Commit | Line | Data |
---|---|---|
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 | ||
9227dc5e | 117 | #include <linux/platform_device.h> |
c5aa9e3b LT |
118 | #include <linux/spinlock.h> |
119 | #include <linux/tcp.h> | |
120 | #include <linux/if_vlan.h> | |
c5aa9e3b LT |
121 | #include <net/busy_poll.h> |
122 | #include <linux/clk.h> | |
123 | #include <linux/if_ether.h> | |
23e4eef7 | 124 | #include <linux/net_tstamp.h> |
88131a81 | 125 | #include <linux/phy.h> |
c5aa9e3b LT |
126 | |
127 | #include "xgbe.h" | |
128 | #include "xgbe-common.h" | |
129 | ||
9227dc5e LT |
130 | static int xgbe_one_poll(struct napi_struct *, int); |
131 | static int xgbe_all_poll(struct napi_struct *, int); | |
c5aa9e3b LT |
132 | static void xgbe_set_rx_mode(struct net_device *); |
133 | ||
4780b7ca LT |
134 | static int xgbe_alloc_channels(struct xgbe_prv_data *pdata) |
135 | { | |
136 | struct xgbe_channel *channel_mem, *channel; | |
137 | struct xgbe_ring *tx_ring, *rx_ring; | |
138 | unsigned int count, i; | |
9227dc5e | 139 | int ret = -ENOMEM; |
4780b7ca LT |
140 | |
141 | count = max_t(unsigned int, pdata->tx_ring_count, pdata->rx_ring_count); | |
142 | ||
143 | channel_mem = kcalloc(count, sizeof(struct xgbe_channel), GFP_KERNEL); | |
144 | if (!channel_mem) | |
145 | goto err_channel; | |
146 | ||
147 | tx_ring = kcalloc(pdata->tx_ring_count, sizeof(struct xgbe_ring), | |
148 | GFP_KERNEL); | |
149 | if (!tx_ring) | |
150 | goto err_tx_ring; | |
151 | ||
152 | rx_ring = kcalloc(pdata->rx_ring_count, sizeof(struct xgbe_ring), | |
153 | GFP_KERNEL); | |
154 | if (!rx_ring) | |
155 | goto err_rx_ring; | |
156 | ||
157 | for (i = 0, channel = channel_mem; i < count; i++, channel++) { | |
158 | snprintf(channel->name, sizeof(channel->name), "channel-%d", i); | |
159 | channel->pdata = pdata; | |
160 | channel->queue_index = i; | |
161 | channel->dma_regs = pdata->xgmac_regs + DMA_CH_BASE + | |
162 | (DMA_CH_INC * i); | |
163 | ||
9227dc5e LT |
164 | if (pdata->per_channel_irq) { |
165 | /* Get the DMA interrupt (offset 1) */ | |
166 | ret = platform_get_irq(pdata->pdev, i + 1); | |
167 | if (ret < 0) { | |
168 | netdev_err(pdata->netdev, | |
169 | "platform_get_irq %u failed\n", | |
170 | i + 1); | |
171 | goto err_irq; | |
172 | } | |
173 | ||
174 | channel->dma_irq = ret; | |
175 | } | |
176 | ||
4780b7ca LT |
177 | if (i < pdata->tx_ring_count) { |
178 | spin_lock_init(&tx_ring->lock); | |
179 | channel->tx_ring = tx_ring++; | |
180 | } | |
181 | ||
182 | if (i < pdata->rx_ring_count) { | |
183 | spin_lock_init(&rx_ring->lock); | |
184 | channel->rx_ring = rx_ring++; | |
185 | } | |
186 | ||
9227dc5e | 187 | DBGPR(" %s: queue=%u, dma_regs=%p, dma_irq=%d, tx=%p, rx=%p\n", |
4780b7ca | 188 | channel->name, channel->queue_index, channel->dma_regs, |
9227dc5e | 189 | channel->dma_irq, channel->tx_ring, channel->rx_ring); |
4780b7ca LT |
190 | } |
191 | ||
192 | pdata->channel = channel_mem; | |
193 | pdata->channel_count = count; | |
194 | ||
195 | return 0; | |
196 | ||
9227dc5e LT |
197 | err_irq: |
198 | kfree(rx_ring); | |
199 | ||
4780b7ca LT |
200 | err_rx_ring: |
201 | kfree(tx_ring); | |
202 | ||
203 | err_tx_ring: | |
204 | kfree(channel_mem); | |
205 | ||
206 | err_channel: | |
9227dc5e | 207 | return ret; |
4780b7ca LT |
208 | } |
209 | ||
210 | static void xgbe_free_channels(struct xgbe_prv_data *pdata) | |
211 | { | |
212 | if (!pdata->channel) | |
213 | return; | |
214 | ||
215 | kfree(pdata->channel->rx_ring); | |
216 | kfree(pdata->channel->tx_ring); | |
217 | kfree(pdata->channel); | |
218 | ||
219 | pdata->channel = NULL; | |
220 | pdata->channel_count = 0; | |
221 | } | |
222 | ||
c5aa9e3b LT |
223 | static inline unsigned int xgbe_tx_avail_desc(struct xgbe_ring *ring) |
224 | { | |
225 | return (ring->rdesc_count - (ring->cur - ring->dirty)); | |
226 | } | |
227 | ||
270894e7 LT |
228 | static inline unsigned int xgbe_rx_dirty_desc(struct xgbe_ring *ring) |
229 | { | |
230 | return (ring->cur - ring->dirty); | |
231 | } | |
232 | ||
16958a2b LT |
233 | static int xgbe_maybe_stop_tx_queue(struct xgbe_channel *channel, |
234 | struct xgbe_ring *ring, unsigned int count) | |
235 | { | |
236 | struct xgbe_prv_data *pdata = channel->pdata; | |
237 | ||
238 | if (count > xgbe_tx_avail_desc(ring)) { | |
239 | DBGPR(" Tx queue stopped, not enough descriptors available\n"); | |
240 | netif_stop_subqueue(pdata->netdev, channel->queue_index); | |
241 | ring->tx.queue_stopped = 1; | |
242 | ||
243 | /* If we haven't notified the hardware because of xmit_more | |
244 | * support, tell it now | |
245 | */ | |
246 | if (ring->tx.xmit_more) | |
247 | pdata->hw_if.tx_start_xmit(channel, ring); | |
248 | ||
249 | return NETDEV_TX_BUSY; | |
250 | } | |
251 | ||
252 | return 0; | |
253 | } | |
254 | ||
c5aa9e3b LT |
255 | static int xgbe_calc_rx_buf_size(struct net_device *netdev, unsigned int mtu) |
256 | { | |
257 | unsigned int rx_buf_size; | |
258 | ||
259 | if (mtu > XGMAC_JUMBO_PACKET_MTU) { | |
260 | netdev_alert(netdev, "MTU exceeds maximum supported value\n"); | |
261 | return -EINVAL; | |
262 | } | |
263 | ||
264 | rx_buf_size = mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; | |
08dcc47c LT |
265 | rx_buf_size = clamp_val(rx_buf_size, XGBE_RX_MIN_BUF_SIZE, PAGE_SIZE); |
266 | ||
d0a8ba6c LT |
267 | rx_buf_size = (rx_buf_size + XGBE_RX_BUF_ALIGN - 1) & |
268 | ~(XGBE_RX_BUF_ALIGN - 1); | |
c5aa9e3b LT |
269 | |
270 | return rx_buf_size; | |
271 | } | |
272 | ||
273 | static void xgbe_enable_rx_tx_ints(struct xgbe_prv_data *pdata) | |
274 | { | |
275 | struct xgbe_hw_if *hw_if = &pdata->hw_if; | |
276 | struct xgbe_channel *channel; | |
9867e8fb | 277 | enum xgbe_int int_id; |
c5aa9e3b LT |
278 | unsigned int i; |
279 | ||
280 | channel = pdata->channel; | |
281 | for (i = 0; i < pdata->channel_count; i++, channel++) { | |
9867e8fb LT |
282 | if (channel->tx_ring && channel->rx_ring) |
283 | int_id = XGMAC_INT_DMA_CH_SR_TI_RI; | |
284 | else if (channel->tx_ring) | |
285 | int_id = XGMAC_INT_DMA_CH_SR_TI; | |
286 | else if (channel->rx_ring) | |
287 | int_id = XGMAC_INT_DMA_CH_SR_RI; | |
288 | else | |
289 | continue; | |
290 | ||
291 | hw_if->enable_int(channel, int_id); | |
c5aa9e3b LT |
292 | } |
293 | } | |
294 | ||
295 | static void xgbe_disable_rx_tx_ints(struct xgbe_prv_data *pdata) | |
296 | { | |
297 | struct xgbe_hw_if *hw_if = &pdata->hw_if; | |
298 | struct xgbe_channel *channel; | |
9867e8fb | 299 | enum xgbe_int int_id; |
c5aa9e3b LT |
300 | unsigned int i; |
301 | ||
302 | channel = pdata->channel; | |
303 | for (i = 0; i < pdata->channel_count; i++, channel++) { | |
9867e8fb LT |
304 | if (channel->tx_ring && channel->rx_ring) |
305 | int_id = XGMAC_INT_DMA_CH_SR_TI_RI; | |
306 | else if (channel->tx_ring) | |
307 | int_id = XGMAC_INT_DMA_CH_SR_TI; | |
308 | else if (channel->rx_ring) | |
309 | int_id = XGMAC_INT_DMA_CH_SR_RI; | |
310 | else | |
311 | continue; | |
312 | ||
313 | hw_if->disable_int(channel, int_id); | |
c5aa9e3b LT |
314 | } |
315 | } | |
316 | ||
317 | static irqreturn_t xgbe_isr(int irq, void *data) | |
318 | { | |
319 | struct xgbe_prv_data *pdata = data; | |
320 | struct xgbe_hw_if *hw_if = &pdata->hw_if; | |
321 | struct xgbe_channel *channel; | |
322 | unsigned int dma_isr, dma_ch_isr; | |
23e4eef7 | 323 | unsigned int mac_isr, mac_tssr; |
c5aa9e3b LT |
324 | unsigned int i; |
325 | ||
326 | /* The DMA interrupt status register also reports MAC and MTL | |
327 | * interrupts. So for polling mode, we just need to check for | |
328 | * this register to be non-zero | |
329 | */ | |
330 | dma_isr = XGMAC_IOREAD(pdata, DMA_ISR); | |
331 | if (!dma_isr) | |
332 | goto isr_done; | |
333 | ||
c5aa9e3b | 334 | DBGPR(" DMA_ISR = %08x\n", dma_isr); |
c5aa9e3b LT |
335 | |
336 | for (i = 0; i < pdata->channel_count; i++) { | |
337 | if (!(dma_isr & (1 << i))) | |
338 | continue; | |
339 | ||
340 | channel = pdata->channel + i; | |
341 | ||
342 | dma_ch_isr = XGMAC_DMA_IOREAD(channel, DMA_CH_SR); | |
343 | DBGPR(" DMA_CH%u_ISR = %08x\n", i, dma_ch_isr); | |
344 | ||
fd972b73 LT |
345 | /* The TI or RI interrupt bits may still be set even if using |
346 | * per channel DMA interrupts. Check to be sure those are not | |
347 | * enabled before using the private data napi structure. | |
9227dc5e | 348 | */ |
fd972b73 LT |
349 | if (!pdata->per_channel_irq && |
350 | (XGMAC_GET_BITS(dma_ch_isr, DMA_CH_SR, TI) || | |
351 | XGMAC_GET_BITS(dma_ch_isr, DMA_CH_SR, RI))) { | |
c5aa9e3b LT |
352 | if (napi_schedule_prep(&pdata->napi)) { |
353 | /* Disable Tx and Rx interrupts */ | |
354 | xgbe_disable_rx_tx_ints(pdata); | |
355 | ||
356 | /* Turn on polling */ | |
357 | __napi_schedule(&pdata->napi); | |
358 | } | |
359 | } | |
360 | ||
361 | /* Restart the device on a Fatal Bus Error */ | |
362 | if (XGMAC_GET_BITS(dma_ch_isr, DMA_CH_SR, FBE)) | |
363 | schedule_work(&pdata->restart_work); | |
364 | ||
365 | /* Clear all interrupt signals */ | |
366 | XGMAC_DMA_IOWRITE(channel, DMA_CH_SR, dma_ch_isr); | |
367 | } | |
368 | ||
369 | if (XGMAC_GET_BITS(dma_isr, DMA_ISR, MACIS)) { | |
370 | mac_isr = XGMAC_IOREAD(pdata, MAC_ISR); | |
371 | ||
372 | if (XGMAC_GET_BITS(mac_isr, MAC_ISR, MMCTXIS)) | |
373 | hw_if->tx_mmc_int(pdata); | |
374 | ||
375 | if (XGMAC_GET_BITS(mac_isr, MAC_ISR, MMCRXIS)) | |
376 | hw_if->rx_mmc_int(pdata); | |
23e4eef7 LT |
377 | |
378 | if (XGMAC_GET_BITS(mac_isr, MAC_ISR, TSIS)) { | |
379 | mac_tssr = XGMAC_IOREAD(pdata, MAC_TSSR); | |
380 | ||
381 | if (XGMAC_GET_BITS(mac_tssr, MAC_TSSR, TXTSC)) { | |
382 | /* Read Tx Timestamp to clear interrupt */ | |
383 | pdata->tx_tstamp = | |
384 | hw_if->get_tx_tstamp(pdata); | |
385 | schedule_work(&pdata->tx_tstamp_work); | |
386 | } | |
387 | } | |
c5aa9e3b LT |
388 | } |
389 | ||
390 | DBGPR(" DMA_ISR = %08x\n", XGMAC_IOREAD(pdata, DMA_ISR)); | |
391 | ||
c5aa9e3b LT |
392 | isr_done: |
393 | return IRQ_HANDLED; | |
394 | } | |
395 | ||
9227dc5e LT |
396 | static irqreturn_t xgbe_dma_isr(int irq, void *data) |
397 | { | |
398 | struct xgbe_channel *channel = data; | |
399 | ||
400 | /* Per channel DMA interrupts are enabled, so we use the per | |
401 | * channel napi structure and not the private data napi structure | |
402 | */ | |
403 | if (napi_schedule_prep(&channel->napi)) { | |
404 | /* Disable Tx and Rx interrupts */ | |
f9c5c62d | 405 | disable_irq_nosync(channel->dma_irq); |
9227dc5e LT |
406 | |
407 | /* Turn on polling */ | |
408 | __napi_schedule(&channel->napi); | |
409 | } | |
410 | ||
411 | return IRQ_HANDLED; | |
412 | } | |
413 | ||
c5aa9e3b LT |
414 | static enum hrtimer_restart xgbe_tx_timer(struct hrtimer *timer) |
415 | { | |
416 | struct xgbe_channel *channel = container_of(timer, | |
417 | struct xgbe_channel, | |
418 | tx_timer); | |
c5aa9e3b | 419 | struct xgbe_prv_data *pdata = channel->pdata; |
9227dc5e | 420 | struct napi_struct *napi; |
c5aa9e3b LT |
421 | |
422 | DBGPR("-->xgbe_tx_timer\n"); | |
423 | ||
9227dc5e LT |
424 | napi = (pdata->per_channel_irq) ? &channel->napi : &pdata->napi; |
425 | ||
9227dc5e | 426 | if (napi_schedule_prep(napi)) { |
c5aa9e3b | 427 | /* Disable Tx and Rx interrupts */ |
9227dc5e LT |
428 | if (pdata->per_channel_irq) |
429 | disable_irq(channel->dma_irq); | |
430 | else | |
431 | xgbe_disable_rx_tx_ints(pdata); | |
c5aa9e3b LT |
432 | |
433 | /* Turn on polling */ | |
9227dc5e | 434 | __napi_schedule(napi); |
c5aa9e3b LT |
435 | } |
436 | ||
437 | channel->tx_timer_active = 0; | |
438 | ||
c5aa9e3b LT |
439 | DBGPR("<--xgbe_tx_timer\n"); |
440 | ||
441 | return HRTIMER_NORESTART; | |
442 | } | |
443 | ||
444 | static void xgbe_init_tx_timers(struct xgbe_prv_data *pdata) | |
445 | { | |
446 | struct xgbe_channel *channel; | |
447 | unsigned int i; | |
448 | ||
449 | DBGPR("-->xgbe_init_tx_timers\n"); | |
450 | ||
451 | channel = pdata->channel; | |
452 | for (i = 0; i < pdata->channel_count; i++, channel++) { | |
453 | if (!channel->tx_ring) | |
454 | break; | |
455 | ||
456 | DBGPR(" %s adding tx timer\n", channel->name); | |
457 | hrtimer_init(&channel->tx_timer, CLOCK_MONOTONIC, | |
458 | HRTIMER_MODE_REL); | |
459 | channel->tx_timer.function = xgbe_tx_timer; | |
460 | } | |
461 | ||
462 | DBGPR("<--xgbe_init_tx_timers\n"); | |
463 | } | |
464 | ||
465 | static void xgbe_stop_tx_timers(struct xgbe_prv_data *pdata) | |
466 | { | |
467 | struct xgbe_channel *channel; | |
468 | unsigned int i; | |
469 | ||
470 | DBGPR("-->xgbe_stop_tx_timers\n"); | |
471 | ||
472 | channel = pdata->channel; | |
473 | for (i = 0; i < pdata->channel_count; i++, channel++) { | |
474 | if (!channel->tx_ring) | |
475 | break; | |
476 | ||
477 | DBGPR(" %s deleting tx timer\n", channel->name); | |
478 | channel->tx_timer_active = 0; | |
479 | hrtimer_cancel(&channel->tx_timer); | |
480 | } | |
481 | ||
482 | DBGPR("<--xgbe_stop_tx_timers\n"); | |
483 | } | |
484 | ||
485 | void xgbe_get_all_hw_features(struct xgbe_prv_data *pdata) | |
486 | { | |
487 | unsigned int mac_hfr0, mac_hfr1, mac_hfr2; | |
488 | struct xgbe_hw_features *hw_feat = &pdata->hw_feat; | |
489 | ||
490 | DBGPR("-->xgbe_get_all_hw_features\n"); | |
491 | ||
492 | mac_hfr0 = XGMAC_IOREAD(pdata, MAC_HWF0R); | |
493 | mac_hfr1 = XGMAC_IOREAD(pdata, MAC_HWF1R); | |
494 | mac_hfr2 = XGMAC_IOREAD(pdata, MAC_HWF2R); | |
495 | ||
496 | memset(hw_feat, 0, sizeof(*hw_feat)); | |
497 | ||
a9a4a2d9 LT |
498 | hw_feat->version = XGMAC_IOREAD(pdata, MAC_VR); |
499 | ||
c5aa9e3b LT |
500 | /* Hardware feature register 0 */ |
501 | hw_feat->gmii = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, GMIISEL); | |
502 | hw_feat->vlhash = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, VLHASH); | |
503 | hw_feat->sma = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, SMASEL); | |
504 | hw_feat->rwk = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, RWKSEL); | |
505 | hw_feat->mgk = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, MGKSEL); | |
506 | hw_feat->mmc = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, MMCSEL); | |
507 | hw_feat->aoe = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, ARPOFFSEL); | |
508 | hw_feat->ts = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, TSSEL); | |
509 | hw_feat->eee = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, EEESEL); | |
510 | hw_feat->tx_coe = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, TXCOESEL); | |
511 | hw_feat->rx_coe = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, RXCOESEL); | |
512 | hw_feat->addn_mac = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, | |
513 | ADDMACADRSEL); | |
514 | hw_feat->ts_src = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, TSSTSSEL); | |
515 | hw_feat->sa_vlan_ins = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, SAVLANINS); | |
516 | ||
517 | /* Hardware feature register 1 */ | |
518 | hw_feat->rx_fifo_size = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R, | |
519 | RXFIFOSIZE); | |
520 | hw_feat->tx_fifo_size = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R, | |
521 | TXFIFOSIZE); | |
522 | hw_feat->dcb = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R, DCBEN); | |
523 | hw_feat->sph = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R, SPHEN); | |
524 | hw_feat->tso = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R, TSOEN); | |
525 | hw_feat->dma_debug = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R, DBGMEMA); | |
cf180b8a | 526 | hw_feat->rss = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R, RSSEN); |
fca2d994 | 527 | hw_feat->tc_cnt = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R, NUMTC); |
c5aa9e3b LT |
528 | hw_feat->hash_table_size = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R, |
529 | HASHTBLSZ); | |
530 | hw_feat->l3l4_filter_num = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R, | |
531 | L3L4FNUM); | |
532 | ||
533 | /* Hardware feature register 2 */ | |
534 | hw_feat->rx_q_cnt = XGMAC_GET_BITS(mac_hfr2, MAC_HWF2R, RXQCNT); | |
535 | hw_feat->tx_q_cnt = XGMAC_GET_BITS(mac_hfr2, MAC_HWF2R, TXQCNT); | |
536 | hw_feat->rx_ch_cnt = XGMAC_GET_BITS(mac_hfr2, MAC_HWF2R, RXCHCNT); | |
537 | hw_feat->tx_ch_cnt = XGMAC_GET_BITS(mac_hfr2, MAC_HWF2R, TXCHCNT); | |
538 | hw_feat->pps_out_num = XGMAC_GET_BITS(mac_hfr2, MAC_HWF2R, PPSOUTNUM); | |
539 | hw_feat->aux_snap_num = XGMAC_GET_BITS(mac_hfr2, MAC_HWF2R, AUXSNAPNUM); | |
540 | ||
b85e4d89 LT |
541 | /* Translate the Hash Table size into actual number */ |
542 | switch (hw_feat->hash_table_size) { | |
543 | case 0: | |
544 | break; | |
545 | case 1: | |
546 | hw_feat->hash_table_size = 64; | |
547 | break; | |
548 | case 2: | |
549 | hw_feat->hash_table_size = 128; | |
550 | break; | |
551 | case 3: | |
552 | hw_feat->hash_table_size = 256; | |
553 | break; | |
554 | } | |
555 | ||
211fcf6d | 556 | /* The Queue, Channel and TC counts are zero based so increment them |
c5aa9e3b LT |
557 | * to get the actual number |
558 | */ | |
559 | hw_feat->rx_q_cnt++; | |
560 | hw_feat->tx_q_cnt++; | |
561 | hw_feat->rx_ch_cnt++; | |
562 | hw_feat->tx_ch_cnt++; | |
211fcf6d | 563 | hw_feat->tc_cnt++; |
c5aa9e3b LT |
564 | |
565 | DBGPR("<--xgbe_get_all_hw_features\n"); | |
566 | } | |
567 | ||
568 | static void xgbe_napi_enable(struct xgbe_prv_data *pdata, unsigned int add) | |
569 | { | |
9227dc5e LT |
570 | struct xgbe_channel *channel; |
571 | unsigned int i; | |
572 | ||
573 | if (pdata->per_channel_irq) { | |
574 | channel = pdata->channel; | |
575 | for (i = 0; i < pdata->channel_count; i++, channel++) { | |
576 | if (add) | |
577 | netif_napi_add(pdata->netdev, &channel->napi, | |
578 | xgbe_one_poll, NAPI_POLL_WEIGHT); | |
579 | ||
580 | napi_enable(&channel->napi); | |
581 | } | |
582 | } else { | |
583 | if (add) | |
584 | netif_napi_add(pdata->netdev, &pdata->napi, | |
585 | xgbe_all_poll, NAPI_POLL_WEIGHT); | |
586 | ||
587 | napi_enable(&pdata->napi); | |
588 | } | |
c5aa9e3b LT |
589 | } |
590 | ||
ff42606e | 591 | static void xgbe_napi_disable(struct xgbe_prv_data *pdata, unsigned int del) |
c5aa9e3b | 592 | { |
9227dc5e LT |
593 | struct xgbe_channel *channel; |
594 | unsigned int i; | |
595 | ||
596 | if (pdata->per_channel_irq) { | |
597 | channel = pdata->channel; | |
598 | for (i = 0; i < pdata->channel_count; i++, channel++) { | |
599 | napi_disable(&channel->napi); | |
ff42606e | 600 | |
9227dc5e LT |
601 | if (del) |
602 | netif_napi_del(&channel->napi); | |
603 | } | |
604 | } else { | |
605 | napi_disable(&pdata->napi); | |
606 | ||
607 | if (del) | |
608 | netif_napi_del(&pdata->napi); | |
609 | } | |
c5aa9e3b LT |
610 | } |
611 | ||
c30e76a7 LT |
612 | static int xgbe_request_irqs(struct xgbe_prv_data *pdata) |
613 | { | |
614 | struct xgbe_channel *channel; | |
615 | struct net_device *netdev = pdata->netdev; | |
616 | unsigned int i; | |
617 | int ret; | |
618 | ||
619 | ret = devm_request_irq(pdata->dev, pdata->dev_irq, xgbe_isr, 0, | |
620 | netdev->name, pdata); | |
621 | if (ret) { | |
622 | netdev_alert(netdev, "error requesting irq %d\n", | |
623 | pdata->dev_irq); | |
624 | return ret; | |
625 | } | |
626 | ||
627 | if (!pdata->per_channel_irq) | |
628 | return 0; | |
629 | ||
630 | channel = pdata->channel; | |
631 | for (i = 0; i < pdata->channel_count; i++, channel++) { | |
632 | snprintf(channel->dma_irq_name, | |
633 | sizeof(channel->dma_irq_name) - 1, | |
634 | "%s-TxRx-%u", netdev_name(netdev), | |
635 | channel->queue_index); | |
636 | ||
637 | ret = devm_request_irq(pdata->dev, channel->dma_irq, | |
638 | xgbe_dma_isr, 0, | |
639 | channel->dma_irq_name, channel); | |
640 | if (ret) { | |
641 | netdev_alert(netdev, "error requesting irq %d\n", | |
642 | channel->dma_irq); | |
643 | goto err_irq; | |
644 | } | |
645 | } | |
646 | ||
647 | return 0; | |
648 | ||
649 | err_irq: | |
650 | /* Using an unsigned int, 'i' will go to UINT_MAX and exit */ | |
651 | for (i--, channel--; i < pdata->channel_count; i--, channel--) | |
652 | devm_free_irq(pdata->dev, channel->dma_irq, channel); | |
653 | ||
654 | devm_free_irq(pdata->dev, pdata->dev_irq, pdata); | |
655 | ||
656 | return ret; | |
657 | } | |
658 | ||
659 | static void xgbe_free_irqs(struct xgbe_prv_data *pdata) | |
660 | { | |
661 | struct xgbe_channel *channel; | |
662 | unsigned int i; | |
663 | ||
664 | devm_free_irq(pdata->dev, pdata->dev_irq, pdata); | |
665 | ||
666 | if (!pdata->per_channel_irq) | |
667 | return; | |
668 | ||
669 | channel = pdata->channel; | |
670 | for (i = 0; i < pdata->channel_count; i++, channel++) | |
671 | devm_free_irq(pdata->dev, channel->dma_irq, channel); | |
672 | } | |
673 | ||
c5aa9e3b LT |
674 | void xgbe_init_tx_coalesce(struct xgbe_prv_data *pdata) |
675 | { | |
676 | struct xgbe_hw_if *hw_if = &pdata->hw_if; | |
677 | ||
678 | DBGPR("-->xgbe_init_tx_coalesce\n"); | |
679 | ||
680 | pdata->tx_usecs = XGMAC_INIT_DMA_TX_USECS; | |
681 | pdata->tx_frames = XGMAC_INIT_DMA_TX_FRAMES; | |
682 | ||
683 | hw_if->config_tx_coalesce(pdata); | |
684 | ||
685 | DBGPR("<--xgbe_init_tx_coalesce\n"); | |
686 | } | |
687 | ||
688 | void xgbe_init_rx_coalesce(struct xgbe_prv_data *pdata) | |
689 | { | |
690 | struct xgbe_hw_if *hw_if = &pdata->hw_if; | |
691 | ||
692 | DBGPR("-->xgbe_init_rx_coalesce\n"); | |
693 | ||
694 | pdata->rx_riwt = hw_if->usec_to_riwt(pdata, XGMAC_INIT_DMA_RX_USECS); | |
695 | pdata->rx_frames = XGMAC_INIT_DMA_RX_FRAMES; | |
696 | ||
697 | hw_if->config_rx_coalesce(pdata); | |
698 | ||
699 | DBGPR("<--xgbe_init_rx_coalesce\n"); | |
700 | } | |
701 | ||
08dcc47c | 702 | static void xgbe_free_tx_data(struct xgbe_prv_data *pdata) |
c5aa9e3b LT |
703 | { |
704 | struct xgbe_desc_if *desc_if = &pdata->desc_if; | |
705 | struct xgbe_channel *channel; | |
706 | struct xgbe_ring *ring; | |
707 | struct xgbe_ring_data *rdata; | |
708 | unsigned int i, j; | |
709 | ||
08dcc47c | 710 | DBGPR("-->xgbe_free_tx_data\n"); |
c5aa9e3b LT |
711 | |
712 | channel = pdata->channel; | |
713 | for (i = 0; i < pdata->channel_count; i++, channel++) { | |
714 | ring = channel->tx_ring; | |
715 | if (!ring) | |
716 | break; | |
717 | ||
718 | for (j = 0; j < ring->rdesc_count; j++) { | |
d0a8ba6c | 719 | rdata = XGBE_GET_DESC_DATA(ring, j); |
08dcc47c | 720 | desc_if->unmap_rdata(pdata, rdata); |
c5aa9e3b LT |
721 | } |
722 | } | |
723 | ||
08dcc47c | 724 | DBGPR("<--xgbe_free_tx_data\n"); |
c5aa9e3b LT |
725 | } |
726 | ||
08dcc47c | 727 | static void xgbe_free_rx_data(struct xgbe_prv_data *pdata) |
c5aa9e3b LT |
728 | { |
729 | struct xgbe_desc_if *desc_if = &pdata->desc_if; | |
730 | struct xgbe_channel *channel; | |
731 | struct xgbe_ring *ring; | |
732 | struct xgbe_ring_data *rdata; | |
733 | unsigned int i, j; | |
734 | ||
08dcc47c | 735 | DBGPR("-->xgbe_free_rx_data\n"); |
c5aa9e3b LT |
736 | |
737 | channel = pdata->channel; | |
738 | for (i = 0; i < pdata->channel_count; i++, channel++) { | |
739 | ring = channel->rx_ring; | |
740 | if (!ring) | |
741 | break; | |
742 | ||
743 | for (j = 0; j < ring->rdesc_count; j++) { | |
d0a8ba6c | 744 | rdata = XGBE_GET_DESC_DATA(ring, j); |
08dcc47c | 745 | desc_if->unmap_rdata(pdata, rdata); |
c5aa9e3b LT |
746 | } |
747 | } | |
748 | ||
08dcc47c | 749 | DBGPR("<--xgbe_free_rx_data\n"); |
c5aa9e3b LT |
750 | } |
751 | ||
88131a81 LT |
752 | static void xgbe_adjust_link(struct net_device *netdev) |
753 | { | |
754 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
755 | struct xgbe_hw_if *hw_if = &pdata->hw_if; | |
756 | struct phy_device *phydev = pdata->phydev; | |
757 | int new_state = 0; | |
758 | ||
1d67d7f6 | 759 | if (!phydev) |
88131a81 LT |
760 | return; |
761 | ||
762 | if (phydev->link) { | |
763 | /* Flow control support */ | |
764 | if (pdata->pause_autoneg) { | |
765 | if (phydev->pause || phydev->asym_pause) { | |
766 | pdata->tx_pause = 1; | |
767 | pdata->rx_pause = 1; | |
768 | } else { | |
769 | pdata->tx_pause = 0; | |
770 | pdata->rx_pause = 0; | |
771 | } | |
772 | } | |
773 | ||
774 | if (pdata->tx_pause != pdata->phy_tx_pause) { | |
775 | hw_if->config_tx_flow_control(pdata); | |
776 | pdata->phy_tx_pause = pdata->tx_pause; | |
777 | } | |
778 | ||
779 | if (pdata->rx_pause != pdata->phy_rx_pause) { | |
780 | hw_if->config_rx_flow_control(pdata); | |
781 | pdata->phy_rx_pause = pdata->rx_pause; | |
782 | } | |
783 | ||
784 | /* Speed support */ | |
785 | if (phydev->speed != pdata->phy_speed) { | |
786 | new_state = 1; | |
787 | ||
788 | switch (phydev->speed) { | |
789 | case SPEED_10000: | |
790 | hw_if->set_xgmii_speed(pdata); | |
791 | break; | |
792 | ||
793 | case SPEED_2500: | |
794 | hw_if->set_gmii_2500_speed(pdata); | |
795 | break; | |
796 | ||
797 | case SPEED_1000: | |
798 | hw_if->set_gmii_speed(pdata); | |
799 | break; | |
800 | } | |
801 | pdata->phy_speed = phydev->speed; | |
802 | } | |
803 | ||
804 | if (phydev->link != pdata->phy_link) { | |
805 | new_state = 1; | |
806 | pdata->phy_link = 1; | |
807 | } | |
808 | } else if (pdata->phy_link) { | |
809 | new_state = 1; | |
810 | pdata->phy_link = 0; | |
811 | pdata->phy_speed = SPEED_UNKNOWN; | |
812 | } | |
813 | ||
814 | if (new_state) | |
815 | phy_print_status(phydev); | |
816 | } | |
817 | ||
818 | static int xgbe_phy_init(struct xgbe_prv_data *pdata) | |
819 | { | |
820 | struct net_device *netdev = pdata->netdev; | |
821 | struct phy_device *phydev = pdata->phydev; | |
822 | int ret; | |
823 | ||
824 | pdata->phy_link = -1; | |
825 | pdata->phy_speed = SPEED_UNKNOWN; | |
826 | pdata->phy_tx_pause = pdata->tx_pause; | |
827 | pdata->phy_rx_pause = pdata->rx_pause; | |
828 | ||
829 | ret = phy_connect_direct(netdev, phydev, &xgbe_adjust_link, | |
830 | pdata->phy_mode); | |
831 | if (ret) { | |
832 | netdev_err(netdev, "phy_connect_direct failed\n"); | |
833 | return ret; | |
834 | } | |
835 | ||
836 | if (!phydev->drv || (phydev->drv->phy_id == 0)) { | |
837 | netdev_err(netdev, "phy_id not valid\n"); | |
838 | ret = -ENODEV; | |
839 | goto err_phy_connect; | |
840 | } | |
841 | DBGPR(" phy_connect_direct succeeded for PHY %s, link=%d\n", | |
842 | dev_name(&phydev->dev), phydev->link); | |
843 | ||
844 | return 0; | |
845 | ||
846 | err_phy_connect: | |
847 | phy_disconnect(phydev); | |
848 | ||
849 | return ret; | |
850 | } | |
851 | ||
852 | static void xgbe_phy_exit(struct xgbe_prv_data *pdata) | |
853 | { | |
854 | if (!pdata->phydev) | |
855 | return; | |
856 | ||
857 | phy_disconnect(pdata->phydev); | |
858 | } | |
859 | ||
c5aa9e3b LT |
860 | int xgbe_powerdown(struct net_device *netdev, unsigned int caller) |
861 | { | |
862 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
863 | struct xgbe_hw_if *hw_if = &pdata->hw_if; | |
864 | unsigned long flags; | |
865 | ||
866 | DBGPR("-->xgbe_powerdown\n"); | |
867 | ||
868 | if (!netif_running(netdev) || | |
869 | (caller == XGMAC_IOCTL_CONTEXT && pdata->power_down)) { | |
870 | netdev_alert(netdev, "Device is already powered down\n"); | |
871 | DBGPR("<--xgbe_powerdown\n"); | |
872 | return -EINVAL; | |
873 | } | |
874 | ||
c5aa9e3b LT |
875 | spin_lock_irqsave(&pdata->lock, flags); |
876 | ||
877 | if (caller == XGMAC_DRIVER_CONTEXT) | |
878 | netif_device_detach(netdev); | |
879 | ||
880 | netif_tx_stop_all_queues(netdev); | |
c5aa9e3b | 881 | |
c5aa9e3b LT |
882 | hw_if->powerdown_tx(pdata); |
883 | hw_if->powerdown_rx(pdata); | |
884 | ||
c30e76a7 LT |
885 | xgbe_napi_disable(pdata, 0); |
886 | ||
887 | phy_stop(pdata->phydev); | |
888 | ||
c5aa9e3b LT |
889 | pdata->power_down = 1; |
890 | ||
891 | spin_unlock_irqrestore(&pdata->lock, flags); | |
892 | ||
893 | DBGPR("<--xgbe_powerdown\n"); | |
894 | ||
895 | return 0; | |
896 | } | |
897 | ||
898 | int xgbe_powerup(struct net_device *netdev, unsigned int caller) | |
899 | { | |
900 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
901 | struct xgbe_hw_if *hw_if = &pdata->hw_if; | |
902 | unsigned long flags; | |
903 | ||
904 | DBGPR("-->xgbe_powerup\n"); | |
905 | ||
906 | if (!netif_running(netdev) || | |
907 | (caller == XGMAC_IOCTL_CONTEXT && !pdata->power_down)) { | |
908 | netdev_alert(netdev, "Device is already powered up\n"); | |
909 | DBGPR("<--xgbe_powerup\n"); | |
910 | return -EINVAL; | |
911 | } | |
912 | ||
913 | spin_lock_irqsave(&pdata->lock, flags); | |
914 | ||
915 | pdata->power_down = 0; | |
916 | ||
917 | phy_start(pdata->phydev); | |
918 | ||
c30e76a7 LT |
919 | xgbe_napi_enable(pdata, 0); |
920 | ||
c5aa9e3b LT |
921 | hw_if->powerup_tx(pdata); |
922 | hw_if->powerup_rx(pdata); | |
923 | ||
924 | if (caller == XGMAC_DRIVER_CONTEXT) | |
925 | netif_device_attach(netdev); | |
926 | ||
c5aa9e3b LT |
927 | netif_tx_start_all_queues(netdev); |
928 | ||
929 | spin_unlock_irqrestore(&pdata->lock, flags); | |
930 | ||
931 | DBGPR("<--xgbe_powerup\n"); | |
932 | ||
933 | return 0; | |
934 | } | |
935 | ||
936 | static int xgbe_start(struct xgbe_prv_data *pdata) | |
937 | { | |
938 | struct xgbe_hw_if *hw_if = &pdata->hw_if; | |
939 | struct net_device *netdev = pdata->netdev; | |
c30e76a7 | 940 | int ret; |
c5aa9e3b LT |
941 | |
942 | DBGPR("-->xgbe_start\n"); | |
943 | ||
944 | xgbe_set_rx_mode(netdev); | |
945 | ||
946 | hw_if->init(pdata); | |
947 | ||
948 | phy_start(pdata->phydev); | |
949 | ||
c30e76a7 LT |
950 | xgbe_napi_enable(pdata, 1); |
951 | ||
952 | ret = xgbe_request_irqs(pdata); | |
953 | if (ret) | |
954 | goto err_napi; | |
955 | ||
c5aa9e3b LT |
956 | hw_if->enable_tx(pdata); |
957 | hw_if->enable_rx(pdata); | |
958 | ||
959 | xgbe_init_tx_timers(pdata); | |
960 | ||
c5aa9e3b LT |
961 | netif_tx_start_all_queues(netdev); |
962 | ||
963 | DBGPR("<--xgbe_start\n"); | |
964 | ||
965 | return 0; | |
c30e76a7 LT |
966 | |
967 | err_napi: | |
968 | xgbe_napi_disable(pdata, 1); | |
969 | ||
970 | phy_stop(pdata->phydev); | |
971 | ||
972 | hw_if->exit(pdata); | |
973 | ||
974 | return ret; | |
c5aa9e3b LT |
975 | } |
976 | ||
977 | static void xgbe_stop(struct xgbe_prv_data *pdata) | |
978 | { | |
979 | struct xgbe_hw_if *hw_if = &pdata->hw_if; | |
5fb4b86a | 980 | struct xgbe_channel *channel; |
c5aa9e3b | 981 | struct net_device *netdev = pdata->netdev; |
5fb4b86a LT |
982 | struct netdev_queue *txq; |
983 | unsigned int i; | |
c5aa9e3b LT |
984 | |
985 | DBGPR("-->xgbe_stop\n"); | |
986 | ||
c5aa9e3b | 987 | netif_tx_stop_all_queues(netdev); |
c5aa9e3b LT |
988 | |
989 | xgbe_stop_tx_timers(pdata); | |
990 | ||
991 | hw_if->disable_tx(pdata); | |
992 | hw_if->disable_rx(pdata); | |
993 | ||
c30e76a7 LT |
994 | xgbe_free_irqs(pdata); |
995 | ||
996 | xgbe_napi_disable(pdata, 1); | |
997 | ||
998 | phy_stop(pdata->phydev); | |
999 | ||
1000 | hw_if->exit(pdata); | |
1001 | ||
5fb4b86a LT |
1002 | channel = pdata->channel; |
1003 | for (i = 0; i < pdata->channel_count; i++, channel++) { | |
1004 | if (!channel->tx_ring) | |
1005 | continue; | |
1006 | ||
1007 | txq = netdev_get_tx_queue(netdev, channel->queue_index); | |
1008 | netdev_tx_reset_queue(txq); | |
1009 | } | |
1010 | ||
c5aa9e3b LT |
1011 | DBGPR("<--xgbe_stop\n"); |
1012 | } | |
1013 | ||
916102c6 | 1014 | static void xgbe_restart_dev(struct xgbe_prv_data *pdata) |
c5aa9e3b | 1015 | { |
c5aa9e3b LT |
1016 | DBGPR("-->xgbe_restart_dev\n"); |
1017 | ||
1018 | /* If not running, "restart" will happen on open */ | |
1019 | if (!netif_running(pdata->netdev)) | |
1020 | return; | |
1021 | ||
1022 | xgbe_stop(pdata); | |
c5aa9e3b | 1023 | |
08dcc47c LT |
1024 | xgbe_free_tx_data(pdata); |
1025 | xgbe_free_rx_data(pdata); | |
c5aa9e3b | 1026 | |
c5aa9e3b LT |
1027 | xgbe_start(pdata); |
1028 | ||
1029 | DBGPR("<--xgbe_restart_dev\n"); | |
1030 | } | |
1031 | ||
1032 | static void xgbe_restart(struct work_struct *work) | |
1033 | { | |
1034 | struct xgbe_prv_data *pdata = container_of(work, | |
1035 | struct xgbe_prv_data, | |
1036 | restart_work); | |
1037 | ||
1038 | rtnl_lock(); | |
1039 | ||
916102c6 | 1040 | xgbe_restart_dev(pdata); |
c5aa9e3b LT |
1041 | |
1042 | rtnl_unlock(); | |
1043 | } | |
1044 | ||
23e4eef7 LT |
1045 | static void xgbe_tx_tstamp(struct work_struct *work) |
1046 | { | |
1047 | struct xgbe_prv_data *pdata = container_of(work, | |
1048 | struct xgbe_prv_data, | |
1049 | tx_tstamp_work); | |
1050 | struct skb_shared_hwtstamps hwtstamps; | |
1051 | u64 nsec; | |
1052 | unsigned long flags; | |
1053 | ||
1054 | if (pdata->tx_tstamp) { | |
1055 | nsec = timecounter_cyc2time(&pdata->tstamp_tc, | |
1056 | pdata->tx_tstamp); | |
1057 | ||
1058 | memset(&hwtstamps, 0, sizeof(hwtstamps)); | |
1059 | hwtstamps.hwtstamp = ns_to_ktime(nsec); | |
1060 | skb_tstamp_tx(pdata->tx_tstamp_skb, &hwtstamps); | |
1061 | } | |
1062 | ||
1063 | dev_kfree_skb_any(pdata->tx_tstamp_skb); | |
1064 | ||
1065 | spin_lock_irqsave(&pdata->tstamp_lock, flags); | |
1066 | pdata->tx_tstamp_skb = NULL; | |
1067 | spin_unlock_irqrestore(&pdata->tstamp_lock, flags); | |
1068 | } | |
1069 | ||
1070 | static int xgbe_get_hwtstamp_settings(struct xgbe_prv_data *pdata, | |
1071 | struct ifreq *ifreq) | |
1072 | { | |
1073 | if (copy_to_user(ifreq->ifr_data, &pdata->tstamp_config, | |
1074 | sizeof(pdata->tstamp_config))) | |
1075 | return -EFAULT; | |
1076 | ||
1077 | return 0; | |
1078 | } | |
1079 | ||
1080 | static int xgbe_set_hwtstamp_settings(struct xgbe_prv_data *pdata, | |
1081 | struct ifreq *ifreq) | |
1082 | { | |
1083 | struct hwtstamp_config config; | |
1084 | unsigned int mac_tscr; | |
1085 | ||
1086 | if (copy_from_user(&config, ifreq->ifr_data, sizeof(config))) | |
1087 | return -EFAULT; | |
1088 | ||
1089 | if (config.flags) | |
1090 | return -EINVAL; | |
1091 | ||
1092 | mac_tscr = 0; | |
1093 | ||
1094 | switch (config.tx_type) { | |
1095 | case HWTSTAMP_TX_OFF: | |
1096 | break; | |
1097 | ||
1098 | case HWTSTAMP_TX_ON: | |
1099 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1); | |
1100 | break; | |
1101 | ||
1102 | default: | |
1103 | return -ERANGE; | |
1104 | } | |
1105 | ||
1106 | switch (config.rx_filter) { | |
1107 | case HWTSTAMP_FILTER_NONE: | |
1108 | break; | |
1109 | ||
1110 | case HWTSTAMP_FILTER_ALL: | |
1111 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENALL, 1); | |
1112 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1); | |
1113 | break; | |
1114 | ||
1115 | /* PTP v2, UDP, any kind of event packet */ | |
1116 | case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: | |
1117 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSVER2ENA, 1); | |
1118 | /* PTP v1, UDP, any kind of event packet */ | |
1119 | case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: | |
1120 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV4ENA, 1); | |
1121 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV6ENA, 1); | |
1122 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, SNAPTYPSEL, 1); | |
1123 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1); | |
1124 | break; | |
1125 | ||
1126 | /* PTP v2, UDP, Sync packet */ | |
1127 | case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: | |
1128 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSVER2ENA, 1); | |
1129 | /* PTP v1, UDP, Sync packet */ | |
1130 | case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: | |
1131 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV4ENA, 1); | |
1132 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV6ENA, 1); | |
1133 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSEVNTENA, 1); | |
1134 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1); | |
1135 | break; | |
1136 | ||
1137 | /* PTP v2, UDP, Delay_req packet */ | |
1138 | case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: | |
1139 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSVER2ENA, 1); | |
1140 | /* PTP v1, UDP, Delay_req packet */ | |
1141 | case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: | |
1142 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV4ENA, 1); | |
1143 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV6ENA, 1); | |
1144 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSEVNTENA, 1); | |
1145 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSMSTRENA, 1); | |
1146 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1); | |
1147 | break; | |
1148 | ||
1149 | /* 802.AS1, Ethernet, any kind of event packet */ | |
1150 | case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: | |
1151 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, AV8021ASMEN, 1); | |
1152 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, SNAPTYPSEL, 1); | |
1153 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1); | |
1154 | break; | |
1155 | ||
1156 | /* 802.AS1, Ethernet, Sync packet */ | |
1157 | case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: | |
1158 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, AV8021ASMEN, 1); | |
1159 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSEVNTENA, 1); | |
1160 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1); | |
1161 | break; | |
1162 | ||
1163 | /* 802.AS1, Ethernet, Delay_req packet */ | |
1164 | case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: | |
1165 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, AV8021ASMEN, 1); | |
1166 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSMSTRENA, 1); | |
1167 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSEVNTENA, 1); | |
1168 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1); | |
1169 | break; | |
1170 | ||
1171 | /* PTP v2/802.AS1, any layer, any kind of event packet */ | |
1172 | case HWTSTAMP_FILTER_PTP_V2_EVENT: | |
1173 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSVER2ENA, 1); | |
1174 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPENA, 1); | |
1175 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV4ENA, 1); | |
1176 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV6ENA, 1); | |
1177 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, SNAPTYPSEL, 1); | |
1178 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1); | |
1179 | break; | |
1180 | ||
1181 | /* PTP v2/802.AS1, any layer, Sync packet */ | |
1182 | case HWTSTAMP_FILTER_PTP_V2_SYNC: | |
1183 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSVER2ENA, 1); | |
1184 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPENA, 1); | |
1185 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV4ENA, 1); | |
1186 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV6ENA, 1); | |
1187 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSEVNTENA, 1); | |
1188 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1); | |
1189 | break; | |
1190 | ||
1191 | /* PTP v2/802.AS1, any layer, Delay_req packet */ | |
1192 | case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: | |
1193 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSVER2ENA, 1); | |
1194 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPENA, 1); | |
1195 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV4ENA, 1); | |
1196 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV6ENA, 1); | |
1197 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSMSTRENA, 1); | |
1198 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSEVNTENA, 1); | |
1199 | XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1); | |
1200 | break; | |
1201 | ||
1202 | default: | |
1203 | return -ERANGE; | |
1204 | } | |
1205 | ||
1206 | pdata->hw_if.config_tstamp(pdata, mac_tscr); | |
1207 | ||
1208 | memcpy(&pdata->tstamp_config, &config, sizeof(config)); | |
1209 | ||
1210 | return 0; | |
1211 | } | |
1212 | ||
1213 | static void xgbe_prep_tx_tstamp(struct xgbe_prv_data *pdata, | |
1214 | struct sk_buff *skb, | |
1215 | struct xgbe_packet_data *packet) | |
1216 | { | |
1217 | unsigned long flags; | |
1218 | ||
1219 | if (XGMAC_GET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES, PTP)) { | |
1220 | spin_lock_irqsave(&pdata->tstamp_lock, flags); | |
1221 | if (pdata->tx_tstamp_skb) { | |
1222 | /* Another timestamp in progress, ignore this one */ | |
1223 | XGMAC_SET_BITS(packet->attributes, | |
1224 | TX_PACKET_ATTRIBUTES, PTP, 0); | |
1225 | } else { | |
1226 | pdata->tx_tstamp_skb = skb_get(skb); | |
1227 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; | |
1228 | } | |
1229 | spin_unlock_irqrestore(&pdata->tstamp_lock, flags); | |
1230 | } | |
1231 | ||
1232 | if (!XGMAC_GET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES, PTP)) | |
1233 | skb_tx_timestamp(skb); | |
1234 | } | |
1235 | ||
c5aa9e3b LT |
1236 | static void xgbe_prep_vlan(struct sk_buff *skb, struct xgbe_packet_data *packet) |
1237 | { | |
df8a39de JP |
1238 | if (skb_vlan_tag_present(skb)) |
1239 | packet->vlan_ctag = skb_vlan_tag_get(skb); | |
c5aa9e3b LT |
1240 | } |
1241 | ||
1242 | static int xgbe_prep_tso(struct sk_buff *skb, struct xgbe_packet_data *packet) | |
1243 | { | |
1244 | int ret; | |
1245 | ||
1246 | if (!XGMAC_GET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES, | |
1247 | TSO_ENABLE)) | |
1248 | return 0; | |
1249 | ||
1250 | ret = skb_cow_head(skb, 0); | |
1251 | if (ret) | |
1252 | return ret; | |
1253 | ||
1254 | packet->header_len = skb_transport_offset(skb) + tcp_hdrlen(skb); | |
1255 | packet->tcp_header_len = tcp_hdrlen(skb); | |
1256 | packet->tcp_payload_len = skb->len - packet->header_len; | |
1257 | packet->mss = skb_shinfo(skb)->gso_size; | |
1258 | DBGPR(" packet->header_len=%u\n", packet->header_len); | |
1259 | DBGPR(" packet->tcp_header_len=%u, packet->tcp_payload_len=%u\n", | |
1260 | packet->tcp_header_len, packet->tcp_payload_len); | |
1261 | DBGPR(" packet->mss=%u\n", packet->mss); | |
1262 | ||
5fb4b86a LT |
1263 | /* Update the number of packets that will ultimately be transmitted |
1264 | * along with the extra bytes for each extra packet | |
1265 | */ | |
1266 | packet->tx_packets = skb_shinfo(skb)->gso_segs; | |
1267 | packet->tx_bytes += (packet->tx_packets - 1) * packet->header_len; | |
1268 | ||
c5aa9e3b LT |
1269 | return 0; |
1270 | } | |
1271 | ||
1272 | static int xgbe_is_tso(struct sk_buff *skb) | |
1273 | { | |
1274 | if (skb->ip_summed != CHECKSUM_PARTIAL) | |
1275 | return 0; | |
1276 | ||
1277 | if (!skb_is_gso(skb)) | |
1278 | return 0; | |
1279 | ||
1280 | DBGPR(" TSO packet to be processed\n"); | |
1281 | ||
1282 | return 1; | |
1283 | } | |
1284 | ||
23e4eef7 LT |
1285 | static void xgbe_packet_info(struct xgbe_prv_data *pdata, |
1286 | struct xgbe_ring *ring, struct sk_buff *skb, | |
c5aa9e3b LT |
1287 | struct xgbe_packet_data *packet) |
1288 | { | |
1289 | struct skb_frag_struct *frag; | |
1290 | unsigned int context_desc; | |
1291 | unsigned int len; | |
1292 | unsigned int i; | |
1293 | ||
16958a2b LT |
1294 | packet->skb = skb; |
1295 | ||
c5aa9e3b LT |
1296 | context_desc = 0; |
1297 | packet->rdesc_count = 0; | |
1298 | ||
5fb4b86a LT |
1299 | packet->tx_packets = 1; |
1300 | packet->tx_bytes = skb->len; | |
1301 | ||
c5aa9e3b | 1302 | if (xgbe_is_tso(skb)) { |
a7beaf23 | 1303 | /* TSO requires an extra descriptor if mss is different */ |
c5aa9e3b LT |
1304 | if (skb_shinfo(skb)->gso_size != ring->tx.cur_mss) { |
1305 | context_desc = 1; | |
1306 | packet->rdesc_count++; | |
1307 | } | |
1308 | ||
a7beaf23 | 1309 | /* TSO requires an extra descriptor for TSO header */ |
c5aa9e3b LT |
1310 | packet->rdesc_count++; |
1311 | ||
1312 | XGMAC_SET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES, | |
1313 | TSO_ENABLE, 1); | |
1314 | XGMAC_SET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES, | |
1315 | CSUM_ENABLE, 1); | |
1316 | } else if (skb->ip_summed == CHECKSUM_PARTIAL) | |
1317 | XGMAC_SET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES, | |
1318 | CSUM_ENABLE, 1); | |
1319 | ||
df8a39de | 1320 | if (skb_vlan_tag_present(skb)) { |
c5aa9e3b | 1321 | /* VLAN requires an extra descriptor if tag is different */ |
df8a39de | 1322 | if (skb_vlan_tag_get(skb) != ring->tx.cur_vlan_ctag) |
c5aa9e3b LT |
1323 | /* We can share with the TSO context descriptor */ |
1324 | if (!context_desc) { | |
1325 | context_desc = 1; | |
1326 | packet->rdesc_count++; | |
1327 | } | |
1328 | ||
1329 | XGMAC_SET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES, | |
1330 | VLAN_CTAG, 1); | |
1331 | } | |
1332 | ||
23e4eef7 LT |
1333 | if ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && |
1334 | (pdata->tstamp_config.tx_type == HWTSTAMP_TX_ON)) | |
1335 | XGMAC_SET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES, | |
1336 | PTP, 1); | |
1337 | ||
c5aa9e3b LT |
1338 | for (len = skb_headlen(skb); len;) { |
1339 | packet->rdesc_count++; | |
d0a8ba6c | 1340 | len -= min_t(unsigned int, len, XGBE_TX_MAX_BUF_SIZE); |
c5aa9e3b LT |
1341 | } |
1342 | ||
1343 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
1344 | frag = &skb_shinfo(skb)->frags[i]; | |
1345 | for (len = skb_frag_size(frag); len; ) { | |
1346 | packet->rdesc_count++; | |
d0a8ba6c | 1347 | len -= min_t(unsigned int, len, XGBE_TX_MAX_BUF_SIZE); |
c5aa9e3b LT |
1348 | } |
1349 | } | |
1350 | } | |
1351 | ||
1352 | static int xgbe_open(struct net_device *netdev) | |
1353 | { | |
1354 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
c5aa9e3b LT |
1355 | struct xgbe_desc_if *desc_if = &pdata->desc_if; |
1356 | int ret; | |
1357 | ||
1358 | DBGPR("-->xgbe_open\n"); | |
1359 | ||
88131a81 LT |
1360 | /* Initialize the phy */ |
1361 | ret = xgbe_phy_init(pdata); | |
1362 | if (ret) | |
1363 | return ret; | |
1364 | ||
23e4eef7 LT |
1365 | /* Enable the clocks */ |
1366 | ret = clk_prepare_enable(pdata->sysclk); | |
c5aa9e3b | 1367 | if (ret) { |
23e4eef7 | 1368 | netdev_alert(netdev, "dma clk_prepare_enable failed\n"); |
88131a81 | 1369 | goto err_phy_init; |
c5aa9e3b LT |
1370 | } |
1371 | ||
23e4eef7 LT |
1372 | ret = clk_prepare_enable(pdata->ptpclk); |
1373 | if (ret) { | |
1374 | netdev_alert(netdev, "ptp clk_prepare_enable failed\n"); | |
1375 | goto err_sysclk; | |
1376 | } | |
1377 | ||
c5aa9e3b LT |
1378 | /* Calculate the Rx buffer size before allocating rings */ |
1379 | ret = xgbe_calc_rx_buf_size(netdev, netdev->mtu); | |
1380 | if (ret < 0) | |
23e4eef7 | 1381 | goto err_ptpclk; |
c5aa9e3b LT |
1382 | pdata->rx_buf_size = ret; |
1383 | ||
4780b7ca LT |
1384 | /* Allocate the channel and ring structures */ |
1385 | ret = xgbe_alloc_channels(pdata); | |
1386 | if (ret) | |
1387 | goto err_ptpclk; | |
1388 | ||
c5aa9e3b LT |
1389 | /* Allocate the ring descriptors and buffers */ |
1390 | ret = desc_if->alloc_ring_resources(pdata); | |
1391 | if (ret) | |
4780b7ca | 1392 | goto err_channels; |
c5aa9e3b | 1393 | |
23e4eef7 | 1394 | /* Initialize the device restart and Tx timestamp work struct */ |
c5aa9e3b | 1395 | INIT_WORK(&pdata->restart_work, xgbe_restart); |
23e4eef7 | 1396 | INIT_WORK(&pdata->tx_tstamp_work, xgbe_tx_tstamp); |
c5aa9e3b | 1397 | |
c5aa9e3b LT |
1398 | ret = xgbe_start(pdata); |
1399 | if (ret) | |
c30e76a7 | 1400 | goto err_rings; |
c5aa9e3b LT |
1401 | |
1402 | DBGPR("<--xgbe_open\n"); | |
1403 | ||
1404 | return 0; | |
1405 | ||
4780b7ca | 1406 | err_rings: |
c5aa9e3b LT |
1407 | desc_if->free_ring_resources(pdata); |
1408 | ||
4780b7ca LT |
1409 | err_channels: |
1410 | xgbe_free_channels(pdata); | |
1411 | ||
23e4eef7 LT |
1412 | err_ptpclk: |
1413 | clk_disable_unprepare(pdata->ptpclk); | |
1414 | ||
1415 | err_sysclk: | |
1416 | clk_disable_unprepare(pdata->sysclk); | |
c5aa9e3b | 1417 | |
88131a81 LT |
1418 | err_phy_init: |
1419 | xgbe_phy_exit(pdata); | |
1420 | ||
c5aa9e3b LT |
1421 | return ret; |
1422 | } | |
1423 | ||
1424 | static int xgbe_close(struct net_device *netdev) | |
1425 | { | |
1426 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
c5aa9e3b LT |
1427 | struct xgbe_desc_if *desc_if = &pdata->desc_if; |
1428 | ||
1429 | DBGPR("-->xgbe_close\n"); | |
1430 | ||
1431 | /* Stop the device */ | |
1432 | xgbe_stop(pdata); | |
1433 | ||
4780b7ca | 1434 | /* Free the ring descriptors and buffers */ |
c5aa9e3b LT |
1435 | desc_if->free_ring_resources(pdata); |
1436 | ||
e98c72c9 LT |
1437 | /* Free the channel and ring structures */ |
1438 | xgbe_free_channels(pdata); | |
1439 | ||
23e4eef7 LT |
1440 | /* Disable the clocks */ |
1441 | clk_disable_unprepare(pdata->ptpclk); | |
1442 | clk_disable_unprepare(pdata->sysclk); | |
c5aa9e3b | 1443 | |
88131a81 LT |
1444 | /* Release the phy */ |
1445 | xgbe_phy_exit(pdata); | |
1446 | ||
c5aa9e3b LT |
1447 | DBGPR("<--xgbe_close\n"); |
1448 | ||
1449 | return 0; | |
1450 | } | |
1451 | ||
1452 | static int xgbe_xmit(struct sk_buff *skb, struct net_device *netdev) | |
1453 | { | |
1454 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
1455 | struct xgbe_hw_if *hw_if = &pdata->hw_if; | |
1456 | struct xgbe_desc_if *desc_if = &pdata->desc_if; | |
1457 | struct xgbe_channel *channel; | |
1458 | struct xgbe_ring *ring; | |
1459 | struct xgbe_packet_data *packet; | |
5fb4b86a | 1460 | struct netdev_queue *txq; |
c5aa9e3b LT |
1461 | int ret; |
1462 | ||
1463 | DBGPR("-->xgbe_xmit: skb->len = %d\n", skb->len); | |
1464 | ||
1465 | channel = pdata->channel + skb->queue_mapping; | |
5fb4b86a | 1466 | txq = netdev_get_tx_queue(netdev, channel->queue_index); |
c5aa9e3b LT |
1467 | ring = channel->tx_ring; |
1468 | packet = &ring->packet_data; | |
1469 | ||
1470 | ret = NETDEV_TX_OK; | |
1471 | ||
c5aa9e3b LT |
1472 | if (skb->len == 0) { |
1473 | netdev_err(netdev, "empty skb received from stack\n"); | |
1474 | dev_kfree_skb_any(skb); | |
1475 | goto tx_netdev_return; | |
1476 | } | |
1477 | ||
1478 | /* Calculate preliminary packet info */ | |
1479 | memset(packet, 0, sizeof(*packet)); | |
23e4eef7 | 1480 | xgbe_packet_info(pdata, ring, skb, packet); |
c5aa9e3b LT |
1481 | |
1482 | /* Check that there are enough descriptors available */ | |
16958a2b LT |
1483 | ret = xgbe_maybe_stop_tx_queue(channel, ring, packet->rdesc_count); |
1484 | if (ret) | |
c5aa9e3b | 1485 | goto tx_netdev_return; |
c5aa9e3b LT |
1486 | |
1487 | ret = xgbe_prep_tso(skb, packet); | |
1488 | if (ret) { | |
1489 | netdev_err(netdev, "error processing TSO packet\n"); | |
1490 | dev_kfree_skb_any(skb); | |
1491 | goto tx_netdev_return; | |
1492 | } | |
1493 | xgbe_prep_vlan(skb, packet); | |
1494 | ||
1495 | if (!desc_if->map_tx_skb(channel, skb)) { | |
1496 | dev_kfree_skb_any(skb); | |
1497 | goto tx_netdev_return; | |
1498 | } | |
1499 | ||
23e4eef7 LT |
1500 | xgbe_prep_tx_tstamp(pdata, skb, packet); |
1501 | ||
5fb4b86a LT |
1502 | /* Report on the actual number of bytes (to be) sent */ |
1503 | netdev_tx_sent_queue(txq, packet->tx_bytes); | |
1504 | ||
c5aa9e3b | 1505 | /* Configure required descriptor fields for transmission */ |
a9d41981 | 1506 | hw_if->dev_xmit(channel); |
c5aa9e3b LT |
1507 | |
1508 | #ifdef XGMAC_ENABLE_TX_PKT_DUMP | |
1509 | xgbe_print_pkt(netdev, skb, true); | |
1510 | #endif | |
1511 | ||
16958a2b LT |
1512 | /* Stop the queue in advance if there may not be enough descriptors */ |
1513 | xgbe_maybe_stop_tx_queue(channel, ring, XGBE_TX_MAX_DESCS); | |
1514 | ||
1515 | ret = NETDEV_TX_OK; | |
1516 | ||
c5aa9e3b | 1517 | tx_netdev_return: |
c5aa9e3b LT |
1518 | return ret; |
1519 | } | |
1520 | ||
1521 | static void xgbe_set_rx_mode(struct net_device *netdev) | |
1522 | { | |
1523 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
1524 | struct xgbe_hw_if *hw_if = &pdata->hw_if; | |
1525 | unsigned int pr_mode, am_mode; | |
1526 | ||
1527 | DBGPR("-->xgbe_set_rx_mode\n"); | |
1528 | ||
1529 | pr_mode = ((netdev->flags & IFF_PROMISC) != 0); | |
1530 | am_mode = ((netdev->flags & IFF_ALLMULTI) != 0); | |
1531 | ||
c5aa9e3b LT |
1532 | hw_if->set_promiscuous_mode(pdata, pr_mode); |
1533 | hw_if->set_all_multicast_mode(pdata, am_mode); | |
b85e4d89 LT |
1534 | |
1535 | hw_if->add_mac_addresses(pdata); | |
c5aa9e3b LT |
1536 | |
1537 | DBGPR("<--xgbe_set_rx_mode\n"); | |
1538 | } | |
1539 | ||
1540 | static int xgbe_set_mac_address(struct net_device *netdev, void *addr) | |
1541 | { | |
1542 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
1543 | struct xgbe_hw_if *hw_if = &pdata->hw_if; | |
1544 | struct sockaddr *saddr = addr; | |
1545 | ||
1546 | DBGPR("-->xgbe_set_mac_address\n"); | |
1547 | ||
1548 | if (!is_valid_ether_addr(saddr->sa_data)) | |
1549 | return -EADDRNOTAVAIL; | |
1550 | ||
1551 | memcpy(netdev->dev_addr, saddr->sa_data, netdev->addr_len); | |
1552 | ||
1553 | hw_if->set_mac_address(pdata, netdev->dev_addr); | |
1554 | ||
1555 | DBGPR("<--xgbe_set_mac_address\n"); | |
1556 | ||
1557 | return 0; | |
1558 | } | |
1559 | ||
23e4eef7 LT |
1560 | static int xgbe_ioctl(struct net_device *netdev, struct ifreq *ifreq, int cmd) |
1561 | { | |
1562 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
1563 | int ret; | |
1564 | ||
1565 | switch (cmd) { | |
1566 | case SIOCGHWTSTAMP: | |
1567 | ret = xgbe_get_hwtstamp_settings(pdata, ifreq); | |
1568 | break; | |
1569 | ||
1570 | case SIOCSHWTSTAMP: | |
1571 | ret = xgbe_set_hwtstamp_settings(pdata, ifreq); | |
1572 | break; | |
1573 | ||
1574 | default: | |
1575 | ret = -EOPNOTSUPP; | |
1576 | } | |
1577 | ||
1578 | return ret; | |
1579 | } | |
1580 | ||
c5aa9e3b LT |
1581 | static int xgbe_change_mtu(struct net_device *netdev, int mtu) |
1582 | { | |
1583 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
1584 | int ret; | |
1585 | ||
1586 | DBGPR("-->xgbe_change_mtu\n"); | |
1587 | ||
1588 | ret = xgbe_calc_rx_buf_size(netdev, mtu); | |
1589 | if (ret < 0) | |
1590 | return ret; | |
1591 | ||
1592 | pdata->rx_buf_size = ret; | |
1593 | netdev->mtu = mtu; | |
1594 | ||
916102c6 | 1595 | xgbe_restart_dev(pdata); |
c5aa9e3b LT |
1596 | |
1597 | DBGPR("<--xgbe_change_mtu\n"); | |
1598 | ||
1599 | return 0; | |
1600 | } | |
1601 | ||
1602 | static struct rtnl_link_stats64 *xgbe_get_stats64(struct net_device *netdev, | |
1603 | struct rtnl_link_stats64 *s) | |
1604 | { | |
1605 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
1606 | struct xgbe_mmc_stats *pstats = &pdata->mmc_stats; | |
1607 | ||
1608 | DBGPR("-->%s\n", __func__); | |
1609 | ||
1610 | pdata->hw_if.read_mmc_stats(pdata); | |
1611 | ||
1612 | s->rx_packets = pstats->rxframecount_gb; | |
1613 | s->rx_bytes = pstats->rxoctetcount_gb; | |
1614 | s->rx_errors = pstats->rxframecount_gb - | |
1615 | pstats->rxbroadcastframes_g - | |
1616 | pstats->rxmulticastframes_g - | |
1617 | pstats->rxunicastframes_g; | |
1618 | s->multicast = pstats->rxmulticastframes_g; | |
1619 | s->rx_length_errors = pstats->rxlengtherror; | |
1620 | s->rx_crc_errors = pstats->rxcrcerror; | |
1621 | s->rx_fifo_errors = pstats->rxfifooverflow; | |
1622 | ||
1623 | s->tx_packets = pstats->txframecount_gb; | |
1624 | s->tx_bytes = pstats->txoctetcount_gb; | |
1625 | s->tx_errors = pstats->txframecount_gb - pstats->txframecount_g; | |
1626 | s->tx_dropped = netdev->stats.tx_dropped; | |
1627 | ||
1628 | DBGPR("<--%s\n", __func__); | |
1629 | ||
1630 | return s; | |
1631 | } | |
1632 | ||
801c62d9 LT |
1633 | static int xgbe_vlan_rx_add_vid(struct net_device *netdev, __be16 proto, |
1634 | u16 vid) | |
1635 | { | |
1636 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
1637 | struct xgbe_hw_if *hw_if = &pdata->hw_if; | |
1638 | ||
1639 | DBGPR("-->%s\n", __func__); | |
1640 | ||
1641 | set_bit(vid, pdata->active_vlans); | |
1642 | hw_if->update_vlan_hash_table(pdata); | |
1643 | ||
1644 | DBGPR("<--%s\n", __func__); | |
1645 | ||
1646 | return 0; | |
1647 | } | |
1648 | ||
1649 | static int xgbe_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, | |
1650 | u16 vid) | |
1651 | { | |
1652 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
1653 | struct xgbe_hw_if *hw_if = &pdata->hw_if; | |
1654 | ||
1655 | DBGPR("-->%s\n", __func__); | |
1656 | ||
1657 | clear_bit(vid, pdata->active_vlans); | |
1658 | hw_if->update_vlan_hash_table(pdata); | |
1659 | ||
1660 | DBGPR("<--%s\n", __func__); | |
1661 | ||
1662 | return 0; | |
1663 | } | |
1664 | ||
c5aa9e3b LT |
1665 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1666 | static void xgbe_poll_controller(struct net_device *netdev) | |
1667 | { | |
1668 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
9227dc5e LT |
1669 | struct xgbe_channel *channel; |
1670 | unsigned int i; | |
c5aa9e3b LT |
1671 | |
1672 | DBGPR("-->xgbe_poll_controller\n"); | |
1673 | ||
9227dc5e LT |
1674 | if (pdata->per_channel_irq) { |
1675 | channel = pdata->channel; | |
1676 | for (i = 0; i < pdata->channel_count; i++, channel++) | |
1677 | xgbe_dma_isr(channel->dma_irq, channel); | |
1678 | } else { | |
1679 | disable_irq(pdata->dev_irq); | |
1680 | xgbe_isr(pdata->dev_irq, pdata); | |
1681 | enable_irq(pdata->dev_irq); | |
1682 | } | |
c5aa9e3b LT |
1683 | |
1684 | DBGPR("<--xgbe_poll_controller\n"); | |
1685 | } | |
1686 | #endif /* End CONFIG_NET_POLL_CONTROLLER */ | |
1687 | ||
fca2d994 LT |
1688 | static int xgbe_setup_tc(struct net_device *netdev, u8 tc) |
1689 | { | |
1690 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
1691 | unsigned int offset, queue; | |
1692 | u8 i; | |
1693 | ||
1694 | if (tc && (tc != pdata->hw_feat.tc_cnt)) | |
1695 | return -EINVAL; | |
1696 | ||
1697 | if (tc) { | |
1698 | netdev_set_num_tc(netdev, tc); | |
1699 | for (i = 0, queue = 0, offset = 0; i < tc; i++) { | |
1700 | while ((queue < pdata->tx_q_count) && | |
1701 | (pdata->q2tc_map[queue] == i)) | |
1702 | queue++; | |
1703 | ||
1704 | DBGPR(" TC%u using TXq%u-%u\n", i, offset, queue - 1); | |
1705 | netdev_set_tc_queue(netdev, i, queue - offset, offset); | |
1706 | offset = queue; | |
1707 | } | |
1708 | } else { | |
1709 | netdev_reset_tc(netdev); | |
1710 | } | |
1711 | ||
1712 | return 0; | |
1713 | } | |
1714 | ||
c5aa9e3b LT |
1715 | static int xgbe_set_features(struct net_device *netdev, |
1716 | netdev_features_t features) | |
1717 | { | |
1718 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
1719 | struct xgbe_hw_if *hw_if = &pdata->hw_if; | |
5b9dfe29 LT |
1720 | netdev_features_t rxhash, rxcsum, rxvlan, rxvlan_filter; |
1721 | int ret = 0; | |
c5aa9e3b | 1722 | |
5b9dfe29 | 1723 | rxhash = pdata->netdev_features & NETIF_F_RXHASH; |
801c62d9 LT |
1724 | rxcsum = pdata->netdev_features & NETIF_F_RXCSUM; |
1725 | rxvlan = pdata->netdev_features & NETIF_F_HW_VLAN_CTAG_RX; | |
1726 | rxvlan_filter = pdata->netdev_features & NETIF_F_HW_VLAN_CTAG_FILTER; | |
c5aa9e3b | 1727 | |
5b9dfe29 LT |
1728 | if ((features & NETIF_F_RXHASH) && !rxhash) |
1729 | ret = hw_if->enable_rss(pdata); | |
1730 | else if (!(features & NETIF_F_RXHASH) && rxhash) | |
1731 | ret = hw_if->disable_rss(pdata); | |
1732 | if (ret) | |
1733 | return ret; | |
1734 | ||
801c62d9 | 1735 | if ((features & NETIF_F_RXCSUM) && !rxcsum) |
c5aa9e3b | 1736 | hw_if->enable_rx_csum(pdata); |
801c62d9 | 1737 | else if (!(features & NETIF_F_RXCSUM) && rxcsum) |
c5aa9e3b | 1738 | hw_if->disable_rx_csum(pdata); |
c5aa9e3b | 1739 | |
801c62d9 | 1740 | if ((features & NETIF_F_HW_VLAN_CTAG_RX) && !rxvlan) |
c5aa9e3b | 1741 | hw_if->enable_rx_vlan_stripping(pdata); |
801c62d9 | 1742 | else if (!(features & NETIF_F_HW_VLAN_CTAG_RX) && rxvlan) |
c5aa9e3b | 1743 | hw_if->disable_rx_vlan_stripping(pdata); |
801c62d9 LT |
1744 | |
1745 | if ((features & NETIF_F_HW_VLAN_CTAG_FILTER) && !rxvlan_filter) | |
1746 | hw_if->enable_rx_vlan_filtering(pdata); | |
1747 | else if (!(features & NETIF_F_HW_VLAN_CTAG_FILTER) && rxvlan_filter) | |
1748 | hw_if->disable_rx_vlan_filtering(pdata); | |
c5aa9e3b LT |
1749 | |
1750 | pdata->netdev_features = features; | |
1751 | ||
1752 | DBGPR("<--xgbe_set_features\n"); | |
1753 | ||
1754 | return 0; | |
1755 | } | |
1756 | ||
1757 | static const struct net_device_ops xgbe_netdev_ops = { | |
1758 | .ndo_open = xgbe_open, | |
1759 | .ndo_stop = xgbe_close, | |
1760 | .ndo_start_xmit = xgbe_xmit, | |
1761 | .ndo_set_rx_mode = xgbe_set_rx_mode, | |
1762 | .ndo_set_mac_address = xgbe_set_mac_address, | |
1763 | .ndo_validate_addr = eth_validate_addr, | |
23e4eef7 | 1764 | .ndo_do_ioctl = xgbe_ioctl, |
c5aa9e3b LT |
1765 | .ndo_change_mtu = xgbe_change_mtu, |
1766 | .ndo_get_stats64 = xgbe_get_stats64, | |
801c62d9 LT |
1767 | .ndo_vlan_rx_add_vid = xgbe_vlan_rx_add_vid, |
1768 | .ndo_vlan_rx_kill_vid = xgbe_vlan_rx_kill_vid, | |
c5aa9e3b LT |
1769 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1770 | .ndo_poll_controller = xgbe_poll_controller, | |
1771 | #endif | |
fca2d994 | 1772 | .ndo_setup_tc = xgbe_setup_tc, |
c5aa9e3b LT |
1773 | .ndo_set_features = xgbe_set_features, |
1774 | }; | |
1775 | ||
1776 | struct net_device_ops *xgbe_get_netdev_ops(void) | |
1777 | { | |
1778 | return (struct net_device_ops *)&xgbe_netdev_ops; | |
1779 | } | |
1780 | ||
9867e8fb LT |
1781 | static void xgbe_rx_refresh(struct xgbe_channel *channel) |
1782 | { | |
1783 | struct xgbe_prv_data *pdata = channel->pdata; | |
270894e7 | 1784 | struct xgbe_hw_if *hw_if = &pdata->hw_if; |
9867e8fb LT |
1785 | struct xgbe_desc_if *desc_if = &pdata->desc_if; |
1786 | struct xgbe_ring *ring = channel->rx_ring; | |
1787 | struct xgbe_ring_data *rdata; | |
1788 | ||
270894e7 LT |
1789 | while (ring->dirty != ring->cur) { |
1790 | rdata = XGBE_GET_DESC_DATA(ring, ring->dirty); | |
1791 | ||
1792 | /* Reset rdata values */ | |
1793 | desc_if->unmap_rdata(pdata, rdata); | |
1794 | ||
1795 | if (desc_if->map_rx_buffer(pdata, ring, rdata)) | |
1796 | break; | |
1797 | ||
1798 | hw_if->rx_desc_reset(rdata); | |
1799 | ||
1800 | ring->dirty++; | |
1801 | } | |
9867e8fb LT |
1802 | |
1803 | /* Update the Rx Tail Pointer Register with address of | |
1804 | * the last cleaned entry */ | |
270894e7 | 1805 | rdata = XGBE_GET_DESC_DATA(ring, ring->dirty - 1); |
9867e8fb LT |
1806 | XGMAC_DMA_IOWRITE(channel, DMA_CH_RDTR_LO, |
1807 | lower_32_bits(rdata->rdesc_dma)); | |
1808 | } | |
1809 | ||
08dcc47c LT |
1810 | static struct sk_buff *xgbe_create_skb(struct xgbe_prv_data *pdata, |
1811 | struct xgbe_ring_data *rdata, | |
174fd259 | 1812 | unsigned int *len) |
08dcc47c LT |
1813 | { |
1814 | struct net_device *netdev = pdata->netdev; | |
1815 | struct sk_buff *skb; | |
1816 | u8 *packet; | |
1817 | unsigned int copy_len; | |
1818 | ||
c9f140eb | 1819 | skb = netdev_alloc_skb_ip_align(netdev, rdata->rx.hdr.dma_len); |
08dcc47c LT |
1820 | if (!skb) |
1821 | return NULL; | |
1822 | ||
c9f140eb LT |
1823 | packet = page_address(rdata->rx.hdr.pa.pages) + |
1824 | rdata->rx.hdr.pa.pages_offset; | |
1825 | copy_len = (rdata->rx.hdr_len) ? rdata->rx.hdr_len : *len; | |
1826 | copy_len = min(rdata->rx.hdr.dma_len, copy_len); | |
08dcc47c LT |
1827 | skb_copy_to_linear_data(skb, packet, copy_len); |
1828 | skb_put(skb, copy_len); | |
1829 | ||
174fd259 | 1830 | *len -= copy_len; |
08dcc47c LT |
1831 | |
1832 | return skb; | |
1833 | } | |
1834 | ||
c5aa9e3b LT |
1835 | static int xgbe_tx_poll(struct xgbe_channel *channel) |
1836 | { | |
1837 | struct xgbe_prv_data *pdata = channel->pdata; | |
1838 | struct xgbe_hw_if *hw_if = &pdata->hw_if; | |
1839 | struct xgbe_desc_if *desc_if = &pdata->desc_if; | |
1840 | struct xgbe_ring *ring = channel->tx_ring; | |
1841 | struct xgbe_ring_data *rdata; | |
1842 | struct xgbe_ring_desc *rdesc; | |
1843 | struct net_device *netdev = pdata->netdev; | |
5fb4b86a | 1844 | struct netdev_queue *txq; |
c5aa9e3b | 1845 | int processed = 0; |
5fb4b86a | 1846 | unsigned int tx_packets = 0, tx_bytes = 0; |
c5aa9e3b LT |
1847 | |
1848 | DBGPR("-->xgbe_tx_poll\n"); | |
1849 | ||
1850 | /* Nothing to do if there isn't a Tx ring for this channel */ | |
1851 | if (!ring) | |
1852 | return 0; | |
1853 | ||
5fb4b86a LT |
1854 | txq = netdev_get_tx_queue(netdev, channel->queue_index); |
1855 | ||
d0a8ba6c | 1856 | while ((processed < XGBE_TX_DESC_MAX_PROC) && |
244d62be | 1857 | (ring->dirty != ring->cur)) { |
d0a8ba6c | 1858 | rdata = XGBE_GET_DESC_DATA(ring, ring->dirty); |
c5aa9e3b LT |
1859 | rdesc = rdata->rdesc; |
1860 | ||
1861 | if (!hw_if->tx_complete(rdesc)) | |
1862 | break; | |
1863 | ||
5449e271 LT |
1864 | /* Make sure descriptor fields are read after reading the OWN |
1865 | * bit */ | |
1866 | rmb(); | |
1867 | ||
c5aa9e3b LT |
1868 | #ifdef XGMAC_ENABLE_TX_DESC_DUMP |
1869 | xgbe_dump_tx_desc(ring, ring->dirty, 1, 0); | |
1870 | #endif | |
1871 | ||
5fb4b86a LT |
1872 | if (hw_if->is_last_desc(rdesc)) { |
1873 | tx_packets += rdata->tx.packets; | |
1874 | tx_bytes += rdata->tx.bytes; | |
1875 | } | |
1876 | ||
c5aa9e3b | 1877 | /* Free the SKB and reset the descriptor for re-use */ |
08dcc47c | 1878 | desc_if->unmap_rdata(pdata, rdata); |
c5aa9e3b LT |
1879 | hw_if->tx_desc_reset(rdata); |
1880 | ||
1881 | processed++; | |
1882 | ring->dirty++; | |
1883 | } | |
1884 | ||
5fb4b86a | 1885 | if (!processed) |
a83ef427 | 1886 | return 0; |
5fb4b86a LT |
1887 | |
1888 | netdev_tx_completed_queue(txq, tx_packets, tx_bytes); | |
1889 | ||
c5aa9e3b | 1890 | if ((ring->tx.queue_stopped == 1) && |
d0a8ba6c | 1891 | (xgbe_tx_avail_desc(ring) > XGBE_TX_DESC_MIN_FREE)) { |
c5aa9e3b | 1892 | ring->tx.queue_stopped = 0; |
5fb4b86a | 1893 | netif_tx_wake_queue(txq); |
c5aa9e3b LT |
1894 | } |
1895 | ||
1896 | DBGPR("<--xgbe_tx_poll: processed=%d\n", processed); | |
1897 | ||
c5aa9e3b LT |
1898 | return processed; |
1899 | } | |
1900 | ||
1901 | static int xgbe_rx_poll(struct xgbe_channel *channel, int budget) | |
1902 | { | |
1903 | struct xgbe_prv_data *pdata = channel->pdata; | |
1904 | struct xgbe_hw_if *hw_if = &pdata->hw_if; | |
c5aa9e3b LT |
1905 | struct xgbe_ring *ring = channel->rx_ring; |
1906 | struct xgbe_ring_data *rdata; | |
1907 | struct xgbe_packet_data *packet; | |
1908 | struct net_device *netdev = pdata->netdev; | |
9227dc5e | 1909 | struct napi_struct *napi; |
c5aa9e3b | 1910 | struct sk_buff *skb; |
23e4eef7 LT |
1911 | struct skb_shared_hwtstamps *hwtstamps; |
1912 | unsigned int incomplete, error, context_next, context; | |
1913 | unsigned int len, put_len, max_len; | |
55ca6bcd LT |
1914 | unsigned int received = 0; |
1915 | int packet_count = 0; | |
c5aa9e3b LT |
1916 | |
1917 | DBGPR("-->xgbe_rx_poll: budget=%d\n", budget); | |
1918 | ||
1919 | /* Nothing to do if there isn't a Rx ring for this channel */ | |
1920 | if (!ring) | |
1921 | return 0; | |
1922 | ||
9227dc5e LT |
1923 | napi = (pdata->per_channel_irq) ? &channel->napi : &pdata->napi; |
1924 | ||
23e4eef7 | 1925 | rdata = XGBE_GET_DESC_DATA(ring, ring->cur); |
c5aa9e3b | 1926 | packet = &ring->packet_data; |
55ca6bcd | 1927 | while (packet_count < budget) { |
c5aa9e3b LT |
1928 | DBGPR(" cur = %d\n", ring->cur); |
1929 | ||
23e4eef7 LT |
1930 | /* First time in loop see if we need to restore state */ |
1931 | if (!received && rdata->state_saved) { | |
1932 | incomplete = rdata->state.incomplete; | |
1933 | context_next = rdata->state.context_next; | |
1934 | skb = rdata->state.skb; | |
1935 | error = rdata->state.error; | |
1936 | len = rdata->state.len; | |
1937 | } else { | |
1938 | memset(packet, 0, sizeof(*packet)); | |
1939 | incomplete = 0; | |
1940 | context_next = 0; | |
1941 | skb = NULL; | |
1942 | error = 0; | |
1943 | len = 0; | |
1944 | } | |
c5aa9e3b LT |
1945 | |
1946 | read_again: | |
23e4eef7 LT |
1947 | rdata = XGBE_GET_DESC_DATA(ring, ring->cur); |
1948 | ||
270894e7 | 1949 | if (xgbe_rx_dirty_desc(ring) > (XGBE_RX_DESC_CNT >> 3)) |
9867e8fb LT |
1950 | xgbe_rx_refresh(channel); |
1951 | ||
c5aa9e3b LT |
1952 | if (hw_if->dev_read(channel)) |
1953 | break; | |
1954 | ||
1955 | received++; | |
1956 | ring->cur++; | |
c5aa9e3b | 1957 | |
c5aa9e3b LT |
1958 | incomplete = XGMAC_GET_BITS(packet->attributes, |
1959 | RX_PACKET_ATTRIBUTES, | |
1960 | INCOMPLETE); | |
23e4eef7 LT |
1961 | context_next = XGMAC_GET_BITS(packet->attributes, |
1962 | RX_PACKET_ATTRIBUTES, | |
1963 | CONTEXT_NEXT); | |
1964 | context = XGMAC_GET_BITS(packet->attributes, | |
1965 | RX_PACKET_ATTRIBUTES, | |
1966 | CONTEXT); | |
c5aa9e3b LT |
1967 | |
1968 | /* Earlier error, just drain the remaining data */ | |
23e4eef7 | 1969 | if ((incomplete || context_next) && error) |
c5aa9e3b LT |
1970 | goto read_again; |
1971 | ||
1972 | if (error || packet->errors) { | |
1973 | if (packet->errors) | |
1974 | DBGPR("Error in received packet\n"); | |
1975 | dev_kfree_skb(skb); | |
55ca6bcd | 1976 | goto next_packet; |
c5aa9e3b LT |
1977 | } |
1978 | ||
23e4eef7 | 1979 | if (!context) { |
c9f140eb | 1980 | put_len = rdata->rx.len - len; |
08dcc47c LT |
1981 | len += put_len; |
1982 | ||
1983 | if (!skb) { | |
174fd259 | 1984 | dma_sync_single_for_cpu(pdata->dev, |
c9f140eb LT |
1985 | rdata->rx.hdr.dma, |
1986 | rdata->rx.hdr.dma_len, | |
174fd259 LT |
1987 | DMA_FROM_DEVICE); |
1988 | ||
1989 | skb = xgbe_create_skb(pdata, rdata, &put_len); | |
08dcc47c LT |
1990 | if (!skb) { |
1991 | error = 1; | |
f5eecbbe | 1992 | goto skip_data; |
c5aa9e3b | 1993 | } |
c5aa9e3b | 1994 | } |
08dcc47c | 1995 | |
174fd259 LT |
1996 | if (put_len) { |
1997 | dma_sync_single_for_cpu(pdata->dev, | |
c9f140eb LT |
1998 | rdata->rx.buf.dma, |
1999 | rdata->rx.buf.dma_len, | |
174fd259 LT |
2000 | DMA_FROM_DEVICE); |
2001 | ||
2002 | skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, | |
c9f140eb LT |
2003 | rdata->rx.buf.pa.pages, |
2004 | rdata->rx.buf.pa.pages_offset, | |
2005 | put_len, rdata->rx.buf.dma_len); | |
2006 | rdata->rx.buf.pa.pages = NULL; | |
174fd259 | 2007 | } |
c5aa9e3b | 2008 | } |
c5aa9e3b | 2009 | |
f5eecbbe | 2010 | skip_data: |
23e4eef7 | 2011 | if (incomplete || context_next) |
c5aa9e3b LT |
2012 | goto read_again; |
2013 | ||
23e4eef7 | 2014 | if (!skb) |
55ca6bcd | 2015 | goto next_packet; |
23e4eef7 | 2016 | |
c5aa9e3b LT |
2017 | /* Be sure we don't exceed the configured MTU */ |
2018 | max_len = netdev->mtu + ETH_HLEN; | |
2019 | if (!(netdev->features & NETIF_F_HW_VLAN_CTAG_RX) && | |
2020 | (skb->protocol == htons(ETH_P_8021Q))) | |
2021 | max_len += VLAN_HLEN; | |
2022 | ||
2023 | if (skb->len > max_len) { | |
2024 | DBGPR("packet length exceeds configured MTU\n"); | |
2025 | dev_kfree_skb(skb); | |
55ca6bcd | 2026 | goto next_packet; |
c5aa9e3b LT |
2027 | } |
2028 | ||
2029 | #ifdef XGMAC_ENABLE_RX_PKT_DUMP | |
2030 | xgbe_print_pkt(netdev, skb, false); | |
2031 | #endif | |
2032 | ||
2033 | skb_checksum_none_assert(skb); | |
2034 | if (XGMAC_GET_BITS(packet->attributes, | |
2035 | RX_PACKET_ATTRIBUTES, CSUM_DONE)) | |
2036 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
2037 | ||
2038 | if (XGMAC_GET_BITS(packet->attributes, | |
2039 | RX_PACKET_ATTRIBUTES, VLAN_CTAG)) | |
2040 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), | |
2041 | packet->vlan_ctag); | |
2042 | ||
23e4eef7 LT |
2043 | if (XGMAC_GET_BITS(packet->attributes, |
2044 | RX_PACKET_ATTRIBUTES, RX_TSTAMP)) { | |
2045 | u64 nsec; | |
2046 | ||
2047 | nsec = timecounter_cyc2time(&pdata->tstamp_tc, | |
2048 | packet->rx_tstamp); | |
2049 | hwtstamps = skb_hwtstamps(skb); | |
2050 | hwtstamps->hwtstamp = ns_to_ktime(nsec); | |
2051 | } | |
2052 | ||
5b9dfe29 LT |
2053 | if (XGMAC_GET_BITS(packet->attributes, |
2054 | RX_PACKET_ATTRIBUTES, RSS_HASH)) | |
2055 | skb_set_hash(skb, packet->rss_hash, | |
2056 | packet->rss_hash_type); | |
2057 | ||
c5aa9e3b LT |
2058 | skb->dev = netdev; |
2059 | skb->protocol = eth_type_trans(skb, netdev); | |
2060 | skb_record_rx_queue(skb, channel->queue_index); | |
9227dc5e | 2061 | skb_mark_napi_id(skb, napi); |
c5aa9e3b LT |
2062 | |
2063 | netdev->last_rx = jiffies; | |
9227dc5e | 2064 | napi_gro_receive(napi, skb); |
55ca6bcd LT |
2065 | |
2066 | next_packet: | |
2067 | packet_count++; | |
c5aa9e3b LT |
2068 | } |
2069 | ||
23e4eef7 LT |
2070 | /* Check if we need to save state before leaving */ |
2071 | if (received && (incomplete || context_next)) { | |
2072 | rdata = XGBE_GET_DESC_DATA(ring, ring->cur); | |
2073 | rdata->state_saved = 1; | |
2074 | rdata->state.incomplete = incomplete; | |
2075 | rdata->state.context_next = context_next; | |
2076 | rdata->state.skb = skb; | |
2077 | rdata->state.len = len; | |
2078 | rdata->state.error = error; | |
2079 | } | |
2080 | ||
55ca6bcd | 2081 | DBGPR("<--xgbe_rx_poll: packet_count = %d\n", packet_count); |
c5aa9e3b | 2082 | |
55ca6bcd | 2083 | return packet_count; |
c5aa9e3b LT |
2084 | } |
2085 | ||
9227dc5e LT |
2086 | static int xgbe_one_poll(struct napi_struct *napi, int budget) |
2087 | { | |
2088 | struct xgbe_channel *channel = container_of(napi, struct xgbe_channel, | |
2089 | napi); | |
2090 | int processed = 0; | |
2091 | ||
2092 | DBGPR("-->xgbe_one_poll: budget=%d\n", budget); | |
2093 | ||
2094 | /* Cleanup Tx ring first */ | |
2095 | xgbe_tx_poll(channel); | |
2096 | ||
2097 | /* Process Rx ring next */ | |
2098 | processed = xgbe_rx_poll(channel, budget); | |
2099 | ||
2100 | /* If we processed everything, we are done */ | |
2101 | if (processed < budget) { | |
2102 | /* Turn off polling */ | |
2103 | napi_complete(napi); | |
2104 | ||
2105 | /* Enable Tx and Rx interrupts */ | |
2106 | enable_irq(channel->dma_irq); | |
2107 | } | |
2108 | ||
2109 | DBGPR("<--xgbe_one_poll: received = %d\n", processed); | |
2110 | ||
2111 | return processed; | |
2112 | } | |
2113 | ||
2114 | static int xgbe_all_poll(struct napi_struct *napi, int budget) | |
c5aa9e3b LT |
2115 | { |
2116 | struct xgbe_prv_data *pdata = container_of(napi, struct xgbe_prv_data, | |
2117 | napi); | |
2118 | struct xgbe_channel *channel; | |
9867e8fb LT |
2119 | int ring_budget; |
2120 | int processed, last_processed; | |
c5aa9e3b LT |
2121 | unsigned int i; |
2122 | ||
9227dc5e | 2123 | DBGPR("-->xgbe_all_poll: budget=%d\n", budget); |
c5aa9e3b | 2124 | |
c5aa9e3b | 2125 | processed = 0; |
9867e8fb LT |
2126 | ring_budget = budget / pdata->rx_ring_count; |
2127 | do { | |
2128 | last_processed = processed; | |
2129 | ||
2130 | channel = pdata->channel; | |
2131 | for (i = 0; i < pdata->channel_count; i++, channel++) { | |
2132 | /* Cleanup Tx ring first */ | |
2133 | xgbe_tx_poll(channel); | |
2134 | ||
2135 | /* Process Rx ring next */ | |
2136 | if (ring_budget > (budget - processed)) | |
2137 | ring_budget = budget - processed; | |
2138 | processed += xgbe_rx_poll(channel, ring_budget); | |
2139 | } | |
2140 | } while ((processed < budget) && (processed != last_processed)); | |
c5aa9e3b LT |
2141 | |
2142 | /* If we processed everything, we are done */ | |
2143 | if (processed < budget) { | |
2144 | /* Turn off polling */ | |
2145 | napi_complete(napi); | |
2146 | ||
2147 | /* Enable Tx and Rx interrupts */ | |
2148 | xgbe_enable_rx_tx_ints(pdata); | |
2149 | } | |
2150 | ||
9227dc5e | 2151 | DBGPR("<--xgbe_all_poll: received = %d\n", processed); |
c5aa9e3b LT |
2152 | |
2153 | return processed; | |
2154 | } | |
2155 | ||
2156 | void xgbe_dump_tx_desc(struct xgbe_ring *ring, unsigned int idx, | |
2157 | unsigned int count, unsigned int flag) | |
2158 | { | |
2159 | struct xgbe_ring_data *rdata; | |
2160 | struct xgbe_ring_desc *rdesc; | |
2161 | ||
2162 | while (count--) { | |
d0a8ba6c | 2163 | rdata = XGBE_GET_DESC_DATA(ring, idx); |
c5aa9e3b | 2164 | rdesc = rdata->rdesc; |
174fd259 LT |
2165 | pr_alert("TX_NORMAL_DESC[%d %s] = %08x:%08x:%08x:%08x\n", idx, |
2166 | (flag == 1) ? "QUEUED FOR TX" : "TX BY DEVICE", | |
2167 | le32_to_cpu(rdesc->desc0), le32_to_cpu(rdesc->desc1), | |
2168 | le32_to_cpu(rdesc->desc2), le32_to_cpu(rdesc->desc3)); | |
c5aa9e3b LT |
2169 | idx++; |
2170 | } | |
2171 | } | |
2172 | ||
2173 | void xgbe_dump_rx_desc(struct xgbe_ring *ring, struct xgbe_ring_desc *desc, | |
2174 | unsigned int idx) | |
2175 | { | |
174fd259 LT |
2176 | pr_alert("RX_NORMAL_DESC[%d RX BY DEVICE] = %08x:%08x:%08x:%08x\n", idx, |
2177 | le32_to_cpu(desc->desc0), le32_to_cpu(desc->desc1), | |
2178 | le32_to_cpu(desc->desc2), le32_to_cpu(desc->desc3)); | |
c5aa9e3b LT |
2179 | } |
2180 | ||
2181 | void xgbe_print_pkt(struct net_device *netdev, struct sk_buff *skb, bool tx_rx) | |
2182 | { | |
2183 | struct ethhdr *eth = (struct ethhdr *)skb->data; | |
2184 | unsigned char *buf = skb->data; | |
2185 | unsigned char buffer[128]; | |
2186 | unsigned int i, j; | |
2187 | ||
2188 | netdev_alert(netdev, "\n************** SKB dump ****************\n"); | |
2189 | ||
2190 | netdev_alert(netdev, "%s packet of %d bytes\n", | |
2191 | (tx_rx ? "TX" : "RX"), skb->len); | |
2192 | ||
2193 | netdev_alert(netdev, "Dst MAC addr: %pM\n", eth->h_dest); | |
2194 | netdev_alert(netdev, "Src MAC addr: %pM\n", eth->h_source); | |
2195 | netdev_alert(netdev, "Protocol: 0x%04hx\n", ntohs(eth->h_proto)); | |
2196 | ||
2197 | for (i = 0, j = 0; i < skb->len;) { | |
2198 | j += snprintf(buffer + j, sizeof(buffer) - j, "%02hhx", | |
2199 | buf[i++]); | |
2200 | ||
2201 | if ((i % 32) == 0) { | |
2202 | netdev_alert(netdev, " 0x%04x: %s\n", i - 32, buffer); | |
2203 | j = 0; | |
2204 | } else if ((i % 16) == 0) { | |
2205 | buffer[j++] = ' '; | |
2206 | buffer[j++] = ' '; | |
2207 | } else if ((i % 4) == 0) { | |
2208 | buffer[j++] = ' '; | |
2209 | } | |
2210 | } | |
2211 | if (i % 32) | |
2212 | netdev_alert(netdev, " 0x%04x: %s\n", i - (i % 32), buffer); | |
2213 | ||
2214 | netdev_alert(netdev, "\n************** SKB dump ****************\n"); | |
2215 | } |