2 * Atheros AR71xx built-in ethernet mac driver
4 * Copyright (C) 2008-2009 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_debug = -1;
28 module_param(ag71xx_debug, int, 0);
29 MODULE_PARM_DESC(ag71xx_debug, "Debug 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 * sizeof(*ring->descs),
90 ring->descs, ring->descs_dma);
93 static int ag71xx_ring_alloc(struct ag71xx_ring *ring, unsigned int size)
97 ring->descs = dma_alloc_coherent(NULL, size * sizeof(*ring->descs),
107 ring->buf = kzalloc(size * sizeof(*ring->buf), GFP_KERNEL);
119 static void ag71xx_ring_tx_clean(struct ag71xx *ag)
121 struct ag71xx_ring *ring = &ag->tx_ring;
122 struct net_device *dev = ag->dev;
124 while (ring->curr != ring->dirty) {
125 u32 i = ring->dirty % AG71XX_TX_RING_SIZE;
127 if (!ag71xx_desc_empty(&ring->descs[i])) {
128 ring->descs[i].ctrl = 0;
129 dev->stats.tx_errors++;
132 if (ring->buf[i].skb)
133 dev_kfree_skb_any(ring->buf[i].skb);
135 ring->buf[i].skb = NULL;
140 /* flush descriptors */
145 static void ag71xx_ring_tx_init(struct ag71xx *ag)
147 struct ag71xx_ring *ring = &ag->tx_ring;
150 for (i = 0; i < AG71XX_TX_RING_SIZE; i++) {
151 ring->descs[i].next = (u32) (ring->descs_dma +
152 sizeof(*ring->descs) * ((i + 1) % AG71XX_TX_RING_SIZE));
154 ring->descs[i].ctrl = DESC_EMPTY;
155 ring->buf[i].skb = NULL;
158 /* flush descriptors */
165 static void ag71xx_ring_rx_clean(struct ag71xx *ag)
167 struct ag71xx_ring *ring = &ag->rx_ring;
173 for (i = 0; i < AG71XX_RX_RING_SIZE; i++)
174 if (ring->buf[i].skb)
175 kfree_skb(ring->buf[i].skb);
179 static int ag71xx_ring_rx_init(struct ag71xx *ag)
181 struct ag71xx_ring *ring = &ag->rx_ring;
186 for (i = 0; i < AG71XX_RX_RING_SIZE; i++)
187 ring->descs[i].next = (u32) (ring->descs_dma +
188 sizeof(*ring->descs) * ((i + 1) % AG71XX_RX_RING_SIZE));
190 for (i = 0; i < AG71XX_RX_RING_SIZE; i++) {
193 skb = dev_alloc_skb(AG71XX_RX_PKT_SIZE);
199 dma_map_single(NULL, skb->data, AG71XX_RX_PKT_SIZE,
203 skb_reserve(skb, AG71XX_RX_PKT_RESERVE);
205 ring->buf[i].skb = skb;
206 ring->descs[i].data = virt_to_phys(skb->data);
207 ring->descs[i].ctrl = DESC_EMPTY;
210 /* flush descriptors */
219 static int ag71xx_ring_rx_refill(struct ag71xx *ag)
221 struct ag71xx_ring *ring = &ag->rx_ring;
225 for (; ring->curr - ring->dirty > 0; ring->dirty++) {
228 i = ring->dirty % AG71XX_RX_RING_SIZE;
230 if (ring->buf[i].skb == NULL) {
233 skb = dev_alloc_skb(AG71XX_RX_PKT_SIZE);
237 dma_map_single(NULL, skb->data, AG71XX_RX_PKT_SIZE,
240 skb_reserve(skb, AG71XX_RX_PKT_RESERVE);
243 ring->buf[i].skb = skb;
244 ring->descs[i].data = virt_to_phys(skb->data);
247 ring->descs[i].ctrl = DESC_EMPTY;
251 /* flush descriptors */
254 DBG("%s: %u rx descriptors refilled\n", ag->dev->name, count);
259 static int ag71xx_rings_init(struct ag71xx *ag)
263 ret = ag71xx_ring_alloc(&ag->tx_ring, AG71XX_TX_RING_SIZE);
267 ag71xx_ring_tx_init(ag);
269 ret = ag71xx_ring_alloc(&ag->rx_ring, AG71XX_RX_RING_SIZE);
273 ret = ag71xx_ring_rx_init(ag);
277 static void ag71xx_rings_cleanup(struct ag71xx *ag)
279 ag71xx_ring_rx_clean(ag);
280 ag71xx_ring_free(&ag->rx_ring);
282 ag71xx_ring_tx_clean(ag);
283 ag71xx_ring_free(&ag->tx_ring);
286 static void ag71xx_hw_set_macaddr(struct ag71xx *ag, unsigned char *mac)
290 t = (((u32) mac[0]) << 24) | (((u32) mac[1]) << 16)
291 | (((u32) mac[2]) << 8) | ((u32) mac[3]);
293 ag71xx_wr(ag, AG71XX_REG_MAC_ADDR1, t);
295 t = (((u32) mac[4]) << 24) | (((u32) mac[5]) << 16);
296 ag71xx_wr(ag, AG71XX_REG_MAC_ADDR2, t);
299 static void ag71xx_dma_reset(struct ag71xx *ag)
303 ag71xx_dump_dma_regs(ag);
306 ag71xx_wr(ag, AG71XX_REG_RX_CTRL, 0);
307 ag71xx_wr(ag, AG71XX_REG_TX_CTRL, 0);
309 /* clear descriptor addresses */
310 ag71xx_wr(ag, AG71XX_REG_TX_DESC, 0);
311 ag71xx_wr(ag, AG71XX_REG_RX_DESC, 0);
313 /* clear pending RX/TX interrupts */
314 for (i = 0; i < 256; i++) {
315 ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR);
316 ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_PS);
319 /* clear pending errors */
320 ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_BE | RX_STATUS_OF);
321 ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_BE | TX_STATUS_UR);
323 if (ag71xx_rr(ag, AG71XX_REG_RX_STATUS))
324 printk(KERN_ALERT "%s: unable to clear DMA Rx status\n",
327 if (ag71xx_rr(ag, AG71XX_REG_TX_STATUS))
328 printk(KERN_ALERT "%s: unable to clear DMA Tx status\n",
331 ag71xx_dump_dma_regs(ag);
334 #define MAC_CFG1_INIT (MAC_CFG1_RXE | MAC_CFG1_TXE | \
335 MAC_CFG1_SRX | MAC_CFG1_STX)
337 #define FIFO_CFG0_INIT (FIFO_CFG0_ALL << FIFO_CFG0_ENABLE_SHIFT)
339 #define FIFO_CFG4_INIT (FIFO_CFG4_DE | FIFO_CFG4_DV | FIFO_CFG4_FC | \
340 FIFO_CFG4_CE | FIFO_CFG4_CR | FIFO_CFG4_LM | \
341 FIFO_CFG4_LO | FIFO_CFG4_OK | FIFO_CFG4_MC | \
342 FIFO_CFG4_BC | FIFO_CFG4_DR | FIFO_CFG4_LE | \
343 FIFO_CFG4_CF | FIFO_CFG4_PF | FIFO_CFG4_UO | \
346 #define FIFO_CFG5_INIT (FIFO_CFG5_DE | FIFO_CFG5_DV | FIFO_CFG5_FC | \
347 FIFO_CFG5_CE | FIFO_CFG5_LO | FIFO_CFG5_OK | \
348 FIFO_CFG5_MC | FIFO_CFG5_BC | FIFO_CFG5_DR | \
349 FIFO_CFG5_CF | FIFO_CFG5_PF | FIFO_CFG5_VT | \
350 FIFO_CFG5_LE | FIFO_CFG5_FT | FIFO_CFG5_16 | \
351 FIFO_CFG5_17 | FIFO_CFG5_SF)
353 static void ag71xx_hw_init(struct ag71xx *ag)
355 struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
357 ag71xx_sb(ag, AG71XX_REG_MAC_CFG1, MAC_CFG1_SR);
360 ar71xx_device_stop(pdata->reset_bit);
362 ar71xx_device_start(pdata->reset_bit);
365 /* setup MAC configuration registers */
366 ag71xx_wr(ag, AG71XX_REG_MAC_CFG1, MAC_CFG1_INIT);
367 ag71xx_sb(ag, AG71XX_REG_MAC_CFG2,
368 MAC_CFG2_PAD_CRC_EN | MAC_CFG2_LEN_CHECK);
370 /* setup max frame length */
371 ag71xx_wr(ag, AG71XX_REG_MAC_MFL, AG71XX_TX_MTU_LEN);
373 /* setup MII interface type */
374 ag71xx_mii_ctrl_set_if(ag, pdata->mii_if);
376 /* setup FIFO configuration registers */
377 ag71xx_wr(ag, AG71XX_REG_FIFO_CFG0, FIFO_CFG0_INIT);
378 ag71xx_wr(ag, AG71XX_REG_FIFO_CFG1, 0x0fff0000);
379 ag71xx_wr(ag, AG71XX_REG_FIFO_CFG2, 0x00001fff);
380 ag71xx_wr(ag, AG71XX_REG_FIFO_CFG4, FIFO_CFG4_INIT);
381 ag71xx_wr(ag, AG71XX_REG_FIFO_CFG5, FIFO_CFG5_INIT);
383 ag71xx_dma_reset(ag);
386 static void ag71xx_hw_start(struct ag71xx *ag)
388 /* start RX engine */
389 ag71xx_wr(ag, AG71XX_REG_RX_CTRL, RX_CTRL_RXE);
391 /* enable interrupts */
392 ag71xx_wr(ag, AG71XX_REG_INT_ENABLE, AG71XX_INT_INIT);
395 static void ag71xx_hw_stop(struct ag71xx *ag)
397 /* disable all interrupts */
398 ag71xx_wr(ag, AG71XX_REG_INT_ENABLE, 0);
400 ag71xx_dma_reset(ag);
403 static int ag71xx_open(struct net_device *dev)
405 struct ag71xx *ag = netdev_priv(dev);
408 ret = ag71xx_rings_init(ag);
412 napi_enable(&ag->napi);
414 netif_carrier_off(dev);
415 ag71xx_phy_start(ag);
417 ag71xx_wr(ag, AG71XX_REG_TX_DESC, ag->tx_ring.descs_dma);
418 ag71xx_wr(ag, AG71XX_REG_RX_DESC, ag->rx_ring.descs_dma);
420 ag71xx_hw_set_macaddr(ag, dev->dev_addr);
424 netif_start_queue(dev);
429 ag71xx_rings_cleanup(ag);
433 static int ag71xx_stop(struct net_device *dev)
435 struct ag71xx *ag = netdev_priv(dev);
438 spin_lock_irqsave(&ag->lock, flags);
440 netif_stop_queue(dev);
444 netif_carrier_off(dev);
447 napi_disable(&ag->napi);
448 del_timer_sync(&ag->oom_timer);
450 spin_unlock_irqrestore(&ag->lock, flags);
452 ag71xx_rings_cleanup(ag);
457 static int ag71xx_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
459 struct ag71xx *ag = netdev_priv(dev);
460 struct ag71xx_ring *ring = &ag->tx_ring;
461 struct ag71xx_desc *desc;
464 i = ring->curr % AG71XX_TX_RING_SIZE;
465 desc = &ring->descs[i];
467 if (!ag71xx_desc_empty(desc))
470 ag71xx_add_ar8216_header(ag, skb);
473 DBG("%s: packet len is too small\n", ag->dev->name);
477 dma_map_single(NULL, skb->data, skb->len, DMA_TO_DEVICE);
479 ring->buf[i].skb = skb;
481 /* setup descriptor fields */
482 desc->data = virt_to_phys(skb->data);
483 desc->ctrl = (skb->len & DESC_PKTLEN_M);
485 /* flush descriptor */
489 if (ring->curr == (ring->dirty + AG71XX_TX_THRES_STOP)) {
490 DBG("%s: tx queue full\n", ag->dev->name);
491 netif_stop_queue(dev);
494 DBG("%s: packet injected into TX queue\n", ag->dev->name);
496 /* enable TX engine */
497 ag71xx_wr(ag, AG71XX_REG_TX_CTRL, TX_CTRL_TXE);
499 dev->trans_start = jiffies;
504 dev->stats.tx_dropped++;
510 static int ag71xx_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
512 struct mii_ioctl_data *data = (struct mii_ioctl_data *) &ifr->ifr_data;
513 struct ag71xx *ag = netdev_priv(dev);
518 if (ag->phy_dev == NULL)
521 spin_lock_irq(&ag->lock);
522 ret = phy_ethtool_ioctl(ag->phy_dev, (void *) ifr->ifr_data);
523 spin_unlock_irq(&ag->lock);
528 (dev->dev_addr, ifr->ifr_data, sizeof(dev->dev_addr)))
534 (ifr->ifr_data, dev->dev_addr, sizeof(dev->dev_addr)))
541 if (ag->phy_dev == NULL)
544 return phy_mii_ioctl(ag->phy_dev, data, cmd);
553 static void ag71xx_oom_timer_handler(unsigned long data)
555 struct net_device *dev = (struct net_device *) data;
556 struct ag71xx *ag = netdev_priv(dev);
558 netif_rx_schedule(dev, &ag->napi);
561 static void ag71xx_tx_timeout(struct net_device *dev)
563 struct ag71xx *ag = netdev_priv(dev);
565 if (netif_msg_tx_err(ag))
566 printk(KERN_DEBUG "%s: tx timeout\n", ag->dev->name);
568 schedule_work(&ag->restart_work);
571 static void ag71xx_restart_work_func(struct work_struct *work)
573 struct ag71xx *ag = container_of(work, struct ag71xx, restart_work);
575 ag71xx_stop(ag->dev);
576 ag71xx_open(ag->dev);
579 static void ag71xx_tx_packets(struct ag71xx *ag)
581 struct ag71xx_ring *ring = &ag->tx_ring;
584 DBG("%s: processing TX ring\n", ag->dev->name);
587 while (ring->dirty != ring->curr) {
588 unsigned int i = ring->dirty % AG71XX_TX_RING_SIZE;
589 struct ag71xx_desc *desc = &ring->descs[i];
590 struct sk_buff *skb = ring->buf[i].skb;
592 if (!ag71xx_desc_empty(desc))
595 ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_PS);
597 ag->dev->stats.tx_bytes += skb->len;
598 ag->dev->stats.tx_packets++;
600 dev_kfree_skb_any(skb);
601 ring->buf[i].skb = NULL;
607 DBG("%s: %d packets sent out\n", ag->dev->name, sent);
609 if ((ring->curr - ring->dirty) < AG71XX_TX_THRES_WAKEUP)
610 netif_wake_queue(ag->dev);
614 static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
616 struct net_device *dev = ag->dev;
617 struct ag71xx_ring *ring = &ag->rx_ring;
620 DBG("%s: rx packets, limit=%d, curr=%u, dirty=%u\n",
621 dev->name, limit, ring->curr, ring->dirty);
623 while (done < limit) {
624 unsigned int i = ring->curr % AG71XX_RX_RING_SIZE;
625 struct ag71xx_desc *desc = &ring->descs[i];
629 if (ag71xx_desc_empty(desc))
632 if ((ring->dirty + AG71XX_RX_RING_SIZE) == ring->curr) {
637 ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR);
639 skb = ring->buf[i].skb;
640 pktlen = ag71xx_desc_pktlen(desc);
641 pktlen -= ETH_FCS_LEN;
643 skb_put(skb, pktlen);
646 skb->ip_summed = CHECKSUM_NONE;
648 dev->last_rx = jiffies;
649 dev->stats.rx_packets++;
650 dev->stats.rx_bytes += pktlen;
652 if (ag71xx_remove_ar8216_header(ag, skb) != 0) {
653 dev->stats.rx_dropped++;
656 skb->protocol = eth_type_trans(skb, dev);
657 netif_receive_skb(skb);
660 ring->buf[i].skb = NULL;
666 ag71xx_ring_rx_refill(ag);
668 DBG("%s: rx finish, curr=%u, dirty=%u, done=%d\n",
669 dev->name, ring->curr, ring->dirty, done);
674 static int ag71xx_poll(struct napi_struct *napi, int limit)
676 struct ag71xx *ag = container_of(napi, struct ag71xx, napi);
677 struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
678 struct net_device *dev = ag->dev;
679 struct ag71xx_ring *rx_ring;
685 ag71xx_tx_packets(ag);
687 DBG("%s: processing RX ring\n", dev->name);
688 done = ag71xx_rx_packets(ag, limit);
690 rx_ring = &ag->rx_ring;
691 if (rx_ring->buf[rx_ring->dirty % AG71XX_RX_RING_SIZE].skb == NULL)
694 status = ag71xx_rr(ag, AG71XX_REG_RX_STATUS);
695 if (unlikely(status & RX_STATUS_OF)) {
696 ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_OF);
697 dev->stats.rx_fifo_errors++;
700 ag71xx_wr(ag, AG71XX_REG_RX_CTRL, RX_CTRL_RXE);
704 if (status & RX_STATUS_PR)
707 status = ag71xx_rr(ag, AG71XX_REG_TX_STATUS);
708 if (status & TX_STATUS_PS)
711 DBG("%s: disable polling mode, done=%d, limit=%d\n",
712 dev->name, done, limit);
714 netif_rx_complete(dev, napi);
716 /* enable interrupts */
717 spin_lock_irqsave(&ag->lock, flags);
718 ag71xx_int_enable(ag, AG71XX_INT_POLL);
719 spin_unlock_irqrestore(&ag->lock, flags);
724 DBG("%s: stay in polling mode, done=%d, limit=%d\n",
725 dev->name, done, limit);
729 if (netif_msg_rx_err(ag))
730 printk(KERN_DEBUG "%s: out of memory\n", dev->name);
732 mod_timer(&ag->oom_timer, jiffies + AG71XX_OOM_REFILL);
733 netif_rx_complete(dev, napi);
737 static irqreturn_t ag71xx_interrupt(int irq, void *dev_id)
739 struct net_device *dev = dev_id;
740 struct ag71xx *ag = netdev_priv(dev);
743 status = ag71xx_rr(ag, AG71XX_REG_INT_STATUS);
744 ag71xx_dump_intr(ag, "raw", status);
746 if (unlikely(!status))
749 if (unlikely(status & AG71XX_INT_ERR)) {
750 if (status & AG71XX_INT_TX_BE) {
751 ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_BE);
752 dev_err(&dev->dev, "TX BUS error\n");
754 if (status & AG71XX_INT_RX_BE) {
755 ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_BE);
756 dev_err(&dev->dev, "RX BUS error\n");
760 if (likely(status & AG71XX_INT_POLL)) {
761 ag71xx_int_disable(ag, AG71XX_INT_POLL);
762 DBG("%s: enable polling mode\n", dev->name);
763 netif_rx_schedule(dev, &ag->napi);
769 static void ag71xx_set_multicast_list(struct net_device *dev)
774 static int __init ag71xx_probe(struct platform_device *pdev)
776 struct net_device *dev;
777 struct resource *res;
779 struct ag71xx_platform_data *pdata;
782 pdata = pdev->dev.platform_data;
784 dev_err(&pdev->dev, "no platform data specified\n");
789 dev = alloc_etherdev(sizeof(*ag));
791 dev_err(&pdev->dev, "alloc_etherdev failed\n");
796 SET_NETDEV_DEV(dev, &pdev->dev);
798 ag = netdev_priv(dev);
801 ag->mii_bus = ag71xx_mdio_bus->mii_bus;
802 ag->msg_enable = netif_msg_init(ag71xx_debug,
803 AG71XX_DEFAULT_MSG_ENABLE);
804 spin_lock_init(&ag->lock);
806 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mac_base");
808 dev_err(&pdev->dev, "no mac_base resource found\n");
813 ag->mac_base = ioremap_nocache(res->start, res->end - res->start + 1);
815 dev_err(&pdev->dev, "unable to ioremap mac_base\n");
820 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mac_base2");
822 dev_err(&pdev->dev, "no mac_base2 resource found\n");
824 goto err_unmap_base1;
827 ag->mac_base2 = ioremap_nocache(res->start, res->end - res->start + 1);
829 dev_err(&pdev->dev, "unable to ioremap mac_base2\n");
831 goto err_unmap_base1;
834 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mii_ctrl");
836 dev_err(&pdev->dev, "no mii_ctrl resource found\n");
838 goto err_unmap_base2;
841 ag->mii_ctrl = ioremap_nocache(res->start, res->end - res->start + 1);
843 dev_err(&pdev->dev, "unable to ioremap mii_ctrl\n");
845 goto err_unmap_base2;
848 dev->irq = platform_get_irq(pdev, 0);
849 err = request_irq(dev->irq, ag71xx_interrupt,
850 IRQF_DISABLED | IRQF_SAMPLE_RANDOM,
853 dev_err(&pdev->dev, "unable to request IRQ %d\n", dev->irq);
854 goto err_unmap_mii_ctrl;
857 dev->base_addr = (unsigned long)ag->mac_base;
858 dev->open = ag71xx_open;
859 dev->stop = ag71xx_stop;
860 dev->hard_start_xmit = ag71xx_hard_start_xmit;
861 dev->set_multicast_list = ag71xx_set_multicast_list;
862 dev->do_ioctl = ag71xx_do_ioctl;
863 dev->ethtool_ops = &ag71xx_ethtool_ops;
865 dev->tx_timeout = ag71xx_tx_timeout;
866 INIT_WORK(&ag->restart_work, ag71xx_restart_work_func);
868 init_timer(&ag->oom_timer);
869 ag->oom_timer.data = (unsigned long) dev;
870 ag->oom_timer.function = ag71xx_oom_timer_handler;
872 memcpy(dev->dev_addr, pdata->mac_addr, ETH_ALEN);
874 netif_napi_add(dev, &ag->napi, ag71xx_poll, AG71XX_NAPI_WEIGHT);
876 err = register_netdev(dev);
878 dev_err(&pdev->dev, "unable to register net device\n");
882 printk(KERN_INFO "%s: Atheros AG71xx at 0x%08lx, irq %d\n",
883 dev->name, dev->base_addr, dev->irq);
885 ag71xx_dump_regs(ag);
889 ag71xx_dump_regs(ag);
891 /* Reset the mdio bus explicitly */
893 mutex_lock(&ag->mii_bus->mdio_lock);
894 ag->mii_bus->reset(ag->mii_bus);
895 mutex_unlock(&ag->mii_bus->mdio_lock);
898 err = ag71xx_phy_connect(ag);
900 goto err_unregister_netdev;
902 platform_set_drvdata(pdev, dev);
906 err_unregister_netdev:
907 unregister_netdev(dev);
909 free_irq(dev->irq, dev);
911 iounmap(ag->mii_ctrl);
913 iounmap(ag->mac_base2);
915 iounmap(ag->mac_base);
919 platform_set_drvdata(pdev, NULL);
923 static int __exit ag71xx_remove(struct platform_device *pdev)
925 struct net_device *dev = platform_get_drvdata(pdev);
928 struct ag71xx *ag = netdev_priv(dev);
930 ag71xx_phy_disconnect(ag);
931 unregister_netdev(dev);
932 free_irq(dev->irq, dev);
933 iounmap(ag->mii_ctrl);
934 iounmap(ag->mac_base2);
935 iounmap(ag->mac_base);
937 platform_set_drvdata(pdev, NULL);
943 static struct platform_driver ag71xx_driver = {
944 .probe = ag71xx_probe,
945 .remove = __exit_p(ag71xx_remove),
947 .name = AG71XX_DRV_NAME,
951 static int __init ag71xx_module_init(void)
955 ret = ag71xx_mdio_driver_init();
959 ret = platform_driver_register(&ag71xx_driver);
966 ag71xx_mdio_driver_exit();
971 static void __exit ag71xx_module_exit(void)
973 platform_driver_unregister(&ag71xx_driver);
974 ag71xx_mdio_driver_exit();
977 module_init(ag71xx_module_init);
978 module_exit(ag71xx_module_exit);
980 MODULE_VERSION(AG71XX_DRV_VERSION);
981 MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
982 MODULE_AUTHOR("Imre Kaloz <kaloz@openwrt.org>");
983 MODULE_LICENSE("GPL v2");
984 MODULE_ALIAS("platform:" AG71XX_DRV_NAME);