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.
16 #define AG71XX_DEFAULT_MSG_ENABLE \
26 static int ag71xx_msg_level = -1;
28 module_param_named(msg_level, ag71xx_msg_level, int, 0);
29 MODULE_PARM_DESC(msg_level, "Message level (-1=defaults,0=none,...,16=all)");
31 static void ag71xx_dump_dma_regs(struct ag71xx *ag)
33 DBG("%s: dma_tx_ctrl=%08x, dma_tx_desc=%08x, dma_tx_status=%08x\n",
35 ag71xx_rr(ag, AG71XX_REG_TX_CTRL),
36 ag71xx_rr(ag, AG71XX_REG_TX_DESC),
37 ag71xx_rr(ag, AG71XX_REG_TX_STATUS));
39 DBG("%s: dma_rx_ctrl=%08x, dma_rx_desc=%08x, dma_rx_status=%08x\n",
41 ag71xx_rr(ag, AG71XX_REG_RX_CTRL),
42 ag71xx_rr(ag, AG71XX_REG_RX_DESC),
43 ag71xx_rr(ag, AG71XX_REG_RX_STATUS));
46 static void ag71xx_dump_regs(struct ag71xx *ag)
48 DBG("%s: mac_cfg1=%08x, mac_cfg2=%08x, ipg=%08x, hdx=%08x, mfl=%08x\n",
50 ag71xx_rr(ag, AG71XX_REG_MAC_CFG1),
51 ag71xx_rr(ag, AG71XX_REG_MAC_CFG2),
52 ag71xx_rr(ag, AG71XX_REG_MAC_IPG),
53 ag71xx_rr(ag, AG71XX_REG_MAC_HDX),
54 ag71xx_rr(ag, AG71XX_REG_MAC_MFL));
55 DBG("%s: mac_ifctl=%08x, mac_addr1=%08x, mac_addr2=%08x\n",
57 ag71xx_rr(ag, AG71XX_REG_MAC_IFCTL),
58 ag71xx_rr(ag, AG71XX_REG_MAC_ADDR1),
59 ag71xx_rr(ag, AG71XX_REG_MAC_ADDR2));
60 DBG("%s: fifo_cfg0=%08x, fifo_cfg1=%08x, fifo_cfg2=%08x\n",
62 ag71xx_rr(ag, AG71XX_REG_FIFO_CFG0),
63 ag71xx_rr(ag, AG71XX_REG_FIFO_CFG1),
64 ag71xx_rr(ag, AG71XX_REG_FIFO_CFG2));
65 DBG("%s: fifo_cfg3=%08x, fifo_cfg4=%08x, fifo_cfg5=%08x\n",
67 ag71xx_rr(ag, AG71XX_REG_FIFO_CFG3),
68 ag71xx_rr(ag, AG71XX_REG_FIFO_CFG4),
69 ag71xx_rr(ag, AG71XX_REG_FIFO_CFG5));
72 static inline void ag71xx_dump_intr(struct ag71xx *ag, char *label, u32 intr)
74 DBG("%s: %s intr=%08x %s%s%s%s%s%s\n",
75 ag->dev->name, label, intr,
76 (intr & AG71XX_INT_TX_PS) ? "TXPS " : "",
77 (intr & AG71XX_INT_TX_UR) ? "TXUR " : "",
78 (intr & AG71XX_INT_TX_BE) ? "TXBE " : "",
79 (intr & AG71XX_INT_RX_PR) ? "RXPR " : "",
80 (intr & AG71XX_INT_RX_OF) ? "RXOF " : "",
81 (intr & AG71XX_INT_RX_BE) ? "RXBE " : "");
84 static void ag71xx_ring_free(struct ag71xx_ring *ring)
89 dma_free_coherent(NULL, ring->size * ring->desc_size,
90 ring->descs_cpu, ring->descs_dma);
93 static int ag71xx_ring_alloc(struct ag71xx_ring *ring, unsigned int size)
98 ring->desc_size = sizeof(struct ag71xx_desc);
99 if (ring->desc_size % cache_line_size()) {
100 DBG("ag71xx: ring %p, desc size %u rounded to %u\n",
101 ring, ring->desc_size,
102 roundup(ring->desc_size, cache_line_size()));
103 ring->desc_size = roundup(ring->desc_size, cache_line_size());
106 ring->descs_cpu = dma_alloc_coherent(NULL, size * ring->desc_size,
107 &ring->descs_dma, GFP_ATOMIC);
108 if (!ring->descs_cpu) {
115 ring->buf = kzalloc(size * sizeof(*ring->buf), GFP_KERNEL);
121 for (i = 0; i < size; i++) {
122 ring->buf[i].desc = (struct ag71xx_desc *)&ring->descs_cpu[i * ring->desc_size];
123 DBG("ag71xx: ring %p, desc %d at %p\n",
124 ring, i, ring->buf[i].desc);
133 static void ag71xx_ring_tx_clean(struct ag71xx *ag)
135 struct ag71xx_ring *ring = &ag->tx_ring;
136 struct net_device *dev = ag->dev;
138 while (ring->curr != ring->dirty) {
139 u32 i = ring->dirty % AG71XX_TX_RING_SIZE;
141 if (!ag71xx_desc_empty(ring->buf[i].desc)) {
142 ring->buf[i].desc->ctrl = 0;
143 dev->stats.tx_errors++;
146 if (ring->buf[i].skb)
147 dev_kfree_skb_any(ring->buf[i].skb);
149 ring->buf[i].skb = NULL;
154 /* flush descriptors */
159 static void ag71xx_ring_tx_init(struct ag71xx *ag)
161 struct ag71xx_ring *ring = &ag->tx_ring;
164 for (i = 0; i < AG71XX_TX_RING_SIZE; i++) {
165 ring->buf[i].desc->next = (u32) (ring->descs_dma +
166 ring->desc_size * ((i + 1) % AG71XX_TX_RING_SIZE));
168 ring->buf[i].desc->ctrl = DESC_EMPTY;
169 ring->buf[i].skb = NULL;
172 /* flush descriptors */
179 static void ag71xx_ring_rx_clean(struct ag71xx *ag)
181 struct ag71xx_ring *ring = &ag->rx_ring;
187 for (i = 0; i < AG71XX_RX_RING_SIZE; i++)
188 if (ring->buf[i].skb)
189 kfree_skb(ring->buf[i].skb);
193 static int ag71xx_ring_rx_init(struct ag71xx *ag)
195 struct ag71xx_ring *ring = &ag->rx_ring;
200 for (i = 0; i < AG71XX_RX_RING_SIZE; i++) {
201 ring->buf[i].desc->next = (u32) (ring->descs_dma +
202 ring->desc_size * ((i + 1) % AG71XX_RX_RING_SIZE));
204 DBG("ag71xx: RX desc at %p, next is %08x\n",
206 ring->buf[i].desc->next);
209 for (i = 0; i < AG71XX_RX_RING_SIZE; i++) {
213 skb = dev_alloc_skb(AG71XX_RX_PKT_SIZE + AG71XX_RX_PKT_RESERVE);
220 skb_reserve(skb, AG71XX_RX_PKT_RESERVE);
222 dma_addr = dma_map_single(&ag->dev->dev, skb->data,
225 ring->buf[i].skb = skb;
226 ring->buf[i].desc->data = (u32) dma_addr;
227 ring->buf[i].desc->ctrl = DESC_EMPTY;
230 /* flush descriptors */
239 static int ag71xx_ring_rx_refill(struct ag71xx *ag)
241 struct ag71xx_ring *ring = &ag->rx_ring;
245 for (; ring->curr - ring->dirty > 0; ring->dirty++) {
248 i = ring->dirty % AG71XX_RX_RING_SIZE;
250 if (ring->buf[i].skb == NULL) {
254 skb = dev_alloc_skb(AG71XX_RX_PKT_SIZE +
255 AG71XX_RX_PKT_RESERVE);
259 skb_reserve(skb, AG71XX_RX_PKT_RESERVE);
262 dma_addr = dma_map_single(&ag->dev->dev, skb->data,
266 ring->buf[i].skb = skb;
267 ring->buf[i].desc->data = (u32) dma_addr;
270 ring->buf[i].desc->ctrl = DESC_EMPTY;
274 /* flush descriptors */
277 DBG("%s: %u rx descriptors refilled\n", ag->dev->name, count);
282 static int ag71xx_rings_init(struct ag71xx *ag)
286 ret = ag71xx_ring_alloc(&ag->tx_ring, AG71XX_TX_RING_SIZE);
290 ag71xx_ring_tx_init(ag);
292 ret = ag71xx_ring_alloc(&ag->rx_ring, AG71XX_RX_RING_SIZE);
296 ret = ag71xx_ring_rx_init(ag);
300 static void ag71xx_rings_cleanup(struct ag71xx *ag)
302 ag71xx_ring_rx_clean(ag);
303 ag71xx_ring_free(&ag->rx_ring);
305 ag71xx_ring_tx_clean(ag);
306 ag71xx_ring_free(&ag->tx_ring);
309 static void ag71xx_hw_set_macaddr(struct ag71xx *ag, unsigned char *mac)
313 t = (((u32) mac[0]) << 24) | (((u32) mac[1]) << 16)
314 | (((u32) mac[2]) << 8) | ((u32) mac[3]);
316 ag71xx_wr(ag, AG71XX_REG_MAC_ADDR1, t);
318 t = (((u32) mac[4]) << 24) | (((u32) mac[5]) << 16);
319 ag71xx_wr(ag, AG71XX_REG_MAC_ADDR2, t);
322 static void ag71xx_dma_reset(struct ag71xx *ag)
327 ag71xx_dump_dma_regs(ag);
330 ag71xx_wr(ag, AG71XX_REG_RX_CTRL, 0);
331 ag71xx_wr(ag, AG71XX_REG_TX_CTRL, 0);
333 /* clear descriptor addresses */
334 ag71xx_wr(ag, AG71XX_REG_TX_DESC, 0);
335 ag71xx_wr(ag, AG71XX_REG_RX_DESC, 0);
337 /* clear pending RX/TX interrupts */
338 for (i = 0; i < 256; i++) {
339 ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR);
340 ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_PS);
343 /* clear pending errors */
344 ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_BE | RX_STATUS_OF);
345 ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_BE | TX_STATUS_UR);
347 val = ag71xx_rr(ag, AG71XX_REG_RX_STATUS);
349 printk(KERN_ALERT "%s: unable to clear DMA Rx status: %08x\n",
352 val = ag71xx_rr(ag, AG71XX_REG_TX_STATUS);
354 /* mask out reserved bits */
358 printk(KERN_ALERT "%s: unable to clear DMA Tx status: %08x\n",
361 ag71xx_dump_dma_regs(ag);
364 #define MAC_CFG1_INIT (MAC_CFG1_RXE | MAC_CFG1_TXE | \
365 MAC_CFG1_SRX | MAC_CFG1_STX)
367 #define FIFO_CFG0_INIT (FIFO_CFG0_ALL << FIFO_CFG0_ENABLE_SHIFT)
369 #define FIFO_CFG4_INIT (FIFO_CFG4_DE | FIFO_CFG4_DV | FIFO_CFG4_FC | \
370 FIFO_CFG4_CE | FIFO_CFG4_CR | FIFO_CFG4_LM | \
371 FIFO_CFG4_LO | FIFO_CFG4_OK | FIFO_CFG4_MC | \
372 FIFO_CFG4_BC | FIFO_CFG4_DR | FIFO_CFG4_LE | \
373 FIFO_CFG4_CF | FIFO_CFG4_PF | FIFO_CFG4_UO | \
376 #define FIFO_CFG5_INIT (FIFO_CFG5_DE | FIFO_CFG5_DV | FIFO_CFG5_FC | \
377 FIFO_CFG5_CE | FIFO_CFG5_LO | FIFO_CFG5_OK | \
378 FIFO_CFG5_MC | FIFO_CFG5_BC | FIFO_CFG5_DR | \
379 FIFO_CFG5_CF | FIFO_CFG5_PF | FIFO_CFG5_VT | \
380 FIFO_CFG5_LE | FIFO_CFG5_FT | FIFO_CFG5_16 | \
381 FIFO_CFG5_17 | FIFO_CFG5_SF)
383 static void ag71xx_hw_init(struct ag71xx *ag)
385 struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
387 ag71xx_sb(ag, AG71XX_REG_MAC_CFG1, MAC_CFG1_SR);
390 ar71xx_device_stop(pdata->reset_bit);
392 ar71xx_device_start(pdata->reset_bit);
395 /* setup MAC configuration registers */
396 if (pdata->is_ar724x)
397 ag71xx_wr(ag, AG71XX_REG_MAC_CFG1,
398 MAC_CFG1_INIT | MAC_CFG1_TFC | MAC_CFG1_RFC);
400 ag71xx_wr(ag, AG71XX_REG_MAC_CFG1, MAC_CFG1_INIT);
402 ag71xx_sb(ag, AG71XX_REG_MAC_CFG2,
403 MAC_CFG2_PAD_CRC_EN | MAC_CFG2_LEN_CHECK);
405 /* setup max frame length */
406 ag71xx_wr(ag, AG71XX_REG_MAC_MFL, AG71XX_TX_MTU_LEN);
408 /* setup MII interface type */
409 ag71xx_mii_ctrl_set_if(ag, pdata->mii_if);
411 /* setup FIFO configuration registers */
412 ag71xx_wr(ag, AG71XX_REG_FIFO_CFG0, FIFO_CFG0_INIT);
413 if (pdata->is_ar724x) {
414 ag71xx_wr(ag, AG71XX_REG_FIFO_CFG1, pdata->fifo_cfg1);
415 ag71xx_wr(ag, AG71XX_REG_FIFO_CFG2, pdata->fifo_cfg2);
417 ag71xx_wr(ag, AG71XX_REG_FIFO_CFG1, 0x0fff0000);
418 ag71xx_wr(ag, AG71XX_REG_FIFO_CFG2, 0x00001fff);
420 ag71xx_wr(ag, AG71XX_REG_FIFO_CFG4, FIFO_CFG4_INIT);
421 ag71xx_wr(ag, AG71XX_REG_FIFO_CFG5, FIFO_CFG5_INIT);
423 ag71xx_dma_reset(ag);
426 static void ag71xx_hw_start(struct ag71xx *ag)
428 /* start RX engine */
429 ag71xx_wr(ag, AG71XX_REG_RX_CTRL, RX_CTRL_RXE);
431 /* enable interrupts */
432 ag71xx_wr(ag, AG71XX_REG_INT_ENABLE, AG71XX_INT_INIT);
435 static void ag71xx_hw_stop(struct ag71xx *ag)
437 /* disable all interrupts */
438 ag71xx_wr(ag, AG71XX_REG_INT_ENABLE, 0);
440 ag71xx_dma_reset(ag);
443 static int ag71xx_open(struct net_device *dev)
445 struct ag71xx *ag = netdev_priv(dev);
448 ret = ag71xx_rings_init(ag);
452 napi_enable(&ag->napi);
454 netif_carrier_off(dev);
455 ag71xx_phy_start(ag);
457 ag71xx_wr(ag, AG71XX_REG_TX_DESC, ag->tx_ring.descs_dma);
458 ag71xx_wr(ag, AG71XX_REG_RX_DESC, ag->rx_ring.descs_dma);
460 ag71xx_hw_set_macaddr(ag, dev->dev_addr);
464 netif_start_queue(dev);
469 ag71xx_rings_cleanup(ag);
473 static int ag71xx_stop(struct net_device *dev)
475 struct ag71xx *ag = netdev_priv(dev);
478 spin_lock_irqsave(&ag->lock, flags);
480 netif_stop_queue(dev);
484 netif_carrier_off(dev);
487 napi_disable(&ag->napi);
488 del_timer_sync(&ag->oom_timer);
490 spin_unlock_irqrestore(&ag->lock, flags);
492 ag71xx_rings_cleanup(ag);
497 static netdev_tx_t ag71xx_hard_start_xmit(struct sk_buff *skb,
498 struct net_device *dev)
500 struct ag71xx *ag = netdev_priv(dev);
501 struct ag71xx_ring *ring = &ag->tx_ring;
502 struct ag71xx_desc *desc;
506 i = ring->curr % AG71XX_TX_RING_SIZE;
507 desc = ring->buf[i].desc;
509 if (!ag71xx_desc_empty(desc))
512 ag71xx_add_ar8216_header(ag, skb);
515 DBG("%s: packet len is too small\n", ag->dev->name);
519 dma_addr = dma_map_single(&dev->dev, skb->data, skb->len,
522 ring->buf[i].skb = skb;
524 /* setup descriptor fields */
525 desc->data = (u32) dma_addr;
526 desc->ctrl = (skb->len & DESC_PKTLEN_M);
528 /* flush descriptor */
532 if (ring->curr == (ring->dirty + AG71XX_TX_THRES_STOP)) {
533 DBG("%s: tx queue full\n", ag->dev->name);
534 netif_stop_queue(dev);
537 DBG("%s: packet injected into TX queue\n", ag->dev->name);
539 /* enable TX engine */
540 ag71xx_wr(ag, AG71XX_REG_TX_CTRL, TX_CTRL_TXE);
542 dev->trans_start = jiffies;
547 dev->stats.tx_dropped++;
553 static int ag71xx_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
555 struct mii_ioctl_data *data = (struct mii_ioctl_data *) &ifr->ifr_data;
556 struct ag71xx *ag = netdev_priv(dev);
561 if (ag->phy_dev == NULL)
564 spin_lock_irq(&ag->lock);
565 ret = phy_ethtool_ioctl(ag->phy_dev, (void *) ifr->ifr_data);
566 spin_unlock_irq(&ag->lock);
571 (dev->dev_addr, ifr->ifr_data, sizeof(dev->dev_addr)))
577 (ifr->ifr_data, dev->dev_addr, sizeof(dev->dev_addr)))
584 if (ag->phy_dev == NULL)
587 return phy_mii_ioctl(ag->phy_dev, data, cmd);
596 static void ag71xx_oom_timer_handler(unsigned long data)
598 struct net_device *dev = (struct net_device *) data;
599 struct ag71xx *ag = netdev_priv(dev);
601 napi_schedule(&ag->napi);
604 static void ag71xx_tx_timeout(struct net_device *dev)
606 struct ag71xx *ag = netdev_priv(dev);
608 if (netif_msg_tx_err(ag))
609 printk(KERN_DEBUG "%s: tx timeout\n", ag->dev->name);
611 schedule_work(&ag->restart_work);
614 static void ag71xx_restart_work_func(struct work_struct *work)
616 struct ag71xx *ag = container_of(work, struct ag71xx, restart_work);
618 ag71xx_stop(ag->dev);
619 ag71xx_open(ag->dev);
622 static int ag71xx_tx_packets(struct ag71xx *ag)
624 struct ag71xx_ring *ring = &ag->tx_ring;
627 DBG("%s: processing TX ring\n", ag->dev->name);
630 while (ring->dirty != ring->curr) {
631 unsigned int i = ring->dirty % AG71XX_TX_RING_SIZE;
632 struct ag71xx_desc *desc = ring->buf[i].desc;
633 struct sk_buff *skb = ring->buf[i].skb;
635 if (!ag71xx_desc_empty(desc))
638 ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_PS);
640 ag->dev->stats.tx_bytes += skb->len;
641 ag->dev->stats.tx_packets++;
643 dev_kfree_skb_any(skb);
644 ring->buf[i].skb = NULL;
650 DBG("%s: %d packets sent out\n", ag->dev->name, sent);
652 if ((ring->curr - ring->dirty) < AG71XX_TX_THRES_WAKEUP)
653 netif_wake_queue(ag->dev);
658 static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
660 struct net_device *dev = ag->dev;
661 struct ag71xx_ring *ring = &ag->rx_ring;
664 DBG("%s: rx packets, limit=%d, curr=%u, dirty=%u\n",
665 dev->name, limit, ring->curr, ring->dirty);
667 while (done < limit) {
668 unsigned int i = ring->curr % AG71XX_RX_RING_SIZE;
669 struct ag71xx_desc *desc = ring->buf[i].desc;
673 if (ag71xx_desc_empty(desc))
676 if ((ring->dirty + AG71XX_RX_RING_SIZE) == ring->curr) {
681 ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR);
683 skb = ring->buf[i].skb;
684 pktlen = ag71xx_desc_pktlen(desc);
685 pktlen -= ETH_FCS_LEN;
687 skb_put(skb, pktlen);
690 skb->ip_summed = CHECKSUM_NONE;
692 dev->last_rx = jiffies;
693 dev->stats.rx_packets++;
694 dev->stats.rx_bytes += pktlen;
696 if (ag71xx_remove_ar8216_header(ag, skb) != 0) {
697 dev->stats.rx_dropped++;
700 skb->protocol = eth_type_trans(skb, dev);
701 netif_receive_skb(skb);
704 ring->buf[i].skb = NULL;
710 ag71xx_ring_rx_refill(ag);
712 DBG("%s: rx finish, curr=%u, dirty=%u, done=%d\n",
713 dev->name, ring->curr, ring->dirty, done);
718 static int ag71xx_poll(struct napi_struct *napi, int limit)
720 struct ag71xx *ag = container_of(napi, struct ag71xx, napi);
721 struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
722 struct net_device *dev = ag->dev;
723 struct ag71xx_ring *rx_ring;
730 tx_done = ag71xx_tx_packets(ag);
732 DBG("%s: processing RX ring\n", dev->name);
733 rx_done = ag71xx_rx_packets(ag, limit);
735 ag71xx_debugfs_update_napi_stats(ag, rx_done, tx_done);
737 rx_ring = &ag->rx_ring;
738 if (rx_ring->buf[rx_ring->dirty % AG71XX_RX_RING_SIZE].skb == NULL)
741 status = ag71xx_rr(ag, AG71XX_REG_RX_STATUS);
742 if (unlikely(status & RX_STATUS_OF)) {
743 ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_OF);
744 dev->stats.rx_fifo_errors++;
747 ag71xx_wr(ag, AG71XX_REG_RX_CTRL, RX_CTRL_RXE);
750 if (rx_done < limit) {
751 if (status & RX_STATUS_PR)
754 status = ag71xx_rr(ag, AG71XX_REG_TX_STATUS);
755 if (status & TX_STATUS_PS)
758 DBG("%s: disable polling mode, rx=%d, tx=%d,limit=%d\n",
759 dev->name, rx_done, tx_done, limit);
763 /* enable interrupts */
764 spin_lock_irqsave(&ag->lock, flags);
765 ag71xx_int_enable(ag, AG71XX_INT_POLL);
766 spin_unlock_irqrestore(&ag->lock, flags);
771 DBG("%s: stay in polling mode, rx=%d, tx=%d, limit=%d\n",
772 dev->name, rx_done, tx_done, limit);
776 if (netif_msg_rx_err(ag))
777 printk(KERN_DEBUG "%s: out of memory\n", dev->name);
779 mod_timer(&ag->oom_timer, jiffies + AG71XX_OOM_REFILL);
784 static irqreturn_t ag71xx_interrupt(int irq, void *dev_id)
786 struct net_device *dev = dev_id;
787 struct ag71xx *ag = netdev_priv(dev);
790 status = ag71xx_rr(ag, AG71XX_REG_INT_STATUS);
791 ag71xx_dump_intr(ag, "raw", status);
793 if (unlikely(!status))
796 if (unlikely(status & AG71XX_INT_ERR)) {
797 if (status & AG71XX_INT_TX_BE) {
798 ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_BE);
799 dev_err(&dev->dev, "TX BUS error\n");
801 if (status & AG71XX_INT_RX_BE) {
802 ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_BE);
803 dev_err(&dev->dev, "RX BUS error\n");
807 if (likely(status & AG71XX_INT_POLL)) {
808 ag71xx_int_disable(ag, AG71XX_INT_POLL);
809 DBG("%s: enable polling mode\n", dev->name);
810 napi_schedule(&ag->napi);
813 ag71xx_debugfs_update_int_stats(ag, status);
818 static void ag71xx_set_multicast_list(struct net_device *dev)
823 static const struct net_device_ops ag71xx_netdev_ops = {
824 .ndo_open = ag71xx_open,
825 .ndo_stop = ag71xx_stop,
826 .ndo_start_xmit = ag71xx_hard_start_xmit,
827 .ndo_set_multicast_list = ag71xx_set_multicast_list,
828 .ndo_do_ioctl = ag71xx_do_ioctl,
829 .ndo_tx_timeout = ag71xx_tx_timeout,
830 .ndo_change_mtu = eth_change_mtu,
831 .ndo_set_mac_address = eth_mac_addr,
832 .ndo_validate_addr = eth_validate_addr,
835 static int __init ag71xx_probe(struct platform_device *pdev)
837 struct net_device *dev;
838 struct resource *res;
840 struct ag71xx_platform_data *pdata;
843 pdata = pdev->dev.platform_data;
845 dev_err(&pdev->dev, "no platform data specified\n");
850 if (pdata->mii_bus_dev == NULL) {
851 dev_err(&pdev->dev, "no MII bus device specified\n");
856 dev = alloc_etherdev(sizeof(*ag));
858 dev_err(&pdev->dev, "alloc_etherdev failed\n");
863 SET_NETDEV_DEV(dev, &pdev->dev);
865 ag = netdev_priv(dev);
868 ag->msg_enable = netif_msg_init(ag71xx_msg_level,
869 AG71XX_DEFAULT_MSG_ENABLE);
870 spin_lock_init(&ag->lock);
872 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mac_base");
874 dev_err(&pdev->dev, "no mac_base resource found\n");
879 ag->mac_base = ioremap_nocache(res->start, res->end - res->start + 1);
881 dev_err(&pdev->dev, "unable to ioremap mac_base\n");
886 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mii_ctrl");
888 dev_err(&pdev->dev, "no mii_ctrl resource found\n");
893 ag->mii_ctrl = ioremap_nocache(res->start, res->end - res->start + 1);
895 dev_err(&pdev->dev, "unable to ioremap mii_ctrl\n");
900 dev->irq = platform_get_irq(pdev, 0);
901 err = request_irq(dev->irq, ag71xx_interrupt,
902 IRQF_DISABLED | IRQF_SAMPLE_RANDOM,
905 dev_err(&pdev->dev, "unable to request IRQ %d\n", dev->irq);
906 goto err_unmap_mii_ctrl;
909 dev->base_addr = (unsigned long)ag->mac_base;
910 dev->netdev_ops = &ag71xx_netdev_ops;
911 dev->ethtool_ops = &ag71xx_ethtool_ops;
913 INIT_WORK(&ag->restart_work, ag71xx_restart_work_func);
915 init_timer(&ag->oom_timer);
916 ag->oom_timer.data = (unsigned long) dev;
917 ag->oom_timer.function = ag71xx_oom_timer_handler;
919 memcpy(dev->dev_addr, pdata->mac_addr, ETH_ALEN);
921 netif_napi_add(dev, &ag->napi, ag71xx_poll, AG71XX_NAPI_WEIGHT);
923 err = register_netdev(dev);
925 dev_err(&pdev->dev, "unable to register net device\n");
929 printk(KERN_INFO "%s: Atheros AG71xx at 0x%08lx, irq %d\n",
930 dev->name, dev->base_addr, dev->irq);
932 ag71xx_dump_regs(ag);
936 ag71xx_dump_regs(ag);
938 err = ag71xx_phy_connect(ag);
940 goto err_unregister_netdev;
942 err = ag71xx_debugfs_init(ag);
944 goto err_phy_disconnect;
946 platform_set_drvdata(pdev, dev);
951 ag71xx_phy_disconnect(ag);
952 err_unregister_netdev:
953 unregister_netdev(dev);
955 free_irq(dev->irq, dev);
957 iounmap(ag->mii_ctrl);
959 iounmap(ag->mac_base);
963 platform_set_drvdata(pdev, NULL);
967 static int __exit ag71xx_remove(struct platform_device *pdev)
969 struct net_device *dev = platform_get_drvdata(pdev);
972 struct ag71xx *ag = netdev_priv(dev);
974 ag71xx_debugfs_exit(ag);
975 ag71xx_phy_disconnect(ag);
976 unregister_netdev(dev);
977 free_irq(dev->irq, dev);
978 iounmap(ag->mii_ctrl);
979 iounmap(ag->mac_base);
981 platform_set_drvdata(pdev, NULL);
987 static struct platform_driver ag71xx_driver = {
988 .probe = ag71xx_probe,
989 .remove = __exit_p(ag71xx_remove),
991 .name = AG71XX_DRV_NAME,
995 static int __init ag71xx_module_init(void)
999 ret = ag71xx_debugfs_root_init();
1003 ret = ag71xx_mdio_driver_init();
1005 goto err_debugfs_exit;
1007 ret = platform_driver_register(&ag71xx_driver);
1014 ag71xx_mdio_driver_exit();
1016 ag71xx_debugfs_root_exit();
1021 static void __exit ag71xx_module_exit(void)
1023 platform_driver_unregister(&ag71xx_driver);
1024 ag71xx_mdio_driver_exit();
1025 ag71xx_debugfs_root_exit();
1028 module_init(ag71xx_module_init);
1029 module_exit(ag71xx_module_exit);
1031 MODULE_VERSION(AG71XX_DRV_VERSION);
1032 MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
1033 MODULE_AUTHOR("Imre Kaloz <kaloz@openwrt.org>");
1034 MODULE_LICENSE("GPL v2");
1035 MODULE_ALIAS("platform:" AG71XX_DRV_NAME);