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Date: Sun, 10 Aug 2014 18:14:31 +0200
From: Romain Perier <romain.perier@...il.com>
To: Heiko Stübner <heiko@...ech.de>
CC: davem@...emloft.net, max.schwarz@...ine.de, b.galvani@...il.com,
eric.dumazet@...il.com, netdev@...r.kernel.org, arnd@...db.de
Subject: Re: [PATCH 1/2] ethernet: arc: Add support for specific SoC glue
layer device tree bindings
Hi Heiko,
Le 10/08/2014 14:03, Heiko Stübner a écrit :
> Hi Romain,
>
> [I've added Arnd, because he seemed interested in this when we talked about it
> in IRC]
>
> Am Freitag, 8. August 2014, 12:27:54 schrieb Romain Perier:
>> Some platforms have special bank registers which might be used to select
>> the correct clock or the right mode for Media Indepent Interface
>> controllers. Sometimes, it is also required to activate vcc regulators in
>> the right order to supply the ethernet controller at the right time. This
>> patch is a refactoring of the arc-emac device driver, it adds a new
>> software architecture design which allows to add specific platform glue
>> layer. Each platform has now its own module which performs custom
>> initialization and remove for the target and then calls to the core driver.
>>
>> Signed-off-by: Romain Perier <romain.perier@...il.com>
> mixing functional changes with general renames makes everything really hard to
> review. At most, you should have them separated into two patches.
Mhhh... yeah, I will split this into different patches.
>
> I'm not sure how I personally feel about renaming all the core functions for
> this. In my mind they could also simply keep their current naming, as the
> whole IP is supposed to not have to many implementations except the arc (and
> Rockchip one).
it would be really confusing... I don't want to put the arc logic into
emac_main.c. So we would have emac_arc.c module containing
"emac_arc_<foo>" functions or "arc_<foo>" and the core emac_main.c which
would contain "arc_emac_<foo>" functions ?
That's important to have a consistency naming, imho.
>
>
> [...]
>
>> diff --git a/drivers/net/ethernet/arc/emac_arc.c
>> b/drivers/net/ethernet/arc/emac_arc.c new file mode 100644
>> index 0000000..80ebb52
>> --- /dev/null
>> +++ b/drivers/net/ethernet/arc/emac_arc.c
>> @@ -0,0 +1,79 @@
>> +/**
>> + * emac_arc.c - ARC EMAC specific glue layer
>> + *
>> + * Copyright (C) 2014 Romain Perier
>> + *
>> + * Romain Perier <romain.perier@...il.com>
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> + * it under the terms of the GNU General Public License as published by
>> + * the Free Software Foundation; either version 2 of the License, or
>> + * (at your option) any later version.
>> + *
>> + * This program is distributed in the hope that it will be useful,
>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>> + * GNU General Public License for more details.
>> + */
>> +
>> +#include "emac.h"
>> +#include <linux/of_net.h>
>> +#include <linux/platform_device.h>
>> +#include <linux/module.h>
>> +#include <linux/clk.h>
>> +
>> +#define DRV_NAME "arc_emac"
>> +#define DRV_VERSION "1.0"
>> +
>> +static int arc_emac_probe(struct platform_device *pdev)
>> +{
>> + struct emac_platform_data *emac_plat_data = NULL;
>> + struct device *dev = &pdev->dev;
>> + int ret = 0;
>> +
>> + emac_plat_data = devm_kzalloc(dev, sizeof(*emac_plat_data), GFP_KERNEL);
>> + if (!emac_plat_data)
>> + return -ENOMEM;
>> + emac_plat_data->name = DRV_NAME;
>> + emac_plat_data->version = DRV_VERSION;
>> + emac_plat_data->set_mac_speed = NULL;
>> + emac_plat_data->priv = emac;
>> +
>> + emac_plat_data->interface = of_get_phy_mode(dev->of_node);
> the original probe function, had an unconditional default value of
> PHY_INTERFACE_MODE_MII . So you should handle the of_get_phy_mode value as
> optional to keep compatibility:
>
> emac_plat_data->interface = of_get_phy_mode(dev->of_node);
> if (emac_plat_data->interface < 0)
> emac_plat_data->interface = PHY_INTERFACE_MODE_MII;
Ok noted, thanks.
Romain
>
>
> Heiko
>
>> +
>> + emac_plat_data->clk = of_clk_get(dev->of_node, 0);
>> + if (IS_ERR(emac_plat_data->clk)) {
>> + dev_err(dev, "failed to retrieve clock from device tree\n");
>> + return PTR_ERR_OR_ZERO(emac_plat_data->clk);
>> + }
>> +
>> + return emac_drv_probe(dev, emac_plat_data);
>> +}
>> +
>> +static int arc_emac_remove(struct platform_device *pdev)
>> +{
>> + struct net_device *ndev = dev_get_drvdata(&pdev->dev);
>> +
>> + return emac_drv_remove(ndev);
>> +}
>> +
>> +static const struct of_device_id arc_emac_dt_ids[] = {
>> + { .compatible = "snps,arc-emac" },
>> + { /* Sentinel */ }
>> +};
>> +
>> +static struct platform_driver arc_emac_driver = {
>> + .probe = arc_emac_probe,
>> + .remove = arc_emac_remove,
>> + .driver = {
>> + .name = DRV_NAME,
>> + .owner = THIS_MODULE,
>> + .of_match_table = arc_emac_dt_ids,
>> + },
>> +};
>> +
>> +module_platform_driver(arc_emac_driver);
>> +
>> +MODULE_AUTHOR("Romain Perier <romain.perier@...il.com>");
>> +MODULE_DESCRIPTION("ARC EMAC driver");
>> +MODULE_LICENSE("GPL");
>> diff --git a/drivers/net/ethernet/arc/emac_main.c
>> b/drivers/net/ethernet/arc/emac_main.c index 18e2fac..ce04890 100644
>> --- a/drivers/net/ethernet/arc/emac_main.c
>> +++ b/drivers/net/ethernet/arc/emac_main.c
>> @@ -11,6 +11,7 @@
>> * Amit Bhor
>> * Sameer Dhavale
>> * Vineet Gupta
>> + * Romain Perier
>> */
>>
>> #include <linux/crc32.h>
>> @@ -26,19 +27,17 @@
>>
>> #include "emac.h"
>>
>> -#define DRV_NAME "arc_emac"
>> -#define DRV_VERSION "1.0"
>>
>> /**
>> - * arc_emac_adjust_link - Adjust the PHY link duplex.
>> + * emac_adjust_link - Adjust the PHY link duplex.
>> * @ndev: Pointer to the net_device structure.
>> *
>> * This function is called to change the duplex setting after auto
>> negotiation * is done by the PHY.
>> */
>> -static void arc_emac_adjust_link(struct net_device *ndev)
>> +static void emac_adjust_link(struct net_device *ndev)
>> {
>> - struct arc_emac_priv *priv = netdev_priv(ndev);
>> + struct emac_priv *priv = netdev_priv(ndev);
>> struct phy_device *phy_dev = priv->phy_dev;
>> unsigned int reg, state_changed = 0;
>>
>> @@ -50,17 +49,19 @@ static void arc_emac_adjust_link(struct net_device
>> *ndev) if (priv->speed != phy_dev->speed) {
>> priv->speed = phy_dev->speed;
>> state_changed = 1;
>> + if (priv->plat_data->set_mac_speed)
>> + priv->plat_data->set_mac_speed(priv->plat_data->priv, priv-
>> speed);
>> }
>>
>> if (priv->duplex != phy_dev->duplex) {
>> - reg = arc_reg_get(priv, R_CTRL);
>> + reg = emac_reg_get(priv, R_CTRL);
>>
>> if (DUPLEX_FULL == phy_dev->duplex)
>> reg |= ENFL_MASK;
>> else
>> reg &= ~ENFL_MASK;
>>
>> - arc_reg_set(priv, R_CTRL, reg);
>> + emac_reg_set(priv, R_CTRL, reg);
>> priv->duplex = phy_dev->duplex;
>> state_changed = 1;
>> }
>> @@ -70,7 +71,7 @@ static void arc_emac_adjust_link(struct net_device *ndev)
>> }
>>
>> /**
>> - * arc_emac_get_settings - Get PHY settings.
>> + * emac_get_settings - Get PHY settings.
>> * @ndev: Pointer to net_device structure.
>> * @cmd: Pointer to ethtool_cmd structure.
>> *
>> @@ -79,16 +80,16 @@ static void arc_emac_adjust_link(struct net_device
>> *ndev) * relevant PHY ethtool API to get the PHY settings.
>> * Issue "ethtool ethX" under linux prompt to execute this function.
>> */
>> -static int arc_emac_get_settings(struct net_device *ndev,
>> +static int emac_get_settings(struct net_device *ndev,
>> struct ethtool_cmd *cmd)
>> {
>> - struct arc_emac_priv *priv = netdev_priv(ndev);
>> + struct emac_priv *priv = netdev_priv(ndev);
>>
>> return phy_ethtool_gset(priv->phy_dev, cmd);
>> }
>>
>> /**
>> - * arc_emac_set_settings - Set PHY settings as passed in the argument.
>> + * emac_set_settings - Set PHY settings as passed in the argument.
>> * @ndev: Pointer to net_device structure.
>> * @cmd: Pointer to ethtool_cmd structure.
>> *
>> @@ -98,10 +99,10 @@ static int arc_emac_get_settings(struct net_device
>> *ndev, * Issue e.g. "ethtool -s ethX speed 1000" under linux prompt to
>> execute this * function.
>> */
>> -static int arc_emac_set_settings(struct net_device *ndev,
>> - struct ethtool_cmd *cmd)
>> +static int emac_set_settings(struct net_device *ndev,
>> + struct ethtool_cmd *cmd)
>> {
>> - struct arc_emac_priv *priv = netdev_priv(ndev);
>> + struct emac_priv *priv = netdev_priv(ndev);
>>
>> if (!capable(CAP_NET_ADMIN))
>> return -EPERM;
>> @@ -110,42 +111,44 @@ static int arc_emac_set_settings(struct net_device
>> *ndev, }
>>
>> /**
>> - * arc_emac_get_drvinfo - Get EMAC driver information.
>> + * emac_get_drvinfo - Get EMAC driver information.
>> * @ndev: Pointer to net_device structure.
>> * @info: Pointer to ethtool_drvinfo structure.
>> *
>> * This implements ethtool command for getting the driver information.
>> * Issue "ethtool -i ethX" under linux prompt to execute this function.
>> */
>> -static void arc_emac_get_drvinfo(struct net_device *ndev,
>> +static void emac_get_drvinfo(struct net_device *ndev,
>> struct ethtool_drvinfo *info)
>> {
>> - strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
>> - strlcpy(info->version, DRV_VERSION, sizeof(info->version));
>> + struct emac_priv *priv = netdev_priv(ndev);
>> +
>> + strlcpy(info->driver, priv->plat_data->name, sizeof(info->driver));
>> + strlcpy(info->version, priv->plat_data->version, sizeof(info->version));
>> }
>>
>> -static const struct ethtool_ops arc_emac_ethtool_ops = {
>> - .get_settings = arc_emac_get_settings,
>> - .set_settings = arc_emac_set_settings,
>> - .get_drvinfo = arc_emac_get_drvinfo,
>> +static const struct ethtool_ops emac_ethtool_ops = {
>> + .get_settings = emac_get_settings,
>> + .set_settings = emac_set_settings,
>> + .get_drvinfo = emac_get_drvinfo,
>> .get_link = ethtool_op_get_link,
>> };
>>
>> #define FIRST_OR_LAST_MASK (FIRST_MASK | LAST_MASK)
>>
>> /**
>> - * arc_emac_tx_clean - clears processed by EMAC Tx BDs.
>> + * emac_tx_clean - clears processed by EMAC Tx BDs.
>> * @ndev: Pointer to the network device.
>> */
>> -static void arc_emac_tx_clean(struct net_device *ndev)
>> +static void emac_tx_clean(struct net_device *ndev)
>> {
>> - struct arc_emac_priv *priv = netdev_priv(ndev);
>> + struct emac_priv *priv = netdev_priv(ndev);
>> struct net_device_stats *stats = &priv->stats;
>> unsigned int i;
>>
>> for (i = 0; i < TX_BD_NUM; i++) {
>> unsigned int *txbd_dirty = &priv->txbd_dirty;
>> - struct arc_emac_bd *txbd = &priv->txbd[*txbd_dirty];
>> + struct emac_bd *txbd = &priv->txbd[*txbd_dirty];
>> struct buffer_state *tx_buff = &priv->tx_buff[*txbd_dirty];
>> struct sk_buff *skb = tx_buff->skb;
>> unsigned int info = le32_to_cpu(txbd->info);
>> @@ -187,7 +190,7 @@ static void arc_emac_tx_clean(struct net_device *ndev)
>> }
>>
>> /**
>> - * arc_emac_rx - processing of Rx packets.
>> + * emac_rx - processing of Rx packets.
>> * @ndev: Pointer to the network device.
>> * @budget: How many BDs to process on 1 call.
>> *
>> @@ -195,16 +198,16 @@ static void arc_emac_tx_clean(struct net_device *ndev)
>> *
>> * Iterate through Rx BDs and deliver received packages to upper layer.
>> */
>> -static int arc_emac_rx(struct net_device *ndev, int budget)
>> +static int emac_rx(struct net_device *ndev, int budget)
>> {
>> - struct arc_emac_priv *priv = netdev_priv(ndev);
>> + struct emac_priv *priv = netdev_priv(ndev);
>> unsigned int work_done;
>>
>> for (work_done = 0; work_done < budget; work_done++) {
>> unsigned int *last_rx_bd = &priv->last_rx_bd;
>> struct net_device_stats *stats = &priv->stats;
>> struct buffer_state *rx_buff = &priv->rx_buff[*last_rx_bd];
>> - struct arc_emac_bd *rxbd = &priv->rxbd[*last_rx_bd];
>> + struct emac_bd *rxbd = &priv->rxbd[*last_rx_bd];
>> unsigned int pktlen, info = le32_to_cpu(rxbd->info);
>> struct sk_buff *skb;
>> dma_addr_t addr;
>> @@ -281,55 +284,55 @@ static int arc_emac_rx(struct net_device *ndev, int
>> budget) }
>>
>> /**
>> - * arc_emac_poll - NAPI poll handler.
>> + * emac_poll - NAPI poll handler.
>> * @napi: Pointer to napi_struct structure.
>> * @budget: How many BDs to process on 1 call.
>> *
>> * returns: Number of processed BDs
>> */
>> -static int arc_emac_poll(struct napi_struct *napi, int budget)
>> +static int emac_poll(struct napi_struct *napi, int budget)
>> {
>> struct net_device *ndev = napi->dev;
>> - struct arc_emac_priv *priv = netdev_priv(ndev);
>> + struct emac_priv *priv = netdev_priv(ndev);
>> unsigned int work_done;
>>
>> - arc_emac_tx_clean(ndev);
>> + emac_tx_clean(ndev);
>>
>> - work_done = arc_emac_rx(ndev, budget);
>> + work_done = emac_rx(ndev, budget);
>> if (work_done < budget) {
>> napi_complete(napi);
>> - arc_reg_or(priv, R_ENABLE, RXINT_MASK);
>> + emac_reg_or(priv, R_ENABLE, RXINT_MASK);
>> }
>>
>> return work_done;
>> }
>>
>> /**
>> - * arc_emac_intr - Global interrupt handler for EMAC.
>> + * emac_intr - Global interrupt handler for EMAC.
>> * @irq: irq number.
>> * @dev_instance: device instance.
>> *
>> * returns: IRQ_HANDLED for all cases.
>> *
>> - * ARC EMAC has only 1 interrupt line, and depending on bits raised in
>> + * EMAC has only 1 interrupt line, and depending on bits raised in
>> * STATUS register we may tell what is a reason for interrupt to fire.
>> */
>> -static irqreturn_t arc_emac_intr(int irq, void *dev_instance)
>> +static irqreturn_t emac_intr(int irq, void *dev_instance)
>> {
>> struct net_device *ndev = dev_instance;
>> - struct arc_emac_priv *priv = netdev_priv(ndev);
>> + struct emac_priv *priv = netdev_priv(ndev);
>> struct net_device_stats *stats = &priv->stats;
>> unsigned int status;
>>
>> - status = arc_reg_get(priv, R_STATUS);
>> + status = emac_reg_get(priv, R_STATUS);
>> status &= ~MDIO_MASK;
>>
>> /* Reset all flags except "MDIO complete" */
>> - arc_reg_set(priv, R_STATUS, status);
>> + emac_reg_set(priv, R_STATUS, status);
>>
>> if (status & RXINT_MASK) {
>> if (likely(napi_schedule_prep(&priv->napi))) {
>> - arc_reg_clr(priv, R_ENABLE, RXINT_MASK);
>> + emac_reg_clr(priv, R_ENABLE, RXINT_MASK);
>> __napi_schedule(&priv->napi);
>> }
>> }
>> @@ -364,16 +367,16 @@ static irqreturn_t arc_emac_intr(int irq, void
>> *dev_instance) }
>>
>> #ifdef CONFIG_NET_POLL_CONTROLLER
>> -static void arc_emac_poll_controller(struct net_device *dev)
>> +static void emac_poll_controller(struct net_device *dev)
>> {
>> disable_irq(dev->irq);
>> - arc_emac_intr(dev->irq, dev);
>> + emac_intr(dev->irq, dev);
>> enable_irq(dev->irq);
>> }
>> #endif
>>
>> /**
>> - * arc_emac_open - Open the network device.
>> + * emac_open - Open the network device.
>> * @ndev: Pointer to the network device.
>> *
>> * returns: 0, on success or non-zero error value on failure.
>> @@ -382,9 +385,9 @@ static void arc_emac_poll_controller(struct net_device
>> *dev) * for the EMAC device and starts the Tx queue.
>> * It also connects to the phy device.
>> */
>> -static int arc_emac_open(struct net_device *ndev)
>> +static int emac_open(struct net_device *ndev)
>> {
>> - struct arc_emac_priv *priv = netdev_priv(ndev);
>> + struct emac_priv *priv = netdev_priv(ndev);
>> struct phy_device *phy_dev = priv->phy_dev;
>> int i;
>>
>> @@ -399,7 +402,7 @@ static int arc_emac_open(struct net_device *ndev)
>> for (i = 0; i < RX_BD_NUM; i++) {
>> dma_addr_t addr;
>> unsigned int *last_rx_bd = &priv->last_rx_bd;
>> - struct arc_emac_bd *rxbd = &priv->rxbd[*last_rx_bd];
>> + struct emac_bd *rxbd = &priv->rxbd[*last_rx_bd];
>> struct buffer_state *rx_buff = &priv->rx_buff[*last_rx_bd];
>>
>> rx_buff->skb = netdev_alloc_skb_ip_align(ndev,
>> @@ -432,18 +435,18 @@ static int arc_emac_open(struct net_device *ndev)
>> memset(priv->txbd, 0, TX_RING_SZ);
>>
>> /* Initialize logical address filter */
>> - arc_reg_set(priv, R_LAFL, 0);
>> - arc_reg_set(priv, R_LAFH, 0);
>> + emac_reg_set(priv, R_LAFL, 0);
>> + emac_reg_set(priv, R_LAFH, 0);
>>
>> /* Set BD ring pointers for device side */
>> - arc_reg_set(priv, R_RX_RING, (unsigned int)priv->rxbd_dma);
>> - arc_reg_set(priv, R_TX_RING, (unsigned int)priv->txbd_dma);
>> + emac_reg_set(priv, R_RX_RING, (unsigned int)priv->rxbd_dma);
>> + emac_reg_set(priv, R_TX_RING, (unsigned int)priv->txbd_dma);
>>
>> /* Enable interrupts */
>> - arc_reg_set(priv, R_ENABLE, RXINT_MASK | ERR_MASK);
>> + emac_reg_set(priv, R_ENABLE, RXINT_MASK | ERR_MASK);
>>
>> /* Set CONTROL */
>> - arc_reg_set(priv, R_CTRL,
>> + emac_reg_set(priv, R_CTRL,
>> (RX_BD_NUM << 24) | /* RX BD table length */
>> (TX_BD_NUM << 16) | /* TX BD table length */
>> TXRN_MASK | RXRN_MASK);
>> @@ -451,7 +454,7 @@ static int arc_emac_open(struct net_device *ndev)
>> napi_enable(&priv->napi);
>>
>> /* Enable EMAC */
>> - arc_reg_or(priv, R_CTRL, EN_MASK);
>> + emac_reg_or(priv, R_CTRL, EN_MASK);
>>
>> phy_start_aneg(priv->phy_dev);
>>
>> @@ -461,24 +464,24 @@ static int arc_emac_open(struct net_device *ndev)
>> }
>>
>> /**
>> - * arc_emac_set_rx_mode - Change the receive filtering mode.
>> + * emac_set_rx_mode - Change the receive filtering mode.
>> * @ndev: Pointer to the network device.
>> *
>> * This function enables/disables promiscuous or all-multicast mode
>> * and updates the multicast filtering list of the network device.
>> */
>> -static void arc_emac_set_rx_mode(struct net_device *ndev)
>> +static void emac_set_rx_mode(struct net_device *ndev)
>> {
>> - struct arc_emac_priv *priv = netdev_priv(ndev);
>> + struct emac_priv *priv = netdev_priv(ndev);
>>
>> if (ndev->flags & IFF_PROMISC) {
>> - arc_reg_or(priv, R_CTRL, PROM_MASK);
>> + emac_reg_or(priv, R_CTRL, PROM_MASK);
>> } else {
>> - arc_reg_clr(priv, R_CTRL, PROM_MASK);
>> + emac_reg_clr(priv, R_CTRL, PROM_MASK);
>>
>> if (ndev->flags & IFF_ALLMULTI) {
>> - arc_reg_set(priv, R_LAFL, ~0);
>> - arc_reg_set(priv, R_LAFH, ~0);
>> + emac_reg_set(priv, R_LAFL, ~0);
>> + emac_reg_set(priv, R_LAFH, ~0);
>> } else {
>> struct netdev_hw_addr *ha;
>> unsigned int filter[2] = { 0, 0 };
>> @@ -489,52 +492,52 @@ static void arc_emac_set_rx_mode(struct net_device
>> *ndev) filter[bit >> 5] |= 1 << (bit & 31);
>> }
>>
>> - arc_reg_set(priv, R_LAFL, filter[0]);
>> - arc_reg_set(priv, R_LAFH, filter[1]);
>> + emac_reg_set(priv, R_LAFL, filter[0]);
>> + emac_reg_set(priv, R_LAFH, filter[1]);
>> }
>> }
>> }
>>
>> /**
>> - * arc_emac_stop - Close the network device.
>> + * emac_stop - Close the network device.
>> * @ndev: Pointer to the network device.
>> *
>> * This function stops the Tx queue, disables interrupts and frees the IRQ
>> for * the EMAC device.
>> * It also disconnects the PHY device associated with the EMAC device.
>> */
>> -static int arc_emac_stop(struct net_device *ndev)
>> +static int emac_stop(struct net_device *ndev)
>> {
>> - struct arc_emac_priv *priv = netdev_priv(ndev);
>> + struct emac_priv *priv = netdev_priv(ndev);
>>
>> napi_disable(&priv->napi);
>> netif_stop_queue(ndev);
>>
>> /* Disable interrupts */
>> - arc_reg_clr(priv, R_ENABLE, RXINT_MASK | ERR_MASK);
>> + emac_reg_clr(priv, R_ENABLE, RXINT_MASK | ERR_MASK);
>>
>> /* Disable EMAC */
>> - arc_reg_clr(priv, R_CTRL, EN_MASK);
>> + emac_reg_clr(priv, R_CTRL, EN_MASK);
>>
>> return 0;
>> }
>>
>> /**
>> - * arc_emac_stats - Get system network statistics.
>> + * emac_stats - Get system network statistics.
>> * @ndev: Pointer to net_device structure.
>> *
>> * Returns the address of the device statistics structure.
>> * Statistics are updated in interrupt handler.
>> */
>> -static struct net_device_stats *arc_emac_stats(struct net_device *ndev)
>> +static struct net_device_stats *emac_stats(struct net_device *ndev)
>> {
>> - struct arc_emac_priv *priv = netdev_priv(ndev);
>> + struct emac_priv *priv = netdev_priv(ndev);
>> struct net_device_stats *stats = &priv->stats;
>> unsigned long miss, rxerr;
>> u8 rxcrc, rxfram, rxoflow;
>>
>> - rxerr = arc_reg_get(priv, R_RXERR);
>> - miss = arc_reg_get(priv, R_MISS);
>> + rxerr = emac_reg_get(priv, R_RXERR);
>> + miss = emac_reg_get(priv, R_MISS);
>>
>> rxcrc = rxerr;
>> rxfram = rxerr >> 8;
>> @@ -552,7 +555,7 @@ static struct net_device_stats *arc_emac_stats(struct
>> net_device *ndev) }
>>
>> /**
>> - * arc_emac_tx - Starts the data transmission.
>> + * emac_tx - Starts the data transmission.
>> * @skb: sk_buff pointer that contains data to be Transmitted.
>> * @ndev: Pointer to net_device structure.
>> *
>> @@ -561,9 +564,9 @@ static struct net_device_stats *arc_emac_stats(struct
>> net_device *ndev) *
>> * This function is invoked from upper layers to initiate transmission.
>> */
>> -static int arc_emac_tx(struct sk_buff *skb, struct net_device *ndev)
>> +static int emac_tx(struct sk_buff *skb, struct net_device *ndev)
>> {
>> - struct arc_emac_priv *priv = netdev_priv(ndev);
>> + struct emac_priv *priv = netdev_priv(ndev);
>> unsigned int len, *txbd_curr = &priv->txbd_curr;
>> struct net_device_stats *stats = &priv->stats;
>> __le32 *info = &priv->txbd[*txbd_curr].info;
>> @@ -614,25 +617,25 @@ static int arc_emac_tx(struct sk_buff *skb, struct
>> net_device *ndev) if (unlikely((le32_to_cpu(*info) & OWN_MASK) ==
>> FOR_EMAC))
>> netif_stop_queue(ndev);
>>
>> - arc_reg_set(priv, R_STATUS, TXPL_MASK);
>> + emac_reg_set(priv, R_STATUS, TXPL_MASK);
>>
>> return NETDEV_TX_OK;
>> }
>>
>> -static void arc_emac_set_address_internal(struct net_device *ndev)
>> +static void emac_set_address_internal(struct net_device *ndev)
>> {
>> - struct arc_emac_priv *priv = netdev_priv(ndev);
>> + struct emac_priv *priv = netdev_priv(ndev);
>> unsigned int addr_low, addr_hi;
>>
>> addr_low = le32_to_cpu(*(__le32 *) &ndev->dev_addr[0]);
>> addr_hi = le16_to_cpu(*(__le16 *) &ndev->dev_addr[4]);
>>
>> - arc_reg_set(priv, R_ADDRL, addr_low);
>> - arc_reg_set(priv, R_ADDRH, addr_hi);
>> + emac_reg_set(priv, R_ADDRL, addr_low);
>> + emac_reg_set(priv, R_ADDRH, addr_hi);
>> }
>>
>> /**
>> - * arc_emac_set_address - Set the MAC address for this device.
>> + * emac_set_address - Set the MAC address for this device.
>> * @ndev: Pointer to net_device structure.
>> * @p: 6 byte Address to be written as MAC address.
>> *
>> @@ -642,7 +645,7 @@ static void arc_emac_set_address_internal(struct
>> net_device *ndev) * returns: -EBUSY if the net device is busy or 0 if the
>> address is set * successfully.
>> */
>> -static int arc_emac_set_address(struct net_device *ndev, void *p)
>> +static int emac_set_address(struct net_device *ndev, void *p)
>> {
>> struct sockaddr *addr = p;
>>
>> @@ -654,141 +657,129 @@ static int arc_emac_set_address(struct net_device
>> *ndev, void *p)
>>
>> memcpy(ndev->dev_addr, addr->sa_data, ndev->addr_len);
>>
>> - arc_emac_set_address_internal(ndev);
>> + emac_set_address_internal(ndev);
>>
>> return 0;
>> }
>>
>> -static const struct net_device_ops arc_emac_netdev_ops = {
>> - .ndo_open = arc_emac_open,
>> - .ndo_stop = arc_emac_stop,
>> - .ndo_start_xmit = arc_emac_tx,
>> - .ndo_set_mac_address = arc_emac_set_address,
>> - .ndo_get_stats = arc_emac_stats,
>> - .ndo_set_rx_mode = arc_emac_set_rx_mode,
>> +static const struct net_device_ops emac_netdev_ops = {
>> + .ndo_open = emac_open,
>> + .ndo_stop = emac_stop,
>> + .ndo_start_xmit = emac_tx,
>> + .ndo_set_mac_address = emac_set_address,
>> + .ndo_get_stats = emac_stats,
>> + .ndo_set_rx_mode = emac_set_rx_mode,
>> #ifdef CONFIG_NET_POLL_CONTROLLER
>> - .ndo_poll_controller = arc_emac_poll_controller,
>> + .ndo_poll_controller = emac_poll_controller,
>> #endif
>> };
>>
>> -static int arc_emac_probe(struct platform_device *pdev)
>> +int emac_drv_probe(struct device *dev, const struct emac_platform_data
>> *plat_data) {
>> struct resource res_regs;
>> struct device_node *phy_node;
>> - struct arc_emac_priv *priv;
>> + struct emac_priv *priv;
>> struct net_device *ndev;
>> const char *mac_addr;
>> unsigned int id, clock_frequency, irq;
>> int err;
>>
>> - if (!pdev->dev.of_node)
>> - return -ENODEV;
>> -
>> /* Get PHY from device tree */
>> - phy_node = of_parse_phandle(pdev->dev.of_node, "phy", 0);
>> + phy_node = of_parse_phandle(dev->of_node, "phy", 0);
>> if (!phy_node) {
>> - dev_err(&pdev->dev, "failed to retrieve phy description from device
>> tree\n"); + dev_err(dev, "failed to retrieve phy description from
> device
>> tree\n"); return -ENODEV;
>> }
>>
>> /* Get EMAC registers base address from device tree */
>> - err = of_address_to_resource(pdev->dev.of_node, 0, &res_regs);
>> + err = of_address_to_resource(dev->of_node, 0, &res_regs);
>> if (err) {
>> - dev_err(&pdev->dev, "failed to retrieve registers base from device
>> tree\n"); + dev_err(dev, "failed to retrieve registers base from
> device
>> tree\n"); return -ENODEV;
>> }
>>
>> /* Get IRQ from device tree */
>> - irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
>> + irq = irq_of_parse_and_map(dev->of_node, 0);
>> if (!irq) {
>> - dev_err(&pdev->dev, "failed to retrieve <irq> value from device
> tree\n");
>> + dev_err(dev, "failed to retrieve <irq> value from device tree\n");
>> return -ENODEV;
>> }
>>
>> - ndev = alloc_etherdev(sizeof(struct arc_emac_priv));
>> + ndev = alloc_etherdev(sizeof(struct emac_priv));
>> if (!ndev)
>> return -ENOMEM;
>>
>> - platform_set_drvdata(pdev, ndev);
>> - SET_NETDEV_DEV(ndev, &pdev->dev);
>> + dev_set_drvdata(dev, ndev);
>> + SET_NETDEV_DEV(ndev, dev);
>>
>> - ndev->netdev_ops = &arc_emac_netdev_ops;
>> - ndev->ethtool_ops = &arc_emac_ethtool_ops;
>> + ndev->netdev_ops = &emac_netdev_ops;
>> + ndev->ethtool_ops = &emac_ethtool_ops;
>> ndev->watchdog_timeo = TX_TIMEOUT;
>> /* FIXME :: no multicast support yet */
>> ndev->flags &= ~IFF_MULTICAST;
>>
>> priv = netdev_priv(ndev);
>> - priv->dev = &pdev->dev;
>> + priv->dev = dev;
>> priv->ndev = ndev;
>> + priv->plat_data = plat_data;
>>
>> - priv->regs = devm_ioremap_resource(&pdev->dev, &res_regs);
>> + priv->regs = devm_ioremap_resource(dev, &res_regs);
>> if (IS_ERR(priv->regs)) {
>> err = PTR_ERR(priv->regs);
>> goto out_netdev;
>> }
>> - dev_dbg(&pdev->dev, "Registers base address is 0x%p\n", priv->regs);
>> -
>> - priv->clk = of_clk_get(pdev->dev.of_node, 0);
>> - if (IS_ERR(priv->clk)) {
>> - /* Get CPU clock frequency from device tree */
>> - if (of_property_read_u32(pdev->dev.of_node, "clock-frequency",
>> - &clock_frequency)) {
>> - dev_err(&pdev->dev, "failed to retrieve <clock-frequency> from
> device
>> tree\n"); - err = -EINVAL;
>> - goto out_netdev;
>> - }
>> - } else {
>> - err = clk_prepare_enable(priv->clk);
>> + dev_dbg(dev, "Registers base address is 0x%p\n", priv->regs);
>> +
>> + if (plat_data->clk) {
>> + err = clk_prepare_enable(plat_data->clk);
>> if (err) {
>> - dev_err(&pdev->dev, "failed to enable clock\n");
>> + dev_err(dev, "failed to enable clock\n");
>> goto out_clkget;
>> }
>> -
>> - clock_frequency = clk_get_rate(priv->clk);
>> + clock_frequency = clk_get_rate(plat_data->clk);
>> }
>>
>> - id = arc_reg_get(priv, R_ID);
>> + id = emac_reg_get(priv, R_ID);
>>
>> /* Check for EMAC revision 5 or 7, magic number */
>> if (!(id == 0x0005fd02 || id == 0x0007fd02)) {
>> - dev_err(&pdev->dev, "ARC EMAC not detected, id=0x%x\n", id);
>> + dev_err(dev, "EMAC not detected, id=0x%x\n", id);
>> err = -ENODEV;
>> goto out_clken;
>> }
>> - dev_info(&pdev->dev, "ARC EMAC detected with id: 0x%x\n", id);
>> + dev_info(dev, "EMAC detected with id: 0x%x\n", id);
>>
>> /* Set poll rate so that it polls every 1 ms */
>> - arc_reg_set(priv, R_POLLRATE, clock_frequency / 1000000);
>> + emac_reg_set(priv, R_POLLRATE, clock_frequency / 1000000);
>>
>> ndev->irq = irq;
>> - dev_info(&pdev->dev, "IRQ is %d\n", ndev->irq);
>> + dev_dbg(dev, "IRQ is %d\n", ndev->irq);
>>
>> /* Register interrupt handler for device */
>> - err = devm_request_irq(&pdev->dev, ndev->irq, arc_emac_intr, 0,
>> + err = devm_request_irq(dev, ndev->irq, emac_intr, 0,
>> ndev->name, ndev);
>> if (err) {
>> - dev_err(&pdev->dev, "could not allocate IRQ\n");
>> + dev_err(dev, "could not allocate IRQ\n");
>> goto out_clken;
>> }
>>
>> /* Get MAC address from device tree */
>> - mac_addr = of_get_mac_address(pdev->dev.of_node);
>> + mac_addr = of_get_mac_address(dev->of_node);
>>
>> if (mac_addr)
>> memcpy(ndev->dev_addr, mac_addr, ETH_ALEN);
>> else
>> eth_hw_addr_random(ndev);
>>
>> - arc_emac_set_address_internal(ndev);
>> - dev_info(&pdev->dev, "MAC address is now %pM\n", ndev->dev_addr);
>> + emac_set_address_internal(ndev);
>> + dev_info(dev, "MAC address is now %pM\n", ndev->dev_addr);
>>
>> /* Do 1 allocation instead of 2 separate ones for Rx and Tx BD rings */
>> - priv->rxbd = dmam_alloc_coherent(&pdev->dev, RX_RING_SZ + TX_RING_SZ,
>> + priv->rxbd = dmam_alloc_coherent(dev, RX_RING_SZ + TX_RING_SZ,
>> &priv->rxbd_dma, GFP_KERNEL);
>>
>> if (!priv->rxbd) {
>> - dev_err(&pdev->dev, "failed to allocate data buffers\n");
>> + dev_err(dev, "failed to allocate data buffers\n");
>> err = -ENOMEM;
>> goto out_clken;
>> }
>> @@ -796,31 +787,31 @@ static int arc_emac_probe(struct platform_device
>> *pdev) priv->txbd = priv->rxbd + RX_BD_NUM;
>>
>> priv->txbd_dma = priv->rxbd_dma + RX_RING_SZ;
>> - dev_dbg(&pdev->dev, "EMAC Device addr: Rx Ring [0x%x], Tx Ring[%x]\n",
>> + dev_dbg(dev, "EMAC Device addr: Rx Ring [0x%x], Tx Ring[%x]\n",
>> (unsigned int)priv->rxbd_dma, (unsigned int)priv->txbd_dma);
>>
>> - err = arc_mdio_probe(pdev, priv);
>> + err = emac_mdio_probe(priv);
>> if (err) {
>> - dev_err(&pdev->dev, "failed to probe MII bus\n");
>> + dev_err(dev, "failed to probe MII bus\n");
>> goto out_clken;
>> }
>>
>> - priv->phy_dev = of_phy_connect(ndev, phy_node, arc_emac_adjust_link, 0,
>> - PHY_INTERFACE_MODE_MII);
>> + priv->phy_dev = of_phy_connect(ndev, phy_node, emac_adjust_link, 0,
>> + plat_data->interface);
>> if (!priv->phy_dev) {
>> - dev_err(&pdev->dev, "of_phy_connect() failed\n");
>> + dev_err(dev, "of_phy_connect() failed\n");
>> err = -ENODEV;
>> goto out_mdio;
>> }
>>
>> - dev_info(&pdev->dev, "connected to %s phy with id 0x%x\n",
>> + dev_info(dev, "connected to %s phy with id 0x%x\n",
>> priv->phy_dev->drv->name, priv->phy_dev->phy_id);
>>
>> - netif_napi_add(ndev, &priv->napi, arc_emac_poll, ARC_EMAC_NAPI_WEIGHT);
>> + netif_napi_add(ndev, &priv->napi, emac_poll, EMAC_NAPI_WEIGHT);
>>
>> err = register_netdev(ndev);
>> if (err) {
>> - dev_err(&pdev->dev, "failed to register network device\n");
>> + dev_err(dev, "failed to register network device\n");
>> goto out_netif_api;
>> }
>>
>> @@ -831,32 +822,31 @@ out_netif_api:
>> phy_disconnect(priv->phy_dev);
>> priv->phy_dev = NULL;
>> out_mdio:
>> - arc_mdio_remove(priv);
>> + emac_mdio_remove(priv);
>> out_clken:
>> - if (!IS_ERR(priv->clk))
>> - clk_disable_unprepare(priv->clk);
>> + if (!IS_ERR(plat_data->clk))
>> + clk_disable_unprepare(plat_data->clk);
>> out_clkget:
>> - if (!IS_ERR(priv->clk))
>> - clk_put(priv->clk);
>> + if (!IS_ERR(plat_data->clk))
>> + clk_put(plat_data->clk);
>> out_netdev:
>> free_netdev(ndev);
>> return err;
>> }
>>
>> -static int arc_emac_remove(struct platform_device *pdev)
>> +int emac_drv_remove(struct net_device *ndev)
>> {
>> - struct net_device *ndev = platform_get_drvdata(pdev);
>> - struct arc_emac_priv *priv = netdev_priv(ndev);
>> + struct emac_priv *priv = netdev_priv(ndev);
>>
>> phy_disconnect(priv->phy_dev);
>> priv->phy_dev = NULL;
>> - arc_mdio_remove(priv);
>> + emac_mdio_remove(priv);
>> unregister_netdev(ndev);
>> netif_napi_del(&priv->napi);
>>
>> - if (!IS_ERR(priv->clk)) {
>> - clk_disable_unprepare(priv->clk);
>> - clk_put(priv->clk);
>> + if (priv->plat_data->clk) {
>> + clk_disable_unprepare(priv->plat_data->clk);
>> + clk_put(priv->plat_data->clk);
>> }
>>
>> free_netdev(ndev);
>> @@ -864,24 +854,6 @@ static int arc_emac_remove(struct platform_device
>> *pdev) return 0;
>> }
>>
>> -static const struct of_device_id arc_emac_dt_ids[] = {
>> - { .compatible = "snps,arc-emac" },
>> - { /* Sentinel */ }
>> -};
>> -MODULE_DEVICE_TABLE(of, arc_emac_dt_ids);
>> -
>> -static struct platform_driver arc_emac_driver = {
>> - .probe = arc_emac_probe,
>> - .remove = arc_emac_remove,
>> - .driver = {
>> - .name = DRV_NAME,
>> - .owner = THIS_MODULE,
>> - .of_match_table = arc_emac_dt_ids,
>> - },
>> -};
>> -
>> -module_platform_driver(arc_emac_driver);
>> -
>> MODULE_AUTHOR("Alexey Brodkin <abrodkin@...opsys.com>");
>> -MODULE_DESCRIPTION("ARC EMAC driver");
>> +MODULE_DESCRIPTION("EMAC driver");
>> MODULE_LICENSE("GPL");
>> diff --git a/drivers/net/ethernet/arc/emac_mdio.c
>> b/drivers/net/ethernet/arc/emac_mdio.c index 26ba242..b1397ea 100644
>> --- a/drivers/net/ethernet/arc/emac_mdio.c
>> +++ b/drivers/net/ethernet/arc/emac_mdio.c
>> @@ -1,7 +1,7 @@
>> /*
>> * Copyright (C) 2004-2013 Synopsys, Inc. (www.synopsys.com)
>> *
>> - * MDIO implementation for ARC EMAC
>> + * MDIO implementation for EMAC
>> */
>>
>> #include <linux/delay.h>
>> @@ -11,26 +11,26 @@
>> #include "emac.h"
>>
>> /* Number of seconds we wait for "MDIO complete" flag to appear */
>> -#define ARC_MDIO_COMPLETE_POLL_COUNT 1
>> +#define EMAC_MDIO_COMPLETE_POLL_COUNT 1
>>
>> /**
>> - * arc_mdio_complete_wait - Waits until MDIO transaction is completed.
>> - * @priv: Pointer to ARC EMAC private data structure.
>> + * emac_mdio_complete_wait - Waits until MDIO transaction is completed.
>> + * @priv: Pointer to EMAC private data structure.
>> *
>> * returns: 0 on success, -ETIMEDOUT on a timeout.
>> */
>> -static int arc_mdio_complete_wait(struct arc_emac_priv *priv)
>> +static int emac_mdio_complete_wait(struct emac_priv *priv)
>> {
>> unsigned int i;
>>
>> - for (i = 0; i < ARC_MDIO_COMPLETE_POLL_COUNT * 40; i++) {
>> - unsigned int status = arc_reg_get(priv, R_STATUS);
>> + for (i = 0; i < EMAC_MDIO_COMPLETE_POLL_COUNT * 40; i++) {
>> + unsigned int status = emac_reg_get(priv, R_STATUS);
>>
>> status &= MDIO_MASK;
>>
>> if (status) {
>> /* Reset "MDIO complete" flag */
>> - arc_reg_set(priv, R_STATUS, status);
>> + emac_reg_set(priv, R_STATUS, status);
>> return 0;
>> }
>>
>> @@ -41,7 +41,7 @@ static int arc_mdio_complete_wait(struct arc_emac_priv
>> *priv) }
>>
>> /**
>> - * arc_mdio_read - MDIO interface read function.
>> + * emac_mdio_read - MDIO interface read function.
>> * @bus: Pointer to MII bus structure.
>> * @phy_addr: Address of the PHY device.
>> * @reg_num: PHY register to read.
>> @@ -51,29 +51,29 @@ static int arc_mdio_complete_wait(struct arc_emac_priv
>> *priv) * Reads the contents of the requested register from the requested
>> PHY * address.
>> */
>> -static int arc_mdio_read(struct mii_bus *bus, int phy_addr, int reg_num)
>> +static int emac_mdio_read(struct mii_bus *bus, int phy_addr, int reg_num)
>> {
>> - struct arc_emac_priv *priv = bus->priv;
>> + struct emac_priv *priv = bus->priv;
>> unsigned int value;
>> int error;
>>
>> - arc_reg_set(priv, R_MDIO,
>> + emac_reg_set(priv, R_MDIO,
>> 0x60020000 | (phy_addr << 23) | (reg_num << 18));
>>
>> - error = arc_mdio_complete_wait(priv);
>> + error = emac_mdio_complete_wait(priv);
>> if (error < 0)
>> return error;
>>
>> - value = arc_reg_get(priv, R_MDIO) & 0xffff;
>> + value = emac_reg_get(priv, R_MDIO) & 0xffff;
>>
>> - dev_dbg(priv->dev, "arc_mdio_read(phy_addr=%i, reg_num=%x) = %x\n",
>> + dev_dbg(priv->dev, "emac_mdio_read(phy_addr=%i, reg_num=%x) = %x\n",
>> phy_addr, reg_num, value);
>>
>> return value;
>> }
>>
>> /**
>> - * arc_mdio_write - MDIO interface write function.
>> + * emac_mdio_write - MDIO interface write function.
>> * @bus: Pointer to MII bus structure.
>> * @phy_addr: Address of the PHY device.
>> * @reg_num: PHY register to write to.
>> @@ -83,32 +83,32 @@ static int arc_mdio_read(struct mii_bus *bus, int
>> phy_addr, int reg_num) *
>> * Writes the value to the requested register.
>> */
>> -static int arc_mdio_write(struct mii_bus *bus, int phy_addr,
>> +static int emac_mdio_write(struct mii_bus *bus, int phy_addr,
>> int reg_num, u16 value)
>> {
>> - struct arc_emac_priv *priv = bus->priv;
>> + struct emac_priv *priv = bus->priv;
>>
>> dev_dbg(priv->dev,
>> - "arc_mdio_write(phy_addr=%i, reg_num=%x, value=%x)\n",
>> + "emac_mdio_write(phy_addr=%i, reg_num=%x, value=%x)\n",
>> phy_addr, reg_num, value);
>>
>> - arc_reg_set(priv, R_MDIO,
>> + emac_reg_set(priv, R_MDIO,
>> 0x50020000 | (phy_addr << 23) | (reg_num << 18) | value);
>>
>> - return arc_mdio_complete_wait(priv);
>> + return emac_mdio_complete_wait(priv);
>> }
>>
>> /**
>> - * arc_mdio_probe - MDIO probe function.
>> + * emac_mdio_probe - MDIO probe function.
>> * @pdev: Pointer to platform device.
>> - * @priv: Pointer to ARC EMAC private data structure.
>> + * @priv: Pointer to EMAC private data structure.
>> *
>> * returns: 0 on success, -ENOMEM when mdiobus_alloc
>> * (to allocate memory for MII bus structure) fails.
>> *
>> * Sets up and registers the MDIO interface.
>> */
>> -int arc_mdio_probe(struct platform_device *pdev, struct arc_emac_priv
>> *priv) +int emac_mdio_probe(struct emac_priv *priv)
>> {
>> struct mii_bus *bus;
>> int error;
>> @@ -121,12 +121,12 @@ int arc_mdio_probe(struct platform_device *pdev,
>> struct arc_emac_priv *priv) bus->priv = priv;
>> bus->parent = priv->dev;
>> bus->name = "Synopsys MII Bus",
>> - bus->read = &arc_mdio_read;
>> - bus->write = &arc_mdio_write;
>> + bus->read = &emac_mdio_read;
>> + bus->write = &emac_mdio_write;
>>
>> - snprintf(bus->id, MII_BUS_ID_SIZE, "%s", pdev->name);
>> + snprintf(bus->id, MII_BUS_ID_SIZE, "%s", bus->name);
>>
>> - error = of_mdiobus_register(bus, pdev->dev.of_node);
>> + error = of_mdiobus_register(bus, priv->dev->of_node);
>> if (error) {
>> dev_err(priv->dev, "cannot register MDIO bus %s\n", bus->name);
>> mdiobus_free(bus);
>> @@ -137,12 +137,12 @@ int arc_mdio_probe(struct platform_device *pdev,
>> struct arc_emac_priv *priv) }
>>
>> /**
>> - * arc_mdio_remove - MDIO remove function.
>> - * @priv: Pointer to ARC EMAC private data structure.
>> + * emac_mdio_remove - MDIO remove function.
>> + * @priv: Pointer to EMAC private data structure.
>> *
>> * Unregisters the MDIO and frees any associate memory for MII bus.
>> */
>> -int arc_mdio_remove(struct arc_emac_priv *priv)
>> +int emac_mdio_remove(struct emac_priv *priv)
>> {
>> mdiobus_unregister(priv->bus);
>> mdiobus_free(priv->bus);
--
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