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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, | |
658d439b TI |
100 | }, |
101 | .probe = fjes_probe, | |
102 | .remove = fjes_remove, | |
103 | }; | |
104 | ||
105 | static struct resource fjes_resource[] = { | |
106 | { | |
107 | .flags = IORESOURCE_MEM, | |
108 | .start = 0, | |
109 | .end = 0, | |
110 | }, | |
111 | { | |
112 | .flags = IORESOURCE_IRQ, | |
113 | .start = 0, | |
114 | .end = 0, | |
115 | }, | |
116 | }; | |
117 | ||
118 | static int fjes_acpi_add(struct acpi_device *device) | |
119 | { | |
120 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL}; | |
121 | char str_buf[sizeof(FJES_ACPI_SYMBOL) + 1]; | |
122 | struct platform_device *plat_dev; | |
123 | union acpi_object *str; | |
124 | acpi_status status; | |
125 | int result; | |
126 | ||
127 | status = acpi_evaluate_object(device->handle, "_STR", NULL, &buffer); | |
128 | if (ACPI_FAILURE(status)) | |
129 | return -ENODEV; | |
130 | ||
131 | str = buffer.pointer; | |
132 | result = utf16s_to_utf8s((wchar_t *)str->string.pointer, | |
133 | str->string.length, UTF16_LITTLE_ENDIAN, | |
134 | str_buf, sizeof(str_buf) - 1); | |
135 | str_buf[result] = 0; | |
136 | ||
137 | if (strncmp(FJES_ACPI_SYMBOL, str_buf, strlen(FJES_ACPI_SYMBOL)) != 0) { | |
138 | kfree(buffer.pointer); | |
139 | return -ENODEV; | |
140 | } | |
141 | kfree(buffer.pointer); | |
142 | ||
143 | status = acpi_walk_resources(device->handle, METHOD_NAME__CRS, | |
144 | fjes_get_acpi_resource, fjes_resource); | |
145 | if (ACPI_FAILURE(status)) | |
146 | return -ENODEV; | |
147 | ||
148 | /* create platform_device */ | |
149 | plat_dev = platform_device_register_simple(DRV_NAME, 0, fjes_resource, | |
150 | ARRAY_SIZE(fjes_resource)); | |
151 | device->driver_data = plat_dev; | |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
156 | static int fjes_acpi_remove(struct acpi_device *device) | |
157 | { | |
158 | struct platform_device *plat_dev; | |
159 | ||
160 | plat_dev = (struct platform_device *)acpi_driver_data(device); | |
161 | platform_device_unregister(plat_dev); | |
162 | ||
163 | return 0; | |
164 | } | |
165 | ||
166 | static acpi_status | |
167 | fjes_get_acpi_resource(struct acpi_resource *acpi_res, void *data) | |
168 | { | |
169 | struct acpi_resource_address32 *addr; | |
170 | struct acpi_resource_irq *irq; | |
171 | struct resource *res = data; | |
172 | ||
173 | switch (acpi_res->type) { | |
174 | case ACPI_RESOURCE_TYPE_ADDRESS32: | |
175 | addr = &acpi_res->data.address32; | |
176 | res[0].start = addr->address.minimum; | |
177 | res[0].end = addr->address.minimum + | |
178 | addr->address.address_length - 1; | |
179 | break; | |
180 | ||
181 | case ACPI_RESOURCE_TYPE_IRQ: | |
182 | irq = &acpi_res->data.irq; | |
183 | if (irq->interrupt_count != 1) | |
184 | return AE_ERROR; | |
185 | res[1].start = irq->interrupts[0]; | |
186 | res[1].end = irq->interrupts[0]; | |
187 | break; | |
188 | ||
189 | default: | |
190 | break; | |
191 | } | |
192 | ||
193 | return AE_OK; | |
194 | } | |
195 | ||
e5d486dc TI |
196 | static int fjes_request_irq(struct fjes_adapter *adapter) |
197 | { | |
198 | struct net_device *netdev = adapter->netdev; | |
199 | int result = -1; | |
200 | ||
8edb62a8 TI |
201 | adapter->interrupt_watch_enable = true; |
202 | if (!delayed_work_pending(&adapter->interrupt_watch_task)) { | |
203 | queue_delayed_work(adapter->control_wq, | |
204 | &adapter->interrupt_watch_task, | |
205 | FJES_IRQ_WATCH_DELAY); | |
206 | } | |
207 | ||
e5d486dc TI |
208 | if (!adapter->irq_registered) { |
209 | result = request_irq(adapter->hw.hw_res.irq, fjes_intr, | |
210 | IRQF_SHARED, netdev->name, adapter); | |
211 | if (result) | |
212 | adapter->irq_registered = false; | |
213 | else | |
214 | adapter->irq_registered = true; | |
215 | } | |
216 | ||
217 | return result; | |
218 | } | |
219 | ||
220 | static void fjes_free_irq(struct fjes_adapter *adapter) | |
221 | { | |
222 | struct fjes_hw *hw = &adapter->hw; | |
223 | ||
8edb62a8 TI |
224 | adapter->interrupt_watch_enable = false; |
225 | cancel_delayed_work_sync(&adapter->interrupt_watch_task); | |
226 | ||
e5d486dc TI |
227 | fjes_hw_set_irqmask(hw, REG_ICTL_MASK_ALL, true); |
228 | ||
229 | if (adapter->irq_registered) { | |
230 | free_irq(adapter->hw.hw_res.irq, adapter); | |
231 | adapter->irq_registered = false; | |
232 | } | |
233 | } | |
234 | ||
2fcbca68 | 235 | static const struct net_device_ops fjes_netdev_ops = { |
e5d486dc TI |
236 | .ndo_open = fjes_open, |
237 | .ndo_stop = fjes_close, | |
9acf51cb | 238 | .ndo_start_xmit = fjes_xmit_frame, |
879bc9a3 | 239 | .ndo_get_stats64 = fjes_get_stats64, |
b9e23a67 | 240 | .ndo_change_mtu = fjes_change_mtu, |
4393e767 | 241 | .ndo_tx_timeout = fjes_tx_retry, |
3e3fedda TI |
242 | .ndo_vlan_rx_add_vid = fjes_vlan_rx_add_vid, |
243 | .ndo_vlan_rx_kill_vid = fjes_vlan_rx_kill_vid, | |
2fcbca68 TI |
244 | }; |
245 | ||
e5d486dc TI |
246 | /* fjes_open - Called when a network interface is made active */ |
247 | static int fjes_open(struct net_device *netdev) | |
248 | { | |
249 | struct fjes_adapter *adapter = netdev_priv(netdev); | |
250 | struct fjes_hw *hw = &adapter->hw; | |
251 | int result; | |
252 | ||
253 | if (adapter->open_guard) | |
254 | return -ENXIO; | |
255 | ||
256 | result = fjes_setup_resources(adapter); | |
257 | if (result) | |
258 | goto err_setup_res; | |
259 | ||
260 | hw->txrx_stop_req_bit = 0; | |
261 | hw->epstop_req_bit = 0; | |
262 | ||
26585930 TI |
263 | napi_enable(&adapter->napi); |
264 | ||
e5d486dc TI |
265 | fjes_hw_capture_interrupt_status(hw); |
266 | ||
267 | result = fjes_request_irq(adapter); | |
268 | if (result) | |
269 | goto err_req_irq; | |
270 | ||
271 | fjes_hw_set_irqmask(hw, REG_ICTL_MASK_ALL, false); | |
272 | ||
273 | netif_tx_start_all_queues(netdev); | |
274 | netif_carrier_on(netdev); | |
275 | ||
276 | return 0; | |
277 | ||
278 | err_req_irq: | |
279 | fjes_free_irq(adapter); | |
26585930 | 280 | napi_disable(&adapter->napi); |
e5d486dc TI |
281 | |
282 | err_setup_res: | |
283 | fjes_free_resources(adapter); | |
284 | return result; | |
285 | } | |
286 | ||
287 | /* fjes_close - Disables a network interface */ | |
288 | static int fjes_close(struct net_device *netdev) | |
289 | { | |
290 | struct fjes_adapter *adapter = netdev_priv(netdev); | |
291 | struct fjes_hw *hw = &adapter->hw; | |
bd5a2569 | 292 | unsigned long flags; |
e5d486dc TI |
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 | ||
bd5a2569 | 302 | spin_lock_irqsave(&hw->rx_status_lock, flags); |
e5d486dc TI |
303 | for (epidx = 0; epidx < hw->max_epid; epidx++) { |
304 | if (epidx == hw->my_epid) | |
305 | continue; | |
306 | ||
bd5a2569 TI |
307 | if (fjes_hw_get_partner_ep_status(hw, epidx) == |
308 | EP_PARTNER_SHARED) | |
309 | adapter->hw.ep_shm_info[epidx] | |
310 | .tx.info->v1i.rx_status &= | |
311 | ~FJES_RX_POLL_WORK; | |
e5d486dc | 312 | } |
bd5a2569 | 313 | spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
e5d486dc TI |
314 | |
315 | fjes_free_irq(adapter); | |
316 | ||
8edb62a8 | 317 | cancel_delayed_work_sync(&adapter->interrupt_watch_task); |
8fc4cadb TI |
318 | cancel_work_sync(&adapter->unshare_watch_task); |
319 | adapter->unshare_watch_bitmask = 0; | |
b772b9dc | 320 | cancel_work_sync(&adapter->raise_intr_rxdata_task); |
ac63b947 | 321 | cancel_work_sync(&adapter->tx_stall_task); |
b772b9dc | 322 | |
785f28e0 | 323 | cancel_work_sync(&hw->update_zone_task); |
b5a9152d | 324 | cancel_work_sync(&hw->epstop_task); |
785f28e0 | 325 | |
e5d486dc TI |
326 | fjes_hw_wait_epstop(hw); |
327 | ||
328 | fjes_free_resources(adapter); | |
329 | ||
330 | return 0; | |
331 | } | |
332 | ||
333 | static int fjes_setup_resources(struct fjes_adapter *adapter) | |
334 | { | |
335 | struct net_device *netdev = adapter->netdev; | |
336 | struct ep_share_mem_info *buf_pair; | |
337 | struct fjes_hw *hw = &adapter->hw; | |
bd5a2569 | 338 | unsigned long flags; |
e5d486dc TI |
339 | int result; |
340 | int epidx; | |
341 | ||
342 | mutex_lock(&hw->hw_info.lock); | |
343 | result = fjes_hw_request_info(hw); | |
344 | switch (result) { | |
345 | case 0: | |
346 | for (epidx = 0; epidx < hw->max_epid; epidx++) { | |
347 | hw->ep_shm_info[epidx].es_status = | |
348 | hw->hw_info.res_buf->info.info[epidx].es_status; | |
349 | hw->ep_shm_info[epidx].zone = | |
350 | hw->hw_info.res_buf->info.info[epidx].zone; | |
351 | } | |
352 | break; | |
353 | default: | |
354 | case -ENOMSG: | |
355 | case -EBUSY: | |
356 | adapter->force_reset = true; | |
357 | ||
358 | mutex_unlock(&hw->hw_info.lock); | |
359 | return result; | |
360 | } | |
361 | mutex_unlock(&hw->hw_info.lock); | |
362 | ||
363 | for (epidx = 0; epidx < (hw->max_epid); epidx++) { | |
364 | if ((epidx != hw->my_epid) && | |
365 | (hw->ep_shm_info[epidx].es_status == | |
366 | FJES_ZONING_STATUS_ENABLE)) { | |
367 | fjes_hw_raise_interrupt(hw, epidx, | |
368 | REG_ICTL_MASK_INFO_UPDATE); | |
369 | } | |
370 | } | |
371 | ||
372 | msleep(FJES_OPEN_ZONE_UPDATE_WAIT * hw->max_epid); | |
373 | ||
374 | for (epidx = 0; epidx < (hw->max_epid); epidx++) { | |
375 | if (epidx == hw->my_epid) | |
376 | continue; | |
377 | ||
378 | buf_pair = &hw->ep_shm_info[epidx]; | |
379 | ||
bd5a2569 | 380 | spin_lock_irqsave(&hw->rx_status_lock, flags); |
e5d486dc TI |
381 | fjes_hw_setup_epbuf(&buf_pair->tx, netdev->dev_addr, |
382 | netdev->mtu); | |
bd5a2569 | 383 | spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
e5d486dc TI |
384 | |
385 | if (fjes_hw_epid_is_same_zone(hw, epidx)) { | |
386 | mutex_lock(&hw->hw_info.lock); | |
387 | result = | |
388 | fjes_hw_register_buff_addr(hw, epidx, buf_pair); | |
389 | mutex_unlock(&hw->hw_info.lock); | |
390 | ||
391 | switch (result) { | |
392 | case 0: | |
393 | break; | |
394 | case -ENOMSG: | |
395 | case -EBUSY: | |
396 | default: | |
397 | adapter->force_reset = true; | |
398 | return result; | |
399 | } | |
400 | } | |
401 | } | |
402 | ||
403 | return 0; | |
404 | } | |
405 | ||
406 | static void fjes_free_resources(struct fjes_adapter *adapter) | |
407 | { | |
408 | struct net_device *netdev = adapter->netdev; | |
409 | struct fjes_device_command_param param; | |
410 | struct ep_share_mem_info *buf_pair; | |
411 | struct fjes_hw *hw = &adapter->hw; | |
412 | bool reset_flag = false; | |
bd5a2569 | 413 | unsigned long flags; |
e5d486dc TI |
414 | int result; |
415 | int epidx; | |
416 | ||
417 | for (epidx = 0; epidx < hw->max_epid; epidx++) { | |
418 | if (epidx == hw->my_epid) | |
419 | continue; | |
420 | ||
421 | mutex_lock(&hw->hw_info.lock); | |
422 | result = fjes_hw_unregister_buff_addr(hw, epidx); | |
423 | mutex_unlock(&hw->hw_info.lock); | |
424 | ||
425 | if (result) | |
426 | reset_flag = true; | |
427 | ||
428 | buf_pair = &hw->ep_shm_info[epidx]; | |
429 | ||
bd5a2569 | 430 | spin_lock_irqsave(&hw->rx_status_lock, flags); |
e5d486dc TI |
431 | fjes_hw_setup_epbuf(&buf_pair->tx, |
432 | netdev->dev_addr, netdev->mtu); | |
bd5a2569 | 433 | spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
e5d486dc TI |
434 | |
435 | clear_bit(epidx, &hw->txrx_stop_req_bit); | |
436 | } | |
437 | ||
438 | if (reset_flag || adapter->force_reset) { | |
439 | result = fjes_hw_reset(hw); | |
440 | ||
441 | adapter->force_reset = false; | |
442 | ||
443 | if (result) | |
444 | adapter->open_guard = true; | |
445 | ||
446 | hw->hw_info.buffer_share_bit = 0; | |
447 | ||
448 | memset((void *)¶m, 0, sizeof(param)); | |
449 | ||
450 | param.req_len = hw->hw_info.req_buf_size; | |
451 | param.req_start = __pa(hw->hw_info.req_buf); | |
452 | param.res_len = hw->hw_info.res_buf_size; | |
453 | param.res_start = __pa(hw->hw_info.res_buf); | |
454 | param.share_start = __pa(hw->hw_info.share->ep_status); | |
455 | ||
456 | fjes_hw_init_command_registers(hw, ¶m); | |
457 | } | |
458 | } | |
459 | ||
ac63b947 TI |
460 | static void fjes_tx_stall_task(struct work_struct *work) |
461 | { | |
462 | struct fjes_adapter *adapter = container_of(work, | |
463 | struct fjes_adapter, tx_stall_task); | |
464 | struct net_device *netdev = adapter->netdev; | |
465 | struct fjes_hw *hw = &adapter->hw; | |
466 | int all_queue_available, sendable; | |
467 | enum ep_partner_status pstatus; | |
468 | int max_epid, my_epid, epid; | |
469 | union ep_buffer_info *info; | |
470 | int i; | |
471 | ||
472 | if (((long)jiffies - | |
4d0e9657 | 473 | dev_trans_start(netdev)) > FJES_TX_TX_STALL_TIMEOUT) { |
ac63b947 TI |
474 | netif_wake_queue(netdev); |
475 | return; | |
476 | } | |
477 | ||
478 | my_epid = hw->my_epid; | |
479 | max_epid = hw->max_epid; | |
480 | ||
481 | for (i = 0; i < 5; i++) { | |
482 | all_queue_available = 1; | |
483 | ||
484 | for (epid = 0; epid < max_epid; epid++) { | |
485 | if (my_epid == epid) | |
486 | continue; | |
487 | ||
488 | pstatus = fjes_hw_get_partner_ep_status(hw, epid); | |
489 | sendable = (pstatus == EP_PARTNER_SHARED); | |
490 | if (!sendable) | |
491 | continue; | |
492 | ||
493 | info = adapter->hw.ep_shm_info[epid].tx.info; | |
494 | ||
16bbec3a TI |
495 | if (!(info->v1i.rx_status & FJES_RX_MTU_CHANGING_DONE)) |
496 | return; | |
497 | ||
ac63b947 TI |
498 | if (EP_RING_FULL(info->v1i.head, info->v1i.tail, |
499 | info->v1i.count_max)) { | |
500 | all_queue_available = 0; | |
501 | break; | |
502 | } | |
503 | } | |
504 | ||
505 | if (all_queue_available) { | |
506 | netif_wake_queue(netdev); | |
507 | return; | |
508 | } | |
509 | } | |
510 | ||
511 | usleep_range(50, 100); | |
512 | ||
513 | queue_work(adapter->txrx_wq, &adapter->tx_stall_task); | |
514 | } | |
515 | ||
ff5b4210 TI |
516 | static void fjes_force_close_task(struct work_struct *work) |
517 | { | |
518 | struct fjes_adapter *adapter = container_of(work, | |
519 | struct fjes_adapter, force_close_task); | |
520 | struct net_device *netdev = adapter->netdev; | |
521 | ||
522 | rtnl_lock(); | |
523 | dev_close(netdev); | |
524 | rtnl_unlock(); | |
525 | } | |
526 | ||
b772b9dc TI |
527 | static void fjes_raise_intr_rxdata_task(struct work_struct *work) |
528 | { | |
529 | struct fjes_adapter *adapter = container_of(work, | |
530 | struct fjes_adapter, raise_intr_rxdata_task); | |
531 | struct fjes_hw *hw = &adapter->hw; | |
532 | enum ep_partner_status pstatus; | |
533 | int max_epid, my_epid, epid; | |
534 | ||
535 | my_epid = hw->my_epid; | |
536 | max_epid = hw->max_epid; | |
537 | ||
538 | for (epid = 0; epid < max_epid; epid++) | |
539 | hw->ep_shm_info[epid].tx_status_work = 0; | |
540 | ||
541 | for (epid = 0; epid < max_epid; epid++) { | |
542 | if (epid == my_epid) | |
543 | continue; | |
544 | ||
545 | pstatus = fjes_hw_get_partner_ep_status(hw, epid); | |
546 | if (pstatus == EP_PARTNER_SHARED) { | |
547 | hw->ep_shm_info[epid].tx_status_work = | |
548 | hw->ep_shm_info[epid].tx.info->v1i.tx_status; | |
549 | ||
550 | if (hw->ep_shm_info[epid].tx_status_work == | |
551 | FJES_TX_DELAY_SEND_PENDING) { | |
552 | hw->ep_shm_info[epid].tx.info->v1i.tx_status = | |
553 | FJES_TX_DELAY_SEND_NONE; | |
554 | } | |
555 | } | |
556 | } | |
557 | ||
558 | for (epid = 0; epid < max_epid; epid++) { | |
559 | if (epid == my_epid) | |
560 | continue; | |
561 | ||
562 | pstatus = fjes_hw_get_partner_ep_status(hw, epid); | |
563 | if ((hw->ep_shm_info[epid].tx_status_work == | |
564 | FJES_TX_DELAY_SEND_PENDING) && | |
565 | (pstatus == EP_PARTNER_SHARED) && | |
19a0a7fd TI |
566 | !(hw->ep_shm_info[epid].rx.info->v1i.rx_status & |
567 | FJES_RX_POLL_WORK)) { | |
b772b9dc TI |
568 | fjes_hw_raise_interrupt(hw, epid, |
569 | REG_ICTL_MASK_RX_DATA); | |
570 | } | |
571 | } | |
572 | ||
573 | usleep_range(500, 1000); | |
574 | } | |
575 | ||
9acf51cb TI |
576 | static int fjes_tx_send(struct fjes_adapter *adapter, int dest, |
577 | void *data, size_t len) | |
578 | { | |
579 | int retval; | |
580 | ||
581 | retval = fjes_hw_epbuf_tx_pkt_send(&adapter->hw.ep_shm_info[dest].tx, | |
582 | data, len); | |
583 | if (retval) | |
584 | return retval; | |
585 | ||
586 | adapter->hw.ep_shm_info[dest].tx.info->v1i.tx_status = | |
587 | FJES_TX_DELAY_SEND_PENDING; | |
b772b9dc TI |
588 | if (!work_pending(&adapter->raise_intr_rxdata_task)) |
589 | queue_work(adapter->txrx_wq, | |
590 | &adapter->raise_intr_rxdata_task); | |
9acf51cb TI |
591 | |
592 | retval = 0; | |
593 | return retval; | |
594 | } | |
595 | ||
596 | static netdev_tx_t | |
597 | fjes_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
598 | { | |
599 | struct fjes_adapter *adapter = netdev_priv(netdev); | |
600 | struct fjes_hw *hw = &adapter->hw; | |
601 | ||
602 | int max_epid, my_epid, dest_epid; | |
603 | enum ep_partner_status pstatus; | |
604 | struct netdev_queue *cur_queue; | |
605 | char shortpkt[VLAN_ETH_HLEN]; | |
606 | bool is_multi, vlan; | |
607 | struct ethhdr *eth; | |
608 | u16 queue_no = 0; | |
609 | u16 vlan_id = 0; | |
610 | netdev_tx_t ret; | |
611 | char *data; | |
612 | int len; | |
613 | ||
614 | ret = NETDEV_TX_OK; | |
615 | is_multi = false; | |
616 | cur_queue = netdev_get_tx_queue(netdev, queue_no); | |
617 | ||
618 | eth = (struct ethhdr *)skb->data; | |
619 | my_epid = hw->my_epid; | |
620 | ||
621 | vlan = (vlan_get_tag(skb, &vlan_id) == 0) ? true : false; | |
622 | ||
623 | data = skb->data; | |
624 | len = skb->len; | |
625 | ||
626 | if (is_multicast_ether_addr(eth->h_dest)) { | |
627 | dest_epid = 0; | |
628 | max_epid = hw->max_epid; | |
629 | is_multi = true; | |
630 | } else if (is_local_ether_addr(eth->h_dest)) { | |
631 | dest_epid = eth->h_dest[ETH_ALEN - 1]; | |
632 | max_epid = dest_epid + 1; | |
633 | ||
634 | if ((eth->h_dest[0] == 0x02) && | |
635 | (0x00 == (eth->h_dest[1] | eth->h_dest[2] | | |
636 | eth->h_dest[3] | eth->h_dest[4])) && | |
637 | (dest_epid < hw->max_epid)) { | |
638 | ; | |
639 | } else { | |
640 | dest_epid = 0; | |
641 | max_epid = 0; | |
642 | ret = NETDEV_TX_OK; | |
643 | ||
644 | adapter->stats64.tx_packets += 1; | |
645 | hw->ep_shm_info[my_epid].net_stats.tx_packets += 1; | |
646 | adapter->stats64.tx_bytes += len; | |
647 | hw->ep_shm_info[my_epid].net_stats.tx_bytes += len; | |
648 | } | |
649 | } else { | |
650 | dest_epid = 0; | |
651 | max_epid = 0; | |
652 | ret = NETDEV_TX_OK; | |
653 | ||
654 | adapter->stats64.tx_packets += 1; | |
655 | hw->ep_shm_info[my_epid].net_stats.tx_packets += 1; | |
656 | adapter->stats64.tx_bytes += len; | |
657 | hw->ep_shm_info[my_epid].net_stats.tx_bytes += len; | |
658 | } | |
659 | ||
660 | for (; dest_epid < max_epid; dest_epid++) { | |
661 | if (my_epid == dest_epid) | |
662 | continue; | |
663 | ||
664 | pstatus = fjes_hw_get_partner_ep_status(hw, dest_epid); | |
665 | if (pstatus != EP_PARTNER_SHARED) { | |
666 | ret = NETDEV_TX_OK; | |
667 | } else if (!fjes_hw_check_epbuf_version( | |
668 | &adapter->hw.ep_shm_info[dest_epid].rx, 0)) { | |
669 | /* version is NOT 0 */ | |
670 | adapter->stats64.tx_carrier_errors += 1; | |
3c3bd4a9 | 671 | hw->ep_shm_info[dest_epid].net_stats |
9acf51cb TI |
672 | .tx_carrier_errors += 1; |
673 | ||
674 | ret = NETDEV_TX_OK; | |
675 | } else if (!fjes_hw_check_mtu( | |
676 | &adapter->hw.ep_shm_info[dest_epid].rx, | |
677 | netdev->mtu)) { | |
678 | adapter->stats64.tx_dropped += 1; | |
3c3bd4a9 | 679 | hw->ep_shm_info[dest_epid].net_stats.tx_dropped += 1; |
9acf51cb | 680 | adapter->stats64.tx_errors += 1; |
3c3bd4a9 | 681 | hw->ep_shm_info[dest_epid].net_stats.tx_errors += 1; |
9acf51cb TI |
682 | |
683 | ret = NETDEV_TX_OK; | |
684 | } else if (vlan && | |
685 | !fjes_hw_check_vlan_id( | |
686 | &adapter->hw.ep_shm_info[dest_epid].rx, | |
687 | vlan_id)) { | |
688 | ret = NETDEV_TX_OK; | |
689 | } else { | |
690 | if (len < VLAN_ETH_HLEN) { | |
691 | memset(shortpkt, 0, VLAN_ETH_HLEN); | |
692 | memcpy(shortpkt, skb->data, skb->len); | |
693 | len = VLAN_ETH_HLEN; | |
694 | data = shortpkt; | |
695 | } | |
696 | ||
697 | if (adapter->tx_retry_count == 0) { | |
698 | adapter->tx_start_jiffies = jiffies; | |
699 | adapter->tx_retry_count = 1; | |
700 | } else { | |
701 | adapter->tx_retry_count++; | |
702 | } | |
703 | ||
704 | if (fjes_tx_send(adapter, dest_epid, data, len)) { | |
705 | if (is_multi) { | |
706 | ret = NETDEV_TX_OK; | |
707 | } else if ( | |
708 | ((long)jiffies - | |
709 | (long)adapter->tx_start_jiffies) >= | |
710 | FJES_TX_RETRY_TIMEOUT) { | |
711 | adapter->stats64.tx_fifo_errors += 1; | |
3c3bd4a9 | 712 | hw->ep_shm_info[dest_epid].net_stats |
9acf51cb TI |
713 | .tx_fifo_errors += 1; |
714 | adapter->stats64.tx_errors += 1; | |
3c3bd4a9 | 715 | hw->ep_shm_info[dest_epid].net_stats |
9acf51cb TI |
716 | .tx_errors += 1; |
717 | ||
718 | ret = NETDEV_TX_OK; | |
719 | } else { | |
860e9538 | 720 | netif_trans_update(netdev); |
9acf51cb TI |
721 | netif_tx_stop_queue(cur_queue); |
722 | ||
ac63b947 TI |
723 | if (!work_pending(&adapter->tx_stall_task)) |
724 | queue_work(adapter->txrx_wq, | |
725 | &adapter->tx_stall_task); | |
726 | ||
9acf51cb TI |
727 | ret = NETDEV_TX_BUSY; |
728 | } | |
729 | } else { | |
730 | if (!is_multi) { | |
731 | adapter->stats64.tx_packets += 1; | |
3c3bd4a9 | 732 | hw->ep_shm_info[dest_epid].net_stats |
9acf51cb TI |
733 | .tx_packets += 1; |
734 | adapter->stats64.tx_bytes += len; | |
3c3bd4a9 | 735 | hw->ep_shm_info[dest_epid].net_stats |
9acf51cb TI |
736 | .tx_bytes += len; |
737 | } | |
738 | ||
739 | adapter->tx_retry_count = 0; | |
740 | ret = NETDEV_TX_OK; | |
741 | } | |
742 | } | |
743 | } | |
744 | ||
745 | if (ret == NETDEV_TX_OK) { | |
746 | dev_kfree_skb(skb); | |
747 | if (is_multi) { | |
748 | adapter->stats64.tx_packets += 1; | |
749 | hw->ep_shm_info[my_epid].net_stats.tx_packets += 1; | |
750 | adapter->stats64.tx_bytes += 1; | |
751 | hw->ep_shm_info[my_epid].net_stats.tx_bytes += len; | |
752 | } | |
753 | } | |
754 | ||
755 | return ret; | |
756 | } | |
757 | ||
4393e767 TI |
758 | static void fjes_tx_retry(struct net_device *netdev) |
759 | { | |
760 | struct netdev_queue *queue = netdev_get_tx_queue(netdev, 0); | |
761 | ||
762 | netif_tx_wake_queue(queue); | |
763 | } | |
764 | ||
879bc9a3 TI |
765 | static struct rtnl_link_stats64 * |
766 | fjes_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats) | |
767 | { | |
768 | struct fjes_adapter *adapter = netdev_priv(netdev); | |
769 | ||
770 | memcpy(stats, &adapter->stats64, sizeof(struct rtnl_link_stats64)); | |
771 | ||
772 | return stats; | |
773 | } | |
774 | ||
b9e23a67 TI |
775 | static int fjes_change_mtu(struct net_device *netdev, int new_mtu) |
776 | { | |
16bbec3a | 777 | struct fjes_adapter *adapter = netdev_priv(netdev); |
b9e23a67 | 778 | bool running = netif_running(netdev); |
16bbec3a | 779 | struct fjes_hw *hw = &adapter->hw; |
bd5a2569 | 780 | unsigned long flags; |
16bbec3a TI |
781 | int ret = -EINVAL; |
782 | int idx, epidx; | |
b9e23a67 TI |
783 | |
784 | for (idx = 0; fjes_support_mtu[idx] != 0; idx++) { | |
785 | if (new_mtu <= fjes_support_mtu[idx]) { | |
786 | new_mtu = fjes_support_mtu[idx]; | |
787 | if (new_mtu == netdev->mtu) | |
788 | return 0; | |
789 | ||
16bbec3a TI |
790 | ret = 0; |
791 | break; | |
792 | } | |
793 | } | |
794 | ||
795 | if (ret) | |
796 | return ret; | |
b9e23a67 | 797 | |
16bbec3a | 798 | if (running) { |
bd5a2569 | 799 | spin_lock_irqsave(&hw->rx_status_lock, flags); |
16bbec3a TI |
800 | for (epidx = 0; epidx < hw->max_epid; epidx++) { |
801 | if (epidx == hw->my_epid) | |
802 | continue; | |
803 | hw->ep_shm_info[epidx].tx.info->v1i.rx_status &= | |
804 | ~FJES_RX_MTU_CHANGING_DONE; | |
805 | } | |
bd5a2569 TI |
806 | spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
807 | ||
16bbec3a TI |
808 | netif_tx_stop_all_queues(netdev); |
809 | netif_carrier_off(netdev); | |
810 | cancel_work_sync(&adapter->tx_stall_task); | |
811 | napi_disable(&adapter->napi); | |
b9e23a67 | 812 | |
16bbec3a | 813 | msleep(1000); |
b9e23a67 | 814 | |
16bbec3a TI |
815 | netif_tx_stop_all_queues(netdev); |
816 | } | |
817 | ||
818 | netdev->mtu = new_mtu; | |
819 | ||
820 | if (running) { | |
821 | for (epidx = 0; epidx < hw->max_epid; epidx++) { | |
822 | if (epidx == hw->my_epid) | |
823 | continue; | |
824 | ||
bd5a2569 | 825 | spin_lock_irqsave(&hw->rx_status_lock, flags); |
16bbec3a TI |
826 | fjes_hw_setup_epbuf(&hw->ep_shm_info[epidx].tx, |
827 | netdev->dev_addr, | |
828 | netdev->mtu); | |
16bbec3a TI |
829 | |
830 | hw->ep_shm_info[epidx].tx.info->v1i.rx_status |= | |
831 | FJES_RX_MTU_CHANGING_DONE; | |
bd5a2569 | 832 | spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
b9e23a67 | 833 | } |
16bbec3a TI |
834 | |
835 | netif_tx_wake_all_queues(netdev); | |
836 | netif_carrier_on(netdev); | |
837 | napi_enable(&adapter->napi); | |
bd5a2569 | 838 | napi_schedule(&adapter->napi); |
b9e23a67 TI |
839 | } |
840 | ||
16bbec3a | 841 | return ret; |
b9e23a67 TI |
842 | } |
843 | ||
3e3fedda TI |
844 | static int fjes_vlan_rx_add_vid(struct net_device *netdev, |
845 | __be16 proto, u16 vid) | |
846 | { | |
847 | struct fjes_adapter *adapter = netdev_priv(netdev); | |
848 | bool ret = true; | |
849 | int epid; | |
850 | ||
851 | for (epid = 0; epid < adapter->hw.max_epid; epid++) { | |
852 | if (epid == adapter->hw.my_epid) | |
853 | continue; | |
854 | ||
855 | if (!fjes_hw_check_vlan_id( | |
856 | &adapter->hw.ep_shm_info[epid].tx, vid)) | |
857 | ret = fjes_hw_set_vlan_id( | |
858 | &adapter->hw.ep_shm_info[epid].tx, vid); | |
859 | } | |
860 | ||
861 | return ret ? 0 : -ENOSPC; | |
862 | } | |
863 | ||
864 | static int fjes_vlan_rx_kill_vid(struct net_device *netdev, | |
865 | __be16 proto, u16 vid) | |
866 | { | |
867 | struct fjes_adapter *adapter = netdev_priv(netdev); | |
868 | int epid; | |
869 | ||
870 | for (epid = 0; epid < adapter->hw.max_epid; epid++) { | |
871 | if (epid == adapter->hw.my_epid) | |
872 | continue; | |
873 | ||
874 | fjes_hw_del_vlan_id(&adapter->hw.ep_shm_info[epid].tx, vid); | |
875 | } | |
876 | ||
877 | return 0; | |
878 | } | |
879 | ||
cb79eaae TI |
880 | static void fjes_txrx_stop_req_irq(struct fjes_adapter *adapter, |
881 | int src_epid) | |
882 | { | |
883 | struct fjes_hw *hw = &adapter->hw; | |
884 | enum ep_partner_status status; | |
bd5a2569 | 885 | unsigned long flags; |
cb79eaae TI |
886 | |
887 | status = fjes_hw_get_partner_ep_status(hw, src_epid); | |
888 | switch (status) { | |
889 | case EP_PARTNER_UNSHARE: | |
890 | case EP_PARTNER_COMPLETE: | |
891 | default: | |
892 | break; | |
893 | case EP_PARTNER_WAITING: | |
894 | if (src_epid < hw->my_epid) { | |
bd5a2569 | 895 | spin_lock_irqsave(&hw->rx_status_lock, flags); |
cb79eaae TI |
896 | hw->ep_shm_info[src_epid].tx.info->v1i.rx_status |= |
897 | FJES_RX_STOP_REQ_DONE; | |
bd5a2569 | 898 | spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
cb79eaae TI |
899 | |
900 | clear_bit(src_epid, &hw->txrx_stop_req_bit); | |
901 | set_bit(src_epid, &adapter->unshare_watch_bitmask); | |
902 | ||
903 | if (!work_pending(&adapter->unshare_watch_task)) | |
904 | queue_work(adapter->control_wq, | |
905 | &adapter->unshare_watch_task); | |
906 | } | |
907 | break; | |
908 | case EP_PARTNER_SHARED: | |
909 | if (hw->ep_shm_info[src_epid].rx.info->v1i.rx_status & | |
910 | FJES_RX_STOP_REQ_REQUEST) { | |
911 | set_bit(src_epid, &hw->epstop_req_bit); | |
912 | if (!work_pending(&hw->epstop_task)) | |
913 | queue_work(adapter->control_wq, | |
914 | &hw->epstop_task); | |
915 | } | |
916 | break; | |
917 | } | |
918 | } | |
919 | ||
920 | static void fjes_stop_req_irq(struct fjes_adapter *adapter, int src_epid) | |
921 | { | |
922 | struct fjes_hw *hw = &adapter->hw; | |
923 | enum ep_partner_status status; | |
bd5a2569 | 924 | unsigned long flags; |
cb79eaae TI |
925 | |
926 | set_bit(src_epid, &hw->hw_info.buffer_unshare_reserve_bit); | |
927 | ||
928 | status = fjes_hw_get_partner_ep_status(hw, src_epid); | |
929 | switch (status) { | |
930 | case EP_PARTNER_WAITING: | |
bd5a2569 | 931 | spin_lock_irqsave(&hw->rx_status_lock, flags); |
cb79eaae TI |
932 | hw->ep_shm_info[src_epid].tx.info->v1i.rx_status |= |
933 | FJES_RX_STOP_REQ_DONE; | |
bd5a2569 | 934 | spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
cb79eaae TI |
935 | clear_bit(src_epid, &hw->txrx_stop_req_bit); |
936 | /* fall through */ | |
937 | case EP_PARTNER_UNSHARE: | |
938 | case EP_PARTNER_COMPLETE: | |
939 | default: | |
940 | set_bit(src_epid, &adapter->unshare_watch_bitmask); | |
941 | if (!work_pending(&adapter->unshare_watch_task)) | |
942 | queue_work(adapter->control_wq, | |
943 | &adapter->unshare_watch_task); | |
944 | break; | |
945 | case EP_PARTNER_SHARED: | |
946 | set_bit(src_epid, &hw->epstop_req_bit); | |
947 | ||
948 | if (!work_pending(&hw->epstop_task)) | |
949 | queue_work(adapter->control_wq, &hw->epstop_task); | |
950 | break; | |
951 | } | |
952 | } | |
953 | ||
785f28e0 TI |
954 | static void fjes_update_zone_irq(struct fjes_adapter *adapter, |
955 | int src_epid) | |
956 | { | |
957 | struct fjes_hw *hw = &adapter->hw; | |
958 | ||
959 | if (!work_pending(&hw->update_zone_task)) | |
960 | queue_work(adapter->control_wq, &hw->update_zone_task); | |
961 | } | |
962 | ||
e5d486dc TI |
963 | static irqreturn_t fjes_intr(int irq, void *data) |
964 | { | |
965 | struct fjes_adapter *adapter = data; | |
966 | struct fjes_hw *hw = &adapter->hw; | |
967 | irqreturn_t ret; | |
968 | u32 icr; | |
969 | ||
970 | icr = fjes_hw_capture_interrupt_status(hw); | |
971 | ||
26585930 TI |
972 | if (icr & REG_IS_MASK_IS_ASSERT) { |
973 | if (icr & REG_ICTL_MASK_RX_DATA) | |
974 | fjes_rx_irq(adapter, icr & REG_IS_MASK_EPID); | |
975 | ||
cb79eaae TI |
976 | if (icr & REG_ICTL_MASK_DEV_STOP_REQ) |
977 | fjes_stop_req_irq(adapter, icr & REG_IS_MASK_EPID); | |
978 | ||
979 | if (icr & REG_ICTL_MASK_TXRX_STOP_REQ) | |
980 | fjes_txrx_stop_req_irq(adapter, icr & REG_IS_MASK_EPID); | |
981 | ||
982 | if (icr & REG_ICTL_MASK_TXRX_STOP_DONE) | |
983 | fjes_hw_set_irqmask(hw, | |
984 | REG_ICTL_MASK_TXRX_STOP_DONE, true); | |
985 | ||
785f28e0 TI |
986 | if (icr & REG_ICTL_MASK_INFO_UPDATE) |
987 | fjes_update_zone_irq(adapter, icr & REG_IS_MASK_EPID); | |
988 | ||
e5d486dc | 989 | ret = IRQ_HANDLED; |
26585930 | 990 | } else { |
e5d486dc | 991 | ret = IRQ_NONE; |
26585930 | 992 | } |
e5d486dc TI |
993 | |
994 | return ret; | |
995 | } | |
996 | ||
26585930 TI |
997 | static int fjes_rxframe_search_exist(struct fjes_adapter *adapter, |
998 | int start_epid) | |
999 | { | |
1000 | struct fjes_hw *hw = &adapter->hw; | |
1001 | enum ep_partner_status pstatus; | |
1002 | int max_epid, cur_epid; | |
1003 | int i; | |
1004 | ||
1005 | max_epid = hw->max_epid; | |
1006 | start_epid = (start_epid + 1 + max_epid) % max_epid; | |
1007 | ||
1008 | for (i = 0; i < max_epid; i++) { | |
1009 | cur_epid = (start_epid + i) % max_epid; | |
1010 | if (cur_epid == hw->my_epid) | |
1011 | continue; | |
1012 | ||
1013 | pstatus = fjes_hw_get_partner_ep_status(hw, cur_epid); | |
1014 | if (pstatus == EP_PARTNER_SHARED) { | |
1015 | if (!fjes_hw_epbuf_rx_is_empty( | |
1016 | &hw->ep_shm_info[cur_epid].rx)) | |
1017 | return cur_epid; | |
1018 | } | |
1019 | } | |
1020 | return -1; | |
1021 | } | |
1022 | ||
1023 | static void *fjes_rxframe_get(struct fjes_adapter *adapter, size_t *psize, | |
1024 | int *cur_epid) | |
1025 | { | |
1026 | void *frame; | |
1027 | ||
1028 | *cur_epid = fjes_rxframe_search_exist(adapter, *cur_epid); | |
1029 | if (*cur_epid < 0) | |
1030 | return NULL; | |
1031 | ||
1032 | frame = | |
1033 | fjes_hw_epbuf_rx_curpkt_get_addr( | |
1034 | &adapter->hw.ep_shm_info[*cur_epid].rx, psize); | |
1035 | ||
1036 | return frame; | |
1037 | } | |
1038 | ||
1039 | static void fjes_rxframe_release(struct fjes_adapter *adapter, int cur_epid) | |
1040 | { | |
1041 | fjes_hw_epbuf_rx_curpkt_drop(&adapter->hw.ep_shm_info[cur_epid].rx); | |
1042 | } | |
1043 | ||
1044 | static void fjes_rx_irq(struct fjes_adapter *adapter, int src_epid) | |
1045 | { | |
1046 | struct fjes_hw *hw = &adapter->hw; | |
1047 | ||
1048 | fjes_hw_set_irqmask(hw, REG_ICTL_MASK_RX_DATA, true); | |
1049 | ||
1050 | adapter->unset_rx_last = true; | |
1051 | napi_schedule(&adapter->napi); | |
1052 | } | |
1053 | ||
1054 | static int fjes_poll(struct napi_struct *napi, int budget) | |
1055 | { | |
1056 | struct fjes_adapter *adapter = | |
1057 | container_of(napi, struct fjes_adapter, napi); | |
1058 | struct net_device *netdev = napi->dev; | |
1059 | struct fjes_hw *hw = &adapter->hw; | |
1060 | struct sk_buff *skb; | |
1061 | int work_done = 0; | |
1062 | int cur_epid = 0; | |
1063 | int epidx; | |
1064 | size_t frame_len; | |
1065 | void *frame; | |
1066 | ||
bd5a2569 | 1067 | spin_lock(&hw->rx_status_lock); |
26585930 TI |
1068 | for (epidx = 0; epidx < hw->max_epid; epidx++) { |
1069 | if (epidx == hw->my_epid) | |
1070 | continue; | |
1071 | ||
bd5a2569 TI |
1072 | if (fjes_hw_get_partner_ep_status(hw, epidx) == |
1073 | EP_PARTNER_SHARED) | |
1074 | adapter->hw.ep_shm_info[epidx] | |
1075 | .tx.info->v1i.rx_status |= FJES_RX_POLL_WORK; | |
26585930 | 1076 | } |
bd5a2569 | 1077 | spin_unlock(&hw->rx_status_lock); |
26585930 TI |
1078 | |
1079 | while (work_done < budget) { | |
1080 | prefetch(&adapter->hw); | |
1081 | frame = fjes_rxframe_get(adapter, &frame_len, &cur_epid); | |
1082 | ||
1083 | if (frame) { | |
1084 | skb = napi_alloc_skb(napi, frame_len); | |
1085 | if (!skb) { | |
1086 | adapter->stats64.rx_dropped += 1; | |
1087 | hw->ep_shm_info[cur_epid].net_stats | |
1088 | .rx_dropped += 1; | |
1089 | adapter->stats64.rx_errors += 1; | |
1090 | hw->ep_shm_info[cur_epid].net_stats | |
1091 | .rx_errors += 1; | |
1092 | } else { | |
1093 | memcpy(skb_put(skb, frame_len), | |
1094 | frame, frame_len); | |
1095 | skb->protocol = eth_type_trans(skb, netdev); | |
1096 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1097 | ||
1098 | netif_receive_skb(skb); | |
1099 | ||
1100 | work_done++; | |
1101 | ||
1102 | adapter->stats64.rx_packets += 1; | |
1103 | hw->ep_shm_info[cur_epid].net_stats | |
1104 | .rx_packets += 1; | |
1105 | adapter->stats64.rx_bytes += frame_len; | |
1106 | hw->ep_shm_info[cur_epid].net_stats | |
1107 | .rx_bytes += frame_len; | |
1108 | ||
1109 | if (is_multicast_ether_addr( | |
1110 | ((struct ethhdr *)frame)->h_dest)) { | |
1111 | adapter->stats64.multicast += 1; | |
1112 | hw->ep_shm_info[cur_epid].net_stats | |
1113 | .multicast += 1; | |
1114 | } | |
1115 | } | |
1116 | ||
1117 | fjes_rxframe_release(adapter, cur_epid); | |
1118 | adapter->unset_rx_last = true; | |
1119 | } else { | |
1120 | break; | |
1121 | } | |
1122 | } | |
1123 | ||
1124 | if (work_done < budget) { | |
1125 | napi_complete(napi); | |
1126 | ||
1127 | if (adapter->unset_rx_last) { | |
1128 | adapter->rx_last_jiffies = jiffies; | |
1129 | adapter->unset_rx_last = false; | |
1130 | } | |
1131 | ||
1132 | if (((long)jiffies - (long)adapter->rx_last_jiffies) < 3) { | |
1133 | napi_reschedule(napi); | |
1134 | } else { | |
bd5a2569 | 1135 | spin_lock(&hw->rx_status_lock); |
26585930 TI |
1136 | for (epidx = 0; epidx < hw->max_epid; epidx++) { |
1137 | if (epidx == hw->my_epid) | |
1138 | continue; | |
bd5a2569 TI |
1139 | if (fjes_hw_get_partner_ep_status(hw, epidx) == |
1140 | EP_PARTNER_SHARED) | |
1141 | adapter->hw.ep_shm_info[epidx].tx | |
1142 | .info->v1i.rx_status &= | |
26585930 TI |
1143 | ~FJES_RX_POLL_WORK; |
1144 | } | |
bd5a2569 | 1145 | spin_unlock(&hw->rx_status_lock); |
26585930 TI |
1146 | |
1147 | fjes_hw_set_irqmask(hw, REG_ICTL_MASK_RX_DATA, false); | |
1148 | } | |
1149 | } | |
1150 | ||
1151 | return work_done; | |
1152 | } | |
1153 | ||
658d439b TI |
1154 | /* fjes_probe - Device Initialization Routine */ |
1155 | static int fjes_probe(struct platform_device *plat_dev) | |
1156 | { | |
2fcbca68 TI |
1157 | struct fjes_adapter *adapter; |
1158 | struct net_device *netdev; | |
1159 | struct resource *res; | |
1160 | struct fjes_hw *hw; | |
1161 | int err; | |
1162 | ||
1163 | err = -ENOMEM; | |
1164 | netdev = alloc_netdev_mq(sizeof(struct fjes_adapter), "es%d", | |
1165 | NET_NAME_UNKNOWN, fjes_netdev_setup, | |
1166 | FJES_MAX_QUEUES); | |
1167 | ||
1168 | if (!netdev) | |
1169 | goto err_out; | |
1170 | ||
1171 | SET_NETDEV_DEV(netdev, &plat_dev->dev); | |
1172 | ||
1173 | dev_set_drvdata(&plat_dev->dev, netdev); | |
1174 | adapter = netdev_priv(netdev); | |
1175 | adapter->netdev = netdev; | |
1176 | adapter->plat_dev = plat_dev; | |
1177 | hw = &adapter->hw; | |
1178 | hw->back = adapter; | |
1179 | ||
1180 | /* setup the private structure */ | |
1181 | err = fjes_sw_init(adapter); | |
1182 | if (err) | |
1183 | goto err_free_netdev; | |
1184 | ||
ff5b4210 | 1185 | INIT_WORK(&adapter->force_close_task, fjes_force_close_task); |
2fcbca68 TI |
1186 | adapter->force_reset = false; |
1187 | adapter->open_guard = false; | |
1188 | ||
f2edc4e1 BS |
1189 | adapter->txrx_wq = alloc_workqueue(DRV_NAME "/txrx", WQ_MEM_RECLAIM, 0); |
1190 | adapter->control_wq = alloc_workqueue(DRV_NAME "/control", | |
1191 | WQ_MEM_RECLAIM, 0); | |
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); |