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remove platform specific initialization from ethernet driver

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Hardware filtering must always be enabled as long as there is an Ethernet
device registered, and use device tree for setting the link activity and
buffer shifting enable/disable bit.

SVN-Revision: 32486
This commit is contained in:
Florian Fainelli 2012-06-23 11:03:35 +00:00
parent 2c47bbc199
commit 7c984552ed
4 changed files with 90 additions and 24 deletions
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3
target/linux/mcs814x/files-3.3/arch/arm/boot/dts/mcs8140.dtsi
View File

@ -37,11 +37,12 @@
ranges;
eth0: ethernet@40084000 {
//compatible = "moschip,mcs814x-eth";
compatible = "moschip,nuport-mac";
reg = <0x40084000 0xd8 // mac
0x40080000 0x58>; // dma channels
interrupts = <4 5 29>; /* tx, rx, link */
nuport-mac,buffer-shifting;
nuport-mac,link-activity = <0>;
};
tso@40088000 {

3
target/linux/mcs814x/files-3.3/arch/arm/boot/dts/rbt-832.dts
View File

@ -19,6 +19,9 @@
ahb {
vci {
eth0: ethernet@40084000 {
nuport-mac,link-activity = <0x01>;
};
adc {
sdram: memory@0,0 {

77
target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/common.c
View File

@ -12,6 +12,8 @@
#include <linux/init.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <asm/setup.h>
#include <asm/mach-types.h>
@ -30,9 +32,12 @@ static struct map_desc mcs814x_io_desc[] __initdata = {
},
};
#define SYSDBG_BS2 0x04
#define CPU_MODE_SHIFT 23
#define CPU_MODE_MASK 0x03
#define SYSDBG_BS2 0x04
#define LED_CFG_MASK 0x03
#define CPU_MODE_SHIFT 23
#define CPU_MODE_MASK 0x03
#define SYSDBG_SYSCTL_MAC 0x1d
struct cpu_mode {
const char *name;
@ -63,6 +68,70 @@ static const struct cpu_mode cpu_modes[] = {
},
};
static void mcs814x_eth_hardware_filter_set(u8 value)
{
u32 reg;
reg = __raw_readl(_CONFADDR_DBGLED);
if (value)
reg |= 0x80;
else
reg &= ~0x80;
__raw_writel(reg, _CONFADDR_DBGLED);
}
static void mcs814x_eth_led_cfg_set(u8 cfg)
{
u32 reg;
reg = __raw_readl(_CONFADDR_SYSDBG + SYSDBG_BS2);
reg &= ~LED_CFG_MASK;
reg |= cfg;
__raw_writel(reg, _CONFADDR_SYSDBG + SYSDBG_BS2);
}
static void mcs814x_eth_buffer_shifting_set(u8 value)
{
u8 reg;
reg = __raw_readb(_CONFADDR_SYSDBG + SYSDBG_SYSCTL_MAC);
if (value)
reg |= 0x01;
else
reg &= ~0x01;
__raw_writeb(reg, _CONFADDR_SYSDBG + SYSDBG_SYSCTL_MAC);
}
static struct of_device_id mcs814x_eth_ids[] __initdata = {
{ .compatible = "moschip,nuport-mac", },
{ /* sentinel */ },
};
/* Configure platform specific knobs based on ethernet device node
* properties */
static void mcs814x_eth_init(void)
{
struct device_node *np;
const unsigned int *intspec;
np = of_find_matching_node(NULL, mcs814x_eth_ids);
if (!np)
return;
/* hardware filter must always be enabled */
mcs814x_eth_hardware_filter_set(1);
intspec = of_get_property(np, "nuport-mac,buffer-shifting", NULL);
if (!intspec)
mcs814x_eth_buffer_shifting_set(0);
else
mcs814x_eth_buffer_shifting_set(1);
intspec = of_get_property(np, "nuport-mac,link-activity", NULL);
if (intspec)
mcs814x_eth_led_cfg_set(be32_to_cpup(intspec));
}
void __init mcs814x_init_machine(void)
{
u32 bs2, cpu_mode;
@ -79,6 +148,8 @@ void __init mcs814x_init_machine(void)
if (gpio != -1)
gpio_request(gpio, cpu_modes[cpu_mode].name);
}
mcs814x_eth_init();
}
void __init mcs814x_map_io(void)

31
target/linux/mcs814x/files-3.3/drivers/net/ethernet/mcs8140/nuport_mac.c
View File

@ -27,7 +27,6 @@
#include <asm/unaligned.h>
#include <asm/sizes.h>
#include <mach/hardware.h>
/* Hardware registers */
#define MAC_BASE_ADDR ((priv->mac_base))
@ -140,6 +139,7 @@ struct nuport_mac_priv {
int old_link;
int old_duplex;
u32 msg_level;
unsigned int buffer_shifting_len;
};
static inline int nuport_mac_mii_busy_wait(struct nuport_mac_priv *priv)
@ -515,8 +515,8 @@ static int nuport_mac_rx(struct net_device *dev, int limit)
len = priv->pkt_len[priv->cur_rx];
/* Remove 2 bytes added by RX buffer shifting */
len = len - 2;
skb->data = skb->data + 2;
len = len - priv->buffer_shifting_len;
skb->data = skb->data + priv->buffer_shifting_len;
/* Get packet status */
status = get_unaligned((u32 *) (skb->data + len));
@ -691,18 +691,6 @@ static int nuport_mac_open(struct net_device *dev)
int ret;
struct nuport_mac_priv *priv = netdev_priv(dev);
unsigned long flags;
u32 reg;
u8 tmp;
/* Enable hardware filters */
reg = nuport_mac_readl((void __iomem *)_CONFADDR_DBGLED);
reg |= 0x80;
nuport_mac_writel(reg, (void __iomem *)_CONFADDR_DBGLED);
/* Set LEDs to Link act and RX/TX mode */
reg = nuport_mac_readl((void __iomem *)(_CONFADDR_SYSDBG + 0x04));
reg |= 0x01;
nuport_mac_writel(reg, (void __iomem *)(_CONFADDR_SYSDBG + 0x04));
ret = clk_enable(priv->emac_clk);
if (ret) {
@ -747,11 +735,6 @@ static int nuport_mac_open(struct net_device *dev)
goto out_tx_irq;
}
/* Enable buffer shifting in RX */
tmp = nuport_mac_readb((void __iomem *)(_CONFADDR_SYSDBG + 0x1D));
tmp |= 0x01;
nuport_mac_writeb(tmp, (void __iomem *)(_CONFADDR_SYSDBG + 0x1D));
netif_start_queue(dev);
nuport_mac_init_tx_ring(priv);
@ -947,6 +930,7 @@ static int __init nuport_mac_probe(struct platform_device *pdev)
int ret = 0;
int rx_irq, tx_irq, link_irq;
int i;
const unsigned int *intspec;
dev = alloc_etherdev(sizeof(struct nuport_mac_priv));
if (!dev) {
@ -977,6 +961,13 @@ static int __init nuport_mac_probe(struct platform_device *pdev)
priv->dev = dev;
spin_lock_init(&priv->lock);
intspec = of_get_property(pdev->dev.of_node,
"nuport-mac,buffer-shifting", NULL);
if (!intspec)
priv->buffer_shifting_len = 0;
else
priv->buffer_shifting_len = 2;
priv->mac_base = devm_ioremap(&pdev->dev,
regs->start, resource_size(regs));
if (!priv->mac_base) {