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Commit f3e438f0 authored by David S. Miller's avatar David S. Miller
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Merge branch 'davem-next.via-rhine' of git://violet.fr.zoreil.com/romieu/linux

parents e4e11180 e92b9b3b
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Showing with 368 additions and 300 deletions
drivers/net/ethernet/via/via-rhine.c
View file @ f3e438f0
......@@ -39,10 +39,9 @@
/* A few user-configurable values.
These may be modified when a driver module is loaded. */
#define DEBUG
static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */
static int max_interrupt_work = 20;
static int debug = 0;
#define RHINE_MSG_DEFAULT \
(0x0000)
/* Set the copy breakpoint for the copy-only-tiny-frames scheme.
Setting to > 1518 effectively disables this feature. */
......@@ -128,12 +127,10 @@ MODULE_AUTHOR("Donald Becker <becker@scyld.com>");
MODULE_DESCRIPTION("VIA Rhine PCI Fast Ethernet driver");
MODULE_LICENSE("GPL");
module_param(max_interrupt_work, int, 0);
module_param(debug, int, 0);
module_param(rx_copybreak, int, 0);
module_param(avoid_D3, bool, 0);
MODULE_PARM_DESC(max_interrupt_work, "VIA Rhine maximum events handled per interrupt");
MODULE_PARM_DESC(debug, "VIA Rhine debug level (0-7)");
MODULE_PARM_DESC(debug, "VIA Rhine debug message flags");
MODULE_PARM_DESC(rx_copybreak, "VIA Rhine copy breakpoint for copy-only-tiny-frames");
MODULE_PARM_DESC(avoid_D3, "Avoid power state D3 (work-around for broken BIOSes)");
......@@ -351,16 +348,25 @@ static const int mmio_verify_registers[] = {
/* Bits in the interrupt status/mask registers. */
enum intr_status_bits {
IntrRxDone=0x0001, IntrRxErr=0x0004, IntrRxEmpty=0x0020,
IntrTxDone=0x0002, IntrTxError=0x0008, IntrTxUnderrun=0x0210,
IntrPCIErr=0x0040,
IntrStatsMax=0x0080, IntrRxEarly=0x0100,
IntrRxOverflow=0x0400, IntrRxDropped=0x0800, IntrRxNoBuf=0x1000,
IntrTxAborted=0x2000, IntrLinkChange=0x4000,
IntrRxWakeUp=0x8000,
IntrNormalSummary=0x0003, IntrAbnormalSummary=0xC260,
IntrTxDescRace=0x080000, /* mapped from IntrStatus2 */
IntrTxErrSummary=0x082218,
IntrRxDone = 0x0001,
IntrTxDone = 0x0002,
IntrRxErr = 0x0004,
IntrTxError = 0x0008,
IntrRxEmpty = 0x0020,
IntrPCIErr = 0x0040,
IntrStatsMax = 0x0080,
IntrRxEarly = 0x0100,
IntrTxUnderrun = 0x0210,
IntrRxOverflow = 0x0400,
IntrRxDropped = 0x0800,
IntrRxNoBuf = 0x1000,
IntrTxAborted = 0x2000,
IntrLinkChange = 0x4000,
IntrRxWakeUp = 0x8000,
IntrTxDescRace = 0x080000, /* mapped from IntrStatus2 */
IntrNormalSummary = IntrRxDone | IntrTxDone,
IntrTxErrSummary = IntrTxDescRace | IntrTxAborted | IntrTxError |
IntrTxUnderrun,
};
/* Bits in WOLcrSet/WOLcrClr and PwrcsrSet/PwrcsrClr */
......@@ -439,8 +445,13 @@ struct rhine_private {
struct net_device *dev;
struct napi_struct napi;
spinlock_t lock;
struct mutex task_lock;
bool task_enable;
struct work_struct slow_event_task;
struct work_struct reset_task;
u32 msg_enable;
/* Frequently used values: keep some adjacent for cache effect. */
u32 quirks;
struct rx_desc *rx_head_desc;
......@@ -476,41 +487,50 @@ static int mdio_read(struct net_device *dev, int phy_id, int location);
static void mdio_write(struct net_device *dev, int phy_id, int location, int value);
static int rhine_open(struct net_device *dev);
static void rhine_reset_task(struct work_struct *work);
static void rhine_slow_event_task(struct work_struct *work);
static void rhine_tx_timeout(struct net_device *dev);
static netdev_tx_t rhine_start_tx(struct sk_buff *skb,
struct net_device *dev);
static irqreturn_t rhine_interrupt(int irq, void *dev_instance);
static void rhine_tx(struct net_device *dev);
static int rhine_rx(struct net_device *dev, int limit);
static void rhine_error(struct net_device *dev, int intr_status);
static void rhine_set_rx_mode(struct net_device *dev);
static struct net_device_stats *rhine_get_stats(struct net_device *dev);
static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
static const struct ethtool_ops netdev_ethtool_ops;
static int rhine_close(struct net_device *dev);
static void rhine_shutdown (struct pci_dev *pdev);
static int rhine_vlan_rx_add_vid(struct net_device *dev, unsigned short vid);
static int rhine_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid);
static void rhine_set_cam(void __iomem *ioaddr, int idx, u8 *addr);
static void rhine_set_vlan_cam(void __iomem *ioaddr, int idx, u8 *addr);
static void rhine_set_cam_mask(void __iomem *ioaddr, u32 mask);
static void rhine_set_vlan_cam_mask(void __iomem *ioaddr, u32 mask);
static void rhine_init_cam_filter(struct net_device *dev);
static void rhine_update_vcam(struct net_device *dev);
#define RHINE_WAIT_FOR(condition) \
do { \
int i = 1024; \
while (!(condition) && --i) \
; \
if (debug > 1 && i < 512) \
pr_info("%4d cycles used @ %s:%d\n", \
1024 - i, __func__, __LINE__); \
} while (0)
static inline u32 get_intr_status(struct net_device *dev)
static void rhine_restart_tx(struct net_device *dev);
static void rhine_wait_bit(struct rhine_private *rp, u8 reg, u8 mask, bool high)
{
void __iomem *ioaddr = rp->base;
int i;
for (i = 0; i < 1024; i++) {
if (high ^ !!(ioread8(ioaddr + reg) & mask))
break;
udelay(10);
}
if (i > 64) {
netif_dbg(rp, hw, rp->dev, "%s bit wait (%02x/%02x) cycle "
"count: %04d\n", high ? "high" : "low", reg, mask, i);
}
}
static void rhine_wait_bit_high(struct rhine_private *rp, u8 reg, u8 mask)
{
rhine_wait_bit(rp, reg, mask, true);
}
static void rhine_wait_bit_low(struct rhine_private *rp, u8 reg, u8 mask)
{
rhine_wait_bit(rp, reg, mask, false);
}
static u32 rhine_get_events(struct rhine_private *rp)
{
struct rhine_private *rp = netdev_priv(dev);
void __iomem *ioaddr = rp->base;
u32 intr_status;
......@@ -521,6 +541,16 @@ static inline u32 get_intr_status(struct net_device *dev)
return intr_status;
}
static void rhine_ack_events(struct rhine_private *rp, u32 mask)
{
void __iomem *ioaddr = rp->base;
if (rp->quirks & rqStatusWBRace)
iowrite8(mask >> 16, ioaddr + IntrStatus2);
iowrite16(mask, ioaddr + IntrStatus);
mmiowb();
}
/*
* Get power related registers into sane state.
* Notify user about past WOL event.
......@@ -585,6 +615,7 @@ static void rhine_chip_reset(struct net_device *dev)
{
struct rhine_private *rp = netdev_priv(dev);
void __iomem *ioaddr = rp->base;
u8 cmd1;
iowrite8(Cmd1Reset, ioaddr + ChipCmd1);
IOSYNC;
......@@ -597,12 +628,11 @@ static void rhine_chip_reset(struct net_device *dev)
iowrite8(0x40, ioaddr + MiscCmd);
/* Reset can take somewhat longer (rare) */
RHINE_WAIT_FOR(!(ioread8(ioaddr + ChipCmd1) & Cmd1Reset));
rhine_wait_bit_low(rp, ChipCmd1, Cmd1Reset);
}
if (debug > 1)
netdev_info(dev, "Reset %s\n",
(ioread8(ioaddr + ChipCmd1) & Cmd1Reset) ?
cmd1 = ioread8(ioaddr + ChipCmd1);
netif_info(rp, hw, dev, "Reset %s\n", (cmd1 & Cmd1Reset) ?
"failed" : "succeeded");
}
......@@ -629,9 +659,15 @@ static void __devinit rhine_reload_eeprom(long pioaddr, struct net_device *dev)
{
struct rhine_private *rp = netdev_priv(dev);
void __iomem *ioaddr = rp->base;
int i;
outb(0x20, pioaddr + MACRegEEcsr);
RHINE_WAIT_FOR(!(inb(pioaddr + MACRegEEcsr) & 0x20));
for (i = 0; i < 1024; i++) {
if (!(inb(pioaddr + MACRegEEcsr) & 0x20))
break;
}
if (i > 512)
pr_info("%4d cycles used @ %s:%d\n", i, __func__, __LINE__);
#ifdef USE_MMIO
/*
......@@ -657,23 +693,127 @@ static void rhine_poll(struct net_device *dev)
}
#endif
static void rhine_kick_tx_threshold(struct rhine_private *rp)
{
if (rp->tx_thresh < 0xe0) {
void __iomem *ioaddr = rp->base;
rp->tx_thresh += 0x20;
BYTE_REG_BITS_SET(rp->tx_thresh, 0x80, ioaddr + TxConfig);
}
}
static void rhine_tx_err(struct rhine_private *rp, u32 status)
{
struct net_device *dev = rp->dev;
if (status & IntrTxAborted) {
netif_info(rp, tx_err, dev,
"Abort %08x, frame dropped\n", status);
}
if (status & IntrTxUnderrun) {
rhine_kick_tx_threshold(rp);
netif_info(rp, tx_err ,dev, "Transmitter underrun, "
"Tx threshold now %02x\n", rp->tx_thresh);
}
if (status & IntrTxDescRace)
netif_info(rp, tx_err, dev, "Tx descriptor write-back race\n");
if ((status & IntrTxError) &&
(status & (IntrTxAborted | IntrTxUnderrun | IntrTxDescRace)) == 0) {
rhine_kick_tx_threshold(rp);
netif_info(rp, tx_err, dev, "Unspecified error. "
"Tx threshold now %02x\n", rp->tx_thresh);
}
rhine_restart_tx(dev);
}
static void rhine_update_rx_crc_and_missed_errord(struct rhine_private *rp)
{
void __iomem *ioaddr = rp->base;
struct net_device_stats *stats = &rp->dev->stats;
stats->rx_crc_errors += ioread16(ioaddr + RxCRCErrs);
stats->rx_missed_errors += ioread16(ioaddr + RxMissed);
/*
* Clears the "tally counters" for CRC errors and missed frames(?).
* It has been reported that some chips need a write of 0 to clear
* these, for others the counters are set to 1 when written to and
* instead cleared when read. So we clear them both ways ...
*/
iowrite32(0, ioaddr + RxMissed);
ioread16(ioaddr + RxCRCErrs);
ioread16(ioaddr + RxMissed);
}
#define RHINE_EVENT_NAPI_RX (IntrRxDone | \
IntrRxErr | \
IntrRxEmpty | \
IntrRxOverflow | \
IntrRxDropped | \
IntrRxNoBuf | \
IntrRxWakeUp)
#define RHINE_EVENT_NAPI_TX_ERR (IntrTxError | \
IntrTxAborted | \
IntrTxUnderrun | \
IntrTxDescRace)
#define RHINE_EVENT_NAPI_TX (IntrTxDone | RHINE_EVENT_NAPI_TX_ERR)
#define RHINE_EVENT_NAPI (RHINE_EVENT_NAPI_RX | \
RHINE_EVENT_NAPI_TX | \
IntrStatsMax)
#define RHINE_EVENT_SLOW (IntrPCIErr | IntrLinkChange)
#define RHINE_EVENT (RHINE_EVENT_NAPI | RHINE_EVENT_SLOW)
static int rhine_napipoll(struct napi_struct *napi, int budget)
{
struct rhine_private *rp = container_of(napi, struct rhine_private, napi);
struct net_device *dev = rp->dev;
void __iomem *ioaddr = rp->base;
int work_done;
u16 enable_mask = RHINE_EVENT & 0xffff;
int work_done = 0;
u32 status;
work_done = rhine_rx(dev, budget);
status = rhine_get_events(rp);
rhine_ack_events(rp, status & ~RHINE_EVENT_SLOW);
if (status & RHINE_EVENT_NAPI_RX)
work_done += rhine_rx(dev, budget);
if (status & RHINE_EVENT_NAPI_TX) {
if (status & RHINE_EVENT_NAPI_TX_ERR) {
/* Avoid scavenging before Tx engine turned off */
rhine_wait_bit_low(rp, ChipCmd, CmdTxOn);
if (ioread8(ioaddr + ChipCmd) & CmdTxOn)
netif_warn(rp, tx_err, dev, "Tx still on\n");
}
rhine_tx(dev);
if (status & RHINE_EVENT_NAPI_TX_ERR)
rhine_tx_err(rp, status);
}
if (status & IntrStatsMax) {
spin_lock(&rp->lock);
rhine_update_rx_crc_and_missed_errord(rp);
spin_unlock(&rp->lock);
}
if (status & RHINE_EVENT_SLOW) {
enable_mask &= ~RHINE_EVENT_SLOW;
schedule_work(&rp->slow_event_task);
}
if (work_done < budget) {
napi_complete(napi);
iowrite16(IntrRxDone | IntrRxErr | IntrRxEmpty| IntrRxOverflow |
IntrRxDropped | IntrRxNoBuf | IntrTxAborted |
IntrTxDone | IntrTxError | IntrTxUnderrun |
IntrPCIErr | IntrStatsMax | IntrLinkChange,
ioaddr + IntrEnable);
iowrite16(enable_mask, ioaddr + IntrEnable);
mmiowb();
}
return work_done;
}
......@@ -797,6 +937,7 @@ static int __devinit rhine_init_one(struct pci_dev *pdev,
rp->quirks = quirks;
rp->pioaddr = pioaddr;
rp->pdev = pdev;
rp->msg_enable = netif_msg_init(debug, RHINE_MSG_DEFAULT);
rc = pci_request_regions(pdev, DRV_NAME);
if (rc)
......@@ -856,7 +997,9 @@ static int __devinit rhine_init_one(struct pci_dev *pdev,
dev->irq = pdev->irq;
spin_lock_init(&rp->lock);
mutex_init(&rp->task_lock);
INIT_WORK(&rp->reset_task, rhine_reset_task);
INIT_WORK(&rp->slow_event_task, rhine_slow_event_task);
rp->mii_if.dev = dev;
rp->mii_if.mdio_read = mdio_read;
......@@ -916,8 +1059,8 @@ static int __devinit rhine_init_one(struct pci_dev *pdev,
}
}
rp->mii_if.phy_id = phy_id;
if (debug > 1 && avoid_D3)
netdev_info(dev, "No D3 power state at shutdown\n");
if (avoid_D3)
netif_info(rp, probe, dev, "No D3 power state at shutdown\n");
return 0;
......@@ -1093,7 +1236,7 @@ static void rhine_check_media(struct net_device *dev, unsigned int init_media)
struct rhine_private *rp = netdev_priv(dev);
void __iomem *ioaddr = rp->base;
mii_check_media(&rp->mii_if, debug, init_media);
mii_check_media(&rp->mii_if, netif_msg_link(rp), init_media);
if (rp->mii_if.full_duplex)
iowrite8(ioread8(ioaddr + ChipCmd1) | Cmd1FDuplex,
......@@ -1101,24 +1244,26 @@ static void rhine_check_media(struct net_device *dev, unsigned int init_media)
else
iowrite8(ioread8(ioaddr + ChipCmd1) & ~Cmd1FDuplex,
ioaddr + ChipCmd1);
if (debug > 1)
netdev_info(dev, "force_media %d, carrier %d\n",
netif_info(rp, link, dev, "force_media %d, carrier %d\n",
rp->mii_if.force_media, netif_carrier_ok(dev));
}
/* Called after status of force_media possibly changed */
static void rhine_set_carrier(struct mii_if_info *mii)
{
struct net_device *dev = mii->dev;
struct rhine_private *rp = netdev_priv(dev);
if (mii->force_media) {
/* autoneg is off: Link is always assumed to be up */
if (!netif_carrier_ok(mii->dev))
netif_carrier_on(mii->dev);
}
else /* Let MMI library update carrier status */
rhine_check_media(mii->dev, 0);
if (debug > 1)
netdev_info(mii->dev, "force_media %d, carrier %d\n",
mii->force_media, netif_carrier_ok(mii->dev));
if (!netif_carrier_ok(dev))
netif_carrier_on(dev);
} else /* Let MMI library update carrier status */
rhine_check_media(dev, 0);
netif_info(rp, link, dev, "force_media %d, carrier %d\n",
mii->force_media, netif_carrier_ok(dev));
}
/**
......@@ -1266,10 +1411,10 @@ static int rhine_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
{
struct rhine_private *rp = netdev_priv(dev);
spin_lock_irq(&rp->lock);
spin_lock_bh(&rp->lock);
set_bit(vid, rp->active_vlans);
rhine_update_vcam(dev);
spin_unlock_irq(&rp->lock);
spin_unlock_bh(&rp->lock);
return 0;
}
......@@ -1277,10 +1422,10 @@ static int rhine_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
{
struct rhine_private *rp = netdev_priv(dev);
spin_lock_irq(&rp->lock);
spin_lock_bh(&rp->lock);
clear_bit(vid, rp->active_vlans);
rhine_update_vcam(dev);
spin_unlock_irq(&rp->lock);
spin_unlock_bh(&rp->lock);
return 0;
}
......@@ -1310,12 +1455,7 @@ static void init_registers(struct net_device *dev)
napi_enable(&rp->napi);
/* Enable interrupts by setting the interrupt mask. */
iowrite16(IntrRxDone | IntrRxErr | IntrRxEmpty| IntrRxOverflow |
IntrRxDropped | IntrRxNoBuf | IntrTxAborted |
IntrTxDone | IntrTxError | IntrTxUnderrun |
IntrPCIErr | IntrStatsMax | IntrLinkChange,
ioaddr + IntrEnable);
iowrite16(RHINE_EVENT & 0xffff, ioaddr + IntrEnable);
iowrite16(CmdStart | CmdTxOn | CmdRxOn | (Cmd1NoTxPoll << 8),
ioaddr + ChipCmd);
......@@ -1323,23 +1463,27 @@ static void init_registers(struct net_device *dev)
}
/* Enable MII link status auto-polling (required for IntrLinkChange) */
static void rhine_enable_linkmon(void __iomem *ioaddr)
static void rhine_enable_linkmon(struct rhine_private *rp)
{
void __iomem *ioaddr = rp->base;
iowrite8(0, ioaddr + MIICmd);
iowrite8(MII_BMSR, ioaddr + MIIRegAddr);
iowrite8(0x80, ioaddr + MIICmd);
RHINE_WAIT_FOR((ioread8(ioaddr + MIIRegAddr) & 0x20));
rhine_wait_bit_high(rp, MIIRegAddr, 0x20);
iowrite8(MII_BMSR | 0x40, ioaddr + MIIRegAddr);
}
/* Disable MII link status auto-polling (required for MDIO access) */
static void rhine_disable_linkmon(void __iomem *ioaddr, u32 quirks)
static void rhine_disable_linkmon(struct rhine_private *rp)
{
void __iomem *ioaddr = rp->base;
iowrite8(0, ioaddr + MIICmd);
if (quirks & rqRhineI) {
if (rp->quirks & rqRhineI) {
iowrite8(0x01, ioaddr + MIIRegAddr); // MII_BMSR
/* Can be called from ISR. Evil. */
......@@ -1348,13 +1492,13 @@ static void rhine_disable_linkmon(void __iomem *ioaddr, u32 quirks)
/* 0x80 must be set immediately before turning it off */
iowrite8(0x80, ioaddr + MIICmd);
RHINE_WAIT_FOR(ioread8(ioaddr + MIIRegAddr) & 0x20);
rhine_wait_bit_high(rp, MIIRegAddr, 0x20);
/* Heh. Now clear 0x80 again. */
iowrite8(0, ioaddr + MIICmd);
}
else
RHINE_WAIT_FOR(ioread8(ioaddr + MIIRegAddr) & 0x80);
rhine_wait_bit_high(rp, MIIRegAddr, 0x80);
}
/* Read and write over the MII Management Data I/O (MDIO) interface. */
......@@ -1365,16 +1509,16 @@ static int mdio_read(struct net_device *dev, int phy_id, int regnum)
void __iomem *ioaddr = rp->base;
int result;
rhine_disable_linkmon(ioaddr, rp->quirks);
rhine_disable_linkmon(rp);
/* rhine_disable_linkmon already cleared MIICmd */
iowrite8(phy_id, ioaddr + MIIPhyAddr);
iowrite8(regnum, ioaddr + MIIRegAddr);
iowrite8(0x40, ioaddr + MIICmd); /* Trigger read */
RHINE_WAIT_FOR(!(ioread8(ioaddr + MIICmd) & 0x40));
rhine_wait_bit_low(rp, MIICmd, 0x40);
result = ioread16(ioaddr + MIIData);
rhine_enable_linkmon(ioaddr);
rhine_enable_linkmon(rp);
return result;
}
......@@ -1383,16 +1527,33 @@ static void mdio_write(struct net_device *dev, int phy_id, int regnum, int value
struct rhine_private *rp = netdev_priv(dev);
void __iomem *ioaddr = rp->base;
rhine_disable_linkmon(ioaddr, rp->quirks);
rhine_disable_linkmon(rp);
/* rhine_disable_linkmon already cleared MIICmd */
iowrite8(phy_id, ioaddr + MIIPhyAddr);
iowrite8(regnum, ioaddr + MIIRegAddr);
iowrite16(value, ioaddr + MIIData);
iowrite8(0x20, ioaddr + MIICmd); /* Trigger write */
RHINE_WAIT_FOR(!(ioread8(ioaddr + MIICmd) & 0x20));
rhine_wait_bit_low(rp, MIICmd, 0x20);
rhine_enable_linkmon(rp);
}
rhine_enable_linkmon(ioaddr);
static void rhine_task_disable(struct rhine_private *rp)
{
mutex_lock(&rp->task_lock);
rp->task_enable = false;
mutex_unlock(&rp->task_lock);
cancel_work_sync(&rp->slow_event_task);
cancel_work_sync(&rp->reset_task);
}
static void rhine_task_enable(struct rhine_private *rp)
{
mutex_lock(&rp->task_lock);
rp->task_enable = true;
mutex_unlock(&rp->task_lock);
}
static int rhine_open(struct net_device *dev)
......@@ -1406,8 +1567,7 @@ static int rhine_open(struct net_device *dev)
if (rc)
return rc;
if (debug > 1)
netdev_dbg(dev, "%s() irq %d\n", __func__, rp->pdev->irq);
netif_dbg(rp, ifup, dev, "%s() irq %d\n", __func__, rp->pdev->irq);
rc = alloc_ring(dev);
if (rc) {
......@@ -1417,9 +1577,10 @@ static int rhine_open(struct net_device *dev)
alloc_rbufs(dev);
alloc_tbufs(dev);
rhine_chip_reset(dev);
rhine_task_enable(rp);
init_registers(dev);
if (debug > 2)
netdev_dbg(dev, "%s() Done - status %04x MII status: %04x\n",
netif_dbg(rp, ifup, dev, "%s() Done - status %04x MII status: %04x\n",
__func__, ioread16(ioaddr + ChipCmd),
mdio_read(dev, rp->mii_if.phy_id, MII_BMSR));
......@@ -1434,11 +1595,12 @@ static void rhine_reset_task(struct work_struct *work)
reset_task);
struct net_device *dev = rp->dev;
/* protect against concurrent rx interrupts */
disable_irq(rp->pdev->irq);
mutex_lock(&rp->task_lock);
napi_disable(&rp->napi);
if (!rp->task_enable)
goto out_unlock;
napi_disable(&rp->napi);
spin_lock_bh(&rp->lock);
/* clear all descriptors */
......@@ -1452,11 +1614,13 @@ static void rhine_reset_task(struct work_struct *work)
init_registers(dev);
spin_unlock_bh(&rp->lock);
enable_irq(rp->pdev->irq);
dev->trans_start = jiffies; /* prevent tx timeout */
dev->stats.tx_errors++;
netif_wake_queue(dev);
out_unlock:
mutex_unlock(&rp->task_lock);
}
static void rhine_tx_timeout(struct net_device *dev)
......@@ -1477,7 +1641,6 @@ static netdev_tx_t rhine_start_tx(struct sk_buff *skb,
struct rhine_private *rp = netdev_priv(dev);
void __iomem *ioaddr = rp->base;
unsigned entry;
unsigned long flags;
/* Caution: the write order is important here, set the field
with the "ownership" bits last. */
......@@ -1529,7 +1692,6 @@ static netdev_tx_t rhine_start_tx(struct sk_buff *skb,
rp->tx_ring[entry].tx_status = 0;
/* lock eth irq */
spin_lock_irqsave(&rp->lock, flags);
wmb();
rp->tx_ring[entry].tx_status |= cpu_to_le32(DescOwn);
wmb();
......@@ -1550,78 +1712,43 @@ static netdev_tx_t rhine_start_tx(struct sk_buff *skb,
if (rp->cur_tx == rp->dirty_tx + TX_QUEUE_LEN)
netif_stop_queue(dev);
spin_unlock_irqrestore(&rp->lock, flags);
netif_dbg(rp, tx_queued, dev, "Transmit frame #%d queued in slot %d\n",
rp->cur_tx - 1, entry);
if (debug > 4) {
netdev_dbg(dev, "Transmit frame #%d queued in slot %d\n",
rp->cur_tx-1, entry);
}
return NETDEV_TX_OK;
}
static void rhine_irq_disable(struct rhine_private *rp)
{
iowrite16(0x0000, rp->base + IntrEnable);
mmiowb();
}
/* The interrupt handler does all of the Rx thread work and cleans up
after the Tx thread. */
static irqreturn_t rhine_interrupt(int irq, void *dev_instance)
{
struct net_device *dev = dev_instance;
struct rhine_private *rp = netdev_priv(dev);
void __iomem *ioaddr = rp->base;
u32 intr_status;
int boguscnt = max_interrupt_work;
u32 status;
int handled = 0;
while ((intr_status = get_intr_status(dev))) {
handled = 1;
status = rhine_get_events(rp);
/* Acknowledge all of the current interrupt sources ASAP. */
if (intr_status & IntrTxDescRace)
iowrite8(0x08, ioaddr + IntrStatus2);
iowrite16(intr_status & 0xffff, ioaddr + IntrStatus);
IOSYNC;
if (debug > 4)
netdev_dbg(dev, "Interrupt, status %08x\n",
intr_status);
netif_dbg(rp, intr, dev, "Interrupt, status %08x\n", status);
if (intr_status & (IntrRxDone | IntrRxErr | IntrRxDropped |
IntrRxWakeUp | IntrRxEmpty | IntrRxNoBuf)) {
iowrite16(IntrTxAborted |
IntrTxDone | IntrTxError | IntrTxUnderrun |
IntrPCIErr | IntrStatsMax | IntrLinkChange,
ioaddr + IntrEnable);
if (status & RHINE_EVENT) {
handled = 1;
rhine_irq_disable(rp);
napi_schedule(&rp->napi);
}
if (intr_status & (IntrTxErrSummary | IntrTxDone)) {
if (intr_status & IntrTxErrSummary) {
/* Avoid scavenging before Tx engine turned off */
RHINE_WAIT_FOR(!(ioread8(ioaddr+ChipCmd) & CmdTxOn));
if (debug > 2 &&
ioread8(ioaddr+ChipCmd) & CmdTxOn)
netdev_warn(dev,
"%s: Tx engine still on\n",
__func__);
if (status & ~(IntrLinkChange | IntrStatsMax | RHINE_EVENT_NAPI)) {
netif_err(rp, intr, dev, "Something Wicked happened! %08x\n",
status);
}
rhine_tx(dev);
}
/* Abnormal error summary/uncommon events handlers. */
if (intr_status & (IntrPCIErr | IntrLinkChange |
IntrStatsMax | IntrTxError | IntrTxAborted |
IntrTxUnderrun | IntrTxDescRace))
rhine_error(dev, intr_status);
if (--boguscnt < 0) {
netdev_warn(dev, "Too much work at interrupt, status=%#08x\n",
intr_status);
break;
}
}
if (debug > 3)
netdev_dbg(dev, "exiting interrupt, status=%08x\n",
ioread16(ioaddr + IntrStatus));
return IRQ_RETVAL(handled);
}
......@@ -1632,20 +1759,16 @@ static void rhine_tx(struct net_device *dev)
struct rhine_private *rp = netdev_priv(dev);
int txstatus = 0, entry = rp->dirty_tx % TX_RING_SIZE;
spin_lock(&rp->lock);
/* find and cleanup dirty tx descriptors */
while (rp->dirty_tx != rp->cur_tx) {
txstatus = le32_to_cpu(rp->tx_ring[entry].tx_status);
if (debug > 6)
netdev_dbg(dev, "Tx scavenge %d status %08x\n",
netif_dbg(rp, tx_done, dev, "Tx scavenge %d status %08x\n",
entry, txstatus);
if (txstatus & DescOwn)
break;
if (txstatus & 0x8000) {
if (debug > 1)
netdev_dbg(dev, "Transmit error, Tx status %08x\n",
txstatus);
netif_dbg(rp, tx_done, dev,
"Transmit error, Tx status %08x\n", txstatus);
dev->stats.tx_errors++;
if (txstatus & 0x0400)
dev->stats.tx_carrier_errors++;
......@@ -1667,10 +1790,8 @@ static void rhine_tx(struct net_device *dev)
dev->stats.collisions += (txstatus >> 3) & 0x0F;
else
dev->stats.collisions += txstatus & 0x0F;
if (debug > 6)
netdev_dbg(dev, "collisions: %1.1x:%1.1x\n",
(txstatus >> 3) & 0xF,
txstatus & 0xF);
netif_dbg(rp, tx_done, dev, "collisions: %1.1x:%1.1x\n",
(txstatus >> 3) & 0xF, txstatus & 0xF);
dev->stats.tx_bytes += rp->tx_skbuff[entry]->len;
dev->stats.tx_packets++;
}
......@@ -1687,8 +1808,6 @@ static void rhine_tx(struct net_device *dev)
}
if ((rp->cur_tx - rp->dirty_tx) < TX_QUEUE_LEN - 4)
netif_wake_queue(dev);
spin_unlock(&rp->lock);
}
/**
......@@ -1713,11 +1832,8 @@ static int rhine_rx(struct net_device *dev, int limit)
int count;
int entry = rp->cur_rx % RX_RING_SIZE;
if (debug > 4) {
netdev_dbg(dev, "%s(), entry %d status %08x\n",
__func__, entry,
le32_to_cpu(rp->rx_head_desc->rx_status));
}
netif_dbg(rp, rx_status, dev, "%s(), entry %d status %08x\n", __func__,
entry, le32_to_cpu(rp->rx_head_desc->rx_status));
/* If EOP is set on the next entry, it's a new packet. Send it up. */
for (count = 0; count < limit; ++count) {
......@@ -1729,9 +1845,8 @@ static int rhine_rx(struct net_device *dev, int limit)
if (desc_status & DescOwn)
break;
if (debug > 4)
netdev_dbg(dev, "%s() status is %08x\n",
__func__, desc_status);
netif_dbg(rp, rx_status, dev, "%s() status %08x\n", __func__,
desc_status);
if ((desc_status & (RxWholePkt | RxErr)) != RxWholePkt) {
if ((desc_status & RxWholePkt) != RxWholePkt) {
......@@ -1747,9 +1862,9 @@ static int rhine_rx(struct net_device *dev, int limit)
dev->stats.rx_length_errors++;
} else if (desc_status & RxErr) {
/* There was a error. */
if (debug > 2)
netdev_dbg(dev, "%s() Rx error was %08x\n",
__func__, desc_status);
netif_dbg(rp, rx_err, dev,
"%s() Rx error %08x\n", __func__,
desc_status);
dev->stats.rx_errors++;
if (desc_status & 0x0030)
dev->stats.rx_length_errors++;
......@@ -1839,19 +1954,6 @@ static int rhine_rx(struct net_device *dev, int limit)
return count;
}
/*
* Clears the "tally counters" for CRC errors and missed frames(?).
* It has been reported that some chips need a write of 0 to clear
* these, for others the counters are set to 1 when written to and
* instead cleared when read. So we clear them both ways ...
*/
static inline void clear_tally_counters(void __iomem *ioaddr)
{
iowrite32(0, ioaddr + RxMissed);
ioread16(ioaddr + RxCRCErrs);
ioread16(ioaddr + RxMissed);
}
static void rhine_restart_tx(struct net_device *dev) {
struct rhine_private *rp = netdev_priv(dev);
void __iomem *ioaddr = rp->base;
......@@ -1862,7 +1964,7 @@ static void rhine_restart_tx(struct net_device *dev) {
* If new errors occurred, we need to sort them out before doing Tx.
* In that case the ISR will be back here RSN anyway.
*/
intr_status = get_intr_status(dev);
intr_status = rhine_get_events(rp);
if ((intr_status & IntrTxErrSummary) == 0) {
......@@ -1883,79 +1985,50 @@ static void rhine_restart_tx(struct net_device *dev) {
}
else {
/* This should never happen */
if (debug > 1)
netdev_warn(dev, "%s() Another error occurred %08x\n",
__func__, intr_status);
netif_warn(rp, tx_err, dev, "another error occurred %08x\n",
intr_status);
}
}
static void rhine_error(struct net_device *dev, int intr_status)
static void rhine_slow_event_task(struct work_struct *work)
{
struct rhine_private *rp = netdev_priv(dev);
void __iomem *ioaddr = rp->base;
struct rhine_private *rp =
container_of(work, struct rhine_private, slow_event_task);
struct net_device *dev = rp->dev;
u32 intr_status;
spin_lock(&rp->lock);
mutex_lock(&rp->task_lock);
if (!rp->task_enable)
goto out_unlock;
intr_status = rhine_get_events(rp);
rhine_ack_events(rp, intr_status & RHINE_EVENT_SLOW);
if (intr_status & IntrLinkChange)
rhine_check_media(dev, 0);
if (intr_status & IntrStatsMax) {
dev->stats.rx_crc_errors += ioread16(ioaddr + RxCRCErrs);
dev->stats.rx_missed_errors += ioread16(ioaddr + RxMissed);
clear_tally_counters(ioaddr);
}
if (intr_status & IntrTxAborted) {
if (debug > 1)
netdev_info(dev, "Abort %08x, frame dropped\n",
intr_status);
}
if (intr_status & IntrTxUnderrun) {
if (rp->tx_thresh < 0xE0)
BYTE_REG_BITS_SET((rp->tx_thresh += 0x20), 0x80, ioaddr + TxConfig);
if (debug > 1)
netdev_info(dev, "Transmitter underrun, Tx threshold now %02x\n",
rp->tx_thresh);
}
if (intr_status & IntrTxDescRace) {
if (debug > 2)
netdev_info(dev, "Tx descriptor write-back race\n");
}
if ((intr_status & IntrTxError) &&
(intr_status & (IntrTxAborted |
IntrTxUnderrun | IntrTxDescRace)) == 0) {
if (rp->tx_thresh < 0xE0) {
BYTE_REG_BITS_SET((rp->tx_thresh += 0x20), 0x80, ioaddr + TxConfig);
}
if (debug > 1)
netdev_info(dev, "Unspecified error. Tx threshold now %02x\n",
rp->tx_thresh);
}
if (intr_status & (IntrTxAborted | IntrTxUnderrun | IntrTxDescRace |
IntrTxError))
rhine_restart_tx(dev);
if (intr_status & ~(IntrLinkChange | IntrStatsMax | IntrTxUnderrun |
IntrTxError | IntrTxAborted | IntrNormalSummary |
IntrTxDescRace)) {
if (debug > 1)
netdev_err(dev, "Something Wicked happened! %08x\n",
intr_status);
}
if (intr_status & IntrPCIErr)
netif_warn(rp, hw, dev, "PCI error\n");
spin_unlock(&rp->lock);
napi_disable(&rp->napi);
rhine_irq_disable(rp);
/* Slow and safe. Consider __napi_schedule as a replacement ? */
napi_enable(&rp->napi);
napi_schedule(&rp->napi);
out_unlock:
mutex_unlock(&rp->task_lock);
}
static struct net_device_stats *rhine_get_stats(struct net_device *dev)
{
struct rhine_private *rp = netdev_priv(dev);
void __iomem *ioaddr = rp->base;
unsigned long flags;
spin_lock_irqsave(&rp->lock, flags);
dev->stats.rx_crc_errors += ioread16(ioaddr + RxCRCErrs);
dev->stats.rx_missed_errors += ioread16(ioaddr + RxMissed);
clear_tally_counters(ioaddr);
spin_unlock_irqrestore(&rp->lock, flags);
spin_lock_bh(&rp->lock);
rhine_update_rx_crc_and_missed_errord(rp);
spin_unlock_bh(&rp->lock);
return &dev->stats;
}
......@@ -2022,9 +2095,9 @@ static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
struct rhine_private *rp = netdev_priv(dev);
int rc;
spin_lock_irq(&rp->lock);
mutex_lock(&rp->task_lock);
rc = mii_ethtool_gset(&rp->mii_if, cmd);
spin_unlock_irq(&rp->lock);
mutex_unlock(&rp->task_lock);
return rc;
}
......@@ -2034,10 +2107,10 @@ static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
struct rhine_private *rp = netdev_priv(dev);
int rc;
spin_lock_irq(&rp->lock);
mutex_lock(&rp->task_lock);
rc = mii_ethtool_sset(&rp->mii_if, cmd);
spin_unlock_irq(&rp->lock);
rhine_set_carrier(&rp->mii_if);
mutex_unlock(&rp->task_lock);
return rc;
}
......@@ -2058,12 +2131,16 @@ static u32 netdev_get_link(struct net_device *dev)
static u32 netdev_get_msglevel(struct net_device *dev)
{
return debug;
struct rhine_private *rp = netdev_priv(dev);
return rp->msg_enable;
}
static void netdev_set_msglevel(struct net_device *dev, u32 value)
{
debug = value;
struct rhine_private *rp = netdev_priv(dev);
rp->msg_enable = value;
}
static void rhine_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
......@@ -2119,10 +2196,10 @@ static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
if (!netif_running(dev))
return -EINVAL;
spin_lock_irq(&rp->lock);
mutex_lock(&rp->task_lock);
rc = generic_mii_ioctl(&rp->mii_if, if_mii(rq), cmd, NULL);
spin_unlock_irq(&rp->lock);
rhine_set_carrier(&rp->mii_if);
mutex_unlock(&rp->task_lock);
return rc;
}
......@@ -2132,27 +2209,21 @@ static int rhine_close(struct net_device *dev)
struct rhine_private *rp = netdev_priv(dev);
void __iomem *ioaddr = rp->base;
rhine_task_disable(rp);
napi_disable(&rp->napi);
cancel_work_sync(&rp->reset_task);
netif_stop_queue(dev);
spin_lock_irq(&rp->lock);
if (debug > 1)
netdev_dbg(dev, "Shutting down ethercard, status was %04x\n",
netif_dbg(rp, ifdown, dev, "Shutting down ethercard, status was %04x\n",
ioread16(ioaddr + ChipCmd));
/* Switch to loopback mode to avoid hardware races. */
iowrite8(rp->tx_thresh | 0x02, ioaddr + TxConfig);
/* Disable interrupts by clearing the interrupt mask. */
iowrite16(0x0000, ioaddr + IntrEnable);
rhine_irq_disable(rp);
/* Stop the chip's Tx and Rx processes. */
iowrite16(CmdStop, ioaddr + ChipCmd);
spin_unlock_irq(&rp->lock);
free_irq(rp->pdev->irq, dev);
free_rbufs(dev);
free_tbufs(dev);
......@@ -2192,6 +2263,8 @@ static void rhine_shutdown (struct pci_dev *pdev)
if (rp->quirks & rq6patterns)
iowrite8(0x04, ioaddr + WOLcgClr);
spin_lock(&rp->lock);
if (rp->wolopts & WAKE_MAGIC) {
iowrite8(WOLmagic, ioaddr + WOLcrSet);
/*
......@@ -2216,58 +2289,46 @@ static void rhine_shutdown (struct pci_dev *pdev)
iowrite8(ioread8(ioaddr + StickyHW) | 0x04, ioaddr + StickyHW);
}
/* Hit power state D3 (sleep) */
if (!avoid_D3)
iowrite8(ioread8(ioaddr + StickyHW) | 0x03, ioaddr + StickyHW);
spin_unlock(&rp->lock);
/* TODO: Check use of pci_enable_wake() */
if (system_state == SYSTEM_POWER_OFF && !avoid_D3) {
iowrite8(ioread8(ioaddr + StickyHW) | 0x03, ioaddr + StickyHW);
pci_wake_from_d3(pdev, true);
pci_set_power_state(pdev, PCI_D3hot);
}
}
#ifdef CONFIG_PM
static int rhine_suspend(struct pci_dev *pdev, pm_message_t state)
#ifdef CONFIG_PM_SLEEP
static int rhine_suspend(struct device *device)
{
struct pci_dev *pdev = to_pci_dev(device);
struct net_device *dev = pci_get_drvdata(pdev);
struct rhine_private *rp = netdev_priv(dev);
unsigned long flags;
if (!netif_running(dev))
return 0;
rhine_task_disable(rp);
rhine_irq_disable(rp);
napi_disable(&rp->napi);
netif_device_detach(dev);
pci_save_state(pdev);
spin_lock_irqsave(&rp->lock, flags);
rhine_shutdown(pdev);
spin_unlock_irqrestore(&rp->lock, flags);
free_irq(dev->irq, dev);
return 0;
}
static int rhine_resume(struct pci_dev *pdev)
static int rhine_resume(struct device *device)
{
struct pci_dev *pdev = to_pci_dev(device);
struct net_device *dev = pci_get_drvdata(pdev);
struct rhine_private *rp = netdev_priv(dev);
unsigned long flags;
int ret;
if (!netif_running(dev))
return 0;
if (request_irq(dev->irq, rhine_interrupt, IRQF_SHARED, dev->name, dev))
netdev_err(dev, "request_irq failed\n");
ret = pci_set_power_state(pdev, PCI_D0);
if (debug > 1)
netdev_info(dev, "Entering power state D0 %s (%d)\n",
ret ? "failed" : "succeeded", ret);
pci_restore_state(pdev);
spin_lock_irqsave(&rp->lock, flags);
#ifdef USE_MMIO
enable_mmio(rp->pioaddr, rp->quirks);
#endif
......@@ -2276,25 +2337,32 @@ static int rhine_resume(struct pci_dev *pdev)
free_rbufs(dev);
alloc_tbufs(dev);
alloc_rbufs(dev);
rhine_task_enable(rp);
spin_lock_bh(&rp->lock);
init_registers(dev);
spin_unlock_irqrestore(&rp->lock, flags);
spin_unlock_bh(&rp->lock);
netif_device_attach(dev);
return 0;
}
#endif /* CONFIG_PM */
static SIMPLE_DEV_PM_OPS(rhine_pm_ops, rhine_suspend, rhine_resume);
#define RHINE_PM_OPS (&rhine_pm_ops)
#else
#define RHINE_PM_OPS NULL
#endif /* !CONFIG_PM_SLEEP */
static struct pci_driver rhine_driver = {
.name = DRV_NAME,
.id_table = rhine_pci_tbl,
.probe = rhine_init_one,
.remove = __devexit_p(rhine_remove_one),
#ifdef CONFIG_PM
.suspend = rhine_suspend,
.resume = rhine_resume,
#endif /* CONFIG_PM */
.shutdown = rhine_shutdown,
.driver.pm = RHINE_PM_OPS,
};
static struct dmi_system_id __initdata rhine_dmi_table[] = {
......
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