mb(); | |
385 | ||
386 | atomic_dec(&(adapter->rx_buff_pool[pool].available)); | |
387 | } | |
388 | ||
389 | /* get the current buffer on the rx queue */ | |
390 | static inline struct sk_buff *ibmveth_rxq_get_buffer(struct ibmveth_adapter *adapter) | |
391 | { | |
392 | u64 correlator = adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator; | |
393 | unsigned int pool = correlator >> 32; | |
394 | unsigned int index = correlator & 0xffffffffUL; | |
395 | ||
396 | ibmveth_assert(pool < IbmVethNumBufferPools); | |
397 | ibmveth_assert(index < adapter->rx_buff_pool[pool].size); | |
398 | ||
399 | return adapter->rx_buff_pool[pool].skbuff[index]; | |
400 | } | |
401 | ||
402 | /* recycle the current buffer on the rx queue */ | |
403 | static void ibmveth_rxq_recycle_buffer(struct ibmveth_adapter *adapter) | |
404 | { | |
405 | u32 q_index = adapter->rx_queue.index; | |
406 | u64 correlator = adapter->rx_queue.queue_addr[q_index].correlator; | |
407 | unsigned int pool = correlator >> 32; | |
408 | unsigned int index = correlator & 0xffffffffUL; | |
409 | union ibmveth_buf_desc desc; | |
410 | unsigned long lpar_rc; | |
411 | ||
412 | ibmveth_assert(pool < IbmVethNumBufferPools); | |
413 | ibmveth_assert(index < adapter->rx_buff_pool[pool].size); | |
414 | ||
b6d35182 SL |
415 | if(!adapter->rx_buff_pool[pool].active) { |
416 | ibmveth_rxq_harvest_buffer(adapter); | |
417 | ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[pool]); | |
418 | return; | |
419 | } | |
420 | ||
79ef4a4d BK |
421 | desc.fields.flags_len = IBMVETH_BUF_VALID | |
422 | adapter->rx_buff_pool[pool].buff_size; | |
1da177e4 LT |
423 | desc.fields.address = adapter->rx_buff_pool[pool].dma_addr[index]; |
424 | ||
425 | lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc); | |
d7fbeba6 | 426 | |
706c8c93 | 427 | if(lpar_rc != H_SUCCESS) { |
1da177e4 LT |
428 | ibmveth_debug_printk("h_add_logical_lan_buffer failed during recycle rc=%ld", lpar_rc); |
429 | ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator); | |
430 | } | |
431 | ||
432 | if(++adapter->rx_queue.index == adapter->rx_queue.num_slots) { | |
433 | adapter->rx_queue.index = 0; | |
434 | adapter->rx_queue.toggle = !adapter->rx_queue.toggle; | |
435 | } | |
436 | } | |
437 | ||
493a684a | 438 | static void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter) |
1da177e4 LT |
439 | { |
440 | ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator); | |
441 | ||
442 | if(++adapter->rx_queue.index == adapter->rx_queue.num_slots) { | |
443 | adapter->rx_queue.index = 0; | |
444 | adapter->rx_queue.toggle = !adapter->rx_queue.toggle; | |
445 | } | |
446 | } | |
447 | ||
448 | static void ibmveth_cleanup(struct ibmveth_adapter *adapter) | |
449 | { | |
b6d35182 | 450 | int i; |
8d8bb39b | 451 | struct device *dev = &adapter->vdev->dev; |
b6d35182 | 452 | |
1da177e4 | 453 | if(adapter->buffer_list_addr != NULL) { |
8d8bb39b FT |
454 | if (!dma_mapping_error(dev, adapter->buffer_list_dma)) { |
455 | dma_unmap_single(dev, adapter->buffer_list_dma, 4096, | |
1da177e4 LT |
456 | DMA_BIDIRECTIONAL); |
457 | adapter->buffer_list_dma = DMA_ERROR_CODE; | |
458 | } | |
459 | free_page((unsigned long)adapter->buffer_list_addr); | |
460 | adapter->buffer_list_addr = NULL; | |
d7fbeba6 | 461 | } |
1da177e4 LT |
462 | |
463 | if(adapter->filter_list_addr != NULL) { | |
8d8bb39b FT |
464 | if (!dma_mapping_error(dev, adapter->filter_list_dma)) { |
465 | dma_unmap_single(dev, adapter->filter_list_dma, 4096, | |
1da177e4 LT |
466 | DMA_BIDIRECTIONAL); |
467 | adapter->filter_list_dma = DMA_ERROR_CODE; | |
468 | } | |
469 | free_page((unsigned long)adapter->filter_list_addr); | |
470 | adapter->filter_list_addr = NULL; | |
471 | } | |
472 | ||
473 | if(adapter->rx_queue.queue_addr != NULL) { | |
8d8bb39b FT |
474 | if (!dma_mapping_error(dev, adapter->rx_queue.queue_dma)) { |
475 | dma_unmap_single(dev, | |
1da177e4 LT |
476 | adapter->rx_queue.queue_dma, |
477 | adapter->rx_queue.queue_len, | |
478 | DMA_BIDIRECTIONAL); | |
479 | adapter->rx_queue.queue_dma = DMA_ERROR_CODE; | |
480 | } | |
481 | kfree(adapter->rx_queue.queue_addr); | |
482 | adapter->rx_queue.queue_addr = NULL; | |
483 | } | |
484 | ||
b6d35182 | 485 | for(i = 0; i<IbmVethNumBufferPools; i++) |
860f242e | 486 | if (adapter->rx_buff_pool[i].active) |
d7fbeba6 | 487 | ibmveth_free_buffer_pool(adapter, |
860f242e | 488 | &adapter->rx_buff_pool[i]); |
1096d63d RJ |
489 | |
490 | if (adapter->bounce_buffer != NULL) { | |
c713e7cb | 491 | if (!dma_mapping_error(dev, adapter->bounce_buffer_dma)) { |
1096d63d RJ |
492 | dma_unmap_single(&adapter->vdev->dev, |
493 | adapter->bounce_buffer_dma, | |
494 | adapter->netdev->mtu + IBMVETH_BUFF_OH, | |
495 | DMA_BIDIRECTIONAL); | |
496 | adapter->bounce_buffer_dma = DMA_ERROR_CODE; | |
497 | } | |
498 | kfree(adapter->bounce_buffer); | |
499 | adapter->bounce_buffer = NULL; | |
500 | } | |
1da177e4 LT |
501 | } |
502 | ||
bbedefcc ME |
503 | static int ibmveth_register_logical_lan(struct ibmveth_adapter *adapter, |
504 | union ibmveth_buf_desc rxq_desc, u64 mac_address) | |
505 | { | |
506 | int rc, try_again = 1; | |
507 | ||
508 | /* After a kexec the adapter will still be open, so our attempt to | |
509 | * open it will fail. So if we get a failure we free the adapter and | |
510 | * try again, but only once. */ | |
511 | retry: | |
512 | rc = h_register_logical_lan(adapter->vdev->unit_address, | |
513 | adapter->buffer_list_dma, rxq_desc.desc, | |
514 | adapter->filter_list_dma, mac_address); | |
515 | ||
516 | if (rc != H_SUCCESS && try_again) { | |
517 | do { | |
518 | rc = h_free_logical_lan(adapter->vdev->unit_address); | |
519 | } while (H_IS_LONG_BUSY(rc) || (rc == H_BUSY)); | |
520 | ||
521 | try_again = 0; | |
522 | goto retry; | |
523 | } | |
524 | ||
525 | return rc; | |
526 | } | |
527 | ||
1da177e4 LT |
528 | static int ibmveth_open(struct net_device *netdev) |
529 | { | |
530 | struct ibmveth_adapter *adapter = netdev->priv; | |
531 | u64 mac_address = 0; | |
b6d35182 | 532 | int rxq_entries = 1; |
1da177e4 LT |
533 | unsigned long lpar_rc; |
534 | int rc; | |
535 | union ibmveth_buf_desc rxq_desc; | |
b6d35182 | 536 | int i; |
8d8bb39b | 537 | struct device *dev; |
1da177e4 LT |
538 | |
539 | ibmveth_debug_printk("open starting\n"); | |
540 | ||
bea3348e SH |
541 | napi_enable(&adapter->napi); |
542 | ||
b6d35182 SL |
543 | for(i = 0; i<IbmVethNumBufferPools; i++) |
544 | rxq_entries += adapter->rx_buff_pool[i].size; | |
d7fbeba6 | 545 | |
1da177e4 LT |
546 | adapter->buffer_list_addr = (void*) get_zeroed_page(GFP_KERNEL); |
547 | adapter->filter_list_addr = (void*) get_zeroed_page(GFP_KERNEL); | |
d7fbeba6 | 548 | |
1da177e4 LT |
549 | if(!adapter->buffer_list_addr || !adapter->filter_list_addr) { |
550 | ibmveth_error_printk("unable to allocate filter or buffer list pages\n"); | |
551 | ibmveth_cleanup(adapter); | |
bea3348e | 552 | napi_disable(&adapter->napi); |
1da177e4 LT |
553 | return -ENOMEM; |
554 | } | |
555 | ||
556 | adapter->rx_queue.queue_len = sizeof(struct ibmveth_rx_q_entry) * rxq_entries; | |
557 | adapter->rx_queue.queue_addr = kmalloc(adapter->rx_queue.queue_len, GFP_KERNEL); | |
558 | ||
559 | if(!adapter->rx_queue.queue_addr) { | |
560 | ibmveth_error_printk("unable to allocate rx queue pages\n"); | |
561 | ibmveth_cleanup(adapter); | |
bea3348e | 562 | napi_disable(&adapter->napi); |
1da177e4 LT |
563 | return -ENOMEM; |
564 | } | |
565 | ||
8d8bb39b FT |
566 | dev = &adapter->vdev->dev; |
567 | ||
568 | adapter->buffer_list_dma = dma_map_single(dev, | |
1da177e4 | 569 | adapter->buffer_list_addr, 4096, DMA_BIDIRECTIONAL); |
8d8bb39b | 570 | adapter->filter_list_dma = dma_map_single(dev, |
1da177e4 | 571 | adapter->filter_list_addr, 4096, DMA_BIDIRECTIONAL); |
8d8bb39b | 572 | adapter->rx_queue.queue_dma = dma_map_single(dev, |
1da177e4 LT |
573 | adapter->rx_queue.queue_addr, |
574 | adapter->rx_queue.queue_len, DMA_BIDIRECTIONAL); | |
575 | ||
8d8bb39b FT |
576 | if ((dma_mapping_error(dev, adapter->buffer_list_dma)) || |
577 | (dma_mapping_error(dev, adapter->filter_list_dma)) || | |
578 | (dma_mapping_error(dev, adapter->rx_queue.queue_dma))) { | |
1da177e4 LT |
579 | ibmveth_error_printk("unable to map filter or buffer list pages\n"); |
580 | ibmveth_cleanup(adapter); | |
bea3348e | 581 | napi_disable(&adapter->napi); |
1da177e4 LT |
582 | return -ENOMEM; |
583 | } | |
584 | ||
585 | adapter->rx_queue.index = 0; | |
586 | adapter->rx_queue.num_slots = rxq_entries; | |
587 | adapter->rx_queue.toggle = 1; | |
588 | ||
1da177e4 LT |
589 | memcpy(&mac_address, netdev->dev_addr, netdev->addr_len); |
590 | mac_address = mac_address >> 16; | |
591 | ||
79ef4a4d | 592 | rxq_desc.fields.flags_len = IBMVETH_BUF_VALID | adapter->rx_queue.queue_len; |
1da177e4 LT |
593 | rxq_desc.fields.address = adapter->rx_queue.queue_dma; |
594 | ||
595 | ibmveth_debug_printk("buffer list @ 0x%p\n", adapter->buffer_list_addr); | |
596 | ibmveth_debug_printk("filter list @ 0x%p\n", adapter->filter_list_addr); | |
597 | ibmveth_debug_printk("receive q @ 0x%p\n", adapter->rx_queue.queue_addr); | |
598 | ||
4347ef15 SL |
599 | h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE); |
600 | ||
bbedefcc | 601 | lpar_rc = ibmveth_register_logical_lan(adapter, rxq_desc, mac_address); |
1da177e4 | 602 | |
706c8c93 | 603 | if(lpar_rc != H_SUCCESS) { |
1da177e4 | 604 | ibmveth_error_printk("h_register_logical_lan failed with %ld\n", lpar_rc); |
8168f902 | 605 | ibmveth_error_printk("buffer TCE:0x%lx filter TCE:0x%lx rxq desc:0x%lx MAC:0x%lx\n", |
1da177e4 LT |
606 | adapter->buffer_list_dma, |
607 | adapter->filter_list_dma, | |
608 | rxq_desc.desc, | |
609 | mac_address); | |
610 | ibmveth_cleanup(adapter); | |
bea3348e | 611 | napi_disable(&adapter->napi); |
d7fbeba6 | 612 | return -ENONET; |
1da177e4 LT |
613 | } |
614 | ||
860f242e SL |
615 | for(i = 0; i<IbmVethNumBufferPools; i++) { |
616 | if(!adapter->rx_buff_pool[i].active) | |
617 | continue; | |
618 | if (ibmveth_alloc_buffer_pool(&adapter->rx_buff_pool[i])) { | |
619 | ibmveth_error_printk("unable to alloc pool\n"); | |
620 | adapter->rx_buff_pool[i].active = 0; | |
621 | ibmveth_cleanup(adapter); | |
bea3348e | 622 | napi_disable(&adapter->napi); |
860f242e SL |
623 | return -ENOMEM ; |
624 | } | |
625 | } | |
626 | ||
1da177e4 LT |
627 | ibmveth_debug_printk("registering irq 0x%x\n", netdev->irq); |
628 | if((rc = request_irq(netdev->irq, &ibmveth_interrupt, 0, netdev->name, netdev)) != 0) { | |
629 | ibmveth_error_printk("unable to request irq 0x%x, rc %d\n", netdev->irq, rc); | |
630 | do { | |
631 | rc = h_free_logical_lan(adapter->vdev->unit_address); | |
706c8c93 | 632 | } while (H_IS_LONG_BUSY(rc) || (rc == H_BUSY)); |
1da177e4 LT |
633 | |
634 | ibmveth_cleanup(adapter); | |
bea3348e | 635 | napi_disable(&adapter->napi); |
1da177e4 LT |
636 | return rc; |
637 | } | |
638 | ||
1096d63d RJ |
639 | adapter->bounce_buffer = |
640 | kmalloc(netdev->mtu + IBMVETH_BUFF_OH, GFP_KERNEL); | |
641 | if (!adapter->bounce_buffer) { | |
642 | ibmveth_error_printk("unable to allocate bounce buffer\n"); | |
643 | ibmveth_cleanup(adapter); | |
644 | napi_disable(&adapter->napi); | |
645 | return -ENOMEM; | |
646 | } | |
647 | adapter->bounce_buffer_dma = | |
648 | dma_map_single(&adapter->vdev->dev, adapter->bounce_buffer, | |
649 | netdev->mtu + IBMVETH_BUFF_OH, DMA_BIDIRECTIONAL); | |
8d8bb39b | 650 | if (dma_mapping_error(dev, adapter->bounce_buffer_dma)) { |
1096d63d RJ |
651 | ibmveth_error_printk("unable to map bounce buffer\n"); |
652 | ibmveth_cleanup(adapter); | |
653 | napi_disable(&adapter->napi); | |
654 | return -ENOMEM; | |
655 | } | |
656 | ||
e2adbcb4 | 657 | ibmveth_debug_printk("initial replenish cycle\n"); |
7d12e780 | 658 | ibmveth_interrupt(netdev->irq, netdev); |
1da177e4 | 659 | |
e2adbcb4 | 660 | netif_start_queue(netdev); |
1da177e4 LT |
661 | |
662 | ibmveth_debug_printk("open complete\n"); | |
663 | ||
664 | return 0; | |
665 | } | |
666 | ||
667 | static int ibmveth_close(struct net_device *netdev) | |
668 | { | |
669 | struct ibmveth_adapter *adapter = netdev->priv; | |
670 | long lpar_rc; | |
d7fbeba6 | 671 | |
1da177e4 LT |
672 | ibmveth_debug_printk("close starting\n"); |
673 | ||
bea3348e SH |
674 | napi_disable(&adapter->napi); |
675 | ||
860f242e SL |
676 | if (!adapter->pool_config) |
677 | netif_stop_queue(netdev); | |
1da177e4 LT |
678 | |
679 | free_irq(netdev->irq, netdev); | |
680 | ||
1da177e4 LT |
681 | do { |
682 | lpar_rc = h_free_logical_lan(adapter->vdev->unit_address); | |
706c8c93 | 683 | } while (H_IS_LONG_BUSY(lpar_rc) || (lpar_rc == H_BUSY)); |
1da177e4 | 684 | |
706c8c93 | 685 | if(lpar_rc != H_SUCCESS) |
1da177e4 LT |
686 | { |
687 | ibmveth_error_printk("h_free_logical_lan failed with %lx, continuing with close\n", | |
688 | lpar_rc); | |
689 | } | |
690 | ||
691 | adapter->rx_no_buffer = *(u64*)(((char*)adapter->buffer_list_addr) + 4096 - 8); | |
692 | ||
693 | ibmveth_cleanup(adapter); | |
694 | ||
695 | ibmveth_debug_printk("close complete\n"); | |
696 | ||
697 | return 0; | |
698 | } | |
699 | ||
700 | static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) { | |
701 | cmd->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE); | |
702 | cmd->advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg | ADVERTISED_FIBRE); | |
703 | cmd->speed = SPEED_1000; | |
704 | cmd->duplex = DUPLEX_FULL; | |
705 | cmd->port = PORT_FIBRE; | |
706 | cmd->phy_address = 0; | |
707 | cmd->transceiver = XCVR_INTERNAL; | |
708 | cmd->autoneg = AUTONEG_ENABLE; | |
709 | cmd->maxtxpkt = 0; | |
710 | cmd->maxrxpkt = 1; | |
711 | return 0; | |
712 | } | |
713 | ||
714 | static void netdev_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info) { | |
715 | strncpy(info->driver, ibmveth_driver_name, sizeof(info->driver) - 1); | |
716 | strncpy(info->version, ibmveth_driver_version, sizeof(info->version) - 1); | |
717 | } | |
718 | ||
719 | static u32 netdev_get_link(struct net_device *dev) { | |
720 | return 1; | |
721 | } | |
722 | ||
5fc7e01c BK |
723 | static void ibmveth_set_rx_csum_flags(struct net_device *dev, u32 data) |
724 | { | |
725 | struct ibmveth_adapter *adapter = dev->priv; | |
726 | ||
727 | if (data) | |
728 | adapter->rx_csum = 1; | |
729 | else { | |
730 | /* | |
731 | * Since the ibmveth firmware interface does not have the concept of | |
732 | * separate tx/rx checksum offload enable, if rx checksum is disabled | |
733 | * we also have to disable tx checksum offload. Once we disable rx | |
734 | * checksum offload, we are no longer allowed to send tx buffers that | |
735 | * are not properly checksummed. | |
736 | */ | |
737 | adapter->rx_csum = 0; | |
738 | dev->features &= ~NETIF_F_IP_CSUM; | |
739 | } | |
740 | } | |
741 | ||
742 | static void ibmveth_set_tx_csum_flags(struct net_device *dev, u32 data) | |
743 | { | |
744 | struct ibmveth_adapter *adapter = dev->priv; | |
745 | ||
746 | if (data) { | |
747 | dev->features |= NETIF_F_IP_CSUM; | |
748 | adapter->rx_csum = 1; | |
749 | } else | |
750 | dev->features &= ~NETIF_F_IP_CSUM; | |
751 | } | |
752 | ||
753 | static int ibmveth_set_csum_offload(struct net_device *dev, u32 data, | |
754 | void (*done) (struct net_device *, u32)) | |
755 | { | |
756 | struct ibmveth_adapter *adapter = dev->priv; | |
79ef4a4d | 757 | u64 set_attr, clr_attr, ret_attr; |
5fc7e01c BK |
758 | long ret; |
759 | int rc1 = 0, rc2 = 0; | |
760 | int restart = 0; | |
761 | ||
762 | if (netif_running(dev)) { | |
763 | restart = 1; | |
764 | adapter->pool_config = 1; | |
765 | ibmveth_close(dev); | |
766 | adapter->pool_config = 0; | |
767 | } | |
768 | ||
79ef4a4d BK |
769 | set_attr = 0; |
770 | clr_attr = 0; | |
5fc7e01c BK |
771 | |
772 | if (data) | |
79ef4a4d | 773 | set_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM; |
5fc7e01c | 774 | else |
79ef4a4d | 775 | clr_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM; |
5fc7e01c | 776 | |
79ef4a4d | 777 | ret = h_illan_attributes(adapter->vdev->unit_address, 0, 0, &ret_attr); |
5fc7e01c | 778 | |
79ef4a4d BK |
779 | if (ret == H_SUCCESS && !(ret_attr & IBMVETH_ILLAN_ACTIVE_TRUNK) && |
780 | !(ret_attr & IBMVETH_ILLAN_TRUNK_PRI_MASK) && | |
781 | (ret_attr & IBMVETH_ILLAN_PADDED_PKT_CSUM)) { | |
782 | ret = h_illan_attributes(adapter->vdev->unit_address, clr_attr, | |
783 | set_attr, &ret_attr); | |
5fc7e01c BK |
784 | |
785 | if (ret != H_SUCCESS) { | |
786 | rc1 = -EIO; | |
787 | ibmveth_error_printk("unable to change checksum offload settings." | |
788 | " %d rc=%ld\n", data, ret); | |
789 | ||
790 | ret = h_illan_attributes(adapter->vdev->unit_address, | |
79ef4a4d | 791 | set_attr, clr_attr, &ret_attr); |
5fc7e01c BK |
792 | } else |
793 | done(dev, data); | |
794 | } else { | |
795 | rc1 = -EIO; | |
796 | ibmveth_error_printk("unable to change checksum offload settings." | |
79ef4a4d | 797 | " %d rc=%ld ret_attr=%lx\n", data, ret, ret_attr); |
5fc7e01c BK |
798 | } |
799 | ||
800 | if (restart) | |
801 | rc2 = ibmveth_open(dev); | |
802 | ||
803 | return rc1 ? rc1 : rc2; | |
804 | } | |
805 | ||
806 | static int ibmveth_set_rx_csum(struct net_device *dev, u32 data) | |
807 | { | |
808 | struct ibmveth_adapter *adapter = dev->priv; | |
809 | ||
810 | if ((data && adapter->rx_csum) || (!data && !adapter->rx_csum)) | |
811 | return 0; | |
812 | ||
813 | return ibmveth_set_csum_offload(dev, data, ibmveth_set_rx_csum_flags); | |
814 | } | |
815 | ||
816 | static int ibmveth_set_tx_csum(struct net_device *dev, u32 data) | |
817 | { | |
818 | struct ibmveth_adapter *adapter = dev->priv; | |
819 | int rc = 0; | |
820 | ||
821 | if (data && (dev->features & NETIF_F_IP_CSUM)) | |
822 | return 0; | |
823 | if (!data && !(dev->features & NETIF_F_IP_CSUM)) | |
824 | return 0; | |
825 | ||
826 | if (data && !adapter->rx_csum) | |
827 | rc = ibmveth_set_csum_offload(dev, data, ibmveth_set_tx_csum_flags); | |
828 | else | |
829 | ibmveth_set_tx_csum_flags(dev, data); | |
830 | ||
831 | return rc; | |
832 | } | |
833 | ||
834 | static u32 ibmveth_get_rx_csum(struct net_device *dev) | |
835 | { | |
836 | struct ibmveth_adapter *adapter = dev->priv; | |
837 | return adapter->rx_csum; | |
838 | } | |
839 | ||
ddbb4de9 BK |
840 | static void ibmveth_get_strings(struct net_device *dev, u32 stringset, u8 *data) |
841 | { | |
842 | int i; | |
843 | ||
844 | if (stringset != ETH_SS_STATS) | |
845 | return; | |
846 | ||
847 | for (i = 0; i < ARRAY_SIZE(ibmveth_stats); i++, data += ETH_GSTRING_LEN) | |
848 | memcpy(data, ibmveth_stats[i].name, ETH_GSTRING_LEN); | |
849 | } | |
850 | ||
b9f2c044 | 851 | static int ibmveth_get_sset_count(struct net_device *dev, int sset) |
ddbb4de9 | 852 | { |
b9f2c044 JG |
853 | switch (sset) { |
854 | case ETH_SS_STATS: | |
855 | return ARRAY_SIZE(ibmveth_stats); | |
856 | default: | |
857 | return -EOPNOTSUPP; | |
858 | } | |
ddbb4de9 BK |
859 | } |
860 | ||
861 | static void ibmveth_get_ethtool_stats(struct net_device *dev, | |
862 | struct ethtool_stats *stats, u64 *data) | |
863 | { | |
864 | int i; | |
865 | struct ibmveth_adapter *adapter = dev->priv; | |
866 | ||
867 | for (i = 0; i < ARRAY_SIZE(ibmveth_stats); i++) | |
868 | data[i] = IBMVETH_GET_STAT(adapter, ibmveth_stats[i].offset); | |
869 | } | |
870 | ||
7282d491 | 871 | static const struct ethtool_ops netdev_ethtool_ops = { |
1da177e4 LT |
872 | .get_drvinfo = netdev_get_drvinfo, |
873 | .get_settings = netdev_get_settings, | |
874 | .get_link = netdev_get_link, | |
5fc7e01c BK |
875 | .set_tx_csum = ibmveth_set_tx_csum, |
876 | .get_rx_csum = ibmveth_get_rx_csum, | |
877 | .set_rx_csum = ibmveth_set_rx_csum, | |
ddbb4de9 | 878 | .get_strings = ibmveth_get_strings, |
b9f2c044 | 879 | .get_sset_count = ibmveth_get_sset_count, |
ddbb4de9 | 880 | .get_ethtool_stats = ibmveth_get_ethtool_stats, |
1da177e4 LT |
881 | }; |
882 | ||
883 | static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
884 | { | |
885 | return -EOPNOTSUPP; | |
886 | } | |
887 | ||
888 | #define page_offset(v) ((unsigned long)(v) & ((1 << 12) - 1)) | |
889 | ||
890 | static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *netdev) | |
891 | { | |
892 | struct ibmveth_adapter *adapter = netdev->priv; | |
3449a2ab | 893 | union ibmveth_buf_desc desc; |
1da177e4 | 894 | unsigned long lpar_rc; |
1da177e4 | 895 | unsigned long correlator; |
60296d9e | 896 | unsigned long flags; |
1da177e4 | 897 | unsigned int retry_count; |
60296d9e SL |
898 | unsigned int tx_dropped = 0; |
899 | unsigned int tx_bytes = 0; | |
900 | unsigned int tx_packets = 0; | |
901 | unsigned int tx_send_failed = 0; | |
902 | unsigned int tx_map_failed = 0; | |
1096d63d RJ |
903 | int used_bounce = 0; |
904 | unsigned long data_dma_addr; | |
60296d9e | 905 | |
79ef4a4d | 906 | desc.fields.flags_len = IBMVETH_BUF_VALID | skb->len; |
1da177e4 | 907 | |
f4ff2872 BK |
908 | if (skb->ip_summed == CHECKSUM_PARTIAL && |
909 | ip_hdr(skb)->protocol != IPPROTO_TCP && skb_checksum_help(skb)) { | |
910 | ibmveth_error_printk("tx: failed to checksum packet\n"); | |
911 | tx_dropped++; | |
912 | goto out; | |
913 | } | |
914 | ||
915 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
916 | unsigned char *buf = skb_transport_header(skb) + skb->csum_offset; | |
917 | ||
79ef4a4d | 918 | desc.fields.flags_len |= (IBMVETH_BUF_NO_CSUM | IBMVETH_BUF_CSUM_GOOD); |
f4ff2872 BK |
919 | |
920 | /* Need to zero out the checksum */ | |
921 | buf[0] = 0; | |
922 | buf[1] = 0; | |
923 | } | |
924 | ||
45e15bb7 SL |
925 | data_dma_addr = dma_map_single(&adapter->vdev->dev, skb->data, |
926 | skb->len, DMA_TO_DEVICE); | |
c713e7cb | 927 | if (dma_mapping_error(&adapter->vdev->dev, data_dma_addr)) { |
1096d63d RJ |
928 | if (!firmware_has_feature(FW_FEATURE_CMO)) |
929 | ibmveth_error_printk("tx: unable to map xmit buffer\n"); | |
930 | skb_copy_from_linear_data(skb, adapter->bounce_buffer, | |
931 | skb->len); | |
932 | desc.fields.address = adapter->bounce_buffer_dma; | |
60296d9e | 933 | tx_map_failed++; |
1096d63d | 934 | used_bounce = 1; |
45e15bb7 | 935 | wmb(); |
1096d63d RJ |
936 | } else |
937 | desc.fields.address = data_dma_addr; | |
1da177e4 | 938 | |
1da177e4 LT |
939 | /* send the frame. Arbitrarily set retrycount to 1024 */ |
940 | correlator = 0; | |
941 | retry_count = 1024; | |
942 | do { | |
943 | lpar_rc = h_send_logical_lan(adapter->vdev->unit_address, | |
3449a2ab BK |
944 | desc.desc, 0, 0, 0, 0, 0, |
945 | correlator, &correlator); | |
706c8c93 | 946 | } while ((lpar_rc == H_BUSY) && (retry_count--)); |
d7fbeba6 | 947 | |
706c8c93 | 948 | if(lpar_rc != H_SUCCESS && lpar_rc != H_DROPPED) { |
1da177e4 | 949 | ibmveth_error_printk("tx: h_send_logical_lan failed with rc=%ld\n", lpar_rc); |
3449a2ab | 950 | ibmveth_error_printk("tx: valid=%d, len=%d, address=0x%08x\n", |
79ef4a4d BK |
951 | (desc.fields.flags_len & IBMVETH_BUF_VALID) ? 1 : 0, |
952 | skb->len, desc.fields.address); | |
60296d9e SL |
953 | tx_send_failed++; |
954 | tx_dropped++; | |
1da177e4 | 955 | } else { |
60296d9e SL |
956 | tx_packets++; |
957 | tx_bytes += skb->len; | |
0abe791e | 958 | netdev->trans_start = jiffies; |
1da177e4 LT |
959 | } |
960 | ||
1096d63d RJ |
961 | if (!used_bounce) |
962 | dma_unmap_single(&adapter->vdev->dev, data_dma_addr, | |
963 | skb->len, DMA_TO_DEVICE); | |
1da177e4 | 964 | |
60296d9e | 965 | out: spin_lock_irqsave(&adapter->stats_lock, flags); |
09f75cd7 JG |
966 | netdev->stats.tx_dropped += tx_dropped; |
967 | netdev->stats.tx_bytes += tx_bytes; | |
968 | netdev->stats.tx_packets += tx_packets; | |
60296d9e SL |
969 | adapter->tx_send_failed += tx_send_failed; |
970 | adapter->tx_map_failed += tx_map_failed; | |
971 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
972 | ||
1da177e4 LT |
973 | dev_kfree_skb(skb); |
974 | return 0; | |
975 | } | |
976 | ||
bea3348e | 977 | static int ibmveth_poll(struct napi_struct *napi, int budget) |
1da177e4 | 978 | { |
bea3348e SH |
979 | struct ibmveth_adapter *adapter = container_of(napi, struct ibmveth_adapter, napi); |
980 | struct net_device *netdev = adapter->netdev; | |
1da177e4 | 981 | int frames_processed = 0; |
1da177e4 LT |
982 | unsigned long lpar_rc; |
983 | ||
984 | restart_poll: | |
985 | do { | |
bea3348e | 986 | struct sk_buff *skb; |
1da177e4 | 987 | |
bea3348e SH |
988 | if (!ibmveth_rxq_pending_buffer(adapter)) |
989 | break; | |
1da177e4 | 990 | |
bea3348e SH |
991 | rmb(); |
992 | if (!ibmveth_rxq_buffer_valid(adapter)) { | |
993 | wmb(); /* suggested by larson1 */ | |
994 | adapter->rx_invalid_buffer++; | |
995 | ibmveth_debug_printk("recycling invalid buffer\n"); | |
996 | ibmveth_rxq_recycle_buffer(adapter); | |
997 | } else { | |
998 | int length = ibmveth_rxq_frame_length(adapter); | |
999 | int offset = ibmveth_rxq_frame_offset(adapter); | |
f4ff2872 BK |
1000 | int csum_good = ibmveth_rxq_csum_good(adapter); |
1001 | ||
bea3348e | 1002 | skb = ibmveth_rxq_get_buffer(adapter); |
f4ff2872 BK |
1003 | if (csum_good) |
1004 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1da177e4 | 1005 | |
bea3348e | 1006 | ibmveth_rxq_harvest_buffer(adapter); |
1da177e4 | 1007 | |
bea3348e SH |
1008 | skb_reserve(skb, offset); |
1009 | skb_put(skb, length); | |
1010 | skb->protocol = eth_type_trans(skb, netdev); | |
1da177e4 | 1011 | |
bea3348e | 1012 | netif_receive_skb(skb); /* send it up */ |
1da177e4 | 1013 | |
09f75cd7 JG |
1014 | netdev->stats.rx_packets++; |
1015 | netdev->stats.rx_bytes += length; | |
bea3348e SH |
1016 | frames_processed++; |
1017 | netdev->last_rx = jiffies; | |
1da177e4 | 1018 | } |
bea3348e | 1019 | } while (frames_processed < budget); |
1da177e4 | 1020 | |
e2adbcb4 | 1021 | ibmveth_replenish_task(adapter); |
1da177e4 | 1022 | |
bea3348e SH |
1023 | if (frames_processed < budget) { |
1024 | /* We think we are done - reenable interrupts, | |
1025 | * then check once more to make sure we are done. | |
1026 | */ | |
1027 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, | |
1028 | VIO_IRQ_ENABLE); | |
1da177e4 | 1029 | |
bea3348e | 1030 | ibmveth_assert(lpar_rc == H_SUCCESS); |
1da177e4 | 1031 | |
bea3348e | 1032 | netif_rx_complete(netdev, napi); |
1da177e4 | 1033 | |
bea3348e SH |
1034 | if (ibmveth_rxq_pending_buffer(adapter) && |
1035 | netif_rx_reschedule(netdev, napi)) { | |
1036 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, | |
1037 | VIO_IRQ_DISABLE); | |
1038 | goto restart_poll; | |
1039 | } | |
1da177e4 LT |
1040 | } |
1041 | ||
bea3348e | 1042 | return frames_processed; |
1da177e4 LT |
1043 | } |
1044 | ||
7d12e780 | 1045 | static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance) |
d7fbeba6 | 1046 | { |
1da177e4 LT |
1047 | struct net_device *netdev = dev_instance; |
1048 | struct ibmveth_adapter *adapter = netdev->priv; | |
1049 | unsigned long lpar_rc; | |
1050 | ||
bea3348e SH |
1051 | if (netif_rx_schedule_prep(netdev, &adapter->napi)) { |
1052 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, | |
1053 | VIO_IRQ_DISABLE); | |
706c8c93 | 1054 | ibmveth_assert(lpar_rc == H_SUCCESS); |
bea3348e | 1055 | __netif_rx_schedule(netdev, &adapter->napi); |
1da177e4 LT |
1056 | } |
1057 | return IRQ_HANDLED; | |
1058 | } | |
1059 | ||
1da177e4 LT |
1060 | static void ibmveth_set_multicast_list(struct net_device *netdev) |
1061 | { | |
1062 | struct ibmveth_adapter *adapter = netdev->priv; | |
1063 | unsigned long lpar_rc; | |
1064 | ||
1065 | if((netdev->flags & IFF_PROMISC) || (netdev->mc_count > adapter->mcastFilterSize)) { | |
1066 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, | |
1067 | IbmVethMcastEnableRecv | | |
1068 | IbmVethMcastDisableFiltering, | |
1069 | 0); | |
706c8c93 | 1070 | if(lpar_rc != H_SUCCESS) { |
1da177e4 LT |
1071 | ibmveth_error_printk("h_multicast_ctrl rc=%ld when entering promisc mode\n", lpar_rc); |
1072 | } | |
1073 | } else { | |
1074 | struct dev_mc_list *mclist = netdev->mc_list; | |
1075 | int i; | |
1076 | /* clear the filter table & disable filtering */ | |
1077 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, | |
1078 | IbmVethMcastEnableRecv | | |
1079 | IbmVethMcastDisableFiltering | | |
1080 | IbmVethMcastClearFilterTable, | |
1081 | 0); | |
706c8c93 | 1082 | if(lpar_rc != H_SUCCESS) { |
1da177e4 LT |
1083 | ibmveth_error_printk("h_multicast_ctrl rc=%ld when attempting to clear filter table\n", lpar_rc); |
1084 | } | |
1085 | /* add the addresses to the filter table */ | |
1086 | for(i = 0; i < netdev->mc_count; ++i, mclist = mclist->next) { | |
1087 | // add the multicast address to the filter table | |
1088 | unsigned long mcast_addr = 0; | |
1089 | memcpy(((char *)&mcast_addr)+2, mclist->dmi_addr, 6); | |
1090 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, | |
1091 | IbmVethMcastAddFilter, | |
1092 | mcast_addr); | |
706c8c93 | 1093 | if(lpar_rc != H_SUCCESS) { |
1da177e4 LT |
1094 | ibmveth_error_printk("h_multicast_ctrl rc=%ld when adding an entry to the filter table\n", lpar_rc); |
1095 | } | |
1096 | } | |
d7fbeba6 | 1097 | |
1da177e4 LT |
1098 | /* re-enable filtering */ |
1099 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, | |
1100 | IbmVethMcastEnableFiltering, | |
1101 | 0); | |
706c8c93 | 1102 | if(lpar_rc != H_SUCCESS) { |
1da177e4 LT |
1103 | ibmveth_error_printk("h_multicast_ctrl rc=%ld when enabling filtering\n", lpar_rc); |
1104 | } | |
1105 | } | |
1106 | } | |
1107 | ||
1108 | static int ibmveth_change_mtu(struct net_device *dev, int new_mtu) | |
1109 | { | |
b6d35182 | 1110 | struct ibmveth_adapter *adapter = dev->priv; |
1096d63d | 1111 | struct vio_dev *viodev = adapter->vdev; |
860f242e | 1112 | int new_mtu_oh = new_mtu + IBMVETH_BUFF_OH; |
1096d63d | 1113 | int i; |
b6d35182 | 1114 | |
860f242e | 1115 | if (new_mtu < IBMVETH_MAX_MTU) |
1da177e4 | 1116 | return -EINVAL; |
b6d35182 | 1117 | |
ce6eea58 BK |
1118 | for (i = 0; i < IbmVethNumBufferPools; i++) |
1119 | if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size) | |
1120 | break; | |
1121 | ||
1122 | if (i == IbmVethNumBufferPools) | |
1123 | return -EINVAL; | |
1124 | ||
ea866e65 SL |
1125 | /* Deactivate all the buffer pools so that the next loop can activate |
1126 | only the buffer pools necessary to hold the new MTU */ | |
1127 | for (i = 0; i < IbmVethNumBufferPools; i++) | |
1128 | if (adapter->rx_buff_pool[i].active) { | |
1129 | ibmveth_free_buffer_pool(adapter, | |
1130 | &adapter->rx_buff_pool[i]); | |
1131 | adapter->rx_buff_pool[i].active = 0; | |
1132 | } | |
1133 | ||
860f242e | 1134 | /* Look for an active buffer pool that can hold the new MTU */ |
b6d35182 | 1135 | for(i = 0; i<IbmVethNumBufferPools; i++) { |
ea866e65 | 1136 | adapter->rx_buff_pool[i].active = 1; |
ce6eea58 | 1137 | |
860f242e | 1138 | if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size) { |
ea866e65 | 1139 | if (netif_running(adapter->netdev)) { |
ce6eea58 BK |
1140 | adapter->pool_config = 1; |
1141 | ibmveth_close(adapter->netdev); | |
1142 | adapter->pool_config = 0; | |
1143 | dev->mtu = new_mtu; | |
1096d63d RJ |
1144 | vio_cmo_set_dev_desired(viodev, |
1145 | ibmveth_get_desired_dma | |
1146 | (viodev)); | |
1147 | return ibmveth_open(adapter->netdev); | |
1148 | } | |
1149 | dev->mtu = new_mtu; | |
1150 | vio_cmo_set_dev_desired(viodev, | |
1151 | ibmveth_get_desired_dma | |
1152 | (viodev)); | |
860f242e | 1153 | return 0; |
b6d35182 | 1154 | } |
b6d35182 | 1155 | } |
860f242e | 1156 | return -EINVAL; |
1da177e4 LT |
1157 | } |
1158 | ||
6b422374 SL |
1159 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1160 | static void ibmveth_poll_controller(struct net_device *dev) | |
1161 | { | |
1162 | ibmveth_replenish_task(dev->priv); | |
5f77113c | 1163 | ibmveth_interrupt(dev->irq, dev); |
6b422374 SL |
1164 | } |
1165 | #endif | |
1166 | ||
1096d63d RJ |
1167 | /** |
1168 | * ibmveth_get_desired_dma - Calculate IO memory desired by the driver | |
1169 | * | |
1170 | * @vdev: struct vio_dev for the device whose desired IO mem is to be returned | |
1171 | * | |
1172 | * Return value: | |
1173 | * Number of bytes of IO data the driver will need to perform well. | |
1174 | */ | |
1175 | static unsigned long ibmveth_get_desired_dma(struct vio_dev *vdev) | |
1176 | { | |
1177 | struct net_device *netdev = dev_get_drvdata(&vdev->dev); | |
1178 | struct ibmveth_adapter *adapter; | |
1179 | unsigned long ret; | |
1180 | int i; | |
1181 | int rxqentries = 1; | |
1182 | ||
1183 | /* netdev inits at probe time along with the structures we need below*/ | |
1184 | if (netdev == NULL) | |
1185 | return IOMMU_PAGE_ALIGN(IBMVETH_IO_ENTITLEMENT_DEFAULT); | |
1186 | ||
1187 | adapter = netdev_priv(netdev); | |
1188 | ||
1189 | ret = IBMVETH_BUFF_LIST_SIZE + IBMVETH_FILT_LIST_SIZE; | |
1190 | ret += IOMMU_PAGE_ALIGN(netdev->mtu); | |
1191 | ||
1192 | for (i = 0; i < IbmVethNumBufferPools; i++) { | |
1193 | /* add the size of the active receive buffers */ | |
1194 | if (adapter->rx_buff_pool[i].active) | |
1195 | ret += | |
1196 | adapter->rx_buff_pool[i].size * | |
1197 | IOMMU_PAGE_ALIGN(adapter->rx_buff_pool[i]. | |
1198 | buff_size); | |
1199 | rxqentries += adapter->rx_buff_pool[i].size; | |
1200 | } | |
1201 | /* add the size of the receive queue entries */ | |
1202 | ret += IOMMU_PAGE_ALIGN(rxqentries * sizeof(struct ibmveth_rx_q_entry)); | |
1203 | ||
1204 | return ret; | |
1205 | } | |
1206 | ||
1da177e4 LT |
1207 | static int __devinit ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id) |
1208 | { | |
b6d35182 | 1209 | int rc, i; |
f4ff2872 | 1210 | long ret; |
1da177e4 | 1211 | struct net_device *netdev; |
9dc83afd | 1212 | struct ibmveth_adapter *adapter; |
79ef4a4d | 1213 | u64 set_attr, ret_attr; |
1da177e4 LT |
1214 | |
1215 | unsigned char *mac_addr_p; | |
1216 | unsigned int *mcastFilterSize_p; | |
1217 | ||
1218 | ||
d7fbeba6 | 1219 | ibmveth_debug_printk_no_adapter("entering ibmveth_probe for UA 0x%x\n", |
1da177e4 LT |
1220 | dev->unit_address); |
1221 | ||
493a684a ME |
1222 | mac_addr_p = (unsigned char *) vio_get_attribute(dev, |
1223 | VETH_MAC_ADDR, NULL); | |
1da177e4 LT |
1224 | if(!mac_addr_p) { |
1225 | printk(KERN_ERR "(%s:%3.3d) ERROR: Can't find VETH_MAC_ADDR " | |
1226 | "attribute\n", __FILE__, __LINE__); | |
1227 | return 0; | |
1228 | } | |
d7fbeba6 | 1229 | |
493a684a ME |
1230 | mcastFilterSize_p = (unsigned int *) vio_get_attribute(dev, |
1231 | VETH_MCAST_FILTER_SIZE, NULL); | |
1da177e4 LT |
1232 | if(!mcastFilterSize_p) { |
1233 | printk(KERN_ERR "(%s:%3.3d) ERROR: Can't find " | |
1234 | "VETH_MCAST_FILTER_SIZE attribute\n", | |
1235 | __FILE__, __LINE__); | |
1236 | return 0; | |
1237 | } | |
d7fbeba6 | 1238 | |
1da177e4 LT |
1239 | netdev = alloc_etherdev(sizeof(struct ibmveth_adapter)); |
1240 | ||
1241 | if(!netdev) | |
1242 | return -ENOMEM; | |
1243 | ||
1da177e4 | 1244 | adapter = netdev->priv; |
1da177e4 LT |
1245 | dev->dev.driver_data = netdev; |
1246 | ||
1247 | adapter->vdev = dev; | |
1248 | adapter->netdev = netdev; | |
1249 | adapter->mcastFilterSize= *mcastFilterSize_p; | |
860f242e | 1250 | adapter->pool_config = 0; |
d7fbeba6 | 1251 | |
bea3348e SH |
1252 | netif_napi_add(netdev, &adapter->napi, ibmveth_poll, 16); |
1253 | ||
1da177e4 | 1254 | /* Some older boxes running PHYP non-natively have an OF that |
d7fbeba6 | 1255 | returns a 8-byte local-mac-address field (and the first |
1da177e4 | 1256 | 2 bytes have to be ignored) while newer boxes' OF return |
d7fbeba6 | 1257 | a 6-byte field. Note that IEEE 1275 specifies that |
1da177e4 | 1258 | local-mac-address must be a 6-byte field. |
d7fbeba6 | 1259 | The RPA doc specifies that the first byte must be 10b, so |
1da177e4 LT |
1260 | we'll just look for it to solve this 8 vs. 6 byte field issue */ |
1261 | ||
1262 | if ((*mac_addr_p & 0x3) != 0x02) | |
1263 | mac_addr_p += 2; | |
1264 | ||
1265 | adapter->mac_addr = 0; | |
1266 | memcpy(&adapter->mac_addr, mac_addr_p, 6); | |
1267 | ||
1da177e4 LT |
1268 | netdev->irq = dev->irq; |
1269 | netdev->open = ibmveth_open; | |
1da177e4 LT |
1270 | netdev->stop = ibmveth_close; |
1271 | netdev->hard_start_xmit = ibmveth_start_xmit; | |
1da177e4 LT |
1272 | netdev->set_multicast_list = ibmveth_set_multicast_list; |
1273 | netdev->do_ioctl = ibmveth_ioctl; | |
1274 | netdev->ethtool_ops = &netdev_ethtool_ops; | |
1275 | netdev->change_mtu = ibmveth_change_mtu; | |
1276 | SET_NETDEV_DEV(netdev, &dev->dev); | |
6b422374 SL |
1277 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1278 | netdev->poll_controller = ibmveth_poll_controller; | |
1279 | #endif | |
d7fbeba6 | 1280 | netdev->features |= NETIF_F_LLTX; |
60296d9e | 1281 | spin_lock_init(&adapter->stats_lock); |
1da177e4 LT |
1282 | |
1283 | memcpy(&netdev->dev_addr, &adapter->mac_addr, netdev->addr_len); | |
1284 | ||
860f242e SL |
1285 | for(i = 0; i<IbmVethNumBufferPools; i++) { |
1286 | struct kobject *kobj = &adapter->rx_buff_pool[i].kobj; | |
8dde2a96 GKH |
1287 | int error; |
1288 | ||
d7fbeba6 JG |
1289 | ibmveth_init_buffer_pool(&adapter->rx_buff_pool[i], i, |
1290 | pool_count[i], pool_size[i], | |
860f242e | 1291 | pool_active[i]); |
8dde2a96 GKH |
1292 | error = kobject_init_and_add(kobj, &ktype_veth_pool, |
1293 | &dev->dev.kobj, "pool%d", i); | |
1294 | if (!error) | |
1295 | kobject_uevent(kobj, KOBJ_ADD); | |
860f242e | 1296 | } |
1da177e4 LT |
1297 | |
1298 | ibmveth_debug_printk("adapter @ 0x%p\n", adapter); | |
1299 | ||
1da177e4 LT |
1300 | adapter->buffer_list_dma = DMA_ERROR_CODE; |
1301 | adapter->filter_list_dma = DMA_ERROR_CODE; | |
1302 | adapter->rx_queue.queue_dma = DMA_ERROR_CODE; | |
1303 | ||
1da177e4 LT |
1304 | ibmveth_debug_printk("registering netdev...\n"); |
1305 | ||
79ef4a4d | 1306 | ret = h_illan_attributes(dev->unit_address, 0, 0, &ret_attr); |
f4ff2872 | 1307 | |
79ef4a4d BK |
1308 | if (ret == H_SUCCESS && !(ret_attr & IBMVETH_ILLAN_ACTIVE_TRUNK) && |
1309 | !(ret_attr & IBMVETH_ILLAN_TRUNK_PRI_MASK) && | |
1310 | (ret_attr & IBMVETH_ILLAN_PADDED_PKT_CSUM)) { | |
1311 | set_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM; | |
f4ff2872 | 1312 | |
79ef4a4d | 1313 | ret = h_illan_attributes(dev->unit_address, 0, set_attr, &ret_attr); |
f4ff2872 | 1314 | |
5fc7e01c BK |
1315 | if (ret == H_SUCCESS) { |
1316 | adapter->rx_csum = 1; | |
f4ff2872 | 1317 | netdev->features |= NETIF_F_IP_CSUM; |
5fc7e01c | 1318 | } else |
79ef4a4d | 1319 | ret = h_illan_attributes(dev->unit_address, set_attr, 0, &ret_attr); |
f4ff2872 BK |
1320 | } |
1321 | ||
1da177e4 LT |
1322 | rc = register_netdev(netdev); |
1323 | ||
1324 | if(rc) { | |
1325 | ibmveth_debug_printk("failed to register netdev rc=%d\n", rc); | |
1326 | free_netdev(netdev); | |
1327 | return rc; | |
1328 | } | |
1329 | ||
1330 | ibmveth_debug_printk("registered\n"); | |
1331 | ||
1332 | ibmveth_proc_register_adapter(adapter); | |
1333 | ||
1334 | return 0; | |
1335 | } | |
1336 | ||
1337 | static int __devexit ibmveth_remove(struct vio_dev *dev) | |
1338 | { | |
1339 | struct net_device *netdev = dev->dev.driver_data; | |
1340 | struct ibmveth_adapter *adapter = netdev->priv; | |
860f242e SL |
1341 | int i; |
1342 | ||
1343 | for(i = 0; i<IbmVethNumBufferPools; i++) | |
c10997f6 | 1344 | kobject_put(&adapter->rx_buff_pool[i].kobj); |
1da177e4 LT |
1345 | |
1346 | unregister_netdev(netdev); | |
1347 | ||
1348 | ibmveth_proc_unregister_adapter(adapter); | |
1349 | ||
1350 | free_netdev(netdev); | |
1096d63d RJ |
1351 | dev_set_drvdata(&dev->dev, NULL); |
1352 | ||
1da177e4 LT |
1353 | return 0; |
1354 | } | |
1355 | ||
1356 | #ifdef CONFIG_PROC_FS | |
1357 | static void ibmveth_proc_register_driver(void) | |
1358 | { | |
457c4cbc | 1359 | ibmveth_proc_dir = proc_mkdir(IBMVETH_PROC_DIR, init_net.proc_net); |
1da177e4 | 1360 | if (ibmveth_proc_dir) { |
1da177e4 LT |
1361 | } |
1362 | } | |
1363 | ||
1364 | static void ibmveth_proc_unregister_driver(void) | |
1365 | { | |
457c4cbc | 1366 | remove_proc_entry(IBMVETH_PROC_DIR, init_net.proc_net); |
1da177e4 LT |
1367 | } |
1368 | ||
1119d577 | 1369 | static int ibmveth_show(struct seq_file *seq, void *v) |
1da177e4 LT |
1370 | { |
1371 | struct ibmveth_adapter *adapter = seq->private; | |
1372 | char *current_mac = ((char*) &adapter->netdev->dev_addr); | |
1373 | char *firmware_mac = ((char*) &adapter->mac_addr) ; | |
0795af57 | 1374 | DECLARE_MAC_BUF(mac); |
1da177e4 LT |
1375 | |
1376 | seq_printf(seq, "%s %s\n\n", ibmveth_driver_string, ibmveth_driver_version); | |
d7fbeba6 | 1377 | |
1da177e4 | 1378 | seq_printf(seq, "Unit Address: 0x%x\n", adapter->vdev->unit_address); |
0795af57 JP |
1379 | seq_printf(seq, "Current MAC: %s\n", print_mac(mac, current_mac)); |
1380 | seq_printf(seq, "Firmware MAC: %s\n", print_mac(mac, firmware_mac)); | |
d7fbeba6 | 1381 | |
1da177e4 | 1382 | seq_printf(seq, "\nAdapter Statistics:\n"); |
3449a2ab | 1383 | seq_printf(seq, " TX: vio_map_single failres: %ld\n", adapter->tx_map_failed); |
1da177e4 LT |
1384 | seq_printf(seq, " send failures: %ld\n", adapter->tx_send_failed); |
1385 | seq_printf(seq, " RX: replenish task cycles: %ld\n", adapter->replenish_task_cycles); | |
1386 | seq_printf(seq, " alloc_skb_failures: %ld\n", adapter->replenish_no_mem); | |
1387 | seq_printf(seq, " add buffer failures: %ld\n", adapter->replenish_add_buff_failure); | |
1388 | seq_printf(seq, " invalid buffers: %ld\n", adapter->rx_invalid_buffer); | |
1389 | seq_printf(seq, " no buffers: %ld\n", adapter->rx_no_buffer); | |
d7fbeba6 | 1390 | |
1da177e4 LT |
1391 | return 0; |
1392 | } | |
1da177e4 LT |
1393 | |
1394 | static int ibmveth_proc_open(struct inode *inode, struct file *file) | |
1395 | { | |
1119d577 | 1396 | return single_open(file, ibmveth_show, PDE(inode)->data); |
1da177e4 LT |
1397 | } |
1398 | ||
d54b1fdb | 1399 | static const struct file_operations ibmveth_proc_fops = { |
1da177e4 LT |
1400 | .owner = THIS_MODULE, |
1401 | .open = ibmveth_proc_open, | |
1402 | .read = seq_read, | |
1403 | .llseek = seq_lseek, | |
1119d577 | 1404 | .release = single_release, |
1da177e4 LT |
1405 | }; |
1406 | ||
1407 | static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter) | |
1408 | { | |
1409 | struct proc_dir_entry *entry; | |
1410 | if (ibmveth_proc_dir) { | |
03a85d09 SL |
1411 | char u_addr[10]; |
1412 | sprintf(u_addr, "%x", adapter->vdev->unit_address); | |
a95609cb DL |
1413 | entry = proc_create_data(u_addr, S_IFREG, ibmveth_proc_dir, |
1414 | &ibmveth_proc_fops, adapter); | |
1415 | if (!entry) | |
1da177e4 | 1416 | ibmveth_error_printk("Cannot create adapter proc entry"); |
1da177e4 LT |
1417 | } |
1418 | return; | |
1419 | } | |
1420 | ||
1421 | static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter) | |
1422 | { | |
1423 | if (ibmveth_proc_dir) { | |
03a85d09 SL |
1424 | char u_addr[10]; |
1425 | sprintf(u_addr, "%x", adapter->vdev->unit_address); | |
1426 | remove_proc_entry(u_addr, ibmveth_proc_dir); | |
1da177e4 LT |
1427 | } |
1428 | } | |
1429 | ||
1430 | #else /* CONFIG_PROC_FS */ | |
d7fbeba6 | 1431 | static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter) |
1da177e4 LT |
1432 | { |
1433 | } | |
1434 | ||
d7fbeba6 | 1435 | static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter) |
1da177e4 LT |
1436 | { |
1437 | } | |
1438 | static void ibmveth_proc_register_driver(void) | |
1439 | { | |
1440 | } | |
1441 | ||
1442 | static void ibmveth_proc_unregister_driver(void) | |
1443 | { | |
1444 | } | |
1445 | #endif /* CONFIG_PROC_FS */ | |
1446 | ||
860f242e SL |
1447 | static struct attribute veth_active_attr; |
1448 | static struct attribute veth_num_attr; | |
1449 | static struct attribute veth_size_attr; | |
1450 | ||
1451 | static ssize_t veth_pool_show(struct kobject * kobj, | |
1452 | struct attribute * attr, char * buf) | |
1453 | { | |
d7fbeba6 | 1454 | struct ibmveth_buff_pool *pool = container_of(kobj, |
860f242e SL |
1455 | struct ibmveth_buff_pool, |
1456 | kobj); | |
1457 | ||
1458 | if (attr == &veth_active_attr) | |
1459 | return sprintf(buf, "%d\n", pool->active); | |
1460 | else if (attr == &veth_num_attr) | |
1461 | return sprintf(buf, "%d\n", pool->size); | |
1462 | else if (attr == &veth_size_attr) | |
1463 | return sprintf(buf, "%d\n", pool->buff_size); | |
1464 | return 0; | |
1465 | } | |
1466 | ||
1467 | static ssize_t veth_pool_store(struct kobject * kobj, struct attribute * attr, | |
1468 | const char * buf, size_t count) | |
1469 | { | |
d7fbeba6 | 1470 | struct ibmveth_buff_pool *pool = container_of(kobj, |
860f242e SL |
1471 | struct ibmveth_buff_pool, |
1472 | kobj); | |
d7fbeba6 | 1473 | struct net_device *netdev = |
860f242e SL |
1474 | container_of(kobj->parent, struct device, kobj)->driver_data; |
1475 | struct ibmveth_adapter *adapter = netdev->priv; | |
1476 | long value = simple_strtol(buf, NULL, 10); | |
1477 | long rc; | |
1478 | ||
1479 | if (attr == &veth_active_attr) { | |
1480 | if (value && !pool->active) { | |
4aa9c93e BK |
1481 | if (netif_running(netdev)) { |
1482 | if(ibmveth_alloc_buffer_pool(pool)) { | |
1483 | ibmveth_error_printk("unable to alloc pool\n"); | |
1484 | return -ENOMEM; | |
1485 | } | |
1486 | pool->active = 1; | |
1487 | adapter->pool_config = 1; | |
1488 | ibmveth_close(netdev); | |
1489 | adapter->pool_config = 0; | |
1490 | if ((rc = ibmveth_open(netdev))) | |
1491 | return rc; | |
1492 | } else | |
1493 | pool->active = 1; | |
860f242e SL |
1494 | } else if (!value && pool->active) { |
1495 | int mtu = netdev->mtu + IBMVETH_BUFF_OH; | |
1496 | int i; | |
1497 | /* Make sure there is a buffer pool with buffers that | |
1498 | can hold a packet of the size of the MTU */ | |
76b9cfcc | 1499 | for (i = 0; i < IbmVethNumBufferPools; i++) { |
860f242e SL |
1500 | if (pool == &adapter->rx_buff_pool[i]) |
1501 | continue; | |
1502 | if (!adapter->rx_buff_pool[i].active) | |
1503 | continue; | |
76b9cfcc BK |
1504 | if (mtu <= adapter->rx_buff_pool[i].buff_size) |
1505 | break; | |
860f242e | 1506 | } |
76b9cfcc BK |
1507 | |
1508 | if (i == IbmVethNumBufferPools) { | |
860f242e SL |
1509 | ibmveth_error_printk("no active pool >= MTU\n"); |
1510 | return -EPERM; | |
1511 | } | |
76b9cfcc | 1512 | |
76b9cfcc BK |
1513 | if (netif_running(netdev)) { |
1514 | adapter->pool_config = 1; | |
1515 | ibmveth_close(netdev); | |
ea866e65 | 1516 | pool->active = 0; |
76b9cfcc BK |
1517 | adapter->pool_config = 0; |
1518 | if ((rc = ibmveth_open(netdev))) | |
1519 | return rc; | |
1520 | } | |
ea866e65 | 1521 | pool->active = 0; |
860f242e SL |
1522 | } |
1523 | } else if (attr == &veth_num_attr) { | |
1524 | if (value <= 0 || value > IBMVETH_MAX_POOL_COUNT) | |
1525 | return -EINVAL; | |
1526 | else { | |
4aa9c93e BK |
1527 | if (netif_running(netdev)) { |
1528 | adapter->pool_config = 1; | |
1529 | ibmveth_close(netdev); | |
1530 | adapter->pool_config = 0; | |
1531 | pool->size = value; | |
1532 | if ((rc = ibmveth_open(netdev))) | |
1533 | return rc; | |
1534 | } else | |
1535 | pool->size = value; | |
860f242e SL |
1536 | } |
1537 | } else if (attr == &veth_size_attr) { | |
1538 | if (value <= IBMVETH_BUFF_OH || value > IBMVETH_MAX_BUF_SIZE) | |
1539 | return -EINVAL; | |
1540 | else { | |
4aa9c93e BK |
1541 | if (netif_running(netdev)) { |
1542 | adapter->pool_config = 1; | |
1543 | ibmveth_close(netdev); | |
1544 | adapter->pool_config = 0; | |
1545 | pool->buff_size = value; | |
1546 | if ((rc = ibmveth_open(netdev))) | |
1547 | return rc; | |
1548 | } else | |
1549 | pool->buff_size = value; | |
860f242e SL |
1550 | } |
1551 | } | |
1552 | ||
1553 | /* kick the interrupt handler to allocate/deallocate pools */ | |
7d12e780 | 1554 | ibmveth_interrupt(netdev->irq, netdev); |
860f242e SL |
1555 | return count; |
1556 | } | |
1557 | ||
1558 | ||
1559 | #define ATTR(_name, _mode) \ | |
1560 | struct attribute veth_##_name##_attr = { \ | |
7b595756 | 1561 | .name = __stringify(_name), .mode = _mode, \ |
860f242e SL |
1562 | }; |
1563 | ||
1564 | static ATTR(active, 0644); | |
1565 | static ATTR(num, 0644); | |
1566 | static ATTR(size, 0644); | |
1567 | ||
1568 | static struct attribute * veth_pool_attrs[] = { | |
1569 | &veth_active_attr, | |
1570 | &veth_num_attr, | |
1571 | &veth_size_attr, | |
1572 | NULL, | |
1573 | }; | |
1574 | ||
1575 | static struct sysfs_ops veth_pool_ops = { | |
1576 | .show = veth_pool_show, | |
1577 | .store = veth_pool_store, | |
1578 | }; | |
1579 | ||
1580 | static struct kobj_type ktype_veth_pool = { | |
1581 | .release = NULL, | |
1582 | .sysfs_ops = &veth_pool_ops, | |
1583 | .default_attrs = veth_pool_attrs, | |
1584 | }; | |
1585 | ||
1586 | ||
1da177e4 LT |
1587 | static struct vio_device_id ibmveth_device_table[] __devinitdata= { |
1588 | { "network", "IBM,l-lan"}, | |
fb120da6 | 1589 | { "", "" } |
1da177e4 | 1590 | }; |
1da177e4 LT |
1591 | MODULE_DEVICE_TABLE(vio, ibmveth_device_table); |
1592 | ||
1593 | static struct vio_driver ibmveth_driver = { | |
6fdf5392 SR |
1594 | .id_table = ibmveth_device_table, |
1595 | .probe = ibmveth_probe, | |
1596 | .remove = ibmveth_remove, | |
1096d63d | 1597 | .get_desired_dma = ibmveth_get_desired_dma, |
6fdf5392 SR |
1598 | .driver = { |
1599 | .name = ibmveth_driver_name, | |
915124d8 | 1600 | .owner = THIS_MODULE, |
6fdf5392 | 1601 | } |
1da177e4 LT |
1602 | }; |
1603 | ||
1604 | static int __init ibmveth_module_init(void) | |
1605 | { | |
1606 | ibmveth_printk("%s: %s %s\n", ibmveth_driver_name, ibmveth_driver_string, ibmveth_driver_version); | |
1607 | ||
1608 | ibmveth_proc_register_driver(); | |
1609 | ||
1610 | return vio_register_driver(&ibmveth_driver); | |
1611 | } | |
1612 | ||
1613 | static void __exit ibmveth_module_exit(void) | |
1614 | { | |
1615 | vio_unregister_driver(&ibmveth_driver); | |
1616 | ibmveth_proc_unregister_driver(); | |
d7fbeba6 | 1617 | } |
1da177e4 LT |
1618 | |
1619 | module_init(ibmveth_module_init); | |
1620 | module_exit(ibmveth_module_exit); |