Commit c6686fe3 authored by Atsushi Nemoto's avatar Atsushi Nemoto Committed by Jeff Garzik

tc35815: Use generic PHY layer

Convert the tc35815 driver to use the generic PHY layer in
drivers/net/phy.  Also rename 'boardtype' to 'chiptype' which hould be
more appropriate.
Signed-off-by: default avatarAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent 22adf7e5
......@@ -1438,7 +1438,7 @@ config CS89x0
config TC35815
tristate "TOSHIBA TC35815 Ethernet support"
depends on NET_PCI && PCI && MIPS
select MII
select PHYLIB
config EEPRO100
tristate "EtherExpressPro/100 support (eepro100, original Becker driver)"
......
......@@ -23,9 +23,9 @@
*/
#ifdef TC35815_NAPI
#define DRV_VERSION "1.36-NAPI"
#define DRV_VERSION "1.37-NAPI"
#else
#define DRV_VERSION "1.36"
#define DRV_VERSION "1.37"
#endif
static const char *version = "tc35815.c:v" DRV_VERSION "\n";
#define MODNAME "tc35815"
......@@ -47,8 +47,8 @@ static const char *version = "tc35815.c:v" DRV_VERSION "\n";
#include <linux/skbuff.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/mii.h>
#include <linux/ethtool.h>
#include <linux/phy.h>
#include <linux/workqueue.h>
#include <linux/platform_device.h>
#include <asm/io.h>
#include <asm/byteorder.h>
......@@ -60,16 +60,16 @@ static const char *version = "tc35815.c:v" DRV_VERSION "\n";
#define WORKAROUND_100HALF_PROMISC
/* #define TC35815_USE_PACKEDBUFFER */
typedef enum {
enum tc35815_chiptype {
TC35815CF = 0,
TC35815_NWU,
TC35815_TX4939,
} board_t;
};
/* indexed by board_t, above */
/* indexed by tc35815_chiptype, above */
static const struct {
const char *name;
} board_info[] __devinitdata = {
} chip_info[] __devinitdata = {
{ "TOSHIBA TC35815CF 10/100BaseTX" },
{ "TOSHIBA TC35815 with Wake on LAN" },
{ "TOSHIBA TC35815/TX4939" },
......@@ -87,7 +87,6 @@ MODULE_DEVICE_TABLE (pci, tc35815_pci_tbl);
static struct tc35815_options {
int speed;
int duplex;
int doforce;
} options;
/*
......@@ -348,7 +347,7 @@ struct BDesc {
Int_STargAbtEn | \
Int_BLExEn | Int_FDAExEn) /* maybe 0xb7f*/
#define DMA_CTL_CMD DMA_BURST_SIZE
#define HAVE_DMA_RXALIGN(lp) likely((lp)->boardtype != TC35815CF)
#define HAVE_DMA_RXALIGN(lp) likely((lp)->chiptype != TC35815CF)
/* Tuning parameters */
#define DMA_BURST_SIZE 32
......@@ -401,16 +400,7 @@ struct FrFD {
#define TC35815_TX_TIMEOUT msecs_to_jiffies(400)
/* Timer state engine. */
enum tc35815_timer_state {
arbwait = 0, /* Waiting for auto negotiation to complete. */
lupwait = 1, /* Auto-neg complete, awaiting link-up status. */
ltrywait = 2, /* Forcing try of all modes, from fastest to slowest. */
asleep = 3, /* Time inactive. */
lcheck = 4, /* Check link status. */
};
/* Information that need to be kept for each board. */
/* Information that need to be kept for each controller. */
struct tc35815_local {
struct pci_dev *pci_dev;
......@@ -432,12 +422,12 @@ struct tc35815_local {
*/
spinlock_t lock;
int phy_addr;
int fullduplex;
unsigned short saved_lpa;
struct timer_list timer;
enum tc35815_timer_state timer_state; /* State of auto-neg timer. */
unsigned int timer_ticks; /* Number of clicks at each state */
struct mii_bus mii_bus;
struct phy_device *phy_dev;
int duplex;
int speed;
int link;
struct work_struct restart_work;
/*
* Transmitting: Batch Mode.
......@@ -475,10 +465,8 @@ struct tc35815_local {
dma_addr_t skb_dma;
} tx_skbs[TX_FD_NUM], rx_skbs[RX_BUF_NUM];
#endif
struct mii_if_info mii;
unsigned short mii_id[2];
u32 msg_enable;
board_t boardtype;
enum tc35815_chiptype chiptype;
};
static inline dma_addr_t fd_virt_to_bus(struct tc35815_local *lp, void *virt)
......@@ -586,19 +574,222 @@ static const struct ethtool_ops tc35815_ethtool_ops;
/* Example routines you must write ;->. */
static void tc35815_chip_reset(struct net_device *dev);
static void tc35815_chip_init(struct net_device *dev);
static void tc35815_find_phy(struct net_device *dev);
static void tc35815_phy_chip_init(struct net_device *dev);
#ifdef DEBUG
static void panic_queues(struct net_device *dev);
#endif
static void tc35815_timer(unsigned long data);
static void tc35815_start_auto_negotiation(struct net_device *dev,
struct ethtool_cmd *ep);
static int tc_mdio_read(struct net_device *dev, int phy_id, int location);
static void tc_mdio_write(struct net_device *dev, int phy_id, int location,
int val);
static void tc35815_restart_work(struct work_struct *work);
static int tc_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
{
struct net_device *dev = bus->priv;
struct tc35815_regs __iomem *tr =
(struct tc35815_regs __iomem *)dev->base_addr;
unsigned long timeout = jiffies + 10;
tc_writel(MD_CA_Busy | (mii_id << 5) | (regnum & 0x1f), &tr->MD_CA);
while (tc_readl(&tr->MD_CA) & MD_CA_Busy) {
if (time_after(jiffies, timeout))
return -EIO;
cpu_relax();
}
return tc_readl(&tr->MD_Data) & 0xffff;
}
static int tc_mdio_write(struct mii_bus *bus, int mii_id, int regnum, u16 val)
{
struct net_device *dev = bus->priv;
struct tc35815_regs __iomem *tr =
(struct tc35815_regs __iomem *)dev->base_addr;
unsigned long timeout = jiffies + 10;
tc_writel(val, &tr->MD_Data);
tc_writel(MD_CA_Busy | MD_CA_Wr | (mii_id << 5) | (regnum & 0x1f),
&tr->MD_CA);
while (tc_readl(&tr->MD_CA) & MD_CA_Busy) {
if (time_after(jiffies, timeout))
return -EIO;
cpu_relax();
}
return 0;
}
static void tc_handle_link_change(struct net_device *dev)
{
struct tc35815_local *lp = netdev_priv(dev);
struct phy_device *phydev = lp->phy_dev;
unsigned long flags;
int status_change = 0;
spin_lock_irqsave(&lp->lock, flags);
if (phydev->link &&
(lp->speed != phydev->speed || lp->duplex != phydev->duplex)) {
struct tc35815_regs __iomem *tr =
(struct tc35815_regs __iomem *)dev->base_addr;
u32 reg;
reg = tc_readl(&tr->MAC_Ctl);
reg |= MAC_HaltReq;
tc_writel(reg, &tr->MAC_Ctl);
if (phydev->duplex == DUPLEX_FULL)
reg |= MAC_FullDup;
else
reg &= ~MAC_FullDup;
tc_writel(reg, &tr->MAC_Ctl);
reg &= ~MAC_HaltReq;
tc_writel(reg, &tr->MAC_Ctl);
/*
* TX4939 PCFG.SPEEDn bit will be changed on
* NETDEV_CHANGE event.
*/
#if !defined(NO_CHECK_CARRIER) && defined(WORKAROUND_LOSTCAR)
/*
* WORKAROUND: enable LostCrS only if half duplex
* operation.
* (TX4939 does not have EnLCarr)
*/
if (phydev->duplex == DUPLEX_HALF &&
lp->chiptype != TC35815_TX4939)
tc_writel(tc_readl(&tr->Tx_Ctl) | Tx_EnLCarr,
&tr->Tx_Ctl);
#endif
lp->speed = phydev->speed;
lp->duplex = phydev->duplex;
status_change = 1;
}
if (phydev->link != lp->link) {
if (phydev->link) {
#ifdef WORKAROUND_100HALF_PROMISC
/* delayed promiscuous enabling */
if (dev->flags & IFF_PROMISC)
tc35815_set_multicast_list(dev);
#endif
netif_schedule(dev);
} else {
lp->speed = 0;
lp->duplex = -1;
}
lp->link = phydev->link;
status_change = 1;
}
spin_unlock_irqrestore(&lp->lock, flags);
if (status_change && netif_msg_link(lp)) {
phy_print_status(phydev);
#ifdef DEBUG
printk(KERN_DEBUG
"%s: MII BMCR %04x BMSR %04x LPA %04x\n",
dev->name,
phy_read(phydev, MII_BMCR),
phy_read(phydev, MII_BMSR),
phy_read(phydev, MII_LPA));
#endif
}
}
static int tc_mii_probe(struct net_device *dev)
{
struct tc35815_local *lp = netdev_priv(dev);
struct phy_device *phydev = NULL;
int phy_addr;
u32 dropmask;
/* find the first phy */
for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
if (lp->mii_bus.phy_map[phy_addr]) {
if (phydev) {
printk(KERN_ERR "%s: multiple PHYs found\n",
dev->name);
return -EINVAL;
}
phydev = lp->mii_bus.phy_map[phy_addr];
break;
}
}
if (!phydev) {
printk(KERN_ERR "%s: no PHY found\n", dev->name);
return -ENODEV;
}
/* attach the mac to the phy */
phydev = phy_connect(dev, phydev->dev.bus_id,
&tc_handle_link_change, 0,
lp->chiptype == TC35815_TX4939 ?
PHY_INTERFACE_MODE_RMII : PHY_INTERFACE_MODE_MII);
if (IS_ERR(phydev)) {
printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
return PTR_ERR(phydev);
}
printk(KERN_INFO "%s: attached PHY driver [%s] "
"(mii_bus:phy_addr=%s, id=%x)\n",
dev->name, phydev->drv->name, phydev->dev.bus_id,
phydev->phy_id);
/* mask with MAC supported features */
phydev->supported &= PHY_BASIC_FEATURES;
dropmask = 0;
if (options.speed == 10)
dropmask |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
else if (options.speed == 100)
dropmask |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
if (options.duplex == 1)
dropmask |= SUPPORTED_10baseT_Full | SUPPORTED_100baseT_Full;
else if (options.duplex == 2)
dropmask |= SUPPORTED_10baseT_Half | SUPPORTED_100baseT_Half;
phydev->supported &= ~dropmask;
phydev->advertising = phydev->supported;
lp->link = 0;
lp->speed = 0;
lp->duplex = -1;
lp->phy_dev = phydev;
return 0;
}
static int tc_mii_init(struct net_device *dev)
{
struct tc35815_local *lp = netdev_priv(dev);
int err;
int i;
lp->mii_bus.name = "tc35815_mii_bus";
lp->mii_bus.read = tc_mdio_read;
lp->mii_bus.write = tc_mdio_write;
lp->mii_bus.id = (lp->pci_dev->bus->number << 8) | lp->pci_dev->devfn;
lp->mii_bus.priv = dev;
lp->mii_bus.dev = &lp->pci_dev->dev;
lp->mii_bus.irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL);
if (!lp->mii_bus.irq) {
err = -ENOMEM;
goto err_out;
}
for (i = 0; i < PHY_MAX_ADDR; i++)
lp->mii_bus.irq[i] = PHY_POLL;
err = mdiobus_register(&lp->mii_bus);
if (err)
goto err_out_free_mdio_irq;
err = tc_mii_probe(dev);
if (err)
goto err_out_unregister_bus;
return 0;
err_out_unregister_bus:
mdiobus_unregister(&lp->mii_bus);
err_out_free_mdio_irq:
kfree(lp->mii_bus.irq);
err_out:
return err;
}
#ifdef CONFIG_CPU_TX49XX
/*
......@@ -669,8 +860,8 @@ static int __devinit tc35815_init_one (struct pci_dev *pdev,
if (!printed_version++) {
printk(version);
dev_printk(KERN_DEBUG, &pdev->dev,
"speed:%d duplex:%d doforce:%d\n",
options.speed, options.duplex, options.doforce);
"speed:%d duplex:%d\n",
options.speed, options.duplex);
}
if (!pdev->irq) {
......@@ -718,9 +909,10 @@ static int __devinit tc35815_init_one (struct pci_dev *pdev,
dev->irq = pdev->irq;
dev->base_addr = (unsigned long) ioaddr;
INIT_WORK(&lp->restart_work, tc35815_restart_work);
spin_lock_init(&lp->lock);
lp->pci_dev = pdev;
lp->boardtype = ent->driver_data;
lp->chiptype = ent->driver_data;
lp->msg_enable = NETIF_MSG_TX_ERR | NETIF_MSG_HW | NETIF_MSG_DRV | NETIF_MSG_LINK;
pci_set_drvdata(pdev, dev);
......@@ -741,24 +933,19 @@ static int __devinit tc35815_init_one (struct pci_dev *pdev,
memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
printk(KERN_INFO "%s: %s at 0x%lx, %s, IRQ %d\n",
dev->name,
board_info[ent->driver_data].name,
chip_info[ent->driver_data].name,
dev->base_addr,
print_mac(mac, dev->dev_addr),
dev->irq);
setup_timer(&lp->timer, tc35815_timer, (unsigned long) dev);
lp->mii.dev = dev;
lp->mii.mdio_read = tc_mdio_read;
lp->mii.mdio_write = tc_mdio_write;
lp->mii.phy_id_mask = 0x1f;
lp->mii.reg_num_mask = 0x1f;
tc35815_find_phy(dev);
lp->mii.phy_id = lp->phy_addr;
lp->mii.full_duplex = 0;
lp->mii.force_media = 0;
rc = tc_mii_init(dev);
if (rc)
goto err_out_unregister;
return 0;
err_out_unregister:
unregister_netdev(dev);
err_out:
free_netdev (dev);
return rc;
......@@ -768,7 +955,11 @@ static int __devinit tc35815_init_one (struct pci_dev *pdev,
static void __devexit tc35815_remove_one (struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata (pdev);
struct tc35815_local *lp = netdev_priv(dev);
phy_disconnect(lp->phy_dev);
mdiobus_unregister(&lp->mii_bus);
kfree(lp->mii_bus.irq);
unregister_netdev (dev);
free_netdev (dev);
......@@ -1098,20 +1289,14 @@ static int tc35815_tx_full(struct net_device *dev)
static void tc35815_restart(struct net_device *dev)
{
struct tc35815_local *lp = netdev_priv(dev);
int pid = lp->phy_addr;
int do_phy_reset = 1;
del_timer(&lp->timer); /* Kill if running */
if (lp->mii_id[0] == 0x0016 && (lp->mii_id[1] & 0xfc00) == 0xf800) {
/* Resetting PHY cause problem on some chip... (SEEQ 80221) */
do_phy_reset = 0;
}
if (do_phy_reset) {
if (lp->phy_dev) {
int timeout;
tc_mdio_write(dev, pid, MII_BMCR, BMCR_RESET);
phy_write(lp->phy_dev, MII_BMCR, BMCR_RESET);
timeout = 100;
while (--timeout) {
if (!(tc_mdio_read(dev, pid, MII_BMCR) & BMCR_RESET))
if (!(phy_read(lp->phy_dev, MII_BMCR) & BMCR_RESET))
break;
udelay(1);
}
......@@ -1119,45 +1304,53 @@ static void tc35815_restart(struct net_device *dev)
printk(KERN_ERR "%s: BMCR reset failed.\n", dev->name);
}
spin_lock_irq(&lp->lock);
tc35815_chip_reset(dev);
tc35815_clear_queues(dev);
tc35815_chip_init(dev);
/* Reconfigure CAM again since tc35815_chip_init() initialize it. */
tc35815_set_multicast_list(dev);
spin_unlock_irq(&lp->lock);
netif_wake_queue(dev);
}
static void tc35815_tx_timeout(struct net_device *dev)
static void tc35815_restart_work(struct work_struct *work)
{
struct tc35815_local *lp =
container_of(work, struct tc35815_local, restart_work);
struct net_device *dev = lp->dev;
tc35815_restart(dev);
}
static void tc35815_schedule_restart(struct net_device *dev)
{
struct tc35815_local *lp = netdev_priv(dev);
struct tc35815_regs __iomem *tr =
(struct tc35815_regs __iomem *)dev->base_addr;
/* disable interrupts */
tc_writel(0, &tr->Int_En);
tc_writel(tc_readl(&tr->DMA_Ctl) | DMA_IntMask, &tr->DMA_Ctl);
schedule_work(&lp->restart_work);
}
static void tc35815_tx_timeout(struct net_device *dev)
{
struct tc35815_regs __iomem *tr =
(struct tc35815_regs __iomem *)dev->base_addr;
printk(KERN_WARNING "%s: transmit timed out, status %#x\n",
dev->name, tc_readl(&tr->Tx_Stat));
/* Try to restart the adaptor. */
spin_lock_irq(&lp->lock);
tc35815_restart(dev);
spin_unlock_irq(&lp->lock);
tc35815_schedule_restart(dev);
dev->stats.tx_errors++;
/* If we have space available to accept new transmit
* requests, wake up the queueing layer. This would
* be the case if the chipset_init() call above just
* flushes out the tx queue and empties it.
*
* If instead, the tx queue is retained then the
* netif_wake_queue() call should be placed in the
* TX completion interrupt handler of the driver instead
* of here.
*/
if (!tc35815_tx_full(dev))
netif_wake_queue(dev);
}
/*
* Open/initialize the board. This is called (in the current kernel)
* Open/initialize the controller. This is called (in the current kernel)
* sometime after booting when the 'ifconfig' program is run.
*
* This routine should set everything up anew at each open, even
......@@ -1177,7 +1370,6 @@ tc35815_open(struct net_device *dev)
return -EAGAIN;
}
del_timer(&lp->timer); /* Kill if running */
tc35815_chip_reset(dev);
if (tc35815_init_queues(dev) != 0) {
......@@ -1194,6 +1386,9 @@ tc35815_open(struct net_device *dev)
tc35815_chip_init(dev);
spin_unlock_irq(&lp->lock);
/* schedule a link state check */
phy_start(lp->phy_dev);
/* We are now ready to accept transmit requeusts from
* the queueing layer of the networking.
*/
......@@ -1314,7 +1509,7 @@ static void tc35815_fatal_error_interrupt(struct net_device *dev, u32 status)
panic("%s: Too many fatal errors.", dev->name);
printk(KERN_WARNING "%s: Resetting ...\n", dev->name);
/* Try to restart the adaptor. */
tc35815_restart(dev);
tc35815_schedule_restart(dev);
}
#ifdef TC35815_NAPI
......@@ -1735,12 +1930,11 @@ tc35815_check_tx_stat(struct net_device *dev, int status)
#ifndef NO_CHECK_CARRIER
/* TX4939 does not have NCarr */
if (lp->boardtype == TC35815_TX4939)
if (lp->chiptype == TC35815_TX4939)
status &= ~Tx_NCarr;
#ifdef WORKAROUND_LOSTCAR
/* WORKAROUND: ignore LostCrS in full duplex operation */
if ((lp->timer_state != asleep && lp->timer_state != lcheck)
|| lp->fullduplex)
if (!lp->link || lp->duplex == DUPLEX_FULL)
status &= ~Tx_NCarr;
#endif
#endif
......@@ -1905,10 +2099,11 @@ tc35815_close(struct net_device *dev)
#ifdef TC35815_NAPI
napi_disable(&lp->napi);
#endif
if (lp->phy_dev)
phy_stop(lp->phy_dev);
cancel_work_sync(&lp->restart_work);
/* Flush the Tx and disable Rx here. */
del_timer(&lp->timer); /* Kill if running */
tc35815_chip_reset(dev);
free_irq(dev->irq, dev);
......@@ -1993,8 +2188,8 @@ tc35815_set_multicast_list(struct net_device *dev)
/* With some (all?) 100MHalf HUB, controller will hang
* if we enabled promiscuous mode before linkup... */
struct tc35815_local *lp = netdev_priv(dev);
int pid = lp->phy_addr;
if (!(tc_mdio_read(dev, pid, MII_BMSR) & BMSR_LSTATUS))
if (!lp->link)
return;
#endif
/* Enable promiscuous mode */
......@@ -2041,60 +2236,19 @@ static void tc35815_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *
static int tc35815_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct tc35815_local *lp = netdev_priv(dev);
spin_lock_irq(&lp->lock);
mii_ethtool_gset(&lp->mii, cmd);
spin_unlock_irq(&lp->lock);
return 0;
}
static int tc35815_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct tc35815_local *lp = netdev_priv(dev);
int rc;
#if 1 /* use our negotiation method... */
/* Verify the settings we care about. */
if (cmd->autoneg != AUTONEG_ENABLE &&
cmd->autoneg != AUTONEG_DISABLE)
return -EINVAL;
if (cmd->autoneg == AUTONEG_DISABLE &&
((cmd->speed != SPEED_100 &&
cmd->speed != SPEED_10) ||
(cmd->duplex != DUPLEX_HALF &&
cmd->duplex != DUPLEX_FULL)))
return -EINVAL;
/* Ok, do it to it. */
spin_lock_irq(&lp->lock);
del_timer(&lp->timer);
tc35815_start_auto_negotiation(dev, cmd);
spin_unlock_irq(&lp->lock);
rc = 0;
#else
spin_lock_irq(&lp->lock);
rc = mii_ethtool_sset(&lp->mii, cmd);
spin_unlock_irq(&lp->lock);
#endif
return rc;
if (!lp->phy_dev)
return -ENODEV;
return phy_ethtool_gset(lp->phy_dev, cmd);
}
static int tc35815_nway_reset(struct net_device *dev)
static int tc35815_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct tc35815_local *lp = netdev_priv(dev);
int rc;
spin_lock_irq(&lp->lock);
rc = mii_nway_restart(&lp->mii);
spin_unlock_irq(&lp->lock);
return rc;
}
static u32 tc35815_get_link(struct net_device *dev)
{
struct tc35815_local *lp = netdev_priv(dev);
int rc;
spin_lock_irq(&lp->lock);
rc = mii_link_ok(&lp->mii);
spin_unlock_irq(&lp->lock);
return rc;
if (!lp->phy_dev)
return -ENODEV;
return phy_ethtool_sset(lp->phy_dev, cmd);
}
static u32 tc35815_get_msglevel(struct net_device *dev)
......@@ -2148,8 +2302,7 @@ static const struct ethtool_ops tc35815_ethtool_ops = {
.get_drvinfo = tc35815_get_drvinfo,
.get_settings = tc35815_get_settings,
.set_settings = tc35815_set_settings,
.nway_reset = tc35815_nway_reset,
.get_link = tc35815_get_link,
.get_link = ethtool_op_get_link,
.get_msglevel = tc35815_get_msglevel,
.set_msglevel = tc35815_set_msglevel,
.get_strings = tc35815_get_strings,
......@@ -2160,610 +2313,12 @@ static const struct ethtool_ops tc35815_ethtool_ops = {
static int tc35815_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
struct tc35815_local *lp = netdev_priv(dev);
int rc;
if (!netif_running(dev))
return -EINVAL;
spin_lock_irq(&lp->lock);
rc = generic_mii_ioctl(&lp->mii, if_mii(rq), cmd, NULL);
spin_unlock_irq(&lp->lock);
return rc;
}
static int tc_mdio_read(struct net_device *dev, int phy_id, int location)
{
struct tc35815_regs __iomem *tr =
(struct tc35815_regs __iomem *)dev->base_addr;
u32 data;
tc_writel(MD_CA_Busy | (phy_id << 5) | location, &tr->MD_CA);
while (tc_readl(&tr->MD_CA) & MD_CA_Busy)
;
data = tc_readl(&tr->MD_Data);
return data & 0xffff;
}
static void tc_mdio_write(struct net_device *dev, int phy_id, int location,
int val)
{
struct tc35815_regs __iomem *tr =
(struct tc35815_regs __iomem *)dev->base_addr;
tc_writel(val, &tr->MD_Data);
tc_writel(MD_CA_Busy | MD_CA_Wr | (phy_id << 5) | location, &tr->MD_CA);
while (tc_readl(&tr->MD_CA) & MD_CA_Busy)
;
}
/* Auto negotiation. The scheme is very simple. We have a timer routine
* that keeps watching the auto negotiation process as it progresses.
* The DP83840 is first told to start doing it's thing, we set up the time
* and place the timer state machine in it's initial state.
*
* Here the timer peeks at the DP83840 status registers at each click to see
* if the auto negotiation has completed, we assume here that the DP83840 PHY
* will time out at some point and just tell us what (didn't) happen. For
* complete coverage we only allow so many of the ticks at this level to run,
* when this has expired we print a warning message and try another strategy.
* This "other" strategy is to force the interface into various speed/duplex
* configurations and we stop when we see a link-up condition before the
* maximum number of "peek" ticks have occurred.
*
* Once a valid link status has been detected we configure the BigMAC and
* the rest of the Happy Meal to speak the most efficient protocol we could
* get a clean link for. The priority for link configurations, highest first
* is:
* 100 Base-T Full Duplex
* 100 Base-T Half Duplex
* 10 Base-T Full Duplex
* 10 Base-T Half Duplex
*
* We start a new timer now, after a successful auto negotiation status has
* been detected. This timer just waits for the link-up bit to get set in
* the BMCR of the DP83840. When this occurs we print a kernel log message
* describing the link type in use and the fact that it is up.
*
* If a fatal error of some sort is signalled and detected in the interrupt
* service routine, and the chip is reset, or the link is ifconfig'd down
* and then back up, this entire process repeats itself all over again.
*/
/* Note: Above comments are come from sunhme driver. */
static int tc35815_try_next_permutation(struct net_device *dev)
{
struct tc35815_local *lp = netdev_priv(dev);
int pid = lp->phy_addr;
unsigned short bmcr;
bmcr = tc_mdio_read(dev, pid, MII_BMCR);
/* Downgrade from full to half duplex. Only possible via ethtool. */
if (bmcr & BMCR_FULLDPLX) {
bmcr &= ~BMCR_FULLDPLX;
printk(KERN_DEBUG "%s: try next permutation (BMCR %x)\n", dev->name, bmcr);
tc_mdio_write(dev, pid, MII_BMCR, bmcr);
return 0;
}
/* Downgrade from 100 to 10. */
if (bmcr & BMCR_SPEED100) {
bmcr &= ~BMCR_SPEED100;
printk(KERN_DEBUG "%s: try next permutation (BMCR %x)\n", dev->name, bmcr);
tc_mdio_write(dev, pid, MII_BMCR, bmcr);
return 0;
}
/* We've tried everything. */
return -1;
}
static void
tc35815_display_link_mode(struct net_device *dev)
{
struct tc35815_local *lp = netdev_priv(dev);
int pid = lp->phy_addr;
unsigned short lpa, bmcr;
char *speed = "", *duplex = "";
lpa = tc_mdio_read(dev, pid, MII_LPA);
bmcr = tc_mdio_read(dev, pid, MII_BMCR);
if (options.speed ? (bmcr & BMCR_SPEED100) : (lpa & (LPA_100HALF | LPA_100FULL)))
speed = "100Mb/s";
else
speed = "10Mb/s";
if (options.duplex ? (bmcr & BMCR_FULLDPLX) : (lpa & (LPA_100FULL | LPA_10FULL)))
duplex = "Full Duplex";
else
duplex = "Half Duplex";
if (netif_msg_link(lp))
printk(KERN_INFO "%s: Link is up at %s, %s.\n",
dev->name, speed, duplex);
printk(KERN_DEBUG "%s: MII BMCR %04x BMSR %04x LPA %04x\n",
dev->name,
bmcr, tc_mdio_read(dev, pid, MII_BMSR), lpa);
}
static void tc35815_display_forced_link_mode(struct net_device *dev)
{
struct tc35815_local *lp = netdev_priv(dev);
int pid = lp->phy_addr;
unsigned short bmcr;
char *speed = "", *duplex = "";
bmcr = tc_mdio_read(dev, pid, MII_BMCR);
if (bmcr & BMCR_SPEED100)
speed = "100Mb/s";
else
speed = "10Mb/s";
if (bmcr & BMCR_FULLDPLX)
duplex = "Full Duplex.\n";
else
duplex = "Half Duplex.\n";
if (netif_msg_link(lp))
printk(KERN_INFO "%s: Link has been forced up at %s, %s",
dev->name, speed, duplex);
}
static void tc35815_set_link_modes(struct net_device *dev)
{
struct tc35815_local *lp = netdev_priv(dev);
struct tc35815_regs __iomem *tr =
(struct tc35815_regs __iomem *)dev->base_addr;
int pid = lp->phy_addr;
unsigned short bmcr, lpa;
int speed;
if (lp->timer_state == arbwait) {
lpa = tc_mdio_read(dev, pid, MII_LPA);
bmcr = tc_mdio_read(dev, pid, MII_BMCR);
printk(KERN_DEBUG "%s: MII BMCR %04x BMSR %04x LPA %04x\n",
dev->name,
bmcr, tc_mdio_read(dev, pid, MII_BMSR), lpa);
if (!(lpa & (LPA_10HALF | LPA_10FULL |
LPA_100HALF | LPA_100FULL))) {
/* fall back to 10HALF */
printk(KERN_INFO "%s: bad ability %04x - falling back to 10HD.\n",
dev->name, lpa);
lpa = LPA_10HALF;
}
if (options.duplex ? (bmcr & BMCR_FULLDPLX) : (lpa & (LPA_100FULL | LPA_10FULL)))
lp->fullduplex = 1;
else
lp->fullduplex = 0;
if (options.speed ? (bmcr & BMCR_SPEED100) : (lpa & (LPA_100HALF | LPA_100FULL)))
speed = 100;
else
speed = 10;
} else {
/* Forcing a link mode. */
bmcr = tc_mdio_read(dev, pid, MII_BMCR);
if (bmcr & BMCR_FULLDPLX)
lp->fullduplex = 1;
else
lp->fullduplex = 0;
if (bmcr & BMCR_SPEED100)
speed = 100;
else
speed = 10;
}
tc_writel(tc_readl(&tr->MAC_Ctl) | MAC_HaltReq, &tr->MAC_Ctl);
if (lp->fullduplex) {
tc_writel(tc_readl(&tr->MAC_Ctl) | MAC_FullDup, &tr->MAC_Ctl);
} else {
tc_writel(tc_readl(&tr->MAC_Ctl) & ~MAC_FullDup, &tr->MAC_Ctl);
}
tc_writel(tc_readl(&tr->MAC_Ctl) & ~MAC_HaltReq, &tr->MAC_Ctl);
/* TX4939 PCFG.SPEEDn bit will be changed on NETDEV_CHANGE event. */
#ifndef NO_CHECK_CARRIER
/* TX4939 does not have EnLCarr */
if (lp->boardtype != TC35815_TX4939) {
#ifdef WORKAROUND_LOSTCAR
/* WORKAROUND: enable LostCrS only if half duplex operation */
if (!lp->fullduplex && lp->boardtype != TC35815_TX4939)
tc_writel(tc_readl(&tr->Tx_Ctl) | Tx_EnLCarr, &tr->Tx_Ctl);
#endif
}
#endif
lp->mii.full_duplex = lp->fullduplex;
}
static void tc35815_timer(unsigned long data)
{
struct net_device *dev = (struct net_device *)data;
struct tc35815_local *lp = netdev_priv(dev);
int pid = lp->phy_addr;
unsigned short bmsr, bmcr, lpa;
int restart_timer = 0;
spin_lock_irq(&lp->lock);
lp->timer_ticks++;
switch (lp->timer_state) {
case arbwait:
/*
* Only allow for 5 ticks, thats 10 seconds and much too
* long to wait for arbitration to complete.
*/
/* TC35815 need more times... */
if (lp->timer_ticks >= 10) {
/* Enter force mode. */
if (!options.doforce) {
printk(KERN_NOTICE "%s: Auto-Negotiation unsuccessful,"
" cable probblem?\n", dev->name);
/* Try to restart the adaptor. */
tc35815_restart(dev);
goto out;
}
printk(KERN_NOTICE "%s: Auto-Negotiation unsuccessful,"
" trying force link mode\n", dev->name);
printk(KERN_DEBUG "%s: BMCR %x BMSR %x\n", dev->name,
tc_mdio_read(dev, pid, MII_BMCR),
tc_mdio_read(dev, pid, MII_BMSR));
bmcr = BMCR_SPEED100;
tc_mdio_write(dev, pid, MII_BMCR, bmcr);
/*
* OK, seems we need do disable the transceiver
* for the first tick to make sure we get an
* accurate link state at the second tick.
*/
lp->timer_state = ltrywait;
lp->timer_ticks = 0;
restart_timer = 1;
} else {
/* Anything interesting happen? */
bmsr = tc_mdio_read(dev, pid, MII_BMSR);
if (bmsr & BMSR_ANEGCOMPLETE) {
/* Just what we've been waiting for... */
tc35815_set_link_modes(dev);
/*
* Success, at least so far, advance our state
* engine.
*/
lp->timer_state = lupwait;
restart_timer = 1;
} else {
restart_timer = 1;
}
}
break;
case lupwait:
/*
* Auto negotiation was successful and we are awaiting a
* link up status. I have decided to let this timer run
* forever until some sort of error is signalled, reporting
* a message to the user at 10 second intervals.
*/
bmsr = tc_mdio_read(dev, pid, MII_BMSR);
if (bmsr & BMSR_LSTATUS) {
/*
* Wheee, it's up, display the link mode in use and put
* the timer to sleep.
*/
tc35815_display_link_mode(dev);
netif_carrier_on(dev);
#ifdef WORKAROUND_100HALF_PROMISC
/* delayed promiscuous enabling */
if (dev->flags & IFF_PROMISC)
tc35815_set_multicast_list(dev);
#endif
#if 1
lp->saved_lpa = tc_mdio_read(dev, pid, MII_LPA);
lp->timer_state = lcheck;
restart_timer = 1;
#else
lp->timer_state = asleep;
restart_timer = 0;
#endif
} else {
if (lp->timer_ticks >= 10) {
printk(KERN_NOTICE "%s: Auto negotiation successful, link still "
"not completely up.\n", dev->name);
lp->timer_ticks = 0;
restart_timer = 1;
} else {
restart_timer = 1;
}
}
break;
case ltrywait:
/*
* Making the timeout here too long can make it take
* annoyingly long to attempt all of the link mode
* permutations, but then again this is essentially
* error recovery code for the most part.
*/
bmsr = tc_mdio_read(dev, pid, MII_BMSR);
bmcr = tc_mdio_read(dev, pid, MII_BMCR);
if (lp->timer_ticks == 1) {
/*
* Re-enable transceiver, we'll re-enable the
* transceiver next tick, then check link state
* on the following tick.
*/
restart_timer = 1;
break;
}
if (lp->timer_ticks == 2) {
restart_timer = 1;
break;
}
if (bmsr & BMSR_LSTATUS) {
/* Force mode selection success. */
tc35815_display_forced_link_mode(dev);
netif_carrier_on(dev);
tc35815_set_link_modes(dev);
#ifdef WORKAROUND_100HALF_PROMISC
/* delayed promiscuous enabling */
if (dev->flags & IFF_PROMISC)
tc35815_set_multicast_list(dev);
#endif
#if 1
lp->saved_lpa = tc_mdio_read(dev, pid, MII_LPA);
lp->timer_state = lcheck;
restart_timer = 1;
#else
lp->timer_state = asleep;
restart_timer = 0;
#endif
} else {
if (lp->timer_ticks >= 4) { /* 6 seconds or so... */
int ret;
ret = tc35815_try_next_permutation(dev);
if (ret == -1) {
/*
* Aieee, tried them all, reset the
* chip and try all over again.
*/
printk(KERN_NOTICE "%s: Link down, "
"cable problem?\n",
dev->name);
/* Try to restart the adaptor. */
tc35815_restart(dev);
goto out;
}
lp->timer_ticks = 0;
restart_timer = 1;
} else {
restart_timer = 1;
}
}
break;
case lcheck:
bmcr = tc_mdio_read(dev, pid, MII_BMCR);
lpa = tc_mdio_read(dev, pid, MII_LPA);
if (bmcr & (BMCR_PDOWN | BMCR_ISOLATE | BMCR_RESET)) {
printk(KERN_ERR "%s: PHY down? (BMCR %x)\n", dev->name,
bmcr);
} else if ((lp->saved_lpa ^ lpa) &
(LPA_100FULL|LPA_100HALF|LPA_10FULL|LPA_10HALF)) {
printk(KERN_NOTICE "%s: link status changed"
" (BMCR %x LPA %x->%x)\n", dev->name,
bmcr, lp->saved_lpa, lpa);
} else {
/* go on */
restart_timer = 1;
break;
}
/* Try to restart the adaptor. */
tc35815_restart(dev);
goto out;
case asleep:
default:
/* Can't happens.... */
printk(KERN_ERR "%s: Aieee, link timer is asleep but we got "
"one anyways!\n", dev->name);
restart_timer = 0;
lp->timer_ticks = 0;
lp->timer_state = asleep; /* foo on you */
break;
}
if (restart_timer) {
lp->timer.expires = jiffies + msecs_to_jiffies(1200);
add_timer(&lp->timer);
}
out:
spin_unlock_irq(&lp->lock);
}
static void tc35815_start_auto_negotiation(struct net_device *dev,
struct ethtool_cmd *ep)
{
struct tc35815_local *lp = netdev_priv(dev);
int pid = lp->phy_addr;
unsigned short bmsr, bmcr, advertize;
int timeout;
netif_carrier_off(dev);
bmsr = tc_mdio_read(dev, pid, MII_BMSR);
bmcr = tc_mdio_read(dev, pid, MII_BMCR);
advertize = tc_mdio_read(dev, pid, MII_ADVERTISE);
if (ep == NULL || ep->autoneg == AUTONEG_ENABLE) {
if (options.speed || options.duplex) {
/* Advertise only specified configuration. */
advertize &= ~(ADVERTISE_10HALF |
ADVERTISE_10FULL |
ADVERTISE_100HALF |
ADVERTISE_100FULL);
if (options.speed != 10) {
if (options.duplex != 1)
advertize |= ADVERTISE_100FULL;
if (options.duplex != 2)
advertize |= ADVERTISE_100HALF;
}
if (options.speed != 100) {
if (options.duplex != 1)
advertize |= ADVERTISE_10FULL;
if (options.duplex != 2)
advertize |= ADVERTISE_10HALF;
}
if (options.speed == 100)
bmcr |= BMCR_SPEED100;
else if (options.speed == 10)
bmcr &= ~BMCR_SPEED100;
if (options.duplex == 2)
bmcr |= BMCR_FULLDPLX;
else if (options.duplex == 1)
bmcr &= ~BMCR_FULLDPLX;
} else {
/* Advertise everything we can support. */
if (bmsr & BMSR_10HALF)
advertize |= ADVERTISE_10HALF;
else
advertize &= ~ADVERTISE_10HALF;
if (bmsr & BMSR_10FULL)
advertize |= ADVERTISE_10FULL;
else
advertize &= ~ADVERTISE_10FULL;
if (bmsr & BMSR_100HALF)
advertize |= ADVERTISE_100HALF;
else
advertize &= ~ADVERTISE_100HALF;
if (bmsr & BMSR_100FULL)
advertize |= ADVERTISE_100FULL;
else
advertize &= ~ADVERTISE_100FULL;
}
tc_mdio_write(dev, pid, MII_ADVERTISE, advertize);
/* Enable Auto-Negotiation, this is usually on already... */
bmcr |= BMCR_ANENABLE;
tc_mdio_write(dev, pid, MII_BMCR, bmcr);
/* Restart it to make sure it is going. */
bmcr |= BMCR_ANRESTART;
tc_mdio_write(dev, pid, MII_BMCR, bmcr);
printk(KERN_DEBUG "%s: ADVERTISE %x BMCR %x\n", dev->name, advertize, bmcr);
/* BMCR_ANRESTART self clears when the process has begun. */
timeout = 64; /* More than enough. */
while (--timeout) {
bmcr = tc_mdio_read(dev, pid, MII_BMCR);
if (!(bmcr & BMCR_ANRESTART))
break; /* got it. */
udelay(10);
}
if (!timeout) {
printk(KERN_ERR "%s: TC35815 would not start auto "
"negotiation BMCR=0x%04x\n",
dev->name, bmcr);
printk(KERN_NOTICE "%s: Performing force link "
"detection.\n", dev->name);
goto force_link;
} else {
printk(KERN_DEBUG "%s: auto negotiation started.\n", dev->name);
lp->timer_state = arbwait;
}
} else {
force_link:
/* Force the link up, trying first a particular mode.
* Either we are here at the request of ethtool or
* because the Happy Meal would not start to autoneg.
*/
/* Disable auto-negotiation in BMCR, enable the duplex and
* speed setting, init the timer state machine, and fire it off.
*/
if (ep == NULL || ep->autoneg == AUTONEG_ENABLE) {
bmcr = BMCR_SPEED100;
} else {
if (ep->speed == SPEED_100)
bmcr = BMCR_SPEED100;
else
bmcr = 0;
if (ep->duplex == DUPLEX_FULL)
bmcr |= BMCR_FULLDPLX;
}
tc_mdio_write(dev, pid, MII_BMCR, bmcr);
/* OK, seems we need do disable the transceiver for the first
* tick to make sure we get an accurate link state at the
* second tick.
*/
lp->timer_state = ltrywait;
}
del_timer(&lp->timer);
lp->timer_ticks = 0;
lp->timer.expires = jiffies + msecs_to_jiffies(1200);
add_timer(&lp->timer);
}
static void tc35815_find_phy(struct net_device *dev)
{
struct tc35815_local *lp = netdev_priv(dev);
int pid = lp->phy_addr;
unsigned short id0;
/* find MII phy */
for (pid = 31; pid >= 0; pid--) {
id0 = tc_mdio_read(dev, pid, MII_BMSR);
if (id0 != 0xffff && id0 != 0x0000 &&
(id0 & BMSR_RESV) != (0xffff & BMSR_RESV) /* paranoia? */
) {
lp->phy_addr = pid;
break;
}
}
if (pid < 0) {
printk(KERN_ERR "%s: No MII Phy found.\n",
dev->name);
lp->phy_addr = pid = 0;
}
lp->mii_id[0] = tc_mdio_read(dev, pid, MII_PHYSID1);
lp->mii_id[1] = tc_mdio_read(dev, pid, MII_PHYSID2);
if (netif_msg_hw(lp))
printk(KERN_INFO "%s: PHY(%02x) ID %04x %04x\n", dev->name,
pid, lp->mii_id[0], lp->mii_id[1]);
}
static void tc35815_phy_chip_init(struct net_device *dev)
{
struct tc35815_local *lp = netdev_priv(dev);
int pid = lp->phy_addr;
unsigned short bmcr;
struct ethtool_cmd ecmd, *ep;
/* dis-isolate if needed. */
bmcr = tc_mdio_read(dev, pid, MII_BMCR);
if (bmcr & BMCR_ISOLATE) {
int count = 32;
printk(KERN_DEBUG "%s: unisolating...", dev->name);
tc_mdio_write(dev, pid, MII_BMCR, bmcr & ~BMCR_ISOLATE);
while (--count) {
if (!(tc_mdio_read(dev, pid, MII_BMCR) & BMCR_ISOLATE))
break;
udelay(20);
}
printk(" %s.\n", count ? "done" : "failed");
}
if (options.speed && options.duplex) {
ecmd.autoneg = AUTONEG_DISABLE;
ecmd.speed = options.speed == 10 ? SPEED_10 : SPEED_100;
ecmd.duplex = options.duplex == 1 ? DUPLEX_HALF : DUPLEX_FULL;
ep = &ecmd;
} else {
ep = NULL;
}
tc35815_start_auto_negotiation(dev, ep);
if (!lp->phy_dev)
return -ENODEV;
return phy_mii_ioctl(lp->phy_dev, if_mii(rq), cmd);
}
static void tc35815_chip_reset(struct net_device *dev)
......@@ -2815,8 +2370,6 @@ static void tc35815_chip_init(struct net_device *dev)
(struct tc35815_regs __iomem *)dev->base_addr;
unsigned long txctl = TX_CTL_CMD;
tc35815_phy_chip_init(dev);
/* load station address to CAM */
tc35815_set_cam_entry(dev, CAM_ENTRY_SOURCE, dev->dev_addr);
......@@ -2853,12 +2406,11 @@ static void tc35815_chip_init(struct net_device *dev)
/* start MAC transmitter */
#ifndef NO_CHECK_CARRIER
/* TX4939 does not have EnLCarr */
if (lp->boardtype == TC35815_TX4939)
if (lp->chiptype == TC35815_TX4939)
txctl &= ~Tx_EnLCarr;
#ifdef WORKAROUND_LOSTCAR
/* WORKAROUND: ignore LostCrS in full duplex operation */
if ((lp->timer_state != asleep && lp->timer_state != lcheck) ||
lp->fullduplex)
if (!lp->phy_dev || !lp->link || lp->duplex == DUPLEX_FULL)
txctl &= ~Tx_EnLCarr;
#endif
#endif /* !NO_CHECK_CARRIER */
......@@ -2879,8 +2431,9 @@ static int tc35815_suspend(struct pci_dev *pdev, pm_message_t state)
if (!netif_running(dev))
return 0;
netif_device_detach(dev);
if (lp->phy_dev)
phy_stop(lp->phy_dev);
spin_lock_irqsave(&lp->lock, flags);
del_timer(&lp->timer); /* Kill if running */
tc35815_chip_reset(dev);
spin_unlock_irqrestore(&lp->lock, flags);
pci_set_power_state(pdev, PCI_D3hot);
......@@ -2891,15 +2444,14 @@ static int tc35815_resume(struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);
struct tc35815_local *lp = netdev_priv(dev);
unsigned long flags;
pci_restore_state(pdev);
if (!netif_running(dev))
return 0;
pci_set_power_state(pdev, PCI_D0);
spin_lock_irqsave(&lp->lock, flags);
tc35815_restart(dev);
spin_unlock_irqrestore(&lp->lock, flags);
if (lp->phy_dev)
phy_start(lp->phy_dev);
netif_device_attach(dev);
return 0;
}
......@@ -2920,8 +2472,6 @@ module_param_named(speed, options.speed, int, 0);
MODULE_PARM_DESC(speed, "0:auto, 10:10Mbps, 100:100Mbps");
module_param_named(duplex, options.duplex, int, 0);
MODULE_PARM_DESC(duplex, "0:auto, 1:half, 2:full");
module_param_named(doforce, options.doforce, int, 0);
MODULE_PARM_DESC(doforce, "try force link mode if auto-negotiation failed");
static int __init tc35815_init_module(void)
{
......
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