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 | ||
c08cc3cc SL |
120 | static unsigned int tx_copybreak __read_mostly = 128; |
121 | module_param(tx_copybreak, uint, 0644); | |
122 | MODULE_PARM_DESC(tx_copybreak, | |
123 | "Maximum size of packet that is copied to a new buffer on transmit"); | |
124 | ||
ddbb4de9 BK |
125 | struct ibmveth_stat { |
126 | char name[ETH_GSTRING_LEN]; | |
127 | int offset; | |
128 | }; | |
129 | ||
130 | #define IBMVETH_STAT_OFF(stat) offsetof(struct ibmveth_adapter, stat) | |
131 | #define IBMVETH_GET_STAT(a, off) *((u64 *)(((unsigned long)(a)) + off)) | |
132 | ||
133 | struct ibmveth_stat ibmveth_stats[] = { | |
134 | { "replenish_task_cycles", IBMVETH_STAT_OFF(replenish_task_cycles) }, | |
135 | { "replenish_no_mem", IBMVETH_STAT_OFF(replenish_no_mem) }, | |
136 | { "replenish_add_buff_failure", IBMVETH_STAT_OFF(replenish_add_buff_failure) }, | |
137 | { "replenish_add_buff_success", IBMVETH_STAT_OFF(replenish_add_buff_success) }, | |
138 | { "rx_invalid_buffer", IBMVETH_STAT_OFF(rx_invalid_buffer) }, | |
139 | { "rx_no_buffer", IBMVETH_STAT_OFF(rx_no_buffer) }, | |
ddbb4de9 BK |
140 | { "tx_map_failed", IBMVETH_STAT_OFF(tx_map_failed) }, |
141 | { "tx_send_failed", IBMVETH_STAT_OFF(tx_send_failed) }, | |
142 | }; | |
143 | ||
1da177e4 | 144 | /* simple methods of getting data from the current rxq entry */ |
79ef4a4d BK |
145 | static inline u32 ibmveth_rxq_flags(struct ibmveth_adapter *adapter) |
146 | { | |
147 | return adapter->rx_queue.queue_addr[adapter->rx_queue.index].flags_off; | |
148 | } | |
149 | ||
150 | static inline int ibmveth_rxq_toggle(struct ibmveth_adapter *adapter) | |
151 | { | |
152 | return (ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_TOGGLE) >> IBMVETH_RXQ_TOGGLE_SHIFT; | |
153 | } | |
154 | ||
1da177e4 LT |
155 | static inline int ibmveth_rxq_pending_buffer(struct ibmveth_adapter *adapter) |
156 | { | |
79ef4a4d | 157 | return (ibmveth_rxq_toggle(adapter) == adapter->rx_queue.toggle); |
1da177e4 LT |
158 | } |
159 | ||
160 | static inline int ibmveth_rxq_buffer_valid(struct ibmveth_adapter *adapter) | |
161 | { | |
79ef4a4d | 162 | return (ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_VALID); |
1da177e4 LT |
163 | } |
164 | ||
165 | static inline int ibmveth_rxq_frame_offset(struct ibmveth_adapter *adapter) | |
166 | { | |
79ef4a4d | 167 | return (ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_OFF_MASK); |
1da177e4 LT |
168 | } |
169 | ||
170 | static inline int ibmveth_rxq_frame_length(struct ibmveth_adapter *adapter) | |
171 | { | |
172 | return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].length); | |
173 | } | |
174 | ||
f4ff2872 BK |
175 | static inline int ibmveth_rxq_csum_good(struct ibmveth_adapter *adapter) |
176 | { | |
79ef4a4d | 177 | return (ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_CSUM_GOOD); |
f4ff2872 BK |
178 | } |
179 | ||
1da177e4 | 180 | /* setup the initial settings for a buffer pool */ |
860f242e | 181 | 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 |
182 | { |
183 | pool->size = pool_size; | |
184 | pool->index = pool_index; | |
185 | pool->buff_size = buff_size; | |
c033a6d1 | 186 | pool->threshold = pool_size * 7 / 8; |
860f242e | 187 | pool->active = pool_active; |
1da177e4 LT |
188 | } |
189 | ||
190 | /* allocate and setup an buffer pool - called during open */ | |
191 | static int ibmveth_alloc_buffer_pool(struct ibmveth_buff_pool *pool) | |
192 | { | |
193 | int i; | |
194 | ||
d7fbeba6 | 195 | pool->free_map = kmalloc(sizeof(u16) * pool->size, GFP_KERNEL); |
1da177e4 LT |
196 | |
197 | if(!pool->free_map) { | |
198 | return -1; | |
199 | } | |
200 | ||
d7fbeba6 | 201 | pool->dma_addr = kmalloc(sizeof(dma_addr_t) * pool->size, GFP_KERNEL); |
1da177e4 LT |
202 | if(!pool->dma_addr) { |
203 | kfree(pool->free_map); | |
204 | pool->free_map = NULL; | |
205 | return -1; | |
206 | } | |
207 | ||
a05abcb5 | 208 | pool->skbuff = kcalloc(pool->size, sizeof(void *), GFP_KERNEL); |
1da177e4 LT |
209 | |
210 | if(!pool->skbuff) { | |
211 | kfree(pool->dma_addr); | |
212 | pool->dma_addr = NULL; | |
213 | ||
214 | kfree(pool->free_map); | |
215 | pool->free_map = NULL; | |
216 | return -1; | |
217 | } | |
218 | ||
1da177e4 LT |
219 | memset(pool->dma_addr, 0, sizeof(dma_addr_t) * pool->size); |
220 | ||
221 | for(i = 0; i < pool->size; ++i) { | |
222 | pool->free_map[i] = i; | |
223 | } | |
224 | ||
225 | atomic_set(&pool->available, 0); | |
226 | pool->producer_index = 0; | |
227 | pool->consumer_index = 0; | |
228 | ||
229 | return 0; | |
230 | } | |
231 | ||
232 | /* replenish the buffers for a pool. note that we don't need to | |
233 | * skb_reserve these since they are used for incoming... | |
234 | */ | |
235 | static void ibmveth_replenish_buffer_pool(struct ibmveth_adapter *adapter, struct ibmveth_buff_pool *pool) | |
236 | { | |
237 | u32 i; | |
238 | u32 count = pool->size - atomic_read(&pool->available); | |
239 | u32 buffers_added = 0; | |
1096d63d RJ |
240 | struct sk_buff *skb; |
241 | unsigned int free_index, index; | |
242 | u64 correlator; | |
243 | unsigned long lpar_rc; | |
244 | dma_addr_t dma_addr; | |
1da177e4 LT |
245 | |
246 | mb(); | |
247 | ||
248 | for(i = 0; i < count; ++i) { | |
1da177e4 | 249 | union ibmveth_buf_desc desc; |
1da177e4 LT |
250 | |
251 | skb = alloc_skb(pool->buff_size, GFP_ATOMIC); | |
252 | ||
253 | if(!skb) { | |
254 | ibmveth_debug_printk("replenish: unable to allocate skb\n"); | |
255 | adapter->replenish_no_mem++; | |
256 | break; | |
257 | } | |
258 | ||
047a66d4 | 259 | free_index = pool->consumer_index; |
a613f581 SL |
260 | pool->consumer_index++; |
261 | if (pool->consumer_index >= pool->size) | |
262 | pool->consumer_index = 0; | |
1da177e4 | 263 | index = pool->free_map[free_index]; |
d7fbeba6 | 264 | |
1da177e4 LT |
265 | ibmveth_assert(index != IBM_VETH_INVALID_MAP); |
266 | ibmveth_assert(pool->skbuff[index] == NULL); | |
267 | ||
268 | dma_addr = dma_map_single(&adapter->vdev->dev, skb->data, | |
269 | pool->buff_size, DMA_FROM_DEVICE); | |
270 | ||
c713e7cb | 271 | if (dma_mapping_error(&adapter->vdev->dev, dma_addr)) |
1096d63d RJ |
272 | goto failure; |
273 | ||
1da177e4 LT |
274 | pool->free_map[free_index] = IBM_VETH_INVALID_MAP; |
275 | pool->dma_addr[index] = dma_addr; | |
276 | pool->skbuff[index] = skb; | |
277 | ||
278 | correlator = ((u64)pool->index << 32) | index; | |
279 | *(u64*)skb->data = correlator; | |
280 | ||
79ef4a4d | 281 | desc.fields.flags_len = IBMVETH_BUF_VALID | pool->buff_size; |
d7fbeba6 | 282 | desc.fields.address = dma_addr; |
1da177e4 LT |
283 | |
284 | lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc); | |
d7fbeba6 | 285 | |
1096d63d RJ |
286 | if (lpar_rc != H_SUCCESS) |
287 | goto failure; | |
288 | else { | |
1da177e4 LT |
289 | buffers_added++; |
290 | adapter->replenish_add_buff_success++; | |
291 | } | |
292 | } | |
d7fbeba6 | 293 | |
1096d63d RJ |
294 | mb(); |
295 | atomic_add(buffers_added, &(pool->available)); | |
296 | return; | |
297 | ||
298 | failure: | |
299 | pool->free_map[free_index] = index; | |
300 | pool->skbuff[index] = NULL; | |
301 | if (pool->consumer_index == 0) | |
302 | pool->consumer_index = pool->size - 1; | |
303 | else | |
304 | pool->consumer_index--; | |
c713e7cb | 305 | if (!dma_mapping_error(&adapter->vdev->dev, dma_addr)) |
1096d63d RJ |
306 | dma_unmap_single(&adapter->vdev->dev, |
307 | pool->dma_addr[index], pool->buff_size, | |
308 | DMA_FROM_DEVICE); | |
309 | dev_kfree_skb_any(skb); | |
310 | adapter->replenish_add_buff_failure++; | |
311 | ||
1da177e4 LT |
312 | mb(); |
313 | atomic_add(buffers_added, &(pool->available)); | |
314 | } | |
315 | ||
e2adbcb4 | 316 | /* replenish routine */ |
d7fbeba6 | 317 | static void ibmveth_replenish_task(struct ibmveth_adapter *adapter) |
1da177e4 | 318 | { |
b6d35182 SL |
319 | int i; |
320 | ||
1da177e4 LT |
321 | adapter->replenish_task_cycles++; |
322 | ||
c033a6d1 SL |
323 | for (i = (IbmVethNumBufferPools - 1); i >= 0; i--) { |
324 | struct ibmveth_buff_pool *pool = &adapter->rx_buff_pool[i]; | |
325 | ||
326 | if (pool->active && | |
327 | (atomic_read(&pool->available) < pool->threshold)) | |
328 | ibmveth_replenish_buffer_pool(adapter, pool); | |
329 | } | |
1da177e4 LT |
330 | |
331 | adapter->rx_no_buffer = *(u64*)(((char*)adapter->buffer_list_addr) + 4096 - 8); | |
1da177e4 LT |
332 | } |
333 | ||
334 | /* empty and free ana buffer pool - also used to do cleanup in error paths */ | |
335 | static void ibmveth_free_buffer_pool(struct ibmveth_adapter *adapter, struct ibmveth_buff_pool *pool) | |
336 | { | |
337 | int i; | |
338 | ||
b4558ea9 JJ |
339 | kfree(pool->free_map); |
340 | pool->free_map = NULL; | |
1da177e4 LT |
341 | |
342 | if(pool->skbuff && pool->dma_addr) { | |
343 | for(i = 0; i < pool->size; ++i) { | |
344 | struct sk_buff *skb = pool->skbuff[i]; | |
345 | if(skb) { | |
346 | dma_unmap_single(&adapter->vdev->dev, | |
347 | pool->dma_addr[i], | |
348 | pool->buff_size, | |
349 | DMA_FROM_DEVICE); | |
350 | dev_kfree_skb_any(skb); | |
351 | pool->skbuff[i] = NULL; | |
352 | } | |
353 | } | |
354 | } | |
355 | ||
356 | if(pool->dma_addr) { | |
357 | kfree(pool->dma_addr); | |
358 | pool->dma_addr = NULL; | |
359 | } | |
360 | ||
361 | if(pool->skbuff) { | |
362 | kfree(pool->skbuff); | |
363 | pool->skbuff = NULL; | |
364 | } | |
365 | } | |
366 | ||
367 | /* remove a buffer from a pool */ | |
368 | static void ibmveth_remove_buffer_from_pool(struct ibmveth_adapter *adapter, u64 correlator) | |
369 | { | |
370 | unsigned int pool = correlator >> 32; | |
371 | unsigned int index = correlator & 0xffffffffUL; | |
372 | unsigned int free_index; | |
373 | struct sk_buff *skb; | |
374 | ||
375 | ibmveth_assert(pool < IbmVethNumBufferPools); | |
376 | ibmveth_assert(index < adapter->rx_buff_pool[pool].size); | |
377 | ||
378 | skb = adapter->rx_buff_pool[pool].skbuff[index]; | |
379 | ||
380 | ibmveth_assert(skb != NULL); | |
381 | ||
382 | adapter->rx_buff_pool[pool].skbuff[index] = NULL; | |
383 | ||
384 | dma_unmap_single(&adapter->vdev->dev, | |
385 | adapter->rx_buff_pool[pool].dma_addr[index], | |
386 | adapter->rx_buff_pool[pool].buff_size, | |
387 | DMA_FROM_DEVICE); | |
388 | ||
047a66d4 | 389 | free_index = adapter->rx_buff_pool[pool].producer_index; |
a613f581 SL |
390 | adapter->rx_buff_pool[pool].producer_index++; |
391 | if (adapter->rx_buff_pool[pool].producer_index >= | |
392 | adapter->rx_buff_pool[pool].size) | |
393 | adapter->rx_buff_pool[pool].producer_index = 0; | |
1da177e4 LT |
394 | adapter->rx_buff_pool[pool].free_map[free_index] = index; |
395 | ||
396 | mb(); | |
397 | ||
398 | atomic_dec(&(adapter->rx_buff_pool[pool].available)); | |
399 | } | |
400 | ||
401 | /* get the current buffer on the rx queue */ | |
402 | static inline struct sk_buff *ibmveth_rxq_get_buffer(struct ibmveth_adapter *adapter) | |
403 | { | |
404 | u64 correlator = adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator; | |
405 | unsigned int pool = correlator >> 32; | |
406 | unsigned int index = correlator & 0xffffffffUL; | |
407 | ||
408 | ibmveth_assert(pool < IbmVethNumBufferPools); | |
409 | ibmveth_assert(index < adapter->rx_buff_pool[pool].size); | |
410 | ||
411 | return adapter->rx_buff_pool[pool].skbuff[index]; | |
412 | } | |
413 | ||
414 | /* recycle the current buffer on the rx queue */ | |
415 | static void ibmveth_rxq_recycle_buffer(struct ibmveth_adapter *adapter) | |
416 | { | |
417 | u32 q_index = adapter->rx_queue.index; | |
418 | u64 correlator = adapter->rx_queue.queue_addr[q_index].correlator; | |
419 | unsigned int pool = correlator >> 32; | |
420 | unsigned int index = correlator & 0xffffffffUL; | |
421 | union ibmveth_buf_desc desc; | |
422 | unsigned long lpar_rc; | |
423 | ||
424 | ibmveth_assert(pool < IbmVethNumBufferPools); | |
425 | ibmveth_assert(index < adapter->rx_buff_pool[pool].size); | |
426 | ||
b6d35182 SL |
427 | if(!adapter->rx_buff_pool[pool].active) { |
428 | ibmveth_rxq_harvest_buffer(adapter); | |
429 | ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[pool]); | |
430 | return; | |
431 | } | |
432 | ||
79ef4a4d BK |
433 | desc.fields.flags_len = IBMVETH_BUF_VALID | |
434 | adapter->rx_buff_pool[pool].buff_size; | |
1da177e4 LT |
435 | desc.fields.address = adapter->rx_buff_pool[pool].dma_addr[index]; |
436 | ||
437 | lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc); | |
d7fbeba6 | 438 | |
706c8c93 | 439 | if(lpar_rc != H_SUCCESS) { |
1da177e4 LT |
440 | ibmveth_debug_printk("h_add_logical_lan_buffer failed during recycle rc=%ld", lpar_rc); |
441 | ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator); | |
442 | } | |
443 | ||
444 | if(++adapter->rx_queue.index == adapter->rx_queue.num_slots) { | |
445 | adapter->rx_queue.index = 0; | |
446 | adapter->rx_queue.toggle = !adapter->rx_queue.toggle; | |
447 | } | |
448 | } | |
449 | ||
493a684a | 450 | static void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter) |
1da177e4 LT |
451 | { |
452 | ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator); | |
453 | ||
454 | if(++adapter->rx_queue.index == adapter->rx_queue.num_slots) { | |
455 | adapter->rx_queue.index = 0; | |
456 | adapter->rx_queue.toggle = !adapter->rx_queue.toggle; | |
457 | } | |
458 | } | |
459 | ||
460 | static void ibmveth_cleanup(struct ibmveth_adapter *adapter) | |
461 | { | |
b6d35182 | 462 | int i; |
8d8bb39b | 463 | struct device *dev = &adapter->vdev->dev; |
b6d35182 | 464 | |
1da177e4 | 465 | if(adapter->buffer_list_addr != NULL) { |
8d8bb39b FT |
466 | if (!dma_mapping_error(dev, adapter->buffer_list_dma)) { |
467 | dma_unmap_single(dev, adapter->buffer_list_dma, 4096, | |
1da177e4 LT |
468 | DMA_BIDIRECTIONAL); |
469 | adapter->buffer_list_dma = DMA_ERROR_CODE; | |
470 | } | |
471 | free_page((unsigned long)adapter->buffer_list_addr); | |
472 | adapter->buffer_list_addr = NULL; | |
d7fbeba6 | 473 | } |
1da177e4 LT |
474 | |
475 | if(adapter->filter_list_addr != NULL) { | |
8d8bb39b FT |
476 | if (!dma_mapping_error(dev, adapter->filter_list_dma)) { |
477 | dma_unmap_single(dev, adapter->filter_list_dma, 4096, | |
1da177e4 LT |
478 | DMA_BIDIRECTIONAL); |
479 | adapter->filter_list_dma = DMA_ERROR_CODE; | |
480 | } | |
481 | free_page((unsigned long)adapter->filter_list_addr); | |
482 | adapter->filter_list_addr = NULL; | |
483 | } | |
484 | ||
485 | if(adapter->rx_queue.queue_addr != NULL) { | |
8d8bb39b FT |
486 | if (!dma_mapping_error(dev, adapter->rx_queue.queue_dma)) { |
487 | dma_unmap_single(dev, | |
1da177e4 LT |
488 | adapter->rx_queue.queue_dma, |
489 | adapter->rx_queue.queue_len, | |
490 | DMA_BIDIRECTIONAL); | |
491 | adapter->rx_queue.queue_dma = DMA_ERROR_CODE; | |
492 | } | |
493 | kfree(adapter->rx_queue.queue_addr); | |
494 | adapter->rx_queue.queue_addr = NULL; | |
495 | } | |
496 | ||
b6d35182 | 497 | for(i = 0; i<IbmVethNumBufferPools; i++) |
860f242e | 498 | if (adapter->rx_buff_pool[i].active) |
d7fbeba6 | 499 | ibmveth_free_buffer_pool(adapter, |
860f242e | 500 | &adapter->rx_buff_pool[i]); |
1096d63d RJ |
501 | |
502 | if (adapter->bounce_buffer != NULL) { | |
c713e7cb | 503 | if (!dma_mapping_error(dev, adapter->bounce_buffer_dma)) { |
1096d63d RJ |
504 | dma_unmap_single(&adapter->vdev->dev, |
505 | adapter->bounce_buffer_dma, | |
506 | adapter->netdev->mtu + IBMVETH_BUFF_OH, | |
507 | DMA_BIDIRECTIONAL); | |
508 | adapter->bounce_buffer_dma = DMA_ERROR_CODE; | |
509 | } | |
510 | kfree(adapter->bounce_buffer); | |
511 | adapter->bounce_buffer = NULL; | |
512 | } | |
1da177e4 LT |
513 | } |
514 | ||
bbedefcc ME |
515 | static int ibmveth_register_logical_lan(struct ibmveth_adapter *adapter, |
516 | union ibmveth_buf_desc rxq_desc, u64 mac_address) | |
517 | { | |
518 | int rc, try_again = 1; | |
519 | ||
520 | /* After a kexec the adapter will still be open, so our attempt to | |
521 | * open it will fail. So if we get a failure we free the adapter and | |
522 | * try again, but only once. */ | |
523 | retry: | |
524 | rc = h_register_logical_lan(adapter->vdev->unit_address, | |
525 | adapter->buffer_list_dma, rxq_desc.desc, | |
526 | adapter->filter_list_dma, mac_address); | |
527 | ||
528 | if (rc != H_SUCCESS && try_again) { | |
529 | do { | |
530 | rc = h_free_logical_lan(adapter->vdev->unit_address); | |
531 | } while (H_IS_LONG_BUSY(rc) || (rc == H_BUSY)); | |
532 | ||
533 | try_again = 0; | |
534 | goto retry; | |
535 | } | |
536 | ||
537 | return rc; | |
538 | } | |
539 | ||
1da177e4 LT |
540 | static int ibmveth_open(struct net_device *netdev) |
541 | { | |
4cf1653a | 542 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 543 | u64 mac_address = 0; |
b6d35182 | 544 | int rxq_entries = 1; |
1da177e4 LT |
545 | unsigned long lpar_rc; |
546 | int rc; | |
547 | union ibmveth_buf_desc rxq_desc; | |
b6d35182 | 548 | int i; |
8d8bb39b | 549 | struct device *dev; |
1da177e4 LT |
550 | |
551 | ibmveth_debug_printk("open starting\n"); | |
552 | ||
bea3348e SH |
553 | napi_enable(&adapter->napi); |
554 | ||
b6d35182 SL |
555 | for(i = 0; i<IbmVethNumBufferPools; i++) |
556 | rxq_entries += adapter->rx_buff_pool[i].size; | |
d7fbeba6 | 557 | |
1da177e4 LT |
558 | adapter->buffer_list_addr = (void*) get_zeroed_page(GFP_KERNEL); |
559 | adapter->filter_list_addr = (void*) get_zeroed_page(GFP_KERNEL); | |
d7fbeba6 | 560 | |
1da177e4 LT |
561 | if(!adapter->buffer_list_addr || !adapter->filter_list_addr) { |
562 | ibmveth_error_printk("unable to allocate filter or buffer list pages\n"); | |
563 | ibmveth_cleanup(adapter); | |
bea3348e | 564 | napi_disable(&adapter->napi); |
1da177e4 LT |
565 | return -ENOMEM; |
566 | } | |
567 | ||
568 | adapter->rx_queue.queue_len = sizeof(struct ibmveth_rx_q_entry) * rxq_entries; | |
569 | adapter->rx_queue.queue_addr = kmalloc(adapter->rx_queue.queue_len, GFP_KERNEL); | |
570 | ||
571 | if(!adapter->rx_queue.queue_addr) { | |
572 | ibmveth_error_printk("unable to allocate rx queue pages\n"); | |
573 | ibmveth_cleanup(adapter); | |
bea3348e | 574 | napi_disable(&adapter->napi); |
1da177e4 LT |
575 | return -ENOMEM; |
576 | } | |
577 | ||
8d8bb39b FT |
578 | dev = &adapter->vdev->dev; |
579 | ||
580 | adapter->buffer_list_dma = dma_map_single(dev, | |
1da177e4 | 581 | adapter->buffer_list_addr, 4096, DMA_BIDIRECTIONAL); |
8d8bb39b | 582 | adapter->filter_list_dma = dma_map_single(dev, |
1da177e4 | 583 | adapter->filter_list_addr, 4096, DMA_BIDIRECTIONAL); |
8d8bb39b | 584 | adapter->rx_queue.queue_dma = dma_map_single(dev, |
1da177e4 LT |
585 | adapter->rx_queue.queue_addr, |
586 | adapter->rx_queue.queue_len, DMA_BIDIRECTIONAL); | |
587 | ||
8d8bb39b FT |
588 | if ((dma_mapping_error(dev, adapter->buffer_list_dma)) || |
589 | (dma_mapping_error(dev, adapter->filter_list_dma)) || | |
590 | (dma_mapping_error(dev, adapter->rx_queue.queue_dma))) { | |
1da177e4 LT |
591 | ibmveth_error_printk("unable to map filter or buffer list pages\n"); |
592 | ibmveth_cleanup(adapter); | |
bea3348e | 593 | napi_disable(&adapter->napi); |
1da177e4 LT |
594 | return -ENOMEM; |
595 | } | |
596 | ||
597 | adapter->rx_queue.index = 0; | |
598 | adapter->rx_queue.num_slots = rxq_entries; | |
599 | adapter->rx_queue.toggle = 1; | |
600 | ||
1da177e4 LT |
601 | memcpy(&mac_address, netdev->dev_addr, netdev->addr_len); |
602 | mac_address = mac_address >> 16; | |
603 | ||
79ef4a4d | 604 | rxq_desc.fields.flags_len = IBMVETH_BUF_VALID | adapter->rx_queue.queue_len; |
1da177e4 LT |
605 | rxq_desc.fields.address = adapter->rx_queue.queue_dma; |
606 | ||
607 | ibmveth_debug_printk("buffer list @ 0x%p\n", adapter->buffer_list_addr); | |
608 | ibmveth_debug_printk("filter list @ 0x%p\n", adapter->filter_list_addr); | |
609 | ibmveth_debug_printk("receive q @ 0x%p\n", adapter->rx_queue.queue_addr); | |
610 | ||
4347ef15 SL |
611 | h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE); |
612 | ||
bbedefcc | 613 | lpar_rc = ibmveth_register_logical_lan(adapter, rxq_desc, mac_address); |
1da177e4 | 614 | |
706c8c93 | 615 | if(lpar_rc != H_SUCCESS) { |
1da177e4 | 616 | ibmveth_error_printk("h_register_logical_lan failed with %ld\n", lpar_rc); |
a1c5a893 | 617 | ibmveth_error_printk("buffer TCE:0x%llx filter TCE:0x%llx rxq desc:0x%llx MAC:0x%llx\n", |
1da177e4 LT |
618 | adapter->buffer_list_dma, |
619 | adapter->filter_list_dma, | |
620 | rxq_desc.desc, | |
621 | mac_address); | |
622 | ibmveth_cleanup(adapter); | |
bea3348e | 623 | napi_disable(&adapter->napi); |
d7fbeba6 | 624 | return -ENONET; |
1da177e4 LT |
625 | } |
626 | ||
860f242e SL |
627 | for(i = 0; i<IbmVethNumBufferPools; i++) { |
628 | if(!adapter->rx_buff_pool[i].active) | |
629 | continue; | |
630 | if (ibmveth_alloc_buffer_pool(&adapter->rx_buff_pool[i])) { | |
631 | ibmveth_error_printk("unable to alloc pool\n"); | |
632 | adapter->rx_buff_pool[i].active = 0; | |
633 | ibmveth_cleanup(adapter); | |
bea3348e | 634 | napi_disable(&adapter->napi); |
860f242e SL |
635 | return -ENOMEM ; |
636 | } | |
637 | } | |
638 | ||
1da177e4 | 639 | ibmveth_debug_printk("registering irq 0x%x\n", netdev->irq); |
a0607fd3 | 640 | if((rc = request_irq(netdev->irq, ibmveth_interrupt, 0, netdev->name, netdev)) != 0) { |
1da177e4 LT |
641 | ibmveth_error_printk("unable to request irq 0x%x, rc %d\n", netdev->irq, rc); |
642 | do { | |
643 | rc = h_free_logical_lan(adapter->vdev->unit_address); | |
706c8c93 | 644 | } while (H_IS_LONG_BUSY(rc) || (rc == H_BUSY)); |
1da177e4 LT |
645 | |
646 | ibmveth_cleanup(adapter); | |
bea3348e | 647 | napi_disable(&adapter->napi); |
1da177e4 LT |
648 | return rc; |
649 | } | |
650 | ||
1096d63d RJ |
651 | adapter->bounce_buffer = |
652 | kmalloc(netdev->mtu + IBMVETH_BUFF_OH, GFP_KERNEL); | |
653 | if (!adapter->bounce_buffer) { | |
654 | ibmveth_error_printk("unable to allocate bounce buffer\n"); | |
655 | ibmveth_cleanup(adapter); | |
656 | napi_disable(&adapter->napi); | |
657 | return -ENOMEM; | |
658 | } | |
659 | adapter->bounce_buffer_dma = | |
660 | dma_map_single(&adapter->vdev->dev, adapter->bounce_buffer, | |
661 | netdev->mtu + IBMVETH_BUFF_OH, DMA_BIDIRECTIONAL); | |
8d8bb39b | 662 | if (dma_mapping_error(dev, adapter->bounce_buffer_dma)) { |
1096d63d RJ |
663 | ibmveth_error_printk("unable to map bounce buffer\n"); |
664 | ibmveth_cleanup(adapter); | |
665 | napi_disable(&adapter->napi); | |
666 | return -ENOMEM; | |
667 | } | |
668 | ||
e2adbcb4 | 669 | ibmveth_debug_printk("initial replenish cycle\n"); |
7d12e780 | 670 | ibmveth_interrupt(netdev->irq, netdev); |
1da177e4 | 671 | |
e2adbcb4 | 672 | netif_start_queue(netdev); |
1da177e4 LT |
673 | |
674 | ibmveth_debug_printk("open complete\n"); | |
675 | ||
676 | return 0; | |
677 | } | |
678 | ||
679 | static int ibmveth_close(struct net_device *netdev) | |
680 | { | |
4cf1653a | 681 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 682 | long lpar_rc; |
d7fbeba6 | 683 | |
1da177e4 LT |
684 | ibmveth_debug_printk("close starting\n"); |
685 | ||
bea3348e SH |
686 | napi_disable(&adapter->napi); |
687 | ||
860f242e SL |
688 | if (!adapter->pool_config) |
689 | netif_stop_queue(netdev); | |
1da177e4 | 690 | |
ee2e6114 | 691 | h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE); |
1da177e4 | 692 | |
1da177e4 LT |
693 | do { |
694 | lpar_rc = h_free_logical_lan(adapter->vdev->unit_address); | |
706c8c93 | 695 | } while (H_IS_LONG_BUSY(lpar_rc) || (lpar_rc == H_BUSY)); |
1da177e4 | 696 | |
706c8c93 | 697 | if(lpar_rc != H_SUCCESS) |
1da177e4 LT |
698 | { |
699 | ibmveth_error_printk("h_free_logical_lan failed with %lx, continuing with close\n", | |
700 | lpar_rc); | |
701 | } | |
702 | ||
ee2e6114 RJ |
703 | free_irq(netdev->irq, netdev); |
704 | ||
1da177e4 LT |
705 | adapter->rx_no_buffer = *(u64*)(((char*)adapter->buffer_list_addr) + 4096 - 8); |
706 | ||
707 | ibmveth_cleanup(adapter); | |
708 | ||
709 | ibmveth_debug_printk("close complete\n"); | |
710 | ||
711 | return 0; | |
712 | } | |
713 | ||
714 | static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) { | |
715 | cmd->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE); | |
716 | cmd->advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg | ADVERTISED_FIBRE); | |
717 | cmd->speed = SPEED_1000; | |
718 | cmd->duplex = DUPLEX_FULL; | |
719 | cmd->port = PORT_FIBRE; | |
720 | cmd->phy_address = 0; | |
721 | cmd->transceiver = XCVR_INTERNAL; | |
722 | cmd->autoneg = AUTONEG_ENABLE; | |
723 | cmd->maxtxpkt = 0; | |
724 | cmd->maxrxpkt = 1; | |
725 | return 0; | |
726 | } | |
727 | ||
728 | static void netdev_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info) { | |
729 | strncpy(info->driver, ibmveth_driver_name, sizeof(info->driver) - 1); | |
730 | strncpy(info->version, ibmveth_driver_version, sizeof(info->version) - 1); | |
731 | } | |
732 | ||
733 | static u32 netdev_get_link(struct net_device *dev) { | |
734 | return 1; | |
735 | } | |
736 | ||
5fc7e01c BK |
737 | static void ibmveth_set_rx_csum_flags(struct net_device *dev, u32 data) |
738 | { | |
4cf1653a | 739 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
5fc7e01c BK |
740 | |
741 | if (data) | |
742 | adapter->rx_csum = 1; | |
743 | else { | |
744 | /* | |
745 | * Since the ibmveth firmware interface does not have the concept of | |
746 | * separate tx/rx checksum offload enable, if rx checksum is disabled | |
747 | * we also have to disable tx checksum offload. Once we disable rx | |
748 | * checksum offload, we are no longer allowed to send tx buffers that | |
749 | * are not properly checksummed. | |
750 | */ | |
751 | adapter->rx_csum = 0; | |
752 | dev->features &= ~NETIF_F_IP_CSUM; | |
753 | } | |
754 | } | |
755 | ||
756 | static void ibmveth_set_tx_csum_flags(struct net_device *dev, u32 data) | |
757 | { | |
4cf1653a | 758 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
5fc7e01c BK |
759 | |
760 | if (data) { | |
761 | dev->features |= NETIF_F_IP_CSUM; | |
762 | adapter->rx_csum = 1; | |
763 | } else | |
764 | dev->features &= ~NETIF_F_IP_CSUM; | |
765 | } | |
766 | ||
767 | static int ibmveth_set_csum_offload(struct net_device *dev, u32 data, | |
768 | void (*done) (struct net_device *, u32)) | |
769 | { | |
4cf1653a | 770 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
ff5bfc35 | 771 | unsigned long set_attr, clr_attr, ret_attr; |
5fc7e01c BK |
772 | long ret; |
773 | int rc1 = 0, rc2 = 0; | |
774 | int restart = 0; | |
775 | ||
776 | if (netif_running(dev)) { | |
777 | restart = 1; | |
778 | adapter->pool_config = 1; | |
779 | ibmveth_close(dev); | |
780 | adapter->pool_config = 0; | |
781 | } | |
782 | ||
79ef4a4d BK |
783 | set_attr = 0; |
784 | clr_attr = 0; | |
5fc7e01c BK |
785 | |
786 | if (data) | |
79ef4a4d | 787 | set_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM; |
5fc7e01c | 788 | else |
79ef4a4d | 789 | clr_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM; |
5fc7e01c | 790 | |
79ef4a4d | 791 | ret = h_illan_attributes(adapter->vdev->unit_address, 0, 0, &ret_attr); |
5fc7e01c | 792 | |
79ef4a4d BK |
793 | if (ret == H_SUCCESS && !(ret_attr & IBMVETH_ILLAN_ACTIVE_TRUNK) && |
794 | !(ret_attr & IBMVETH_ILLAN_TRUNK_PRI_MASK) && | |
795 | (ret_attr & IBMVETH_ILLAN_PADDED_PKT_CSUM)) { | |
796 | ret = h_illan_attributes(adapter->vdev->unit_address, clr_attr, | |
797 | set_attr, &ret_attr); | |
5fc7e01c BK |
798 | |
799 | if (ret != H_SUCCESS) { | |
800 | rc1 = -EIO; | |
801 | ibmveth_error_printk("unable to change checksum offload settings." | |
802 | " %d rc=%ld\n", data, ret); | |
803 | ||
804 | ret = h_illan_attributes(adapter->vdev->unit_address, | |
79ef4a4d | 805 | set_attr, clr_attr, &ret_attr); |
5fc7e01c BK |
806 | } else |
807 | done(dev, data); | |
808 | } else { | |
809 | rc1 = -EIO; | |
810 | ibmveth_error_printk("unable to change checksum offload settings." | |
79ef4a4d | 811 | " %d rc=%ld ret_attr=%lx\n", data, ret, ret_attr); |
5fc7e01c BK |
812 | } |
813 | ||
814 | if (restart) | |
815 | rc2 = ibmveth_open(dev); | |
816 | ||
817 | return rc1 ? rc1 : rc2; | |
818 | } | |
819 | ||
820 | static int ibmveth_set_rx_csum(struct net_device *dev, u32 data) | |
821 | { | |
4cf1653a | 822 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
5fc7e01c BK |
823 | |
824 | if ((data && adapter->rx_csum) || (!data && !adapter->rx_csum)) | |
825 | return 0; | |
826 | ||
827 | return ibmveth_set_csum_offload(dev, data, ibmveth_set_rx_csum_flags); | |
828 | } | |
829 | ||
830 | static int ibmveth_set_tx_csum(struct net_device *dev, u32 data) | |
831 | { | |
4cf1653a | 832 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
5fc7e01c BK |
833 | int rc = 0; |
834 | ||
835 | if (data && (dev->features & NETIF_F_IP_CSUM)) | |
836 | return 0; | |
837 | if (!data && !(dev->features & NETIF_F_IP_CSUM)) | |
838 | return 0; | |
839 | ||
840 | if (data && !adapter->rx_csum) | |
841 | rc = ibmveth_set_csum_offload(dev, data, ibmveth_set_tx_csum_flags); | |
842 | else | |
843 | ibmveth_set_tx_csum_flags(dev, data); | |
844 | ||
845 | return rc; | |
846 | } | |
847 | ||
848 | static u32 ibmveth_get_rx_csum(struct net_device *dev) | |
849 | { | |
4cf1653a | 850 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
5fc7e01c BK |
851 | return adapter->rx_csum; |
852 | } | |
853 | ||
ddbb4de9 BK |
854 | static void ibmveth_get_strings(struct net_device *dev, u32 stringset, u8 *data) |
855 | { | |
856 | int i; | |
857 | ||
858 | if (stringset != ETH_SS_STATS) | |
859 | return; | |
860 | ||
861 | for (i = 0; i < ARRAY_SIZE(ibmveth_stats); i++, data += ETH_GSTRING_LEN) | |
862 | memcpy(data, ibmveth_stats[i].name, ETH_GSTRING_LEN); | |
863 | } | |
864 | ||
b9f2c044 | 865 | static int ibmveth_get_sset_count(struct net_device *dev, int sset) |
ddbb4de9 | 866 | { |
b9f2c044 JG |
867 | switch (sset) { |
868 | case ETH_SS_STATS: | |
869 | return ARRAY_SIZE(ibmveth_stats); | |
870 | default: | |
871 | return -EOPNOTSUPP; | |
872 | } | |
ddbb4de9 BK |
873 | } |
874 | ||
875 | static void ibmveth_get_ethtool_stats(struct net_device *dev, | |
876 | struct ethtool_stats *stats, u64 *data) | |
877 | { | |
878 | int i; | |
4cf1653a | 879 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
ddbb4de9 BK |
880 | |
881 | for (i = 0; i < ARRAY_SIZE(ibmveth_stats); i++) | |
882 | data[i] = IBMVETH_GET_STAT(adapter, ibmveth_stats[i].offset); | |
883 | } | |
884 | ||
7282d491 | 885 | static const struct ethtool_ops netdev_ethtool_ops = { |
1da177e4 LT |
886 | .get_drvinfo = netdev_get_drvinfo, |
887 | .get_settings = netdev_get_settings, | |
888 | .get_link = netdev_get_link, | |
5fc7e01c BK |
889 | .set_tx_csum = ibmveth_set_tx_csum, |
890 | .get_rx_csum = ibmveth_get_rx_csum, | |
891 | .set_rx_csum = ibmveth_set_rx_csum, | |
ddbb4de9 | 892 | .get_strings = ibmveth_get_strings, |
b9f2c044 | 893 | .get_sset_count = ibmveth_get_sset_count, |
ddbb4de9 | 894 | .get_ethtool_stats = ibmveth_get_ethtool_stats, |
1da177e4 LT |
895 | }; |
896 | ||
897 | static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
898 | { | |
899 | return -EOPNOTSUPP; | |
900 | } | |
901 | ||
902 | #define page_offset(v) ((unsigned long)(v) & ((1 << 12) - 1)) | |
903 | ||
61357325 SH |
904 | static netdev_tx_t ibmveth_start_xmit(struct sk_buff *skb, |
905 | struct net_device *netdev) | |
1da177e4 | 906 | { |
4cf1653a | 907 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
3449a2ab | 908 | union ibmveth_buf_desc desc; |
1da177e4 | 909 | unsigned long lpar_rc; |
1da177e4 LT |
910 | unsigned long correlator; |
911 | unsigned int retry_count; | |
60296d9e SL |
912 | unsigned int tx_dropped = 0; |
913 | unsigned int tx_bytes = 0; | |
914 | unsigned int tx_packets = 0; | |
915 | unsigned int tx_send_failed = 0; | |
916 | unsigned int tx_map_failed = 0; | |
1096d63d RJ |
917 | int used_bounce = 0; |
918 | unsigned long data_dma_addr; | |
60296d9e | 919 | |
79ef4a4d | 920 | desc.fields.flags_len = IBMVETH_BUF_VALID | skb->len; |
1da177e4 | 921 | |
f4ff2872 BK |
922 | if (skb->ip_summed == CHECKSUM_PARTIAL && |
923 | ip_hdr(skb)->protocol != IPPROTO_TCP && skb_checksum_help(skb)) { | |
924 | ibmveth_error_printk("tx: failed to checksum packet\n"); | |
925 | tx_dropped++; | |
926 | goto out; | |
927 | } | |
928 | ||
929 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
930 | unsigned char *buf = skb_transport_header(skb) + skb->csum_offset; | |
931 | ||
79ef4a4d | 932 | desc.fields.flags_len |= (IBMVETH_BUF_NO_CSUM | IBMVETH_BUF_CSUM_GOOD); |
f4ff2872 BK |
933 | |
934 | /* Need to zero out the checksum */ | |
935 | buf[0] = 0; | |
936 | buf[1] = 0; | |
937 | } | |
938 | ||
c08cc3cc SL |
939 | if (skb->len < tx_copybreak) { |
940 | used_bounce = 1; | |
941 | } else { | |
942 | data_dma_addr = dma_map_single(&adapter->vdev->dev, skb->data, | |
943 | skb->len, DMA_TO_DEVICE); | |
944 | if (dma_mapping_error(&adapter->vdev->dev, data_dma_addr)) { | |
945 | if (!firmware_has_feature(FW_FEATURE_CMO)) | |
946 | ibmveth_error_printk("tx: unable to map " | |
947 | "xmit buffer\n"); | |
948 | tx_map_failed++; | |
949 | used_bounce = 1; | |
950 | } | |
951 | } | |
952 | ||
953 | if (used_bounce) { | |
1096d63d RJ |
954 | skb_copy_from_linear_data(skb, adapter->bounce_buffer, |
955 | skb->len); | |
956 | desc.fields.address = adapter->bounce_buffer_dma; | |
1096d63d RJ |
957 | } else |
958 | desc.fields.address = data_dma_addr; | |
1da177e4 | 959 | |
1da177e4 LT |
960 | /* send the frame. Arbitrarily set retrycount to 1024 */ |
961 | correlator = 0; | |
962 | retry_count = 1024; | |
963 | do { | |
964 | lpar_rc = h_send_logical_lan(adapter->vdev->unit_address, | |
3449a2ab BK |
965 | desc.desc, 0, 0, 0, 0, 0, |
966 | correlator, &correlator); | |
706c8c93 | 967 | } while ((lpar_rc == H_BUSY) && (retry_count--)); |
d7fbeba6 | 968 | |
706c8c93 | 969 | if(lpar_rc != H_SUCCESS && lpar_rc != H_DROPPED) { |
1da177e4 | 970 | ibmveth_error_printk("tx: h_send_logical_lan failed with rc=%ld\n", lpar_rc); |
3449a2ab | 971 | ibmveth_error_printk("tx: valid=%d, len=%d, address=0x%08x\n", |
79ef4a4d BK |
972 | (desc.fields.flags_len & IBMVETH_BUF_VALID) ? 1 : 0, |
973 | skb->len, desc.fields.address); | |
60296d9e SL |
974 | tx_send_failed++; |
975 | tx_dropped++; | |
1da177e4 | 976 | } else { |
60296d9e SL |
977 | tx_packets++; |
978 | tx_bytes += skb->len; | |
1da177e4 LT |
979 | } |
980 | ||
1096d63d RJ |
981 | if (!used_bounce) |
982 | dma_unmap_single(&adapter->vdev->dev, data_dma_addr, | |
983 | skb->len, DMA_TO_DEVICE); | |
1da177e4 | 984 | |
e8cb7eb4 | 985 | out: |
09f75cd7 JG |
986 | netdev->stats.tx_dropped += tx_dropped; |
987 | netdev->stats.tx_bytes += tx_bytes; | |
988 | netdev->stats.tx_packets += tx_packets; | |
60296d9e SL |
989 | adapter->tx_send_failed += tx_send_failed; |
990 | adapter->tx_map_failed += tx_map_failed; | |
60296d9e | 991 | |
1da177e4 | 992 | dev_kfree_skb(skb); |
6ed10654 | 993 | return NETDEV_TX_OK; |
1da177e4 LT |
994 | } |
995 | ||
bea3348e | 996 | static int ibmveth_poll(struct napi_struct *napi, int budget) |
1da177e4 | 997 | { |
bea3348e SH |
998 | struct ibmveth_adapter *adapter = container_of(napi, struct ibmveth_adapter, napi); |
999 | struct net_device *netdev = adapter->netdev; | |
1da177e4 | 1000 | int frames_processed = 0; |
1da177e4 LT |
1001 | unsigned long lpar_rc; |
1002 | ||
1003 | restart_poll: | |
1004 | do { | |
bea3348e | 1005 | struct sk_buff *skb; |
1da177e4 | 1006 | |
bea3348e SH |
1007 | if (!ibmveth_rxq_pending_buffer(adapter)) |
1008 | break; | |
1da177e4 | 1009 | |
bea3348e SH |
1010 | rmb(); |
1011 | if (!ibmveth_rxq_buffer_valid(adapter)) { | |
1012 | wmb(); /* suggested by larson1 */ | |
1013 | adapter->rx_invalid_buffer++; | |
1014 | ibmveth_debug_printk("recycling invalid buffer\n"); | |
1015 | ibmveth_rxq_recycle_buffer(adapter); | |
1016 | } else { | |
1017 | int length = ibmveth_rxq_frame_length(adapter); | |
1018 | int offset = ibmveth_rxq_frame_offset(adapter); | |
f4ff2872 BK |
1019 | int csum_good = ibmveth_rxq_csum_good(adapter); |
1020 | ||
bea3348e | 1021 | skb = ibmveth_rxq_get_buffer(adapter); |
f4ff2872 BK |
1022 | if (csum_good) |
1023 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1da177e4 | 1024 | |
bea3348e | 1025 | ibmveth_rxq_harvest_buffer(adapter); |
1da177e4 | 1026 | |
bea3348e SH |
1027 | skb_reserve(skb, offset); |
1028 | skb_put(skb, length); | |
1029 | skb->protocol = eth_type_trans(skb, netdev); | |
1da177e4 | 1030 | |
bea3348e | 1031 | netif_receive_skb(skb); /* send it up */ |
1da177e4 | 1032 | |
09f75cd7 JG |
1033 | netdev->stats.rx_packets++; |
1034 | netdev->stats.rx_bytes += length; | |
bea3348e | 1035 | frames_processed++; |
1da177e4 | 1036 | } |
bea3348e | 1037 | } while (frames_processed < budget); |
1da177e4 | 1038 | |
e2adbcb4 | 1039 | ibmveth_replenish_task(adapter); |
1da177e4 | 1040 | |
bea3348e SH |
1041 | if (frames_processed < budget) { |
1042 | /* We think we are done - reenable interrupts, | |
1043 | * then check once more to make sure we are done. | |
1044 | */ | |
1045 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, | |
1046 | VIO_IRQ_ENABLE); | |
1da177e4 | 1047 | |
bea3348e | 1048 | ibmveth_assert(lpar_rc == H_SUCCESS); |
1da177e4 | 1049 | |
288379f0 | 1050 | napi_complete(napi); |
1da177e4 | 1051 | |
bea3348e | 1052 | if (ibmveth_rxq_pending_buffer(adapter) && |
288379f0 | 1053 | napi_reschedule(napi)) { |
bea3348e SH |
1054 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, |
1055 | VIO_IRQ_DISABLE); | |
1056 | goto restart_poll; | |
1057 | } | |
1da177e4 LT |
1058 | } |
1059 | ||
bea3348e | 1060 | return frames_processed; |
1da177e4 LT |
1061 | } |
1062 | ||
7d12e780 | 1063 | static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance) |
d7fbeba6 | 1064 | { |
1da177e4 | 1065 | struct net_device *netdev = dev_instance; |
4cf1653a | 1066 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1067 | unsigned long lpar_rc; |
1068 | ||
288379f0 | 1069 | if (napi_schedule_prep(&adapter->napi)) { |
bea3348e SH |
1070 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, |
1071 | VIO_IRQ_DISABLE); | |
706c8c93 | 1072 | ibmveth_assert(lpar_rc == H_SUCCESS); |
288379f0 | 1073 | __napi_schedule(&adapter->napi); |
1da177e4 LT |
1074 | } |
1075 | return IRQ_HANDLED; | |
1076 | } | |
1077 | ||
1da177e4 LT |
1078 | static void ibmveth_set_multicast_list(struct net_device *netdev) |
1079 | { | |
4cf1653a | 1080 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1081 | unsigned long lpar_rc; |
1082 | ||
4cd24eaf JP |
1083 | if ((netdev->flags & IFF_PROMISC) || |
1084 | (netdev_mc_count(netdev) > adapter->mcastFilterSize)) { | |
1da177e4 LT |
1085 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, |
1086 | IbmVethMcastEnableRecv | | |
1087 | IbmVethMcastDisableFiltering, | |
1088 | 0); | |
706c8c93 | 1089 | if(lpar_rc != H_SUCCESS) { |
1da177e4 LT |
1090 | ibmveth_error_printk("h_multicast_ctrl rc=%ld when entering promisc mode\n", lpar_rc); |
1091 | } | |
1092 | } else { | |
22bedad3 | 1093 | struct netdev_hw_addr *ha; |
1da177e4 LT |
1094 | /* clear the filter table & disable filtering */ |
1095 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, | |
1096 | IbmVethMcastEnableRecv | | |
1097 | IbmVethMcastDisableFiltering | | |
1098 | IbmVethMcastClearFilterTable, | |
1099 | 0); | |
706c8c93 | 1100 | if(lpar_rc != H_SUCCESS) { |
1da177e4 LT |
1101 | ibmveth_error_printk("h_multicast_ctrl rc=%ld when attempting to clear filter table\n", lpar_rc); |
1102 | } | |
1103 | /* add the addresses to the filter table */ | |
22bedad3 | 1104 | netdev_for_each_mc_addr(ha, netdev) { |
1da177e4 LT |
1105 | // add the multicast address to the filter table |
1106 | unsigned long mcast_addr = 0; | |
22bedad3 | 1107 | memcpy(((char *)&mcast_addr)+2, ha->addr, 6); |
1da177e4 LT |
1108 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, |
1109 | IbmVethMcastAddFilter, | |
1110 | mcast_addr); | |
706c8c93 | 1111 | if(lpar_rc != H_SUCCESS) { |
1da177e4 LT |
1112 | ibmveth_error_printk("h_multicast_ctrl rc=%ld when adding an entry to the filter table\n", lpar_rc); |
1113 | } | |
1114 | } | |
d7fbeba6 | 1115 | |
1da177e4 LT |
1116 | /* re-enable filtering */ |
1117 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, | |
1118 | IbmVethMcastEnableFiltering, | |
1119 | 0); | |
706c8c93 | 1120 | if(lpar_rc != H_SUCCESS) { |
1da177e4 LT |
1121 | ibmveth_error_printk("h_multicast_ctrl rc=%ld when enabling filtering\n", lpar_rc); |
1122 | } | |
1123 | } | |
1124 | } | |
1125 | ||
1126 | static int ibmveth_change_mtu(struct net_device *dev, int new_mtu) | |
1127 | { | |
4cf1653a | 1128 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
1096d63d | 1129 | struct vio_dev *viodev = adapter->vdev; |
860f242e | 1130 | int new_mtu_oh = new_mtu + IBMVETH_BUFF_OH; |
0645bab7 RJ |
1131 | int i, rc; |
1132 | int need_restart = 0; | |
b6d35182 | 1133 | |
860f242e | 1134 | if (new_mtu < IBMVETH_MAX_MTU) |
1da177e4 | 1135 | return -EINVAL; |
b6d35182 | 1136 | |
ce6eea58 BK |
1137 | for (i = 0; i < IbmVethNumBufferPools; i++) |
1138 | if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size) | |
1139 | break; | |
1140 | ||
1141 | if (i == IbmVethNumBufferPools) | |
1142 | return -EINVAL; | |
1143 | ||
ea866e65 SL |
1144 | /* Deactivate all the buffer pools so that the next loop can activate |
1145 | only the buffer pools necessary to hold the new MTU */ | |
0645bab7 RJ |
1146 | if (netif_running(adapter->netdev)) { |
1147 | need_restart = 1; | |
1148 | adapter->pool_config = 1; | |
1149 | ibmveth_close(adapter->netdev); | |
1150 | adapter->pool_config = 0; | |
1151 | } | |
ea866e65 | 1152 | |
860f242e | 1153 | /* Look for an active buffer pool that can hold the new MTU */ |
b6d35182 | 1154 | for(i = 0; i<IbmVethNumBufferPools; i++) { |
ea866e65 | 1155 | adapter->rx_buff_pool[i].active = 1; |
ce6eea58 | 1156 | |
860f242e | 1157 | if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size) { |
1096d63d RJ |
1158 | dev->mtu = new_mtu; |
1159 | vio_cmo_set_dev_desired(viodev, | |
1160 | ibmveth_get_desired_dma | |
1161 | (viodev)); | |
0645bab7 RJ |
1162 | if (need_restart) { |
1163 | return ibmveth_open(adapter->netdev); | |
1164 | } | |
860f242e | 1165 | return 0; |
b6d35182 | 1166 | } |
b6d35182 | 1167 | } |
0645bab7 RJ |
1168 | |
1169 | if (need_restart && (rc = ibmveth_open(adapter->netdev))) | |
1170 | return rc; | |
1171 | ||
860f242e | 1172 | return -EINVAL; |
1da177e4 LT |
1173 | } |
1174 | ||
6b422374 SL |
1175 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1176 | static void ibmveth_poll_controller(struct net_device *dev) | |
1177 | { | |
4cf1653a | 1178 | ibmveth_replenish_task(netdev_priv(dev)); |
5f77113c | 1179 | ibmveth_interrupt(dev->irq, dev); |
6b422374 SL |
1180 | } |
1181 | #endif | |
1182 | ||
1096d63d RJ |
1183 | /** |
1184 | * ibmveth_get_desired_dma - Calculate IO memory desired by the driver | |
1185 | * | |
1186 | * @vdev: struct vio_dev for the device whose desired IO mem is to be returned | |
1187 | * | |
1188 | * Return value: | |
1189 | * Number of bytes of IO data the driver will need to perform well. | |
1190 | */ | |
1191 | static unsigned long ibmveth_get_desired_dma(struct vio_dev *vdev) | |
1192 | { | |
1193 | struct net_device *netdev = dev_get_drvdata(&vdev->dev); | |
1194 | struct ibmveth_adapter *adapter; | |
1195 | unsigned long ret; | |
1196 | int i; | |
1197 | int rxqentries = 1; | |
1198 | ||
1199 | /* netdev inits at probe time along with the structures we need below*/ | |
1200 | if (netdev == NULL) | |
1201 | return IOMMU_PAGE_ALIGN(IBMVETH_IO_ENTITLEMENT_DEFAULT); | |
1202 | ||
1203 | adapter = netdev_priv(netdev); | |
1204 | ||
1205 | ret = IBMVETH_BUFF_LIST_SIZE + IBMVETH_FILT_LIST_SIZE; | |
1206 | ret += IOMMU_PAGE_ALIGN(netdev->mtu); | |
1207 | ||
1208 | for (i = 0; i < IbmVethNumBufferPools; i++) { | |
1209 | /* add the size of the active receive buffers */ | |
1210 | if (adapter->rx_buff_pool[i].active) | |
1211 | ret += | |
1212 | adapter->rx_buff_pool[i].size * | |
1213 | IOMMU_PAGE_ALIGN(adapter->rx_buff_pool[i]. | |
1214 | buff_size); | |
1215 | rxqentries += adapter->rx_buff_pool[i].size; | |
1216 | } | |
1217 | /* add the size of the receive queue entries */ | |
1218 | ret += IOMMU_PAGE_ALIGN(rxqentries * sizeof(struct ibmveth_rx_q_entry)); | |
1219 | ||
1220 | return ret; | |
1221 | } | |
1222 | ||
e186d174 AB |
1223 | static const struct net_device_ops ibmveth_netdev_ops = { |
1224 | .ndo_open = ibmveth_open, | |
1225 | .ndo_stop = ibmveth_close, | |
1226 | .ndo_start_xmit = ibmveth_start_xmit, | |
1227 | .ndo_set_multicast_list = ibmveth_set_multicast_list, | |
1228 | .ndo_do_ioctl = ibmveth_ioctl, | |
1229 | .ndo_change_mtu = ibmveth_change_mtu, | |
1230 | .ndo_validate_addr = eth_validate_addr, | |
1231 | .ndo_set_mac_address = eth_mac_addr, | |
1232 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1233 | .ndo_poll_controller = ibmveth_poll_controller, | |
1234 | #endif | |
1235 | }; | |
1236 | ||
1da177e4 LT |
1237 | static int __devinit ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id) |
1238 | { | |
b6d35182 | 1239 | int rc, i; |
f4ff2872 | 1240 | long ret; |
1da177e4 | 1241 | struct net_device *netdev; |
9dc83afd | 1242 | struct ibmveth_adapter *adapter; |
ff5bfc35 | 1243 | unsigned long set_attr, ret_attr; |
1da177e4 LT |
1244 | |
1245 | unsigned char *mac_addr_p; | |
1246 | unsigned int *mcastFilterSize_p; | |
1247 | ||
1248 | ||
d7fbeba6 | 1249 | ibmveth_debug_printk_no_adapter("entering ibmveth_probe for UA 0x%x\n", |
1da177e4 LT |
1250 | dev->unit_address); |
1251 | ||
493a684a ME |
1252 | mac_addr_p = (unsigned char *) vio_get_attribute(dev, |
1253 | VETH_MAC_ADDR, NULL); | |
1da177e4 LT |
1254 | if(!mac_addr_p) { |
1255 | printk(KERN_ERR "(%s:%3.3d) ERROR: Can't find VETH_MAC_ADDR " | |
1256 | "attribute\n", __FILE__, __LINE__); | |
1257 | return 0; | |
1258 | } | |
d7fbeba6 | 1259 | |
493a684a ME |
1260 | mcastFilterSize_p = (unsigned int *) vio_get_attribute(dev, |
1261 | VETH_MCAST_FILTER_SIZE, NULL); | |
1da177e4 LT |
1262 | if(!mcastFilterSize_p) { |
1263 | printk(KERN_ERR "(%s:%3.3d) ERROR: Can't find " | |
1264 | "VETH_MCAST_FILTER_SIZE attribute\n", | |
1265 | __FILE__, __LINE__); | |
1266 | return 0; | |
1267 | } | |
d7fbeba6 | 1268 | |
1da177e4 LT |
1269 | netdev = alloc_etherdev(sizeof(struct ibmveth_adapter)); |
1270 | ||
1271 | if(!netdev) | |
1272 | return -ENOMEM; | |
1273 | ||
4cf1653a | 1274 | adapter = netdev_priv(netdev); |
c7ae011d | 1275 | dev_set_drvdata(&dev->dev, netdev); |
1da177e4 LT |
1276 | |
1277 | adapter->vdev = dev; | |
1278 | adapter->netdev = netdev; | |
1279 | adapter->mcastFilterSize= *mcastFilterSize_p; | |
860f242e | 1280 | adapter->pool_config = 0; |
d7fbeba6 | 1281 | |
bea3348e SH |
1282 | netif_napi_add(netdev, &adapter->napi, ibmveth_poll, 16); |
1283 | ||
1da177e4 | 1284 | /* Some older boxes running PHYP non-natively have an OF that |
d7fbeba6 | 1285 | returns a 8-byte local-mac-address field (and the first |
1da177e4 | 1286 | 2 bytes have to be ignored) while newer boxes' OF return |
d7fbeba6 | 1287 | a 6-byte field. Note that IEEE 1275 specifies that |
1da177e4 | 1288 | local-mac-address must be a 6-byte field. |
d7fbeba6 | 1289 | The RPA doc specifies that the first byte must be 10b, so |
1da177e4 LT |
1290 | we'll just look for it to solve this 8 vs. 6 byte field issue */ |
1291 | ||
1292 | if ((*mac_addr_p & 0x3) != 0x02) | |
1293 | mac_addr_p += 2; | |
1294 | ||
1295 | adapter->mac_addr = 0; | |
1296 | memcpy(&adapter->mac_addr, mac_addr_p, 6); | |
1297 | ||
1da177e4 | 1298 | netdev->irq = dev->irq; |
e186d174 AB |
1299 | netdev->netdev_ops = &ibmveth_netdev_ops; |
1300 | netdev->ethtool_ops = &netdev_ethtool_ops; | |
1da177e4 LT |
1301 | SET_NETDEV_DEV(netdev, &dev->dev); |
1302 | ||
d44b5e07 | 1303 | memcpy(netdev->dev_addr, &adapter->mac_addr, netdev->addr_len); |
1da177e4 | 1304 | |
860f242e SL |
1305 | for(i = 0; i<IbmVethNumBufferPools; i++) { |
1306 | struct kobject *kobj = &adapter->rx_buff_pool[i].kobj; | |
8dde2a96 GKH |
1307 | int error; |
1308 | ||
d7fbeba6 JG |
1309 | ibmveth_init_buffer_pool(&adapter->rx_buff_pool[i], i, |
1310 | pool_count[i], pool_size[i], | |
860f242e | 1311 | pool_active[i]); |
8dde2a96 GKH |
1312 | error = kobject_init_and_add(kobj, &ktype_veth_pool, |
1313 | &dev->dev.kobj, "pool%d", i); | |
1314 | if (!error) | |
1315 | kobject_uevent(kobj, KOBJ_ADD); | |
860f242e | 1316 | } |
1da177e4 LT |
1317 | |
1318 | ibmveth_debug_printk("adapter @ 0x%p\n", adapter); | |
1319 | ||
1da177e4 LT |
1320 | adapter->buffer_list_dma = DMA_ERROR_CODE; |
1321 | adapter->filter_list_dma = DMA_ERROR_CODE; | |
1322 | adapter->rx_queue.queue_dma = DMA_ERROR_CODE; | |
1323 | ||
1da177e4 LT |
1324 | ibmveth_debug_printk("registering netdev...\n"); |
1325 | ||
79ef4a4d | 1326 | ret = h_illan_attributes(dev->unit_address, 0, 0, &ret_attr); |
f4ff2872 | 1327 | |
79ef4a4d BK |
1328 | if (ret == H_SUCCESS && !(ret_attr & IBMVETH_ILLAN_ACTIVE_TRUNK) && |
1329 | !(ret_attr & IBMVETH_ILLAN_TRUNK_PRI_MASK) && | |
1330 | (ret_attr & IBMVETH_ILLAN_PADDED_PKT_CSUM)) { | |
1331 | set_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM; | |
f4ff2872 | 1332 | |
79ef4a4d | 1333 | ret = h_illan_attributes(dev->unit_address, 0, set_attr, &ret_attr); |
f4ff2872 | 1334 | |
5fc7e01c BK |
1335 | if (ret == H_SUCCESS) { |
1336 | adapter->rx_csum = 1; | |
f4ff2872 | 1337 | netdev->features |= NETIF_F_IP_CSUM; |
5fc7e01c | 1338 | } else |
79ef4a4d | 1339 | ret = h_illan_attributes(dev->unit_address, set_attr, 0, &ret_attr); |
f4ff2872 BK |
1340 | } |
1341 | ||
1da177e4 LT |
1342 | rc = register_netdev(netdev); |
1343 | ||
1344 | if(rc) { | |
1345 | ibmveth_debug_printk("failed to register netdev rc=%d\n", rc); | |
1346 | free_netdev(netdev); | |
1347 | return rc; | |
1348 | } | |
1349 | ||
1350 | ibmveth_debug_printk("registered\n"); | |
1351 | ||
1352 | ibmveth_proc_register_adapter(adapter); | |
1353 | ||
1354 | return 0; | |
1355 | } | |
1356 | ||
1357 | static int __devexit ibmveth_remove(struct vio_dev *dev) | |
1358 | { | |
c7ae011d | 1359 | struct net_device *netdev = dev_get_drvdata(&dev->dev); |
4cf1653a | 1360 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
860f242e SL |
1361 | int i; |
1362 | ||
1363 | for(i = 0; i<IbmVethNumBufferPools; i++) | |
c10997f6 | 1364 | kobject_put(&adapter->rx_buff_pool[i].kobj); |
1da177e4 LT |
1365 | |
1366 | unregister_netdev(netdev); | |
1367 | ||
1368 | ibmveth_proc_unregister_adapter(adapter); | |
1369 | ||
1370 | free_netdev(netdev); | |
1096d63d RJ |
1371 | dev_set_drvdata(&dev->dev, NULL); |
1372 | ||
1da177e4 LT |
1373 | return 0; |
1374 | } | |
1375 | ||
1376 | #ifdef CONFIG_PROC_FS | |
1377 | static void ibmveth_proc_register_driver(void) | |
1378 | { | |
457c4cbc | 1379 | ibmveth_proc_dir = proc_mkdir(IBMVETH_PROC_DIR, init_net.proc_net); |
1da177e4 | 1380 | if (ibmveth_proc_dir) { |
1da177e4 LT |
1381 | } |
1382 | } | |
1383 | ||
1384 | static void ibmveth_proc_unregister_driver(void) | |
1385 | { | |
457c4cbc | 1386 | remove_proc_entry(IBMVETH_PROC_DIR, init_net.proc_net); |
1da177e4 LT |
1387 | } |
1388 | ||
1119d577 | 1389 | static int ibmveth_show(struct seq_file *seq, void *v) |
1da177e4 LT |
1390 | { |
1391 | struct ibmveth_adapter *adapter = seq->private; | |
3a6d54c5 JP |
1392 | char *current_mac = (char *) adapter->netdev->dev_addr; |
1393 | char *firmware_mac = (char *) &adapter->mac_addr; | |
1da177e4 LT |
1394 | |
1395 | seq_printf(seq, "%s %s\n\n", ibmveth_driver_string, ibmveth_driver_version); | |
d7fbeba6 | 1396 | |
1da177e4 | 1397 | seq_printf(seq, "Unit Address: 0x%x\n", adapter->vdev->unit_address); |
e174961c JB |
1398 | seq_printf(seq, "Current MAC: %pM\n", current_mac); |
1399 | seq_printf(seq, "Firmware MAC: %pM\n", firmware_mac); | |
d7fbeba6 | 1400 | |
1da177e4 | 1401 | seq_printf(seq, "\nAdapter Statistics:\n"); |
a1c5a893 SR |
1402 | seq_printf(seq, " TX: vio_map_single failres: %lld\n", adapter->tx_map_failed); |
1403 | seq_printf(seq, " send failures: %lld\n", adapter->tx_send_failed); | |
1404 | seq_printf(seq, " RX: replenish task cycles: %lld\n", adapter->replenish_task_cycles); | |
1405 | seq_printf(seq, " alloc_skb_failures: %lld\n", adapter->replenish_no_mem); | |
1406 | seq_printf(seq, " add buffer failures: %lld\n", adapter->replenish_add_buff_failure); | |
1407 | seq_printf(seq, " invalid buffers: %lld\n", adapter->rx_invalid_buffer); | |
1408 | seq_printf(seq, " no buffers: %lld\n", adapter->rx_no_buffer); | |
d7fbeba6 | 1409 | |
1da177e4 LT |
1410 | return 0; |
1411 | } | |
1da177e4 LT |
1412 | |
1413 | static int ibmveth_proc_open(struct inode *inode, struct file *file) | |
1414 | { | |
1119d577 | 1415 | return single_open(file, ibmveth_show, PDE(inode)->data); |
1da177e4 LT |
1416 | } |
1417 | ||
d54b1fdb | 1418 | static const struct file_operations ibmveth_proc_fops = { |
1da177e4 LT |
1419 | .owner = THIS_MODULE, |
1420 | .open = ibmveth_proc_open, | |
1421 | .read = seq_read, | |
1422 | .llseek = seq_lseek, | |
1119d577 | 1423 | .release = single_release, |
1da177e4 LT |
1424 | }; |
1425 | ||
1426 | static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter) | |
1427 | { | |
1428 | struct proc_dir_entry *entry; | |
1429 | if (ibmveth_proc_dir) { | |
03a85d09 SL |
1430 | char u_addr[10]; |
1431 | sprintf(u_addr, "%x", adapter->vdev->unit_address); | |
a95609cb DL |
1432 | entry = proc_create_data(u_addr, S_IFREG, ibmveth_proc_dir, |
1433 | &ibmveth_proc_fops, adapter); | |
1434 | if (!entry) | |
1da177e4 | 1435 | ibmveth_error_printk("Cannot create adapter proc entry"); |
1da177e4 | 1436 | } |
1da177e4 LT |
1437 | } |
1438 | ||
1439 | static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter) | |
1440 | { | |
1441 | if (ibmveth_proc_dir) { | |
03a85d09 SL |
1442 | char u_addr[10]; |
1443 | sprintf(u_addr, "%x", adapter->vdev->unit_address); | |
1444 | remove_proc_entry(u_addr, ibmveth_proc_dir); | |
1da177e4 LT |
1445 | } |
1446 | } | |
1447 | ||
1448 | #else /* CONFIG_PROC_FS */ | |
d7fbeba6 | 1449 | static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter) |
1da177e4 LT |
1450 | { |
1451 | } | |
1452 | ||
d7fbeba6 | 1453 | static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter) |
1da177e4 LT |
1454 | { |
1455 | } | |
1456 | static void ibmveth_proc_register_driver(void) | |
1457 | { | |
1458 | } | |
1459 | ||
1460 | static void ibmveth_proc_unregister_driver(void) | |
1461 | { | |
1462 | } | |
1463 | #endif /* CONFIG_PROC_FS */ | |
1464 | ||
860f242e SL |
1465 | static struct attribute veth_active_attr; |
1466 | static struct attribute veth_num_attr; | |
1467 | static struct attribute veth_size_attr; | |
1468 | ||
1469 | static ssize_t veth_pool_show(struct kobject * kobj, | |
1470 | struct attribute * attr, char * buf) | |
1471 | { | |
d7fbeba6 | 1472 | struct ibmveth_buff_pool *pool = container_of(kobj, |
860f242e SL |
1473 | struct ibmveth_buff_pool, |
1474 | kobj); | |
1475 | ||
1476 | if (attr == &veth_active_attr) | |
1477 | return sprintf(buf, "%d\n", pool->active); | |
1478 | else if (attr == &veth_num_attr) | |
1479 | return sprintf(buf, "%d\n", pool->size); | |
1480 | else if (attr == &veth_size_attr) | |
1481 | return sprintf(buf, "%d\n", pool->buff_size); | |
1482 | return 0; | |
1483 | } | |
1484 | ||
1485 | static ssize_t veth_pool_store(struct kobject * kobj, struct attribute * attr, | |
1486 | const char * buf, size_t count) | |
1487 | { | |
d7fbeba6 | 1488 | struct ibmveth_buff_pool *pool = container_of(kobj, |
860f242e SL |
1489 | struct ibmveth_buff_pool, |
1490 | kobj); | |
c7ae011d GKH |
1491 | struct net_device *netdev = dev_get_drvdata( |
1492 | container_of(kobj->parent, struct device, kobj)); | |
4cf1653a | 1493 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
860f242e SL |
1494 | long value = simple_strtol(buf, NULL, 10); |
1495 | long rc; | |
1496 | ||
1497 | if (attr == &veth_active_attr) { | |
1498 | if (value && !pool->active) { | |
4aa9c93e BK |
1499 | if (netif_running(netdev)) { |
1500 | if(ibmveth_alloc_buffer_pool(pool)) { | |
1501 | ibmveth_error_printk("unable to alloc pool\n"); | |
1502 | return -ENOMEM; | |
1503 | } | |
1504 | pool->active = 1; | |
1505 | adapter->pool_config = 1; | |
1506 | ibmveth_close(netdev); | |
1507 | adapter->pool_config = 0; | |
1508 | if ((rc = ibmveth_open(netdev))) | |
1509 | return rc; | |
1510 | } else | |
1511 | pool->active = 1; | |
860f242e SL |
1512 | } else if (!value && pool->active) { |
1513 | int mtu = netdev->mtu + IBMVETH_BUFF_OH; | |
1514 | int i; | |
1515 | /* Make sure there is a buffer pool with buffers that | |
1516 | can hold a packet of the size of the MTU */ | |
76b9cfcc | 1517 | for (i = 0; i < IbmVethNumBufferPools; i++) { |
860f242e SL |
1518 | if (pool == &adapter->rx_buff_pool[i]) |
1519 | continue; | |
1520 | if (!adapter->rx_buff_pool[i].active) | |
1521 | continue; | |
76b9cfcc BK |
1522 | if (mtu <= adapter->rx_buff_pool[i].buff_size) |
1523 | break; | |
860f242e | 1524 | } |
76b9cfcc BK |
1525 | |
1526 | if (i == IbmVethNumBufferPools) { | |
860f242e SL |
1527 | ibmveth_error_printk("no active pool >= MTU\n"); |
1528 | return -EPERM; | |
1529 | } | |
76b9cfcc | 1530 | |
76b9cfcc BK |
1531 | if (netif_running(netdev)) { |
1532 | adapter->pool_config = 1; | |
1533 | ibmveth_close(netdev); | |
ea866e65 | 1534 | pool->active = 0; |
76b9cfcc BK |
1535 | adapter->pool_config = 0; |
1536 | if ((rc = ibmveth_open(netdev))) | |
1537 | return rc; | |
1538 | } | |
ea866e65 | 1539 | pool->active = 0; |
860f242e SL |
1540 | } |
1541 | } else if (attr == &veth_num_attr) { | |
1542 | if (value <= 0 || value > IBMVETH_MAX_POOL_COUNT) | |
1543 | return -EINVAL; | |
1544 | else { | |
4aa9c93e BK |
1545 | if (netif_running(netdev)) { |
1546 | adapter->pool_config = 1; | |
1547 | ibmveth_close(netdev); | |
1548 | adapter->pool_config = 0; | |
1549 | pool->size = value; | |
1550 | if ((rc = ibmveth_open(netdev))) | |
1551 | return rc; | |
1552 | } else | |
1553 | pool->size = value; | |
860f242e SL |
1554 | } |
1555 | } else if (attr == &veth_size_attr) { | |
1556 | if (value <= IBMVETH_BUFF_OH || value > IBMVETH_MAX_BUF_SIZE) | |
1557 | return -EINVAL; | |
1558 | else { | |
4aa9c93e BK |
1559 | if (netif_running(netdev)) { |
1560 | adapter->pool_config = 1; | |
1561 | ibmveth_close(netdev); | |
1562 | adapter->pool_config = 0; | |
1563 | pool->buff_size = value; | |
1564 | if ((rc = ibmveth_open(netdev))) | |
1565 | return rc; | |
1566 | } else | |
1567 | pool->buff_size = value; | |
860f242e SL |
1568 | } |
1569 | } | |
1570 | ||
1571 | /* kick the interrupt handler to allocate/deallocate pools */ | |
7d12e780 | 1572 | ibmveth_interrupt(netdev->irq, netdev); |
860f242e SL |
1573 | return count; |
1574 | } | |
1575 | ||
1576 | ||
1577 | #define ATTR(_name, _mode) \ | |
1578 | struct attribute veth_##_name##_attr = { \ | |
7b595756 | 1579 | .name = __stringify(_name), .mode = _mode, \ |
860f242e SL |
1580 | }; |
1581 | ||
1582 | static ATTR(active, 0644); | |
1583 | static ATTR(num, 0644); | |
1584 | static ATTR(size, 0644); | |
1585 | ||
1586 | static struct attribute * veth_pool_attrs[] = { | |
1587 | &veth_active_attr, | |
1588 | &veth_num_attr, | |
1589 | &veth_size_attr, | |
1590 | NULL, | |
1591 | }; | |
1592 | ||
52cf25d0 | 1593 | static const struct sysfs_ops veth_pool_ops = { |
860f242e SL |
1594 | .show = veth_pool_show, |
1595 | .store = veth_pool_store, | |
1596 | }; | |
1597 | ||
1598 | static struct kobj_type ktype_veth_pool = { | |
1599 | .release = NULL, | |
1600 | .sysfs_ops = &veth_pool_ops, | |
1601 | .default_attrs = veth_pool_attrs, | |
1602 | }; | |
1603 | ||
e7a3af5d BK |
1604 | static int ibmveth_resume(struct device *dev) |
1605 | { | |
1606 | struct net_device *netdev = dev_get_drvdata(dev); | |
1607 | ibmveth_interrupt(netdev->irq, netdev); | |
1608 | return 0; | |
1609 | } | |
860f242e | 1610 | |
1da177e4 LT |
1611 | static struct vio_device_id ibmveth_device_table[] __devinitdata= { |
1612 | { "network", "IBM,l-lan"}, | |
fb120da6 | 1613 | { "", "" } |
1da177e4 | 1614 | }; |
1da177e4 LT |
1615 | MODULE_DEVICE_TABLE(vio, ibmveth_device_table); |
1616 | ||
e7a3af5d BK |
1617 | static struct dev_pm_ops ibmveth_pm_ops = { |
1618 | .resume = ibmveth_resume | |
1619 | }; | |
1620 | ||
1da177e4 | 1621 | static struct vio_driver ibmveth_driver = { |
6fdf5392 SR |
1622 | .id_table = ibmveth_device_table, |
1623 | .probe = ibmveth_probe, | |
1624 | .remove = ibmveth_remove, | |
1096d63d | 1625 | .get_desired_dma = ibmveth_get_desired_dma, |
6fdf5392 SR |
1626 | .driver = { |
1627 | .name = ibmveth_driver_name, | |
915124d8 | 1628 | .owner = THIS_MODULE, |
e7a3af5d | 1629 | .pm = &ibmveth_pm_ops, |
6fdf5392 | 1630 | } |
1da177e4 LT |
1631 | }; |
1632 | ||
1633 | static int __init ibmveth_module_init(void) | |
1634 | { | |
1635 | ibmveth_printk("%s: %s %s\n", ibmveth_driver_name, ibmveth_driver_string, ibmveth_driver_version); | |
1636 | ||
1637 | ibmveth_proc_register_driver(); | |
1638 | ||
1639 | return vio_register_driver(&ibmveth_driver); | |
1640 | } | |
1641 | ||
1642 | static void __exit ibmveth_module_exit(void) | |
1643 | { | |
1644 | vio_unregister_driver(&ibmveth_driver); | |
1645 | ibmveth_proc_unregister_driver(); | |
d7fbeba6 | 1646 | } |
1da177e4 LT |
1647 | |
1648 | module_init(ibmveth_module_init); | |
1649 | module_exit(ibmveth_module_exit); |