2 * AMD 10Gb Ethernet driver
4 * This file is available to you under your choice of the following two
9 * Copyright (c) 2014 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 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/phy.h>
118 #include <linux/clk.h>
119 #include <linux/bitrev.h>
120 #include <linux/crc32.h>
123 #include "xgbe-common.h"
125 static unsigned int xgbe_usec_to_riwt(struct xgbe_prv_data *pdata,
131 DBGPR("-->xgbe_usec_to_riwt\n");
133 rate = clk_get_rate(pdata->sysclk);
136 * Convert the input usec value to the watchdog timer value. Each
137 * watchdog timer value is equivalent to 256 clock cycles.
138 * Calculate the required value as:
139 * ( usec * ( system_clock_mhz / 10^6 ) / 256
141 ret = (usec * (rate / 1000000)) / 256;
143 DBGPR("<--xgbe_usec_to_riwt\n");
148 static unsigned int xgbe_riwt_to_usec(struct xgbe_prv_data *pdata,
154 DBGPR("-->xgbe_riwt_to_usec\n");
156 rate = clk_get_rate(pdata->sysclk);
159 * Convert the input watchdog timer value to the usec value. Each
160 * watchdog timer value is equivalent to 256 clock cycles.
161 * Calculate the required value as:
162 * ( riwt * 256 ) / ( system_clock_mhz / 10^6 )
164 ret = (riwt * 256) / (rate / 1000000);
166 DBGPR("<--xgbe_riwt_to_usec\n");
171 static int xgbe_config_pblx8(struct xgbe_prv_data *pdata)
173 struct xgbe_channel *channel;
176 channel = pdata->channel;
177 for (i = 0; i < pdata->channel_count; i++, channel++)
178 XGMAC_DMA_IOWRITE_BITS(channel, DMA_CH_CR, PBLX8,
184 static int xgbe_get_tx_pbl_val(struct xgbe_prv_data *pdata)
186 return XGMAC_DMA_IOREAD_BITS(pdata->channel, DMA_CH_TCR, PBL);
189 static int xgbe_config_tx_pbl_val(struct xgbe_prv_data *pdata)
191 struct xgbe_channel *channel;
194 channel = pdata->channel;
195 for (i = 0; i < pdata->channel_count; i++, channel++) {
196 if (!channel->tx_ring)
199 XGMAC_DMA_IOWRITE_BITS(channel, DMA_CH_TCR, PBL,
206 static int xgbe_get_rx_pbl_val(struct xgbe_prv_data *pdata)
208 return XGMAC_DMA_IOREAD_BITS(pdata->channel, DMA_CH_RCR, PBL);
211 static int xgbe_config_rx_pbl_val(struct xgbe_prv_data *pdata)
213 struct xgbe_channel *channel;
216 channel = pdata->channel;
217 for (i = 0; i < pdata->channel_count; i++, channel++) {
218 if (!channel->rx_ring)
221 XGMAC_DMA_IOWRITE_BITS(channel, DMA_CH_RCR, PBL,
228 static int xgbe_config_osp_mode(struct xgbe_prv_data *pdata)
230 struct xgbe_channel *channel;
233 channel = pdata->channel;
234 for (i = 0; i < pdata->channel_count; i++, channel++) {
235 if (!channel->tx_ring)
238 XGMAC_DMA_IOWRITE_BITS(channel, DMA_CH_TCR, OSP,
245 static int xgbe_config_rsf_mode(struct xgbe_prv_data *pdata, unsigned int val)
249 for (i = 0; i < pdata->rx_q_count; i++)
250 XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_RQOMR, RSF, val);
255 static int xgbe_config_tsf_mode(struct xgbe_prv_data *pdata, unsigned int val)
259 for (i = 0; i < pdata->tx_q_count; i++)
260 XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_TQOMR, TSF, val);
265 static int xgbe_config_rx_threshold(struct xgbe_prv_data *pdata,
270 for (i = 0; i < pdata->rx_q_count; i++)
271 XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_RQOMR, RTC, val);
276 static int xgbe_config_tx_threshold(struct xgbe_prv_data *pdata,
281 for (i = 0; i < pdata->tx_q_count; i++)
282 XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_TQOMR, TTC, val);
287 static int xgbe_config_rx_coalesce(struct xgbe_prv_data *pdata)
289 struct xgbe_channel *channel;
292 channel = pdata->channel;
293 for (i = 0; i < pdata->channel_count; i++, channel++) {
294 if (!channel->rx_ring)
297 XGMAC_DMA_IOWRITE_BITS(channel, DMA_CH_RIWT, RWT,
304 static int xgbe_config_tx_coalesce(struct xgbe_prv_data *pdata)
309 static void xgbe_config_rx_buffer_size(struct xgbe_prv_data *pdata)
311 struct xgbe_channel *channel;
314 channel = pdata->channel;
315 for (i = 0; i < pdata->channel_count; i++, channel++) {
316 if (!channel->rx_ring)
319 XGMAC_DMA_IOWRITE_BITS(channel, DMA_CH_RCR, RBSZ,
324 static void xgbe_config_tso_mode(struct xgbe_prv_data *pdata)
326 struct xgbe_channel *channel;
329 channel = pdata->channel;
330 for (i = 0; i < pdata->channel_count; i++, channel++) {
331 if (!channel->tx_ring)
334 XGMAC_DMA_IOWRITE_BITS(channel, DMA_CH_TCR, TSE, 1);
338 static void xgbe_config_sph_mode(struct xgbe_prv_data *pdata)
340 struct xgbe_channel *channel;
343 channel = pdata->channel;
344 for (i = 0; i < pdata->channel_count; i++, channel++) {
345 if (!channel->rx_ring)
348 XGMAC_DMA_IOWRITE_BITS(channel, DMA_CH_CR, SPH, 1);
351 XGMAC_IOWRITE_BITS(pdata, MAC_RCR, HDSMS, XGBE_SPH_HDSMS_SIZE);
354 static int xgbe_write_rss_reg(struct xgbe_prv_data *pdata, unsigned int type,
355 unsigned int index, unsigned int val)
360 mutex_lock(&pdata->rss_mutex);
362 if (XGMAC_IOREAD_BITS(pdata, MAC_RSSAR, OB)) {
367 XGMAC_IOWRITE(pdata, MAC_RSSDR, val);
369 XGMAC_IOWRITE_BITS(pdata, MAC_RSSAR, RSSIA, index);
370 XGMAC_IOWRITE_BITS(pdata, MAC_RSSAR, ADDRT, type);
371 XGMAC_IOWRITE_BITS(pdata, MAC_RSSAR, CT, 0);
372 XGMAC_IOWRITE_BITS(pdata, MAC_RSSAR, OB, 1);
376 if (!XGMAC_IOREAD_BITS(pdata, MAC_RSSAR, OB))
379 usleep_range(1000, 1500);
385 mutex_unlock(&pdata->rss_mutex);
390 static int xgbe_write_rss_hash_key(struct xgbe_prv_data *pdata)
392 unsigned int key_regs = sizeof(pdata->rss_key) / sizeof(u32);
393 unsigned int *key = (unsigned int *)&pdata->rss_key;
397 ret = xgbe_write_rss_reg(pdata, XGBE_RSS_HASH_KEY_TYPE,
406 static int xgbe_write_rss_lookup_table(struct xgbe_prv_data *pdata)
411 for (i = 0; i < ARRAY_SIZE(pdata->rss_table); i++) {
412 ret = xgbe_write_rss_reg(pdata,
413 XGBE_RSS_LOOKUP_TABLE_TYPE, i,
414 pdata->rss_table[i]);
422 static int xgbe_set_rss_hash_key(struct xgbe_prv_data *pdata, const u8 *key)
424 memcpy(pdata->rss_key, key, sizeof(pdata->rss_key));
426 return xgbe_write_rss_hash_key(pdata);
429 static int xgbe_set_rss_lookup_table(struct xgbe_prv_data *pdata,
434 for (i = 0; i < ARRAY_SIZE(pdata->rss_table); i++)
435 XGMAC_SET_BITS(pdata->rss_table[i], MAC_RSSDR, DMCH, table[i]);
437 return xgbe_write_rss_lookup_table(pdata);
440 static int xgbe_enable_rss(struct xgbe_prv_data *pdata)
444 if (!pdata->hw_feat.rss)
447 /* Program the hash key */
448 ret = xgbe_write_rss_hash_key(pdata);
452 /* Program the lookup table */
453 ret = xgbe_write_rss_lookup_table(pdata);
457 /* Set the RSS options */
458 XGMAC_IOWRITE(pdata, MAC_RSSCR, pdata->rss_options);
461 XGMAC_IOWRITE_BITS(pdata, MAC_RSSCR, RSSE, 1);
466 static int xgbe_disable_rss(struct xgbe_prv_data *pdata)
468 if (!pdata->hw_feat.rss)
471 XGMAC_IOWRITE_BITS(pdata, MAC_RSSCR, RSSE, 0);
476 static void xgbe_config_rss(struct xgbe_prv_data *pdata)
480 if (!pdata->hw_feat.rss)
483 if (pdata->netdev->features & NETIF_F_RXHASH)
484 ret = xgbe_enable_rss(pdata);
486 ret = xgbe_disable_rss(pdata);
489 netdev_err(pdata->netdev,
490 "error configuring RSS, RSS disabled\n");
493 static int xgbe_disable_tx_flow_control(struct xgbe_prv_data *pdata)
495 unsigned int max_q_count, q_count;
496 unsigned int reg, reg_val;
499 /* Clear MTL flow control */
500 for (i = 0; i < pdata->rx_q_count; i++)
501 XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_RQOMR, EHFC, 0);
503 /* Clear MAC flow control */
504 max_q_count = XGMAC_MAX_FLOW_CONTROL_QUEUES;
505 q_count = min_t(unsigned int, pdata->tx_q_count, max_q_count);
507 for (i = 0; i < q_count; i++) {
508 reg_val = XGMAC_IOREAD(pdata, reg);
509 XGMAC_SET_BITS(reg_val, MAC_Q0TFCR, TFE, 0);
510 XGMAC_IOWRITE(pdata, reg, reg_val);
512 reg += MAC_QTFCR_INC;
518 static int xgbe_enable_tx_flow_control(struct xgbe_prv_data *pdata)
520 unsigned int max_q_count, q_count;
521 unsigned int reg, reg_val;
524 /* Set MTL flow control */
525 for (i = 0; i < pdata->rx_q_count; i++)
526 XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_RQOMR, EHFC, 1);
528 /* Set MAC flow control */
529 max_q_count = XGMAC_MAX_FLOW_CONTROL_QUEUES;
530 q_count = min_t(unsigned int, pdata->tx_q_count, max_q_count);
532 for (i = 0; i < q_count; i++) {
533 reg_val = XGMAC_IOREAD(pdata, reg);
535 /* Enable transmit flow control */
536 XGMAC_SET_BITS(reg_val, MAC_Q0TFCR, TFE, 1);
538 XGMAC_SET_BITS(reg_val, MAC_Q0TFCR, PT, 0xffff);
540 XGMAC_IOWRITE(pdata, reg, reg_val);
542 reg += MAC_QTFCR_INC;
548 static int xgbe_disable_rx_flow_control(struct xgbe_prv_data *pdata)
550 XGMAC_IOWRITE_BITS(pdata, MAC_RFCR, RFE, 0);
555 static int xgbe_enable_rx_flow_control(struct xgbe_prv_data *pdata)
557 XGMAC_IOWRITE_BITS(pdata, MAC_RFCR, RFE, 1);
562 static int xgbe_config_tx_flow_control(struct xgbe_prv_data *pdata)
564 struct ieee_pfc *pfc = pdata->pfc;
566 if (pdata->tx_pause || (pfc && pfc->pfc_en))
567 xgbe_enable_tx_flow_control(pdata);
569 xgbe_disable_tx_flow_control(pdata);
574 static int xgbe_config_rx_flow_control(struct xgbe_prv_data *pdata)
576 struct ieee_pfc *pfc = pdata->pfc;
578 if (pdata->rx_pause || (pfc && pfc->pfc_en))
579 xgbe_enable_rx_flow_control(pdata);
581 xgbe_disable_rx_flow_control(pdata);
586 static void xgbe_config_flow_control(struct xgbe_prv_data *pdata)
588 struct ieee_pfc *pfc = pdata->pfc;
590 xgbe_config_tx_flow_control(pdata);
591 xgbe_config_rx_flow_control(pdata);
593 XGMAC_IOWRITE_BITS(pdata, MAC_RFCR, PFCE,
594 (pfc && pfc->pfc_en) ? 1 : 0);
597 static void xgbe_enable_dma_interrupts(struct xgbe_prv_data *pdata)
599 struct xgbe_channel *channel;
600 unsigned int dma_ch_isr, dma_ch_ier;
603 channel = pdata->channel;
604 for (i = 0; i < pdata->channel_count; i++, channel++) {
605 /* Clear all the interrupts which are set */
606 dma_ch_isr = XGMAC_DMA_IOREAD(channel, DMA_CH_SR);
607 XGMAC_DMA_IOWRITE(channel, DMA_CH_SR, dma_ch_isr);
609 /* Clear all interrupt enable bits */
612 /* Enable following interrupts
613 * NIE - Normal Interrupt Summary Enable
614 * AIE - Abnormal Interrupt Summary Enable
615 * FBEE - Fatal Bus Error Enable
617 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, NIE, 1);
618 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, AIE, 1);
619 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, FBEE, 1);
621 if (channel->tx_ring) {
622 /* Enable the following Tx interrupts
623 * TIE - Transmit Interrupt Enable (unless using
624 * per channel interrupts)
626 if (!pdata->per_channel_irq)
627 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, TIE, 1);
629 if (channel->rx_ring) {
630 /* Enable following Rx interrupts
631 * RBUE - Receive Buffer Unavailable Enable
632 * RIE - Receive Interrupt Enable (unless using
633 * per channel interrupts)
635 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, RBUE, 1);
636 if (!pdata->per_channel_irq)
637 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, RIE, 1);
640 XGMAC_DMA_IOWRITE(channel, DMA_CH_IER, dma_ch_ier);
644 static void xgbe_enable_mtl_interrupts(struct xgbe_prv_data *pdata)
646 unsigned int mtl_q_isr;
647 unsigned int q_count, i;
649 q_count = max(pdata->hw_feat.tx_q_cnt, pdata->hw_feat.rx_q_cnt);
650 for (i = 0; i < q_count; i++) {
651 /* Clear all the interrupts which are set */
652 mtl_q_isr = XGMAC_MTL_IOREAD(pdata, i, MTL_Q_ISR);
653 XGMAC_MTL_IOWRITE(pdata, i, MTL_Q_ISR, mtl_q_isr);
655 /* No MTL interrupts to be enabled */
656 XGMAC_MTL_IOWRITE(pdata, i, MTL_Q_IER, 0);
660 static void xgbe_enable_mac_interrupts(struct xgbe_prv_data *pdata)
662 unsigned int mac_ier = 0;
664 /* Enable Timestamp interrupt */
665 XGMAC_SET_BITS(mac_ier, MAC_IER, TSIE, 1);
667 XGMAC_IOWRITE(pdata, MAC_IER, mac_ier);
669 /* Enable all counter interrupts */
670 XGMAC_IOWRITE_BITS(pdata, MMC_RIER, ALL_INTERRUPTS, 0xffffffff);
671 XGMAC_IOWRITE_BITS(pdata, MMC_TIER, ALL_INTERRUPTS, 0xffffffff);
674 static int xgbe_set_gmii_speed(struct xgbe_prv_data *pdata)
676 XGMAC_IOWRITE_BITS(pdata, MAC_TCR, SS, 0x3);
681 static int xgbe_set_gmii_2500_speed(struct xgbe_prv_data *pdata)
683 XGMAC_IOWRITE_BITS(pdata, MAC_TCR, SS, 0x2);
688 static int xgbe_set_xgmii_speed(struct xgbe_prv_data *pdata)
690 XGMAC_IOWRITE_BITS(pdata, MAC_TCR, SS, 0);
695 static int xgbe_set_promiscuous_mode(struct xgbe_prv_data *pdata,
698 unsigned int val = enable ? 1 : 0;
700 if (XGMAC_IOREAD_BITS(pdata, MAC_PFR, PR) == val)
703 DBGPR(" %s promiscuous mode\n", enable ? "entering" : "leaving");
704 XGMAC_IOWRITE_BITS(pdata, MAC_PFR, PR, val);
709 static int xgbe_set_all_multicast_mode(struct xgbe_prv_data *pdata,
712 unsigned int val = enable ? 1 : 0;
714 if (XGMAC_IOREAD_BITS(pdata, MAC_PFR, PM) == val)
717 DBGPR(" %s allmulti mode\n", enable ? "entering" : "leaving");
718 XGMAC_IOWRITE_BITS(pdata, MAC_PFR, PM, val);
723 static void xgbe_set_mac_reg(struct xgbe_prv_data *pdata,
724 struct netdev_hw_addr *ha, unsigned int *mac_reg)
726 unsigned int mac_addr_hi, mac_addr_lo;
733 mac_addr = (u8 *)&mac_addr_lo;
734 mac_addr[0] = ha->addr[0];
735 mac_addr[1] = ha->addr[1];
736 mac_addr[2] = ha->addr[2];
737 mac_addr[3] = ha->addr[3];
738 mac_addr = (u8 *)&mac_addr_hi;
739 mac_addr[0] = ha->addr[4];
740 mac_addr[1] = ha->addr[5];
742 DBGPR(" adding mac address %pM at 0x%04x\n", ha->addr,
745 XGMAC_SET_BITS(mac_addr_hi, MAC_MACA1HR, AE, 1);
748 XGMAC_IOWRITE(pdata, *mac_reg, mac_addr_hi);
749 *mac_reg += MAC_MACA_INC;
750 XGMAC_IOWRITE(pdata, *mac_reg, mac_addr_lo);
751 *mac_reg += MAC_MACA_INC;
754 static void xgbe_set_mac_addn_addrs(struct xgbe_prv_data *pdata)
756 struct net_device *netdev = pdata->netdev;
757 struct netdev_hw_addr *ha;
758 unsigned int mac_reg;
759 unsigned int addn_macs;
761 mac_reg = MAC_MACA1HR;
762 addn_macs = pdata->hw_feat.addn_mac;
764 if (netdev_uc_count(netdev) > addn_macs) {
765 xgbe_set_promiscuous_mode(pdata, 1);
767 netdev_for_each_uc_addr(ha, netdev) {
768 xgbe_set_mac_reg(pdata, ha, &mac_reg);
772 if (netdev_mc_count(netdev) > addn_macs) {
773 xgbe_set_all_multicast_mode(pdata, 1);
775 netdev_for_each_mc_addr(ha, netdev) {
776 xgbe_set_mac_reg(pdata, ha, &mac_reg);
782 /* Clear remaining additional MAC address entries */
784 xgbe_set_mac_reg(pdata, NULL, &mac_reg);
787 static void xgbe_set_mac_hash_table(struct xgbe_prv_data *pdata)
789 struct net_device *netdev = pdata->netdev;
790 struct netdev_hw_addr *ha;
791 unsigned int hash_reg;
792 unsigned int hash_table_shift, hash_table_count;
793 u32 hash_table[XGBE_MAC_HASH_TABLE_SIZE];
797 hash_table_shift = 26 - (pdata->hw_feat.hash_table_size >> 7);
798 hash_table_count = pdata->hw_feat.hash_table_size / 32;
799 memset(hash_table, 0, sizeof(hash_table));
801 /* Build the MAC Hash Table register values */
802 netdev_for_each_uc_addr(ha, netdev) {
803 crc = bitrev32(~crc32_le(~0, ha->addr, ETH_ALEN));
804 crc >>= hash_table_shift;
805 hash_table[crc >> 5] |= (1 << (crc & 0x1f));
808 netdev_for_each_mc_addr(ha, netdev) {
809 crc = bitrev32(~crc32_le(~0, ha->addr, ETH_ALEN));
810 crc >>= hash_table_shift;
811 hash_table[crc >> 5] |= (1 << (crc & 0x1f));
814 /* Set the MAC Hash Table registers */
816 for (i = 0; i < hash_table_count; i++) {
817 XGMAC_IOWRITE(pdata, hash_reg, hash_table[i]);
818 hash_reg += MAC_HTR_INC;
822 static int xgbe_add_mac_addresses(struct xgbe_prv_data *pdata)
824 if (pdata->hw_feat.hash_table_size)
825 xgbe_set_mac_hash_table(pdata);
827 xgbe_set_mac_addn_addrs(pdata);
832 static int xgbe_set_mac_address(struct xgbe_prv_data *pdata, u8 *addr)
834 unsigned int mac_addr_hi, mac_addr_lo;
836 mac_addr_hi = (addr[5] << 8) | (addr[4] << 0);
837 mac_addr_lo = (addr[3] << 24) | (addr[2] << 16) |
838 (addr[1] << 8) | (addr[0] << 0);
840 XGMAC_IOWRITE(pdata, MAC_MACA0HR, mac_addr_hi);
841 XGMAC_IOWRITE(pdata, MAC_MACA0LR, mac_addr_lo);
846 static int xgbe_read_mmd_regs(struct xgbe_prv_data *pdata, int prtad,
849 unsigned int mmd_address;
852 if (mmd_reg & MII_ADDR_C45)
853 mmd_address = mmd_reg & ~MII_ADDR_C45;
855 mmd_address = (pdata->mdio_mmd << 16) | (mmd_reg & 0xffff);
857 /* The PCS registers are accessed using mmio. The underlying APB3
858 * management interface uses indirect addressing to access the MMD
859 * register sets. This requires accessing of the PCS register in two
860 * phases, an address phase and a data phase.
862 * The mmio interface is based on 32-bit offsets and values. All
863 * register offsets must therefore be adjusted by left shifting the
864 * offset 2 bits and reading 32 bits of data.
866 mutex_lock(&pdata->xpcs_mutex);
867 XPCS_IOWRITE(pdata, PCS_MMD_SELECT << 2, mmd_address >> 8);
868 mmd_data = XPCS_IOREAD(pdata, (mmd_address & 0xff) << 2);
869 mutex_unlock(&pdata->xpcs_mutex);
874 static void xgbe_write_mmd_regs(struct xgbe_prv_data *pdata, int prtad,
875 int mmd_reg, int mmd_data)
877 unsigned int mmd_address;
879 if (mmd_reg & MII_ADDR_C45)
880 mmd_address = mmd_reg & ~MII_ADDR_C45;
882 mmd_address = (pdata->mdio_mmd << 16) | (mmd_reg & 0xffff);
884 /* The PCS registers are accessed using mmio. The underlying APB3
885 * management interface uses indirect addressing to access the MMD
886 * register sets. This requires accessing of the PCS register in two
887 * phases, an address phase and a data phase.
889 * The mmio interface is based on 32-bit offsets and values. All
890 * register offsets must therefore be adjusted by left shifting the
891 * offset 2 bits and reading 32 bits of data.
893 mutex_lock(&pdata->xpcs_mutex);
894 XPCS_IOWRITE(pdata, PCS_MMD_SELECT << 2, mmd_address >> 8);
895 XPCS_IOWRITE(pdata, (mmd_address & 0xff) << 2, mmd_data);
896 mutex_unlock(&pdata->xpcs_mutex);
899 static int xgbe_tx_complete(struct xgbe_ring_desc *rdesc)
901 return !XGMAC_GET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, OWN);
904 static int xgbe_disable_rx_csum(struct xgbe_prv_data *pdata)
906 XGMAC_IOWRITE_BITS(pdata, MAC_RCR, IPC, 0);
911 static int xgbe_enable_rx_csum(struct xgbe_prv_data *pdata)
913 XGMAC_IOWRITE_BITS(pdata, MAC_RCR, IPC, 1);
918 static int xgbe_enable_rx_vlan_stripping(struct xgbe_prv_data *pdata)
920 /* Put the VLAN tag in the Rx descriptor */
921 XGMAC_IOWRITE_BITS(pdata, MAC_VLANTR, EVLRXS, 1);
923 /* Don't check the VLAN type */
924 XGMAC_IOWRITE_BITS(pdata, MAC_VLANTR, DOVLTC, 1);
926 /* Check only C-TAG (0x8100) packets */
927 XGMAC_IOWRITE_BITS(pdata, MAC_VLANTR, ERSVLM, 0);
929 /* Don't consider an S-TAG (0x88A8) packet as a VLAN packet */
930 XGMAC_IOWRITE_BITS(pdata, MAC_VLANTR, ESVL, 0);
932 /* Enable VLAN tag stripping */
933 XGMAC_IOWRITE_BITS(pdata, MAC_VLANTR, EVLS, 0x3);
938 static int xgbe_disable_rx_vlan_stripping(struct xgbe_prv_data *pdata)
940 XGMAC_IOWRITE_BITS(pdata, MAC_VLANTR, EVLS, 0);
945 static int xgbe_enable_rx_vlan_filtering(struct xgbe_prv_data *pdata)
947 /* Enable VLAN filtering */
948 XGMAC_IOWRITE_BITS(pdata, MAC_PFR, VTFE, 1);
950 /* Enable VLAN Hash Table filtering */
951 XGMAC_IOWRITE_BITS(pdata, MAC_VLANTR, VTHM, 1);
953 /* Disable VLAN tag inverse matching */
954 XGMAC_IOWRITE_BITS(pdata, MAC_VLANTR, VTIM, 0);
956 /* Only filter on the lower 12-bits of the VLAN tag */
957 XGMAC_IOWRITE_BITS(pdata, MAC_VLANTR, ETV, 1);
959 /* In order for the VLAN Hash Table filtering to be effective,
960 * the VLAN tag identifier in the VLAN Tag Register must not
961 * be zero. Set the VLAN tag identifier to "1" to enable the
962 * VLAN Hash Table filtering. This implies that a VLAN tag of
963 * 1 will always pass filtering.
965 XGMAC_IOWRITE_BITS(pdata, MAC_VLANTR, VL, 1);
970 static int xgbe_disable_rx_vlan_filtering(struct xgbe_prv_data *pdata)
972 /* Disable VLAN filtering */
973 XGMAC_IOWRITE_BITS(pdata, MAC_PFR, VTFE, 0);
979 #define CRCPOLY_LE 0xedb88320
981 static u32 xgbe_vid_crc32_le(__le16 vid_le)
983 u32 poly = CRCPOLY_LE;
986 unsigned char *data = (unsigned char *)&vid_le;
987 unsigned char data_byte = 0;
990 bits = get_bitmask_order(VLAN_VID_MASK);
991 for (i = 0; i < bits; i++) {
993 data_byte = data[i / 8];
995 temp = ((crc & 1) ^ data_byte) & 1;
1006 static int xgbe_update_vlan_hash_table(struct xgbe_prv_data *pdata)
1011 u16 vlan_hash_table = 0;
1013 /* Generate the VLAN Hash Table value */
1014 for_each_set_bit(vid, pdata->active_vlans, VLAN_N_VID) {
1015 /* Get the CRC32 value of the VLAN ID */
1016 vid_le = cpu_to_le16(vid);
1017 crc = bitrev32(~xgbe_vid_crc32_le(vid_le)) >> 28;
1019 vlan_hash_table |= (1 << crc);
1022 /* Set the VLAN Hash Table filtering register */
1023 XGMAC_IOWRITE_BITS(pdata, MAC_VLANHTR, VLHT, vlan_hash_table);
1028 static void xgbe_tx_desc_reset(struct xgbe_ring_data *rdata)
1030 struct xgbe_ring_desc *rdesc = rdata->rdesc;
1032 /* Reset the Tx descriptor
1033 * Set buffer 1 (lo) address to zero
1034 * Set buffer 1 (hi) address to zero
1035 * Reset all other control bits (IC, TTSE, B2L & B1L)
1036 * Reset all other control bits (OWN, CTXT, FD, LD, CPC, CIC, etc)
1043 /* Make sure ownership is written to the descriptor */
1047 static void xgbe_tx_desc_init(struct xgbe_channel *channel)
1049 struct xgbe_ring *ring = channel->tx_ring;
1050 struct xgbe_ring_data *rdata;
1052 int start_index = ring->cur;
1054 DBGPR("-->tx_desc_init\n");
1056 /* Initialze all descriptors */
1057 for (i = 0; i < ring->rdesc_count; i++) {
1058 rdata = XGBE_GET_DESC_DATA(ring, i);
1060 /* Initialize Tx descriptor */
1061 xgbe_tx_desc_reset(rdata);
1064 /* Update the total number of Tx descriptors */
1065 XGMAC_DMA_IOWRITE(channel, DMA_CH_TDRLR, ring->rdesc_count - 1);
1067 /* Update the starting address of descriptor ring */
1068 rdata = XGBE_GET_DESC_DATA(ring, start_index);
1069 XGMAC_DMA_IOWRITE(channel, DMA_CH_TDLR_HI,
1070 upper_32_bits(rdata->rdesc_dma));
1071 XGMAC_DMA_IOWRITE(channel, DMA_CH_TDLR_LO,
1072 lower_32_bits(rdata->rdesc_dma));
1074 DBGPR("<--tx_desc_init\n");
1077 static void xgbe_rx_desc_reset(struct xgbe_ring_data *rdata)
1079 struct xgbe_ring_desc *rdesc = rdata->rdesc;
1081 /* Reset the Rx descriptor
1082 * Set buffer 1 (lo) address to header dma address (lo)
1083 * Set buffer 1 (hi) address to header dma address (hi)
1084 * Set buffer 2 (lo) address to buffer dma address (lo)
1085 * Set buffer 2 (hi) address to buffer dma address (hi) and
1086 * set control bits OWN and INTE
1088 rdesc->desc0 = cpu_to_le32(lower_32_bits(rdata->rx_hdr.dma));
1089 rdesc->desc1 = cpu_to_le32(upper_32_bits(rdata->rx_hdr.dma));
1090 rdesc->desc2 = cpu_to_le32(lower_32_bits(rdata->rx_buf.dma));
1091 rdesc->desc3 = cpu_to_le32(upper_32_bits(rdata->rx_buf.dma));
1093 XGMAC_SET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, INTE,
1094 rdata->interrupt ? 1 : 0);
1096 /* Since the Rx DMA engine is likely running, make sure everything
1097 * is written to the descriptor(s) before setting the OWN bit
1098 * for the descriptor
1102 XGMAC_SET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, OWN, 1);
1104 /* Make sure ownership is written to the descriptor */
1108 static void xgbe_rx_desc_init(struct xgbe_channel *channel)
1110 struct xgbe_prv_data *pdata = channel->pdata;
1111 struct xgbe_ring *ring = channel->rx_ring;
1112 struct xgbe_ring_data *rdata;
1113 unsigned int start_index = ring->cur;
1114 unsigned int rx_coalesce, rx_frames;
1117 DBGPR("-->rx_desc_init\n");
1119 rx_coalesce = (pdata->rx_riwt || pdata->rx_frames) ? 1 : 0;
1120 rx_frames = pdata->rx_frames;
1122 /* Initialize all descriptors */
1123 for (i = 0; i < ring->rdesc_count; i++) {
1124 rdata = XGBE_GET_DESC_DATA(ring, i);
1126 /* Set interrupt on completion bit as appropriate */
1127 if (rx_coalesce && (!rx_frames || ((i + 1) % rx_frames)))
1128 rdata->interrupt = 0;
1130 rdata->interrupt = 1;
1132 /* Initialize Rx descriptor */
1133 xgbe_rx_desc_reset(rdata);
1136 /* Update the total number of Rx descriptors */
1137 XGMAC_DMA_IOWRITE(channel, DMA_CH_RDRLR, ring->rdesc_count - 1);
1139 /* Update the starting address of descriptor ring */
1140 rdata = XGBE_GET_DESC_DATA(ring, start_index);
1141 XGMAC_DMA_IOWRITE(channel, DMA_CH_RDLR_HI,
1142 upper_32_bits(rdata->rdesc_dma));
1143 XGMAC_DMA_IOWRITE(channel, DMA_CH_RDLR_LO,
1144 lower_32_bits(rdata->rdesc_dma));
1146 /* Update the Rx Descriptor Tail Pointer */
1147 rdata = XGBE_GET_DESC_DATA(ring, start_index + ring->rdesc_count - 1);
1148 XGMAC_DMA_IOWRITE(channel, DMA_CH_RDTR_LO,
1149 lower_32_bits(rdata->rdesc_dma));
1151 DBGPR("<--rx_desc_init\n");
1154 static void xgbe_update_tstamp_addend(struct xgbe_prv_data *pdata,
1155 unsigned int addend)
1157 /* Set the addend register value and tell the device */
1158 XGMAC_IOWRITE(pdata, MAC_TSAR, addend);
1159 XGMAC_IOWRITE_BITS(pdata, MAC_TSCR, TSADDREG, 1);
1161 /* Wait for addend update to complete */
1162 while (XGMAC_IOREAD_BITS(pdata, MAC_TSCR, TSADDREG))
1166 static void xgbe_set_tstamp_time(struct xgbe_prv_data *pdata, unsigned int sec,
1169 /* Set the time values and tell the device */
1170 XGMAC_IOWRITE(pdata, MAC_STSUR, sec);
1171 XGMAC_IOWRITE(pdata, MAC_STNUR, nsec);
1172 XGMAC_IOWRITE_BITS(pdata, MAC_TSCR, TSINIT, 1);
1174 /* Wait for time update to complete */
1175 while (XGMAC_IOREAD_BITS(pdata, MAC_TSCR, TSINIT))
1179 static u64 xgbe_get_tstamp_time(struct xgbe_prv_data *pdata)
1183 nsec = XGMAC_IOREAD(pdata, MAC_STSR);
1184 nsec *= NSEC_PER_SEC;
1185 nsec += XGMAC_IOREAD(pdata, MAC_STNR);
1190 static u64 xgbe_get_tx_tstamp(struct xgbe_prv_data *pdata)
1192 unsigned int tx_snr;
1195 tx_snr = XGMAC_IOREAD(pdata, MAC_TXSNR);
1196 if (XGMAC_GET_BITS(tx_snr, MAC_TXSNR, TXTSSTSMIS))
1199 nsec = XGMAC_IOREAD(pdata, MAC_TXSSR);
1200 nsec *= NSEC_PER_SEC;
1206 static void xgbe_get_rx_tstamp(struct xgbe_packet_data *packet,
1207 struct xgbe_ring_desc *rdesc)
1211 if (XGMAC_GET_BITS_LE(rdesc->desc3, RX_CONTEXT_DESC3, TSA) &&
1212 !XGMAC_GET_BITS_LE(rdesc->desc3, RX_CONTEXT_DESC3, TSD)) {
1213 nsec = le32_to_cpu(rdesc->desc1);
1215 nsec |= le32_to_cpu(rdesc->desc0);
1216 if (nsec != 0xffffffffffffffffULL) {
1217 packet->rx_tstamp = nsec;
1218 XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
1224 static int xgbe_config_tstamp(struct xgbe_prv_data *pdata,
1225 unsigned int mac_tscr)
1227 /* Set one nano-second accuracy */
1228 XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSCTRLSSR, 1);
1230 /* Set fine timestamp update */
1231 XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSCFUPDT, 1);
1233 /* Overwrite earlier timestamps */
1234 XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TXTSSTSM, 1);
1236 XGMAC_IOWRITE(pdata, MAC_TSCR, mac_tscr);
1238 /* Exit if timestamping is not enabled */
1239 if (!XGMAC_GET_BITS(mac_tscr, MAC_TSCR, TSENA))
1242 /* Initialize time registers */
1243 XGMAC_IOWRITE_BITS(pdata, MAC_SSIR, SSINC, XGBE_TSTAMP_SSINC);
1244 XGMAC_IOWRITE_BITS(pdata, MAC_SSIR, SNSINC, XGBE_TSTAMP_SNSINC);
1245 xgbe_update_tstamp_addend(pdata, pdata->tstamp_addend);
1246 xgbe_set_tstamp_time(pdata, 0, 0);
1248 /* Initialize the timecounter */
1249 timecounter_init(&pdata->tstamp_tc, &pdata->tstamp_cc,
1250 ktime_to_ns(ktime_get_real()));
1255 static void xgbe_config_dcb_tc(struct xgbe_prv_data *pdata)
1257 struct ieee_ets *ets = pdata->ets;
1258 unsigned int total_weight, min_weight, weight;
1264 /* Set Tx to deficit weighted round robin scheduling algorithm (when
1265 * traffic class is using ETS algorithm)
1267 XGMAC_IOWRITE_BITS(pdata, MTL_OMR, ETSALG, MTL_ETSALG_DWRR);
1269 /* Set Traffic Class algorithms */
1270 total_weight = pdata->netdev->mtu * pdata->hw_feat.tc_cnt;
1271 min_weight = total_weight / 100;
1275 for (i = 0; i < pdata->hw_feat.tc_cnt; i++) {
1276 switch (ets->tc_tsa[i]) {
1277 case IEEE_8021QAZ_TSA_STRICT:
1278 DBGPR(" TC%u using SP\n", i);
1279 XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_TC_ETSCR, TSA,
1282 case IEEE_8021QAZ_TSA_ETS:
1283 weight = total_weight * ets->tc_tx_bw[i] / 100;
1284 weight = clamp(weight, min_weight, total_weight);
1286 DBGPR(" TC%u using DWRR (weight %u)\n", i, weight);
1287 XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_TC_ETSCR, TSA,
1289 XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_TC_QWR, QW,
1296 static void xgbe_config_dcb_pfc(struct xgbe_prv_data *pdata)
1298 struct ieee_pfc *pfc = pdata->pfc;
1299 struct ieee_ets *ets = pdata->ets;
1300 unsigned int mask, reg, reg_val;
1301 unsigned int tc, prio;
1306 for (tc = 0; tc < pdata->hw_feat.tc_cnt; tc++) {
1308 for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; prio++) {
1309 if ((pfc->pfc_en & (1 << prio)) &&
1310 (ets->prio_tc[prio] == tc))
1311 mask |= (1 << prio);
1315 DBGPR(" TC%u PFC mask=%#x\n", tc, mask);
1316 reg = MTL_TCPM0R + (MTL_TCPM_INC * (tc / MTL_TCPM_TC_PER_REG));
1317 reg_val = XGMAC_IOREAD(pdata, reg);
1319 reg_val &= ~(0xff << ((tc % MTL_TCPM_TC_PER_REG) << 3));
1320 reg_val |= (mask << ((tc % MTL_TCPM_TC_PER_REG) << 3));
1322 XGMAC_IOWRITE(pdata, reg, reg_val);
1325 xgbe_config_flow_control(pdata);
1328 static void xgbe_dev_xmit(struct xgbe_channel *channel)
1330 struct xgbe_prv_data *pdata = channel->pdata;
1331 struct xgbe_ring *ring = channel->tx_ring;
1332 struct xgbe_ring_data *rdata;
1333 struct xgbe_ring_desc *rdesc;
1334 struct xgbe_packet_data *packet = &ring->packet_data;
1335 unsigned int csum, tso, vlan;
1336 unsigned int tso_context, vlan_context;
1337 unsigned int tx_coalesce, tx_frames;
1338 int start_index = ring->cur;
1341 DBGPR("-->xgbe_dev_xmit\n");
1343 csum = XGMAC_GET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES,
1345 tso = XGMAC_GET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES,
1347 vlan = XGMAC_GET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES,
1350 if (tso && (packet->mss != ring->tx.cur_mss))
1355 if (vlan && (packet->vlan_ctag != ring->tx.cur_vlan_ctag))
1360 tx_coalesce = (pdata->tx_usecs || pdata->tx_frames) ? 1 : 0;
1361 tx_frames = pdata->tx_frames;
1362 if (tx_coalesce && !channel->tx_timer_active)
1363 ring->coalesce_count = 0;
1365 rdata = XGBE_GET_DESC_DATA(ring, ring->cur);
1366 rdesc = rdata->rdesc;
1368 /* Create a context descriptor if this is a TSO packet */
1369 if (tso_context || vlan_context) {
1371 DBGPR(" TSO context descriptor, mss=%u\n",
1374 /* Set the MSS size */
1375 XGMAC_SET_BITS_LE(rdesc->desc2, TX_CONTEXT_DESC2,
1378 /* Mark it as a CONTEXT descriptor */
1379 XGMAC_SET_BITS_LE(rdesc->desc3, TX_CONTEXT_DESC3,
1382 /* Indicate this descriptor contains the MSS */
1383 XGMAC_SET_BITS_LE(rdesc->desc3, TX_CONTEXT_DESC3,
1386 ring->tx.cur_mss = packet->mss;
1390 DBGPR(" VLAN context descriptor, ctag=%u\n",
1393 /* Mark it as a CONTEXT descriptor */
1394 XGMAC_SET_BITS_LE(rdesc->desc3, TX_CONTEXT_DESC3,
1397 /* Set the VLAN tag */
1398 XGMAC_SET_BITS_LE(rdesc->desc3, TX_CONTEXT_DESC3,
1399 VT, packet->vlan_ctag);
1401 /* Indicate this descriptor contains the VLAN tag */
1402 XGMAC_SET_BITS_LE(rdesc->desc3, TX_CONTEXT_DESC3,
1405 ring->tx.cur_vlan_ctag = packet->vlan_ctag;
1409 rdata = XGBE_GET_DESC_DATA(ring, ring->cur);
1410 rdesc = rdata->rdesc;
1413 /* Update buffer address (for TSO this is the header) */
1414 rdesc->desc0 = cpu_to_le32(lower_32_bits(rdata->skb_dma));
1415 rdesc->desc1 = cpu_to_le32(upper_32_bits(rdata->skb_dma));
1417 /* Update the buffer length */
1418 XGMAC_SET_BITS_LE(rdesc->desc2, TX_NORMAL_DESC2, HL_B1L,
1419 rdata->skb_dma_len);
1421 /* VLAN tag insertion check */
1423 XGMAC_SET_BITS_LE(rdesc->desc2, TX_NORMAL_DESC2, VTIR,
1424 TX_NORMAL_DESC2_VLAN_INSERT);
1426 /* Timestamp enablement check */
1427 if (XGMAC_GET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES, PTP))
1428 XGMAC_SET_BITS_LE(rdesc->desc2, TX_NORMAL_DESC2, TTSE, 1);
1430 /* Set IC bit based on Tx coalescing settings */
1431 XGMAC_SET_BITS_LE(rdesc->desc2, TX_NORMAL_DESC2, IC, 1);
1432 if (tx_coalesce && (!tx_frames ||
1433 (++ring->coalesce_count % tx_frames)))
1435 XGMAC_SET_BITS_LE(rdesc->desc2, TX_NORMAL_DESC2, IC, 0);
1437 /* Mark it as First Descriptor */
1438 XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, FD, 1);
1440 /* Mark it as a NORMAL descriptor */
1441 XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, CTXT, 0);
1443 /* Set OWN bit if not the first descriptor */
1444 if (ring->cur != start_index)
1445 XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, OWN, 1);
1449 XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, TSE, 1);
1450 XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, TCPPL,
1451 packet->tcp_payload_len);
1452 XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, TCPHDRLEN,
1453 packet->tcp_header_len / 4);
1455 /* Enable CRC and Pad Insertion */
1456 XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, CPC, 0);
1458 /* Enable HW CSUM */
1460 XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3,
1463 /* Set the total length to be transmitted */
1464 XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, FL,
1468 for (i = ring->cur - start_index + 1; i < packet->rdesc_count; i++) {
1470 rdata = XGBE_GET_DESC_DATA(ring, ring->cur);
1471 rdesc = rdata->rdesc;
1473 /* Update buffer address */
1474 rdesc->desc0 = cpu_to_le32(lower_32_bits(rdata->skb_dma));
1475 rdesc->desc1 = cpu_to_le32(upper_32_bits(rdata->skb_dma));
1477 /* Update the buffer length */
1478 XGMAC_SET_BITS_LE(rdesc->desc2, TX_NORMAL_DESC2, HL_B1L,
1479 rdata->skb_dma_len);
1481 /* Set IC bit based on Tx coalescing settings */
1482 XGMAC_SET_BITS_LE(rdesc->desc2, TX_NORMAL_DESC2, IC, 1);
1483 if (tx_coalesce && (!tx_frames ||
1484 (++ring->coalesce_count % tx_frames)))
1486 XGMAC_SET_BITS_LE(rdesc->desc2, TX_NORMAL_DESC2, IC, 0);
1489 XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, OWN, 1);
1491 /* Mark it as NORMAL descriptor */
1492 XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, CTXT, 0);
1494 /* Enable HW CSUM */
1496 XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3,
1500 /* Set LAST bit for the last descriptor */
1501 XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, LD, 1);
1503 /* In case the Tx DMA engine is running, make sure everything
1504 * is written to the descriptor(s) before setting the OWN bit
1505 * for the first descriptor
1509 /* Set OWN bit for the first descriptor */
1510 rdata = XGBE_GET_DESC_DATA(ring, start_index);
1511 rdesc = rdata->rdesc;
1512 XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, OWN, 1);
1514 #ifdef XGMAC_ENABLE_TX_DESC_DUMP
1515 xgbe_dump_tx_desc(ring, start_index, packet->rdesc_count, 1);
1518 /* Make sure ownership is written to the descriptor */
1521 /* Issue a poll command to Tx DMA by writing address
1522 * of next immediate free descriptor */
1524 rdata = XGBE_GET_DESC_DATA(ring, ring->cur);
1525 XGMAC_DMA_IOWRITE(channel, DMA_CH_TDTR_LO,
1526 lower_32_bits(rdata->rdesc_dma));
1528 /* Start the Tx coalescing timer */
1529 if (tx_coalesce && !channel->tx_timer_active) {
1530 channel->tx_timer_active = 1;
1531 hrtimer_start(&channel->tx_timer,
1532 ktime_set(0, pdata->tx_usecs * NSEC_PER_USEC),
1536 DBGPR(" %s: descriptors %u to %u written\n",
1537 channel->name, start_index & (ring->rdesc_count - 1),
1538 (ring->cur - 1) & (ring->rdesc_count - 1));
1540 DBGPR("<--xgbe_dev_xmit\n");
1543 static int xgbe_dev_read(struct xgbe_channel *channel)
1545 struct xgbe_ring *ring = channel->rx_ring;
1546 struct xgbe_ring_data *rdata;
1547 struct xgbe_ring_desc *rdesc;
1548 struct xgbe_packet_data *packet = &ring->packet_data;
1549 struct net_device *netdev = channel->pdata->netdev;
1550 unsigned int err, etlt, l34t;
1552 DBGPR("-->xgbe_dev_read: cur = %d\n", ring->cur);
1554 rdata = XGBE_GET_DESC_DATA(ring, ring->cur);
1555 rdesc = rdata->rdesc;
1557 /* Check for data availability */
1558 if (XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, OWN))
1561 #ifdef XGMAC_ENABLE_RX_DESC_DUMP
1562 xgbe_dump_rx_desc(ring, rdesc, ring->cur);
1565 if (XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, CTXT)) {
1566 /* Timestamp Context Descriptor */
1567 xgbe_get_rx_tstamp(packet, rdesc);
1569 XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
1571 XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
1576 /* Normal Descriptor, be sure Context Descriptor bit is off */
1577 XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES, CONTEXT, 0);
1579 /* Indicate if a Context Descriptor is next */
1580 if (XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, CDA))
1581 XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
1584 /* Get the header length */
1585 if (XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, FD))
1586 rdata->hdr_len = XGMAC_GET_BITS_LE(rdesc->desc2,
1587 RX_NORMAL_DESC2, HL);
1589 /* Get the RSS hash */
1590 if (XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, RSV)) {
1591 XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
1594 packet->rss_hash = le32_to_cpu(rdesc->desc1);
1596 l34t = XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, L34T);
1598 case RX_DESC3_L34T_IPV4_TCP:
1599 case RX_DESC3_L34T_IPV4_UDP:
1600 case RX_DESC3_L34T_IPV6_TCP:
1601 case RX_DESC3_L34T_IPV6_UDP:
1602 packet->rss_hash_type = PKT_HASH_TYPE_L4;
1605 packet->rss_hash_type = PKT_HASH_TYPE_L3;
1609 /* Get the packet length */
1610 rdata->len = XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, PL);
1612 if (!XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, LD)) {
1613 /* Not all the data has been transferred for this packet */
1614 XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
1619 /* This is the last of the data for this packet */
1620 XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
1623 /* Set checksum done indicator as appropriate */
1624 if (channel->pdata->netdev->features & NETIF_F_RXCSUM)
1625 XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
1628 /* Check for errors (only valid in last descriptor) */
1629 err = XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, ES);
1630 etlt = XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, ETLT);
1631 DBGPR(" err=%u, etlt=%#x\n", err, etlt);
1633 if (!err || (err && !etlt)) {
1634 if ((etlt == 0x09) &&
1635 (netdev->features & NETIF_F_HW_VLAN_CTAG_RX)) {
1636 XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
1638 packet->vlan_ctag = XGMAC_GET_BITS_LE(rdesc->desc0,
1641 DBGPR(" vlan-ctag=0x%04x\n", packet->vlan_ctag);
1644 if ((etlt == 0x05) || (etlt == 0x06))
1645 XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
1648 XGMAC_SET_BITS(packet->errors, RX_PACKET_ERRORS,
1652 DBGPR("<--xgbe_dev_read: %s - descriptor=%u (cur=%d)\n", channel->name,
1653 ring->cur & (ring->rdesc_count - 1), ring->cur);
1658 static int xgbe_is_context_desc(struct xgbe_ring_desc *rdesc)
1660 /* Rx and Tx share CTXT bit, so check TDES3.CTXT bit */
1661 return XGMAC_GET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, CTXT);
1664 static int xgbe_is_last_desc(struct xgbe_ring_desc *rdesc)
1666 /* Rx and Tx share LD bit, so check TDES3.LD bit */
1667 return XGMAC_GET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, LD);
1670 static int xgbe_enable_int(struct xgbe_channel *channel,
1671 enum xgbe_int int_id)
1673 unsigned int dma_ch_ier;
1675 dma_ch_ier = XGMAC_DMA_IOREAD(channel, DMA_CH_IER);
1678 case XGMAC_INT_DMA_CH_SR_TI:
1679 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, TIE, 1);
1681 case XGMAC_INT_DMA_CH_SR_TPS:
1682 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, TXSE, 1);
1684 case XGMAC_INT_DMA_CH_SR_TBU:
1685 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, TBUE, 1);
1687 case XGMAC_INT_DMA_CH_SR_RI:
1688 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, RIE, 1);
1690 case XGMAC_INT_DMA_CH_SR_RBU:
1691 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, RBUE, 1);
1693 case XGMAC_INT_DMA_CH_SR_RPS:
1694 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, RSE, 1);
1696 case XGMAC_INT_DMA_CH_SR_TI_RI:
1697 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, TIE, 1);
1698 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, RIE, 1);
1700 case XGMAC_INT_DMA_CH_SR_FBE:
1701 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, FBEE, 1);
1703 case XGMAC_INT_DMA_ALL:
1704 dma_ch_ier |= channel->saved_ier;
1710 XGMAC_DMA_IOWRITE(channel, DMA_CH_IER, dma_ch_ier);
1715 static int xgbe_disable_int(struct xgbe_channel *channel,
1716 enum xgbe_int int_id)
1718 unsigned int dma_ch_ier;
1720 dma_ch_ier = XGMAC_DMA_IOREAD(channel, DMA_CH_IER);
1723 case XGMAC_INT_DMA_CH_SR_TI:
1724 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, TIE, 0);
1726 case XGMAC_INT_DMA_CH_SR_TPS:
1727 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, TXSE, 0);
1729 case XGMAC_INT_DMA_CH_SR_TBU:
1730 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, TBUE, 0);
1732 case XGMAC_INT_DMA_CH_SR_RI:
1733 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, RIE, 0);
1735 case XGMAC_INT_DMA_CH_SR_RBU:
1736 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, RBUE, 0);
1738 case XGMAC_INT_DMA_CH_SR_RPS:
1739 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, RSE, 0);
1741 case XGMAC_INT_DMA_CH_SR_TI_RI:
1742 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, TIE, 0);
1743 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, RIE, 0);
1745 case XGMAC_INT_DMA_CH_SR_FBE:
1746 XGMAC_SET_BITS(dma_ch_ier, DMA_CH_IER, FBEE, 0);
1748 case XGMAC_INT_DMA_ALL:
1749 channel->saved_ier = dma_ch_ier & XGBE_DMA_INTERRUPT_MASK;
1750 dma_ch_ier &= ~XGBE_DMA_INTERRUPT_MASK;
1756 XGMAC_DMA_IOWRITE(channel, DMA_CH_IER, dma_ch_ier);
1761 static int xgbe_exit(struct xgbe_prv_data *pdata)
1763 unsigned int count = 2000;
1765 DBGPR("-->xgbe_exit\n");
1767 /* Issue a software reset */
1768 XGMAC_IOWRITE_BITS(pdata, DMA_MR, SWR, 1);
1769 usleep_range(10, 15);
1771 /* Poll Until Poll Condition */
1772 while (count-- && XGMAC_IOREAD_BITS(pdata, DMA_MR, SWR))
1773 usleep_range(500, 600);
1778 DBGPR("<--xgbe_exit\n");
1783 static int xgbe_flush_tx_queues(struct xgbe_prv_data *pdata)
1785 unsigned int i, count;
1787 if (XGMAC_GET_BITS(pdata->hw_feat.version, MAC_VR, SNPSVER) < 0x21)
1790 for (i = 0; i < pdata->tx_q_count; i++)
1791 XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_TQOMR, FTQ, 1);
1793 /* Poll Until Poll Condition */
1794 for (i = 0; i < pdata->tx_q_count; i++) {
1796 while (count-- && XGMAC_MTL_IOREAD_BITS(pdata, i,
1798 usleep_range(500, 600);
1807 static void xgbe_config_dma_bus(struct xgbe_prv_data *pdata)
1809 /* Set enhanced addressing mode */
1810 XGMAC_IOWRITE_BITS(pdata, DMA_SBMR, EAME, 1);
1812 /* Set the System Bus mode */
1813 XGMAC_IOWRITE_BITS(pdata, DMA_SBMR, UNDEF, 1);
1814 XGMAC_IOWRITE_BITS(pdata, DMA_SBMR, BLEN_256, 1);
1817 static void xgbe_config_dma_cache(struct xgbe_prv_data *pdata)
1819 unsigned int arcache, awcache;
1822 XGMAC_SET_BITS(arcache, DMA_AXIARCR, DRC, pdata->arcache);
1823 XGMAC_SET_BITS(arcache, DMA_AXIARCR, DRD, pdata->axdomain);
1824 XGMAC_SET_BITS(arcache, DMA_AXIARCR, TEC, pdata->arcache);
1825 XGMAC_SET_BITS(arcache, DMA_AXIARCR, TED, pdata->axdomain);
1826 XGMAC_SET_BITS(arcache, DMA_AXIARCR, THC, pdata->arcache);
1827 XGMAC_SET_BITS(arcache, DMA_AXIARCR, THD, pdata->axdomain);
1828 XGMAC_IOWRITE(pdata, DMA_AXIARCR, arcache);
1831 XGMAC_SET_BITS(awcache, DMA_AXIAWCR, DWC, pdata->awcache);
1832 XGMAC_SET_BITS(awcache, DMA_AXIAWCR, DWD, pdata->axdomain);
1833 XGMAC_SET_BITS(awcache, DMA_AXIAWCR, RPC, pdata->awcache);
1834 XGMAC_SET_BITS(awcache, DMA_AXIAWCR, RPD, pdata->axdomain);
1835 XGMAC_SET_BITS(awcache, DMA_AXIAWCR, RHC, pdata->awcache);
1836 XGMAC_SET_BITS(awcache, DMA_AXIAWCR, RHD, pdata->axdomain);
1837 XGMAC_SET_BITS(awcache, DMA_AXIAWCR, TDC, pdata->awcache);
1838 XGMAC_SET_BITS(awcache, DMA_AXIAWCR, TDD, pdata->axdomain);
1839 XGMAC_IOWRITE(pdata, DMA_AXIAWCR, awcache);
1842 static void xgbe_config_mtl_mode(struct xgbe_prv_data *pdata)
1846 /* Set Tx to weighted round robin scheduling algorithm */
1847 XGMAC_IOWRITE_BITS(pdata, MTL_OMR, ETSALG, MTL_ETSALG_WRR);
1849 /* Set Tx traffic classes to use WRR algorithm with equal weights */
1850 for (i = 0; i < pdata->hw_feat.tc_cnt; i++) {
1851 XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_TC_ETSCR, TSA,
1853 XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_TC_QWR, QW, 1);
1856 /* Set Rx to strict priority algorithm */
1857 XGMAC_IOWRITE_BITS(pdata, MTL_OMR, RAA, MTL_RAA_SP);
1860 static unsigned int xgbe_calculate_per_queue_fifo(unsigned int fifo_size,
1861 unsigned int queue_count)
1863 unsigned int q_fifo_size = 0;
1864 enum xgbe_mtl_fifo_size p_fifo = XGMAC_MTL_FIFO_SIZE_256;
1866 /* Calculate Tx/Rx fifo share per queue */
1867 switch (fifo_size) {
1869 q_fifo_size = XGBE_FIFO_SIZE_B(128);
1872 q_fifo_size = XGBE_FIFO_SIZE_B(256);
1875 q_fifo_size = XGBE_FIFO_SIZE_B(512);
1878 q_fifo_size = XGBE_FIFO_SIZE_KB(1);
1881 q_fifo_size = XGBE_FIFO_SIZE_KB(2);
1884 q_fifo_size = XGBE_FIFO_SIZE_KB(4);
1887 q_fifo_size = XGBE_FIFO_SIZE_KB(8);
1890 q_fifo_size = XGBE_FIFO_SIZE_KB(16);
1893 q_fifo_size = XGBE_FIFO_SIZE_KB(32);
1896 q_fifo_size = XGBE_FIFO_SIZE_KB(64);
1899 q_fifo_size = XGBE_FIFO_SIZE_KB(128);
1902 q_fifo_size = XGBE_FIFO_SIZE_KB(256);
1906 /* The configured value is not the actual amount of fifo RAM */
1907 q_fifo_size = min_t(unsigned int, XGBE_FIFO_MAX, q_fifo_size);
1909 q_fifo_size = q_fifo_size / queue_count;
1911 /* Set the queue fifo size programmable value */
1912 if (q_fifo_size >= XGBE_FIFO_SIZE_KB(256))
1913 p_fifo = XGMAC_MTL_FIFO_SIZE_256K;
1914 else if (q_fifo_size >= XGBE_FIFO_SIZE_KB(128))
1915 p_fifo = XGMAC_MTL_FIFO_SIZE_128K;
1916 else if (q_fifo_size >= XGBE_FIFO_SIZE_KB(64))
1917 p_fifo = XGMAC_MTL_FIFO_SIZE_64K;
1918 else if (q_fifo_size >= XGBE_FIFO_SIZE_KB(32))
1919 p_fifo = XGMAC_MTL_FIFO_SIZE_32K;
1920 else if (q_fifo_size >= XGBE_FIFO_SIZE_KB(16))
1921 p_fifo = XGMAC_MTL_FIFO_SIZE_16K;
1922 else if (q_fifo_size >= XGBE_FIFO_SIZE_KB(8))
1923 p_fifo = XGMAC_MTL_FIFO_SIZE_8K;
1924 else if (q_fifo_size >= XGBE_FIFO_SIZE_KB(4))
1925 p_fifo = XGMAC_MTL_FIFO_SIZE_4K;
1926 else if (q_fifo_size >= XGBE_FIFO_SIZE_KB(2))
1927 p_fifo = XGMAC_MTL_FIFO_SIZE_2K;
1928 else if (q_fifo_size >= XGBE_FIFO_SIZE_KB(1))
1929 p_fifo = XGMAC_MTL_FIFO_SIZE_1K;
1930 else if (q_fifo_size >= XGBE_FIFO_SIZE_B(512))
1931 p_fifo = XGMAC_MTL_FIFO_SIZE_512;
1932 else if (q_fifo_size >= XGBE_FIFO_SIZE_B(256))
1933 p_fifo = XGMAC_MTL_FIFO_SIZE_256;
1938 static void xgbe_config_tx_fifo_size(struct xgbe_prv_data *pdata)
1940 enum xgbe_mtl_fifo_size fifo_size;
1943 fifo_size = xgbe_calculate_per_queue_fifo(pdata->hw_feat.tx_fifo_size,
1946 for (i = 0; i < pdata->tx_q_count; i++)
1947 XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_TQOMR, TQS, fifo_size);
1949 netdev_notice(pdata->netdev, "%d Tx queues, %d byte fifo per queue\n",
1950 pdata->tx_q_count, ((fifo_size + 1) * 256));
1953 static void xgbe_config_rx_fifo_size(struct xgbe_prv_data *pdata)
1955 enum xgbe_mtl_fifo_size fifo_size;
1958 fifo_size = xgbe_calculate_per_queue_fifo(pdata->hw_feat.rx_fifo_size,
1961 for (i = 0; i < pdata->rx_q_count; i++)
1962 XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_RQOMR, RQS, fifo_size);
1964 netdev_notice(pdata->netdev, "%d Rx queues, %d byte fifo per queue\n",
1965 pdata->rx_q_count, ((fifo_size + 1) * 256));
1968 static void xgbe_config_queue_mapping(struct xgbe_prv_data *pdata)
1970 unsigned int qptc, qptc_extra, queue;
1971 unsigned int prio_queues;
1972 unsigned int ppq, ppq_extra, prio;
1974 unsigned int i, j, reg, reg_val;
1976 /* Map the MTL Tx Queues to Traffic Classes
1977 * Note: Tx Queues >= Traffic Classes
1979 qptc = pdata->tx_q_count / pdata->hw_feat.tc_cnt;
1980 qptc_extra = pdata->tx_q_count % pdata->hw_feat.tc_cnt;
1982 for (i = 0, queue = 0; i < pdata->hw_feat.tc_cnt; i++) {
1983 for (j = 0; j < qptc; j++) {
1984 DBGPR(" TXq%u mapped to TC%u\n", queue, i);
1985 XGMAC_MTL_IOWRITE_BITS(pdata, queue, MTL_Q_TQOMR,
1987 pdata->q2tc_map[queue++] = i;
1990 if (i < qptc_extra) {
1991 DBGPR(" TXq%u mapped to TC%u\n", queue, i);
1992 XGMAC_MTL_IOWRITE_BITS(pdata, queue, MTL_Q_TQOMR,
1994 pdata->q2tc_map[queue++] = i;
1998 /* Map the 8 VLAN priority values to available MTL Rx queues */
1999 prio_queues = min_t(unsigned int, IEEE_8021QAZ_MAX_TCS,
2001 ppq = IEEE_8021QAZ_MAX_TCS / prio_queues;
2002 ppq_extra = IEEE_8021QAZ_MAX_TCS % prio_queues;
2006 for (i = 0, prio = 0; i < prio_queues;) {
2008 for (j = 0; j < ppq; j++) {
2009 DBGPR(" PRIO%u mapped to RXq%u\n", prio, i);
2010 mask |= (1 << prio);
2011 pdata->prio2q_map[prio++] = i;
2014 if (i < ppq_extra) {
2015 DBGPR(" PRIO%u mapped to RXq%u\n", prio, i);
2016 mask |= (1 << prio);
2017 pdata->prio2q_map[prio++] = i;
2020 reg_val |= (mask << ((i++ % MAC_RQC2_Q_PER_REG) << 3));
2022 if ((i % MAC_RQC2_Q_PER_REG) && (i != prio_queues))
2025 XGMAC_IOWRITE(pdata, reg, reg_val);
2026 reg += MAC_RQC2_INC;
2030 /* Select dynamic mapping of MTL Rx queue to DMA Rx channel */
2033 for (i = 0; i < pdata->rx_q_count;) {
2034 reg_val |= (0x80 << ((i++ % MTL_RQDCM_Q_PER_REG) << 3));
2036 if ((i % MTL_RQDCM_Q_PER_REG) && (i != pdata->rx_q_count))
2039 XGMAC_IOWRITE(pdata, reg, reg_val);
2041 reg += MTL_RQDCM_INC;
2046 static void xgbe_config_flow_control_threshold(struct xgbe_prv_data *pdata)
2050 for (i = 0; i < pdata->rx_q_count; i++) {
2051 /* Activate flow control when less than 4k left in fifo */
2052 XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_RQOMR, RFA, 2);
2054 /* De-activate flow control when more than 6k left in fifo */
2055 XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_RQOMR, RFD, 4);
2059 static void xgbe_config_mac_address(struct xgbe_prv_data *pdata)
2061 xgbe_set_mac_address(pdata, pdata->netdev->dev_addr);
2063 /* Filtering is done using perfect filtering and hash filtering */
2064 if (pdata->hw_feat.hash_table_size) {
2065 XGMAC_IOWRITE_BITS(pdata, MAC_PFR, HPF, 1);
2066 XGMAC_IOWRITE_BITS(pdata, MAC_PFR, HUC, 1);
2067 XGMAC_IOWRITE_BITS(pdata, MAC_PFR, HMC, 1);
2071 static void xgbe_config_jumbo_enable(struct xgbe_prv_data *pdata)
2075 val = (pdata->netdev->mtu > XGMAC_STD_PACKET_MTU) ? 1 : 0;
2077 XGMAC_IOWRITE_BITS(pdata, MAC_RCR, JE, val);
2080 static void xgbe_config_checksum_offload(struct xgbe_prv_data *pdata)
2082 if (pdata->netdev->features & NETIF_F_RXCSUM)
2083 xgbe_enable_rx_csum(pdata);
2085 xgbe_disable_rx_csum(pdata);
2088 static void xgbe_config_vlan_support(struct xgbe_prv_data *pdata)
2090 /* Indicate that VLAN Tx CTAGs come from context descriptors */
2091 XGMAC_IOWRITE_BITS(pdata, MAC_VLANIR, CSVL, 0);
2092 XGMAC_IOWRITE_BITS(pdata, MAC_VLANIR, VLTI, 1);
2094 /* Set the current VLAN Hash Table register value */
2095 xgbe_update_vlan_hash_table(pdata);
2097 if (pdata->netdev->features & NETIF_F_HW_VLAN_CTAG_FILTER)
2098 xgbe_enable_rx_vlan_filtering(pdata);
2100 xgbe_disable_rx_vlan_filtering(pdata);
2102 if (pdata->netdev->features & NETIF_F_HW_VLAN_CTAG_RX)
2103 xgbe_enable_rx_vlan_stripping(pdata);
2105 xgbe_disable_rx_vlan_stripping(pdata);
2108 static u64 xgbe_mmc_read(struct xgbe_prv_data *pdata, unsigned int reg_lo)
2114 /* These registers are always 64 bit */
2115 case MMC_TXOCTETCOUNT_GB_LO:
2116 case MMC_TXOCTETCOUNT_G_LO:
2117 case MMC_RXOCTETCOUNT_GB_LO:
2118 case MMC_RXOCTETCOUNT_G_LO:
2126 val = XGMAC_IOREAD(pdata, reg_lo);
2129 val |= ((u64)XGMAC_IOREAD(pdata, reg_lo + 4) << 32);
2134 static void xgbe_tx_mmc_int(struct xgbe_prv_data *pdata)
2136 struct xgbe_mmc_stats *stats = &pdata->mmc_stats;
2137 unsigned int mmc_isr = XGMAC_IOREAD(pdata, MMC_TISR);
2139 if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXOCTETCOUNT_GB))
2140 stats->txoctetcount_gb +=
2141 xgbe_mmc_read(pdata, MMC_TXOCTETCOUNT_GB_LO);
2143 if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXFRAMECOUNT_GB))
2144 stats->txframecount_gb +=
2145 xgbe_mmc_read(pdata, MMC_TXFRAMECOUNT_GB_LO);
2147 if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXBROADCASTFRAMES_G))
2148 stats->txbroadcastframes_g +=
2149 xgbe_mmc_read(pdata, MMC_TXBROADCASTFRAMES_G_LO);
2151 if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXMULTICASTFRAMES_G))
2152 stats->txmulticastframes_g +=
2153 xgbe_mmc_read(pdata, MMC_TXMULTICASTFRAMES_G_LO);
2155 if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TX64OCTETS_GB))
2156 stats->tx64octets_gb +=
2157 xgbe_mmc_read(pdata, MMC_TX64OCTETS_GB_LO);
2159 if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TX65TO127OCTETS_GB))
2160 stats->tx65to127octets_gb +=
2161 xgbe_mmc_read(pdata, MMC_TX65TO127OCTETS_GB_LO);
2163 if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TX128TO255OCTETS_GB))
2164 stats->tx128to255octets_gb +=
2165 xgbe_mmc_read(pdata, MMC_TX128TO255OCTETS_GB_LO);
2167 if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TX256TO511OCTETS_GB))
2168 stats->tx256to511octets_gb +=
2169 xgbe_mmc_read(pdata, MMC_TX256TO511OCTETS_GB_LO);
2171 if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TX512TO1023OCTETS_GB))
2172 stats->tx512to1023octets_gb +=
2173 xgbe_mmc_read(pdata, MMC_TX512TO1023OCTETS_GB_LO);
2175 if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TX1024TOMAXOCTETS_GB))
2176 stats->tx1024tomaxoctets_gb +=
2177 xgbe_mmc_read(pdata, MMC_TX1024TOMAXOCTETS_GB_LO);
2179 if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXUNICASTFRAMES_GB))
2180 stats->txunicastframes_gb +=
2181 xgbe_mmc_read(pdata, MMC_TXUNICASTFRAMES_GB_LO);
2183 if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXMULTICASTFRAMES_GB))
2184 stats->txmulticastframes_gb +=
2185 xgbe_mmc_read(pdata, MMC_TXMULTICASTFRAMES_GB_LO);
2187 if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXBROADCASTFRAMES_GB))
2188 stats->txbroadcastframes_g +=
2189 xgbe_mmc_read(pdata, MMC_TXBROADCASTFRAMES_GB_LO);
2191 if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXUNDERFLOWERROR))
2192 stats->txunderflowerror +=
2193 xgbe_mmc_read(pdata, MMC_TXUNDERFLOWERROR_LO);
2195 if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXOCTETCOUNT_G))
2196 stats->txoctetcount_g +=
2197 xgbe_mmc_read(pdata, MMC_TXOCTETCOUNT_G_LO);
2199 if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXFRAMECOUNT_G))
2200 stats->txframecount_g +=
2201 xgbe_mmc_read(pdata, MMC_TXFRAMECOUNT_G_LO);
2203 if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXPAUSEFRAMES))
2204 stats->txpauseframes +=
2205 xgbe_mmc_read(pdata, MMC_TXPAUSEFRAMES_LO);
2207 if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXVLANFRAMES_G))
2208 stats->txvlanframes_g +=
2209 xgbe_mmc_read(pdata, MMC_TXVLANFRAMES_G_LO);
2212 static void xgbe_rx_mmc_int(struct xgbe_prv_data *pdata)
2214 struct xgbe_mmc_stats *stats = &pdata->mmc_stats;
2215 unsigned int mmc_isr = XGMAC_IOREAD(pdata, MMC_RISR);
2217 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXFRAMECOUNT_GB))
2218 stats->rxframecount_gb +=
2219 xgbe_mmc_read(pdata, MMC_RXFRAMECOUNT_GB_LO);
2221 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXOCTETCOUNT_GB))
2222 stats->rxoctetcount_gb +=
2223 xgbe_mmc_read(pdata, MMC_RXOCTETCOUNT_GB_LO);
2225 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXOCTETCOUNT_G))
2226 stats->rxoctetcount_g +=
2227 xgbe_mmc_read(pdata, MMC_RXOCTETCOUNT_G_LO);
2229 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXBROADCASTFRAMES_G))
2230 stats->rxbroadcastframes_g +=
2231 xgbe_mmc_read(pdata, MMC_RXBROADCASTFRAMES_G_LO);
2233 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXMULTICASTFRAMES_G))
2234 stats->rxmulticastframes_g +=
2235 xgbe_mmc_read(pdata, MMC_RXMULTICASTFRAMES_G_LO);
2237 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXCRCERROR))
2238 stats->rxcrcerror +=
2239 xgbe_mmc_read(pdata, MMC_RXCRCERROR_LO);
2241 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXRUNTERROR))
2242 stats->rxrunterror +=
2243 xgbe_mmc_read(pdata, MMC_RXRUNTERROR);
2245 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXJABBERERROR))
2246 stats->rxjabbererror +=
2247 xgbe_mmc_read(pdata, MMC_RXJABBERERROR);
2249 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXUNDERSIZE_G))
2250 stats->rxundersize_g +=
2251 xgbe_mmc_read(pdata, MMC_RXUNDERSIZE_G);
2253 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXOVERSIZE_G))
2254 stats->rxoversize_g +=
2255 xgbe_mmc_read(pdata, MMC_RXOVERSIZE_G);
2257 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RX64OCTETS_GB))
2258 stats->rx64octets_gb +=
2259 xgbe_mmc_read(pdata, MMC_RX64OCTETS_GB_LO);
2261 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RX65TO127OCTETS_GB))
2262 stats->rx65to127octets_gb +=
2263 xgbe_mmc_read(pdata, MMC_RX65TO127OCTETS_GB_LO);
2265 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RX128TO255OCTETS_GB))
2266 stats->rx128to255octets_gb +=
2267 xgbe_mmc_read(pdata, MMC_RX128TO255OCTETS_GB_LO);
2269 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RX256TO511OCTETS_GB))
2270 stats->rx256to511octets_gb +=
2271 xgbe_mmc_read(pdata, MMC_RX256TO511OCTETS_GB_LO);
2273 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RX512TO1023OCTETS_GB))
2274 stats->rx512to1023octets_gb +=
2275 xgbe_mmc_read(pdata, MMC_RX512TO1023OCTETS_GB_LO);
2277 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RX1024TOMAXOCTETS_GB))
2278 stats->rx1024tomaxoctets_gb +=
2279 xgbe_mmc_read(pdata, MMC_RX1024TOMAXOCTETS_GB_LO);
2281 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXUNICASTFRAMES_G))
2282 stats->rxunicastframes_g +=
2283 xgbe_mmc_read(pdata, MMC_RXUNICASTFRAMES_G_LO);
2285 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXLENGTHERROR))
2286 stats->rxlengtherror +=
2287 xgbe_mmc_read(pdata, MMC_RXLENGTHERROR_LO);
2289 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXOUTOFRANGETYPE))
2290 stats->rxoutofrangetype +=
2291 xgbe_mmc_read(pdata, MMC_RXOUTOFRANGETYPE_LO);
2293 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXPAUSEFRAMES))
2294 stats->rxpauseframes +=
2295 xgbe_mmc_read(pdata, MMC_RXPAUSEFRAMES_LO);
2297 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXFIFOOVERFLOW))
2298 stats->rxfifooverflow +=
2299 xgbe_mmc_read(pdata, MMC_RXFIFOOVERFLOW_LO);
2301 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXVLANFRAMES_GB))
2302 stats->rxvlanframes_gb +=
2303 xgbe_mmc_read(pdata, MMC_RXVLANFRAMES_GB_LO);
2305 if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXWATCHDOGERROR))
2306 stats->rxwatchdogerror +=
2307 xgbe_mmc_read(pdata, MMC_RXWATCHDOGERROR);
2310 static void xgbe_read_mmc_stats(struct xgbe_prv_data *pdata)
2312 struct xgbe_mmc_stats *stats = &pdata->mmc_stats;
2314 /* Freeze counters */
2315 XGMAC_IOWRITE_BITS(pdata, MMC_CR, MCF, 1);
2317 stats->txoctetcount_gb +=
2318 xgbe_mmc_read(pdata, MMC_TXOCTETCOUNT_GB_LO);
2320 stats->txframecount_gb +=
2321 xgbe_mmc_read(pdata, MMC_TXFRAMECOUNT_GB_LO);
2323 stats->txbroadcastframes_g +=
2324 xgbe_mmc_read(pdata, MMC_TXBROADCASTFRAMES_G_LO);
2326 stats->txmulticastframes_g +=
2327 xgbe_mmc_read(pdata, MMC_TXMULTICASTFRAMES_G_LO);
2329 stats->tx64octets_gb +=
2330 xgbe_mmc_read(pdata, MMC_TX64OCTETS_GB_LO);
2332 stats->tx65to127octets_gb +=
2333 xgbe_mmc_read(pdata, MMC_TX65TO127OCTETS_GB_LO);
2335 stats->tx128to255octets_gb +=
2336 xgbe_mmc_read(pdata, MMC_TX128TO255OCTETS_GB_LO);
2338 stats->tx256to511octets_gb +=
2339 xgbe_mmc_read(pdata, MMC_TX256TO511OCTETS_GB_LO);
2341 stats->tx512to1023octets_gb +=
2342 xgbe_mmc_read(pdata, MMC_TX512TO1023OCTETS_GB_LO);
2344 stats->tx1024tomaxoctets_gb +=
2345 xgbe_mmc_read(pdata, MMC_TX1024TOMAXOCTETS_GB_LO);
2347 stats->txunicastframes_gb +=
2348 xgbe_mmc_read(pdata, MMC_TXUNICASTFRAMES_GB_LO);
2350 stats->txmulticastframes_gb +=
2351 xgbe_mmc_read(pdata, MMC_TXMULTICASTFRAMES_GB_LO);
2353 stats->txbroadcastframes_g +=
2354 xgbe_mmc_read(pdata, MMC_TXBROADCASTFRAMES_GB_LO);
2356 stats->txunderflowerror +=
2357 xgbe_mmc_read(pdata, MMC_TXUNDERFLOWERROR_LO);
2359 stats->txoctetcount_g +=
2360 xgbe_mmc_read(pdata, MMC_TXOCTETCOUNT_G_LO);
2362 stats->txframecount_g +=
2363 xgbe_mmc_read(pdata, MMC_TXFRAMECOUNT_G_LO);
2365 stats->txpauseframes +=
2366 xgbe_mmc_read(pdata, MMC_TXPAUSEFRAMES_LO);
2368 stats->txvlanframes_g +=
2369 xgbe_mmc_read(pdata, MMC_TXVLANFRAMES_G_LO);
2371 stats->rxframecount_gb +=
2372 xgbe_mmc_read(pdata, MMC_RXFRAMECOUNT_GB_LO);
2374 stats->rxoctetcount_gb +=
2375 xgbe_mmc_read(pdata, MMC_RXOCTETCOUNT_GB_LO);
2377 stats->rxoctetcount_g +=
2378 xgbe_mmc_read(pdata, MMC_RXOCTETCOUNT_G_LO);
2380 stats->rxbroadcastframes_g +=
2381 xgbe_mmc_read(pdata, MMC_RXBROADCASTFRAMES_G_LO);
2383 stats->rxmulticastframes_g +=
2384 xgbe_mmc_read(pdata, MMC_RXMULTICASTFRAMES_G_LO);
2386 stats->rxcrcerror +=
2387 xgbe_mmc_read(pdata, MMC_RXCRCERROR_LO);
2389 stats->rxrunterror +=
2390 xgbe_mmc_read(pdata, MMC_RXRUNTERROR);
2392 stats->rxjabbererror +=
2393 xgbe_mmc_read(pdata, MMC_RXJABBERERROR);
2395 stats->rxundersize_g +=
2396 xgbe_mmc_read(pdata, MMC_RXUNDERSIZE_G);
2398 stats->rxoversize_g +=
2399 xgbe_mmc_read(pdata, MMC_RXOVERSIZE_G);
2401 stats->rx64octets_gb +=
2402 xgbe_mmc_read(pdata, MMC_RX64OCTETS_GB_LO);
2404 stats->rx65to127octets_gb +=
2405 xgbe_mmc_read(pdata, MMC_RX65TO127OCTETS_GB_LO);
2407 stats->rx128to255octets_gb +=
2408 xgbe_mmc_read(pdata, MMC_RX128TO255OCTETS_GB_LO);
2410 stats->rx256to511octets_gb +=
2411 xgbe_mmc_read(pdata, MMC_RX256TO511OCTETS_GB_LO);
2413 stats->rx512to1023octets_gb +=
2414 xgbe_mmc_read(pdata, MMC_RX512TO1023OCTETS_GB_LO);
2416 stats->rx1024tomaxoctets_gb +=
2417 xgbe_mmc_read(pdata, MMC_RX1024TOMAXOCTETS_GB_LO);
2419 stats->rxunicastframes_g +=
2420 xgbe_mmc_read(pdata, MMC_RXUNICASTFRAMES_G_LO);
2422 stats->rxlengtherror +=
2423 xgbe_mmc_read(pdata, MMC_RXLENGTHERROR_LO);
2425 stats->rxoutofrangetype +=
2426 xgbe_mmc_read(pdata, MMC_RXOUTOFRANGETYPE_LO);
2428 stats->rxpauseframes +=
2429 xgbe_mmc_read(pdata, MMC_RXPAUSEFRAMES_LO);
2431 stats->rxfifooverflow +=
2432 xgbe_mmc_read(pdata, MMC_RXFIFOOVERFLOW_LO);
2434 stats->rxvlanframes_gb +=
2435 xgbe_mmc_read(pdata, MMC_RXVLANFRAMES_GB_LO);
2437 stats->rxwatchdogerror +=
2438 xgbe_mmc_read(pdata, MMC_RXWATCHDOGERROR);
2440 /* Un-freeze counters */
2441 XGMAC_IOWRITE_BITS(pdata, MMC_CR, MCF, 0);
2444 static void xgbe_config_mmc(struct xgbe_prv_data *pdata)
2446 /* Set counters to reset on read */
2447 XGMAC_IOWRITE_BITS(pdata, MMC_CR, ROR, 1);
2449 /* Reset the counters */
2450 XGMAC_IOWRITE_BITS(pdata, MMC_CR, CR, 1);
2453 static void xgbe_enable_tx(struct xgbe_prv_data *pdata)
2455 struct xgbe_channel *channel;
2458 /* Enable each Tx DMA channel */
2459 channel = pdata->channel;
2460 for (i = 0; i < pdata->channel_count; i++, channel++) {
2461 if (!channel->tx_ring)
2464 XGMAC_DMA_IOWRITE_BITS(channel, DMA_CH_TCR, ST, 1);
2467 /* Enable each Tx queue */
2468 for (i = 0; i < pdata->tx_q_count; i++)
2469 XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_TQOMR, TXQEN,
2473 XGMAC_IOWRITE_BITS(pdata, MAC_TCR, TE, 1);
2476 static void xgbe_disable_tx(struct xgbe_prv_data *pdata)
2478 struct xgbe_channel *channel;
2481 /* Disable MAC Tx */
2482 XGMAC_IOWRITE_BITS(pdata, MAC_TCR, TE, 0);
2484 /* Disable each Tx queue */
2485 for (i = 0; i < pdata->tx_q_count; i++)
2486 XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_TQOMR, TXQEN, 0);
2488 /* Disable each Tx DMA channel */
2489 channel = pdata->channel;
2490 for (i = 0; i < pdata->channel_count; i++, channel++) {
2491 if (!channel->tx_ring)
2494 XGMAC_DMA_IOWRITE_BITS(channel, DMA_CH_TCR, ST, 0);
2498 static void xgbe_enable_rx(struct xgbe_prv_data *pdata)
2500 struct xgbe_channel *channel;
2501 unsigned int reg_val, i;
2503 /* Enable each Rx DMA channel */
2504 channel = pdata->channel;
2505 for (i = 0; i < pdata->channel_count; i++, channel++) {
2506 if (!channel->rx_ring)
2509 XGMAC_DMA_IOWRITE_BITS(channel, DMA_CH_RCR, SR, 1);
2512 /* Enable each Rx queue */
2514 for (i = 0; i < pdata->rx_q_count; i++)
2515 reg_val |= (0x02 << (i << 1));
2516 XGMAC_IOWRITE(pdata, MAC_RQC0R, reg_val);
2519 XGMAC_IOWRITE_BITS(pdata, MAC_RCR, DCRCC, 1);
2520 XGMAC_IOWRITE_BITS(pdata, MAC_RCR, CST, 1);
2521 XGMAC_IOWRITE_BITS(pdata, MAC_RCR, ACS, 1);
2522 XGMAC_IOWRITE_BITS(pdata, MAC_RCR, RE, 1);
2525 static void xgbe_disable_rx(struct xgbe_prv_data *pdata)
2527 struct xgbe_channel *channel;
2530 /* Disable MAC Rx */
2531 XGMAC_IOWRITE_BITS(pdata, MAC_RCR, DCRCC, 0);
2532 XGMAC_IOWRITE_BITS(pdata, MAC_RCR, CST, 0);
2533 XGMAC_IOWRITE_BITS(pdata, MAC_RCR, ACS, 0);
2534 XGMAC_IOWRITE_BITS(pdata, MAC_RCR, RE, 0);
2536 /* Disable each Rx queue */
2537 XGMAC_IOWRITE(pdata, MAC_RQC0R, 0);
2539 /* Disable each Rx DMA channel */
2540 channel = pdata->channel;
2541 for (i = 0; i < pdata->channel_count; i++, channel++) {
2542 if (!channel->rx_ring)
2545 XGMAC_DMA_IOWRITE_BITS(channel, DMA_CH_RCR, SR, 0);
2549 static void xgbe_powerup_tx(struct xgbe_prv_data *pdata)
2551 struct xgbe_channel *channel;
2554 /* Enable each Tx DMA channel */
2555 channel = pdata->channel;
2556 for (i = 0; i < pdata->channel_count; i++, channel++) {
2557 if (!channel->tx_ring)
2560 XGMAC_DMA_IOWRITE_BITS(channel, DMA_CH_TCR, ST, 1);
2564 XGMAC_IOWRITE_BITS(pdata, MAC_TCR, TE, 1);
2567 static void xgbe_powerdown_tx(struct xgbe_prv_data *pdata)
2569 struct xgbe_channel *channel;
2572 /* Disable MAC Tx */
2573 XGMAC_IOWRITE_BITS(pdata, MAC_TCR, TE, 0);
2575 /* Disable each Tx DMA channel */
2576 channel = pdata->channel;
2577 for (i = 0; i < pdata->channel_count; i++, channel++) {
2578 if (!channel->tx_ring)
2581 XGMAC_DMA_IOWRITE_BITS(channel, DMA_CH_TCR, ST, 0);
2585 static void xgbe_powerup_rx(struct xgbe_prv_data *pdata)
2587 struct xgbe_channel *channel;
2590 /* Enable each Rx DMA channel */
2591 channel = pdata->channel;
2592 for (i = 0; i < pdata->channel_count; i++, channel++) {
2593 if (!channel->rx_ring)
2596 XGMAC_DMA_IOWRITE_BITS(channel, DMA_CH_RCR, SR, 1);
2600 static void xgbe_powerdown_rx(struct xgbe_prv_data *pdata)
2602 struct xgbe_channel *channel;
2605 /* Disable each Rx DMA channel */
2606 channel = pdata->channel;
2607 for (i = 0; i < pdata->channel_count; i++, channel++) {
2608 if (!channel->rx_ring)
2611 XGMAC_DMA_IOWRITE_BITS(channel, DMA_CH_RCR, SR, 0);
2615 static int xgbe_init(struct xgbe_prv_data *pdata)
2617 struct xgbe_desc_if *desc_if = &pdata->desc_if;
2620 DBGPR("-->xgbe_init\n");
2622 /* Flush Tx queues */
2623 ret = xgbe_flush_tx_queues(pdata);
2628 * Initialize DMA related features
2630 xgbe_config_dma_bus(pdata);
2631 xgbe_config_dma_cache(pdata);
2632 xgbe_config_osp_mode(pdata);
2633 xgbe_config_pblx8(pdata);
2634 xgbe_config_tx_pbl_val(pdata);
2635 xgbe_config_rx_pbl_val(pdata);
2636 xgbe_config_rx_coalesce(pdata);
2637 xgbe_config_tx_coalesce(pdata);
2638 xgbe_config_rx_buffer_size(pdata);
2639 xgbe_config_tso_mode(pdata);
2640 xgbe_config_sph_mode(pdata);
2641 xgbe_config_rss(pdata);
2642 desc_if->wrapper_tx_desc_init(pdata);
2643 desc_if->wrapper_rx_desc_init(pdata);
2644 xgbe_enable_dma_interrupts(pdata);
2647 * Initialize MTL related features
2649 xgbe_config_mtl_mode(pdata);
2650 xgbe_config_queue_mapping(pdata);
2651 xgbe_config_tsf_mode(pdata, pdata->tx_sf_mode);
2652 xgbe_config_rsf_mode(pdata, pdata->rx_sf_mode);
2653 xgbe_config_tx_threshold(pdata, pdata->tx_threshold);
2654 xgbe_config_rx_threshold(pdata, pdata->rx_threshold);
2655 xgbe_config_tx_fifo_size(pdata);
2656 xgbe_config_rx_fifo_size(pdata);
2657 xgbe_config_flow_control_threshold(pdata);
2658 /*TODO: Error Packet and undersized good Packet forwarding enable
2661 xgbe_config_dcb_tc(pdata);
2662 xgbe_config_dcb_pfc(pdata);
2663 xgbe_enable_mtl_interrupts(pdata);
2666 * Initialize MAC related features
2668 xgbe_config_mac_address(pdata);
2669 xgbe_config_jumbo_enable(pdata);
2670 xgbe_config_flow_control(pdata);
2671 xgbe_config_checksum_offload(pdata);
2672 xgbe_config_vlan_support(pdata);
2673 xgbe_config_mmc(pdata);
2674 xgbe_enable_mac_interrupts(pdata);
2676 DBGPR("<--xgbe_init\n");
2681 void xgbe_init_function_ptrs_dev(struct xgbe_hw_if *hw_if)
2683 DBGPR("-->xgbe_init_function_ptrs\n");
2685 hw_if->tx_complete = xgbe_tx_complete;
2687 hw_if->set_promiscuous_mode = xgbe_set_promiscuous_mode;
2688 hw_if->set_all_multicast_mode = xgbe_set_all_multicast_mode;
2689 hw_if->add_mac_addresses = xgbe_add_mac_addresses;
2690 hw_if->set_mac_address = xgbe_set_mac_address;
2692 hw_if->enable_rx_csum = xgbe_enable_rx_csum;
2693 hw_if->disable_rx_csum = xgbe_disable_rx_csum;
2695 hw_if->enable_rx_vlan_stripping = xgbe_enable_rx_vlan_stripping;
2696 hw_if->disable_rx_vlan_stripping = xgbe_disable_rx_vlan_stripping;
2697 hw_if->enable_rx_vlan_filtering = xgbe_enable_rx_vlan_filtering;
2698 hw_if->disable_rx_vlan_filtering = xgbe_disable_rx_vlan_filtering;
2699 hw_if->update_vlan_hash_table = xgbe_update_vlan_hash_table;
2701 hw_if->read_mmd_regs = xgbe_read_mmd_regs;
2702 hw_if->write_mmd_regs = xgbe_write_mmd_regs;
2704 hw_if->set_gmii_speed = xgbe_set_gmii_speed;
2705 hw_if->set_gmii_2500_speed = xgbe_set_gmii_2500_speed;
2706 hw_if->set_xgmii_speed = xgbe_set_xgmii_speed;
2708 hw_if->enable_tx = xgbe_enable_tx;
2709 hw_if->disable_tx = xgbe_disable_tx;
2710 hw_if->enable_rx = xgbe_enable_rx;
2711 hw_if->disable_rx = xgbe_disable_rx;
2713 hw_if->powerup_tx = xgbe_powerup_tx;
2714 hw_if->powerdown_tx = xgbe_powerdown_tx;
2715 hw_if->powerup_rx = xgbe_powerup_rx;
2716 hw_if->powerdown_rx = xgbe_powerdown_rx;
2718 hw_if->dev_xmit = xgbe_dev_xmit;
2719 hw_if->dev_read = xgbe_dev_read;
2720 hw_if->enable_int = xgbe_enable_int;
2721 hw_if->disable_int = xgbe_disable_int;
2722 hw_if->init = xgbe_init;
2723 hw_if->exit = xgbe_exit;
2725 /* Descriptor related Sequences have to be initialized here */
2726 hw_if->tx_desc_init = xgbe_tx_desc_init;
2727 hw_if->rx_desc_init = xgbe_rx_desc_init;
2728 hw_if->tx_desc_reset = xgbe_tx_desc_reset;
2729 hw_if->rx_desc_reset = xgbe_rx_desc_reset;
2730 hw_if->is_last_desc = xgbe_is_last_desc;
2731 hw_if->is_context_desc = xgbe_is_context_desc;
2734 hw_if->config_tx_flow_control = xgbe_config_tx_flow_control;
2735 hw_if->config_rx_flow_control = xgbe_config_rx_flow_control;
2737 /* For RX coalescing */
2738 hw_if->config_rx_coalesce = xgbe_config_rx_coalesce;
2739 hw_if->config_tx_coalesce = xgbe_config_tx_coalesce;
2740 hw_if->usec_to_riwt = xgbe_usec_to_riwt;
2741 hw_if->riwt_to_usec = xgbe_riwt_to_usec;
2743 /* For RX and TX threshold config */
2744 hw_if->config_rx_threshold = xgbe_config_rx_threshold;
2745 hw_if->config_tx_threshold = xgbe_config_tx_threshold;
2747 /* For RX and TX Store and Forward Mode config */
2748 hw_if->config_rsf_mode = xgbe_config_rsf_mode;
2749 hw_if->config_tsf_mode = xgbe_config_tsf_mode;
2751 /* For TX DMA Operating on Second Frame config */
2752 hw_if->config_osp_mode = xgbe_config_osp_mode;
2754 /* For RX and TX PBL config */
2755 hw_if->config_rx_pbl_val = xgbe_config_rx_pbl_val;
2756 hw_if->get_rx_pbl_val = xgbe_get_rx_pbl_val;
2757 hw_if->config_tx_pbl_val = xgbe_config_tx_pbl_val;
2758 hw_if->get_tx_pbl_val = xgbe_get_tx_pbl_val;
2759 hw_if->config_pblx8 = xgbe_config_pblx8;
2761 /* For MMC statistics support */
2762 hw_if->tx_mmc_int = xgbe_tx_mmc_int;
2763 hw_if->rx_mmc_int = xgbe_rx_mmc_int;
2764 hw_if->read_mmc_stats = xgbe_read_mmc_stats;
2766 /* For PTP config */
2767 hw_if->config_tstamp = xgbe_config_tstamp;
2768 hw_if->update_tstamp_addend = xgbe_update_tstamp_addend;
2769 hw_if->set_tstamp_time = xgbe_set_tstamp_time;
2770 hw_if->get_tstamp_time = xgbe_get_tstamp_time;
2771 hw_if->get_tx_tstamp = xgbe_get_tx_tstamp;
2773 /* For Data Center Bridging config */
2774 hw_if->config_dcb_tc = xgbe_config_dcb_tc;
2775 hw_if->config_dcb_pfc = xgbe_config_dcb_pfc;
2777 /* For Receive Side Scaling */
2778 hw_if->enable_rss = xgbe_enable_rss;
2779 hw_if->disable_rss = xgbe_disable_rss;
2780 hw_if->set_rss_hash_key = xgbe_set_rss_hash_key;
2781 hw_if->set_rss_lookup_table = xgbe_set_rss_lookup_table;
2783 DBGPR("<--xgbe_init_function_ptrs\n");