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> | |
e7a3af5d | 48 | #include <linux/pm.h> |
1da177e4 LT |
49 | #include <linux/ethtool.h> |
50 | #include <linux/proc_fs.h> | |
f4ff2872 BK |
51 | #include <linux/in.h> |
52 | #include <linux/ip.h> | |
5a0e3ad6 | 53 | #include <linux/slab.h> |
457c4cbc | 54 | #include <net/net_namespace.h> |
1da177e4 LT |
55 | #include <asm/hvcall.h> |
56 | #include <asm/atomic.h> | |
1da177e4 | 57 | #include <asm/vio.h> |
1096d63d | 58 | #include <asm/iommu.h> |
1da177e4 | 59 | #include <asm/uaccess.h> |
1096d63d | 60 | #include <asm/firmware.h> |
1da177e4 LT |
61 | #include <linux/seq_file.h> |
62 | ||
63 | #include "ibmveth.h" | |
64 | ||
6af37fa9 | 65 | #undef DEBUG |
1da177e4 LT |
66 | |
67 | #define ibmveth_printk(fmt, args...) \ | |
f98baffb | 68 | printk(KERN_DEBUG "%s: " fmt, __FILE__, ## args) |
1da177e4 LT |
69 | |
70 | #define ibmveth_error_printk(fmt, args...) \ | |
71 | printk(KERN_ERR "(%s:%3.3d ua:%x) ERROR: " fmt, __FILE__, __LINE__ , adapter->vdev->unit_address, ## args) | |
72 | ||
73 | #ifdef DEBUG | |
74 | #define ibmveth_debug_printk_no_adapter(fmt, args...) \ | |
75 | printk(KERN_DEBUG "(%s:%3.3d): " fmt, __FILE__, __LINE__ , ## args) | |
76 | #define ibmveth_debug_printk(fmt, args...) \ | |
77 | printk(KERN_DEBUG "(%s:%3.3d ua:%x): " fmt, __FILE__, __LINE__ , adapter->vdev->unit_address, ## args) | |
78 | #define ibmveth_assert(expr) \ | |
79 | if(!(expr)) { \ | |
80 | printk(KERN_DEBUG "assertion failed (%s:%3.3d ua:%x): %s\n", __FILE__, __LINE__, adapter->vdev->unit_address, #expr); \ | |
81 | BUG(); \ | |
82 | } | |
83 | #else | |
84 | #define ibmveth_debug_printk_no_adapter(fmt, args...) | |
85 | #define ibmveth_debug_printk(fmt, args...) | |
d7fbeba6 | 86 | #define ibmveth_assert(expr) |
1da177e4 LT |
87 | #endif |
88 | ||
89 | static int ibmveth_open(struct net_device *dev); | |
90 | static int ibmveth_close(struct net_device *dev); | |
91 | static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd); | |
bea3348e | 92 | static int ibmveth_poll(struct napi_struct *napi, int budget); |
1da177e4 | 93 | static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *dev); |
1da177e4 LT |
94 | static void ibmveth_set_multicast_list(struct net_device *dev); |
95 | static int ibmveth_change_mtu(struct net_device *dev, int new_mtu); | |
96 | static void ibmveth_proc_register_driver(void); | |
97 | static void ibmveth_proc_unregister_driver(void); | |
98 | static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter); | |
99 | static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter); | |
7d12e780 | 100 | static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance); |
493a684a | 101 | static void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter); |
1096d63d | 102 | static unsigned long ibmveth_get_desired_dma(struct vio_dev *vdev); |
860f242e | 103 | static struct kobj_type ktype_veth_pool; |
1da177e4 | 104 | |
1096d63d | 105 | |
1da177e4 | 106 | #ifdef CONFIG_PROC_FS |
457c4cbc | 107 | #define IBMVETH_PROC_DIR "ibmveth" |
1da177e4 LT |
108 | static struct proc_dir_entry *ibmveth_proc_dir; |
109 | #endif | |
110 | ||
111 | static const char ibmveth_driver_name[] = "ibmveth"; | |
112 | static const char ibmveth_driver_string[] = "IBM i/pSeries Virtual Ethernet Driver"; | |
113 | #define ibmveth_driver_version "1.03" | |
114 | ||
115 | MODULE_AUTHOR("Santiago Leon <santil@us.ibm.com>"); | |
116 | MODULE_DESCRIPTION("IBM i/pSeries Virtual Ethernet Driver"); | |
117 | MODULE_LICENSE("GPL"); | |
118 | MODULE_VERSION(ibmveth_driver_version); | |
119 | ||
ddbb4de9 BK |
120 | struct ibmveth_stat { |
121 | char name[ETH_GSTRING_LEN]; | |
122 | int offset; | |
123 | }; | |
124 | ||
125 | #define IBMVETH_STAT_OFF(stat) offsetof(struct ibmveth_adapter, stat) | |
126 | #define IBMVETH_GET_STAT(a, off) *((u64 *)(((unsigned long)(a)) + off)) | |
127 | ||
128 | struct ibmveth_stat ibmveth_stats[] = { | |
129 | { "replenish_task_cycles", IBMVETH_STAT_OFF(replenish_task_cycles) }, | |
130 | { "replenish_no_mem", IBMVETH_STAT_OFF(replenish_no_mem) }, | |
131 | { "replenish_add_buff_failure", IBMVETH_STAT_OFF(replenish_add_buff_failure) }, | |
132 | { "replenish_add_buff_success", IBMVETH_STAT_OFF(replenish_add_buff_success) }, | |
133 | { "rx_invalid_buffer", IBMVETH_STAT_OFF(rx_invalid_buffer) }, | |
134 | { "rx_no_buffer", IBMVETH_STAT_OFF(rx_no_buffer) }, | |
ddbb4de9 BK |
135 | { "tx_map_failed", IBMVETH_STAT_OFF(tx_map_failed) }, |
136 | { "tx_send_failed", IBMVETH_STAT_OFF(tx_send_failed) }, | |
137 | }; | |
138 | ||
1da177e4 | 139 | /* simple methods of getting data from the current rxq entry */ |
79ef4a4d BK |
140 | static inline u32 ibmveth_rxq_flags(struct ibmveth_adapter *adapter) |
141 | { | |
142 | return adapter->rx_queue.queue_addr[adapter->rx_queue.index].flags_off; | |
143 | } | |
144 | ||
145 | static inline int ibmveth_rxq_toggle(struct ibmveth_adapter *adapter) | |
146 | { | |
147 | return (ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_TOGGLE) >> IBMVETH_RXQ_TOGGLE_SHIFT; | |
148 | } | |
149 | ||
1da177e4 LT |
150 | static inline int ibmveth_rxq_pending_buffer(struct ibmveth_adapter *adapter) |
151 | { | |
79ef4a4d | 152 | return (ibmveth_rxq_toggle(adapter) == adapter->rx_queue.toggle); |
1da177e4 LT |
153 | } |
154 | ||
155 | static inline int ibmveth_rxq_buffer_valid(struct ibmveth_adapter *adapter) | |
156 | { | |
79ef4a4d | 157 | return (ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_VALID); |
1da177e4 LT |
158 | } |
159 | ||
160 | static inline int ibmveth_rxq_frame_offset(struct ibmveth_adapter *adapter) | |
161 | { | |
79ef4a4d | 162 | return (ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_OFF_MASK); |
1da177e4 LT |
163 | } |
164 | ||
165 | static inline int ibmveth_rxq_frame_length(struct ibmveth_adapter *adapter) | |
166 | { | |
167 | return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].length); | |
168 | } | |
169 | ||
f4ff2872 BK |
170 | static inline int ibmveth_rxq_csum_good(struct ibmveth_adapter *adapter) |
171 | { | |
79ef4a4d | 172 | return (ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_CSUM_GOOD); |
f4ff2872 BK |
173 | } |
174 | ||
1da177e4 | 175 | /* setup the initial settings for a buffer pool */ |
860f242e | 176 | 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 |
177 | { |
178 | pool->size = pool_size; | |
179 | pool->index = pool_index; | |
180 | pool->buff_size = buff_size; | |
181 | pool->threshold = pool_size / 2; | |
860f242e | 182 | pool->active = pool_active; |
1da177e4 LT |
183 | } |
184 | ||
185 | /* allocate and setup an buffer pool - called during open */ | |
186 | static int ibmveth_alloc_buffer_pool(struct ibmveth_buff_pool *pool) | |
187 | { | |
188 | int i; | |
189 | ||
d7fbeba6 | 190 | pool->free_map = kmalloc(sizeof(u16) * pool->size, GFP_KERNEL); |
1da177e4 LT |
191 | |
192 | if(!pool->free_map) { | |
193 | return -1; | |
194 | } | |
195 | ||
d7fbeba6 | 196 | pool->dma_addr = kmalloc(sizeof(dma_addr_t) * pool->size, GFP_KERNEL); |
1da177e4 LT |
197 | if(!pool->dma_addr) { |
198 | kfree(pool->free_map); | |
199 | pool->free_map = NULL; | |
200 | return -1; | |
201 | } | |
202 | ||
a05abcb5 | 203 | pool->skbuff = kcalloc(pool->size, sizeof(void *), GFP_KERNEL); |
1da177e4 LT |
204 | |
205 | if(!pool->skbuff) { | |
206 | kfree(pool->dma_addr); | |
207 | pool->dma_addr = NULL; | |
208 | ||
209 | kfree(pool->free_map); | |
210 | pool->free_map = NULL; | |
211 | return -1; | |
212 | } | |
213 | ||
1da177e4 LT |
214 | memset(pool->dma_addr, 0, sizeof(dma_addr_t) * pool->size); |
215 | ||
216 | for(i = 0; i < pool->size; ++i) { | |
217 | pool->free_map[i] = i; | |
218 | } | |
219 | ||
220 | atomic_set(&pool->available, 0); | |
221 | pool->producer_index = 0; | |
222 | pool->consumer_index = 0; | |
223 | ||
224 | return 0; | |
225 | } | |
226 | ||
227 | /* replenish the buffers for a pool. note that we don't need to | |
228 | * skb_reserve these since they are used for incoming... | |
229 | */ | |
230 | static void ibmveth_replenish_buffer_pool(struct ibmveth_adapter *adapter, struct ibmveth_buff_pool *pool) | |
231 | { | |
232 | u32 i; | |
233 | u32 count = pool->size - atomic_read(&pool->available); | |
234 | u32 buffers_added = 0; | |
1096d63d RJ |
235 | struct sk_buff *skb; |
236 | unsigned int free_index, index; | |
237 | u64 correlator; | |
238 | unsigned long lpar_rc; | |
239 | dma_addr_t dma_addr; | |
1da177e4 LT |
240 | |
241 | mb(); | |
242 | ||
243 | for(i = 0; i < count; ++i) { | |
1da177e4 | 244 | union ibmveth_buf_desc desc; |
1da177e4 LT |
245 | |
246 | skb = alloc_skb(pool->buff_size, GFP_ATOMIC); | |
247 | ||
248 | if(!skb) { | |
249 | ibmveth_debug_printk("replenish: unable to allocate skb\n"); | |
250 | adapter->replenish_no_mem++; | |
251 | break; | |
252 | } | |
253 | ||
047a66d4 DG |
254 | free_index = pool->consumer_index; |
255 | pool->consumer_index = (pool->consumer_index + 1) % pool->size; | |
1da177e4 | 256 | index = pool->free_map[free_index]; |
d7fbeba6 | 257 | |
1da177e4 LT |
258 | ibmveth_assert(index != IBM_VETH_INVALID_MAP); |
259 | ibmveth_assert(pool->skbuff[index] == NULL); | |
260 | ||
261 | dma_addr = dma_map_single(&adapter->vdev->dev, skb->data, | |
262 | pool->buff_size, DMA_FROM_DEVICE); | |
263 | ||
c713e7cb | 264 | if (dma_mapping_error(&adapter->vdev->dev, dma_addr)) |
1096d63d RJ |
265 | goto failure; |
266 | ||
1da177e4 LT |
267 | pool->free_map[free_index] = IBM_VETH_INVALID_MAP; |
268 | pool->dma_addr[index] = dma_addr; | |
269 | pool->skbuff[index] = skb; | |
270 | ||
271 | correlator = ((u64)pool->index << 32) | index; | |
272 | *(u64*)skb->data = correlator; | |
273 | ||
79ef4a4d | 274 | desc.fields.flags_len = IBMVETH_BUF_VALID | pool->buff_size; |
d7fbeba6 | 275 | desc.fields.address = dma_addr; |
1da177e4 LT |
276 | |
277 | lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc); | |
d7fbeba6 | 278 | |
1096d63d RJ |
279 | if (lpar_rc != H_SUCCESS) |
280 | goto failure; | |
281 | else { | |
1da177e4 LT |
282 | buffers_added++; |
283 | adapter->replenish_add_buff_success++; | |
284 | } | |
285 | } | |
d7fbeba6 | 286 | |
1096d63d RJ |
287 | mb(); |
288 | atomic_add(buffers_added, &(pool->available)); | |
289 | return; | |
290 | ||
291 | failure: | |
292 | pool->free_map[free_index] = index; | |
293 | pool->skbuff[index] = NULL; | |
294 | if (pool->consumer_index == 0) | |
295 | pool->consumer_index = pool->size - 1; | |
296 | else | |
297 | pool->consumer_index--; | |
c713e7cb | 298 | if (!dma_mapping_error(&adapter->vdev->dev, dma_addr)) |
1096d63d RJ |
299 | dma_unmap_single(&adapter->vdev->dev, |
300 | pool->dma_addr[index], pool->buff_size, | |
301 | DMA_FROM_DEVICE); | |
302 | dev_kfree_skb_any(skb); | |
303 | adapter->replenish_add_buff_failure++; | |
304 | ||
1da177e4 LT |
305 | mb(); |
306 | atomic_add(buffers_added, &(pool->available)); | |
307 | } | |
308 | ||
e2adbcb4 | 309 | /* replenish routine */ |
d7fbeba6 | 310 | static void ibmveth_replenish_task(struct ibmveth_adapter *adapter) |
1da177e4 | 311 | { |
b6d35182 SL |
312 | int i; |
313 | ||
1da177e4 LT |
314 | adapter->replenish_task_cycles++; |
315 | ||
1096d63d | 316 | for (i = (IbmVethNumBufferPools - 1); i >= 0; i--) |
b6d35182 | 317 | if(adapter->rx_buff_pool[i].active) |
d7fbeba6 | 318 | ibmveth_replenish_buffer_pool(adapter, |
b6d35182 | 319 | &adapter->rx_buff_pool[i]); |
1da177e4 LT |
320 | |
321 | adapter->rx_no_buffer = *(u64*)(((char*)adapter->buffer_list_addr) + 4096 - 8); | |
1da177e4 LT |
322 | } |
323 | ||
324 | /* empty and free ana buffer pool - also used to do cleanup in error paths */ | |
325 | static void ibmveth_free_buffer_pool(struct ibmveth_adapter *adapter, struct ibmveth_buff_pool *pool) | |
326 | { | |
327 | int i; | |
328 | ||
b4558ea9 JJ |
329 | kfree(pool->free_map); |
330 | pool->free_map = NULL; | |
1da177e4 LT |
331 | |
332 | if(pool->skbuff && pool->dma_addr) { | |
333 | for(i = 0; i < pool->size; ++i) { | |
334 | struct sk_buff *skb = pool->skbuff[i]; | |
335 | if(skb) { | |
336 | dma_unmap_single(&adapter->vdev->dev, | |
337 | pool->dma_addr[i], | |
338 | pool->buff_size, | |
339 | DMA_FROM_DEVICE); | |
340 | dev_kfree_skb_any(skb); | |
341 | pool->skbuff[i] = NULL; | |
342 | } | |
343 | } | |
344 | } | |
345 | ||
346 | if(pool->dma_addr) { | |
347 | kfree(pool->dma_addr); | |
348 | pool->dma_addr = NULL; | |
349 | } | |
350 | ||
351 | if(pool->skbuff) { | |
352 | kfree(pool->skbuff); | |
353 | pool->skbuff = NULL; | |
354 | } | |
355 | } | |
356 | ||
357 | /* remove a buffer from a pool */ | |
358 | static void ibmveth_remove_buffer_from_pool(struct ibmveth_adapter *adapter, u64 correlator) | |
359 | { | |
360 | unsigned int pool = correlator >> 32; | |
361 | unsigned int index = correlator & 0xffffffffUL; | |
362 | unsigned int free_index; | |
363 | struct sk_buff *skb; | |
364 | ||
365 | ibmveth_assert(pool < IbmVethNumBufferPools); | |
366 | ibmveth_assert(index < adapter->rx_buff_pool[pool].size); | |
367 | ||
368 | skb = adapter->rx_buff_pool[pool].skbuff[index]; | |
369 | ||
370 | ibmveth_assert(skb != NULL); | |
371 | ||
372 | adapter->rx_buff_pool[pool].skbuff[index] = NULL; | |
373 | ||
374 | dma_unmap_single(&adapter->vdev->dev, | |
375 | adapter->rx_buff_pool[pool].dma_addr[index], | |
376 | adapter->rx_buff_pool[pool].buff_size, | |
377 | DMA_FROM_DEVICE); | |
378 | ||
047a66d4 DG |
379 | free_index = adapter->rx_buff_pool[pool].producer_index; |
380 | adapter->rx_buff_pool[pool].producer_index | |
381 | = (adapter->rx_buff_pool[pool].producer_index + 1) | |
382 | % adapter->rx_buff_pool[pool].size; | |
1da177e4 LT |
383 | adapter->rx_buff_pool[pool].free_map[free_index] = index; |
384 | ||
385 | mb(); | |
386 | ||
387 | atomic_dec(&(adapter->rx_buff_pool[pool].available)); | |
388 | } | |
389 | ||
390 | /* get the current buffer on the rx queue */ | |
391 | static inline struct sk_buff *ibmveth_rxq_get_buffer(struct ibmveth_adapter *adapter) | |
392 | { | |
393 | u64 correlator = adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator; | |
394 | unsigned int pool = correlator >> 32; | |
395 | unsigned int index = correlator & 0xffffffffUL; | |
396 | ||
397 | ibmveth_assert(pool < IbmVethNumBufferPools); | |
398 | ibmveth_assert(index < adapter->rx_buff_pool[pool].size); | |
399 | ||
400 | return adapter->rx_buff_pool[pool].skbuff[index]; | |
401 | } | |
402 | ||
403 | /* recycle the current buffer on the rx queue */ | |
404 | static void ibmveth_rxq_recycle_buffer(struct ibmveth_adapter *adapter) | |
405 | { | |
406 | u32 q_index = adapter->rx_queue.index; | |
407 | u64 correlator = adapter->rx_queue.queue_addr[q_index].correlator; | |
408 | unsigned int pool = correlator >> 32; | |
409 | unsigned int index = correlator & 0xffffffffUL; | |
410 | union ibmveth_buf_desc desc; | |
411 | unsigned long lpar_rc; | |
412 | ||
413 | ibmveth_assert(pool < IbmVethNumBufferPools); | |
414 | ibmveth_assert(index < adapter->rx_buff_pool[pool].size); | |
415 | ||
b6d35182 SL |
416 | if(!adapter->rx_buff_pool[pool].active) { |
417 | ibmveth_rxq_harvest_buffer(adapter); | |
418 | ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[pool]); | |
419 | return; | |
420 | } | |
421 | ||
79ef4a4d BK |
422 | desc.fields.flags_len = IBMVETH_BUF_VALID | |
423 | adapter->rx_buff_pool[pool].buff_size; | |
1da177e4 LT |
424 | desc.fields.address = adapter->rx_buff_pool[pool].dma_addr[index]; |
425 | ||
426 | lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc); | |
d7fbeba6 | 427 | |
706c8c93 | 428 | if(lpar_rc != H_SUCCESS) { |
1da177e4 LT |
429 | ibmveth_debug_printk("h_add_logical_lan_buffer failed during recycle rc=%ld", lpar_rc); |
430 | ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator); | |
431 | } | |
432 | ||
433 | if(++adapter->rx_queue.index == adapter->rx_queue.num_slots) { | |
434 | adapter->rx_queue.index = 0; | |
435 | adapter->rx_queue.toggle = !adapter->rx_queue.toggle; | |
436 | } | |
437 | } | |
438 | ||
493a684a | 439 | static void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter) |
1da177e4 LT |
440 | { |
441 | ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator); | |
442 | ||
443 | if(++adapter->rx_queue.index == adapter->rx_queue.num_slots) { | |
444 | adapter->rx_queue.index = 0; | |
445 | adapter->rx_queue.toggle = !adapter->rx_queue.toggle; | |
446 | } | |
447 | } | |
448 | ||
449 | static void ibmveth_cleanup(struct ibmveth_adapter *adapter) | |
450 | { | |
b6d35182 | 451 | int i; |
8d8bb39b | 452 | struct device *dev = &adapter->vdev->dev; |
b6d35182 | 453 | |
1da177e4 | 454 | if(adapter->buffer_list_addr != NULL) { |
8d8bb39b FT |
455 | if (!dma_mapping_error(dev, adapter->buffer_list_dma)) { |
456 | dma_unmap_single(dev, adapter->buffer_list_dma, 4096, | |
1da177e4 LT |
457 | DMA_BIDIRECTIONAL); |
458 | adapter->buffer_list_dma = DMA_ERROR_CODE; | |
459 | } | |
460 | free_page((unsigned long)adapter->buffer_list_addr); | |
461 | adapter->buffer_list_addr = NULL; | |
d7fbeba6 | 462 | } |
1da177e4 LT |
463 | |
464 | if(adapter->filter_list_addr != NULL) { | |
8d8bb39b FT |
465 | if (!dma_mapping_error(dev, adapter->filter_list_dma)) { |
466 | dma_unmap_single(dev, adapter->filter_list_dma, 4096, | |
1da177e4 LT |
467 | DMA_BIDIRECTIONAL); |
468 | adapter->filter_list_dma = DMA_ERROR_CODE; | |
469 | } | |
470 | free_page((unsigned long)adapter->filter_list_addr); | |
471 | adapter->filter_list_addr = NULL; | |
472 | } | |
473 | ||
474 | if(adapter->rx_queue.queue_addr != NULL) { | |
8d8bb39b FT |
475 | if (!dma_mapping_error(dev, adapter->rx_queue.queue_dma)) { |
476 | dma_unmap_single(dev, | |
1da177e4 LT |
477 | adapter->rx_queue.queue_dma, |
478 | adapter->rx_queue.queue_len, | |
479 | DMA_BIDIRECTIONAL); | |
480 | adapter->rx_queue.queue_dma = DMA_ERROR_CODE; | |
481 | } | |
482 | kfree(adapter->rx_queue.queue_addr); | |
483 | adapter->rx_queue.queue_addr = NULL; | |
484 | } | |
485 | ||
b6d35182 | 486 | for(i = 0; i<IbmVethNumBufferPools; i++) |
860f242e | 487 | if (adapter->rx_buff_pool[i].active) |
d7fbeba6 | 488 | ibmveth_free_buffer_pool(adapter, |
860f242e | 489 | &adapter->rx_buff_pool[i]); |
1096d63d RJ |
490 | |
491 | if (adapter->bounce_buffer != NULL) { | |
c713e7cb | 492 | if (!dma_mapping_error(dev, adapter->bounce_buffer_dma)) { |
1096d63d RJ |
493 | dma_unmap_single(&adapter->vdev->dev, |
494 | adapter->bounce_buffer_dma, | |
495 | adapter->netdev->mtu + IBMVETH_BUFF_OH, | |
496 | DMA_BIDIRECTIONAL); | |
497 | adapter->bounce_buffer_dma = DMA_ERROR_CODE; | |
498 | } | |
499 | kfree(adapter->bounce_buffer); | |
500 | adapter->bounce_buffer = NULL; | |
501 | } | |
1da177e4 LT |
502 | } |
503 | ||
bbedefcc ME |
504 | static int ibmveth_register_logical_lan(struct ibmveth_adapter *adapter, |
505 | union ibmveth_buf_desc rxq_desc, u64 mac_address) | |
506 | { | |
507 | int rc, try_again = 1; | |
508 | ||
509 | /* After a kexec the adapter will still be open, so our attempt to | |
510 | * open it will fail. So if we get a failure we free the adapter and | |
511 | * try again, but only once. */ | |
512 | retry: | |
513 | rc = h_register_logical_lan(adapter->vdev->unit_address, | |
514 | adapter->buffer_list_dma, rxq_desc.desc, | |
515 | adapter->filter_list_dma, mac_address); | |
516 | ||
517 | if (rc != H_SUCCESS && try_again) { | |
518 | do { | |
519 | rc = h_free_logical_lan(adapter->vdev->unit_address); | |
520 | } while (H_IS_LONG_BUSY(rc) || (rc == H_BUSY)); | |
521 | ||
522 | try_again = 0; | |
523 | goto retry; | |
524 | } | |
525 | ||
526 | return rc; | |
527 | } | |
528 | ||
1da177e4 LT |
529 | static int ibmveth_open(struct net_device *netdev) |
530 | { | |
4cf1653a | 531 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 532 | u64 mac_address = 0; |
b6d35182 | 533 | int rxq_entries = 1; |
1da177e4 LT |
534 | unsigned long lpar_rc; |
535 | int rc; | |
536 | union ibmveth_buf_desc rxq_desc; | |
b6d35182 | 537 | int i; |
8d8bb39b | 538 | struct device *dev; |
1da177e4 LT |
539 | |
540 | ibmveth_debug_printk("open starting\n"); | |
541 | ||
bea3348e SH |
542 | napi_enable(&adapter->napi); |
543 | ||
b6d35182 SL |
544 | for(i = 0; i<IbmVethNumBufferPools; i++) |
545 | rxq_entries += adapter->rx_buff_pool[i].size; | |
d7fbeba6 | 546 | |
1da177e4 LT |
547 | adapter->buffer_list_addr = (void*) get_zeroed_page(GFP_KERNEL); |
548 | adapter->filter_list_addr = (void*) get_zeroed_page(GFP_KERNEL); | |
d7fbeba6 | 549 | |
1da177e4 LT |
550 | if(!adapter->buffer_list_addr || !adapter->filter_list_addr) { |
551 | ibmveth_error_printk("unable to allocate filter or buffer list pages\n"); | |
552 | ibmveth_cleanup(adapter); | |
bea3348e | 553 | napi_disable(&adapter->napi); |
1da177e4 LT |
554 | return -ENOMEM; |
555 | } | |
556 | ||
557 | adapter->rx_queue.queue_len = sizeof(struct ibmveth_rx_q_entry) * rxq_entries; | |
558 | adapter->rx_queue.queue_addr = kmalloc(adapter->rx_queue.queue_len, GFP_KERNEL); | |
559 | ||
560 | if(!adapter->rx_queue.queue_addr) { | |
561 | ibmveth_error_printk("unable to allocate rx queue pages\n"); | |
562 | ibmveth_cleanup(adapter); | |
bea3348e | 563 | napi_disable(&adapter->napi); |
1da177e4 LT |
564 | return -ENOMEM; |
565 | } | |
566 | ||
8d8bb39b FT |
567 | dev = &adapter->vdev->dev; |
568 | ||
569 | adapter->buffer_list_dma = dma_map_single(dev, | |
1da177e4 | 570 | adapter->buffer_list_addr, 4096, DMA_BIDIRECTIONAL); |
8d8bb39b | 571 | adapter->filter_list_dma = dma_map_single(dev, |
1da177e4 | 572 | adapter->filter_list_addr, 4096, DMA_BIDIRECTIONAL); |
8d8bb39b | 573 | adapter->rx_queue.queue_dma = dma_map_single(dev, |
1da177e4 LT |
574 | adapter->rx_queue.queue_addr, |
575 | adapter->rx_queue.queue_len, DMA_BIDIRECTIONAL); | |
576 | ||
8d8bb39b FT |
577 | if ((dma_mapping_error(dev, adapter->buffer_list_dma)) || |
578 | (dma_mapping_error(dev, adapter->filter_list_dma)) || | |
579 | (dma_mapping_error(dev, adapter->rx_queue.queue_dma))) { | |
1da177e4 LT |
580 | ibmveth_error_printk("unable to map filter or buffer list pages\n"); |
581 | ibmveth_cleanup(adapter); | |
bea3348e | 582 | napi_disable(&adapter->napi); |
1da177e4 LT |
583 | return -ENOMEM; |
584 | } | |
585 | ||
586 | adapter->rx_queue.index = 0; | |
587 | adapter->rx_queue.num_slots = rxq_entries; | |
588 | adapter->rx_queue.toggle = 1; | |
589 | ||
1da177e4 LT |
590 | memcpy(&mac_address, netdev->dev_addr, netdev->addr_len); |
591 | mac_address = mac_address >> 16; | |
592 | ||
79ef4a4d | 593 | rxq_desc.fields.flags_len = IBMVETH_BUF_VALID | adapter->rx_queue.queue_len; |
1da177e4 LT |
594 | rxq_desc.fields.address = adapter->rx_queue.queue_dma; |
595 | ||
596 | ibmveth_debug_printk("buffer list @ 0x%p\n", adapter->buffer_list_addr); | |
597 | ibmveth_debug_printk("filter list @ 0x%p\n", adapter->filter_list_addr); | |
598 | ibmveth_debug_printk("receive q @ 0x%p\n", adapter->rx_queue.queue_addr); | |
599 | ||
4347ef15 SL |
600 | h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE); |
601 | ||
bbedefcc | 602 | lpar_rc = ibmveth_register_logical_lan(adapter, rxq_desc, mac_address); |
1da177e4 | 603 | |
706c8c93 | 604 | if(lpar_rc != H_SUCCESS) { |
1da177e4 | 605 | ibmveth_error_printk("h_register_logical_lan failed with %ld\n", lpar_rc); |
a1c5a893 | 606 | ibmveth_error_printk("buffer TCE:0x%llx filter TCE:0x%llx rxq desc:0x%llx MAC:0x%llx\n", |
1da177e4 LT |
607 | adapter->buffer_list_dma, |
608 | adapter->filter_list_dma, | |
609 | rxq_desc.desc, | |
610 | mac_address); | |
611 | ibmveth_cleanup(adapter); | |
bea3348e | 612 | napi_disable(&adapter->napi); |
d7fbeba6 | 613 | return -ENONET; |
1da177e4 LT |
614 | } |
615 | ||
860f242e SL |
616 | for(i = 0; i<IbmVethNumBufferPools; i++) { |
617 | if(!adapter->rx_buff_pool[i].active) | |
618 | continue; | |
619 | if (ibmveth_alloc_buffer_pool(&adapter->rx_buff_pool[i])) { | |
620 | ibmveth_error_printk("unable to alloc pool\n"); | |
621 | adapter->rx_buff_pool[i].active = 0; | |
622 | ibmveth_cleanup(adapter); | |
bea3348e | 623 | napi_disable(&adapter->napi); |
860f242e SL |
624 | return -ENOMEM ; |
625 | } | |
626 | } | |
627 | ||
1da177e4 | 628 | ibmveth_debug_printk("registering irq 0x%x\n", netdev->irq); |
a0607fd3 | 629 | if((rc = request_irq(netdev->irq, ibmveth_interrupt, 0, netdev->name, netdev)) != 0) { |
1da177e4 LT |
630 | ibmveth_error_printk("unable to request irq 0x%x, rc %d\n", netdev->irq, rc); |
631 | do { | |
632 | rc = h_free_logical_lan(adapter->vdev->unit_address); | |
706c8c93 | 633 | } while (H_IS_LONG_BUSY(rc) || (rc == H_BUSY)); |
1da177e4 LT |
634 | |
635 | ibmveth_cleanup(adapter); | |
bea3348e | 636 | napi_disable(&adapter->napi); |
1da177e4 LT |
637 | return rc; |
638 | } | |
639 | ||
1096d63d RJ |
640 | adapter->bounce_buffer = |
641 | kmalloc(netdev->mtu + IBMVETH_BUFF_OH, GFP_KERNEL); | |
642 | if (!adapter->bounce_buffer) { | |
643 | ibmveth_error_printk("unable to allocate bounce buffer\n"); | |
644 | ibmveth_cleanup(adapter); | |
645 | napi_disable(&adapter->napi); | |
646 | return -ENOMEM; | |
647 | } | |
648 | adapter->bounce_buffer_dma = | |
649 | dma_map_single(&adapter->vdev->dev, adapter->bounce_buffer, | |
650 | netdev->mtu + IBMVETH_BUFF_OH, DMA_BIDIRECTIONAL); | |
8d8bb39b | 651 | if (dma_mapping_error(dev, adapter->bounce_buffer_dma)) { |
1096d63d RJ |
652 | ibmveth_error_printk("unable to map bounce buffer\n"); |
653 | ibmveth_cleanup(adapter); | |
654 | napi_disable(&adapter->napi); | |
655 | return -ENOMEM; | |
656 | } | |
657 | ||
e2adbcb4 | 658 | ibmveth_debug_printk("initial replenish cycle\n"); |
7d12e780 | 659 | ibmveth_interrupt(netdev->irq, netdev); |
1da177e4 | 660 | |
e2adbcb4 | 661 | netif_start_queue(netdev); |
1da177e4 LT |
662 | |
663 | ibmveth_debug_printk("open complete\n"); | |
664 | ||
665 | return 0; | |
666 | } | |
667 | ||
668 | static int ibmveth_close(struct net_device *netdev) | |
669 | { | |
4cf1653a | 670 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 671 | long lpar_rc; |
d7fbeba6 | 672 | |
1da177e4 LT |
673 | ibmveth_debug_printk("close starting\n"); |
674 | ||
bea3348e SH |
675 | napi_disable(&adapter->napi); |
676 | ||
860f242e SL |
677 | if (!adapter->pool_config) |
678 | netif_stop_queue(netdev); | |
1da177e4 | 679 | |
ee2e6114 | 680 | h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE); |
1da177e4 | 681 | |
1da177e4 LT |
682 | do { |
683 | lpar_rc = h_free_logical_lan(adapter->vdev->unit_address); | |
706c8c93 | 684 | } while (H_IS_LONG_BUSY(lpar_rc) || (lpar_rc == H_BUSY)); |
1da177e4 | 685 | |
706c8c93 | 686 | if(lpar_rc != H_SUCCESS) |
1da177e4 LT |
687 | { |
688 | ibmveth_error_printk("h_free_logical_lan failed with %lx, continuing with close\n", | |
689 | lpar_rc); | |
690 | } | |
691 | ||
ee2e6114 RJ |
692 | free_irq(netdev->irq, netdev); |
693 | ||
1da177e4 LT |
694 | adapter->rx_no_buffer = *(u64*)(((char*)adapter->buffer_list_addr) + 4096 - 8); |
695 | ||
696 | ibmveth_cleanup(adapter); | |
697 | ||
698 | ibmveth_debug_printk("close complete\n"); | |
699 | ||
700 | return 0; | |
701 | } | |
702 | ||
703 | static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) { | |
704 | cmd->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE); | |
705 | cmd->advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg | ADVERTISED_FIBRE); | |
706 | cmd->speed = SPEED_1000; | |
707 | cmd->duplex = DUPLEX_FULL; | |
708 | cmd->port = PORT_FIBRE; | |
709 | cmd->phy_address = 0; | |
710 | cmd->transceiver = XCVR_INTERNAL; | |
711 | cmd->autoneg = AUTONEG_ENABLE; | |
712 | cmd->maxtxpkt = 0; | |
713 | cmd->maxrxpkt = 1; | |
714 | return 0; | |
715 | } | |
716 | ||
717 | static void netdev_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info) { | |
718 | strncpy(info->driver, ibmveth_driver_name, sizeof(info->driver) - 1); | |
719 | strncpy(info->version, ibmveth_driver_version, sizeof(info->version) - 1); | |
720 | } | |
721 | ||
722 | static u32 netdev_get_link(struct net_device *dev) { | |
723 | return 1; | |
724 | } | |
725 | ||
5fc7e01c BK |
726 | static void ibmveth_set_rx_csum_flags(struct net_device *dev, u32 data) |
727 | { | |
4cf1653a | 728 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
5fc7e01c BK |
729 | |
730 | if (data) | |
731 | adapter->rx_csum = 1; | |
732 | else { | |
733 | /* | |
734 | * Since the ibmveth firmware interface does not have the concept of | |
735 | * separate tx/rx checksum offload enable, if rx checksum is disabled | |
736 | * we also have to disable tx checksum offload. Once we disable rx | |
737 | * checksum offload, we are no longer allowed to send tx buffers that | |
738 | * are not properly checksummed. | |
739 | */ | |
740 | adapter->rx_csum = 0; | |
741 | dev->features &= ~NETIF_F_IP_CSUM; | |
742 | } | |
743 | } | |
744 | ||
745 | static void ibmveth_set_tx_csum_flags(struct net_device *dev, u32 data) | |
746 | { | |
4cf1653a | 747 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
5fc7e01c BK |
748 | |
749 | if (data) { | |
750 | dev->features |= NETIF_F_IP_CSUM; | |
751 | adapter->rx_csum = 1; | |
752 | } else | |
753 | dev->features &= ~NETIF_F_IP_CSUM; | |
754 | } | |
755 | ||
756 | static int ibmveth_set_csum_offload(struct net_device *dev, u32 data, | |
757 | void (*done) (struct net_device *, u32)) | |
758 | { | |
4cf1653a | 759 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
ff5bfc35 | 760 | unsigned long set_attr, clr_attr, ret_attr; |
5fc7e01c BK |
761 | long ret; |
762 | int rc1 = 0, rc2 = 0; | |
763 | int restart = 0; | |
764 | ||
765 | if (netif_running(dev)) { | |
766 | restart = 1; | |
767 | adapter->pool_config = 1; | |
768 | ibmveth_close(dev); | |
769 | adapter->pool_config = 0; | |
770 | } | |
771 | ||
79ef4a4d BK |
772 | set_attr = 0; |
773 | clr_attr = 0; | |
5fc7e01c BK |
774 | |
775 | if (data) | |
79ef4a4d | 776 | set_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM; |
5fc7e01c | 777 | else |
79ef4a4d | 778 | clr_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM; |
5fc7e01c | 779 | |
79ef4a4d | 780 | ret = h_illan_attributes(adapter->vdev->unit_address, 0, 0, &ret_attr); |
5fc7e01c | 781 | |
79ef4a4d BK |
782 | if (ret == H_SUCCESS && !(ret_attr & IBMVETH_ILLAN_ACTIVE_TRUNK) && |
783 | !(ret_attr & IBMVETH_ILLAN_TRUNK_PRI_MASK) && | |
784 | (ret_attr & IBMVETH_ILLAN_PADDED_PKT_CSUM)) { | |
785 | ret = h_illan_attributes(adapter->vdev->unit_address, clr_attr, | |
786 | set_attr, &ret_attr); | |
5fc7e01c BK |
787 | |
788 | if (ret != H_SUCCESS) { | |
789 | rc1 = -EIO; | |
790 | ibmveth_error_printk("unable to change checksum offload settings." | |
791 | " %d rc=%ld\n", data, ret); | |
792 | ||
793 | ret = h_illan_attributes(adapter->vdev->unit_address, | |
79ef4a4d | 794 | set_attr, clr_attr, &ret_attr); |
5fc7e01c BK |
795 | } else |
796 | done(dev, data); | |
797 | } else { | |
798 | rc1 = -EIO; | |
799 | ibmveth_error_printk("unable to change checksum offload settings." | |
79ef4a4d | 800 | " %d rc=%ld ret_attr=%lx\n", data, ret, ret_attr); |
5fc7e01c BK |
801 | } |
802 | ||
803 | if (restart) | |
804 | rc2 = ibmveth_open(dev); | |
805 | ||
806 | return rc1 ? rc1 : rc2; | |
807 | } | |
808 | ||
809 | static int ibmveth_set_rx_csum(struct net_device *dev, u32 data) | |
810 | { | |
4cf1653a | 811 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
5fc7e01c BK |
812 | |
813 | if ((data && adapter->rx_csum) || (!data && !adapter->rx_csum)) | |
814 | return 0; | |
815 | ||
816 | return ibmveth_set_csum_offload(dev, data, ibmveth_set_rx_csum_flags); | |
817 | } | |
818 | ||
819 | static int ibmveth_set_tx_csum(struct net_device *dev, u32 data) | |
820 | { | |
4cf1653a | 821 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
5fc7e01c BK |
822 | int rc = 0; |
823 | ||
824 | if (data && (dev->features & NETIF_F_IP_CSUM)) | |
825 | return 0; | |
826 | if (!data && !(dev->features & NETIF_F_IP_CSUM)) | |
827 | return 0; | |
828 | ||
829 | if (data && !adapter->rx_csum) | |
830 | rc = ibmveth_set_csum_offload(dev, data, ibmveth_set_tx_csum_flags); | |
831 | else | |
832 | ibmveth_set_tx_csum_flags(dev, data); | |
833 | ||
834 | return rc; | |
835 | } | |
836 | ||
837 | static u32 ibmveth_get_rx_csum(struct net_device *dev) | |
838 | { | |
4cf1653a | 839 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
5fc7e01c BK |
840 | return adapter->rx_csum; |
841 | } | |
842 | ||
ddbb4de9 BK |
843 | static void ibmveth_get_strings(struct net_device *dev, u32 stringset, u8 *data) |
844 | { | |
845 | int i; | |
846 | ||
847 | if (stringset != ETH_SS_STATS) | |
848 | return; | |
849 | ||
850 | for (i = 0; i < ARRAY_SIZE(ibmveth_stats); i++, data += ETH_GSTRING_LEN) | |
851 | memcpy(data, ibmveth_stats[i].name, ETH_GSTRING_LEN); | |
852 | } | |
853 | ||
b9f2c044 | 854 | static int ibmveth_get_sset_count(struct net_device *dev, int sset) |
ddbb4de9 | 855 | { |
b9f2c044 JG |
856 | switch (sset) { |
857 | case ETH_SS_STATS: | |
858 | return ARRAY_SIZE(ibmveth_stats); | |
859 | default: | |
860 | return -EOPNOTSUPP; | |
861 | } | |
ddbb4de9 BK |
862 | } |
863 | ||
864 | static void ibmveth_get_ethtool_stats(struct net_device *dev, | |
865 | struct ethtool_stats *stats, u64 *data) | |
866 | { | |
867 | int i; | |
4cf1653a | 868 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
ddbb4de9 BK |
869 | |
870 | for (i = 0; i < ARRAY_SIZE(ibmveth_stats); i++) | |
871 | data[i] = IBMVETH_GET_STAT(adapter, ibmveth_stats[i].offset); | |
872 | } | |
873 | ||
7282d491 | 874 | static const struct ethtool_ops netdev_ethtool_ops = { |
1da177e4 LT |
875 | .get_drvinfo = netdev_get_drvinfo, |
876 | .get_settings = netdev_get_settings, | |
877 | .get_link = netdev_get_link, | |
5fc7e01c BK |
878 | .set_tx_csum = ibmveth_set_tx_csum, |
879 | .get_rx_csum = ibmveth_get_rx_csum, | |
880 | .set_rx_csum = ibmveth_set_rx_csum, | |
ddbb4de9 | 881 | .get_strings = ibmveth_get_strings, |
b9f2c044 | 882 | .get_sset_count = ibmveth_get_sset_count, |
ddbb4de9 | 883 | .get_ethtool_stats = ibmveth_get_ethtool_stats, |
1da177e4 LT |
884 | }; |
885 | ||
886 | static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
887 | { | |
888 | return -EOPNOTSUPP; | |
889 | } | |
890 | ||
891 | #define page_offset(v) ((unsigned long)(v) & ((1 << 12) - 1)) | |
892 | ||
61357325 SH |
893 | static netdev_tx_t ibmveth_start_xmit(struct sk_buff *skb, |
894 | struct net_device *netdev) | |
1da177e4 | 895 | { |
4cf1653a | 896 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
3449a2ab | 897 | union ibmveth_buf_desc desc; |
1da177e4 | 898 | unsigned long lpar_rc; |
1da177e4 | 899 | unsigned long correlator; |
60296d9e | 900 | unsigned long flags; |
1da177e4 | 901 | unsigned int retry_count; |
60296d9e SL |
902 | unsigned int tx_dropped = 0; |
903 | unsigned int tx_bytes = 0; | |
904 | unsigned int tx_packets = 0; | |
905 | unsigned int tx_send_failed = 0; | |
906 | unsigned int tx_map_failed = 0; | |
1096d63d RJ |
907 | int used_bounce = 0; |
908 | unsigned long data_dma_addr; | |
60296d9e | 909 | |
79ef4a4d | 910 | desc.fields.flags_len = IBMVETH_BUF_VALID | skb->len; |
1da177e4 | 911 | |
f4ff2872 BK |
912 | if (skb->ip_summed == CHECKSUM_PARTIAL && |
913 | ip_hdr(skb)->protocol != IPPROTO_TCP && skb_checksum_help(skb)) { | |
914 | ibmveth_error_printk("tx: failed to checksum packet\n"); | |
915 | tx_dropped++; | |
916 | goto out; | |
917 | } | |
918 | ||
919 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
920 | unsigned char *buf = skb_transport_header(skb) + skb->csum_offset; | |
921 | ||
79ef4a4d | 922 | desc.fields.flags_len |= (IBMVETH_BUF_NO_CSUM | IBMVETH_BUF_CSUM_GOOD); |
f4ff2872 BK |
923 | |
924 | /* Need to zero out the checksum */ | |
925 | buf[0] = 0; | |
926 | buf[1] = 0; | |
927 | } | |
928 | ||
45e15bb7 SL |
929 | data_dma_addr = dma_map_single(&adapter->vdev->dev, skb->data, |
930 | skb->len, DMA_TO_DEVICE); | |
c713e7cb | 931 | if (dma_mapping_error(&adapter->vdev->dev, data_dma_addr)) { |
1096d63d RJ |
932 | if (!firmware_has_feature(FW_FEATURE_CMO)) |
933 | ibmveth_error_printk("tx: unable to map xmit buffer\n"); | |
934 | skb_copy_from_linear_data(skb, adapter->bounce_buffer, | |
935 | skb->len); | |
936 | desc.fields.address = adapter->bounce_buffer_dma; | |
60296d9e | 937 | tx_map_failed++; |
1096d63d | 938 | used_bounce = 1; |
45e15bb7 | 939 | wmb(); |
1096d63d RJ |
940 | } else |
941 | desc.fields.address = data_dma_addr; | |
1da177e4 | 942 | |
1da177e4 LT |
943 | /* send the frame. Arbitrarily set retrycount to 1024 */ |
944 | correlator = 0; | |
945 | retry_count = 1024; | |
946 | do { | |
947 | lpar_rc = h_send_logical_lan(adapter->vdev->unit_address, | |
3449a2ab BK |
948 | desc.desc, 0, 0, 0, 0, 0, |
949 | correlator, &correlator); | |
706c8c93 | 950 | } while ((lpar_rc == H_BUSY) && (retry_count--)); |
d7fbeba6 | 951 | |
706c8c93 | 952 | if(lpar_rc != H_SUCCESS && lpar_rc != H_DROPPED) { |
1da177e4 | 953 | ibmveth_error_printk("tx: h_send_logical_lan failed with rc=%ld\n", lpar_rc); |
3449a2ab | 954 | ibmveth_error_printk("tx: valid=%d, len=%d, address=0x%08x\n", |
79ef4a4d BK |
955 | (desc.fields.flags_len & IBMVETH_BUF_VALID) ? 1 : 0, |
956 | skb->len, desc.fields.address); | |
60296d9e SL |
957 | tx_send_failed++; |
958 | tx_dropped++; | |
1da177e4 | 959 | } else { |
60296d9e SL |
960 | tx_packets++; |
961 | tx_bytes += skb->len; | |
1ae5dc34 | 962 | netdev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */ |
1da177e4 LT |
963 | } |
964 | ||
1096d63d RJ |
965 | if (!used_bounce) |
966 | dma_unmap_single(&adapter->vdev->dev, data_dma_addr, | |
967 | skb->len, DMA_TO_DEVICE); | |
1da177e4 | 968 | |
60296d9e | 969 | out: spin_lock_irqsave(&adapter->stats_lock, flags); |
09f75cd7 JG |
970 | netdev->stats.tx_dropped += tx_dropped; |
971 | netdev->stats.tx_bytes += tx_bytes; | |
972 | netdev->stats.tx_packets += tx_packets; | |
60296d9e SL |
973 | adapter->tx_send_failed += tx_send_failed; |
974 | adapter->tx_map_failed += tx_map_failed; | |
975 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
976 | ||
1da177e4 | 977 | dev_kfree_skb(skb); |
6ed10654 | 978 | return NETDEV_TX_OK; |
1da177e4 LT |
979 | } |
980 | ||
bea3348e | 981 | static int ibmveth_poll(struct napi_struct *napi, int budget) |
1da177e4 | 982 | { |
bea3348e SH |
983 | struct ibmveth_adapter *adapter = container_of(napi, struct ibmveth_adapter, napi); |
984 | struct net_device *netdev = adapter->netdev; | |
1da177e4 | 985 | int frames_processed = 0; |
1da177e4 LT |
986 | unsigned long lpar_rc; |
987 | ||
988 | restart_poll: | |
989 | do { | |
bea3348e | 990 | struct sk_buff *skb; |
1da177e4 | 991 | |
bea3348e SH |
992 | if (!ibmveth_rxq_pending_buffer(adapter)) |
993 | break; | |
1da177e4 | 994 | |
bea3348e SH |
995 | rmb(); |
996 | if (!ibmveth_rxq_buffer_valid(adapter)) { | |
997 | wmb(); /* suggested by larson1 */ | |
998 | adapter->rx_invalid_buffer++; | |
999 | ibmveth_debug_printk("recycling invalid buffer\n"); | |
1000 | ibmveth_rxq_recycle_buffer(adapter); | |
1001 | } else { | |
1002 | int length = ibmveth_rxq_frame_length(adapter); | |
1003 | int offset = ibmveth_rxq_frame_offset(adapter); | |
f4ff2872 BK |
1004 | int csum_good = ibmveth_rxq_csum_good(adapter); |
1005 | ||
bea3348e | 1006 | skb = ibmveth_rxq_get_buffer(adapter); |
f4ff2872 BK |
1007 | if (csum_good) |
1008 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1da177e4 | 1009 | |
bea3348e | 1010 | ibmveth_rxq_harvest_buffer(adapter); |
1da177e4 | 1011 | |
bea3348e SH |
1012 | skb_reserve(skb, offset); |
1013 | skb_put(skb, length); | |
1014 | skb->protocol = eth_type_trans(skb, netdev); | |
1da177e4 | 1015 | |
bea3348e | 1016 | netif_receive_skb(skb); /* send it up */ |
1da177e4 | 1017 | |
09f75cd7 JG |
1018 | netdev->stats.rx_packets++; |
1019 | netdev->stats.rx_bytes += length; | |
bea3348e | 1020 | frames_processed++; |
1da177e4 | 1021 | } |
bea3348e | 1022 | } while (frames_processed < budget); |
1da177e4 | 1023 | |
e2adbcb4 | 1024 | ibmveth_replenish_task(adapter); |
1da177e4 | 1025 | |
bea3348e SH |
1026 | if (frames_processed < budget) { |
1027 | /* We think we are done - reenable interrupts, | |
1028 | * then check once more to make sure we are done. | |
1029 | */ | |
1030 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, | |
1031 | VIO_IRQ_ENABLE); | |
1da177e4 | 1032 | |
bea3348e | 1033 | ibmveth_assert(lpar_rc == H_SUCCESS); |
1da177e4 | 1034 | |
288379f0 | 1035 | napi_complete(napi); |
1da177e4 | 1036 | |
bea3348e | 1037 | if (ibmveth_rxq_pending_buffer(adapter) && |
288379f0 | 1038 | napi_reschedule(napi)) { |
bea3348e SH |
1039 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, |
1040 | VIO_IRQ_DISABLE); | |
1041 | goto restart_poll; | |
1042 | } | |
1da177e4 LT |
1043 | } |
1044 | ||
bea3348e | 1045 | return frames_processed; |
1da177e4 LT |
1046 | } |
1047 | ||
7d12e780 | 1048 | static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance) |
d7fbeba6 | 1049 | { |
1da177e4 | 1050 | struct net_device *netdev = dev_instance; |
4cf1653a | 1051 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1052 | unsigned long lpar_rc; |
1053 | ||
288379f0 | 1054 | if (napi_schedule_prep(&adapter->napi)) { |
bea3348e SH |
1055 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, |
1056 | VIO_IRQ_DISABLE); | |
706c8c93 | 1057 | ibmveth_assert(lpar_rc == H_SUCCESS); |
288379f0 | 1058 | __napi_schedule(&adapter->napi); |
1da177e4 LT |
1059 | } |
1060 | return IRQ_HANDLED; | |
1061 | } | |
1062 | ||
1da177e4 LT |
1063 | static void ibmveth_set_multicast_list(struct net_device *netdev) |
1064 | { | |
4cf1653a | 1065 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1066 | unsigned long lpar_rc; |
1067 | ||
4cd24eaf JP |
1068 | if ((netdev->flags & IFF_PROMISC) || |
1069 | (netdev_mc_count(netdev) > adapter->mcastFilterSize)) { | |
1da177e4 LT |
1070 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, |
1071 | IbmVethMcastEnableRecv | | |
1072 | IbmVethMcastDisableFiltering, | |
1073 | 0); | |
706c8c93 | 1074 | if(lpar_rc != H_SUCCESS) { |
1da177e4 LT |
1075 | ibmveth_error_printk("h_multicast_ctrl rc=%ld when entering promisc mode\n", lpar_rc); |
1076 | } | |
1077 | } else { | |
22bedad3 | 1078 | struct netdev_hw_addr *ha; |
1da177e4 LT |
1079 | /* clear the filter table & disable filtering */ |
1080 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, | |
1081 | IbmVethMcastEnableRecv | | |
1082 | IbmVethMcastDisableFiltering | | |
1083 | IbmVethMcastClearFilterTable, | |
1084 | 0); | |
706c8c93 | 1085 | if(lpar_rc != H_SUCCESS) { |
1da177e4 LT |
1086 | ibmveth_error_printk("h_multicast_ctrl rc=%ld when attempting to clear filter table\n", lpar_rc); |
1087 | } | |
1088 | /* add the addresses to the filter table */ | |
22bedad3 | 1089 | netdev_for_each_mc_addr(ha, netdev) { |
1da177e4 LT |
1090 | // add the multicast address to the filter table |
1091 | unsigned long mcast_addr = 0; | |
22bedad3 | 1092 | memcpy(((char *)&mcast_addr)+2, ha->addr, 6); |
1da177e4 LT |
1093 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, |
1094 | IbmVethMcastAddFilter, | |
1095 | mcast_addr); | |
706c8c93 | 1096 | if(lpar_rc != H_SUCCESS) { |
1da177e4 LT |
1097 | ibmveth_error_printk("h_multicast_ctrl rc=%ld when adding an entry to the filter table\n", lpar_rc); |
1098 | } | |
1099 | } | |
d7fbeba6 | 1100 | |
1da177e4 LT |
1101 | /* re-enable filtering */ |
1102 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, | |
1103 | IbmVethMcastEnableFiltering, | |
1104 | 0); | |
706c8c93 | 1105 | if(lpar_rc != H_SUCCESS) { |
1da177e4 LT |
1106 | ibmveth_error_printk("h_multicast_ctrl rc=%ld when enabling filtering\n", lpar_rc); |
1107 | } | |
1108 | } | |
1109 | } | |
1110 | ||
1111 | static int ibmveth_change_mtu(struct net_device *dev, int new_mtu) | |
1112 | { | |
4cf1653a | 1113 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
1096d63d | 1114 | struct vio_dev *viodev = adapter->vdev; |
860f242e | 1115 | int new_mtu_oh = new_mtu + IBMVETH_BUFF_OH; |
1096d63d | 1116 | int i; |
b6d35182 | 1117 | |
860f242e | 1118 | if (new_mtu < IBMVETH_MAX_MTU) |
1da177e4 | 1119 | return -EINVAL; |
b6d35182 | 1120 | |
ce6eea58 BK |
1121 | for (i = 0; i < IbmVethNumBufferPools; i++) |
1122 | if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size) | |
1123 | break; | |
1124 | ||
1125 | if (i == IbmVethNumBufferPools) | |
1126 | return -EINVAL; | |
1127 | ||
ea866e65 SL |
1128 | /* Deactivate all the buffer pools so that the next loop can activate |
1129 | only the buffer pools necessary to hold the new MTU */ | |
1130 | for (i = 0; i < IbmVethNumBufferPools; i++) | |
1131 | if (adapter->rx_buff_pool[i].active) { | |
1132 | ibmveth_free_buffer_pool(adapter, | |
1133 | &adapter->rx_buff_pool[i]); | |
1134 | adapter->rx_buff_pool[i].active = 0; | |
1135 | } | |
1136 | ||
860f242e | 1137 | /* Look for an active buffer pool that can hold the new MTU */ |
b6d35182 | 1138 | for(i = 0; i<IbmVethNumBufferPools; i++) { |
ea866e65 | 1139 | adapter->rx_buff_pool[i].active = 1; |
ce6eea58 | 1140 | |
860f242e | 1141 | if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size) { |
ea866e65 | 1142 | if (netif_running(adapter->netdev)) { |
ce6eea58 BK |
1143 | adapter->pool_config = 1; |
1144 | ibmveth_close(adapter->netdev); | |
1145 | adapter->pool_config = 0; | |
1146 | dev->mtu = new_mtu; | |
1096d63d RJ |
1147 | vio_cmo_set_dev_desired(viodev, |
1148 | ibmveth_get_desired_dma | |
1149 | (viodev)); | |
1150 | return ibmveth_open(adapter->netdev); | |
1151 | } | |
1152 | dev->mtu = new_mtu; | |
1153 | vio_cmo_set_dev_desired(viodev, | |
1154 | ibmveth_get_desired_dma | |
1155 | (viodev)); | |
860f242e | 1156 | return 0; |
b6d35182 | 1157 | } |
b6d35182 | 1158 | } |
860f242e | 1159 | return -EINVAL; |
1da177e4 LT |
1160 | } |
1161 | ||
6b422374 SL |
1162 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1163 | static void ibmveth_poll_controller(struct net_device *dev) | |
1164 | { | |
4cf1653a | 1165 | ibmveth_replenish_task(netdev_priv(dev)); |
5f77113c | 1166 | ibmveth_interrupt(dev->irq, dev); |
6b422374 SL |
1167 | } |
1168 | #endif | |
1169 | ||
1096d63d RJ |
1170 | /** |
1171 | * ibmveth_get_desired_dma - Calculate IO memory desired by the driver | |
1172 | * | |
1173 | * @vdev: struct vio_dev for the device whose desired IO mem is to be returned | |
1174 | * | |
1175 | * Return value: | |
1176 | * Number of bytes of IO data the driver will need to perform well. | |
1177 | */ | |
1178 | static unsigned long ibmveth_get_desired_dma(struct vio_dev *vdev) | |
1179 | { | |
1180 | struct net_device *netdev = dev_get_drvdata(&vdev->dev); | |
1181 | struct ibmveth_adapter *adapter; | |
1182 | unsigned long ret; | |
1183 | int i; | |
1184 | int rxqentries = 1; | |
1185 | ||
1186 | /* netdev inits at probe time along with the structures we need below*/ | |
1187 | if (netdev == NULL) | |
1188 | return IOMMU_PAGE_ALIGN(IBMVETH_IO_ENTITLEMENT_DEFAULT); | |
1189 | ||
1190 | adapter = netdev_priv(netdev); | |
1191 | ||
1192 | ret = IBMVETH_BUFF_LIST_SIZE + IBMVETH_FILT_LIST_SIZE; | |
1193 | ret += IOMMU_PAGE_ALIGN(netdev->mtu); | |
1194 | ||
1195 | for (i = 0; i < IbmVethNumBufferPools; i++) { | |
1196 | /* add the size of the active receive buffers */ | |
1197 | if (adapter->rx_buff_pool[i].active) | |
1198 | ret += | |
1199 | adapter->rx_buff_pool[i].size * | |
1200 | IOMMU_PAGE_ALIGN(adapter->rx_buff_pool[i]. | |
1201 | buff_size); | |
1202 | rxqentries += adapter->rx_buff_pool[i].size; | |
1203 | } | |
1204 | /* add the size of the receive queue entries */ | |
1205 | ret += IOMMU_PAGE_ALIGN(rxqentries * sizeof(struct ibmveth_rx_q_entry)); | |
1206 | ||
1207 | return ret; | |
1208 | } | |
1209 | ||
e186d174 AB |
1210 | static const struct net_device_ops ibmveth_netdev_ops = { |
1211 | .ndo_open = ibmveth_open, | |
1212 | .ndo_stop = ibmveth_close, | |
1213 | .ndo_start_xmit = ibmveth_start_xmit, | |
1214 | .ndo_set_multicast_list = ibmveth_set_multicast_list, | |
1215 | .ndo_do_ioctl = ibmveth_ioctl, | |
1216 | .ndo_change_mtu = ibmveth_change_mtu, | |
1217 | .ndo_validate_addr = eth_validate_addr, | |
1218 | .ndo_set_mac_address = eth_mac_addr, | |
1219 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1220 | .ndo_poll_controller = ibmveth_poll_controller, | |
1221 | #endif | |
1222 | }; | |
1223 | ||
1da177e4 LT |
1224 | static int __devinit ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id) |
1225 | { | |
b6d35182 | 1226 | int rc, i; |
f4ff2872 | 1227 | long ret; |
1da177e4 | 1228 | struct net_device *netdev; |
9dc83afd | 1229 | struct ibmveth_adapter *adapter; |
ff5bfc35 | 1230 | unsigned long set_attr, ret_attr; |
1da177e4 LT |
1231 | |
1232 | unsigned char *mac_addr_p; | |
1233 | unsigned int *mcastFilterSize_p; | |
1234 | ||
1235 | ||
d7fbeba6 | 1236 | ibmveth_debug_printk_no_adapter("entering ibmveth_probe for UA 0x%x\n", |
1da177e4 LT |
1237 | dev->unit_address); |
1238 | ||
493a684a ME |
1239 | mac_addr_p = (unsigned char *) vio_get_attribute(dev, |
1240 | VETH_MAC_ADDR, NULL); | |
1da177e4 LT |
1241 | if(!mac_addr_p) { |
1242 | printk(KERN_ERR "(%s:%3.3d) ERROR: Can't find VETH_MAC_ADDR " | |
1243 | "attribute\n", __FILE__, __LINE__); | |
1244 | return 0; | |
1245 | } | |
d7fbeba6 | 1246 | |
493a684a ME |
1247 | mcastFilterSize_p = (unsigned int *) vio_get_attribute(dev, |
1248 | VETH_MCAST_FILTER_SIZE, NULL); | |
1da177e4 LT |
1249 | if(!mcastFilterSize_p) { |
1250 | printk(KERN_ERR "(%s:%3.3d) ERROR: Can't find " | |
1251 | "VETH_MCAST_FILTER_SIZE attribute\n", | |
1252 | __FILE__, __LINE__); | |
1253 | return 0; | |
1254 | } | |
d7fbeba6 | 1255 | |
1da177e4 LT |
1256 | netdev = alloc_etherdev(sizeof(struct ibmveth_adapter)); |
1257 | ||
1258 | if(!netdev) | |
1259 | return -ENOMEM; | |
1260 | ||
4cf1653a | 1261 | adapter = netdev_priv(netdev); |
c7ae011d | 1262 | dev_set_drvdata(&dev->dev, netdev); |
1da177e4 LT |
1263 | |
1264 | adapter->vdev = dev; | |
1265 | adapter->netdev = netdev; | |
1266 | adapter->mcastFilterSize= *mcastFilterSize_p; | |
860f242e | 1267 | adapter->pool_config = 0; |
d7fbeba6 | 1268 | |
bea3348e SH |
1269 | netif_napi_add(netdev, &adapter->napi, ibmveth_poll, 16); |
1270 | ||
1da177e4 | 1271 | /* Some older boxes running PHYP non-natively have an OF that |
d7fbeba6 | 1272 | returns a 8-byte local-mac-address field (and the first |
1da177e4 | 1273 | 2 bytes have to be ignored) while newer boxes' OF return |
d7fbeba6 | 1274 | a 6-byte field. Note that IEEE 1275 specifies that |
1da177e4 | 1275 | local-mac-address must be a 6-byte field. |
d7fbeba6 | 1276 | The RPA doc specifies that the first byte must be 10b, so |
1da177e4 LT |
1277 | we'll just look for it to solve this 8 vs. 6 byte field issue */ |
1278 | ||
1279 | if ((*mac_addr_p & 0x3) != 0x02) | |
1280 | mac_addr_p += 2; | |
1281 | ||
1282 | adapter->mac_addr = 0; | |
1283 | memcpy(&adapter->mac_addr, mac_addr_p, 6); | |
1284 | ||
1da177e4 | 1285 | netdev->irq = dev->irq; |
e186d174 AB |
1286 | netdev->netdev_ops = &ibmveth_netdev_ops; |
1287 | netdev->ethtool_ops = &netdev_ethtool_ops; | |
1da177e4 | 1288 | SET_NETDEV_DEV(netdev, &dev->dev); |
d7fbeba6 | 1289 | netdev->features |= NETIF_F_LLTX; |
60296d9e | 1290 | spin_lock_init(&adapter->stats_lock); |
1da177e4 | 1291 | |
d44b5e07 | 1292 | memcpy(netdev->dev_addr, &adapter->mac_addr, netdev->addr_len); |
1da177e4 | 1293 | |
860f242e SL |
1294 | for(i = 0; i<IbmVethNumBufferPools; i++) { |
1295 | struct kobject *kobj = &adapter->rx_buff_pool[i].kobj; | |
8dde2a96 GKH |
1296 | int error; |
1297 | ||
d7fbeba6 JG |
1298 | ibmveth_init_buffer_pool(&adapter->rx_buff_pool[i], i, |
1299 | pool_count[i], pool_size[i], | |
860f242e | 1300 | pool_active[i]); |
8dde2a96 GKH |
1301 | error = kobject_init_and_add(kobj, &ktype_veth_pool, |
1302 | &dev->dev.kobj, "pool%d", i); | |
1303 | if (!error) | |
1304 | kobject_uevent(kobj, KOBJ_ADD); | |
860f242e | 1305 | } |
1da177e4 LT |
1306 | |
1307 | ibmveth_debug_printk("adapter @ 0x%p\n", adapter); | |
1308 | ||
1da177e4 LT |
1309 | adapter->buffer_list_dma = DMA_ERROR_CODE; |
1310 | adapter->filter_list_dma = DMA_ERROR_CODE; | |
1311 | adapter->rx_queue.queue_dma = DMA_ERROR_CODE; | |
1312 | ||
1da177e4 LT |
1313 | ibmveth_debug_printk("registering netdev...\n"); |
1314 | ||
79ef4a4d | 1315 | ret = h_illan_attributes(dev->unit_address, 0, 0, &ret_attr); |
f4ff2872 | 1316 | |
79ef4a4d BK |
1317 | if (ret == H_SUCCESS && !(ret_attr & IBMVETH_ILLAN_ACTIVE_TRUNK) && |
1318 | !(ret_attr & IBMVETH_ILLAN_TRUNK_PRI_MASK) && | |
1319 | (ret_attr & IBMVETH_ILLAN_PADDED_PKT_CSUM)) { | |
1320 | set_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM; | |
f4ff2872 | 1321 | |
79ef4a4d | 1322 | ret = h_illan_attributes(dev->unit_address, 0, set_attr, &ret_attr); |
f4ff2872 | 1323 | |
5fc7e01c BK |
1324 | if (ret == H_SUCCESS) { |
1325 | adapter->rx_csum = 1; | |
f4ff2872 | 1326 | netdev->features |= NETIF_F_IP_CSUM; |
5fc7e01c | 1327 | } else |
79ef4a4d | 1328 | ret = h_illan_attributes(dev->unit_address, set_attr, 0, &ret_attr); |
f4ff2872 BK |
1329 | } |
1330 | ||
1da177e4 LT |
1331 | rc = register_netdev(netdev); |
1332 | ||
1333 | if(rc) { | |
1334 | ibmveth_debug_printk("failed to register netdev rc=%d\n", rc); | |
1335 | free_netdev(netdev); | |
1336 | return rc; | |
1337 | } | |
1338 | ||
1339 | ibmveth_debug_printk("registered\n"); | |
1340 | ||
1341 | ibmveth_proc_register_adapter(adapter); | |
1342 | ||
1343 | return 0; | |
1344 | } | |
1345 | ||
1346 | static int __devexit ibmveth_remove(struct vio_dev *dev) | |
1347 | { | |
c7ae011d | 1348 | struct net_device *netdev = dev_get_drvdata(&dev->dev); |
4cf1653a | 1349 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
860f242e SL |
1350 | int i; |
1351 | ||
1352 | for(i = 0; i<IbmVethNumBufferPools; i++) | |
c10997f6 | 1353 | kobject_put(&adapter->rx_buff_pool[i].kobj); |
1da177e4 LT |
1354 | |
1355 | unregister_netdev(netdev); | |
1356 | ||
1357 | ibmveth_proc_unregister_adapter(adapter); | |
1358 | ||
1359 | free_netdev(netdev); | |
1096d63d RJ |
1360 | dev_set_drvdata(&dev->dev, NULL); |
1361 | ||
1da177e4 LT |
1362 | return 0; |
1363 | } | |
1364 | ||
1365 | #ifdef CONFIG_PROC_FS | |
1366 | static void ibmveth_proc_register_driver(void) | |
1367 | { | |
457c4cbc | 1368 | ibmveth_proc_dir = proc_mkdir(IBMVETH_PROC_DIR, init_net.proc_net); |
1da177e4 | 1369 | if (ibmveth_proc_dir) { |
1da177e4 LT |
1370 | } |
1371 | } | |
1372 | ||
1373 | static void ibmveth_proc_unregister_driver(void) | |
1374 | { | |
457c4cbc | 1375 | remove_proc_entry(IBMVETH_PROC_DIR, init_net.proc_net); |
1da177e4 LT |
1376 | } |
1377 | ||
1119d577 | 1378 | static int ibmveth_show(struct seq_file *seq, void *v) |
1da177e4 LT |
1379 | { |
1380 | struct ibmveth_adapter *adapter = seq->private; | |
3a6d54c5 JP |
1381 | char *current_mac = (char *) adapter->netdev->dev_addr; |
1382 | char *firmware_mac = (char *) &adapter->mac_addr; | |
1da177e4 LT |
1383 | |
1384 | seq_printf(seq, "%s %s\n\n", ibmveth_driver_string, ibmveth_driver_version); | |
d7fbeba6 | 1385 | |
1da177e4 | 1386 | seq_printf(seq, "Unit Address: 0x%x\n", adapter->vdev->unit_address); |
e174961c JB |
1387 | seq_printf(seq, "Current MAC: %pM\n", current_mac); |
1388 | seq_printf(seq, "Firmware MAC: %pM\n", firmware_mac); | |
d7fbeba6 | 1389 | |
1da177e4 | 1390 | seq_printf(seq, "\nAdapter Statistics:\n"); |
a1c5a893 SR |
1391 | seq_printf(seq, " TX: vio_map_single failres: %lld\n", adapter->tx_map_failed); |
1392 | seq_printf(seq, " send failures: %lld\n", adapter->tx_send_failed); | |
1393 | seq_printf(seq, " RX: replenish task cycles: %lld\n", adapter->replenish_task_cycles); | |
1394 | seq_printf(seq, " alloc_skb_failures: %lld\n", adapter->replenish_no_mem); | |
1395 | seq_printf(seq, " add buffer failures: %lld\n", adapter->replenish_add_buff_failure); | |
1396 | seq_printf(seq, " invalid buffers: %lld\n", adapter->rx_invalid_buffer); | |
1397 | seq_printf(seq, " no buffers: %lld\n", adapter->rx_no_buffer); | |
d7fbeba6 | 1398 | |
1da177e4 LT |
1399 | return 0; |
1400 | } | |
1da177e4 LT |
1401 | |
1402 | static int ibmveth_proc_open(struct inode *inode, struct file *file) | |
1403 | { | |
1119d577 | 1404 | return single_open(file, ibmveth_show, PDE(inode)->data); |
1da177e4 LT |
1405 | } |
1406 | ||
d54b1fdb | 1407 | static const struct file_operations ibmveth_proc_fops = { |
1da177e4 LT |
1408 | .owner = THIS_MODULE, |
1409 | .open = ibmveth_proc_open, | |
1410 | .read = seq_read, | |
1411 | .llseek = seq_lseek, | |
1119d577 | 1412 | .release = single_release, |
1da177e4 LT |
1413 | }; |
1414 | ||
1415 | static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter) | |
1416 | { | |
1417 | struct proc_dir_entry *entry; | |
1418 | if (ibmveth_proc_dir) { | |
03a85d09 SL |
1419 | char u_addr[10]; |
1420 | sprintf(u_addr, "%x", adapter->vdev->unit_address); | |
a95609cb DL |
1421 | entry = proc_create_data(u_addr, S_IFREG, ibmveth_proc_dir, |
1422 | &ibmveth_proc_fops, adapter); | |
1423 | if (!entry) | |
1da177e4 | 1424 | ibmveth_error_printk("Cannot create adapter proc entry"); |
1da177e4 | 1425 | } |
1da177e4 LT |
1426 | } |
1427 | ||
1428 | static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter) | |
1429 | { | |
1430 | if (ibmveth_proc_dir) { | |
03a85d09 SL |
1431 | char u_addr[10]; |
1432 | sprintf(u_addr, "%x", adapter->vdev->unit_address); | |
1433 | remove_proc_entry(u_addr, ibmveth_proc_dir); | |
1da177e4 LT |
1434 | } |
1435 | } | |
1436 | ||
1437 | #else /* CONFIG_PROC_FS */ | |
d7fbeba6 | 1438 | static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter) |
1da177e4 LT |
1439 | { |
1440 | } | |
1441 | ||
d7fbeba6 | 1442 | static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter) |
1da177e4 LT |
1443 | { |
1444 | } | |
1445 | static void ibmveth_proc_register_driver(void) | |
1446 | { | |
1447 | } | |
1448 | ||
1449 | static void ibmveth_proc_unregister_driver(void) | |
1450 | { | |
1451 | } | |
1452 | #endif /* CONFIG_PROC_FS */ | |
1453 | ||
860f242e SL |
1454 | static struct attribute veth_active_attr; |
1455 | static struct attribute veth_num_attr; | |
1456 | static struct attribute veth_size_attr; | |
1457 | ||
1458 | static ssize_t veth_pool_show(struct kobject * kobj, | |
1459 | struct attribute * attr, char * buf) | |
1460 | { | |
d7fbeba6 | 1461 | struct ibmveth_buff_pool *pool = container_of(kobj, |
860f242e SL |
1462 | struct ibmveth_buff_pool, |
1463 | kobj); | |
1464 | ||
1465 | if (attr == &veth_active_attr) | |
1466 | return sprintf(buf, "%d\n", pool->active); | |
1467 | else if (attr == &veth_num_attr) | |
1468 | return sprintf(buf, "%d\n", pool->size); | |
1469 | else if (attr == &veth_size_attr) | |
1470 | return sprintf(buf, "%d\n", pool->buff_size); | |
1471 | return 0; | |
1472 | } | |
1473 | ||
1474 | static ssize_t veth_pool_store(struct kobject * kobj, struct attribute * attr, | |
1475 | const char * buf, size_t count) | |
1476 | { | |
d7fbeba6 | 1477 | struct ibmveth_buff_pool *pool = container_of(kobj, |
860f242e SL |
1478 | struct ibmveth_buff_pool, |
1479 | kobj); | |
c7ae011d GKH |
1480 | struct net_device *netdev = dev_get_drvdata( |
1481 | container_of(kobj->parent, struct device, kobj)); | |
4cf1653a | 1482 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
860f242e SL |
1483 | long value = simple_strtol(buf, NULL, 10); |
1484 | long rc; | |
1485 | ||
1486 | if (attr == &veth_active_attr) { | |
1487 | if (value && !pool->active) { | |
4aa9c93e BK |
1488 | if (netif_running(netdev)) { |
1489 | if(ibmveth_alloc_buffer_pool(pool)) { | |
1490 | ibmveth_error_printk("unable to alloc pool\n"); | |
1491 | return -ENOMEM; | |
1492 | } | |
1493 | pool->active = 1; | |
1494 | adapter->pool_config = 1; | |
1495 | ibmveth_close(netdev); | |
1496 | adapter->pool_config = 0; | |
1497 | if ((rc = ibmveth_open(netdev))) | |
1498 | return rc; | |
1499 | } else | |
1500 | pool->active = 1; | |
860f242e SL |
1501 | } else if (!value && pool->active) { |
1502 | int mtu = netdev->mtu + IBMVETH_BUFF_OH; | |
1503 | int i; | |
1504 | /* Make sure there is a buffer pool with buffers that | |
1505 | can hold a packet of the size of the MTU */ | |
76b9cfcc | 1506 | for (i = 0; i < IbmVethNumBufferPools; i++) { |
860f242e SL |
1507 | if (pool == &adapter->rx_buff_pool[i]) |
1508 | continue; | |
1509 | if (!adapter->rx_buff_pool[i].active) | |
1510 | continue; | |
76b9cfcc BK |
1511 | if (mtu <= adapter->rx_buff_pool[i].buff_size) |
1512 | break; | |
860f242e | 1513 | } |
76b9cfcc BK |
1514 | |
1515 | if (i == IbmVethNumBufferPools) { | |
860f242e SL |
1516 | ibmveth_error_printk("no active pool >= MTU\n"); |
1517 | return -EPERM; | |
1518 | } | |
76b9cfcc | 1519 | |
76b9cfcc BK |
1520 | if (netif_running(netdev)) { |
1521 | adapter->pool_config = 1; | |
1522 | ibmveth_close(netdev); | |
ea866e65 | 1523 | pool->active = 0; |
76b9cfcc BK |
1524 | adapter->pool_config = 0; |
1525 | if ((rc = ibmveth_open(netdev))) | |
1526 | return rc; | |
1527 | } | |
ea866e65 | 1528 | pool->active = 0; |
860f242e SL |
1529 | } |
1530 | } else if (attr == &veth_num_attr) { | |
1531 | if (value <= 0 || value > IBMVETH_MAX_POOL_COUNT) | |
1532 | return -EINVAL; | |
1533 | else { | |
4aa9c93e BK |
1534 | if (netif_running(netdev)) { |
1535 | adapter->pool_config = 1; | |
1536 | ibmveth_close(netdev); | |
1537 | adapter->pool_config = 0; | |
1538 | pool->size = value; | |
1539 | if ((rc = ibmveth_open(netdev))) | |
1540 | return rc; | |
1541 | } else | |
1542 | pool->size = value; | |
860f242e SL |
1543 | } |
1544 | } else if (attr == &veth_size_attr) { | |
1545 | if (value <= IBMVETH_BUFF_OH || value > IBMVETH_MAX_BUF_SIZE) | |
1546 | return -EINVAL; | |
1547 | else { | |
4aa9c93e BK |
1548 | if (netif_running(netdev)) { |
1549 | adapter->pool_config = 1; | |
1550 | ibmveth_close(netdev); | |
1551 | adapter->pool_config = 0; | |
1552 | pool->buff_size = value; | |
1553 | if ((rc = ibmveth_open(netdev))) | |
1554 | return rc; | |
1555 | } else | |
1556 | pool->buff_size = value; | |
860f242e SL |
1557 | } |
1558 | } | |
1559 | ||
1560 | /* kick the interrupt handler to allocate/deallocate pools */ | |
7d12e780 | 1561 | ibmveth_interrupt(netdev->irq, netdev); |
860f242e SL |
1562 | return count; |
1563 | } | |
1564 | ||
1565 | ||
1566 | #define ATTR(_name, _mode) \ | |
1567 | struct attribute veth_##_name##_attr = { \ | |
7b595756 | 1568 | .name = __stringify(_name), .mode = _mode, \ |
860f242e SL |
1569 | }; |
1570 | ||
1571 | static ATTR(active, 0644); | |
1572 | static ATTR(num, 0644); | |
1573 | static ATTR(size, 0644); | |
1574 | ||
1575 | static struct attribute * veth_pool_attrs[] = { | |
1576 | &veth_active_attr, | |
1577 | &veth_num_attr, | |
1578 | &veth_size_attr, | |
1579 | NULL, | |
1580 | }; | |
1581 | ||
52cf25d0 | 1582 | static const struct sysfs_ops veth_pool_ops = { |
860f242e SL |
1583 | .show = veth_pool_show, |
1584 | .store = veth_pool_store, | |
1585 | }; | |
1586 | ||
1587 | static struct kobj_type ktype_veth_pool = { | |
1588 | .release = NULL, | |
1589 | .sysfs_ops = &veth_pool_ops, | |
1590 | .default_attrs = veth_pool_attrs, | |
1591 | }; | |
1592 | ||
e7a3af5d BK |
1593 | static int ibmveth_resume(struct device *dev) |
1594 | { | |
1595 | struct net_device *netdev = dev_get_drvdata(dev); | |
1596 | ibmveth_interrupt(netdev->irq, netdev); | |
1597 | return 0; | |
1598 | } | |
860f242e | 1599 | |
1da177e4 LT |
1600 | static struct vio_device_id ibmveth_device_table[] __devinitdata= { |
1601 | { "network", "IBM,l-lan"}, | |
fb120da6 | 1602 | { "", "" } |
1da177e4 | 1603 | }; |
1da177e4 LT |
1604 | MODULE_DEVICE_TABLE(vio, ibmveth_device_table); |
1605 | ||
e7a3af5d BK |
1606 | static struct dev_pm_ops ibmveth_pm_ops = { |
1607 | .resume = ibmveth_resume | |
1608 | }; | |
1609 | ||
1da177e4 | 1610 | static struct vio_driver ibmveth_driver = { |
6fdf5392 SR |
1611 | .id_table = ibmveth_device_table, |
1612 | .probe = ibmveth_probe, | |
1613 | .remove = ibmveth_remove, | |
1096d63d | 1614 | .get_desired_dma = ibmveth_get_desired_dma, |
6fdf5392 SR |
1615 | .driver = { |
1616 | .name = ibmveth_driver_name, | |
915124d8 | 1617 | .owner = THIS_MODULE, |
e7a3af5d | 1618 | .pm = &ibmveth_pm_ops, |
6fdf5392 | 1619 | } |
1da177e4 LT |
1620 | }; |
1621 | ||
1622 | static int __init ibmveth_module_init(void) | |
1623 | { | |
1624 | ibmveth_printk("%s: %s %s\n", ibmveth_driver_name, ibmveth_driver_string, ibmveth_driver_version); | |
1625 | ||
1626 | ibmveth_proc_register_driver(); | |
1627 | ||
1628 | return vio_register_driver(&ibmveth_driver); | |
1629 | } | |
1630 | ||
1631 | static void __exit ibmveth_module_exit(void) | |
1632 | { | |
1633 | vio_unregister_driver(&ibmveth_driver); | |
1634 | ibmveth_proc_unregister_driver(); | |
d7fbeba6 | 1635 | } |
1da177e4 LT |
1636 | |
1637 | module_init(ibmveth_module_init); | |
1638 | module_exit(ibmveth_module_exit); |