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c5aa9e3b LT |
1 | /* |
2 | * AMD 10Gb Ethernet driver | |
3 | * | |
4 | * This file is available to you under your choice of the following two | |
5 | * licenses: | |
6 | * | |
7 | * License 1: GPLv2 | |
8 | * | |
9 | * Copyright (c) 2014 Advanced Micro Devices, Inc. | |
10 | * | |
11 | * This file is free software; you may copy, redistribute and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation, either version 2 of the License, or (at | |
14 | * your option) any later version. | |
15 | * | |
16 | * This file is distributed in the hope that it will be useful, but | |
17 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | * General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
23 | * | |
24 | * This file incorporates work covered by the following copyright and | |
25 | * permission notice: | |
26 | * The Synopsys DWC ETHER XGMAC Software Driver and documentation | |
27 | * (hereinafter "Software") is an unsupported proprietary work of Synopsys, | |
28 | * Inc. unless otherwise expressly agreed to in writing between Synopsys | |
29 | * and you. | |
30 | * | |
31 | * The Software IS NOT an item of Licensed Software or Licensed Product | |
32 | * under any End User Software License Agreement or Agreement for Licensed | |
33 | * Product with Synopsys or any supplement thereto. Permission is hereby | |
34 | * granted, free of charge, to any person obtaining a copy of this software | |
35 | * annotated with this license and the Software, to deal in the Software | |
36 | * without restriction, including without limitation the rights to use, | |
37 | * copy, modify, merge, publish, distribute, sublicense, and/or sell copies | |
38 | * of the Software, and to permit persons to whom the Software is furnished | |
39 | * to do so, subject to the following conditions: | |
40 | * | |
41 | * The above copyright notice and this permission notice shall be included | |
42 | * in all copies or substantial portions of the Software. | |
43 | * | |
44 | * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" | |
45 | * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | |
46 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A | |
47 | * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS | |
48 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
49 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
50 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
51 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
52 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
53 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF | |
54 | * THE POSSIBILITY OF SUCH DAMAGE. | |
55 | * | |
56 | * | |
57 | * License 2: Modified BSD | |
58 | * | |
59 | * Copyright (c) 2014 Advanced Micro Devices, Inc. | |
60 | * All rights reserved. | |
61 | * | |
62 | * Redistribution and use in source and binary forms, with or without | |
63 | * modification, are permitted provided that the following conditions are met: | |
64 | * * Redistributions of source code must retain the above copyright | |
65 | * notice, this list of conditions and the following disclaimer. | |
66 | * * Redistributions in binary form must reproduce the above copyright | |
67 | * notice, this list of conditions and the following disclaimer in the | |
68 | * documentation and/or other materials provided with the distribution. | |
69 | * * Neither the name of Advanced Micro Devices, Inc. nor the | |
70 | * names of its contributors may be used to endorse or promote products | |
71 | * derived from this software without specific prior written permission. | |
72 | * | |
73 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
74 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
75 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
76 | * ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY | |
77 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
78 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
79 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
80 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
81 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
82 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
83 | * | |
84 | * This file incorporates work covered by the following copyright and | |
85 | * permission notice: | |
86 | * The Synopsys DWC ETHER XGMAC Software Driver and documentation | |
87 | * (hereinafter "Software") is an unsupported proprietary work of Synopsys, | |
88 | * Inc. unless otherwise expressly agreed to in writing between Synopsys | |
89 | * and you. | |
90 | * | |
91 | * The Software IS NOT an item of Licensed Software or Licensed Product | |
92 | * under any End User Software License Agreement or Agreement for Licensed | |
93 | * Product with Synopsys or any supplement thereto. Permission is hereby | |
94 | * granted, free of charge, to any person obtaining a copy of this software | |
95 | * annotated with this license and the Software, to deal in the Software | |
96 | * without restriction, including without limitation the rights to use, | |
97 | * copy, modify, merge, publish, distribute, sublicense, and/or sell copies | |
98 | * of the Software, and to permit persons to whom the Software is furnished | |
99 | * to do so, subject to the following conditions: | |
100 | * | |
101 | * The above copyright notice and this permission notice shall be included | |
102 | * in all copies or substantial portions of the Software. | |
103 | * | |
104 | * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" | |
105 | * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | |
106 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A | |
107 | * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS | |
108 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
109 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
110 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
111 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
112 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
113 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF | |
114 | * THE POSSIBILITY OF SUCH DAMAGE. | |
115 | */ | |
116 | ||
117 | #include <linux/module.h> | |
118 | #include <linux/device.h> | |
119 | #include <linux/platform_device.h> | |
120 | #include <linux/spinlock.h> | |
121 | #include <linux/netdevice.h> | |
122 | #include <linux/etherdevice.h> | |
123 | #include <linux/io.h> | |
124 | #include <linux/of.h> | |
125 | #include <linux/of_net.h> | |
126 | #include <linux/clk.h> | |
127 | ||
128 | #include "xgbe.h" | |
129 | #include "xgbe-common.h" | |
130 | ||
131 | ||
132 | MODULE_AUTHOR("Tom Lendacky <thomas.lendacky@amd.com>"); | |
133 | MODULE_LICENSE("Dual BSD/GPL"); | |
134 | MODULE_VERSION(XGBE_DRV_VERSION); | |
135 | MODULE_DESCRIPTION(XGBE_DRV_DESC); | |
136 | ||
137 | static struct xgbe_channel *xgbe_alloc_rings(struct xgbe_prv_data *pdata) | |
138 | { | |
139 | struct xgbe_channel *channel_mem, *channel; | |
140 | struct xgbe_ring *tx_ring, *rx_ring; | |
141 | unsigned int count, i; | |
142 | ||
143 | DBGPR("-->xgbe_alloc_rings\n"); | |
144 | ||
145 | count = max_t(unsigned int, pdata->tx_ring_count, pdata->rx_ring_count); | |
146 | ||
147 | channel_mem = devm_kcalloc(pdata->dev, count, | |
148 | sizeof(struct xgbe_channel), GFP_KERNEL); | |
149 | if (!channel_mem) | |
150 | return NULL; | |
151 | ||
152 | tx_ring = devm_kcalloc(pdata->dev, pdata->tx_ring_count, | |
153 | sizeof(struct xgbe_ring), GFP_KERNEL); | |
154 | if (!tx_ring) | |
155 | return NULL; | |
156 | ||
157 | rx_ring = devm_kcalloc(pdata->dev, pdata->rx_ring_count, | |
158 | sizeof(struct xgbe_ring), GFP_KERNEL); | |
159 | if (!rx_ring) | |
160 | return NULL; | |
161 | ||
162 | for (i = 0, channel = channel_mem; i < count; i++, channel++) { | |
163 | snprintf(channel->name, sizeof(channel->name), "channel-%d", i); | |
164 | channel->pdata = pdata; | |
165 | channel->queue_index = i; | |
166 | channel->dma_regs = pdata->xgmac_regs + DMA_CH_BASE + | |
167 | (DMA_CH_INC * i); | |
168 | ||
169 | if (i < pdata->tx_ring_count) { | |
170 | spin_lock_init(&tx_ring->lock); | |
171 | channel->tx_ring = tx_ring++; | |
172 | } | |
173 | ||
174 | if (i < pdata->rx_ring_count) { | |
175 | spin_lock_init(&tx_ring->lock); | |
176 | channel->rx_ring = rx_ring++; | |
177 | } | |
178 | ||
179 | DBGPR(" %s - queue_index=%u, dma_regs=%p, tx=%p, rx=%p\n", | |
180 | channel->name, channel->queue_index, channel->dma_regs, | |
181 | channel->tx_ring, channel->rx_ring); | |
182 | } | |
183 | ||
184 | pdata->channel_count = count; | |
185 | ||
186 | DBGPR("<--xgbe_alloc_rings\n"); | |
187 | ||
188 | return channel_mem; | |
189 | } | |
190 | ||
191 | static void xgbe_default_config(struct xgbe_prv_data *pdata) | |
192 | { | |
193 | DBGPR("-->xgbe_default_config\n"); | |
194 | ||
195 | pdata->pblx8 = DMA_PBL_X8_ENABLE; | |
196 | pdata->tx_sf_mode = MTL_TSF_ENABLE; | |
197 | pdata->tx_threshold = MTL_TX_THRESHOLD_64; | |
198 | pdata->tx_pbl = DMA_PBL_16; | |
199 | pdata->tx_osp_mode = DMA_OSP_ENABLE; | |
200 | pdata->rx_sf_mode = MTL_RSF_DISABLE; | |
201 | pdata->rx_threshold = MTL_RX_THRESHOLD_64; | |
202 | pdata->rx_pbl = DMA_PBL_16; | |
203 | pdata->pause_autoneg = 1; | |
204 | pdata->tx_pause = 1; | |
205 | pdata->rx_pause = 1; | |
206 | pdata->power_down = 0; | |
207 | pdata->default_autoneg = AUTONEG_ENABLE; | |
208 | pdata->default_speed = SPEED_10000; | |
209 | ||
210 | DBGPR("<--xgbe_default_config\n"); | |
211 | } | |
212 | ||
213 | static void xgbe_init_all_fptrs(struct xgbe_prv_data *pdata) | |
214 | { | |
215 | xgbe_init_function_ptrs_dev(&pdata->hw_if); | |
216 | xgbe_init_function_ptrs_desc(&pdata->desc_if); | |
217 | } | |
218 | ||
219 | static int xgbe_probe(struct platform_device *pdev) | |
220 | { | |
221 | struct xgbe_prv_data *pdata; | |
222 | struct xgbe_hw_if *hw_if; | |
223 | struct xgbe_desc_if *desc_if; | |
224 | struct net_device *netdev; | |
225 | struct device *dev = &pdev->dev; | |
226 | struct resource *res; | |
227 | const u8 *mac_addr; | |
228 | int ret; | |
229 | ||
230 | DBGPR("--> xgbe_probe\n"); | |
231 | ||
232 | netdev = alloc_etherdev_mq(sizeof(struct xgbe_prv_data), | |
d5c48582 | 233 | XGBE_MAX_DMA_CHANNELS); |
c5aa9e3b LT |
234 | if (!netdev) { |
235 | dev_err(dev, "alloc_etherdev failed\n"); | |
236 | ret = -ENOMEM; | |
237 | goto err_alloc; | |
238 | } | |
239 | SET_NETDEV_DEV(netdev, dev); | |
240 | pdata = netdev_priv(netdev); | |
241 | pdata->netdev = netdev; | |
242 | pdata->pdev = pdev; | |
243 | pdata->dev = dev; | |
244 | platform_set_drvdata(pdev, netdev); | |
245 | ||
246 | spin_lock_init(&pdata->lock); | |
247 | mutex_init(&pdata->xpcs_mutex); | |
248 | ||
249 | /* Set and validate the number of descriptors for a ring */ | |
250 | BUILD_BUG_ON_NOT_POWER_OF_2(TX_DESC_CNT); | |
251 | pdata->tx_desc_count = TX_DESC_CNT; | |
252 | if (pdata->tx_desc_count & (pdata->tx_desc_count - 1)) { | |
253 | dev_err(dev, "tx descriptor count (%d) is not valid\n", | |
254 | pdata->tx_desc_count); | |
255 | ret = -EINVAL; | |
256 | goto err_io; | |
257 | } | |
258 | BUILD_BUG_ON_NOT_POWER_OF_2(RX_DESC_CNT); | |
259 | pdata->rx_desc_count = RX_DESC_CNT; | |
260 | if (pdata->rx_desc_count & (pdata->rx_desc_count - 1)) { | |
261 | dev_err(dev, "rx descriptor count (%d) is not valid\n", | |
262 | pdata->rx_desc_count); | |
263 | ret = -EINVAL; | |
264 | goto err_io; | |
265 | } | |
266 | ||
267 | /* Obtain the system clock setting */ | |
268 | pdata->sysclock = devm_clk_get(dev, NULL); | |
269 | if (IS_ERR(pdata->sysclock)) { | |
270 | dev_err(dev, "devm_clk_get failed\n"); | |
271 | ret = PTR_ERR(pdata->sysclock); | |
272 | goto err_io; | |
273 | } | |
274 | ||
275 | /* Obtain the mmio areas for the device */ | |
276 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
277 | pdata->xgmac_regs = devm_ioremap_resource(dev, res); | |
278 | if (IS_ERR(pdata->xgmac_regs)) { | |
279 | dev_err(dev, "xgmac ioremap failed\n"); | |
280 | ret = PTR_ERR(pdata->xgmac_regs); | |
281 | goto err_io; | |
282 | } | |
283 | DBGPR(" xgmac_regs = %p\n", pdata->xgmac_regs); | |
284 | ||
285 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
286 | pdata->xpcs_regs = devm_ioremap_resource(dev, res); | |
287 | if (IS_ERR(pdata->xpcs_regs)) { | |
288 | dev_err(dev, "xpcs ioremap failed\n"); | |
289 | ret = PTR_ERR(pdata->xpcs_regs); | |
290 | goto err_io; | |
291 | } | |
292 | DBGPR(" xpcs_regs = %p\n", pdata->xpcs_regs); | |
293 | ||
294 | /* Set the DMA mask */ | |
295 | if (!dev->dma_mask) | |
296 | dev->dma_mask = &dev->coherent_dma_mask; | |
297 | *(dev->dma_mask) = DMA_BIT_MASK(40); | |
298 | dev->coherent_dma_mask = DMA_BIT_MASK(40); | |
299 | ||
300 | ret = platform_get_irq(pdev, 0); | |
301 | if (ret < 0) { | |
302 | dev_err(dev, "platform_get_irq failed\n"); | |
303 | goto err_io; | |
304 | } | |
305 | netdev->irq = ret; | |
306 | netdev->base_addr = (unsigned long)pdata->xgmac_regs; | |
307 | ||
308 | /* Set all the function pointers */ | |
309 | xgbe_init_all_fptrs(pdata); | |
310 | hw_if = &pdata->hw_if; | |
311 | desc_if = &pdata->desc_if; | |
312 | ||
313 | /* Issue software reset to device */ | |
314 | hw_if->exit(pdata); | |
315 | ||
316 | /* Populate the hardware features */ | |
317 | xgbe_get_all_hw_features(pdata); | |
318 | ||
319 | /* Retrieve the MAC address */ | |
320 | mac_addr = of_get_mac_address(dev->of_node); | |
321 | if (!mac_addr) { | |
322 | dev_err(dev, "invalid mac address for this device\n"); | |
323 | ret = -EINVAL; | |
324 | goto err_io; | |
325 | } | |
326 | memcpy(netdev->dev_addr, mac_addr, netdev->addr_len); | |
327 | ||
328 | /* Retrieve the PHY mode - it must be "xgmii" */ | |
329 | pdata->phy_mode = of_get_phy_mode(dev->of_node); | |
330 | if (pdata->phy_mode != PHY_INTERFACE_MODE_XGMII) { | |
331 | dev_err(dev, "invalid phy-mode specified for this device\n"); | |
332 | ret = -EINVAL; | |
333 | goto err_io; | |
334 | } | |
335 | ||
336 | /* Set default configuration data */ | |
337 | xgbe_default_config(pdata); | |
338 | ||
339 | /* Calculate the number of Tx and Rx rings to be created */ | |
340 | pdata->tx_ring_count = min_t(unsigned int, num_online_cpus(), | |
341 | pdata->hw_feat.tx_ch_cnt); | |
332cfc82 WY |
342 | ret = netif_set_real_num_tx_queues(netdev, pdata->tx_ring_count); |
343 | if (ret) { | |
c5aa9e3b LT |
344 | dev_err(dev, "error setting real tx queue count\n"); |
345 | goto err_io; | |
346 | } | |
347 | ||
348 | pdata->rx_ring_count = min_t(unsigned int, | |
349 | netif_get_num_default_rss_queues(), | |
350 | pdata->hw_feat.rx_ch_cnt); | |
351 | ret = netif_set_real_num_rx_queues(netdev, pdata->rx_ring_count); | |
352 | if (ret) { | |
353 | dev_err(dev, "error setting real rx queue count\n"); | |
354 | goto err_io; | |
355 | } | |
356 | ||
357 | /* Allocate the rings for the DMA channels */ | |
358 | pdata->channel = xgbe_alloc_rings(pdata); | |
359 | if (!pdata->channel) { | |
360 | dev_err(dev, "ring allocation failed\n"); | |
361 | ret = -ENOMEM; | |
362 | goto err_io; | |
363 | } | |
364 | ||
365 | /* Prepare to regsiter with MDIO */ | |
366 | pdata->mii_bus_id = kasprintf(GFP_KERNEL, "%s", pdev->name); | |
367 | if (!pdata->mii_bus_id) { | |
368 | dev_err(dev, "failed to allocate mii bus id\n"); | |
369 | ret = -ENOMEM; | |
370 | goto err_io; | |
371 | } | |
372 | ret = xgbe_mdio_register(pdata); | |
373 | if (ret) | |
374 | goto err_bus_id; | |
375 | ||
376 | /* Set network and ethtool operations */ | |
377 | netdev->netdev_ops = xgbe_get_netdev_ops(); | |
378 | netdev->ethtool_ops = xgbe_get_ethtool_ops(); | |
379 | ||
380 | /* Set device features */ | |
381 | netdev->hw_features = NETIF_F_SG | | |
382 | NETIF_F_IP_CSUM | | |
383 | NETIF_F_IPV6_CSUM | | |
384 | NETIF_F_RXCSUM | | |
385 | NETIF_F_TSO | | |
386 | NETIF_F_TSO6 | | |
387 | NETIF_F_GRO | | |
388 | NETIF_F_HW_VLAN_CTAG_RX | | |
389 | NETIF_F_HW_VLAN_CTAG_TX; | |
390 | ||
391 | netdev->vlan_features |= NETIF_F_SG | | |
392 | NETIF_F_IP_CSUM | | |
393 | NETIF_F_IPV6_CSUM | | |
394 | NETIF_F_TSO | | |
395 | NETIF_F_TSO6; | |
396 | ||
397 | netdev->features |= netdev->hw_features; | |
398 | pdata->netdev_features = netdev->features; | |
399 | ||
400 | xgbe_init_rx_coalesce(pdata); | |
401 | xgbe_init_tx_coalesce(pdata); | |
402 | ||
403 | netif_carrier_off(netdev); | |
404 | ret = register_netdev(netdev); | |
405 | if (ret) { | |
406 | dev_err(dev, "net device registration failed\n"); | |
407 | goto err_reg_netdev; | |
408 | } | |
409 | ||
410 | xgbe_debugfs_init(pdata); | |
411 | ||
412 | netdev_notice(netdev, "net device enabled\n"); | |
413 | ||
414 | DBGPR("<-- xgbe_probe\n"); | |
415 | ||
416 | return 0; | |
417 | ||
418 | err_reg_netdev: | |
419 | xgbe_mdio_unregister(pdata); | |
420 | ||
421 | err_bus_id: | |
422 | kfree(pdata->mii_bus_id); | |
423 | ||
424 | err_io: | |
425 | free_netdev(netdev); | |
426 | ||
427 | err_alloc: | |
428 | dev_notice(dev, "net device not enabled\n"); | |
429 | ||
430 | return ret; | |
431 | } | |
432 | ||
433 | static int xgbe_remove(struct platform_device *pdev) | |
434 | { | |
435 | struct net_device *netdev = platform_get_drvdata(pdev); | |
436 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
437 | ||
438 | DBGPR("-->xgbe_remove\n"); | |
439 | ||
440 | xgbe_debugfs_exit(pdata); | |
441 | ||
442 | unregister_netdev(netdev); | |
443 | ||
444 | xgbe_mdio_unregister(pdata); | |
445 | ||
446 | kfree(pdata->mii_bus_id); | |
447 | ||
448 | free_netdev(netdev); | |
449 | ||
450 | DBGPR("<--xgbe_remove\n"); | |
451 | ||
452 | return 0; | |
453 | } | |
454 | ||
455 | #ifdef CONFIG_PM | |
456 | static int xgbe_suspend(struct device *dev) | |
457 | { | |
458 | struct net_device *netdev = dev_get_drvdata(dev); | |
459 | int ret; | |
460 | ||
461 | DBGPR("-->xgbe_suspend\n"); | |
462 | ||
463 | if (!netif_running(netdev)) { | |
464 | DBGPR("<--xgbe_dev_suspend\n"); | |
465 | return -EINVAL; | |
466 | } | |
467 | ||
468 | ret = xgbe_powerdown(netdev, XGMAC_DRIVER_CONTEXT); | |
469 | ||
470 | DBGPR("<--xgbe_suspend\n"); | |
471 | ||
472 | return ret; | |
473 | } | |
474 | ||
475 | static int xgbe_resume(struct device *dev) | |
476 | { | |
477 | struct net_device *netdev = dev_get_drvdata(dev); | |
478 | int ret; | |
479 | ||
480 | DBGPR("-->xgbe_resume\n"); | |
481 | ||
482 | if (!netif_running(netdev)) { | |
483 | DBGPR("<--xgbe_dev_resume\n"); | |
484 | return -EINVAL; | |
485 | } | |
486 | ||
487 | ret = xgbe_powerup(netdev, XGMAC_DRIVER_CONTEXT); | |
488 | ||
489 | DBGPR("<--xgbe_resume\n"); | |
490 | ||
491 | return ret; | |
492 | } | |
493 | #endif /* CONFIG_PM */ | |
494 | ||
495 | static const struct of_device_id xgbe_of_match[] = { | |
496 | { .compatible = "amd,xgbe-seattle-v1a", }, | |
497 | {}, | |
498 | }; | |
499 | ||
500 | MODULE_DEVICE_TABLE(of, xgbe_of_match); | |
501 | static SIMPLE_DEV_PM_OPS(xgbe_pm_ops, xgbe_suspend, xgbe_resume); | |
502 | ||
503 | static struct platform_driver xgbe_driver = { | |
504 | .driver = { | |
505 | .name = "amd-xgbe", | |
506 | .of_match_table = xgbe_of_match, | |
507 | .pm = &xgbe_pm_ops, | |
508 | }, | |
509 | .probe = xgbe_probe, | |
510 | .remove = xgbe_remove, | |
511 | }; | |
512 | ||
513 | module_platform_driver(xgbe_driver); |