~hc/RK356X_SDK_RELEASE.git

..	..	@@ -1,20 +1,10 @@
	1	+// SPDX-License-Identifier: GPL-2.0-only
1	2	/*******************************************************************************
2	3	This is the driver for the ST MAC 10/100/1000 on-chip Ethernet controllers.
3	4	ST Ethernet IPs are built around a Synopsys IP Core.
4	5
5	6	Copyright(C) 2007-2011 STMicroelectronics Ltd
6	7
7		- This program is free software; you can redistribute it and/or modify it
8		- under the terms and conditions of the GNU General Public License,
9		- version 2, as published by the Free Software Foundation.
10		-
11		- This program is distributed in the hope it will be useful, but WITHOUT
12		- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13		- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14		- more details.
15		-
16		- The full GNU General Public License is included in this distribution in
17		- the file called "COPYING".
18	8
19	9	Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
20	10
..	..	@@ -38,6 +28,7 @@
38	28	#include <linux/if_vlan.h>
39	29	#include <linux/dma-mapping.h>
40	30	#include <linux/slab.h>
	31	+#include <linux/pm_runtime.h>
41	32	#include <linux/prefetch.h>
42	33	#include <linux/pinctrl/consumer.h>
43	34	#ifdef CONFIG_DEBUG_FS
..	..	@@ -45,6 +36,7 @@
45	36	#include <linux/seq_file.h>
46	37	#endif /* CONFIG_DEBUG_FS */
47	38	#include <linux/net_tstamp.h>
	39	+#include <linux/phylink.h>
48	40	#include <linux/udp.h>
49	41	#include <net/pkt_cls.h>
50	42	#include "stmmac_ptp.h"
..	..	@@ -54,6 +46,13 @@
54	46	#include "dwmac1000.h"
55	47	#include "dwxgmac2.h"
56	48	#include "hwif.h"
	49	+
	50	+/* As long as the interface is active, we keep the timestamping counter enabled
	51	+ * with fine resolution and binary rollover. This avoid non-monotonic behavior
	52	+ * (clock jumps) when changing timestamping settings at runtime.
	53	+ */
	54	+#define STMMAC_HWTS_ACTIVE (PTP_TCR_TSENA \| PTP_TCR_TSCFUPDT \| \
	55	+ PTP_TCR_TSCTRLSSR)
57	56
58	57	#define STMMAC_ALIGN(x) ALIGN(ALIGN(x, SMP_CACHE_BYTES), 16)
59	58	#define TSO_MAX_BUFF_SIZE (SZ_16K - 1)
..	..	@@ -72,10 +71,10 @@
72	71	module_param(phyaddr, int, 0444);
73	72	MODULE_PARM_DESC(phyaddr, "Physical device address");
74	73
75		-#define STMMAC_TX_THRESH (DMA_TX_SIZE / 4)
76		-#define STMMAC_RX_THRESH (DMA_RX_SIZE / 4)
	74	+#define STMMAC_TX_THRESH(x) ((x)->dma_tx_size / 4)
	75	+#define STMMAC_RX_THRESH(x) ((x)->dma_rx_size / 4)
77	76
78		-static int flow_ctrl = FLOW_OFF;
	77	+static int flow_ctrl = FLOW_AUTO;
79	78	module_param(flow_ctrl, int, 0644);
80	79	MODULE_PARM_DESC(flow_ctrl, "Flow control ability [on/off]");
81	80
..	..	@@ -103,7 +102,7 @@
103	102	static int eee_timer = STMMAC_DEFAULT_LPI_TIMER;
104	103	module_param(eee_timer, int, 0644);
105	104	MODULE_PARM_DESC(eee_timer, "LPI tx expiration time in msec");
106		-#define STMMAC_LPI_T(x) (jiffies + msecs_to_jiffies(x))
	105	+#define STMMAC_LPI_T(x) (jiffies + usecs_to_jiffies(x))
107	106
108	107	/* By default the driver will use the ring mode to manage tx and rx descriptors,
109	108	* but allow user to force to use the chain instead of the ring
..	..	@@ -115,11 +114,34 @@
115	114	static irqreturn_t stmmac_interrupt(int irq, void *dev_id);
116	115
117	116	#ifdef CONFIG_DEBUG_FS
118		-static int stmmac_init_fs(struct net_device *dev);
	117	+static const struct net_device_ops stmmac_netdev_ops;
	118	+static void stmmac_init_fs(struct net_device *dev);
119	119	static void stmmac_exit_fs(struct net_device *dev);
120	120	#endif
121	121
122	122	#define STMMAC_COAL_TIMER(x) (jiffies + usecs_to_jiffies(x))
	123	+
	124	+int stmmac_bus_clks_config(struct stmmac_priv *priv, bool enabled)
	125	+{
	126	+ int ret = 0;
	127	+
	128	+ if (enabled) {
	129	+ ret = clk_prepare_enable(priv->plat->stmmac_clk);
	130	+ if (ret)
	131	+ return ret;
	132	+ ret = clk_prepare_enable(priv->plat->pclk);
	133	+ if (ret) {
	134	+ clk_disable_unprepare(priv->plat->stmmac_clk);
	135	+ return ret;
	136	+ }
	137	+ } else {
	138	+ clk_disable_unprepare(priv->plat->stmmac_clk);
	139	+ clk_disable_unprepare(priv->plat->pclk);
	140	+ }
	141	+
	142	+ return ret;
	143	+}
	144	+EXPORT_SYMBOL_GPL(stmmac_bus_clks_config);
123	145
124	146	/**
125	147	* stmmac_verify_args - verify the driver parameters.
..	..	@@ -156,7 +178,10 @@
156	178	for (queue = 0; queue < maxq; queue++) {
157	179	struct stmmac_channel *ch = &priv->channel[queue];
158	180
159		- napi_disable(&ch->napi);
	181	+ if (queue < rx_queues_cnt)
	182	+ napi_disable(&ch->rx_napi);
	183	+ if (queue < tx_queues_cnt)
	184	+ napi_disable(&ch->tx_napi);
160	185	}
161	186	}
162	187
..	..	@@ -174,7 +199,10 @@
174	199	for (queue = 0; queue < maxq; queue++) {
175	200	struct stmmac_channel *ch = &priv->channel[queue];
176	201
177		- napi_enable(&ch->napi);
	202	+ if (queue < rx_queues_cnt)
	203	+ napi_enable(&ch->rx_napi);
	204	+ if (queue < tx_queues_cnt)
	205	+ napi_enable(&ch->tx_napi);
178	206	}
179	207	}
180	208
..	..	@@ -273,7 +301,7 @@
273	301	if (tx_q->dirty_tx > tx_q->cur_tx)
274	302	avail = tx_q->dirty_tx - tx_q->cur_tx - 1;
275	303	else
276		- avail = DMA_TX_SIZE - tx_q->cur_tx + tx_q->dirty_tx - 1;
	304	+ avail = priv->dma_tx_size - tx_q->cur_tx + tx_q->dirty_tx - 1;
277	305
278	306	return avail;
279	307	}
..	..	@@ -291,24 +319,9 @@
291	319	if (rx_q->dirty_rx <= rx_q->cur_rx)
292	320	dirty = rx_q->cur_rx - rx_q->dirty_rx;
293	321	else
294		- dirty = DMA_RX_SIZE - rx_q->dirty_rx + rx_q->cur_rx;
	322	+ dirty = priv->dma_rx_size - rx_q->dirty_rx + rx_q->cur_rx;
295	323
296	324	return dirty;
297		-}
298		-
299		-/**
300		- * stmmac_hw_fix_mac_speed - callback for speed selection
301		- * @priv: driver private structure
302		- * Description: on some platforms (e.g. ST), some HW system configuration
303		- * registers have to be set according to the link speed negotiated.
304		- */
305		-static inline void stmmac_hw_fix_mac_speed(struct stmmac_priv *priv)
306		-{
307		- struct net_device *ndev = priv->dev;
308		- struct phy_device *phydev = ndev->phydev;
309		-
310		- if (likely(priv->plat->fix_mac_speed))
311		- priv->plat->fix_mac_speed(priv->plat->bsp_priv, phydev->speed);
312	325	}
313	326
314	327	/**
..	..	@@ -351,7 +364,7 @@
351	364
352	365	/**
353	366	* stmmac_eee_ctrl_timer - EEE TX SW timer.
354		- * @arg : data hook
	367	+ * @t: timer_list struct containing private info
355	368	* Description:
356	369	* if there is no data transfer and if we are not in LPI state,
357	370	* then MAC Transmitter can be moved to LPI state.
..	..	@@ -361,7 +374,7 @@
361	374	struct stmmac_priv *priv = from_timer(priv, t, eee_ctrl_timer);
362	375
363	376	stmmac_enable_eee_mode(priv);
364		- mod_timer(&priv->eee_ctrl_timer, STMMAC_LPI_T(eee_timer));
	377	+ mod_timer(&priv->eee_ctrl_timer, STMMAC_LPI_T(priv->tx_lpi_timer));
365	378	}
366	379
367	380	/**
..	..	@@ -374,67 +387,43 @@
374	387	*/
375	388	bool stmmac_eee_init(struct stmmac_priv *priv)
376	389	{
377		- struct net_device *ndev = priv->dev;
378		- int interface = priv->plat->interface;
379		- bool ret = false;
380		-
381		- if ((interface != PHY_INTERFACE_MODE_MII) &&
382		- (interface != PHY_INTERFACE_MODE_GMII) &&
383		- !phy_interface_mode_is_rgmii(interface))
384		- goto out;
	390	+ int eee_tw_timer = priv->eee_tw_timer;
385	391
386	392	/* Using PCS we cannot dial with the phy registers at this stage
387	393	* so we do not support extra feature like EEE.
388	394	*/
389		- if ((priv->hw->pcs == STMMAC_PCS_RGMII) \|\|
390		- (priv->hw->pcs == STMMAC_PCS_TBI) \|\|
391		- (priv->hw->pcs == STMMAC_PCS_RTBI))
392		- goto out;
	395	+ if (priv->hw->pcs == STMMAC_PCS_TBI \|\|
	396	+ priv->hw->pcs == STMMAC_PCS_RTBI)
	397	+ return false;
393	398
394		- /* MAC core supports the EEE feature. */
395		- if (priv->dma_cap.eee) {
396		- int tx_lpi_timer = priv->tx_lpi_timer;
	399	+ /* Check if MAC core supports the EEE feature. */
	400	+ if (!priv->dma_cap.eee)
	401	+ return false;
397	402
398		- /* Check if the PHY supports EEE */
399		- if (phy_init_eee(ndev->phydev, 1)) {
400		- /* To manage at run-time if the EEE cannot be supported
401		- * anymore (for example because the lp caps have been
402		- * changed).
403		- * In that case the driver disable own timers.
404		- */
405		- mutex_lock(&priv->lock);
406		- if (priv->eee_active) {
407		- netdev_dbg(priv->dev, "disable EEE\n");
408		- del_timer_sync(&priv->eee_ctrl_timer);
409		- stmmac_set_eee_timer(priv, priv->hw, 0,
410		- tx_lpi_timer);
411		- }
412		- priv->eee_active = 0;
413		- mutex_unlock(&priv->lock);
414		- goto out;
	403	+ mutex_lock(&priv->lock);
	404	+
	405	+ /* Check if it needs to be deactivated */
	406	+ if (!priv->eee_active) {
	407	+ if (priv->eee_enabled) {
	408	+ netdev_dbg(priv->dev, "disable EEE\n");
	409	+ del_timer_sync(&priv->eee_ctrl_timer);
	410	+ stmmac_set_eee_timer(priv, priv->hw, 0, eee_tw_timer);
415	411	}
416		- /* Activate the EEE and start timers */
417		- mutex_lock(&priv->lock);
418		- if (!priv->eee_active) {
419		- priv->eee_active = 1;
420		- timer_setup(&priv->eee_ctrl_timer,
421		- stmmac_eee_ctrl_timer, 0);
422		- mod_timer(&priv->eee_ctrl_timer,
423		- STMMAC_LPI_T(eee_timer));
424		-
425		- stmmac_set_eee_timer(priv, priv->hw,
426		- STMMAC_DEFAULT_LIT_LS, tx_lpi_timer);
427		- }
428		- /* Set HW EEE according to the speed */
429		- stmmac_set_eee_pls(priv, priv->hw, ndev->phydev->link);
430		-
431		- ret = true;
432	412	mutex_unlock(&priv->lock);
433		-
434		- netdev_dbg(priv->dev, "Energy-Efficient Ethernet initialized\n");
	413	+ return false;
435	414	}
436		-out:
437		- return ret;
	415	+
	416	+ if (priv->eee_active && !priv->eee_enabled) {
	417	+ timer_setup(&priv->eee_ctrl_timer, stmmac_eee_ctrl_timer, 0);
	418	+ stmmac_set_eee_timer(priv, priv->hw, STMMAC_DEFAULT_LIT_LS,
	419	+ eee_tw_timer);
	420	+ }
	421	+
	422	+ mod_timer(&priv->eee_ctrl_timer, STMMAC_LPI_T(priv->tx_lpi_timer));
	423	+
	424	+ mutex_unlock(&priv->lock);
	425	+ netdev_dbg(priv->dev, "Energy-Efficient Ethernet initialized\n");
	426	+ return true;
438	427	}
439	428
440	429	/* stmmac_get_tx_hwtstamp - get HW TX timestamps
..	..	@@ -449,6 +438,7 @@
449	438	struct dma_desc p, struct sk_buff skb)
450	439	{
451	440	struct skb_shared_hwtstamps shhwtstamp;
	441	+ bool found = false;
452	442	u64 ns = 0;
453	443
454	444	if (!priv->hwts_tx_en)
..	..	@@ -460,9 +450,13 @@
460	450
461	451	/* check tx tstamp status */
462	452	if (stmmac_get_tx_timestamp_status(priv, p)) {
463		- /* get the valid tstamp */
464	453	stmmac_get_timestamp(priv, p, priv->adv_ts, &ns);
	454	+ found = true;
	455	+ } else if (!stmmac_get_mac_tx_timestamp(priv, priv->hw, &ns)) {
	456	+ found = true;
	457	+ }
465	458
	459	+ if (found) {
466	460	memset(&shhwtstamp, 0, sizeof(struct skb_shared_hwtstamps));
467	461	shhwtstamp.hwtstamp = ns_to_ktime(ns);
468	462
..	..	@@ -470,8 +464,6 @@
470	464	/* pass tstamp to stack */
471	465	skb_tstamp_tx(skb, &shhwtstamp);
472	466	}
473		-
474		- return;
475	467	}
476	468
477	469	/* stmmac_get_rx_hwtstamp - get HW RX timestamps
..	..	@@ -508,7 +500,6 @@
508	500	}
509	501	}
510	502
511		-#ifdef CONFIG_STMMAC_PTP
512	503	/**
513	504	* stmmac_hwtstamp_set - control hardware timestamping.
514	505	* @dev: device pointer.
..	..	@@ -524,8 +515,6 @@
524	515	{
525	516	struct stmmac_priv *priv = netdev_priv(dev);
526	517	struct hwtstamp_config config;
527		- struct timespec64 now;
528		- u64 temp = 0;
529	518	u32 ptp_v2 = 0;
530	519	u32 tstamp_all = 0;
531	520	u32 ptp_over_ipv4_udp = 0;
..	..	@@ -534,11 +523,6 @@
534	523	u32 snap_type_sel = 0;
535	524	u32 ts_master_en = 0;
536	525	u32 ts_event_en = 0;
537		- u32 sec_inc = 0;
538		- u32 value = 0;
539		- bool xmac;
540		-
541		- xmac = priv->plat->has_gmac4 \|\| priv->plat->has_xgmac;
542	526
543	527	if (!(priv->dma_cap.time_stamp \|\| priv->adv_ts)) {
544	528	netdev_alert(priv->dev, "No support for HW time stamping\n");
..	..	@@ -644,7 +628,8 @@
644	628	config.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
645	629	ptp_v2 = PTP_TCR_TSVER2ENA;
646	630	snap_type_sel = PTP_TCR_SNAPTYPSEL_1;
647		- ts_event_en = PTP_TCR_TSEVNTENA;
	631	+ if (priv->synopsys_id < DWMAC_CORE_4_10)
	632	+ ts_event_en = PTP_TCR_TSEVNTENA;
648	633	ptp_over_ipv4_udp = PTP_TCR_TSIPV4ENA;
649	634	ptp_over_ipv6_udp = PTP_TCR_TSIPV6ENA;
650	635	ptp_over_ethernet = PTP_TCR_TSIPENA;
..	..	@@ -699,41 +684,16 @@
699	684	priv->hwts_rx_en = ((config.rx_filter == HWTSTAMP_FILTER_NONE) ? 0 : 1);
700	685	priv->hwts_tx_en = config.tx_type == HWTSTAMP_TX_ON;
701	686
702		- if (!priv->hwts_tx_en && !priv->hwts_rx_en)
703		- stmmac_config_hw_tstamping(priv, priv->ptpaddr, 0);
704		- else {
705		- value = (PTP_TCR_TSENA \| PTP_TCR_TSCFUPDT \| PTP_TCR_TSCTRLSSR \|
706		- tstamp_all \| ptp_v2 \| ptp_over_ethernet \|
707		- ptp_over_ipv6_udp \| ptp_over_ipv4_udp \| ts_event_en \|
708		- ts_master_en \| snap_type_sel);
709		- stmmac_config_hw_tstamping(priv, priv->ptpaddr, value);
	687	+ priv->systime_flags = STMMAC_HWTS_ACTIVE;
710	688
711		- /* program Sub Second Increment reg */
712		- stmmac_config_sub_second_increment(priv,
713		- priv->ptpaddr, priv->plat->clk_ptp_rate,
714		- xmac, &sec_inc);
715		- temp = div_u64(1000000000ULL, sec_inc);
716		-
717		- /* Store sub second increment and flags for later use */
718		- priv->sub_second_inc = sec_inc;
719		- priv->systime_flags = value;
720		-
721		- /* calculate default added value:
722		- * formula is :
723		- * addend = (2^32)/freq_div_ratio;
724		- * where, freq_div_ratio = 1e9ns/sec_inc
725		- */
726		- temp = (u64)(temp << 32);
727		- priv->default_addend = div_u64(temp, priv->plat->clk_ptp_rate);
728		- stmmac_config_addend(priv, priv->ptpaddr, priv->default_addend);
729		-
730		- /* initialize system time */
731		- ktime_get_real_ts64(&now);
732		-
733		- /* lower 32 bits of tv_sec are safe until y2106 */
734		- stmmac_init_systime(priv, priv->ptpaddr,
735		- (u32)now.tv_sec, now.tv_nsec);
	689	+ if (priv->hwts_tx_en \|\| priv->hwts_rx_en) {
	690	+ priv->systime_flags \|= tstamp_all \| ptp_v2 \|
	691	+ ptp_over_ethernet \| ptp_over_ipv6_udp \|
	692	+ ptp_over_ipv4_udp \| ts_event_en \|
	693	+ ts_master_en \| snap_type_sel;
736	694	}
	695	+
	696	+ stmmac_config_hw_tstamping(priv, priv->ptpaddr, priv->systime_flags);
737	697
738	698	memcpy(&priv->tstamp_config, &config, sizeof(config));
739	699
..	..	@@ -748,7 +708,7 @@
748	708	* a proprietary structure used to pass information to the driver.
749	709	* Description:
750	710	* This function obtain the current hardware timestamping settings
751		- as requested.
	711	+ * as requested.
752	712	*/
753	713	static int stmmac_hwtstamp_get(struct net_device dev, struct ifreq ifr)
754	714	{
..	..	@@ -761,7 +721,57 @@
761	721	return copy_to_user(ifr->ifr_data, config,
762	722	sizeof(*config)) ? -EFAULT : 0;
763	723	}
764		-#endif /* CONFIG_STMMAC_PTP */
	724	+
	725	+/**
	726	+ * stmmac_init_tstamp_counter - init hardware timestamping counter
	727	+ * @priv: driver private structure
	728	+ * @systime_flags: timestamping flags
	729	+ * Description:
	730	+ * Initialize hardware counter for packet timestamping.
	731	+ * This is valid as long as the interface is open and not suspended.
	732	+ * Will be rerun after resuming from suspend, case in which the timestamping
	733	+ * flags updated by stmmac_hwtstamp_set() also need to be restored.
	734	+ */
	735	+int stmmac_init_tstamp_counter(struct stmmac_priv *priv, u32 systime_flags)
	736	+{
	737	+ bool xmac = priv->plat->has_gmac4 \|\| priv->plat->has_xgmac;
	738	+ struct timespec64 now;
	739	+ u32 sec_inc = 0;
	740	+ u64 temp = 0;
	741	+
	742	+ if (!(priv->dma_cap.time_stamp \|\| priv->dma_cap.atime_stamp))
	743	+ return -EOPNOTSUPP;
	744	+
	745	+ stmmac_config_hw_tstamping(priv, priv->ptpaddr, systime_flags);
	746	+ priv->systime_flags = systime_flags;
	747	+
	748	+ /* program Sub Second Increment reg */
	749	+ stmmac_config_sub_second_increment(priv, priv->ptpaddr,
	750	+ priv->plat->clk_ptp_rate,
	751	+ xmac, &sec_inc);
	752	+ temp = div_u64(1000000000ULL, sec_inc);
	753	+
	754	+ /* Store sub second increment for later use */
	755	+ priv->sub_second_inc = sec_inc;
	756	+
	757	+ /* calculate default added value:
	758	+ * formula is :
	759	+ * addend = (2^32)/freq_div_ratio;
	760	+ * where, freq_div_ratio = 1e9ns/sec_inc
	761	+ */
	762	+ temp = (u64)(temp << 32);
	763	+ priv->default_addend = div_u64(temp, priv->plat->clk_ptp_rate);
	764	+ stmmac_config_addend(priv, priv->ptpaddr, priv->default_addend);
	765	+
	766	+ /* initialize system time */
	767	+ ktime_get_real_ts64(&now);
	768	+
	769	+ /* lower 32 bits of tv_sec are safe until y2106 */
	770	+ stmmac_init_systime(priv, priv->ptpaddr, (u32)now.tv_sec, now.tv_nsec);
	771	+
	772	+ return 0;
	773	+}
	774	+EXPORT_SYMBOL_GPL(stmmac_init_tstamp_counter);
765	775
766	776	/**
767	777	* stmmac_init_ptp - init PTP
..	..	@@ -773,9 +783,11 @@
773	783	static int stmmac_init_ptp(struct stmmac_priv *priv)
774	784	{
775	785	bool xmac = priv->plat->has_gmac4 \|\| priv->plat->has_xgmac;
	786	+ int ret;
776	787
777		- if (!(priv->dma_cap.time_stamp \|\| priv->dma_cap.atime_stamp))
778		- return -EOPNOTSUPP;
	788	+ ret = stmmac_init_tstamp_counter(priv, STMMAC_HWTS_ACTIVE);
	789	+ if (ret)
	790	+ return ret;
779	791
780	792	priv->adv_ts = 0;
781	793	/* Check if adv_ts can be enabled for dwmac 4.x / xgmac core */
..	..	@@ -795,121 +807,274 @@
795	807	priv->hwts_tx_en = 0;
796	808	priv->hwts_rx_en = 0;
797	809
798		- stmmac_ptp_register(priv);
799		-
800	810	return 0;
801	811	}
802	812
803	813	static void stmmac_release_ptp(struct stmmac_priv *priv)
804	814	{
805		- if (priv->plat->clk_ptp_ref && IS_ENABLED(CONFIG_STMMAC_PTP))
806		- clk_disable_unprepare(priv->plat->clk_ptp_ref);
	815	+ clk_disable_unprepare(priv->plat->clk_ptp_ref);
807	816	stmmac_ptp_unregister(priv);
808	817	}
809	818
810	819	/**
811	820	* stmmac_mac_flow_ctrl - Configure flow control in all queues
812	821	* @priv: driver private structure
	822	+ * @duplex: duplex passed to the next function
813	823	* Description: It is used for configuring the flow control in all queues
814	824	*/
815	825	static void stmmac_mac_flow_ctrl(struct stmmac_priv *priv, u32 duplex)
816	826	{
817	827	u32 tx_cnt = priv->plat->tx_queues_to_use;
818	828
819		- stmmac_flow_ctrl(priv, priv->hw, duplex, priv->flow_ctrl,
820		- priv->pause, tx_cnt);
	829	+ stmmac_flow_ctrl(priv, priv->hw, duplex, priv->flow_ctrl & priv->plat->flow_ctrl,
	830	+ priv->pause, tx_cnt);
821	831	}
822	832
823		-/**
824		- * stmmac_adjust_link - adjusts the link parameters
825		- * @dev: net device structure
826		- * Description: this is the helper called by the physical abstraction layer
827		- * drivers to communicate the phy link status. According the speed and duplex
828		- * this driver can invoke registered glue-logic as well.
829		- * It also invoke the eee initialization because it could happen when switch
830		- * on different networks (that are eee capable).
831		- */
832		-static void stmmac_adjust_link(struct net_device *dev)
	833	+static void stmmac_validate(struct phylink_config *config,
	834	+ unsigned long *supported,
	835	+ struct phylink_link_state *state)
833	836	{
834		- struct stmmac_priv *priv = netdev_priv(dev);
835		- struct phy_device *phydev = dev->phydev;
836		- bool new_state = false;
	837	+ struct stmmac_priv *priv = netdev_priv(to_net_dev(config->dev));
	838	+ __ETHTOOL_DECLARE_LINK_MODE_MASK(mac_supported) = { 0, };
	839	+ __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
	840	+ int tx_cnt = priv->plat->tx_queues_to_use;
	841	+ int max_speed = priv->plat->max_speed;
837	842
838		- if (!phydev)
839		- return;
	843	+ phylink_set(mac_supported, 10baseT_Half);
	844	+ phylink_set(mac_supported, 10baseT_Full);
	845	+ phylink_set(mac_supported, 100baseT_Half);
	846	+ phylink_set(mac_supported, 100baseT_Full);
	847	+ phylink_set(mac_supported, 1000baseT_Half);
	848	+ phylink_set(mac_supported, 1000baseT_Full);
	849	+ phylink_set(mac_supported, 1000baseKX_Full);
	850	+ phylink_set(mac_supported, 100baseT1_Full);
	851	+ phylink_set(mac_supported, 1000baseT1_Full);
840	852
841		- mutex_lock(&priv->lock);
	853	+ phylink_set(mac_supported, Autoneg);
	854	+ phylink_set(mac_supported, Pause);
	855	+ phylink_set(mac_supported, Asym_Pause);
	856	+ phylink_set_port_modes(mac_supported);
842	857
843		- if (phydev->link) {
844		- u32 ctrl = readl(priv->ioaddr + MAC_CTRL_REG);
845		-
846		- /* Now we make sure that we can be in full duplex mode.
847		- * If not, we operate in half-duplex mode. */
848		- if (phydev->duplex != priv->oldduplex) {
849		- new_state = true;
850		- if (!phydev->duplex)
851		- ctrl &= ~priv->hw->link.duplex;
852		- else
853		- ctrl \|= priv->hw->link.duplex;
854		- priv->oldduplex = phydev->duplex;
	858	+ /* Cut down 1G if asked to */
	859	+ if ((max_speed > 0) && (max_speed < 1000)) {
	860	+ phylink_set(mask, 1000baseT_Full);
	861	+ phylink_set(mask, 1000baseX_Full);
	862	+ } else if (priv->plat->has_xgmac) {
	863	+ if (!max_speed \|\| (max_speed >= 2500)) {
	864	+ phylink_set(mac_supported, 2500baseT_Full);
	865	+ phylink_set(mac_supported, 2500baseX_Full);
855	866	}
856		- /* Flow Control operation */
857		- if (phydev->pause)
858		- stmmac_mac_flow_ctrl(priv, phydev->duplex);
859		-
860		- if (phydev->speed != priv->speed) {
861		- new_state = true;
862		- ctrl &= ~priv->hw->link.speed_mask;
863		- switch (phydev->speed) {
864		- case SPEED_1000:
865		- ctrl \|= priv->hw->link.speed1000;
866		- break;
867		- case SPEED_100:
868		- ctrl \|= priv->hw->link.speed100;
869		- break;
870		- case SPEED_10:
871		- ctrl \|= priv->hw->link.speed10;
872		- break;
873		- default:
874		- netif_warn(priv, link, priv->dev,
875		- "broken speed: %d\n", phydev->speed);
876		- phydev->speed = SPEED_UNKNOWN;
877		- break;
878		- }
879		- if (phydev->speed != SPEED_UNKNOWN)
880		- stmmac_hw_fix_mac_speed(priv);
881		- priv->speed = phydev->speed;
	867	+ if (!max_speed \|\| (max_speed >= 5000)) {
	868	+ phylink_set(mac_supported, 5000baseT_Full);
882	869	}
883		-
884		- writel(ctrl, priv->ioaddr + MAC_CTRL_REG);
885		-
886		- if (!priv->oldlink) {
887		- new_state = true;
888		- priv->oldlink = true;
	870	+ if (!max_speed \|\| (max_speed >= 10000)) {
	871	+ phylink_set(mac_supported, 10000baseSR_Full);
	872	+ phylink_set(mac_supported, 10000baseLR_Full);
	873	+ phylink_set(mac_supported, 10000baseER_Full);
	874	+ phylink_set(mac_supported, 10000baseLRM_Full);
	875	+ phylink_set(mac_supported, 10000baseT_Full);
	876	+ phylink_set(mac_supported, 10000baseKX4_Full);
	877	+ phylink_set(mac_supported, 10000baseKR_Full);
889	878	}
890		- } else if (priv->oldlink) {
891		- new_state = true;
892		- priv->oldlink = false;
893		- priv->speed = SPEED_UNKNOWN;
894		- priv->oldduplex = DUPLEX_UNKNOWN;
	879	+ if (!max_speed \|\| (max_speed >= 25000)) {
	880	+ phylink_set(mac_supported, 25000baseCR_Full);
	881	+ phylink_set(mac_supported, 25000baseKR_Full);
	882	+ phylink_set(mac_supported, 25000baseSR_Full);
	883	+ }
	884	+ if (!max_speed \|\| (max_speed >= 40000)) {
	885	+ phylink_set(mac_supported, 40000baseKR4_Full);
	886	+ phylink_set(mac_supported, 40000baseCR4_Full);
	887	+ phylink_set(mac_supported, 40000baseSR4_Full);
	888	+ phylink_set(mac_supported, 40000baseLR4_Full);
	889	+ }
	890	+ if (!max_speed \|\| (max_speed >= 50000)) {
	891	+ phylink_set(mac_supported, 50000baseCR2_Full);
	892	+ phylink_set(mac_supported, 50000baseKR2_Full);
	893	+ phylink_set(mac_supported, 50000baseSR2_Full);
	894	+ phylink_set(mac_supported, 50000baseKR_Full);
	895	+ phylink_set(mac_supported, 50000baseSR_Full);
	896	+ phylink_set(mac_supported, 50000baseCR_Full);
	897	+ phylink_set(mac_supported, 50000baseLR_ER_FR_Full);
	898	+ phylink_set(mac_supported, 50000baseDR_Full);
	899	+ }
	900	+ if (!max_speed \|\| (max_speed >= 100000)) {
	901	+ phylink_set(mac_supported, 100000baseKR4_Full);
	902	+ phylink_set(mac_supported, 100000baseSR4_Full);
	903	+ phylink_set(mac_supported, 100000baseCR4_Full);
	904	+ phylink_set(mac_supported, 100000baseLR4_ER4_Full);
	905	+ phylink_set(mac_supported, 100000baseKR2_Full);
	906	+ phylink_set(mac_supported, 100000baseSR2_Full);
	907	+ phylink_set(mac_supported, 100000baseCR2_Full);
	908	+ phylink_set(mac_supported, 100000baseLR2_ER2_FR2_Full);
	909	+ phylink_set(mac_supported, 100000baseDR2_Full);
	910	+ }
895	911	}
896	912
897		- if (new_state && netif_msg_link(priv))
898		- phy_print_status(phydev);
	913	+ /* Half-Duplex can only work with single queue */
	914	+ if (tx_cnt > 1) {
	915	+ phylink_set(mask, 10baseT_Half);
	916	+ phylink_set(mask, 100baseT_Half);
	917	+ phylink_set(mask, 1000baseT_Half);
	918	+ }
899	919
900		- mutex_unlock(&priv->lock);
	920	+ linkmode_and(supported, supported, mac_supported);
	921	+ linkmode_andnot(supported, supported, mask);
901	922
902		- if (phydev->is_pseudo_fixed_link)
903		- /* Stop PHY layer to call the hook to adjust the link in case
904		- * of a switch is attached to the stmmac driver.
905		- */
906		- phydev->irq = PHY_IGNORE_INTERRUPT;
907		- else
908		- /* At this stage, init the EEE if supported.
909		- * Never called in case of fixed_link.
910		- */
911		- priv->eee_enabled = stmmac_eee_init(priv);
	923	+ linkmode_and(state->advertising, state->advertising, mac_supported);
	924	+ linkmode_andnot(state->advertising, state->advertising, mask);
	925	+
	926	+ /* If PCS is supported, check which modes it supports. */
	927	+ stmmac_xpcs_validate(priv, &priv->hw->xpcs_args, supported, state);
912	928	}
	929	+
	930	+static void stmmac_mac_pcs_get_state(struct phylink_config *config,
	931	+ struct phylink_link_state *state)
	932	+{
	933	+ struct stmmac_priv *priv = netdev_priv(to_net_dev(config->dev));
	934	+
	935	+ state->link = 0;
	936	+ stmmac_xpcs_get_state(priv, &priv->hw->xpcs_args, state);
	937	+}
	938	+
	939	+static void stmmac_mac_config(struct phylink_config *config, unsigned int mode,
	940	+ const struct phylink_link_state *state)
	941	+{
	942	+ struct stmmac_priv *priv = netdev_priv(to_net_dev(config->dev));
	943	+
	944	+ stmmac_xpcs_config(priv, &priv->hw->xpcs_args, state);
	945	+}
	946	+
	947	+static void stmmac_mac_an_restart(struct phylink_config *config)
	948	+{
	949	+ /* Not Supported */
	950	+}
	951	+
	952	+static void stmmac_mac_link_down(struct phylink_config *config,
	953	+ unsigned int mode, phy_interface_t interface)
	954	+{
	955	+ struct stmmac_priv *priv = netdev_priv(to_net_dev(config->dev));
	956	+
	957	+ stmmac_mac_set(priv, priv->ioaddr, false);
	958	+ priv->eee_active = false;
	959	+ priv->tx_lpi_enabled = false;
	960	+ stmmac_eee_init(priv);
	961	+ stmmac_set_eee_pls(priv, priv->hw, false);
	962	+}
	963	+
	964	+static void stmmac_mac_link_up(struct phylink_config *config,
	965	+ struct phy_device *phy,
	966	+ unsigned int mode, phy_interface_t interface,
	967	+ int speed, int duplex,
	968	+ bool tx_pause, bool rx_pause)
	969	+{
	970	+ struct stmmac_priv *priv = netdev_priv(to_net_dev(config->dev));
	971	+ u32 ctrl;
	972	+
	973	+ stmmac_xpcs_link_up(priv, &priv->hw->xpcs_args, speed, interface);
	974	+
	975	+ ctrl = readl(priv->ioaddr + MAC_CTRL_REG);
	976	+ ctrl &= ~priv->hw->link.speed_mask;
	977	+
	978	+ if (interface == PHY_INTERFACE_MODE_USXGMII) {
	979	+ switch (speed) {
	980	+ case SPEED_10000:
	981	+ ctrl \|= priv->hw->link.xgmii.speed10000;
	982	+ break;
	983	+ case SPEED_5000:
	984	+ ctrl \|= priv->hw->link.xgmii.speed5000;
	985	+ break;
	986	+ case SPEED_2500:
	987	+ ctrl \|= priv->hw->link.xgmii.speed2500;
	988	+ break;
	989	+ default:
	990	+ return;
	991	+ }
	992	+ } else if (interface == PHY_INTERFACE_MODE_XLGMII) {
	993	+ switch (speed) {
	994	+ case SPEED_100000:
	995	+ ctrl \|= priv->hw->link.xlgmii.speed100000;
	996	+ break;
	997	+ case SPEED_50000:
	998	+ ctrl \|= priv->hw->link.xlgmii.speed50000;
	999	+ break;
	1000	+ case SPEED_40000:
	1001	+ ctrl \|= priv->hw->link.xlgmii.speed40000;
	1002	+ break;
	1003	+ case SPEED_25000:
	1004	+ ctrl \|= priv->hw->link.xlgmii.speed25000;
	1005	+ break;
	1006	+ case SPEED_10000:
	1007	+ ctrl \|= priv->hw->link.xgmii.speed10000;
	1008	+ break;
	1009	+ case SPEED_2500:
	1010	+ ctrl \|= priv->hw->link.speed2500;
	1011	+ break;
	1012	+ case SPEED_1000:
	1013	+ ctrl \|= priv->hw->link.speed1000;
	1014	+ break;
	1015	+ default:
	1016	+ return;
	1017	+ }
	1018	+ } else {
	1019	+ switch (speed) {
	1020	+ case SPEED_2500:
	1021	+ ctrl \|= priv->hw->link.speed2500;
	1022	+ break;
	1023	+ case SPEED_1000:
	1024	+ ctrl \|= priv->hw->link.speed1000;
	1025	+ break;
	1026	+ case SPEED_100:
	1027	+ ctrl \|= priv->hw->link.speed100;
	1028	+ break;
	1029	+ case SPEED_10:
	1030	+ ctrl \|= priv->hw->link.speed10;
	1031	+ break;
	1032	+ default:
	1033	+ return;
	1034	+ }
	1035	+ }
	1036	+
	1037	+ priv->speed = speed;
	1038	+
	1039	+ if (priv->plat->fix_mac_speed)
	1040	+ priv->plat->fix_mac_speed(priv->plat->bsp_priv, speed);
	1041	+
	1042	+ if (!duplex)
	1043	+ ctrl &= ~priv->hw->link.duplex;
	1044	+ else
	1045	+ ctrl \|= priv->hw->link.duplex;
	1046	+
	1047	+ /* Flow Control operation */
	1048	+ if (rx_pause && tx_pause)
	1049	+ priv->flow_ctrl = FLOW_AUTO;
	1050	+ else if (rx_pause && !tx_pause)
	1051	+ priv->flow_ctrl = FLOW_RX;
	1052	+ else if (!rx_pause && tx_pause)
	1053	+ priv->flow_ctrl = FLOW_TX;
	1054	+ else
	1055	+ priv->flow_ctrl = FLOW_OFF;
	1056	+
	1057	+ stmmac_mac_flow_ctrl(priv, duplex);
	1058	+
	1059	+ writel(ctrl, priv->ioaddr + MAC_CTRL_REG);
	1060	+
	1061	+ stmmac_mac_set(priv, priv->ioaddr, true);
	1062	+ if (phy && priv->dma_cap.eee) {
	1063	+ priv->eee_active = phy_init_eee(phy, 1) >= 0;
	1064	+ priv->eee_enabled = stmmac_eee_init(priv);
	1065	+ priv->tx_lpi_enabled = priv->eee_enabled;
	1066	+ stmmac_set_eee_pls(priv, priv->hw, true);
	1067	+ }
	1068	+}
	1069	+
	1070	+static const struct phylink_mac_ops stmmac_phylink_mac_ops = {
	1071	+ .validate = stmmac_validate,
	1072	+ .mac_pcs_get_state = stmmac_mac_pcs_get_state,
	1073	+ .mac_config = stmmac_mac_config,
	1074	+ .mac_an_restart = stmmac_mac_an_restart,
	1075	+ .mac_link_down = stmmac_mac_link_down,
	1076	+ .mac_link_up = stmmac_mac_link_up,
	1077	+};
913	1078
914	1079	/**
915	1080	* stmmac_check_pcs_mode - verify if RGMII/SGMII is supported
..	..	@@ -936,6 +1101,23 @@
936	1101	}
937	1102	}
938	1103
	1104	+static void rtl8211F_led_control(struct phy_device *phydev)
	1105	+{
	1106	+ printk("ben debug:rtl8211F_led_control...1 \n");
	1107	+
	1108	+ if(!phydev) return;
	1109	+ if(phydev->phy_id!=0x001cc916) return; /* only for 8211E*/
	1110	+
	1111	+ /switch to extension page44/
	1112	+ phy_write(phydev, 31, 0x0d04);
	1113	+//add hc 1000M --> orange
	1114	+// 100M --> green
	1115	+ phy_write(phydev, 16, 0x6D02);
	1116	+//add hc 1000M&100M --> green
	1117	+// phy_write(phydev, 16, 0x6C0A);
	1118	+ printk("ben debug:rtl8211F_led_control...2 \n");
	1119	+}
	1120	+
939	1121	/**
940	1122	* stmmac_init_phy - PHY initialization
941	1123	* @dev: net device structure
..	..	@@ -947,85 +1129,69 @@
947	1129	static int stmmac_init_phy(struct net_device *dev)
948	1130	{
949	1131	struct stmmac_priv *priv = netdev_priv(dev);
950		- u32 tx_cnt = priv->plat->tx_queues_to_use;
951		- struct phy_device *phydev;
952		- char phy_id_fmt[MII_BUS_ID_SIZE + 3];
953		- char bus_id[MII_BUS_ID_SIZE];
954		- int interface = priv->plat->interface;
955		- int max_speed = priv->plat->max_speed;
956		- priv->oldlink = false;
957		- priv->speed = SPEED_UNKNOWN;
958		- priv->oldduplex = DUPLEX_UNKNOWN;
	1132	+ struct device_node *node;
	1133	+ int ret;
959	1134
960	1135	if (priv->plat->integrated_phy_power)
961		- priv->plat->integrated_phy_power(priv->plat->bsp_priv, true);
	1136	+ ret = priv->plat->integrated_phy_power(priv->plat->bsp_priv, true);
962	1137
963		- if (priv->plat->phy_node) {
964		- phydev = of_phy_connect(dev, priv->plat->phy_node,
965		- &stmmac_adjust_link, 0, interface);
966		- } else {
967		- snprintf(bus_id, MII_BUS_ID_SIZE, "stmmac-%x",
968		- priv->plat->bus_id);
	1138	+ node = priv->plat->phylink_node;
969	1139
970		- snprintf(phy_id_fmt, MII_BUS_ID_SIZE + 3, PHY_ID_FMT, bus_id,
971		- priv->plat->phy_addr);
972		- netdev_dbg(priv->dev, "%s: trying to attach to %s\n", __func__,
973		- phy_id_fmt);
	1140	+ if (node)
	1141	+ ret = phylink_of_phy_connect(priv->phylink, node, 0);
974	1142
975		- phydev = phy_connect(dev, phy_id_fmt, &stmmac_adjust_link,
976		- interface);
977		- }
	1143	+ /* Some DT bindings do not set-up the PHY handle. Let's try to
	1144	+ * manually parse it
	1145	+ */
	1146	+ if (!node \|\| ret) {
	1147	+ int addr = priv->plat->phy_addr;
	1148	+ struct phy_device *phydev;
978	1149
979		- if (IS_ERR_OR_NULL(phydev)) {
980		- netdev_err(priv->dev, "Could not attach to PHY\n");
981		- if (!phydev)
	1150	+ phydev = mdiobus_get_phy(priv->mii, addr);
	1151	+ if (!phydev) {
	1152	+ netdev_err(priv->dev, "no phy at addr %d\n", addr);
982	1153	return -ENODEV;
	1154	+ }
983	1155
984		- return PTR_ERR(phydev);
	1156	+ rtl8211F_led_control(phydev);
	1157	+ ret = phylink_connect_phy(priv->phylink, phydev);
985	1158	}
986	1159
987		- /* Stop Advertising 1000BASE Capability if interface is not GMII */
988		- if ((interface == PHY_INTERFACE_MODE_MII) \|\|
989		- (interface == PHY_INTERFACE_MODE_RMII) \|\|
990		- (max_speed < 1000 && max_speed > 0))
991		- phydev->advertising &= ~(SUPPORTED_1000baseT_Half \|
992		- SUPPORTED_1000baseT_Full);
	1160	+ if (!priv->plat->pmt) {
	1161	+ struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
993	1162
994		- /*
995		- * Half-duplex mode not supported with multiqueue
996		- * half-duplex can only works with single queue
997		- */
998		- if (tx_cnt > 1)
999		- phydev->supported &= ~(SUPPORTED_1000baseT_Half \|
1000		- SUPPORTED_100baseT_Half \|
1001		- SUPPORTED_10baseT_Half);
1002		-
1003		- /*
1004		- * Broken HW is sometimes missing the pull-up resistor on the
1005		- * MDIO line, which results in reads to non-existent devices returning
1006		- * 0 rather than 0xffff. Catch this here and treat 0 as a non-existent
1007		- * device as well.
1008		- * Note: phydev->phy_id is the result of reading the UID PHY registers.
1009		- */
1010		- if (!priv->plat->phy_node && phydev->phy_id == 0) {
1011		- phy_disconnect(phydev);
1012		- return -ENODEV;
	1163	+ phylink_ethtool_get_wol(priv->phylink, &wol);
	1164	+ device_set_wakeup_capable(priv->device, !!wol.supported);
1013	1165	}
	1166	+ return ret;
	1167	+}
1014	1168
1015		- /* stmmac_adjust_link will change this to PHY_IGNORE_INTERRUPT to avoid
1016		- * subsequent PHY polling, make sure we force a link transition if
1017		- * we have a UP/DOWN/UP transition
1018		- */
1019		- if (phydev->is_pseudo_fixed_link)
1020		- phydev->irq = PHY_POLL;
	1169	+static int stmmac_phy_setup(struct stmmac_priv *priv)
	1170	+{
	1171	+ struct fwnode_handle *fwnode = of_fwnode_handle(priv->plat->phylink_node);
	1172	+ int mode = priv->plat->phy_interface;
	1173	+ struct phylink *phylink;
1021	1174
1022		- phy_attached_info(phydev);
	1175	+ priv->phylink_config.dev = &priv->dev->dev;
	1176	+ priv->phylink_config.type = PHYLINK_NETDEV;
	1177	+ priv->phylink_config.pcs_poll = true;
	1178	+
	1179	+ if (!fwnode)
	1180	+ fwnode = dev_fwnode(priv->device);
	1181	+
	1182	+ phylink = phylink_create(&priv->phylink_config, fwnode,
	1183	+ mode, &stmmac_phylink_mac_ops);
	1184	+ if (IS_ERR(phylink))
	1185	+ return PTR_ERR(phylink);
	1186	+
	1187	+ priv->phylink = phylink;
1023	1188	return 0;
1024	1189	}
1025	1190
1026	1191	static void stmmac_display_rx_rings(struct stmmac_priv *priv)
1027	1192	{
1028	1193	u32 rx_cnt = priv->plat->rx_queues_to_use;
	1194	+ unsigned int desc_size;
1029	1195	void *head_rx;
1030	1196	u32 queue;
1031	1197
..	..	@@ -1035,19 +1201,24 @@
1035	1201
1036	1202	pr_info("\tRX Queue %u rings\n", queue);
1037	1203
1038		- if (priv->extend_desc)
	1204	+ if (priv->extend_desc) {
1039	1205	head_rx = (void *)rx_q->dma_erx;
1040		- else
	1206	+ desc_size = sizeof(struct dma_extended_desc);
	1207	+ } else {
1041	1208	head_rx = (void *)rx_q->dma_rx;
	1209	+ desc_size = sizeof(struct dma_desc);
	1210	+ }
1042	1211
1043	1212	/* Display RX ring */
1044		- stmmac_display_ring(priv, head_rx, DMA_RX_SIZE, true);
	1213	+ stmmac_display_ring(priv, head_rx, priv->dma_rx_size, true,
	1214	+ rx_q->dma_rx_phy, desc_size);
1045	1215	}
1046	1216	}
1047	1217
1048	1218	static void stmmac_display_tx_rings(struct stmmac_priv *priv)
1049	1219	{
1050	1220	u32 tx_cnt = priv->plat->tx_queues_to_use;
	1221	+ unsigned int desc_size;
1051	1222	void *head_tx;
1052	1223	u32 queue;
1053	1224
..	..	@@ -1057,12 +1228,19 @@
1057	1228
1058	1229	pr_info("\tTX Queue %d rings\n", queue);
1059	1230
1060		- if (priv->extend_desc)
	1231	+ if (priv->extend_desc) {
1061	1232	head_tx = (void *)tx_q->dma_etx;
1062		- else
	1233	+ desc_size = sizeof(struct dma_extended_desc);
	1234	+ } else if (tx_q->tbs & STMMAC_TBS_AVAIL) {
	1235	+ head_tx = (void *)tx_q->dma_entx;
	1236	+ desc_size = sizeof(struct dma_edesc);
	1237	+ } else {
1063	1238	head_tx = (void *)tx_q->dma_tx;
	1239	+ desc_size = sizeof(struct dma_desc);
	1240	+ }
1064	1241
1065		- stmmac_display_ring(priv, head_tx, DMA_TX_SIZE, false);
	1242	+ stmmac_display_ring(priv, head_tx, priv->dma_tx_size, false,
	1243	+ tx_q->dma_tx_phy, desc_size);
1066	1244	}
1067	1245	}
1068	1246
..	..	@@ -1106,16 +1284,16 @@
1106	1284	int i;
1107	1285
1108	1286	/* Clear the RX descriptors */
1109		- for (i = 0; i < DMA_RX_SIZE; i++)
	1287	+ for (i = 0; i < priv->dma_rx_size; i++)
1110	1288	if (priv->extend_desc)
1111	1289	stmmac_init_rx_desc(priv, &rx_q->dma_erx[i].basic,
1112	1290	priv->use_riwt, priv->mode,
1113		- (i == DMA_RX_SIZE - 1),
	1291	+ (i == priv->dma_rx_size - 1),
1114	1292	priv->dma_buf_sz);
1115	1293	else
1116	1294	stmmac_init_rx_desc(priv, &rx_q->dma_rx[i],
1117	1295	priv->use_riwt, priv->mode,
1118		- (i == DMA_RX_SIZE - 1),
	1296	+ (i == priv->dma_rx_size - 1),
1119	1297	priv->dma_buf_sz);
1120	1298	}
1121	1299
..	..	@@ -1132,13 +1310,19 @@
1132	1310	int i;
1133	1311
1134	1312	/* Clear the TX descriptors */
1135		- for (i = 0; i < DMA_TX_SIZE; i++)
	1313	+ for (i = 0; i < priv->dma_tx_size; i++) {
	1314	+ int last = (i == (priv->dma_tx_size - 1));
	1315	+ struct dma_desc *p;
	1316	+
1136	1317	if (priv->extend_desc)
1137		- stmmac_init_tx_desc(priv, &tx_q->dma_etx[i].basic,
1138		- priv->mode, (i == DMA_TX_SIZE - 1));
	1318	+ p = &tx_q->dma_etx[i].basic;
	1319	+ else if (tx_q->tbs & STMMAC_TBS_AVAIL)
	1320	+ p = &tx_q->dma_entx[i].basic;
1139	1321	else
1140		- stmmac_init_tx_desc(priv, &tx_q->dma_tx[i],
1141		- priv->mode, (i == DMA_TX_SIZE - 1));
	1322	+ p = &tx_q->dma_tx[i];
	1323	+
	1324	+ stmmac_init_tx_desc(priv, p, priv->mode, last);
	1325	+ }
1142	1326	}
1143	1327
1144	1328	/**
..	..	@@ -1176,26 +1360,30 @@
1176	1360	int i, gfp_t flags, u32 queue)
1177	1361	{
1178	1362	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
1179		- struct sk_buff *skb;
	1363	+ struct stmmac_rx_buffer *buf = &rx_q->buf_pool[i];
	1364	+ gfp_t gfp = (GFP_ATOMIC \| __GFP_NOWARN);
1180	1365
1181		- skb = __netdev_alloc_skb_ip_align(priv->dev, priv->dma_buf_sz, flags);
1182		- if (!skb) {
1183		- netdev_err(priv->dev,
1184		- "%s: Rx init fails; skb is NULL\n", __func__);
	1366	+ if (priv->dma_cap.addr64 <= 32)
	1367	+ gfp \|= GFP_DMA32;
	1368	+
	1369	+ buf->page = page_pool_alloc_pages(rx_q->page_pool, gfp);
	1370	+ if (!buf->page)
1185	1371	return -ENOMEM;
1186		- }
1187		- rx_q->rx_skbuff[i] = skb;
1188		- rx_q->rx_skbuff_dma[i] = dma_map_single(priv->device, skb->data,
1189		- priv->dma_buf_sz,
1190		- DMA_FROM_DEVICE);
1191		- if (dma_mapping_error(priv->device, rx_q->rx_skbuff_dma[i])) {
1192		- netdev_err(priv->dev, "%s: DMA mapping error\n", __func__);
1193		- dev_kfree_skb_any(skb);
1194		- return -EINVAL;
	1372	+
	1373	+ if (priv->sph) {
	1374	+ buf->sec_page = page_pool_alloc_pages(rx_q->page_pool, gfp);
	1375	+ if (!buf->sec_page)
	1376	+ return -ENOMEM;
	1377	+
	1378	+ buf->sec_addr = page_pool_get_dma_addr(buf->sec_page);
	1379	+ stmmac_set_desc_sec_addr(priv, p, buf->sec_addr, true);
	1380	+ } else {
	1381	+ buf->sec_page = NULL;
	1382	+ stmmac_set_desc_sec_addr(priv, p, buf->sec_addr, false);
1195	1383	}
1196	1384
1197		- stmmac_set_desc_addr(priv, p, rx_q->rx_skbuff_dma[i]);
1198		-
	1385	+ buf->addr = page_pool_get_dma_addr(buf->page);
	1386	+ stmmac_set_desc_addr(priv, p, buf->addr);
1199	1387	if (priv->dma_buf_sz == BUF_SIZE_16KiB)
1200	1388	stmmac_init_desc3(priv, p);
1201	1389
..	..	@@ -1211,13 +1399,15 @@
1211	1399	static void stmmac_free_rx_buffer(struct stmmac_priv *priv, u32 queue, int i)
1212	1400	{
1213	1401	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
	1402	+ struct stmmac_rx_buffer *buf = &rx_q->buf_pool[i];
1214	1403
1215		- if (rx_q->rx_skbuff[i]) {
1216		- dma_unmap_single(priv->device, rx_q->rx_skbuff_dma[i],
1217		- priv->dma_buf_sz, DMA_FROM_DEVICE);
1218		- dev_kfree_skb_any(rx_q->rx_skbuff[i]);
1219		- }
1220		- rx_q->rx_skbuff[i] = NULL;
	1404	+ if (buf->page)
	1405	+ page_pool_put_full_page(rx_q->page_pool, buf->page, false);
	1406	+ buf->page = NULL;
	1407	+
	1408	+ if (buf->sec_page)
	1409	+ page_pool_put_full_page(rx_q->page_pool, buf->sec_page, false);
	1410	+ buf->sec_page = NULL;
1221	1411	}
1222	1412
1223	1413	/**
..	..	@@ -1264,18 +1454,8 @@
1264	1454	struct stmmac_priv *priv = netdev_priv(dev);
1265	1455	u32 rx_count = priv->plat->rx_queues_to_use;
1266	1456	int ret = -ENOMEM;
1267		- int bfsize = 0;
1268	1457	int queue;
1269	1458	int i;
1270		-
1271		- bfsize = stmmac_set_16kib_bfsize(priv, dev->mtu);
1272		- if (bfsize < 0)
1273		- bfsize = 0;
1274		-
1275		- if (bfsize < BUF_SIZE_16KiB)
1276		- bfsize = stmmac_set_bfsize(dev->mtu, priv->dma_buf_sz);
1277		-
1278		- priv->dma_buf_sz = bfsize;
1279	1459
1280	1460	/* RX INITIALIZATION */
1281	1461	netif_dbg(priv, probe, priv->dev,
..	..	@@ -1288,7 +1468,9 @@
1288	1468	"(%s) dma_rx_phy=0x%08x\n", __func__,
1289	1469	(u32)rx_q->dma_rx_phy);
1290	1470
1291		- for (i = 0; i < DMA_RX_SIZE; i++) {
	1471	+ stmmac_clear_rx_descriptors(priv, queue);
	1472	+
	1473	+ for (i = 0; i < priv->dma_rx_size; i++) {
1292	1474	struct dma_desc *p;
1293	1475
1294	1476	if (priv->extend_desc)
..	..	@@ -1300,29 +1482,23 @@
1300	1482	queue);
1301	1483	if (ret)
1302	1484	goto err_init_rx_buffers;
1303		-
1304		- netif_dbg(priv, probe, priv->dev, "[%p]\t[%p]\t[%x]\n",
1305		- rx_q->rx_skbuff[i], rx_q->rx_skbuff[i]->data,
1306		- (unsigned int)rx_q->rx_skbuff_dma[i]);
1307	1485	}
1308	1486
1309	1487	rx_q->cur_rx = 0;
1310		- rx_q->dirty_rx = (unsigned int)(i - DMA_RX_SIZE);
1311		-
1312		- stmmac_clear_rx_descriptors(priv, queue);
	1488	+ rx_q->dirty_rx = (unsigned int)(i - priv->dma_rx_size);
1313	1489
1314	1490	/* Setup the chained descriptor addresses */
1315	1491	if (priv->mode == STMMAC_CHAIN_MODE) {
1316	1492	if (priv->extend_desc)
1317	1493	stmmac_mode_init(priv, rx_q->dma_erx,
1318		- rx_q->dma_rx_phy, DMA_RX_SIZE, 1);
	1494	+ rx_q->dma_rx_phy,
	1495	+ priv->dma_rx_size, 1);
1319	1496	else
1320	1497	stmmac_mode_init(priv, rx_q->dma_rx,
1321		- rx_q->dma_rx_phy, DMA_RX_SIZE, 0);
	1498	+ rx_q->dma_rx_phy,
	1499	+ priv->dma_rx_size, 0);
1322	1500	}
1323	1501	}
1324		-
1325		- buf_sz = bfsize;
1326	1502
1327	1503	return 0;
1328	1504
..	..	@@ -1334,7 +1510,7 @@
1334	1510	if (queue == 0)
1335	1511	break;
1336	1512
1337		- i = DMA_RX_SIZE;
	1513	+ i = priv->dma_rx_size;
1338	1514	queue--;
1339	1515	}
1340	1516
..	..	@@ -1366,16 +1542,20 @@
1366	1542	if (priv->mode == STMMAC_CHAIN_MODE) {
1367	1543	if (priv->extend_desc)
1368	1544	stmmac_mode_init(priv, tx_q->dma_etx,
1369		- tx_q->dma_tx_phy, DMA_TX_SIZE, 1);
1370		- else
	1545	+ tx_q->dma_tx_phy,
	1546	+ priv->dma_tx_size, 1);
	1547	+ else if (!(tx_q->tbs & STMMAC_TBS_AVAIL))
1371	1548	stmmac_mode_init(priv, tx_q->dma_tx,
1372		- tx_q->dma_tx_phy, DMA_TX_SIZE, 0);
	1549	+ tx_q->dma_tx_phy,
	1550	+ priv->dma_tx_size, 0);
1373	1551	}
1374	1552
1375		- for (i = 0; i < DMA_TX_SIZE; i++) {
	1553	+ for (i = 0; i < priv->dma_tx_size; i++) {
1376	1554	struct dma_desc *p;
1377	1555	if (priv->extend_desc)
1378	1556	p = &((tx_q->dma_etx + i)->basic);
	1557	+ else if (tx_q->tbs & STMMAC_TBS_AVAIL)
	1558	+ p = &((tx_q->dma_entx + i)->basic);
1379	1559	else
1380	1560	p = tx_q->dma_tx + i;
1381	1561
..	..	@@ -1434,7 +1614,7 @@
1434	1614	{
1435	1615	int i;
1436	1616
1437		- for (i = 0; i < DMA_RX_SIZE; i++)
	1617	+ for (i = 0; i < priv->dma_rx_size; i++)
1438	1618	stmmac_free_rx_buffer(priv, queue, i);
1439	1619	}
1440	1620
..	..	@@ -1447,7 +1627,7 @@
1447	1627	{
1448	1628	int i;
1449	1629
1450		- for (i = 0; i < DMA_TX_SIZE; i++)
	1630	+ for (i = 0; i < priv->dma_tx_size; i++)
1451	1631	stmmac_free_tx_buffer(priv, queue, i);
1452	1632	}
1453	1633
..	..	@@ -1482,16 +1662,17 @@
1482	1662
1483	1663	/* Free DMA regions of consistent memory previously allocated */
1484	1664	if (!priv->extend_desc)
1485		- dma_free_coherent(priv->device,
1486		- DMA_RX_SIZE * sizeof(struct dma_desc),
	1665	+ dma_free_coherent(priv->device, priv->dma_rx_size *
	1666	+ sizeof(struct dma_desc),
1487	1667	rx_q->dma_rx, rx_q->dma_rx_phy);
1488	1668	else
1489		- dma_free_coherent(priv->device, DMA_RX_SIZE *
	1669	+ dma_free_coherent(priv->device, priv->dma_rx_size *
1490	1670	sizeof(struct dma_extended_desc),
1491	1671	rx_q->dma_erx, rx_q->dma_rx_phy);
1492	1672
1493		- kfree(rx_q->rx_skbuff_dma);
1494		- kfree(rx_q->rx_skbuff);
	1673	+ kfree(rx_q->buf_pool);
	1674	+ if (rx_q->page_pool)
	1675	+ page_pool_destroy(rx_q->page_pool);
1495	1676	}
1496	1677	}
1497	1678
..	..	@@ -1507,19 +1688,26 @@
1507	1688	/* Free TX queue resources */
1508	1689	for (queue = 0; queue < tx_count; queue++) {
1509	1690	struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
	1691	+ size_t size;
	1692	+ void *addr;
1510	1693
1511	1694	/* Release the DMA TX socket buffers */
1512	1695	dma_free_tx_skbufs(priv, queue);
1513	1696
1514		- /* Free DMA regions of consistent memory previously allocated */
1515		- if (!priv->extend_desc)
1516		- dma_free_coherent(priv->device,
1517		- DMA_TX_SIZE * sizeof(struct dma_desc),
1518		- tx_q->dma_tx, tx_q->dma_tx_phy);
1519		- else
1520		- dma_free_coherent(priv->device, DMA_TX_SIZE *
1521		- sizeof(struct dma_extended_desc),
1522		- tx_q->dma_etx, tx_q->dma_tx_phy);
	1697	+ if (priv->extend_desc) {
	1698	+ size = sizeof(struct dma_extended_desc);
	1699	+ addr = tx_q->dma_etx;
	1700	+ } else if (tx_q->tbs & STMMAC_TBS_AVAIL) {
	1701	+ size = sizeof(struct dma_edesc);
	1702	+ addr = tx_q->dma_entx;
	1703	+ } else {
	1704	+ size = sizeof(struct dma_desc);
	1705	+ addr = tx_q->dma_tx;
	1706	+ }
	1707	+
	1708	+ size *= priv->dma_tx_size;
	1709	+
	1710	+ dma_free_coherent(priv->device, size, addr, tx_q->dma_tx_phy);
1523	1711
1524	1712	kfree(tx_q->tx_skbuff_dma);
1525	1713	kfree(tx_q->tx_skbuff);
..	..	@@ -1543,39 +1731,49 @@
1543	1731	/* RX queues buffers and DMA */
1544	1732	for (queue = 0; queue < rx_count; queue++) {
1545	1733	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
	1734	+ struct page_pool_params pp_params = { 0 };
	1735	+ unsigned int num_pages;
1546	1736
1547	1737	rx_q->queue_index = queue;
1548	1738	rx_q->priv_data = priv;
1549	1739
1550		- rx_q->rx_skbuff_dma = kmalloc_array(DMA_RX_SIZE,
1551		- sizeof(dma_addr_t),
1552		- GFP_KERNEL);
1553		- if (!rx_q->rx_skbuff_dma)
1554		- goto err_dma;
	1740	+ pp_params.flags = PP_FLAG_DMA_MAP \| PP_FLAG_DMA_SYNC_DEV;
	1741	+ pp_params.pool_size = priv->dma_rx_size;
	1742	+ num_pages = DIV_ROUND_UP(priv->dma_buf_sz, PAGE_SIZE);
	1743	+ pp_params.order = ilog2(num_pages);
	1744	+ pp_params.nid = dev_to_node(priv->device);
	1745	+ pp_params.dev = priv->device;
	1746	+ pp_params.dma_dir = DMA_FROM_DEVICE;
	1747	+ pp_params.max_len = num_pages * PAGE_SIZE;
1555	1748
1556		- rx_q->rx_skbuff = kmalloc_array(DMA_RX_SIZE,
1557		- sizeof(struct sk_buff *),
1558		- GFP_KERNEL);
1559		- if (!rx_q->rx_skbuff)
	1749	+ rx_q->page_pool = page_pool_create(&pp_params);
	1750	+ if (IS_ERR(rx_q->page_pool)) {
	1751	+ ret = PTR_ERR(rx_q->page_pool);
	1752	+ rx_q->page_pool = NULL;
	1753	+ goto err_dma;
	1754	+ }
	1755	+
	1756	+ rx_q->buf_pool = kcalloc(priv->dma_rx_size,
	1757	+ sizeof(*rx_q->buf_pool),
	1758	+ GFP_KERNEL);
	1759	+ if (!rx_q->buf_pool)
1560	1760	goto err_dma;
1561	1761
1562	1762	if (priv->extend_desc) {
1563		- rx_q->dma_erx = dma_zalloc_coherent(priv->device,
1564		- DMA_RX_SIZE *
1565		- sizeof(struct
1566		- dma_extended_desc),
1567		- &rx_q->dma_rx_phy,
1568		- GFP_KERNEL);
	1763	+ rx_q->dma_erx = dma_alloc_coherent(priv->device,
	1764	+ priv->dma_rx_size *
	1765	+ sizeof(struct dma_extended_desc),
	1766	+ &rx_q->dma_rx_phy,
	1767	+ GFP_KERNEL);
1569	1768	if (!rx_q->dma_erx)
1570	1769	goto err_dma;
1571	1770
1572	1771	} else {
1573		- rx_q->dma_rx = dma_zalloc_coherent(priv->device,
1574		- DMA_RX_SIZE *
1575		- sizeof(struct
1576		- dma_desc),
1577		- &rx_q->dma_rx_phy,
1578		- GFP_KERNEL);
	1772	+ rx_q->dma_rx = dma_alloc_coherent(priv->device,
	1773	+ priv->dma_rx_size *
	1774	+ sizeof(struct dma_desc),
	1775	+ &rx_q->dma_rx_phy,
	1776	+ GFP_KERNEL);
1579	1777	if (!rx_q->dma_rx)
1580	1778	goto err_dma;
1581	1779	}
..	..	@@ -1606,48 +1804,50 @@
1606	1804	/* TX queues buffers and DMA */
1607	1805	for (queue = 0; queue < tx_count; queue++) {
1608	1806	struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
	1807	+ size_t size;
	1808	+ void *addr;
1609	1809
1610	1810	tx_q->queue_index = queue;
1611	1811	tx_q->priv_data = priv;
1612	1812
1613		- tx_q->tx_skbuff_dma = kmalloc_array(DMA_TX_SIZE,
1614		- sizeof(*tx_q->tx_skbuff_dma),
1615		- GFP_KERNEL);
	1813	+ tx_q->tx_skbuff_dma = kcalloc(priv->dma_tx_size,
	1814	+ sizeof(*tx_q->tx_skbuff_dma),
	1815	+ GFP_KERNEL);
1616	1816	if (!tx_q->tx_skbuff_dma)
1617	1817	goto err_dma;
1618	1818
1619		- tx_q->tx_skbuff = kmalloc_array(DMA_TX_SIZE,
1620		- sizeof(struct sk_buff *),
1621		- GFP_KERNEL);
	1819	+ tx_q->tx_skbuff = kcalloc(priv->dma_tx_size,
	1820	+ sizeof(struct sk_buff *),
	1821	+ GFP_KERNEL);
1622	1822	if (!tx_q->tx_skbuff)
1623	1823	goto err_dma;
1624	1824
1625		- if (priv->extend_desc) {
1626		- tx_q->dma_etx = dma_zalloc_coherent(priv->device,
1627		- DMA_TX_SIZE *
1628		- sizeof(struct
1629		- dma_extended_desc),
1630		- &tx_q->dma_tx_phy,
1631		- GFP_KERNEL);
1632		- if (!tx_q->dma_etx)
1633		- goto err_dma;
1634		- } else {
1635		- tx_q->dma_tx = dma_zalloc_coherent(priv->device,
1636		- DMA_TX_SIZE *
1637		- sizeof(struct
1638		- dma_desc),
1639		- &tx_q->dma_tx_phy,
1640		- GFP_KERNEL);
1641		- if (!tx_q->dma_tx)
1642		- goto err_dma;
1643		- }
	1825	+ if (priv->extend_desc)
	1826	+ size = sizeof(struct dma_extended_desc);
	1827	+ else if (tx_q->tbs & STMMAC_TBS_AVAIL)
	1828	+ size = sizeof(struct dma_edesc);
	1829	+ else
	1830	+ size = sizeof(struct dma_desc);
	1831	+
	1832	+ size *= priv->dma_tx_size;
	1833	+
	1834	+ addr = dma_alloc_coherent(priv->device, size,
	1835	+ &tx_q->dma_tx_phy, GFP_KERNEL);
	1836	+ if (!addr)
	1837	+ goto err_dma;
	1838	+
	1839	+ if (priv->extend_desc)
	1840	+ tx_q->dma_etx = addr;
	1841	+ else if (tx_q->tbs & STMMAC_TBS_AVAIL)
	1842	+ tx_q->dma_entx = addr;
	1843	+ else
	1844	+ tx_q->dma_tx = addr;
1644	1845	}
1645	1846
1646	1847	return 0;
1647	1848
1648	1849	err_dma:
1649	1850	free_dma_tx_desc_resources(priv);
1650		-
1651	1851	return ret;
1652	1852	}
1653	1853
..	..	@@ -1858,6 +2058,7 @@
1858	2058	/**
1859	2059	* stmmac_tx_clean - to manage the transmission completion
1860	2060	* @priv: driver private structure
	2061	+ * @budget: napi budget limiting this functions packet handling
1861	2062	* @queue: TX queue index
1862	2063	* Description: it reclaims the transmit resources after transmission completes.
1863	2064	*/
..	..	@@ -1879,6 +2080,8 @@
1879	2080
1880	2081	if (priv->extend_desc)
1881	2082	p = (struct dma_desc *)(tx_q->dma_etx + entry);
	2083	+ else if (tx_q->tbs & STMMAC_TBS_AVAIL)
	2084	+ p = &tx_q->dma_entx[entry].basic;
1882	2085	else
1883	2086	p = tx_q->dma_tx + entry;
1884	2087
..	..	@@ -1937,7 +2140,7 @@
1937	2140
1938	2141	stmmac_release_tx_desc(priv, p, priv->mode);
1939	2142
1940		- entry = STMMAC_GET_ENTRY(entry, DMA_TX_SIZE);
	2143	+ entry = STMMAC_GET_ENTRY(entry, priv->dma_tx_size);
1941	2144	}
1942	2145	tx_q->dirty_tx = entry;
1943	2146
..	..	@@ -1946,7 +2149,7 @@
1946	2149
1947	2150	if (unlikely(netif_tx_queue_stopped(netdev_get_tx_queue(priv->dev,
1948	2151	queue))) &&
1949		- stmmac_tx_avail(priv, queue) > STMMAC_TX_THRESH) {
	2152	+ stmmac_tx_avail(priv, queue) > STMMAC_TX_THRESH(priv)) {
1950	2153
1951	2154	netif_dbg(priv, tx_done, priv->dev,
1952	2155	"%s: restart transmit\n", __func__);
..	..	@@ -1955,8 +2158,12 @@
1955	2158
1956	2159	if ((priv->eee_enabled) && (!priv->tx_path_in_lpi_mode)) {
1957	2160	stmmac_enable_eee_mode(priv);
1958		- mod_timer(&priv->eee_ctrl_timer, STMMAC_LPI_T(eee_timer));
	2161	+ mod_timer(&priv->eee_ctrl_timer, STMMAC_LPI_T(priv->tx_lpi_timer));
1959	2162	}
	2163	+
	2164	+ /* We still have pending packets, let's call for a new scheduling */
	2165	+ if (tx_q->dirty_tx != tx_q->cur_tx)
	2166	+ mod_timer(&tx_q->txtimer, STMMAC_COAL_TIMER(priv->tx_coal_timer));
1960	2167
1961	2168	__netif_tx_unlock_bh(netdev_get_tx_queue(priv->dev, queue));
1962	2169
..	..	@@ -1973,23 +2180,18 @@
1973	2180	static void stmmac_tx_err(struct stmmac_priv *priv, u32 chan)
1974	2181	{
1975	2182	struct stmmac_tx_queue *tx_q = &priv->tx_queue[chan];
1976		- int i;
1977	2183
1978	2184	netif_tx_stop_queue(netdev_get_tx_queue(priv->dev, chan));
1979	2185
1980	2186	stmmac_stop_tx_dma(priv, chan);
1981	2187	dma_free_tx_skbufs(priv, chan);
1982		- for (i = 0; i < DMA_TX_SIZE; i++)
1983		- if (priv->extend_desc)
1984		- stmmac_init_tx_desc(priv, &tx_q->dma_etx[i].basic,
1985		- priv->mode, (i == DMA_TX_SIZE - 1));
1986		- else
1987		- stmmac_init_tx_desc(priv, &tx_q->dma_tx[i],
1988		- priv->mode, (i == DMA_TX_SIZE - 1));
	2188	+ stmmac_clear_tx_descriptors(priv, chan);
1989	2189	tx_q->dirty_tx = 0;
1990	2190	tx_q->cur_tx = 0;
1991	2191	tx_q->mss = 0;
1992	2192	netdev_tx_reset_queue(netdev_get_tx_queue(priv->dev, chan));
	2193	+ stmmac_init_tx_chan(priv, priv->ioaddr, priv->plat->dma_cfg,
	2194	+ tx_q->dma_tx_phy, chan);
1993	2195	stmmac_start_tx_dma(priv, chan);
1994	2196
1995	2197	priv->dev->stats.tx_errors++;
..	..	@@ -2048,23 +2250,24 @@
2048	2250	int status = stmmac_dma_interrupt_status(priv, priv->ioaddr,
2049	2251	&priv->xstats, chan);
2050	2252	struct stmmac_channel *ch = &priv->channel[chan];
2051		- bool needs_work = false;
	2253	+ unsigned long flags;
2052	2254
2053		- if ((status & handle_rx) && ch->has_rx) {
2054		- needs_work = true;
2055		- } else {
2056		- status &= ~handle_rx;
	2255	+ if ((status & handle_rx) && (chan < priv->plat->rx_queues_to_use)) {
	2256	+ if (napi_schedule_prep(&ch->rx_napi)) {
	2257	+ spin_lock_irqsave(&ch->lock, flags);
	2258	+ stmmac_disable_dma_irq(priv, priv->ioaddr, chan, 1, 0);
	2259	+ spin_unlock_irqrestore(&ch->lock, flags);
	2260	+ __napi_schedule(&ch->rx_napi);
	2261	+ }
2057	2262	}
2058	2263
2059		- if ((status & handle_tx) && ch->has_tx) {
2060		- needs_work = true;
2061		- } else {
2062		- status &= ~handle_tx;
2063		- }
2064		-
2065		- if (needs_work && napi_schedule_prep(&ch->napi)) {
2066		- stmmac_disable_dma_irq(priv, priv->ioaddr, chan);
2067		- __napi_schedule(&ch->napi);
	2264	+ if ((status & handle_tx) && (chan < priv->plat->tx_queues_to_use)) {
	2265	+ if (napi_schedule_prep(&ch->tx_napi)) {
	2266	+ spin_lock_irqsave(&ch->lock, flags);
	2267	+ stmmac_disable_dma_irq(priv, priv->ioaddr, chan, 0, 1);
	2268	+ spin_unlock_irqrestore(&ch->lock, flags);
	2269	+ __napi_schedule(&ch->tx_napi);
	2270	+ }
2068	2271	}
2069	2272
2070	2273	return status;
..	..	@@ -2127,10 +2330,10 @@
2127	2330	unsigned int mode = MMC_CNTRL_RESET_ON_READ \| MMC_CNTRL_COUNTER_RESET \|
2128	2331	MMC_CNTRL_PRESET \| MMC_CNTRL_FULL_HALF_PRESET;
2129	2332
2130		- dwmac_mmc_intr_all_mask(priv->mmcaddr);
	2333	+ stmmac_mmc_intr_all_mask(priv, priv->mmcaddr);
2131	2334
2132	2335	if (priv->dma_cap.rmon) {
2133		- dwmac_mmc_ctrl(priv->mmcaddr, mode);
	2336	+ stmmac_mmc_ctrl(priv, priv->mmcaddr, mode);
2134	2337	memset(&priv->mmc, 0, sizeof(struct stmmac_counters));
2135	2338	} else
2136	2339	netdev_info(priv->dev, "No MAC Management Counters available\n");
..	..	@@ -2160,7 +2363,7 @@
2160	2363	static void stmmac_check_ether_addr(struct stmmac_priv *priv)
2161	2364	{
2162	2365	// if (!is_valid_ether_addr(priv->dev->dev_addr)) {
2163		- if(1) {
	2366	+ if (1) {
2164	2367	stmmac_get_umac_addr(priv, priv->hw, priv->dev->dev_addr, 0);
2165	2368	if (likely(priv->plat->get_eth_addr))
2166	2369	priv->plat->get_eth_addr(priv->plat->bsp_priv,
..	..	@@ -2223,7 +2426,8 @@
2223	2426	rx_q->dma_rx_phy, chan);
2224	2427
2225	2428	rx_q->rx_tail_addr = rx_q->dma_rx_phy +
2226		- (DMA_RX_SIZE * sizeof(struct dma_desc));
	2429	+ (priv->dma_rx_size *
	2430	+ sizeof(struct dma_desc));
2227	2431	stmmac_set_rx_tail_ptr(priv, priv->ioaddr,
2228	2432	rx_q->rx_tail_addr, chan);
2229	2433	}
..	..	@@ -2252,7 +2456,7 @@
2252	2456
2253	2457	/**
2254	2458	* stmmac_tx_timer - mitigation sw timer for tx.
2255		- * @data: data pointer
	2459	+ * @t: data pointer
2256	2460	* Description:
2257	2461	* This is the timer handler to directly invoke the stmmac_tx_clean.
2258	2462	*/
..	..	@@ -2264,25 +2468,32 @@
2264	2468
2265	2469	ch = &priv->channel[tx_q->queue_index];
2266	2470
2267		- if (likely(napi_schedule_prep(&ch->napi)))
2268		- __napi_schedule(&ch->napi);
	2471	+ if (likely(napi_schedule_prep(&ch->tx_napi))) {
	2472	+ unsigned long flags;
	2473	+
	2474	+ spin_lock_irqsave(&ch->lock, flags);
	2475	+ stmmac_disable_dma_irq(priv, priv->ioaddr, ch->index, 0, 1);
	2476	+ spin_unlock_irqrestore(&ch->lock, flags);
	2477	+ __napi_schedule(&ch->tx_napi);
	2478	+ }
2269	2479	}
2270	2480
2271	2481	/**
2272		- * stmmac_init_tx_coalesce - init tx mitigation options.
	2482	+ * stmmac_init_coalesce - init mitigation options.
2273	2483	* @priv: driver private structure
2274	2484	* Description:
2275		- * This inits the transmit coalesce parameters: i.e. timer rate,
	2485	+ * This inits the coalesce parameters: i.e. timer rate,
2276	2486	* timer handler and default threshold used for enabling the
2277	2487	* interrupt on completion bit.
2278	2488	*/
2279		-static void stmmac_init_tx_coalesce(struct stmmac_priv *priv)
	2489	+static void stmmac_init_coalesce(struct stmmac_priv *priv)
2280	2490	{
2281	2491	u32 tx_channel_count = priv->plat->tx_queues_to_use;
2282	2492	u32 chan;
2283	2493
2284	2494	priv->tx_coal_frames = STMMAC_TX_FRAMES;
2285	2495	priv->tx_coal_timer = STMMAC_COAL_TX_TIMER;
	2496	+ priv->rx_coal_frames = STMMAC_RX_FRAMES;
2286	2497
2287	2498	for (chan = 0; chan < tx_channel_count; chan++) {
2288	2499	struct stmmac_tx_queue *tx_q = &priv->tx_queue[chan];
..	..	@@ -2300,12 +2511,12 @@
2300	2511	/* set TX ring length */
2301	2512	for (chan = 0; chan < tx_channels_count; chan++)
2302	2513	stmmac_set_tx_ring_len(priv, priv->ioaddr,
2303		- (DMA_TX_SIZE - 1), chan);
	2514	+ (priv->dma_tx_size - 1), chan);
2304	2515
2305	2516	/* set RX ring length */
2306	2517	for (chan = 0; chan < rx_channels_count; chan++)
2307	2518	stmmac_set_rx_ring_len(priv, priv->ioaddr,
2308		- (DMA_RX_SIZE - 1), chan);
	2519	+ (priv->dma_rx_size - 1), chan);
2309	2520	}
2310	2521
2311	2522	/**
..	..	@@ -2429,6 +2640,22 @@
2429	2640	}
2430	2641	}
2431	2642
	2643	+static void stmmac_mac_config_rss(struct stmmac_priv *priv)
	2644	+{
	2645	+ if (!priv->dma_cap.rssen \|\| !priv->plat->rss_en) {
	2646	+ priv->rss.enable = false;
	2647	+ return;
	2648	+ }
	2649	+
	2650	+ if (priv->dev->features & NETIF_F_RXHASH)
	2651	+ priv->rss.enable = true;
	2652	+ else
	2653	+ priv->rss.enable = false;
	2654	+
	2655	+ stmmac_rss_configure(priv, priv->hw, &priv->rss,
	2656	+ priv->plat->rx_queues_to_use);
	2657	+}
	2658	+
2432	2659	/**
2433	2660	* stmmac_mtl_configuration - Configure MTL
2434	2661	* @priv: driver private structure
..	..	@@ -2473,6 +2700,10 @@
2473	2700	/* Set RX routing */
2474	2701	if (rx_queues_count > 1)
2475	2702	stmmac_mac_config_rx_queues_routing(priv);
	2703	+
	2704	+ /* Receive Side Scaling */
	2705	+ if (rx_queues_count > 1)
	2706	+ stmmac_mac_config_rss(priv);
2476	2707	}
2477	2708
2478	2709	static void stmmac_safety_feat_configuration(struct stmmac_priv *priv)
..	..	@@ -2488,6 +2719,7 @@
2488	2719	/**
2489	2720	* stmmac_hw_setup - setup mac in a usable state.
2490	2721	* @dev : pointer to the device structure.
	2722	+ * @ptp_register: register PTP if set
2491	2723	* Description:
2492	2724	* this is the main function to setup the HW in a usable state because the
2493	2725	* dma engine is reset, the core registers are configured (e.g. AXI,
..	..	@@ -2497,7 +2729,7 @@
2497	2729	* 0 on success and an appropriate (-)ve integer as defined in errno.h
2498	2730	* file on failure.
2499	2731	*/
2500		-static int stmmac_hw_setup(struct net_device *dev, bool init_ptp)
	2732	+static int stmmac_hw_setup(struct net_device *dev, bool ptp_register)
2501	2733	{
2502	2734	struct stmmac_priv *priv = netdev_priv(dev);
2503	2735	u32 rx_cnt = priv->plat->rx_queues_to_use;
..	..	@@ -2553,37 +2785,75 @@
2553	2785
2554	2786	stmmac_mmc_setup(priv);
2555	2787
2556		- if (IS_ENABLED(CONFIG_STMMAC_PTP) && init_ptp) {
	2788	+ if (ptp_register) {
2557	2789	ret = clk_prepare_enable(priv->plat->clk_ptp_ref);
2558	2790	if (ret < 0)
2559		- netdev_warn(priv->dev, "failed to enable PTP reference clock: %d\n", ret);
2560		-
2561		- ret = stmmac_init_ptp(priv);
2562		- if (ret == -EOPNOTSUPP)
2563		- netdev_warn(priv->dev, "PTP not supported by HW\n");
2564		- else if (ret)
2565		- netdev_warn(priv->dev, "PTP init failed\n");
	2791	+ netdev_warn(priv->dev,
	2792	+ "failed to enable PTP reference clock: %pe\n",
	2793	+ ERR_PTR(ret));
2566	2794	}
2567	2795
2568		- priv->tx_lpi_timer = STMMAC_DEFAULT_TWT_LS;
	2796	+ ret = stmmac_init_ptp(priv);
	2797	+ if (ret == -EOPNOTSUPP)
	2798	+ netdev_warn(priv->dev, "PTP not supported by HW\n");
	2799	+ else if (ret)
	2800	+ netdev_warn(priv->dev, "PTP init failed\n");
	2801	+ else if (ptp_register)
	2802	+ stmmac_ptp_register(priv);
	2803	+
	2804	+ priv->eee_tw_timer = STMMAC_DEFAULT_TWT_LS;
	2805	+
	2806	+ /* Convert the timer from msec to usec */
	2807	+ if (!priv->tx_lpi_timer)
	2808	+ priv->tx_lpi_timer = eee_timer * 1000;
2569	2809
2570	2810	if (priv->use_riwt) {
2571		- ret = stmmac_rx_watchdog(priv, priv->ioaddr, MAX_DMA_RIWT, rx_cnt);
2572		- if (!ret)
2573		- priv->rx_riwt = MAX_DMA_RIWT;
	2811	+ if (!priv->rx_riwt)
	2812	+ priv->rx_riwt = DEF_DMA_RIWT;
	2813	+
	2814	+ ret = stmmac_rx_watchdog(priv, priv->ioaddr, priv->rx_riwt, rx_cnt);
2574	2815	}
2575	2816
2576	2817	if (priv->hw->pcs)
2577		- stmmac_pcs_ctrl_ane(priv, priv->hw, 1, priv->hw->ps, 0);
	2818	+ stmmac_pcs_ctrl_ane(priv, priv->ioaddr, 1, priv->hw->ps, 0);
2578	2819
2579	2820	/* set TX and RX rings length */
2580	2821	stmmac_set_rings_length(priv);
2581	2822
2582	2823	/* Enable TSO */
2583	2824	if (priv->tso) {
2584		- for (chan = 0; chan < tx_cnt; chan++)
	2825	+ for (chan = 0; chan < tx_cnt; chan++) {
	2826	+ struct stmmac_tx_queue *tx_q = &priv->tx_queue[chan];
	2827	+
	2828	+ /* TSO and TBS cannot co-exist */
	2829	+ if (tx_q->tbs & STMMAC_TBS_AVAIL)
	2830	+ continue;
	2831	+
2585	2832	stmmac_enable_tso(priv, priv->ioaddr, 1, chan);
	2833	+ }
2586	2834	}
	2835	+
	2836	+ /* Enable Split Header */
	2837	+ if (priv->sph && priv->hw->rx_csum) {
	2838	+ for (chan = 0; chan < rx_cnt; chan++)
	2839	+ stmmac_enable_sph(priv, priv->ioaddr, 1, chan);
	2840	+ }
	2841	+
	2842	+ /* VLAN Tag Insertion */
	2843	+ if (priv->dma_cap.vlins)
	2844	+ stmmac_enable_vlan(priv, priv->hw, STMMAC_VLAN_INSERT);
	2845	+
	2846	+ /* TBS */
	2847	+ for (chan = 0; chan < tx_cnt; chan++) {
	2848	+ struct stmmac_tx_queue *tx_q = &priv->tx_queue[chan];
	2849	+ int enable = tx_q->tbs & STMMAC_TBS_AVAIL;
	2850	+
	2851	+ stmmac_enable_tbs(priv, priv->ioaddr, enable, chan);
	2852	+ }
	2853	+
	2854	+ /* Configure real RX and TX queues */
	2855	+ netif_set_real_num_rx_queues(dev, priv->plat->rx_queues_to_use);
	2856	+ netif_set_real_num_tx_queues(dev, priv->plat->tx_queues_to_use);
2587	2857
2588	2858	/* Start the ball rolling... */
2589	2859	stmmac_start_all_dma(priv);
..	..	@@ -2595,8 +2865,7 @@
2595	2865	{
2596	2866	struct stmmac_priv *priv = netdev_priv(dev);
2597	2867
2598		- if (IS_ENABLED(CONFIG_STMMAC_PTP))
2599		- clk_disable_unprepare(priv->plat->clk_ptp_ref);
	2868	+ clk_disable_unprepare(priv->plat->clk_ptp_ref);
2600	2869	}
2601	2870
2602	2871	/**
..	..	@@ -2611,18 +2880,25 @@
2611	2880	static int stmmac_open(struct net_device *dev)
2612	2881	{
2613	2882	struct stmmac_priv *priv = netdev_priv(dev);
	2883	+ int bfsize = 0;
2614	2884	u32 chan;
2615	2885	int ret;
2616	2886
2617		- if (priv->hw->pcs != STMMAC_PCS_RGMII &&
2618		- priv->hw->pcs != STMMAC_PCS_TBI &&
2619		- priv->hw->pcs != STMMAC_PCS_RTBI) {
	2887	+ ret = pm_runtime_get_sync(priv->device);
	2888	+ if (ret < 0) {
	2889	+ pm_runtime_put_noidle(priv->device);
	2890	+ return ret;
	2891	+ }
	2892	+
	2893	+ if (priv->hw->pcs != STMMAC_PCS_TBI &&
	2894	+ priv->hw->pcs != STMMAC_PCS_RTBI &&
	2895	+ priv->hw->xpcs == NULL) {
2620	2896	ret = stmmac_init_phy(dev);
2621	2897	if (ret) {
2622	2898	netdev_err(priv->dev,
2623	2899	"%s: Cannot attach to PHY (error: %d)\n",
2624	2900	__func__, ret);
2625		- return ret;
	2901	+ goto init_phy_error;
2626	2902	}
2627	2903	}
2628	2904
..	..	@@ -2630,8 +2906,34 @@
2630	2906	memset(&priv->xstats, 0, sizeof(struct stmmac_extra_stats));
2631	2907	priv->xstats.threshold = tc;
2632	2908
2633		- priv->dma_buf_sz = STMMAC_ALIGN(buf_sz);
	2909	+ bfsize = stmmac_set_16kib_bfsize(priv, dev->mtu);
	2910	+ if (bfsize < 0)
	2911	+ bfsize = 0;
	2912	+
	2913	+ if (bfsize < BUF_SIZE_16KiB)
	2914	+ bfsize = stmmac_set_bfsize(dev->mtu, priv->dma_buf_sz);
	2915	+
	2916	+ priv->dma_buf_sz = bfsize;
	2917	+ buf_sz = bfsize;
	2918	+
2634	2919	priv->rx_copybreak = STMMAC_RX_COPYBREAK;
	2920	+
	2921	+ if (!priv->dma_tx_size)
	2922	+ priv->dma_tx_size = priv->plat->dma_tx_size ? priv->plat->dma_tx_size :
	2923	+ DMA_DEFAULT_TX_SIZE;
	2924	+
	2925	+ if (!priv->dma_rx_size)
	2926	+ priv->dma_rx_size = priv->plat->dma_rx_size ? priv->plat->dma_rx_size :
	2927	+ DMA_DEFAULT_RX_SIZE;
	2928	+
	2929	+ /* Earlier check for TBS */
	2930	+ for (chan = 0; chan < priv->plat->tx_queues_to_use; chan++) {
	2931	+ struct stmmac_tx_queue *tx_q = &priv->tx_queue[chan];
	2932	+ int tbs_en = priv->plat->tx_queues_cfg[chan].tbs_en;
	2933	+
	2934	+ /* Setup per-TXQ tbs flag before TX descriptor alloc */
	2935	+ tx_q->tbs \|= tbs_en ? STMMAC_TBS_AVAIL : 0;
	2936	+ }
2635	2937
2636	2938	ret = alloc_dma_desc_resources(priv);
2637	2939	if (ret < 0) {
..	..	@@ -2647,16 +2949,26 @@
2647	2949	goto init_error;
2648	2950	}
2649	2951
	2952	+ if (priv->plat->serdes_powerup) {
	2953	+ ret = priv->plat->serdes_powerup(dev, priv->plat->bsp_priv);
	2954	+ if (ret < 0) {
	2955	+ netdev_err(priv->dev, "%s: Serdes powerup failed\n",
	2956	+ __func__);
	2957	+ goto init_error;
	2958	+ }
	2959	+ }
	2960	+
2650	2961	ret = stmmac_hw_setup(dev, true);
2651	2962	if (ret < 0) {
2652	2963	netdev_err(priv->dev, "%s: Hw setup failed\n", __func__);
2653	2964	goto init_error;
2654	2965	}
2655	2966
2656		- stmmac_init_tx_coalesce(priv);
	2967	+ stmmac_init_coalesce(priv);
2657	2968
2658		- if (dev->phydev)
2659		- phy_start(dev->phydev);
	2969	+ phylink_start(priv->phylink);
	2970	+ /* We may have called phylink_speed_down before */
	2971	+ phylink_speed_up(priv->phylink);
2660	2972
2661	2973	/* Request the IRQ lines */
2662	2974	ret = request_irq(dev->irq, stmmac_interrupt,
..	..	@@ -2703,8 +3015,7 @@
2703	3015	wolirq_error:
2704	3016	free_irq(dev->irq, dev);
2705	3017	irq_error:
2706		- if (dev->phydev)
2707		- phy_stop(dev->phydev);
	3018	+ phylink_stop(priv->phylink);
2708	3019
2709	3020	for (chan = 0; chan < priv->plat->tx_queues_to_use; chan++)
2710	3021	del_timer_sync(&priv->tx_queue[chan].txtimer);
..	..	@@ -2713,9 +3024,9 @@
2713	3024	init_error:
2714	3025	free_dma_desc_resources(priv);
2715	3026	dma_desc_error:
2716		- if (dev->phydev)
2717		- phy_disconnect(dev->phydev);
2718		-
	3027	+ phylink_disconnect_phy(priv->phylink);
	3028	+init_phy_error:
	3029	+ pm_runtime_put(priv->device);
2719	3030	return ret;
2720	3031	}
2721	3032
..	..	@@ -2730,14 +3041,14 @@
2730	3041	struct stmmac_priv *priv = netdev_priv(dev);
2731	3042	u32 chan;
2732	3043
	3044	+ if (device_may_wakeup(priv->device))
	3045	+ phylink_speed_down(priv->phylink, false);
2733	3046	/* Stop and disconnect the PHY */
2734		- if (dev->phydev) {
2735		- phy_stop(dev->phydev);
2736		- phy_disconnect(dev->phydev);
2737		- if (priv->plat->integrated_phy_power)
2738		- priv->plat->integrated_phy_power(priv->plat->bsp_priv,
2739		- false);
2740		- }
	3047	+ phylink_stop(priv->phylink);
	3048	+ phylink_disconnect_phy(priv->phylink);
	3049	+
	3050	+ if (priv->plat->integrated_phy_power)
	3051	+ priv->plat->integrated_phy_power(priv->plat->bsp_priv, false);
2741	3052
2742	3053	stmmac_disable_all_queues(priv);
2743	3054
..	..	@@ -2765,12 +3076,48 @@
2765	3076	/* Disable the MAC Rx/Tx */
2766	3077	stmmac_mac_set(priv, priv->ioaddr, false);
2767	3078
	3079	+ /* Powerdown Serdes if there is */
	3080	+ if (priv->plat->serdes_powerdown)
	3081	+ priv->plat->serdes_powerdown(dev, priv->plat->bsp_priv);
	3082	+
2768	3083	netif_carrier_off(dev);
2769	3084
2770		- if (IS_ENABLED(CONFIG_STMMAC_PTP))
2771		- stmmac_release_ptp(priv);
	3085	+ stmmac_release_ptp(priv);
	3086	+
	3087	+ pm_runtime_put(priv->device);
2772	3088
2773	3089	return 0;
	3090	+}
	3091	+
	3092	+static bool stmmac_vlan_insert(struct stmmac_priv priv, struct sk_buff skb,
	3093	+ struct stmmac_tx_queue *tx_q)
	3094	+{
	3095	+ u16 tag = 0x0, inner_tag = 0x0;
	3096	+ u32 inner_type = 0x0;
	3097	+ struct dma_desc *p;
	3098	+
	3099	+ if (!priv->dma_cap.vlins)
	3100	+ return false;
	3101	+ if (!skb_vlan_tag_present(skb))
	3102	+ return false;
	3103	+ if (skb->vlan_proto == htons(ETH_P_8021AD)) {
	3104	+ inner_tag = skb_vlan_tag_get(skb);
	3105	+ inner_type = STMMAC_VLAN_INSERT;
	3106	+ }
	3107	+
	3108	+ tag = skb_vlan_tag_get(skb);
	3109	+
	3110	+ if (tx_q->tbs & STMMAC_TBS_AVAIL)
	3111	+ p = &tx_q->dma_entx[tx_q->cur_tx].basic;
	3112	+ else
	3113	+ p = &tx_q->dma_tx[tx_q->cur_tx];
	3114	+
	3115	+ if (stmmac_set_desc_vlan_tag(priv, p, tag, inner_tag, inner_type))
	3116	+ return false;
	3117	+
	3118	+ stmmac_set_tx_owner(priv, p);
	3119	+ tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, priv->dma_tx_size);
	3120	+ return true;
2774	3121	}
2775	3122
2776	3123	/**
..	..	@@ -2778,13 +3125,13 @@
2778	3125	* @priv: driver private structure
2779	3126	* @des: buffer start address
2780	3127	* @total_len: total length to fill in descriptors
2781		- * @last_segmant: condition for the last descriptor
	3128	+ * @last_segment: condition for the last descriptor
2782	3129	* @queue: TX queue index
2783	3130	* Description:
2784	3131	* This function fills descriptor and request new descriptors according to
2785	3132	* buffer length to fill
2786	3133	*/
2787		-static void stmmac_tso_allocator(struct stmmac_priv *priv, unsigned int des,
	3134	+static void stmmac_tso_allocator(struct stmmac_priv *priv, dma_addr_t des,
2788	3135	int total_len, bool last_segment, u32 queue)
2789	3136	{
2790	3137	struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
..	..	@@ -2795,11 +3142,23 @@
2795	3142	tmp_len = total_len;
2796	3143
2797	3144	while (tmp_len > 0) {
2798		- tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, DMA_TX_SIZE);
2799		- WARN_ON(tx_q->tx_skbuff[tx_q->cur_tx]);
2800		- desc = tx_q->dma_tx + tx_q->cur_tx;
	3145	+ dma_addr_t curr_addr;
2801	3146
2802		- desc->des0 = cpu_to_le32(des + (total_len - tmp_len));
	3147	+ tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx,
	3148	+ priv->dma_tx_size);
	3149	+ WARN_ON(tx_q->tx_skbuff[tx_q->cur_tx]);
	3150	+
	3151	+ if (tx_q->tbs & STMMAC_TBS_AVAIL)
	3152	+ desc = &tx_q->dma_entx[tx_q->cur_tx].basic;
	3153	+ else
	3154	+ desc = &tx_q->dma_tx[tx_q->cur_tx];
	3155	+
	3156	+ curr_addr = des + (total_len - tmp_len);
	3157	+ if (priv->dma_cap.addr64 <= 32)
	3158	+ desc->des0 = cpu_to_le32(curr_addr);
	3159	+ else
	3160	+ stmmac_set_desc_addr(priv, desc, curr_addr);
	3161	+
2803	3162	buff_size = tmp_len >= TSO_MAX_BUFF_SIZE ?
2804	3163	TSO_MAX_BUFF_SIZE : tmp_len;
2805	3164
..	..	@@ -2843,16 +3202,19 @@
2843	3202	{
2844	3203	struct dma_desc desc, first, *mss_desc = NULL;
2845	3204	struct stmmac_priv *priv = netdev_priv(dev);
	3205	+ int desc_size, tmp_pay_len = 0, first_tx;
2846	3206	int nfrags = skb_shinfo(skb)->nr_frags;
2847	3207	u32 queue = skb_get_queue_mapping(skb);
2848		- unsigned int first_entry, des;
2849		- u8 proto_hdr_len, hdr;
	3208	+ unsigned int first_entry, tx_packets;
2850	3209	struct stmmac_tx_queue *tx_q;
2851		- int tmp_pay_len = 0;
	3210	+ bool has_vlan, set_ic;
	3211	+ u8 proto_hdr_len, hdr;
2852	3212	u32 pay_len, mss;
	3213	+ dma_addr_t des;
2853	3214	int i;
2854	3215
2855	3216	tx_q = &priv->tx_queue[queue];
	3217	+ first_tx = tx_q->cur_tx;
2856	3218
2857	3219	/* Compute header lengths */
2858	3220	if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) {
..	..	@@ -2883,10 +3245,15 @@
2883	3245
2884	3246	/* set new MSS value if needed */
2885	3247	if (mss != tx_q->mss) {
2886		- mss_desc = tx_q->dma_tx + tx_q->cur_tx;
	3248	+ if (tx_q->tbs & STMMAC_TBS_AVAIL)
	3249	+ mss_desc = &tx_q->dma_entx[tx_q->cur_tx].basic;
	3250	+ else
	3251	+ mss_desc = &tx_q->dma_tx[tx_q->cur_tx];
	3252	+
2887	3253	stmmac_set_mss(priv, mss_desc, mss);
2888	3254	tx_q->mss = mss;
2889		- tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, DMA_TX_SIZE);
	3255	+ tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx,
	3256	+ priv->dma_tx_size);
2890	3257	WARN_ON(tx_q->tx_skbuff[tx_q->cur_tx]);
2891	3258	}
2892	3259
..	..	@@ -2897,11 +3264,20 @@
2897	3264	skb->data_len);
2898	3265	}
2899	3266
	3267	+ /* Check if VLAN can be inserted by HW */
	3268	+ has_vlan = stmmac_vlan_insert(priv, skb, tx_q);
	3269	+
2900	3270	first_entry = tx_q->cur_tx;
2901	3271	WARN_ON(tx_q->tx_skbuff[first_entry]);
2902	3272
2903		- desc = tx_q->dma_tx + first_entry;
	3273	+ if (tx_q->tbs & STMMAC_TBS_AVAIL)
	3274	+ desc = &tx_q->dma_entx[first_entry].basic;
	3275	+ else
	3276	+ desc = &tx_q->dma_tx[first_entry];
2904	3277	first = desc;
	3278	+
	3279	+ if (has_vlan)
	3280	+ stmmac_set_desc_vlan(priv, first, STMMAC_VLAN_INSERT);
2905	3281
2906	3282	/* first descriptor: fill Headers on Buf1 */
2907	3283	des = dma_map_single(priv->device, skb->data, skb_headlen(skb),
..	..	@@ -2912,14 +3288,21 @@
2912	3288	tx_q->tx_skbuff_dma[first_entry].buf = des;
2913	3289	tx_q->tx_skbuff_dma[first_entry].len = skb_headlen(skb);
2914	3290
2915		- first->des0 = cpu_to_le32(des);
	3291	+ if (priv->dma_cap.addr64 <= 32) {
	3292	+ first->des0 = cpu_to_le32(des);
2916	3293
2917		- /* Fill start of payload in buff2 of first descriptor */
2918		- if (pay_len)
2919		- first->des1 = cpu_to_le32(des + proto_hdr_len);
	3294	+ /* Fill start of payload in buff2 of first descriptor */
	3295	+ if (pay_len)
	3296	+ first->des1 = cpu_to_le32(des + proto_hdr_len);
2920	3297
2921		- /* If needed take extra descriptors to fill the remaining payload */
2922		- tmp_pay_len = pay_len - TSO_MAX_BUFF_SIZE;
	3298	+ /* If needed take extra descriptors to fill the remaining payload */
	3299	+ tmp_pay_len = pay_len - TSO_MAX_BUFF_SIZE;
	3300	+ } else {
	3301	+ stmmac_set_desc_addr(priv, first, des);
	3302	+ tmp_pay_len = pay_len;
	3303	+ des += proto_hdr_len;
	3304	+ pay_len = 0;
	3305	+ }
2923	3306
2924	3307	stmmac_tso_allocator(priv, des, tmp_pay_len, (nfrags == 0), queue);
2925	3308
..	..	@@ -2946,12 +3329,38 @@
2946	3329	/* Only the last descriptor gets to point to the skb. */
2947	3330	tx_q->tx_skbuff[tx_q->cur_tx] = skb;
2948	3331
	3332	+ /* Manage tx mitigation */
	3333	+ tx_packets = (tx_q->cur_tx + 1) - first_tx;
	3334	+ tx_q->tx_count_frames += tx_packets;
	3335	+
	3336	+ if ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && priv->hwts_tx_en)
	3337	+ set_ic = true;
	3338	+ else if (!priv->tx_coal_frames)
	3339	+ set_ic = false;
	3340	+ else if (tx_packets > priv->tx_coal_frames)
	3341	+ set_ic = true;
	3342	+ else if ((tx_q->tx_count_frames % priv->tx_coal_frames) < tx_packets)
	3343	+ set_ic = true;
	3344	+ else
	3345	+ set_ic = false;
	3346	+
	3347	+ if (set_ic) {
	3348	+ if (tx_q->tbs & STMMAC_TBS_AVAIL)
	3349	+ desc = &tx_q->dma_entx[tx_q->cur_tx].basic;
	3350	+ else
	3351	+ desc = &tx_q->dma_tx[tx_q->cur_tx];
	3352	+
	3353	+ tx_q->tx_count_frames = 0;
	3354	+ stmmac_set_tx_ic(priv, desc);
	3355	+ priv->xstats.tx_set_ic_bit++;
	3356	+ }
	3357	+
2949	3358	/* We've used all descriptors we need for this skb, however,
2950	3359	* advance cur_tx so that it references a fresh descriptor.
2951	3360	* ndo_start_xmit will fill this descriptor the next time it's
2952	3361	* called and stmmac_tx_clean may clean up to this descriptor.
2953	3362	*/
2954		- tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, DMA_TX_SIZE);
	3363	+ tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, priv->dma_tx_size);
2955	3364
2956	3365	if (unlikely(stmmac_tx_avail(priv, queue) <= (MAX_SKB_FRAGS + 1))) {
2957	3366	netif_dbg(priv, hw, priv->dev, "%s: stop transmitted packets\n",
..	..	@@ -2963,18 +3372,8 @@
2963	3372	priv->xstats.tx_tso_frames++;
2964	3373	priv->xstats.tx_tso_nfrags += nfrags;
2965	3374
2966		- /* Manage tx mitigation */
2967		- tx_q->tx_count_frames += nfrags + 1;
2968		- if (likely(priv->tx_coal_frames > tx_q->tx_count_frames) &&
2969		- !(priv->synopsys_id >= DWMAC_CORE_4_00 &&
2970		- (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
2971		- priv->hwts_tx_en)) {
2972		- stmmac_tx_timer_arm(priv, queue);
2973		- } else {
2974		- tx_q->tx_count_frames = 0;
2975		- stmmac_set_tx_ic(priv, desc);
2976		- priv->xstats.tx_set_ic_bit++;
2977		- }
	3375	+ if (priv->sarc_type)
	3376	+ stmmac_set_desc_sarc(priv, first, priv->sarc_type);
2978	3377
2979	3378	skb_tx_timestamp(skb);
2980	3379
..	..	@@ -3013,16 +3412,18 @@
3013	3412	pr_info("%s: curr=%d dirty=%d f=%d, e=%d, f_p=%p, nfrags %d\n",
3014	3413	__func__, tx_q->cur_tx, tx_q->dirty_tx, first_entry,
3015	3414	tx_q->cur_tx, first, nfrags);
3016		-
3017		- stmmac_display_ring(priv, (void *)tx_q->dma_tx, DMA_TX_SIZE, 0);
3018		-
3019	3415	pr_info(">>> frame to be transmitted: ");
3020	3416	print_pkt(skb->data, skb_headlen(skb));
3021	3417	}
3022	3418
3023	3419	netdev_tx_sent_queue(netdev_get_tx_queue(dev, queue), skb->len);
3024	3420
3025		- tx_q->tx_tail_addr = tx_q->dma_tx_phy + (tx_q->cur_tx * sizeof(*desc));
	3421	+ if (tx_q->tbs & STMMAC_TBS_AVAIL)
	3422	+ desc_size = sizeof(struct dma_edesc);
	3423	+ else
	3424	+ desc_size = sizeof(struct dma_desc);
	3425	+
	3426	+ tx_q->tx_tail_addr = tx_q->dma_tx_phy + (tx_q->cur_tx * desc_size);
3026	3427	stmmac_set_tx_tail_ptr(priv, priv->ioaddr, tx_q->tx_tail_addr, queue);
3027	3428	stmmac_tx_timer_arm(priv, queue);
3028	3429
..	..	@@ -3045,20 +3446,22 @@
3045	3446	*/
3046	3447	static netdev_tx_t stmmac_xmit(struct sk_buff skb, struct net_device dev)
3047	3448	{
	3449	+ unsigned int first_entry, tx_packets, enh_desc;
3048	3450	struct stmmac_priv *priv = netdev_priv(dev);
3049	3451	unsigned int nopaged_len = skb_headlen(skb);
3050	3452	int i, csum_insertion = 0, is_jumbo = 0;
3051	3453	u32 queue = skb_get_queue_mapping(skb);
3052	3454	int nfrags = skb_shinfo(skb)->nr_frags;
3053	3455	int gso = skb_shinfo(skb)->gso_type;
3054		- int entry;
3055		- unsigned int first_entry;
	3456	+ struct dma_edesc *tbs_desc = NULL;
	3457	+ int entry, desc_size, first_tx;
3056	3458	struct dma_desc desc, first;
3057	3459	struct stmmac_tx_queue *tx_q;
3058		- unsigned int enh_desc;
3059		- unsigned int des;
	3460	+ bool has_vlan, set_ic;
	3461	+ dma_addr_t des;
3060	3462
3061	3463	tx_q = &priv->tx_queue[queue];
	3464	+ first_tx = tx_q->cur_tx;
3062	3465
3063	3466	if (priv->tx_path_in_lpi_mode)
3064	3467	stmmac_disable_eee_mode(priv);
..	..	@@ -3083,6 +3486,9 @@
3083	3486	return NETDEV_TX_BUSY;
3084	3487	}
3085	3488
	3489	+ /* Check if VLAN can be inserted by HW */
	3490	+ has_vlan = stmmac_vlan_insert(priv, skb, tx_q);
	3491	+
3086	3492	entry = tx_q->cur_tx;
3087	3493	first_entry = entry;
3088	3494	WARN_ON(tx_q->tx_skbuff[first_entry]);
..	..	@@ -3091,10 +3497,15 @@
3091	3497
3092	3498	if (likely(priv->extend_desc))
3093	3499	desc = (struct dma_desc *)(tx_q->dma_etx + entry);
	3500	+ else if (tx_q->tbs & STMMAC_TBS_AVAIL)
	3501	+ desc = &tx_q->dma_entx[entry].basic;
3094	3502	else
3095	3503	desc = tx_q->dma_tx + entry;
3096	3504
3097	3505	first = desc;
	3506	+
	3507	+ if (has_vlan)
	3508	+ stmmac_set_desc_vlan(priv, first, STMMAC_VLAN_INSERT);
3098	3509
3099	3510	enh_desc = priv->plat->enh_desc;
3100	3511	/* To program the descriptors according to the size of the frame */
..	..	@@ -3112,11 +3523,13 @@
3112	3523	int len = skb_frag_size(frag);
3113	3524	bool last_segment = (i == (nfrags - 1));
3114	3525
3115		- entry = STMMAC_GET_ENTRY(entry, DMA_TX_SIZE);
	3526	+ entry = STMMAC_GET_ENTRY(entry, priv->dma_tx_size);
3116	3527	WARN_ON(tx_q->tx_skbuff[entry]);
3117	3528
3118	3529	if (likely(priv->extend_desc))
3119	3530	desc = (struct dma_desc *)(tx_q->dma_etx + entry);
	3531	+ else if (tx_q->tbs & STMMAC_TBS_AVAIL)
	3532	+ desc = &tx_q->dma_entx[entry].basic;
3120	3533	else
3121	3534	desc = tx_q->dma_tx + entry;
3122	3535
..	..	@@ -3141,28 +3554,51 @@
3141	3554	/* Only the last descriptor gets to point to the skb. */
3142	3555	tx_q->tx_skbuff[entry] = skb;
3143	3556
	3557	+ /* According to the coalesce parameter the IC bit for the latest
	3558	+ * segment is reset and the timer re-started to clean the tx status.
	3559	+ * This approach takes care about the fragments: desc is the first
	3560	+ * element in case of no SG.
	3561	+ */
	3562	+ tx_packets = (entry + 1) - first_tx;
	3563	+ tx_q->tx_count_frames += tx_packets;
	3564	+
	3565	+ if ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && priv->hwts_tx_en)
	3566	+ set_ic = true;
	3567	+ else if (!priv->tx_coal_frames)
	3568	+ set_ic = false;
	3569	+ else if (tx_packets > priv->tx_coal_frames)
	3570	+ set_ic = true;
	3571	+ else if ((tx_q->tx_count_frames % priv->tx_coal_frames) < tx_packets)
	3572	+ set_ic = true;
	3573	+ else
	3574	+ set_ic = false;
	3575	+
	3576	+ if (set_ic) {
	3577	+ if (likely(priv->extend_desc))
	3578	+ desc = &tx_q->dma_etx[entry].basic;
	3579	+ else if (tx_q->tbs & STMMAC_TBS_AVAIL)
	3580	+ desc = &tx_q->dma_entx[entry].basic;
	3581	+ else
	3582	+ desc = &tx_q->dma_tx[entry];
	3583	+
	3584	+ tx_q->tx_count_frames = 0;
	3585	+ stmmac_set_tx_ic(priv, desc);
	3586	+ priv->xstats.tx_set_ic_bit++;
	3587	+ }
	3588	+
3144	3589	/* We've used all descriptors we need for this skb, however,
3145	3590	* advance cur_tx so that it references a fresh descriptor.
3146	3591	* ndo_start_xmit will fill this descriptor the next time it's
3147	3592	* called and stmmac_tx_clean may clean up to this descriptor.
3148	3593	*/
3149		- entry = STMMAC_GET_ENTRY(entry, DMA_TX_SIZE);
	3594	+ entry = STMMAC_GET_ENTRY(entry, priv->dma_tx_size);
3150	3595	tx_q->cur_tx = entry;
3151	3596
3152	3597	if (netif_msg_pktdata(priv)) {
3153		- void *tx_head;
3154		-
3155	3598	netdev_dbg(priv->dev,
3156	3599	"%s: curr=%d dirty=%d f=%d, e=%d, first=%p, nfrags=%d",
3157	3600	__func__, tx_q->cur_tx, tx_q->dirty_tx, first_entry,
3158	3601	entry, first, nfrags);
3159		-
3160		- if (priv->extend_desc)
3161		- tx_head = (void *)tx_q->dma_etx;
3162		- else
3163		- tx_head = (void *)tx_q->dma_tx;
3164		-
3165		- stmmac_display_ring(priv, tx_head, DMA_TX_SIZE, false);
3166	3602
3167	3603	netdev_dbg(priv->dev, ">>> frame to be transmitted: ");
3168	3604	print_pkt(skb->data, skb->len);
..	..	@@ -3176,22 +3612,8 @@
3176	3612
3177	3613	dev->stats.tx_bytes += skb->len;
3178	3614
3179		- /* According to the coalesce parameter the IC bit for the latest
3180		- * segment is reset and the timer re-started to clean the tx status.
3181		- * This approach takes care about the fragments: desc is the first
3182		- * element in case of no SG.
3183		- */
3184		- tx_q->tx_count_frames += nfrags + 1;
3185		- if (likely(priv->tx_coal_frames > tx_q->tx_count_frames) &&
3186		- !(priv->synopsys_id >= DWMAC_CORE_4_00 &&
3187		- (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
3188		- priv->hwts_tx_en)) {
3189		- stmmac_tx_timer_arm(priv, queue);
3190		- } else {
3191		- tx_q->tx_count_frames = 0;
3192		- stmmac_set_tx_ic(priv, desc);
3193		- priv->xstats.tx_set_ic_bit++;
3194		- }
	3615	+ if (priv->sarc_type)
	3616	+ stmmac_set_desc_sarc(priv, first, priv->sarc_type);
3195	3617
3196	3618	skb_tx_timestamp(skb);
3197	3619
..	..	@@ -3223,11 +3645,18 @@
3223	3645
3224	3646	/* Prepare the first descriptor setting the OWN bit too */
3225	3647	stmmac_prepare_tx_desc(priv, first, 1, nopaged_len,
3226		- csum_insertion, priv->mode, 1, last_segment,
	3648	+ csum_insertion, priv->mode, 0, last_segment,
3227	3649	skb->len);
3228		- } else {
3229		- stmmac_set_tx_owner(priv, first);
3230	3650	}
	3651	+
	3652	+ if (tx_q->tbs & STMMAC_TBS_EN) {
	3653	+ struct timespec64 ts = ns_to_timespec64(skb->tstamp);
	3654	+
	3655	+ tbs_desc = &tx_q->dma_entx[first_entry];
	3656	+ stmmac_set_desc_tbs(priv, tbs_desc, ts.tv_sec, ts.tv_nsec);
	3657	+ }
	3658	+
	3659	+ stmmac_set_tx_owner(priv, first);
3231	3660
3232	3661	/* The own bit must be the latest setting done when prepare the
3233	3662	* descriptor and then barrier is needed to make sure that
..	..	@@ -3239,7 +3668,14 @@
3239	3668
3240	3669	stmmac_enable_dma_transmission(priv, priv->ioaddr);
3241	3670
3242		- tx_q->tx_tail_addr = tx_q->dma_tx_phy + (tx_q->cur_tx * sizeof(*desc));
	3671	+ if (likely(priv->extend_desc))
	3672	+ desc_size = sizeof(struct dma_extended_desc);
	3673	+ else if (tx_q->tbs & STMMAC_TBS_AVAIL)
	3674	+ desc_size = sizeof(struct dma_edesc);
	3675	+ else
	3676	+ desc_size = sizeof(struct dma_desc);
	3677	+
	3678	+ tx_q->tx_tail_addr = tx_q->dma_tx_phy + (tx_q->cur_tx * desc_size);
3243	3679	stmmac_set_tx_tail_ptr(priv, priv->ioaddr, tx_q->tx_tail_addr, queue);
3244	3680	stmmac_tx_timer_arm(priv, queue);
3245	3681
..	..	@@ -3273,15 +3709,6 @@
3273	3709	}
3274	3710	}
3275	3711
3276		-
3277		-static inline int stmmac_rx_threshold_count(struct stmmac_rx_queue *rx_q)
3278		-{
3279		- if (rx_q->rx_zeroc_thresh < STMMAC_RX_THRESH)
3280		- return 0;
3281		-
3282		- return 1;
3283		-}
3284		-
3285	3712	/**
3286	3713	* stmmac_rx_refill - refill used skb preallocated buffers
3287	3714	* @priv: driver private structure
..	..	@@ -3292,63 +3719,115 @@
3292	3719	static inline void stmmac_rx_refill(struct stmmac_priv *priv, u32 queue)
3293	3720	{
3294	3721	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
3295		- int dirty = stmmac_rx_dirty(priv, queue);
	3722	+ int len, dirty = stmmac_rx_dirty(priv, queue);
3296	3723	unsigned int entry = rx_q->dirty_rx;
	3724	+ gfp_t gfp = (GFP_ATOMIC \| __GFP_NOWARN);
3297	3725
3298		- int bfsize = priv->dma_buf_sz;
	3726	+ if (priv->dma_cap.addr64 <= 32)
	3727	+ gfp \|= GFP_DMA32;
	3728	+
	3729	+ len = DIV_ROUND_UP(priv->dma_buf_sz, PAGE_SIZE) * PAGE_SIZE;
3299	3730
3300	3731	while (dirty-- > 0) {
	3732	+ struct stmmac_rx_buffer *buf = &rx_q->buf_pool[entry];
3301	3733	struct dma_desc *p;
	3734	+ bool use_rx_wd;
3302	3735
3303	3736	if (priv->extend_desc)
3304	3737	p = (struct dma_desc *)(rx_q->dma_erx + entry);
3305	3738	else
3306	3739	p = rx_q->dma_rx + entry;
3307	3740
3308		- if (likely(!rx_q->rx_skbuff[entry])) {
3309		- struct sk_buff *skb;
3310		-
3311		- skb = netdev_alloc_skb_ip_align(priv->dev, bfsize);
3312		- if (unlikely(!skb)) {
3313		- /* so for a while no zero-copy! */
3314		- rx_q->rx_zeroc_thresh = STMMAC_RX_THRESH;
3315		- if (unlikely(net_ratelimit()))
3316		- dev_err(priv->device,
3317		- "fail to alloc skb entry %d\n",
3318		- entry);
	3741	+ if (!buf->page) {
	3742	+ buf->page = page_pool_alloc_pages(rx_q->page_pool, gfp);
	3743	+ if (!buf->page)
3319	3744	break;
3320		- }
3321		-
3322		- rx_q->rx_skbuff[entry] = skb;
3323		- rx_q->rx_skbuff_dma[entry] =
3324		- dma_map_single(priv->device, skb->data, bfsize,
3325		- DMA_FROM_DEVICE);
3326		- if (dma_mapping_error(priv->device,
3327		- rx_q->rx_skbuff_dma[entry])) {
3328		- netdev_err(priv->dev, "Rx DMA map failed\n");
3329		- dev_kfree_skb(skb);
3330		- break;
3331		- }
3332		-
3333		- stmmac_set_desc_addr(priv, p, rx_q->rx_skbuff_dma[entry]);
3334		- stmmac_refill_desc3(priv, rx_q, p);
3335		-
3336		- if (rx_q->rx_zeroc_thresh > 0)
3337		- rx_q->rx_zeroc_thresh--;
3338		-
3339		- netif_dbg(priv, rx_status, priv->dev,
3340		- "refill entry #%d\n", entry);
3341	3745	}
3342		- dma_wmb();
3343	3746
3344		- stmmac_set_rx_owner(priv, p, priv->use_riwt);
	3747	+ if (priv->sph && !buf->sec_page) {
	3748	+ buf->sec_page = page_pool_alloc_pages(rx_q->page_pool, gfp);
	3749	+ if (!buf->sec_page)
	3750	+ break;
	3751	+
	3752	+ buf->sec_addr = page_pool_get_dma_addr(buf->sec_page);
	3753	+ }
	3754	+
	3755	+ buf->addr = page_pool_get_dma_addr(buf->page);
	3756	+ stmmac_set_desc_addr(priv, p, buf->addr);
	3757	+ if (priv->sph)
	3758	+ stmmac_set_desc_sec_addr(priv, p, buf->sec_addr, true);
	3759	+ else
	3760	+ stmmac_set_desc_sec_addr(priv, p, buf->sec_addr, false);
	3761	+ stmmac_refill_desc3(priv, rx_q, p);
	3762	+
	3763	+ rx_q->rx_count_frames++;
	3764	+ rx_q->rx_count_frames += priv->rx_coal_frames;
	3765	+ if (rx_q->rx_count_frames > priv->rx_coal_frames)
	3766	+ rx_q->rx_count_frames = 0;
	3767	+
	3768	+ use_rx_wd = !priv->rx_coal_frames;
	3769	+ use_rx_wd \|= rx_q->rx_count_frames > 0;
	3770	+ if (!priv->use_riwt)
	3771	+ use_rx_wd = false;
3345	3772
3346	3773	dma_wmb();
	3774	+ stmmac_set_rx_owner(priv, p, use_rx_wd);
3347	3775
3348		- entry = STMMAC_GET_ENTRY(entry, DMA_RX_SIZE);
	3776	+ entry = STMMAC_GET_ENTRY(entry, priv->dma_rx_size);
3349	3777	}
3350	3778	rx_q->dirty_rx = entry;
	3779	+ rx_q->rx_tail_addr = rx_q->dma_rx_phy +
	3780	+ (rx_q->dirty_rx * sizeof(struct dma_desc));
3351	3781	stmmac_set_rx_tail_ptr(priv, priv->ioaddr, rx_q->rx_tail_addr, queue);
	3782	+}
	3783	+
	3784	+static unsigned int stmmac_rx_buf1_len(struct stmmac_priv *priv,
	3785	+ struct dma_desc *p,
	3786	+ int status, unsigned int len)
	3787	+{
	3788	+ unsigned int plen = 0, hlen = 0;
	3789	+ int coe = priv->hw->rx_csum;
	3790	+
	3791	+ /* Not first descriptor, buffer is always zero */
	3792	+ if (priv->sph && len)
	3793	+ return 0;
	3794	+
	3795	+ /* First descriptor, get split header length */
	3796	+ stmmac_get_rx_header_len(priv, p, &hlen);
	3797	+ if (priv->sph && hlen) {
	3798	+ priv->xstats.rx_split_hdr_pkt_n++;
	3799	+ return hlen;
	3800	+ }
	3801	+
	3802	+ /* First descriptor, not last descriptor and not split header */
	3803	+ if (status & rx_not_ls)
	3804	+ return priv->dma_buf_sz;
	3805	+
	3806	+ plen = stmmac_get_rx_frame_len(priv, p, coe);
	3807	+
	3808	+ /* First descriptor and last descriptor and not split header */
	3809	+ return min_t(unsigned int, priv->dma_buf_sz, plen);
	3810	+}
	3811	+
	3812	+static unsigned int stmmac_rx_buf2_len(struct stmmac_priv *priv,
	3813	+ struct dma_desc *p,
	3814	+ int status, unsigned int len)
	3815	+{
	3816	+ int coe = priv->hw->rx_csum;
	3817	+ unsigned int plen = 0;
	3818	+
	3819	+ /* Not split header, buffer is not available */
	3820	+ if (!priv->sph)
	3821	+ return 0;
	3822	+
	3823	+ /* Not last descriptor */
	3824	+ if (status & rx_not_ls)
	3825	+ return priv->dma_buf_sz;
	3826	+
	3827	+ plen = stmmac_get_rx_frame_len(priv, p, coe);
	3828	+
	3829	+ /* Last descriptor */
	3830	+ return plen - len;
3352	3831	}
3353	3832
3354	3833	/**
..	..	@@ -3363,30 +3842,54 @@
3363	3842	{
3364	3843	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
3365	3844	struct stmmac_channel *ch = &priv->channel[queue];
	3845	+ unsigned int count = 0, error = 0, len = 0;
	3846	+ int status = 0, coe = priv->hw->rx_csum;
3366	3847	unsigned int next_entry = rx_q->cur_rx;
3367		- int coe = priv->hw->rx_csum;
3368		- unsigned int count = 0;
3369		- bool xmac;
3370		-
3371		- xmac = priv->plat->has_gmac4 \|\| priv->plat->has_xgmac;
	3848	+ unsigned int desc_size;
	3849	+ struct sk_buff *skb = NULL;
3372	3850
3373	3851	if (netif_msg_rx_status(priv)) {
3374	3852	void *rx_head;
3375	3853
3376	3854	netdev_dbg(priv->dev, "%s: descriptor ring:\n", __func__);
3377		- if (priv->extend_desc)
	3855	+ if (priv->extend_desc) {
3378	3856	rx_head = (void *)rx_q->dma_erx;
3379		- else
	3857	+ desc_size = sizeof(struct dma_extended_desc);
	3858	+ } else {
3380	3859	rx_head = (void *)rx_q->dma_rx;
	3860	+ desc_size = sizeof(struct dma_desc);
	3861	+ }
3381	3862
3382		- stmmac_display_ring(priv, rx_head, DMA_RX_SIZE, true);
	3863	+ stmmac_display_ring(priv, rx_head, priv->dma_rx_size, true,
	3864	+ rx_q->dma_rx_phy, desc_size);
3383	3865	}
3384	3866	while (count < limit) {
3385		- int entry, status;
3386		- struct dma_desc *p;
3387		- struct dma_desc *np;
	3867	+ unsigned int buf1_len = 0, buf2_len = 0;
	3868	+ enum pkt_hash_types hash_type;
	3869	+ struct stmmac_rx_buffer *buf;
	3870	+ struct dma_desc np, p;
	3871	+ int entry;
	3872	+ u32 hash;
3388	3873
	3874	+ if (!count && rx_q->state_saved) {
	3875	+ skb = rx_q->state.skb;
	3876	+ error = rx_q->state.error;
	3877	+ len = rx_q->state.len;
	3878	+ } else {
	3879	+ rx_q->state_saved = false;
	3880	+ skb = NULL;
	3881	+ error = 0;
	3882	+ len = 0;
	3883	+ }
	3884	+
	3885	+ if ((count >= limit - 1) && limit > 1)
	3886	+ break;
	3887	+
	3888	+read_again:
	3889	+ buf1_len = 0;
	3890	+ buf2_len = 0;
3389	3891	entry = next_entry;
	3892	+ buf = &rx_q->buf_pool[entry];
3390	3893
3391	3894	if (priv->extend_desc)
3392	3895	p = (struct dma_desc *)(rx_q->dma_erx + entry);
..	..	@@ -3400,9 +3903,8 @@
3400	3903	if (unlikely(status & dma_own))
3401	3904	break;
3402	3905
3403		- count++;
3404		-
3405		- rx_q->cur_rx = STMMAC_GET_ENTRY(rx_q->cur_rx, DMA_RX_SIZE);
	3906	+ rx_q->cur_rx = STMMAC_GET_ENTRY(rx_q->cur_rx,
	3907	+ priv->dma_rx_size);
3406	3908	next_entry = rx_q->cur_rx;
3407	3909
3408	3910	if (priv->extend_desc)
..	..	@@ -3416,133 +3918,126 @@
3416	3918	stmmac_rx_extended_status(priv, &priv->dev->stats,
3417	3919	&priv->xstats, rx_q->dma_erx + entry);
3418	3920	if (unlikely(status == discard_frame)) {
3419		- priv->dev->stats.rx_errors++;
3420		- if (priv->hwts_rx_en && !priv->extend_desc) {
3421		- /* DESC2 & DESC3 will be overwritten by device
3422		- * with timestamp value, hence reinitialize
3423		- * them in stmmac_rx_refill() function so that
3424		- * device can reuse it.
3425		- */
3426		- dev_kfree_skb_any(rx_q->rx_skbuff[entry]);
3427		- rx_q->rx_skbuff[entry] = NULL;
3428		- dma_unmap_single(priv->device,
3429		- rx_q->rx_skbuff_dma[entry],
3430		- priv->dma_buf_sz,
3431		- DMA_FROM_DEVICE);
3432		- }
3433		- } else {
3434		- struct sk_buff *skb;
3435		- int frame_len;
3436		- unsigned int des;
3437		-
3438		- stmmac_get_desc_addr(priv, p, &des);
3439		- frame_len = stmmac_get_rx_frame_len(priv, p, coe);
3440		-
3441		- /* If frame length is greater than skb buffer size
3442		- * (preallocated during init) then the packet is
3443		- * ignored
3444		- */
3445		- if (frame_len > priv->dma_buf_sz) {
3446		- if (net_ratelimit())
3447		- netdev_err(priv->dev,
3448		- "len %d larger than size (%d)\n",
3449		- frame_len, priv->dma_buf_sz);
3450		- priv->dev->stats.rx_length_errors++;
3451		- continue;
3452		- }
3453		-
3454		- /* ACS is set; GMAC core strips PAD/FCS for IEEE 802.3
3455		- * Type frames (LLC/LLC-SNAP)
3456		- *
3457		- * llc_snap is never checked in GMAC >= 4, so this ACS
3458		- * feature is always disabled and packets need to be
3459		- * stripped manually.
3460		- */
3461		- if (unlikely(priv->synopsys_id >= DWMAC_CORE_4_00) \|\|
3462		- unlikely(status != llc_snap))
3463		- frame_len -= ETH_FCS_LEN;
3464		-
3465		- if (netif_msg_rx_status(priv)) {
3466		- netdev_dbg(priv->dev, "\tdesc: %p [entry %d] buff=0x%x\n",
3467		- p, entry, des);
3468		- netdev_dbg(priv->dev, "frame size %d, COE: %d\n",
3469		- frame_len, status);
3470		- }
3471		-
3472		- /* The zero-copy is always used for all the sizes
3473		- * in case of GMAC4 because it needs
3474		- * to refill the used descriptors, always.
3475		- */
3476		- if (unlikely(!xmac &&
3477		- ((frame_len < priv->rx_copybreak) \|\|
3478		- stmmac_rx_threshold_count(rx_q)))) {
3479		- skb = netdev_alloc_skb_ip_align(priv->dev,
3480		- frame_len);
3481		- if (unlikely(!skb)) {
3482		- if (net_ratelimit())
3483		- dev_warn(priv->device,
3484		- "packet dropped\n");
3485		- priv->dev->stats.rx_dropped++;
3486		- continue;
3487		- }
3488		-
3489		- dma_sync_single_for_cpu(priv->device,
3490		- rx_q->rx_skbuff_dma
3491		- [entry], frame_len,
3492		- DMA_FROM_DEVICE);
3493		- skb_copy_to_linear_data(skb,
3494		- rx_q->
3495		- rx_skbuff[entry]->data,
3496		- frame_len);
3497		-
3498		- skb_put(skb, frame_len);
3499		- dma_sync_single_for_device(priv->device,
3500		- rx_q->rx_skbuff_dma
3501		- [entry], frame_len,
3502		- DMA_FROM_DEVICE);
3503		- } else {
3504		- skb = rx_q->rx_skbuff[entry];
3505		- if (unlikely(!skb)) {
3506		- if (net_ratelimit())
3507		- netdev_err(priv->dev,
3508		- "%s: Inconsistent Rx chain\n",
3509		- priv->dev->name);
3510		- priv->dev->stats.rx_dropped++;
3511		- continue;
3512		- }
3513		- prefetch(skb->data - NET_IP_ALIGN);
3514		- rx_q->rx_skbuff[entry] = NULL;
3515		- rx_q->rx_zeroc_thresh++;
3516		-
3517		- skb_put(skb, frame_len);
3518		- dma_unmap_single(priv->device,
3519		- rx_q->rx_skbuff_dma[entry],
3520		- priv->dma_buf_sz,
3521		- DMA_FROM_DEVICE);
3522		- }
3523		-
3524		- if (netif_msg_pktdata(priv)) {
3525		- netdev_dbg(priv->dev, "frame received (%dbytes)",
3526		- frame_len);
3527		- print_pkt(skb->data, frame_len);
3528		- }
3529		-
3530		- stmmac_get_rx_hwtstamp(priv, p, np, skb);
3531		-
3532		- stmmac_rx_vlan(priv->dev, skb);
3533		-
3534		- skb->protocol = eth_type_trans(skb, priv->dev);
3535		-
3536		- if (unlikely(!coe))
3537		- skb_checksum_none_assert(skb);
3538		- else
3539		- skb->ip_summed = CHECKSUM_UNNECESSARY;
3540		-
3541		- napi_gro_receive(&ch->napi, skb);
3542		-
3543		- priv->dev->stats.rx_packets++;
3544		- priv->dev->stats.rx_bytes += frame_len;
	3921	+ page_pool_recycle_direct(rx_q->page_pool, buf->page);
	3922	+ buf->page = NULL;
	3923	+ error = 1;
	3924	+ if (!priv->hwts_rx_en)
	3925	+ priv->dev->stats.rx_errors++;
3545	3926	}
	3927	+
	3928	+ if (unlikely(error && (status & rx_not_ls)))
	3929	+ goto read_again;
	3930	+ if (unlikely(error)) {
	3931	+ dev_kfree_skb(skb);
	3932	+ skb = NULL;
	3933	+ count++;
	3934	+ continue;
	3935	+ }
	3936	+
	3937	+ /* Buffer is good. Go on. */
	3938	+
	3939	+ prefetch(page_address(buf->page));
	3940	+ if (buf->sec_page)
	3941	+ prefetch(page_address(buf->sec_page));
	3942	+
	3943	+ buf1_len = stmmac_rx_buf1_len(priv, p, status, len);
	3944	+ len += buf1_len;
	3945	+ buf2_len = stmmac_rx_buf2_len(priv, p, status, len);
	3946	+ len += buf2_len;
	3947	+
	3948	+ /* ACS is set; GMAC core strips PAD/FCS for IEEE 802.3
	3949	+ * Type frames (LLC/LLC-SNAP)
	3950	+ *
	3951	+ * llc_snap is never checked in GMAC >= 4, so this ACS
	3952	+ * feature is always disabled and packets need to be
	3953	+ * stripped manually.
	3954	+ */
	3955	+ if (likely(!(status & rx_not_ls)) &&
	3956	+ (likely(priv->synopsys_id >= DWMAC_CORE_4_00) \|\|
	3957	+ unlikely(status != llc_snap))) {
	3958	+ if (buf2_len)
	3959	+ buf2_len -= ETH_FCS_LEN;
	3960	+ else
	3961	+ buf1_len -= ETH_FCS_LEN;
	3962	+
	3963	+ len -= ETH_FCS_LEN;
	3964	+ }
	3965	+
	3966	+ if (!skb) {
	3967	+ skb = napi_alloc_skb(&ch->rx_napi, buf1_len);
	3968	+ if (!skb) {
	3969	+ priv->dev->stats.rx_dropped++;
	3970	+ count++;
	3971	+ goto drain_data;
	3972	+ }
	3973	+
	3974	+ dma_sync_single_for_cpu(priv->device, buf->addr,
	3975	+ buf1_len, DMA_FROM_DEVICE);
	3976	+ skb_copy_to_linear_data(skb, page_address(buf->page),
	3977	+ buf1_len);
	3978	+ skb_put(skb, buf1_len);
	3979	+
	3980	+ /* Data payload copied into SKB, page ready for recycle */
	3981	+ page_pool_recycle_direct(rx_q->page_pool, buf->page);
	3982	+ buf->page = NULL;
	3983	+ } else if (buf1_len) {
	3984	+ dma_sync_single_for_cpu(priv->device, buf->addr,
	3985	+ buf1_len, DMA_FROM_DEVICE);
	3986	+ skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags,
	3987	+ buf->page, 0, buf1_len,
	3988	+ priv->dma_buf_sz);
	3989	+
	3990	+ /* Data payload appended into SKB */
	3991	+ page_pool_release_page(rx_q->page_pool, buf->page);
	3992	+ buf->page = NULL;
	3993	+ }
	3994	+
	3995	+ if (buf2_len) {
	3996	+ dma_sync_single_for_cpu(priv->device, buf->sec_addr,
	3997	+ buf2_len, DMA_FROM_DEVICE);
	3998	+ skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags,
	3999	+ buf->sec_page, 0, buf2_len,
	4000	+ priv->dma_buf_sz);
	4001	+
	4002	+ /* Data payload appended into SKB */
	4003	+ page_pool_release_page(rx_q->page_pool, buf->sec_page);
	4004	+ buf->sec_page = NULL;
	4005	+ }
	4006	+
	4007	+drain_data:
	4008	+ if (likely(status & rx_not_ls))
	4009	+ goto read_again;
	4010	+ if (!skb)
	4011	+ continue;
	4012	+
	4013	+ /* Got entire packet into SKB. Finish it. */
	4014	+
	4015	+ stmmac_get_rx_hwtstamp(priv, p, np, skb);
	4016	+ stmmac_rx_vlan(priv->dev, skb);
	4017	+ skb->protocol = eth_type_trans(skb, priv->dev);
	4018	+
	4019	+ if (unlikely(!coe))
	4020	+ skb_checksum_none_assert(skb);
	4021	+ else
	4022	+ skb->ip_summed = CHECKSUM_UNNECESSARY;
	4023	+
	4024	+ if (!stmmac_get_rx_hash(priv, p, &hash, &hash_type))
	4025	+ skb_set_hash(skb, hash, hash_type);
	4026	+
	4027	+ skb_record_rx_queue(skb, queue);
	4028	+ napi_gro_receive(&ch->rx_napi, skb);
	4029	+ skb = NULL;
	4030	+
	4031	+ priv->dev->stats.rx_packets++;
	4032	+ priv->dev->stats.rx_bytes += len;
	4033	+ count++;
	4034	+ }
	4035	+
	4036	+ if (status & rx_not_ls \|\| skb) {
	4037	+ rx_q->state_saved = true;
	4038	+ rx_q->state.skb = skb;
	4039	+ rx_q->state.error = error;
	4040	+ rx_q->state.len = len;
3546	4041	}
3547	4042
3548	4043	stmmac_rx_refill(priv, queue);
..	..	@@ -3552,40 +4047,47 @@
3552	4047	return count;
3553	4048	}
3554	4049
3555		-/**
3556		- * stmmac_poll - stmmac poll method (NAPI)
3557		- * @napi : pointer to the napi structure.
3558		- * @budget : maximum number of packets that the current CPU can receive from
3559		- * all interfaces.
3560		- * Description :
3561		- * To look at the incoming frames and clear the tx resources.
3562		- */
3563		-static int stmmac_napi_poll(struct napi_struct *napi, int budget)
	4050	+static int stmmac_napi_poll_rx(struct napi_struct *napi, int budget)
3564	4051	{
3565	4052	struct stmmac_channel *ch =
3566		- container_of(napi, struct stmmac_channel, napi);
	4053	+ container_of(napi, struct stmmac_channel, rx_napi);
3567	4054	struct stmmac_priv *priv = ch->priv_data;
3568		- int work_done, rx_done = 0, tx_done = 0;
3569	4055	u32 chan = ch->index;
	4056	+ int work_done;
3570	4057
3571	4058	priv->xstats.napi_poll++;
3572	4059
3573		- if (ch->has_tx)
3574		- tx_done = stmmac_tx_clean(priv, budget, chan);
3575		- if (ch->has_rx)
3576		- rx_done = stmmac_rx(priv, budget, chan);
	4060	+ work_done = stmmac_rx(priv, budget, chan);
	4061	+ if (work_done < budget && napi_complete_done(napi, work_done)) {
	4062	+ unsigned long flags;
3577	4063
3578		- work_done = max(rx_done, tx_done);
	4064	+ spin_lock_irqsave(&ch->lock, flags);
	4065	+ stmmac_enable_dma_irq(priv, priv->ioaddr, chan, 1, 0);
	4066	+ spin_unlock_irqrestore(&ch->lock, flags);
	4067	+ }
	4068	+
	4069	+ return work_done;
	4070	+}
	4071	+
	4072	+static int stmmac_napi_poll_tx(struct napi_struct *napi, int budget)
	4073	+{
	4074	+ struct stmmac_channel *ch =
	4075	+ container_of(napi, struct stmmac_channel, tx_napi);
	4076	+ struct stmmac_priv *priv = ch->priv_data;
	4077	+ u32 chan = ch->index;
	4078	+ int work_done;
	4079	+
	4080	+ priv->xstats.napi_poll++;
	4081	+
	4082	+ work_done = stmmac_tx_clean(priv, priv->dma_tx_size, chan);
3579	4083	work_done = min(work_done, budget);
3580	4084
3581	4085	if (work_done < budget && napi_complete_done(napi, work_done)) {
3582		- int stat;
	4086	+ unsigned long flags;
3583	4087
3584		- stmmac_enable_dma_irq(priv, priv->ioaddr, chan);
3585		- stat = stmmac_dma_interrupt_status(priv, priv->ioaddr,
3586		- &priv->xstats, chan);
3587		- if (stat && napi_reschedule(napi))
3588		- stmmac_disable_dma_irq(priv, priv->ioaddr, chan);
	4088	+ spin_lock_irqsave(&ch->lock, flags);
	4089	+ stmmac_enable_dma_irq(priv, priv->ioaddr, chan, 0, 1);
	4090	+ spin_unlock_irqrestore(&ch->lock, flags);
3589	4091	}
3590	4092
3591	4093	return work_done;
..	..	@@ -3594,12 +4096,13 @@
3594	4096	/**
3595	4097	* stmmac_tx_timeout
3596	4098	* @dev : Pointer to net device structure
	4099	+ * @txqueue: the index of the hanging transmit queue
3597	4100	* Description: this function is called when a packet transmission fails to
3598	4101	* complete within a reasonable time. The driver will mark the error in the
3599	4102	* netdev structure and arrange for the device to be reset to a sane state
3600	4103	* in order to transmit a new packet.
3601	4104	*/
3602		-static void stmmac_tx_timeout(struct net_device *dev)
	4105	+static void stmmac_tx_timeout(struct net_device *dev, unsigned int txqueue)
3603	4106	{
3604	4107	struct stmmac_priv *priv = netdev_priv(dev);
3605	4108
..	..	@@ -3696,6 +4199,8 @@
3696	4199	netdev_features_t features)
3697	4200	{
3698	4201	struct stmmac_priv *priv = netdev_priv(netdev);
	4202	+ bool sph_en;
	4203	+ u32 chan;
3699	4204
3700	4205	/* Keep the COE Type in case of csum is supporting */
3701	4206	if (features & NETIF_F_RXCSUM)
..	..	@@ -3706,6 +4211,10 @@
3706	4211	* fixed in case of issue.
3707	4212	*/
3708	4213	stmmac_rx_ipc(priv, priv->hw);
	4214	+
	4215	+ sph_en = (priv->hw->rx_csum > 0) && priv->sph;
	4216	+ for (chan = 0; chan < priv->plat->rx_queues_to_use; chan++)
	4217	+ stmmac_enable_sph(priv, priv->ioaddr, sph_en, chan);
3709	4218
3710	4219	return 0;
3711	4220	}
..	..	@@ -3799,6 +4308,7 @@
3799	4308	*/
3800	4309	static int stmmac_ioctl(struct net_device dev, struct ifreq rq, int cmd)
3801	4310	{
	4311	+ struct stmmac_priv *priv = netdev_priv (dev);
3802	4312	int ret = -EOPNOTSUPP;
3803	4313
3804	4314	if (!netif_running(dev))
..	..	@@ -3808,18 +4318,14 @@
3808	4318	case SIOCGMIIPHY:
3809	4319	case SIOCGMIIREG:
3810	4320	case SIOCSMIIREG:
3811		- if (!dev->phydev)
3812		- return -EINVAL;
3813		- ret = phy_mii_ioctl(dev->phydev, rq, cmd);
	4321	+ ret = phylink_mii_ioctl(priv->phylink, rq, cmd);
3814	4322	break;
3815		-#ifdef CONFIG_STMMAC_PTP
3816	4323	case SIOCSHWTSTAMP:
3817	4324	ret = stmmac_hwtstamp_set(dev, rq);
3818	4325	break;
3819	4326	case SIOCGHWTSTAMP:
3820	4327	ret = stmmac_hwtstamp_get(dev, rq);
3821	4328	break;
3822		-#endif
3823	4329	default:
3824	4330	break;
3825	4331	}
..	..	@@ -3833,12 +4339,17 @@
3833	4339	struct stmmac_priv *priv = cb_priv;
3834	4340	int ret = -EOPNOTSUPP;
3835	4341
	4342	+ if (!tc_cls_can_offload_and_chain0(priv->dev, type_data))
	4343	+ return ret;
	4344	+
3836	4345	stmmac_disable_all_queues(priv);
3837	4346
3838	4347	switch (type) {
3839	4348	case TC_SETUP_CLSU32:
3840		- if (tc_cls_can_offload_and_chain0(priv->dev, type_data))
3841		- ret = stmmac_tc_setup_cls_u32(priv, priv, type_data);
	4349	+ ret = stmmac_tc_setup_cls_u32(priv, priv, type_data);
	4350	+ break;
	4351	+ case TC_SETUP_CLSFLOWER:
	4352	+ ret = stmmac_tc_setup_cls(priv, priv, type_data);
3842	4353	break;
3843	4354	default:
3844	4355	break;
..	..	@@ -3848,23 +4359,7 @@
3848	4359	return ret;
3849	4360	}
3850	4361
3851		-static int stmmac_setup_tc_block(struct stmmac_priv *priv,
3852		- struct tc_block_offload *f)
3853		-{
3854		- if (f->binder_type != TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
3855		- return -EOPNOTSUPP;
3856		-
3857		- switch (f->command) {
3858		- case TC_BLOCK_BIND:
3859		- return tcf_block_cb_register(f->block, stmmac_setup_tc_block_cb,
3860		- priv, priv, f->extack);
3861		- case TC_BLOCK_UNBIND:
3862		- tcf_block_cb_unregister(f->block, stmmac_setup_tc_block_cb, priv);
3863		- return 0;
3864		- default:
3865		- return -EOPNOTSUPP;
3866		- }
3867		-}
	4362	+static LIST_HEAD(stmmac_block_cb_list);
3868	4363
3869	4364	static int stmmac_setup_tc(struct net_device *ndev, enum tc_setup_type type,
3870	4365	void *type_data)
..	..	@@ -3873,17 +4368,23 @@
3873	4368
3874	4369	switch (type) {
3875	4370	case TC_SETUP_BLOCK:
3876		- return stmmac_setup_tc_block(priv, type_data);
	4371	+ return flow_block_cb_setup_simple(type_data,
	4372	+ &stmmac_block_cb_list,
	4373	+ stmmac_setup_tc_block_cb,
	4374	+ priv, priv, true);
3877	4375	case TC_SETUP_QDISC_CBS:
3878	4376	return stmmac_tc_setup_cbs(priv, priv, type_data);
	4377	+ case TC_SETUP_QDISC_TAPRIO:
	4378	+ return stmmac_tc_setup_taprio(priv, priv, type_data);
	4379	+ case TC_SETUP_QDISC_ETF:
	4380	+ return stmmac_tc_setup_etf(priv, priv, type_data);
3879	4381	default:
3880	4382	return -EOPNOTSUPP;
3881	4383	}
3882	4384	}
3883	4385
3884	4386	static u16 stmmac_select_queue(struct net_device dev, struct sk_buff skb,
3885		- struct net_device *sb_dev,
3886		- select_queue_fallback_t fallback)
	4387	+ struct net_device *sb_dev)
3887	4388	{
3888	4389	int gso = skb_shinfo(skb)->gso_type;
3889	4390
..	..	@@ -3897,7 +4398,7 @@
3897	4398	return 0;
3898	4399	}
3899	4400
3900		- return fallback(dev, skb, NULL) % dev->real_num_tx_queues;
	4401	+ return netdev_pick_tx(dev, skb, NULL) % dev->real_num_tx_queues;
3901	4402	}
3902	4403
3903	4404	static int stmmac_set_mac_address(struct net_device ndev, void addr)
..	..	@@ -3905,11 +4406,20 @@
3905	4406	struct stmmac_priv *priv = netdev_priv(ndev);
3906	4407	int ret = 0;
3907	4408
	4409	+ ret = pm_runtime_get_sync(priv->device);
	4410	+ if (ret < 0) {
	4411	+ pm_runtime_put_noidle(priv->device);
	4412	+ return ret;
	4413	+ }
	4414	+
3908	4415	ret = eth_mac_addr(ndev, addr);
3909	4416	if (ret)
3910		- return ret;
	4417	+ goto set_mac_error;
3911	4418
3912	4419	stmmac_set_umac_addr(priv, priv->hw, ndev->dev_addr, 0);
	4420	+
	4421	+set_mac_error:
	4422	+ pm_runtime_put(priv->device);
3913	4423
3914	4424	return ret;
3915	4425	}
..	..	@@ -3918,24 +4428,27 @@
3918	4428	static struct dentry *stmmac_fs_dir;
3919	4429
3920	4430	static void sysfs_display_ring(void *head, int size, int extend_desc,
3921		- struct seq_file *seq)
	4431	+ struct seq_file *seq, dma_addr_t dma_phy_addr)
3922	4432	{
3923	4433	int i;
3924	4434	struct dma_extended_desc ep = (struct dma_extended_desc )head;
3925	4435	struct dma_desc p = (struct dma_desc )head;
	4436	+ dma_addr_t dma_addr;
3926	4437
3927	4438	for (i = 0; i < size; i++) {
3928	4439	if (extend_desc) {
3929		- seq_printf(seq, "%d [0x%x]: 0x%x 0x%x 0x%x 0x%x\n",
3930		- i, (unsigned int)virt_to_phys(ep),
	4440	+ dma_addr = dma_phy_addr + i * sizeof(*ep);
	4441	+ seq_printf(seq, "%d [%pad]: 0x%x 0x%x 0x%x 0x%x\n",
	4442	+ i, &dma_addr,
3931	4443	le32_to_cpu(ep->basic.des0),
3932	4444	le32_to_cpu(ep->basic.des1),
3933	4445	le32_to_cpu(ep->basic.des2),
3934	4446	le32_to_cpu(ep->basic.des3));
3935	4447	ep++;
3936	4448	} else {
3937		- seq_printf(seq, "%d [0x%x]: 0x%x 0x%x 0x%x 0x%x\n",
3938		- i, (unsigned int)virt_to_phys(p),
	4449	+ dma_addr = dma_phy_addr + i * sizeof(*p);
	4450	+ seq_printf(seq, "%d [%pad]: 0x%x 0x%x 0x%x 0x%x\n",
	4451	+ i, &dma_addr,
3939	4452	le32_to_cpu(p->des0), le32_to_cpu(p->des1),
3940	4453	le32_to_cpu(p->des2), le32_to_cpu(p->des3));
3941	4454	p++;
..	..	@@ -3944,7 +4457,7 @@
3944	4457	}
3945	4458	}
3946	4459
3947		-static int stmmac_sysfs_ring_read(struct seq_file seq, void v)
	4460	+static int stmmac_rings_status_show(struct seq_file seq, void v)
3948	4461	{
3949	4462	struct net_device *dev = seq->private;
3950	4463	struct stmmac_priv *priv = netdev_priv(dev);
..	..	@@ -3963,11 +4476,11 @@
3963	4476	if (priv->extend_desc) {
3964	4477	seq_printf(seq, "Extended descriptor ring:\n");
3965	4478	sysfs_display_ring((void *)rx_q->dma_erx,
3966		- DMA_RX_SIZE, 1, seq);
	4479	+ priv->dma_rx_size, 1, seq, rx_q->dma_rx_phy);
3967	4480	} else {
3968	4481	seq_printf(seq, "Descriptor ring:\n");
3969	4482	sysfs_display_ring((void *)rx_q->dma_rx,
3970		- DMA_RX_SIZE, 0, seq);
	4483	+ priv->dma_rx_size, 0, seq, rx_q->dma_rx_phy);
3971	4484	}
3972	4485	}
3973	4486
..	..	@@ -3979,33 +4492,19 @@
3979	4492	if (priv->extend_desc) {
3980	4493	seq_printf(seq, "Extended descriptor ring:\n");
3981	4494	sysfs_display_ring((void *)tx_q->dma_etx,
3982		- DMA_TX_SIZE, 1, seq);
3983		- } else {
	4495	+ priv->dma_tx_size, 1, seq, tx_q->dma_tx_phy);
	4496	+ } else if (!(tx_q->tbs & STMMAC_TBS_AVAIL)) {
3984	4497	seq_printf(seq, "Descriptor ring:\n");
3985	4498	sysfs_display_ring((void *)tx_q->dma_tx,
3986		- DMA_TX_SIZE, 0, seq);
	4499	+ priv->dma_tx_size, 0, seq, tx_q->dma_tx_phy);
3987	4500	}
3988	4501	}
3989	4502
3990	4503	return 0;
3991	4504	}
	4505	+DEFINE_SHOW_ATTRIBUTE(stmmac_rings_status);
3992	4506
3993		-static int stmmac_sysfs_ring_open(struct inode inode, struct file file)
3994		-{
3995		- return single_open(file, stmmac_sysfs_ring_read, inode->i_private);
3996		-}
3997		-
3998		-/* Debugfs files, should appear in /sys/kernel/debug/stmmaceth/eth0 */
3999		-
4000		-static const struct file_operations stmmac_rings_status_fops = {
4001		- .owner = THIS_MODULE,
4002		- .open = stmmac_sysfs_ring_open,
4003		- .read = seq_read,
4004		- .llseek = seq_lseek,
4005		- .release = single_release,
4006		-};
4007		-
4008		-static int stmmac_sysfs_dma_cap_read(struct seq_file seq, void v)
	4507	+static int stmmac_dma_cap_show(struct seq_file seq, void v)
4009	4508	{
4010	4509	struct net_device *dev = seq->private;
4011	4510	struct stmmac_priv *priv = netdev_priv(dev);
..	..	@@ -4063,64 +4562,94 @@
4063	4562	priv->dma_cap.number_rx_channel);
4064	4563	seq_printf(seq, "\tNumber of Additional TX channel: %d\n",
4065	4564	priv->dma_cap.number_tx_channel);
	4565	+ seq_printf(seq, "\tNumber of Additional RX queues: %d\n",
	4566	+ priv->dma_cap.number_rx_queues);
	4567	+ seq_printf(seq, "\tNumber of Additional TX queues: %d\n",
	4568	+ priv->dma_cap.number_tx_queues);
4066	4569	seq_printf(seq, "\tEnhanced descriptors: %s\n",
4067	4570	(priv->dma_cap.enh_desc) ? "Y" : "N");
4068		-
	4571	+ seq_printf(seq, "\tTX Fifo Size: %d\n", priv->dma_cap.tx_fifo_size);
	4572	+ seq_printf(seq, "\tRX Fifo Size: %d\n", priv->dma_cap.rx_fifo_size);
	4573	+ seq_printf(seq, "\tHash Table Size: %d\n", priv->dma_cap.hash_tb_sz);
	4574	+ seq_printf(seq, "\tTSO: %s\n", priv->dma_cap.tsoen ? "Y" : "N");
	4575	+ seq_printf(seq, "\tNumber of PPS Outputs: %d\n",
	4576	+ priv->dma_cap.pps_out_num);
	4577	+ seq_printf(seq, "\tSafety Features: %s\n",
	4578	+ priv->dma_cap.asp ? "Y" : "N");
	4579	+ seq_printf(seq, "\tFlexible RX Parser: %s\n",
	4580	+ priv->dma_cap.frpsel ? "Y" : "N");
	4581	+ seq_printf(seq, "\tEnhanced Addressing: %d\n",
	4582	+ priv->dma_cap.addr64);
	4583	+ seq_printf(seq, "\tReceive Side Scaling: %s\n",
	4584	+ priv->dma_cap.rssen ? "Y" : "N");
	4585	+ seq_printf(seq, "\tVLAN Hash Filtering: %s\n",
	4586	+ priv->dma_cap.vlhash ? "Y" : "N");
	4587	+ seq_printf(seq, "\tSplit Header: %s\n",
	4588	+ priv->dma_cap.sphen ? "Y" : "N");
	4589	+ seq_printf(seq, "\tVLAN TX Insertion: %s\n",
	4590	+ priv->dma_cap.vlins ? "Y" : "N");
	4591	+ seq_printf(seq, "\tDouble VLAN: %s\n",
	4592	+ priv->dma_cap.dvlan ? "Y" : "N");
	4593	+ seq_printf(seq, "\tNumber of L3/L4 Filters: %d\n",
	4594	+ priv->dma_cap.l3l4fnum);
	4595	+ seq_printf(seq, "\tARP Offloading: %s\n",
	4596	+ priv->dma_cap.arpoffsel ? "Y" : "N");
	4597	+ seq_printf(seq, "\tEnhancements to Scheduled Traffic (EST): %s\n",
	4598	+ priv->dma_cap.estsel ? "Y" : "N");
	4599	+ seq_printf(seq, "\tFrame Preemption (FPE): %s\n",
	4600	+ priv->dma_cap.fpesel ? "Y" : "N");
	4601	+ seq_printf(seq, "\tTime-Based Scheduling (TBS): %s\n",
	4602	+ priv->dma_cap.tbssel ? "Y" : "N");
4069	4603	return 0;
4070	4604	}
	4605	+DEFINE_SHOW_ATTRIBUTE(stmmac_dma_cap);
4071	4606
4072		-static int stmmac_sysfs_dma_cap_open(struct inode inode, struct file file)
	4607	+/* Use network device events to rename debugfs file entries.
	4608	+ */
	4609	+static int stmmac_device_event(struct notifier_block *unused,
	4610	+ unsigned long event, void *ptr)
4073	4611	{
4074		- return single_open(file, stmmac_sysfs_dma_cap_read, inode->i_private);
	4612	+ struct net_device *dev = netdev_notifier_info_to_dev(ptr);
	4613	+ struct stmmac_priv *priv = netdev_priv(dev);
	4614	+
	4615	+ if (dev->netdev_ops != &stmmac_netdev_ops)
	4616	+ goto done;
	4617	+
	4618	+ switch (event) {
	4619	+ case NETDEV_CHANGENAME:
	4620	+ if (priv->dbgfs_dir)
	4621	+ priv->dbgfs_dir = debugfs_rename(stmmac_fs_dir,
	4622	+ priv->dbgfs_dir,
	4623	+ stmmac_fs_dir,
	4624	+ dev->name);
	4625	+ break;
	4626	+ }
	4627	+done:
	4628	+ return NOTIFY_DONE;
4075	4629	}
4076	4630
4077		-static const struct file_operations stmmac_dma_cap_fops = {
4078		- .owner = THIS_MODULE,
4079		- .open = stmmac_sysfs_dma_cap_open,
4080		- .read = seq_read,
4081		- .llseek = seq_lseek,
4082		- .release = single_release,
	4631	+static struct notifier_block stmmac_notifier = {
	4632	+ .notifier_call = stmmac_device_event,
4083	4633	};
4084	4634
4085		-static int stmmac_init_fs(struct net_device *dev)
	4635	+static void stmmac_init_fs(struct net_device *dev)
4086	4636	{
4087	4637	struct stmmac_priv *priv = netdev_priv(dev);
	4638	+
	4639	+ rtnl_lock();
4088	4640
4089	4641	/* Create per netdev entries */
4090	4642	priv->dbgfs_dir = debugfs_create_dir(dev->name, stmmac_fs_dir);
4091	4643
4092		- if (!priv->dbgfs_dir \|\| IS_ERR(priv->dbgfs_dir)) {
4093		- netdev_err(priv->dev, "ERROR failed to create debugfs directory\n");
4094		-
4095		- return -ENOMEM;
4096		- }
4097		-
4098	4644	/* Entry to report DMA RX/TX rings */
4099		- priv->dbgfs_rings_status =
4100		- debugfs_create_file("descriptors_status", 0444,
4101		- priv->dbgfs_dir, dev,
4102		- &stmmac_rings_status_fops);
4103		-
4104		- if (!priv->dbgfs_rings_status \|\| IS_ERR(priv->dbgfs_rings_status)) {
4105		- netdev_err(priv->dev, "ERROR creating stmmac ring debugfs file\n");
4106		- debugfs_remove_recursive(priv->dbgfs_dir);
4107		-
4108		- return -ENOMEM;
4109		- }
	4645	+ debugfs_create_file("descriptors_status", 0444, priv->dbgfs_dir, dev,
	4646	+ &stmmac_rings_status_fops);
4110	4647
4111	4648	/* Entry to report the DMA HW features */
4112		- priv->dbgfs_dma_cap = debugfs_create_file("dma_cap", 0444,
4113		- priv->dbgfs_dir,
4114		- dev, &stmmac_dma_cap_fops);
	4649	+ debugfs_create_file("dma_cap", 0444, priv->dbgfs_dir, dev,
	4650	+ &stmmac_dma_cap_fops);
4115	4651
4116		- if (!priv->dbgfs_dma_cap \|\| IS_ERR(priv->dbgfs_dma_cap)) {
4117		- netdev_err(priv->dev, "ERROR creating stmmac MMC debugfs file\n");
4118		- debugfs_remove_recursive(priv->dbgfs_dir);
4119		-
4120		- return -ENOMEM;
4121		- }
4122		-
4123		- return 0;
	4652	+ rtnl_unlock();
4124	4653	}
4125	4654
4126	4655	static void stmmac_exit_fs(struct net_device *dev)
..	..	@@ -4130,6 +4659,111 @@
4130	4659	debugfs_remove_recursive(priv->dbgfs_dir);
4131	4660	}
4132	4661	#endif /* CONFIG_DEBUG_FS */
	4662	+
	4663	+static u32 stmmac_vid_crc32_le(__le16 vid_le)
	4664	+{
	4665	+ unsigned char data = (unsigned char )&vid_le;
	4666	+ unsigned char data_byte = 0;
	4667	+ u32 crc = ~0x0;
	4668	+ u32 temp = 0;
	4669	+ int i, bits;
	4670	+
	4671	+ bits = get_bitmask_order(VLAN_VID_MASK);
	4672	+ for (i = 0; i < bits; i++) {
	4673	+ if ((i % 8) == 0)
	4674	+ data_byte = data[i / 8];
	4675	+
	4676	+ temp = ((crc & 1) ^ data_byte) & 1;
	4677	+ crc >>= 1;
	4678	+ data_byte >>= 1;
	4679	+
	4680	+ if (temp)
	4681	+ crc ^= 0xedb88320;
	4682	+ }
	4683	+
	4684	+ return crc;
	4685	+}
	4686	+
	4687	+static int stmmac_vlan_update(struct stmmac_priv *priv, bool is_double)
	4688	+{
	4689	+ u32 crc, hash = 0;
	4690	+ __le16 pmatch = 0;
	4691	+ int count = 0;
	4692	+ u16 vid = 0;
	4693	+
	4694	+ for_each_set_bit(vid, priv->active_vlans, VLAN_N_VID) {
	4695	+ __le16 vid_le = cpu_to_le16(vid);
	4696	+ crc = bitrev32(~stmmac_vid_crc32_le(vid_le)) >> 28;
	4697	+ hash \|= (1 << crc);
	4698	+ count++;
	4699	+ }
	4700	+
	4701	+ if (!priv->dma_cap.vlhash) {
	4702	+ if (count > 2) /* VID = 0 always passes filter */
	4703	+ return -EOPNOTSUPP;
	4704	+
	4705	+ pmatch = cpu_to_le16(vid);
	4706	+ hash = 0;
	4707	+ }
	4708	+
	4709	+ return stmmac_update_vlan_hash(priv, priv->hw, hash, pmatch, is_double);
	4710	+}
	4711	+
	4712	+static int stmmac_vlan_rx_add_vid(struct net_device *ndev, __be16 proto, u16 vid)
	4713	+{
	4714	+ struct stmmac_priv *priv = netdev_priv(ndev);
	4715	+ bool is_double = false;
	4716	+ int ret;
	4717	+
	4718	+ if (be16_to_cpu(proto) == ETH_P_8021AD)
	4719	+ is_double = true;
	4720	+
	4721	+ set_bit(vid, priv->active_vlans);
	4722	+ ret = stmmac_vlan_update(priv, is_double);
	4723	+ if (ret) {
	4724	+ clear_bit(vid, priv->active_vlans);
	4725	+ return ret;
	4726	+ }
	4727	+
	4728	+ if (priv->hw->num_vlan) {
	4729	+ ret = stmmac_add_hw_vlan_rx_fltr(priv, ndev, priv->hw, proto, vid);
	4730	+ if (ret)
	4731	+ return ret;
	4732	+ }
	4733	+
	4734	+ return 0;
	4735	+}
	4736	+
	4737	+static int stmmac_vlan_rx_kill_vid(struct net_device *ndev, __be16 proto, u16 vid)
	4738	+{
	4739	+ struct stmmac_priv *priv = netdev_priv(ndev);
	4740	+ bool is_double = false;
	4741	+ int ret;
	4742	+
	4743	+ ret = pm_runtime_get_sync(priv->device);
	4744	+ if (ret < 0) {
	4745	+ pm_runtime_put_noidle(priv->device);
	4746	+ return ret;
	4747	+ }
	4748	+
	4749	+ if (be16_to_cpu(proto) == ETH_P_8021AD)
	4750	+ is_double = true;
	4751	+
	4752	+ clear_bit(vid, priv->active_vlans);
	4753	+
	4754	+ if (priv->hw->num_vlan) {
	4755	+ ret = stmmac_del_hw_vlan_rx_fltr(priv, ndev, priv->hw, proto, vid);
	4756	+ if (ret)
	4757	+ goto del_vlan_error;
	4758	+ }
	4759	+
	4760	+ ret = stmmac_vlan_update(priv, is_double);
	4761	+
	4762	+del_vlan_error:
	4763	+ pm_runtime_put(priv->device);
	4764	+
	4765	+ return ret;
	4766	+}
4133	4767
4134	4768	static const struct net_device_ops stmmac_netdev_ops = {
4135	4769	.ndo_open = stmmac_open,
..	..	@@ -4147,6 +4781,8 @@
4147	4781	.ndo_poll_controller = stmmac_poll_controller,
4148	4782	#endif
4149	4783	.ndo_set_mac_address = stmmac_set_mac_address,
	4784	+ .ndo_vlan_rx_add_vid = stmmac_vlan_rx_add_vid,
	4785	+ .ndo_vlan_rx_kill_vid = stmmac_vlan_rx_kill_vid,
4150	4786	};
4151	4787
4152	4788	static void stmmac_reset_subtask(struct stmmac_priv *priv)
..	..	@@ -4165,7 +4801,7 @@
4165	4801
4166	4802	set_bit(STMMAC_DOWN, &priv->state);
4167	4803	dev_close(priv->dev);
4168		- dev_open(priv->dev);
	4804	+ dev_open(priv->dev, NULL);
4169	4805	clear_bit(STMMAC_DOWN, &priv->state);
4170	4806	clear_bit(STMMAC_RESETING, &priv->state);
4171	4807	rtnl_unlock();
..	..	@@ -4215,6 +4851,12 @@
4215	4851	priv->plat->enh_desc = priv->dma_cap.enh_desc;
4216	4852	priv->plat->pmt = priv->dma_cap.pmt_remote_wake_up;
4217	4853	priv->hw->pmt = priv->plat->pmt;
	4854	+ if (priv->dma_cap.hash_tb_sz) {
	4855	+ priv->hw->multicast_filter_bins =
	4856	+ (BIT(priv->dma_cap.hash_tb_sz) << 5);
	4857	+ priv->hw->mcast_bits_log2 =
	4858	+ ilog2(priv->hw->multicast_filter_bins);
	4859	+ }
4218	4860
4219	4861	/* TXCOE doesn't work in thresh DMA mode */
4220	4862	if (priv->plat->force_thresh_dma_mode)
..	..	@@ -4251,6 +4893,9 @@
4251	4893	if (priv->dma_cap.tsoen)
4252	4894	dev_info(priv->device, "TSO supported\n");
4253	4895
	4896	+ priv->hw->vlan_fail_q_en = priv->plat->vlan_fail_q_en;
	4897	+ priv->hw->vlan_fail_q = priv->plat->vlan_fail_q;
	4898	+
4254	4899	/* Run HW quirks, if any */
4255	4900	if (priv->hwif_quirks) {
4256	4901	ret = priv->hwif_quirks(priv);
..	..	@@ -4273,6 +4918,92 @@
4273	4918	return 0;
4274	4919	}
4275	4920
	4921	+static void stmmac_napi_add(struct net_device *dev)
	4922	+{
	4923	+ struct stmmac_priv *priv = netdev_priv(dev);
	4924	+ u32 queue, maxq;
	4925	+
	4926	+ maxq = max(priv->plat->rx_queues_to_use, priv->plat->tx_queues_to_use);
	4927	+
	4928	+ for (queue = 0; queue < maxq; queue++) {
	4929	+ struct stmmac_channel *ch = &priv->channel[queue];
	4930	+ int rx_budget = ((priv->plat->dma_rx_size < NAPI_POLL_WEIGHT) &&
	4931	+ (priv->plat->dma_rx_size > 0)) ?
	4932	+ priv->plat->dma_rx_size : NAPI_POLL_WEIGHT;
	4933	+ int tx_budget = ((priv->plat->dma_tx_size < NAPI_POLL_WEIGHT) &&
	4934	+ (priv->plat->dma_tx_size > 0)) ?
	4935	+ priv->plat->dma_tx_size : NAPI_POLL_WEIGHT;
	4936	+
	4937	+ ch->priv_data = priv;
	4938	+ ch->index = queue;
	4939	+ spin_lock_init(&ch->lock);
	4940	+
	4941	+ if (queue < priv->plat->rx_queues_to_use) {
	4942	+ netif_napi_add(dev, &ch->rx_napi, stmmac_napi_poll_rx,
	4943	+ rx_budget);
	4944	+ }
	4945	+ if (queue < priv->plat->tx_queues_to_use) {
	4946	+ netif_tx_napi_add(dev, &ch->tx_napi,
	4947	+ stmmac_napi_poll_tx, tx_budget);
	4948	+ }
	4949	+ }
	4950	+}
	4951	+
	4952	+static void stmmac_napi_del(struct net_device *dev)
	4953	+{
	4954	+ struct stmmac_priv *priv = netdev_priv(dev);
	4955	+ u32 queue, maxq;
	4956	+
	4957	+ maxq = max(priv->plat->rx_queues_to_use, priv->plat->tx_queues_to_use);
	4958	+
	4959	+ for (queue = 0; queue < maxq; queue++) {
	4960	+ struct stmmac_channel *ch = &priv->channel[queue];
	4961	+
	4962	+ if (queue < priv->plat->rx_queues_to_use)
	4963	+ netif_napi_del(&ch->rx_napi);
	4964	+ if (queue < priv->plat->tx_queues_to_use)
	4965	+ netif_napi_del(&ch->tx_napi);
	4966	+ }
	4967	+}
	4968	+
	4969	+int stmmac_reinit_queues(struct net_device *dev, u32 rx_cnt, u32 tx_cnt)
	4970	+{
	4971	+ struct stmmac_priv *priv = netdev_priv(dev);
	4972	+ int ret = 0;
	4973	+
	4974	+ if (netif_running(dev))
	4975	+ stmmac_release(dev);
	4976	+
	4977	+ stmmac_napi_del(dev);
	4978	+
	4979	+ priv->plat->rx_queues_to_use = rx_cnt;
	4980	+ priv->plat->tx_queues_to_use = tx_cnt;
	4981	+
	4982	+ stmmac_napi_add(dev);
	4983	+
	4984	+ if (netif_running(dev))
	4985	+ ret = stmmac_open(dev);
	4986	+
	4987	+ return ret;
	4988	+}
	4989	+
	4990	+int stmmac_reinit_ringparam(struct net_device *dev, u32 rx_size, u32 tx_size)
	4991	+{
	4992	+ struct stmmac_priv *priv = netdev_priv(dev);
	4993	+ int ret = 0;
	4994	+
	4995	+ if (netif_running(dev))
	4996	+ stmmac_release(dev);
	4997	+
	4998	+ priv->dma_rx_size = rx_size;
	4999	+ priv->dma_tx_size = tx_size;
	5000	+
	5001	+ if (netif_running(dev))
	5002	+ ret = stmmac_open(dev);
	5003	+
	5004	+ return ret;
	5005	+}
	5006	+
4276	5007	/**
4277	5008	* stmmac_dvr_probe
4278	5009	* @device: device pointer
..	..	@@ -4289,12 +5020,11 @@
4289	5020	{
4290	5021	struct net_device *ndev = NULL;
4291	5022	struct stmmac_priv *priv;
4292		- u32 queue, maxq;
4293		- int ret = 0;
	5023	+ u32 rxq;
	5024	+ int i, ret = 0;
4294	5025
4295		- ndev = alloc_etherdev_mqs(sizeof(struct stmmac_priv),
4296		- MTL_MAX_TX_QUEUES,
4297		- MTL_MAX_RX_QUEUES);
	5026	+ ndev = devm_alloc_etherdev_mqs(device, sizeof(struct stmmac_priv),
	5027	+ MTL_MAX_TX_QUEUES, MTL_MAX_RX_QUEUES);
4298	5028	if (!ndev)
4299	5029	return -ENOMEM;
4300	5030
..	..	@@ -4314,7 +5044,7 @@
4314	5044	priv->wol_irq = res->wol_irq;
4315	5045	priv->lpi_irq = res->lpi_irq;
4316	5046
4317		- if (res->mac)
	5047	+ if (!IS_ERR_OR_NULL(res->mac))
4318	5048	memcpy(priv->dev->dev_addr, res->mac, ETH_ALEN);
4319	5049
4320	5050	dev_set_drvdata(device, priv->dev);
..	..	@@ -4326,8 +5056,7 @@
4326	5056	priv->wq = create_singlethread_workqueue("stmmac_wq");
4327	5057	if (!priv->wq) {
4328	5058	dev_err(priv->device, "failed to create workqueue\n");
4329		- ret = -ENOMEM;
4330		- goto error_wq;
	5059	+ return -ENOMEM;
4331	5060	}
4332	5061
4333	5062	INIT_WORK(&priv->service_task, stmmac_service_task);
..	..	@@ -4355,10 +5084,6 @@
4355	5084
4356	5085	stmmac_check_ether_addr(priv);
4357	5086
4358		- /* Configure real RX and TX queues */
4359		- netif_set_real_num_rx_queues(ndev, priv->plat->rx_queues_to_use);
4360		- netif_set_real_num_tx_queues(ndev, priv->plat->tx_queues_to_use);
4361		-
4362	5087	ndev->netdev_ops = &stmmac_netdev_ops;
4363	5088
4364	5089	ndev->hw_features = NETIF_F_SG \| NETIF_F_IP_CSUM \| NETIF_F_IPV6_CSUM \|
..	..	@@ -4376,20 +5101,79 @@
4376	5101	priv->tso = true;
4377	5102	dev_info(priv->device, "TSO feature enabled\n");
4378	5103	}
	5104	+
	5105	+ if (priv->dma_cap.sphen && !priv->plat->sph_disable) {
	5106	+ ndev->hw_features \|= NETIF_F_GRO;
	5107	+ if (!priv->plat->sph_disable) {
	5108	+ priv->sph = true;
	5109	+ dev_info(priv->device, "SPH feature enabled\n");
	5110	+ }
	5111	+ }
	5112	+
	5113	+ /* The current IP register MAC_HW_Feature1[ADDR64] only define
	5114	+ * 32/40/64 bit width, but some SOC support others like i.MX8MP
	5115	+ * support 34 bits but it map to 40 bits width in MAC_HW_Feature1[ADDR64].
	5116	+ * So overwrite dma_cap.addr64 according to HW real design.
	5117	+ */
	5118	+ if (priv->plat->addr64)
	5119	+ priv->dma_cap.addr64 = priv->plat->addr64;
	5120	+
	5121	+ if (priv->dma_cap.addr64) {
	5122	+ ret = dma_set_mask_and_coherent(device,
	5123	+ DMA_BIT_MASK(priv->dma_cap.addr64));
	5124	+ if (!ret) {
	5125	+ dev_info(priv->device, "Using %d bits DMA width\n",
	5126	+ priv->dma_cap.addr64);
	5127	+
	5128	+ /*
	5129	+ * If more than 32 bits can be addressed, make sure to
	5130	+ * enable enhanced addressing mode.
	5131	+ */
	5132	+ if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT))
	5133	+ priv->plat->dma_cfg->eame = true;
	5134	+ } else {
	5135	+ ret = dma_set_mask_and_coherent(device, DMA_BIT_MASK(32));
	5136	+ if (ret) {
	5137	+ dev_err(priv->device, "Failed to set DMA Mask\n");
	5138	+ goto error_hw_init;
	5139	+ }
	5140	+
	5141	+ priv->dma_cap.addr64 = 32;
	5142	+ }
	5143	+ }
	5144	+
4379	5145	ndev->features \|= ndev->hw_features \| NETIF_F_HIGHDMA;
4380	5146	ndev->watchdog_timeo = msecs_to_jiffies(watchdog);
4381	5147	#ifdef STMMAC_VLAN_TAG_USED
4382	5148	/* Both mac100 and gmac support receive VLAN tag detection */
4383	5149	ndev->features \|= NETIF_F_HW_VLAN_CTAG_RX \| NETIF_F_HW_VLAN_STAG_RX;
	5150	+ if (priv->dma_cap.vlhash) {
	5151	+ ndev->features \|= NETIF_F_HW_VLAN_CTAG_FILTER;
	5152	+ ndev->features \|= NETIF_F_HW_VLAN_STAG_FILTER;
	5153	+ }
	5154	+ if (priv->dma_cap.vlins) {
	5155	+ ndev->features \|= NETIF_F_HW_VLAN_CTAG_TX;
	5156	+ if (priv->dma_cap.dvlan)
	5157	+ ndev->features \|= NETIF_F_HW_VLAN_STAG_TX;
	5158	+ }
4384	5159	#endif
4385	5160	priv->msg_enable = netif_msg_init(debug, default_msg_level);
4386	5161
	5162	+ /* Initialize RSS */
	5163	+ rxq = priv->plat->rx_queues_to_use;
	5164	+ netdev_rss_key_fill(priv->rss.key, sizeof(priv->rss.key));
	5165	+ for (i = 0; i < ARRAY_SIZE(priv->rss.table); i++)
	5166	+ priv->rss.table[i] = ethtool_rxfh_indir_default(i, rxq);
	5167	+
	5168	+ if (priv->dma_cap.rssen && priv->plat->rss_en)
	5169	+ ndev->features \|= NETIF_F_RXHASH;
	5170	+
4387	5171	/* MTU range: 46 - hw-specific max */
4388	5172	ndev->min_mtu = ETH_ZLEN - ETH_HLEN;
4389		- if ((priv->plat->enh_desc) \|\| (priv->synopsys_id >= DWMAC_CORE_4_00))
4390		- ndev->max_mtu = JUMBO_LEN;
4391		- else if (priv->plat->has_xgmac)
	5173	+ if (priv->plat->has_xgmac)
4392	5174	ndev->max_mtu = XGMAC_JUMBO_LEN;
	5175	+ else if ((priv->plat->enh_desc) \|\| (priv->synopsys_id >= DWMAC_CORE_4_00))
	5176	+ ndev->max_mtu = JUMBO_LEN;
4393	5177	else
4394	5178	ndev->max_mtu = SKB_MAX_HEAD(NET_SKB_PAD + NET_IP_ALIGN);
4395	5179	/* Will not overwrite ndev->max_mtu if plat->maxmtu > ndev->max_mtu
..	..	@@ -4407,22 +5191,7 @@
4407	5191	priv->flow_ctrl = FLOW_AUTO; /* RX/TX pause on */
4408	5192
4409	5193	/* Setup channels NAPI */
4410		- maxq = max(priv->plat->rx_queues_to_use, priv->plat->tx_queues_to_use);
4411		-
4412		- for (queue = 0; queue < maxq; queue++) {
4413		- struct stmmac_channel *ch = &priv->channel[queue];
4414		-
4415		- ch->priv_data = priv;
4416		- ch->index = queue;
4417		-
4418		- if (queue < priv->plat->rx_queues_to_use)
4419		- ch->has_rx = true;
4420		- if (queue < priv->plat->tx_queues_to_use)
4421		- ch->has_tx = true;
4422		-
4423		- netif_napi_add(ndev, &ch->napi, stmmac_napi_poll,
4424		- NAPI_POLL_WEIGHT);
4425		- }
	5194	+ stmmac_napi_add(ndev);
4426	5195
4427	5196	mutex_init(&priv->lock);
4428	5197
..	..	@@ -4432,15 +5201,18 @@
4432	5201	* set the MDC clock dynamically according to the csr actual
4433	5202	* clock input.
4434	5203	*/
4435		- if (!priv->plat->clk_csr)
4436		- stmmac_clk_csr_set(priv);
4437		- else
	5204	+ if (priv->plat->clk_csr >= 0)
4438	5205	priv->clk_csr = priv->plat->clk_csr;
	5206	+ else
	5207	+ stmmac_clk_csr_set(priv);
4439	5208
4440	5209	stmmac_check_pcs_mode(priv);
4441	5210
4442		- if (priv->hw->pcs != STMMAC_PCS_RGMII &&
4443		- priv->hw->pcs != STMMAC_PCS_TBI &&
	5211	+ pm_runtime_get_noresume(device);
	5212	+ pm_runtime_set_active(device);
	5213	+ pm_runtime_enable(device);
	5214	+
	5215	+ if (priv->hw->pcs != STMMAC_PCS_TBI &&
4444	5216	priv->hw->pcs != STMMAC_PCS_RTBI) {
4445	5217	/* MDIO bus Registration */
4446	5218	ret = stmmac_mdio_register(ndev);
..	..	@@ -4452,6 +5224,12 @@
4452	5224	}
4453	5225	}
4454	5226
	5227	+ ret = stmmac_phy_setup(priv);
	5228	+ if (ret) {
	5229	+ netdev_err(ndev, "failed to setup phy (%d)\n", ret);
	5230	+ goto error_phy_setup;
	5231	+ }
	5232	+
4455	5233	ret = register_netdev(ndev);
4456	5234	if (ret) {
4457	5235	dev_err(priv->device, "%s: ERROR %i registering the device\n",
..	..	@@ -4460,29 +5238,26 @@
4460	5238	}
4461	5239
4462	5240	#ifdef CONFIG_DEBUG_FS
4463		- ret = stmmac_init_fs(ndev);
4464		- if (ret < 0)
4465		- netdev_warn(priv->dev, "%s: failed debugFS registration\n",
4466		- __func__);
	5241	+ stmmac_init_fs(ndev);
4467	5242	#endif
	5243	+
	5244	+ /* Let pm_runtime_put() disable the clocks.
	5245	+ * If CONFIG_PM is not enabled, the clocks will stay powered.
	5246	+ */
	5247	+ pm_runtime_put(device);
4468	5248
4469	5249	return ret;
4470	5250
4471	5251	error_netdev_register:
4472		- if (priv->hw->pcs != STMMAC_PCS_RGMII &&
4473		- priv->hw->pcs != STMMAC_PCS_TBI &&
	5252	+ phylink_destroy(priv->phylink);
	5253	+error_phy_setup:
	5254	+ if (priv->hw->pcs != STMMAC_PCS_TBI &&
4474	5255	priv->hw->pcs != STMMAC_PCS_RTBI)
4475	5256	stmmac_mdio_unregister(ndev);
4476	5257	error_mdio_register:
4477		- for (queue = 0; queue < maxq; queue++) {
4478		- struct stmmac_channel *ch = &priv->channel[queue];
4479		-
4480		- netif_napi_del(&ch->napi);
4481		- }
	5258	+ stmmac_napi_del(ndev);
4482	5259	error_hw_init:
4483	5260	destroy_workqueue(priv->wq);
4484		-error_wq:
4485		- free_netdev(ndev);
4486	5261
4487	5262	return ret;
4488	5263	}
..	..	@@ -4501,25 +5276,30 @@
4501	5276
4502	5277	netdev_info(priv->dev, "%s: removing driver", __func__);
4503	5278
4504		-#ifdef CONFIG_DEBUG_FS
4505		- stmmac_exit_fs(ndev);
4506		-#endif
4507	5279	stmmac_stop_all_dma(priv);
4508		-
4509	5280	stmmac_mac_set(priv, priv->ioaddr, false);
4510	5281	netif_carrier_off(ndev);
4511	5282	unregister_netdev(ndev);
	5283	+
	5284	+ /* Serdes power down needs to happen after VLAN filter
	5285	+ * is deleted that is triggered by unregister_netdev().
	5286	+ */
	5287	+ if (priv->plat->serdes_powerdown)
	5288	+ priv->plat->serdes_powerdown(ndev, priv->plat->bsp_priv);
	5289	+
	5290	+#ifdef CONFIG_DEBUG_FS
	5291	+ stmmac_exit_fs(ndev);
	5292	+#endif
	5293	+ phylink_destroy(priv->phylink);
4512	5294	if (priv->plat->stmmac_rst)
4513	5295	reset_control_assert(priv->plat->stmmac_rst);
4514		- clk_disable_unprepare(priv->plat->pclk);
4515		- clk_disable_unprepare(priv->plat->stmmac_clk);
4516		- if (priv->hw->pcs != STMMAC_PCS_RGMII &&
4517		- priv->hw->pcs != STMMAC_PCS_TBI &&
	5296	+ pm_runtime_put(dev);
	5297	+ pm_runtime_disable(dev);
	5298	+ if (priv->hw->pcs != STMMAC_PCS_TBI &&
4518	5299	priv->hw->pcs != STMMAC_PCS_RTBI)
4519	5300	stmmac_mdio_unregister(ndev);
4520	5301	destroy_workqueue(priv->wq);
4521	5302	mutex_destroy(&priv->lock);
4522		- free_netdev(ndev);
4523	5303
4524	5304	return 0;
4525	5305	}
..	..	@@ -4541,8 +5321,7 @@
4541	5321	if (!ndev \|\| !netif_running(ndev))
4542	5322	return 0;
4543	5323
4544		- if (ndev->phydev)
4545		- phy_stop(ndev->phydev);
	5324	+ phylink_mac_change(priv->phylink, false);
4546	5325
4547	5326	mutex_lock(&priv->lock);
4548	5327
..	..	@@ -4561,34 +5340,38 @@
4561	5340	/* Stop TX/RX DMA */
4562	5341	stmmac_stop_all_dma(priv);
4563	5342
	5343	+ if (priv->plat->serdes_powerdown)
	5344	+ priv->plat->serdes_powerdown(ndev, priv->plat->bsp_priv);
	5345	+
4564	5346	/* Enable Power down mode by programming the PMT regs */
4565		- if (device_may_wakeup(priv->device)) {
	5347	+ if (device_may_wakeup(priv->device) && priv->plat->pmt) {
4566	5348	stmmac_pmt(priv, priv->hw, priv->wolopts);
4567	5349	priv->irq_wake = 1;
4568	5350	} else {
	5351	+ mutex_unlock(&priv->lock);
	5352	+ rtnl_lock();
	5353	+ if (device_may_wakeup(priv->device))
	5354	+ phylink_speed_down(priv->phylink, false);
4569	5355	if (priv->plat->integrated_phy_power)
4570	5356	priv->plat->integrated_phy_power(priv->plat->bsp_priv,
4571	5357	false);
	5358	+ phylink_stop(priv->phylink);
	5359	+ rtnl_unlock();
	5360	+ mutex_lock(&priv->lock);
	5361	+
4572	5362	stmmac_mac_set(priv, priv->ioaddr, false);
4573	5363	pinctrl_pm_select_sleep_state(priv->device);
4574		- /* Disable clock in case of PWM is off */
4575		- if (priv->plat->clk_ptp_ref && IS_ENABLED(CONFIG_STMMAC_PTP))
4576		- clk_disable_unprepare(priv->plat->clk_ptp_ref);
4577		- clk_disable_unprepare(priv->plat->pclk);
4578		- clk_disable_unprepare(priv->plat->stmmac_clk);
4579	5364	}
4580	5365	mutex_unlock(&priv->lock);
4581	5366
4582		- priv->oldlink = false;
4583	5367	priv->speed = SPEED_UNKNOWN;
4584		- priv->oldduplex = DUPLEX_UNKNOWN;
4585	5368	return 0;
4586	5369	}
4587	5370	EXPORT_SYMBOL_GPL(stmmac_suspend);
4588	5371
4589	5372	/**
4590	5373	* stmmac_reset_queues_param - reset queue parameters
4591		- * @dev: device pointer
	5374	+ * @priv: device pointer
4592	5375	*/
4593	5376	static void stmmac_reset_queues_param(struct stmmac_priv *priv)
4594	5377	{
..	..	@@ -4624,6 +5407,7 @@
4624	5407	{
4625	5408	struct net_device *ndev = dev_get_drvdata(dev);
4626	5409	struct stmmac_priv *priv = netdev_priv(ndev);
	5410	+ int ret;
4627	5411
4628	5412	if (!netif_running(ndev))
4629	5413	return 0;
..	..	@@ -4634,18 +5418,13 @@
4634	5418	* this bit because it can generate problems while resuming
4635	5419	* from another devices (e.g. serial console).
4636	5420	*/
4637		- if (device_may_wakeup(priv->device)) {
	5421	+ if (device_may_wakeup(priv->device) && priv->plat->pmt) {
4638	5422	mutex_lock(&priv->lock);
4639	5423	stmmac_pmt(priv, priv->hw, 0);
4640	5424	mutex_unlock(&priv->lock);
4641	5425	priv->irq_wake = 0;
4642	5426	} else {
4643	5427	pinctrl_pm_select_default_state(priv->device);
4644		- /* enable the clk previously disabled */
4645		- clk_prepare_enable(priv->plat->stmmac_clk);
4646		- clk_prepare_enable(priv->plat->pclk);
4647		- if (priv->plat->clk_ptp_ref && IS_ENABLED(CONFIG_STMMAC_PTP))
4648		- clk_prepare_enable(priv->plat->clk_ptp_ref);
4649	5428	/* reset the phy so that it's ready */
4650	5429	if (priv->mii)
4651	5430	stmmac_mdio_reset(priv->mii);
..	..	@@ -4654,6 +5433,23 @@
4654	5433	true);
4655	5434	}
4656	5435
	5436	+ if (priv->plat->serdes_powerup) {
	5437	+ ret = priv->plat->serdes_powerup(ndev,
	5438	+ priv->plat->bsp_priv);
	5439	+
	5440	+ if (ret < 0)
	5441	+ return ret;
	5442	+ }
	5443	+
	5444	+ if (!device_may_wakeup(priv->device) \|\| !priv->plat->pmt) {
	5445	+ rtnl_lock();
	5446	+ phylink_start(priv->phylink);
	5447	+ /* We may have called phylink_speed_down before */
	5448	+ phylink_speed_up(priv->phylink);
	5449	+ rtnl_unlock();
	5450	+ }
	5451	+
	5452	+ rtnl_lock();
4657	5453	mutex_lock(&priv->lock);
4658	5454
4659	5455	stmmac_reset_queues_param(priv);
..	..	@@ -4662,17 +5458,19 @@
4662	5458	stmmac_clear_descriptors(priv);
4663	5459
4664	5460	stmmac_hw_setup(ndev, false);
4665		- stmmac_init_tx_coalesce(priv);
	5461	+ stmmac_init_coalesce(priv);
4666	5462	stmmac_set_rx_mode(ndev);
	5463	+
	5464	+ stmmac_restore_hw_vlan_rx_fltr(priv, ndev, priv->hw);
4667	5465
4668	5466	stmmac_enable_all_queues(priv);
4669	5467
4670		- netif_device_attach(ndev);
4671		-
4672	5468	mutex_unlock(&priv->lock);
	5469	+ rtnl_unlock();
4673	5470
4674		- if (ndev->phydev)
4675		- phy_start(ndev->phydev);
	5471	+ phylink_mac_change(priv->phylink, true);
	5472	+
	5473	+ netif_device_attach(ndev);
4676	5474
4677	5475	return 0;
4678	5476	}
..	..	@@ -4684,7 +5482,7 @@
4684	5482	char *opt;
4685	5483
4686	5484	if (!str \|\| !*str)
4687		- return -EINVAL;
	5485	+ return 1;
4688	5486	while ((opt = strsep(&str, ",")) != NULL) {
4689	5487	if (!strncmp(opt, "debug:", 6)) {
4690	5488	if (kstrtoint(opt + 6, 0, &debug))
..	..	@@ -4715,11 +5513,11 @@
4715	5513	goto err;
4716	5514	}
4717	5515	}
4718		- return 0;
	5516	+ return 1;
4719	5517
4720	5518	err:
4721	5519	pr_err("%s: ERROR broken module parameter conversion", __func__);
4722		- return -EINVAL;
	5520	+ return 1;
4723	5521	}
4724	5522
4725	5523	__setup("stmmaceth=", stmmac_cmdline_opt);
..	..	@@ -4729,16 +5527,9 @@
4729	5527	{
4730	5528	#ifdef CONFIG_DEBUG_FS
4731	5529	/* Create debugfs main directory if it doesn't exist yet */
4732		- if (!stmmac_fs_dir) {
	5530	+ if (!stmmac_fs_dir)
4733	5531	stmmac_fs_dir = debugfs_create_dir(STMMAC_RESOURCE_NAME, NULL);
4734		-
4735		- if (!stmmac_fs_dir \|\| IS_ERR(stmmac_fs_dir)) {
4736		- pr_err("ERROR %s, debugfs create directory failed\n",
4737		- STMMAC_RESOURCE_NAME);
4738		-
4739		- return -ENOMEM;
4740		- }
4741		- }
	5532	+ register_netdevice_notifier(&stmmac_notifier);
4742	5533	#endif
4743	5534
4744	5535	return 0;
..	..	@@ -4747,6 +5538,7 @@
4747	5538	static void __exit stmmac_exit(void)
4748	5539	{
4749	5540	#ifdef CONFIG_DEBUG_FS
	5541	+ unregister_netdevice_notifier(&stmmac_notifier);
4750	5542	debugfs_remove_recursive(stmmac_fs_dir);
4751	5543	#endif
4752	5544	}