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Commit 2cd8e5d3 authored by Stephen Hemminger's avatar Stephen Hemminger Committed by Jeff Garzik
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[PATCH] skge: add mii ioctl support 

Basic MII ioctl support for skge driver.
Signed-off-by: default avatarStephen Hemminger <shemminger@osdl.org>
Signed-off-by: default avatarJeff Garzik <jgarzik@pobox.com>
parent 7e863061
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Showing with 114 additions and 58 deletions
drivers/net/skge.c
View file @ 2cd8e5d3
......@@ -37,6 +37,7 @@
#include <linux/delay.h>
#include <linux/crc32.h>
#include <linux/dma-mapping.h>
#include <linux/mii.h>
#include <asm/irq.h>
#include "skge.h"
......@@ -88,8 +89,8 @@ MODULE_DEVICE_TABLE(pci, skge_id_table);
static int skge_up(struct net_device *dev);
static int skge_down(struct net_device *dev);
static void skge_tx_clean(struct skge_port *skge);
static void xm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val);
static void gm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val);
static int xm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val);
static int gm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val);
static void genesis_get_stats(struct skge_port *skge, u64 *data);
static void yukon_get_stats(struct skge_port *skge, u64 *data);
static void yukon_init(struct skge_hw *hw, int port);
......@@ -883,32 +884,37 @@ static void skge_link_down(struct skge_port *skge)
printk(KERN_INFO PFX "%s: Link is down.\n", skge->netdev->name);
}
static u16 xm_phy_read(struct skge_hw *hw, int port, u16 reg)
static int __xm_phy_read(struct skge_hw *hw, int port, u16 reg, u16 *val)
{
int i;
u16 v;
xm_write16(hw, port, XM_PHY_ADDR, reg | hw->phy_addr);
v = xm_read16(hw, port, XM_PHY_DATA);
xm_read16(hw, port, XM_PHY_DATA);
/* Need to wait for external PHY */
for (i = 0; i < PHY_RETRIES; i++) {
udelay(1);
if (xm_read16(hw, port, XM_MMU_CMD)
& XM_MMU_PHY_RDY)
if (xm_read16(hw, port, XM_MMU_CMD) & XM_MMU_PHY_RDY)
goto ready;
}
printk(KERN_WARNING PFX "%s: phy read timed out\n",
hw->dev[port]->name);
return 0;
return -ETIMEDOUT;
ready:
v = xm_read16(hw, port, XM_PHY_DATA);
*val = xm_read16(hw, port, XM_PHY_DATA);
return 0;
}
static u16 xm_phy_read(struct skge_hw *hw, int port, u16 reg)
{
u16 v = 0;
if (__xm_phy_read(hw, port, reg, &v))
printk(KERN_WARNING PFX "%s: phy read timed out\n",
hw->dev[port]->name);
return v;
}
static void xm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val)
static int xm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val)
{
int i;
......@@ -918,19 +924,11 @@ static void xm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val)
goto ready;
udelay(1);
}
printk(KERN_WARNING PFX "%s: phy write failed to come ready\n",
hw->dev[port]->name);
return -EIO;
ready:
xm_write16(hw, port, XM_PHY_DATA, val);
for (i = 0; i < PHY_RETRIES; i++) {
udelay(1);
if (!(xm_read16(hw, port, XM_MMU_CMD) & XM_MMU_PHY_BUSY))
return;
}
printk(KERN_WARNING PFX "%s: phy write timed out\n",
hw->dev[port]->name);
return 0;
}
static void genesis_init(struct skge_hw *hw)
......@@ -1400,42 +1398,6 @@ static void genesis_mac_intr(struct skge_hw *hw, int port)
}
}
static void gm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val)
{
int i;
gma_write16(hw, port, GM_SMI_DATA, val);
gma_write16(hw, port, GM_SMI_CTRL,
GM_SMI_CT_PHY_AD(hw->phy_addr) | GM_SMI_CT_REG_AD(reg));
for (i = 0; i < PHY_RETRIES; i++) {
udelay(1);
if (!(gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY))
break;
}
}
static u16 gm_phy_read(struct skge_hw *hw, int port, u16 reg)
{
int i;
gma_write16(hw, port, GM_SMI_CTRL,
GM_SMI_CT_PHY_AD(hw->phy_addr)
| GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
for (i = 0; i < PHY_RETRIES; i++) {
udelay(1);
if (gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL)
goto ready;
}
printk(KERN_WARNING PFX "%s: phy read timeout\n",
hw->dev[port]->name);
return 0;
ready:
return gma_read16(hw, port, GM_SMI_DATA);
}
static void genesis_link_up(struct skge_port *skge)
{
struct skge_hw *hw = skge->hw;
......@@ -1549,6 +1511,54 @@ static inline void bcom_phy_intr(struct skge_port *skge)
}
static int gm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val)
{
int i;
gma_write16(hw, port, GM_SMI_DATA, val);
gma_write16(hw, port, GM_SMI_CTRL,
GM_SMI_CT_PHY_AD(hw->phy_addr) | GM_SMI_CT_REG_AD(reg));
for (i = 0; i < PHY_RETRIES; i++) {
udelay(1);
if (!(gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY))
return 0;
}
printk(KERN_WARNING PFX "%s: phy write timeout\n",
hw->dev[port]->name);
return -EIO;
}
static int __gm_phy_read(struct skge_hw *hw, int port, u16 reg, u16 *val)
{
int i;
gma_write16(hw, port, GM_SMI_CTRL,
GM_SMI_CT_PHY_AD(hw->phy_addr)
| GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
for (i = 0; i < PHY_RETRIES; i++) {
udelay(1);
if (gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL)
goto ready;
}
return -ETIMEDOUT;
ready:
*val = gma_read16(hw, port, GM_SMI_DATA);
return 0;
}
static u16 gm_phy_read(struct skge_hw *hw, int port, u16 reg)
{
u16 v = 0;
if (__gm_phy_read(hw, port, reg, &v))
printk(KERN_WARNING PFX "%s: phy read timeout\n",
hw->dev[port]->name);
return v;
}
/* Marvell Phy Initailization */
static void yukon_init(struct skge_hw *hw, int port)
{
......@@ -1997,6 +2007,51 @@ static void yukon_phy_intr(struct skge_port *skge)
/* XXX restart autonegotiation? */
}
/* Basic MII support */
static int skge_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
struct mii_ioctl_data *data = if_mii(ifr);
struct skge_port *skge = netdev_priv(dev);
struct skge_hw *hw = skge->hw;
int err = -EOPNOTSUPP;
if (!netif_running(dev))
return -ENODEV; /* Phy still in reset */
switch(cmd) {
case SIOCGMIIPHY:
data->phy_id = hw->phy_addr;
/* fallthru */
case SIOCGMIIREG: {
u16 val = 0;
spin_lock_bh(&hw->phy_lock);
if (hw->chip_id == CHIP_ID_GENESIS)
err = __xm_phy_read(hw, skge->port, data->reg_num & 0x1f, &val);
else
err = __gm_phy_read(hw, skge->port, data->reg_num & 0x1f, &val);
spin_unlock_bh(&hw->phy_lock);
data->val_out = val;
break;
}
case SIOCSMIIREG:
if (!capable(CAP_NET_ADMIN))
return -EPERM;
spin_lock_bh(&hw->phy_lock);
if (hw->chip_id == CHIP_ID_GENESIS)
err = xm_phy_write(hw, skge->port, data->reg_num & 0x1f,
data->val_in);
else
err = gm_phy_write(hw, skge->port, data->reg_num & 0x1f,
data->val_in);
spin_unlock_bh(&hw->phy_lock);
break;
}
return err;
}
static void skge_ramset(struct skge_hw *hw, u16 q, u32 start, size_t len)
{
u32 end;
......@@ -3058,6 +3113,7 @@ static struct net_device *skge_devinit(struct skge_hw *hw, int port,
SET_NETDEV_DEV(dev, &hw->pdev->dev);
dev->open = skge_up;
dev->stop = skge_down;
dev->do_ioctl = skge_ioctl;
dev->hard_start_xmit = skge_xmit_frame;
dev->get_stats = skge_get_stats;
if (hw->chip_id == CHIP_ID_GENESIS)
......
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