1 // SPDX-License-Identifier: GPL-2.0-only
3 * Dave DNET Ethernet Controller driver
5 * Copyright (C) 2008 Dave S.r.l. <www.dave.eu>
6 * Copyright (C) 2009 Ilya Yanok, Emcraft Systems Ltd, <yanok@emcraft.com>
9 #include <linux/module.h>
10 #include <linux/moduleparam.h>
11 #include <linux/kernel.h>
12 #include <linux/types.h>
13 #include <linux/slab.h>
14 #include <linux/delay.h>
15 #include <linux/interrupt.h>
16 #include <linux/netdevice.h>
17 #include <linux/etherdevice.h>
18 #include <linux/dma-mapping.h>
19 #include <linux/platform_device.h>
20 #include <linux/phy.h>
26 /* function for reading internal MAC register */
27 static u16 dnet_readw_mac(struct dnet *bp, u16 reg)
32 dnet_writel(bp, reg, MACREG_ADDR);
34 /* since a read/write op to the MAC is very slow,
35 * we must wait before reading the data */
38 /* read data read from the MAC register */
39 data_read = dnet_readl(bp, MACREG_DATA);
45 /* function for writing internal MAC register */
46 static void dnet_writew_mac(struct dnet *bp, u16 reg, u16 val)
48 /* load data to write */
49 dnet_writel(bp, val, MACREG_DATA);
52 dnet_writel(bp, reg | DNET_INTERNAL_WRITE, MACREG_ADDR);
54 /* since a read/write op to the MAC is very slow,
55 * we must wait before exiting */
59 static void __dnet_set_hwaddr(struct dnet *bp)
63 tmp = be16_to_cpup((__be16 *)bp->dev->dev_addr);
64 dnet_writew_mac(bp, DNET_INTERNAL_MAC_ADDR_0_REG, tmp);
65 tmp = be16_to_cpup((__be16 *)(bp->dev->dev_addr + 2));
66 dnet_writew_mac(bp, DNET_INTERNAL_MAC_ADDR_1_REG, tmp);
67 tmp = be16_to_cpup((__be16 *)(bp->dev->dev_addr + 4));
68 dnet_writew_mac(bp, DNET_INTERNAL_MAC_ADDR_2_REG, tmp);
71 static void dnet_get_hwaddr(struct dnet *bp)
78 * "Note that the MAC address is stored in the registers in Hexadecimal
79 * form. For example, to set the MAC Address to: AC-DE-48-00-00-80
80 * would require writing 0xAC (octet 0) to address 0x0B (high byte of
81 * Mac_addr[15:0]), 0xDE (octet 1) to address 0x0A (Low byte of
82 * Mac_addr[15:0]), 0x48 (octet 2) to address 0x0D (high byte of
83 * Mac_addr[15:0]), 0x00 (octet 3) to address 0x0C (Low byte of
84 * Mac_addr[15:0]), 0x00 (octet 4) to address 0x0F (high byte of
85 * Mac_addr[15:0]), and 0x80 (octet 5) to address * 0x0E (Low byte of
88 tmp = dnet_readw_mac(bp, DNET_INTERNAL_MAC_ADDR_0_REG);
89 *((__be16 *)addr) = cpu_to_be16(tmp);
90 tmp = dnet_readw_mac(bp, DNET_INTERNAL_MAC_ADDR_1_REG);
91 *((__be16 *)(addr + 2)) = cpu_to_be16(tmp);
92 tmp = dnet_readw_mac(bp, DNET_INTERNAL_MAC_ADDR_2_REG);
93 *((__be16 *)(addr + 4)) = cpu_to_be16(tmp);
95 if (is_valid_ether_addr(addr))
96 memcpy(bp->dev->dev_addr, addr, sizeof(addr));
99 static int dnet_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
101 struct dnet *bp = bus->priv;
104 while (!(dnet_readw_mac(bp, DNET_INTERNAL_GMII_MNG_CTL_REG)
105 & DNET_INTERNAL_GMII_MNG_CMD_FIN))
108 /* only 5 bits allowed for phy-addr and reg_offset */
112 /* prepare reg_value for a read */
113 value = (mii_id << 8);
116 /* write control word */
117 dnet_writew_mac(bp, DNET_INTERNAL_GMII_MNG_CTL_REG, value);
119 /* wait for end of transfer */
120 while (!(dnet_readw_mac(bp, DNET_INTERNAL_GMII_MNG_CTL_REG)
121 & DNET_INTERNAL_GMII_MNG_CMD_FIN))
124 value = dnet_readw_mac(bp, DNET_INTERNAL_GMII_MNG_DAT_REG);
126 pr_debug("mdio_read %02x:%02x <- %04x\n", mii_id, regnum, value);
131 static int dnet_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
134 struct dnet *bp = bus->priv;
137 pr_debug("mdio_write %02x:%02x <- %04x\n", mii_id, regnum, value);
139 while (!(dnet_readw_mac(bp, DNET_INTERNAL_GMII_MNG_CTL_REG)
140 & DNET_INTERNAL_GMII_MNG_CMD_FIN))
143 /* prepare for a write operation */
146 /* only 5 bits allowed for phy-addr and reg_offset */
150 /* only 16 bits on data */
153 /* prepare reg_value for a write */
154 tmp |= (mii_id << 8);
157 /* write data to write first */
158 dnet_writew_mac(bp, DNET_INTERNAL_GMII_MNG_DAT_REG, value);
160 /* write control word */
161 dnet_writew_mac(bp, DNET_INTERNAL_GMII_MNG_CTL_REG, tmp);
163 while (!(dnet_readw_mac(bp, DNET_INTERNAL_GMII_MNG_CTL_REG)
164 & DNET_INTERNAL_GMII_MNG_CMD_FIN))
170 static void dnet_handle_link_change(struct net_device *dev)
172 struct dnet *bp = netdev_priv(dev);
173 struct phy_device *phydev = dev->phydev;
175 u32 mode_reg, ctl_reg;
177 int status_change = 0;
179 spin_lock_irqsave(&bp->lock, flags);
181 mode_reg = dnet_readw_mac(bp, DNET_INTERNAL_MODE_REG);
182 ctl_reg = dnet_readw_mac(bp, DNET_INTERNAL_RXTX_CONTROL_REG);
185 if (bp->duplex != phydev->duplex) {
188 ~(DNET_INTERNAL_RXTX_CONTROL_ENABLEHALFDUP);
191 DNET_INTERNAL_RXTX_CONTROL_ENABLEHALFDUP;
193 bp->duplex = phydev->duplex;
197 if (bp->speed != phydev->speed) {
199 switch (phydev->speed) {
201 mode_reg |= DNET_INTERNAL_MODE_GBITEN;
205 mode_reg &= ~DNET_INTERNAL_MODE_GBITEN;
209 "%s: Ack! Speed (%d) is not "
210 "10/100/1000!\n", dev->name,
214 bp->speed = phydev->speed;
218 if (phydev->link != bp->link) {
221 (DNET_INTERNAL_MODE_RXEN | DNET_INTERNAL_MODE_TXEN);
224 ~(DNET_INTERNAL_MODE_RXEN |
225 DNET_INTERNAL_MODE_TXEN);
229 bp->link = phydev->link;
235 dnet_writew_mac(bp, DNET_INTERNAL_RXTX_CONTROL_REG, ctl_reg);
236 dnet_writew_mac(bp, DNET_INTERNAL_MODE_REG, mode_reg);
239 spin_unlock_irqrestore(&bp->lock, flags);
243 printk(KERN_INFO "%s: link up (%d/%s)\n",
244 dev->name, phydev->speed,
245 DUPLEX_FULL == phydev->duplex ? "Full" : "Half");
247 printk(KERN_INFO "%s: link down\n", dev->name);
251 static int dnet_mii_probe(struct net_device *dev)
253 struct dnet *bp = netdev_priv(dev);
254 struct phy_device *phydev = NULL;
256 /* find the first phy */
257 phydev = phy_find_first(bp->mii_bus);
260 printk(KERN_ERR "%s: no PHY found\n", dev->name);
264 /* TODO : add pin_irq */
266 /* attach the mac to the phy */
267 if (bp->capabilities & DNET_HAS_RMII) {
268 phydev = phy_connect(dev, phydev_name(phydev),
269 &dnet_handle_link_change,
270 PHY_INTERFACE_MODE_RMII);
272 phydev = phy_connect(dev, phydev_name(phydev),
273 &dnet_handle_link_change,
274 PHY_INTERFACE_MODE_MII);
277 if (IS_ERR(phydev)) {
278 printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
279 return PTR_ERR(phydev);
282 /* mask with MAC supported features */
283 if (bp->capabilities & DNET_HAS_GIGABIT)
284 phy_set_max_speed(phydev, SPEED_1000);
286 phy_set_max_speed(phydev, SPEED_100);
288 phy_support_asym_pause(phydev);
297 static int dnet_mii_init(struct dnet *bp)
301 bp->mii_bus = mdiobus_alloc();
302 if (bp->mii_bus == NULL)
305 bp->mii_bus->name = "dnet_mii_bus";
306 bp->mii_bus->read = &dnet_mdio_read;
307 bp->mii_bus->write = &dnet_mdio_write;
309 snprintf(bp->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
310 bp->pdev->name, bp->pdev->id);
312 bp->mii_bus->priv = bp;
314 if (mdiobus_register(bp->mii_bus)) {
319 if (dnet_mii_probe(bp->dev) != 0) {
321 goto err_out_unregister_bus;
326 err_out_unregister_bus:
327 mdiobus_unregister(bp->mii_bus);
329 mdiobus_free(bp->mii_bus);
333 /* For Neptune board: LINK1000 as Link LED and TX as activity LED */
334 static int dnet_phy_marvell_fixup(struct phy_device *phydev)
336 return phy_write(phydev, 0x18, 0x4148);
339 static void dnet_update_stats(struct dnet *bp)
341 u32 __iomem *reg = bp->regs + DNET_RX_PKT_IGNR_CNT;
342 u32 *p = &bp->hw_stats.rx_pkt_ignr;
343 u32 *end = &bp->hw_stats.rx_byte + 1;
345 WARN_ON((unsigned long)(end - p - 1) !=
346 (DNET_RX_BYTE_CNT - DNET_RX_PKT_IGNR_CNT) / 4);
348 for (; p < end; p++, reg++)
351 reg = bp->regs + DNET_TX_UNICAST_CNT;
352 p = &bp->hw_stats.tx_unicast;
353 end = &bp->hw_stats.tx_byte + 1;
355 WARN_ON((unsigned long)(end - p - 1) !=
356 (DNET_TX_BYTE_CNT - DNET_TX_UNICAST_CNT) / 4);
358 for (; p < end; p++, reg++)
362 static int dnet_poll(struct napi_struct *napi, int budget)
364 struct dnet *bp = container_of(napi, struct dnet, napi);
365 struct net_device *dev = bp->dev;
367 unsigned int pkt_len;
369 unsigned int *data_ptr;
374 while (npackets < budget) {
376 * break out of while loop if there are no more
379 if (!(dnet_readl(bp, RX_FIFO_WCNT) >> 16))
382 cmd_word = dnet_readl(bp, RX_LEN_FIFO);
383 pkt_len = cmd_word & 0xFFFF;
385 if (cmd_word & 0xDF180000)
386 printk(KERN_ERR "%s packet receive error %x\n",
389 skb = netdev_alloc_skb(dev, pkt_len + 5);
391 /* Align IP on 16 byte boundaries */
394 * 'skb_put()' points to the start of sk_buff
397 data_ptr = skb_put(skb, pkt_len);
398 for (i = 0; i < (pkt_len + 3) >> 2; i++)
399 *data_ptr++ = dnet_readl(bp, RX_DATA_FIFO);
400 skb->protocol = eth_type_trans(skb, dev);
401 netif_receive_skb(skb);
405 "%s: No memory to allocate a sk_buff of "
406 "size %u.\n", dev->name, pkt_len);
409 if (npackets < budget) {
410 /* We processed all packets available. Tell NAPI it can
411 * stop polling then re-enable rx interrupts.
413 napi_complete_done(napi, npackets);
414 int_enable = dnet_readl(bp, INTR_ENB);
415 int_enable |= DNET_INTR_SRC_RX_CMDFIFOAF;
416 dnet_writel(bp, int_enable, INTR_ENB);
422 static irqreturn_t dnet_interrupt(int irq, void *dev_id)
424 struct net_device *dev = dev_id;
425 struct dnet *bp = netdev_priv(dev);
426 u32 int_src, int_enable, int_current;
428 unsigned int handled = 0;
430 spin_lock_irqsave(&bp->lock, flags);
432 /* read and clear the DNET irq (clear on read) */
433 int_src = dnet_readl(bp, INTR_SRC);
434 int_enable = dnet_readl(bp, INTR_ENB);
435 int_current = int_src & int_enable;
437 /* restart the queue if we had stopped it for TX fifo almost full */
438 if (int_current & DNET_INTR_SRC_TX_FIFOAE) {
439 int_enable = dnet_readl(bp, INTR_ENB);
440 int_enable &= ~DNET_INTR_ENB_TX_FIFOAE;
441 dnet_writel(bp, int_enable, INTR_ENB);
442 netif_wake_queue(dev);
446 /* RX FIFO error checking */
448 (DNET_INTR_SRC_RX_CMDFIFOFF | DNET_INTR_SRC_RX_DATAFIFOFF)) {
449 printk(KERN_ERR "%s: RX fifo error %x, irq %x\n", __func__,
450 dnet_readl(bp, RX_STATUS), int_current);
451 /* we can only flush the RX FIFOs */
452 dnet_writel(bp, DNET_SYS_CTL_RXFIFOFLUSH, SYS_CTL);
454 dnet_writel(bp, 0, SYS_CTL);
458 /* TX FIFO error checking */
460 (DNET_INTR_SRC_TX_FIFOFULL | DNET_INTR_SRC_TX_DISCFRM)) {
461 printk(KERN_ERR "%s: TX fifo error %x, irq %x\n", __func__,
462 dnet_readl(bp, TX_STATUS), int_current);
463 /* we can only flush the TX FIFOs */
464 dnet_writel(bp, DNET_SYS_CTL_TXFIFOFLUSH, SYS_CTL);
466 dnet_writel(bp, 0, SYS_CTL);
470 if (int_current & DNET_INTR_SRC_RX_CMDFIFOAF) {
471 if (napi_schedule_prep(&bp->napi)) {
473 * There's no point taking any more interrupts
474 * until we have processed the buffers
476 /* Disable Rx interrupts and schedule NAPI poll */
477 int_enable = dnet_readl(bp, INTR_ENB);
478 int_enable &= ~DNET_INTR_SRC_RX_CMDFIFOAF;
479 dnet_writel(bp, int_enable, INTR_ENB);
480 __napi_schedule(&bp->napi);
486 pr_debug("%s: irq %x remains\n", __func__, int_current);
488 spin_unlock_irqrestore(&bp->lock, flags);
490 return IRQ_RETVAL(handled);
494 static inline void dnet_print_skb(struct sk_buff *skb)
497 printk(KERN_DEBUG PFX "data:");
498 for (k = 0; k < skb->len; k++)
499 printk(" %02x", (unsigned int)skb->data[k]);
503 #define dnet_print_skb(skb) do {} while (0)
506 static netdev_tx_t dnet_start_xmit(struct sk_buff *skb, struct net_device *dev)
509 struct dnet *bp = netdev_priv(dev);
510 unsigned int i, tx_cmd, wrsz;
515 dnet_readl(bp, TX_STATUS);
517 pr_debug("start_xmit: len %u head %p data %p\n",
518 skb->len, skb->head, skb->data);
521 spin_lock_irqsave(&bp->lock, flags);
523 dnet_readl(bp, TX_STATUS);
525 bufp = (unsigned int *)(((unsigned long) skb->data) & ~0x3UL);
526 wrsz = (u32) skb->len + 3;
527 wrsz += ((unsigned long) skb->data) & 0x3;
529 tx_cmd = ((((unsigned long)(skb->data)) & 0x03) << 16) | (u32) skb->len;
531 /* check if there is enough room for the current frame */
532 if (wrsz < (DNET_FIFO_SIZE - dnet_readl(bp, TX_FIFO_WCNT))) {
533 for (i = 0; i < wrsz; i++)
534 dnet_writel(bp, *bufp++, TX_DATA_FIFO);
537 * inform MAC that a packet's written and ready to be
540 dnet_writel(bp, tx_cmd, TX_LEN_FIFO);
543 if (dnet_readl(bp, TX_FIFO_WCNT) > DNET_FIFO_TX_DATA_AF_TH) {
544 netif_stop_queue(dev);
545 dnet_readl(bp, INTR_SRC);
546 irq_enable = dnet_readl(bp, INTR_ENB);
547 irq_enable |= DNET_INTR_ENB_TX_FIFOAE;
548 dnet_writel(bp, irq_enable, INTR_ENB);
551 skb_tx_timestamp(skb);
553 /* free the buffer */
556 spin_unlock_irqrestore(&bp->lock, flags);
561 static void dnet_reset_hw(struct dnet *bp)
563 /* put ts_mac in IDLE state i.e. disable rx/tx */
564 dnet_writew_mac(bp, DNET_INTERNAL_MODE_REG, DNET_INTERNAL_MODE_FCEN);
567 * RX FIFO almost full threshold: only cmd FIFO almost full is
568 * implemented for RX side
570 dnet_writel(bp, DNET_FIFO_RX_CMD_AF_TH, RX_FIFO_TH);
572 * TX FIFO almost empty threshold: only data FIFO almost empty
573 * is implemented for TX side
575 dnet_writel(bp, DNET_FIFO_TX_DATA_AE_TH, TX_FIFO_TH);
577 /* flush rx/tx fifos */
578 dnet_writel(bp, DNET_SYS_CTL_RXFIFOFLUSH | DNET_SYS_CTL_TXFIFOFLUSH,
581 dnet_writel(bp, 0, SYS_CTL);
584 static void dnet_init_hw(struct dnet *bp)
589 __dnet_set_hwaddr(bp);
591 config = dnet_readw_mac(bp, DNET_INTERNAL_RXTX_CONTROL_REG);
593 if (bp->dev->flags & IFF_PROMISC)
594 /* Copy All Frames */
595 config |= DNET_INTERNAL_RXTX_CONTROL_ENPROMISC;
596 if (!(bp->dev->flags & IFF_BROADCAST))
598 config |= DNET_INTERNAL_RXTX_CONTROL_RXMULTICAST;
600 config |= DNET_INTERNAL_RXTX_CONTROL_RXPAUSE |
601 DNET_INTERNAL_RXTX_CONTROL_RXBROADCAST |
602 DNET_INTERNAL_RXTX_CONTROL_DROPCONTROL |
603 DNET_INTERNAL_RXTX_CONTROL_DISCFXFCS;
605 dnet_writew_mac(bp, DNET_INTERNAL_RXTX_CONTROL_REG, config);
607 /* clear irq before enabling them */
608 config = dnet_readl(bp, INTR_SRC);
610 /* enable RX/TX interrupt, recv packet ready interrupt */
611 dnet_writel(bp, DNET_INTR_ENB_GLOBAL_ENABLE | DNET_INTR_ENB_RX_SUMMARY |
612 DNET_INTR_ENB_TX_SUMMARY | DNET_INTR_ENB_RX_FIFOERR |
613 DNET_INTR_ENB_RX_ERROR | DNET_INTR_ENB_RX_FIFOFULL |
614 DNET_INTR_ENB_TX_FIFOFULL | DNET_INTR_ENB_TX_DISCFRM |
615 DNET_INTR_ENB_RX_PKTRDY, INTR_ENB);
618 static int dnet_open(struct net_device *dev)
620 struct dnet *bp = netdev_priv(dev);
622 /* if the phy is not yet register, retry later */
626 napi_enable(&bp->napi);
629 phy_start_aneg(dev->phydev);
631 /* schedule a link state check */
632 phy_start(dev->phydev);
634 netif_start_queue(dev);
639 static int dnet_close(struct net_device *dev)
641 struct dnet *bp = netdev_priv(dev);
643 netif_stop_queue(dev);
644 napi_disable(&bp->napi);
647 phy_stop(dev->phydev);
650 netif_carrier_off(dev);
655 static inline void dnet_print_pretty_hwstats(struct dnet_stats *hwstat)
657 pr_debug("%s\n", __func__);
658 pr_debug("----------------------------- RX statistics "
659 "-------------------------------\n");
660 pr_debug("RX_PKT_IGNR_CNT %-8x\n", hwstat->rx_pkt_ignr);
661 pr_debug("RX_LEN_CHK_ERR_CNT %-8x\n", hwstat->rx_len_chk_err);
662 pr_debug("RX_LNG_FRM_CNT %-8x\n", hwstat->rx_lng_frm);
663 pr_debug("RX_SHRT_FRM_CNT %-8x\n", hwstat->rx_shrt_frm);
664 pr_debug("RX_IPG_VIOL_CNT %-8x\n", hwstat->rx_ipg_viol);
665 pr_debug("RX_CRC_ERR_CNT %-8x\n", hwstat->rx_crc_err);
666 pr_debug("RX_OK_PKT_CNT %-8x\n", hwstat->rx_ok_pkt);
667 pr_debug("RX_CTL_FRM_CNT %-8x\n", hwstat->rx_ctl_frm);
668 pr_debug("RX_PAUSE_FRM_CNT %-8x\n", hwstat->rx_pause_frm);
669 pr_debug("RX_MULTICAST_CNT %-8x\n", hwstat->rx_multicast);
670 pr_debug("RX_BROADCAST_CNT %-8x\n", hwstat->rx_broadcast);
671 pr_debug("RX_VLAN_TAG_CNT %-8x\n", hwstat->rx_vlan_tag);
672 pr_debug("RX_PRE_SHRINK_CNT %-8x\n", hwstat->rx_pre_shrink);
673 pr_debug("RX_DRIB_NIB_CNT %-8x\n", hwstat->rx_drib_nib);
674 pr_debug("RX_UNSUP_OPCD_CNT %-8x\n", hwstat->rx_unsup_opcd);
675 pr_debug("RX_BYTE_CNT %-8x\n", hwstat->rx_byte);
676 pr_debug("----------------------------- TX statistics "
677 "-------------------------------\n");
678 pr_debug("TX_UNICAST_CNT %-8x\n", hwstat->tx_unicast);
679 pr_debug("TX_PAUSE_FRM_CNT %-8x\n", hwstat->tx_pause_frm);
680 pr_debug("TX_MULTICAST_CNT %-8x\n", hwstat->tx_multicast);
681 pr_debug("TX_BRDCAST_CNT %-8x\n", hwstat->tx_brdcast);
682 pr_debug("TX_VLAN_TAG_CNT %-8x\n", hwstat->tx_vlan_tag);
683 pr_debug("TX_BAD_FCS_CNT %-8x\n", hwstat->tx_bad_fcs);
684 pr_debug("TX_JUMBO_CNT %-8x\n", hwstat->tx_jumbo);
685 pr_debug("TX_BYTE_CNT %-8x\n", hwstat->tx_byte);
688 static struct net_device_stats *dnet_get_stats(struct net_device *dev)
691 struct dnet *bp = netdev_priv(dev);
692 struct net_device_stats *nstat = &dev->stats;
693 struct dnet_stats *hwstat = &bp->hw_stats;
695 /* read stats from hardware */
696 dnet_update_stats(bp);
698 /* Convert HW stats into netdevice stats */
699 nstat->rx_errors = (hwstat->rx_len_chk_err +
700 hwstat->rx_lng_frm + hwstat->rx_shrt_frm +
701 /* ignore IGP violation error
702 hwstat->rx_ipg_viol + */
704 hwstat->rx_pre_shrink +
705 hwstat->rx_drib_nib + hwstat->rx_unsup_opcd);
706 nstat->tx_errors = hwstat->tx_bad_fcs;
707 nstat->rx_length_errors = (hwstat->rx_len_chk_err +
709 hwstat->rx_shrt_frm + hwstat->rx_pre_shrink);
710 nstat->rx_crc_errors = hwstat->rx_crc_err;
711 nstat->rx_frame_errors = hwstat->rx_pre_shrink + hwstat->rx_drib_nib;
712 nstat->rx_packets = hwstat->rx_ok_pkt;
713 nstat->tx_packets = (hwstat->tx_unicast +
714 hwstat->tx_multicast + hwstat->tx_brdcast);
715 nstat->rx_bytes = hwstat->rx_byte;
716 nstat->tx_bytes = hwstat->tx_byte;
717 nstat->multicast = hwstat->rx_multicast;
718 nstat->rx_missed_errors = hwstat->rx_pkt_ignr;
720 dnet_print_pretty_hwstats(hwstat);
725 static void dnet_get_drvinfo(struct net_device *dev,
726 struct ethtool_drvinfo *info)
728 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
729 strlcpy(info->bus_info, "0", sizeof(info->bus_info));
732 static const struct ethtool_ops dnet_ethtool_ops = {
733 .get_drvinfo = dnet_get_drvinfo,
734 .get_link = ethtool_op_get_link,
735 .get_ts_info = ethtool_op_get_ts_info,
736 .get_link_ksettings = phy_ethtool_get_link_ksettings,
737 .set_link_ksettings = phy_ethtool_set_link_ksettings,
740 static const struct net_device_ops dnet_netdev_ops = {
741 .ndo_open = dnet_open,
742 .ndo_stop = dnet_close,
743 .ndo_get_stats = dnet_get_stats,
744 .ndo_start_xmit = dnet_start_xmit,
745 .ndo_do_ioctl = phy_do_ioctl_running,
746 .ndo_set_mac_address = eth_mac_addr,
747 .ndo_validate_addr = eth_validate_addr,
750 static int dnet_probe(struct platform_device *pdev)
752 struct resource *res;
753 struct net_device *dev;
755 struct phy_device *phydev;
759 irq = platform_get_irq(pdev, 0);
761 dev = alloc_etherdev(sizeof(*bp));
765 /* TODO: Actually, we have some interesting features... */
768 bp = netdev_priv(dev);
771 platform_set_drvdata(pdev, dev);
772 SET_NETDEV_DEV(dev, &pdev->dev);
774 spin_lock_init(&bp->lock);
776 bp->regs = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
777 if (IS_ERR(bp->regs)) {
778 err = PTR_ERR(bp->regs);
779 goto err_out_free_dev;
783 err = request_irq(dev->irq, dnet_interrupt, 0, DRV_NAME, dev);
785 dev_err(&pdev->dev, "Unable to request IRQ %d (error %d)\n",
787 goto err_out_free_dev;
790 dev->netdev_ops = &dnet_netdev_ops;
791 netif_napi_add(dev, &bp->napi, dnet_poll, 64);
792 dev->ethtool_ops = &dnet_ethtool_ops;
794 dev->base_addr = (unsigned long)bp->regs;
796 bp->capabilities = dnet_readl(bp, VERCAPS) & DNET_CAPS_MASK;
800 if (!is_valid_ether_addr(dev->dev_addr)) {
801 /* choose a random ethernet address */
802 eth_hw_addr_random(dev);
803 __dnet_set_hwaddr(bp);
806 err = register_netdev(dev);
808 dev_err(&pdev->dev, "Cannot register net device, aborting.\n");
809 goto err_out_free_irq;
812 /* register the PHY board fixup (for Marvell 88E1111) */
813 err = phy_register_fixup_for_uid(0x01410cc0, 0xfffffff0,
814 dnet_phy_marvell_fixup);
815 /* we can live without it, so just issue a warning */
817 dev_warn(&pdev->dev, "Cannot register PHY board fixup.\n");
819 err = dnet_mii_init(bp);
821 goto err_out_unregister_netdev;
823 dev_info(&pdev->dev, "Dave DNET at 0x%p (0x%08x) irq %d %pM\n",
824 bp->regs, (unsigned int)res->start, dev->irq, dev->dev_addr);
825 dev_info(&pdev->dev, "has %smdio, %sirq, %sgigabit, %sdma\n",
826 (bp->capabilities & DNET_HAS_MDIO) ? "" : "no ",
827 (bp->capabilities & DNET_HAS_IRQ) ? "" : "no ",
828 (bp->capabilities & DNET_HAS_GIGABIT) ? "" : "no ",
829 (bp->capabilities & DNET_HAS_DMA) ? "" : "no ");
830 phydev = dev->phydev;
831 phy_attached_info(phydev);
835 err_out_unregister_netdev:
836 unregister_netdev(dev);
838 free_irq(dev->irq, dev);
844 static int dnet_remove(struct platform_device *pdev)
847 struct net_device *dev;
850 dev = platform_get_drvdata(pdev);
853 bp = netdev_priv(dev);
855 phy_disconnect(dev->phydev);
856 mdiobus_unregister(bp->mii_bus);
857 mdiobus_free(bp->mii_bus);
858 unregister_netdev(dev);
859 free_irq(dev->irq, dev);
866 static struct platform_driver dnet_driver = {
868 .remove = dnet_remove,
874 module_platform_driver(dnet_driver);
876 MODULE_LICENSE("GPL");
877 MODULE_DESCRIPTION("Dave DNET Ethernet driver");
878 MODULE_AUTHOR("Ilya Yanok <yanok@emcraft.com>, "
879 "Matteo Vit <matteo.vit@dave.eu>");