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658d439b TI |
1 | /* |
2 | * FUJITSU Extended Socket Network Device driver | |
3 | * Copyright (c) 2015 FUJITSU LIMITED | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms and conditions of the GNU General Public License, | |
7 | * version 2, as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, see <http://www.gnu.org/licenses/>. | |
16 | * | |
17 | * The full GNU General Public License is included in this distribution in | |
18 | * the file called "COPYING". | |
19 | * | |
20 | */ | |
21 | ||
22 | #include <linux/module.h> | |
23 | #include <linux/types.h> | |
24 | #include <linux/nls.h> | |
25 | #include <linux/platform_device.h> | |
2fcbca68 | 26 | #include <linux/netdevice.h> |
e5d486dc | 27 | #include <linux/interrupt.h> |
658d439b TI |
28 | |
29 | #include "fjes.h" | |
30 | ||
31 | #define MAJ 1 | |
32 | #define MIN 0 | |
33 | #define DRV_VERSION __stringify(MAJ) "." __stringify(MIN) | |
34 | #define DRV_NAME "fjes" | |
35 | char fjes_driver_name[] = DRV_NAME; | |
36 | char fjes_driver_version[] = DRV_VERSION; | |
37 | static const char fjes_driver_string[] = | |
38 | "FUJITSU Extended Socket Network Device Driver"; | |
39 | static const char fjes_copyright[] = | |
40 | "Copyright (c) 2015 FUJITSU LIMITED"; | |
41 | ||
42 | MODULE_AUTHOR("Taku Izumi <izumi.taku@jp.fujitsu.com>"); | |
43 | MODULE_DESCRIPTION("FUJITSU Extended Socket Network Device Driver"); | |
44 | MODULE_LICENSE("GPL"); | |
45 | MODULE_VERSION(DRV_VERSION); | |
46 | ||
e5d486dc TI |
47 | static int fjes_request_irq(struct fjes_adapter *); |
48 | static void fjes_free_irq(struct fjes_adapter *); | |
49 | ||
50 | static int fjes_open(struct net_device *); | |
51 | static int fjes_close(struct net_device *); | |
52 | static int fjes_setup_resources(struct fjes_adapter *); | |
53 | static void fjes_free_resources(struct fjes_adapter *); | |
9acf51cb | 54 | static netdev_tx_t fjes_xmit_frame(struct sk_buff *, struct net_device *); |
b772b9dc | 55 | static void fjes_raise_intr_rxdata_task(struct work_struct *); |
ac63b947 | 56 | static void fjes_tx_stall_task(struct work_struct *); |
ff5b4210 | 57 | static void fjes_force_close_task(struct work_struct *); |
e5d486dc | 58 | static irqreturn_t fjes_intr(int, void*); |
879bc9a3 TI |
59 | static struct rtnl_link_stats64 * |
60 | fjes_get_stats64(struct net_device *, struct rtnl_link_stats64 *); | |
b9e23a67 | 61 | static int fjes_change_mtu(struct net_device *, int); |
3e3fedda TI |
62 | static int fjes_vlan_rx_add_vid(struct net_device *, __be16 proto, u16); |
63 | static int fjes_vlan_rx_kill_vid(struct net_device *, __be16 proto, u16); | |
4393e767 | 64 | static void fjes_tx_retry(struct net_device *); |
e5d486dc | 65 | |
658d439b TI |
66 | static int fjes_acpi_add(struct acpi_device *); |
67 | static int fjes_acpi_remove(struct acpi_device *); | |
68 | static acpi_status fjes_get_acpi_resource(struct acpi_resource *, void*); | |
69 | ||
70 | static int fjes_probe(struct platform_device *); | |
71 | static int fjes_remove(struct platform_device *); | |
72 | ||
2fcbca68 TI |
73 | static int fjes_sw_init(struct fjes_adapter *); |
74 | static void fjes_netdev_setup(struct net_device *); | |
8edb62a8 | 75 | static void fjes_irq_watch_task(struct work_struct *); |
8fc4cadb | 76 | static void fjes_watch_unshare_task(struct work_struct *); |
26585930 TI |
77 | static void fjes_rx_irq(struct fjes_adapter *, int); |
78 | static int fjes_poll(struct napi_struct *, int); | |
79 | ||
658d439b TI |
80 | static const struct acpi_device_id fjes_acpi_ids[] = { |
81 | {"PNP0C02", 0}, | |
82 | {"", 0}, | |
83 | }; | |
84 | MODULE_DEVICE_TABLE(acpi, fjes_acpi_ids); | |
85 | ||
86 | static struct acpi_driver fjes_acpi_driver = { | |
87 | .name = DRV_NAME, | |
88 | .class = DRV_NAME, | |
89 | .owner = THIS_MODULE, | |
90 | .ids = fjes_acpi_ids, | |
91 | .ops = { | |
92 | .add = fjes_acpi_add, | |
93 | .remove = fjes_acpi_remove, | |
94 | }, | |
95 | }; | |
96 | ||
97 | static struct platform_driver fjes_driver = { | |
98 | .driver = { | |
99 | .name = DRV_NAME, | |
100 | .owner = THIS_MODULE, | |
101 | }, | |
102 | .probe = fjes_probe, | |
103 | .remove = fjes_remove, | |
104 | }; | |
105 | ||
106 | static struct resource fjes_resource[] = { | |
107 | { | |
108 | .flags = IORESOURCE_MEM, | |
109 | .start = 0, | |
110 | .end = 0, | |
111 | }, | |
112 | { | |
113 | .flags = IORESOURCE_IRQ, | |
114 | .start = 0, | |
115 | .end = 0, | |
116 | }, | |
117 | }; | |
118 | ||
119 | static int fjes_acpi_add(struct acpi_device *device) | |
120 | { | |
121 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL}; | |
122 | char str_buf[sizeof(FJES_ACPI_SYMBOL) + 1]; | |
123 | struct platform_device *plat_dev; | |
124 | union acpi_object *str; | |
125 | acpi_status status; | |
126 | int result; | |
127 | ||
128 | status = acpi_evaluate_object(device->handle, "_STR", NULL, &buffer); | |
129 | if (ACPI_FAILURE(status)) | |
130 | return -ENODEV; | |
131 | ||
132 | str = buffer.pointer; | |
133 | result = utf16s_to_utf8s((wchar_t *)str->string.pointer, | |
134 | str->string.length, UTF16_LITTLE_ENDIAN, | |
135 | str_buf, sizeof(str_buf) - 1); | |
136 | str_buf[result] = 0; | |
137 | ||
138 | if (strncmp(FJES_ACPI_SYMBOL, str_buf, strlen(FJES_ACPI_SYMBOL)) != 0) { | |
139 | kfree(buffer.pointer); | |
140 | return -ENODEV; | |
141 | } | |
142 | kfree(buffer.pointer); | |
143 | ||
144 | status = acpi_walk_resources(device->handle, METHOD_NAME__CRS, | |
145 | fjes_get_acpi_resource, fjes_resource); | |
146 | if (ACPI_FAILURE(status)) | |
147 | return -ENODEV; | |
148 | ||
149 | /* create platform_device */ | |
150 | plat_dev = platform_device_register_simple(DRV_NAME, 0, fjes_resource, | |
151 | ARRAY_SIZE(fjes_resource)); | |
152 | device->driver_data = plat_dev; | |
153 | ||
154 | return 0; | |
155 | } | |
156 | ||
157 | static int fjes_acpi_remove(struct acpi_device *device) | |
158 | { | |
159 | struct platform_device *plat_dev; | |
160 | ||
161 | plat_dev = (struct platform_device *)acpi_driver_data(device); | |
162 | platform_device_unregister(plat_dev); | |
163 | ||
164 | return 0; | |
165 | } | |
166 | ||
167 | static acpi_status | |
168 | fjes_get_acpi_resource(struct acpi_resource *acpi_res, void *data) | |
169 | { | |
170 | struct acpi_resource_address32 *addr; | |
171 | struct acpi_resource_irq *irq; | |
172 | struct resource *res = data; | |
173 | ||
174 | switch (acpi_res->type) { | |
175 | case ACPI_RESOURCE_TYPE_ADDRESS32: | |
176 | addr = &acpi_res->data.address32; | |
177 | res[0].start = addr->address.minimum; | |
178 | res[0].end = addr->address.minimum + | |
179 | addr->address.address_length - 1; | |
180 | break; | |
181 | ||
182 | case ACPI_RESOURCE_TYPE_IRQ: | |
183 | irq = &acpi_res->data.irq; | |
184 | if (irq->interrupt_count != 1) | |
185 | return AE_ERROR; | |
186 | res[1].start = irq->interrupts[0]; | |
187 | res[1].end = irq->interrupts[0]; | |
188 | break; | |
189 | ||
190 | default: | |
191 | break; | |
192 | } | |
193 | ||
194 | return AE_OK; | |
195 | } | |
196 | ||
e5d486dc TI |
197 | static int fjes_request_irq(struct fjes_adapter *adapter) |
198 | { | |
199 | struct net_device *netdev = adapter->netdev; | |
200 | int result = -1; | |
201 | ||
8edb62a8 TI |
202 | adapter->interrupt_watch_enable = true; |
203 | if (!delayed_work_pending(&adapter->interrupt_watch_task)) { | |
204 | queue_delayed_work(adapter->control_wq, | |
205 | &adapter->interrupt_watch_task, | |
206 | FJES_IRQ_WATCH_DELAY); | |
207 | } | |
208 | ||
e5d486dc TI |
209 | if (!adapter->irq_registered) { |
210 | result = request_irq(adapter->hw.hw_res.irq, fjes_intr, | |
211 | IRQF_SHARED, netdev->name, adapter); | |
212 | if (result) | |
213 | adapter->irq_registered = false; | |
214 | else | |
215 | adapter->irq_registered = true; | |
216 | } | |
217 | ||
218 | return result; | |
219 | } | |
220 | ||
221 | static void fjes_free_irq(struct fjes_adapter *adapter) | |
222 | { | |
223 | struct fjes_hw *hw = &adapter->hw; | |
224 | ||
8edb62a8 TI |
225 | adapter->interrupt_watch_enable = false; |
226 | cancel_delayed_work_sync(&adapter->interrupt_watch_task); | |
227 | ||
e5d486dc TI |
228 | fjes_hw_set_irqmask(hw, REG_ICTL_MASK_ALL, true); |
229 | ||
230 | if (adapter->irq_registered) { | |
231 | free_irq(adapter->hw.hw_res.irq, adapter); | |
232 | adapter->irq_registered = false; | |
233 | } | |
234 | } | |
235 | ||
2fcbca68 | 236 | static const struct net_device_ops fjes_netdev_ops = { |
e5d486dc TI |
237 | .ndo_open = fjes_open, |
238 | .ndo_stop = fjes_close, | |
9acf51cb | 239 | .ndo_start_xmit = fjes_xmit_frame, |
879bc9a3 | 240 | .ndo_get_stats64 = fjes_get_stats64, |
b9e23a67 | 241 | .ndo_change_mtu = fjes_change_mtu, |
4393e767 | 242 | .ndo_tx_timeout = fjes_tx_retry, |
3e3fedda TI |
243 | .ndo_vlan_rx_add_vid = fjes_vlan_rx_add_vid, |
244 | .ndo_vlan_rx_kill_vid = fjes_vlan_rx_kill_vid, | |
2fcbca68 TI |
245 | }; |
246 | ||
e5d486dc TI |
247 | /* fjes_open - Called when a network interface is made active */ |
248 | static int fjes_open(struct net_device *netdev) | |
249 | { | |
250 | struct fjes_adapter *adapter = netdev_priv(netdev); | |
251 | struct fjes_hw *hw = &adapter->hw; | |
252 | int result; | |
253 | ||
254 | if (adapter->open_guard) | |
255 | return -ENXIO; | |
256 | ||
257 | result = fjes_setup_resources(adapter); | |
258 | if (result) | |
259 | goto err_setup_res; | |
260 | ||
261 | hw->txrx_stop_req_bit = 0; | |
262 | hw->epstop_req_bit = 0; | |
263 | ||
26585930 TI |
264 | napi_enable(&adapter->napi); |
265 | ||
e5d486dc TI |
266 | fjes_hw_capture_interrupt_status(hw); |
267 | ||
268 | result = fjes_request_irq(adapter); | |
269 | if (result) | |
270 | goto err_req_irq; | |
271 | ||
272 | fjes_hw_set_irqmask(hw, REG_ICTL_MASK_ALL, false); | |
273 | ||
274 | netif_tx_start_all_queues(netdev); | |
275 | netif_carrier_on(netdev); | |
276 | ||
277 | return 0; | |
278 | ||
279 | err_req_irq: | |
280 | fjes_free_irq(adapter); | |
26585930 | 281 | napi_disable(&adapter->napi); |
e5d486dc TI |
282 | |
283 | err_setup_res: | |
284 | fjes_free_resources(adapter); | |
285 | return result; | |
286 | } | |
287 | ||
288 | /* fjes_close - Disables a network interface */ | |
289 | static int fjes_close(struct net_device *netdev) | |
290 | { | |
291 | struct fjes_adapter *adapter = netdev_priv(netdev); | |
292 | struct fjes_hw *hw = &adapter->hw; | |
293 | int epidx; | |
294 | ||
295 | netif_tx_stop_all_queues(netdev); | |
296 | netif_carrier_off(netdev); | |
297 | ||
298 | fjes_hw_raise_epstop(hw); | |
299 | ||
26585930 TI |
300 | napi_disable(&adapter->napi); |
301 | ||
e5d486dc TI |
302 | for (epidx = 0; epidx < hw->max_epid; epidx++) { |
303 | if (epidx == hw->my_epid) | |
304 | continue; | |
305 | ||
306 | adapter->hw.ep_shm_info[epidx].tx.info->v1i.rx_status &= | |
307 | ~FJES_RX_POLL_WORK; | |
308 | } | |
309 | ||
310 | fjes_free_irq(adapter); | |
311 | ||
8edb62a8 | 312 | cancel_delayed_work_sync(&adapter->interrupt_watch_task); |
8fc4cadb TI |
313 | cancel_work_sync(&adapter->unshare_watch_task); |
314 | adapter->unshare_watch_bitmask = 0; | |
b772b9dc | 315 | cancel_work_sync(&adapter->raise_intr_rxdata_task); |
ac63b947 | 316 | cancel_work_sync(&adapter->tx_stall_task); |
b772b9dc | 317 | |
785f28e0 | 318 | cancel_work_sync(&hw->update_zone_task); |
b5a9152d | 319 | cancel_work_sync(&hw->epstop_task); |
785f28e0 | 320 | |
e5d486dc TI |
321 | fjes_hw_wait_epstop(hw); |
322 | ||
323 | fjes_free_resources(adapter); | |
324 | ||
325 | return 0; | |
326 | } | |
327 | ||
328 | static int fjes_setup_resources(struct fjes_adapter *adapter) | |
329 | { | |
330 | struct net_device *netdev = adapter->netdev; | |
331 | struct ep_share_mem_info *buf_pair; | |
332 | struct fjes_hw *hw = &adapter->hw; | |
333 | int result; | |
334 | int epidx; | |
335 | ||
336 | mutex_lock(&hw->hw_info.lock); | |
337 | result = fjes_hw_request_info(hw); | |
338 | switch (result) { | |
339 | case 0: | |
340 | for (epidx = 0; epidx < hw->max_epid; epidx++) { | |
341 | hw->ep_shm_info[epidx].es_status = | |
342 | hw->hw_info.res_buf->info.info[epidx].es_status; | |
343 | hw->ep_shm_info[epidx].zone = | |
344 | hw->hw_info.res_buf->info.info[epidx].zone; | |
345 | } | |
346 | break; | |
347 | default: | |
348 | case -ENOMSG: | |
349 | case -EBUSY: | |
350 | adapter->force_reset = true; | |
351 | ||
352 | mutex_unlock(&hw->hw_info.lock); | |
353 | return result; | |
354 | } | |
355 | mutex_unlock(&hw->hw_info.lock); | |
356 | ||
357 | for (epidx = 0; epidx < (hw->max_epid); epidx++) { | |
358 | if ((epidx != hw->my_epid) && | |
359 | (hw->ep_shm_info[epidx].es_status == | |
360 | FJES_ZONING_STATUS_ENABLE)) { | |
361 | fjes_hw_raise_interrupt(hw, epidx, | |
362 | REG_ICTL_MASK_INFO_UPDATE); | |
363 | } | |
364 | } | |
365 | ||
366 | msleep(FJES_OPEN_ZONE_UPDATE_WAIT * hw->max_epid); | |
367 | ||
368 | for (epidx = 0; epidx < (hw->max_epid); epidx++) { | |
369 | if (epidx == hw->my_epid) | |
370 | continue; | |
371 | ||
372 | buf_pair = &hw->ep_shm_info[epidx]; | |
373 | ||
374 | fjes_hw_setup_epbuf(&buf_pair->tx, netdev->dev_addr, | |
375 | netdev->mtu); | |
376 | ||
377 | if (fjes_hw_epid_is_same_zone(hw, epidx)) { | |
378 | mutex_lock(&hw->hw_info.lock); | |
379 | result = | |
380 | fjes_hw_register_buff_addr(hw, epidx, buf_pair); | |
381 | mutex_unlock(&hw->hw_info.lock); | |
382 | ||
383 | switch (result) { | |
384 | case 0: | |
385 | break; | |
386 | case -ENOMSG: | |
387 | case -EBUSY: | |
388 | default: | |
389 | adapter->force_reset = true; | |
390 | return result; | |
391 | } | |
392 | } | |
393 | } | |
394 | ||
395 | return 0; | |
396 | } | |
397 | ||
398 | static void fjes_free_resources(struct fjes_adapter *adapter) | |
399 | { | |
400 | struct net_device *netdev = adapter->netdev; | |
401 | struct fjes_device_command_param param; | |
402 | struct ep_share_mem_info *buf_pair; | |
403 | struct fjes_hw *hw = &adapter->hw; | |
404 | bool reset_flag = false; | |
405 | int result; | |
406 | int epidx; | |
407 | ||
408 | for (epidx = 0; epidx < hw->max_epid; epidx++) { | |
409 | if (epidx == hw->my_epid) | |
410 | continue; | |
411 | ||
412 | mutex_lock(&hw->hw_info.lock); | |
413 | result = fjes_hw_unregister_buff_addr(hw, epidx); | |
414 | mutex_unlock(&hw->hw_info.lock); | |
415 | ||
416 | if (result) | |
417 | reset_flag = true; | |
418 | ||
419 | buf_pair = &hw->ep_shm_info[epidx]; | |
420 | ||
421 | fjes_hw_setup_epbuf(&buf_pair->tx, | |
422 | netdev->dev_addr, netdev->mtu); | |
423 | ||
424 | clear_bit(epidx, &hw->txrx_stop_req_bit); | |
425 | } | |
426 | ||
427 | if (reset_flag || adapter->force_reset) { | |
428 | result = fjes_hw_reset(hw); | |
429 | ||
430 | adapter->force_reset = false; | |
431 | ||
432 | if (result) | |
433 | adapter->open_guard = true; | |
434 | ||
435 | hw->hw_info.buffer_share_bit = 0; | |
436 | ||
437 | memset((void *)¶m, 0, sizeof(param)); | |
438 | ||
439 | param.req_len = hw->hw_info.req_buf_size; | |
440 | param.req_start = __pa(hw->hw_info.req_buf); | |
441 | param.res_len = hw->hw_info.res_buf_size; | |
442 | param.res_start = __pa(hw->hw_info.res_buf); | |
443 | param.share_start = __pa(hw->hw_info.share->ep_status); | |
444 | ||
445 | fjes_hw_init_command_registers(hw, ¶m); | |
446 | } | |
447 | } | |
448 | ||
ac63b947 TI |
449 | static void fjes_tx_stall_task(struct work_struct *work) |
450 | { | |
451 | struct fjes_adapter *adapter = container_of(work, | |
452 | struct fjes_adapter, tx_stall_task); | |
453 | struct net_device *netdev = adapter->netdev; | |
454 | struct fjes_hw *hw = &adapter->hw; | |
455 | int all_queue_available, sendable; | |
456 | enum ep_partner_status pstatus; | |
457 | int max_epid, my_epid, epid; | |
458 | union ep_buffer_info *info; | |
459 | int i; | |
460 | ||
461 | if (((long)jiffies - | |
462 | (long)(netdev->trans_start)) > FJES_TX_TX_STALL_TIMEOUT) { | |
463 | netif_wake_queue(netdev); | |
464 | return; | |
465 | } | |
466 | ||
467 | my_epid = hw->my_epid; | |
468 | max_epid = hw->max_epid; | |
469 | ||
470 | for (i = 0; i < 5; i++) { | |
471 | all_queue_available = 1; | |
472 | ||
473 | for (epid = 0; epid < max_epid; epid++) { | |
474 | if (my_epid == epid) | |
475 | continue; | |
476 | ||
477 | pstatus = fjes_hw_get_partner_ep_status(hw, epid); | |
478 | sendable = (pstatus == EP_PARTNER_SHARED); | |
479 | if (!sendable) | |
480 | continue; | |
481 | ||
482 | info = adapter->hw.ep_shm_info[epid].tx.info; | |
483 | ||
484 | if (EP_RING_FULL(info->v1i.head, info->v1i.tail, | |
485 | info->v1i.count_max)) { | |
486 | all_queue_available = 0; | |
487 | break; | |
488 | } | |
489 | } | |
490 | ||
491 | if (all_queue_available) { | |
492 | netif_wake_queue(netdev); | |
493 | return; | |
494 | } | |
495 | } | |
496 | ||
497 | usleep_range(50, 100); | |
498 | ||
499 | queue_work(adapter->txrx_wq, &adapter->tx_stall_task); | |
500 | } | |
501 | ||
ff5b4210 TI |
502 | static void fjes_force_close_task(struct work_struct *work) |
503 | { | |
504 | struct fjes_adapter *adapter = container_of(work, | |
505 | struct fjes_adapter, force_close_task); | |
506 | struct net_device *netdev = adapter->netdev; | |
507 | ||
508 | rtnl_lock(); | |
509 | dev_close(netdev); | |
510 | rtnl_unlock(); | |
511 | } | |
512 | ||
b772b9dc TI |
513 | static void fjes_raise_intr_rxdata_task(struct work_struct *work) |
514 | { | |
515 | struct fjes_adapter *adapter = container_of(work, | |
516 | struct fjes_adapter, raise_intr_rxdata_task); | |
517 | struct fjes_hw *hw = &adapter->hw; | |
518 | enum ep_partner_status pstatus; | |
519 | int max_epid, my_epid, epid; | |
520 | ||
521 | my_epid = hw->my_epid; | |
522 | max_epid = hw->max_epid; | |
523 | ||
524 | for (epid = 0; epid < max_epid; epid++) | |
525 | hw->ep_shm_info[epid].tx_status_work = 0; | |
526 | ||
527 | for (epid = 0; epid < max_epid; epid++) { | |
528 | if (epid == my_epid) | |
529 | continue; | |
530 | ||
531 | pstatus = fjes_hw_get_partner_ep_status(hw, epid); | |
532 | if (pstatus == EP_PARTNER_SHARED) { | |
533 | hw->ep_shm_info[epid].tx_status_work = | |
534 | hw->ep_shm_info[epid].tx.info->v1i.tx_status; | |
535 | ||
536 | if (hw->ep_shm_info[epid].tx_status_work == | |
537 | FJES_TX_DELAY_SEND_PENDING) { | |
538 | hw->ep_shm_info[epid].tx.info->v1i.tx_status = | |
539 | FJES_TX_DELAY_SEND_NONE; | |
540 | } | |
541 | } | |
542 | } | |
543 | ||
544 | for (epid = 0; epid < max_epid; epid++) { | |
545 | if (epid == my_epid) | |
546 | continue; | |
547 | ||
548 | pstatus = fjes_hw_get_partner_ep_status(hw, epid); | |
549 | if ((hw->ep_shm_info[epid].tx_status_work == | |
550 | FJES_TX_DELAY_SEND_PENDING) && | |
551 | (pstatus == EP_PARTNER_SHARED) && | |
552 | !(hw->ep_shm_info[epid].rx.info->v1i.rx_status)) { | |
553 | fjes_hw_raise_interrupt(hw, epid, | |
554 | REG_ICTL_MASK_RX_DATA); | |
555 | } | |
556 | } | |
557 | ||
558 | usleep_range(500, 1000); | |
559 | } | |
560 | ||
9acf51cb TI |
561 | static int fjes_tx_send(struct fjes_adapter *adapter, int dest, |
562 | void *data, size_t len) | |
563 | { | |
564 | int retval; | |
565 | ||
566 | retval = fjes_hw_epbuf_tx_pkt_send(&adapter->hw.ep_shm_info[dest].tx, | |
567 | data, len); | |
568 | if (retval) | |
569 | return retval; | |
570 | ||
571 | adapter->hw.ep_shm_info[dest].tx.info->v1i.tx_status = | |
572 | FJES_TX_DELAY_SEND_PENDING; | |
b772b9dc TI |
573 | if (!work_pending(&adapter->raise_intr_rxdata_task)) |
574 | queue_work(adapter->txrx_wq, | |
575 | &adapter->raise_intr_rxdata_task); | |
9acf51cb TI |
576 | |
577 | retval = 0; | |
578 | return retval; | |
579 | } | |
580 | ||
581 | static netdev_tx_t | |
582 | fjes_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
583 | { | |
584 | struct fjes_adapter *adapter = netdev_priv(netdev); | |
585 | struct fjes_hw *hw = &adapter->hw; | |
586 | ||
587 | int max_epid, my_epid, dest_epid; | |
588 | enum ep_partner_status pstatus; | |
589 | struct netdev_queue *cur_queue; | |
590 | char shortpkt[VLAN_ETH_HLEN]; | |
591 | bool is_multi, vlan; | |
592 | struct ethhdr *eth; | |
593 | u16 queue_no = 0; | |
594 | u16 vlan_id = 0; | |
595 | netdev_tx_t ret; | |
596 | char *data; | |
597 | int len; | |
598 | ||
599 | ret = NETDEV_TX_OK; | |
600 | is_multi = false; | |
601 | cur_queue = netdev_get_tx_queue(netdev, queue_no); | |
602 | ||
603 | eth = (struct ethhdr *)skb->data; | |
604 | my_epid = hw->my_epid; | |
605 | ||
606 | vlan = (vlan_get_tag(skb, &vlan_id) == 0) ? true : false; | |
607 | ||
608 | data = skb->data; | |
609 | len = skb->len; | |
610 | ||
611 | if (is_multicast_ether_addr(eth->h_dest)) { | |
612 | dest_epid = 0; | |
613 | max_epid = hw->max_epid; | |
614 | is_multi = true; | |
615 | } else if (is_local_ether_addr(eth->h_dest)) { | |
616 | dest_epid = eth->h_dest[ETH_ALEN - 1]; | |
617 | max_epid = dest_epid + 1; | |
618 | ||
619 | if ((eth->h_dest[0] == 0x02) && | |
620 | (0x00 == (eth->h_dest[1] | eth->h_dest[2] | | |
621 | eth->h_dest[3] | eth->h_dest[4])) && | |
622 | (dest_epid < hw->max_epid)) { | |
623 | ; | |
624 | } else { | |
625 | dest_epid = 0; | |
626 | max_epid = 0; | |
627 | ret = NETDEV_TX_OK; | |
628 | ||
629 | adapter->stats64.tx_packets += 1; | |
630 | hw->ep_shm_info[my_epid].net_stats.tx_packets += 1; | |
631 | adapter->stats64.tx_bytes += len; | |
632 | hw->ep_shm_info[my_epid].net_stats.tx_bytes += len; | |
633 | } | |
634 | } else { | |
635 | dest_epid = 0; | |
636 | max_epid = 0; | |
637 | ret = NETDEV_TX_OK; | |
638 | ||
639 | adapter->stats64.tx_packets += 1; | |
640 | hw->ep_shm_info[my_epid].net_stats.tx_packets += 1; | |
641 | adapter->stats64.tx_bytes += len; | |
642 | hw->ep_shm_info[my_epid].net_stats.tx_bytes += len; | |
643 | } | |
644 | ||
645 | for (; dest_epid < max_epid; dest_epid++) { | |
646 | if (my_epid == dest_epid) | |
647 | continue; | |
648 | ||
649 | pstatus = fjes_hw_get_partner_ep_status(hw, dest_epid); | |
650 | if (pstatus != EP_PARTNER_SHARED) { | |
651 | ret = NETDEV_TX_OK; | |
652 | } else if (!fjes_hw_check_epbuf_version( | |
653 | &adapter->hw.ep_shm_info[dest_epid].rx, 0)) { | |
654 | /* version is NOT 0 */ | |
655 | adapter->stats64.tx_carrier_errors += 1; | |
656 | hw->ep_shm_info[my_epid].net_stats | |
657 | .tx_carrier_errors += 1; | |
658 | ||
659 | ret = NETDEV_TX_OK; | |
660 | } else if (!fjes_hw_check_mtu( | |
661 | &adapter->hw.ep_shm_info[dest_epid].rx, | |
662 | netdev->mtu)) { | |
663 | adapter->stats64.tx_dropped += 1; | |
664 | hw->ep_shm_info[my_epid].net_stats.tx_dropped += 1; | |
665 | adapter->stats64.tx_errors += 1; | |
666 | hw->ep_shm_info[my_epid].net_stats.tx_errors += 1; | |
667 | ||
668 | ret = NETDEV_TX_OK; | |
669 | } else if (vlan && | |
670 | !fjes_hw_check_vlan_id( | |
671 | &adapter->hw.ep_shm_info[dest_epid].rx, | |
672 | vlan_id)) { | |
673 | ret = NETDEV_TX_OK; | |
674 | } else { | |
675 | if (len < VLAN_ETH_HLEN) { | |
676 | memset(shortpkt, 0, VLAN_ETH_HLEN); | |
677 | memcpy(shortpkt, skb->data, skb->len); | |
678 | len = VLAN_ETH_HLEN; | |
679 | data = shortpkt; | |
680 | } | |
681 | ||
682 | if (adapter->tx_retry_count == 0) { | |
683 | adapter->tx_start_jiffies = jiffies; | |
684 | adapter->tx_retry_count = 1; | |
685 | } else { | |
686 | adapter->tx_retry_count++; | |
687 | } | |
688 | ||
689 | if (fjes_tx_send(adapter, dest_epid, data, len)) { | |
690 | if (is_multi) { | |
691 | ret = NETDEV_TX_OK; | |
692 | } else if ( | |
693 | ((long)jiffies - | |
694 | (long)adapter->tx_start_jiffies) >= | |
695 | FJES_TX_RETRY_TIMEOUT) { | |
696 | adapter->stats64.tx_fifo_errors += 1; | |
697 | hw->ep_shm_info[my_epid].net_stats | |
698 | .tx_fifo_errors += 1; | |
699 | adapter->stats64.tx_errors += 1; | |
700 | hw->ep_shm_info[my_epid].net_stats | |
701 | .tx_errors += 1; | |
702 | ||
703 | ret = NETDEV_TX_OK; | |
704 | } else { | |
705 | netdev->trans_start = jiffies; | |
706 | netif_tx_stop_queue(cur_queue); | |
707 | ||
ac63b947 TI |
708 | if (!work_pending(&adapter->tx_stall_task)) |
709 | queue_work(adapter->txrx_wq, | |
710 | &adapter->tx_stall_task); | |
711 | ||
9acf51cb TI |
712 | ret = NETDEV_TX_BUSY; |
713 | } | |
714 | } else { | |
715 | if (!is_multi) { | |
716 | adapter->stats64.tx_packets += 1; | |
717 | hw->ep_shm_info[my_epid].net_stats | |
718 | .tx_packets += 1; | |
719 | adapter->stats64.tx_bytes += len; | |
720 | hw->ep_shm_info[my_epid].net_stats | |
721 | .tx_bytes += len; | |
722 | } | |
723 | ||
724 | adapter->tx_retry_count = 0; | |
725 | ret = NETDEV_TX_OK; | |
726 | } | |
727 | } | |
728 | } | |
729 | ||
730 | if (ret == NETDEV_TX_OK) { | |
731 | dev_kfree_skb(skb); | |
732 | if (is_multi) { | |
733 | adapter->stats64.tx_packets += 1; | |
734 | hw->ep_shm_info[my_epid].net_stats.tx_packets += 1; | |
735 | adapter->stats64.tx_bytes += 1; | |
736 | hw->ep_shm_info[my_epid].net_stats.tx_bytes += len; | |
737 | } | |
738 | } | |
739 | ||
740 | return ret; | |
741 | } | |
742 | ||
4393e767 TI |
743 | static void fjes_tx_retry(struct net_device *netdev) |
744 | { | |
745 | struct netdev_queue *queue = netdev_get_tx_queue(netdev, 0); | |
746 | ||
747 | netif_tx_wake_queue(queue); | |
748 | } | |
749 | ||
879bc9a3 TI |
750 | static struct rtnl_link_stats64 * |
751 | fjes_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats) | |
752 | { | |
753 | struct fjes_adapter *adapter = netdev_priv(netdev); | |
754 | ||
755 | memcpy(stats, &adapter->stats64, sizeof(struct rtnl_link_stats64)); | |
756 | ||
757 | return stats; | |
758 | } | |
759 | ||
b9e23a67 TI |
760 | static int fjes_change_mtu(struct net_device *netdev, int new_mtu) |
761 | { | |
762 | bool running = netif_running(netdev); | |
763 | int ret = 0; | |
764 | int idx; | |
765 | ||
766 | for (idx = 0; fjes_support_mtu[idx] != 0; idx++) { | |
767 | if (new_mtu <= fjes_support_mtu[idx]) { | |
768 | new_mtu = fjes_support_mtu[idx]; | |
769 | if (new_mtu == netdev->mtu) | |
770 | return 0; | |
771 | ||
772 | if (running) | |
773 | fjes_close(netdev); | |
774 | ||
775 | netdev->mtu = new_mtu; | |
776 | ||
777 | if (running) | |
778 | ret = fjes_open(netdev); | |
779 | ||
780 | return ret; | |
781 | } | |
782 | } | |
783 | ||
784 | return -EINVAL; | |
785 | } | |
786 | ||
3e3fedda TI |
787 | static int fjes_vlan_rx_add_vid(struct net_device *netdev, |
788 | __be16 proto, u16 vid) | |
789 | { | |
790 | struct fjes_adapter *adapter = netdev_priv(netdev); | |
791 | bool ret = true; | |
792 | int epid; | |
793 | ||
794 | for (epid = 0; epid < adapter->hw.max_epid; epid++) { | |
795 | if (epid == adapter->hw.my_epid) | |
796 | continue; | |
797 | ||
798 | if (!fjes_hw_check_vlan_id( | |
799 | &adapter->hw.ep_shm_info[epid].tx, vid)) | |
800 | ret = fjes_hw_set_vlan_id( | |
801 | &adapter->hw.ep_shm_info[epid].tx, vid); | |
802 | } | |
803 | ||
804 | return ret ? 0 : -ENOSPC; | |
805 | } | |
806 | ||
807 | static int fjes_vlan_rx_kill_vid(struct net_device *netdev, | |
808 | __be16 proto, u16 vid) | |
809 | { | |
810 | struct fjes_adapter *adapter = netdev_priv(netdev); | |
811 | int epid; | |
812 | ||
813 | for (epid = 0; epid < adapter->hw.max_epid; epid++) { | |
814 | if (epid == adapter->hw.my_epid) | |
815 | continue; | |
816 | ||
817 | fjes_hw_del_vlan_id(&adapter->hw.ep_shm_info[epid].tx, vid); | |
818 | } | |
819 | ||
820 | return 0; | |
821 | } | |
822 | ||
cb79eaae TI |
823 | static void fjes_txrx_stop_req_irq(struct fjes_adapter *adapter, |
824 | int src_epid) | |
825 | { | |
826 | struct fjes_hw *hw = &adapter->hw; | |
827 | enum ep_partner_status status; | |
828 | ||
829 | status = fjes_hw_get_partner_ep_status(hw, src_epid); | |
830 | switch (status) { | |
831 | case EP_PARTNER_UNSHARE: | |
832 | case EP_PARTNER_COMPLETE: | |
833 | default: | |
834 | break; | |
835 | case EP_PARTNER_WAITING: | |
836 | if (src_epid < hw->my_epid) { | |
837 | hw->ep_shm_info[src_epid].tx.info->v1i.rx_status |= | |
838 | FJES_RX_STOP_REQ_DONE; | |
839 | ||
840 | clear_bit(src_epid, &hw->txrx_stop_req_bit); | |
841 | set_bit(src_epid, &adapter->unshare_watch_bitmask); | |
842 | ||
843 | if (!work_pending(&adapter->unshare_watch_task)) | |
844 | queue_work(adapter->control_wq, | |
845 | &adapter->unshare_watch_task); | |
846 | } | |
847 | break; | |
848 | case EP_PARTNER_SHARED: | |
849 | if (hw->ep_shm_info[src_epid].rx.info->v1i.rx_status & | |
850 | FJES_RX_STOP_REQ_REQUEST) { | |
851 | set_bit(src_epid, &hw->epstop_req_bit); | |
852 | if (!work_pending(&hw->epstop_task)) | |
853 | queue_work(adapter->control_wq, | |
854 | &hw->epstop_task); | |
855 | } | |
856 | break; | |
857 | } | |
858 | } | |
859 | ||
860 | static void fjes_stop_req_irq(struct fjes_adapter *adapter, int src_epid) | |
861 | { | |
862 | struct fjes_hw *hw = &adapter->hw; | |
863 | enum ep_partner_status status; | |
864 | ||
865 | set_bit(src_epid, &hw->hw_info.buffer_unshare_reserve_bit); | |
866 | ||
867 | status = fjes_hw_get_partner_ep_status(hw, src_epid); | |
868 | switch (status) { | |
869 | case EP_PARTNER_WAITING: | |
870 | hw->ep_shm_info[src_epid].tx.info->v1i.rx_status |= | |
871 | FJES_RX_STOP_REQ_DONE; | |
872 | clear_bit(src_epid, &hw->txrx_stop_req_bit); | |
873 | /* fall through */ | |
874 | case EP_PARTNER_UNSHARE: | |
875 | case EP_PARTNER_COMPLETE: | |
876 | default: | |
877 | set_bit(src_epid, &adapter->unshare_watch_bitmask); | |
878 | if (!work_pending(&adapter->unshare_watch_task)) | |
879 | queue_work(adapter->control_wq, | |
880 | &adapter->unshare_watch_task); | |
881 | break; | |
882 | case EP_PARTNER_SHARED: | |
883 | set_bit(src_epid, &hw->epstop_req_bit); | |
884 | ||
885 | if (!work_pending(&hw->epstop_task)) | |
886 | queue_work(adapter->control_wq, &hw->epstop_task); | |
887 | break; | |
888 | } | |
889 | } | |
890 | ||
785f28e0 TI |
891 | static void fjes_update_zone_irq(struct fjes_adapter *adapter, |
892 | int src_epid) | |
893 | { | |
894 | struct fjes_hw *hw = &adapter->hw; | |
895 | ||
896 | if (!work_pending(&hw->update_zone_task)) | |
897 | queue_work(adapter->control_wq, &hw->update_zone_task); | |
898 | } | |
899 | ||
e5d486dc TI |
900 | static irqreturn_t fjes_intr(int irq, void *data) |
901 | { | |
902 | struct fjes_adapter *adapter = data; | |
903 | struct fjes_hw *hw = &adapter->hw; | |
904 | irqreturn_t ret; | |
905 | u32 icr; | |
906 | ||
907 | icr = fjes_hw_capture_interrupt_status(hw); | |
908 | ||
26585930 TI |
909 | if (icr & REG_IS_MASK_IS_ASSERT) { |
910 | if (icr & REG_ICTL_MASK_RX_DATA) | |
911 | fjes_rx_irq(adapter, icr & REG_IS_MASK_EPID); | |
912 | ||
cb79eaae TI |
913 | if (icr & REG_ICTL_MASK_DEV_STOP_REQ) |
914 | fjes_stop_req_irq(adapter, icr & REG_IS_MASK_EPID); | |
915 | ||
916 | if (icr & REG_ICTL_MASK_TXRX_STOP_REQ) | |
917 | fjes_txrx_stop_req_irq(adapter, icr & REG_IS_MASK_EPID); | |
918 | ||
919 | if (icr & REG_ICTL_MASK_TXRX_STOP_DONE) | |
920 | fjes_hw_set_irqmask(hw, | |
921 | REG_ICTL_MASK_TXRX_STOP_DONE, true); | |
922 | ||
785f28e0 TI |
923 | if (icr & REG_ICTL_MASK_INFO_UPDATE) |
924 | fjes_update_zone_irq(adapter, icr & REG_IS_MASK_EPID); | |
925 | ||
e5d486dc | 926 | ret = IRQ_HANDLED; |
26585930 | 927 | } else { |
e5d486dc | 928 | ret = IRQ_NONE; |
26585930 | 929 | } |
e5d486dc TI |
930 | |
931 | return ret; | |
932 | } | |
933 | ||
26585930 TI |
934 | static int fjes_rxframe_search_exist(struct fjes_adapter *adapter, |
935 | int start_epid) | |
936 | { | |
937 | struct fjes_hw *hw = &adapter->hw; | |
938 | enum ep_partner_status pstatus; | |
939 | int max_epid, cur_epid; | |
940 | int i; | |
941 | ||
942 | max_epid = hw->max_epid; | |
943 | start_epid = (start_epid + 1 + max_epid) % max_epid; | |
944 | ||
945 | for (i = 0; i < max_epid; i++) { | |
946 | cur_epid = (start_epid + i) % max_epid; | |
947 | if (cur_epid == hw->my_epid) | |
948 | continue; | |
949 | ||
950 | pstatus = fjes_hw_get_partner_ep_status(hw, cur_epid); | |
951 | if (pstatus == EP_PARTNER_SHARED) { | |
952 | if (!fjes_hw_epbuf_rx_is_empty( | |
953 | &hw->ep_shm_info[cur_epid].rx)) | |
954 | return cur_epid; | |
955 | } | |
956 | } | |
957 | return -1; | |
958 | } | |
959 | ||
960 | static void *fjes_rxframe_get(struct fjes_adapter *adapter, size_t *psize, | |
961 | int *cur_epid) | |
962 | { | |
963 | void *frame; | |
964 | ||
965 | *cur_epid = fjes_rxframe_search_exist(adapter, *cur_epid); | |
966 | if (*cur_epid < 0) | |
967 | return NULL; | |
968 | ||
969 | frame = | |
970 | fjes_hw_epbuf_rx_curpkt_get_addr( | |
971 | &adapter->hw.ep_shm_info[*cur_epid].rx, psize); | |
972 | ||
973 | return frame; | |
974 | } | |
975 | ||
976 | static void fjes_rxframe_release(struct fjes_adapter *adapter, int cur_epid) | |
977 | { | |
978 | fjes_hw_epbuf_rx_curpkt_drop(&adapter->hw.ep_shm_info[cur_epid].rx); | |
979 | } | |
980 | ||
981 | static void fjes_rx_irq(struct fjes_adapter *adapter, int src_epid) | |
982 | { | |
983 | struct fjes_hw *hw = &adapter->hw; | |
984 | ||
985 | fjes_hw_set_irqmask(hw, REG_ICTL_MASK_RX_DATA, true); | |
986 | ||
987 | adapter->unset_rx_last = true; | |
988 | napi_schedule(&adapter->napi); | |
989 | } | |
990 | ||
991 | static int fjes_poll(struct napi_struct *napi, int budget) | |
992 | { | |
993 | struct fjes_adapter *adapter = | |
994 | container_of(napi, struct fjes_adapter, napi); | |
995 | struct net_device *netdev = napi->dev; | |
996 | struct fjes_hw *hw = &adapter->hw; | |
997 | struct sk_buff *skb; | |
998 | int work_done = 0; | |
999 | int cur_epid = 0; | |
1000 | int epidx; | |
1001 | size_t frame_len; | |
1002 | void *frame; | |
1003 | ||
1004 | for (epidx = 0; epidx < hw->max_epid; epidx++) { | |
1005 | if (epidx == hw->my_epid) | |
1006 | continue; | |
1007 | ||
1008 | adapter->hw.ep_shm_info[epidx].tx.info->v1i.rx_status |= | |
1009 | FJES_RX_POLL_WORK; | |
1010 | } | |
1011 | ||
1012 | while (work_done < budget) { | |
1013 | prefetch(&adapter->hw); | |
1014 | frame = fjes_rxframe_get(adapter, &frame_len, &cur_epid); | |
1015 | ||
1016 | if (frame) { | |
1017 | skb = napi_alloc_skb(napi, frame_len); | |
1018 | if (!skb) { | |
1019 | adapter->stats64.rx_dropped += 1; | |
1020 | hw->ep_shm_info[cur_epid].net_stats | |
1021 | .rx_dropped += 1; | |
1022 | adapter->stats64.rx_errors += 1; | |
1023 | hw->ep_shm_info[cur_epid].net_stats | |
1024 | .rx_errors += 1; | |
1025 | } else { | |
1026 | memcpy(skb_put(skb, frame_len), | |
1027 | frame, frame_len); | |
1028 | skb->protocol = eth_type_trans(skb, netdev); | |
1029 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1030 | ||
1031 | netif_receive_skb(skb); | |
1032 | ||
1033 | work_done++; | |
1034 | ||
1035 | adapter->stats64.rx_packets += 1; | |
1036 | hw->ep_shm_info[cur_epid].net_stats | |
1037 | .rx_packets += 1; | |
1038 | adapter->stats64.rx_bytes += frame_len; | |
1039 | hw->ep_shm_info[cur_epid].net_stats | |
1040 | .rx_bytes += frame_len; | |
1041 | ||
1042 | if (is_multicast_ether_addr( | |
1043 | ((struct ethhdr *)frame)->h_dest)) { | |
1044 | adapter->stats64.multicast += 1; | |
1045 | hw->ep_shm_info[cur_epid].net_stats | |
1046 | .multicast += 1; | |
1047 | } | |
1048 | } | |
1049 | ||
1050 | fjes_rxframe_release(adapter, cur_epid); | |
1051 | adapter->unset_rx_last = true; | |
1052 | } else { | |
1053 | break; | |
1054 | } | |
1055 | } | |
1056 | ||
1057 | if (work_done < budget) { | |
1058 | napi_complete(napi); | |
1059 | ||
1060 | if (adapter->unset_rx_last) { | |
1061 | adapter->rx_last_jiffies = jiffies; | |
1062 | adapter->unset_rx_last = false; | |
1063 | } | |
1064 | ||
1065 | if (((long)jiffies - (long)adapter->rx_last_jiffies) < 3) { | |
1066 | napi_reschedule(napi); | |
1067 | } else { | |
1068 | for (epidx = 0; epidx < hw->max_epid; epidx++) { | |
1069 | if (epidx == hw->my_epid) | |
1070 | continue; | |
1071 | adapter->hw.ep_shm_info[epidx] | |
1072 | .tx.info->v1i.rx_status &= | |
1073 | ~FJES_RX_POLL_WORK; | |
1074 | } | |
1075 | ||
1076 | fjes_hw_set_irqmask(hw, REG_ICTL_MASK_RX_DATA, false); | |
1077 | } | |
1078 | } | |
1079 | ||
1080 | return work_done; | |
1081 | } | |
1082 | ||
658d439b TI |
1083 | /* fjes_probe - Device Initialization Routine */ |
1084 | static int fjes_probe(struct platform_device *plat_dev) | |
1085 | { | |
2fcbca68 TI |
1086 | struct fjes_adapter *adapter; |
1087 | struct net_device *netdev; | |
1088 | struct resource *res; | |
1089 | struct fjes_hw *hw; | |
1090 | int err; | |
1091 | ||
1092 | err = -ENOMEM; | |
1093 | netdev = alloc_netdev_mq(sizeof(struct fjes_adapter), "es%d", | |
1094 | NET_NAME_UNKNOWN, fjes_netdev_setup, | |
1095 | FJES_MAX_QUEUES); | |
1096 | ||
1097 | if (!netdev) | |
1098 | goto err_out; | |
1099 | ||
1100 | SET_NETDEV_DEV(netdev, &plat_dev->dev); | |
1101 | ||
1102 | dev_set_drvdata(&plat_dev->dev, netdev); | |
1103 | adapter = netdev_priv(netdev); | |
1104 | adapter->netdev = netdev; | |
1105 | adapter->plat_dev = plat_dev; | |
1106 | hw = &adapter->hw; | |
1107 | hw->back = adapter; | |
1108 | ||
1109 | /* setup the private structure */ | |
1110 | err = fjes_sw_init(adapter); | |
1111 | if (err) | |
1112 | goto err_free_netdev; | |
1113 | ||
ff5b4210 | 1114 | INIT_WORK(&adapter->force_close_task, fjes_force_close_task); |
2fcbca68 TI |
1115 | adapter->force_reset = false; |
1116 | adapter->open_guard = false; | |
1117 | ||
b772b9dc | 1118 | adapter->txrx_wq = create_workqueue(DRV_NAME "/txrx"); |
8edb62a8 | 1119 | adapter->control_wq = create_workqueue(DRV_NAME "/control"); |
b772b9dc | 1120 | |
ac63b947 | 1121 | INIT_WORK(&adapter->tx_stall_task, fjes_tx_stall_task); |
b772b9dc TI |
1122 | INIT_WORK(&adapter->raise_intr_rxdata_task, |
1123 | fjes_raise_intr_rxdata_task); | |
8fc4cadb TI |
1124 | INIT_WORK(&adapter->unshare_watch_task, fjes_watch_unshare_task); |
1125 | adapter->unshare_watch_bitmask = 0; | |
b772b9dc | 1126 | |
8edb62a8 TI |
1127 | INIT_DELAYED_WORK(&adapter->interrupt_watch_task, fjes_irq_watch_task); |
1128 | adapter->interrupt_watch_enable = false; | |
1129 | ||
2fcbca68 TI |
1130 | res = platform_get_resource(plat_dev, IORESOURCE_MEM, 0); |
1131 | hw->hw_res.start = res->start; | |
1132 | hw->hw_res.size = res->end - res->start + 1; | |
1133 | hw->hw_res.irq = platform_get_irq(plat_dev, 0); | |
1134 | err = fjes_hw_init(&adapter->hw); | |
1135 | if (err) | |
1136 | goto err_free_netdev; | |
1137 | ||
1138 | /* setup MAC address (02:00:00:00:00:[epid])*/ | |
1139 | netdev->dev_addr[0] = 2; | |
1140 | netdev->dev_addr[1] = 0; | |
1141 | netdev->dev_addr[2] = 0; | |
1142 | netdev->dev_addr[3] = 0; | |
1143 | netdev->dev_addr[4] = 0; | |
1144 | netdev->dev_addr[5] = hw->my_epid; /* EPID */ | |
1145 | ||
1146 | err = register_netdev(netdev); | |
1147 | if (err) | |
1148 | goto err_hw_exit; | |
1149 | ||
1150 | netif_carrier_off(netdev); | |
1151 | ||
658d439b | 1152 | return 0; |
2fcbca68 TI |
1153 | |
1154 | err_hw_exit: | |
1155 | fjes_hw_exit(&adapter->hw); | |
1156 | err_free_netdev: | |
1157 | free_netdev(netdev); | |
1158 | err_out: | |
1159 | return err; | |
658d439b TI |
1160 | } |
1161 | ||
1162 | /* fjes_remove - Device Removal Routine */ | |
1163 | static int fjes_remove(struct platform_device *plat_dev) | |
1164 | { | |
2fcbca68 TI |
1165 | struct net_device *netdev = dev_get_drvdata(&plat_dev->dev); |
1166 | struct fjes_adapter *adapter = netdev_priv(netdev); | |
1167 | struct fjes_hw *hw = &adapter->hw; | |
1168 | ||
8edb62a8 | 1169 | cancel_delayed_work_sync(&adapter->interrupt_watch_task); |
8fc4cadb | 1170 | cancel_work_sync(&adapter->unshare_watch_task); |
b772b9dc | 1171 | cancel_work_sync(&adapter->raise_intr_rxdata_task); |
ac63b947 | 1172 | cancel_work_sync(&adapter->tx_stall_task); |
8edb62a8 TI |
1173 | if (adapter->control_wq) |
1174 | destroy_workqueue(adapter->control_wq); | |
b772b9dc TI |
1175 | if (adapter->txrx_wq) |
1176 | destroy_workqueue(adapter->txrx_wq); | |
1177 | ||
2fcbca68 TI |
1178 | unregister_netdev(netdev); |
1179 | ||
1180 | fjes_hw_exit(hw); | |
1181 | ||
26585930 TI |
1182 | netif_napi_del(&adapter->napi); |
1183 | ||
2fcbca68 TI |
1184 | free_netdev(netdev); |
1185 | ||
658d439b TI |
1186 | return 0; |
1187 | } | |
1188 | ||
2fcbca68 TI |
1189 | static int fjes_sw_init(struct fjes_adapter *adapter) |
1190 | { | |
26585930 TI |
1191 | struct net_device *netdev = adapter->netdev; |
1192 | ||
1193 | netif_napi_add(netdev, &adapter->napi, fjes_poll, 64); | |
1194 | ||
2fcbca68 TI |
1195 | return 0; |
1196 | } | |
1197 | ||
1198 | /* fjes_netdev_setup - netdevice initialization routine */ | |
1199 | static void fjes_netdev_setup(struct net_device *netdev) | |
1200 | { | |
1201 | ether_setup(netdev); | |
1202 | ||
1203 | netdev->watchdog_timeo = FJES_TX_RETRY_INTERVAL; | |
1204 | netdev->netdev_ops = &fjes_netdev_ops; | |
786eec27 | 1205 | fjes_set_ethtool_ops(netdev); |
2fcbca68 TI |
1206 | netdev->mtu = fjes_support_mtu[0]; |
1207 | netdev->flags |= IFF_BROADCAST; | |
1208 | netdev->features |= NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_FILTER; | |
1209 | } | |
1210 | ||
8edb62a8 TI |
1211 | static void fjes_irq_watch_task(struct work_struct *work) |
1212 | { | |
1213 | struct fjes_adapter *adapter = container_of(to_delayed_work(work), | |
1214 | struct fjes_adapter, interrupt_watch_task); | |
1215 | ||
1216 | local_irq_disable(); | |
1217 | fjes_intr(adapter->hw.hw_res.irq, adapter); | |
1218 | local_irq_enable(); | |
1219 | ||
1220 | if (fjes_rxframe_search_exist(adapter, 0) >= 0) | |
1221 | napi_schedule(&adapter->napi); | |
1222 | ||
1223 | if (adapter->interrupt_watch_enable) { | |
1224 | if (!delayed_work_pending(&adapter->interrupt_watch_task)) | |
1225 | queue_delayed_work(adapter->control_wq, | |
1226 | &adapter->interrupt_watch_task, | |
1227 | FJES_IRQ_WATCH_DELAY); | |
1228 | } | |
1229 | } | |
1230 | ||
8fc4cadb TI |
1231 | static void fjes_watch_unshare_task(struct work_struct *work) |
1232 | { | |
1233 | struct fjes_adapter *adapter = | |
1234 | container_of(work, struct fjes_adapter, unshare_watch_task); | |
1235 | ||
1236 | struct net_device *netdev = adapter->netdev; | |
1237 | struct fjes_hw *hw = &adapter->hw; | |
1238 | ||
1239 | int unshare_watch, unshare_reserve; | |
1240 | int max_epid, my_epid, epidx; | |
1241 | int stop_req, stop_req_done; | |
1242 | ulong unshare_watch_bitmask; | |
1243 | int wait_time = 0; | |
1244 | int is_shared; | |
1245 | int ret; | |
1246 | ||
1247 | my_epid = hw->my_epid; | |
1248 | max_epid = hw->max_epid; | |
1249 | ||
1250 | unshare_watch_bitmask = adapter->unshare_watch_bitmask; | |
1251 | adapter->unshare_watch_bitmask = 0; | |
1252 | ||
1253 | while ((unshare_watch_bitmask || hw->txrx_stop_req_bit) && | |
1254 | (wait_time < 3000)) { | |
1255 | for (epidx = 0; epidx < hw->max_epid; epidx++) { | |
1256 | if (epidx == hw->my_epid) | |
1257 | continue; | |
1258 | ||
1259 | is_shared = fjes_hw_epid_is_shared(hw->hw_info.share, | |
1260 | epidx); | |
1261 | ||
1262 | stop_req = test_bit(epidx, &hw->txrx_stop_req_bit); | |
1263 | ||
1264 | stop_req_done = hw->ep_shm_info[epidx].rx.info->v1i.rx_status & | |
1265 | FJES_RX_STOP_REQ_DONE; | |
1266 | ||
1267 | unshare_watch = test_bit(epidx, &unshare_watch_bitmask); | |
1268 | ||
1269 | unshare_reserve = test_bit(epidx, | |
1270 | &hw->hw_info.buffer_unshare_reserve_bit); | |
1271 | ||
1272 | if ((!stop_req || | |
1273 | (is_shared && (!is_shared || !stop_req_done))) && | |
1274 | (is_shared || !unshare_watch || !unshare_reserve)) | |
1275 | continue; | |
1276 | ||
1277 | mutex_lock(&hw->hw_info.lock); | |
1278 | ret = fjes_hw_unregister_buff_addr(hw, epidx); | |
1279 | switch (ret) { | |
1280 | case 0: | |
1281 | break; | |
1282 | case -ENOMSG: | |
1283 | case -EBUSY: | |
1284 | default: | |
1285 | if (!work_pending( | |
1286 | &adapter->force_close_task)) { | |
1287 | adapter->force_reset = true; | |
1288 | schedule_work( | |
1289 | &adapter->force_close_task); | |
1290 | } | |
1291 | break; | |
1292 | } | |
1293 | mutex_unlock(&hw->hw_info.lock); | |
1294 | ||
1295 | fjes_hw_setup_epbuf(&hw->ep_shm_info[epidx].tx, | |
1296 | netdev->dev_addr, netdev->mtu); | |
1297 | ||
1298 | clear_bit(epidx, &hw->txrx_stop_req_bit); | |
1299 | clear_bit(epidx, &unshare_watch_bitmask); | |
1300 | clear_bit(epidx, | |
1301 | &hw->hw_info.buffer_unshare_reserve_bit); | |
1302 | } | |
1303 | ||
1304 | msleep(100); | |
1305 | wait_time += 100; | |
1306 | } | |
1307 | ||
1308 | if (hw->hw_info.buffer_unshare_reserve_bit) { | |
1309 | for (epidx = 0; epidx < hw->max_epid; epidx++) { | |
1310 | if (epidx == hw->my_epid) | |
1311 | continue; | |
1312 | ||
1313 | if (test_bit(epidx, | |
1314 | &hw->hw_info.buffer_unshare_reserve_bit)) { | |
1315 | mutex_lock(&hw->hw_info.lock); | |
1316 | ||
1317 | ret = fjes_hw_unregister_buff_addr(hw, epidx); | |
1318 | switch (ret) { | |
1319 | case 0: | |
1320 | break; | |
1321 | case -ENOMSG: | |
1322 | case -EBUSY: | |
1323 | default: | |
1324 | if (!work_pending( | |
1325 | &adapter->force_close_task)) { | |
1326 | adapter->force_reset = true; | |
1327 | schedule_work( | |
1328 | &adapter->force_close_task); | |
1329 | } | |
1330 | break; | |
1331 | } | |
1332 | mutex_unlock(&hw->hw_info.lock); | |
1333 | ||
1334 | fjes_hw_setup_epbuf( | |
1335 | &hw->ep_shm_info[epidx].tx, | |
1336 | netdev->dev_addr, netdev->mtu); | |
1337 | ||
1338 | clear_bit(epidx, &hw->txrx_stop_req_bit); | |
1339 | clear_bit(epidx, &unshare_watch_bitmask); | |
1340 | clear_bit(epidx, &hw->hw_info.buffer_unshare_reserve_bit); | |
1341 | } | |
1342 | ||
1343 | if (test_bit(epidx, &unshare_watch_bitmask)) { | |
1344 | hw->ep_shm_info[epidx].tx.info->v1i.rx_status &= | |
1345 | ~FJES_RX_STOP_REQ_DONE; | |
1346 | } | |
1347 | } | |
1348 | } | |
1349 | } | |
1350 | ||
658d439b TI |
1351 | /* fjes_init_module - Driver Registration Routine */ |
1352 | static int __init fjes_init_module(void) | |
1353 | { | |
1354 | int result; | |
1355 | ||
1356 | pr_info("%s - version %s - %s\n", | |
1357 | fjes_driver_string, fjes_driver_version, fjes_copyright); | |
1358 | ||
1359 | result = platform_driver_register(&fjes_driver); | |
1360 | if (result < 0) | |
1361 | return result; | |
1362 | ||
1363 | result = acpi_bus_register_driver(&fjes_acpi_driver); | |
1364 | if (result < 0) | |
1365 | goto fail_acpi_driver; | |
1366 | ||
1367 | return 0; | |
1368 | ||
1369 | fail_acpi_driver: | |
1370 | platform_driver_unregister(&fjes_driver); | |
1371 | return result; | |
1372 | } | |
1373 | ||
1374 | module_init(fjes_init_module); | |
1375 | ||
1376 | /* fjes_exit_module - Driver Exit Cleanup Routine */ | |
1377 | static void __exit fjes_exit_module(void) | |
1378 | { | |
1379 | acpi_bus_unregister_driver(&fjes_acpi_driver); | |
1380 | platform_driver_unregister(&fjes_driver); | |
1381 | } | |
1382 | ||
1383 | module_exit(fjes_exit_module); |