1 /* This program is free software; you can redistribute it and/or modify
2 * it under the terms of the GNU General Public License as published by
3 * the Free Software Foundation; version 2 of the License
5 * This program is distributed in the hope that it will be useful,
6 * but WITHOUT ANY WARRANTY; without even the implied warranty of
7 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
8 * GNU General Public License for more details.
10 * Copyright (C) 2009-2016 John Crispin <blogic@openwrt.org>
11 * Copyright (C) 2009-2016 Felix Fietkau <nbd@openwrt.org>
12 * Copyright (C) 2013-2016 Michael Lee <igvtee@gmail.com>
15 #include <linux/of_device.h>
16 #include <linux/of_mdio.h>
17 #include <linux/of_net.h>
18 #include <linux/mfd/syscon.h>
19 #include <linux/regmap.h>
20 #include <linux/clk.h>
21 #include <linux/if_vlan.h>
22 #include <linux/reset.h>
23 #include <linux/tcp.h>
25 #include "mtk_eth_soc.h"
27 static int mtk_msg_level
= -1;
28 module_param_named(msg_level
, mtk_msg_level
, int, 0);
29 MODULE_PARM_DESC(msg_level
, "Message level (-1=defaults,0=none,...,16=all)");
31 #define MTK_ETHTOOL_STAT(x) { #x, \
32 offsetof(struct mtk_hw_stats, x) / sizeof(u64) }
34 /* strings used by ethtool */
35 static const struct mtk_ethtool_stats
{
36 char str
[ETH_GSTRING_LEN
];
38 } mtk_ethtool_stats
[] = {
39 MTK_ETHTOOL_STAT(tx_bytes
),
40 MTK_ETHTOOL_STAT(tx_packets
),
41 MTK_ETHTOOL_STAT(tx_skip
),
42 MTK_ETHTOOL_STAT(tx_collisions
),
43 MTK_ETHTOOL_STAT(rx_bytes
),
44 MTK_ETHTOOL_STAT(rx_packets
),
45 MTK_ETHTOOL_STAT(rx_overflow
),
46 MTK_ETHTOOL_STAT(rx_fcs_errors
),
47 MTK_ETHTOOL_STAT(rx_short_errors
),
48 MTK_ETHTOOL_STAT(rx_long_errors
),
49 MTK_ETHTOOL_STAT(rx_checksum_errors
),
50 MTK_ETHTOOL_STAT(rx_flow_control_packets
),
53 void mtk_w32(struct mtk_eth
*eth
, u32 val
, unsigned reg
)
55 __raw_writel(val
, eth
->base
+ reg
);
58 u32
mtk_r32(struct mtk_eth
*eth
, unsigned reg
)
60 return __raw_readl(eth
->base
+ reg
);
63 static int mtk_mdio_busy_wait(struct mtk_eth
*eth
)
65 unsigned long t_start
= jiffies
;
68 if (!(mtk_r32(eth
, MTK_PHY_IAC
) & PHY_IAC_ACCESS
))
70 if (time_after(jiffies
, t_start
+ PHY_IAC_TIMEOUT
))
75 dev_err(eth
->dev
, "mdio: MDIO timeout\n");
79 static u32
_mtk_mdio_write(struct mtk_eth
*eth
, u32 phy_addr
,
80 u32 phy_register
, u32 write_data
)
82 if (mtk_mdio_busy_wait(eth
))
87 mtk_w32(eth
, PHY_IAC_ACCESS
| PHY_IAC_START
| PHY_IAC_WRITE
|
88 (phy_register
<< PHY_IAC_REG_SHIFT
) |
89 (phy_addr
<< PHY_IAC_ADDR_SHIFT
) | write_data
,
92 if (mtk_mdio_busy_wait(eth
))
98 static u32
_mtk_mdio_read(struct mtk_eth
*eth
, int phy_addr
, int phy_reg
)
102 if (mtk_mdio_busy_wait(eth
))
105 mtk_w32(eth
, PHY_IAC_ACCESS
| PHY_IAC_START
| PHY_IAC_READ
|
106 (phy_reg
<< PHY_IAC_REG_SHIFT
) |
107 (phy_addr
<< PHY_IAC_ADDR_SHIFT
),
110 if (mtk_mdio_busy_wait(eth
))
113 d
= mtk_r32(eth
, MTK_PHY_IAC
) & 0xffff;
118 static int mtk_mdio_write(struct mii_bus
*bus
, int phy_addr
,
119 int phy_reg
, u16 val
)
121 struct mtk_eth
*eth
= bus
->priv
;
123 return _mtk_mdio_write(eth
, phy_addr
, phy_reg
, val
);
126 static int mtk_mdio_read(struct mii_bus
*bus
, int phy_addr
, int phy_reg
)
128 struct mtk_eth
*eth
= bus
->priv
;
130 return _mtk_mdio_read(eth
, phy_addr
, phy_reg
);
133 static void mtk_phy_link_adjust(struct net_device
*dev
)
135 struct mtk_mac
*mac
= netdev_priv(dev
);
136 u16 lcl_adv
= 0, rmt_adv
= 0;
138 u32 mcr
= MAC_MCR_MAX_RX_1536
| MAC_MCR_IPG_CFG
|
139 MAC_MCR_FORCE_MODE
| MAC_MCR_TX_EN
|
140 MAC_MCR_RX_EN
| MAC_MCR_BACKOFF_EN
|
143 switch (mac
->phy_dev
->speed
) {
145 mcr
|= MAC_MCR_SPEED_1000
;
148 mcr
|= MAC_MCR_SPEED_100
;
152 if (mac
->phy_dev
->link
)
153 mcr
|= MAC_MCR_FORCE_LINK
;
155 if (mac
->phy_dev
->duplex
) {
156 mcr
|= MAC_MCR_FORCE_DPX
;
158 if (mac
->phy_dev
->pause
)
159 rmt_adv
= LPA_PAUSE_CAP
;
160 if (mac
->phy_dev
->asym_pause
)
161 rmt_adv
|= LPA_PAUSE_ASYM
;
163 if (mac
->phy_dev
->advertising
& ADVERTISED_Pause
)
164 lcl_adv
|= ADVERTISE_PAUSE_CAP
;
165 if (mac
->phy_dev
->advertising
& ADVERTISED_Asym_Pause
)
166 lcl_adv
|= ADVERTISE_PAUSE_ASYM
;
168 flowctrl
= mii_resolve_flowctrl_fdx(lcl_adv
, rmt_adv
);
170 if (flowctrl
& FLOW_CTRL_TX
)
171 mcr
|= MAC_MCR_FORCE_TX_FC
;
172 if (flowctrl
& FLOW_CTRL_RX
)
173 mcr
|= MAC_MCR_FORCE_RX_FC
;
175 netif_dbg(mac
->hw
, link
, dev
, "rx pause %s, tx pause %s\n",
176 flowctrl
& FLOW_CTRL_RX
? "enabled" : "disabled",
177 flowctrl
& FLOW_CTRL_TX
? "enabled" : "disabled");
180 mtk_w32(mac
->hw
, mcr
, MTK_MAC_MCR(mac
->id
));
182 if (mac
->phy_dev
->link
)
183 netif_carrier_on(dev
);
185 netif_carrier_off(dev
);
188 static int mtk_phy_connect_node(struct mtk_eth
*eth
, struct mtk_mac
*mac
,
189 struct device_node
*phy_node
)
191 const __be32
*_addr
= NULL
;
192 struct phy_device
*phydev
;
195 _addr
= of_get_property(phy_node
, "reg", NULL
);
197 if (!_addr
|| (be32_to_cpu(*_addr
) >= 0x20)) {
198 pr_err("%s: invalid phy address\n", phy_node
->name
);
201 addr
= be32_to_cpu(*_addr
);
202 phy_mode
= of_get_phy_mode(phy_node
);
204 dev_err(eth
->dev
, "incorrect phy-mode %d\n", phy_mode
);
208 phydev
= of_phy_connect(eth
->netdev
[mac
->id
], phy_node
,
209 mtk_phy_link_adjust
, 0, phy_mode
);
211 dev_err(eth
->dev
, "could not connect to PHY\n");
216 "connected mac %d to PHY at %s [uid=%08x, driver=%s]\n",
217 mac
->id
, phydev_name(phydev
), phydev
->phy_id
,
220 mac
->phy_dev
= phydev
;
225 static int mtk_phy_connect(struct mtk_mac
*mac
)
227 struct mtk_eth
*eth
= mac
->hw
;
228 struct device_node
*np
;
231 np
= of_parse_phandle(mac
->of_node
, "phy-handle", 0);
232 if (!np
&& of_phy_is_fixed_link(mac
->of_node
))
233 if (!of_phy_register_fixed_link(mac
->of_node
))
234 np
= of_node_get(mac
->of_node
);
238 switch (of_get_phy_mode(np
)) {
239 case PHY_INTERFACE_MODE_RGMII_TXID
:
240 case PHY_INTERFACE_MODE_RGMII_RXID
:
241 case PHY_INTERFACE_MODE_RGMII_ID
:
242 case PHY_INTERFACE_MODE_RGMII
:
245 case PHY_INTERFACE_MODE_MII
:
248 case PHY_INTERFACE_MODE_REVMII
:
251 case PHY_INTERFACE_MODE_RMII
:
260 /* put the gmac into the right mode */
261 regmap_read(eth
->ethsys
, ETHSYS_SYSCFG0
, &val
);
262 val
&= ~SYSCFG0_GE_MODE(SYSCFG0_GE_MASK
, mac
->id
);
263 val
|= SYSCFG0_GE_MODE(ge_mode
, mac
->id
);
264 regmap_write(eth
->ethsys
, ETHSYS_SYSCFG0
, val
);
266 mtk_phy_connect_node(eth
, mac
, np
);
267 mac
->phy_dev
->autoneg
= AUTONEG_ENABLE
;
268 mac
->phy_dev
->speed
= 0;
269 mac
->phy_dev
->duplex
= 0;
271 if (of_phy_is_fixed_link(mac
->of_node
))
272 mac
->phy_dev
->supported
|=
273 SUPPORTED_Pause
| SUPPORTED_Asym_Pause
;
275 mac
->phy_dev
->supported
&= PHY_GBIT_FEATURES
| SUPPORTED_Pause
|
276 SUPPORTED_Asym_Pause
;
277 mac
->phy_dev
->advertising
= mac
->phy_dev
->supported
|
279 phy_start_aneg(mac
->phy_dev
);
287 dev_err(eth
->dev
, "invalid phy_mode\n");
291 static int mtk_mdio_init(struct mtk_eth
*eth
)
293 struct device_node
*mii_np
;
296 mii_np
= of_get_child_by_name(eth
->dev
->of_node
, "mdio-bus");
298 dev_err(eth
->dev
, "no %s child node found", "mdio-bus");
302 if (!of_device_is_available(mii_np
)) {
307 eth
->mii_bus
= mdiobus_alloc();
313 eth
->mii_bus
->name
= "mdio";
314 eth
->mii_bus
->read
= mtk_mdio_read
;
315 eth
->mii_bus
->write
= mtk_mdio_write
;
316 eth
->mii_bus
->priv
= eth
;
317 eth
->mii_bus
->parent
= eth
->dev
;
319 snprintf(eth
->mii_bus
->id
, MII_BUS_ID_SIZE
, "%s", mii_np
->name
);
320 err
= of_mdiobus_register(eth
->mii_bus
, mii_np
);
327 mdiobus_free(eth
->mii_bus
);
335 static void mtk_mdio_cleanup(struct mtk_eth
*eth
)
340 mdiobus_unregister(eth
->mii_bus
);
341 of_node_put(eth
->mii_bus
->dev
.of_node
);
342 mdiobus_free(eth
->mii_bus
);
345 static inline void mtk_irq_disable(struct mtk_eth
*eth
, u32 mask
)
350 spin_lock_irqsave(ð
->irq_lock
, flags
);
351 val
= mtk_r32(eth
, MTK_QDMA_INT_MASK
);
352 mtk_w32(eth
, val
& ~mask
, MTK_QDMA_INT_MASK
);
353 spin_unlock_irqrestore(ð
->irq_lock
, flags
);
356 static inline void mtk_irq_enable(struct mtk_eth
*eth
, u32 mask
)
361 spin_lock_irqsave(ð
->irq_lock
, flags
);
362 val
= mtk_r32(eth
, MTK_QDMA_INT_MASK
);
363 mtk_w32(eth
, val
| mask
, MTK_QDMA_INT_MASK
);
364 spin_unlock_irqrestore(ð
->irq_lock
, flags
);
367 static int mtk_set_mac_address(struct net_device
*dev
, void *p
)
369 int ret
= eth_mac_addr(dev
, p
);
370 struct mtk_mac
*mac
= netdev_priv(dev
);
371 const char *macaddr
= dev
->dev_addr
;
377 spin_lock_irqsave(&mac
->hw
->page_lock
, flags
);
378 mtk_w32(mac
->hw
, (macaddr
[0] << 8) | macaddr
[1],
379 MTK_GDMA_MAC_ADRH(mac
->id
));
380 mtk_w32(mac
->hw
, (macaddr
[2] << 24) | (macaddr
[3] << 16) |
381 (macaddr
[4] << 8) | macaddr
[5],
382 MTK_GDMA_MAC_ADRL(mac
->id
));
383 spin_unlock_irqrestore(&mac
->hw
->page_lock
, flags
);
388 void mtk_stats_update_mac(struct mtk_mac
*mac
)
390 struct mtk_hw_stats
*hw_stats
= mac
->hw_stats
;
391 unsigned int base
= MTK_GDM1_TX_GBCNT
;
394 base
+= hw_stats
->reg_offset
;
396 u64_stats_update_begin(&hw_stats
->syncp
);
398 hw_stats
->rx_bytes
+= mtk_r32(mac
->hw
, base
);
399 stats
= mtk_r32(mac
->hw
, base
+ 0x04);
401 hw_stats
->rx_bytes
+= (stats
<< 32);
402 hw_stats
->rx_packets
+= mtk_r32(mac
->hw
, base
+ 0x08);
403 hw_stats
->rx_overflow
+= mtk_r32(mac
->hw
, base
+ 0x10);
404 hw_stats
->rx_fcs_errors
+= mtk_r32(mac
->hw
, base
+ 0x14);
405 hw_stats
->rx_short_errors
+= mtk_r32(mac
->hw
, base
+ 0x18);
406 hw_stats
->rx_long_errors
+= mtk_r32(mac
->hw
, base
+ 0x1c);
407 hw_stats
->rx_checksum_errors
+= mtk_r32(mac
->hw
, base
+ 0x20);
408 hw_stats
->rx_flow_control_packets
+=
409 mtk_r32(mac
->hw
, base
+ 0x24);
410 hw_stats
->tx_skip
+= mtk_r32(mac
->hw
, base
+ 0x28);
411 hw_stats
->tx_collisions
+= mtk_r32(mac
->hw
, base
+ 0x2c);
412 hw_stats
->tx_bytes
+= mtk_r32(mac
->hw
, base
+ 0x30);
413 stats
= mtk_r32(mac
->hw
, base
+ 0x34);
415 hw_stats
->tx_bytes
+= (stats
<< 32);
416 hw_stats
->tx_packets
+= mtk_r32(mac
->hw
, base
+ 0x38);
417 u64_stats_update_end(&hw_stats
->syncp
);
420 static void mtk_stats_update(struct mtk_eth
*eth
)
424 for (i
= 0; i
< MTK_MAC_COUNT
; i
++) {
425 if (!eth
->mac
[i
] || !eth
->mac
[i
]->hw_stats
)
427 if (spin_trylock(ð
->mac
[i
]->hw_stats
->stats_lock
)) {
428 mtk_stats_update_mac(eth
->mac
[i
]);
429 spin_unlock(ð
->mac
[i
]->hw_stats
->stats_lock
);
434 static struct rtnl_link_stats64
*mtk_get_stats64(struct net_device
*dev
,
435 struct rtnl_link_stats64
*storage
)
437 struct mtk_mac
*mac
= netdev_priv(dev
);
438 struct mtk_hw_stats
*hw_stats
= mac
->hw_stats
;
441 if (netif_running(dev
) && netif_device_present(dev
)) {
442 if (spin_trylock(&hw_stats
->stats_lock
)) {
443 mtk_stats_update_mac(mac
);
444 spin_unlock(&hw_stats
->stats_lock
);
449 start
= u64_stats_fetch_begin_irq(&hw_stats
->syncp
);
450 storage
->rx_packets
= hw_stats
->rx_packets
;
451 storage
->tx_packets
= hw_stats
->tx_packets
;
452 storage
->rx_bytes
= hw_stats
->rx_bytes
;
453 storage
->tx_bytes
= hw_stats
->tx_bytes
;
454 storage
->collisions
= hw_stats
->tx_collisions
;
455 storage
->rx_length_errors
= hw_stats
->rx_short_errors
+
456 hw_stats
->rx_long_errors
;
457 storage
->rx_over_errors
= hw_stats
->rx_overflow
;
458 storage
->rx_crc_errors
= hw_stats
->rx_fcs_errors
;
459 storage
->rx_errors
= hw_stats
->rx_checksum_errors
;
460 storage
->tx_aborted_errors
= hw_stats
->tx_skip
;
461 } while (u64_stats_fetch_retry_irq(&hw_stats
->syncp
, start
));
463 storage
->tx_errors
= dev
->stats
.tx_errors
;
464 storage
->rx_dropped
= dev
->stats
.rx_dropped
;
465 storage
->tx_dropped
= dev
->stats
.tx_dropped
;
470 static inline int mtk_max_frag_size(int mtu
)
472 /* make sure buf_size will be at least MTK_MAX_RX_LENGTH */
473 if (mtu
+ MTK_RX_ETH_HLEN
< MTK_MAX_RX_LENGTH
)
474 mtu
= MTK_MAX_RX_LENGTH
- MTK_RX_ETH_HLEN
;
476 return SKB_DATA_ALIGN(MTK_RX_HLEN
+ mtu
) +
477 SKB_DATA_ALIGN(sizeof(struct skb_shared_info
));
480 static inline int mtk_max_buf_size(int frag_size
)
482 int buf_size
= frag_size
- NET_SKB_PAD
- NET_IP_ALIGN
-
483 SKB_DATA_ALIGN(sizeof(struct skb_shared_info
));
485 WARN_ON(buf_size
< MTK_MAX_RX_LENGTH
);
490 static inline void mtk_rx_get_desc(struct mtk_rx_dma
*rxd
,
491 struct mtk_rx_dma
*dma_rxd
)
493 rxd
->rxd1
= READ_ONCE(dma_rxd
->rxd1
);
494 rxd
->rxd2
= READ_ONCE(dma_rxd
->rxd2
);
495 rxd
->rxd3
= READ_ONCE(dma_rxd
->rxd3
);
496 rxd
->rxd4
= READ_ONCE(dma_rxd
->rxd4
);
499 /* the qdma core needs scratch memory to be setup */
500 static int mtk_init_fq_dma(struct mtk_eth
*eth
)
502 dma_addr_t phy_ring_tail
;
503 int cnt
= MTK_DMA_SIZE
;
507 eth
->scratch_ring
= dma_alloc_coherent(eth
->dev
,
508 cnt
* sizeof(struct mtk_tx_dma
),
509 ð
->phy_scratch_ring
,
510 GFP_ATOMIC
| __GFP_ZERO
);
511 if (unlikely(!eth
->scratch_ring
))
514 eth
->scratch_head
= kcalloc(cnt
, MTK_QDMA_PAGE_SIZE
,
516 if (unlikely(!eth
->scratch_head
))
519 dma_addr
= dma_map_single(eth
->dev
,
520 eth
->scratch_head
, cnt
* MTK_QDMA_PAGE_SIZE
,
522 if (unlikely(dma_mapping_error(eth
->dev
, dma_addr
)))
525 memset(eth
->scratch_ring
, 0x0, sizeof(struct mtk_tx_dma
) * cnt
);
526 phy_ring_tail
= eth
->phy_scratch_ring
+
527 (sizeof(struct mtk_tx_dma
) * (cnt
- 1));
529 for (i
= 0; i
< cnt
; i
++) {
530 eth
->scratch_ring
[i
].txd1
=
531 (dma_addr
+ (i
* MTK_QDMA_PAGE_SIZE
));
533 eth
->scratch_ring
[i
].txd2
= (eth
->phy_scratch_ring
+
534 ((i
+ 1) * sizeof(struct mtk_tx_dma
)));
535 eth
->scratch_ring
[i
].txd3
= TX_DMA_SDL(MTK_QDMA_PAGE_SIZE
);
538 mtk_w32(eth
, eth
->phy_scratch_ring
, MTK_QDMA_FQ_HEAD
);
539 mtk_w32(eth
, phy_ring_tail
, MTK_QDMA_FQ_TAIL
);
540 mtk_w32(eth
, (cnt
<< 16) | cnt
, MTK_QDMA_FQ_CNT
);
541 mtk_w32(eth
, MTK_QDMA_PAGE_SIZE
<< 16, MTK_QDMA_FQ_BLEN
);
546 static inline void *mtk_qdma_phys_to_virt(struct mtk_tx_ring
*ring
, u32 desc
)
548 void *ret
= ring
->dma
;
550 return ret
+ (desc
- ring
->phys
);
553 static inline struct mtk_tx_buf
*mtk_desc_to_tx_buf(struct mtk_tx_ring
*ring
,
554 struct mtk_tx_dma
*txd
)
556 int idx
= txd
- ring
->dma
;
558 return &ring
->buf
[idx
];
561 static void mtk_tx_unmap(struct mtk_eth
*eth
, struct mtk_tx_buf
*tx_buf
)
563 if (tx_buf
->flags
& MTK_TX_FLAGS_SINGLE0
) {
564 dma_unmap_single(eth
->dev
,
565 dma_unmap_addr(tx_buf
, dma_addr0
),
566 dma_unmap_len(tx_buf
, dma_len0
),
568 } else if (tx_buf
->flags
& MTK_TX_FLAGS_PAGE0
) {
569 dma_unmap_page(eth
->dev
,
570 dma_unmap_addr(tx_buf
, dma_addr0
),
571 dma_unmap_len(tx_buf
, dma_len0
),
576 (tx_buf
->skb
!= (struct sk_buff
*)MTK_DMA_DUMMY_DESC
))
577 dev_kfree_skb_any(tx_buf
->skb
);
581 static int mtk_tx_map(struct sk_buff
*skb
, struct net_device
*dev
,
582 int tx_num
, struct mtk_tx_ring
*ring
, bool gso
)
584 struct mtk_mac
*mac
= netdev_priv(dev
);
585 struct mtk_eth
*eth
= mac
->hw
;
586 struct mtk_tx_dma
*itxd
, *txd
;
587 struct mtk_tx_buf
*tx_buf
;
588 dma_addr_t mapped_addr
;
589 unsigned int nr_frags
;
593 itxd
= ring
->next_free
;
594 if (itxd
== ring
->last_free
)
597 /* set the forward port */
598 txd4
|= (mac
->id
+ 1) << TX_DMA_FPORT_SHIFT
;
600 tx_buf
= mtk_desc_to_tx_buf(ring
, itxd
);
601 memset(tx_buf
, 0, sizeof(*tx_buf
));
606 /* TX Checksum offload */
607 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
608 txd4
|= TX_DMA_CHKSUM
;
610 /* VLAN header offload */
611 if (skb_vlan_tag_present(skb
))
612 txd4
|= TX_DMA_INS_VLAN
| skb_vlan_tag_get(skb
);
614 mapped_addr
= dma_map_single(eth
->dev
, skb
->data
,
615 skb_headlen(skb
), DMA_TO_DEVICE
);
616 if (unlikely(dma_mapping_error(eth
->dev
, mapped_addr
)))
619 WRITE_ONCE(itxd
->txd1
, mapped_addr
);
620 tx_buf
->flags
|= MTK_TX_FLAGS_SINGLE0
;
621 dma_unmap_addr_set(tx_buf
, dma_addr0
, mapped_addr
);
622 dma_unmap_len_set(tx_buf
, dma_len0
, skb_headlen(skb
));
626 nr_frags
= skb_shinfo(skb
)->nr_frags
;
627 for (i
= 0; i
< nr_frags
; i
++) {
628 struct skb_frag_struct
*frag
= &skb_shinfo(skb
)->frags
[i
];
629 unsigned int offset
= 0;
630 int frag_size
= skb_frag_size(frag
);
633 bool last_frag
= false;
634 unsigned int frag_map_size
;
636 txd
= mtk_qdma_phys_to_virt(ring
, txd
->txd2
);
637 if (txd
== ring
->last_free
)
641 frag_map_size
= min(frag_size
, MTK_TX_DMA_BUF_LEN
);
642 mapped_addr
= skb_frag_dma_map(eth
->dev
, frag
, offset
,
645 if (unlikely(dma_mapping_error(eth
->dev
, mapped_addr
)))
648 if (i
== nr_frags
- 1 &&
649 (frag_size
- frag_map_size
) == 0)
652 WRITE_ONCE(txd
->txd1
, mapped_addr
);
653 WRITE_ONCE(txd
->txd3
, (TX_DMA_SWC
|
654 TX_DMA_PLEN0(frag_map_size
) |
655 last_frag
* TX_DMA_LS0
));
656 WRITE_ONCE(txd
->txd4
, 0);
658 tx_buf
->skb
= (struct sk_buff
*)MTK_DMA_DUMMY_DESC
;
659 tx_buf
= mtk_desc_to_tx_buf(ring
, txd
);
660 memset(tx_buf
, 0, sizeof(*tx_buf
));
662 tx_buf
->flags
|= MTK_TX_FLAGS_PAGE0
;
663 dma_unmap_addr_set(tx_buf
, dma_addr0
, mapped_addr
);
664 dma_unmap_len_set(tx_buf
, dma_len0
, frag_map_size
);
665 frag_size
-= frag_map_size
;
666 offset
+= frag_map_size
;
670 /* store skb to cleanup */
673 WRITE_ONCE(itxd
->txd4
, txd4
);
674 WRITE_ONCE(itxd
->txd3
, (TX_DMA_SWC
| TX_DMA_PLEN0(skb_headlen(skb
)) |
675 (!nr_frags
* TX_DMA_LS0
)));
677 netdev_sent_queue(dev
, skb
->len
);
678 skb_tx_timestamp(skb
);
680 ring
->next_free
= mtk_qdma_phys_to_virt(ring
, txd
->txd2
);
681 atomic_sub(n_desc
, &ring
->free_count
);
683 /* make sure that all changes to the dma ring are flushed before we
688 if (netif_xmit_stopped(netdev_get_tx_queue(dev
, 0)) || !skb
->xmit_more
)
689 mtk_w32(eth
, txd
->txd2
, MTK_QTX_CTX_PTR
);
695 tx_buf
= mtk_desc_to_tx_buf(ring
, itxd
);
698 mtk_tx_unmap(eth
, tx_buf
);
700 itxd
->txd3
= TX_DMA_LS0
| TX_DMA_OWNER_CPU
;
701 itxd
= mtk_qdma_phys_to_virt(ring
, itxd
->txd2
);
702 } while (itxd
!= txd
);
707 static inline int mtk_cal_txd_req(struct sk_buff
*skb
)
710 struct skb_frag_struct
*frag
;
713 if (skb_is_gso(skb
)) {
714 for (i
= 0; i
< skb_shinfo(skb
)->nr_frags
; i
++) {
715 frag
= &skb_shinfo(skb
)->frags
[i
];
716 nfrags
+= DIV_ROUND_UP(frag
->size
, MTK_TX_DMA_BUF_LEN
);
719 nfrags
+= skb_shinfo(skb
)->nr_frags
;
725 static int mtk_queue_stopped(struct mtk_eth
*eth
)
729 for (i
= 0; i
< MTK_MAC_COUNT
; i
++) {
732 if (netif_queue_stopped(eth
->netdev
[i
]))
739 static void mtk_wake_queue(struct mtk_eth
*eth
)
743 for (i
= 0; i
< MTK_MAC_COUNT
; i
++) {
746 netif_wake_queue(eth
->netdev
[i
]);
750 static void mtk_stop_queue(struct mtk_eth
*eth
)
754 for (i
= 0; i
< MTK_MAC_COUNT
; i
++) {
757 netif_stop_queue(eth
->netdev
[i
]);
761 static int mtk_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
763 struct mtk_mac
*mac
= netdev_priv(dev
);
764 struct mtk_eth
*eth
= mac
->hw
;
765 struct mtk_tx_ring
*ring
= ð
->tx_ring
;
766 struct net_device_stats
*stats
= &dev
->stats
;
771 /* normally we can rely on the stack not calling this more than once,
772 * however we have 2 queues running on the same ring so we need to lock
775 spin_lock_irqsave(ð
->page_lock
, flags
);
777 tx_num
= mtk_cal_txd_req(skb
);
778 if (unlikely(atomic_read(&ring
->free_count
) <= tx_num
)) {
780 netif_err(eth
, tx_queued
, dev
,
781 "Tx Ring full when queue awake!\n");
782 spin_unlock_irqrestore(ð
->page_lock
, flags
);
783 return NETDEV_TX_BUSY
;
786 /* TSO: fill MSS info in tcp checksum field */
787 if (skb_is_gso(skb
)) {
788 if (skb_cow_head(skb
, 0)) {
789 netif_warn(eth
, tx_err
, dev
,
790 "GSO expand head fail.\n");
794 if (skb_shinfo(skb
)->gso_type
&
795 (SKB_GSO_TCPV4
| SKB_GSO_TCPV6
)) {
797 tcp_hdr(skb
)->check
= htons(skb_shinfo(skb
)->gso_size
);
801 if (mtk_tx_map(skb
, dev
, tx_num
, ring
, gso
) < 0)
804 if (unlikely(atomic_read(&ring
->free_count
) <= ring
->thresh
))
807 spin_unlock_irqrestore(ð
->page_lock
, flags
);
812 spin_unlock_irqrestore(ð
->page_lock
, flags
);
818 static int mtk_poll_rx(struct napi_struct
*napi
, int budget
,
821 struct mtk_rx_ring
*ring
= ð
->rx_ring
;
822 int idx
= ring
->calc_idx
;
825 struct mtk_rx_dma
*rxd
, trxd
;
828 while (done
< budget
) {
829 struct net_device
*netdev
;
834 idx
= NEXT_RX_DESP_IDX(idx
);
835 rxd
= &ring
->dma
[idx
];
836 data
= ring
->data
[idx
];
838 mtk_rx_get_desc(&trxd
, rxd
);
839 if (!(trxd
.rxd2
& RX_DMA_DONE
))
842 /* find out which mac the packet come from. values start at 1 */
843 mac
= (trxd
.rxd4
>> RX_DMA_FPORT_SHIFT
) &
847 netdev
= eth
->netdev
[mac
];
849 /* alloc new buffer */
850 new_data
= napi_alloc_frag(ring
->frag_size
);
851 if (unlikely(!new_data
)) {
852 netdev
->stats
.rx_dropped
++;
855 dma_addr
= dma_map_single(eth
->dev
,
856 new_data
+ NET_SKB_PAD
,
859 if (unlikely(dma_mapping_error(eth
->dev
, dma_addr
))) {
860 skb_free_frag(new_data
);
861 netdev
->stats
.rx_dropped
++;
866 skb
= build_skb(data
, ring
->frag_size
);
867 if (unlikely(!skb
)) {
868 put_page(virt_to_head_page(new_data
));
869 netdev
->stats
.rx_dropped
++;
872 skb_reserve(skb
, NET_SKB_PAD
+ NET_IP_ALIGN
);
874 dma_unmap_single(eth
->dev
, trxd
.rxd1
,
875 ring
->buf_size
, DMA_FROM_DEVICE
);
876 pktlen
= RX_DMA_GET_PLEN0(trxd
.rxd2
);
878 skb_put(skb
, pktlen
);
879 if (trxd
.rxd4
& RX_DMA_L4_VALID
)
880 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
882 skb_checksum_none_assert(skb
);
883 skb
->protocol
= eth_type_trans(skb
, netdev
);
885 if (netdev
->features
& NETIF_F_HW_VLAN_CTAG_RX
&&
886 RX_DMA_VID(trxd
.rxd3
))
887 __vlan_hwaccel_put_tag(skb
, htons(ETH_P_8021Q
),
888 RX_DMA_VID(trxd
.rxd3
));
889 napi_gro_receive(napi
, skb
);
891 ring
->data
[idx
] = new_data
;
892 rxd
->rxd1
= (unsigned int)dma_addr
;
895 rxd
->rxd2
= RX_DMA_PLEN0(ring
->buf_size
);
897 ring
->calc_idx
= idx
;
898 /* make sure that all changes to the dma ring are flushed before
902 mtk_w32(eth
, ring
->calc_idx
, MTK_QRX_CRX_IDX0
);
907 mtk_w32(eth
, MTK_RX_DONE_INT
, MTK_QMTK_INT_STATUS
);
912 static int mtk_poll_tx(struct mtk_eth
*eth
, int budget
)
914 struct mtk_tx_ring
*ring
= ð
->tx_ring
;
915 struct mtk_tx_dma
*desc
;
917 struct mtk_tx_buf
*tx_buf
;
918 unsigned int done
[MTK_MAX_DEVS
];
919 unsigned int bytes
[MTK_MAX_DEVS
];
921 static int condition
;
924 memset(done
, 0, sizeof(done
));
925 memset(bytes
, 0, sizeof(bytes
));
927 cpu
= mtk_r32(eth
, MTK_QTX_CRX_PTR
);
928 dma
= mtk_r32(eth
, MTK_QTX_DRX_PTR
);
930 desc
= mtk_qdma_phys_to_virt(ring
, cpu
);
932 while ((cpu
!= dma
) && budget
) {
933 u32 next_cpu
= desc
->txd2
;
936 desc
= mtk_qdma_phys_to_virt(ring
, desc
->txd2
);
937 if ((desc
->txd3
& TX_DMA_OWNER_CPU
) == 0)
940 mac
= (desc
->txd4
>> TX_DMA_FPORT_SHIFT
) &
944 tx_buf
= mtk_desc_to_tx_buf(ring
, desc
);
951 if (skb
!= (struct sk_buff
*)MTK_DMA_DUMMY_DESC
) {
952 bytes
[mac
] += skb
->len
;
956 mtk_tx_unmap(eth
, tx_buf
);
958 ring
->last_free
= desc
;
959 atomic_inc(&ring
->free_count
);
964 mtk_w32(eth
, cpu
, MTK_QTX_CRX_PTR
);
966 for (i
= 0; i
< MTK_MAC_COUNT
; i
++) {
967 if (!eth
->netdev
[i
] || !done
[i
])
969 netdev_completed_queue(eth
->netdev
[i
], done
[i
], bytes
[i
]);
973 if (mtk_queue_stopped(eth
) &&
974 (atomic_read(&ring
->free_count
) > ring
->thresh
))
980 static void mtk_handle_status_irq(struct mtk_eth
*eth
)
982 u32 status2
= mtk_r32(eth
, MTK_INT_STATUS2
);
984 if (unlikely(status2
& (MTK_GDM1_AF
| MTK_GDM2_AF
))) {
985 mtk_stats_update(eth
);
986 mtk_w32(eth
, (MTK_GDM1_AF
| MTK_GDM2_AF
),
991 static int mtk_napi_tx(struct napi_struct
*napi
, int budget
)
993 struct mtk_eth
*eth
= container_of(napi
, struct mtk_eth
, tx_napi
);
997 mtk_handle_status_irq(eth
);
998 mtk_w32(eth
, MTK_TX_DONE_INT
, MTK_QMTK_INT_STATUS
);
999 tx_done
= mtk_poll_tx(eth
, budget
);
1001 if (unlikely(netif_msg_intr(eth
))) {
1002 status
= mtk_r32(eth
, MTK_QMTK_INT_STATUS
);
1003 mask
= mtk_r32(eth
, MTK_QDMA_INT_MASK
);
1005 "done tx %d, intr 0x%08x/0x%x\n",
1006 tx_done
, status
, mask
);
1009 if (tx_done
== budget
)
1012 status
= mtk_r32(eth
, MTK_QMTK_INT_STATUS
);
1013 if (status
& MTK_TX_DONE_INT
)
1016 napi_complete(napi
);
1017 mtk_irq_enable(eth
, MTK_TX_DONE_INT
);
1022 static int mtk_napi_rx(struct napi_struct
*napi
, int budget
)
1024 struct mtk_eth
*eth
= container_of(napi
, struct mtk_eth
, rx_napi
);
1028 mtk_handle_status_irq(eth
);
1029 mtk_w32(eth
, MTK_RX_DONE_INT
, MTK_QMTK_INT_STATUS
);
1030 rx_done
= mtk_poll_rx(napi
, budget
, eth
);
1032 if (unlikely(netif_msg_intr(eth
))) {
1033 status
= mtk_r32(eth
, MTK_QMTK_INT_STATUS
);
1034 mask
= mtk_r32(eth
, MTK_QDMA_INT_MASK
);
1036 "done rx %d, intr 0x%08x/0x%x\n",
1037 rx_done
, status
, mask
);
1040 if (rx_done
== budget
)
1043 status
= mtk_r32(eth
, MTK_QMTK_INT_STATUS
);
1044 if (status
& MTK_RX_DONE_INT
)
1047 napi_complete(napi
);
1048 mtk_irq_enable(eth
, MTK_RX_DONE_INT
);
1053 static int mtk_tx_alloc(struct mtk_eth
*eth
)
1055 struct mtk_tx_ring
*ring
= ð
->tx_ring
;
1056 int i
, sz
= sizeof(*ring
->dma
);
1058 ring
->buf
= kcalloc(MTK_DMA_SIZE
, sizeof(*ring
->buf
),
1063 ring
->dma
= dma_alloc_coherent(eth
->dev
,
1066 GFP_ATOMIC
| __GFP_ZERO
);
1070 memset(ring
->dma
, 0, MTK_DMA_SIZE
* sz
);
1071 for (i
= 0; i
< MTK_DMA_SIZE
; i
++) {
1072 int next
= (i
+ 1) % MTK_DMA_SIZE
;
1073 u32 next_ptr
= ring
->phys
+ next
* sz
;
1075 ring
->dma
[i
].txd2
= next_ptr
;
1076 ring
->dma
[i
].txd3
= TX_DMA_LS0
| TX_DMA_OWNER_CPU
;
1079 atomic_set(&ring
->free_count
, MTK_DMA_SIZE
- 2);
1080 ring
->next_free
= &ring
->dma
[0];
1081 ring
->last_free
= &ring
->dma
[MTK_DMA_SIZE
- 1];
1082 ring
->thresh
= MAX_SKB_FRAGS
;
1084 /* make sure that all changes to the dma ring are flushed before we
1089 mtk_w32(eth
, ring
->phys
, MTK_QTX_CTX_PTR
);
1090 mtk_w32(eth
, ring
->phys
, MTK_QTX_DTX_PTR
);
1092 ring
->phys
+ ((MTK_DMA_SIZE
- 1) * sz
),
1095 ring
->phys
+ ((MTK_DMA_SIZE
- 1) * sz
),
1104 static void mtk_tx_clean(struct mtk_eth
*eth
)
1106 struct mtk_tx_ring
*ring
= ð
->tx_ring
;
1110 for (i
= 0; i
< MTK_DMA_SIZE
; i
++)
1111 mtk_tx_unmap(eth
, &ring
->buf
[i
]);
1117 dma_free_coherent(eth
->dev
,
1118 MTK_DMA_SIZE
* sizeof(*ring
->dma
),
1125 static int mtk_rx_alloc(struct mtk_eth
*eth
)
1127 struct mtk_rx_ring
*ring
= ð
->rx_ring
;
1130 ring
->frag_size
= mtk_max_frag_size(ETH_DATA_LEN
);
1131 ring
->buf_size
= mtk_max_buf_size(ring
->frag_size
);
1132 ring
->data
= kcalloc(MTK_DMA_SIZE
, sizeof(*ring
->data
),
1137 for (i
= 0; i
< MTK_DMA_SIZE
; i
++) {
1138 ring
->data
[i
] = netdev_alloc_frag(ring
->frag_size
);
1143 ring
->dma
= dma_alloc_coherent(eth
->dev
,
1144 MTK_DMA_SIZE
* sizeof(*ring
->dma
),
1146 GFP_ATOMIC
| __GFP_ZERO
);
1150 for (i
= 0; i
< MTK_DMA_SIZE
; i
++) {
1151 dma_addr_t dma_addr
= dma_map_single(eth
->dev
,
1152 ring
->data
[i
] + NET_SKB_PAD
,
1155 if (unlikely(dma_mapping_error(eth
->dev
, dma_addr
)))
1157 ring
->dma
[i
].rxd1
= (unsigned int)dma_addr
;
1159 ring
->dma
[i
].rxd2
= RX_DMA_PLEN0(ring
->buf_size
);
1161 ring
->calc_idx
= MTK_DMA_SIZE
- 1;
1162 /* make sure that all changes to the dma ring are flushed before we
1167 mtk_w32(eth
, eth
->rx_ring
.phys
, MTK_QRX_BASE_PTR0
);
1168 mtk_w32(eth
, MTK_DMA_SIZE
, MTK_QRX_MAX_CNT0
);
1169 mtk_w32(eth
, eth
->rx_ring
.calc_idx
, MTK_QRX_CRX_IDX0
);
1170 mtk_w32(eth
, MTK_PST_DRX_IDX0
, MTK_QDMA_RST_IDX
);
1171 mtk_w32(eth
, (QDMA_RES_THRES
<< 8) | QDMA_RES_THRES
, MTK_QTX_CFG(0));
1176 static void mtk_rx_clean(struct mtk_eth
*eth
)
1178 struct mtk_rx_ring
*ring
= ð
->rx_ring
;
1181 if (ring
->data
&& ring
->dma
) {
1182 for (i
= 0; i
< MTK_DMA_SIZE
; i
++) {
1185 if (!ring
->dma
[i
].rxd1
)
1187 dma_unmap_single(eth
->dev
,
1191 skb_free_frag(ring
->data
[i
]);
1198 dma_free_coherent(eth
->dev
,
1199 MTK_DMA_SIZE
* sizeof(*ring
->dma
),
1206 /* wait for DMA to finish whatever it is doing before we start using it again */
1207 static int mtk_dma_busy_wait(struct mtk_eth
*eth
)
1209 unsigned long t_start
= jiffies
;
1212 if (!(mtk_r32(eth
, MTK_QDMA_GLO_CFG
) &
1213 (MTK_RX_DMA_BUSY
| MTK_TX_DMA_BUSY
)))
1215 if (time_after(jiffies
, t_start
+ MTK_DMA_BUSY_TIMEOUT
))
1219 dev_err(eth
->dev
, "DMA init timeout\n");
1223 static int mtk_dma_init(struct mtk_eth
*eth
)
1227 if (mtk_dma_busy_wait(eth
))
1230 /* QDMA needs scratch memory for internal reordering of the
1233 err
= mtk_init_fq_dma(eth
);
1237 err
= mtk_tx_alloc(eth
);
1241 err
= mtk_rx_alloc(eth
);
1245 /* Enable random early drop and set drop threshold automatically */
1246 mtk_w32(eth
, FC_THRES_DROP_MODE
| FC_THRES_DROP_EN
| FC_THRES_MIN
,
1248 mtk_w32(eth
, 0x0, MTK_QDMA_HRED2
);
1253 static void mtk_dma_free(struct mtk_eth
*eth
)
1257 for (i
= 0; i
< MTK_MAC_COUNT
; i
++)
1259 netdev_reset_queue(eth
->netdev
[i
]);
1260 if (eth
->scratch_ring
) {
1261 dma_free_coherent(eth
->dev
,
1262 MTK_DMA_SIZE
* sizeof(struct mtk_tx_dma
),
1264 eth
->phy_scratch_ring
);
1265 eth
->scratch_ring
= NULL
;
1266 eth
->phy_scratch_ring
= 0;
1270 kfree(eth
->scratch_head
);
1273 static void mtk_tx_timeout(struct net_device
*dev
)
1275 struct mtk_mac
*mac
= netdev_priv(dev
);
1276 struct mtk_eth
*eth
= mac
->hw
;
1278 eth
->netdev
[mac
->id
]->stats
.tx_errors
++;
1279 netif_err(eth
, tx_err
, dev
,
1280 "transmit timed out\n");
1281 schedule_work(ð
->pending_work
);
1284 static irqreturn_t
mtk_handle_irq_rx(int irq
, void *_eth
)
1286 struct mtk_eth
*eth
= _eth
;
1288 if (likely(napi_schedule_prep(ð
->rx_napi
))) {
1289 __napi_schedule(ð
->rx_napi
);
1290 mtk_irq_disable(eth
, MTK_RX_DONE_INT
);
1296 static irqreturn_t
mtk_handle_irq_tx(int irq
, void *_eth
)
1298 struct mtk_eth
*eth
= _eth
;
1300 if (likely(napi_schedule_prep(ð
->tx_napi
))) {
1301 __napi_schedule(ð
->tx_napi
);
1302 mtk_irq_disable(eth
, MTK_TX_DONE_INT
);
1308 #ifdef CONFIG_NET_POLL_CONTROLLER
1309 static void mtk_poll_controller(struct net_device
*dev
)
1311 struct mtk_mac
*mac
= netdev_priv(dev
);
1312 struct mtk_eth
*eth
= mac
->hw
;
1313 u32 int_mask
= MTK_TX_DONE_INT
| MTK_RX_DONE_INT
;
1315 mtk_irq_disable(eth
, int_mask
);
1316 mtk_handle_irq_rx(eth
->irq
[2], dev
);
1317 mtk_irq_enable(eth
, int_mask
);
1321 static int mtk_start_dma(struct mtk_eth
*eth
)
1325 err
= mtk_dma_init(eth
);
1332 MTK_TX_WB_DDONE
| MTK_RX_DMA_EN
| MTK_TX_DMA_EN
|
1333 MTK_RX_2B_OFFSET
| MTK_DMA_SIZE_16DWORDS
|
1334 MTK_RX_BT_32DWORDS
| MTK_NDP_CO_PRO
,
1340 static int mtk_open(struct net_device
*dev
)
1342 struct mtk_mac
*mac
= netdev_priv(dev
);
1343 struct mtk_eth
*eth
= mac
->hw
;
1345 /* we run 2 netdevs on the same dma ring so we only bring it up once */
1346 if (!atomic_read(ð
->dma_refcnt
)) {
1347 int err
= mtk_start_dma(eth
);
1352 napi_enable(ð
->tx_napi
);
1353 napi_enable(ð
->rx_napi
);
1354 mtk_irq_enable(eth
, MTK_TX_DONE_INT
| MTK_RX_DONE_INT
);
1356 atomic_inc(ð
->dma_refcnt
);
1358 phy_start(mac
->phy_dev
);
1359 netif_start_queue(dev
);
1364 static void mtk_stop_dma(struct mtk_eth
*eth
, u32 glo_cfg
)
1366 unsigned long flags
;
1370 /* stop the dma engine */
1371 spin_lock_irqsave(ð
->page_lock
, flags
);
1372 val
= mtk_r32(eth
, glo_cfg
);
1373 mtk_w32(eth
, val
& ~(MTK_TX_WB_DDONE
| MTK_RX_DMA_EN
| MTK_TX_DMA_EN
),
1375 spin_unlock_irqrestore(ð
->page_lock
, flags
);
1377 /* wait for dma stop */
1378 for (i
= 0; i
< 10; i
++) {
1379 val
= mtk_r32(eth
, glo_cfg
);
1380 if (val
& (MTK_TX_DMA_BUSY
| MTK_RX_DMA_BUSY
)) {
1388 static int mtk_stop(struct net_device
*dev
)
1390 struct mtk_mac
*mac
= netdev_priv(dev
);
1391 struct mtk_eth
*eth
= mac
->hw
;
1393 netif_tx_disable(dev
);
1394 phy_stop(mac
->phy_dev
);
1396 /* only shutdown DMA if this is the last user */
1397 if (!atomic_dec_and_test(ð
->dma_refcnt
))
1400 mtk_irq_disable(eth
, MTK_TX_DONE_INT
| MTK_RX_DONE_INT
);
1401 napi_disable(ð
->tx_napi
);
1402 napi_disable(ð
->rx_napi
);
1404 mtk_stop_dma(eth
, MTK_QDMA_GLO_CFG
);
1411 static int __init
mtk_hw_init(struct mtk_eth
*eth
)
1415 /* reset the frame engine */
1416 reset_control_assert(eth
->rstc
);
1417 usleep_range(10, 20);
1418 reset_control_deassert(eth
->rstc
);
1419 usleep_range(10, 20);
1421 /* Set GE2 driving and slew rate */
1422 regmap_write(eth
->pctl
, GPIO_DRV_SEL10
, 0xa00);
1425 regmap_write(eth
->pctl
, GPIO_OD33_CTRL8
, 0x5);
1428 regmap_write(eth
->pctl
, GPIO_BIAS_CTRL
, 0x0);
1430 /* GE1, Force 1000M/FD, FC ON */
1431 mtk_w32(eth
, MAC_MCR_FIXED_LINK
, MTK_MAC_MCR(0));
1433 /* GE2, Force 1000M/FD, FC ON */
1434 mtk_w32(eth
, MAC_MCR_FIXED_LINK
, MTK_MAC_MCR(1));
1436 /* Enable RX VLan Offloading */
1437 mtk_w32(eth
, 1, MTK_CDMP_EG_CTRL
);
1439 err
= devm_request_irq(eth
->dev
, eth
->irq
[1], mtk_handle_irq_tx
, 0,
1440 dev_name(eth
->dev
), eth
);
1443 err
= devm_request_irq(eth
->dev
, eth
->irq
[2], mtk_handle_irq_rx
, 0,
1444 dev_name(eth
->dev
), eth
);
1448 err
= mtk_mdio_init(eth
);
1452 /* disable delay and normal interrupt */
1453 mtk_w32(eth
, 0, MTK_QDMA_DELAY_INT
);
1454 mtk_irq_disable(eth
, ~0);
1455 mtk_w32(eth
, RST_GL_PSE
, MTK_RST_GL
);
1456 mtk_w32(eth
, 0, MTK_RST_GL
);
1458 /* FE int grouping */
1459 mtk_w32(eth
, MTK_TX_DONE_INT
, MTK_PDMA_INT_GRP1
);
1460 mtk_w32(eth
, MTK_RX_DONE_INT
, MTK_PDMA_INT_GRP2
);
1461 mtk_w32(eth
, MTK_TX_DONE_INT
, MTK_QDMA_INT_GRP1
);
1462 mtk_w32(eth
, MTK_RX_DONE_INT
, MTK_QDMA_INT_GRP2
);
1463 mtk_w32(eth
, 0x21021000, MTK_FE_INT_GRP
);
1465 for (i
= 0; i
< 2; i
++) {
1466 u32 val
= mtk_r32(eth
, MTK_GDMA_FWD_CFG(i
));
1468 /* setup the forward port to send frame to QDMA */
1472 /* Enable RX checksum */
1473 val
|= MTK_GDMA_ICS_EN
| MTK_GDMA_TCS_EN
| MTK_GDMA_UCS_EN
;
1475 /* setup the mac dma */
1476 mtk_w32(eth
, val
, MTK_GDMA_FWD_CFG(i
));
1482 static int __init
mtk_init(struct net_device
*dev
)
1484 struct mtk_mac
*mac
= netdev_priv(dev
);
1485 struct mtk_eth
*eth
= mac
->hw
;
1486 const char *mac_addr
;
1488 mac_addr
= of_get_mac_address(mac
->of_node
);
1490 ether_addr_copy(dev
->dev_addr
, mac_addr
);
1492 /* If the mac address is invalid, use random mac address */
1493 if (!is_valid_ether_addr(dev
->dev_addr
)) {
1494 random_ether_addr(dev
->dev_addr
);
1495 dev_err(eth
->dev
, "generated random MAC address %pM\n",
1497 dev
->addr_assign_type
= NET_ADDR_RANDOM
;
1500 return mtk_phy_connect(mac
);
1503 static void mtk_uninit(struct net_device
*dev
)
1505 struct mtk_mac
*mac
= netdev_priv(dev
);
1506 struct mtk_eth
*eth
= mac
->hw
;
1508 phy_disconnect(mac
->phy_dev
);
1509 mtk_mdio_cleanup(eth
);
1510 mtk_irq_disable(eth
, ~0);
1511 free_irq(eth
->irq
[1], dev
);
1512 free_irq(eth
->irq
[2], dev
);
1515 static int mtk_do_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
1517 struct mtk_mac
*mac
= netdev_priv(dev
);
1523 return phy_mii_ioctl(mac
->phy_dev
, ifr
, cmd
);
1531 static void mtk_pending_work(struct work_struct
*work
)
1533 struct mtk_eth
*eth
= container_of(work
, struct mtk_eth
, pending_work
);
1535 unsigned long restart
= 0;
1539 /* stop all devices to make sure that dma is properly shut down */
1540 for (i
= 0; i
< MTK_MAC_COUNT
; i
++) {
1541 if (!eth
->netdev
[i
])
1543 mtk_stop(eth
->netdev
[i
]);
1544 __set_bit(i
, &restart
);
1547 /* restart DMA and enable IRQs */
1548 for (i
= 0; i
< MTK_MAC_COUNT
; i
++) {
1549 if (!test_bit(i
, &restart
))
1551 err
= mtk_open(eth
->netdev
[i
]);
1553 netif_alert(eth
, ifup
, eth
->netdev
[i
],
1554 "Driver up/down cycle failed, closing device.\n");
1555 dev_close(eth
->netdev
[i
]);
1561 static int mtk_cleanup(struct mtk_eth
*eth
)
1565 for (i
= 0; i
< MTK_MAC_COUNT
; i
++) {
1566 if (!eth
->netdev
[i
])
1569 unregister_netdev(eth
->netdev
[i
]);
1570 free_netdev(eth
->netdev
[i
]);
1572 cancel_work_sync(ð
->pending_work
);
1577 static int mtk_get_settings(struct net_device
*dev
,
1578 struct ethtool_cmd
*cmd
)
1580 struct mtk_mac
*mac
= netdev_priv(dev
);
1583 err
= phy_read_status(mac
->phy_dev
);
1587 return phy_ethtool_gset(mac
->phy_dev
, cmd
);
1590 static int mtk_set_settings(struct net_device
*dev
,
1591 struct ethtool_cmd
*cmd
)
1593 struct mtk_mac
*mac
= netdev_priv(dev
);
1595 if (cmd
->phy_address
!= mac
->phy_dev
->mdio
.addr
) {
1596 mac
->phy_dev
= mdiobus_get_phy(mac
->hw
->mii_bus
,
1602 return phy_ethtool_sset(mac
->phy_dev
, cmd
);
1605 static void mtk_get_drvinfo(struct net_device
*dev
,
1606 struct ethtool_drvinfo
*info
)
1608 struct mtk_mac
*mac
= netdev_priv(dev
);
1610 strlcpy(info
->driver
, mac
->hw
->dev
->driver
->name
, sizeof(info
->driver
));
1611 strlcpy(info
->bus_info
, dev_name(mac
->hw
->dev
), sizeof(info
->bus_info
));
1612 info
->n_stats
= ARRAY_SIZE(mtk_ethtool_stats
);
1615 static u32
mtk_get_msglevel(struct net_device
*dev
)
1617 struct mtk_mac
*mac
= netdev_priv(dev
);
1619 return mac
->hw
->msg_enable
;
1622 static void mtk_set_msglevel(struct net_device
*dev
, u32 value
)
1624 struct mtk_mac
*mac
= netdev_priv(dev
);
1626 mac
->hw
->msg_enable
= value
;
1629 static int mtk_nway_reset(struct net_device
*dev
)
1631 struct mtk_mac
*mac
= netdev_priv(dev
);
1633 return genphy_restart_aneg(mac
->phy_dev
);
1636 static u32
mtk_get_link(struct net_device
*dev
)
1638 struct mtk_mac
*mac
= netdev_priv(dev
);
1641 err
= genphy_update_link(mac
->phy_dev
);
1643 return ethtool_op_get_link(dev
);
1645 return mac
->phy_dev
->link
;
1648 static void mtk_get_strings(struct net_device
*dev
, u32 stringset
, u8
*data
)
1652 switch (stringset
) {
1654 for (i
= 0; i
< ARRAY_SIZE(mtk_ethtool_stats
); i
++) {
1655 memcpy(data
, mtk_ethtool_stats
[i
].str
, ETH_GSTRING_LEN
);
1656 data
+= ETH_GSTRING_LEN
;
1662 static int mtk_get_sset_count(struct net_device
*dev
, int sset
)
1666 return ARRAY_SIZE(mtk_ethtool_stats
);
1672 static void mtk_get_ethtool_stats(struct net_device
*dev
,
1673 struct ethtool_stats
*stats
, u64
*data
)
1675 struct mtk_mac
*mac
= netdev_priv(dev
);
1676 struct mtk_hw_stats
*hwstats
= mac
->hw_stats
;
1677 u64
*data_src
, *data_dst
;
1681 if (netif_running(dev
) && netif_device_present(dev
)) {
1682 if (spin_trylock(&hwstats
->stats_lock
)) {
1683 mtk_stats_update_mac(mac
);
1684 spin_unlock(&hwstats
->stats_lock
);
1689 data_src
= (u64
*)hwstats
;
1691 start
= u64_stats_fetch_begin_irq(&hwstats
->syncp
);
1693 for (i
= 0; i
< ARRAY_SIZE(mtk_ethtool_stats
); i
++)
1694 *data_dst
++ = *(data_src
+ mtk_ethtool_stats
[i
].offset
);
1695 } while (u64_stats_fetch_retry_irq(&hwstats
->syncp
, start
));
1698 static struct ethtool_ops mtk_ethtool_ops
= {
1699 .get_settings
= mtk_get_settings
,
1700 .set_settings
= mtk_set_settings
,
1701 .get_drvinfo
= mtk_get_drvinfo
,
1702 .get_msglevel
= mtk_get_msglevel
,
1703 .set_msglevel
= mtk_set_msglevel
,
1704 .nway_reset
= mtk_nway_reset
,
1705 .get_link
= mtk_get_link
,
1706 .get_strings
= mtk_get_strings
,
1707 .get_sset_count
= mtk_get_sset_count
,
1708 .get_ethtool_stats
= mtk_get_ethtool_stats
,
1711 static const struct net_device_ops mtk_netdev_ops
= {
1712 .ndo_init
= mtk_init
,
1713 .ndo_uninit
= mtk_uninit
,
1714 .ndo_open
= mtk_open
,
1715 .ndo_stop
= mtk_stop
,
1716 .ndo_start_xmit
= mtk_start_xmit
,
1717 .ndo_set_mac_address
= mtk_set_mac_address
,
1718 .ndo_validate_addr
= eth_validate_addr
,
1719 .ndo_do_ioctl
= mtk_do_ioctl
,
1720 .ndo_change_mtu
= eth_change_mtu
,
1721 .ndo_tx_timeout
= mtk_tx_timeout
,
1722 .ndo_get_stats64
= mtk_get_stats64
,
1723 #ifdef CONFIG_NET_POLL_CONTROLLER
1724 .ndo_poll_controller
= mtk_poll_controller
,
1728 static int mtk_add_mac(struct mtk_eth
*eth
, struct device_node
*np
)
1730 struct mtk_mac
*mac
;
1731 const __be32
*_id
= of_get_property(np
, "reg", NULL
);
1735 dev_err(eth
->dev
, "missing mac id\n");
1739 id
= be32_to_cpup(_id
);
1740 if (id
>= MTK_MAC_COUNT
) {
1741 dev_err(eth
->dev
, "%d is not a valid mac id\n", id
);
1745 if (eth
->netdev
[id
]) {
1746 dev_err(eth
->dev
, "duplicate mac id found: %d\n", id
);
1750 eth
->netdev
[id
] = alloc_etherdev(sizeof(*mac
));
1751 if (!eth
->netdev
[id
]) {
1752 dev_err(eth
->dev
, "alloc_etherdev failed\n");
1755 mac
= netdev_priv(eth
->netdev
[id
]);
1761 mac
->hw_stats
= devm_kzalloc(eth
->dev
,
1762 sizeof(*mac
->hw_stats
),
1764 if (!mac
->hw_stats
) {
1765 dev_err(eth
->dev
, "failed to allocate counter memory\n");
1769 spin_lock_init(&mac
->hw_stats
->stats_lock
);
1770 u64_stats_init(&mac
->hw_stats
->syncp
);
1771 mac
->hw_stats
->reg_offset
= id
* MTK_STAT_OFFSET
;
1773 SET_NETDEV_DEV(eth
->netdev
[id
], eth
->dev
);
1774 eth
->netdev
[id
]->watchdog_timeo
= 5 * HZ
;
1775 eth
->netdev
[id
]->netdev_ops
= &mtk_netdev_ops
;
1776 eth
->netdev
[id
]->base_addr
= (unsigned long)eth
->base
;
1777 eth
->netdev
[id
]->vlan_features
= MTK_HW_FEATURES
&
1778 ~(NETIF_F_HW_VLAN_CTAG_TX
| NETIF_F_HW_VLAN_CTAG_RX
);
1779 eth
->netdev
[id
]->features
|= MTK_HW_FEATURES
;
1780 eth
->netdev
[id
]->ethtool_ops
= &mtk_ethtool_ops
;
1782 err
= register_netdev(eth
->netdev
[id
]);
1784 dev_err(eth
->dev
, "error bringing up device\n");
1787 eth
->netdev
[id
]->irq
= eth
->irq
[0];
1788 netif_info(eth
, probe
, eth
->netdev
[id
],
1789 "mediatek frame engine at 0x%08lx, irq %d\n",
1790 eth
->netdev
[id
]->base_addr
, eth
->irq
[0]);
1795 free_netdev(eth
->netdev
[id
]);
1799 static int mtk_probe(struct platform_device
*pdev
)
1801 struct resource
*res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
1802 struct device_node
*mac_np
;
1803 const struct of_device_id
*match
;
1804 struct mtk_soc_data
*soc
;
1805 struct mtk_eth
*eth
;
1809 match
= of_match_device(of_mtk_match
, &pdev
->dev
);
1810 soc
= (struct mtk_soc_data
*)match
->data
;
1812 eth
= devm_kzalloc(&pdev
->dev
, sizeof(*eth
), GFP_KERNEL
);
1816 eth
->base
= devm_ioremap_resource(&pdev
->dev
, res
);
1817 if (IS_ERR(eth
->base
))
1818 return PTR_ERR(eth
->base
);
1820 spin_lock_init(ð
->page_lock
);
1821 spin_lock_init(ð
->irq_lock
);
1823 eth
->ethsys
= syscon_regmap_lookup_by_phandle(pdev
->dev
.of_node
,
1825 if (IS_ERR(eth
->ethsys
)) {
1826 dev_err(&pdev
->dev
, "no ethsys regmap found\n");
1827 return PTR_ERR(eth
->ethsys
);
1830 eth
->pctl
= syscon_regmap_lookup_by_phandle(pdev
->dev
.of_node
,
1832 if (IS_ERR(eth
->pctl
)) {
1833 dev_err(&pdev
->dev
, "no pctl regmap found\n");
1834 return PTR_ERR(eth
->pctl
);
1837 eth
->rstc
= devm_reset_control_get(&pdev
->dev
, "eth");
1838 if (IS_ERR(eth
->rstc
)) {
1839 dev_err(&pdev
->dev
, "no eth reset found\n");
1840 return PTR_ERR(eth
->rstc
);
1843 for (i
= 0; i
< 3; i
++) {
1844 eth
->irq
[i
] = platform_get_irq(pdev
, i
);
1845 if (eth
->irq
[i
] < 0) {
1846 dev_err(&pdev
->dev
, "no IRQ%d resource found\n", i
);
1851 eth
->clk_ethif
= devm_clk_get(&pdev
->dev
, "ethif");
1852 eth
->clk_esw
= devm_clk_get(&pdev
->dev
, "esw");
1853 eth
->clk_gp1
= devm_clk_get(&pdev
->dev
, "gp1");
1854 eth
->clk_gp2
= devm_clk_get(&pdev
->dev
, "gp2");
1855 if (IS_ERR(eth
->clk_esw
) || IS_ERR(eth
->clk_gp1
) ||
1856 IS_ERR(eth
->clk_gp2
) || IS_ERR(eth
->clk_ethif
))
1859 clk_prepare_enable(eth
->clk_ethif
);
1860 clk_prepare_enable(eth
->clk_esw
);
1861 clk_prepare_enable(eth
->clk_gp1
);
1862 clk_prepare_enable(eth
->clk_gp2
);
1864 eth
->dev
= &pdev
->dev
;
1865 eth
->msg_enable
= netif_msg_init(mtk_msg_level
, MTK_DEFAULT_MSG_ENABLE
);
1866 INIT_WORK(ð
->pending_work
, mtk_pending_work
);
1868 err
= mtk_hw_init(eth
);
1872 for_each_child_of_node(pdev
->dev
.of_node
, mac_np
) {
1873 if (!of_device_is_compatible(mac_np
,
1874 "mediatek,eth-mac"))
1877 if (!of_device_is_available(mac_np
))
1880 err
= mtk_add_mac(eth
, mac_np
);
1885 /* we run 2 devices on the same DMA ring so we need a dummy device
1888 init_dummy_netdev(ð
->dummy_dev
);
1889 netif_napi_add(ð
->dummy_dev
, ð
->tx_napi
, mtk_napi_tx
,
1891 netif_napi_add(ð
->dummy_dev
, ð
->rx_napi
, mtk_napi_rx
,
1894 platform_set_drvdata(pdev
, eth
);
1903 static int mtk_remove(struct platform_device
*pdev
)
1905 struct mtk_eth
*eth
= platform_get_drvdata(pdev
);
1907 clk_disable_unprepare(eth
->clk_ethif
);
1908 clk_disable_unprepare(eth
->clk_esw
);
1909 clk_disable_unprepare(eth
->clk_gp1
);
1910 clk_disable_unprepare(eth
->clk_gp2
);
1912 netif_napi_del(ð
->tx_napi
);
1913 netif_napi_del(ð
->rx_napi
);
1915 platform_set_drvdata(pdev
, NULL
);
1920 const struct of_device_id of_mtk_match
[] = {
1921 { .compatible
= "mediatek,mt7623-eth" },
1925 static struct platform_driver mtk_driver
= {
1927 .remove
= mtk_remove
,
1929 .name
= "mtk_soc_eth",
1930 .of_match_table
= of_mtk_match
,
1934 module_platform_driver(mtk_driver
);
1936 MODULE_LICENSE("GPL");
1937 MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
1938 MODULE_DESCRIPTION("Ethernet driver for MediaTek SoC");