2 * AMD 10Gb Ethernet driver
4 * This file is available to you under your choice of the following two
9 * Copyright (c) 2014-2016 Advanced Micro Devices, Inc.
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.
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.
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/>.
24 * This file incorporates work covered by the following copyright and
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
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:
41 * The above copyright notice and this permission notice shall be included
42 * in all copies or substantial portions of the Software.
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.
57 * License 2: Modified BSD
59 * Copyright (c) 2014-2016 Advanced Micro Devices, Inc.
60 * All rights reserved.
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.
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.
84 * This file incorporates work covered by the following copyright and
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
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:
101 * The above copyright notice and this permission notice shall be included
102 * in all copies or substantial portions of the Software.
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.
117 #include <linux/platform_device.h>
118 #include <linux/spinlock.h>
119 #include <linux/tcp.h>
120 #include <linux/if_vlan.h>
121 #include <net/busy_poll.h>
122 #include <linux/clk.h>
123 #include <linux/if_ether.h>
124 #include <linux/net_tstamp.h>
125 #include <linux/phy.h>
128 #include "xgbe-common.h"
130 static int xgbe_one_poll(struct napi_struct
*, int);
131 static int xgbe_all_poll(struct napi_struct
*, int);
133 static int xgbe_alloc_channels(struct xgbe_prv_data
*pdata
)
135 struct xgbe_channel
*channel_mem
, *channel
;
136 struct xgbe_ring
*tx_ring
, *rx_ring
;
137 unsigned int count
, i
;
140 count
= max_t(unsigned int, pdata
->tx_ring_count
, pdata
->rx_ring_count
);
142 channel_mem
= kcalloc(count
, sizeof(struct xgbe_channel
), GFP_KERNEL
);
146 tx_ring
= kcalloc(pdata
->tx_ring_count
, sizeof(struct xgbe_ring
),
151 rx_ring
= kcalloc(pdata
->rx_ring_count
, sizeof(struct xgbe_ring
),
156 for (i
= 0, channel
= channel_mem
; i
< count
; i
++, channel
++) {
157 snprintf(channel
->name
, sizeof(channel
->name
), "channel-%u", i
);
158 channel
->pdata
= pdata
;
159 channel
->queue_index
= i
;
160 channel
->dma_regs
= pdata
->xgmac_regs
+ DMA_CH_BASE
+
163 if (pdata
->per_channel_irq
) {
164 /* Get the DMA interrupt (offset 1) */
165 ret
= platform_get_irq(pdata
->pdev
, i
+ 1);
167 netdev_err(pdata
->netdev
,
168 "platform_get_irq %u failed\n",
173 channel
->dma_irq
= ret
;
176 if (i
< pdata
->tx_ring_count
) {
177 spin_lock_init(&tx_ring
->lock
);
178 channel
->tx_ring
= tx_ring
++;
181 if (i
< pdata
->rx_ring_count
) {
182 spin_lock_init(&rx_ring
->lock
);
183 channel
->rx_ring
= rx_ring
++;
186 netif_dbg(pdata
, drv
, pdata
->netdev
,
187 "%s: dma_regs=%p, dma_irq=%d, tx=%p, rx=%p\n",
188 channel
->name
, channel
->dma_regs
, channel
->dma_irq
,
189 channel
->tx_ring
, channel
->rx_ring
);
192 pdata
->channel
= channel_mem
;
193 pdata
->channel_count
= count
;
210 static void xgbe_free_channels(struct xgbe_prv_data
*pdata
)
215 kfree(pdata
->channel
->rx_ring
);
216 kfree(pdata
->channel
->tx_ring
);
217 kfree(pdata
->channel
);
219 pdata
->channel
= NULL
;
220 pdata
->channel_count
= 0;
223 static inline unsigned int xgbe_tx_avail_desc(struct xgbe_ring
*ring
)
225 return (ring
->rdesc_count
- (ring
->cur
- ring
->dirty
));
228 static inline unsigned int xgbe_rx_dirty_desc(struct xgbe_ring
*ring
)
230 return (ring
->cur
- ring
->dirty
);
233 static int xgbe_maybe_stop_tx_queue(struct xgbe_channel
*channel
,
234 struct xgbe_ring
*ring
, unsigned int count
)
236 struct xgbe_prv_data
*pdata
= channel
->pdata
;
238 if (count
> xgbe_tx_avail_desc(ring
)) {
239 netif_info(pdata
, drv
, pdata
->netdev
,
240 "Tx queue stopped, not enough descriptors available\n");
241 netif_stop_subqueue(pdata
->netdev
, channel
->queue_index
);
242 ring
->tx
.queue_stopped
= 1;
244 /* If we haven't notified the hardware because of xmit_more
245 * support, tell it now
247 if (ring
->tx
.xmit_more
)
248 pdata
->hw_if
.tx_start_xmit(channel
, ring
);
250 return NETDEV_TX_BUSY
;
256 static int xgbe_calc_rx_buf_size(struct net_device
*netdev
, unsigned int mtu
)
258 unsigned int rx_buf_size
;
260 if (mtu
> XGMAC_JUMBO_PACKET_MTU
) {
261 netdev_alert(netdev
, "MTU exceeds maximum supported value\n");
265 rx_buf_size
= mtu
+ ETH_HLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
;
266 rx_buf_size
= clamp_val(rx_buf_size
, XGBE_RX_MIN_BUF_SIZE
, PAGE_SIZE
);
268 rx_buf_size
= (rx_buf_size
+ XGBE_RX_BUF_ALIGN
- 1) &
269 ~(XGBE_RX_BUF_ALIGN
- 1);
274 static void xgbe_enable_rx_tx_ints(struct xgbe_prv_data
*pdata
)
276 struct xgbe_hw_if
*hw_if
= &pdata
->hw_if
;
277 struct xgbe_channel
*channel
;
278 enum xgbe_int int_id
;
281 channel
= pdata
->channel
;
282 for (i
= 0; i
< pdata
->channel_count
; i
++, channel
++) {
283 if (channel
->tx_ring
&& channel
->rx_ring
)
284 int_id
= XGMAC_INT_DMA_CH_SR_TI_RI
;
285 else if (channel
->tx_ring
)
286 int_id
= XGMAC_INT_DMA_CH_SR_TI
;
287 else if (channel
->rx_ring
)
288 int_id
= XGMAC_INT_DMA_CH_SR_RI
;
292 hw_if
->enable_int(channel
, int_id
);
296 static void xgbe_disable_rx_tx_ints(struct xgbe_prv_data
*pdata
)
298 struct xgbe_hw_if
*hw_if
= &pdata
->hw_if
;
299 struct xgbe_channel
*channel
;
300 enum xgbe_int int_id
;
303 channel
= pdata
->channel
;
304 for (i
= 0; i
< pdata
->channel_count
; i
++, channel
++) {
305 if (channel
->tx_ring
&& channel
->rx_ring
)
306 int_id
= XGMAC_INT_DMA_CH_SR_TI_RI
;
307 else if (channel
->tx_ring
)
308 int_id
= XGMAC_INT_DMA_CH_SR_TI
;
309 else if (channel
->rx_ring
)
310 int_id
= XGMAC_INT_DMA_CH_SR_RI
;
314 hw_if
->disable_int(channel
, int_id
);
318 static irqreturn_t
xgbe_isr(int irq
, void *data
)
320 struct xgbe_prv_data
*pdata
= data
;
321 struct xgbe_hw_if
*hw_if
= &pdata
->hw_if
;
322 struct xgbe_channel
*channel
;
323 unsigned int dma_isr
, dma_ch_isr
;
324 unsigned int mac_isr
, mac_tssr
;
327 /* The DMA interrupt status register also reports MAC and MTL
328 * interrupts. So for polling mode, we just need to check for
329 * this register to be non-zero
331 dma_isr
= XGMAC_IOREAD(pdata
, DMA_ISR
);
335 netif_dbg(pdata
, intr
, pdata
->netdev
, "DMA_ISR=%#010x\n", dma_isr
);
337 for (i
= 0; i
< pdata
->channel_count
; i
++) {
338 if (!(dma_isr
& (1 << i
)))
341 channel
= pdata
->channel
+ i
;
343 dma_ch_isr
= XGMAC_DMA_IOREAD(channel
, DMA_CH_SR
);
344 netif_dbg(pdata
, intr
, pdata
->netdev
, "DMA_CH%u_ISR=%#010x\n",
347 /* The TI or RI interrupt bits may still be set even if using
348 * per channel DMA interrupts. Check to be sure those are not
349 * enabled before using the private data napi structure.
351 if (!pdata
->per_channel_irq
&&
352 (XGMAC_GET_BITS(dma_ch_isr
, DMA_CH_SR
, TI
) ||
353 XGMAC_GET_BITS(dma_ch_isr
, DMA_CH_SR
, RI
))) {
354 if (napi_schedule_prep(&pdata
->napi
)) {
355 /* Disable Tx and Rx interrupts */
356 xgbe_disable_rx_tx_ints(pdata
);
358 /* Turn on polling */
359 __napi_schedule_irqoff(&pdata
->napi
);
363 if (XGMAC_GET_BITS(dma_ch_isr
, DMA_CH_SR
, RBU
))
364 pdata
->ext_stats
.rx_buffer_unavailable
++;
366 /* Restart the device on a Fatal Bus Error */
367 if (XGMAC_GET_BITS(dma_ch_isr
, DMA_CH_SR
, FBE
))
368 schedule_work(&pdata
->restart_work
);
370 /* Clear all interrupt signals */
371 XGMAC_DMA_IOWRITE(channel
, DMA_CH_SR
, dma_ch_isr
);
374 if (XGMAC_GET_BITS(dma_isr
, DMA_ISR
, MACIS
)) {
375 mac_isr
= XGMAC_IOREAD(pdata
, MAC_ISR
);
377 if (XGMAC_GET_BITS(mac_isr
, MAC_ISR
, MMCTXIS
))
378 hw_if
->tx_mmc_int(pdata
);
380 if (XGMAC_GET_BITS(mac_isr
, MAC_ISR
, MMCRXIS
))
381 hw_if
->rx_mmc_int(pdata
);
383 if (XGMAC_GET_BITS(mac_isr
, MAC_ISR
, TSIS
)) {
384 mac_tssr
= XGMAC_IOREAD(pdata
, MAC_TSSR
);
386 if (XGMAC_GET_BITS(mac_tssr
, MAC_TSSR
, TXTSC
)) {
387 /* Read Tx Timestamp to clear interrupt */
389 hw_if
->get_tx_tstamp(pdata
);
390 queue_work(pdata
->dev_workqueue
,
391 &pdata
->tx_tstamp_work
);
400 static irqreturn_t
xgbe_dma_isr(int irq
, void *data
)
402 struct xgbe_channel
*channel
= data
;
404 /* Per channel DMA interrupts are enabled, so we use the per
405 * channel napi structure and not the private data napi structure
407 if (napi_schedule_prep(&channel
->napi
)) {
408 /* Disable Tx and Rx interrupts */
409 disable_irq_nosync(channel
->dma_irq
);
411 /* Turn on polling */
412 __napi_schedule_irqoff(&channel
->napi
);
418 static void xgbe_tx_timer(unsigned long data
)
420 struct xgbe_channel
*channel
= (struct xgbe_channel
*)data
;
421 struct xgbe_prv_data
*pdata
= channel
->pdata
;
422 struct napi_struct
*napi
;
424 DBGPR("-->xgbe_tx_timer\n");
426 napi
= (pdata
->per_channel_irq
) ? &channel
->napi
: &pdata
->napi
;
428 if (napi_schedule_prep(napi
)) {
429 /* Disable Tx and Rx interrupts */
430 if (pdata
->per_channel_irq
)
431 disable_irq_nosync(channel
->dma_irq
);
433 xgbe_disable_rx_tx_ints(pdata
);
435 /* Turn on polling */
436 __napi_schedule(napi
);
439 channel
->tx_timer_active
= 0;
441 DBGPR("<--xgbe_tx_timer\n");
444 static void xgbe_service(struct work_struct
*work
)
446 struct xgbe_prv_data
*pdata
= container_of(work
,
447 struct xgbe_prv_data
,
450 pdata
->phy_if
.phy_status(pdata
);
453 static void xgbe_service_timer(unsigned long data
)
455 struct xgbe_prv_data
*pdata
= (struct xgbe_prv_data
*)data
;
457 queue_work(pdata
->dev_workqueue
, &pdata
->service_work
);
459 mod_timer(&pdata
->service_timer
, jiffies
+ HZ
);
462 static void xgbe_init_timers(struct xgbe_prv_data
*pdata
)
464 struct xgbe_channel
*channel
;
467 setup_timer(&pdata
->service_timer
, xgbe_service_timer
,
468 (unsigned long)pdata
);
470 channel
= pdata
->channel
;
471 for (i
= 0; i
< pdata
->channel_count
; i
++, channel
++) {
472 if (!channel
->tx_ring
)
475 setup_timer(&channel
->tx_timer
, xgbe_tx_timer
,
476 (unsigned long)channel
);
480 static void xgbe_start_timers(struct xgbe_prv_data
*pdata
)
482 mod_timer(&pdata
->service_timer
, jiffies
+ HZ
);
485 static void xgbe_stop_timers(struct xgbe_prv_data
*pdata
)
487 struct xgbe_channel
*channel
;
490 del_timer_sync(&pdata
->service_timer
);
492 channel
= pdata
->channel
;
493 for (i
= 0; i
< pdata
->channel_count
; i
++, channel
++) {
494 if (!channel
->tx_ring
)
497 del_timer_sync(&channel
->tx_timer
);
501 void xgbe_get_all_hw_features(struct xgbe_prv_data
*pdata
)
503 unsigned int mac_hfr0
, mac_hfr1
, mac_hfr2
;
504 struct xgbe_hw_features
*hw_feat
= &pdata
->hw_feat
;
506 DBGPR("-->xgbe_get_all_hw_features\n");
508 mac_hfr0
= XGMAC_IOREAD(pdata
, MAC_HWF0R
);
509 mac_hfr1
= XGMAC_IOREAD(pdata
, MAC_HWF1R
);
510 mac_hfr2
= XGMAC_IOREAD(pdata
, MAC_HWF2R
);
512 memset(hw_feat
, 0, sizeof(*hw_feat
));
514 hw_feat
->version
= XGMAC_IOREAD(pdata
, MAC_VR
);
516 /* Hardware feature register 0 */
517 hw_feat
->gmii
= XGMAC_GET_BITS(mac_hfr0
, MAC_HWF0R
, GMIISEL
);
518 hw_feat
->vlhash
= XGMAC_GET_BITS(mac_hfr0
, MAC_HWF0R
, VLHASH
);
519 hw_feat
->sma
= XGMAC_GET_BITS(mac_hfr0
, MAC_HWF0R
, SMASEL
);
520 hw_feat
->rwk
= XGMAC_GET_BITS(mac_hfr0
, MAC_HWF0R
, RWKSEL
);
521 hw_feat
->mgk
= XGMAC_GET_BITS(mac_hfr0
, MAC_HWF0R
, MGKSEL
);
522 hw_feat
->mmc
= XGMAC_GET_BITS(mac_hfr0
, MAC_HWF0R
, MMCSEL
);
523 hw_feat
->aoe
= XGMAC_GET_BITS(mac_hfr0
, MAC_HWF0R
, ARPOFFSEL
);
524 hw_feat
->ts
= XGMAC_GET_BITS(mac_hfr0
, MAC_HWF0R
, TSSEL
);
525 hw_feat
->eee
= XGMAC_GET_BITS(mac_hfr0
, MAC_HWF0R
, EEESEL
);
526 hw_feat
->tx_coe
= XGMAC_GET_BITS(mac_hfr0
, MAC_HWF0R
, TXCOESEL
);
527 hw_feat
->rx_coe
= XGMAC_GET_BITS(mac_hfr0
, MAC_HWF0R
, RXCOESEL
);
528 hw_feat
->addn_mac
= XGMAC_GET_BITS(mac_hfr0
, MAC_HWF0R
,
530 hw_feat
->ts_src
= XGMAC_GET_BITS(mac_hfr0
, MAC_HWF0R
, TSSTSSEL
);
531 hw_feat
->sa_vlan_ins
= XGMAC_GET_BITS(mac_hfr0
, MAC_HWF0R
, SAVLANINS
);
533 /* Hardware feature register 1 */
534 hw_feat
->rx_fifo_size
= XGMAC_GET_BITS(mac_hfr1
, MAC_HWF1R
,
536 hw_feat
->tx_fifo_size
= XGMAC_GET_BITS(mac_hfr1
, MAC_HWF1R
,
538 hw_feat
->adv_ts_hi
= XGMAC_GET_BITS(mac_hfr1
, MAC_HWF1R
, ADVTHWORD
);
539 hw_feat
->dma_width
= XGMAC_GET_BITS(mac_hfr1
, MAC_HWF1R
, ADDR64
);
540 hw_feat
->dcb
= XGMAC_GET_BITS(mac_hfr1
, MAC_HWF1R
, DCBEN
);
541 hw_feat
->sph
= XGMAC_GET_BITS(mac_hfr1
, MAC_HWF1R
, SPHEN
);
542 hw_feat
->tso
= XGMAC_GET_BITS(mac_hfr1
, MAC_HWF1R
, TSOEN
);
543 hw_feat
->dma_debug
= XGMAC_GET_BITS(mac_hfr1
, MAC_HWF1R
, DBGMEMA
);
544 hw_feat
->rss
= XGMAC_GET_BITS(mac_hfr1
, MAC_HWF1R
, RSSEN
);
545 hw_feat
->tc_cnt
= XGMAC_GET_BITS(mac_hfr1
, MAC_HWF1R
, NUMTC
);
546 hw_feat
->hash_table_size
= XGMAC_GET_BITS(mac_hfr1
, MAC_HWF1R
,
548 hw_feat
->l3l4_filter_num
= XGMAC_GET_BITS(mac_hfr1
, MAC_HWF1R
,
551 /* Hardware feature register 2 */
552 hw_feat
->rx_q_cnt
= XGMAC_GET_BITS(mac_hfr2
, MAC_HWF2R
, RXQCNT
);
553 hw_feat
->tx_q_cnt
= XGMAC_GET_BITS(mac_hfr2
, MAC_HWF2R
, TXQCNT
);
554 hw_feat
->rx_ch_cnt
= XGMAC_GET_BITS(mac_hfr2
, MAC_HWF2R
, RXCHCNT
);
555 hw_feat
->tx_ch_cnt
= XGMAC_GET_BITS(mac_hfr2
, MAC_HWF2R
, TXCHCNT
);
556 hw_feat
->pps_out_num
= XGMAC_GET_BITS(mac_hfr2
, MAC_HWF2R
, PPSOUTNUM
);
557 hw_feat
->aux_snap_num
= XGMAC_GET_BITS(mac_hfr2
, MAC_HWF2R
, AUXSNAPNUM
);
559 /* Translate the Hash Table size into actual number */
560 switch (hw_feat
->hash_table_size
) {
564 hw_feat
->hash_table_size
= 64;
567 hw_feat
->hash_table_size
= 128;
570 hw_feat
->hash_table_size
= 256;
574 /* Translate the address width setting into actual number */
575 switch (hw_feat
->dma_width
) {
577 hw_feat
->dma_width
= 32;
580 hw_feat
->dma_width
= 40;
583 hw_feat
->dma_width
= 48;
586 hw_feat
->dma_width
= 32;
589 /* The Queue, Channel and TC counts are zero based so increment them
590 * to get the actual number
594 hw_feat
->rx_ch_cnt
++;
595 hw_feat
->tx_ch_cnt
++;
598 DBGPR("<--xgbe_get_all_hw_features\n");
601 static void xgbe_napi_enable(struct xgbe_prv_data
*pdata
, unsigned int add
)
603 struct xgbe_channel
*channel
;
606 if (pdata
->per_channel_irq
) {
607 channel
= pdata
->channel
;
608 for (i
= 0; i
< pdata
->channel_count
; i
++, channel
++) {
610 netif_napi_add(pdata
->netdev
, &channel
->napi
,
611 xgbe_one_poll
, NAPI_POLL_WEIGHT
);
613 napi_enable(&channel
->napi
);
617 netif_napi_add(pdata
->netdev
, &pdata
->napi
,
618 xgbe_all_poll
, NAPI_POLL_WEIGHT
);
620 napi_enable(&pdata
->napi
);
624 static void xgbe_napi_disable(struct xgbe_prv_data
*pdata
, unsigned int del
)
626 struct xgbe_channel
*channel
;
629 if (pdata
->per_channel_irq
) {
630 channel
= pdata
->channel
;
631 for (i
= 0; i
< pdata
->channel_count
; i
++, channel
++) {
632 napi_disable(&channel
->napi
);
635 netif_napi_del(&channel
->napi
);
638 napi_disable(&pdata
->napi
);
641 netif_napi_del(&pdata
->napi
);
645 static int xgbe_request_irqs(struct xgbe_prv_data
*pdata
)
647 struct xgbe_channel
*channel
;
648 struct net_device
*netdev
= pdata
->netdev
;
652 ret
= devm_request_irq(pdata
->dev
, pdata
->dev_irq
, xgbe_isr
, 0,
653 netdev
->name
, pdata
);
655 netdev_alert(netdev
, "error requesting irq %d\n",
660 if (!pdata
->per_channel_irq
)
663 channel
= pdata
->channel
;
664 for (i
= 0; i
< pdata
->channel_count
; i
++, channel
++) {
665 snprintf(channel
->dma_irq_name
,
666 sizeof(channel
->dma_irq_name
) - 1,
667 "%s-TxRx-%u", netdev_name(netdev
),
668 channel
->queue_index
);
670 ret
= devm_request_irq(pdata
->dev
, channel
->dma_irq
,
672 channel
->dma_irq_name
, channel
);
674 netdev_alert(netdev
, "error requesting irq %d\n",
683 /* Using an unsigned int, 'i' will go to UINT_MAX and exit */
684 for (i
--, channel
--; i
< pdata
->channel_count
; i
--, channel
--)
685 devm_free_irq(pdata
->dev
, channel
->dma_irq
, channel
);
687 devm_free_irq(pdata
->dev
, pdata
->dev_irq
, pdata
);
692 static void xgbe_free_irqs(struct xgbe_prv_data
*pdata
)
694 struct xgbe_channel
*channel
;
697 devm_free_irq(pdata
->dev
, pdata
->dev_irq
, pdata
);
699 if (!pdata
->per_channel_irq
)
702 channel
= pdata
->channel
;
703 for (i
= 0; i
< pdata
->channel_count
; i
++, channel
++)
704 devm_free_irq(pdata
->dev
, channel
->dma_irq
, channel
);
707 void xgbe_init_tx_coalesce(struct xgbe_prv_data
*pdata
)
709 struct xgbe_hw_if
*hw_if
= &pdata
->hw_if
;
711 DBGPR("-->xgbe_init_tx_coalesce\n");
713 pdata
->tx_usecs
= XGMAC_INIT_DMA_TX_USECS
;
714 pdata
->tx_frames
= XGMAC_INIT_DMA_TX_FRAMES
;
716 hw_if
->config_tx_coalesce(pdata
);
718 DBGPR("<--xgbe_init_tx_coalesce\n");
721 void xgbe_init_rx_coalesce(struct xgbe_prv_data
*pdata
)
723 struct xgbe_hw_if
*hw_if
= &pdata
->hw_if
;
725 DBGPR("-->xgbe_init_rx_coalesce\n");
727 pdata
->rx_riwt
= hw_if
->usec_to_riwt(pdata
, XGMAC_INIT_DMA_RX_USECS
);
728 pdata
->rx_usecs
= XGMAC_INIT_DMA_RX_USECS
;
729 pdata
->rx_frames
= XGMAC_INIT_DMA_RX_FRAMES
;
731 hw_if
->config_rx_coalesce(pdata
);
733 DBGPR("<--xgbe_init_rx_coalesce\n");
736 static void xgbe_free_tx_data(struct xgbe_prv_data
*pdata
)
738 struct xgbe_desc_if
*desc_if
= &pdata
->desc_if
;
739 struct xgbe_channel
*channel
;
740 struct xgbe_ring
*ring
;
741 struct xgbe_ring_data
*rdata
;
744 DBGPR("-->xgbe_free_tx_data\n");
746 channel
= pdata
->channel
;
747 for (i
= 0; i
< pdata
->channel_count
; i
++, channel
++) {
748 ring
= channel
->tx_ring
;
752 for (j
= 0; j
< ring
->rdesc_count
; j
++) {
753 rdata
= XGBE_GET_DESC_DATA(ring
, j
);
754 desc_if
->unmap_rdata(pdata
, rdata
);
758 DBGPR("<--xgbe_free_tx_data\n");
761 static void xgbe_free_rx_data(struct xgbe_prv_data
*pdata
)
763 struct xgbe_desc_if
*desc_if
= &pdata
->desc_if
;
764 struct xgbe_channel
*channel
;
765 struct xgbe_ring
*ring
;
766 struct xgbe_ring_data
*rdata
;
769 DBGPR("-->xgbe_free_rx_data\n");
771 channel
= pdata
->channel
;
772 for (i
= 0; i
< pdata
->channel_count
; i
++, channel
++) {
773 ring
= channel
->rx_ring
;
777 for (j
= 0; j
< ring
->rdesc_count
; j
++) {
778 rdata
= XGBE_GET_DESC_DATA(ring
, j
);
779 desc_if
->unmap_rdata(pdata
, rdata
);
783 DBGPR("<--xgbe_free_rx_data\n");
786 static int xgbe_phy_init(struct xgbe_prv_data
*pdata
)
788 pdata
->phy_link
= -1;
789 pdata
->phy_speed
= SPEED_UNKNOWN
;
791 return pdata
->phy_if
.phy_reset(pdata
);
794 int xgbe_powerdown(struct net_device
*netdev
, unsigned int caller
)
796 struct xgbe_prv_data
*pdata
= netdev_priv(netdev
);
797 struct xgbe_hw_if
*hw_if
= &pdata
->hw_if
;
800 DBGPR("-->xgbe_powerdown\n");
802 if (!netif_running(netdev
) ||
803 (caller
== XGMAC_IOCTL_CONTEXT
&& pdata
->power_down
)) {
804 netdev_alert(netdev
, "Device is already powered down\n");
805 DBGPR("<--xgbe_powerdown\n");
809 spin_lock_irqsave(&pdata
->lock
, flags
);
811 if (caller
== XGMAC_DRIVER_CONTEXT
)
812 netif_device_detach(netdev
);
814 netif_tx_stop_all_queues(netdev
);
816 xgbe_stop_timers(pdata
);
817 flush_workqueue(pdata
->dev_workqueue
);
819 hw_if
->powerdown_tx(pdata
);
820 hw_if
->powerdown_rx(pdata
);
822 xgbe_napi_disable(pdata
, 0);
824 pdata
->power_down
= 1;
826 spin_unlock_irqrestore(&pdata
->lock
, flags
);
828 DBGPR("<--xgbe_powerdown\n");
833 int xgbe_powerup(struct net_device
*netdev
, unsigned int caller
)
835 struct xgbe_prv_data
*pdata
= netdev_priv(netdev
);
836 struct xgbe_hw_if
*hw_if
= &pdata
->hw_if
;
839 DBGPR("-->xgbe_powerup\n");
841 if (!netif_running(netdev
) ||
842 (caller
== XGMAC_IOCTL_CONTEXT
&& !pdata
->power_down
)) {
843 netdev_alert(netdev
, "Device is already powered up\n");
844 DBGPR("<--xgbe_powerup\n");
848 spin_lock_irqsave(&pdata
->lock
, flags
);
850 pdata
->power_down
= 0;
852 xgbe_napi_enable(pdata
, 0);
854 hw_if
->powerup_tx(pdata
);
855 hw_if
->powerup_rx(pdata
);
857 if (caller
== XGMAC_DRIVER_CONTEXT
)
858 netif_device_attach(netdev
);
860 netif_tx_start_all_queues(netdev
);
862 xgbe_start_timers(pdata
);
864 spin_unlock_irqrestore(&pdata
->lock
, flags
);
866 DBGPR("<--xgbe_powerup\n");
871 static int xgbe_start(struct xgbe_prv_data
*pdata
)
873 struct xgbe_hw_if
*hw_if
= &pdata
->hw_if
;
874 struct xgbe_phy_if
*phy_if
= &pdata
->phy_if
;
875 struct net_device
*netdev
= pdata
->netdev
;
878 DBGPR("-->xgbe_start\n");
882 ret
= phy_if
->phy_start(pdata
);
886 xgbe_napi_enable(pdata
, 1);
888 ret
= xgbe_request_irqs(pdata
);
892 hw_if
->enable_tx(pdata
);
893 hw_if
->enable_rx(pdata
);
895 netif_tx_start_all_queues(netdev
);
897 xgbe_start_timers(pdata
);
898 queue_work(pdata
->dev_workqueue
, &pdata
->service_work
);
900 DBGPR("<--xgbe_start\n");
905 xgbe_napi_disable(pdata
, 1);
907 phy_if
->phy_stop(pdata
);
915 static void xgbe_stop(struct xgbe_prv_data
*pdata
)
917 struct xgbe_hw_if
*hw_if
= &pdata
->hw_if
;
918 struct xgbe_phy_if
*phy_if
= &pdata
->phy_if
;
919 struct xgbe_channel
*channel
;
920 struct net_device
*netdev
= pdata
->netdev
;
921 struct netdev_queue
*txq
;
924 DBGPR("-->xgbe_stop\n");
926 netif_tx_stop_all_queues(netdev
);
928 xgbe_stop_timers(pdata
);
929 flush_workqueue(pdata
->dev_workqueue
);
931 hw_if
->disable_tx(pdata
);
932 hw_if
->disable_rx(pdata
);
934 xgbe_free_irqs(pdata
);
936 xgbe_napi_disable(pdata
, 1);
938 phy_if
->phy_stop(pdata
);
942 channel
= pdata
->channel
;
943 for (i
= 0; i
< pdata
->channel_count
; i
++, channel
++) {
944 if (!channel
->tx_ring
)
947 txq
= netdev_get_tx_queue(netdev
, channel
->queue_index
);
948 netdev_tx_reset_queue(txq
);
951 DBGPR("<--xgbe_stop\n");
954 static void xgbe_restart_dev(struct xgbe_prv_data
*pdata
)
956 DBGPR("-->xgbe_restart_dev\n");
958 /* If not running, "restart" will happen on open */
959 if (!netif_running(pdata
->netdev
))
964 xgbe_free_tx_data(pdata
);
965 xgbe_free_rx_data(pdata
);
969 DBGPR("<--xgbe_restart_dev\n");
972 static void xgbe_restart(struct work_struct
*work
)
974 struct xgbe_prv_data
*pdata
= container_of(work
,
975 struct xgbe_prv_data
,
980 xgbe_restart_dev(pdata
);
985 static void xgbe_tx_tstamp(struct work_struct
*work
)
987 struct xgbe_prv_data
*pdata
= container_of(work
,
988 struct xgbe_prv_data
,
990 struct skb_shared_hwtstamps hwtstamps
;
994 if (pdata
->tx_tstamp
) {
995 nsec
= timecounter_cyc2time(&pdata
->tstamp_tc
,
998 memset(&hwtstamps
, 0, sizeof(hwtstamps
));
999 hwtstamps
.hwtstamp
= ns_to_ktime(nsec
);
1000 skb_tstamp_tx(pdata
->tx_tstamp_skb
, &hwtstamps
);
1003 dev_kfree_skb_any(pdata
->tx_tstamp_skb
);
1005 spin_lock_irqsave(&pdata
->tstamp_lock
, flags
);
1006 pdata
->tx_tstamp_skb
= NULL
;
1007 spin_unlock_irqrestore(&pdata
->tstamp_lock
, flags
);
1010 static int xgbe_get_hwtstamp_settings(struct xgbe_prv_data
*pdata
,
1011 struct ifreq
*ifreq
)
1013 if (copy_to_user(ifreq
->ifr_data
, &pdata
->tstamp_config
,
1014 sizeof(pdata
->tstamp_config
)))
1020 static int xgbe_set_hwtstamp_settings(struct xgbe_prv_data
*pdata
,
1021 struct ifreq
*ifreq
)
1023 struct hwtstamp_config config
;
1024 unsigned int mac_tscr
;
1026 if (copy_from_user(&config
, ifreq
->ifr_data
, sizeof(config
)))
1034 switch (config
.tx_type
) {
1035 case HWTSTAMP_TX_OFF
:
1038 case HWTSTAMP_TX_ON
:
1039 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSENA
, 1);
1046 switch (config
.rx_filter
) {
1047 case HWTSTAMP_FILTER_NONE
:
1050 case HWTSTAMP_FILTER_ALL
:
1051 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSENALL
, 1);
1052 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSENA
, 1);
1055 /* PTP v2, UDP, any kind of event packet */
1056 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT
:
1057 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSVER2ENA
, 1);
1058 /* PTP v1, UDP, any kind of event packet */
1059 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT
:
1060 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSIPV4ENA
, 1);
1061 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSIPV6ENA
, 1);
1062 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, SNAPTYPSEL
, 1);
1063 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSENA
, 1);
1066 /* PTP v2, UDP, Sync packet */
1067 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC
:
1068 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSVER2ENA
, 1);
1069 /* PTP v1, UDP, Sync packet */
1070 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC
:
1071 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSIPV4ENA
, 1);
1072 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSIPV6ENA
, 1);
1073 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSEVNTENA
, 1);
1074 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSENA
, 1);
1077 /* PTP v2, UDP, Delay_req packet */
1078 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ
:
1079 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSVER2ENA
, 1);
1080 /* PTP v1, UDP, Delay_req packet */
1081 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ
:
1082 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSIPV4ENA
, 1);
1083 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSIPV6ENA
, 1);
1084 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSEVNTENA
, 1);
1085 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSMSTRENA
, 1);
1086 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSENA
, 1);
1089 /* 802.AS1, Ethernet, any kind of event packet */
1090 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT
:
1091 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, AV8021ASMEN
, 1);
1092 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, SNAPTYPSEL
, 1);
1093 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSENA
, 1);
1096 /* 802.AS1, Ethernet, Sync packet */
1097 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC
:
1098 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, AV8021ASMEN
, 1);
1099 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSEVNTENA
, 1);
1100 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSENA
, 1);
1103 /* 802.AS1, Ethernet, Delay_req packet */
1104 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ
:
1105 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, AV8021ASMEN
, 1);
1106 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSMSTRENA
, 1);
1107 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSEVNTENA
, 1);
1108 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSENA
, 1);
1111 /* PTP v2/802.AS1, any layer, any kind of event packet */
1112 case HWTSTAMP_FILTER_PTP_V2_EVENT
:
1113 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSVER2ENA
, 1);
1114 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSIPENA
, 1);
1115 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSIPV4ENA
, 1);
1116 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSIPV6ENA
, 1);
1117 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, SNAPTYPSEL
, 1);
1118 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSENA
, 1);
1121 /* PTP v2/802.AS1, any layer, Sync packet */
1122 case HWTSTAMP_FILTER_PTP_V2_SYNC
:
1123 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSVER2ENA
, 1);
1124 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSIPENA
, 1);
1125 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSIPV4ENA
, 1);
1126 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSIPV6ENA
, 1);
1127 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSEVNTENA
, 1);
1128 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSENA
, 1);
1131 /* PTP v2/802.AS1, any layer, Delay_req packet */
1132 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ
:
1133 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSVER2ENA
, 1);
1134 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSIPENA
, 1);
1135 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSIPV4ENA
, 1);
1136 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSIPV6ENA
, 1);
1137 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSMSTRENA
, 1);
1138 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSEVNTENA
, 1);
1139 XGMAC_SET_BITS(mac_tscr
, MAC_TSCR
, TSENA
, 1);
1146 pdata
->hw_if
.config_tstamp(pdata
, mac_tscr
);
1148 memcpy(&pdata
->tstamp_config
, &config
, sizeof(config
));
1153 static void xgbe_prep_tx_tstamp(struct xgbe_prv_data
*pdata
,
1154 struct sk_buff
*skb
,
1155 struct xgbe_packet_data
*packet
)
1157 unsigned long flags
;
1159 if (XGMAC_GET_BITS(packet
->attributes
, TX_PACKET_ATTRIBUTES
, PTP
)) {
1160 spin_lock_irqsave(&pdata
->tstamp_lock
, flags
);
1161 if (pdata
->tx_tstamp_skb
) {
1162 /* Another timestamp in progress, ignore this one */
1163 XGMAC_SET_BITS(packet
->attributes
,
1164 TX_PACKET_ATTRIBUTES
, PTP
, 0);
1166 pdata
->tx_tstamp_skb
= skb_get(skb
);
1167 skb_shinfo(skb
)->tx_flags
|= SKBTX_IN_PROGRESS
;
1169 spin_unlock_irqrestore(&pdata
->tstamp_lock
, flags
);
1172 if (!XGMAC_GET_BITS(packet
->attributes
, TX_PACKET_ATTRIBUTES
, PTP
))
1173 skb_tx_timestamp(skb
);
1176 static void xgbe_prep_vlan(struct sk_buff
*skb
, struct xgbe_packet_data
*packet
)
1178 if (skb_vlan_tag_present(skb
))
1179 packet
->vlan_ctag
= skb_vlan_tag_get(skb
);
1182 static int xgbe_prep_tso(struct sk_buff
*skb
, struct xgbe_packet_data
*packet
)
1186 if (!XGMAC_GET_BITS(packet
->attributes
, TX_PACKET_ATTRIBUTES
,
1190 ret
= skb_cow_head(skb
, 0);
1194 packet
->header_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
1195 packet
->tcp_header_len
= tcp_hdrlen(skb
);
1196 packet
->tcp_payload_len
= skb
->len
- packet
->header_len
;
1197 packet
->mss
= skb_shinfo(skb
)->gso_size
;
1198 DBGPR(" packet->header_len=%u\n", packet
->header_len
);
1199 DBGPR(" packet->tcp_header_len=%u, packet->tcp_payload_len=%u\n",
1200 packet
->tcp_header_len
, packet
->tcp_payload_len
);
1201 DBGPR(" packet->mss=%u\n", packet
->mss
);
1203 /* Update the number of packets that will ultimately be transmitted
1204 * along with the extra bytes for each extra packet
1206 packet
->tx_packets
= skb_shinfo(skb
)->gso_segs
;
1207 packet
->tx_bytes
+= (packet
->tx_packets
- 1) * packet
->header_len
;
1212 static int xgbe_is_tso(struct sk_buff
*skb
)
1214 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
1217 if (!skb_is_gso(skb
))
1220 DBGPR(" TSO packet to be processed\n");
1225 static void xgbe_packet_info(struct xgbe_prv_data
*pdata
,
1226 struct xgbe_ring
*ring
, struct sk_buff
*skb
,
1227 struct xgbe_packet_data
*packet
)
1229 struct skb_frag_struct
*frag
;
1230 unsigned int context_desc
;
1237 packet
->rdesc_count
= 0;
1239 packet
->tx_packets
= 1;
1240 packet
->tx_bytes
= skb
->len
;
1242 if (xgbe_is_tso(skb
)) {
1243 /* TSO requires an extra descriptor if mss is different */
1244 if (skb_shinfo(skb
)->gso_size
!= ring
->tx
.cur_mss
) {
1246 packet
->rdesc_count
++;
1249 /* TSO requires an extra descriptor for TSO header */
1250 packet
->rdesc_count
++;
1252 XGMAC_SET_BITS(packet
->attributes
, TX_PACKET_ATTRIBUTES
,
1254 XGMAC_SET_BITS(packet
->attributes
, TX_PACKET_ATTRIBUTES
,
1256 } else if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
1257 XGMAC_SET_BITS(packet
->attributes
, TX_PACKET_ATTRIBUTES
,
1260 if (skb_vlan_tag_present(skb
)) {
1261 /* VLAN requires an extra descriptor if tag is different */
1262 if (skb_vlan_tag_get(skb
) != ring
->tx
.cur_vlan_ctag
)
1263 /* We can share with the TSO context descriptor */
1264 if (!context_desc
) {
1266 packet
->rdesc_count
++;
1269 XGMAC_SET_BITS(packet
->attributes
, TX_PACKET_ATTRIBUTES
,
1273 if ((skb_shinfo(skb
)->tx_flags
& SKBTX_HW_TSTAMP
) &&
1274 (pdata
->tstamp_config
.tx_type
== HWTSTAMP_TX_ON
))
1275 XGMAC_SET_BITS(packet
->attributes
, TX_PACKET_ATTRIBUTES
,
1278 for (len
= skb_headlen(skb
); len
;) {
1279 packet
->rdesc_count
++;
1280 len
-= min_t(unsigned int, len
, XGBE_TX_MAX_BUF_SIZE
);
1283 for (i
= 0; i
< skb_shinfo(skb
)->nr_frags
; i
++) {
1284 frag
= &skb_shinfo(skb
)->frags
[i
];
1285 for (len
= skb_frag_size(frag
); len
; ) {
1286 packet
->rdesc_count
++;
1287 len
-= min_t(unsigned int, len
, XGBE_TX_MAX_BUF_SIZE
);
1292 static int xgbe_open(struct net_device
*netdev
)
1294 struct xgbe_prv_data
*pdata
= netdev_priv(netdev
);
1295 struct xgbe_desc_if
*desc_if
= &pdata
->desc_if
;
1298 DBGPR("-->xgbe_open\n");
1300 /* Initialize the phy */
1301 ret
= xgbe_phy_init(pdata
);
1305 /* Enable the clocks */
1306 ret
= clk_prepare_enable(pdata
->sysclk
);
1308 netdev_alert(netdev
, "dma clk_prepare_enable failed\n");
1312 ret
= clk_prepare_enable(pdata
->ptpclk
);
1314 netdev_alert(netdev
, "ptp clk_prepare_enable failed\n");
1318 /* Calculate the Rx buffer size before allocating rings */
1319 ret
= xgbe_calc_rx_buf_size(netdev
, netdev
->mtu
);
1322 pdata
->rx_buf_size
= ret
;
1324 /* Allocate the channel and ring structures */
1325 ret
= xgbe_alloc_channels(pdata
);
1329 /* Allocate the ring descriptors and buffers */
1330 ret
= desc_if
->alloc_ring_resources(pdata
);
1334 INIT_WORK(&pdata
->service_work
, xgbe_service
);
1335 INIT_WORK(&pdata
->restart_work
, xgbe_restart
);
1336 INIT_WORK(&pdata
->tx_tstamp_work
, xgbe_tx_tstamp
);
1337 xgbe_init_timers(pdata
);
1339 ret
= xgbe_start(pdata
);
1343 clear_bit(XGBE_DOWN
, &pdata
->dev_state
);
1345 DBGPR("<--xgbe_open\n");
1350 desc_if
->free_ring_resources(pdata
);
1353 xgbe_free_channels(pdata
);
1356 clk_disable_unprepare(pdata
->ptpclk
);
1359 clk_disable_unprepare(pdata
->sysclk
);
1364 static int xgbe_close(struct net_device
*netdev
)
1366 struct xgbe_prv_data
*pdata
= netdev_priv(netdev
);
1367 struct xgbe_desc_if
*desc_if
= &pdata
->desc_if
;
1369 DBGPR("-->xgbe_close\n");
1371 /* Stop the device */
1374 /* Free the ring descriptors and buffers */
1375 desc_if
->free_ring_resources(pdata
);
1377 /* Free the channel and ring structures */
1378 xgbe_free_channels(pdata
);
1380 /* Disable the clocks */
1381 clk_disable_unprepare(pdata
->ptpclk
);
1382 clk_disable_unprepare(pdata
->sysclk
);
1384 set_bit(XGBE_DOWN
, &pdata
->dev_state
);
1386 DBGPR("<--xgbe_close\n");
1391 static int xgbe_xmit(struct sk_buff
*skb
, struct net_device
*netdev
)
1393 struct xgbe_prv_data
*pdata
= netdev_priv(netdev
);
1394 struct xgbe_hw_if
*hw_if
= &pdata
->hw_if
;
1395 struct xgbe_desc_if
*desc_if
= &pdata
->desc_if
;
1396 struct xgbe_channel
*channel
;
1397 struct xgbe_ring
*ring
;
1398 struct xgbe_packet_data
*packet
;
1399 struct netdev_queue
*txq
;
1402 DBGPR("-->xgbe_xmit: skb->len = %d\n", skb
->len
);
1404 channel
= pdata
->channel
+ skb
->queue_mapping
;
1405 txq
= netdev_get_tx_queue(netdev
, channel
->queue_index
);
1406 ring
= channel
->tx_ring
;
1407 packet
= &ring
->packet_data
;
1411 if (skb
->len
== 0) {
1412 netif_err(pdata
, tx_err
, netdev
,
1413 "empty skb received from stack\n");
1414 dev_kfree_skb_any(skb
);
1415 goto tx_netdev_return
;
1418 /* Calculate preliminary packet info */
1419 memset(packet
, 0, sizeof(*packet
));
1420 xgbe_packet_info(pdata
, ring
, skb
, packet
);
1422 /* Check that there are enough descriptors available */
1423 ret
= xgbe_maybe_stop_tx_queue(channel
, ring
, packet
->rdesc_count
);
1425 goto tx_netdev_return
;
1427 ret
= xgbe_prep_tso(skb
, packet
);
1429 netif_err(pdata
, tx_err
, netdev
,
1430 "error processing TSO packet\n");
1431 dev_kfree_skb_any(skb
);
1432 goto tx_netdev_return
;
1434 xgbe_prep_vlan(skb
, packet
);
1436 if (!desc_if
->map_tx_skb(channel
, skb
)) {
1437 dev_kfree_skb_any(skb
);
1438 goto tx_netdev_return
;
1441 xgbe_prep_tx_tstamp(pdata
, skb
, packet
);
1443 /* Report on the actual number of bytes (to be) sent */
1444 netdev_tx_sent_queue(txq
, packet
->tx_bytes
);
1446 /* Configure required descriptor fields for transmission */
1447 hw_if
->dev_xmit(channel
);
1449 if (netif_msg_pktdata(pdata
))
1450 xgbe_print_pkt(netdev
, skb
, true);
1452 /* Stop the queue in advance if there may not be enough descriptors */
1453 xgbe_maybe_stop_tx_queue(channel
, ring
, XGBE_TX_MAX_DESCS
);
1461 static void xgbe_set_rx_mode(struct net_device
*netdev
)
1463 struct xgbe_prv_data
*pdata
= netdev_priv(netdev
);
1464 struct xgbe_hw_if
*hw_if
= &pdata
->hw_if
;
1466 DBGPR("-->xgbe_set_rx_mode\n");
1468 hw_if
->config_rx_mode(pdata
);
1470 DBGPR("<--xgbe_set_rx_mode\n");
1473 static int xgbe_set_mac_address(struct net_device
*netdev
, void *addr
)
1475 struct xgbe_prv_data
*pdata
= netdev_priv(netdev
);
1476 struct xgbe_hw_if
*hw_if
= &pdata
->hw_if
;
1477 struct sockaddr
*saddr
= addr
;
1479 DBGPR("-->xgbe_set_mac_address\n");
1481 if (!is_valid_ether_addr(saddr
->sa_data
))
1482 return -EADDRNOTAVAIL
;
1484 memcpy(netdev
->dev_addr
, saddr
->sa_data
, netdev
->addr_len
);
1486 hw_if
->set_mac_address(pdata
, netdev
->dev_addr
);
1488 DBGPR("<--xgbe_set_mac_address\n");
1493 static int xgbe_ioctl(struct net_device
*netdev
, struct ifreq
*ifreq
, int cmd
)
1495 struct xgbe_prv_data
*pdata
= netdev_priv(netdev
);
1500 ret
= xgbe_get_hwtstamp_settings(pdata
, ifreq
);
1504 ret
= xgbe_set_hwtstamp_settings(pdata
, ifreq
);
1514 static int xgbe_change_mtu(struct net_device
*netdev
, int mtu
)
1516 struct xgbe_prv_data
*pdata
= netdev_priv(netdev
);
1519 DBGPR("-->xgbe_change_mtu\n");
1521 ret
= xgbe_calc_rx_buf_size(netdev
, mtu
);
1525 pdata
->rx_buf_size
= ret
;
1528 xgbe_restart_dev(pdata
);
1530 DBGPR("<--xgbe_change_mtu\n");
1535 static void xgbe_tx_timeout(struct net_device
*netdev
)
1537 struct xgbe_prv_data
*pdata
= netdev_priv(netdev
);
1539 netdev_warn(netdev
, "tx timeout, device restarting\n");
1540 schedule_work(&pdata
->restart_work
);
1543 static struct rtnl_link_stats64
*xgbe_get_stats64(struct net_device
*netdev
,
1544 struct rtnl_link_stats64
*s
)
1546 struct xgbe_prv_data
*pdata
= netdev_priv(netdev
);
1547 struct xgbe_mmc_stats
*pstats
= &pdata
->mmc_stats
;
1549 DBGPR("-->%s\n", __func__
);
1551 pdata
->hw_if
.read_mmc_stats(pdata
);
1553 s
->rx_packets
= pstats
->rxframecount_gb
;
1554 s
->rx_bytes
= pstats
->rxoctetcount_gb
;
1555 s
->rx_errors
= pstats
->rxframecount_gb
-
1556 pstats
->rxbroadcastframes_g
-
1557 pstats
->rxmulticastframes_g
-
1558 pstats
->rxunicastframes_g
;
1559 s
->multicast
= pstats
->rxmulticastframes_g
;
1560 s
->rx_length_errors
= pstats
->rxlengtherror
;
1561 s
->rx_crc_errors
= pstats
->rxcrcerror
;
1562 s
->rx_fifo_errors
= pstats
->rxfifooverflow
;
1564 s
->tx_packets
= pstats
->txframecount_gb
;
1565 s
->tx_bytes
= pstats
->txoctetcount_gb
;
1566 s
->tx_errors
= pstats
->txframecount_gb
- pstats
->txframecount_g
;
1567 s
->tx_dropped
= netdev
->stats
.tx_dropped
;
1569 DBGPR("<--%s\n", __func__
);
1574 static int xgbe_vlan_rx_add_vid(struct net_device
*netdev
, __be16 proto
,
1577 struct xgbe_prv_data
*pdata
= netdev_priv(netdev
);
1578 struct xgbe_hw_if
*hw_if
= &pdata
->hw_if
;
1580 DBGPR("-->%s\n", __func__
);
1582 set_bit(vid
, pdata
->active_vlans
);
1583 hw_if
->update_vlan_hash_table(pdata
);
1585 DBGPR("<--%s\n", __func__
);
1590 static int xgbe_vlan_rx_kill_vid(struct net_device
*netdev
, __be16 proto
,
1593 struct xgbe_prv_data
*pdata
= netdev_priv(netdev
);
1594 struct xgbe_hw_if
*hw_if
= &pdata
->hw_if
;
1596 DBGPR("-->%s\n", __func__
);
1598 clear_bit(vid
, pdata
->active_vlans
);
1599 hw_if
->update_vlan_hash_table(pdata
);
1601 DBGPR("<--%s\n", __func__
);
1606 #ifdef CONFIG_NET_POLL_CONTROLLER
1607 static void xgbe_poll_controller(struct net_device
*netdev
)
1609 struct xgbe_prv_data
*pdata
= netdev_priv(netdev
);
1610 struct xgbe_channel
*channel
;
1613 DBGPR("-->xgbe_poll_controller\n");
1615 if (pdata
->per_channel_irq
) {
1616 channel
= pdata
->channel
;
1617 for (i
= 0; i
< pdata
->channel_count
; i
++, channel
++)
1618 xgbe_dma_isr(channel
->dma_irq
, channel
);
1620 disable_irq(pdata
->dev_irq
);
1621 xgbe_isr(pdata
->dev_irq
, pdata
);
1622 enable_irq(pdata
->dev_irq
);
1625 DBGPR("<--xgbe_poll_controller\n");
1627 #endif /* End CONFIG_NET_POLL_CONTROLLER */
1629 static int xgbe_setup_tc(struct net_device
*netdev
, u32 handle
, __be16 proto
,
1630 struct tc_to_netdev
*tc_to_netdev
)
1632 struct xgbe_prv_data
*pdata
= netdev_priv(netdev
);
1635 if (tc_to_netdev
->type
!= TC_SETUP_MQPRIO
)
1638 tc
= tc_to_netdev
->tc
;
1640 if (tc
> pdata
->hw_feat
.tc_cnt
)
1643 pdata
->num_tcs
= tc
;
1644 pdata
->hw_if
.config_tc(pdata
);
1649 static int xgbe_set_features(struct net_device
*netdev
,
1650 netdev_features_t features
)
1652 struct xgbe_prv_data
*pdata
= netdev_priv(netdev
);
1653 struct xgbe_hw_if
*hw_if
= &pdata
->hw_if
;
1654 netdev_features_t rxhash
, rxcsum
, rxvlan
, rxvlan_filter
;
1657 rxhash
= pdata
->netdev_features
& NETIF_F_RXHASH
;
1658 rxcsum
= pdata
->netdev_features
& NETIF_F_RXCSUM
;
1659 rxvlan
= pdata
->netdev_features
& NETIF_F_HW_VLAN_CTAG_RX
;
1660 rxvlan_filter
= pdata
->netdev_features
& NETIF_F_HW_VLAN_CTAG_FILTER
;
1662 if ((features
& NETIF_F_RXHASH
) && !rxhash
)
1663 ret
= hw_if
->enable_rss(pdata
);
1664 else if (!(features
& NETIF_F_RXHASH
) && rxhash
)
1665 ret
= hw_if
->disable_rss(pdata
);
1669 if ((features
& NETIF_F_RXCSUM
) && !rxcsum
)
1670 hw_if
->enable_rx_csum(pdata
);
1671 else if (!(features
& NETIF_F_RXCSUM
) && rxcsum
)
1672 hw_if
->disable_rx_csum(pdata
);
1674 if ((features
& NETIF_F_HW_VLAN_CTAG_RX
) && !rxvlan
)
1675 hw_if
->enable_rx_vlan_stripping(pdata
);
1676 else if (!(features
& NETIF_F_HW_VLAN_CTAG_RX
) && rxvlan
)
1677 hw_if
->disable_rx_vlan_stripping(pdata
);
1679 if ((features
& NETIF_F_HW_VLAN_CTAG_FILTER
) && !rxvlan_filter
)
1680 hw_if
->enable_rx_vlan_filtering(pdata
);
1681 else if (!(features
& NETIF_F_HW_VLAN_CTAG_FILTER
) && rxvlan_filter
)
1682 hw_if
->disable_rx_vlan_filtering(pdata
);
1684 pdata
->netdev_features
= features
;
1686 DBGPR("<--xgbe_set_features\n");
1691 static const struct net_device_ops xgbe_netdev_ops
= {
1692 .ndo_open
= xgbe_open
,
1693 .ndo_stop
= xgbe_close
,
1694 .ndo_start_xmit
= xgbe_xmit
,
1695 .ndo_set_rx_mode
= xgbe_set_rx_mode
,
1696 .ndo_set_mac_address
= xgbe_set_mac_address
,
1697 .ndo_validate_addr
= eth_validate_addr
,
1698 .ndo_do_ioctl
= xgbe_ioctl
,
1699 .ndo_change_mtu
= xgbe_change_mtu
,
1700 .ndo_tx_timeout
= xgbe_tx_timeout
,
1701 .ndo_get_stats64
= xgbe_get_stats64
,
1702 .ndo_vlan_rx_add_vid
= xgbe_vlan_rx_add_vid
,
1703 .ndo_vlan_rx_kill_vid
= xgbe_vlan_rx_kill_vid
,
1704 #ifdef CONFIG_NET_POLL_CONTROLLER
1705 .ndo_poll_controller
= xgbe_poll_controller
,
1707 .ndo_setup_tc
= xgbe_setup_tc
,
1708 .ndo_set_features
= xgbe_set_features
,
1711 const struct net_device_ops
*xgbe_get_netdev_ops(void)
1713 return &xgbe_netdev_ops
;
1716 static void xgbe_rx_refresh(struct xgbe_channel
*channel
)
1718 struct xgbe_prv_data
*pdata
= channel
->pdata
;
1719 struct xgbe_hw_if
*hw_if
= &pdata
->hw_if
;
1720 struct xgbe_desc_if
*desc_if
= &pdata
->desc_if
;
1721 struct xgbe_ring
*ring
= channel
->rx_ring
;
1722 struct xgbe_ring_data
*rdata
;
1724 while (ring
->dirty
!= ring
->cur
) {
1725 rdata
= XGBE_GET_DESC_DATA(ring
, ring
->dirty
);
1727 /* Reset rdata values */
1728 desc_if
->unmap_rdata(pdata
, rdata
);
1730 if (desc_if
->map_rx_buffer(pdata
, ring
, rdata
))
1733 hw_if
->rx_desc_reset(pdata
, rdata
, ring
->dirty
);
1738 /* Make sure everything is written before the register write */
1741 /* Update the Rx Tail Pointer Register with address of
1742 * the last cleaned entry */
1743 rdata
= XGBE_GET_DESC_DATA(ring
, ring
->dirty
- 1);
1744 XGMAC_DMA_IOWRITE(channel
, DMA_CH_RDTR_LO
,
1745 lower_32_bits(rdata
->rdesc_dma
));
1748 static struct sk_buff
*xgbe_create_skb(struct xgbe_prv_data
*pdata
,
1749 struct napi_struct
*napi
,
1750 struct xgbe_ring_data
*rdata
,
1753 struct sk_buff
*skb
;
1755 unsigned int copy_len
;
1757 skb
= napi_alloc_skb(napi
, rdata
->rx
.hdr
.dma_len
);
1761 /* Start with the header buffer which may contain just the header
1762 * or the header plus data
1764 dma_sync_single_range_for_cpu(pdata
->dev
, rdata
->rx
.hdr
.dma_base
,
1765 rdata
->rx
.hdr
.dma_off
,
1766 rdata
->rx
.hdr
.dma_len
, DMA_FROM_DEVICE
);
1768 packet
= page_address(rdata
->rx
.hdr
.pa
.pages
) +
1769 rdata
->rx
.hdr
.pa
.pages_offset
;
1770 copy_len
= (rdata
->rx
.hdr_len
) ? rdata
->rx
.hdr_len
: len
;
1771 copy_len
= min(rdata
->rx
.hdr
.dma_len
, copy_len
);
1772 skb_copy_to_linear_data(skb
, packet
, copy_len
);
1773 skb_put(skb
, copy_len
);
1777 /* Add the remaining data as a frag */
1778 dma_sync_single_range_for_cpu(pdata
->dev
,
1779 rdata
->rx
.buf
.dma_base
,
1780 rdata
->rx
.buf
.dma_off
,
1781 rdata
->rx
.buf
.dma_len
,
1784 skb_add_rx_frag(skb
, skb_shinfo(skb
)->nr_frags
,
1785 rdata
->rx
.buf
.pa
.pages
,
1786 rdata
->rx
.buf
.pa
.pages_offset
,
1787 len
, rdata
->rx
.buf
.dma_len
);
1788 rdata
->rx
.buf
.pa
.pages
= NULL
;
1794 static int xgbe_tx_poll(struct xgbe_channel
*channel
)
1796 struct xgbe_prv_data
*pdata
= channel
->pdata
;
1797 struct xgbe_hw_if
*hw_if
= &pdata
->hw_if
;
1798 struct xgbe_desc_if
*desc_if
= &pdata
->desc_if
;
1799 struct xgbe_ring
*ring
= channel
->tx_ring
;
1800 struct xgbe_ring_data
*rdata
;
1801 struct xgbe_ring_desc
*rdesc
;
1802 struct net_device
*netdev
= pdata
->netdev
;
1803 struct netdev_queue
*txq
;
1805 unsigned int tx_packets
= 0, tx_bytes
= 0;
1808 DBGPR("-->xgbe_tx_poll\n");
1810 /* Nothing to do if there isn't a Tx ring for this channel */
1816 /* Be sure we get ring->cur before accessing descriptor data */
1819 txq
= netdev_get_tx_queue(netdev
, channel
->queue_index
);
1821 while ((processed
< XGBE_TX_DESC_MAX_PROC
) &&
1822 (ring
->dirty
!= cur
)) {
1823 rdata
= XGBE_GET_DESC_DATA(ring
, ring
->dirty
);
1824 rdesc
= rdata
->rdesc
;
1826 if (!hw_if
->tx_complete(rdesc
))
1829 /* Make sure descriptor fields are read after reading the OWN
1833 if (netif_msg_tx_done(pdata
))
1834 xgbe_dump_tx_desc(pdata
, ring
, ring
->dirty
, 1, 0);
1836 if (hw_if
->is_last_desc(rdesc
)) {
1837 tx_packets
+= rdata
->tx
.packets
;
1838 tx_bytes
+= rdata
->tx
.bytes
;
1841 /* Free the SKB and reset the descriptor for re-use */
1842 desc_if
->unmap_rdata(pdata
, rdata
);
1843 hw_if
->tx_desc_reset(rdata
);
1852 netdev_tx_completed_queue(txq
, tx_packets
, tx_bytes
);
1854 if ((ring
->tx
.queue_stopped
== 1) &&
1855 (xgbe_tx_avail_desc(ring
) > XGBE_TX_DESC_MIN_FREE
)) {
1856 ring
->tx
.queue_stopped
= 0;
1857 netif_tx_wake_queue(txq
);
1860 DBGPR("<--xgbe_tx_poll: processed=%d\n", processed
);
1865 static int xgbe_rx_poll(struct xgbe_channel
*channel
, int budget
)
1867 struct xgbe_prv_data
*pdata
= channel
->pdata
;
1868 struct xgbe_hw_if
*hw_if
= &pdata
->hw_if
;
1869 struct xgbe_ring
*ring
= channel
->rx_ring
;
1870 struct xgbe_ring_data
*rdata
;
1871 struct xgbe_packet_data
*packet
;
1872 struct net_device
*netdev
= pdata
->netdev
;
1873 struct napi_struct
*napi
;
1874 struct sk_buff
*skb
;
1875 struct skb_shared_hwtstamps
*hwtstamps
;
1876 unsigned int incomplete
, error
, context_next
, context
;
1877 unsigned int len
, rdesc_len
, max_len
;
1878 unsigned int received
= 0;
1879 int packet_count
= 0;
1881 DBGPR("-->xgbe_rx_poll: budget=%d\n", budget
);
1883 /* Nothing to do if there isn't a Rx ring for this channel */
1890 napi
= (pdata
->per_channel_irq
) ? &channel
->napi
: &pdata
->napi
;
1892 rdata
= XGBE_GET_DESC_DATA(ring
, ring
->cur
);
1893 packet
= &ring
->packet_data
;
1894 while (packet_count
< budget
) {
1895 DBGPR(" cur = %d\n", ring
->cur
);
1897 /* First time in loop see if we need to restore state */
1898 if (!received
&& rdata
->state_saved
) {
1899 skb
= rdata
->state
.skb
;
1900 error
= rdata
->state
.error
;
1901 len
= rdata
->state
.len
;
1903 memset(packet
, 0, sizeof(*packet
));
1910 rdata
= XGBE_GET_DESC_DATA(ring
, ring
->cur
);
1912 if (xgbe_rx_dirty_desc(ring
) > (XGBE_RX_DESC_CNT
>> 3))
1913 xgbe_rx_refresh(channel
);
1915 if (hw_if
->dev_read(channel
))
1921 incomplete
= XGMAC_GET_BITS(packet
->attributes
,
1922 RX_PACKET_ATTRIBUTES
,
1924 context_next
= XGMAC_GET_BITS(packet
->attributes
,
1925 RX_PACKET_ATTRIBUTES
,
1927 context
= XGMAC_GET_BITS(packet
->attributes
,
1928 RX_PACKET_ATTRIBUTES
,
1931 /* Earlier error, just drain the remaining data */
1932 if ((incomplete
|| context_next
) && error
)
1935 if (error
|| packet
->errors
) {
1937 netif_err(pdata
, rx_err
, netdev
,
1938 "error in received packet\n");
1944 /* Length is cumulative, get this descriptor's length */
1945 rdesc_len
= rdata
->rx
.len
- len
;
1948 if (rdesc_len
&& !skb
) {
1949 skb
= xgbe_create_skb(pdata
, napi
, rdata
,
1953 } else if (rdesc_len
) {
1954 dma_sync_single_range_for_cpu(pdata
->dev
,
1955 rdata
->rx
.buf
.dma_base
,
1956 rdata
->rx
.buf
.dma_off
,
1957 rdata
->rx
.buf
.dma_len
,
1960 skb_add_rx_frag(skb
, skb_shinfo(skb
)->nr_frags
,
1961 rdata
->rx
.buf
.pa
.pages
,
1962 rdata
->rx
.buf
.pa
.pages_offset
,
1964 rdata
->rx
.buf
.dma_len
);
1965 rdata
->rx
.buf
.pa
.pages
= NULL
;
1969 if (incomplete
|| context_next
)
1975 /* Be sure we don't exceed the configured MTU */
1976 max_len
= netdev
->mtu
+ ETH_HLEN
;
1977 if (!(netdev
->features
& NETIF_F_HW_VLAN_CTAG_RX
) &&
1978 (skb
->protocol
== htons(ETH_P_8021Q
)))
1979 max_len
+= VLAN_HLEN
;
1981 if (skb
->len
> max_len
) {
1982 netif_err(pdata
, rx_err
, netdev
,
1983 "packet length exceeds configured MTU\n");
1988 if (netif_msg_pktdata(pdata
))
1989 xgbe_print_pkt(netdev
, skb
, false);
1991 skb_checksum_none_assert(skb
);
1992 if (XGMAC_GET_BITS(packet
->attributes
,
1993 RX_PACKET_ATTRIBUTES
, CSUM_DONE
))
1994 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
1996 if (XGMAC_GET_BITS(packet
->attributes
,
1997 RX_PACKET_ATTRIBUTES
, VLAN_CTAG
))
1998 __vlan_hwaccel_put_tag(skb
, htons(ETH_P_8021Q
),
2001 if (XGMAC_GET_BITS(packet
->attributes
,
2002 RX_PACKET_ATTRIBUTES
, RX_TSTAMP
)) {
2005 nsec
= timecounter_cyc2time(&pdata
->tstamp_tc
,
2007 hwtstamps
= skb_hwtstamps(skb
);
2008 hwtstamps
->hwtstamp
= ns_to_ktime(nsec
);
2011 if (XGMAC_GET_BITS(packet
->attributes
,
2012 RX_PACKET_ATTRIBUTES
, RSS_HASH
))
2013 skb_set_hash(skb
, packet
->rss_hash
,
2014 packet
->rss_hash_type
);
2017 skb
->protocol
= eth_type_trans(skb
, netdev
);
2018 skb_record_rx_queue(skb
, channel
->queue_index
);
2020 napi_gro_receive(napi
, skb
);
2026 /* Check if we need to save state before leaving */
2027 if (received
&& (incomplete
|| context_next
)) {
2028 rdata
= XGBE_GET_DESC_DATA(ring
, ring
->cur
);
2029 rdata
->state_saved
= 1;
2030 rdata
->state
.skb
= skb
;
2031 rdata
->state
.len
= len
;
2032 rdata
->state
.error
= error
;
2035 DBGPR("<--xgbe_rx_poll: packet_count = %d\n", packet_count
);
2037 return packet_count
;
2040 static int xgbe_one_poll(struct napi_struct
*napi
, int budget
)
2042 struct xgbe_channel
*channel
= container_of(napi
, struct xgbe_channel
,
2046 DBGPR("-->xgbe_one_poll: budget=%d\n", budget
);
2048 /* Cleanup Tx ring first */
2049 xgbe_tx_poll(channel
);
2051 /* Process Rx ring next */
2052 processed
= xgbe_rx_poll(channel
, budget
);
2054 /* If we processed everything, we are done */
2055 if (processed
< budget
) {
2056 /* Turn off polling */
2057 napi_complete_done(napi
, processed
);
2059 /* Enable Tx and Rx interrupts */
2060 enable_irq(channel
->dma_irq
);
2063 DBGPR("<--xgbe_one_poll: received = %d\n", processed
);
2068 static int xgbe_all_poll(struct napi_struct
*napi
, int budget
)
2070 struct xgbe_prv_data
*pdata
= container_of(napi
, struct xgbe_prv_data
,
2072 struct xgbe_channel
*channel
;
2074 int processed
, last_processed
;
2077 DBGPR("-->xgbe_all_poll: budget=%d\n", budget
);
2080 ring_budget
= budget
/ pdata
->rx_ring_count
;
2082 last_processed
= processed
;
2084 channel
= pdata
->channel
;
2085 for (i
= 0; i
< pdata
->channel_count
; i
++, channel
++) {
2086 /* Cleanup Tx ring first */
2087 xgbe_tx_poll(channel
);
2089 /* Process Rx ring next */
2090 if (ring_budget
> (budget
- processed
))
2091 ring_budget
= budget
- processed
;
2092 processed
+= xgbe_rx_poll(channel
, ring_budget
);
2094 } while ((processed
< budget
) && (processed
!= last_processed
));
2096 /* If we processed everything, we are done */
2097 if (processed
< budget
) {
2098 /* Turn off polling */
2099 napi_complete_done(napi
, processed
);
2101 /* Enable Tx and Rx interrupts */
2102 xgbe_enable_rx_tx_ints(pdata
);
2105 DBGPR("<--xgbe_all_poll: received = %d\n", processed
);
2110 void xgbe_dump_tx_desc(struct xgbe_prv_data
*pdata
, struct xgbe_ring
*ring
,
2111 unsigned int idx
, unsigned int count
, unsigned int flag
)
2113 struct xgbe_ring_data
*rdata
;
2114 struct xgbe_ring_desc
*rdesc
;
2117 rdata
= XGBE_GET_DESC_DATA(ring
, idx
);
2118 rdesc
= rdata
->rdesc
;
2119 netdev_dbg(pdata
->netdev
,
2120 "TX_NORMAL_DESC[%d %s] = %08x:%08x:%08x:%08x\n", idx
,
2121 (flag
== 1) ? "QUEUED FOR TX" : "TX BY DEVICE",
2122 le32_to_cpu(rdesc
->desc0
),
2123 le32_to_cpu(rdesc
->desc1
),
2124 le32_to_cpu(rdesc
->desc2
),
2125 le32_to_cpu(rdesc
->desc3
));
2130 void xgbe_dump_rx_desc(struct xgbe_prv_data
*pdata
, struct xgbe_ring
*ring
,
2133 struct xgbe_ring_data
*rdata
;
2134 struct xgbe_ring_desc
*rdesc
;
2136 rdata
= XGBE_GET_DESC_DATA(ring
, idx
);
2137 rdesc
= rdata
->rdesc
;
2138 netdev_dbg(pdata
->netdev
,
2139 "RX_NORMAL_DESC[%d RX BY DEVICE] = %08x:%08x:%08x:%08x\n",
2140 idx
, le32_to_cpu(rdesc
->desc0
), le32_to_cpu(rdesc
->desc1
),
2141 le32_to_cpu(rdesc
->desc2
), le32_to_cpu(rdesc
->desc3
));
2144 void xgbe_print_pkt(struct net_device
*netdev
, struct sk_buff
*skb
, bool tx_rx
)
2146 struct ethhdr
*eth
= (struct ethhdr
*)skb
->data
;
2147 unsigned char *buf
= skb
->data
;
2148 unsigned char buffer
[128];
2151 netdev_dbg(netdev
, "\n************** SKB dump ****************\n");
2153 netdev_dbg(netdev
, "%s packet of %d bytes\n",
2154 (tx_rx
? "TX" : "RX"), skb
->len
);
2156 netdev_dbg(netdev
, "Dst MAC addr: %pM\n", eth
->h_dest
);
2157 netdev_dbg(netdev
, "Src MAC addr: %pM\n", eth
->h_source
);
2158 netdev_dbg(netdev
, "Protocol: %#06hx\n", ntohs(eth
->h_proto
));
2160 for (i
= 0, j
= 0; i
< skb
->len
;) {
2161 j
+= snprintf(buffer
+ j
, sizeof(buffer
) - j
, "%02hhx",
2164 if ((i
% 32) == 0) {
2165 netdev_dbg(netdev
, " %#06x: %s\n", i
- 32, buffer
);
2167 } else if ((i
% 16) == 0) {
2170 } else if ((i
% 4) == 0) {
2175 netdev_dbg(netdev
, " %#06x: %s\n", i
- (i
% 32), buffer
);
2177 netdev_dbg(netdev
, "\n************** SKB dump ****************\n");