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path: root/drivers/net/ethernet/ibm/emac/core.c
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Diffstat (limited to 'drivers/net/ethernet/ibm/emac/core.c')
-rw-r--r--drivers/net/ethernet/ibm/emac/core.c124
1 files changed, 84 insertions, 40 deletions
diff --git a/drivers/net/ethernet/ibm/emac/core.c b/drivers/net/ethernet/ibm/emac/core.c
index 2abce965c7b..87bd953cc2e 100644
--- a/drivers/net/ethernet/ibm/emac/core.c
+++ b/drivers/net/ethernet/ibm/emac/core.c
@@ -1,5 +1,5 @@
/*
- * drivers/net/ibm_newemac/core.c
+ * drivers/net/ethernet/ibm/emac/core.c
*
* Driver for PowerPC 4xx on-chip ethernet controller.
*
@@ -39,6 +39,8 @@
#include <linux/bitops.h>
#include <linux/workqueue.h>
#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
#include <linux/of_net.h>
#include <linux/slab.h>
@@ -359,10 +361,26 @@ static int emac_reset(struct emac_instance *dev)
}
#ifdef CONFIG_PPC_DCR_NATIVE
- /* Enable internal clock source */
- if (emac_has_feature(dev, EMAC_FTR_460EX_PHY_CLK_FIX))
- dcri_clrset(SDR0, SDR0_ETH_CFG,
- 0, SDR0_ETH_CFG_ECS << dev->cell_index);
+ /*
+ * PPC460EX/GT Embedded Processor Advanced User's Manual
+ * section 28.10.1 Mode Register 0 (EMACx_MR0) states:
+ * Note: The PHY must provide a TX Clk in order to perform a soft reset
+ * of the EMAC. If none is present, select the internal clock
+ * (SDR0_ETH_CFG[EMACx_PHY_CLK] = 1).
+ * After a soft reset, select the external clock.
+ */
+ if (emac_has_feature(dev, EMAC_FTR_460EX_PHY_CLK_FIX)) {
+ if (dev->phy_address == 0xffffffff &&
+ dev->phy_map == 0xffffffff) {
+ /* No PHY: select internal loop clock before reset */
+ dcri_clrset(SDR0, SDR0_ETH_CFG,
+ 0, SDR0_ETH_CFG_ECS << dev->cell_index);
+ } else {
+ /* PHY present: select external clock before reset */
+ dcri_clrset(SDR0, SDR0_ETH_CFG,
+ SDR0_ETH_CFG_ECS << dev->cell_index, 0);
+ }
+ }
#endif
out_be32(&p->mr0, EMAC_MR0_SRST);
@@ -370,10 +388,14 @@ static int emac_reset(struct emac_instance *dev)
--n;
#ifdef CONFIG_PPC_DCR_NATIVE
- /* Enable external clock source */
- if (emac_has_feature(dev, EMAC_FTR_460EX_PHY_CLK_FIX))
- dcri_clrset(SDR0, SDR0_ETH_CFG,
- SDR0_ETH_CFG_ECS << dev->cell_index, 0);
+ if (emac_has_feature(dev, EMAC_FTR_460EX_PHY_CLK_FIX)) {
+ if (dev->phy_address == 0xffffffff &&
+ dev->phy_map == 0xffffffff) {
+ /* No PHY: restore external clock source after reset */
+ dcri_clrset(SDR0, SDR0_ETH_CFG,
+ SDR0_ETH_CFG_ECS << dev->cell_index, 0);
+ }
+ }
#endif
if (n) {
@@ -434,6 +456,11 @@ static inline u32 emac_iff2rmr(struct net_device *ndev)
else if (!netdev_mc_empty(ndev))
r |= EMAC_RMR_MAE;
+ if (emac_has_feature(dev, EMAC_APM821XX_REQ_JUMBO_FRAME_SIZE)) {
+ r &= ~EMAC4_RMR_MJS_MASK;
+ r |= EMAC4_RMR_MJS(ndev->mtu);
+ }
+
return r;
}
@@ -965,6 +992,7 @@ static int emac_resize_rx_ring(struct emac_instance *dev, int new_mtu)
int rx_sync_size = emac_rx_sync_size(new_mtu);
int rx_skb_size = emac_rx_skb_size(new_mtu);
int i, ret = 0;
+ int mr1_jumbo_bit_change = 0;
mutex_lock(&dev->link_lock);
emac_netif_stop(dev);
@@ -1013,7 +1041,15 @@ static int emac_resize_rx_ring(struct emac_instance *dev, int new_mtu)
}
skip:
/* Check if we need to change "Jumbo" bit in MR1 */
- if ((new_mtu > ETH_DATA_LEN) ^ (dev->ndev->mtu > ETH_DATA_LEN)) {
+ if (emac_has_feature(dev, EMAC_APM821XX_REQ_JUMBO_FRAME_SIZE)) {
+ mr1_jumbo_bit_change = (new_mtu > ETH_DATA_LEN) ||
+ (dev->ndev->mtu > ETH_DATA_LEN);
+ } else {
+ mr1_jumbo_bit_change = (new_mtu > ETH_DATA_LEN) ^
+ (dev->ndev->mtu > ETH_DATA_LEN);
+ }
+
+ if (mr1_jumbo_bit_change) {
/* This is to prevent starting RX channel in emac_rx_enable() */
set_bit(MAL_COMMAC_RX_STOPPED, &dev->commac.flags);
@@ -2176,11 +2212,10 @@ static void emac_ethtool_get_drvinfo(struct net_device *ndev,
{
struct emac_instance *dev = netdev_priv(ndev);
- strcpy(info->driver, "ibm_emac");
- strcpy(info->version, DRV_VERSION);
- info->fw_version[0] = '\0';
- sprintf(info->bus_info, "PPC 4xx EMAC-%d %s",
- dev->cell_index, dev->ofdev->dev.of_node->full_name);
+ strlcpy(info->driver, "ibm_emac", sizeof(info->driver));
+ strlcpy(info->version, DRV_VERSION, sizeof(info->version));
+ snprintf(info->bus_info, sizeof(info->bus_info), "PPC 4xx EMAC-%d %s",
+ dev->cell_index, dev->ofdev->dev.of_node->full_name);
info->regdump_len = emac_ethtool_get_regs_len(ndev);
}
@@ -2247,8 +2282,8 @@ struct emac_depentry {
#define EMAC_DEP_PREV_IDX 5
#define EMAC_DEP_COUNT 6
-static int __devinit emac_check_deps(struct emac_instance *dev,
- struct emac_depentry *deps)
+static int emac_check_deps(struct emac_instance *dev,
+ struct emac_depentry *deps)
{
int i, there = 0;
struct device_node *np;
@@ -2279,7 +2314,7 @@ static int __devinit emac_check_deps(struct emac_instance *dev,
if (deps[i].ofdev == NULL)
continue;
if (deps[i].drvdata == NULL)
- deps[i].drvdata = dev_get_drvdata(&deps[i].ofdev->dev);
+ deps[i].drvdata = platform_get_drvdata(deps[i].ofdev);
if (deps[i].drvdata != NULL)
there++;
}
@@ -2300,8 +2335,8 @@ static void emac_put_deps(struct emac_instance *dev)
of_dev_put(dev->tah_dev);
}
-static int __devinit emac_of_bus_notify(struct notifier_block *nb,
- unsigned long action, void *data)
+static int emac_of_bus_notify(struct notifier_block *nb, unsigned long action,
+ void *data)
{
/* We are only intereted in device addition */
if (action == BUS_NOTIFY_BOUND_DRIVER)
@@ -2309,11 +2344,11 @@ static int __devinit emac_of_bus_notify(struct notifier_block *nb,
return 0;
}
-static struct notifier_block emac_of_bus_notifier __devinitdata = {
+static struct notifier_block emac_of_bus_notifier = {
.notifier_call = emac_of_bus_notify
};
-static int __devinit emac_wait_deps(struct emac_instance *dev)
+static int emac_wait_deps(struct emac_instance *dev)
{
struct emac_depentry deps[EMAC_DEP_COUNT];
int i, err;
@@ -2353,8 +2388,8 @@ static int __devinit emac_wait_deps(struct emac_instance *dev)
return err;
}
-static int __devinit emac_read_uint_prop(struct device_node *np, const char *name,
- u32 *val, int fatal)
+static int emac_read_uint_prop(struct device_node *np, const char *name,
+ u32 *val, int fatal)
{
int len;
const u32 *prop = of_get_property(np, name, &len);
@@ -2368,7 +2403,7 @@ static int __devinit emac_read_uint_prop(struct device_node *np, const char *nam
return 0;
}
-static int __devinit emac_init_phy(struct emac_instance *dev)
+static int emac_init_phy(struct emac_instance *dev)
{
struct device_node *np = dev->ofdev->dev.of_node;
struct net_device *ndev = dev->ndev;
@@ -2471,6 +2506,7 @@ static int __devinit emac_init_phy(struct emac_instance *dev)
/* Disable any PHY features not supported by the platform */
dev->phy.def->features &= ~dev->phy_feat_exc;
+ dev->phy.features &= ~dev->phy_feat_exc;
/* Setup initial link parameters */
if (dev->phy.features & SUPPORTED_Autoneg) {
@@ -2503,7 +2539,7 @@ static int __devinit emac_init_phy(struct emac_instance *dev)
return 0;
}
-static int __devinit emac_init_config(struct emac_instance *dev)
+static int emac_init_config(struct emac_instance *dev)
{
struct device_node *np = dev->ofdev->dev.of_node;
const void *p;
@@ -2568,6 +2604,11 @@ static int __devinit emac_init_config(struct emac_instance *dev)
if (of_device_is_compatible(np, "ibm,emac-405ex") ||
of_device_is_compatible(np, "ibm,emac-405exr"))
dev->features |= EMAC_FTR_440EP_PHY_CLK_FIX;
+ if (of_device_is_compatible(np, "ibm,emac-apm821xx")) {
+ dev->features |= (EMAC_APM821XX_REQ_JUMBO_FRAME_SIZE |
+ EMAC_FTR_APM821XX_NO_HALF_DUPLEX |
+ EMAC_FTR_460EX_PHY_CLK_FIX);
+ }
} else if (of_device_is_compatible(np, "ibm,emac4")) {
dev->features |= EMAC_FTR_EMAC4;
if (of_device_is_compatible(np, "ibm,emac-440gx"))
@@ -2637,7 +2678,7 @@ static int __devinit emac_init_config(struct emac_instance *dev)
np->full_name);
return -ENXIO;
}
- memcpy(dev->ndev->dev_addr, p, 6);
+ memcpy(dev->ndev->dev_addr, p, ETH_ALEN);
/* IAHT and GAHT filter parameterization */
if (emac_has_feature(dev, EMAC_FTR_EMAC4SYNC)) {
@@ -2683,7 +2724,7 @@ static const struct net_device_ops emac_gige_netdev_ops = {
.ndo_change_mtu = emac_change_mtu,
};
-static int __devinit emac_probe(struct platform_device *ofdev)
+static int emac_probe(struct platform_device *ofdev)
{
struct net_device *ndev;
struct emac_instance *dev;
@@ -2706,11 +2747,9 @@ static int __devinit emac_probe(struct platform_device *ofdev)
/* Allocate our net_device structure */
err = -ENOMEM;
ndev = alloc_etherdev(sizeof(struct emac_instance));
- if (!ndev) {
- printk(KERN_ERR "%s: could not allocate ethernet device!\n",
- np->full_name);
+ if (!ndev)
goto err_gone;
- }
+
dev = netdev_priv(ndev);
dev->ndev = ndev;
dev->ofdev = ofdev;
@@ -2762,9 +2801,9 @@ static int __devinit emac_probe(struct platform_device *ofdev)
/* display more info about what's missing ? */
goto err_reg_unmap;
}
- dev->mal = dev_get_drvdata(&dev->mal_dev->dev);
+ dev->mal = platform_get_drvdata(dev->mal_dev);
if (dev->mdio_dev != NULL)
- dev->mdio_instance = dev_get_drvdata(&dev->mdio_dev->dev);
+ dev->mdio_instance = platform_get_drvdata(dev->mdio_dev);
/* Register with MAL */
dev->commac.ops = &emac_commac_ops;
@@ -2818,6 +2857,13 @@ static int __devinit emac_probe(struct platform_device *ofdev)
dev->stop_timeout = STOP_TIMEOUT_100;
INIT_DELAYED_WORK(&dev->link_work, emac_link_timer);
+ /* Some SoCs like APM821xx does not support Half Duplex mode. */
+ if (emac_has_feature(dev, EMAC_FTR_APM821XX_NO_HALF_DUPLEX)) {
+ dev->phy_feat_exc = (SUPPORTED_1000baseT_Half |
+ SUPPORTED_100baseT_Half |
+ SUPPORTED_10baseT_Half);
+ }
+
/* Find PHY if any */
err = emac_init_phy(dev);
if (err != 0)
@@ -2833,7 +2879,7 @@ static int __devinit emac_probe(struct platform_device *ofdev)
dev->commac.ops = &emac_commac_sg_ops;
} else
ndev->netdev_ops = &emac_netdev_ops;
- SET_ETHTOOL_OPS(ndev, &emac_ethtool_ops);
+ ndev->ethtool_ops = &emac_ethtool_ops;
netif_carrier_off(ndev);
@@ -2848,7 +2894,7 @@ static int __devinit emac_probe(struct platform_device *ofdev)
* fully initialized
*/
wmb();
- dev_set_drvdata(&ofdev->dev, dev);
+ platform_set_drvdata(ofdev, dev);
/* There's a new kid in town ! Let's tell everybody */
wake_up_all(&emac_probe_wait);
@@ -2905,14 +2951,12 @@ static int __devinit emac_probe(struct platform_device *ofdev)
return err;
}
-static int __devexit emac_remove(struct platform_device *ofdev)
+static int emac_remove(struct platform_device *ofdev)
{
- struct emac_instance *dev = dev_get_drvdata(&ofdev->dev);
+ struct emac_instance *dev = platform_get_drvdata(ofdev);
DBG(dev, "remove" NL);
- dev_set_drvdata(&ofdev->dev, NULL);
-
unregister_netdev(dev->ndev);
cancel_work_sync(&dev->reset_work);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 12:07:16 +0000