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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 | |
8f180fad | 32 | #define MIN 1 |
658d439b TI |
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; | |
bd5a2569 | 293 | unsigned long flags; |
e5d486dc TI |
294 | int epidx; |
295 | ||
296 | netif_tx_stop_all_queues(netdev); | |
297 | netif_carrier_off(netdev); | |
298 | ||
299 | fjes_hw_raise_epstop(hw); | |
300 | ||
26585930 TI |
301 | napi_disable(&adapter->napi); |
302 | ||
bd5a2569 | 303 | spin_lock_irqsave(&hw->rx_status_lock, flags); |
e5d486dc TI |
304 | for (epidx = 0; epidx < hw->max_epid; epidx++) { |
305 | if (epidx == hw->my_epid) | |
306 | continue; | |
307 | ||
bd5a2569 TI |
308 | if (fjes_hw_get_partner_ep_status(hw, epidx) == |
309 | EP_PARTNER_SHARED) | |
310 | adapter->hw.ep_shm_info[epidx] | |
311 | .tx.info->v1i.rx_status &= | |
312 | ~FJES_RX_POLL_WORK; | |
e5d486dc | 313 | } |
bd5a2569 | 314 | spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
e5d486dc TI |
315 | |
316 | fjes_free_irq(adapter); | |
317 | ||
8edb62a8 | 318 | cancel_delayed_work_sync(&adapter->interrupt_watch_task); |
8fc4cadb TI |
319 | cancel_work_sync(&adapter->unshare_watch_task); |
320 | adapter->unshare_watch_bitmask = 0; | |
b772b9dc | 321 | cancel_work_sync(&adapter->raise_intr_rxdata_task); |
ac63b947 | 322 | cancel_work_sync(&adapter->tx_stall_task); |
b772b9dc | 323 | |
785f28e0 | 324 | cancel_work_sync(&hw->update_zone_task); |
b5a9152d | 325 | cancel_work_sync(&hw->epstop_task); |
785f28e0 | 326 | |
e5d486dc TI |
327 | fjes_hw_wait_epstop(hw); |
328 | ||
329 | fjes_free_resources(adapter); | |
330 | ||
331 | return 0; | |
332 | } | |
333 | ||
334 | static int fjes_setup_resources(struct fjes_adapter *adapter) | |
335 | { | |
336 | struct net_device *netdev = adapter->netdev; | |
337 | struct ep_share_mem_info *buf_pair; | |
338 | struct fjes_hw *hw = &adapter->hw; | |
bd5a2569 | 339 | unsigned long flags; |
e5d486dc TI |
340 | int result; |
341 | int epidx; | |
342 | ||
343 | mutex_lock(&hw->hw_info.lock); | |
344 | result = fjes_hw_request_info(hw); | |
345 | switch (result) { | |
346 | case 0: | |
347 | for (epidx = 0; epidx < hw->max_epid; epidx++) { | |
348 | hw->ep_shm_info[epidx].es_status = | |
349 | hw->hw_info.res_buf->info.info[epidx].es_status; | |
350 | hw->ep_shm_info[epidx].zone = | |
351 | hw->hw_info.res_buf->info.info[epidx].zone; | |
352 | } | |
353 | break; | |
354 | default: | |
355 | case -ENOMSG: | |
356 | case -EBUSY: | |
357 | adapter->force_reset = true; | |
358 | ||
359 | mutex_unlock(&hw->hw_info.lock); | |
360 | return result; | |
361 | } | |
362 | mutex_unlock(&hw->hw_info.lock); | |
363 | ||
364 | for (epidx = 0; epidx < (hw->max_epid); epidx++) { | |
365 | if ((epidx != hw->my_epid) && | |
366 | (hw->ep_shm_info[epidx].es_status == | |
367 | FJES_ZONING_STATUS_ENABLE)) { | |
368 | fjes_hw_raise_interrupt(hw, epidx, | |
369 | REG_ICTL_MASK_INFO_UPDATE); | |
370 | } | |
371 | } | |
372 | ||
373 | msleep(FJES_OPEN_ZONE_UPDATE_WAIT * hw->max_epid); | |
374 | ||
375 | for (epidx = 0; epidx < (hw->max_epid); epidx++) { | |
376 | if (epidx == hw->my_epid) | |
377 | continue; | |
378 | ||
379 | buf_pair = &hw->ep_shm_info[epidx]; | |
380 | ||
bd5a2569 | 381 | spin_lock_irqsave(&hw->rx_status_lock, flags); |
e5d486dc TI |
382 | fjes_hw_setup_epbuf(&buf_pair->tx, netdev->dev_addr, |
383 | netdev->mtu); | |
bd5a2569 | 384 | spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
e5d486dc TI |
385 | |
386 | if (fjes_hw_epid_is_same_zone(hw, epidx)) { | |
387 | mutex_lock(&hw->hw_info.lock); | |
388 | result = | |
389 | fjes_hw_register_buff_addr(hw, epidx, buf_pair); | |
390 | mutex_unlock(&hw->hw_info.lock); | |
391 | ||
392 | switch (result) { | |
393 | case 0: | |
394 | break; | |
395 | case -ENOMSG: | |
396 | case -EBUSY: | |
397 | default: | |
398 | adapter->force_reset = true; | |
399 | return result; | |
400 | } | |
401 | } | |
402 | } | |
403 | ||
404 | return 0; | |
405 | } | |
406 | ||
407 | static void fjes_free_resources(struct fjes_adapter *adapter) | |
408 | { | |
409 | struct net_device *netdev = adapter->netdev; | |
410 | struct fjes_device_command_param param; | |
411 | struct ep_share_mem_info *buf_pair; | |
412 | struct fjes_hw *hw = &adapter->hw; | |
413 | bool reset_flag = false; | |
bd5a2569 | 414 | unsigned long flags; |
e5d486dc TI |
415 | int result; |
416 | int epidx; | |
417 | ||
418 | for (epidx = 0; epidx < hw->max_epid; epidx++) { | |
419 | if (epidx == hw->my_epid) | |
420 | continue; | |
421 | ||
422 | mutex_lock(&hw->hw_info.lock); | |
423 | result = fjes_hw_unregister_buff_addr(hw, epidx); | |
424 | mutex_unlock(&hw->hw_info.lock); | |
425 | ||
426 | if (result) | |
427 | reset_flag = true; | |
428 | ||
429 | buf_pair = &hw->ep_shm_info[epidx]; | |
430 | ||
bd5a2569 | 431 | spin_lock_irqsave(&hw->rx_status_lock, flags); |
e5d486dc TI |
432 | fjes_hw_setup_epbuf(&buf_pair->tx, |
433 | netdev->dev_addr, netdev->mtu); | |
bd5a2569 | 434 | spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
e5d486dc TI |
435 | |
436 | clear_bit(epidx, &hw->txrx_stop_req_bit); | |
437 | } | |
438 | ||
439 | if (reset_flag || adapter->force_reset) { | |
440 | result = fjes_hw_reset(hw); | |
441 | ||
442 | adapter->force_reset = false; | |
443 | ||
444 | if (result) | |
445 | adapter->open_guard = true; | |
446 | ||
447 | hw->hw_info.buffer_share_bit = 0; | |
448 | ||
449 | memset((void *)¶m, 0, sizeof(param)); | |
450 | ||
451 | param.req_len = hw->hw_info.req_buf_size; | |
452 | param.req_start = __pa(hw->hw_info.req_buf); | |
453 | param.res_len = hw->hw_info.res_buf_size; | |
454 | param.res_start = __pa(hw->hw_info.res_buf); | |
455 | param.share_start = __pa(hw->hw_info.share->ep_status); | |
456 | ||
457 | fjes_hw_init_command_registers(hw, ¶m); | |
458 | } | |
459 | } | |
460 | ||
ac63b947 TI |
461 | static void fjes_tx_stall_task(struct work_struct *work) |
462 | { | |
463 | struct fjes_adapter *adapter = container_of(work, | |
464 | struct fjes_adapter, tx_stall_task); | |
465 | struct net_device *netdev = adapter->netdev; | |
466 | struct fjes_hw *hw = &adapter->hw; | |
467 | int all_queue_available, sendable; | |
468 | enum ep_partner_status pstatus; | |
469 | int max_epid, my_epid, epid; | |
470 | union ep_buffer_info *info; | |
471 | int i; | |
472 | ||
473 | if (((long)jiffies - | |
4d0e9657 | 474 | dev_trans_start(netdev)) > FJES_TX_TX_STALL_TIMEOUT) { |
ac63b947 TI |
475 | netif_wake_queue(netdev); |
476 | return; | |
477 | } | |
478 | ||
479 | my_epid = hw->my_epid; | |
480 | max_epid = hw->max_epid; | |
481 | ||
482 | for (i = 0; i < 5; i++) { | |
483 | all_queue_available = 1; | |
484 | ||
485 | for (epid = 0; epid < max_epid; epid++) { | |
486 | if (my_epid == epid) | |
487 | continue; | |
488 | ||
489 | pstatus = fjes_hw_get_partner_ep_status(hw, epid); | |
490 | sendable = (pstatus == EP_PARTNER_SHARED); | |
491 | if (!sendable) | |
492 | continue; | |
493 | ||
494 | info = adapter->hw.ep_shm_info[epid].tx.info; | |
495 | ||
16bbec3a TI |
496 | if (!(info->v1i.rx_status & FJES_RX_MTU_CHANGING_DONE)) |
497 | return; | |
498 | ||
ac63b947 TI |
499 | if (EP_RING_FULL(info->v1i.head, info->v1i.tail, |
500 | info->v1i.count_max)) { | |
501 | all_queue_available = 0; | |
502 | break; | |
503 | } | |
504 | } | |
505 | ||
506 | if (all_queue_available) { | |
507 | netif_wake_queue(netdev); | |
508 | return; | |
509 | } | |
510 | } | |
511 | ||
512 | usleep_range(50, 100); | |
513 | ||
514 | queue_work(adapter->txrx_wq, &adapter->tx_stall_task); | |
515 | } | |
516 | ||
ff5b4210 TI |
517 | static void fjes_force_close_task(struct work_struct *work) |
518 | { | |
519 | struct fjes_adapter *adapter = container_of(work, | |
520 | struct fjes_adapter, force_close_task); | |
521 | struct net_device *netdev = adapter->netdev; | |
522 | ||
523 | rtnl_lock(); | |
524 | dev_close(netdev); | |
525 | rtnl_unlock(); | |
526 | } | |
527 | ||
b772b9dc TI |
528 | static void fjes_raise_intr_rxdata_task(struct work_struct *work) |
529 | { | |
530 | struct fjes_adapter *adapter = container_of(work, | |
531 | struct fjes_adapter, raise_intr_rxdata_task); | |
532 | struct fjes_hw *hw = &adapter->hw; | |
533 | enum ep_partner_status pstatus; | |
534 | int max_epid, my_epid, epid; | |
535 | ||
536 | my_epid = hw->my_epid; | |
537 | max_epid = hw->max_epid; | |
538 | ||
539 | for (epid = 0; epid < max_epid; epid++) | |
540 | hw->ep_shm_info[epid].tx_status_work = 0; | |
541 | ||
542 | for (epid = 0; epid < max_epid; epid++) { | |
543 | if (epid == my_epid) | |
544 | continue; | |
545 | ||
546 | pstatus = fjes_hw_get_partner_ep_status(hw, epid); | |
547 | if (pstatus == EP_PARTNER_SHARED) { | |
548 | hw->ep_shm_info[epid].tx_status_work = | |
549 | hw->ep_shm_info[epid].tx.info->v1i.tx_status; | |
550 | ||
551 | if (hw->ep_shm_info[epid].tx_status_work == | |
552 | FJES_TX_DELAY_SEND_PENDING) { | |
553 | hw->ep_shm_info[epid].tx.info->v1i.tx_status = | |
554 | FJES_TX_DELAY_SEND_NONE; | |
555 | } | |
556 | } | |
557 | } | |
558 | ||
559 | for (epid = 0; epid < max_epid; epid++) { | |
560 | if (epid == my_epid) | |
561 | continue; | |
562 | ||
563 | pstatus = fjes_hw_get_partner_ep_status(hw, epid); | |
564 | if ((hw->ep_shm_info[epid].tx_status_work == | |
565 | FJES_TX_DELAY_SEND_PENDING) && | |
566 | (pstatus == EP_PARTNER_SHARED) && | |
19a0a7fd TI |
567 | !(hw->ep_shm_info[epid].rx.info->v1i.rx_status & |
568 | FJES_RX_POLL_WORK)) { | |
b772b9dc TI |
569 | fjes_hw_raise_interrupt(hw, epid, |
570 | REG_ICTL_MASK_RX_DATA); | |
571 | } | |
572 | } | |
573 | ||
574 | usleep_range(500, 1000); | |
575 | } | |
576 | ||
9acf51cb TI |
577 | static int fjes_tx_send(struct fjes_adapter *adapter, int dest, |
578 | void *data, size_t len) | |
579 | { | |
580 | int retval; | |
581 | ||
582 | retval = fjes_hw_epbuf_tx_pkt_send(&adapter->hw.ep_shm_info[dest].tx, | |
583 | data, len); | |
584 | if (retval) | |
585 | return retval; | |
586 | ||
587 | adapter->hw.ep_shm_info[dest].tx.info->v1i.tx_status = | |
588 | FJES_TX_DELAY_SEND_PENDING; | |
b772b9dc TI |
589 | if (!work_pending(&adapter->raise_intr_rxdata_task)) |
590 | queue_work(adapter->txrx_wq, | |
591 | &adapter->raise_intr_rxdata_task); | |
9acf51cb TI |
592 | |
593 | retval = 0; | |
594 | return retval; | |
595 | } | |
596 | ||
597 | static netdev_tx_t | |
598 | fjes_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
599 | { | |
600 | struct fjes_adapter *adapter = netdev_priv(netdev); | |
601 | struct fjes_hw *hw = &adapter->hw; | |
602 | ||
603 | int max_epid, my_epid, dest_epid; | |
604 | enum ep_partner_status pstatus; | |
605 | struct netdev_queue *cur_queue; | |
606 | char shortpkt[VLAN_ETH_HLEN]; | |
607 | bool is_multi, vlan; | |
608 | struct ethhdr *eth; | |
609 | u16 queue_no = 0; | |
610 | u16 vlan_id = 0; | |
611 | netdev_tx_t ret; | |
612 | char *data; | |
613 | int len; | |
614 | ||
615 | ret = NETDEV_TX_OK; | |
616 | is_multi = false; | |
617 | cur_queue = netdev_get_tx_queue(netdev, queue_no); | |
618 | ||
619 | eth = (struct ethhdr *)skb->data; | |
620 | my_epid = hw->my_epid; | |
621 | ||
622 | vlan = (vlan_get_tag(skb, &vlan_id) == 0) ? true : false; | |
623 | ||
624 | data = skb->data; | |
625 | len = skb->len; | |
626 | ||
627 | if (is_multicast_ether_addr(eth->h_dest)) { | |
628 | dest_epid = 0; | |
629 | max_epid = hw->max_epid; | |
630 | is_multi = true; | |
631 | } else if (is_local_ether_addr(eth->h_dest)) { | |
632 | dest_epid = eth->h_dest[ETH_ALEN - 1]; | |
633 | max_epid = dest_epid + 1; | |
634 | ||
635 | if ((eth->h_dest[0] == 0x02) && | |
636 | (0x00 == (eth->h_dest[1] | eth->h_dest[2] | | |
637 | eth->h_dest[3] | eth->h_dest[4])) && | |
638 | (dest_epid < hw->max_epid)) { | |
639 | ; | |
640 | } else { | |
641 | dest_epid = 0; | |
642 | max_epid = 0; | |
643 | ret = NETDEV_TX_OK; | |
644 | ||
645 | adapter->stats64.tx_packets += 1; | |
646 | hw->ep_shm_info[my_epid].net_stats.tx_packets += 1; | |
647 | adapter->stats64.tx_bytes += len; | |
648 | hw->ep_shm_info[my_epid].net_stats.tx_bytes += len; | |
649 | } | |
650 | } else { | |
651 | dest_epid = 0; | |
652 | max_epid = 0; | |
653 | ret = NETDEV_TX_OK; | |
654 | ||
655 | adapter->stats64.tx_packets += 1; | |
656 | hw->ep_shm_info[my_epid].net_stats.tx_packets += 1; | |
657 | adapter->stats64.tx_bytes += len; | |
658 | hw->ep_shm_info[my_epid].net_stats.tx_bytes += len; | |
659 | } | |
660 | ||
661 | for (; dest_epid < max_epid; dest_epid++) { | |
662 | if (my_epid == dest_epid) | |
663 | continue; | |
664 | ||
665 | pstatus = fjes_hw_get_partner_ep_status(hw, dest_epid); | |
666 | if (pstatus != EP_PARTNER_SHARED) { | |
667 | ret = NETDEV_TX_OK; | |
668 | } else if (!fjes_hw_check_epbuf_version( | |
669 | &adapter->hw.ep_shm_info[dest_epid].rx, 0)) { | |
670 | /* version is NOT 0 */ | |
671 | adapter->stats64.tx_carrier_errors += 1; | |
3c3bd4a9 | 672 | hw->ep_shm_info[dest_epid].net_stats |
9acf51cb TI |
673 | .tx_carrier_errors += 1; |
674 | ||
675 | ret = NETDEV_TX_OK; | |
676 | } else if (!fjes_hw_check_mtu( | |
677 | &adapter->hw.ep_shm_info[dest_epid].rx, | |
678 | netdev->mtu)) { | |
679 | adapter->stats64.tx_dropped += 1; | |
3c3bd4a9 | 680 | hw->ep_shm_info[dest_epid].net_stats.tx_dropped += 1; |
9acf51cb | 681 | adapter->stats64.tx_errors += 1; |
3c3bd4a9 | 682 | hw->ep_shm_info[dest_epid].net_stats.tx_errors += 1; |
9acf51cb TI |
683 | |
684 | ret = NETDEV_TX_OK; | |
685 | } else if (vlan && | |
686 | !fjes_hw_check_vlan_id( | |
687 | &adapter->hw.ep_shm_info[dest_epid].rx, | |
688 | vlan_id)) { | |
689 | ret = NETDEV_TX_OK; | |
690 | } else { | |
691 | if (len < VLAN_ETH_HLEN) { | |
692 | memset(shortpkt, 0, VLAN_ETH_HLEN); | |
693 | memcpy(shortpkt, skb->data, skb->len); | |
694 | len = VLAN_ETH_HLEN; | |
695 | data = shortpkt; | |
696 | } | |
697 | ||
698 | if (adapter->tx_retry_count == 0) { | |
699 | adapter->tx_start_jiffies = jiffies; | |
700 | adapter->tx_retry_count = 1; | |
701 | } else { | |
702 | adapter->tx_retry_count++; | |
703 | } | |
704 | ||
705 | if (fjes_tx_send(adapter, dest_epid, data, len)) { | |
706 | if (is_multi) { | |
707 | ret = NETDEV_TX_OK; | |
708 | } else if ( | |
709 | ((long)jiffies - | |
710 | (long)adapter->tx_start_jiffies) >= | |
711 | FJES_TX_RETRY_TIMEOUT) { | |
712 | adapter->stats64.tx_fifo_errors += 1; | |
3c3bd4a9 | 713 | hw->ep_shm_info[dest_epid].net_stats |
9acf51cb TI |
714 | .tx_fifo_errors += 1; |
715 | adapter->stats64.tx_errors += 1; | |
3c3bd4a9 | 716 | hw->ep_shm_info[dest_epid].net_stats |
9acf51cb TI |
717 | .tx_errors += 1; |
718 | ||
719 | ret = NETDEV_TX_OK; | |
720 | } else { | |
860e9538 | 721 | netif_trans_update(netdev); |
9acf51cb TI |
722 | netif_tx_stop_queue(cur_queue); |
723 | ||
ac63b947 TI |
724 | if (!work_pending(&adapter->tx_stall_task)) |
725 | queue_work(adapter->txrx_wq, | |
726 | &adapter->tx_stall_task); | |
727 | ||
9acf51cb TI |
728 | ret = NETDEV_TX_BUSY; |
729 | } | |
730 | } else { | |
731 | if (!is_multi) { | |
732 | adapter->stats64.tx_packets += 1; | |
3c3bd4a9 | 733 | hw->ep_shm_info[dest_epid].net_stats |
9acf51cb TI |
734 | .tx_packets += 1; |
735 | adapter->stats64.tx_bytes += len; | |
3c3bd4a9 | 736 | hw->ep_shm_info[dest_epid].net_stats |
9acf51cb TI |
737 | .tx_bytes += len; |
738 | } | |
739 | ||
740 | adapter->tx_retry_count = 0; | |
741 | ret = NETDEV_TX_OK; | |
742 | } | |
743 | } | |
744 | } | |
745 | ||
746 | if (ret == NETDEV_TX_OK) { | |
747 | dev_kfree_skb(skb); | |
748 | if (is_multi) { | |
749 | adapter->stats64.tx_packets += 1; | |
750 | hw->ep_shm_info[my_epid].net_stats.tx_packets += 1; | |
751 | adapter->stats64.tx_bytes += 1; | |
752 | hw->ep_shm_info[my_epid].net_stats.tx_bytes += len; | |
753 | } | |
754 | } | |
755 | ||
756 | return ret; | |
757 | } | |
758 | ||
4393e767 TI |
759 | static void fjes_tx_retry(struct net_device *netdev) |
760 | { | |
761 | struct netdev_queue *queue = netdev_get_tx_queue(netdev, 0); | |
762 | ||
763 | netif_tx_wake_queue(queue); | |
764 | } | |
765 | ||
879bc9a3 TI |
766 | static struct rtnl_link_stats64 * |
767 | fjes_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats) | |
768 | { | |
769 | struct fjes_adapter *adapter = netdev_priv(netdev); | |
770 | ||
771 | memcpy(stats, &adapter->stats64, sizeof(struct rtnl_link_stats64)); | |
772 | ||
773 | return stats; | |
774 | } | |
775 | ||
b9e23a67 TI |
776 | static int fjes_change_mtu(struct net_device *netdev, int new_mtu) |
777 | { | |
16bbec3a | 778 | struct fjes_adapter *adapter = netdev_priv(netdev); |
b9e23a67 | 779 | bool running = netif_running(netdev); |
16bbec3a | 780 | struct fjes_hw *hw = &adapter->hw; |
bd5a2569 | 781 | unsigned long flags; |
16bbec3a TI |
782 | int ret = -EINVAL; |
783 | int idx, epidx; | |
b9e23a67 TI |
784 | |
785 | for (idx = 0; fjes_support_mtu[idx] != 0; idx++) { | |
786 | if (new_mtu <= fjes_support_mtu[idx]) { | |
787 | new_mtu = fjes_support_mtu[idx]; | |
788 | if (new_mtu == netdev->mtu) | |
789 | return 0; | |
790 | ||
16bbec3a TI |
791 | ret = 0; |
792 | break; | |
793 | } | |
794 | } | |
795 | ||
796 | if (ret) | |
797 | return ret; | |
b9e23a67 | 798 | |
16bbec3a | 799 | if (running) { |
bd5a2569 | 800 | spin_lock_irqsave(&hw->rx_status_lock, flags); |
16bbec3a TI |
801 | for (epidx = 0; epidx < hw->max_epid; epidx++) { |
802 | if (epidx == hw->my_epid) | |
803 | continue; | |
804 | hw->ep_shm_info[epidx].tx.info->v1i.rx_status &= | |
805 | ~FJES_RX_MTU_CHANGING_DONE; | |
806 | } | |
bd5a2569 TI |
807 | spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
808 | ||
16bbec3a TI |
809 | netif_tx_stop_all_queues(netdev); |
810 | netif_carrier_off(netdev); | |
811 | cancel_work_sync(&adapter->tx_stall_task); | |
812 | napi_disable(&adapter->napi); | |
b9e23a67 | 813 | |
16bbec3a | 814 | msleep(1000); |
b9e23a67 | 815 | |
16bbec3a TI |
816 | netif_tx_stop_all_queues(netdev); |
817 | } | |
818 | ||
819 | netdev->mtu = new_mtu; | |
820 | ||
821 | if (running) { | |
822 | for (epidx = 0; epidx < hw->max_epid; epidx++) { | |
823 | if (epidx == hw->my_epid) | |
824 | continue; | |
825 | ||
bd5a2569 | 826 | spin_lock_irqsave(&hw->rx_status_lock, flags); |
16bbec3a TI |
827 | fjes_hw_setup_epbuf(&hw->ep_shm_info[epidx].tx, |
828 | netdev->dev_addr, | |
829 | netdev->mtu); | |
16bbec3a TI |
830 | |
831 | hw->ep_shm_info[epidx].tx.info->v1i.rx_status |= | |
832 | FJES_RX_MTU_CHANGING_DONE; | |
bd5a2569 | 833 | spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
b9e23a67 | 834 | } |
16bbec3a TI |
835 | |
836 | netif_tx_wake_all_queues(netdev); | |
837 | netif_carrier_on(netdev); | |
838 | napi_enable(&adapter->napi); | |
bd5a2569 | 839 | napi_schedule(&adapter->napi); |
b9e23a67 TI |
840 | } |
841 | ||
16bbec3a | 842 | return ret; |
b9e23a67 TI |
843 | } |
844 | ||
3e3fedda TI |
845 | static int fjes_vlan_rx_add_vid(struct net_device *netdev, |
846 | __be16 proto, u16 vid) | |
847 | { | |
848 | struct fjes_adapter *adapter = netdev_priv(netdev); | |
849 | bool ret = true; | |
850 | int epid; | |
851 | ||
852 | for (epid = 0; epid < adapter->hw.max_epid; epid++) { | |
853 | if (epid == adapter->hw.my_epid) | |
854 | continue; | |
855 | ||
856 | if (!fjes_hw_check_vlan_id( | |
857 | &adapter->hw.ep_shm_info[epid].tx, vid)) | |
858 | ret = fjes_hw_set_vlan_id( | |
859 | &adapter->hw.ep_shm_info[epid].tx, vid); | |
860 | } | |
861 | ||
862 | return ret ? 0 : -ENOSPC; | |
863 | } | |
864 | ||
865 | static int fjes_vlan_rx_kill_vid(struct net_device *netdev, | |
866 | __be16 proto, u16 vid) | |
867 | { | |
868 | struct fjes_adapter *adapter = netdev_priv(netdev); | |
869 | int epid; | |
870 | ||
871 | for (epid = 0; epid < adapter->hw.max_epid; epid++) { | |
872 | if (epid == adapter->hw.my_epid) | |
873 | continue; | |
874 | ||
875 | fjes_hw_del_vlan_id(&adapter->hw.ep_shm_info[epid].tx, vid); | |
876 | } | |
877 | ||
878 | return 0; | |
879 | } | |
880 | ||
cb79eaae TI |
881 | static void fjes_txrx_stop_req_irq(struct fjes_adapter *adapter, |
882 | int src_epid) | |
883 | { | |
884 | struct fjes_hw *hw = &adapter->hw; | |
885 | enum ep_partner_status status; | |
bd5a2569 | 886 | unsigned long flags; |
cb79eaae TI |
887 | |
888 | status = fjes_hw_get_partner_ep_status(hw, src_epid); | |
889 | switch (status) { | |
890 | case EP_PARTNER_UNSHARE: | |
891 | case EP_PARTNER_COMPLETE: | |
892 | default: | |
893 | break; | |
894 | case EP_PARTNER_WAITING: | |
895 | if (src_epid < hw->my_epid) { | |
bd5a2569 | 896 | spin_lock_irqsave(&hw->rx_status_lock, flags); |
cb79eaae TI |
897 | hw->ep_shm_info[src_epid].tx.info->v1i.rx_status |= |
898 | FJES_RX_STOP_REQ_DONE; | |
bd5a2569 | 899 | spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
cb79eaae TI |
900 | |
901 | clear_bit(src_epid, &hw->txrx_stop_req_bit); | |
902 | set_bit(src_epid, &adapter->unshare_watch_bitmask); | |
903 | ||
904 | if (!work_pending(&adapter->unshare_watch_task)) | |
905 | queue_work(adapter->control_wq, | |
906 | &adapter->unshare_watch_task); | |
907 | } | |
908 | break; | |
909 | case EP_PARTNER_SHARED: | |
910 | if (hw->ep_shm_info[src_epid].rx.info->v1i.rx_status & | |
911 | FJES_RX_STOP_REQ_REQUEST) { | |
912 | set_bit(src_epid, &hw->epstop_req_bit); | |
913 | if (!work_pending(&hw->epstop_task)) | |
914 | queue_work(adapter->control_wq, | |
915 | &hw->epstop_task); | |
916 | } | |
917 | break; | |
918 | } | |
919 | } | |
920 | ||
921 | static void fjes_stop_req_irq(struct fjes_adapter *adapter, int src_epid) | |
922 | { | |
923 | struct fjes_hw *hw = &adapter->hw; | |
924 | enum ep_partner_status status; | |
bd5a2569 | 925 | unsigned long flags; |
cb79eaae TI |
926 | |
927 | set_bit(src_epid, &hw->hw_info.buffer_unshare_reserve_bit); | |
928 | ||
929 | status = fjes_hw_get_partner_ep_status(hw, src_epid); | |
930 | switch (status) { | |
931 | case EP_PARTNER_WAITING: | |
bd5a2569 | 932 | spin_lock_irqsave(&hw->rx_status_lock, flags); |
cb79eaae TI |
933 | hw->ep_shm_info[src_epid].tx.info->v1i.rx_status |= |
934 | FJES_RX_STOP_REQ_DONE; | |
bd5a2569 | 935 | spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
cb79eaae TI |
936 | clear_bit(src_epid, &hw->txrx_stop_req_bit); |
937 | /* fall through */ | |
938 | case EP_PARTNER_UNSHARE: | |
939 | case EP_PARTNER_COMPLETE: | |
940 | default: | |
941 | set_bit(src_epid, &adapter->unshare_watch_bitmask); | |
942 | if (!work_pending(&adapter->unshare_watch_task)) | |
943 | queue_work(adapter->control_wq, | |
944 | &adapter->unshare_watch_task); | |
945 | break; | |
946 | case EP_PARTNER_SHARED: | |
947 | set_bit(src_epid, &hw->epstop_req_bit); | |
948 | ||
949 | if (!work_pending(&hw->epstop_task)) | |
950 | queue_work(adapter->control_wq, &hw->epstop_task); | |
951 | break; | |
952 | } | |
953 | } | |
954 | ||
785f28e0 TI |
955 | static void fjes_update_zone_irq(struct fjes_adapter *adapter, |
956 | int src_epid) | |
957 | { | |
958 | struct fjes_hw *hw = &adapter->hw; | |
959 | ||
960 | if (!work_pending(&hw->update_zone_task)) | |
961 | queue_work(adapter->control_wq, &hw->update_zone_task); | |
962 | } | |
963 | ||
e5d486dc TI |
964 | static irqreturn_t fjes_intr(int irq, void *data) |
965 | { | |
966 | struct fjes_adapter *adapter = data; | |
967 | struct fjes_hw *hw = &adapter->hw; | |
968 | irqreturn_t ret; | |
969 | u32 icr; | |
970 | ||
971 | icr = fjes_hw_capture_interrupt_status(hw); | |
972 | ||
26585930 TI |
973 | if (icr & REG_IS_MASK_IS_ASSERT) { |
974 | if (icr & REG_ICTL_MASK_RX_DATA) | |
975 | fjes_rx_irq(adapter, icr & REG_IS_MASK_EPID); | |
976 | ||
cb79eaae TI |
977 | if (icr & REG_ICTL_MASK_DEV_STOP_REQ) |
978 | fjes_stop_req_irq(adapter, icr & REG_IS_MASK_EPID); | |
979 | ||
980 | if (icr & REG_ICTL_MASK_TXRX_STOP_REQ) | |
981 | fjes_txrx_stop_req_irq(adapter, icr & REG_IS_MASK_EPID); | |
982 | ||
983 | if (icr & REG_ICTL_MASK_TXRX_STOP_DONE) | |
984 | fjes_hw_set_irqmask(hw, | |
985 | REG_ICTL_MASK_TXRX_STOP_DONE, true); | |
986 | ||
785f28e0 TI |
987 | if (icr & REG_ICTL_MASK_INFO_UPDATE) |
988 | fjes_update_zone_irq(adapter, icr & REG_IS_MASK_EPID); | |
989 | ||
e5d486dc | 990 | ret = IRQ_HANDLED; |
26585930 | 991 | } else { |
e5d486dc | 992 | ret = IRQ_NONE; |
26585930 | 993 | } |
e5d486dc TI |
994 | |
995 | return ret; | |
996 | } | |
997 | ||
26585930 TI |
998 | static int fjes_rxframe_search_exist(struct fjes_adapter *adapter, |
999 | int start_epid) | |
1000 | { | |
1001 | struct fjes_hw *hw = &adapter->hw; | |
1002 | enum ep_partner_status pstatus; | |
1003 | int max_epid, cur_epid; | |
1004 | int i; | |
1005 | ||
1006 | max_epid = hw->max_epid; | |
1007 | start_epid = (start_epid + 1 + max_epid) % max_epid; | |
1008 | ||
1009 | for (i = 0; i < max_epid; i++) { | |
1010 | cur_epid = (start_epid + i) % max_epid; | |
1011 | if (cur_epid == hw->my_epid) | |
1012 | continue; | |
1013 | ||
1014 | pstatus = fjes_hw_get_partner_ep_status(hw, cur_epid); | |
1015 | if (pstatus == EP_PARTNER_SHARED) { | |
1016 | if (!fjes_hw_epbuf_rx_is_empty( | |
1017 | &hw->ep_shm_info[cur_epid].rx)) | |
1018 | return cur_epid; | |
1019 | } | |
1020 | } | |
1021 | return -1; | |
1022 | } | |
1023 | ||
1024 | static void *fjes_rxframe_get(struct fjes_adapter *adapter, size_t *psize, | |
1025 | int *cur_epid) | |
1026 | { | |
1027 | void *frame; | |
1028 | ||
1029 | *cur_epid = fjes_rxframe_search_exist(adapter, *cur_epid); | |
1030 | if (*cur_epid < 0) | |
1031 | return NULL; | |
1032 | ||
1033 | frame = | |
1034 | fjes_hw_epbuf_rx_curpkt_get_addr( | |
1035 | &adapter->hw.ep_shm_info[*cur_epid].rx, psize); | |
1036 | ||
1037 | return frame; | |
1038 | } | |
1039 | ||
1040 | static void fjes_rxframe_release(struct fjes_adapter *adapter, int cur_epid) | |
1041 | { | |
1042 | fjes_hw_epbuf_rx_curpkt_drop(&adapter->hw.ep_shm_info[cur_epid].rx); | |
1043 | } | |
1044 | ||
1045 | static void fjes_rx_irq(struct fjes_adapter *adapter, int src_epid) | |
1046 | { | |
1047 | struct fjes_hw *hw = &adapter->hw; | |
1048 | ||
1049 | fjes_hw_set_irqmask(hw, REG_ICTL_MASK_RX_DATA, true); | |
1050 | ||
1051 | adapter->unset_rx_last = true; | |
1052 | napi_schedule(&adapter->napi); | |
1053 | } | |
1054 | ||
1055 | static int fjes_poll(struct napi_struct *napi, int budget) | |
1056 | { | |
1057 | struct fjes_adapter *adapter = | |
1058 | container_of(napi, struct fjes_adapter, napi); | |
1059 | struct net_device *netdev = napi->dev; | |
1060 | struct fjes_hw *hw = &adapter->hw; | |
1061 | struct sk_buff *skb; | |
1062 | int work_done = 0; | |
1063 | int cur_epid = 0; | |
1064 | int epidx; | |
1065 | size_t frame_len; | |
1066 | void *frame; | |
1067 | ||
bd5a2569 | 1068 | spin_lock(&hw->rx_status_lock); |
26585930 TI |
1069 | for (epidx = 0; epidx < hw->max_epid; epidx++) { |
1070 | if (epidx == hw->my_epid) | |
1071 | continue; | |
1072 | ||
bd5a2569 TI |
1073 | if (fjes_hw_get_partner_ep_status(hw, epidx) == |
1074 | EP_PARTNER_SHARED) | |
1075 | adapter->hw.ep_shm_info[epidx] | |
1076 | .tx.info->v1i.rx_status |= FJES_RX_POLL_WORK; | |
26585930 | 1077 | } |
bd5a2569 | 1078 | spin_unlock(&hw->rx_status_lock); |
26585930 TI |
1079 | |
1080 | while (work_done < budget) { | |
1081 | prefetch(&adapter->hw); | |
1082 | frame = fjes_rxframe_get(adapter, &frame_len, &cur_epid); | |
1083 | ||
1084 | if (frame) { | |
1085 | skb = napi_alloc_skb(napi, frame_len); | |
1086 | if (!skb) { | |
1087 | adapter->stats64.rx_dropped += 1; | |
1088 | hw->ep_shm_info[cur_epid].net_stats | |
1089 | .rx_dropped += 1; | |
1090 | adapter->stats64.rx_errors += 1; | |
1091 | hw->ep_shm_info[cur_epid].net_stats | |
1092 | .rx_errors += 1; | |
1093 | } else { | |
1094 | memcpy(skb_put(skb, frame_len), | |
1095 | frame, frame_len); | |
1096 | skb->protocol = eth_type_trans(skb, netdev); | |
1097 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1098 | ||
1099 | netif_receive_skb(skb); | |
1100 | ||
1101 | work_done++; | |
1102 | ||
1103 | adapter->stats64.rx_packets += 1; | |
1104 | hw->ep_shm_info[cur_epid].net_stats | |
1105 | .rx_packets += 1; | |
1106 | adapter->stats64.rx_bytes += frame_len; | |
1107 | hw->ep_shm_info[cur_epid].net_stats | |
1108 | .rx_bytes += frame_len; | |
1109 | ||
1110 | if (is_multicast_ether_addr( | |
1111 | ((struct ethhdr *)frame)->h_dest)) { | |
1112 | adapter->stats64.multicast += 1; | |
1113 | hw->ep_shm_info[cur_epid].net_stats | |
1114 | .multicast += 1; | |
1115 | } | |
1116 | } | |
1117 | ||
1118 | fjes_rxframe_release(adapter, cur_epid); | |
1119 | adapter->unset_rx_last = true; | |
1120 | } else { | |
1121 | break; | |
1122 | } | |
1123 | } | |
1124 | ||
1125 | if (work_done < budget) { | |
1126 | napi_complete(napi); | |
1127 | ||
1128 | if (adapter->unset_rx_last) { | |
1129 | adapter->rx_last_jiffies = jiffies; | |
1130 | adapter->unset_rx_last = false; | |
1131 | } | |
1132 | ||
1133 | if (((long)jiffies - (long)adapter->rx_last_jiffies) < 3) { | |
1134 | napi_reschedule(napi); | |
1135 | } else { | |
bd5a2569 | 1136 | spin_lock(&hw->rx_status_lock); |
26585930 TI |
1137 | for (epidx = 0; epidx < hw->max_epid; epidx++) { |
1138 | if (epidx == hw->my_epid) | |
1139 | continue; | |
bd5a2569 TI |
1140 | if (fjes_hw_get_partner_ep_status(hw, epidx) == |
1141 | EP_PARTNER_SHARED) | |
1142 | adapter->hw.ep_shm_info[epidx].tx | |
1143 | .info->v1i.rx_status &= | |
26585930 TI |
1144 | ~FJES_RX_POLL_WORK; |
1145 | } | |
bd5a2569 | 1146 | spin_unlock(&hw->rx_status_lock); |
26585930 TI |
1147 | |
1148 | fjes_hw_set_irqmask(hw, REG_ICTL_MASK_RX_DATA, false); | |
1149 | } | |
1150 | } | |
1151 | ||
1152 | return work_done; | |
1153 | } | |
1154 | ||
658d439b TI |
1155 | /* fjes_probe - Device Initialization Routine */ |
1156 | static int fjes_probe(struct platform_device *plat_dev) | |
1157 | { | |
2fcbca68 TI |
1158 | struct fjes_adapter *adapter; |
1159 | struct net_device *netdev; | |
1160 | struct resource *res; | |
1161 | struct fjes_hw *hw; | |
1162 | int err; | |
1163 | ||
1164 | err = -ENOMEM; | |
1165 | netdev = alloc_netdev_mq(sizeof(struct fjes_adapter), "es%d", | |
1166 | NET_NAME_UNKNOWN, fjes_netdev_setup, | |
1167 | FJES_MAX_QUEUES); | |
1168 | ||
1169 | if (!netdev) | |
1170 | goto err_out; | |
1171 | ||
1172 | SET_NETDEV_DEV(netdev, &plat_dev->dev); | |
1173 | ||
1174 | dev_set_drvdata(&plat_dev->dev, netdev); | |
1175 | adapter = netdev_priv(netdev); | |
1176 | adapter->netdev = netdev; | |
1177 | adapter->plat_dev = plat_dev; | |
1178 | hw = &adapter->hw; | |
1179 | hw->back = adapter; | |
1180 | ||
1181 | /* setup the private structure */ | |
1182 | err = fjes_sw_init(adapter); | |
1183 | if (err) | |
1184 | goto err_free_netdev; | |
1185 | ||
ff5b4210 | 1186 | INIT_WORK(&adapter->force_close_task, fjes_force_close_task); |
2fcbca68 TI |
1187 | adapter->force_reset = false; |
1188 | adapter->open_guard = false; | |
1189 | ||
b772b9dc | 1190 | adapter->txrx_wq = create_workqueue(DRV_NAME "/txrx"); |
8edb62a8 | 1191 | adapter->control_wq = create_workqueue(DRV_NAME "/control"); |
b772b9dc | 1192 | |
ac63b947 | 1193 | INIT_WORK(&adapter->tx_stall_task, fjes_tx_stall_task); |
b772b9dc TI |
1194 | INIT_WORK(&adapter->raise_intr_rxdata_task, |
1195 | fjes_raise_intr_rxdata_task); | |
8fc4cadb TI |
1196 | INIT_WORK(&adapter->unshare_watch_task, fjes_watch_unshare_task); |
1197 | adapter->unshare_watch_bitmask = 0; | |
b772b9dc | 1198 | |
8edb62a8 TI |
1199 | INIT_DELAYED_WORK(&adapter->interrupt_watch_task, fjes_irq_watch_task); |
1200 | adapter->interrupt_watch_enable = false; | |
1201 | ||
2fcbca68 TI |
1202 | res = platform_get_resource(plat_dev, IORESOURCE_MEM, 0); |
1203 | hw->hw_res.start = res->start; | |
e0897ae3 | 1204 | hw->hw_res.size = resource_size(res); |
2fcbca68 TI |
1205 | hw->hw_res.irq = platform_get_irq(plat_dev, 0); |
1206 | err = fjes_hw_init(&adapter->hw); | |
1207 | if (err) | |
1208 | goto err_free_netdev; | |
1209 | ||
1210 | /* setup MAC address (02:00:00:00:00:[epid])*/ | |
1211 | netdev->dev_addr[0] = 2; | |
1212 | netdev->dev_addr[1] = 0; | |
1213 | netdev->dev_addr[2] = 0; | |
1214 | netdev->dev_addr[3] = 0; | |
1215 | netdev->dev_addr[4] = 0; | |
1216 | netdev->dev_addr[5] = hw->my_epid; /* EPID */ | |
1217 | ||
1218 | err = register_netdev(netdev); | |
1219 | if (err) | |
1220 | goto err_hw_exit; | |
1221 | ||
1222 | netif_carrier_off(netdev); | |
1223 | ||
658d439b | 1224 | return 0; |
2fcbca68 TI |
1225 | |
1226 | err_hw_exit: | |
1227 | fjes_hw_exit(&adapter->hw); | |
1228 | err_free_netdev: | |
1229 | free_netdev(netdev); | |
1230 | err_out: | |
1231 | return err; | |
658d439b TI |
1232 | } |
1233 | ||
1234 | /* fjes_remove - Device Removal Routine */ | |
1235 | static int fjes_remove(struct platform_device *plat_dev) | |
1236 | { | |
2fcbca68 TI |
1237 | struct net_device *netdev = dev_get_drvdata(&plat_dev->dev); |
1238 | struct fjes_adapter *adapter = netdev_priv(netdev); | |
1239 | struct fjes_hw *hw = &adapter->hw; | |
1240 | ||
8edb62a8 | 1241 | cancel_delayed_work_sync(&adapter->interrupt_watch_task); |
8fc4cadb | 1242 | cancel_work_sync(&adapter->unshare_watch_task); |
b772b9dc | 1243 | cancel_work_sync(&adapter->raise_intr_rxdata_task); |
ac63b947 | 1244 | cancel_work_sync(&adapter->tx_stall_task); |
8edb62a8 TI |
1245 | if (adapter->control_wq) |
1246 | destroy_workqueue(adapter->control_wq); | |
b772b9dc TI |
1247 | if (adapter->txrx_wq) |
1248 | destroy_workqueue(adapter->txrx_wq); | |
1249 | ||
2fcbca68 TI |
1250 | unregister_netdev(netdev); |
1251 | ||
1252 | fjes_hw_exit(hw); | |
1253 | ||
26585930 TI |
1254 | netif_napi_del(&adapter->napi); |
1255 | ||
2fcbca68 TI |
1256 | free_netdev(netdev); |
1257 | ||
658d439b TI |
1258 | return 0; |
1259 | } | |
1260 | ||
2fcbca68 TI |
1261 | static int fjes_sw_init(struct fjes_adapter *adapter) |
1262 | { | |
26585930 TI |
1263 | struct net_device *netdev = adapter->netdev; |
1264 | ||
1265 | netif_napi_add(netdev, &adapter->napi, fjes_poll, 64); | |
1266 | ||
2fcbca68 TI |
1267 | return 0; |
1268 | } | |
1269 | ||
1270 | /* fjes_netdev_setup - netdevice initialization routine */ | |
1271 | static void fjes_netdev_setup(struct net_device *netdev) | |
1272 | { | |
1273 | ether_setup(netdev); | |
1274 | ||
1275 | netdev->watchdog_timeo = FJES_TX_RETRY_INTERVAL; | |
1276 | netdev->netdev_ops = &fjes_netdev_ops; | |
786eec27 | 1277 | fjes_set_ethtool_ops(netdev); |
16bbec3a | 1278 | netdev->mtu = fjes_support_mtu[3]; |
2fcbca68 TI |
1279 | netdev->flags |= IFF_BROADCAST; |
1280 | netdev->features |= NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_FILTER; | |
1281 | } | |
1282 | ||
8edb62a8 TI |
1283 | static void fjes_irq_watch_task(struct work_struct *work) |
1284 | { | |
1285 | struct fjes_adapter *adapter = container_of(to_delayed_work(work), | |
1286 | struct fjes_adapter, interrupt_watch_task); | |
1287 | ||
1288 | local_irq_disable(); | |
1289 | fjes_intr(adapter->hw.hw_res.irq, adapter); | |
1290 | local_irq_enable(); | |
1291 | ||
1292 | if (fjes_rxframe_search_exist(adapter, 0) >= 0) | |
1293 | napi_schedule(&adapter->napi); | |
1294 | ||
1295 | if (adapter->interrupt_watch_enable) { | |
1296 | if (!delayed_work_pending(&adapter->interrupt_watch_task)) | |
1297 | queue_delayed_work(adapter->control_wq, | |
1298 | &adapter->interrupt_watch_task, | |
1299 | FJES_IRQ_WATCH_DELAY); | |
1300 | } | |
1301 | } | |
1302 | ||
8fc4cadb TI |
1303 | static void fjes_watch_unshare_task(struct work_struct *work) |
1304 | { | |
1305 | struct fjes_adapter *adapter = | |
1306 | container_of(work, struct fjes_adapter, unshare_watch_task); | |
1307 | ||
1308 | struct net_device *netdev = adapter->netdev; | |
1309 | struct fjes_hw *hw = &adapter->hw; | |
1310 | ||
1311 | int unshare_watch, unshare_reserve; | |
1312 | int max_epid, my_epid, epidx; | |
1313 | int stop_req, stop_req_done; | |
1314 | ulong unshare_watch_bitmask; | |
bd5a2569 | 1315 | unsigned long flags; |
8fc4cadb TI |
1316 | int wait_time = 0; |
1317 | int is_shared; | |
1318 | int ret; | |
1319 | ||
1320 | my_epid = hw->my_epid; | |
1321 | max_epid = hw->max_epid; | |
1322 | ||
1323 | unshare_watch_bitmask = adapter->unshare_watch_bitmask; | |
1324 | adapter->unshare_watch_bitmask = 0; | |
1325 | ||
1326 | while ((unshare_watch_bitmask || hw->txrx_stop_req_bit) && | |
1327 | (wait_time < 3000)) { | |
1328 | for (epidx = 0; epidx < hw->max_epid; epidx++) { | |
1329 | if (epidx == hw->my_epid) | |
1330 | continue; | |
1331 | ||
1332 | is_shared = fjes_hw_epid_is_shared(hw->hw_info.share, | |
1333 | epidx); | |
1334 | ||
1335 | stop_req = test_bit(epidx, &hw->txrx_stop_req_bit); | |
1336 | ||
1337 | stop_req_done = hw->ep_shm_info[epidx].rx.info->v1i.rx_status & | |
1338 | FJES_RX_STOP_REQ_DONE; | |
1339 | ||
1340 | unshare_watch = test_bit(epidx, &unshare_watch_bitmask); | |
1341 | ||
1342 | unshare_reserve = test_bit(epidx, | |
1343 | &hw->hw_info.buffer_unshare_reserve_bit); | |
1344 | ||
1345 | if ((!stop_req || | |
1346 | (is_shared && (!is_shared || !stop_req_done))) && | |
1347 | (is_shared || !unshare_watch || !unshare_reserve)) | |
1348 | continue; | |
1349 | ||
1350 | mutex_lock(&hw->hw_info.lock); | |
1351 | ret = fjes_hw_unregister_buff_addr(hw, epidx); | |
1352 | switch (ret) { | |
1353 | case 0: | |
1354 | break; | |
1355 | case -ENOMSG: | |
1356 | case -EBUSY: | |
1357 | default: | |
1358 | if (!work_pending( | |
1359 | &adapter->force_close_task)) { | |
1360 | adapter->force_reset = true; | |
1361 | schedule_work( | |
1362 | &adapter->force_close_task); | |
1363 | } | |
1364 | break; | |
1365 | } | |
1366 | mutex_unlock(&hw->hw_info.lock); | |
1367 | ||
bd5a2569 | 1368 | spin_lock_irqsave(&hw->rx_status_lock, flags); |
8fc4cadb TI |
1369 | fjes_hw_setup_epbuf(&hw->ep_shm_info[epidx].tx, |
1370 | netdev->dev_addr, netdev->mtu); | |
bd5a2569 | 1371 | spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
8fc4cadb TI |
1372 | |
1373 | clear_bit(epidx, &hw->txrx_stop_req_bit); | |
1374 | clear_bit(epidx, &unshare_watch_bitmask); | |
1375 | clear_bit(epidx, | |
1376 | &hw->hw_info.buffer_unshare_reserve_bit); | |
1377 | } | |
1378 | ||
1379 | msleep(100); | |
1380 | wait_time += 100; | |
1381 | } | |
1382 | ||
1383 | if (hw->hw_info.buffer_unshare_reserve_bit) { | |
1384 | for (epidx = 0; epidx < hw->max_epid; epidx++) { | |
1385 | if (epidx == hw->my_epid) | |
1386 | continue; | |
1387 | ||
1388 | if (test_bit(epidx, | |
1389 | &hw->hw_info.buffer_unshare_reserve_bit)) { | |
1390 | mutex_lock(&hw->hw_info.lock); | |
1391 | ||
1392 | ret = fjes_hw_unregister_buff_addr(hw, epidx); | |
1393 | switch (ret) { | |
1394 | case 0: | |
1395 | break; | |
1396 | case -ENOMSG: | |
1397 | case -EBUSY: | |
1398 | default: | |
1399 | if (!work_pending( | |
1400 | &adapter->force_close_task)) { | |
1401 | adapter->force_reset = true; | |
1402 | schedule_work( | |
1403 | &adapter->force_close_task); | |
1404 | } | |
1405 | break; | |
1406 | } | |
1407 | mutex_unlock(&hw->hw_info.lock); | |
1408 | ||
bd5a2569 | 1409 | spin_lock_irqsave(&hw->rx_status_lock, flags); |
8fc4cadb TI |
1410 | fjes_hw_setup_epbuf( |
1411 | &hw->ep_shm_info[epidx].tx, | |
1412 | netdev->dev_addr, netdev->mtu); | |
bd5a2569 TI |
1413 | spin_unlock_irqrestore(&hw->rx_status_lock, |
1414 | flags); | |
8fc4cadb TI |
1415 | |
1416 | clear_bit(epidx, &hw->txrx_stop_req_bit); | |
1417 | clear_bit(epidx, &unshare_watch_bitmask); | |
1418 | clear_bit(epidx, &hw->hw_info.buffer_unshare_reserve_bit); | |
1419 | } | |
1420 | ||
1421 | if (test_bit(epidx, &unshare_watch_bitmask)) { | |
bd5a2569 | 1422 | spin_lock_irqsave(&hw->rx_status_lock, flags); |
8fc4cadb TI |
1423 | hw->ep_shm_info[epidx].tx.info->v1i.rx_status &= |
1424 | ~FJES_RX_STOP_REQ_DONE; | |
bd5a2569 TI |
1425 | spin_unlock_irqrestore(&hw->rx_status_lock, |
1426 | flags); | |
8fc4cadb TI |
1427 | } |
1428 | } | |
1429 | } | |
1430 | } | |
1431 | ||
658d439b TI |
1432 | /* fjes_init_module - Driver Registration Routine */ |
1433 | static int __init fjes_init_module(void) | |
1434 | { | |
1435 | int result; | |
1436 | ||
1437 | pr_info("%s - version %s - %s\n", | |
1438 | fjes_driver_string, fjes_driver_version, fjes_copyright); | |
1439 | ||
1440 | result = platform_driver_register(&fjes_driver); | |
1441 | if (result < 0) | |
1442 | return result; | |
1443 | ||
1444 | result = acpi_bus_register_driver(&fjes_acpi_driver); | |
1445 | if (result < 0) | |
1446 | goto fail_acpi_driver; | |
1447 | ||
1448 | return 0; | |
1449 | ||
1450 | fail_acpi_driver: | |
1451 | platform_driver_unregister(&fjes_driver); | |
1452 | return result; | |
1453 | } | |
1454 | ||
1455 | module_init(fjes_init_module); | |
1456 | ||
1457 | /* fjes_exit_module - Driver Exit Cleanup Routine */ | |
1458 | static void __exit fjes_exit_module(void) | |
1459 | { | |
1460 | acpi_bus_unregister_driver(&fjes_acpi_driver); | |
1461 | platform_driver_unregister(&fjes_driver); | |
1462 | } | |
1463 | ||
1464 | module_exit(fjes_exit_module); |