2 * Atheros AR71xx built-in ethernet mac driver
4 * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
5 * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
7 * Based on Atheros' AG7100 driver
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License version 2 as published
11 * by the Free Software Foundation.
14 #include <linux/sizes.h>
15 #include <linux/of_net.h>
16 #include <linux/of_address.h>
17 #include <linux/of_platform.h>
20 #define AG71XX_DEFAULT_MSG_ENABLE \
30 static int ag71xx_msg_level = -1;
32 module_param_named(msg_level, ag71xx_msg_level, int, 0);
33 MODULE_PARM_DESC(msg_level, "Message level (-1=defaults,0=none,...,16=all)");
35 #define ETH_SWITCH_HEADER_LEN 2
37 static int ag71xx_tx_packets(struct ag71xx *ag, bool flush);
39 static inline unsigned int ag71xx_max_frame_len(unsigned int mtu)
41 return ETH_SWITCH_HEADER_LEN + ETH_HLEN + VLAN_HLEN + mtu + ETH_FCS_LEN;
44 static void ag71xx_dump_dma_regs(struct ag71xx *ag)
46 DBG("%s: dma_tx_ctrl=%08x, dma_tx_desc=%08x, dma_tx_status=%08x\n",
48 ag71xx_rr(ag, AG71XX_REG_TX_CTRL),
49 ag71xx_rr(ag, AG71XX_REG_TX_DESC),
50 ag71xx_rr(ag, AG71XX_REG_TX_STATUS));
52 DBG("%s: dma_rx_ctrl=%08x, dma_rx_desc=%08x, dma_rx_status=%08x\n",
54 ag71xx_rr(ag, AG71XX_REG_RX_CTRL),
55 ag71xx_rr(ag, AG71XX_REG_RX_DESC),
56 ag71xx_rr(ag, AG71XX_REG_RX_STATUS));
59 static void ag71xx_dump_regs(struct ag71xx *ag)
61 DBG("%s: mac_cfg1=%08x, mac_cfg2=%08x, ipg=%08x, hdx=%08x, mfl=%08x\n",
63 ag71xx_rr(ag, AG71XX_REG_MAC_CFG1),
64 ag71xx_rr(ag, AG71XX_REG_MAC_CFG2),
65 ag71xx_rr(ag, AG71XX_REG_MAC_IPG),
66 ag71xx_rr(ag, AG71XX_REG_MAC_HDX),
67 ag71xx_rr(ag, AG71XX_REG_MAC_MFL));
68 DBG("%s: mac_ifctl=%08x, mac_addr1=%08x, mac_addr2=%08x\n",
70 ag71xx_rr(ag, AG71XX_REG_MAC_IFCTL),
71 ag71xx_rr(ag, AG71XX_REG_MAC_ADDR1),
72 ag71xx_rr(ag, AG71XX_REG_MAC_ADDR2));
73 DBG("%s: fifo_cfg0=%08x, fifo_cfg1=%08x, fifo_cfg2=%08x\n",
75 ag71xx_rr(ag, AG71XX_REG_FIFO_CFG0),
76 ag71xx_rr(ag, AG71XX_REG_FIFO_CFG1),
77 ag71xx_rr(ag, AG71XX_REG_FIFO_CFG2));
78 DBG("%s: fifo_cfg3=%08x, fifo_cfg4=%08x, fifo_cfg5=%08x\n",
80 ag71xx_rr(ag, AG71XX_REG_FIFO_CFG3),
81 ag71xx_rr(ag, AG71XX_REG_FIFO_CFG4),
82 ag71xx_rr(ag, AG71XX_REG_FIFO_CFG5));
85 static inline void ag71xx_dump_intr(struct ag71xx *ag, char *label, u32 intr)
87 DBG("%s: %s intr=%08x %s%s%s%s%s%s\n",
88 ag->dev->name, label, intr,
89 (intr & AG71XX_INT_TX_PS) ? "TXPS " : "",
90 (intr & AG71XX_INT_TX_UR) ? "TXUR " : "",
91 (intr & AG71XX_INT_TX_BE) ? "TXBE " : "",
92 (intr & AG71XX_INT_RX_PR) ? "RXPR " : "",
93 (intr & AG71XX_INT_RX_OF) ? "RXOF " : "",
94 (intr & AG71XX_INT_RX_BE) ? "RXBE " : "");
97 static void ag71xx_ring_tx_clean(struct ag71xx *ag)
99 struct ag71xx_ring *ring = &ag->tx_ring;
100 struct net_device *dev = ag->dev;
101 int ring_mask = BIT(ring->order) - 1;
102 u32 bytes_compl = 0, pkts_compl = 0;
104 while (ring->curr != ring->dirty) {
105 struct ag71xx_desc *desc;
106 u32 i = ring->dirty & ring_mask;
108 desc = ag71xx_ring_desc(ring, i);
109 if (!ag71xx_desc_empty(desc)) {
111 dev->stats.tx_errors++;
114 if (ring->buf[i].skb) {
115 bytes_compl += ring->buf[i].len;
117 dev_kfree_skb_any(ring->buf[i].skb);
119 ring->buf[i].skb = NULL;
123 /* flush descriptors */
126 netdev_completed_queue(dev, pkts_compl, bytes_compl);
129 static void ag71xx_ring_tx_init(struct ag71xx *ag)
131 struct ag71xx_ring *ring = &ag->tx_ring;
132 int ring_size = BIT(ring->order);
133 int ring_mask = ring_size - 1;
136 for (i = 0; i < ring_size; i++) {
137 struct ag71xx_desc *desc = ag71xx_ring_desc(ring, i);
139 desc->next = (u32) (ring->descs_dma +
140 AG71XX_DESC_SIZE * ((i + 1) & ring_mask));
142 desc->ctrl = DESC_EMPTY;
143 ring->buf[i].skb = NULL;
146 /* flush descriptors */
151 netdev_reset_queue(ag->dev);
154 static void ag71xx_ring_rx_clean(struct ag71xx *ag)
156 struct ag71xx_ring *ring = &ag->rx_ring;
157 int ring_size = BIT(ring->order);
163 for (i = 0; i < ring_size; i++)
164 if (ring->buf[i].rx_buf) {
165 dma_unmap_single(&ag->pdev->dev, ring->buf[i].dma_addr,
166 ag->rx_buf_size, DMA_FROM_DEVICE);
167 skb_free_frag(ring->buf[i].rx_buf);
171 static int ag71xx_buffer_size(struct ag71xx *ag)
173 return ag->rx_buf_size +
174 SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
177 static bool ag71xx_fill_rx_buf(struct ag71xx *ag, struct ag71xx_buf *buf,
179 void *(*alloc)(unsigned int size))
181 struct ag71xx_ring *ring = &ag->rx_ring;
182 struct ag71xx_desc *desc = ag71xx_ring_desc(ring, buf - &ring->buf[0]);
185 data = alloc(ag71xx_buffer_size(ag));
190 buf->dma_addr = dma_map_single(&ag->pdev->dev, data, ag->rx_buf_size,
192 desc->data = (u32) buf->dma_addr + offset;
196 static int ag71xx_ring_rx_init(struct ag71xx *ag)
198 struct ag71xx_ring *ring = &ag->rx_ring;
199 int ring_size = BIT(ring->order);
200 int ring_mask = BIT(ring->order) - 1;
205 for (i = 0; i < ring_size; i++) {
206 struct ag71xx_desc *desc = ag71xx_ring_desc(ring, i);
208 desc->next = (u32) (ring->descs_dma +
209 AG71XX_DESC_SIZE * ((i + 1) & ring_mask));
211 DBG("ag71xx: RX desc at %p, next is %08x\n",
215 for (i = 0; i < ring_size; i++) {
216 struct ag71xx_desc *desc = ag71xx_ring_desc(ring, i);
218 if (!ag71xx_fill_rx_buf(ag, &ring->buf[i], ag->rx_buf_offset,
219 netdev_alloc_frag)) {
224 desc->ctrl = DESC_EMPTY;
227 /* flush descriptors */
236 static int ag71xx_ring_rx_refill(struct ag71xx *ag)
238 struct ag71xx_ring *ring = &ag->rx_ring;
239 int ring_mask = BIT(ring->order) - 1;
241 int offset = ag->rx_buf_offset;
244 for (; ring->curr - ring->dirty > 0; ring->dirty++) {
245 struct ag71xx_desc *desc;
248 i = ring->dirty & ring_mask;
249 desc = ag71xx_ring_desc(ring, i);
251 if (!ring->buf[i].rx_buf &&
252 !ag71xx_fill_rx_buf(ag, &ring->buf[i], offset,
256 desc->ctrl = DESC_EMPTY;
260 /* flush descriptors */
263 DBG("%s: %u rx descriptors refilled\n", ag->dev->name, count);
268 static int ag71xx_rings_init(struct ag71xx *ag)
270 struct ag71xx_ring *tx = &ag->tx_ring;
271 struct ag71xx_ring *rx = &ag->rx_ring;
272 int ring_size = BIT(tx->order) + BIT(rx->order);
273 int tx_size = BIT(tx->order);
275 tx->buf = kzalloc(ring_size * sizeof(*tx->buf), GFP_KERNEL);
279 tx->descs_cpu = dma_alloc_coherent(&ag->pdev->dev, ring_size * AG71XX_DESC_SIZE,
280 &tx->descs_dma, GFP_ATOMIC);
281 if (!tx->descs_cpu) {
287 rx->buf = &tx->buf[BIT(tx->order)];
288 rx->descs_cpu = ((void *)tx->descs_cpu) + tx_size * AG71XX_DESC_SIZE;
289 rx->descs_dma = tx->descs_dma + tx_size * AG71XX_DESC_SIZE;
291 ag71xx_ring_tx_init(ag);
292 return ag71xx_ring_rx_init(ag);
295 static void ag71xx_rings_free(struct ag71xx *ag)
297 struct ag71xx_ring *tx = &ag->tx_ring;
298 struct ag71xx_ring *rx = &ag->rx_ring;
299 int ring_size = BIT(tx->order) + BIT(rx->order);
302 dma_free_coherent(&ag->pdev->dev, ring_size * AG71XX_DESC_SIZE,
303 tx->descs_cpu, tx->descs_dma);
307 tx->descs_cpu = NULL;
308 rx->descs_cpu = NULL;
313 static void ag71xx_rings_cleanup(struct ag71xx *ag)
315 ag71xx_ring_rx_clean(ag);
316 ag71xx_ring_tx_clean(ag);
317 ag71xx_rings_free(ag);
319 netdev_reset_queue(ag->dev);
322 static unsigned char *ag71xx_speed_str(struct ag71xx *ag)
336 static void ag71xx_hw_set_macaddr(struct ag71xx *ag, unsigned char *mac)
340 t = (((u32) mac[5]) << 24) | (((u32) mac[4]) << 16)
341 | (((u32) mac[3]) << 8) | ((u32) mac[2]);
343 ag71xx_wr(ag, AG71XX_REG_MAC_ADDR1, t);
345 t = (((u32) mac[1]) << 24) | (((u32) mac[0]) << 16);
346 ag71xx_wr(ag, AG71XX_REG_MAC_ADDR2, t);
349 static void ag71xx_dma_reset(struct ag71xx *ag)
354 ag71xx_dump_dma_regs(ag);
357 ag71xx_wr(ag, AG71XX_REG_RX_CTRL, 0);
358 ag71xx_wr(ag, AG71XX_REG_TX_CTRL, 0);
361 * give the hardware some time to really stop all rx/tx activity
362 * clearing the descriptors too early causes random memory corruption
366 /* clear descriptor addresses */
367 ag71xx_wr(ag, AG71XX_REG_TX_DESC, ag->stop_desc_dma);
368 ag71xx_wr(ag, AG71XX_REG_RX_DESC, ag->stop_desc_dma);
370 /* clear pending RX/TX interrupts */
371 for (i = 0; i < 256; i++) {
372 ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR);
373 ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_PS);
376 /* clear pending errors */
377 ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_BE | RX_STATUS_OF);
378 ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_BE | TX_STATUS_UR);
380 val = ag71xx_rr(ag, AG71XX_REG_RX_STATUS);
382 pr_alert("%s: unable to clear DMA Rx status: %08x\n",
385 val = ag71xx_rr(ag, AG71XX_REG_TX_STATUS);
387 /* mask out reserved bits */
391 pr_alert("%s: unable to clear DMA Tx status: %08x\n",
394 ag71xx_dump_dma_regs(ag);
397 #define MAC_CFG1_INIT (MAC_CFG1_RXE | MAC_CFG1_TXE | \
398 MAC_CFG1_SRX | MAC_CFG1_STX)
400 #define FIFO_CFG0_INIT (FIFO_CFG0_ALL << FIFO_CFG0_ENABLE_SHIFT)
402 #define FIFO_CFG4_INIT (FIFO_CFG4_DE | FIFO_CFG4_DV | FIFO_CFG4_FC | \
403 FIFO_CFG4_CE | FIFO_CFG4_CR | FIFO_CFG4_LM | \
404 FIFO_CFG4_LO | FIFO_CFG4_OK | FIFO_CFG4_MC | \
405 FIFO_CFG4_BC | FIFO_CFG4_DR | FIFO_CFG4_LE | \
406 FIFO_CFG4_CF | FIFO_CFG4_PF | FIFO_CFG4_UO | \
409 #define FIFO_CFG5_INIT (FIFO_CFG5_DE | FIFO_CFG5_DV | FIFO_CFG5_FC | \
410 FIFO_CFG5_CE | FIFO_CFG5_LO | FIFO_CFG5_OK | \
411 FIFO_CFG5_MC | FIFO_CFG5_BC | FIFO_CFG5_DR | \
412 FIFO_CFG5_CF | FIFO_CFG5_PF | FIFO_CFG5_VT | \
413 FIFO_CFG5_LE | FIFO_CFG5_FT | FIFO_CFG5_16 | \
414 FIFO_CFG5_17 | FIFO_CFG5_SF)
416 static void ag71xx_hw_stop(struct ag71xx *ag)
418 /* disable all interrupts and stop the rx/tx engine */
419 ag71xx_wr(ag, AG71XX_REG_INT_ENABLE, 0);
420 ag71xx_wr(ag, AG71XX_REG_RX_CTRL, 0);
421 ag71xx_wr(ag, AG71XX_REG_TX_CTRL, 0);
424 static void ag71xx_hw_setup(struct ag71xx *ag)
426 struct device_node *np = ag->pdev->dev.of_node;
427 u32 init = MAC_CFG1_INIT;
429 /* setup MAC configuration registers */
430 if (of_property_read_bool(np, "flow-control"))
431 init |= MAC_CFG1_TFC | MAC_CFG1_RFC;
432 ag71xx_wr(ag, AG71XX_REG_MAC_CFG1, init);
434 ag71xx_sb(ag, AG71XX_REG_MAC_CFG2,
435 MAC_CFG2_PAD_CRC_EN | MAC_CFG2_LEN_CHECK);
437 /* setup max frame length to zero */
438 ag71xx_wr(ag, AG71XX_REG_MAC_MFL, 0);
440 /* setup FIFO configuration registers */
441 ag71xx_wr(ag, AG71XX_REG_FIFO_CFG0, FIFO_CFG0_INIT);
442 ag71xx_wr(ag, AG71XX_REG_FIFO_CFG1, ag->fifodata[0]);
443 ag71xx_wr(ag, AG71XX_REG_FIFO_CFG2, ag->fifodata[1]);
444 ag71xx_wr(ag, AG71XX_REG_FIFO_CFG4, FIFO_CFG4_INIT);
445 ag71xx_wr(ag, AG71XX_REG_FIFO_CFG5, FIFO_CFG5_INIT);
448 static void ag71xx_hw_init(struct ag71xx *ag)
452 ag71xx_sb(ag, AG71XX_REG_MAC_CFG1, MAC_CFG1_SR);
455 reset_control_assert(ag->mac_reset);
457 reset_control_assert(ag->mdio_reset);
459 reset_control_deassert(ag->mac_reset);
461 reset_control_deassert(ag->mdio_reset);
466 ag71xx_dma_reset(ag);
469 static void ag71xx_fast_reset(struct ag71xx *ag)
471 struct net_device *dev = ag->dev;
478 mii_reg = ag71xx_rr(ag, AG71XX_REG_MII_CFG);
479 rx_ds = ag71xx_rr(ag, AG71XX_REG_RX_DESC);
481 ag71xx_tx_packets(ag, true);
483 reset_control_assert(ag->mac_reset);
485 reset_control_deassert(ag->mac_reset);
488 ag71xx_dma_reset(ag);
490 ag->tx_ring.curr = 0;
491 ag->tx_ring.dirty = 0;
492 netdev_reset_queue(ag->dev);
494 /* setup max frame length */
495 ag71xx_wr(ag, AG71XX_REG_MAC_MFL,
496 ag71xx_max_frame_len(ag->dev->mtu));
498 ag71xx_wr(ag, AG71XX_REG_RX_DESC, rx_ds);
499 ag71xx_wr(ag, AG71XX_REG_TX_DESC, ag->tx_ring.descs_dma);
500 ag71xx_wr(ag, AG71XX_REG_MII_CFG, mii_reg);
502 ag71xx_hw_set_macaddr(ag, dev->dev_addr);
505 static void ag71xx_hw_start(struct ag71xx *ag)
507 /* start RX engine */
508 ag71xx_wr(ag, AG71XX_REG_RX_CTRL, RX_CTRL_RXE);
510 /* enable interrupts */
511 ag71xx_wr(ag, AG71XX_REG_INT_ENABLE, AG71XX_INT_INIT);
513 netif_wake_queue(ag->dev);
516 static void ath79_set_pllval(struct ag71xx *ag)
518 u32 pll_reg = ag->pllreg[1];
526 pll_val = ag->plldata[2];
529 pll_val = ag->plldata[1];
532 pll_val = ag->plldata[0];
539 regmap_write(ag->pllregmap, pll_reg, pll_val);
542 static void ath79_set_pll(struct ag71xx *ag)
544 u32 pll_cfg = ag->pllreg[0];
545 u32 pll_shift = ag->pllreg[2];
550 regmap_update_bits(ag->pllregmap, pll_cfg, 3 << pll_shift, 2 << pll_shift);
553 ath79_set_pllval(ag);
555 regmap_update_bits(ag->pllregmap, pll_cfg, 3 << pll_shift, 3 << pll_shift);
558 regmap_update_bits(ag->pllregmap, pll_cfg, 3 << pll_shift, 0);
562 static void ath79_mii_ctrl_set_if(struct ag71xx *ag, unsigned int mii_if)
566 t = __raw_readl(ag->mii_base);
567 t &= ~(AR71XX_MII_CTRL_IF_MASK);
568 t |= (mii_if & AR71XX_MII_CTRL_IF_MASK);
569 __raw_writel(t, ag->mii_base);
572 static void ath79_mii0_ctrl_set_if(struct ag71xx *ag)
576 switch (ag->phy_if_mode) {
577 case PHY_INTERFACE_MODE_MII:
578 mii_if = AR71XX_MII0_CTRL_IF_MII;
580 case PHY_INTERFACE_MODE_GMII:
581 mii_if = AR71XX_MII0_CTRL_IF_GMII;
583 case PHY_INTERFACE_MODE_RGMII:
584 mii_if = AR71XX_MII0_CTRL_IF_RGMII;
586 case PHY_INTERFACE_MODE_RMII:
587 mii_if = AR71XX_MII0_CTRL_IF_RMII;
590 WARN(1, "Impossible PHY mode defined.\n");
594 ath79_mii_ctrl_set_if(ag, mii_if);
597 static void ath79_mii1_ctrl_set_if(struct ag71xx *ag)
601 switch (ag->phy_if_mode) {
602 case PHY_INTERFACE_MODE_RMII:
603 mii_if = AR71XX_MII1_CTRL_IF_RMII;
605 case PHY_INTERFACE_MODE_RGMII:
606 mii_if = AR71XX_MII1_CTRL_IF_RGMII;
609 WARN(1, "Impossible PHY mode defined.\n");
613 ath79_mii_ctrl_set_if(ag, mii_if);
616 static void ath79_mii_ctrl_set_speed(struct ag71xx *ag)
618 unsigned int mii_speed;
626 mii_speed = AR71XX_MII_CTRL_SPEED_10;
629 mii_speed = AR71XX_MII_CTRL_SPEED_100;
632 mii_speed = AR71XX_MII_CTRL_SPEED_1000;
638 t = __raw_readl(ag->mii_base);
639 t &= ~(AR71XX_MII_CTRL_SPEED_MASK << AR71XX_MII_CTRL_SPEED_SHIFT);
640 t |= mii_speed << AR71XX_MII_CTRL_SPEED_SHIFT;
641 __raw_writel(t, ag->mii_base);
645 __ag71xx_link_adjust(struct ag71xx *ag, bool update)
647 struct device_node *np = ag->pdev->dev.of_node;
652 if (!ag->link && update) {
654 netif_carrier_off(ag->dev);
655 if (netif_msg_link(ag))
656 pr_info("%s: link down\n", ag->dev->name);
660 if (!of_device_is_compatible(np, "qca,ar9130-eth") &&
661 !of_device_is_compatible(np, "qca,ar7100-eth"))
662 ag71xx_fast_reset(ag);
664 cfg2 = ag71xx_rr(ag, AG71XX_REG_MAC_CFG2);
665 cfg2 &= ~(MAC_CFG2_IF_1000 | MAC_CFG2_IF_10_100 | MAC_CFG2_FDX);
666 cfg2 |= (ag->duplex) ? MAC_CFG2_FDX : 0;
668 ifctl = ag71xx_rr(ag, AG71XX_REG_MAC_IFCTL);
669 ifctl &= ~(MAC_IFCTL_SPEED);
671 fifo5 = ag71xx_rr(ag, AG71XX_REG_FIFO_CFG5);
672 fifo5 &= ~FIFO_CFG5_BM;
676 cfg2 |= MAC_CFG2_IF_1000;
677 fifo5 |= FIFO_CFG5_BM;
680 cfg2 |= MAC_CFG2_IF_10_100;
681 ifctl |= MAC_IFCTL_SPEED;
684 cfg2 |= MAC_CFG2_IF_10_100;
691 if (ag->tx_ring.desc_split) {
692 ag->fifodata[2] &= 0xffff;
693 ag->fifodata[2] |= ((2048 - ag->tx_ring.desc_split) / 4) << 16;
696 ag71xx_wr(ag, AG71XX_REG_FIFO_CFG3, ag->fifodata[2]);
699 if (of_device_is_compatible(np, "qca,ar7100-eth") ||
700 of_device_is_compatible(np, "qca,ar9130-eth")) {
702 ath79_mii_ctrl_set_speed(ag);
703 } else if (of_device_is_compatible(np, "qca,ar7242-eth") ||
704 of_device_is_compatible(np, "qca,ar9340-eth") ||
705 of_device_is_compatible(np, "qca,qca9550-eth") ||
706 of_device_is_compatible(np, "qca,qca9560-eth")) {
707 ath79_set_pllval(ag);
711 ag71xx_wr(ag, AG71XX_REG_MAC_CFG2, cfg2);
712 ag71xx_wr(ag, AG71XX_REG_FIFO_CFG5, fifo5);
713 ag71xx_wr(ag, AG71XX_REG_MAC_IFCTL, ifctl);
715 if (of_device_is_compatible(np, "qca,qca9530-eth") ||
716 of_device_is_compatible(np, "qca,qca9560-eth")) {
718 * The rx ring buffer can stall on small packets on QCA953x and
719 * QCA956x. Disabling the inline checksum engine fixes the stall.
720 * The wr, rr functions cannot be used since this hidden register
721 * is outside of the normal ag71xx register block.
723 void __iomem *dam = ioremap_nocache(0xb90001bc, 0x4);
725 __raw_writel(__raw_readl(dam) & ~BIT(27), dam);
726 (void)__raw_readl(dam);
733 netif_carrier_on(ag->dev);
734 if (update && netif_msg_link(ag))
735 pr_info("%s: link up (%sMbps/%s duplex)\n",
737 ag71xx_speed_str(ag),
738 (DUPLEX_FULL == ag->duplex) ? "Full" : "Half");
740 ag71xx_dump_regs(ag);
743 void ag71xx_link_adjust(struct ag71xx *ag)
745 __ag71xx_link_adjust(ag, true);
748 static int ag71xx_hw_enable(struct ag71xx *ag)
752 ret = ag71xx_rings_init(ag);
756 napi_enable(&ag->napi);
757 ag71xx_wr(ag, AG71XX_REG_TX_DESC, ag->tx_ring.descs_dma);
758 ag71xx_wr(ag, AG71XX_REG_RX_DESC, ag->rx_ring.descs_dma);
759 netif_start_queue(ag->dev);
764 static void ag71xx_hw_disable(struct ag71xx *ag)
768 spin_lock_irqsave(&ag->lock, flags);
770 netif_stop_queue(ag->dev);
773 ag71xx_dma_reset(ag);
775 napi_disable(&ag->napi);
776 del_timer_sync(&ag->oom_timer);
778 spin_unlock_irqrestore(&ag->lock, flags);
780 ag71xx_rings_cleanup(ag);
783 static int ag71xx_open(struct net_device *dev)
785 struct ag71xx *ag = netdev_priv(dev);
786 unsigned int max_frame_len;
789 netif_carrier_off(dev);
790 max_frame_len = ag71xx_max_frame_len(dev->mtu);
791 ag->rx_buf_size = SKB_DATA_ALIGN(max_frame_len + NET_SKB_PAD + NET_IP_ALIGN);
793 /* setup max frame length */
794 ag71xx_wr(ag, AG71XX_REG_MAC_MFL, max_frame_len);
795 ag71xx_hw_set_macaddr(ag, dev->dev_addr);
797 ret = ag71xx_hw_enable(ag);
801 phy_start(ag->phy_dev);
806 ag71xx_rings_cleanup(ag);
810 static int ag71xx_stop(struct net_device *dev)
813 struct ag71xx *ag = netdev_priv(dev);
815 netif_carrier_off(dev);
816 phy_stop(ag->phy_dev);
818 spin_lock_irqsave(&ag->lock, flags);
821 ag71xx_link_adjust(ag);
823 spin_unlock_irqrestore(&ag->lock, flags);
825 ag71xx_hw_disable(ag);
830 static int ag71xx_fill_dma_desc(struct ag71xx_ring *ring, u32 addr, int len)
833 struct ag71xx_desc *desc;
834 int ring_mask = BIT(ring->order) - 1;
836 int split = ring->desc_split;
842 unsigned int cur_len = len;
844 i = (ring->curr + ndesc) & ring_mask;
845 desc = ag71xx_ring_desc(ring, i);
847 if (!ag71xx_desc_empty(desc))
850 if (cur_len > split) {
854 * TX will hang if DMA transfers <= 4 bytes,
855 * make sure next segment is more than 4 bytes long.
857 if (len <= split + 4)
866 cur_len |= DESC_MORE;
868 /* prevent early tx attempt of this descriptor */
870 cur_len |= DESC_EMPTY;
872 desc->ctrl = cur_len;
879 static netdev_tx_t ag71xx_hard_start_xmit(struct sk_buff *skb,
880 struct net_device *dev)
882 struct ag71xx *ag = netdev_priv(dev);
883 struct ag71xx_ring *ring = &ag->tx_ring;
884 int ring_mask = BIT(ring->order) - 1;
885 int ring_size = BIT(ring->order);
886 struct ag71xx_desc *desc;
891 DBG("%s: packet len is too small\n", ag->dev->name);
895 dma_addr = dma_map_single(&ag->pdev->dev, skb->data, skb->len,
898 i = ring->curr & ring_mask;
899 desc = ag71xx_ring_desc(ring, i);
901 /* setup descriptor fields */
902 n = ag71xx_fill_dma_desc(ring, (u32) dma_addr, skb->len & ag->desc_pktlen_mask);
906 i = (ring->curr + n - 1) & ring_mask;
907 ring->buf[i].len = skb->len;
908 ring->buf[i].skb = skb;
910 netdev_sent_queue(dev, skb->len);
912 skb_tx_timestamp(skb);
914 desc->ctrl &= ~DESC_EMPTY;
917 /* flush descriptor */
921 if (ring->desc_split)
922 ring_min *= AG71XX_TX_RING_DS_PER_PKT;
924 if (ring->curr - ring->dirty >= ring_size - ring_min) {
925 DBG("%s: tx queue full\n", dev->name);
926 netif_stop_queue(dev);
929 DBG("%s: packet injected into TX queue\n", ag->dev->name);
931 /* enable TX engine */
932 ag71xx_wr(ag, AG71XX_REG_TX_CTRL, TX_CTRL_TXE);
937 dma_unmap_single(&ag->pdev->dev, dma_addr, skb->len, DMA_TO_DEVICE);
940 dev->stats.tx_dropped++;
946 static int ag71xx_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
948 struct ag71xx *ag = netdev_priv(dev);
953 if (ag->phy_dev == NULL)
956 spin_lock_irq(&ag->lock);
957 ret = phy_ethtool_ioctl(ag->phy_dev, (void *) ifr->ifr_data);
958 spin_unlock_irq(&ag->lock);
963 (dev->dev_addr, ifr->ifr_data, sizeof(dev->dev_addr)))
969 (ifr->ifr_data, dev->dev_addr, sizeof(dev->dev_addr)))
976 if (ag->phy_dev == NULL)
979 return phy_mii_ioctl(ag->phy_dev, ifr, cmd);
988 #if (LINUX_VERSION_CODE < KERNEL_VERSION(4,15,0))
989 static void ag71xx_oom_timer_handler(unsigned long data)
991 struct net_device *dev = (struct net_device *) data;
992 struct ag71xx *ag = netdev_priv(dev);
994 static void ag71xx_oom_timer_handler(struct timer_list *t)
996 struct ag71xx *ag = from_timer(ag, t, oom_timer);
999 napi_schedule(&ag->napi);
1002 static void ag71xx_tx_timeout(struct net_device *dev)
1004 struct ag71xx *ag = netdev_priv(dev);
1006 if (netif_msg_tx_err(ag))
1007 pr_info("%s: tx timeout\n", ag->dev->name);
1009 schedule_delayed_work(&ag->restart_work, 1);
1012 static void ag71xx_restart_work_func(struct work_struct *work)
1014 struct ag71xx *ag = container_of(work, struct ag71xx, restart_work.work);
1017 ag71xx_hw_disable(ag);
1018 ag71xx_hw_enable(ag);
1020 __ag71xx_link_adjust(ag, false);
1024 static bool ag71xx_check_dma_stuck(struct ag71xx *ag)
1026 unsigned long timestamp;
1027 u32 rx_sm, tx_sm, rx_fd;
1029 timestamp = netdev_get_tx_queue(ag->dev, 0)->trans_start;
1030 if (likely(time_before(jiffies, timestamp + HZ/10)))
1033 if (!netif_carrier_ok(ag->dev))
1036 rx_sm = ag71xx_rr(ag, AG71XX_REG_RX_SM);
1037 if ((rx_sm & 0x7) == 0x3 && ((rx_sm >> 4) & 0x7) == 0x6)
1040 tx_sm = ag71xx_rr(ag, AG71XX_REG_TX_SM);
1041 rx_fd = ag71xx_rr(ag, AG71XX_REG_FIFO_DEPTH);
1042 if (((tx_sm >> 4) & 0x7) == 0 && ((rx_sm & 0x7) == 0) &&
1043 ((rx_sm >> 4) & 0x7) == 0 && rx_fd == 0)
1049 static int ag71xx_tx_packets(struct ag71xx *ag, bool flush)
1051 struct ag71xx_ring *ring = &ag->tx_ring;
1052 bool dma_stuck = false;
1053 int ring_mask = BIT(ring->order) - 1;
1054 int ring_size = BIT(ring->order);
1056 int bytes_compl = 0;
1059 DBG("%s: processing TX ring\n", ag->dev->name);
1061 while (ring->dirty + n != ring->curr) {
1062 unsigned int i = (ring->dirty + n) & ring_mask;
1063 struct ag71xx_desc *desc = ag71xx_ring_desc(ring, i);
1064 struct sk_buff *skb = ring->buf[i].skb;
1066 if (!flush && !ag71xx_desc_empty(desc)) {
1067 if (ag->tx_hang_workaround &&
1068 ag71xx_check_dma_stuck(ag)) {
1069 schedule_delayed_work(&ag->restart_work, HZ / 2);
1076 desc->ctrl |= DESC_EMPTY;
1082 dev_kfree_skb_any(skb);
1083 ring->buf[i].skb = NULL;
1085 bytes_compl += ring->buf[i].len;
1091 ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_PS);
1096 DBG("%s: %d packets sent out\n", ag->dev->name, sent);
1101 ag->dev->stats.tx_bytes += bytes_compl;
1102 ag->dev->stats.tx_packets += sent;
1104 netdev_completed_queue(ag->dev, sent, bytes_compl);
1105 if ((ring->curr - ring->dirty) < (ring_size * 3) / 4)
1106 netif_wake_queue(ag->dev);
1109 cancel_delayed_work(&ag->restart_work);
1114 static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
1116 struct net_device *dev = ag->dev;
1117 struct ag71xx_ring *ring = &ag->rx_ring;
1118 unsigned int pktlen_mask = ag->desc_pktlen_mask;
1119 unsigned int offset = ag->rx_buf_offset;
1120 int ring_mask = BIT(ring->order) - 1;
1121 int ring_size = BIT(ring->order);
1122 struct sk_buff_head queue;
1123 struct sk_buff *skb;
1126 DBG("%s: rx packets, limit=%d, curr=%u, dirty=%u\n",
1127 dev->name, limit, ring->curr, ring->dirty);
1129 skb_queue_head_init(&queue);
1131 while (done < limit) {
1132 unsigned int i = ring->curr & ring_mask;
1133 struct ag71xx_desc *desc = ag71xx_ring_desc(ring, i);
1137 if (ag71xx_desc_empty(desc))
1140 if ((ring->dirty + ring_size) == ring->curr) {
1145 ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR);
1147 pktlen = desc->ctrl & pktlen_mask;
1148 pktlen -= ETH_FCS_LEN;
1150 dma_unmap_single(&ag->pdev->dev, ring->buf[i].dma_addr,
1151 ag->rx_buf_size, DMA_FROM_DEVICE);
1153 dev->stats.rx_packets++;
1154 dev->stats.rx_bytes += pktlen;
1156 skb = build_skb(ring->buf[i].rx_buf, ag71xx_buffer_size(ag));
1158 skb_free_frag(ring->buf[i].rx_buf);
1162 skb_reserve(skb, offset);
1163 skb_put(skb, pktlen);
1166 dev->stats.rx_dropped++;
1170 skb->ip_summed = CHECKSUM_NONE;
1171 __skb_queue_tail(&queue, skb);
1175 ring->buf[i].rx_buf = NULL;
1181 ag71xx_ring_rx_refill(ag);
1183 while ((skb = __skb_dequeue(&queue)) != NULL) {
1184 skb->protocol = eth_type_trans(skb, dev);
1185 netif_receive_skb(skb);
1188 DBG("%s: rx finish, curr=%u, dirty=%u, done=%d\n",
1189 dev->name, ring->curr, ring->dirty, done);
1194 static int ag71xx_poll(struct napi_struct *napi, int limit)
1196 struct ag71xx *ag = container_of(napi, struct ag71xx, napi);
1197 struct net_device *dev = ag->dev;
1198 struct ag71xx_ring *rx_ring = &ag->rx_ring;
1199 int rx_ring_size = BIT(rx_ring->order);
1200 unsigned long flags;
1205 tx_done = ag71xx_tx_packets(ag, false);
1207 DBG("%s: processing RX ring\n", dev->name);
1208 rx_done = ag71xx_rx_packets(ag, limit);
1210 ag71xx_debugfs_update_napi_stats(ag, rx_done, tx_done);
1212 if (rx_ring->buf[rx_ring->dirty % rx_ring_size].rx_buf == NULL)
1215 status = ag71xx_rr(ag, AG71XX_REG_RX_STATUS);
1216 if (unlikely(status & RX_STATUS_OF)) {
1217 ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_OF);
1218 dev->stats.rx_fifo_errors++;
1221 ag71xx_wr(ag, AG71XX_REG_RX_CTRL, RX_CTRL_RXE);
1224 if (rx_done < limit) {
1225 if (status & RX_STATUS_PR)
1228 status = ag71xx_rr(ag, AG71XX_REG_TX_STATUS);
1229 if (status & TX_STATUS_PS)
1232 DBG("%s: disable polling mode, rx=%d, tx=%d,limit=%d\n",
1233 dev->name, rx_done, tx_done, limit);
1235 napi_complete(napi);
1237 /* enable interrupts */
1238 spin_lock_irqsave(&ag->lock, flags);
1239 ag71xx_int_enable(ag, AG71XX_INT_POLL);
1240 spin_unlock_irqrestore(&ag->lock, flags);
1245 DBG("%s: stay in polling mode, rx=%d, tx=%d, limit=%d\n",
1246 dev->name, rx_done, tx_done, limit);
1250 if (netif_msg_rx_err(ag))
1251 pr_info("%s: out of memory\n", dev->name);
1253 mod_timer(&ag->oom_timer, jiffies + AG71XX_OOM_REFILL);
1254 napi_complete(napi);
1258 static irqreturn_t ag71xx_interrupt(int irq, void *dev_id)
1260 struct net_device *dev = dev_id;
1261 struct ag71xx *ag = netdev_priv(dev);
1264 status = ag71xx_rr(ag, AG71XX_REG_INT_STATUS);
1265 ag71xx_dump_intr(ag, "raw", status);
1267 if (unlikely(!status))
1270 if (unlikely(status & AG71XX_INT_ERR)) {
1271 if (status & AG71XX_INT_TX_BE) {
1272 ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_BE);
1273 dev_err(&dev->dev, "TX BUS error\n");
1275 if (status & AG71XX_INT_RX_BE) {
1276 ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_BE);
1277 dev_err(&dev->dev, "RX BUS error\n");
1281 if (likely(status & AG71XX_INT_POLL)) {
1282 ag71xx_int_disable(ag, AG71XX_INT_POLL);
1283 DBG("%s: enable polling mode\n", dev->name);
1284 napi_schedule(&ag->napi);
1287 ag71xx_debugfs_update_int_stats(ag, status);
1292 static int ag71xx_change_mtu(struct net_device *dev, int new_mtu)
1294 struct ag71xx *ag = netdev_priv(dev);
1297 ag71xx_wr(ag, AG71XX_REG_MAC_MFL,
1298 ag71xx_max_frame_len(dev->mtu));
1303 static const struct net_device_ops ag71xx_netdev_ops = {
1304 .ndo_open = ag71xx_open,
1305 .ndo_stop = ag71xx_stop,
1306 .ndo_start_xmit = ag71xx_hard_start_xmit,
1307 .ndo_do_ioctl = ag71xx_do_ioctl,
1308 .ndo_tx_timeout = ag71xx_tx_timeout,
1309 .ndo_change_mtu = ag71xx_change_mtu,
1310 .ndo_set_mac_address = eth_mac_addr,
1311 .ndo_validate_addr = eth_validate_addr,
1314 static int ag71xx_probe(struct platform_device *pdev)
1316 struct device_node *np = pdev->dev.of_node;
1317 struct net_device *dev;
1318 struct resource *res;
1320 const void *mac_addr;
1327 dev = devm_alloc_etherdev(&pdev->dev, sizeof(*ag));
1331 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1335 err = ag71xx_setup_gmac(np);
1339 SET_NETDEV_DEV(dev, &pdev->dev);
1341 ag = netdev_priv(dev);
1344 ag->msg_enable = netif_msg_init(ag71xx_msg_level,
1345 AG71XX_DEFAULT_MSG_ENABLE);
1346 spin_lock_init(&ag->lock);
1348 ag->mac_reset = devm_reset_control_get_exclusive(&pdev->dev, "mac");
1349 if (IS_ERR(ag->mac_reset)) {
1350 dev_err(&pdev->dev, "missing mac reset\n");
1351 return PTR_ERR(ag->mac_reset);
1354 ag->mdio_reset = devm_reset_control_get_optional_exclusive(&pdev->dev, "mdio");
1356 if (of_property_read_u32_array(np, "fifo-data", ag->fifodata, 3)) {
1357 if (of_device_is_compatible(np, "qca,ar9130-eth") ||
1358 of_device_is_compatible(np, "qca,ar7100-eth")) {
1359 ag->fifodata[0] = 0x0fff0000;
1360 ag->fifodata[1] = 0x00001fff;
1362 ag->fifodata[0] = 0x0010ffff;
1363 ag->fifodata[1] = 0x015500aa;
1364 ag->fifodata[2] = 0x01f00140;
1366 if (of_device_is_compatible(np, "qca,ar9130-eth"))
1367 ag->fifodata[2] = 0x00780fff;
1368 else if (of_device_is_compatible(np, "qca,ar7100-eth"))
1369 ag->fifodata[2] = 0x008001ff;
1372 if (of_property_read_u32_array(np, "pll-data", ag->plldata, 3))
1373 dev_dbg(&pdev->dev, "failed to read pll-data property\n");
1375 if (of_property_read_u32_array(np, "pll-reg", ag->pllreg, 3))
1376 dev_dbg(&pdev->dev, "failed to read pll-reg property\n");
1378 ag->pllregmap = syscon_regmap_lookup_by_phandle(np, "pll-handle");
1379 if (IS_ERR(ag->pllregmap)) {
1380 dev_dbg(&pdev->dev, "failed to read pll-handle property\n");
1381 ag->pllregmap = NULL;
1384 ag->mac_base = devm_ioremap_nocache(&pdev->dev, res->start,
1385 res->end - res->start + 1);
1389 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
1391 ag->mii_base = devm_ioremap_nocache(&pdev->dev, res->start,
1392 res->end - res->start + 1);
1397 dev->irq = platform_get_irq(pdev, 0);
1398 err = devm_request_irq(&pdev->dev, dev->irq, ag71xx_interrupt,
1399 0x0, dev_name(&pdev->dev), dev);
1401 dev_err(&pdev->dev, "unable to request IRQ %d\n", dev->irq);
1405 dev->netdev_ops = &ag71xx_netdev_ops;
1406 dev->ethtool_ops = &ag71xx_ethtool_ops;
1408 INIT_DELAYED_WORK(&ag->restart_work, ag71xx_restart_work_func);
1410 #if (LINUX_VERSION_CODE < KERNEL_VERSION(4,15,0))
1411 init_timer(&ag->oom_timer);
1412 ag->oom_timer.data = (unsigned long) dev;
1413 ag->oom_timer.function = ag71xx_oom_timer_handler;
1415 timer_setup(&ag->oom_timer, ag71xx_oom_timer_handler, 0);
1418 tx_size = AG71XX_TX_RING_SIZE_DEFAULT;
1419 ag->rx_ring.order = ag71xx_ring_size_order(AG71XX_RX_RING_SIZE_DEFAULT);
1421 if (of_device_is_compatible(np, "qca,ar9340-eth") ||
1422 of_device_is_compatible(np, "qca,qca9530-eth") ||
1423 of_device_is_compatible(np, "qca,qca9550-eth") ||
1424 of_device_is_compatible(np, "qca,qca9560-eth"))
1425 ag->desc_pktlen_mask = SZ_16K - 1;
1427 ag->desc_pktlen_mask = SZ_4K - 1;
1429 if (ag->desc_pktlen_mask == SZ_16K - 1 &&
1430 !of_device_is_compatible(np, "qca,qca9550-eth") &&
1431 !of_device_is_compatible(np, "qca,qca9560-eth"))
1432 max_frame_len = ag->desc_pktlen_mask;
1434 max_frame_len = 1540;
1437 dev->max_mtu = max_frame_len - ag71xx_max_frame_len(0);
1439 if (of_device_is_compatible(np, "qca,ar7240-eth"))
1440 ag->tx_hang_workaround = 1;
1442 ag->rx_buf_offset = NET_SKB_PAD;
1443 if (!of_device_is_compatible(np, "qca,ar7100-eth") &&
1444 !of_device_is_compatible(np, "qca,ar9130-eth"))
1445 ag->rx_buf_offset += NET_IP_ALIGN;
1447 if (of_device_is_compatible(np, "qca,ar7100-eth")) {
1448 ag->tx_ring.desc_split = AG71XX_TX_RING_SPLIT;
1449 tx_size *= AG71XX_TX_RING_DS_PER_PKT;
1451 ag->tx_ring.order = ag71xx_ring_size_order(tx_size);
1453 ag->stop_desc = dmam_alloc_coherent(&pdev->dev,
1454 sizeof(struct ag71xx_desc),
1455 &ag->stop_desc_dma, GFP_KERNEL);
1459 ag->stop_desc->data = 0;
1460 ag->stop_desc->ctrl = 0;
1461 ag->stop_desc->next = (u32) ag->stop_desc_dma;
1463 mac_addr = of_get_mac_address(np);
1465 memcpy(dev->dev_addr, mac_addr, ETH_ALEN);
1466 if (!mac_addr || !is_valid_ether_addr(dev->dev_addr)) {
1467 dev_err(&pdev->dev, "invalid MAC address, using random address\n");
1468 eth_random_addr(dev->dev_addr);
1471 ag->phy_if_mode = of_get_phy_mode(np);
1472 if (ag->phy_if_mode < 0) {
1473 dev_err(&pdev->dev, "missing phy-mode property in DT\n");
1474 return ag->phy_if_mode;
1477 if (of_property_read_u32(np, "qca,mac-idx", &ag->mac_idx))
1480 switch (ag->mac_idx) {
1482 ath79_mii0_ctrl_set_if(ag);
1485 ath79_mii1_ctrl_set_if(ag);
1491 netif_napi_add(dev, &ag->napi, ag71xx_poll, AG71XX_NAPI_WEIGHT);
1493 ag71xx_dump_regs(ag);
1495 ag71xx_wr(ag, AG71XX_REG_MAC_CFG1, 0);
1499 ag71xx_dump_regs(ag);
1502 * populate current node to register mdio-bus as a subdevice.
1503 * the mdio bus works independently on ar7241 and later chips
1504 * and we need to load mdio1 before gmac0, which can be done
1505 * by adding a "simple-mfd" compatible to gmac node. The
1506 * following code checks OF_POPULATED_BUS flag before populating
1507 * to avoid duplicated population.
1509 if (!of_node_check_flag(np, OF_POPULATED_BUS)) {
1510 err = of_platform_populate(np, NULL, NULL, &pdev->dev);
1515 err = ag71xx_phy_connect(ag);
1519 err = ag71xx_debugfs_init(ag);
1521 goto err_phy_disconnect;
1523 platform_set_drvdata(pdev, dev);
1525 err = register_netdev(dev);
1527 dev_err(&pdev->dev, "unable to register net device\n");
1528 platform_set_drvdata(pdev, NULL);
1529 ag71xx_debugfs_exit(ag);
1530 goto err_phy_disconnect;
1533 pr_info("%s: Atheros AG71xx at 0x%08lx, irq %d, mode: %s\n",
1534 dev->name, (unsigned long) ag->mac_base, dev->irq,
1535 phy_modes(ag->phy_if_mode));
1540 ag71xx_phy_disconnect(ag);
1544 static int ag71xx_remove(struct platform_device *pdev)
1546 struct net_device *dev = platform_get_drvdata(pdev);
1552 ag = netdev_priv(dev);
1553 ag71xx_debugfs_exit(ag);
1554 ag71xx_phy_disconnect(ag);
1555 unregister_netdev(dev);
1556 platform_set_drvdata(pdev, NULL);
1560 static const struct of_device_id ag71xx_match[] = {
1561 { .compatible = "qca,ar7100-eth" },
1562 { .compatible = "qca,ar7240-eth" },
1563 { .compatible = "qca,ar7241-eth" },
1564 { .compatible = "qca,ar7242-eth" },
1565 { .compatible = "qca,ar9130-eth" },
1566 { .compatible = "qca,ar9330-eth" },
1567 { .compatible = "qca,ar9340-eth" },
1568 { .compatible = "qca,qca9530-eth" },
1569 { .compatible = "qca,qca9550-eth" },
1570 { .compatible = "qca,qca9560-eth" },
1574 static struct platform_driver ag71xx_driver = {
1575 .probe = ag71xx_probe,
1576 .remove = ag71xx_remove,
1578 .name = AG71XX_DRV_NAME,
1579 .of_match_table = ag71xx_match,
1583 static int __init ag71xx_module_init(void)
1587 ret = ag71xx_debugfs_root_init();
1591 ret = platform_driver_register(&ag71xx_driver);
1593 goto err_debugfs_exit;
1598 ag71xx_debugfs_root_exit();
1603 static void __exit ag71xx_module_exit(void)
1605 platform_driver_unregister(&ag71xx_driver);
1606 ag71xx_debugfs_root_exit();
1609 module_init(ag71xx_module_init);
1610 module_exit(ag71xx_module_exit);
1612 MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
1613 MODULE_AUTHOR("Imre Kaloz <kaloz@openwrt.org>");
1614 MODULE_AUTHOR("Felix Fietkau <nbd@nbd.name>");
1615 MODULE_LICENSE("GPL v2");
1616 MODULE_ALIAS("platform:" AG71XX_DRV_NAME);