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gianfar: Add magic packet and suspend/resume support. 

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Scott Wood 2008-07-11 18:04:45 -05:00 committed by Kumar Gala
parent 7e1cc9c55a
commit d87eb12785
5 changed files with 173 additions and 6 deletions
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3
arch/powerpc/sysdev/fsl_soc.c
View File

@ -352,6 +352,9 @@ static int __init gfar_of_init(void)
else
gfar_data.interface = PHY_INTERFACE_MODE_MII;
if (of_get_property(np, "fsl,magic-packet", NULL))
gfar_data.device_flags |= FSL_GIANFAR_DEV_HAS_MAGIC_PACKET;
ph = of_get_property(np, "phy-handle", NULL);
if (ph == NULL) {
u32 *fixed_link;

122
drivers/net/gianfar.c
View File

@ -143,6 +143,9 @@ static int gfar_process_frame(struct net_device *dev, struct sk_buff *skb, int l
static void gfar_vlan_rx_register(struct net_device *netdev,
struct vlan_group *grp);
void gfar_halt(struct net_device *dev);
#ifdef CONFIG_PM
static void gfar_halt_nodisable(struct net_device *dev);
#endif
void gfar_start(struct net_device *dev);
static void gfar_clear_exact_match(struct net_device *dev);
static void gfar_set_mac_for_addr(struct net_device *dev, int num, u8 *addr);
@ -216,6 +219,7 @@ static int gfar_probe(struct platform_device *pdev)
spin_lock_init(&priv->txlock);
spin_lock_init(&priv->rxlock);
spin_lock_init(&priv->bflock);
platform_set_drvdata(pdev, dev);
@ -393,6 +397,103 @@ static int gfar_remove(struct platform_device *pdev)
return 0;
}
#ifdef CONFIG_PM
static int gfar_suspend(struct platform_device *pdev, pm_message_t state)
{
struct net_device *dev = platform_get_drvdata(pdev);
struct gfar_private *priv = netdev_priv(dev);
unsigned long flags;
u32 tempval;
int magic_packet = priv->wol_en &&
(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET);
netif_device_detach(dev);
if (netif_running(dev)) {
spin_lock_irqsave(&priv->txlock, flags);
spin_lock(&priv->rxlock);
gfar_halt_nodisable(dev);
/* Disable Tx, and Rx if wake-on-LAN is disabled. */
tempval = gfar_read(&priv->regs->maccfg1);
tempval &= ~MACCFG1_TX_EN;
if (!magic_packet)
tempval &= ~MACCFG1_RX_EN;
gfar_write(&priv->regs->maccfg1, tempval);
spin_unlock(&priv->rxlock);
spin_unlock_irqrestore(&priv->txlock, flags);
#ifdef CONFIG_GFAR_NAPI
napi_disable(&priv->napi);
#endif
if (magic_packet) {
/* Enable interrupt on Magic Packet */
gfar_write(&priv->regs->imask, IMASK_MAG);
/* Enable Magic Packet mode */
tempval = gfar_read(&priv->regs->maccfg2);
tempval |= MACCFG2_MPEN;
gfar_write(&priv->regs->maccfg2, tempval);
} else {
phy_stop(priv->phydev);
}
}
return 0;
}
static int gfar_resume(struct platform_device *pdev)
{
struct net_device *dev = platform_get_drvdata(pdev);
struct gfar_private *priv = netdev_priv(dev);
unsigned long flags;
u32 tempval;
int magic_packet = priv->wol_en &&
(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET);
if (!netif_running(dev)) {
netif_device_attach(dev);
return 0;
}
if (!magic_packet && priv->phydev)
phy_start(priv->phydev);
/* Disable Magic Packet mode, in case something
* else woke us up.
*/
spin_lock_irqsave(&priv->txlock, flags);
spin_lock(&priv->rxlock);
tempval = gfar_read(&priv->regs->maccfg2);
tempval &= ~MACCFG2_MPEN;
gfar_write(&priv->regs->maccfg2, tempval);
gfar_start(dev);
spin_unlock(&priv->rxlock);
spin_unlock_irqrestore(&priv->txlock, flags);
netif_device_attach(dev);
#ifdef CONFIG_GFAR_NAPI
napi_enable(&priv->napi);
#endif
return 0;
}
#else
#define gfar_suspend NULL
#define gfar_resume NULL
#endif
/* Reads the controller's registers to determine what interface
* connects it to the PHY.
@ -549,8 +650,9 @@ static void init_registers(struct net_device *dev)
}
#ifdef CONFIG_PM
/* Halt the receive and transmit queues */
void gfar_halt(struct net_device *dev)
static void gfar_halt_nodisable(struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
struct gfar __iomem *regs = priv->regs;
@ -573,6 +675,15 @@ void gfar_halt(struct net_device *dev)
(IEVENT_GRSC | IEVENT_GTSC)))
cpu_relax();
}
}
#endif
/* Halt the receive and transmit queues */
void gfar_halt(struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
struct gfar __iomem *regs = priv->regs;
u32 tempval;
/* Disable Rx and Tx */
tempval = gfar_read(&regs->maccfg1);
@ -1969,7 +2080,12 @@ static irqreturn_t gfar_error(int irq, void *dev_id)
u32 events = gfar_read(&priv->regs->ievent);
/* Clear IEVENT */
gfar_write(&priv->regs->ievent, IEVENT_ERR_MASK);
gfar_write(&priv->regs->ievent, events & IEVENT_ERR_MASK);
/* Magic Packet is not an error. */
if ((priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
(events & IEVENT_MAG))
events &= ~IEVENT_MAG;
/* Hmm... */
if (netif_msg_rx_err(priv) || netif_msg_tx_err(priv))
@ -2042,6 +2158,8 @@ MODULE_ALIAS("platform:fsl-gianfar");
static struct platform_driver gfar_driver = {
.probe = gfar_probe,
.remove = gfar_remove,
.suspend = gfar_suspend,
.resume = gfar_resume,
.driver = {
.name = "fsl-gianfar",
.owner = THIS_MODULE,

12
drivers/net/gianfar.h
View File

@ -168,6 +168,7 @@ extern const char gfar_driver_version[];
#define MACCFG2_GMII 0x00000200
#define MACCFG2_HUGEFRAME 0x00000020
#define MACCFG2_LENGTHCHECK 0x00000010
#define MACCFG2_MPEN 0x00000008
#define ECNTRL_INIT_SETTINGS 0x00001000
#define ECNTRL_TBI_MODE 0x00000020
@ -240,6 +241,7 @@ extern const char gfar_driver_version[];
#define IEVENT_CRL 0x00020000
#define IEVENT_XFUN 0x00010000
#define IEVENT_RXB0 0x00008000
#define IEVENT_MAG 0x00000800
#define IEVENT_GRSC 0x00000100
#define IEVENT_RXF0 0x00000080
#define IEVENT_FIR 0x00000008
@ -252,7 +254,8 @@ extern const char gfar_driver_version[];
#define IEVENT_ERR_MASK \
(IEVENT_RXC | IEVENT_BSY | IEVENT_EBERR | IEVENT_MSRO | \
IEVENT_BABT | IEVENT_TXC | IEVENT_TXE | IEVENT_LC \
| IEVENT_CRL | IEVENT_XFUN | IEVENT_DPE | IEVENT_PERR)
| IEVENT_CRL | IEVENT_XFUN | IEVENT_DPE | IEVENT_PERR \
| IEVENT_MAG)
#define IMASK_INIT_CLEAR 0x00000000
#define IMASK_BABR 0x80000000
@ -270,6 +273,7 @@ extern const char gfar_driver_version[];
#define IMASK_CRL 0x00020000
#define IMASK_XFUN 0x00010000
#define IMASK_RXB0 0x00008000
#define IMASK_MAG 0x00000800
#define IMASK_GTSC 0x00000100
#define IMASK_RXFEN0 0x00000080
#define IMASK_FIR 0x00000008
@ -737,10 +741,14 @@ struct gfar_private {
unsigned int fifo_starve;
unsigned int fifo_starve_off;
/* Bitfield update lock */
spinlock_t bflock;
unsigned char vlan_enable:1,
rx_csum_enable:1,
extended_hash:1,
bd_stash_en:1;
bd_stash_en:1,
wol_en:1; /* Wake-on-LAN enabled */
unsigned short padding;
unsigned int interruptTransmit;

41
drivers/net/gianfar_ethtool.c
View File

@ -479,14 +479,13 @@ static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rva
static int gfar_set_rx_csum(struct net_device *dev, uint32_t data)
{
struct gfar_private *priv = netdev_priv(dev);
unsigned long flags;
int err = 0;
if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
return -EOPNOTSUPP;
if (dev->flags & IFF_UP) {
unsigned long flags;
/* Halt TX and RX, and process the frames which
* have already been received */
spin_lock_irqsave(&priv->txlock, flags);
@ -502,7 +501,9 @@ static int gfar_set_rx_csum(struct net_device *dev, uint32_t data)
stop_gfar(dev);
}
spin_lock_irqsave(&priv->bflock, flags);
priv->rx_csum_enable = data;
spin_unlock_irqrestore(&priv->bflock, flags);
if (dev->flags & IFF_UP)
err = startup_gfar(dev);
@ -564,6 +565,38 @@ static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
priv->msg_enable = data;
}
#ifdef CONFIG_PM
static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
struct gfar_private *priv = netdev_priv(dev);
if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) {
wol->supported = WAKE_MAGIC;
wol->wolopts = priv->wol_en ? WAKE_MAGIC : 0;
} else {
wol->supported = wol->wolopts = 0;
}
}
static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
struct gfar_private *priv = netdev_priv(dev);
unsigned long flags;
if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
wol->wolopts != 0)
return -EINVAL;
if (wol->wolopts & ~WAKE_MAGIC)
return -EINVAL;
spin_lock_irqsave(&priv->bflock, flags);
priv->wol_en = wol->wolopts & WAKE_MAGIC ? 1 : 0;
spin_unlock_irqrestore(&priv->bflock, flags);
return 0;
}
#endif
const struct ethtool_ops gfar_ethtool_ops = {
.get_settings = gfar_gsettings,
@ -585,4 +618,8 @@ const struct ethtool_ops gfar_ethtool_ops = {
.set_tx_csum = gfar_set_tx_csum,
.get_msglevel = gfar_get_msglevel,
.set_msglevel = gfar_set_msglevel,
#ifdef CONFIG_PM
.get_wol = gfar_get_wol,
.set_wol = gfar_set_wol,
#endif
};

1
include/linux/fsl_devices.h
View File

@ -69,6 +69,7 @@ struct gianfar_mdio_data {
#define FSL_GIANFAR_DEV_HAS_VLAN 0x00000020
#define FSL_GIANFAR_DEV_HAS_EXTENDED_HASH 0x00000040
#define FSL_GIANFAR_DEV_HAS_PADDING 0x00000080
#define FSL_GIANFAR_DEV_HAS_MAGIC_PACKET 0x00000100
/* Flags in gianfar_platform_data */
#define FSL_GIANFAR_BRD_HAS_PHY_INTR 0x00000001 /* set or use a timer */